1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2025 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7 #include <linux/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 defined(__linux__)
193 if (!mvm->monitor_on)
194 IWL_WARN(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
195 #elif defined(__FreeBSD__)
196 if (!mvm->monitor_on && net_ratelimit())
197 IWL_WARN(mvm, "%s: Unhandled alg: 0x%x\n", __func__, rx_pkt_status);
198 #endif
199 }
200
201 return 0;
202 }
203
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)204 static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm,
205 struct ieee80211_sta *sta,
206 struct ieee80211_hdr *hdr, u32 len,
207 struct iwl_rx_phy_info *phy_info,
208 u32 rate_n_flags)
209 {
210 struct iwl_mvm_sta *mvmsta;
211 struct iwl_mvm_tcm_mac *mdata;
212 int mac;
213 int ac = IEEE80211_AC_BE; /* treat non-QoS as BE */
214 struct iwl_mvm_vif *mvmvif;
215 /* expected throughput in 100Kbps, single stream, 20 MHz */
216 static const u8 thresh_tpt[] = {
217 9, 18, 30, 42, 60, 78, 90, 96, 120, 135,
218 };
219 u16 thr;
220
221 if (ieee80211_is_data_qos(hdr->frame_control)) {
222 u8 tid = ieee80211_get_tid(hdr);
223
224 if (tid < IWL_MAX_TID_COUNT)
225 ac = tid_to_mac80211_ac[tid];
226 }
227
228 mvmsta = iwl_mvm_sta_from_mac80211(sta);
229 mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
230
231 if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
232 schedule_delayed_work(&mvm->tcm.work, 0);
233 mdata = &mvm->tcm.data[mac];
234 mdata->rx.pkts[ac]++;
235
236 /* count the airtime only once for each ampdu */
237 if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) {
238 mdata->rx.last_ampdu_ref = mvm->ampdu_ref;
239 mdata->rx.airtime += le16_to_cpu(phy_info->frame_time);
240 }
241
242 if (!(rate_n_flags & (RATE_MCS_HT_MSK_V1 | RATE_MCS_VHT_MSK_V1)))
243 return;
244
245 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
246
247 if (mdata->opened_rx_ba_sessions ||
248 mdata->uapsd_nonagg_detect.detected ||
249 (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd &&
250 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd &&
251 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd &&
252 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) ||
253 mvmsta->deflink.sta_id != mvmvif->deflink.ap_sta_id)
254 return;
255
256 if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
257 thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK_V1];
258 thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK_V1) >>
259 RATE_HT_MCS_NSS_POS_V1);
260 } else {
261 if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >=
262 ARRAY_SIZE(thresh_tpt)))
263 return;
264 thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK];
265 thr *= 1 + FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags);
266 }
267
268 thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) >>
269 RATE_MCS_CHAN_WIDTH_POS);
270
271 mdata->uapsd_nonagg_detect.rx_bytes += len;
272 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr);
273 }
274
iwl_mvm_rx_csum(struct ieee80211_sta * sta,struct sk_buff * skb,u32 status)275 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
276 struct sk_buff *skb,
277 u32 status)
278 {
279 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
280 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
281
282 if (mvmvif->features & NETIF_F_RXCSUM &&
283 status & RX_MPDU_RES_STATUS_CSUM_DONE &&
284 status & RX_MPDU_RES_STATUS_CSUM_OK)
285 skb->ip_summed = CHECKSUM_UNNECESSARY;
286 }
287
288 /*
289 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
290 *
291 * Handles the actual data of the Rx packet from the fw
292 */
iwl_mvm_rx_rx_mpdu(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb)293 void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
294 struct iwl_rx_cmd_buffer *rxb)
295 {
296 struct ieee80211_hdr *hdr;
297 struct ieee80211_rx_status *rx_status;
298 struct iwl_rx_packet *pkt = rxb_addr(rxb);
299 struct iwl_rx_phy_info *phy_info;
300 struct iwl_rx_mpdu_res_start *rx_res;
301 struct ieee80211_sta *sta = NULL;
302 struct sk_buff *skb;
303 u32 len, pkt_len = iwl_rx_packet_payload_len(pkt);
304 u32 rate_n_flags;
305 u32 rx_pkt_status;
306 u8 crypt_len = 0;
307
308 if (unlikely(pkt_len < sizeof(*rx_res))) {
309 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
310 return;
311 }
312
313 phy_info = &mvm->last_phy_info;
314 rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
315 hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
316 len = le16_to_cpu(rx_res->byte_count);
317
318 if (unlikely(len + sizeof(*rx_res) + sizeof(__le32) > pkt_len)) {
319 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
320 return;
321 }
322
323 rx_pkt_status = get_unaligned_le32((__le32 *)
324 (pkt->data + sizeof(*rx_res) + len));
325
326 /* Dont use dev_alloc_skb(), we'll have enough headroom once
327 * ieee80211_hdr pulled.
328 */
329 skb = alloc_skb(128, GFP_ATOMIC);
330 if (!skb) {
331 IWL_ERR(mvm, "alloc_skb failed\n");
332 return;
333 }
334
335 rx_status = IEEE80211_SKB_RXCB(skb);
336
337 /*
338 * Keep packets with CRC errors (and with overrun) for monitor mode
339 * (otherwise the firmware discards them) but mark them as bad.
