1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2024 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 (!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_stats_ntfy_per_mac *per_mac;
557 };
558
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)559 static void iwl_mvm_update_link_sig(struct ieee80211_vif *vif, int sig,
560 struct iwl_mvm_vif_link_info *link_info,
561 struct ieee80211_bss_conf *bss_conf)
562 {
563 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
564 struct iwl_mvm *mvm = mvmvif->mvm;
565 int thold = bss_conf->cqm_rssi_thold;
566 int hyst = bss_conf->cqm_rssi_hyst;
567 int last_event;
568 s8 exit_esr_thresh;
569
570 if (sig == 0) {
571 IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n");
572 return;
573 }
574
575 link_info->bf_data.ave_beacon_signal = sig;
576
577 /* BT Coex */
578 if (link_info->bf_data.bt_coex_min_thold !=
579 link_info->bf_data.bt_coex_max_thold) {
580 last_event = link_info->bf_data.last_bt_coex_event;
581 if (sig > link_info->bf_data.bt_coex_max_thold &&
582 (last_event <= link_info->bf_data.bt_coex_min_thold ||
583 last_event == 0)) {
584 link_info->bf_data.last_bt_coex_event = sig;
585 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
586 sig);
587 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
588 } else if (sig < link_info->bf_data.bt_coex_min_thold &&
589 (last_event >= link_info->bf_data.bt_coex_max_thold ||
590 last_event == 0)) {
591 link_info->bf_data.last_bt_coex_event = sig;
592 IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
593 sig);
594 iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
595 }
596 }
597
598 if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
599 return;
600
601 /* CQM Notification */
602 last_event = link_info->bf_data.last_cqm_event;
603 if (thold && sig < thold && (last_event == 0 ||
604 sig < last_event - hyst)) {
605 link_info->bf_data.last_cqm_event = sig;
606 IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
607 sig);
608 ieee80211_cqm_rssi_notify(
609 vif,
610 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
611 sig,
612 GFP_KERNEL);
613 } else if (sig > thold &&
614 (last_event == 0 || sig > last_event + hyst)) {
615 link_info->bf_data.last_cqm_event = sig;
616 IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
617 sig);
618 ieee80211_cqm_rssi_notify(
619 vif,
620 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
621 sig,
622 GFP_KERNEL);
623 }
624
625 /* ESR recalculation */
626 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif))
627 return;
628
629 /* We're not in EMLSR and our signal is bad, try to switch link maybe */
630 if (sig < IWL_MVM_LOW_RSSI_MLO_SCAN_THRESH && !mvmvif->esr_active) {
631 iwl_mvm_int_mlo_scan(mvm, vif);
632 return;
633 }
634
635 /* We are in EMLSR, check if we need to exit */
636 exit_esr_thresh =
637 iwl_mvm_get_esr_rssi_thresh(mvm,
638 &bss_conf->chanreq.oper,
639 true);
640
641 if (sig < exit_esr_thresh)
642 iwl_mvm_exit_esr(mvm, vif, IWL_MVM_ESR_EXIT_LOW_RSSI,
643 iwl_mvm_get_other_link(vif,
644 bss_conf->link_id));
645 }
646
iwl_mvm_stat_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)647 static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
648 struct ieee80211_vif *vif)
649 {
650 struct iwl_mvm_stat_data *data = _data;
651 int sig = -data->beacon_filter_average_energy;
652 u16 id = le32_to_cpu(data->mac_id);
653 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
654 u16 vif_id = mvmvif->id;
655
656 /* This doesn't need the MAC ID check since it's not taking the
657 * data copied into the "data" struct, but rather the data from
658 * the notification directly.
