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scsi: target: core: Remove target_submit_cmd_map_sgls()

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Convert target_submit_cmd() to do its own calls and then remove
target_submit_cmd_map_sgls() since no one uses it.

Link: https://lore.kernel.org/r/20210227170006.5077-15-michael.christie@oracle.com
Tested-by: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Mike Christie 2021-02-27 10:59:55 -06:00 committed by Martin K. Petersen
parent 47edc84f33
commit 0fa50a8b12
2 changed files with 19 additions and 65 deletions
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78
drivers/target/target_core_transport.c
View file

@ -1753,58 +1753,6 @@ void target_submit(struct se_cmd *se_cmd)
}
EXPORT_SYMBOL_GPL(target_submit);
/**
* target_submit_cmd_map_sgls - lookup unpacked lun and submit uninitialized
* se_cmd + use pre-allocated SGL memory.
*
* @se_cmd: command descriptor to submit
* @se_sess: associated se_sess for endpoint
* @cdb: pointer to SCSI CDB
* @sense: pointer to SCSI sense buffer
* @unpacked_lun: unpacked LUN to reference for struct se_lun
* @data_length: fabric expected data transfer length
* @task_attr: SAM task attribute
* @data_dir: DMA data direction
* @flags: flags for command submission from target_sc_flags_tables
* @sgl: struct scatterlist memory for unidirectional mapping
* @sgl_count: scatterlist count for unidirectional mapping
* @sgl_bidi: struct scatterlist memory for bidirectional READ mapping
* @sgl_bidi_count: scatterlist count for bidirectional READ mapping
* @sgl_prot: struct scatterlist memory protection information
* @sgl_prot_count: scatterlist count for protection information
*
* Task tags are supported if the caller has set @se_cmd->tag.
*
* Returns non zero to signal active I/O shutdown failure. All other
* setup exceptions will be returned as a SCSI CHECK_CONDITION response,
* but still return zero here.
*
* This may only be called from process context, and also currently
* assumes internal allocation of fabric payload buffer by target-core.
*/
int target_submit_cmd_map_sgls(struct se_cmd *se_cmd, struct se_session *se_sess,
unsigned char *cdb, unsigned char *sense, u64 unpacked_lun,
u32 data_length, int task_attr, int data_dir, int flags,
struct scatterlist *sgl, u32 sgl_count,
struct scatterlist *sgl_bidi, u32 sgl_bidi_count,
struct scatterlist *sgl_prot, u32 sgl_prot_count)
{
int rc;
rc = target_init_cmd(se_cmd, se_sess, sense, unpacked_lun,
data_length, task_attr, data_dir, flags);
if (rc < 0)
return rc;
if (target_submit_prep(se_cmd, cdb, sgl, sgl_count, sgl_bidi,
sgl_bidi_count, sgl_prot, sgl_prot_count))
return 0;
target_submit(se_cmd);
return 0;
}
EXPORT_SYMBOL(target_submit_cmd_map_sgls);
/**
* target_submit_cmd - lookup unpacked lun and submit uninitialized se_cmd
*
@ -1820,22 +1768,32 @@ EXPORT_SYMBOL(target_submit_cmd_map_sgls);
*
* Task tags are supported if the caller has set @se_cmd->tag.
*
* Returns non zero to signal active I/O shutdown failure. All other
* setup exceptions will be returned as a SCSI CHECK_CONDITION response,
* but still return zero here.
*
* This may only be called from process context, and also currently
* assumes internal allocation of fabric payload buffer by target-core.
*
* It also assumes interal target core SGL memory allocation.
*
* This function must only be used by drivers that do their own
* sync during shutdown and does not use target_stop_session. If there
* is a failure this function will call into the fabric driver's
* queue_status with a CHECK_CONDITION.
*/
int target_submit_cmd(struct se_cmd *se_cmd, struct se_session *se_sess,
void target_submit_cmd(struct se_cmd *se_cmd, struct se_session *se_sess,
unsigned char *cdb, unsigned char *sense, u64 unpacked_lun,
u32 data_length, int task_attr, int data_dir, int flags)
{
return target_submit_cmd_map_sgls(se_cmd, se_sess, cdb, sense,
unpacked_lun, data_length, task_attr, data_dir,
flags, NULL, 0, NULL, 0, NULL, 0);
int rc;
rc = target_init_cmd(se_cmd, se_sess, sense, unpacked_lun, data_length,
task_attr, data_dir, flags);
WARN(rc, "Invalid target_submit_cmd use. Driver must not use target_stop_session or call target_init_cmd directly.\n");
if (rc)
return;
if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, NULL, 0))
return;
target_submit(se_cmd);
}
EXPORT_SYMBOL(target_submit_cmd);

6
include/target/target_core_fabric.h
View file

@ -162,11 +162,7 @@ void target_submit(struct se_cmd *se_cmd);
sense_reason_t transport_lookup_cmd_lun(struct se_cmd *);
sense_reason_t target_cmd_init_cdb(struct se_cmd *, unsigned char *);
sense_reason_t target_cmd_parse_cdb(struct se_cmd *);
int target_submit_cmd_map_sgls(struct se_cmd *, struct se_session *,
unsigned char *, unsigned char *, u64, u32, int, int, int,
struct scatterlist *, u32, struct scatterlist *, u32,
struct scatterlist *, u32);
int target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *,
void target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *,
unsigned char *, u64, u32, int, int, int);
int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
unsigned char *sense, u64 unpacked_lun,