iwlwifi: mvm: Add support for different ROC types

Schedule different time event based on the ROC type

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/iwlwifi/mvm/mac80211.c

@@ -1161,7 +1161,7 @@ static int iwl_mvm_roc(struct ieee80211_hw *hw,
 				       &chandef, 1, 1);
 
 	/* Schedule the time events */
-	ret = iwl_mvm_start_p2p_roc(mvm, vif, duration);
+	ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
 
 	mutex_unlock(&mvm->mutex);
 	IWL_DEBUG_MAC80211(mvm, "leave\n");

drivers/net/wireless/iwlwifi/mvm/time-event.c

@@ -76,14 +76,12 @@
 #define TU_TO_JIFFIES(_tu)	(usecs_to_jiffies((_tu) * 1024))
 #define MSEC_TO_TU(_msec)	(_msec*1000/1024)
 
-/* For ROC use a TE type which has priority high enough to be scheduled when
- * there is a concurrent BSS or GO/AP. Currently, use a TE type that has
- * priority similar to the TE priority used for action scans by the FW.
- * TODO: This needs to be changed, based on the reason for the ROC, i.e., use
- * TE_P2P_DEVICE_DISCOVERABLE for remain on channel without mgmt skb, and use
- * TE_P2P_DEVICE_ACTION_SCAN
+/*
+ * For the high priority TE use a time event type that has similar priority to
+ * the FW's action scan priority.
  */
-#define IWL_MVM_ROC_TE_TYPE TE_P2P_DEVICE_ACTION_SCAN
+#define IWL_MVM_ROC_TE_TYPE_NORMAL TE_P2P_DEVICE_DISCOVERABLE
+#define IWL_MVM_ROC_TE_TYPE_MGMT_TX TE_P2P_CLIENT_ASSOC
 
 void iwl_mvm_te_clear_data(struct iwl_mvm *mvm,
 			   struct iwl_mvm_time_event_data *te_data)
@@ -438,7 +436,7 @@ void iwl_mvm_stop_session_protection(struct iwl_mvm *mvm,
 }
 
 int iwl_mvm_start_p2p_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
-			  int duration)
+			  int duration, enum ieee80211_roc_type type)
 {
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 	struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data;
@@ -459,21 +457,29 @@ int iwl_mvm_start_p2p_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	time_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
 	time_cmd.id_and_color =
 		cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
-	time_cmd.id = cpu_to_le32(IWL_MVM_ROC_TE_TYPE);
+
+	switch (type) {
+	case IEEE80211_ROC_TYPE_NORMAL:
+		time_cmd.id = cpu_to_le32(IWL_MVM_ROC_TE_TYPE_NORMAL);
+		break;
+	case IEEE80211_ROC_TYPE_MGMT_TX:
+		time_cmd.id = cpu_to_le32(IWL_MVM_ROC_TE_TYPE_MGMT_TX);
+		break;
+	default:
+		WARN_ONCE(1, "Got an invalid ROC type\n");
+		return -EINVAL;
+	}
 
 	time_cmd.apply_time = cpu_to_le32(0);
 	time_cmd.dep_policy = cpu_to_le32(TE_INDEPENDENT);
 	time_cmd.is_present = cpu_to_le32(1);
-
 	time_cmd.interval = cpu_to_le32(1);
 
 	/*
-	 * IWL_MVM_ROC_TE_TYPE can have lower priority than other events
+	 * The P2P Device TEs can have lower priority than other events
 	 * that are being scheduled by the driver/fw, and thus it might not be
-	 * scheduled. To improve the chances of it being scheduled, allow it to
-	 * be fragmented.
-	 * In addition, for the same reasons, allow to delay the scheduling of
-	 * the time event.
+	 * scheduled. To improve the chances of it being scheduled, allow them
+	 * to be fragmented, and in addition allow them to be delayed.
 	 */
 	time_cmd.max_frags = cpu_to_le32(MSEC_TO_TU(duration)/20);
 	time_cmd.max_delay = cpu_to_le32(MSEC_TO_TU(duration/2));

drivers/net/wireless/iwlwifi/mvm/time-event.h

@@ -162,6 +162,7 @@ int iwl_mvm_rx_time_event_notif(struct iwl_mvm *mvm,
  * that the vif type is NL80211_IFTYPE_P2P_DEVICE
  * @duration: the requested duration in millisecond for the fw to be on the
  * channel that is bound to the vif.
+ * @type: the remain on channel request type
  *
  * This function can be used to issue a remain on channel session,
  * which means that the fw will stay in the channel for the request %duration
@@ -172,7 +173,7 @@ int iwl_mvm_rx_time_event_notif(struct iwl_mvm *mvm,
  * another notification to the driver.
  */
 int iwl_mvm_start_p2p_roc(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
-			  int duration);
+			  int duration, enum ieee80211_roc_type type);
 
 /**
  * iwl_mvm_stop_p2p_roc - stop remain on channel for p2p device functionlity