Content-type: text/html Man page of scsi_transport

scsi_transport

Section: Kernel Functions for Drivers (9F)
Updated: 16 Jan 2006
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NAME

scsi_transport - request by a SCSI target driver to start a command  

SYNOPSIS

#include <sys/scsi/scsi.h> 

int scsi_transport(struct scsi_pkt *pkt);  

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).  

PARAMETERS

pkt Pointer to a scsi_pkt(9S) structure.

 

DESCRIPTION

Target drivers use scsi_transport() to request the host adapter driver to transport a command to the SCSI target device specified by pkt. The target driver must obtain resources for the packet using scsi_init_pkt(9F) prior to calling this function. The packet may be initialized using one of the makecom(9F) functions. scsi_transport() does not wait for the SCSI command to complete. See scsi_poll(9F) for a description of polled SCSI commands. Upon completion of the SCSI command the host adapter calls the completion routine provided by the target driver in the pkt_comp member of the scsi_pkt pointed to by pkt.  

RETURN VALUES

The scsi_transport() function returns:

TRAN_ACCEPT The packet was accepted by the transport layer.

TRAN_BUSY The packet could not be accepted because there was already a packet in progress for this target/lun, the host adapter queue was full, or the target device queue was full.

TRAN_BADPKT The DMA count in the packet exceeded the DMA engine's maximum DMA size.

TRAN_FATAL_ERROR A fatal error has occurred in the transport layer.

 

CONTEXT

The scsi_transport() function can be called from user, interrupt, or kernel context.  

EXAMPLES

Example 1: Using scsi_transport()

if ((status = scsi_transport(rqpkt)) != TRAN_ACCEPT) {
      scsi_log(devp, sd_label, CE_WARN,
          "transport of request sense pkt fails (0x%x)\n", status);
}

 

SEE ALSO

tran_start(9E), makecom(9F), scsi_init_pkt(9F), scsi_pktalloc(9F), scsi_poll(9F), scsi_pkt(9S)

Writing Device Drivers


 

Index

NAME
SYNOPSIS
INTERFACE LEVEL
PARAMETERS
DESCRIPTION
RETURN VALUES
CONTEXT
EXAMPLES
SEE ALSO

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Time: 02:39:44 GMT, October 02, 2010