1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2023 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_WARN(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 u8 tid = ieee80211_get_tid(hdr);
218
219 if (tid < IWL_MAX_TID_COUNT)
220 ac = tid_to_mac80211_ac[tid];
221 }
222
223 mvmsta = iwl_mvm_sta_from_mac80211(sta);
224 mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
225
226 if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
227 schedule_delayed_work(&mvm->tcm.work, 0);
228 mdata = &mvm->tcm.data[mac];
229 mdata->rx.pkts[ac]++;
230
231 /* count the airtime only once for each ampdu */
232 if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) {
233 mdata->rx.last_ampdu_ref = mvm->ampdu_ref;
234 mdata->rx.airtime += le16_to_cpu(phy_info->frame_time);
235 }
236
237 if (!(rate_n_flags & (RATE_MCS_HT_MSK_V1 | RATE_MCS_VHT_MSK_V1)))
238 return;
239
240 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
241
242 if (mdata->opened_rx_ba_sessions ||
243 mdata->uapsd_nonagg_detect.detected ||
244 (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd &&
245 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd &&
246 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd &&
247 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) ||
248 mvmsta->deflink.sta_id != mvmvif->deflink.ap_sta_id)
249 return;
250
251 if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
252 thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK_V1];
253 thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK_V1) >>
254 RATE_HT_MCS_NSS_POS_V1);
255 } else {
256 if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >=
257 ARRAY_SIZE(thresh_tpt)))
258 return;
259 thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK];
260 thr *= 1 + FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags);
261 }
262
263 thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) >>
264 RATE_MCS_CHAN_WIDTH_POS);
265
266 mdata->uapsd_nonagg_detect.rx_bytes += len;
267 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr);
268 }
269
iwl_mvm_rx_csum(struct ieee80211_sta * sta,struct sk_buff * skb,u32 status)270 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
271 struct sk_buff *skb,
272 u32 status)
273 {
274 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
275 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
276
277 if (mvmvif->features & NETIF_F_RXCSUM &&
278 status & RX_MPDU_RES_STATUS_CSUM_DONE &&
279 status & RX_MPDU_RES_STATUS_CSUM_OK)
280 skb->ip_summed = CHECKSUM_UNNECESSARY;
281 }
282
283 /*
284 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
285 *
286 * Handles the actual data of the Rx packet from the fw
287 */
iwl_mvm_rx_rx_mpdu(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb)288 void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
289 struct iwl_rx_cmd_buffer *rxb)
290 {
291 struct ieee80211_hdr *hdr;
292 struct ieee80211_rx_status *rx_status;
293 struct iwl_rx_packet *pkt = rxb_addr(rxb);
294 struct iwl_rx_phy_info *phy_info;
295 struct iwl_rx_mpdu_res_start *rx_res;
296 struct ieee80211_sta *sta = NULL;
297 struct sk_buff *skb;
298 u32 len, pkt_len = iwl_rx_packet_payload_len(pkt);
299 u32 rate_n_flags;
300 u32 rx_pkt_status;
301 u8 crypt_len = 0;
302
303 if (unlikely(pkt_len < sizeof(*rx_res))) {
304 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
305 return;
306 }
307
308 phy_info = &mvm->last_phy_info;
309 rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
310 hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
311 len = le16_to_cpu(rx_res->byte_count);
312
313 if (unlikely(len + sizeof(*rx_res) + sizeof(__le32) > pkt_len)) {
314 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
315 return;
316 }
317
318 rx_pkt_status = get_unaligned_le32((__le32 *)
319 (pkt->data + sizeof(*rx_res) + len));
320
321 /* Dont use dev_alloc_skb(), we'll have enough headroom once
322 * ieee80211_hdr pulled.
323 */
324 skb = alloc_skb(128, GFP_ATOMIC);
325 if (!skb) {
326 IWL_ERR(mvm, "alloc_skb failed\n");
327 return;
328 }
329
330 rx_status = IEEE80211_SKB_RXCB(skb);
331
332 /*
333 * Keep packets with CRC errors (and with overrun) for monitor mode
334 * (otherwise the firmware discards them) but mark them as bad.
