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1// SPDX-License-Identifier: BSD-3-Clause-Clear
2/*
3 * Copyright (c) 2020 The Linux Foundation. All rights reserved.
4 * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
5 */
6
7#include <linux/delay.h>
8#include <linux/inetdevice.h>
9#include <net/addrconf.h>
10#include <net/if_inet6.h>
11#include <net/ipv6.h>
12
13#include "mac.h"
14
15#include <net/mac80211.h>
16#include "core.h"
17#include "hif.h"
18#include "debug.h"
19#include "wmi.h"
20#include "wow.h"
21
22static const struct wiphy_wowlan_support ath12k_wowlan_support = {
23 .flags = WIPHY_WOWLAN_DISCONNECT |
24 WIPHY_WOWLAN_MAGIC_PKT |
25 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
26 WIPHY_WOWLAN_GTK_REKEY_FAILURE,
27 .pattern_min_len = WOW_MIN_PATTERN_SIZE,
28 .pattern_max_len = WOW_MAX_PATTERN_SIZE,
29 .max_pkt_offset = WOW_MAX_PKT_OFFSET,
30};
31
32static inline bool ath12k_wow_is_p2p_vdev(struct ath12k_vif *ahvif)
33{
34 return (ahvif->vdev_subtype == WMI_VDEV_SUBTYPE_P2P_DEVICE ||
35 ahvif->vdev_subtype == WMI_VDEV_SUBTYPE_P2P_CLIENT ||
36 ahvif->vdev_subtype == WMI_VDEV_SUBTYPE_P2P_GO);
37}
38
39int ath12k_wow_enable(struct ath12k *ar)
40{
41 struct ath12k_base *ab = ar->ab;
42 int i, ret;
43
44 clear_bit(ATH12K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags);
45
46 /* The firmware might be busy and it can not enter WoW immediately.
47 * In that case firmware notifies host with
48 * ATH12K_HTC_MSG_NACK_SUSPEND message, asking host to try again
49 * later. Per the firmware team there could be up to 10 loops.
50 */
51 for (i = 0; i < ATH12K_WOW_RETRY_NUM; i++) {
52 reinit_completion(&ab->htc_suspend);
53
54 ret = ath12k_wmi_wow_enable(ar);
55 if (ret) {
56 ath12k_warn(ab, "failed to issue wow enable: %d\n", ret);
57 return ret;
58 }
59
60 ret = wait_for_completion_timeout(&ab->htc_suspend, 3 * HZ);
61 if (ret == 0) {
62 ath12k_warn(ab,
63 "timed out while waiting for htc suspend completion\n");
64 return -ETIMEDOUT;
65 }
66
67 if (test_bit(ATH12K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags))
68 /* success, suspend complete received */
69 return 0;
70
71 ath12k_warn(ab, "htc suspend not complete, retrying (try %d)\n",
72 i);
73 msleep(ATH12K_WOW_RETRY_WAIT_MS);
74 }
75
76 ath12k_warn(ab, "htc suspend not complete, failing after %d tries\n", i);
77
78 return -ETIMEDOUT;
79}
80
81int ath12k_wow_wakeup(struct ath12k *ar)
82{
83 struct ath12k_base *ab = ar->ab;
84 int ret;
85
86 reinit_completion(&ab->wow.wakeup_completed);
87
88 ret = ath12k_wmi_wow_host_wakeup_ind(ar);
89 if (ret) {
90 ath12k_warn(ab, "failed to send wow wakeup indication: %d\n",
91 ret);
92 return ret;
93 }
94
95 ret = wait_for_completion_timeout(&ab->wow.wakeup_completed, 3 * HZ);
96 if (ret == 0) {
97 ath12k_warn(ab, "timed out while waiting for wow wakeup completion\n");
98 return -ETIMEDOUT;
99 }
100
101 return 0;
102}
103
104static int ath12k_wow_vif_cleanup(struct ath12k_link_vif *arvif)
105{
106 struct ath12k *ar = arvif->ar;
107 int i, ret;
108
109 for (i = 0; i < WOW_EVENT_MAX; i++) {
110 ret = ath12k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0);
111 if (ret) {
112 ath12k_warn(ar->ab, "failed to issue wow wakeup for event %s on vdev %i: %d\n",
113 wow_wakeup_event(i), arvif->vdev_id, ret);
114 return ret;
115 }
116 }
117
118 for (i = 0; i < ar->wow.max_num_patterns; i++) {
119 ret = ath12k_wmi_wow_del_pattern(ar, arvif->vdev_id, i);
120 if (ret) {
121 ath12k_warn(ar->ab, "failed to delete wow pattern %d for vdev %i: %d\n",
122 i, arvif->vdev_id, ret);
123 return ret;
124 }
125 }
126
127 return 0;
128}
129
130static int ath12k_wow_cleanup(struct ath12k *ar)
131{
132 struct ath12k_link_vif *arvif;
133 int ret;
134
135 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
136
137 list_for_each_entry(arvif, &ar->arvifs, list) {
138 ret = ath12k_wow_vif_cleanup(arvif);
139 if (ret) {
140 ath12k_warn(ar->ab, "failed to clean wow wakeups on vdev %i: %d\n",
141 arvif->vdev_id, ret);
142 return ret;
143 }
144 }
145
146 return 0;
147}
148
149/* Convert a 802.3 format to a 802.11 format.
