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📄 ppp_defs.h(5.41 KB)
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📄 toeplitz.c(1.96 KB)
📄 toeplitz.h(1.72 KB)
📄 vnet.c(22.42 KB)
📄 vnet.h(14.62 KB)

Editing: ppp_defs.h

/*
 * ppp_defs.h - PPP definitions.
 */
/*-
 * Copyright (c) 1994 The Australian National University.
 * All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, provided that the above copyright
 * notice appears in all copies.  This software is provided without any
 * warranty, express or implied. The Australian National University
 * makes no representations about the suitability of this software for
 * any purpose.
 *
 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 *
 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
 * OR MODIFICATIONS.
 *
 * $FreeBSD$
 */

#ifndef _PPP_DEFS_H_
#define _PPP_DEFS_H_

#include <sys/_types.h>

/*
 * The basic PPP frame.
 */
#define PPP_HDRLEN	4	/* octets for standard ppp header */
#define PPP_FCSLEN	2	/* octets for FCS */
#define PPP_MRU		1500	/* default MRU = max length of info field */

#define PPP_ADDRESS(p)	(((u_char *)(p))[0])
#define PPP_CONTROL(p)	(((u_char *)(p))[1])
#define PPP_PROTOCOL(p)	((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])

/*
 * Significant octet values.
 */
#define	PPP_ALLSTATIONS	0xff	/* All-Stations broadcast address */
#define	PPP_UI		0x03	/* Unnumbered Information */
#define	PPP_FLAG	0x7e	/* Flag Sequence */
#define	PPP_ESCAPE	0x7d	/* Asynchronous Control Escape */
#define	PPP_TRANS	0x20	/* Asynchronous transparency modifier */

/*
 * Protocol field values.
 */
#define PPP_IP		0x21	/* Internet Protocol */
#define	PPP_XNS		0x25	/* Xerox NS */
#define PPP_AT		0x29	/* AppleTalk Protocol */
#define PPP_IPX		0x2b	/* IPX Datagram (RFC1552) */
#define	PPP_VJC_COMP	0x2d	/* VJ compressed TCP */
#define	PPP_VJC_UNCOMP	0x2f	/* VJ uncompressed TCP */
#define PPP_COMP	0xfd	/* compressed packet */
#define PPP_IPCP	0x8021	/* IP Control Protocol */
#define PPP_ATCP	0x8029	/* AppleTalk Control Protocol */
#define PPP_IPXCP	0x802b	/* IPX Control Protocol (RFC1552) */
#define PPP_CCP		0x80fd	/* Compression Control Protocol */
#define PPP_LCP		0xc021	/* Link Control Protocol */
#define PPP_PAP		0xc023	/* Password Authentication Protocol */
#define PPP_LQR		0xc025	/* Link Quality Report protocol */
#define PPP_CHAP	0xc223	/* Cryptographic Handshake Auth. Protocol */
#define PPP_CBCP	0xc029	/* Callback Control Protocol */
#define PPP_IPV6	0x57	/* Internet Protocol version 6*/
#define PPP_IPV6CP	0x8057	/* IPv6 Control Protocol */

/*
 * Values for FCS calculations.
 */
#define PPP_INITFCS	0xffff	/* Initial FCS value */
#define PPP_GOODFCS	0xf0b8	/* Good final FCS value */
#define PPP_FCS(fcs, c)	(((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])

/*
 * Extended asyncmap - allows any character to be escaped.
 */
typedef __uint32_t	ext_accm[8];

/*
 * What to do with network protocol (NP) packets.
 */
enum NPmode {
    NPMODE_PASS,		/* pass the packet through */
    NPMODE_DROP,		/* silently drop the packet */
    NPMODE_ERROR,		/* return an error */
    NPMODE_QUEUE		/* save it up for later. */
};

/*
 * Statistics.
 */
struct pppstat	{
    unsigned int ppp_ibytes;	/* bytes received */
    unsigned int ppp_ipackets;	/* packets received */
    unsigned int ppp_ierrors;	/* receive errors */
    unsigned int ppp_obytes;	/* bytes sent */
    unsigned int ppp_opackets;	/* packets sent */
    unsigned int ppp_oerrors;	/* transmit errors */
};

struct vjstat {
    unsigned int vjs_packets;	/* outbound packets */
    unsigned int vjs_compressed; /* outbound compressed packets */
    unsigned int vjs_searches;	/* searches for connection state */
    unsigned int vjs_misses;	/* times couldn't find conn. state */
    unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
    unsigned int vjs_compressedin; /* inbound compressed packets */
    unsigned int vjs_errorin;	/* inbound unknown type packets */
    unsigned int vjs_tossed;	/* inbound packets tossed because of error */
};

struct ppp_stats {
    struct pppstat p;		/* basic PPP statistics */
    struct vjstat vj;		/* VJ header compression statistics */
};

struct compstat {
    unsigned int unc_bytes;	/* total uncompressed bytes */
    unsigned int unc_packets;	/* total uncompressed packets */
    unsigned int comp_bytes;	/* compressed bytes */
    unsigned int comp_packets;	/* compressed packets */
    unsigned int inc_bytes;	/* incompressible bytes */
    unsigned int inc_packets;	/* incompressible packets */
    unsigned int ratio;		/* recent compression ratio << 8 */
};

struct ppp_comp_stats {
    struct compstat c;		/* packet compression statistics */
    struct compstat d;		/* packet decompression statistics */
};

/*
 * The following structure records the time in seconds since
 * the last NP packet was sent or received.
 */
struct ppp_idle {
    __time_t xmit_idle;		/* time since last NP packet sent */
    __time_t recv_idle;		/* time since last NP packet received */
};

#ifndef __P
#ifdef __STDC__
#define __P(x)	x
#else
#define __P(x)	()
#endif
#endif

#endif /* _PPP_DEFS_H_ */

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Editing: ppp_defs.h

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