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authorNicholas Bellinger <nab@linux-iscsi.org>2013-09-09 16:24:46 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2013-09-10 20:23:34 -0700
commit837f6452b870e7e68c2b6a0d50758885c860ab66 (patch)
tree23bfb1b198195e8cc4ef6c50ae8d3f474c569345 /drivers/target/iscsi
parentf730f9158f6ee7b5c4d892af6b51a72194445ea4 (diff)
iscsi-target: Bump default TCP listen backlog to 256
This patch bumps the default TCP listen backlog within iscsit_setup_np() from 5 to 256, in order to reduce the overall latency caused by a small backlog with 100's of simultaneous login attempts directed to the same single network portal. Also add a ISCSIT_TCP_BACKLOG macro in iscsi_target_core.h. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/iscsi')
-rw-r--r--drivers/target/iscsi/iscsi_target_core.h1
-rw-r--r--drivers/target/iscsi/iscsi_target_login.c2
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/target/iscsi/iscsi_target_core.h b/drivers/target/iscsi/iscsi_target_core.h
index f6ff257e2b66..1e84f6fc1cc8 100644
--- a/drivers/target/iscsi/iscsi_target_core.h
+++ b/drivers/target/iscsi/iscsi_target_core.h
@@ -19,6 +19,7 @@
#define WHITE_SPACE " \t\v\f\n\r"
#define ISCSIT_MIN_TAGS 16
#define ISCSIT_EXTRA_TAGS 8
+#define ISCSIT_TCP_BACKLOG 256
/* struct iscsi_node_attrib sanity values */
#define NA_DATAOUT_TIMEOUT 3
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index d903c0c702d6..5f9248ddade9 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -873,7 +873,7 @@ int iscsit_setup_np(
struct __kernel_sockaddr_storage *sockaddr)
{
struct socket *sock = NULL;
- int backlog = 5, ret, opt = 0, len;
+ int backlog = ISCSIT_TCP_BACKLOG, ret, opt = 0, len;
switch (np->np_network_transport) {
case ISCSI_TCP: