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 static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
 669                                               struct napi_struct *napi,
 670                                               u8 baid, u16 nssn, int queue)
 671 {
 672         struct ieee80211_sta *sta;
 673         struct iwl_mvm_reorder_buffer *reorder_buf;
 674         struct iwl_mvm_baid_data *ba_data;
 675
 676         IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
 677                      baid, nssn);
 678
 679         if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
 680                          baid >= ARRAY_SIZE(mvm->baid_map)))
 681                 return;
 682
 683         rcu_read_lock();
 684
 685         ba_data = rcu_dereference(mvm->baid_map[baid]);
 686         if (WARN_ON_ONCE(!ba_data))
 687                 goto out;
 688
 689         sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
 690         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
 691                 goto out;
 692
 693         reorder_buf = &ba_data->reorder_buf[queue];
 694
 695         spin_lock_bh(&reorder_buf->lock);
 696         iwl_mvm_release_frames(mvm, sta, napi, ba_data, reorder_buf, nssn);
 697         spin_unlock_bh(&reorder_buf->lock);
 698
 699 out:
 700         rcu_read_unlock();
 701 }
 702
 703 static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm,
 704                               struct napi_struct *napi, int queue,
 705                               const struct iwl_mvm_nssn_sync_data *data)
 706 {
 707         iwl_mvm_release_frames_from_notif(mvm, napi, data->baid,
 708                                           data->nssn, queue);
 709 }
 710
 711 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
 712                             struct iwl_rx_cmd_buffer *rxb, int queue)
 713 {
 714         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 715         struct iwl_rxq_sync_notification *notif;
 716         struct iwl_mvm_internal_rxq_notif *internal_notif;
 717
 718         notif = (void *)pkt->data;
 719         internal_notif = (void *)notif->payload;
 720
 721         if (internal_notif->sync &&
 722             mvm->queue_sync_cookie != internal_notif->cookie) {
 723                 WARN_ONCE(1, "Received expired RX queue sync message\n");
 724                 return;
 725         }
 726
 727         switch (internal_notif->type) {
 728         case IWL_MVM_RXQ_EMPTY:
 729                 break;
 730         case IWL_MVM_RXQ_NOTIF_DEL_BA:
 731                 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
 732                 break;
 733         case IWL_MVM_RXQ_NSSN_SYNC:
 734                 iwl_mvm_nssn_sync(mvm, napi, queue,
 735                                   (void *)internal_notif->data);
 736                 break;
 737         default:
 738                 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
 739         }
 740
 741         if (internal_notif->sync &&
 742             !atomic_dec_return(&mvm->queue_sync_counter))
 743                 wake_up(&mvm->rx_sync_waitq);
 744 }
 745
 746 /*
 747  * Returns true if the MPDU was buffered\dropped, false if it should be passed
 748  * to upper layer.
 749  */
 750 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
 751                             struct napi_struct *napi,
 752                             int queue,
 753                             struct ieee80211_sta *sta,
 754                             struct sk_buff *skb,
 755                             struct iwl_rx_mpdu_desc *desc)
 756 {
 757         struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
 758         struct iwl_mvm_sta *mvm_sta;
 759         struct iwl_mvm_baid_data *baid_data;
 760         struct iwl_mvm_reorder_buffer *buffer;
 761         struct sk_buff *tail;
 762         u32 reorder = le32_to_cpu(desc->reorder_data);
 763         bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
 764         bool last_subframe =
 765                 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
 766         u8 tid = ieee80211_get_tid(hdr);
 767         u8 sub_frame_idx = desc->amsdu_info &
 768                            IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
 769         struct iwl_mvm_reorder_buf_entry *entries;
 770         int index;
 771         u16 nssn, sn;
 772         u8 baid;
 773
 774         baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
 775                 IWL_RX_MPDU_REORDER_BAID_SHIFT;
 776
 777         /*
 778          * This also covers the case of receiving a Block Ack Request
 779          * outside a BA session; we'll pass it to mac80211 and that
 780          * then sends a delBA action frame.
 781          * This also covers pure monitor mode, in which case we won't
 782          * have any BA sessions.
