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5
6
7#include "mac.h"
8
9#include <net/mac80211.h>
10#include "hif.h"
11#include "core.h"
12#include "debug.h"
13#include "wmi.h"
14#include "wmi-ops.h"
15
16static const struct wiphy_wowlan_support ath10k_wowlan_support = {
17 .flags = WIPHY_WOWLAN_DISCONNECT |
18 WIPHY_WOWLAN_MAGIC_PKT,
19 .pattern_min_len = WOW_MIN_PATTERN_SIZE,
20 .pattern_max_len = WOW_MAX_PATTERN_SIZE,
21 .max_pkt_offset = WOW_MAX_PKT_OFFSET,
22};
23
24static int ath10k_wow_vif_cleanup(struct ath10k_vif *arvif)
25{
26 struct ath10k *ar = arvif->ar;
27 int i, ret;
28
29 for (i = 0; i < WOW_EVENT_MAX; i++) {
30 ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0);
31 if (ret) {
32 ath10k_warn(ar, "failed to issue wow wakeup for event %s on vdev %i: %d\n",
33 wow_wakeup_event(i), arvif->vdev_id, ret);
34 return ret;
35 }
36 }
37
38 for (i = 0; i < ar->wow.max_num_patterns; i++) {
39 ret = ath10k_wmi_wow_del_pattern(ar, arvif->vdev_id, i);
40 if (ret) {
41 ath10k_warn(ar, "failed to delete wow pattern %d for vdev %i: %d\n",
42 i, arvif->vdev_id, ret);
43 return ret;
44 }
45 }
46
47 return 0;
48}
49
50static int ath10k_wow_cleanup(struct ath10k *ar)
51{
52 struct ath10k_vif *arvif;
53 int ret;
54
55 lockdep_assert_held(&ar->conf_mutex);
56
57 list_for_each_entry(arvif, &ar->arvifs, list) {
58 ret = ath10k_wow_vif_cleanup(arvif);
59 if (ret) {
60 ath10k_warn(ar, "failed to clean wow wakeups on vdev %i: %d\n",
61 arvif->vdev_id, ret);
62 return ret;
63 }
64 }
65
66 return 0;
67}
68
69
70
71
72
73
74
75
76
77
78
79
80static void ath10k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new,
81 const struct cfg80211_pkt_pattern *old)
82{
83 u8 hdr_8023_pattern[ETH_HLEN] = {};
84 u8 hdr_8023_bit_mask[ETH_HLEN] = {};
85 u8 hdr_80211_pattern[WOW_HDR_LEN] = {};
86 u8 hdr_80211_bit_mask[WOW_HDR_LEN] = {};
87
88 int total_len = old->pkt_offset + old->pattern_len;
89 int hdr_80211_end_offset;
90
91 struct ieee80211_hdr_3addr *new_hdr_pattern =
92 (struct ieee80211_hdr_3addr *)hdr_80211_pattern;
93 struct ieee80211_hdr_3addr *new_hdr_mask =
94 (struct ieee80211_hdr_3addr *)hdr_80211_bit_mask;
95 struct ethhdr *old_hdr_pattern = (struct ethhdr *)hdr_8023_pattern;
96 struct ethhdr *old_hdr_mask = (struct ethhdr *)hdr_8023_bit_mask;
97 int hdr_len = sizeof(*new_hdr_pattern);
98
99 struct rfc1042_hdr *new_rfc_pattern =
100 (struct rfc1042_hdr *)(hdr_80211_pattern + hdr_len);
101 struct rfc1042_hdr *new_rfc_mask =
102 (struct rfc1042_hdr *)(hdr_80211_bit_mask + hdr_len);
103 int rfc_len = sizeof(*new_rfc_pattern);
104
105 memcpy(hdr_8023_pattern + old->pkt_offset,
106 old->pattern, ETH_HLEN - old->pkt_offset);
107 memcpy(hdr_8023_bit_mask + old->pkt_offset,
108 old->mask, ETH_HLEN - old->pkt_offset);
109
110
111 memcpy(new_hdr_pattern->addr1, old_hdr_pattern->h_dest, ETH_ALEN);
112 memcpy(new_hdr_mask->addr1, old_hdr_mask->h_dest, ETH_ALEN);
113
114
115 memcpy(new_hdr_pattern->addr3, old_hdr_pattern->h_source, ETH_ALEN);
116 memcpy(new_hdr_mask->addr3, old_hdr_mask->h_source, ETH_ALEN);
117
118
119 memcpy(&new_rfc_pattern->snap_type,
120 &old_hdr_pattern->h_proto,
121 sizeof(old_hdr_pattern->h_proto));
122 memcpy(&new_rfc_mask->snap_type,
123 &old_hdr_mask->h_proto,
124 sizeof(old_hdr_mask->h_proto));
125
126
127 if (old->pkt_offset < ETH_ALEN)
128 new->pkt_offset = old->pkt_offset +
129 offsetof(struct ieee80211_hdr_3addr, addr1);
