ip_tunnel: push generic protocol handling to ip_tunnel module.
Process skb tunnel header before sending packet to protocol handler.
this allows code sharing between gre and ovs gre modules.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/gre.c b/net/ipv4/gre.c
index 5ecc9c4..ba4803e 100644
--- a/net/ipv4/gre.c
+++ b/net/ipv4/gre.c
@@ -201,7 +201,8 @@
return -EINVAL;
}
}
- return 0;
+
+ return iptunnel_pull_header(skb, hdr_len, tpi->proto);
}
static int gre_cisco_rcv(struct sk_buff *skb)