89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
/*
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* lcp.h - Link Control Protocol definitions.
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*
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* Copyright (c) 1989 Carnegie Mellon University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by Carnegie Mellon University. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $FreeBSD$
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*/
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/*
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* Options.
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*/
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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_CALLBACK 13 /* callback */
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/*
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* LCP-specific packet types.
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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 CBCP_OPT 6 /* Use callback control protocol */
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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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int passive : 1; /* Don't die if we don't get a response */
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int silent : 1; /* Wait for the other end to start first */
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int restart : 1; /* Restart vs. exit after close */
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int neg_mru : 1; /* Negotiate the MRU? */
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int neg_asyncmap : 1; /* Negotiate the async map? */
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int neg_upap : 1; /* Ask for UPAP authentication? */
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int neg_chap : 1; /* Ask for CHAP authentication? */
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int neg_magicnumber : 1; /* Ask for magic number? */
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int neg_pcompression : 1; /* HDLC Protocol Field Compression? */
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int neg_accompression : 1; /* HDLC Address/Control Field Compression? */
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int neg_lqr : 1; /* Negotiate use of Link Quality Reports */
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int neg_cbcp : 1; /* Negotiate use of CBCP */
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u_short mru; /* Value of MRU */
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u_char chap_mdtype; /* which MD type (hashing algorithm) */
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u_int32_t asyncmap; /* Value of async map */
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u_int32_t magicnumber;
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int numloops; /* Number of loops during magic number neg. */
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u_int32_t lqr_period; /* Reporting period for LQR 1/100ths second */
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} lcp_options;
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extern fsm lcp_fsm[];
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extern lcp_options lcp_wantoptions[];
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extern lcp_options lcp_gotoptions[];
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extern lcp_options lcp_allowoptions[];
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extern lcp_options lcp_hisoptions[];
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extern u_int32_t xmit_accm[][8];
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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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void lcp_open(int);
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void lcp_close(int, char *);
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void lcp_lowerup(int);
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void lcp_lowerdown(int);
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void lcp_sprotrej(int, u_char *, int); /* send protocol reject */
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extern struct protent lcp_protent;
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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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