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ipv4: tcp: dont cache output dst for syncookies

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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>
This commit is contained in:
Eric Dumazet
2012-06-20 05:02:19 +00:00
committed by David S. Miller
parent 24ea818e30
commit 7586eceb0a
6 changed files with 21 additions and 10 deletions
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include/net/flow.h
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@@ -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;
};