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, bool async)
 467 {
 468         u8 buf[sizeof(struct iwl_rxq_sync_cmd) +
 469                sizeof(struct iwl_mvm_rss_sync_notif)];
 470         struct iwl_rxq_sync_cmd *cmd = (void *)buf;
 471         u32 data_size = sizeof(*cmd) + count;
 472         int ret;
 473
 474         /*
 475          * size must be a multiple of DWORD
 476          * Ensure we don't overflow buf
 477          */
 478         if (WARN_ON(count & 3 ||
 479                     count > sizeof(struct iwl_mvm_rss_sync_notif)))
 480                 return -EINVAL;
 481
 482         cmd->rxq_mask = cpu_to_le32(rxq_mask);
 483         cmd->count =  cpu_to_le32(count);
 484         cmd->flags = 0;
 485         memcpy(cmd->payload, data, count);
 486
 487         ret = iwl_mvm_send_cmd_pdu(mvm,
 488                                    WIDE_ID(DATA_PATH_GROUP,
 489                                            TRIGGER_RX_QUEUES_NOTIF_CMD),
 490                                    async ? CMD_ASYNC : 0, data_size, cmd);
 491
 492         return ret;
 493 }
 494
 495 /*
 496  * Returns true if sn2 - buffer_size < sn1 < sn2.
 497  * To be used only in order to compare reorder buffer head with NSSN.
 498  * We fully trust NSSN unless it is behind us due to reorder timeout.
 499  * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN.
 500  */
 501 static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size)
 502 {
 503         return ieee80211_sn_less(sn1, sn2) &&
 504                !ieee80211_sn_less(sn1, sn2 - buffer_size);
 505 }
 506
 507 static void iwl_mvm_sync_nssn(struct iwl_mvm *mvm, u8 baid, u16 nssn)
 508 {
 509         struct iwl_mvm_rss_sync_notif notif = {
 510                 .metadata.type = IWL_MVM_RXQ_NSSN_SYNC,
 511                 .metadata.sync = 0,
 512                 .nssn_sync.baid = baid,
 513                 .nssn_sync.nssn = nssn,
 514         };
 515
 516         iwl_mvm_sync_rx_queues_internal(mvm, (void *)&notif, sizeof(notif));
 517 }
 518
 519 #define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10)
 520
 521 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
 522                                    struct ieee80211_sta *sta,
 523                                    struct napi_struct *napi,
 524                                    struct iwl_mvm_baid_data *baid_data,
 525                                    struct iwl_mvm_reorder_buffer *reorder_buf,
 526                                    u16 nssn, bool sync_rss)
 527 {
 528         struct iwl_mvm_reorder_buf_entry *entries =
 529                 &baid_data->entries[reorder_buf->queue *
 530                                     baid_data->entries_per_queue];
 531         u16 ssn = reorder_buf->head_sn;
 532
 533         lockdep_assert_held(&reorder_buf->lock);
 534
 535         /* ignore nssn smaller than head sn - this can happen due to timeout */
 536         if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
 537                 goto set_timer;
 538
 539         while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
 540                 int index = ssn % reorder_buf->buf_size;
 541                 struct sk_buff_head *skb_list = &entries[index].e.frames;
 542                 struct sk_buff *skb;
 543
 544                 ssn = ieee80211_sn_inc(ssn);
 545                 if (sync_rss && (ssn == 2048 || ssn == 0))
 546                         iwl_mvm_sync_nssn(mvm, baid_data->baid, ssn);
 547
 548                 /*
 549                  * Empty the list. Will have more than one frame for A-MSDU.
 550                  * Empty list is valid as well since nssn indicates frames were
 551                  * received.
 552                  */
 553                 while ((skb = __skb_dequeue(skb_list))) {
 554                         iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
 555                                                         reorder_buf->queue,
 556                                                         sta, false);
 557                         reorder_buf->num_stored--;
 558                 }
 559         }
 560         reorder_buf->head_sn = nssn;
 561
 562 set_timer:
 563         if (reorder_buf->num_stored && !reorder_buf->removed) {
 564                 u16 index = reorder_buf->head_sn % reorder_buf->buf_size;
 565
 566                 while (skb_queue_empty(&entries[index].e.frames))
 567                         index = (index + 1) % reorder_buf->buf_size;
 568                 /* modify timer to match next frame's expiration time */
 569                 mod_timer(&reorder_buf->reorder_timer,
 570                           entries[index].e.reorder_time + 1 +
 571                           RX_REORDER_BUF_TIMEOUT_MQ);
 572         } else {
 573                 del_timer(&reorder_buf->reorder_timer);
 574         }
 575 }
 576
 577 void iwl_mvm_reorder_timer_expired(struct timer_list *t)
 578 {
 579         struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer);
 580         struct iwl_mvm_baid_data *baid_data =
 581                 iwl_mvm_baid_data_from_reorder_buf(buf);
 582         struct iwl_mvm_reorder_buf_entry *entries =
 583                 &baid_data->entries[buf->queue * baid_data->entries_per_queue];
 584         int i;
 585         u16 sn = 0, index = 0;
 586         bool expired = false;
 587         bool cont = false;
 588
 589         spin_lock(&buf->lock);
 590
 591         if (!buf->num_stored || buf->removed) {
 592                 spin_unlock(&buf->lock);
 593                 return;
 594         }
 595
 596         for (i = 0; i < buf->buf_size ; i++) {
 597                 index = (buf->head_sn + i) % buf->buf_size;
 598
 599                 if (skb_queue_empty(&entries[index].e.frames)) {
 600                         /*
 601                          * If there is a hole and the next frame didn't expire
 602                          * we want to break and not advance SN
 603                          */
 604                         cont = false;
 605                         continue;
 606                 }
 607                 if (!cont &&
 608                     !time_after(jiffies, entries[index].e.reorder_time +
 609                                          RX_REORDER_BUF_TIMEOUT_MQ))
 610                         break;
 611
 612                 expired = true;
 613                 /* continue until next hole after this expired frames */
 614                 cont = true;
 615                 sn = ieee80211_sn_add(buf->head_sn, i + 1);
 616         }
 617
 618         if (expired) {
 619                 struct ieee80211_sta *sta;
 620                 struct iwl_mvm_sta *mvmsta;
 621                 u8 sta_id = baid_data->sta_id;
 622
 623                 rcu_read_lock();
 624                 sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]);
 625                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
 626
 627                 /* SN is set to the last expired frame + 1 */
 628                 IWL_DEBUG_HT(buf->mvm,
 629                              "Releasing expired frames for sta %u, sn %d\n",
 630                              sta_id, sn);
 631                 iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif,
 632                                                      sta, baid_data->tid);
 633                 iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data,
 634                                        buf, sn, true);
 635                 rcu_read_unlock();
 636         } else {
 637                 /*
 638                  * If no frame expired and there are stored frames, index is now
 639                  * pointing to the first unexpired frame - modify timer
 640                  * accordingly to this frame.
