qcacld-3.0: Ignore the csa event when roaming is in progress

Ignore the csa event for the station if roaming is in progress on
the same.

Change-Id: Ibb698589484a6a9df021a00986b89bebcc003b27
CRs-Fixed: 2237556

core/wma/src/wma_features.c

@@ -1342,6 +1342,14 @@ int wma_csa_offload_handler(void *handle, uint8_t *event, uint32_t len)
 		return -EINVAL;
 	}
 
+	if (wma->interfaces[vdev_id].roaming_in_progress ||
+		wma->interfaces[vdev_id].roam_synch_in_progress) {
+		WMA_LOGE("Roaming in progress for vdev %d, ignore csa_offload_event",
+				vdev_id);
+		qdf_mem_free(csa_offload_event);
+		return -EINVAL;
+	}
+
 	qdf_mem_zero(csa_offload_event, sizeof(*csa_offload_event));
 	qdf_mem_copy(csa_offload_event->bssId, &bssid, IEEE80211_ADDR_LEN);
 

core/wma/src/wma_scan_roam.c

@@ -2246,6 +2246,14 @@ int wma_roam_synch_event_handler(void *handle, uint8_t *event,
 		return status;
 	}
 
+	/*
+	 * This flag is set during ROAM_START and once this event is being
+	 * executed which is a run to completion, no other event can interrupt
+	 * this in MC thread context. So, it is OK to reset the flag here as
+	 * soon as we receive this event.
+	 */
+	wma->interfaces[synch_event->vdev_id].roaming_in_progress = false;
+
 	if (synch_event->bcn_probe_rsp_len >
 	    param_buf->num_bcn_probe_rsp_frame ||
 	    synch_event->reassoc_req_len >
@@ -5510,6 +5518,8 @@ int wma_roam_event_callback(WMA_HANDLE handle, uint8_t *event_buf,
 		WMA_LOGE("LFR3:Hand-Off Failed for vdevid %x",
 			 wmi_event->vdev_id);
 		wma_roam_ho_fail_handler(wma_handle, wmi_event->vdev_id);
+		wma_handle->interfaces[wmi_event->vdev_id].
+			roaming_in_progress = false;
 		break;
 #endif
 	case WMI_ROAM_REASON_INVALID:
@@ -5518,10 +5528,16 @@ int wma_roam_event_callback(WMA_HANDLE handle, uint8_t *event_buf,
 			WMA_LOGE("Memory unavailable for roam synch data");
 			return -ENOMEM;
 		}
-		if (wmi_event->notif == WMI_ROAM_NOTIF_ROAM_START)
+		if (wmi_event->notif == WMI_ROAM_NOTIF_ROAM_START) {
 			op_code = SIR_ROAMING_START;
-		if (wmi_event->notif == WMI_ROAM_NOTIF_ROAM_ABORT)
+			wma_handle->interfaces[wmi_event->vdev_id].
+				roaming_in_progress = true;
+		}
+		if (wmi_event->notif == WMI_ROAM_NOTIF_ROAM_ABORT) {
 			op_code = SIR_ROAMING_ABORT;
+			wma_handle->interfaces[wmi_event->vdev_id].
+				roaming_in_progress = false;
+		}
 		roam_synch_data->roamedVdevId = wmi_event->vdev_id;
 		wma_handle->pe_roam_synch_cb(
 				(tpAniSirGlobal)wma_handle->mac_context,

core/wma/src/wma_utils.c

@@ -4502,6 +4502,7 @@ QDF_STATUS wma_send_vdev_down_to_fw(t_wma_handle *wma, uint8_t vdev_id)
 	QDF_STATUS status;
 	struct wma_txrx_node *vdev = &wma->interfaces[vdev_id];
 
+	wma->interfaces[vdev_id].roaming_in_progress = false;
 	status = wmi_unified_vdev_down_send(wma->wmi_handle, vdev_id);
 	wma_release_wakelock(&vdev->vdev_start_wakelock);