/*

 * if_ppp.h - Point-to-Point Protocol definitions.

 *

 * Copyright (c) 1989 Carnegie Mellon University.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms are permitted

 * provided that the above copyright notice and this paragraph are

 * duplicated in all such forms and that any documentation,

 * advertising materials, and other materials related to such

 * distribution and use acknowledge that the software was developed

 * by Carnegie Mellon University.  The name of the

 * University may not be used to endorse or promote products derived

 * from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 *

 */

/*

 *  ==FILEVERSION 20050812==

 *

 *  NOTE TO MAINTAINERS:

 *     If you modify this file at all, please set the above date.

 *     if_ppp.h is shipped with a PPP distribution as well as with the kernel;

 *     if everyone increases the FILEVERSION number above, then scripts

 *     can do the right thing when deciding whether to install a new if_ppp.h

 *     file.  Don't change the format of that line otherwise, so the

 *     installation script can recognize it.

 */

#ifndef _IF_PPP_H_

#define _IF_PPP_H_

#include <linux/compiler.h>

/*

 * Packet sizes

 */

#define	PPP_MTU		1500	/* Default MTU (size of Info field) */

#define PPP_MAXMRU	65000	/* Largest MRU we allow */

#define PROTO_IPX	0x002b	/* protocol numbers */

#define PROTO_DNA_RT    0x0027  /* DNA Routing */

/*

 * Bit definitions for flags.

 */

#define SC_COMP_PROT	0x00000001	/* protocol compression (output) */

#define SC_COMP_AC	0x00000002	/* header compression (output) */

#define	SC_COMP_TCP	0x00000004	/* TCP (VJ) compression (output) */

#define SC_NO_TCP_CCID	0x00000008	/* disable VJ connection-id comp. */

#define SC_REJ_COMP_AC	0x00000010	/* reject adrs/ctrl comp. on input */

#define SC_REJ_COMP_TCP	0x00000020	/* reject TCP (VJ) comp. on input */

#define SC_CCP_OPEN	0x00000040	/* Look at CCP packets */

#define SC_CCP_UP	0x00000080	/* May send/recv compressed packets */

#define SC_ENABLE_IP	0x00000100	/* IP packets may be exchanged */

#define SC_LOOP_TRAFFIC	0x00000200	/* send traffic to pppd */

#define SC_MULTILINK	0x00000400	/* do multilink encapsulation */

#define SC_MP_SHORTSEQ	0x00000800	/* use short MP sequence numbers */

#define SC_COMP_RUN	0x00001000	/* compressor has been inited */

#define SC_DECOMP_RUN	0x00002000	/* decompressor has been inited */

#define SC_MP_XSHORTSEQ	0x00004000	/* transmit short MP seq numbers */

#define SC_DEBUG	0x00010000	/* enable debug messages */

#define SC_LOG_INPKT	0x00020000	/* log contents of good pkts recvd */

#define SC_LOG_OUTPKT	0x00040000	/* log contents of pkts sent */

#define SC_LOG_RAWIN	0x00080000	/* log all chars received */

#define SC_LOG_FLUSH	0x00100000	/* log all chars flushed */

#define	SC_SYNC		0x00200000	/* synchronous serial mode */

#define	SC_MUST_COMP    0x00400000	/* no uncompressed packets may be sent or received */

#define	SC_MASK		0x0f600fff	/* bits that user can change */

/* state bits */

#define SC_XMIT_BUSY	0x10000000	/* (used by isdn_ppp?) */

#define SC_RCV_ODDP	0x08000000	/* have rcvd char with odd parity */

#define SC_RCV_EVNP	0x04000000	/* have rcvd char with even parity */

#define SC_RCV_B7_1	0x02000000	/* have rcvd char with bit 7 = 1 */

#define SC_RCV_B7_0	0x01000000	/* have rcvd char with bit 7 = 0 */

#define SC_DC_FERROR	0x00800000	/* fatal decomp error detected */

#define SC_DC_ERROR	0x00400000	/* non-fatal decomp error detected */

/*

 * Ioctl definitions.

