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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2015-2017 Intel Deutschland GmbH
6 */
7#include <net/mac80211.h>
8
9#include "iwl-debug.h"
10#include "iwl-io.h"
11#include "iwl-prph.h"
12#include "iwl-csr.h"
13#include "mvm.h"
14#include "fw/api/rs.h"
15#include "fw/img.h"
16
17/*
18 * Will return 0 even if the cmd failed when RFKILL is asserted unless
19 * CMD_WANT_SKB is set in cmd->flags.
20 */
21int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
22{
23 int ret;
24
25#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
26 if (WARN_ON(mvm->d3_test_active))
27 return -EIO;
28#endif
29
30 /*
31 * Synchronous commands from this op-mode must hold
32 * the mutex, this ensures we don't try to send two
33 * (or more) synchronous commands at a time.
34 */
35 if (!(cmd->flags & CMD_ASYNC))
36 lockdep_assert_held(&mvm->mutex);
37
38 ret = iwl_trans_send_cmd(mvm->trans, cmd);
39
40 /*
41 * If the caller wants the SKB, then don't hide any problems, the
42 * caller might access the response buffer which will be NULL if
43 * the command failed.
44 */
45 if (cmd->flags & CMD_WANT_SKB)
46 return ret;
47
48 /*
49 * Silently ignore failures if RFKILL is asserted or
50 * we are in suspend\resume process
51 */
52 if (!ret || ret == -ERFKILL || ret == -EHOSTDOWN)
53 return 0;
54 return ret;
55}
56
57int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
58 u32 flags, u16 len, const void *data)
59{
60 struct iwl_host_cmd cmd = {
61 .id = id,
62 .len = { len, },
63 .data = { data, },
64 .flags = flags,
65 };
66
67 return iwl_mvm_send_cmd(mvm, &cmd);
68}
69
70/*
71 * We assume that the caller set the status to the success value
72 */
73int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
74 u32 *status)
75{
76 struct iwl_rx_packet *pkt;
77 struct iwl_cmd_response *resp;
78 int ret, resp_len;
79
80 lockdep_assert_held(&mvm->mutex);
81
82#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
83 if (WARN_ON(mvm->d3_test_active))
84 return -EIO;
85#endif
86
87 /*
88 * Only synchronous commands can wait for status,
89 * we use WANT_SKB so the caller can't.
90 */
91 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
92 "cmd flags %x", cmd->flags))
93 return -EINVAL;
94
95 cmd->flags |= CMD_WANT_SKB;
96
97 ret = iwl_trans_send_cmd(mvm->trans, cmd);
98 if (ret == -ERFKILL) {
99 /*
100 * The command failed because of RFKILL, don't update
101 * the status, leave it as success and return 0.
102 */
103 return 0;
104 } else if (ret) {
105 return ret;
106 }
107
108 pkt = cmd->resp_pkt;
109
110 resp_len = iwl_rx_packet_payload_len(pkt);
111 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
112 ret = -EIO;
113 goto out_free_resp;
114 }
115
116 resp = (void *)pkt->data;
117 *status = le32_to_cpu(resp->status);
118 out_free_resp:
119 iwl_free_resp(cmd);
120 return ret;
121}
122
123/*
124 * We assume that the caller set the status to the sucess value
125 */
126int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
127 const void *data, u32 *status)
128{
129 struct iwl_host_cmd cmd = {
130 .id = id,
131 .len = { len, },
132 .data = { data, },
133 };
134
135 return iwl_mvm_send_cmd_status(mvm, &cmd, status);
136}
137
138int iwl_mvm_legacy_hw_idx_to_mac80211_idx(u32 rate_n_flags,
139 enum nl80211_band band)
140{
141 int format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
142 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
143 bool is_LB = band == NL80211_BAND_2GHZ;
144
145 if (format == RATE_MCS_LEGACY_OFDM_MSK)
146 return is_LB ? rate + IWL_FIRST_OFDM_RATE :
147 rate;
148
149 /* CCK is not allowed in HB */
150 return is_LB ? rate : -1;
151}
152
153int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
154 enum nl80211_band band)
155{
156 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK_V1;
157 int idx;
158 int band_offset = 0;
159
160 /* Legacy rate format, search for match in table */
161 if (band != NL80211_BAND_2GHZ)
162 band_offset = IWL_FIRST_OFDM_RATE;
163 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
164 if (iwl_fw_rate_idx_to_plcp(idx) == rate)
165 return idx - band_offset;
166
167 return -1;
168}
169
170u8 iwl_mvm_mac80211_idx_to_hwrate(const struct iwl_fw *fw, int rate_idx)
171{
172 if (iwl_fw_lookup_cmd_ver(fw, TX_CMD, 0) > 8)
173 /* In the new rate legacy rates are indexed:
174 * 0 - 3 for CCK and 0 - 7 for OFDM.
