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target: add struct spc_ops + initial ->execute_rw pointer usage

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Remove the execute_cmd method in struct se_subsystem_api, and always use the
one directly in struct se_cmd.  To make life simpler for SBC virtual backends
a struct spc_ops that is passed to sbc_parse_cmd is added.  For now it
only contains an execute_rw member, but more will follow with the subsequent
commits.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig
2012-06-17 18:40:52 -04:00
committed by Nicholas Bellinger
parent e1306bdab3
commit 0c2ad7d113
7 changed files with 66 additions and 25 deletions
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8
include/target/target_core_backend.h
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@@ -26,8 +26,6 @@ struct se_subsystem_api {
int (*transport_complete)(struct se_cmd *cmd, struct scatterlist *);
int (*parse_cdb)(struct se_cmd *cmd);
int (*execute_cmd)(struct se_cmd *, struct scatterlist *, u32,
enum dma_data_direction);
int (*do_discard)(struct se_device *, sector_t, u32);
void (*do_sync_cache)(struct se_cmd *);
ssize_t (*check_configfs_dev_params)(struct se_hba *,
@@ -42,6 +40,10 @@ struct se_subsystem_api {
unsigned char *(*get_sense_buffer)(struct se_cmd *);
};
struct spc_ops {
int (*execute_rw)(struct se_cmd *cmd);
};
int transport_subsystem_register(struct se_subsystem_api *);
void transport_subsystem_release(struct se_subsystem_api *);
@@ -51,7 +53,7 @@ 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);
int sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops);
int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);