• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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
98