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[SCSI] libsas: add sas_eh_abort_handler 

When recovering failed eh-cmnds let the lldd attempt an abort via
scsi_abort_eh_cmnd before escalating.

Reviewed-by: Jacek Danecki <jacek.danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Dan Williams 2012-06-21 23:30:53 -07:00 committed by James Bottomley
parent 5db45bdc87
commit 9524c68218
2 changed files with 22 additions and 0 deletions
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21
drivers/scsi/libsas/sas_scsi_host.c
View File

@ -531,6 +531,27 @@ static int sas_queue_reset(struct domain_device *dev, int reset_type, int lun, i
return FAILED;
}
int sas_eh_abort_handler(struct scsi_cmnd *cmd)
{
int res;
struct sas_task *task = TO_SAS_TASK(cmd);
struct Scsi_Host *host = cmd->device->host;
struct sas_internal *i = to_sas_internal(host->transportt);
if (current != host->ehandler)
return FAILED;
if (!i->dft->lldd_abort_task)
return FAILED;
res = i->dft->lldd_abort_task(task);
if (res == TMF_RESP_FUNC_SUCC || res == TMF_RESP_FUNC_COMPLETE)
return SUCCESS;
return FAILED;
}
EXPORT_SYMBOL_GPL(sas_eh_abort_handler);
/* Attempt to send a LUN reset message to a device */
int sas_eh_device_reset_handler(struct scsi_cmnd *cmd)
{

1
include/scsi/libsas.h
View File

@ -720,6 +720,7 @@ void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *);
void sas_init_dev(struct domain_device *);
void sas_task_abort(struct sas_task *);
int sas_eh_abort_handler(struct scsi_cmnd *cmd);
int sas_eh_device_reset_handler(struct scsi_cmnd *cmd);
int sas_eh_bus_reset_handler(struct scsi_cmnd *cmd);