1 // SPDX-License-Identifier: BSD-3-Clause-Clear 2 /* 3 * Copyright (c) 2020 The Linux Foundation. All rights reserved. 4 * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved. 5 */ 6 7 #include <linux/delay.h> 8 9 #include "mac.h" 10 11 #include <net/mac80211.h> 12 #include "core.h" 13 #include "hif.h" 14 #include "debug.h" 15 #include "wmi.h" 16 #include "wow.h" 17 #include "dp_rx.h" 18 19 static const struct wiphy_wowlan_support ath11k_wowlan_support = { 20 .flags = WIPHY_WOWLAN_DISCONNECT | 21 WIPHY_WOWLAN_MAGIC_PKT | 22 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 23 WIPHY_WOWLAN_GTK_REKEY_FAILURE, 24 .pattern_min_len = WOW_MIN_PATTERN_SIZE, 25 .pattern_max_len = WOW_MAX_PATTERN_SIZE, 26 .max_pkt_offset = WOW_MAX_PKT_OFFSET, 27 }; 28 29 int ath11k_wow_enable(struct ath11k_base *ab) 30 { 31 struct ath11k *ar = ath11k_ab_to_ar(ab, 0); 32 int i, ret; 33 34 clear_bit(ATH11K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags); 35 36 for (i = 0; i < ATH11K_WOW_RETRY_NUM; i++) { 37 reinit_completion(&ab->htc_suspend); 38 39 ret = ath11k_wmi_wow_enable(ar); 40 if (ret) { 41 ath11k_warn(ab, "failed to issue wow enable: %d\n", ret); 42 return ret; 43 } 44 45 ret = wait_for_completion_timeout(&ab->htc_suspend, 3 * HZ); 46 if (ret == 0) { 47 ath11k_warn(ab, 48 "timed out while waiting for htc suspend completion\n"); 49 return -ETIMEDOUT; 50 } 51 52 if (test_bit(ATH11K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags)) 53 /* success, suspend complete received */ 54 return 0; 55 56 ath11k_warn(ab, "htc suspend not complete, retrying (try %d)\n", 57 i); 58 msleep(ATH11K_WOW_RETRY_WAIT_MS); 59 } 60 61 ath11k_warn(ab, "htc suspend not complete, failing after %d tries\n", i); 62 63 return -ETIMEDOUT; 64 } 65 66 int ath11k_wow_wakeup(struct ath11k_base *ab) 67 { 68 struct ath11k *ar = ath11k_ab_to_ar(ab, 0); 69 int ret; 70 71 /* In the case of WCN6750, WoW wakeup is done 72 * by sending SMP2P power save exit message 73 * to the target processor. 74 */ 75 if (ab->hw_params.smp2p_wow_exit) 76 return 0; 77 78 reinit_completion(&ab->wow.wakeup_completed); 79 80 ret = ath11k_wmi_wow_host_wakeup_ind(ar); 81 if (ret) { 82 ath11k_warn(ab, "failed to send wow wakeup indication: %d\n", 83 ret); 84 return ret; 85 } 86 87 ret = wait_for_completion_timeout(&ab->wow.wakeup_completed, 3 * HZ); 88 if (ret == 0) { 89 ath11k_warn(ab, "timed out while waiting for wow wakeup completion\n"); 90 return -ETIMEDOUT; 91 } 92 93 return 0; 94 } 95 96 static int ath11k_wow_vif_cleanup(struct ath11k_vif *arvif) 97 { 98 struct ath11k *ar = arvif->ar; 99 int i, ret; 100 101 for (i = 0; i < WOW_EVENT_MAX; i++) { 102 ret = ath11k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0); 103 if (ret) { 104 ath11k_warn(ar->ab, "failed to issue wow wakeup for event %s on vdev %i: %d\n", 105 wow_wakeup_event(i), arvif->vdev_id, ret); 106 return ret; 107 } 108 } 109 110 for (i = 0; i < ar->wow.max_num_patterns; i++) { 111 ret = ath11k_wmi_wow_del_pattern(ar, arvif->vdev_id, i); 112 if (ret) { 113 