framework/csimaanger: fix/Improve error handling and resource management

This commit enhances the Channel State Information (CSI) framework with improved error handling, resource management, and robustness:

- Renamed CSIFW_INVALID_RAWDATA to CSIFW_ERROR_DATA_NOT_AVAILABLE for clearer error reporting
- Fixed logic error in add_service function for proper buffer management
- Implemented timeout handling in message queue operations to prevent indefinite blocking
- Added consecutive failure detection mechanism to prevent system lockups
- Improved resource management with proper pthread attribute cleanup
- Added configurable timeout option for CSI data collection
- Fixed preprocessor directive logic for custom device path configuration
- Enhanced error reporting with more descriptive messages and callback notifications

Author: rajat-samsung

framework/include/csimanager/csifw_api.h

@@ -32,7 +32,7 @@ typedef enum _CSIFW_RES {
 	CSIFW_ERROR_ALREADY_INIT_WITH_DIFFERENT_CONFIG = -8,	/* ERROR: Service already initialized with different CSI_Configuration  */
 	CSIFW_ERROR_SERVICE_NOT_REGISTERED = -7,		/* ERROR: Service not registered. Cannot start/stop/deinit */
 	CSIFW_ERROR_WIFI_DIS_CONNECTED = -6,			/* ERROR: WIFI WIFI_DISCONNECTED */
-	CSIFW_INVALID_RAWDATA = -5,				/* Invalid Raw Data */
+	CSIFW_ERROR_DATA_NOT_AVAILABLE = -5,                    /* ERROR: CSI Data Not Available */
 	CSIFW_INVALID_ARG = -4,					/* Invalid argument */
 	CSIFW_NOT_ENOUGH_SPACE = -3,				/* read/write/other buffer has empty space less than required size */
 	CSIFW_NO_MEM = -2,					/* Memory allocation (malloc/calloc) failed */

framework/src/csimanager/CSIManager.c

@@ -563,7 +563,7 @@ csifw_service_info_t *add_service(csifw_context_t *p_csifw_ctx, service_callback
   }
 
   if (get_service_idx(cid) != -1) {
-    if (!p_csifw_ctx->parsed_buffptr) {
+    if (p_csifw_ctx->parsed_buffptr) {
       free(p_csifw_ctx->parsed_buffptr);
       p_csifw_ctx->parsed_buffptr = NULL;
     }

framework/src/csimanager/CSIPacketReceiver.c

@@ -25,6 +25,7 @@
 #include <tinyara/wifi_csi/wifi_csi.h>
 
 #define RCVR_TH_NAME "csifw_data_receiver_th"
+#define MAX_CONSECUTIVE_FAILURES 50
 
 static inline CSIFW_RES open_driver(int *fd) {
   *fd = open(CONFIG_WIFICSI_CUSTOM_DEV_PATH, O_RDONLY);
@@ -69,15 +70,19 @@ static void *dataReceiverThread(void *vargp)
 	size_t size;
 	int csi_data_len = 0;
 	struct wifi_csi_msg_s msg;
+	int consecutive_failures = 0;
 	int fd = p_csifw_ctx->data_receiver_fd;
 	mqd_t mq_handle = p_csifw_ctx->mq_handle;
 	unsigned char *get_data_buffptr = p_csifw_ctx->get_data_buffptr;
+	struct timespec st_time = {0,};
+	int timeout_count = 0;
 
