diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2007-10-14 00:39:55 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-15 12:26:28 -0700 |
| commit | 2ca7b0ac022aa0158599178fe1056b1ba9ec8b97 (patch) | |
| tree | 6eece25447f0ec3b5d5f5533e49e10fde4d59f35 /net/ipv6 | |
| parent | af1e1cf073e3d038b7aac417a20585ecdcab7de6 (diff) | |
[NETFILTER]: Avoid skb_copy/pskb_copy/skb_realloc_headroom
This patch replaces unnecessary uses of skb_copy, pskb_copy and
skb_realloc_headroom by functions such as skb_make_writable and
pskb_expand_head.
This allows us to remove the double pointers later.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/netfilter/ip6_queue.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/net/ipv6/netfilter/ip6_queue.c b/net/ipv6/netfilter/ip6_queue.c index d7080dd475a..6413a30d9f6 100644 --- a/net/ipv6/netfilter/ip6_queue.c +++ b/net/ipv6/netfilter/ip6_queue.c @@ -332,6 +332,7 @@ static int ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e) { int diff; + int err; struct ipv6hdr *user_iph = (struct ipv6hdr *)v->payload; if (v->data_len < sizeof(*user_iph)) @@ -344,21 +345,14 @@ ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e) if (v->data_len > 0xFFFF) return -EINVAL; if (diff > skb_tailroom(e->skb)) { - struct sk_buff *newskb; - - newskb = skb_copy_expand(e->skb, - skb_headroom(e->skb), - diff, - GFP_ATOMIC); - if (newskb == NULL) { + err = pskb_expand_head(e->skb, 0, + diff - skb_tailroom(e->skb), + GFP_ATOMIC); + if (err) { printk(KERN_WARNING "ip6_queue: OOM " "in mangle, dropping packet\n"); - return -ENOMEM; + return err; } - if (e->skb->sk) - skb_set_owner_w(newskb, e->skb->sk); - kfree_skb(e->skb); - e->skb = newskb; } skb_put(e->skb, diff); } |