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.
  24  *
  25  * Contact Information:
  26  *  Intel Linux Wireless <ilw@linux.intel.com>
  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.
  36  *
  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 enum iwl_mvm_release_flags {
 522         IWL_MVM_RELEASE_SEND_RSS_SYNC = BIT(0),
 523         IWL_MVM_RELEASE_FROM_RSS_SYNC = BIT(1),
 524 };
 525
 526 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
 527                                    struct ieee80211_sta *sta,
 528                                    struct napi_struct *napi,
 529                                    struct iwl_mvm_baid_data *baid_data,
 530                                    struct iwl_mvm_reorder_buffer *reorder_buf,
 531                                    u16 nssn, u32 flags)
 532 {
 533         struct iwl_mvm_reorder_buf_entry *entries =
 534                 &baid_data->entries[reorder_buf->queue *
 535                                     baid_data->entries_per_queue];
 536         u16 ssn = reorder_buf->head_sn;
 537
 538         lockdep_assert_held(&reorder_buf->lock);
 539
 540         /*
 541          * We keep the NSSN not too far behind, if we are sync'ing it and it
 542          * is more than 2048 ahead of us, it must be behind us. Discard it.
 543          * This can happen if the queue that hit the 0 / 2048 seqno was lagging
 544          * behind and this queue already processed packets. The next if
 545          * would have caught cases where this queue would have processed less
 546          * than 64 packets, but it may have processed more than 64 packets.
 547          */
 548         if ((flags & IWL_MVM_RELEASE_FROM_RSS_SYNC) &&
 549             ieee80211_sn_less(nssn, ssn))
 550                 goto set_timer;
 551
 552         /* ignore nssn smaller than head sn - this can happen due to timeout */
 553         if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
 554                 goto set_timer;
 555
 556         while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
 557                 int index = ssn % reorder_buf->buf_size;
 558                 struct sk_buff_head *skb_list = &entries[index].e.frames;
 559                 struct sk_buff *skb;
 560
 561                 ssn = ieee80211_sn_inc(ssn);
 562                 if ((flags & IWL_MVM_RELEASE_SEND_RSS_SYNC) &&
 563                     (ssn == 2048 || ssn == 0))
 564                         iwl_mvm_sync_nssn(mvm, baid_data->baid, ssn);
 565
 566                 /*
 567                  * Empty the list. Will have more than one frame for A-MSDU.
 568                  * Empty list is valid as well since nssn indicates frames were
 569                  * received.
 570                  */
 571                 while ((skb = __skb_dequeue(skb_list))) {
 572                         iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
 573                                                         reorder_buf->queue,
 574                                                         sta, false);
 575                         reorder_buf->num_stored--;
 576                 }
 577         }
 578         reorder_buf->head_sn = nssn;
 579
 580 set_timer:
 581         if (reorder_buf->num_stored && !reorder_buf->removed) {
 582                 u16 index = reorder_buf->head_sn % reorder_buf->buf_size;
 583
 584                 while (skb_queue_empty(&entries[index].e.frames))
 585                         index = (index + 1) % reorder_buf->buf_size;
 586                 /* modify timer to match next frame's expiration time */
 587                 mod_timer(&reorder_buf->reorder_timer,
 588                           entries[index].e.reorder_time + 1 +
 589                           RX_REORDER_BUF_TIMEOUT_MQ);
 590         } else {
 591                 del_timer(&reorder_buf->reorder_timer);
 592         }
 593 }
 594
 595 void iwl_mvm_reorder_timer_expired(struct timer_list *t)
 596 {
 597         struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer);
 598         struct iwl_mvm_baid_data *baid_data =
 599                 iwl_mvm_baid_data_from_reorder_buf(buf);
 600         struct iwl_mvm_reorder_buf_entry *entries =
 601                 &baid_data->entries[buf->queue * baid_data->entries_per_queue];
 602         int i;
 603         u16 sn = 0, index = 0;
 604         bool expired = false;
 605         bool cont = false;
 606
 607         spin_lock(&buf->lock);
 608
 609         if (!buf->num_stored || buf->removed) {
 610                 spin_unlock(&buf->lock);
 611                 return;
 612         }
 613
 614         for (i = 0; i < buf->buf_size ; i++) {
 615                 index = (buf->head_sn + i) % buf->buf_size;
 616
 617                 if (skb_queue_empty(&entries[index].e.frames)) {
 618                         /*
 619                          * If there is a hole and the next frame didn't expire
 620                          * we want to break and not advance SN
 621                          */
 622                         cont = false;
 623                         continue;
 624                 }
 625                 if (!cont &&
 626                     !time_after(jiffies, entries[index].e.reorder_time +
 627                                          RX_REORDER_BUF_TIMEOUT_MQ))
 628                         break;
 629
 630                 expired = true;
 631                 /* continue until next hole after this expired frames */
 632                 cont = true;
 633                 sn = ieee80211_sn_add(buf->head_sn, i + 1);
 634         }
 635
 636         if (expired) {
 637                 struct ieee80211_sta *sta;
 638                 struct iwl_mvm_sta *mvmsta;
 639                 u8 sta_id = baid_data->sta_id;
 640
 641                 rcu_read_lock();
 642                 sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]);
 643                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
 644
 645                 /* SN is set to the last expired frame + 1 */
 646                 IWL_DEBUG_HT(buf->mvm,
 647                              "Releasing expired frames for sta %u, sn %d\n",
 648                              sta_id, sn);
 649                 iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif,
 650                                                      sta, baid_data->tid);
 651                 iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data,
 652                                        buf, sn, IWL_MVM_RELEASE_SEND_RSS_SYNC);
 653                 rcu_read_unlock();
 654         } else {
 655                 /*
 656                  * If no frame expired and there are stored frames, index is now
 657                  * pointing to the first unexpired frame - modify timer
 658                  * accordingly to this frame.
 659                  */
 660                 mod_timer(&buf->reorder_timer,
 661                           entries[index].e.reorder_time +
 662                           1 + RX_REORDER_BUF_TIMEOUT_MQ);
 663         }
 664         spin_unlock(&buf->lock);
 665 }
 666
 667 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
 668                            struct iwl_mvm_delba_data *data)
 669 {
 670         struct iwl_mvm_baid_data *ba_data;
 671         struct ieee80211_sta *sta;
 672         struct iwl_mvm_reorder_buffer *reorder_buf;
 673         u8 baid = data->baid;
 674
 675         if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
 676                 return;
 677
 678         rcu_read_lock();
 679
 680         ba_data = rcu_dereference(mvm->baid_map[baid]);
 681         if (WARN_ON_ONCE(!ba_data))
 682                 goto out;
 683
 684         sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
 685         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
 686                 goto out;
 687
 688         reorder_buf = &ba_data->reorder_buf[queue];
 689
 690         /* release all frames that are in the reorder buffer to the stack */
 691         spin_lock_bh(&reorder_buf->lock);
 692         iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
 693                                ieee80211_sn_add(reorder_buf->head_sn,
 694                                                 reorder_buf->buf_size),
 695                                0);
 696         spin_unlock_bh(&reorder_buf->lock);
 697         del_timer_sync(&reorder_buf->reorder_timer);
 698
 699 out:
 700         rcu_read_unlock();
 701 }
 702
 703 static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
 704                                               struct napi_struct *napi,
 705                                               u8 baid, u16 nssn, int queue,
 706                                               u32 flags)
 707 {
 708         struct ieee80211_sta *sta;
 709         struct iwl_mvm_reorder_buffer *reorder_buf;
 710         struct iwl_mvm_baid_data *ba_data;
 711
 712         IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
 713                      baid, nssn);
 714
 715         if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
 716                          baid >= ARRAY_SIZE(mvm->baid_map)))
 717                 return;
 718
 719         rcu_read_lock();
 720
 721         ba_data = rcu_dereference(mvm->baid_map[baid]);
 722         if (WARN_ON_ONCE(!ba_data))
 723                 goto out;
 724
 725         sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
 726         if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
 727                 goto out;
 728
 729         reorder_buf = &ba_data->reorder_buf[queue];
 730
 731         spin_lock_bh(&reorder_buf->lock);
 732         iwl_mvm_release_frames(mvm, sta, napi, ba_data,
 733                                reorder_buf, nssn, flags);
 734         spin_unlock_bh(&reorder_buf->lock);
 735
 736 out:
 737         rcu_read_unlock();
 738 }
 739
 740 static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm,
 741                               struct napi_struct *napi, int queue,
 742                               const struct iwl_mvm_nssn_sync_data *data)
 743 {
 744         iwl_mvm_release_frames_from_notif(mvm, napi, data->baid,
 745                                           data->nssn, queue,
 746                                           IWL_MVM_RELEASE_FROM_RSS_SYNC);
 747 }
 748
 749 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
 750                             struct iwl_rx_cmd_buffer *rxb, int queue)
 751 {
 752         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 753         struct iwl_rxq_sync_notification *notif;
 754         struct iwl_mvm_internal_rxq_notif *internal_notif;
 755
 756         notif = (void *)pkt->data;
 757         internal_notif = (void *)notif->payload;
 758
 759         if (internal_notif->sync &&
 760             mvm->queue_sync_cookie != internal_notif->cookie) {
 761                 WARN_ONCE(1, "Received expired RX queue sync message\n");
 762                 return;
 763         }
 764
 765         switch (internal_notif->type) {
 766         case IWL_MVM_RXQ_EMPTY:
 767                 break;
 768         case IWL_MVM_RXQ_NOTIF_DEL_BA:
 769                 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
 770                 break;
 771         case IWL_MVM_RXQ_NSSN_SYNC:
 772                 iwl_mvm_nssn_sync(mvm, napi, queue,
 773                                   (void *)internal_notif->data);
 774                 break;
 775         default:
 776                 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
 777         }
 778
 779         if (internal_notif->sync &&
 780             !atomic_dec_return(&mvm->queue_sync_counter))
 781                 wake_up(&mvm->rx_sync_waitq);
 782 }
 783
 784 /*
 785  * Returns true if the MPDU was buffered\dropped, false if it should be passed
 786  * to upper layer.
 787  */
 788 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
 789                             struct napi_struct *napi,
 790                             int queue,
 791                             struct ieee80211_sta *sta,
 792                             struct sk_buff *skb,
 793                             struct iwl_rx_mpdu_desc *desc)
 794 {
 795         struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
 796         struct iwl_mvm_sta *mvm_sta;
 797         struct iwl_mvm_baid_data *baid_data;
 798         struct iwl_mvm_reorder_buffer *buffer;
 799         struct sk_buff *tail;
 800         u32 reorder = le32_to_cpu(desc->reorder_data);
 801         bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
 802         bool last_subframe =
 803                 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
 804         u8 tid = ieee80211_get_tid(hdr);
 805         u8 sub_frame_idx = desc->amsdu_info &
 806                            IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
 807         struct iwl_mvm_reorder_buf_entry *entries;
 808         int index;
 809         u16 nssn, sn;
 810         u8 baid;
 811
 812         baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
 813                 IWL_RX_MPDU_REORDER_BAID_SHIFT;
 814
 815         /*
 816          * This also covers the case of receiving a Block Ack Request
 817          * outside a BA session; we'll pass it to mac80211 and that
 818          * then sends a delBA action frame.
 819          * This also covers pure monitor mode, in which case we won't
 820          * have any BA sessions.
