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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 - 2016 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * The full GNU General Public License is included in this distribution
22 * in the file called COPYING.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 * BSD LICENSE
29 *
30 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
31 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
32 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 *
39 * * Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * * Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in
43 * the documentation and/or other materials provided with the
44 * distribution.
45 * * Neither the name Intel Corporation nor the names of its
46 * contributors may be used to endorse or promote products derived
47 * from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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
68void 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
81static 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 */
155static 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 */
205static 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, skb, napi);
214}
215
216static 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
238static 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
291static 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
298 if (mvmvif->features & NETIF_F_RXCSUM &&
299 desc->l3l4_flags & cpu_to_le16(IWL_RX_L3L4_IP_HDR_CSUM_OK) &&
300 desc->l3l4_flags & cpu_to_le16(IWL_RX_L3L4_TCP_UDP_CSUM_OK))
301 skb->ip_summed = CHECKSUM_UNNECESSARY;
302}
303
304/*
305 * returns true if a packet outside BA session is a duplicate and
306 * should be dropped
307 */
308static bool iwl_mvm_is_nonagg_dup(struct ieee80211_sta *sta, int queue,
309 struct ieee80211_rx_status *rx_status,
310 struct ieee80211_hdr *hdr,
311 struct iwl_rx_mpdu_desc *desc)
312{
313 struct iwl_mvm_sta *mvm_sta;
314 struct iwl_mvm_rxq_dup_data *dup_data;
315 u8 baid, tid, sub_frame_idx;
316
317 if (WARN_ON(IS_ERR_OR_NULL(sta)))
318 return false;
319
320 baid = (le32_to_cpu(desc->reorder_data) &
321 IWL_RX_MPDU_REORDER_BAID_MASK) >>
322 IWL_RX_MPDU_REORDER_BAID_SHIFT;
323
324 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID)
325 return false;
326
327 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
328 dup_data = &mvm_sta->dup_data[queue];
329
330 /*
331 * Drop duplicate 802.11 retransmissions
332 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
333 */
334 if (ieee80211_is_ctl(hdr->frame_control) ||
335 ieee80211_is_qos_nullfunc(hdr->frame_control) ||
336 is_multicast_ether_addr(hdr->addr1)) {
337 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
338 return false;
339 }
340
341 if (ieee80211_is_data_qos(hdr->frame_control))
342 /* frame has qos control */
343 tid = *ieee80211_get_qos_ctl(hdr) &
344 IEEE80211_QOS_CTL_TID_MASK;
345 else
346 tid = IWL_MAX_TID_COUNT;
347
348 /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
349 sub_frame_idx = desc->amsdu_info & IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
350
351 if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
352 dup_data->last_seq[tid] == hdr->seq_ctrl &&
353 dup_data->last_sub_frame[tid] >= sub_frame_idx))
354 return true;
355
356 dup_data->last_seq[tid] = hdr->seq_ctrl;
357 dup_data->last_sub_frame[tid] = sub_frame_idx;
358
359 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
360
361 return false;
362}
363
364int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask,
365 const u8 *data, u32 count)
366{
367 struct iwl_rxq_sync_cmd *cmd;
368 u32 data_size = sizeof(*cmd) + count;
369 int ret;
370
371 /* should be DWORD aligned */
372 if (WARN_ON(count & 3 || count > IWL_MULTI_QUEUE_SYNC_MSG_MAX_SIZE))
373 return -EINVAL;
374
375 cmd = kzalloc(data_size, GFP_KERNEL);
376 if (!cmd)
377 return -ENOMEM;
378
379 cmd->rxq_mask = cpu_to_le32(rxq_mask);
380 cmd->count = cpu_to_le32(count);
381 cmd->flags = 0;
382 memcpy(cmd->payload, data, count);
383
384 ret = iwl_mvm_send_cmd_pdu(mvm,
385 WIDE_ID(DATA_PATH_GROUP,
386 TRIGGER_RX_QUEUES_NOTIF_CMD),
387 0, data_size, cmd);
388
389 kfree(cmd);
390 return ret;
391}
392
393void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
394 int queue)
395{
396 struct iwl_rx_packet *pkt = rxb_addr(rxb);
397 struct iwl_rxq_sync_notification *notif;
398 struct iwl_mvm_internal_rxq_notif *internal_notif;
399
400 notif = (void *)pkt->data;
401 internal_notif = (void *)notif->payload;
402
403 switch (internal_notif->type) {
404 case IWL_MVM_RXQ_NOTIF_DEL_BA:
405 /* TODO */
406 break;
407 default:
408 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
409 }
410}
411
412void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
413 struct iwl_rx_cmd_buffer *rxb, int queue)
414{
415 struct ieee80211_rx_status *rx_status;
416 struct iwl_rx_packet *pkt = rxb_addr(rxb);
417 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
418 struct ieee80211_hdr *hdr = (void *)(pkt->data + sizeof(*desc));
419 u32 len = le16_to_cpu(desc->mpdu_len);
420 u32 rate_n_flags = le32_to_cpu(desc->rate_n_flags);
421 struct ieee80211_sta *sta = NULL;
422 struct sk_buff *skb;
423 u8 crypt_len = 0;
424
425 /* Dont use dev_alloc_skb(), we'll have enough headroom once
426 * ieee80211_hdr pulled.
427 */
428 skb = alloc_skb(128, GFP_ATOMIC);
429 if (!skb) {
430 IWL_ERR(mvm, "alloc_skb failed\n");
431 return;
432 }
433
434 rx_status = IEEE80211_SKB_RXCB(skb);
435
436 if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, desc, queue, &crypt_len)) {
437 kfree_skb(skb);
438 return;
439 }
440
441 /*
442 * Keep packets with CRC errors (and with overrun) for monitor mode
443 * (otherwise the firmware discards them) but mark them as bad.