150 * +------------+-----------+--------+----------------+
151 * 802.3: |dest mac(6B)|src mac(6B)|type(2B)| body... |
152 * +------------+-----------+--------+----------------+
153 * |__ |_______ |____________ |________
154 * | | | |
155 * +--+------------+----+-----------+---------------+-----------+
156 * 802.11: |4B|dest mac(6B)| 6B |src mac(6B)| 8B |type(2B)| body... |
157 * +--+------------+----+-----------+---------------+-----------+
158 */
159static void
160ath12k_wow_convert_8023_to_80211(struct ath12k *ar,
161 const struct cfg80211_pkt_pattern *eth_pattern,
162 struct ath12k_pkt_pattern *i80211_pattern)
163{
164 size_t r1042_eth_ofs = offsetof(struct rfc1042_hdr, eth_type);
165 size_t a1_ofs = offsetof(struct ieee80211_hdr_3addr, addr1);
166 size_t a3_ofs = offsetof(struct ieee80211_hdr_3addr, addr3);
167 size_t i80211_hdr_len = sizeof(struct ieee80211_hdr_3addr);
168 size_t prot_ofs = offsetof(struct ethhdr, h_proto);
169 size_t src_ofs = offsetof(struct ethhdr, h_source);
170 u8 eth_bytemask[WOW_MAX_PATTERN_SIZE] = {};
171 const u8 *eth_pat = eth_pattern->pattern;
172 size_t eth_pat_len = eth_pattern->pattern_len;
173 size_t eth_pkt_ofs = eth_pattern->pkt_offset;
174 u8 *bytemask = i80211_pattern->bytemask;
175 u8 *pat = i80211_pattern->pattern;
176 size_t pat_len = 0;
177 size_t pkt_ofs = 0;
178 size_t delta;
179 int i;
180
181 /* convert bitmask to bytemask */
182 for (i = 0; i < eth_pat_len; i++)
183 if (eth_pattern->mask[i / 8] & BIT(i % 8))
184 eth_bytemask[i] = 0xff;
185
186 if (eth_pkt_ofs < ETH_ALEN) {
187 pkt_ofs = eth_pkt_ofs + a1_ofs;
188
189 if (size_add(eth_pkt_ofs, eth_pat_len) < ETH_ALEN) {
190 memcpy(pat, eth_pat, eth_pat_len);
191 memcpy(bytemask, eth_bytemask, eth_pat_len);
192
193 pat_len = eth_pat_len;
194 } else if (size_add(eth_pkt_ofs, eth_pat_len) < prot_ofs) {
195 memcpy(pat, eth_pat, ETH_ALEN - eth_pkt_ofs);
196 memcpy(bytemask, eth_bytemask, ETH_ALEN - eth_pkt_ofs);
197
198 delta = eth_pkt_ofs + eth_pat_len - src_ofs;
199 memcpy(pat + a3_ofs - pkt_ofs,
200 eth_pat + ETH_ALEN - eth_pkt_ofs,
201 delta);
202 memcpy(bytemask + a3_ofs - pkt_ofs,
203 eth_bytemask + ETH_ALEN - eth_pkt_ofs,
204 delta);
205
206 pat_len = a3_ofs - pkt_ofs + delta;
207 } else {
208 memcpy(pat, eth_pat, ETH_ALEN - eth_pkt_ofs);
209 memcpy(bytemask, eth_bytemask, ETH_ALEN - eth_pkt_ofs);
210
211 memcpy(pat + a3_ofs - pkt_ofs,
212 eth_pat + ETH_ALEN - eth_pkt_ofs,
213 ETH_ALEN);
214 memcpy(bytemask + a3_ofs - pkt_ofs,
215 eth_bytemask + ETH_ALEN - eth_pkt_ofs,
216 ETH_ALEN);
217
218 delta = eth_pkt_ofs + eth_pat_len - prot_ofs;
219 memcpy(pat + i80211_hdr_len + r1042_eth_ofs - pkt_ofs,
220 eth_pat + prot_ofs - eth_pkt_ofs,
221 delta);
222 memcpy(bytemask + i80211_hdr_len + r1042_eth_ofs - pkt_ofs,
223 eth_bytemask + prot_ofs - eth_pkt_ofs,
224 delta);
225
226 pat_len = i80211_hdr_len + r1042_eth_ofs - pkt_ofs + delta;
227 }
228 } else if (eth_pkt_ofs < prot_ofs) {
229 pkt_ofs = eth_pkt_ofs - ETH_ALEN + a3_ofs;
230
231 if (size_add(eth_pkt_ofs, eth_pat_len) < prot_ofs) {
232 memcpy(pat, eth_pat, eth_pat_len);
233 memcpy(bytemask, eth_bytemask, eth_pat_len);
234
235 pat_len = eth_pat_len;
236 } else {
237 memcpy(pat, eth_pat, prot_ofs - eth_pkt_ofs);
238 memcpy(bytemask, eth_bytemask, prot_ofs - eth_pkt_ofs);
239
240 delta = eth_pkt_ofs + eth_pat_len - prot_ofs;
241 memcpy(pat + i80211_hdr_len + r1042_eth_ofs - pkt_ofs,
242 eth_pat + prot_ofs - eth_pkt_ofs,
243 delta);
244 memcpy(bytemask + i80211_hdr_len + r1042_eth_ofs - pkt_ofs,
245 eth_bytemask + prot_ofs - eth_pkt_ofs,