130 else if (old->pkt_offset < offsetof(struct ethhdr, h_proto))
131 new->pkt_offset = old->pkt_offset +
132 offsetof(struct ieee80211_hdr_3addr, addr3) -
133 offsetof(struct ethhdr, h_source);
134 else
135 new->pkt_offset = old->pkt_offset + hdr_len + rfc_len - ETH_HLEN;
136
137
138 if (total_len > ETH_HLEN)
139 hdr_80211_end_offset = hdr_len + rfc_len;
140 else if (total_len > offsetof(struct ethhdr, h_proto))
141 hdr_80211_end_offset = hdr_len + rfc_len + total_len - ETH_HLEN;
142 else if (total_len > ETH_ALEN)
143 hdr_80211_end_offset = total_len - ETH_ALEN +
144 offsetof(struct ieee80211_hdr_3addr, addr3);
145 else
146 hdr_80211_end_offset = total_len +
147 offsetof(struct ieee80211_hdr_3addr, addr1);
148
149 new->pattern_len = hdr_80211_end_offset - new->pkt_offset;
150
151 memcpy((u8 *)new->pattern,
152 hdr_80211_pattern + new->pkt_offset,
153 new->pattern_len);
154 memcpy((u8 *)new->mask,
155 hdr_80211_bit_mask + new->pkt_offset,
156 new->pattern_len);
157
158 if (total_len > ETH_HLEN) {
159
160 memcpy((u8 *)new->pattern + new->pattern_len,
161 (void *)old->pattern + ETH_HLEN - old->pkt_offset,
162 total_len - ETH_HLEN);
163 memcpy((u8 *)new->mask + new->pattern_len,
164 (void *)old->mask + ETH_HLEN - old->pkt_offset,
165 total_len - ETH_HLEN);
166
167 new->pattern_len += total_len - ETH_HLEN;
168 }
169}
170
171static int ath10k_wmi_pno_check(struct ath10k *ar, u32 vdev_id,
172 struct cfg80211_sched_scan_request *nd_config,
173 struct wmi_pno_scan_req *pno)
174{
175 int i, j, ret = 0;
176 u8 ssid_len;
177
178 pno->enable = 1;
179 pno->vdev_id = vdev_id;
180 pno->uc_networks_count = nd_config->n_match_sets;
181
182 if (!pno->uc_networks_count ||
183 pno->uc_networks_count > WMI_PNO_MAX_SUPP_NETWORKS)
184 return -EINVAL;
185
186 if (nd_config->n_channels > WMI_PNO_MAX_NETW_CHANNELS_EX)
187 return -EINVAL;
188
189
190 for (i = 0; i < pno->uc_networks_count; i++) {
191 ssid_len = nd_config->match_sets[i].ssid.ssid_len;
192
193 if (ssid_len == 0 || ssid_len > 32)
194 return -EINVAL;
195
196 pno->a_networks[i].ssid.ssid_len = __cpu_to_le32(ssid_len);
197
198 memcpy(pno->a_networks[i].ssid.ssid,
199 nd_config->match_sets[i].ssid.ssid,
200 nd_config->match_sets[i].ssid.ssid_len);
201 pno->a_networks[i].authentication = 0;
202 pno->a_networks[i].encryption = 0;
203 pno->a_networks[i].bcast_nw_type = 0;
204
205
206 pno->a_networks[i].channel_count = nd_config->n_channels;
207 pno->a_networks[i].rssi_threshold = nd_config->match_sets[i].rssi_thold;
208
209 for (j = 0; j < nd_config->n_channels; j++) {
210 pno->a_networks[i].channels[j] =
211 nd_config->channels[j]->center_freq;
212 }
213 }
214
215
216 if (nd_config->n_ssids == 0)
217 pno->do_passive_scan = true;
218 else
219 pno->do_passive_scan = false;
220
221 for (i = 0; i < nd_config->n_ssids; i++) {
222 j = 0;
223 while (j < pno->uc_networks_count) {
224 if (__le32_to_cpu(pno->a_networks[j].ssid.ssid_len) ==
225 nd_config->ssids[i].ssid_len &&
226 (memcmp(pno->a_networks[j].ssid.ssid,
227 nd_config->ssids[i].ssid,
228 __le32_to_cpu(pno->a_networks[j].ssid.ssid_len)) == 0)) {
229 pno->a_networks[j].bcast_nw_type = BCAST_HIDDEN;
230 break;
231 }
232 j++;
233 }
234 }
235
236 if (nd_config->n_scan_plans == 2) {
237 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
238 pno->fast_scan_max_cycles = nd_config->scan_plans[0].iterations;
239 pno->slow_scan_period =
240 nd_config->scan_plans[1].interval * MSEC_PER_SEC;
