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authorMarcus Sundberg <marcus@ingate.com>2005-12-12 15:02:48 -0800
committerDavid S. Miller <davem@davemloft.net>2005-12-12 15:02:48 -0800
commit2f9616d4c44349c903bc1b54fe46ab0ce0210b74 (patch)
treea26737c50950261b92d9cc948d7e29053f30466e /net
parent66e05225262cd9271fac13fe2fd1e9edb65e3978 (diff)
[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>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/netfilter/ip_nat_tftp.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/netfilter/ip_nat_tftp.c b/net/ipv4/netfilter/ip_nat_tftp.c
index 2215317c76b7..43c3bd7c118e 100644
--- a/net/ipv4/netfilter/ip_nat_tftp.c
+++ b/net/ipv4/netfilter/ip_nat_tftp.c
@@ -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)