text: /*	$Id: if_ppp.h,v 1.21 2000/03/27 06:03:36 paulus Exp $	*/
  
  /*
   * 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_ */
  