drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018 - 2019 Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * The full GNU General Public License is included in this distribution
  23  * in the file called COPYING.
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  25  * Contact Information:
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  27  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  28  *
  29  * BSD LICENSE
  30  *
  31  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  33  * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
  34  * Copyright(c) 2018 - 2019 Intel Corporation
  35  * All rights reserved.
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  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  *
  41  *  * Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  *  * Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in
  45  *    the documentation and/or other materials provided with the
  46  *    distribution.
  47  *  * Neither the name Intel Corporation nor the names of its
  48  *    contributors may be used to endorse or promote products derived
  49  *    from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  56  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  57  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  58  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  59  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  *****************************************************************************/
  63 #include <linux/etherdevice.h>
  64 #include <linux/skbuff.h>
  65 #include "iwl-trans.h"
  66 #include "mvm.h"
  67 #include "fw-api.h"
  68
  69 static void *iwl_mvm_skb_get_hdr(struct sk_buff *skb)
  70 {
  71         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
  72         u8 *data = skb->data;
  73
  74         /* Alignment concerns */
  75         BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he) % 4);
  76         BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he_mu) % 4);
  77         BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_lsig) % 4);
  78         BUILD_BUG_ON(sizeof(struct ieee80211_vendor_radiotap) % 4);
  79
  80         if (rx_status->flag & RX_FLAG_RADIOTAP_HE)
  81                 data += sizeof(struct ieee80211_radiotap_he);
  82         if (rx_status->flag & RX_FLAG_RADIOTAP_HE_MU)
  83                 data += sizeof(struct ieee80211_radiotap_he_mu);
  84         if (rx_status->flag & RX_FLAG_RADIOTAP_LSIG)
  85                 data += sizeof(struct ieee80211_radiotap_lsig);
  86         if (rx_status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {
  87                 struct ieee80211_vendor_radiotap *radiotap = (void *)data;
  88
  89                 data += sizeof(*radiotap) + radiotap->len + radiotap->pad;
  90         }
  91
  92         return data;
  93 }
  94
  95 static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
  96                                    int queue, struct ieee80211_sta *sta)
  97 {
  98         struct iwl_mvm_sta *mvmsta;
  99         struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
 100         struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
 101         struct iwl_mvm_key_pn *ptk_pn;
 102         int res;
 103         u8 tid, keyidx;
 104         u8 pn[IEEE80211_CCMP_PN_LEN];
 105         u8 *extiv;
 106
 107         /* do PN checking */
 108
 109         /* multicast and non-data only arrives on default queue */
 110         if (!ieee80211_is_data(hdr->frame_control) ||
 111             is_multicast_ether_addr(hdr->addr1))
 112                 return 0;
 113
 114         /* do not check PN for open AP */
 115         if (!(stats->flag & RX_FLAG_DECRYPTED))
 116                 return 0;
 117
 118         /*
 119          * avoid checking for default queue - we don't want to replicate
 120          * all the logic that's necessary for checking the PN on fragmented
 121          * frames, leave that to mac80211
 122          */
 123         if (queue == 0)
 124                 return 0;
 125
 126         /* if we are here - this for sure is either CCMP or GCMP */
 127         if (IS_ERR_OR_NULL(sta)) {
 128                 IWL_ERR(mvm,
 129                         "expected hw-decrypted unicast frame for station\n");
 130                 return -1;
 131         }
 132
 133         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 134
 135         extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
 136         keyidx = extiv[3] >> 6;
 137
 138         ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
 139         if (!ptk_pn)
 140                 return -1;
 141
 142         if (ieee80211_is_data_qos(hdr->frame_control))
 143                 tid = ieee80211_get_tid(hdr);
 144         else
 145                 tid = 0;
 146
 147         /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
 148         if (tid >= IWL_MAX_TID_COUNT)
 149                 return -1;
 150
 151         /* load pn */
 152         pn[0] = extiv[7];
 153         pn[1] = extiv[6];
 154         pn[2] = extiv[5];
 155         pn[3] = extiv[4];
 156         pn[4] = extiv[1];
 157         pn[5] = extiv[0];
 158
 159         res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN);
 160         if (res < 0)
 161                 return -1;
 162         if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN))
 163                 return -1;
 164
 165         memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
 166         stats->flag |= RX_FLAG_PN_VALIDATED;
 167
 168         return 0;
 169 }
 170
 171 /* iwl_mvm_create_skb Adds the rxb to a new skb */
 172 static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
 173                               struct ieee80211_hdr *hdr, u16 len, u8 crypt_len,
 174                               struct iwl_rx_cmd_buffer *rxb)
 175 {
 176         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 177         struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
 178         unsigned int headlen, fraglen, pad_len = 0;
 179         unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
 180
 181         if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
 182                 len -= 2;
 183                 pad_len = 2;
 184         }
 185
 186         /* If frame is small enough to fit in skb->head, pull it completely.
 187          * If not, only pull ieee80211_hdr (including crypto if present, and
 188          * an additional 8 bytes for SNAP/ethertype, see below) so that
 189          * splice() or TCP coalesce are more efficient.
 190          *
 191          * Since, in addition, ieee80211_data_to_8023() always pull in at
 192          * least 8 bytes (possibly more for mesh) we can do the same here
 193          * to save the cost of doing it later. That still doesn't pull in
 194          * the actual IP header since the typical case has a SNAP header.
 195          * If the latter changes (there are efforts in the standards group
 196          * to do so) we should revisit this and ieee80211_data_to_8023().
 197          */
 198         headlen = (len <= skb_tailroom(skb)) ? len :
 199                                                hdrlen + crypt_len + 8;
 200
 201         /* The firmware may align the packet to DWORD.
 202          * The padding is inserted after the IV.
 203          * After copying the header + IV skip the padding if
 204          * present before copying packet data.
 205          */
 206         hdrlen += crypt_len;
 207
 208         if (WARN_ONCE(headlen < hdrlen,
 209                       "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n",
 210                       hdrlen, len, crypt_len)) {
 211                 /*
 212                  * We warn and trace because we want to be able to see
 213                  * it in trace-cmd as well.
