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 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 32 static inline bool ath12k_wow_is_p2p_vdev(struct ath12k_vif *arvif) 33 { 34 return (arvif->vdev_subtype == WMI_VDEV_SUBTYPE_P2P_DEVICE || 35 arvif->vdev_subtype == WMI_VDEV_SUBTYPE_P2P_CLIENT || 36 arvif->vdev_subtype == WMI_VDEV_SUBTYPE_P2P_GO); 37 } 38 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 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 } 103 104 static int ath12k_wow_vif_cleanup(struct ath12k_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 } 129 130 static int ath12k_wow_cleanup(struct ath12k *ar) 131 { 132 struct ath12k_vif *arvif; 133 int ret; 134 135 lockdep_assert_held(&ar->conf_mutex); 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 */ 159 static void 160 ath12k_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 (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 } 262 263 static int 264 ath12k_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 } 356 357 static int ath12k_wow_vif_set_wakeups(struct ath12k_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; 365 366 /* Setup requested WOW features */ 367 switch (arvif->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 (i = 0; i < eth_pattern->pattern_len; i++) 435 if (eth_pattern->mask[i / 8] & BIT(i % 8)) 436 new_pattern.bytemask[i] = 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 } 472 473 static int ath12k_wow_set_wakeups(struct ath12k *ar, 474 struct cfg80211_wowlan *wowlan) 475 { 476 struct ath12k_vif *arvif; 477 int ret; 478 479 lockdep_assert_held(&ar->conf_mutex); 480 481 list_for_each_entry(arvif, &ar->arvifs, list) { 482 if (ath12k_wow_is_p2p_vdev(arvif)) 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 } 494 495 static 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; 515 516 out: 517 kfree(pno); 518 return ret; 519 } 520 521 static int ath12k_wow_vif_clean_nlo(struct ath12k_vif *arvif) 522 { 523 struct ath12k *ar = arvif->ar; 524 525 switch (arvif->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 } 532 533 static int ath12k_wow_nlo_cleanup(struct ath12k *ar) 534 { 535 struct ath12k_vif *arvif; 536 int ret; 537 538 lockdep_assert_held(&ar->conf_mutex); 539 540 list_for_each_entry(arvif, &ar->arvifs, list) { 541 if (ath12k_wow_is_p2p_vdev(arvif)) 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 } 554 555 static int ath12k_wow_set_hw_filter(struct ath12k *ar) 556 { 557 struct wmi_hw_data_filter_arg arg; 558 struct ath12k_vif *arvif; 559 int ret; 560 561 lockdep_assert_held(&ar->conf_mutex); 562 563 list_for_each_entry(arvif, &ar->arvifs, list) { 564 if (arvif->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 } 580 581 static int ath12k_wow_clear_hw_filter(struct ath12k *ar) 582 { 583 struct wmi_hw_data_filter_arg arg; 584 struct ath12k_vif *arvif; 585 int ret; 586 587 lockdep_assert_held(&ar->conf_mutex); 588 589 list_for_each_entry(arvif, &ar->arvifs, list) { 590 if (arvif->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 } 607 608 static 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 } 628 629 static void ath12k_wow_prepare_ns_offload(struct ath12k_vif *arvif, 630 struct wmi_arp_ns_offload_arg *offload) 631 { 632 struct net_device *ndev = ieee80211_vif_to_wdev(arvif->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(); 703 704 unlock: 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 } 712 713 static void ath12k_wow_prepare_arp_offload(struct ath12k_vif *arvif, 714 struct wmi_arp_ns_offload_arg *offload) 715 { 716 struct ieee80211_vif *vif = arvif->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 } 731 732 static int ath12k_wow_arp_ns_offload(struct