usr.sbin/pppd/lcp.h

   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  * $FreeBSD: src/usr.sbin/pppd/lcp.h,v 1.7 1999/08/28 01:19:05 peter Exp $
  20  * $DragonFly: src/usr.sbin/pppd/lcp.h,v 1.3 2003/11/03 19:31:40 eirikn Exp $
  21  */
  22
  23 /*
  24  * Options.
  25  */
  26 #define CI_MRU          1       /* Maximum Receive Unit */
  27 #define CI_ASYNCMAP     2       /* Async Control Character Map */
  28 #define CI_AUTHTYPE     3       /* Authentication Type */
  29 #define CI_QUALITY      4       /* Quality Protocol */
  30 #define CI_MAGICNUMBER  5       /* Magic Number */
  31 #define CI_PCOMPRESSION 7       /* Protocol Field Compression */
  32 #define CI_ACCOMPRESSION 8      /* Address/Control Field Compression */
  33 #define CI_CALLBACK     13      /* callback */
  34
  35 /*
  36  * LCP-specific packet types.
  37  */
  38 #define PROTREJ         8       /* Protocol Reject */
  39 #define ECHOREQ         9       /* Echo Request */
  40 #define ECHOREP         10      /* Echo Reply */
  41 #define DISCREQ         11      /* Discard Request */
  42 #define CBCP_OPT        6       /* Use callback control protocol */
  43
  44 /*
  45  * The state of options is described by an lcp_options structure.
  46  */
  47 typedef struct lcp_options {
  48     int passive : 1;            /* Don't die if we don't get a response */
  49     int silent : 1;             /* Wait for the other end to start first */
  50     int restart : 1;            /* Restart vs. exit after close */
  51     int neg_mru : 1;            /* Negotiate the MRU? */
  52     int neg_asyncmap : 1;       /* Negotiate the async map? */
  53     int neg_upap : 1;           /* Ask for UPAP authentication? */
  54     int neg_chap : 1;           /* Ask for CHAP authentication? */
  55     int neg_magicnumber : 1;    /* Ask for magic number? */
  56     int neg_pcompression : 1;   /* HDLC Protocol Field Compression? */
  57     int neg_accompression : 1;  /* HDLC Address/Control Field Compression? */
  58     int neg_lqr : 1;            /* Negotiate use of Link Quality Reports */
  59     int neg_cbcp : 1;           /* Negotiate use of CBCP */
  60     u_short mru;                /* Value of MRU */
  61     u_char chap_mdtype;         /* which MD type (hashing algorithm) */
  62     u_int32_t asyncmap;         /* Value of async map */
  63     u_int32_t magicnumber;
  64     int numloops;               /* Number of loops during magic number neg. */
  65     u_int32_t lqr_period;       /* Reporting period for LQR 1/100ths second */
  66 } lcp_options;
  67
  68 extern fsm lcp_fsm[];
  69 extern lcp_options lcp_wantoptions[];
  70 extern lcp_options lcp_gotoptions[];
  71 extern lcp_options lcp_allowoptions[];
  72 extern lcp_options lcp_hisoptions[];
  73 extern u_int32_t xmit_accm[][8];
  74
  75 #define DEFMRU  1500            /* Try for this */
  76 #define MINMRU  128             /* No MRUs below this */
  77 #define MAXMRU  16384           /* Normally limit MRU to this */
  78
  79 void lcp_open(int);
  80 void lcp_close(int, char *);
  81 void lcp_lowerup(int);
  82 void lcp_lowerdown(int);
  83 void lcp_sprotrej(int, u_char *, int);  /* send protocol reject */
  84
  85 extern struct protent lcp_protent;
  86
  87 /* Default number of times we receive our magic number from the peer
  88    before deciding the link is looped-back. */
  89 #define DEFLOOPBACKFAIL 10