 */

struct npioctl {

	int		protocol;	/* PPP protocol, e.g. PPP_IP */

	enum NPmode	mode;

};

/* Structure describing a CCP configuration option, for PPPIOCSCOMPRESS */

struct ppp_option_data {

	__u8	__user *ptr;

	__u32	length;

	int	transmit;

};

struct ifpppstatsreq {

	struct ifreq	 b;

	struct ppp_stats stats;			/* statistic information */

};

struct ifpppcstatsreq {

	struct ifreq	      b;

	struct ppp_comp_stats stats;

};

/* For PPPIOCGL2TPSTATS */

struct pppol2tp_ioc_stats {

	__u16		tunnel_id;	/* redundant */

	__u16		session_id;	/* if zero, get tunnel stats */

	__u32		using_ipsec:1;	/* valid only for session_id == 0 */

	aligned_u64	tx_packets;

	aligned_u64	tx_bytes;

	aligned_u64	tx_errors;

	aligned_u64	rx_packets;

	aligned_u64	rx_bytes;

	aligned_u64	rx_seq_discards;

	aligned_u64	rx_oos_packets;

	aligned_u64	rx_errors;

};

#define ifr__name       b.ifr_ifrn.ifrn_name

#define stats_ptr       b.ifr_ifru.ifru_data

/*

 * Ioctl definitions.

 */

#define	PPPIOCGFLAGS	_IOR('t', 90, int)	/* get configuration flags */

#define	PPPIOCSFLAGS	_IOW('t', 89, int)	/* set configuration flags */

#define	PPPIOCGASYNCMAP	_IOR('t', 88, int)	/* get async map */

#define	PPPIOCSASYNCMAP	_IOW('t', 87, int)	/* set async map */

#define	PPPIOCGUNIT	_IOR('t', 86, int)	/* get ppp unit number */

#define	PPPIOCGRASYNCMAP _IOR('t', 85, int)	/* get receive async map */

#define	PPPIOCSRASYNCMAP _IOW('t', 84, int)	/* set receive async map */

#define	PPPIOCGMRU	_IOR('t', 83, int)	/* get max receive unit */

#define	PPPIOCSMRU	_IOW('t', 82, int)	/* set max receive unit */

#define	PPPIOCSMAXCID	_IOW('t', 81, int)	/* set VJ max slot ID */

#define PPPIOCGXASYNCMAP _IOR('t', 80, ext_accm) /* get extended ACCM */

#define PPPIOCSXASYNCMAP _IOW('t', 79, ext_accm) /* set extended ACCM */

#define PPPIOCXFERUNIT	_IO('t', 78)		/* transfer PPP unit */

#define PPPIOCSCOMPRESS	_IOW('t', 77, struct ppp_option_data)

#define PPPIOCGNPMODE	_IOWR('t', 76, struct npioctl) /* get NP mode */

#define PPPIOCSNPMODE	_IOW('t', 75, struct npioctl)  /* set NP mode */

#define PPPIOCSPASS	_IOW('t', 71, struct sock_fprog) /* set pass filter */

#define PPPIOCSACTIVE	_IOW('t', 70, struct sock_fprog) /* set active filt */

#define PPPIOCGDEBUG	_IOR('t', 65, int)	/* Read debug level */

#define PPPIOCSDEBUG	_IOW('t', 64, int)	/* Set debug level */

#define PPPIOCGIDLE	_IOR('t', 63, struct ppp_idle) /* get idle time */

#define PPPIOCNEWUNIT	_IOWR('t', 62, int)	/* create new ppp unit */

#define PPPIOCATTACH	_IOW('t', 61, int)	/* attach to ppp unit */

#define PPPIOCDETACH	_IOW('t', 60, int)	/* detach from ppp unit/chan */

#define PPPIOCSMRRU	_IOW('t', 59, int)	/* set multilink MRU */

#define PPPIOCCONNECT	_IOW('t', 58, int)	/* connect channel to unit */

#define PPPIOCDISCONN	_IO('t', 57)		/* disconnect channel */

#define PPPIOCATTCHAN	_IOW('t', 56, int)	/* attach to ppp channel */

#define PPPIOCGCHAN	_IOR('t', 55, int)	/* get ppp channel number */

#define PPPIOCGL2TPSTATS _IOR('t', 54, struct pppol2tp_ioc_stats)

#define SIOCGPPPSTATS   (SIOCDEVPRIVATE + 0)

#define SIOCGPPPVER     (SIOCDEVPRIVATE + 1)	/* NEVER change this!! */

#define SIOCGPPPCSTATS  (SIOCDEVPRIVATE + 2)

#if !defined(ifr_mtu)

#define ifr_mtu	ifr_ifru.ifru_metric

#endif

#endif /* _IF_PPP_H_ */