1 // SPDX-License-Identifier: BSD-3-Clause-Clear
2 /*
3 * Copyright (c) 2020 The Linux Foundation. All rights reserved.
4 * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
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
22 static 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
ath12k_wow_is_p2p_vdev(struct ath12k_vif * ahvif)32 static 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
ath12k_wow_enable(struct ath12k * ar)39 int 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
ath12k_wow_wakeup(struct ath12k * ar)81 int 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
ath12k_wow_vif_cleanup(struct ath12k_link_vif * arvif)104 static 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
ath12k_wow_cleanup(struct ath12k * ar)130 static 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 if (arvif != &arvif->ahvif->deflink)
139 continue;
140
141 ret = ath12k_wow_vif_cleanup(arvif);
142 if (ret) {
143 ath12k_warn(ar->ab, "failed to clean wow wakeups on vdev %i: %d\n",
144 arvif->vdev_id, ret);
145 return ret;
146 }
147 }
148
149 return 0;
150 }
151
152 /* Convert a 802.3 format to a 802.11 format.
153 * +------------+-----------+--------+----------------+
154 * 802.3: |dest mac(6B)|src mac(6B)|type(2B)| body... |
155 * +------------+-----------+--------+----------------+
156 * |__ |_______ |____________ |________
157 * | | | |
158 * +--+------------+----+-----------+---------------+-----------+
159 * 802.11: |4B|dest mac(6B)| 6B |src mac(6B)| 8B |type(2B)| body... |
160 * +--+------------+----+-----------+---------------+-----------+
161 */
162 static void
ath12k_wow_convert_8023_to_80211(struct ath12k * ar,const struct cfg80211_pkt_pattern * eth_pattern,struct ath12k_pkt_pattern * i80211_pattern)163 ath12k_wow_convert_8023_to_80211(struct ath12k *ar,
164 const struct cfg80211_pkt_pattern *eth_pattern,
165 struct ath12k_pkt_pattern *i80211_pattern)
166 {
167 size_t r1042_eth_ofs = offsetof(struct rfc1042_hdr, eth_type);
168 size_t a1_ofs = offsetof(struct ieee80211_hdr_3addr, addr1);
169 size_t a3_ofs = offsetof(struct ieee80211_hdr_3addr, addr3);
170 size_t i80211_hdr_len = sizeof(struct ieee80211_hdr_3addr);
171 size_t prot_ofs = offsetof(struct ethhdr, h_proto);
172 size_t src_ofs = offsetof(struct ethhdr, h_source);
173 u8 eth_bytemask[WOW_MAX_PATTERN_SIZE] = {};
174 const u8 *eth_pat = eth_pattern->pattern;
175 size_t eth_pat_len = eth_pattern->pattern_len;
176 size_t eth_pkt_ofs = eth_pattern->pkt_offset;
177 u8 *bytemask = i80211_pattern->bytemask;
178 u8 *pat = i80211_pattern->pattern;
179 size_t pat_len = 0;
180 size_t pkt_ofs = 0;
181 size_t delta;
182 int i;
183
184 /* convert bitmask to bytemask */
185 for (i = 0; i < eth_pat_len; i++)
186 if (eth_pattern->mask[i / 8] & BIT(i % 8))
187 eth_bytemask[i] = 0xff;
188
189 if (eth_pkt_ofs < ETH_ALEN) {
190 pkt_ofs = eth_pkt_ofs + a1_ofs;
191
192 if (size_add(eth_pkt_ofs, eth_pat_len) < ETH_ALEN) {
193 memcpy(pat, eth_pat, eth_pat_len);
194 memcpy(bytemask, eth_bytemask, eth_pat_len);
195
196 pat_len = eth_pat_len;
197 } else if (size_add(eth_pkt_ofs, eth_pat_len) < prot_ofs) {
198 memcpy(pat, eth_pat, ETH_ALEN - eth_pkt_ofs);
199 memcpy(bytemask, eth_bytemask, ETH_ALEN - eth_pkt_ofs);
200
201 delta = eth_pkt_ofs + eth_pat_len - src_ofs;
202 memcpy(pat + a3_ofs - pkt_ofs,
203 eth_pat + ETH_ALEN - eth_pkt_ofs,
204 delta);
205 memcpy(bytemask + a3_ofs - pkt_ofs,
206 eth_bytemask + ETH_ALEN - eth_pkt_ofs,
207 delta);
208