 783          */
 784         if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
 785                 return false;
 786
 787         /* no sta yet */
 788         if (WARN_ONCE(IS_ERR_OR_NULL(sta),
 789                       "Got valid BAID without a valid station assigned\n"))
 790                 return false;
 791
 792         mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 793
 794         /* not a data packet or a bar */
 795         if (!ieee80211_is_back_req(hdr->frame_control) &&
 796             (!ieee80211_is_data_qos(hdr->frame_control) ||
 797              is_multicast_ether_addr(hdr->addr1)))
 798                 return false;
 799
 800         if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
 801                 return false;
 802
 803         baid_data = rcu_dereference(mvm->baid_map[baid]);
 804         if (!baid_data) {
 805                 IWL_DEBUG_RX(mvm,
 806                              "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
 807                               baid, reorder);
 808                 return false;
 809         }
 810
 811         if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id,
 812                  "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n",
 813                  baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id,
 814                  tid))
 815                 return false;
 816
 817         nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
 818         sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
 819                 IWL_RX_MPDU_REORDER_SN_SHIFT;
 820
 821         buffer = &baid_data->reorder_buf[queue];
 822         entries = &baid_data->entries[queue * baid_data->entries_per_queue];
 823
 824         spin_lock_bh(&buffer->lock);
 825
 826         if (!buffer->valid) {
 827                 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
 828                         spin_unlock_bh(&buffer->lock);
 829                         return false;
 830                 }
 831                 buffer->valid = true;
 832         }
 833
 834         if (ieee80211_is_back_req(hdr->frame_control)) {
 835                 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);
 836                 goto drop;
 837         }
 838
 839         /*
 840          * If there was a significant jump in the nssn - adjust.
 841          * If the SN is smaller than the NSSN it might need to first go into
 842          * the reorder buffer, in which case we just release up to it and the
 843          * rest of the function will take care of storing it and releasing up to
 844          * the nssn
 845          */
 846         if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
 847                                 buffer->buf_size) ||
 848             !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
 849                 u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;
 850
 851                 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
 852                                        min_sn);
 853         }
 854
 855         /* drop any oudated packets */
 856         if (ieee80211_sn_less(sn, buffer->head_sn))
 857                 goto drop;
 858
 859         /* release immediately if allowed by nssn and no stored frames */
 860         if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
 861                 if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
 862                                        buffer->buf_size) &&
 863                    (!amsdu || last_subframe))
 864                         buffer->head_sn = nssn;
 865                 /* No need to update AMSDU last SN - we are moving the head */
 866                 spin_unlock_bh(&buffer->lock);
 867                 return false;
 868         }
 869
 870         /*
 871          * release immediately if there are no stored frames, and the sn is
 872          * equal to the head.
 873          * This can happen due to reorder timer, where NSSN is behind head_sn.
 874          * When we released everything, and we got the next frame in the
 875          * sequence, according to the NSSN we can't release immediately,
 876          * while technically there is no hole and we can move forward.
 877          */
 878         if (!buffer->num_stored && sn == buffer->head_sn) {
 879                 if (!amsdu || last_subframe)
 880                         buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
 881                 /* No need to update AMSDU last SN - we are moving the head */
 882                 spin_unlock_bh(&buffer->lock);
 883                 return false;
 884         }
 885
 886         index = sn % buffer->buf_size;
 887
 888         /*
 889          * Check if we already stored this frame
 890          * As AMSDU is either received or not as whole, logic is simple:
 891          * If we have frames in that position in the buffer and the last frame
 892          * originated from AMSDU had a different SN then it is a retransmission.
 893          * If it is the same SN then if the subframe index is incrementing it
 894          * is the same AMSDU - otherwise it is a retransmission.
 895          */
 896         tail = skb_peek_tail(&entries[index].e.frames);
 897         if (tail && !amsdu)
 898                 goto drop;
 899         else if (tail && (sn != buffer->last_amsdu ||
 900                           buffer->last_sub_index >= sub_frame_idx))
 901                 goto drop;
 902
 903         /* put in reorder buffer */
 904         __skb_queue_tail(&entries[index].e.frames, skb);
 905         buffer->num_stored++;
 906         entries[index].e.reorder_time = jiffies;
 907
 908         if (amsdu) {
 909                 buffer->last_amsdu = sn;
 910                 buffer->last_sub_index = sub_frame_idx;
 911         }
 912
 913         /*
 914          * We cannot trust NSSN for AMSDU sub-frames that are not the last.
 915          * The reason is that NSSN advances on the first sub-frame, and may
 916          * cause the reorder buffer to advance before all the sub-frames arrive.
 917          * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
 918          * SN 1. NSSN for first sub frame will be 3 with the result of driver
 919          * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
 920          * already ahead and it will be dropped.
 921          * If the last sub-frame is not on this queue - we will get frame
 922          * release notification with up to date NSSN.
 923          */
 924         if (!amsdu || last_subframe)
 925                 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);
 926
 927         spin_unlock_bh(&buffer->lock);
 928         return true;
 929
 930 drop:
 931         kfree_skb(skb);
 932         spin_unlock_bh(&buffer->lock);
 933         return true;
 934 }
 935
 936 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
 937                                     u32 reorder_data, u8 baid)
 938 {
 939         unsigned long now = jiffies;
 940         unsigned long timeout;
 941         struct iwl_mvm_baid_data *data;
 942
 943         rcu_read_lock();
 944
 945         data = rcu_dereference(mvm->baid_map[baid]);
 946         if (!data) {
 947                 IWL_DEBUG_RX(mvm,
 948                              "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
 949                               baid, reorder_data);
 950                 goto out;
 951         }
 952
 953         if (!data->timeout)
 954                 goto out;
 955
 956         timeout = data->timeout;
 957         /*
 958          * Do not update last rx all the time to avoid cache bouncing
 959          * between the rx queues.
