MODULE_DESCRIPTION("SIP NAT helper");
MODULE_ALIAS("ip_nat_sip");
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(format, args...)
-#endif
-
struct addr_map {
struct {
char src[sizeof("nnn.nnn.nnn.nnn:nnnnn")];
dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr);
datalen = (*pskb)->len - dataoff;
if (datalen < sizeof("SIP/2.0") - 1)
- return NF_DROP;
+ return NF_ACCEPT;
addr_map_init(ct, &map);
__be32 newip;
u_int16_t port;
- DEBUGP("ip_nat_sdp():\n");
-
/* Connection will come from reply */
- newip = ct->tuplehash[!dir].tuple.dst.u3.ip;
+ if (ct->tuplehash[dir].tuple.src.u3.ip ==
+ ct->tuplehash[!dir].tuple.dst.u3.ip)
+ newip = exp->tuple.dst.u3.ip;
+ else
+ newip = ct->tuplehash[!dir].tuple.dst.u3.ip;
exp->saved_ip = exp->tuple.dst.u3.ip;
exp->tuple.dst.u3.ip = newip;
/* Try to get same port: if not, try to change it. */
for (port = ntohs(exp->saved_proto.udp.port); port != 0; port++) {
exp->tuple.dst.u.udp.port = htons(port);
- if (nf_conntrack_expect_related(exp) == 0)
+ if (nf_ct_expect_related(exp) == 0)
break;
}
return NF_DROP;
if (!mangle_sdp(pskb, ctinfo, ct, newip, port, dptr)) {
- nf_conntrack_unexpect_related(exp);
+ nf_ct_unexpect_related(exp);
return NF_DROP;
}
return NF_ACCEPT;