209 pat_len = a3_ofs - pkt_ofs + delta;
210 } else {
211 memcpy(pat, eth_pat, ETH_ALEN - eth_pkt_ofs);
212 memcpy(bytemask, eth_bytemask, ETH_ALEN - eth_pkt_ofs);
213
214 memcpy(pat + a3_ofs - pkt_ofs,
215 eth_pat + ETH_ALEN - eth_pkt_ofs,
216 ETH_ALEN);
217 memcpy(bytemask + a3_ofs - pkt_ofs,
218 eth_bytemask + ETH_ALEN - eth_pkt_ofs,
219 ETH_ALEN);
220
221 delta = eth_pkt_ofs + eth_pat_len - prot_ofs;
222 memcpy(pat + i80211_hdr_len + r1042_eth_ofs - pkt_ofs,
223 eth_pat + prot_ofs - eth_pkt_ofs,
224 delta);
225 memcpy(bytemask + i80211_hdr_len + r1042_eth_ofs - pkt_ofs,
226 eth_bytemask + prot_ofs - eth_pkt_ofs,
227 delta);
228
229 pat_len = i80211_hdr_len + r1042_eth_ofs - pkt_ofs + delta;
230 }
231 } else if (eth_pkt_ofs < prot_ofs) {
232 pkt_ofs = eth_pkt_ofs - ETH_ALEN + a3_ofs;
233
234 if (size_add(eth_pkt_ofs, eth_pat_len) < prot_ofs) {
235 memcpy(pat, eth_pat, eth_pat_len);
236 memcpy(bytemask, eth_bytemask, eth_pat_len);
237
238 pat_len = eth_pat_len;
239 } else {
240 memcpy(pat, eth_pat, prot_ofs - eth_pkt_ofs);
241 memcpy(bytemask, eth_bytemask, prot_ofs - eth_pkt_ofs);
242
243 delta = eth_pkt_ofs + eth_pat_len - prot_ofs;
244 memcpy(pat + i80211_hdr_len + r1042_eth_ofs - pkt_ofs,
245 eth_pat + prot_ofs - eth_pkt_ofs,
246 delta);
247 memcpy(bytemask + i80211_hdr_len + r1042_eth_ofs - pkt_ofs,
248 eth_bytemask + prot_ofs - eth_pkt_ofs,
249 delta);
250
251 pat_len = i80211_hdr_len + r1042_eth_ofs - pkt_ofs + delta;
252 }
253 } else {
254 pkt_ofs = eth_pkt_ofs - prot_ofs + i80211_hdr_len + r1042_eth_ofs;
255
256 memcpy(pat, eth_pat, eth_pat_len);
257 memcpy(bytemask, eth_bytemask, eth_pat_len);
258
259 pat_len = eth_pat_len;
260 }
261
262 i80211_pattern->pattern_len = pat_len;
263 i80211_pattern->pkt_offset = pkt_ofs;
264 }
265
266 static int
ath12k_wow_pno_check_and_convert(struct ath12k * ar,u32 vdev_id,const struct cfg80211_sched_scan_request * nd_config,struct wmi_pno_scan_req_arg * pno)267 ath12k_wow_pno_check_and_convert(struct ath12k *ar, u32 vdev_id,
268 const struct cfg80211_sched_scan_request *nd_config,
269 struct wmi_pno_scan_req_arg *pno)
270 {
271 int i, j;
272 u8 ssid_len;
273
274 pno->enable = 1;
275 pno->vdev_id = vdev_id;
276 pno->uc_networks_count = nd_config->n_match_sets;
277
278 if (!pno->uc_networks_count ||
279 pno->uc_networks_count > WMI_PNO_MAX_SUPP_NETWORKS)
280 return -EINVAL;
281
282 if (nd_config->n_channels > WMI_PNO_MAX_NETW_CHANNELS_EX)
283 return -EINVAL;
284
285 /* Filling per profile params */
286 for (i = 0; i < pno->uc_networks_count; i++) {
287 ssid_len = nd_config->match_sets[i].ssid.ssid_len;
288
289 if (ssid_len == 0 || ssid_len > 32)
290 return -EINVAL;
291
292 pno->a_networks[i].ssid.ssid_len = ssid_len;
293
294 memcpy(pno->a_networks[i].ssid.ssid,
295 nd_config->match_sets[i].ssid.ssid,
296 ssid_len);
297 pno->a_networks[i].authentication = 0;
298 pno->a_networks[i].encryption = 0;
299 pno->a_networks[i].bcast_nw_type = 0;
300
301 /* Copying list of valid channel into request */
302 pno->a_networks[i].channel_count = nd_config->n_channels;
303 pno->a_networks[i].rssi_threshold = nd_config->match_sets[i].rssi_thold;
304
305 for (j = 0; j < nd_config->n_channels; j++) {
306 pno->a_networks[i].channels[j] =
307 nd_config->channels[j]->center_freq;
308 }
309 }
310
311 /* set scan to passive if no SSIDs are specified in the request */
312 if (nd_config->n_ssids == 0)
313 pno->do_passive_scan = true;
314 else
315 pno->do_passive_scan = false;
316
