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>

1 files changed, 23 insertions, 1 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index b2e9a79d4186..2fead5eb63fe 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -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;