[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@xxxxxxxxx>
---
commit 6601c07684fee94541f63c45456d2410f2e522a6
tree 77b2a3a8887d8571fee11645b167bfaea9a47128
parent 9e5fe442940e535b1839192dfde9ef67ae1a3042
author Patrick McHardy <kaber@xxxxxxxxx> Tue, 04 Dec 2007 10:48:25 +0100
committer Patrick McHardy <kaber@xxxxxxxxx> Tue, 04 Dec 2007 12:37:35 +0100
net/netfilter/nfnetlink_queue.c | 26 ++++++++++++--------------
1 files changed, 12 insertions(+), 14 deletions(-)
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index abd5ff9..6148a41 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -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 @@ nlmsg_failure:
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 @@ nla_put_failure:
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
-
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