[NETFILTER]: add /proc/net/netfilter interface to nf_queue

This patch adds a /proc/net/netfilter/nf_queue file, similar to the
recently-added /proc/net/netfilter/nf_log.  It indicates which queue
handler is registered to which protocol family.  This is useful since
there are now multiple queue handlers in the treee (ip[6]_queue,
nfnetlink_queue).

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

1 files changed, 8 insertions, 5 deletions

diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 815583af06c2..bf430fcbe364 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -225,13 +225,16 @@ int nf_getsockopt(struct sock *sk, int pf, int optval, char __user *opt,
                   int *len);
 
 /* Packet queuing */
-typedef int (*nf_queue_outfn_t)(struct sk_buff *skb, 
-                                struct nf_info *info,
-                                unsigned int queuenum, void *data);
+struct nf_queue_handler {
+        int (*outfn)(struct sk_buff *skb, struct nf_info *info,
+                     unsigned int queuenum, void *data);
+        void *data;
+        char *name;
+};
 extern int nf_register_queue_handler(int pf, 
-                                     nf_queue_outfn_t outfn, void *data);
+                                     struct nf_queue_handler *qh);
 extern int nf_unregister_queue_handler(int pf);
-extern void nf_unregister_queue_handlers(nf_queue_outfn_t outfn);
+extern void nf_unregister_queue_handlers(struct nf_queue_handler *qh);
 extern void nf_reinject(struct sk_buff *skb,
                         struct nf_info *info,
                         unsigned int verdict);