335 */
336 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
337 !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
338 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
339 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
340 }
341
342 /* This will be used in several places later */
343 rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);
344
345 /* rx_status carries information about the packet to mac80211 */
346 rx_status->mactime = le64_to_cpu(phy_info->timestamp);
347 rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp);
348 rx_status->band =
349 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
350 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
351 rx_status->freq =
352 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
353 rx_status->band);
354
355 /* TSF as indicated by the firmware is at INA time */
356 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
357
358 iwl_mvm_get_signal_strength(mvm, phy_info, rx_status);
359
360 IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal,
361 (unsigned long long)rx_status->mactime);
362
363 rcu_read_lock();
364 if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) {
365 u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK;
366
367 id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT;
368
369 if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) {
370 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
371 if (IS_ERR(sta))
372 sta = NULL;
373 }
374 } else if (!is_multicast_ether_addr(hdr->addr2)) {
375 /* This is fine since we prevent two stations with the same
376 * address from being added.
377 */
378 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
379 }
380
381 if (sta) {
382 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
383 struct ieee80211_vif *vif = mvmsta->vif;
384 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
385
386 /*
387 * Don't even try to decrypt a MCAST frame that was received
388 * before the managed vif is authorized, we'd fail anyway.
389 */
390 if (is_multicast_ether_addr(hdr->addr1) &&
391 vif->type == NL80211_IFTYPE_STATION &&
392 !mvmvif->authorized &&
393 ieee80211_has_protected(hdr->frame_control)) {
394 IWL_DEBUG_DROP(mvm, "MCAST before the vif is authorized\n");
395 kfree_skb(skb);
396 rcu_read_unlock();
397 return;
398 }
399 }
400
401 /*
402 * drop the packet if it has failed being decrypted by HW
403 */
404 if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status,
405 &crypt_len)) {
406 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
407 rx_pkt_status);
408 kfree_skb(skb);
409 rcu_read_unlock();
410 return;
411 }
412
413 if (sta) {
414 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
415 struct ieee80211_vif *tx_blocked_vif =
416 rcu_dereference(mvm->csa_tx_blocked_vif);
417 struct iwl_fw_dbg_trigger_tlv *trig;
418 struct ieee80211_vif *vif = mvmsta->vif;
419
420 /* We have tx blocked stations (with CS bit). If we heard
421 * frames from a blocked station on a new channel we can
422 * TX to it again.
423 */
424 if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) {
425 struct iwl_mvm_vif *mvmvif =
426 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
427
428 if (mvmvif->csa_target_freq == rx_status->freq)
429 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
430 false);
431 }
432
433 rs_update_last_rssi(mvm, mvmsta, rx_status);
434
435 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
436 ieee80211_vif_to_wdev(vif),
437 FW_DBG_TRIGGER_RSSI);
438
439 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
440 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
441 s32 rssi;
442
443 rssi_trig = (void *)trig->data;
444 rssi = le32_to_cpu(rssi_trig->rssi);
445
446 if (rx_status->signal < rssi)
447 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
448 NULL);
449 }
450
451 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
452 !is_multicast_ether_addr(hdr->addr1) &&
453 ieee80211_is_data(hdr->frame_control))
454 iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info,
455 rate_n_flags);
456
457 if (ieee80211_is_data(hdr->frame_control))
458 iwl_mvm_rx_csum(sta, skb, rx_pkt_status);
459 }
460 rcu_read_unlock();
461
462 /* set the preamble flag if appropriate */
463 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
464 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
465
466 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
467 /*
468 * We know which subframes of an A-MPDU belong
469 * together since we get a single PHY response
470 * from the firmware for all of them
471 */
472 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
473 rx_status->ampdu_reference = mvm->ampdu_ref;
474 }
475
476 /* Set up the HT phy flags */
477 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) {
478 case RATE_MCS_CHAN_WIDTH_20:
479 break;
480 case RATE_MCS_CHAN_WIDTH_40:
481 rx_status->bw = RATE_INFO_BW_40;
482 break;
483 case RATE_MCS_CHAN_WIDTH_80:
484 rx_status->bw = RATE_INFO_BW_80;
485 break;
486 case RATE_MCS_CHAN_WIDTH_160:
487 rx_status->bw = RATE_INFO_BW_160;
488 break;
