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authorDavid Disseldorp <ddiss@suse.de>2017-01-02 18:04:05 +0100
committerBart Van Assche <bart.vanassche@sandisk.com>2017-01-10 08:41:12 -0800
commit94aae4caacda89a1bdb7198b260f4ca3595b7ed7 (patch)
tree4717092498edd8368b38df97068b92bfb7c4c6dd /drivers/target
parentc243849720ac237e9e7191fe57f619bb3a871d4c (diff)
downloadlinux-94aae4caacda89a1bdb7198b260f4ca3595b7ed7.tar.bz2
target: simplify XCOPY wwn->se_dev lookup helper
target_xcopy_locate_se_dev_e4() is used to locate an se_dev, based on the WWN provided with the XCOPY request. Remove a couple of unneeded arguments, and rely on the caller for the src/dst test. Signed-off-by: David Disseldorp <ddiss@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_xcopy.c28
1 files changed, 9 insertions, 19 deletions
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index 52738a108e5f..155db18ee4e7 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -53,18 +53,13 @@ static int target_xcopy_gen_naa_ieee(struct se_device *dev, unsigned char *buf)
return 0;
}
-static int target_xcopy_locate_se_dev_e4(struct se_cmd *se_cmd, struct xcopy_op *xop,
- bool src)
+static int target_xcopy_locate_se_dev_e4(const unsigned char *dev_wwn,
+ struct se_device **found_dev)
{
struct se_device *se_dev;
- unsigned char tmp_dev_wwn[XCOPY_NAA_IEEE_REGEX_LEN], *dev_wwn;
+ unsigned char tmp_dev_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
int rc;
- if (src)
- dev_wwn = &xop->dst_tid_wwn[0];
- else
- dev_wwn = &xop->src_tid_wwn[0];
-
mutex_lock(&g_device_mutex);
list_for_each_entry(se_dev, &g_device_list, g_dev_node) {
@@ -78,15 +73,8 @@ static int target_xcopy_locate_se_dev_e4(struct se_cmd *se_cmd, struct xcopy_op
if (rc != 0)
continue;
- if (src) {
- xop->dst_dev = se_dev;
- pr_debug("XCOPY 0xe4: Setting xop->dst_dev: %p from located"
- " se_dev\n", xop->dst_dev);
- } else {
- xop->src_dev = se_dev;
- pr_debug("XCOPY 0xe4: Setting xop->src_dev: %p from located"
- " se_dev\n", xop->src_dev);
- }
+ *found_dev = se_dev;
+ pr_debug("XCOPY 0xe4: located se_dev: %p\n", se_dev);
rc = target_depend_item(&se_dev->dev_group.cg_item);
if (rc != 0) {
@@ -247,9 +235,11 @@ static int target_xcopy_parse_target_descriptors(struct se_cmd *se_cmd,
}
if (xop->op_origin == XCOL_SOURCE_RECV_OP)
- rc = target_xcopy_locate_se_dev_e4(se_cmd, xop, true);
+ rc = target_xcopy_locate_se_dev_e4(xop->dst_tid_wwn,
+ &xop->dst_dev);
else
- rc = target_xcopy_locate_se_dev_e4(se_cmd, xop, false);
+ rc = target_xcopy_locate_se_dev_e4(xop->src_tid_wwn,
+ &xop->src_dev);
/*
* If a matching IEEE NAA 0x83 descriptor for the requested device
* is not located on this node, return COPY_ABORTED with ASQ/ASQC