 821          */
 822         if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
 823                 return false;
 824
 825         /* no sta yet */
 826         if (WARN_ONCE(IS_ERR_OR_NULL(sta),
 827                       "Got valid BAID without a valid station assigned\n"))
 828                 return false;
 829
 830         mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 831
 832         /* not a data packet or a bar */
 833         if (!ieee80211_is_back_req(hdr->frame_control) &&
 834             (!ieee80211_is_data_qos(hdr->frame_control) ||
 835              is_multicast_ether_addr(hdr->addr1)))
 836                 return false;
 837
 838         if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
 839                 return false;
 840
 841         baid_data = rcu_dereference(mvm->baid_map[baid]);
 842         if (!baid_data) {
 843                 IWL_DEBUG_RX(mvm,
 844                              "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
 845                               baid, reorder);
 846                 return false;
 847         }
 848
 849         if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id,
 850                  "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n",
 851                  baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id,
 852                  tid))
 853                 return false;
 854
 855         nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
 856         sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
 857                 IWL_RX_MPDU_REORDER_SN_SHIFT;
 858
 859         buffer = &baid_data->reorder_buf[queue];
 860         entries = &baid_data->entries[queue * baid_data->entries_per_queue];
 861
 862         spin_lock_bh(&buffer->lock);
 863
 864         if (!buffer->valid) {
 865                 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
 866                         spin_unlock_bh(&buffer->lock);
 867                         return false;
 868                 }
 869                 buffer->valid = true;
 870         }
 871
 872         if (ieee80211_is_back_req(hdr->frame_control)) {
 873                 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
 874                                        buffer, nssn, 0);
 875                 goto drop;
 876         }
 877
 878         /*
 879          * If there was a significant jump in the nssn - adjust.
 880          * If the SN is smaller than the NSSN it might need to first go into
 881          * the reorder buffer, in which case we just release up to it and the
 882          * rest of the function will take care of storing it and releasing up to
 883          * the nssn.
 884          * This should not happen. This queue has been lagging and it should
 885          * have been updated by a IWL_MVM_RXQ_NSSN_SYNC notification. Be nice
 886          * and update the other queues.
 887          */
 888         if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
 889                                 buffer->buf_size) ||
 890             !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
 891                 u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;
 892
 893                 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
 894                                        min_sn, IWL_MVM_RELEASE_SEND_RSS_SYNC);
 895         }
 896
 897         /* drop any oudated packets */
 898         if (ieee80211_sn_less(sn, buffer->head_sn))
 899                 goto drop;
 900
 901         /* release immediately if allowed by nssn and no stored frames */
 902         if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
 903                 if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
 904                                        buffer->buf_size) &&
 905                    (!amsdu || last_subframe)) {
 906                         /*
 907                          * If we crossed the 2048 or 0 SN, notify all the
 908                          * queues. This is done in order to avoid having a
 909                          * head_sn that lags behind for too long. When that
 910                          * happens, we can get to a situation where the head_sn
 911                          * is within the interval [nssn - buf_size : nssn]
 912                          * which will make us think that the nssn is a packet
 913                          * that we already freed because of the reordering
 914                          * buffer and we will ignore it. So maintain the
 915                          * head_sn somewhat updated across all the queues:
 916                          * when it crosses 0 and 2048.
 917                          */
 918                         if (sn == 2048 || sn == 0)
 919                                 iwl_mvm_sync_nssn(mvm, baid, sn);
 920                         buffer->head_sn = nssn;
 921                 }
 922                 /* No need to update AMSDU last SN - we are moving the head */
 923                 spin_unlock_bh(&buffer->lock);
 924                 return false;
 925         }
 926
 927         /*
 928          * release immediately if there are no stored frames, and the sn is
 929          * equal to the head.
 930          * This can happen due to reorder timer, where NSSN is behind head_sn.
 931          * When we released everything, and we got the next frame in the
 932          * sequence, according to the NSSN we can't release immediately,
 933          * while technically there is no hole and we can move forward.
 934          */
 935         if (!buffer->num_stored && sn == buffer->head_sn) {
 936                 if (!amsdu || last_subframe) {
 937                         if (sn == 2048 || sn == 0)
 938                                 iwl_mvm_sync_nssn(mvm, baid, sn);
 939                         buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
 940                 }
 941                 /* No need to update AMSDU last SN - we are moving the head */
 942                 spin_unlock_bh(&buffer->lock);
 943                 return false;
 944         }
 945
 946         index = sn % buffer->buf_size;
 947
 948         /*
 949          * Check if we already stored this frame
 950          * As AMSDU is either received or not as whole, logic is simple:
 951          * If we have frames in that position in the buffer and the last frame
 952          * originated from AMSDU had a different SN then it is a retransmission.
 953          * If it is the same SN then if the subframe index is incrementing it
 954          * is the same AMSDU - otherwise it is a retransmission.
 955          */
 956         tail = skb_peek_tail(&entries[index].e.frames);
 957         if (tail && !amsdu)
 958                 goto drop;
 959         else if (tail && (sn != buffer->last_amsdu ||
 960                           buffer->last_sub_index >= sub_frame_idx))
 961                 goto drop;
 962
 963         /* put in reorder buffer */
 964         __skb_queue_tail(&entries[index].e.frames, skb);
 965         buffer->num_stored++;
 966         entries[index].e.reorder_time = jiffies;
 967
 968         if (amsdu) {
 969                 buffer->last_amsdu = sn;
 970                 buffer->last_sub_index = sub_frame_idx;
 971         }
 972
 973         /*
 974          * We cannot trust NSSN for AMSDU sub-frames that are not the last.
 975          * The reason is that NSSN advances on the first sub-frame, and may
 976          * cause the reorder buffer to advance before all the sub-frames arrive.
 977          * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
 978          * SN 1. NSSN for first sub frame will be 3 with the result of driver
 979          * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
 980          * already ahead and it will be dropped.
 981          * If the last sub-frame is not on this queue - we will get frame
 982          * release notification with up to date NSSN.