659 */
660 mvmvif->deflink.beacon_stats.num_beacons =
661 le32_to_cpu(data->beacon_counter[vif_id]);
662 mvmvif->deflink.beacon_stats.avg_signal =
663 -data->beacon_average_energy[vif_id];
664
665 if (mvmvif->id != id)
666 return;
667
668 if (vif->type != NL80211_IFTYPE_STATION)
669 return;
670
671 /* make sure that beacon statistics don't go backwards with TCM
672 * request to clear statistics
673 */
674 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
675 mvmvif->deflink.beacon_stats.accu_num_beacons +=
676 mvmvif->deflink.beacon_stats.num_beacons;
677
678 /* This is used in pre-MLO API so use deflink */
679 iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf);
680 }
681
iwl_mvm_stat_iterator_all_macs(void * _data,u8 * mac,struct ieee80211_vif * vif)682 static void iwl_mvm_stat_iterator_all_macs(void *_data, u8 *mac,
683 struct ieee80211_vif *vif)
684 {
685 struct iwl_mvm_stat_data_all_macs *data = _data;
686 struct iwl_stats_ntfy_per_mac *mac_stats;
687 int sig;
688 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
689 u16 vif_id = mvmvif->id;
690
691 if (WARN_ONCE(vif_id >= MAC_INDEX_AUX, "invalid vif id: %d", vif_id))
692 return;
693
694 if (vif->type != NL80211_IFTYPE_STATION)
695 return;
696
697 mac_stats = &data->per_mac[vif_id];
698
699 mvmvif->deflink.beacon_stats.num_beacons =
700 le32_to_cpu(mac_stats->beacon_counter);
701 mvmvif->deflink.beacon_stats.avg_signal =
702 -le32_to_cpu(mac_stats->beacon_average_energy);
703
704 /* make sure that beacon statistics don't go backwards with TCM
705 * request to clear statistics
706 */
707 if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
708 mvmvif->deflink.beacon_stats.accu_num_beacons +=
709 mvmvif->deflink.beacon_stats.num_beacons;
710
711 sig = -le32_to_cpu(mac_stats->beacon_filter_average_energy);
712
713 /* This is used in pre-MLO API so use deflink */
714 iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf);
715 }
716
717 static inline void
iwl_mvm_rx_stats_check_trigger(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)718 iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt)
719 {
720 struct iwl_fw_dbg_trigger_tlv *trig;
721 struct iwl_fw_dbg_trigger_stats *trig_stats;
722 u32 trig_offset, trig_thold;
723
724 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS);
725 if (!trig)
726 return;
727
728 trig_stats = (void *)trig->data;
729
730 trig_offset = le32_to_cpu(trig_stats->stop_offset);
731 trig_thold = le32_to_cpu(trig_stats->stop_threshold);
732
733 if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt)))
734 return;
735
736 if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold)
737 return;
738
739 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL);
740 }
741
iwl_mvm_stats_energy_iter(void * _data,struct ieee80211_sta * sta)742 static void iwl_mvm_stats_energy_iter(void *_data,
743 struct ieee80211_sta *sta)
744 {
745 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
746 u8 *energy = _data;
747 u32 sta_id = mvmsta->deflink.sta_id;
748
749 if (WARN_ONCE(sta_id >= IWL_STATION_COUNT_MAX, "sta_id %d >= %d",
750 sta_id, IWL_STATION_COUNT_MAX))
751 return;
752
753 if (energy[sta_id])