 214                  */
 215                 IWL_DEBUG_RX(mvm,
 216                              "invalid packet lengths (hdrlen=%d, len=%d, crypt_len=%d)\n",
 217                              hdrlen, len, crypt_len);
 218                 return -EINVAL;
 219         }
 220
 221         skb_put_data(skb, hdr, hdrlen);
 222         skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);
 223
 224         fraglen = len - headlen;
 225
 226         if (fraglen) {
 227                 int offset = (void *)hdr + headlen + pad_len -
 228                              rxb_addr(rxb) + rxb_offset(rxb);
 229
 230                 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
 231                                 fraglen, rxb->truesize);
 232         }
 233
 234         return 0;
 235 }
 236
 237 static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm,
 238                                             struct sk_buff *skb)
 239 {
 240         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
 241         struct ieee80211_vendor_radiotap *radiotap;
 242         const int size = sizeof(*radiotap) + sizeof(__le16);
 243
 244         if (!mvm->cur_aid)
 245                 return;
 246
 247         /* ensure alignment */
 248         BUILD_BUG_ON((size + 2) % 4);
 249
 250         radiotap = skb_put(skb, size + 2);
 251         radiotap->align = 1;
 252         /* Intel OUI */
 253         radiotap->oui[0] = 0xf6;
 254         radiotap->oui[1] = 0x54;
 255         radiotap->oui[2] = 0x25;
 256         /* radiotap sniffer config sub-namespace */
 257         radiotap->subns = 1;
 258         radiotap->present = 0x1;
 259         radiotap->len = size - sizeof(*radiotap);
 260         radiotap->pad = 2;
 261
 262         /* fill the data now */
 263         memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
 264         /* and clear the padding */
 265         memset(radiotap->data + sizeof(__le16), 0, radiotap->pad);
 266
 267         rx_status->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
 268 }
 269
 270 /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
 271 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
 272                                             struct napi_struct *napi,
 273                                             struct sk_buff *skb, int queue,
 274                                             struct ieee80211_sta *sta,
 275                                             bool csi)
 276 {
 277         if (iwl_mvm_check_pn(mvm, skb, queue, sta))
 278                 kfree_skb(skb);
 279         else
 280                 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
 281 }
 282
 283 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
 284                                         struct ieee80211_rx_status *rx_status,
 285                                         u32 rate_n_flags, int energy_a,
 286                                         int energy_b)
 287 {
 288         int max_energy;
 289         u32 rate_flags = rate_n_flags;
 290
 291         energy_a = energy_a ? -energy_a : S8_MIN;
 292         energy_b = energy_b ? -energy_b : S8_MIN;
 293         max_energy = max(energy_a, energy_b);
 294
 295         IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
 296                         energy_a, energy_b, max_energy);
 297
 298         rx_status->signal = max_energy;
 299         rx_status->chains =
 300                 (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
 301         rx_status->chain_signal[0] = energy_a;
 302         rx_status->chain_signal[1] = energy_b;
 303         rx_status->chain_signal[2] = S8_MIN;
 304 }
 305
 306 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
 307                              struct ieee80211_rx_status *stats, u16 phy_info,
 308                              struct iwl_rx_mpdu_desc *desc,
 309                              u32 pkt_flags, int queue, u8 *crypt_len)
 310 {
 311         u16 status = le16_to_cpu(desc->status);
 312
 313         /*
 314          * Drop UNKNOWN frames in aggregation, unless in monitor mode
 315          * (where we don't have the keys).
 316          * We limit this to aggregation because in TKIP this is a valid
 317          * scenario, since we may not have the (correct) TTAK (phase 1
 318          * key) in the firmware.
 319          */
 320         if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
 321             (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
 322             IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on)
 323                 return -1;
 324
 325         if (!ieee80211_has_protected(hdr->frame_control) ||
 326             (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
 327             IWL_RX_MPDU_STATUS_SEC_NONE)
 328                 return 0;
 329
 330         /* TODO: handle packets encrypted with unknown alg */
 331
 332         switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
 333         case IWL_RX_MPDU_STATUS_SEC_CCM:
 334         case IWL_RX_MPDU_STATUS_SEC_GCM:
 335                 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
 336                 /* alg is CCM: check MIC only */
 337                 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
 338                         return -1;
 339
 340                 stats->flag |= RX_FLAG_DECRYPTED;
 341                 if (pkt_flags & FH_RSCSR_RADA_EN)
 342                         stats->flag |= RX_FLAG_MIC_STRIPPED;
 343                 *crypt_len = IEEE80211_CCMP_HDR_LEN;
 344                 return 0;
 345         case IWL_RX_MPDU_STATUS_SEC_TKIP:
 346                 /* Don't drop the frame and decrypt it in SW */
 347                 if (!fw_has_api(&mvm->fw->ucode_capa,
 348                                 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
 349                     !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
 350                         return 0;
 351
 352                 if (mvm->trans->cfg->gen2 &&
 353                     !(status & RX_MPDU_RES_STATUS_MIC_OK))
 354                         stats->flag |= RX_FLAG_MMIC_ERROR;
 355
 356                 *crypt_len = IEEE80211_TKIP_IV_LEN;
 357                 /* fall through */
 358         case IWL_RX_MPDU_STATUS_SEC_WEP:
 359                 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
 360                         return -1;
 361
 362                 stats->flag |= RX_FLAG_DECRYPTED;
 363                 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
 364                                 IWL_RX_MPDU_STATUS_SEC_WEP)
 365                         *crypt_len = IEEE80211_WEP_IV_LEN;
 366
 367                 if (pkt_flags & FH_RSCSR_RADA_EN) {
 368                         stats->flag |= RX_FLAG_ICV_STRIPPED;
 369                         if (mvm->trans->cfg->gen2)
 370                                 stats->flag |= RX_FLAG_MMIC_STRIPPED;
 371                 }
 372
 373                 return 0;
 374         case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
 375                 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
 376                         return -1;
 377                 stats->flag |= RX_FLAG_DECRYPTED;
 378                 return 0;
 379         default:
 380                 /* Expected in monitor (not having the keys) */
 381                 if (!mvm->monitor_on)
 382                         IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status);
 383         }
 384
 385         return 0;
 386 }
 387
 388 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
 389                             struct sk_buff *skb,
 390                             struct iwl_rx_mpdu_desc *desc)
 391 {
 392         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 393         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 394         u16 flags = le16_to_cpu(desc->l3l4_flags);
 395         u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
 396                           IWL_RX_L3_PROTO_POS);
 397
 398         if (mvmvif->features & NETIF_F_RXCSUM &&
 399             flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
 400             (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
 401              l3_prot == IWL_RX_L3_TYPE_IPV6 ||
 402              l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
 403                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 404 }
 405
 406 /*
 407  * returns true if a packet is a duplicate and should be dropped.
 408  * Updates AMSDU PN tracking info
 409  */
 410 static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
 411                            struct ieee80211_rx_status *rx_status,
 412                            struct ieee80211_hdr *hdr,
 413                            struct iwl_rx_mpdu_desc *desc)
 414 {
 415         struct iwl_mvm_sta *mvm_sta;
 416         struct iwl_mvm_rxq_dup_data *dup_data;
 417         u8 tid, sub_frame_idx;
 418
 419         if (WARN_ON(IS_ERR_OR_NULL(sta)))
 420                 return false;
 421
 422         mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 423         dup_data = &mvm_sta->dup_data[queue];
 424
 425         /*
 426          * Drop duplicate 802.11 retransmissions
 427          * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
 428          */
 429         if (ieee80211_is_ctl(hdr->frame_control) ||
 430             ieee80211_is_qos_nullfunc(hdr->frame_control) ||
 431             is_multicast_ether_addr(hdr->addr1)) {
 432                 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
 433                 return false;
 434         }
 435
 436         if (ieee80211_is_data_qos(hdr->frame_control))
 437                 /* frame has qos control */
 438                 tid = ieee80211_get_tid(hdr);
 439         else
 440                 tid = IWL_MAX_TID_COUNT;
 441
 442         /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
 443         sub_frame_idx = desc->amsdu_info &
 444                 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
 445
 446         if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
 447                      dup_data->last_seq[tid] == hdr->seq_ctrl &&
 448                      dup_data->last_sub_frame[tid] >= sub_frame_idx))
 449                 return true;
 450
 451         /* Allow same PN as the first subframe for following sub frames */
 452         if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
 453             sub_frame_idx > dup_data->last_sub_frame[tid] &&
 454             desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
 455                 rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;
 456
 457         dup_data->last_seq[tid] = hdr->seq_ctrl;
 458         dup_data->last_sub_frame[tid] = sub_frame_idx;
 459
 460         rx_status->flag |= RX_FLAG_DUP_VALIDATED;
 461
 462         return false;
 463 }
 464
 465 int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask,
 466                             const u8 *data, u32 count)
 467 {
 468         struct iwl_rxq_sync_cmd *cmd;
 469         u32 data_size = sizeof(*cmd) + count;
 470         int ret;
 471
 472         /* should be DWORD aligned */
 473         if (WARN_ON(count & 3 || count > IWL_MULTI_QUEUE_SYNC_MSG_MAX_SIZE))
 474                 return -EINVAL;
 475
 476         cmd = kzalloc(data_size, GFP_KERNEL);
 477         if (!cmd)
 478                 return -ENOMEM;
 479
 480         cmd->rxq_mask = cpu_to_le32(rxq_mask);
 481         cmd->count =  cpu_to_le32(count);
 482         cmd->flags = 0;
 483         memcpy(cmd->payload, data, count);
 484
 485         ret = iwl_mvm_send_cmd_pdu(mvm,
 486                                    WIDE_ID(DATA_PATH_GROUP,
 487                                            TRIGGER_RX_QUEUES_NOTIF_CMD),
 488                                    0, data_size, cmd);
 489
 490         kfree(cmd);
 491         return ret;
 492 }
 493
 494 /*
 495  * Returns true if sn2 - buffer_size < sn1 < sn2.
