/* $Id: isdn_divertif.h,v 1.4.6.1 2001/09/23 22:25:05 kai Exp $
   *
   * Header for the diversion supplementary interface for i4l.
   *
   * Author    Werner Cornelius (werner@titro.de)
   * Copyright by Werner Cornelius (werner@titro.de)
   *
   * This software may be used and distributed according to the terms
   * of the GNU General Public License, incorporated herein by reference.
   *
   */

  #ifndef _LINUX_ISDN_DIVERTIF_H
  #define _LINUX_ISDN_DIVERTIF_H

  
  /***********************************************************/
  /* magic value is also used to control version information */
  /***********************************************************/
  #define DIVERT_IF_MAGIC 0x25873401
  #define DIVERT_CMD_REG  0x00  /* register command */
  #define DIVERT_CMD_REL  0x01  /* release command */
  #define DIVERT_NO_ERR   0x00  /* return value no error */
  #define DIVERT_CMD_ERR  0x01  /* invalid cmd */
  #define DIVERT_VER_ERR  0x02  /* magic/version invalid */
  #define DIVERT_REG_ERR  0x03  /* module already registered */
  #define DIVERT_REL_ERR  0x04  /* module not registered */
  #define DIVERT_REG_NAME isdn_register_divert

  #ifdef __KERNEL__
  #include <linux/isdnif.h>
  #include <linux/types.h>

  /***************************************************************/
  /* structure exchanging data between isdn hl and divert module */
  /***************************************************************/ 
  typedef struct
    { ulong if_magic; /* magic info and version */
      int cmd; /* command */
      int (*stat_callback)(isdn_ctrl *); /* supplied by divert module when calling */
      int (*ll_cmd)(isdn_ctrl *); /* supplied by hl on return */
      char * (*drv_to_name)(int); /* map a driver id to name, supplied by hl */
      int (*name_to_drv)(char *); /* map a driver id to name, supplied by hl */
    } isdn_divert_if;
  
  /*********************/
  /* function register */
  /*********************/
  extern int DIVERT_REG_NAME(isdn_divert_if *);

  #endif

  
  #endif /* _LINUX_ISDN_DIVERTIF_H */