317 for (i = 0; i < nd_config->n_ssids; i++) {
318 for (j = 0; j < pno->uc_networks_count; j++) {
319 if (pno->a_networks[j].ssid.ssid_len ==
320 nd_config->ssids[i].ssid_len &&
321 !memcmp(pno->a_networks[j].ssid.ssid,
322 nd_config->ssids[i].ssid,
323 pno->a_networks[j].ssid.ssid_len)) {
324 pno->a_networks[j].bcast_nw_type = BCAST_HIDDEN;
325 break;
326 }
327 }
328 }
329
330 if (nd_config->n_scan_plans == 2) {
331 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
332 pno->fast_scan_max_cycles = nd_config->scan_plans[0].iterations;
333 pno->slow_scan_period =
334 nd_config->scan_plans[1].interval * MSEC_PER_SEC;
335 } else if (nd_config->n_scan_plans == 1) {
336 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
337 pno->fast_scan_max_cycles = 1;
338 pno->slow_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
339 } else {
340 ath12k_warn(ar->ab, "Invalid number of PNO scan plans: %d",
341 nd_config->n_scan_plans);
342 }
343
344 if (nd_config->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
345 /* enable mac randomization */
346 pno->enable_pno_scan_randomization = 1;
347 memcpy(pno->mac_addr, nd_config->mac_addr, ETH_ALEN);
348 memcpy(pno->mac_addr_mask, nd_config->mac_addr_mask, ETH_ALEN);
349 }
350
351 pno->delay_start_time = nd_config->delay;
352
353 /* Current FW does not support min-max range for dwell time */
354 pno->active_max_time = WMI_ACTIVE_MAX_CHANNEL_TIME;
355 pno->passive_max_time = WMI_PASSIVE_MAX_CHANNEL_TIME;
356
357 return 0;
358 }
359
ath12k_wow_vif_set_wakeups(struct ath12k_link_vif * arvif,struct cfg80211_wowlan * wowlan)360 static int ath12k_wow_vif_set_wakeups(struct ath12k_link_vif *arvif,
361 struct cfg80211_wowlan *wowlan)
362 {
363 const struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
364 struct ath12k *ar = arvif->ar;
365 unsigned long wow_mask = 0;
366 int pattern_id = 0;
367 int ret, i, j;
368
369 /* Setup requested WOW features */
370 switch (arvif->ahvif->vdev_type) {
371 case WMI_VDEV_TYPE_IBSS:
372 __set_bit(WOW_BEACON_EVENT, &wow_mask);
373 fallthrough;
374 case WMI_VDEV_TYPE_AP:
375 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
376 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
377 __set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask);
378 __set_bit(WOW_AUTH_REQ_EVENT, &wow_mask);
379 __set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask);
380 __set_bit(WOW_HTT_EVENT, &wow_mask);
381 __set_bit(WOW_RA_MATCH_EVENT, &wow_mask);
382 break;
383 case WMI_VDEV_TYPE_STA:
384 if (wowlan->disconnect) {
385 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
386 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
387 __set_bit(WOW_BMISS_EVENT, &wow_mask);
388 __set_bit(WOW_CSA_IE_EVENT, &wow_mask);
389 }
390
391 if (wowlan->magic_pkt)
392 __set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask);
393
394 if (wowlan->nd_config) {
395 struct wmi_pno_scan_req_arg *pno;
396 int ret;
397
398 pno = kzalloc_obj(*pno);
399 if (!pno)
400 return -ENOMEM;
401
402 ar->nlo_enabled = true;
403
404 ret = ath12k_wow_pno_check_and_convert(ar, arvif->vdev_id,
405 wowlan->nd_config, pno);
406 if (!ret) {
407 ath12k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
408 __set_bit(WOW_NLO_DETECTED_EVENT, &wow_mask);
409 }
410
411 kfree(pno);
412 }
413 break;
414 default:
415 break;
416 }
417
418 for (i = 0; i < wowlan->n_patterns; i++) {
419 const struct cfg80211_pkt_pattern *eth_pattern = &patterns[i];
420 struct ath12k_pkt_pattern new_pattern = {};
