ipip, sit: fix ipv4_{update_pmtu,redirect} calls

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>

2 files changed, 4 insertions, 4 deletions

diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 812b18351462..09680ddbc677 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -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;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index e5a453ca302e..45397b2a4a0b 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -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;