net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2019 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <net/net_namespace.h>
  24 #include <net/genetlink.h>
  25 #include <net/cfg80211.h>
  26 #include <net/sock.h>
  27 #include <net/inet_connection_sock.h>
  28 #include "core.h"
  29 #include "nl80211.h"
  30 #include "reg.h"
  31 #include "rdev-ops.h"
  32
  33 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  34                                    struct genl_info *info,
  35                                    struct cfg80211_crypto_settings *settings,
  36                                    int cipher_limit);
  37
  38 /* the netlink family */
  39 static struct genl_family nl80211_fam;
  40
  41 /* multicast groups */
  42 enum nl80211_multicast_groups {
  43         NL80211_MCGRP_CONFIG,
  44         NL80211_MCGRP_SCAN,
  45         NL80211_MCGRP_REGULATORY,
  46         NL80211_MCGRP_MLME,
  47         NL80211_MCGRP_VENDOR,
  48         NL80211_MCGRP_NAN,
  49         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  50 };
  51
  52 static const struct genl_multicast_group nl80211_mcgrps[] = {
  53         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  54         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  55         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  56         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  57         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  58         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  59 #ifdef CONFIG_NL80211_TESTMODE
  60         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  61 #endif
  62 };
  63
  64 /* returns ERR_PTR values */
  65 static struct wireless_dev *
  66 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  67 {
  68         struct cfg80211_registered_device *rdev;
  69         struct wireless_dev *result = NULL;
  70         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  71         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  72         u64 wdev_id;
  73         int wiphy_idx = -1;
  74         int ifidx = -1;
  75
  76         ASSERT_RTNL();
  77
  78         if (!have_ifidx && !have_wdev_id)
  79                 return ERR_PTR(-EINVAL);
  80
  81         if (have_ifidx)
  82                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  83         if (have_wdev_id) {
  84                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  85                 wiphy_idx = wdev_id >> 32;
  86         }
  87
  88         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  89                 struct wireless_dev *wdev;
  90
  91                 if (wiphy_net(&rdev->wiphy) != netns)
  92                         continue;
  93
  94                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  95                         continue;
  96
  97                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  98                         if (have_ifidx && wdev->netdev &&
  99                             wdev->netdev->ifindex == ifidx) {
 100                                 result = wdev;
 101                                 break;
 102                         }
 103                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 104                                 result = wdev;
 105                                 break;
 106                         }
 107                 }
 108
 109                 if (result)
 110                         break;
 111         }
 112
 113         if (result)
 114                 return result;
 115         return ERR_PTR(-ENODEV);
 116 }
 117
 118 static struct cfg80211_registered_device *
 119 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 120 {
 121         struct cfg80211_registered_device *rdev = NULL, *tmp;
 122         struct net_device *netdev;
 123
 124         ASSERT_RTNL();
 125
 126         if (!attrs[NL80211_ATTR_WIPHY] &&
 127             !attrs[NL80211_ATTR_IFINDEX] &&
 128             !attrs[NL80211_ATTR_WDEV])
 129                 return ERR_PTR(-EINVAL);
 130
 131         if (attrs[NL80211_ATTR_WIPHY])
 132                 rdev = cfg80211_rdev_by_wiphy_idx(
 133                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 134
 135         if (attrs[NL80211_ATTR_WDEV]) {
 136                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 137                 struct wireless_dev *wdev;
 138                 bool found = false;
 139
 140                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 141                 if (tmp) {
 142                         /* make sure wdev exists */
 143                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 144                                 if (wdev->identifier != (u32)wdev_id)
 145                                         continue;
 146                                 found = true;
 147                                 break;
 148                         }
 149
 150                         if (!found)
 151                                 tmp = NULL;
 152
 153                         if (rdev && tmp != rdev)
 154                                 return ERR_PTR(-EINVAL);
 155                         rdev = tmp;
 156                 }
 157         }
 158
 159         if (attrs[NL80211_ATTR_IFINDEX]) {
 160                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 161
 162                 netdev = __dev_get_by_index(netns, ifindex);
 163                 if (netdev) {
 164                         if (netdev->ieee80211_ptr)
 165                                 tmp = wiphy_to_rdev(
 166                                         netdev->ieee80211_ptr->wiphy);
 167                         else
 168                                 tmp = NULL;
 169
 170                         /* not wireless device -- return error */
 171                         if (!tmp)
 172                                 return ERR_PTR(-EINVAL);
 173
 174                         /* mismatch -- return error */
 175                         if (rdev && tmp != rdev)
 176                                 return ERR_PTR(-EINVAL);
 177
 178                         rdev = tmp;
 179                 }
 180         }
 181
 182         if (!rdev)
 183                 return ERR_PTR(-ENODEV);
 184
 185         if (netns != wiphy_net(&rdev->wiphy))
 186                 return ERR_PTR(-ENODEV);
 187
 188         return rdev;
 189 }
 190
 191 /*
 192  * This function returns a pointer to the driver
 193  * that the genl_info item that is passed refers to.
 194  *
 195  * The result of this can be a PTR_ERR and hence must
 196  * be checked with IS_ERR() for errors.
 197  */
 198 static struct cfg80211_registered_device *
 199 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 200 {
 201         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 202 }
 203
 204 static int validate_ie_attr(const struct nlattr *attr,
 205                             struct netlink_ext_ack *extack)
 206 {
 207         const u8 *data = nla_data(attr);
 208         unsigned int len = nla_len(attr);
 209         const struct element *elem;
 210
 211         for_each_element(elem, data, len) {
 212                 /* nothing */
 213         }
 214
 215         if (for_each_element_completed(elem, data, len))
 216                 return 0;
 217
 218         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 219         return -EINVAL;
 220 }
 221
 222 /* policy for the attributes */
 223 static const struct nla_policy
 224 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 225         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 226         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 227                                         .len = U8_MAX },
 228         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 229                                              .len = U8_MAX },
 230 };
 231
 232 static const struct nla_policy
 233 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 234         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 235         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 236         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 237                 NLA_POLICY_MAX(NLA_U8, 15),
 238         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 239         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 240                 NLA_POLICY_MAX(NLA_U8, 15),
 241         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 242                 NLA_POLICY_MAX(NLA_U8, 31),
 243         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 244         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 245         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 246 };
 247
 248 static const struct nla_policy
 249 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 250         [NL80211_PMSR_TYPE_FTM] =
 251                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 252 };
 253
 254 static const struct nla_policy
 255 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 256         [NL80211_PMSR_REQ_ATTR_DATA] =
 257                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 258         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 259 };
 260
 261 static const struct nla_policy
 262 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 263         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 264         /*
 265          * we could specify this again to be the top-level policy,
 266          * but that would open us up to recursion problems ...
 267          */
 268         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 269         [NL80211_PMSR_PEER_ATTR_REQ] =
 270                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 271         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 272 };
 273
 274 static const struct nla_policy
 275 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 276         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 277         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 278         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 279         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 280         [NL80211_PMSR_ATTR_PEERS] =
 281                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 282 };
 283
 284 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 285         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 286         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 287                                       .len = 20-1 },
 288         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 289
 290         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 291         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 292         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 293         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 294         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 295
 296         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 297         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 298         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 299         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 300         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 301         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 302
 303         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 304         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 305         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 306
 307         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 308         [NL80211_ATTR_PREV_BSSID] = {
 309                 .type = NLA_EXACT_LEN_WARN,
 310                 .len = ETH_ALEN
 311         },
 312
 313         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 314         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 315                                     .len = WLAN_MAX_KEY_LEN },
 316         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
 317         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 318         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 319         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 320         [NL80211_ATTR_KEY_TYPE] =
 321                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 322
 323         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 324         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 325         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 326                                        .len = IEEE80211_MAX_DATA_LEN },
 327         [NL80211_ATTR_BEACON_TAIL] =
 328                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 329                                        IEEE80211_MAX_DATA_LEN),
 330         [NL80211_ATTR_STA_AID] =
 331                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 332         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 333         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 334         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 335                                                .len = NL80211_MAX_SUPP_RATES },
 336         [NL80211_ATTR_STA_PLINK_ACTION] =
 337                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 338         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 339                 NLA_POLICY_RANGE(NLA_U8,
 340                                  NL80211_TX_POWER_AUTOMATIC,
 341                                  NL80211_TX_POWER_FIXED),
 342         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 343         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 344         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 345         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 346                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 347         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 348
 349         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 350         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 351
 352         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 353         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 354         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 355         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 356                                            .len = NL80211_MAX_SUPP_RATES },
 357         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 358
 359         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 360         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 361
 362         [NL80211_ATTR_HT_CAPABILITY] = {
 363                 .type = NLA_EXACT_LEN_WARN,
 364                 .len = NL80211_HT_CAPABILITY_LEN
 365         },
 366
 367         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 368         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 369                                                    validate_ie_attr,
 370                                                    IEEE80211_MAX_DATA_LEN),
 371         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 372         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 373
 374         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 375                                 .len = IEEE80211_MAX_SSID_LEN },
 376         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 377         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 378         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 379         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 380         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 381                                                   NL80211_MFP_NO,
 382                                                   NL80211_MFP_OPTIONAL),
 383         [NL80211_ATTR_STA_FLAGS2] = {
 384                 .len = sizeof(struct nl80211_sta_flag_update),
 385         },
 386         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 387         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 388         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 389         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 390         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 391         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 392         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 393         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 394         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 395         [NL80211_ATTR_PMKID] = {
 396                 .type = NLA_EXACT_LEN_WARN,
 397                 .len = WLAN_PMKID_LEN
 398         },
 399         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 400         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 401         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 402         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 403                                  .len = IEEE80211_MAX_DATA_LEN },
 404         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 405         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 406                                                    NL80211_PS_DISABLED,
 407                                                    NL80211_PS_ENABLED),
 408         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 409         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 410         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 411         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 412         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 413         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 414         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 415         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 416         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 417         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 418         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 419         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 420         [NL80211_ATTR_STA_PLINK_STATE] =
 421                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 422         [NL80211_ATTR_MESH_PEER_AID] =
 423                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 424         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 425         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 426         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 427         [NL80211_ATTR_HIDDEN_SSID] =
 428                 NLA_POLICY_RANGE(NLA_U32,
 429                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 430                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 431         [NL80211_ATTR_IE_PROBE_RESP] =
 432                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 433                                        IEEE80211_MAX_DATA_LEN),
 434         [NL80211_ATTR_IE_ASSOC_RESP] =
 435                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 436                                        IEEE80211_MAX_DATA_LEN),
 437         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 438         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 439         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 440         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 441         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 442         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 443         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 444         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 445         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 446         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 447         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 448                                       .len = IEEE80211_MAX_DATA_LEN },
 449         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 450         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 451         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 452                 .len = NL80211_HT_CAPABILITY_LEN
 453         },
 454         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 455         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 456         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 457         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 458         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 459         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 460         [NL80211_ATTR_VHT_CAPABILITY] = {
 461                 .type = NLA_EXACT_LEN_WARN,
 462                 .len = NL80211_VHT_CAPABILITY_LEN
 463         },
 464         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 465         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 466         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 467         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 468                 NLA_POLICY_RANGE(NLA_U32,
 469                                  NL80211_MESH_POWER_UNKNOWN + 1,
 470                                  NL80211_MESH_POWER_MAX),
 471         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 472         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 473         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 474         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 475         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 476         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 477         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 478                 .len = NL80211_VHT_CAPABILITY_LEN,
 479         },
 480         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 481         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 482                                   .len = IEEE80211_MAX_DATA_LEN },
 483         [NL80211_ATTR_PEER_AID] =
 484                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 485         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 486         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 487         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 488         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 489         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 490         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 491         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 492         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 493         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 494         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 495         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 496         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 497         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 498                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 499         [NL80211_ATTR_MAC_HINT] = {
 500                 .type = NLA_EXACT_LEN_WARN,
 501                 .len = ETH_ALEN
 502         },
 503         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 504         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 505         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 506         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 507         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 508         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 509         [NL80211_ATTR_USER_PRIO] =
 510                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 511         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 512         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 513         [NL80211_ATTR_MAC_MASK] = {
 514                 .type = NLA_EXACT_LEN_WARN,
 515                 .len = ETH_ALEN
 516         },
 517         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 518         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 519         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 520         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 521         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 522         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 523         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 524                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 525         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 526                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 527         },
 528         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 529                 .type = NLA_EXACT_LEN_WARN,
 530                 .len = ETH_ALEN
 531         },
 532         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 533         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 534         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 535         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 536                                     .len = FILS_MAX_KEK_LEN },
 537         [NL80211_ATTR_FILS_NONCES] = {
 538                 .type = NLA_EXACT_LEN_WARN,
 539                 .len = 2 * FILS_NONCE_LEN
 540         },
 541         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 542         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 543         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 544         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 545                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 546         },
 547         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 548         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 549                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 550         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 551                                           .len = FILS_ERP_MAX_REALM_LEN },
 552         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 553         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 554                                         .len = FILS_ERP_MAX_RRK_LEN },
 555         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 556         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 557         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 558         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 559
 560         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 561         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 562         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 563         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 564                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 565
 566         [NL80211_ATTR_FTM_RESPONDER] = {
 567                 .type = NLA_NESTED,
 568                 .validation_data = nl80211_ftm_responder_policy,
 569         },
 570         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 571         [NL80211_ATTR_PEER_MEASUREMENTS] =
 572                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 573         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 574         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 575                                         .len = SAE_PASSWORD_MAX_LEN },
 576         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 577 };
 578
 579 /* policy for the key attributes */
 580 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 581         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 582         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 583         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 584         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 585         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 586         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 587         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 588         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 589         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 590 };
 591
 592 /* policy for the key default flags */
 593 static const struct nla_policy
 594 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 595         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 596         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 597 };
 598
 599 #ifdef CONFIG_PM
 600 /* policy for WoWLAN attributes */
 601 static const struct nla_policy
 602 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 603         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 604         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 605         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 606         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 607         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 608         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 609         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 610         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 611         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 612         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 613 };
 614
 615 static const struct nla_policy
 616 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 617         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 618         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 619         [NL80211_WOWLAN_TCP_DST_MAC] = {
 620                 .type = NLA_EXACT_LEN_WARN,
 621                 .len = ETH_ALEN
 622         },
 623         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 624         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 625         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 626         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 627                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 628         },
 629         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 630                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 631         },
 632         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 633         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 634         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 635 };
 636 #endif /* CONFIG_PM */
 637
 638 /* policy for coalesce rule attributes */
 639 static const struct nla_policy
 640 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 641         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 642         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 643                 NLA_POLICY_RANGE(NLA_U32,
 644                                  NL80211_COALESCE_CONDITION_MATCH,
 645                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 646         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 647 };
 648
 649 /* policy for GTK rekey offload attributes */
 650 static const struct nla_policy
 651 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 652         [NL80211_REKEY_DATA_KEK] = {
 653                 .type = NLA_EXACT_LEN_WARN,
 654                 .len = NL80211_KEK_LEN,
 655         },
 656         [NL80211_REKEY_DATA_KCK] = {
 657                 .type = NLA_EXACT_LEN_WARN,
 658                 .len = NL80211_KCK_LEN,
 659         },
 660         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 661                 .type = NLA_EXACT_LEN_WARN,
 662                 .len = NL80211_REPLAY_CTR_LEN
 663         },
 664 };
 665
 666 static const struct nla_policy
 667 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 668         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 669         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 670         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 671 };
 672
 673 static const struct nla_policy
 674 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 675         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 676                                                  .len = IEEE80211_MAX_SSID_LEN },
 677         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 678                 .type = NLA_EXACT_LEN_WARN,
 679                 .len = ETH_ALEN
 680         },
 681         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 682         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 683                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 684 };
 685
 686 static const struct nla_policy
 687 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 688         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 689         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 690 };
 691
 692 static const struct nla_policy
 693 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 694         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 695         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 696         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 697                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 698         },
 699 };
 700
 701 /* policy for NAN function attributes */
 702 static const struct nla_policy
 703 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 704         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 705         [NL80211_NAN_FUNC_SERVICE_ID] = {
 706                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 707         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 708         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 709         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 710         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 711         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 712         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 713                 .type = NLA_EXACT_LEN_WARN,
 714                 .len = ETH_ALEN
 715         },
 716         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 717         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 718         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 719                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 720         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 721         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 722         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 723         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 724         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 725 };
 726
 727 /* policy for Service Response Filter attributes */
 728 static const struct nla_policy
 729 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 730         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 731         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 732                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 733         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 734         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 735 };
 736
 737 /* policy for packet pattern attributes */
 738 static const struct nla_policy
 739 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 740         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 741         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 742         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 743 };
 744
 745 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 746                               struct cfg80211_registered_device **rdev,
 747                               struct wireless_dev **wdev)
 748 {
 749         int err;
 750
 751         if (!cb->args[0]) {
 752                 err = nlmsg_parse_deprecated(cb->nlh,
 753                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 754                                              genl_family_attrbuf(&nl80211_fam),
 755                                              nl80211_fam.maxattr,
 756                                              nl80211_policy, NULL);
 757                 if (err)
 758                         return err;
 759
 760                 *wdev = __cfg80211_wdev_from_attrs(
 761                                         sock_net(cb->skb->sk),
 762                                         genl_family_attrbuf(&nl80211_fam));
 763                 if (IS_ERR(*wdev))
 764                         return PTR_ERR(*wdev);
 765                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 766                 /* 0 is the first index - add 1 to parse only once */
 767                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 768                 cb->args[1] = (*wdev)->identifier;
 769         } else {
 770                 /* subtract the 1 again here */
 771                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 772                 struct wireless_dev *tmp;
 773
 774                 if (!wiphy)
 775                         return -ENODEV;
 776                 *rdev = wiphy_to_rdev(wiphy);
 777                 *wdev = NULL;
 778
 779                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 780                         if (tmp->identifier == cb->args[1]) {
 781                                 *wdev = tmp;
 782                                 break;
 783                         }
 784                 }
 785
 786                 if (!*wdev)
 787                         return -ENODEV;
 788         }
 789
 790         return 0;
 791 }
 792
 793 /* message building helper */
 794 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 795                      int flags, u8 cmd)
 796 {
 797         /* since there is no private header just add the generic one */
 798         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 799 }
 800
 801 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 802                                      const struct ieee80211_reg_rule *rule)
 803 {
 804         int j;
 805         struct nlattr *nl_wmm_rules =
 806                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 807
 808         if (!nl_wmm_rules)
 809                 goto nla_put_failure;
 810
 811         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 812                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 813
 814                 if (!nl_wmm_rule)
 815                         goto nla_put_failure;
 816
 817                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 818                                 rule->wmm_rule.client[j].cw_min) ||
 819                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 820                                 rule->wmm_rule.client[j].cw_max) ||
 821                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 822                                rule->wmm_rule.client[j].aifsn) ||
 823                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 824                                 rule->wmm_rule.client[j].cot))
 825                         goto nla_put_failure;
 826
 827                 nla_nest_end(msg, nl_wmm_rule);
 828         }
 829         nla_nest_end(msg, nl_wmm_rules);
 830
 831         return 0;
 832
 833 nla_put_failure:
 834         return -ENOBUFS;
 835 }
 836
 837 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 838                                    struct ieee80211_channel *chan,
 839                                    bool large)
 840 {
 841         /* Some channels must be completely excluded from the
 842          * list to protect old user-space tools from breaking
 843          */
 844         if (!large && chan->flags &
 845             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 846                 return 0;
 847
 848         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 849                         chan->center_freq))
 850                 goto nla_put_failure;
 851
 852         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 853             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 854                 goto nla_put_failure;
 855         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 856                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 857                         goto nla_put_failure;
 858                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 859                         goto nla_put_failure;
 860         }
 861         if (chan->flags & IEEE80211_CHAN_RADAR) {
 862                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 863                         goto nla_put_failure;
 864                 if (large) {
 865                         u32 time;
 866
 867                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 868
 869                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 870                                         chan->dfs_state))
 871                                 goto nla_put_failure;
 872                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 873                                         time))
 874                                 goto nla_put_failure;
 875                         if (nla_put_u32(msg,
 876                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 877                                         chan->dfs_cac_ms))
 878                                 goto nla_put_failure;
 879                 }
 880         }
 881
 882         if (large) {
 883                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 884                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 885                         goto nla_put_failure;
 886                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 887                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 888                         goto nla_put_failure;
 889                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 890                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 891                         goto nla_put_failure;
 892                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 893                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 894                         goto nla_put_failure;
 895                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 896                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 897                         goto nla_put_failure;
 898                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 899                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 900                         goto nla_put_failure;
 901                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 902                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 903                         goto nla_put_failure;
 904                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 905                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 906                         goto nla_put_failure;
 907         }
 908
 909         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 910                         DBM_TO_MBM(chan->max_power)))
 911                 goto nla_put_failure;
 912
 913         if (large) {
 914                 const struct ieee80211_reg_rule *rule =
 915                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 916
 917                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 918                         if (nl80211_msg_put_wmm_rules(msg, rule))
 919                                 goto nla_put_failure;
 920                 }
 921         }
 922
 923         return 0;
 924
 925  nla_put_failure:
 926         return -ENOBUFS;
 927 }
 928
 929 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 930                                   struct cfg80211_txq_stats *txqstats,
 931                                   int attrtype)
 932 {
 933         struct nlattr *txqattr;
 934
 935 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 936         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 937             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
 938                 return false;                                             \
 939         } while (0)
 940
 941         txqattr = nla_nest_start_noflag(msg, attrtype);
 942         if (!txqattr)
 943                 return false;
 944
 945         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
 946         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
 947         PUT_TXQVAL_U32(FLOWS, flows);
 948         PUT_TXQVAL_U32(DROPS, drops);
 949         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
 950         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
 951         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
 952         PUT_TXQVAL_U32(COLLISIONS, collisions);
 953         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
 954         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
 955         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
 956         nla_nest_end(msg, txqattr);
 957
 958 #undef PUT_TXQVAL_U32
 959         return true;
 960 }
 961
 962 /* netlink command implementations */
 963
 964 struct key_parse {
 965         struct key_params p;
 966         int idx;
 967         int type;
 968         bool def, defmgmt;
 969         bool def_uni, def_multi;
 970 };
 971
 972 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
 973                                  struct key_parse *k)
 974 {
 975         struct nlattr *tb[NL80211_KEY_MAX + 1];
 976         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
 977                                               nl80211_key_policy,
 978                                               info->extack);
 979         if (err)
 980                 return err;
 981
 982         k->def = !!tb[NL80211_KEY_DEFAULT];
 983         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 984
 985         if (k->def) {
 986                 k->def_uni = true;
 987                 k->def_multi = true;
 988         }
 989         if (k->defmgmt)
 990                 k->def_multi = true;
 991
 992         if (tb[NL80211_KEY_IDX])
 993                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 994
 995         if (tb[NL80211_KEY_DATA]) {
 996                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 997                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 998         }
 999
1000         if (tb[NL80211_KEY_SEQ]) {
1001                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1002                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1003         }
1004
1005         if (tb[NL80211_KEY_CIPHER])
1006                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1007
1008         if (tb[NL80211_KEY_TYPE])
1009                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1010
1011         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1012                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1013
1014                 err = nla_parse_nested_deprecated(kdt,
1015                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1016                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1017                                                   nl80211_key_default_policy,
1018                                                   info->extack);
1019                 if (err)
1020                         return err;
1021
1022                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1023                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1024         }
1025
1026         if (tb[NL80211_KEY_MODE])
1027                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1028
1029         return 0;
1030 }
1031
1032 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1033 {
1034         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1035                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1036                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1037         }
1038
1039         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1040                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1041                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1042         }
1043
1044         if (info->attrs[NL80211_ATTR_KEY_IDX])
1045                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1046
1047         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1048                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1049
1050         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1051         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1052
1053         if (k->def) {
1054                 k->def_uni = true;
1055                 k->def_multi = true;
1056         }
1057         if (k->defmgmt)
1058                 k->def_multi = true;
1059
1060         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1061                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1062
1063         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1064                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1065                 int err = nla_parse_nested_deprecated(kdt,
1066                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1067                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1068                                                       nl80211_key_default_policy,
1069                                                       info->extack);
1070                 if (err)
1071                         return err;
1072
1073                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1074                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1075         }
1076
1077         return 0;
1078 }
1079
1080 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1081 {
1082         int err;
1083
1084         memset(k, 0, sizeof(*k));
1085         k->idx = -1;
1086         k->type = -1;
1087
1088         if (info->attrs[NL80211_ATTR_KEY])
1089                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1090         else
1091                 err = nl80211_parse_key_old(info, k);
1092
1093         if (err)
1094                 return err;
1095
1096         if (k->def && k->defmgmt) {
1097                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1098                 return -EINVAL;
1099         }
1100
1101         if (k->defmgmt) {
1102                 if (k->def_uni || !k->def_multi) {
1103                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1104                         return -EINVAL;
1105                 }
1106         }
1107
1108         if (k->idx != -1) {
1109                 if (k->defmgmt) {
1110                         if (k->idx < 4 || k->idx > 5) {
1111                                 GENL_SET_ERR_MSG(info,
1112                                                  "defmgmt key idx not 4 or 5");
1113                                 return -EINVAL;
1114                         }
1115                 } else if (k->def) {
1116                         if (k->idx < 0 || k->idx > 3) {
1117                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1118                                 return -EINVAL;
1119                         }
1120                 } else {
1121                         if (k->idx < 0 || k->idx > 5) {
1122                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1123                                 return -EINVAL;
1124                         }
1125                 }
1126         }
1127
1128         return 0;
1129 }
1130
1131 static struct cfg80211_cached_keys *
1132 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1133                        struct genl_info *info, bool *no_ht)
1134 {
1135         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1136         struct key_parse parse;
1137         struct nlattr *key;
1138         struct cfg80211_cached_keys *result;
1139         int rem, err, def = 0;
1140         bool have_key = false;
1141
1142         nla_for_each_nested(key, keys, rem) {
1143                 have_key = true;
1144                 break;
1145         }
1146
1147         if (!have_key)
1148                 return NULL;
1149
1150         result = kzalloc(sizeof(*result), GFP_KERNEL);
1151         if (!result)
1152                 return ERR_PTR(-ENOMEM);
1153
1154         result->def = -1;
1155
1156         nla_for_each_nested(key, keys, rem) {
1157                 memset(&parse, 0, sizeof(parse));
1158                 parse.idx = -1;
1159
1160                 err = nl80211_parse_key_new(info, key, &parse);
1161                 if (err)
1162                         goto error;
1163                 err = -EINVAL;
1164                 if (!parse.p.key)
1165                         goto error;
1166                 if (parse.idx < 0 || parse.idx > 3) {
1167                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1168                         goto error;
1169                 }
1170                 if (parse.def) {
1171                         if (def) {
1172                                 GENL_SET_ERR_MSG(info,
1173                                                  "only one key can be default");
1174                                 goto error;
1175                         }
1176                         def = 1;
1177                         result->def = parse.idx;
1178                         if (!parse.def_uni || !parse.def_multi)
1179                                 goto error;
1180                 } else if (parse.defmgmt)
1181                         goto error;
1182                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1183                                                      parse.idx, false, NULL);
1184                 if (err)
1185                         goto error;
1186                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1187                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1188                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1189                         err = -EINVAL;
1190                         goto error;
1191                 }
1192                 result->params[parse.idx].cipher = parse.p.cipher;
1193                 result->params[parse.idx].key_len = parse.p.key_len;
1194                 result->params[parse.idx].key = result->data[parse.idx];
1195                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1196
1197                 /* must be WEP key if we got here */
1198                 if (no_ht)
1199                         *no_ht = true;
1200         }
1201
1202         if (result->def < 0) {
1203                 err = -EINVAL;
1204                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1205                 goto error;
1206         }
1207
1208         return result;
1209  error:
1210         kfree(result);
1211         return ERR_PTR(err);
1212 }
1213
1214 static int nl80211_key_allowed(struct wireless_dev *wdev)
1215 {
1216         ASSERT_WDEV_LOCK(wdev);
1217
1218         switch (wdev->iftype) {
1219         case NL80211_IFTYPE_AP:
1220         case NL80211_IFTYPE_AP_VLAN:
1221         case NL80211_IFTYPE_P2P_GO:
1222         case NL80211_IFTYPE_MESH_POINT:
1223                 break;
1224         case NL80211_IFTYPE_ADHOC:
1225         case NL80211_IFTYPE_STATION:
1226         case NL80211_IFTYPE_P2P_CLIENT:
1227                 if (!wdev->current_bss)
1228                         return -ENOLINK;
1229                 break;
1230         case NL80211_IFTYPE_UNSPECIFIED:
1231         case NL80211_IFTYPE_OCB:
1232         case NL80211_IFTYPE_MONITOR:
1233         case NL80211_IFTYPE_NAN:
1234         case NL80211_IFTYPE_P2P_DEVICE:
1235         case NL80211_IFTYPE_WDS:
1236         case NUM_NL80211_IFTYPES:
1237                 return -EINVAL;
1238         }
1239
1240         return 0;
1241 }
1242
1243 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1244                                                         struct nlattr *tb)
1245 {
1246         struct ieee80211_channel *chan;
1247
1248         if (tb == NULL)
1249                 return NULL;
1250         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1251         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1252                 return NULL;
1253         return chan;
1254 }
1255
1256 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1257 {
1258         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1259         int i;
1260
1261         if (!nl_modes)
1262                 goto nla_put_failure;
1263
1264         i = 0;
1265         while (ifmodes) {
1266                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1267                         goto nla_put_failure;
1268                 ifmodes >>= 1;
1269                 i++;
1270         }
1271
1272         nla_nest_end(msg, nl_modes);
1273         return 0;
1274
1275 nla_put_failure:
1276         return -ENOBUFS;
1277 }
1278
1279 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1280                                           struct sk_buff *msg,
1281                                           bool large)
1282 {
1283         struct nlattr *nl_combis;
1284         int i, j;
1285
1286         nl_combis = nla_nest_start_noflag(msg,
1287                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1288         if (!nl_combis)
1289                 goto nla_put_failure;
1290
1291         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1292                 const struct ieee80211_iface_combination *c;
1293                 struct nlattr *nl_combi, *nl_limits;
1294
1295                 c = &wiphy->iface_combinations[i];
1296
1297                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1298                 if (!nl_combi)
1299                         goto nla_put_failure;
1300
1301                 nl_limits = nla_nest_start_noflag(msg,
1302                                                   NL80211_IFACE_COMB_LIMITS);
1303                 if (!nl_limits)
1304                         goto nla_put_failure;
1305
1306                 for (j = 0; j < c->n_limits; j++) {
1307                         struct nlattr *nl_limit;
1308
1309                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1310                         if (!nl_limit)
1311                                 goto nla_put_failure;
1312                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1313                                         c->limits[j].max))
1314                                 goto nla_put_failure;
1315                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1316                                                 c->limits[j].types))
1317                                 goto nla_put_failure;
1318                         nla_nest_end(msg, nl_limit);
1319                 }
1320
1321                 nla_nest_end(msg, nl_limits);
1322
1323                 if (c->beacon_int_infra_match &&
1324                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1325                         goto nla_put_failure;
1326                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1327                                 c->num_different_channels) ||
1328                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1329                                 c->max_interfaces))
1330                         goto nla_put_failure;
1331                 if (large &&
1332                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1333                                 c->radar_detect_widths) ||
1334                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1335                                 c->radar_detect_regions)))
1336                         goto nla_put_failure;
1337                 if (c->beacon_int_min_gcd &&
1338                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1339                                 c->beacon_int_min_gcd))
1340                         goto nla_put_failure;
1341
1342                 nla_nest_end(msg, nl_combi);
1343         }
1344
1345         nla_nest_end(msg, nl_combis);
1346
1347         return 0;
1348 nla_put_failure:
1349         return -ENOBUFS;
1350 }
1351
1352 #ifdef CONFIG_PM
1353 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1354                                         struct sk_buff *msg)
1355 {
1356         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1357         struct nlattr *nl_tcp;
1358
1359         if (!tcp)
1360                 return 0;
1361
1362         nl_tcp = nla_nest_start_noflag(msg,
1363                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1364         if (!nl_tcp)
1365                 return -ENOBUFS;
1366
1367         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1368                         tcp->data_payload_max))
1369                 return -ENOBUFS;
1370
1371         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1372                         tcp->data_payload_max))
1373                 return -ENOBUFS;
1374
1375         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1376                 return -ENOBUFS;
1377
1378         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1379                                 sizeof(*tcp->tok), tcp->tok))
1380                 return -ENOBUFS;
1381
1382         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1383                         tcp->data_interval_max))
1384                 return -ENOBUFS;
1385
1386         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1387                         tcp->wake_payload_max))
1388                 return -ENOBUFS;
1389
1390         nla_nest_end(msg, nl_tcp);
1391         return 0;
1392 }
1393
1394 static int nl80211_send_wowlan(struct sk_buff *msg,
1395                                struct cfg80211_registered_device *rdev,
1396                                bool large)
1397 {
1398         struct nlattr *nl_wowlan;
1399
1400         if (!rdev->wiphy.wowlan)
1401                 return 0;
1402
1403         nl_wowlan = nla_nest_start_noflag(msg,
1404                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1405         if (!nl_wowlan)
1406                 return -ENOBUFS;
1407
1408         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1409              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1410             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1411              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1412             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1413              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1414             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1415              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1416             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1417              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1418             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1419              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1420             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1421              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1422             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1423              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1424                 return -ENOBUFS;
1425
1426         if (rdev->wiphy.wowlan->n_patterns) {
1427                 struct nl80211_pattern_support pat = {
1428                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1429                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1430                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1431                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1432                 };
1433
1434                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1435                             sizeof(pat), &pat))
1436                         return -ENOBUFS;
1437         }
1438
1439         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1440             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1441                         rdev->wiphy.wowlan->max_nd_match_sets))
1442                 return -ENOBUFS;
1443
1444         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1445                 return -ENOBUFS;
1446
1447         nla_nest_end(msg, nl_wowlan);
1448
1449         return 0;
1450 }
1451 #endif
1452
1453 static int nl80211_send_coalesce(struct sk_buff *msg,
1454                                  struct cfg80211_registered_device *rdev)
1455 {
1456         struct nl80211_coalesce_rule_support rule;
1457
1458         if (!rdev->wiphy.coalesce)
1459                 return 0;
1460
1461         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1462         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1463         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1464         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1465         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1466         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1467
1468         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1469                 return -ENOBUFS;
1470
1471         return 0;
1472 }
1473
1474 static int
1475 nl80211_send_iftype_data(struct sk_buff *msg,
1476                          const struct ieee80211_sband_iftype_data *iftdata)
1477 {
1478         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1479
1480         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1481                                 iftdata->types_mask))
1482                 return -ENOBUFS;
1483
1484         if (he_cap->has_he) {
1485                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1486                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1487                             he_cap->he_cap_elem.mac_cap_info) ||
1488                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1489                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1490                             he_cap->he_cap_elem.phy_cap_info) ||
1491                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1492                             sizeof(he_cap->he_mcs_nss_supp),
1493                             &he_cap->he_mcs_nss_supp) ||
1494                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1495                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1496                         return -ENOBUFS;
1497         }
1498
1499         return 0;
1500 }
1501
1502 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1503                                       struct ieee80211_supported_band *sband)
1504 {
1505         struct nlattr *nl_rates, *nl_rate;
1506         struct ieee80211_rate *rate;
1507         int i;
1508
1509         /* add HT info */
1510         if (sband->ht_cap.ht_supported &&
1511             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1512                      sizeof(sband->ht_cap.mcs),
1513                      &sband->ht_cap.mcs) ||
1514              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1515                          sband->ht_cap.cap) ||
1516              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1517                         sband->ht_cap.ampdu_factor) ||
1518              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1519                         sband->ht_cap.ampdu_density)))
1520                 return -ENOBUFS;
1521
1522         /* add VHT info */
1523         if (sband->vht_cap.vht_supported &&
1524             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1525                      sizeof(sband->vht_cap.vht_mcs),
1526                      &sband->vht_cap.vht_mcs) ||
1527              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1528                          sband->vht_cap.cap)))
1529                 return -ENOBUFS;
1530
1531         if (sband->n_iftype_data) {
1532                 struct nlattr *nl_iftype_data =
1533                         nla_nest_start_noflag(msg,
1534                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1535                 int err;
1536
1537                 if (!nl_iftype_data)
1538                         return -ENOBUFS;
1539
1540                 for (i = 0; i < sband->n_iftype_data; i++) {
1541                         struct nlattr *iftdata;
1542
1543                         iftdata = nla_nest_start_noflag(msg, i + 1);
1544                         if (!iftdata)
1545                                 return -ENOBUFS;
1546
1547                         err = nl80211_send_iftype_data(msg,
1548                                                        &sband->iftype_data[i]);
1549                         if (err)
1550                                 return err;
1551
1552                         nla_nest_end(msg, iftdata);
1553                 }
1554
1555                 nla_nest_end(msg, nl_iftype_data);
1556         }
1557
1558         /* add bitrates */
1559         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1560         if (!nl_rates)
1561                 return -ENOBUFS;
1562
1563         for (i = 0; i < sband->n_bitrates; i++) {
1564                 nl_rate = nla_nest_start_noflag(msg, i);
1565                 if (!nl_rate)
1566                         return -ENOBUFS;
1567
1568                 rate = &sband->bitrates[i];
1569                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1570                                 rate->bitrate))
1571                         return -ENOBUFS;
1572                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1573                     nla_put_flag(msg,
1574                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1575                         return -ENOBUFS;
1576
1577                 nla_nest_end(msg, nl_rate);
1578         }
1579
1580         nla_nest_end(msg, nl_rates);
1581
1582         return 0;
1583 }
1584
1585 static int
1586 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1587                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1588 {
1589         u16 stypes;
1590         struct nlattr *nl_ftypes, *nl_ifs;
1591         enum nl80211_iftype ift;
1592         int i;
1593
1594         if (!mgmt_stypes)
1595                 return 0;
1596
1597         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1598         if (!nl_ifs)
1599                 return -ENOBUFS;
1600
1601         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1602                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1603                 if (!nl_ftypes)
1604                         return -ENOBUFS;
1605                 i = 0;
1606                 stypes = mgmt_stypes[ift].tx;
1607                 while (stypes) {
1608                         if ((stypes & 1) &&
1609                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1610                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1611                                 return -ENOBUFS;
1612                         stypes >>= 1;
1613                         i++;
1614                 }
1615                 nla_nest_end(msg, nl_ftypes);
1616         }
1617
1618         nla_nest_end(msg, nl_ifs);
1619
1620         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1621         if (!nl_ifs)
1622                 return -ENOBUFS;
1623
1624         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1625                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1626                 if (!nl_ftypes)
1627                         return -ENOBUFS;
1628                 i = 0;
1629                 stypes = mgmt_stypes[ift].rx;
1630                 while (stypes) {
1631                         if ((stypes & 1) &&
1632                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1633                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1634                                 return -ENOBUFS;
1635                         stypes >>= 1;
1636                         i++;
1637                 }
1638                 nla_nest_end(msg, nl_ftypes);
1639         }
1640         nla_nest_end(msg, nl_ifs);
1641
1642         return 0;
1643 }
1644
1645 #define CMD(op, n)                                                      \
1646          do {                                                           \
1647                 if (rdev->ops->op) {                                    \
1648                         i++;                                            \
1649                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1650                                 goto nla_put_failure;                   \
1651                 }                                                       \
1652         } while (0)
1653
1654 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1655                                         struct sk_buff *msg)
1656 {
1657         int i = 0;
1658
1659         /*
1660          * do *NOT* add anything into this function, new things need to be
1661          * advertised only to new versions of userspace that can deal with
1662          * the split (and they can't possibly care about new features...
1663          */
1664         CMD(add_virtual_intf, NEW_INTERFACE);
1665         CMD(change_virtual_intf, SET_INTERFACE);
1666         CMD(add_key, NEW_KEY);
1667         CMD(start_ap, START_AP);
1668         CMD(add_station, NEW_STATION);
1669         CMD(add_mpath, NEW_MPATH);
1670         CMD(update_mesh_config, SET_MESH_CONFIG);
1671         CMD(change_bss, SET_BSS);
1672         CMD(auth, AUTHENTICATE);
1673         CMD(assoc, ASSOCIATE);
1674         CMD(deauth, DEAUTHENTICATE);
1675         CMD(disassoc, DISASSOCIATE);
1676         CMD(join_ibss, JOIN_IBSS);
1677         CMD(join_mesh, JOIN_MESH);
1678         CMD(set_pmksa, SET_PMKSA);
1679         CMD(del_pmksa, DEL_PMKSA);
1680         CMD(flush_pmksa, FLUSH_PMKSA);
1681         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1682                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1683         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1684         CMD(mgmt_tx, FRAME);
1685         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1686         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1687                 i++;
1688                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1689                         goto nla_put_failure;
1690         }
1691         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1692             rdev->ops->join_mesh) {
1693                 i++;
1694                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1695                         goto nla_put_failure;
1696         }
1697         CMD(set_wds_peer, SET_WDS_PEER);
1698         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1699                 CMD(tdls_mgmt, TDLS_MGMT);
1700                 CMD(tdls_oper, TDLS_OPER);
1701         }
1702         if (rdev->wiphy.max_sched_scan_reqs)
1703                 CMD(sched_scan_start, START_SCHED_SCAN);
1704         CMD(probe_client, PROBE_CLIENT);
1705         CMD(set_noack_map, SET_NOACK_MAP);
1706         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1707                 i++;
1708                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1709                         goto nla_put_failure;
1710         }
1711         CMD(start_p2p_device, START_P2P_DEVICE);
1712         CMD(set_mcast_rate, SET_MCAST_RATE);
1713 #ifdef CONFIG_NL80211_TESTMODE
1714         CMD(testmode_cmd, TESTMODE);
1715 #endif
1716
1717         if (rdev->ops->connect || rdev->ops->auth) {
1718                 i++;
1719                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1720                         goto nla_put_failure;
1721         }
1722
1723         if (rdev->ops->disconnect || rdev->ops->deauth) {
1724                 i++;
1725                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1726                         goto nla_put_failure;
1727         }
1728
1729         return i;
1730  nla_put_failure:
1731         return -ENOBUFS;
1732 }
1733
1734 static int
1735 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1736                            struct sk_buff *msg)
1737 {
1738         struct nlattr *ftm;
1739
1740         if (!cap->ftm.supported)
1741                 return 0;
1742
1743         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1744         if (!ftm)
1745                 return -ENOBUFS;
1746
1747         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1748                 return -ENOBUFS;
1749         if (cap->ftm.non_asap &&
1750             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1751                 return -ENOBUFS;
1752         if (cap->ftm.request_lci &&
1753             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1754                 return -ENOBUFS;
1755         if (cap->ftm.request_civicloc &&
1756             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1757                 return -ENOBUFS;
1758         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1759                         cap->ftm.preambles))
1760                 return -ENOBUFS;
1761         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1762                         cap->ftm.bandwidths))
1763                 return -ENOBUFS;
1764         if (cap->ftm.max_bursts_exponent >= 0 &&
1765             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1766                         cap->ftm.max_bursts_exponent))
1767                 return -ENOBUFS;
1768         if (cap->ftm.max_ftms_per_burst &&
1769             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1770                         cap->ftm.max_ftms_per_burst))
1771                 return -ENOBUFS;
1772
1773         nla_nest_end(msg, ftm);
1774         return 0;
1775 }
1776
1777 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1778                                   struct sk_buff *msg)
1779 {
1780         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1781         struct nlattr *pmsr, *caps;
1782
1783         if (!cap)
1784                 return 0;
1785
1786         /*
1787          * we don't need to clean up anything here since the caller
1788          * will genlmsg_cancel() if we fail
1789          */
1790
1791         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1792         if (!pmsr)
1793                 return -ENOBUFS;
1794
1795         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1796                 return -ENOBUFS;
1797
1798         if (cap->report_ap_tsf &&
1799             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1800                 return -ENOBUFS;
1801
1802         if (cap->randomize_mac_addr &&
1803             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1804                 return -ENOBUFS;
1805
1806         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1807         if (!caps)
1808                 return -ENOBUFS;
1809
1810         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1811                 return -ENOBUFS;
1812
1813         nla_nest_end(msg, caps);
1814         nla_nest_end(msg, pmsr);
1815
1816         return 0;
1817 }
1818
1819 struct nl80211_dump_wiphy_state {
1820         s64 filter_wiphy;
1821         long start;
1822         long split_start, band_start, chan_start, capa_start;
1823         bool split;
1824 };
1825
1826 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1827                               enum nl80211_commands cmd,
1828                               struct sk_buff *msg, u32 portid, u32 seq,
1829                               int flags, struct nl80211_dump_wiphy_state *state)
1830 {
1831         void *hdr;
1832         struct nlattr *nl_bands, *nl_band;
1833         struct nlattr *nl_freqs, *nl_freq;
1834         struct nlattr *nl_cmds;
1835         enum nl80211_band band;
1836         struct ieee80211_channel *chan;
1837         int i;
1838         const struct ieee80211_txrx_stypes *mgmt_stypes =
1839                                 rdev->wiphy.mgmt_stypes;
1840         u32 features;
1841
1842         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1843         if (!hdr)
1844                 return -ENOBUFS;
1845
1846         if (WARN_ON(!state))
1847                 return -EINVAL;
1848
1849         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1850             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1851                            wiphy_name(&rdev->wiphy)) ||
1852             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1853                         cfg80211_rdev_list_generation))
1854                 goto nla_put_failure;
1855
1856         if (cmd != NL80211_CMD_NEW_WIPHY)
1857                 goto finish;
1858
1859         switch (state->split_start) {
1860         case 0:
1861                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1862                                rdev->wiphy.retry_short) ||
1863                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1864                                rdev->wiphy.retry_long) ||
1865                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1866                                 rdev->wiphy.frag_threshold) ||
1867                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1868                                 rdev->wiphy.rts_threshold) ||
1869                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1870                                rdev->wiphy.coverage_class) ||
1871                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1872                                rdev->wiphy.max_scan_ssids) ||
1873                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1874                                rdev->wiphy.max_sched_scan_ssids) ||
1875                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1876                                 rdev->wiphy.max_scan_ie_len) ||
1877                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1878                                 rdev->wiphy.max_sched_scan_ie_len) ||
1879                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1880                                rdev->wiphy.max_match_sets) ||
1881                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1882                                 rdev->wiphy.max_sched_scan_plans) ||
1883                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1884                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1885                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1886                                 rdev->wiphy.max_sched_scan_plan_iterations))
1887                         goto nla_put_failure;
1888
1889                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1890                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1891                         goto nla_put_failure;
1892                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1893                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1894                         goto nla_put_failure;
1895                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1896                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1897                         goto nla_put_failure;
1898                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1899                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1900                         goto nla_put_failure;
1901                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1902                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1903                         goto nla_put_failure;
1904                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1905                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1906                         goto nla_put_failure;
1907                 state->split_start++;
1908                 if (state->split)
1909                         break;
1910                 /* fall through */
1911         case 1:
1912                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1913                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1914                             rdev->wiphy.cipher_suites))
1915                         goto nla_put_failure;
1916
1917                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1918                                rdev->wiphy.max_num_pmkids))
1919                         goto nla_put_failure;
1920
1921                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1922                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1923                         goto nla_put_failure;
1924
1925                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1926                                 rdev->wiphy.available_antennas_tx) ||
1927                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1928                                 rdev->wiphy.available_antennas_rx))
1929                         goto nla_put_failure;
1930
1931                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1932                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1933                                 rdev->wiphy.probe_resp_offload))
1934                         goto nla_put_failure;
1935
1936                 if ((rdev->wiphy.available_antennas_tx ||
1937                      rdev->wiphy.available_antennas_rx) &&
1938                     rdev->ops->get_antenna) {
1939                         u32 tx_ant = 0, rx_ant = 0;
1940                         int res;
1941
1942                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1943                         if (!res) {
1944                                 if (nla_put_u32(msg,
1945                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1946                                                 tx_ant) ||
1947                                     nla_put_u32(msg,
1948                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1949                                                 rx_ant))
1950                                         goto nla_put_failure;
1951                         }
1952                 }
1953
1954                 state->split_start++;
1955                 if (state->split)
1956                         break;
1957                 /* fall through */
1958         case 2:
1959                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1960                                         rdev->wiphy.interface_modes))
1961                                 goto nla_put_failure;
1962                 state->split_start++;
1963                 if (state->split)
1964                         break;
1965                 /* fall through */
1966         case 3:
1967                 nl_bands = nla_nest_start_noflag(msg,
1968                                                  NL80211_ATTR_WIPHY_BANDS);
1969                 if (!nl_bands)
1970                         goto nla_put_failure;
1971
1972                 for (band = state->band_start;
1973                      band < NUM_NL80211_BANDS; band++) {
1974                         struct ieee80211_supported_band *sband;
1975
1976                         sband = rdev->wiphy.bands[band];
1977
1978                         if (!sband)
1979                                 continue;
1980
1981                         nl_band = nla_nest_start_noflag(msg, band);
1982                         if (!nl_band)
1983                                 goto nla_put_failure;
1984
1985                         switch (state->chan_start) {
1986                         case 0:
1987                                 if (nl80211_send_band_rateinfo(msg, sband))
1988                                         goto nla_put_failure;
1989                                 state->chan_start++;
1990                                 if (state->split)
1991                                         break;
1992                                 /* fall through */
1993                         default:
1994                                 /* add frequencies */
1995                                 nl_freqs = nla_nest_start_noflag(msg,
1996                                                                  NL80211_BAND_ATTR_FREQS);
1997                                 if (!nl_freqs)
1998                                         goto nla_put_failure;
1999
2000                                 for (i = state->chan_start - 1;
2001                                      i < sband->n_channels;
2002                                      i++) {
2003                                         nl_freq = nla_nest_start_noflag(msg,
2004                                                                         i);
2005                                         if (!nl_freq)
2006                                                 goto nla_put_failure;
2007
2008                                         chan = &sband->channels[i];
2009
2010                                         if (nl80211_msg_put_channel(
2011                                                         msg, &rdev->wiphy, chan,
2012                                                         state->split))
2013                                                 goto nla_put_failure;
2014
2015                                         nla_nest_end(msg, nl_freq);
2016                                         if (state->split)
2017                                                 break;
2018                                 }
2019                                 if (i < sband->n_channels)
2020                                         state->chan_start = i + 2;
2021                                 else
2022                                         state->chan_start = 0;
2023                                 nla_nest_end(msg, nl_freqs);
2024                         }
2025
2026                         nla_nest_end(msg, nl_band);
2027
2028                         if (state->split) {
2029                                 /* start again here */
2030                                 if (state->chan_start)
2031                                         band--;
2032                                 break;
2033                         }
2034                 }
2035                 nla_nest_end(msg, nl_bands);
2036
2037                 if (band < NUM_NL80211_BANDS)
2038                         state->band_start = band + 1;
2039                 else
2040                         state->band_start = 0;
2041
2042                 /* if bands & channels are done, continue outside */
2043                 if (state->band_start == 0 && state->chan_start == 0)
2044                         state->split_start++;
2045                 if (state->split)
2046                         break;
2047                 /* fall through */
2048         case 4:
2049                 nl_cmds = nla_nest_start_noflag(msg,
2050                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2051                 if (!nl_cmds)
2052                         goto nla_put_failure;
2053
2054                 i = nl80211_add_commands_unsplit(rdev, msg);
2055                 if (i < 0)
2056                         goto nla_put_failure;
2057                 if (state->split) {
2058                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2059                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2060                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2061                                 CMD(channel_switch, CHANNEL_SWITCH);
2062                         CMD(set_qos_map, SET_QOS_MAP);
2063                         if (rdev->wiphy.features &
2064                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2065                                 CMD(add_tx_ts, ADD_TX_TS);
2066                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2067                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2068                 }
2069 #undef CMD
2070
2071                 nla_nest_end(msg, nl_cmds);
2072                 state->split_start++;
2073                 if (state->split)
2074                         break;
2075                 /* fall through */
2076         case 5:
2077                 if (rdev->ops->remain_on_channel &&
2078                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2079                     nla_put_u32(msg,
2080                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2081                                 rdev->wiphy.max_remain_on_channel_duration))
2082                         goto nla_put_failure;
2083
2084                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2085                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2086                         goto nla_put_failure;
2087
2088                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2089                         goto nla_put_failure;
2090                 state->split_start++;
2091                 if (state->split)
2092                         break;
2093                 /* fall through */
2094         case 6:
2095 #ifdef CONFIG_PM
2096                 if (nl80211_send_wowlan(msg, rdev, state->split))
2097                         goto nla_put_failure;
2098                 state->split_start++;
2099                 if (state->split)
2100                         break;
2101 #else
2102                 state->split_start++;
2103 #endif
2104                 /* fall through */
2105         case 7:
2106                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2107                                         rdev->wiphy.software_iftypes))
2108                         goto nla_put_failure;
2109
2110                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2111                                                    state->split))
2112                         goto nla_put_failure;
2113
2114                 state->split_start++;
2115                 if (state->split)
2116                         break;
2117                 /* fall through */
2118         case 8:
2119                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2120                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2121                                 rdev->wiphy.ap_sme_capa))
2122                         goto nla_put_failure;
2123
2124                 features = rdev->wiphy.features;
2125                 /*
2126                  * We can only add the per-channel limit information if the
2127                  * dump is split, otherwise it makes it too big. Therefore
2128                  * only advertise it in that case.
2129                  */
2130                 if (state->split)
2131                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2132                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2133                         goto nla_put_failure;
2134
2135                 if (rdev->wiphy.ht_capa_mod_mask &&
2136                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2137                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2138                             rdev->wiphy.ht_capa_mod_mask))
2139                         goto nla_put_failure;
2140
2141                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2142                     rdev->wiphy.max_acl_mac_addrs &&
2143                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2144                                 rdev->wiphy.max_acl_mac_addrs))
2145                         goto nla_put_failure;
2146
2147                 /*
2148                  * Any information below this point is only available to
2149                  * applications that can deal with it being split. This
2150                  * helps ensure that newly added capabilities don't break
2151                  * older tools by overrunning their buffers.
2152                  *
2153                  * We still increment split_start so that in the split
2154                  * case we'll continue with more data in the next round,
2155                  * but break unconditionally so unsplit data stops here.