 641                  */
 642                 mod_timer(&buf->reorder_timer,
 643                           entries[index].e.reorder_time +
 644                           1 + RX_REORDER_BUF_TIMEOUT_MQ);
 645         }
 646         spin_unlock(&buf->lock);
 647 }
 648
 649 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
 650                            struct iwl_mvm_delba_data *data)
 651 {
 652         struct iwl_mvm_baid_data *ba_data;
 653         struct ieee80211_sta *sta;
 654         struct iwl_mvm_reorder_buffer *reorder_buf;
 655         u8 baid = data->baid;
 656
 657         if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
 658                 return;
 659
 660         rcu_read_lock();
 661
 662         ba_data = rcu_dereference(mvm->baid_map[baid]);
 663         if (WARN_ON_ONCE(!ba_data))
 664                 goto out;
 665
 666         sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
 667         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
 668                 goto out;
 669
 670         reorder_buf = &ba_data->reorder_buf[queue];
 671
 672         /* release all frames that are in the reorder buffer to the stack */
 673         spin_lock_bh(&reorder_buf->lock);
 674         iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
 675                                ieee80211_sn_add(reorder_buf->head_sn,
 676                                                 reorder_buf->buf_size),
 677                                false);
 678         spin_unlock_bh(&reorder_buf->lock);
 679         del_timer_sync(&reorder_buf->reorder_timer);
 680
 681 out:
 682         rcu_read_unlock();
 683 }
 684
 685 static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
 686                                               struct napi_struct *napi,
 687                                               u8 baid, u16 nssn, int queue)
 688 {
 689         struct ieee80211_sta *sta;
 690         struct iwl_mvm_reorder_buffer *reorder_buf;
 691         struct iwl_mvm_baid_data *ba_data;
 692
 693         IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
 694                      baid, nssn);
 695
 696         if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
 697                          baid >= ARRAY_SIZE(mvm->baid_map)))
 698                 return;
 699
 700         rcu_read_lock();
 701
 702         ba_data = rcu_dereference(mvm->baid_map[baid]);
 703         if (WARN_ON_ONCE(!ba_data))
 704                 goto out;
 705
 706         sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
 707         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
 708                 goto out;
 709
 710         reorder_buf = &ba_data->reorder_buf[queue];
 711
 712         spin_lock_bh(&reorder_buf->lock);
 713         iwl_mvm_release_frames(mvm, sta, napi, ba_data,
 714                                reorder_buf, nssn, false);
 715         spin_unlock_bh(&reorder_buf->lock);
 716
 717 out:
 718         rcu_read_unlock();
 719 }
 720
 721 static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm,
 722                               struct napi_struct *napi, int queue,
 723                               const struct iwl_mvm_nssn_sync_data *data)
 724 {
 725         iwl_mvm_release_frames_from_notif(mvm, napi, data->baid,
 726                                           data->nssn, queue);
 727 }
 728
 729 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
 730                             struct iwl_rx_cmd_buffer *rxb, int queue)
 731 {
 732         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 733         struct iwl_rxq_sync_notification *notif;
 734         struct iwl_mvm_internal_rxq_notif *internal_notif;
 735
 736         notif = (void *)pkt->data;
 737         internal_notif = (void *)notif->payload;
 738
 739         if (internal_notif->sync &&
 740             mvm->queue_sync_cookie != internal_notif->cookie) {
 741                 WARN_ONCE(1, "Received expired RX queue sync message\n");
 742                 return;
 743         }
 744
 745         switch (internal_notif->type) {
 746         case IWL_MVM_RXQ_EMPTY:
 747                 break;
 748         case IWL_MVM_RXQ_NOTIF_DEL_BA:
 749                 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
 750                 break;
 751         case IWL_MVM_RXQ_NSSN_SYNC:
 752                 iwl_mvm_nssn_sync(mvm, napi, queue,
 753                                   (void *)internal_notif->data);
 754                 break;
 755         default:
 756                 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
 757         }
 758
 759         if (internal_notif->sync &&
 760             !atomic_dec_return(&mvm->queue_sync_counter))
 761                 wake_up(&mvm->rx_sync_waitq);
 762 }
 763
 764 /*
 765  * Returns true if the MPDU was buffered\dropped, false if it should be passed
 766  * to upper layer.
 767  */
 768 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
 769                             struct napi_struct *napi,
 770                             int queue,
 771                             struct ieee80211_sta *sta,
 772                             struct sk_buff *skb,
 773                             struct iwl_rx_mpdu_desc *desc)
 774 {
 775         struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
 776         struct iwl_mvm_sta *mvm_sta;
 777         struct iwl_mvm_baid_data *baid_data;
 778         struct iwl_mvm_reorder_buffer *buffer;
 779         struct sk_buff *tail;
 780         u32 reorder = le32_to_cpu(desc->reorder_data);
 781         bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
 782         bool last_subframe =
 783                 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
 784         u8 tid = ieee80211_get_tid(hdr);
 785         u8 sub_frame_idx = desc->amsdu_info &
 786                            IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
 787         struct iwl_mvm_reorder_buf_entry *entries;
 788         int index;
 789         u16 nssn, sn;
 790         u8 baid;
 791
 792         baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
 793                 IWL_RX_MPDU_REORDER_BAID_SHIFT;
 794
 795         /*
 796          * This also covers the case of receiving a Block Ack Request
 797          * outside a BA session; we'll pass it to mac80211 and that
 798          * then sends a delBA action frame.
