/*
 * ecp.h
 *
 * Written by Archie Cobbs <archie@freebsd.org>
 * Copyright (c) 1998-1999 Whistle Communications, Inc. All rights reserved.
 * See ``COPYRIGHT.whistle''
 */

#ifndef _ECP_H_
#define	_ECP_H_

#include "defs.h"
#include "fsm.h"
#include "mbuf.h"
#include "encrypt.h"
#include "command.h"

#ifdef ECP_DES
#include "ecp_dese.h"
#include "ecp_dese_bis.h"
#endif

/*
 * DEFINITIONS
 */

  #define ECP_DIR_XMIT		1
  #define ECP_DIR_RECV		2

/* Encryption types */

  #define ECP_TY_OUI		0
  #define ECP_TY_DESE		1
  #define ECP_TY_3DESE		2
  #define ECP_TY_DESE_bis	3

/* Max supported key length */

  #define ECP_MAX_KEY	32

/* ECP state */

  struct ecpstate
  {
    char		key[ECP_MAX_KEY];	/* Encryption key */
    EncType		xmit;		/* Xmit encryption type */
    EncType		recv;		/* Recv encryption type */
    uint32_t		self_reject;
    uint32_t		peer_reject;
    struct fsm		fsm;		/* PPP FSM */
    struct optinfo	options;	/* Configured options */
#ifdef ECP_DES
    struct desinfo	des;		/* DESE info */
    struct desebisinfo	desebis;	/* DESE-bis info */
#endif
    uint32_t		xmit_resets;	/* Number of ResetReq we have got from other side */
    uint32_t		recv_resets;	/* Number of ResetReq we have sent to other side */
  };
  typedef struct ecpstate	*EcpState;

/*
 * VARIABLES
 */

  extern const struct cmdtab	EcpSetCmds[];

  extern int		gEcpCsock;		/* Socket node control socket */
  extern int		gEcpDsock;		/* Socket node data socket */

/*
 * FUNCTIONS
 */

  extern void	EcpInit(Bund b);
  extern void	EcpInst(Bund b, Bund bt);
  extern void	EcpUp(Bund b);
  extern void	EcpDown(Bund b);
  extern void	EcpOpen(Bund b);
  extern void	EcpClose(Bund b);
  extern int	EcpOpenCmd(Context ctx);
  extern int	EcpCloseCmd(Context ctx);
  extern int	EcpSubtractBloat(Bund b, int size);
  extern void	EcpInput(Bund b, Mbuf bp);
  extern Mbuf	EcpDataInput(Bund b, Mbuf bp);
  extern Mbuf	EcpDataOutput(Bund b, Mbuf bp);
  extern void	EcpSendResetReq(Fsm fp);
  extern int	EcpStat(Context ctx, int ac, const char *const av[], const void *arg);

  extern int	EcpsInit(void);
  extern void	EcpsShutdown(void);

#endif