 983          */
 984         if (!amsdu || last_subframe)
 985                 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
 986                                        buffer, nssn,
 987                                        IWL_MVM_RELEASE_SEND_RSS_SYNC);
 988
 989         spin_unlock_bh(&buffer->lock);
 990         return true;
 991
 992 drop:
 993         kfree_skb(skb);
 994         spin_unlock_bh(&buffer->lock);
 995         return true;
 996 }
 997
 998 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
 999                                     u32 reorder_data, u8 baid)
1000 {
1001         unsigned long now = jiffies;
1002         unsigned long timeout;
1003         struct iwl_mvm_baid_data *data;
1004
1005         rcu_read_lock();
1006
1007         data = rcu_dereference(mvm->baid_map[baid]);
1008         if (!data) {
1009                 IWL_DEBUG_RX(mvm,
1010                              "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
1011                               baid, reorder_data);
1012                 goto out;
1013         }
1014
1015         if (!data->timeout)
1016                 goto out;
1017
1018         timeout = data->timeout;
1019         /*
1020          * Do not update last rx all the time to avoid cache bouncing
1021          * between the rx queues.
1022          * Update it every timeout. Worst case is the session will
1023          * expire after ~ 2 * timeout, which doesn't matter that much.
1024          */
1025         if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
1026                 /* Update is atomic */
1027                 data->last_rx = now;
1028
1029 out:
1030         rcu_read_unlock();
1031 }
1032
1033 static void iwl_mvm_flip_address(u8 *addr)
1034 {
1035         int i;
1036         u8 mac_addr[ETH_ALEN];
1037
1038         for (i = 0; i < ETH_ALEN; i++)
1039                 mac_addr[i] = addr[ETH_ALEN - i - 1];
1040         ether_addr_copy(addr, mac_addr);
1041 }
1042
1043 struct iwl_mvm_rx_phy_data {
1044         enum iwl_rx_phy_info_type info_type;
1045         __le32 d0, d1, d2, d3;
1046         __le16 d4;
1047 };
1048
1049 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
1050                                      struct iwl_mvm_rx_phy_data *phy_data,
1051                                      u32 rate_n_flags,
1052                                      struct ieee80211_radiotap_he_mu *he_mu)
1053 {
1054         u32 phy_data2 = le32_to_cpu(phy_data->d2);
1055         u32 phy_data3 = le32_to_cpu(phy_data->d3);
1056         u16 phy_data4 = le16_to_cpu(phy_data->d4);
1057
1058         if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
1059                 he_mu->flags1 |=
1060                         cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
1061                                     IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
1062
1063                 he_mu->flags1 |=
1064                         le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
1065                                                    phy_data4),
1066                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
1067
1068                 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
1069                                              phy_data2);
1070                 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
1071                                              phy_data3);
1072                 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
1073                                              phy_data2);
1074                 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
1075                                              phy_data3);
1076         }
1077
1078         if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
1079             (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) != RATE_MCS_CHAN_WIDTH_20) {
1080                 he_mu->flags1 |=
1081                         cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
1082                                     IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
1083
1084                 he_mu->flags2 |=
1085                         le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
1086                                                    phy_data4),
1087                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
1088
1089                 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
1090                                              phy_data2);
1091                 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
1092                                              phy_data3);
1093                 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
1094                                              phy_data2);
1095                 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
1096                                              phy_data3);
1097         }
1098 }
1099
1100 static void
1101 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
1102                                u32 rate_n_flags,
1103                                struct ieee80211_radiotap_he *he,
1104                                struct ieee80211_radiotap_he_mu *he_mu,
1105                                struct ieee80211_rx_status *rx_status)
1106 {
1107         /*
1108          * Unfortunately, we have to leave the mac80211 data
1109          * incorrect for the case that we receive an HE-MU
1110          * transmission and *don't* have the HE phy data (due
1111          * to the bits being used for TSF). This shouldn't
1112          * happen though as management frames where we need
1113          * the TSF/timers are not be transmitted in HE-MU.
1114          */
1115         u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1116         u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1117         u8 offs = 0;
1118
1119         rx_status->bw = RATE_INFO_BW_HE_RU;
1120
1121         he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1122
1123         switch (ru) {
1124         case 0 ... 36:
1125                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1126                 offs = ru;
1127                 break;
1128         case 37 ... 52:
1129                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1130                 offs = ru - 37;
1131                 break;
1132         case 53 ... 60:
1133                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1134                 offs = ru - 53;
1135                 break;
1136         case 61 ... 64:
1137                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1138                 offs = ru - 61;
1139                 break;
1140         case 65 ... 66:
1141                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1142                 offs = ru - 65;
1143                 break;
1144         case 67:
1145                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1146                 break;
1147         case 68:
1148                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1149                 break;
1150         }
1151         he->data2 |= le16_encode_bits(offs,
1152                                       IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1153         he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1154                                  IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1155         if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1156                 he->data2 |=
1157                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1158
1159 #define CHECK_BW(bw) \
1160         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1161                      RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1162         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1163                      RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1164         CHECK_BW(20);
1165         CHECK_BW(40);
1166         CHECK_BW(80);
1167         CHECK_BW(160);
1168
1169         if (he_mu)
1170                 he_mu->flags2 |=
1171                         le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1172                                                    rate_n_flags),
1173                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1174         else if (he_type == RATE_MCS_HE_TYPE_TRIG)
1175                 he->data6 |=
1176                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1177                         le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1178                                                    rate_n_flags),
1179                                          IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1180 }
1181
1182 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1183                                        struct iwl_mvm_rx_phy_data *phy_data,
1184                                        struct ieee80211_radiotap_he *he,
1185                                        struct ieee80211_radiotap_he_mu *he_mu,
1186                                        struct ieee80211_rx_status *rx_status,
1187                                        u32 rate_n_flags, int queue)
1188 {
1189         switch (phy_data->info_type) {
1190         case IWL_RX_PHY_INFO_TYPE_NONE:
1191         case IWL_RX_PHY_INFO_TYPE_CCK:
1192         case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1193         case IWL_RX_PHY_INFO_TYPE_HT:
1194         case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1195         case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1196                 return;
1197         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1198                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1199                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1200                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1201                                          IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1202                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1203                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1204                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1205                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1206                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1207                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1208                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1209                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1210                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1211                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1212                                                             IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1213                                               IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1214                 /* fall through */
1215         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1216         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1217         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1218         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1219                 /* HE common */
