[NETFILTER]: nf_queue: remove unused data pointer

Remove the data pointer from struct nf_queue_handler. It has never been used
and is useless for the only handler that really matters, nfnetlink_queue,
since the handler is shared between all instances.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netfilter.h

@@ -277,8 +277,7 @@ int compat_nf_getsockopt(struct sock *sk, int pf, int optval,
 /* Packet queuing */
 struct nf_queue_handler {
 	int (*outfn)(struct sk_buff *skb, struct nf_info *info,
-		     unsigned int queuenum, void *data);
-	void *data;
+		     unsigned int queuenum);
 	char *name;
 };
 extern int nf_register_queue_handler(int pf,

net/ipv4/netfilter/ip_queue.c

@@ -272,7 +272,7 @@ ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
 
 static int
 ipq_enqueue_packet(struct sk_buff *skb, struct nf_info *info,
-		   unsigned int queuenum, void *data)
+		   unsigned int queuenum)
 {
 	int status = -EINVAL;
 	struct sk_buff *nskb;

net/ipv6/netfilter/ip6_queue.c

@@ -269,7 +269,7 @@ ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
 
 static int
 ipq_enqueue_packet(struct sk_buff *skb, struct nf_info *info,
-		   unsigned int queuenum, void *data)
+		   unsigned int queuenum)
 {
 	int status = -EINVAL;
 	struct sk_buff *nskb;

net/netfilter/nf_queue.c

@@ -153,7 +153,7 @@ static int __nf_queue(struct sk_buff *skb,
 	}
 #endif
 	afinfo->saveroute(skb, info);
-	status = qh->outfn(skb, info, queuenum, qh->data);
+	status = qh->outfn(skb, info, queuenum);
 
 	rcu_read_unlock();
 

net/netfilter/nfnetlink_queue.c

@@ -534,7 +534,7 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
 
 static int
 nfqnl_enqueue_packet(struct sk_buff *skb, struct nf_info *info,
-		     unsigned int queuenum, void *data)
+		     unsigned int queuenum)
 {
 	int status = -EINVAL;
 	struct sk_buff *nskb;