Commit 59445b6b authored Oct 19, 2011 by Gao feng Committed by David S. Miller Oct 24, 2011

ipv4: avoid useless call of the function check_peer_pmtu

In func ipv4_dst_check,check_peer_pmtu should be called only when peer is updated.
So,if the peer is not updated in ip_rt_frag_needed,we can not inc __rt_peer_genid.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 1805b2f0

net/ipv4/route.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -1593,11 +1593,10 @@ unsigned short ip_rt_frag_needed(struct net net, const struct iphdr iph,
		est_mtu = mtu;
		peer->pmtu_learned = mtu;
		peer->pmtu_expires = pmtu_expires;
		atomic_inc(&__rt_peer_genid);
		}

		inet_putpeer(peer);

		atomic_inc(&__rt_peer_genid);
		}
		return est_mtu ? : new_mtu;
		}