/* $OpenBSD: lcp.h,v 1.4 1996/12/23 13:22:43 mickey Exp $ */ /* * lcp.h - Link Control Protocol definitions. * * Copyright (c) 1989 Carnegie Mellon University. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by Carnegie Mellon University. The name of the * University may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ /* * Options. */ #define CI_MRU 1 /* Maximum Receive Unit */ #define CI_ASYNCMAP 2 /* Async Control Character Map */ #define CI_AUTHTYPE 3 /* Authentication Type */ #define CI_QUALITY 4 /* Quality Protocol */ #define CI_MAGICNUMBER 5 /* Magic Number */ #define CI_PCOMPRESSION 7 /* Protocol Field Compression */ #define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */ #define CI_CALLBACK 13 /* callback */ /* * LCP-specific packet types. */ #define PROTREJ 8 /* Protocol Reject */ #define ECHOREQ 9 /* Echo Request */ #define ECHOREP 10 /* Echo Reply */ #define DISCREQ 11 /* Discard Request */ #define CBCP_OPT 6 /* Use callback control protocol */ /* * The state of options is described by an lcp_options structure. */ typedef struct lcp_options { int passive : 1; /* Don't die if we don't get a response */ int silent : 1; /* Wait for the other end to start first */ int restart : 1; /* Restart vs. exit after close */ int neg_mru : 1; /* Negotiate the MRU? */ int neg_asyncmap : 1; /* Negotiate the async map? */ int neg_upap : 1; /* Ask for UPAP authentication? */ int neg_chap : 1; /* Ask for CHAP authentication? */ int neg_magicnumber : 1; /* Ask for magic number? */ int neg_pcompression : 1; /* HDLC Protocol Field Compression? */ int neg_accompression : 1; /* HDLC Address/Control Field Compression? */ int neg_lqr : 1; /* Negotiate use of Link Quality Reports */ int neg_cbcp : 1; /* Negotiate use of CBCP */ u_short mru; /* Value of MRU */ u_char chap_mdtype; /* which MD type (hashing algorithm) */ u_int32_t asyncmap; /* Value of async map */ u_int32_t magicnumber; int numloops; /* Number of loops during magic number neg. */ u_int32_t lqr_period; /* Reporting period for LQR 1/100ths second */ } lcp_options; extern fsm lcp_fsm[]; extern lcp_options lcp_wantoptions[]; extern lcp_options lcp_gotoptions[]; extern lcp_options lcp_allowoptions[]; extern lcp_options lcp_hisoptions[]; extern u_int32_t xmit_accm[][8]; #define DEFMRU 1500 /* Try for this */ #define MINMRU 128 /* No MRUs below this */ #define MAXMRU 16384 /* Normally limit MRU to this */ void lcp_open __P((int)); void lcp_close __P((int, char *)); void lcp_lowerup __P((int)); void lcp_lowerdown __P((int)); void lcp_sprotrej __P((int, u_char *, int)); /* send protocol reject */ extern struct protent lcp_protent; /* Default number of times we receive our magic number from the peer before deciding the link is looped-back. */ #define DEFLOOPBACKFAIL 10