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[NETFILTER]: nf_conntrack/nf_nat: add H.323 helper port

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Add IPv4 and IPv6 capable nf_conntrack port of the H.323 conntrack/NAT helper.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2006-12-02 22:08:46 -08:00
committed by David S. Miller
parent 1695890057
commit f587de0e2f
15 changed files with 2600 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/netfilter/nf_conntrack_h323.h
+92
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@@ -0,0 +1,92 @@
#ifndef _NF_CONNTRACK_H323_H
#define _NF_CONNTRACK_H323_H
#ifdef __KERNEL__
#include <linux/netfilter/nf_conntrack_h323_asn1.h>
#define RAS_PORT 1719
#define Q931_PORT 1720
#define H323_RTP_CHANNEL_MAX 4 /* Audio, video, FAX and other */
/* This structure exists only once per master */
struct nf_ct_h323_master {
/* Original and NATed Q.931 or H.245 signal ports */
__be16 sig_port[IP_CT_DIR_MAX];
/* Original and NATed RTP ports */
__be16 rtp_port[H323_RTP_CHANNEL_MAX][IP_CT_DIR_MAX];
union {
/* RAS connection timeout */
u_int32_t timeout;
/* Next TPKT length (for separate TPKT header and data) */
u_int16_t tpkt_len[IP_CT_DIR_MAX];
};
};
struct nf_conn;
extern int get_h225_addr(struct nf_conn *ct, unsigned char *data,
TransportAddress *taddr,
union nf_conntrack_address *addr, __be16 *port);
extern void nf_conntrack_h245_expect(struct nf_conn *new,
struct nf_conntrack_expect *this);
extern void nf_conntrack_q931_expect(struct nf_conn *new,
struct nf_conntrack_expect *this);
extern int (*set_h245_addr_hook) (struct sk_buff **pskb,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
union nf_conntrack_address *addr,
__be16 port);
extern int (*set_h225_addr_hook) (struct sk_buff **pskb,
unsigned char **data, int dataoff,
TransportAddress *taddr,
union nf_conntrack_address *addr,
__be16 port);
extern int (*set_sig_addr_hook) (struct sk_buff **pskb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
TransportAddress *taddr, int count);
extern int (*set_ras_addr_hook) (struct sk_buff **pskb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data,
TransportAddress *taddr, int count);
extern int (*nat_rtp_rtcp_hook) (struct sk_buff **pskb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr,
__be16 port, __be16 rtp_port,
struct nf_conntrack_expect *rtp_exp,
struct nf_conntrack_expect *rtcp_exp);
extern int (*nat_t120_hook) (struct sk_buff **pskb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
H245_TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_h245_hook) (struct sk_buff **pskb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
TransportAddress *taddr, __be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_callforwarding_hook) (struct sk_buff **pskb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, int dataoff,
TransportAddress *taddr,
__be16 port,
struct nf_conntrack_expect *exp);
extern int (*nat_q931_hook) (struct sk_buff **pskb, struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
unsigned char **data, TransportAddress *taddr,
int idx, __be16 port,
struct nf_conntrack_expect *exp);
#endif
#endif
include/linux/netfilter_ipv4/ip_conntrack_helper_h323_asn1.h → include/linux/netfilter/nf_conntrack_h323_asn1.h
+5 -5
View File
@@ -1,6 +1,6 @@
/****************************************************************************
* ip_conntrack_helper_h323_asn1.h - BER and PER decoding library for H.323
* conntrack/NAT module.
* ip_conntrack_h323_asn1.h - BER and PER decoding library for H.323
* conntrack/NAT module.
*
* Copyright (c) 2006 by Jing Min Zhao <zhaojingmin@users.sourceforge.net>
*
@@ -34,13 +34,13 @@
*
****************************************************************************/
#ifndef _IP_CONNTRACK_HELPER_H323_ASN1_H_
#define _IP_CONNTRACK_HELPER_H323_ASN1_H_
#ifndef _NF_CONNTRACK_HELPER_H323_ASN1_H_
#define _NF_CONNTRACK_HELPER_H323_ASN1_H_
/*****************************************************************************
* H.323 Types
****************************************************************************/
#include "ip_conntrack_helper_h323_types.h"
#include "nf_conntrack_h323_types.h"
typedef struct {
enum {
include/linux/netfilter_ipv4/ip_conntrack_helper_h323_types.h → include/linux/netfilter/nf_conntrack_h323_types.h
+12
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@@ -10,6 +10,11 @@ typedef struct TransportAddress_ipAddress { /* SEQUENCE */
unsigned ip;
} TransportAddress_ipAddress;
typedef struct TransportAddress_ip6Address { /* SEQUENCE */
int options; /* No use */
unsigned ip6;
} TransportAddress_ip6Address;
typedef struct TransportAddress { /* CHOICE */
enum {
eTransportAddress_ipAddress,
@@ -22,6 +27,7 @@ typedef struct TransportAddress { /* CHOICE */
} choice;
union {
TransportAddress_ipAddress ipAddress;
TransportAddress_ip6Address ip6Address;
};
} TransportAddress;
@@ -93,6 +99,11 @@ typedef struct UnicastAddress_iPAddress { /* SEQUENCE */
unsigned network;
} UnicastAddress_iPAddress;
typedef struct UnicastAddress_iP6Address { /* SEQUENCE */
int options; /* No use */
unsigned network;
} UnicastAddress_iP6Address;
typedef struct UnicastAddress { /* CHOICE */
enum {
eUnicastAddress_iPAddress,
@@ -105,6 +116,7 @@ typedef struct UnicastAddress { /* CHOICE */
} choice;
union {
UnicastAddress_iPAddress iPAddress;
UnicastAddress_iP6Address iP6Address;
};
} UnicastAddress;
include/linux/netfilter_ipv4/Kbuild
-2
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@@ -1,6 +1,4 @@
header-y += ip_conntrack_helper.h
header-y += ip_conntrack_helper_h323_asn1.h
header-y += ip_conntrack_helper_h323_types.h
header-y += ip_conntrack_protocol.h
header-y += ip_conntrack_sctp.h
header-y += ip_conntrack_tcp.h
include/linux/netfilter_ipv4/ip_conntrack_h323.h
+1 -1
View File
@@ -3,7 +3,7 @@
#ifdef __KERNEL__
#include <linux/netfilter_ipv4/ip_conntrack_helper_h323_asn1.h>
#include <linux/netfilter/nf_conntrack_h323_asn1.h>
#define RAS_PORT 1719
#define Q931_PORT 1720