netfilter: Fix SIP conntrack build with NAT disabled.

Reported by Ingo Molnar.

The SIP helper is also useful without NAT. This patch adds an ifdef
around the RTP call optimization for NATed clients.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 65b3ba57a3b7b639fef7c9850afe236bd4a0af53..9f4900069561547772d04ca232f36f720605fcee 100644 (file)
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -781,7 +781,7 @@ static int set_expected_rtp_rtcp(struct sk_buff *skb,
                    nfct_help(exp->master)->helper != nfct_help(ct)->helper ||
                    exp->class != class)
                        break;
-
+#ifdef CONFIG_NF_NAT_NEEDED
                if (exp->tuple.src.l3num == AF_INET && !direct_rtp &&
                    (exp->saved_ip != exp->tuple.dst.u3.ip ||
                     exp->saved_proto.udp.port != exp->tuple.dst.u.udp.port) &&
@@ -791,6 +791,7 @@ static int set_expected_rtp_rtcp(struct sk_buff *skb,
                        tuple.dst.u.udp.port    = exp->saved_proto.udp.port;
                        direct_rtp = 1;
                } else
+#endif
                        skip_expect = 1;
        } while (!skip_expect);
        rcu_read_unlock();