| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 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 2008-08-04 06:11:51 winfred 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_PCOMPRESSION 7 /* Protocol Field Compression */ |
| 31 | #define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */ |
| 32 | #define CI_CALLBACK 13 /* callback */ |
| 33 | #define CI_MRRU 17 /* max reconstructed receive unit; multilink */ |
| 34 | #define CI_SSNHF 18 /* short sequence numbers for multilink */ |
| 35 | #define CI_EPDISC 19 /* endpoint discriminator */ |
| 36 | |
| 37 | /* |
| 38 | * LCP-specific packet types. |
| 39 | */ |
| 40 | #define PROTREJ 8 /* Protocol Reject */ |
| 41 | #define ECHOREQ 9 /* Echo Request */ |
| 42 | #define ECHOREP 10 /* Echo Reply */ |
| 43 | #define DISCREQ 11 /* Discard Request */ |
| 44 | #define CBCP_OPT 6 /* Use callback control protocol */ |
| 45 | |
| 46 | /* |
| 47 | * The state of options is described by an lcp_options structure. |
| 48 | */ |
| 49 | typedef struct lcp_options { |
| 50 | bool passive; /* Don't die if we don't get a response */ |
| 51 | bool silent; /* Wait for the other end to start first */ |
| 52 | bool restart; /* Restart vs. exit after close */ |
| 53 | bool neg_mru; /* Negotiate the MRU? */ |
| 54 | bool neg_asyncmap; /* Negotiate the async map? */ |
| 55 | bool neg_upap; /* Ask for UPAP authentication? */ |
| 56 | bool neg_chap; /* Ask for CHAP authentication? */ |
| 57 | bool neg_magicnumber; /* Ask for magic number? */ |
| 58 | bool neg_pcompression; /* HDLC Protocol Field Compression? */ |
| 59 | bool neg_accompression; /* HDLC Address/Control Field Compression? */ |
| 60 | bool neg_lqr; /* Negotiate use of Link Quality Reports */ |
| 61 | bool neg_cbcp; /* Negotiate use of CBCP */ |
| 62 | bool use_digest; |
| 63 | bool use_chapms; |
| 64 | bool use_chapms_v2; |
| 65 | bool neg_mrru; /* negotiate multilink MRRU */ |
| 66 | bool neg_ssnhf; /* negotiate short sequence numbers */ |
| 67 | bool neg_endpoint; /* negotiate endpoint discriminator */ |
| 68 | int mru; /* Value of MRU */ |
| 69 | int mrru; /* Value of MRRU, and multilink enable */ |
| 70 | u_char chap_mdtype; /* which MD type (hashing algorithm) */ |
| 71 | u_int32_t asyncmap; /* Value of async map */ |
| 72 | u_int32_t magicnumber; |
| 73 | int numloops; /* Number of loops during magic number neg. */ |
| 74 | u_int32_t lqr_period; /* Reporting period for LQR 1/100ths second */ |
| 75 | struct epdisc endpoint; /* endpoint discriminator */ |
| 76 | } lcp_options; |
| 77 | |
| 78 | extern fsm lcp_fsm[]; |
| 79 | extern lcp_options lcp_wantoptions[]; |
| 80 | extern lcp_options lcp_gotoptions[]; |
| 81 | extern lcp_options lcp_allowoptions[]; |
| 82 | extern lcp_options lcp_hisoptions[]; |
| 83 | |
| 84 | #define DEFMRU 1500 /* Try for this */ |
| 85 | #define MINMRU 128 /* No MRUs below this */ |
| 86 | #define MAXMRU 16384 /* Normally limit MRU to this */ |
| 87 | |
| 88 | void lcp_open __P((int)); |
| 89 | void lcp_close __P((int, char *)); |
| 90 | void lcp_lowerup __P((int)); |
| 91 | void lcp_lowerdown __P((int)); |
| 92 | void lcp_sprotrej __P((int, u_char *, int)); /* send protocol reject */ |
| 93 | |
| 94 | extern struct protent lcp_protent; |
| 95 | |
| 96 | /* Default number of times we receive our magic number from the peer |
| 97 | before deciding the link is looped-back. */ |
| 98 | #define DEFLOOPBACKFAIL 10 |