include/linux/netfilter/nf_conntrack_h323.h

   1 #ifndef _NF_CONNTRACK_H323_H
   2 #define _NF_CONNTRACK_H323_H
   3
   4 #ifdef __KERNEL__
   5
   6 #include <linux/netfilter/nf_conntrack_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 nf_ct_h323_master {
  14
  15         /* Original and NATed Q.931 or H.245 signal ports */
  16         __be16 sig_port[IP_CT_DIR_MAX];
  17
  18         /* Original and NATed RTP ports */
  19         __be16 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 nf_conn;
  31
  32 int get_h225_addr(struct nf_conn *ct, unsigned char *data,
  33                   TransportAddress *taddr, union nf_inet_addr *addr,
  34                   __be16 *port);
  35 void nf_conntrack_h245_expect(struct nf_conn *new,
  36                               struct nf_conntrack_expect *this);
  37 void nf_conntrack_q931_expect(struct nf_conn *new,
  38                               struct nf_conntrack_expect *this);
  39 extern int (*set_h245_addr_hook) (struct sk_buff *skb, unsigned int protoff,
  40                                   unsigned char **data, int dataoff,
  41                                   H245_TransportAddress *taddr,
  42                                   union nf_inet_addr *addr,
  43                                   __be16 port);
  44 extern int (*set_h225_addr_hook) (struct sk_buff *skb, unsigned int protoff,
  45                                   unsigned char **data, int dataoff,
  46                                   TransportAddress *taddr,
  47                                   union nf_inet_addr *addr,
  48                                   __be16 port);
  49 extern int (*set_sig_addr_hook) (struct sk_buff *skb,
  50                                  struct nf_conn *ct,
  51                                  enum ip_conntrack_info ctinfo,
  52                                  unsigned int protoff, unsigned char **data,
  53                                  TransportAddress *taddr, int count);
  54 extern int (*set_ras_addr_hook) (struct sk_buff *skb,
  55                                  struct nf_conn *ct,
  56                                  enum ip_conntrack_info ctinfo,
  57                                  unsigned int protoff, unsigned char **data,
  58                                  TransportAddress *taddr, int count);
  59 extern int (*nat_rtp_rtcp_hook) (struct sk_buff *skb,
  60                                  struct nf_conn *ct,
  61                                  enum ip_conntrack_info ctinfo,
  62                                  unsigned int protoff, unsigned char **data,
  63                                  int dataoff,
  64                                  H245_TransportAddress *taddr,
  65                                  __be16 port, __be16 rtp_port,
  66                                  struct nf_conntrack_expect *rtp_exp,
  67                                  struct nf_conntrack_expect *rtcp_exp);
  68 extern int (*nat_t120_hook) (struct sk_buff *skb, struct nf_conn *ct,
  69                              enum ip_conntrack_info ctinfo,
  70                              unsigned int protoff,
  71                              unsigned char **data, int dataoff,
  72                              H245_TransportAddress *taddr, __be16 port,
  73                              struct nf_conntrack_expect *exp);
  74 extern int (*nat_h245_hook) (struct sk_buff *skb, struct nf_conn *ct,
  75                              enum ip_conntrack_info ctinfo,
  76                              unsigned int protoff,
  77                              unsigned char **data, int dataoff,
  78                              TransportAddress *taddr, __be16 port,
  79                              struct nf_conntrack_expect *exp);
  80 extern int (*nat_callforwarding_hook) (struct sk_buff *skb,
  81                                        struct nf_conn *ct,
  82                                        enum ip_conntrack_info ctinfo,
  83                                        unsigned int protoff,
  84                                        unsigned char **data, int dataoff,
  85                                        TransportAddress *taddr,
  86                                        __be16 port,
  87                                        struct nf_conntrack_expect *exp);
  88 extern int (*nat_q931_hook) (struct sk_buff *skb, struct nf_conn *ct,
  89                              enum ip_conntrack_info ctinfo,
  90                              unsigned int protoff,
  91                              unsigned char **data, TransportAddress *taddr,
  92                              int idx, __be16 port,
  93                              struct nf_conntrack_expect *exp);
  94
  95 #endif
  96
  97 #endif