175 */
176 return (rate_idx >= IWL_FIRST_OFDM_RATE ?
177 rate_idx - IWL_FIRST_OFDM_RATE :
178 rate_idx);
179
180 return iwl_fw_rate_idx_to_plcp(rate_idx);
181}
182
183u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac)
184{
185 static const u8 mac80211_ac_to_ucode_ac[] = {
186 AC_VO,
187 AC_VI,
188 AC_BE,
189 AC_BK
190 };
191
192 return mac80211_ac_to_ucode_ac[ac];
193}
194
195void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
196{
197 struct iwl_rx_packet *pkt = rxb_addr(rxb);
198 struct iwl_error_resp *err_resp = (void *)pkt->data;
199
200 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
201 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
202 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
203 le16_to_cpu(err_resp->bad_cmd_seq_num),
204 le32_to_cpu(err_resp->error_service));
205 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n",
206 le64_to_cpu(err_resp->timestamp));
207}
208
209/*
210 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
211 * The parameter should also be a combination of ANT_[ABC].
212 */
213u8 first_antenna(u8 mask)
214{
215 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
216 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
217 return BIT(0);
218 return BIT(ffs(mask) - 1);
219}
220
221#define MAX_ANT_NUM 2
222/*
223 * Toggles between TX antennas to send the probe request on.
224 * Receives the bitmask of valid TX antennas and the *index* used
225 * for the last TX, and returns the next valid *index* to use.
226 * In order to set it in the tx_cmd, must do BIT(idx).
227 */
228u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
229{
230 u8 ind = last_idx;
231 int i;
232
233 for (i = 0; i < MAX_ANT_NUM; i++) {
234 ind = (ind + 1) % MAX_ANT_NUM;
235 if (valid & BIT(ind))
236 return ind;
237 }
238
239 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
240 return last_idx;
241}
242
243/**
244 * iwl_mvm_send_lq_cmd() - Send link quality command
245 * @mvm: Driver data.
246 * @lq: Link quality command to send.
247 *
248 * The link quality command is sent as the last step of station creation.
249 * This is the special case in which init is set and we call a callback in
250 * this case to clear the state indicating that station creation is in
251 * progress.
252 *
253 * Returns: an error code indicating success or failure
254 */
255int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq)
256{
257 struct iwl_host_cmd cmd = {
258 .id = LQ_CMD,
259 .len = { sizeof(struct iwl_lq_cmd), },
260 .flags = CMD_ASYNC,
261 .data = { lq, },
262 };
263
264 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA ||
265 iwl_mvm_has_tlc_offload(mvm)))
266 return -EINVAL;
267
268 return iwl_mvm_send_cmd(mvm, &cmd);
269}
270
271/**
272 * iwl_mvm_update_smps - Get a request to change the SMPS mode
273 * @mvm: Driver data.
274 * @vif: Pointer to the ieee80211_vif structure
275 * @req_type: The part of the driver who call for a change.
276 * @smps_request: The request to change the SMPS mode.
277 * @link_id: for MLO link_id, otherwise 0 (deflink)
278 *
279 * Get a requst to change the SMPS mode,
280 * and change it according to all other requests in the driver.