489 }
490 if (!(rate_n_flags & RATE_MCS_CCK_MSK_V1) &&
491 rate_n_flags & RATE_MCS_SGI_MSK_V1)
492 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
493 if (rate_n_flags & RATE_HT_MCS_GF_MSK)
494 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
495 if (rate_n_flags & RATE_MCS_LDPC_MSK_V1)
496 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
497 if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
498 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
499 RATE_MCS_STBC_POS;
500 rx_status->encoding = RX_ENC_HT;
501 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1;
502 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
503 } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) {
504 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
505 RATE_MCS_STBC_POS;
506 rx_status->nss =
507 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags) + 1;
508 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
509 rx_status->encoding = RX_ENC_VHT;
510 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
511 if (rate_n_flags & RATE_MCS_BF_MSK)
512 rx_status->enc_flags |= RX_ENC_FLAG_BF;
513 } else {
514 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
515 rx_status->band);
516
517 if (WARN(rate < 0 || rate > 0xFF,
518 "Invalid rate flags 0x%x, band %d,\n",
519 rate_n_flags, rx_status->band)) {
520 kfree_skb(skb);
521 return;
522 }
523 rx_status->rate_idx = rate;
524 }
525
526 #ifdef CONFIG_IWLWIFI_DEBUGFS
527 iwl_mvm_update_frame_stats(mvm, rate_n_flags,
528 rx_status->flag & RX_FLAG_AMPDU_DETAILS);
529 #endif
530
531 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
532 ieee80211_is_probe_resp(hdr->frame_control)) &&
533 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED))
534 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
535
536 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
537 ieee80211_is_probe_resp(hdr->frame_control)))
538 rx_status->boottime_ns = ktime_get_boottime_ns();
539
540 iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len,
541 crypt_len, rxb);
542 }
543
544 struct iwl_mvm_stat_data {
545 struct iwl_mvm *mvm;
546 __le32 flags;
547 __le32 mac_id;
548 u8 beacon_filter_average_energy;
549 __le32 *beacon_counter;
550 u8 *beacon_average_energy;
551 };
552
553 struct iwl_mvm_stat_data_all_macs {
554 struct iwl_mvm *mvm;
555 __le32 flags;
556 struct iwl_statistics_ntfy_per_mac *per_mac_stats;
557 };
558
iwl_mvm_update_vif_sig(struct ieee80211_vif * vif,int sig)559 static void iwl_mvm_update_vif_sig(struct ieee80211_vif *vif, int sig)
560 {
561 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
562 struct iwl_mvm *mvm = mvmvif->mvm;
563 int thold = vif->bss_conf.cqm_rssi_thold;
564 int hyst = vif->bss_conf.cqm_rssi_hyst;
565 int last_event;
566
567 if (sig == 0) {
568 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n");
569 return;
570 }
571
572 mvmvif->bf_data.ave_beacon_signal = sig;
573
574 /* BT Coex */
575 if (mvmvif->bf_data.bt_coex_min_thold !=
576 mvmvif->bf_data.bt_coex_max_thold) {
577 last_event = mvmvif->bf_data.last_bt_coex_event;
578 if (sig > mvmvif->bf_data.bt_coex_max_thold &&
579 (last_event <= mvmvif->bf_data.bt_coex_min_thold ||
580 last_event == 0)) {
581 mvmvif->bf_data.last_bt_coex_event = sig;
582 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
583 sig);
584 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
585 } else if (sig < mvmvif->bf_data.bt_coex_min_thold &&
586 (last_event >= mvmvif->bf_data.bt_coex_max_thold ||
587 last_event == 0)) {
588 mvmvif->bf_data.last_bt_coex_event = sig;
589 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
590 sig);
591 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
592 }
593 }
594
595 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
596 return;
597
598 /* CQM Notification */
599 last_event = mvmvif->bf_data.last_cqm_event;
600 if (thold && sig < thold && (last_event == 0 ||
601 sig < last_event - hyst)) {
602 mvmvif->bf_data.last_cqm_event = sig;
603 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
604 sig);
605 ieee80211_cqm_rssi_notify(
606 vif,
607 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
608 sig,
609 GFP_KERNEL);
610 } else if (sig > thold &&
611 (last_event == 0 || sig > last_event + hyst)) {
612 mvmvif->bf_data.last_cqm_event = sig;
613 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
614 sig);
615 ieee80211_cqm_rssi_notify(
616 vif,
617 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
618 sig,
619 GFP_KERNEL);
620 }
621 }
622
iwl_mvm_stat_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)623 static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
624 struct ieee80211_vif *vif)
625 {
626 struct iwl_mvm_stat_data *data = _data;
627 int sig = -data->beacon_filter_average_energy;
628 u16 id = le32_to_cpu(data->mac_id);
629 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
630 u16 vif_id = mvmvif->id;
631
632 /* This doesn't need the MAC ID check since it's not taking the
633 * data copied into the "data" struct, but rather the data from
634 * the notification directly.
