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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
70
71
72
73
74
75void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
76{
77 struct iwl_rx_packet *pkt = rxb_addr(rxb);
78
79 memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info));
80 mvm->ampdu_ref++;
81
82#ifdef CONFIG_IWLWIFI_DEBUGFS
83 if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
84 spin_lock(&mvm->drv_stats_lock);
85 mvm->drv_rx_stats.ampdu_count++;
86 spin_unlock(&mvm->drv_stats_lock);
87 }
88#endif
89}
90
91
92
93
94
95
96static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
97 struct ieee80211_sta *sta,
98 struct napi_struct *napi,
99 struct sk_buff *skb,
100 struct ieee80211_hdr *hdr, u16 len,
101 u8 crypt_len,
102 struct iwl_rx_cmd_buffer *rxb)
103{
104 unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
105 unsigned int fraglen;
106
107
108
109
110
111
112
113
114
115
116
117 skb_reserve(skb, hdrlen & 3);
118
119
120
121
122
123
124
125
126
127
128
129
130
131 hdrlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8;
132
133 skb_put_data(skb, hdr, hdrlen);
134 fraglen = len - hdrlen;
135
136 if (fraglen) {
137 int offset = (void *)hdr + hdrlen -
138 rxb_addr(rxb) + rxb_offset(rxb);
139
140 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
141 fraglen, rxb->truesize);
142 }
143
144 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
145}
146
147
148
149
150
151
152
153static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
154 struct iwl_rx_phy_info *phy_info,
155 struct ieee80211_rx_status *rx_status)
156{
157 int energy_a, energy_b, energy_c, max_energy;
158 u32 val;
159
160 val =
161 le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]);
162 energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >>
163 IWL_RX_INFO_ENERGY_ANT_A_POS;
164 energy_a = energy_a ? -energy_a : S8_MIN;
165 energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >>
166 IWL_RX_INFO_ENERGY_ANT_B_POS;
167 energy_b = energy_b ? -energy_b : S8_MIN;
168 energy_c = (val & IWL_RX_INFO_ENERGY_ANT_C_MSK) >>
169 IWL_RX_INFO_ENERGY_ANT_C_POS;
170 energy_c = energy_c ? -energy_c : S8_MIN;
171 max_energy = max(energy_a, energy_b);
172 max_energy = max(max_energy, energy_c);
173
174 IWL_DEBUG_STATS(mvm, "energy In A %d B %d C %d , and max %d\n",
175 energy_a, energy_b, energy_c, max_energy);
176
177 rx_status->signal = max_energy;
178 rx_status->chains = (le16_to_cpu(phy_info->phy_flags) &
179 RX_RES_PHY_FLAGS_ANTENNA)
180 >> RX_RES_PHY_FLAGS_ANTENNA_POS;
181 rx_status->chain_signal[0] = energy_a;
182 rx_status->chain_signal[1] = energy_b;
183 rx_status->chain_signal[2] = energy_c;
184}
185
186
187
188
189
190
191
192
193
194
195static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm,
196 struct ieee80211_hdr *hdr,
197 struct ieee80211_rx_status *stats,
198 u32 rx_pkt_status,
199 u8 *crypt_len)
200{
201 if (!ieee80211_has_protected(hdr->frame_control) ||
202 (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
203 RX_MPDU_RES_STATUS_SEC_NO_ENC)
204 return 0;
205
206
207 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
208 RX_MPDU_RES_STATUS_SEC_ENC_ERR)
209 return 0;
210
211 switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) {
212 case RX_MPDU_RES_STATUS_SEC_CCM_ENC:
213
214 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
215 return -1;
216
217 stats->flag |= RX_FLAG_DECRYPTED;
218 *crypt_len = IEEE80211_CCMP_HDR_LEN;
219 return 0;
220
221 case RX_MPDU_RES_STATUS_SEC_TKIP_ENC:
222
223 if (!fw_has_api(&mvm->fw->ucode_capa,
224 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
225 !(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK))
226 return 0;
227 *crypt_len = IEEE80211_TKIP_IV_LEN;
228
229
230 case RX_MPDU_RES_STATUS_SEC_WEP_ENC:
231 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK))
232 return -1;
233
234 stats->flag |= RX_FLAG_DECRYPTED;
235 if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
236 RX_MPDU_RES_STATUS_SEC_WEP_ENC)
237 *crypt_len = IEEE80211_WEP_IV_LEN;
238 return 0;
239
240 case RX_MPDU_RES_STATUS_SEC_EXT_ENC:
241 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
242 return -1;
243 stats->flag |= RX_FLAG_DECRYPTED;
244 return 0;
245
246 default:
247
248 if (!mvm->monitor_on)
249 IWL_ERR(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
250 }
251
252 return 0;
253}
254
255static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm,
256 struct ieee80211_sta *sta,
257 struct ieee80211_hdr *hdr, u32 len,
258 struct iwl_rx_phy_info *phy_info,
259 u32 rate_n_flags)