2156                  */
2157                 state->split_start++;
2158                 break;
2159         case 9:
2160                 if (rdev->wiphy.extended_capabilities &&
2161                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2162                              rdev->wiphy.extended_capabilities_len,
2163                              rdev->wiphy.extended_capabilities) ||
2164                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2165                              rdev->wiphy.extended_capabilities_len,
2166                              rdev->wiphy.extended_capabilities_mask)))
2167                         goto nla_put_failure;
2168
2169                 if (rdev->wiphy.vht_capa_mod_mask &&
2170                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2171                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2172                             rdev->wiphy.vht_capa_mod_mask))
2173                         goto nla_put_failure;
2174
2175                 state->split_start++;
2176                 break;
2177         case 10:
2178                 if (nl80211_send_coalesce(msg, rdev))
2179                         goto nla_put_failure;
2180
2181                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2182                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2183                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2184                         goto nla_put_failure;
2185
2186                 if (rdev->wiphy.max_ap_assoc_sta &&
2187                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2188                                 rdev->wiphy.max_ap_assoc_sta))
2189                         goto nla_put_failure;
2190
2191                 state->split_start++;
2192                 break;
2193         case 11:
2194                 if (rdev->wiphy.n_vendor_commands) {
2195                         const struct nl80211_vendor_cmd_info *info;
2196                         struct nlattr *nested;
2197
2198                         nested = nla_nest_start_noflag(msg,
2199                                                        NL80211_ATTR_VENDOR_DATA);
2200                         if (!nested)
2201                                 goto nla_put_failure;
2202
2203                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2204                                 info = &rdev->wiphy.vendor_commands[i].info;
2205                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2206                                         goto nla_put_failure;
2207                         }
2208                         nla_nest_end(msg, nested);
2209                 }
2210
2211                 if (rdev->wiphy.n_vendor_events) {
2212                         const struct nl80211_vendor_cmd_info *info;
2213                         struct nlattr *nested;
2214
2215                         nested = nla_nest_start_noflag(msg,
2216                                                        NL80211_ATTR_VENDOR_EVENTS);
2217                         if (!nested)
2218                                 goto nla_put_failure;
2219
2220                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2221                                 info = &rdev->wiphy.vendor_events[i];
2222                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2223                                         goto nla_put_failure;
2224                         }
2225                         nla_nest_end(msg, nested);
2226                 }
2227                 state->split_start++;
2228                 break;
2229         case 12:
2230                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2231                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2232                                rdev->wiphy.max_num_csa_counters))
2233                         goto nla_put_failure;
2234
2235                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2236                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2237                         goto nla_put_failure;
2238
2239                 if (rdev->wiphy.max_sched_scan_reqs &&
2240                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2241                                 rdev->wiphy.max_sched_scan_reqs))
2242                         goto nla_put_failure;
2243
2244                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2245                             sizeof(rdev->wiphy.ext_features),
2246                             rdev->wiphy.ext_features))
2247                         goto nla_put_failure;
2248
2249                 if (rdev->wiphy.bss_select_support) {
2250                         struct nlattr *nested;
2251                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2252
2253                         nested = nla_nest_start_noflag(msg,
2254                                                        NL80211_ATTR_BSS_SELECT);
2255                         if (!nested)
2256                                 goto nla_put_failure;
2257
2258                         i = 0;
2259                         while (bss_select_support) {
2260                                 if ((bss_select_support & 1) &&
2261                                     nla_put_flag(msg, i))
2262                                         goto nla_put_failure;
2263                                 i++;
2264                                 bss_select_support >>= 1;
2265                         }
2266                         nla_nest_end(msg, nested);
2267                 }
2268
2269                 state->split_start++;
2270                 break;
2271         case 13:
2272                 if (rdev->wiphy.num_iftype_ext_capab &&
2273                     rdev->wiphy.iftype_ext_capab) {
2274                         struct nlattr *nested_ext_capab, *nested;
2275
2276                         nested = nla_nest_start_noflag(msg,
2277                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2278                         if (!nested)
2279                                 goto nla_put_failure;
2280
2281                         for (i = state->capa_start;
2282                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2283                                 const struct wiphy_iftype_ext_capab *capab;
2284
2285                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2286
2287                                 nested_ext_capab = nla_nest_start_noflag(msg,
2288                                                                          i);
2289                                 if (!nested_ext_capab ||
2290                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2291                                                 capab->iftype) ||
2292                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2293                                             capab->extended_capabilities_len,
2294                                             capab->extended_capabilities) ||
2295                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2296                                             capab->extended_capabilities_len,
2297                                             capab->extended_capabilities_mask))
2298                                         goto nla_put_failure;
2299
2300                                 nla_nest_end(msg, nested_ext_capab);
2301                                 if (state->split)
2302                                         break;
2303                         }
2304                         nla_nest_end(msg, nested);
2305                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2306                                 state->capa_start = i + 1;
2307                                 break;
2308                         }
2309                 }
2310
2311                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2312                                 rdev->wiphy.nan_supported_bands))
2313                         goto nla_put_failure;
2314
2315                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2316                                             NL80211_EXT_FEATURE_TXQS)) {
2317                         struct cfg80211_txq_stats txqstats = {};
2318                         int res;
2319
2320                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2321                         if (!res &&
2322                             !nl80211_put_txq_stats(msg, &txqstats,
2323                                                    NL80211_ATTR_TXQ_STATS))
2324                                 goto nla_put_failure;
2325
2326                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2327                                         rdev->wiphy.txq_limit))
2328                                 goto nla_put_failure;
2329                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2330                                         rdev->wiphy.txq_memory_limit))
2331                                 goto nla_put_failure;
2332                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2333                                         rdev->wiphy.txq_quantum))
2334                                 goto nla_put_failure;
2335                 }
2336
2337                 state->split_start++;
2338                 break;
2339         case 14:
2340                 if (nl80211_send_pmsr_capa(rdev, msg))
2341                         goto nla_put_failure;
2342
2343                 state->split_start++;
2344                 break;
2345         case 15:
2346                 if (rdev->wiphy.akm_suites &&
2347                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2348                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2349                             rdev->wiphy.akm_suites))
2350                         goto nla_put_failure;
2351
2352                 /* done */
2353                 state->split_start = 0;
2354                 break;
2355         }
2356  finish:
2357         genlmsg_end(msg, hdr);
2358         return 0;
2359
2360  nla_put_failure:
2361         genlmsg_cancel(msg, hdr);
2362         return -EMSGSIZE;
2363 }
2364
2365 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2366                                     struct netlink_callback *cb,
2367                                     struct nl80211_dump_wiphy_state *state)
2368 {
2369         struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
2370         int ret = nlmsg_parse_deprecated(cb->nlh,
2371                                          GENL_HDRLEN + nl80211_fam.hdrsize,
2372                                          tb, nl80211_fam.maxattr,
2373                                          nl80211_policy, NULL);
2374         /* ignore parse errors for backward compatibility */
2375         if (ret)
2376                 return 0;
2377
2378         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2379         if (tb[NL80211_ATTR_WIPHY])
2380                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2381         if (tb[NL80211_ATTR_WDEV])
2382                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2383         if (tb[NL80211_ATTR_IFINDEX]) {
2384                 struct net_device *netdev;
2385                 struct cfg80211_registered_device *rdev;
2386                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2387
2388                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2389                 if (!netdev)
2390                         return -ENODEV;
2391                 if (netdev->ieee80211_ptr) {
2392                         rdev = wiphy_to_rdev(
2393                                 netdev->ieee80211_ptr->wiphy);
2394                         state->filter_wiphy = rdev->wiphy_idx;
2395                 }
2396         }
2397
2398         return 0;
2399 }
2400
2401 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2402 {
2403         int idx = 0, ret;
2404         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2405         struct cfg80211_registered_device *rdev;
2406
2407         rtnl_lock();
2408         if (!state) {
2409                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2410                 if (!state) {
2411                         rtnl_unlock();
2412                         return -ENOMEM;
2413                 }
2414                 state->filter_wiphy = -1;
2415                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2416                 if (ret) {
2417                         kfree(state);
2418                         rtnl_unlock();
2419                         return ret;
2420                 }
2421                 cb->args[0] = (long)state;
2422         }
2423
2424         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2425                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2426                         continue;
2427                 if (++idx <= state->start)
2428                         continue;
2429                 if (state->filter_wiphy != -1 &&
2430                     state->filter_wiphy != rdev->wiphy_idx)
2431                         continue;
2432                 /* attempt to fit multiple wiphy data chunks into the skb */
2433                 do {
2434                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2435                                                  skb,
2436                                                  NETLINK_CB(cb->skb).portid,
2437                                                  cb->nlh->nlmsg_seq,
2438                                                  NLM_F_MULTI, state);
2439                         if (ret < 0) {
2440                                 /*
2441                                  * If sending the wiphy data didn't fit (ENOBUFS
2442                                  * or EMSGSIZE returned), this SKB is still
2443                                  * empty (so it's not too big because another
2444                                  * wiphy dataset is already in the skb) and
2445                                  * we've not tried to adjust the dump allocation
2446                                  * yet ... then adjust the alloc size to be
2447                                  * bigger, and return 1 but with the empty skb.
2448                                  * This results in an empty message being RX'ed
2449                                  * in userspace, but that is ignored.
2450                                  *
2451                                  * We can then retry with the larger buffer.
2452                                  */
2453                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2454                                     !skb->len && !state->split &&
2455                                     cb->min_dump_alloc < 4096) {
2456                                         cb->min_dump_alloc = 4096;
2457                                         state->split_start = 0;
2458                                         rtnl_unlock();
2459                                         return 1;
2460                                 }
2461                                 idx--;
2462                                 break;
2463                         }
2464                 } while (state->split_start > 0);
2465                 break;
2466         }
2467         rtnl_unlock();
2468
2469         state->start = idx;
2470
2471         return skb->len;
2472 }
2473
2474 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2475 {
2476         kfree((void *)cb->args[0]);
2477         return 0;
2478 }
2479
2480 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2481 {
2482         struct sk_buff *msg;
2483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2484         struct nl80211_dump_wiphy_state state = {};
2485
2486         msg = nlmsg_new(4096, GFP_KERNEL);
2487         if (!msg)
2488                 return -ENOMEM;
2489
2490         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2491                                info->snd_portid, info->snd_seq, 0,
2492                                &state) < 0) {
2493                 nlmsg_free(msg);
2494                 return -ENOBUFS;
2495         }
2496
2497         return genlmsg_reply(msg, info);
2498 }
2499
2500 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2501         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2502         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2503         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2504         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2505         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2506 };
2507
2508 static int parse_txq_params(struct nlattr *tb[],
2509                             struct ieee80211_txq_params *txq_params)
2510 {
2511         u8 ac;
2512
2513         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2514             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2515             !tb[NL80211_TXQ_ATTR_AIFS])
2516                 return -EINVAL;
2517
2518         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2519         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2520         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2521         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2522         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2523
2524         if (ac >= NL80211_NUM_ACS)
2525                 return -EINVAL;
2526         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2527         return 0;
2528 }
2529
2530 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2531 {
2532         /*
2533          * You can only set the channel explicitly for WDS interfaces,
2534          * all others have their channel managed via their respective
2535          * "establish a connection" command (connect, join, ...)
2536          *
2537          * For AP/GO and mesh mode, the channel can be set with the
2538          * channel userspace API, but is only stored and passed to the
2539          * low-level driver when the AP starts or the mesh is joined.
2540          * This is for backward compatibility, userspace can also give
2541          * the channel in the start-ap or join-mesh commands instead.
2542          *
2543          * Monitors are special as they are normally slaved to
2544          * whatever else is going on, so they have their own special
2545          * operation to set the monitor channel if possible.
2546          */
2547         return !wdev ||
2548                 wdev->iftype == NL80211_IFTYPE_AP ||
2549                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2550                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2551                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2552 }
2553
2554 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2555                           struct genl_info *info,
2556                           struct cfg80211_chan_def *chandef)
2557 {
2558         struct netlink_ext_ack *extack = info->extack;
2559         struct nlattr **attrs = info->attrs;
2560         u32 control_freq;
2561
2562         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2563                 return -EINVAL;
2564
2565         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2566
2567         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2568         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2569         chandef->center_freq1 = control_freq;
2570         chandef->center_freq2 = 0;
2571
2572         /* Primary channel not allowed */
2573         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2574                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2575                                     "Channel is disabled");
2576                 return -EINVAL;
2577         }
2578
2579         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2580                 enum nl80211_channel_type chantype;
2581
2582                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2583
2584                 switch (chantype) {
2585                 case NL80211_CHAN_NO_HT:
2586                 case NL80211_CHAN_HT20:
2587                 case NL80211_CHAN_HT40PLUS:
2588                 case NL80211_CHAN_HT40MINUS:
2589                         cfg80211_chandef_create(chandef, chandef->chan,
2590                                                 chantype);
2591                         /* user input for center_freq is incorrect */
2592                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2593                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2594                                 NL_SET_ERR_MSG_ATTR(extack,
2595                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2596                                                     "bad center frequency 1");
2597                                 return -EINVAL;
2598                         }
2599                         /* center_freq2 must be zero */
2600                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2601                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2602                                 NL_SET_ERR_MSG_ATTR(extack,
2603                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2604                                                     "center frequency 2 can't be used");
2605                                 return -EINVAL;
2606                         }
2607                         break;
2608                 default:
2609                         NL_SET_ERR_MSG_ATTR(extack,
2610                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2611                                             "invalid channel type");
2612                         return -EINVAL;
2613                 }
2614         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2615                 chandef->width =
2616                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2617                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2618                         chandef->center_freq1 =
2619                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2620                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2621                         chandef->center_freq2 =
2622                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2623         }
2624
2625         if (!cfg80211_chandef_valid(chandef)) {
2626                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2627                 return -EINVAL;
2628         }
2629
2630         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2631                                      IEEE80211_CHAN_DISABLED)) {
2632                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2633                 return -EINVAL;
2634         }
2635
2636         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2637              chandef->width == NL80211_CHAN_WIDTH_10) &&
2638             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2639                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2640                 return -EINVAL;
2641         }
2642
2643         return 0;
2644 }
2645
2646 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2647                                  struct net_device *dev,
2648                                  struct genl_info *info)
2649 {
2650         struct cfg80211_chan_def chandef;
2651         int result;
2652         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2653         struct wireless_dev *wdev = NULL;
2654
2655         if (dev)
2656                 wdev = dev->ieee80211_ptr;
2657         if (!nl80211_can_set_dev_channel(wdev))
2658                 return -EOPNOTSUPP;
2659         if (wdev)
2660                 iftype = wdev->iftype;
2661
2662         result = nl80211_parse_chandef(rdev, info, &chandef);
2663         if (result)
2664                 return result;
2665
2666         switch (iftype) {
2667         case NL80211_IFTYPE_AP:
2668         case NL80211_IFTYPE_P2P_GO:
2669                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2670                                                    iftype)) {
2671                         result = -EINVAL;
2672                         break;
2673                 }
2674                 if (wdev->beacon_interval) {
2675                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2676                             !(rdev->wiphy.features &
2677                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2678                                 result = -EBUSY;
2679                                 break;
2680                         }
2681
2682                         /* Only allow dynamic channel width changes */
2683                         if (chandef.chan != wdev->preset_chandef.chan) {
2684                                 result = -EBUSY;
2685                                 break;
2686                         }
2687                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2688                         if (result)
2689                                 break;
2690                 }
2691                 wdev->preset_chandef = chandef;
2692                 result = 0;
2693                 break;
2694         case NL80211_IFTYPE_MESH_POINT:
2695                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2696                 break;
2697         case NL80211_IFTYPE_MONITOR:
2698                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2699                 break;
2700         default:
2701                 result = -EINVAL;
2702         }
2703
2704         return result;
2705 }
2706
2707 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2708 {
2709         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2710         struct net_device *netdev = info->user_ptr[1];
2711
2712         return __nl80211_set_channel(rdev, netdev, info);
2713 }
2714
2715 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2716 {
2717         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2718         struct net_device *dev = info->user_ptr[1];
2719         struct wireless_dev *wdev = dev->ieee80211_ptr;
2720         const u8 *bssid;
2721
2722         if (!info->attrs[NL80211_ATTR_MAC])
2723                 return -EINVAL;
2724
2725         if (netif_running(dev))
2726                 return -EBUSY;
2727
2728         if (!rdev->ops->set_wds_peer)
2729                 return -EOPNOTSUPP;
2730
2731         if (wdev->iftype != NL80211_IFTYPE_WDS)
2732                 return -EOPNOTSUPP;
2733
2734         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2735         return rdev_set_wds_peer(rdev, dev, bssid);
2736 }
2737
2738 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2739 {
2740         struct cfg80211_registered_device *rdev;
2741         struct net_device *netdev = NULL;
2742         struct wireless_dev *wdev;
2743         int result = 0, rem_txq_params = 0;
2744         struct nlattr *nl_txq_params;
2745         u32 changed;
2746         u8 retry_short = 0, retry_long = 0;
2747         u32 frag_threshold = 0, rts_threshold = 0;
2748         u8 coverage_class = 0;
2749         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2750
2751         ASSERT_RTNL();
2752
2753         /*
2754          * Try to find the wiphy and netdev. Normally this
2755          * function shouldn't need the netdev, but this is
2756          * done for backward compatibility -- previously
2757          * setting the channel was done per wiphy, but now
2758          * it is per netdev. Previous userland like hostapd
2759          * also passed a netdev to set_wiphy, so that it is
2760          * possible to let that go to the right netdev!
2761          */
2762
2763         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2764                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2765
2766                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2767                 if (netdev && netdev->ieee80211_ptr)
2768                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2769                 else
2770                         netdev = NULL;
2771         }
2772
2773         if (!netdev) {
2774                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2775                                                   info->attrs);
2776                 if (IS_ERR(rdev))
2777                         return PTR_ERR(rdev);
2778                 wdev = NULL;
2779                 netdev = NULL;
2780                 result = 0;
2781         } else
2782                 wdev = netdev->ieee80211_ptr;
2783
2784         /*
2785          * end workaround code, by now the rdev is available
2786          * and locked, and wdev may or may not be NULL.
2787          */
2788
2789         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2790                 result = cfg80211_dev_rename(
2791                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2792
2793         if (result)
2794                 return result;
2795
2796         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2797                 struct ieee80211_txq_params txq_params;
2798                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2799
2800                 if (!rdev->ops->set_txq_params)
2801                         return -EOPNOTSUPP;
2802
2803                 if (!netdev)
2804                         return -EINVAL;
2805
2806                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2807                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2808                         return -EINVAL;
2809
2810                 if (!netif_running(netdev))
2811                         return -ENETDOWN;
2812
2813                 nla_for_each_nested(nl_txq_params,
2814                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2815                                     rem_txq_params) {
2816                         result = nla_parse_nested_deprecated(tb,
2817                                                              NL80211_TXQ_ATTR_MAX,
2818                                                              nl_txq_params,
2819                                                              txq_params_policy,
2820                                                              info->extack);
2821                         if (result)
2822                                 return result;
2823                         result = parse_txq_params(tb, &txq_params);
2824                         if (result)
2825                                 return result;
2826
2827                         result = rdev_set_txq_params(rdev, netdev,
2828                                                      &txq_params);
2829                         if (result)
2830                                 return result;
2831                 }
2832         }
2833
2834         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2835                 result = __nl80211_set_channel(
2836                         rdev,
2837                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2838                         info);
2839                 if (result)
2840                         return result;
2841         }
2842
2843         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2844                 struct wireless_dev *txp_wdev = wdev;
2845                 enum nl80211_tx_power_setting type;
2846                 int idx, mbm = 0;
2847
2848                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2849                         txp_wdev = NULL;
2850
2851                 if (!rdev->ops->set_tx_power)
2852                         return -EOPNOTSUPP;
2853
2854                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2855                 type = nla_get_u32(info->attrs[idx]);
2856
2857                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2858                     (type != NL80211_TX_POWER_AUTOMATIC))
2859                         return -EINVAL;
2860
2861                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2862                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2863                         mbm = nla_get_u32(info->attrs[idx]);
2864                 }
2865
2866                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2867                 if (result)
2868                         return result;
2869         }
2870
2871         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2872             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2873                 u32 tx_ant, rx_ant;
2874
2875                 if ((!rdev->wiphy.available_antennas_tx &&
2876                      !rdev->wiphy.available_antennas_rx) ||
2877                     !rdev->ops->set_antenna)
2878                         return -EOPNOTSUPP;
2879
2880                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2881                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2882
2883                 /* reject antenna configurations which don't match the
2884                  * available antenna masks, except for the "all" mask */
2885                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2886                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2887                         return -EINVAL;
2888
2889                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2890                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2891
2892                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2893                 if (result)
2894                         return result;
2895         }
2896
2897         changed = 0;
2898
2899         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2900                 retry_short = nla_get_u8(
2901                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2902
2903                 changed |= WIPHY_PARAM_RETRY_SHORT;
2904         }
2905
2906         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2907                 retry_long = nla_get_u8(
2908                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2909
2910                 changed |= WIPHY_PARAM_RETRY_LONG;
2911         }
2912
2913         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2914                 frag_threshold = nla_get_u32(
2915                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2916                 if (frag_threshold < 256)
2917                         return -EINVAL;
2918
2919                 if (frag_threshold != (u32) -1) {
2920                         /*
2921                          * Fragments (apart from the last one) are required to
2922                          * have even length. Make the fragmentation code
2923                          * simpler by stripping LSB should someone try to use
2924                          * odd threshold value.
2925                          */
2926                         frag_threshold &= ~0x1;
2927                 }
2928                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2929         }
2930
2931         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2932                 rts_threshold = nla_get_u32(
2933                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2934                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2935         }
2936
2937         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2938                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2939                         return -EINVAL;
2940
2941                 coverage_class = nla_get_u8(
2942                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2943                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2944         }
2945
2946         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2947                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2948                         return -EOPNOTSUPP;
2949
2950                 changed |= WIPHY_PARAM_DYN_ACK;
2951         }
2952
2953         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
2954                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2955                                              NL80211_EXT_FEATURE_TXQS))
2956                         return -EOPNOTSUPP;
2957                 txq_limit = nla_get_u32(
2958                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
2959                 changed |= WIPHY_PARAM_TXQ_LIMIT;
2960         }
2961
2962         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
2963                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2964                                              NL80211_EXT_FEATURE_TXQS))
2965                         return -EOPNOTSUPP;
2966                 txq_memory_limit = nla_get_u32(
2967                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
2968                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
2969         }
2970
2971         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
2972                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
2973                                              NL80211_EXT_FEATURE_TXQS))
2974                         return -EOPNOTSUPP;
2975                 txq_quantum = nla_get_u32(
2976                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
2977                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
2978         }
2979
2980         if (changed) {
2981                 u8 old_retry_short, old_retry_long;
2982                 u32 old_frag_threshold, old_rts_threshold;
2983                 u8 old_coverage_class;
2984                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
2985
2986                 if (!rdev->ops->set_wiphy_params)
2987                         return -EOPNOTSUPP;
2988
2989                 old_retry_short = rdev->wiphy.retry_short;
2990                 old_retry_long = rdev->wiphy.retry_long;
2991                 old_frag_threshold = rdev->wiphy.frag_threshold;
2992                 old_rts_threshold = rdev->wiphy.rts_threshold;
2993                 old_coverage_class = rdev->wiphy.coverage_class;
2994                 old_txq_limit = rdev->wiphy.txq_limit;
2995                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
2996                 old_txq_quantum = rdev->wiphy.txq_quantum;
2997
2998                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2999                         rdev->wiphy.retry_short = retry_short;
3000                 if (changed & WIPHY_PARAM_RETRY_LONG)
3001                         rdev->wiphy.retry_long = retry_long;
3002                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3003                         rdev->wiphy.frag_threshold = frag_threshold;
3004                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3005                         rdev->wiphy.rts_threshold = rts_threshold;
3006                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3007                         rdev->wiphy.coverage_class = coverage_class;
3008                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3009                         rdev->wiphy.txq_limit = txq_limit;
3010                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3011                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3012                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3013                         rdev->wiphy.txq_quantum = txq_quantum;
3014
3015                 result = rdev_set_wiphy_params(rdev, changed);
3016                 if (result) {
3017                         rdev->wiphy.retry_short = old_retry_short;
3018                         rdev->wiphy.retry_long = old_retry_long;
3019                         rdev->wiphy.frag_threshold = old_frag_threshold;
3020                         rdev->wiphy.rts_threshold = old_rts_threshold;
3021                         rdev->wiphy.coverage_class = old_coverage_class;
3022                         rdev->wiphy.txq_limit = old_txq_limit;
3023                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3024                         rdev->wiphy.txq_quantum = old_txq_quantum;
3025                         return result;
3026                 }
3027         }
3028         return 0;
3029 }
3030
3031 static int nl80211_send_chandef(struct sk_buff *msg,
3032                                 const struct cfg80211_chan_def *chandef)
3033 {
3034         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3035                 return -EINVAL;
3036
3037         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3038                         chandef->chan->center_freq))
3039                 return -ENOBUFS;
3040         switch (chandef->width) {
3041         case NL80211_CHAN_WIDTH_20_NOHT:
3042         case NL80211_CHAN_WIDTH_20:
3043         case NL80211_CHAN_WIDTH_40:
3044                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3045                                 cfg80211_get_chandef_type(chandef)))
3046                         return -ENOBUFS;
3047                 break;
3048         default:
3049                 break;
3050         }
3051         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3052                 return -ENOBUFS;
3053         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3054                 return -ENOBUFS;
3055         if (chandef->center_freq2 &&
3056             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3057                 return -ENOBUFS;
3058         return 0;
3059 }
3060
3061 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3062                               struct cfg80211_registered_device *rdev,
3063                               struct wireless_dev *wdev,
3064                               enum nl80211_commands cmd)
3065 {
3066         struct net_device *dev = wdev->netdev;
3067         void *hdr;
3068
3069         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3070                 cmd != NL80211_CMD_DEL_INTERFACE &&
3071                 cmd != NL80211_CMD_SET_INTERFACE);
3072
3073         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3074         if (!hdr)
3075                 return -1;
3076
3077         if (dev &&
3078             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3079              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3080                 goto nla_put_failure;
3081
3082         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3083             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3084             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3085                               NL80211_ATTR_PAD) ||
3086             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3087             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3088                         rdev->devlist_generation ^
3089                         (cfg80211_rdev_list_generation << 2)) ||
3090             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3091                 goto nla_put_failure;
3092
3093         if (rdev->ops->get_channel) {
3094                 int ret;
3095                 struct cfg80211_chan_def chandef;
3096
3097                 ret = rdev_get_channel(rdev, wdev, &chandef);
3098                 if (ret == 0) {
3099                         if (nl80211_send_chandef(msg, &chandef))
3100                                 goto nla_put_failure;
3101                 }
3102         }
3103
3104         if (rdev->ops->get_tx_power) {
3105                 int dbm, ret;
3106
3107                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3108                 if (ret == 0 &&
3109                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3110                                 DBM_TO_MBM(dbm)))
3111                         goto nla_put_failure;
3112         }
3113
3114         wdev_lock(wdev);
3115         switch (wdev->iftype) {
3116         case NL80211_IFTYPE_AP:
3117                 if (wdev->ssid_len &&
3118                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3119                         goto nla_put_failure_locked;
3120                 break;
3121         case NL80211_IFTYPE_STATION:
3122         case NL80211_IFTYPE_P2P_CLIENT:
3123         case NL80211_IFTYPE_ADHOC: {
3124                 const u8 *ssid_ie;
3125                 if (!wdev->current_bss)
3126                         break;
3127                 rcu_read_lock();
3128                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3129                                                WLAN_EID_SSID);
3130                 if (ssid_ie &&
3131                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3132                         goto nla_put_failure_rcu_locked;
3133                 rcu_read_unlock();
3134                 break;
3135                 }
3136         default:
3137                 /* nothing */
3138                 break;
3139         }
3140         wdev_unlock(wdev);
3141
3142         if (rdev->ops->get_txq_stats) {
3143                 struct cfg80211_txq_stats txqstats = {};
3144                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3145
3146                 if (ret == 0 &&
3147                     !nl80211_put_txq_stats(msg, &txqstats,
3148                                            NL80211_ATTR_TXQ_STATS))
3149                         goto nla_put_failure;
3150         }
3151
3152         genlmsg_end(msg, hdr);
3153         return 0;
3154
3155  nla_put_failure_rcu_locked:
3156         rcu_read_unlock();
3157  nla_put_failure_locked:
3158         wdev_unlock(wdev);
3159  nla_put_failure:
3160         genlmsg_cancel(msg, hdr);
3161         return -EMSGSIZE;
3162 }
3163
3164 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3165 {
3166         int wp_idx = 0;
3167         int if_idx = 0;
3168         int wp_start = cb->args[0];
3169         int if_start = cb->args[1];
3170         int filter_wiphy = -1;
3171         struct cfg80211_registered_device *rdev;
3172         struct wireless_dev *wdev;
3173         int ret;
3174
3175         rtnl_lock();
3176         if (!cb->args[2]) {
3177                 struct nl80211_dump_wiphy_state state = {
3178                         .filter_wiphy = -1,
3179                 };
3180
3181                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3182                 if (ret)
3183                         goto out_unlock;
3184
3185                 filter_wiphy = state.filter_wiphy;
3186
3187                 /*
3188                  * if filtering, set cb->args[2] to +1 since 0 is the default
3189                  * value needed to determine that parsing is necessary.
3190                  */
3191                 if (filter_wiphy >= 0)
3192                         cb->args[2] = filter_wiphy + 1;
3193                 else
3194                         cb->args[2] = -1;
3195         } else if (cb->args[2] > 0) {
3196                 filter_wiphy = cb->args[2] - 1;
3197         }
3198
3199         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3200                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3201                         continue;
3202                 if (wp_idx < wp_start) {
3203                         wp_idx++;
3204                         continue;
3205                 }
3206
3207                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3208                         continue;
3209
3210                 if_idx = 0;
3211
3212                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3213                         if (if_idx < if_start) {
3214                                 if_idx++;
3215                                 continue;
3216                         }
3217                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3218                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3219                                                rdev, wdev,
3220                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3221                                 goto out;
3222                         }
3223                         if_idx++;
3224                 }
3225
3226                 wp_idx++;
3227         }
3228  out:
3229         cb->args[0] = wp_idx;
3230         cb->args[1] = if_idx;
3231
3232         ret = skb->len;
3233  out_unlock:
3234         rtnl_unlock();
3235
3236         return ret;
3237 }
3238
3239 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3240 {
3241         struct sk_buff *msg;
3242         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3243         struct wireless_dev *wdev = info->user_ptr[1];
3244
3245         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3246         if (!msg)
3247                 return -ENOMEM;
3248
3249         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3250                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3251                 nlmsg_free(msg);
3252                 return -ENOBUFS;
3253         }
3254
3255         return genlmsg_reply(msg, info);
3256 }
3257
3258 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3259         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3260         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3261         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3262         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3263         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3264         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3265 };
3266
3267 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3268 {
3269         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3270         int flag;
3271
3272         *mntrflags = 0;
3273
3274         if (!nla)
3275                 return -EINVAL;
3276
3277         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3278                 return -EINVAL;
3279
3280         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3281                 if (flags[flag])
3282                         *mntrflags |= (1<<flag);
3283
3284         *mntrflags |= MONITOR_FLAG_CHANGED;
3285
3286         return 0;
3287 }
3288
3289 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3290                                      enum nl80211_iftype type,
3291                                      struct genl_info *info,
3292                                      struct vif_params *params)
3293 {
3294         bool change = false;
3295         int err;
3296
3297         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3298                 if (type != NL80211_IFTYPE_MONITOR)
3299                         return -EINVAL;
3300
3301                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3302                                           &params->flags);
3303                 if (err)
3304                         return err;
3305
3306                 change = true;
3307         }
3308
3309         if (params->flags & MONITOR_FLAG_ACTIVE &&
3310             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3311                 return -EOPNOTSUPP;
3312
3313         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3314                 const u8 *mumimo_groups;
3315                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3316
3317                 if (type != NL80211_IFTYPE_MONITOR)
3318                         return -EINVAL;
3319
3320                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3321                         return -EOPNOTSUPP;
3322
3323                 mumimo_groups =
3324                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3325
3326                 /* bits 0 and 63 are reserved and must be zero */
3327                 if ((mumimo_groups[0] & BIT(0)) ||
3328                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3329                         return -EINVAL;
3330
3331                 params->vht_mumimo_groups = mumimo_groups;
3332                 change = true;
3333         }
3334
3335         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3336                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3337
3338                 if (type != NL80211_IFTYPE_MONITOR)
3339                         return -EINVAL;
3340
3341                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3342                         return -EOPNOTSUPP;
3343
3344                 params->vht_mumimo_follow_addr =
3345                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3346                 change = true;
3347         }
3348
3349         return change ? 1 : 0;
3350 }
3351
3352 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3353                                struct net_device *netdev, u8 use_4addr,
3354                                enum nl80211_iftype iftype)
3355 {
3356         if (!use_4addr) {
3357                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3358                         return -EBUSY;
3359                 return 0;
3360         }
3361
3362         switch (iftype) {
3363         case NL80211_IFTYPE_AP_VLAN:
3364                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3365                         return 0;
3366                 break;
3367         case NL80211_IFTYPE_STATION:
3368                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3369                         return 0;
3370                 break;
3371         default:
3372                 break;
3373         }
3374
3375         return -EOPNOTSUPP;
3376 }
3377
3378 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3379 {
3380         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3381         struct vif_params params;
3382         int err;
3383         enum nl80211_iftype otype, ntype;
3384         struct net_device *dev = info->user_ptr[1];
3385         bool change = false;
3386
3387         memset(&params, 0, sizeof(params));
3388
3389         otype = ntype = dev->ieee80211_ptr->iftype;
3390
3391         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3392                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3393                 if (otype != ntype)
3394                         change = true;
3395         }
3396
3397         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3398                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3399
3400                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3401                         return -EINVAL;
3402                 if (netif_running(dev))
3403                         return -EBUSY;
3404
3405                 wdev_lock(wdev);
3406                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3407                              IEEE80211_MAX_MESH_ID_LEN);
3408                 wdev->mesh_id_up_len =
3409                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3410                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3411                        wdev->mesh_id_up_len);
3412                 wdev_unlock(wdev);
3413         }
3414
3415         if (info->attrs[NL80211_ATTR_4ADDR]) {
3416                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3417                 change = true;
3418                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3419                 if (err)
3420                         return err;
3421         } else {
3422                 params.use_4addr = -1;
3423         }
3424
3425         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3426         if (err < 0)
3427                 return err;
3428         if (err > 0)
3429                 change = true;
3430
3431         if (change)
3432                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3433         else
3434                 err = 0;
3435
3436         if (!err && params.use_4addr != -1)
3437                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3438
3439         if (change && !err) {
3440                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3441
3442                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3443         }
3444
3445         return err;
3446 }
3447
3448 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3449 {
3450         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3451         struct vif_params params;
3452         struct wireless_dev *wdev;
3453         struct sk_buff *msg;
3454         int err;
3455         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3456
3457         /* to avoid failing a new interface creation due to pending removal */
3458         cfg80211_destroy_ifaces(rdev);
3459
3460         memset(&params, 0, sizeof(params));
3461
3462         if (!info->attrs[NL80211_ATTR_IFNAME])
3463                 return -EINVAL;
3464
3465         if (info->attrs[NL80211_ATTR_IFTYPE])
3466                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3467
3468         if (!rdev->ops->add_virtual_intf)
3469                 return -EOPNOTSUPP;
3470
3471         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3472              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3473             info->attrs[NL80211_ATTR_MAC]) {
3474                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3475                            ETH_ALEN);
3476                 if (!is_valid_ether_addr(params.macaddr))
3477                         return -EADDRNOTAVAIL;
3478         }
3479
3480         if (info->attrs[NL80211_ATTR_4ADDR]) {
3481                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3482                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3483                 if (err)
3484                         return err;
3485         }
3486
3487         if (!(rdev->wiphy.interface_modes & (1 << type)) &&
3488             !(type == NL80211_IFTYPE_AP_VLAN && params.use_4addr &&
3489               rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP))
3490                 return -EOPNOTSUPP;
3491
3492         err = nl80211_parse_mon_options(rdev, type, info, &params);
3493         if (err < 0)
3494                 return err;
3495
3496         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3497         if (!msg)
3498                 return -ENOMEM;
3499
3500         wdev = rdev_add_virtual_intf(rdev,
3501                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3502                                 NET_NAME_USER, type, &params);
3503         if (WARN_ON(!wdev)) {
3504                 nlmsg_free(msg);
3505                 return -EPROTO;
3506         } else if (IS_ERR(wdev)) {
3507                 nlmsg_free(msg);
3508                 return PTR_ERR(wdev);
3509         }
3510
3511         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3512                 wdev->owner_nlportid = info->snd_portid;
3513
3514         switch (type) {
3515         case NL80211_IFTYPE_MESH_POINT:
3516                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3517                         break;
3518                 wdev_lock(wdev);
3519                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3520                              IEEE80211_MAX_MESH_ID_LEN);
3521                 wdev->mesh_id_up_len =
3522                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3523                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3524                        wdev->mesh_id_up_len);
3525                 wdev_unlock(wdev);
3526                 break;
3527         case NL80211_IFTYPE_NAN:
3528         case NL80211_IFTYPE_P2P_DEVICE:
3529                 /*
3530                  * P2P Device and NAN do not have a netdev, so don't go
3531                  * through the netdev notifier and must be added here
3532                  */
3533                 cfg80211_init_wdev(rdev, wdev);
3534                 break;
3535         default:
3536                 break;
3537         }
3538
3539         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3540                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3541                 nlmsg_free(msg);
3542                 return -ENOBUFS;
3543         }
3544
3545         return genlmsg_reply(msg, info);
3546 }
3547
3548 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3549 {
3550         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3551         struct wireless_dev *wdev = info->user_ptr[1];
3552
3553         if (!rdev->ops->del_virtual_intf)
3554                 return -EOPNOTSUPP;
3555
3556         /*
3557          * If we remove a wireless device without a netdev then clear
3558          * user_ptr[1] so that nl80211_post_doit won't dereference it
3559          * to check if it needs to do dev_put(). Otherwise it crashes
3560          * since the wdev has been freed, unlike with a netdev where
3561          * we need the dev_put() for the netdev to really be freed.
3562          */
3563         if (!wdev->netdev)
3564                 info->user_ptr[1] = NULL;
3565
3566         return rdev_del_virtual_intf(rdev, wdev);
3567 }
3568
3569 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3570 {
3571         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3572         struct net_device *dev = info->user_ptr[1];
3573         u16 noack_map;
3574
3575         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3576                 return -EINVAL;
3577
3578         if (!rdev->ops->set_noack_map)
3579                 return -EOPNOTSUPP;
3580
3581         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3582
3583         return rdev_set_noack_map(rdev, dev, noack_map);
3584 }
3585
3586 struct get_key_cookie {
3587         struct sk_buff *msg;
3588         int error;
3589         int idx;
3590 };
3591
3592 static void get_key_callback(void *c, struct key_params *params)
3593 {
3594         struct nlattr *key;
3595         struct get_key_cookie *cookie = c;
3596
3597         if ((params->key &&
3598              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3599                      params->key_len, params->key)) ||
3600             (params->seq &&
3601              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3602                      params->seq_len, params->seq)) ||
3603             (params->cipher &&
3604              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3605                          params->cipher)))
3606                 goto nla_put_failure;
3607
3608         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3609         if (!key)
3610                 goto nla_put_failure;
3611
3612         if ((params->key &&
3613              nla_put(cookie->msg, NL80211_KEY_DATA,
3614                      params->key_len, params->key)) ||
3615             (params->seq &&
3616              nla_put(cookie->msg, NL80211_KEY_SEQ,
3617                      params->seq_len, params->seq)) ||
3618             (params->cipher &&
3619              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3620                          params->cipher)))
3621                 goto nla_put_failure;
3622
3623         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3624                 goto nla_put_failure;
3625
3626         nla_nest_end(cookie->msg, key);
3627
3628         return;
3629  nla_put_failure:
3630         cookie->error = 1;
3631 }
3632
3633 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3634 {
3635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3636         int err;
3637         struct net_device *dev = info->user_ptr[1];
3638         u8 key_idx = 0;
3639         const u8 *mac_addr = NULL;
3640         bool pairwise;
3641         struct get_key_cookie cookie = {
3642                 .error = 0,
3643         };
3644         void *hdr;
3645         struct sk_buff *msg;
3646
3647         if (info->attrs[NL80211_ATTR_KEY_IDX])
3648                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3649
3650         if (info->attrs[NL80211_ATTR_MAC])
3651                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3652
3653         pairwise = !!mac_addr;
3654         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3655                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3656
3657                 if (kt != NL80211_KEYTYPE_GROUP &&
3658                     kt != NL80211_KEYTYPE_PAIRWISE)
3659                         return -EINVAL;
3660                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3661         }
3662
3663         if (!rdev->ops->get_key)
3664                 return -EOPNOTSUPP;
3665
3666         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3667                 return -ENOENT;
3668
3669         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3670         if (!msg)
3671                 return -ENOMEM;
3672
3673         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3674                              NL80211_CMD_NEW_KEY);
3675         if (!hdr)
3676                 goto nla_put_failure;
3677
3678         cookie.msg = msg;
3679         cookie.idx = key_idx;
3680
3681         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3682             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3683                 goto nla_put_failure;
3684         if (mac_addr &&
3685             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3686                 goto nla_put_failure;
3687
3688         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3689                            get_key_callback);
3690
3691         if (err)
3692                 goto free_msg;
3693
3694         if (cookie.error)
3695                 goto nla_put_failure;
3696
3697         genlmsg_end(msg, hdr);
3698         return genlmsg_reply(msg, info);
3699
3700  nla_put_failure:
3701         err = -ENOBUFS;
3702  free_msg:
3703         nlmsg_free(msg);
3704         return err;
3705 }
3706
3707 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3708 {
3709         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3710         struct key_parse key;
3711         int err;
3712         struct net_device *dev = info->user_ptr[1];
3713
3714         err = nl80211_parse_key(info, &key);
3715         if (err)
3716                 return err;
3717
3718         if (key.idx < 0)
3719                 return -EINVAL;
3720
3721         /* Only support setting default key and
3722          * Extended Key ID action NL80211_KEY_SET_TX.
3723          */
3724         if (!key.def && !key.defmgmt &&
3725             !(key.p.mode == NL80211_KEY_SET_TX))
3726                 return -EINVAL;
3727
3728         wdev_lock(dev->ieee80211_ptr);
3729
3730         if (key.def) {
3731                 if (!rdev->ops->set_default_key) {
3732                         err = -EOPNOTSUPP;
3733                         goto out;
3734                 }
3735
3736                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3737                 if (err)
3738                         goto out;
3739
3740                 err = rdev_set_default_key(rdev, dev, key.idx,
3741                                                  key.def_uni, key.def_multi);
3742
3743                 if (err)
3744                         goto out;
3745
3746 #ifdef CONFIG_CFG80211_WEXT
3747                 dev->ieee80211_ptr->wext.default_key = key.idx;
3748 #endif
3749         } else if (key.defmgmt) {
3750                 if (key.def_uni || !key.def_multi) {
3751                         err = -EINVAL;
3752                         goto out;
3753                 }
3754
3755                 if (!rdev->ops->set_default_mgmt_key) {
3756                         err = -EOPNOTSUPP;
3757                         goto out;
3758                 }
3759
3760                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3761                 if (err)
3762                         goto out;
3763
3764                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3765                 if (err)
3766                         goto out;
3767
3768 #ifdef CONFIG_CFG80211_WEXT
3769                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3770 #endif
3771         } else if (key.p.mode == NL80211_KEY_SET_TX &&
3772                    wiphy_ext_feature_isset(&rdev->wiphy,
3773                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
3774                 u8 *mac_addr = NULL;
3775
3776                 if (info->attrs[NL80211_ATTR_MAC])
3777                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3778
3779                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
3780                         err = -EINVAL;
3781                         goto out;
3782                 }
3783
3784                 err = rdev_add_key(rdev, dev, key.idx,
3785                                    NL80211_KEYTYPE_PAIRWISE,
3786                                    mac_addr, &key.p);
3787         } else {
3788                 err = -EINVAL;
3789         }
3790  out:
3791         wdev_unlock(dev->ieee80211_ptr);
3792
3793         return err;
3794 }
3795
3796 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3797 {
3798         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3799         int err;
3800         struct net_device *dev = info->user_ptr[1];
3801         struct key_parse key;
3802         const u8 *mac_addr = NULL;
3803
3804         err = nl80211_parse_key(info, &key);
3805         if (err)
3806                 return err;
3807
3808         if (!key.p.key)
3809                 return -EINVAL;
3810
3811         if (info->attrs[NL80211_ATTR_MAC])
3812                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3813
3814         if (key.type == -1) {
3815                 if (mac_addr)
3816                         key.type = NL80211_KEYTYPE_PAIRWISE;
3817                 else
3818                         key.type = NL80211_KEYTYPE_GROUP;
3819         }
3820
3821         /* for now */
3822         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3823             key.type != NL80211_KEYTYPE_GROUP)
3824                 return -EINVAL;
3825
3826         if (!rdev->ops->add_key)
3827                 return -EOPNOTSUPP;
3828
3829         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3830                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3831                                            mac_addr))
3832                 return -EINVAL;
3833
3834         wdev_lock(dev->ieee80211_ptr);
3835         err = nl80211_key_allowed(dev->ieee80211_ptr);
3836         if (!err)
3837                 err = rdev_add_key(rdev, dev, key.idx,
3838                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3839                                     mac_addr, &key.p);
3840         wdev_unlock(dev->ieee80211_ptr);
3841
3842         return err;
3843 }
3844
3845 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3846 {
3847         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3848         int err;
3849         struct net_device *dev = info->user_ptr[1];
3850         u8 *mac_addr = NULL;
3851         struct key_parse key;
3852
3853         err = nl80211_parse_key(info, &key);
3854         if (err)
3855                 return err;
3856
3857         if (info->attrs[NL80211_ATTR_MAC])
3858                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3859
3860         if (key.type == -1) {
3861                 if (mac_addr)
3862                         key.type = NL80211_KEYTYPE_PAIRWISE;
3863                 else
3864                         key.type = NL80211_KEYTYPE_GROUP;
3865         }
3866
3867         /* for now */
3868         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3869             key.type != NL80211_KEYTYPE_GROUP)
3870                 return -EINVAL;
3871
3872         if (!rdev->ops->del_key)
3873                 return -EOPNOTSUPP;
3874
3875         wdev_lock(dev->ieee80211_ptr);
3876         err = nl80211_key_allowed(dev->ieee80211_ptr);
3877
3878         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3879             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3880                 err = -ENOENT;
3881
3882         if (!err)
3883                 err = rdev_del_key(rdev, dev, key.idx,
3884                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3885                                    mac_addr);
3886
3887 #ifdef CONFIG_CFG80211_WEXT
3888         if (!err) {
3889                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3890                         dev->ieee80211_ptr->wext.default_key = -1;
3891                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3892                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3893         }
3894 #endif
3895         wdev_unlock(dev->ieee80211_ptr);
3896
3897         return err;
3898 }
3899
3900 /* This function returns an error or the number of nested attributes */
3901 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3902 {
3903         struct nlattr *attr;
3904         int n_entries = 0, tmp;
3905
3906         nla_for_each_nested(attr, nl_attr, tmp) {
3907                 if (nla_len(attr) != ETH_ALEN)
3908                         return -EINVAL;
3909
3910                 n_entries++;
3911         }
3912
3913         return n_entries;
3914 }
3915
3916 /*
3917  * This function parses ACL information and allocates memory for ACL data.
3918  * On successful return, the calling function is responsible to free the
3919  * ACL buffer returned by this function.
3920  */
3921 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3922                                                 struct genl_info *info)
3923 {
3924         enum nl80211_acl_policy acl_policy;
3925         struct nlattr *attr;
3926         struct cfg80211_acl_data *acl;
3927         int i = 0, n_entries, tmp;
3928
3929         if (!wiphy->max_acl_mac_addrs)
3930                 return ERR_PTR(-EOPNOTSUPP);
3931
3932         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3933                 return ERR_PTR(-EINVAL);
3934
3935         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3936         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3937             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3938                 return ERR_PTR(-EINVAL);
3939
3940         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3941                 return ERR_PTR(-EINVAL);
3942
3943         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3944         if (n_entries < 0)
3945                 return ERR_PTR(n_entries);
3946
3947         if (n_entries > wiphy->max_acl_mac_addrs)
3948                 return ERR_PTR(-ENOTSUPP);
3949
3950         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
3951         if (!acl)
3952                 return ERR_PTR(-ENOMEM);
3953
3954         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3955                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3956                 i++;
3957         }
3958
3959         acl->n_acl_entries = n_entries;
3960         acl->acl_policy = acl_policy;
3961
3962         return acl;
3963 }
3964
3965 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3966 {
3967         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3968         struct net_device *dev = info->user_ptr[1];
3969         struct cfg80211_acl_data *acl;
3970         int err;
3971
3972         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3973             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3974                 return -EOPNOTSUPP;
3975
3976         if (!dev->ieee80211_ptr->beacon_interval)
3977                 return -EINVAL;
3978
3979         acl = parse_acl_data(&rdev->wiphy, info);
3980         if (IS_ERR(acl))
3981                 return PTR_ERR(acl);
3982
3983         err = rdev_set_mac_acl(rdev, dev, acl);
3984
3985         kfree(acl);
3986
3987         return err;
3988 }
3989
3990 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3991                            u8 *rates, u8 rates_len)
3992 {
3993         u8 i;
3994         u32 mask = 0;
3995
3996         for (i = 0; i < rates_len; i++) {
3997                 int rate = (rates[i] & 0x7f) * 5;
3998                 int ridx;
3999
4000                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4001                         struct ieee80211_rate *srate =
4002                                 &sband->bitrates[ridx];
4003                         if (rate == srate->bitrate) {
4004                                 mask |= 1 << ridx;
4005                                 break;
4006                         }
4007                 }
4008                 if (ridx == sband->n_bitrates)
4009                         return 0; /* rate not found */
4010         }
4011
4012         return mask;
4013 }
4014
4015 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4016                                u8 *rates, u8 rates_len,
4017                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4018 {
4019         u8 i;
4020
4021         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4022
4023         for (i = 0; i < rates_len; i++) {
4024                 int ridx, rbit;
4025
4026                 ridx = rates[i] / 8;
4027                 rbit = BIT(rates[i] % 8);
4028
4029                 /* check validity */
4030                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4031                         return false;
4032
4033                 /* check availability */
4034                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4035                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4036                         mcs[ridx] |= rbit;
4037                 else
4038                         return false;
4039         }
4040
4041         return true;
4042 }
4043
4044 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4045 {
4046         u16 mcs_mask = 0;
4047
4048         switch (vht_mcs_map) {
4049         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4050                 break;
4051         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4052                 mcs_mask = 0x00FF;
4053                 break;
4054         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4055                 mcs_mask = 0x01FF;
4056                 break;
4057         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4058                 mcs_mask = 0x03FF;
4059                 break;
4060         default:
4061                 break;
4062         }
4063
4064         return mcs_mask;
4065 }
4066
4067 static void vht_build_mcs_mask(u16 vht_mcs_map,
4068                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4069 {
4070         u8 nss;
4071
4072         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4073                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4074                 vht_mcs_map >>= 2;
4075         }
4076 }
4077
4078 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4079                              struct nl80211_txrate_vht *txrate,
4080                              u16 mcs[NL80211_VHT_NSS_MAX])
4081 {
4082         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4083         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4084         u8 i;
4085
4086         if (!sband->vht_cap.vht_supported)
4087                 return false;
4088
4089         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4090
4091         /* Build vht_mcs_mask from VHT capabilities */
4092         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4093
4094         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4095                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4096                         mcs[i] = txrate->mcs[i];
4097                 else
4098                         return false;
4099         }
4100
4101         return true;
4102 }
4103
4104 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4105         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4106                                     .len = NL80211_MAX_SUPP_RATES },
4107         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4108                                 .len = NL80211_MAX_SUPP_HT_RATES },
4109         [NL80211_TXRATE_VHT] = {
4110                 .type = NLA_EXACT_LEN_WARN,
4111                 .len = sizeof(struct nl80211_txrate_vht),
4112         },
4113         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4114 };
4115
4116 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4117                                          struct cfg80211_bitrate_mask *mask)
4118 {
4119         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4120         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4121         int rem, i;
4122         struct nlattr *tx_rates;
4123         struct ieee80211_supported_band *sband;
4124         u16 vht_tx_mcs_map;
4125
4126         memset(mask, 0, sizeof(*mask));
4127         /* Default to all rates enabled */
4128         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4129                 sband = rdev->wiphy.bands[i];
4130
4131                 if (!sband)
4132                         continue;
4133
4134                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4135                 memcpy(mask->control[i].ht_mcs,
4136                        sband->ht_cap.mcs.rx_mask,
4137                        sizeof(mask->control[i].ht_mcs));
4138
4139                 if (!sband->vht_cap.vht_supported)
4140                         continue;
4141
4142                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4143                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4144         }
4145
4146         /* if no rates are given set it back to the defaults */
4147         if (!info->attrs[NL80211_ATTR_TX_RATES])
4148                 goto out;
4149
4150         /* The nested attribute uses enum nl80211_band as the index. This maps
4151          * directly to the enum nl80211_band values used in cfg80211.
4152          */
4153         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4154         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4155                 enum nl80211_band band = nla_type(tx_rates);
4156                 int err;
4157
4158                 if (band < 0 || band >= NUM_NL80211_BANDS)
4159                         return -EINVAL;
4160                 sband = rdev->wiphy.bands[band];
4161                 if (sband == NULL)
4162                         return -EINVAL;
4163                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4164                                                   tx_rates,
4165                                                   nl80211_txattr_policy,
4166                                                   info->extack);
4167                 if (err)
4168                         return err;
4169                 if (tb[NL80211_TXRATE_LEGACY]) {
4170                         mask->control[band].legacy = rateset_to_mask(
4171                                 sband,
4172                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4173                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4174                         if ((mask->control[band].legacy == 0) &&
4175                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4176                                 return -EINVAL;
4177                 }
4178                 if (tb[NL80211_TXRATE_HT]) {
4179                         if (!ht_rateset_to_mask(
4180                                         sband,
4181                                         nla_data(tb[NL80211_TXRATE_HT]),
4182                                         nla_len(tb[NL80211_TXRATE_HT]),
4183                                         mask->control[band].ht_mcs))
4184                                 return -EINVAL;
4185                 }
4186                 if (tb[NL80211_TXRATE_VHT]) {
4187                         if (!vht_set_mcs_mask(
4188                                         sband,
4189                                         nla_data(tb[NL80211_TXRATE_VHT]),
4190                                         mask->control[band].vht_mcs))
4191                                 return -EINVAL;
4192                 }
4193                 if (tb[NL80211_TXRATE_GI]) {
4194                         mask->control[band].gi =
4195                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4196                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4197                                 return -EINVAL;
4198                 }
4199
4200                 if (mask->control[band].legacy == 0) {
4201                         /* don't allow empty legacy rates if HT or VHT
4202                          * are not even supported.
