qcacld-3.0: Ignore RSI if disconnect is initiated

Ignore the Roam Synch Indication from firmware if the
user space has already issued a disconnect before
receiving ROAM_START from firmware.

Disconnect might have cleared the roam profile and will be
sitting in the queue for the PE processing to happen.
If the disconnect is in the queue and a roam synch indication
is received, then check the CSR state from the first callback
of roam synch propagation and bail out there itself.

Disconnect will eventually send a ROAM_STOP command to the
firmware and it will cleanup

Change-Id: I528f552cd601dc9d23f709410115fb0af944899d
CRs-Fixed: 2018928

core/sme/inc/csr_neighbor_roam.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011-2016 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2011-2017 The Linux Foundation. All rights reserved.
  *
  * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
  *
@@ -350,14 +350,16 @@ QDF_STATUS csr_roam_read_tsf(tpAniSirGlobal pMac, uint8_t *pTimestamp,
 		const uint8_t sessionId);
 #endif /* FEATURE_WLAN_ESE */
 #ifdef WLAN_FEATURE_ROAM_OFFLOAD
-void csr_roam_synch_callback(tpAniSirGlobal mac,
+QDF_STATUS csr_roam_synch_callback(tpAniSirGlobal mac,
 	roam_offload_synch_ind *roam_synch_data,
 	tpSirBssDescription  bss_desc_ptr, enum sir_roam_op_code reason);
 #else
-static inline void csr_roam_synch_callback(tpAniSirGlobal mac,
+static inline QDF_STATUS csr_roam_synch_callback(tpAniSirGlobal mac,
 	roam_offload_synch_ind *roam_synch_data,
 	tpSirBssDescription  bss_desc_ptr, enum sir_roam_op_code reason)
-{}
+{
+	return QDF_STATUS_E_NOSUPPORT;
+}
 #endif
 void csr_neighbor_roam_state_transition(tpAniSirGlobal mac_ctx,
 		uint8_t newstate, uint8_t session);

core/sme/src/csr/csr_api_roam.c

@@ -20044,9 +20044,9 @@ void csr_roam_fill_tdls_info(tpAniSirGlobal mac_ctx, tCsrRoamInfo *roam_info,
  * is achieved through the already defined callback for assoc completion
  * handler.
  *
- * Return: None.
+ * Return: Success or Failure.
  */
-void csr_roam_synch_callback(tpAniSirGlobal mac_ctx,
+QDF_STATUS csr_roam_synch_callback(tpAniSirGlobal mac_ctx,
 		roam_offload_synch_ind *roam_synch_data,
 		tpSirBssDescription  bss_desc, enum sir_roam_op_code reason)
 {
@@ -20068,12 +20068,12 @@ void csr_roam_synch_callback(tpAniSirGlobal mac_ctx,
 	status = sme_acquire_global_lock(&mac_ctx->sme);
 	if (!QDF_IS_STATUS_SUCCESS(status)) {
 		sms_log(mac_ctx, LOGE, FL("LFR3: Locking failed, bailing out"));
-		return;
+		return status;
 	}
 	if (!session) {
 		sms_log(mac_ctx, LOGE, FL("LFR3: Session not found"));
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return QDF_STATUS_E_FAILURE;
 	}
 