754 mvmsta->deflink.avg_energy = energy[sta_id];
755
756 }
757
758 static void
iwl_mvm_update_tcm_from_stats(struct iwl_mvm * mvm,__le32 * air_time_le,__le32 * rx_bytes_le)759 iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le,
760 __le32 *rx_bytes_le)
761 {
762 int i;
763
764 spin_lock(&mvm->tcm.lock);
765 for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {
766 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i];
767 u32 rx_bytes = le32_to_cpu(rx_bytes_le[i]);
768 u32 airtime = le32_to_cpu(air_time_le[i]);
769
770 mdata->rx.airtime += airtime;
771 mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes;
772 if (airtime) {
773 /* re-init every time to store rate from FW */
774 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
775 ewma_rate_add(&mdata->uapsd_nonagg_detect.rate,
776 rx_bytes * 8 / airtime);
777 }
778 }
779 spin_unlock(&mvm->tcm.lock);
780 }
781
iwl_mvm_handle_per_phy_stats(struct iwl_mvm * mvm,struct iwl_stats_ntfy_per_phy * per_phy)782 static void iwl_mvm_handle_per_phy_stats(struct iwl_mvm *mvm,
783 struct iwl_stats_ntfy_per_phy *per_phy)
784 {
785 int i;
786
787 for (i = 0; i < NUM_PHY_CTX; i++) {
788 if (!mvm->phy_ctxts[i].ref)
789 continue;
790 mvm->phy_ctxts[i].channel_load_by_us =
791 le32_to_cpu(per_phy[i].channel_load_by_us);
792 }
793 }
794
795 static void
iwl_mvm_stats_ver_15(struct iwl_mvm * mvm,struct iwl_statistics_operational_ntfy * stats)796 iwl_mvm_stats_ver_15(struct iwl_mvm *mvm,
797 struct iwl_statistics_operational_ntfy *stats)
798 {
799 struct iwl_mvm_stat_data_all_macs data = {
800 .mvm = mvm,
801 .flags = stats->flags,
802 .per_mac = stats->per_mac,
803 };
804
805 ieee80211_iterate_active_interfaces(mvm->hw,
806 IEEE80211_IFACE_ITER_NORMAL,
807 iwl_mvm_stat_iterator_all_macs,
808 &data);
809 iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
810 }
811
812 static void
iwl_mvm_stats_ver_14(struct iwl_mvm * mvm,struct iwl_statistics_operational_ntfy_ver_14 * stats)813 iwl_mvm_stats_ver_14(struct iwl_mvm *mvm,
814 struct iwl_statistics_operational_ntfy_ver_14 *stats)
815 {
816 struct iwl_mvm_stat_data data = {
817 .mvm = mvm,
818 };
819
820 u8 beacon_average_energy[MAC_INDEX_AUX];
821 __le32 flags;
822 int i;
823
824 flags = stats->flags;
825
826 data.mac_id = stats->mac_id;
827 data.beacon_filter_average_energy =
828 le32_to_cpu(stats->beacon_filter_average_energy);
829 data.flags = flags;
830 data.beacon_counter = stats->beacon_counter;
831
832 for (i = 0; i < ARRAY_SIZE(beacon_average_energy); i++)
833 beacon_average_energy[i] =
834 le32_to_cpu(stats->beacon_average_energy[i]);
835
836 data.beacon_average_energy = beacon_average_energy;
837
838 ieee80211_iterate_active_interfaces(mvm->hw,
839 IEEE80211_IFACE_ITER_NORMAL,
840 iwl_mvm_stat_iterator,
841 &data);
842 }
843
iwl_mvm_verify_stats_len(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt,u32 expected_size)844 static bool iwl_mvm_verify_stats_len(struct iwl_mvm *mvm,
845 struct iwl_rx_packet *pkt,
846 u32 expected_size)
847 {
848 struct iwl_statistics_ntfy_hdr *hdr;
849
850 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) < expected_size,