246 delta);
247
248 pat_len = i80211_hdr_len + r1042_eth_ofs - pkt_ofs + delta;
249 }
250 } else {
251 pkt_ofs = eth_pkt_ofs - prot_ofs + i80211_hdr_len + r1042_eth_ofs;
252
253 memcpy(pat, eth_pat, eth_pat_len);
254 memcpy(bytemask, eth_bytemask, eth_pat_len);
255
256 pat_len = eth_pat_len;
257 }
258
259 i80211_pattern->pattern_len = pat_len;
260 i80211_pattern->pkt_offset = pkt_ofs;
261}
262
263static int
264ath12k_wow_pno_check_and_convert(struct ath12k *ar, u32 vdev_id,
265 const struct cfg80211_sched_scan_request *nd_config,
266 struct wmi_pno_scan_req_arg *pno)
267{
268 int i, j;
269 u8 ssid_len;
270
271 pno->enable = 1;
272 pno->vdev_id = vdev_id;
273 pno->uc_networks_count = nd_config->n_match_sets;
274
275 if (!pno->uc_networks_count ||
276 pno->uc_networks_count > WMI_PNO_MAX_SUPP_NETWORKS)
277 return -EINVAL;
278
279 if (nd_config->n_channels > WMI_PNO_MAX_NETW_CHANNELS_EX)
280 return -EINVAL;
281
282 /* Filling per profile params */
283 for (i = 0; i < pno->uc_networks_count; i++) {
284 ssid_len = nd_config->match_sets[i].ssid.ssid_len;
285
286 if (ssid_len == 0 || ssid_len > 32)
287 return -EINVAL;
288
289 pno->a_networks[i].ssid.ssid_len = ssid_len;
290
291 memcpy(pno->a_networks[i].ssid.ssid,
292 nd_config->match_sets[i].ssid.ssid,
293 ssid_len);
294 pno->a_networks[i].authentication = 0;
295 pno->a_networks[i].encryption = 0;
296 pno->a_networks[i].bcast_nw_type = 0;
297
298 /* Copying list of valid channel into request */
299 pno->a_networks[i].channel_count = nd_config->n_channels;
300 pno->a_networks[i].rssi_threshold = nd_config->match_sets[i].rssi_thold;
301
302 for (j = 0; j < nd_config->n_channels; j++) {
303 pno->a_networks[i].channels[j] =
304 nd_config->channels[j]->center_freq;
305 }
306 }
307
308 /* set scan to passive if no SSIDs are specified in the request */
309 if (nd_config->n_ssids == 0)
310 pno->do_passive_scan = true;
311 else
312 pno->do_passive_scan = false;
313
314 for (i = 0; i < nd_config->n_ssids; i++) {
315 for (j = 0; j < pno->uc_networks_count; j++) {
316 if (pno->a_networks[j].ssid.ssid_len ==
317 nd_config->ssids[i].ssid_len &&
318 !memcmp(pno->a_networks[j].ssid.ssid,
319 nd_config->ssids[i].ssid,
320 pno->a_networks[j].ssid.ssid_len)) {
321 pno->a_networks[j].bcast_nw_type = BCAST_HIDDEN;
322 break;
323 }
324 }
325 }
326
327 if (nd_config->n_scan_plans == 2) {
328 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
329 pno->fast_scan_max_cycles = nd_config->scan_plans[0].iterations;
330 pno->slow_scan_period =
331 nd_config->scan_plans[1].interval * MSEC_PER_SEC;
332 } else if (nd_config->n_scan_plans == 1) {
333 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
334 pno->fast_scan_max_cycles = 1;
335 pno->slow_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
336 } else {
337 ath12k_warn(ar->ab, "Invalid number of PNO scan plans: %d",
338 nd_config->n_scan_plans);
339 }
340
341 if (nd_config->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
342 /* enable mac randomization */
343 pno->enable_pno_scan_randomization = 1;
344 memcpy(pno->mac_addr, nd_config->mac_addr, ETH_ALEN);
345 memcpy(pno->mac_addr_mask, nd_config->mac_addr_mask, ETH_ALEN);
346 }
347
348 pno->delay_start_time = nd_config->delay;
349
350 /* Current FW does not support min-max range for dwell time */
351 pno->active_max_time = WMI_ACTIVE_MAX_CHANNEL_TIME;
352 pno->passive_max_time = WMI_PASSIVE_MAX_CHANNEL_TIME;
353
354 return 0;
355}
356
357static int ath12k_wow_vif_set_wakeups(struct ath12k_link_vif *arvif,