635 */
636 mvmvif->deflink.beacon_stats.num_beacons =
637 le32_to_cpu(data->beacon_counter[vif_id]);
638 mvmvif->deflink.beacon_stats.avg_signal =
639 -data->beacon_average_energy[vif_id];
640
641 if (mvmvif->id != id)
642 return;
643
644 if (vif->type != NL80211_IFTYPE_STATION)
645 return;
646
647 /* make sure that beacon statistics don't go backwards with TCM
648 * request to clear statistics
649 */
650 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
651 mvmvif->deflink.beacon_stats.accu_num_beacons +=
652 mvmvif->deflink.beacon_stats.num_beacons;
653
654 iwl_mvm_update_vif_sig(vif, sig);
655 }
656
iwl_mvm_stat_iterator_all_macs(void * _data,u8 * mac,struct ieee80211_vif * vif)657 static void iwl_mvm_stat_iterator_all_macs(void *_data, u8 *mac,
658 struct ieee80211_vif *vif)
659 {
660 struct iwl_mvm_stat_data_all_macs *data = _data;
661 struct iwl_statistics_ntfy_per_mac *mac_stats;
662 int sig;
663 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
664 u16 vif_id = mvmvif->id;
665
666 if (WARN_ONCE(vif_id >= MAC_INDEX_AUX, "invalid vif id: %d", vif_id))
667 return;
668
669 if (vif->type != NL80211_IFTYPE_STATION)
670 return;
671
672 mac_stats = &data->per_mac_stats[vif_id];
673
674 mvmvif->deflink.beacon_stats.num_beacons =
675 le32_to_cpu(mac_stats->beacon_counter);
676 mvmvif->deflink.beacon_stats.avg_signal =
677 -le32_to_cpu(mac_stats->beacon_average_energy);
678
679 /* make sure that beacon statistics don't go backwards with TCM
680 * request to clear statistics
681 */
682 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
683 mvmvif->deflink.beacon_stats.accu_num_beacons +=
684 mvmvif->deflink.beacon_stats.num_beacons;
685
686 sig = -le32_to_cpu(mac_stats->beacon_filter_average_energy);
687 iwl_mvm_update_vif_sig(vif, sig);
688 }
689
690 static inline void
iwl_mvm_rx_stats_check_trigger(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)691 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt)
692 {
693 struct iwl_fw_dbg_trigger_tlv *trig;
694 struct iwl_fw_dbg_trigger_stats *trig_stats;
695 u32 trig_offset, trig_thold;
696
697 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS);
698 if (!trig)
699 return;
700
701 trig_stats = (void *)trig->data;
702
703 trig_offset = le32_to_cpu(trig_stats->stop_offset);
704 trig_thold = le32_to_cpu(trig_stats->stop_threshold);
705
706 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt)))
707 return;
708
709 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold)
710 return;
711
712 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL);
713 }
714
iwl_mvm_stats_energy_iter(void * _data,struct ieee80211_sta * sta)715 static void iwl_mvm_stats_energy_iter(void *_data,
716 struct ieee80211_sta *sta)
717 {
718 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
719 u8 *energy = _data;
720 u32 sta_id = mvmsta->deflink.sta_id;
721
722 if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT_MAX, "sta_id %d >= %d",
723 sta_id, IWL_MVM_STATION_COUNT_MAX))
724 return;
725
726 if (energy[sta_id])
727 mvmsta->deflink.avg_energy = energy[sta_id];
728
729 }
730
731 static void
iwl_mvm_update_tcm_from_stats(struct iwl_mvm * mvm,__le32 * air_time_le,__le32 * rx_bytes_le)732 iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le,
733 __le32 *rx_bytes_le)
734 {
735 int i;
736
737 spin_lock(&mvm->tcm.lock);
738 for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {
739 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i];
740 u32 rx_bytes = le32_to_cpu(rx_bytes_le[i]);
741 u32 airtime = le32_to_cpu(air_time_le[i]);
742
743 mdata->rx.airtime += airtime;
744 mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes;
745 if (airtime) {
