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| author | Christof Schmitt <christof.schmitt@de.ibm.com> | 2010-07-16 15:37:43 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-28 09:48:58 -0500 |
| commit | 339f4f4eab80caa6cf0d39fb057ad6ddb84ba91e (patch) | |
| tree | 495dc5a18c128d3e802a8b1914f978bf4262ac3d /drivers/s390/scsi/zfcp_ext.h | |
| parent | ef3eb71d8ba4fd9d48c5f9310bc9d90ca00323b4 (diff) | |
| download | linux-339f4f4eab80caa6cf0d39fb057ad6ddb84ba91e.tar.bz2 | |
[SCSI] zfcp: Trigger logging in the FCP channel on qdio error conditions
Exploit the cio siosl function to trigger logging in the FCP channel
on qdio error conditions. Add a helper function in zfcp_qdio to ensure
that tracing is only triggered once before calling qdio_shutdown.
Trigger in zfcp for hardware logs are:
- timeout for FSF requests to the FCP channel
- "no recommendation" status from FCP channel
- invalid FSF protocol status
- stalled outbound queue
- unknown request id on inbound queue
- QDIO_ERROR_SLSB_STATE
All of the above triggers run from the Linux qdio softirq context, so
no additional synchronization is necessary for the handling of the
ZFCP_STATUS_ADAPTER_SIOSL_ISSUED flag.
Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/s390/scsi/zfcp_ext.h')
| -rw-r--r-- | drivers/s390/scsi/zfcp_ext.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index de0925f25dcc..3b93239c6f69 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -152,6 +152,7 @@ extern int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *, struct zfcp_qdio_req *, struct scatterlist *); extern int zfcp_qdio_open(struct zfcp_qdio *); extern void zfcp_qdio_close(struct zfcp_qdio *); +extern void zfcp_qdio_siosl(struct zfcp_adapter *); /* zfcp_scsi.c */ extern struct zfcp_data zfcp_data; |