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| author | Gao feng <gaofeng@cn.fujitsu.com> | 2011-10-19 17:34:09 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-10-25 00:30:07 +0200 |
| commit | 59445b6b1f90b97c4e28062b96306bacfa4fb170 (patch) | |
| tree | 61408e20f1e56c98a5b377ae02079dc5c229af00 /net/ipv4/route.c | |
| parent | Merge branch 'master' of ra.kernel.org:/pub/scm/linux/kernel/git/davem/net (diff) | |
| download | linux-59445b6b1f90b97c4e28062b96306bacfa4fb170.tar.xz linux-59445b6b1f90b97c4e28062b96306bacfa4fb170.zip | |
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>
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | 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 1082460daca7..155138d8ec8b 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -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; } |