 960          * Update it every timeout. Worst case is the session will
 961          * expire after ~ 2 * timeout, which doesn't matter that much.
 962          */
 963         if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
 964                 /* Update is atomic */
 965                 data->last_rx = now;
 966
 967 out:
 968         rcu_read_unlock();
 969 }
 970
 971 static void iwl_mvm_flip_address(u8 *addr)
 972 {
 973         int i;
 974         u8 mac_addr[ETH_ALEN];
 975
 976         for (i = 0; i < ETH_ALEN; i++)
 977                 mac_addr[i] = addr[ETH_ALEN - i - 1];
 978         ether_addr_copy(addr, mac_addr);
 979 }
 980
 981 struct iwl_mvm_rx_phy_data {
 982         enum iwl_rx_phy_info_type info_type;
 983         __le32 d0, d1, d2, d3;
 984         __le16 d4;
 985 };
 986
 987 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
 988                                      struct iwl_mvm_rx_phy_data *phy_data,
 989                                      u32 rate_n_flags,
 990                                      struct ieee80211_radiotap_he_mu *he_mu)
 991 {
 992         u32 phy_data2 = le32_to_cpu(phy_data->d2);
 993         u32 phy_data3 = le32_to_cpu(phy_data->d3);
 994         u16 phy_data4 = le16_to_cpu(phy_data->d4);
 995
 996         if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
 997                 he_mu->flags1 |=
 998                         cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
 999                                     IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
1000
1001                 he_mu->flags1 |=
1002                         le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
1003                                                    phy_data4),
1004                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
1005
1006                 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
1007                                              phy_data2);
1008                 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
1009                                              phy_data3);
1010                 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
1011                                              phy_data2);
1012                 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
1013                                              phy_data3);
1014         }
1015
1016         if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
1017             (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) != RATE_MCS_CHAN_WIDTH_20) {
1018                 he_mu->flags1 |=
1019                         cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
1020                                     IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
1021
1022                 he_mu->flags2 |=
1023                         le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
1024                                                    phy_data4),
1025                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
1026
1027                 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
1028                                              phy_data2);
1029                 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
1030                                              phy_data3);
1031                 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
1032                                              phy_data2);
1033                 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
1034                                              phy_data3);
1035         }
1036 }
1037
1038 static void
1039 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
1040                                u32 rate_n_flags,
1041                                struct ieee80211_radiotap_he *he,
1042                                struct ieee80211_radiotap_he_mu *he_mu,
1043                                struct ieee80211_rx_status *rx_status)
1044 {
1045         /*
1046          * Unfortunately, we have to leave the mac80211 data
1047          * incorrect for the case that we receive an HE-MU
1048          * transmission and *don't* have the HE phy data (due
1049          * to the bits being used for TSF). This shouldn't
1050          * happen though as management frames where we need
1051          * the TSF/timers are not be transmitted in HE-MU.
1052          */
1053         u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1054         u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1055         u8 offs = 0;
1056
1057         rx_status->bw = RATE_INFO_BW_HE_RU;
1058
1059         he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1060
1061         switch (ru) {
1062         case 0 ... 36:
1063                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1064                 offs = ru;
1065                 break;
1066         case 37 ... 52:
1067                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1068                 offs = ru - 37;
1069                 break;
1070         case 53 ... 60:
1071                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1072                 offs = ru - 53;
1073                 break;
1074         case 61 ... 64:
1075                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1076                 offs = ru - 61;
1077                 break;
1078         case 65 ... 66:
1079                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1080                 offs = ru - 65;
1081                 break;
1082         case 67:
1083                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1084                 break;
1085         case 68:
1086                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1087                 break;
1088         }
1089         he->data2 |= le16_encode_bits(offs,
1090                                       IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1091         he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1092                                  IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1093         if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1094                 he->data2 |=
1095                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1096
1097 #define CHECK_BW(bw) \
1098         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1099                      RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1100         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1101                      RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1102         CHECK_BW(20);
1103         CHECK_BW(40);
1104         CHECK_BW(80);
1105         CHECK_BW(160);
1106
1107         if (he_mu)
1108                 he_mu->flags2 |=
1109                         le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1110                                                    rate_n_flags),
1111                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1112         else if (he_type == RATE_MCS_HE_TYPE_TRIG)
1113                 he->data6 |=
1114                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1115                         le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1116                                                    rate_n_flags),
1117                                          IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1118 }
1119
1120 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1121                                        struct iwl_mvm_rx_phy_data *phy_data,
1122                                        struct ieee80211_radiotap_he *he,
1123                                        struct ieee80211_radiotap_he_mu *he_mu,
1124                                        struct ieee80211_rx_status *rx_status,
1125                                        u32 rate_n_flags, int queue)
1126 {
1127         switch (phy_data->info_type) {
1128         case IWL_RX_PHY_INFO_TYPE_NONE:
1129         case IWL_RX_PHY_INFO_TYPE_CCK:
1130         case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1131         case IWL_RX_PHY_INFO_TYPE_HT:
1132         case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1133         case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1134                 return;
1135         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1136                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1137                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1138                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1139                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1140                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1141                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1142                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1143                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1144                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1145                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1146                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1147                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1148                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1149                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1150                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1151                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1152                 /* fall through */