260{
261 struct iwl_mvm_sta *mvmsta;
262 struct iwl_mvm_tcm_mac *mdata;
263 int mac;
264 int ac = IEEE80211_AC_BE;
265 struct iwl_mvm_vif *mvmvif;
266
267 static const u8 thresh_tpt[] = {
268 9, 18, 30, 42, 60, 78, 90, 96, 120, 135,
269 };
270 u16 thr;
271
272 if (ieee80211_is_data_qos(hdr->frame_control))
273 ac = tid_to_mac80211_ac[ieee80211_get_tid(hdr)];
274
275 mvmsta = iwl_mvm_sta_from_mac80211(sta);
276 mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
277
278 if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
279 schedule_delayed_work(&mvm->tcm.work, 0);
280 mdata = &mvm->tcm.data[mac];
281 mdata->rx.pkts[ac]++;
282
283
284 if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) {
285 mdata->rx.last_ampdu_ref = mvm->ampdu_ref;
286 mdata->rx.airtime += le16_to_cpu(phy_info->frame_time);
287 }
288
289 if (!(rate_n_flags & (RATE_MCS_HT_MSK | RATE_MCS_VHT_MSK)))
290 return;
291
292 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
293
294 if (mdata->opened_rx_ba_sessions ||
295 mdata->uapsd_nonagg_detect.detected ||
296 (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd &&
297 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd &&
298 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd &&
299 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd) ||
300 mvmsta->sta_id != mvmvif->ap_sta_id)
301 return;
302
303 if (rate_n_flags & RATE_MCS_HT_MSK) {
304 thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK];
305 thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK) >>
306 RATE_HT_MCS_NSS_POS);
307 } else {
308 if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >=
309 ARRAY_SIZE(thresh_tpt)))
310 return;
311 thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK];
312 thr *= 1 + ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
313 RATE_VHT_MCS_NSS_POS);
314 }
315
316 thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) >>
317 RATE_MCS_CHAN_WIDTH_POS);
318
319 mdata->uapsd_nonagg_detect.rx_bytes += len;
320 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr);
321}
322
323static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
324 struct sk_buff *skb,
325 u32 status)
326{
327 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
328 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
329
330 if (mvmvif->features & NETIF_F_RXCSUM &&
331 status & RX_MPDU_RES_STATUS_CSUM_DONE &&
332 status & RX_MPDU_RES_STATUS_CSUM_OK)
333 skb->ip_summed = CHECKSUM_UNNECESSARY;
334}
335
336
337
338
339
340
341void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
342 struct iwl_rx_cmd_buffer *rxb)
343{
344 struct ieee80211_hdr *hdr;
345 struct ieee80211_rx_status *rx_status;
346 struct iwl_rx_packet *pkt = rxb_addr(rxb);
347 struct iwl_rx_phy_info *phy_info;
348 struct iwl_rx_mpdu_res_start *rx_res;
349 struct ieee80211_sta *sta = NULL;
350 struct sk_buff *skb;
351 u32 len;
352 u32 rate_n_flags;
353 u32 rx_pkt_status;
354 u8 crypt_len = 0;
355
356 phy_info = &mvm->last_phy_info;
357 rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
358 hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
359 len = le16_to_cpu(rx_res->byte_count);
360 rx_pkt_status = le32_to_cpup((__le32 *)
361 (pkt->data + sizeof(*rx_res) + len));
362
363
364
365
366 skb = alloc_skb(128, GFP_ATOMIC);
367 if (!skb) {
368 IWL_ERR(mvm, "alloc_skb failed\n");
369 return;
370 }
371
372 rx_status = IEEE80211_SKB_RXCB(skb);
373
374
375
376
377 if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status,
378 &crypt_len)) {
379 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
380 rx_pkt_status);
381 kfree_skb(skb);
382 return;
383 }
384
385
386
387
388
389 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
390 !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
391 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
392 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
393 }
394
395
396 rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);
397
398
399 rx_status->mactime = le64_to_cpu(phy_info->timestamp);
400 rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp);
401 rx_status->band =
402 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
403 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
404 rx_status->freq =
405 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
406 rx_status->band);
407
408
409 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
410
411 iwl_mvm_get_signal_strength(mvm, phy_info, rx_status);
412
413 IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal,
414 (unsigned long long)rx_status->mactime);
