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gfiber / vendor / opensource / backports / b531de79d31ac526073ed44838ce2b11dc5ea74d / . / drivers / net / wireless / ath / ath10k / mac.c
blob: f092b88d69e247fb4d810b0b165acf743b0a773c [file] [log] [blame]
/*
* Copyright (c) 2005-2011 Atheros Communications Inc.
* Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "mac.h"
#include <net/mac80211.h>
#include <linux/etherdevice.h>
#include "hif.h"
#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "htt.h"
#include "txrx.h"
#include "testmode.h"
#include "wmi.h"
#include "wmi-tlv.h"
#include "wmi-ops.h"
#include "wow.h"
/*********/
/* Rates */
/*********/
static struct ieee80211_rate ath10k_rates[] = {
{ .bitrate = 10,
.hw_value = ATH10K_HW_RATE_CCK_LP_1M },
{ .bitrate = 20,
.hw_value = ATH10K_HW_RATE_CCK_LP_2M,
.hw_value_short = ATH10K_HW_RATE_CCK_SP_2M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 55,
.hw_value = ATH10K_HW_RATE_CCK_LP_5_5M,
.hw_value_short = ATH10K_HW_RATE_CCK_SP_5_5M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 110,
.hw_value = ATH10K_HW_RATE_CCK_LP_11M,
.hw_value_short = ATH10K_HW_RATE_CCK_SP_11M,
.flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 60, .hw_value = ATH10K_HW_RATE_OFDM_6M },
{ .bitrate = 90, .hw_value = ATH10K_HW_RATE_OFDM_9M },
{ .bitrate = 120, .hw_value = ATH10K_HW_RATE_OFDM_12M },
{ .bitrate = 180, .hw_value = ATH10K_HW_RATE_OFDM_18M },
{ .bitrate = 240, .hw_value = ATH10K_HW_RATE_OFDM_24M },
{ .bitrate = 360, .hw_value = ATH10K_HW_RATE_OFDM_36M },
{ .bitrate = 480, .hw_value = ATH10K_HW_RATE_OFDM_48M },
{ .bitrate = 540, .hw_value = ATH10K_HW_RATE_OFDM_54M },
};
#define ATH10K_MAC_FIRST_OFDM_RATE_IDX 4
#define ath10k_a_rates (ath10k_rates + ATH10K_MAC_FIRST_OFDM_RATE_IDX)
#define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - \
ATH10K_MAC_FIRST_OFDM_RATE_IDX)
#define ath10k_g_rates (ath10k_rates + 0)
#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))
static bool ath10k_mac_bitrate_is_cck(int bitrate)
{
switch (bitrate) {
case 10:
case 20:
case 55:
case 110:
return true;
}
return false;
}
static u8 ath10k_mac_bitrate_to_rate(int bitrate)
{
return DIV_ROUND_UP(bitrate, 5) |
(ath10k_mac_bitrate_is_cck(bitrate) ? BIT(7) : 0);
}
u8 ath10k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband,
u8 hw_rate)
{
const struct ieee80211_rate *rate;
int i;
for (i = 0; i < sband->n_bitrates; i++) {
rate = &sband->bitrates[i];
if (rate->hw_value == hw_rate)
return i;
else if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE &&
rate->hw_value_short == hw_rate)
return i;
}
return 0;
}
u8 ath10k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband,
u32 bitrate)
{
int i;
for (i = 0; i < sband->n_bitrates; i++)
if (sband->bitrates[i].bitrate == bitrate)
return i;
return 0;
}
static int ath10k_mac_get_max_vht_mcs_map(u16 mcs_map, int nss)
{
switch ((mcs_map >> (2 * nss)) & 0x3) {
case IEEE80211_VHT_MCS_SUPPORT_0_7: return BIT(8) - 1;
case IEEE80211_VHT_MCS_SUPPORT_0_8: return BIT(9) - 1;
case IEEE80211_VHT_MCS_SUPPORT_0_9: return BIT(10) - 1;
}
return 0;
}
static u32
ath10k_mac_max_ht_nss(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
{
int nss;
for (nss = IEEE80211_HT_MCS_MASK_LEN - 1; nss >= 0; nss--)
if (ht_mcs_mask[nss])
return nss + 1;
return 1;
}
static u32
ath10k_mac_max_vht_nss(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
{
int nss;
for (nss = NL80211_VHT_NSS_MAX - 1; nss >= 0; nss--)
if (vht_mcs_mask[nss])
return nss + 1;
return 1;
}
/**********/
/* Crypto */
/**********/
static int ath10k_send_key(struct ath10k_vif *arvif,
struct ieee80211_key_conf *key,
enum set_key_cmd cmd,
const u8 *macaddr, u32 flags)
{
struct ath10k *ar = arvif->ar;
struct wmi_vdev_install_key_arg arg = {
.vdev_id = arvif->vdev_id,
.key_idx = key->keyidx,
.key_len = key->keylen,
.key_data = key->key,
.key_flags = flags,
.macaddr = macaddr,
};
lockdep_assert_held(&arvif->ar->conf_mutex);
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
arg.key_cipher = WMI_CIPHER_AES_CCM;
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
break;
case WLAN_CIPHER_SUITE_TKIP:
arg.key_cipher = WMI_CIPHER_TKIP;
arg.key_txmic_len = 8;
arg.key_rxmic_len = 8;
break;
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
arg.key_cipher = WMI_CIPHER_WEP;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
WARN_ON(1);
return -EINVAL;
default:
ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
return -EOPNOTSUPP;
}
if (cmd == DISABLE_KEY) {
arg.key_cipher = WMI_CIPHER_NONE;
arg.key_data = NULL;
}
return ath10k_wmi_vdev_install_key(arvif->ar, &arg);
}
static int ath10k_install_key(struct ath10k_vif *arvif,
struct ieee80211_key_conf *key,
enum set_key_cmd cmd,
const u8 *macaddr, u32 flags)
{
struct ath10k *ar = arvif->ar;
int ret;
unsigned long time_left;
lockdep_assert_held(&ar->conf_mutex);
reinit_completion(&ar->install_key_done);
ret = ath10k_send_key(arvif, key, cmd, macaddr, flags);
if (ret)
return ret;
time_left = wait_for_completion_timeout(&ar->install_key_done, 3 * HZ);
if (time_left == 0)
return -ETIMEDOUT;
return 0;
}
static int ath10k_install_peer_wep_keys(struct ath10k_vif *arvif,
const u8 *addr)
{
struct ath10k *ar = arvif->ar;
struct ath10k_peer *peer;
int ret;
int i;
u32 flags;
lockdep_assert_held(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
spin_unlock_bh(&ar->data_lock);
if (!peer)
return -ENOENT;
for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) {
if (arvif->wep_keys[i] == NULL)
continue;
flags = 0;
flags |= WMI_KEY_PAIRWISE;
ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
addr, flags);
if (ret)
return ret;
flags = 0;
flags |= WMI_KEY_GROUP;
ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
addr, flags);
if (ret)
return ret;
spin_lock_bh(&ar->data_lock);
peer->keys[i] = arvif->wep_keys[i];
spin_unlock_bh(&ar->data_lock);
}
/* In some cases (notably with static WEP IBSS with multiple keys)
* multicast Tx becomes broken. Both pairwise and groupwise keys are
* installed already. Using WMI_KEY_TX_USAGE in different combinations
* didn't seem help. Using def_keyid vdev parameter seems to be
* effective so use that.
*
* FIXME: Revisit. Perhaps this can be done in a less hacky way.
*/
if (arvif->def_wep_key_idx == -1)
return 0;
ret = ath10k_wmi_vdev_set_param(arvif->ar,
arvif->vdev_id,
arvif->ar->wmi.vdev_param->def_keyid,
arvif->def_wep_key_idx);
if (ret) {
ath10k_warn(ar, "failed to re-set def wpa key idxon vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
return 0;
}
static int ath10k_clear_peer_keys(struct ath10k_vif *arvif,
const u8 *addr)
{
struct ath10k *ar = arvif->ar;
struct ath10k_peer *peer;
int first_errno = 0;
int ret;
int i;
u32 flags = 0;
lockdep_assert_held(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
spin_unlock_bh(&ar->data_lock);
if (!peer)
return -ENOENT;
for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
if (peer->keys[i] == NULL)
continue;
/* key flags are not required to delete the key */
ret = ath10k_install_key(arvif, peer->keys[i],
DISABLE_KEY, addr, flags);
if (ret && first_errno == 0)
first_errno = ret;
if (ret)
ath10k_warn(ar, "failed to remove peer wep key %d: %d\n",
i, ret);
spin_lock_bh(&ar->data_lock);
peer->keys[i] = NULL;
spin_unlock_bh(&ar->data_lock);
}
return first_errno;
}
bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr,
u8 keyidx)
{
struct ath10k_peer *peer;
int i;
lockdep_assert_held(&ar->data_lock);
/* We don't know which vdev this peer belongs to,
* since WMI doesn't give us that information.
*
* FIXME: multi-bss needs to be handled.
*/
peer = ath10k_peer_find(ar, 0, addr);
if (!peer)
return false;
for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
if (peer->keys[i] && peer->keys[i]->keyidx == keyidx)
return true;
}
return false;
}
static int ath10k_clear_vdev_key(struct ath10k_vif *arvif,
struct ieee80211_key_conf *key)
{
struct ath10k *ar = arvif->ar;
struct ath10k_peer *peer;
u8 addr[ETH_ALEN];
int first_errno = 0;
int ret;
int i;
u32 flags = 0;
lockdep_assert_held(&ar->conf_mutex);
for (;;) {
/* since ath10k_install_key we can't hold data_lock all the
* time, so we try to remove the keys incrementally */
spin_lock_bh(&ar->data_lock);
i = 0;
list_for_each_entry(peer, &ar->peers, list) {
for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
if (peer->keys[i] == key) {
ether_addr_copy(addr, peer->addr);
peer->keys[i] = NULL;
break;
}
}
if (i < ARRAY_SIZE(peer->keys))
break;
}
spin_unlock_bh(&ar->data_lock);
if (i == ARRAY_SIZE(peer->keys))
break;
/* key flags are not required to delete the key */
ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr, flags);
if (ret && first_errno == 0)
first_errno = ret;
if (ret)
ath10k_warn(ar, "failed to remove key for %pM: %d\n",
addr, ret);
}
return first_errno;
}
static int ath10k_mac_vif_update_wep_key(struct ath10k_vif *arvif,
struct ieee80211_key_conf *key)
{
struct ath10k *ar = arvif->ar;
struct ath10k_peer *peer;
int ret;
lockdep_assert_held(&ar->conf_mutex);
list_for_each_entry(peer, &ar->peers, list) {
if (!memcmp(peer->addr, arvif->vif->addr, ETH_ALEN))
continue;
if (!memcmp(peer->addr, arvif->bssid, ETH_ALEN))
continue;
if (peer->keys[key->keyidx] == key)
continue;
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vif vdev %i update key %i needs update\n",
arvif->vdev_id, key->keyidx);
ret = ath10k_install_peer_wep_keys(arvif, peer->addr);
if (ret) {
ath10k_warn(ar, "failed to update wep keys on vdev %i for peer %pM: %d\n",
arvif->vdev_id, peer->addr, ret);
return ret;
}
}
return 0;
}
/*********************/
/* General utilities */
/*********************/
static inline enum wmi_phy_mode
chan_to_phymode(const struct cfg80211_chan_def *chandef)
{
enum wmi_phy_mode phymode = MODE_UNKNOWN;
switch (chandef->chan->band) {
case IEEE80211_BAND_2GHZ:
switch (chandef->width) {
case NL80211_CHAN_WIDTH_20_NOHT:
if (chandef->chan->flags & IEEE80211_CHAN_NO_OFDM)
phymode = MODE_11B;
else
phymode = MODE_11G;
break;
case NL80211_CHAN_WIDTH_20:
phymode = MODE_11NG_HT20;
break;
case NL80211_CHAN_WIDTH_40:
phymode = MODE_11NG_HT40;
break;
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
case NL80211_CHAN_WIDTH_80:
case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_160:
phymode = MODE_UNKNOWN;
break;
}
break;
case IEEE80211_BAND_5GHZ:
switch (chandef->width) {
case NL80211_CHAN_WIDTH_20_NOHT:
phymode = MODE_11A;
break;
case NL80211_CHAN_WIDTH_20:
phymode = MODE_11NA_HT20;
break;
case NL80211_CHAN_WIDTH_40:
phymode = MODE_11NA_HT40;
break;
case NL80211_CHAN_WIDTH_80:
phymode = MODE_11AC_VHT80;
break;
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_160:
phymode = MODE_UNKNOWN;
break;
}
break;
default:
break;
}
WARN_ON(phymode == MODE_UNKNOWN);
return phymode;
}
static u8 ath10k_parse_mpdudensity(u8 mpdudensity)
{
/*
* 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
* 0 for no restriction
* 1 for 1/4 us
* 2 for 1/2 us
* 3 for 1 us
* 4 for 2 us
* 5 for 4 us
* 6 for 8 us
* 7 for 16 us
*/
switch (mpdudensity) {
case 0:
return 0;
case 1:
case 2:
case 3:
/* Our lower layer calculations limit our precision to
1 microsecond */
return 1;
case 4:
return 2;
case 5:
return 4;
case 6:
return 8;
case 7:
return 16;
default:
return 0;
}
}
int ath10k_mac_vif_chan(struct ieee80211_vif *vif,
struct cfg80211_chan_def *def)
{
struct ieee80211_chanctx_conf *conf;
rcu_read_lock();
conf = rcu_dereference(vif->chanctx_conf);
if (!conf) {
rcu_read_unlock();
return -ENOENT;
}
*def = conf->def;
rcu_read_unlock();
return 0;
}
static void ath10k_mac_num_chanctxs_iter(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *conf,
void *data)
{
int *num = data;
(*num)++;
}
static int ath10k_mac_num_chanctxs(struct ath10k *ar)
{
int num = 0;
ieee80211_iter_chan_contexts_atomic(ar->hw,
ath10k_mac_num_chanctxs_iter,
&num);
return num;
}
static void
ath10k_mac_get_any_chandef_iter(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *conf,
void *data)
{
struct cfg80211_chan_def **def = data;
*def = &conf->def;
}
static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr,
enum wmi_peer_type peer_type)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
if (ar->num_peers >= ar->max_num_peers)
return -ENOBUFS;
ret = ath10k_wmi_peer_create(ar, vdev_id, addr, peer_type);
if (ret) {
ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
addr, vdev_id, ret);
return ret;
}
ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
if (ret) {
ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
addr, vdev_id, ret);
return ret;
}
ar->num_peers++;
return 0;
}
static int ath10k_mac_set_kickout(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
u32 param;
int ret;
param = ar->wmi.pdev_param->sta_kickout_th;
ret = ath10k_wmi_pdev_set_param(ar, param,
ATH10K_KICKOUT_THRESHOLD);
if (ret) {
ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
param = ar->wmi.vdev_param->ap_keepalive_min_idle_inactive_time_secs;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
ATH10K_KEEPALIVE_MIN_IDLE);
if (ret) {
ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
param = ar->wmi.vdev_param->ap_keepalive_max_idle_inactive_time_secs;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
ATH10K_KEEPALIVE_MAX_IDLE);
if (ret) {
ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
param = ar->wmi.vdev_param->ap_keepalive_max_unresponsive_time_secs;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
ATH10K_KEEPALIVE_MAX_UNRESPONSIVE);
if (ret) {
ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
return 0;
}
static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
{
struct ath10k *ar = arvif->ar;
u32 vdev_param;
vdev_param = ar->wmi.vdev_param->rts_threshold;
return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
}
static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
{
struct ath10k *ar = arvif->ar;
u32 vdev_param;
if (value != 0xFFFFFFFF)
value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
ATH10K_FRAGMT_THRESHOLD_MIN,
ATH10K_FRAGMT_THRESHOLD_MAX);
vdev_param = ar->wmi.vdev_param->fragmentation_threshold;
return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
}
static int ath10k_peer_delete(struct ath10k *ar, u32 vdev_id, const u8 *addr)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_wmi_peer_delete(ar, vdev_id, addr);
if (ret)
return ret;
ret = ath10k_wait_for_peer_deleted(ar, vdev_id, addr);
if (ret)
return ret;
ar->num_peers--;
return 0;
}
static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
{
struct ath10k_peer *peer, *tmp;
lockdep_assert_held(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
if (peer->vdev_id != vdev_id)
continue;
ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
peer->addr, vdev_id);
list_del(&peer->list);
kfree(peer);
ar->num_peers--;
}
spin_unlock_bh(&ar->data_lock);
}
static void ath10k_peer_cleanup_all(struct ath10k *ar)
{
struct ath10k_peer *peer, *tmp;
lockdep_assert_held(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
list_del(&peer->list);
kfree(peer);
}
spin_unlock_bh(&ar->data_lock);
ar->num_peers = 0;
ar->num_stations = 0;
}
static int ath10k_mac_tdls_peer_update(struct ath10k *ar, u32 vdev_id,
struct ieee80211_sta *sta,
enum wmi_tdls_peer_state state)
{
int ret;
struct wmi_tdls_peer_update_cmd_arg arg = {};
struct wmi_tdls_peer_capab_arg cap = {};
struct wmi_channel_arg chan_arg = {};
lockdep_assert_held(&ar->conf_mutex);
arg.vdev_id = vdev_id;
arg.peer_state = state;
ether_addr_copy(arg.addr, sta->addr);
cap.peer_max_sp = sta->max_sp;
cap.peer_uapsd_queues = sta->uapsd_queues;
if (state == WMI_TDLS_PEER_STATE_CONNECTED &&
!sta->tdls_initiator)
cap.is_peer_responder = 1;
ret = ath10k_wmi_tdls_peer_update(ar, &arg, &cap, &chan_arg);
if (ret) {
ath10k_warn(ar, "failed to update tdls peer %pM on vdev %i: %i\n",
arg.addr, vdev_id, ret);
return ret;
}
return 0;
}
/************************/
/* Interface management */
/************************/
void ath10k_mac_vif_beacon_free(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
lockdep_assert_held(&ar->data_lock);
if (!arvif->beacon)
return;
if (!arvif->beacon_buf)
dma_unmap_single(ar->dev, ATH10K_SKB_CB(arvif->beacon)->paddr,
arvif->beacon->len, DMA_TO_DEVICE);
if (WARN_ON(arvif->beacon_state != ATH10K_BEACON_SCHEDULED &&
arvif->beacon_state != ATH10K_BEACON_SENT))
return;
dev_kfree_skb_any(arvif->beacon);
arvif->beacon = NULL;
arvif->beacon_state = ATH10K_BEACON_SCHEDULED;
}
static void ath10k_mac_vif_beacon_cleanup(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
lockdep_assert_held(&ar->data_lock);
ath10k_mac_vif_beacon_free(arvif);
if (arvif->beacon_buf) {
dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
arvif->beacon_buf, arvif->beacon_paddr);
arvif->beacon_buf = NULL;
}
}
static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
{
unsigned long time_left;
lockdep_assert_held(&ar->conf_mutex);
if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
return -ESHUTDOWN;
time_left = wait_for_completion_timeout(&ar->vdev_setup_done,
ATH10K_VDEV_SETUP_TIMEOUT_HZ);
if (time_left == 0)
return -ETIMEDOUT;
return 0;
}
static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
{
struct cfg80211_chan_def *chandef = NULL;
struct ieee80211_channel *channel = chandef->chan;
struct wmi_vdev_start_request_arg arg = {};
int ret = 0;
lockdep_assert_held(&ar->conf_mutex);
ieee80211_iter_chan_contexts_atomic(ar->hw,
ath10k_mac_get_any_chandef_iter,
&chandef);
if (WARN_ON_ONCE(!chandef))
return -ENOENT;
channel = chandef->chan;
arg.vdev_id = vdev_id;
arg.channel.freq = channel->center_freq;
arg.channel.band_center_freq1 = chandef->center_freq1;
/* TODO setup this dynamically, what in case we
don't have any vifs? */
arg.channel.mode = chan_to_phymode(chandef);
arg.channel.chan_radar =
!!(channel->flags & IEEE80211_CHAN_RADAR);
arg.channel.min_power = 0;
arg.channel.max_power = channel->max_power * 2;
arg.channel.max_reg_power = channel->max_reg_power * 2;
arg.channel.max_antenna_gain = channel->max_antenna_gain * 2;
reinit_completion(&ar->vdev_setup_done);
ret = ath10k_wmi_vdev_start(ar, &arg);
if (ret) {
ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
vdev_id, ret);
return ret;
}
ret = ath10k_vdev_setup_sync(ar);
if (ret) {
ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i start: %d\n",
vdev_id, ret);
return ret;
}
ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
if (ret) {
ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
vdev_id, ret);
goto vdev_stop;
}
ar->monitor_vdev_id = vdev_id;
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
ar->monitor_vdev_id);
return 0;
vdev_stop:
ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
if (ret)
ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
ar->monitor_vdev_id, ret);
return ret;
}
static int ath10k_monitor_vdev_stop(struct ath10k *ar)
{
int ret = 0;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
if (ret)
ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
ar->monitor_vdev_id, ret);
reinit_completion(&ar->vdev_setup_done);
ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
if (ret)
ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
ar->monitor_vdev_id, ret);
ret = ath10k_vdev_setup_sync(ar);
if (ret)
ath10k_warn(ar, "failed to synchronize monitor vdev %i stop: %d\n",
ar->monitor_vdev_id, ret);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
ar->monitor_vdev_id);
return ret;
}
static int ath10k_monitor_vdev_create(struct ath10k *ar)
{
int bit, ret = 0;
lockdep_assert_held(&ar->conf_mutex);
if (ar->free_vdev_map == 0) {
ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
return -ENOMEM;
}
bit = __ffs64(ar->free_vdev_map);
ar->monitor_vdev_id = bit;
ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
WMI_VDEV_TYPE_MONITOR,
0, ar->mac_addr);
if (ret) {
ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
ar->monitor_vdev_id, ret);
return ret;
}
ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
ar->monitor_vdev_id);
return 0;
}
static int ath10k_monitor_vdev_delete(struct ath10k *ar)
{
int ret = 0;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
if (ret) {
ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
ar->monitor_vdev_id, ret);
return ret;
}
ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
ar->monitor_vdev_id);
return ret;
}
static int ath10k_monitor_start(struct ath10k *ar)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_monitor_vdev_create(ar);
if (ret) {
ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
return ret;
}
ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
if (ret) {
ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
ath10k_monitor_vdev_delete(ar);
return ret;
}
ar->monitor_started = true;
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
return 0;
}
static int ath10k_monitor_stop(struct ath10k *ar)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_monitor_vdev_stop(ar);
if (ret) {
ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
return ret;
}
ret = ath10k_monitor_vdev_delete(ar);
if (ret) {
ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
return ret;
}
ar->monitor_started = false;
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
return 0;
}
static bool ath10k_mac_monitor_vdev_is_needed(struct ath10k *ar)
{
int num_ctx;
/* At least one chanctx is required to derive a channel to start
* monitor vdev on.
