/*      $NetBSD: if_ppp.h,v 1.28 2025/01/08 18:05:39 christos Exp $     */
/*      Id: if_ppp.h,v 1.16 1997/04/30 05:46:04 paulus Exp      */

/*
* if_ppp.h - Point-to-Point Protocol definitions.
*
* Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
*    endorse or promote products derived from this software without
*    prior written permission. For permission or any legal
*    details, please contact
*      Office of Technology Transfer
*      Carnegie Mellon University
*      5000 Forbes Avenue
*      Pittsburgh, PA  15213-3890
*      (412) 268-4387, fax: (412) 268-7395
*      [email protected]
*
* 4. Redistributions of any form whatsoever must retain the following
*    acknowledgment:
*    "This product includes software developed by Computing Services
*     at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#ifndef _NET_IF_PPP_H_
#define _NET_IF_PPP_H_

#include <sys/ioccom.h>

/*
* 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_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 HDLC */
#define SC_RCV_B7_0     0x01000000      /* have rcvd char with bit 7 = 0 */
#define SC_RCV_B7_1     0x02000000      /* have rcvd char with bit 7 = 1 */
#define SC_RCV_EVNP     0x04000000      /* have rcvd char with even parity */
#define SC_RCV_ODDP     0x08000000      /* have rcvd char with odd parity */

#define SC_MASK         0x0fff00ff      /* bits that user can change */

/*
* State bits in sc_flags, not changeable by user.
*/
#define SC_TIMEOUT      0x00000400      /* timeout is currently pending */
#define SC_VJ_RESET     0x00000800      /* need to reset VJ decomp */
#define SC_COMP_RUN     0x00001000      /* compressor has been inited */
#define SC_DECOMP_RUN   0x00002000      /* decompressor has been inited */
#define SC_DC_ERROR     0x00004000      /* non-fatal decomp error detected */
#define SC_DC_FERROR    0x00008000      /* fatal decomp error detected */
#define SC_TBUSY        0x10000000      /* xmitter doesn't need a packet yet */
#define SC_PKTLOST      0x20000000      /* have lost or dropped a packet */
#define SC_FLUSH        0x40000000      /* flush input until next PPP_FLAG */
#define SC_ESCAPED      0x80000000      /* saw a PPP_ESCAPE */

/*
* Ioctl definitions.
*/

struct npioctl {
   int         protocol;       /* PPP procotol, e.g. PPP_IP */
   enum NPmode mode;
};

/* Structure describing a CCP configuration option, for PPPIOCSCOMPRESS */
struct ppp_option_data {
       u_char  *ptr;
       u_int   length;
       int     transmit;
};

struct ifpppstatsreq {
   char ifr_name[IFNAMSIZ];
   struct ppp_stats stats;
};

struct ifpppcstatsreq {
   char ifr_name[IFNAMSIZ];
   struct ppp_comp_stats stats;
};

struct ppp_rawin {
   u_char buf[63];
   u_char count;
};

/*
* Ioctl definitions.
*/

#define PPPIOCGRAWIN    _IOR('t', 91, struct ppp_rawin) /* get raw input */
#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 PPPIOCGIDLE     _IOR('t', 74, struct ppp_idle) /* get idle time */
/*
* XXX These are deprecated; they can no longer be used, because they
* XXX don't play well with multiple encaps.  The defs are here so that
* XXX we can return decent errors to old pppds, and so that new pppds
* XXX will work with old kernels.
*/
#define PPPIOCSPASS     _IOW('t', 71, struct bpf_program) /* set pass filter */
#define PPPIOCSACTIVE   _IOW('t', 70, struct bpf_program) /* set active filt */

/*
* Use these instead.
*/
#define PPPIOCSIPASS    _IOW('t', 69, struct bpf_program) /* set in pass flt */
#define PPPIOCSOPASS    _IOW('t', 68, struct bpf_program) /* set out pass flt */
#define PPPIOCSIACTIVE  _IOW('t', 67, struct bpf_program) /* set in act flt */
#define PPPIOCSOACTIVE  _IOW('t', 66, struct bpf_program) /* set out act flt */

/* PPPIOC[GS]MTU are alternatives to SIOC[GS]IFMTU, used under Ultrix */
#define PPPIOCGMTU      _IOR('t', 73, int)      /* get interface MTU */
#define PPPIOCSMTU      _IOW('t', 72, int)      /* set interface MTU */

/*
* These two are interface ioctls so that pppstats can do them on
* a socket without having to open the serial device.
*/
#define SIOCGPPPSTATS   _IOWR('i', 123, struct ifpppstatsreq)
#define SIOCGPPPCSTATS  _IOWR('i', 122, struct ifpppcstatsreq)

#if !defined(ifr_mtu)
#define ifr_mtu ifr_ifru.ifru_metric
#endif

#if defined(_KERNEL) || defined(KERNEL)
struct compressor;
int     ppp_register_compressor(struct compressor *, size_t);
int     ppp_unregister_compressor(struct compressor *, size_t);
#endif
#endif /* !_NET_IF_PPP_H_ */

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