851 "received invalid statistics size (%d)!, expected_size: %d\n",
852 iwl_rx_packet_payload_len(pkt), expected_size))
853 return false;
854
855 hdr = (void *)&pkt->data;
856
857 if (WARN_ONCE((hdr->type & IWL_STATISTICS_TYPE_MSK) != FW_STATISTICS_OPERATIONAL ||
858 hdr->version !=
859 iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, STATISTICS_NOTIFICATION, 0),
860 "received unsupported hdr type %d, version %d\n",
861 hdr->type, hdr->version))
862 return false;
863
864 if (WARN_ONCE(le16_to_cpu(hdr->size) != expected_size,
865 "received invalid statistics size in header (%d)!, expected_size: %d\n",
866 le16_to_cpu(hdr->size), expected_size))
867 return false;
868
869 return true;
870 }
871
872 static void
iwl_mvm_stat_iterator_all_links(struct iwl_mvm * mvm,struct iwl_stats_ntfy_per_link * per_link)873 iwl_mvm_stat_iterator_all_links(struct iwl_mvm *mvm,
874 struct iwl_stats_ntfy_per_link *per_link)
875 {
876 u32 air_time[MAC_INDEX_AUX] = {};
877 u32 rx_bytes[MAC_INDEX_AUX] = {};
878 int fw_link_id;
879
880 for (fw_link_id = 0; fw_link_id < ARRAY_SIZE(mvm->link_id_to_link_conf);
881 fw_link_id++) {
882 struct iwl_stats_ntfy_per_link *link_stats;
883 struct ieee80211_bss_conf *bss_conf;
884 struct iwl_mvm_vif *mvmvif;
885 struct iwl_mvm_vif_link_info *link_info;
886 int link_id;
887 int sig;
888
889 bss_conf = iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, fw_link_id,
890 false);
891 if (!bss_conf)
892 continue;
893
894 if (bss_conf->vif->type != NL80211_IFTYPE_STATION)
895 continue;
896
897 link_id = bss_conf->link_id;
898 if (link_id >= ARRAY_SIZE(mvmvif->link))
899 continue;
900
901 mvmvif = iwl_mvm_vif_from_mac80211(bss_conf->vif);
902 link_info = mvmvif->link[link_id];
903 if (!link_info)
904 continue;
905
906 link_stats = &per_link[fw_link_id];
907
908 link_info->beacon_stats.num_beacons =
909 le32_to_cpu(link_stats->beacon_counter);
910
911 /* we basically just use the u8 to store 8 bits and then treat
912 * it as a s8 whenever we take it out to a different type.
913 */
914 link_info->beacon_stats.avg_signal =
915 -le32_to_cpu(link_stats->beacon_average_energy);
916
917 if (link_info->phy_ctxt &&
918 link_info->phy_ctxt->channel->band == NL80211_BAND_2GHZ)
919 iwl_mvm_bt_coex_update_link_esr(mvm, bss_conf->vif,
920 link_id);
921
922 /* make sure that beacon statistics don't go backwards with TCM
923 * request to clear statistics
924 */
925 if (mvm->statistics_clear)
926 mvmvif->link[link_id]->beacon_stats.accu_num_beacons +=
927 mvmvif->link[link_id]->beacon_stats.num_beacons;
928
929 sig = -le32_to_cpu(link_stats->beacon_filter_average_energy);
930 iwl_mvm_update_link_sig(bss_conf->vif, sig, link_info,
931 bss_conf);
932
933 if (WARN_ONCE(mvmvif->id >= MAC_INDEX_AUX,
934 "invalid mvmvif id: %d", mvmvif->id))
935 continue;
936
937 air_time[mvmvif->id] +=
938 le32_to_cpu(per_link[fw_link_id].air_time);
939 rx_bytes[mvmvif->id] +=
940 le32_to_cpu(per_link[fw_link_id].rx_bytes);
941 }
942
943 /* Don't update in case the statistics are not cleared, since
944 * we will end up counting twice the same airtime, once in TCM
945 * request and once in statistics notification.
