[libsas PATCH v10 5/9] libsas: add sas_eh_abort_handler
From: Dan Williams <hidden>
Date: 2012-03-11 04:24:05
Also in:
linux-scsi
Subsystem:
scsi libsas subsystem, scsi subsystem, the rest · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
When recovering failed eh-cmnds let the lldd attempt an abort via scsi_abort_eh_cmnd before escalating. Acked-by: Jacek Danecki <redacted> Signed-off-by: Dan Williams <redacted> --- drivers/scsi/libsas/sas_scsi_host.c | 21 +++++++++++++++++++++ include/scsi/libsas.h | 1 + 2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 50a18a6..dec992b 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c@@ -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) {
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 1b14d80..45f9534 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h@@ -718,6 +718,7 @@ 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);