qcacld-3.0: Avoid STA plus STA concurrent connections

Add policy manager support to avoid simultaneous connections on
STA plus STA concurrent interfaces when
WMI_SERVICE_STA_PLUS_STA_SUPPORT is not set.

Change-Id: I73e65c56a98908128d56af2f4fba8ced5210fff1
CRs-Fixed: 2427828

cmn_services/policy_mgr/inc/wlan_policy_mgr_api.h

@@ -2794,6 +2794,17 @@ bool policy_mgr_allow_sap_go_concurrency(struct wlan_objmgr_psoc *psoc,
 					 uint8_t channel,
 					 uint32_t vdev_id);
 
+/**
+ * policy_mgr_allow_multiple_sta_connections() - API to get FW support
+ * @psoc: Pointer to soc
+ *
+ * This function checks FW support for simultaneous connections on
+ * concurrent STA interfaces.
+ *
+ *  Return: true if supports else false.
+ */
+bool policy_mgr_allow_multiple_sta_connections(struct wlan_objmgr_psoc *psoc);
+
 /**
  * policy_mgr_dual_beacon_on_single_mac_scc_capable() - get capability that
  * whether support dual beacon on same channel on single MAC

cmn_services/policy_mgr/src/wlan_policy_mgr_get_set_utils.c

@@ -1981,14 +1981,22 @@ bool policy_mgr_is_concurrency_allowed(struct wlan_objmgr_psoc *psoc,
 		}
 	}
 
+	count = policy_mgr_mode_specific_connection_count(psoc, PM_STA_MODE,
+							  list);
+
+	/* Check for STA+STA concurrency */
+	if (mode == PM_STA_MODE && count &&
+	    !policy_mgr_allow_multiple_sta_connections(psoc)) {
+		policy_mgr_err("No 2nd STA connection, already one STA is connected");
+		goto done;
+	}
+
 	/*
 	 * Check all IBSS+STA concurrencies
 	 *
 	 * don't allow IBSS + STA MCC
 	 * don't allow IBSS + STA SCC if IBSS is on DFS channel
 	 */
-	count = policy_mgr_mode_specific_connection_count(psoc,
-				PM_STA_MODE, list);
 	if ((PM_IBSS_MODE == mode) &&
 		(policy_mgr_mode_specific_connection_count(psoc,
 		PM_IBSS_MODE, list)) && count) {
@@ -3414,6 +3422,24 @@ bool policy_mgr_allow_sap_go_concurrency(struct wlan_objmgr_psoc *psoc,
 	return true;
 }
 
+bool policy_mgr_allow_multiple_sta_connections(struct wlan_objmgr_psoc *psoc)
+{
+	struct wmi_unified *wmi_handle;
+
+	wmi_handle = get_wmi_unified_hdl_from_psoc(psoc);
+	if (!wmi_handle) {
+		policy_mgr_debug("Invalid WMI handle");
+		return false;
+	}
+
+	if (wmi_service_enabled(wmi_handle,
+				wmi_service_sta_plus_sta_support))
+		return true;
+
+	policy_mgr_debug("Concurrent STA connections are not supported");
+	return false;
+}
+
 bool policy_mgr_dual_beacon_on_single_mac_scc_capable(
 		struct wlan_objmgr_psoc *psoc)
 {