 	while (!p_csifw_ctx->data_receiver_thread_stop) {
-		size = mq_receive(mq_handle, (char *)&msg, sizeof(msg), &prio);
-		if (size != sizeof(msg)) {
-			CSIFW_LOGE("Interrupted while waiting for deque message from kernel %zu, errno: %d (%s)", size, get_errno(), strerror(get_errno()));
-		} else {
+		clock_gettime(CLOCK_REALTIME, &st_time);
+		st_time.tv_sec += 1;
+		size = mq_timedreceive(mq_handle, (char *)&msg, sizeof(msg), &prio, &st_time);
+		if (size >= 0) {
+			CSIFW_LOGD("Message received - msgId: %d, data_len: %d, size: %zu: %d", msg.msgId, msg.data_len, size);
 			switch (msg.msgId) {
 			case CSI_MSG_DATA_READY_CB:
 				if (msg.data_len == 0 || msg.data_len > CSIFW_MAX_RAW_BUFF_LEN) {
@@ -87,12 +92,20 @@ static void *dataReceiverThread(void *vargp)
 				csi_data_len = msg.data_len;
 				len = readCSIData(fd, get_data_buffptr, csi_data_len);
 				if (len < 0) {
+					consecutive_failures++;
 					CSIFW_LOGE("Skipping packet: error: %d", len);
+					if (consecutive_failures >= MAX_CONSECUTIVE_FAILURES) {
+						CSIFW_LOGE("CRITICAL: %d consecutive readCSIData failures detected!", consecutive_failures);
+						p_csifw_ctx->CSI_DataCallback(CSIFW_ERROR_DATA_NOT_AVAILABLE, 0, NULL, 0);
+						break;
+					}
 					continue;
 				}
 				if (len != csi_data_len - CSIFW_CSI_HEADER_LEN) {
 					csi_data_len = len + CSIFW_CSI_HEADER_LEN;
 				}
+				consecutive_failures = 0;
+				timeout_count = 0;
 				p_csifw_ctx->CSI_DataCallback(CSIFW_OK, csi_data_len, get_data_buffptr, len);
 				break;
 
@@ -104,6 +117,26 @@ static void *dataReceiverThread(void *vargp)
 				CSIFW_LOGE("Received unknown message ID: %d", msg.msgId);
 				break;
 			}
+		} else if (size == -1) {
+			if (errno == ETIMEDOUT) {
+				timeout_count++;
+				if (timeout_count >= CONFIG_CSI_DATA_TIMEOUT_SEC) {
+					 CSIFW_LOGE("Message receive timeout - no data available for [%d] seconds [msg size: %zu, errno: %d (%s)]", 
+						(p_csifw_ctx->data_receiver_thread_stop ? 1 : CONFIG_CSI_DATA_TIMEOUT_SEC), size, errno, strerror(errno));
+					consecutive_failures = 0;
+					timeout_count = 0;
+					p_csifw_ctx->CSI_DataCallback(CSIFW_ERROR_DATA_NOT_AVAILABLE, 0, NULL, 0);
+				}
+			} else {
+				CSIFW_LOGE("Message received size error - msgId: %d, data_len: %d, size: %zu, errno: %d (%s)", msg.msgId, msg.data_len, size, errno, strerror(errno));
+				consecutive_failures++;
+				if (consecutive_failures >= MAX_CONSECUTIVE_FAILURES) {
+					CSIFW_LOGE("CRITICAL: %d consecutive Message received size error", consecutive_failures);
+					consecutive_failures = 0;
+					timeout_count = 0;
+					p_csifw_ctx->CSI_DataCallback(CSIFW_ERROR, 0, NULL, 0);
+				}
+			}
 		}
 	}
 	CSIFW_LOGD("[THREAD] : EXIT");
@@ -207,15 +240,7 @@ CSIFW_RES csi_packet_receiver_start_collect(void)
 		CSIFW_LOGE("Invalid context pointer (NULL)");
 		return CSIFW_ERROR_NOT_INITIALIZED;
 	}
-	// allocate buffer for receiveing data from driver
-	if (!p_csifw_ctx->get_data_buffptr) {
-		p_csifw_ctx->get_data_buffptr = (unsigned char *)malloc(CSIFW_MAX_RAW_BUFF_LEN);
-		if (!p_csifw_ctx->get_data_buffptr) {
-			CSIFW_LOGE("Buffer allocation Fail.");
-			return CSIFW_ERROR;
-		}
-		CSIFW_LOGD("Get data buffer allocation done, size: %d", CSIFW_MAX_RAW_BUFF_LEN);
-	}
+
 	if (p_csifw_ctx->disable_required) {
 		CSIFW_LOGD("WiFi reconnected: Disabling CSI config");
 		csi_packet_receiver_set_csi_config(CSI_CONFIG_ENABLE);
@@ -229,6 +254,17 @@ CSIFW_RES csi_packet_receiver_start_collect(void)
 	}
 	p_csifw_ctx->data_receiver_thread_stop = false;
 