*/
num_ctx = ath10k_mac_num_chanctxs(ar);
if (num_ctx == 0)
return false;
/* If there's already an existing special monitor interface then don't
* bother creating another monitor vdev.
*/
if (ar->monitor_arvif)
return false;
return ar->monitor ||
test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
}
static bool ath10k_mac_monitor_vdev_is_allowed(struct ath10k *ar)
{
int num_ctx;
num_ctx = ath10k_mac_num_chanctxs(ar);
/* FIXME: Current interface combinations and cfg80211/mac80211 code
* shouldn't allow this but make sure to prevent handling the following
* case anyway since multi-channel DFS hasn't been tested at all.
*/
if (test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags) && num_ctx > 1)
return false;
return true;
}
static int ath10k_monitor_recalc(struct ath10k *ar)
{
bool needed;
bool allowed;
int ret;
lockdep_assert_held(&ar->conf_mutex);
needed = ath10k_mac_monitor_vdev_is_needed(ar);
allowed = ath10k_mac_monitor_vdev_is_allowed(ar);
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac monitor recalc started? %d needed? %d allowed? %d\n",
ar->monitor_started, needed, allowed);
if (WARN_ON(needed && !allowed)) {
if (ar->monitor_started) {
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopping disallowed monitor\n");
ret = ath10k_monitor_stop(ar);
if (ret)
ath10k_warn(ar, "failed to stop disallowed monitor: %d\n", ret);
/* not serious */
}
return -EPERM;
}
if (needed == ar->monitor_started)
return 0;
if (needed)
return ath10k_monitor_start(ar);
else
return ath10k_monitor_stop(ar);
}
static int ath10k_recalc_rtscts_prot(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
u32 vdev_param, rts_cts = 0;
lockdep_assert_held(&ar->conf_mutex);
vdev_param = ar->wmi.vdev_param->enable_rtscts;
rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
if (arvif->num_legacy_stations > 0)
rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
WMI_RTSCTS_PROFILE);
else
rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
WMI_RTSCTS_PROFILE);
return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
rts_cts);
}
static int ath10k_start_cac(struct ath10k *ar)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
ret = ath10k_monitor_recalc(ar);
if (ret) {
ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
return ret;
}
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
ar->monitor_vdev_id);
return 0;
}
static int ath10k_stop_cac(struct ath10k *ar)
{
lockdep_assert_held(&ar->conf_mutex);
/* CAC is not running - do nothing */
if (!test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags))
return 0;
clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
ath10k_monitor_stop(ar);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
return 0;
}
static void ath10k_mac_has_radar_iter(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *conf,
void *data)
{
bool *ret = data;
if (!*ret && conf->radar_enabled)
*ret = true;
}
static bool ath10k_mac_has_radar_enabled(struct ath10k *ar)
{
bool has_radar = false;
ieee80211_iter_chan_contexts_atomic(ar->hw,
ath10k_mac_has_radar_iter,
&has_radar);
return has_radar;
}
static void ath10k_recalc_radar_detection(struct ath10k *ar)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
ath10k_stop_cac(ar);
if (!ath10k_mac_has_radar_enabled(ar))
return;
if (ar->num_started_vdevs > 0)
return;
ret = ath10k_start_cac(ar);
if (ret) {
/*
* Not possible to start CAC on current channel so starting
* radiation is not allowed, make this channel DFS_UNAVAILABLE
* by indicating that radar was detected.
*/
ath10k_warn(ar, "failed to start CAC: %d\n", ret);
ieee80211_radar_detected(ar->hw);
}
}
static int ath10k_vdev_stop(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
int ret;
lockdep_assert_held(&ar->conf_mutex);
reinit_completion(&ar->vdev_setup_done);
ret = ath10k_wmi_vdev_stop(ar, arvif->vdev_id);
if (ret) {
ath10k_warn(ar, "failed to stop WMI vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
ret = ath10k_vdev_setup_sync(ar);
if (ret) {
ath10k_warn(ar, "failed to syncronise setup for vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
WARN_ON(ar->num_started_vdevs == 0);
if (ar->num_started_vdevs != 0) {
ar->num_started_vdevs--;
ath10k_recalc_radar_detection(ar);
}
return ret;
}
static int ath10k_vdev_start_restart(struct ath10k_vif *arvif,
const struct cfg80211_chan_def *chandef,
bool restart)
{
struct ath10k *ar = arvif->ar;
struct wmi_vdev_start_request_arg arg = {};
int ret = 0, ret2;
lockdep_assert_held(&ar->conf_mutex);
reinit_completion(&ar->vdev_setup_done);
arg.vdev_id = arvif->vdev_id;
arg.dtim_period = arvif->dtim_period;
arg.bcn_intval = arvif->beacon_interval;
arg.channel.freq = chandef->chan->center_freq;
arg.channel.band_center_freq1 = chandef->center_freq1;
arg.channel.mode = chan_to_phymode(chandef);
arg.channel.min_power = 0;
arg.channel.max_power = chandef->chan->max_power * 2;
arg.channel.max_reg_power = chandef->chan->max_reg_power * 2;
arg.channel.max_antenna_gain = chandef->chan->max_antenna_gain * 2;
if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
arg.ssid = arvif->u.ap.ssid;
arg.ssid_len = arvif->u.ap.ssid_len;
arg.hidden_ssid = arvif->u.ap.hidden_ssid;
/* For now allow DFS for AP mode */
arg.channel.chan_radar =
!!(chandef->chan->flags & IEEE80211_CHAN_RADAR);
} else if (arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
arg.ssid = arvif->vif->bss_conf.ssid;
arg.ssid_len = arvif->vif->bss_conf.ssid_len;
}
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac vdev %d start center_freq %d phymode %s\n",
arg.vdev_id, arg.channel.freq,
ath10k_wmi_phymode_str(arg.channel.mode));
if (restart)
ret = ath10k_wmi_vdev_restart(ar, &arg);
else
ret = ath10k_wmi_vdev_start(ar, &arg);
if (ret) {
ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
arg.vdev_id, ret);
return ret;
}
ret = ath10k_vdev_setup_sync(ar);
if (ret) {
ath10k_warn(ar,
"failed to synchronize setup for vdev %i restart %d: %d\n",
arg.vdev_id, restart, ret);
return ret;
}
ar->num_started_vdevs++;
ath10k_recalc_radar_detection(ar);
ret = ath10k_monitor_recalc(ar);
if (ret) {
ath10k_warn(ar, "mac failed to recalc monitor for vdev %i restart %d: %d\n",
arg.vdev_id, restart, ret);
ret2 = ath10k_vdev_stop(arvif);
if (ret2)
ath10k_warn(ar, "mac failed to stop vdev %i restart %d: %d\n",
arg.vdev_id, restart, ret2);
}
return ret;
}
static int ath10k_vdev_start(struct ath10k_vif *arvif,
const struct cfg80211_chan_def *def)
{
return ath10k_vdev_start_restart(arvif, def, false);
}
static int ath10k_vdev_restart(struct ath10k_vif *arvif,
const struct cfg80211_chan_def *def)
{
return ath10k_vdev_start_restart(arvif, def, true);
}
static int ath10k_mac_setup_bcn_p2p_ie(struct ath10k_vif *arvif,
struct sk_buff *bcn)
{
struct ath10k *ar = arvif->ar;
struct ieee80211_mgmt *mgmt;
const u8 *p2p_ie;
int ret;
if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
return 0;
if (arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO)
return 0;
mgmt = (void *)bcn->data;
p2p_ie = cfg80211_find_vendor_ie(WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P,
mgmt->u.beacon.variable,
bcn->len - (mgmt->u.beacon.variable -
bcn->data));
if (!p2p_ie)
return -ENOENT;
ret = ath10k_wmi_p2p_go_bcn_ie(ar, arvif->vdev_id, p2p_ie);
if (ret) {
ath10k_warn(ar, "failed to submit p2p go bcn ie for vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
return 0;
}
static int ath10k_mac_remove_vendor_ie(struct sk_buff *skb, unsigned int oui,
u8 oui_type, size_t ie_offset)
{
size_t len;
const u8 *next;
const u8 *end;
u8 *ie;
if (WARN_ON(skb->len < ie_offset))
return -EINVAL;
ie = (u8 *)cfg80211_find_vendor_ie(oui, oui_type,
skb->data + ie_offset,
skb->len - ie_offset);
if (!ie)
return -ENOENT;
len = ie[1] + 2;
end = skb->data + skb->len;
next = ie + len;
if (WARN_ON(next > end))
return -EINVAL;
memmove(ie, next, end - next);
skb_trim(skb, skb->len - len);
return 0;
}
static int ath10k_mac_setup_bcn_tmpl(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
struct ieee80211_hw *hw = ar->hw;
struct ieee80211_vif *vif = arvif->vif;
struct ieee80211_mutable_offsets offs = {};
struct sk_buff *bcn;
int ret;
if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))
return 0;
if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
return 0;
bcn = ieee80211_beacon_get_template(hw, vif, &offs);
if (!bcn) {
ath10k_warn(ar, "failed to get beacon template from mac80211\n");
return -EPERM;
}
ret = ath10k_mac_setup_bcn_p2p_ie(arvif, bcn);
if (ret) {
ath10k_warn(ar, "failed to setup p2p go bcn ie: %d\n", ret);
kfree_skb(bcn);
return ret;
}
/* P2P IE is inserted by firmware automatically (as configured above)
* so remove it from the base beacon template to avoid duplicate P2P
* IEs in beacon frames.
*/
ath10k_mac_remove_vendor_ie(bcn, WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P,
offsetof(struct ieee80211_mgmt,
u.beacon.variable));
ret = ath10k_wmi_bcn_tmpl(ar, arvif->vdev_id, offs.tim_offset, bcn, 0,
0, NULL, 0);
kfree_skb(bcn);
if (ret) {
ath10k_warn(ar, "failed to submit beacon template command: %d\n",
ret);
return ret;
}
return 0;
}
static int ath10k_mac_setup_prb_tmpl(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
struct ieee80211_hw *hw = ar->hw;
struct ieee80211_vif *vif = arvif->vif;
struct sk_buff *prb;
int ret;
if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))
return 0;
if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
return 0;
prb = ieee80211_proberesp_get(hw, vif);
if (!prb) {
ath10k_warn(ar, "failed to get probe resp template from mac80211\n");
return -EPERM;
}
ret = ath10k_wmi_prb_tmpl(ar, arvif->vdev_id, prb);
kfree_skb(prb);
if (ret) {
ath10k_warn(ar, "failed to submit probe resp template command: %d\n",
ret);
return ret;
}
return 0;
}
static int ath10k_mac_vif_fix_hidden_ssid(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
struct cfg80211_chan_def def;
int ret;
/* When originally vdev is started during assign_vif_chanctx() some
* information is missing, notably SSID. Firmware revisions with beacon
* offloading require the SSID to be provided during vdev (re)start to
* handle hidden SSID properly.
*
* Vdev restart must be done after vdev has been both started and
* upped. Otherwise some firmware revisions (at least 10.2) fail to
* deliver vdev restart response event causing timeouts during vdev
* syncing in ath10k.
*
* Note: The vdev down/up and template reinstallation could be skipped
* since only wmi-tlv firmware are known to have beacon offload and
* wmi-tlv doesn't seem to misbehave like 10.2 wrt vdev restart
* response delivery. It's probably more robust to keep it as is.
*/
if (!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map))
return 0;
if (WARN_ON(!arvif->is_started))
return -EINVAL;
if (WARN_ON(!arvif->is_up))
return -EINVAL;
if (WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def)))
return -EINVAL;
ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
if (ret) {
ath10k_warn(ar, "failed to bring down ap vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
/* Vdev down reset beacon & presp templates. Reinstall them. Otherwise
* firmware will crash upon vdev up.
*/
ret = ath10k_mac_setup_bcn_tmpl(arvif);
if (ret) {
ath10k_warn(ar, "failed to update beacon template: %d\n", ret);
return ret;
}
ret = ath10k_mac_setup_prb_tmpl(arvif);
if (ret) {
ath10k_warn(ar, "failed to update presp template: %d\n", ret);
return ret;
}
ret = ath10k_vdev_restart(arvif, &def);
if (ret) {
ath10k_warn(ar, "failed to restart ap vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
arvif->bssid);
if (ret) {
ath10k_warn(ar, "failed to bring up ap vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
return 0;
}
static void ath10k_control_beaconing(struct ath10k_vif *arvif,
struct ieee80211_bss_conf *info)
{
struct ath10k *ar = arvif->ar;
int ret = 0;
lockdep_assert_held(&arvif->ar->conf_mutex);
if (!info->enable_beacon) {
ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
if (ret)
ath10k_warn(ar, "failed to down vdev_id %i: %d\n",
arvif->vdev_id, ret);
arvif->is_up = false;
spin_lock_bh(&arvif->ar->data_lock);
ath10k_mac_vif_beacon_free(arvif);
spin_unlock_bh(&arvif->ar->data_lock);
return;
}
arvif->tx_seq_no = 0x1000;
arvif->aid = 0;
ether_addr_copy(arvif->bssid, info->bssid);
ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
arvif->bssid);
if (ret) {
ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
arvif->vdev_id, ret);
return;
}
arvif->is_up = true;
ret = ath10k_mac_vif_fix_hidden_ssid(arvif);
if (ret) {
ath10k_warn(ar, "failed to fix hidden ssid for vdev %i, expect trouble: %d\n",
arvif->vdev_id, ret);
return;
}
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
}
static void ath10k_control_ibss(struct ath10k_vif *arvif,
struct ieee80211_bss_conf *info,
const u8 self_peer[ETH_ALEN])
{
struct ath10k *ar = arvif->ar;
u32 vdev_param;
int ret = 0;
lockdep_assert_held(&arvif->ar->conf_mutex);
if (!info->ibss_joined) {
if (is_zero_ether_addr(arvif->bssid))
return;
eth_zero_addr(arvif->bssid);
return;
}
vdev_param = arvif->ar->wmi.vdev_param->atim_window;
ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
ATH10K_DEFAULT_ATIM);
if (ret)
ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
arvif->vdev_id, ret);
}
static int ath10k_mac_vif_recalc_ps_wake_threshold(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
u32 param;
u32 value;
int ret;
lockdep_assert_held(&arvif->ar->conf_mutex);
if (arvif->u.sta.uapsd)
value = WMI_STA_PS_TX_WAKE_THRESHOLD_NEVER;
else
value = WMI_STA_PS_TX_WAKE_THRESHOLD_ALWAYS;
param = WMI_STA_PS_PARAM_TX_WAKE_THRESHOLD;
ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param, value);
if (ret) {
ath10k_warn(ar, "failed to submit ps wake threshold %u on vdev %i: %d\n",
value, arvif->vdev_id, ret);
return ret;
}
return 0;
}
static int ath10k_mac_vif_recalc_ps_poll_count(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
u32 param;
u32 value;
int ret;
lockdep_assert_held(&arvif->ar->conf_mutex);
if (arvif->u.sta.uapsd)
value = WMI_STA_PS_PSPOLL_COUNT_UAPSD;
else
value = WMI_STA_PS_PSPOLL_COUNT_NO_MAX;
param = WMI_STA_PS_PARAM_PSPOLL_COUNT;
ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
param, value);
if (ret) {
ath10k_warn(ar, "failed to submit ps poll count %u on vdev %i: %d\n",
value, arvif->vdev_id, ret);
return ret;
}
return 0;
}
static int ath10k_mac_ps_vif_count(struct ath10k *ar)
{
struct ath10k_vif *arvif;
int num = 0;
lockdep_assert_held(&ar->conf_mutex);
list_for_each_entry(arvif, &ar->arvifs, list)
if (arvif->ps)
num++;
return num;
}
static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
struct ieee80211_vif *vif = arvif->vif;
struct ieee80211_conf *conf = &ar->hw->conf;
enum wmi_sta_powersave_param param;
enum wmi_sta_ps_mode psmode;
int ret;
int ps_timeout;
bool enable_ps;
lockdep_assert_held(&arvif->ar->conf_mutex);
if (arvif->vif->type != NL80211_IFTYPE_STATION)
return 0;
enable_ps = arvif->ps;
if (enable_ps && ath10k_mac_ps_vif_count(ar) > 1 &&
!test_bit(ATH10K_FW_FEATURE_MULTI_VIF_PS_SUPPORT,
ar->fw_features)) {
ath10k_warn(ar, "refusing to enable ps on vdev %i: not supported by fw\n",
arvif->vdev_id);
enable_ps = false;
}
if (enable_ps) {
psmode = WMI_STA_PS_MODE_ENABLED;
param = WMI_STA_PS_PARAM_INACTIVITY_TIME;
ps_timeout = conf->dynamic_ps_timeout;
if (ps_timeout == 0) {
/* Firmware doesn't like 0 */
ps_timeout = ieee80211_tu_to_usec(
vif->bss_conf.beacon_int) / 1000;
}
ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
ps_timeout);
if (ret) {
ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
arvif->vdev_id, ret);
return ret;
}
} else {
psmode = WMI_STA_PS_MODE_DISABLED;
}
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
arvif->vdev_id, psmode ? "enable" : "disable");
ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
if (ret) {
ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
psmode, arvif->vdev_id, ret);
return ret;
}
return 0;
}
static int ath10k_mac_vif_disable_keepalive(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
struct wmi_sta_keepalive_arg arg = {};
int ret;
lockdep_assert_held(&arvif->ar->conf_mutex);
if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
return 0;
if (!test_bit(WMI_SERVICE_STA_KEEP_ALIVE, ar->wmi.svc_map))
return 0;
/* Some firmware revisions have a bug and ignore the `enabled` field.
* Instead use the interval to disable the keepalive.
*/
arg.vdev_id = arvif->vdev_id;
arg.enabled = 1;
arg.method = WMI_STA_KEEPALIVE_METHOD_NULL_FRAME;
arg.interval = WMI_STA_KEEPALIVE_INTERVAL_DISABLE;
ret = ath10k_wmi_sta_keepalive(ar, &arg);
if (ret) {
ath10k_warn(ar, "failed to submit keepalive on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
return 0;
}
static void ath10k_mac_vif_ap_csa_count_down(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
struct ieee80211_vif *vif = arvif->vif;
int ret;
lockdep_assert_held(&arvif->ar->conf_mutex);
if (WARN_ON(!test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map)))
return;
if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
return;
if (!vif->csa_active)
return;
if (!arvif->is_up)
return;
if (!ieee80211_csa_is_complete(vif)) {
ieee80211_csa_update_counter(vif);
ret = ath10k_mac_setup_bcn_tmpl(arvif);
if (ret)
ath10k_warn(ar, "failed to update bcn tmpl during csa: %d\n",
ret);
ret = ath10k_mac_setup_prb_tmpl(arvif);
if (ret)
ath10k_warn(ar, "failed to update prb tmpl during csa: %d\n",
ret);
} else {
ieee80211_csa_finish(vif);
}
}
static void ath10k_mac_vif_ap_csa_work(struct work_struct *work)
{
struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
ap_csa_work);
struct ath10k *ar = arvif->ar;
mutex_lock(&ar->conf_mutex);
ath10k_mac_vif_ap_csa_count_down(arvif);
mutex_unlock(&ar->conf_mutex);
}
static void ath10k_mac_handle_beacon_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct sk_buff *skb = data;
struct ieee80211_mgmt *mgmt = (void *)skb->data;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
if (vif->type != NL80211_IFTYPE_STATION)
return;
if (!ether_addr_equal(mgmt->bssid, vif->bss_conf.bssid))
return;
cancel_delayed_work(&arvif->connection_loss_work);
}
void ath10k_mac_handle_beacon(struct ath10k *ar, struct sk_buff *skb)
{
ieee80211_iterate_active_interfaces_atomic(ar->hw,
IEEE80211_IFACE_ITER_NORMAL,
ath10k_mac_handle_beacon_iter,
skb);
}
static void ath10k_mac_handle_beacon_miss_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
u32 *vdev_id = data;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct ath10k *ar = arvif->ar;
struct ieee80211_hw *hw = ar->hw;
if (arvif->vdev_id != *vdev_id)
return;
if (!arvif->is_up)
return;
ieee80211_beacon_loss(vif);
/* Firmware doesn't report beacon loss events repeatedly. If AP probe
* (done by mac80211) succeeds but beacons do not resume then it
* doesn't make sense to continue operation. Queue connection loss work
* which can be cancelled when beacon is received.
*/
ieee80211_queue_delayed_work(hw, &arvif->connection_loss_work,
ATH10K_CONNECTION_LOSS_HZ);
}
void ath10k_mac_handle_beacon_miss(struct ath10k *ar, u32 vdev_id)
{
ieee80211_iterate_active_interfaces_atomic(ar->hw,
IEEE80211_IFACE_ITER_NORMAL,
ath10k_mac_handle_beacon_miss_iter,
&vdev_id);
}
static void ath10k_mac_vif_sta_connection_loss_work(struct work_struct *work)
{
struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
connection_loss_work.work);
struct ieee80211_vif *vif = arvif->vif;
if (!arvif->is_up)
return;
ieee80211_connection_loss(vif);
}
/**********************/
/* Station management */
/**********************/
static u32 ath10k_peer_assoc_h_listen_intval(struct ath10k *ar,
struct ieee80211_vif *vif)
{
/* Some firmware revisions have unstable STA powersave when listen
* interval is set too high (e.g. 5). The symptoms are firmware doesn't
* generate NullFunc frames properly even if buffered frames have been
* indicated in Beacon TIM. Firmware would seldom wake up to pull
* buffered frames. Often pinging the device from AP would simply fail.
*
* As a workaround set it to 1.
