ipv4: Add redirect support to all protocol icmp error handlers.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 7b95b49..b61e9de 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -484,17 +484,25 @@
struct ip_esp_hdr *esph = (struct ip_esp_hdr *)(skb->data+(iph->ihl<<2));
struct xfrm_state *x;
- if (icmp_hdr(skb)->type != ICMP_DEST_UNREACH ||
- icmp_hdr(skb)->code != ICMP_FRAG_NEEDED)
+ switch (icmp_hdr(skb)->type) {
+ case ICMP_DEST_UNREACH:
+ if (icmp_hdr(skb)->code != ICMP_FRAG_NEEDED)
+ return;
+ case ICMP_REDIRECT:
+ break;
+ default:
return;
+ }
x = xfrm_state_lookup(net, skb->mark, (const xfrm_address_t *)&iph->daddr,
esph->spi, IPPROTO_ESP, AF_INET);
if (!x)
return;
- NETDEBUG(KERN_DEBUG "pmtu discovery on SA ESP/%08x/%08x\n",
- ntohl(esph->spi), ntohl(iph->daddr));
- ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_ESP, 0);
+
+ if (icmp_hdr(skb)->type == ICMP_DEST_UNREACH)
+ ipv4_update_pmtu(skb, net, info, 0, 0, IPPROTO_ESP, 0);
+ else
+ ipv4_redirect(skb, net, 0, 0, IPPROTO_ESP, 0);
xfrm_state_put(x);
}