340 */
341 if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
342 !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
343 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
344 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
345 }
346
347 /* This will be used in several places later */
348 rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);
349
350 /* rx_status carries information about the packet to mac80211 */
351 rx_status->mactime = le64_to_cpu(phy_info->timestamp);
352 rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp);
353 rx_status->band =
354 (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
355 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
356 rx_status->freq =
357 ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
358 rx_status->band);
359
360 /* TSF as indicated by the firmware is at INA time */
361 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
362
363 iwl_mvm_get_signal_strength(mvm, phy_info, rx_status);
364
365 IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal,
366 (unsigned long long)rx_status->mactime);
367
368 rcu_read_lock();
369 if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) {
370 u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK;
371
372 id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT;
373
374 if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) {
375 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
376 if (IS_ERR(sta))
377 sta = NULL;
378 }
379 } else if (!is_multicast_ether_addr(hdr->addr2)) {
380 /* This is fine since we prevent two stations with the same
381 * address from being added.
382 */
383 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
384 }
385
386 if (sta) {
387 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
388 struct ieee80211_vif *vif = mvmsta->vif;
389 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
390
391 /*
392 * Don't even try to decrypt a MCAST frame that was received
393 * before the managed vif is authorized, we'd fail anyway.
394 */
395 if (is_multicast_ether_addr(hdr->addr1) &&
396 vif->type == NL80211_IFTYPE_STATION &&
397 !mvmvif->authorized &&
398 ieee80211_has_protected(hdr->frame_control)) {
399 IWL_DEBUG_DROP(mvm, "MCAST before the vif is authorized\n");
400 kfree_skb(skb);
401 rcu_read_unlock();
402 return;
403 }
404 }
405
406 /*
407 * drop the packet if it has failed being decrypted by HW
408 */
409 if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status,
410 &crypt_len)) {
411 IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
412 rx_pkt_status);
413 kfree_skb(skb);
414 rcu_read_unlock();
415 return;
416 }
417
418 if (sta) {
419 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
420 struct ieee80211_vif *tx_blocked_vif =
421 rcu_dereference(mvm->csa_tx_blocked_vif);
422 struct iwl_fw_dbg_trigger_tlv *trig;
423 struct ieee80211_vif *vif = mvmsta->vif;
424
425 /* We have tx blocked stations (with CS bit). If we heard
426 * frames from a blocked station on a new channel we can
427 * TX to it again.
428 */
429 if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) {
430 struct iwl_mvm_vif *mvmvif =
431 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
432
433 if (mvmvif->csa_target_freq == rx_status->freq)
434 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
435 false);
436 }
437
438 rs_update_last_rssi(mvm, mvmsta, rx_status);
439
440 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
441 ieee80211_vif_to_wdev(vif),
442 FW_DBG_TRIGGER_RSSI);
443
444 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
445 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
446 s32 rssi;
447
448 rssi_trig = (void *)trig->data;
449 rssi = le32_to_cpu(rssi_trig->rssi);
450
451 if (rx_status->signal < rssi)
452 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
453 #if defined(__linux__)
454 NULL);
455 #elif defined(__FreeBSD__)
456 "");
457 #endif
458 }
459
460 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
461 !is_multicast_ether_addr(hdr->addr1) &&
462 ieee80211_is_data(hdr->frame_control))
463 iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info,
464 rate_n_flags);
465
466 if (ieee80211_is_data(hdr->frame_control))
467 iwl_mvm_rx_csum(sta, skb, rx_pkt_status);
468 }
469 rcu_read_unlock();
470
471 /* set the preamble flag if appropriate */
472 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
473 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
474
475 if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
476 /*
477 * We know which subframes of an A-MPDU belong
478 * together since we get a single PHY response
479 * from the firmware for all of them
480 */
481 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
482 rx_status->ampdu_reference = mvm->ampdu_ref;
483 }
484
485 /* Set up the HT phy flags */
486 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) {
487 case RATE_MCS_CHAN_WIDTH_20:
488 break;
489 case RATE_MCS_CHAN_WIDTH_40:
490 rx_status->bw = RATE_INFO_BW_40;
491 break;
492 case RATE_MCS_CHAN_WIDTH_80:
493 rx_status->bw = RATE_INFO_BW_80;
494 break;
495 case RATE_MCS_CHAN_WIDTH_160:
496 rx_status->bw = RATE_INFO_BW_160;
497 break;
498 }
499 if (!(rate_n_flags & RATE_MCS_CCK_MSK_V1) &&
500 rate_n_flags & RATE_MCS_SGI_MSK_V1)
501 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
502 if (rate_n_flags & RATE_MCS_LDPC_MSK_V1)
503 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
504 if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
