1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7 #include <asm/unaligned.h>
8 #include <linux/etherdevice.h>
9 #include <linux/skbuff.h>
10 #include "iwl-trans.h"
11 #include "mvm.h"
12 #include "fw-api.h"
13
14 /*
15 * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler
16 *
17 * Copies the phy information in mvm->last_phy_info, it will be used when the
18 * actual data will come from the fw in the next packet.
19 */
iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)20 void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
21 {
22 struct iwl_rx_packet *pkt = rxb_addr(rxb);
23 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
24
25 if (unlikely(pkt_len < sizeof(mvm->last_phy_info)))
26 return;
27
28 memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info));
29 mvm->ampdu_ref++;
30
31 #ifdef CONFIG_IWLWIFI_DEBUGFS
32 if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
33 spin_lock(&mvm->drv_stats_lock);
34 mvm->drv_rx_stats.ampdu_count++;
35 spin_unlock(&mvm->drv_stats_lock);
36 }
37 #endif
38 }
39
40 /*
41 * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211
42 *
43 * Adds the rxb to a new skb and give it to mac80211
44 */
iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct napi_struct * napi,struct sk_buff * skb,struct ieee80211_hdr * hdr,u16 len,u8 crypt_len,struct iwl_rx_cmd_buffer * rxb)45 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
46 struct ieee80211_sta *sta,
47 struct napi_struct *napi,
48 struct sk_buff *skb,
49 struct ieee80211_hdr *hdr, u16 len,
50 u8 crypt_len,
51 struct iwl_rx_cmd_buffer *rxb)
52 {
53 unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
54 unsigned int fraglen;
55
56 /*
57 * The 'hdrlen' (plus the 8 bytes for the SNAP and the crypt_len,
58 * but those are all multiples of 4 long) all goes away, but we
59 * want the *end* of it, which is going to be the start of the IP
60 * header, to be aligned when it gets pulled in.
61 * The beginning of the skb->data is aligned on at least a 4-byte
62 * boundary after allocation. Everything here is aligned at least
63 * on a 2-byte boundary so we can just take hdrlen & 3 and pad by
64 * the result.
65 */
66 skb_reserve(skb, hdrlen & 3);
67
68 /* If frame is small enough to fit in skb->head, pull it completely.
69 * If not, only pull ieee80211_hdr (including crypto if present, and
70 * an additional 8 bytes for SNAP/ethertype, see below) so that
71 * splice() or TCP coalesce are more efficient.
72 *
73 * Since, in addition, ieee80211_data_to_8023() always pull in at
74 * least 8 bytes (possibly more for mesh) we can do the same here
75 * to save the cost of doing it later. That still doesn't pull in
76 * the actual IP header since the typical case has a SNAP header.
77 * If the latter changes (there are efforts in the standards group
78 * to do so) we should revisit this and ieee80211_data_to_8023().
79 */
80 hdrlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8;
81
82 skb_put_data(skb, hdr, hdrlen);
83 fraglen = len - hdrlen;
84
85 if (fraglen) {
86 int offset = (u8 *)hdr + hdrlen -
87 (u8 *)rxb_addr(rxb) + rxb_offset(rxb);
88
89 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
90 fraglen, rxb->truesize);
91 }
92
93 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
94 }
95
96 /*
97 * iwl_mvm_get_signal_strength - use new rx PHY INFO API
98 * values are reported by the fw as positive values - need to negate
99 * to obtain their dBM. Account for missing antennas by replacing 0
100 * values by -256dBm: practically 0 power and a non-feasible 8 bit value.