*/
if (vif->type == NL80211_IFTYPE_STATION)
return 1;
return ar->hw->conf.listen_interval;
}
static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct wmi_peer_assoc_complete_arg *arg)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
u32 aid;
lockdep_assert_held(&ar->conf_mutex);
if (vif->type == NL80211_IFTYPE_STATION)
aid = vif->bss_conf.aid;
else
aid = sta->aid;
ether_addr_copy(arg->addr, sta->addr);
arg->vdev_id = arvif->vdev_id;
arg->peer_aid = aid;
arg->peer_flags |= WMI_PEER_AUTH;
arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
arg->peer_num_spatial_streams = 1;
arg->peer_caps = vif->bss_conf.assoc_capability;
}
static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
struct ieee80211_vif *vif,
struct wmi_peer_assoc_complete_arg *arg)
{
struct ieee80211_bss_conf *info = &vif->bss_conf;
struct cfg80211_chan_def def;
struct cfg80211_bss *bss;
const u8 *rsnie = NULL;
const u8 *wpaie = NULL;
lockdep_assert_held(&ar->conf_mutex);
if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
return;
bss = cfg80211_get_bss(ar->hw->wiphy, def.chan, info->bssid, NULL, 0,
IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
if (bss) {
const struct cfg80211_bss_ies *ies;
rcu_read_lock();
rsnie = ieee80211_bss_get_ie(bss, WLAN_EID_RSN);
ies = rcu_dereference(bss->ies);
wpaie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
WLAN_OUI_TYPE_MICROSOFT_WPA,
ies->data,
ies->len);
rcu_read_unlock();
cfg80211_put_bss(ar->hw->wiphy, bss);
}
/* FIXME: base on RSN IE/WPA IE is a correct idea? */
if (rsnie || wpaie) {
ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
}
if (wpaie) {
ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY;
}
}
static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct wmi_peer_assoc_complete_arg *arg)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
struct cfg80211_chan_def def;
const struct ieee80211_supported_band *sband;
const struct ieee80211_rate *rates;
enum ieee80211_band band;
u32 ratemask;
u8 rate;
int i;
lockdep_assert_held(&ar->conf_mutex);
if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
return;
band = def.chan->band;
sband = ar->hw->wiphy->bands[band];
ratemask = sta->supp_rates[band];
ratemask &= arvif->bitrate_mask.control[band].legacy;
rates = sband->bitrates;
rateset->num_rates = 0;
for (i = 0; i < 32; i++, ratemask >>= 1, rates++) {
if (!(ratemask & 1))
continue;
rate = ath10k_mac_bitrate_to_rate(rates->bitrate);
rateset->rates[rateset->num_rates] = rate;
rateset->num_rates++;
}
}
static bool
ath10k_peer_assoc_h_ht_masked(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN])
{
int nss;
for (nss = 0; nss < IEEE80211_HT_MCS_MASK_LEN; nss++)
if (ht_mcs_mask[nss])
return false;
return true;
}
static bool
ath10k_peer_assoc_h_vht_masked(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
{
int nss;
for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++)
if (vht_mcs_mask[nss])
return false;
return true;
}
static void ath10k_peer_assoc_h_ht(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct wmi_peer_assoc_complete_arg *arg)
{
const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct cfg80211_chan_def def;
enum ieee80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
int i, n, max_nss;
u32 stbc;
lockdep_assert_held(&ar->conf_mutex);
if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
return;
if (!ht_cap->ht_supported)
return;
band = def.chan->band;
ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
if (ath10k_peer_assoc_h_ht_masked(ht_mcs_mask) &&
ath10k_peer_assoc_h_vht_masked(vht_mcs_mask))
return;
arg->peer_flags |= WMI_PEER_HT;
arg->peer_max_mpdu = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
ht_cap->ampdu_factor)) - 1;
arg->peer_mpdu_density =
ath10k_parse_mpdudensity(ht_cap->ampdu_density);
arg->peer_ht_caps = ht_cap->cap;
arg->peer_rate_caps |= WMI_RC_HT_FLAG;
if (ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING)
arg->peer_flags |= WMI_PEER_LDPC;
if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) {
arg->peer_flags |= WMI_PEER_40MHZ;
arg->peer_rate_caps |= WMI_RC_CW40_FLAG;
}
if (arvif->bitrate_mask.control[band].gi != NL80211_TXRATE_FORCE_LGI) {
if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
arg->peer_rate_caps |= WMI_RC_SGI_FLAG;
if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
arg->peer_rate_caps |= WMI_RC_SGI_FLAG;
}
if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) {
arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG;
arg->peer_flags |= WMI_PEER_STBC;
}
if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) {
stbc = ht_cap->cap & IEEE80211_HT_CAP_RX_STBC;
stbc = stbc >> IEEE80211_HT_CAP_RX_STBC_SHIFT;
stbc = stbc << WMI_RC_RX_STBC_FLAG_S;
arg->peer_rate_caps |= stbc;
arg->peer_flags |= WMI_PEER_STBC;
}
if (ht_cap->mcs.rx_mask[1] && ht_cap->mcs.rx_mask[2])
arg->peer_rate_caps |= WMI_RC_TS_FLAG;
else if (ht_cap->mcs.rx_mask[1])
arg->peer_rate_caps |= WMI_RC_DS_FLAG;
for (i = 0, n = 0, max_nss = 0; i < IEEE80211_HT_MCS_MASK_LEN * 8; i++)
if ((ht_cap->mcs.rx_mask[i / 8] & BIT(i % 8)) &&
(ht_mcs_mask[i / 8] & BIT(i % 8))) {
max_nss = (i / 8) + 1;
arg->peer_ht_rates.rates[n++] = i;
}
/*
* This is a workaround for HT-enabled STAs which break the spec
* and have no HT capabilities RX mask (no HT RX MCS map).
*
* As per spec, in section 20.3.5 Modulation and coding scheme (MCS),
* MCS 0 through 7 are mandatory in 20MHz with 800 ns GI at all STAs.
*
* Firmware asserts if such situation occurs.
*/
if (n == 0) {
arg->peer_ht_rates.num_rates = 8;
for (i = 0; i < arg->peer_ht_rates.num_rates; i++)
arg->peer_ht_rates.rates[i] = i;
} else {
arg->peer_ht_rates.num_rates = n;
arg->peer_num_spatial_streams = max_nss;
}
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
arg->addr,
arg->peer_ht_rates.num_rates,
arg->peer_num_spatial_streams);
}
static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
struct ath10k_vif *arvif,
struct ieee80211_sta *sta)
{
u32 uapsd = 0;
u32 max_sp = 0;
int ret = 0;
lockdep_assert_held(&ar->conf_mutex);
if (sta->wme && sta->uapsd_queues) {
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
sta->uapsd_queues, sta->max_sp);
if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
uapsd |= WMI_AP_PS_UAPSD_AC3_DELIVERY_EN |
WMI_AP_PS_UAPSD_AC3_TRIGGER_EN;
if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
uapsd |= WMI_AP_PS_UAPSD_AC2_DELIVERY_EN |
WMI_AP_PS_UAPSD_AC2_TRIGGER_EN;
if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
uapsd |= WMI_AP_PS_UAPSD_AC1_DELIVERY_EN |
WMI_AP_PS_UAPSD_AC1_TRIGGER_EN;
if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
uapsd |= WMI_AP_PS_UAPSD_AC0_DELIVERY_EN |
WMI_AP_PS_UAPSD_AC0_TRIGGER_EN;
if (sta->max_sp < MAX_WMI_AP_PS_PEER_PARAM_MAX_SP)
max_sp = sta->max_sp;
ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
sta->addr,
WMI_AP_PS_PEER_PARAM_UAPSD,
uapsd);
if (ret) {
ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
sta->addr,
WMI_AP_PS_PEER_PARAM_MAX_SP,
max_sp);
if (ret) {
ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
/* TODO setup this based on STA listen interval and
beacon interval. Currently we don't know
sta->listen_interval - mac80211 patch required.
Currently use 10 seconds */
ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
10);
if (ret) {
ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
}
return 0;
}
static u16
ath10k_peer_assoc_h_vht_limit(u16 tx_mcs_set,
const u16 vht_mcs_limit[NL80211_VHT_NSS_MAX])
{
int idx_limit;
int nss;
u16 mcs_map;
u16 mcs;
for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
mcs_map = ath10k_mac_get_max_vht_mcs_map(tx_mcs_set, nss) &
vht_mcs_limit[nss];
if (mcs_map)
idx_limit = fls(mcs_map) - 1;
else
idx_limit = -1;
switch (idx_limit) {
case 0: /* fall through */
case 1: /* fall through */
case 2: /* fall through */
case 3: /* fall through */
case 4: /* fall through */
case 5: /* fall through */
case 6: /* fall through */
default:
/* see ath10k_mac_can_set_bitrate_mask() */
WARN_ON(1);
/* fall through */
case -1:
mcs = IEEE80211_VHT_MCS_NOT_SUPPORTED;
break;
case 7:
mcs = IEEE80211_VHT_MCS_SUPPORT_0_7;
break;
case 8:
mcs = IEEE80211_VHT_MCS_SUPPORT_0_8;
break;
case 9:
mcs = IEEE80211_VHT_MCS_SUPPORT_0_9;
break;
}
tx_mcs_set &= ~(0x3 << (nss * 2));
tx_mcs_set |= mcs << (nss * 2);
}
return tx_mcs_set;
}
static void ath10k_peer_assoc_h_vht(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct wmi_peer_assoc_complete_arg *arg)
{
const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct cfg80211_chan_def def;
enum ieee80211_band band;
const u16 *vht_mcs_mask;
u8 ampdu_factor;
if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
return;
if (!vht_cap->vht_supported)
return;
band = def.chan->band;
vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
if (ath10k_peer_assoc_h_vht_masked(vht_mcs_mask))
return;
arg->peer_flags |= WMI_PEER_VHT;
if (def.chan->band == IEEE80211_BAND_2GHZ)
arg->peer_flags |= WMI_PEER_VHT_2G;
arg->peer_vht_caps = vht_cap->cap;
ampdu_factor = (vht_cap->cap &
IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
/* Workaround: Some Netgear/Linksys 11ac APs set Rx A-MPDU factor to
* zero in VHT IE. Using it would result in degraded throughput.
* arg->peer_max_mpdu at this point contains HT max_mpdu so keep
* it if VHT max_mpdu is smaller. */
arg->peer_max_mpdu = max(arg->peer_max_mpdu,
(1U << (IEEE80211_HT_MAX_AMPDU_FACTOR +
ampdu_factor)) - 1);
if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
arg->peer_flags |= WMI_PEER_80MHZ;
arg->peer_vht_rates.rx_max_rate =
__le16_to_cpu(vht_cap->vht_mcs.rx_highest);
arg->peer_vht_rates.rx_mcs_set =
__le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
arg->peer_vht_rates.tx_max_rate =
__le16_to_cpu(vht_cap->vht_mcs.tx_highest);
arg->peer_vht_rates.tx_mcs_set = ath10k_peer_assoc_h_vht_limit(
__le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map), vht_mcs_mask);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
sta->addr, arg->peer_max_mpdu, arg->peer_flags);
}
static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct wmi_peer_assoc_complete_arg *arg)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
switch (arvif->vdev_type) {
case WMI_VDEV_TYPE_AP:
if (sta->wme)
arg->peer_flags |= WMI_PEER_QOS;
if (sta->wme && sta->uapsd_queues) {
arg->peer_flags |= WMI_PEER_APSD;
arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
}
break;
case WMI_VDEV_TYPE_STA:
if (vif->bss_conf.qos)
arg->peer_flags |= WMI_PEER_QOS;
break;
case WMI_VDEV_TYPE_IBSS:
if (sta->wme)
arg->peer_flags |= WMI_PEER_QOS;
break;
default:
break;
}
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM qos %d\n",
sta->addr, !!(arg->peer_flags & WMI_PEER_QOS));
}
static bool ath10k_mac_sta_has_ofdm_only(struct ieee80211_sta *sta)
{
return sta->supp_rates[IEEE80211_BAND_2GHZ] >>
ATH10K_MAC_FIRST_OFDM_RATE_IDX;
}
static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct wmi_peer_assoc_complete_arg *arg)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct cfg80211_chan_def def;
enum ieee80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
enum wmi_phy_mode phymode = MODE_UNKNOWN;
if (WARN_ON(ath10k_mac_vif_chan(vif, &def)))
return;
band = def.chan->band;
ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
switch (band) {
case IEEE80211_BAND_2GHZ:
if (sta->vht_cap.vht_supported &&
!ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
phymode = MODE_11AC_VHT40;
else
phymode = MODE_11AC_VHT20;
} else if (sta->ht_cap.ht_supported &&
!ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
phymode = MODE_11NG_HT40;
else
phymode = MODE_11NG_HT20;
} else if (ath10k_mac_sta_has_ofdm_only(sta)) {
phymode = MODE_11G;
} else {
phymode = MODE_11B;
}
break;
case IEEE80211_BAND_5GHZ:
/*
* Check VHT first.
*/
if (sta->vht_cap.vht_supported &&
!ath10k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
phymode = MODE_11AC_VHT80;
else if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
phymode = MODE_11AC_VHT40;
else if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
phymode = MODE_11AC_VHT20;
} else if (sta->ht_cap.ht_supported &&
!ath10k_peer_assoc_h_ht_masked(ht_mcs_mask)) {
if (sta->bandwidth >= IEEE80211_STA_RX_BW_40)
phymode = MODE_11NA_HT40;
else
phymode = MODE_11NA_HT20;
} else {
phymode = MODE_11A;
}
break;
default:
break;
}
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
sta->addr, ath10k_wmi_phymode_str(phymode));
arg->peer_phymode = phymode;
WARN_ON(phymode == MODE_UNKNOWN);
}
static int ath10k_peer_assoc_prepare(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct wmi_peer_assoc_complete_arg *arg)
{
lockdep_assert_held(&ar->conf_mutex);
memset(arg, 0, sizeof(*arg));
ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
ath10k_peer_assoc_h_crypto(ar, vif, arg);
ath10k_peer_assoc_h_rates(ar, vif, sta, arg);
ath10k_peer_assoc_h_ht(ar, vif, sta, arg);
ath10k_peer_assoc_h_vht(ar, vif, sta, arg);
ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
return 0;
}
static const u32 ath10k_smps_map[] = {
[WLAN_HT_CAP_SM_PS_STATIC] = WMI_PEER_SMPS_STATIC,
[WLAN_HT_CAP_SM_PS_DYNAMIC] = WMI_PEER_SMPS_DYNAMIC,
[WLAN_HT_CAP_SM_PS_INVALID] = WMI_PEER_SMPS_PS_NONE,
[WLAN_HT_CAP_SM_PS_DISABLED] = WMI_PEER_SMPS_PS_NONE,
};
static int ath10k_setup_peer_smps(struct ath10k *ar, struct ath10k_vif *arvif,
const u8 *addr,
const struct ieee80211_sta_ht_cap *ht_cap)
{
int smps;
if (!ht_cap->ht_supported)
return 0;
smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS;
smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT;
if (smps >= ARRAY_SIZE(ath10k_smps_map))
return -EINVAL;
return ath10k_wmi_peer_set_param(ar, arvif->vdev_id, addr,
WMI_PEER_SMPS_STATE,
ath10k_smps_map[smps]);
}
static int ath10k_mac_vif_recalc_txbf(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta_vht_cap vht_cap)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
int ret;
u32 param;
u32 value;
if (!(ar->vht_cap_info &
(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE |
IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
return 0;
param = ar->wmi.vdev_param->txbf;
value = 0;
if (WARN_ON(param == WMI_VDEV_PARAM_UNSUPPORTED))
return 0;
/* The following logic is correct. If a remote STA advertises support
* for being a beamformer then we should enable us being a beamformee.
*/
if (ar->vht_cap_info &
(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
if (vht_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)
value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFEE;
if (vht_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)
value |= WMI_VDEV_PARAM_TXBF_MU_TX_BFEE;
}
if (ar->vht_cap_info &
(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
if (vht_cap.cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE)
value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFER;
if (vht_cap.cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)
value |= WMI_VDEV_PARAM_TXBF_MU_TX_BFER;
}
if (value & WMI_VDEV_PARAM_TXBF_MU_TX_BFEE)
value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFEE;
if (value & WMI_VDEV_PARAM_TXBF_MU_TX_BFER)
value |= WMI_VDEV_PARAM_TXBF_SU_TX_BFER;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param, value);
if (ret) {
ath10k_warn(ar, "failed to submit vdev param txbf 0x%x: %d\n",
value, ret);
return ret;
}
return 0;
}
/* can be called only in mac80211 callbacks due to `key_count` usage */
static void ath10k_bss_assoc(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct ieee80211_sta_ht_cap ht_cap;
struct ieee80211_sta_vht_cap vht_cap;
struct wmi_peer_assoc_complete_arg peer_arg;
struct ieee80211_sta *ap_sta;
int ret;
lockdep_assert_held(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
arvif->vdev_id, arvif->bssid, arvif->aid);
rcu_read_lock();
ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
if (!ap_sta) {
ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
bss_conf->bssid, arvif->vdev_id);
rcu_read_unlock();
return;
}
/* ap_sta must be accessed only within rcu section which must be left
* before calling ath10k_setup_peer_smps() which might sleep. */
ht_cap = ap_sta->ht_cap;
vht_cap = ap_sta->vht_cap;
ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
if (ret) {
ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
bss_conf->bssid, arvif->vdev_id, ret);
rcu_read_unlock();
return;
}
rcu_read_unlock();
ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
if (ret) {
ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
bss_conf->bssid, arvif->vdev_id, ret);
return;
}
ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
if (ret) {
ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
arvif->vdev_id, ret);
return;
}
ret = ath10k_mac_vif_recalc_txbf(ar, vif, vht_cap);
if (ret) {
ath10k_warn(ar, "failed to recalc txbf for vdev %i on bss %pM: %d\n",
arvif->vdev_id, bss_conf->bssid, ret);
return;
}
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac vdev %d up (associated) bssid %pM aid %d\n",
arvif->vdev_id, bss_conf->bssid, bss_conf->aid);
WARN_ON(arvif->is_up);
arvif->aid = bss_conf->aid;
ether_addr_copy(arvif->bssid, bss_conf->bssid);
ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
if (ret) {
ath10k_warn(ar, "failed to set vdev %d up: %d\n",
arvif->vdev_id, ret);
return;
}
arvif->is_up = true;
/* Workaround: Some firmware revisions (tested with qca6174
* WLAN.RM.2.0-00073) have buggy powersave state machine and must be
* poked with peer param command.
*/
ret = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, arvif->bssid,
WMI_PEER_DUMMY_VAR, 1);
if (ret) {
ath10k_warn(ar, "failed to poke peer %pM param for ps workaround on vdev %i: %d\n",
arvif->bssid, arvif->vdev_id, ret);
return;
}
}
static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct ieee80211_sta_vht_cap vht_cap = {};
int ret;
lockdep_assert_held(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
arvif->vdev_id, arvif->bssid);
ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
if (ret)
ath10k_warn(ar, "faield to down vdev %i: %d\n",
arvif->vdev_id, ret);
arvif->def_wep_key_idx = -1;
ret = ath10k_mac_vif_recalc_txbf(ar, vif, vht_cap);
if (ret) {
ath10k_warn(ar, "failed to recalc txbf for vdev %i: %d\n",
arvif->vdev_id, ret);
return;
}
arvif->is_up = false;
cancel_delayed_work_sync(&arvif->connection_loss_work);
}
static int ath10k_station_assoc(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
bool reassoc)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct wmi_peer_assoc_complete_arg peer_arg;
int ret = 0;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
if (ret) {
ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
sta->addr, arvif->vdev_id, ret);
return ret;
}
ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
if (ret) {
ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
sta->addr, arvif->vdev_id, ret);
return ret;
}
/* Re-assoc is run only to update supported rates for given station. It
* doesn't make much sense to reconfigure the peer completely.
