131 lines
4.9 KiB
C
131 lines
4.9 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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* $Id: lcp.h,v 1.2 2000/07/25 20:23:51 kai Exp $
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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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#define CI_MPMRRU 17
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#define CI_MPSHORTSEQ 18
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#define CI_MPDISCRIMINATOR 19
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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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/*
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* Type constants for the CI_CALLBACK field. Types 0..4 are RFC 1570
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* callback codes that tell the peer how to interpret the callback
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* message. Type 6 requests callback negotiation by CBCP.
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*/
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#define CB_AUTH 0 /* cb msg is not used */
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#define CB_DIALSTRING 1 /* cb msg is a system specific dial string */
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#define CB_LOCATIONID 2 /* cb msg is a location identifier */
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#define CB_PHONENO 3 /* cb msg is a E.164 (i.e. phone) number */
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#define CB_NAME 4 /* cb msg is a name */
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#define CB_CBCP 6 /* callback will be negotiated via cbcp */
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struct callback_opts {
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int neg_cbcp : 1; /* Enable CBCP callback negotiation */
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int neg_rfc : 1; /* Enable RFC 1570 callback negotiation */
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int rfc_preferred : 1; /* Try RFC 1570 callback negotiation first */
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int type; /* callback type as defined above */
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unsigned char *message; /* callback message (phone number in most cases) */
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int mlen; /* length of callback message */
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int delay; /* callback delay for cbcp */
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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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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_mpshortseq : 1; /* MP 12 bit instead of 24 bit sequence numbers */
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int neg_mpdiscr : 1; /* MP protocol ? */
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int neg_mpmrru : 1;
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int neg_mp : 1;
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int neg_callback : 1; /* Negotiate callback */
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u_char mp_class; /* MP discri. class */
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u_char mp_addr[20]; /* MP discri. addr */
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u_char mp_alen;
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u_short mp_mrru; /* MP mrru */
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u_char cb_type;
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u_char cb_num[20];
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u_char cb_numlen;
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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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struct callback_opts cbopt; /* Callback options */
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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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extern struct protent lcp_protent;
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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 __P((int));
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void lcp_close __P((int,char *));
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void lcp_lowerup __P((int));
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void lcp_lowerdown __P((int));
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void lcp_sprotrej __P((int, u_char *, int));
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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 5
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