diff options
| author | Felix Beck <felix.beck@de.ibm.com> | 2010-07-16 15:37:42 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-28 09:48:56 -0500 |
| commit | ef3eb71d8ba4fd9d48c5f9310bc9d90ca00323b4 (patch) | |
| tree | 9903cbae6c03184687c51b4be926572913cda93f /drivers/s390/scsi/zfcp_qdio.h | |
| parent | dcc18f48a2f1a44c5e8848f30d0cf53a8066c62a (diff) | |
[SCSI] zfcp: Introduce experimental support for DIF/DIX
Introduce support for DIF/DIX in zfcp: Report the capabilities for the
Scsi_host, map the protection data when issuing I/O requests and
handle the new error codes. Also add the fsf data_direction field to
the hba trace, it is useful information for debugging in that area.
This is an EXPERIMENTAL feature for now.
Signed-off-by: Felix Beck <felix.beck@de.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_qdio.h')
| -rw-r--r-- | drivers/s390/scsi/zfcp_qdio.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_qdio.h b/drivers/s390/scsi/zfcp_qdio.h index 10d0df99dbf..2297d8d3e94 100644 --- a/drivers/s390/scsi/zfcp_qdio.h +++ b/drivers/s390/scsi/zfcp_qdio.h @@ -215,4 +215,20 @@ void zfcp_qdio_sbal_limit(struct zfcp_qdio *qdio, QDIO_MAX_BUFFERS_PER_Q; } +/** + * zfcp_qdio_set_data_div - set data division count + * @qdio: pointer to struct zfcp_qdio + * @q_req: The current zfcp_qdio_req + * @count: The data division count + */ +static inline +void zfcp_qdio_set_data_div(struct zfcp_qdio *qdio, + struct zfcp_qdio_req *q_req, u32 count) +{ + struct qdio_buffer_element *sbale; + + sbale = &qdio->req_q[q_req->sbal_first]->element[0]; + sbale->length = count; +} + #endif /* ZFCP_QDIO_H */ |