281 */
282void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
283 enum iwl_mvm_smps_type_request req_type,
284 enum ieee80211_smps_mode smps_request,
285 unsigned int link_id)
286{
287 struct iwl_mvm_vif *mvmvif;
288 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
289 int i;
290
291 lockdep_assert_held(&mvm->mutex);
292
293 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
294 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
295 return;
296
297 if (vif->type != NL80211_IFTYPE_STATION)
298 return;
299
300 mvmvif = iwl_mvm_vif_from_mac80211(vif);
301
302 if (WARN_ON_ONCE(!mvmvif->link[link_id]))
303 return;
304
305 mvmvif->link[link_id]->smps_requests[req_type] = smps_request;
306 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
307 if (mvmvif->link[link_id]->smps_requests[i] ==
308 IEEE80211_SMPS_STATIC) {
309 smps_mode = IEEE80211_SMPS_STATIC;
310 break;
311 }
312 if (mvmvif->link[link_id]->smps_requests[i] ==
313 IEEE80211_SMPS_DYNAMIC)
314 smps_mode = IEEE80211_SMPS_DYNAMIC;
315 }
316
317 /* SMPS is disabled in eSR */
318 if (mvmvif->esr_active)
319 smps_mode = IEEE80211_SMPS_OFF;
320
321 ieee80211_request_smps(vif, link_id, smps_mode);
322}
323
324void iwl_mvm_update_smps_on_active_links(struct iwl_mvm *mvm,
325 struct ieee80211_vif *vif,
326 enum iwl_mvm_smps_type_request req_type,
327 enum ieee80211_smps_mode smps_request)
328{
329 struct ieee80211_bss_conf *link_conf;
330 unsigned int link_id;
331
332 rcu_read_lock();
333 for_each_vif_active_link(vif, link_conf, link_id)
334 iwl_mvm_update_smps(mvm, vif, req_type, smps_request,
335 link_id);
336 rcu_read_unlock();
337}
338
339static bool iwl_wait_stats_complete(struct iwl_notif_wait_data *notif_wait,
340 struct iwl_rx_packet *pkt, void *data)
341{
342 WARN_ON(pkt->hdr.cmd != STATISTICS_NOTIFICATION);
343
344 return true;
345}
346
347static int iwl_mvm_request_system_statistics(struct iwl_mvm *mvm, bool clear,
348 u8 cmd_ver)
349{
350 struct iwl_system_statistics_cmd system_cmd = {
351 .cfg_mask = clear ?
352 cpu_to_le32(IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK) :
353 cpu_to_le32(IWL_STATS_CFG_FLG_RESET_MSK |
354 IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK),
355 .type_id_mask = cpu_to_le32(IWL_STATS_NTFY_TYPE_ID_OPER |
356 IWL_STATS_NTFY_TYPE_ID_OPER_PART1),
357 };
358 struct iwl_host_cmd cmd = {
359 .id = WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_CMD),
360 .len[0] = sizeof(system_cmd),
361 .data[0] = &system_cmd,
362 };
363 struct iwl_notification_wait stats_wait;
364 static const u16 stats_complete[] = {
365 WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_END_NOTIF),
366 };
367 int ret;
368
369 if (cmd_ver != 1) {
370 IWL_FW_CHECK_FAILED(mvm,
371 "Invalid system statistics command version:%d\n",
372 cmd_ver);
373 return -EOPNOTSUPP;
374 }
375
376 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait,
377 stats_complete, ARRAY_SIZE(stats_complete),
378 NULL, NULL);
379
380 mvm->statistics_clear = clear;
381 ret = iwl_mvm_send_cmd(mvm, &cmd);
382 if (ret) {
383 iwl_remove_notification(&mvm->notif_wait, &stats_wait);
384 return ret;
385 }
386
387 /* 500ms for OPERATIONAL, PART1 and END notification should be enough
388 * for FW to collect data from all LMACs and send
389 * STATISTICS_NOTIFICATION to host
390 */
391 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 2);
392 if (ret)
393 return ret;
394
395 if (clear)
396 iwl_mvm_accu_radio_stats(mvm);
397
398 return ret;
399}
400
401int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
402{
403 struct iwl_statistics_cmd scmd = {
404 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
405 };
406
407 struct iwl_host_cmd cmd = {
408 .id = STATISTICS_CMD,
409 .len[0] = sizeof(scmd),
410 .data[0] = &scmd,
411 };
412 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
413 WIDE_ID(SYSTEM_GROUP,
414 SYSTEM_STATISTICS_CMD),
415 IWL_FW_CMD_VER_UNKNOWN);
416 int ret;
417
418 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)
419 return iwl_mvm_request_system_statistics(mvm, clear, cmd_ver);
420
421 /* From version 15 - STATISTICS_NOTIFICATION, the reply for
422 * STATISTICS_CMD is empty, and the response is with
423 * STATISTICS_NOTIFICATION notification
424 */
425 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
426 STATISTICS_NOTIFICATION, 0) < 15) {
427 cmd.flags = CMD_WANT_SKB;
428
429 ret = iwl_mvm_send_cmd(mvm, &cmd);
430 if (ret)
431 return ret;
432
433 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
434 iwl_free_resp(&cmd);
435 } else {
436 struct iwl_notification_wait stats_wait;
437 static const u16 stats_complete[] = {
