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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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2
net/dccp/ipv4.c
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@ -504,7 +504,7 @@ static int dccp_v4_send_response(struct sock *sk, struct request_sock *req,
struct dst_entry *dst;
struct flowi4 fl4;
dst = inet_csk_route_req(sk, &fl4, req);
dst = inet_csk_route_req(sk, &fl4, req, false);
if (dst == NULL)
goto out;