358 struct cfg80211_wowlan *wowlan)
359{
360 const struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
361 struct ath12k *ar = arvif->ar;
362 unsigned long wow_mask = 0;
363 int pattern_id = 0;
364 int ret, i, j;
365
366 /* Setup requested WOW features */
367 switch (arvif->ahvif->vdev_type) {
368 case WMI_VDEV_TYPE_IBSS:
369 __set_bit(WOW_BEACON_EVENT, &wow_mask);
370 fallthrough;
371 case WMI_VDEV_TYPE_AP:
372 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
373 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
374 __set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask);
375 __set_bit(WOW_AUTH_REQ_EVENT, &wow_mask);
376 __set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask);
377 __set_bit(WOW_HTT_EVENT, &wow_mask);
378 __set_bit(WOW_RA_MATCH_EVENT, &wow_mask);
379 break;
380 case WMI_VDEV_TYPE_STA:
381 if (wowlan->disconnect) {
382 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
383 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
384 __set_bit(WOW_BMISS_EVENT, &wow_mask);
385 __set_bit(WOW_CSA_IE_EVENT, &wow_mask);
386 }
387
388 if (wowlan->magic_pkt)
389 __set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask);
390
391 if (wowlan->nd_config) {
392 struct wmi_pno_scan_req_arg *pno;
393 int ret;
394
395 pno = kzalloc(sizeof(*pno), GFP_KERNEL);
396 if (!pno)
397 return -ENOMEM;
398
399 ar->nlo_enabled = true;
400
401 ret = ath12k_wow_pno_check_and_convert(ar, arvif->vdev_id,
402 wowlan->nd_config, pno);
403 if (!ret) {
404 ath12k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
405 __set_bit(WOW_NLO_DETECTED_EVENT, &wow_mask);
406 }
407
408 kfree(pno);
409 }
410 break;
411 default:
412 break;
413 }
414
415 for (i = 0; i < wowlan->n_patterns; i++) {
416 const struct cfg80211_pkt_pattern *eth_pattern = &patterns[i];
417 struct ath12k_pkt_pattern new_pattern = {};
418
419 if (WARN_ON(eth_pattern->pattern_len > WOW_MAX_PATTERN_SIZE))
420 return -EINVAL;
421
422 if (ar->ab->wow.wmi_conf_rx_decap_mode ==
423 ATH12K_HW_TXRX_NATIVE_WIFI) {
424 ath12k_wow_convert_8023_to_80211(ar, eth_pattern,
425 &new_pattern);
426
427 if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE))
428 return -EINVAL;
429 } else {
430 memcpy(new_pattern.pattern, eth_pattern->pattern,
431 eth_pattern->pattern_len);
432
433 /* convert bitmask to bytemask */
434 for (j = 0; j < eth_pattern->pattern_len; j++)
435 if (eth_pattern->mask[j / 8] & BIT(j % 8))
436 new_pattern.bytemask[j] = 0xff;
437
438 new_pattern.pattern_len = eth_pattern->pattern_len;
439 new_pattern.pkt_offset = eth_pattern->pkt_offset;
440 }
441
442 ret = ath12k_wmi_wow_add_pattern(ar, arvif->vdev_id,
443 pattern_id,
444 new_pattern.pattern,
445 new_pattern.bytemask,
446 new_pattern.pattern_len,
447 new_pattern.pkt_offset);
448 if (ret) {
449 ath12k_warn(ar->ab, "failed to add pattern %i to vdev %i: %d\n",
450 pattern_id,
451 arvif->vdev_id, ret);
452 return ret;
453 }
454
455 pattern_id++;
456 __set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask);
457 }
458
459 for (i = 0; i < WOW_EVENT_MAX; i++) {
460 if (!test_bit(i, &wow_mask))
461 continue;
462 ret = ath12k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1);
463 if (ret) {
464 ath12k_warn(ar->ab, "failed to enable wakeup event %s on vdev %i: %d\n",
465 wow_wakeup_event(i), arvif->vdev_id, ret);
466 return ret;
467 }
468 }
469
470 return 0;
471}
472
473static int ath12k_wow_set_wakeups(struct ath12k *ar,
474 struct cfg80211_wowlan *wowlan)
475{
476 struct ath12k_link_vif *arvif;
477 int ret;
478