ath11k_warn(ar->ab, "failed to delete wow pattern %d for vdev %i: %d\n", 114 i, arvif->vdev_id, ret); 115 return ret; 116 } 117 } 118 119 return 0; 120 } 121 122 static int ath11k_wow_cleanup(struct ath11k *ar) 123 { 124 struct ath11k_vif *arvif; 125 int ret; 126 127 lockdep_assert_held(&ar->conf_mutex); 128 129 list_for_each_entry(arvif, &ar->arvifs, list) { 130 ret = ath11k_wow_vif_cleanup(arvif); 131 if (ret) { 132 ath11k_warn(ar->ab, "failed to clean wow wakeups on vdev %i: %d\n", 133 arvif->vdev_id, ret); 134 return ret; 135 } 136 } 137 138 return 0; 139 } 140 141 /* Convert a 802.3 format to a 802.11 format. 142 * +------------+-----------+--------+----------------+ 143 * 802.3: |dest mac(6B)|src mac(6B)|type(2B)| body... | 144 * +------------+-----------+--------+----------------+ 145 * |__ |_______ |____________ |________ 146 * | | | | 147 * +--+------------+----+-----------+---------------+-----------+ 148 * 802.11: |4B|dest mac(6B)| 6B |src mac(6B)| 8B |type(2B)| body... | 149 * +--+------------+----+-----------+---------------+-----------+ 150 */ 151 static void ath11k_wow_convert_8023_to_80211(struct cfg80211_pkt_pattern *new, 152 const struct cfg80211_pkt_pattern *old) 153 { 154 u8 hdr_8023_pattern[ETH_HLEN] = {}; 155 u8 hdr_8023_bit_mask[ETH_HLEN] = {}; 156 u8 hdr_80211_pattern[WOW_HDR_LEN] = {}; 157 u8 hdr_80211_bit_mask[WOW_HDR_LEN] = {}; 158 159 int total_len = old->pkt_offset + old->pattern_len; 160 int hdr_80211_end_offset; 161 162 struct ieee80211_hdr_3addr *new_hdr_pattern = 163 (struct ieee80211_hdr_3addr *)hdr_80211_pattern; 164 struct ieee80211_hdr_3addr *new_hdr_mask = 165 (struct ieee80211_hdr_3addr *)hdr_80211_bit_mask; 166 struct ethhdr *old_hdr_pattern = (struct ethhdr *)hdr_8023_pattern; 167 struct ethhdr *old_hdr_mask = (struct ethhdr *)hdr_8023_bit_mask; 168 int hdr_len = sizeof(*new_hdr_pattern); 169 170 struct rfc1042_hdr *new_rfc_pattern = 171 (struct rfc1042_hdr *)(hdr_80211_pattern + hdr_len); 172 struct rfc1042_hdr *new_rfc_mask = 173 (struct rfc1042_hdr *)(hdr_80211_bit_mask + hdr_len); 174 int rfc_len = sizeof(*new_rfc_pattern); 175 176 memcpy(hdr_8023_pattern + old->pkt_offset, 177 old->pattern, ETH_HLEN - old->pkt_offset); 178 memcpy(hdr_8023_bit_mask + old->pkt_offset, 179 old->mask, ETH_HLEN - old->pkt_offset); 180 181 /* Copy destination address */ 182 memcpy(new_hdr_pattern->addr1, old_hdr_pattern->h_dest, ETH_ALEN); 183 memcpy(new_hdr_mask->addr1, old_hdr_mask->h_dest, ETH_ALEN); 184 185 /* Copy source address */ 186 memcpy(new_hdr_pattern->addr3, old_hdr_pattern->h_source, ETH_ALEN); 187 memcpy(new_hdr_mask->addr3, old_hdr_mask->h_source, ETH_ALEN); 188 189 /* Copy logic link type */ 190 memcpy(&new_rfc_pattern->snap_type, 191 &old_hdr_pattern->h_proto, 192 sizeof(old_hdr_pattern->h_proto)); 193 memcpy(&new_rfc_mask->snap_type, 194 &old_hdr_mask->h_proto, 195 sizeof(old_hdr_mask->h_proto)); 196 197 /* Compute new pkt_offset */ 198 if (old->pkt_offset < ETH_ALEN) 199 new->pkt_offset = old->pkt_offset + 200 offsetof(struct