 496  * To be used only in order to compare reorder buffer head with NSSN.
 497  * We fully trust NSSN unless it is behind us due to reorder timeout.
 498  * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN.
 499  */
 500 static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size)
 501 {
 502         return ieee80211_sn_less(sn1, sn2) &&
 503                !ieee80211_sn_less(sn1, sn2 - buffer_size);
 504 }
 505
 506 #define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10)
 507
 508 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
 509                                    struct ieee80211_sta *sta,
 510                                    struct napi_struct *napi,
 511                                    struct iwl_mvm_baid_data *baid_data,
 512                                    struct iwl_mvm_reorder_buffer *reorder_buf,
 513                                    u16 nssn)
 514 {
 515         struct iwl_mvm_reorder_buf_entry *entries =
 516                 &baid_data->entries[reorder_buf->queue *
 517                                     baid_data->entries_per_queue];
 518         u16 ssn = reorder_buf->head_sn;
 519
 520         lockdep_assert_held(&reorder_buf->lock);
 521
 522         /* ignore nssn smaller than head sn - this can happen due to timeout */
 523         if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
 524                 goto set_timer;
 525
 526         while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
 527                 int index = ssn % reorder_buf->buf_size;
 528                 struct sk_buff_head *skb_list = &entries[index].e.frames;
 529                 struct sk_buff *skb;
 530
 531                 ssn = ieee80211_sn_inc(ssn);
 532
 533                 /*
 534                  * Empty the list. Will have more than one frame for A-MSDU.
 535                  * Empty list is valid as well since nssn indicates frames were
 536                  * received.
 537                  */
 538                 while ((skb = __skb_dequeue(skb_list))) {
 539                         iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
 540                                                         reorder_buf->queue,
 541                                                         sta, false);
 542                         reorder_buf->num_stored--;
 543                 }
 544         }
 545         reorder_buf->head_sn = nssn;
 546
 547 set_timer:
 548         if (reorder_buf->num_stored && !reorder_buf->removed) {
 549                 u16 index = reorder_buf->head_sn % reorder_buf->buf_size;
 550
 551                 while (skb_queue_empty(&entries[index].e.frames))
 552                         index = (index + 1) % reorder_buf->buf_size;
 553                 /* modify timer to match next frame's expiration time */
 554                 mod_timer(&reorder_buf->reorder_timer,
 555                           entries[index].e.reorder_time + 1 +
 556                           RX_REORDER_BUF_TIMEOUT_MQ);
 557         } else {
 558                 del_timer(&reorder_buf->reorder_timer);
 559         }
 560 }
 561
 562 void iwl_mvm_reorder_timer_expired(struct timer_list *t)
 563 {
 564         struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer);
 565         struct iwl_mvm_baid_data *baid_data =
 566                 iwl_mvm_baid_data_from_reorder_buf(buf);
 567         struct iwl_mvm_reorder_buf_entry *entries =
 568                 &baid_data->entries[buf->queue * baid_data->entries_per_queue];
 569         int i;
 570         u16 sn = 0, index = 0;
 571         bool expired = false;
 572         bool cont = false;
 573
 574         spin_lock(&buf->lock);
 575
 576         if (!buf->num_stored || buf->removed) {
 577                 spin_unlock(&buf->lock);
 578                 return;
 579         }
 580
 581         for (i = 0; i < buf->buf_size ; i++) {
 582                 index = (buf->head_sn + i) % buf->buf_size;
 583
 584                 if (skb_queue_empty(&entries[index].e.frames)) {
 585                         /*
 586                          * If there is a hole and the next frame didn't expire
 587                          * we want to break and not advance SN
 588                          */
 589                         cont = false;
 590                         continue;
 591                 }
 592                 if (!cont &&
 593                     !time_after(jiffies, entries[index].e.reorder_time +
 594                                          RX_REORDER_BUF_TIMEOUT_MQ))
 595                         break;
 596
 597                 expired = true;
 598                 /* continue until next hole after this expired frames */
 599                 cont = true;
 600                 sn = ieee80211_sn_add(buf->head_sn, i + 1);
 601         }
 602
 603         if (expired) {
 604                 struct ieee80211_sta *sta;
 605                 struct iwl_mvm_sta *mvmsta;
 606                 u8 sta_id = baid_data->sta_id;
 607
 608                 rcu_read_lock();
 609                 sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]);
 610                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
 611
 612                 /* SN is set to the last expired frame + 1 */
 613                 IWL_DEBUG_HT(buf->mvm,
 614                              "Releasing expired frames for sta %u, sn %d\n",
 615                              sta_id, sn);
 616                 iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif,
 617                                                      sta, baid_data->tid);
 618                 iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data, buf, sn);
 619                 rcu_read_unlock();
 620         } else {
 621                 /*
 622                  * If no frame expired and there are stored frames, index is now
 623                  * pointing to the first unexpired frame - modify timer
 624                  * accordingly to this frame.
 625                  */
 626                 mod_timer(&buf->reorder_timer,
 627                           entries[index].e.reorder_time +
 628                           1 + RX_REORDER_BUF_TIMEOUT_MQ);
 629         }
 630         spin_unlock(&buf->lock);
 631 }
 632
 633 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
 634                            struct iwl_mvm_delba_data *data)
 635 {
 636         struct iwl_mvm_baid_data *ba_data;
 637         struct ieee80211_sta *sta;
 638         struct iwl_mvm_reorder_buffer *reorder_buf;
 639         u8 baid = data->baid;
 640
 641         if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
 642                 return;
 643
 644         rcu_read_lock();
 645
 646         ba_data = rcu_dereference(mvm->baid_map[baid]);
 647         if (WARN_ON_ONCE(!ba_data))
 648                 goto out;
 649
 650         sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
 651         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
 652                 goto out;
 653
 654         reorder_buf = &ba_data->reorder_buf[queue];
 655
 656         /* release all frames that are in the reorder buffer to the stack */
 657         spin_lock_bh(&reorder_buf->lock);
 658         iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
 659                                ieee80211_sn_add(reorder_buf->head_sn,
 660                                                 reorder_buf->buf_size));
 661         spin_unlock_bh(&reorder_buf->lock);
 662         del_timer_sync(&reorder_buf->reorder_timer);
 663
 664 out:
 665         rcu_read_unlock();
 666 }
 667
 668 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
 669                             int queue)
 670 {
 671         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 672         struct iwl_rxq_sync_notification *notif;
 673         struct iwl_mvm_internal_rxq_notif *internal_notif;
 674
 675         notif = (void *)pkt->data;
 676         internal_notif = (void *)notif->payload;
 677
 678         if (internal_notif->sync &&
 679             mvm->queue_sync_cookie != internal_notif->cookie) {
 680                 WARN_ONCE(1, "Received expired RX queue sync message\n");
 681                 return;
 682         }
 683
 684         switch (internal_notif->type) {
 685         case IWL_MVM_RXQ_EMPTY:
 686                 break;
 687         case IWL_MVM_RXQ_NOTIF_DEL_BA:
 688                 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
 689                 break;
 690         default:
 691                 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
 692         }
 693
 694         if (internal_notif->sync &&
 695             !atomic_dec_return(&mvm->queue_sync_counter))
 696                 wake_up(&mvm->rx_sync_waitq);
 697 }
 698
 699 /*
 700  * Returns true if the MPDU was buffered\dropped, false if it should be passed
 701  * to upper layer.
