1 //==========================================================================
5 //==========================================================================
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48 //==========================================================================
51 * lcp.h - Link Control Protocol definitions.
53 * Copyright (c) 1989 Carnegie Mellon University.
54 * All rights reserved.
56 * Redistribution and use in source and binary forms are permitted
57 * provided that the above copyright notice and this paragraph are
58 * duplicated in all such forms and that any documentation,
59 * advertising materials, and other materials related to such
60 * distribution and use acknowledge that the software was developed
61 * by Carnegie Mellon University. The name of the
62 * University may not be used to endorse or promote products derived
63 * from this software without specific prior written permission.
64 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
65 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
66 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
68 * $FreeBSD: src/usr.sbin/pppd/lcp.h,v 1.7 1999/08/28 01:19:05 peter Exp $
74 #define CI_MRU 1 /* Maximum Receive Unit */
75 #define CI_ASYNCMAP 2 /* Async Control Character Map */
76 #define CI_AUTHTYPE 3 /* Authentication Type */
77 #define CI_QUALITY 4 /* Quality Protocol */
78 #define CI_MAGICNUMBER 5 /* Magic Number */
79 #define CI_PCOMPRESSION 7 /* Protocol Field Compression */
80 #define CI_ACCOMPRESSION 8 /* Address/Control Field Compression */
81 #define CI_CALLBACK 13 /* callback */
84 * LCP-specific packet types.
86 #define PROTREJ 8 /* Protocol Reject */
87 #define ECHOREQ 9 /* Echo Request */
88 #define ECHOREP 10 /* Echo Reply */
89 #define DISCREQ 11 /* Discard Request */
90 #define CBCP_OPT 6 /* Use callback control protocol */
93 * The state of options is described by an lcp_options structure.
95 typedef struct lcp_options {
96 int passive : 1; /* Don't die if we don't get a response */
97 int silent : 1; /* Wait for the other end to start first */
98 int restart : 1; /* Restart vs. exit after close */
99 int neg_mru : 1; /* Negotiate the MRU? */
100 int neg_asyncmap : 1; /* Negotiate the async map? */
101 int neg_upap : 1; /* Ask for UPAP authentication? */
102 int neg_chap : 1; /* Ask for CHAP authentication? */
103 int neg_magicnumber : 1; /* Ask for magic number? */
104 int neg_pcompression : 1; /* HDLC Protocol Field Compression? */
105 int neg_accompression : 1; /* HDLC Address/Control Field Compression? */
106 int neg_lqr : 1; /* Negotiate use of Link Quality Reports */
107 int neg_cbcp : 1; /* Negotiate use of CBCP */
108 u_short mru; /* Value of MRU */
109 u_char chap_mdtype; /* which MD type (hashing algorithm) */
110 u_int32_t asyncmap; /* Value of async map */
111 u_int32_t magicnumber;
112 int numloops; /* Number of loops during magic number neg. */
113 u_int32_t lqr_period; /* Reporting period for LQR 1/100ths second */
116 extern fsm lcp_fsm[];
117 extern lcp_options lcp_wantoptions[];
118 extern lcp_options lcp_gotoptions[];
119 extern lcp_options lcp_allowoptions[];
120 extern lcp_options lcp_hisoptions[];
121 extern u_int32_t xmit_accm[][8];
123 #define DEFMRU 1500 /* Try for this */
124 #define MINMRU 128 /* No MRUs below this */
125 #define MAXMRU 16384 /* Normally limit MRU to this */
127 void lcp_open __P((int));
128 void lcp_close __P((int, char *));
129 void lcp_lowerup __P((int));
130 void lcp_lowerdown __P((int));
131 void lcp_sprotrej __P((int, u_char *, int)); /* send protocol reject */
133 extern struct protent lcp_protent;
135 /* Default number of times we receive our magic number from the peer
136 before deciding the link is looped-back. */
137 #define DEFLOOPBACKFAIL 10