1220                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1221                                          IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1222                                          IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1223                 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1224                                          IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1225                                          IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1226                                          IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1227                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1228                                                             IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1229                                               IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1230                 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1231                     phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1232                         he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1233                         he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1234                                                             IWL_RX_PHY_DATA0_HE_UPLINK),
1235                                                       IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1236                 }
1237                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1238                                                             IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1239                                               IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1240                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1241                                                             IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1242                                               IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1243                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1244                                                             IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1245                                               IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1246                 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1247                                                             IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1248                                               IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1249                 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1250                                                             IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1251                                               IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1252                 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1253                                                             IWL_RX_PHY_DATA0_HE_DOPPLER),
1254                                               IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1255                 break;
1256         }
1257
1258         switch (phy_data->info_type) {
1259         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1260         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1261         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1262                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1263                 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1264                                                             IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1265                                               IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1266                 break;
1267         default:
1268                 /* nothing here */
1269                 break;
1270         }
1271
1272         switch (phy_data->info_type) {
1273         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1274                 he_mu->flags1 |=
1275                         le16_encode_bits(le16_get_bits(phy_data->d4,
1276                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1277                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1278                 he_mu->flags1 |=
1279                         le16_encode_bits(le16_get_bits(phy_data->d4,
1280                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1281                                          IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1282                 he_mu->flags2 |=
1283                         le16_encode_bits(le16_get_bits(phy_data->d4,
1284                                                        IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1285                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1286                 iwl_mvm_decode_he_mu_ext(mvm, phy_data, rate_n_flags, he_mu);
1287                 /* fall through */
1288         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1289                 he_mu->flags2 |=
1290                         le16_encode_bits(le32_get_bits(phy_data->d1,
1291                                                        IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1292                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1293                 he_mu->flags2 |=
1294                         le16_encode_bits(le32_get_bits(phy_data->d1,
1295                                                        IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1296                                          IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1297                 /* fall through */
1298         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1299         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1300                 iwl_mvm_decode_he_phy_ru_alloc(phy_data, rate_n_flags,
1301                                                he, he_mu, rx_status);
1302                 break;
1303         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1304                 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1305                 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1306                                                             IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1307                                               IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1308                 break;
1309         default:
1310                 /* nothing */
1311                 break;
1312         }
1313 }
1314
1315 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1316                           struct iwl_mvm_rx_phy_data *phy_data,
1317                           u32 rate_n_flags, u16 phy_info, int queue)
1318 {
1319         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1320         struct ieee80211_radiotap_he *he = NULL;
1321         struct ieee80211_radiotap_he_mu *he_mu = NULL;
1322         u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1323         u8 stbc, ltf;
1324         static const struct ieee80211_radiotap_he known = {
1325                 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1326                                      IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1327                                      IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1328                                      IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1329                 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1330                                      IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1331         };
1332         static const struct ieee80211_radiotap_he_mu mu_known = {
1333                 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1334                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1335                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1336                                       IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1337                 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1338                                       IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1339         };
1340
1341         he = skb_put_data(skb, &known, sizeof(known));
1342         rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1343
1344         if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1345             phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1346                 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1347                 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1348         }
1349
1350         /* report the AMPDU-EOF bit on single frames */
1351         if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1352                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1353                 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1354                 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1355                         rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1356         }
1357
1358         if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1359                 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1360                                            rate_n_flags, queue);
1361
1362         /* update aggregation data for monitor sake on default queue */
1363         if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1364             (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1365                 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1366
1367                 /* toggle is switched whenever new aggregation starts */
1368                 if (toggle_bit != mvm->ampdu_toggle) {
1369                         rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1370                         if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1371                                 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1372                 }
1373         }
1374
1375         if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1376             rate_n_flags & RATE_MCS_HE_106T_MSK) {
1377                 rx_status->bw = RATE_INFO_BW_HE_RU;
1378                 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1379         }
1380
1381         /* actually data is filled in mac80211 */
1382         if (he_type == RATE_MCS_HE_TYPE_SU ||
1383             he_type == RATE_MCS_HE_TYPE_EXT_SU)
1384                 he->data1 |=
1385                         cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1386
1387         stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS;
1388         rx_status->nss =
1389                 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1390                                         RATE_VHT_MCS_NSS_POS) + 1;
1391         rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1392         rx_status->encoding = RX_ENC_HE;
1393         rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1394         if (rate_n_flags & RATE_MCS_BF_MSK)
1395                 rx_status->enc_flags |= RX_ENC_FLAG_BF;