421
422 if (WARN_ON(eth_pattern->pattern_len > WOW_MAX_PATTERN_SIZE))
423 return -EINVAL;
424
425 if (ar->ab->wow.wmi_conf_rx_decap_mode ==
426 ATH12K_HW_TXRX_NATIVE_WIFI) {
427 ath12k_wow_convert_8023_to_80211(ar, eth_pattern,
428 &new_pattern);
429
430 if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE))
431 return -EINVAL;
432 } else {
433 memcpy(new_pattern.pattern, eth_pattern->pattern,
434 eth_pattern->pattern_len);
435
436 /* convert bitmask to bytemask */
437 for (j = 0; j < eth_pattern->pattern_len; j++)
438 if (eth_pattern->mask[j / 8] & BIT(j % 8))
439 new_pattern.bytemask[j] = 0xff;
440
441 new_pattern.pattern_len = eth_pattern->pattern_len;
442 new_pattern.pkt_offset = eth_pattern->pkt_offset;
443 }
444
445 ret = ath12k_wmi_wow_add_pattern(ar, arvif->vdev_id,
446 pattern_id,
447 new_pattern.pattern,
448 new_pattern.bytemask,
449 new_pattern.pattern_len,
450 new_pattern.pkt_offset);
451 if (ret) {
452 ath12k_warn(ar->ab, "failed to add pattern %i to vdev %i: %d\n",
453 pattern_id,
454 arvif->vdev_id, ret);
455 return ret;
456 }
457
458 pattern_id++;
459 __set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask);
460 }
461
462 for (i = 0; i < WOW_EVENT_MAX; i++) {
463 if (!test_bit(i, &wow_mask))
464 continue;
465 ret = ath12k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1);
466 if (ret) {
467 ath12k_warn(ar->ab, "failed to enable wakeup event %s on vdev %i: %d\n",
468 wow_wakeup_event(i), arvif->vdev_id, ret);
469 return ret;
470 }
471 }
472
473 return 0;
474 }
475
ath12k_wow_set_wakeups(struct ath12k * ar,struct cfg80211_wowlan * wowlan)476 static int ath12k_wow_set_wakeups(struct ath12k *ar,
477 struct cfg80211_wowlan *wowlan)
478 {
479 struct ath12k_link_vif *arvif;
480 int ret;
481
482 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
483
484 list_for_each_entry(arvif, &ar->arvifs, list) {
485 if (arvif != &arvif->ahvif->deflink)
486 continue;
487
488 if (ath12k_wow_is_p2p_vdev(arvif->ahvif))
489 continue;
490
491 ret = ath12k_wow_vif_set_wakeups(arvif, wowlan);
492 if (ret) {
493 ath12k_warn(ar->ab, "failed to set wow wakeups on vdev %i: %d\n",
494 arvif->vdev_id, ret);
495 return ret;
496 }
497 }
498
499 return 0;
500 }
501
ath12k_wow_vdev_clean_nlo(struct ath12k * ar,u32 vdev_id)502 static int ath12k_wow_vdev_clean_nlo(struct ath12k *ar, u32 vdev_id)
503 {
504 struct wmi_pno_scan_req_arg *pno;
505 int ret;
506
507 if (!ar->nlo_enabled)
508 return 0;
509
510 pno = kzalloc_obj(*pno);
511 if (!pno)
512 return -ENOMEM;
513
514 pno->enable = 0;
515 ret = ath12k_wmi_wow_config_pno(ar, vdev_id, pno);
516 if (ret) {
517 ath12k_warn(ar->ab, "failed to disable PNO: %d", ret);
518 goto out;
519 }
520
521 ar->nlo_enabled = false;
522
523 out:
524 kfree(pno);
525 return ret;
526 }
527
ath12k_wow_vif_clean_nlo(struct ath12k_link_vif * arvif)528 static int ath12k_wow_vif_clean_nlo(struct ath12k_link_vif *arvif)
529 {
530 struct ath12k *ar = arvif->ar;
531
532 switch (arvif->ahvif->vdev_type) {
533 case WMI_VDEV_TYPE_STA:
534 return ath12k_wow_vdev_clean_nlo(ar, arvif->vdev_id);
535 default:
536 return 0;
537 }
538 }
539
ath12k_wow_nlo_cleanup(struct ath12k * ar)540 static int ath12k_wow_nlo_cleanup(struct ath12k *ar)
541 {
542 struct ath12k_link_vif *arvif;
543 int ret;
544
545 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
546
547 list_for_each_entry(arvif, &ar->arvifs, list) {
548 if (arvif != &arvif->ahvif->deflink)
549 continue;
550
551 if (ath12k_wow_is_p2p_vdev(arvif->ahvif))
