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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* ppp-comp.h - Definitions for doing PPP packet compression.
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*
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* Copyright 1994-1998 Paul Mackerras.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*/
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#ifndef _UAPI_NET_PPP_COMP_H
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#define _UAPI_NET_PPP_COMP_H
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/*
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* CCP codes.
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*/
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#define CCP_CONFREQ 1
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#define CCP_CONFACK 2
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#define CCP_TERMREQ 5
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#define CCP_TERMACK 6
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#define CCP_RESETREQ 14
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#define CCP_RESETACK 15
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/*
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* Max # bytes for a CCP option
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*/
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#define CCP_MAX_OPTION_LENGTH 32
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/*
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* Parts of a CCP packet.
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*/
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#define CCP_CODE(dp) ((dp)[0])
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#define CCP_ID(dp) ((dp)[1])
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#define CCP_LENGTH(dp) (((dp)[2] << 8) + (dp)[3])
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#define CCP_HDRLEN 4
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#define CCP_OPT_CODE(dp) ((dp)[0])
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#define CCP_OPT_LENGTH(dp) ((dp)[1])
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#define CCP_OPT_MINLEN 2
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/*
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* Definitions for BSD-Compress.
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*/
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#define CI_BSD_COMPRESS 21 /* config. option for BSD-Compress */
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#define CILEN_BSD_COMPRESS 3 /* length of config. option */
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/* Macros for handling the 3rd byte of the BSD-Compress config option. */
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#define BSD_NBITS(x) ((x) & 0x1F) /* number of bits requested */
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#define BSD_VERSION(x) ((x) >> 5) /* version of option format */
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#define BSD_CURRENT_VERSION 1 /* current version number */
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#define BSD_MAKE_OPT(v, n) (((v) << 5) | (n))
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#define BSD_MIN_BITS 9 /* smallest code size supported */
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#define BSD_MAX_BITS 15 /* largest code size supported */
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/*
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* Definitions for Deflate.
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*/
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#define CI_DEFLATE 26 /* config option for Deflate */
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#define CI_DEFLATE_DRAFT 24 /* value used in original draft RFC */
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#define CILEN_DEFLATE 4 /* length of its config option */
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#define DEFLATE_MIN_SIZE 9
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#define DEFLATE_MAX_SIZE 15
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#define DEFLATE_METHOD_VAL 8
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#define DEFLATE_SIZE(x) (((x) >> 4) + 8)
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#define DEFLATE_METHOD(x) ((x) & 0x0F)
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#define DEFLATE_MAKE_OPT(w) ((((w) - 8) << 4) + DEFLATE_METHOD_VAL)
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#define DEFLATE_CHK_SEQUENCE 0
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/*
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* Definitions for MPPE.
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*/
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#define CI_MPPE 18 /* config option for MPPE */
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#define CILEN_MPPE 6 /* length of config option */
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/*
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* Definitions for other, as yet unsupported, compression methods.
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*/
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#define CI_PREDICTOR_1 1 /* config option for Predictor-1 */
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#define CILEN_PREDICTOR_1 2 /* length of its config option */
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#define CI_PREDICTOR_2 2 /* config option for Predictor-2 */
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#define CILEN_PREDICTOR_2 2 /* length of its config option */
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#endif /* _UAPI_NET_PPP_COMP_H */
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