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net: ingress filter message limit 

If user misconfigures ingress and causes a redirection loop, don't
overwhelm the log.  This is also a error case so make it unlikely.
Found by inspection, luckily not in real system.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2010-08-01 00:33:23 -07:00 committed by David S. Miller
parent e2e0c7c9dd
commit de38483010
1 changed files with 4 additions and 4 deletions
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8
net/core/dev.c
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@ -2646,10 +2646,10 @@ static int ing_filter(struct sk_buff *skb)
int result = TC_ACT_OK;
struct Qdisc *q;
if (MAX_RED_LOOP < ttl++) {
printk(KERN_WARNING
"Redir loop detected Dropping packet (%d->%d)\n",
skb->skb_iif, dev->ifindex);
if (unlikely(MAX_RED_LOOP < ttl++)) {
if (net_ratelimit())
pr_warning( "Redir loop detected Dropping packet (%d->%d)\n",
skb->skb_iif, dev->ifindex);
return TC_ACT_SHOT;
}