ieee80211_hdr_3addr, addr1); 201 else if (old->pkt_offset < offsetof(struct ethhdr, h_proto)) 202 new->pkt_offset = old->pkt_offset + 203 offsetof(struct ieee80211_hdr_3addr, addr3) - 204 offsetof(struct ethhdr, h_source); 205 else 206 new->pkt_offset = old->pkt_offset + hdr_len + rfc_len - ETH_HLEN; 207 208 /* Compute new hdr end offset */ 209 if (total_len > ETH_HLEN) 210 hdr_80211_end_offset = hdr_len + rfc_len; 211 else if (total_len > offsetof(struct ethhdr, h_proto)) 212 hdr_80211_end_offset = hdr_len + rfc_len + total_len - ETH_HLEN; 213 else if (total_len > ETH_ALEN) 214 hdr_80211_end_offset = total_len - ETH_ALEN + 215 offsetof(struct ieee80211_hdr_3addr, addr3); 216 else 217 hdr_80211_end_offset = total_len + 218 offsetof(struct ieee80211_hdr_3addr, addr1); 219 220 new->pattern_len = hdr_80211_end_offset - new->pkt_offset; 221 222 memcpy((u8 *)new->pattern, 223 hdr_80211_pattern + new->pkt_offset, 224 new->pattern_len); 225 memcpy((u8 *)new->mask, 226 hdr_80211_bit_mask + new->pkt_offset, 227 new->pattern_len); 228 229 if (total_len > ETH_HLEN) { 230 /* Copy frame body */ 231 memcpy((u8 *)new->pattern + new->pattern_len, 232 (void *)old->pattern + ETH_HLEN - old->pkt_offset, 233 total_len - ETH_HLEN); 234 memcpy((u8 *)new->mask + new->pattern_len, 235 (void *)old->mask + ETH_HLEN - old->pkt_offset, 236 total_len - ETH_HLEN); 237 238 new->pattern_len += total_len - ETH_HLEN; 239 } 240 } 241 242 static int ath11k_wmi_pno_check_and_convert(struct ath11k *ar, u32 vdev_id, 243 struct cfg80211_sched_scan_request *nd_config, 244 struct wmi_pno_scan_req *pno) 245 { 246 int i, j; 247 u8 ssid_len; 248 249 pno->enable = 1; 250 pno->vdev_id = vdev_id; 251 pno->uc_networks_count = nd_config->n_match_sets; 252 253 if (!pno->uc_networks_count || 254 pno->uc_networks_count > WMI_PNO_MAX_SUPP_NETWORKS) 255 return -EINVAL; 256 257 if (nd_config->n_channels > WMI_PNO_MAX_NETW_CHANNELS_EX) 258 return -EINVAL; 259 260 /* Filling per profile params */ 261 for (i = 0; i < pno->uc_networks_count; i++) { 262 ssid_len = nd_config->match_sets[i].ssid.ssid_len; 263 264 if (ssid_len == 0 || ssid_len > 32) 265 return -EINVAL; 266 267 pno->a_networks[i].ssid.ssid_len = ssid_len; 268 269 memcpy(pno->a_networks[i].ssid.ssid, 270 nd_config->match_sets[i].ssid.ssid, 271 nd_config->match_sets[i].ssid.ssid_len); 272 pno->a_networks[i].authentication = 0; 273 pno->a_networks[i].encryption = 0; 274 pno->a_networks[i].bcast_nw_type = 0; 275 276 /* Copying list of valid channel into request */ 277 pno->a_networks[i].channel_count = nd_config->n_channels; 278 pno->a_networks[i].rssi_threshold = nd_config->match_sets[i].rssi_thold; 279 280 for (j = 0; j < nd_config->n_channels; j++) { 281 pno->a_networks[i].channels[j] = 282 nd_config->channels[j]->center_freq; 283 } 284 } 285 286 /* set scan to passive if no SSIDs are specified in the request */ 287 if (nd_config->n_ssids == 0) 288 pno->do_passive_scan = true; 289 else 290 pno->do_passive_scan = false; 291 292 for (i = 0; i < nd_config->n_ssids; i++) { 293 j = 