diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath12k/wow.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath12k/wow.c | 1026 |
1 files changed, 1026 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath12k/wow.c b/drivers/net/wireless/ath/ath12k/wow.c new file mode 100644 index 000000000000..bead19db2c9a --- /dev/null +++ b/drivers/net/wireless/ath/ath12k/wow.c @@ -0,0 +1,1026 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* + * Copyright (c) 2020 The Linux Foundation. All rights reserved. + * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include <linux/delay.h> +#include <linux/inetdevice.h> +#include <net/addrconf.h> +#include <net/if_inet6.h> +#include <net/ipv6.h> + +#include "mac.h" + +#include <net/mac80211.h> +#include "core.h" +#include "hif.h" +#include "debug.h" +#include "wmi.h" +#include "wow.h" + +static const struct wiphy_wowlan_support ath12k_wowlan_support = { + .flags = WIPHY_WOWLAN_DISCONNECT | + WIPHY_WOWLAN_MAGIC_PKT | + WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | + WIPHY_WOWLAN_GTK_REKEY_FAILURE, + .pattern_min_len = WOW_MIN_PATTERN_SIZE, + .pattern_max_len = WOW_MAX_PATTERN_SIZE, + .max_pkt_offset = WOW_MAX_PKT_OFFSET, +}; + +static inline bool ath12k_wow_is_p2p_vdev(struct ath12k_vif *arvif) +{ + return (arvif->vdev_subtype == WMI_VDEV_SUBTYPE_P2P_DEVICE || + arvif->vdev_subtype == WMI_VDEV_SUBTYPE_P2P_CLIENT || + arvif->vdev_subtype == WMI_VDEV_SUBTYPE_P2P_GO); +} + +int ath12k_wow_enable(struct ath12k *ar) +{ + struct ath12k_base *ab = ar->ab; + int i, ret; + + clear_bit(ATH12K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags); + + /* The firmware might be busy and it can not enter WoW immediately. + * In that case firmware notifies host with + * ATH12K_HTC_MSG_NACK_SUSPEND message, asking host to try again + * later. Per the firmware team there could be up to 10 loops. + */ + for (i = 0; i < ATH12K_WOW_RETRY_NUM; i++) { + reinit_completion(&ab->htc_suspend); + + ret = ath12k_wmi_wow_enable(ar); + if (ret) { + ath12k_warn(ab, "failed to issue wow enable: %d\n", ret); + return ret; + } + + ret = wait_for_completion_timeout(&ab->htc_suspend, 3 * HZ); + if (ret == 0) { + ath12k_warn(ab, + "timed out while waiting for htc suspend completion\n"); + return -ETIMEDOUT; + } + + if (test_bit(ATH12K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags)) + /* success, suspend complete received */ + return 0; + + ath12k_warn(ab, "htc suspend not complete, retrying (try %d)\n", + i); + msleep(ATH12K_WOW_RETRY_WAIT_MS); + } + + ath12k_warn(ab, "htc suspend not complete, failing after %d tries\n", i); + + return -ETIMEDOUT; +} + +int ath12k_wow_wakeup(struct ath12k *ar) +{ + struct ath12k_base *ab = ar->ab; + int ret; + + reinit_completion(&ab->wow.wakeup_completed); + + ret = ath12k_wmi_wow_host_wakeup_ind(ar); + if (ret) { + ath12k_warn(ab, "failed to send wow wakeup indication: %d\n", + ret); + return ret; + } + + ret = wait_for_completion_timeout(&ab->wow.wakeup_completed, 3 * HZ); + if (ret == 0) { + ath12k_warn(ab, "timed out while waiting for wow wakeup completion\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static int ath12k_wow_vif_cleanup(struct ath12k_vif *arvif) +{ + struct ath12k *ar = arvif->ar; + int i, ret; + + for (i = 0; i < WOW_EVENT_MAX; i++) { + ret = ath12k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0); + if (ret) { + ath12k_warn(ar->ab, "failed to issue wow wakeup for event %s on vdev %i: %d\n", + wow_wakeup_event(i), arvif->vdev_id, ret); + return ret; + } + } + + for (i = 0; i < ar->wow.max_num_patterns; i++) { + ret = ath12k_wmi_wow_del_pattern(ar, arvif->vdev_id, i); + if (ret) { + ath12k_warn(ar->ab, "failed to delete wow pattern %d for vdev %i: %d\n", + i, arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +static int ath12k_wow_cleanup(struct ath12k *ar) +{ + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + ret = ath12k_wow_vif_cleanup(arvif); + if (ret) { + ath12k_warn(ar->ab, "failed to clean wow wakeups on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +/* Convert a 802.3 format to a 802.11 format. + * +------------+-----------+--------+----------------+ + * 802.3: |dest mac(6B)|src mac(6B)|type(2B)| body... | + * +------------+-----------+--------+----------------+ + * |__ |_______ |____________ |________ + * | | | | + * +--+------------+----+-----------+---------------+-----------+ + * 802.11: |4B|dest mac(6B)| 6B |src mac(6B)| 8B |type(2B)| body... | + * +--+------------+----+-----------+---------------+-----------+ + */ +static void +ath12k_wow_convert_8023_to_80211(struct ath12k *ar, + const struct cfg80211_pkt_pattern *eth_pattern, + struct ath12k_pkt_pattern *i80211_pattern) +{ + size_t r1042_eth_ofs = offsetof(struct rfc1042_hdr, eth_type); + size_t a1_ofs = offsetof(struct ieee80211_hdr_3addr, addr1); + size_t a3_ofs = offsetof(struct ieee80211_hdr_3addr, addr3); + size_t i80211_hdr_len = sizeof(struct ieee80211_hdr_3addr); + size_t prot_ofs = offsetof(struct ethhdr, h_proto); + size_t src_ofs = offsetof(struct ethhdr, h_source); + u8 eth_bytemask[WOW_MAX_PATTERN_SIZE] = {}; + const u8 *eth_pat = eth_pattern->pattern; + size_t eth_pat_len = eth_pattern->pattern_len; + size_t eth_pkt_ofs = eth_pattern->pkt_offset; + u8 *bytemask = i80211_pattern->bytemask; + u8 *pat = i80211_pattern->pattern; + size_t pat_len = 0; + size_t pkt_ofs = 0; + size_t delta; + int i; + + /* convert bitmask to bytemask */ + for (i = 0; i < eth_pat_len; i++) + if (eth_pattern->mask[i / 8] & BIT(i % 8)) + eth_bytemask[i] = 0xff; + + if (eth_pkt_ofs < ETH_ALEN) { + pkt_ofs = eth_pkt_ofs + a1_ofs; + + if (size_add(eth_pkt_ofs, eth_pat_len) < ETH_ALEN) { + memcpy(pat, eth_pat, eth_pat_len); + memcpy(bytemask, eth_bytemask, eth_pat_len); + + pat_len = eth_pat_len; + } else if (eth_pkt_ofs + eth_pat_len < prot_ofs) { + memcpy(pat, eth_pat, ETH_ALEN - eth_pkt_ofs); + memcpy(bytemask, eth_bytemask, ETH_ALEN - eth_pkt_ofs); + + delta = eth_pkt_ofs + eth_pat_len - src_ofs; + memcpy(pat + a3_ofs - pkt_ofs, + eth_pat + ETH_ALEN - eth_pkt_ofs, + delta); + memcpy(bytemask + a3_ofs - pkt_ofs, + eth_bytemask + ETH_ALEN - eth_pkt_ofs, + delta); + + pat_len = a3_ofs - pkt_ofs + delta; + } else { + memcpy(pat, eth_pat, ETH_ALEN - eth_pkt_ofs); + memcpy(bytemask, eth_bytemask, ETH_ALEN - eth_pkt_ofs); + + memcpy(pat + a3_ofs - pkt_ofs, + eth_pat + ETH_ALEN - eth_pkt_ofs, + ETH_ALEN); + memcpy(bytemask + a3_ofs - pkt_ofs, + eth_bytemask + ETH_ALEN - eth_pkt_ofs, + ETH_ALEN); + + delta = eth_pkt_ofs + eth_pat_len - prot_ofs; + memcpy(pat + i80211_hdr_len + r1042_eth_ofs - pkt_ofs, + eth_pat + prot_ofs - eth_pkt_ofs, + delta); + memcpy(bytemask + i80211_hdr_len + r1042_eth_ofs - pkt_ofs, + eth_bytemask + prot_ofs - eth_pkt_ofs, + delta); + + pat_len = i80211_hdr_len + r1042_eth_ofs - pkt_ofs + delta; + } + } else if (eth_pkt_ofs < prot_ofs) { + pkt_ofs = eth_pkt_ofs - ETH_ALEN + a3_ofs; + + if (size_add(eth_pkt_ofs, eth_pat_len) < prot_ofs) { + memcpy(pat, eth_pat, eth_pat_len); + memcpy(bytemask, eth_bytemask, eth_pat_len); + + pat_len = eth_pat_len; + } else { + memcpy(pat, eth_pat, prot_ofs - eth_pkt_ofs); + memcpy(bytemask, eth_bytemask, prot_ofs - eth_pkt_ofs); + + delta = eth_pkt_ofs + eth_pat_len - prot_ofs; + memcpy(pat + i80211_hdr_len + r1042_eth_ofs - pkt_ofs, + eth_pat + prot_ofs - eth_pkt_ofs, + delta); + memcpy(bytemask + i80211_hdr_len + r1042_eth_ofs - pkt_ofs, + eth_bytemask + prot_ofs - eth_pkt_ofs, + delta); + + pat_len = i80211_hdr_len + r1042_eth_ofs - pkt_ofs + delta; + } + } else { + pkt_ofs = eth_pkt_ofs - prot_ofs + i80211_hdr_len + r1042_eth_ofs; + + memcpy(pat, eth_pat, eth_pat_len); + memcpy(bytemask, eth_bytemask, eth_pat_len); + + pat_len = eth_pat_len; + } + + i80211_pattern->pattern_len = pat_len; + i80211_pattern->pkt_offset = pkt_ofs; +} + +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) +{ + int i, j; + u8 ssid_len; + + pno->enable = 1; + pno->vdev_id = vdev_id; + pno->uc_networks_count = nd_config->n_match_sets; + + if (!pno->uc_networks_count || + pno->uc_networks_count > WMI_PNO_MAX_SUPP_NETWORKS) + return -EINVAL; + + if (nd_config->n_channels > WMI_PNO_MAX_NETW_CHANNELS_EX) + return -EINVAL; + + /* Filling per profile params */ + for (i = 0; i < pno->uc_networks_count; i++) { + ssid_len = nd_config->match_sets[i].ssid.ssid_len; + + if (ssid_len == 0 || ssid_len > 32) + return -EINVAL; + + pno->a_networks[i].ssid.ssid_len = ssid_len; + + memcpy(pno->a_networks[i].ssid.ssid, + nd_config->match_sets[i].ssid.ssid, + ssid_len); + pno->a_networks[i].authentication = 0; + pno->a_networks[i].encryption = 0; + pno->a_networks[i].bcast_nw_type = 0; + + /* Copying list of valid channel into request */ + pno->a_networks[i].channel_count = nd_config->n_channels; + pno->a_networks[i].rssi_threshold = nd_config->match_sets[i].rssi_thold; + + for (j = 0; j < nd_config->n_channels; j++) { + pno->a_networks[i].channels[j] = + nd_config->channels[j]->center_freq; + } + } + + /* set scan to passive if no SSIDs are specified in the request */ + if (nd_config->n_ssids == 0) + pno->do_passive_scan = true; + else + pno->do_passive_scan = false; + + for (i = 0; i < nd_config->n_ssids; i++) { + for (j = 0; j < pno->uc_networks_count; j++) { + if (pno->a_networks[j].ssid.ssid_len == + nd_config->ssids[i].ssid_len && + !memcmp(pno->a_networks[j].ssid.ssid, + nd_config->ssids[i].ssid, + pno->a_networks[j].ssid.ssid_len)) { + pno->a_networks[j].bcast_nw_type = BCAST_HIDDEN; + break; + } + } + } + + if (nd_config->n_scan_plans == 2) { + pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC; + pno->fast_scan_max_cycles = nd_config->scan_plans[0].iterations; + pno->slow_scan_period = + nd_config->scan_plans[1].interval * MSEC_PER_SEC; + } else if (nd_config->n_scan_plans == 1) { + pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC; + pno->fast_scan_max_cycles = 1; + pno->slow_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC; + } else { + ath12k_warn(ar->ab, "Invalid number of PNO scan plans: %d", + nd_config->n_scan_plans); + } + + if (nd_config->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { + /* enable mac randomization */ + pno->enable_pno_scan_randomization = 1; + memcpy(pno->mac_addr, nd_config->mac_addr, ETH_ALEN); + memcpy(pno->mac_addr_mask, nd_config->mac_addr_mask, ETH_ALEN); + } + + pno->delay_start_time = nd_config->delay; + + /* Current FW does not support min-max range for dwell time */ + pno->active_max_time = WMI_ACTIVE_MAX_CHANNEL_TIME; + pno->passive_max_time = WMI_PASSIVE_MAX_CHANNEL_TIME; + + return 0; +} + +static int ath12k_wow_vif_set_wakeups(struct ath12k_vif *arvif, + struct cfg80211_wowlan *wowlan) +{ + const struct cfg80211_pkt_pattern *patterns = wowlan->patterns; + struct ath12k *ar = arvif->ar; + unsigned long wow_mask = 0; + int pattern_id = 0; + int ret, i; + + /* Setup requested WOW features */ + switch (arvif->vdev_type) { + case WMI_VDEV_TYPE_IBSS: + __set_bit(WOW_BEACON_EVENT, &wow_mask); + fallthrough; + case WMI_VDEV_TYPE_AP: + __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask); + __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask); + __set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask); + __set_bit(WOW_AUTH_REQ_EVENT, &wow_mask); + __set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask); + __set_bit(WOW_HTT_EVENT, &wow_mask); + __set_bit(WOW_RA_MATCH_EVENT, &wow_mask); + break; + case WMI_VDEV_TYPE_STA: + if (wowlan->disconnect) { + __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask); + __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask); + __set_bit(WOW_BMISS_EVENT, &wow_mask); + __set_bit(WOW_CSA_IE_EVENT, &wow_mask); + } + + if (wowlan->magic_pkt) + __set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask); + + if (wowlan->nd_config) { + struct wmi_pno_scan_req_arg *pno; + int ret; + + pno = kzalloc(sizeof(*pno), GFP_KERNEL); + if (!pno) + return -ENOMEM; + + ar->nlo_enabled = true; + + ret = ath12k_wow_pno_check_and_convert(ar, arvif->vdev_id, + wowlan->nd_config, pno); + if (!ret) { + ath12k_wmi_wow_config_pno(ar, arvif->vdev_id, pno); + __set_bit(WOW_NLO_DETECTED_EVENT, &wow_mask); + } + + kfree(pno); + } + break; + default: + break; + } + + for (i = 0; i < wowlan->n_patterns; i++) { + const struct cfg80211_pkt_pattern *eth_pattern = &patterns[i]; + struct ath12k_pkt_pattern new_pattern = {}; + + if (WARN_ON(eth_pattern->pattern_len > WOW_MAX_PATTERN_SIZE)) + return -EINVAL; + + if (ar->ab->wow.wmi_conf_rx_decap_mode == + ATH12K_HW_TXRX_NATIVE_WIFI) { + ath12k_wow_convert_8023_to_80211(ar, eth_pattern, + &new_pattern); + + if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE)) + return -EINVAL; + } else { + memcpy(new_pattern.pattern, eth_pattern->pattern, + eth_pattern->pattern_len); + + /* convert bitmask to bytemask */ + for (i = 0; i < eth_pattern->pattern_len; i++) + if (eth_pattern->mask[i / 8] & BIT(i % 8)) + new_pattern.bytemask[i] = 0xff; + + new_pattern.pattern_len = eth_pattern->pattern_len; + new_pattern.pkt_offset = eth_pattern->pkt_offset; + } + + ret = ath12k_wmi_wow_add_pattern(ar, arvif->vdev_id, + pattern_id, + new_pattern.pattern, + new_pattern.bytemask, + new_pattern.pattern_len, + new_pattern.pkt_offset); + if (ret) { + ath12k_warn(ar->ab, "failed to add pattern %i to vdev %i: %d\n", + pattern_id, + arvif->vdev_id, ret); + return ret; + } + + pattern_id++; + __set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask); + } + + for (i = 0; i < WOW_EVENT_MAX; i++) { + if (!test_bit(i, &wow_mask)) + continue; + ret = ath12k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1); + if (ret) { + ath12k_warn(ar->ab, "failed to enable wakeup event %s on vdev %i: %d\n", + wow_wakeup_event(i), arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +static int ath12k_wow_set_wakeups(struct ath12k *ar, + struct cfg80211_wowlan *wowlan) +{ + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (ath12k_wow_is_p2p_vdev(arvif)) + continue; + ret = ath12k_wow_vif_set_wakeups(arvif, wowlan); + if (ret) { + ath12k_warn(ar->ab, "failed to set wow wakeups on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +static int ath12k_wow_vdev_clean_nlo(struct ath12k *ar, u32 vdev_id) +{ + struct wmi_pno_scan_req_arg *pno; + int ret; + + if (!ar->nlo_enabled) + return 0; + + pno = kzalloc(sizeof(*pno), GFP_KERNEL); + if (!pno) + return -ENOMEM; + + pno->enable = 0; + ret = ath12k_wmi_wow_config_pno(ar, vdev_id, pno); + if (ret) { + ath12k_warn(ar->ab, "failed to disable PNO: %d", ret); + goto out; + } + + ar->nlo_enabled = false; + +out: + kfree(pno); + return ret; +} + +static int ath12k_wow_vif_clean_nlo(struct ath12k_vif *arvif) +{ + struct ath12k *ar = arvif->ar; + + switch (arvif->vdev_type) { + case WMI_VDEV_TYPE_STA: + return ath12k_wow_vdev_clean_nlo(ar, arvif->vdev_id); + default: + return 0; + } +} + +static int ath12k_wow_nlo_cleanup(struct ath12k *ar) +{ + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (ath12k_wow_is_p2p_vdev(arvif)) + continue; + + ret = ath12k_wow_vif_clean_nlo(arvif); + if (ret) { + ath12k_warn(ar->ab, "failed to clean nlo settings on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +static int ath12k_wow_set_hw_filter(struct ath12k *ar) +{ + struct wmi_hw_data_filter_arg arg; + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (arvif->vdev_type != WMI_VDEV_TYPE_STA) + continue; + + arg.vdev_id = arvif->vdev_id; + arg.enable = true; + arg.hw_filter_bitmap = WMI_HW_DATA_FILTER_DROP_NON_ICMPV6_MC; + ret = ath12k_wmi_hw_data_filter_cmd(ar, &arg); + if (ret) { + ath12k_warn(ar->ab, "failed to set hw data filter on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +static int ath12k_wow_clear_hw_filter(struct ath12k *ar) +{ + struct wmi_hw_data_filter_arg arg; + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (arvif->vdev_type != WMI_VDEV_TYPE_STA) + continue; + + arg.vdev_id = arvif->vdev_id; + arg.enable = false; + arg.hw_filter_bitmap = 0; + ret = ath12k_wmi_hw_data_filter_cmd(ar, &arg); + + if (ret) { + ath12k_warn(ar->ab, "failed to clear hw data filter on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +static void ath12k_wow_generate_ns_mc_addr(struct ath12k_base *ab, + struct wmi_arp_ns_offload_arg *offload) +{ + int i; + + for (i = 0; i < offload->ipv6_count; i++) { + offload->self_ipv6_addr[i][0] = 