[NET]: Make ipip/ip6_tunnel independant of XFRM

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

3 files changed, 33 insertions, 7 deletions

diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index c7f1f9245bc9..fc561c0ae8e2 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -235,7 +235,6 @@ config IP_PNP_RARP
 #   bool '    IP: ARP support' CONFIG_IP_PNP_ARP                
 config NET_IPIP
         tristate "IP: tunneling"
-        select INET_TUNNEL
         ---help---
           Tunneling means encapsulating data of one protocol type within
           another protocol and sending it over a channel that understands the
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 68a78731f722..c3947cd566b7 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -273,7 +273,7 @@ static void ipip_tunnel_uninit(struct net_device *dev)
         dev_put(dev);
 }
 
-static void ipip_err(struct sk_buff *skb, void *__unused)
+static void ipip_err(struct sk_buff *skb, u32 info)
 {
 #ifndef I_WISH_WORLD_WERE_PERFECT
 
@@ -852,11 +852,39 @@ static int __init ipip_fb_tunnel_init(struct net_device *dev)
         return 0;
 }
 
+#ifdef CONFIG_INET_TUNNEL
 static struct xfrm_tunnel ipip_handler = {
         .handler        =       ipip_rcv,
         .err_handler    =       ipip_err,
 };
 
+static inline int ipip_register(void)
+{
+        return xfrm4_tunnel_register(&ipip_handler);
+}
+
+static inline int ipip_unregister(void)
+{
+        return xfrm4_tunnel_deregister(&ipip_handler);
+}
+#else
+static struct net_protocol ipip_protocol = {
+        .handler        =       ipip_rcv,
+        .err_handler    =       ipip_err,
+        .no_policy      =       1,
+};
+
+static inline int ipip_register(void)
+{
+        return inet_add_protocol(&ipip_protocol, IPPROTO_IPIP);
+}
+
+static inline int ipip_unregister(void)
+{
+        return inet_del_protocol(&ipip_protocol, IPPROTO_IPIP);
+}
+#endif
+
 static char banner[] __initdata =
         KERN_INFO "IPv4 over IPv4 tunneling driver\n";
 
@@ -866,7 +894,7 @@ static int __init ipip_init(void)
 
         printk(banner);
 
-        if (xfrm4_tunnel_register(&ipip_handler) < 0) {
+        if (ipip_register() < 0) {
                 printk(KERN_INFO "ipip init: can't register tunnel\n");
                 return -EAGAIN;
         }
@@ -888,13 +916,13 @@ static int __init ipip_init(void)
  err2:
         free_netdev(ipip_fb_tunnel_dev);
  err1:
-        xfrm4_tunnel_deregister(&ipip_handler);
+        ipip_unregister();
         goto out;
 }
 
 static void __exit ipip_fini(void)
 {
-        if (xfrm4_tunnel_deregister(&ipip_handler) < 0)
+        if (ipip_unregister() < 0)
                 printk(KERN_INFO "ipip close: can't deregister tunnel\n");
 
         unregister_netdev(ipip_fb_tunnel_dev);
diff --git a/net/ipv4/xfrm4_tunnel.c b/net/ipv4/xfrm4_tunnel.c
index e1fe360ed27a..afbb0d4cc305 100644
--- a/net/ipv4/xfrm4_tunnel.c
+++ b/net/ipv4/xfrm4_tunnel.c
@@ -78,10 +78,9 @@ static int ipip_rcv(struct sk_buff *skb)
 static void ipip_err(struct sk_buff *skb, u32 info)
 {
         struct xfrm_tunnel *handler = ipip_handler;
-        u32 arg = info;
 
         if (handler)
-                handler->err_handler(skb, &arg);
+                handler->err_handler(skb, info);
 }
 
 static int ipip_init_state(struct xfrm_state *x)