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[safe/jmp/linux-2.6] / net / ipv6 / sit.c

diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 5a6fab9..3de6ffd 100644 (file)
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -403,9 +403,8 @@ static void ipip6_tunnel_uninit(struct net_device *dev)
 
 static int ipip6_err(struct sk_buff *skb, u32 info)
 {
-#ifndef I_WISH_WORLD_WERE_PERFECT
 
-/* It is not :-( All the routers (except for Linux) return only
+/* All the routers (except for Linux) return only
    8 bytes of packet payload. It means, that precise relaying of
    ICMP in the real Internet is absolutely infeasible.
  */
@@ -462,92 +461,6 @@ static int ipip6_err(struct sk_buff *skb, u32 info)
 out:
        read_unlock(&ipip6_lock);
        return err;
-#else
-       struct iphdr *iph = (struct iphdr*)dp;
-       int hlen = iph->ihl<<2;
-       struct ipv6hdr *iph6;
-       const int type = icmp_hdr(skb)->type;
-       const int code = icmp_hdr(skb)->code;
-       int rel_type = 0;
-       int rel_code = 0;
-       int rel_info = 0;
-       struct sk_buff *skb2;
-       struct rt6_info *rt6i;
-
-       if (len < hlen + sizeof(struct ipv6hdr))
-               return;
-       iph6 = (struct ipv6hdr*)(dp + hlen);
-
-       switch (type) {
-       default:
-               return;
-       case ICMP_PARAMETERPROB:
-               if (icmp_hdr(skb)->un.gateway < hlen)
-                       return;
-
-               /* So... This guy found something strange INSIDE encapsulated
-                  packet. Well, he is fool, but what can we do ?
-                */
-               rel_type = ICMPV6_PARAMPROB;
-               rel_info = icmp_hdr(skb)->un.gateway - hlen;
-               break;
-
-       case ICMP_DEST_UNREACH:
-               switch (code) {
-               case ICMP_SR_FAILED:
-               case ICMP_PORT_UNREACH:
-                       /* Impossible event. */
-                       return;
-               case ICMP_FRAG_NEEDED:
-                       /* Too complicated case ... */
-                       return;
-               default:
-                       /* All others are translated to HOST_UNREACH.
-                          rfc2003 contains "deep thoughts" about NET_UNREACH,
-                          I believe, it is just ether pollution. --ANK
-                        */
-                       rel_type = ICMPV6_DEST_UNREACH;
-                       rel_code = ICMPV6_ADDR_UNREACH;
-                       break;
-               }
-               break;
-       case ICMP_TIME_EXCEEDED:
-               if (code != ICMP_EXC_TTL)
-                       return;
-               rel_type = ICMPV6_TIME_EXCEED;
-               rel_code = ICMPV6_EXC_HOPLIMIT;
-               break;
-       }
-
-       /* Prepare fake skb to feed it to icmpv6_send */
-       skb2 = skb_clone(skb, GFP_ATOMIC);
-       if (skb2 == NULL)
-               return 0;
-       dst_release(skb2->dst);
-       skb2->dst = NULL;
-       skb_pull(skb2, skb->data - (u8*)iph6);
-       skb_reset_network_header(skb2);
-
-       /* Try to guess incoming interface */
-       rt6i = rt6_lookup(dev_net(skb->dev), &iph6->saddr, NULL, NULL, 0);
-       if (rt6i && rt6i->rt6i_dev) {
-               skb2->dev = rt6i->rt6i_dev;
-
-               rt6i = rt6_lookup(dev_net(skb->dev),
-                               &iph6->daddr, &iph6->saddr, NULL, 0);
-
-               if (rt6i && rt6i->rt6i_dev && rt6i->rt6i_dev->type == ARPHRD_SIT) {
-                       struct ip_tunnel *t = netdev_priv(rt6i->rt6i_dev);
-                       if (rel_type == ICMPV6_TIME_EXCEED && t->parms.iph.ttl) {
-                               rel_type = ICMPV6_DEST_UNREACH;
-                               rel_code = ICMPV6_ADDR_UNREACH;
-                       }
-                       icmpv6_send(skb2, rel_type, rel_code, rel_info, skb2->dev);
-               }
-       }
-       kfree_skb(skb2);
-       return 0;
-#endif
 }
 
 static inline void ipip6_ecn_decapsulate(struct iphdr *iph, struct sk_buff *skb)