438 STATISTICS_NOTIFICATION,
439 };
440
441 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait,
442 stats_complete, ARRAY_SIZE(stats_complete),
443 iwl_wait_stats_complete, NULL);
444
445 ret = iwl_mvm_send_cmd(mvm, &cmd);
446 if (ret) {
447 iwl_remove_notification(&mvm->notif_wait, &stats_wait);
448 return ret;
449 }
450
451 /* 200ms should be enough for FW to collect data from all
452 * LMACs and send STATISTICS_NOTIFICATION to host
453 */
454 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 5);
455 if (ret)
456 return ret;
457 }
458
459 if (clear)
460 iwl_mvm_accu_radio_stats(mvm);
461
462 return 0;
463}
464
465void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
466{
467 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
468 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
469 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
470 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
471}
472
473struct iwl_mvm_diversity_iter_data {
474 struct iwl_mvm_phy_ctxt *ctxt;
475 bool result;
476};
477
478static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
479 struct ieee80211_vif *vif)
480{
481 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
482 struct iwl_mvm_diversity_iter_data *data = _data;
483 int i, link_id;
484
485 for_each_mvm_vif_valid_link(mvmvif, link_id) {
486 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id];
487
488 if (link_info->phy_ctxt != data->ctxt)
489 continue;
490
491 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
492 if (link_info->smps_requests[i] == IEEE80211_SMPS_STATIC ||
493 link_info->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) {
494 data->result = false;
495 break;
496 }
497 }
498 }
499}
500
501bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm,
502 struct iwl_mvm_phy_ctxt *ctxt)
503{
504 struct iwl_mvm_diversity_iter_data data = {
505 .ctxt = ctxt,
506 .result = true,
507 };
508
509 lockdep_assert_held(&mvm->mutex);
510
511 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
512 return false;
513
514 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
515 return false;
516
517 if (mvm->cfg->rx_with_siso_diversity)
518 return false;
519
520 ieee80211_iterate_active_interfaces_atomic(
521 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
522 iwl_mvm_diversity_iter, &data);
523
524 return data.result;
525}
526
527void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm,
528 bool low_latency, u16 mac_id)
529{
530 struct iwl_mac_low_latency_cmd cmd = {
531 .mac_id = cpu_to_le32(mac_id)
532 };
533
534 if (!fw_has_capa(&mvm->fw->ucode_capa,
535 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA))
536 return;
537
538 if (low_latency) {
539 /* currently we don't care about the direction */
540 cmd.low_latency_rx = 1;
541 cmd.low_latency_tx = 1;
542 }
543
544 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, LOW_LATENCY_CMD),
545 0, sizeof(cmd), &cmd))
546 IWL_ERR(mvm, "Failed to send low latency command\n");
547}
548
549int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
550 bool low_latency,
551 enum iwl_mvm_low_latency_cause cause)
552{
553 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
554 int res;
555 bool prev;
556
557 lockdep_assert_held(&mvm->mutex);
558
559 prev = iwl_mvm_vif_low_latency(mvmvif);
560 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause);
561
562 low_latency = iwl_mvm_vif_low_latency(mvmvif);
563
564 if (low_latency == prev)
565 return 0;
566
567 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id);
568
569 res = iwl_mvm_update_quotas(mvm, false, NULL);
570 if (res)
571 return res;
572
573 iwl_mvm_bt_coex_vif_change(mvm);
574
575 return iwl_mvm_power_update_mac(mvm);
576}
577
578struct iwl_mvm_low_latency_iter {
579 bool result;
580 bool result_per_band[NUM_NL80211_BANDS];
581};
582
583static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
584{
585 struct iwl_mvm_low_latency_iter *result = _data;
586 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
587 enum nl80211_band band;
588
589 if (iwl_mvm_vif_low_latency(mvmvif)) {
590 result->result = true;
591
592 if (!mvmvif->deflink.phy_ctxt)
593 return;
594
595 band = mvmvif->deflink.phy_ctxt->channel->band;
596 result->result_per_band[band] = true;
597 }
598}
599
600bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
601{
602 struct iwl_mvm_low_latency_iter data = {};
603
604 ieee80211_iterate_active_interfaces_atomic(
605 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
606 iwl_mvm_ll_iter, &data);
607
608 return data.result;
609}
610
611bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band)
