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| author |   David S. Miller <davem@davemloft.net> | 2012-07-26 11:14:38 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-07-26 15:50:39 -0700 |
| commit | c6cffba4ffa26a8ffacd0bb9f3144e34f20da7de (patch) | |
| tree | b67532a74343d42bcf8784b8e32d7cf6d69313db /net/ipv4/arp.c | |
| parent | pch_gbe: vlan skb len fix (diff) | |
| download | linux-dev-c6cffba4ffa26a8ffacd0bb9f3144e34f20da7de.tar.xz linux-dev-c6cffba4ffa26a8ffacd0bb9f3144e34f20da7de.zip | |
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 <alexander.duyck@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/arp.c')
| -rw-r--r-- | net/ipv4/arp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index a0124eb7dbea..77e87aff419a 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -827,7 +827,7 @@ static int arp_process(struct sk_buff *skb) } if (arp->ar_op == htons(ARPOP_REQUEST) && - ip_route_input(skb, tip, sip, 0, dev) == 0) { + ip_route_input_noref(skb, tip, sip, 0, dev) == 0) { rt = skb_rtable(skb); addr_type = rt->rt_type; |