diff options
Diffstat (limited to 'net/ipv6/sit.c')
| -rw-r--r-- | net/ipv6/sit.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 60415711563f..3bd1bfc01f85 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -527,9 +527,6 @@ static int ipip6_err(struct sk_buff *skb, u32 info) case ICMP_PORT_UNREACH: /* Impossible event. */ return 0; - case ICMP_FRAG_NEEDED: - /* Soft state for pmtu is maintained by IP core. */ - return 0; default: /* All others are translated to HOST_UNREACH. rfc2003 contains "deep thoughts" about NET_UNREACH, @@ -542,6 +539,8 @@ static int ipip6_err(struct sk_buff *skb, u32 info) if (code != ICMP_EXC_TTL) return 0; break; + case ICMP_REDIRECT: + break; } err = -ENOENT; @@ -551,7 +550,23 @@ static int ipip6_err(struct sk_buff *skb, u32 info) skb->dev, iph->daddr, iph->saddr); - if (t == NULL || t->parms.iph.daddr == 0) + if (t == NULL) + goto out; + + if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) { + ipv4_update_pmtu(skb, dev_net(skb->dev), info, + t->dev->ifindex, 0, IPPROTO_IPV6, 0); + err = 0; + goto out; + } + if (type == ICMP_REDIRECT) { + ipv4_redirect(skb, dev_net(skb->dev), t->dev->ifindex, 0, + IPPROTO_IPV6, 0); + err = 0; + goto out; + } + + if (t->parms.iph.daddr == 0) goto out; err = 0; @@ -792,7 +807,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb, } if (tunnel->parms.iph.daddr && skb_dst(skb)) - skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu); + skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu); if (skb->len > mtu) { icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); |