*/
if (!reassoc) {
ret = ath10k_setup_peer_smps(ar, arvif, sta->addr,
&sta->ht_cap);
if (ret) {
ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
arvif->vdev_id, ret);
return ret;
}
ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta);
if (ret) {
ath10k_warn(ar, "failed to set qos params for STA %pM for vdev %i: %d\n",
sta->addr, arvif->vdev_id, ret);
return ret;
}
if (!sta->wme) {
arvif->num_legacy_stations++;
ret = ath10k_recalc_rtscts_prot(arvif);
if (ret) {
ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
arvif->vdev_id, ret);
return ret;
}
}
/* Plumb cached keys only for static WEP */
if (arvif->def_wep_key_idx != -1) {
ret = ath10k_install_peer_wep_keys(arvif, sta->addr);
if (ret) {
ath10k_warn(ar, "failed to install peer wep keys for vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
}
}
return ret;
}
static int ath10k_station_disassoc(struct ath10k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
int ret = 0;
lockdep_assert_held(&ar->conf_mutex);
if (!sta->wme) {
arvif->num_legacy_stations--;
ret = ath10k_recalc_rtscts_prot(arvif);
if (ret) {
ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
arvif->vdev_id, ret);
return ret;
}
}
ret = ath10k_clear_peer_keys(arvif, sta->addr);
if (ret) {
ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
return ret;
}
/**************/
/* Regulatory */
/**************/
static int ath10k_update_channel_list(struct ath10k *ar)
{
struct ieee80211_hw *hw = ar->hw;
struct ieee80211_supported_band **bands;
enum ieee80211_band band;
struct ieee80211_channel *channel;
struct wmi_scan_chan_list_arg arg = {0};
struct wmi_channel_arg *ch;
bool passive;
int len;
int ret;
int i;
lockdep_assert_held(&ar->conf_mutex);
bands = hw->wiphy->bands;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (!bands[band])
continue;
for (i = 0; i < bands[band]->n_channels; i++) {
if (bands[band]->channels[i].flags &
IEEE80211_CHAN_DISABLED)
continue;
arg.n_channels++;
}
}
len = sizeof(struct wmi_channel_arg) * arg.n_channels;
arg.channels = kzalloc(len, GFP_KERNEL|__GFP_REPEAT|__GFP_HIGH);
if (!arg.channels)
return -ENOMEM;
ch = arg.channels;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (!bands[band])
continue;
for (i = 0; i < bands[band]->n_channels; i++) {
channel = &bands[band]->channels[i];
if (channel->flags & IEEE80211_CHAN_DISABLED)
continue;
ch->allow_ht = true;
/* FIXME: when should we really allow VHT? */
ch->allow_vht = true;
ch->allow_ibss =
!(channel->flags & IEEE80211_CHAN_NO_IR);
ch->ht40plus =
!(channel->flags & IEEE80211_CHAN_NO_HT40PLUS);
ch->chan_radar =
!!(channel->flags & IEEE80211_CHAN_RADAR);
passive = channel->flags & IEEE80211_CHAN_NO_IR;
ch->passive = passive;
ch->freq = channel->center_freq;
ch->band_center_freq1 = channel->center_freq;
ch->min_power = 0;
ch->max_power = channel->max_power * 2;
ch->max_reg_power = channel->max_reg_power * 2;
ch->max_antenna_gain = channel->max_antenna_gain * 2;
ch->reg_class_id = 0; /* FIXME */
/* FIXME: why use only legacy modes, why not any
* HT/VHT modes? Would that even make any
* difference? */
if (channel->band == IEEE80211_BAND_2GHZ)
ch->mode = MODE_11G;
else
ch->mode = MODE_11A;
if (WARN_ON_ONCE(ch->mode == MODE_UNKNOWN))
continue;
ath10k_dbg(ar, ATH10K_DBG_WMI,
"mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
ch - arg.channels, arg.n_channels,
ch->freq, ch->max_power, ch->max_reg_power,
ch->max_antenna_gain, ch->mode);
ch++;
}
}
ret = ath10k_wmi_scan_chan_list(ar, &arg);
kfree(arg.channels);
return ret;
}
static enum wmi_dfs_region
ath10k_mac_get_dfs_region(enum nl80211_dfs_regions dfs_region)
{
switch (dfs_region) {
case NL80211_DFS_UNSET:
return WMI_UNINIT_DFS_DOMAIN;
case NL80211_DFS_FCC:
return WMI_FCC_DFS_DOMAIN;
case NL80211_DFS_ETSI:
return WMI_ETSI_DFS_DOMAIN;
case NL80211_DFS_JP:
return WMI_MKK4_DFS_DOMAIN;
}
return WMI_UNINIT_DFS_DOMAIN;
}
static void ath10k_regd_update(struct ath10k *ar)
{
struct reg_dmn_pair_mapping *regpair;
int ret;
enum wmi_dfs_region wmi_dfs_reg;
enum nl80211_dfs_regions nl_dfs_reg;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_update_channel_list(ar);
if (ret)
ath10k_warn(ar, "failed to update channel list: %d\n", ret);
regpair = ar->ath_common.regulatory.regpair;
if (config_enabled(CPTCFG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
nl_dfs_reg = ar->dfs_detector->region;
wmi_dfs_reg = ath10k_mac_get_dfs_region(nl_dfs_reg);
} else {
wmi_dfs_reg = WMI_UNINIT_DFS_DOMAIN;
}
/* Target allows setting up per-band regdomain but ath_common provides
* a combined one only */
ret = ath10k_wmi_pdev_set_regdomain(ar,
regpair->reg_domain,
regpair->reg_domain, /* 2ghz */
regpair->reg_domain, /* 5ghz */
regpair->reg_2ghz_ctl,
regpair->reg_5ghz_ctl,
wmi_dfs_reg);
if (ret)
ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
}
static void ath10k_reg_notifier(struct wiphy *wiphy,
struct regulatory_request *request)
{
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
struct ath10k *ar = hw->priv;
bool result;
ath_reg_notifier_apply(wiphy, request, &ar->ath_common.regulatory);
if (config_enabled(CPTCFG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
request->dfs_region);
result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
request->dfs_region);
if (!result)
ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
request->dfs_region);
}
mutex_lock(&ar->conf_mutex);
if (ar->state == ATH10K_STATE_ON)
ath10k_regd_update(ar);
mutex_unlock(&ar->conf_mutex);
}
/***************/
/* TX handlers */
/***************/
void ath10k_mac_tx_lock(struct ath10k *ar, int reason)
{
lockdep_assert_held(&ar->htt.tx_lock);
WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
ar->tx_paused |= BIT(reason);
ieee80211_stop_queues(ar->hw);
}
static void ath10k_mac_tx_unlock_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct ath10k *ar = data;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
if (arvif->tx_paused)
return;
ieee80211_wake_queue(ar->hw, arvif->vdev_id);
}
void ath10k_mac_tx_unlock(struct ath10k *ar, int reason)
{
lockdep_assert_held(&ar->htt.tx_lock);
WARN_ON(reason >= ATH10K_TX_PAUSE_MAX);
ar->tx_paused &= ~BIT(reason);
if (ar->tx_paused)
return;
ieee80211_iterate_active_interfaces_atomic(ar->hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
ath10k_mac_tx_unlock_iter,
ar);
}
void ath10k_mac_vif_tx_lock(struct ath10k_vif *arvif, int reason)
{
struct ath10k *ar = arvif->ar;
lockdep_assert_held(&ar->htt.tx_lock);
WARN_ON(reason >= BITS_PER_LONG);
arvif->tx_paused |= BIT(reason);
ieee80211_stop_queue(ar->hw, arvif->vdev_id);
}
void ath10k_mac_vif_tx_unlock(struct ath10k_vif *arvif, int reason)
{
struct ath10k *ar = arvif->ar;
lockdep_assert_held(&ar->htt.tx_lock);
WARN_ON(reason >= BITS_PER_LONG);
arvif->tx_paused &= ~BIT(reason);
if (ar->tx_paused)
return;
if (arvif->tx_paused)
return;
ieee80211_wake_queue(ar->hw, arvif->vdev_id);
}
static void ath10k_mac_vif_handle_tx_pause(struct ath10k_vif *arvif,
enum wmi_tlv_tx_pause_id pause_id,
enum wmi_tlv_tx_pause_action action)
{
struct ath10k *ar = arvif->ar;
lockdep_assert_held(&ar->htt.tx_lock);
switch (pause_id) {
case WMI_TLV_TX_PAUSE_ID_MCC:
case WMI_TLV_TX_PAUSE_ID_P2P_CLI_NOA:
case WMI_TLV_TX_PAUSE_ID_P2P_GO_PS:
case WMI_TLV_TX_PAUSE_ID_AP_PS:
case WMI_TLV_TX_PAUSE_ID_IBSS_PS:
switch (action) {
case WMI_TLV_TX_PAUSE_ACTION_STOP:
ath10k_mac_vif_tx_lock(arvif, pause_id);
break;
case WMI_TLV_TX_PAUSE_ACTION_WAKE:
ath10k_mac_vif_tx_unlock(arvif, pause_id);
break;
default:
ath10k_warn(ar, "received unknown tx pause action %d on vdev %i, ignoring\n",
action, arvif->vdev_id);
break;
}
break;
case WMI_TLV_TX_PAUSE_ID_AP_PEER_PS:
case WMI_TLV_TX_PAUSE_ID_AP_PEER_UAPSD:
case WMI_TLV_TX_PAUSE_ID_STA_ADD_BA:
case WMI_TLV_TX_PAUSE_ID_HOST:
default:
/* FIXME: Some pause_ids aren't vdev specific. Instead they
* target peer_id and tid. Implementing these could improve
* traffic scheduling fairness across multiple connected
* stations in AP/IBSS modes.
*/
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac ignoring unsupported tx pause vdev %i id %d\n",
arvif->vdev_id, pause_id);
break;
}
}
struct ath10k_mac_tx_pause {
u32 vdev_id;
enum wmi_tlv_tx_pause_id pause_id;
enum wmi_tlv_tx_pause_action action;
};
static void ath10k_mac_handle_tx_pause_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct ath10k_mac_tx_pause *arg = data;
ath10k_mac_vif_handle_tx_pause(arvif, arg->pause_id, arg->action);
}
void ath10k_mac_handle_tx_pause(struct ath10k *ar, u32 vdev_id,
enum wmi_tlv_tx_pause_id pause_id,
enum wmi_tlv_tx_pause_action action)
{
struct ath10k_mac_tx_pause arg = {
.vdev_id = vdev_id,
.pause_id = pause_id,
.action = action,
};
spin_lock_bh(&ar->htt.tx_lock);
ieee80211_iterate_active_interfaces_atomic(ar->hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
ath10k_mac_handle_tx_pause_iter,
&arg);
spin_unlock_bh(&ar->htt.tx_lock);
}
static u8 ath10k_tx_h_get_tid(struct ieee80211_hdr *hdr)
{
if (ieee80211_is_mgmt(hdr->frame_control))
return HTT_DATA_TX_EXT_TID_MGMT;
if (!ieee80211_is_data_qos(hdr->frame_control))
return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
if (!is_unicast_ether_addr(ieee80211_get_DA(hdr)))
return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
return ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
}
static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar, struct ieee80211_vif *vif)
{
if (vif)
return ath10k_vif_to_arvif(vif)->vdev_id;
if (ar->monitor_started)
return ar->monitor_vdev_id;
ath10k_warn(ar, "failed to resolve vdev id\n");
return 0;
}
static enum ath10k_hw_txrx_mode
ath10k_tx_h_get_txmode(struct ath10k *ar, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, struct sk_buff *skb)
{
const struct ieee80211_hdr *hdr = (void *)skb->data;
__le16 fc = hdr->frame_control;
if (!vif || vif->type == NL80211_IFTYPE_MONITOR)
return ATH10K_HW_TXRX_RAW;
if (ieee80211_is_mgmt(fc))
return ATH10K_HW_TXRX_MGMT;
/* Workaround:
*
* NullFunc frames are mostly used to ping if a client or AP are still
* reachable and responsive. This implies tx status reports must be
* accurate - otherwise either mac80211 or userspace (e.g. hostapd) can
* come to a conclusion that the other end disappeared and tear down
* BSS connection or it can never disconnect from BSS/client (which is
* the case).
*
* Firmware with HTT older than 3.0 delivers incorrect tx status for
* NullFunc frames to driver. However there's a HTT Mgmt Tx command
* which seems to deliver correct tx reports for NullFunc frames. The
* downside of using it is it ignores client powersave state so it can
* end up disconnecting sleeping clients in AP mode. It should fix STA
* mode though because AP don't sleep.
*/
if (ar->htt.target_version_major < 3 &&
(ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc)) &&
!test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX, ar->fw_features))
return ATH10K_HW_TXRX_MGMT;
/* Workaround:
*
* Some wmi-tlv firmwares for qca6174 have broken Tx key selection for
* NativeWifi txmode - it selects AP key instead of peer key. It seems
* to work with Ethernet txmode so use it.
*/
if (ieee80211_is_data_present(fc) && sta && sta->tdls)
return ATH10K_HW_TXRX_ETHERNET;
return ATH10K_HW_TXRX_NATIVE_WIFI;
}
/* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
* Control in the header.
*/
static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (void *)skb->data;
struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
u8 *qos_ctl;
if (!ieee80211_is_data_qos(hdr->frame_control))
return;
qos_ctl = ieee80211_get_qos_ctl(hdr);
memmove(skb->data + IEEE80211_QOS_CTL_LEN,
skb->data, (void *)qos_ctl - (void *)skb->data);
skb_pull(skb, IEEE80211_QOS_CTL_LEN);
/* Some firmware revisions don't handle sending QoS NullFunc well.
* These frames are mainly used for CQM purposes so it doesn't really
* matter whether QoS NullFunc or NullFunc are sent.
*/
hdr = (void *)skb->data;
if (ieee80211_is_qos_nullfunc(hdr->frame_control))
cb->htt.tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
}
static void ath10k_tx_h_8023(struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
struct rfc1042_hdr *rfc1042;
struct ethhdr *eth;
size_t hdrlen;
u8 da[ETH_ALEN];
u8 sa[ETH_ALEN];
__be16 type;
hdr = (void *)skb->data;
hdrlen = ieee80211_hdrlen(hdr->frame_control);
rfc1042 = (void *)skb->data + hdrlen;
ether_addr_copy(da, ieee80211_get_DA(hdr));
ether_addr_copy(sa, ieee80211_get_SA(hdr));
type = rfc1042->snap_type;
skb_pull(skb, hdrlen + sizeof(*rfc1042));
skb_push(skb, sizeof(*eth));
eth = (void *)skb->data;
ether_addr_copy(eth->h_dest, da);
ether_addr_copy(eth->h_source, sa);
eth->h_proto = type;
}
static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
struct ieee80211_vif *vif,
struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
/* This is case only for P2P_GO */
if (arvif->vdev_type != WMI_VDEV_TYPE_AP ||
arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO)
return;
if (unlikely(ieee80211_is_probe_resp(hdr->frame_control))) {
spin_lock_bh(&ar->data_lock);
if (arvif->u.ap.noa_data)
if (!pskb_expand_head(skb, 0, arvif->u.ap.noa_len,
GFP_ATOMIC))
memcpy(skb_put(skb, arvif->u.ap.noa_len),
arvif->u.ap.noa_data,
arvif->u.ap.noa_len);
spin_unlock_bh(&ar->data_lock);
}
}
static bool ath10k_mac_need_offchan_tx_work(struct ath10k *ar)
{
/* FIXME: Not really sure since when the behaviour changed. At some
* point new firmware stopped requiring creation of peer entries for
* offchannel tx (and actually creating them causes issues with wmi-htc
* tx credit replenishment and reliability). Assuming it's at least 3.4
* because that's when the `freq` was introduced to TX_FRM HTT command.
*/
return !(ar->htt.target_version_major >= 3 &&
ar->htt.target_version_minor >= 4);
}
static int ath10k_mac_tx_wmi_mgmt(struct ath10k *ar, struct sk_buff *skb)
{
struct sk_buff_head *q = &ar->wmi_mgmt_tx_queue;
int ret = 0;
spin_lock_bh(&ar->data_lock);
if (skb_queue_len(q) == ATH10K_MAX_NUM_MGMT_PENDING) {
ath10k_warn(ar, "wmi mgmt tx queue is full\n");
ret = -ENOSPC;
goto unlock;
}
__skb_queue_tail(q, skb);
ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
unlock:
spin_unlock_bh(&ar->data_lock);
return ret;
}
static void ath10k_mac_tx(struct ath10k *ar, struct sk_buff *skb)
{
struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
struct ath10k_htt *htt = &ar->htt;
int ret = 0;
switch (cb->txmode) {
case ATH10K_HW_TXRX_RAW:
case ATH10K_HW_TXRX_NATIVE_WIFI:
case ATH10K_HW_TXRX_ETHERNET:
ret = ath10k_htt_tx(htt, skb);
break;
case ATH10K_HW_TXRX_MGMT:
if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
ar->fw_features))
ret = ath10k_mac_tx_wmi_mgmt(ar, skb);
else if (ar->htt.target_version_major >= 3)
ret = ath10k_htt_tx(htt, skb);
else
ret = ath10k_htt_mgmt_tx(htt, skb);
break;
}
if (ret) {
ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
ret);
ieee80211_free_txskb(ar->hw, skb);
}
}
void ath10k_offchan_tx_purge(struct ath10k *ar)
{
struct sk_buff *skb;
for (;;) {
skb = skb_dequeue(&ar->offchan_tx_queue);
if (!skb)
break;
ieee80211_free_txskb(ar->hw, skb);
}
}
void ath10k_offchan_tx_work(struct work_struct *work)
{
struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work);
struct ath10k_peer *peer;
struct ieee80211_hdr *hdr;
struct sk_buff *skb;
const u8 *peer_addr;
int vdev_id;
int ret;
unsigned long time_left;
/* FW requirement: We must create a peer before FW will send out
* an offchannel frame. Otherwise the frame will be stuck and
* never transmitted. We delete the peer upon tx completion.
* It is unlikely that a peer for offchannel tx will already be
* present. However it may be in some rare cases so account for that.
* Otherwise we might remove a legitimate peer and break stuff. */
for (;;) {
skb = skb_dequeue(&ar->offchan_tx_queue);
if (!skb)
break;
mutex_lock(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
skb);
hdr = (struct ieee80211_hdr *)skb->data;
peer_addr = ieee80211_get_DA(hdr);
vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
spin_lock_bh(&ar->data_lock);
peer = ath10k_peer_find(ar, vdev_id, peer_addr);
spin_unlock_bh(&ar->data_lock);
if (peer)
/* FIXME: should this use ath10k_warn()? */
ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
peer_addr, vdev_id);
if (!peer) {
ret = ath10k_peer_create(ar, vdev_id, peer_addr,
WMI_PEER_TYPE_DEFAULT);
if (ret)
ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
peer_addr, vdev_id, ret);
}
spin_lock_bh(&ar->data_lock);
reinit_completion(&ar->offchan_tx_completed);
ar->offchan_tx_skb = skb;
spin_unlock_bh(&ar->data_lock);
ath10k_mac_tx(ar, skb);
time_left =
wait_for_completion_timeout(&ar->offchan_tx_completed, 3 * HZ);
if (time_left == 0)
ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
skb);
if (!peer) {
ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
if (ret)
ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
peer_addr, vdev_id, ret);
}
mutex_unlock(&ar->conf_mutex);
}
}
void ath10k_mgmt_over_wmi_tx_purge(struct ath10k *ar)
{
struct sk_buff *skb;
for (;;) {
skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
if (!skb)
break;
ieee80211_free_txskb(ar->hw, skb);
}
}
void ath10k_mgmt_over_wmi_tx_work(struct work_struct *work)
{
struct ath10k *ar = container_of(work, struct ath10k, wmi_mgmt_tx_work);
struct sk_buff *skb;
int ret;
for (;;) {
skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
if (!skb)
break;
ret = ath10k_wmi_mgmt_tx(ar, skb);
if (ret) {
ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
ret);
ieee80211_free_txskb(ar->hw, skb);
}
}
}
/************/
/* Scanning */
/************/
void __ath10k_scan_finish(struct ath10k *ar)
{
lockdep_assert_held(&ar->data_lock);
switch (ar->scan.state) {
case ATH10K_SCAN_IDLE:
break;
case ATH10K_SCAN_RUNNING:
if (ar->scan.is_roc)
ieee80211_remain_on_channel_expired(ar->hw);
/* fall through */
case ATH10K_SCAN_ABORTING:
if (!ar->scan.is_roc)
ieee80211_scan_completed(ar->hw,
(ar->scan.state ==
ATH10K_SCAN_ABORTING));
/* fall through */
case ATH10K_SCAN_STARTING:
ar->scan.state = ATH10K_SCAN_IDLE;
ar->scan_channel = NULL;
ath10k_offchan_tx_purge(ar);
cancel_delayed_work(&ar->scan.timeout);
complete_all(&ar->scan.completed);
break;
}
}
void ath10k_scan_finish(struct ath10k *ar)
{
spin_lock_bh(&ar->data_lock);
__ath10k_scan_finish(ar);
spin_unlock_bh(&ar->data_lock);
}
static int ath10k_scan_stop(struct ath10k *ar)
{
struct wmi_stop_scan_arg arg = {
.req_id = 1, /* FIXME */
.req_type = WMI_SCAN_STOP_ONE,
.u.scan_id = ATH10K_SCAN_ID,
};
int ret;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_wmi_stop_scan(ar, &arg);
if (ret) {
ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
goto out;
}
ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
if (ret == 0) {
ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
ret = -ETIMEDOUT;
} else if (ret > 0) {
ret = 0;
}
out:
/* Scan state should be updated upon scan completion but in case
* firmware fails to deliver the event (for whatever reason) it is
* desired to clean up scan state anyway. Firmware may have just
* dropped the scan completion event delivery due to transport pipe
* being overflown with data and/or it can recover on its own before
* next scan request is submitted.
*/
spin_lock_bh(&ar->data_lock);
if (ar->scan.state != ATH10K_SCAN_IDLE)
__ath10k_scan_finish(ar);
spin_unlock_bh(&ar->data_lock);
return ret;
}
static void ath10k_scan_abort(struct ath10k *ar)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
switch (ar->scan.state) {
case ATH10K_SCAN_IDLE:
/* This can happen if timeout worker kicked in and called
* abortion while scan completion was being processed.
*/
break;
case ATH10K_SCAN_STARTING:
case ATH10K_SCAN_ABORTING:
ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
ath10k_scan_state_str(ar->scan.state),
ar->scan.state);
break;
case ATH10K_SCAN_RUNNING:
ar->scan.state = ATH10K_SCAN_ABORTING;
spin_unlock_bh(&ar->data_lock);
ret = ath10k_scan_stop(ar);
if (ret)
ath10k_warn(ar, "failed to abort scan: %d\n", ret);
spin_lock_bh(&ar->data_lock);
break;
}
spin_unlock_bh(&ar->data_lock);
}
void ath10k_scan_timeout_work(struct work_struct *work)
{
struct ath10k *ar = container_of(work, struct ath10k,
scan.timeout.work);
mutex_lock(&ar->conf_mutex);
ath10k_scan_abort(ar);
mutex_unlock(&ar->conf_mutex);
}
static int ath10k_start_scan(struct ath10k *ar,
const struct wmi_start_scan_arg *arg)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_wmi_start_scan(ar, arg);
if (ret)
return ret;
ret = wait_for_completion_timeout(&ar->scan.started, 1*HZ);
if (ret == 0) {
ret = ath10k_scan_stop(ar);
if (ret)
ath10k_warn(ar, "failed to stop scan: %d\n", ret);
return -ETIMEDOUT;
}
/* If we failed to start the scan, return error code at
* this point. This is probably due to some issue in the
* firmware, but no need to wedge the driver due to that...
*/
spin_lock_bh(&ar->data_lock);
if (ar->scan.state == ATH10K_SCAN_IDLE) {
spin_unlock_bh(&ar->data_lock);
return -EINVAL;
}
spin_unlock_bh(&ar->data_lock);
/* Add a 200ms margin to account for event/command processing */
ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
msecs_to_jiffies(arg->max_scan_time+200));
return 0;
}
/**********************/
/* mac80211 callbacks */
/**********************/
static void ath10k_tx(struct ieee80211_hw *hw,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct ath10k *ar = hw->priv;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_vif *vif = info->control.vif;
struct ieee80211_sta *sta = control->sta;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
__le16 fc = hdr->frame_control;
/* We should disable CCK RATE due to P2P */
if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");
ATH10K_SKB_CB(skb)->htt.is_offchan = false;
ATH10K_SKB_CB(skb)->htt.freq = 0;
ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);
ATH10K_SKB_CB(skb)->txmode = ath10k_tx_h_get_txmode(ar, vif, sta, skb);
ATH10K_SKB_CB(skb)->is_protected = ieee80211_has_protected(fc);
switch (ATH10K_SKB_CB(skb)->txmode) {
case ATH10K_HW_TXRX_MGMT:
case ATH10K_HW_TXRX_NATIVE_WIFI:
ath10k_tx_h_nwifi(hw, skb);
ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
ath10k_tx_h_seq_no(vif, skb);
break;
case ATH10K_HW_TXRX_ETHERNET:
ath10k_tx_h_8023(skb);
break;
case ATH10K_HW_TXRX_RAW:
/* FIXME: Packet injection isn't implemented. It should be
* doable with firmware 10.2 on qca988x.