479 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
480
481 list_for_each_entry(arvif, &ar->arvifs, list) {
482 if (ath12k_wow_is_p2p_vdev(arvif->ahvif))
483 continue;
484 ret = ath12k_wow_vif_set_wakeups(arvif, wowlan);
485 if (ret) {
486 ath12k_warn(ar->ab, "failed to set wow wakeups on vdev %i: %d\n",
487 arvif->vdev_id, ret);
488 return ret;
489 }
490 }
491
492 return 0;
493}
494
495static int ath12k_wow_vdev_clean_nlo(struct ath12k *ar, u32 vdev_id)
496{
497 struct wmi_pno_scan_req_arg *pno;
498 int ret;
499
500 if (!ar->nlo_enabled)
501 return 0;
502
503 pno = kzalloc(sizeof(*pno), GFP_KERNEL);
504 if (!pno)
505 return -ENOMEM;
506
507 pno->enable = 0;
508 ret = ath12k_wmi_wow_config_pno(ar, vdev_id, pno);
509 if (ret) {
510 ath12k_warn(ar->ab, "failed to disable PNO: %d", ret);
511 goto out;
512 }
513
514 ar->nlo_enabled = false;
515
516out:
517 kfree(pno);
518 return ret;
519}
520
521static int ath12k_wow_vif_clean_nlo(struct ath12k_link_vif *arvif)
522{
523 struct ath12k *ar = arvif->ar;
524
525 switch (arvif->ahvif->vdev_type) {
526 case WMI_VDEV_TYPE_STA:
527 return ath12k_wow_vdev_clean_nlo(ar, arvif->vdev_id);
528 default:
529 return 0;
530 }
531}
532
533static int ath12k_wow_nlo_cleanup(struct ath12k *ar)
534{
535 struct ath12k_link_vif *arvif;
536 int ret;
537
538 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
539
540 list_for_each_entry(arvif, &ar->arvifs, list) {
541 if (ath12k_wow_is_p2p_vdev(arvif->ahvif))
542 continue;
543
544 ret = ath12k_wow_vif_clean_nlo(arvif);
545 if (ret) {
546 ath12k_warn(ar->ab, "failed to clean nlo settings on vdev %i: %d\n",
547 arvif->vdev_id, ret);
548 return ret;
549 }
550 }
551
552 return 0;
553}
554
555static int ath12k_wow_set_hw_filter(struct ath12k *ar)
556{
557 struct wmi_hw_data_filter_arg arg;
558 struct ath12k_link_vif *arvif;
559 int ret;
560
561 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
562
563 list_for_each_entry(arvif, &ar->arvifs, list) {
564 if (arvif->ahvif->vdev_type != WMI_VDEV_TYPE_STA)
565 continue;
566
567 arg.vdev_id = arvif->vdev_id;
568 arg.enable = true;
569 arg.hw_filter_bitmap = WMI_HW_DATA_FILTER_DROP_NON_ICMPV6_MC;
570 ret = ath12k_wmi_hw_data_filter_cmd(ar, &arg);
571 if (ret) {
572 ath12k_warn(ar->ab, "failed to set hw data filter on vdev %i: %d\n",
573 arvif->vdev_id, ret);
574 return ret;
575 }
576 }
577
578 return 0;
579}
580
581static int ath12k_wow_clear_hw_filter(struct ath12k *ar)
582{
583 struct wmi_hw_data_filter_arg arg;
584 struct ath12k_link_vif *arvif;
585 int ret;
586
587 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
588
589 list_for_each_entry(arvif, &ar->arvifs, list) {
590 if (arvif->ahvif->vdev_type != WMI_VDEV_TYPE_STA)
591 continue;
592
593 arg.vdev_id = arvif->vdev_id;
594 arg.enable = false;
595 arg.hw_filter_bitmap = 0;
596 ret = ath12k_wmi_hw_data_filter_cmd(ar, &arg);
597
598 if (ret) {
599 ath12k_warn(ar->ab, "failed to clear hw data filter on vdev %i: %d\n",
600 arvif->vdev_id, ret);
601 return ret;
602 }
603 }
604
605 return 0;
606}
607
608static void ath12k_wow_generate_ns_mc_addr(struct ath12k_base *ab,
609 struct wmi_arp_ns_offload_arg *offload)
610{
611 int i;
612
613 for (i = 0; i < offload->ipv6_count; i++) {
614 offload->self_ipv6_addr[i][0] = 0xff;
615 offload->self_ipv6_addr[i][1] = 0x02;
616 offload->self_ipv6_addr[i][11] = 0x01;
617 offload->self_ipv6_addr[i][12] = 0xff;
618 offload->self_ipv6_addr[i][13] =
619 offload->ipv6_addr[i][13];
620 offload->self_ipv6_addr[i][14] =
621 offload->ipv6_addr[i][14];
622 offload->self_ipv6_addr[i][15] =