505 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
506 RATE_MCS_STBC_POS;
507 rx_status->encoding = RX_ENC_HT;
508 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1;
509 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
510 } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) {
511 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
512 RATE_MCS_STBC_POS;
513 rx_status->nss =
514 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags) + 1;
515 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
516 rx_status->encoding = RX_ENC_VHT;
517 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
518 if (rate_n_flags & RATE_MCS_BF_MSK)
519 rx_status->enc_flags |= RX_ENC_FLAG_BF;
520 } else {
521 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
522 rx_status->band);
523
524 if (WARN(rate < 0 || rate > 0xFF,
525 "Invalid rate flags 0x%x, band %d,\n",
526 rate_n_flags, rx_status->band)) {
527 kfree_skb(skb);
528 return;
529 }
530 rx_status->rate_idx = rate;
531 }
532
533 #ifdef CONFIG_IWLWIFI_DEBUGFS
534 iwl_mvm_update_frame_stats(mvm, rate_n_flags,
535 rx_status->flag & RX_FLAG_AMPDU_DETAILS);
536 #endif
537
538 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
539 ieee80211_is_probe_resp(hdr->frame_control)) &&
540 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED))
541 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
542
543 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
544 ieee80211_is_probe_resp(hdr->frame_control)))
545 rx_status->boottime_ns = ktime_get_boottime_ns();
546
547 iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len,
548 crypt_len, rxb);
549 }
550
551 struct iwl_mvm_stat_data {
552 struct iwl_mvm *mvm;
553 __le32 flags;
554 __le32 mac_id;
555 u8 beacon_filter_average_energy;
556 __le32 *beacon_counter;
557 u8 *beacon_average_energy;
558 };
559
560 struct iwl_mvm_stat_data_all_macs {
561 struct iwl_mvm *mvm;
562 __le32 flags;
563 struct iwl_stats_ntfy_per_mac *per_mac;
564 };
565
iwl_mvm_update_link_sig(struct ieee80211_vif * vif,int sig,struct iwl_mvm_vif_link_info * link_info,struct ieee80211_bss_conf * bss_conf)566 static void iwl_mvm_update_link_sig(struct ieee80211_vif *vif, int sig,
567 struct iwl_mvm_vif_link_info *link_info,
568 struct ieee80211_bss_conf *bss_conf)
569 {
570 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
571 struct iwl_mvm *mvm = mvmvif->mvm;
572 int thold = bss_conf->cqm_rssi_thold;
573 int hyst = bss_conf->cqm_rssi_hyst;
574 int last_event;
575 s8 exit_esr_thresh;
576
577 if (sig == 0) {
578 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n");
579 return;
580 }
581
582 link_info->bf_data.ave_beacon_signal = sig;
583
584 /* BT Coex */
585 if (link_info->bf_data.bt_coex_min_thold !=
586 link_info->bf_data.bt_coex_max_thold) {
587 last_event = link_info->bf_data.last_bt_coex_event;
588 if (sig > link_info->bf_data.bt_coex_max_thold &&
589 (last_event <= link_info->bf_data.bt_coex_min_thold ||
590 last_event == 0)) {
591 link_info->bf_data.last_bt_coex_event = sig;
592 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
593 sig);
594 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
595 } else if (sig < link_info->bf_data.bt_coex_min_thold &&
596 (last_event >= link_info->bf_data.bt_coex_max_thold ||
597 last_event == 0)) {
598 link_info->bf_data.last_bt_coex_event = sig;
599 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
600 sig);
601 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
602 }
603 }
604
605 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
606 return;
607
608 /* CQM Notification */
609 last_event = link_info->bf_data.last_cqm_event;
610 if (thold && sig < thold && (last_event == 0 ||
611 sig < last_event - hyst)) {
612 link_info->bf_data.last_cqm_event = sig;
613 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
614 sig);
615 ieee80211_cqm_rssi_notify(
616 vif,
617 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
618 sig,
619 GFP_KERNEL);
620 } else if (sig > thold &&
621 (last_event == 0 || sig > last_event + hyst)) {
622 link_info->bf_data.last_cqm_event = sig;
623 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
624 sig);
625 ieee80211_cqm_rssi_notify(
626 vif,
627 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
628 sig,
629 GFP_KERNEL);
630 }
631
632 /* ESR recalculation */
633 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif))
634 return;
635
636 /* We're not in EMLSR and our signal is bad, try to switch link maybe */
637 if (sig < IWL_MVM_LOW_RSSI_MLO_SCAN_THRESH && !mvmvif->esr_active) {
638 iwl_mvm_int_mlo_scan(mvm, vif);
639 return;
640 }
641
642 /* We are in EMLSR, check if we need to exit */
643 exit_esr_thresh =
644 iwl_mvm_get_esr_rssi_thresh(mvm,
645 &bss_conf->chanreq.oper,
646 true);
647
648 if (sig < exit_esr_thresh)
649 iwl_mvm_exit_esr(mvm, vif, IWL_MVM_ESR_EXIT_LOW_RSSI,
650 iwl_mvm_get_other_link(vif,
651 bss_conf->link_id));
652 }
653
iwl_mvm_stat_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)654 static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
655 struct ieee80211_vif *vif)
656 {
657 struct iwl_mvm_stat_data *data = _data;
658 int sig = -data->beacon_filter_average_energy;
659 u16 id = le32_to_cpu(data->mac_id);
660 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
661 u16 vif_id = mvmvif->id;
662
663 /* This doesn't need the MAC ID check since it's not taking the
664 * data copied into the "data" struct, but rather the data from
665 * the notification directly.
