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authorHerbert Xu <herbert@gondor.apana.org.au>2007-10-14 00:39:55 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-15 12:26:28 -0700
commit2ca7b0ac022aa0158599178fe1056b1ba9ec8b97 (patch)
tree6eece25447f0ec3b5d5f5533e49e10fde4d59f35 /net/netfilter/xt_TCPMSS.c
parentaf1e1cf073e3d038b7aac417a20585ecdcab7de6 (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/netfilter/xt_TCPMSS.c')
-rw-r--r--net/netfilter/xt_TCPMSS.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c
index 31b6f9d09822..f111edf5f775 100644
--- a/net/netfilter/xt_TCPMSS.c
+++ b/net/netfilter/xt_TCPMSS.c
@@ -105,14 +105,10 @@ tcpmss_mangle_packet(struct sk_buff **pskb,
* MSS Option not found ?! add it..
*/
if (skb_tailroom((*pskb)) < TCPOLEN_MSS) {
- struct sk_buff *newskb;
-
- newskb = skb_copy_expand(*pskb, skb_headroom(*pskb),
- TCPOLEN_MSS, GFP_ATOMIC);
- if (!newskb)
+ if (pskb_expand_head(*pskb, 0,
+ TCPOLEN_MSS - skb_tailroom(*pskb),
+ GFP_ATOMIC))
return -1;
- kfree_skb(*pskb);
- *pskb = newskb;
tcph = (struct tcphdr *)(skb_network_header(*pskb) + tcphoff);
}