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