 	sms_log(mac_ctx, LOG1, FL("LFR3: reason: %d"), reason);
@@ -20085,10 +20085,15 @@ void csr_roam_synch_callback(tpAniSirGlobal mac_ctx,
 		 */
 		csr_roam_roaming_offload_timer_action(mac_ctx,
 				0, session_id, ROAMING_OFFLOAD_TIMER_STOP);
+		if (!CSR_IS_ROAM_JOINED(mac_ctx, session_id)) {
+			QDF_TRACE(QDF_MODULE_ID_SME, QDF_TRACE_LEVEL_DEBUG,
+				FL("LFR3: Session not in connected state"));
+			return QDF_STATUS_E_FAILURE;
+		}
 		csr_roam_call_callback(mac_ctx, session_id, NULL, 0,
 				eCSR_ROAM_FT_START, eSIR_SME_SUCCESS);
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return status;
 	case SIR_ROAMING_START:
 		csr_roam_roaming_offload_timer_action(mac_ctx,
 				CSR_ROAMING_OFFLOAD_TIMEOUT_PERIOD, session_id,
@@ -20096,19 +20101,19 @@ void csr_roam_synch_callback(tpAniSirGlobal mac_ctx,
 		csr_roam_call_callback(mac_ctx, session_id, NULL, 0,
 				eCSR_ROAM_START, eSIR_SME_SUCCESS);
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return status;
 	case SIR_ROAMING_ABORT:
 		csr_roam_roaming_offload_timer_action(mac_ctx,
 				0, session_id, ROAMING_OFFLOAD_TIMER_STOP);
 		csr_roam_call_callback(mac_ctx, session_id, NULL, 0,
 				eCSR_ROAM_ABORT, eSIR_SME_SUCCESS);
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return status;
 	case SIR_ROAM_SYNCH_NAPI_OFF:
 		csr_roam_call_callback(mac_ctx, session_id, NULL, 0,
 				eCSR_ROAM_NAPI_OFF, eSIR_SME_SUCCESS);
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return status;
 	case SIR_ROAM_SYNCH_PROPAGATION:
 		break;
 	case SIR_ROAM_SYNCH_COMPLETE:
@@ -20133,20 +20138,21 @@ void csr_roam_synch_callback(tpAniSirGlobal mac_ctx,
 		session->roam_synch_in_progress = false;
 		cds_check_concurrent_intf_and_restart_sap(session->pContext);
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return status;
 	default:
 		sms_log(mac_ctx, LOGE, FL("LFR3: callback reason %d"), reason);
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return QDF_STATUS_E_FAILURE;
 	}
 	session->roam_synch_in_progress = true;
 	session->roam_synch_data = roam_synch_data;
-	if (!QDF_IS_STATUS_SUCCESS(csr_get_parsed_bss_description_ies(mac_ctx,
-			bss_desc, &ies_local))) {
+	status = csr_get_parsed_bss_description_ies(
+			mac_ctx, bss_desc, &ies_local);
+	if (!QDF_IS_STATUS_SUCCESS(status)) {
 		sms_log(mac_ctx, LOGE, FL("LFR3: fail to parse IEs"));
 		session->roam_synch_in_progress = false;
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return status;
 	}
 	conn_profile = &session->connectedProfile;
 	csr_roam_stop_network(mac_ctx, session_id,
@@ -20162,7 +20168,7 @@ void csr_roam_synch_callback(tpAniSirGlobal mac_ctx,
 		session->roam_synch_in_progress = false;
 		qdf_mem_free(ies_local);
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return QDF_STATUS_E_NOMEM;
 	}
 	csr_scan_save_roam_offload_ap_to_scan_cache(mac_ctx, roam_synch_data,
 			bss_desc);
@@ -20236,7 +20242,7 @@ void csr_roam_synch_callback(tpAniSirGlobal mac_ctx,
 			qdf_mem_free(roam_info);
 		qdf_mem_free(ies_local);
 		sme_release_global_lock(&mac_ctx->sme);
-		return;
+		return QDF_STATUS_E_NOMEM;
 	}
 	qdf_mem_copy(roam_info->pbFrames,
 			(uint8_t *)roam_synch_data +
@@ -20376,5 +20382,7 @@ void csr_roam_synch_callback(tpAniSirGlobal mac_ctx,
 	qdf_mem_free(roam_info);
 	qdf_mem_free(ies_local);
 	sme_release_global_lock(&mac_ctx->sme);
+
+	return status;
 }
 #endif

core/wma/inc/wma.h

@@ -1537,7 +1537,7 @@ typedef struct {
 	 * the serialized MC thread context with a timer.
 	 */
 	qdf_mc_timer_t service_ready_ext_timer;
-	void (*csr_roam_synch_cb)(tpAniSirGlobal mac,
+	QDF_STATUS (*csr_roam_synch_cb)(tpAniSirGlobal mac,
 		roam_offload_synch_ind *roam_synch_data,
 		tpSirBssDescription  bss_desc_ptr,
 		enum sir_roam_op_code reason);

core/wma/inc/wma_types.h

@@ -739,7 +739,7 @@ QDF_STATUS wma_register_mgmt_frm_client(void);
 QDF_STATUS wma_de_register_mgmt_frm_client(void);
 #ifdef WLAN_FEATURE_ROAM_OFFLOAD
 QDF_STATUS wma_register_roaming_callbacks(void *cds_ctx,
-		void (*csr_roam_synch_cb)(tpAniSirGlobal mac,
+		QDF_STATUS (*csr_roam_synch_cb)(tpAniSirGlobal mac,
 			roam_offload_synch_ind *roam_synch_data,
 			tpSirBssDescription  bss_desc_ptr,
 			enum sir_roam_op_code reason),
@@ -748,7 +748,7 @@ QDF_STATUS wma_register_roaming_callbacks(void *cds_ctx,
 			tpSirBssDescription  bss_desc_ptr));
 #else
 static inline QDF_STATUS wma_register_roaming_callbacks(void *cds_ctx,
-		void (*csr_roam_synch_cb)(tpAniSirGlobal mac,
+		QDF_STATUS (*csr_roam_synch_cb)(tpAniSirGlobal mac,
 			roam_offload_synch_ind *roam_synch_data,
 			tpSirBssDescription  bss_desc_ptr,
 			enum sir_roam_op_code reason),