0xff; + offload->self_ipv6_addr[i][1] = 0x02; + offload->self_ipv6_addr[i][11] = 0x01; + offload->self_ipv6_addr[i][12] = 0xff; + offload->self_ipv6_addr[i][13] = + offload->ipv6_addr[i][13]; + offload->self_ipv6_addr[i][14] = + offload->ipv6_addr[i][14]; + offload->self_ipv6_addr[i][15] = + offload->ipv6_addr[i][15]; + ath12k_dbg(ab, ATH12K_DBG_WOW, "NS solicited addr %pI6\n", + offload->self_ipv6_addr[i]); + } +} + +static void ath12k_wow_prepare_ns_offload(struct ath12k_vif *arvif, + struct wmi_arp_ns_offload_arg *offload) +{ + struct net_device *ndev = ieee80211_vif_to_wdev(arvif->vif)->netdev; + struct ath12k_base *ab = arvif->ar->ab; + struct inet6_ifaddr *ifa6; + struct ifacaddr6 *ifaca6; + struct inet6_dev *idev; + u32 count = 0, scope; + + if (!ndev) + return; + + idev = in6_dev_get(ndev); + if (!idev) + return; + + ath12k_dbg(ab, ATH12K_DBG_WOW, "wow prepare ns offload\n"); + + read_lock_bh(&idev->lock); + + /* get unicast address */ + list_for_each_entry(ifa6, &idev->addr_list, if_list) { + if (count >= WMI_IPV6_MAX_COUNT) + goto unlock; + + if (ifa6->flags & IFA_F_DADFAILED) + continue; + + scope = ipv6_addr_src_scope(&ifa6->addr); + if (scope != IPV6_ADDR_SCOPE_LINKLOCAL && + scope != IPV6_ADDR_SCOPE_GLOBAL) { + ath12k_dbg(ab, ATH12K_DBG_WOW, + "Unsupported ipv6 scope: %d\n", scope); + continue; + } + + memcpy(offload->ipv6_addr[count], &ifa6->addr.s6_addr, + sizeof(ifa6->addr.s6_addr)); + offload->ipv6_type[count] = WMI_IPV6_UC_TYPE; + ath12k_dbg(ab, ATH12K_DBG_WOW, "mac count %d ipv6 uc %pI6 scope %d\n", + count, offload->ipv6_addr[count], + scope); + count++; + } + + /* get anycast address */ + rcu_read_lock(); + + for (ifaca6 = rcu_dereference(idev->ac_list); ifaca6; + ifaca6 = rcu_dereference(ifaca6->aca_next)) { + if (count >= WMI_IPV6_MAX_COUNT) { + rcu_read_unlock(); + goto unlock; + } + + scope = ipv6_addr_src_scope(&ifaca6->aca_addr); + if (scope != IPV6_ADDR_SCOPE_LINKLOCAL && + scope != IPV6_ADDR_SCOPE_GLOBAL) { + ath12k_dbg(ab, ATH12K_DBG_WOW, + "Unsupported ipv scope: %d\n", scope); + continue; + } + + memcpy(offload->ipv6_addr[count], &ifaca6->aca_addr, + sizeof(ifaca6->aca_addr)); + offload->ipv6_type[count] = WMI_IPV6_AC_TYPE; + ath12k_dbg(ab, ATH12K_DBG_WOW, "mac count %d ipv6 ac %pI6 scope %d\n", + count, offload->ipv6_addr[count], + scope); + count++; + } + + rcu_read_unlock(); + +unlock: + read_unlock_bh(&idev->lock); + + in6_dev_put(idev); + + offload->ipv6_count = count; + ath12k_wow_generate_ns_mc_addr(ab, offload); +} + +static void ath12k_wow_prepare_arp_offload(struct ath12k_vif *arvif, + struct wmi_arp_ns_offload_arg *offload) +{ + struct ieee80211_vif *vif = arvif->vif; + struct ieee80211_vif_cfg vif_cfg = vif->cfg; + struct ath12k_base *ab = arvif->ar->ab; + u32 ipv4_cnt; + + ath12k_dbg(ab, ATH12K_DBG_WOW, "wow prepare arp offload\n"); + + ipv4_cnt = min(vif_cfg.arp_addr_cnt, WMI_IPV4_MAX_COUNT); + memcpy(offload->ipv4_addr, vif_cfg.arp_addr_list, ipv4_cnt * sizeof(u32)); + offload->ipv4_count = ipv4_cnt; + + ath12k_dbg(ab, ATH12K_DBG_WOW, + "wow arp_addr_cnt %d vif->addr %pM, offload_addr %pI4\n", + vif_cfg.arp_addr_cnt, vif->addr, offload->ipv4_addr); +} + +static int ath12k_wow_arp_ns_offload(struct ath12k *ar, bool enable) +{ + struct