qcacld-3.0: Set add TS failure if AP sends medium time as 0

When AP sends medium time as 0, currently driver proceeds to add
acm entry for the Add TS request and upgrades the AC for the TID.
But this behavior is not correct and seen with some AP.

Downgrade the AC to BE for the TID for which add TS with medium
time 0 was received and send ADD TS failure to SME.

Change-Id: Ia9247e06e3985d699f4215835a55a733738552cb
CRs-Fixed: 2864005

core/mac/src/pe/lim/lim_process_action_frame.c

@@ -563,10 +563,24 @@ static void __lim_process_add_ts_rsp(struct mac_context *mac_ctx,
 				addts.tspec.tsinfo.traffic.userPrio);
 		}
 	}
+
 	pe_debug("Recv AddTsRsp: tsid: %d UP: %d status: %d",
 		addts.tspec.tsinfo.traffic.tsid,
 		addts.tspec.tsinfo.traffic.userPrio, addts.status);
 
+	/*
+	 * If AP sends ADD TS response for an AC with medium time as 0
+	 * treat it as ADD TS failure.
+	 */
+	if (!addts.tspec.mediumTime) {
+		pe_err("Medium Time 0! Add TS failed");
+		/*
+		 * Change the status to failure and fallthrough to send response
+		 * to SME to cleanup the flow.
+		 */
+		addts.status = STATUS_UNSPECIFIED_FAILURE;
+	}
+
 	/* deactivate the response timer */
 	lim_deactivate_and_change_timer(mac_ctx, eLIM_ADDTS_RSP_TIMER);