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Commit e02f7d16 authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
Browse files

[NETFILTER]: nf_queue: don't copy registered rerouter data 



Use the registered data structure instead of copying it.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 752c1f4c

net/netfilter/nf_queue.c

+9 −19
Original line number Diff line number Diff line
@@ -16,7 +16,7 @@ 
 * for queueing and must reinject all packets it receives, no matter what.

 */

static struct nf_queue_handler *queue_handler[NPROTO];

static struct nf_queue_rerouter *queue_rerouter;

static struct nf_queue_rerouter *queue_rerouter[NPROTO];



static DEFINE_RWLOCK(queue_handler_lock);
@@ -64,7 +64,7 @@ int nf_register_queue_rerouter(int pf, struct nf_queue_rerouter *rer) 
		return -EINVAL;



	write_lock_bh(&queue_handler_lock);

	memcpy(&queue_rerouter[pf], rer, sizeof(queue_rerouter[pf]));

	queue_rerouter[pf] = rer;

	write_unlock_bh(&queue_handler_lock);



	return 0;
@@ -77,7 +77,7 @@ int nf_unregister_queue_rerouter(int pf) 
		return -EINVAL;



	write_lock_bh(&queue_handler_lock);

	memset(&queue_rerouter[pf], 0, sizeof(queue_rerouter[pf]));

	queue_rerouter[pf] = NULL;

	write_unlock_bh(&queue_handler_lock);

	return 0;

}
@@ -123,7 +123,7 @@ int nf_queue(struct sk_buff **skb, 
		return 1;

	}



	info = kmalloc(sizeof(*info)+queue_rerouter[pf].rer_size, GFP_ATOMIC);

	info = kmalloc(sizeof(*info)+queue_rerouter[pf]->rer_size, GFP_ATOMIC);

	if (!info) {

		if (net_ratelimit())

			printk(KERN_ERR "OOM queueing packet %p\n",
@@ -155,14 +155,14 @@ int nf_queue(struct sk_buff **skb, 
		if (physoutdev) dev_hold(physoutdev);

	}

#endif

	if (queue_rerouter[pf].save)

		queue_rerouter[pf].save(*skb, info);

	if (queue_rerouter[pf]->save)

		queue_rerouter[pf]->save(*skb, info);



	status = queue_handler[pf]->outfn(*skb, info, queuenum,

					  queue_handler[pf]->data);



	if (status >= 0 && queue_rerouter[pf].reroute)

		status = queue_rerouter[pf].reroute(skb, info);

	if (status >= 0 && queue_rerouter[pf]->reroute)

		status = queue_rerouter[pf]->reroute(skb, info);



	read_unlock(&queue_handler_lock);
@@ -322,22 +322,12 @@ int __init netfilter_queue_init(void) 
{

#ifdef CONFIG_PROC_FS

	struct proc_dir_entry *pde;

#endif

	queue_rerouter = kmalloc(NPROTO * sizeof(struct nf_queue_rerouter),

				 GFP_KERNEL);

	if (!queue_rerouter)

		return -ENOMEM;



#ifdef CONFIG_PROC_FS

	pde = create_proc_entry("nf_queue", S_IRUGO, proc_net_netfilter);

	if (!pde) {

		kfree(queue_rerouter);

	if (!pde)

		return -1;

	}

	pde->proc_fops = &nfqueue_file_ops;

#endif

	memset(queue_rerouter, 0, NPROTO * sizeof(struct nf_queue_rerouter));



	return 0;

}