415
416 rcu_read_lock();
417 if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) {
418 u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK;
419
420 id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT;
421
422 if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) {
423 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
424 if (IS_ERR(sta))
425 sta = NULL;
426 }
427 } else if (!is_multicast_ether_addr(hdr->addr2)) {
428
429
430
431 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
432 }
433
434 if (sta) {
435 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
436 struct ieee80211_vif *tx_blocked_vif =
437 rcu_dereference(mvm->csa_tx_blocked_vif);
438 struct iwl_fw_dbg_trigger_tlv *trig;
439 struct ieee80211_vif *vif = mvmsta->vif;
440
441
442
443
444
445 if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) {
446 struct iwl_mvm_vif *mvmvif =
447 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
448
449 if (mvmvif->csa_target_freq == rx_status->freq)
450 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
451 false);
452 }
453
454 rs_update_last_rssi(mvm, mvmsta, rx_status);
455
456 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
457 ieee80211_vif_to_wdev(vif),
458 FW_DBG_TRIGGER_RSSI);
459
460 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
461 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
462 s32 rssi;
463
464 rssi_trig = (void *)trig->data;
465 rssi = le32_to_cpu(rssi_trig->rssi);
466
467 if (rx_status->signal < rssi)
468 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
469 NULL);
470 }
471
472 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
473 !is_multicast_ether_addr(hdr->addr1) &&
474 ieee80211_is_data(hdr->frame_control))
475 iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info,
476 rate_n_flags);
477
478 if (ieee80211_is_data(hdr->frame_control))
479 iwl_mvm_rx_csum(sta, skb, rx_pkt_status);
480 }
481 rcu_read_unlock();
482
483
484 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
485 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
486
487 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
488
489
490
491
492
493 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
494 rx_status->ampdu_reference = mvm->ampdu_ref;
495 }
496
497
498 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
499 case RATE_MCS_CHAN_WIDTH_20:
500 break;
501 case RATE_MCS_CHAN_WIDTH_40:
502 rx_status->bw = RATE_INFO_BW_40;
503 break;
504 case RATE_MCS_CHAN_WIDTH_80:
505 rx_status->bw = RATE_INFO_BW_80;
506 break;
507 case RATE_MCS_CHAN_WIDTH_160:
508 rx_status->bw = RATE_INFO_BW_160;
509 break;
510 }
511 if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
512 rate_n_flags & RATE_MCS_SGI_MSK)
513 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
514 if (rate_n_flags & RATE_HT_MCS_GF_MSK)
515 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
516 if (rate_n_flags & RATE_MCS_LDPC_MSK)
517 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
518 if (rate_n_flags & RATE_MCS_HT_MSK) {
519 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
520 RATE_MCS_STBC_POS;
521 rx_status->encoding = RX_ENC_HT;
522 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
523 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
524 } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
525 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
526 RATE_MCS_STBC_POS;
527 rx_status->nss =
528 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
529 RATE_VHT_MCS_NSS_POS) + 1;
530 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
531 rx_status->encoding = RX_ENC_VHT;
532 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
533 if (rate_n_flags & RATE_MCS_BF_MSK)
534 rx_status->enc_flags |= RX_ENC_FLAG_BF;
535 } else {
536 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
537 rx_status->band);
538
539 if (WARN(rate < 0 || rate > 0xFF,
540 "Invalid rate flags 0x%x, band %d,\n",
541 rate_n_flags, rx_status->band)) {
542 kfree_skb(skb);
543 return;
544 }
545 rx_status->rate_idx = rate;
546 }
547
548#ifdef CONFIG_IWLWIFI_DEBUGFS
549 iwl_mvm_update_frame_stats(mvm, rate_n_flags,
550 rx_status->flag & RX_FLAG_AMPDU_DETAILS);
551#endif
552
553 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
554 ieee80211_is_probe_resp(hdr->frame_control)) &&
555 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED))
556 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
557
558 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
559 ieee80211_is_probe_resp(hdr->frame_control)))
560 rx_status->boottime_ns = ktime_get_boottime_ns();