444 */
445 if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) ||
446 !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
447 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
448 le16_to_cpu(desc->status));
449 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
450 }
451
452 rx_status->mactime = le64_to_cpu(desc->tsf_on_air_rise);
453 rx_status->device_timestamp = le32_to_cpu(desc->gp2_on_air_rise);
454 rx_status->band = desc->channel > 14 ? IEEE80211_BAND_5GHZ :
455 IEEE80211_BAND_2GHZ;
456 rx_status->freq = ieee80211_channel_to_frequency(desc->channel,
457 rx_status->band);
458 iwl_mvm_get_signal_strength(mvm, desc, rx_status);
459 /* TSF as indicated by the firmware is at INA time */
460 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
461
462 rcu_read_lock();
463
464 if (le16_to_cpu(desc->status) & IWL_RX_MPDU_STATUS_SRC_STA_FOUND) {
465 u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK;
466
467 if (!WARN_ON_ONCE(id >= IWL_MVM_STATION_COUNT)) {
468 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
469 if (IS_ERR(sta))
470 sta = NULL;
471 }
472 } else if (!is_multicast_ether_addr(hdr->addr2)) {
473 /*
474 * This is fine since we prevent two stations with the same
475 * address from being added.
476 */
477 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
478 }
479
480 if (sta) {
481 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
482
483 /*
484 * We have tx blocked stations (with CS bit). If we heard
485 * frames from a blocked station on a new channel we can
486 * TX to it again.
487 */
488 if (unlikely(mvm->csa_tx_block_bcn_timeout))
489 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, false);
490
491 rs_update_last_rssi(mvm, &mvmsta->lq_sta, rx_status);
492
493 if (iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_RSSI) &&
494 ieee80211_is_beacon(hdr->frame_control)) {
495 struct iwl_fw_dbg_trigger_tlv *trig;
496 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
497 bool trig_check;
498 s32 rssi;
499
500 trig = iwl_fw_dbg_get_trigger(mvm->fw,
501 FW_DBG_TRIGGER_RSSI);
502 rssi_trig = (void *)trig->data;
503 rssi = le32_to_cpu(rssi_trig->rssi);
504
505 trig_check =
506 iwl_fw_dbg_trigger_check_stop(mvm, mvmsta->vif,
507 trig);
508 if (trig_check && rx_status->signal < rssi)
509 iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL);
510 }
511
512 /* TODO: multi queue TCM */
513
514 if (ieee80211_is_data(hdr->frame_control))
515 iwl_mvm_rx_csum(sta, skb, desc);
516
517 if (iwl_mvm_is_nonagg_dup(sta, queue, rx_status, hdr, desc)) {
518 kfree_skb(skb);
519 rcu_read_unlock();
520 return;
521 }
522
523 /*
524 * Our hardware de-aggregates AMSDUs but copies the mac header
525 * as it to the de-aggregated MPDUs. We need to turn off the
526 * AMSDU bit in the QoS control ourselves.
527 */
528 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
529 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
530 u8 *qc = ieee80211_get_qos_ctl(hdr);
531
532 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
533 }
534 }
535
536 /*
537 * TODO: PHY info.
538 * Verify we don't have the information in the MPDU descriptor and
539 * that it is not needed.
540 * Make sure for monitor mode that we are on default queue, update
541 * ampdu_ref and the rest of phy info then
542 */
543
544 /* Set up the HT phy flags */
545 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
546 case RATE_MCS_CHAN_WIDTH_20:
547 break;
548 case RATE_MCS_CHAN_WIDTH_40:
549 rx_status->flag |= RX_FLAG_40MHZ;
550 break;
551 case RATE_MCS_CHAN_WIDTH_80:
552 rx_status->vht_flag |= RX_VHT_FLAG_80MHZ;
553 break;
554 case RATE_MCS_CHAN_WIDTH_160:
555 rx_status->vht_flag |= RX_VHT_FLAG_160MHZ;
556 break;
557 }
558 if (rate_n_flags & RATE_MCS_SGI_MSK)
559 rx_status->flag |= RX_FLAG_SHORT_GI;
560 if (rate_n_flags & RATE_HT_MCS_GF_MSK)
561 rx_status->flag |= RX_FLAG_HT_GF;
562 if (rate_n_flags & RATE_MCS_LDPC_MSK)
563 rx_status->flag |= RX_FLAG_LDPC;
564 if (rate_n_flags & RATE_MCS_HT_MSK) {
565 u8 stbc = (rate_n_flags & RATE_MCS_HT_STBC_MSK) >>
566 RATE_MCS_STBC_POS;
567 rx_status->flag |= RX_FLAG_HT;
568 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
569 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT;
570 } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
571 u8 stbc = (rate_n_flags & RATE_MCS_VHT_STBC_MSK) >>
572 RATE_MCS_STBC_POS;
573 rx_status->vht_nss =
574 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
575 RATE_VHT_MCS_NSS_POS) + 1;
576 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
577 rx_status->flag |= RX_FLAG_VHT;
578 rx_status->flag |= stbc << RX_FLAG_STBC_SHIFT;
579 if (rate_n_flags & RATE_MCS_BF_MSK)
580 rx_status->vht_flag |= RX_VHT_FLAG_BF;
581 } else {
582 rx_status->rate_idx =
583 iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
584 rx_status->band);
585 }
586
587 /* TODO: PHY info - update ampdu queue statistics (for debugfs) */
588 /* TODO: PHY info - gscan */
589
590 iwl_mvm_create_skb(skb, hdr, len, crypt_len, rxb);
591 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
592 rcu_read_unlock();
593}
594
595void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm,
596 struct iwl_rx_cmd_buffer *rxb, int queue)
597{
598 /* TODO */
599}