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authorChristoph Hellwig <hch@infradead.org>2012-05-20 19:59:14 +0400
committerNicholas Bellinger <nab@linux-iscsi.org>2012-07-17 04:25:56 +0400
commitd6e0175cf3f9737a760482d185bb73566bcc9331 (patch)
tree99ca8361ebc8c4e83f8335193963faa3f30007b5 /include/target
parent88455ec4be02c395820b1ff57656b0844ec03ac3 (diff)
downloadlinux-d6e0175cf3f9737a760482d185bb73566bcc9331.tar.xz
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.h5
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 *);