| 1 | /* |
| 2 | * lcp.h - Link Control Protocol definitions. |
| 3 | * |
| 4 | * Copyright (c) 1989 Carnegie Mellon University. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms are permitted |
| 8 | * provided that the above copyright notice and this paragraph are |
| 9 | * duplicated in all such forms and that any documentation, |
| 10 | * advertising materials, and other materials related to such |
| 11 | * distribution and use acknowledge that the software was developed |
| 12 | * by Carnegie Mellon University. The name of the |
| 13 | * University may not be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 16 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 17 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 18 | * |
| 19 | * $Id: lcp.h,v 1.1 1993/11/11 03:54:25 paulus Exp $ |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * Options. |
| 24 | */ |
| 25 | #define CI_MRU 1 /* Maximum Receive Unit */ |
| 26 | #define CI_ASYNCMAP 2 /* Async Control Character Map */ |
| 27 | #define CI_AUTHTYPE 3 /* Authentication Type */ |
| 28 | #define CI_QUALITY 4 /* Quality Protocol */ |
| 29 | #define CI_MAGICNUMBER 5 /* Magic Number */ |
| 30 | #define CI_KEEPALIVE 6 /* Keep Alive Parameters - OBSOLETE */ |
| 31 | #define CI_PCOMPRESSION 7 /* Protocol Field Compression */ |
| 32 | #define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */ |
| 33 | |
| 34 | |
| 35 | /* |
| 36 | * The state of options is described by an lcp_options structure. |
| 37 | */ |
| 38 | typedef struct lcp_options { |
| 39 | int passive : 1; /* Don't die if we don't get a response */ |
| 40 | int silent : 1; /* Wait for the other end to start first */ |
| 41 | int restart : 1; /* Restart vs. exit after close */ |
| 42 | int neg_mru : 1; /* Negotiate the MRU? */ |
| 43 | int neg_asyncmap : 1; /* Negotiate the async map? */ |
| 44 | int neg_upap : 1; /* Ask for UPAP authentication? */ |
| 45 | int neg_chap : 1; /* Ask for CHAP authentication? */ |
| 46 | int neg_magicnumber : 1; /* Ask for magic number? */ |
| 47 | int neg_pcompression : 1; /* HDLC Protocol Field Compression? */ |
| 48 | int neg_accompression : 1; /* HDLC Address/Control Field Compression? */ |
| 49 | int neg_lqr : 1; /* Negotiate use of Link Quality Reports */ |
| 50 | u_short mru; /* Value of MRU */ |
| 51 | char chap_mdtype; /* which MD type (hashing algorithm) */ |
| 52 | u_long asyncmap; /* Value of async map */ |
| 53 | u_long magicnumber; |
| 54 | int numloops; /* Number of loops during magic number neg. */ |
| 55 | u_long lqr_period; /* Reporting period for link quality */ |
| 56 | } lcp_options; |
| 57 | |
| 58 | extern fsm lcp_fsm[]; |
| 59 | extern lcp_options lcp_wantoptions[]; |
| 60 | extern lcp_options lcp_gotoptions[]; |
| 61 | extern lcp_options lcp_allowoptions[]; |
| 62 | extern lcp_options lcp_hisoptions[]; |
| 63 | |
| 64 | #define DEFMRU 1500 /* Try for this */ |
| 65 | #define MINMRU 128 /* No MRUs below this */ |
| 66 | #define MAXMRU 16384 /* Normally limit MRU to this */ |
| 67 | |
| 68 | void lcp_init __ARGS((int)); |
| 69 | void lcp_open __ARGS((int)); |
| 70 | void lcp_close __ARGS((int)); |
| 71 | void lcp_lowerup __ARGS((int)); |
| 72 | void lcp_lowerdown __ARGS((int)); |
| 73 | void lcp_input __ARGS((int, u_char *, int)); |
| 74 | void lcp_protrej __ARGS((int)); |
| 75 | void lcp_sprotrej __ARGS((int, u_char *, int)); |
| 76 | |
| 77 | extern int lcp_warnloops; /* Warn about a loopback this often */ |
| 78 | #define DEFWARNLOOPS 10 /* Default value for above */ |