1153         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1154         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1155         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1156         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1157                 /* HE common */
1158                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1159                                          IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1160                                          IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1161                 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1162                                          IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1163                                          IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1164                                          IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1165                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1166                                                             IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1167                                               IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1168                 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1169                     phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1170                         he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1171                         he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1172                                                             IWL_RX_PHY_DATA0_HE_UPLINK),
1173                                                       IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1174                 }
1175                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1176                                                             IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1177                                               IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1178                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1179                                                             IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1180                                               IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1181                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1182                                                             IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1183                                               IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1184                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1185                                                             IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1186                                               IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1187                 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1188                                                             IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1189                                               IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1190                 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1191                                                             IWL_RX_PHY_DATA0_HE_DOPPLER),
1192                                               IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1193                 break;
1194         }
1195
1196         switch (phy_data->info_type) {
1197         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1198         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1199         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1200                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1201                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1202                                                             IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1203                                               IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1204                 break;
1205         default:
1206                 /* nothing here */
1207                 break;
1208         }
1209
1210         switch (phy_data->info_type) {
1211         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1212                 he_mu->flags1 |=
1213                         le16_encode_bits(le16_get_bits(phy_data->d4,
1214                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1215                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1216                 he_mu->flags1 |=
1217                         le16_encode_bits(le16_get_bits(phy_data->d4,
1218                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1219                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1220                 he_mu->flags2 |=
1221                         le16_encode_bits(le16_get_bits(phy_data->d4,
1222                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1223                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1224                 iwl_mvm_decode_he_mu_ext(mvm, phy_data, rate_n_flags, he_mu);
1225                 /* fall through */
1226         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1227                 he_mu->flags2 |=
1228                         le16_encode_bits(le32_get_bits(phy_data->d1,
1229                                                        IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1230                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1231                 he_mu->flags2 |=
1232                         le16_encode_bits(le32_get_bits(phy_data->d1,
1233                                                        IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1234                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1235                 /* fall through */
1236         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1237         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1238                 iwl_mvm_decode_he_phy_ru_alloc(phy_data, rate_n_flags,
1239                                                he, he_mu, rx_status);
1240                 break;
1241         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1242                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1243                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1244                                                             IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1245                                               IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1246                 break;
1247         default:
1248                 /* nothing */
1249                 break;
1250         }
1251 }
1252
1253 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1254                           struct iwl_mvm_rx_phy_data *phy_data,
1255                           u32 rate_n_flags, u16 phy_info, int queue)
1256 {
1257         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1258         struct ieee80211_radiotap_he *he = NULL;
1259         struct ieee80211_radiotap_he_mu *he_mu = NULL;
1260         u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1261         u8 stbc, ltf;
1262         static const struct ieee80211_radiotap_he known = {
1263                 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1264                                      IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1265                                      IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1266                                      IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1267                 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1268                                      IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1269         };
1270         static const struct ieee80211_radiotap_he_mu mu_known = {
1271                 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1272                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1273                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1274                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1275                 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1276                                       IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1277         };
1278
1279         he = skb_put_data(skb, &known, sizeof(known));
1280         rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1281
1282         if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1283             phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1284                 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1285                 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1286         }
1287
1288         /* report the AMPDU-EOF bit on single frames */