*/
WARN_ON_ONCE(1);
ieee80211_free_txskb(hw, skb);
return;
}
if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
spin_lock_bh(&ar->data_lock);
ATH10K_SKB_CB(skb)->htt.freq = ar->scan.roc_freq;
ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
spin_unlock_bh(&ar->data_lock);
if (ath10k_mac_need_offchan_tx_work(ar)) {
ATH10K_SKB_CB(skb)->htt.freq = 0;
ATH10K_SKB_CB(skb)->htt.is_offchan = true;
ath10k_dbg(ar, ATH10K_DBG_MAC, "queued offchannel skb %p\n",
skb);
skb_queue_tail(&ar->offchan_tx_queue, skb);
ieee80211_queue_work(hw, &ar->offchan_tx_work);
return;
}
}
ath10k_mac_tx(ar, skb);
}
/* Must not be called with conf_mutex held as workers can use that also. */
void ath10k_drain_tx(struct ath10k *ar)
{
/* make sure rcu-protected mac80211 tx path itself is drained */
synchronize_net();
ath10k_offchan_tx_purge(ar);
ath10k_mgmt_over_wmi_tx_purge(ar);
cancel_work_sync(&ar->offchan_tx_work);
cancel_work_sync(&ar->wmi_mgmt_tx_work);
}
void ath10k_halt(struct ath10k *ar)
{
struct ath10k_vif *arvif;
lockdep_assert_held(&ar->conf_mutex);
clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
ar->filter_flags = 0;
ar->monitor = false;
ar->monitor_arvif = NULL;
if (ar->monitor_started)
ath10k_monitor_stop(ar);
ar->monitor_started = false;
ar->tx_paused = 0;
ath10k_scan_finish(ar);
ath10k_peer_cleanup_all(ar);
ath10k_core_stop(ar);
ath10k_hif_power_down(ar);
spin_lock_bh(&ar->data_lock);
list_for_each_entry(arvif, &ar->arvifs, list)
ath10k_mac_vif_beacon_cleanup(arvif);
spin_unlock_bh(&ar->data_lock);
}
static int ath10k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
{
struct ath10k *ar = hw->priv;
mutex_lock(&ar->conf_mutex);
if (ar->cfg_tx_chainmask) {
*tx_ant = ar->cfg_tx_chainmask;
*rx_ant = ar->cfg_rx_chainmask;
} else {
*tx_ant = ar->supp_tx_chainmask;
*rx_ant = ar->supp_rx_chainmask;
}
mutex_unlock(&ar->conf_mutex);
return 0;
}
static void ath10k_check_chain_mask(struct ath10k *ar, u32 cm, const char *dbg)
{
/* It is not clear that allowing gaps in chainmask
* is helpful. Probably it will not do what user
* is hoping for, so warn in that case.
*/
if (cm == 15 || cm == 7 || cm == 3 || cm == 1 || cm == 0)
return;
ath10k_warn(ar, "mac %s antenna chainmask may be invalid: 0x%x. Suggested values: 15, 7, 3, 1 or 0.\n",
dbg, cm);
}
static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
ath10k_check_chain_mask(ar, tx_ant, "tx");
ath10k_check_chain_mask(ar, rx_ant, "rx");
ar->cfg_tx_chainmask = tx_ant;
ar->cfg_rx_chainmask = rx_ant;
if ((ar->state != ATH10K_STATE_ON) &&
(ar->state != ATH10K_STATE_RESTARTED))
return 0;
ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->tx_chain_mask,
tx_ant);
if (ret) {
ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
ret, tx_ant);
return ret;
}
ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
rx_ant);
if (ret) {
ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
ret, rx_ant);
return ret;
}
return 0;
}
static int ath10k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
{
struct ath10k *ar = hw->priv;
int ret;
mutex_lock(&ar->conf_mutex);
ret = __ath10k_set_antenna(ar, tx_ant, rx_ant);
mutex_unlock(&ar->conf_mutex);
return ret;
}
static int ath10k_start(struct ieee80211_hw *hw)
{
struct ath10k *ar = hw->priv;
u32 burst_enable;
int ret = 0;
/*
* This makes sense only when restarting hw. It is harmless to call
* uncoditionally. This is necessary to make sure no HTT/WMI tx
* commands will be submitted while restarting.
*/
ath10k_drain_tx(ar);
mutex_lock(&ar->conf_mutex);
switch (ar->state) {
case ATH10K_STATE_OFF:
ar->state = ATH10K_STATE_ON;
break;
case ATH10K_STATE_RESTARTING:
ath10k_halt(ar);
ar->state = ATH10K_STATE_RESTARTED;
break;
case ATH10K_STATE_ON:
case ATH10K_STATE_RESTARTED:
case ATH10K_STATE_WEDGED:
WARN_ON(1);
ret = -EINVAL;
goto err;
case ATH10K_STATE_UTF:
ret = -EBUSY;
goto err;
}
ret = ath10k_hif_power_up(ar);
if (ret) {
ath10k_err(ar, "Could not init hif: %d\n", ret);
goto err_off;
}
ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
if (ret) {
ath10k_err(ar, "Could not init core: %d\n", ret);
goto err_power_down;
}
ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
if (ret) {
ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
goto err_core_stop;
}
ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
if (ret) {
ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
goto err_core_stop;
}
if (test_bit(WMI_SERVICE_ADAPTIVE_OCS, ar->wmi.svc_map)) {
ret = ath10k_wmi_adaptive_qcs(ar, true);
if (ret) {
ath10k_warn(ar, "failed to enable adaptive qcs: %d\n",
ret);
goto err_core_stop;
}
}
if (test_bit(WMI_SERVICE_BURST, ar->wmi.svc_map)) {
burst_enable = ar->wmi.pdev_param->burst_enable;
ret = ath10k_wmi_pdev_set_param(ar, burst_enable, 0);
if (ret) {
ath10k_warn(ar, "failed to disable burst: %d\n", ret);
goto err_core_stop;
}
}
if (ar->cfg_tx_chainmask)
__ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
ar->cfg_rx_chainmask);
/*
* By default FW set ARP frames ac to voice (6). In that case ARP
* exchange is not working properly for UAPSD enabled AP. ARP requests
* which arrives with access category 0 are processed by network stack
* and send back with access category 0, but FW changes access category
* to 6. Set ARP frames access category to best effort (0) solves
* this problem.
*/
ret = ath10k_wmi_pdev_set_param(ar,
ar->wmi.pdev_param->arp_ac_override, 0);
if (ret) {
ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
ret);
goto err_core_stop;
}
ret = ath10k_wmi_pdev_set_param(ar,
ar->wmi.pdev_param->ani_enable, 1);
if (ret) {
ath10k_warn(ar, "failed to enable ani by default: %d\n",
ret);
goto err_core_stop;
}
ar->ani_enabled = true;
ar->num_started_vdevs = 0;
ath10k_regd_update(ar);
ath10k_spectral_start(ar);
ath10k_thermal_set_throttling(ar);
mutex_unlock(&ar->conf_mutex);
return 0;
err_core_stop:
ath10k_core_stop(ar);
err_power_down:
ath10k_hif_power_down(ar);
err_off:
ar->state = ATH10K_STATE_OFF;
err:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static void ath10k_stop(struct ieee80211_hw *hw)
{
struct ath10k *ar = hw->priv;
ath10k_drain_tx(ar);
mutex_lock(&ar->conf_mutex);
if (ar->state != ATH10K_STATE_OFF) {
ath10k_halt(ar);
ar->state = ATH10K_STATE_OFF;
}
mutex_unlock(&ar->conf_mutex);
cancel_delayed_work_sync(&ar->scan.timeout);
cancel_work_sync(&ar->restart_work);
}
static int ath10k_config_ps(struct ath10k *ar)
{
struct ath10k_vif *arvif;
int ret = 0;
lockdep_assert_held(&ar->conf_mutex);
list_for_each_entry(arvif, &ar->arvifs, list) {
ret = ath10k_mac_vif_setup_ps(arvif);
if (ret) {
ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
break;
}
}
return ret;
}
static void ath10k_mac_chan_reconfigure(struct ath10k *ar)
{
struct ath10k_vif *arvif;
struct cfg80211_chan_def def;
int ret;
lockdep_assert_held(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac chan reconfigure\n");
/* First stop monitor interface. Some FW versions crash if there's a
* lone monitor interface. */
if (ar->monitor_started)
ath10k_monitor_stop(ar);
list_for_each_entry(arvif, &ar->arvifs, list) {
if (!arvif->is_started)
continue;
if (!arvif->is_up)
continue;
if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
continue;
ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
if (ret) {
ath10k_warn(ar, "failed to down vdev %d: %d\n",
arvif->vdev_id, ret);
continue;
}
}
/* all vdevs are downed now - attempt to restart and re-up them */
list_for_each_entry(arvif, &ar->arvifs, list) {
if (!arvif->is_started)
continue;
if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
continue;
ret = ath10k_mac_setup_bcn_tmpl(arvif);
if (ret)
ath10k_warn(ar, "failed to update bcn tmpl during csa: %d\n",
ret);
ret = ath10k_mac_setup_prb_tmpl(arvif);
if (ret)
ath10k_warn(ar, "failed to update prb tmpl during csa: %d\n",
ret);
if (WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def)))
continue;
ret = ath10k_vdev_restart(arvif, &def);
if (ret) {
ath10k_warn(ar, "failed to restart vdev %d: %d\n",
arvif->vdev_id, ret);
continue;
}
if (!arvif->is_up)
continue;
ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
arvif->bssid);
if (ret) {
ath10k_warn(ar, "failed to bring vdev up %d: %d\n",
arvif->vdev_id, ret);
continue;
}
}
ath10k_monitor_recalc(ar);
}
static int ath10k_mac_txpower_setup(struct ath10k *ar, int txpower)
{
int ret;
u32 param;
lockdep_assert_held(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac txpower %d\n", txpower);
param = ar->wmi.pdev_param->txpower_limit2g;
ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2);
if (ret) {
ath10k_warn(ar, "failed to set 2g txpower %d: %d\n",
txpower, ret);
return ret;
}
param = ar->wmi.pdev_param->txpower_limit5g;
ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2);
if (ret) {
ath10k_warn(ar, "failed to set 5g txpower %d: %d\n",
txpower, ret);
return ret;
}
return 0;
}
static int ath10k_mac_txpower_recalc(struct ath10k *ar)
{
struct ath10k_vif *arvif;
int ret, txpower = -1;
lockdep_assert_held(&ar->conf_mutex);
list_for_each_entry(arvif, &ar->arvifs, list) {
WARN_ON(arvif->txpower < 0);
if (txpower == -1)
txpower = arvif->txpower;
else
txpower = min(txpower, arvif->txpower);
}
if (WARN_ON(txpower == -1))
return -EINVAL;
ret = ath10k_mac_txpower_setup(ar, txpower);
if (ret) {
ath10k_warn(ar, "failed to setup tx power %d: %d\n",
txpower, ret);
return ret;
}
return 0;
}
static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
{
struct ath10k *ar = hw->priv;
struct ieee80211_conf *conf = &hw->conf;
int ret = 0;
mutex_lock(&ar->conf_mutex);
if (changed & IEEE80211_CONF_CHANGE_PS)
ath10k_config_ps(ar);
if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
ret = ath10k_monitor_recalc(ar);
if (ret)
ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
}
mutex_unlock(&ar->conf_mutex);
return ret;
}
static u32 get_nss_from_chainmask(u16 chain_mask)
{
if ((chain_mask & 0x15) == 0x15)
return 4;
else if ((chain_mask & 0x7) == 0x7)
return 3;
else if ((chain_mask & 0x3) == 0x3)
return 2;
return 1;
}
/*
* TODO:
* Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE,
* because we will send mgmt frames without CCK. This requirement
* for P2P_FIND/GO_NEG should be handled by checking CCK flag
* in the TX packet.
*/
static int ath10k_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
enum wmi_sta_powersave_param param;
int ret = 0;
u32 value;
int bit;
int i;
u32 vdev_param;
vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
mutex_lock(&ar->conf_mutex);
memset(arvif, 0, sizeof(*arvif));
arvif->ar = ar;
arvif->vif = vif;
INIT_LIST_HEAD(&arvif->list);
INIT_WORK(&arvif->ap_csa_work, ath10k_mac_vif_ap_csa_work);
INIT_DELAYED_WORK(&arvif->connection_loss_work,
ath10k_mac_vif_sta_connection_loss_work);
for (i = 0; i < ARRAY_SIZE(arvif->bitrate_mask.control); i++) {
arvif->bitrate_mask.control[i].legacy = 0xffffffff;
memset(arvif->bitrate_mask.control[i].ht_mcs, 0xff,
sizeof(arvif->bitrate_mask.control[i].ht_mcs));
memset(arvif->bitrate_mask.control[i].vht_mcs, 0xff,
sizeof(arvif->bitrate_mask.control[i].vht_mcs));
}
if (ar->free_vdev_map == 0) {
ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
ret = -EBUSY;
goto err;
}
bit = __ffs64(ar->free_vdev_map);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
bit, ar->free_vdev_map);
arvif->vdev_id = bit;
arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;
switch (vif->type) {
case NL80211_IFTYPE_P2P_DEVICE:
arvif->vdev_type = WMI_VDEV_TYPE_STA;
arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;
break;
case NL80211_IFTYPE_UNSPECIFIED:
case NL80211_IFTYPE_STATION:
arvif->vdev_type = WMI_VDEV_TYPE_STA;
if (vif->p2p)
arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT;
break;
case NL80211_IFTYPE_ADHOC:
arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
break;
case NL80211_IFTYPE_AP:
arvif->vdev_type = WMI_VDEV_TYPE_AP;
if (vif->p2p)
arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_GO;
break;
case NL80211_IFTYPE_MONITOR:
arvif->vdev_type = WMI_VDEV_TYPE_MONITOR;
break;
default:
WARN_ON(1);
break;
}
/* Using vdev_id as queue number will make it very easy to do per-vif
* tx queue locking. This shouldn't wrap due to interface combinations
* but do a modulo for correctness sake and prevent using offchannel tx
* queues for regular vif tx.
*/
vif->cab_queue = arvif->vdev_id % (IEEE80211_MAX_QUEUES - 1);
for (i = 0; i < ARRAY_SIZE(vif->hw_queue); i++)
vif->hw_queue[i] = arvif->vdev_id % (IEEE80211_MAX_QUEUES - 1);
/* Some firmware revisions don't wait for beacon tx completion before
* sending another SWBA event. This could lead to hardware using old
* (freed) beacon data in some cases, e.g. tx credit starvation
* combined with missed TBTT. This is very very rare.
*
* On non-IOMMU-enabled hosts this could be a possible security issue
* because hw could beacon some random data on the air. On
* IOMMU-enabled hosts DMAR faults would occur in most cases and target
* device would crash.
*
* Since there are no beacon tx completions (implicit nor explicit)
* propagated to host the only workaround for this is to allocate a
* DMA-coherent buffer for a lifetime of a vif and use it for all
* beacon tx commands. Worst case for this approach is some beacons may
* become corrupted, e.g. have garbled IEs or out-of-date TIM bitmap.
*/
if (vif->type == NL80211_IFTYPE_ADHOC ||
vif->type == NL80211_IFTYPE_AP) {
arvif->beacon_buf = dma_zalloc_coherent(ar->dev,
IEEE80211_MAX_FRAME_LEN,
&arvif->beacon_paddr,
GFP_ATOMIC);
if (!arvif->beacon_buf) {
ret = -ENOMEM;
ath10k_warn(ar, "failed to allocate beacon buffer: %d\n",
ret);
goto err;
}
}
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d bcnmode %s\n",
arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype,
arvif->beacon_buf ? "single-buf" : "per-skb");
ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
arvif->vdev_subtype, vif->addr);
if (ret) {
ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
arvif->vdev_id, ret);
goto err;
}
ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
list_add(&arvif->list, &ar->arvifs);
/* It makes no sense to have firmware do keepalives. mac80211 already
* takes care of this with idle connection polling.
*/
ret = ath10k_mac_vif_disable_keepalive(arvif);
if (ret) {
ath10k_warn(ar, "failed to disable keepalive on vdev %i: %d\n",
arvif->vdev_id, ret);
goto err_vdev_delete;
}
arvif->def_wep_key_idx = -1;
vdev_param = ar->wmi.vdev_param->tx_encap_type;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
ATH10K_HW_TXRX_NATIVE_WIFI);
/* 10.X firmware does not support this VDEV parameter. Do not warn */
if (ret && ret != -EOPNOTSUPP) {
ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
arvif->vdev_id, ret);
goto err_vdev_delete;
}
if (ar->cfg_tx_chainmask) {
u16 nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);
vdev_param = ar->wmi.vdev_param->nss;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
nss);
if (ret) {
ath10k_warn(ar, "failed to set vdev %i chainmask 0x%x, nss %i: %d\n",
arvif->vdev_id, ar->cfg_tx_chainmask, nss,
ret);
goto err_vdev_delete;
}
}
if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr,
WMI_PEER_TYPE_DEFAULT);
if (ret) {
ath10k_warn(ar, "failed to create vdev %i peer for AP/IBSS: %d\n",
arvif->vdev_id, ret);
goto err_vdev_delete;
}
}
if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
ret = ath10k_mac_set_kickout(arvif);
if (ret) {
ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
arvif->vdev_id, ret);
goto err_peer_delete;
}
}
if (arvif->vdev_type == WMI_VDEV_TYPE_STA) {
param = WMI_STA_PS_PARAM_RX_WAKE_POLICY;
value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;
ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
param, value);
if (ret) {
ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
arvif->vdev_id, ret);
goto err_peer_delete;
}
ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
if (ret) {
ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
arvif->vdev_id, ret);
goto err_peer_delete;
}
ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
if (ret) {
ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
arvif->vdev_id, ret);
goto err_peer_delete;
}
}
ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
if (ret) {
ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
arvif->vdev_id, ret);
goto err_peer_delete;
}
ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
if (ret) {
ath10k_warn(ar, "failed to set frag threshold for vdev %d: %d\n",
arvif->vdev_id, ret);
goto err_peer_delete;
}
arvif->txpower = vif->bss_conf.txpower;
ret = ath10k_mac_txpower_recalc(ar);
if (ret) {
ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
goto err_peer_delete;
}
if (vif->type == NL80211_IFTYPE_MONITOR) {
ar->monitor_arvif = arvif;
ret = ath10k_monitor_recalc(ar);
if (ret) {
ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
goto err_peer_delete;
}
}
mutex_unlock(&ar->conf_mutex);
return 0;
err_peer_delete:
if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
arvif->vdev_type == WMI_VDEV_TYPE_IBSS)
ath10k_wmi_peer_delete(ar, arvif->vdev_id, vif->addr);
err_vdev_delete:
ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
ar->free_vdev_map |= 1LL << arvif->vdev_id;
list_del(&arvif->list);
err:
if (arvif->beacon_buf) {
dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
arvif->beacon_buf, arvif->beacon_paddr);
arvif->beacon_buf = NULL;
}
mutex_unlock(&ar->conf_mutex);
return ret;
}
static void ath10k_mac_vif_tx_unlock_all(struct ath10k_vif *arvif)
{
int i;
for (i = 0; i < BITS_PER_LONG; i++)
ath10k_mac_vif_tx_unlock(arvif, i);
}
static void ath10k_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
int ret;
cancel_work_sync(&arvif->ap_csa_work);
cancel_delayed_work_sync(&arvif->connection_loss_work);
mutex_lock(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
ath10k_mac_vif_beacon_cleanup(arvif);
spin_unlock_bh(&ar->data_lock);
ret = ath10k_spectral_vif_stop(arvif);
if (ret)
ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
arvif->vdev_id, ret);
ar->free_vdev_map |= 1LL << arvif->vdev_id;
list_del(&arvif->list);
if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
ret = ath10k_wmi_peer_delete(arvif->ar, arvif->vdev_id,
vif->addr);
if (ret)
ath10k_warn(ar, "failed to submit AP/IBSS self-peer removal on vdev %i: %d\n",
arvif->vdev_id, ret);
kfree(arvif->u.ap.noa_data);
}
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
arvif->vdev_id);
ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
if (ret)
ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
arvif->vdev_id, ret);
/* Some firmware revisions don't notify host about self-peer removal
* until after associated vdev is deleted.
*/
if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
ret = ath10k_wait_for_peer_deleted(ar, arvif->vdev_id,
vif->addr);
if (ret)
ath10k_warn(ar, "failed to remove AP self-peer on vdev %i: %d\n",
arvif->vdev_id, ret);
spin_lock_bh(&ar->data_lock);
ar->num_peers--;
spin_unlock_bh(&ar->data_lock);
}
ath10k_peer_cleanup(ar, arvif->vdev_id);
if (vif->type == NL80211_IFTYPE_MONITOR) {
ar->monitor_arvif = NULL;
ret = ath10k_monitor_recalc(ar);
if (ret)
ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
}
spin_lock_bh(&ar->htt.tx_lock);
ath10k_mac_vif_tx_unlock_all(arvif);
spin_unlock_bh(&ar->htt.tx_lock);
mutex_unlock(&ar->conf_mutex);
}
/*
* FIXME: Has to be verified.
