[PPPOL2TP]: Reset meta-data in xmit function

Reset netfilter data and IP CB, fix dst_entry leak.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/pppol2tp.c b/drivers/net/pppol2tp.c
index 856610f0624e..f87176055d0e 100644
--- a/drivers/net/pppol2tp.c
+++ b/drivers/net/pppol2tp.c
@@ -1049,7 +1049,13 @@ static int pppol2tp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
                 printk("\n");
         }
 
+        memset(&(IPCB(skb2)->opt), 0, sizeof(IPCB(skb2)->opt));
+        IPCB(skb2)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED |
+                               IPSKB_REROUTED);
+        nf_reset(skb2);
+
         /* Get routing info from the tunnel socket */
+        dst_release(skb2->dst);
         skb2->dst = sk_dst_get(sk_tun);
 
         /* Queue the packet to IP for output */