1289         if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1290                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1291                 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1292                 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1293                         rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1294         }
1295
1296         if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1297                 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1298                                            rate_n_flags, queue);
1299
1300         /* update aggregation data for monitor sake on default queue */
1301         if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1302             (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1303                 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1304
1305                 /* toggle is switched whenever new aggregation starts */
1306                 if (toggle_bit != mvm->ampdu_toggle) {
1307                         rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1308                         if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1309                                 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1310                 }
1311         }
1312
1313         if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1314             rate_n_flags & RATE_MCS_HE_106T_MSK) {
1315                 rx_status->bw = RATE_INFO_BW_HE_RU;
1316                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1317         }
1318
1319         /* actually data is filled in mac80211 */
1320         if (he_type == RATE_MCS_HE_TYPE_SU ||
1321             he_type == RATE_MCS_HE_TYPE_EXT_SU)
1322                 he->data1 |=
1323                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1324
1325         stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS;
1326         rx_status->nss =
1327                 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1328                                         RATE_VHT_MCS_NSS_POS) + 1;
1329         rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1330         rx_status->encoding = RX_ENC_HE;
1331         rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1332         if (rate_n_flags & RATE_MCS_BF_MSK)
1333                 rx_status->enc_flags |= RX_ENC_FLAG_BF;
1334
1335         rx_status->he_dcm =
1336                 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
1337
1338 #define CHECK_TYPE(F)                                                   \
1339         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F !=        \
1340                      (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1341
1342         CHECK_TYPE(SU);
1343         CHECK_TYPE(EXT_SU);
1344         CHECK_TYPE(MU);
1345         CHECK_TYPE(TRIG);
1346
1347         he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1348
1349         if (rate_n_flags & RATE_MCS_BF_MSK)
1350                 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1351
1352         switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1353                 RATE_MCS_HE_GI_LTF_POS) {
1354         case 0:
1355                 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1356                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1357                 else
1358                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1359                 if (he_type == RATE_MCS_HE_TYPE_MU)
1360                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1361                 else
1362                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1363                 break;
1364         case 1:
1365                 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1366                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1367                 else
1368                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1369                 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1370                 break;
1371         case 2:
1372                 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1373                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1374                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1375                 } else {
1376                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1377                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1378                 }
1379                 break;
1380         case 3:
1381                 if ((he_type == RATE_MCS_HE_TYPE_SU ||
1382                      he_type == RATE_MCS_HE_TYPE_EXT_SU) &&
1383                     rate_n_flags & RATE_MCS_SGI_MSK)
1384                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1385                 else
1386                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1387                 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1388                 break;
1389         }
1390
1391         he->data5 |= le16_encode_bits(ltf,
1392                                       IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1393 }
1394
1395 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1396                                 struct iwl_mvm_rx_phy_data *phy_data)
1397 {
1398         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1399         struct ieee80211_radiotap_lsig *lsig;
1400
1401         switch (phy_data->info_type) {
1402         case IWL_RX_PHY_INFO_TYPE_HT:
1403         case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1404         case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1405         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1406         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1407         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1408         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1409         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1410                 lsig = skb_put(skb, sizeof(*lsig));
1411                 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1412                 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1413                                                              IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1414                                                IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1415                 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1416                 break;
1417         default:
1418                 break;
1419         }
1420 }
1421
1422 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
1423                         struct iwl_rx_cmd_buffer *rxb, int queue)
1424 {
1425         struct ieee80211_rx_status *rx_status;
1426         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1427         struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
1428         struct ieee80211_hdr *hdr;
1429         u32 len = le16_to_cpu(desc->mpdu_len);
1430         u32 rate_n_flags, gp2_on_air_rise;
1431         u16 phy_info = le16_to_cpu(desc->phy_info);
1432         struct ieee80211_sta *sta = NULL;
1433         struct sk_buff *skb;
1434         u8 crypt_len = 0, channel, energy_a, energy_b;
1435         size_t desc_size;
1436         struct iwl_mvm_rx_phy_data phy_data = {
1437                 .d4 = desc->phy_data4,
1438                 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1439         };
1440         bool csi = false;
1441
1442         if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1443                 return;
1444
1445         if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
1446                 rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
1447                 channel = desc->v3.channel;
1448                 gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
1449                 energy_a = desc->v3.energy_a;
1450                 energy_b = desc->v3.energy_b;
1451                 desc_size = sizeof(*desc);
1452
1453                 phy_data.d0 = desc->v3.phy_data0;
1454                 phy_data.d1 = desc->v3.phy_data1;
1455                 phy_data.d2 = desc->v3.phy_data2;
1456                 phy_data.d3 = desc->v3.phy_data3;
1457         } else {
1458                 rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
1459                 channel = desc->v1.channel;
1460                 gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
1461                 energy_a = desc->v1.energy_a;
1462                 energy_b = desc->v1.energy_b;
1463                 desc_size = IWL_RX_DESC_SIZE_V1;
1464
1465                 phy_data.d0 = desc->v1.phy_data0;
1466                 phy_data.d1 = desc->v1.phy_data1;
1467                 phy_data.d2 = desc->v1.phy_data2;
1468                 phy_data.d3 = desc->v1.phy_data3;
1469         }
1470
1471         if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1472                 phy_data.info_type =
1473                         le32_get_bits(phy_data.d1,
1474                                       IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1475
1476         hdr = (void *)(pkt->data + desc_size);
1477         /* Dont use dev_alloc_skb(), we'll have enough headroom once
1478          * ieee80211_hdr pulled.