612{
613 struct iwl_mvm_low_latency_iter data = {};
614
615 ieee80211_iterate_active_interfaces_atomic(
616 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
617 iwl_mvm_ll_iter, &data);
618
619 return data.result_per_band[band];
620}
621
622struct iwl_bss_iter_data {
623 struct ieee80211_vif *vif;
624 bool error;
625};
626
627static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
628 struct ieee80211_vif *vif)
629{
630 struct iwl_bss_iter_data *data = _data;
631
632 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
633 return;
634
635 if (data->vif) {
636 data->error = true;
637 return;
638 }
639
640 data->vif = vif;
641}
642
643struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
644{
645 struct iwl_bss_iter_data bss_iter_data = {};
646
647 ieee80211_iterate_active_interfaces_atomic(
648 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
649 iwl_mvm_bss_iface_iterator, &bss_iter_data);
650
651 if (bss_iter_data.error) {
652 IWL_ERR(mvm, "More than one managed interface active!\n");
653 return ERR_PTR(-EINVAL);
654 }
655
656 return bss_iter_data.vif;
657}
658
659struct iwl_bss_find_iter_data {
660 struct ieee80211_vif *vif;
661 u32 macid;
662};
663
664static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac,
665 struct ieee80211_vif *vif)
666{
667 struct iwl_bss_find_iter_data *data = _data;
668 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
669
670 if (mvmvif->id == data->macid)
671 data->vif = vif;
672}
673
674struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid)
675{
676 struct iwl_bss_find_iter_data data = {
677 .macid = macid,
678 };
679
680 lockdep_assert_held(&mvm->mutex);
681
682 ieee80211_iterate_active_interfaces_atomic(
683 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
684 iwl_mvm_bss_find_iface_iterator, &data);
685
686 return data.vif;
687}
688
689struct iwl_sta_iter_data {
690 bool assoc;
691};
692
693static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
694 struct ieee80211_vif *vif)
695{
696 struct iwl_sta_iter_data *data = _data;
697
698 if (vif->type != NL80211_IFTYPE_STATION)
699 return;
700
701 if (vif->cfg.assoc)
702 data->assoc = true;
703}
704
705bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
706{
707 struct iwl_sta_iter_data data = {
708 .assoc = false,
709 };
710
711 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
712 IEEE80211_IFACE_ITER_NORMAL,
713 iwl_mvm_sta_iface_iterator,
714 &data);
715 return data.assoc;
716}
717
718unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
719 struct ieee80211_vif *vif,
720 bool tdls, bool cmd_q)
721{
722 struct iwl_fw_dbg_trigger_tlv *trigger;
723 struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
724 unsigned int default_timeout = cmd_q ?
725 IWL_DEF_WD_TIMEOUT :
726 mvm->trans->trans_cfg->base_params->wd_timeout;
727
728 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) {
729 /*
730 * We can't know when the station is asleep or awake, so we
731 * must disable the queue hang detection.
732 */
733 if (fw_has_capa(&mvm->fw->ucode_capa,
734 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
735 vif && vif->type == NL80211_IFTYPE_AP)
736 return IWL_WATCHDOG_DISABLED;
737 return default_timeout;
738 }
739
740 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
741 txq_timer = (void *)trigger->data;
742
743 if (tdls)
744 return le32_to_cpu(txq_timer->tdls);
745
746 if (cmd_q)
747 return le32_to_cpu(txq_timer->command_queue);
748
749 if (WARN_ON(!vif))
750 return default_timeout;
751
752 switch (ieee80211_vif_type_p2p(vif)) {
753 case NL80211_IFTYPE_ADHOC:
754 return le32_to_cpu(txq_timer->ibss);
755 case NL80211_IFTYPE_STATION:
756 return le32_to_cpu(txq_timer->bss);
757 case NL80211_IFTYPE_AP:
758 return le32_to_cpu(txq_timer->softap);
759 case NL80211_IFTYPE_P2P_CLIENT:
760 return le32_to_cpu(txq_timer->p2p_client);
761 case NL80211_IFTYPE_P2P_GO:
762 return le32_to_cpu(txq_timer->p2p_go);
763 case NL80211_IFTYPE_P2P_DEVICE:
764 return le32_to_cpu(txq_timer->p2p_device);
765 case NL80211_IFTYPE_MONITOR:
766 return default_timeout;
767 default:
768 WARN_ON(1);
769 return mvm->trans->trans_cfg->base_params->wd_timeout;
770 }
771}
772
773void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
774 const char *errmsg)
775{
776 struct iwl_fw_dbg_trigger_tlv *trig;
777 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
778
779 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
780 FW_DBG_TRIGGER_MLME);
781 if (!trig)
782 goto out;
783
784 trig_mlme = (void *)trig->data;
785
786 if (trig_mlme->stop_connection_loss &&
787 --trig_mlme->stop_connection_loss)