946 */
947 if (mvm->statistics_clear) {
948 __le32 air_time_le[MAC_INDEX_AUX];
949 __le32 rx_bytes_le[MAC_INDEX_AUX];
950 int vif_id;
951
952 for (vif_id = 0; vif_id < ARRAY_SIZE(air_time_le); vif_id++) {
953 air_time_le[vif_id] = cpu_to_le32(air_time[vif_id]);
954 rx_bytes_le[vif_id] = cpu_to_le32(rx_bytes[vif_id]);
955 }
956
957 iwl_mvm_update_tcm_from_stats(mvm, air_time_le, rx_bytes_le);
958 }
959 }
960
961 #define SEC_LINK_MIN_PERC 10
962 #define SEC_LINK_MIN_TX 3000
963 #define SEC_LINK_MIN_RX 400
964
iwl_mvm_update_esr_mode_tpt(struct iwl_mvm * mvm)965 static void iwl_mvm_update_esr_mode_tpt(struct iwl_mvm *mvm)
966 {
967 struct ieee80211_vif *bss_vif = iwl_mvm_get_bss_vif(mvm);
968 struct iwl_mvm_vif *mvmvif;
969 struct iwl_mvm_sta *mvmsta;
970 unsigned long total_tx = 0, total_rx = 0;
971 unsigned long sec_link_tx = 0, sec_link_rx = 0;
972 u8 sec_link_tx_perc, sec_link_rx_perc;
973 u8 sec_link;
974
975 lockdep_assert_held(&mvm->mutex);
976
977 if (IS_ERR_OR_NULL(bss_vif))
978 return;
979
980 mvmvif = iwl_mvm_vif_from_mac80211(bss_vif);
981
982 if (!mvmvif->esr_active || !mvmvif->ap_sta)
983 return;
984
985 mvmsta = iwl_mvm_sta_from_mac80211(mvmvif->ap_sta);
986 /* We only count for the AP sta in a MLO connection */
987 if (!mvmsta->mpdu_counters)
988 return;
989
990 /* Get the FW ID of the secondary link */
991 sec_link = iwl_mvm_get_other_link(bss_vif,
992 iwl_mvm_get_primary_link(bss_vif));
993 if (WARN_ON(!mvmvif->link[sec_link]))
994 return;
995 sec_link = mvmvif->link[sec_link]->fw_link_id;
996
997 /* Sum up RX and TX MPDUs from the different queues/links */
998 for (int q = 0; q < mvm->trans->num_rx_queues; q++) {
999 spin_lock_bh(&mvmsta->mpdu_counters[q].lock);
1000
1001 /* The link IDs that doesn't exist will contain 0 */
1002 for (int link = 0; link < IWL_FW_MAX_LINK_ID; link++) {
1003 total_tx += mvmsta->mpdu_counters[q].per_link[link].tx;
1004 total_rx += mvmsta->mpdu_counters[q].per_link[link].rx;
1005 }
1006
1007 sec_link_tx += mvmsta->mpdu_counters[q].per_link[sec_link].tx;
1008 sec_link_rx += mvmsta->mpdu_counters[q].per_link[sec_link].rx;
1009
1010 /*
1011 * In EMLSR we have statistics every 5 seconds, so we can reset
1012 * the counters upon every statistics notification.
1013 */
1014 memset(mvmsta->mpdu_counters[q].per_link, 0,
1015 sizeof(mvmsta->mpdu_counters[q].per_link));
1016
1017 spin_unlock_bh(&mvmsta->mpdu_counters[q].lock);
1018 }
1019
1020 IWL_DEBUG_INFO(mvm, "total Tx MPDUs: %ld. total Rx MPDUs: %ld\n",
1021 total_tx, total_rx);
1022
1023 /* If we don't have enough MPDUs - exit EMLSR */
1024 if (total_tx < IWL_MVM_ENTER_ESR_TPT_THRESH &&
1025 total_rx < IWL_MVM_ENTER_ESR_TPT_THRESH) {
1026 iwl_mvm_block_esr(mvm, bss_vif, IWL_MVM_ESR_BLOCKED_TPT,
1027 iwl_mvm_get_primary_link(bss_vif));
1028 return;
1029 }
1030
1031 IWL_DEBUG_INFO(mvm, "Secondary Link %d: Tx MPDUs: %ld. Rx MPDUs: %ld\n",
1032 sec_link, sec_link_tx, sec_link_rx);
1033
1034 /* Calculate the percentage of the secondary link TX/RX */
1035 sec_link_tx_perc = total_tx ? sec_link_tx * 100 / total_tx : 0;
1036 sec_link_rx_perc = total_rx ? sec_link_rx * 100 / total_rx : 0;
1037
1038 /*
1039 * The TX/RX percentage is checked only if it exceeds the required
1040 * minimum. In addition, RX is checked only if the TX check failed.
