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[NETFILTER]: ip_nat_tftp: Fix expectation NAT 

When a TFTP client is SNATed so that the port is also changed, the
port is never changed back for the expected connection.

Signed-off-by: Marcus Sundberg <marcus@ingate.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Marcus Sundberg 2005-12-12 15:02:48 -08:00 committed by David S. Miller
parent 66e0522526
commit 2f9616d4c4
1 changed files with 4 additions and 1 deletions
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5
net/ipv4/netfilter/ip_nat_tftp.c
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@ -42,7 +42,10 @@ static unsigned int help(struct sk_buff **pskb,
enum ip_conntrack_info ctinfo,
struct ip_conntrack_expect *exp)
{
exp->saved_proto.udp.port = exp->tuple.dst.u.tcp.port;
struct ip_conntrack *ct = exp->master;
exp->saved_proto.udp.port
= ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.udp.port;
exp->dir = IP_CT_DIR_REPLY;
exp->expectfn = ip_nat_follow_master;
if (ip_conntrack_expect_related(exp) != 0)