788 goto out;
789
790 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
791
792out:
793 ieee80211_connection_loss(vif);
794}
795
796void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
797 struct ieee80211_vif *vif,
798 const struct ieee80211_sta *sta,
799 u16 tid)
800{
801 struct iwl_fw_dbg_trigger_tlv *trig;
802 struct iwl_fw_dbg_trigger_ba *ba_trig;
803
804 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
805 FW_DBG_TRIGGER_BA);
806 if (!trig)
807 return;
808
809 ba_trig = (void *)trig->data;
810
811 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid)))
812 return;
813
814 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
815 "Frame from %pM timed out, tid %d",
816 sta->addr, tid);
817}
818
819u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed)
820{
821 if (!elapsed)
822 return 0;
823
824 return (100 * airtime / elapsed) / USEC_PER_MSEC;
825}
826
827static enum iwl_mvm_traffic_load
828iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed)
829{
830 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed);
831
832 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH)
833 return IWL_MVM_TRAFFIC_HIGH;
834 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH)
835 return IWL_MVM_TRAFFIC_MEDIUM;
836
837 return IWL_MVM_TRAFFIC_LOW;
838}
839
840static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
841{
842 struct iwl_mvm *mvm = _data;
843 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
844 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC;
845
846 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER)
847 return;
848
849 low_latency = mvm->tcm.result.low_latency[mvmvif->id];
850
851 if (!mvm->tcm.result.change[mvmvif->id] &&
852 prev == low_latency) {
853 iwl_mvm_update_quotas(mvm, false, NULL);
854 return;
855 }
856
857 if (prev != low_latency) {
858 /* this sends traffic load and updates quota as well */
859 iwl_mvm_update_low_latency(mvm, vif, low_latency,
860 LOW_LATENCY_TRAFFIC);
861 } else {
862 iwl_mvm_update_quotas(mvm, false, NULL);
863 }
864}
865
866static void iwl_mvm_tcm_results(struct iwl_mvm *mvm)
867{
868 mutex_lock(&mvm->mutex);
869
870 ieee80211_iterate_active_interfaces(
871 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
872 iwl_mvm_tcm_iter, mvm);
873
874 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
875 iwl_mvm_config_scan(mvm);
876
877 mutex_unlock(&mvm->mutex);
878}
879
880static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk)
881{
882 struct iwl_mvm *mvm;
883 struct iwl_mvm_vif *mvmvif;
884 struct ieee80211_vif *vif;
885
886 mvmvif = container_of(wk, struct iwl_mvm_vif,
887 uapsd_nonagg_detected_wk.work);
888 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
889 mvm = mvmvif->mvm;
890
891 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions)
892 return;
893
894 /* remember that this AP is broken */
895 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr,
896 vif->bss_conf.bssid, ETH_ALEN);
897 mvm->uapsd_noagg_bssid_write_idx++;
898 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN)
899 mvm->uapsd_noagg_bssid_write_idx = 0;
900
901 iwl_mvm_connection_loss(mvm, vif,
902 "AP isn't using AMPDU with uAPSD enabled");
903}
904
905static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm,
906 struct ieee80211_vif *vif)
907{
908 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
909
910 if (vif->type != NL80211_IFTYPE_STATION)
911 return;
912
913 if (!vif->cfg.assoc)
914 return;
915
916 if (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd &&
917 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd &&
918 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd &&
919 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd)
920 return;
921
922 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected)
923 return;
924
925 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true;
926 IWL_INFO(mvm,
927 "detected AP should do aggregation but isn't, likely due to U-APSD\n");
928 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk,
929 15 * HZ);
930}
931
932static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm,
933 unsigned int elapsed,
934 int mac)
935{
936 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes;
937 u64 tpt;
938 unsigned long rate;
939 struct ieee80211_vif *vif;
940
941 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate);
942
943 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions ||
944 mvm->tcm.data[mac].uapsd_nonagg_detect.detected)
945 return;
946
947 if (iwl_mvm_has_new_rx_api(mvm)) {
948 tpt = 8 * bytes; /* kbps */
949 do_div(tpt, elapsed);
