+
+ /*
+ * Allows a transport to override the default error handler.
+ */
+ void (* eh_strategy_handler)(struct Scsi_Host *);
+
+ /*
+ * This is an optional routine that allows the transport to become
+ * involved when a scsi io timer fires. The return value tells the
+ * timer routine how to finish the io timeout handling:
+ * EH_HANDLED: I fixed the error, please complete the command
+ * EH_RESET_TIMER: I need more time, reset the timer and
+ * begin counting again
+ * EH_NOT_HANDLED Begin normal error recovery
+ */
+ enum scsi_eh_timer_return (* eh_timed_out)(struct scsi_cmnd *);
+
+ /*
+ * Used as callback for the completion of i_t_nexus request
+ * for target drivers.
+ */
+ int (* it_nexus_response)(struct Scsi_Host *, u64, int);
+
+ /*
+ * Used as callback for the completion of task management
+ * request for target drivers.
+ */
+ int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);