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authorPatrick McHardy <kaber@trash.net>2011-12-23 14:01:26 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2011-12-23 14:36:46 +0100
commit0af051baa8444b7453235552911a353fc7b9bee7 (patch)
tree7eb7a0f34679385d2519e4adf6120c6f779a8336 /net
parent40cfb706cda2bacdecd6e5ab78a21456d28878c7 (diff)
downloadblackbird-op-linux-0af051baa8444b7453235552911a353fc7b9bee7.tar.gz
blackbird-op-linux-0af051baa8444b7453235552911a353fc7b9bee7.zip
netfilter: nf_nat: remove obsolete check in nf_nat_mangle_udp_packet()
The packet size check originates from a time when UDP helpers could accidentally mangle incorrect packets (NEWNAT) and is unnecessary nowadays since the conntrack helpers invoke the NAT helpers for the proper packet directly. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/netfilter/nf_nat_helper.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/net/ipv4/netfilter/nf_nat_helper.c b/net/ipv4/netfilter/nf_nat_helper.c
index 049e8b7c3188..af65958f6308 100644
--- a/net/ipv4/netfilter/nf_nat_helper.c
+++ b/net/ipv4/netfilter/nf_nat_helper.c
@@ -253,12 +253,6 @@ nf_nat_mangle_udp_packet(struct sk_buff *skb,
struct udphdr *udph;
int datalen, oldlen;
- /* UDP helpers might accidentally mangle the wrong packet */
- iph = ip_hdr(skb);
- if (skb->len < iph->ihl*4 + sizeof(*udph) +
- match_offset + match_len)
- return 0;
-
if (!skb_make_writable(skb, skb->len))
return 0;
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