Commit 59445b6b authored by Gao feng's avatar Gao feng Committed by David S. Miller

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: default avatarGao feng <gaofeng@cn.fujitsu.com>
Acked-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1805b2f0
...@@ -1593,11 +1593,10 @@ unsigned short ip_rt_frag_needed(struct net *net, const struct iphdr *iph, ...@@ -1593,11 +1593,10 @@ unsigned short ip_rt_frag_needed(struct net *net, const struct iphdr *iph,
est_mtu = mtu; est_mtu = mtu;
peer->pmtu_learned = mtu; peer->pmtu_learned = mtu;
peer->pmtu_expires = pmtu_expires; peer->pmtu_expires = pmtu_expires;
atomic_inc(&__rt_peer_genid);
} }
inet_putpeer(peer); inet_putpeer(peer);
atomic_inc(&__rt_peer_genid);
} }
return est_mtu ? : new_mtu; return est_mtu ? : new_mtu;
} }
......
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