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Message-Id: <20111206.163333.1488671593845696998.davem@davemloft.net> Date: Tue, 06 Dec 2011 16:33:33 -0500 (EST) From: David Miller <davem@...emloft.net> To: netdev@...r.kernel.org Subject: [PATCH 8/13 net-3.1-stable] ipv4: avoid useless call of the function check_peer_pmtu From: Gao feng <gaofeng@...fujitsu.com> [ Upstream commit 59445b6b1f90b97c4e28062b96306bacfa4fb170 ] 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@...fujitsu.com> Acked-by: Eric Dumazet <eric.dumazet@...il.com> Signed-off-by: David S. Miller <davem@...emloft.net> --- net/ipv4/route.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 8b3661b..c3fcdb4 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1572,11 +1572,10 @@ 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; } -- 1.7.7.3 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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