2 * lcp.h - Link Control Protocol definitions.
4 * Copyright (c) 1989 Carnegie Mellon University.
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.
19 * $Id: lcp.h,v 1.1.1.4 2003/10/14 08:09:53 sparq Exp $
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 */
38 * LCP-specific packet types.
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 */
47 * The state of options is described by an lcp_options structure.
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 neg_mrru
; /* negotiate multilink MRRU */
63 bool neg_ssnhf
; /* negotiate short sequence numbers */
64 bool neg_endpoint
; /* negotiate endpoint discriminator */
65 int mru
; /* Value of MRU */
66 int mrru
; /* Value of MRRU, and multilink enable */
67 u_char chap_mdtype
; /* which MD type (hashing algorithm) */
68 u_int32_t asyncmap
; /* Value of async map */
69 u_int32_t magicnumber
;
70 int numloops
; /* Number of loops during magic number neg. */
71 u_int32_t lqr_period
; /* Reporting period for LQR 1/100ths second */
72 struct epdisc endpoint
; /* endpoint discriminator */
76 extern lcp_options lcp_wantoptions
[];
77 extern lcp_options lcp_gotoptions
[];
78 extern lcp_options lcp_allowoptions
[];
79 extern lcp_options lcp_hisoptions
[];
81 #define DEFMRU 1500 /* Try for this */
82 #define MINMRU 128 /* No MRUs below this */
83 #define MAXMRU 16384 /* Normally limit MRU to this */
84 //Fixed by crazy 20070424: bug id 6439(20070423)
85 #define REJECT_MAXMRU 1492 /* Reject when MRU which is received from server is larger than this value */
87 void lcp_open
__P((int));
88 void lcp_close
__P((int, char *));
89 void lcp_lowerup
__P((int));
90 void lcp_lowerdown
__P((int));
91 void lcp_sprotrej
__P((int, u_char
*, int)); /* send protocol reject */
93 extern struct protent lcp_protent
;
95 /* Default number of times we receive our magic number from the peer
96 before deciding the link is looped-back. */
97 #define DEFLOOPBACKFAIL 10