1041 */
1042 if ((total_tx > SEC_LINK_MIN_TX &&
1043 sec_link_tx_perc < SEC_LINK_MIN_PERC) ||
1044 (total_rx > SEC_LINK_MIN_RX &&
1045 sec_link_rx_perc < SEC_LINK_MIN_PERC))
1046 iwl_mvm_exit_esr(mvm, bss_vif, IWL_MVM_ESR_EXIT_LINK_USAGE,
1047 iwl_mvm_get_primary_link(bss_vif));
1048 }
1049
iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1050 void iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm *mvm,
1051 struct iwl_rx_cmd_buffer *rxb)
1052 {
1053 u8 average_energy[IWL_STATION_COUNT_MAX];
1054 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1055 struct iwl_system_statistics_notif_oper *stats;
1056 int i;
1057 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
1058 STATISTICS_OPER_NOTIF, 0);
1059
1060 if (notif_ver != 3) {
1061 IWL_FW_CHECK_FAILED(mvm,
1062 "Oper stats notif ver %d is not supported\n",
1063 notif_ver);
1064 return;
1065 }
1066
1067 stats = (void *)&pkt->data;
1068 iwl_mvm_stat_iterator_all_links(mvm, stats->per_link);
1069
1070 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1071 average_energy[i] =
1072 le32_to_cpu(stats->per_sta[i].average_energy);
1073
1074 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1075 average_energy);
1076 iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
1077
1078 iwl_mvm_update_esr_mode_tpt(mvm);
1079 }
1080
iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1081 void iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm *mvm,
1082 struct iwl_rx_cmd_buffer *rxb)
1083 {
1084 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1085 struct iwl_system_statistics_part1_notif_oper *part1_stats;
1086 int i;
1087 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
1088 STATISTICS_OPER_PART1_NOTIF, 0);
1089
1090 if (notif_ver != 4) {
1091 IWL_FW_CHECK_FAILED(mvm,
1092 "Part1 stats notif ver %d is not supported\n",
1093 notif_ver);
1094 return;
1095 }
1096
1097 part1_stats = (void *)&pkt->data;
1098 mvm->radio_stats.rx_time = 0;
1099 mvm->radio_stats.tx_time = 0;
1100 for (i = 0; i < ARRAY_SIZE(part1_stats->per_link); i++) {
1101 mvm->radio_stats.rx_time +=
1102 le64_to_cpu(part1_stats->per_link[i].rx_time);
1103 mvm->radio_stats.tx_time +=
1104 le64_to_cpu(part1_stats->per_link[i].tx_time);
1105 }
1106 }
1107
1108 static void
iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)1109 iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm *mvm,
1110 struct iwl_rx_packet *pkt)
1111 {
1112 u8 average_energy[IWL_STATION_COUNT_MAX];
1113 __le32 air_time[MAC_INDEX_AUX];
1114 __le32 rx_bytes[MAC_INDEX_AUX];
1115 __le32 flags = 0;
1116 int i;
1117 u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1118 STATISTICS_NOTIFICATION, 0);
1119
1120 if (WARN_ONCE(notif_ver > 15,
1121 "invalid statistics version id: %d\n", notif_ver))
1122 return;
1123
1124 if (notif_ver == 14) {
1125 struct iwl_statistics_operational_ntfy_ver_14 *stats =
1126 (void *)pkt->data;
1127
1128 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
1129 return;
1130
1131 iwl_mvm_stats_ver_14(mvm, stats);
1132
1133 flags = stats->flags;
1134 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
1135 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
1136 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
1137 mvm->radio_stats.on_time_scan =
1138 le64_to_cpu(stats->on_time_scan);
1139
1140 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1141 average_energy[i] = le32_to_cpu(stats->average_energy[i]);
1142
1143 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
1144 air_time[i] = stats->air_time[i];
1145 rx_bytes[i] = stats->rx_bytes[i];
1146 }
1147 }
1148
1149 if (notif_ver == 15) {
1150 struct iwl_statistics_operational_ntfy *stats =
1151 (void *)pkt->data;
1152
1153 if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
1154 return;
1155
1156 iwl_mvm_stats_ver_15(mvm, stats);
1157
1158 flags = stats->flags;
1159 mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
1160 mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
1161 mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
1162 mvm->radio_stats.on_time_scan =
1163 le64_to_cpu(stats->on_time_scan);
1164
1165 for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1166 average_energy[i] =
1167 le32_to_cpu(stats->per_sta[i].average_energy);
1168
1169 for (i = 0; i < ARRAY_SIZE(air_time); i++) {
1170 air_time[i] = stats->per_mac[i].air_time;
1171 rx_bytes[i] = stats->per_mac[i].rx_bytes;
1172 }
1173 }
1174
1175 iwl_mvm_rx_stats_check_trigger(mvm, pkt);
1176
1177 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1178 average_energy);
1179 /*
1180 * Don't update in case the statistics are not cleared, since
1181 * we will end up counting twice the same airtime, once in TCM
1182 * request and once in statistics notification.
