drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /*
  12  * TODO:
  13  * - Add TSF sync and fix IBSS beacon transmission by adding
  14  *   competition for "air time" at TBTT
  15  * - RX filtering based on filter configuration (data->rx_filter)
  16  */
  17
  18 #include <linux/list.h>
  19 #include <linux/slab.h>
  20 #include <linux/spinlock.h>
  21 #include <net/dst.h>
  22 #include <net/xfrm.h>
  23 #include <net/mac80211.h>
  24 #include <net/ieee80211_radiotap.h>
  25 #include <linux/if_arp.h>
  26 #include <linux/rtnetlink.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/debugfs.h>
  30 #include <linux/module.h>
  31 #include <linux/ktime.h>
  32 #include <net/genetlink.h>
  33 #include <net/net_namespace.h>
  34 #include <net/netns/generic.h>
  35 #include "mac80211_hwsim.h"
  36
  37 #define WARN_QUEUE 100
  38 #define MAX_QUEUE 200
  39
  40 MODULE_AUTHOR("Jouni Malinen");
  41 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  42 MODULE_LICENSE("GPL");
  43
  44 static int radios = 2;
  45 module_param(radios, int, 0444);
  46 MODULE_PARM_DESC(radios, "Number of simulated radios");
  47
  48 static int channels = 1;
  49 module_param(channels, int, 0444);
  50 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  51
  52 static bool paged_rx = false;
  53 module_param(paged_rx, bool, 0644);
  54 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  55
  56 static bool rctbl = false;
  57 module_param(rctbl, bool, 0444);
  58 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  59
  60 static bool support_p2p_device = true;
  61 module_param(support_p2p_device, bool, 0444);
  62 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  63
  64 /**
  65  * enum hwsim_regtest - the type of regulatory tests we offer
  66  *
  67  * These are the different values you can use for the regtest
  68  * module parameter. This is useful to help test world roaming
  69  * and the driver regulatory_hint() call and combinations of these.
  70  * If you want to do specific alpha2 regulatory domain tests simply
  71  * use the userspace regulatory request as that will be respected as
  72  * well without the need of this module parameter. This is designed
  73  * only for testing the driver regulatory request, world roaming
  74  * and all possible combinations.
  75  *
  76  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  77  *      this is the default value.
  78  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  79  *      hint, only one driver regulatory hint will be sent as such the
  80  *      secondary radios are expected to follow.
  81  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  82  *      request with all radios reporting the same regulatory domain.
  83  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  84  *      different regulatory domains requests. Expected behaviour is for
  85  *      an intersection to occur but each device will still use their
  86  *      respective regulatory requested domains. Subsequent radios will
  87  *      use the resulting intersection.
  88  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  89  *      this by using a custom beacon-capable regulatory domain for the first
  90  *      radio. All other device world roam.
  91  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  92  *      domain requests. All radios will adhere to this custom world regulatory
  93  *      domain.
  94  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  95  *      domain requests. The first radio will adhere to the first custom world
  96  *      regulatory domain, the second one to the second custom world regulatory
  97  *      domain. All other devices will world roam.
  98  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
  99  *      settings, only the first radio will send a regulatory domain request
 100  *      and use strict settings. The rest of the radios are expected to follow.
 101  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 102  *      settings. All radios will adhere to this.
 103  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 104  *      domain settings, combined with secondary driver regulatory domain
 105  *      settings. The first radio will get a strict regulatory domain setting
 106  *      using the first driver regulatory request and the second radio will use
 107  *      non-strict settings using the second driver regulatory request. All
 108  *      other devices should follow the intersection created between the
 109  *      first two.
 110  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 111  *      at least 6 radios for a complete test. We will test in this order:
 112  *      1 - driver custom world regulatory domain
 113  *      2 - second custom world regulatory domain
 114  *      3 - first driver regulatory domain request
 115  *      4 - second driver regulatory domain request
 116  *      5 - strict regulatory domain settings using the third driver regulatory
 117  *          domain request
 118  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 119  *                 regulatory requests.
 120  */
 121 enum hwsim_regtest {
 122         HWSIM_REGTEST_DISABLED = 0,
 123         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 124         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 125         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 126         HWSIM_REGTEST_WORLD_ROAM = 4,
 127         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 128         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 129         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 130         HWSIM_REGTEST_STRICT_ALL = 8,
 131         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 132         HWSIM_REGTEST_ALL = 10,
 133 };
 134
 135 /* Set to one of the HWSIM_REGTEST_* values above */
 136 static int regtest = HWSIM_REGTEST_DISABLED;
 137 module_param(regtest, int, 0444);
 138 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 139
 140 static const char *hwsim_alpha2s[] = {
 141         "FI",
 142         "AL",
 143         "US",
 144         "DE",
 145         "JP",
 146         "AL",
 147 };
 148
 149 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 150         .n_reg_rules = 4,
 151         .alpha2 =  "99",
 152         .reg_rules = {
 153                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 154                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 155                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 156                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 157         }
 158 };
 159
 160 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 161         .n_reg_rules = 2,
 162         .alpha2 =  "99",
 163         .reg_rules = {
 164                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 165                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 166                          NL80211_RRF_NO_IR),
 167         }
 168 };
 169
 170 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 171         &hwsim_world_regdom_custom_01,
 172         &hwsim_world_regdom_custom_02,
 173 };
 174
 175 struct hwsim_vif_priv {
 176         u32 magic;
 177         u8 bssid[ETH_ALEN];
 178         bool assoc;
 179         bool bcn_en;
 180         u16 aid;
 181 };
 182
 183 #define HWSIM_VIF_MAGIC 0x69537748
 184
 185 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 186 {
 187         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 188         WARN(vp->magic != HWSIM_VIF_MAGIC,
 189              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 190              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 191 }
 192
 193 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 194 {
 195         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 196         vp->magic = HWSIM_VIF_MAGIC;
 197 }
 198
 199 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 200 {
 201         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 202         vp->magic = 0;
 203 }
 204
 205 struct hwsim_sta_priv {
 206         u32 magic;
 207 };
 208
 209 #define HWSIM_STA_MAGIC 0x6d537749
 210
 211 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 212 {
 213         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 214         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 215 }
 216
 217 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 218 {
 219         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 220         sp->magic = HWSIM_STA_MAGIC;
 221 }
 222
 223 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 224 {
 225         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 226         sp->magic = 0;
 227 }
 228
 229 struct hwsim_chanctx_priv {
 230         u32 magic;
 231 };
 232
 233 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 234
 235 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 236 {
 237         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 238         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 239 }
 240
 241 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 242 {
 243         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 244         cp->magic = HWSIM_CHANCTX_MAGIC;
 245 }
 246
 247 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 248 {
 249         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 250         cp->magic = 0;
 251 }
 252
 253 static int hwsim_net_id;
 254
 255 static int hwsim_netgroup;
 256
 257 struct hwsim_net {
 258         int netgroup;
 259         u32 wmediumd;
 260 };
 261
 262 static inline int hwsim_net_get_netgroup(struct net *net)
 263 {
 264         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 265
 266         return hwsim_net->netgroup;
 267 }
 268
 269 static inline void hwsim_net_set_netgroup(struct net *net)
 270 {
 271         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 272
 273         hwsim_net->netgroup = hwsim_netgroup++;
 274 }
 275
 276 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 277 {
 278         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 279
 280         return hwsim_net->wmediumd;
 281 }
 282
 283 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 284 {
 285         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 286
 287         hwsim_net->wmediumd = portid;
 288 }
 289
 290 static struct class *hwsim_class;
 291
 292 static struct net_device *hwsim_mon; /* global monitor netdev */
 293
 294 #define CHAN2G(_freq)  { \
 295         .band = NL80211_BAND_2GHZ, \
 296         .center_freq = (_freq), \
 297         .hw_value = (_freq), \
 298         .max_power = 20, \
 299 }
 300
 301 #define CHAN5G(_freq) { \
 302         .band = NL80211_BAND_5GHZ, \
 303         .center_freq = (_freq), \
 304         .hw_value = (_freq), \
 305         .max_power = 20, \
 306 }
 307
 308 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 309         CHAN2G(2412), /* Channel 1 */
 310         CHAN2G(2417), /* Channel 2 */
 311         CHAN2G(2422), /* Channel 3 */
 312         CHAN2G(2427), /* Channel 4 */
 313         CHAN2G(2432), /* Channel 5 */
 314         CHAN2G(2437), /* Channel 6 */
 315         CHAN2G(2442), /* Channel 7 */
 316         CHAN2G(2447), /* Channel 8 */
 317         CHAN2G(2452), /* Channel 9 */
 318         CHAN2G(2457), /* Channel 10 */
 319         CHAN2G(2462), /* Channel 11 */
 320         CHAN2G(2467), /* Channel 12 */
 321         CHAN2G(2472), /* Channel 13 */
 322         CHAN2G(2484), /* Channel 14 */
 323 };
 324
 325 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 326         CHAN5G(5180), /* Channel 36 */
 327         CHAN5G(5200), /* Channel 40 */
 328         CHAN5G(5220), /* Channel 44 */
 329         CHAN5G(5240), /* Channel 48 */
 330
 331         CHAN5G(5260), /* Channel 52 */
 332         CHAN5G(5280), /* Channel 56 */
 333         CHAN5G(5300), /* Channel 60 */
 334         CHAN5G(5320), /* Channel 64 */
 335
 336         CHAN5G(5500), /* Channel 100 */
 337         CHAN5G(5520), /* Channel 104 */
 338         CHAN5G(5540), /* Channel 108 */
 339         CHAN5G(5560), /* Channel 112 */
 340         CHAN5G(5580), /* Channel 116 */
 341         CHAN5G(5600), /* Channel 120 */
 342         CHAN5G(5620), /* Channel 124 */
 343         CHAN5G(5640), /* Channel 128 */
 344         CHAN5G(5660), /* Channel 132 */
 345         CHAN5G(5680), /* Channel 136 */
 346         CHAN5G(5700), /* Channel 140 */
 347
 348         CHAN5G(5745), /* Channel 149 */
 349         CHAN5G(5765), /* Channel 153 */
 350         CHAN5G(5785), /* Channel 157 */
 351         CHAN5G(5805), /* Channel 161 */
 352         CHAN5G(5825), /* Channel 165 */
 353 };
 354
 355 static const struct ieee80211_rate hwsim_rates[] = {
 356         { .bitrate = 10 },
 357         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 358         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 359         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 360         { .bitrate = 60 },
 361         { .bitrate = 90 },
 362         { .bitrate = 120 },
 363         { .bitrate = 180 },
 364         { .bitrate = 240 },
 365         { .bitrate = 360 },
 366         { .bitrate = 480 },
 367         { .bitrate = 540 }
 368 };
 369
 370 #define OUI_QCA 0x001374
 371 #define QCA_NL80211_SUBCMD_TEST 1
 372 enum qca_nl80211_vendor_subcmds {
 373         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 374         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 375 };
 376
 377 static const struct nla_policy
 378 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 379         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 380 };
 381
 382 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 383                                           struct wireless_dev *wdev,
 384                                           const void *data, int data_len)
 385 {
 386         struct sk_buff *skb;
 387         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 388         int err;
 389         u32 val;
 390
 391         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
 392                         hwsim_vendor_test_policy);
 393         if (err)
 394                 return err;
 395         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 396                 return -EINVAL;
 397         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 398         wiphy_debug(wiphy, "%s: test=%u\n", __func__, val);
 399
 400         /* Send a vendor event as a test. Note that this would not normally be
 401          * done within a command handler, but rather, based on some other
 402          * trigger. For simplicity, this command is used to trigger the event
 403          * here.
 404          *
 405          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 406          */
 407         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 408         if (skb) {
 409                 /* skb_put() or nla_put() will fill up data within
 410                  * NL80211_ATTR_VENDOR_DATA.
