ipip, sit: fix ipv4_{update_pmtu,redirect} calls
authorDmitry Popov <ixaphire@qrator.net>
Fri, 6 Jun 2014 19:19:21 +0000 (23:19 +0400)
committerDavid S. Miller <davem@davemloft.net>
Wed, 11 Jun 2014 06:35:52 +0000 (23:35 -0700)
ipv4_{update_pmtu,redirect} were called with tunnel's ifindex (t->dev is a
tunnel netdevice). It caused wrong route lookup and failure of pmtu update or
redirect. We should use the same ifindex that we use in ip_route_output_* in
*tunnel_xmit code. It is t->parms.link .

Signed-off-by: Dmitry Popov <ixaphire@qrator.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/ipip.c
net/ipv6/sit.c

index 812b183..09680dd 100644 (file)
@@ -149,13 +149,13 @@ static int ipip_err(struct sk_buff *skb, u32 info)
 
        if (type == ICMP_DEST_UNREACH && code == ICMP_FRAG_NEEDED) {
                ipv4_update_pmtu(skb, dev_net(skb->dev), info,
-                                t->dev->ifindex, 0, IPPROTO_IPIP, 0);
+                                t->parms.link, 0, IPPROTO_IPIP, 0);
                err = 0;
                goto out;
        }
 
        if (type == ICMP_REDIRECT) {
-               ipv4_redirect(skb, dev_net(skb->dev), t->dev->ifindex, 0,
+               ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0,
                              IPPROTO_IPIP, 0);
                err = 0;
                goto out;
index e5a453c..45397b2 100644 (file)
@@ -560,12 +560,12 @@ static int ipip6_err(struct sk_buff *skb, u32 info)
 
        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);
+                                t->parms.link, 0, IPPROTO_IPV6, 0);
                err = 0;
                goto out;
        }
        if (type == ICMP_REDIRECT) {
-               ipv4_redirect(skb, dev_net(skb->dev), t->dev->ifindex, 0,
+               ipv4_redirect(skb, dev_net(skb->dev), t->parms.link, 0,
                              IPPROTO_IPV6, 0);
                err = 0;
                goto out;