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[NETFILTER]: nf_conntrack_sip: create signalling expectations

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Create expectations for incoming signalling connections when seeing
a REGISTER request. This is needed when the registrar uses a
different source port number for signalling messages and for receiving
incoming calls from other endpoints than the registrar.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2008-03-25 20:25:13 -07:00
committed by David S. Miller
parent c978cd3a93
commit 0f32a40fc9
4 changed files with 332 additions and 33 deletions
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4
include/net/netfilter/nf_conntrack.h
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@@ -46,6 +46,7 @@ union nf_conntrack_expect_proto {
#include <linux/netfilter/nf_conntrack_pptp.h>
#include <linux/netfilter/nf_conntrack_h323.h>
#include <linux/netfilter/nf_conntrack_sane.h>
#include <linux/netfilter/nf_conntrack_sip.h>
/* per conntrack: application helper private data */
union nf_conntrack_help {
@@ -54,6 +55,7 @@ union nf_conntrack_help {
struct nf_ct_pptp_master ct_pptp_info;
struct nf_ct_h323_master ct_h323_info;
struct nf_ct_sane_master ct_sane_info;
struct nf_ct_sip_master ct_sip_info;
};
#include <linux/types.h>
@@ -76,7 +78,7 @@ do { \
struct nf_conntrack_helper;
/* Must be kept in sync with the classes defined by helpers */
#define NF_CT_MAX_EXPECT_CLASSES 1
#define NF_CT_MAX_EXPECT_CLASSES 2
/* nf_conn feature for connections that have a helper */
struct nf_conn_help {