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| author | Steffen Maier <maier@linux.vnet.ibm.com> | 2017-07-28 13:31:01 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-08-11 02:37:00 +0300 |
| commit | df00d7b8d5533a35d03e97b7804e8fa3157831a0 (patch) | |
| tree | 135117b28b0aa808cafa5c92ae68275063b14792 /drivers/s390/scsi/zfcp_fsf.h | |
| parent | 394134fd9f999f3826b1d64d648f26e5288824d7 (diff) | |
| download | linux-df00d7b8d5533a35d03e97b7804e8fa3157831a0.tar.xz | |
scsi: zfcp: use common code fcp_cmnd and fcp_resp with union in fsf_qtcb_bottom_io
This eases crash dump analysis by automatically dissecting these
protocol headers at least somewhat rather than getting a string
interpretation of large unstructured character array buffer fields.
Also, we can get rid of some unnecessary and error-prone type casts.
This change is possible since v2.6.33 commit 4318e08c84e4
("[SCSI] zfcp: Update FCP protocol related code").
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/s390/scsi/zfcp_fsf.h')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h index ea3c76ac0de1..88feba5bfda4 100644 --- a/drivers/s390/scsi/zfcp_fsf.h +++ b/drivers/s390/scsi/zfcp_fsf.h @@ -3,7 +3,7 @@ * * Interface to the FSF support functions. * - * Copyright IBM Corp. 2002, 2016 + * Copyright IBM Corp. 2002, 2017 */ #ifndef FSF_H @@ -312,8 +312,14 @@ struct fsf_qtcb_bottom_io { u32 data_block_length; u32 prot_data_length; u8 res2[4]; - u8 fcp_cmnd[FSF_FCP_CMND_SIZE]; - u8 fcp_rsp[FSF_FCP_RSP_SIZE]; + union { + u8 byte[FSF_FCP_CMND_SIZE]; + struct fcp_cmnd iu; + } fcp_cmnd; + union { + u8 byte[FSF_FCP_RSP_SIZE]; + struct fcp_resp_with_ext iu; + } fcp_rsp; u8 res3[64]; } __attribute__ ((packed)); |