552 continue;
553
554 ret = ath12k_wow_vif_clean_nlo(arvif);
555 if (ret) {
556 ath12k_warn(ar->ab, "failed to clean nlo settings on vdev %i: %d\n",
557 arvif->vdev_id, ret);
558 return ret;
559 }
560 }
561
562 return 0;
563 }
564
ath12k_wow_set_hw_filter(struct ath12k * ar)565 static int ath12k_wow_set_hw_filter(struct ath12k *ar)
566 {
567 struct wmi_hw_data_filter_arg arg;
568 struct ath12k_link_vif *arvif;
569 int ret;
570
571 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
572
573 list_for_each_entry(arvif, &ar->arvifs, list) {
574 if (arvif->ahvif->vdev_type != WMI_VDEV_TYPE_STA)
575 continue;
576
577 arg.vdev_id = arvif->vdev_id;
578 arg.enable = true;
579 arg.hw_filter_bitmap = WMI_HW_DATA_FILTER_DROP_NON_ICMPV6_MC;
580 ret = ath12k_wmi_hw_data_filter_cmd(ar, &arg);
581 if (ret) {
582 ath12k_warn(ar->ab, "failed to set hw data filter on vdev %i: %d\n",
583 arvif->vdev_id, ret);
584 return ret;
585 }
586 }
587
588 return 0;
589 }
590
ath12k_wow_clear_hw_filter(struct ath12k * ar)591 static int ath12k_wow_clear_hw_filter(struct ath12k *ar)
592 {
593 struct wmi_hw_data_filter_arg arg;
594 struct ath12k_link_vif *arvif;
595 int ret;
596
597 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
598
599 list_for_each_entry(arvif, &ar->arvifs, list) {
600 if (arvif->ahvif->vdev_type != WMI_VDEV_TYPE_STA)
601 continue;
602
603 arg.vdev_id = arvif->vdev_id;
604 arg.enable = false;
605 arg.hw_filter_bitmap = 0;
606 ret = ath12k_wmi_hw_data_filter_cmd(ar, &arg);
607
608 if (ret) {
609 ath12k_warn(ar->ab, "failed to clear hw data filter on vdev %i: %d\n",
610 arvif->vdev_id, ret);
611 return ret;
612 }
613 }
614
615 return 0;
616 }
617
ath12k_wow_generate_ns_mc_addr(struct ath12k_base * ab,struct wmi_arp_ns_offload_arg * offload)618 static void ath12k_wow_generate_ns_mc_addr(struct ath12k_base *ab,
619 struct wmi_arp_ns_offload_arg *offload)
620 {
621 int i;
622
623 for (i = 0; i < offload->ipv6_count; i++) {
624 offload->self_ipv6_addr[i][0] = 0xff;
625 offload->self_ipv6_addr[i][1] = 0x02;
626 offload->self_ipv6_addr[i][11] = 0x01;
627 offload->self_ipv6_addr[i][12] = 0xff;
628 offload->self_ipv6_addr[i][13] =
629 offload->ipv6_addr[i][13];
630 offload->self_ipv6_addr[i][14] =
631 offload->ipv6_addr[i][14];
632 offload->self_ipv6_addr[i][15] =
633 offload->ipv6_addr[i][15];
634 ath12k_dbg(ab, ATH12K_DBG_WOW, "NS solicited addr %pI6\n",
635 offload->self_ipv6_addr[i]);
636 }
637 }
638
ath12k_wow_prepare_ns_offload(struct ath12k_link_vif * arvif,struct wmi_arp_ns_offload_arg * offload)639 static void ath12k_wow_prepare_ns_offload(struct ath12k_link_vif *arvif,
640 struct wmi_arp_ns_offload_arg *offload)
641 {
642 struct net_device *ndev = ieee80211_vif_to_wdev(arvif->ahvif->vif)->netdev;
643 struct ath12k_base *ab = arvif->ar->ab;
644 struct inet6_ifaddr *ifa6;
645 struct ifacaddr6 *ifaca6;
646 struct inet6_dev *idev;
647 u32 count = 0, scope;
648
649 if (!ndev)
650 return;
651
652 idev = in6_dev_get(ndev);
653 if (!idev)
654 return;
655
656 ath12k_dbg(ab, ATH12K_DBG_WOW, "wow prepare ns offload\n");
657
658 read_lock_bh(&idev->lock);
659
660 /* get unicast address */
661 list_for_each_entry(ifa6, &idev->addr_list, if_list) {
662 if (count >= WMI_IPV6_MAX_COUNT)
663 goto unlock;
664
665 if (ifa6->flags & IFA_F_DADFAILED)
666 continue;
667
668 scope = ipv6_addr_src_scope(&ifa6->addr);
669 if (scope != IPV6_ADDR_SCOPE_LINKLOCAL &&
670 scope != IPV6_ADDR_SCOPE_GLOBAL) {
671 ath12k_dbg(ab, ATH12K_DBG_WOW,