4203                          */
4204                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4205                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4206                                 return -EINVAL;
4207
4208                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4209                                 if (mask->control[band].ht_mcs[i])
4210                                         goto out;
4211
4212                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4213                                 if (mask->control[band].vht_mcs[i])
4214                                         goto out;
4215
4216                         /* legacy and mcs rates may not be both empty */
4217                         return -EINVAL;
4218                 }
4219         }
4220
4221 out:
4222         return 0;
4223 }
4224
4225 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4226                                    enum nl80211_band band,
4227                                    struct cfg80211_bitrate_mask *beacon_rate)
4228 {
4229         u32 count_ht, count_vht, i;
4230         u32 rate = beacon_rate->control[band].legacy;
4231
4232         /* Allow only one rate */
4233         if (hweight32(rate) > 1)
4234                 return -EINVAL;
4235
4236         count_ht = 0;
4237         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4238                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4239                         return -EINVAL;
4240                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4241                         count_ht++;
4242                         if (count_ht > 1)
4243                                 return -EINVAL;
4244                 }
4245                 if (count_ht && rate)
4246                         return -EINVAL;
4247         }
4248
4249         count_vht = 0;
4250         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4251                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4252                         return -EINVAL;
4253                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4254                         count_vht++;
4255                         if (count_vht > 1)
4256                                 return -EINVAL;
4257                 }
4258                 if (count_vht && rate)
4259                         return -EINVAL;
4260         }
4261
4262         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4263                 return -EINVAL;
4264
4265         if (rate &&
4266             !wiphy_ext_feature_isset(&rdev->wiphy,
4267                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4268                 return -EINVAL;
4269         if (count_ht &&
4270             !wiphy_ext_feature_isset(&rdev->wiphy,
4271                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4272                 return -EINVAL;
4273         if (count_vht &&
4274             !wiphy_ext_feature_isset(&rdev->wiphy,
4275                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4276                 return -EINVAL;
4277
4278         return 0;
4279 }
4280
4281 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4282                                 struct nlattr *attrs[],
4283                                 struct cfg80211_beacon_data *bcn)
4284 {
4285         bool haveinfo = false;
4286         int err;
4287
4288         memset(bcn, 0, sizeof(*bcn));
4289
4290         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4291                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4292                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4293                 if (!bcn->head_len)
4294                         return -EINVAL;
4295                 haveinfo = true;
4296         }
4297
4298         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4299                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4300                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4301                 haveinfo = true;
4302         }
4303
4304         if (!haveinfo)
4305                 return -EINVAL;
4306
4307         if (attrs[NL80211_ATTR_IE]) {
4308                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4309                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4310         }
4311
4312         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4313                 bcn->proberesp_ies =
4314                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4315                 bcn->proberesp_ies_len =
4316                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4317         }
4318
4319         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4320                 bcn->assocresp_ies =
4321                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4322                 bcn->assocresp_ies_len =
4323                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4324         }
4325
4326         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4327                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4328                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4329         }
4330
4331         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4332                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4333
4334                 err = nla_parse_nested_deprecated(tb,
4335                                                   NL80211_FTM_RESP_ATTR_MAX,
4336                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4337                                                   NULL, NULL);
4338                 if (err)
4339                         return err;
4340
4341                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4342                     wiphy_ext_feature_isset(&rdev->wiphy,
4343                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4344                         bcn->ftm_responder = 1;
4345                 else
4346                         return -EOPNOTSUPP;
4347
4348                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4349                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4350                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4351                 }
4352
4353                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4354                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4355                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4356                 }
4357         } else {
4358                 bcn->ftm_responder = -1;
4359         }
4360
4361         return 0;
4362 }
4363
4364 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4365                                             const u8 *rates)
4366 {
4367         int i;
4368
4369         if (!rates)
4370                 return;
4371
4372         for (i = 0; i < rates[1]; i++) {
4373                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4374                         params->ht_required = true;
4375                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4376                         params->vht_required = true;
4377         }
4378 }
4379
4380 /*
4381  * Since the nl80211 API didn't include, from the beginning, attributes about
4382  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4383  * benefit of drivers that rebuild IEs in the firmware.
4384  */
4385 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4386 {
4387         const struct cfg80211_beacon_data *bcn = &params->beacon;
4388         size_t ies_len = bcn->tail_len;
4389         const u8 *ies = bcn->tail;
4390         const u8 *rates;
4391         const u8 *cap;
4392
4393         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4394         nl80211_check_ap_rate_selectors(params, rates);
4395
4396         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4397         nl80211_check_ap_rate_selectors(params, rates);
4398
4399         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4400         if (cap && cap[1] >= sizeof(*params->ht_cap))
4401                 params->ht_cap = (void *)(cap + 2);
4402         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4403         if (cap && cap[1] >= sizeof(*params->vht_cap))
4404                 params->vht_cap = (void *)(cap + 2);
4405         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4406         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4407                 params->he_cap = (void *)(cap + 3);
4408 }
4409
4410 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4411                                    struct cfg80211_ap_settings *params)
4412 {
4413         struct wireless_dev *wdev;
4414         bool ret = false;
4415
4416         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4417                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4418                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4419                         continue;
4420
4421                 if (!wdev->preset_chandef.chan)
4422                         continue;
4423
4424                 params->chandef = wdev->preset_chandef;
4425                 ret = true;
4426                 break;
4427         }
4428
4429         return ret;
4430 }
4431
4432 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4433                                     enum nl80211_auth_type auth_type,
4434                                     enum nl80211_commands cmd)
4435 {
4436         if (auth_type > NL80211_AUTHTYPE_MAX)
4437                 return false;
4438
4439         switch (cmd) {
4440         case NL80211_CMD_AUTHENTICATE:
4441                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4442                     auth_type == NL80211_AUTHTYPE_SAE)
4443                         return false;
4444                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4445                                              NL80211_EXT_FEATURE_FILS_STA) &&
4446                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4447                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4448                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4449                         return false;
4450                 return true;
4451         case NL80211_CMD_CONNECT:
4452                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4453                     !wiphy_ext_feature_isset(&rdev->wiphy,
4454                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4455                     auth_type == NL80211_AUTHTYPE_SAE)
4456                         return false;
4457
4458                 /* FILS with SK PFS or PK not supported yet */
4459                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4460                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4461                         return false;
4462                 if (!wiphy_ext_feature_isset(
4463                             &rdev->wiphy,
4464                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4465                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4466                         return false;
4467                 return true;
4468         case NL80211_CMD_START_AP:
4469                 /* SAE not supported yet */
4470                 if (auth_type == NL80211_AUTHTYPE_SAE)
4471                         return false;
4472                 /* FILS not supported yet */
4473                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4474                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4475                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4476                         return false;
4477                 return true;
4478         default:
4479                 return false;
4480         }
4481 }
4482
4483 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4484 {
4485         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4486         struct net_device *dev = info->user_ptr[1];
4487         struct wireless_dev *wdev = dev->ieee80211_ptr;
4488         struct cfg80211_ap_settings params;
4489         int err;
4490
4491         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4492             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4493                 return -EOPNOTSUPP;
4494
4495         if (!rdev->ops->start_ap)
4496                 return -EOPNOTSUPP;
4497
4498         if (wdev->beacon_interval)
4499                 return -EALREADY;
4500
4501         memset(&params, 0, sizeof(params));
4502
4503         /* these are required for START_AP */
4504         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4505             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4506             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4507                 return -EINVAL;
4508
4509         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4510         if (err)
4511                 return err;
4512
4513         params.beacon_interval =
4514                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4515         params.dtim_period =
4516                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4517
4518         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4519                                            params.beacon_interval);
4520         if (err)
4521                 return err;
4522
4523         /*
4524          * In theory, some of these attributes should be required here
4525          * but since they were not used when the command was originally
4526          * added, keep them optional for old user space programs to let
4527          * them continue to work with drivers that do not need the
4528          * additional information -- drivers must check!
4529          */
4530         if (info->attrs[NL80211_ATTR_SSID]) {
4531                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4532                 params.ssid_len =
4533                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4534                 if (params.ssid_len == 0 ||
4535                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4536                         return -EINVAL;
4537         }
4538
4539         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4540                 params.hidden_ssid = nla_get_u32(
4541                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4542
4543         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4544
4545         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4546                 params.auth_type = nla_get_u32(
4547                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4548                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4549                                              NL80211_CMD_START_AP))
4550                         return -EINVAL;
4551         } else
4552                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4553
4554         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4555                                       NL80211_MAX_NR_CIPHER_SUITES);
4556         if (err)
4557                 return err;
4558
4559         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4560                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4561                         return -EOPNOTSUPP;
4562                 params.inactivity_timeout = nla_get_u16(
4563                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4564         }
4565
4566         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4567                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4568                         return -EINVAL;
4569                 params.p2p_ctwindow =
4570                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4571                 if (params.p2p_ctwindow != 0 &&
4572                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4573                         return -EINVAL;
4574         }
4575
4576         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4577                 u8 tmp;
4578
4579                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4580                         return -EINVAL;
4581                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4582                 params.p2p_opp_ps = tmp;
4583                 if (params.p2p_opp_ps != 0 &&
4584                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4585                         return -EINVAL;
4586         }
4587
4588         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4589                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4590                 if (err)
4591                         return err;
4592         } else if (wdev->preset_chandef.chan) {
4593                 params.chandef = wdev->preset_chandef;
4594         } else if (!nl80211_get_ap_channel(rdev, &params))
4595                 return -EINVAL;
4596
4597         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4598                                            wdev->iftype))
4599                 return -EINVAL;
4600
4601         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4602                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4603                 if (err)
4604                         return err;
4605
4606                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4607                                               &params.beacon_rate);
4608                 if (err)
4609                         return err;
4610         }
4611
4612         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4613                 params.smps_mode =
4614                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4615                 switch (params.smps_mode) {
4616                 case NL80211_SMPS_OFF:
4617                         break;
4618                 case NL80211_SMPS_STATIC:
4619                         if (!(rdev->wiphy.features &
4620                               NL80211_FEATURE_STATIC_SMPS))
4621                                 return -EINVAL;
4622                         break;
4623                 case NL80211_SMPS_DYNAMIC:
4624                         if (!(rdev->wiphy.features &
4625                               NL80211_FEATURE_DYNAMIC_SMPS))
4626                                 return -EINVAL;
4627                         break;
4628                 default:
4629                         return -EINVAL;
4630                 }
4631         } else {
4632                 params.smps_mode = NL80211_SMPS_OFF;
4633         }
4634
4635         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4636         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4637                 return -EOPNOTSUPP;
4638
4639         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4640                 params.acl = parse_acl_data(&rdev->wiphy, info);
4641                 if (IS_ERR(params.acl))
4642                         return PTR_ERR(params.acl);
4643         }
4644
4645         params.twt_responder =
4646                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4647
4648         nl80211_calculate_ap_params(&params);
4649
4650         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4651                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4652
4653         wdev_lock(wdev);
4654         err = rdev_start_ap(rdev, dev, &params);
4655         if (!err) {
4656                 wdev->preset_chandef = params.chandef;
4657                 wdev->beacon_interval = params.beacon_interval;
4658                 wdev->chandef = params.chandef;
4659                 wdev->ssid_len = params.ssid_len;
4660                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4661
4662                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4663                         wdev->conn_owner_nlportid = info->snd_portid;
4664         }
4665         wdev_unlock(wdev);
4666
4667         kfree(params.acl);
4668
4669         return err;
4670 }
4671
4672 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4673 {
4674         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4675         struct net_device *dev = info->user_ptr[1];
4676         struct wireless_dev *wdev = dev->ieee80211_ptr;
4677         struct cfg80211_beacon_data params;
4678         int err;
4679
4680         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4681             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4682                 return -EOPNOTSUPP;
4683
4684         if (!rdev->ops->change_beacon)
4685                 return -EOPNOTSUPP;
4686
4687         if (!wdev->beacon_interval)
4688                 return -EINVAL;
4689
4690         err = nl80211_parse_beacon(rdev, info->attrs, &params);
4691         if (err)
4692                 return err;
4693
4694         wdev_lock(wdev);
4695         err = rdev_change_beacon(rdev, dev, &params);
4696         wdev_unlock(wdev);
4697
4698         return err;
4699 }
4700
4701 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4702 {
4703         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4704         struct net_device *dev = info->user_ptr[1];
4705
4706         return cfg80211_stop_ap(rdev, dev, false);
4707 }
4708
4709 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4710         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4711         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4712         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4713         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4714         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4715         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4716 };
4717
4718 static int parse_station_flags(struct genl_info *info,
4719                                enum nl80211_iftype iftype,
4720                                struct station_parameters *params)
4721 {
4722         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4723         struct nlattr *nla;
4724         int flag;
4725
4726         /*
4727          * Try parsing the new attribute first so userspace
4728          * can specify both for older kernels.
4729          */
4730         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4731         if (nla) {
4732                 struct nl80211_sta_flag_update *sta_flags;
4733
4734                 sta_flags = nla_data(nla);
4735                 params->sta_flags_mask = sta_flags->mask;
4736                 params->sta_flags_set = sta_flags->set;
4737                 params->sta_flags_set &= params->sta_flags_mask;
4738                 if ((params->sta_flags_mask |
4739                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4740                         return -EINVAL;
4741                 return 0;
4742         }
4743
4744         /* if present, parse the old attribute */
4745
4746         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4747         if (!nla)
4748                 return 0;
4749
4750         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
4751                 return -EINVAL;
4752
4753         /*
4754          * Only allow certain flags for interface types so that
4755          * other attributes are silently ignored. Remember that
4756          * this is backward compatibility code with old userspace
4757          * and shouldn't be hit in other cases anyway.
4758          */
4759         switch (iftype) {
4760         case NL80211_IFTYPE_AP:
4761         case NL80211_IFTYPE_AP_VLAN:
4762         case NL80211_IFTYPE_P2P_GO:
4763                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4764                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4765                                          BIT(NL80211_STA_FLAG_WME) |
4766                                          BIT(NL80211_STA_FLAG_MFP);
4767                 break;
4768         case NL80211_IFTYPE_P2P_CLIENT:
4769         case NL80211_IFTYPE_STATION:
4770                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4771                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4772                 break;
4773         case NL80211_IFTYPE_MESH_POINT:
4774                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4775                                          BIT(NL80211_STA_FLAG_MFP) |
4776                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4777                 break;
4778         default:
4779                 return -EINVAL;
4780         }
4781
4782         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4783                 if (flags[flag]) {
4784                         params->sta_flags_set |= (1<<flag);
4785
4786                         /* no longer support new API additions in old API */
4787                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4788                                 return -EINVAL;
4789                 }
4790         }
4791
4792         return 0;
4793 }
4794
4795 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4796 {
4797         struct nlattr *rate;
4798         u32 bitrate;
4799         u16 bitrate_compat;
4800         enum nl80211_rate_info rate_flg;
4801
4802         rate = nla_nest_start_noflag(msg, attr);
4803         if (!rate)
4804                 return false;
4805
4806         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4807         bitrate = cfg80211_calculate_bitrate(info);
4808         /* report 16-bit bitrate only if we can */
4809         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4810         if (bitrate > 0 &&
4811             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4812                 return false;
4813         if (bitrate_compat > 0 &&
4814             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4815                 return false;
4816
4817         switch (info->bw) {
4818         case RATE_INFO_BW_5:
4819                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4820                 break;
4821         case RATE_INFO_BW_10:
4822                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4823                 break;
4824         default:
4825                 WARN_ON(1);
4826                 /* fall through */
4827         case RATE_INFO_BW_20:
4828                 rate_flg = 0;
4829                 break;
4830         case RATE_INFO_BW_40:
4831                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4832                 break;
4833         case RATE_INFO_BW_80:
4834                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4835                 break;
4836         case RATE_INFO_BW_160:
4837                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4838                 break;
4839         case RATE_INFO_BW_HE_RU:
4840                 rate_flg = 0;
4841                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4842         }
4843
4844         if (rate_flg && nla_put_flag(msg, rate_flg))
4845                 return false;
4846
4847         if (info->flags & RATE_INFO_FLAGS_MCS) {
4848                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4849                         return false;
4850                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4851                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4852                         return false;
4853         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4854                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4855                         return false;
4856                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4857                         return false;
4858                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4859                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4860                         return false;
4861         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
4862                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
4863                         return false;
4864                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
4865                         return false;
4866                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
4867                         return false;
4868                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
4869                         return false;
4870                 if (info->bw == RATE_INFO_BW_HE_RU &&
4871                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
4872                                info->he_ru_alloc))
4873                         return false;
4874         }
4875
4876         nla_nest_end(msg, rate);
4877         return true;
4878 }
4879
4880 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4881                                int id)
4882 {
4883         void *attr;
4884         int i = 0;
4885
4886         if (!mask)
4887                 return true;
4888
4889         attr = nla_nest_start_noflag(msg, id);
4890         if (!attr)
4891                 return false;
4892
4893         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4894                 if (!(mask & BIT(i)))
4895                         continue;
4896
4897                 if (nla_put_u8(msg, i, signal[i]))
4898                         return false;
4899         }
4900
4901         nla_nest_end(msg, attr);
4902
4903         return true;
4904 }
4905
4906 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4907                                 u32 seq, int flags,
4908                                 struct cfg80211_registered_device *rdev,
4909                                 struct net_device *dev,
4910                                 const u8 *mac_addr, struct station_info *sinfo)
4911 {
4912         void *hdr;
4913         struct nlattr *sinfoattr, *bss_param;
4914
4915         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4916         if (!hdr) {
4917                 cfg80211_sinfo_release_content(sinfo);
4918                 return -1;
4919         }
4920
4921         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4922             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4923             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4924                 goto nla_put_failure;
4925
4926         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
4927         if (!sinfoattr)
4928                 goto nla_put_failure;
4929
4930 #define PUT_SINFO(attr, memb, type) do {                                \
4931         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
4932         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
4933             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
4934                              sinfo->memb))                              \
4935                 goto nla_put_failure;                                   \
4936         } while (0)
4937 #define PUT_SINFO_U64(attr, memb) do {                                  \
4938         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
4939             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
4940                               sinfo->memb, NL80211_STA_INFO_PAD))       \
4941                 goto nla_put_failure;                                   \
4942         } while (0)
4943
4944         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4945         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4946
4947         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
4948                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
4949             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4950                         (u32)sinfo->rx_bytes))
4951                 goto nla_put_failure;
4952
4953         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
4954                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
4955             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4956                         (u32)sinfo->tx_bytes))
4957                 goto nla_put_failure;
4958
4959         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4960         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4961         PUT_SINFO(LLID, llid, u16);
4962         PUT_SINFO(PLID, plid, u16);
4963         PUT_SINFO(PLINK_STATE, plink_state, u8);
4964         PUT_SINFO_U64(RX_DURATION, rx_duration);
4965         PUT_SINFO_U64(TX_DURATION, tx_duration);
4966
4967         if (wiphy_ext_feature_isset(&rdev->wiphy,
4968                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
4969                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
4970
4971         switch (rdev->wiphy.signal_type) {
4972         case CFG80211_SIGNAL_TYPE_MBM:
4973                 PUT_SINFO(SIGNAL, signal, u8);
4974                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4975                 break;
4976         default:
4977                 break;
4978         }
4979         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4980                 if (!nl80211_put_signal(msg, sinfo->chains,
4981                                         sinfo->chain_signal,
4982                                         NL80211_STA_INFO_CHAIN_SIGNAL))
4983                         goto nla_put_failure;
4984         }
4985         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4986                 if (!nl80211_put_signal(msg, sinfo->chains,
4987                                         sinfo->chain_signal_avg,
4988                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4989                         goto nla_put_failure;
4990         }
4991         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
4992                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4993                                           NL80211_STA_INFO_TX_BITRATE))
4994                         goto nla_put_failure;
4995         }
4996         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
4997                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4998                                           NL80211_STA_INFO_RX_BITRATE))
4999                         goto nla_put_failure;
5000         }
5001
5002         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5003         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5004         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5005         PUT_SINFO(TX_FAILED, tx_failed, u32);
5006         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5007         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5008         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5009         PUT_SINFO(LOCAL_PM, local_pm, u32);
5010         PUT_SINFO(PEER_PM, peer_pm, u32);
5011         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5012         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5013
5014         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5015                 bss_param = nla_nest_start_noflag(msg,
5016                                                   NL80211_STA_INFO_BSS_PARAM);
5017                 if (!bss_param)
5018                         goto nla_put_failure;
5019
5020                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5021                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5022                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5023                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5024                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5025                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5026                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5027                                sinfo->bss_param.dtim_period) ||
5028                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5029                                 sinfo->bss_param.beacon_interval))
5030                         goto nla_put_failure;
5031
5032                 nla_nest_end(msg, bss_param);
5033         }
5034         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5035             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5036                     sizeof(struct nl80211_sta_flag_update),
5037                     &sinfo->sta_flags))
5038                 goto nla_put_failure;
5039
5040         PUT_SINFO_U64(T_OFFSET, t_offset);
5041         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5042         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5043         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5044         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5045         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5046         if (wiphy_ext_feature_isset(&rdev->wiphy,
5047                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5048                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5049                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5050         }
5051
5052 #undef PUT_SINFO
5053 #undef PUT_SINFO_U64
5054
5055         if (sinfo->pertid) {
5056                 struct nlattr *tidsattr;
5057                 int tid;
5058
5059                 tidsattr = nla_nest_start_noflag(msg,
5060                                                  NL80211_STA_INFO_TID_STATS);
5061                 if (!tidsattr)
5062                         goto nla_put_failure;
5063
5064                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5065                         struct cfg80211_tid_stats *tidstats;
5066                         struct nlattr *tidattr;
5067
5068                         tidstats = &sinfo->pertid[tid];
5069
5070                         if (!tidstats->filled)
5071                                 continue;
5072
5073                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5074                         if (!tidattr)
5075                                 goto nla_put_failure;
5076
5077 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5078         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5079             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5080                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5081                 goto nla_put_failure;                                   \
5082         } while (0)
5083
5084                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5085                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5086                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5087                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5088
5089 #undef PUT_TIDVAL_U64
5090                         if ((tidstats->filled &
5091                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5092                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5093                                                    NL80211_TID_STATS_TXQ_STATS))
5094                                 goto nla_put_failure;
5095
5096                         nla_nest_end(msg, tidattr);
5097                 }
5098
5099                 nla_nest_end(msg, tidsattr);
5100         }
5101
5102         nla_nest_end(msg, sinfoattr);
5103
5104         if (sinfo->assoc_req_ies_len &&
5105             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5106                     sinfo->assoc_req_ies))
5107                 goto nla_put_failure;
5108
5109         cfg80211_sinfo_release_content(sinfo);
5110         genlmsg_end(msg, hdr);
5111         return 0;
5112
5113  nla_put_failure:
5114         cfg80211_sinfo_release_content(sinfo);
5115         genlmsg_cancel(msg, hdr);
5116         return -EMSGSIZE;
5117 }
5118
5119 static int nl80211_dump_station(struct sk_buff *skb,
5120                                 struct netlink_callback *cb)
5121 {
5122         struct station_info sinfo;
5123         struct cfg80211_registered_device *rdev;
5124         struct wireless_dev *wdev;
5125         u8 mac_addr[ETH_ALEN];
5126         int sta_idx = cb->args[2];
5127         int err;
5128
5129         rtnl_lock();
5130         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5131         if (err)
5132                 goto out_err;
5133
5134         if (!wdev->netdev) {
5135                 err = -EINVAL;
5136                 goto out_err;
5137         }
5138
5139         if (!rdev->ops->dump_station) {
5140                 err = -EOPNOTSUPP;
5141                 goto out_err;
5142         }
5143
5144         while (1) {
5145                 memset(&sinfo, 0, sizeof(sinfo));
5146                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5147                                         mac_addr, &sinfo);
5148                 if (err == -ENOENT)
5149                         break;
5150                 if (err)
5151                         goto out_err;
5152
5153                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5154                                 NETLINK_CB(cb->skb).portid,
5155                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5156                                 rdev, wdev->netdev, mac_addr,
5157                                 &sinfo) < 0)
5158                         goto out;
5159
5160                 sta_idx++;
5161         }
5162
5163  out:
5164         cb->args[2] = sta_idx;
5165         err = skb->len;
5166  out_err:
5167         rtnl_unlock();
5168
5169         return err;
5170 }
5171
5172 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5173 {
5174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5175         struct net_device *dev = info->user_ptr[1];
5176         struct station_info sinfo;
5177         struct sk_buff *msg;
5178         u8 *mac_addr = NULL;
5179         int err;
5180
5181         memset(&sinfo, 0, sizeof(sinfo));
5182
5183         if (!info->attrs[NL80211_ATTR_MAC])
5184                 return -EINVAL;
5185
5186         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5187
5188         if (!rdev->ops->get_station)
5189                 return -EOPNOTSUPP;
5190
5191         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5192         if (err)
5193                 return err;
5194
5195         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5196         if (!msg) {
5197                 cfg80211_sinfo_release_content(&sinfo);
5198                 return -ENOMEM;
5199         }
5200
5201         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5202                                  info->snd_portid, info->snd_seq, 0,
5203                                  rdev, dev, mac_addr, &sinfo) < 0) {
5204                 nlmsg_free(msg);
5205                 return -ENOBUFS;
5206         }
5207
5208         return genlmsg_reply(msg, info);
5209 }
5210
5211 int cfg80211_check_station_change(struct wiphy *wiphy,
5212                                   struct station_parameters *params,
5213                                   enum cfg80211_station_type statype)
5214 {
5215         if (params->listen_interval != -1 &&
5216             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5217                 return -EINVAL;
5218
5219         if (params->support_p2p_ps != -1 &&
5220             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5221                 return -EINVAL;
5222
5223         if (params->aid &&
5224             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5225             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5226                 return -EINVAL;
5227
5228         /* When you run into this, adjust the code below for the new flag */
5229         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5230
5231         switch (statype) {
5232         case CFG80211_STA_MESH_PEER_KERNEL:
5233         case CFG80211_STA_MESH_PEER_USER:
5234                 /*
5235                  * No ignoring the TDLS flag here -- the userspace mesh
5236                  * code doesn't have the bug of including TDLS in the
5237                  * mask everywhere.
5238                  */
5239                 if (params->sta_flags_mask &
5240                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5241                                   BIT(NL80211_STA_FLAG_MFP) |
5242                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5243                         return -EINVAL;
5244                 break;
5245         case CFG80211_STA_TDLS_PEER_SETUP:
5246         case CFG80211_STA_TDLS_PEER_ACTIVE:
5247                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5248                         return -EINVAL;
5249                 /* ignore since it can't change */
5250                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5251                 break;
5252         default:
5253                 /* disallow mesh-specific things */
5254                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5255                         return -EINVAL;
5256                 if (params->local_pm)
5257                         return -EINVAL;
5258                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5259                         return -EINVAL;
5260         }
5261
5262         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5263             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5264                 /* TDLS can't be set, ... */
5265                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5266                         return -EINVAL;
5267                 /*
5268                  * ... but don't bother the driver with it. This works around
5269                  * a hostapd/wpa_supplicant issue -- it always includes the
5270                  * TLDS_PEER flag in the mask even for AP mode.
5271                  */
5272                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5273         }
5274
5275         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5276             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5277                 /* reject other things that can't change */
5278                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5279                         return -EINVAL;
5280                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5281                         return -EINVAL;
5282                 if (params->supported_rates)
5283                         return -EINVAL;
5284                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5285                     params->he_capa)
5286                         return -EINVAL;
5287         }
5288
5289         if (statype != CFG80211_STA_AP_CLIENT &&
5290             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5291                 if (params->vlan)
5292                         return -EINVAL;
5293         }
5294
5295         switch (statype) {
5296         case CFG80211_STA_AP_MLME_CLIENT:
5297                 /* Use this only for authorizing/unauthorizing a station */
5298                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5299                         return -EOPNOTSUPP;
5300                 break;
5301         case CFG80211_STA_AP_CLIENT:
5302         case CFG80211_STA_AP_CLIENT_UNASSOC:
5303                 /* accept only the listed bits */
5304                 if (params->sta_flags_mask &
5305                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5306                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5307                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5308                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5309                                   BIT(NL80211_STA_FLAG_WME) |
5310                                   BIT(NL80211_STA_FLAG_MFP)))
5311                         return -EINVAL;
5312
5313                 /* but authenticated/associated only if driver handles it */
5314                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5315                     params->sta_flags_mask &
5316                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5317                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5318                         return -EINVAL;
5319                 break;
5320         case CFG80211_STA_IBSS:
5321         case CFG80211_STA_AP_STA:
5322                 /* reject any changes other than AUTHORIZED */
5323                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5324                         return -EINVAL;
5325                 break;
5326         case CFG80211_STA_TDLS_PEER_SETUP:
5327                 /* reject any changes other than AUTHORIZED or WME */
5328                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5329                                                BIT(NL80211_STA_FLAG_WME)))
5330                         return -EINVAL;
5331                 /* force (at least) rates when authorizing */
5332                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5333                     !params->supported_rates)
5334                         return -EINVAL;
5335                 break;
5336         case CFG80211_STA_TDLS_PEER_ACTIVE:
5337                 /* reject any changes */
5338                 return -EINVAL;
5339         case CFG80211_STA_MESH_PEER_KERNEL:
5340                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5341                         return -EINVAL;
5342                 break;
5343         case CFG80211_STA_MESH_PEER_USER:
5344                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5345                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5346                         return -EINVAL;
5347                 break;
5348         }
5349
5350         /*
5351          * Older kernel versions ignored this attribute entirely, so don't
5352          * reject attempts to update it but mark it as unused instead so the
5353          * driver won't look at the data.
5354          */
5355         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5356             statype != CFG80211_STA_TDLS_PEER_SETUP)
5357                 params->opmode_notif_used = false;
5358
5359         return 0;
5360 }
5361 EXPORT_SYMBOL(cfg80211_check_station_change);
5362
5363 /*
5364  * Get vlan interface making sure it is running and on the right wiphy.
5365  */
5366 static struct net_device *get_vlan(struct genl_info *info,
5367                                    struct cfg80211_registered_device *rdev)
5368 {
5369         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5370         struct net_device *v;
5371         int ret;
5372
5373         if (!vlanattr)
5374                 return NULL;
5375
5376         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5377         if (!v)
5378                 return ERR_PTR(-ENODEV);
5379
5380         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5381                 ret = -EINVAL;
5382                 goto error;
5383         }
5384
5385         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5386             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5387             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5388                 ret = -EINVAL;
5389                 goto error;
5390         }
5391
5392         if (!netif_running(v)) {
5393                 ret = -ENETDOWN;
5394                 goto error;
5395         }
5396
5397         return v;
5398  error:
5399         dev_put(v);
5400         return ERR_PTR(ret);
5401 }
5402
5403 static const struct nla_policy
5404 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5405         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5406         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5407 };
5408
5409 static int nl80211_parse_sta_wme(struct genl_info *info,
5410                                  struct station_parameters *params)
5411 {
5412         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5413         struct nlattr *nla;
5414         int err;
5415
5416         /* parse WME attributes if present */
5417         if (!info->attrs[NL80211_ATTR_STA_WME])
5418                 return 0;
5419
5420         nla = info->attrs[NL80211_ATTR_STA_WME];
5421         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5422                                           nl80211_sta_wme_policy,
5423                                           info->extack);
5424         if (err)
5425                 return err;
5426
5427         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5428                 params->uapsd_queues = nla_get_u8(
5429                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5430         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5431                 return -EINVAL;
5432
5433         if (tb[NL80211_STA_WME_MAX_SP])
5434                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5435
5436         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5437                 return -EINVAL;
5438
5439         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5440
5441         return 0;
5442 }
5443
5444 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5445                                       struct station_parameters *params)
5446 {
5447         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5448                 params->supported_channels =
5449                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5450                 params->supported_channels_len =
5451                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5452                 /*
5453                  * Need to include at least one (first channel, number of
5454                  * channels) tuple for each subband, and must have proper
5455                  * tuples for the rest of the data as well.
5456                  */
5457                 if (params->supported_channels_len < 2)
5458                         return -EINVAL;
5459                 if (params->supported_channels_len % 2)
5460                         return -EINVAL;
5461         }
5462
5463         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5464                 params->supported_oper_classes =
5465                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5466                 params->supported_oper_classes_len =
5467                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5468                 /*
5469                  * The value of the Length field of the Supported Operating
5470                  * Classes element is between 2 and 253.
5471                  */
5472                 if (params->supported_oper_classes_len < 2 ||
5473                     params->supported_oper_classes_len > 253)
5474                         return -EINVAL;
5475         }
5476         return 0;
5477 }
5478
5479 static int nl80211_set_station_tdls(struct genl_info *info,
5480                                     struct station_parameters *params)
5481 {
5482         int err;
5483         /* Dummy STA entry gets updated once the peer capabilities are known */
5484         if (info->attrs[NL80211_ATTR_PEER_AID])
5485                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5486         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5487                 params->ht_capa =
5488                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5489         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5490                 params->vht_capa =
5491                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5492         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5493                 params->he_capa =
5494                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5495                 params->he_capa_len =
5496                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5497
5498                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5499                         return -EINVAL;
5500         }
5501
5502         err = nl80211_parse_sta_channel_info(info, params);
5503         if (err)
5504                 return err;
5505
5506         return nl80211_parse_sta_wme(info, params);
5507 }
5508
5509 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5510                                              struct station_parameters *params)
5511 {
5512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5513         int idx;
5514
5515         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5516                 if (!rdev->ops->set_tx_power ||
5517                     !wiphy_ext_feature_isset(&rdev->wiphy,
5518                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5519                         return -EOPNOTSUPP;
5520
5521                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5522                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5523
5524                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5525                         idx = NL80211_ATTR_STA_TX_POWER;
5526
5527                         if (info->attrs[idx])
5528                                 params->txpwr.power =
5529                                         nla_get_s16(info->attrs[idx]);
5530                         else
5531                                 return -EINVAL;
5532                 }
5533                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5534         }
5535
5536         return 0;
5537 }
5538
5539 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5540 {
5541         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5542         struct net_device *dev = info->user_ptr[1];
5543         struct station_parameters params;
5544         u8 *mac_addr;
5545         int err;
5546
5547         memset(&params, 0, sizeof(params));
5548
5549         if (!rdev->ops->change_station)
5550                 return -EOPNOTSUPP;
5551
5552         /*
5553          * AID and listen_interval properties can be set only for unassociated
5554          * station. Include these parameters here and will check them in
5555          * cfg80211_check_station_change().
5556          */
5557         if (info->attrs[NL80211_ATTR_STA_AID])
5558                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5559
5560         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5561                 params.listen_interval =
5562                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5563         else
5564                 params.listen_interval = -1;
5565
5566         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5567                 params.support_p2p_ps =
5568                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5569         else
5570                 params.support_p2p_ps = -1;
5571
5572         if (!info->attrs[NL80211_ATTR_MAC])
5573                 return -EINVAL;
5574
5575         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5576
5577         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5578                 params.supported_rates =
5579                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5580                 params.supported_rates_len =
5581                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5582         }
5583
5584         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5585                 params.capability =
5586                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5587                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5588         }
5589
5590         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5591                 params.ext_capab =
5592                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5593                 params.ext_capab_len =
5594                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5595         }
5596
5597         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5598                 return -EINVAL;
5599
5600         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5601                 params.plink_action =
5602                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5603
5604         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5605                 params.plink_state =
5606                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5607                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5608                         params.peer_aid = nla_get_u16(
5609                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5610                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5611         }
5612
5613         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5614                 params.local_pm = nla_get_u32(
5615                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5616
5617         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5618                 params.opmode_notif_used = true;
5619                 params.opmode_notif =
5620                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5621         }
5622
5623         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5624                 params.airtime_weight =
5625                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5626
5627         if (params.airtime_weight &&
5628             !wiphy_ext_feature_isset(&rdev->wiphy,
5629                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5630                 return -EOPNOTSUPP;
5631
5632         err = nl80211_parse_sta_txpower_setting(info, &params);
5633         if (err)
5634                 return err;
5635
5636         /* Include parameters for TDLS peer (will check later) */
5637         err = nl80211_set_station_tdls(info, &params);
5638         if (err)
5639                 return err;
5640
5641         params.vlan = get_vlan(info, rdev);
5642         if (IS_ERR(params.vlan))
5643                 return PTR_ERR(params.vlan);
5644
5645         switch (dev->ieee80211_ptr->iftype) {
5646         case NL80211_IFTYPE_AP:
5647         case NL80211_IFTYPE_AP_VLAN:
5648         case NL80211_IFTYPE_P2P_GO:
5649         case NL80211_IFTYPE_P2P_CLIENT:
5650         case NL80211_IFTYPE_STATION:
5651         case NL80211_IFTYPE_ADHOC:
5652         case NL80211_IFTYPE_MESH_POINT:
5653                 break;
5654         default:
5655                 err = -EOPNOTSUPP;
5656                 goto out_put_vlan;
5657         }
5658
5659         /* driver will call cfg80211_check_station_change() */
5660         err = rdev_change_station(rdev, dev, mac_addr, &params);
5661
5662  out_put_vlan:
5663         if (params.vlan)
5664                 dev_put(params.vlan);
5665
5666         return err;
5667 }
5668
5669 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5670 {
5671         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5672         int err;
5673         struct net_device *dev = info->user_ptr[1];
5674         struct station_parameters params;
5675         u8 *mac_addr = NULL;
5676         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5677                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5678
5679         memset(&params, 0, sizeof(params));
5680
5681         if (!rdev->ops->add_station)
5682                 return -EOPNOTSUPP;
5683
5684         if (!info->attrs[NL80211_ATTR_MAC])
5685                 return -EINVAL;
5686
5687         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5688                 return -EINVAL;
5689
5690         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5691                 return -EINVAL;
5692
5693         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5694             !info->attrs[NL80211_ATTR_PEER_AID])
5695                 return -EINVAL;
5696
5697         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5698         params.supported_rates =
5699                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5700         params.supported_rates_len =
5701                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5702         params.listen_interval =
5703                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5704
5705         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5706                 params.support_p2p_ps =
5707                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5708         } else {
5709                 /*
5710                  * if not specified, assume it's supported for P2P GO interface,
5711                  * and is NOT supported for AP interface
5712                  */
5713                 params.support_p2p_ps =
5714                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5715         }
5716
5717         if (info->attrs[NL80211_ATTR_PEER_AID])
5718                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5719         else
5720                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5721
5722         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5723                 params.capability =
5724                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5725                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5726         }
5727
5728         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5729                 params.ext_capab =
5730                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5731                 params.ext_capab_len =
5732                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5733         }
5734
5735         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5736                 params.ht_capa =
5737                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5738
5739         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5740                 params.vht_capa =
5741                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5742
5743         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5744                 params.he_capa =
5745                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5746                 params.he_capa_len =
5747                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5748
5749                 /* max len is validated in nla policy */
5750                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5751                         return -EINVAL;
5752         }
5753
5754         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5755                 params.opmode_notif_used = true;
5756                 params.opmode_notif =
5757                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5758         }
5759
5760         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5761                 params.plink_action =
5762                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5763
5764         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5765                 params.airtime_weight =
5766                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5767
5768         if (params.airtime_weight &&
5769             !wiphy_ext_feature_isset(&rdev->wiphy,
5770                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5771                 return -EOPNOTSUPP;
5772
5773         err = nl80211_parse_sta_txpower_setting(info, &params);
5774         if (err)
5775                 return err;
5776
5777         err = nl80211_parse_sta_channel_info(info, &params);
5778         if (err)
5779                 return err;
5780
5781         err = nl80211_parse_sta_wme(info, &params);
5782         if (err)
5783                 return err;
5784
5785         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5786                 return -EINVAL;
5787
5788         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5789          * as userspace might just pass through the capabilities from the IEs
5790          * directly, rather than enforcing this restriction and returning an
5791          * error in this case.
5792          */
5793         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5794                 params.ht_capa = NULL;
5795                 params.vht_capa = NULL;
5796
5797                 /* HE requires WME */
5798                 if (params.he_capa_len)
5799                         return -EINVAL;
5800         }
5801
5802         /* When you run into this, adjust the code below for the new flag */
5803         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5804
5805         switch (dev->ieee80211_ptr->iftype) {
5806         case NL80211_IFTYPE_AP:
5807         case NL80211_IFTYPE_AP_VLAN:
5808         case NL80211_IFTYPE_P2P_GO:
5809                 /* ignore WME attributes if iface/sta is not capable */
5810                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5811                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5812                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5813
5814                 /* TDLS peers cannot be added */
5815                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5816                     info->attrs[NL80211_ATTR_PEER_AID])
5817                         return -EINVAL;
5818                 /* but don't bother the driver with it */
5819                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5820
5821                 /* allow authenticated/associated only if driver handles it */
5822                 if (!(rdev->wiphy.features &
5823                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5824                     params.sta_flags_mask & auth_assoc)
5825                         return -EINVAL;
5826
5827                 /* Older userspace, or userspace wanting to be compatible with
5828                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5829                  * and assoc flags in the mask, but assumes the station will be
5830                  * added as associated anyway since this was the required driver
5831                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5832                  * introduced.
5833                  * In order to not bother drivers with this quirk in the API
5834                  * set the flags in both the mask and set for new stations in
5835                  * this case.
5836                  */
5837                 if (!(params.sta_flags_mask & auth_assoc)) {
5838                         params.sta_flags_mask |= auth_assoc;
5839                         params.sta_flags_set |= auth_assoc;
5840                 }
5841
5842                 /* must be last in here for error handling */
5843                 params.vlan = get_vlan(info, rdev);
5844                 if (IS_ERR(params.vlan))
5845                         return PTR_ERR(params.vlan);
5846                 break;
5847         case NL80211_IFTYPE_MESH_POINT:
5848                 /* ignore uAPSD data */
5849                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5850
5851                 /* associated is disallowed */
5852                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5853                         return -EINVAL;
5854                 /* TDLS peers cannot be added */
5855                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5856                     info->attrs[NL80211_ATTR_PEER_AID])
5857                         return -EINVAL;
5858                 break;
5859         case NL80211_IFTYPE_STATION:
5860         case NL80211_IFTYPE_P2P_CLIENT:
5861                 /* ignore uAPSD data */
5862                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5863
5864                 /* these are disallowed */
5865                 if (params.sta_flags_mask &
5866                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5867                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5868                         return -EINVAL;
5869                 /* Only TDLS peers can be added */
5870                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5871                         return -EINVAL;
5872                 /* Can only add if TDLS ... */
5873                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5874                         return -EOPNOTSUPP;
5875                 /* ... with external setup is supported */
5876                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5877                         return -EOPNOTSUPP;
5878                 /*
5879                  * Older wpa_supplicant versions always mark the TDLS peer
5880                  * as authorized, but it shouldn't yet be.
5881                  */
5882                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5883                 break;
5884         default:
5885                 return -EOPNOTSUPP;
5886         }
5887
5888         /* be aware of params.vlan when changing code here */
5889
5890         err = rdev_add_station(rdev, dev, mac_addr, &params);
5891
5892         if (params.vlan)
5893                 dev_put(params.vlan);
5894         return err;
5895 }
5896
5897 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5898 {
5899         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5900         struct net_device *dev = info->user_ptr[1];
5901         struct station_del_parameters params;
5902
5903         memset(&params, 0, sizeof(params));
5904
5905         if (info->attrs[NL80211_ATTR_MAC])
5906                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5907
5908         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5909             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5910             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5911             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5912                 return -EINVAL;
5913
5914         if (!rdev->ops->del_station)
5915                 return -EOPNOTSUPP;
5916
5917         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5918                 params.subtype =
5919                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5920                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5921                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5922                         return -EINVAL;
5923         } else {
5924                 /* Default to Deauthentication frame */
5925                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5926         }
5927
5928         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5929                 params.reason_code =
5930                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5931                 if (params.reason_code == 0)
5932                         return -EINVAL; /* 0 is reserved */
5933         } else {
5934                 /* Default to reason code 2 */
5935                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5936         }
5937
5938         return rdev_del_station(rdev, dev, &params);
5939 }
5940
5941 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5942                                 int flags, struct net_device *dev,
5943                                 u8 *dst, u8 *next_hop,
5944                                 struct mpath_info *pinfo)
5945 {
5946         void *hdr;
5947         struct nlattr *pinfoattr;
5948
5949         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5950         if (!hdr)
5951                 return -1;
5952
5953         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5954             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5955             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5956             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5957                 goto nla_put_failure;
5958
5959         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
5960         if (!pinfoattr)
5961                 goto nla_put_failure;
5962         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5963             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5964                         pinfo->frame_qlen))
5965                 goto nla_put_failure;
5966         if (((pinfo->filled & MPATH_INFO_SN) &&
5967              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5968             ((pinfo->filled & MPATH_INFO_METRIC) &&
5969              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5970                          pinfo->metric)) ||
5971             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5972              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5973                          pinfo->exptime)) ||
5974             ((pinfo->filled & MPATH_INFO_FLAGS) &&
5975              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5976                         pinfo->flags)) ||
5977             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5978              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5979                          pinfo->discovery_timeout)) ||
5980             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5981              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5982                         pinfo->discovery_retries)) ||
5983             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
5984              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
5985                         pinfo->hop_count)) ||
5986             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
5987              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
5988                          pinfo->path_change_count)))
5989                 goto nla_put_failure;
5990
5991         nla_nest_end(msg, pinfoattr);
5992
5993         genlmsg_end(msg, hdr);
5994         return 0;
5995
5996  nla_put_failure:
5997         genlmsg_cancel(msg, hdr);
5998         return -EMSGSIZE;
5999 }
6000
6001 static int nl80211_dump_mpath(struct sk_buff *skb,
6002                               struct netlink_callback *cb)
6003 {
6004         struct mpath_info pinfo;
6005         struct cfg80211_registered_device *rdev;
6006         struct wireless_dev *wdev;
6007         u8 dst[ETH_ALEN];
6008         u8 next_hop[ETH_ALEN];
6009         int path_idx = cb->args[2];
6010         int err;
6011
6012         rtnl_lock();
6013         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6014         if (err)
6015                 goto out_err;
6016
6017         if (!rdev->ops->dump_mpath) {
6018                 err = -EOPNOTSUPP;
6019                 goto out_err;
6020         }
6021
6022         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6023                 err = -EOPNOTSUPP;
6024                 goto out_err;
6025         }
6026
6027         while (1) {
6028                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6029                                       next_hop, &pinfo);
6030                 if (err == -ENOENT)
6031                         break;
6032                 if (err)
6033                         goto out_err;
6034
6035                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6036                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6037                                        wdev->netdev, dst, next_hop,
6038                                        &pinfo) < 0)
6039                         goto out;
6040
6041                 path_idx++;
6042         }
6043
6044  out:
6045         cb->args[2] = path_idx;
6046         err = skb->len;
6047  out_err:
6048         rtnl_unlock();
6049         return err;
6050 }
6051
6052 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6053 {
6054         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6055         int err;
6056         struct net_device *dev = info->user_ptr[1];
6057         struct mpath_info pinfo;
6058         struct sk_buff *msg;
6059         u8 *dst = NULL;
6060         u8 next_hop[ETH_ALEN];
6061
6062         memset(&pinfo, 0, sizeof(pinfo));
6063
6064         if (!info->attrs[NL80211_ATTR_MAC])
6065                 return -EINVAL;
6066
6067         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6068
6069         if (!rdev->ops->get_mpath)
6070                 return -EOPNOTSUPP;
6071
6072         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6073                 return -EOPNOTSUPP;
6074
6075         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6076         if (err)
6077                 return err;
6078
6079         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6080         if (!msg)
6081                 return -ENOMEM;
6082
6083         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6084                                  dev, dst, next_hop, &pinfo) < 0) {
6085                 nlmsg_free(msg);
6086                 return -ENOBUFS;
6087         }
6088
6089         return genlmsg_reply(msg, info);
6090 }
6091
6092 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6093 {
6094         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6095         struct net_device *dev = info->user_ptr[1];
6096         u8 *dst = NULL;
6097         u8 *next_hop = NULL;
6098
6099         if (!info->attrs[NL80211_ATTR_MAC])
6100                 return -EINVAL;
6101
6102         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6103                 return -EINVAL;
6104
6105         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6106         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6107
6108         if (!rdev->ops->change_mpath)
6109                 return -EOPNOTSUPP;
6110
6111         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6112                 return -EOPNOTSUPP;
6113
6114         return rdev_change_mpath(rdev, dev, dst, next_hop);
6115 }
6116
6117 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6118 {
6119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6120         struct net_device *dev = info->user_ptr[1];
6121         u8 *dst = NULL;
6122         u8 *next_hop = NULL;
6123
6124         if (!info->attrs[NL80211_ATTR_MAC])
6125                 return -EINVAL;
6126
6127         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6128                 return -EINVAL;
6129
6130         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6131         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6132
6133         if (!rdev->ops->add_mpath)
6134                 return -EOPNOTSUPP;
6135
6136         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6137                 return -EOPNOTSUPP;
6138
6139         return rdev_add_mpath(rdev, dev, dst, next_hop);
6140 }
6141
6142 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6143 {
6144         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6145         struct net_device *dev = info->user_ptr[1];
6146         u8 *dst = NULL;
6147
6148         if (info->attrs[NL80211_ATTR_MAC])
6149                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6150
6151         if (!rdev->ops->del_mpath)
6152                 return -EOPNOTSUPP;
6153
6154         return rdev_del_mpath(rdev, dev, dst);
6155 }
6156
6157 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6158 {
6159         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6160         int err;
6161         struct net_device *dev = info->user_ptr[1];
6162         struct mpath_info pinfo;
6163         struct sk_buff *msg;
6164         u8 *dst = NULL;
6165         u8 mpp[ETH_ALEN];
6166
6167         memset(&pinfo, 0, sizeof(pinfo));
6168
6169         if (!info->attrs[NL80211_ATTR_MAC])
6170                 return -EINVAL;
6171
6172         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6173
6174         if (!rdev->ops->get_mpp)
6175                 return -EOPNOTSUPP;
6176
6177         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6178                 return -EOPNOTSUPP;
6179
6180         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6181         if (err)
6182                 return err;
6183
6184         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6185         if (!msg)
6186                 return -ENOMEM;
6187
6188         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6189                                dev, dst, mpp, &pinfo) < 0) {
6190                 nlmsg_free(msg);
6191                 return -ENOBUFS;
6192         }
6193
6194         return genlmsg_reply(msg, info);
6195 }
6196
6197 static int nl80211_dump_mpp(struct sk_buff *skb,
6198                             struct netlink_callback *cb)
6199 {
6200         struct mpath_info pinfo;
6201         struct cfg80211_registered_device *rdev;
6202         struct wireless_dev *wdev;
6203         u8 dst[ETH_ALEN];
6204         u8 mpp[ETH_ALEN];
6205         int path_idx = cb->args[2];
6206         int err;
6207
6208         rtnl_lock();
6209         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6210         if (err)
6211                 goto out_err;
6212
6213         if (!rdev->ops->dump_mpp) {
6214                 err = -EOPNOTSUPP;
6215                 goto out_err;
6216         }
6217
6218         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6219                 err = -EOPNOTSUPP;
6220                 goto out_err;
6221         }
6222
6223         while (1) {
6224                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6225                                     mpp, &pinfo);
6226                 if (err == -ENOENT)
6227                         break;
6228                 if (err)
6229                         goto out_err;
6230
6231                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6232                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6233                                        wdev->netdev, dst, mpp,
6234                                        &pinfo) < 0)
6235                         goto out;
6236
6237                 path_idx++;
6238         }
6239
6240  out:
6241         cb->args[2] = path_idx;
6242         err = skb->len;
6243  out_err:
6244         rtnl_unlock();
6245         return err;
6246 }
6247
6248 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6249 {
6250         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6251         struct net_device *dev = info->user_ptr[1];
6252         struct wireless_dev *wdev = dev->ieee80211_ptr;
6253         struct bss_parameters params;
6254         int err;
6255
6256         memset(&params, 0, sizeof(params));
6257         /* default to not changing parameters */
6258         params.use_cts_prot = -1;
6259         params.use_short_preamble = -1;
6260         params.use_short_slot_time = -1;
6261         params.ap_isolate = -1;
6262         params.ht_opmode = -1;
6263         params.p2p_ctwindow = -1;
6264         params.p2p_opp_ps = -1;
6265
6266         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6267                 params.use_cts_prot =
6268                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6269         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6270                 params.use_short_preamble =
6271                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6272         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6273                 params.use_short_slot_time =
6274                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6275         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6276                 params.basic_rates =
6277                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6278                 params.basic_rates_len =
6279                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6280         }
6281         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6282                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6283         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6284                 params.ht_opmode =
6285                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6286
6287         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6288                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6289                         return -EINVAL;
6290                 params.p2p_ctwindow =
6291                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6292                 if (params.p2p_ctwindow != 0 &&
6293                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6294                         return -EINVAL;
6295         }
6296
6297         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6298                 u8 tmp;
6299
6300                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6301                         return -EINVAL;
6302                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6303                 params.p2p_opp_ps = tmp;
6304                 if (params.p2p_opp_ps &&
6305                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6306                         return -EINVAL;
6307         }
6308
6309         if (!rdev->ops->change_bss)
6310                 return -EOPNOTSUPP;
6311
6312         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6313             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6314                 return -EOPNOTSUPP;
6315
6316         wdev_lock(wdev);
6317         err = rdev_change_bss(rdev, dev, &params);
6318         wdev_unlock(wdev);
6319
6320         return err;
6321 }
6322
6323 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6324 {
6325         char *data = NULL;
6326         bool is_indoor;
6327         enum nl80211_user_reg_hint_type user_reg_hint_type;
6328         u32 owner_nlportid;
6329
6330         /*
6331          * You should only get this when cfg80211 hasn't yet initialized
6332          * completely when built-in to the kernel right between the time
6333          * window between nl80211_init() and regulatory_init(), if that is
6334          * even possible.
