[NETFILTER]: nf_queue: move list_head/skb/id to struct nf_info

Move common fields for queue management to struct nf_info and rename it
to struct nf_queue_entry. The avoids one allocation/free per packet and
simplifies the code a bit.

Alternatively we could add some private room at the tail, but since
all current users use identical structs this seems easier.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 5fe4ef4..f25eec5 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -270,7 +270,7 @@
 extern int skb_make_writable(struct sk_buff *skb, unsigned int writable_len);
 
 struct flowi;
-struct nf_info;
+struct nf_queue_entry;
 
 struct nf_afinfo {
 	unsigned short	family;
@@ -278,9 +278,9 @@
 				    unsigned int dataoff, u_int8_t protocol);
 	int		(*route)(struct dst_entry **dst, struct flowi *fl);
 	void		(*saveroute)(const struct sk_buff *skb,
-				     struct nf_info *info);
+				     struct nf_queue_entry *entry);
 	int		(*reroute)(struct sk_buff *skb,
-				   const struct nf_info *info);
+				   const struct nf_queue_entry *entry);
 	int		route_key_size;
 };