 799          * This also covers pure monitor mode, in which case we won't
 800          * have any BA sessions.
 801          */
 802         if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
 803                 return false;
 804
 805         /* no sta yet */
 806         if (WARN_ONCE(IS_ERR_OR_NULL(sta),
 807                       "Got valid BAID without a valid station assigned\n"))
 808                 return false;
 809
 810         mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 811
 812         /* not a data packet or a bar */
 813         if (!ieee80211_is_back_req(hdr->frame_control) &&
 814             (!ieee80211_is_data_qos(hdr->frame_control) ||
 815              is_multicast_ether_addr(hdr->addr1)))
 816                 return false;
 817
 818         if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
 819                 return false;
 820
 821         baid_data = rcu_dereference(mvm->baid_map[baid]);
 822         if (!baid_data) {
 823                 IWL_DEBUG_RX(mvm,
 824                              "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
 825                               baid, reorder);
 826                 return false;
 827         }
 828
 829         if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id,
 830                  "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n",
 831                  baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id,
 832                  tid))
 833                 return false;
 834
 835         nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
 836         sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
 837                 IWL_RX_MPDU_REORDER_SN_SHIFT;
 838
 839         buffer = &baid_data->reorder_buf[queue];
 840         entries = &baid_data->entries[queue * baid_data->entries_per_queue];
 841
 842         spin_lock_bh(&buffer->lock);
 843
 844         if (!buffer->valid) {
 845                 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
 846                         spin_unlock_bh(&buffer->lock);
 847                         return false;
 848                 }
 849                 buffer->valid = true;
 850         }
 851
 852         if (ieee80211_is_back_req(hdr->frame_control)) {
 853                 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
 854                                        buffer, nssn, false);
 855                 goto drop;
 856         }
 857
 858         /*
 859          * If there was a significant jump in the nssn - adjust.
 860          * If the SN is smaller than the NSSN it might need to first go into
 861          * the reorder buffer, in which case we just release up to it and the
 862          * rest of the function will take care of storing it and releasing up to
 863          * the nssn.
 864          * This should not happen. This queue has been lagging and it should
 865          * have been updated by a IWL_MVM_RXQ_NSSN_SYNC notification. Be nice
 866          * and update the other queues.
 867          */
 868         if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
 869                                 buffer->buf_size) ||
 870             !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
 871                 u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;
 872
 873                 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
 874                                        min_sn, true);
 875         }
 876
 877         /* drop any oudated packets */
 878         if (ieee80211_sn_less(sn, buffer->head_sn))
 879                 goto drop;
 880
 881         /* release immediately if allowed by nssn and no stored frames */
 882         if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
 883                 if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
 884                                        buffer->buf_size) &&
 885                    (!amsdu || last_subframe)) {
 886                         /*
 887                          * If we crossed the 2048 or 0 SN, notify all the
 888                          * queues. This is done in order to avoid having a
 889                          * head_sn that lags behind for too long. When that
 890                          * happens, we can get to a situation where the head_sn
 891                          * is within the interval [nssn - buf_size : nssn]
 892                          * which will make us think that the nssn is a packet
 893                          * that we already freed because of the reordering
 894                          * buffer and we will ignore it. So maintain the
 895                          * head_sn somewhat updated across all the queues:
 896                          * when it crosses 0 and 2048.
 897                          */
 898                         if (sn == 2048 || sn == 0)
 899                                 iwl_mvm_sync_nssn(mvm, baid, sn);
 900                         buffer->head_sn = nssn;
 901                 }
 902                 /* No need to update AMSDU last SN - we are moving the head */
 903                 spin_unlock_bh(&buffer->lock);
 904                 return false;
 905         }
 906
 907         /*
 908          * release immediately if there are no stored frames, and the sn is
 909          * equal to the head.
 910          * This can happen due to reorder timer, where NSSN is behind head_sn.
 911          * When we released everything, and we got the next frame in the
 912          * sequence, according to the NSSN we can't release immediately,
 913          * while technically there is no hole and we can move forward.
 914          */
 915         if (!buffer->num_stored && sn == buffer->head_sn) {
 916                 if (!amsdu || last_subframe) {
 917                         if (sn == 2048 || sn == 0)
 918                                 iwl_mvm_sync_nssn(mvm, baid, sn);
 919                         buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
 920                 }
 921                 /* No need to update AMSDU last SN - we are moving the head */
 922                 spin_unlock_bh(&buffer->lock);
 923                 return false;
 924         }
 925
 926         index = sn % buffer->buf_size;
 927
 928         /*
 929          * Check if we already stored this frame
 930          * As AMSDU is either received or not as whole, logic is simple:
 931          * If we have frames in that position in the buffer and the last frame
 932          * originated from AMSDU had a different SN then it is a retransmission.
 933          * If it is the same SN then if the subframe index is incrementing it
 934          * is the same AMSDU - otherwise it is a retransmission.
 935          */
 936         tail = skb_peek_tail(&entries[index].e.frames);
 937         if (tail && !amsdu)
 938                 goto drop;
 939         else if (tail && (sn != buffer->last_amsdu ||
 940                           buffer->last_sub_index >= sub_frame_idx))
 941                 goto drop;
 942
 943         /* put in reorder buffer */
 944         __skb_queue_tail(&entries[index].e.frames, skb);
 945         buffer->num_stored++;
 946         entries[index].e.reorder_time = jiffies;
 947
 948         if (amsdu) {
 949                 buffer->last_amsdu = sn;
 950                 buffer->last_sub_index = sub_frame_idx;
 951         }
 952
 953         /*
 954          * We cannot trust NSSN for AMSDU sub-frames that are not the last.