1183 */
1184 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1185 iwl_mvm_update_tcm_from_stats(mvm, air_time, rx_bytes);
1186 }
1187
iwl_mvm_handle_rx_statistics(struct iwl_mvm * mvm,struct iwl_rx_packet * pkt)1188 void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm,
1189 struct iwl_rx_packet *pkt)
1190 {
1191 struct iwl_mvm_stat_data data = {
1192 .mvm = mvm,
1193 };
1194 __le32 *bytes, *air_time, flags;
1195 int expected_size;
1196 u8 *energy;
1197 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1198 WIDE_ID(SYSTEM_GROUP,
1199 SYSTEM_STATISTICS_CMD),
1200 IWL_FW_CMD_VER_UNKNOWN);
1201
1202 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)
1203 return;
1204
1205 /* From ver 14 and up we use TLV statistics format */
1206 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1207 STATISTICS_NOTIFICATION, 0) >= 14)
1208 return iwl_mvm_handle_rx_statistics_tlv(mvm, pkt);
1209
1210 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1211 if (iwl_mvm_has_new_rx_api(mvm))
1212 expected_size = sizeof(struct iwl_notif_statistics_v11);
1213 else
1214 expected_size = sizeof(struct iwl_notif_statistics_v10);
1215 } else {
1216 expected_size = sizeof(struct iwl_notif_statistics);
1217 }
1218
1219 if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size,
1220 "received invalid statistics size (%d)!\n",
1221 iwl_rx_packet_payload_len(pkt)))
1222 return;
1223
1224 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1225 struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data;
1226
1227 data.mac_id = stats->rx.general.mac_id;
1228 data.beacon_filter_average_energy =
1229 stats->general.common.beacon_filter_average_energy;
1230
1231 mvm->rx_stats_v3 = stats->rx;
1232
1233 mvm->radio_stats.rx_time =
1234 le64_to_cpu(stats->general.common.rx_time);
1235 mvm->radio_stats.tx_time =
1236 le64_to_cpu(stats->general.common.tx_time);
1237 mvm->radio_stats.on_time_rf =
1238 le64_to_cpu(stats->general.common.on_time_rf);
1239 mvm->radio_stats.on_time_scan =
1240 le64_to_cpu(stats->general.common.on_time_scan);
1241
1242 data.beacon_counter = stats->general.beacon_counter;
1243 data.beacon_average_energy =
1244 stats->general.beacon_average_energy;
1245 flags = stats->flag;
1246 } else {
1247 struct iwl_notif_statistics *stats = (void *)&pkt->data;
1248
1249 data.mac_id = stats->rx.general.mac_id;
1250 data.beacon_filter_average_energy =
1251 stats->general.common.beacon_filter_average_energy;
1252
1253 mvm->rx_stats = stats->rx;
1254
1255 mvm->radio_stats.rx_time =
1256 le64_to_cpu(stats->general.common.rx_time);
1257 mvm->radio_stats.tx_time =
1258 le64_to_cpu(stats->general.common.tx_time);
1259 mvm->radio_stats.on_time_rf =
1260 le64_to_cpu(stats->general.common.on_time_rf);
1261 mvm->radio_stats.on_time_scan =
1262 le64_to_cpu(stats->general.common.on_time_scan);
1263
1264 data.beacon_counter = stats->general.beacon_counter;
1265 data.beacon_average_energy =
1266 stats->general.beacon_average_energy;
1267 flags = stats->flag;
1268 }
1269 data.flags = flags;
1270
1271 iwl_mvm_rx_stats_check_trigger(mvm, pkt);