 702  */
 703 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
 704                             struct napi_struct *napi,
 705                             int queue,
 706                             struct ieee80211_sta *sta,
 707                             struct sk_buff *skb,
 708                             struct iwl_rx_mpdu_desc *desc)
 709 {
 710         struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
 711         struct iwl_mvm_sta *mvm_sta;
 712         struct iwl_mvm_baid_data *baid_data;
 713         struct iwl_mvm_reorder_buffer *buffer;
 714         struct sk_buff *tail;
 715         u32 reorder = le32_to_cpu(desc->reorder_data);
 716         bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
 717         bool last_subframe =
 718                 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
 719         u8 tid = ieee80211_get_tid(hdr);
 720         u8 sub_frame_idx = desc->amsdu_info &
 721                            IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
 722         struct iwl_mvm_reorder_buf_entry *entries;
 723         int index;
 724         u16 nssn, sn;
 725         u8 baid;
 726
 727         baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
 728                 IWL_RX_MPDU_REORDER_BAID_SHIFT;
 729
 730         /*
 731          * This also covers the case of receiving a Block Ack Request
 732          * outside a BA session; we'll pass it to mac80211 and that
 733          * then sends a delBA action frame.
 734          * This also covers pure monitor mode, in which case we won't
 735          * have any BA sessions.
 736          */
 737         if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
 738                 return false;
 739
 740         /* no sta yet */
 741         if (WARN_ONCE(IS_ERR_OR_NULL(sta),
 742                       "Got valid BAID without a valid station assigned\n"))
 743                 return false;
 744
 745         mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 746
 747         /* not a data packet or a bar */
 748         if (!ieee80211_is_back_req(hdr->frame_control) &&
 749             (!ieee80211_is_data_qos(hdr->frame_control) ||
 750              is_multicast_ether_addr(hdr->addr1)))
 751                 return false;
 752
 753         if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
 754                 return false;
 755
 756         baid_data = rcu_dereference(mvm->baid_map[baid]);
 757         if (!baid_data) {
 758                 IWL_DEBUG_RX(mvm,
 759                              "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
 760                               baid, reorder);
 761                 return false;
 762         }
 763
 764         if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id,
 765                  "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n",
 766                  baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id,
 767                  tid))
 768                 return false;
 769
 770         nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
 771         sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
 772                 IWL_RX_MPDU_REORDER_SN_SHIFT;
 773
 774         buffer = &baid_data->reorder_buf[queue];
 775         entries = &baid_data->entries[queue * baid_data->entries_per_queue];
 776
 777         spin_lock_bh(&buffer->lock);
 778
 779         if (!buffer->valid) {
 780                 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
 781                         spin_unlock_bh(&buffer->lock);
 782                         return false;
 783                 }
 784                 buffer->valid = true;
 785         }
 786
 787         if (ieee80211_is_back_req(hdr->frame_control)) {
 788                 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);
 789                 goto drop;
 790         }
 791
 792         /*
 793          * If there was a significant jump in the nssn - adjust.
 794          * If the SN is smaller than the NSSN it might need to first go into
 795          * the reorder buffer, in which case we just release up to it and the
 796          * rest of the function will take care of storing it and releasing up to
 797          * the nssn
 798          */
 799         if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
 800                                 buffer->buf_size) ||
 801             !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
 802                 u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;
 803
 804                 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
 805                                        min_sn);
 806         }
 807
 808         /* drop any oudated packets */
 809         if (ieee80211_sn_less(sn, buffer->head_sn))
 810                 goto drop;
 811
 812         /* release immediately if allowed by nssn and no stored frames */
 813         if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
 814                 if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
 815                                        buffer->buf_size) &&
 816                    (!amsdu || last_subframe))
 817                         buffer->head_sn = nssn;
 818                 /* No need to update AMSDU last SN - we are moving the head */
 819                 spin_unlock_bh(&buffer->lock);
 820                 return false;
 821         }
 822
 823         /*
 824          * release immediately if there are no stored frames, and the sn is
 825          * equal to the head.
 826          * This can happen due to reorder timer, where NSSN is behind head_sn.
 827          * When we released everything, and we got the next frame in the
 828          * sequence, according to the NSSN we can't release immediately,
 829          * while technically there is no hole and we can move forward.
 830          */
 831         if (!buffer->num_stored && sn == buffer->head_sn) {
 832                 if (!amsdu || last_subframe)
 833                         buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
 834                 /* No need to update AMSDU last SN - we are moving the head */
 835                 spin_unlock_bh(&buffer->lock);
 836                 return false;
 837         }
 838
 839         index = sn % buffer->buf_size;
 840
 841         /*
 842          * Check if we already stored this frame
 843          * As AMSDU is either received or not as whole, logic is simple:
 844          * If we have frames in that position in the buffer and the last frame
 845          * originated from AMSDU had a different SN then it is a retransmission.
 846          * If it is the same SN then if the subframe index is incrementing it
 847          * is the same AMSDU - otherwise it is a retransmission.
 848          */
 849         tail = skb_peek_tail(&entries[index].e.frames);
 850         if (tail && !amsdu)
 851                 goto drop;
 852         else if (tail && (sn != buffer->last_amsdu ||
 853                           buffer->last_sub_index >= sub_frame_idx))
 854                 goto drop;
 855
 856         /* put in reorder buffer */
 857         __skb_queue_tail(&entries[index].e.frames, skb);
 858         buffer->num_stored++;
 859         entries[index].e.reorder_time = jiffies;
 860
 861         if (amsdu) {
 862                 buffer->last_amsdu = sn;
 863                 buffer->last_sub_index = sub_frame_idx;
 864         }
 865
 866         /*
 867          * We cannot trust NSSN for AMSDU sub-frames that are not the last.
 868          * The reason is that NSSN advances on the first sub-frame, and may
 869          * cause the reorder buffer to advance before all the sub-frames arrive.
 870          * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
 871          * SN 1. NSSN for first sub frame will be 3 with the result of driver
 872          * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
 873          * already ahead and it will be dropped.
 874          * If the last sub-frame is not on this queue - we will get frame
 875          * release notification with up to date NSSN.