241 } else if (nd_config->n_scan_plans == 1) {
242 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
243 pno->fast_scan_max_cycles = 1;
244 pno->slow_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
245 } else {
246 ath10k_warn(ar, "Invalid number of scan plans %d !!",
247 nd_config->n_scan_plans);
248 }
249
250 if (nd_config->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
251
252 pno->enable_pno_scan_randomization = 1;
253 memcpy(pno->mac_addr, nd_config->mac_addr, ETH_ALEN);
254 memcpy(pno->mac_addr_mask, nd_config->mac_addr_mask, ETH_ALEN);
255 }
256
257 pno->delay_start_time = nd_config->delay;
258
259
260 pno->active_max_time = WMI_ACTIVE_MAX_CHANNEL_TIME;
261 pno->passive_max_time = WMI_PASSIVE_MAX_CHANNEL_TIME;
262 return ret;
263}
264
265static int ath10k_vif_wow_set_wakeups(struct ath10k_vif *arvif,
266 struct cfg80211_wowlan *wowlan)
267{
268 int ret, i;
269 unsigned long wow_mask = 0;
270 struct ath10k *ar = arvif->ar;
271 const struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
272 int pattern_id = 0;
273
274
275 switch (arvif->vdev_type) {
276 case WMI_VDEV_TYPE_IBSS:
277 __set_bit(WOW_BEACON_EVENT, &wow_mask);
278 fallthrough;
279 case WMI_VDEV_TYPE_AP:
280 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
281 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
282 __set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask);
283 __set_bit(WOW_AUTH_REQ_EVENT, &wow_mask);
284 __set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask);
285 __set_bit(WOW_HTT_EVENT, &wow_mask);
286 __set_bit(WOW_RA_MATCH_EVENT, &wow_mask);
287 break;
288 case WMI_VDEV_TYPE_STA:
289 if (wowlan->disconnect) {
290 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
291 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
292 __set_bit(WOW_BMISS_EVENT, &wow_mask);
293 __set_bit(WOW_CSA_IE_EVENT, &wow_mask);
294 }
295
296 if (wowlan->magic_pkt)
297 __set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask);
298
299 if (wowlan->nd_config) {
300 struct wmi_pno_scan_req *pno;
301 int ret;
302
303 pno = kzalloc(sizeof(*pno), GFP_KERNEL);
304 if (!pno)
305 return -ENOMEM;
306
307 ar->nlo_enabled = true;
308
309 ret = ath10k_wmi_pno_check(ar, arvif->vdev_id,
310 wowlan->nd_config, pno);
311 if (!ret) {
312 ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
313 __set_bit(WOW_NLO_DETECTED_EVENT, &wow_mask);
314 }
315
316 kfree(pno);
317 }
318 break;
319 default:
320 break;
321 }
322
323 for (i = 0; i < wowlan->n_patterns; i++) {
324 u8 bitmask[WOW_MAX_PATTERN_SIZE] = {};
325 u8 ath_pattern[WOW_MAX_PATTERN_SIZE] = {};
326 u8 ath_bitmask[WOW_MAX_PATTERN_SIZE] = {};
327 struct cfg80211_pkt_pattern new_pattern = {};
328 struct cfg80211_pkt_pattern old_pattern = patterns[i];
329 int j;
330
331 new_pattern.pattern = ath_pattern;
332 new_pattern.mask = ath_bitmask;
333 if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE)
334 continue;
335
336 for (j = 0; j < patterns[i].pattern_len; j++)
337 if (patterns[i].mask[j / 8] & BIT(j % 8))
338 bitmask[j] = 0xff;
339 old_pattern.mask = bitmask;
340 new_pattern = old_pattern;
341
342 if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
343 if (patterns[i].pkt_offset < ETH_HLEN)
344 ath10k_wow_convert_8023_to_80211(&new_pattern,
345 &old_pattern);
346 else
347 new_pattern.pkt_offset += WOW_HDR_LEN - ETH_HLEN;
348 }
349
350 if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE))