101 */
iwl_mvm_get_signal_strength(struct iwl_mvm * mvm,struct iwl_rx_phy_info * phy_info,struct ieee80211_rx_status * rx_status)102 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
103 struct iwl_rx_phy_info *phy_info,
104 struct ieee80211_rx_status *rx_status)
105 {
106 int energy_a, energy_b, max_energy;
107 u32 val;
108
109 val =
110 le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]);
111 energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >>
112 IWL_RX_INFO_ENERGY_ANT_A_POS;
113 energy_a = energy_a ? -energy_a : S8_MIN;
114 energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >>
115 IWL_RX_INFO_ENERGY_ANT_B_POS;
116 energy_b = energy_b ? -energy_b : S8_MIN;
117 max_energy = max(energy_a, energy_b);
118
119 IWL_DEBUG_STATS(mvm, "energy In A %d B %d , and max %d\n",
120 energy_a, energy_b, max_energy);
121
122 rx_status->signal = max_energy;
123 rx_status->chains = (le16_to_cpu(phy_info->phy_flags) &
124 RX_RES_PHY_FLAGS_ANTENNA)
125 >> RX_RES_PHY_FLAGS_ANTENNA_POS;
126 rx_status->chain_signal[0] = energy_a;
127 rx_status->chain_signal[1] = energy_b;
128 }
129
130 /*
131 * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format
132 * @mvm: the mvm object
133 * @hdr: 80211 header
134 * @stats: status in mac80211's format
135 * @rx_pkt_status: status coming from fw
136 *
137 * returns non 0 value if the packet should be dropped
138 */
iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm * mvm,struct ieee80211_hdr * hdr,struct ieee80211_rx_status * stats,u32 rx_pkt_status,u8 * crypt_len)139 static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm,
140 struct ieee80211_hdr *hdr,
141 struct ieee80211_rx_status *stats,
142 u32 rx_pkt_status,
143 u8 *crypt_len)
144 {
145 if (!ieee80211_has_protected(hdr->frame_control) ||
146 (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
147 RX_MPDU_RES_STATUS_SEC_NO_ENC)
148 return 0;
149
150 /* packet was encrypted with unknown alg */
151 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
152 RX_MPDU_RES_STATUS_SEC_ENC_ERR)
153 return 0;
154
155 switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) {
156 case RX_MPDU_RES_STATUS_SEC_CCM_ENC:
157 /* alg is CCM: check MIC only */
158 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
159 return -1;
160
161 stats->flag |= RX_FLAG_DECRYPTED;
162 *crypt_len = IEEE80211_CCMP_HDR_LEN;
163 return 0;
164
165 case RX_MPDU_RES_STATUS_SEC_TKIP_ENC:
166 /* Don't drop the frame and decrypt it in SW */
167 if (!fw_has_api(&mvm->fw->ucode_capa,
168 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
169 !(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK))
170 return 0;
171 *crypt_len = IEEE80211_TKIP_IV_LEN;
172 fallthrough;
173
174 case RX_MPDU_RES_STATUS_SEC_WEP_ENC:
175 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK))
176 return -1;
177
178 stats->flag |= RX_FLAG_DECRYPTED;
179 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
180 RX_MPDU_RES_STATUS_SEC_WEP_ENC)
181 *crypt_len = IEEE80211_WEP_IV_LEN;
182 return 0;
183
184 case RX_MPDU_RES_STATUS_SEC_EXT_ENC:
185 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
186 return -1;
187 stats->flag |= RX_FLAG_DECRYPTED;
188 return 0;
189
190 default:
191 /* Expected in monitor (not having the keys) */
192 if (!mvm->monitor_on)
193 IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
194 }
195
196 return 0;
197 }
198
iwl_mvm_rx_handle_tcm(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct ieee80211_hdr * hdr,u32 len,struct iwl_rx_phy_info * phy_info,u32 rate_n_flags)199 static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm,
200 struct ieee80211_sta *sta,
201 struct ieee80211_hdr *hdr, u32 len,
202 struct iwl_rx_phy_info *phy_info,
203 u32 rate_n_flags)
204 {
205 struct iwl_mvm_sta *mvmsta;
206 struct iwl_mvm_tcm_mac *mdata;
207 int mac;
208 int ac = IEEE80211_AC_BE; /* treat non-QoS as BE */
209 struct iwl_mvm_vif *mvmvif;
210 /* expected throughput in 100Kbps, single stream, 20 MHz */
211 static const u8 thresh_tpt[] = {
212 9, 18, 30, 42, 60, 78, 90, 96, 120, 135,
213 };
214 u16 thr;
215
216 if (ieee80211_is_data_qos(hdr->frame_control))
217 ac = tid_to_mac80211_ac[ieee80211_get_tid(hdr)];
218
219 mvmsta = iwl_mvm_sta_from_mac80211(sta);
220 mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
221
222 if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
223 schedule_delayed_work(&mvm->tcm.work, 0);
224 mdata = &mvm->tcm.data[mac];
225 mdata->rx.pkts[ac]++;
226
227 /* count the airtime only once for each ampdu */
228 if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) {
229 mdata->rx.last_ampdu_ref = mvm->ampdu_ref;
230 mdata->rx.airtime += le16_to_cpu(phy_info->frame_time);
231 }
232
233 if (!(rate_n_flags & (RATE_MCS_HT_MSK_V1 | RATE_MCS_VHT_MSK_V1)))
234 return;
235
236 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
237
238 if (mdata->opened_rx_ba_sessions ||
239 mdata->uapsd_nonagg_detect.detected ||
240 (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd &&
241 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd &&