*/
#define SUPPORTED_FILTERS \
(FIF_ALLMULTI | \
FIF_CONTROL | \
FIF_PSPOLL | \
FIF_OTHER_BSS | \
FIF_BCN_PRBRESP_PROMISC | \
FIF_PROBE_REQ | \
FIF_FCSFAIL)
static void ath10k_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
u64 multicast)
{
struct ath10k *ar = hw->priv;
int ret;
mutex_lock(&ar->conf_mutex);
changed_flags &= SUPPORTED_FILTERS;
*total_flags &= SUPPORTED_FILTERS;
ar->filter_flags = *total_flags;
ret = ath10k_monitor_recalc(ar);
if (ret)
ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
mutex_unlock(&ar->conf_mutex);
}
static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info,
u32 changed)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
int ret = 0;
u32 vdev_param, pdev_param, slottime, preamble;
mutex_lock(&ar->conf_mutex);
if (changed & BSS_CHANGED_IBSS)
ath10k_control_ibss(arvif, info, vif->addr);
if (changed & BSS_CHANGED_BEACON_INT) {
arvif->beacon_interval = info->beacon_int;
vdev_param = ar->wmi.vdev_param->beacon_interval;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
arvif->beacon_interval);
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac vdev %d beacon_interval %d\n",
arvif->vdev_id, arvif->beacon_interval);
if (ret)
ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
arvif->vdev_id, ret);
}
if (changed & BSS_CHANGED_BEACON) {
ath10k_dbg(ar, ATH10K_DBG_MAC,
"vdev %d set beacon tx mode to staggered\n",
arvif->vdev_id);
pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
WMI_BEACON_STAGGERED_MODE);
if (ret)
ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
arvif->vdev_id, ret);
ret = ath10k_mac_setup_bcn_tmpl(arvif);
if (ret)
ath10k_warn(ar, "failed to update beacon template: %d\n",
ret);
}
if (changed & BSS_CHANGED_AP_PROBE_RESP) {
ret = ath10k_mac_setup_prb_tmpl(arvif);
if (ret)
ath10k_warn(ar, "failed to setup probe resp template on vdev %i: %d\n",
arvif->vdev_id, ret);
}
if (changed & (BSS_CHANGED_BEACON_INFO | BSS_CHANGED_BEACON)) {
arvif->dtim_period = info->dtim_period;
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac vdev %d dtim_period %d\n",
arvif->vdev_id, arvif->dtim_period);
vdev_param = ar->wmi.vdev_param->dtim_period;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
arvif->dtim_period);
if (ret)
ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
arvif->vdev_id, ret);
}
if (changed & BSS_CHANGED_SSID &&
vif->type == NL80211_IFTYPE_AP) {
arvif->u.ap.ssid_len = info->ssid_len;
if (info->ssid_len)
memcpy(arvif->u.ap.ssid, info->ssid, info->ssid_len);
arvif->u.ap.hidden_ssid = info->hidden_ssid;
}
if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
ether_addr_copy(arvif->bssid, info->bssid);
if (changed & BSS_CHANGED_BEACON_ENABLED)
ath10k_control_beaconing(arvif, info);
if (changed & BSS_CHANGED_ERP_CTS_PROT) {
arvif->use_cts_prot = info->use_cts_prot;
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
arvif->vdev_id, info->use_cts_prot);
ret = ath10k_recalc_rtscts_prot(arvif);
if (ret)
ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
arvif->vdev_id, ret);
vdev_param = ar->wmi.vdev_param->protection_mode;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
info->use_cts_prot ? 1 : 0);
if (ret)
ath10k_warn(ar, "failed to set protection mode %d on vdev %i: %d\n",
info->use_cts_prot, arvif->vdev_id, ret);
}
if (changed & BSS_CHANGED_ERP_SLOT) {
if (info->use_short_slot)
slottime = WMI_VDEV_SLOT_TIME_SHORT; /* 9us */
else
slottime = WMI_VDEV_SLOT_TIME_LONG; /* 20us */
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
arvif->vdev_id, slottime);
vdev_param = ar->wmi.vdev_param->slot_time;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
slottime);
if (ret)
ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
arvif->vdev_id, ret);
}
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
if (info->use_short_preamble)
preamble = WMI_VDEV_PREAMBLE_SHORT;
else
preamble = WMI_VDEV_PREAMBLE_LONG;
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac vdev %d preamble %dn",
arvif->vdev_id, preamble);
vdev_param = ar->wmi.vdev_param->preamble;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
preamble);
if (ret)
ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
arvif->vdev_id, ret);
}
if (changed & BSS_CHANGED_ASSOC) {
if (info->assoc) {
/* Workaround: Make sure monitor vdev is not running
* when associating to prevent some firmware revisions
* (e.g. 10.1 and 10.2) from crashing.
*/
if (ar->monitor_started)
ath10k_monitor_stop(ar);
ath10k_bss_assoc(hw, vif, info);
ath10k_monitor_recalc(ar);
} else {
ath10k_bss_disassoc(hw, vif);
}
}
if (changed & BSS_CHANGED_TXPOWER) {
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev_id %i txpower %d\n",
arvif->vdev_id, info->txpower);
arvif->txpower = info->txpower;
ret = ath10k_mac_txpower_recalc(ar);
if (ret)
ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
}
if (changed & BSS_CHANGED_PS) {
arvif->ps = vif->bss_conf.ps;
ret = ath10k_config_ps(ar);
if (ret)
ath10k_warn(ar, "failed to setup ps on vdev %i: %d\n",
arvif->vdev_id, ret);
}
mutex_unlock(&ar->conf_mutex);
}
static int ath10k_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_scan_request *hw_req)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct cfg80211_scan_request *req = &hw_req->req;
struct wmi_start_scan_arg arg;
int ret = 0;
int i;
mutex_lock(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
switch (ar->scan.state) {
case ATH10K_SCAN_IDLE:
reinit_completion(&ar->scan.started);
reinit_completion(&ar->scan.completed);
ar->scan.state = ATH10K_SCAN_STARTING;
ar->scan.is_roc = false;
ar->scan.vdev_id = arvif->vdev_id;
ret = 0;
break;
case ATH10K_SCAN_STARTING:
case ATH10K_SCAN_RUNNING:
case ATH10K_SCAN_ABORTING:
ret = -EBUSY;
break;
}
spin_unlock_bh(&ar->data_lock);
if (ret)
goto exit;
memset(&arg, 0, sizeof(arg));
ath10k_wmi_start_scan_init(ar, &arg);
arg.vdev_id = arvif->vdev_id;
arg.scan_id = ATH10K_SCAN_ID;
if (!req->no_cck)
arg.scan_ctrl_flags |= WMI_SCAN_ADD_CCK_RATES;
if (req->ie_len) {
arg.ie_len = req->ie_len;
memcpy(arg.ie, req->ie, arg.ie_len);
}
if (req->n_ssids) {
arg.n_ssids = req->n_ssids;
for (i = 0; i < arg.n_ssids; i++) {
arg.ssids[i].len = req->ssids[i].ssid_len;
arg.ssids[i].ssid = req->ssids[i].ssid;
}
} else {
arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
}
if (req->n_channels) {
arg.n_channels = req->n_channels;
for (i = 0; i < arg.n_channels; i++)
arg.channels[i] = req->channels[i]->center_freq;
}
ret = ath10k_start_scan(ar, &arg);
if (ret) {
ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
spin_lock_bh(&ar->data_lock);
ar->scan.state = ATH10K_SCAN_IDLE;
spin_unlock_bh(&ar->data_lock);
}
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static void ath10k_cancel_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath10k *ar = hw->priv;
mutex_lock(&ar->conf_mutex);
ath10k_scan_abort(ar);
mutex_unlock(&ar->conf_mutex);
cancel_delayed_work_sync(&ar->scan.timeout);
}
static void ath10k_set_key_h_def_keyidx(struct ath10k *ar,
struct ath10k_vif *arvif,
enum set_key_cmd cmd,
struct ieee80211_key_conf *key)
{
u32 vdev_param = arvif->ar->wmi.vdev_param->def_keyid;
int ret;
/* 10.1 firmware branch requires default key index to be set to group
* key index after installing it. Otherwise FW/HW Txes corrupted
* frames with multi-vif APs. This is not required for main firmware
* branch (e.g. 636).
*
* This is also needed for 636 fw for IBSS-RSN to work more reliably.
*
* FIXME: It remains unknown if this is required for multi-vif STA
* interfaces on 10.1.
*/
if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
return;
if (key->cipher == WLAN_CIPHER_SUITE_WEP40)
return;
if (key->cipher == WLAN_CIPHER_SUITE_WEP104)
return;
if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
return;
if (cmd != SET_KEY)
return;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
key->keyidx);
if (ret)
ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
arvif->vdev_id, ret);
}
static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
struct ieee80211_vif *vif, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct ath10k_peer *peer;
const u8 *peer_addr;
bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
key->cipher == WLAN_CIPHER_SUITE_WEP104;
int ret = 0;
int ret2;
u32 flags = 0;
u32 flags2;
/* this one needs to be done in software */
if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
return 1;
if (key->keyidx > WMI_MAX_KEY_INDEX)
return -ENOSPC;
mutex_lock(&ar->conf_mutex);
if (sta)
peer_addr = sta->addr;
else if (arvif->vdev_type == WMI_VDEV_TYPE_STA)
peer_addr = vif->bss_conf.bssid;
else
peer_addr = vif->addr;
key->hw_key_idx = key->keyidx;
if (is_wep) {
if (cmd == SET_KEY)
arvif->wep_keys[key->keyidx] = key;
else
arvif->wep_keys[key->keyidx] = NULL;
}
/* the peer should not disappear in mid-way (unless FW goes awry) since
* we already hold conf_mutex. we just make sure its there now. */
spin_lock_bh(&ar->data_lock);
peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
spin_unlock_bh(&ar->data_lock);
if (!peer) {
if (cmd == SET_KEY) {
ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
peer_addr);
ret = -EOPNOTSUPP;
goto exit;
} else {
/* if the peer doesn't exist there is no key to disable
* anymore */
goto exit;
}
}
if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
flags |= WMI_KEY_PAIRWISE;
else
flags |= WMI_KEY_GROUP;
if (is_wep) {
if (cmd == DISABLE_KEY)
ath10k_clear_vdev_key(arvif, key);
/* When WEP keys are uploaded it's possible that there are
* stations associated already (e.g. when merging) without any
* keys. Static WEP needs an explicit per-peer key upload.
*/
if (vif->type == NL80211_IFTYPE_ADHOC &&
cmd == SET_KEY)
ath10k_mac_vif_update_wep_key(arvif, key);
/* 802.1x never sets the def_wep_key_idx so each set_key()
* call changes default tx key.
*
* Static WEP sets def_wep_key_idx via .set_default_unicast_key
* after first set_key().
*/
if (cmd == SET_KEY && arvif->def_wep_key_idx == -1)
flags |= WMI_KEY_TX_USAGE;
}
ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags);
if (ret) {
ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
arvif->vdev_id, peer_addr, ret);
goto exit;
}
/* mac80211 sets static WEP keys as groupwise while firmware requires
* them to be installed twice as both pairwise and groupwise.
*/
if (is_wep && !sta && vif->type == NL80211_IFTYPE_STATION) {
flags2 = flags;
flags2 &= ~WMI_KEY_GROUP;
flags2 |= WMI_KEY_PAIRWISE;
ret = ath10k_install_key(arvif, key, cmd, peer_addr, flags2);
if (ret) {
ath10k_warn(ar, "failed to install (ucast) key for vdev %i peer %pM: %d\n",
arvif->vdev_id, peer_addr, ret);
ret2 = ath10k_install_key(arvif, key, DISABLE_KEY,
peer_addr, flags);
if (ret2)
ath10k_warn(ar, "failed to disable (mcast) key for vdev %i peer %pM: %d\n",
arvif->vdev_id, peer_addr, ret2);
goto exit;
}
}
ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);
spin_lock_bh(&ar->data_lock);
peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
if (peer && cmd == SET_KEY)
peer->keys[key->keyidx] = key;
else if (peer && cmd == DISABLE_KEY)
peer->keys[key->keyidx] = NULL;
else if (peer == NULL)
/* impossible unless FW goes crazy */
ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
spin_unlock_bh(&ar->data_lock);
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static void ath10k_set_default_unicast_key(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
int keyidx)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
int ret;
mutex_lock(&arvif->ar->conf_mutex);
if (arvif->ar->state != ATH10K_STATE_ON)
goto unlock;
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d set keyidx %d\n",
arvif->vdev_id, keyidx);
ret = ath10k_wmi_vdev_set_param(arvif->ar,
arvif->vdev_id,
arvif->ar->wmi.vdev_param->def_keyid,
keyidx);
if (ret) {
ath10k_warn(ar, "failed to update wep key index for vdev %d: %d\n",
arvif->vdev_id,
ret);
goto unlock;
}
arvif->def_wep_key_idx = keyidx;
unlock:
mutex_unlock(&arvif->ar->conf_mutex);
}
static void ath10k_sta_rc_update_wk(struct work_struct *wk)
{
struct ath10k *ar;
struct ath10k_vif *arvif;
struct ath10k_sta *arsta;
struct ieee80211_sta *sta;
struct cfg80211_chan_def def;
enum ieee80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
u32 changed, bw, nss, smps;
int err;
arsta = container_of(wk, struct ath10k_sta, update_wk);
sta = container_of((void *)arsta, struct ieee80211_sta, drv_priv);
arvif = arsta->arvif;
ar = arvif->ar;
if (WARN_ON(ath10k_mac_vif_chan(arvif->vif, &def)))
return;
band = def.chan->band;
ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
spin_lock_bh(&ar->data_lock);
changed = arsta->changed;
arsta->changed = 0;
bw = arsta->bw;
nss = arsta->nss;
smps = arsta->smps;
spin_unlock_bh(&ar->data_lock);
mutex_lock(&ar->conf_mutex);
nss = max_t(u32, 1, nss);
nss = min(nss, max(ath10k_mac_max_ht_nss(ht_mcs_mask),
ath10k_mac_max_vht_nss(vht_mcs_mask)));
if (changed & IEEE80211_RC_BW_CHANGED) {
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
sta->addr, bw);
err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
WMI_PEER_CHAN_WIDTH, bw);
if (err)
ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
sta->addr, bw, err);
}
if (changed & IEEE80211_RC_NSS_CHANGED) {
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
sta->addr, nss);
err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
WMI_PEER_NSS, nss);
if (err)
ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
sta->addr, nss, err);
}
if (changed & IEEE80211_RC_SMPS_CHANGED) {
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
sta->addr, smps);
err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
WMI_PEER_SMPS_STATE, smps);
if (err)
ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
sta->addr, smps, err);
}
if (changed & IEEE80211_RC_SUPP_RATES_CHANGED ||
changed & IEEE80211_RC_NSS_CHANGED) {
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates/nss\n",
sta->addr);
err = ath10k_station_assoc(ar, arvif->vif, sta, true);
if (err)
ath10k_warn(ar, "failed to reassociate station: %pM\n",
sta->addr);
}
mutex_unlock(&ar->conf_mutex);
}
static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif,
struct ieee80211_sta *sta)
{
struct ath10k *ar = arvif->ar;
lockdep_assert_held(&ar->conf_mutex);
if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
return 0;
if (ar->num_stations >= ar->max_num_stations)
return -ENOBUFS;
ar->num_stations++;
return 0;
}
static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif,
struct ieee80211_sta *sta)
{
struct ath10k *ar = arvif->ar;
lockdep_assert_held(&ar->conf_mutex);
if (arvif->vdev_type == WMI_VDEV_TYPE_STA && !sta->tdls)
return;
ar->num_stations--;
}
struct ath10k_mac_tdls_iter_data {
u32 num_tdls_stations;
struct ieee80211_vif *curr_vif;
};
static void ath10k_mac_tdls_vif_stations_count_iter(void *data,
struct ieee80211_sta *sta)
{
struct ath10k_mac_tdls_iter_data *iter_data = data;
struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
struct ieee80211_vif *sta_vif = arsta->arvif->vif;
if (sta->tdls && sta_vif == iter_data->curr_vif)
iter_data->num_tdls_stations++;
}
static int ath10k_mac_tdls_vif_stations_count(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath10k_mac_tdls_iter_data data = {};
data.curr_vif = vif;
ieee80211_iterate_stations_atomic(hw,
ath10k_mac_tdls_vif_stations_count_iter,
&data);
return data.num_tdls_stations;
}
static void ath10k_mac_tdls_vifs_count_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
int *num_tdls_vifs = data;
if (vif->type != NL80211_IFTYPE_STATION)
return;
if (ath10k_mac_tdls_vif_stations_count(arvif->ar->hw, vif) > 0)
(*num_tdls_vifs)++;
}
static int ath10k_mac_tdls_vifs_count(struct ieee80211_hw *hw)
{
int num_tdls_vifs = 0;
ieee80211_iterate_active_interfaces_atomic(hw,
IEEE80211_IFACE_ITER_NORMAL,
ath10k_mac_tdls_vifs_count_iter,
&num_tdls_vifs);
return num_tdls_vifs;
}
static int ath10k_sta_state(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
enum ieee80211_sta_state old_state,
enum ieee80211_sta_state new_state)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
int ret = 0;
if (old_state == IEEE80211_STA_NOTEXIST &&
new_state == IEEE80211_STA_NONE) {
memset(arsta, 0, sizeof(*arsta));
arsta->arvif = arvif;
INIT_WORK(&arsta->update_wk, ath10k_sta_rc_update_wk);
}
/* cancel must be done outside the mutex to avoid deadlock */
if ((old_state == IEEE80211_STA_NONE &&
new_state == IEEE80211_STA_NOTEXIST))
cancel_work_sync(&arsta->update_wk);
mutex_lock(&ar->conf_mutex);
if (old_state == IEEE80211_STA_NOTEXIST &&
new_state == IEEE80211_STA_NONE) {
/*
* New station addition.
*/
enum wmi_peer_type peer_type = WMI_PEER_TYPE_DEFAULT;
u32 num_tdls_stations;
u32 num_tdls_vifs;
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac vdev %d peer create %pM (new sta) sta %d / %d peer %d / %d\n",
arvif->vdev_id, sta->addr,
ar->num_stations + 1, ar->max_num_stations,
ar->num_peers + 1, ar->max_num_peers);
ret = ath10k_mac_inc_num_stations(arvif, sta);
if (ret) {
ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
ar->max_num_stations);
goto exit;
}
if (sta->tdls)
peer_type = WMI_PEER_TYPE_TDLS;
ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr,
peer_type);
if (ret) {
ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
sta->addr, arvif->vdev_id, ret);
ath10k_mac_dec_num_stations(arvif, sta);
goto exit;
}
if (!sta->tdls)
goto exit;
num_tdls_stations = ath10k_mac_tdls_vif_stations_count(hw, vif);
num_tdls_vifs = ath10k_mac_tdls_vifs_count(hw);
if (num_tdls_vifs >= ar->max_num_tdls_vdevs &&
num_tdls_stations == 0) {
ath10k_warn(ar, "vdev %i exceeded maximum number of tdls vdevs %i\n",
arvif->vdev_id, ar->max_num_tdls_vdevs);
ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
ath10k_mac_dec_num_stations(arvif, sta);
ret = -ENOBUFS;
goto exit;
}
if (num_tdls_stations == 0) {
/* This is the first tdls peer in current vif */
enum wmi_tdls_state state = WMI_TDLS_ENABLE_ACTIVE;
ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
state);
if (ret) {
ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
arvif->vdev_id, ret);
ath10k_peer_delete(ar, arvif->vdev_id,
sta->addr);
ath10k_mac_dec_num_stations(arvif, sta);
goto exit;
}
}
ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
WMI_TDLS_PEER_STATE_PEERING);
if (ret) {
ath10k_warn(ar,
"failed to update tdls peer %pM for vdev %d when adding a new sta: %i\n",
sta->addr, arvif->vdev_id, ret);
ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
ath10k_mac_dec_num_stations(arvif, sta);
if (num_tdls_stations != 0)
goto exit;
ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
WMI_TDLS_DISABLE);
}
} else if ((old_state == IEEE80211_STA_NONE &&
new_state == IEEE80211_STA_NOTEXIST)) {
/*
* Existing station deletion.
*/
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac vdev %d peer delete %pM (sta gone)\n",
arvif->vdev_id, sta->addr);
ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
if (ret)
ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
sta->addr, arvif->vdev_id, ret);
ath10k_mac_dec_num_stations(arvif, sta);
if (!sta->tdls)
goto exit;
if (ath10k_mac_tdls_vif_stations_count(hw, vif))
goto exit;
/* This was the last tdls peer in current vif */
ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
WMI_TDLS_DISABLE);
if (ret) {
ath10k_warn(ar, "failed to update fw tdls state on vdev %i: %i\n",
arvif->vdev_id, ret);
}
} else if (old_state == IEEE80211_STA_AUTH &&
new_state == IEEE80211_STA_ASSOC &&
(vif->type == NL80211_IFTYPE_AP ||
vif->type == NL80211_IFTYPE_ADHOC)) {
/*
* New association.
*/
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
sta->addr);
ret = ath10k_station_assoc(ar, vif, sta, false);
if (ret)
ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
sta->addr, arvif->vdev_id, ret);
} else if (old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTHORIZED &&
sta->tdls) {
/*
* Tdls station authorized.
*/
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac tdls sta %pM authorized\n",
sta->addr);
ret = ath10k_station_assoc(ar, vif, sta, false);
if (ret) {
ath10k_warn(ar, "failed to associate tdls station %pM for vdev %i: %i\n",
sta->addr, arvif->vdev_id, ret);
goto exit;
}
ret = ath10k_mac_tdls_peer_update(ar, arvif->vdev_id, sta,
WMI_TDLS_PEER_STATE_CONNECTED);
if (ret)
ath10k_warn(ar, "failed to update tdls peer %pM for vdev %i: %i\n",
sta->addr, arvif->vdev_id, ret);
} else if (old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTH &&
(vif->type == NL80211_IFTYPE_AP ||
vif->type == NL80211_IFTYPE_ADHOC)) {
/*
* Disassociation.