1272
1273 ieee80211_iterate_active_interfaces(mvm->hw,
1274 IEEE80211_IFACE_ITER_NORMAL,
1275 iwl_mvm_stat_iterator,
1276 &data);
1277
1278 if (!iwl_mvm_has_new_rx_api(mvm))
1279 return;
1280
1281 if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1282 struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data;
1283
1284 energy = (void *)&v11->load_stats.avg_energy;
1285 bytes = (void *)&v11->load_stats.byte_count;
1286 air_time = (void *)&v11->load_stats.air_time;
1287 } else {
1288 struct iwl_notif_statistics *stats = (void *)&pkt->data;
1289
1290 energy = (void *)&stats->load_stats.avg_energy;
1291 bytes = (void *)&stats->load_stats.byte_count;
1292 air_time = (void *)&stats->load_stats.air_time;
1293 }
1294 ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1295 energy);
1296
1297 /*
1298 * Don't update in case the statistics are not cleared, since
1299 * we will end up counting twice the same airtime, once in TCM
1300 * request and once in statistics notification.
1301 */
1302 if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1303 iwl_mvm_update_tcm_from_stats(mvm, air_time, bytes);
1304
1305 }
1306
iwl_mvm_rx_statistics(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1307 void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1308 {
1309 iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb));
1310 }
1311
iwl_mvm_window_status_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1312 void iwl_mvm_window_status_notif(struct iwl_mvm *mvm,
1313 struct iwl_rx_cmd_buffer *rxb)
1314 {
1315 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1316 struct iwl_ba_window_status_notif *notif = (void *)pkt->data;
1317 int i;
1318
1319 BUILD_BUG_ON(ARRAY_SIZE(notif->ra_tid) != BA_WINDOW_STREAMS_MAX);
1320 BUILD_BUG_ON(ARRAY_SIZE(notif->mpdu_rx_count) != BA_WINDOW_STREAMS_MAX);
1321 BUILD_BUG_ON(ARRAY_SIZE(notif->bitmap) != BA_WINDOW_STREAMS_MAX);
1322 BUILD_BUG_ON(ARRAY_SIZE(notif->start_seq_num) != BA_WINDOW_STREAMS_MAX);
1323
1324 rcu_read_lock();
1325 for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) {
1326 struct ieee80211_sta *sta;
1327 u8 sta_id, tid;
1328 u64 bitmap;
1329 u32 ssn;
1330 u16 ratid;
1331 u16 received_mpdu;
1332
1333 ratid = le16_to_cpu(notif->ra_tid[i]);
1334 /* check that this TID is valid */
1335 if (!(ratid & BA_WINDOW_STATUS_VALID_MSK))
1336 continue;
1337
1338 received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]);
1339 if (received_mpdu == 0)
1340 continue;
1341
1342 tid = ratid & BA_WINDOW_STATUS_TID_MSK;
1343 /* get the station */
1344 sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK)
1345 >> BA_WINDOW_STATUS_STA_ID_POS;
1346 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1347 if (IS_ERR_OR_NULL(sta))
1348 continue;
1349 bitmap = le64_to_cpu(notif->bitmap[i]);
1350 ssn = le32_to_cpu(notif->start_seq_num[i]);
1351
1352 /* update mac80211 with the bitmap for the reordering buffer */
1353 ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap,
1354 received_mpdu);
1355 }
1356 rcu_read_unlock();
1357 }
1358