242 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd &&
243 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) ||
244 mvmsta->sta_id != mvmvif->ap_sta_id)
245 return;
246
247 if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
248 thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK_V1];
249 thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK_V1) >>
250 RATE_HT_MCS_NSS_POS_V1);
251 } else {
252 if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >=
253 ARRAY_SIZE(thresh_tpt)))
254 return;
255 thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK];
256 thr *= 1 + ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
257 RATE_VHT_MCS_NSS_POS);
258 }
259
260 thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) >>
261 RATE_MCS_CHAN_WIDTH_POS);
262
263 mdata->uapsd_nonagg_detect.rx_bytes += len;
264 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr);
265 }
266
iwl_mvm_rx_csum(struct ieee80211_sta * sta,struct sk_buff * skb,u32 status)267 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
268 struct sk_buff *skb,
269 u32 status)
270 {
271 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
272 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
273
274 if (mvmvif->features & NETIF_F_RXCSUM &&
275 status & RX_MPDU_RES_STATUS_CSUM_DONE &&
276 status & RX_MPDU_RES_STATUS_CSUM_OK)
277 skb->ip_summed = CHECKSUM_UNNECESSARY;
278 }
279
280 /*
281 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
282 *
283 * Handles the actual data of the Rx packet from the fw
284 */
iwl_mvm_rx_rx_mpdu(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb)285 void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
286 struct iwl_rx_cmd_buffer *rxb)
287 {
288 struct ieee80211_hdr *hdr;
289 struct ieee80211_rx_status *rx_status;
290 struct iwl_rx_packet *pkt = rxb_addr(rxb);
291 struct iwl_rx_phy_info *phy_info;
292 struct iwl_rx_mpdu_res_start *rx_res;
293 struct ieee80211_sta *sta = NULL;
294 struct sk_buff *skb;
295 u32 len, pkt_len = iwl_rx_packet_payload_len(pkt);
296 u32 rate_n_flags;
297 u32 rx_pkt_status;
298 u8 crypt_len = 0;
299
300 if (unlikely(pkt_len < sizeof(*rx_res))) {
301 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
302 return;
303 }
304
305 phy_info = &mvm->last_phy_info;
306 rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
307 hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
308 len = le16_to_cpu(rx_res->byte_count);
309
310 if (unlikely(len + sizeof(*rx_res) + sizeof(__le32) > pkt_len)) {
311 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
312 return;
313 }
314
315 rx_pkt_status = get_unaligned_le32((__le32 *)
316 (pkt->data + sizeof(*rx_res) + len));
317
318 /* Dont use dev_alloc_skb(), we'll have enough headroom once
319 * ieee80211_hdr pulled.
320 */
321 skb = alloc_skb(128, GFP_ATOMIC);
322 if (!skb) {
323 IWL_ERR(mvm, "alloc_skb failed\n");
324 return;
325 }
326
327 rx_status = IEEE80211_SKB_RXCB(skb);
328
329 /*
330 * Keep packets with CRC errors (and with overrun) for monitor mode
331 * (otherwise the firmware discards them) but mark them as bad.
332 */
333 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
334 !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
335 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
336 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
337 }
338
339 /* This will be used in several places later */
340 rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);
341
342 /* rx_status carries information about the packet to mac80211 */
343 rx_status->mactime = le64_to_cpu(phy_info->timestamp);
344 rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp);
345 rx_status->band =
346 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
347 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
348 rx_status->freq =
349 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
350 rx_status->band);
351
352 /* TSF as indicated by the firmware is at INA time */
353 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
354
355 iwl_mvm_get_signal_strength(mvm, phy_info, rx_status);
356
357 IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal,
358 (unsigned long long)rx_status->mactime);
359
360 rcu_read_lock();
361 if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) {
362 u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK;
363
364 id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT;
365
366 if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) {
367 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
368 if (IS_ERR(sta))
369 sta = NULL;
370 }
371 } else if (!is_multicast_ether_addr(hdr->addr2)) {
372 /* This is fine since we prevent two stations with the same
373 * address from being added.
374 */
375 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
376 }
377
378 if (sta) {
379 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
380 struct ieee80211_vif *vif = mvmsta->vif;
381 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
382
383 /*
384 * Don't even try to decrypt a MCAST frame that was received
385 * before the managed vif is authorized, we'd fail anyway.