 955          * The reason is that NSSN advances on the first sub-frame, and may
 956          * cause the reorder buffer to advance before all the sub-frames arrive.
 957          * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
 958          * SN 1. NSSN for first sub frame will be 3 with the result of driver
 959          * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
 960          * already ahead and it will be dropped.
 961          * If the last sub-frame is not on this queue - we will get frame
 962          * release notification with up to date NSSN.
 963          */
 964         if (!amsdu || last_subframe)
 965                 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
 966                                        buffer, nssn, true);
 967
 968         spin_unlock_bh(&buffer->lock);
 969         return true;
 970
 971 drop:
 972         kfree_skb(skb);
 973         spin_unlock_bh(&buffer->lock);
 974         return true;
 975 }
 976
 977 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
 978                                     u32 reorder_data, u8 baid)
 979 {
 980         unsigned long now = jiffies;
 981         unsigned long timeout;
 982         struct iwl_mvm_baid_data *data;
 983
 984         rcu_read_lock();
 985
 986         data = rcu_dereference(mvm->baid_map[baid]);
 987         if (!data) {
 988                 IWL_DEBUG_RX(mvm,
 989                              "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
 990                               baid, reorder_data);
 991                 goto out;
 992         }
 993
 994         if (!data->timeout)
 995                 goto out;
 996
 997         timeout = data->timeout;
 998         /*
 999          * Do not update last rx all the time to avoid cache bouncing
1000          * between the rx queues.
1001          * Update it every timeout. Worst case is the session will
1002          * expire after ~ 2 * timeout, which doesn't matter that much.
1003          */
1004         if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
1005                 /* Update is atomic */
1006                 data->last_rx = now;
1007
1008 out:
1009         rcu_read_unlock();
1010 }
1011
1012 static void iwl_mvm_flip_address(u8 *addr)
1013 {
1014         int i;
1015         u8 mac_addr[ETH_ALEN];
1016
1017         for (i = 0; i < ETH_ALEN; i++)
1018                 mac_addr[i] = addr[ETH_ALEN - i - 1];
1019         ether_addr_copy(addr, mac_addr);
1020 }
1021
1022 struct iwl_mvm_rx_phy_data {
1023         enum iwl_rx_phy_info_type info_type;
1024         __le32 d0, d1, d2, d3;
1025         __le16 d4;
1026 };
1027
1028 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
1029                                      struct iwl_mvm_rx_phy_data *phy_data,
1030                                      u32 rate_n_flags,
1031                                      struct ieee80211_radiotap_he_mu *he_mu)
1032 {
1033         u32 phy_data2 = le32_to_cpu(phy_data->d2);
1034         u32 phy_data3 = le32_to_cpu(phy_data->d3);
1035         u16 phy_data4 = le16_to_cpu(phy_data->d4);
1036
1037         if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
1038                 he_mu->flags1 |=
1039                         cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
1040                                     IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
1041
1042                 he_mu->flags1 |=
1043                         le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
1044                                                    phy_data4),
1045                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
1046
1047                 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
1048                                              phy_data2);
1049                 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
1050                                              phy_data3);
1051                 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
1052                                              phy_data2);
1053                 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
1054                                              phy_data3);
1055         }
1056
1057         if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
1058             (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) != RATE_MCS_CHAN_WIDTH_20) {
1059                 he_mu->flags1 |=
1060                         cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
1061                                     IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
1062
1063                 he_mu->flags2 |=
1064                         le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
1065                                                    phy_data4),
1066                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
1067
1068                 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
1069                                              phy_data2);
1070                 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
1071                                              phy_data3);
1072                 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
1073                                              phy_data2);
1074                 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
1075                                              phy_data3);
1076         }
1077 }
1078
1079 static void
1080 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
1081                                u32 rate_n_flags,
1082                                struct ieee80211_radiotap_he *he,
1083                                struct ieee80211_radiotap_he_mu *he_mu,
1084                                struct ieee80211_rx_status *rx_status)
1085 {
1086         /*
1087          * Unfortunately, we have to leave the mac80211 data
1088          * incorrect for the case that we receive an HE-MU
1089          * transmission and *don't* have the HE phy data (due
1090          * to the bits being used for TSF). This shouldn't
1091          * happen though as management frames where we need
1092          * the TSF/timers are not be transmitted in HE-MU.
