1 files changed, 14 insertions, 67 deletions

diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index 08f9abbdf1d7..a8f6776c518d 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -28,7 +28,6 @@
 #include <net/ip.h>
 #include <net/xfrm.h>
 #include <net/ipv6.h>
-#include <net/protocol.h>
 #include <linux/ipv6.h>
 #include <linux/icmpv6.h>
 #include <linux/mutex.h>
@@ -357,71 +356,18 @@ static int xfrm6_tunnel_input(struct xfrm_state *x, struct xfrm_decap_state *dec
         return 0;
 }
 
-static struct xfrm6_tunnel *xfrm6_tunnel_handler;
-static DEFINE_MUTEX(xfrm6_tunnel_mutex);
-
-int xfrm6_tunnel_register(struct xfrm6_tunnel *handler)
+static int xfrm6_tunnel_rcv(struct sk_buff *skb)
 {
-        int ret;
-
-        mutex_lock(&xfrm6_tunnel_mutex);
-        ret = 0;
-        if (xfrm6_tunnel_handler != NULL)
-                ret = -EINVAL;
-        if (!ret)
-                xfrm6_tunnel_handler = handler;
-        mutex_unlock(&xfrm6_tunnel_mutex);
-
-        return ret;
-}
-
-EXPORT_SYMBOL(xfrm6_tunnel_register);
-
-int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler)
-{
-        int ret;
-
-        mutex_lock(&xfrm6_tunnel_mutex);
-        ret = 0;
-        if (xfrm6_tunnel_handler != handler)
-                ret = -EINVAL;
-        if (!ret)
-                xfrm6_tunnel_handler = NULL;
-        mutex_unlock(&xfrm6_tunnel_mutex);
-
-        synchronize_net();
-
-        return ret;
-}
-
-EXPORT_SYMBOL(xfrm6_tunnel_deregister);
-
-static int xfrm6_tunnel_rcv(struct sk_buff **pskb)
-{
-        struct sk_buff *skb = *pskb;
-        struct xfrm6_tunnel *handler = xfrm6_tunnel_handler;
         struct ipv6hdr *iph = skb->nh.ipv6h;
         u32 spi;
 
-        /* device-like_ip6ip6_handler() */
-        if (handler && handler->handler(pskb) == 0)
-                return 0;
-
         spi = xfrm6_tunnel_spi_lookup((xfrm_address_t *)&iph->saddr);
-        return xfrm6_rcv_spi(pskb, spi);
+        return xfrm6_rcv_spi(skb, spi);
 }
 
-static void xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
-                             int type, int code, int offset, __u32 info)
+static int xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+                            int type, int code, int offset, __u32 info)
 {
-        struct xfrm6_tunnel *handler = xfrm6_tunnel_handler;
-
-        /* call here first for device-like ip6ip6 err handling */
-        if (handler) {
-                handler->err_handler(skb, opt, type, code, offset, info);
-                return;
-        }
-
         /* xfrm6_tunnel native err handling */
         switch (type) {
         case ICMPV6_DEST_UNREACH: 
@@ -462,7 +408,8 @@ static void xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
         default:
                 break;
         }
-        return;
+
+        return 0;
 }
 
 static int xfrm6_tunnel_init_state(struct xfrm_state *x)
@@ -493,10 +440,10 @@ static struct xfrm_type xfrm6_tunnel_type = {
         .output         = xfrm6_tunnel_output,
 };
 
-static struct inet6_protocol xfrm6_tunnel_protocol = {
+static struct xfrm6_tunnel xfrm6_tunnel_handler = {
         .handler        = xfrm6_tunnel_rcv,
-        .err_handler    = xfrm6_tunnel_err, 
-        .flags          = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
+        .err_handler    = xfrm6_tunnel_err,
+        .priority       = 2,
 };
 
 static int __init xfrm6_tunnel_init(void)
@@ -508,16 +455,16 @@ static int __init xfrm6_tunnel_init(void)
                            "xfrm6_tunnel init: can't add xfrm type\n");
                 return -EAGAIN;
         }
-        if (inet6_add_protocol(&xfrm6_tunnel_protocol, IPPROTO_IPV6) < 0) {
+        if (xfrm6_tunnel_register(&xfrm6_tunnel_handler)) {
                 X6TPRINTK1(KERN_ERR
-                           "xfrm6_tunnel init(): can't add protocol\n");
+                           "xfrm6_tunnel init(): can't add handler\n");
                 xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
                 return -EAGAIN;
         }
         if (xfrm6_tunnel_spi_init() < 0) {
                 X6TPRINTK1(KERN_ERR
                            "xfrm6_tunnel init: failed to initialize spi\n");
-                inet6_del_protocol(&xfrm6_tunnel_protocol, IPPROTO_IPV6);
+                xfrm6_tunnel_deregister(&xfrm6_tunnel_handler);
                 xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
                 return -EAGAIN;
         }
@@ -529,9 +476,9 @@ static void __exit xfrm6_tunnel_fini(void)
         X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__);
 
         xfrm6_tunnel_spi_fini();
-        if (inet6_del_protocol(&xfrm6_tunnel_protocol, IPPROTO_IPV6) < 0)
+        if (xfrm6_tunnel_deregister(&xfrm6_tunnel_handler))
                 X6TPRINTK1(KERN_ERR 
-                           "xfrm6_tunnel close: can't remove protocol\n");
+                           "xfrm6_tunnel close: can't remove handler\n");
         if (xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6) < 0)
                 X6TPRINTK1(KERN_ERR
                            "xfrm6_tunnel close: can't remove xfrm type\n");