386 */
387 if (vif->type == NL80211_IFTYPE_STATION &&
388 !mvmvif->authorized &&
389 is_multicast_ether_addr(hdr->addr1)) {
390 IWL_DEBUG_DROP(mvm, "MCAST before the vif is authorized\n");
391 kfree_skb(skb);
392 rcu_read_unlock();
393 return;
394 }
395 }
396
397 /*
398 * drop the packet if it has failed being decrypted by HW
399 */
400 if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status,
401 &crypt_len)) {
402 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
403 rx_pkt_status);
404 kfree_skb(skb);
405 rcu_read_unlock();
406 return;
407 }
408
409 if (sta) {
410 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
411 struct ieee80211_vif *tx_blocked_vif =
412 rcu_dereference(mvm->csa_tx_blocked_vif);
413 struct iwl_fw_dbg_trigger_tlv *trig;
414 struct ieee80211_vif *vif = mvmsta->vif;
415
416 /* We have tx blocked stations (with CS bit). If we heard
417 * frames from a blocked station on a new channel we can
418 * TX to it again.
419 */
420 if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) {
421 struct iwl_mvm_vif *mvmvif =
422 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
423
424 if (mvmvif->csa_target_freq == rx_status->freq)
425 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
426 false);
427 }
428
429 rs_update_last_rssi(mvm, mvmsta, rx_status);
430
431 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
432 ieee80211_vif_to_wdev(vif),
433 FW_DBG_TRIGGER_RSSI);
434
435 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
436 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
437 s32 rssi;
438
439 rssi_trig = (void *)trig->data;
440 rssi = le32_to_cpu(rssi_trig->rssi);
441
442 if (rx_status->signal < rssi)
443 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
444 NULL);
445 }
446
447 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
448 !is_multicast_ether_addr(hdr->addr1) &&
449 ieee80211_is_data(hdr->frame_control))
450 iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info,
451 rate_n_flags);
452
453 if (ieee80211_is_data(hdr->frame_control))
454 iwl_mvm_rx_csum(sta, skb, rx_pkt_status);
455 }
456 rcu_read_unlock();
457
458 /* set the preamble flag if appropriate */
459 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
460 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
461
462 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
463 /*
464 * We know which subframes of an A-MPDU belong
465 * together since we get a single PHY response
466 * from the firmware for all of them
467 */
468 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
469 rx_status->ampdu_reference = mvm->ampdu_ref;
470 }
471
472 /* Set up the HT phy flags */
473 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) {
474 case RATE_MCS_CHAN_WIDTH_20:
475 break;
476 case RATE_MCS_CHAN_WIDTH_40:
477 rx_status->bw = RATE_INFO_BW_40;
478 break;
479 case RATE_MCS_CHAN_WIDTH_80:
480 rx_status->bw = RATE_INFO_BW_80;
481 break;
482 case RATE_MCS_CHAN_WIDTH_160:
483 rx_status->bw = RATE_INFO_BW_160;
484 break;
485 }
486 if (!(rate_n_flags & RATE_MCS_CCK_MSK_V1) &&
487 rate_n_flags & RATE_MCS_SGI_MSK_V1)
488 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
489 if (rate_n_flags & RATE_HT_MCS_GF_MSK)
490 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
491 if (rate_n_flags & RATE_MCS_LDPC_MSK_V1)
492 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
493 if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
494 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
495 RATE_MCS_STBC_POS;
496 rx_status->encoding = RX_ENC_HT;
497 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1;
498 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
499 } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) {
500 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
501 RATE_MCS_STBC_POS;
502 rx_status->nss =
503 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
504 RATE_VHT_MCS_NSS_POS) + 1;
505 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
506 rx_status->encoding = RX_ENC_VHT;
507 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
508 if (rate_n_flags & RATE_MCS_BF_MSK)
509 rx_status->enc_flags |= RX_ENC_FLAG_BF;
510 } else {
511 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
512 rx_status->band);
513
514 if (WARN(rate < 0 || rate > 0xFF,
515 "Invalid rate flags 0x%x, band %d,\n",
516 rate_n_flags, rx_status->band)) {
517 kfree_skb(skb);
518 return;
519 }
520 rx_status->rate_idx = rate;
521 }
522
523 #ifdef CONFIG_IWLWIFI_DEBUGFS
524 iwl_mvm_update_frame_stats(mvm, rate_n_flags,
