TRAN_ABORT(9E) Driver Entry Points TRAN_ABORT(9E)


NAME


tran_abort - abort a SCSI command

SYNOPSIS


#include <sys/scsi/scsi.h>


int prefixtran_abort(struct scsi_address *ap,
struct scsi_pkt *pkt);


INTERFACE LEVEL


Solaris architecture specific (Solaris DDI).

ARGUMENTS


ap
Pointer to a scsi_address(9S) structure.


pkt
Pointer to a scsi_pkt(9S) structure.


DESCRIPTION


The tran_abort() vector in the scsi_hba_tran(9S) structure must be
initialized during the HBA driver's attach(9E) to point to an HBA entry
point to be called when a target driver calls scsi_abort(9F).


tran_abort() should attempt to abort the command pkt that has been
transported to the HBA. If pkt is NULL, the HBA driver should attempt to
abort all outstanding packets for the target/logical unit addressed by
ap.


Depending on the state of a particular command in the transport layer,
the HBA driver may not be able to abort the command.


While the abort is taking place, packets issued to the transported layer
may or may not be aborted.


For each packet successfully aborted, tran_abort() must set the
pkt_reason to CMD_ABORTED, and pkt_statistics must be OR'ed with
STAT_ABORTED .

RETURN VALUES


tran_abort() must return:

1
upon success or partial success.


0
upon failure.


CONTEXT


The tran_abort() function can be called from user or interrupt context.
This requirement comes from scsi_abort().

SEE ALSO


attach(9E), scsi_abort(9F), scsi_hba_attach(9F), scsi_address(9S),
scsi_hba_tran(9S), scsi_pkt(9S)


Writing Device Drivers

NOTES


If pkt_reason already indicates that an earlier error had occurred,
tran_abort() should not overwrite pkt_reason with CMD_ABORTED.


August 17, 2005 TRAN_ABORT(9E)