6335          */
6336         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6337                 return -EINPROGRESS;
6338
6339         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6340                 user_reg_hint_type =
6341                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6342         else
6343                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6344
6345         switch (user_reg_hint_type) {
6346         case NL80211_USER_REG_HINT_USER:
6347         case NL80211_USER_REG_HINT_CELL_BASE:
6348                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6349                         return -EINVAL;
6350
6351                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6352                 return regulatory_hint_user(data, user_reg_hint_type);
6353         case NL80211_USER_REG_HINT_INDOOR:
6354                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6355                         owner_nlportid = info->snd_portid;
6356                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6357                 } else {
6358                         owner_nlportid = 0;
6359                         is_indoor = true;
6360                 }
6361
6362                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6363         default:
6364                 return -EINVAL;
6365         }
6366 }
6367
6368 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6369 {
6370         return reg_reload_regdb();
6371 }
6372
6373 static int nl80211_get_mesh_config(struct sk_buff *skb,
6374                                    struct genl_info *info)
6375 {
6376         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6377         struct net_device *dev = info->user_ptr[1];
6378         struct wireless_dev *wdev = dev->ieee80211_ptr;
6379         struct mesh_config cur_params;
6380         int err = 0;
6381         void *hdr;
6382         struct nlattr *pinfoattr;
6383         struct sk_buff *msg;
6384
6385         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6386                 return -EOPNOTSUPP;
6387
6388         if (!rdev->ops->get_mesh_config)
6389                 return -EOPNOTSUPP;
6390
6391         wdev_lock(wdev);
6392         /* If not connected, get default parameters */
6393         if (!wdev->mesh_id_len)
6394                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6395         else
6396                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6397         wdev_unlock(wdev);
6398
6399         if (err)
6400                 return err;
6401
6402         /* Draw up a netlink message to send back */
6403         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6404         if (!msg)
6405                 return -ENOMEM;
6406         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6407                              NL80211_CMD_GET_MESH_CONFIG);
6408         if (!hdr)
6409                 goto out;
6410         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6411         if (!pinfoattr)
6412                 goto nla_put_failure;
6413         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6414             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6415                         cur_params.dot11MeshRetryTimeout) ||
6416             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6417                         cur_params.dot11MeshConfirmTimeout) ||
6418             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6419                         cur_params.dot11MeshHoldingTimeout) ||
6420             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6421                         cur_params.dot11MeshMaxPeerLinks) ||
6422             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6423                        cur_params.dot11MeshMaxRetries) ||
6424             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6425                        cur_params.dot11MeshTTL) ||
6426             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6427                        cur_params.element_ttl) ||
6428             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6429                        cur_params.auto_open_plinks) ||
6430             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6431                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6432             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6433                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6434             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6435                         cur_params.path_refresh_time) ||
6436             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6437                         cur_params.min_discovery_timeout) ||
6438             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6439                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6440             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6441                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6442             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6443                         cur_params.dot11MeshHWMPperrMinInterval) ||
6444             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6445                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6446             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6447                        cur_params.dot11MeshHWMPRootMode) ||
6448             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6449                         cur_params.dot11MeshHWMPRannInterval) ||
6450             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6451                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6452             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6453                        cur_params.dot11MeshForwarding) ||
6454             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6455                         cur_params.rssi_threshold) ||
6456             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6457                         cur_params.ht_opmode) ||
6458             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6459                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6460             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6461                         cur_params.dot11MeshHWMProotInterval) ||
6462             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6463                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6464             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6465                         cur_params.power_mode) ||
6466             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6467                         cur_params.dot11MeshAwakeWindowDuration) ||
6468             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6469                         cur_params.plink_timeout) ||
6470             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6471                        cur_params.dot11MeshConnectedToMeshGate))
6472                 goto nla_put_failure;
6473         nla_nest_end(msg, pinfoattr);
6474         genlmsg_end(msg, hdr);
6475         return genlmsg_reply(msg, info);
6476
6477  nla_put_failure:
6478  out:
6479         nlmsg_free(msg);
6480         return -ENOBUFS;
6481 }
6482
6483 static const struct nla_policy
6484 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6485         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6486                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6487         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6488                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6489         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6490                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6491         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6492                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6493         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6494         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6495         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6496         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6497         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6498                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6499         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6500         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6501         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6502         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6503         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6504                 NLA_POLICY_MIN(NLA_U16, 1),
6505         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6506                 NLA_POLICY_MIN(NLA_U16, 1),
6507         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6508                 NLA_POLICY_MIN(NLA_U16, 1),
6509         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6510         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6511                 NLA_POLICY_MIN(NLA_U16, 1),
6512         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6513         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6514         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6515                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6516         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6517         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6518         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6519                 NLA_POLICY_MIN(NLA_U16, 1),
6520         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6521                 NLA_POLICY_MIN(NLA_U16, 1),
6522         [NL80211_MESHCONF_POWER_MODE] =
6523                 NLA_POLICY_RANGE(NLA_U32,
6524                                  NL80211_MESH_POWER_ACTIVE,
6525                                  NL80211_MESH_POWER_MAX),
6526         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6527         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6528         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6529 };
6530
6531 static const struct nla_policy
6532         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6533         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6534         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6535         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6536         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6537         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6538         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6539         [NL80211_MESH_SETUP_IE] =
6540                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6541                                        IEEE80211_MAX_DATA_LEN),
6542         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6543 };
6544
6545 static int nl80211_parse_mesh_config(struct genl_info *info,
6546                                      struct mesh_config *cfg,
6547                                      u32 *mask_out)
6548 {
6549         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6550         u32 mask = 0;
6551         u16 ht_opmode;
6552
6553 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6554 do {                                                                    \
6555         if (tb[attr]) {                                                 \
6556                 cfg->param = fn(tb[attr]);                              \
6557                 mask |= BIT((attr) - 1);                                \
6558         }                                                               \
6559 } while (0)
6560
6561         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6562                 return -EINVAL;
6563         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6564                 return -EINVAL;
6565
6566         /* This makes sure that there aren't more than 32 mesh config
6567          * parameters (otherwise our bitfield scheme would not work.) */
6568         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6569
6570         /* Fill in the params struct */
6571         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6572                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6573         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6574                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6575                                   nla_get_u16);
6576         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6577                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6578                                   nla_get_u16);
6579         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6580                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6581                                   nla_get_u16);
6582         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6583                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6584         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6585                                   NL80211_MESHCONF_TTL, nla_get_u8);
6586         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6587                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6588         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6589                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6590                                   nla_get_u8);
6591         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6592                                   mask,
6593                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6594                                   nla_get_u32);
6595         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6596                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6597                                   nla_get_u8);
6598         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6599                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6600                                   nla_get_u32);
6601         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6602             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6603                 return -EINVAL;
6604         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6605                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6606                                   nla_get_u16);
6607         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6608                                   mask,
6609                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6610                                   nla_get_u32);
6611         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6612             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6613              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6614                 return -EINVAL;
6615         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6616                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6617                                   nla_get_u16);
6618         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6619                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6620                                   nla_get_u16);
6621         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6622                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6623                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6624                                   nla_get_u16);
6625         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6626                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6627         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6628                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6629                                   nla_get_u16);
6630         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6631                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6632                                   nla_get_u8);
6633         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6634                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6635         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6636                                   NL80211_MESHCONF_RSSI_THRESHOLD,
6637                                   nla_get_s32);
6638         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6639                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
6640                                   nla_get_u8);
6641         /*
6642          * Check HT operation mode based on
6643          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6644          */
6645         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6646                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6647
6648                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6649                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6650                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6651                         return -EINVAL;
6652
6653                 /* NON_HT_STA bit is reserved, but some programs set it */
6654                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6655
6656                 cfg->ht_opmode = ht_opmode;
6657                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6658         }
6659         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6660                                   dot11MeshHWMPactivePathToRootTimeout, mask,
6661                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6662                                   nla_get_u32);
6663         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6664             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6665              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6666                 return -EINVAL;
6667         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6668                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6669                                   nla_get_u16);
6670         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6671                                   mask,
6672                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6673                                   nla_get_u16);
6674         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6675                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6676         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6677                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6678         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6679                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6680         if (mask_out)
6681                 *mask_out = mask;
6682
6683         return 0;
6684
6685 #undef FILL_IN_MESH_PARAM_IF_SET
6686 }
6687
6688 static int nl80211_parse_mesh_setup(struct genl_info *info,
6689                                      struct mesh_setup *setup)
6690 {
6691         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6692         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6693
6694         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6695                 return -EINVAL;
6696         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
6697                 return -EINVAL;
6698
6699         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6700                 setup->sync_method =
6701                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6702                  IEEE80211_SYNC_METHOD_VENDOR :
6703                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6704
6705         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6706                 setup->path_sel_proto =
6707                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6708                  IEEE80211_PATH_PROTOCOL_VENDOR :
6709                  IEEE80211_PATH_PROTOCOL_HWMP;
6710
6711         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6712                 setup->path_metric =
6713                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6714                  IEEE80211_PATH_METRIC_VENDOR :
6715                  IEEE80211_PATH_METRIC_AIRTIME;
6716
6717         if (tb[NL80211_MESH_SETUP_IE]) {
6718                 struct nlattr *ieattr =
6719                         tb[NL80211_MESH_SETUP_IE];
6720                 setup->ie = nla_data(ieattr);
6721                 setup->ie_len = nla_len(ieattr);
6722         }
6723         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6724             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6725                 return -EINVAL;
6726         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6727         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6728         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6729         if (setup->is_secure)
6730                 setup->user_mpm = true;
6731
6732         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6733                 if (!setup->user_mpm)
6734                         return -EINVAL;
6735                 setup->auth_id =
6736                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6737         }
6738
6739         return 0;
6740 }
6741
6742 static int nl80211_update_mesh_config(struct sk_buff *skb,
6743                                       struct genl_info *info)
6744 {
6745         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6746         struct net_device *dev = info->user_ptr[1];
6747         struct wireless_dev *wdev = dev->ieee80211_ptr;
6748         struct mesh_config cfg;
6749         u32 mask;
6750         int err;
6751
6752         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6753                 return -EOPNOTSUPP;
6754
6755         if (!rdev->ops->update_mesh_config)
6756                 return -EOPNOTSUPP;
6757
6758         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6759         if (err)
6760                 return err;
6761
6762         wdev_lock(wdev);
6763         if (!wdev->mesh_id_len)
6764                 err = -ENOLINK;
6765
6766         if (!err)
6767                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6768
6769         wdev_unlock(wdev);
6770
6771         return err;
6772 }
6773
6774 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6775                               struct sk_buff *msg)
6776 {
6777         struct nlattr *nl_reg_rules;
6778         unsigned int i;
6779
6780         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6781             (regdom->dfs_region &&
6782              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6783                 goto nla_put_failure;
6784
6785         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
6786         if (!nl_reg_rules)
6787                 goto nla_put_failure;
6788
6789         for (i = 0; i < regdom->n_reg_rules; i++) {
6790                 struct nlattr *nl_reg_rule;
6791                 const struct ieee80211_reg_rule *reg_rule;
6792                 const struct ieee80211_freq_range *freq_range;
6793                 const struct ieee80211_power_rule *power_rule;
6794                 unsigned int max_bandwidth_khz;
6795
6796                 reg_rule = &regdom->reg_rules[i];
6797                 freq_range = &reg_rule->freq_range;
6798                 power_rule = &reg_rule->power_rule;
6799
6800                 nl_reg_rule = nla_nest_start_noflag(msg, i);
6801                 if (!nl_reg_rule)
6802                         goto nla_put_failure;
6803
6804                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6805                 if (!max_bandwidth_khz)
6806                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6807                                                                   reg_rule);
6808
6809                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6810                                 reg_rule->flags) ||
6811                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6812                                 freq_range->start_freq_khz) ||
6813                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6814                                 freq_range->end_freq_khz) ||
6815                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6816                                 max_bandwidth_khz) ||
6817                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6818                                 power_rule->max_antenna_gain) ||
6819                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6820                                 power_rule->max_eirp) ||
6821                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6822                                 reg_rule->dfs_cac_ms))
6823                         goto nla_put_failure;
6824
6825                 nla_nest_end(msg, nl_reg_rule);
6826         }
6827
6828         nla_nest_end(msg, nl_reg_rules);
6829         return 0;
6830
6831 nla_put_failure:
6832         return -EMSGSIZE;
6833 }
6834
6835 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6836 {
6837         const struct ieee80211_regdomain *regdom = NULL;
6838         struct cfg80211_registered_device *rdev;
6839         struct wiphy *wiphy = NULL;
6840         struct sk_buff *msg;
6841         void *hdr;
6842
6843         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6844         if (!msg)
6845                 return -ENOBUFS;
6846
6847         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6848                              NL80211_CMD_GET_REG);
6849         if (!hdr)
6850                 goto put_failure;
6851
6852         if (info->attrs[NL80211_ATTR_WIPHY]) {
6853                 bool self_managed;
6854
6855                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6856                 if (IS_ERR(rdev)) {
6857                         nlmsg_free(msg);
6858                         return PTR_ERR(rdev);
6859                 }
6860
6861                 wiphy = &rdev->wiphy;
6862                 self_managed = wiphy->regulatory_flags &
6863                                REGULATORY_WIPHY_SELF_MANAGED;
6864                 regdom = get_wiphy_regdom(wiphy);
6865
6866                 /* a self-managed-reg device must have a private regdom */
6867                 if (WARN_ON(!regdom && self_managed)) {
6868                         nlmsg_free(msg);
6869                         return -EINVAL;
6870                 }
6871
6872                 if (regdom &&
6873                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6874                         goto nla_put_failure;
6875         }
6876
6877         if (!wiphy && reg_last_request_cell_base() &&
6878             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6879                         NL80211_USER_REG_HINT_CELL_BASE))
6880                 goto nla_put_failure;
6881
6882         rcu_read_lock();
6883
6884         if (!regdom)
6885                 regdom = rcu_dereference(cfg80211_regdomain);
6886
6887         if (nl80211_put_regdom(regdom, msg))
6888                 goto nla_put_failure_rcu;
6889
6890         rcu_read_unlock();
6891
6892         genlmsg_end(msg, hdr);
6893         return genlmsg_reply(msg, info);
6894
6895 nla_put_failure_rcu:
6896         rcu_read_unlock();
6897 nla_put_failure:
6898 put_failure:
6899         nlmsg_free(msg);
6900         return -EMSGSIZE;
6901 }
6902
6903 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6904                                u32 seq, int flags, struct wiphy *wiphy,
6905                                const struct ieee80211_regdomain *regdom)
6906 {
6907         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6908                                    NL80211_CMD_GET_REG);
6909
6910         if (!hdr)
6911                 return -1;
6912
6913         genl_dump_check_consistent(cb, hdr);
6914
6915         if (nl80211_put_regdom(regdom, msg))
6916                 goto nla_put_failure;
6917
6918         if (!wiphy && reg_last_request_cell_base() &&
6919             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6920                         NL80211_USER_REG_HINT_CELL_BASE))
6921                 goto nla_put_failure;
6922
6923         if (wiphy &&
6924             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6925                 goto nla_put_failure;
6926
6927         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6928             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6929                 goto nla_put_failure;
6930
6931         genlmsg_end(msg, hdr);
6932         return 0;
6933
6934 nla_put_failure:
6935         genlmsg_cancel(msg, hdr);
6936         return -EMSGSIZE;
6937 }
6938
6939 static int nl80211_get_reg_dump(struct sk_buff *skb,
6940                                 struct netlink_callback *cb)
6941 {
6942         const struct ieee80211_regdomain *regdom = NULL;
6943         struct cfg80211_registered_device *rdev;
6944         int err, reg_idx, start = cb->args[2];
6945
6946         rtnl_lock();
6947
6948         if (cfg80211_regdomain && start == 0) {
6949                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6950                                           NLM_F_MULTI, NULL,
6951                                           rtnl_dereference(cfg80211_regdomain));
6952                 if (err < 0)
6953                         goto out_err;
6954         }
6955
6956         /* the global regdom is idx 0 */
6957         reg_idx = 1;
6958         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6959                 regdom = get_wiphy_regdom(&rdev->wiphy);
6960                 if (!regdom)
6961                         continue;
6962
6963                 if (++reg_idx <= start)
6964                         continue;
6965
6966                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6967                                           NLM_F_MULTI, &rdev->wiphy, regdom);
6968                 if (err < 0) {
6969                         reg_idx--;
6970                         break;
6971                 }
6972         }
6973
6974         cb->args[2] = reg_idx;
6975         err = skb->len;
6976 out_err:
6977         rtnl_unlock();
6978         return err;
6979 }
6980
6981 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6982 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6983         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
6984         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
6985         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
6986         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
6987         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
6988         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
6989         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
6990 };
6991
6992 static int parse_reg_rule(struct nlattr *tb[],
6993         struct ieee80211_reg_rule *reg_rule)
6994 {
6995         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6996         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6997
6998         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6999                 return -EINVAL;
7000         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7001                 return -EINVAL;
7002         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7003                 return -EINVAL;
7004         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7005                 return -EINVAL;
7006         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7007                 return -EINVAL;
7008
7009         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7010
7011         freq_range->start_freq_khz =
7012                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7013         freq_range->end_freq_khz =
7014                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7015         freq_range->max_bandwidth_khz =
7016                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7017
7018         power_rule->max_eirp =
7019                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7020
7021         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7022                 power_rule->max_antenna_gain =
7023                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7024
7025         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7026                 reg_rule->dfs_cac_ms =
7027                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7028
7029         return 0;
7030 }
7031
7032 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7033 {
7034         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7035         struct nlattr *nl_reg_rule;
7036         char *alpha2;
7037         int rem_reg_rules, r;
7038         u32 num_rules = 0, rule_idx = 0;
7039         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7040         struct ieee80211_regdomain *rd;
7041
7042         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7043                 return -EINVAL;
7044
7045         if (!info->attrs[NL80211_ATTR_REG_RULES])
7046                 return -EINVAL;
7047
7048         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7049
7050         if (info->attrs[NL80211_ATTR_DFS_REGION])
7051                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7052
7053         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7054                             rem_reg_rules) {
7055                 num_rules++;
7056                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7057                         return -EINVAL;
7058         }
7059
7060         if (!reg_is_valid_request(alpha2))
7061                 return -EINVAL;
7062
7063         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7064         if (!rd)
7065                 return -ENOMEM;
7066
7067         rd->n_reg_rules = num_rules;
7068         rd->alpha2[0] = alpha2[0];
7069         rd->alpha2[1] = alpha2[1];
7070
7071         /*
7072          * Disable DFS master mode if the DFS region was
7073          * not supported or known on this kernel.
7074          */
7075         if (reg_supported_dfs_region(dfs_region))
7076                 rd->dfs_region = dfs_region;
7077
7078         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7079                             rem_reg_rules) {
7080                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7081                                                 nl_reg_rule, reg_rule_policy,
7082                                                 info->extack);
7083                 if (r)
7084                         goto bad_reg;
7085                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7086                 if (r)
7087                         goto bad_reg;
7088
7089                 rule_idx++;
7090
7091                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7092                         r = -EINVAL;
7093                         goto bad_reg;
7094                 }
7095         }
7096
7097         /* set_regdom takes ownership of rd */
7098         return set_regdom(rd, REGD_SOURCE_CRDA);
7099  bad_reg:
7100         kfree(rd);
7101         return r;
7102 }
7103 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7104
7105 static int validate_scan_freqs(struct nlattr *freqs)
7106 {
7107         struct nlattr *attr1, *attr2;
7108         int n_channels = 0, tmp1, tmp2;
7109
7110         nla_for_each_nested(attr1, freqs, tmp1)
7111                 if (nla_len(attr1) != sizeof(u32))
7112                         return 0;
7113
7114         nla_for_each_nested(attr1, freqs, tmp1) {
7115                 n_channels++;
7116                 /*
7117                  * Some hardware has a limited channel list for
7118                  * scanning, and it is pretty much nonsensical
7119                  * to scan for a channel twice, so disallow that
7120                  * and don't require drivers to check that the
7121                  * channel list they get isn't longer than what
7122                  * they can scan, as long as they can scan all
7123                  * the channels they registered at once.
7124                  */
7125                 nla_for_each_nested(attr2, freqs, tmp2)
7126                         if (attr1 != attr2 &&
7127                             nla_get_u32(attr1) == nla_get_u32(attr2))
7128                                 return 0;
7129         }
7130
7131         return n_channels;
7132 }
7133
7134 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7135 {
7136         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7137 }
7138
7139 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7140                             struct cfg80211_bss_selection *bss_select)
7141 {
7142         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7143         struct nlattr *nest;
7144         int err;
7145         bool found = false;
7146         int i;
7147
7148         /* only process one nested attribute */
7149         nest = nla_data(nla);
7150         if (!nla_ok(nest, nla_len(nest)))
7151                 return -EINVAL;
7152
7153         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7154                                           nest, nl80211_bss_select_policy,
7155                                           NULL);
7156         if (err)
7157                 return err;
7158
7159         /* only one attribute may be given */
7160         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7161                 if (attr[i]) {
7162                         if (found)
7163                                 return -EINVAL;
7164                         found = true;
7165                 }
7166         }
7167
7168         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7169
7170         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7171                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7172
7173         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7174                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7175                 bss_select->param.band_pref =
7176                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7177                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7178                         return -EINVAL;
7179         }
7180
7181         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7182                 struct nl80211_bss_select_rssi_adjust *adj_param;
7183
7184                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7185                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7186                 bss_select->param.adjust.band = adj_param->band;
7187                 bss_select->param.adjust.delta = adj_param->delta;
7188                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7189                         return -EINVAL;
7190         }
7191
7192         /* user-space did not provide behaviour attribute */
7193         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7194                 return -EINVAL;
7195
7196         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7197                 return -EINVAL;
7198
7199         return 0;
7200 }
7201
7202 int nl80211_parse_random_mac(struct nlattr **attrs,
7203                              u8 *mac_addr, u8 *mac_addr_mask)
7204 {
7205         int i;
7206
7207         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7208                 eth_zero_addr(mac_addr);
7209                 eth_zero_addr(mac_addr_mask);
7210                 mac_addr[0] = 0x2;
7211                 mac_addr_mask[0] = 0x3;
7212
7213                 return 0;
7214         }
7215
7216         /* need both or none */
7217         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7218                 return -EINVAL;
7219
7220         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7221         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7222
7223         /* don't allow or configure an mcast address */
7224         if (!is_multicast_ether_addr(mac_addr_mask) ||
7225             is_multicast_ether_addr(mac_addr))
7226                 return -EINVAL;
7227
7228         /*
7229          * allow users to pass a MAC address that has bits set outside
7230          * of the mask, but don't bother drivers with having to deal
7231          * with such bits
7232          */
7233         for (i = 0; i < ETH_ALEN; i++)
7234                 mac_addr[i] &= mac_addr_mask[i];
7235
7236         return 0;
7237 }
7238
7239 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7240 {
7241         ASSERT_WDEV_LOCK(wdev);
7242
7243         if (!cfg80211_beaconing_iface_active(wdev))
7244                 return true;
7245
7246         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7247                 return true;
7248
7249         return regulatory_pre_cac_allowed(wdev->wiphy);
7250 }
7251
7252 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7253                                     enum nl80211_ext_feature_index feat)
7254 {
7255         if (!(flags & flag))
7256                 return true;
7257         if (wiphy_ext_feature_isset(wiphy, feat))
7258                 return true;
7259         return false;
7260 }
7261
7262 static int
7263 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7264                          void *request, struct nlattr **attrs,
7265                          bool is_sched_scan)
7266 {
7267         u8 *mac_addr, *mac_addr_mask;
7268         u32 *flags;
7269         enum nl80211_feature_flags randomness_flag;
7270
7271         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7272                 return 0;
7273
7274         if (is_sched_scan) {
7275                 struct cfg80211_sched_scan_request *req = request;
7276
7277                 randomness_flag = wdev ?
7278                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7279                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7280                 flags = &req->flags;
7281                 mac_addr = req->mac_addr;
7282                 mac_addr_mask = req->mac_addr_mask;
7283         } else {
7284                 struct cfg80211_scan_request *req = request;
7285
7286                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7287                 flags = &req->flags;
7288                 mac_addr = req->mac_addr;
7289                 mac_addr_mask = req->mac_addr_mask;
7290         }
7291
7292         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7293
7294         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7295              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7296             !nl80211_check_scan_feat(wiphy, *flags,
7297                                      NL80211_SCAN_FLAG_LOW_SPAN,
7298                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7299             !nl80211_check_scan_feat(wiphy, *flags,
7300                                      NL80211_SCAN_FLAG_LOW_POWER,
7301                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7302             !nl80211_check_scan_feat(wiphy, *flags,
7303                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7304                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7305             !nl80211_check_scan_feat(wiphy, *flags,
7306                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7307                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7308             !nl80211_check_scan_feat(wiphy, *flags,
7309                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7310                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7311             !nl80211_check_scan_feat(wiphy, *flags,
7312                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7313                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7314             !nl80211_check_scan_feat(wiphy, *flags,
7315                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7316                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7317             !nl80211_check_scan_feat(wiphy, *flags,
7318                                      NL80211_SCAN_FLAG_RANDOM_SN,
7319                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7320             !nl80211_check_scan_feat(wiphy, *flags,
7321                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7322                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7323                 return -EOPNOTSUPP;
7324
7325         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7326                 int err;
7327
7328                 if (!(wiphy->features & randomness_flag) ||
7329                     (wdev && wdev->current_bss))
7330                         return -EOPNOTSUPP;
7331
7332                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7333                 if (err)
7334                         return err;
7335         }
7336
7337         return 0;
7338 }
7339
7340 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7341 {
7342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7343         struct wireless_dev *wdev = info->user_ptr[1];
7344         struct cfg80211_scan_request *request;
7345         struct nlattr *attr;
7346         struct wiphy *wiphy;
7347         int err, tmp, n_ssids = 0, n_channels, i;
7348         size_t ie_len;
7349
7350         wiphy = &rdev->wiphy;
7351
7352         if (wdev->iftype == NL80211_IFTYPE_NAN)
7353                 return -EOPNOTSUPP;
7354
7355         if (!rdev->ops->scan)
7356                 return -EOPNOTSUPP;
7357
7358         if (rdev->scan_req || rdev->scan_msg) {
7359                 err = -EBUSY;
7360                 goto unlock;
7361         }
7362
7363         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7364                 n_channels = validate_scan_freqs(
7365                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7366                 if (!n_channels) {
7367                         err = -EINVAL;
7368                         goto unlock;
7369                 }
7370         } else {
7371                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7372         }
7373
7374         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7375                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7376                         n_ssids++;
7377
7378         if (n_ssids > wiphy->max_scan_ssids) {
7379                 err = -EINVAL;
7380                 goto unlock;
7381         }
7382
7383         if (info->attrs[NL80211_ATTR_IE])
7384                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7385         else
7386                 ie_len = 0;
7387
7388         if (ie_len > wiphy->max_scan_ie_len) {
7389                 err = -EINVAL;
7390                 goto unlock;
7391         }
7392
7393         request = kzalloc(sizeof(*request)
7394                         + sizeof(*request->ssids) * n_ssids
7395                         + sizeof(*request->channels) * n_channels
7396                         + ie_len, GFP_KERNEL);
7397         if (!request) {
7398                 err = -ENOMEM;
7399                 goto unlock;
7400         }
7401
7402         if (n_ssids)
7403                 request->ssids = (void *)&request->channels[n_channels];
7404         request->n_ssids = n_ssids;
7405         if (ie_len) {
7406                 if (n_ssids)
7407                         request->ie = (void *)(request->ssids + n_ssids);
7408                 else
7409                         request->ie = (void *)(request->channels + n_channels);
7410         }
7411
7412         i = 0;
7413         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7414                 /* user specified, bail out if channel not found */
7415                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7416                         struct ieee80211_channel *chan;
7417
7418                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7419
7420                         if (!chan) {
7421                                 err = -EINVAL;
7422                                 goto out_free;
7423                         }
7424
7425                         /* ignore disabled channels */
7426                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7427                                 continue;
7428
7429                         request->channels[i] = chan;
7430                         i++;
7431                 }
7432         } else {
7433                 enum nl80211_band band;
7434
7435                 /* all channels */
7436                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7437                         int j;
7438
7439                         if (!wiphy->bands[band])
7440                                 continue;
7441                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7442                                 struct ieee80211_channel *chan;
7443
7444                                 chan = &wiphy->bands[band]->channels[j];
7445
7446                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7447                                         continue;
7448
7449                                 request->channels[i] = chan;
7450                                 i++;
7451                         }
7452                 }
7453         }
7454
7455         if (!i) {
7456                 err = -EINVAL;
7457                 goto out_free;
7458         }
7459
7460         request->n_channels = i;
7461
7462         wdev_lock(wdev);
7463         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7464                 struct ieee80211_channel *chan;
7465
7466                 if (request->n_channels != 1) {
7467                         wdev_unlock(wdev);
7468                         err = -EBUSY;
7469                         goto out_free;
7470                 }
7471
7472                 chan = request->channels[0];
7473                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7474                         wdev_unlock(wdev);
7475                         err = -EBUSY;
7476                         goto out_free;
7477                 }
7478         }
7479         wdev_unlock(wdev);
7480
7481         i = 0;
7482         if (n_ssids) {
7483                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7484                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7485                                 err = -EINVAL;
7486                                 goto out_free;
7487                         }
7488                         request->ssids[i].ssid_len = nla_len(attr);
7489                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7490                         i++;
7491                 }
7492         }
7493
7494         if (info->attrs[NL80211_ATTR_IE]) {
7495                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7496                 memcpy((void *)request->ie,
7497                        nla_data(info->attrs[NL80211_ATTR_IE]),
7498                        request->ie_len);
7499         }
7500
7501         for (i = 0; i < NUM_NL80211_BANDS; i++)
7502                 if (wiphy->bands[i])
7503                         request->rates[i] =
7504                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7505
7506         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7507                 nla_for_each_nested(attr,
7508                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7509                                     tmp) {
7510                         enum nl80211_band band = nla_type(attr);
7511
7512                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7513                                 err = -EINVAL;
7514                                 goto out_free;
7515                         }
7516
7517                         if (!wiphy->bands[band])
7518                                 continue;
7519
7520                         err = ieee80211_get_ratemask(wiphy->bands[band],
7521                                                      nla_data(attr),
7522                                                      nla_len(attr),
7523                                                      &request->rates[band]);
7524                         if (err)
7525                                 goto out_free;
7526                 }
7527         }
7528
7529         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7530                 if (!wiphy_ext_feature_isset(wiphy,
7531                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7532                         err = -EOPNOTSUPP;
7533                         goto out_free;
7534                 }
7535
7536                 request->duration =
7537                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7538                 request->duration_mandatory =
7539                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7540         }
7541
7542         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7543                                        false);
7544         if (err)
7545                 goto out_free;
7546
7547         request->no_cck =
7548                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7549
7550         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7551          * BSSID to scan for. This was problematic because that same attribute
7552          * was already used for another purpose (local random MAC address). The
7553          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7554          * compatibility with older userspace components, also use the
7555          * NL80211_ATTR_MAC value here if it can be determined to be used for
7556          * the specific BSSID use case instead of the random MAC address
7557          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7558          */
7559         if (info->attrs[NL80211_ATTR_BSSID])
7560                 memcpy(request->bssid,
7561                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7562         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7563                  info->attrs[NL80211_ATTR_MAC])
7564                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7565                        ETH_ALEN);
7566         else
7567                 eth_broadcast_addr(request->bssid);
7568
7569         request->wdev = wdev;
7570         request->wiphy = &rdev->wiphy;
7571         request->scan_start = jiffies;
7572
7573         rdev->scan_req = request;
7574         err = rdev_scan(rdev, request);
7575
7576         if (!err) {
7577                 nl80211_send_scan_start(rdev, wdev);
7578                 if (wdev->netdev)
7579                         dev_hold(wdev->netdev);
7580         } else {
7581  out_free:
7582                 rdev->scan_req = NULL;
7583                 kfree(request);
7584         }
7585
7586  unlock:
7587         return err;
7588 }
7589
7590 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7591 {
7592         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7593         struct wireless_dev *wdev = info->user_ptr[1];
7594
7595         if (!rdev->ops->abort_scan)
7596                 return -EOPNOTSUPP;
7597
7598         if (rdev->scan_msg)
7599                 return 0;
7600
7601         if (!rdev->scan_req)
7602                 return -ENOENT;
7603
7604         rdev_abort_scan(rdev, wdev);
7605         return 0;
7606 }
7607
7608 static int
7609 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7610                                struct cfg80211_sched_scan_request *request,
7611                                struct nlattr **attrs)
7612 {
7613         int tmp, err, i = 0;
7614         struct nlattr *attr;
7615
7616         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7617                 u32 interval;
7618
7619                 /*
7620                  * If scan plans are not specified,
7621                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7622                  * case one scan plan will be set with the specified scan
7623                  * interval and infinite number of iterations.
7624                  */
7625                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7626                 if (!interval)
7627                         return -EINVAL;
7628
7629                 request->scan_plans[0].interval =
7630                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7631                 if (!request->scan_plans[0].interval)
7632                         return -EINVAL;
7633
7634                 if (request->scan_plans[0].interval >
7635                     wiphy->max_sched_scan_plan_interval)
7636                         request->scan_plans[0].interval =
7637                                 wiphy->max_sched_scan_plan_interval;
7638
7639                 return 0;
7640         }
7641
7642         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7643                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7644
7645                 if (WARN_ON(i >= n_plans))
7646                         return -EINVAL;
7647
7648                 err = nla_parse_nested_deprecated(plan,
7649                                                   NL80211_SCHED_SCAN_PLAN_MAX,
7650                                                   attr, nl80211_plan_policy,
7651                                                   NULL);
7652                 if (err)
7653                         return err;
7654
7655                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7656                         return -EINVAL;
7657
7658                 request->scan_plans[i].interval =
7659                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7660                 if (!request->scan_plans[i].interval ||
7661                     request->scan_plans[i].interval >
7662                     wiphy->max_sched_scan_plan_interval)
7663                         return -EINVAL;
7664
7665                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7666                         request->scan_plans[i].iterations =
7667                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7668                         if (!request->scan_plans[i].iterations ||
7669                             (request->scan_plans[i].iterations >
7670                              wiphy->max_sched_scan_plan_iterations))
7671                                 return -EINVAL;
7672                 } else if (i < n_plans - 1) {
7673                         /*
7674                          * All scan plans but the last one must specify
7675                          * a finite number of iterations
7676                          */
7677                         return -EINVAL;
7678                 }
7679
7680                 i++;
7681         }
7682
7683         /*
7684          * The last scan plan must not specify the number of
7685          * iterations, it is supposed to run infinitely
7686          */
7687         if (request->scan_plans[n_plans - 1].iterations)
7688                 return  -EINVAL;
7689
7690         return 0;
7691 }
7692
7693 static int
7694 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
7695                                        struct cfg80211_match_set *match_sets,
7696                                        struct nlattr *tb_band_rssi,
7697                                        s32 rssi_thold)
7698 {
7699         struct nlattr *attr;
7700         int i, tmp, ret = 0;
7701
7702         if (!wiphy_ext_feature_isset(wiphy,
7703                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
7704                 if (tb_band_rssi)
7705                         ret = -EOPNOTSUPP;
7706                 else
7707                         for (i = 0; i < NUM_NL80211_BANDS; i++)
7708                                 match_sets->per_band_rssi_thold[i] =
7709                                         NL80211_SCAN_RSSI_THOLD_OFF;
7710                 return ret;
7711         }
7712
7713         for (i = 0; i < NUM_NL80211_BANDS; i++)
7714                 match_sets->per_band_rssi_thold[i] = rssi_thold;
7715
7716         nla_for_each_nested(attr, tb_band_rssi, tmp) {
7717                 enum nl80211_band band = nla_type(attr);
7718
7719                 if (band < 0 || band >= NUM_NL80211_BANDS)
7720                         return -EINVAL;
7721
7722                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
7723         }
7724
7725         return 0;
7726 }
7727
7728 static struct cfg80211_sched_scan_request *
7729 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7730                          struct nlattr **attrs, int max_match_sets)
7731 {
7732         struct cfg80211_sched_scan_request *request;
7733         struct nlattr *attr;
7734         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7735         enum nl80211_band band;
7736         size_t ie_len;
7737         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7738         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7739
7740         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7741                 n_channels = validate_scan_freqs(
7742                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7743                 if (!n_channels)
7744                         return ERR_PTR(-EINVAL);
7745         } else {
7746                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7747         }
7748
7749         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7750                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7751                                     tmp)
7752                         n_ssids++;
7753
7754         if (n_ssids > wiphy->max_sched_scan_ssids)
7755                 return ERR_PTR(-EINVAL);
7756
7757         /*
7758          * First, count the number of 'real' matchsets. Due to an issue with
7759          * the old implementation, matchsets containing only the RSSI attribute
7760          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7761          * RSSI for all matchsets, rather than their own matchset for reporting
7762          * all APs with a strong RSSI. This is needed to be compatible with
7763          * older userspace that treated a matchset with only the RSSI as the
7764          * global RSSI for all other matchsets - if there are other matchsets.
7765          */
7766         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7767                 nla_for_each_nested(attr,
7768                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7769                                     tmp) {
7770                         struct nlattr *rssi;
7771
7772                         err = nla_parse_nested_deprecated(tb,
7773                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7774                                                           attr,
7775                                                           nl80211_match_policy,
7776                                                           NULL);
7777                         if (err)
7778                                 return ERR_PTR(err);
7779
7780                         /* SSID and BSSID are mutually exclusive */
7781                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7782                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7783                                 return ERR_PTR(-EINVAL);
7784
7785                         /* add other standalone attributes here */
7786                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7787                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7788                                 n_match_sets++;
7789                                 continue;
7790                         }
7791                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7792                         if (rssi)
7793                                 default_match_rssi = nla_get_s32(rssi);
7794                 }
7795         }
7796
7797         /* However, if there's no other matchset, add the RSSI one */
7798         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7799                 n_match_sets = 1;
7800
7801         if (n_match_sets > max_match_sets)
7802                 return ERR_PTR(-EINVAL);
7803
7804         if (attrs[NL80211_ATTR_IE])
7805                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7806         else
7807                 ie_len = 0;
7808
7809         if (ie_len > wiphy->max_sched_scan_ie_len)
7810                 return ERR_PTR(-EINVAL);
7811
7812         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7813                 /*
7814                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7815                  * each scan plan already specifies its own interval
7816                  */
7817                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7818                         return ERR_PTR(-EINVAL);
7819
7820                 nla_for_each_nested(attr,
7821                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7822                         n_plans++;
7823         } else {
7824                 /*
7825                  * The scan interval attribute is kept for backward
7826                  * compatibility. If no scan plans are specified and sched scan
7827                  * interval is specified, one scan plan will be set with this
7828                  * scan interval and infinite number of iterations.
7829                  */
7830                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7831                         return ERR_PTR(-EINVAL);
7832
7833                 n_plans = 1;
7834         }
7835
7836         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7837                 return ERR_PTR(-EINVAL);
7838
7839         if (!wiphy_ext_feature_isset(
7840                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7841             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7842              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7843                 return ERR_PTR(-EINVAL);
7844
7845         request = kzalloc(sizeof(*request)
7846                         + sizeof(*request->ssids) * n_ssids
7847                         + sizeof(*request->match_sets) * n_match_sets
7848                         + sizeof(*request->scan_plans) * n_plans
7849                         + sizeof(*request->channels) * n_channels
7850                         + ie_len, GFP_KERNEL);
7851         if (!request)
7852                 return ERR_PTR(-ENOMEM);
7853
7854         if (n_ssids)
7855                 request->ssids = (void *)&request->channels[n_channels];
7856         request->n_ssids = n_ssids;
7857         if (ie_len) {
7858                 if (n_ssids)
7859                         request->ie = (void *)(request->ssids + n_ssids);
7860                 else
7861                         request->ie = (void *)(request->channels + n_channels);
7862         }
7863
7864         if (n_match_sets) {
7865                 if (request->ie)
7866                         request->match_sets = (void *)(request->ie + ie_len);
7867                 else if (n_ssids)
7868                         request->match_sets =
7869                                 (void *)(request->ssids + n_ssids);
7870                 else
7871                         request->match_sets =
7872                                 (void *)(request->channels + n_channels);
7873         }
7874         request->n_match_sets = n_match_sets;
7875
7876         if (n_match_sets)
7877                 request->scan_plans = (void *)(request->match_sets +
7878                                                n_match_sets);
7879         else if (request->ie)
7880                 request->scan_plans = (void *)(request->ie + ie_len);
7881         else if (n_ssids)
7882                 request->scan_plans = (void *)(request->ssids + n_ssids);
7883         else
7884                 request->scan_plans = (void *)(request->channels + n_channels);
7885
7886         request->n_scan_plans = n_plans;
7887
7888         i = 0;
7889         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7890                 /* user specified, bail out if channel not found */
7891                 nla_for_each_nested(attr,
7892                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7893                                     tmp) {
7894                         struct ieee80211_channel *chan;
7895
7896                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7897
7898                         if (!chan) {
7899                                 err = -EINVAL;
7900                                 goto out_free;
7901                         }
7902
7903                         /* ignore disabled channels */
7904                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7905                                 continue;
7906
7907                         request->channels[i] = chan;
7908                         i++;
7909                 }
7910         } else {
7911                 /* all channels */
7912                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7913                         int j;
7914
7915                         if (!wiphy->bands[band])
7916                                 continue;
7917                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7918                                 struct ieee80211_channel *chan;
7919
7920                                 chan = &wiphy->bands[band]->channels[j];
7921
7922                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7923                                         continue;
7924
7925                                 request->channels[i] = chan;
7926                                 i++;
7927                         }
7928                 }
7929         }
7930
7931         if (!i) {
7932                 err = -EINVAL;
7933                 goto out_free;
7934         }
7935
7936         request->n_channels = i;
7937
7938         i = 0;
7939         if (n_ssids) {
7940                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7941                                     tmp) {
7942                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7943                                 err = -EINVAL;
7944                                 goto out_free;
7945                         }
7946                         request->ssids[i].ssid_len = nla_len(attr);
7947                         memcpy(request->ssids[i].ssid, nla_data(attr),
7948                                nla_len(attr));
7949                         i++;
7950                 }
7951         }
7952
7953         i = 0;
7954         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7955                 nla_for_each_nested(attr,
7956                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7957                                     tmp) {
7958                         struct nlattr *ssid, *bssid, *rssi;
7959
7960                         err = nla_parse_nested_deprecated(tb,
7961                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7962                                                           attr,
7963                                                           nl80211_match_policy,
7964                                                           NULL);
7965                         if (err)
7966                                 goto out_free;
7967                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7968                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7969
7970                         if (!ssid && !bssid) {
7971                                 i++;
7972                                 continue;
7973                         }
7974
7975                         if (WARN_ON(i >= n_match_sets)) {
7976                                 /* this indicates a programming error,
7977                                  * the loop above should have verified
7978                                  * things properly
7979                                  */
7980                                 err = -EINVAL;
7981                                 goto out_free;
7982                         }
7983
7984                         if (ssid) {
7985                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7986                                         err = -EINVAL;
7987                                         goto out_free;
7988                                 }
7989                                 memcpy(request->match_sets[i].ssid.ssid,
7990                                        nla_data(ssid), nla_len(ssid));
7991                                 request->match_sets[i].ssid.ssid_len =
7992                                         nla_len(ssid);
7993                         }
7994                         if (bssid) {
7995                                 if (nla_len(bssid) != ETH_ALEN) {
7996                                         err = -EINVAL;
7997                                         goto out_free;
7998                                 }
7999                                 memcpy(request->match_sets[i].bssid,
8000                                        nla_data(bssid), ETH_ALEN);
8001                         }
8002
8003                         /* special attribute - old implementation w/a */
8004                         request->match_sets[i].rssi_thold = default_match_rssi;
8005                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8006                         if (rssi)
8007                                 request->match_sets[i].rssi_thold =
8008                                         nla_get_s32(rssi);
8009
8010                         /* Parse per band RSSI attribute */
8011                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8012                                 &request->match_sets[i],
8013                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8014                                 request->match_sets[i].rssi_thold);
8015                         if (err)
8016                                 goto out_free;
8017
8018                         i++;
8019                 }
8020
8021                 /* there was no other matchset, so the RSSI one is alone */
8022                 if (i == 0 && n_match_sets)
8023                         request->match_sets[0].rssi_thold = default_match_rssi;
8024
8025                 request->min_rssi_thold = INT_MAX;
8026                 for (i = 0; i < n_match_sets; i++)
8027                         request->min_rssi_thold =
8028                                 min(request->match_sets[i].rssi_thold,
8029                                     request->min_rssi_thold);
8030         } else {
8031                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8032         }
8033
8034         if (ie_len) {
8035                 request->ie_len = ie_len;
8036                 memcpy((void *)request->ie,
8037                        nla_data(attrs[NL80211_ATTR_IE]),
8038                        request->ie_len);
8039         }
8040
8041         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8042         if (err)
8043                 goto out_free;
8044
8045         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8046                 request->delay =
8047                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8048
8049         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8050                 request->relative_rssi = nla_get_s8(
8051                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8052                 request->relative_rssi_set = true;
8053         }
8054
8055         if (request->relative_rssi_set &&
8056             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8057                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8058
8059                 rssi_adjust = nla_data(
8060                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8061                 request->rssi_adjust.band = rssi_adjust->band;
8062                 request->rssi_adjust.delta = rssi_adjust->delta;
8063                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8064                         err = -EINVAL;
8065                         goto out_free;
8066                 }
8067         }
8068
8069         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8070         if (err)
8071                 goto out_free;
8072
8073         request->scan_start = jiffies;
8074
8075         return request;
8076
8077 out_free:
8078         kfree(request);
8079         return ERR_PTR(err);
8080 }
8081
8082 static int nl80211_start_sched_scan(struct sk_buff *skb,
8083                                     struct genl_info *info)
8084 {
8085         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8086         struct net_device *dev = info->user_ptr[1];
8087         struct wireless_dev *wdev = dev->ieee80211_ptr;
8088         struct cfg80211_sched_scan_request *sched_scan_req;
8089         bool want_multi;
8090         int err;
8091
8092         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8093                 return -EOPNOTSUPP;
8094
8095         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8096         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8097         if (err)
8098                 return err;
8099
8100         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8101                                                   info->attrs,
8102                                                   rdev->wiphy.max_match_sets);
8103
8104         err = PTR_ERR_OR_ZERO(sched_scan_req);
8105         if (err)
8106                 goto out_err;
8107
8108         /* leave request id zero for legacy request
8109          * or if driver does not support multi-scheduled scan
8110          */
8111         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
8112                 while (!sched_scan_req->reqid)
8113                         sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8114         }
8115
8116         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8117         if (err)
8118                 goto out_free;
8119
8120         sched_scan_req->dev = dev;
8121         sched_scan_req->wiphy = &rdev->wiphy;
8122
8123         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8124                 sched_scan_req->owner_nlportid = info->snd_portid;
8125
8126         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8127
8128         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8129         return 0;
8130
8131 out_free:
8132         kfree(sched_scan_req);
8133 out_err:
8134         return err;
8135 }
8136
8137 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8138                                    struct genl_info *info)
8139 {
8140         struct cfg80211_sched_scan_request *req;
8141         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8142         u64 cookie;
8143
8144         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8145                 return -EOPNOTSUPP;
8146
8147         if (info->attrs[NL80211_ATTR_COOKIE]) {
8148                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8149                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8150         }
8151
8152         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8153                                      struct cfg80211_sched_scan_request,
8154                                      list);
8155         if (!req || req->reqid ||
8156             (req->owner_nlportid &&
8157              req->owner_nlportid != info->snd_portid))
8158                 return -ENOENT;
8159
8160         return cfg80211_stop_sched_scan_req(rdev, req, false);
8161 }
8162
8163 static int nl80211_start_radar_detection(struct sk_buff *skb,
8164                                          struct genl_info *info)
8165 {
8166         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8167         struct net_device *dev = info->user_ptr[1];
8168         struct wireless_dev *wdev = dev->ieee80211_ptr;
8169         struct wiphy *wiphy = wdev->wiphy;
8170         struct cfg80211_chan_def chandef;
8171         enum nl80211_dfs_regions dfs_region;
8172         unsigned int cac_time_ms;
8173         int err;
8174
8175         dfs_region = reg_get_dfs_region(wiphy);
8176         if (dfs_region == NL80211_DFS_UNSET)
8177                 return -EINVAL;
8178
8179         err = nl80211_parse_chandef(rdev, info, &chandef);
8180         if (err)
8181                 return err;
8182
8183         if (netif_carrier_ok(dev))
8184                 return -EBUSY;
8185
8186         if (wdev->cac_started)
8187                 return -EBUSY;
8188
8189         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8190         if (err < 0)
8191                 return err;
8192
8193         if (err == 0)
8194                 return -EINVAL;
8195
8196         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8197                 return -EINVAL;
8198
8199         /* CAC start is offloaded to HW and can't be started manually */
8200         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8201                 return -EOPNOTSUPP;
8202
8203         if (!rdev->ops->start_radar_detection)
8204                 return -EOPNOTSUPP;
8205
8206         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8207         if (WARN_ON(!cac_time_ms))
8208                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8209
8210         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8211         if (!err) {
8212                 wdev->chandef = chandef;
8213                 wdev->cac_started = true;
8214                 wdev->cac_start_time = jiffies;
8215                 wdev->cac_time_ms = cac_time_ms;
8216         }
8217         return err;
8218 }
8219
8220 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8221                                           struct genl_info *info)
8222 {
8223         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8224         struct net_device *dev = info->user_ptr[1];
8225         struct wireless_dev *wdev = dev->ieee80211_ptr;
8226         struct wiphy *wiphy = wdev->wiphy;
8227         struct cfg80211_chan_def chandef;
8228         enum nl80211_dfs_regions dfs_region;
8229         int err;
8230
8231         dfs_region = reg_get_dfs_region(wiphy);
8232         if (dfs_region == NL80211_DFS_UNSET) {
8233                 GENL_SET_ERR_MSG(info,
8234                                  "DFS Region is not set. Unexpected Radar indication");
8235                 return -EINVAL;
8236         }
8237
8238         err = nl80211_parse_chandef(rdev, info, &chandef);
8239         if (err) {
8240                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8241                 return err;
8242         }
8243
8244         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8245         if (err < 0) {
8246                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8247                 return err;
8248         }
8249
8250         if (err == 0) {
8251                 GENL_SET_ERR_MSG(info,
8252                                  "Unexpected Radar indication for chandef/iftype");
8253                 return -EINVAL;
8254         }
8255
8256         /* Do not process this notification if radar is already detected
8257          * by kernel on this channel, and return success.
8258          */
8259         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8260                 return 0;
8261
8262         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8263
8264         cfg80211_sched_dfs_chan_update(rdev);
8265
8266         rdev->radar_chandef = chandef;
8267
8268         /* Propagate this notification to other radios as well */
8269         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8270
8271         return 0;
8272 }
8273
8274 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8275 {
8276         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8277         struct net_device *dev = info->user_ptr[1];
8278         struct wireless_dev *wdev = dev->ieee80211_ptr;
8279         struct cfg80211_csa_settings params;
8280         /* csa_attrs is defined static to avoid waste of stack size - this
8281          * function is called under RTNL lock, so this should not be a problem.
8282          */
8283         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8284         int err;
8285         bool need_new_beacon = false;
8286         bool need_handle_dfs_flag = true;
8287         int len, i;
8288         u32 cs_count;
8289
8290         if (!rdev->ops->channel_switch ||
8291             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8292                 return -EOPNOTSUPP;
8293
8294         switch (dev->ieee80211_ptr->iftype) {
8295         case NL80211_IFTYPE_AP:
8296         case NL80211_IFTYPE_P2P_GO:
8297                 need_new_beacon = true;
8298                 /* For all modes except AP the handle_dfs flag needs to be
8299                  * supplied to tell the kernel that userspace will handle radar
8300                  * events when they happen. Otherwise a switch to a channel
8301                  * requiring DFS will be rejected.
8302                  */
8303                 need_handle_dfs_flag = false;
8304
8305                 /* useless if AP is not running */
8306                 if (!wdev->beacon_interval)
8307                         return -ENOTCONN;
8308                 break;
8309         case NL80211_IFTYPE_ADHOC:
8310                 if (!wdev->ssid_len)
8311                         return -ENOTCONN;
8312                 break;
8313         case NL80211_IFTYPE_MESH_POINT:
8314                 if (!wdev->mesh_id_len)
8315                         return -ENOTCONN;
8316                 break;
8317         default:
8318                 return -EOPNOTSUPP;
8319         }
8320
8321         memset(&params, 0, sizeof(params));
8322         params.beacon_csa.ftm_responder = -1;
8323
8324         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8325             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8326                 return -EINVAL;
8327
8328         /* only important for AP, IBSS and mesh create IEs internally */
8329         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8330                 return -EINVAL;
8331
8332         /* Even though the attribute is u32, the specification says
8333          * u8, so let's make sure we don't overflow.