525 rx_status->flag & RX_FLAG_AMPDU_DETAILS);
526 #endif
527
528 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
529 ieee80211_is_probe_resp(hdr->frame_control)) &&
530 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED))
531 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
532
533 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
534 ieee80211_is_probe_resp(hdr->frame_control)))
535 rx_status->boottime_ns = ktime_get_boottime_ns();
536
537 iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len,
538 crypt_len, rxb);
539 }
540
541 struct iwl_mvm_stat_data {
542 struct iwl_mvm *mvm;
543 __le32 flags;
544 __le32 mac_id;
545 u8 beacon_filter_average_energy;
546 __le32 *beacon_counter;
547 u8 *beacon_average_energy;
548 };
549
550 struct iwl_mvm_stat_data_all_macs {
551 struct iwl_mvm *mvm;
552 __le32 flags;
553 struct iwl_statistics_ntfy_per_mac *per_mac_stats;
554 };
555
iwl_mvm_update_vif_sig(struct ieee80211_vif * vif,int sig)556 static void iwl_mvm_update_vif_sig(struct ieee80211_vif *vif, int sig)
557 {
558 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
559 struct iwl_mvm *mvm = mvmvif->mvm;
560 int thold = vif->bss_conf.cqm_rssi_thold;
561 int hyst = vif->bss_conf.cqm_rssi_hyst;
562 int last_event;
563
564 if (sig == 0) {
565 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n");
566 return;
567 }
568
569 mvmvif->bf_data.ave_beacon_signal = sig;
570
571 /* BT Coex */
572 if (mvmvif->bf_data.bt_coex_min_thold !=
573 mvmvif->bf_data.bt_coex_max_thold) {
574 last_event = mvmvif->bf_data.last_bt_coex_event;
575 if (sig > mvmvif->bf_data.bt_coex_max_thold &&
576 (last_event <= mvmvif->bf_data.bt_coex_min_thold ||
577 last_event == 0)) {
578 mvmvif->bf_data.last_bt_coex_event = sig;
579 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
580 sig);
581 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
582 } else if (sig < mvmvif->bf_data.bt_coex_min_thold &&
583 (last_event >= mvmvif->bf_data.bt_coex_max_thold ||
584 last_event == 0)) {
585 mvmvif->bf_data.last_bt_coex_event = sig;
586 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
587 sig);
588 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
589 }
590 }
591
592 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
593 return;
594
595 /* CQM Notification */
596 last_event = mvmvif->bf_data.last_cqm_event;
597 if (thold && sig < thold && (last_event == 0 ||
598 sig < last_event - hyst)) {
599 mvmvif->bf_data.last_cqm_event = sig;
600 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
601 sig);
602 ieee80211_cqm_rssi_notify(
603 vif,
604 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
605 sig,
606 GFP_KERNEL);
607 } else if (sig > thold &&
608 (last_event == 0 || sig > last_event + hyst)) {
609 mvmvif->bf_data.last_cqm_event = sig;
610 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
611 sig);
612 ieee80211_cqm_rssi_notify(
613 vif,
614 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
615 sig,
616 GFP_KERNEL);
617 }
618 }
619
iwl_mvm_stat_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)620 static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
621 struct ieee80211_vif *vif)
622 {
623 struct iwl_mvm_stat_data *data = _data;
624 int sig = -data->beacon_filter_average_energy;
625 u16 id = le32_to_cpu(data->mac_id);
626 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
627 u16 vif_id = mvmvif->id;
628
629 /* This doesn't need the MAC ID check since it's not taking the
630 * data copied into the "data" struct, but rather the data from
631 * the notification directly.
632 */
633 mvmvif->beacon_stats.num_beacons =
634 le32_to_cpu(data->beacon_counter[vif_id]);
635 mvmvif->beacon_stats.avg_signal =
636 -data->beacon_average_energy[vif_id];
637
638 if (mvmvif->id != id)
639 return;
640
641 if (vif->type != NL80211_IFTYPE_STATION)
642 return;
643
644 /* make sure that beacon statistics don't go backwards with TCM
645 * request to clear statistics
646 */
647 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
648 mvmvif->beacon_stats.accu_num_beacons +=
649 mvmvif->beacon_stats.num_beacons;
650
651 iwl_mvm_update_vif_sig(vif, sig);
652 }
653
iwl_mvm_stat_iterator_all_macs(void * _data,u8 * mac,struct ieee80211_vif * vif)654 static void iwl_mvm_stat_iterator_all_macs(void *_data, u8 *mac,
655 struct ieee80211_vif *vif)
656 {
657 struct iwl_mvm_stat_data_all_macs *data = _data;
658 struct iwl_statistics_ntfy_per_mac *mac_stats;
659 int sig;
660 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
661 u16 vif_id = mvmvif->id;
