cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ppp-comp.h (2542B)

      1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2/*
      3 * ppp-comp.h - Definitions for doing PPP packet compression.
      4 *
      5 * Copyright 1994-1998 Paul Mackerras.
      6 *
      7 *  This program is free software; you can redistribute it and/or
      8 *  modify it under the terms of the GNU General Public License
      9 *  version 2 as published by the Free Software Foundation.
     10 */
     11#ifndef _UAPI_NET_PPP_COMP_H
     12#define _UAPI_NET_PPP_COMP_H
     13
     14
     15/*
     16 * CCP codes.
     17 */
     18
     19#define CCP_CONFREQ	1
     20#define CCP_CONFACK	2
     21#define CCP_TERMREQ	5
     22#define CCP_TERMACK	6
     23#define CCP_RESETREQ	14
     24#define CCP_RESETACK	15
     25
     26/*
     27 * Max # bytes for a CCP option
     28 */
     29
     30#define CCP_MAX_OPTION_LENGTH	32
     31
     32/*
     33 * Parts of a CCP packet.
     34 */
     35
     36#define CCP_CODE(dp)		((dp)[0])
     37#define CCP_ID(dp)		((dp)[1])
     38#define CCP_LENGTH(dp)		(((dp)[2] << 8) + (dp)[3])
     39#define CCP_HDRLEN		4
     40
     41#define CCP_OPT_CODE(dp)	((dp)[0])
     42#define CCP_OPT_LENGTH(dp)	((dp)[1])
     43#define CCP_OPT_MINLEN		2
     44
     45/*
     46 * Definitions for BSD-Compress.
     47 */
     48
     49#define CI_BSD_COMPRESS		21	/* config. option for BSD-Compress */
     50#define CILEN_BSD_COMPRESS	3	/* length of config. option */
     51
     52/* Macros for handling the 3rd byte of the BSD-Compress config option. */
     53#define BSD_NBITS(x)		((x) & 0x1F)	/* number of bits requested */
     54#define BSD_VERSION(x)		((x) >> 5)	/* version of option format */
     55#define BSD_CURRENT_VERSION	1		/* current version number */
     56#define BSD_MAKE_OPT(v, n)	(((v) << 5) | (n))
     57
     58#define BSD_MIN_BITS		9	/* smallest code size supported */
     59#define BSD_MAX_BITS		15	/* largest code size supported */
     60
     61/*
     62 * Definitions for Deflate.
     63 */
     64
     65#define CI_DEFLATE		26	/* config option for Deflate */
     66#define CI_DEFLATE_DRAFT	24	/* value used in original draft RFC */
     67#define CILEN_DEFLATE		4	/* length of its config option */
     68
     69#define DEFLATE_MIN_SIZE	9
     70#define DEFLATE_MAX_SIZE	15
     71#define DEFLATE_METHOD_VAL	8
     72#define DEFLATE_SIZE(x)		(((x) >> 4) + 8)
     73#define DEFLATE_METHOD(x)	((x) & 0x0F)
     74#define DEFLATE_MAKE_OPT(w)	((((w) - 8) << 4) + DEFLATE_METHOD_VAL)
     75#define DEFLATE_CHK_SEQUENCE	0
     76
     77/*
     78 * Definitions for MPPE.
     79 */
     80
     81#define CI_MPPE                18      /* config option for MPPE */
     82#define CILEN_MPPE              6      /* length of config option */
     83
     84/*
     85 * Definitions for other, as yet unsupported, compression methods.
     86 */
     87
     88#define CI_PREDICTOR_1		1	/* config option for Predictor-1 */
     89#define CILEN_PREDICTOR_1	2	/* length of its config option */
     90#define CI_PREDICTOR_2		2	/* config option for Predictor-2 */
     91#define CILEN_PREDICTOR_2	2	/* length of its config option */
     92
     93
     94#endif /* _UAPI_NET_PPP_COMP_H */