ath12k *ar, bool enable) 733 { 734 struct wmi_arp_ns_offload_arg *offload; 735 struct ath12k_vif *arvif; 736 int ret; 737 738 lockdep_assert_held(&ar->conf_mutex); 739 740 offload = kmalloc(sizeof(*offload), GFP_KERNEL); 741 if (!offload) 742 return -ENOMEM; 743 744 list_for_each_entry(arvif, &ar->arvifs, list) { 745 if (arvif->vdev_type != WMI_VDEV_TYPE_STA) 746 continue; 747 748 memset(offload, 0, sizeof(*offload)); 749 750 memcpy(offload->mac_addr, arvif->vif->addr, ETH_ALEN); 751 ath12k_wow_prepare_ns_offload(arvif, offload); 752 ath12k_wow_prepare_arp_offload(arvif, offload); 753 754 ret = ath12k_wmi_arp_ns_offload(ar, arvif, offload, enable); 755 if (ret) { 756 ath12k_warn(ar->ab, "failed to set arp ns offload vdev %i: enable %d, ret %d\n", 757 arvif->vdev_id, enable, ret); 758 return ret; 759 } 760 } 761 762 kfree(offload); 763 764 return 0; 765 } 766 767 static int ath12k_gtk_rekey_offload(struct ath12k *ar, bool enable) 768 { 769 struct ath12k_vif *arvif; 770 int ret; 771 772 lockdep_assert_held(&ar->conf_mutex); 773 774 list_for_each_entry(arvif, &ar->arvifs, list) { 775 if (arvif->vdev_type != WMI_VDEV_TYPE_STA || 776 !arvif->is_up || 777 !arvif->rekey_data.enable_offload) 778 continue; 779 780 /* get rekey info before disable rekey offload */ 781 if (!enable) { 782 ret = ath12k_wmi_gtk_rekey_getinfo(ar, arvif); 783 if (ret) { 784 ath12k_warn(ar->ab, "failed to request rekey info vdev %i, ret %d\n", 785 arvif->vdev_id, ret); 786 return ret; 787 } 788 } 789 790 ret = ath12k_wmi_gtk_rekey_offload(ar, arvif, enable); 791 792 if (ret) { 793 ath12k_warn(ar->ab, "failed to offload gtk reky vdev %i: enable %d, ret %d\n", 794 arvif->vdev_id, enable, ret); 795 return ret; 796 } 797 } 798 799 return 0; 800 } 801 802 static int ath12k_wow_protocol_offload(struct ath12k *ar, bool enable) 803 { 804 int ret; 805 806 ret = ath12k_wow_arp_ns_offload(ar, enable); 807 if (ret) { 808 ath12k_warn(ar->ab, "failed to offload ARP and NS %d %d\n", 809 enable, ret); 810 return ret; 811 } 812 813 ret = ath12k_gtk_rekey_offload(ar, enable); 814 if (ret) { 815 ath12k_warn(ar->ab, "failed to offload gtk rekey %d %d\n", 816 enable, ret); 817 return ret; 818 } 819 820 return 0; 821 } 822 823 static int ath12k_wow_set_keepalive(struct ath12k *ar, 824 enum wmi_sta_keepalive_method method, 825 u32 interval) 826 { 827 struct ath12k_vif *arvif; 828 int ret; 829 830 lockdep_assert_held(&ar->conf_mutex); 831 832 list_for_each_entry(arvif, &ar->arvifs, list) { 833 ret = ath12k_mac_vif_set_keepalive(arvif, method, interval); 834 if (ret) 835 return ret; 836 } 837 838 return 0; 839 } 840 841 int ath12k_wow_op_suspend(struct ieee80211_hw *hw, 842 struct cfg80211_wowlan *wowlan) 843 { 844 struct ath12k_hw *ah = ath12k_hw_to_ah(hw); 845 struct ath12k *ar = ath12k_ah_to_ar(ah, 0); 846 int ret; 847 848 mutex_lock(&ar->conf_mutex); 849 850 ret = ath12k_wow_cleanup(ar); 851 if (ret) { 852 ath12k_warn(ar->ab, "failed to clear wow wakeup events: %d\n", 853 ret); 854 goto exit; 855 } 856 857 ret = ath12k_wow_set_wakeups(ar, wowlan); 858 if (ret) { 859 ath12k_warn(ar->ab, "failed to set wow wakeup events: %d\n", 860 ret); 861 goto cleanup; 862 } 863 864 ret = ath12k_wow_protocol_offload(ar, true); 865 if (ret) { 866 ath12k_warn(ar->ab, "failed to set wow protocol offload events: %d\n", 867 ret); 868 goto cleanup; 869 } 870 871 ret = ath12k_mac_wait_tx_complete(ar); 872 if (ret) { 873 ath12k_warn(ar->ab, "failed to wait tx complete: %d\n", ret); 874 goto cleanup; 875 } 876 877 ret = ath12k_wow_set_hw_filter(ar); 878 if (ret) { 879 ath12k_warn(ar->ab, "failed to set hw filter: %d\n", 880 ret); 881 goto cleanup; 882 } 883 884 ret = ath12k_wow_set_keepalive(ar, 