release/src/router/xl2tpd/control.h

   1 /*
   2  * Layer Two Tunnelling Protocol Daemon
   3  * Copyright (C) 1998 Adtran, Inc.
   4  * Copyright (C) 2002 Jeff McAdams
   5  *
   6  * Mark Spencer
   7  *
   8  * This software is distributed under the terms
   9  * of the GPL, which you should have received
  10  * along with this source.
  11  *
  12  * Control Packet Handling header
  13  *
  14  */
  15
  16 #include "common.h"
  17
  18 /* Declaration of FIFO used for maintaining
  19    a reliable control connection, as well
  20    as for queueing stuff for the individual
  21    threads */
  22 #ifndef _CONTROL_H
  23 #define _CONTROL_H
  24 /* Control message types  for vendor-ID 0, placed in the VALUE
  25    field of AVP requests */
  26
  27 /* Control Connection Management */
  28 #define SCCRQ   1               /* Start-Control-Connection-Request */
  29 #define SCCRP   2               /* Start-Control-Connection-Reply */
  30 #define SCCCN   3               /* Start-Control-Connection-Connected */
  31 #define StopCCN 4               /* Stop-Control-Connection-Notification */
  32 /* 5 is reserved */
  33 #define Hello   6               /* Hello */
  34 /* Call Management */
  35 #define OCRQ    7               /* Outgoing-Call-Request */
  36 #define OCRP    8               /* Outgoing-Call-Reply */
  37 #define OCCN    9               /* Outgoing-Call-Connected */
  38 #define ICRQ    10              /* Incoming-Call-Request */
  39 #define ICRP    11              /* Incoming-Call-Reply */
  40 #define ICCN    12              /* Incoming-Call-Connected */
  41 /* 13 is reserved */
  42 #define CDN     14              /* Call-Disconnect-Notify */
  43 /* Error Reporting */
  44 #define WEN     15              /* WAN-Error-Notify */
  45 /* PPP Sesssion Control */
  46 #define SLI     16              /* Set-Link-Info */
  47
  48 #define MAX_MSG 16
  49
  50 #define TBIT 0x8000
  51 #define LBIT 0x4000
  52 #define RBIT 0x2000
  53 #define FBIT 0x0800
  54
  55 extern int handle_packet (struct buffer *, struct tunnel *, struct call *);
  56 extern struct buffer *new_outgoing (struct tunnel *);
  57 extern void add_control_hdr (struct tunnel *t, struct call *c,
  58                              struct buffer *);
  59 extern int control_finish (struct tunnel *t, struct call *c);
  60 extern void control_zlb (struct buffer *, struct tunnel *, struct call *);
  61 extern void recycle_outgoing (struct buffer *, struct sockaddr_in);
  62 extern void handle_special (struct buffer *, struct call *, _u16);
  63 extern void hello (void *);
  64 extern void send_zlb (void *);
  65 extern void dethrottle (void *);
  66
  67 #endif