iwlwifi: mvm: add infrastructure for tracking BA session in driver
[cascardo/linux.git] / 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.
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6  * GPL LICENSE SUMMARY
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8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10  * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
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12  * This program is free software; you can redistribute it and/or modify
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31  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
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50  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
51  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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59  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
60  *****************************************************************************/
61 #include <linux/etherdevice.h>
62 #include <linux/skbuff.h>
63 #include "iwl-trans.h"
64 #include "mvm.h"
65 #include "fw-api.h"
66 #include "fw-dbg.h"
67
68 void iwl_mvm_rx_phy_cmd_mq(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
69 {
70         mvm->ampdu_ref++;
71
72 #ifdef CONFIG_IWLWIFI_DEBUGFS
73         if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
74                 spin_lock(&mvm->drv_stats_lock);
75                 mvm->drv_rx_stats.ampdu_count++;
76                 spin_unlock(&mvm->drv_stats_lock);
77         }
78 #endif
79 }
80
81 static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
82                                    int queue, struct ieee80211_sta *sta)
83 {
84         struct iwl_mvm_sta *mvmsta;
85         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
86         struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
87         struct iwl_mvm_key_pn *ptk_pn;
88         u8 tid, keyidx;
89         u8 pn[IEEE80211_CCMP_PN_LEN];
90         u8 *extiv;
91
92         /* do PN checking */
93
94         /* multicast and non-data only arrives on default queue */
95         if (!ieee80211_is_data(hdr->frame_control) ||
96             is_multicast_ether_addr(hdr->addr1))
97                 return 0;
98
99         /* do not check PN for open AP */
100         if (!(stats->flag & RX_FLAG_DECRYPTED))
101                 return 0;
102
103         /*
104          * avoid checking for default queue - we don't want to replicate
105          * all the logic that's necessary for checking the PN on fragmented
106          * frames, leave that to mac80211
107          */
108         if (queue == 0)
109                 return 0;
110
111         /* if we are here - this for sure is either CCMP or GCMP */
112         if (IS_ERR_OR_NULL(sta)) {
113                 IWL_ERR(mvm,
114                         "expected hw-decrypted unicast frame for station\n");
115                 return -1;
116         }
117
118         mvmsta = iwl_mvm_sta_from_mac80211(sta);
119
120         extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
121         keyidx = extiv[3] >> 6;
122
123         ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
124         if (!ptk_pn)
125                 return -1;
126
127         if (ieee80211_is_data_qos(hdr->frame_control))
128                 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
129         else
130                 tid = 0;
131
132         /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
133         if (tid >= IWL_MAX_TID_COUNT)
134                 return -1;
135
136         /* load pn */
137         pn[0] = extiv[7];
138         pn[1] = extiv[6];
139         pn[2] = extiv[5];
140         pn[3] = extiv[4];
141         pn[4] = extiv[1];
142         pn[5] = extiv[0];
143
144         if (memcmp(pn, ptk_pn->q[queue].pn[tid],
145                    IEEE80211_CCMP_PN_LEN) <= 0)
146                 return -1;
147
148         memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
149         stats->flag |= RX_FLAG_PN_VALIDATED;
150
151         return 0;
152 }
153
154 /* iwl_mvm_create_skb Adds the rxb to a new skb */
155 static void iwl_mvm_create_skb(struct sk_buff *skb, struct ieee80211_hdr *hdr,
156                                u16 len, u8 crypt_len,
157                                struct iwl_rx_cmd_buffer *rxb)
158 {
159         struct iwl_rx_packet *pkt = rxb_addr(rxb);
160         struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
161         unsigned int headlen, fraglen, pad_len = 0;
162         unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
163
164         if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD)
165                 pad_len = 2;
166         len -= pad_len;
167
168         /* If frame is small enough to fit in skb->head, pull it completely.
169          * If not, only pull ieee80211_hdr (including crypto if present, and
170          * an additional 8 bytes for SNAP/ethertype, see below) so that
171          * splice() or TCP coalesce are more efficient.
172          *
173          * Since, in addition, ieee80211_data_to_8023() always pull in at
174          * least 8 bytes (possibly more for mesh) we can do the same here
175          * to save the cost of doing it later. That still doesn't pull in
176          * the actual IP header since the typical case has a SNAP header.
