release/src/router/ppp/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  * $Id: lcp.h,v 1.1.1.4 2003/10/14 08:09:53 sparq 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 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 */
  73 } lcp_options;
  74
  75 extern fsm lcp_fsm[];
  76 extern lcp_options lcp_wantoptions[];
  77 extern lcp_options lcp_gotoptions[];
  78 extern lcp_options lcp_allowoptions[];
  79 extern lcp_options lcp_hisoptions[];
  80
  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 */
  86
  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 */
  92
  93 extern struct protent lcp_protent;
  94
  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