modules: fix module waiting for dependent modules' init

[linux-2.6-omap-h63xx.git] / net / ipv4 / tunnel4.c

diff --git a/net/ipv4/tunnel4.c b/net/ipv4/tunnel4.c
index a794a8ca8b4fd86e1b501448eab60a2a5a99e1bb..978b3fd61e65533f3cf01f26521fc6f406288fac 100644 (file)
--- a/net/ipv4/tunnel4.c
+++ b/net/ipv4/tunnel4.c
@@ -17,6 +17,11 @@ static struct xfrm_tunnel *tunnel4_handlers;
 static struct xfrm_tunnel *tunnel64_handlers;
 static DEFINE_MUTEX(tunnel4_mutex);
 
+static inline struct xfrm_tunnel **fam_handlers(unsigned short family)
+{
+       return (family == AF_INET) ? &tunnel4_handlers : &tunnel64_handlers;
+}
+
 int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family)
 {
        struct xfrm_tunnel **pprev;
@@ -25,8 +30,7 @@ int xfrm4_tunnel_register(struct xfrm_tunnel *handler, unsigned short family)
 
        mutex_lock(&tunnel4_mutex);
 
-       for (pprev = (family == AF_INET) ? &tunnel4_handlers : &tunnel64_handlers;
-            *pprev; pprev = &(*pprev)->next) {
+       for (pprev = fam_handlers(family); *pprev; pprev = &(*pprev)->next) {
                if ((*pprev)->priority > priority)
                        break;
                if ((*pprev)->priority == priority)
@@ -53,8 +57,7 @@ int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler, unsigned short family)
 
        mutex_lock(&tunnel4_mutex);
 
-       for (pprev = (family == AF_INET) ? &tunnel4_handlers : &tunnel64_handlers;
-            *pprev; pprev = &(*pprev)->next) {
+       for (pprev = fam_handlers(family); *pprev; pprev = &(*pprev)->next) {
                if (*pprev == handler) {
                        *pprev = handler->next;
                        ret = 0;
@@ -118,6 +121,17 @@ 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 +141,7 @@ 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