 411                  */
 412
 413                 /* Add vendor data */
 414                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 415
 416                 /* Send the event - this will call nla_nest_end() */
 417                 cfg80211_vendor_event(skb, GFP_KERNEL);
 418         }
 419
 420         /* Send a response to the command */
 421         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 422         if (!skb)
 423                 return -ENOMEM;
 424
 425         /* skb_put() or nla_put() will fill up data within
 426          * NL80211_ATTR_VENDOR_DATA
 427          */
 428         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 429
 430         return cfg80211_vendor_cmd_reply(skb);
 431 }
 432
 433 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 434         {
 435                 .info = { .vendor_id = OUI_QCA,
 436                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 437                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 438                 .doit = mac80211_hwsim_vendor_cmd_test,
 439         }
 440 };
 441
 442 /* Advertise support vendor specific events */
 443 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 444         { .vendor_id = OUI_QCA, .subcmd = 1 },
 445 };
 446
 447 static const struct ieee80211_iface_limit hwsim_if_limits[] = {
 448         { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
 449         { .max = 2048,  .types = BIT(NL80211_IFTYPE_STATION) |
 450                                  BIT(NL80211_IFTYPE_P2P_CLIENT) |
 451 #ifdef CONFIG_MAC80211_MESH
 452                                  BIT(NL80211_IFTYPE_MESH_POINT) |
 453 #endif
 454                                  BIT(NL80211_IFTYPE_AP) |
 455                                  BIT(NL80211_IFTYPE_P2P_GO) },
 456         /* must be last, see hwsim_if_comb */
 457         { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
 458 };
 459
 460 static const struct ieee80211_iface_combination hwsim_if_comb[] = {
 461         {
 462                 .limits = hwsim_if_limits,
 463                 /* remove the last entry which is P2P_DEVICE */
 464                 .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
 465                 .max_interfaces = 2048,
 466                 .num_different_channels = 1,
 467                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 468                                        BIT(NL80211_CHAN_WIDTH_20) |
 469                                        BIT(NL80211_CHAN_WIDTH_40) |
 470                                        BIT(NL80211_CHAN_WIDTH_80) |
 471                                        BIT(NL80211_CHAN_WIDTH_160),
 472         },
 473 };
 474
 475 static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
 476         {
 477                 .limits = hwsim_if_limits,
 478                 .n_limits = ARRAY_SIZE(hwsim_if_limits),
 479                 .max_interfaces = 2048,
 480                 .num_different_channels = 1,
 481                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 482                                        BIT(NL80211_CHAN_WIDTH_20) |
 483                                        BIT(NL80211_CHAN_WIDTH_40) |
 484                                        BIT(NL80211_CHAN_WIDTH_80) |
 485                                        BIT(NL80211_CHAN_WIDTH_160),
 486         },
 487 };
 488
 489 static spinlock_t hwsim_radio_lock;
 490 static LIST_HEAD(hwsim_radios);
 491 static int hwsim_radio_idx;
 492
 493 static struct platform_driver mac80211_hwsim_driver = {
 494         .driver = {
 495                 .name = "mac80211_hwsim",
 496         },
 497 };
 498
 499 struct mac80211_hwsim_data {
 500         struct list_head list;
 501         struct ieee80211_hw *hw;
 502         struct device *dev;
 503         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 504         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 505         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 506         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 507         struct ieee80211_iface_combination if_combination;
 508
 509         struct mac_address addresses[2];
 510         int channels, idx;
 511         bool use_chanctx;
 512         bool destroy_on_close;
 513         struct work_struct destroy_work;
 514         u32 portid;
 515         char alpha2[2];
 516         const struct ieee80211_regdomain *regd;
 517
 518         struct ieee80211_channel *tmp_chan;
 519         struct ieee80211_channel *roc_chan;
 520         u32 roc_duration;
 521         struct delayed_work roc_start;
 522         struct delayed_work roc_done;
 523         struct delayed_work hw_scan;
 524         struct cfg80211_scan_request *hw_scan_request;
 525         struct ieee80211_vif *hw_scan_vif;
 526         int scan_chan_idx;
 527         u8 scan_addr[ETH_ALEN];
 528
 529         struct ieee80211_channel *channel;
 530         u64 beacon_int  /* beacon interval in us */;
 531         unsigned int rx_filter;
 532         bool started, idle, scanning;
 533         struct mutex mutex;
 534         struct tasklet_hrtimer beacon_timer;
 535         enum ps_mode {
 536                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 537         } ps;
 538         bool ps_poll_pending;
 539         struct dentry *debugfs;
 540
 541         uintptr_t pending_cookie;
 542         struct sk_buff_head pending;    /* packets pending */
 543         /*
 544          * Only radios in the same group can communicate together (the
 545          * channel has to match too). Each bit represents a group. A
 546          * radio can be in more than one group.
 547          */
 548         u64 group;
 549
 550         /* group shared by radios created in the same netns */
 551         int netgroup;
 552         /* wmediumd portid responsible for netgroup of this radio */
 553         u32 wmediumd;
 554
 555         int power_level;
 556
 557         /* difference between this hw's clock and the real clock, in usecs */
 558         s64 tsf_offset;
 559         s64 bcn_delta;
 560         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 561         u64 abs_bcn_ts;
 562
 563         /* Stats */
 564         u64 tx_pkts;
 565         u64 rx_pkts;
 566         u64 tx_bytes;
 567         u64 rx_bytes;
 568         u64 tx_dropped;
 569         u64 tx_failed;
 570 };
 571
 572
 573 struct hwsim_radiotap_hdr {
 574         struct ieee80211_radiotap_header hdr;
 575         __le64 rt_tsft;
 576         u8 rt_flags;
 577         u8 rt_rate;
 578         __le16 rt_channel;
 579         __le16 rt_chbitmask;
 580 } __packed;
 581
 582 struct hwsim_radiotap_ack_hdr {
 583         struct ieee80211_radiotap_header hdr;
 584         u8 rt_flags;
 585         u8 pad;
 586         __le16 rt_channel;
 587         __le16 rt_chbitmask;
 588 } __packed;
 589
 590 /* MAC80211_HWSIM netlinf family */
 591 static struct genl_family hwsim_genl_family = {
 592         .hdrsize = 0,
 593         .name = "MAC80211_HWSIM",
 594         .version = 1,
 595         .maxattr = HWSIM_ATTR_MAX,
 596         .netnsok = true,
 597 };
 598
 599 enum hwsim_multicast_groups {
 600         HWSIM_MCGRP_CONFIG,
 601 };
 602
 603 static const struct genl_multicast_group hwsim_mcgrps[] = {
 604         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 605 };
 606
 607 /* MAC80211_HWSIM netlink policy */
 608
 609 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 610         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 611         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 612         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 613                                .len = IEEE80211_MAX_DATA_LEN },
 614         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 615         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 616         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 617         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 618                                  .len = IEEE80211_TX_MAX_RATES *
 619                                         sizeof(struct hwsim_tx_rate)},
 620         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 621         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 622         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 623         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 624         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 625         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 626         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 627         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 628         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 629         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 630         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 631 };
 632
 633 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 634                                     struct sk_buff *skb,
 635                                     struct ieee80211_channel *chan);
 636
 637 /* sysfs attributes */
 638 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 639 {
 640         struct mac80211_hwsim_data *data = dat;
 641         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 642         struct sk_buff *skb;
 643         struct ieee80211_pspoll *pspoll;
 644
 645         if (!vp->assoc)
 646                 return;
 647
 648         wiphy_debug(data->hw->wiphy,
 649                     "%s: send PS-Poll to %pM for aid %d\n",
 650                     __func__, vp->bssid, vp->aid);
 651
 652         skb = dev_alloc_skb(sizeof(*pspoll));
 653         if (!skb)
 654                 return;
 655         pspoll = (void *) skb_put(skb, sizeof(*pspoll));
 656         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 657                                             IEEE80211_STYPE_PSPOLL |
 658                                             IEEE80211_FCTL_PM);
 659         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 660         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 661         memcpy(pspoll->ta, mac, ETH_ALEN);
 662
 663         rcu_read_lock();
 664         mac80211_hwsim_tx_frame(data->hw, skb,
 665                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 666         rcu_read_unlock();
 667 }
 668
 669 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 670                                 struct ieee80211_vif *vif, int ps)
 671 {
 672         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 673         struct sk_buff *skb;
 674         struct ieee80211_hdr *hdr;
 675
 676         if (!vp->assoc)
 677                 return;
 678
 679         wiphy_debug(data->hw->wiphy,
 680                     "%s: send data::nullfunc to %pM ps=%d\n",
 681                     __func__, vp->bssid, ps);
 682
 683         skb = dev_alloc_skb(sizeof(*hdr));
 684         if (!skb)
 685                 return;
 686         hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 687         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 688                                          IEEE80211_STYPE_NULLFUNC |
 689                                          (ps ? IEEE80211_FCTL_PM : 0));
 690         hdr->duration_id = cpu_to_le16(0);
 691         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 692         memcpy(hdr->addr2, mac, ETH_ALEN);
 693         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 694
 695         rcu_read_lock();
 696         mac80211_hwsim_tx_frame(data->hw, skb,
 697                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 698         rcu_read_unlock();
 699 }
 700
 701
 702 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 703                                    struct ieee80211_vif *vif)
 704 {
 705         struct mac80211_hwsim_data *data = dat;
 706         hwsim_send_nullfunc(data, mac, vif, 1);
 707 }
 708
 709 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 710                                       struct ieee80211_vif *vif)
 711 {
 712         struct mac80211_hwsim_data *data = dat;
 713         hwsim_send_nullfunc(data, mac, vif, 0);
 714 }
 715
 716 static int hwsim_fops_ps_read(void *dat, u64 *val)
 717 {
 718         struct mac80211_hwsim_data *data = dat;
 719         *val = data->ps;
 720         return 0;
 721 }
 722
 723 static int hwsim_fops_ps_write(void *dat, u64 val)
 724 {
 725         struct mac80211_hwsim_data *data = dat;
 726         enum ps_mode old_ps;
 727
 728         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 729             val != PS_MANUAL_POLL)
 730                 return -EINVAL;
 731
 732         old_ps = data->ps;
 733         data->ps = val;
 734
 735         local_bh_disable();
 736         if (val == PS_MANUAL_POLL) {
 737                 ieee80211_iterate_active_interfaces_atomic(
 738                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 739                         hwsim_send_ps_poll, data);
 740                 data->ps_poll_pending = true;
 741         } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 742                 ieee80211_iterate_active_interfaces_atomic(
 743                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 744                         hwsim_send_nullfunc_ps, data);
 745         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 746                 ieee80211_iterate_active_interfaces_atomic(
 747                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 748                         hwsim_send_nullfunc_no_ps, data);
 749         }
 750         local_bh_enable();
 751
 752         return 0;
 753 }
 754
 755 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 756                         "%llu\n");
 757
 758 static int hwsim_write_simulate_radar(void *dat, u64 val)
 759 {
 760         struct mac80211_hwsim_data *data = dat;
 761
 762         ieee80211_radar_detected(data->hw);
 763
 764         return 0;
 765 }
 766
 767 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 768                         hwsim_write_simulate_radar, "%llu\n");
 769
 770 static int hwsim_fops_group_read(void *dat, u64 *val)
 771 {
 772         struct mac80211_hwsim_data *data = dat;
 773         *val = data->group;
 774         return 0;
 775 }
 776
 777 static int hwsim_fops_group_write(void *dat, u64 val)
 778 {
 779         struct mac80211_hwsim_data *data = dat;
 780         data->group = val;
 781         return 0;
 782 }
 783
 784 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 785                         hwsim_fops_group_read, hwsim_fops_group_write,
 786                         "%llx\n");
 787
 788 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 789                                         struct net_device *dev)
 790 {
 791         /* TODO: allow packet injection */
 792         dev_kfree_skb(skb);
 793         return NETDEV_TX_OK;
 794 }
 795
 796 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 797 {
 798         return ktime_to_us(ktime_get_real());
 799 }
 800
 801 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 802 {
 803         u64 now = mac80211_hwsim_get_tsf_raw();
 804         return cpu_to_le64(now + data->tsf_offset);
 805 }
 806
 807 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 808                                   struct ieee80211_vif *vif)
 809 {
 810         struct mac80211_hwsim_data *data = hw->priv;
 811         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 812 }
 813
 814 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 815                 struct ieee80211_vif *vif, u64 tsf)
 816 {
 817         struct mac80211_hwsim_data *data = hw->priv;
 818         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 819         u32 bcn_int = data->beacon_int;
 820         u64 delta = abs(tsf - now);
 821
 822         /* adjust after beaconing with new timestamp at old TBTT */
 823         if (tsf > now) {
 824                 data->tsf_offset += delta;