666 */
667 mvmvif->deflink.beacon_stats.num_beacons =
668 le32_to_cpu(data->beacon_counter[vif_id]);
669 mvmvif->deflink.beacon_stats.avg_signal =
670 -data->beacon_average_energy[vif_id];
671
672 if (mvmvif->id != id)
673 return;
674
675 if (vif->type != NL80211_IFTYPE_STATION)
676 return;
677
678 /* make sure that beacon statistics don't go backwards with TCM
679 * request to clear statistics
680 */
681 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
682 mvmvif->deflink.beacon_stats.accu_num_beacons +=
683 mvmvif->deflink.beacon_stats.num_beacons;
684
685 /* This is used in pre-MLO API so use deflink */
686 iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf);
687 }
688
iwl_mvm_stat_iterator_all_macs(void * _data,u8 * mac,struct ieee80211_vif * vif)689 static void iwl_mvm_stat_iterator_all_macs(void *_data, u8 *mac,
690 struct ieee80211_vif *vif)
691 {
692 struct iwl_mvm_stat_data_all_macs *data = _data;
693 struct iwl_stats_ntfy_per_mac *mac_stats;
694 int sig;
695 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
696 u16 vif_id = mvmvif->id;
697
698 if (WARN_ONCE(vif_id >= MAC_INDEX_AUX, "invalid vif id: %d", vif_id))
699 return;
700
701 if (vif->type != NL80211_IFTYPE_STATION)
702 return;
703
704 mac_stats = &data->per_mac[vif_id];
705
706 mvmvif->deflink.beacon_stats.num_beacons =
707 le32_to_cpu(mac_stats->beacon_counter);
708 mvmvif->deflink.beacon_stats.avg_signal =
709 -le32_to_cpu(mac_stats->beacon_average_energy);
710
711 /* make sure that beacon statistics don't go backwards with TCM
712 * request to clear statistics
713 */
714 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
715 mvmvif->deflink.beacon_stats.accu_num_beacons +=
716 mvmvif->deflink.beacon_stats.num_beacons;
717
718 sig = -le32_to_cpu(mac_stats->beacon_filter_average_energy);
719
720 /* This is used in pre-MLO API so use deflink */
721 iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf);
722 }
723
724 static inline void
iwl_mvm_rx_stats_check_trigger(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)725 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt)
726 {
727 struct iwl_fw_dbg_trigger_tlv *trig;
728 struct iwl_fw_dbg_trigger_stats *trig_stats;
729 u32 trig_offset, trig_thold;
730
731 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS);
732 if (!trig)
733 return;
734
735 trig_stats = (void *)trig->data;
736
737 trig_offset = le32_to_cpu(trig_stats->stop_offset);
738 trig_thold = le32_to_cpu(trig_stats->stop_threshold);
739
740 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt)))
741 return;
742
743 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold)
744 return;
745
746 #if defined(__linux__)
747 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL);
748 #elif defined(__FreeBSD__)
749 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "");
750 #endif
751 }
752
iwl_mvm_stats_energy_iter(void * _data,struct ieee80211_sta * sta)753 static void iwl_mvm_stats_energy_iter(void *_data,
754 struct ieee80211_sta *sta)
755 {
756 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
757 u8 *energy = _data;
758 u32 sta_id = mvmsta->deflink.sta_id;
759
760 if (WARN_ONCE(sta_id >= IWL_STATION_COUNT_MAX, "sta_id %d >= %d",
761 sta_id, IWL_STATION_COUNT_MAX))
762 return;
763
764 if (energy[sta_id])
765 mvmsta->deflink.avg_energy = energy[sta_id];
766
767 }
768
769 static void
iwl_mvm_update_tcm_from_stats(struct iwl_mvm * mvm,__le32 * air_time_le,__le32 * rx_bytes_le)770 iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le,
771 __le32 *rx_bytes_le)
772 {
773 int i;
774
775 spin_lock(&mvm->tcm.lock);
776 for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {
777 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i];
778 u32 rx_bytes = le32_to_cpu(rx_bytes_le[i]);
779 u32 airtime = le32_to_cpu(air_time_le[i]);
780
781 mdata->rx.airtime += airtime;
782 mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes;
783 if (airtime) {
784 /* re-init every time to store rate from FW */
785 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
786 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate,
787 rx_bytes * 8 / airtime);
788 }
789 }
790 spin_unlock(&mvm->tcm.lock);
791 }
792
iwl_mvm_handle_per_phy_stats(struct iwl_mvm * mvm,struct iwl_stats_ntfy_per_phy * per_phy)793 static void iwl_mvm_handle_per_phy_stats(struct iwl_mvm *mvm,
794 struct iwl_stats_ntfy_per_phy *per_phy)
795 {
796 int i;
797
798 for (i = 0; i < NUM_PHY_CTX; i++) {
799 if (!mvm->phy_ctxts[i].ref)
800 continue;
801 mvm->phy_ctxts[i].channel_load_by_us =
802 le32_to_cpu(per_phy[i].channel_load_by_us);
803 mvm->phy_ctxts[i].channel_load_not_by_us =
804 le32_to_cpu(per_phy[i].channel_load_not_by_us);
805 }
806 }
807
808 static void
iwl_mvm_stats_ver_15(struct iwl_mvm * mvm,struct iwl_statistics_operational_ntfy * stats)809 iwl_mvm_stats_ver_15(struct iwl_mvm *mvm,