0; 294 while (j < pno->uc_networks_count) { 295 if (pno->a_networks[j].ssid.ssid_len == 296 nd_config->ssids[i].ssid_len && 297 (memcmp(pno->a_networks[j].ssid.ssid, 298 nd_config->ssids[i].ssid, 299 pno->a_networks[j].ssid.ssid_len) == 0)) { 300 pno->a_networks[j].bcast_nw_type = BCAST_HIDDEN; 301 break; 302 } 303 j++; 304 } 305 } 306 307 if (nd_config->n_scan_plans == 2) { 308 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC; 309 pno->fast_scan_max_cycles = nd_config->scan_plans[0].iterations; 310 pno->slow_scan_period = 311 nd_config->scan_plans[1].interval * MSEC_PER_SEC; 312 } else if (nd_config->n_scan_plans == 1) { 313 pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC; 314 pno->fast_scan_max_cycles = 1; 315 pno->slow_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC; 316 } else { 317 ath11k_warn(ar->ab, "Invalid number of scan plans %d !!", 318 nd_config->n_scan_plans); 319 } 320 321 if (nd_config->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 322 /* enable mac randomization */ 323 pno->enable_pno_scan_randomization = 1; 324 memcpy(pno->mac_addr, nd_config->mac_addr, ETH_ALEN); 325 memcpy(pno->mac_addr_mask, nd_config->mac_addr_mask, ETH_ALEN); 326 } 327 328 pno->delay_start_time = nd_config->delay; 329 330 /* Current FW does not support min-max range for dwell time */ 331 pno->active_max_time = WMI_ACTIVE_MAX_CHANNEL_TIME; 332 pno->passive_max_time = WMI_PASSIVE_MAX_CHANNEL_TIME; 333 334 return 0; 335 } 336 337 static int ath11k_vif_wow_set_wakeups(struct ath11k_vif *arvif, 338 struct cfg80211_wowlan *wowlan) 339 { 340 int ret, i; 341 unsigned long wow_mask = 0; 342 struct ath11k *ar = arvif->ar; 343 const struct cfg80211_pkt_pattern *patterns = wowlan->patterns; 344 int pattern_id = 0; 345 346 /* Setup requested WOW features */ 347 switch (arvif->vdev_type) { 348 case WMI_VDEV_TYPE_IBSS: 349 __set_bit(WOW_BEACON_EVENT, &wow_mask); 350 fallthrough; 351 case WMI_VDEV_TYPE_AP: 352 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask); 353 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask); 354 __set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask); 355 __set_bit(WOW_AUTH_REQ_EVENT, &wow_mask); 356 __set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask); 357 __set_bit(WOW_HTT_EVENT, &wow_mask); 358 __set_bit(WOW_RA_MATCH_EVENT, &wow_mask); 359 break; 360 case WMI_VDEV_TYPE_STA: 361 if (wowlan->disconnect) { 362 __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask); 363 __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask); 364 __set_bit(WOW_BMISS_EVENT, &wow_mask); 365 __set_bit(WOW_CSA_IE_EVENT, &wow_mask); 366 } 367 368 if (wowlan->magic_pkt) 369 __set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask); 370 371 if (wowlan->nd_config) { 372 struct wmi_pno_scan_req *pno; 373 int ret; 374 375 pno = kzalloc(sizeof(*pno), GFP_KERNEL); 376 if (!pno) 377 return -ENOMEM; 378 379 ar->nlo_enabled = true; 380 381 ret = ath11k_wmi_pno_check_and_convert(ar, arvif->vdev_id, 382 wowlan->nd_config, pno); 383 if (!ret) { 384 ath11k_wmi_wow_config_pno(ar, arvif->vdev_id, pno); 385 __set_bit(WOW_NLO_DETECTED_EVENT, &wow_mask); 386 } 387 388 kfree(pno); 389 } 390 break; 391 default: 392 break; 393 } 394 395 for (i = 0; i < wowlan->n_patterns; i++) { 396 u8 bitmask[WOW_MAX_PATTERN_SIZE] = {}; 397 u8 ath_pattern[WOW_MAX_PATTERN_SIZE] = {}; 398 u8 ath_bitmask[WOW_MAX_PATTERN_SIZE] = {}; 399 struct cfg80211_pkt_pattern new_pattern = {}; 400 struct cfg80211_pkt_pattern old_pattern = patterns[i]; 401 int j; 402 403 new_pattern.pattern = ath_pattern; 404 new_pattern.mask = ath_bitmask; 405 if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE) 406 continue; 407 /* convert bytemask to bitmask */ 408 for (j = 0; j < patterns[i].pattern_len; j++) 409 if (patterns[i].mask[j / 8] & BIT(j % 8)) 410 bitmask[j] = 0xff; 411 old_pattern.mask = bitmask; 412 413 if (ar->wmi->wmi_ab->wlan_resource_config.rx_decap_mode == 414 ATH11K_HW_TXRX_NATIVE_WIFI) { 415 if (patterns[i].pkt_offset < ETH_HLEN) { 416 u8 pattern_ext[WOW_MAX_PATTERN_SIZE] = {}; 417 418 memcpy(pattern_ext, old_pattern.pattern, 419 old_pattern.pattern_len); 420 old_pattern.pattern = pattern_ext; 421 ath11k_wow_convert_8023_to_80211(&new_pattern, 422 &old_pattern); 423 } else { 424 new_pattern = old_pattern; 425 new_pattern.pkt_offset += WOW_HDR_LEN - ETH_HLEN; 426 } 427 } 428 429 if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE)) 430 return -EINVAL; 431 432 ret = ath11k_wmi_wow_add_pattern(ar, arvif->vdev_id, 433 pattern_id, 434 new_pattern.pattern, 435 new_pattern.mask, 436 new_pattern.pattern_len, 437 new_pattern.pkt_offset); 438 if (ret) { 439 ath11k_warn(ar->ab, "failed to add pattern %i to vdev %i: %d\n", 440 pattern_id, 441 arvif->vdev_id, ret); 442 return ret; 443 } 444 445 pattern_id++; 446 __set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask); 447 } 448 449 for (i = 0; i < WOW_EVENT_MAX; i++) { 450 if (!test_bit(i, &wow_mask)) 451 continue; 452 ret = ath11k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1); 453 if (ret) { 454 ath11k_warn(ar->ab, "failed to enable wakeup event %s on vdev %i: %d\n", 455 wow_wakeup_event(i), arvif->vdev_id, ret); 456 return ret; 457 } 458 } 459 460 return 0; 461 } 462 463 static int ath11k_wow_set_wakeups(struct ath11k *ar, 464 struct cfg80211_wowlan *wowlan) 465 { 466 struct ath11k_vif *arvif; 467 int ret; 468 469 lockdep_assert_held(&ar->conf_mutex); 470 471 list_for_each_entry(arvif, &ar->arvifs, list) { 472 ret = ath11k_vif_wow_set_wakeups(arvif, wowlan); 473 if (ret) { 474 ath11k_warn(ar->ab, "failed to set wow wakeups on vdev %i: %d\n", 475 arvif->vdev_id, ret); 476 return ret; 477 } 478 } 479 480 return 0; 481 } 482 483 static int ath11k_vif_wow_clean_nlo(struct ath11k_vif *arvif) 484 { 485 int ret = 0; 486 struct ath11k *ar = arvif->ar; 487 488 switch (arvif->vdev_type) { 489 case WMI_VDEV_TYPE_STA: 490 if (ar->nlo_enabled) { 491 struct wmi_pno_scan_req *pno; 492 493 pno = kzalloc(sizeof(*pno), GFP_KERNEL); 494 if (!pno) 495 return -ENOMEM; 496 497 pno->enable = 0; 