#ifndef _LINUX_ISDN_PPP_H
#define _LINUX_ISDN_PPP_H


#define CALLTYPE_INCOMING 0x1
#define CALLTYPE_OUTGOING 0x2
#define CALLTYPE_CALLBACK 0x4

struct pppcallinfo
{
	int calltype;
	unsigned char local_num[64];
	unsigned char remote_num[64];
	int charge_units;
};

#define PPPIOCGCALLINFO _IOWR('t',128,struct pppcallinfo)
#define PPPIOCBUNDLE   _IOW('t',129,int)
#define PPPIOCGMPFLAGS _IOR('t',130,int)
#define PPPIOCSMPFLAGS _IOW('t',131,int)
#define PPPIOCSMPMTU   _IOW('t',132,int)
#define PPPIOCSMPMRU   _IOW('t',133,int)
#define PPPIOCGCOMPRESSORS _IOR('t',134,unsigned long [8])
#define PPPIOCSCOMPRESSOR _IOW('t',135,int)
#define PPPIOCGIFNAME      _IOR('t',136, char [IFNAMSIZ] )

#define PPP_MP          0x003d
#define PPP_LINK_COMP   0x00fb
#define PPP_LINK_CCP    0x80fb

#define SC_MP_PROT       0x00000200
#define SC_REJ_MP_PROT   0x00000400
#define SC_OUT_SHORT_SEQ 0x00000800
#define SC_IN_SHORT_SEQ  0x00004000

#define SC_DECOMP_ON		0x01
#define SC_COMP_ON		0x02
#define SC_DECOMP_DISCARD	0x04
#define SC_COMP_DISCARD		0x08
#define SC_LINK_DECOMP_ON	0x10
#define SC_LINK_COMP_ON		0x20
#define SC_LINK_DECOMP_DISCARD	0x40
#define SC_LINK_COMP_DISCARD	0x80

#define DECOMP_ERR_NOMEM	(-10)

#define MP_END_FRAG    0x40
#define MP_BEGIN_FRAG  0x80

#define ISDN_PPP_COMP_MAX_OPTIONS 16

#define IPPP_COMP_FLAG_XMIT 0x1
#define IPPP_COMP_FLAG_LINK 0x2

struct isdn_ppp_comp_data {
        int num;
        unsigned char options[ISDN_PPP_COMP_MAX_OPTIONS];
        int optlen;
        int flags;
};

#ifdef __KERNEL__

/*
 * this is an 'old friend' from ppp-comp.h under a new name 
 * check the original include for more information
 */
struct isdn_ppp_compressor {
	struct isdn_ppp_compressor *next,*prev;
	int num; /* CCP compression protocol number */
	void *(*alloc) (struct isdn_ppp_comp_data *);
	void (*free) (void *state);
	int  (*init) (void *state, struct isdn_ppp_comp_data *,int unit,int debug);
	void (*reset) (void *state);
	int  (*compress) (void *state,struct sk_buff *in, struct sk_buff *skb_out, int proto);
	int  (*decompress) (void *state,struct sk_buff *in, struct sk_buff *skb_out);
	void (*incomp) (void *state, struct sk_buff *in,int proto);
	void (*stat) (void *state, struct compstat *stats);
};

extern int isdn_ppp_register_compressor(struct isdn_ppp_compressor *);
extern int isdn_ppp_unregister_compressor(struct isdn_ppp_compressor *);
extern int isdn_ppp_dial_slave(char *);
extern int isdn_ppp_hangup_slave(char *);

struct ippp_bundle {
  int mp_mrru;                        /* unused                             */
  struct mpqueue *last;               /* currently defined in isdn_net_dev  */
  int min;                            /* currently calculated 'on the fly'  */
  long next_num;                      /* we wanna see this seq.-number next */
  struct sqqueue *sq;
  int modify:1;                       /* set to 1 while modifying sqqueue   */
  int bundled:1;                      /* bundle active ?                    */
};

#define NUM_RCV_BUFFS     64

struct sqqueue {
  struct sqqueue *next;
  long sqno_start;
  long sqno_end;
  struct sk_buff *skb;
  long timer;
};

struct mpqueue {
  struct mpqueue *next;
  struct mpqueue *last;
  long sqno;
  struct sk_buff *skb;
  int BEbyte;
  unsigned long time;
};

struct ippp_buf_queue {
  struct ippp_buf_queue *next;
  struct ippp_buf_queue *last;
  char *buf;                 /* NULL here indicates end of queue */
  int len;
};

struct ippp_struct {
  struct ippp_struct *next_link;
  int state;
  struct ippp_buf_queue rq[NUM_RCV_BUFFS]; /* packet queue for isdn_ppp_read() */
  struct ippp_buf_queue *first;  /* pointer to (current) first packet */
  struct ippp_buf_queue *last;   /* pointer to (current) last used packet in queue */
  struct wait_queue *wq;
  struct task_struct *tk;
  unsigned int mpppcfg;
  unsigned int pppcfg;
  unsigned int mru;
  unsigned int mpmru;
  unsigned int mpmtu;
  unsigned int maxcid;
  struct isdn_net_local_s *lp;
  int unit;
  int minor;
  long last_link_seqno;
  long mp_seqno;
  long range;
#ifdef CONFIG_ISDN_PPP_VJ
  unsigned char *cbuf;
  struct slcompress *slcomp;
#endif
  unsigned long debug;
  struct isdn_ppp_compressor *compressor,*decompressor;
  struct isdn_ppp_compressor *link_compressor,*link_decompressor;
  void *decomp_stat,*comp_stat,*link_decomp_stat,*link_comp_stat;
  unsigned long compflags;
};

#endif /* __KERNEL__ */

#endif /* _LINUX_ISDN_PPP_H */