 825                 data->bcn_delta = do_div(delta, bcn_int);
 826         } else {
 827                 data->tsf_offset -= delta;
 828                 data->bcn_delta = -do_div(delta, bcn_int);
 829         }
 830 }
 831
 832 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 833                                       struct sk_buff *tx_skb,
 834                                       struct ieee80211_channel *chan)
 835 {
 836         struct mac80211_hwsim_data *data = hw->priv;
 837         struct sk_buff *skb;
 838         struct hwsim_radiotap_hdr *hdr;
 839         u16 flags;
 840         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 841         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 842
 843         if (WARN_ON(!txrate))
 844                 return;
 845
 846         if (!netif_running(hwsim_mon))
 847                 return;
 848
 849         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 850         if (skb == NULL)
 851                 return;
 852
 853         hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
 854         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 855         hdr->hdr.it_pad = 0;
 856         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 857         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 858                                           (1 << IEEE80211_RADIOTAP_RATE) |
 859                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 860                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 861         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 862         hdr->rt_flags = 0;
 863         hdr->rt_rate = txrate->bitrate / 5;
 864         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 865         flags = IEEE80211_CHAN_2GHZ;
 866         if (txrate->flags & IEEE80211_RATE_ERP_G)
 867                 flags |= IEEE80211_CHAN_OFDM;
 868         else
 869                 flags |= IEEE80211_CHAN_CCK;
 870         hdr->rt_chbitmask = cpu_to_le16(flags);
 871
 872         skb->dev = hwsim_mon;
 873         skb_reset_mac_header(skb);
 874         skb->ip_summed = CHECKSUM_UNNECESSARY;
 875         skb->pkt_type = PACKET_OTHERHOST;
 876         skb->protocol = htons(ETH_P_802_2);
 877         memset(skb->cb, 0, sizeof(skb->cb));
 878         netif_rx(skb);
 879 }
 880
 881
 882 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 883                                        const u8 *addr)
 884 {
 885         struct sk_buff *skb;
 886         struct hwsim_radiotap_ack_hdr *hdr;
 887         u16 flags;
 888         struct ieee80211_hdr *hdr11;
 889
 890         if (!netif_running(hwsim_mon))
 891                 return;
 892
 893         skb = dev_alloc_skb(100);
 894         if (skb == NULL)
 895                 return;
 896
 897         hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
 898         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 899         hdr->hdr.it_pad = 0;
 900         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 901         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 902                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 903         hdr->rt_flags = 0;
 904         hdr->pad = 0;
 905         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 906         flags = IEEE80211_CHAN_2GHZ;
 907         hdr->rt_chbitmask = cpu_to_le16(flags);
 908
 909         hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
 910         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 911                                            IEEE80211_STYPE_ACK);
 912         hdr11->duration_id = cpu_to_le16(0);
 913         memcpy(hdr11->addr1, addr, ETH_ALEN);
 914
 915         skb->dev = hwsim_mon;
 916         skb_reset_mac_header(skb);
 917         skb->ip_summed = CHECKSUM_UNNECESSARY;
 918         skb->pkt_type = PACKET_OTHERHOST;
 919         skb->protocol = htons(ETH_P_802_2);
 920         memset(skb->cb, 0, sizeof(skb->cb));
 921         netif_rx(skb);
 922 }
 923
 924 struct mac80211_hwsim_addr_match_data {
 925         u8 addr[ETH_ALEN];
 926         bool ret;
 927 };
 928
 929 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 930                                      struct ieee80211_vif *vif)
 931 {
 932         struct mac80211_hwsim_addr_match_data *md = data;
 933
 934         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 935                 md->ret = true;
 936 }
 937
 938 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 939                                       const u8 *addr)
 940 {
 941         struct mac80211_hwsim_addr_match_data md = {
 942                 .ret = false,
 943         };
 944
 945         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 946                 return true;
 947
 948         memcpy(md.addr, addr, ETH_ALEN);
 949
 950         ieee80211_iterate_active_interfaces_atomic(data->hw,
 951                                                    IEEE80211_IFACE_ITER_NORMAL,
 952                                                    mac80211_hwsim_addr_iter,
 953                                                    &md);
 954
 955         return md.ret;
 956 }
 957
 958 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 959                            struct sk_buff *skb)
 960 {
 961         switch (data->ps) {
 962         case PS_DISABLED:
 963                 return true;
 964         case PS_ENABLED:
 965                 return false;
 966         case PS_AUTO_POLL:
 967                 /* TODO: accept (some) Beacons by default and other frames only
 968                  * if pending PS-Poll has been sent */
 969                 return true;
 970         case PS_MANUAL_POLL:
 971                 /* Allow unicast frames to own address if there is a pending
 972                  * PS-Poll */
 973                 if (data->ps_poll_pending &&
 974                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 975                         data->ps_poll_pending = false;
 976                         return true;
 977                 }
 978                 return false;
 979         }
 980
 981         return true;
 982 }
 983
 984 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 985                                   struct sk_buff *skb, int portid)
 986 {
 987         struct net *net;
 988         bool found = false;
 989         int res = -ENOENT;
 990
 991         rcu_read_lock();
 992         for_each_net_rcu(net) {
 993                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 994                         res = genlmsg_unicast(net, skb, portid);
 995                         found = true;
 996                         break;
 997                 }
 998         }
 999         rcu_read_unlock();
1000
1001         if (!found)
1002                 nlmsg_free(skb);
1003
1004         return res;
1005 }
1006
1007 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1008                                        struct sk_buff *my_skb,
1009                                        int dst_portid)
1010 {
1011         struct sk_buff *skb;
1012         struct mac80211_hwsim_data *data = hw->priv;
1013         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1014         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1015         void *msg_head;
1016         unsigned int hwsim_flags = 0;
1017         int i;
1018         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1019         uintptr_t cookie;
1020
1021         if (data->ps != PS_DISABLED)
1022                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1023         /* If the queue contains MAX_QUEUE skb's drop some */
1024         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1025                 /* Droping until WARN_QUEUE level */
1026                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1027                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1028                         data->tx_dropped++;
1029                 }
1030         }
1031
1032         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1033         if (skb == NULL)
1034                 goto nla_put_failure;
1035
1036         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1037                                HWSIM_CMD_FRAME);
1038         if (msg_head == NULL) {
1039                 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
1040                 goto nla_put_failure;
1041         }
1042
1043         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1044                     ETH_ALEN, data->addresses[1].addr))
1045                 goto nla_put_failure;
1046
1047         /* We get the skb->data */
1048         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1049                 goto nla_put_failure;
1050
1051         /* We get the flags for this transmission, and we translate them to
1052            wmediumd flags  */
1053
1054         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1055                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1056
1057         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1058                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1059
1060         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1061                 goto nla_put_failure;
1062
1063         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1064                 goto nla_put_failure;
1065
1066         /* We get the tx control (rate and retries) info*/
1067
1068         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1069                 tx_attempts[i].idx = info->status.rates[i].idx;
1070                 tx_attempts[i].count = info->status.rates[i].count;
1071         }
1072
1073         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1074                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1075                     tx_attempts))
1076                 goto nla_put_failure;
1077
1078         /* We create a cookie to identify this skb */
1079         data->pending_cookie++;
1080         cookie = data->pending_cookie;
1081         info->rate_driver_data[0] = (void *)cookie;
1082         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1083                 goto nla_put_failure;
1084
1085         genlmsg_end(skb, msg_head);
1086         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1087                 goto err_free_txskb;
1088
1089         /* Enqueue the packet */
1090         skb_queue_tail(&data->pending, my_skb);
1091         data->tx_pkts++;
1092         data->tx_bytes += my_skb->len;
1093         return;
1094
1095 nla_put_failure:
1096         nlmsg_free(skb);
1097 err_free_txskb:
1098         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1099         ieee80211_free_txskb(hw, my_skb);
1100         data->tx_failed++;
1101 }
1102
1103 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1104                                struct ieee80211_channel *c2)
1105 {
1106         if (!c1 || !c2)
1107                 return false;
1108
1109         return c1->center_freq == c2->center_freq;
1110 }
1111
1112 struct tx_iter_data {
1113         struct ieee80211_channel *channel;
1114         bool receive;
1115 };
1116
1117 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1118                                    struct ieee80211_vif *vif)
1119 {
1120         struct tx_iter_data *data = _data;
1121
1122         if (!vif->chanctx_conf)
1123                 return;
1124
1125         if (!hwsim_chans_compat(data->channel,
1126                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1127                 return;
1128
1129         data->receive = true;
1130 }
1131
1132 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1133 {
1134         /*
1135          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1136          * e.g. like this:
1137          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1138          * (but you should use a valid OUI, not that)
1139          *
1140          * If anyone wants to 'donate' a radiotap OUI/subns code
1141          * please send a patch removing this #ifdef and changing
1142          * the values accordingly.
1143          */
1144 #ifdef HWSIM_RADIOTAP_OUI
1145         struct ieee80211_vendor_radiotap *rtap;
1146
1147         /*
1148          * Note that this code requires the headroom in the SKB
1149          * that was allocated earlier.
1150          */
1151         rtap = (void *)skb_push(skb, sizeof(*rtap) + 8 + 4);
1152         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1153         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1154         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1155         rtap->subns = 127;
1156
1157         /*
1158          * Radiotap vendor namespaces can (and should) also be
1159          * split into fields by using the standard radiotap
1160          * presence bitmap mechanism. Use just BIT(0) here for
1161          * the presence bitmap.
1162          */
1163         rtap->present = BIT(0);
1164         /* We have 8 bytes of (dummy) data */
1165         rtap->len = 8;
1166         /* For testing, also require it to be aligned */
1167         rtap->align = 8;
1168         /* And also test that padding works, 4 bytes */
1169         rtap->pad = 4;
1170         /* push the data */
1171         memcpy(rtap->data, "ABCDEFGH", 8);
1172         /* make sure to clear padding, mac80211 doesn't */
1173         memset(rtap->data + 8, 0, 4);
1174
1175         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1176 #endif
1177 }
1178
1179 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1180                                           struct sk_buff *skb,
1181                                           struct ieee80211_channel *chan)
1182 {
1183         struct mac80211_hwsim_data *data = hw->priv, *data2;
1184         bool ack = false;
1185         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1186         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1187         struct ieee80211_rx_status rx_status;
1188         u64 now;
1189
1190         memset(&rx_status, 0, sizeof(rx_status));
1191         rx_status.flag |= RX_FLAG_MACTIME_START;
1192         rx_status.freq = chan->center_freq;
1193         rx_status.band = chan->band;
1194         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1195                 rx_status.rate_idx =
1196                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1197                 rx_status.vht_nss =
1198                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1199                 rx_status.flag |= RX_FLAG_VHT;
1200         } else {
1201                 rx_status.rate_idx = info->control.rates[0].idx;
1202                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1203                         rx_status.flag |= RX_FLAG_HT;
1204         }
1205         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1206                 rx_status.flag |= RX_FLAG_40MHZ;
1207         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1208                 rx_status.flag |= RX_FLAG_SHORT_GI;
1209         /* TODO: simulate real signal strength (and optional packet loss) */
1210         rx_status.signal = data->power_level - 50;
1211
1212         if (data->ps != PS_DISABLED)
1213                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1214
1215         /* release the skb's source info */
1216         skb_orphan(skb);
1217         skb_dst_drop(skb);
1218         skb->mark = 0;
1219         secpath_reset(skb);
1220         nf_reset(skb);
1221
1222         /*
1223          * Get absolute mactime here so all HWs RX at the "same time", and
1224          * absolute TX time for beacon mactime so the timestamp matches.
1225          * Giving beacons a different mactime than non-beacons looks messy, but
1226          * it helps the Toffset be exact and a ~10us mactime discrepancy
1227          * probably doesn't really matter.
1228          */
1229         if (ieee80211_is_beacon(hdr->frame_control) ||
1230             ieee80211_is_probe_resp(hdr->frame_control))
1231                 now = data->abs_bcn_ts;
1232         else
1233                 now = mac80211_hwsim_get_tsf_raw();
1234
1235         /* Copy skb to all enabled radios that are on the current frequency */
1236         spin_lock(&hwsim_radio_lock);
1237         list_for_each_entry(data2, &hwsim_radios, list) {
1238                 struct sk_buff *nskb;
1239                 struct tx_iter_data tx_iter_data = {
1240                         .receive = false,
1241                         .channel = chan,
1242                 };
1243
1244                 if (data == data2)
1245                         continue;
1246
1247                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1248                     !hwsim_ps_rx_ok(data2, skb))
1249                         continue;
1250
1251                 if (!(data->group & data2->group))
1252                         continue;
1253
1254                 if (data->netgroup != data2->netgroup)
1255                         continue;
1256
1257                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1258                     !hwsim_chans_compat(chan, data2->channel)) {
1259                         ieee80211_iterate_active_interfaces_atomic(
1260                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1261                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1262                         if (!tx_iter_data.receive)
1263                                 continue;
1264                 }
1265
1266                 /*
1267                  * reserve some space for our vendor and the normal
1268                  * radiotap header, since we're copying anyway
1269                  */
1270                 if (skb->len < PAGE_SIZE && paged_rx) {
1271                         struct page *page = alloc_page(GFP_ATOMIC);
1272
1273                         if (!page)
1274                                 continue;
1275
1276                         nskb = dev_alloc_skb(128);
1277                         if (!nskb) {
1278                                 __free_page(page);
1279                                 continue;
1280                         }
1281
1282                         memcpy(page_address(page), skb->data, skb->len);
1283                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1284                 } else {
1285                         nskb = skb_copy(skb, GFP_ATOMIC);
1286                         if (!nskb)
1287                                 continue;
1288                 }
1289
1290                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1291                         ack = true;
1292
1293                 rx_status.mactime = now + data2->tsf_offset;
1294
1295                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1296
1297                 mac80211_hwsim_add_vendor_rtap(nskb);
1298
1299                 data2->rx_pkts++;
1300                 data2->rx_bytes += nskb->len;
1301                 ieee80211_rx_irqsafe(data2->hw, nskb);
1302         }
1303         spin_unlock(&hwsim_radio_lock);
1304
1305         return ack;
1306 }
1307
1308 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1309                               struct ieee80211_tx_control *control,
1310                               struct sk_buff *skb)
1311 {
1312         struct mac80211_hwsim_data *data = hw->priv;
1313         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1314         struct ieee80211_hdr *hdr = (void *)skb->data;
1315         struct ieee80211_chanctx_conf *chanctx_conf;
1316         struct ieee80211_channel *channel;
1317         bool ack;
1318         u32 _portid;
1319
1320         if (WARN_ON(skb->len < 10)) {
1321                 /* Should not happen; just a sanity check for addr1 use */
1322                 ieee80211_free_txskb(hw, skb);
1323                 return;
1324         }
1325
1326         if (!data->use_chanctx) {
1327                 channel = data->channel;
1328         } else if (txi->hw_queue == 4) {
1329                 channel = data->tmp_chan;
1330         } else {
1331                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1332                 if (chanctx_conf)
1333                         channel = chanctx_conf->def.chan;
1334                 else
1335                         channel = NULL;
1336         }
1337
1338         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1339                 ieee80211_free_txskb(hw, skb);
1340                 return;
1341         }
1342
1343         if (data->idle && !data->tmp_chan) {
1344                 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
1345                 ieee80211_free_txskb(hw, skb);
1346                 return;
1347         }
1348
1349         if (txi->control.vif)
1350                 hwsim_check_magic(txi->control.vif);
1351         if (control->sta)
1352                 hwsim_check_sta_magic(control->sta);
1353
1354         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1355                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1356                                        txi->control.rates,
1357                                        ARRAY_SIZE(txi->control.rates));
1358
1359         txi->rate_driver_data[0] = channel;
1360
1361         if (skb->len >= 24 + 8 &&
1362             ieee80211_is_probe_resp(hdr->frame_control)) {
1363                 /* fake header transmission time */
1364                 struct ieee80211_mgmt *mgmt;
1365                 struct ieee80211_rate *txrate;
1366                 u64 ts;
1367
1368                 mgmt = (struct ieee80211_mgmt *)skb->data;
1369                 txrate = ieee80211_get_tx_rate(hw, txi);
1370                 ts = mac80211_hwsim_get_tsf_raw();
1371                 mgmt->u.probe_resp.timestamp =
1372                         cpu_to_le64(ts + data->tsf_offset +
1373                                     24 * 8 * 10 / txrate->bitrate);
1374         }
1375
1376         mac80211_hwsim_monitor_rx(hw, skb, channel);
1377
1378         /* wmediumd mode check */
1379         _portid = ACCESS_ONCE(data->wmediumd);
1380
1381         if (_portid)
1382                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1383
1384         /* NO wmediumd detected, perfect medium simulation */
1385         data->tx_pkts++;
1386         data->tx_bytes += skb->len;
1387         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1388
1389         if (ack && skb->len >= 16)
1390                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1391
1392         ieee80211_tx_info_clear_status(txi);
1393
1394         /* frame was transmitted at most favorable rate at first attempt */
1395         txi->control.rates[0].count = 1;
1396         txi->control.rates[1].idx = -1;
1397
1398         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1399                 txi->flags |= IEEE80211_TX_STAT_ACK;
1400         ieee80211_tx_status_irqsafe(hw, skb);
1401 }
1402
1403
1404 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1405 {
1406         struct mac80211_hwsim_data *data = hw->priv;
1407         wiphy_debug(hw->wiphy, "%s\n", __func__);
1408         data->started = true;
1409         return 0;
1410 }
1411
1412
1413 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1414 {
1415         struct mac80211_hwsim_data *data = hw->priv;
1416         data->started = false;
1417         tasklet_hrtimer_cancel(&data->beacon_timer);
1418         wiphy_debug(hw->wiphy, "%s\n", __func__);
1419 }
1420
1421
1422 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1423                                         struct ieee80211_vif *vif)
1424 {
1425         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1426                     __func__, ieee80211_vif_type_p2p(vif),
1427                     vif->addr);
1428         hwsim_set_magic(vif);
1429
1430         vif->cab_queue = 0;
1431         vif->hw_queue[IEEE80211_AC_VO] = 0;
1432         vif->hw_queue[IEEE80211_AC_VI] = 1;
1433         vif->hw_queue[IEEE80211_AC_BE] = 2;
1434         vif->hw_queue[IEEE80211_AC_BK] = 3;
1435
1436         return 0;
1437 }
1438
1439
1440 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1441                                            struct ieee80211_vif *vif,
1442                                            enum nl80211_iftype newtype,
1443                                            bool newp2p)
1444 {
1445         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1446         wiphy_debug(hw->wiphy,
1447                     "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1448                     __func__, ieee80211_vif_type_p2p(vif),
1449                     newtype, vif->addr);
1450         hwsim_check_magic(vif);
1451
1452         /*
1453          * interface may change from non-AP to AP in
1454          * which case this needs to be set up again
1455          */
1456         vif->cab_queue = 0;
1457
1458         return 0;
1459 }
1460
1461 static void mac80211_hwsim_remove_interface(
1462         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1463 {
1464         wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1465                     __func__, ieee80211_vif_type_p2p(vif),
1466                     vif->addr);
1467         hwsim_check_magic(vif);
1468         hwsim_clear_magic(vif);
1469 }
1470
1471 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1472                                     struct sk_buff *skb,
1473                                     struct ieee80211_channel *chan)
1474 {
1475         struct mac80211_hwsim_data *data = hw->priv;
1476         u32 _pid = ACCESS_ONCE(data->wmediumd);
1477
1478         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1479                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1480                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1481                                        txi->control.rates,
1482                                        ARRAY_SIZE(txi->control.rates));
1483         }
1484
1485         mac80211_hwsim_monitor_rx(hw, skb, chan);
1486
1487         if (_pid)
1488                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1489
1490         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1491         dev_kfree_skb(skb);
1492 }
1493
1494 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1495                                      struct ieee80211_vif *vif)
1496 {
1497         struct mac80211_hwsim_data *data = arg;
1498         struct ieee80211_hw *hw = data->hw;
1499         struct ieee80211_tx_info *info;
1500         struct ieee80211_rate *txrate;
1501         struct ieee80211_mgmt *mgmt;
1502         struct sk_buff *skb;
1503
1504         hwsim_check_magic(vif);
1505
1506         if (vif->type != NL80211_IFTYPE_AP &&
1507             vif->type != NL80211_IFTYPE_MESH_POINT &&
1508             vif->type != NL80211_IFTYPE_ADHOC)
1509                 return;
1510
1511         skb = ieee80211_beacon_get(hw, vif);
1512         if (skb == NULL)
1513                 return;
1514         info = IEEE80211_SKB_CB(skb);
1515         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1516                 ieee80211_get_tx_rates(vif, NULL, skb,
1517                                        info->control.rates,
1518                                        ARRAY_SIZE(info->control.rates));
1519
1520         txrate = ieee80211_get_tx_rate(hw, info);
1521
1522         mgmt = (struct ieee80211_mgmt *) skb->data;
1523         /* fake header transmission time */
1524         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1525         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1526                                                data->tsf_offset +
1527                                                24 * 8 * 10 / txrate->bitrate);
1528
1529         mac80211_hwsim_tx_frame(hw, skb,
1530                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1531
1532         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1533                 ieee80211_csa_finish(vif);
1534 }
1535
1536 static enum hrtimer_restart
1537 mac80211_hwsim_beacon(struct hrtimer *timer)
1538 {
1539         struct mac80211_hwsim_data *data =
1540                 container_of(timer, struct mac80211_hwsim_data,
1541                              beacon_timer.timer);
1542         struct ieee80211_hw *hw = data->hw;
1543         u64 bcn_int = data->beacon_int;
1544         ktime_t next_bcn;
1545
1546         if (!data->started)
1547                 goto out;
1548
1549         ieee80211_iterate_active_interfaces_atomic(
1550                 hw, IEEE80211_IFACE_ITER_NORMAL,
1551                 mac80211_hwsim_beacon_tx, data);
1552
1553         /* beacon at new TBTT + beacon interval */
1554         if (data->bcn_delta) {
1555                 bcn_int -= data->bcn_delta;
1556                 data->bcn_delta = 0;
1557         }
1558
1559         next_bcn = ktime_add(hrtimer_get_expires(timer),
1560                              ns_to_ktime(bcn_int * 1000));
1561         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1562 out:
1563         return HRTIMER_NORESTART;
1564 }
1565
1566 static const char * const hwsim_chanwidths[] = {
1567         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1568         [NL80211_CHAN_WIDTH_20] = "ht20",
1569         [NL80211_CHAN_WIDTH_40] = "ht40",
1570         [NL80211_CHAN_WIDTH_80] = "vht80",
1571         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1572         [NL80211_CHAN_WIDTH_160] = "vht160",
1573 };
1574
1575 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1576 {
1577         struct mac80211_hwsim_data *data = hw->priv;
1578         struct ieee80211_conf *conf = &hw->conf;
1579         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1580                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1581                 [IEEE80211_SMPS_OFF] = "off",
1582                 [IEEE80211_SMPS_STATIC] = "static",
1583                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1584         };
1585
1586         if (conf->chandef.chan)
1587                 wiphy_debug(hw->wiphy,
1588                             "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1589                             __func__,
1590                             conf->chandef.chan->center_freq,
1591                             conf->chandef.center_freq1,
1592                             conf->chandef.center_freq2,
1593                             hwsim_chanwidths[conf->chandef.width],
1594                             !!(conf->flags & IEEE80211_CONF_IDLE),
1595                             !!(conf->flags & IEEE80211_CONF_PS),
1596                             smps_modes[conf->smps_mode]);
1597         else
1598                 wiphy_debug(hw->wiphy,
1599                             "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1600                             __func__,
1601                             !!(conf->flags & IEEE80211_CONF_IDLE),
1602                             !!(conf->flags & IEEE80211_CONF_PS),
1603                             smps_modes[conf->smps_mode]);
1604
1605         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1606
1607         data->channel = conf->chandef.chan;
1608
1609         WARN_ON(data->channel && data->use_chanctx);
1610
1611         data->power_level = conf->power_level;
1612         if (!data->started || !data->beacon_int)
1613                 tasklet_hrtimer_cancel(&data->beacon_timer);
1614         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1615                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1616                 u32 bcn_int = data->beacon_int;
1617                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1618
1619                 tasklet_hrtimer_start(&data->beacon_timer,
1620                                       ns_to_ktime(until_tbtt * 1000),
1621                                       HRTIMER_MODE_REL);
1622         }
1623
1624         return 0;
1625 }
1626
1627
1628 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1629                                             unsigned int changed_flags,
1630                                             unsigned int *total_flags,u64 multicast)
1631 {
1632         struct mac80211_hwsim_data *data = hw->priv;
1633
1634         wiphy_debug(hw->wiphy, "%s\n", __func__);
1635
1636         data->rx_filter = 0;
1637         if (*total_flags & FIF_ALLMULTI)
1638                 data->rx_filter |= FIF_ALLMULTI;
1639
1640         *total_flags = data->rx_filter;
1641 }
1642
1643 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1644                                        struct ieee80211_vif *vif)
1645 {
1646         unsigned int *count = data;
1647         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1648
1649         if (vp->bcn_en)
1650                 (*count)++;
1651 }
1652
1653 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1654                                             struct ieee80211_vif *vif,
1655                                             struct ieee80211_bss_conf *info,
1656                                             u32 changed)
1657 {
1658         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1659         struct mac80211_hwsim_data *data = hw->priv;
1660
1661         hwsim_check_magic(vif);
1662
1663         wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1664                     __func__, changed, vif->addr);
1665
1666         if (changed & BSS_CHANGED_BSSID) {
1667                 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
1668                             __func__, info->bssid);
1669                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1670         }
1671
1672         if (changed & BSS_CHANGED_ASSOC) {
1673                 wiphy_debug(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1674                             info->assoc, info->aid);
1675                 vp->assoc = info->assoc;
1676                 vp->aid = info->aid;
1677         }
1678
1679         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1680                 wiphy_debug(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1681                             info->enable_beacon, info->beacon_int);
1682                 vp->bcn_en = info->enable_beacon;
1683                 if (data->started &&
1684                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1685                     info->enable_beacon) {
1686                         u64 tsf, until_tbtt;
1687                         u32 bcn_int;
1688                         data->beacon_int = info->beacon_int * 1024;
1689                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1690                         bcn_int = data->beacon_int;
1691                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1692                         tasklet_hrtimer_start(&data->beacon_timer,
1693                                               ns_to_ktime(until_tbtt * 1000),
1694                                               HRTIMER_MODE_REL);
1695                 } else if (!info->enable_beacon) {
1696                         unsigned int count = 0;
1697                         ieee80211_iterate_active_interfaces_atomic(
1698                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1699                                 mac80211_hwsim_bcn_en_iter, &count);
1700                         wiphy_debug(hw->wiphy, "  beaconing vifs remaining: %u",
1701                                     count);
1702                         if (count == 0) {
1703                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1704                                 data->beacon_int = 0;
1705                         }
1706                 }
1707         }
1708
1709         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1710                 wiphy_debug(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1711                             info->use_cts_prot);
1712         }
1713
1714         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1715                 wiphy_debug(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1716                             info->use_short_preamble);
1717         }
1718
1719         if (changed & BSS_CHANGED_ERP_SLOT) {
1720                 wiphy_debug(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1721         }
1722
1723         if (changed & BSS_CHANGED_HT) {
1724                 wiphy_debug(hw->wiphy, "  HT: op_mode=0x%x\n",
1725                             info->ht_operation_mode);
1726         }
1727
1728         if (changed & BSS_CHANGED_BASIC_RATES) {
1729                 wiphy_debug(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1730                             (unsigned long long) info->basic_rates);
1731         }
1732
1733         if (changed & BSS_CHANGED_TXPOWER)
1734                 wiphy_debug(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1735 }
1736
1737 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1738                                   struct ieee80211_vif *vif,
1739                                   struct ieee80211_sta *sta)
1740 {
1741         hwsim_check_magic(vif);
1742         hwsim_set_sta_magic(sta);
1743
1744         return 0;
1745 }
1746
1747 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1748                                      struct ieee80211_vif *vif,
1749                                      struct ieee80211_sta *sta)
1750 {
1751         hwsim_check_magic(vif);
1752         hwsim_clear_sta_magic(sta);
1753
1754         return 0;
1755 }
1756
1757 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1758                                       struct ieee80211_vif *vif,
1759                                       enum sta_notify_cmd cmd,
1760                                       struct ieee80211_sta *sta)
1761 {
1762         hwsim_check_magic(vif);
1763
1764         switch (cmd) {
1765         case STA_NOTIFY_SLEEP:
1766         case STA_NOTIFY_AWAKE:
1767                 /* TODO: make good use of these flags */
1768                 break;
1769         default:
1770                 WARN(1, "Invalid sta notify: %d\n", cmd);
1771                 break;
1772         }
1773 }
1774
1775 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1776                                   struct ieee80211_sta *sta,
1777                                   bool set)
1778 {
1779         hwsim_check_sta_magic(sta);
1780         return 0;
1781 }
1782
1783 static int mac80211_hwsim_conf_tx(
1784         struct ieee80211_hw *hw,
1785         struct ieee80211_vif *vif, u16 queue,
1786         const struct ieee80211_tx_queue_params *params)
1787 {
1788         wiphy_debug(hw->wiphy,
1789                     "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1790                     __func__, queue,
1791                     params->txop, params->cw_min,
1792                     params->cw_max, params->aifs);
1793         return 0;
1794 }
1795
1796 static int mac80211_hwsim_get_survey(
1797         struct ieee80211_hw *hw, int idx,
1798         struct survey_info *survey)
1799 {
1800         struct ieee80211_conf *conf = &hw->conf;
1801
1802         wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1803
1804         if (idx != 0)
1805                 return -ENOENT;
1806
1807         /* Current channel */
1808         survey->channel = conf->chandef.chan;
1809
1810         /*
1811          * Magically conjured noise level --- this is only ok for simulated hardware.