498 ar->nlo_enabled = false; 499 ret = ath11k_wmi_wow_config_pno(ar, arvif->vdev_id, pno); 500 kfree(pno); 501 } 502 break; 503 default: 504 break; 505 } 506 return ret; 507 } 508 509 static int ath11k_wow_nlo_cleanup(struct ath11k *ar) 510 { 511 struct ath11k_vif *arvif; 512 int ret; 513 514 lockdep_assert_held(&ar->conf_mutex); 515 516 list_for_each_entry(arvif, &ar->arvifs, list) { 517 ret = ath11k_vif_wow_clean_nlo(arvif); 518 if (ret) { 519 ath11k_warn(ar->ab, "failed to clean nlo settings on vdev %i: %d\n", 520 arvif->vdev_id, ret); 521 return ret; 522 } 523 } 524 525 return 0; 526 } 527 528 static int ath11k_wow_set_hw_filter(struct ath11k *ar) 529 { 530 struct ath11k_vif *arvif; 531 u32 bitmap; 532 int ret; 533 534 lockdep_assert_held(&ar->conf_mutex); 535 536 list_for_each_entry(arvif, &ar->arvifs, list) { 537 bitmap = WMI_HW_DATA_FILTER_DROP_NON_ICMPV6_MC | 538 WMI_HW_DATA_FILTER_DROP_NON_ARP_BC; 539 ret = ath11k_wmi_hw_data_filter_cmd(ar, arvif->vdev_id, 540 bitmap, 541 true); 542 if (ret) { 543 ath11k_warn(ar->ab, "failed to set hw data filter on vdev %i: %d\n", 544 arvif->vdev_id, ret); 545 return ret; 546 } 547 } 548 549 return 0; 550 } 551 552 static int ath11k_wow_clear_hw_filter(struct ath11k *ar) 553 { 554 struct ath11k_vif *arvif; 555 int ret; 556 557 lockdep_assert_held(&ar->conf_mutex); 558 559 list_for_each_entry(arvif, &ar->arvifs, list) { 560 ret = ath11k_wmi_hw_data_filter_cmd(ar, arvif->vdev_id, 0, false); 561 562 if (ret) { 563 ath11k_warn(ar->ab, "failed to clear hw data filter on vdev %i: %d\n", 564 arvif->vdev_id, ret); 565 return ret; 566 } 567 } 568 569 return 0; 570 } 571 572 static int ath11k_wow_arp_ns_offload(struct ath11k *ar, bool enable) 573 { 574 struct ath11k_vif *arvif; 575 int ret; 576 577 lockdep_assert_held(&ar->conf_mutex); 578 579 list_for_each_entry(arvif, &ar->arvifs, list) { 580 if (arvif->vdev_type != WMI_VDEV_TYPE_STA) 581 continue; 582 583 ret = ath11k_wmi_arp_ns_offload(ar, arvif, enable); 584 585 if (ret) { 586 ath11k_warn(ar->ab, "failed to set arp ns offload vdev %i: enable %d, ret %d\n", 587 arvif->vdev_id, enable, ret); 588 return ret; 589 } 590 } 591 592 return 0; 593 } 594 595 static int ath11k_gtk_rekey_offload(struct ath11k *ar, bool enable) 596 { 597 struct ath11k_vif *arvif; 598 int ret; 599 600 lockdep_assert_held(&ar->conf_mutex); 601 602 list_for_each_entry(arvif, &ar->arvifs, list) { 603 if (arvif->vdev_type != WMI_VDEV_TYPE_STA || 604 !arvif->is_up || 605 !arvif->rekey_data.enable_offload) 606 continue; 607 608 /* get rekey info before disable rekey offload */ 609 if (!enable) { 610 ret = ath11k_wmi_gtk_rekey_getinfo(ar, arvif); 611 if (ret) { 612 ath11k_warn(ar->ab, "failed to request rekey info vdev %i, ret %d\n", 613 arvif->vdev_id, ret); 614 return ret; 615 } 616 } 617 618 ret = ath11k_wmi_gtk_rekey_offload(ar, arvif, enable); 619 620 if (ret) { 621 ath11k_warn(ar->ab, "failed to offload gtk reky vdev %i: enable %d, ret %d\n", 622 arvif->vdev_id, enable, ret); 623 return ret; 624 } 625 } 626 627 return 