662
663 if (WARN_ONCE(vif_id >= MAC_INDEX_AUX, "invalid vif id: %d", vif_id))
664 return;
665
666 if (vif->type != NL80211_IFTYPE_STATION)
667 return;
668
669 mac_stats = &data->per_mac_stats[vif_id];
670
671 mvmvif->beacon_stats.num_beacons =
672 le32_to_cpu(mac_stats->beacon_counter);
673 mvmvif->beacon_stats.avg_signal =
674 -le32_to_cpu(mac_stats->beacon_average_energy);
675
676 /* make sure that beacon statistics don't go backwards with TCM
677 * request to clear statistics
678 */
679 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
680 mvmvif->beacon_stats.accu_num_beacons +=
681 mvmvif->beacon_stats.num_beacons;
682
683 sig = -le32_to_cpu(mac_stats->beacon_filter_average_energy);
684 iwl_mvm_update_vif_sig(vif, sig);
685 }
686
687 static inline void
iwl_mvm_rx_stats_check_trigger(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)688 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt)
689 {
690 struct iwl_fw_dbg_trigger_tlv *trig;
691 struct iwl_fw_dbg_trigger_stats *trig_stats;
692 u32 trig_offset, trig_thold;
693
694 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS);
695 if (!trig)
696 return;
697
698 trig_stats = (void *)trig->data;
699
700 trig_offset = le32_to_cpu(trig_stats->stop_offset);
701 trig_thold = le32_to_cpu(trig_stats->stop_threshold);
702
703 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt)))
704 return;
705
706 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold)
707 return;
708
709 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL);
710 }
711
iwl_mvm_stats_energy_iter(void * _data,struct ieee80211_sta * sta)712 static void iwl_mvm_stats_energy_iter(void *_data,
713 struct ieee80211_sta *sta)
714 {
715 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
716 u8 *energy = _data;
717 u32 sta_id = mvmsta->sta_id;
718
719 if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT_MAX, "sta_id %d >= %d",
720 sta_id, IWL_MVM_STATION_COUNT_MAX))
721 return;
722
723 if (energy[sta_id])
724 mvmsta->avg_energy = energy[sta_id];
725
726 }
727
728 static void
iwl_mvm_update_tcm_from_stats(struct iwl_mvm * mvm,__le32 * air_time_le,__le32 * rx_bytes_le)729 iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le,
730 __le32 *rx_bytes_le)
731 {
732 int i;
733
734 spin_lock(&mvm->tcm.lock);
735 for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {
736 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i];
737 u32 rx_bytes = le32_to_cpu(rx_bytes_le[i]);
738 u32 airtime = le32_to_cpu(air_time_le[i]);
739
740 mdata->rx.airtime += airtime;
741 mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes;
742 if (airtime) {
743 /* re-init every time to store rate from FW */
744 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
745 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate,
746 rx_bytes * 8 / airtime);
747 }
748 }
749 spin_unlock(&mvm->tcm.lock);
750 }
751
752 static void
iwl_mvm_stats_ver_15(struct iwl_mvm * mvm,struct iwl_statistics_operational_ntfy * stats)753 iwl_mvm_stats_ver_15(struct iwl_mvm *mvm,
754 struct iwl_statistics_operational_ntfy *stats)
755 {
756 struct iwl_mvm_stat_data_all_macs data = {
757 .mvm = mvm,
758 .flags = stats->flags,
759 .per_mac_stats = stats->per_mac_stats,
760 };
761
762 ieee80211_iterate_active_interfaces(mvm->hw,
763 IEEE80211_IFACE_ITER_NORMAL,
764 iwl_mvm_stat_iterator_all_macs,
765 &data);
766 }
767
768 static void
iwl_mvm_stats_ver_14(struct iwl_mvm * mvm,struct iwl_statistics_operational_ntfy_ver_14 * stats)769 iwl_mvm_stats_ver_14(struct iwl_mvm *mvm,
770 struct iwl_statistics_operational_ntfy_ver_14 *stats)
771 {
772 struct iwl_mvm_stat_data data = {
773 .mvm = mvm,
774 };
775
776 u8 beacon_average_energy[MAC_INDEX_AUX];
777 __le32 flags;
778 int i;
779
780 flags = stats->flags;
781
782 data.mac_id = stats->mac_id;
783 data.beacon_filter_average_energy =
784 le32_to_cpu(stats->beacon_filter_average_energy);
785 data.flags = flags;
786 data.beacon_counter = stats->beacon_counter;
787
788 for (i = 0; i < ARRAY_SIZE(beacon_average_energy); i++)
789 beacon_average_energy[i] =
790 le32_to_cpu(stats->beacon_average_energy[i]);
791
792 data.beacon_average_energy = beacon_average_energy;
793
794 ieee80211_iterate_active_interfaces(mvm->hw,
795 IEEE80211_IFACE_ITER_NORMAL,
796 iwl_mvm_stat_iterator,
797 &data);
798 }
799
iwl_mvm_verify_stats_len(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt,u32 expected_size)800 static bool iwl_mvm_verify_stats_len(struct iwl_mvm *mvm,
801 struct iwl_rx_packet *pkt,
802 u32 expected_size)
803 {
