[INET]: Add missed tunnel64_err handler

The tunnel64_protocol uses the tunnel4_protocol's err_handler and
thus calls the tunnel4_protocol's handlers.

This is not very good, as in case of (icmp) error the wrong error
handlers will be called (e.g. ipip ones instead of sit) and this
won't be noticed at all, because the error is not reported.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 1 deletions

diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c
index a794a8ca8b4f..d619d2e83f5d 100644
--- a/net/ipv4/tunnel4.c
+++ b/net/ipv4/tunnel4.c
@@ -118,6 +118,17 @@ static void tunnel4_err(struct sk_buff *skb, u32 info)
                         break;
 }
 
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static void tunnel64_err(struct sk_buff *skb, u32 info)
+{
+        struct xfrm_tunnel *handler;
+
+        for (handler = tunnel64_handlers; handler; handler = handler->next)
+                if (!handler->err_handler(skb, info))
+                        break;
+}
+#endif
+
 static struct net_protocol tunnel4_protocol = {
         .handler        =       tunnel4_rcv,
         .err_handler    =       tunnel4_err,
@@ -127,7 +138,7 @@ static struct net_protocol tunnel4_protocol = {
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 static struct net_protocol tunnel64_protocol = {
         .handler        =       tunnel64_rcv,
-        .err_handler    =       tunnel4_err,
+        .err_handler    =       tunnel64_err,
         .no_policy      =       1,
 };
 #endif