From a026757ff56365b4aa3875c14f1bd5733e0e8bb2 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Mon, 1 Oct 2012 17:23:22 -0700 Subject: 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 Cc: Christoph Hellwig Signed-off-by: Nicholas Bellinger --- include/target/target_core_fabric.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/target') 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, -- cgit v1.2.3-59-g8ed1b