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170 lines
6.5 KiB
C
170 lines
6.5 KiB
C
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/*
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* lcp.h - Link Control Protocol definitions.
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*
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* Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The name "Carnegie Mellon University" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For permission or any legal
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* details, please contact
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* Office of Technology Transfer
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* Carnegie Mellon University
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* 5000 Forbes Avenue
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* Pittsburgh, PA 15213-3890
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* (412) 268-4387, fax: (412) 268-7395
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* tech-transfer@andrew.cmu.edu
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*
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* 4. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by Computing Services
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* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
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*
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* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
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* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
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* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* $Id: lcp.h,v 1.20 2004/11/14 22:53:42 carlsonj Exp $
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*/
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#include "lwip/opt.h"
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#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
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#ifndef LCP_H
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#define LCP_H
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#include "ppp.h"
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/*
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* Options.
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*/
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#define CI_VENDOR 0 /* Vendor Specific */
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#define CI_MRU 1 /* Maximum Receive Unit */
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#define CI_ASYNCMAP 2 /* Async Control Character Map */
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#define CI_AUTHTYPE 3 /* Authentication Type */
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#define CI_QUALITY 4 /* Quality Protocol */
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#define CI_MAGICNUMBER 5 /* Magic Number */
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#define CI_PCOMPRESSION 7 /* Protocol Field Compression */
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#define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */
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#define CI_FCSALTERN 9 /* FCS-Alternatives */
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#define CI_SDP 10 /* Self-Describing-Pad */
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#define CI_NUMBERED 11 /* Numbered-Mode */
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#define CI_CALLBACK 13 /* callback */
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#define CI_MRRU 17 /* max reconstructed receive unit; multilink */
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#define CI_SSNHF 18 /* short sequence numbers for multilink */
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#define CI_EPDISC 19 /* endpoint discriminator */
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#define CI_MPPLUS 22 /* Multi-Link-Plus-Procedure */
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#define CI_LDISC 23 /* Link-Discriminator */
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#define CI_LCPAUTH 24 /* LCP Authentication */
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#define CI_COBS 25 /* Consistent Overhead Byte Stuffing */
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#define CI_PREFELIS 26 /* Prefix Elision */
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#define CI_MPHDRFMT 27 /* MP Header Format */
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#define CI_I18N 28 /* Internationalization */
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#define CI_SDL 29 /* Simple Data Link */
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/*
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* LCP-specific packet types (code numbers).
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*/
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#define PROTREJ 8 /* Protocol Reject */
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#define ECHOREQ 9 /* Echo Request */
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#define ECHOREP 10 /* Echo Reply */
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#define DISCREQ 11 /* Discard Request */
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#define IDENTIF 12 /* Identification */
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#define TIMEREM 13 /* Time Remaining */
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/* Value used as data for CI_CALLBACK option */
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#define CBCP_OPT 6 /* Use callback control protocol */
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#if 0 /* moved to opt.h */
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#define DEFMRU 1500 /* Try for this */
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#define MINMRU 128 /* No MRUs below this */
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#define MAXMRU 16384 /* Normally limit MRU to this */
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#endif /* moved to opt.h */
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/* An endpoint discriminator, used with multilink. */
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#define MAX_ENDP_LEN 20 /* maximum length of discriminator value */
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struct epdisc {
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unsigned char class_; /* -- The word "class" is reserved in C++. */
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unsigned char length;
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unsigned char value[MAX_ENDP_LEN];
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};
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/*
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* The state of options is described by an lcp_options structure.
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*/
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typedef struct lcp_options {
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unsigned int passive :1; /* Don't die if we don't get a response */
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unsigned int silent :1; /* Wait for the other end to start first */
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unsigned int restart :1; /* Restart vs. exit after close */
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unsigned int neg_mru :1; /* Negotiate the MRU? */
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unsigned int neg_asyncmap :1; /* Negotiate the async map? */
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#if PAP_SUPPORT
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unsigned int neg_upap :1; /* Ask for UPAP authentication? */
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#endif /* PAP_SUPPORT */
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#if CHAP_SUPPORT
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unsigned int neg_chap :1; /* Ask for CHAP authentication? */
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#endif /* CHAP_SUPPORT */
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#if EAP_SUPPORT
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unsigned int neg_eap :1; /* Ask for EAP authentication? */
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#endif /* EAP_SUPPORT */
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unsigned int neg_magicnumber :1; /* Ask for magic number? */
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unsigned int neg_pcompression :1; /* HDLC Protocol Field Compression? */
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unsigned int neg_accompression :1; /* HDLC Address/Control Field Compression? */
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#if LQR_SUPPORT
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unsigned int neg_lqr :1; /* Negotiate use of Link Quality Reports */
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#endif /* LQR_SUPPORT */
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unsigned int neg_cbcp :1; /* Negotiate use of CBCP */
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#ifdef HAVE_MULTILINK
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unsigned int neg_mrru :1; /* negotiate multilink MRRU */
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#endif /* HAVE_MULTILINK */
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unsigned int neg_ssnhf :1; /* negotiate short sequence numbers */
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unsigned int neg_endpoint :1; /* negotiate endpoint discriminator */
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u16_t mru; /* Value of MRU */
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#ifdef HAVE_MULTILINK
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u16_t mrru; /* Value of MRRU, and multilink enable */
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#endif /* MULTILINK */
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#if CHAP_SUPPORT
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u8_t chap_mdtype; /* which MD types (hashing algorithm) */
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#endif /* CHAP_SUPPORT */
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u32_t asyncmap; /* Value of async map */
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u32_t magicnumber;
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u8_t numloops; /* Number of loops during magic number neg. */
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#if LQR_SUPPORT
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u32_t lqr_period; /* Reporting period for LQR 1/100ths second */
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#endif /* LQR_SUPPORT */
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struct epdisc endpoint; /* endpoint discriminator */
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} lcp_options;
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void lcp_open(ppp_pcb *pcb);
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void lcp_close(ppp_pcb *pcb, const char *reason);
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void lcp_lowerup(ppp_pcb *pcb);
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void lcp_lowerdown(ppp_pcb *pcb);
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void lcp_sprotrej(ppp_pcb *pcb, u_char *p, int len); /* send protocol reject */
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extern const struct protent lcp_protent;
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#if 0 /* moved to opt.h */
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/* Default number of times we receive our magic number from the peer
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before deciding the link is looped-back. */
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#define DEFLOOPBACKFAIL 10
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#endif /* moved to opt.h */
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#endif /* LCP_H */
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#endif /* PPP_SUPPORT */
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