scsi_rsp_t Structure

The scsi_rsp_t structure provides the SCSI response and status information.

typedef struct scsi_rsp {
                uint8_t  rsp_tran_ret;    /* scsi_transport(9F) return value */
                uint8_t  rsp_reason;      /* value of pkt_reason */
                uint8_t  rsp_status;      /* SCSI Status */
                uint8_t  rsp_sense_key;   /* sense key */
                uint8_t  rsp_sense_asc;   /* ASC */
                uint8_t  rsp_sense_ascq;  /* ASCQ */
                size_t  rsp_resid;       /* number of bytes not transferred */
                uint64_t rsp_latency;     /* latency of the SCSI command in nanoseconds */
} scsi_rsp_t

The scsi:::cmd-response fires if one of the following conditions is true:

• When you receive a response from the target device.

• When the SCSI command fails to reach the target because of transport failure.

Values in the scsi_rsp_t structure provide details on the failure or success of the SCSI command.

The rsp_tran_ret member provides a return value of scsi_transport(). The return values denote if the SCSI command was accepted by the SCSI transport. Values other than TRAN_ACCEPT indicates that the SCSI command was not accepted and all other members of the structure scsi_rsp were not set.

The rsp_reason member denotes the SCSI command completion reason. The value of CMD_CMPLT is set for a normal completion when the command has reached the target. Then the SCSI status is set by using the rsp_status member. The value of the rsp_status is not set for any other values of rsp_reason. To know the value of TRAN_ACCEPT and CMD_CMPLT, see the scsi_pkt.h file. For more information, see scsi_pkt(9S).