672 "Unsupported ipv6 scope: %d\n", scope);
673 continue;
674 }
675
676 memcpy(offload->ipv6_addr[count], &ifa6->addr.s6_addr,
677 sizeof(ifa6->addr.s6_addr));
678 offload->ipv6_type[count] = WMI_IPV6_UC_TYPE;
679 ath12k_dbg(ab, ATH12K_DBG_WOW, "mac count %d ipv6 uc %pI6 scope %d\n",
680 count, offload->ipv6_addr[count],
681 scope);
682 count++;
683 }
684
685 /* get anycast address */
686 rcu_read_lock();
687
688 for (ifaca6 = rcu_dereference(idev->ac_list); ifaca6;
689 ifaca6 = rcu_dereference(ifaca6->aca_next)) {
690 if (count >= WMI_IPV6_MAX_COUNT) {
691 rcu_read_unlock();
692 goto unlock;
693 }
694
695 scope = ipv6_addr_src_scope(&ifaca6->aca_addr);
696 if (scope != IPV6_ADDR_SCOPE_LINKLOCAL &&
697 scope != IPV6_ADDR_SCOPE_GLOBAL) {
698 ath12k_dbg(ab, ATH12K_DBG_WOW,
699 "Unsupported ipv scope: %d\n", scope);
700 continue;
701 }
702
703 memcpy(offload->ipv6_addr[count], &ifaca6->aca_addr,
704 sizeof(ifaca6->aca_addr));
705 offload->ipv6_type[count] = WMI_IPV6_AC_TYPE;
706 ath12k_dbg(ab, ATH12K_DBG_WOW, "mac count %d ipv6 ac %pI6 scope %d\n",
707 count, offload->ipv6_addr[count],
708 scope);
709 count++;
710 }
711
712 rcu_read_unlock();
713
714 unlock:
715 read_unlock_bh(&idev->lock);
716
717 in6_dev_put(idev);
718
719 offload->ipv6_count = count;
720 ath12k_wow_generate_ns_mc_addr(ab, offload);
721 }
722
ath12k_wow_prepare_arp_offload(struct ath12k_link_vif * arvif,struct wmi_arp_ns_offload_arg * offload)723 static void ath12k_wow_prepare_arp_offload(struct ath12k_link_vif *arvif,
724 struct wmi_arp_ns_offload_arg *offload)
725 {
726 struct ieee80211_vif *vif = arvif->ahvif->vif;
727 struct ieee80211_vif_cfg vif_cfg = vif->cfg;
728 struct ath12k_base *ab = arvif->ar->ab;
729 u32 ipv4_cnt;
730
731 ath12k_dbg(ab, ATH12K_DBG_WOW, "wow prepare arp offload\n");
732
733 ipv4_cnt = min(vif_cfg.arp_addr_cnt, WMI_IPV4_MAX_COUNT);
734 memcpy(offload->ipv4_addr, vif_cfg.arp_addr_list, ipv4_cnt * sizeof(u32));
735 offload->ipv4_count = ipv4_cnt;
736
737 ath12k_dbg(ab, ATH12K_DBG_WOW,
738 "wow arp_addr_cnt %d vif->addr %pM, offload_addr %pI4\n",
739 vif_cfg.arp_addr_cnt, vif->addr, offload->ipv4_addr);
740 }
741
ath12k_wow_arp_ns_offload(struct ath12k * ar,bool enable)742 static int ath12k_wow_arp_ns_offload(struct ath12k *ar, bool enable)
743 {
744 struct wmi_arp_ns_offload_arg *offload;
745 struct ath12k_link_vif *arvif;
746 struct ath12k_vif *ahvif;
747 int ret;
748
749 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
750
751 offload = kmalloc_obj(*offload);
752 if (!offload)
753 return -ENOMEM;
754
755 list_for_each_entry(arvif, &ar->arvifs, list) {
756 ahvif = arvif->ahvif;
757
758 if (arvif != &ahvif->deflink)
759 continue;
760
761 if (ahvif->vdev_type != WMI_VDEV_TYPE_STA)
762 continue;
763
764 memset(offload, 0, sizeof(*offload));
765
766 memcpy(offload->mac_addr, ahvif->vif->addr, ETH_ALEN);
767 ath12k_wow_prepare_ns_offload(arvif, offload);
768 ath12k_wow_prepare_arp_offload(arvif, offload);
769
770 ret = ath12k_wmi_arp_ns_offload(ar, arvif, offload, enable);
771 if (ret) {
772 ath12k_warn(ar->ab, "failed to set arp ns offload vdev %i: enable %d, ret %d\n",
773 arvif->vdev_id, enable, ret);
774 kfree(offload);
775 return ret;
776 }
777 }
778
779 kfree(offload);
780
781 return 0;
782 }
783
ath12k_gtk_rekey_offload(struct ath12k * ar,bool enable)784 static int ath12k_gtk_rekey_offload(struct ath12k *ar, bool enable)
785 {
786 struct ath12k_link_vif *arvif;
787 int ret;
788
