From e33cdac014d50dd9753e1399ae8b0b5cd98d7aa0 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 1 Aug 2012 23:23:40 +0000
Subject: ipv4: route.c cleanup

Remove unused includes after IP cache removal

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/ipv4/route.c | 4 ----
 1 file changed, 4 deletions(-)

(limited to 'net/ipv4/route.c')

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index c035251beb07..e4ba974f143c 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -70,7 +70,6 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
-#include <linux/bootmem.h>
 #include <linux/string.h>
 #include <linux/socket.h>
 #include <linux/sockios.h>
@@ -80,7 +79,6 @@
 #include <linux/netdevice.h>
 #include <linux/proc_fs.h>
 #include <linux/init.h>
-#include <linux/workqueue.h>
 #include <linux/skbuff.h>
 #include <linux/inetdevice.h>
 #include <linux/igmp.h>
@@ -88,11 +86,9 @@
 #include <linux/mroute.h>
 #include <linux/netfilter_ipv4.h>
 #include <linux/random.h>
-#include <linux/jhash.h>
 #include <linux/rcupdate.h>
 #include <linux/times.h>
 #include <linux/slab.h>
-#include <linux/prefetch.h>
 #include <net/dst.h>
 #include <net/net_namespace.h>
 #include <net/protocol.h>
-- 
cgit v1.2.3


From 7bd86cc282a458b66c41e3f6676de6656c99b8db Mon Sep 17 00:00:00 2001
From: "Yan, Zheng" <zheng.z.yan@intel.com>
Date: Sun, 12 Aug 2012 20:09:59 +0000
Subject: ipv4: Cache local output routes

Commit caacf05e5ad1abf causes big drop of UDP loop back performance.
The cause of the regression is that we do not cache the local output
routes. Each time we send a datagram from unconnected UDP socket,
the kernel allocates a dst_entry and adds it to the rt_uncached_list.
It creates lock contention on the rt_uncached_lock.

Reported-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/ipv4/route.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'net/ipv4/route.c')

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index e4ba974f143c..fd9ecb52c66b 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2028,7 +2028,6 @@ struct rtable *__ip_route_output_key(struct net *net, struct flowi4 *fl4)
 		}
 		dev_out = net->loopback_dev;
 		fl4->flowi4_oif = dev_out->ifindex;
-		res.fi = NULL;
 		flags |= RTCF_LOCAL;
 		goto make_route;
 	}
-- 
cgit v1.2.3