746 /* re-init every time to store rate from FW */
747 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
748 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate,
749 rx_bytes * 8 / airtime);
750 }
751 }
752 spin_unlock(&mvm->tcm.lock);
753 }
754
755 static void
iwl_mvm_stats_ver_15(struct iwl_mvm * mvm,struct iwl_statistics_operational_ntfy * stats)756 iwl_mvm_stats_ver_15(struct iwl_mvm *mvm,
757 struct iwl_statistics_operational_ntfy *stats)
758 {
759 struct iwl_mvm_stat_data_all_macs data = {
760 .mvm = mvm,
761 .flags = stats->flags,
762 .per_mac_stats = stats->per_mac_stats,
763 };
764
765 ieee80211_iterate_active_interfaces(mvm->hw,
766 IEEE80211_IFACE_ITER_NORMAL,
767 iwl_mvm_stat_iterator_all_macs,
768 &data);
769 }
770
771 static void
iwl_mvm_stats_ver_14(struct iwl_mvm * mvm,struct iwl_statistics_operational_ntfy_ver_14 * stats)772 iwl_mvm_stats_ver_14(struct iwl_mvm *mvm,
773 struct iwl_statistics_operational_ntfy_ver_14 *stats)
774 {
775 struct iwl_mvm_stat_data data = {
776 .mvm = mvm,
777 };
778
779 u8 beacon_average_energy[MAC_INDEX_AUX];
780 __le32 flags;
781 int i;
782
783 flags = stats->flags;
784
785 data.mac_id = stats->mac_id;
786 data.beacon_filter_average_energy =
787 le32_to_cpu(stats->beacon_filter_average_energy);
788 data.flags = flags;
789 data.beacon_counter = stats->beacon_counter;
790
791 for (i = 0; i < ARRAY_SIZE(beacon_average_energy); i++)
792 beacon_average_energy[i] =
793 le32_to_cpu(stats->beacon_average_energy[i]);
794
795 data.beacon_average_energy = beacon_average_energy;
796
797 ieee80211_iterate_active_interfaces(mvm->hw,
798 IEEE80211_IFACE_ITER_NORMAL,
799 iwl_mvm_stat_iterator,
800 &data);
801 }
802
iwl_mvm_verify_stats_len(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt,u32 expected_size)803 static bool iwl_mvm_verify_stats_len(struct iwl_mvm *mvm,
804 struct iwl_rx_packet *pkt,
805 u32 expected_size)
806 {
807 struct iwl_statistics_ntfy_hdr *hdr;
808
809 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) < expected_size,
810 "received invalid statistics size (%d)!, expected_size: %d\n",
811 iwl_rx_packet_payload_len(pkt), expected_size))
812 return false;
813
814 hdr = (void *)&pkt->data;
815
816 if (WARN_ONCE((hdr->type & IWL_STATISTICS_TYPE_MSK) != FW_STATISTICS_OPERATIONAL ||
817 hdr->version !=
818 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, STATISTICS_NOTIFICATION, 0),
819 "received unsupported hdr type %d, version %d\n",
820 hdr->type, hdr->version))
821 return false;
822
823 if (WARN_ONCE(le16_to_cpu(hdr->size) != expected_size,
824 "received invalid statistics size in header (%d)!, expected_size: %d\n",
825 le16_to_cpu(hdr->size), expected_size))
826 return false;
827
828 return true;
829 }
830
831 static void
iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)832 iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm *mvm,
833 struct iwl_rx_packet *pkt)
834 {
835 u8 average_energy[IWL_MVM_STATION_COUNT_MAX];
836 __le32 air_time[MAC_INDEX_AUX];
837 __le32 rx_bytes[MAC_INDEX_AUX];
838 __le32 flags = 0;
839 int i;
840 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
841 STATISTICS_NOTIFICATION, 0);
842
843 if (WARN_ONCE(notif_ver > 15,
844 "invalid statistics version id: %d\n", notif_ver))
845 return;
846
847 if (notif_ver == 14) {
848 struct iwl_statistics_operational_ntfy_ver_14 *stats =
849 (void *)pkt->data;
850
851 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
852 return;
853
854 iwl_mvm_stats_ver_14(mvm, stats);
855
856 flags = stats->flags;
857 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
858 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