351 return -EINVAL;
352
353 ret = ath10k_wmi_wow_add_pattern(ar, arvif->vdev_id,
354 pattern_id,
355 new_pattern.pattern,
356 new_pattern.mask,
357 new_pattern.pattern_len,
358 new_pattern.pkt_offset);
359 if (ret) {
360 ath10k_warn(ar, "failed to add pattern %i to vdev %i: %d\n",
361 pattern_id,
362 arvif->vdev_id, ret);
363 return ret;
364 }
365
366 pattern_id++;
367 __set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask);
368 }
369
370 for (i = 0; i < WOW_EVENT_MAX; i++) {
371 if (!test_bit(i, &wow_mask))
372 continue;
373 ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1);
374 if (ret) {
375 ath10k_warn(ar, "failed to enable wakeup event %s on vdev %i: %d\n",
376 wow_wakeup_event(i), arvif->vdev_id, ret);
377 return ret;
378 }
379 }
380
381 return 0;
382}
383
384static int ath10k_wow_set_wakeups(struct ath10k *ar,
385 struct cfg80211_wowlan *wowlan)
386{
387 struct ath10k_vif *arvif;
388 int ret;
389
390 lockdep_assert_held(&ar->conf_mutex);
391
392 list_for_each_entry(arvif, &ar->arvifs, list) {
393 ret = ath10k_vif_wow_set_wakeups(arvif, wowlan);
394 if (ret) {
395 ath10k_warn(ar, "failed to set wow wakeups on vdev %i: %d\n",
396 arvif->vdev_id, ret);
397 return ret;
398 }
399 }
400
401 return 0;
402}
403
404static int ath10k_vif_wow_clean_nlo(struct ath10k_vif *arvif)
405{
406 int ret = 0;
407 struct ath10k *ar = arvif->ar;
408
409 switch (arvif->vdev_type) {
410 case WMI_VDEV_TYPE_STA:
411 if (ar->nlo_enabled) {
412 struct wmi_pno_scan_req *pno;
413
414 pno = kzalloc(sizeof(*pno), GFP_KERNEL);
415 if (!pno)
416 return -ENOMEM;
417
418 pno->enable = 0;
419 ar->nlo_enabled = false;
420 ret = ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
421 kfree(pno);
422 }
423 break;
424 default:
425 break;
426 }
427 return ret;
428}
429
430static int ath10k_wow_nlo_cleanup(struct ath10k *ar)
431{
432 struct ath10k_vif *arvif;
433 int ret = 0;
434
435 lockdep_assert_held(&ar->conf_mutex);
436
437 list_for_each_entry(arvif, &ar->arvifs, list) {
438 ret = ath10k_vif_wow_clean_nlo(arvif);
439 if (ret) {
440 ath10k_warn(ar, "failed to clean nlo settings on vdev %i: %d\n",
441 arvif->vdev_id, ret);
442 return ret;
443 }
444 }
445
446 return 0;
447}
448
449static int ath10k_wow_enable(struct ath10k *ar)
450{
451 int ret;
452
453 lockdep_assert_held(&ar->conf_mutex);
454
455 reinit_completion(&ar->target_suspend);
456
457 ret = ath10k_wmi_wow_enable(ar);
458 if (ret) {
459 ath10k_warn(ar, "failed to issue wow enable: %d\n", ret);
460 return ret;
461 }
462
463 ret = wait_for_completion_timeout(&ar->target_suspend, 3 * HZ);
464 if (ret == 0) {
465 ath10k_warn(ar, "timed out while waiting for suspend completion\n");
466 return -ETIMEDOUT;
467 }
468
469 return 0;
470}
471
472static int ath10k_wow_wakeup(struct ath10k *ar)
473{
474 int ret;
475
476 lockdep_assert_held(&ar->conf_mutex);
477
478 reinit_completion(&ar->wow.wakeup_completed);
479
480 ret = ath10k_wmi_wow_host_wakeup_ind(ar);
481 if (ret) {
482 ath10k_warn(ar, "failed to send wow wakeup indication: %d\n",
483 ret);
484 return ret;
485 }
486
487 ret = wait_for_completion_timeout(&ar->wow.wakeup_completed, 3 * HZ);
488 if (ret == 0) {
489 ath10k_warn(ar, "timed out while waiting for wow wakeup completion\n");
490 return -ETIMEDOUT;
491 }
492
493 return 0;
494}
495
496int ath10k_wow_op_suspend(struct ieee80211_hw *hw,
497 struct cfg80211_wowlan *wowlan)