1396
1397         rx_status->he_dcm =
1398                 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
1399
1400 #define CHECK_TYPE(F)                                                   \
1401         BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F !=        \
1402                      (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1403
1404         CHECK_TYPE(SU);
1405         CHECK_TYPE(EXT_SU);
1406         CHECK_TYPE(MU);
1407         CHECK_TYPE(TRIG);
1408
1409         he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1410
1411         if (rate_n_flags & RATE_MCS_BF_MSK)
1412                 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1413
1414         switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1415                 RATE_MCS_HE_GI_LTF_POS) {
1416         case 0:
1417                 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1418                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1419                 else
1420                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1421                 if (he_type == RATE_MCS_HE_TYPE_MU)
1422                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1423                 else
1424                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1425                 break;
1426         case 1:
1427                 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1428                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1429                 else
1430                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1431                 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1432                 break;
1433         case 2:
1434                 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1435                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1436                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1437                 } else {
1438                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1439                         ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1440                 }
1441                 break;
1442         case 3:
1443                 if ((he_type == RATE_MCS_HE_TYPE_SU ||
1444                      he_type == RATE_MCS_HE_TYPE_EXT_SU) &&
1445                     rate_n_flags & RATE_MCS_SGI_MSK)
1446                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1447                 else
1448                         rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1449                 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1450                 break;
1451         }
1452
1453         he->data5 |= le16_encode_bits(ltf,
1454                                       IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1455 }
1456
1457 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1458                                 struct iwl_mvm_rx_phy_data *phy_data)
1459 {
1460         struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1461         struct ieee80211_radiotap_lsig *lsig;
1462
1463         switch (phy_data->info_type) {
1464         case IWL_RX_PHY_INFO_TYPE_HT:
1465         case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1466         case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1467         case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1468         case IWL_RX_PHY_INFO_TYPE_HE_SU:
1469         case IWL_RX_PHY_INFO_TYPE_HE_MU:
1470         case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1471         case IWL_RX_PHY_INFO_TYPE_HE_TB:
1472                 lsig = skb_put(skb, sizeof(*lsig));
1473                 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1474                 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1475                                                              IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1476                                                IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1477                 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1478                 break;
1479         default:
1480                 break;
1481         }
1482 }
1483
1484 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
1485                         struct iwl_rx_cmd_buffer *rxb, int queue)
1486 {
1487         struct ieee80211_rx_status *rx_status;
1488         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1489         struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
1490         struct ieee80211_hdr *hdr;
1491         u32 len = le16_to_cpu(desc->mpdu_len);
1492         u32 rate_n_flags, gp2_on_air_rise;
1493         u16 phy_info = le16_to_cpu(desc->phy_info);
1494         struct ieee80211_sta *sta = NULL;
1495         struct sk_buff *skb;
1496         u8 crypt_len = 0, channel, energy_a, energy_b;
1497         size_t desc_size;
1498         struct iwl_mvm_rx_phy_data phy_data = {
1499                 .d4 = desc->phy_data4,
1500                 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1501         };
1502         bool csi = false;
1503
1504         if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1505                 return;
1506
1507         if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
1508                 rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
1509                 channel = desc->v3.channel;
1510                 gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
1511                 energy_a = desc->v3.energy_a;
1512                 energy_b = desc->v3.energy_b;
1513                 desc_size = sizeof(*desc);
1514
1515                 phy_data.d0 = desc->v3.phy_data0;
1516                 phy_data.d1 = desc->v3.phy_data1;
1517                 phy_data.d2 = desc->v3.phy_data2;
1518                 phy_data.d3 = desc->v3.phy_data3;
1519         } else {
1520                 rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
1521                 channel = desc->v1.channel;
1522                 gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
1523                 energy_a = desc->v1.energy_a;
1524                 energy_b = desc->v1.energy_b;
1525                 desc_size = IWL_RX_DESC_SIZE_V1;
1526
1527                 phy_data.d0 = desc->v1.phy_data0;
1528                 phy_data.d1 = desc->v1.phy_data1;
1529                 phy_data.d2 = desc->v1.phy_data2;
1530                 phy_data.d3 = desc->v1.phy_data3;
1531         }
1532
1533         if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1534                 phy_data.info_type =
1535                         le32_get_bits(phy_data.d1,
1536                                       IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1537
1538         hdr = (void *)(pkt->data + desc_size);
1539         /* Dont use dev_alloc_skb(), we'll have enough headroom once
1540          * ieee80211_hdr pulled.
1541          */
1542         skb = alloc_skb(128, GFP_ATOMIC);
1543         if (!skb) {
1544                 IWL_ERR(mvm, "alloc_skb failed\n");
1545                 return;
1546         }
1547
1548         if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
1549                 /*
1550                  * If the device inserted padding it means that (it thought)
1551                  * the 802.11 header wasn't a multiple of 4 bytes long. In
1552                  * this case, reserve two bytes at the start of the SKB to
1553                  * align the payload properly in case we end up copying it.
1554                  */
1555                 skb_reserve(skb, 2);
1556         }
1557
1558         rx_status = IEEE80211_SKB_RXCB(skb);
1559
1560         /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1561         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1562         case RATE_MCS_CHAN_WIDTH_20:
1563                 break;
1564         case RATE_MCS_CHAN_WIDTH_40:
1565                 rx_status->bw = RATE_INFO_BW_40;
1566                 break;
1567         case RATE_MCS_CHAN_WIDTH_80:
1568                 rx_status->bw = RATE_INFO_BW_80;
1569                 break;
1570         case RATE_MCS_CHAN_WIDTH_160:
1571                 rx_status->bw = RATE_INFO_BW_160;
1572                 break;
1573         }
1574
1575         if (rate_n_flags & RATE_MCS_HE_MSK)
1576                 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1577                               phy_info, queue);
1578
1579         iwl_mvm_decode_lsig(skb, &phy_data);
1580
1581         rx_status = IEEE80211_SKB_RXCB(skb);
1582
1583         if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, phy_info, desc,
1584                               le32_to_cpu(pkt->len_n_flags), queue,
1585                               &crypt_len)) {
1586                 kfree_skb(skb);
1587                 return;
1588         }
1589
1590         /*
1591          * Keep packets with CRC errors (and with overrun) for monitor mode
1592          * (otherwise the firmware discards them) but mark them as bad.
1593          */
1594         if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) ||
1595             !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
1596                 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
1597                              le16_to_cpu(desc->status));
1598                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
1599         }
1600         /* set the preamble flag if appropriate */
1601         if (rate_n_flags & RATE_MCS_CCK_MSK &&
1602             phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
1603                 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1604
1605         if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
1606                 u64 tsf_on_air_rise;
1607
1608                 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
1609                         tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
1610                 else
1611                         tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
1612
1613                 rx_status->mactime = tsf_on_air_rise;
1614                 /* TSF as indicated by the firmware is at INA time */
1615                 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
1616         }
1617
1618         rx_status->device_timestamp = gp2_on_air_rise;
1619         rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1620                 NL80211_BAND_2GHZ;
1621         rx_status->freq = ieee80211_channel_to_frequency(channel,
1622                                                          rx_status->band);
1623         iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1624                                     energy_b);
1625
1626         /* update aggregation data for monitor sake on default queue */
1627         if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1628                 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1629
1630                 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1631                 /*
1632                  * Toggle is switched whenever new aggregation starts. Make
1633                  * sure ampdu_reference is never 0 so we can later use it to
1634                  * see if the frame was really part of an A-MPDU or not.
