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ath11k: add support for controlling tx power to a station

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This patch will add the support to control the transmit power
for traffic to a station associated with the AP.

Underlying firmware will enforce that the maximum tx power will
be based on the regulatory requirements. If the user given
transmit power is greater than the allowed tx power in the given
channel, then the firmware will use the maximum tx power in the
same channel.

Max and Min tx power values will depends on number of tx chain
masks. The allowed tx power range values are from 6 to 23.

When 0 is sent to the firmware as tx power, it will revert to
the default tx power for the station.

Signed-off-by: Maharaja Kennadyrajan <mkenna@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Maharaja Kennadyrajan
2019-11-27 14:08:57 +00:00
committed by Kalle Valo
parent fe201947f8
commit 64f1d7e94d
2 changed files with 40 additions and 0 deletions
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37
drivers/net/wireless/ath/ath11k/mac.c
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@@ -2842,6 +2842,41 @@ static int ath11k_mac_op_sta_state(struct ieee80211_hw *hw,
return ret;
}
static int ath11k_mac_op_sta_set_txpwr(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct ath11k *ar = hw->priv;
struct ath11k_vif *arvif = (void *)vif->drv_priv;
int ret = 0;
s16 txpwr;
if (sta->txpwr.type == NL80211_TX_POWER_AUTOMATIC) {
txpwr = 0;
} else {
txpwr = sta->txpwr.power;
if (!txpwr)
return -EINVAL;
}
if (txpwr > ATH11K_TX_POWER_MAX_VAL || txpwr < ATH11K_TX_POWER_MIN_VAL)
return -EINVAL;
mutex_lock(&ar->conf_mutex);
ret = ath11k_wmi_set_peer_param(ar, sta->addr, arvif->vdev_id,
WMI_PEER_USE_FIXED_PWR, txpwr);
if (ret) {
ath11k_warn(ar->ab, "failed to set tx power for station ret: %d\n",
ret);
goto out;
}
out:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static void ath11k_mac_op_sta_rc_update(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
@@ -5311,6 +5346,7 @@ static const struct ieee80211_ops ath11k_ops = {
.cancel_hw_scan = ath11k_mac_op_cancel_hw_scan,
.set_key = ath11k_mac_op_set_key,
.sta_state = ath11k_mac_op_sta_state,
.sta_set_txpwr = ath11k_mac_op_sta_set_txpwr,
.sta_rc_update = ath11k_mac_op_sta_rc_update,
.conf_tx = ath11k_mac_op_conf_tx,
.set_antenna = ath11k_mac_op_set_antenna,
@@ -5571,6 +5607,7 @@ static int ath11k_mac_register(struct ath11k *ar)
ar->hw->wiphy->n_iface_combinations = ARRAY_SIZE(ath11k_if_comb);
wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_STA_TX_PWR);
ar->hw->wiphy->cipher_suites = cipher_suites;
ar->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);