From c6cffba4ffa26a8ffacd0bb9f3144e34f20da7de Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 26 Jul 2012 11:14:38 +0000 Subject: ipv4: Fix input route performance regression. With the routing cache removal we lost the "noref" code paths on input, and this can kill some routing workloads. Reinstate the noref path when we hit a cached route in the FIB nexthops. With help from Eric Dumazet. Reported-by: Alexander Duyck Signed-off-by: David S. Miller Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/ip_input.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/ipv4/ip_input.c') diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c index 93134b0eab0c..bda8cac2ae91 100644 --- a/net/ipv4/ip_input.c +++ b/net/ipv4/ip_input.c @@ -339,8 +339,8 @@ static int ip_rcv_finish(struct sk_buff *skb) * how the packet travels inside Linux networking. */ if (!skb_dst(skb)) { - int err = ip_route_input(skb, iph->daddr, iph->saddr, - iph->tos, skb->dev); + int err = ip_route_input_noref(skb, iph->daddr, iph->saddr, + iph->tos, skb->dev); if (unlikely(err)) { if (err == -EXDEV) NET_INC_STATS_BH(dev_net(skb->dev), -- cgit v1.2.3-59-g8ed1b