1 /*
2 * CAPI encode/decode prototypes and defines
3 *
4 * Copyright (C) 1996 Universidade de Lisboa
5 *
6 * Written by Pedro Roque Marques (roque@di.fc.ul.pt)
7 *
8 * This software may be used and distributed according to the terms of
9 * the GNU General Public License, incorporated herein by reference.
10 */
11
12 #ifndef CAPI_H
13 #define CAPI_H
14
15
16 #define REQ_CAUSE 0x01
17 #define REQ_DISPLAY 0x04
18 #define REQ_USER_TO_USER 0x08
19
20 #define AppInfoMask (REQ_CAUSE | REQ_DISPLAY | REQ_USER_TO_USER)
21
22 /* Connection Setup */
23 extern int capi_conn_req(const char *calledPN, struct sk_buff **buf,
24 int proto);
25 extern int capi_decode_conn_conf(struct pcbit_chan *chan, struct sk_buff *skb,
26 int *complete);
27
28 extern int capi_decode_conn_ind(struct pcbit_chan *chan, struct sk_buff *skb,
29 struct callb_data *info);
30 extern int capi_conn_resp(struct pcbit_chan *chan, struct sk_buff **skb);
31
32 extern int capi_conn_active_req(struct pcbit_chan *chan, struct sk_buff **skb);
33 extern int capi_decode_conn_actv_conf(struct pcbit_chan *chan,
34 struct sk_buff *skb);
35
36 extern int capi_decode_conn_actv_ind(struct pcbit_chan *chan,
37 struct sk_buff *skb);
38 extern int capi_conn_active_resp(struct pcbit_chan *chan,
39 struct sk_buff **skb);
40
41 /* Data */
42 extern int capi_select_proto_req(struct pcbit_chan *chan, struct sk_buff **skb,
43 int outgoing);
44 extern int capi_decode_sel_proto_conf(struct pcbit_chan *chan,
45 struct sk_buff *skb);
46
47 extern int capi_activate_transp_req(struct pcbit_chan *chan,
48 struct sk_buff **skb);
49 extern int capi_decode_actv_trans_conf(struct pcbit_chan *chan,
50 struct sk_buff *skb);
51
52 extern int capi_tdata_req(struct pcbit_chan *chan, struct sk_buff *skb);
53 extern int capi_tdata_resp(struct pcbit_chan *chan, struct sk_buff **skb);
54
55 /* Connection Termination */
56 extern int capi_disc_req(ushort callref, struct sk_buff **skb, u_char cause);
57
58 extern int capi_decode_disc_ind(struct pcbit_chan *chan, struct sk_buff *skb);
59 extern int capi_disc_resp(struct pcbit_chan *chan, struct sk_buff **skb);
60
61 #ifdef DEBUG
62 extern int capi_decode_debug_188(u_char *hdr, ushort hdrlen);
63 #endif
64
65 static inline struct pcbit_chan *
capi_channel(struct pcbit_dev * dev,struct sk_buff * skb)66 capi_channel(struct pcbit_dev *dev, struct sk_buff *skb)
67 {
68 ushort callref;
69
70 callref = *((ushort *)skb->data);
71 skb_pull(skb, 2);
72
73 if (dev->b1->callref == callref)
74 return dev->b1;
75 else if (dev->b2->callref == callref)
76 return dev->b2;
77
78 return NULL;
79 }
80
81 #endif
82