1093          */
1094         u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1095         u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1096         u8 offs = 0;
1097
1098         rx_status->bw = RATE_INFO_BW_HE_RU;
1099
1100         he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1101
1102         switch (ru) {
1103         case 0 ... 36:
1104                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1105                 offs = ru;
1106                 break;
1107         case 37 ... 52:
1108                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1109                 offs = ru - 37;
1110                 break;
1111         case 53 ... 60:
1112                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1113                 offs = ru - 53;
1114                 break;
1115         case 61 ... 64:
1116                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1117                 offs = ru - 61;
1118                 break;
1119         case 65 ... 66:
1120                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1121                 offs = ru - 65;
1122                 break;
1123         case 67:
1124                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1125                 break;
1126         case 68:
1127                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1128                 break;
1129         }
1130         he->data2 |= le16_encode_bits(offs,
1131                                       IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1132         he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1133                                  IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1134         if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1135                 he->data2 |=
1136                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1137
1138 #define CHECK_BW(bw) \
1139         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1140                      RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1141         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1142                      RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1143         CHECK_BW(20);
1144         CHECK_BW(40);
1145         CHECK_BW(80);
1146         CHECK_BW(160);
1147
1148         if (he_mu)
1149                 he_mu->flags2 |=
1150                         le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1151                                                    rate_n_flags),
1152                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1153         else if (he_type == RATE_MCS_HE_TYPE_TRIG)
1154                 he->data6 |=
1155                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1156                         le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1157                                                    rate_n_flags),
1158                                          IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1159 }
1160
1161 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1162                                        struct iwl_mvm_rx_phy_data *phy_data,
1163                                        struct ieee80211_radiotap_he *he,
1164                                        struct ieee80211_radiotap_he_mu *he_mu,
1165                                        struct ieee80211_rx_status *rx_status,
1166                                        u32 rate_n_flags, int queue)
1167 {
1168         switch (phy_data->info_type) {
1169         case IWL_RX_PHY_INFO_TYPE_NONE:
1170         case IWL_RX_PHY_INFO_TYPE_CCK:
1171         case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1172         case IWL_RX_PHY_INFO_TYPE_HT:
1173         case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1174         case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1175                 return;
1176         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1177                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1178                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1179                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1180                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1181                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1182                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1183                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1184                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1185                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1186                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1187                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1188                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1189                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1190                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1191                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1192                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1193                 /* fall through */
1194         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1195         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1196         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1197         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1198                 /* HE common */
1199                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1200                                          IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1201                                          IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1202                 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1203                                          IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1204                                          IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1205                                          IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1206                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1207                                                             IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1208                                               IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1209                 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1210                     phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1211                         he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1212                         he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1213                                                             IWL_RX_PHY_DATA0_HE_UPLINK),
1214                                                       IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1215                 }
1216                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1217                                                             IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1218                                               IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1219                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1220                                                             IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1221                                               IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1222                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1223                                                             IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1224                                               IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1225                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1226                                                             IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1227                                               IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1228                 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1229                                                             IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1230                                               IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1231                 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1232                                                             IWL_RX_PHY_DATA0_HE_DOPPLER),
1233                                               IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1234                 break;
1235         }
1236
1237         switch (phy_data->info_type) {
1238         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1239         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1240         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1241                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1242                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1243                                                             IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1244                                               IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1245                 break;
1246         default:
1247                 /* nothing here */
1248                 break;
1249         }
1250
1251         switch (phy_data->info_type) {
1252         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1253                 he_mu->flags1 |=
1254                         le16_encode_bits(le16_get_bits(phy_data->d4,
1255                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1256                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1257                 he_mu->flags1 |=
1258                         le16_encode_bits(le16_get_bits(phy_data->d4,
1259                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1260                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1261                 he_mu->flags2 |=
1262                         le16_encode_bits(le16_get_bits(phy_data->d4,
1263                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1264                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1265                 iwl_mvm_decode_he_mu_ext(mvm, phy_data, rate_n_flags, he_mu);
1266                 /* fall through */
1267         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1268                 he_mu->flags2 |=
1269                         le16_encode_bits(le32_get_bits(phy_data->d1,
1270                                                        IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1271                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1272                 he_mu->flags2 |=
1273                         le16_encode_bits(le32_get_bits(phy_data->d1,
1274                                                        IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1275                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1276                 /* fall through */
1277         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1278         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1279                 iwl_mvm_decode_he_phy_ru_alloc(phy_data, rate_n_flags,
1280                                                he, he_mu, rx_status);
1281                 break;
1282         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1283                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1284                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1285                                                             IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1286                                               IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1287                 break;
1288         default:
1289                 /* nothing */
1290                 break;
1291         }
1292 }
1293
1294 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1295                           struct iwl_mvm_rx_phy_data *phy_data,
1296                           u32 rate_n_flags, u16 phy_info, int queue)
1297 {
1298         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1299         struct ieee80211_radiotap_he *he = NULL;
1300         struct ieee80211_radiotap_he_mu *he_mu = NULL;
1301         u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1302         u8 stbc, ltf;
1303         static const struct ieee80211_radiotap_he known = {
1304                 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1305                                      IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1306                                      IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1307                                      IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1308                 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1309                                      IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1310         };
1311         static const struct ieee80211_radiotap_he_mu mu_known = {
1312                 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1313                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1314                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1315                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1316                 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1317                                       IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1318         };
1319
1320         he = skb_put_data(skb, &known, sizeof(known));
1321         rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1322