0; 628 } 629 630 static int ath11k_wow_protocol_offload(struct ath11k *ar, bool enable) 631 { 632 int ret; 633 634 ret = ath11k_wow_arp_ns_offload(ar, enable); 635 if (ret) { 636 ath11k_warn(ar->ab, "failed to offload ARP and NS %d %d\n", 637 enable, ret); 638 return ret; 639 } 640 641 ret = ath11k_gtk_rekey_offload(ar, enable); 642 if (ret) { 643 ath11k_warn(ar->ab, "failed to offload gtk rekey %d %d\n", 644 enable, ret); 645 return ret; 646 } 647 648 return 0; 649 } 650 651 static int ath11k_wow_set_keepalive(struct ath11k *ar, 652 enum wmi_sta_keepalive_method method, 653 u32 interval) 654 { 655 struct ath11k_vif *arvif; 656 int ret; 657 658 lockdep_assert_held(&ar->conf_mutex); 659 660 list_for_each_entry(arvif, &ar->arvifs, list) { 661 ret = ath11k_mac_vif_set_keepalive(arvif, method, interval); 662 if (ret) 663 return ret; 664 } 665 666 return 0; 667 } 668 669 int ath11k_wow_op_suspend(struct ieee80211_hw *hw, 670 struct cfg80211_wowlan *wowlan) 671 { 672 struct ath11k *ar = hw->priv; 673 int ret; 674 675 ret = ath11k_mac_wait_tx_complete(ar); 676 if (ret) { 677 ath11k_warn(ar->ab, "failed to wait tx complete: %d\n", ret); 678 return ret; 679 } 680 681 mutex_lock(&ar->conf_mutex); 682 683 ret = ath11k_dp_rx_pktlog_stop(ar->ab, true); 684 if (ret) { 685 ath11k_warn(ar->ab, 686 "failed to stop dp rx (and timer) pktlog during wow suspend: %d\n", 687 ret); 688 goto exit; 689 } 690 691 ret = ath11k_wow_cleanup(ar); 692 if (ret) { 693 ath11k_warn(ar->ab, "failed to clear wow wakeup events: %d\n", 694 ret); 695 goto exit; 696 } 697 698 ret = ath11k_wow_set_wakeups(ar, wowlan); 699 if (ret) { 700 ath11k_warn(ar->ab, "failed to set wow wakeup events: %d\n", 701 ret); 702 goto cleanup; 703 } 704 705 ret = ath11k_wow_protocol_offload(ar, true); 706 if (ret) { 707 ath11k_warn(ar->ab, "failed to set wow protocol offload events: %d\n", 708 ret); 709 goto cleanup; 710 } 711 712 ret = ath11k_wow_set_hw_filter(ar); 713 if (ret) { 714 ath11k_warn(ar->ab, "failed to set hw filter: %d\n", 715 ret); 716 goto cleanup; 717 } 718 719 ret = ath11k_wow_set_keepalive(ar, 720 WMI_STA_KEEPALIVE_METHOD_NULL_FRAME, 721 WMI_STA_KEEPALIVE_INTERVAL_DEFAULT); 722 if (ret) { 723 ath11k_warn(ar->ab, "failed to enable wow keepalive: %d\n", ret); 724 goto cleanup; 725 } 726 727 ret = ath11k_wow_enable(ar->ab); 728 if (ret) { 729 ath11k_warn(ar->ab, "failed to start wow: %d\n", ret); 730 goto cleanup; 731 } 732 733 ret = ath11k_dp_rx_pktlog_stop(ar->ab, false); 734 if (ret) { 735 ath11k_warn(ar->ab, 736 "failed to stop dp rx pktlog during wow suspend: %d\n", 737 ret); 738 goto cleanup; 739 } 740 741 ath11k_ce_stop_shadow_timers(ar->ab); 742 ath11k_dp_stop_shadow_timers(ar->ab); 743 744 ath11k_hif_irq_disable(ar->ab); 745 ath11k_hif_ce_irq_disable(ar->ab); 746 747 ret = ath11k_hif_suspend(ar->ab); 748 if (ret) { 749 ath11k_warn(ar->ab, "failed to suspend hif: %d\n", ret); 750 goto wakeup; 751 } 752 753 goto exit; 754 755 wakeup: 756 ath11k_wow_wakeup(ar->ab); 757 758 cleanup: 759 ath11k_wow_cleanup(ar); 760 761 exit: 762 mutex_unlock(&ar->conf_mutex); 763 return ret ? 