561
562 iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len,
563 crypt_len, rxb);
564}
565
566struct iwl_mvm_stat_data {
567 struct iwl_mvm *mvm;
568 __le32 mac_id;
569 u8 beacon_filter_average_energy;
570 void *general;
571};
572
573static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
574 struct ieee80211_vif *vif)
575{
576 struct iwl_mvm_stat_data *data = _data;
577 struct iwl_mvm *mvm = data->mvm;
578 int sig = -data->beacon_filter_average_energy;
579 int last_event;
580 int thold = vif->bss_conf.cqm_rssi_thold;
581 int hyst = vif->bss_conf.cqm_rssi_hyst;
582 u16 id = le32_to_cpu(data->mac_id);
583 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
584 u16 vif_id = mvmvif->id;
585
586
587
588
589
590 if (iwl_mvm_has_new_rx_stats_api(mvm)) {
591 struct mvm_statistics_general *general =
592 data->general;
593
594 mvmvif->beacon_stats.num_beacons =
595 le32_to_cpu(general->beacon_counter[vif_id]);
596 mvmvif->beacon_stats.avg_signal =
597 -general->beacon_average_energy[vif_id];
598 } else {
599 struct mvm_statistics_general_v8 *general =
600 data->general;
601
602 mvmvif->beacon_stats.num_beacons =
603 le32_to_cpu(general->beacon_counter[vif_id]);
604 mvmvif->beacon_stats.avg_signal =
605 -general->beacon_average_energy[vif_id];
606 }
607
608 if (mvmvif->id != id)
609 return;
610
611 if (vif->type != NL80211_IFTYPE_STATION)
612 return;
613
614 if (sig == 0) {
615 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n");
616 return;
617 }
618
619 mvmvif->bf_data.ave_beacon_signal = sig;
620
621
622 if (mvmvif->bf_data.bt_coex_min_thold !=
623 mvmvif->bf_data.bt_coex_max_thold) {
624 last_event = mvmvif->bf_data.last_bt_coex_event;
625 if (sig > mvmvif->bf_data.bt_coex_max_thold &&
626 (last_event <= mvmvif->bf_data.bt_coex_min_thold ||
627 last_event == 0)) {
628 mvmvif->bf_data.last_bt_coex_event = sig;
629 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
630 sig);
631 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
632 } else if (sig < mvmvif->bf_data.bt_coex_min_thold &&
633 (last_event >= mvmvif->bf_data.bt_coex_max_thold ||
634 last_event == 0)) {
635 mvmvif->bf_data.last_bt_coex_event = sig;
636 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
637 sig);
638 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
639 }
640 }
641
642 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
643 return;
644
645
646 last_event = mvmvif->bf_data.last_cqm_event;
647 if (thold && sig < thold && (last_event == 0 ||
648 sig < last_event - hyst)) {
649 mvmvif->bf_data.last_cqm_event = sig;
650 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
651 sig);
652 ieee80211_cqm_rssi_notify(
653 vif,
654 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
655 sig,
656 GFP_KERNEL);
657 } else if (sig > thold &&
658 (last_event == 0 || sig > last_event + hyst)) {
659 mvmvif->bf_data.last_cqm_event = sig;
660 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
661 sig);
662 ieee80211_cqm_rssi_notify(
663 vif,
664 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
665 sig,
666 GFP_KERNEL);
667 }
668}
669
670static inline void
671iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt)
672{
673 struct iwl_fw_dbg_trigger_tlv *trig;
674 struct iwl_fw_dbg_trigger_stats *trig_stats;
675 u32 trig_offset, trig_thold;
676
677 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS);
678 if (!trig)
679 return;
680
681 trig_stats = (void *)trig->data;
682
683 trig_offset = le32_to_cpu(trig_stats->stop_offset);
684 trig_thold = le32_to_cpu(trig_stats->stop_threshold);
685
686 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt)))
687 return;
688
689 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold)
690 return;
691
692 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL);
693}
694
695void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm,
696 struct iwl_rx_packet *pkt)
697{
698 struct iwl_mvm_stat_data data = {
699 .mvm = mvm,
700 };
701 int expected_size;
702 int i;
703 u8 *energy;
704 __le32 *bytes;
705 __le32 *air_time;
706 __le32 flags;
707
708 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
709 if (iwl_mvm_has_new_rx_api(mvm))
710 expected_size = sizeof(struct iwl_notif_statistics_v11);
711 else
712 expected_size = sizeof(struct iwl_notif_statistics_v10);
713 } else {
714 expected_size = sizeof(struct iwl_notif_statistics);
715 }
716
717 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size,
718 "received invalid statistics size (%d)!\n",
719 iwl_rx_packet_payload_len(pkt)))
720 return;
721
