From 7586eceb0abc0ea1c2b023e3e5d4dfd4ff40930a Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@google.com>
Date: Wed, 20 Jun 2012 05:02:19 +0000
Subject: ipv4: tcp: dont cache output dst for syncookies

Don't cache output dst for syncookies, as this adds pressure on IP route
cache and rcu subsystem for no gain.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/net/flow.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/net/flow.h')

diff --git a/include/net/flow.h b/include/net/flow.h
index 6c469dbdb917..bd524f598561 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -22,6 +22,7 @@ struct flowi_common {
 #define FLOWI_FLAG_ANYSRC		0x01
 #define FLOWI_FLAG_PRECOW_METRICS	0x02
 #define FLOWI_FLAG_CAN_SLEEP		0x04
+#define FLOWI_FLAG_RT_NOCACHE		0x08
 	__u32	flowic_secid;
 };
 
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