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authorNicholas Bellinger <nab@linux-iscsi.org>2012-10-01 17:23:22 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2012-10-02 14:16:08 -0700
commita026757ff56365b4aa3875c14f1bd5733e0e8bb2 (patch)
treec9cd1990da5bc8cc11808a78067e96923091e006 /include/target
parent38b11bae6ba02da352340aff12ee25755977b222 (diff)
downloadvexpress-lsk-a026757ff56365b4aa3875c14f1bd5733e0e8bb2.tar.gz
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.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 85a5d7a9954..81ddb4ae6c3 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,