804 struct iwl_statistics_ntfy_hdr *hdr;
805
806 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) < expected_size,
807 "received invalid statistics size (%d)!, expected_size: %d\n",
808 iwl_rx_packet_payload_len(pkt), expected_size))
809 return false;
810
811 hdr = (void *)&pkt->data;
812
813 if (WARN_ONCE((hdr->type & IWL_STATISTICS_TYPE_MSK) != FW_STATISTICS_OPERATIONAL ||
814 hdr->version !=
815 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, STATISTICS_NOTIFICATION, 0),
816 "received unsupported hdr type %d, version %d\n",
817 hdr->type, hdr->version))
818 return false;
819
820 if (WARN_ONCE(le16_to_cpu(hdr->size) != expected_size,
821 "received invalid statistics size in header (%d)!, expected_size: %d\n",
822 le16_to_cpu(hdr->size), expected_size))
823 return false;
824
825 return true;
826 }
827
828 static void
iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)829 iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm *mvm,
830 struct iwl_rx_packet *pkt)
831 {
832 u8 average_energy[IWL_MVM_STATION_COUNT_MAX];
833 __le32 air_time[MAC_INDEX_AUX];
834 __le32 rx_bytes[MAC_INDEX_AUX];
835 __le32 flags = 0;
836 int i;
837 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
838 STATISTICS_NOTIFICATION, 0);
839
840 if (WARN_ONCE(notif_ver > 15,
841 "invalid statistics version id: %d\n", notif_ver))
842 return;
843
844 if (notif_ver == 14) {
845 struct iwl_statistics_operational_ntfy_ver_14 *stats =
846 (void *)pkt->data;
847
848 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
849 return;
850
851 iwl_mvm_stats_ver_14(mvm, stats);
852
853 flags = stats->flags;
854 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
855 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
856 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
857 mvm->radio_stats.on_time_scan =
858 le64_to_cpu(stats->on_time_scan);
859
860 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
861 average_energy[i] = le32_to_cpu(stats->average_energy[i]);
862
863 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
864 air_time[i] = stats->air_time[i];
865 rx_bytes[i] = stats->rx_bytes[i];
866 }
867 }
868
869 if (notif_ver == 15) {
870 struct iwl_statistics_operational_ntfy *stats =
871 (void *)pkt->data;
872
873 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
874 return;
875
876 iwl_mvm_stats_ver_15(mvm, stats);
877
878 flags = stats->flags;
879 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
880 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
881 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
882 mvm->radio_stats.on_time_scan =
883 le64_to_cpu(stats->on_time_scan);
884
885 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
886 average_energy[i] =
887 le32_to_cpu(stats->per_sta_stats[i].average_energy);
888
889 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
890 air_time[i] = stats->per_mac_stats[i].air_time;
891 rx_bytes[i] = stats->per_mac_stats[i].rx_bytes;
892 }
893 }
894
895 iwl_mvm_rx_stats_check_trigger(mvm, pkt);
896
897 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
898 average_energy);
899 /*
900 * Don't update in case the statistics are not cleared, since
901 * we will end up counting twice the same airtime, once in TCM
902 * request and once in statistics notification.
903 */
904 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
905 iwl_mvm_update_tcm_from_stats(mvm, air_time, rx_bytes);
906 }
907
iwl_mvm_handle_rx_statistics(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)908 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm,
909 struct iwl_rx_packet *pkt)
910 {
911 struct iwl_mvm_stat_data data = {
912 .mvm = mvm,
913 };
914 __le32 *bytes, *air_time, flags;
915 int expected_size;
916 u8 *energy;
917
918 /* From ver 14 and up we use TLV statistics format */
919 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
920 STATISTICS_NOTIFICATION, 0) >= 14)
921 return iwl_mvm_handle_rx_statistics_tlv(mvm, pkt);
922
923 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
924 if (iwl_mvm_has_new_rx_api(mvm))
925 expected_size = sizeof(struct iwl_notif_statistics_v11);
926 else
927 expected_size = sizeof(struct iwl_notif_statistics_v10);
928 } else {
929 expected_size = sizeof(struct iwl_notif_statistics);
930 }
931
932 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size,
933 "received invalid statistics size (%d)!\n",
934 iwl_rx_packet_payload_len(pkt)))
935 return;
936
937 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
938 struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data;