core/wma/src/wma_mgmt.c

@@ -3587,7 +3587,7 @@ QDF_STATUS wma_de_register_mgmt_frm_client(void)
  * Return: Success or Failure Status
  */
 QDF_STATUS wma_register_roaming_callbacks(void *cds_ctx,
-	void (*csr_roam_synch_cb)(tpAniSirGlobal mac,
+	QDF_STATUS (*csr_roam_synch_cb)(tpAniSirGlobal mac,
 		roam_offload_synch_ind *roam_synch_data,
 		tpSirBssDescription  bss_desc_ptr,
 		enum sir_roam_op_code reason),

core/wma/src/wma_scan_roam.c

@@ -2133,9 +2133,9 @@ void wma_process_roam_synch_fail(WMA_HANDLE handle,
  * parameters are parsed and filled into the roam synch indication
  * buffer which will be used at different layers for propagation.
  *
- * Return: None
+ * Return: Success or Failure
  */
-static void wma_fill_roam_synch_buffer(tp_wma_handle wma,
+static QDF_STATUS wma_fill_roam_synch_buffer(tp_wma_handle wma,
 				roam_offload_synch_ind *roam_synch_ind_ptr,
 				WMI_ROAM_SYNCH_EVENTID_param_tlvs *param_buf)
 {
@@ -2145,6 +2145,7 @@ static void wma_fill_roam_synch_buffer(tp_wma_handle wma,
 	uint8_t *reassoc_req_ptr;
 	wmi_channel *chan;
 	wmi_key_material *key;
+	QDF_STATUS status = QDF_STATUS_SUCCESS;
 
 	synch_event = param_buf->fixed_param;
 	roam_synch_ind_ptr->roamedVdevId = synch_event->vdev_id;
@@ -2163,8 +2164,12 @@ static void wma_fill_roam_synch_buffer(tp_wma_handle wma,
 		roam_synch_ind_ptr->rssi,
 		roam_synch_ind_ptr->isBeacon);
 
-	wma->csr_roam_synch_cb((tpAniSirGlobal)wma->mac_context,
-		roam_synch_ind_ptr, NULL, SIR_ROAMING_DEREGISTER_STA);
+	if (!QDF_IS_STATUS_SUCCESS(
+		wma->csr_roam_synch_cb((tpAniSirGlobal)wma->mac_context,
+		roam_synch_ind_ptr, NULL, SIR_ROAMING_DEREGISTER_STA))) {
+		WMA_LOGE("LFR3: CSR Roam synch cb failed");
+		return QDF_STATUS_E_FAILURE;
+	}
 	/* Beacon/Probe Rsp data */
 	roam_synch_ind_ptr->beaconProbeRespOffset =
 		sizeof(roam_offload_synch_ind);
@@ -2223,6 +2228,8 @@ static void wma_fill_roam_synch_buffer(tp_wma_handle wma,
 		    &roam_synch_ind_ptr->hw_mode_trans_ind);
 	else
 		WMA_LOGD(FL("hw_mode transition fixed param is NULL"));
+
+	return status;
 }
 
 /**
@@ -2357,7 +2364,9 @@ int wma_roam_synch_event_handler(void *handle, uint8_t *event,
 		goto cleanup_label;
 	}
 	qdf_mem_zero(roam_synch_ind_ptr, len);
-	wma_fill_roam_synch_buffer(wma, roam_synch_ind_ptr, param_buf);
+	status = wma_fill_roam_synch_buffer(wma, roam_synch_ind_ptr, param_buf);
+	if (!QDF_IS_STATUS_SUCCESS(status))
+		goto cleanup_label;
 	/* 24 byte MAC header and 12 byte to ssid IE */
 	if (roam_synch_ind_ptr->beaconProbeRespLength >
 			(SIR_MAC_HDR_LEN_3A + SIR_MAC_B_PR_SSID_OFFSET)) {