iscsi-target: Bump default TCP listen backlog to 256 (837f6452) · Commits · 戴 / test

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>

drivers/target/iscsi/iscsi_target_core.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

drivers/target/iscsi/iscsi_target_login.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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:

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