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Commit 09f1ee8c authored by Shaul Triebitz's avatar Shaul Triebitz Committed by Luca Coelho
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iwlwifi: mvm: send the low latency command 



Recently a new command was added to the firmware
for setting a MAC's low-latency mode.  Use it.

Signed-off-by: default avatarShaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent dad3340f

drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h

+19 −0
Original line number Diff line number Diff line
@@ -67,6 +67,10 @@ 
 * enum iwl_mac_conf_subcmd_ids - mac configuration command IDs

 */

enum iwl_mac_conf_subcmd_ids {

	/**

	 * @LOW_LATENCY_CMD: &struct iwl_mac_low_latency_cmd

	 */

	LOW_LATENCY_CMD = 0x3,

	/**

	 * @CHANNEL_SWITCH_NOA_NOTIF: &struct iwl_channel_switch_noa_notif

	 */
@@ -82,4 +86,19 @@ struct iwl_channel_switch_noa_notif { 
	__le32 id_and_color;

} __packed; /* CHANNEL_SWITCH_START_NTFY_API_S_VER_1 */



/**

 * struct iwl_mac_low_latency_cmd - set/clear mac to 'low-latency mode'

 *

 * @mac_id: MAC ID to whom to apply the low-latency configurations

 * @low_latency_rx: 1/0 to set/clear Rx low latency direction

 * @low_latency_tx: 1/0 to set/clear Tx low latency direction

 * @reserved: reserved for alignment purposes

 */

struct iwl_mac_low_latency_cmd {

	__le32 mac_id;

	u8 low_latency_rx;

	u8 low_latency_tx;

	__le16 reserved;

} __packed; /* MAC_LOW_LATENCY_API_S_VER_1 */



#endif /* __iwl_fw_api_mac_cfg_h__ */

drivers/net/wireless/intel/iwlwifi/mvm/utils.c

+23 −1
Original line number Diff line number Diff line
@@ -1032,12 +1032,34 @@ int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 
{

	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	int res;

	bool low_latency;



	lockdep_assert_held(&mvm->mutex);



	if (iwl_mvm_vif_low_latency(mvmvif) == prev)

	low_latency = iwl_mvm_vif_low_latency(mvmvif);



	if (low_latency == prev)

		return 0;



	if (fw_has_capa(&mvm->fw->ucode_capa,

			IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) {

		struct iwl_mac_low_latency_cmd cmd = {

			.mac_id = cpu_to_le32(mvmvif->id)

		};



		if (low_latency) {

			/* currently we don't care about the direction */

			cmd.low_latency_rx = 1;

			cmd.low_latency_tx = 1;

		}

		res = iwl_mvm_send_cmd_pdu(mvm,

					   iwl_cmd_id(LOW_LATENCY_CMD,

						      MAC_CONF_GROUP, 0),

					   0, sizeof(cmd), &cmd);

		if (res)

			IWL_ERR(mvm, "Failed to send low latency command\n");

	}



	res = iwl_mvm_update_quotas(mvm, false, NULL);

	if (res)

		return res;