1812          *
1813          * A real driver which cannot determine the real channel noise MUST NOT
1814          * report any noise, especially not a magically conjured one :-)
1815          */
1816         survey->filled = SURVEY_INFO_NOISE_DBM;
1817         survey->noise = -92;
1818
1819         return 0;
1820 }
1821
1822 #ifdef CONFIG_NL80211_TESTMODE
1823 /*
1824  * This section contains example code for using netlink
1825  * attributes with the testmode command in nl80211.
1826  */
1827
1828 /* These enums need to be kept in sync with userspace */
1829 enum hwsim_testmode_attr {
1830         __HWSIM_TM_ATTR_INVALID = 0,
1831         HWSIM_TM_ATTR_CMD       = 1,
1832         HWSIM_TM_ATTR_PS        = 2,
1833
1834         /* keep last */
1835         __HWSIM_TM_ATTR_AFTER_LAST,
1836         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1837 };
1838
1839 enum hwsim_testmode_cmd {
1840         HWSIM_TM_CMD_SET_PS             = 0,
1841         HWSIM_TM_CMD_GET_PS             = 1,
1842         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1843         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1844 };
1845
1846 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1847         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1848         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1849 };
1850
1851 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1852                                        struct ieee80211_vif *vif,
1853                                        void *data, int len)
1854 {
1855         struct mac80211_hwsim_data *hwsim = hw->priv;
1856         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1857         struct sk_buff *skb;
1858         int err, ps;
1859
1860         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1861                         hwsim_testmode_policy);
1862         if (err)
1863                 return err;
1864
1865         if (!tb[HWSIM_TM_ATTR_CMD])
1866                 return -EINVAL;
1867
1868         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1869         case HWSIM_TM_CMD_SET_PS:
1870                 if (!tb[HWSIM_TM_ATTR_PS])
1871                         return -EINVAL;
1872                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1873                 return hwsim_fops_ps_write(hwsim, ps);
1874         case HWSIM_TM_CMD_GET_PS:
1875                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1876                                                 nla_total_size(sizeof(u32)));
1877                 if (!skb)
1878                         return -ENOMEM;
1879                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1880                         goto nla_put_failure;
1881                 return cfg80211_testmode_reply(skb);
1882         case HWSIM_TM_CMD_STOP_QUEUES:
1883                 ieee80211_stop_queues(hw);
1884                 return 0;
1885         case HWSIM_TM_CMD_WAKE_QUEUES:
1886                 ieee80211_wake_queues(hw);
1887                 return 0;
1888         default:
1889                 return -EOPNOTSUPP;
1890         }
1891
1892  nla_put_failure:
1893         kfree_skb(skb);
1894         return -ENOBUFS;
1895 }
1896 #endif
1897
1898 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1899                                        struct ieee80211_vif *vif,
1900                                        struct ieee80211_ampdu_params *params)
1901 {
1902         struct ieee80211_sta *sta = params->sta;
1903         enum ieee80211_ampdu_mlme_action action = params->action;
1904         u16 tid = params->tid;
1905
1906         switch (action) {
1907         case IEEE80211_AMPDU_TX_START:
1908                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1909                 break;
1910         case IEEE80211_AMPDU_TX_STOP_CONT:
1911         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1912         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1913                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1914                 break;
1915         case IEEE80211_AMPDU_TX_OPERATIONAL:
1916                 break;
1917         case IEEE80211_AMPDU_RX_START:
1918         case IEEE80211_AMPDU_RX_STOP:
1919                 break;
1920         default:
1921                 return -EOPNOTSUPP;
1922         }
1923
1924         return 0;
1925 }
1926
1927 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
1928                                  struct ieee80211_vif *vif,
1929                                  u32 queues, bool drop)
1930 {
1931         /* Not implemented, queues only on kernel side */
1932 }
1933
1934 static void hw_scan_work(struct work_struct *work)
1935 {
1936         struct mac80211_hwsim_data *hwsim =
1937                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
1938         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
1939         int dwell, i;
1940
1941         mutex_lock(&hwsim->mutex);
1942         if (hwsim->scan_chan_idx >= req->n_channels) {
1943                 struct cfg80211_scan_info info = {
1944                         .aborted = false,
1945                 };
1946
1947                 wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
1948                 ieee80211_scan_completed(hwsim->hw, &info);
1949                 hwsim->hw_scan_request = NULL;
1950                 hwsim->hw_scan_vif = NULL;
1951                 hwsim->tmp_chan = NULL;
1952                 mutex_unlock(&hwsim->mutex);
1953                 return;
1954         }
1955
1956         wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
1957                     req->channels[hwsim->scan_chan_idx]->center_freq);
1958
1959         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
1960         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
1961                                       IEEE80211_CHAN_RADAR) ||
1962             !req->n_ssids) {
1963                 dwell = 120;
1964         } else {
1965                 dwell = 30;
1966                 /* send probes */
1967                 for (i = 0; i < req->n_ssids; i++) {
1968                         struct sk_buff *probe;
1969                         struct ieee80211_mgmt *mgmt;
1970
1971                         probe = ieee80211_probereq_get(hwsim->hw,
1972                                                        hwsim->scan_addr,
1973                                                        req->ssids[i].ssid,
1974                                                        req->ssids[i].ssid_len,
1975                                                        req->ie_len);
1976                         if (!probe)
1977                                 continue;
1978
1979                         mgmt = (struct ieee80211_mgmt *) probe->data;
1980                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
1981                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
1982
1983                         if (req->ie_len)
1984                                 memcpy(skb_put(probe, req->ie_len), req->ie,
1985                                        req->ie_len);
1986
1987                         local_bh_disable();
1988                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
1989                                                 hwsim->tmp_chan);
1990                         local_bh_enable();
1991                 }
1992         }
1993         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
1994                                      msecs_to_jiffies(dwell));
1995         hwsim->scan_chan_idx++;
1996         mutex_unlock(&hwsim->mutex);
1997 }
1998
1999 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2000                                   struct ieee80211_vif *vif,
2001                                   struct ieee80211_scan_request *hw_req)
2002 {
2003         struct mac80211_hwsim_data *hwsim = hw->priv;
2004         struct cfg80211_scan_request *req = &hw_req->req;
2005
2006         mutex_lock(&hwsim->mutex);
2007         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2008                 mutex_unlock(&hwsim->mutex);
2009                 return -EBUSY;
2010         }
2011         hwsim->hw_scan_request = req;
2012         hwsim->hw_scan_vif = vif;
2013         hwsim->scan_chan_idx = 0;
2014         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2015                 get_random_mask_addr(hwsim->scan_addr,
2016                                      hw_req->req.mac_addr,
2017                                      hw_req->req.mac_addr_mask);
2018         else
2019                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2020         mutex_unlock(&hwsim->mutex);
2021
2022         wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
2023
2024         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2025
2026         return 0;
2027 }
2028
2029 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2030                                           struct ieee80211_vif *vif)
2031 {
2032         struct mac80211_hwsim_data *hwsim = hw->priv;
2033         struct cfg80211_scan_info info = {
2034                 .aborted = true,
2035         };
2036
2037         wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
2038
2039         cancel_delayed_work_sync(&hwsim->hw_scan);
2040
2041         mutex_lock(&hwsim->mutex);
2042         ieee80211_scan_completed(hwsim->hw, &info);
2043         hwsim->tmp_chan = NULL;
2044         hwsim->hw_scan_request = NULL;
2045         hwsim->hw_scan_vif = NULL;
2046         mutex_unlock(&hwsim->mutex);
2047 }
2048
2049 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2050                                    struct ieee80211_vif *vif,
2051                                    const u8 *mac_addr)
2052 {
2053         struct mac80211_hwsim_data *hwsim = hw->priv;
2054
2055         mutex_lock(&hwsim->mutex);
2056
2057         if (hwsim->scanning) {
2058                 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
2059                 goto out;
2060         }
2061
2062         printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
2063
2064         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2065         hwsim->scanning = true;
2066
2067 out:
2068         mutex_unlock(&hwsim->mutex);
2069 }
2070
2071 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2072                                             struct ieee80211_vif *vif)
2073 {
2074         struct mac80211_hwsim_data *hwsim = hw->priv;
2075
2076         mutex_lock(&hwsim->mutex);
2077
2078         printk(KERN_DEBUG "hwsim sw_scan_complete\n");
2079         hwsim->scanning = false;
2080         eth_zero_addr(hwsim->scan_addr);
2081
2082         mutex_unlock(&hwsim->mutex);
2083 }
2084
2085 static void hw_roc_start(struct work_struct *work)
2086 {
2087         struct mac80211_hwsim_data *hwsim =
2088                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2089
2090         mutex_lock(&hwsim->mutex);
2091
2092         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n");
2093         hwsim->tmp_chan = hwsim->roc_chan;
2094         ieee80211_ready_on_channel(hwsim->hw);
2095
2096         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2097                                      msecs_to_jiffies(hwsim->roc_duration));
2098
2099         mutex_unlock(&hwsim->mutex);
2100 }
2101
2102 static void hw_roc_done(struct work_struct *work)
2103 {
2104         struct mac80211_hwsim_data *hwsim =
2105                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2106
2107         mutex_lock(&hwsim->mutex);
2108         ieee80211_remain_on_channel_expired(hwsim->hw);
2109         hwsim->tmp_chan = NULL;
2110         mutex_unlock(&hwsim->mutex);
2111
2112         wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
2113 }
2114
2115 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2116                               struct ieee80211_vif *vif,
2117                               struct ieee80211_channel *chan,
2118                               int duration,
2119                               enum ieee80211_roc_type type)
2120 {
2121         struct mac80211_hwsim_data *hwsim = hw->priv;
2122
2123         mutex_lock(&hwsim->mutex);
2124         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2125                 mutex_unlock(&hwsim->mutex);
2126                 return -EBUSY;
2127         }
2128
2129         hwsim->roc_chan = chan;
2130         hwsim->roc_duration = duration;
2131         mutex_unlock(&hwsim->mutex);
2132
2133         wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2134                     chan->center_freq, duration);
2135         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2136
2137         return 0;
2138 }
2139
2140 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2141 {
2142         struct mac80211_hwsim_data *hwsim = hw->priv;
2143
2144         cancel_delayed_work_sync(&hwsim->roc_start);
2145         cancel_delayed_work_sync(&hwsim->roc_done);
2146
2147         mutex_lock(&hwsim->mutex);
2148         hwsim->tmp_chan = NULL;
2149         mutex_unlock(&hwsim->mutex);
2150
2151         wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
2152
2153         return 0;
2154 }
2155
2156 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2157                                       struct ieee80211_chanctx_conf *ctx)
2158 {
2159         hwsim_set_chanctx_magic(ctx);
2160         wiphy_debug(hw->wiphy,
2161                     "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2162                     ctx->def.chan->center_freq, ctx->def.width,
2163                     ctx->def.center_freq1, ctx->def.center_freq2);
2164         return 0;
2165 }
2166
2167 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2168                                           struct ieee80211_chanctx_conf *ctx)
2169 {
2170         wiphy_debug(hw->wiphy,
2171                     "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2172                     ctx->def.chan->center_freq, ctx->def.width,
2173                     ctx->def.center_freq1, ctx->def.center_freq2);
2174         hwsim_check_chanctx_magic(ctx);
2175         hwsim_clear_chanctx_magic(ctx);
2176 }
2177
2178 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2179                                           struct ieee80211_chanctx_conf *ctx,
2180                                           u32 changed)
2181 {
2182         hwsim_check_chanctx_magic(ctx);
2183         wiphy_debug(hw->wiphy,
2184                     "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2185                     ctx->def.chan->center_freq, ctx->def.width,
2186                     ctx->def.center_freq1, ctx->def.center_freq2);
2187 }
2188
2189 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2190                                              struct ieee80211_vif *vif,
2191                                              struct ieee80211_chanctx_conf *ctx)
2192 {
2193         hwsim_check_magic(vif);
2194         hwsim_check_chanctx_magic(ctx);
2195
2196         return 0;
2197 }
2198
2199 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2200                                                 struct ieee80211_vif *vif,
2201                                                 struct ieee80211_chanctx_conf *ctx)
2202 {
2203         hwsim_check_magic(vif);
2204         hwsim_check_chanctx_magic(ctx);
2205 }
2206
2207 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2208         "tx_pkts_nic",
2209         "tx_bytes_nic",
2210         "rx_pkts_nic",
2211         "rx_bytes_nic",
2212         "d_tx_dropped",
2213         "d_tx_failed",
2214         "d_ps_mode",
2215         "d_group",
2216         "d_tx_power",
2217 };
2218
2219 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2220
2221 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2222                                           struct ieee80211_vif *vif,
2223                                           u32 sset, u8 *data)
2224 {
2225         if (sset == ETH_SS_STATS)
2226                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2227                        sizeof(mac80211_hwsim_gstrings_stats));
2228 }
2229
2230 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2231                                             struct ieee80211_vif *vif, int sset)