1479          */
1480         skb = alloc_skb(128, GFP_ATOMIC);
1481         if (!skb) {
1482                 IWL_ERR(mvm, "alloc_skb failed\n");
1483                 return;
1484         }
1485
1486         if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
1487                 /*
1488                  * If the device inserted padding it means that (it thought)
1489                  * the 802.11 header wasn't a multiple of 4 bytes long. In
1490                  * this case, reserve two bytes at the start of the SKB to
1491                  * align the payload properly in case we end up copying it.
1492                  */
1493                 skb_reserve(skb, 2);
1494         }
1495
1496         rx_status = IEEE80211_SKB_RXCB(skb);
1497
1498         /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1499         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1500         case RATE_MCS_CHAN_WIDTH_20:
1501                 break;
1502         case RATE_MCS_CHAN_WIDTH_40:
1503                 rx_status->bw = RATE_INFO_BW_40;
1504                 break;
1505         case RATE_MCS_CHAN_WIDTH_80:
1506                 rx_status->bw = RATE_INFO_BW_80;
1507                 break;
1508         case RATE_MCS_CHAN_WIDTH_160:
1509                 rx_status->bw = RATE_INFO_BW_160;
1510                 break;
1511         }
1512
1513         if (rate_n_flags & RATE_MCS_HE_MSK)
1514                 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1515                               phy_info, queue);
1516
1517         iwl_mvm_decode_lsig(skb, &phy_data);
1518
1519         rx_status = IEEE80211_SKB_RXCB(skb);
1520
1521         if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, phy_info, desc,
1522                               le32_to_cpu(pkt->len_n_flags), queue,
1523                               &crypt_len)) {
1524                 kfree_skb(skb);
1525                 return;
1526         }
1527
1528         /*
1529          * Keep packets with CRC errors (and with overrun) for monitor mode
1530          * (otherwise the firmware discards them) but mark them as bad.
1531          */
1532         if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) ||
1533             !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
1534                 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
1535                              le16_to_cpu(desc->status));
1536                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
1537         }
1538         /* set the preamble flag if appropriate */
1539         if (rate_n_flags & RATE_MCS_CCK_MSK &&
1540             phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
1541                 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1542
1543         if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
1544                 u64 tsf_on_air_rise;
1545
1546                 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
1547                         tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
1548                 else
1549                         tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
1550
1551                 rx_status->mactime = tsf_on_air_rise;
1552                 /* TSF as indicated by the firmware is at INA time */
1553                 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
1554         }
1555
1556         rx_status->device_timestamp = gp2_on_air_rise;
1557         rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1558                 NL80211_BAND_2GHZ;
1559         rx_status->freq = ieee80211_channel_to_frequency(channel,
1560                                                          rx_status->band);
1561         iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1562                                     energy_b);
1563
1564         /* update aggregation data for monitor sake on default queue */
1565         if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1566                 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1567
1568                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1569                 /*
1570                  * Toggle is switched whenever new aggregation starts. Make
1571                  * sure ampdu_reference is never 0 so we can later use it to
1572                  * see if the frame was really part of an A-MPDU or not.
1573                  */
1574                 if (toggle_bit != mvm->ampdu_toggle) {
1575                         mvm->ampdu_ref++;
1576                         if (mvm->ampdu_ref == 0)
1577                                 mvm->ampdu_ref++;
1578                         mvm->ampdu_toggle = toggle_bit;
1579                 }
1580                 rx_status->ampdu_reference = mvm->ampdu_ref;
1581         }
1582
1583         if (unlikely(mvm->monitor_on))
1584                 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
1585
1586         rcu_read_lock();
1587
1588         if (desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
1589                 u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK;
1590
1591                 if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) {
1592                         sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
1593                         if (IS_ERR(sta))
1594                                 sta = NULL;
1595                 }
1596         } else if (!is_multicast_ether_addr(hdr->addr2)) {
1597                 /*
1598                  * This is fine since we prevent two stations with the same
1599                  * address from being added.
1600                  */
1601                 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
1602         }
1603
1604         if (sta) {
1605                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1606                 struct ieee80211_vif *tx_blocked_vif =
1607                         rcu_dereference(mvm->csa_tx_blocked_vif);
1608                 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
1609                                IWL_RX_MPDU_REORDER_BAID_MASK) >>
1610                                IWL_RX_MPDU_REORDER_BAID_SHIFT);
1611                 struct iwl_fw_dbg_trigger_tlv *trig;
1612                 struct ieee80211_vif *vif = mvmsta->vif;
1613
1614                 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
1615                     !is_multicast_ether_addr(hdr->addr1) &&
1616                     ieee80211_is_data(hdr->frame_control) &&
1617                     time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
1618                         schedule_delayed_work(&mvm->tcm.work, 0);
1619
1620                 /*
1621                  * We have tx blocked stations (with CS bit). If we heard
1622                  * frames from a blocked station on a new channel we can
1623                  * TX to it again.