859 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
860 mvm->radio_stats.on_time_scan =
861 le64_to_cpu(stats->on_time_scan);
862
863 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
864 average_energy[i] = le32_to_cpu(stats->average_energy[i]);
865
866 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
867 air_time[i] = stats->air_time[i];
868 rx_bytes[i] = stats->rx_bytes[i];
869 }
870 }
871
872 if (notif_ver == 15) {
873 struct iwl_statistics_operational_ntfy *stats =
874 (void *)pkt->data;
875
876 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
877 return;
878
879 iwl_mvm_stats_ver_15(mvm, stats);
880
881 flags = stats->flags;
882 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
883 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
884 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
885 mvm->radio_stats.on_time_scan =
886 le64_to_cpu(stats->on_time_scan);
887
888 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
889 average_energy[i] =
890 le32_to_cpu(stats->per_sta_stats[i].average_energy);
891
892 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
893 air_time[i] = stats->per_mac_stats[i].air_time;
894 rx_bytes[i] = stats->per_mac_stats[i].rx_bytes;
895 }
896 }
897
898 iwl_mvm_rx_stats_check_trigger(mvm, pkt);
899
900 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
901 average_energy);
902 /*
903 * Don't update in case the statistics are not cleared, since
904 * we will end up counting twice the same airtime, once in TCM
905 * request and once in statistics notification.
906 */
907 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
908 iwl_mvm_update_tcm_from_stats(mvm, air_time, rx_bytes);
909 }
910
iwl_mvm_handle_rx_statistics(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)911 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm,
912 struct iwl_rx_packet *pkt)
913 {
914 struct iwl_mvm_stat_data data = {
915 .mvm = mvm,
916 };
917 __le32 *bytes, *air_time, flags;
918 int expected_size;
919 u8 *energy;
920
921 /* From ver 14 and up we use TLV statistics format */
922 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
923 STATISTICS_NOTIFICATION, 0) >= 14)
924 return iwl_mvm_handle_rx_statistics_tlv(mvm, pkt);
925
926 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
927 if (iwl_mvm_has_new_rx_api(mvm))
928 expected_size = sizeof(struct iwl_notif_statistics_v11);
929 else
930 expected_size = sizeof(struct iwl_notif_statistics_v10);
931 } else {
932 expected_size = sizeof(struct iwl_notif_statistics);
933 }
934
935 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size,
936 "received invalid statistics size (%d)!\n",
937 iwl_rx_packet_payload_len(pkt)))
938 return;
939
940 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
941 struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data;
942
943 data.mac_id = stats->rx.general.mac_id;
944 data.beacon_filter_average_energy =
945 stats->general.common.beacon_filter_average_energy;
946
947 mvm->rx_stats_v3 = stats->rx;
948
949 mvm->radio_stats.rx_time =
950 le64_to_cpu(stats->general.common.rx_time);
951 mvm->radio_stats.tx_time =
952 le64_to_cpu(stats->general.common.tx_time);
953 mvm->radio_stats.on_time_rf =
954 le64_to_cpu(stats->general.common.on_time_rf);
955 mvm->radio_stats.on_time_scan =
956 le64_to_cpu(stats->general.common.on_time_scan);
957
958 data.beacon_counter = stats->general.beacon_counter;
959 data.beacon_average_energy =
960 stats->general.beacon_average_energy;
961 flags = stats->flag;
962 } else {
963 struct iwl_notif_statistics *stats = (void *)&pkt->data;
964
965 data.mac_id = stats->rx.general.mac_id;
966 data.beacon_filter_average_energy =