623 offload->ipv6_addr[i][15];
624 ath12k_dbg(ab, ATH12K_DBG_WOW, "NS solicited addr %pI6\n",
625 offload->self_ipv6_addr[i]);
626 }
627}
628
629static void ath12k_wow_prepare_ns_offload(struct ath12k_link_vif *arvif,
630 struct wmi_arp_ns_offload_arg *offload)
631{
632 struct net_device *ndev = ieee80211_vif_to_wdev(arvif->ahvif->vif)->netdev;
633 struct ath12k_base *ab = arvif->ar->ab;
634 struct inet6_ifaddr *ifa6;
635 struct ifacaddr6 *ifaca6;
636 struct inet6_dev *idev;
637 u32 count = 0, scope;
638
639 if (!ndev)
640 return;
641
642 idev = in6_dev_get(ndev);
643 if (!idev)
644 return;
645
646 ath12k_dbg(ab, ATH12K_DBG_WOW, "wow prepare ns offload\n");
647
648 read_lock_bh(&idev->lock);
649
650 /* get unicast address */
651 list_for_each_entry(ifa6, &idev->addr_list, if_list) {
652 if (count >= WMI_IPV6_MAX_COUNT)
653 goto unlock;
654
655 if (ifa6->flags & IFA_F_DADFAILED)
656 continue;
657
658 scope = ipv6_addr_src_scope(&ifa6->addr);
659 if (scope != IPV6_ADDR_SCOPE_LINKLOCAL &&
660 scope != IPV6_ADDR_SCOPE_GLOBAL) {
661 ath12k_dbg(ab, ATH12K_DBG_WOW,
662 "Unsupported ipv6 scope: %d\n", scope);
663 continue;
664 }
665
666 memcpy(offload->ipv6_addr[count], &ifa6->addr.s6_addr,
667 sizeof(ifa6->addr.s6_addr));
668 offload->ipv6_type[count] = WMI_IPV6_UC_TYPE;
669 ath12k_dbg(ab, ATH12K_DBG_WOW, "mac count %d ipv6 uc %pI6 scope %d\n",
670 count, offload->ipv6_addr[count],
671 scope);
672 count++;
673 }
674
675 /* get anycast address */
676 rcu_read_lock();
677
678 for (ifaca6 = rcu_dereference(idev->ac_list); ifaca6;
679 ifaca6 = rcu_dereference(ifaca6->aca_next)) {
680 if (count >= WMI_IPV6_MAX_COUNT) {
681 rcu_read_unlock();
682 goto unlock;
683 }
684
685 scope = ipv6_addr_src_scope(&ifaca6->aca_addr);
686 if (scope != IPV6_ADDR_SCOPE_LINKLOCAL &&
687 scope != IPV6_ADDR_SCOPE_GLOBAL) {
688 ath12k_dbg(ab, ATH12K_DBG_WOW,
689 "Unsupported ipv scope: %d\n", scope);
690 continue;
691 }
692
693 memcpy(offload->ipv6_addr[count], &ifaca6->aca_addr,
694 sizeof(ifaca6->aca_addr));
695 offload->ipv6_type[count] = WMI_IPV6_AC_TYPE;
696 ath12k_dbg(ab, ATH12K_DBG_WOW, "mac count %d ipv6 ac %pI6 scope %d\n",
697 count, offload->ipv6_addr[count],
698 scope);
699 count++;
700 }
701
702 rcu_read_unlock();
703
704unlock:
705 read_unlock_bh(&idev->lock);
706
707 in6_dev_put(idev);
708
709 offload->ipv6_count = count;
710 ath12k_wow_generate_ns_mc_addr(ab, offload);
711}
712
713static void ath12k_wow_prepare_arp_offload(struct ath12k_link_vif *arvif,
714 struct wmi_arp_ns_offload_arg *offload)
715{
716 struct ieee80211_vif *vif = arvif->ahvif->vif;
717 struct ieee80211_vif_cfg vif_cfg = vif->cfg;
718 struct ath12k_base *ab = arvif->ar->ab;
719 u32 ipv4_cnt;
720
721 ath12k_dbg(ab, ATH12K_DBG_WOW, "wow prepare arp offload\n");
722
723 ipv4_cnt = min(vif_cfg.arp_addr_cnt, WMI_IPV4_MAX_COUNT);
724 memcpy(offload->ipv4_addr, vif_cfg.arp_addr_list, ipv4_cnt * sizeof(u32));
725 offload->ipv4_count = ipv4_cnt;
726
727 ath12k_dbg(ab, ATH12K_DBG_WOW,
728 "wow arp_addr_cnt %d vif->addr %pM, offload_addr %pI4\n",
729 vif_cfg.arp_addr_cnt, vif->addr, offload->ipv4_addr);
730}
731
732static int ath12k_wow_arp_ns_offload(struct ath12k *ar, bool enable)
733{
734 struct wmi_arp_ns_offload_arg *offload;
735 struct ath12k_link_vif *arvif;
736 struct ath12k_vif *ahvif;
737 int ret;
738
739 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
740
741 offload = kmalloc(sizeof(*offload), GFP_KERNEL);
742 if (!offload)
743 return -ENOMEM;
744
745 list_for_each_entry(arvif, &ar->arvifs, list) {