1624                  */
1625                 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
1626                         struct iwl_mvm_vif *mvmvif =
1627                                 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1628
1629                         if (mvmvif->csa_target_freq == rx_status->freq)
1630                                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
1631                                                                  false);
1632                 }
1633
1634                 rs_update_last_rssi(mvm, mvmsta, rx_status);
1635
1636                 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
1637                                              ieee80211_vif_to_wdev(vif),
1638                                              FW_DBG_TRIGGER_RSSI);
1639
1640                 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
1641                         struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
1642                         s32 rssi;
1643
1644                         rssi_trig = (void *)trig->data;
1645                         rssi = le32_to_cpu(rssi_trig->rssi);
1646
1647                         if (rx_status->signal < rssi)
1648                                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1649                                                         NULL);
1650                 }
1651
1652                 if (ieee80211_is_data(hdr->frame_control))
1653                         iwl_mvm_rx_csum(sta, skb, desc);
1654
1655                 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
1656                         kfree_skb(skb);
1657                         goto out;
1658                 }
1659
1660                 /*
1661                  * Our hardware de-aggregates AMSDUs but copies the mac header
1662                  * as it to the de-aggregated MPDUs. We need to turn off the
1663                  * AMSDU bit in the QoS control ourselves.
1664                  * In addition, HW reverses addr3 and addr4 - reverse it back.
1665                  */
1666                 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
1667                     !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
1668                         u8 *qc = ieee80211_get_qos_ctl(hdr);
1669
1670                         *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1671
1672                         if (mvm->trans->cfg->device_family ==
1673                             IWL_DEVICE_FAMILY_9000) {
1674                                 iwl_mvm_flip_address(hdr->addr3);
1675
1676                                 if (ieee80211_has_a4(hdr->frame_control))
1677                                         iwl_mvm_flip_address(hdr->addr4);
1678                         }
1679                 }
1680                 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
1681                         u32 reorder_data = le32_to_cpu(desc->reorder_data);
1682
1683                         iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
1684                 }
1685         }
1686
1687         if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1688             rate_n_flags & RATE_MCS_SGI_MSK)
1689                 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1690         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1691                 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1692         if (rate_n_flags & RATE_MCS_LDPC_MSK)
1693                 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1694         if (rate_n_flags & RATE_MCS_HT_MSK) {
1695                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1696                                 RATE_MCS_STBC_POS;
1697                 rx_status->encoding = RX_ENC_HT;
1698                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1699                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1700         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1701                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1702                                 RATE_MCS_STBC_POS;
1703                 rx_status->nss =
1704                         ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1705                                                 RATE_VHT_MCS_NSS_POS) + 1;
1706                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1707                 rx_status->encoding = RX_ENC_VHT;
1708                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1709                 if (rate_n_flags & RATE_MCS_BF_MSK)
1710                         rx_status->enc_flags |= RX_ENC_FLAG_BF;
1711         } else if (!(rate_n_flags & RATE_MCS_HE_MSK)) {
1712                 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1713                                                                rx_status->band);
1714
1715                 if (WARN(rate < 0 || rate > 0xFF,
1716                          "Invalid rate flags 0x%x, band %d,\n",
1717                          rate_n_flags, rx_status->band)) {
1718                         kfree_skb(skb);
1719                         goto out;
1720                 }
1721                 rx_status->rate_idx = rate;
1722         }
1723
1724         /* management stuff on default queue */
1725         if (!queue) {
1726                 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
1727                               ieee80211_is_probe_resp(hdr->frame_control)) &&
1728                              mvm->sched_scan_pass_all ==
1729                              SCHED_SCAN_PASS_ALL_ENABLED))
1730                         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
1731
1732                 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
1733                              ieee80211_is_probe_resp(hdr->frame_control)))
1734                         rx_status->boottime_ns = ktime_get_boottime_ns();
1735         }
1736
1737         if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
1738                 kfree_skb(skb);
1739                 goto out;
1740         }
1741
1742         if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc))
1743                 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue,
1744                                                 sta, csi);
1745 out:
1746         rcu_read_unlock();
1747 }
1748
1749 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
1750                                 struct iwl_rx_cmd_buffer *rxb, int queue)
1751 {
1752         struct ieee80211_rx_status *rx_status;
1753         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1754         struct iwl_rx_no_data *desc = (void *)pkt->data;
1755         u32 rate_n_flags = le32_to_cpu(desc->rate);
1756         u32 gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
1757         u32 rssi = le32_to_cpu(desc->rssi);
1758         u32 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
1759         u16 phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
1760         struct ieee80211_sta *sta = NULL;
1761         struct sk_buff *skb;
1762         u8 channel, energy_a, energy_b;
1763         struct iwl_mvm_rx_phy_data phy_data = {
1764                 .d0 = desc->phy_info[0],
1765                 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1766         };
1767
1768         if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1769                 return;
1770
1771         energy_a = (rssi & RX_NO_DATA_CHAIN_A_MSK) >> RX_NO_DATA_CHAIN_A_POS;
1772         energy_b = (rssi & RX_NO_DATA_CHAIN_B_MSK) >> RX_NO_DATA_CHAIN_B_POS;
1773         channel = (rssi & RX_NO_DATA_CHANNEL_MSK) >> RX_NO_DATA_CHANNEL_POS;
1774
1775         phy_data.info_type =
1776                 le32_get_bits(desc->phy_info[1],
1777                               IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1778
1779         /* Dont use dev_alloc_skb(), we'll have enough headroom once
1780          * ieee80211_hdr pulled.