810 struct iwl_statistics_operational_ntfy *stats)
811 {
812 struct iwl_mvm_stat_data_all_macs data = {
813 .mvm = mvm,
814 .flags = stats->flags,
815 .per_mac = stats->per_mac,
816 };
817
818 ieee80211_iterate_active_interfaces(mvm->hw,
819 IEEE80211_IFACE_ITER_NORMAL,
820 iwl_mvm_stat_iterator_all_macs,
821 &data);
822 iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
823 }
824
825 static void
iwl_mvm_stats_ver_14(struct iwl_mvm * mvm,struct iwl_statistics_operational_ntfy_ver_14 * stats)826 iwl_mvm_stats_ver_14(struct iwl_mvm *mvm,
827 struct iwl_statistics_operational_ntfy_ver_14 *stats)
828 {
829 struct iwl_mvm_stat_data data = {
830 .mvm = mvm,
831 };
832
833 u8 beacon_average_energy[MAC_INDEX_AUX];
834 __le32 flags;
835 int i;
836
837 flags = stats->flags;
838
839 data.mac_id = stats->mac_id;
840 data.beacon_filter_average_energy =
841 le32_to_cpu(stats->beacon_filter_average_energy);
842 data.flags = flags;
843 data.beacon_counter = stats->beacon_counter;
844
845 for (i = 0; i < ARRAY_SIZE(beacon_average_energy); i++)
846 beacon_average_energy[i] =
847 le32_to_cpu(stats->beacon_average_energy[i]);
848
849 data.beacon_average_energy = beacon_average_energy;
850
851 ieee80211_iterate_active_interfaces(mvm->hw,
852 IEEE80211_IFACE_ITER_NORMAL,
853 iwl_mvm_stat_iterator,
854 &data);
855 }
856
iwl_mvm_verify_stats_len(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt,u32 expected_size)857 static bool iwl_mvm_verify_stats_len(struct iwl_mvm *mvm,
858 struct iwl_rx_packet *pkt,
859 u32 expected_size)
860 {
861 struct iwl_statistics_ntfy_hdr *hdr;
862
863 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) < expected_size,
864 "received invalid statistics size (%d)!, expected_size: %d\n",
865 iwl_rx_packet_payload_len(pkt), expected_size))
866 return false;
867
868 hdr = (void *)&pkt->data;
869
870 if (WARN_ONCE((hdr->type & IWL_STATISTICS_TYPE_MSK) != FW_STATISTICS_OPERATIONAL ||
871 hdr->version !=
872 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, STATISTICS_NOTIFICATION, 0),
873 "received unsupported hdr type %d, version %d\n",
874 hdr->type, hdr->version))
875 return false;
876
877 if (WARN_ONCE(le16_to_cpu(hdr->size) != expected_size,
878 "received invalid statistics size in header (%d)!, expected_size: %d\n",
879 le16_to_cpu(hdr->size), expected_size))
880 return false;
881
882 return true;
883 }
884
885 static void
iwl_mvm_stat_iterator_all_links(struct iwl_mvm * mvm,struct iwl_stats_ntfy_per_link * per_link)886 iwl_mvm_stat_iterator_all_links(struct iwl_mvm *mvm,
887 struct iwl_stats_ntfy_per_link *per_link)
888 {
889 u32 air_time[MAC_INDEX_AUX] = {};
890 u32 rx_bytes[MAC_INDEX_AUX] = {};
891 int fw_link_id;
892
893 /* driver uses link ID == MAC ID */
894 for (fw_link_id = 0; fw_link_id < ARRAY_SIZE(mvm->vif_id_to_mac);
895 fw_link_id++) {
896 struct iwl_stats_ntfy_per_link *link_stats;
897 struct iwl_mvm_vif_link_info *link_info;
898 struct iwl_mvm_vif *mvmvif;
899 struct ieee80211_vif *vif;
900 int link_id;
901 int sig;
902
903 vif = iwl_mvm_rcu_dereference_vif_id(mvm, fw_link_id, false);
904 if (!vif)
905 continue;
906
907 if (vif->type != NL80211_IFTYPE_STATION)
908 continue;
909
910 link_id = vif->bss_conf.link_id;
911 if (link_id >= ARRAY_SIZE(mvmvif->link))
912 continue;
913
914 mvmvif = iwl_mvm_vif_from_mac80211(vif);
915 link_info = mvmvif->link[link_id];
916 if (!link_info)
917 continue;
918
919 link_stats = &per_link[fw_link_id];
920
921 link_info->beacon_stats.num_beacons =
922 le32_to_cpu(link_stats->beacon_counter);
923
924 /* we basically just use the u8 to store 8 bits and then treat
925 * it as a s8 whenever we take it out to a different type.
926 */
927 link_info->beacon_stats.avg_signal =
928 -le32_to_cpu(link_stats->beacon_average_energy);
929
930 if (link_info->phy_ctxt &&
931 link_info->phy_ctxt->channel->band == NL80211_BAND_2GHZ)
932 iwl_mvm_bt_coex_update_link_esr(mvm, vif, link_id);
933
934 /* make sure that beacon statistics don't go backwards with TCM
935 * request to clear statistics
936 */
937 if (mvm->statistics_clear)
938 mvmvif->link[link_id]->beacon_stats.accu_num_beacons +=
939 mvmvif->link[link_id]->beacon_stats.num_beacons;
940
941 sig = -le32_to_cpu(link_stats->beacon_filter_average_energy);
942 iwl_mvm_update_link_sig(vif, sig, link_info, &vif->bss_conf);
943
944 if (WARN_ONCE(mvmvif->id >= MAC_INDEX_AUX,
945 "invalid mvmvif id: %d", mvmvif->id))
946 continue;
947
948 air_time[mvmvif->id] +=
949 le32_to_cpu(per_link[fw_link_id].air_time);
950 rx_bytes[mvmvif->id] +=
951 le32_to_cpu(per_link[fw_link_id].rx_bytes);
952 }
953
954 /* Don't update in case the statistics are not cleared, since
955 * we will end up counting twice the same airtime, once in TCM
956 * request and once in statistics notification.