8334          */
8335         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8336         if (cs_count > 255)
8337                 return -EINVAL;
8338
8339         params.count = cs_count;
8340
8341         if (!need_new_beacon)
8342                 goto skip_beacons;
8343
8344         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8345         if (err)
8346                 return err;
8347
8348         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8349                                           info->attrs[NL80211_ATTR_CSA_IES],
8350                                           nl80211_policy, info->extack);
8351         if (err)
8352                 return err;
8353
8354         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8355         if (err)
8356                 return err;
8357
8358         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8359                 return -EINVAL;
8360
8361         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8362         if (!len || (len % sizeof(u16)))
8363                 return -EINVAL;
8364
8365         params.n_counter_offsets_beacon = len / sizeof(u16);
8366         if (rdev->wiphy.max_num_csa_counters &&
8367             (params.n_counter_offsets_beacon >
8368              rdev->wiphy.max_num_csa_counters))
8369                 return -EINVAL;
8370
8371         params.counter_offsets_beacon =
8372                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8373
8374         /* sanity checks - counters should fit and be the same */
8375         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8376                 u16 offset = params.counter_offsets_beacon[i];
8377
8378                 if (offset >= params.beacon_csa.tail_len)
8379                         return -EINVAL;
8380
8381                 if (params.beacon_csa.tail[offset] != params.count)
8382                         return -EINVAL;
8383         }
8384
8385         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8386                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8387                 if (!len || (len % sizeof(u16)))
8388                         return -EINVAL;
8389
8390                 params.n_counter_offsets_presp = len / sizeof(u16);
8391                 if (rdev->wiphy.max_num_csa_counters &&
8392                     (params.n_counter_offsets_presp >
8393                      rdev->wiphy.max_num_csa_counters))
8394                         return -EINVAL;
8395
8396                 params.counter_offsets_presp =
8397                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8398
8399                 /* sanity checks - counters should fit and be the same */
8400                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8401                         u16 offset = params.counter_offsets_presp[i];
8402
8403                         if (offset >= params.beacon_csa.probe_resp_len)
8404                                 return -EINVAL;
8405
8406                         if (params.beacon_csa.probe_resp[offset] !=
8407                             params.count)
8408                                 return -EINVAL;
8409                 }
8410         }
8411
8412 skip_beacons:
8413         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8414         if (err)
8415                 return err;
8416
8417         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8418                                            wdev->iftype))
8419                 return -EINVAL;
8420
8421         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8422                                             &params.chandef,
8423                                             wdev->iftype);
8424         if (err < 0)
8425                 return err;
8426
8427         if (err > 0) {
8428                 params.radar_required = true;
8429                 if (need_handle_dfs_flag &&
8430                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8431                         return -EINVAL;
8432                 }
8433         }
8434
8435         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8436                 params.block_tx = true;
8437
8438         wdev_lock(wdev);
8439         err = rdev_channel_switch(rdev, dev, &params);
8440         wdev_unlock(wdev);
8441
8442         return err;
8443 }
8444
8445 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8446                             u32 seq, int flags,
8447                             struct cfg80211_registered_device *rdev,
8448                             struct wireless_dev *wdev,
8449                             struct cfg80211_internal_bss *intbss)
8450 {
8451         struct cfg80211_bss *res = &intbss->pub;
8452         const struct cfg80211_bss_ies *ies;
8453         void *hdr;
8454         struct nlattr *bss;
8455
8456         ASSERT_WDEV_LOCK(wdev);
8457
8458         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8459                              NL80211_CMD_NEW_SCAN_RESULTS);
8460         if (!hdr)
8461                 return -1;
8462
8463         genl_dump_check_consistent(cb, hdr);
8464
8465         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8466                 goto nla_put_failure;
8467         if (wdev->netdev &&
8468             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8469                 goto nla_put_failure;
8470         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8471                               NL80211_ATTR_PAD))
8472                 goto nla_put_failure;
8473
8474         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8475         if (!bss)
8476                 goto nla_put_failure;
8477         if ((!is_zero_ether_addr(res->bssid) &&
8478              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8479                 goto nla_put_failure;
8480
8481         rcu_read_lock();
8482         /* indicate whether we have probe response data or not */
8483         if (rcu_access_pointer(res->proberesp_ies) &&
8484             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8485                 goto fail_unlock_rcu;
8486
8487         /* this pointer prefers to be pointed to probe response data
8488          * but is always valid
8489          */
8490         ies = rcu_dereference(res->ies);
8491         if (ies) {
8492                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8493                                       NL80211_BSS_PAD))
8494                         goto fail_unlock_rcu;
8495                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8496                                         ies->len, ies->data))
8497                         goto fail_unlock_rcu;
8498         }
8499
8500         /* and this pointer is always (unless driver didn't know) beacon data */
8501         ies = rcu_dereference(res->beacon_ies);
8502         if (ies && ies->from_beacon) {
8503                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8504                                       NL80211_BSS_PAD))
8505                         goto fail_unlock_rcu;
8506                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8507                                         ies->len, ies->data))
8508                         goto fail_unlock_rcu;
8509         }
8510         rcu_read_unlock();
8511
8512         if (res->beacon_interval &&
8513             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8514                 goto nla_put_failure;
8515         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8516             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8517             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8518             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8519                         jiffies_to_msecs(jiffies - intbss->ts)))
8520                 goto nla_put_failure;
8521
8522         if (intbss->parent_tsf &&
8523             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8524                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8525              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8526                      intbss->parent_bssid)))
8527                 goto nla_put_failure;
8528
8529         if (intbss->ts_boottime &&
8530             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8531                               intbss->ts_boottime, NL80211_BSS_PAD))
8532                 goto nla_put_failure;
8533
8534         if (!nl80211_put_signal(msg, intbss->pub.chains,
8535                                 intbss->pub.chain_signal,
8536                                 NL80211_BSS_CHAIN_SIGNAL))
8537                 goto nla_put_failure;
8538
8539         switch (rdev->wiphy.signal_type) {
8540         case CFG80211_SIGNAL_TYPE_MBM:
8541                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8542                         goto nla_put_failure;
8543                 break;
8544         case CFG80211_SIGNAL_TYPE_UNSPEC:
8545                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8546                         goto nla_put_failure;
8547                 break;
8548         default:
8549                 break;
8550         }
8551
8552         switch (wdev->iftype) {
8553         case NL80211_IFTYPE_P2P_CLIENT:
8554         case NL80211_IFTYPE_STATION:
8555                 if (intbss == wdev->current_bss &&
8556                     nla_put_u32(msg, NL80211_BSS_STATUS,
8557                                 NL80211_BSS_STATUS_ASSOCIATED))
8558                         goto nla_put_failure;
8559                 break;
8560         case NL80211_IFTYPE_ADHOC:
8561                 if (intbss == wdev->current_bss &&
8562                     nla_put_u32(msg, NL80211_BSS_STATUS,
8563                                 NL80211_BSS_STATUS_IBSS_JOINED))
8564                         goto nla_put_failure;
8565                 break;
8566         default:
8567                 break;
8568         }
8569
8570         nla_nest_end(msg, bss);
8571
8572         genlmsg_end(msg, hdr);
8573         return 0;
8574
8575  fail_unlock_rcu:
8576         rcu_read_unlock();
8577  nla_put_failure:
8578         genlmsg_cancel(msg, hdr);
8579         return -EMSGSIZE;
8580 }
8581
8582 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8583 {
8584         struct cfg80211_registered_device *rdev;
8585         struct cfg80211_internal_bss *scan;
8586         struct wireless_dev *wdev;
8587         int start = cb->args[2], idx = 0;
8588         int err;
8589
8590         rtnl_lock();
8591         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8592         if (err) {
8593                 rtnl_unlock();
8594                 return err;
8595         }
8596
8597         wdev_lock(wdev);
8598         spin_lock_bh(&rdev->bss_lock);
8599
8600         /*
8601          * dump_scan will be called multiple times to break up the scan results
8602          * into multiple messages.  It is unlikely that any more bss-es will be
8603          * expired after the first call, so only call only call this on the
8604          * first dump_scan invocation.
8605          */
8606         if (start == 0)
8607                 cfg80211_bss_expire(rdev);
8608
8609         cb->seq = rdev->bss_generation;
8610
8611         list_for_each_entry(scan, &rdev->bss_list, list) {
8612                 if (++idx <= start)
8613                         continue;
8614                 if (nl80211_send_bss(skb, cb,
8615                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8616                                 rdev, wdev, scan) < 0) {
8617                         idx--;
8618                         break;
8619                 }
8620         }
8621
8622         spin_unlock_bh(&rdev->bss_lock);
8623         wdev_unlock(wdev);
8624
8625         cb->args[2] = idx;
8626         rtnl_unlock();
8627
8628         return skb->len;
8629 }
8630
8631 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8632                                int flags, struct net_device *dev,
8633                                bool allow_radio_stats,
8634                                struct survey_info *survey)
8635 {
8636         void *hdr;
8637         struct nlattr *infoattr;
8638
8639         /* skip radio stats if userspace didn't request them */
8640         if (!survey->channel && !allow_radio_stats)
8641                 return 0;
8642
8643         hdr = nl80211hdr_put(msg, portid, seq, flags,
8644                              NL80211_CMD_NEW_SURVEY_RESULTS);
8645         if (!hdr)
8646                 return -ENOMEM;
8647
8648         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8649                 goto nla_put_failure;
8650
8651         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
8652         if (!infoattr)
8653                 goto nla_put_failure;
8654
8655         if (survey->channel &&
8656             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8657                         survey->channel->center_freq))
8658                 goto nla_put_failure;
8659
8660         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8661             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8662                 goto nla_put_failure;
8663         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8664             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8665                 goto nla_put_failure;
8666         if ((survey->filled & SURVEY_INFO_TIME) &&
8667             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8668                         survey->time, NL80211_SURVEY_INFO_PAD))
8669                 goto nla_put_failure;
8670         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8671             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8672                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8673                 goto nla_put_failure;
8674         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8675             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8676                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8677                 goto nla_put_failure;
8678         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8679             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8680                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8681                 goto nla_put_failure;
8682         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8683             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8684                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8685                 goto nla_put_failure;
8686         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8687             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8688                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8689                 goto nla_put_failure;
8690
8691         nla_nest_end(msg, infoattr);
8692
8693         genlmsg_end(msg, hdr);
8694         return 0;
8695
8696  nla_put_failure:
8697         genlmsg_cancel(msg, hdr);
8698         return -EMSGSIZE;
8699 }
8700
8701 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8702 {
8703         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8704         struct survey_info survey;
8705         struct cfg80211_registered_device *rdev;
8706         struct wireless_dev *wdev;
8707         int survey_idx = cb->args[2];
8708         int res;
8709         bool radio_stats;
8710
8711         rtnl_lock();
8712         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8713         if (res)
8714                 goto out_err;
8715
8716         /* prepare_wdev_dump parsed the attributes */
8717         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8718
8719         if (!wdev->netdev) {
8720                 res = -EINVAL;
8721                 goto out_err;
8722         }
8723
8724         if (!rdev->ops->dump_survey) {
8725                 res = -EOPNOTSUPP;
8726                 goto out_err;
8727         }
8728
8729         while (1) {
8730                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8731                 if (res == -ENOENT)
8732                         break;
8733                 if (res)
8734                         goto out_err;
8735
8736                 /* don't send disabled channels, but do send non-channel data */
8737                 if (survey.channel &&
8738                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8739                         survey_idx++;
8740                         continue;
8741                 }
8742
8743                 if (nl80211_send_survey(skb,
8744                                 NETLINK_CB(cb->skb).portid,
8745                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8746                                 wdev->netdev, radio_stats, &survey) < 0)
8747                         goto out;
8748                 survey_idx++;
8749         }
8750
8751  out:
8752         cb->args[2] = survey_idx;
8753         res = skb->len;
8754  out_err:
8755         rtnl_unlock();
8756         return res;
8757 }
8758
8759 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8760 {
8761         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8762                                   NL80211_WPA_VERSION_2 |
8763                                   NL80211_WPA_VERSION_3));
8764 }
8765
8766 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8767 {
8768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8769         struct net_device *dev = info->user_ptr[1];
8770         struct ieee80211_channel *chan;
8771         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8772         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8773         enum nl80211_auth_type auth_type;
8774         struct key_parse key;
8775         bool local_state_change;
8776
8777         if (!info->attrs[NL80211_ATTR_MAC])
8778                 return -EINVAL;
8779
8780         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8781                 return -EINVAL;
8782
8783         if (!info->attrs[NL80211_ATTR_SSID])
8784                 return -EINVAL;
8785
8786         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8787                 return -EINVAL;
8788
8789         err = nl80211_parse_key(info, &key);
8790         if (err)
8791                 return err;
8792
8793         if (key.idx >= 0) {
8794                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8795                         return -EINVAL;
8796                 if (!key.p.key || !key.p.key_len)
8797                         return -EINVAL;
8798                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8799                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8800                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8801                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8802                         return -EINVAL;
8803                 if (key.idx > 3)
8804                         return -EINVAL;
8805         } else {
8806                 key.p.key_len = 0;
8807                 key.p.key = NULL;
8808         }
8809
8810         if (key.idx >= 0) {
8811                 int i;
8812                 bool ok = false;
8813
8814                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8815                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8816                                 ok = true;
8817                                 break;
8818                         }
8819                 }
8820                 if (!ok)
8821                         return -EINVAL;
8822         }
8823
8824         if (!rdev->ops->auth)
8825                 return -EOPNOTSUPP;
8826
8827         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8828             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8829                 return -EOPNOTSUPP;
8830
8831         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8832         chan = nl80211_get_valid_chan(&rdev->wiphy,
8833                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8834         if (!chan)
8835                 return -EINVAL;
8836
8837         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8838         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8839
8840         if (info->attrs[NL80211_ATTR_IE]) {
8841                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8842                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8843         }
8844
8845         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8846         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8847                 return -EINVAL;
8848
8849         if ((auth_type == NL80211_AUTHTYPE_SAE ||
8850              auth_type == NL80211_AUTHTYPE_FILS_SK ||
8851              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8852              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8853             !info->attrs[NL80211_ATTR_AUTH_DATA])
8854                 return -EINVAL;
8855
8856         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8857                 if (auth_type != NL80211_AUTHTYPE_SAE &&
8858                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
8859                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8860                     auth_type != NL80211_AUTHTYPE_FILS_PK)
8861                         return -EINVAL;
8862                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8863                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8864                 /* need to include at least Auth Transaction and Status Code */
8865                 if (auth_data_len < 4)
8866                         return -EINVAL;
8867         }
8868
8869         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8870
8871         /*
8872          * Since we no longer track auth state, ignore
8873          * requests to only change local state.
8874          */
8875         if (local_state_change)
8876                 return 0;
8877
8878         wdev_lock(dev->ieee80211_ptr);
8879         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8880                                  ssid, ssid_len, ie, ie_len,
8881                                  key.p.key, key.p.key_len, key.idx,
8882                                  auth_data, auth_data_len);
8883         wdev_unlock(dev->ieee80211_ptr);
8884         return err;
8885 }
8886
8887 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
8888                                      struct genl_info *info)
8889 {
8890         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8891                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
8892                 return -EINVAL;
8893         }
8894
8895         if (!rdev->ops->tx_control_port ||
8896             !wiphy_ext_feature_isset(&rdev->wiphy,
8897                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
8898                 return -EOPNOTSUPP;
8899
8900         return 0;
8901 }
8902
8903 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8904                                    struct genl_info *info,
8905                                    struct cfg80211_crypto_settings *settings,
8906                                    int cipher_limit)
8907 {
8908         memset(settings, 0, sizeof(*settings));
8909
8910         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8911
8912         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8913                 u16 proto;
8914
8915                 proto = nla_get_u16(
8916                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8917                 settings->control_port_ethertype = cpu_to_be16(proto);
8918                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8919                     proto != ETH_P_PAE)
8920                         return -EINVAL;
8921                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8922                         settings->control_port_no_encrypt = true;
8923         } else
8924                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8925
8926         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
8927                 int r = validate_pae_over_nl80211(rdev, info);
8928
8929                 if (r < 0)
8930                         return r;
8931
8932                 settings->control_port_over_nl80211 = true;
8933         }
8934
8935         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8936                 void *data;
8937                 int len, i;
8938
8939                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8940                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8941                 settings->n_ciphers_pairwise = len / sizeof(u32);
8942
8943                 if (len % sizeof(u32))
8944                         return -EINVAL;
8945
8946                 if (settings->n_ciphers_pairwise > cipher_limit)
8947                         return -EINVAL;
8948
8949                 memcpy(settings->ciphers_pairwise, data, len);
8950
8951                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8952                         if (!cfg80211_supported_cipher_suite(
8953                                         &rdev->wiphy,
8954                                         settings->ciphers_pairwise[i]))
8955                                 return -EINVAL;
8956         }
8957
8958         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8959                 settings->cipher_group =
8960                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8961                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8962                                                      settings->cipher_group))
8963                         return -EINVAL;
8964         }
8965
8966         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8967                 settings->wpa_versions =
8968                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8969                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8970                         return -EINVAL;
8971         }
8972
8973         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8974                 void *data;
8975                 int len;
8976
8977                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8978                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8979                 settings->n_akm_suites = len / sizeof(u32);
8980
8981                 if (len % sizeof(u32))
8982                         return -EINVAL;
8983
8984                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8985                         return -EINVAL;
8986
8987                 memcpy(settings->akm_suites, data, len);
8988         }
8989
8990         if (info->attrs[NL80211_ATTR_PMK]) {
8991                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8992                         return -EINVAL;
8993                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8994                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8995                         return -EINVAL;
8996                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8997         }
8998
8999         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9000                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9001                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9002                         return -EINVAL;
9003                 settings->sae_pwd =
9004                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9005                 settings->sae_pwd_len =
9006                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9007         }
9008
9009         return 0;
9010 }
9011
9012 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9013 {
9014         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9015         struct net_device *dev = info->user_ptr[1];
9016         struct ieee80211_channel *chan;
9017         struct cfg80211_assoc_request req = {};
9018         const u8 *bssid, *ssid;
9019         int err, ssid_len = 0;
9020
9021         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9022             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9023                 return -EPERM;
9024
9025         if (!info->attrs[NL80211_ATTR_MAC] ||
9026             !info->attrs[NL80211_ATTR_SSID] ||
9027             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9028                 return -EINVAL;
9029
9030         if (!rdev->ops->assoc)
9031                 return -EOPNOTSUPP;
9032
9033         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9034             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9035                 return -EOPNOTSUPP;
9036
9037         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9038
9039         chan = nl80211_get_valid_chan(&rdev->wiphy,
9040                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9041         if (!chan)
9042                 return -EINVAL;
9043
9044         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9045         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9046
9047         if (info->attrs[NL80211_ATTR_IE]) {
9048                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9049                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9050         }
9051
9052         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9053                 enum nl80211_mfp mfp =
9054                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9055                 if (mfp == NL80211_MFP_REQUIRED)
9056                         req.use_mfp = true;
9057                 else if (mfp != NL80211_MFP_NO)
9058                         return -EINVAL;
9059         }
9060
9061         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9062                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9063
9064         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9065                 req.flags |= ASSOC_REQ_DISABLE_HT;
9066
9067         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9068                 memcpy(&req.ht_capa_mask,
9069                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9070                        sizeof(req.ht_capa_mask));
9071
9072         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9073                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9074                         return -EINVAL;
9075                 memcpy(&req.ht_capa,
9076                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9077                        sizeof(req.ht_capa));
9078         }
9079
9080         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9081                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9082
9083         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9084                 memcpy(&req.vht_capa_mask,
9085                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9086                        sizeof(req.vht_capa_mask));
9087
9088         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9089                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9090                         return -EINVAL;
9091                 memcpy(&req.vht_capa,
9092                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9093                        sizeof(req.vht_capa));
9094         }
9095
9096         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9097                 if (!((rdev->wiphy.features &
9098                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9099                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9100                     !wiphy_ext_feature_isset(&rdev->wiphy,
9101                                              NL80211_EXT_FEATURE_RRM))
9102                         return -EINVAL;
9103                 req.flags |= ASSOC_REQ_USE_RRM;
9104         }
9105
9106         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9107                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9108                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9109                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9110                         return -EINVAL;
9111                 req.fils_nonces =
9112                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9113         }
9114
9115         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9116         if (!err) {
9117                 wdev_lock(dev->ieee80211_ptr);
9118
9119                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9120                                           ssid, ssid_len, &req);
9121
9122                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9123                         dev->ieee80211_ptr->conn_owner_nlportid =
9124                                 info->snd_portid;
9125                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9126                                bssid, ETH_ALEN);
9127                 }
9128
9129                 wdev_unlock(dev->ieee80211_ptr);
9130         }
9131
9132         return err;
9133 }
9134
9135 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9136 {
9137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9138         struct net_device *dev = info->user_ptr[1];
9139         const u8 *ie = NULL, *bssid;
9140         int ie_len = 0, err;
9141         u16 reason_code;
9142         bool local_state_change;
9143
9144         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9145             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9146                 return -EPERM;
9147
9148         if (!info->attrs[NL80211_ATTR_MAC])
9149                 return -EINVAL;
9150
9151         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9152                 return -EINVAL;
9153
9154         if (!rdev->ops->deauth)
9155                 return -EOPNOTSUPP;
9156
9157         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9158             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9159                 return -EOPNOTSUPP;
9160
9161         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9162
9163         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9164         if (reason_code == 0) {
9165                 /* Reason Code 0 is reserved */
9166                 return -EINVAL;
9167         }
9168
9169         if (info->attrs[NL80211_ATTR_IE]) {
9170                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9171                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9172         }
9173
9174         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9175
9176         wdev_lock(dev->ieee80211_ptr);
9177         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9178                                    local_state_change);
9179         wdev_unlock(dev->ieee80211_ptr);
9180         return err;
9181 }
9182
9183 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9184 {
9185         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9186         struct net_device *dev = info->user_ptr[1];
9187         const u8 *ie = NULL, *bssid;
9188         int ie_len = 0, err;
9189         u16 reason_code;
9190         bool local_state_change;
9191
9192         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9193             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9194                 return -EPERM;
9195
9196         if (!info->attrs[NL80211_ATTR_MAC])
9197                 return -EINVAL;
9198
9199         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9200                 return -EINVAL;
9201
9202         if (!rdev->ops->disassoc)
9203                 return -EOPNOTSUPP;
9204
9205         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9206             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9207                 return -EOPNOTSUPP;
9208
9209         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9210
9211         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9212         if (reason_code == 0) {
9213                 /* Reason Code 0 is reserved */
9214                 return -EINVAL;
9215         }
9216
9217         if (info->attrs[NL80211_ATTR_IE]) {
9218                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9219                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9220         }
9221
9222         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9223
9224         wdev_lock(dev->ieee80211_ptr);
9225         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9226                                      local_state_change);
9227         wdev_unlock(dev->ieee80211_ptr);
9228         return err;
9229 }
9230
9231 static bool
9232 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9233                          int mcast_rate[NUM_NL80211_BANDS],
9234                          int rateval)
9235 {
9236         struct wiphy *wiphy = &rdev->wiphy;
9237         bool found = false;
9238         int band, i;
9239
9240         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9241                 struct ieee80211_supported_band *sband;
9242
9243                 sband = wiphy->bands[band];
9244                 if (!sband)
9245                         continue;
9246
9247                 for (i = 0; i < sband->n_bitrates; i++) {
9248                         if (sband->bitrates[i].bitrate == rateval) {
9249                                 mcast_rate[band] = i + 1;
9250                                 found = true;
9251                                 break;
9252                         }
9253                 }
9254         }
9255
9256         return found;
9257 }
9258
9259 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9260 {
9261         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9262         struct net_device *dev = info->user_ptr[1];
9263         struct cfg80211_ibss_params ibss;
9264         struct wiphy *wiphy;
9265         struct cfg80211_cached_keys *connkeys = NULL;
9266         int err;
9267
9268         memset(&ibss, 0, sizeof(ibss));
9269
9270         if (!info->attrs[NL80211_ATTR_SSID] ||
9271             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9272                 return -EINVAL;
9273
9274         ibss.beacon_interval = 100;
9275
9276         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9277                 ibss.beacon_interval =
9278                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9279
9280         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9281                                            ibss.beacon_interval);
9282         if (err)
9283                 return err;
9284
9285         if (!rdev->ops->join_ibss)
9286                 return -EOPNOTSUPP;
9287
9288         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9289                 return -EOPNOTSUPP;
9290
9291         wiphy = &rdev->wiphy;
9292
9293         if (info->attrs[NL80211_ATTR_MAC]) {
9294                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9295
9296                 if (!is_valid_ether_addr(ibss.bssid))
9297                         return -EINVAL;
9298         }
9299         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9300         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9301
9302         if (info->attrs[NL80211_ATTR_IE]) {
9303                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9304                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9305         }
9306
9307         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9308         if (err)
9309                 return err;
9310
9311         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9312                                      NL80211_IFTYPE_ADHOC))
9313                 return -EINVAL;
9314
9315         switch (ibss.chandef.width) {
9316         case NL80211_CHAN_WIDTH_5:
9317         case NL80211_CHAN_WIDTH_10:
9318         case NL80211_CHAN_WIDTH_20_NOHT:
9319                 break;
9320         case NL80211_CHAN_WIDTH_20:
9321         case NL80211_CHAN_WIDTH_40:
9322                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9323                         return -EINVAL;
9324                 break;
9325         case NL80211_CHAN_WIDTH_80:
9326         case NL80211_CHAN_WIDTH_80P80:
9327         case NL80211_CHAN_WIDTH_160:
9328                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9329                         return -EINVAL;
9330                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9331                                              NL80211_EXT_FEATURE_VHT_IBSS))
9332                         return -EINVAL;
9333                 break;
9334         default:
9335                 return -EINVAL;
9336         }
9337
9338         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9339         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9340
9341         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9342                 u8 *rates =
9343                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9344                 int n_rates =
9345                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9346                 struct ieee80211_supported_band *sband =
9347                         wiphy->bands[ibss.chandef.chan->band];
9348
9349                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9350                                              &ibss.basic_rates);
9351                 if (err)
9352                         return err;
9353         }
9354
9355         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9356                 memcpy(&ibss.ht_capa_mask,
9357                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9358                        sizeof(ibss.ht_capa_mask));
9359
9360         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9361                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9362                         return -EINVAL;
9363                 memcpy(&ibss.ht_capa,
9364                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9365                        sizeof(ibss.ht_capa));
9366         }
9367
9368         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9369             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9370                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9371                 return -EINVAL;
9372
9373         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9374                 bool no_ht = false;
9375
9376                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9377                 if (IS_ERR(connkeys))
9378                         return PTR_ERR(connkeys);
9379
9380                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9381                     no_ht) {
9382                         kzfree(connkeys);
9383                         return -EINVAL;
9384                 }
9385         }
9386
9387         ibss.control_port =
9388                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9389
9390         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9391                 int r = validate_pae_over_nl80211(rdev, info);
9392
9393                 if (r < 0) {
9394                         kzfree(connkeys);
9395                         return r;
9396                 }
9397
9398                 ibss.control_port_over_nl80211 = true;
9399         }
9400
9401         ibss.userspace_handles_dfs =
9402                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9403
9404         wdev_lock(dev->ieee80211_ptr);
9405         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9406         if (err)
9407                 kzfree(connkeys);
9408         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9409                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9410         wdev_unlock(dev->ieee80211_ptr);
9411
9412         return err;
9413 }
9414
9415 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9416 {
9417         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9418         struct net_device *dev = info->user_ptr[1];
9419
9420         if (!rdev->ops->leave_ibss)
9421                 return -EOPNOTSUPP;
9422
9423         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9424                 return -EOPNOTSUPP;
9425
9426         return cfg80211_leave_ibss(rdev, dev, false);
9427 }
9428
9429 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9430 {
9431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9432         struct net_device *dev = info->user_ptr[1];
9433         int mcast_rate[NUM_NL80211_BANDS];
9434         u32 nla_rate;
9435         int err;
9436
9437         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9438             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9439             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9440                 return -EOPNOTSUPP;
9441
9442         if (!rdev->ops->set_mcast_rate)
9443                 return -EOPNOTSUPP;
9444
9445         memset(mcast_rate, 0, sizeof(mcast_rate));
9446
9447         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9448                 return -EINVAL;
9449
9450         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9451         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9452                 return -EINVAL;
9453
9454         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9455
9456         return err;
9457 }
9458
9459 static struct sk_buff *
9460 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9461                             struct wireless_dev *wdev, int approxlen,
9462                             u32 portid, u32 seq, enum nl80211_commands cmd,
9463                             enum nl80211_attrs attr,
9464                             const struct nl80211_vendor_cmd_info *info,
9465                             gfp_t gfp)
9466 {
9467         struct sk_buff *skb;
9468         void *hdr;
9469         struct nlattr *data;
9470
9471         skb = nlmsg_new(approxlen + 100, gfp);
9472         if (!skb)
9473                 return NULL;
9474
9475         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9476         if (!hdr) {
9477                 kfree_skb(skb);
9478                 return NULL;
9479         }
9480
9481         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9482                 goto nla_put_failure;
9483
9484         if (info) {
9485                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9486                                 info->vendor_id))
9487                         goto nla_put_failure;
9488                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9489                                 info->subcmd))
9490                         goto nla_put_failure;
9491         }
9492
9493         if (wdev) {
9494                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9495                                       wdev_id(wdev), NL80211_ATTR_PAD))
9496                         goto nla_put_failure;
9497                 if (wdev->netdev &&
9498                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9499                                 wdev->netdev->ifindex))
9500                         goto nla_put_failure;
9501         }
9502
9503         data = nla_nest_start_noflag(skb, attr);
9504         if (!data)
9505                 goto nla_put_failure;
9506
9507         ((void **)skb->cb)[0] = rdev;
9508         ((void **)skb->cb)[1] = hdr;
9509         ((void **)skb->cb)[2] = data;
9510
9511         return skb;
9512
9513  nla_put_failure:
9514         kfree_skb(skb);
9515         return NULL;
9516 }
9517
9518 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9519                                            struct wireless_dev *wdev,
9520                                            enum nl80211_commands cmd,
9521                                            enum nl80211_attrs attr,
9522                                            unsigned int portid,
9523                                            int vendor_event_idx,
9524                                            int approxlen, gfp_t gfp)
9525 {
9526         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9527         const struct nl80211_vendor_cmd_info *info;
9528
9529         switch (cmd) {
9530         case NL80211_CMD_TESTMODE:
9531                 if (WARN_ON(vendor_event_idx != -1))
9532                         return NULL;
9533                 info = NULL;
9534                 break;
9535         case NL80211_CMD_VENDOR:
9536                 if (WARN_ON(vendor_event_idx < 0 ||
9537                             vendor_event_idx >= wiphy->n_vendor_events))
9538                         return NULL;
9539                 info = &wiphy->vendor_events[vendor_event_idx];
9540                 break;
9541         default:
9542                 WARN_ON(1);
9543                 return NULL;
9544         }
9545
9546         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9547                                            cmd, attr, info, gfp);
9548 }
9549 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9550
9551 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9552 {
9553         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9554         void *hdr = ((void **)skb->cb)[1];
9555         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9556         struct nlattr *data = ((void **)skb->cb)[2];
9557         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9558
9559         /* clear CB data for netlink core to own from now on */
9560         memset(skb->cb, 0, sizeof(skb->cb));
9561
9562         nla_nest_end(skb, data);
9563         genlmsg_end(skb, hdr);
9564
9565         if (nlhdr->nlmsg_pid) {
9566                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9567                                 nlhdr->nlmsg_pid);
9568         } else {
9569                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9570                         mcgrp = NL80211_MCGRP_VENDOR;
9571
9572                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9573                                         skb, 0, mcgrp, gfp);
9574         }
9575 }
9576 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9577
9578 #ifdef CONFIG_NL80211_TESTMODE
9579 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9580 {
9581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9582         struct wireless_dev *wdev =
9583                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9584         int err;
9585
9586         if (!rdev->ops->testmode_cmd)
9587                 return -EOPNOTSUPP;
9588
9589         if (IS_ERR(wdev)) {
9590                 err = PTR_ERR(wdev);
9591                 if (err != -EINVAL)
9592                         return err;
9593                 wdev = NULL;
9594         } else if (wdev->wiphy != &rdev->wiphy) {
9595                 return -EINVAL;
9596         }
9597
9598         if (!info->attrs[NL80211_ATTR_TESTDATA])
9599                 return -EINVAL;
9600
9601         rdev->cur_cmd_info = info;
9602         err = rdev_testmode_cmd(rdev, wdev,
9603                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9604                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9605         rdev->cur_cmd_info = NULL;
9606
9607         return err;
9608 }
9609
9610 static int nl80211_testmode_dump(struct sk_buff *skb,
9611                                  struct netlink_callback *cb)
9612 {
9613         struct cfg80211_registered_device *rdev;
9614         int err;
9615         long phy_idx;
9616         void *data = NULL;
9617         int data_len = 0;
9618
9619         rtnl_lock();
9620
9621         if (cb->args[0]) {
9622                 /*
9623                  * 0 is a valid index, but not valid for args[0],
9624                  * so we need to offset by 1.
9625                  */
9626                 phy_idx = cb->args[0] - 1;
9627
9628                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9629                 if (!rdev) {
9630                         err = -ENOENT;
9631                         goto out_err;
9632                 }
9633         } else {
9634                 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
9635
9636                 err = nlmsg_parse_deprecated(cb->nlh,
9637                                              GENL_HDRLEN + nl80211_fam.hdrsize,
9638                                              attrbuf, nl80211_fam.maxattr,
9639                                              nl80211_policy, NULL);
9640                 if (err)
9641                         goto out_err;
9642
9643                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9644                 if (IS_ERR(rdev)) {
9645                         err = PTR_ERR(rdev);
9646                         goto out_err;
9647                 }
9648                 phy_idx = rdev->wiphy_idx;
9649
9650                 if (attrbuf[NL80211_ATTR_TESTDATA])
9651                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9652         }
9653
9654         if (cb->args[1]) {
9655                 data = nla_data((void *)cb->args[1]);
9656                 data_len = nla_len((void *)cb->args[1]);
9657         }
9658
9659         if (!rdev->ops->testmode_dump) {
9660                 err = -EOPNOTSUPP;
9661                 goto out_err;
9662         }
9663
9664         while (1) {
9665                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9666                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9667                                            NL80211_CMD_TESTMODE);
9668                 struct nlattr *tmdata;
9669
9670                 if (!hdr)
9671                         break;
9672
9673                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9674                         genlmsg_cancel(skb, hdr);
9675                         break;
9676                 }
9677
9678                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
9679                 if (!tmdata) {
9680                         genlmsg_cancel(skb, hdr);
9681                         break;
9682                 }
9683                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9684                 nla_nest_end(skb, tmdata);
9685
9686                 if (err == -ENOBUFS || err == -ENOENT) {
9687                         genlmsg_cancel(skb, hdr);
9688                         break;
9689                 } else if (err) {
9690                         genlmsg_cancel(skb, hdr);
9691                         goto out_err;
9692                 }
9693
9694                 genlmsg_end(skb, hdr);
9695         }
9696
9697         err = skb->len;
9698         /* see above */
9699         cb->args[0] = phy_idx + 1;
9700  out_err:
9701         rtnl_unlock();
9702         return err;
9703 }
9704 #endif
9705
9706 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9707 {
9708         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9709         struct net_device *dev = info->user_ptr[1];
9710         struct cfg80211_connect_params connect;
9711         struct wiphy *wiphy;
9712         struct cfg80211_cached_keys *connkeys = NULL;
9713         int err;
9714
9715         memset(&connect, 0, sizeof(connect));
9716
9717         if (!info->attrs[NL80211_ATTR_SSID] ||
9718             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9719                 return -EINVAL;
9720
9721         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9722                 connect.auth_type =
9723                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9724                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9725                                              NL80211_CMD_CONNECT))
9726                         return -EINVAL;
9727         } else
9728                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9729
9730         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9731
9732         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9733             !wiphy_ext_feature_isset(&rdev->wiphy,
9734                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9735                 return -EINVAL;
9736         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9737
9738         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9739                                       NL80211_MAX_NR_CIPHER_SUITES);
9740         if (err)
9741                 return err;
9742
9743         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9744             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9745                 return -EOPNOTSUPP;
9746
9747         wiphy = &rdev->wiphy;
9748
9749         connect.bg_scan_period = -1;
9750         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9751                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9752                 connect.bg_scan_period =
9753                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9754         }
9755
9756         if (info->attrs[NL80211_ATTR_MAC])
9757                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9758         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9759                 connect.bssid_hint =
9760                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9761         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9762         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9763
9764         if (info->attrs[NL80211_ATTR_IE]) {
9765                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9766                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9767         }
9768
9769         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9770                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9771                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9772                     !wiphy_ext_feature_isset(&rdev->wiphy,
9773                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9774                         return -EOPNOTSUPP;
9775         } else {
9776                 connect.mfp = NL80211_MFP_NO;
9777         }
9778
9779         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9780                 connect.prev_bssid =
9781                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9782
9783         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9784                 connect.channel = nl80211_get_valid_chan(
9785                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9786                 if (!connect.channel)
9787                         return -EINVAL;
9788         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9789                 connect.channel_hint = nl80211_get_valid_chan(
9790                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9791                 if (!connect.channel_hint)
9792                         return -EINVAL;
9793         }
9794
9795         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9796                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9797                 if (IS_ERR(connkeys))
9798                         return PTR_ERR(connkeys);
9799         }
9800
9801         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9802                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9803
9804         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9805                 memcpy(&connect.ht_capa_mask,
9806                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9807                        sizeof(connect.ht_capa_mask));
9808
9809         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9810                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9811                         kzfree(connkeys);
9812                         return -EINVAL;
9813                 }
9814                 memcpy(&connect.ht_capa,
9815                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9816                        sizeof(connect.ht_capa));
9817         }
9818
9819         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9820                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9821
9822         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9823                 memcpy(&connect.vht_capa_mask,
9824                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9825                        sizeof(connect.vht_capa_mask));
9826
9827         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9828                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9829                         kzfree(connkeys);
9830                         return -EINVAL;
9831                 }
9832                 memcpy(&connect.vht_capa,
9833                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9834                        sizeof(connect.vht_capa));
9835         }
9836
9837         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9838                 if (!((rdev->wiphy.features &
9839                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9840                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9841                     !wiphy_ext_feature_isset(&rdev->wiphy,
9842                                              NL80211_EXT_FEATURE_RRM)) {
9843                         kzfree(connkeys);
9844                         return -EINVAL;
9845                 }
9846                 connect.flags |= ASSOC_REQ_USE_RRM;
9847         }
9848
9849         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9850         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9851                 kzfree(connkeys);
9852                 return -EOPNOTSUPP;
9853         }
9854
9855         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9856                 /* bss selection makes no sense if bssid is set */
9857                 if (connect.bssid) {
9858                         kzfree(connkeys);
9859                         return -EINVAL;
9860                 }
9861
9862                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9863                                        wiphy, &connect.bss_select);
9864                 if (err) {
9865                         kzfree(connkeys);
9866                         return err;
9867                 }
9868         }
9869
9870         if (wiphy_ext_feature_isset(&rdev->wiphy,
9871                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9872             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9873             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9874             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9875             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9876                 connect.fils_erp_username =
9877                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9878                 connect.fils_erp_username_len =
9879                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9880                 connect.fils_erp_realm =
9881                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9882                 connect.fils_erp_realm_len =
9883                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9884                 connect.fils_erp_next_seq_num =
9885                         nla_get_u16(
9886                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9887                 connect.fils_erp_rrk =
9888                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9889                 connect.fils_erp_rrk_len =
9890                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9891         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9892                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9893                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9894                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9895                 kzfree(connkeys);
9896                 return -EINVAL;
9897         }
9898
9899         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
9900                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9901                         kzfree(connkeys);
9902                         GENL_SET_ERR_MSG(info,
9903                                          "external auth requires connection ownership");
9904                         return -EINVAL;
9905                 }
9906                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
9907         }
9908
9909         wdev_lock(dev->ieee80211_ptr);
9910
9911         err = cfg80211_connect(rdev, dev, &connect, connkeys,
9912                                connect.prev_bssid);
9913         if (err)
9914                 kzfree(connkeys);
9915
9916         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9917                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9918                 if (connect.bssid)
9919                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9920                                connect.bssid, ETH_ALEN);
9921                 else
9922                         memset(dev->ieee80211_ptr->disconnect_bssid,
9923                                0, ETH_ALEN);
9924         }
9925
9926         wdev_unlock(dev->ieee80211_ptr);
9927
9928         return err;
9929 }
9930
9931 static int nl80211_update_connect_params(struct sk_buff *skb,
9932                                          struct genl_info *info)
9933 {
9934         struct cfg80211_connect_params connect = {};
9935         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9936         struct net_device *dev = info->user_ptr[1];
9937         struct wireless_dev *wdev = dev->ieee80211_ptr;
9938         bool fils_sk_offload;
9939         u32 auth_type;
9940         u32 changed = 0;
9941         int ret;
9942
9943         if (!rdev->ops->update_connect_params)
9944                 return -EOPNOTSUPP;
9945
9946         if (info->attrs[NL80211_ATTR_IE]) {
9947                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9948                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9949                 changed |= UPDATE_ASSOC_IES;
9950         }
9951
9952         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
9953                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
9954
9955         /*
9956          * when driver supports fils-sk offload all attributes must be
9957          * provided. So the else covers "fils-sk-not-all" and
9958          * "no-fils-sk-any".
9959          */
9960         if (fils_sk_offload &&
9961             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9962             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9963             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9964             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9965                 connect.fils_erp_username =
9966                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9967                 connect.fils_erp_username_len =
9968                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9969                 connect.fils_erp_realm =
9970                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9971                 connect.fils_erp_realm_len =
9972                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9973                 connect.fils_erp_next_seq_num =
9974                         nla_get_u16(
9975                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9976                 connect.fils_erp_rrk =
9977                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9978                 connect.fils_erp_rrk_len =
9979                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9980                 changed |= UPDATE_FILS_ERP_INFO;
9981         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9982                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9983                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9984                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9985                 return -EINVAL;
9986         }
9987
9988         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9989                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9990                 if (!nl80211_valid_auth_type(rdev, auth_type,
9991                                              NL80211_CMD_CONNECT))
9992                         return -EINVAL;
9993
9994                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
9995                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
9996                         return -EINVAL;
9997
9998                 connect.auth_type = auth_type;
9999                 changed |= UPDATE_AUTH_TYPE;
10000         }
10001
10002         wdev_lock(dev->ieee80211_ptr);
10003         if (!wdev->current_bss)
10004                 ret = -ENOLINK;
10005         else
10006                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10007         wdev_unlock(dev->ieee80211_ptr);
10008
10009         return ret;
10010 }
10011
10012 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10013 {
10014         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10015         struct net_device *dev = info->user_ptr[1];
10016         u16 reason;
10017         int ret;
10018
10019         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10020             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10021                 return -EPERM;
10022
10023         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10024                 reason = WLAN_REASON_DEAUTH_LEAVING;
10025         else
10026                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10027
10028         if (reason == 0)
10029                 return -EINVAL;
10030
10031         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10032             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10033                 return -EOPNOTSUPP;
10034
10035         wdev_lock(dev->ieee80211_ptr);
10036         ret = cfg80211_disconnect(rdev, dev, reason, true);
10037         wdev_unlock(dev->ieee80211_ptr);
10038         return ret;
10039 }
10040
10041 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10042 {
10043         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10044         struct net *net;
10045         int err;
10046
10047         if (info->attrs[NL80211_ATTR_PID]) {
10048                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10049
10050                 net = get_net_ns_by_pid(pid);
10051         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10052                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10053
10054                 net = get_net_ns_by_fd(fd);
10055         } else {
10056                 return -EINVAL;
10057         }
10058
10059         if (IS_ERR(net))
10060                 return PTR_ERR(net);
10061
10062         err = 0;
10063
10064         /* check if anything to do */
10065         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10066                 err = cfg80211_switch_netns(rdev, net);
10067
10068         put_net(net);
10069         return err;
10070 }
10071
10072 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10073 {
10074         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10075         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10076                         struct cfg80211_pmksa *pmksa) = NULL;
10077         struct net_device *dev = info->user_ptr[1];
10078         struct cfg80211_pmksa pmksa;
10079
10080         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10081
10082         if (!info->attrs[NL80211_ATTR_PMKID])
10083                 return -EINVAL;
10084
10085         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10086
10087         if (info->attrs[NL80211_ATTR_MAC]) {
10088                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10089         } else if (info->attrs[NL80211_ATTR_SSID] &&
10090                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10091                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10092                     info->attrs[NL80211_ATTR_PMK])) {
10093                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10094                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10095                 pmksa.cache_id =
10096                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10097         } else {
10098                 return -EINVAL;
10099         }
10100         if (info->attrs[NL80211_ATTR_PMK]) {
10101                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10102                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10103         }
10104
10105         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10106             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10107             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10108               wiphy_ext_feature_isset(&rdev->wiphy,
10109                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10110                 return -EOPNOTSUPP;
10111
10112         switch (info->genlhdr->cmd) {
10113         case NL80211_CMD_SET_PMKSA:
10114                 rdev_ops = rdev->ops->set_pmksa;
10115                 break;
10116         case NL80211_CMD_DEL_PMKSA:
10117                 rdev_ops = rdev->ops->del_pmksa;
10118                 break;
10119         default:
10120                 WARN_ON(1);
10121                 break;
10122         }
10123
10124         if (!rdev_ops)
10125                 return -EOPNOTSUPP;
10126
10127         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10128 }
10129
10130 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10131 {
10132         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10133         struct net_device *dev = info->user_ptr[1];
10134
10135         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10136             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10137                 return -EOPNOTSUPP;
10138
10139         if (!rdev->ops->flush_pmksa)
10140                 return -EOPNOTSUPP;
10141
10142         return rdev_flush_pmksa(rdev, dev);
10143 }
10144
10145 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10146 {
10147         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10148         struct net_device *dev = info->user_ptr[1];
10149         u8 action_code, dialog_token;
10150         u32 peer_capability = 0;
10151         u16 status_code;
10152         u8 *peer;
10153         bool initiator;
10154
10155         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10156             !rdev->ops->tdls_mgmt)
10157                 return -EOPNOTSUPP;
10158
10159         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10160             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10161             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10162             !info->attrs[NL80211_ATTR_IE] ||
10163             !info->attrs[NL80211_ATTR_MAC])
10164                 return -EINVAL;
10165
10166         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10167         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10168         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10169         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10170         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10171         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10172                 peer_capability =
10173                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10174
10175         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10176                               dialog_token, status_code, peer_capability,
10177                               initiator,
10178                               nla_data(info->attrs[NL80211_ATTR_IE]),
10179                               nla_len(info->attrs[NL80211_ATTR_IE]));
10180 }
10181
10182 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10183 {
10184         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10185         struct net_device *dev = info->user_ptr[1];
10186         enum nl80211_tdls_operation operation;
10187         u8 *peer;
10188
10189         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10190             !rdev->ops->tdls_oper)
10191                 return -EOPNOTSUPP;
10192
10193         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10194             !info->attrs[NL80211_ATTR_MAC])
10195                 return -EINVAL;
10196
10197         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10198         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10199
10200         return rdev_tdls_oper(rdev, dev, peer, operation);
10201 }
10202
10203 static int nl80211_remain_on_channel(struct sk_buff *skb,
10204                                      struct genl_info *info)
10205 {
10206         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10207         struct wireless_dev *wdev = info->user_ptr[1];
10208         struct cfg80211_chan_def chandef;
10209         const struct cfg80211_chan_def *compat_chandef;
10210         struct sk_buff *msg;
10211         void *hdr;
10212         u64 cookie;
10213         u32 duration;
10214         int err;
10215
10216         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10217             !info->attrs[NL80211_ATTR_DURATION])
10218                 return -EINVAL;
10219
10220         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10221
10222         if (!rdev->ops->remain_on_channel ||
10223             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10224                 return -EOPNOTSUPP;
10225
10226         /*
10227          * We should be on that channel for at least a minimum amount of
10228          * time (10ms) but no longer than the driver supports.
10229          */
10230         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10231             duration > rdev->wiphy.max_remain_on_channel_duration)
10232                 return -EINVAL;
10233
10234         err = nl80211_parse_chandef(rdev, info, &chandef);
10235         if (err)
10236                 return err;
10237
10238         wdev_lock(wdev);
10239         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10240             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10241                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10242                                                              &chandef);
10243                 if (compat_chandef != &chandef) {
10244                         wdev_unlock(wdev);
10245                         return -EBUSY;
10246                 }
10247         }
10248         wdev_unlock(wdev);
10249
10250         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10251         if (!msg)
10252                 return -ENOMEM;
10253
10254         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10255                              NL80211_CMD_REMAIN_ON_CHANNEL);
10256         if (!hdr) {
10257                 err = -ENOBUFS;
10258                 goto free_msg;
10259         }
10260
10261         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10262                                      duration, &cookie);
10263
10264         if (err)
10265                 goto free_msg;
10266
10267         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10268                               NL80211_ATTR_PAD))
10269                 goto nla_put_failure;
10270
10271         genlmsg_end(msg, hdr);
10272
10273         return genlmsg_reply(msg, info);
10274
10275  nla_put_failure:
10276         err = -ENOBUFS;
10277  free_msg:
10278         nlmsg_free(msg);
10279         return err;
10280 }
10281
10282 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10283                                             struct genl_info *info)
10284 {
10285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10286         struct wireless_dev *wdev = info->user_ptr[1];
10287         u64 cookie;
10288
10289         if (!info->attrs[NL80211_ATTR_COOKIE])
10290                 return -EINVAL;
10291
10292         if (!rdev->ops->cancel_remain_on_channel)
10293                 return -EOPNOTSUPP;
10294
10295         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10296
10297         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10298 }
10299
10300 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10301                                        struct genl_info *info)
10302 {
10303         struct cfg80211_bitrate_mask mask;
10304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10305         struct net_device *dev = info->user_ptr[1];
10306         int err;
10307
10308         if (!rdev->ops->set_bitrate_mask)
10309                 return -EOPNOTSUPP;
10310
10311         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10312         if (err)
10313                 return err;
10314
10315         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10316 }
10317
10318 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10319 {
10320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10321         struct wireless_dev *wdev = info->user_ptr[1];
10322         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10323
10324         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10325                 return -EINVAL;
10326
10327         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10328                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10329
10330         switch (wdev->iftype) {
10331         case NL80211_IFTYPE_STATION:
10332         case NL80211_IFTYPE_ADHOC:
10333         case NL80211_IFTYPE_P2P_CLIENT:
10334         case NL80211_IFTYPE_AP:
10335         case NL80211_IFTYPE_AP_VLAN:
10336         case NL80211_IFTYPE_MESH_POINT:
10337         case NL80211_IFTYPE_P2P_GO:
10338         case NL80211_IFTYPE_P2P_DEVICE:
10339                 break;
10340         case NL80211_IFTYPE_NAN:
10341         default:
10342                 return -EOPNOTSUPP;
10343         }
10344
10345         /* not much point in registering if we can't reply */
10346         if (!rdev->ops->mgmt_tx)
10347                 return -EOPNOTSUPP;
10348
10349         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10350                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10351                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10352 }
10353
10354 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10355 {
10356         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10357         struct wireless_dev *wdev = info->user_ptr[1];
10358         struct cfg80211_chan_def chandef;
10359         int err;
10360         void *hdr = NULL;
10361         u64 cookie;
10362         struct sk_buff *msg = NULL;
10363         struct cfg80211_mgmt_tx_params params = {
10364                 .dont_wait_for_ack =
10365                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10366         };
10367
10368         if (!info->attrs[NL80211_ATTR_FRAME])
10369                 return -EINVAL;
10370
10371         if (!rdev->ops->mgmt_tx)
10372                 return -EOPNOTSUPP;
10373
10374         switch (wdev->iftype) {
10375         case NL80211_IFTYPE_P2P_DEVICE:
10376                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10377                         return -EINVAL;
10378         case NL80211_IFTYPE_STATION:
10379         case NL80211_IFTYPE_ADHOC:
10380         case NL80211_IFTYPE_P2P_CLIENT:
10381         case NL80211_IFTYPE_AP:
10382         case NL80211_IFTYPE_AP_VLAN:
10383         case NL80211_IFTYPE_MESH_POINT:
10384         case NL80211_IFTYPE_P2P_GO:
10385                 break;
10386         case NL80211_IFTYPE_NAN:
10387         default:
10388                 return -EOPNOTSUPP;
10389         }
10390
10391         if (info->attrs[NL80211_ATTR_DURATION]) {
10392                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10393                         return -EINVAL;
10394                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10395
10396                 /*
10397                  * We should wait on the channel for at least a minimum amount
10398                  * of time (10ms) but no longer than the driver supports.