1323         if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1324             phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1325                 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1326                 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1327         }
1328
1329         /* report the AMPDU-EOF bit on single frames */
1330         if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1331                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1332                 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1333                 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1334                         rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1335         }
1336
1337         if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1338                 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1339                                            rate_n_flags, queue);
1340
1341         /* update aggregation data for monitor sake on default queue */
1342         if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1343             (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1344                 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1345
1346                 /* toggle is switched whenever new aggregation starts */
1347                 if (toggle_bit != mvm->ampdu_toggle) {
1348                         rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1349                         if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1350                                 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1351                 }
1352         }
1353
1354         if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1355             rate_n_flags & RATE_MCS_HE_106T_MSK) {
1356                 rx_status->bw = RATE_INFO_BW_HE_RU;
1357                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1358         }
1359
1360         /* actually data is filled in mac80211 */
1361         if (he_type == RATE_MCS_HE_TYPE_SU ||
1362             he_type == RATE_MCS_HE_TYPE_EXT_SU)
1363                 he->data1 |=
1364                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1365
1366         stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS;
1367         rx_status->nss =
1368                 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1369                                         RATE_VHT_MCS_NSS_POS) + 1;
1370         rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1371         rx_status->encoding = RX_ENC_HE;
1372         rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1373         if (rate_n_flags & RATE_MCS_BF_MSK)
1374                 rx_status->enc_flags |= RX_ENC_FLAG_BF;
1375
1376         rx_status->he_dcm =
1377                 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
1378
1379 #define CHECK_TYPE(F)                                                   \
1380         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F !=        \
1381                      (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1382
1383         CHECK_TYPE(SU);
1384         CHECK_TYPE(EXT_SU);
1385         CHECK_TYPE(MU);
1386         CHECK_TYPE(TRIG);
1387
1388         he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1389
1390         if (rate_n_flags & RATE_MCS_BF_MSK)
1391                 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1392
1393         switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1394                 RATE_MCS_HE_GI_LTF_POS) {
1395         case 0:
1396                 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1397                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1398                 else
1399                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1400                 if (he_type == RATE_MCS_HE_TYPE_MU)
1401                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1402                 else
1403                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1404                 break;
1405         case 1:
1406                 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1407                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1408                 else
1409                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1410                 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1411                 break;
1412         case 2:
1413                 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1414                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1415                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1416                 } else {
1417                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1418                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1419                 }
1420                 break;
1421         case 3:
1422                 if ((he_type == RATE_MCS_HE_TYPE_SU ||
1423                      he_type == RATE_MCS_HE_TYPE_EXT_SU) &&
1424                     rate_n_flags & RATE_MCS_SGI_MSK)
1425                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1426                 else
1427                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1428                 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1429                 break;
1430         }
1431
1432         he->data5 |= le16_encode_bits(ltf,
1433                                       IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1434 }
1435
1436 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1437                                 struct iwl_mvm_rx_phy_data *phy_data)
1438 {
1439         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1440         struct ieee80211_radiotap_lsig *lsig;
1441
1442         switch (phy_data->info_type) {
1443         case IWL_RX_PHY_INFO_TYPE_HT:
1444         case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1445         case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1446         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1447         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1448         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1449         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1450         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1451                 lsig = skb_put(skb, sizeof(*lsig));
1452                 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1453                 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1454                                                              IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1455                                                IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1456                 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1457                 break;
1458         default:
1459                 break;
1460         }
1461 }
1462
1463 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
1464                         struct iwl_rx_cmd_buffer *rxb, int queue)
1465 {
1466         struct ieee80211_rx_status *rx_status;
1467         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1468         struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
1469         struct ieee80211_hdr *hdr;
1470         u32 len = le16_to_cpu(desc->mpdu_len);
1471         u32 rate_n_flags, gp2_on_air_rise;
1472         u16 phy_info = le16_to_cpu(desc->phy_info);
1473         struct ieee80211_sta *sta = NULL;
1474         struct sk_buff *skb;
1475         u8 crypt_len = 0, channel, energy_a, energy_b;
1476         size_t desc_size;
1477         struct iwl_mvm_rx_phy_data phy_data = {
1478                 .d4 = desc->phy_data4,
1479                 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1480         };
1481         bool csi = false;
1482
1483         if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1484                 return;
1485
1486         if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
1487                 rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
1488                 channel = desc->v3.channel;
1489                 gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
1490                 energy_a = desc->v3.energy_a;
1491                 energy_b = desc->v3.energy_b;
1492                 desc_size = sizeof(*desc);
1493
1494                 phy_data.d0 = desc->v3.phy_data0;
1495                 phy_data.d1 = desc->v3.phy_data1;
1496                 phy_data.d2 = desc->v3.phy_data2;
1497                 phy_data.d3 = desc->v3.phy_data3;
1498         } else {
1499                 rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
1500                 channel = desc->v1.channel;
1501                 gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
1502                 energy_a = desc->v1.energy_a;
1503                 energy_b = desc->v1.energy_b;
1504                 desc_size = IWL_RX_DESC_SIZE_V1;
1505
1506                 phy_data.d0 = desc->v1.phy_data0;
1507                 phy_data.d1 = desc->v1.phy_data1;
1508                 phy_data.d2 = desc->v1.phy_data2;
1509                 phy_data.d3 = desc->v1.phy_data3;
1510         }
1511
1512         if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1513                 phy_data.info_type =
1514                         le32_get_bits(phy_data.d1,
1515                                       IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1516
1517         hdr = (void *)(pkt->data + desc_size);
1518         /* Dont use dev_alloc_skb(), we'll have enough headroom once
1519          * ieee80211_hdr pulled.
1520          */
1521         skb = alloc_skb(128, GFP_ATOMIC);
1522         if (!skb) {
1523                 IWL_ERR(mvm, "alloc_skb failed\n");
1524                 return;
1525         }
1526
1527         if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
1528                 /*
1529                  * If the device inserted padding it means that (it thought)
1530                  * the 802.11 header wasn't a multiple of 4 bytes long. In
1531                  * this case, reserve two bytes at the start of the SKB to
1532                  * align the payload properly in case we end up copying it.
1533                  */
1534                 skb_reserve(skb, 2);
1535         }
1536
1537         rx_status = IEEE80211_SKB_RXCB(skb);
1538
1539         /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1540         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1541         case RATE_MCS_CHAN_WIDTH_20:
1542                 break;
1543         case RATE_MCS_CHAN_WIDTH_40:
1544                 rx_status->bw = RATE_INFO_BW_40;
1545                 break;
1546         case RATE_MCS_CHAN_WIDTH_80:
1547                 rx_status->bw = RATE_INFO_BW_80;
1548                 break;
1549         case RATE_MCS_CHAN_WIDTH_160:
1550                 rx_status->bw = RATE_INFO_BW_160;
1551                 break;
1552         }
1553
1554         if (rate_n_flags & RATE_MCS_HE_MSK)
1555                 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1556                               phy_info, queue);
1557
1558         iwl_mvm_decode_lsig(skb, &phy_data);
1559
1560         rx_status = IEEE80211_SKB_RXCB(skb);
1561
1562         if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, phy_info, desc,
1563                               le32_to_cpu(pkt->len_n_flags), queue,
1564                               &crypt_len)) {
1565                 kfree_skb(skb);
1566                 return;
1567         }
1568
1569         /*
1570          * Keep packets with CRC errors (and with overrun) for monitor mode
1571          * (otherwise the firmware discards them) but mark them as bad.
1572          */
1573         if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) ||
1574             !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
1575                 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
1576                              le16_to_cpu(desc->status));
1577                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
1578         }
1579         /* set the preamble flag if appropriate */
1580         if (rate_n_flags & RATE_MCS_CCK_MSK &&
1581             phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
1582                 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1583
1584         if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
1585                 u64 tsf_on_air_rise;
1586
1587                 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
1588                         tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
1589                 else
1590                         tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
1591
1592                 rx_status->mactime = tsf_on_air_rise;
1593                 /* TSF as indicated by the firmware is at INA time */
1594                 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
1595         }
1596
1597         rx_status->device_timestamp = gp2_on_air_rise;
1598         rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1599                 NL80211_BAND_2GHZ;
1600         rx_status->freq = ieee80211_channel_to_frequency(channel,
1601                                                          rx_status->band);
1602         iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1603                                     energy_b);
1604
1605         /* update aggregation data for monitor sake on default queue */
1606         if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1607                 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1608
1609                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1610                 /*
1611                  * Toggle is switched whenever new aggregation starts. Make
1612                  * sure ampdu_reference is never 0 so we can later use it to
1613                  * see if the frame was really part of an A-MPDU or not.