2232 {
2233         if (sset == ETH_SS_STATS)
2234                 return MAC80211_HWSIM_SSTATS_LEN;
2235         return 0;
2236 }
2237
2238 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2239                                         struct ieee80211_vif *vif,
2240                                         struct ethtool_stats *stats, u64 *data)
2241 {
2242         struct mac80211_hwsim_data *ar = hw->priv;
2243         int i = 0;
2244
2245         data[i++] = ar->tx_pkts;
2246         data[i++] = ar->tx_bytes;
2247         data[i++] = ar->rx_pkts;
2248         data[i++] = ar->rx_bytes;
2249         data[i++] = ar->tx_dropped;
2250         data[i++] = ar->tx_failed;
2251         data[i++] = ar->ps;
2252         data[i++] = ar->group;
2253         data[i++] = ar->power_level;
2254
2255         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2256 }
2257
2258 static const struct ieee80211_ops mac80211_hwsim_ops = {
2259         .tx = mac80211_hwsim_tx,
2260         .start = mac80211_hwsim_start,
2261         .stop = mac80211_hwsim_stop,
2262         .add_interface = mac80211_hwsim_add_interface,
2263         .change_interface = mac80211_hwsim_change_interface,
2264         .remove_interface = mac80211_hwsim_remove_interface,
2265         .config = mac80211_hwsim_config,
2266         .configure_filter = mac80211_hwsim_configure_filter,
2267         .bss_info_changed = mac80211_hwsim_bss_info_changed,
2268         .sta_add = mac80211_hwsim_sta_add,
2269         .sta_remove = mac80211_hwsim_sta_remove,
2270         .sta_notify = mac80211_hwsim_sta_notify,
2271         .set_tim = mac80211_hwsim_set_tim,
2272         .conf_tx = mac80211_hwsim_conf_tx,
2273         .get_survey = mac80211_hwsim_get_survey,
2274         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
2275         .ampdu_action = mac80211_hwsim_ampdu_action,
2276         .sw_scan_start = mac80211_hwsim_sw_scan,
2277         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2278         .flush = mac80211_hwsim_flush,
2279         .get_tsf = mac80211_hwsim_get_tsf,
2280         .set_tsf = mac80211_hwsim_set_tsf,
2281         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,
2282         .get_et_stats = mac80211_hwsim_get_et_stats,
2283         .get_et_strings = mac80211_hwsim_get_et_strings,
2284 };
2285
2286 static struct ieee80211_ops mac80211_hwsim_mchan_ops;
2287
2288 struct hwsim_new_radio_params {
2289         unsigned int channels;
2290         const char *reg_alpha2;
2291         const struct ieee80211_regdomain *regd;
2292         bool reg_strict;
2293         bool p2p_device;
2294         bool use_chanctx;
2295         bool destroy_on_close;
2296         const char *hwname;
2297         bool no_vif;
2298 };
2299
2300 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2301                                    struct genl_info *info)
2302 {
2303         if (info)
2304                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2305                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2306         else
2307                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2308                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2309 }
2310
2311 static int append_radio_msg(struct sk_buff *skb, int id,
2312                             struct hwsim_new_radio_params *param)
2313 {
2314         int ret;
2315
2316         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2317         if (ret < 0)
2318                 return ret;
2319
2320         if (param->channels) {
2321                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2322                 if (ret < 0)
2323                         return ret;
2324         }
2325
2326         if (param->reg_alpha2) {
2327                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2328                               param->reg_alpha2);
2329                 if (ret < 0)
2330                         return ret;
2331         }
2332
2333         if (param->regd) {
2334                 int i;
2335
2336                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2337                         if (hwsim_world_regdom_custom[i] != param->regd)
2338                                 continue;
2339
2340                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2341                         if (ret < 0)
2342                                 return ret;
2343                         break;
2344                 }
2345         }
2346
2347         if (param->reg_strict) {
2348                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2349                 if (ret < 0)
2350                         return ret;
2351         }
2352
2353         if (param->p2p_device) {
2354                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2355                 if (ret < 0)
2356                         return ret;
2357         }
2358
2359         if (param->use_chanctx) {
2360                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2361                 if (ret < 0)
2362                         return ret;
2363         }
2364
2365         if (param->hwname) {
2366                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2367                               strlen(param->hwname), param->hwname);
2368                 if (ret < 0)
2369                         return ret;
2370         }
2371
2372         return 0;
2373 }
2374
2375 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2376                                   struct hwsim_new_radio_params *param)
2377 {
2378         struct sk_buff *mcast_skb;
2379         void *data;
2380
2381         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2382         if (!mcast_skb)
2383                 return;
2384
2385         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2386                            HWSIM_CMD_NEW_RADIO);
2387         if (!data)
2388                 goto out_err;
2389
2390         if (append_radio_msg(mcast_skb, id, param) < 0)
2391                 goto out_err;
2392
2393         genlmsg_end(mcast_skb, data);
2394
2395         hwsim_mcast_config_msg(mcast_skb, info);
2396         return;
2397
2398 out_err:
2399         genlmsg_cancel(mcast_skb, data);
2400         nlmsg_free(mcast_skb);
2401 }
2402
2403 static int mac80211_hwsim_new_radio(struct genl_info *info,
2404                                     struct hwsim_new_radio_params *param)
2405 {
2406         int err;
2407         u8 addr[ETH_ALEN];
2408         struct mac80211_hwsim_data *data;
2409         struct ieee80211_hw *hw;
2410         enum nl80211_band band;
2411         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2412         struct net *net;
2413         int idx;
2414
2415         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2416                 return -EINVAL;
2417
2418         spin_lock_bh(&hwsim_radio_lock);
2419         idx = hwsim_radio_idx++;
2420         spin_unlock_bh(&hwsim_radio_lock);
2421
2422         if (param->use_chanctx)
2423                 ops = &mac80211_hwsim_mchan_ops;
2424         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2425         if (!hw) {
2426                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
2427                 err = -ENOMEM;
2428                 goto failed;
2429         }
2430
2431         if (info)
2432                 net = genl_info_net(info);
2433         else
2434                 net = &init_net;
2435         wiphy_net_set(hw->wiphy, net);
2436
2437         data = hw->priv;
2438         data->hw = hw;
2439
2440         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2441         if (IS_ERR(data->dev)) {
2442                 printk(KERN_DEBUG
2443                        "mac80211_hwsim: device_create failed (%ld)\n",
2444                        PTR_ERR(data->dev));
2445                 err = -ENOMEM;
2446                 goto failed_drvdata;
2447         }
2448         data->dev->driver = &mac80211_hwsim_driver.driver;
2449         err = device_bind_driver(data->dev);
2450         if (err != 0) {
2451                 printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
2452                        err);
2453                 goto failed_bind;
2454         }
2455
2456         skb_queue_head_init(&data->pending);
2457
2458         SET_IEEE80211_DEV(hw, data->dev);
2459         eth_zero_addr(addr);
2460         addr[0] = 0x02;
2461         addr[3] = idx >> 8;
2462         addr[4] = idx;
2463         memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2464         memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2465         data->addresses[1].addr[0] |= 0x40;
2466         hw->wiphy->n_addresses = 2;
2467         hw->wiphy->addresses = data->addresses;
2468
2469         data->channels = param->channels;
2470         data->use_chanctx = param->use_chanctx;
2471         data->idx = idx;
2472         data->destroy_on_close = param->destroy_on_close;
2473         if (info)
2474                 data->portid = info->snd_portid;
2475
2476         if (data->use_chanctx) {
2477                 hw->wiphy->max_scan_ssids = 255;
2478                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2479                 hw->wiphy->max_remain_on_channel_duration = 1000;
2480                 hw->wiphy->iface_combinations = &data->if_combination;
2481                 if (param->p2p_device)
2482                         data->if_combination = hwsim_if_comb_p2p_dev[0];
2483                 else
2484                         data->if_combination = hwsim_if_comb[0];
2485                 hw->wiphy->n_iface_combinations = 1;
2486                 /* For channels > 1 DFS is not allowed */
2487                 data->if_combination.radar_detect_widths = 0;
2488                 data->if_combination.num_different_channels = data->channels;
2489         } else if (param->p2p_device) {
2490                 hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
2491                 hw->wiphy->n_iface_combinations =
2492                         ARRAY_SIZE(hwsim_if_comb_p2p_dev);
2493         } else {
2494                 hw->wiphy->iface_combinations = hwsim_if_comb;
2495                 hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
2496         }
2497
2498         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2499         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2500         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2501
2502         hw->queues = 5;
2503         hw->offchannel_tx_hw_queue = 4;
2504         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2505                                      BIT(NL80211_IFTYPE_AP) |
2506                                      BIT(NL80211_IFTYPE_P2P_CLIENT) |
2507                                      BIT(NL80211_IFTYPE_P2P_GO) |
2508                                      BIT(NL80211_IFTYPE_ADHOC) |
2509                                      BIT(NL80211_IFTYPE_MESH_POINT);
2510
2511         if (param->p2p_device)
2512                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
2513
2514         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2515         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2516         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2517         ieee80211_hw_set(hw, QUEUE_CONTROL);
2518         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2519         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2520         ieee80211_hw_set(hw, MFP_CAPABLE);
2521         ieee80211_hw_set(hw, SIGNAL_DBM);
2522         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2523         if (rctbl)
2524                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2525
2526         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2527                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2528                             WIPHY_FLAG_AP_UAPSD |
2529                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2530         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2531                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2532                                NL80211_FEATURE_STATIC_SMPS |
2533                                NL80211_FEATURE_DYNAMIC_SMPS |
2534                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2535         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2536
2537         /* ask mac80211 to reserve space for magic */
2538         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2539         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2540         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2541
2542         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2543                 sizeof(hwsim_channels_2ghz));
2544         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2545                 sizeof(hwsim_channels_5ghz));
2546         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2547
2548         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2549                 struct ieee80211_supported_band *sband = &data->bands[band];
2550                 switch (band) {
2551                 case NL80211_BAND_2GHZ:
2552                         sband->channels = data->channels_2ghz;
2553                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2554                         sband->bitrates = data->rates;
2555                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2556                         break;
2557                 case NL80211_BAND_5GHZ:
2558                         sband->channels = data->channels_5ghz;
2559                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2560                         sband->bitrates = data->rates + 4;
2561                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2562
2563                         sband->vht_cap.vht_supported = true;
2564                         sband->vht_cap.cap =
2565                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2566                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2567                                 IEEE80211_VHT_CAP_RXLDPC |
2568                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2569                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2570                                 IEEE80211_VHT_CAP_TXSTBC |
2571                                 IEEE80211_VHT_CAP_RXSTBC_1 |
2572                                 IEEE80211_VHT_CAP_RXSTBC_2 |
2573                                 IEEE80211_VHT_CAP_RXSTBC_3 |
2574                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2575                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2576                         sband->vht_cap.vht_mcs.rx_mcs_map =
2577                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2578                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2579                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2580                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2581                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2582                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2583                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2584                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2585                         sband->vht_cap.vht_mcs.tx_mcs_map =
2586                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2587                         break;
2588                 default:
2589                         continue;
2590                 }
2591
2592                 sband->ht_cap.ht_supported = true;
2593                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2594                                     IEEE80211_HT_CAP_GRN_FLD |
2595                                     IEEE80211_HT_CAP_SGI_20 |
2596                                     IEEE80211_HT_CAP_SGI_40 |
2597                                     IEEE80211_HT_CAP_DSSSCCK40;
2598                 sband->ht_cap.ampdu_factor = 0x3;
2599                 sband->ht_cap.ampdu_density = 0x6;
2600                 memset(&sband->ht_cap.mcs, 0,
2601                        sizeof(sband->ht_cap.mcs));