10399                  */
10400                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10401                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10402                         return -EINVAL;
10403         }
10404
10405         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10406
10407         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10408                 return -EINVAL;
10409
10410         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10411
10412         /* get the channel if any has been specified, otherwise pass NULL to
10413          * the driver. The latter will use the current one
10414          */
10415         chandef.chan = NULL;
10416         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10417                 err = nl80211_parse_chandef(rdev, info, &chandef);
10418                 if (err)
10419                         return err;
10420         }
10421
10422         if (!chandef.chan && params.offchan)
10423                 return -EINVAL;
10424
10425         wdev_lock(wdev);
10426         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10427                 wdev_unlock(wdev);
10428                 return -EBUSY;
10429         }
10430         wdev_unlock(wdev);
10431
10432         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10433         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10434
10435         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10436                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10437                 int i;
10438
10439                 if (len % sizeof(u16))
10440                         return -EINVAL;
10441
10442                 params.n_csa_offsets = len / sizeof(u16);
10443                 params.csa_offsets =
10444                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10445
10446                 /* check that all the offsets fit the frame */
10447                 for (i = 0; i < params.n_csa_offsets; i++) {
10448                         if (params.csa_offsets[i] >= params.len)
10449                                 return -EINVAL;
10450                 }
10451         }
10452
10453         if (!params.dont_wait_for_ack) {
10454                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10455                 if (!msg)
10456                         return -ENOMEM;
10457
10458                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10459                                      NL80211_CMD_FRAME);
10460                 if (!hdr) {
10461                         err = -ENOBUFS;
10462                         goto free_msg;
10463                 }
10464         }
10465
10466         params.chan = chandef.chan;
10467         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10468         if (err)
10469                 goto free_msg;
10470
10471         if (msg) {
10472                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10473                                       NL80211_ATTR_PAD))
10474                         goto nla_put_failure;
10475
10476                 genlmsg_end(msg, hdr);
10477                 return genlmsg_reply(msg, info);
10478         }
10479
10480         return 0;
10481
10482  nla_put_failure:
10483         err = -ENOBUFS;
10484  free_msg:
10485         nlmsg_free(msg);
10486         return err;
10487 }
10488
10489 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10490 {
10491         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10492         struct wireless_dev *wdev = info->user_ptr[1];
10493         u64 cookie;
10494
10495         if (!info->attrs[NL80211_ATTR_COOKIE])
10496                 return -EINVAL;
10497
10498         if (!rdev->ops->mgmt_tx_cancel_wait)
10499                 return -EOPNOTSUPP;
10500
10501         switch (wdev->iftype) {
10502         case NL80211_IFTYPE_STATION:
10503         case NL80211_IFTYPE_ADHOC:
10504         case NL80211_IFTYPE_P2P_CLIENT:
10505         case NL80211_IFTYPE_AP:
10506         case NL80211_IFTYPE_AP_VLAN:
10507         case NL80211_IFTYPE_P2P_GO:
10508         case NL80211_IFTYPE_P2P_DEVICE:
10509                 break;
10510         case NL80211_IFTYPE_NAN:
10511         default:
10512                 return -EOPNOTSUPP;
10513         }
10514
10515         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10516
10517         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10518 }
10519
10520 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10521 {
10522         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10523         struct wireless_dev *wdev;
10524         struct net_device *dev = info->user_ptr[1];
10525         u8 ps_state;
10526         bool state;
10527         int err;
10528
10529         if (!info->attrs[NL80211_ATTR_PS_STATE])
10530                 return -EINVAL;
10531
10532         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10533
10534         wdev = dev->ieee80211_ptr;
10535
10536         if (!rdev->ops->set_power_mgmt)
10537                 return -EOPNOTSUPP;
10538
10539         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10540
10541         if (state == wdev->ps)
10542                 return 0;
10543
10544         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10545         if (!err)
10546                 wdev->ps = state;
10547         return err;
10548 }
10549
10550 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10551 {
10552         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10553         enum nl80211_ps_state ps_state;
10554         struct wireless_dev *wdev;
10555         struct net_device *dev = info->user_ptr[1];
10556         struct sk_buff *msg;
10557         void *hdr;
10558         int err;
10559
10560         wdev = dev->ieee80211_ptr;
10561
10562         if (!rdev->ops->set_power_mgmt)
10563                 return -EOPNOTSUPP;
10564
10565         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10566         if (!msg)
10567                 return -ENOMEM;
10568
10569         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10570                              NL80211_CMD_GET_POWER_SAVE);
10571         if (!hdr) {
10572                 err = -ENOBUFS;
10573                 goto free_msg;
10574         }
10575
10576         if (wdev->ps)
10577                 ps_state = NL80211_PS_ENABLED;
10578         else
10579                 ps_state = NL80211_PS_DISABLED;
10580
10581         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10582                 goto nla_put_failure;
10583
10584         genlmsg_end(msg, hdr);
10585         return genlmsg_reply(msg, info);
10586
10587  nla_put_failure:
10588         err = -ENOBUFS;
10589  free_msg:
10590         nlmsg_free(msg);
10591         return err;
10592 }
10593
10594 static const struct nla_policy
10595 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10596         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10597         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10598         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10599         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10600         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10601         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10602         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10603 };
10604
10605 static int nl80211_set_cqm_txe(struct genl_info *info,
10606                                u32 rate, u32 pkts, u32 intvl)
10607 {
10608         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10609         struct net_device *dev = info->user_ptr[1];
10610         struct wireless_dev *wdev = dev->ieee80211_ptr;
10611
10612         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10613                 return -EINVAL;
10614
10615         if (!rdev->ops->set_cqm_txe_config)
10616                 return -EOPNOTSUPP;
10617
10618         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10619             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10620                 return -EOPNOTSUPP;
10621
10622         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10623 }
10624
10625 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10626                                     struct net_device *dev)
10627 {
10628         struct wireless_dev *wdev = dev->ieee80211_ptr;
10629         s32 last, low, high;
10630         u32 hyst;
10631         int i, n, low_index;
10632         int err;
10633
10634         /* RSSI reporting disabled? */
10635         if (!wdev->cqm_config)
10636                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10637
10638         /*
10639          * Obtain current RSSI value if possible, if not and no RSSI threshold
10640          * event has been received yet, we should receive an event after a
10641          * connection is established and enough beacons received to calculate
10642          * the average.
10643          */
10644         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10645             rdev->ops->get_station) {
10646                 struct station_info sinfo = {};
10647                 u8 *mac_addr;
10648
10649                 mac_addr = wdev->current_bss->pub.bssid;
10650
10651                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10652                 if (err)
10653                         return err;
10654
10655                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10656                         wdev->cqm_config->last_rssi_event_value =
10657                                 (s8) sinfo.rx_beacon_signal_avg;
10658         }
10659
10660         last = wdev->cqm_config->last_rssi_event_value;
10661         hyst = wdev->cqm_config->rssi_hyst;
10662         n = wdev->cqm_config->n_rssi_thresholds;
10663
10664         for (i = 0; i < n; i++)
10665                 if (last < wdev->cqm_config->rssi_thresholds[i])
10666                         break;
10667
10668         low_index = i - 1;
10669         if (low_index >= 0) {
10670                 low_index = array_index_nospec(low_index, n);
10671                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10672         } else {
10673                 low = S32_MIN;
10674         }
10675         if (i < n) {
10676                 i = array_index_nospec(i, n);
10677                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10678         } else {
10679                 high = S32_MAX;
10680         }
10681
10682         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10683 }
10684
10685 static int nl80211_set_cqm_rssi(struct genl_info *info,
10686                                 const s32 *thresholds, int n_thresholds,
10687                                 u32 hysteresis)
10688 {
10689         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10690         struct net_device *dev = info->user_ptr[1];
10691         struct wireless_dev *wdev = dev->ieee80211_ptr;
10692         int i, err;
10693         s32 prev = S32_MIN;
10694
10695         /* Check all values negative and sorted */
10696         for (i = 0; i < n_thresholds; i++) {
10697                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10698                         return -EINVAL;
10699
10700                 prev = thresholds[i];
10701         }
10702
10703         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10704             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10705                 return -EOPNOTSUPP;
10706
10707         wdev_lock(wdev);
10708         cfg80211_cqm_config_free(wdev);
10709         wdev_unlock(wdev);
10710
10711         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10712                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10713                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10714
10715                 return rdev_set_cqm_rssi_config(rdev, dev,
10716                                                 thresholds[0], hysteresis);
10717         }
10718
10719         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10720                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10721                 return -EOPNOTSUPP;
10722
10723         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10724                 n_thresholds = 0;
10725
10726         wdev_lock(wdev);
10727         if (n_thresholds) {
10728                 struct cfg80211_cqm_config *cqm_config;
10729
10730                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10731                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10732                 if (!cqm_config) {
10733                         err = -ENOMEM;
10734                         goto unlock;
10735                 }
10736
10737                 cqm_config->rssi_hyst = hysteresis;
10738                 cqm_config->n_rssi_thresholds = n_thresholds;
10739                 memcpy(cqm_config->rssi_thresholds, thresholds,
10740                        n_thresholds * sizeof(s32));
10741
10742                 wdev->cqm_config = cqm_config;
10743         }
10744
10745         err = cfg80211_cqm_rssi_update(rdev, dev);
10746
10747 unlock:
10748         wdev_unlock(wdev);
10749
10750         return err;
10751 }
10752
10753 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10754 {
10755         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10756         struct nlattr *cqm;
10757         int err;
10758
10759         cqm = info->attrs[NL80211_ATTR_CQM];
10760         if (!cqm)
10761                 return -EINVAL;
10762
10763         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
10764                                           nl80211_attr_cqm_policy,
10765                                           info->extack);
10766         if (err)
10767                 return err;
10768
10769         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10770             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10771                 const s32 *thresholds =
10772                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10773                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10774                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10775
10776                 if (len % 4)
10777                         return -EINVAL;
10778
10779                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10780                                             hysteresis);
10781         }
10782
10783         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10784             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10785             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10786                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10787                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10788                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10789
10790                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10791         }
10792
10793         return -EINVAL;
10794 }
10795
10796 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10797 {
10798         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10799         struct net_device *dev = info->user_ptr[1];
10800         struct ocb_setup setup = {};
10801         int err;
10802
10803         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10804         if (err)
10805                 return err;
10806
10807         return cfg80211_join_ocb(rdev, dev, &setup);
10808 }
10809
10810 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10811 {
10812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10813         struct net_device *dev = info->user_ptr[1];
10814
10815         return cfg80211_leave_ocb(rdev, dev);
10816 }
10817
10818 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10819 {
10820         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10821         struct net_device *dev = info->user_ptr[1];
10822         struct mesh_config cfg;
10823         struct mesh_setup setup;
10824         int err;
10825
10826         /* start with default */
10827         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10828         memcpy(&setup, &default_mesh_setup, sizeof(setup));
10829
10830         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10831                 /* and parse parameters if given */
10832                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10833                 if (err)
10834                         return err;
10835         }
10836
10837         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10838             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10839                 return -EINVAL;
10840
10841         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10842         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10843
10844         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10845             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10846                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10847                         return -EINVAL;
10848
10849         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10850                 setup.beacon_interval =
10851                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10852
10853                 err = cfg80211_validate_beacon_int(rdev,
10854                                                    NL80211_IFTYPE_MESH_POINT,
10855                                                    setup.beacon_interval);
10856                 if (err)
10857                         return err;
10858         }
10859
10860         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10861                 setup.dtim_period =
10862                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10863                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10864                         return -EINVAL;
10865         }
10866
10867         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10868                 /* parse additional setup parameters if given */
10869                 err = nl80211_parse_mesh_setup(info, &setup);
10870                 if (err)
10871                         return err;
10872         }
10873
10874         if (setup.user_mpm)
10875                 cfg.auto_open_plinks = false;
10876
10877         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10878                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10879                 if (err)
10880                         return err;
10881         } else {
10882                 /* __cfg80211_join_mesh() will sort it out */
10883                 setup.chandef.chan = NULL;
10884         }
10885
10886         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10887                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10888                 int n_rates =
10889                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10890                 struct ieee80211_supported_band *sband;
10891
10892                 if (!setup.chandef.chan)
10893                         return -EINVAL;
10894
10895                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10896
10897                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10898                                              &setup.basic_rates);
10899                 if (err)
10900                         return err;
10901         }
10902
10903         if (info->attrs[NL80211_ATTR_TX_RATES]) {
10904                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10905                 if (err)
10906                         return err;
10907
10908                 if (!setup.chandef.chan)
10909                         return -EINVAL;
10910
10911                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10912                                               &setup.beacon_rate);
10913                 if (err)
10914                         return err;
10915         }
10916
10917         setup.userspace_handles_dfs =
10918                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10919
10920         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10921                 int r = validate_pae_over_nl80211(rdev, info);
10922
10923                 if (r < 0)
10924                         return r;
10925
10926                 setup.control_port_over_nl80211 = true;
10927         }
10928
10929         wdev_lock(dev->ieee80211_ptr);
10930         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10931         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
10932                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10933         wdev_unlock(dev->ieee80211_ptr);
10934
10935         return err;
10936 }
10937
10938 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10939 {
10940         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10941         struct net_device *dev = info->user_ptr[1];
10942
10943         return cfg80211_leave_mesh(rdev, dev);
10944 }
10945
10946 #ifdef CONFIG_PM
10947 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10948                                         struct cfg80211_registered_device *rdev)
10949 {
10950         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10951         struct nlattr *nl_pats, *nl_pat;
10952         int i, pat_len;
10953
10954         if (!wowlan->n_patterns)
10955                 return 0;
10956
10957         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10958         if (!nl_pats)
10959                 return -ENOBUFS;
10960
10961         for (i = 0; i < wowlan->n_patterns; i++) {
10962                 nl_pat = nla_nest_start_noflag(msg, i + 1);
10963                 if (!nl_pat)
10964                         return -ENOBUFS;
10965                 pat_len = wowlan->patterns[i].pattern_len;
10966                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10967                             wowlan->patterns[i].mask) ||
10968                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10969                             wowlan->patterns[i].pattern) ||
10970                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10971                                 wowlan->patterns[i].pkt_offset))
10972                         return -ENOBUFS;
10973                 nla_nest_end(msg, nl_pat);
10974         }
10975         nla_nest_end(msg, nl_pats);
10976
10977         return 0;
10978 }
10979
10980 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10981                                    struct cfg80211_wowlan_tcp *tcp)
10982 {
10983         struct nlattr *nl_tcp;
10984
10985         if (!tcp)
10986                 return 0;
10987
10988         nl_tcp = nla_nest_start_noflag(msg,
10989                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10990         if (!nl_tcp)
10991                 return -ENOBUFS;
10992
10993         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10994             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10995             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10996             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10997             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10998             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10999                     tcp->payload_len, tcp->payload) ||
11000             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11001                         tcp->data_interval) ||
11002             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11003                     tcp->wake_len, tcp->wake_data) ||
11004             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11005                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11006                 return -ENOBUFS;
11007
11008         if (tcp->payload_seq.len &&
11009             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11010                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11011                 return -ENOBUFS;
11012
11013         if (tcp->payload_tok.len &&
11014             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11015                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11016                     &tcp->payload_tok))
11017                 return -ENOBUFS;
11018
11019         nla_nest_end(msg, nl_tcp);
11020
11021         return 0;
11022 }
11023
11024 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11025                                   struct cfg80211_sched_scan_request *req)
11026 {
11027         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11028         int i;
11029
11030         if (!req)
11031                 return 0;
11032
11033         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11034         if (!nd)
11035                 return -ENOBUFS;
11036
11037         if (req->n_scan_plans == 1 &&
11038             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11039                         req->scan_plans[0].interval * 1000))
11040                 return -ENOBUFS;
11041
11042         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11043                 return -ENOBUFS;
11044
11045         if (req->relative_rssi_set) {
11046                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11047
11048                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11049                                req->relative_rssi))
11050                         return -ENOBUFS;
11051
11052                 rssi_adjust.band = req->rssi_adjust.band;
11053                 rssi_adjust.delta = req->rssi_adjust.delta;
11054                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11055                             sizeof(rssi_adjust), &rssi_adjust))
11056                         return -ENOBUFS;
11057         }
11058
11059         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11060         if (!freqs)
11061                 return -ENOBUFS;
11062
11063         for (i = 0; i < req->n_channels; i++) {
11064                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11065                         return -ENOBUFS;
11066         }
11067
11068         nla_nest_end(msg, freqs);
11069
11070         if (req->n_match_sets) {
11071                 matches = nla_nest_start_noflag(msg,
11072                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11073                 if (!matches)
11074                         return -ENOBUFS;
11075
11076                 for (i = 0; i < req->n_match_sets; i++) {
11077                         match = nla_nest_start_noflag(msg, i);
11078                         if (!match)
11079                                 return -ENOBUFS;
11080
11081                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11082                                     req->match_sets[i].ssid.ssid_len,
11083                                     req->match_sets[i].ssid.ssid))
11084                                 return -ENOBUFS;
11085                         nla_nest_end(msg, match);
11086                 }
11087                 nla_nest_end(msg, matches);
11088         }
11089
11090         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11091         if (!scan_plans)
11092                 return -ENOBUFS;
11093
11094         for (i = 0; i < req->n_scan_plans; i++) {
11095                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11096                 if (!scan_plan)
11097                         return -ENOBUFS;
11098
11099                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11100                                 req->scan_plans[i].interval) ||
11101                     (req->scan_plans[i].iterations &&
11102                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11103                                  req->scan_plans[i].iterations)))
11104                         return -ENOBUFS;
11105                 nla_nest_end(msg, scan_plan);
11106         }
11107         nla_nest_end(msg, scan_plans);
11108
11109         nla_nest_end(msg, nd);
11110
11111         return 0;
11112 }
11113
11114 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11115 {
11116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11117         struct sk_buff *msg;
11118         void *hdr;
11119         u32 size = NLMSG_DEFAULT_SIZE;
11120
11121         if (!rdev->wiphy.wowlan)
11122                 return -EOPNOTSUPP;
11123
11124         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11125                 /* adjust size to have room for all the data */
11126                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11127                         rdev->wiphy.wowlan_config->tcp->payload_len +
11128                         rdev->wiphy.wowlan_config->tcp->wake_len +
11129                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11130         }
11131
11132         msg = nlmsg_new(size, GFP_KERNEL);
11133         if (!msg)
11134                 return -ENOMEM;
11135
11136         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11137                              NL80211_CMD_GET_WOWLAN);
11138         if (!hdr)
11139                 goto nla_put_failure;
11140
11141         if (rdev->wiphy.wowlan_config) {
11142                 struct nlattr *nl_wowlan;
11143
11144                 nl_wowlan = nla_nest_start_noflag(msg,
11145                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11146                 if (!nl_wowlan)
11147                         goto nla_put_failure;
11148
11149                 if ((rdev->wiphy.wowlan_config->any &&
11150                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11151                     (rdev->wiphy.wowlan_config->disconnect &&
11152                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11153                     (rdev->wiphy.wowlan_config->magic_pkt &&
11154                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11155                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11156                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11157                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11158                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11159                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11160                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11161                     (rdev->wiphy.wowlan_config->rfkill_release &&
11162                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11163                         goto nla_put_failure;
11164
11165                 if (nl80211_send_wowlan_patterns(msg, rdev))
11166                         goto nla_put_failure;
11167
11168                 if (nl80211_send_wowlan_tcp(msg,
11169                                             rdev->wiphy.wowlan_config->tcp))
11170                         goto nla_put_failure;
11171
11172                 if (nl80211_send_wowlan_nd(
11173                             msg,
11174                             rdev->wiphy.wowlan_config->nd_config))
11175                         goto nla_put_failure;
11176
11177                 nla_nest_end(msg, nl_wowlan);
11178         }
11179
11180         genlmsg_end(msg, hdr);
11181         return genlmsg_reply(msg, info);
11182
11183 nla_put_failure:
11184         nlmsg_free(msg);
11185         return -ENOBUFS;
11186 }
11187
11188 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11189                                     struct nlattr *attr,
11190                                     struct cfg80211_wowlan *trig)
11191 {
11192         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11193         struct cfg80211_wowlan_tcp *cfg;
11194         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11195         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11196         u32 size;
11197         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11198         int err, port;
11199
11200         if (!rdev->wiphy.wowlan->tcp)
11201                 return -EINVAL;
11202
11203         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11204                                           nl80211_wowlan_tcp_policy, NULL);
11205         if (err)
11206                 return err;
11207
11208         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11209             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11210             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11211             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11212             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11213             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11214             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11215             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11216                 return -EINVAL;
11217
11218         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11219         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11220                 return -EINVAL;
11221
11222         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11223                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11224             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11225                 return -EINVAL;
11226
11227         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11228         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11229                 return -EINVAL;
11230
11231         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11232         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11233                 return -EINVAL;
11234
11235         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11236                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11237
11238                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11239                 tokens_size = tokln - sizeof(*tok);
11240
11241                 if (!tok->len || tokens_size % tok->len)
11242                         return -EINVAL;
11243                 if (!rdev->wiphy.wowlan->tcp->tok)
11244                         return -EINVAL;
11245                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11246                         return -EINVAL;
11247                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11248                         return -EINVAL;
11249                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11250                         return -EINVAL;
11251                 if (tok->offset + tok->len > data_size)
11252                         return -EINVAL;
11253         }
11254
11255         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11256                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11257                 if (!rdev->wiphy.wowlan->tcp->seq)
11258                         return -EINVAL;
11259                 if (seq->len == 0 || seq->len > 4)
11260                         return -EINVAL;
11261                 if (seq->len + seq->offset > data_size)
11262                         return -EINVAL;
11263         }
11264
11265         size = sizeof(*cfg);
11266         size += data_size;
11267         size += wake_size + wake_mask_size;
11268         size += tokens_size;
11269
11270         cfg = kzalloc(size, GFP_KERNEL);
11271         if (!cfg)
11272                 return -ENOMEM;
11273         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11274         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11275         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11276                ETH_ALEN);
11277         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11278                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11279         else
11280                 port = 0;
11281 #ifdef CONFIG_INET
11282         /* allocate a socket and port for it and use it */
11283         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11284                             IPPROTO_TCP, &cfg->sock, 1);
11285         if (err) {
11286                 kfree(cfg);
11287                 return err;
11288         }
11289         if (inet_csk_get_port(cfg->sock->sk, port)) {
11290                 sock_release(cfg->sock);
11291                 kfree(cfg);
11292                 return -EADDRINUSE;
11293         }
11294         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11295 #else
11296         if (!port) {
11297                 kfree(cfg);
11298                 return -EINVAL;
11299         }
11300         cfg->src_port = port;
11301 #endif
11302
11303         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11304         cfg->payload_len = data_size;
11305         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11306         memcpy((void *)cfg->payload,
11307                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11308                data_size);
11309         if (seq)
11310                 cfg->payload_seq = *seq;
11311         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11312         cfg->wake_len = wake_size;
11313         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11314         memcpy((void *)cfg->wake_data,
11315                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11316                wake_size);
11317         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11318                          data_size + wake_size;
11319         memcpy((void *)cfg->wake_mask,
11320                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11321                wake_mask_size);
11322         if (tok) {
11323                 cfg->tokens_size = tokens_size;
11324                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11325         }
11326
11327         trig->tcp = cfg;
11328
11329         return 0;
11330 }
11331
11332 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11333                                    const struct wiphy_wowlan_support *wowlan,
11334                                    struct nlattr *attr,
11335                                    struct cfg80211_wowlan *trig)
11336 {
11337         struct nlattr **tb;
11338         int err;
11339
11340         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11341         if (!tb)
11342                 return -ENOMEM;
11343
11344         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11345                 err = -EOPNOTSUPP;
11346                 goto out;
11347         }
11348
11349         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11350                                           nl80211_policy, NULL);
11351         if (err)
11352                 goto out;
11353
11354         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11355                                                    wowlan->max_nd_match_sets);
11356         err = PTR_ERR_OR_ZERO(trig->nd_config);
11357         if (err)
11358                 trig->nd_config = NULL;
11359
11360 out:
11361         kfree(tb);
11362         return err;
11363 }
11364
11365 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11366 {
11367         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11368         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11369         struct cfg80211_wowlan new_triggers = {};
11370         struct cfg80211_wowlan *ntrig;
11371         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11372         int err, i;
11373         bool prev_enabled = rdev->wiphy.wowlan_config;
11374         bool regular = false;
11375
11376         if (!wowlan)
11377                 return -EOPNOTSUPP;
11378
11379         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11380                 cfg80211_rdev_free_wowlan(rdev);
11381                 rdev->wiphy.wowlan_config = NULL;
11382                 goto set_wakeup;
11383         }
11384
11385         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11386                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11387                                           nl80211_wowlan_policy, info->extack);
11388         if (err)
11389                 return err;
11390
11391         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11392                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11393                         return -EINVAL;
11394                 new_triggers.any = true;
11395         }
11396
11397         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11398                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11399                         return -EINVAL;
11400                 new_triggers.disconnect = true;
11401                 regular = true;
11402         }
11403
11404         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11405                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11406                         return -EINVAL;
11407                 new_triggers.magic_pkt = true;
11408                 regular = true;
11409         }
11410
11411         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11412                 return -EINVAL;
11413
11414         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11415                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11416                         return -EINVAL;
11417                 new_triggers.gtk_rekey_failure = true;
11418                 regular = true;
11419         }
11420
11421         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11422                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11423                         return -EINVAL;
11424                 new_triggers.eap_identity_req = true;
11425                 regular = true;
11426         }
11427
11428         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11429                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11430                         return -EINVAL;
11431                 new_triggers.four_way_handshake = true;
11432                 regular = true;
11433         }
11434
11435         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11436                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11437                         return -EINVAL;
11438                 new_triggers.rfkill_release = true;
11439                 regular = true;
11440         }
11441
11442         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11443                 struct nlattr *pat;
11444                 int n_patterns = 0;
11445                 int rem, pat_len, mask_len, pkt_offset;
11446                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11447
11448                 regular = true;
11449
11450                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11451                                     rem)
11452                         n_patterns++;
11453                 if (n_patterns > wowlan->n_patterns)
11454                         return -EINVAL;
11455
11456                 new_triggers.patterns = kcalloc(n_patterns,
11457                                                 sizeof(new_triggers.patterns[0]),
11458                                                 GFP_KERNEL);
11459                 if (!new_triggers.patterns)
11460                         return -ENOMEM;
11461
11462                 new_triggers.n_patterns = n_patterns;
11463                 i = 0;
11464
11465                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11466                                     rem) {
11467                         u8 *mask_pat;
11468
11469                         err = nla_parse_nested_deprecated(pat_tb,
11470                                                           MAX_NL80211_PKTPAT,
11471                                                           pat,
11472                                                           nl80211_packet_pattern_policy,
11473                                                           info->extack);
11474                         if (err)
11475                                 goto error;
11476
11477                         err = -EINVAL;
11478                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11479                             !pat_tb[NL80211_PKTPAT_PATTERN])
11480                                 goto error;
11481                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11482                         mask_len = DIV_ROUND_UP(pat_len, 8);
11483                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11484                                 goto error;
11485                         if (pat_len > wowlan->pattern_max_len ||
11486                             pat_len < wowlan->pattern_min_len)
11487                                 goto error;
11488
11489                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11490                                 pkt_offset = 0;
11491                         else
11492                                 pkt_offset = nla_get_u32(
11493                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11494                         if (pkt_offset > wowlan->max_pkt_offset)
11495                                 goto error;
11496                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11497
11498                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11499                         if (!mask_pat) {
11500                                 err = -ENOMEM;
11501                                 goto error;
11502                         }
11503                         new_triggers.patterns[i].mask = mask_pat;
11504                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11505                                mask_len);
11506                         mask_pat += mask_len;
11507                         new_triggers.patterns[i].pattern = mask_pat;
11508                         new_triggers.patterns[i].pattern_len = pat_len;
11509                         memcpy(mask_pat,
11510                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11511                                pat_len);
11512                         i++;
11513                 }
11514         }
11515
11516         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11517                 regular = true;
11518                 err = nl80211_parse_wowlan_tcp(
11519                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11520                         &new_triggers);
11521                 if (err)
11522                         goto error;
11523         }
11524
11525         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11526                 regular = true;
11527                 err = nl80211_parse_wowlan_nd(
11528                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11529                         &new_triggers);
11530                 if (err)
11531                         goto error;
11532         }
11533
11534         /* The 'any' trigger means the device continues operating more or less
11535          * as in its normal operation mode and wakes up the host on most of the
11536          * normal interrupts (like packet RX, ...)
11537          * It therefore makes little sense to combine with the more constrained
11538          * wakeup trigger modes.
11539          */
11540         if (new_triggers.any && regular) {
11541                 err = -EINVAL;
11542                 goto error;
11543         }
11544
11545         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11546         if (!ntrig) {
11547                 err = -ENOMEM;
11548                 goto error;
11549         }
11550         cfg80211_rdev_free_wowlan(rdev);
11551         rdev->wiphy.wowlan_config = ntrig;
11552
11553  set_wakeup:
11554         if (rdev->ops->set_wakeup &&
11555             prev_enabled != !!rdev->wiphy.wowlan_config)
11556                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11557
11558         return 0;
11559  error:
11560         for (i = 0; i < new_triggers.n_patterns; i++)
11561                 kfree(new_triggers.patterns[i].mask);
11562         kfree(new_triggers.patterns);
11563         if (new_triggers.tcp && new_triggers.tcp->sock)
11564                 sock_release(new_triggers.tcp->sock);
11565         kfree(new_triggers.tcp);
11566         kfree(new_triggers.nd_config);
11567         return err;
11568 }
11569 #endif
11570
11571 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11572                                        struct cfg80211_registered_device *rdev)
11573 {
11574         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11575         int i, j, pat_len;
11576         struct cfg80211_coalesce_rules *rule;
11577
11578         if (!rdev->coalesce->n_rules)
11579                 return 0;
11580
11581         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11582         if (!nl_rules)
11583                 return -ENOBUFS;
11584
11585         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11586                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11587                 if (!nl_rule)
11588                         return -ENOBUFS;
11589
11590                 rule = &rdev->coalesce->rules[i];
11591                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11592                                 rule->delay))
11593                         return -ENOBUFS;
11594
11595                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11596                                 rule->condition))
11597                         return -ENOBUFS;
11598
11599                 nl_pats = nla_nest_start_noflag(msg,
11600                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11601                 if (!nl_pats)
11602                         return -ENOBUFS;
11603
11604                 for (j = 0; j < rule->n_patterns; j++) {
11605                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11606                         if (!nl_pat)
11607                                 return -ENOBUFS;
11608                         pat_len = rule->patterns[j].pattern_len;
11609                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11610                                     DIV_ROUND_UP(pat_len, 8),
11611                                     rule->patterns[j].mask) ||
11612                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11613                                     rule->patterns[j].pattern) ||
11614                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11615                                         rule->patterns[j].pkt_offset))
11616                                 return -ENOBUFS;
11617                         nla_nest_end(msg, nl_pat);
11618                 }
11619                 nla_nest_end(msg, nl_pats);
11620                 nla_nest_end(msg, nl_rule);
11621         }
11622         nla_nest_end(msg, nl_rules);
11623
11624         return 0;
11625 }
11626
11627 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11628 {
11629         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11630         struct sk_buff *msg;
11631         void *hdr;
11632
11633         if (!rdev->wiphy.coalesce)
11634                 return -EOPNOTSUPP;
11635
11636         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11637         if (!msg)
11638                 return -ENOMEM;
11639
11640         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11641                              NL80211_CMD_GET_COALESCE);
11642         if (!hdr)
11643                 goto nla_put_failure;
11644
11645         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11646                 goto nla_put_failure;
11647
11648         genlmsg_end(msg, hdr);
11649         return genlmsg_reply(msg, info);
11650
11651 nla_put_failure:
11652         nlmsg_free(msg);
11653         return -ENOBUFS;
11654 }
11655
11656 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11657 {
11658         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11659         int i, j;
11660         struct cfg80211_coalesce_rules *rule;
11661
11662         if (!coalesce)
11663                 return;
11664
11665         for (i = 0; i < coalesce->n_rules; i++) {
11666                 rule = &coalesce->rules[i];
11667                 for (j = 0; j < rule->n_patterns; j++)
11668                         kfree(rule->patterns[j].mask);
11669                 kfree(rule->patterns);
11670         }
11671         kfree(coalesce->rules);
11672         kfree(coalesce);
11673         rdev->coalesce = NULL;
11674 }
11675
11676 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11677                                        struct nlattr *rule,
11678                                        struct cfg80211_coalesce_rules *new_rule)
11679 {
11680         int err, i;
11681         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11682         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11683         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11684         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11685
11686         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
11687                                           rule, nl80211_coalesce_policy, NULL);
11688         if (err)
11689                 return err;
11690
11691         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11692                 new_rule->delay =
11693                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11694         if (new_rule->delay > coalesce->max_delay)
11695                 return -EINVAL;
11696
11697         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11698                 new_rule->condition =
11699                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11700
11701         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11702                 return -EINVAL;
11703
11704         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11705                             rem)
11706                 n_patterns++;
11707         if (n_patterns > coalesce->n_patterns)
11708                 return -EINVAL;
11709
11710         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11711                                      GFP_KERNEL);
11712         if (!new_rule->patterns)
11713                 return -ENOMEM;
11714
11715         new_rule->n_patterns = n_patterns;
11716         i = 0;
11717
11718         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11719                             rem) {
11720                 u8 *mask_pat;
11721
11722                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
11723                                                   pat,
11724                                                   nl80211_packet_pattern_policy,
11725                                                   NULL);
11726                 if (err)
11727                         return err;
11728
11729                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11730                     !pat_tb[NL80211_PKTPAT_PATTERN])
11731                         return -EINVAL;
11732                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11733                 mask_len = DIV_ROUND_UP(pat_len, 8);
11734                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11735                         return -EINVAL;
11736                 if (pat_len > coalesce->pattern_max_len ||
11737                     pat_len < coalesce->pattern_min_len)
11738                         return -EINVAL;
11739
11740                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11741                         pkt_offset = 0;
11742                 else
11743                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11744                 if (pkt_offset > coalesce->max_pkt_offset)
11745                         return -EINVAL;
11746                 new_rule->patterns[i].pkt_offset = pkt_offset;
11747
11748                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11749                 if (!mask_pat)
11750                         return -ENOMEM;
11751
11752                 new_rule->patterns[i].mask = mask_pat;
11753                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11754                        mask_len);
11755
11756                 mask_pat += mask_len;
11757                 new_rule->patterns[i].pattern = mask_pat;
11758                 new_rule->patterns[i].pattern_len = pat_len;
11759                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11760                        pat_len);
11761                 i++;
11762         }
11763
11764         return 0;
11765 }
11766
11767 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11768 {
11769         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11770         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11771         struct cfg80211_coalesce new_coalesce = {};
11772         struct cfg80211_coalesce *n_coalesce;
11773         int err, rem_rule, n_rules = 0, i, j;
11774         struct nlattr *rule;
11775         struct cfg80211_coalesce_rules *tmp_rule;
11776
11777         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11778                 return -EOPNOTSUPP;
11779
11780         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11781                 cfg80211_rdev_free_coalesce(rdev);
11782                 rdev_set_coalesce(rdev, NULL);
11783                 return 0;
11784         }
11785
11786         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11787                             rem_rule)
11788                 n_rules++;
11789         if (n_rules > coalesce->n_rules)
11790                 return -EINVAL;
11791
11792         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11793                                      GFP_KERNEL);
11794         if (!new_coalesce.rules)
11795                 return -ENOMEM;
11796
11797         new_coalesce.n_rules = n_rules;
11798         i = 0;
11799
11800         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11801                             rem_rule) {
11802                 err = nl80211_parse_coalesce_rule(rdev, rule,
11803                                                   &new_coalesce.rules[i]);
11804                 if (err)
11805                         goto error;
11806
11807                 i++;
11808         }
11809
11810         err = rdev_set_coalesce(rdev, &new_coalesce);
11811         if (err)
11812                 goto error;
11813
11814         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11815         if (!n_coalesce) {
11816                 err = -ENOMEM;
11817                 goto error;
11818         }
11819         cfg80211_rdev_free_coalesce(rdev);
11820         rdev->coalesce = n_coalesce;
11821
11822         return 0;
11823 error:
11824         for (i = 0; i < new_coalesce.n_rules; i++) {
11825                 tmp_rule = &new_coalesce.rules[i];
11826                 for (j = 0; j < tmp_rule->n_patterns; j++)
11827                         kfree(tmp_rule->patterns[j].mask);
11828                 kfree(tmp_rule->patterns);
11829         }
11830         kfree(new_coalesce.rules);
11831
11832         return err;
11833 }
11834
11835 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
11836 {
11837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11838         struct net_device *dev = info->user_ptr[1];
11839         struct wireless_dev *wdev = dev->ieee80211_ptr;
11840         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11841         struct cfg80211_gtk_rekey_data rekey_data;
11842         int err;
11843
11844         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11845                 return -EINVAL;
11846
11847         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
11848                                           info->attrs[NL80211_ATTR_REKEY_DATA],
11849                                           nl80211_rekey_policy, info->extack);
11850         if (err)
11851                 return err;
11852
11853         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11854             !tb[NL80211_REKEY_DATA_KCK])
11855                 return -EINVAL;
11856         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11857                 return -ERANGE;
11858         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11859                 return -ERANGE;
11860         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11861                 return -ERANGE;
11862
11863         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11864         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11865         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11866
11867         wdev_lock(wdev);
11868         if (!wdev->current_bss) {
11869                 err = -ENOTCONN;
11870                 goto out;
11871         }
11872
11873         if (!rdev->ops->set_rekey_data) {
11874                 err = -EOPNOTSUPP;
11875                 goto out;
11876         }
11877
11878         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11879  out:
11880         wdev_unlock(wdev);
11881         return err;
11882 }
11883
11884 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11885                                              struct genl_info *info)
11886 {
11887         struct net_device *dev = info->user_ptr[1];
11888         struct wireless_dev *wdev = dev->ieee80211_ptr;
11889
11890         if (wdev->iftype != NL80211_IFTYPE_AP &&
11891             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11892                 return -EINVAL;
11893
11894         if (wdev->ap_unexpected_nlportid)
11895                 return -EBUSY;
11896
11897         wdev->ap_unexpected_nlportid = info->snd_portid;
11898         return 0;
11899 }
11900
11901 static int nl80211_probe_client(struct sk_buff *skb,
11902                                 struct genl_info *info)
11903 {
11904         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11905         struct net_device *dev = info->user_ptr[1];
11906         struct wireless_dev *wdev = dev->ieee80211_ptr;
11907         struct sk_buff *msg;
11908         void *hdr;
11909         const u8 *addr;
11910         u64 cookie;
11911         int err;
11912
11913         if (wdev->iftype != NL80211_IFTYPE_AP &&
11914             wdev->iftype != NL80211_IFTYPE_P2P_GO)
11915                 return -EOPNOTSUPP;
11916
11917         if (!info->attrs[NL80211_ATTR_MAC])
11918                 return -EINVAL;
11919
11920         if (!rdev->ops->probe_client)
11921                 return -EOPNOTSUPP;
11922
11923         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11924         if (!msg)
11925                 return -ENOMEM;
11926
11927         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11928                              NL80211_CMD_PROBE_CLIENT);
11929         if (!hdr) {
11930                 err = -ENOBUFS;
11931                 goto free_msg;
11932         }
11933
11934         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11935
11936         err = rdev_probe_client(rdev, dev, addr, &cookie);
11937         if (err)
11938                 goto free_msg;
11939
11940         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11941                               NL80211_ATTR_PAD))
11942                 goto nla_put_failure;
11943
11944         genlmsg_end(msg, hdr);
11945
11946         return genlmsg_reply(msg, info);
11947
11948  nla_put_failure:
11949         err = -ENOBUFS;
11950  free_msg:
11951         nlmsg_free(msg);
11952         return err;
11953 }
11954
11955 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11956 {
11957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11958         struct cfg80211_beacon_registration *reg, *nreg;
11959         int rv;
11960
11961         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11962                 return -EOPNOTSUPP;
11963
11964         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11965         if (!nreg)
11966                 return -ENOMEM;
11967
11968         /* First, check if already registered. */
11969         spin_lock_bh(&rdev->beacon_registrations_lock);
11970         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11971                 if (reg->nlportid == info->snd_portid) {
11972                         rv = -EALREADY;
11973                         goto out_err;
11974                 }
11975         }
11976         /* Add it to the list */
11977         nreg->nlportid = info->snd_portid;
11978         list_add(&nreg->list, &rdev->beacon_registrations);
11979
11980         spin_unlock_bh(&rdev->beacon_registrations_lock);
11981
11982         return 0;
11983 out_err:
11984         spin_unlock_bh(&rdev->beacon_registrations_lock);
11985         kfree(nreg);
11986         return rv;
11987 }
11988
11989 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11990 {
11991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11992         struct wireless_dev *wdev = info->user_ptr[1];
11993         int err;
11994
11995         if (!rdev->ops->start_p2p_device)
11996                 return -EOPNOTSUPP;
11997
11998         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11999                 return -EOPNOTSUPP;
12000
12001         if (wdev_running(wdev))
12002                 return 0;
12003
12004         if (rfkill_blocked(rdev->rfkill))
12005                 return -ERFKILL;
12006
12007         err = rdev_start_p2p_device(rdev, wdev);
12008         if (err)
12009                 return err;
12010
12011         wdev->is_running = true;
12012         rdev->opencount++;
12013
12014         return 0;
12015 }
12016
12017 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12018 {
12019         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12020         struct wireless_dev *wdev = info->user_ptr[1];
12021
12022         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12023                 return -EOPNOTSUPP;
12024
12025         if (!rdev->ops->stop_p2p_device)
12026                 return -EOPNOTSUPP;
12027
12028         cfg80211_stop_p2p_device(rdev, wdev);
12029
12030         return 0;
12031 }
12032
12033 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12034 {
12035         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12036         struct wireless_dev *wdev = info->user_ptr[1];
12037         struct cfg80211_nan_conf conf = {};
12038         int err;
12039
12040         if (wdev->iftype != NL80211_IFTYPE_NAN)
12041                 return -EOPNOTSUPP;
12042
12043         if (wdev_running(wdev))
12044                 return -EEXIST;
12045
12046         if (rfkill_blocked(rdev->rfkill))
12047                 return -ERFKILL;
12048
12049         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12050                 return -EINVAL;
12051
12052         conf.master_pref =
12053                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12054
12055         if (info->attrs[NL80211_ATTR_BANDS]) {
12056                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12057
12058                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12059                         return -EOPNOTSUPP;
12060
12061                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12062                         return -EINVAL;
12063
12064                 conf.bands = bands;
12065         }
12066
12067         err = rdev_start_nan(rdev, wdev, &conf);
12068         if (err)
12069                 return err;
12070
12071         wdev->is_running = true;
12072         rdev->opencount++;
12073
12074         return 0;
12075 }
12076
12077 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12078 {
12079         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12080         struct wireless_dev *wdev = info->user_ptr[1];
12081
12082         if (wdev->iftype != NL80211_IFTYPE_NAN)
12083                 return -EOPNOTSUPP;
12084
12085         cfg80211_stop_nan(rdev, wdev);
12086
12087         return 0;
12088 }
12089
12090 static int validate_nan_filter(struct nlattr *filter_attr)
12091 {
12092         struct nlattr *attr;
12093         int len = 0, n_entries = 0, rem;
12094
12095         nla_for_each_nested(attr, filter_attr, rem) {
12096                 len += nla_len(attr);
12097                 n_entries++;
12098         }
12099
12100         if (len >= U8_MAX)
12101                 return -EINVAL;
12102
12103         return n_entries;
12104 }
12105
12106 static int handle_nan_filter(struct nlattr *attr_filter,
12107                              struct cfg80211_nan_func *func,
12108                              bool tx)
12109 {
12110         struct nlattr *attr;
12111         int n_entries, rem, i;
12112         struct cfg80211_nan_func_filter *filter;
12113
12114         n_entries = validate_nan_filter(attr_filter);
12115         if (n_entries < 0)
12116                 return n_entries;
12117
12118         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12119
12120         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12121         if (!filter)
12122                 return -ENOMEM;
12123
12124         i = 0;
12125         nla_for_each_nested(attr, attr_filter, rem) {
12126                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12127                 filter[i].len = nla_len(attr);
12128                 i++;
12129         }
12130         if (tx) {
12131                 func->num_tx_filters = n_entries;
12132                 func->tx_filters = filter;
12133         } else {
12134                 func->num_rx_filters = n_entries;
12135                 func->rx_filters = filter;
12136         }
12137
12138         return 0;
12139 }
12140
12141 static int nl80211_nan_add_func(struct sk_buff *skb,
12142                                 struct genl_info *info)
12143 {
12144         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12145         struct wireless_dev *wdev = info->user_ptr[1];
12146         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12147         struct cfg80211_nan_func *func;
12148         struct sk_buff *msg = NULL;
12149         void *hdr = NULL;
12150         int err = 0;
12151
12152         if (wdev->iftype != NL80211_IFTYPE_NAN)
12153                 return -EOPNOTSUPP;
12154
12155         if (!wdev_running(wdev))
12156                 return -ENOTCONN;
12157
12158         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12159                 return -EINVAL;
12160
12161         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12162                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12163                                           nl80211_nan_func_policy,
12164                                           info->extack);
12165         if (err)
12166                 return err;
12167
12168         func = kzalloc(sizeof(*func), GFP_KERNEL);
12169         if (!func)
12170                 return -ENOMEM;
12171
12172         func->cookie = cfg80211_assign_cookie(rdev);
12173
12174         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12175             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12176                 err = -EINVAL;
12177                 goto out;
12178         }
12179
12180
12181         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12182
12183         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12184                 err = -EINVAL;
12185                 goto out;
12186         }
12187
12188         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12189                sizeof(func->service_id));
12190
12191         func->close_range =
12192                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12193
12194         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12195                 func->serv_spec_info_len =
12196                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12197                 func->serv_spec_info =
12198                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12199                                 func->serv_spec_info_len,
12200                                 GFP_KERNEL);
12201                 if (!func->serv_spec_info) {
12202                         err = -ENOMEM;
12203                         goto out;
12204                 }
12205         }
12206
12207         if (tb[NL80211_NAN_FUNC_TTL])
12208                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12209
12210         switch (func->type) {
12211         case NL80211_NAN_FUNC_PUBLISH:
12212                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12213                         err = -EINVAL;
12214                         goto out;
12215                 }
12216
12217                 func->publish_type =
12218                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12219                 func->publish_bcast =
12220                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12221
12222                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12223                         func->publish_bcast) {
12224                         err = -EINVAL;
12225                         goto out;
12226                 }
12227                 break;
12228         case NL80211_NAN_FUNC_SUBSCRIBE:
12229                 func->subscribe_active =
12230                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12231                 break;
12232         case NL80211_NAN_FUNC_FOLLOW_UP:
12233                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12234                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12235                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12236                         err = -EINVAL;
12237                         goto out;
12238                 }
12239
12240                 func->followup_id =
12241                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12242                 func->followup_reqid =
12243                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12244                 memcpy(func->followup_dest.addr,
12245                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12246                        sizeof(func->followup_dest.addr));
12247                 if (func->ttl) {
12248                         err = -EINVAL;
12249                         goto out;
12250                 }
12251                 break;
12252         default:
12253                 err = -EINVAL;
12254                 goto out;
12255         }
12256
12257         if (tb[NL80211_NAN_FUNC_SRF]) {
12258                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12259
12260                 err = nla_parse_nested_deprecated(srf_tb,
12261                                                   NL80211_NAN_SRF_ATTR_MAX,
12262                                                   tb[NL80211_NAN_FUNC_SRF],
12263                                                   nl80211_nan_srf_policy,
12264                                                   info->extack);
12265                 if (err)
12266                         goto out;
12267
12268                 func->srf_include =
12269                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12270
12271                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12272                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12273                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12274                                 err = -EINVAL;
12275                                 goto out;
12276                         }
12277
12278                         func->srf_bf_len =
12279                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12280                         func->srf_bf =
12281                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12282                                         func->srf_bf_len, GFP_KERNEL);
12283                         if (!func->srf_bf) {
12284                                 err = -ENOMEM;
12285                                 goto out;
12286                         }
12287
12288                         func->srf_bf_idx =
12289                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12290                 } else {
12291                         struct nlattr *attr, *mac_attr =
12292                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12293                         int n_entries, rem, i = 0;
12294
12295                         if (!mac_attr) {
12296                                 err = -EINVAL;
12297                                 goto out;
12298                         }
12299
12300                         n_entries = validate_acl_mac_addrs(mac_attr);
12301                         if (n_entries <= 0) {
12302                                 err = -EINVAL;
12303                                 goto out;
12304                         }
12305
12306                         func->srf_num_macs = n_entries;
12307                         func->srf_macs =
12308                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12309                                         GFP_KERNEL);
12310                         if (!func->srf_macs) {
12311                                 err = -ENOMEM;
12312                                 goto out;
12313                         }
12314
12315                         nla_for_each_nested(attr, mac_attr, rem)
12316                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12317                                        sizeof(*func->srf_macs));
12318                 }
12319         }
12320
12321         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12322                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12323                                         func, true);
12324                 if (err)
12325                         goto out;
12326         }
12327
12328         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12329                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12330                                         func, false);
12331                 if (err)
12332                         goto out;
12333         }
12334
12335         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12336         if (!msg) {
12337                 err = -ENOMEM;
12338                 goto out;
12339         }
12340
12341         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12342                              NL80211_CMD_ADD_NAN_FUNCTION);
12343         /* This can't really happen - we just allocated 4KB */
12344         if (WARN_ON(!hdr)) {
12345                 err = -ENOMEM;
12346                 goto out;
12347         }
12348
12349         err = rdev_add_nan_func(rdev, wdev, func);
12350 out:
12351         if (err < 0) {
12352                 cfg80211_free_nan_func(func);
12353                 nlmsg_free(msg);
12354                 return err;
12355         }
12356
12357         /* propagate the instance id and cookie to userspace  */
12358         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12359                               NL80211_ATTR_PAD))
12360                 goto nla_put_failure;
12361
12362         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12363         if (!func_attr)
12364                 goto nla_put_failure;
12365
12366         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12367                        func->instance_id))
12368                 goto nla_put_failure;
12369
12370         nla_nest_end(msg, func_attr);
12371
12372         genlmsg_end(msg, hdr);
12373         return genlmsg_reply(msg, info);
12374
12375 nla_put_failure:
12376         nlmsg_free(msg);
12377         return -ENOBUFS;
12378 }
12379
12380 static int nl80211_nan_del_func(struct sk_buff *skb,
12381                                struct genl_info *info)
12382 {
12383         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12384         struct wireless_dev *wdev = info->user_ptr[1];
12385         u64 cookie;
12386
12387         if (wdev->iftype != NL80211_IFTYPE_NAN)
12388                 return -EOPNOTSUPP;
12389
12390         if (!wdev_running(wdev))
12391                 return -ENOTCONN;
12392
12393         if (!info->attrs[NL80211_ATTR_COOKIE])
12394                 return -EINVAL;
12395
12396         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12397
12398         rdev_del_nan_func(rdev, wdev, cookie);
12399
12400         return 0;
12401 }
12402
12403 static int nl80211_nan_change_config(struct sk_buff *skb,
12404                                      struct genl_info *info)
12405 {
12406         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12407         struct wireless_dev *wdev = info->user_ptr[1];
12408         struct cfg80211_nan_conf conf = {};
12409         u32 changed = 0;
12410
12411         if (wdev->iftype != NL80211_IFTYPE_NAN)
12412                 return -EOPNOTSUPP;
12413
12414         if (!wdev_running(wdev))
12415                 return -ENOTCONN;
12416
12417         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12418                 conf.master_pref =
12419                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12420                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12421                         return -EINVAL;
12422
12423                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12424         }
12425
12426         if (info->attrs[NL80211_ATTR_BANDS]) {
12427                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12428
12429                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12430                         return -EOPNOTSUPP;
12431
12432                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12433                         return -EINVAL;
12434
12435                 conf.bands = bands;
12436                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12437         }
12438
12439         if (!changed)
12440                 return -EINVAL;
12441
12442         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12443 }
12444
12445 void cfg80211_nan_match(struct wireless_dev *wdev,
12446                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12447 {
12448         struct wiphy *wiphy = wdev->wiphy;
12449         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12450         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12451         struct sk_buff *msg;
12452         void *hdr;
12453
12454         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12455                 return;
12456
12457         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12458         if (!msg)
12459                 return;
12460
12461         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12462         if (!hdr) {
12463                 nlmsg_free(msg);
12464                 return;
12465         }
12466
12467         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12468             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12469                                          wdev->netdev->ifindex)) ||
12470             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12471                               NL80211_ATTR_PAD))
12472                 goto nla_put_failure;
12473
12474         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12475                               NL80211_ATTR_PAD) ||
12476             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12477                 goto nla_put_failure;
12478
12479         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12480         if (!match_attr)
12481                 goto nla_put_failure;
12482
12483         local_func_attr = nla_nest_start_noflag(msg,
12484                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12485         if (!local_func_attr)
12486                 goto nla_put_failure;
12487
12488         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12489                 goto nla_put_failure;
12490
12491         nla_nest_end(msg, local_func_attr);
12492
12493         peer_func_attr = nla_nest_start_noflag(msg,
12494                                                NL80211_NAN_MATCH_FUNC_PEER);
12495         if (!peer_func_attr)
12496                 goto nla_put_failure;
12497
12498         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12499             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12500                 goto nla_put_failure;
12501
12502         if (match->info && match->info_len &&
12503             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12504                     match->info))
12505                 goto nla_put_failure;
12506
12507         nla_nest_end(msg, peer_func_attr);
12508         nla_nest_end(msg, match_attr);
12509         genlmsg_end(msg, hdr);
12510
12511         if (!wdev->owner_nlportid)
12512                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12513                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12514         else
12515                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12516                                 wdev->owner_nlportid);
12517
12518         return;
12519
12520 nla_put_failure:
12521         nlmsg_free(msg);
12522 }
12523 EXPORT_SYMBOL(cfg80211_nan_match);
12524
12525 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12526                                   u8 inst_id,
12527                                   enum nl80211_nan_func_term_reason reason,
12528                                   u64 cookie, gfp_t gfp)
12529 {
12530         struct wiphy *wiphy = wdev->wiphy;
12531         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12532         struct sk_buff *msg;
12533         struct nlattr *func_attr;
12534         void *hdr;
12535
12536         if (WARN_ON(!inst_id))
12537                 return;
12538
12539         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12540         if (!msg)
12541                 return;
12542
12543         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12544         if (!hdr) {
12545                 nlmsg_free(msg);
12546                 return;
12547         }
12548
12549         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12550             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12551                                          wdev->netdev->ifindex)) ||
12552             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12553                               NL80211_ATTR_PAD))
12554                 goto nla_put_failure;
12555
12556         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12557                               NL80211_ATTR_PAD))
12558                 goto nla_put_failure;
12559
12560         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12561         if (!func_attr)
12562                 goto nla_put_failure;
12563
12564         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12565             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12566                 goto nla_put_failure;
12567
12568         nla_nest_end(msg, func_attr);
12569         genlmsg_end(msg, hdr);
12570
12571         if (!wdev->owner_nlportid)
12572                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12573                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12574         else
12575                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12576                                 wdev->owner_nlportid);
12577
12578         return;
12579
12580 nla_put_failure:
12581         nlmsg_free(msg);
12582 }
12583 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12584
12585 static int nl80211_get_protocol_features(struct sk_buff *skb,
12586                                          struct genl_info *info)
12587 {
12588         void *hdr;
12589         struct sk_buff *msg;
12590
12591         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12592         if (!msg)
12593                 return -ENOMEM;
12594
12595         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12596                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12597         if (!hdr)
12598                 goto nla_put_failure;
12599
12600         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12601                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12602                 goto nla_put_failure;
12603
12604         genlmsg_end(msg, hdr);
12605         return genlmsg_reply(msg, info);
12606
12607  nla_put_failure:
12608         kfree_skb(msg);
12609         return -ENOBUFS;
12610 }
12611
12612 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12613 {
12614         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12615         struct cfg80211_update_ft_ies_params ft_params;
12616         struct net_device *dev = info->user_ptr[1];
12617
12618         if (!rdev->ops->update_ft_ies)
12619                 return -EOPNOTSUPP;
12620
12621         if (!info->attrs[NL80211_ATTR_MDID] ||
12622             !info->attrs[NL80211_ATTR_IE])
12623                 return -EINVAL;
12624
12625         memset(&ft_params, 0, sizeof(ft_params));
12626         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12627         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12628         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12629
12630         return rdev_update_ft_ies(rdev, dev, &ft_params);
12631 }
12632
12633 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12634                                        struct genl_info *info)
12635 {
12636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12637         struct wireless_dev *wdev = info->user_ptr[1];
12638         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12639         u16 duration;
12640         int ret;
12641
12642         if (!rdev->ops->crit_proto_start)
12643                 return -EOPNOTSUPP;
12644
12645         if (WARN_ON(!rdev->ops->crit_proto_stop))
12646                 return -EINVAL;
12647
12648         if (rdev->crit_proto_nlportid)
12649                 return -EBUSY;
12650
12651         /* determine protocol if provided */
12652         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12653                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12654
12655         if (proto >= NUM_NL80211_CRIT_PROTO)
12656                 return -EINVAL;
12657
12658         /* timeout must be provided */
12659         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12660                 return -EINVAL;
12661
12662         duration =
12663                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12664
12665         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12666                 return -ERANGE;
12667
12668         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12669         if (!ret)
12670                 rdev->crit_proto_nlportid = info->snd_portid;
12671
12672         return ret;
12673 }
12674
12675 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12676                                       struct genl_info *info)
12677 {
12678         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12679         struct wireless_dev *wdev = info->user_ptr[1];
12680
12681         if (!rdev->ops->crit_proto_stop)
12682                 return -EOPNOTSUPP;
12683
12684         if (rdev->crit_proto_nlportid) {
12685                 rdev->crit_proto_nlportid = 0;
12686                 rdev_crit_proto_stop(rdev, wdev);
12687         }
12688         return 0;
12689 }
12690
12691 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
12692                                        struct nlattr *attr,
12693                                        struct netlink_ext_ack *extack)
12694 {
12695         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
12696                 if (attr->nla_type & NLA_F_NESTED) {
12697                         NL_SET_ERR_MSG_ATTR(extack, attr,
12698                                             "unexpected nested data");
12699                         return -EINVAL;
12700                 }
12701
12702                 return 0;
12703         }
12704
12705         if (!(attr->nla_type & NLA_F_NESTED)) {
12706                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
12707                 return -EINVAL;
12708         }
12709
12710         return nl80211_validate_nested(attr, vcmd->maxattr, vcmd->policy,
12711                                        extack);
12712 }
12713
12714 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12715 {
12716         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12717         struct wireless_dev *wdev =
12718                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12719         int i, err;
12720         u32 vid, subcmd;
12721
12722         if (!rdev->wiphy.vendor_commands)
12723                 return -EOPNOTSUPP;
12724
12725         if (IS_ERR(wdev)) {
12726                 err = PTR_ERR(wdev);
12727                 if (err != -EINVAL)
12728                         return err;
12729                 wdev = NULL;
12730         } else if (wdev->wiphy != &rdev->wiphy) {
12731                 return -EINVAL;
12732         }
12733
12734         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12735             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12736                 return -EINVAL;
12737
12738         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12739         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12740         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12741                 const struct wiphy_vendor_command *vcmd;
12742                 void *data = NULL;
12743                 int len = 0;
12744
12745                 vcmd = &rdev->wiphy.vendor_commands[i];
12746
12747                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12748                         continue;
12749
12750                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12751                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12752                         if (!wdev)
12753                                 return -EINVAL;
12754                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12755                             !wdev->netdev)
12756                                 return -EINVAL;
12757
12758                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12759                                 if (!wdev_running(wdev))
12760                                         return -ENETDOWN;
12761                         }
12762
12763                         if (!vcmd->doit)
12764                                 return -EOPNOTSUPP;
12765                 } else {
12766                         wdev = NULL;
12767                 }
12768
12769                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12770                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12771                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12772
12773                         err = nl80211_vendor_check_policy(vcmd,
12774                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
12775                                         info->extack);
12776                         if (err)
12777                                 return err;
12778                 }
12779
12780                 rdev->cur_cmd_info = info;
12781                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
12782                 rdev->cur_cmd_info = NULL;
12783                 return err;
12784         }
12785
12786         return -EOPNOTSUPP;
12787 }
12788
12789 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12790                                        struct netlink_callback *cb,
12791                                        struct cfg80211_registered_device **rdev,
12792                                        struct wireless_dev **wdev)
12793 {
12794         struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
12795         u32 vid, subcmd;
12796         unsigned int i;
12797         int vcmd_idx = -1;
12798         int err;
12799         void *data = NULL;
12800         unsigned int data_len = 0;
12801
12802         if (cb->args[0]) {
12803                 /* subtract the 1 again here */
12804                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12805                 struct wireless_dev *tmp;
12806
12807                 if (!wiphy)
12808                         return -ENODEV;
12809                 *rdev = wiphy_to_rdev(wiphy);
12810                 *wdev = NULL;
12811
12812                 if (cb->args[1]) {
12813                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12814                                 if (tmp->identifier == cb->args[1] - 1) {
12815                                         *wdev = tmp;
12816                                         break;
12817                                 }
12818                         }
12819                 }
12820
12821                 /* keep rtnl locked in successful case */
12822                 return 0;
12823         }
12824
12825         err = nlmsg_parse_deprecated(cb->nlh,
12826                                      GENL_HDRLEN + nl80211_fam.hdrsize,
12827                                      attrbuf, nl80211_fam.maxattr,
12828                                      nl80211_policy, NULL);
12829         if (err)
12830                 return err;
12831
12832         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
12833             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
12834                 return -EINVAL;
12835
12836         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
12837         if (IS_ERR(*wdev))
12838                 *wdev = NULL;
12839
12840         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
12841         if (IS_ERR(*rdev))
12842                 return PTR_ERR(*rdev);
12843
12844         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
12845         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
12846
12847         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
12848                 const struct wiphy_vendor_command *vcmd;
12849
12850                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
12851
12852                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12853                         continue;
12854
12855                 if (!vcmd->dumpit)
12856                         return -EOPNOTSUPP;
12857
12858                 vcmd_idx = i;
12859                 break;
12860         }
12861
12862         if (vcmd_idx < 0)
12863                 return -EOPNOTSUPP;
12864
12865         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
12866                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12867                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
12868
12869                 err = nl80211_vendor_check_policy(
12870                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
12871                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
12872                                 cb->extack);
12873                 if (err)
12874                         return err;
12875         }
12876
12877         /* 0 is the first index - add 1 to parse only once */
12878         cb->args[0] = (*rdev)->wiphy_idx + 1;
12879         /* add 1 to know if it was NULL */
12880         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12881         cb->args[2] = vcmd_idx;
12882         cb->args[3] = (unsigned long)data;
12883         cb->args[4] = data_len;
12884
12885         /* keep rtnl locked in successful case */
12886         return 0;
12887 }
12888
12889 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12890                                    struct netlink_callback *cb)
12891 {
12892         struct cfg80211_registered_device *rdev;
12893         struct wireless_dev *wdev;
12894         unsigned int vcmd_idx;
12895         const struct wiphy_vendor_command *vcmd;
12896         void *data;
12897         int data_len;
12898         int err;
12899         struct nlattr *vendor_data;
12900
12901         rtnl_lock();
12902         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12903         if (err)
12904                 goto out;
12905
12906         vcmd_idx = cb->args[2];
12907         data = (void *)cb->args[3];
12908         data_len = cb->args[4];
12909         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12910
12911         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12912                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12913                 if (!wdev) {
12914                         err = -EINVAL;
12915                         goto out;
12916                 }
12917                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12918                     !wdev->netdev) {
12919                         err = -EINVAL;
12920                         goto out;
12921                 }
12922
12923                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12924                         if (!wdev_running(wdev)) {
12925                                 err = -ENETDOWN;
12926                                 goto out;
12927                         }
12928                 }
12929         }
12930
12931         while (1) {
12932                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12933                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
12934                                            NL80211_CMD_VENDOR);
12935                 if (!hdr)
12936                         break;
12937
12938                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12939                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12940                                                wdev_id(wdev),
12941                                                NL80211_ATTR_PAD))) {
12942                         genlmsg_cancel(skb, hdr);
12943                         break;
12944                 }
12945
12946                 vendor_data = nla_nest_start_noflag(skb,
12947                                                     NL80211_ATTR_VENDOR_DATA);
12948                 if (!vendor_data) {
12949                         genlmsg_cancel(skb, hdr);
12950                         break;
12951                 }
12952
12953                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12954                                    (unsigned long *)&cb->args[5]);
12955                 nla_nest_end(skb, vendor_data);
12956
12957                 if (err == -ENOBUFS || err == -ENOENT) {
12958                         genlmsg_cancel(skb, hdr);
12959                         break;
12960                 } else if (err) {
12961                         genlmsg_cancel(skb, hdr);
12962                         goto out;
12963                 }
12964
12965                 genlmsg_end(skb, hdr);
12966         }
12967
12968         err = skb->len;
12969  out:
12970         rtnl_unlock();
12971         return err;
12972 }
12973
12974 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12975                                            enum nl80211_commands cmd,
12976                                            enum nl80211_attrs attr,
12977                                            int approxlen)
12978 {
12979         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12980
12981         if (WARN_ON(!rdev->cur_cmd_info))
12982                 return NULL;
12983
12984         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12985                                            rdev->cur_cmd_info->snd_portid,
12986                                            rdev->cur_cmd_info->snd_seq,
12987                                            cmd, attr, NULL, GFP_KERNEL);
12988 }
12989 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12990
12991 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12992 {
12993         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12994         void *hdr = ((void **)skb->cb)[1];
12995         struct nlattr *data = ((void **)skb->cb)[2];
12996
12997         /* clear CB data for netlink core to own from now on */
12998         memset(skb->cb, 0, sizeof(skb->cb));
12999
13000         if (WARN_ON(!rdev->cur_cmd_info)) {
13001                 kfree_skb(skb);
13002                 return -EINVAL;
13003         }
13004
13005         nla_nest_end(skb, data);
13006         genlmsg_end(skb, hdr);
13007         return genlmsg_reply(skb, rdev->cur_cmd_info);
13008 }
13009 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13010
13011 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13012 {
13013         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13014
13015         if (WARN_ON(!rdev->cur_cmd_info))
13016                 return 0;
13017
13018         return rdev->cur_cmd_info->snd_portid;
13019 }
13020 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13021
13022 static int nl80211_set_qos_map(struct sk_buff *skb,
13023                                struct genl_info *info)
13024 {
13025         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13026         struct cfg80211_qos_map *qos_map = NULL;
13027         struct net_device *dev = info->user_ptr[1];
13028         u8 *pos, len, num_des, des_len, des;
13029         int ret;
13030
13031         if (!rdev->ops->set_qos_map)
13032                 return -EOPNOTSUPP;
13033
13034         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13035                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13036                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13037
13038                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13039                     len > IEEE80211_QOS_MAP_LEN_MAX)
13040                         return -EINVAL;
13041
13042                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13043                 if (!qos_map)
13044                         return -ENOMEM;
13045
13046                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13047                 if (num_des) {
13048                         des_len = num_des *
13049                                 sizeof(struct cfg80211_dscp_exception);
13050                         memcpy(qos_map->dscp_exception, pos, des_len);
13051                         qos_map->num_des = num_des;
13052                         for (des = 0; des < num_des; des++) {
13053                                 if (qos_map->dscp_exception[des].up > 7) {
13054                                         kfree(qos_map);
13055                                         return -EINVAL;
13056                                 }
13057                         }
13058                         pos += des_len;
13059                 }
13060                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13061         }
13062
13063         wdev_lock(dev->ieee80211_ptr);
13064         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13065         if (!ret)
13066                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13067         wdev_unlock(dev->ieee80211_ptr);
13068
13069         kfree(qos_map);
13070         return ret;
13071 }
13072
13073 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13074 {
13075         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13076         struct net_device *dev = info->user_ptr[1];
13077         struct wireless_dev *wdev = dev->ieee80211_ptr;
13078         const u8 *peer;
13079         u8 tsid, up;
13080         u16 admitted_time = 0;
13081         int err;
13082
13083         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13084                 return -EOPNOTSUPP;
13085
13086         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13087             !info->attrs[NL80211_ATTR_USER_PRIO])
13088                 return -EINVAL;
13089
13090         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13091         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13092
13093         /* WMM uses TIDs 0-7 even for TSPEC */
13094         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13095                 /* TODO: handle 802.11 TSPEC/admission control
13096                  * need more attributes for that (e.g. BA session requirement);
13097                  * change the WMM adminssion test above to allow both then
13098                  */
13099                 return -EINVAL;
13100         }
13101
13102         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13103
13104         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13105                 admitted_time =
13106                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13107                 if (!admitted_time)
13108                         return -EINVAL;
13109         }
13110
13111         wdev_lock(wdev);
13112         switch (wdev->iftype) {
13113         case NL80211_IFTYPE_STATION:
13114         case NL80211_IFTYPE_P2P_CLIENT:
13115                 if (wdev->current_bss)
13116                         break;
13117                 err = -ENOTCONN;
13118                 goto out;
13119         default:
13120                 err = -EOPNOTSUPP;
13121                 goto out;
13122         }
13123
13124         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13125
13126  out:
13127         wdev_unlock(wdev);
13128         return err;
13129 }
13130
13131 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13132 {
13133         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13134         struct net_device *dev = info->user_ptr[1];
13135         struct wireless_dev *wdev = dev->ieee80211_ptr;
13136         const u8 *peer;
13137         u8 tsid;
13138         int err;
13139
13140         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13141                 return -EINVAL;
13142
13143         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13144         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13145
13146         wdev_lock(wdev);
13147         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13148         wdev_unlock(wdev);
13149
13150         return err;
13151 }
13152
13153 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13154                                        struct genl_info *info)
13155 {
13156         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13157         struct net_device *dev = info->user_ptr[1];
13158         struct wireless_dev *wdev = dev->ieee80211_ptr;
13159         struct cfg80211_chan_def chandef = {};
13160         const u8 *addr;
13161         u8 oper_class;
13162         int err;
13163
13164         if (!rdev->ops->tdls_channel_switch ||
13165             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13166                 return -EOPNOTSUPP;
13167
13168         switch (dev->ieee80211_ptr->iftype) {
13169         case NL80211_IFTYPE_STATION:
13170         case NL80211_IFTYPE_P2P_CLIENT:
13171                 break;
13172         default:
13173                 return -EOPNOTSUPP;
13174         }
13175
13176         if (!info->attrs[NL80211_ATTR_MAC] ||
13177             !info->attrs[NL80211_ATTR_OPER_CLASS])
13178                 return -EINVAL;
13179
13180         err = nl80211_parse_chandef(rdev, info, &chandef);
13181         if (err)
13182                 return err;
13183
13184         /*
13185          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13186          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13187          * specification is not defined for them.