177          * If the latter changes (there are efforts in the standards group
178          * to do so) we should revisit this and ieee80211_data_to_8023().
179          */
180         headlen = (len <= skb_tailroom(skb)) ? len :
181                                                hdrlen + crypt_len + 8;
182
183         /* The firmware may align the packet to DWORD.
184          * The padding is inserted after the IV.
185          * After copying the header + IV skip the padding if
186          * present before copying packet data.
187          */
188         hdrlen += crypt_len;
189         memcpy(skb_put(skb, hdrlen), hdr, hdrlen);
190         memcpy(skb_put(skb, headlen - hdrlen), (u8 *)hdr + hdrlen + pad_len,
191                headlen - hdrlen);
192
193         fraglen = len - headlen;
194
195         if (fraglen) {
196                 int offset = (void *)hdr + headlen + pad_len -
197                              rxb_addr(rxb) + rxb_offset(rxb);
198
199                 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
200                                 fraglen, rxb->truesize);
201         }
202 }
203
204 /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
205 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
206                                             struct napi_struct *napi,
207                                             struct sk_buff *skb, int queue,
208                                             struct ieee80211_sta *sta)
209 {
210         if (iwl_mvm_check_pn(mvm, skb, queue, sta))
211                 kfree_skb(skb);
212         else
213                 ieee80211_rx_napi(mvm->hw, NULL, skb, napi);
214 }
215
216 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
217                                         struct iwl_rx_mpdu_desc *desc,
218                                         struct ieee80211_rx_status *rx_status)
219 {
220         int energy_a, energy_b, max_energy;
221
222         energy_a = desc->energy_a;
223         energy_a = energy_a ? -energy_a : S8_MIN;
224         energy_b = desc->energy_b;
225         energy_b = energy_b ? -energy_b : S8_MIN;
226         max_energy = max(energy_a, energy_b);
227
228         IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
229                         energy_a, energy_b, max_energy);
230
231         rx_status->signal = max_energy;
232         rx_status->chains = 0; /* TODO: phy info */
233         rx_status->chain_signal[0] = energy_a;
234         rx_status->chain_signal[1] = energy_b;
235         rx_status->chain_signal[2] = S8_MIN;
236 }
237
238 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
239                              struct ieee80211_rx_status *stats,
240                              struct iwl_rx_mpdu_desc *desc, int queue,
241                              u8 *crypt_len)
242 {
243         u16 status = le16_to_cpu(desc->status);
244
245         if (!ieee80211_has_protected(hdr->frame_control) ||
246             (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
247             IWL_RX_MPDU_STATUS_SEC_NONE)
248                 return 0;
249
250         /* TODO: handle packets encrypted with unknown alg */
251
252         switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
253         case IWL_RX_MPDU_STATUS_SEC_CCM:
254         case IWL_RX_MPDU_STATUS_SEC_GCM:
255                 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
256                 /* alg is CCM: check MIC only */
257                 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
258                         return -1;
259
260                 stats->flag |= RX_FLAG_DECRYPTED;
261                 *crypt_len = IEEE80211_CCMP_HDR_LEN;
262                 return 0;
263         case IWL_RX_MPDU_STATUS_SEC_TKIP:
264                 /* Don't drop the frame and decrypt it in SW */
265                 if (!(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
266                         return 0;
267
268                 *crypt_len = IEEE80211_TKIP_IV_LEN;
269                 /* fall through if TTAK OK */
270         case IWL_RX_MPDU_STATUS_SEC_WEP:
271                 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
272                         return -1;
273
274                 stats->flag |= RX_FLAG_DECRYPTED;
275                 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
276                                 IWL_RX_MPDU_STATUS_SEC_WEP)
277                         *crypt_len = IEEE80211_WEP_IV_LEN;
278                 return 0;
279         case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
280                 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
281                         return -1;
282                 stats->flag |= RX_FLAG_DECRYPTED;
283                 return 0;
284         default:
285                 IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status);
286         }
287
288         return 0;
289 }
290
291 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
292                             struct sk_buff *skb,
293                             struct iwl_rx_mpdu_desc *desc)
294 {
295         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
296         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
297         u16 flags = le16_to_cpu(desc->l3l4_flags);
298         u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
299                           IWL_RX_L3_PROTO_POS);