722 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
723 struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data;
724
725 data.mac_id = stats->rx.general.mac_id;
726 data.beacon_filter_average_energy =
727 stats->general.common.beacon_filter_average_energy;
728
729 mvm->rx_stats_v3 = stats->rx;
730
731 mvm->radio_stats.rx_time =
732 le64_to_cpu(stats->general.common.rx_time);
733 mvm->radio_stats.tx_time =
734 le64_to_cpu(stats->general.common.tx_time);
735 mvm->radio_stats.on_time_rf =
736 le64_to_cpu(stats->general.common.on_time_rf);
737 mvm->radio_stats.on_time_scan =
738 le64_to_cpu(stats->general.common.on_time_scan);
739
740 data.general = &stats->general;
741
742 flags = stats->flag;
743 } else {
744 struct iwl_notif_statistics *stats = (void *)&pkt->data;
745
746 data.mac_id = stats->rx.general.mac_id;
747 data.beacon_filter_average_energy =
748 stats->general.common.beacon_filter_average_energy;
749
750 mvm->rx_stats = stats->rx;
751
752 mvm->radio_stats.rx_time =
753 le64_to_cpu(stats->general.common.rx_time);
754 mvm->radio_stats.tx_time =
755 le64_to_cpu(stats->general.common.tx_time);
756 mvm->radio_stats.on_time_rf =
757 le64_to_cpu(stats->general.common.on_time_rf);
758 mvm->radio_stats.on_time_scan =
759 le64_to_cpu(stats->general.common.on_time_scan);
760
761 data.general = &stats->general;
762
763 flags = stats->flag;
764 }
765
766 iwl_mvm_rx_stats_check_trigger(mvm, pkt);
767
768 ieee80211_iterate_active_interfaces(mvm->hw,
769 IEEE80211_IFACE_ITER_NORMAL,
770 iwl_mvm_stat_iterator,
771 &data);
772
773 if (!iwl_mvm_has_new_rx_api(mvm))
774 return;
775
776 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
777 struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data;
778
779 energy = (void *)&v11->load_stats.avg_energy;
780 bytes = (void *)&v11->load_stats.byte_count;
781 air_time = (void *)&v11->load_stats.air_time;
782 } else {
783 struct iwl_notif_statistics *stats = (void *)&pkt->data;
784
785 energy = (void *)&stats->load_stats.avg_energy;
786 bytes = (void *)&stats->load_stats.byte_count;
787 air_time = (void *)&stats->load_stats.air_time;
788 }
789
790 rcu_read_lock();
791 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
792 struct iwl_mvm_sta *sta;
793
794 if (!energy[i])
795 continue;
796
797 sta = iwl_mvm_sta_from_staid_rcu(mvm, i);
798 if (!sta)
799 continue;
800 sta->avg_energy = energy[i];
801 }
802 rcu_read_unlock();
803
804
805
806
807
808
809 if (!(le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR))
810 return;
811
812 spin_lock(&mvm->tcm.lock);
813 for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {
814 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i];
815 u32 airtime = le32_to_cpu(air_time[i]);
816 u32 rx_bytes = le32_to_cpu(bytes[i]);
817
818 mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes;
819 if (airtime) {
820
821 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
822 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate,
823 rx_bytes * 8 / airtime);
824 }
825
826 mdata->rx.airtime += airtime;
827 }
828 spin_unlock(&mvm->tcm.lock);
829}
830
831void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
832{
833 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb));
834}
835
836void iwl_mvm_window_status_notif(struct iwl_mvm *mvm,
837 struct iwl_rx_cmd_buffer *rxb)
838{
839 struct iwl_rx_packet *pkt = rxb_addr(rxb);
840 struct iwl_ba_window_status_notif *notif = (void *)pkt->data;
841 int i;
842 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
843
844 if (WARN_ONCE(pkt_len != sizeof(*notif),
845 "Received window status notification of wrong size (%u)\n",
846 pkt_len))
847 return;
848
849 rcu_read_lock();
850 for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) {
851 struct ieee80211_sta *sta;
852 u8 sta_id, tid;
853 u64 bitmap;
854 u32 ssn;
855 u16 ratid;
856 u16 received_mpdu;
857
858 ratid = le16_to_cpu(notif->ra_tid[i]);
859
860 if (!(ratid & BA_WINDOW_STATUS_VALID_MSK))
861 continue;
862
863 received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]);
864 if (received_mpdu == 0)
865 continue;
866
867 tid = ratid & BA_WINDOW_STATUS_TID_MSK;
868
869 sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK)
870 >> BA_WINDOW_STATUS_STA_ID_POS;
871 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
872 if (IS_ERR_OR_NULL(sta))
873 continue;
874 bitmap = le64_to_cpu(notif->bitmap[i]);
875 ssn = le32_to_cpu(notif->start_seq_num[i]);
876
877
878 ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap,
879 received_mpdu);
880 }
881 rcu_read_unlock();
882}
883