789 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
790
791 list_for_each_entry(arvif, &ar->arvifs, list) {
792 if (arvif != &arvif->ahvif->deflink)
793 continue;
794
795 if (arvif->ahvif->vdev_type != WMI_VDEV_TYPE_STA ||
796 !arvif->is_up ||
797 !arvif->rekey_data.enable_offload)
798 continue;
799
800 /* get rekey info before disable rekey offload */
801 if (!enable) {
802 ret = ath12k_wmi_gtk_rekey_getinfo(ar, arvif);
803 if (ret) {
804 ath12k_warn(ar->ab, "failed to request rekey info vdev %i, ret %d\n",
805 arvif->vdev_id, ret);
806 return ret;
807 }
808 }
809
810 ret = ath12k_wmi_gtk_rekey_offload(ar, arvif, enable);
811
812 if (ret) {
813 ath12k_warn(ar->ab, "failed to offload gtk reky vdev %i: enable %d, ret %d\n",
814 arvif->vdev_id, enable, ret);
815 return ret;
816 }
817 }
818
819 return 0;
820 }
821
ath12k_wow_protocol_offload(struct ath12k * ar,bool enable)822 static int ath12k_wow_protocol_offload(struct ath12k *ar, bool enable)
823 {
824 int ret;
825
826 ret = ath12k_wow_arp_ns_offload(ar, enable);
827 if (ret) {
828 ath12k_warn(ar->ab, "failed to offload ARP and NS %d %d\n",
829 enable, ret);
830 return ret;
831 }
832
833 ret = ath12k_gtk_rekey_offload(ar, enable);
834 if (ret) {
835 ath12k_warn(ar->ab, "failed to offload gtk rekey %d %d\n",
836 enable, ret);
837 return ret;
838 }
839
840 return 0;
841 }
842
ath12k_wow_set_keepalive(struct ath12k * ar,enum wmi_sta_keepalive_method method,u32 interval)843 static int ath12k_wow_set_keepalive(struct ath12k *ar,
844 enum wmi_sta_keepalive_method method,
845 u32 interval)
846 {
847 struct ath12k_link_vif *arvif;
848 int ret;
849
850 lockdep_assert_wiphy(ath12k_ar_to_hw(ar)->wiphy);
851
852 list_for_each_entry(arvif, &ar->arvifs, list) {
853 ret = ath12k_mac_vif_set_keepalive(arvif, method, interval);
854 if (ret)
855 return ret;
856 }
857
858 return 0;
859 }
860
ath12k_wow_op_suspend(struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)861 int ath12k_wow_op_suspend(struct ieee80211_hw *hw,
862 struct cfg80211_wowlan *wowlan)
863 {
864 struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
865 struct ath12k *ar = ath12k_ah_to_ar(ah, 0);
866 int ret;
867
868 lockdep_assert_wiphy(hw->wiphy);
869
870 ret = ath12k_wow_cleanup(ar);
871 if (ret) {
872 ath12k_warn(ar->ab, "failed to clear wow wakeup events: %d\n",
873 ret);
874 goto exit;
875 }
876
877 ret = ath12k_wow_set_wakeups(ar, wowlan);
878 if (ret) {
879 ath12k_warn(ar->ab, "failed to set wow wakeup events: %d\n",
880 ret);
881 goto cleanup;
882 }
883
884 ret = ath12k_wow_protocol_offload(ar, true);
885 if (ret) {
886 ath12k_warn(ar->ab, "failed to set wow protocol offload events: %d\n",
887 ret);
888 goto cleanup;
889 }
890
891 ret = ath12k_mac_wait_tx_complete(ar);
892 if (ret) {
893 ath12k_warn(ar->ab, "failed to wait tx complete: %d\n", ret);
894 goto cleanup;
895 }
896
897 ret = ath12k_wow_set_hw_filter(ar);
898 if (ret) {
899 ath12k_warn(ar->ab, "failed to set hw filter: %d\n",
900 ret);
901 goto cleanup;
902 }
903
904 ret = ath12k_wow_set_keepalive(ar,
905 WMI_STA_KEEPALIVE_METHOD_NULL_FRAME,
906 WMI_STA_KEEPALIVE_INTERVAL_DEFAULT);
907 if (ret) {
908 ath12k_warn(ar->ab, "failed to enable wow keepalive: %d\n", ret);
909 goto cleanup;
910 }
911
912 ret = ath12k_wow_enable(ar);
913 if (ret) {
914 ath12k_warn(ar->ab, "failed to start wow: %d\n", ret);
915 goto cleanup;
916 }
917
918 ath12k_hif_irq_disable(ar->ab);
919 ath12k_hif_ce_irq_disable(ar->ab);
920
921 ret = ath12k_hif_suspend(ar->ab);