746 ahvif = arvif->ahvif;
747
748 if (ahvif->vdev_type != WMI_VDEV_TYPE_STA)
749 continue;
750
751 memset(offload, 0, sizeof(*offload));
752
753 memcpy(offload->mac_addr, ahvif->vif->addr, ETH_ALEN);
754 ath12k_wow_prepare_ns_offload(arvif, offload);
755 ath12k_wow_prepare_arp_offload(arvif, offload);
756
757 ret = ath12k_wmi_arp_ns_offload(ar, arvif, offload, enable);
758 if (ret) {
759 ath12k_warn(ar->ab, "failed to set arp ns offload vdev %i: enable %d, ret %d\n",
760 arvif->vdev_id, enable, ret);
761 return ret;
762 }
763 }
764
765 kfree(offload);
766
767 return 0;
768}
769
770static int ath12k_gtk_rekey_offload(struct ath12k *ar, bool enable)
771{
772 struct ath12k_link_vif *arvif;
773 int ret;
774
775 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
776
777 list_for_each_entry(arvif, &ar->arvifs, list) {
778 if (arvif->ahvif->vdev_type != WMI_VDEV_TYPE_STA ||
779 !arvif->is_up ||
780 !arvif->rekey_data.enable_offload)
781 continue;
782
783 /* get rekey info before disable rekey offload */
784 if (!enable) {
785 ret = ath12k_wmi_gtk_rekey_getinfo(ar, arvif);
786 if (ret) {
787 ath12k_warn(ar->ab, "failed to request rekey info vdev %i, ret %d\n",
788 arvif->vdev_id, ret);
789 return ret;
790 }
791 }
792
793 ret = ath12k_wmi_gtk_rekey_offload(ar, arvif, enable);
794
795 if (ret) {
796 ath12k_warn(ar->ab, "failed to offload gtk reky vdev %i: enable %d, ret %d\n",
797 arvif->vdev_id, enable, ret);
798 return ret;
799 }
800 }
801
802 return 0;
803}
804
805static int ath12k_wow_protocol_offload(struct ath12k *ar, bool enable)
806{
807 int ret;
808
809 ret = ath12k_wow_arp_ns_offload(ar, enable);
810 if (ret) {
811 ath12k_warn(ar->ab, "failed to offload ARP and NS %d %d\n",
812 enable, ret);
813 return ret;
814 }
815
816 ret = ath12k_gtk_rekey_offload(ar, enable);
817 if (ret) {
818 ath12k_warn(ar->ab, "failed to offload gtk rekey %d %d\n",
819 enable, ret);
820 return ret;
821 }
822
823 return 0;
824}
825
826static int ath12k_wow_set_keepalive(struct ath12k *ar,
827 enum wmi_sta_keepalive_method method,
828 u32 interval)
829{
830 struct ath12k_link_vif *arvif;
831 int ret;
832
833 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
834
835 list_for_each_entry(arvif, &ar->arvifs, list) {
836 ret = ath12k_mac_vif_set_keepalive(arvif, method, interval);
837 if (ret)
838 return ret;
839 }
840
841 return 0;
842}
843
844int ath12k_wow_op_suspend(struct ieee80211_hw *hw,
845 struct cfg80211_wowlan *wowlan)
846{
847 struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
848 struct ath12k *ar = ath12k_ah_to_ar(ah, 0);
849 int ret;
850
851 lockdep_assert_wiphy(hw->wiphy);
852
853 ret = ath12k_wow_cleanup(ar);
854 if (ret) {
855 ath12k_warn(ar->ab, "failed to clear wow wakeup events: %d\n",
856 ret);
857 goto exit;
858 }
859
860 ret = ath12k_wow_set_wakeups(ar, wowlan);
861 if (ret) {
862 ath12k_warn(ar->ab, "failed to set wow wakeup events: %d\n",
863 ret);
864 goto cleanup;
865 }
866
867 ret = ath12k_wow_protocol_offload(ar, true);
868 if (ret) {
869 ath12k_warn(ar->ab, "failed to set wow protocol offload events: %d\n",
870 ret);
871 goto cleanup;
872 }
873
874 ret = ath12k_mac_wait_tx_complete(ar);
875 if (ret) {
876 ath12k_warn(ar->ab, "failed to wait tx complete: %d\n", ret);
877 goto cleanup;
878 }
879
880 ret = ath12k_wow_set_hw_filter(ar);
881 if (ret) {
882 ath12k_warn(ar->ab, "failed to set hw filter: %d\n",
883 ret);
884 goto cleanup;
885 }
886
887 ret = ath12k_wow_set_keepalive(ar,
888 WMI_STA_KEEPALIVE_METHOD_NULL_FRAME,