957 */
958 if (mvm->statistics_clear) {
959 __le32 air_time_le[MAC_INDEX_AUX];
960 __le32 rx_bytes_le[MAC_INDEX_AUX];
961 int vif_id;
962
963 for (vif_id = 0; vif_id < ARRAY_SIZE(air_time_le); vif_id++) {
964 air_time_le[vif_id] = cpu_to_le32(air_time[vif_id]);
965 rx_bytes_le[vif_id] = cpu_to_le32(rx_bytes[vif_id]);
966 }
967
968 iwl_mvm_update_tcm_from_stats(mvm, air_time_le, rx_bytes_le);
969 }
970 }
971
972 #define SEC_LINK_MIN_PERC 10
973 #define SEC_LINK_MIN_TX 3000
974 #define SEC_LINK_MIN_RX 400
975
976 /* Accept a ~20% short window to avoid issues due to jitter */
977 #define IWL_MVM_TPT_MIN_COUNT_WINDOW (IWL_MVM_TPT_COUNT_WINDOW_SEC * HZ * 4 / 5)
978
iwl_mvm_update_esr_mode_tpt(struct iwl_mvm * mvm)979 static void iwl_mvm_update_esr_mode_tpt(struct iwl_mvm *mvm)
980 {
981 struct ieee80211_vif *bss_vif = iwl_mvm_get_bss_vif(mvm);
982 struct iwl_mvm_vif *mvmvif;
983 struct iwl_mvm_sta *mvmsta;
984 unsigned long total_tx = 0, total_rx = 0;
985 unsigned long sec_link_tx = 0, sec_link_rx = 0;
986 u8 sec_link_tx_perc, sec_link_rx_perc;
987 u8 sec_link;
988 bool skip = false;
989
990 lockdep_assert_held(&mvm->mutex);
991
992 if (IS_ERR_OR_NULL(bss_vif))
993 return;
994
995 mvmvif = iwl_mvm_vif_from_mac80211(bss_vif);
996
997 if (!mvmvif->esr_active || !mvmvif->ap_sta)
998 return;
999
1000 mvmsta = iwl_mvm_sta_from_mac80211(mvmvif->ap_sta);
1001 /* We only count for the AP sta in a MLO connection */
1002 if (!mvmsta->mpdu_counters)
1003 return;
1004
1005 /* Get the FW ID of the secondary link */
1006 sec_link = iwl_mvm_get_other_link(bss_vif,
1007 iwl_mvm_get_primary_link(bss_vif));
1008 if (WARN_ON(!mvmvif->link[sec_link]))
1009 return;
1010 sec_link = mvmvif->link[sec_link]->fw_link_id;
1011
1012 /* Sum up RX and TX MPDUs from the different queues/links */
1013 for (int q = 0; q < mvm->trans->info.num_rxqs; q++) {
1014 spin_lock_bh(&mvmsta->mpdu_counters[q].lock);
1015
1016 /* The link IDs that doesn't exist will contain 0 */
1017 for (int link = 0; link < IWL_FW_MAX_LINK_ID; link++) {
1018 total_tx += mvmsta->mpdu_counters[q].per_link[link].tx;
1019 total_rx += mvmsta->mpdu_counters[q].per_link[link].rx;
1020 }
1021
1022 sec_link_tx += mvmsta->mpdu_counters[q].per_link[sec_link].tx;
1023 sec_link_rx += mvmsta->mpdu_counters[q].per_link[sec_link].rx;
1024
1025 /*
1026 * In EMLSR we have statistics every 5 seconds, so we can reset
1027 * the counters upon every statistics notification.
1028 * The FW sends the notification regularly, but it will be
1029 * misaligned at the start. Skipping the measurement if it is
1030 * short will synchronize us.
1031 */
1032 if (jiffies - mvmsta->mpdu_counters[q].window_start <
1033 IWL_MVM_TPT_MIN_COUNT_WINDOW)
1034 skip = true;
1035 mvmsta->mpdu_counters[q].window_start = jiffies;
1036 memset(mvmsta->mpdu_counters[q].per_link, 0,
1037 sizeof(mvmsta->mpdu_counters[q].per_link));
1038
1039 spin_unlock_bh(&mvmsta->mpdu_counters[q].lock);
1040 }
1041
1042 if (skip) {
1043 IWL_DEBUG_INFO(mvm, "MPDU statistics window was short\n");
1044 return;
1045 }
1046
1047 IWL_DEBUG_INFO(mvm, "total Tx MPDUs: %ld. total Rx MPDUs: %ld\n",
1048 total_tx, total_rx);
1049
1050 /* If we don't have enough MPDUs - exit EMLSR */
1051 if (total_tx < IWL_MVM_ENTER_ESR_TPT_THRESH &&
1052 total_rx < IWL_MVM_ENTER_ESR_TPT_THRESH) {
1053 iwl_mvm_block_esr(mvm, bss_vif, IWL_MVM_ESR_BLOCKED_TPT,
1054 iwl_mvm_get_primary_link(bss_vif));
1055 return;
1056 }
1057
1058 IWL_DEBUG_INFO(mvm, "Secondary Link %d: Tx MPDUs: %ld. Rx MPDUs: %ld\n",
1059 sec_link, sec_link_tx, sec_link_rx);
1060
1061 /* Calculate the percentage of the secondary link TX/RX */
1062 sec_link_tx_perc = total_tx ? sec_link_tx * 100 / total_tx : 0;
1063 sec_link_rx_perc = total_rx ? sec_link_rx * 100 / total_rx : 0;
1064
1065 /*
1066 * The TX/RX percentage is checked only if it exceeds the required
1067 * minimum. In addition, RX is checked only if the TX check failed.