wmi_arp_ns_offload_arg *offload; + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + offload = kmalloc(sizeof(*offload), GFP_KERNEL); + if (!offload) + return -ENOMEM; + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (arvif->vdev_type != WMI_VDEV_TYPE_STA) + continue; + + memset(offload, 0, sizeof(*offload)); + + memcpy(offload->mac_addr, arvif->vif->addr, ETH_ALEN); + ath12k_wow_prepare_ns_offload(arvif, offload); + ath12k_wow_prepare_arp_offload(arvif, offload); + + ret = ath12k_wmi_arp_ns_offload(ar, arvif, offload, enable); + if (ret) { + ath12k_warn(ar->ab, "failed to set arp ns offload vdev %i: enable %d, ret %d\n", + arvif->vdev_id, enable, ret); + return ret; + } + } + + kfree(offload); + + return 0; +} + +static int ath12k_gtk_rekey_offload(struct ath12k *ar, bool enable) +{ + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (arvif->vdev_type != WMI_VDEV_TYPE_STA || + !arvif->is_up || + !arvif->rekey_data.enable_offload) + continue; + + /* get rekey info before disable rekey offload */ + if (!enable) { + ret = ath12k_wmi_gtk_rekey_getinfo(ar, arvif); + if (ret) { + ath12k_warn(ar->ab, "failed to request rekey info vdev %i, ret %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + ret = ath12k_wmi_gtk_rekey_offload(ar, arvif, enable); + + if (ret) { + ath12k_warn(ar->ab, "failed to offload gtk reky vdev %i: enable %d, ret %d\n", + arvif->vdev_id, enable, ret); + return ret; + } + } + + return 0; +} + +static int ath12k_wow_protocol_offload(struct ath12k *ar, bool enable) +{ + int ret; + + ret = ath12k_wow_arp_ns_offload(ar, enable); + if (ret) { + ath12k_warn(ar->ab, "failed to offload ARP and NS %d %d\n", + enable, ret); + return ret; + } + + ret = ath12k_gtk_rekey_offload(ar, enable); + if (ret) { + ath12k_warn(ar->ab, "failed to offload gtk rekey %d %d\n", + enable, ret); + return ret; + } + + return 0; +} + +static int ath12k_wow_set_keepalive(struct ath12k *ar, + enum wmi_sta_keepalive_method method, + u32 interval) +{ + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + ret = ath12k_mac_vif_set_keepalive(arvif, method, interval); + if (ret) + return ret; + } + + return 0; +} + +int ath12k_wow_op_suspend(struct ieee80211_hw *hw, + struct cfg80211_wowlan *wowlan) +{ + struct ath12k_hw *ah = ath12k_hw_to_ah(hw); + struct ath12k *ar = ath12k_ah_to_ar(ah, 0); + int ret; + + mutex_lock(&ar->conf_mutex); + + ret = ath12k_wow_cleanup(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to clear wow wakeup events: %d\n", + ret); + goto exit; + } + + ret = ath12k_wow_set_wakeups(ar, wowlan); + if (ret) { + ath12k_warn(ar->ab, "failed to set wow wakeup events: %d\n", + ret); + goto cleanup; + } + + ret = ath12k_wow_protocol_offload(ar, true); + if (ret) { + ath12k_warn(ar->ab, "failed to set wow protocol offload events: %d\n", + ret); + goto cleanup; + } + + ret = ath12k_mac_wait_tx_complete(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to wait tx complete: %d\n", ret); + goto cleanup; + } + + ret = ath12k_wow_set_hw_filter(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to set hw filter: %d\n", + ret); + goto cleanup; + } + + ret = ath12k_wow_set_keepalive(ar, + WMI_STA_KEEPALIVE_METHOD_NULL_FRAME, + WMI_STA_KEEPALIVE_INTERVAL_DEFAULT); + if (ret) { + ath12k_warn(ar->ab, "failed