498{
499 struct ath10k *ar = hw->priv;
500 int ret;
501
502 mutex_lock(&ar->conf_mutex);
503
504 if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
505 ar->running_fw->fw_file.fw_features))) {
506 ret = 1;
507 goto exit;
508 }
509
510 ret = ath10k_wow_cleanup(ar);
511 if (ret) {
512 ath10k_warn(ar, "failed to clear wow wakeup events: %d\n",
513 ret);
514 goto exit;
515 }
516
517 ret = ath10k_wow_set_wakeups(ar, wowlan);
518 if (ret) {
519 ath10k_warn(ar, "failed to set wow wakeup events: %d\n",
520 ret);
521 goto cleanup;
522 }
523
524 ath10k_mac_wait_tx_complete(ar);
525
526 ret = ath10k_wow_enable(ar);
527 if (ret) {
528 ath10k_warn(ar, "failed to start wow: %d\n", ret);
529 goto cleanup;
530 }
531
532 ret = ath10k_hif_suspend(ar);
533 if (ret) {
534 ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
535 goto wakeup;
536 }
537
538 goto exit;
539
540wakeup:
541 ath10k_wow_wakeup(ar);
542
543cleanup:
544 ath10k_wow_cleanup(ar);
545
546exit:
547 mutex_unlock(&ar->conf_mutex);
548 return ret ? 1 : 0;
549}
550
551void ath10k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled)
552{
553 struct ath10k *ar = hw->priv;
554
555 mutex_lock(&ar->conf_mutex);
556 if (test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
557 ar->running_fw->fw_file.fw_features)) {
558 device_set_wakeup_enable(ar->dev, enabled);
559 }
560 mutex_unlock(&ar->conf_mutex);
561}
562
563int ath10k_wow_op_resume(struct ieee80211_hw *hw)
564{
565 struct ath10k *ar = hw->priv;
566 int ret;
567
568 mutex_lock(&ar->conf_mutex);
569
570 if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
571 ar->running_fw->fw_file.fw_features))) {
572 ret = 1;
573 goto exit;
574 }
575
576 ret = ath10k_hif_resume(ar);
577 if (ret) {
578 ath10k_warn(ar, "failed to resume hif: %d\n", ret);
579 goto exit;
580 }
581
582 ret = ath10k_wow_wakeup(ar);
583 if (ret)
584 ath10k_warn(ar, "failed to wakeup from wow: %d\n", ret);
585
586 ret = ath10k_wow_nlo_cleanup(ar);
587 if (ret)
588 ath10k_warn(ar, "failed to cleanup nlo: %d\n", ret);
589
590exit:
591 if (ret) {
592 switch (ar->state) {
593 case ATH10K_STATE_ON:
594 ar->state = ATH10K_STATE_RESTARTING;
595 ret = 1;
596 break;
597 case ATH10K_STATE_OFF:
598 case ATH10K_STATE_RESTARTING:
599 case ATH10K_STATE_RESTARTED:
600 case ATH10K_STATE_UTF:
601 case ATH10K_STATE_WEDGED:
602 ath10k_warn(ar, "encountered unexpected device state %d on resume, cannot recover\n",
603 ar->state);
604 ret = -EIO;
605 break;
606 }
607 }
608
609 mutex_unlock(&ar->conf_mutex);
610 return ret;
611}
612
613int ath10k_wow_init(struct ath10k *ar)
614{
615 if (!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
616 ar->running_fw->fw_file.fw_features))
617 return 0;
618
619 if (WARN_ON(!test_bit(WMI_SERVICE_WOW, ar->wmi.svc_map)))
620 return -EINVAL;
621
622 ar->wow.wowlan_support = ath10k_wowlan_support;
623
624 if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
625 ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE;
626 ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE;
627 }
628
629 if (test_bit(WMI_SERVICE_NLO, ar->wmi.svc_map)) {
630 ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT;
631 ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS;
632 }
633
634 ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
635 ar->hw->wiphy->wowlan = &ar->wow.wowlan_support;
636
637 device_set_wakeup_capable(ar->dev, true);
638
639 return 0;
640}
641