300
301         if (mvmvif->features & NETIF_F_RXCSUM &&
302             flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
303             (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
304              l3_prot == IWL_RX_L3_TYPE_IPV6 ||
305              l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
306                 skb->ip_summed = CHECKSUM_UNNECESSARY;
307 }
308
309 /*
310  * returns true if a packet outside BA session is a duplicate and
311  * should be dropped
312  */
313 static bool iwl_mvm_is_nonagg_dup(struct ieee80211_sta *sta, int queue,
314                                   struct ieee80211_rx_status *rx_status,
315                                   struct ieee80211_hdr *hdr,
316                                   struct iwl_rx_mpdu_desc *desc)
317 {
318         struct iwl_mvm_sta *mvm_sta;
319         struct iwl_mvm_rxq_dup_data *dup_data;
320         u8 baid, tid, sub_frame_idx;
321
322         if (WARN_ON(IS_ERR_OR_NULL(sta)))
323                 return false;
324
325         baid = (le32_to_cpu(desc->reorder_data) &
326                 IWL_RX_MPDU_REORDER_BAID_MASK) >>
327                 IWL_RX_MPDU_REORDER_BAID_SHIFT;
328
329         if (baid != IWL_RX_REORDER_DATA_INVALID_BAID)
330                 return false;
331
332         mvm_sta = iwl_mvm_sta_from_mac80211(sta);
333         dup_data = &mvm_sta->dup_data[queue];
334
335         /*
336          * Drop duplicate 802.11 retransmissions
337          * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
338          */
339         if (ieee80211_is_ctl(hdr->frame_control) ||
340             ieee80211_is_qos_nullfunc(hdr->frame_control) ||
341             is_multicast_ether_addr(hdr->addr1)) {
342                 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
343                 return false;
344         }
345
346         if (ieee80211_is_data_qos(hdr->frame_control))
347                 /* frame has qos control */
348                 tid = *ieee80211_get_qos_ctl(hdr) &
349                         IEEE80211_QOS_CTL_TID_MASK;
350         else
351                 tid = IWL_MAX_TID_COUNT;
352
353         /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
354         sub_frame_idx = desc->amsdu_info & IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
355
356         if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
357                      dup_data->last_seq[tid] == hdr->seq_ctrl &&
358                      dup_data->last_sub_frame[tid] >= sub_frame_idx))
359                 return true;
360
361         dup_data->last_seq[tid] = hdr->seq_ctrl;
362         dup_data->last_sub_frame[tid] = sub_frame_idx;
363
364         rx_status->flag |= RX_FLAG_DUP_VALIDATED;
365
366         return false;
367 }
368
369 int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask,
370                             const u8 *data, u32 count)
371 {
372         struct iwl_rxq_sync_cmd *cmd;
373         u32 data_size = sizeof(*cmd) + count;
374         int ret;
375
376         /* should be DWORD aligned */
377         if (WARN_ON(count & 3 || count > IWL_MULTI_QUEUE_SYNC_MSG_MAX_SIZE))
378                 return -EINVAL;
379
380         cmd = kzalloc(data_size, GFP_KERNEL);
381         if (!cmd)
382                 return -ENOMEM;
383
384         cmd->rxq_mask = cpu_to_le32(rxq_mask);
385         cmd->count =  cpu_to_le32(count);
386         cmd->flags = 0;
387         memcpy(cmd->payload, data, count);
388
389         ret = iwl_mvm_send_cmd_pdu(mvm,
390                                    WIDE_ID(DATA_PATH_GROUP,
391                                            TRIGGER_RX_QUEUES_NOTIF_CMD),
392                                    0, data_size, cmd);
393
394         kfree(cmd);
395         return ret;
396 }
397
398 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
399                             int queue)
400 {
401         struct iwl_rx_packet *pkt = rxb_addr(rxb);
402         struct iwl_rxq_sync_notification *notif;
403         struct iwl_mvm_internal_rxq_notif *internal_notif;
404
405         notif = (void *)pkt->data;
406         internal_notif = (void *)notif->payload;
407
408         if (internal_notif->sync) {
409                 if (mvm->queue_sync_cookie != internal_notif->cookie) {
410                         WARN_ONCE(1,
411                                   "Received expired RX queue sync message\n");
412                         return;
413                 }
414                 atomic_dec(&mvm->queue_sync_counter);
415         }
416
417         switch (internal_notif->type) {
418         case IWL_MVM_RXQ_EMPTY:
419                 break;
420         case IWL_MVM_RXQ_NOTIF_DEL_BA:
421                 break;
422         default:
423                 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
424         }
425 }
426
427 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm, u8 baid)
428 {
429         unsigned long now = jiffies;
430         unsigned long timeout;
431         struct iwl_mvm_baid_data *data;
432
433         rcu_read_lock();
434
435         data = rcu_dereference(mvm->baid_map[baid]);
436         if (WARN_ON(!data))
437                 goto out;
438
439         if (!data->timeout)
440                 goto out;
441
442         timeout = data->timeout;
443         /*
444          * Do not update last rx all the time to avoid cache bouncing
445          * between the rx queues.