2602                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2603                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2604                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2605
2606                 hw->wiphy->bands[band] = sband;
2607         }
2608
2609         /* By default all radios belong to the first group */
2610         data->group = 1;
2611         mutex_init(&data->mutex);
2612
2613         data->netgroup = hwsim_net_get_netgroup(net);
2614
2615         /* Enable frame retransmissions for lossy channels */
2616         hw->max_rates = 4;
2617         hw->max_rate_tries = 11;
2618
2619         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2620         hw->wiphy->n_vendor_commands =
2621                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2622         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2623         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2624
2625         if (param->reg_strict)
2626                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2627         if (param->regd) {
2628                 data->regd = param->regd;
2629                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2630                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2631                 /* give the regulatory workqueue a chance to run */
2632                 schedule_timeout_interruptible(1);
2633         }
2634
2635         if (param->no_vif)
2636                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2637
2638         err = ieee80211_register_hw(hw);
2639         if (err < 0) {
2640                 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2641                        err);
2642                 goto failed_hw;
2643         }
2644
2645         wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2646
2647         if (param->reg_alpha2) {
2648                 data->alpha2[0] = param->reg_alpha2[0];
2649                 data->alpha2[1] = param->reg_alpha2[1];
2650                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2651         }
2652
2653         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2654         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2655         debugfs_create_file("group", 0666, data->debugfs, data,
2656                             &hwsim_fops_group);
2657         if (!data->use_chanctx)
2658                 debugfs_create_file("dfs_simulate_radar", 0222,
2659                                     data->debugfs,
2660                                     data, &hwsim_simulate_radar);
2661
2662         tasklet_hrtimer_init(&data->beacon_timer,
2663                              mac80211_hwsim_beacon,
2664                              CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
2665
2666         spin_lock_bh(&hwsim_radio_lock);
2667         list_add_tail(&data->list, &hwsim_radios);
2668         spin_unlock_bh(&hwsim_radio_lock);
2669
2670         if (idx > 0)
2671                 hwsim_mcast_new_radio(idx, info, param);
2672
2673         return idx;
2674
2675 failed_hw:
2676         device_release_driver(data->dev);
2677 failed_bind:
2678         device_unregister(data->dev);
2679 failed_drvdata:
2680         ieee80211_free_hw(hw);
2681 failed:
2682         return err;
2683 }
2684
2685 static void hwsim_mcast_del_radio(int id, const char *hwname,
2686                                   struct genl_info *info)
2687 {
2688         struct sk_buff *skb;
2689         void *data;
2690         int ret;
2691
2692         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2693         if (!skb)
2694                 return;
2695
2696         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2697                            HWSIM_CMD_DEL_RADIO);
2698         if (!data)
2699                 goto error;
2700
2701         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2702         if (ret < 0)
2703                 goto error;
2704
2705         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
2706                       hwname);
2707         if (ret < 0)
2708                 goto error;
2709
2710         genlmsg_end(skb, data);
2711
2712         hwsim_mcast_config_msg(skb, info);
2713
2714         return;
2715
2716 error:
2717         nlmsg_free(skb);
2718 }
2719
2720 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
2721                                      const char *hwname,
2722                                      struct genl_info *info)
2723 {
2724         hwsim_mcast_del_radio(data->idx, hwname, info);
2725         debugfs_remove_recursive(data->debugfs);
2726         ieee80211_unregister_hw(data->hw);
2727         device_release_driver(data->dev);
2728         device_unregister(data->dev);
2729         ieee80211_free_hw(data->hw);
2730 }
2731
2732 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
2733                                     struct mac80211_hwsim_data *data,
2734                                     u32 portid, u32 seq,
2735                                     struct netlink_callback *cb, int flags)
2736 {
2737         void *hdr;
2738         struct hwsim_new_radio_params param = { };
2739         int res = -EMSGSIZE;
2740
2741         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
2742                           HWSIM_CMD_GET_RADIO);
2743         if (!hdr)
2744                 return -EMSGSIZE;
2745
2746         if (cb)
2747                 genl_dump_check_consistent(cb, hdr, &hwsim_genl_family);
2748
2749         if (data->alpha2[0] && data->alpha2[1])
2750                 param.reg_alpha2 = data->alpha2;
2751
2752         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
2753                                         REGULATORY_STRICT_REG);
2754         param.p2p_device = !!(data->hw->wiphy->interface_modes &
2755                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
2756         param.use_chanctx = data->use_chanctx;
2757         param.regd = data->regd;
2758         param.channels = data->channels;
2759         param.hwname = wiphy_name(data->hw->wiphy);
2760
2761         res = append_radio_msg(skb, data->idx, &param);
2762         if (res < 0)
2763                 goto out_err;
2764
2765         genlmsg_end(skb, hdr);
2766         return 0;
2767
2768 out_err:
2769         genlmsg_cancel(skb, hdr);
2770         return res;
2771 }
2772
2773 static void mac80211_hwsim_free(void)
2774 {
2775         struct mac80211_hwsim_data *data;
2776
2777         spin_lock_bh(&hwsim_radio_lock);
2778         while ((data = list_first_entry_or_null(&hwsim_radios,
2779                                                 struct mac80211_hwsim_data,
2780                                                 list))) {
2781                 list_del(&data->list);
2782                 spin_unlock_bh(&hwsim_radio_lock);
2783                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
2784                                          NULL);
2785                 spin_lock_bh(&hwsim_radio_lock);
2786         }
2787         spin_unlock_bh(&hwsim_radio_lock);
2788         class_destroy(hwsim_class);
2789 }
2790
2791 static const struct net_device_ops hwsim_netdev_ops = {
2792         .ndo_start_xmit         = hwsim_mon_xmit,
2793         .ndo_set_mac_address    = eth_mac_addr,
2794         .ndo_validate_addr      = eth_validate_addr,
2795 };
2796
2797 static void hwsim_mon_setup(struct net_device *dev)
2798 {
2799         dev->netdev_ops = &hwsim_netdev_ops;
2800         dev->destructor = free_netdev;
2801         ether_setup(dev);
2802         dev->priv_flags |= IFF_NO_QUEUE;
2803         dev->type = ARPHRD_IEEE80211_RADIOTAP;
2804         eth_zero_addr(dev->dev_addr);
2805         dev->dev_addr[0] = 0x12;
2806 }
2807
2808 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
2809 {
2810         struct mac80211_hwsim_data *data;
2811         bool _found = false;
2812
2813         spin_lock_bh(&hwsim_radio_lock);
2814         list_for_each_entry(data, &hwsim_radios, list) {
2815                 if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
2816                         _found = true;
2817                         break;
2818                 }
2819         }
2820         spin_unlock_bh(&hwsim_radio_lock);
2821
2822         if (!_found)
2823                 return NULL;
2824
2825         return data;
2826 }
2827
2828 static void hwsim_register_wmediumd(struct net *net, u32 portid)
2829 {
2830         struct mac80211_hwsim_data *data;
2831
2832         hwsim_net_set_wmediumd(net, portid);
2833
2834         spin_lock_bh(&hwsim_radio_lock);
2835         list_for_each_entry(data, &hwsim_radios, list) {
2836                 if (data->netgroup == hwsim_net_get_netgroup(net))
2837                         data->wmediumd = portid;
2838         }
2839         spin_unlock_bh(&hwsim_radio_lock);
2840 }
2841
2842 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
2843                                            struct genl_info *info)
2844 {
2845
2846         struct ieee80211_hdr *hdr;
2847         struct mac80211_hwsim_data *data2;
2848         struct ieee80211_tx_info *txi;
2849         struct hwsim_tx_rate *tx_attempts;
2850         u64 ret_skb_cookie;
2851         struct sk_buff *skb, *tmp;
2852         const u8 *src;
2853         unsigned int hwsim_flags;
2854         int i;
2855         bool found = false;
2856
2857         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
2858             !info->attrs[HWSIM_ATTR_FLAGS] ||
2859             !info->attrs[HWSIM_ATTR_COOKIE] ||
2860             !info->attrs[HWSIM_ATTR_SIGNAL] ||
2861             !info->attrs[HWSIM_ATTR_TX_INFO])
2862                 goto out;
2863
2864         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
2865         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
2866         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
2867
2868         data2 = get_hwsim_data_ref_from_addr(src);
2869         if (!data2)
2870                 goto out;
2871
2872         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2873                 goto out;
2874
2875         if (info->snd_portid != data2->wmediumd)
2876                 goto out;
2877
2878         /* look for the skb matching the cookie passed back from user */
2879         skb_queue_walk_safe(&data2->pending, skb, tmp) {
2880                 u64 skb_cookie;
2881
2882                 txi = IEEE80211_SKB_CB(skb);
2883                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
2884
2885                 if (skb_cookie == ret_skb_cookie) {
2886                         skb_unlink(skb, &data2->pending);
2887                         found = true;
2888                         break;
2889                 }
2890         }
2891
2892         /* not found */
2893         if (!found)
2894                 goto out;
2895
2896         /* Tx info received because the frame was broadcasted on user space,
2897          so we get all the necessary info: tx attempts and skb control buff */
2898
2899         tx_attempts = (struct hwsim_tx_rate *)nla_data(
2900                        info->attrs[HWSIM_ATTR_TX_INFO]);
2901
2902         /* now send back TX status */
2903         txi = IEEE80211_SKB_CB(skb);
2904
2905         ieee80211_tx_info_clear_status(txi);
2906
2907         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
2908                 txi->status.rates[i].idx = tx_attempts[i].idx;
2909                 txi->status.rates[i].count = tx_attempts[i].count;
2910                 /*txi->status.rates[i].flags = 0;*/
2911         }
2912
2913         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
2914
2915         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
2916            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
2917                 if (skb->len >= 16) {
2918                         hdr = (struct ieee80211_hdr *) skb->data;
2919                         mac80211_hwsim_monitor_ack(data2->channel,
2920                                                    hdr->addr2);
2921                 }
2922                 txi->flags |= IEEE80211_TX_STAT_ACK;
2923         }
2924         ieee80211_tx_status_irqsafe(data2->hw, skb);
2925         return 0;
2926 out:
2927         return -EINVAL;
2928
2929 }
2930
2931 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
2932                                           struct genl_info *info)
2933 {
2934         struct mac80211_hwsim_data *data2;
2935         struct ieee80211_rx_status rx_status;
2936         const u8 *dst;
2937         int frame_data_len;
2938         void *frame_data;
2939         struct sk_buff *skb = NULL;
2940
2941         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
2942             !info->attrs[HWSIM_ATTR_FRAME] ||
2943             !info->attrs[HWSIM_ATTR_RX_RATE] ||
2944             !info->attrs[HWSIM_ATTR_SIGNAL])
2945                 goto out;
2946
2947         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
2948         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
2949         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
2950
2951         /* Allocate new skb here */
2952         skb = alloc_skb(frame_data_len, GFP_KERNEL);
2953         if (skb == NULL)
2954                 goto err;
2955
2956         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
2957                 goto err;
2958
2959         /* Copy the data */
2960         memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
2961
2962         data2 = get_hwsim_data_ref_from_addr(dst);
2963         if (!data2)
2964                 goto out;
2965
2966         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
2967                 goto out;
2968
2969         if (info->snd_portid != data2->wmediumd)
2970                 goto out;
2971
2972         /* check if radio is configured properly */
2973
2974         if (data2->idle || !data2->started)
2975                 goto out;
2976
2977         /* A frame is received from user space */
2978         memset(&rx_status, 0, sizeof(rx_status));
2979         if (info->attrs[HWSIM_ATTR_FREQ]) {
2980                 /* throw away off-channel packets, but allow both the temporary
2981                  * ("hw" scan/remain-on-channel) and regular channel, since the
2982                  * internal datapath also allows this
2983                  */
2984                 mutex_lock(&data2->mutex);
2985                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
2986
2987                 if (rx_status.freq != data2->channel->center_freq &&
2988                     (!data2->tmp_chan ||
2989                      rx_status.freq != data2->tmp_chan->center_freq)) {
2990                         mutex_unlock(&data2->mutex);
2991                         goto out;
2992                 }
2993                 mutex_unlock(&data2->mutex);
2994         } else {
2995                 rx_status.freq = data2->channel->center_freq;
2996         }
2997
2998         rx_status.band = data2->channel->band;
2999         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3000         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3001
3002         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3003         data2->rx_pkts++;
3004         data2->rx_bytes += skb->len;
3005         ieee80211_rx_irqsafe(data2->hw, skb);
3006
3007         return 0;
3008 err:
3009         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3010 out:
3011         dev_kfree_skb(skb);
3012         return -EINVAL;
3013 }
3014
3015 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3016                                       struct genl_info *info)
3017 {
3018         struct net *net = genl_info_net(info);
3019         struct mac80211_hwsim_data *data;
3020         int chans = 1;
3021
3022         spin_lock_bh(&hwsim_radio_lock);
3023         list_for_each_entry(data, &hwsim_radios, list)
3024                 chans = max(chans, data->channels);
3025         spin_unlock_bh(&hwsim_radio_lock);
3026
3027         /* In the future we should revise the userspace API and allow it
3028          * to set a flag that it does support multi-channel, then we can
3029          * let this pass conditionally on the flag.
3030          * For current userspace, prohibit it since it won't work right.