*/
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
sta->addr);
ret = ath10k_station_disassoc(ar, vif, sta);
if (ret)
ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
sta->addr, arvif->vdev_id, ret);
}
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
u16 ac, bool enable)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct wmi_sta_uapsd_auto_trig_arg arg = {};
u32 prio = 0, acc = 0;
u32 value = 0;
int ret = 0;
lockdep_assert_held(&ar->conf_mutex);
if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
return 0;
switch (ac) {
case IEEE80211_AC_VO:
value = WMI_STA_PS_UAPSD_AC3_DELIVERY_EN |
WMI_STA_PS_UAPSD_AC3_TRIGGER_EN;
prio = 7;
acc = 3;
break;
case IEEE80211_AC_VI:
value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
prio = 5;
acc = 2;
break;
case IEEE80211_AC_BE:
value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
prio = 2;
acc = 1;
break;
case IEEE80211_AC_BK:
value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
prio = 0;
acc = 0;
break;
}
if (enable)
arvif->u.sta.uapsd |= value;
else
arvif->u.sta.uapsd &= ~value;
ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
WMI_STA_PS_PARAM_UAPSD,
arvif->u.sta.uapsd);
if (ret) {
ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
goto exit;
}
if (arvif->u.sta.uapsd)
value = WMI_STA_PS_RX_WAKE_POLICY_POLL_UAPSD;
else
value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;
ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
WMI_STA_PS_PARAM_RX_WAKE_POLICY,
value);
if (ret)
ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
ret = ath10k_mac_vif_recalc_ps_wake_threshold(arvif);
if (ret) {
ath10k_warn(ar, "failed to recalc ps wake threshold on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
ret = ath10k_mac_vif_recalc_ps_poll_count(arvif);
if (ret) {
ath10k_warn(ar, "failed to recalc ps poll count on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
if (test_bit(WMI_SERVICE_STA_UAPSD_BASIC_AUTO_TRIG, ar->wmi.svc_map) ||
test_bit(WMI_SERVICE_STA_UAPSD_VAR_AUTO_TRIG, ar->wmi.svc_map)) {
/* Only userspace can make an educated decision when to send
* trigger frame. The following effectively disables u-UAPSD
* autotrigger in firmware (which is enabled by default
* provided the autotrigger service is available).
*/
arg.wmm_ac = acc;
arg.user_priority = prio;
arg.service_interval = 0;
arg.suspend_interval = WMI_STA_UAPSD_MAX_INTERVAL_MSEC;
arg.delay_interval = WMI_STA_UAPSD_MAX_INTERVAL_MSEC;
ret = ath10k_wmi_vdev_sta_uapsd(ar, arvif->vdev_id,
arvif->bssid, &arg, 1);
if (ret) {
ath10k_warn(ar, "failed to set uapsd auto trigger %d\n",
ret);
return ret;
}
}
exit:
return ret;
}
static int ath10k_conf_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u16 ac,
const struct ieee80211_tx_queue_params *params)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct wmi_wmm_params_arg *p = NULL;
int ret;
mutex_lock(&ar->conf_mutex);
switch (ac) {
case IEEE80211_AC_VO:
p = &arvif->wmm_params.ac_vo;
break;
case IEEE80211_AC_VI:
p = &arvif->wmm_params.ac_vi;
break;
case IEEE80211_AC_BE:
p = &arvif->wmm_params.ac_be;
break;
case IEEE80211_AC_BK:
p = &arvif->wmm_params.ac_bk;
break;
}
if (WARN_ON(!p)) {
ret = -EINVAL;
goto exit;
}
p->cwmin = params->cw_min;
p->cwmax = params->cw_max;
p->aifs = params->aifs;
/*
* The channel time duration programmed in the HW is in absolute
* microseconds, while mac80211 gives the txop in units of
* 32 microseconds.
*/
p->txop = params->txop * 32;
if (ar->wmi.ops->gen_vdev_wmm_conf) {
ret = ath10k_wmi_vdev_wmm_conf(ar, arvif->vdev_id,
&arvif->wmm_params);
if (ret) {
ath10k_warn(ar, "failed to set vdev wmm params on vdev %i: %d\n",
arvif->vdev_id, ret);
goto exit;
}
} else {
/* This won't work well with multi-interface cases but it's
* better than nothing.
*/
ret = ath10k_wmi_pdev_set_wmm_params(ar, &arvif->wmm_params);
if (ret) {
ath10k_warn(ar, "failed to set wmm params: %d\n", ret);
goto exit;
}
}
ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
if (ret)
ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
#define ATH10K_ROC_TIMEOUT_HZ (2*HZ)
static int ath10k_remain_on_channel(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel *chan,
int duration,
enum ieee80211_roc_type type)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct wmi_start_scan_arg arg;
int ret = 0;
u32 scan_time_msec;
mutex_lock(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
switch (ar->scan.state) {
case ATH10K_SCAN_IDLE:
reinit_completion(&ar->scan.started);
reinit_completion(&ar->scan.completed);
reinit_completion(&ar->scan.on_channel);
ar->scan.state = ATH10K_SCAN_STARTING;
ar->scan.is_roc = true;
ar->scan.vdev_id = arvif->vdev_id;
ar->scan.roc_freq = chan->center_freq;
ret = 0;
break;
case ATH10K_SCAN_STARTING:
case ATH10K_SCAN_RUNNING:
case ATH10K_SCAN_ABORTING:
ret = -EBUSY;
break;
}
spin_unlock_bh(&ar->data_lock);
if (ret)
goto exit;
scan_time_msec = ar->hw->wiphy->max_remain_on_channel_duration * 2;
memset(&arg, 0, sizeof(arg));
ath10k_wmi_start_scan_init(ar, &arg);
arg.vdev_id = arvif->vdev_id;
arg.scan_id = ATH10K_SCAN_ID;
arg.n_channels = 1;
arg.channels[0] = chan->center_freq;
arg.dwell_time_active = scan_time_msec;
arg.dwell_time_passive = scan_time_msec;
arg.max_scan_time = scan_time_msec;
arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;
arg.burst_duration_ms = duration;
ret = ath10k_start_scan(ar, &arg);
if (ret) {
ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
spin_lock_bh(&ar->data_lock);
ar->scan.state = ATH10K_SCAN_IDLE;
spin_unlock_bh(&ar->data_lock);
goto exit;
}
ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
if (ret == 0) {
ath10k_warn(ar, "failed to switch to channel for roc scan\n");
ret = ath10k_scan_stop(ar);
if (ret)
ath10k_warn(ar, "failed to stop scan: %d\n", ret);
ret = -ETIMEDOUT;
goto exit;
}
ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
msecs_to_jiffies(duration));
ret = 0;
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static int ath10k_cancel_remain_on_channel(struct ieee80211_hw *hw)
{
struct ath10k *ar = hw->priv;
mutex_lock(&ar->conf_mutex);
ath10k_scan_abort(ar);
mutex_unlock(&ar->conf_mutex);
cancel_delayed_work_sync(&ar->scan.timeout);
return 0;
}
/*
* Both RTS and Fragmentation threshold are interface-specific
* in ath10k, but device-specific in mac80211.
*/
static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif;
int ret = 0;
mutex_lock(&ar->conf_mutex);
list_for_each_entry(arvif, &ar->arvifs, list) {
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
arvif->vdev_id, value);
ret = ath10k_mac_set_rts(arvif, value);
if (ret) {
ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
arvif->vdev_id, ret);
break;
}
}
mutex_unlock(&ar->conf_mutex);
return ret;
}
static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
u32 queues, bool drop)
{
struct ath10k *ar = hw->priv;
bool skip;
int ret;
/* mac80211 doesn't care if we really xmit queued frames or not
* we'll collect those frames either way if we stop/delete vdevs */
if (drop)
return;
mutex_lock(&ar->conf_mutex);
if (ar->state == ATH10K_STATE_WEDGED)
goto skip;
ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
bool empty;
spin_lock_bh(&ar->htt.tx_lock);
empty = (ar->htt.num_pending_tx == 0);
spin_unlock_bh(&ar->htt.tx_lock);
skip = (ar->state == ATH10K_STATE_WEDGED) ||
test_bit(ATH10K_FLAG_CRASH_FLUSH,
&ar->dev_flags);
(empty || skip);
}), ATH10K_FLUSH_TIMEOUT_HZ);
if (ret <= 0 || skip)
ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %i\n",
skip, ar->state, ret);
skip:
mutex_unlock(&ar->conf_mutex);
}
/* TODO: Implement this function properly
* For now it is needed to reply to Probe Requests in IBSS mode.
* Propably we need this information from FW.
*/
static int ath10k_tx_last_beacon(struct ieee80211_hw *hw)
{
return 1;
}
static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
enum ieee80211_reconfig_type reconfig_type)
{
struct ath10k *ar = hw->priv;
if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
return;
mutex_lock(&ar->conf_mutex);
/* If device failed to restart it will be in a different state, e.g.
* ATH10K_STATE_WEDGED */
if (ar->state == ATH10K_STATE_RESTARTED) {
ath10k_info(ar, "device successfully recovered\n");
ar->state = ATH10K_STATE_ON;
ieee80211_wake_queues(ar->hw);
}
mutex_unlock(&ar->conf_mutex);
}
static int ath10k_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct ath10k *ar = hw->priv;
struct ieee80211_supported_band *sband;
struct survey_info *ar_survey = &ar->survey[idx];
int ret = 0;
mutex_lock(&ar->conf_mutex);
sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
if (sband && idx >= sband->n_channels) {
idx -= sband->n_channels;
sband = NULL;
}
if (!sband)
sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
if (!sband || idx >= sband->n_channels) {
ret = -ENOENT;
goto exit;
}
spin_lock_bh(&ar->data_lock);
memcpy(survey, ar_survey, sizeof(*survey));
spin_unlock_bh(&ar->data_lock);
survey->channel = &sband->channels[idx];
if (ar->rx_channel == survey->channel)
survey->filled |= SURVEY_INFO_IN_USE;
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static bool
ath10k_mac_bitrate_mask_has_single_rate(struct ath10k *ar,
enum ieee80211_band band,
const struct cfg80211_bitrate_mask *mask)
{
int num_rates = 0;
int i;
num_rates += hweight32(mask->control[band].legacy);
for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++)
num_rates += hweight8(mask->control[band].ht_mcs[i]);
for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++)
num_rates += hweight16(mask->control[band].vht_mcs[i]);
return num_rates == 1;
}
static bool
ath10k_mac_bitrate_mask_get_single_nss(struct ath10k *ar,
enum ieee80211_band band,
const struct cfg80211_bitrate_mask *mask,
int *nss)
{
struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
u16 vht_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
u8 ht_nss_mask = 0;
u8 vht_nss_mask = 0;
int i;
if (mask->control[band].legacy)
return false;
for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++) {
if (mask->control[band].ht_mcs[i] == 0)
continue;
else if (mask->control[band].ht_mcs[i] ==
sband->ht_cap.mcs.rx_mask[i])
ht_nss_mask |= BIT(i);
else
return false;
}
for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++) {
if (mask->control[band].vht_mcs[i] == 0)
continue;
else if (mask->control[band].vht_mcs[i] ==
ath10k_mac_get_max_vht_mcs_map(vht_mcs_map, i))
vht_nss_mask |= BIT(i);
else
return false;
}
if (ht_nss_mask != vht_nss_mask)
return false;
if (ht_nss_mask == 0)
return false;
if (BIT(fls(ht_nss_mask)) - 1 != ht_nss_mask)
return false;
*nss = fls(ht_nss_mask);
return true;
}
static int
ath10k_mac_bitrate_mask_get_single_rate(struct ath10k *ar,
enum ieee80211_band band,
const struct cfg80211_bitrate_mask *mask,
u8 *rate, u8 *nss)
{
struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
int rate_idx;
int i;
u16 bitrate;
u8 preamble;
u8 hw_rate;
if (hweight32(mask->control[band].legacy) == 1) {
rate_idx = ffs(mask->control[band].legacy) - 1;
hw_rate = sband->bitrates[rate_idx].hw_value;
bitrate = sband->bitrates[rate_idx].bitrate;
if (ath10k_mac_bitrate_is_cck(bitrate))
preamble = WMI_RATE_PREAMBLE_CCK;
else
preamble = WMI_RATE_PREAMBLE_OFDM;
*nss = 1;
*rate = preamble << 6 |
(*nss - 1) << 4 |
hw_rate << 0;
return 0;
}
for (i = 0; i < ARRAY_SIZE(mask->control[band].ht_mcs); i++) {
if (hweight8(mask->control[band].ht_mcs[i]) == 1) {
*nss = i + 1;
*rate = WMI_RATE_PREAMBLE_HT << 6 |
(*nss - 1) << 4 |
(ffs(mask->control[band].ht_mcs[i]) - 1);
return 0;
}
}
for (i = 0; i < ARRAY_SIZE(mask->control[band].vht_mcs); i++) {
if (hweight16(mask->control[band].vht_mcs[i]) == 1) {
*nss = i + 1;
*rate = WMI_RATE_PREAMBLE_VHT << 6 |
(*nss - 1) << 4 |
(ffs(mask->control[band].vht_mcs[i]) - 1);
return 0;
}
}
return -EINVAL;
}
static int ath10k_mac_set_fixed_rate_params(struct ath10k_vif *arvif,
u8 rate, u8 nss, u8 sgi)
{
struct ath10k *ar = arvif->ar;
u32 vdev_param;
int ret;
lockdep_assert_held(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac set fixed rate params vdev %i rate 0x%02hhx nss %hhu sgi %hhu\n",
arvif->vdev_id, rate, nss, sgi);
vdev_param = ar->wmi.vdev_param->fixed_rate;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, rate);
if (ret) {
ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
rate, ret);
return ret;
}
vdev_param = ar->wmi.vdev_param->nss;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, nss);
if (ret) {
ath10k_warn(ar, "failed to set nss param %d: %d\n", nss, ret);
return ret;
}
vdev_param = ar->wmi.vdev_param->sgi;
ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, sgi);
if (ret) {
ath10k_warn(ar, "failed to set sgi param %d: %d\n", sgi, ret);
return ret;
}
return 0;
}
static bool
ath10k_mac_can_set_bitrate_mask(struct ath10k *ar,
enum ieee80211_band band,
const struct cfg80211_bitrate_mask *mask)
{
int i;
u16 vht_mcs;
/* Due to firmware limitation in WMI_PEER_ASSOC_CMDID it is impossible
* to express all VHT MCS rate masks. Effectively only the following
* ranges can be used: none, 0-7, 0-8 and 0-9.
*/
for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
vht_mcs = mask->control[band].vht_mcs[i];
switch (vht_mcs) {
case 0:
case BIT(8) - 1:
case BIT(9) - 1:
case BIT(10) - 1:
break;
default:
ath10k_warn(ar, "refusing bitrate mask with missing 0-7 VHT MCS rates\n");
return false;
}
}
return true;
}
static void ath10k_mac_set_bitrate_mask_iter(void *data,
struct ieee80211_sta *sta)
{
struct ath10k_vif *arvif = data;
struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
struct ath10k *ar = arvif->ar;
if (arsta->arvif != arvif)
return;
spin_lock_bh(&ar->data_lock);
arsta->changed |= IEEE80211_RC_SUPP_RATES_CHANGED;
spin_unlock_bh(&ar->data_lock);
ieee80211_queue_work(ar->hw, &arsta->update_wk);
}
static int ath10k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const struct cfg80211_bitrate_mask *mask)
{
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
struct cfg80211_chan_def def;
struct ath10k *ar = arvif->ar;
enum ieee80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
u8 rate;
u8 nss;
u8 sgi;
int single_nss;
int ret;
if (ath10k_mac_vif_chan(vif, &def))
return -EPERM;
band = def.chan->band;
ht_mcs_mask = mask->control[band].ht_mcs;
vht_mcs_mask = mask->control[band].vht_mcs;
sgi = mask->control[band].gi;
if (sgi == NL80211_TXRATE_FORCE_LGI)
return -EINVAL;
if (ath10k_mac_bitrate_mask_has_single_rate(ar, band, mask)) {
ret = ath10k_mac_bitrate_mask_get_single_rate(ar, band, mask,
&rate, &nss);
if (ret) {
ath10k_warn(ar, "failed to get single rate for vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
} else if (ath10k_mac_bitrate_mask_get_single_nss(ar, band, mask,
&single_nss)) {
rate = WMI_FIXED_RATE_NONE;
nss = single_nss;
} else {
rate = WMI_FIXED_RATE_NONE;
nss = min(ar->num_rf_chains,
max(ath10k_mac_max_ht_nss(ht_mcs_mask),
ath10k_mac_max_vht_nss(vht_mcs_mask)));
if (!ath10k_mac_can_set_bitrate_mask(ar, band, mask))
return -EINVAL;
mutex_lock(&ar->conf_mutex);
arvif->bitrate_mask = *mask;
ieee80211_iterate_stations_atomic(ar->hw,
ath10k_mac_set_bitrate_mask_iter,
arvif);
mutex_unlock(&ar->conf_mutex);
}
mutex_lock(&ar->conf_mutex);
ret = ath10k_mac_set_fixed_rate_params(arvif, rate, nss, sgi);
if (ret) {
ath10k_warn(ar, "failed to set fixed rate params on vdev %i: %d\n",
arvif->vdev_id, ret);
goto exit;
}
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static void ath10k_sta_rc_update(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
u32 changed)
{
struct ath10k *ar = hw->priv;
struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
u32 bw, smps;
spin_lock_bh(&ar->data_lock);
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac sta rc update for %pM changed %08x bw %d nss %d smps %d\n",
sta->addr, changed, sta->bandwidth, sta->rx_nss,
sta->smps_mode);
if (changed & IEEE80211_RC_BW_CHANGED) {
bw = WMI_PEER_CHWIDTH_20MHZ;
switch (sta->bandwidth) {
case IEEE80211_STA_RX_BW_20:
bw = WMI_PEER_CHWIDTH_20MHZ;
break;
case IEEE80211_STA_RX_BW_40:
bw = WMI_PEER_CHWIDTH_40MHZ;
break;
case IEEE80211_STA_RX_BW_80:
bw = WMI_PEER_CHWIDTH_80MHZ;
break;
case IEEE80211_STA_RX_BW_160:
ath10k_warn(ar, "Invalid bandwidth %d in rc update for %pM\n",
sta->bandwidth, sta->addr);
bw = WMI_PEER_CHWIDTH_20MHZ;
break;
}
arsta->bw = bw;
}
if (changed & IEEE80211_RC_NSS_CHANGED)
arsta->nss = sta->rx_nss;
if (changed & IEEE80211_RC_SMPS_CHANGED) {
smps = WMI_PEER_SMPS_PS_NONE;
switch (sta->smps_mode) {
case IEEE80211_SMPS_AUTOMATIC:
case IEEE80211_SMPS_OFF:
smps = WMI_PEER_SMPS_PS_NONE;
break;
case IEEE80211_SMPS_STATIC:
smps = WMI_PEER_SMPS_STATIC;
break;
case IEEE80211_SMPS_DYNAMIC:
smps = WMI_PEER_SMPS_DYNAMIC;
break;
case IEEE80211_SMPS_NUM_MODES:
ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
sta->smps_mode, sta->addr);
smps = WMI_PEER_SMPS_PS_NONE;
break;
}
arsta->smps = smps;
}
arsta->changed |= changed;
spin_unlock_bh(&ar->data_lock);
ieee80211_queue_work(hw, &arsta->update_wk);
}
static u64 ath10k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
/*
* FIXME: Return 0 for time being. Need to figure out whether FW
* has the API to fetch 64-bit local TSF
*/
return 0;
}
static int ath10k_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid, u16 *ssn,
u8 buf_size)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
arvif->vdev_id, sta->addr, tid, action);
switch (action) {
case IEEE80211_AMPDU_RX_START:
case IEEE80211_AMPDU_RX_STOP:
/* HTT AddBa/DelBa events trigger mac80211 Rx BA session
* creation/removal. Do we need to verify this?
*/
return 0;
case IEEE80211_AMPDU_TX_START:
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
case IEEE80211_AMPDU_TX_OPERATIONAL:
/* Firmware offloads Tx aggregation entirely so deny mac80211
* Tx aggregation requests.
*/
return -EOPNOTSUPP;
}
return -EINVAL;
}
static void
ath10k_mac_update_rx_channel(struct ath10k *ar)
{
struct cfg80211_chan_def *def = NULL;
/* Both locks are required because ar->rx_channel is modified. This
* allows readers to hold either lock.
*/
lockdep_assert_held(&ar->conf_mutex);
lockdep_assert_held(&ar->data_lock);
/* FIXME: Sort of an optimization and a workaround. Peers and vifs are
* on a linked list now. Doing a lookup peer -> vif -> chanctx for each
* ppdu on Rx may reduce performance on low-end systems. It should be
* possible to make tables/hashmaps to speed the lookup up (be vary of
* cpu data cache lines though regarding sizes) but to keep the initial
* implementation simple and less intrusive fallback to the slow lookup
* only for multi-channel cases. Single-channel cases will remain to
* use the old channel derival and thus performance should not be
* affected much.
*/
rcu_read_lock();
if (ath10k_mac_num_chanctxs(ar) == 1) {
ieee80211_iter_chan_contexts_atomic(ar->hw,
ath10k_mac_get_any_chandef_iter,
&def);
ar->rx_channel = def->chan;
} else {
ar->rx_channel = NULL;
}
rcu_read_unlock();
}
static void
ath10k_mac_chan_ctx_init(struct ath10k *ar,
struct ath10k_chanctx *arctx,
struct ieee80211_chanctx_conf *conf)
{
lockdep_assert_held(&ar->conf_mutex);
lockdep_assert_held(&ar->data_lock);
memset(arctx, 0, sizeof(*arctx));
arctx->conf = *conf;
}
static int
ath10k_mac_op_add_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
struct ath10k *ar = hw->priv;
struct ath10k_chanctx *arctx = (void *)ctx->drv_priv;
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac chanctx add freq %hu width %d ptr %p\n",
ctx->def.chan->center_freq, ctx->def.width, ctx);
mutex_lock(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
ath10k_mac_chan_ctx_init(ar, arctx, ctx);
ath10k_mac_update_rx_channel(ar);
spin_unlock_bh(&ar->data_lock);
ath10k_recalc_radar_detection(ar);
ath10k_monitor_recalc(ar);
mutex_unlock(&ar->conf_mutex);
return 0;
}
static void
ath10k_mac_op_remove_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
struct ath10k *ar = hw->priv;
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac chanctx remove freq %hu width %d ptr %p\n",
ctx->def.chan->center_freq, ctx->def.width, ctx);
mutex_lock(&ar->conf_mutex);
spin_lock_bh(&ar->data_lock);
ath10k_mac_update_rx_channel(ar);
spin_unlock_bh(&ar->data_lock);
ath10k_recalc_radar_detection(ar);
ath10k_monitor_recalc(ar);
mutex_unlock(&ar->conf_mutex);
}
static void
ath10k_mac_op_change_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx,
u32 changed)
{
struct ath10k *ar = hw->priv;
struct ath10k_chanctx *arctx = (void *)ctx->drv_priv;
mutex_lock(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac chanctx change freq %hu->%hu width %d->%d ptr %p changed %x\n",
arctx->conf.def.chan->center_freq,
ctx->def.chan->center_freq,
arctx->conf.def.width, ctx->def.width,
ctx, changed);
/* This shouldn't really happen because channel switching should use
* switch_vif_chanctx().