446          * Update it every timeout. Worst case is the session will
447          * expire after ~ 2 * timeout, which doesn't matter that much.
448          */
449         if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
450                 /* Update is atomic */
451                 data->last_rx = now;
452
453 out:
454         rcu_read_unlock();
455 }
456
457 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
458                         struct iwl_rx_cmd_buffer *rxb, int queue)
459 {
460         struct ieee80211_rx_status *rx_status;
461         struct iwl_rx_packet *pkt = rxb_addr(rxb);
462         struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
463         struct ieee80211_hdr *hdr = (void *)(pkt->data + sizeof(*desc));
464         u32 len = le16_to_cpu(desc->mpdu_len);
465         u32 rate_n_flags = le32_to_cpu(desc->rate_n_flags);
466         struct ieee80211_sta *sta = NULL;
467         struct sk_buff *skb;
468         u8 crypt_len = 0;
469
470         /* Dont use dev_alloc_skb(), we'll have enough headroom once
471          * ieee80211_hdr pulled.
472          */
473         skb = alloc_skb(128, GFP_ATOMIC);
474         if (!skb) {
475                 IWL_ERR(mvm, "alloc_skb failed\n");
476                 return;
477         }
478
479         rx_status = IEEE80211_SKB_RXCB(skb);
480
481         if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, desc, queue, &crypt_len)) {
482                 kfree_skb(skb);
483                 return;
484         }
485
486         /*
487          * Keep packets with CRC errors (and with overrun) for monitor mode
488          * (otherwise the firmware discards them) but mark them as bad.
489          */
490         if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) ||
491             !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
492                 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
493                              le16_to_cpu(desc->status));
494                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
495         }
496
497         rx_status->mactime = le64_to_cpu(desc->tsf_on_air_rise);
498         rx_status->device_timestamp = le32_to_cpu(desc->gp2_on_air_rise);
499         rx_status->band = desc->channel > 14 ? NL80211_BAND_5GHZ :
500                                                NL80211_BAND_2GHZ;
501         rx_status->freq = ieee80211_channel_to_frequency(desc->channel,
502                                                          rx_status->band);
503         iwl_mvm_get_signal_strength(mvm, desc, rx_status);
504         /* TSF as indicated by the firmware is at INA time */
505         rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
506
507         rcu_read_lock();
508
509         if (le16_to_cpu(desc->status) & IWL_RX_MPDU_STATUS_SRC_STA_FOUND) {
510                 u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK;
511
512                 if (!WARN_ON_ONCE(id >= IWL_MVM_STATION_COUNT)) {
513                         sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
514                         if (IS_ERR(sta))
515                                 sta = NULL;
516                 }
517         } else if (!is_multicast_ether_addr(hdr->addr2)) {
518                 /*
519                  * This is fine since we prevent two stations with the same
520                  * address from being added.
521                  */
522                 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
523         }
524
525         if (sta) {
526                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
527                 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
528                                IWL_RX_MPDU_REORDER_BAID_MASK) >>
529                                IWL_RX_MPDU_REORDER_BAID_SHIFT);
530
531                 /*
532                  * We have tx blocked stations (with CS bit). If we heard
533                  * frames from a blocked station on a new channel we can
534                  * TX to it again.