889 WMI_STA_KEEPALIVE_INTERVAL_DEFAULT);
890 if (ret) {
891 ath12k_warn(ar->ab, "failed to enable wow keepalive: %d\n", ret);
892 goto cleanup;
893 }
894
895 ret = ath12k_wow_enable(ar);
896 if (ret) {
897 ath12k_warn(ar->ab, "failed to start wow: %d\n", ret);
898 goto cleanup;
899 }
900
901 ath12k_hif_irq_disable(ar->ab);
902 ath12k_hif_ce_irq_disable(ar->ab);
903
904 ret = ath12k_hif_suspend(ar->ab);
905 if (ret) {
906 ath12k_warn(ar->ab, "failed to suspend hif: %d\n", ret);
907 goto wakeup;
908 }
909
910 goto exit;
911
912wakeup:
913 ath12k_wow_wakeup(ar);
914
915cleanup:
916 ath12k_wow_cleanup(ar);
917
918exit:
919 return ret ? 1 : 0;
920}
921
922void ath12k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled)
923{
924 struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
925 struct ath12k *ar = ath12k_ah_to_ar(ah, 0);
926
927 lockdep_assert_wiphy(hw->wiphy);
928
929 device_set_wakeup_enable(ar->ab->dev, enabled);
930}
931
932int ath12k_wow_op_resume(struct ieee80211_hw *hw)
933{
934 struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
935 struct ath12k *ar = ath12k_ah_to_ar(ah, 0);
936 int ret;
937
938 lockdep_assert_wiphy(hw->wiphy);
939
940 ret = ath12k_hif_resume(ar->ab);
941 if (ret) {
942 ath12k_warn(ar->ab, "failed to resume hif: %d\n", ret);
943 goto exit;
944 }
945
946 ath12k_hif_ce_irq_enable(ar->ab);
947 ath12k_hif_irq_enable(ar->ab);
948
949 ret = ath12k_wow_wakeup(ar);
950 if (ret) {
951 ath12k_warn(ar->ab, "failed to wakeup from wow: %d\n", ret);
952 goto exit;
953 }
954
955 ret = ath12k_wow_nlo_cleanup(ar);
956 if (ret) {
957 ath12k_warn(ar->ab, "failed to cleanup nlo: %d\n", ret);
958 goto exit;
959 }
960
961 ret = ath12k_wow_clear_hw_filter(ar);
962 if (ret) {
963 ath12k_warn(ar->ab, "failed to clear hw filter: %d\n", ret);
964 goto exit;
965 }
966
967 ret = ath12k_wow_protocol_offload(ar, false);
968 if (ret) {
969 ath12k_warn(ar->ab, "failed to clear wow protocol offload events: %d\n",
970 ret);
971 goto exit;
972 }
973
974 ret = ath12k_wow_set_keepalive(ar,
975 WMI_STA_KEEPALIVE_METHOD_NULL_FRAME,
976 WMI_STA_KEEPALIVE_INTERVAL_DISABLE);
977 if (ret) {
978 ath12k_warn(ar->ab, "failed to disable wow keepalive: %d\n", ret);
979 goto exit;
980 }
981
982exit:
983 if (ret) {
984 switch (ah->state) {
985 case ATH12K_HW_STATE_ON:
986 ah->state = ATH12K_HW_STATE_RESTARTING;
987 ret = 1;
988 break;
989 case ATH12K_HW_STATE_OFF:
990 case ATH12K_HW_STATE_RESTARTING:
991 case ATH12K_HW_STATE_RESTARTED:
992 case ATH12K_HW_STATE_WEDGED:
993 ath12k_warn(ar->ab, "encountered unexpected device state %d on resume, cannot recover\n",
994 ah->state);
995 ret = -EIO;
996 break;
997 }
998 }
999
1000 return ret;
1001}
1002
1003int ath12k_wow_init(struct ath12k *ar)
1004{
1005 if (!test_bit(WMI_TLV_SERVICE_WOW, ar->wmi->wmi_ab->svc_map))
1006 return 0;
1007
1008 ar->wow.wowlan_support = ath12k_wowlan_support;
1009
1010 if (ar->ab->wow.wmi_conf_rx_decap_mode == ATH12K_HW_TXRX_NATIVE_WIFI) {
1011 ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE;
1012 ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE;
1013 }
1014
1015 if (test_bit(WMI_TLV_SERVICE_NLO, ar->wmi->wmi_ab->svc_map)) {
1016 ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT;
1017 ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS;
1018 }
1019
1020 ar->wow.max_num_patterns = ATH12K_WOW_PATTERNS;
1021 ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
1022 ar->ah->hw->wiphy->wowlan = &ar->wow.wowlan_support;
1023
1024 device_set_wakeup_capable(ar->ab->dev, true);
1025
1026 return 0;
1027}