| /* |
| * lcp.h - Link Control Protocol definitions. |
| * |
| * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The name "Carnegie Mellon University" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For permission or any legal |
| * details, please contact |
| * Office of Technology Transfer |
| * Carnegie Mellon University |
| * 5000 Forbes Avenue |
| * Pittsburgh, PA 15213-3890 |
| * (412) 268-4387, fax: (412) 268-7395 |
| * tech-transfer@andrew.cmu.edu |
| * |
| * 4. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by Computing Services |
| * at Carnegie Mellon University (http://www.cmu.edu/computing/)." |
| * |
| * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
| * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE |
| * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN |
| * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
| * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * Options. |
| */ |
| #define CI_VENDOR 0 /* Vendor Specific */ |
| #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_FCSALTERN 9 /* FCS-Alternatives */ |
| #define CI_SDP 10 /* Self-Describing-Pad */ |
| #define CI_NUMBERED 11 /* Numbered-Mode */ |
| #define CI_CALLBACK 13 /* callback */ |
| #define CI_MRRU 17 /* max reconstructed receive unit; multilink */ |
| #define CI_SSNHF 18 /* short sequence numbers for multilink */ |
| #define CI_EPDISC 19 /* endpoint discriminator */ |
| #define CI_MPPLUS 22 /* Multi-Link-Plus-Procedure */ |
| #define CI_LDISC 23 /* Link-Discriminator */ |
| #define CI_LCPAUTH 24 /* LCP Authentication */ |
| #define CI_COBS 25 /* Consistent Overhead Byte Stuffing */ |
| #define CI_PREFELIS 26 /* Prefix Elision */ |
| #define CI_MPHDRFMT 27 /* MP Header Format */ |
| #define CI_I18N 28 /* Internationalization */ |
| #define CI_SDL 29 /* Simple Data Link */ |
| |
| /* |
| * LCP-specific packet types (code numbers). |
| */ |
| #define PROTREJ 8 /* Protocol Reject */ |
| #define ECHOREQ 9 /* Echo Request */ |
| #define ECHOREP 10 /* Echo Reply */ |
| #define DISCREQ 11 /* Discard Request */ |
| #define IDENTIF 12 /* Identification */ |
| #define TIMEREM 13 /* Time Remaining */ |
| |
| /* Value used as data for CI_CALLBACK option */ |
| #define CBCP_OPT 6 /* Use callback control protocol */ |
| |
| /* |
| * The state of options is described by an lcp_options structure. |
| */ |
| typedef struct lcp_options { |
| bool passive; /* Don't die if we don't get a response */ |
| bool silent; /* Wait for the other end to start first */ |
| bool restart; /* Restart vs. exit after close */ |
| bool neg_mru; /* Negotiate the MRU? */ |
| bool neg_asyncmap; /* Negotiate the async map? */ |
| bool neg_upap; /* Ask for UPAP authentication? */ |
| bool neg_chap; /* Ask for CHAP authentication? */ |
| bool neg_eap; /* Ask for EAP authentication? */ |
| bool neg_magicnumber; /* Ask for magic number? */ |
| bool neg_pcompression; /* HDLC Protocol Field Compression? */ |
| bool neg_accompression; /* HDLC Address/Control Field Compression? */ |
| bool neg_lqr; /* Negotiate use of Link Quality Reports */ |
| bool neg_cbcp; /* Negotiate use of CBCP */ |
| bool neg_mrru; /* negotiate multilink MRRU */ |
| bool neg_ssnhf; /* negotiate short sequence numbers */ |
| bool neg_endpoint; /* negotiate endpoint discriminator */ |
| int mru; /* Value of MRU */ |
| int mrru; /* Value of MRRU, and multilink enable */ |
| u_char chap_mdtype; /* which MD types (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 */ |
| struct epdisc endpoint; /* endpoint discriminator */ |
| } 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[]; |
| |
| #define DEFMRU 1500 /* Try for this */ |
| #define MINMRU 128 /* No MRUs below this */ |
| #define MAXMRU 16384 /* Normally limit MRU to this */ |
| |
| void lcp_open(int); |
| void lcp_close(int, char *); |
| void lcp_lowerup(int); |
| void lcp_lowerdown(int); |
| void lcp_sprotrej(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 |
