drivers/isdn/pcbit/capi.h

   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 *
  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