13188          */
13189         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13190             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13191             chandef.width != NL80211_CHAN_WIDTH_20)
13192                 return -EINVAL;
13193
13194         /* we will be active on the TDLS link */
13195         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13196                                            wdev->iftype))
13197                 return -EINVAL;
13198
13199         /* don't allow switching to DFS channels */
13200         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13201                 return -EINVAL;
13202
13203         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13204         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13205
13206         wdev_lock(wdev);
13207         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13208         wdev_unlock(wdev);
13209
13210         return err;
13211 }
13212
13213 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13214                                               struct genl_info *info)
13215 {
13216         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13217         struct net_device *dev = info->user_ptr[1];
13218         struct wireless_dev *wdev = dev->ieee80211_ptr;
13219         const u8 *addr;
13220
13221         if (!rdev->ops->tdls_channel_switch ||
13222             !rdev->ops->tdls_cancel_channel_switch ||
13223             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13224                 return -EOPNOTSUPP;
13225
13226         switch (dev->ieee80211_ptr->iftype) {
13227         case NL80211_IFTYPE_STATION:
13228         case NL80211_IFTYPE_P2P_CLIENT:
13229                 break;
13230         default:
13231                 return -EOPNOTSUPP;
13232         }
13233
13234         if (!info->attrs[NL80211_ATTR_MAC])
13235                 return -EINVAL;
13236
13237         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13238
13239         wdev_lock(wdev);
13240         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13241         wdev_unlock(wdev);
13242
13243         return 0;
13244 }
13245
13246 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13247                                             struct genl_info *info)
13248 {
13249         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13250         struct net_device *dev = info->user_ptr[1];
13251         struct wireless_dev *wdev = dev->ieee80211_ptr;
13252         const struct nlattr *nla;
13253         bool enabled;
13254
13255         if (!rdev->ops->set_multicast_to_unicast)
13256                 return -EOPNOTSUPP;
13257
13258         if (wdev->iftype != NL80211_IFTYPE_AP &&
13259             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13260                 return -EOPNOTSUPP;
13261
13262         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13263         enabled = nla_get_flag(nla);
13264
13265         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13266 }
13267
13268 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13269 {
13270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13271         struct net_device *dev = info->user_ptr[1];
13272         struct wireless_dev *wdev = dev->ieee80211_ptr;
13273         struct cfg80211_pmk_conf pmk_conf = {};
13274         int ret;
13275
13276         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13277             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13278                 return -EOPNOTSUPP;
13279
13280         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13281                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13282                 return -EOPNOTSUPP;
13283
13284         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13285                 return -EINVAL;
13286
13287         wdev_lock(wdev);
13288         if (!wdev->current_bss) {
13289                 ret = -ENOTCONN;
13290                 goto out;
13291         }
13292
13293         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13294         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13295                 ret = -EINVAL;
13296                 goto out;
13297         }
13298
13299         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13300         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13301         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13302             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13303                 ret = -EINVAL;
13304                 goto out;
13305         }
13306
13307         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13308                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13309
13310                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13311                         ret = -EINVAL;
13312                         goto out;
13313                 }
13314
13315                 pmk_conf.pmk_r0_name =
13316                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13317         }
13318
13319         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13320 out:
13321         wdev_unlock(wdev);
13322         return ret;
13323 }
13324
13325 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13326 {
13327         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13328         struct net_device *dev = info->user_ptr[1];
13329         struct wireless_dev *wdev = dev->ieee80211_ptr;
13330         const u8 *aa;
13331         int ret;
13332
13333         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13334             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13335                 return -EOPNOTSUPP;
13336
13337         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13338                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13339                 return -EOPNOTSUPP;
13340
13341         if (!info->attrs[NL80211_ATTR_MAC])
13342                 return -EINVAL;
13343
13344         wdev_lock(wdev);
13345         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13346         ret = rdev_del_pmk(rdev, dev, aa);
13347         wdev_unlock(wdev);
13348
13349         return ret;
13350 }
13351
13352 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13353 {
13354         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13355         struct net_device *dev = info->user_ptr[1];
13356         struct cfg80211_external_auth_params params;
13357
13358         if (!rdev->ops->external_auth)
13359                 return -EOPNOTSUPP;
13360
13361         if (!info->attrs[NL80211_ATTR_SSID] &&
13362             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13363             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13364                 return -EINVAL;
13365
13366         if (!info->attrs[NL80211_ATTR_BSSID])
13367                 return -EINVAL;
13368
13369         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13370                 return -EINVAL;
13371
13372         memset(&params, 0, sizeof(params));
13373
13374         if (info->attrs[NL80211_ATTR_SSID]) {
13375                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13376                 if (params.ssid.ssid_len == 0 ||
13377                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13378                         return -EINVAL;
13379                 memcpy(params.ssid.ssid,
13380                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13381                        params.ssid.ssid_len);
13382         }
13383
13384         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13385                ETH_ALEN);
13386
13387         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13388
13389         if (info->attrs[NL80211_ATTR_PMKID])
13390                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13391
13392         return rdev_external_auth(rdev, dev, &params);
13393 }
13394
13395 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13396 {
13397         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13398         struct net_device *dev = info->user_ptr[1];
13399         struct wireless_dev *wdev = dev->ieee80211_ptr;
13400         const u8 *buf;
13401         size_t len;
13402         u8 *dest;
13403         u16 proto;
13404         bool noencrypt;
13405         int err;
13406
13407         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13408                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13409                 return -EOPNOTSUPP;
13410
13411         if (!rdev->ops->tx_control_port)
13412                 return -EOPNOTSUPP;
13413
13414         if (!info->attrs[NL80211_ATTR_FRAME] ||
13415             !info->attrs[NL80211_ATTR_MAC] ||
13416             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13417                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13418                 return -EINVAL;
13419         }
13420
13421         wdev_lock(wdev);
13422
13423         switch (wdev->iftype) {
13424         case NL80211_IFTYPE_AP:
13425         case NL80211_IFTYPE_P2P_GO:
13426         case NL80211_IFTYPE_MESH_POINT:
13427                 break;
13428         case NL80211_IFTYPE_ADHOC:
13429         case NL80211_IFTYPE_STATION:
13430         case NL80211_IFTYPE_P2P_CLIENT:
13431                 if (wdev->current_bss)
13432                         break;
13433                 err = -ENOTCONN;
13434                 goto out;
13435         default:
13436                 err = -EOPNOTSUPP;
13437                 goto out;
13438         }
13439
13440         wdev_unlock(wdev);
13441
13442         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13443         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13444         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13445         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13446         noencrypt =
13447                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13448
13449         return rdev_tx_control_port(rdev, dev, buf, len,
13450                                     dest, cpu_to_be16(proto), noencrypt);
13451
13452  out:
13453         wdev_unlock(wdev);
13454         return err;
13455 }
13456
13457 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13458                                            struct genl_info *info)
13459 {
13460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13461         struct net_device *dev = info->user_ptr[1];
13462         struct wireless_dev *wdev = dev->ieee80211_ptr;
13463         struct cfg80211_ftm_responder_stats ftm_stats = {};
13464         struct sk_buff *msg;
13465         void *hdr;
13466         struct nlattr *ftm_stats_attr;
13467         int err;
13468
13469         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13470                 return -EOPNOTSUPP;
13471
13472         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13473         if (err)
13474                 return err;
13475
13476         if (!ftm_stats.filled)
13477                 return -ENODATA;
13478
13479         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13480         if (!msg)
13481                 return -ENOMEM;
13482
13483         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13484                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13485         if (!hdr)
13486                 return -ENOBUFS;
13487
13488         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13489                 goto nla_put_failure;
13490
13491         ftm_stats_attr = nla_nest_start_noflag(msg,
13492                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13493         if (!ftm_stats_attr)
13494                 goto nla_put_failure;
13495
13496 #define SET_FTM(field, name, type)                                       \
13497         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13498             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13499                              ftm_stats.field))                           \
13500                 goto nla_put_failure; } while (0)
13501 #define SET_FTM_U64(field, name)                                         \
13502         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13503             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13504                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13505                 goto nla_put_failure; } while (0)
13506
13507         SET_FTM(success_num, SUCCESS_NUM, u32);
13508         SET_FTM(partial_num, PARTIAL_NUM, u32);
13509         SET_FTM(failed_num, FAILED_NUM, u32);
13510         SET_FTM(asap_num, ASAP_NUM, u32);
13511         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13512         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13513         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13514         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13515         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13516 #undef SET_FTM
13517
13518         nla_nest_end(msg, ftm_stats_attr);
13519
13520         genlmsg_end(msg, hdr);
13521         return genlmsg_reply(msg, info);
13522
13523 nla_put_failure:
13524         nlmsg_free(msg);
13525         return -ENOBUFS;
13526 }
13527
13528 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13529 {
13530         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13531         struct cfg80211_update_owe_info owe_info;
13532         struct net_device *dev = info->user_ptr[1];
13533
13534         if (!rdev->ops->update_owe_info)
13535                 return -EOPNOTSUPP;
13536
13537         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13538             !info->attrs[NL80211_ATTR_MAC])
13539                 return -EINVAL;
13540
13541         memset(&owe_info, 0, sizeof(owe_info));
13542         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13543         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13544
13545         if (info->attrs[NL80211_ATTR_IE]) {
13546                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13547                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13548         }
13549
13550         return rdev_update_owe_info(rdev, dev, &owe_info);
13551 }
13552
13553 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13554 {
13555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13556         struct net_device *dev = info->user_ptr[1];
13557         struct wireless_dev *wdev = dev->ieee80211_ptr;
13558         struct station_info sinfo = {};
13559         const u8 *buf;
13560         size_t len;
13561         u8 *dest;
13562         int err;
13563
13564         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13565                 return -EOPNOTSUPP;
13566
13567         if (!info->attrs[NL80211_ATTR_MAC] ||
13568             !info->attrs[NL80211_ATTR_FRAME]) {
13569                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13570                 return -EINVAL;
13571         }
13572
13573         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13574                 return -EOPNOTSUPP;
13575
13576         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13577         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13578         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13579
13580         if (len < sizeof(struct ethhdr))
13581                 return -EINVAL;
13582
13583         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13584             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13585                 return -EINVAL;
13586
13587         err = rdev_get_station(rdev, dev, dest, &sinfo);
13588         if (err)
13589                 return err;
13590
13591         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13592 }
13593
13594 #define NL80211_FLAG_NEED_WIPHY         0x01
13595 #define NL80211_FLAG_NEED_NETDEV        0x02
13596 #define NL80211_FLAG_NEED_RTNL          0x04
13597 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
13598 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
13599                                          NL80211_FLAG_CHECK_NETDEV_UP)
13600 #define NL80211_FLAG_NEED_WDEV          0x10
13601 /* If a netdev is associated, it must be UP, P2P must be started */
13602 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
13603                                          NL80211_FLAG_CHECK_NETDEV_UP)
13604 #define NL80211_FLAG_CLEAR_SKB          0x20
13605
13606 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13607                             struct genl_info *info)
13608 {
13609         struct cfg80211_registered_device *rdev;
13610         struct wireless_dev *wdev;
13611         struct net_device *dev;
13612         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13613
13614         if (rtnl)
13615                 rtnl_lock();
13616
13617         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13618                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13619                 if (IS_ERR(rdev)) {
13620                         if (rtnl)
13621                                 rtnl_unlock();
13622                         return PTR_ERR(rdev);
13623                 }
13624                 info->user_ptr[0] = rdev;
13625         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13626                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13627                 ASSERT_RTNL();
13628
13629                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13630                                                   info->attrs);
13631                 if (IS_ERR(wdev)) {
13632                         if (rtnl)
13633                                 rtnl_unlock();
13634                         return PTR_ERR(wdev);
13635                 }
13636
13637                 dev = wdev->netdev;
13638                 rdev = wiphy_to_rdev(wdev->wiphy);
13639
13640                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13641                         if (!dev) {
13642                                 if (rtnl)
13643                                         rtnl_unlock();
13644                                 return -EINVAL;
13645                         }
13646
13647                         info->user_ptr[1] = dev;
13648                 } else {
13649                         info->user_ptr[1] = wdev;
13650                 }
13651
13652                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13653                     !wdev_running(wdev)) {
13654                         if (rtnl)
13655                                 rtnl_unlock();
13656                         return -ENETDOWN;
13657                 }
13658
13659                 if (dev)
13660                         dev_hold(dev);
13661
13662                 info->user_ptr[0] = rdev;
13663         }
13664
13665         return 0;
13666 }
13667
13668 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13669                               struct genl_info *info)
13670 {
13671         if (info->user_ptr[1]) {
13672                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13673                         struct wireless_dev *wdev = info->user_ptr[1];
13674
13675                         if (wdev->netdev)
13676                                 dev_put(wdev->netdev);
13677                 } else {
13678                         dev_put(info->user_ptr[1]);
13679                 }
13680         }
13681
13682         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13683                 rtnl_unlock();
13684
13685         /* If needed, clear the netlink message payload from the SKB
13686          * as it might contain key data that shouldn't stick around on
13687          * the heap after the SKB is freed. The netlink message header
13688          * is still needed for further processing, so leave it intact.
13689          */
13690         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13691                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13692
13693                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13694         }
13695 }
13696
13697 static const struct genl_ops nl80211_ops[] = {
13698         {
13699                 .cmd = NL80211_CMD_GET_WIPHY,
13700                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13701                 .doit = nl80211_get_wiphy,
13702                 .dumpit = nl80211_dump_wiphy,
13703                 .done = nl80211_dump_wiphy_done,
13704                 /* can be retrieved by unprivileged users */
13705                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13706                                   NL80211_FLAG_NEED_RTNL,
13707         },
13708         {
13709                 .cmd = NL80211_CMD_SET_WIPHY,
13710                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13711                 .doit = nl80211_set_wiphy,
13712                 .flags = GENL_UNS_ADMIN_PERM,
13713                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13714         },
13715         {
13716                 .cmd = NL80211_CMD_GET_INTERFACE,
13717                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13718                 .doit = nl80211_get_interface,
13719                 .dumpit = nl80211_dump_interface,
13720                 /* can be retrieved by unprivileged users */
13721                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13722                                   NL80211_FLAG_NEED_RTNL,
13723         },
13724         {
13725                 .cmd = NL80211_CMD_SET_INTERFACE,
13726                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13727                 .doit = nl80211_set_interface,
13728                 .flags = GENL_UNS_ADMIN_PERM,
13729                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13730                                   NL80211_FLAG_NEED_RTNL,
13731         },
13732         {
13733                 .cmd = NL80211_CMD_NEW_INTERFACE,
13734                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13735                 .doit = nl80211_new_interface,
13736                 .flags = GENL_UNS_ADMIN_PERM,
13737                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13738                                   NL80211_FLAG_NEED_RTNL,
13739         },
13740         {
13741                 .cmd = NL80211_CMD_DEL_INTERFACE,
13742                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13743                 .doit = nl80211_del_interface,
13744                 .flags = GENL_UNS_ADMIN_PERM,
13745                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13746                                   NL80211_FLAG_NEED_RTNL,
13747         },
13748         {
13749                 .cmd = NL80211_CMD_GET_KEY,
13750                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13751                 .doit = nl80211_get_key,
13752                 .flags = GENL_UNS_ADMIN_PERM,
13753                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13754                                   NL80211_FLAG_NEED_RTNL,
13755         },
13756         {
13757                 .cmd = NL80211_CMD_SET_KEY,
13758                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13759                 .doit = nl80211_set_key,
13760                 .flags = GENL_UNS_ADMIN_PERM,
13761                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13762                                   NL80211_FLAG_NEED_RTNL |
13763                                   NL80211_FLAG_CLEAR_SKB,
13764         },
13765         {
13766                 .cmd = NL80211_CMD_NEW_KEY,
13767                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13768                 .doit = nl80211_new_key,
13769                 .flags = GENL_UNS_ADMIN_PERM,
13770                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13771                                   NL80211_FLAG_NEED_RTNL |
13772                                   NL80211_FLAG_CLEAR_SKB,
13773         },
13774         {
13775                 .cmd = NL80211_CMD_DEL_KEY,
13776                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13777                 .doit = nl80211_del_key,
13778                 .flags = GENL_UNS_ADMIN_PERM,
13779                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13780                                   NL80211_FLAG_NEED_RTNL,
13781         },
13782         {
13783                 .cmd = NL80211_CMD_SET_BEACON,
13784                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13785                 .flags = GENL_UNS_ADMIN_PERM,
13786                 .doit = nl80211_set_beacon,
13787                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13788                                   NL80211_FLAG_NEED_RTNL,
13789         },
13790         {
13791                 .cmd = NL80211_CMD_START_AP,
13792                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13793                 .flags = GENL_UNS_ADMIN_PERM,
13794                 .doit = nl80211_start_ap,
13795                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13796                                   NL80211_FLAG_NEED_RTNL,
13797         },
13798         {
13799                 .cmd = NL80211_CMD_STOP_AP,
13800                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13801                 .flags = GENL_UNS_ADMIN_PERM,
13802                 .doit = nl80211_stop_ap,
13803                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13804                                   NL80211_FLAG_NEED_RTNL,
13805         },
13806         {
13807                 .cmd = NL80211_CMD_GET_STATION,
13808                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13809                 .doit = nl80211_get_station,
13810                 .dumpit = nl80211_dump_station,
13811                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13812                                   NL80211_FLAG_NEED_RTNL,
13813         },
13814         {
13815                 .cmd = NL80211_CMD_SET_STATION,
13816                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13817                 .doit = nl80211_set_station,
13818                 .flags = GENL_UNS_ADMIN_PERM,
13819                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13820                                   NL80211_FLAG_NEED_RTNL,
13821         },
13822         {
13823                 .cmd = NL80211_CMD_NEW_STATION,
13824                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13825                 .doit = nl80211_new_station,
13826                 .flags = GENL_UNS_ADMIN_PERM,
13827                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13828                                   NL80211_FLAG_NEED_RTNL,
13829         },
13830         {
13831                 .cmd = NL80211_CMD_DEL_STATION,
13832                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13833                 .doit = nl80211_del_station,
13834                 .flags = GENL_UNS_ADMIN_PERM,
13835                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13836                                   NL80211_FLAG_NEED_RTNL,
13837         },
13838         {
13839                 .cmd = NL80211_CMD_GET_MPATH,
13840                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13841                 .doit = nl80211_get_mpath,
13842                 .dumpit = nl80211_dump_mpath,
13843                 .flags = GENL_UNS_ADMIN_PERM,
13844                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13845                                   NL80211_FLAG_NEED_RTNL,
13846         },
13847         {
13848                 .cmd = NL80211_CMD_GET_MPP,
13849                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13850                 .doit = nl80211_get_mpp,
13851                 .dumpit = nl80211_dump_mpp,
13852                 .flags = GENL_UNS_ADMIN_PERM,
13853                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13854                                   NL80211_FLAG_NEED_RTNL,
13855         },
13856         {
13857                 .cmd = NL80211_CMD_SET_MPATH,
13858                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13859                 .doit = nl80211_set_mpath,
13860                 .flags = GENL_UNS_ADMIN_PERM,
13861                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13862                                   NL80211_FLAG_NEED_RTNL,
13863         },
13864         {
13865                 .cmd = NL80211_CMD_NEW_MPATH,
13866                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13867                 .doit = nl80211_new_mpath,
13868                 .flags = GENL_UNS_ADMIN_PERM,
13869                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13870                                   NL80211_FLAG_NEED_RTNL,
13871         },
13872         {
13873                 .cmd = NL80211_CMD_DEL_MPATH,
13874                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13875                 .doit = nl80211_del_mpath,
13876                 .flags = GENL_UNS_ADMIN_PERM,
13877                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13878                                   NL80211_FLAG_NEED_RTNL,
13879         },
13880         {
13881                 .cmd = NL80211_CMD_SET_BSS,
13882                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13883                 .doit = nl80211_set_bss,
13884                 .flags = GENL_UNS_ADMIN_PERM,
13885                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13886                                   NL80211_FLAG_NEED_RTNL,
13887         },
13888         {
13889                 .cmd = NL80211_CMD_GET_REG,
13890                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13891                 .doit = nl80211_get_reg_do,
13892                 .dumpit = nl80211_get_reg_dump,
13893                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13894                 /* can be retrieved by unprivileged users */
13895         },
13896 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
13897         {
13898                 .cmd = NL80211_CMD_SET_REG,
13899                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13900                 .doit = nl80211_set_reg,
13901                 .flags = GENL_ADMIN_PERM,
13902                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13903         },
13904 #endif
13905         {
13906                 .cmd = NL80211_CMD_REQ_SET_REG,
13907                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13908                 .doit = nl80211_req_set_reg,
13909                 .flags = GENL_ADMIN_PERM,
13910         },
13911         {
13912                 .cmd = NL80211_CMD_RELOAD_REGDB,
13913                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13914                 .doit = nl80211_reload_regdb,
13915                 .flags = GENL_ADMIN_PERM,
13916         },
13917         {
13918                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
13919                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13920                 .doit = nl80211_get_mesh_config,
13921                 /* can be retrieved by unprivileged users */
13922                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13923                                   NL80211_FLAG_NEED_RTNL,
13924         },
13925         {
13926                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
13927                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13928                 .doit = nl80211_update_mesh_config,
13929                 .flags = GENL_UNS_ADMIN_PERM,
13930                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13931                                   NL80211_FLAG_NEED_RTNL,
13932         },
13933         {
13934                 .cmd = NL80211_CMD_TRIGGER_SCAN,
13935                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13936                 .doit = nl80211_trigger_scan,
13937                 .flags = GENL_UNS_ADMIN_PERM,
13938                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13939                                   NL80211_FLAG_NEED_RTNL,
13940         },
13941         {
13942                 .cmd = NL80211_CMD_ABORT_SCAN,
13943                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13944                 .doit = nl80211_abort_scan,
13945                 .flags = GENL_UNS_ADMIN_PERM,
13946                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13947                                   NL80211_FLAG_NEED_RTNL,
13948         },
13949         {
13950                 .cmd = NL80211_CMD_GET_SCAN,
13951                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13952                 .dumpit = nl80211_dump_scan,
13953         },
13954         {
13955                 .cmd = NL80211_CMD_START_SCHED_SCAN,
13956                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13957                 .doit = nl80211_start_sched_scan,
13958                 .flags = GENL_UNS_ADMIN_PERM,
13959                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13960                                   NL80211_FLAG_NEED_RTNL,
13961         },
13962         {
13963                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
13964                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13965                 .doit = nl80211_stop_sched_scan,
13966                 .flags = GENL_UNS_ADMIN_PERM,
13967                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13968                                   NL80211_FLAG_NEED_RTNL,
13969         },
13970         {
13971                 .cmd = NL80211_CMD_AUTHENTICATE,
13972                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13973                 .doit = nl80211_authenticate,
13974                 .flags = GENL_UNS_ADMIN_PERM,
13975                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13976                                   NL80211_FLAG_NEED_RTNL |
13977                                   NL80211_FLAG_CLEAR_SKB,
13978         },
13979         {
13980                 .cmd = NL80211_CMD_ASSOCIATE,
13981                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13982                 .doit = nl80211_associate,
13983                 .flags = GENL_UNS_ADMIN_PERM,
13984                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13985                                   NL80211_FLAG_NEED_RTNL |
13986                                   NL80211_FLAG_CLEAR_SKB,
13987         },
13988         {
13989                 .cmd = NL80211_CMD_DEAUTHENTICATE,
13990                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13991                 .doit = nl80211_deauthenticate,
13992                 .flags = GENL_UNS_ADMIN_PERM,
13993                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13994                                   NL80211_FLAG_NEED_RTNL,
13995         },
13996         {
13997                 .cmd = NL80211_CMD_DISASSOCIATE,
13998                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13999                 .doit = nl80211_disassociate,
14000                 .flags = GENL_UNS_ADMIN_PERM,
14001                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14002                                   NL80211_FLAG_NEED_RTNL,
14003         },
14004         {
14005                 .cmd = NL80211_CMD_JOIN_IBSS,
14006                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14007                 .doit = nl80211_join_ibss,
14008                 .flags = GENL_UNS_ADMIN_PERM,
14009                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14010                                   NL80211_FLAG_NEED_RTNL,
14011         },
14012         {
14013                 .cmd = NL80211_CMD_LEAVE_IBSS,
14014                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14015                 .doit = nl80211_leave_ibss,
14016                 .flags = GENL_UNS_ADMIN_PERM,
14017                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14018                                   NL80211_FLAG_NEED_RTNL,
14019         },
14020 #ifdef CONFIG_NL80211_TESTMODE
14021         {
14022                 .cmd = NL80211_CMD_TESTMODE,
14023                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14024                 .doit = nl80211_testmode_do,
14025                 .dumpit = nl80211_testmode_dump,
14026                 .flags = GENL_UNS_ADMIN_PERM,
14027                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14028                                   NL80211_FLAG_NEED_RTNL,
14029         },
14030 #endif
14031         {
14032                 .cmd = NL80211_CMD_CONNECT,
14033                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14034                 .doit = nl80211_connect,
14035                 .flags = GENL_UNS_ADMIN_PERM,
14036                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14037                                   NL80211_FLAG_NEED_RTNL |
14038                                   NL80211_FLAG_CLEAR_SKB,
14039         },
14040         {
14041                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14042                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14043                 .doit = nl80211_update_connect_params,
14044                 .flags = GENL_ADMIN_PERM,
14045                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14046                                   NL80211_FLAG_NEED_RTNL |
14047                                   NL80211_FLAG_CLEAR_SKB,
14048         },
14049         {
14050                 .cmd = NL80211_CMD_DISCONNECT,
14051                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14052                 .doit = nl80211_disconnect,
14053                 .flags = GENL_UNS_ADMIN_PERM,
14054                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14055                                   NL80211_FLAG_NEED_RTNL,
14056         },
14057         {
14058                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14059                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14060                 .doit = nl80211_wiphy_netns,
14061                 .flags = GENL_UNS_ADMIN_PERM,
14062                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14063                                   NL80211_FLAG_NEED_RTNL,
14064         },
14065         {
14066                 .cmd = NL80211_CMD_GET_SURVEY,
14067                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14068                 .dumpit = nl80211_dump_survey,
14069         },
14070         {
14071                 .cmd = NL80211_CMD_SET_PMKSA,
14072                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14073                 .doit = nl80211_setdel_pmksa,
14074                 .flags = GENL_UNS_ADMIN_PERM,
14075                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14076                                   NL80211_FLAG_NEED_RTNL |
14077                                   NL80211_FLAG_CLEAR_SKB,
14078         },
14079         {
14080                 .cmd = NL80211_CMD_DEL_PMKSA,
14081                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14082                 .doit = nl80211_setdel_pmksa,
14083                 .flags = GENL_UNS_ADMIN_PERM,
14084                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14085                                   NL80211_FLAG_NEED_RTNL,
14086         },
14087         {
14088                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14089                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14090                 .doit = nl80211_flush_pmksa,
14091                 .flags = GENL_UNS_ADMIN_PERM,
14092                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14093                                   NL80211_FLAG_NEED_RTNL,
14094         },
14095         {
14096                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14097                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14098                 .doit = nl80211_remain_on_channel,
14099                 .flags = GENL_UNS_ADMIN_PERM,
14100                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14101                                   NL80211_FLAG_NEED_RTNL,
14102         },
14103         {
14104                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14105                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14106                 .doit = nl80211_cancel_remain_on_channel,
14107                 .flags = GENL_UNS_ADMIN_PERM,
14108                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14109                                   NL80211_FLAG_NEED_RTNL,
14110         },
14111         {
14112                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14113                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14114                 .doit = nl80211_set_tx_bitrate_mask,
14115                 .flags = GENL_UNS_ADMIN_PERM,
14116                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14117                                   NL80211_FLAG_NEED_RTNL,
14118         },
14119         {
14120                 .cmd = NL80211_CMD_REGISTER_FRAME,
14121                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14122                 .doit = nl80211_register_mgmt,
14123                 .flags = GENL_UNS_ADMIN_PERM,
14124                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14125                                   NL80211_FLAG_NEED_RTNL,
14126         },
14127         {
14128                 .cmd = NL80211_CMD_FRAME,
14129                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14130                 .doit = nl80211_tx_mgmt,
14131                 .flags = GENL_UNS_ADMIN_PERM,
14132                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14133                                   NL80211_FLAG_NEED_RTNL,
14134         },
14135         {
14136                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14137                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14138                 .doit = nl80211_tx_mgmt_cancel_wait,
14139                 .flags = GENL_UNS_ADMIN_PERM,
14140                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14141                                   NL80211_FLAG_NEED_RTNL,
14142         },
14143         {
14144                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14145                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14146                 .doit = nl80211_set_power_save,
14147                 .flags = GENL_UNS_ADMIN_PERM,
14148                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14149                                   NL80211_FLAG_NEED_RTNL,
14150         },
14151         {
14152                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14153                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14154                 .doit = nl80211_get_power_save,
14155                 /* can be retrieved by unprivileged users */
14156                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14157                                   NL80211_FLAG_NEED_RTNL,
14158         },
14159         {
14160                 .cmd = NL80211_CMD_SET_CQM,
14161                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14162                 .doit = nl80211_set_cqm,
14163                 .flags = GENL_UNS_ADMIN_PERM,
14164                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14165                                   NL80211_FLAG_NEED_RTNL,
14166         },
14167         {
14168                 .cmd = NL80211_CMD_SET_CHANNEL,
14169                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14170                 .doit = nl80211_set_channel,
14171                 .flags = GENL_UNS_ADMIN_PERM,
14172                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14173                                   NL80211_FLAG_NEED_RTNL,
14174         },
14175         {
14176                 .cmd = NL80211_CMD_SET_WDS_PEER,
14177                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14178                 .doit = nl80211_set_wds_peer,
14179                 .flags = GENL_UNS_ADMIN_PERM,
14180                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14181                                   NL80211_FLAG_NEED_RTNL,
14182         },
14183         {
14184                 .cmd = NL80211_CMD_JOIN_MESH,
14185                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14186                 .doit = nl80211_join_mesh,
14187                 .flags = GENL_UNS_ADMIN_PERM,
14188                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14189                                   NL80211_FLAG_NEED_RTNL,
14190         },
14191         {
14192                 .cmd = NL80211_CMD_LEAVE_MESH,
14193                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14194                 .doit = nl80211_leave_mesh,
14195                 .flags = GENL_UNS_ADMIN_PERM,
14196                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14197                                   NL80211_FLAG_NEED_RTNL,
14198         },
14199         {
14200                 .cmd = NL80211_CMD_JOIN_OCB,
14201                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14202                 .doit = nl80211_join_ocb,
14203                 .flags = GENL_UNS_ADMIN_PERM,
14204                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14205                                   NL80211_FLAG_NEED_RTNL,
14206         },
14207         {
14208                 .cmd = NL80211_CMD_LEAVE_OCB,
14209                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14210                 .doit = nl80211_leave_ocb,
14211                 .flags = GENL_UNS_ADMIN_PERM,
14212                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14213                                   NL80211_FLAG_NEED_RTNL,
14214         },
14215 #ifdef CONFIG_PM
14216         {
14217                 .cmd = NL80211_CMD_GET_WOWLAN,
14218                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14219                 .doit = nl80211_get_wowlan,
14220                 /* can be retrieved by unprivileged users */
14221                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14222                                   NL80211_FLAG_NEED_RTNL,
14223         },
14224         {
14225                 .cmd = NL80211_CMD_SET_WOWLAN,
14226                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14227                 .doit = nl80211_set_wowlan,
14228                 .flags = GENL_UNS_ADMIN_PERM,
14229                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14230                                   NL80211_FLAG_NEED_RTNL,
14231         },
14232 #endif
14233         {
14234                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14235                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14236                 .doit = nl80211_set_rekey_data,
14237                 .flags = GENL_UNS_ADMIN_PERM,
14238                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14239                                   NL80211_FLAG_NEED_RTNL |
14240                                   NL80211_FLAG_CLEAR_SKB,
14241         },
14242         {
14243                 .cmd = NL80211_CMD_TDLS_MGMT,
14244                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14245                 .doit = nl80211_tdls_mgmt,
14246                 .flags = GENL_UNS_ADMIN_PERM,
14247                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14248                                   NL80211_FLAG_NEED_RTNL,
14249         },
14250         {
14251                 .cmd = NL80211_CMD_TDLS_OPER,
14252                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14253                 .doit = nl80211_tdls_oper,
14254                 .flags = GENL_UNS_ADMIN_PERM,
14255                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14256                                   NL80211_FLAG_NEED_RTNL,
14257         },
14258         {
14259                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14260                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14261                 .doit = nl80211_register_unexpected_frame,
14262                 .flags = GENL_UNS_ADMIN_PERM,
14263                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14264                                   NL80211_FLAG_NEED_RTNL,
14265         },
14266         {
14267                 .cmd = NL80211_CMD_PROBE_CLIENT,
14268                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14269                 .doit = nl80211_probe_client,
14270                 .flags = GENL_UNS_ADMIN_PERM,
14271                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14272                                   NL80211_FLAG_NEED_RTNL,
14273         },
14274         {
14275                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14276                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14277                 .doit = nl80211_register_beacons,
14278                 .flags = GENL_UNS_ADMIN_PERM,
14279                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14280                                   NL80211_FLAG_NEED_RTNL,
14281         },
14282         {
14283                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14284                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14285                 .doit = nl80211_set_noack_map,
14286                 .flags = GENL_UNS_ADMIN_PERM,
14287                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14288                                   NL80211_FLAG_NEED_RTNL,
14289         },
14290         {
14291                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14292                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14293                 .doit = nl80211_start_p2p_device,
14294                 .flags = GENL_UNS_ADMIN_PERM,
14295                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14296                                   NL80211_FLAG_NEED_RTNL,
14297         },
14298         {
14299                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14300                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14301                 .doit = nl80211_stop_p2p_device,
14302                 .flags = GENL_UNS_ADMIN_PERM,
14303                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14304                                   NL80211_FLAG_NEED_RTNL,
14305         },
14306         {
14307                 .cmd = NL80211_CMD_START_NAN,
14308                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14309                 .doit = nl80211_start_nan,
14310                 .flags = GENL_ADMIN_PERM,
14311                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14312                                   NL80211_FLAG_NEED_RTNL,
14313         },
14314         {
14315                 .cmd = NL80211_CMD_STOP_NAN,
14316                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14317                 .doit = nl80211_stop_nan,
14318                 .flags = GENL_ADMIN_PERM,
14319                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14320                                   NL80211_FLAG_NEED_RTNL,
14321         },
14322         {
14323                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14324                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14325                 .doit = nl80211_nan_add_func,
14326                 .flags = GENL_ADMIN_PERM,
14327                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14328                                   NL80211_FLAG_NEED_RTNL,
14329         },
14330         {
14331                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14332                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14333                 .doit = nl80211_nan_del_func,
14334                 .flags = GENL_ADMIN_PERM,
14335                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14336                                   NL80211_FLAG_NEED_RTNL,
14337         },
14338         {
14339                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14340                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14341                 .doit = nl80211_nan_change_config,
14342                 .flags = GENL_ADMIN_PERM,
14343                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14344                                   NL80211_FLAG_NEED_RTNL,
14345         },
14346         {
14347                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14348                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14349                 .doit = nl80211_set_mcast_rate,
14350                 .flags = GENL_UNS_ADMIN_PERM,
14351                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14352                                   NL80211_FLAG_NEED_RTNL,
14353         },
14354         {
14355                 .cmd = NL80211_CMD_SET_MAC_ACL,
14356                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14357                 .doit = nl80211_set_mac_acl,
14358                 .flags = GENL_UNS_ADMIN_PERM,
14359                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14360                                   NL80211_FLAG_NEED_RTNL,
14361         },
14362         {
14363                 .cmd = NL80211_CMD_RADAR_DETECT,
14364                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14365                 .doit = nl80211_start_radar_detection,
14366                 .flags = GENL_UNS_ADMIN_PERM,
14367                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14368                                   NL80211_FLAG_NEED_RTNL,
14369         },
14370         {
14371                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14372                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14373                 .doit = nl80211_get_protocol_features,
14374         },
14375         {
14376                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14377                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14378                 .doit = nl80211_update_ft_ies,
14379                 .flags = GENL_UNS_ADMIN_PERM,
14380                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14381                                   NL80211_FLAG_NEED_RTNL,
14382         },
14383         {
14384                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14385                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14386                 .doit = nl80211_crit_protocol_start,
14387                 .flags = GENL_UNS_ADMIN_PERM,
14388                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14389                                   NL80211_FLAG_NEED_RTNL,
14390         },
14391         {
14392                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14393                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14394                 .doit = nl80211_crit_protocol_stop,
14395                 .flags = GENL_UNS_ADMIN_PERM,
14396                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14397                                   NL80211_FLAG_NEED_RTNL,
14398         },
14399         {
14400                 .cmd = NL80211_CMD_GET_COALESCE,
14401                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14402                 .doit = nl80211_get_coalesce,
14403                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14404                                   NL80211_FLAG_NEED_RTNL,
14405         },
14406         {
14407                 .cmd = NL80211_CMD_SET_COALESCE,
14408                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14409                 .doit = nl80211_set_coalesce,
14410                 .flags = GENL_UNS_ADMIN_PERM,
14411                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14412                                   NL80211_FLAG_NEED_RTNL,
14413         },
14414         {
14415                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14416                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14417                 .doit = nl80211_channel_switch,
14418                 .flags = GENL_UNS_ADMIN_PERM,
14419                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14420                                   NL80211_FLAG_NEED_RTNL,
14421         },
14422         {
14423                 .cmd = NL80211_CMD_VENDOR,
14424                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14425                 .doit = nl80211_vendor_cmd,
14426                 .dumpit = nl80211_vendor_cmd_dump,
14427                 .flags = GENL_UNS_ADMIN_PERM,
14428                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14429                                   NL80211_FLAG_NEED_RTNL |
14430                                   NL80211_FLAG_CLEAR_SKB,
14431         },
14432         {
14433                 .cmd = NL80211_CMD_SET_QOS_MAP,
14434                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14435                 .doit = nl80211_set_qos_map,
14436                 .flags = GENL_UNS_ADMIN_PERM,
14437                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14438                                   NL80211_FLAG_NEED_RTNL,
14439         },
14440         {
14441                 .cmd = NL80211_CMD_ADD_TX_TS,
14442                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14443                 .doit = nl80211_add_tx_ts,
14444                 .flags = GENL_UNS_ADMIN_PERM,
14445                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14446                                   NL80211_FLAG_NEED_RTNL,
14447         },
14448         {
14449                 .cmd = NL80211_CMD_DEL_TX_TS,
14450                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14451                 .doit = nl80211_del_tx_ts,
14452                 .flags = GENL_UNS_ADMIN_PERM,
14453                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14454                                   NL80211_FLAG_NEED_RTNL,
14455         },
14456         {
14457                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14458                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14459                 .doit = nl80211_tdls_channel_switch,
14460                 .flags = GENL_UNS_ADMIN_PERM,
14461                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14462                                   NL80211_FLAG_NEED_RTNL,
14463         },
14464         {
14465                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14466                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14467                 .doit = nl80211_tdls_cancel_channel_switch,
14468                 .flags = GENL_UNS_ADMIN_PERM,
14469                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14470                                   NL80211_FLAG_NEED_RTNL,
14471         },
14472         {
14473                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14474                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14475                 .doit = nl80211_set_multicast_to_unicast,
14476                 .flags = GENL_UNS_ADMIN_PERM,
14477                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14478                                   NL80211_FLAG_NEED_RTNL,
14479         },
14480         {
14481                 .cmd = NL80211_CMD_SET_PMK,
14482                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14483                 .doit = nl80211_set_pmk,
14484                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14485                                   NL80211_FLAG_NEED_RTNL |
14486                                   NL80211_FLAG_CLEAR_SKB,
14487         },
14488         {
14489                 .cmd = NL80211_CMD_DEL_PMK,
14490                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14491                 .doit = nl80211_del_pmk,
14492                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14493                                   NL80211_FLAG_NEED_RTNL,
14494         },
14495         {
14496                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14497                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14498                 .doit = nl80211_external_auth,
14499                 .flags = GENL_ADMIN_PERM,
14500                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14501                                   NL80211_FLAG_NEED_RTNL,
14502         },
14503         {
14504                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14505                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14506                 .doit = nl80211_tx_control_port,
14507                 .flags = GENL_UNS_ADMIN_PERM,
14508                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14509                                   NL80211_FLAG_NEED_RTNL,
14510         },
14511         {
14512                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14513                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14514                 .doit = nl80211_get_ftm_responder_stats,
14515                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14516                                   NL80211_FLAG_NEED_RTNL,
14517         },
14518         {
14519                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14520                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14521                 .doit = nl80211_pmsr_start,
14522                 .flags = GENL_UNS_ADMIN_PERM,
14523                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14524                                   NL80211_FLAG_NEED_RTNL,
14525         },
14526         {
14527                 .cmd = NL80211_CMD_NOTIFY_RADAR,
14528                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14529                 .doit = nl80211_notify_radar_detection,
14530                 .flags = GENL_UNS_ADMIN_PERM,
14531                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14532                                   NL80211_FLAG_NEED_RTNL,
14533         },
14534         {
14535                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
14536                 .doit = nl80211_update_owe_info,
14537                 .flags = GENL_ADMIN_PERM,
14538                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14539                                   NL80211_FLAG_NEED_RTNL,
14540         },
14541         {
14542                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
14543                 .doit = nl80211_probe_mesh_link,
14544                 .flags = GENL_UNS_ADMIN_PERM,
14545                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14546                                   NL80211_FLAG_NEED_RTNL,
14547         },
14548 };
14549
14550 static struct genl_family nl80211_fam __ro_after_init = {
14551         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
14552         .hdrsize = 0,                   /* no private header */
14553         .version = 1,                   /* no particular meaning now */
14554         .maxattr = NL80211_ATTR_MAX,
14555         .policy = nl80211_policy,
14556         .netnsok = true,
14557         .pre_doit = nl80211_pre_doit,
14558         .post_doit = nl80211_post_doit,
14559         .module = THIS_MODULE,
14560         .ops = nl80211_ops,
14561         .n_ops = ARRAY_SIZE(nl80211_ops),
14562         .mcgrps = nl80211_mcgrps,
14563         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14564 };
14565
14566 /* notification functions */
14567
14568 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14569                           enum nl80211_commands cmd)
14570 {
14571         struct sk_buff *msg;
14572         struct nl80211_dump_wiphy_state state = {};
14573
14574         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14575                 cmd != NL80211_CMD_DEL_WIPHY);
14576
14577         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14578         if (!msg)
14579                 return;
14580
14581         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14582                 nlmsg_free(msg);
14583                 return;
14584         }
14585
14586         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14587                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14588 }
14589
14590 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14591                                 struct wireless_dev *wdev,
14592                                 enum nl80211_commands cmd)
14593 {
14594         struct sk_buff *msg;
14595
14596         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14597         if (!msg)
14598                 return;
14599
14600         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14601                 nlmsg_free(msg);
14602                 return;
14603         }
14604
14605         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14606                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14607 }
14608
14609 static int nl80211_add_scan_req(struct sk_buff *msg,
14610                                 struct cfg80211_registered_device *rdev)
14611 {
14612         struct cfg80211_scan_request *req = rdev->scan_req;
14613         struct nlattr *nest;
14614         int i;
14615
14616         if (WARN_ON(!req))
14617                 return 0;
14618
14619         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
14620         if (!nest)
14621                 goto nla_put_failure;
14622         for (i = 0; i < req->n_ssids; i++) {
14623                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14624                         goto nla_put_failure;
14625         }
14626         nla_nest_end(msg, nest);
14627
14628         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14629         if (!nest)
14630                 goto nla_put_failure;
14631         for (i = 0; i < req->n_channels; i++) {
14632                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14633                         goto nla_put_failure;
14634         }
14635         nla_nest_end(msg, nest);
14636
14637         if (req->ie &&
14638             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14639                 goto nla_put_failure;
14640
14641         if (req->flags &&
14642             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14643                 goto nla_put_failure;
14644
14645         if (req->info.scan_start_tsf &&
14646             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14647                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14648              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14649                      req->info.tsf_bssid)))
14650                 goto nla_put_failure;
14651
14652         return 0;
14653  nla_put_failure:
14654         return -ENOBUFS;
14655 }
14656
14657 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14658                                  struct cfg80211_registered_device *rdev,
14659                                  struct wireless_dev *wdev,
14660                                  u32 portid, u32 seq, int flags,
14661                                  u32 cmd)
14662 {
14663         void *hdr;
14664
14665         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14666         if (!hdr)
14667                 return -1;
14668
14669         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14670             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14671                                          wdev->netdev->ifindex)) ||
14672             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14673                               NL80211_ATTR_PAD))
14674                 goto nla_put_failure;
14675
14676         /* ignore errors and send incomplete event anyway */
14677         nl80211_add_scan_req(msg, rdev);
14678
14679         genlmsg_end(msg, hdr);
14680         return 0;
14681
14682  nla_put_failure:
14683         genlmsg_cancel(msg, hdr);
14684         return -EMSGSIZE;
14685 }
14686
14687 static int
14688 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14689                             struct cfg80211_sched_scan_request *req, u32 cmd)
14690 {
14691         void *hdr;
14692
14693         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14694         if (!hdr)
14695                 return -1;
14696
14697         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14698                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14699             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14700             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14701                               NL80211_ATTR_PAD))
14702                 goto nla_put_failure;
14703
14704         genlmsg_end(msg, hdr);
14705         return 0;
14706
14707  nla_put_failure:
14708         genlmsg_cancel(msg, hdr);
14709         return -EMSGSIZE;
14710 }
14711
14712 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14713                              struct wireless_dev *wdev)
14714 {
14715         struct sk_buff *msg;
14716
14717         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14718         if (!msg)
14719                 return;
14720
14721         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14722                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
14723                 nlmsg_free(msg);
14724                 return;
14725         }
14726
14727         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14728                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14729 }
14730
14731 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14732                                        struct wireless_dev *wdev, bool aborted)
14733 {
14734         struct sk_buff *msg;
14735
14736         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14737         if (!msg)
14738                 return NULL;
14739
14740         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14741                                   aborted ? NL80211_CMD_SCAN_ABORTED :
14742                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14743                 nlmsg_free(msg);
14744                 return NULL;
14745         }
14746
14747         return msg;
14748 }
14749
14750 /* send message created by nl80211_build_scan_msg() */
14751 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14752                            struct sk_buff *msg)
14753 {
14754         if (!msg)
14755                 return;
14756
14757         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14758                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14759 }
14760
14761 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14762 {
14763         struct sk_buff *msg;
14764
14765         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14766         if (!msg)
14767                 return;
14768
14769         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14770                 nlmsg_free(msg);
14771                 return;
14772         }
14773
14774         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14775                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14776 }
14777
14778 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14779                                           struct regulatory_request *request)
14780 {
14781         /* Userspace can always count this one always being set */
14782         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14783                 goto nla_put_failure;
14784
14785         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14786                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14787                                NL80211_REGDOM_TYPE_WORLD))
14788                         goto nla_put_failure;
14789         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14790                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14791                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14792                         goto nla_put_failure;
14793         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14794                    request->intersect) {
14795                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14796                                NL80211_REGDOM_TYPE_INTERSECTION))
14797                         goto nla_put_failure;
14798         } else {
14799                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14800                                NL80211_REGDOM_TYPE_COUNTRY) ||
14801                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
14802                                    request->alpha2))
14803                         goto nla_put_failure;
14804         }
14805
14806         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
14807                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
14808
14809                 if (wiphy &&
14810                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
14811                         goto nla_put_failure;
14812
14813                 if (wiphy &&
14814                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
14815                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
14816                         goto nla_put_failure;
14817         }
14818
14819         return true;
14820
14821 nla_put_failure:
14822         return false;
14823 }
14824
14825 /*
14826  * This can happen on global regulatory changes or device specific settings
14827  * based on custom regulatory domains.
