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| author | Boaz Harrosh <bharrosh@panasas.com> | 2008-04-18 10:11:51 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-04-18 11:51:19 -0500 |
| commit | 38d1c069db8c87eb6cb10ca1ede9d9b673531ddd (patch) | |
| tree | b5e823e2225620f0db342e70e107831e505b9276 /include/scsi/iscsi_proto.h | |
| parent | 57b7658aed76f1763416878ead9be4ffa288b7a3 (diff) | |
| download | lwn-38d1c069db8c87eb6cb10ca1ede9d9b673531ddd.tar.gz lwn-38d1c069db8c87eb6cb10ca1ede9d9b673531ddd.zip | |
[SCSI] iscsi: extended cdb support
Support for extended CDBs in iscsi.
All we need is to check if command spills over 16 bytes then allocate
an iscsi-extended-header for the leftovers.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Reviewed-by: Pete Wyckoff <pw@osc.edu>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include/scsi/iscsi_proto.h')
| -rw-r--r-- | include/scsi/iscsi_proto.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h index 5ffec8ad6964..e0593bfae622 100644 --- a/include/scsi/iscsi_proto.h +++ b/include/scsi/iscsi_proto.h @@ -112,6 +112,7 @@ struct iscsi_ahs_hdr { #define ISCSI_AHSTYPE_CDB 1 #define ISCSI_AHSTYPE_RLENGTH 2 +#define ISCSI_CDB_SIZE 16 /* iSCSI PDU Header */ struct iscsi_cmd { @@ -125,7 +126,7 @@ struct iscsi_cmd { __be32 data_length; __be32 cmdsn; __be32 exp_statsn; - uint8_t cdb[16]; /* SCSI Command Block */ + uint8_t cdb[ISCSI_CDB_SIZE]; /* SCSI Command Block */ /* Additional Data (Command Dependent) */ }; @@ -154,7 +155,8 @@ struct iscsi_ecdb_ahdr { __be16 ahslength; /* CDB length - 15, including reserved byte */ uint8_t ahstype; uint8_t reserved; - uint8_t ecdb[260 - 16]; /* 4-byte aligned extended CDB spillover */ + /* 4-byte aligned extended CDB spillover */ + uint8_t ecdb[260 - ISCSI_CDB_SIZE]; }; /* SCSI Response Header */ |