535                  */
536                 if (unlikely(mvm->csa_tx_block_bcn_timeout))
537                         iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false);
538
539                 rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status);
540
541                 if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) &&
542                     ieee80211_is_beacon(hdr->frame_control)) {
543                         struct iwl_fw_dbg_trigger_tlv *trig;
544                         struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
545                         bool trig_check;
546                         s32 rssi;
547
548                         trig = iwl_fw_dbg_get_trigger(mvm->fw,
549                                                       FW_DBG_TRIGGER_RSSI);
550                         rssi_trig = (void *)trig->data;
551                         rssi = le32_to_cpu(rssi_trig->rssi);
552
553                         trig_check =
554                                 iwl_fw_dbg_trigger_check_stop(mvm, mvmsta->vif,
555                                                               trig);
556                         if (trig_check && rx_status->signal < rssi)
557                                 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL);
558                 }
559
560                 /* TODO: multi queue TCM */
561
562                 if (ieee80211_is_data(hdr->frame_control))
563                         iwl_mvm_rx_csum(sta, skb, desc);
564
565                 if (iwl_mvm_is_nonagg_dup(sta, queue, rx_status, hdr, desc)) {
566                         kfree_skb(skb);
567                         rcu_read_unlock();
568                         return;
569                 }
570
571                 /*
572                  * Our hardware de-aggregates AMSDUs but copies the mac header
573                  * as it to the de-aggregated MPDUs. We need to turn off the
574                  * AMSDU bit in the QoS control ourselves.
575                  */
576                 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
577                     !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
578                         u8 *qc = ieee80211_get_qos_ctl(hdr);
579
580                         *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
581                 }
582                 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID)
583                         iwl_mvm_agg_rx_received(mvm, baid);
584         }
585
586         /*
587          * TODO: PHY info.
588          * Verify we don't have the information in the MPDU descriptor and
589          * that it is not needed.
590          * Make sure for monitor mode that we are on default queue, update
591          * ampdu_ref and the rest of phy info then
592          */
593
594         /* Set up the HT phy flags */
595         switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
596         case RATE_MCS_CHAN_WIDTH_20:
597                 break;
598         case RATE_MCS_CHAN_WIDTH_40:
599                 rx_status->flag |= RX_FLAG_40MHZ;
600                 break;
601         case RATE_MCS_CHAN_WIDTH_80:
602                 rx_status->vht_flag |= RX_VHT_FLAG_80MHZ;
603                 break;
604         case RATE_MCS_CHAN_WIDTH_160:
605                 rx_status->vht_flag |= RX_VHT_FLAG_160MHZ;
606                 break;
607         }
608         if (rate_n_flags & RATE_MCS_SGI_MSK)
609                 rx_status->flag |= RX_FLAG_SHORT_GI;
610         if (rate_n_flags & RATE_HT_MCS_GF_MSK)
611                 rx_status->flag |= RX_FLAG_HT_GF;
612         if (rate_n_flags & RATE_MCS_LDPC_MSK)
613                 rx_status->flag |= RX_FLAG_LDPC;
614         if (rate_n_flags & RATE_MCS_HT_MSK) {
615                 u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >>
616                                 RATE_MCS_STBC_POS;
617                 rx_status->flag |= RX_FLAG_HT;
618                 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
619                 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT;
620         } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
621                 u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >>
622                                 RATE_MCS_STBC_POS;
623                 rx_status->vht_nss =
624                         ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
625                                                 RATE_VHT_MCS_NSS_POS) + 1;
626                 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
627                 rx_status->flag |= RX_FLAG_VHT;
628                 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT;
629                 if (rate_n_flags & RATE_MCS_BF_MSK)
630                         rx_status->vht_flag |= RX_VHT_FLAG_BF;
631         } else {
632                 rx_status->rate_idx =
633                         iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
634                                                             rx_status->band);
635         }
636
637         /* TODO: PHY info - update ampdu queue statistics (for debugfs) */
638         /* TODO: PHY info - gscan */
639
640         iwl_mvm_create_skb(skb, hdr, len, crypt_len, rxb);
641         iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
642         rcu_read_unlock();
643 }
644
645 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm,
646                               struct iwl_rx_cmd_buffer *rxb, int queue)
647 {
648         /* TODO */
649 }