 876          */
 877         if (!amsdu || last_subframe)
 878                 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);
 879
 880         spin_unlock_bh(&buffer->lock);
 881         return true;
 882
 883 drop:
 884         kfree_skb(skb);
 885         spin_unlock_bh(&buffer->lock);
 886         return true;
 887 }
 888
 889 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
 890                                     u32 reorder_data, u8 baid)
 891 {
 892         unsigned long now = jiffies;
 893         unsigned long timeout;
 894         struct iwl_mvm_baid_data *data;
 895
 896         rcu_read_lock();
 897
 898         data = rcu_dereference(mvm->baid_map[baid]);
 899         if (!data) {
 900                 IWL_DEBUG_RX(mvm,
 901                              "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
 902                               baid, reorder_data);
 903                 goto out;
 904         }
 905
 906         if (!data->timeout)
 907                 goto out;
 908
 909         timeout = data->timeout;
 910         /*
 911          * Do not update last rx all the time to avoid cache bouncing
 912          * between the rx queues.
 913          * Update it every timeout. Worst case is the session will
 914          * expire after ~ 2 * timeout, which doesn't matter that much.
 915          */
 916         if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
 917                 /* Update is atomic */
 918                 data->last_rx = now;
 919
 920 out:
 921         rcu_read_unlock();
 922 }
 923
 924 static void iwl_mvm_flip_address(u8 *addr)
 925 {
 926         int i;
 927         u8 mac_addr[ETH_ALEN];
 928
 929         for (i = 0; i < ETH_ALEN; i++)
 930                 mac_addr[i] = addr[ETH_ALEN - i - 1];
 931         ether_addr_copy(addr, mac_addr);
 932 }
 933
 934 struct iwl_mvm_rx_phy_data {
 935         enum iwl_rx_phy_info_type info_type;
 936         __le32 d0, d1, d2, d3;
 937         __le16 d4;
 938 };
 939
 940 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
 941                                      struct iwl_mvm_rx_phy_data *phy_data,
 942                                      u32 rate_n_flags,
 943                                      struct ieee80211_radiotap_he_mu *he_mu)
 944 {
 945         u32 phy_data2 = le32_to_cpu(phy_data->d2);
 946         u32 phy_data3 = le32_to_cpu(phy_data->d3);
 947         u16 phy_data4 = le16_to_cpu(phy_data->d4);
 948
 949         if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
 950                 he_mu->flags1 |=
 951                         cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
 952                                     IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
 953
 954                 he_mu->flags1 |=
 955                         le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
 956                                                    phy_data4),
 957                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
 958
 959                 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
 960                                              phy_data2);
 961                 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
 962                                              phy_data3);
 963                 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
 964                                              phy_data2);
 965                 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
 966                                              phy_data3);
 967         }
 968
 969         if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
 970             (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) != RATE_MCS_CHAN_WIDTH_20) {
 971                 he_mu->flags1 |=
 972                         cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
 973                                     IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
 974
 975                 he_mu->flags2 |=
 976                         le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
 977                                                    phy_data4),
 978                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
 979
 980                 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
 981                                              phy_data2);
 982                 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
 983                                              phy_data3);
 984                 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
 985                                              phy_data2);
 986                 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
 987                                              phy_data3);
 988         }
 989 }
 990
 991 static void
 992 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
 993                                u32 rate_n_flags,
 994                                struct ieee80211_radiotap_he *he,
 995                                struct ieee80211_radiotap_he_mu *he_mu,
 996                                struct ieee80211_rx_status *rx_status)
 997 {
 998         /*
 999          * Unfortunately, we have to leave the mac80211 data
1000          * incorrect for the case that we receive an HE-MU
1001          * transmission and *don't* have the HE phy data (due
1002          * to the bits being used for TSF). This shouldn't
1003          * happen though as management frames where we need
1004          * the TSF/timers are not be transmitted in HE-MU.
1005          */
1006         u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1007         u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1008         u8 offs = 0;
1009
1010         rx_status->bw = RATE_INFO_BW_HE_RU;
1011
1012         he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1013
1014         switch (ru) {
1015         case 0 ... 36:
1016                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1017                 offs = ru;
1018                 break;
1019         case 37 ... 52:
1020                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1021                 offs = ru - 37;
1022                 break;
1023         case 53 ... 60:
1024                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1025                 offs = ru - 53;
1026                 break;
1027         case 61 ... 64:
1028                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1029                 offs = ru - 61;
1030                 break;
1031         case 65 ... 66:
1032                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1033                 offs = ru - 65;
1034                 break;
1035         case 67:
1036                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1037                 break;
1038         case 68:
1039                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1040                 break;
1041         }
1042         he->data2 |= le16_encode_bits(offs,
1043                                       IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1044         he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1045                                  IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1046         if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1047                 he->data2 |=
1048                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1049
1050 #define CHECK_BW(bw) \
1051         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1052                      RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1053         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1054                      RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1055         CHECK_BW(20);
1056         CHECK_BW(40);
1057         CHECK_BW(80);
1058         CHECK_BW(160);
1059
1060         if (he_mu)
1061                 he_mu->flags2 |=
1062                         le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1063                                                    rate_n_flags),
1064                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1065         else if (he_type == RATE_MCS_HE_TYPE_TRIG)
1066                 he->data6 |=
1067                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1068                         le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1069                                                    rate_n_flags),
1070                                          IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1071 }
1072
1073 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1074                                        struct iwl_mvm_rx_phy_data *phy_data,
1075                                        struct ieee80211_radiotap_he *he,
1076                                        struct ieee80211_radiotap_he_mu *he_mu,
1077                                        struct ieee80211_rx_status *rx_status,
1078                                        u32 rate_n_flags, int queue)
1079 {
1080         switch (phy_data->info_type) {
1081         case IWL_RX_PHY_INFO_TYPE_NONE:
1082         case IWL_RX_PHY_INFO_TYPE_CCK:
1083         case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1084         case IWL_RX_PHY_INFO_TYPE_HT:
1085         case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1086         case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1087                 return;
1088         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1089                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1090                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1091                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1092                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1093                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1094                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1095                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1096                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1097                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1098                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1099                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1100                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1101                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1102                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1103                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1104                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1105                 /* fall through */
1106         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1107         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1108         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1109         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1110                 /* HE common */
1111                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1112                                          IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1113                                          IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1114                 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1115                                          IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1116                                          IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1117                                          IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1118                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1119                                                             IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1120                                               IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1121                 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1122                     phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1123                         he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1124                         he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1125                                                             IWL_RX_PHY_DATA0_HE_UPLINK),
1126                                                       IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1127                 }
1128                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1129                                                             IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1130                                               IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1131                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1132                                                             IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1133                                               IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1134                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1135                                                             IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1136                                               IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1137                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1138                                                             IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1139                                               IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1140                 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1141                                                             IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1142                                               IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1143                 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1144                                                             IWL_RX_PHY_DATA0_HE_DOPPLER),
1145                                               IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1146                 break;
1147         }
1148
1149         switch (phy_data->info_type) {
1150         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1151         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1152         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1153                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1154                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1155                                                             IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1156                                               IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1157                 break;
