root/include/linux/netfilter/nf_conntrack_h323.h

INCLUDED FROM

#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_inet_addr *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 *skb,
                                  unsigned char **data, int dataoff,
                                  H245_TransportAddress *taddr,
                                  union nf_inet_addr *addr,
                                  __be16 port);
extern int (*set_h225_addr_hook) (struct sk_buff *skb,
                                  unsigned char **data, int dataoff,
                                  TransportAddress *taddr,
                                  union nf_inet_addr *addr,
                                  __be16 port);
extern int (*set_sig_addr_hook) (struct sk_buff *skb,
                                 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 *skb,
                                 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 *skb,
                                 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 *skb, 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 *skb, 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 *skb,
                                       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 *skb, 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