1 : 0; 764 } 765 766 void ath11k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled) 767 { 768 struct ath11k *ar = hw->priv; 769 770 mutex_lock(&ar->conf_mutex); 771 device_set_wakeup_enable(ar->ab->dev, enabled); 772 mutex_unlock(&ar->conf_mutex); 773 } 774 775 int ath11k_wow_op_resume(struct ieee80211_hw *hw) 776 { 777 struct ath11k *ar = hw->priv; 778 int ret; 779 780 mutex_lock(&ar->conf_mutex); 781 782 ret = ath11k_hif_resume(ar->ab); 783 if (ret) { 784 ath11k_warn(ar->ab, "failed to resume hif: %d\n", ret); 785 goto exit; 786 } 787 788 ath11k_hif_ce_irq_enable(ar->ab); 789 ath11k_hif_irq_enable(ar->ab); 790 791 ret = ath11k_dp_rx_pktlog_start(ar->ab); 792 if (ret) { 793 ath11k_warn(ar->ab, "failed to start rx pktlog from wow: %d\n", ret); 794 goto exit; 795 } 796 797 ret = ath11k_wow_wakeup(ar->ab); 798 if (ret) { 799 ath11k_warn(ar->ab, "failed to wakeup from wow: %d\n", ret); 800 goto exit; 801 } 802 803 ret = ath11k_wow_nlo_cleanup(ar); 804 if (ret) { 805 ath11k_warn(ar->ab, "failed to cleanup nlo: %d\n", ret); 806 goto exit; 807 } 808 809 ret = ath11k_wow_clear_hw_filter(ar); 810 if (ret) { 811 ath11k_warn(ar->ab, "failed to clear hw filter: %d\n", ret); 812 goto exit; 813 } 814 815 ret = ath11k_wow_protocol_offload(ar, false); 816 if (ret) { 817 ath11k_warn(ar->ab, "failed to clear wow protocol offload events: %d\n", 818 ret); 819 goto exit; 820 } 821 822 ret = ath11k_wow_set_keepalive(ar, 823 WMI_STA_KEEPALIVE_METHOD_NULL_FRAME, 824 WMI_STA_KEEPALIVE_INTERVAL_DISABLE); 825 if (ret) { 826 ath11k_warn(ar->ab, "failed to disable wow keepalive: %d\n", ret); 827 goto exit; 828 } 829 830 exit: 831 if (ret) { 832 switch (ar->state) { 833 case ATH11K_STATE_ON: 834 ar->state = ATH11K_STATE_RESTARTING; 835 ret = 1; 836 break; 837 case ATH11K_STATE_OFF: 838 case ATH11K_STATE_RESTARTING: 839 case ATH11K_STATE_RESTARTED: 840 case ATH11K_STATE_WEDGED: 841 ath11k_warn(ar->ab, "encountered unexpected device state %d on resume, cannot recover\n", 842 ar->state); 843 ret = -EIO; 844 break; 845 } 846 } 847 848 mutex_unlock(&ar->conf_mutex); 849 return ret; 850 } 851 852 int ath11k_wow_init(struct ath11k *ar) 853 { 854 if (!test_bit(WMI_TLV_SERVICE_WOW, ar->wmi->wmi_ab->svc_map)) 855 return 0; 856 857 ar->wow.wowlan_support = ath11k_wowlan_support; 858 859 if (ar->wmi->wmi_ab->wlan_resource_config.rx_decap_mode == 860 ATH11K_HW_TXRX_NATIVE_WIFI) { 861 ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE; 862 ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE; 863 } 864 865 if (test_bit(WMI_TLV_SERVICE_NLO, ar->wmi->wmi_ab->svc_map)) { 866 ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT; 867 ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS; 868 } 869 870 ar->wow.max_num_patterns = ATH11K_WOW_PATTERNS; 871 ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns; 872 ar->hw->wiphy->wowlan = &ar->wow.wowlan_support; 873 874 device_set_wakeup_capable(ar->ab->dev, true); 875 876 return 0; 877 } 878