967 stats->general.common.beacon_filter_average_energy;
968
969 mvm->rx_stats = stats->rx;
970
971 mvm->radio_stats.rx_time =
972 le64_to_cpu(stats->general.common.rx_time);
973 mvm->radio_stats.tx_time =
974 le64_to_cpu(stats->general.common.tx_time);
975 mvm->radio_stats.on_time_rf =
976 le64_to_cpu(stats->general.common.on_time_rf);
977 mvm->radio_stats.on_time_scan =
978 le64_to_cpu(stats->general.common.on_time_scan);
979
980 data.beacon_counter = stats->general.beacon_counter;
981 data.beacon_average_energy =
982 stats->general.beacon_average_energy;
983 flags = stats->flag;
984 }
985 data.flags = flags;
986
987 iwl_mvm_rx_stats_check_trigger(mvm, pkt);
988
989 ieee80211_iterate_active_interfaces(mvm->hw,
990 IEEE80211_IFACE_ITER_NORMAL,
991 iwl_mvm_stat_iterator,
992 &data);
993
994 if (!iwl_mvm_has_new_rx_api(mvm))
995 return;
996
997 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
998 struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data;
999
1000 energy = (void *)&v11->load_stats.avg_energy;
1001 bytes = (void *)&v11->load_stats.byte_count;
1002 air_time = (void *)&v11->load_stats.air_time;
1003 } else {
1004 struct iwl_notif_statistics *stats = (void *)&pkt->data;
1005
1006 energy = (void *)&stats->load_stats.avg_energy;
1007 bytes = (void *)&stats->load_stats.byte_count;
1008 air_time = (void *)&stats->load_stats.air_time;
1009 }
1010 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1011 energy);
1012
1013 /*
1014 * Don't update in case the statistics are not cleared, since
1015 * we will end up counting twice the same airtime, once in TCM
1016 * request and once in statistics notification.
1017 */
1018 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1019 iwl_mvm_update_tcm_from_stats(mvm, air_time, bytes);
1020
1021 }
1022
iwl_mvm_rx_statistics(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1023 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1024 {
1025 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb));
1026 }
1027
iwl_mvm_window_status_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1028 void iwl_mvm_window_status_notif(struct iwl_mvm *mvm,
1029 struct iwl_rx_cmd_buffer *rxb)
1030 {
1031 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1032 struct iwl_ba_window_status_notif *notif = (void *)pkt->data;
1033 int i;
1034
1035 BUILD_BUG_ON(ARRAY_SIZE(notif->ra_tid) != BA_WINDOW_STREAMS_MAX);
1036 BUILD_BUG_ON(ARRAY_SIZE(notif->mpdu_rx_count) != BA_WINDOW_STREAMS_MAX);
1037 BUILD_BUG_ON(ARRAY_SIZE(notif->bitmap) != BA_WINDOW_STREAMS_MAX);
1038 BUILD_BUG_ON(ARRAY_SIZE(notif->start_seq_num) != BA_WINDOW_STREAMS_MAX);
1039
1040 rcu_read_lock();
1041 for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) {
1042 struct ieee80211_sta *sta;
1043 u8 sta_id, tid;
1044 u64 bitmap;
1045 u32 ssn;
1046 u16 ratid;
1047 u16 received_mpdu;
1048
1049 ratid = le16_to_cpu(notif->ra_tid[i]);
1050 /* check that this TID is valid */
1051 if (!(ratid & BA_WINDOW_STATUS_VALID_MSK))
1052 continue;
1053
1054 received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]);
1055 if (received_mpdu == 0)
1056 continue;
1057
1058 tid = ratid & BA_WINDOW_STATUS_TID_MSK;
1059 /* get the station */
1060 sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK)
1061 >> BA_WINDOW_STATUS_STA_ID_POS;
1062 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1063 if (IS_ERR_OR_NULL(sta))
1064 continue;
1065 bitmap = le64_to_cpu(notif->bitmap[i]);
1066 ssn = le32_to_cpu(notif->start_seq_num[i]);
1067
1068 /* update mac80211 with the bitmap for the reordering buffer */
1069 ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap,
1070 received_mpdu);
1071 }
1072 rcu_read_unlock();
1073 }
1074