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/* Linux ISDN subsystem, sync PPP, interface to ipppd
*
* Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de)
* Copyright 1995,96 Thinking Objects Software GmbH Wuerzburg
* Copyright 1995,96 by Michael Hipp (Michael.Hipp@student.uni-tuebingen.de)
* Copyright 2000-2002 by Kai Germaschewski (kai@germaschewski.name)
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#ifndef _LINUX_ISDN_PPP_H
#define _LINUX_ISDN_PPP_H
#define CALLTYPE_INCOMING 0x1
#define CALLTYPE_OUTGOING 0x2
#define CALLTYPE_CALLBACK 0x4
#define IPPP_VERSION "2.2.0"
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 SC_MP_PROT 0x00000200
#define SC_REJ_MP_PROT 0x00000400
#define SC_OUT_SHORT_SEQ 0x00000800
#define SC_IN_SHORT_SEQ 0x00004000
#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__
#include <linux/skbuff.h>
#include <linux/ppp_defs.h>
#define DECOMP_ERR_NOMEM (-10)
/*
* We need a way for the decompressor to influence the generation of CCP
* Reset-Requests in a variety of ways. The decompressor is already returning
* a lot of information (generated skb length, error conditions) so we use
* another parameter. This parameter is a pointer to a structure which is
* to be marked valid by the decompressor and only in this case is ever used.
* Furthermore, the only case where this data is used is when the decom-
* pressor returns DECOMP_ERROR.
*
* We use this same struct for the reset entry of the compressor to commu-
* nicate to its caller how to deal with sending of a Reset Ack. In this
* case, expra is not used, but other options still apply (suppressing
* sending with rsend, appending arbitrary data, etc).
*/
#define IPPP_RESET_MAXDATABYTES 32
struct isdn_ppp_resetparams {
unsigned char valid:1; /* rw Is this structure filled at all ? */
unsigned char rsend:1; /* rw Should we send one at all ? */
unsigned char idval:1; /* rw Is the id field valid ? */
unsigned char dtval:1; /* rw Is the data field valid ? */
unsigned char expra:1; /* rw Is an Ack expected for this Req ? */
unsigned char id; /* wo Send CCP ResetReq with this id */
unsigned short maxdlen; /* ro Max bytes to be stored in data field */
unsigned short dlen; /* rw Bytes stored in data field */
unsigned char *data; /* wo Data for ResetReq info field */
};
/*
* 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 module *owner;
struct list_head list;
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);
/* The reset entry needs to get more exact information about the
ResetReq or ResetAck it was called with. The parameters are
obvious. If reset is called without a Req or Ack frame which
could be handed into it, code MUST be set to 0. Using rsparm,
the reset entry can control if and how a ResetAck is returned. */
void (*reset) (void *state, unsigned char code, unsigned char id,
unsigned char *data, unsigned len,
struct isdn_ppp_resetparams *rsparm);
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,
struct isdn_ppp_resetparams *rsparm);
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 *);
#endif /* __KERNEL__ */
#endif /* _LINUX_ISDN_PPP_H */
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