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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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C
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note *//* * ppp-comp.h - Definitions for doing PPP packet compression. * * Copyright 1994-1998 Paul Mackerras. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. */#ifndef _UAPI_NET_PPP_COMP_H#define _UAPI_NET_PPP_COMP_H
/* * CCP codes. */
#define CCP_CONFREQ 1#define CCP_CONFACK 2#define CCP_TERMREQ 5#define CCP_TERMACK 6#define CCP_RESETREQ 14#define CCP_RESETACK 15
/* * Max # bytes for a CCP option */
#define CCP_MAX_OPTION_LENGTH 32
/* * Parts of a CCP packet. */
#define CCP_CODE(dp) ((dp)[0])#define CCP_ID(dp) ((dp)[1])#define CCP_LENGTH(dp) (((dp)[2] << 8) + (dp)[3])#define CCP_HDRLEN 4
#define CCP_OPT_CODE(dp) ((dp)[0])#define CCP_OPT_LENGTH(dp) ((dp)[1])#define CCP_OPT_MINLEN 2
/* * Definitions for BSD-Compress. */
#define CI_BSD_COMPRESS 21 /* config. option for BSD-Compress */#define CILEN_BSD_COMPRESS 3 /* length of config. option */
/* Macros for handling the 3rd byte of the BSD-Compress config option. */#define BSD_NBITS(x) ((x) & 0x1F) /* number of bits requested */#define BSD_VERSION(x) ((x) >> 5) /* version of option format */#define BSD_CURRENT_VERSION 1 /* current version number */#define BSD_MAKE_OPT(v, n) (((v) << 5) | (n))
#define BSD_MIN_BITS 9 /* smallest code size supported */#define BSD_MAX_BITS 15 /* largest code size supported */
/* * Definitions for Deflate. */
#define CI_DEFLATE 26 /* config option for Deflate */#define CI_DEFLATE_DRAFT 24 /* value used in original draft RFC */#define CILEN_DEFLATE 4 /* length of its config option */
#define DEFLATE_MIN_SIZE 9#define DEFLATE_MAX_SIZE 15#define DEFLATE_METHOD_VAL 8#define DEFLATE_SIZE(x) (((x) >> 4) + 8)#define DEFLATE_METHOD(x) ((x) & 0x0F)#define DEFLATE_MAKE_OPT(w) ((((w) - 8) << 4) + DEFLATE_METHOD_VAL)#define DEFLATE_CHK_SEQUENCE 0
/* * Definitions for MPPE. */
#define CI_MPPE 18 /* config option for MPPE */#define CILEN_MPPE 6 /* length of config option */
/* * Definitions for other, as yet unsupported, compression methods. */
#define CI_PREDICTOR_1 1 /* config option for Predictor-1 */#define CILEN_PREDICTOR_1 2 /* length of its config option */#define CI_PREDICTOR_2 2 /* config option for Predictor-2 */#define CILEN_PREDICTOR_2 2 /* length of its config option */
#endif /* _UAPI_NET_PPP_COMP_H */