qcacmn: Introduce QCA_NL80211_VENDOR_SUBCMD_HANG

Event indicating to the user space that the driver has detected an
internal failure. The driver is expected to recover from such a failure
automatically, e.g., by resetting the device.
This event carries the information indicating the reason that triggered
this detection.

Change-Id: Ia13e6f102e5e18ec4864ed258728369d51a77ff4
CRs-fixed: 2120886

os_if/linux/qca_vendor.h

@@ -228,6 +228,11 @@
  *     These scan parameters shall be reset by the driver/firmware once
  *     disconnected. The attributes used with this command are defined in
  *     enum qca_wlan_vendor_attr_active_tos.
+ * @QCA_NL80211_VENDOR_SUBCMD_HANG: Event indicating to the user space that the
+ *      driver has detected an internal failure. This event carries the
+ *      information indicating the reason that triggered this detection. The
+ *      attributes for this command are defined in
+ *      enum qca_wlan_vendor_attr_hang.
  */
 
 enum qca_nl80211_vendor_subcmds {
@@ -422,6 +427,7 @@ enum qca_nl80211_vendor_subcmds {
 	QCA_NL80211_VENDOR_SUBCMD_SPECTRAL_SCAN_START = 154,
 	QCA_NL80211_VENDOR_SUBCMD_SPECTRAL_SCAN_STOP = 155,
 	QCA_NL80211_VENDOR_SUBCMD_ACTIVE_TOS = 156,
+	QCA_NL80211_VENDOR_SUBCMD_HANG = 157,
 };
 
 enum qca_wlan_vendor_tos {
@@ -446,6 +452,54 @@ enum qca_wlan_vendor_attr_active_tos {
 	QCA_WLAN_VENDOR_ATTR_ACTIVE_TOS_MAX = 3,
 };
 
+enum qca_wlan_vendor_hang_reason {
+	/* Unspecified reason */
+	QCA_WLAN_HANG_REASON_UNSPECIFIED = 0,
+	/* No Map for the MAC entry for the received frame */
+	QCA_WLAN_HANG_RX_HASH_NO_ENTRY_FOUND = 1,
+	/* peer deletion timeout happened */
+	QCA_WLAN_HANG_PEER_DELETION_TIMEDOUT = 2,
+	/* peer unmap timeout */
+	QCA_WLAN_HANG_PEER_UNMAP_TIMEDOUT = 3,
+	/* Scan request timed out */
+	QCA_WLAN_HANG_SCAN_REQ_EXPIRED = 4,
+	/* Consecutive Scan attempt failures */
+	QCA_WLAN_HANG_SCAN_ATTEMPT_FAILURES = 5,
+	/* Unable to get the message buffer */
+	QCA_WLAN_HANG_GET_MSG_BUFF_FAILURE = 6,
+	/* Current command processing is timedout */
+	QCA_WLAN_HANG_ACTIVE_LIST_TIMEOUT = 7,
+	/* Timeout for an ACK from FW for suspend request */
+	QCA_WLAN_HANG_SUSPEND_TIMEOUT = 8,
+	/* Timeout for an ACK from FW for resume request */
+	QCA_WLAN_HANG_RESUME_TIMEOUT = 9,
+	/* Transmission timeout for consecutive data frames */
+	QCA_WLAN_HANG_TRANSMISSIONS_TIMEOUT = 10,
+	/* Timeout for the TX completion status of data frame */
+	QCA_WLAN_HANG_TX_COMPLETE_TIMEOUT = 11,
+	/* DXE failure for tx/Rx, DXE resource unavailability */
+	QCA_WLAN_HANG_DXE_FAILURE = 12,
+	/* WMI pending commands exceed the maximum count */
+	QCA_WLAN_HANG_WMI_EXCEED_MAX_PENDING_CMDS = 13,
+};
+
+/**
+ * enum qca_wlan_vendor_attr_hang - Used by the vendor command
+ * QCA_NL80211_VENDOR_SUBCMD_HANG.
+ */
+enum qca_wlan_vendor_attr_hang {
+	QCA_WLAN_VENDOR_ATTR_HANG_INVALID = 0,
+	/*
+	 * Reason for the Hang - Represented by enum
+	 * qca_wlan_vendor_hang_reason.
+	 */
+	QCA_WLAN_VENDOR_ATTR_HANG_REASON = 1,
+
+	QCA_WLAN_VENDOR_ATTR_HANG_AFTER_LAST,
+	QCA_WLAN_VENDOR_ATTR_HANG_MAX =
+		QCA_WLAN_VENDOR_ATTR_HANG_AFTER_LAST - 1,
+};
+
 /**
  * enum qca_vendor_attr_set_trace_level - Config params for QDF set trace level
  * @QCA_WLAN_VENDOR_ATTR_SET_TRACE_LEVEL_INVALID: Invalid trace level
@@ -711,6 +765,7 @@ enum qca_wlan_vendor_attr_get_station_info {
  * @QCA_NL80211_VENDOR_SUBCMD_SAP_CONDITIONAL_CHAN_SWITCH_INDEX: SAP
  *      conditional channel switch index
  * @QCA_NL80211_VENDOR_SUBCMD_NUD_STATS_GET_INDEX: NUD DEBUG Stats index
+ * @QCA_NL80211_VENDOR_SUBCMD_HANG_REASON_INDEX: hang event reason index
  */
 
