1*c3fb4252SPedro F. Giffuni /*- 2*c3fb4252SPedro F. Giffuni * Copyright (c) 2007 Alexander Motin <mav@freebsd.org> 3*c3fb4252SPedro F. Giffuni * All rights reserved. 4*c3fb4252SPedro F. Giffuni * 5*c3fb4252SPedro F. Giffuni * Redistribution and use in source and binary forms, with or without 6*c3fb4252SPedro F. Giffuni * modification, are permitted provided that the following conditions 7*c3fb4252SPedro F. Giffuni * are met: 8*c3fb4252SPedro F. Giffuni * 1. Redistributions of source code must retain the above copyright 9*c3fb4252SPedro F. Giffuni * notice unmodified, this list of conditions, and the following 10*c3fb4252SPedro F. Giffuni * disclaimer. 11*c3fb4252SPedro F. Giffuni * 2. Redistributions in binary form must reproduce the above copyright 12*c3fb4252SPedro F. Giffuni * notice, this list of conditions and the following disclaimer in the 13*c3fb4252SPedro F. Giffuni * documentation and/or other materials provided with the distribution. 14*c3fb4252SPedro F. Giffuni * 15*c3fb4252SPedro F. Giffuni * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16*c3fb4252SPedro F. Giffuni * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17*c3fb4252SPedro F. Giffuni * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18*c3fb4252SPedro F. Giffuni * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19*c3fb4252SPedro F. Giffuni * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20*c3fb4252SPedro F. Giffuni * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21*c3fb4252SPedro F. Giffuni * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22*c3fb4252SPedro F. Giffuni * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23*c3fb4252SPedro F. Giffuni * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24*c3fb4252SPedro F. Giffuni * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25*c3fb4252SPedro F. Giffuni * SUCH DAMAGE. 26*c3fb4252SPedro F. Giffuni */ 27*c3fb4252SPedro F. Giffuni 28*c3fb4252SPedro F. Giffuni /* 29*c3fb4252SPedro F. Giffuni * MPPC decompression library. 30*c3fb4252SPedro F. Giffuni * Version 1.0 31*c3fb4252SPedro F. Giffuni * 32*c3fb4252SPedro F. Giffuni * Note that Hi/Fn (later acquired by Exar Corporation) held US patents 33*c3fb4252SPedro F. Giffuni * on some implementation-critical aspects of MPPC compression. 34*c3fb4252SPedro F. Giffuni * These patents lapsed due to non-payment of fees in 2007 and by 2015 35*c3fb4252SPedro F. Giffuni * expired altogether. 36*c3fb4252SPedro F. Giffuni */ 37*c3fb4252SPedro F. Giffuni 38*c3fb4252SPedro F. Giffuni #ifndef _NET_MPPC_H_ 39*c3fb4252SPedro F. Giffuni #define _NET_MPPC_H_ 40*c3fb4252SPedro F. Giffuni 41*c3fb4252SPedro F. Giffuni #define MPPC_MANDATORY_COMPRESS_FLAGS 0 42*c3fb4252SPedro F. Giffuni #define MPPC_MANDATORY_DECOMPRESS_FLAGS 0 43*c3fb4252SPedro F. Giffuni 44*c3fb4252SPedro F. Giffuni #define MPPC_SAVE_HISTORY 1 45*c3fb4252SPedro F. Giffuni 46*c3fb4252SPedro F. Giffuni #define MPPC_OK 5 47*c3fb4252SPedro F. Giffuni #define MPPC_EXPANDED 8 48*c3fb4252SPedro F. Giffuni #define MPPC_RESTART_HISTORY 16 49*c3fb4252SPedro F. Giffuni #define MPPC_DEST_EXHAUSTED 32 50*c3fb4252SPedro F. Giffuni 51*c3fb4252SPedro F. Giffuni extern size_t MPPC_SizeOfCompressionHistory(void); 52*c3fb4252SPedro F. Giffuni extern size_t MPPC_SizeOfDecompressionHistory(void); 53*c3fb4252SPedro F. Giffuni 54*c3fb4252SPedro F. Giffuni extern void MPPC_InitCompressionHistory(char *history); 55*c3fb4252SPedro F. Giffuni extern void MPPC_InitDecompressionHistory(char *history); 56*c3fb4252SPedro F. Giffuni 57*c3fb4252SPedro F. Giffuni extern int MPPC_Compress(u_char **src, u_char **dst, u_long *srcCnt, u_long *dstCnt, char *history, int flags, int undef); 58*c3fb4252SPedro F. Giffuni extern int MPPC_Decompress(u_char **src, u_char **dst, u_long *srcCnt, u_long *dstCnt, char *history, int flags); 59*c3fb4252SPedro F. Giffuni 60*c3fb4252SPedro F. Giffuni #endif 61