1068 */
1069 if ((total_tx > SEC_LINK_MIN_TX &&
1070 sec_link_tx_perc < SEC_LINK_MIN_PERC) ||
1071 (total_rx > SEC_LINK_MIN_RX &&
1072 sec_link_rx_perc < SEC_LINK_MIN_PERC))
1073 iwl_mvm_exit_esr(mvm, bss_vif, IWL_MVM_ESR_EXIT_LINK_USAGE,
1074 iwl_mvm_get_primary_link(bss_vif));
1075 }
1076
iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1077 void iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm *mvm,
1078 struct iwl_rx_cmd_buffer *rxb)
1079 {
1080 u8 average_energy[IWL_STATION_COUNT_MAX];
1081 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1082 struct iwl_system_statistics_notif_oper *stats;
1083 int i;
1084 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
1085 STATISTICS_OPER_NOTIF, 0);
1086
1087 if (notif_ver != 3) {
1088 IWL_FW_CHECK_FAILED(mvm,
1089 "Oper stats notif ver %d is not supported\n",
1090 notif_ver);
1091 return;
1092 }
1093
1094 stats = (void *)&pkt->data;
1095 iwl_mvm_stat_iterator_all_links(mvm, stats->per_link);
1096
1097 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1098 average_energy[i] =
1099 le32_to_cpu(stats->per_sta[i].average_energy);
1100
1101 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1102 average_energy);
1103 iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
1104
1105 iwl_mvm_update_esr_mode_tpt(mvm);
1106 }
1107
iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1108 void iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm *mvm,
1109 struct iwl_rx_cmd_buffer *rxb)
1110 {
1111 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1112 struct iwl_system_statistics_part1_notif_oper *part1_stats;
1113 int i;
1114 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
1115 STATISTICS_OPER_PART1_NOTIF, 0);
1116
1117 if (notif_ver != 4) {
1118 IWL_FW_CHECK_FAILED(mvm,
1119 "Part1 stats notif ver %d is not supported\n",
1120 notif_ver);
1121 return;
1122 }
1123
1124 part1_stats = (void *)&pkt->data;
1125 mvm->radio_stats.rx_time = 0;
1126 mvm->radio_stats.tx_time = 0;
1127 for (i = 0; i < ARRAY_SIZE(part1_stats->per_link); i++) {
1128 mvm->radio_stats.rx_time +=
1129 le64_to_cpu(part1_stats->per_link[i].rx_time);
1130 mvm->radio_stats.tx_time +=
1131 le64_to_cpu(part1_stats->per_link[i].tx_time);
1132 }
1133 }
1134
1135 static void
iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)1136 iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm *mvm,
1137 struct iwl_rx_packet *pkt)
1138 {
1139 u8 average_energy[IWL_STATION_COUNT_MAX];
1140 __le32 air_time[MAC_INDEX_AUX];
1141 __le32 rx_bytes[MAC_INDEX_AUX];
1142 __le32 flags = 0;
1143 int i;
1144 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1145 STATISTICS_NOTIFICATION, 0);
1146
1147 if (WARN_ONCE(notif_ver > 15,
1148 "invalid statistics version id: %d\n", notif_ver))
1149 return;
1150
1151 if (notif_ver == 14) {
1152 struct iwl_statistics_operational_ntfy_ver_14 *stats =
1153 (void *)pkt->data;
1154
1155 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
1156 return;
1157
1158 iwl_mvm_stats_ver_14(mvm, stats);
1159
1160 flags = stats->flags;
1161 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
1162 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
1163 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
1164 mvm->radio_stats.on_time_scan =
1165 le64_to_cpu(stats->on_time_scan);
1166
1167 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1168 average_energy[i] = le32_to_cpu(stats->average_energy[i]);
1169
1170 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
1171 air_time[i] = stats->air_time[i];
1172 rx_bytes[i] = stats->rx_bytes[i];
1173 }
1174 }
1175
1176 if (notif_ver == 15) {
1177 struct iwl_statistics_operational_ntfy *stats =
1178 (void *)pkt->data;
1179
1180 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
1181 return;
1182
1183 iwl_mvm_stats_ver_15(mvm, stats);
1184
1185 flags = stats->flags;
1186 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
1187 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
1188 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
1189 mvm->radio_stats.on_time_scan =
1190 le64_to_cpu(stats->on_time_scan);
1191
1192 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1193 average_energy[i] =
1194 le32_to_cpu(stats->per_sta[i].average_energy);
1195
1196 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
1197 air_time[i] = stats->per_mac[i].air_time;
1198 rx_bytes[i] = stats->per_mac[i].rx_bytes;
1199 }
1200 }
1201
1202 iwl_mvm_rx_stats_check_trigger(mvm, pkt);
1203
1204 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1205 average_energy);
1206 /*
1207 * Don't update in case the statistics are not cleared, since
1208 * we will end up counting twice the same airtime, once in TCM
1209 * request and once in statistics notification.
