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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: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Shaul Triebitz 2017-12-10 17:11:38 +02:00 committed by Luca Coelho
parent dad3340fd9
commit 09f1ee8cc1
2 changed files with 42 additions and 1 deletions
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19
drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h
View File

@ -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__ */

24
drivers/net/wireless/intel/iwlwifi/mvm/utils.c
View File

@ -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;