1614                  */
1615                 if (toggle_bit != mvm->ampdu_toggle) {
1616                         mvm->ampdu_ref++;
1617                         if (mvm->ampdu_ref == 0)
1618                                 mvm->ampdu_ref++;
1619                         mvm->ampdu_toggle = toggle_bit;
1620                 }
1621                 rx_status->ampdu_reference = mvm->ampdu_ref;
1622         }
1623
1624         if (unlikely(mvm->monitor_on))
1625                 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
1626
1627         rcu_read_lock();
1628
1629         if (desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
1630                 u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK;
1631
1632                 if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) {
1633                         sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
1634                         if (IS_ERR(sta))
1635                                 sta = NULL;
1636                 }
1637         } else if (!is_multicast_ether_addr(hdr->addr2)) {
1638                 /*
1639                  * This is fine since we prevent two stations with the same
1640                  * address from being added.
1641                  */
1642                 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
1643         }
1644
1645         if (sta) {
1646                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1647                 struct ieee80211_vif *tx_blocked_vif =
1648                         rcu_dereference(mvm->csa_tx_blocked_vif);
1649                 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
1650                                IWL_RX_MPDU_REORDER_BAID_MASK) >>
1651                                IWL_RX_MPDU_REORDER_BAID_SHIFT);
1652                 struct iwl_fw_dbg_trigger_tlv *trig;
1653                 struct ieee80211_vif *vif = mvmsta->vif;
1654
1655                 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
1656                     !is_multicast_ether_addr(hdr->addr1) &&
1657                     ieee80211_is_data(hdr->frame_control) &&
1658                     time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
1659                         schedule_delayed_work(&mvm->tcm.work, 0);
1660
1661                 /*
1662                  * We have tx blocked stations (with CS bit). If we heard
1663                  * frames from a blocked station on a new channel we can
1664                  * TX to it again.
1665                  */
1666                 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
1667                         struct iwl_mvm_vif *mvmvif =
1668                                 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1669
1670                         if (mvmvif->csa_target_freq == rx_status->freq)
1671                                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
1672                                                                  false);
1673                 }
1674
1675                 rs_update_last_rssi(mvm, mvmsta, rx_status);
1676
1677                 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
1678                                              ieee80211_vif_to_wdev(vif),
1679                                              FW_DBG_TRIGGER_RSSI);
1680
1681                 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
1682                         struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
1683                         s32 rssi;
1684
1685                         rssi_trig = (void *)trig->data;
1686                         rssi = le32_to_cpu(rssi_trig->rssi);
1687
1688                         if (rx_status->signal < rssi)
1689                                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1690                                                         NULL);
1691                 }
1692
1693                 if (ieee80211_is_data(hdr->frame_control))
1694                         iwl_mvm_rx_csum(sta, skb, desc);
1695
1696                 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
1697                         kfree_skb(skb);
1698                         goto out;
1699                 }
1700
1701                 /*
1702                  * Our hardware de-aggregates AMSDUs but copies the mac header
1703                  * as it to the de-aggregated MPDUs. We need to turn off the
1704                  * AMSDU bit in the QoS control ourselves.
1705                  * In addition, HW reverses addr3 and addr4 - reverse it back.
1706                  */
1707                 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
1708                     !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
1709                         u8 *qc = ieee80211_get_qos_ctl(hdr);
1710
1711                         *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1712
1713                         if (mvm->trans->cfg->device_family ==
1714                             IWL_DEVICE_FAMILY_9000) {
1715                                 iwl_mvm_flip_address(hdr->addr3);
1716
1717                                 if (ieee80211_has_a4(hdr->frame_control))
1718                                         iwl_mvm_flip_address(hdr->addr4);
1719                         }
1720                 }
1721                 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
1722                         u32 reorder_data = le32_to_cpu(desc->reorder_data);
1723
1724                         iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
1725                 }
1726         }
1727
1728         if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1729             rate_n_flags & RATE_MCS_SGI_MSK)
1730                 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1731         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1732                 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1733         if (rate_n_flags & RATE_MCS_LDPC_MSK)
1734                 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1735         if (rate_n_flags & RATE_MCS_HT_MSK) {
1736                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1737                                 RATE_MCS_STBC_POS;
1738                 rx_status->encoding = RX_ENC_HT;
1739                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1740                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1741         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1742                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1743                                 RATE_MCS_STBC_POS;
1744                 rx_status->nss =
1745                         ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1746                                                 RATE_VHT_MCS_NSS_POS) + 1;
1747                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1748                 rx_status->encoding = RX_ENC_VHT;
1749                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1750                 if (rate_n_flags & RATE_MCS_BF_MSK)
1751                         rx_status->enc_flags |= RX_ENC_FLAG_BF;
1752         } else if (!(rate_n_flags & RATE_MCS_HE_MSK)) {
1753                 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1754                                                                rx_status->band);
1755
1756                 if (WARN(rate < 0 || rate > 0xFF,
1757                          "Invalid rate flags 0x%x, band %d,\n",
1758                          rate_n_flags, rx_status->band)) {
1759                         kfree_skb(skb);
1760                         goto out;
1761                 }
1762                 rx_status->rate_idx = rate;
1763         }
1764
1765         /* management stuff on default queue */
1766         if (!queue) {
1767                 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
1768                               ieee80211_is_probe_resp(hdr->frame_control)) &&
