1/* 2 * lcp.h - Link Control Protocol definitions. 3 * 4 * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 18 * 3. The name "Carnegie Mellon University" must not be used to 19 * endorse or promote products derived from this software without 20 * prior written permission. For permission or any legal 21 * details, please contact 22 * Office of Technology Transfer 23 * Carnegie Mellon University 24 * 5000 Forbes Avenue 25 * Pittsburgh, PA 15213-3890 26 * (412) 268-4387, fax: (412) 268-7395 27 * tech-transfer@andrew.cmu.edu 28 * 29 * 4. Redistributions of any form whatsoever must retain the following 30 * acknowledgment: 31 * "This product includes software developed by Computing Services 32 * at Carnegie Mellon University (http://www.cmu.edu/computing/)." 33 * 34 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO 35 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 36 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE 37 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 38 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 39 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 40 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 41 * 42 * $Id: lcp.h,v 1.20 2004/11/14 22:53:42 carlsonj Exp $ 43 */ 44 45#include "netif/ppp/ppp_opts.h" 46#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ 47 48#ifndef LCP_H 49#define LCP_H 50 51#include "ppp.h" 52 53/* 54 * Options. 55 */ 56#define CI_VENDOR 0 /* Vendor Specific */ 57#define CI_MRU 1 /* Maximum Receive Unit */ 58#define CI_ASYNCMAP 2 /* Async Control Character Map */ 59#define CI_AUTHTYPE 3 /* Authentication Type */ 60#define CI_QUALITY 4 /* Quality Protocol */ 61#define CI_MAGICNUMBER 5 /* Magic Number */ 62#define CI_PCOMPRESSION 7 /* Protocol Field Compression */ 63#define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */ 64#define CI_FCSALTERN 9 /* FCS-Alternatives */ 65#define CI_SDP 10 /* Self-Describing-Pad */ 66#define CI_NUMBERED 11 /* Numbered-Mode */ 67#define CI_CALLBACK 13 /* callback */ 68#define CI_MRRU 17 /* max reconstructed receive unit; multilink */ 69#define CI_SSNHF 18 /* short sequence numbers for multilink */ 70#define CI_EPDISC 19 /* endpoint discriminator */ 71#define CI_MPPLUS 22 /* Multi-Link-Plus-Procedure */ 72#define CI_LDISC 23 /* Link-Discriminator */ 73#define CI_LCPAUTH 24 /* LCP Authentication */ 74#define CI_COBS 25 /* Consistent Overhead Byte Stuffing */ 75#define CI_PREFELIS 26 /* Prefix Elision */ 76#define CI_MPHDRFMT 27 /* MP Header Format */ 77#define CI_I18N 28 /* Internationalization */ 78#define CI_SDL 29 /* Simple Data Link */ 79 80/* 81 * LCP-specific packet types (code numbers). 82 */ 83#define PROTREJ 8 /* Protocol Reject */ 84#define ECHOREQ 9 /* Echo Request */ 85#define ECHOREP 10 /* Echo Reply */ 86#define DISCREQ 11 /* Discard Request */ 87#define IDENTIF 12 /* Identification */ 88#define TIMEREM 13 /* Time Remaining */ 89 90/* Value used as data for CI_CALLBACK option */ 91#define CBCP_OPT 6 /* Use callback control protocol */ 92 93#if 0 /* moved to ppp_opts.h */ 94#define DEFMRU 1500 /* Try for this */ 95#define MINMRU 128 /* No MRUs below this */ 96#define MAXMRU 16384 /* Normally limit MRU to this */ 97#endif /* moved to ppp_opts.h */ 98 99/* An endpoint discriminator, used with multilink. */ 100#define MAX_ENDP_LEN 20 /* maximum length of discriminator value */ 101struct epdisc { 102 unsigned char class_; /* -- The word "class" is reserved in C++. */ 103 unsigned char length; 104 unsigned char value[MAX_ENDP_LEN]; 105}; 106 107/* 108 * The state of options is described by an lcp_options structure. 109 */ 110typedef struct lcp_options { 111 unsigned int passive :1; /* Don't die if we don't get a response */ 112 unsigned int silent :1; /* Wait for the other end to start first */ 113#if 0 /* UNUSED */ 114 unsigned int restart :1; /* Restart vs. exit after close */ 115#endif /* UNUSED */ 116 unsigned int neg_mru :1; /* Negotiate the MRU? */ 117 unsigned int neg_asyncmap :1; /* Negotiate the async map? */ 118#if PAP_SUPPORT 119 unsigned int neg_upap :1; /* Ask for UPAP authentication? */ 120#endif /* PAP_SUPPORT */ 121#if CHAP_SUPPORT 122 unsigned int neg_chap :1; /* Ask for CHAP authentication? */ 123#endif /* CHAP_SUPPORT */ 124#if EAP_SUPPORT 125 unsigned int neg_eap :1; /* Ask for EAP authentication? */ 126#endif /* EAP_SUPPORT */ 127 unsigned int neg_magicnumber :1; /* Ask for magic number? */ 128 unsigned int neg_pcompression :1; /* HDLC Protocol Field Compression? */ 129 unsigned int neg_accompression :1; /* HDLC Address/Control Field Compression? */ 130#if LQR_SUPPORT 131 unsigned int neg_lqr :1; /* Negotiate use of Link Quality Reports */ 132#endif /* LQR_SUPPORT */ 133 unsigned int neg_cbcp :1; /* Negotiate use of CBCP */ 134#ifdef HAVE_MULTILINK 135 unsigned int neg_mrru :1; /* negotiate multilink MRRU */ 136#endif /* HAVE_MULTILINK */ 137 unsigned int neg_ssnhf :1; /* negotiate short sequence numbers */ 138 unsigned int neg_endpoint :1; /* negotiate endpoint discriminator */ 139 140 u16_t mru; /* Value of MRU */ 141#ifdef HAVE_MULTILINK 142 u16_t mrru; /* Value of MRRU, and multilink enable */ 143#endif /* MULTILINK */ 144#if CHAP_SUPPORT 145 u8_t chap_mdtype; /* which MD types (hashing algorithm) */ 146#endif /* CHAP_SUPPORT */ 147 u32_t asyncmap; /* Value of async map */ 148 u32_t magicnumber; 149 u8_t numloops; /* Number of loops during magic number neg. */ 150#if LQR_SUPPORT 151 u32_t lqr_period; /* Reporting period for LQR 1/100ths second */ 152#endif /* LQR_SUPPORT */ 153 struct epdisc endpoint; /* endpoint discriminator */ 154} lcp_options; 155 156void lcp_open(ppp_pcb *pcb); 157void lcp_close(ppp_pcb *pcb, const char *reason); 158void lcp_lowerup(ppp_pcb *pcb); 159void lcp_lowerdown(ppp_pcb *pcb); 160void lcp_sprotrej(ppp_pcb *pcb, u_char *p, int len); /* send protocol reject */ 161 162extern const struct protent lcp_protent; 163 164#if 0 /* moved to ppp_opts.h */ 165/* Default number of times we receive our magic number from the peer 166 before deciding the link is looped-back. */ 167#define DEFLOOPBACKFAIL 10 168#endif /* moved to ppp_opts.h */ 169 170#endif /* LCP_H */ 171#endif /* PPP_SUPPORT */ 172