aboutsummaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2016-05-03 18:01:10 +0200
committerDoug Ledford <dledford@redhat.com>2016-05-13 13:37:19 -0400
commite64aa657c3d0dae84c2ccc166f6fe25b7d1d28c6 (patch)
tree898c3e12c36c5d5b561aacb0b8fa2e9804714e1a /include
parenta060b5629ab066dd1d321430eeb96f70939a1790 (diff)
downloadlinux-stericsson-e64aa657c3d0dae84c2ccc166f6fe25b7d1d28c6.tar.gz
target: enhance and export target_alloc_sgl/target_free_sgl
The SRP target driver will need to allocate and chain it's own SGLs soon. For this export target_alloc_sgl, and add a new argument to it so that it can allocate an additional chain entry that doesn't point to a page. Also export transport_free_sgl after renaming it to target_free_sgl to free these SGLs again. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/target/target_core_backend.h1
-rw-r--r--include/target/target_core_fabric.h4
2 files changed, 4 insertions, 1 deletions
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index 28ee5c2e6bcd..d8ab5101fad5 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -85,7 +85,6 @@ extern struct configfs_attribute *passthrough_attrib_attrs[];
void *transport_kmap_data_sg(struct se_cmd *);
void transport_kunmap_data_sg(struct se_cmd *);
/* core helpers also used by xcopy during internal command setup */
-int target_alloc_sgl(struct scatterlist **, unsigned int *, u32, bool);
sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *,
struct scatterlist *, u32, struct scatterlist *, u32);
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 8ff6d40a294f..78d88f03b296 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -185,6 +185,10 @@ int core_tpg_set_initiator_node_tag(struct se_portal_group *,
int core_tpg_register(struct se_wwn *, struct se_portal_group *, int);
int core_tpg_deregister(struct se_portal_group *);
+int target_alloc_sgl(struct scatterlist **sgl, unsigned int *nents,
+ u32 length, bool zero_page, bool chainable);
+void target_free_sgl(struct scatterlist *sgl, int nents);
+
/*
* The LIO target core uses DMA_TO_DEVICE to mean that data is going
* to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean