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/ipv4/netfilter/arpt_mangle.c | |
| parent | [IPVS]: Replace local version of skb_make_writable (diff) | |
| download | linux-dev-2ca7b0ac022aa0158599178fe1056b1ba9ec8b97.tar.xz linux-dev-2ca7b0ac022aa0158599178fe1056b1ba9ec8b97.zip | |
[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/ipv4/netfilter/arpt_mangle.c')
| -rw-r--r-- | net/ipv4/netfilter/arpt_mangle.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/net/ipv4/netfilter/arpt_mangle.c b/net/ipv4/netfilter/arpt_mangle.c index c4bdab47597f..0181f919a79c 100644 --- a/net/ipv4/netfilter/arpt_mangle.c +++ b/net/ipv4/netfilter/arpt_mangle.c @@ -1,5 +1,6 @@ /* module that allows mangling of the arp payload */ #include <linux/module.h> +#include <linux/netfilter.h> #include <linux/netfilter_arp/arpt_mangle.h> #include <net/sock.h> @@ -18,17 +19,8 @@ target(struct sk_buff **pskb, unsigned char *arpptr; int pln, hln; - if (skb_shared(*pskb) || skb_cloned(*pskb)) { - struct sk_buff *nskb; - - nskb = skb_copy(*pskb, GFP_ATOMIC); - if (!nskb) - return NF_DROP; - if ((*pskb)->sk) - skb_set_owner_w(nskb, (*pskb)->sk); - kfree_skb(*pskb); - *pskb = nskb; - } + if (skb_make_writable(*pskb, (*pskb)->len)) + return NF_DROP; arp = arp_hdr(*pskb); arpptr = skb_network_header(*pskb) + sizeof(*arp); |