1635                  */
1636                 if (toggle_bit != mvm->ampdu_toggle) {
1637                         mvm->ampdu_ref++;
1638                         if (mvm->ampdu_ref == 0)
1639                                 mvm->ampdu_ref++;
1640                         mvm->ampdu_toggle = toggle_bit;
1641                 }
1642                 rx_status->ampdu_reference = mvm->ampdu_ref;
1643         }
1644
1645         if (unlikely(mvm->monitor_on))
1646                 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
1647
1648         rcu_read_lock();
1649
1650         if (desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
1651                 u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK;
1652
1653                 if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) {
1654                         sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
1655                         if (IS_ERR(sta))
1656                                 sta = NULL;
1657                 }
1658         } else if (!is_multicast_ether_addr(hdr->addr2)) {
1659                 /*
1660                  * This is fine since we prevent two stations with the same
1661                  * address from being added.
1662                  */
1663                 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
1664         }
1665
1666         if (sta) {
1667                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1668                 struct ieee80211_vif *tx_blocked_vif =
1669                         rcu_dereference(mvm->csa_tx_blocked_vif);
1670                 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
1671                                IWL_RX_MPDU_REORDER_BAID_MASK) >>
1672                                IWL_RX_MPDU_REORDER_BAID_SHIFT);
1673                 struct iwl_fw_dbg_trigger_tlv *trig;
1674                 struct ieee80211_vif *vif = mvmsta->vif;
1675
1676                 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
1677                     !is_multicast_ether_addr(hdr->addr1) &&
1678                     ieee80211_is_data(hdr->frame_control) &&
1679                     time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
1680                         schedule_delayed_work(&mvm->tcm.work, 0);
1681
1682                 /*
1683                  * We have tx blocked stations (with CS bit). If we heard
1684                  * frames from a blocked station on a new channel we can
1685                  * TX to it again.
1686                  */
1687                 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
1688                         struct iwl_mvm_vif *mvmvif =
1689                                 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1690
1691                         if (mvmvif->csa_target_freq == rx_status->freq)
1692                                 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
1693                                                                  false);
1694                 }
1695
1696                 rs_update_last_rssi(mvm, mvmsta, rx_status);
1697
1698                 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
1699                                              ieee80211_vif_to_wdev(vif),
1700                                              FW_DBG_TRIGGER_RSSI);
1701
1702                 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
1703                         struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
1704                         s32 rssi;
1705
1706                         rssi_trig = (void *)trig->data;
1707                         rssi = le32_to_cpu(rssi_trig->rssi);
1708
1709                         if (rx_status->signal < rssi)
1710                                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1711                                                         NULL);
1712                 }
1713
1714                 if (ieee80211_is_data(hdr->frame_control))
1715                         iwl_mvm_rx_csum(sta, skb, desc);
1716
1717                 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
1718                         kfree_skb(skb);
1719                         goto out;
1720                 }
1721
1722                 /*
1723                  * Our hardware de-aggregates AMSDUs but copies the mac header
1724                  * as it to the de-aggregated MPDUs. We need to turn off the
1725                  * AMSDU bit in the QoS control ourselves.
1726                  * In addition, HW reverses addr3 and addr4 - reverse it back.
1727                  */
1728                 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
1729                     !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
1730                         u8 *qc = ieee80211_get_qos_ctl(hdr);
1731
1732                         *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1733
1734                         if (mvm->trans->cfg->device_family ==
1735                             IWL_DEVICE_FAMILY_9000) {
1736                                 iwl_mvm_flip_address(hdr->addr3);
1737
1738                                 if (ieee80211_has_a4(hdr->frame_control))
1739                                         iwl_mvm_flip_address(hdr->addr4);
1740                         }
1741                 }
1742                 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
1743                         u32 reorder_data = le32_to_cpu(desc->reorder_data);
1744
1745                         iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
1746                 }
1747         }
1748
1749         if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1750             rate_n_flags & RATE_MCS_SGI_MSK)
1751                 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1752         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1753                 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1754         if (rate_n_flags & RATE_MCS_LDPC_MSK)
1755                 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1756         if (rate_n_flags & RATE_MCS_HT_MSK) {
1757                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1758                                 RATE_MCS_STBC_POS;
1759                 rx_status->encoding = RX_ENC_HT;
1760                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1761                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1762         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1763                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1764                                 RATE_MCS_STBC_POS;
1765                 rx_status->nss =
1766                         ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1767                                                 RATE_VHT_MCS_NSS_POS) + 1;
1768                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1769                 rx_status->encoding = RX_ENC_VHT;
1770                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1771                 if (rate_n_flags & RATE_MCS_BF_MSK)
1772                         rx_status->enc_flags |= RX_ENC_FLAG_BF;
1773         } else if (!(rate_n_flags & RATE_MCS_HE_MSK)) {
1774                 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1775                                                                rx_status->band);
1776
1777                 if (WARN(rate < 0 || rate > 0xFF,
1778                          "Invalid rate flags 0x%x, band %d,\n",
1779                          rate_n_flags, rx_status->band)) {
1780                         kfree_skb(skb);
1781                         goto out;
1782                 }
1783                 rx_status->rate_idx = rate;
1784         }
1785
1786         /* management stuff on default queue */
1787         if (!queue) {
1788                 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
1789                               ieee80211_is_probe_resp(hdr->frame_control)) &&
1790                              mvm->sched_scan_pass_all ==