1781          */
1782         skb = alloc_skb(128, GFP_ATOMIC);
1783         if (!skb) {
1784                 IWL_ERR(mvm, "alloc_skb failed\n");
1785                 return;
1786         }
1787
1788         rx_status = IEEE80211_SKB_RXCB(skb);
1789
1790         /* 0-length PSDU */
1791         rx_status->flag |= RX_FLAG_NO_PSDU;
1792
1793         switch (info_type) {
1794         case RX_NO_DATA_INFO_TYPE_NDP:
1795                 rx_status->zero_length_psdu_type =
1796                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
1797                 break;
1798         case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
1799         case RX_NO_DATA_INFO_TYPE_HE_TB_UNMATCHED:
1800                 rx_status->zero_length_psdu_type =
1801                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
1802                 break;
1803         default:
1804                 rx_status->zero_length_psdu_type =
1805                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
1806                 break;
1807         }
1808
1809         /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1810         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1811         case RATE_MCS_CHAN_WIDTH_20:
1812                 break;
1813         case RATE_MCS_CHAN_WIDTH_40:
1814                 rx_status->bw = RATE_INFO_BW_40;
1815                 break;
1816         case RATE_MCS_CHAN_WIDTH_80:
1817                 rx_status->bw = RATE_INFO_BW_80;
1818                 break;
1819         case RATE_MCS_CHAN_WIDTH_160:
1820                 rx_status->bw = RATE_INFO_BW_160;
1821                 break;
1822         }
1823
1824         if (rate_n_flags & RATE_MCS_HE_MSK)
1825                 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1826                               phy_info, queue);
1827
1828         iwl_mvm_decode_lsig(skb, &phy_data);
1829
1830         rx_status->device_timestamp = gp2_on_air_rise;
1831         rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1832                 NL80211_BAND_2GHZ;
1833         rx_status->freq = ieee80211_channel_to_frequency(channel,
1834                                                          rx_status->band);
1835         iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1836                                     energy_b);
1837
1838         rcu_read_lock();
1839
1840         if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1841             rate_n_flags & RATE_MCS_SGI_MSK)
1842                 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1843         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1844                 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1845         if (rate_n_flags & RATE_MCS_LDPC_MSK)
1846                 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1847         if (rate_n_flags & RATE_MCS_HT_MSK) {
1848                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1849                                 RATE_MCS_STBC_POS;
1850                 rx_status->encoding = RX_ENC_HT;
1851                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1852                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1853         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1854                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1855                                 RATE_MCS_STBC_POS;
1856                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1857                 rx_status->encoding = RX_ENC_VHT;
1858                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1859                 if (rate_n_flags & RATE_MCS_BF_MSK)
1860                         rx_status->enc_flags |= RX_ENC_FLAG_BF;
1861                 /*
1862                  * take the nss from the rx_vec since the rate_n_flags has
1863                  * only 2 bits for the nss which gives a max of 4 ss but
1864                  * there may be up to 8 spatial streams
1865                  */
1866                 rx_status->nss =
1867                         le32_get_bits(desc->rx_vec[0],
1868                                       RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
1869         } else if (rate_n_flags & RATE_MCS_HE_MSK) {
1870                 rx_status->nss =
1871                         le32_get_bits(desc->rx_vec[0],
1872                                       RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
1873         } else {
1874                 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1875                                                                rx_status->band);
1876
1877                 if (WARN(rate < 0 || rate > 0xFF,
1878                          "Invalid rate flags 0x%x, band %d,\n",
1879                          rate_n_flags, rx_status->band)) {
1880                         kfree_skb(skb);
1881                         goto out;
1882                 }
1883                 rx_status->rate_idx = rate;
1884         }
1885
1886         ieee80211_rx_napi(mvm->hw, sta, skb, napi);
1887 out:
1888         rcu_read_unlock();
1889 }
1890
1891 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
1892                               struct iwl_rx_cmd_buffer *rxb, int queue)
1893 {
1894         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1895         struct iwl_frame_release *release = (void *)pkt->data;
1896
1897         iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
1898                                           le16_to_cpu(release->nssn), queue);
1899 }