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inetpeer: Move ICMP rate limiting state into inet_peer entries.

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Like metrics, the ICMP rate limiting bits are cached state about
a destination.  So move it into the inet_peer entries.

If an inet_peer cannot be bound (the reason is memory allocation
failure or similar), the policy is to allow.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2011-02-04 15:55:25 -08:00
parent 0131ba451e
commit 92d8682926
9 changed files with 108 additions and 73 deletions
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5
net/ipv6/ip6_output.c
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@@ -479,10 +479,13 @@ int ip6_forward(struct sk_buff *skb)
else
target = &hdr->daddr;
if (!rt->rt6i_peer)
rt6_bind_peer(rt, 1);
/* Limit redirects both by destination (here)
and by source (inside ndisc_send_redirect)
*/
if (xrlim_allow(dst, 1*HZ))
if (inet_peer_xrlim_allow(rt->rt6i_peer, 1*HZ))
ndisc_send_redirect(skb, n, target);
} else {
int addrtype = ipv6_addr_type(&hdr->saddr);