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1// SPDX-License-Identifier: BSD-3-Clause-Clear2/*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 *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 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 with48 * ATH12K_HTC_MSG_NACK_SUSPEND message, asking host to try again49 * 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_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_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 */159static void160ath12k_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 263static int264ath12k_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 else312 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_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->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_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 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_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 533static 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 555static 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 581static 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 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_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 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_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 732static 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 767static 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 802static 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 823static 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 841int 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 909wakeup:910 ath12k_wow_wakeup(ar);911 912cleanup:913 ath12k_wow_cleanup(ar);914 915exit:916 mutex_unlock(&ar->conf_mutex);917 return ret ? 1 : 0;918}919 920void 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 930int 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 980exit: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 1002int 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