*/
if (WARN_ON(changed & IEEE80211_CHANCTX_CHANGE_CHANNEL))
goto unlock;
spin_lock_bh(&ar->data_lock);
arctx->conf = *ctx;
spin_unlock_bh(&ar->data_lock);
ath10k_recalc_radar_detection(ar);
/* FIXME: How to configure Rx chains properly? */
/* No other actions are actually necessary. Firmware maintains channel
* definitions per vdev internally and there's no host-side channel
* context abstraction to configure, e.g. channel width.
*/
unlock:
mutex_unlock(&ar->conf_mutex);
}
static int
ath10k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx)
{
struct ath10k *ar = hw->priv;
struct ath10k_chanctx *arctx = (void *)ctx->drv_priv;
struct ath10k_vif *arvif = (void *)vif->drv_priv;
int ret;
mutex_lock(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac chanctx assign ptr %p vdev_id %i\n",
ctx, arvif->vdev_id);
if (WARN_ON(arvif->is_started)) {
mutex_unlock(&ar->conf_mutex);
return -EBUSY;
}
ret = ath10k_vdev_start(arvif, &arctx->conf.def);
if (ret) {
ath10k_warn(ar, "failed to start vdev %i addr %pM on freq %d: %d\n",
arvif->vdev_id, vif->addr,
arctx->conf.def.chan->center_freq, ret);
goto err;
}
arvif->is_started = true;
if (vif->type == NL80211_IFTYPE_MONITOR) {
ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, 0, vif->addr);
if (ret) {
ath10k_warn(ar, "failed to up monitor vdev %i: %d\n",
arvif->vdev_id, ret);
goto err_stop;
}
arvif->is_up = true;
}
mutex_unlock(&ar->conf_mutex);
return 0;
err_stop:
ath10k_vdev_stop(arvif);
arvif->is_started = false;
err:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static void
ath10k_mac_op_unassign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = (void *)vif->drv_priv;
int ret;
mutex_lock(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac chanctx unassign ptr %p vdev_id %i\n",
ctx, arvif->vdev_id);
WARN_ON(!arvif->is_started);
if (vif->type == NL80211_IFTYPE_MONITOR) {
WARN_ON(!arvif->is_up);
ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
if (ret)
ath10k_warn(ar, "failed to down monitor vdev %i: %d\n",
arvif->vdev_id, ret);
arvif->is_up = false;
}
ret = ath10k_vdev_stop(arvif);
if (ret)
ath10k_warn(ar, "failed to stop vdev %i: %d\n",
arvif->vdev_id, ret);
arvif->is_started = false;
mutex_unlock(&ar->conf_mutex);
}
static int
ath10k_mac_op_switch_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif_chanctx_switch *vifs,
int n_vifs,
enum ieee80211_chanctx_switch_mode mode)
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif;
struct ath10k_chanctx *arctx_new, *arctx_old;
int i;
mutex_lock(&ar->conf_mutex);
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac chanctx switch n_vifs %d mode %d\n",
n_vifs, mode);
spin_lock_bh(&ar->data_lock);
for (i = 0; i < n_vifs; i++) {
arvif = ath10k_vif_to_arvif(vifs[i].vif);
arctx_new = (void *)vifs[i].new_ctx->drv_priv;
arctx_old = (void *)vifs[i].old_ctx->drv_priv;
ath10k_dbg(ar, ATH10K_DBG_MAC,
"mac chanctx switch vdev_id %i freq %hu->%hu width %d->%d ptr %p->%p\n",
arvif->vdev_id,
vifs[i].old_ctx->def.chan->center_freq,
vifs[i].new_ctx->def.chan->center_freq,
vifs[i].old_ctx->def.width,
vifs[i].new_ctx->def.width,
arctx_old, arctx_new);
if (mode == CHANCTX_SWMODE_SWAP_CONTEXTS) {
ath10k_mac_chan_ctx_init(ar, arctx_new,
vifs[i].new_ctx);
}
arctx_new->conf = *vifs[i].new_ctx;
/* FIXME: ath10k_mac_chan_reconfigure() uses current, i.e. not
* yet updated chanctx_conf pointer.
*/
arctx_old->conf = *vifs[i].new_ctx;
}
ath10k_mac_update_rx_channel(ar);
spin_unlock_bh(&ar->data_lock);
/* FIXME: Reconfigure only affected vifs */
ath10k_mac_chan_reconfigure(ar);
mutex_unlock(&ar->conf_mutex);
return 0;
}
static const struct ieee80211_ops ath10k_ops = {
.tx = ath10k_tx,
.start = ath10k_start,
.stop = ath10k_stop,
.config = ath10k_config,
.add_interface = ath10k_add_interface,
.remove_interface = ath10k_remove_interface,
.configure_filter = ath10k_configure_filter,
.bss_info_changed = ath10k_bss_info_changed,
.hw_scan = ath10k_hw_scan,
.cancel_hw_scan = ath10k_cancel_hw_scan,
.set_key = ath10k_set_key,
.set_default_unicast_key = ath10k_set_default_unicast_key,
.sta_state = ath10k_sta_state,
.conf_tx = ath10k_conf_tx,
.remain_on_channel = ath10k_remain_on_channel,
.cancel_remain_on_channel = ath10k_cancel_remain_on_channel,
.set_rts_threshold = ath10k_set_rts_threshold,
.flush = ath10k_flush,
.tx_last_beacon = ath10k_tx_last_beacon,
.set_antenna = ath10k_set_antenna,
.get_antenna = ath10k_get_antenna,
.reconfig_complete = ath10k_reconfig_complete,
.get_survey = ath10k_get_survey,
.set_bitrate_mask = ath10k_mac_op_set_bitrate_mask,
.sta_rc_update = ath10k_sta_rc_update,
.get_tsf = ath10k_get_tsf,
.ampdu_action = ath10k_ampdu_action,
.get_et_sset_count = ath10k_debug_get_et_sset_count,
.get_et_stats = ath10k_debug_get_et_stats,
.get_et_strings = ath10k_debug_get_et_strings,
.add_chanctx = ath10k_mac_op_add_chanctx,
.remove_chanctx = ath10k_mac_op_remove_chanctx,
.change_chanctx = ath10k_mac_op_change_chanctx,
.assign_vif_chanctx = ath10k_mac_op_assign_vif_chanctx,
.unassign_vif_chanctx = ath10k_mac_op_unassign_vif_chanctx,
.switch_vif_chanctx = ath10k_mac_op_switch_vif_chanctx,
CFG80211_TESTMODE_CMD(ath10k_tm_cmd)
#ifdef CONFIG_PM
.suspend = ath10k_wow_op_suspend,
.resume = ath10k_wow_op_resume,
#endif
#ifdef CPTCFG_MAC80211_DEBUGFS
.sta_add_debugfs = ath10k_sta_add_debugfs,
#endif
};
#define CHAN2G(_channel, _freq, _flags) { \
.band = IEEE80211_BAND_2GHZ, \
.hw_value = (_channel), \
.center_freq = (_freq), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
#define CHAN5G(_channel, _freq, _flags) { \
.band = IEEE80211_BAND_5GHZ, \
.hw_value = (_channel), \
.center_freq = (_freq), \
.flags = (_flags), \
.max_antenna_gain = 0, \
.max_power = 30, \
}
static const struct ieee80211_channel ath10k_2ghz_channels[] = {
CHAN2G(1, 2412, 0),
CHAN2G(2, 2417, 0),
CHAN2G(3, 2422, 0),
CHAN2G(4, 2427, 0),
CHAN2G(5, 2432, 0),
CHAN2G(6, 2437, 0),
CHAN2G(7, 2442, 0),
CHAN2G(8, 2447, 0),
CHAN2G(9, 2452, 0),
CHAN2G(10, 2457, 0),
CHAN2G(11, 2462, 0),
CHAN2G(12, 2467, 0),
CHAN2G(13, 2472, 0),
CHAN2G(14, 2484, 0),
};
static const struct ieee80211_channel ath10k_5ghz_channels[] = {
CHAN5G(36, 5180, 0),
CHAN5G(40, 5200, 0),
CHAN5G(44, 5220, 0),
CHAN5G(48, 5240, 0),
CHAN5G(52, 5260, 0),
CHAN5G(56, 5280, 0),
CHAN5G(60, 5300, 0),
CHAN5G(64, 5320, 0),
CHAN5G(100, 5500, 0),
CHAN5G(104, 5520, 0),
CHAN5G(108, 5540, 0),
CHAN5G(112, 5560, 0),
CHAN5G(116, 5580, 0),
CHAN5G(120, 5600, 0),
CHAN5G(124, 5620, 0),
CHAN5G(128, 5640, 0),
CHAN5G(132, 5660, 0),
CHAN5G(136, 5680, 0),
CHAN5G(140, 5700, 0),
CHAN5G(144, 5720, 0),
CHAN5G(149, 5745, 0),
CHAN5G(153, 5765, 0),
CHAN5G(157, 5785, 0),
CHAN5G(161, 5805, 0),
CHAN5G(165, 5825, 0),
};
struct ath10k *ath10k_mac_create(size_t priv_size)
{
struct ieee80211_hw *hw;
struct ath10k *ar;
hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
if (!hw)
return NULL;
ar = hw->priv;
ar->hw = hw;
return ar;
}
void ath10k_mac_destroy(struct ath10k *ar)
{
ieee80211_free_hw(ar->hw);
}
static const struct ieee80211_iface_limit ath10k_if_limits[] = {
{
.max = 8,
.types = BIT(NL80211_IFTYPE_STATION)
| BIT(NL80211_IFTYPE_P2P_CLIENT)
},
{
.max = 3,
.types = BIT(NL80211_IFTYPE_P2P_GO)
},
{
.max = 1,
.types = BIT(NL80211_IFTYPE_P2P_DEVICE)
},
{
.max = 7,
.types = BIT(NL80211_IFTYPE_AP)
},
};
static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
{
.max = 8,
.types = BIT(NL80211_IFTYPE_AP)
},
};
static const struct ieee80211_iface_combination ath10k_if_comb[] = {
{
.limits = ath10k_if_limits,
.n_limits = ARRAY_SIZE(ath10k_if_limits),
.max_interfaces = 8,
.num_different_channels = 1,
.beacon_int_infra_match = true,
},
};
static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
{
.limits = ath10k_10x_if_limits,
.n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
.max_interfaces = 8,
.num_different_channels = 1,
.beacon_int_infra_match = true,
#ifdef CPTCFG_ATH10K_DFS_CERTIFIED
.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
BIT(NL80211_CHAN_WIDTH_20) |
BIT(NL80211_CHAN_WIDTH_40) |
BIT(NL80211_CHAN_WIDTH_80),
#endif
},
};
static const struct ieee80211_iface_limit ath10k_tlv_if_limit[] = {
{
.max = 2,
.types = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_P2P_GO),
},
{
.max = 1,
.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
},
};
static const struct ieee80211_iface_limit ath10k_tlv_if_limit_ibss[] = {
{
.max = 1,
.types = BIT(NL80211_IFTYPE_STATION),
},
{
.max = 1,
.types = BIT(NL80211_IFTYPE_ADHOC),
},
};
/* FIXME: This is not thouroughly tested. These combinations may over- or
* underestimate hw/fw capabilities.
*/
static struct ieee80211_iface_combination ath10k_tlv_if_comb[] = {
{
.limits = ath10k_tlv_if_limit,
.num_different_channels = 1,
.max_interfaces = 3,
.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit),
},
{
.limits = ath10k_tlv_if_limit_ibss,
.num_different_channels = 1,
.max_interfaces = 2,
.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit_ibss),
},
};
static struct ieee80211_iface_combination ath10k_tlv_qcs_if_comb[] = {
{
.limits = ath10k_tlv_if_limit,
.num_different_channels = 2,
.max_interfaces = 3,
.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit),
},
{
.limits = ath10k_tlv_if_limit_ibss,
.num_different_channels = 1,
.max_interfaces = 2,
.n_limits = ARRAY_SIZE(ath10k_tlv_if_limit_ibss),
},
};
static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
{
struct ieee80211_sta_vht_cap vht_cap = {0};
u16 mcs_map;
u32 val;
int i;
vht_cap.vht_supported = 1;
vht_cap.cap = ar->vht_cap_info;
if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE)) {
val = ar->num_rf_chains - 1;
val <<= IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT;
val &= IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
vht_cap.cap |= val;
}
if (ar->vht_cap_info & (IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)) {
val = ar->num_rf_chains - 1;
val <<= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT;
val &= IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK;
vht_cap.cap |= val;
}
mcs_map = 0;
for (i = 0; i < 8; i++) {
if (i < ar->num_rf_chains)
mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i*2);
else
mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i*2);
}
vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
return vht_cap;
}
static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar)
{
int i;
struct ieee80211_sta_ht_cap ht_cap = {0};
if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED))
return ht_cap;
ht_cap.ht_supported = 1;
ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT;
if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI)
ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI)
ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) {
u32 smps;
smps = WLAN_HT_CAP_SM_PS_DYNAMIC;
smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT;
ht_cap.cap |= smps;
}
if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC)
ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) {
u32 stbc;
stbc = ar->ht_cap_info;
stbc &= WMI_HT_CAP_RX_STBC;
stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT;
stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT;
stbc &= IEEE80211_HT_CAP_RX_STBC;
ht_cap.cap |= stbc;
}
if (ar->ht_cap_info & WMI_HT_CAP_LDPC)
ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;
if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT)
ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT;
/* max AMSDU is implicitly taken from vht_cap_info */
if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK)
ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
for (i = 0; i < ar->num_rf_chains; i++)
ht_cap.mcs.rx_mask[i] = 0xFF;
ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
return ht_cap;
}
static void ath10k_get_arvif_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct ath10k_vif_iter *arvif_iter = data;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
if (arvif->vdev_id == arvif_iter->vdev_id)
arvif_iter->arvif = arvif;
}
struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id)
{
struct ath10k_vif_iter arvif_iter;
u32 flags;
memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter));
arvif_iter.vdev_id = vdev_id;
flags = IEEE80211_IFACE_ITER_RESUME_ALL;
ieee80211_iterate_active_interfaces_atomic(ar->hw,
flags,
ath10k_get_arvif_iter,
&arvif_iter);
if (!arvif_iter.arvif) {
ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
return NULL;
}
return arvif_iter.arvif;
}
int ath10k_mac_register(struct ath10k *ar)
{
static const u32 cipher_suites[] = {
WLAN_CIPHER_SUITE_WEP40,
WLAN_CIPHER_SUITE_WEP104,
WLAN_CIPHER_SUITE_TKIP,
WLAN_CIPHER_SUITE_CCMP,
WLAN_CIPHER_SUITE_AES_CMAC,
};
struct ieee80211_supported_band *band;
struct ieee80211_sta_vht_cap vht_cap;
struct ieee80211_sta_ht_cap ht_cap;
void *channels;
int ret;
SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr);
SET_IEEE80211_DEV(ar->hw, ar->dev);
ht_cap = ath10k_get_ht_cap(ar);
vht_cap = ath10k_create_vht_cap(ar);
BUILD_BUG_ON((ARRAY_SIZE(ath10k_2ghz_channels) +
ARRAY_SIZE(ath10k_5ghz_channels)) !=
ATH10K_NUM_CHANS);
if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
channels = kmemdup(ath10k_2ghz_channels,
sizeof(ath10k_2ghz_channels),
GFP_KERNEL|__GFP_REPEAT|__GFP_HIGH);
if (!channels) {
ret = -ENOMEM;
goto err_free;
}
band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
band->channels = channels;
band->n_bitrates = ath10k_g_rates_size;
band->bitrates = ath10k_g_rates;
band->ht_cap = ht_cap;
/* Enable the VHT support at 2.4 GHz */
band->vht_cap = vht_cap;
ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
}
if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
channels = kmemdup(ath10k_5ghz_channels,
sizeof(ath10k_5ghz_channels),
GFP_KERNEL|__GFP_REPEAT|__GFP_HIGH);
if (!channels) {
ret = -ENOMEM;
goto err_free;
}
band = &ar->mac.sbands[IEEE80211_BAND_5GHZ];
band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels);
band->channels = channels;
band->n_bitrates = ath10k_a_rates_size;
band->bitrates = ath10k_a_rates;
band->ht_cap = ht_cap;
band->vht_cap = vht_cap;
ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
}
ar->hw->wiphy->interface_modes =
BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP);
if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
/* TODO: Have to deal with 2x2 chips if/when the come out. */
ar->supp_tx_chainmask = TARGET_10X_TX_CHAIN_MASK;
ar->supp_rx_chainmask = TARGET_10X_RX_CHAIN_MASK;
} else {
ar->supp_tx_chainmask = TARGET_TX_CHAIN_MASK;
ar->supp_rx_chainmask = TARGET_RX_CHAIN_MASK;
}
ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;
if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
ar->hw->wiphy->interface_modes |=
BIT(NL80211_IFTYPE_P2P_DEVICE) |
BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_P2P_GO);
ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
IEEE80211_HW_SUPPORTS_PS |
IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
IEEE80211_HW_MFP_CAPABLE |
IEEE80211_HW_REPORTS_TX_ACK_STATUS |
IEEE80211_HW_HAS_RATE_CONTROL |
IEEE80211_HW_AP_LINK_PS |
IEEE80211_HW_SPECTRUM_MGMT |
IEEE80211_HW_SW_CRYPTO_CONTROL |
IEEE80211_HW_SUPPORT_FAST_XMIT |
IEEE80211_HW_CONNECTION_MONITOR |
IEEE80211_HW_SUPPORTS_PER_STA_GTK |
IEEE80211_HW_WANT_MONITOR_VIF |
IEEE80211_HW_CHANCTX_STA_CSA |
IEEE80211_HW_QUEUE_CONTROL;
ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;
ar->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
ar->hw->flags |= IEEE80211_HW_TX_AMPDU_SETUP_IN_HW;
}
ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN;
ar->hw->vif_data_size = sizeof(struct ath10k_vif);
ar->hw->sta_data_size = sizeof(struct ath10k_sta);
ar->hw->chanctx_data_size = sizeof(struct ath10k_chanctx);
ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;
if (test_bit(WMI_SERVICE_BEACON_OFFLOAD, ar->wmi.svc_map)) {
ar->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
/* Firmware delivers WPS/P2P Probe Requests frames to driver so
* that userspace (e.g. wpa_supplicant/hostapd) can generate
* correct Probe Responses. This is more of a hack advert..
*/
ar->hw->wiphy->probe_resp_offload |=
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
}
if (test_bit(WMI_SERVICE_TDLS, ar->wmi.svc_map))
ar->hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
ar->hw->wiphy->max_remain_on_channel_duration = 5000;
ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;
ar->hw->wiphy->max_ap_assoc_sta = ar->max_num_stations;
ret = ath10k_wow_init(ar);
if (ret) {
ath10k_warn(ar, "failed to init wow: %d\n", ret);
goto err_free;
}
/*
* on LL hardware queues are managed entirely by the FW
* so we only advertise to mac we can do the queues thing
*/
ar->hw->queues = IEEE80211_MAX_QUEUES;
/* vdev_ids are used as hw queue numbers. Make sure offchan tx queue is
* something that vdev_ids can't reach so that we don't stop the queue
* accidentally.
*/
ar->hw->offchannel_tx_hw_queue = IEEE80211_MAX_QUEUES - 1;
switch (ar->wmi.op_version) {
case ATH10K_FW_WMI_OP_VERSION_MAIN:
ar->hw->wiphy->iface_combinations = ath10k_if_comb;
ar->hw->wiphy->n_iface_combinations =
ARRAY_SIZE(ath10k_if_comb);
ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
break;
case ATH10K_FW_WMI_OP_VERSION_TLV:
if (test_bit(WMI_SERVICE_ADAPTIVE_OCS, ar->wmi.svc_map)) {
ar->hw->wiphy->iface_combinations =
ath10k_tlv_qcs_if_comb;
ar->hw->wiphy->n_iface_combinations =
ARRAY_SIZE(ath10k_tlv_qcs_if_comb);
} else {
ar->hw->wiphy->iface_combinations = ath10k_tlv_if_comb;
ar->hw->wiphy->n_iface_combinations =
ARRAY_SIZE(ath10k_tlv_if_comb);
}
ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
break;
case ATH10K_FW_WMI_OP_VERSION_10_1:
case ATH10K_FW_WMI_OP_VERSION_10_2:
case ATH10K_FW_WMI_OP_VERSION_10_2_4:
ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
ar->hw->wiphy->n_iface_combinations =
ARRAY_SIZE(ath10k_10x_if_comb);
break;
case ATH10K_FW_WMI_OP_VERSION_UNSET:
case ATH10K_FW_WMI_OP_VERSION_MAX:
WARN_ON(1);
ret = -EINVAL;
goto err_free;
}
ar->hw->netdev_features = NETIF_F_HW_CSUM;
if (config_enabled(CPTCFG_ATH10K_DFS_CERTIFIED)) {
/* Init ath dfs pattern detector */
ar->ath_common.debug_mask = ATH_DBG_DFS;
ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common,
NL80211_DFS_UNSET);
if (!ar->dfs_detector)
ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
}
ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
ath10k_reg_notifier);
if (ret) {
ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
goto err_free;
}
ar->hw->wiphy->cipher_suites = cipher_suites;
ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
ret = ieee80211_register_hw(ar->hw);
if (ret) {
ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
goto err_free;
}
if (!ath_is_world_regd(&ar->ath_common.regulatory)) {
ret = regulatory_hint(ar->hw->wiphy,
ar->ath_common.regulatory.alpha2);
if (ret)
goto err_unregister;
}
return 0;
err_unregister:
ieee80211_unregister_hw(ar->hw);
err_free:
kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);
return ret;
}
void ath10k_mac_unregister(struct ath10k *ar)
{
ieee80211_unregister_hw(ar->hw);
if (config_enabled(CPTCFG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
ar->dfs_detector->exit(ar->dfs_detector);
kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);
SET_IEEE80211_DEV(ar->hw, NULL);
}