| /* |
| * ccp.h - Definitions for PPP Compression Control Protocol. |
| * |
| * Copyright (c) 1994-2002 Paul Mackerras. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. The name(s) of the authors of this software must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. |
| * |
| * 3. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by Paul Mackerras |
| * <paulus@samba.org>". |
| * |
| * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO |
| * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
| * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY |
| * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
| * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
| * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| * |
| * $Id: ccp.h,v 1.12 2004/11/04 10:02:26 paulus Exp $ |
| */ |
| |
| #include "netif/ppp/ppp_opts.h" |
| #if PPP_SUPPORT && CCP_SUPPORT /* don't build if not configured for use in lwipopts.h */ |
| |
| #ifndef CCP_H |
| #define CCP_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* |
| * 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 |
| |
| #if BSDCOMPRESS_SUPPORT |
| /* |
| * 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 */ |
| #endif /* BSDCOMPRESS_SUPPORT */ |
| |
| #if DEFLATE_SUPPORT |
| /* |
| * 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 |
| #endif /* DEFLATE_SUPPORT */ |
| |
| #if MPPE_SUPPORT |
| /* |
| * Definitions for MPPE. |
| */ |
| |
| #define CI_MPPE 18 /* config option for MPPE */ |
| #define CILEN_MPPE 6 /* length of config option */ |
| #endif /* MPPE_SUPPORT */ |
| |
| #if PREDICTOR_SUPPORT |
| /* |
| * 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 /* PREDICTOR_SUPPORT */ |
| |
| typedef struct ccp_options { |
| #if DEFLATE_SUPPORT |
| unsigned int deflate :1; /* do Deflate? */ |
| unsigned int deflate_correct :1; /* use correct code for deflate? */ |
| unsigned int deflate_draft :1; /* use draft RFC code for deflate? */ |
| #endif /* DEFLATE_SUPPORT */ |
| #if BSDCOMPRESS_SUPPORT |
| unsigned int bsd_compress :1; /* do BSD Compress? */ |
| #endif /* BSDCOMPRESS_SUPPORT */ |
| #if PREDICTOR_SUPPORT |
| unsigned int predictor_1 :1; /* do Predictor-1? */ |
| unsigned int predictor_2 :1; /* do Predictor-2? */ |
| #endif /* PREDICTOR_SUPPORT */ |
| |
| #if MPPE_SUPPORT |
| u8_t mppe; /* MPPE bitfield */ |
| #endif /* MPPE_SUPPORT */ |
| #if BSDCOMPRESS_SUPPORT |
| u_short bsd_bits; /* # bits/code for BSD Compress */ |
| #endif /* BSDCOMPRESS_SUPPORT */ |
| #if DEFLATE_SUPPORT |
| u_short deflate_size; /* lg(window size) for Deflate */ |
| #endif /* DEFLATE_SUPPORT */ |
| u8_t method; /* code for chosen compression method */ |
| } ccp_options; |
| |
| extern const struct protent ccp_protent; |
| |
| void ccp_resetrequest(ppp_pcb *pcb); /* Issue a reset-request. */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* CCP_H */ |
| #endif /* PPP_SUPPORT && CCP_SUPPORT */ |