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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-10-01 17:23:22 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-10-02 14:16:08 -0700 |
| commit | a026757ff56365b4aa3875c14f1bd5733e0e8bb2 (patch) | |
| tree | c9cd1990da5bc8cc11808a78067e96923091e006 /include/target | |
| parent | 38b11bae6ba02da352340aff12ee25755977b222 (diff) | |
| download | linux-a026757ff56365b4aa3875c14f1bd5733e0e8bb2.tar.gz linux-a026757ff56365b4aa3875c14f1bd5733e0e8bb2.tar.bz2 linux-a026757ff56365b4aa3875c14f1bd5733e0e8bb2.zip | |
target: Add target_submit_cmd_map_sgls for SGL fabric memory passthrough
This patch adds a new target_submit_cmd_map_sgls() to pass pre-allocated
SGL memory using transport_generic_map_mem_to_cmd() logic into the generic
target submit I/O codepath.
It also adds a target_submit_cmd() wrapper around target_submit_cmd_map_sgls()
for existing fabric code that already assumes internal target-core SGL memory
allocation.
(v2: Rename to target_submit_cmd_map_sgls + drop TARGET_SCF_MAP_MEM flag
in favor of non zero sgl_count check)
Reported-by: Christoph Hellwig <hch@lst.de>
Cc: 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_fabric.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h index 85a5d7a99543..81ddb4ae6c3f 100644 --- a/include/target/target_core_fabric.h +++ b/include/target/target_core_fabric.h @@ -100,6 +100,9 @@ void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *, struct se_session *, u32, int, int, unsigned char *); int transport_lookup_cmd_lun(struct se_cmd *, u32); int target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *); +int target_submit_cmd_map_sgls(struct se_cmd *, struct se_session *, + unsigned char *, unsigned char *, u32, u32, int, int, int, + struct scatterlist *, u32, struct scatterlist *, u32); int target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *, unsigned char *, u32, u32, int, int, int); int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess, |