939
940 data.mac_id = stats->rx.general.mac_id;
941 data.beacon_filter_average_energy =
942 stats->general.common.beacon_filter_average_energy;
943
944 mvm->rx_stats_v3 = stats->rx;
945
946 mvm->radio_stats.rx_time =
947 le64_to_cpu(stats->general.common.rx_time);
948 mvm->radio_stats.tx_time =
949 le64_to_cpu(stats->general.common.tx_time);
950 mvm->radio_stats.on_time_rf =
951 le64_to_cpu(stats->general.common.on_time_rf);
952 mvm->radio_stats.on_time_scan =
953 le64_to_cpu(stats->general.common.on_time_scan);
954
955 data.beacon_counter = stats->general.beacon_counter;
956 data.beacon_average_energy =
957 stats->general.beacon_average_energy;
958 flags = stats->flag;
959 } else {
960 struct iwl_notif_statistics *stats = (void *)&pkt->data;
961
962 data.mac_id = stats->rx.general.mac_id;
963 data.beacon_filter_average_energy =
964 stats->general.common.beacon_filter_average_energy;
965
966 mvm->rx_stats = stats->rx;
967
968 mvm->radio_stats.rx_time =
969 le64_to_cpu(stats->general.common.rx_time);
970 mvm->radio_stats.tx_time =
971 le64_to_cpu(stats->general.common.tx_time);
972 mvm->radio_stats.on_time_rf =
973 le64_to_cpu(stats->general.common.on_time_rf);
974 mvm->radio_stats.on_time_scan =
975 le64_to_cpu(stats->general.common.on_time_scan);
976
977 data.beacon_counter = stats->general.beacon_counter;
978 data.beacon_average_energy =
979 stats->general.beacon_average_energy;
980 flags = stats->flag;
981 }
982 data.flags = flags;
983
984 iwl_mvm_rx_stats_check_trigger(mvm, pkt);
985
986 ieee80211_iterate_active_interfaces(mvm->hw,
987 IEEE80211_IFACE_ITER_NORMAL,
988 iwl_mvm_stat_iterator,
989 &data);
990
991 if (!iwl_mvm_has_new_rx_api(mvm))
992 return;
993
994 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
995 struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data;
996
997 energy = (void *)&v11->load_stats.avg_energy;
998 bytes = (void *)&v11->load_stats.byte_count;
999 air_time = (void *)&v11->load_stats.air_time;
1000 } else {
1001 struct iwl_notif_statistics *stats = (void *)&pkt->data;
1002
1003 energy = (void *)&stats->load_stats.avg_energy;
1004 bytes = (void *)&stats->load_stats.byte_count;
1005 air_time = (void *)&stats->load_stats.air_time;
1006 }
1007 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1008 energy);
1009
1010 /*
1011 * Don't update in case the statistics are not cleared, since
1012 * we will end up counting twice the same airtime, once in TCM
1013 * request and once in statistics notification.
1014 */
1015 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1016 iwl_mvm_update_tcm_from_stats(mvm, air_time, bytes);
1017
1018 }
1019
iwl_mvm_rx_statistics(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1020 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1021 {
1022 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb));
1023 }
1024
iwl_mvm_window_status_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1025 void iwl_mvm_window_status_notif(struct iwl_mvm *mvm,
1026 struct iwl_rx_cmd_buffer *rxb)
1027 {
1028 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1029 struct iwl_ba_window_status_notif *notif = (void *)pkt->data;
1030 int i;
1031
1032 BUILD_BUG_ON(ARRAY_SIZE(notif->ra_tid) != BA_WINDOW_STREAMS_MAX);
1033 BUILD_BUG_ON(ARRAY_SIZE(notif->mpdu_rx_count) != BA_WINDOW_STREAMS_MAX);
1034 BUILD_BUG_ON(ARRAY_SIZE(notif->bitmap) != BA_WINDOW_STREAMS_MAX);
1035 BUILD_BUG_ON(ARRAY_SIZE(notif->start_seq_num) != BA_WINDOW_STREAMS_MAX);
1036
1037 rcu_read_lock();
1038 for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) {
1039 struct ieee80211_sta *sta;
1040 u8 sta_id, tid;
1041 u64 bitmap;
1042 u32 ssn;
1043 u16 ratid;
1044 u16 received_mpdu;
1045
1046 ratid = le16_to_cpu(notif->ra_tid[i]);
1047 /* check that this TID is valid */
1048 if (!(ratid & BA_WINDOW_STATUS_VALID_MSK))
1049 continue;
1050
1051 received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]);
1052 if (received_mpdu == 0)
1053 continue;
1054
1055 tid = ratid & BA_WINDOW_STATUS_TID_MSK;
1056 /* get the station */
1057 sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK)
1058 >> BA_WINDOW_STATUS_STA_ID_POS;
1059 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1060 if (IS_ERR_OR_NULL(sta))
1061 continue;
1062 bitmap = le64_to_cpu(notif->bitmap[i]);
1063 ssn = le32_to_cpu(notif->start_seq_num[i]);
1064
1065 /* update mac80211 with the bitmap for the reordering buffer */
1066 ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap,
1067 received_mpdu);
1068 }
1069 rcu_read_unlock();
1070 }
1071