14828  */
14829 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
14830                                      struct regulatory_request *request)
14831 {
14832         struct sk_buff *msg;
14833         void *hdr;
14834
14835         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14836         if (!msg)
14837                 return;
14838
14839         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
14840         if (!hdr) {
14841                 nlmsg_free(msg);
14842                 return;
14843         }
14844
14845         if (nl80211_reg_change_event_fill(msg, request) == false)
14846                 goto nla_put_failure;
14847
14848         genlmsg_end(msg, hdr);
14849
14850         rcu_read_lock();
14851         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14852                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14853         rcu_read_unlock();
14854
14855         return;
14856
14857 nla_put_failure:
14858         nlmsg_free(msg);
14859 }
14860
14861 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
14862                                     struct net_device *netdev,
14863                                     const u8 *buf, size_t len,
14864                                     enum nl80211_commands cmd, gfp_t gfp,
14865                                     int uapsd_queues, const u8 *req_ies,
14866                                     size_t req_ies_len)
14867 {
14868         struct sk_buff *msg;
14869         void *hdr;
14870
14871         msg = nlmsg_new(100 + len + req_ies_len, gfp);
14872         if (!msg)
14873                 return;
14874
14875         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14876         if (!hdr) {
14877                 nlmsg_free(msg);
14878                 return;
14879         }
14880
14881         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14882             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14883             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14884             (req_ies &&
14885              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
14886                 goto nla_put_failure;
14887
14888         if (uapsd_queues >= 0) {
14889                 struct nlattr *nla_wmm =
14890                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
14891                 if (!nla_wmm)
14892                         goto nla_put_failure;
14893
14894                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
14895                                uapsd_queues))
14896                         goto nla_put_failure;
14897
14898                 nla_nest_end(msg, nla_wmm);
14899         }
14900
14901         genlmsg_end(msg, hdr);
14902
14903         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14904                                 NL80211_MCGRP_MLME, gfp);
14905         return;
14906
14907  nla_put_failure:
14908         nlmsg_free(msg);
14909 }
14910
14911 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
14912                           struct net_device *netdev, const u8 *buf,
14913                           size_t len, gfp_t gfp)
14914 {
14915         nl80211_send_mlme_event(rdev, netdev, buf, len,
14916                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
14917 }
14918
14919 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
14920                            struct net_device *netdev, const u8 *buf,
14921                            size_t len, gfp_t gfp, int uapsd_queues,
14922                            const u8 *req_ies, size_t req_ies_len)
14923 {
14924         nl80211_send_mlme_event(rdev, netdev, buf, len,
14925                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
14926                                 req_ies, req_ies_len);
14927 }
14928
14929 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
14930                          struct net_device *netdev, const u8 *buf,
14931                          size_t len, gfp_t gfp)
14932 {
14933         nl80211_send_mlme_event(rdev, netdev, buf, len,
14934                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
14935 }
14936
14937 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
14938                            struct net_device *netdev, const u8 *buf,
14939                            size_t len, gfp_t gfp)
14940 {
14941         nl80211_send_mlme_event(rdev, netdev, buf, len,
14942                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
14943 }
14944
14945 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
14946                                   size_t len)
14947 {
14948         struct wireless_dev *wdev = dev->ieee80211_ptr;
14949         struct wiphy *wiphy = wdev->wiphy;
14950         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14951         const struct ieee80211_mgmt *mgmt = (void *)buf;
14952         u32 cmd;
14953
14954         if (WARN_ON(len < 2))
14955                 return;
14956
14957         if (ieee80211_is_deauth(mgmt->frame_control))
14958                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
14959         else
14960                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
14961
14962         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
14963         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
14964                                 NULL, 0);
14965 }
14966 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
14967
14968 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
14969                                       struct net_device *netdev, int cmd,
14970                                       const u8 *addr, gfp_t gfp)
14971 {
14972         struct sk_buff *msg;
14973         void *hdr;
14974
14975         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14976         if (!msg)
14977                 return;
14978
14979         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14980         if (!hdr) {
14981                 nlmsg_free(msg);
14982                 return;
14983         }
14984
14985         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14986             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14987             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
14988             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14989                 goto nla_put_failure;
14990
14991         genlmsg_end(msg, hdr);
14992
14993         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14994                                 NL80211_MCGRP_MLME, gfp);
14995         return;
14996
14997  nla_put_failure:
14998         nlmsg_free(msg);
14999 }
15000
15001 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15002                                struct net_device *netdev, const u8 *addr,
15003                                gfp_t gfp)
15004 {
15005         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15006                                   addr, gfp);
15007 }
15008
15009 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15010                                 struct net_device *netdev, const u8 *addr,
15011                                 gfp_t gfp)
15012 {
15013         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15014                                   addr, gfp);
15015 }
15016
15017 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15018                                  struct net_device *netdev,
15019                                  struct cfg80211_connect_resp_params *cr,
15020                                  gfp_t gfp)
15021 {
15022         struct sk_buff *msg;
15023         void *hdr;
15024
15025         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15026                         cr->fils.kek_len + cr->fils.pmk_len +
15027                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15028         if (!msg)
15029                 return;
15030
15031         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15032         if (!hdr) {
15033                 nlmsg_free(msg);
15034                 return;
15035         }
15036
15037         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15038             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15039             (cr->bssid &&
15040              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15041             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15042                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15043                         cr->status) ||
15044             (cr->status < 0 &&
15045              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15046               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15047                           cr->timeout_reason))) ||
15048             (cr->req_ie &&
15049              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15050             (cr->resp_ie &&
15051              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15052                      cr->resp_ie)) ||
15053             (cr->fils.update_erp_next_seq_num &&
15054              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15055                          cr->fils.erp_next_seq_num)) ||
15056             (cr->status == WLAN_STATUS_SUCCESS &&
15057              ((cr->fils.kek &&
15058                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15059                        cr->fils.kek)) ||
15060               (cr->fils.pmk &&
15061                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15062               (cr->fils.pmkid &&
15063                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15064                 goto nla_put_failure;
15065
15066         genlmsg_end(msg, hdr);
15067
15068         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15069                                 NL80211_MCGRP_MLME, gfp);
15070         return;
15071
15072  nla_put_failure:
15073         nlmsg_free(msg);
15074 }
15075
15076 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15077                          struct net_device *netdev,
15078                          struct cfg80211_roam_info *info, gfp_t gfp)
15079 {
15080         struct sk_buff *msg;
15081         void *hdr;
15082         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15083
15084         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15085                         info->fils.kek_len + info->fils.pmk_len +
15086                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15087         if (!msg)
15088                 return;
15089
15090         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15091         if (!hdr) {
15092                 nlmsg_free(msg);
15093                 return;
15094         }
15095
15096         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15097             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15098             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15099             (info->req_ie &&
15100              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15101                      info->req_ie)) ||
15102             (info->resp_ie &&
15103              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15104                      info->resp_ie)) ||
15105             (info->fils.update_erp_next_seq_num &&
15106              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15107                          info->fils.erp_next_seq_num)) ||
15108             (info->fils.kek &&
15109              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15110                      info->fils.kek)) ||
15111             (info->fils.pmk &&
15112              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15113             (info->fils.pmkid &&
15114              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15115                 goto nla_put_failure;
15116
15117         genlmsg_end(msg, hdr);
15118
15119         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15120                                 NL80211_MCGRP_MLME, gfp);
15121         return;
15122
15123  nla_put_failure:
15124         nlmsg_free(msg);
15125 }
15126
15127 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15128                                   struct net_device *netdev, const u8 *bssid)
15129 {
15130         struct sk_buff *msg;
15131         void *hdr;
15132
15133         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15134         if (!msg)
15135                 return;
15136
15137         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15138         if (!hdr) {
15139                 nlmsg_free(msg);
15140                 return;
15141         }
15142
15143         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15144             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15145             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15146                 goto nla_put_failure;
15147
15148         genlmsg_end(msg, hdr);
15149
15150         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15151                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15152         return;
15153
15154  nla_put_failure:
15155         nlmsg_free(msg);
15156 }
15157
15158 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15159                                struct net_device *netdev, u16 reason,
15160                                const u8 *ie, size_t ie_len, bool from_ap)
15161 {
15162         struct sk_buff *msg;
15163         void *hdr;
15164
15165         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15166         if (!msg)
15167                 return;
15168
15169         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15170         if (!hdr) {
15171                 nlmsg_free(msg);
15172                 return;
15173         }
15174
15175         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15176             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15177             (reason &&
15178              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15179             (from_ap &&
15180              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15181             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15182                 goto nla_put_failure;
15183
15184         genlmsg_end(msg, hdr);
15185
15186         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15187                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15188         return;
15189
15190  nla_put_failure:
15191         nlmsg_free(msg);
15192 }
15193
15194 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15195                              struct net_device *netdev, const u8 *bssid,
15196                              gfp_t gfp)
15197 {
15198         struct sk_buff *msg;
15199         void *hdr;
15200
15201         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15202         if (!msg)
15203                 return;
15204
15205         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15206         if (!hdr) {
15207                 nlmsg_free(msg);
15208                 return;
15209         }
15210
15211         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15212             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15213             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15214                 goto nla_put_failure;
15215
15216         genlmsg_end(msg, hdr);
15217
15218         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15219                                 NL80211_MCGRP_MLME, gfp);
15220         return;
15221
15222  nla_put_failure:
15223         nlmsg_free(msg);
15224 }
15225
15226 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15227                                         const u8 *ie, u8 ie_len,
15228                                         int sig_dbm, gfp_t gfp)
15229 {
15230         struct wireless_dev *wdev = dev->ieee80211_ptr;
15231         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15232         struct sk_buff *msg;
15233         void *hdr;
15234
15235         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15236                 return;
15237
15238         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15239
15240         msg = nlmsg_new(100 + ie_len, gfp);
15241         if (!msg)
15242                 return;
15243
15244         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15245         if (!hdr) {
15246                 nlmsg_free(msg);
15247                 return;
15248         }
15249
15250         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15251             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15252             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15253             (ie_len && ie &&
15254              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15255             (sig_dbm &&
15256              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15257                 goto nla_put_failure;
15258
15259         genlmsg_end(msg, hdr);
15260
15261         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15262                                 NL80211_MCGRP_MLME, gfp);
15263         return;
15264
15265  nla_put_failure:
15266         nlmsg_free(msg);
15267 }
15268 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15269
15270 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15271                                  struct net_device *netdev, const u8 *addr,
15272                                  enum nl80211_key_type key_type, int key_id,
15273                                  const u8 *tsc, gfp_t gfp)
15274 {
15275         struct sk_buff *msg;
15276         void *hdr;
15277
15278         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15279         if (!msg)
15280                 return;
15281
15282         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15283         if (!hdr) {
15284                 nlmsg_free(msg);
15285                 return;
15286         }
15287
15288         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15289             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15290             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15291             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15292             (key_id != -1 &&
15293              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15294             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15295                 goto nla_put_failure;
15296
15297         genlmsg_end(msg, hdr);
15298
15299         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15300                                 NL80211_MCGRP_MLME, gfp);
15301         return;
15302
15303  nla_put_failure:
15304         nlmsg_free(msg);
15305 }
15306
15307 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15308                                     struct ieee80211_channel *channel_before,
15309                                     struct ieee80211_channel *channel_after)
15310 {
15311         struct sk_buff *msg;
15312         void *hdr;
15313         struct nlattr *nl_freq;
15314
15315         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15316         if (!msg)
15317                 return;
15318
15319         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15320         if (!hdr) {
15321                 nlmsg_free(msg);
15322                 return;
15323         }
15324
15325         /*
15326          * Since we are applying the beacon hint to a wiphy we know its
15327          * wiphy_idx is valid
15328          */
15329         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15330                 goto nla_put_failure;
15331
15332         /* Before */
15333         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15334         if (!nl_freq)
15335                 goto nla_put_failure;
15336
15337         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15338                 goto nla_put_failure;
15339         nla_nest_end(msg, nl_freq);
15340
15341         /* After */
15342         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15343         if (!nl_freq)
15344                 goto nla_put_failure;
15345
15346         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15347                 goto nla_put_failure;
15348         nla_nest_end(msg, nl_freq);
15349
15350         genlmsg_end(msg, hdr);
15351
15352         rcu_read_lock();
15353         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15354                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15355         rcu_read_unlock();
15356
15357         return;
15358
15359 nla_put_failure:
15360         nlmsg_free(msg);
15361 }
15362
15363 static void nl80211_send_remain_on_chan_event(
15364         int cmd, struct cfg80211_registered_device *rdev,
15365         struct wireless_dev *wdev, u64 cookie,
15366         struct ieee80211_channel *chan,
15367         unsigned int duration, gfp_t gfp)
15368 {
15369         struct sk_buff *msg;
15370         void *hdr;
15371
15372         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15373         if (!msg)
15374                 return;
15375
15376         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15377         if (!hdr) {
15378                 nlmsg_free(msg);
15379                 return;
15380         }
15381
15382         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15383             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15384                                          wdev->netdev->ifindex)) ||
15385             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15386                               NL80211_ATTR_PAD) ||
15387             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15388             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15389                         NL80211_CHAN_NO_HT) ||
15390             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15391                               NL80211_ATTR_PAD))
15392                 goto nla_put_failure;
15393
15394         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15395             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15396                 goto nla_put_failure;
15397
15398         genlmsg_end(msg, hdr);
15399
15400         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15401                                 NL80211_MCGRP_MLME, gfp);
15402         return;
15403
15404  nla_put_failure:
15405         nlmsg_free(msg);
15406 }
15407
15408 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15409                                struct ieee80211_channel *chan,
15410                                unsigned int duration, gfp_t gfp)
15411 {
15412         struct wiphy *wiphy = wdev->wiphy;
15413         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15414
15415         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15416         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15417                                           rdev, wdev, cookie, chan,
15418                                           duration, gfp);
15419 }
15420 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15421
15422 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15423                                         struct ieee80211_channel *chan,
15424                                         gfp_t gfp)
15425 {
15426         struct wiphy *wiphy = wdev->wiphy;
15427         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15428
15429         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15430         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15431                                           rdev, wdev, cookie, chan, 0, gfp);
15432 }
15433 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15434
15435 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15436                                         struct ieee80211_channel *chan,
15437                                         gfp_t gfp)
15438 {
15439         struct wiphy *wiphy = wdev->wiphy;
15440         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15441
15442         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15443         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15444                                           rdev, wdev, cookie, chan, 0, gfp);
15445 }
15446 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15447
15448 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15449                       struct station_info *sinfo, gfp_t gfp)
15450 {
15451         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15452         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15453         struct sk_buff *msg;
15454
15455         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15456
15457         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15458         if (!msg)
15459                 return;
15460
15461         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15462                                  rdev, dev, mac_addr, sinfo) < 0) {
15463                 nlmsg_free(msg);
15464                 return;
15465         }
15466
15467         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15468                                 NL80211_MCGRP_MLME, gfp);
15469 }
15470 EXPORT_SYMBOL(cfg80211_new_sta);
15471
15472 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15473                             struct station_info *sinfo, gfp_t gfp)
15474 {
15475         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15476         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15477         struct sk_buff *msg;
15478         struct station_info empty_sinfo = {};
15479
15480         if (!sinfo)
15481                 sinfo = &empty_sinfo;
15482
15483         trace_cfg80211_del_sta(dev, mac_addr);
15484
15485         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15486         if (!msg) {
15487                 cfg80211_sinfo_release_content(sinfo);
15488                 return;
15489         }
15490
15491         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15492                                  rdev, dev, mac_addr, sinfo) < 0) {
15493                 nlmsg_free(msg);
15494                 return;
15495         }
15496
15497         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15498                                 NL80211_MCGRP_MLME, gfp);
15499 }
15500 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15501
15502 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15503                           enum nl80211_connect_failed_reason reason,
15504                           gfp_t gfp)
15505 {
15506         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15507         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15508         struct sk_buff *msg;
15509         void *hdr;
15510
15511         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15512         if (!msg)
15513                 return;
15514
15515         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15516         if (!hdr) {
15517                 nlmsg_free(msg);
15518                 return;
15519         }
15520
15521         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15522             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15523             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15524                 goto nla_put_failure;
15525
15526         genlmsg_end(msg, hdr);
15527
15528         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15529                                 NL80211_MCGRP_MLME, gfp);
15530         return;
15531
15532  nla_put_failure:
15533         nlmsg_free(msg);
15534 }
15535 EXPORT_SYMBOL(cfg80211_conn_failed);
15536
15537 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15538                                        const u8 *addr, gfp_t gfp)
15539 {
15540         struct wireless_dev *wdev = dev->ieee80211_ptr;
15541         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15542         struct sk_buff *msg;
15543         void *hdr;
15544         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15545
15546         if (!nlportid)
15547                 return false;
15548
15549         msg = nlmsg_new(100, gfp);
15550         if (!msg)
15551                 return true;
15552
15553         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15554         if (!hdr) {
15555                 nlmsg_free(msg);
15556                 return true;
15557         }
15558
15559         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15560             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15561             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15562                 goto nla_put_failure;
15563
15564         genlmsg_end(msg, hdr);
15565         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15566         return true;
15567
15568  nla_put_failure:
15569         nlmsg_free(msg);
15570         return true;
15571 }
15572
15573 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15574                                 const u8 *addr, gfp_t gfp)
15575 {
15576         struct wireless_dev *wdev = dev->ieee80211_ptr;
15577         bool ret;
15578
15579         trace_cfg80211_rx_spurious_frame(dev, addr);
15580
15581         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15582                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15583                 trace_cfg80211_return_bool(false);
15584                 return false;
15585         }
15586         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15587                                          addr, gfp);
15588         trace_cfg80211_return_bool(ret);
15589         return ret;
15590 }
15591 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15592
15593 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15594                                         const u8 *addr, gfp_t gfp)
15595 {
15596         struct wireless_dev *wdev = dev->ieee80211_ptr;
15597         bool ret;
15598
15599         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15600
15601         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15602                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15603                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15604                 trace_cfg80211_return_bool(false);
15605                 return false;
15606         }
15607         ret = __nl80211_unexpected_frame(dev,
15608                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15609                                          addr, gfp);
15610         trace_cfg80211_return_bool(ret);
15611         return ret;
15612 }
15613 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15614
15615 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15616                       struct wireless_dev *wdev, u32 nlportid,
15617                       int freq, int sig_dbm,
15618                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15619 {
15620         struct net_device *netdev = wdev->netdev;
15621         struct sk_buff *msg;
15622         void *hdr;
15623
15624         msg = nlmsg_new(100 + len, gfp);
15625         if (!msg)
15626                 return -ENOMEM;
15627
15628         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15629         if (!hdr) {
15630                 nlmsg_free(msg);
15631                 return -ENOMEM;
15632         }
15633
15634         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15635             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15636                                         netdev->ifindex)) ||
15637             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15638                               NL80211_ATTR_PAD) ||
15639             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15640             (sig_dbm &&
15641              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15642             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15643             (flags &&
15644              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15645                 goto nla_put_failure;
15646
15647         genlmsg_end(msg, hdr);
15648
15649         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15650
15651  nla_put_failure:
15652         nlmsg_free(msg);
15653         return -ENOBUFS;
15654 }
15655
15656 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15657                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
15658 {
15659         struct wiphy *wiphy = wdev->wiphy;
15660         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15661         struct net_device *netdev = wdev->netdev;
15662         struct sk_buff *msg;
15663         void *hdr;
15664
15665         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15666
15667         msg = nlmsg_new(100 + len, gfp);
15668         if (!msg)
15669                 return;
15670
15671         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15672         if (!hdr) {
15673                 nlmsg_free(msg);
15674                 return;
15675         }
15676
15677         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15678             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15679                                    netdev->ifindex)) ||
15680             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15681                               NL80211_ATTR_PAD) ||
15682             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15683             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15684                               NL80211_ATTR_PAD) ||
15685             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15686                 goto nla_put_failure;
15687
15688         genlmsg_end(msg, hdr);
15689
15690         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15691                                 NL80211_MCGRP_MLME, gfp);
15692         return;
15693
15694  nla_put_failure:
15695         nlmsg_free(msg);
15696 }
15697 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15698
15699 static int __nl80211_rx_control_port(struct net_device *dev,
15700                                      struct sk_buff *skb,
15701                                      bool unencrypted, gfp_t gfp)
15702 {
15703         struct wireless_dev *wdev = dev->ieee80211_ptr;
15704         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15705         struct ethhdr *ehdr = eth_hdr(skb);
15706         const u8 *addr = ehdr->h_source;
15707         u16 proto = be16_to_cpu(skb->protocol);
15708         struct sk_buff *msg;
15709         void *hdr;
15710         struct nlattr *frame;
15711
15712         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15713
15714         if (!nlportid)
15715                 return -ENOENT;
15716
15717         msg = nlmsg_new(100 + skb->len, gfp);
15718         if (!msg)
15719                 return -ENOMEM;
15720
15721         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15722         if (!hdr) {
15723                 nlmsg_free(msg);
15724                 return -ENOBUFS;
15725         }
15726
15727         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15728             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15729             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15730                               NL80211_ATTR_PAD) ||
15731             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15732             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15733             (unencrypted && nla_put_flag(msg,
15734                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15735                 goto nla_put_failure;
15736
15737         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15738         if (!frame)
15739                 goto nla_put_failure;
15740
15741         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15742         genlmsg_end(msg, hdr);
15743
15744         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15745
15746  nla_put_failure:
15747         nlmsg_free(msg);
15748         return -ENOBUFS;
15749 }
15750
15751 bool cfg80211_rx_control_port(struct net_device *dev,
15752                               struct sk_buff *skb, bool unencrypted)
15753 {
15754         int ret;
15755
15756         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15757         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15758         trace_cfg80211_return_bool(ret == 0);
15759         return ret == 0;
15760 }
15761 EXPORT_SYMBOL(cfg80211_rx_control_port);
15762
15763 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15764                                             const char *mac, gfp_t gfp)
15765 {
15766         struct wireless_dev *wdev = dev->ieee80211_ptr;
15767         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15768         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15769         void **cb;
15770
15771         if (!msg)
15772                 return NULL;
15773
15774         cb = (void **)msg->cb;
15775
15776         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15777         if (!cb[0]) {
15778                 nlmsg_free(msg);
15779                 return NULL;
15780         }
15781
15782         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15783             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15784                 goto nla_put_failure;
15785
15786         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15787                 goto nla_put_failure;
15788
15789         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
15790         if (!cb[1])
15791                 goto nla_put_failure;
15792
15793         cb[2] = rdev;
15794
15795         return msg;
15796  nla_put_failure:
15797         nlmsg_free(msg);
15798         return NULL;
15799 }
15800
15801 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
15802 {
15803         void **cb = (void **)msg->cb;
15804         struct cfg80211_registered_device *rdev = cb[2];
15805
15806         nla_nest_end(msg, cb[1]);
15807         genlmsg_end(msg, cb[0]);
15808
15809         memset(msg->cb, 0, sizeof(msg->cb));
15810
15811         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15812                                 NL80211_MCGRP_MLME, gfp);
15813 }
15814
15815 void cfg80211_cqm_rssi_notify(struct net_device *dev,
15816                               enum nl80211_cqm_rssi_threshold_event rssi_event,
15817                               s32 rssi_level, gfp_t gfp)
15818 {
15819         struct sk_buff *msg;
15820         struct wireless_dev *wdev = dev->ieee80211_ptr;
15821         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15822
15823         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
15824
15825         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
15826                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
15827                 return;
15828
15829         if (wdev->cqm_config) {
15830                 wdev->cqm_config->last_rssi_event_value = rssi_level;
15831
15832                 cfg80211_cqm_rssi_update(rdev, dev);
15833
15834                 if (rssi_level == 0)
15835                         rssi_level = wdev->cqm_config->last_rssi_event_value;
15836         }
15837
15838         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15839         if (!msg)
15840                 return;
15841
15842         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
15843                         rssi_event))
15844                 goto nla_put_failure;
15845
15846         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
15847                                       rssi_level))
15848                 goto nla_put_failure;
15849
15850         cfg80211_send_cqm(msg, gfp);
15851
15852         return;
15853
15854  nla_put_failure:
15855         nlmsg_free(msg);
15856 }
15857 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
15858
15859 void cfg80211_cqm_txe_notify(struct net_device *dev,
15860                              const u8 *peer, u32 num_packets,
15861                              u32 rate, u32 intvl, gfp_t gfp)
15862 {
15863         struct sk_buff *msg;
15864
15865         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15866         if (!msg)
15867                 return;
15868
15869         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
15870                 goto nla_put_failure;
15871
15872         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
15873                 goto nla_put_failure;
15874
15875         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
15876                 goto nla_put_failure;
15877
15878         cfg80211_send_cqm(msg, gfp);
15879         return;
15880
15881  nla_put_failure:
15882         nlmsg_free(msg);
15883 }
15884 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
15885
15886 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
15887                                  const u8 *peer, u32 num_packets, gfp_t gfp)
15888 {
15889         struct sk_buff *msg;
15890
15891         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
15892
15893         msg = cfg80211_prepare_cqm(dev, peer, gfp);
15894         if (!msg)
15895                 return;
15896
15897         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
15898                 goto nla_put_failure;
15899
15900         cfg80211_send_cqm(msg, gfp);
15901         return;
15902
15903  nla_put_failure:
15904         nlmsg_free(msg);
15905 }
15906 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
15907
15908 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
15909 {
15910         struct sk_buff *msg;
15911
15912         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
15913         if (!msg)
15914                 return;
15915
15916         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
15917                 goto nla_put_failure;
15918
15919         cfg80211_send_cqm(msg, gfp);
15920         return;
15921
15922  nla_put_failure:
15923         nlmsg_free(msg);
15924 }
15925 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
15926
15927 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
15928                                      struct net_device *netdev, const u8 *bssid,
15929                                      const u8 *replay_ctr, gfp_t gfp)
15930 {
15931         struct sk_buff *msg;
15932         struct nlattr *rekey_attr;
15933         void *hdr;
15934
15935         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15936         if (!msg)
15937                 return;
15938
15939         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
15940         if (!hdr) {
15941                 nlmsg_free(msg);
15942                 return;
15943         }
15944
15945         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15946             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15947             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15948                 goto nla_put_failure;
15949
15950         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
15951         if (!rekey_attr)
15952                 goto nla_put_failure;
15953
15954         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
15955                     NL80211_REPLAY_CTR_LEN, replay_ctr))
15956                 goto nla_put_failure;
15957
15958         nla_nest_end(msg, rekey_attr);
15959
15960         genlmsg_end(msg, hdr);
15961
15962         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15963                                 NL80211_MCGRP_MLME, gfp);
15964         return;
15965
15966  nla_put_failure:
15967         nlmsg_free(msg);
15968 }
15969
15970 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
15971                                const u8 *replay_ctr, gfp_t gfp)
15972 {
15973         struct wireless_dev *wdev = dev->ieee80211_ptr;
15974         struct wiphy *wiphy = wdev->wiphy;
15975         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15976
15977         trace_cfg80211_gtk_rekey_notify(dev, bssid);
15978         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
15979 }
15980 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
15981
15982 static void
15983 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
15984                                struct net_device *netdev, int index,
15985                                const u8 *bssid, bool preauth, gfp_t gfp)
15986 {
15987         struct sk_buff *msg;
15988         struct nlattr *attr;
15989         void *hdr;
15990
15991         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15992         if (!msg)
15993                 return;
15994
15995         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
15996         if (!hdr) {
15997                 nlmsg_free(msg);
15998                 return;
15999         }
16000
16001         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16002             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16003                 goto nla_put_failure;
16004
16005         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16006         if (!attr)
16007                 goto nla_put_failure;
16008
16009         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16010             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16011             (preauth &&
16012              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16013                 goto nla_put_failure;
16014
16015         nla_nest_end(msg, attr);
16016
16017         genlmsg_end(msg, hdr);
16018
16019         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16020                                 NL80211_MCGRP_MLME, gfp);
16021         return;
16022
16023  nla_put_failure:
16024         nlmsg_free(msg);
16025 }
16026
16027 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16028                                      const u8 *bssid, bool preauth, gfp_t gfp)
16029 {
16030         struct wireless_dev *wdev = dev->ieee80211_ptr;
16031         struct wiphy *wiphy = wdev->wiphy;
16032         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16033
16034         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16035         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16036 }
16037 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16038
16039 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16040                                      struct net_device *netdev,
16041                                      struct cfg80211_chan_def *chandef,
16042                                      gfp_t gfp,
16043                                      enum nl80211_commands notif,
16044                                      u8 count)
16045 {
16046         struct sk_buff *msg;
16047         void *hdr;
16048
16049         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16050         if (!msg)
16051                 return;
16052
16053         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16054         if (!hdr) {
16055                 nlmsg_free(msg);
16056                 return;
16057         }
16058
16059         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16060                 goto nla_put_failure;
16061
16062         if (nl80211_send_chandef(msg, chandef))
16063                 goto nla_put_failure;
16064
16065         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16066             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16067                         goto nla_put_failure;
16068
16069         genlmsg_end(msg, hdr);
16070
16071         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16072                                 NL80211_MCGRP_MLME, gfp);
16073         return;
16074
16075  nla_put_failure:
16076         nlmsg_free(msg);
16077 }
16078
16079 void cfg80211_ch_switch_notify(struct net_device *dev,
16080                                struct cfg80211_chan_def *chandef)
16081 {
16082         struct wireless_dev *wdev = dev->ieee80211_ptr;
16083         struct wiphy *wiphy = wdev->wiphy;
16084         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16085
16086         ASSERT_WDEV_LOCK(wdev);
16087
16088         trace_cfg80211_ch_switch_notify(dev, chandef);
16089
16090         wdev->chandef = *chandef;
16091         wdev->preset_chandef = *chandef;
16092
16093         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16094             !WARN_ON(!wdev->current_bss))
16095                 wdev->current_bss->pub.channel = chandef->chan;
16096
16097         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16098                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16099 }
16100 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16101
16102 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16103                                        struct cfg80211_chan_def *chandef,
16104                                        u8 count)
16105 {
16106         struct wireless_dev *wdev = dev->ieee80211_ptr;
16107         struct wiphy *wiphy = wdev->wiphy;
16108         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16109
16110         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16111
16112         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16113                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16114 }
16115 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16116
16117 void
16118 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16119                      const struct cfg80211_chan_def *chandef,
16120                      enum nl80211_radar_event event,
16121                      struct net_device *netdev, gfp_t gfp)
16122 {
16123         struct sk_buff *msg;
16124         void *hdr;
16125
16126         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16127         if (!msg)
16128                 return;
16129
16130         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16131         if (!hdr) {
16132                 nlmsg_free(msg);
16133                 return;
16134         }
16135
16136         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16137                 goto nla_put_failure;
16138
16139         /* NOP and radar events don't need a netdev parameter */
16140         if (netdev) {
16141                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16142
16143                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16144                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16145                                       NL80211_ATTR_PAD))
16146                         goto nla_put_failure;
16147         }
16148
16149         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16150                 goto nla_put_failure;
16151
16152         if (nl80211_send_chandef(msg, chandef))
16153                 goto nla_put_failure;
16154
16155         genlmsg_end(msg, hdr);
16156
16157         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16158                                 NL80211_MCGRP_MLME, gfp);
16159         return;
16160
16161  nla_put_failure:
16162         nlmsg_free(msg);
16163 }
16164
16165 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16166                                        struct sta_opmode_info *sta_opmode,
16167                                        gfp_t gfp)
16168 {
16169         struct sk_buff *msg;
16170         struct wireless_dev *wdev = dev->ieee80211_ptr;
16171         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16172         void *hdr;
16173
16174         if (WARN_ON(!mac))
16175                 return;
16176
16177         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16178         if (!msg)
16179                 return;
16180
16181         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16182         if (!hdr) {
16183                 nlmsg_free(msg);
16184                 return;
16185         }
16186
16187         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16188                 goto nla_put_failure;
16189
16190         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16191                 goto nla_put_failure;
16192
16193         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16194                 goto nla_put_failure;
16195
16196         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16197             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16198                 goto nla_put_failure;
16199
16200         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16201             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16202                 goto nla_put_failure;
16203
16204         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16205             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16206                 goto nla_put_failure;
16207
16208         genlmsg_end(msg, hdr);
16209
16210         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16211                                 NL80211_MCGRP_MLME, gfp);
16212
16213         return;
16214
16215 nla_put_failure:
16216         nlmsg_free(msg);
16217 }
16218 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16219
16220 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16221                            u64 cookie, bool acked, s32 ack_signal,
16222                            bool is_valid_ack_signal, gfp_t gfp)
16223 {
16224         struct wireless_dev *wdev = dev->ieee80211_ptr;
16225         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16226         struct sk_buff *msg;
16227         void *hdr;
16228
16229         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16230
16231         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16232
16233         if (!msg)
16234                 return;
16235
16236         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16237         if (!hdr) {
16238                 nlmsg_free(msg);
16239                 return;
16240         }
16241
16242         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16243             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16244             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16245             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16246                               NL80211_ATTR_PAD) ||
16247             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16248             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16249                                                 ack_signal)))
16250                 goto nla_put_failure;
16251
16252         genlmsg_end(msg, hdr);
16253
16254         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16255                                 NL80211_MCGRP_MLME, gfp);
16256         return;
16257
16258  nla_put_failure:
16259         nlmsg_free(msg);
16260 }
16261 EXPORT_SYMBOL(cfg80211_probe_status);
16262
16263 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16264                                  const u8 *frame, size_t len,
16265                                  int freq, int sig_dbm)
16266 {
16267         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16268         struct sk_buff *msg;
16269         void *hdr;
16270         struct cfg80211_beacon_registration *reg;
16271
16272         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16273
16274         spin_lock_bh(&rdev->beacon_registrations_lock);
16275         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16276                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16277                 if (!msg) {
16278                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16279                         return;
16280                 }
16281
16282                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16283                 if (!hdr)
16284                         goto nla_put_failure;
16285
16286                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16287                     (freq &&
16288                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16289                     (sig_dbm &&
16290                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16291                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16292                         goto nla_put_failure;
16293
16294                 genlmsg_end(msg, hdr);
16295
16296                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16297         }
16298         spin_unlock_bh(&rdev->beacon_registrations_lock);
16299         return;
16300
16301  nla_put_failure:
16302         spin_unlock_bh(&rdev->beacon_registrations_lock);
16303         nlmsg_free(msg);
16304 }
16305 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16306
16307 #ifdef CONFIG_PM
16308 static int cfg80211_net_detect_results(struct sk_buff *msg,
16309                                        struct cfg80211_wowlan_wakeup *wakeup)
16310 {
16311         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16312         struct nlattr *nl_results, *nl_match, *nl_freqs;
16313         int i, j;
16314
16315         nl_results = nla_nest_start_noflag(msg,
16316                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16317         if (!nl_results)
16318                 return -EMSGSIZE;
16319
16320         for (i = 0; i < nd->n_matches; i++) {
16321                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16322
16323                 nl_match = nla_nest_start_noflag(msg, i);
16324                 if (!nl_match)
16325                         break;
16326
16327                 /* The SSID attribute is optional in nl80211, but for
16328                  * simplicity reasons it's always present in the
16329                  * cfg80211 structure.  If a driver can't pass the
16330                  * SSID, that needs to be changed.  A zero length SSID
16331                  * is still a valid SSID (wildcard), so it cannot be
16332                  * used for this purpose.
16333                  */
16334                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16335                             match->ssid.ssid)) {
16336                         nla_nest_cancel(msg, nl_match);
16337                         goto out;
16338                 }
16339
16340                 if (match->n_channels) {
16341                         nl_freqs = nla_nest_start_noflag(msg,
16342                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16343                         if (!nl_freqs) {
16344                                 nla_nest_cancel(msg, nl_match);
16345                                 goto out;
16346                         }
16347
16348                         for (j = 0; j < match->n_channels; j++) {
16349                                 if (nla_put_u32(msg, j, match->channels[j])) {
16350                                         nla_nest_cancel(msg, nl_freqs);
16351                                         nla_nest_cancel(msg, nl_match);
16352                                         goto out;
16353                                 }
16354                         }
16355
16356                         nla_nest_end(msg, nl_freqs);
16357                 }
16358
16359                 nla_nest_end(msg, nl_match);
16360         }
16361
16362 out:
16363         nla_nest_end(msg, nl_results);
16364         return 0;
16365 }
16366
16367 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16368                                    struct cfg80211_wowlan_wakeup *wakeup,
16369                                    gfp_t gfp)
16370 {
16371         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16372         struct sk_buff *msg;
16373         void *hdr;
16374         int size = 200;
16375
16376         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16377
16378         if (wakeup)
16379                 size += wakeup->packet_present_len;
16380
16381         msg = nlmsg_new(size, gfp);
16382         if (!msg)
16383                 return;
16384
16385         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16386         if (!hdr)
16387                 goto free_msg;
16388
16389         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16390             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16391                               NL80211_ATTR_PAD))
16392                 goto free_msg;
16393
16394         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16395                                         wdev->netdev->ifindex))
16396                 goto free_msg;
16397
16398         if (wakeup) {
16399                 struct nlattr *reasons;
16400
16401                 reasons = nla_nest_start_noflag(msg,
16402                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16403                 if (!reasons)
16404                         goto free_msg;
16405
16406                 if (wakeup->disconnect &&
16407                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16408                         goto free_msg;
16409                 if (wakeup->magic_pkt &&
16410                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16411                         goto free_msg;
16412                 if (wakeup->gtk_rekey_failure &&
16413                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16414                         goto free_msg;
16415                 if (wakeup->eap_identity_req &&
16416                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16417                         goto free_msg;
16418                 if (wakeup->four_way_handshake &&
16419                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16420                         goto free_msg;
16421                 if (wakeup->rfkill_release &&
16422                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16423                         goto free_msg;
16424
16425                 if (wakeup->pattern_idx >= 0 &&
16426                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16427                                 wakeup->pattern_idx))
16428                         goto free_msg;
16429
16430                 if (wakeup->tcp_match &&
16431                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16432                         goto free_msg;
16433
16434                 if (wakeup->tcp_connlost &&
16435                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16436                         goto free_msg;
16437
16438                 if (wakeup->tcp_nomoretokens &&
16439                     nla_put_flag(msg,
16440                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16441                         goto free_msg;
16442
16443                 if (wakeup->packet) {
16444                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16445                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16446
16447                         if (!wakeup->packet_80211) {
16448                                 pkt_attr =
16449                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16450                                 len_attr =
16451                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16452                         }
16453
16454                         if (wakeup->packet_len &&
16455                             nla_put_u32(msg, len_attr, wakeup->packet_len))
16456                                 goto free_msg;
16457
16458                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16459                                     wakeup->packet))
16460                                 goto free_msg;
16461                 }
16462
16463                 if (wakeup->net_detect &&
16464                     cfg80211_net_detect_results(msg, wakeup))
16465                                 goto free_msg;
16466
16467                 nla_nest_end(msg, reasons);
16468         }
16469
16470         genlmsg_end(msg, hdr);
16471
16472         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16473                                 NL80211_MCGRP_MLME, gfp);
16474         return;
16475
16476  free_msg:
16477         nlmsg_free(msg);
16478 }
16479 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16480 #endif
16481
16482 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16483                                 enum nl80211_tdls_operation oper,
16484                                 u16 reason_code, gfp_t gfp)
16485 {
16486         struct wireless_dev *wdev = dev->ieee80211_ptr;
16487         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16488         struct sk_buff *msg;
16489         void *hdr;
16490
16491         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16492                                          reason_code);
16493
16494         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16495         if (!msg)
16496                 return;
16497
16498         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16499         if (!hdr) {
16500                 nlmsg_free(msg);
16501                 return;
16502         }
16503
16504         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16505             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16506             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16507             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16508             (reason_code > 0 &&
16509              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16510                 goto nla_put_failure;
16511
16512         genlmsg_end(msg, hdr);
16513
16514         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16515                                 NL80211_MCGRP_MLME, gfp);
16516         return;
16517
16518  nla_put_failure:
16519         nlmsg_free(msg);
16520 }
16521 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16522
16523 static int nl80211_netlink_notify(struct notifier_block * nb,
16524                                   unsigned long state,
16525                                   void *_notify)
16526 {
16527         struct netlink_notify *notify = _notify;
16528         struct cfg80211_registered_device *rdev;
16529         struct wireless_dev *wdev;
16530         struct cfg80211_beacon_registration *reg, *tmp;
16531
16532         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16533                 return NOTIFY_DONE;
16534
16535         rcu_read_lock();
16536
16537         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16538                 struct cfg80211_sched_scan_request *sched_scan_req;
16539
16540                 list_for_each_entry_rcu(sched_scan_req,
16541                                         &rdev->sched_scan_req_list,
16542                                         list) {
16543                         if (sched_scan_req->owner_nlportid == notify->portid) {
16544                                 sched_scan_req->nl_owner_dead = true;
16545                                 schedule_work(&rdev->sched_scan_stop_wk);
16546                         }
16547                 }
16548
16549                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16550                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
16551
16552                         if (wdev->owner_nlportid == notify->portid) {
16553                                 wdev->nl_owner_dead = true;
16554                                 schedule_work(&rdev->destroy_work);
16555                         } else if (wdev->conn_owner_nlportid == notify->portid) {
16556                                 schedule_work(&wdev->disconnect_wk);
16557                         }
16558
16559                         cfg80211_release_pmsr(wdev, notify->portid);
16560                 }
16561
16562                 spin_lock_bh(&rdev->beacon_registrations_lock);
16563                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16564                                          list) {
16565                         if (reg->nlportid == notify->portid) {
16566                                 list_del(&reg->list);
16567                                 kfree(reg);
16568                                 break;
16569                         }
16570                 }
16571                 spin_unlock_bh(&rdev->beacon_registrations_lock);
16572         }
16573
16574         rcu_read_unlock();
16575
16576         /*
16577          * It is possible that the user space process that is controlling the
16578          * indoor setting disappeared, so notify the regulatory core.
16579          */
16580         regulatory_netlink_notify(notify->portid);
16581         return NOTIFY_OK;
16582 }
16583
16584 static struct notifier_block nl80211_netlink_notifier = {
16585         .notifier_call = nl80211_netlink_notify,
16586 };
16587
16588 void cfg80211_ft_event(struct net_device *netdev,
16589                        struct cfg80211_ft_event_params *ft_event)
16590 {
16591         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16592         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16593         struct sk_buff *msg;
16594         void *hdr;
16595
16596         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16597
16598         if (!ft_event->target_ap)
16599                 return;
16600
16601         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16602                         GFP_KERNEL);
16603         if (!msg)
16604                 return;
16605
16606         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16607         if (!hdr)
16608                 goto out;
16609
16610         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16611             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16612             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16613                 goto out;
16614
16615         if (ft_event->ies &&
16616             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16617                 goto out;
16618         if (ft_event->ric_ies &&
16619             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16620                     ft_event->ric_ies))
16621                 goto out;
16622
16623         genlmsg_end(msg, hdr);
16624
16625         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16626                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16627         return;
16628  out:
16629         nlmsg_free(msg);
16630 }
16631 EXPORT_SYMBOL(cfg80211_ft_event);
16632
16633 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16634 {
16635         struct cfg80211_registered_device *rdev;
16636         struct sk_buff *msg;
16637         void *hdr;
16638         u32 nlportid;
16639
16640         rdev = wiphy_to_rdev(wdev->wiphy);
16641         if (!rdev->crit_proto_nlportid)
16642                 return;
16643
16644         nlportid = rdev->crit_proto_nlportid;
16645         rdev->crit_proto_nlportid = 0;
16646
16647         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16648         if (!msg)
16649                 return;
16650
16651         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16652         if (!hdr)
16653                 goto nla_put_failure;
16654
16655         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16656             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16657                               NL80211_ATTR_PAD))
16658                 goto nla_put_failure;
16659
16660         genlmsg_end(msg, hdr);
16661
16662         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16663         return;
16664
16665  nla_put_failure:
16666         nlmsg_free(msg);
16667 }
16668 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16669
16670 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16671 {
16672         struct wiphy *wiphy = wdev->wiphy;
16673         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16674         struct sk_buff *msg;
16675         void *hdr;
16676
16677         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16678         if (!msg)
16679                 return;
16680
16681         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16682         if (!hdr)
16683                 goto out;
16684
16685         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16686             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16687             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16688                               NL80211_ATTR_PAD))
16689                 goto out;
16690
16691         genlmsg_end(msg, hdr);
16692
16693         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16694                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16695         return;
16696  out:
16697         nlmsg_free(msg);
16698 }
16699
16700 int cfg80211_external_auth_request(struct net_device *dev,
16701                                    struct cfg80211_external_auth_params *params,
16702                                    gfp_t gfp)
16703 {
16704         struct wireless_dev *wdev = dev->ieee80211_ptr;
16705         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16706         struct sk_buff *msg;
16707         void *hdr;
16708
16709         if (!wdev->conn_owner_nlportid)
16710                 return -EINVAL;
16711
16712         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16713         if (!msg)
16714                 return -ENOMEM;
16715
16716         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16717         if (!hdr)
16718                 goto nla_put_failure;
16719
16720         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16721             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16722             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16723             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16724                         params->action) ||
16725             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16726             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16727                     params->ssid.ssid))
16728                 goto nla_put_failure;
16729
16730         genlmsg_end(msg, hdr);
16731         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16732                         wdev->conn_owner_nlportid);
16733         return 0;
16734
16735  nla_put_failure:
16736         nlmsg_free(msg);
16737         return -ENOBUFS;
16738 }
16739 EXPORT_SYMBOL(cfg80211_external_auth_request);
16740
16741 void cfg80211_update_owe_info_event(struct net_device *netdev,
16742                                     struct cfg80211_update_owe_info *owe_info,
16743                                     gfp_t gfp)
16744 {
16745         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16746         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16747         struct sk_buff *msg;
16748         void *hdr;
16749
16750         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
16751
16752         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16753         if (!msg)
16754                 return;
16755
16756         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
16757         if (!hdr)
16758                 goto nla_put_failure;
16759
16760         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16761             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16762             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
16763                 goto nla_put_failure;
16764
16765         if (!owe_info->ie_len ||
16766             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
16767                 goto nla_put_failure;
16768
16769         genlmsg_end(msg, hdr);
16770
16771         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16772                                 NL80211_MCGRP_MLME, gfp);
16773         return;
16774
16775 nla_put_failure:
16776         genlmsg_cancel(msg, hdr);
16777         nlmsg_free(msg);
16778 }
16779 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
16780
16781 /* initialisation/exit functions */
16782
16783 int __init nl80211_init(void)
16784 {
16785         int err;
16786
16787         err = genl_register_family(&nl80211_fam);
16788         if (err)
16789                 return err;
16790
16791         err = netlink_register_notifier(&nl80211_netlink_notifier);
16792         if (err)
16793                 goto err_out;
16794
16795         return 0;
16796  err_out:
16797         genl_unregister_family(&nl80211_fam);
16798         return err;
16799 }
16800
16801 void nl80211_exit(void)
16802 {
16803         netlink_unregister_notifier(&nl80211_netlink_notifier);
16804         genl_unregister_family(&nl80211_fam);
16805 }