From 366e815ef199da797cab52566016e692442b5c60 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 20 May 2012 11:59:14 -0400 Subject: 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 Signed-off-by: Nicholas Bellinger --- include/target/target_core_backend.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') 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 *); -- cgit