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[NETFILTER]: nfnetlink_queue: remove useless enqueue status codes 

The queueing core doesn't care about the exact return value from
the queue handler, so there's no need to go through the trouble
of returning a meaningful value as long as we indicate an error.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-12-05 01:31:01 -08:00 committed by David S. Miller
parent 861934c7c8
commit 0ef0f46580
1 changed files with 12 additions and 14 deletions
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26
net/netfilter/nfnetlink_queue.c
View File

@ -203,7 +203,7 @@ nfqnl_flush(struct nfqnl_instance *queue, nfqnl_cmpfn cmpfn, unsigned long data)
static struct sk_buff *
nfqnl_build_packet_message(struct nfqnl_instance *queue,
struct nf_queue_entry *entry, int *errp)
struct nf_queue_entry *entry)
{
sk_buff_data_t old_tail;
size_t size;
@ -241,7 +241,7 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
case NFQNL_COPY_PACKET:
if ((entskb->ip_summed == CHECKSUM_PARTIAL ||
entskb->ip_summed == CHECKSUM_COMPLETE) &&
(*errp = skb_checksum_help(entskb))) {
skb_checksum_help(entskb)) {
spin_unlock_bh(&queue->lock);
return NULL;
}
@ -374,7 +374,6 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
nla_put_failure:
if (skb)
kfree_skb(skb);
*errp = -EINVAL;
if (net_ratelimit())
printk(KERN_ERR "nf_queue: error creating packet message\n");
return NULL;
@ -383,21 +382,21 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
static int
nfqnl_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
{
int status = -EINVAL;
struct sk_buff *nskb;
struct nfqnl_instance *queue;
int err;
/* rcu_read_lock()ed by nf_hook_slow() */
queue = instance_lookup(queuenum);
if (!queue)
return -EINVAL;
goto err_out;
if (queue->copy_mode == NFQNL_COPY_NONE)
return -EAGAIN;
goto err_out;
nskb = nfqnl_build_packet_message(queue, entry, &status);
nskb = nfqnl_build_packet_message(queue, entry);
if (nskb == NULL)
return status;
goto err_out;
spin_lock_bh(&queue->lock);
@ -406,7 +405,6 @@ nfqnl_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
if (queue->queue_total >= queue->queue_maxlen) {
queue->queue_dropped++;
status = -ENOSPC;
if (net_ratelimit())
printk(KERN_WARNING "nf_queue: full at %d entries, "
"dropping packets(s). Dropped: %d\n",
@ -415,8 +413,8 @@ nfqnl_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
}
/* nfnetlink_unicast will either free the nskb or add it to a socket */
status = nfnetlink_unicast(nskb, queue->peer_pid, MSG_DONTWAIT);
if (status < 0) {
err = nfnetlink_unicast(nskb, queue->peer_pid, MSG_DONTWAIT);
if (err < 0) {
queue->queue_user_dropped++;
goto err_out_unlock;
}
@ -424,14 +422,14 @@ nfqnl_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
__enqueue_entry(queue, entry);
spin_unlock_bh(&queue->lock);
return status;
return 0;
err_out_free_nskb:
kfree_skb(nskb);
err_out_unlock:
spin_unlock_bh(&queue->lock);
return status;
err_out:
return -1;
}
static int