1791                              SCHED_SCAN_PASS_ALL_ENABLED))
1792                         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
1793
1794                 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
1795                              ieee80211_is_probe_resp(hdr->frame_control)))
1796                         rx_status->boottime_ns = ktime_get_boottime_ns();
1797         }
1798
1799         if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
1800                 kfree_skb(skb);
1801                 goto out;
1802         }
1803
1804         if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc))
1805                 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue,
1806                                                 sta, csi);
1807 out:
1808         rcu_read_unlock();
1809 }
1810
1811 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
1812                                 struct iwl_rx_cmd_buffer *rxb, int queue)
1813 {
1814         struct ieee80211_rx_status *rx_status;
1815         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1816         struct iwl_rx_no_data *desc = (void *)pkt->data;
1817         u32 rate_n_flags = le32_to_cpu(desc->rate);
1818         u32 gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
1819         u32 rssi = le32_to_cpu(desc->rssi);
1820         u32 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
1821         u16 phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
1822         struct ieee80211_sta *sta = NULL;
1823         struct sk_buff *skb;
1824         u8 channel, energy_a, energy_b;
1825         struct iwl_mvm_rx_phy_data phy_data = {
1826                 .d0 = desc->phy_info[0],
1827                 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1828         };
1829
1830         if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1831                 return;
1832
1833         energy_a = (rssi & RX_NO_DATA_CHAIN_A_MSK) >> RX_NO_DATA_CHAIN_A_POS;
1834         energy_b = (rssi & RX_NO_DATA_CHAIN_B_MSK) >> RX_NO_DATA_CHAIN_B_POS;
1835         channel = (rssi & RX_NO_DATA_CHANNEL_MSK) >> RX_NO_DATA_CHANNEL_POS;
1836
1837         phy_data.info_type =
1838                 le32_get_bits(desc->phy_info[1],
1839                               IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1840
1841         /* Dont use dev_alloc_skb(), we'll have enough headroom once
1842          * ieee80211_hdr pulled.
1843          */
1844         skb = alloc_skb(128, GFP_ATOMIC);
1845         if (!skb) {
1846                 IWL_ERR(mvm, "alloc_skb failed\n");
1847                 return;
1848         }
1849
1850         rx_status = IEEE80211_SKB_RXCB(skb);
1851
1852         /* 0-length PSDU */
1853         rx_status->flag |= RX_FLAG_NO_PSDU;
1854
1855         switch (info_type) {
1856         case RX_NO_DATA_INFO_TYPE_NDP:
1857                 rx_status->zero_length_psdu_type =
1858                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
1859                 break;
1860         case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
1861         case RX_NO_DATA_INFO_TYPE_HE_TB_UNMATCHED:
1862                 rx_status->zero_length_psdu_type =
1863                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
1864                 break;
1865         default:
1866                 rx_status->zero_length_psdu_type =
1867                         IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
1868                 break;
1869         }
1870
1871         /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1872         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1873         case RATE_MCS_CHAN_WIDTH_20:
1874                 break;
1875         case RATE_MCS_CHAN_WIDTH_40:
1876                 rx_status->bw = RATE_INFO_BW_40;
1877                 break;
1878         case RATE_MCS_CHAN_WIDTH_80:
1879                 rx_status->bw = RATE_INFO_BW_80;
1880                 break;
1881         case RATE_MCS_CHAN_WIDTH_160:
1882                 rx_status->bw = RATE_INFO_BW_160;
1883                 break;
1884         }
1885
1886         if (rate_n_flags & RATE_MCS_HE_MSK)
1887                 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1888                               phy_info, queue);
1889
1890         iwl_mvm_decode_lsig(skb, &phy_data);
1891
1892         rx_status->device_timestamp = gp2_on_air_rise;
1893         rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1894                 NL80211_BAND_2GHZ;
1895         rx_status->freq = ieee80211_channel_to_frequency(channel,
1896                                                          rx_status->band);
1897         iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1898                                     energy_b);
1899
1900         rcu_read_lock();
1901
1902         if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1903             rate_n_flags & RATE_MCS_SGI_MSK)
1904                 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1905         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1906                 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1907         if (rate_n_flags & RATE_MCS_LDPC_MSK)
1908                 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1909         if (rate_n_flags & RATE_MCS_HT_MSK) {
1910                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1911                                 RATE_MCS_STBC_POS;
1912                 rx_status->encoding = RX_ENC_HT;
1913                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1914                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1915         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1916                 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1917                                 RATE_MCS_STBC_POS;
1918                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1919                 rx_status->encoding = RX_ENC_VHT;
1920                 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1921                 if (rate_n_flags & RATE_MCS_BF_MSK)
1922                         rx_status->enc_flags |= RX_ENC_FLAG_BF;
1923                 /*
1924                  * take the nss from the rx_vec since the rate_n_flags has
1925                  * only 2 bits for the nss which gives a max of 4 ss but
1926                  * there may be up to 8 spatial streams
1927                  */
1928                 rx_status->nss =
1929                         le32_get_bits(desc->rx_vec[0],
1930                                       RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
1931         } else if (rate_n_flags & RATE_MCS_HE_MSK) {
1932                 rx_status->nss =
1933                         le32_get_bits(desc->rx_vec[0],
1934                                       RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
1935         } else {
1936                 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1937                                                                rx_status->band);
1938
1939                 if (WARN(rate < 0 || rate > 0xFF,
1940                          "Invalid rate flags 0x%x, band %d,\n",
1941                          rate_n_flags, rx_status->band)) {
1942                         kfree_skb(skb);
1943                         goto out;
1944                 }
1945                 rx_status->rate_idx = rate;
1946         }
1947
1948         ieee80211_rx_napi(mvm->hw, sta, skb, napi);
1949 out:
1950         rcu_read_unlock();
1951 }
1952
1953 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
1954                               struct iwl_rx_cmd_buffer *rxb, int queue)
1955 {
1956         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1957         struct iwl_frame_release *release = (void *)pkt->data;
1958
1959         iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
1960                                           le16_to_cpu(release->nssn),
1961                                           queue, 0);
1962 }