950 rate *= 1000; /* kbps */
951 if (tpt < 22 * rate / 100)
952 return;
953 } else {
954 /*
955 * the rate here is actually the threshold, in 100Kbps units,
956 * so do the needed conversion from bytes to 100Kbps:
957 * 100kb = bits / (100 * 1000),
958 * 100kbps = 100kb / (msecs / 1000) ==
959 * (bits / (100 * 1000)) / (msecs / 1000) ==
960 * bits / (100 * msecs)
961 */
962 tpt = (8 * bytes);
963 do_div(tpt, elapsed * 100);
964 if (tpt < rate)
965 return;
966 }
967
968 rcu_read_lock();
969 vif = rcu_dereference(mvm->vif_id_to_mac[mac]);
970 if (vif)
971 iwl_mvm_uapsd_agg_disconnect(mvm, vif);
972 rcu_read_unlock();
973}
974
975static void iwl_mvm_tcm_iterator(void *_data, u8 *mac,
976 struct ieee80211_vif *vif)
977{
978 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
979 u32 *band = _data;
980
981 if (!mvmvif->deflink.phy_ctxt)
982 return;
983
984 band[mvmvif->id] = mvmvif->deflink.phy_ctxt->channel->band;
985}
986
987static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm,
988 unsigned long ts,
989 bool handle_uapsd)
990{
991 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts);
992 unsigned int uapsd_elapsed =
993 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts);
994 u32 total_airtime = 0;
995 u32 band_airtime[NUM_NL80211_BANDS] = {0};
996 u32 band[NUM_MAC_INDEX_DRIVER] = {0};
997 int ac, mac, i;
998 bool low_latency = false;
999 enum iwl_mvm_traffic_load load, band_load;
1000 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD);
1001
1002 if (handle_ll)
1003 mvm->tcm.ll_ts = ts;
1004 if (handle_uapsd)
1005 mvm->tcm.uapsd_nonagg_ts = ts;
1006
1007 mvm->tcm.result.elapsed = elapsed;
1008
1009 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1010 IEEE80211_IFACE_ITER_NORMAL,
1011 iwl_mvm_tcm_iterator,
1012 &band);
1013
1014 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1015 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1016 u32 vo_vi_pkts = 0;
1017 u32 airtime = mdata->rx.airtime + mdata->tx.airtime;
1018
1019 total_airtime += airtime;
1020 band_airtime[band[mac]] += airtime;
1021
1022 load = iwl_mvm_tcm_load(mvm, airtime, elapsed);
1023 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac];
1024 mvm->tcm.result.load[mac] = load;
1025 mvm->tcm.result.airtime[mac] = airtime;
1026
1027 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++)
1028 vo_vi_pkts += mdata->rx.pkts[ac] +
1029 mdata->tx.pkts[ac];
1030
1031 /* enable immediately with enough packets but defer disabling */
1032 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH)
1033 mvm->tcm.result.low_latency[mac] = true;
1034 else if (handle_ll)
1035 mvm->tcm.result.low_latency[mac] = false;
1036
1037 if (handle_ll) {
1038 /* clear old data */
1039 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1040 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1041 }
1042 low_latency |= mvm->tcm.result.low_latency[mac];
1043
1044 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd)
1045 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed,
1046 mac);
1047 /* clear old data */
1048 if (handle_uapsd)
1049 mdata->uapsd_nonagg_detect.rx_bytes = 0;
1050 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1051 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1052 }
1053
1054 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed);
1055 mvm->tcm.result.global_load = load;
1056
1057 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1058 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed);
1059 mvm->tcm.result.band_load[i] = band_load;
1060 }
1061
1062 /*
1063 * If the current load isn't low we need to force re-evaluation
1064 * in the TCM period, so that we can return to low load if there
1065 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get
1066 * triggered by traffic).
1067 */
1068 if (load != IWL_MVM_TRAFFIC_LOW)
1069 return MVM_TCM_PERIOD;
1070 /*
1071 * If low-latency is active we need to force re-evaluation after
1072 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency
1073 * when there's no traffic at all.
1074 */
1075 if (low_latency)
1076 return MVM_LL_PERIOD;
1077 /*
1078 * Otherwise, we don't need to run the work struct because we're
1079 * in the default "idle" state - traffic indication is low (which
1080 * also covers the "no traffic" case) and low-latency is disabled
1081 * so there's no state that may need to be disabled when there's
1082 * no traffic at all.
1083 *
1084 * Note that this has no impact on the regular scheduling of the
1085 * updates triggered by traffic - those happen whenever one of the
1086 * two timeouts expire (if there's traffic at all.)