1210 */
1211 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1212 iwl_mvm_update_tcm_from_stats(mvm, air_time, rx_bytes);
1213 }
1214
iwl_mvm_handle_rx_statistics(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)1215 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm,
1216 struct iwl_rx_packet *pkt)
1217 {
1218 struct iwl_mvm_stat_data data = {
1219 .mvm = mvm,
1220 };
1221 __le32 *bytes, *air_time, flags;
1222 int expected_size;
1223 u8 *energy;
1224 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1225 WIDE_ID(SYSTEM_GROUP,
1226 SYSTEM_STATISTICS_CMD),
1227 IWL_FW_CMD_VER_UNKNOWN);
1228
1229 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)
1230 return;
1231
1232 /* From ver 14 and up we use TLV statistics format */
1233 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1234 STATISTICS_NOTIFICATION, 0) >= 14)
1235 return iwl_mvm_handle_rx_statistics_tlv(mvm, pkt);
1236
1237 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1238 if (iwl_mvm_has_new_rx_api(mvm))
1239 expected_size = sizeof(struct iwl_notif_statistics_v11);
1240 else
1241 expected_size = sizeof(struct iwl_notif_statistics_v10);
1242 } else {
1243 expected_size = sizeof(struct iwl_notif_statistics);
1244 }
1245
1246 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size,
1247 "received invalid statistics size (%d)!\n",
1248 iwl_rx_packet_payload_len(pkt)))
1249 return;
1250
1251 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1252 struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data;
1253
1254 data.mac_id = stats->rx.general.mac_id;
1255 data.beacon_filter_average_energy =
1256 stats->general.common.beacon_filter_average_energy;
1257
1258 mvm->rx_stats_v3 = stats->rx;
1259
1260 mvm->radio_stats.rx_time =
1261 le64_to_cpu(stats->general.common.rx_time);
1262 mvm->radio_stats.tx_time =
1263 le64_to_cpu(stats->general.common.tx_time);
1264 mvm->radio_stats.on_time_rf =
1265 le64_to_cpu(stats->general.common.on_time_rf);
1266 mvm->radio_stats.on_time_scan =
1267 le64_to_cpu(stats->general.common.on_time_scan);
1268
1269 data.beacon_counter = stats->general.beacon_counter;
1270 data.beacon_average_energy =
1271 stats->general.beacon_average_energy;
1272 flags = stats->flag;
1273 } else {
1274 struct iwl_notif_statistics *stats = (void *)&pkt->data;
1275
1276 data.mac_id = stats->rx.general.mac_id;
1277 data.beacon_filter_average_energy =
1278 stats->general.common.beacon_filter_average_energy;
1279
1280 mvm->rx_stats = stats->rx;
1281
1282 mvm->radio_stats.rx_time =
1283 le64_to_cpu(stats->general.common.rx_time);
1284 mvm->radio_stats.tx_time =
1285 le64_to_cpu(stats->general.common.tx_time);
1286 mvm->radio_stats.on_time_rf =
1287 le64_to_cpu(stats->general.common.on_time_rf);
1288 mvm->radio_stats.on_time_scan =
1289 le64_to_cpu(stats->general.common.on_time_scan);
1290
1291 data.beacon_counter = stats->general.beacon_counter;
1292 data.beacon_average_energy =
1293 stats->general.beacon_average_energy;
1294 flags = stats->flag;
1295 }
1296 data.flags = flags;
1297
1298 iwl_mvm_rx_stats_check_trigger(mvm, pkt);
1299
1300 ieee80211_iterate_active_interfaces(mvm->hw,
1301 IEEE80211_IFACE_ITER_NORMAL,
1302 iwl_mvm_stat_iterator,
1303 &data);
1304
1305 if (!iwl_mvm_has_new_rx_api(mvm))
1306 return;
1307
1308 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1309 struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data;
1310
1311 energy = (void *)&v11->load_stats.avg_energy;
1312 bytes = (void *)&v11->load_stats.byte_count;
1313 air_time = (void *)&v11->load_stats.air_time;
1314 } else {
1315 struct iwl_notif_statistics *stats = (void *)&pkt->data;
1316
1317 energy = (void *)&stats->load_stats.avg_energy;
1318 bytes = (void *)&stats->load_stats.byte_count;
1319 air_time = (void *)&stats->load_stats.air_time;
1320 }
1321 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1322 energy);
1323
1324 /*
1325 * Don't update in case the statistics are not cleared, since
1326 * we will end up counting twice the same airtime, once in TCM
1327 * request and once in statistics notification.
1328 */
1329 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1330 iwl_mvm_update_tcm_from_stats(mvm, air_time, bytes);
1331
1332 }
1333
iwl_mvm_rx_statistics(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1334 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1335 {
1336 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb));
1337 }
1338
iwl_mvm_window_status_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1339 void iwl_mvm_window_status_notif(struct iwl_mvm *mvm,
1340 struct iwl_rx_cmd_buffer *rxb)
1341 {
1342 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1343 struct iwl_ba_window_status_notif *notif = (void *)pkt->data;
1344 int i;
1345
1346 BUILD_BUG_ON(ARRAY_SIZE(notif->ra_tid) != BA_WINDOW_STREAMS_MAX);
1347 BUILD_BUG_ON(ARRAY_SIZE(notif->mpdu_rx_count) != BA_WINDOW_STREAMS_MAX);
1348 BUILD_BUG_ON(ARRAY_SIZE(notif->bitmap) != BA_WINDOW_STREAMS_MAX);
1349 BUILD_BUG_ON(ARRAY_SIZE(notif->start_seq_num) != BA_WINDOW_STREAMS_MAX);
1350
1351 rcu_read_lock();
1352 for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) {
1353 struct ieee80211_sta *sta;
1354 u8 sta_id, tid;
1355 u64 bitmap;
1356 u32 ssn;
1357 u16 ratid;
1358 u16 received_mpdu;
1359
1360 ratid = le16_to_cpu(notif->ra_tid[i]);
1361 /* check that this TID is valid */
1362 if (!(ratid & BA_WINDOW_STATUS_VALID_MSK))
1363 continue;
1364
1365 received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]);
1366 if (received_mpdu == 0)
1367 continue;
1368
1369 tid = ratid & BA_WINDOW_STATUS_TID_MSK;
1370 /* get the station */
1371 sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK)
1372 >> BA_WINDOW_STATUS_STA_ID_POS;
1373 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1374 if (IS_ERR_OR_NULL(sta))
1375 continue;
1376 bitmap = le64_to_cpu(notif->bitmap[i]);
1377 ssn = le32_to_cpu(notif->start_seq_num[i]);
1378
1379 /* update mac80211 with the bitmap for the reordering buffer */
1380 ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap,
1381 received_mpdu);
1382 }
1383 rcu_read_unlock();
1384 }
1385