to enable wow keepalive: %d\n", ret); + goto cleanup; + } + + ret = ath12k_wow_enable(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to start wow: %d\n", ret); + goto cleanup; + } + + ath12k_hif_irq_disable(ar->ab); + ath12k_hif_ce_irq_disable(ar->ab); + + ret = ath12k_hif_suspend(ar->ab); + if (ret) { + ath12k_warn(ar->ab, "failed to suspend hif: %d\n", ret); + goto wakeup; + } + + goto exit; + +wakeup: + ath12k_wow_wakeup(ar); + +cleanup: + ath12k_wow_cleanup(ar); + +exit: + mutex_unlock(&ar->conf_mutex); + return ret ? 1 : 0; +} + +void ath12k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled) +{ + struct ath12k_hw *ah = ath12k_hw_to_ah(hw); + struct ath12k *ar = ath12k_ah_to_ar(ah, 0); + + mutex_lock(&ar->conf_mutex); + device_set_wakeup_enable(ar->ab->dev, enabled); + mutex_unlock(&ar->conf_mutex); +} + +int ath12k_wow_op_resume(struct ieee80211_hw *hw) +{ + struct ath12k_hw *ah = ath12k_hw_to_ah(hw); + struct ath12k *ar = ath12k_ah_to_ar(ah, 0); + int ret; + + mutex_lock(&ar->conf_mutex); + + ret = ath12k_hif_resume(ar->ab); + if (ret) { + ath12k_warn(ar->ab, "failed to resume hif: %d\n", ret); + goto exit; + } + + ath12k_hif_ce_irq_enable(ar->ab); + ath12k_hif_irq_enable(ar->ab); + + ret = ath12k_wow_wakeup(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to wakeup from wow: %d\n", ret); + goto exit; + } + + ret = ath12k_wow_nlo_cleanup(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to cleanup nlo: %d\n", ret); + goto exit; + } + + ret = ath12k_wow_clear_hw_filter(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to clear hw filter: %d\n", ret); + goto exit; + } + + ret = ath12k_wow_protocol_offload(ar, false); + if (ret) { + ath12k_warn(ar->ab, "failed to clear wow protocol offload events: %d\n", + ret); + goto exit; + } + + ret = ath12k_wow_set_keepalive(ar, + WMI_STA_KEEPALIVE_METHOD_NULL_FRAME, + WMI_STA_KEEPALIVE_INTERVAL_DISABLE); + if (ret) { + ath12k_warn(ar->ab, "failed to disable wow keepalive: %d\n", ret); + goto exit; + } + +exit: + if (ret) { + switch (ah->state) { + case ATH12K_HW_STATE_ON: + ah->state = ATH12K_HW_STATE_RESTARTING; + ret = 1; + break; + case ATH12K_HW_STATE_OFF: + case ATH12K_HW_STATE_RESTARTING: + case ATH12K_HW_STATE_RESTARTED: + case ATH12K_HW_STATE_WEDGED: + ath12k_warn(ar->ab, "encountered unexpected device state %d on resume, cannot recover\n", + ah->state); + ret = -EIO; + break; + } + } + + mutex_unlock(&ar->conf_mutex); + return ret; +} + +int ath12k_wow_init(struct ath12k *ar) +{ + if (!test_bit(WMI_TLV_SERVICE_WOW, ar->wmi->wmi_ab->svc_map)) + return 0; + + ar->wow.wowlan_support = ath12k_wowlan_support; + + if (ar->ab->wow.wmi_conf_rx_decap_mode == ATH12K_HW_TXRX_NATIVE_WIFI) { + ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE; + ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE; + } + + if (test_bit(WMI_TLV_SERVICE_NLO, ar->wmi->wmi_ab->svc_map)) { + ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT; + ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS; + } + + ar->wow.max_num_patterns = ATH12K_WOW_PATTERNS; + ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns; + ar->ah->hw->wiphy->wowlan = &ar->wow.wowlan_support; + + device_set_wakeup_capable(ar->ab->dev, true); + + return 0; +} |