922 if (ret) {
923 ath12k_warn(ar->ab, "failed to suspend hif: %d\n", ret);
924 goto wakeup;
925 }
926
927 goto exit;
928
929 wakeup:
930 ath12k_wow_wakeup(ar);
931
932 cleanup:
933 ath12k_wow_cleanup(ar);
934
935 exit:
936 return ret ? 1 : 0;
937 }
938 EXPORT_SYMBOL(ath12k_wow_op_suspend);
939
ath12k_wow_op_set_wakeup(struct ieee80211_hw * hw,bool enabled)940 void ath12k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled)
941 {
942 struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
943 struct ath12k *ar = ath12k_ah_to_ar(ah, 0);
944
945 lockdep_assert_wiphy(hw->wiphy);
946
947 device_set_wakeup_enable(ar->ab->dev, enabled);
948 }
949 EXPORT_SYMBOL(ath12k_wow_op_set_wakeup);
950
ath12k_wow_op_resume(struct ieee80211_hw * hw)951 int ath12k_wow_op_resume(struct ieee80211_hw *hw)
952 {
953 struct ath12k_hw *ah = ath12k_hw_to_ah(hw);
954 struct ath12k *ar = ath12k_ah_to_ar(ah, 0);
955 int ret;
956
957 lockdep_assert_wiphy(hw->wiphy);
958
959 ret = ath12k_hif_resume(ar->ab);
960 if (ret) {
961 ath12k_warn(ar->ab, "failed to resume hif: %d\n", ret);
962 goto exit;
963 }
964
965 ath12k_hif_ce_irq_enable(ar->ab);
966 ath12k_hif_irq_enable(ar->ab);
967
968 ret = ath12k_wow_wakeup(ar);
969 if (ret) {
970 ath12k_warn(ar->ab, "failed to wakeup from wow: %d\n", ret);
971 goto exit;
972 }
973
974 ret = ath12k_wow_nlo_cleanup(ar);
975 if (ret) {
976 ath12k_warn(ar->ab, "failed to cleanup nlo: %d\n", ret);
977 goto exit;
978 }
979
980 ret = ath12k_wow_clear_hw_filter(ar);
981 if (ret) {
982 ath12k_warn(ar->ab, "failed to clear hw filter: %d\n", ret);
983 goto exit;
984 }
985
986 ret = ath12k_wow_protocol_offload(ar, false);
987 if (ret) {
988 ath12k_warn(ar->ab, "failed to clear wow protocol offload events: %d\n",
989 ret);
990 goto exit;
991 }
992
993 ret = ath12k_wow_set_keepalive(ar,
994 WMI_STA_KEEPALIVE_METHOD_NULL_FRAME,
995 WMI_STA_KEEPALIVE_INTERVAL_DISABLE);
996 if (ret) {
997 ath12k_warn(ar->ab, "failed to disable wow keepalive: %d\n", ret);
998 goto exit;
999 }
1000
1001 exit:
1002 if (ret) {
1003 switch (ah->state) {
1004 case ATH12K_HW_STATE_ON:
1005 ah->state = ATH12K_HW_STATE_RESTARTING;
1006 ret = 1;
1007 break;
1008 case ATH12K_HW_STATE_OFF:
1009 case ATH12K_HW_STATE_RESTARTING:
1010 case ATH12K_HW_STATE_RESTARTED:
1011 case ATH12K_HW_STATE_WEDGED:
1012 case ATH12K_HW_STATE_TM:
1013 ath12k_warn(ar->ab, "encountered unexpected device state %d on resume, cannot recover\n",
1014 ah->state);
1015 ret = -EIO;
1016 break;
1017 }
1018 }
1019
1020 return ret;
1021 }
1022 EXPORT_SYMBOL(ath12k_wow_op_resume);
1023
ath12k_wow_init(struct ath12k * ar)1024 int ath12k_wow_init(struct ath12k *ar)
1025 {
1026 if (!test_bit(WMI_TLV_SERVICE_WOW, ar->wmi->wmi_ab->svc_map))
1027 return 0;
1028
1029 ar->wow.wowlan_support = ath12k_wowlan_support;
1030
1031 if (ar->ab->wow.wmi_conf_rx_decap_mode == ATH12K_HW_TXRX_NATIVE_WIFI) {
1032 ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE;
1033 ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE;
1034 }
1035
1036 if (test_bit(WMI_TLV_SERVICE_NLO, ar->wmi->wmi_ab->svc_map)) {
1037 ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT;
1038 ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS;
1039 }
1040
1041 ar->wow.max_num_patterns = ATH12K_WOW_PATTERNS;
1042 ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
1043 ar->ah->hw->wiphy->wowlan = &ar->wow.wowlan_support;
1044
1045 device_set_wakeup_capable(ar->ab->dev, true);
1046
1047 return 0;
1048 }
1049