3031          */
3032         if (chans > 1)
3033                 return -EOPNOTSUPP;
3034
3035         if (hwsim_net_get_wmediumd(net))
3036                 return -EBUSY;
3037
3038         hwsim_register_wmediumd(net, info->snd_portid);
3039
3040         printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
3041                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3042
3043         return 0;
3044 }
3045
3046 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3047 {
3048         struct hwsim_new_radio_params param = { 0 };
3049
3050         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3051         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3052         param.channels = channels;
3053         param.destroy_on_close =
3054                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3055
3056         if (info->attrs[HWSIM_ATTR_CHANNELS])
3057                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3058
3059         if (info->attrs[HWSIM_ATTR_NO_VIF])
3060                 param.no_vif = true;
3061
3062         if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3063                 param.hwname = nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3064
3065         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3066                 param.use_chanctx = true;
3067         else
3068                 param.use_chanctx = (param.channels > 1);
3069
3070         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3071                 param.reg_alpha2 =
3072                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3073
3074         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3075                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3076
3077                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3078                         return -EINVAL;
3079                 param.regd = hwsim_world_regdom_custom[idx];
3080         }
3081
3082         return mac80211_hwsim_new_radio(info, &param);
3083 }
3084
3085 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3086 {
3087         struct mac80211_hwsim_data *data;
3088         s64 idx = -1;
3089         const char *hwname = NULL;
3090
3091         if (info->attrs[HWSIM_ATTR_RADIO_ID])
3092                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3093         else if (info->attrs[HWSIM_ATTR_RADIO_NAME])
3094                 hwname = (void *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]);
3095         else
3096                 return -EINVAL;
3097
3098         spin_lock_bh(&hwsim_radio_lock);
3099         list_for_each_entry(data, &hwsim_radios, list) {
3100                 if (idx >= 0) {
3101                         if (data->idx != idx)
3102                                 continue;
3103                 } else {
3104                         if (strcmp(hwname, wiphy_name(data->hw->wiphy)))
3105                                 continue;
3106                 }
3107
3108                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3109                         continue;
3110
3111                 list_del(&data->list);
3112                 spin_unlock_bh(&hwsim_radio_lock);
3113                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3114                                          info);
3115                 return 0;
3116         }
3117         spin_unlock_bh(&hwsim_radio_lock);
3118
3119         return -ENODEV;
3120 }
3121
3122 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3123 {
3124         struct mac80211_hwsim_data *data;
3125         struct sk_buff *skb;
3126         int idx, res = -ENODEV;
3127
3128         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3129                 return -EINVAL;
3130         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3131
3132         spin_lock_bh(&hwsim_radio_lock);
3133         list_for_each_entry(data, &hwsim_radios, list) {
3134                 if (data->idx != idx)
3135                         continue;
3136
3137                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3138                         continue;
3139
3140                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3141                 if (!skb) {
3142                         res = -ENOMEM;
3143                         goto out_err;
3144                 }
3145
3146                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3147                                                info->snd_seq, NULL, 0);
3148                 if (res < 0) {
3149                         nlmsg_free(skb);
3150                         goto out_err;
3151                 }
3152
3153                 genlmsg_reply(skb, info);
3154                 break;
3155         }
3156
3157 out_err:
3158         spin_unlock_bh(&hwsim_radio_lock);
3159
3160         return res;
3161 }
3162
3163 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3164                                struct netlink_callback *cb)
3165 {
3166         int idx = cb->args[0];
3167         struct mac80211_hwsim_data *data = NULL;
3168         int res;
3169
3170         spin_lock_bh(&hwsim_radio_lock);
3171
3172         if (idx == hwsim_radio_idx)
3173                 goto done;
3174
3175         list_for_each_entry(data, &hwsim_radios, list) {
3176                 if (data->idx < idx)
3177                         continue;
3178
3179                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3180                         continue;
3181
3182                 res = mac80211_hwsim_get_radio(skb, data,
3183                                                NETLINK_CB(cb->skb).portid,
3184                                                cb->nlh->nlmsg_seq, cb,
3185                                                NLM_F_MULTI);
3186                 if (res < 0)
3187                         break;
3188
3189                 idx = data->idx + 1;
3190         }
3191
3192         cb->args[0] = idx;
3193
3194 done:
3195         spin_unlock_bh(&hwsim_radio_lock);
3196         return skb->len;
3197 }
3198
3199 /* Generic Netlink operations array */
3200 static const struct genl_ops hwsim_ops[] = {
3201         {
3202                 .cmd = HWSIM_CMD_REGISTER,
3203                 .policy = hwsim_genl_policy,
3204                 .doit = hwsim_register_received_nl,
3205                 .flags = GENL_UNS_ADMIN_PERM,
3206         },
3207         {
3208                 .cmd = HWSIM_CMD_FRAME,
3209                 .policy = hwsim_genl_policy,
3210                 .doit = hwsim_cloned_frame_received_nl,
3211         },
3212         {
3213                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3214                 .policy = hwsim_genl_policy,
3215                 .doit = hwsim_tx_info_frame_received_nl,
3216         },
3217         {
3218                 .cmd = HWSIM_CMD_NEW_RADIO,
3219                 .policy = hwsim_genl_policy,
3220                 .doit = hwsim_new_radio_nl,
3221                 .flags = GENL_UNS_ADMIN_PERM,
3222         },
3223         {
3224                 .cmd = HWSIM_CMD_DEL_RADIO,
3225                 .policy = hwsim_genl_policy,
3226                 .doit = hwsim_del_radio_nl,
3227                 .flags = GENL_UNS_ADMIN_PERM,
3228         },
3229         {
3230                 .cmd = HWSIM_CMD_GET_RADIO,
3231                 .policy = hwsim_genl_policy,
3232                 .doit = hwsim_get_radio_nl,
3233                 .dumpit = hwsim_dump_radio_nl,
3234         },
3235 };
3236
3237 static void destroy_radio(struct work_struct *work)
3238 {
3239         struct mac80211_hwsim_data *data =
3240                 container_of(work, struct mac80211_hwsim_data, destroy_work);
3241
3242         mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy), NULL);
3243 }
3244
3245 static void remove_user_radios(u32 portid)
3246 {
3247         struct mac80211_hwsim_data *entry, *tmp;
3248
3249         spin_lock_bh(&hwsim_radio_lock);
3250         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3251                 if (entry->destroy_on_close && entry->portid == portid) {
3252                         list_del(&entry->list);
3253                         INIT_WORK(&entry->destroy_work, destroy_radio);
3254                         schedule_work(&entry->destroy_work);
3255                 }
3256         }
3257         spin_unlock_bh(&hwsim_radio_lock);
3258 }
3259
3260 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3261                                          unsigned long state,
3262                                          void *_notify)
3263 {
3264         struct netlink_notify *notify = _notify;
3265
3266         if (state != NETLINK_URELEASE)
3267                 return NOTIFY_DONE;
3268
3269         remove_user_radios(notify->portid);
3270
3271         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3272                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3273                        " socket, switching to perfect channel medium\n");
3274                 hwsim_register_wmediumd(notify->net, 0);
3275         }
3276         return NOTIFY_DONE;
3277
3278 }
3279
3280 static struct notifier_block hwsim_netlink_notifier = {
3281         .notifier_call = mac80211_hwsim_netlink_notify,
3282 };
3283
3284 static int hwsim_init_netlink(void)
3285 {
3286         int rc;
3287
3288         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3289
3290         rc = genl_register_family_with_ops_groups(&hwsim_genl_family,
3291                                                   hwsim_ops,
3292                                                   hwsim_mcgrps);
3293         if (rc)
3294                 goto failure;
3295
3296         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3297         if (rc) {
3298                 genl_unregister_family(&hwsim_genl_family);
3299                 goto failure;
3300         }
3301
3302         return 0;
3303
3304 failure:
3305         printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
3306         return -EINVAL;
3307 }
3308
3309 static __net_init int hwsim_init_net(struct net *net)
3310 {
3311         hwsim_net_set_netgroup(net);
3312
3313         return 0;
3314 }
3315
3316 static void __net_exit hwsim_exit_net(struct net *net)
3317 {
3318         struct mac80211_hwsim_data *data, *tmp;
3319
3320         spin_lock_bh(&hwsim_radio_lock);
3321         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3322                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3323                         continue;
3324
3325                 /* Radios created in init_net are returned to init_net. */
3326                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3327                         continue;
3328
3329                 list_del(&data->list);
3330                 INIT_WORK(&data->destroy_work, destroy_radio);
3331                 schedule_work(&data->destroy_work);
3332         }
3333         spin_unlock_bh(&hwsim_radio_lock);
3334 }
3335
3336 static struct pernet_operations hwsim_net_ops = {
3337         .init = hwsim_init_net,
3338         .exit = hwsim_exit_net,
3339         .id   = &hwsim_net_id,
3340         .size = sizeof(struct hwsim_net),
3341 };
3342
3343 static void hwsim_exit_netlink(void)
3344 {
3345         /* unregister the notifier */
3346         netlink_unregister_notifier(&hwsim_netlink_notifier);
3347         /* unregister the family */
3348         genl_unregister_family(&hwsim_genl_family);
3349 }
3350
3351 static int __init init_mac80211_hwsim(void)
3352 {
3353         int i, err;
3354
3355         if (radios < 0 || radios > 100)
3356                 return -EINVAL;
3357
3358         if (channels < 1)
3359                 return -EINVAL;
3360
3361         mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
3362         mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
3363         mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
3364         mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
3365         mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
3366         mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
3367         mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
3368         mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
3369         mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
3370         mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
3371         mac80211_hwsim_mchan_ops.assign_vif_chanctx =
3372                 mac80211_hwsim_assign_vif_chanctx;
3373         mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
3374                 mac80211_hwsim_unassign_vif_chanctx;
3375
3376         spin_lock_init(&hwsim_radio_lock);
3377
3378         err = register_pernet_device(&hwsim_net_ops);
3379         if (err)
3380                 return err;
3381
3382         err = platform_driver_register(&mac80211_hwsim_driver);
3383         if (err)
3384                 goto out_unregister_pernet;
3385
3386         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3387         if (IS_ERR(hwsim_class)) {
3388                 err = PTR_ERR(hwsim_class);
3389                 goto out_unregister_driver;
3390         }
3391
3392         err = hwsim_init_netlink();
3393         if (err < 0)
3394                 goto out_unregister_driver;
3395
3396         for (i = 0; i < radios; i++) {
3397                 struct hwsim_new_radio_params param = { 0 };
3398
3399                 param.channels = channels;
3400
3401                 switch (regtest) {
3402                 case HWSIM_REGTEST_DIFF_COUNTRY:
3403                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3404                                 param.reg_alpha2 = hwsim_alpha2s[i];
3405                         break;
3406                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3407                         if (!i)
3408                                 param.reg_alpha2 = hwsim_alpha2s[0];
3409                         break;
3410                 case HWSIM_REGTEST_STRICT_ALL:
3411                         param.reg_strict = true;
3412                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3413                         param.reg_alpha2 = hwsim_alpha2s[0];
3414                         break;
3415                 case HWSIM_REGTEST_WORLD_ROAM:
3416                         if (i == 0)
3417                                 param.regd = &hwsim_world_regdom_custom_01;
3418                         break;
3419                 case HWSIM_REGTEST_CUSTOM_WORLD:
3420                         param.regd = &hwsim_world_regdom_custom_01;
3421                         break;
3422                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3423                         if (i == 0)
3424                                 param.regd = &hwsim_world_regdom_custom_01;
3425                         else if (i == 1)
3426                                 param.regd = &hwsim_world_regdom_custom_02;
3427                         break;
3428                 case HWSIM_REGTEST_STRICT_FOLLOW:
3429                         if (i == 0) {
3430                                 param.reg_strict = true;
3431                                 param.reg_alpha2 = hwsim_alpha2s[0];
3432                         }
3433                         break;
3434                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3435                         if (i == 0) {
3436                                 param.reg_strict = true;
3437                                 param.reg_alpha2 = hwsim_alpha2s[0];
3438                         } else if (i == 1) {
3439                                 param.reg_alpha2 = hwsim_alpha2s[1];
3440                         }
3441                         break;
3442                 case HWSIM_REGTEST_ALL:
3443                         switch (i) {
3444                         case 0:
3445                                 param.regd = &hwsim_world_regdom_custom_01;
3446                                 break;
3447                         case 1:
3448                                 param.regd = &hwsim_world_regdom_custom_02;
3449                                 break;
3450                         case 2:
3451                                 param.reg_alpha2 = hwsim_alpha2s[0];
3452                                 break;
3453                         case 3:
3454                                 param.reg_alpha2 = hwsim_alpha2s[1];
3455                                 break;
3456                         case 4:
3457                                 param.reg_strict = true;
3458                                 param.reg_alpha2 = hwsim_alpha2s[2];
3459                                 break;
3460                         }
3461                         break;
3462                 default:
3463                         break;
3464                 }
3465
3466                 param.p2p_device = support_p2p_device;
3467                 param.use_chanctx = channels > 1;
3468
3469                 err = mac80211_hwsim_new_radio(NULL, &param);
3470                 if (err < 0)
3471                         goto out_free_radios;
3472         }
3473
3474         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3475                                  hwsim_mon_setup);
3476         if (hwsim_mon == NULL) {
3477                 err = -ENOMEM;
3478                 goto out_free_radios;
3479         }
3480
3481         rtnl_lock();
3482         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3483         if (err < 0) {
3484                 rtnl_unlock();
3485                 goto out_free_radios;
3486         }
3487
3488         err = register_netdevice(hwsim_mon);
3489         if (err < 0) {
3490                 rtnl_unlock();
3491                 goto out_free_mon;
3492         }
3493         rtnl_unlock();
3494
3495         return 0;
3496
3497 out_free_mon:
3498         free_netdev(hwsim_mon);
3499 out_free_radios:
3500         mac80211_hwsim_free();
3501 out_unregister_driver:
3502         platform_driver_unregister(&mac80211_hwsim_driver);
3503 out_unregister_pernet:
3504         unregister_pernet_device(&hwsim_net_ops);
3505         return err;
3506 }
3507 module_init(init_mac80211_hwsim);
3508
3509 static void __exit exit_mac80211_hwsim(void)
3510 {
3511         printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
3512
3513         hwsim_exit_netlink();
3514
3515         mac80211_hwsim_free();
3516         unregister_netdev(hwsim_mon);
3517         platform_driver_unregister(&mac80211_hwsim_driver);
3518         unregister_pernet_device(&hwsim_net_ops);
3519 }
3520 module_exit(exit_mac80211_hwsim);