diff options
| author | Herbert Xu | 2005-10-03 14:18:10 -0700 |
|---|---|---|
| committer | David S. Miller | 2005-10-03 14:18:10 -0700 |
| commit | 444fc8fc3a1f926fa224655b8950bd853368c1a3 (patch) | |
| tree | f6359721fc50ac3802b30d705e2c7c06b983c5f8 | |
| parent | 496a22b08fa326bf17c11eb900e0505aa9da3506 (diff) | |
[IPV4]: Fix "Proxy ARP seems broken"
Meelis Roos <mroos@linux.ee> wrote:
> RK> My firewall setup relies on proxyarp working. However, with 2.6.14-rc3,
> RK> it appears to be completely broken. The firewall is 212.18.232.186,
>
> Same here with some kernel between 14-rc2 and 14-rc3 - no reposnse to
> ARP on a proxyarp gateway. Sorry, no exact revison and no more debugging
> yet since it'a a production gateway.
The breakage is caused by the change to use the CB area for flagging
whether a packet has been queued due to proxy_delay. This area gets
cleared every time arp_rcv gets called. Unfortunately packets delayed
due to proxy_delay also go through arp_rcv when they are reprocessed.
In fact, I can't think of a reason why delayed proxy packets should go
through netfilter again at all. So the easiest solution is to bypass
that and go straight to arp_process.
This is essentially what would've happened before netfilter support
was added to ARP.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/arp.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index 8bf312bdea13..ec0e36893b01 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -697,12 +697,6 @@ void arp_send(int type, int ptype, u32 dest_ip, arp_xmit(skb); } -static void parp_redo(struct sk_buff *skb) -{ - nf_reset(skb); - arp_rcv(skb, skb->dev, NULL, skb->dev); -} - /* * Process an arp request. */ @@ -922,6 +916,11 @@ out: return 0; } +static void parp_redo(struct sk_buff *skb) +{ + arp_process(skb); +} + /* * Receive an arp request from the device layer. |