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| author | Christoph Hellwig <hch@infradead.org> | 2012-05-20 11:59:14 -0400 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-07-16 17:25:56 -0700 |
| commit | d6e0175cf3f9737a760482d185bb73566bcc9331 (patch) | |
| tree | 99ca8361ebc8c4e83f8335193963faa3f30007b5 /include/target | |
| parent | 88455ec4be02c395820b1ff57656b0844ec03ac3 (diff) | |
| download | lwn-d6e0175cf3f9737a760482d185bb73566bcc9331.tar.gz lwn-d6e0175cf3f9737a760482d185bb73566bcc9331.zip | |
target: add a parse_cdb method to the backend drivers
Instead of trying to handle all SCSI command sets in one function
(transport_generic_cmd_sequencer) call out to the backend driver to perform
this functionality. For pSCSI a copy of the existing code is used, but for
all virtual backends we can use a new parse_sbc_cdb helper is used to
provide a simple SBC emulation.
For now this setups means a fair amount of duplication between pSCSI and the
SBC library, but patches later in this series will sort out that problem.
(nab: Fix up build failure in target_core_pscsi.c)
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
| -rw-r--r-- | include/target/target_core_backend.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h index 2d7db85e93ae..f4f1eef6bf55 100644 --- a/include/target/target_core_backend.h +++ b/include/target/target_core_backend.h @@ -24,6 +24,8 @@ struct se_subsystem_api { struct se_subsystem_dev *, void *); void (*free_device)(void *); int (*transport_complete)(struct se_cmd *cmd, struct scatterlist *); + + int (*parse_cdb)(struct se_cmd *cmd, unsigned int *size); int (*execute_cmd)(struct se_cmd *, struct scatterlist *, u32, enum dma_data_direction); int (*do_discard)(struct se_device *, sector_t, u32); @@ -49,6 +51,9 @@ struct se_device *transport_add_device_to_core_hba(struct se_hba *, void target_complete_cmd(struct se_cmd *, u8); +int sbc_parse_cdb(struct se_cmd *cmd, unsigned int *size); +int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size, bool passthrough); + void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *); int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *); int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *); |