1158         default:
1159                 /* nothing here */
1160                 break;
1161         }
1162
1163         switch (phy_data->info_type) {
1164         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1165                 he_mu->flags1 |=
1166                         le16_encode_bits(le16_get_bits(phy_data->d4,
1167                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1168                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1169                 he_mu->flags1 |=
1170                         le16_encode_bits(le16_get_bits(phy_data->d4,
1171                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1172                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1173                 he_mu->flags2 |=
1174                         le16_encode_bits(le16_get_bits(phy_data->d4,
1175                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1176                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1177                 iwl_mvm_decode_he_mu_ext(mvm, phy_data, rate_n_flags, he_mu);
1178                 /* fall through */
1179         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1180                 he_mu->flags2 |=
1181                         le16_encode_bits(le32_get_bits(phy_data->d1,
1182                                                        IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1183                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1184                 he_mu->flags2 |=
1185                         le16_encode_bits(le32_get_bits(phy_data->d1,
1186                                                        IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1187                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1188                 /* fall through */
1189         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1190         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1191                 iwl_mvm_decode_he_phy_ru_alloc(phy_data, rate_n_flags,
1192                                                he, he_mu, rx_status);
1193                 break;
1194         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1195                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1196                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1197                                                             IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1198                                               IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1199                 break;
1200         default:
1201                 /* nothing */
1202                 break;
1203         }
1204 }
1205
1206 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1207                           struct iwl_mvm_rx_phy_data *phy_data,
1208                           u32 rate_n_flags, u16 phy_info, int queue)
1209 {
1210         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1211         struct ieee80211_radiotap_he *he = NULL;
1212         struct ieee80211_radiotap_he_mu *he_mu = NULL;
1213         u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1214         u8 stbc, ltf;
1215         static const struct ieee80211_radiotap_he known = {
1216                 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1217                                      IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1218                                      IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1219                                      IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1220                 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1221                                      IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1222         };
1223         static const struct ieee80211_radiotap_he_mu mu_known = {
1224                 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1225                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1226                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1227                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1228                 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1229                                       IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1230         };
1231
1232         he = skb_put_data(skb, &known, sizeof(known));
1233         rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1234
1235         if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1236             phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1237                 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1238                 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1239         }
1240
1241         /* report the AMPDU-EOF bit on single frames */
1242         if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1243                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1244                 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1245                 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1246                         rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1247         }
1248
1249         if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1250                 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1251                                            rate_n_flags, queue);
1252
1253         /* update aggregation data for monitor sake on default queue */
1254         if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1255             (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1256                 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1257
1258                 /* toggle is switched whenever new aggregation starts */
1259                 if (toggle_bit != mvm->ampdu_toggle) {
1260                         rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1261                         if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1262                                 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1263                 }
1264         }
1265
1266         if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1267             rate_n_flags & RATE_MCS_HE_106T_MSK) {
1268                 rx_status->bw = RATE_INFO_BW_HE_RU;
1269                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1270         }
1271
1272         /* actually data is filled in mac80211 */
1273         if (he_type == RATE_MCS_HE_TYPE_SU ||
1274             he_type == RATE_MCS_HE_TYPE_EXT_SU)
1275                 he->data1 |=
1276                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1277
1278         stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS;
1279         rx_status->nss =
1280                 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1281                                         RATE_VHT_MCS_NSS_POS) + 1;
1282         rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1283         rx_status->encoding = RX_ENC_HE;
1284         rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1285         if (rate_n_flags & RATE_MCS_BF_MSK)
1286                 rx_status->enc_flags |= RX_ENC_FLAG_BF;
1287
1288         rx_status->he_dcm =
1289                 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
1290
1291 #define CHECK_TYPE(F)                                                   \
1292         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F !=        \
1293                      (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1294
1295         CHECK_TYPE(SU);
1296         CHECK_TYPE(EXT_SU);
1297         CHECK_TYPE(MU);
1298         CHECK_TYPE(TRIG);
1299
1300         he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1301
1302         if (rate_n_flags & RATE_MCS_BF_MSK)
1303                 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1304
1305         switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1306                 RATE_MCS_HE_GI_LTF_POS) {
1307         case 0:
1308                 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1309                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1310                 else
1311                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1312                 if (he_type == RATE_MCS_HE_TYPE_MU)
1313                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1314                 else
1315                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1316                 break;
1317         case 1:
1318                 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1319                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1320                 else
1321                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1322                 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1323                 break;
1324         case 2:
1325                 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1326                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1327                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1328                 } else {
1329                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1330                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1331                 }
1332                 break;
1333         case 3:
1334                 if ((he_type == RATE_MCS_HE_TYPE_SU ||
1335                      he_type == RATE_MCS_HE_TYPE_EXT_SU) &&
1336                     rate_n_flags & RATE_MCS_SGI_MSK)
1337                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1338                 else
1339                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1340                 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1341                 break;
1342         }
1343
1344         he->data5 |= le16_encode_bits(ltf,
1345                                       IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1346 }
1347
1348 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1349                                 struct iwl_mvm_rx_phy_data *phy_data)
1350 {
1351         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1352         struct ieee80211_radiotap_lsig *lsig;
1353
1354         switch (phy_data->info_type) {
1355         case IWL_RX_PHY_INFO_TYPE_HT:
1356         case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1357         case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1358         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1359         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1360         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1361         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1362         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1363                 lsig = skb_put(skb, sizeof(*lsig));
1364                 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1365                 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1366                                                              IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1367                                                IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1368                 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1369                 break;
1370         default:
1371                 break;
1372         }
1373 }
1374
1375 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
1376                         struct iwl_rx_cmd_buffer *rxb, int queue)
1377 {
1378         struct ieee80211_rx_status *rx_status;
1379         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1380         struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
1381         struct ieee80211_hdr *hdr;
1382         u32 len = le16_to_cpu(desc->mpdu_len);
1383         u32 rate_n_flags, gp2_on_air_rise;
1384         u16 phy_info = le16_to_cpu(desc->phy_info);
1385         struct ieee80211_sta *sta = NULL;
1386         struct sk_buff *skb;
1387         u8 crypt_len = 0, channel, energy_a, energy_b;
1388         size_t desc_size;
1389         struct iwl_mvm_rx_phy_data phy_data = {
1390                 .d4 = desc->phy_data4,
1391                 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1392         };
1393         bool csi = false;
1394
1395         if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1396                 return;
1397
1398         if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
1399                 rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
1400                 channel = desc->v3.channel;
1401                 gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
1402                 energy_a = desc->v3.energy_a;
1403                 energy_b = desc->v3.energy_b;
1404                 desc_size = sizeof(*desc);
1405
1406                 phy_data.d0 = desc->v3.phy_data0;
1407                 phy_data.d1 = desc->v3.phy_data1;
1408                 phy_data.d2 = desc->v3.phy_data2;
1409                 phy_data.d3 = desc->v3.phy_data3;
1410         } else {
1411                 rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
1412                 channel = desc->v1.channel;
1413                 gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
1414                 energy_a = desc->v1.energy_a;
1415                 energy_b = desc->v1.energy_b;
1416                 desc_size = IWL_RX_DESC_SIZE_V1;
1417
1418                 phy_data.d0 = desc->v1.phy_data0;
1419                 phy_data.d1 = desc->v1.phy_data1;
1420                 phy_data.d2 = desc->v1.phy_data2;
1421                 phy_data.d3 = desc->v1.phy_data3;
1422         }
1423
1424         if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1425                 phy_data.info_type =
1426                         le32_get_bits(phy_data.d1,
1427                                       IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1428
1429         hdr = (void *)(pkt->data + desc_size);
1430         /* Dont use dev_alloc_skb(), we'll have enough headroom once
1431          * ieee80211_hdr pulled.
1432          */
1433         skb = alloc_skb(128, GFP_ATOMIC);
1434         if (!skb) {
1435                 IWL_ERR(mvm, "alloc_skb failed\n");
1436                 return;
1437         }
1438
1439         if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
1440                 /*
1441                  * If the device inserted padding it means that (it thought)
1442                  * the 802.11 header wasn't a multiple of 4 bytes long. In
1443                  * this case, reserve two bytes at the start of the SKB to
1444                  * align the payload properly in case we end up copying it.
1445                  */
1446                 skb_reserve(skb, 2);
1447         }
1448
1449         rx_status = IEEE80211_SKB_RXCB(skb);
1450
1451         /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1452         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1453         case RATE_MCS_CHAN_WIDTH_20:
1454                 break;
1455         case RATE_MCS_CHAN_WIDTH_40:
1456                 rx_status->bw = RATE_INFO_BW_40;
1457                 break;
1458         case RATE_MCS_CHAN_WIDTH_80:
1459                 rx_status->bw = RATE_INFO_BW_80;
1460                 break;
1461         case RATE_MCS_CHAN_WIDTH_160:
1462                 rx_status->bw = RATE_INFO_BW_160;
1463                 break;
1464         }
1465
1466         if (rate_n_flags & RATE_MCS_HE_MSK)
1467                 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1468                               phy_info, queue);
1469
1470         iwl_mvm_decode_lsig(skb, &phy_data);
1471
1472         rx_status = IEEE80211_SKB_RXCB(skb);
1473
1474         if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, phy_info, desc,
1475                               le32_to_cpu(pkt->len_n_flags), queue,
1476                               &crypt_len)) {
1477                 kfree_skb(skb);
1478                 return;
1479         }
1480
1481         /*
1482          * Keep packets with CRC errors (and with overrun) for monitor mode
1483          * (otherwise the firmware discards them) but mark them as bad.
1484          */
1485         if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) ||
1486             !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
1487                 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
1488                              le16_to_cpu(desc->status));
1489                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
1490         }
1491         /* set the preamble flag if appropriate */
1492         if (rate_n_flags & RATE_MCS_CCK_MSK &&
1493             phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
1494                 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1495
1496         if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
1497                 u64 tsf_on_air_rise;
1498
1499                 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
1500                         tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
1501                 else
1502                         tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
1503
1504                 rx_status->mactime = tsf_on_air_rise;
1505                 /* TSF as indicated by the firmware is at INA time */
1506                 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
1507         }
1508
1509         rx_status->device_timestamp = gp2_on_air_rise;
1510         rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1511                 NL80211_BAND_2GHZ;
1512         rx_status->freq = ieee80211_channel_to_frequency(channel,
1513                                                          rx_status->band);
1514         iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1515                                     energy_b);
1516
1517         /* update aggregation data for monitor sake on default queue */
1518         if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1519                 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1520
1521                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1522                 /*
1523                  * Toggle is switched whenever new aggregation starts. Make
1524                  * sure ampdu_reference is never 0 so we can later use it to
1525                  * see if the frame was really part of an A-MPDU or not.
1526                  */
1527                 if (toggle_bit != mvm->ampdu_toggle) {
1528                         mvm->ampdu_ref++;
1529                         if (mvm->ampdu_ref == 0)
1530                                 mvm->ampdu_ref++;
1531                         mvm->ampdu_toggle = toggle_bit;
1532                 }
1533                 rx_status->ampdu_reference = mvm->ampdu_ref;
1534         }
1535
1536         if (unlikely(mvm->monitor_on))
1537                 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
1538
1539         rcu_read_lock();
1540
1541         if (desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
1542                 u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK;
1543
1544                 if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) {
1545                         sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
1546                         if (IS_ERR(sta))
1547                                 sta = NULL;
1548                 }
1549         } else if (!is_multicast_ether_addr(hdr->addr2)) {
1550                 /*
1551                  * This is fine since we prevent two stations with the same
1552                  * address from being added.
1553                  */
1554                 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
1555         }
1556
1557         if (sta) {
1558                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1559                 struct ieee80211_vif *tx_blocked_vif =
1560                         rcu_dereference(mvm->csa_tx_blocked_vif);
1561                 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
1562                                IWL_RX_MPDU_REORDER_BAID_MASK) >>
1563                                IWL_RX_MPDU_REORDER_BAID_SHIFT);
1564                 struct iwl_fw_dbg_trigger_tlv *trig;
1565                 struct ieee80211_vif *vif = mvmsta->vif;
1566
1567                 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
1568                     !is_multicast_ether_addr(hdr->addr1) &&
1569                     ieee80211_is_data(hdr->frame_control) &&
1570                     time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
1571                         schedule_delayed_work(&mvm->tcm.work, 0);
1572
1573                 /*
1574                  * We have tx blocked stations (with CS bit). If we heard
1575                  * frames from a blocked station on a new channel we can
1576                  * TX to it again.
1577                  */
1578                 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
1579                         struct iwl_mvm_vif *mvmvif =
1580                                 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1581
1582                         if (mvmvif->csa_target_freq == rx_status->freq)
1583                                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
1584                                                                  false);
1585                 }
1586
1587                 rs_update_last_rssi(mvm, mvmsta, rx_status);
1588
1589                 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
1590                                              ieee80211_vif_to_wdev(vif),
1591                                              FW_DBG_TRIGGER_RSSI);
1592
1593                 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
1594                         struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
1595                         s32 rssi;
1596
1597                         rssi_trig = (void *)trig->data;
1598                         rssi = le32_to_cpu(rssi_trig->rssi);
1599
1600                         if (rx_status->signal < rssi)
1601                                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1602                                                         NULL);
1603                 }
1604
1605                 if (ieee80211_is_data(hdr->frame_control))
1606                         iwl_mvm_rx_csum(sta, skb, desc);
1607
1608                 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
1609                         kfree_skb(skb);
1610                         goto out;
1611                 }
1612
1613                 /*
1614                  * Our hardware de-aggregates AMSDUs but copies the mac header
1615                  * as it to the de-aggregated MPDUs. We need to turn off the
1616                  * AMSDU bit in the QoS control ourselves.
1617                  * In addition, HW reverses addr3 and addr4 - reverse it back.