885 WMI_STA_KEEPALIVE_METHOD_NULL_FRAME, 886 WMI_STA_KEEPALIVE_INTERVAL_DEFAULT); 887 if (ret) { 888 ath12k_warn(ar->ab, "failed to enable wow keepalive: %d\n", ret); 889 goto cleanup; 890 } 891 892 ret = ath12k_wow_enable(ar); 893 if (ret) { 894 ath12k_warn(ar->ab, "failed to start wow: %d\n", ret); 895 goto cleanup; 896 } 897 898 ath12k_hif_irq_disable(ar->ab); 899 ath12k_hif_ce_irq_disable(ar->ab); 900 901 ret = ath12k_hif_suspend(ar->ab); 902 if (ret) { 903 ath12k_warn(ar->ab, "failed to suspend hif: %d\n", ret); 904 goto wakeup; 905 } 906 907 goto exit; 908 909 wakeup: 910 ath12k_wow_wakeup(ar); 911 912 cleanup: 913 ath12k_wow_cleanup(ar); 914 915 exit: 916 mutex_unlock(&ar->conf_mutex); 917 return ret ? 1 : 0; 918 } 919 920 void ath12k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled) 921 { 922 struct ath12k_hw *ah = ath12k_hw_to_ah(hw); 923 struct ath12k *ar = ath12k_ah_to_ar(ah, 0); 924 925 mutex_lock(&ar->conf_mutex); 926 device_set_wakeup_enable(ar->ab->dev, enabled); 927 mutex_unlock(&ar->conf_mutex); 928 } 929 930 int ath12k_wow_op_resume(struct ieee80211_hw *hw) 931 { 932 struct ath12k_hw *ah = ath12k_hw_to_ah(hw); 933 struct ath12k *ar = ath12k_ah_to_ar(ah, 0); 934 int ret; 935 936 mutex_lock(&ar->conf_mutex); 937 938 ret = ath12k_hif_resume(ar->ab); 939 if (ret) { 940 ath12k_warn(ar->ab, "failed to resume hif: %d\n", ret); 941 goto exit; 942 } 943 944 ath12k_hif_ce_irq_enable(ar->ab); 945 ath12k_hif_irq_enable(ar->ab); 946 947 ret = ath12k_wow_wakeup(ar); 948 if (ret) { 949 ath12k_warn(ar->ab, "failed to wakeup from wow: %d\n", ret); 950 goto exit; 951 } 952 953 ret = ath12k_wow_nlo_cleanup(ar); 954 if (ret) { 955 ath12k_warn(ar->ab, "failed to cleanup nlo: %d\n", ret); 956 goto exit; 957 } 958 959 ret = ath12k_wow_clear_hw_filter(ar); 960 if (ret) { 961 ath12k_warn(ar->ab, "failed to clear hw filter: %d\n", ret); 962 goto exit; 963 } 964 965 ret = ath12k_wow_protocol_offload(ar, false); 966 if (ret) { 967 ath12k_warn(ar->ab, "failed to clear wow protocol offload events: %d\n", 968 ret); 969 goto exit; 970 } 971 972 ret = ath12k_wow_set_keepalive(ar, 973 WMI_STA_KEEPALIVE_METHOD_NULL_FRAME, 974 WMI_STA_KEEPALIVE_INTERVAL_DISABLE); 975 if (ret) { 976 ath12k_warn(ar->ab, "failed to disable wow keepalive: %d\n", ret); 977 goto exit; 978 } 979 980 exit: 981 if (ret) { 982 switch (ah->state) { 983 case ATH12K_HW_STATE_ON: 984 ah->state = ATH12K_HW_STATE_RESTARTING; 985 ret = 1; 986 break; 987 case ATH12K_HW_STATE_OFF: 988 case ATH12K_HW_STATE_RESTARTING: 989 case ATH12K_HW_STATE_RESTARTED: 990 case ATH12K_HW_STATE_WEDGED: 991 ath12k_warn(ar->ab, "encountered unexpected device state %d on resume, cannot recover\n", 992 ah->state); 993 ret = -EIO; 994 break; 995 } 996 } 997 998 mutex_unlock(&ar->conf_mutex); 999 return ret; 1000 } 1001 1002 int ath12k_wow_init(struct ath12k *ar) 1003 { 1004 if (!test_bit(WMI_TLV_SERVICE_WOW, ar->wmi->wmi_ab->svc_map)) 1005 return 0; 1006 1007 ar->wow.wowlan_support = ath12k_wowlan_support; 1008 1009 if (ar->ab->wow.wmi_conf_rx_decap_mode == ATH12K_HW_TXRX_NATIVE_WIFI) { 1010 ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE; 1011 ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE; 1012 } 1013 1014 if (test_bit(WMI_TLV_SERVICE_NLO, ar->wmi->wmi_ab->svc_map)) { 1015 ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT; 1016 ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS; 1017 } 1018 1019 ar->wow.max_num_patterns = ATH12K_WOW_PATTERNS; 1020 ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns; 1021 ar->ah->hw->wiphy->wowlan = &ar->wow.wowlan_support; 1022 1023 device_set_wakeup_capable(ar->ab->dev, true); 1024 1025 return 0; 1026 } 1027