 enum qca_nl80211_vendor_subcmds_index {
@@ -790,6 +845,7 @@ enum qca_nl80211_vendor_subcmds_index {
 	QCA_NL80211_VENDOR_SUBCMD_UPDATE_EXTERNAL_ACS_CONFIG,
 	QCA_NL80211_VENDOR_SUBCMD_PWR_SAVE_FAIL_DETECTED_INDEX,
 	QCA_NL80211_VENDOR_SUBCMD_NUD_STATS_GET_INDEX,
+	QCA_NL80211_VENDOR_SUBCMD_HANG_REASON_INDEX,
 };
 
 /**

qdf/inc/qdf_event.h

@@ -48,7 +48,7 @@ typedef __qdf_event_t qdf_event_t;
 /* Function declarations and documenation */
 
 #ifdef CONFIG_MCL
-typedef void (*qdf_self_recovery_callback)(void);
+typedef void (*qdf_self_recovery_callback)(enum qdf_hang_reason);
 #endif
 
 QDF_STATUS qdf_event_create(qdf_event_t *event);

qdf/inc/qdf_types.h

@@ -827,4 +827,30 @@ enum qdf_suspend_type {
 	QDF_RUNTIME_SUSPEND
 };
 
+/**
+ * enum qdf_hang_reason - host hang/ssr reason
+ * @CDS_REASON_UNSPECIFIED: Unspecified reason
+ * @CDS_RX_HASH_NO_ENTRY_FOUND: No Map for the MAC entry for the received frame
+ * @CDS_PEER_DELETION_TIMEDOUT: peer deletion timeout happened
+ * @CDS_PEER_UNMAP_TIMEDOUT: peer unmap timeout
+ * @CDS_SCAN_REQ_EXPIRED: Scan request timed out
+ * @CDS_SCAN_ATTEMPT_FAILURES: Consecutive Scan attempt failures
+ * @CDS_GET_MSG_BUFF_FAILURE: Unable to get the message buffer
+ * @CDS_ACTIVE_LIST_TIMEOUT: Current command processing is timedout
+ * @CDS_SUSPEND_TIMEOUT: Timeout for an ACK from FW for suspend request
+ * @CDS_RESUME_TIMEOUT: Timeout for an ACK from FW for resume request
+ */
+enum qdf_hang_reason {
+	QDF_REASON_UNSPECIFIED = 0,
+	QDF_RX_HASH_NO_ENTRY_FOUND = 1,
+	QDF_PEER_DELETION_TIMEDOUT = 2,
+	QDF_PEER_UNMAP_TIMEDOUT = 3,
+	QDF_SCAN_REQ_EXPIRED = 4,
+	QDF_SCAN_ATTEMPT_FAILURES = 5,
+	QDF_GET_MSG_BUFF_FAILURE = 6,
+	QDF_ACTIVE_LIST_TIMEOUT = 7,
+	QDF_SUSPEND_TIMEOUT = 8,
+	QDF_RESUME_TIMEOUT = 9,
+};
+
 #endif /* __QDF_TYPES_H */

qdf/linux/src/qdf_event.c

@@ -291,6 +291,6 @@ void qdf_trigger_self_recovery(void)
 			  "No self recovery callback registered %s", __func__);
 		return;
 	}
-	self_recovery_cb();
+	self_recovery_cb(QDF_REASON_UNSPECIFIED);
 }
 #endif

utils/logging/src/wlan_logging_sock_svc.c

@@ -730,7 +730,7 @@ static void send_flush_completion_to_user(uint8_t ring_id)
 	wlan_report_log_completion(is_fatal, indicator, reason_code, ring_id);
 
 	if (recovery_needed)
-		cds_trigger_recovery();
+		cds_trigger_recovery(QDF_REASON_UNSPECIFIED);
 }
 #endif