1087 */
1088 return 0;
1089}
1090
1091void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm)
1092{
1093 unsigned long ts = jiffies;
1094 bool handle_uapsd =
1095 time_after(ts, mvm->tcm.uapsd_nonagg_ts +
1096 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD));
1097
1098 spin_lock(&mvm->tcm.lock);
1099 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1100 spin_unlock(&mvm->tcm.lock);
1101 return;
1102 }
1103 spin_unlock(&mvm->tcm.lock);
1104
1105 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) {
1106 mutex_lock(&mvm->mutex);
1107 if (iwl_mvm_request_statistics(mvm, true))
1108 handle_uapsd = false;
1109 mutex_unlock(&mvm->mutex);
1110 }
1111
1112 spin_lock(&mvm->tcm.lock);
1113 /* re-check if somebody else won the recheck race */
1114 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1115 /* calculate statistics */
1116 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts,
1117 handle_uapsd);
1118
1119 /* the memset needs to be visible before the timestamp */
1120 smp_mb();
1121 mvm->tcm.ts = ts;
1122 if (work_delay)
1123 schedule_delayed_work(&mvm->tcm.work, work_delay);
1124 }
1125 spin_unlock(&mvm->tcm.lock);
1126
1127 iwl_mvm_tcm_results(mvm);
1128}
1129
1130void iwl_mvm_tcm_work(struct work_struct *work)
1131{
1132 struct delayed_work *delayed_work = to_delayed_work(work);
1133 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
1134 tcm.work);
1135
1136 iwl_mvm_recalc_tcm(mvm);
1137}
1138
1139void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel)
1140{
1141 spin_lock_bh(&mvm->tcm.lock);
1142 mvm->tcm.paused = true;
1143 spin_unlock_bh(&mvm->tcm.lock);
1144 if (with_cancel)
1145 cancel_delayed_work_sync(&mvm->tcm.work);
1146}
1147
1148void iwl_mvm_resume_tcm(struct iwl_mvm *mvm)
1149{
1150 int mac;
1151 bool low_latency = false;
1152
1153 spin_lock_bh(&mvm->tcm.lock);
1154 mvm->tcm.ts = jiffies;
1155 mvm->tcm.ll_ts = jiffies;
1156 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1157 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1158
1159 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1160 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1161 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1162 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1163
1164 if (mvm->tcm.result.low_latency[mac])
1165 low_latency = true;
1166 }
1167 /* The TCM data needs to be reset before "paused" flag changes */
1168 smp_mb();
1169 mvm->tcm.paused = false;
1170
1171 /*
1172 * if the current load is not low or low latency is active, force
1173 * re-evaluation to cover the case of no traffic.
1174 */
1175 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW)
1176 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD);
1177 else if (low_latency)
1178 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD);
1179
1180 spin_unlock_bh(&mvm->tcm.lock);
1181}
1182
1183void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1184{
1185 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1186
1187 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk,
1188 iwl_mvm_tcm_uapsd_nonagg_detected_wk);
1189}
1190
1191void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1192{
1193 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1194
1195 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk);
1196}
1197
1198u32 iwl_mvm_get_systime(struct iwl_mvm *mvm)
1199{
1200 u32 reg_addr = DEVICE_SYSTEM_TIME_REG;
1201
1202 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 &&
1203 mvm->trans->cfg->gp2_reg_addr)
1204 reg_addr = mvm->trans->cfg->gp2_reg_addr;
1205
1206 return iwl_read_prph(mvm->trans, reg_addr);
1207}
1208
1209void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type,
1210 u32 *gp2, u64 *boottime, ktime_t *realtime)
1211{
1212 bool ps_disabled;
1213
1214 lockdep_assert_held(&mvm->mutex);
1215
1216 /* Disable power save when reading GP2 */
1217 ps_disabled = mvm->ps_disabled;
1218 if (!ps_disabled) {
1219 mvm->ps_disabled = true;
1220 iwl_mvm_power_update_device(mvm);
1221 }
1222
1223 *gp2 = iwl_mvm_get_systime(mvm);
1224
1225 if (clock_type == CLOCK_BOOTTIME && boottime)
1226 *boottime = ktime_get_boottime_ns();
1227 else if (clock_type == CLOCK_REALTIME && realtime)
1228 *realtime = ktime_get_real();
1229
1230 if (!ps_disabled) {
1231 mvm->ps_disabled = ps_disabled;
1232 iwl_mvm_power_update_device(mvm);
1233 }
1234}
1235
1236/* Find if at least two links from different vifs use same channel
1237 * FIXME: consider having a refcount array in struct iwl_mvm_vif for
1238 * used phy_ctxt ids.
1239 */
1240bool iwl_mvm_have_links_same_channel(struct iwl_mvm_vif *vif1,
1241 struct iwl_mvm_vif *vif2)
1242{
1243 unsigned int i, j;
1244
1245 for_each_mvm_vif_valid_link(vif1, i) {
1246 for_each_mvm_vif_valid_link(vif2, j) {
1247 if (vif1->link[i]->phy_ctxt == vif2->link[j]->phy_ctxt)
1248 return true;
1249 }
1250 }
1251
1252 return false;
1253}
1254
1255bool iwl_mvm_vif_is_active(struct iwl_mvm_vif *mvmvif)
1256{
1257 unsigned int i;
1258
1259 /* FIXME: can it fail when phy_ctxt is assigned? */
1260 for_each_mvm_vif_valid_link(mvmvif, i) {
1261 if (mvmvif->link[i]->phy_ctxt &&
1262 mvmvif->link[i]->phy_ctxt->id < NUM_PHY_CTX)
1263 return true;
1264 }
1265
1266 return false;
1267}