[NETLINK]: Add properly module refcounting for kernel netlink sockets.

- Remove bogus code for compiling netlink as module
- Add module refcounting support for modules implementing a netlink
  protocol
- Add support for autoloading modules that implement a netlink protocol
  as soon as someone opens a socket for that protocol

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/net.h b/include/linux/net.h
index 20cb226b2268..39906619b9d7 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -282,5 +282,8 @@ static struct proto_ops name##_ops = {			\
 #define MODULE_ALIAS_NETPROTO(proto) \
         MODULE_ALIAS("net-pf-" __stringify(proto))
 
+#define MODULE_ALIAS_NET_PF_PROTO(pf, proto) \
+        MODULE_ALIAS("net-pf-" __stringify(pf) "-proto-" __stringify(proto))
+
 #endif /* __KERNEL__ */
 #endif  /* _LINUX_NET_H */
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 6552b71bfa73..1c50fea8995b 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -117,7 +117,7 @@ struct netlink_skb_parms
 #define NETLINK_CREDS(skb)      (&NETLINK_CB((skb)).creds)
 
 
-extern struct sock *netlink_kernel_create(int unit, void (*input)(struct sock *sk, int len));
+extern struct sock *netlink_kernel_create(int unit, void (*input)(struct sock *sk, int len), struct module *module);
 extern void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err);
 extern int netlink_unicast(struct sock *ssk, struct sk_buff *skb, __u32 pid, int nonblock);
 extern int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, __u32 pid,