+	// allocate buffer for receiveing data from driver
+	if (!p_csifw_ctx->get_data_buffptr) {
+		p_csifw_ctx->get_data_buffptr = (unsigned char *)malloc(CSIFW_MAX_RAW_BUFF_LEN);
+		if (!p_csifw_ctx->get_data_buffptr) {
+			csi_packet_receiver_set_csi_config(CSI_CONFIG_DISABLE);
+			CSIFW_LOGE("Buffer allocation Fail.");
+			return CSIFW_ERROR;
+		}
+		CSIFW_LOGD("Get data buffer allocation done, size: %d", CSIFW_MAX_RAW_BUFF_LEN);
+	}
+
 	pthread_attr_t recv_th_attr;
 	if (pthread_attr_init(&recv_th_attr) != 0) {
 		CSIFW_LOGE("Failed to initialize receiver thread attributes - errno: %d (%s)", get_errno(), strerror(get_errno()));
@@ -245,11 +281,16 @@ CSIFW_RES csi_packet_receiver_start_collect(void)
 		csi_packet_receiver_set_csi_config(CSI_CONFIG_DISABLE);
 		free(p_csifw_ctx->get_data_buffptr);
 		p_csifw_ctx->get_data_buffptr = NULL;
+		pthread_attr_destroy(&recv_th_attr);
 		return CSIFW_ERROR;
 	}
 	if (pthread_setname_np(p_csifw_ctx->csi_data_receiver_th, RCVR_TH_NAME) != 0) {
 		CSIFW_LOGE("Failed to set receiver thread name - errno: %d (%s)", get_errno(), strerror(get_errno()));
 	}
+	if (pthread_attr_destroy(&recv_th_attr) != 0) {
+		CSIFW_LOGE("Failed to destroy thread attr - errno: %d (%s)", get_errno(), strerror(get_errno()));
+	}
+
 	CSIFW_LOGD("CSI Data_Receive_Thread created (thread ID: %lu)", (unsigned long)p_csifw_ctx->csi_data_receiver_th);
 	return res;
 }
@@ -334,7 +375,17 @@ CSIFW_RES csi_packet_receiver_stop_collect(void)
 		CSIFW_LOGD("Sending dummy message to close blocking mq");
 		struct wifi_csi_msg_s msg;
 		msg.msgId = CSI_MSG_ERROR;
-		mq_send(p_csifw_ctx->mq_handle, (FAR const char *)&msg, sizeof(msg), MQ_PRIO_MAX);
+		struct timespec timeout;
+		clock_gettime(CLOCK_REALTIME, &timeout);
+		timeout.tv_sec += 1;
+		int mq_send_ret = mq_timedsend(p_csifw_ctx->mq_handle, (FAR const char *)&msg, sizeof(msg), MQ_PRIO_MAX, &timeout);
+		if (mq_send_ret != 0) {
+			if (errno == ETIMEDOUT) {
+				CSIFW_LOGE("Timeout sending dummy message - message queue may be full");
+			} else {
+        		CSIFW_LOGE("Failed to send dummy message - errno: %d (%s)", errno, strerror(errno));
+			}
+		} 
 	} else {
 		CSIFW_LOGE("Failed to close blocking mq as MQ_Discriptor is Invalid");
 	}

framework/src/csimanager/Kconfig

@@ -13,6 +13,12 @@ config CSIFW
 
 if CSIFW
 
+config CSI_DATA_TIMEOUT_SEC
+	int "CSI DATA TIMEOUT"
+	default 15
+	---help---
+		CSI DATA TIMEOUT
+
 menu "CSIFW Debug Logs"
 
 config CSIFW_LOGS

os/drivers/wifi_csi/wifi_csi.c

@@ -535,8 +535,9 @@ int wifi_csi_register(FAR const char *name, FAR struct wifi_csi_lowerhalf_s *dev
 	char* path;
 #ifndef CONFIG_WIFICSI_CUSTOM_DEV_PATH
 	path = "/dev/wificsi";
-#endif
+#else
 	path = CONFIG_WIFICSI_CUSTOM_DEV_PATH;
+#endif
 
 	/* Allocate the upper-half data structure */
 	upper = (FAR struct wifi_csi_upperhalf_s *)kmm_zalloc(sizeof(struct wifi_csi_upperhalf_s));