include/linux/netfilter_ipv4/ip_conntrack_h323.h

   1 #ifndef _IP_CONNTRACK_H323_H
   2 #define _IP_CONNTRACK_H323_H
   3
   4 #ifdef __KERNEL__
   5
   6 #include <linux/netfilter_ipv4/ip_conntrack_helper_h323_asn1.h>
   7
   8 #define RAS_PORT 1719
   9 #define Q931_PORT 1720
  10 #define H323_RTP_CHANNEL_MAX 4  /* Audio, video, FAX and other */
  11
  12 /* This structure exists only once per master */
  13 struct ip_ct_h323_master {
  14
  15         /* Original and NATed Q.931 or H.245 signal ports */
  16         u_int16_t sig_port[IP_CT_DIR_MAX];
  17
  18         /* Original and NATed RTP ports */
  19         u_int16_t rtp_port[H323_RTP_CHANNEL_MAX][IP_CT_DIR_MAX];
  20
  21         union {
  22                 /* RAS connection timeout */
  23                 u_int32_t timeout;
  24
  25                 /* Next TPKT length (for separate TPKT header and data) */
  26                 u_int16_t tpkt_len[IP_CT_DIR_MAX];
  27         };
  28 };
  29
  30 struct ip_conntrack_expect;
  31
  32 extern int get_h225_addr(unsigned char *data, TransportAddress * addr,
  33                          u_int32_t * ip, u_int16_t * port);
  34 extern void ip_conntrack_h245_expect(struct ip_conntrack *new,
  35                                      struct ip_conntrack_expect *this);
  36 extern void ip_conntrack_q931_expect(struct ip_conntrack *new,
  37                                      struct ip_conntrack_expect *this);
  38 extern int (*set_h245_addr_hook) (struct sk_buff ** pskb,
  39                                   unsigned char **data, int dataoff,
  40                                   H245_TransportAddress * addr,
  41                                   u_int32_t ip, u_int16_t port);
  42 extern int (*set_h225_addr_hook) (struct sk_buff ** pskb,
  43                                   unsigned char **data, int dataoff,
  44                                   TransportAddress * addr,
  45                                   u_int32_t ip, u_int16_t port);
  46 extern int (*set_sig_addr_hook) (struct sk_buff ** pskb,
  47                                  struct ip_conntrack * ct,
  48                                  enum ip_conntrack_info ctinfo,
  49                                  unsigned char **data,
  50                                  TransportAddress * addr, int count);
  51 extern int (*set_ras_addr_hook) (struct sk_buff ** pskb,
  52                                  struct ip_conntrack * ct,
  53                                  enum ip_conntrack_info ctinfo,
  54                                  unsigned char **data,
  55                                  TransportAddress * addr, int count);
  56 extern int (*nat_rtp_rtcp_hook) (struct sk_buff ** pskb,
  57                                  struct ip_conntrack * ct,
  58                                  enum ip_conntrack_info ctinfo,
  59                                  unsigned char **data, int dataoff,
  60                                  H245_TransportAddress * addr,
  61                                  u_int16_t port, u_int16_t rtp_port,
  62                                  struct ip_conntrack_expect * rtp_exp,
  63                                  struct ip_conntrack_expect * rtcp_exp);
  64 extern int (*nat_t120_hook) (struct sk_buff ** pskb, struct ip_conntrack * ct,
  65                              enum ip_conntrack_info ctinfo,
  66                              unsigned char **data, int dataoff,
  67                              H245_TransportAddress * addr, u_int16_t port,
  68                              struct ip_conntrack_expect * exp);
  69 extern int (*nat_h245_hook) (struct sk_buff ** pskb, struct ip_conntrack * ct,
  70                              enum ip_conntrack_info ctinfo,
  71                              unsigned char **data, int dataoff,
  72                              TransportAddress * addr, u_int16_t port,
  73                              struct ip_conntrack_expect * exp);
  74 extern int (*nat_q931_hook) (struct sk_buff ** pskb, struct ip_conntrack * ct,
  75                              enum ip_conntrack_info ctinfo,
  76                              unsigned char **data, TransportAddress * addr,
  77                              int idx, u_int16_t port,
  78                              struct ip_conntrack_expect * exp);
  79
  80 #endif
  81
  82 #endif