[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>

1 files changed, 4 insertions, 1 deletions

diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index b0ed57981847..6210ca42166c 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -38,6 +38,8 @@
 #include <linux/netfilter/nfnetlink.h>
 
 MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
+MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_NETFILTER);
 
 static char __initdata nfversion[] = "0.30";
 
@@ -324,7 +326,8 @@ int __init nfnetlink_init(void)
 {
         printk("Netfilter messages via NETLINK v%s.\n", nfversion);
 
-        nfnl = netlink_kernel_create(NETLINK_NETFILTER, nfnetlink_rcv);
+        nfnl = netlink_kernel_create(NETLINK_NETFILTER, nfnetlink_rcv,
+                                     THIS_MODULE);
         if (!nfnl) {
                 printk(KERN_ERR "cannot initialize nfnetlink!\n");
                 return -1;