1 files changed, 74 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/sta.c b/drivers/net/wireless/iwlwifi/mvm/sta.c
index 1fb01ea2e704..812813964847 100644
--- a/drivers/net/wireless/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/iwlwifi/mvm/sta.c
@@ -1448,3 +1448,77 @@ int iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,
 
 	return 0;
 }
+
+void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,
+				   struct iwl_mvm_sta *mvmsta, bool disable)
+{
+	struct iwl_mvm_add_sta_cmd cmd = {
+		.add_modify = STA_MODE_MODIFY,
+		.sta_id = mvmsta->sta_id,
+		.station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,
+		.station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),
+		.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),
+	};
+	int ret;
+
+	if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_DISABLE_STA_TX))
+		return;
+
+	ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd);
+	if (ret)
+		IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);
+}
+
+void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
+				      struct ieee80211_sta *sta,
+				      bool disable)
+{
+	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
+
+	spin_lock_bh(&mvm_sta->lock);
+
+	if (mvm_sta->disable_tx == disable) {
+		spin_unlock_bh(&mvm_sta->lock);
+		return;
+	}
+
+	mvm_sta->disable_tx = disable;
+
+	/*
+	 * Tell mac80211 to start/stop queueing tx for this station,
+	 * but don't stop queueing if there are still pending frames
+	 * for this station.
+	 */
+	if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id]))
+		ieee80211_sta_block_awake(mvm->hw, sta, disable);
+
+	iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);
+
+	spin_unlock_bh(&mvm_sta->lock);
+}
+
+void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
+				       struct iwl_mvm_vif *mvmvif,
+				       bool disable)
+{
+	struct ieee80211_sta *sta;
+	struct iwl_mvm_sta *mvm_sta;
+	int i;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	/* Block/unblock all the stations of the given mvmvif */
+	for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
+		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
+						lockdep_is_held(&mvm->mutex));
+		if (IS_ERR_OR_NULL(sta))
+			continue;
+
+		mvm_sta = iwl_mvm_sta_from_mac80211(sta);
+		if (mvm_sta->mac_id_n_color !=
+		    FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
+			continue;
+
+		iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);
+	}
+}