1618                  */
1619                 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
1620                     !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
1621                         u8 *qc = ieee80211_get_qos_ctl(hdr);
1622
1623                         *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1624
1625                         if (mvm->trans->cfg->device_family ==
1626                             IWL_DEVICE_FAMILY_9000) {
1627                                 iwl_mvm_flip_address(hdr->addr3);
1628
1629                                 if (ieee80211_has_a4(hdr->frame_control))
1630                                         iwl_mvm_flip_address(hdr->addr4);
1631                         }
1632                 }
1633                 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
1634                         u32 reorder_data = le32_to_cpu(desc->reorder_data);
1635
1636                         iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
1637                 }
1638         }
1639
1640         if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1641             rate_n_flags & RATE_MCS_SGI_MSK)
1642                 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1643         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1644                 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1645         if (rate_n_flags & RATE_MCS_LDPC_MSK)
1646                 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1647         if (rate_n_flags & RATE_MCS_HT_MSK) {
1648                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1649                                 RATE_MCS_STBC_POS;
1650                 rx_status->encoding = RX_ENC_HT;
1651                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1652                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1653         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1654                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1655                                 RATE_MCS_STBC_POS;
1656                 rx_status->nss =
1657                         ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1658                                                 RATE_VHT_MCS_NSS_POS) + 1;
1659                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1660                 rx_status->encoding = RX_ENC_VHT;
1661                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1662                 if (rate_n_flags & RATE_MCS_BF_MSK)
1663                         rx_status->enc_flags |= RX_ENC_FLAG_BF;
1664         } else if (!(rate_n_flags & RATE_MCS_HE_MSK)) {
1665                 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1666                                                                rx_status->band);
1667
1668                 if (WARN(rate < 0 || rate > 0xFF,
1669                          "Invalid rate flags 0x%x, band %d,\n",
1670                          rate_n_flags, rx_status->band)) {
1671                         kfree_skb(skb);
1672                         goto out;
1673                 }
1674                 rx_status->rate_idx = rate;
1675         }
1676
1677         /* management stuff on default queue */
1678         if (!queue) {
1679                 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
1680                               ieee80211_is_probe_resp(hdr->frame_control)) &&
1681                              mvm->sched_scan_pass_all ==
1682                              SCHED_SCAN_PASS_ALL_ENABLED))
1683                         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
1684
1685                 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
1686                              ieee80211_is_probe_resp(hdr->frame_control)))
1687                         rx_status->boottime_ns = ktime_get_boottime_ns();
1688         }
1689
1690         if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
1691                 kfree_skb(skb);
1692                 goto out;
1693         }
1694
1695         if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc))
1696                 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue,
1697                                                 sta, csi);
1698 out:
1699         rcu_read_unlock();
1700 }
1701
1702 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
1703                                 struct iwl_rx_cmd_buffer *rxb, int queue)
1704 {
1705         struct ieee80211_rx_status *rx_status;
1706         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1707         struct iwl_rx_no_data *desc = (void *)pkt->data;
1708         u32 rate_n_flags = le32_to_cpu(desc->rate);
1709         u32 gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
1710         u32 rssi = le32_to_cpu(desc->rssi);
1711         u32 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
1712         u16 phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
1713         struct ieee80211_sta *sta = NULL;
1714         struct sk_buff *skb;
1715         u8 channel, energy_a, energy_b;
1716         struct iwl_mvm_rx_phy_data phy_data = {
1717                 .d0 = desc->phy_info[0],
1718                 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1719         };
1720
1721         if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1722                 return;
1723
1724         energy_a = (rssi & RX_NO_DATA_CHAIN_A_MSK) >> RX_NO_DATA_CHAIN_A_POS;
1725         energy_b = (rssi & RX_NO_DATA_CHAIN_B_MSK) >> RX_NO_DATA_CHAIN_B_POS;
1726         channel = (rssi & RX_NO_DATA_CHANNEL_MSK) >> RX_NO_DATA_CHANNEL_POS;
1727
1728         phy_data.info_type =
1729                 le32_get_bits(desc->phy_info[1],
1730                               IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1731
1732         /* Dont use dev_alloc_skb(), we'll have enough headroom once
1733          * ieee80211_hdr pulled.
1734          */
1735         skb = alloc_skb(128, GFP_ATOMIC);
1736         if (!skb) {
1737                 IWL_ERR(mvm, "alloc_skb failed\n");
1738                 return;
1739         }
1740
1741         rx_status = IEEE80211_SKB_RXCB(skb);
1742
1743         /* 0-length PSDU */
1744         rx_status->flag |= RX_FLAG_NO_PSDU;
1745
1746         switch (info_type) {
1747         case RX_NO_DATA_INFO_TYPE_NDP:
1748                 rx_status->zero_length_psdu_type =
1749                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
1750                 break;
1751         case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
1752         case RX_NO_DATA_INFO_TYPE_HE_TB_UNMATCHED:
1753                 rx_status->zero_length_psdu_type =
1754                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
1755                 break;
1756         default:
1757                 rx_status->zero_length_psdu_type =
1758                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
1759                 break;
1760         }
1761
1762         /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1763         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1764         case RATE_MCS_CHAN_WIDTH_20:
1765                 break;
1766         case RATE_MCS_CHAN_WIDTH_40:
1767                 rx_status->bw = RATE_INFO_BW_40;
1768                 break;
1769         case RATE_MCS_CHAN_WIDTH_80:
1770                 rx_status->bw = RATE_INFO_BW_80;
1771                 break;
1772         case RATE_MCS_CHAN_WIDTH_160:
1773                 rx_status->bw = RATE_INFO_BW_160;
1774                 break;
1775         }
1776
1777         if (rate_n_flags & RATE_MCS_HE_MSK)
1778                 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1779                               phy_info, queue);
1780
1781         iwl_mvm_decode_lsig(skb, &phy_data);
1782
1783         rx_status->device_timestamp = gp2_on_air_rise;
1784         rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1785                 NL80211_BAND_2GHZ;
1786         rx_status->freq = ieee80211_channel_to_frequency(channel,
1787                                                          rx_status->band);
1788         iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1789                                     energy_b);
1790
1791         rcu_read_lock();
1792
1793         if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1794             rate_n_flags & RATE_MCS_SGI_MSK)
1795                 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1796         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1797                 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1798         if (rate_n_flags & RATE_MCS_LDPC_MSK)
1799                 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1800         if (rate_n_flags & RATE_MCS_HT_MSK) {
1801                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1802                                 RATE_MCS_STBC_POS;
1803                 rx_status->encoding = RX_ENC_HT;
1804                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1805                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1806         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1807                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1808                                 RATE_MCS_STBC_POS;
1809                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1810                 rx_status->encoding = RX_ENC_VHT;
1811                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1812                 if (rate_n_flags & RATE_MCS_BF_MSK)
1813                         rx_status->enc_flags |= RX_ENC_FLAG_BF;
1814                 /*
1815                  * take the nss from the rx_vec since the rate_n_flags has
1816                  * only 2 bits for the nss which gives a max of 4 ss but
1817                  * there may be up to 8 spatial streams
1818                  */
1819                 rx_status->nss =
1820                         le32_get_bits(desc->rx_vec[0],
1821                                       RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
1822         } else if (rate_n_flags & RATE_MCS_HE_MSK) {
1823                 rx_status->nss =
1824                         le32_get_bits(desc->rx_vec[0],
1825                                       RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
1826         } else {
1827                 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1828                                                                rx_status->band);
1829
1830                 if (WARN(rate < 0 || rate > 0xFF,
1831                          "Invalid rate flags 0x%x, band %d,\n",
1832                          rate_n_flags, rx_status->band)) {
1833                         kfree_skb(skb);
1834                         goto out;
1835                 }
1836                 rx_status->rate_idx = rate;
1837         }
1838
1839         ieee80211_rx_napi(mvm->hw, sta, skb, napi);
1840 out:
1841         rcu_read_unlock();
1842 }
1843 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
1844                               struct iwl_rx_cmd_buffer *rxb, int queue)
1845 {
1846         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1847         struct iwl_frame_release *release = (void *)pkt->data;
1848         struct ieee80211_sta *sta;
1849         struct iwl_mvm_reorder_buffer *reorder_buf;
1850         struct iwl_mvm_baid_data *ba_data;
1851
1852         int baid = release->baid;
1853
1854         IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
1855                      release->baid, le16_to_cpu(release->nssn));
1856
1857         if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
1858                 return;
1859
1860         rcu_read_lock();
1861
1862         ba_data = rcu_dereference(mvm->baid_map[baid]);
1863         if (WARN_ON_ONCE(!ba_data))
1864                 goto out;
1865
1866         sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
1867         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
1868                 goto out;
1869
1870         reorder_buf = &ba_data->reorder_buf[queue];
1871
1872         spin_lock_bh(&reorder_buf->lock);
1873         iwl_mvm_release_frames(mvm, sta, napi, ba_data, reorder_buf,
1874                                le16_to_cpu(release->nssn));
1875         spin_unlock_bh(&reorder_buf->lock);
1876
1877 out:
1878         rcu_read_unlock();
1879 }