1769                              mvm->sched_scan_pass_all ==
1770                              SCHED_SCAN_PASS_ALL_ENABLED))
1771                         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
1772
1773                 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
1774                              ieee80211_is_probe_resp(hdr->frame_control)))
1775                         rx_status->boottime_ns = ktime_get_boottime_ns();
1776         }
1777
1778         if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
1779                 kfree_skb(skb);
1780                 goto out;
1781         }
1782
1783         if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc))
1784                 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue,
1785                                                 sta, csi);
1786 out:
1787         rcu_read_unlock();
1788 }
1789
1790 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
1791                                 struct iwl_rx_cmd_buffer *rxb, int queue)
1792 {
1793         struct ieee80211_rx_status *rx_status;
1794         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1795         struct iwl_rx_no_data *desc = (void *)pkt->data;
1796         u32 rate_n_flags = le32_to_cpu(desc->rate);
1797         u32 gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
1798         u32 rssi = le32_to_cpu(desc->rssi);
1799         u32 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
1800         u16 phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
1801         struct ieee80211_sta *sta = NULL;
1802         struct sk_buff *skb;
1803         u8 channel, energy_a, energy_b;
1804         struct iwl_mvm_rx_phy_data phy_data = {
1805                 .d0 = desc->phy_info[0],
1806                 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1807         };
1808
1809         if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1810                 return;
1811
1812         energy_a = (rssi & RX_NO_DATA_CHAIN_A_MSK) >> RX_NO_DATA_CHAIN_A_POS;
1813         energy_b = (rssi & RX_NO_DATA_CHAIN_B_MSK) >> RX_NO_DATA_CHAIN_B_POS;
1814         channel = (rssi & RX_NO_DATA_CHANNEL_MSK) >> RX_NO_DATA_CHANNEL_POS;
1815
1816         phy_data.info_type =
1817                 le32_get_bits(desc->phy_info[1],
1818                               IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1819
1820         /* Dont use dev_alloc_skb(), we'll have enough headroom once
1821          * ieee80211_hdr pulled.
1822          */
1823         skb = alloc_skb(128, GFP_ATOMIC);
1824         if (!skb) {
1825                 IWL_ERR(mvm, "alloc_skb failed\n");
1826                 return;
1827         }
1828
1829         rx_status = IEEE80211_SKB_RXCB(skb);
1830
1831         /* 0-length PSDU */
1832         rx_status->flag |= RX_FLAG_NO_PSDU;
1833
1834         switch (info_type) {
1835         case RX_NO_DATA_INFO_TYPE_NDP:
1836                 rx_status->zero_length_psdu_type =
1837                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
1838                 break;
1839         case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
1840         case RX_NO_DATA_INFO_TYPE_HE_TB_UNMATCHED:
1841                 rx_status->zero_length_psdu_type =
1842                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
1843                 break;
1844         default:
1845                 rx_status->zero_length_psdu_type =
1846                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
1847                 break;
1848         }
1849
1850         /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1851         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1852         case RATE_MCS_CHAN_WIDTH_20:
1853                 break;
1854         case RATE_MCS_CHAN_WIDTH_40:
1855                 rx_status->bw = RATE_INFO_BW_40;
1856                 break;
1857         case RATE_MCS_CHAN_WIDTH_80:
1858                 rx_status->bw = RATE_INFO_BW_80;
1859                 break;
1860         case RATE_MCS_CHAN_WIDTH_160:
1861                 rx_status->bw = RATE_INFO_BW_160;
1862                 break;
1863         }
1864
1865         if (rate_n_flags & RATE_MCS_HE_MSK)
1866                 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1867                               phy_info, queue);
1868
1869         iwl_mvm_decode_lsig(skb, &phy_data);
1870
1871         rx_status->device_timestamp = gp2_on_air_rise;
1872         rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1873                 NL80211_BAND_2GHZ;
1874         rx_status->freq = ieee80211_channel_to_frequency(channel,
1875                                                          rx_status->band);
1876         iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1877                                     energy_b);
1878
1879         rcu_read_lock();
1880
1881         if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1882             rate_n_flags & RATE_MCS_SGI_MSK)
1883                 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1884         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1885                 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1886         if (rate_n_flags & RATE_MCS_LDPC_MSK)
1887                 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1888         if (rate_n_flags & RATE_MCS_HT_MSK) {
1889                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1890                                 RATE_MCS_STBC_POS;
1891                 rx_status->encoding = RX_ENC_HT;
1892                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1893                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1894         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1895                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1896                                 RATE_MCS_STBC_POS;
1897                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1898                 rx_status->encoding = RX_ENC_VHT;
1899                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1900                 if (rate_n_flags & RATE_MCS_BF_MSK)
1901                         rx_status->enc_flags |= RX_ENC_FLAG_BF;
1902                 /*
1903                  * take the nss from the rx_vec since the rate_n_flags has
1904                  * only 2 bits for the nss which gives a max of 4 ss but
1905                  * there may be up to 8 spatial streams
1906                  */
1907                 rx_status->nss =
1908                         le32_get_bits(desc->rx_vec[0],
1909                                       RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
1910         } else if (rate_n_flags & RATE_MCS_HE_MSK) {
1911                 rx_status->nss =
1912                         le32_get_bits(desc->rx_vec[0],
1913                                       RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
1914         } else {
1915                 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1916                                                                rx_status->band);
1917
1918                 if (WARN(rate < 0 || rate > 0xFF,
1919                          "Invalid rate flags 0x%x, band %d,\n",
1920                          rate_n_flags, rx_status->band)) {
1921                         kfree_skb(skb);
1922                         goto out;
1923                 }
1924                 rx_status->rate_idx = rate;
1925         }
1926
1927         ieee80211_rx_napi(mvm->hw, sta, skb, napi);
1928 out:
1929         rcu_read_unlock();
1930 }
1931
1932 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
1933                               struct iwl_rx_cmd_buffer *rxb, int queue)
1934 {
1935         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1936         struct iwl_frame_release *release = (void *)pkt->data;
1937
1938         iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
1939                                           le16_to_cpu(release->nssn), queue);
1940 }