// 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, j;
/* 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 (j = 0; j < eth_pattern->pattern_len; j++)
if (eth_pattern->mask[j / 8] & BIT(j % 8))
new_pattern.bytemask[j] = 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;
}
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