fsm.h revision 31343
16059Samurai/* 26059Samurai * Written by Toshiharu OHNO (tony-o@iij.ad.jp) 36059Samurai * 46059Samurai * Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd. 56059Samurai * 66059Samurai * Redistribution and use in source and binary forms are permitted 76059Samurai * provided that the above copyright notice and this paragraph are 86059Samurai * duplicated in all such forms and that any documentation, 96059Samurai * advertising materials, and other materials related to such 106059Samurai * distribution and use acknowledge that the software was developed 116059Samurai * by the Internet Initiative Japan. The name of the 126059Samurai * IIJ may not be used to endorse or promote products derived 136059Samurai * from this software without specific prior written permission. 146059Samurai * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 156059Samurai * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 166059Samurai * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 176059Samurai * 1831343Sbrian * $Id: fsm.h,v 1.11 1997/10/26 01:02:39 brian Exp $ 196059Samurai * 206059Samurai * TODO: 216059Samurai */ 226735Samurai 236059Samurai/* 246059Samurai * State of machine 256059Samurai */ 266059Samurai#define ST_INITIAL 0 276059Samurai#define ST_STARTING 1 286059Samurai#define ST_CLOSED 2 296059Samurai#define ST_STOPPED 3 306059Samurai#define ST_CLOSING 4 316059Samurai#define ST_STOPPING 5 326059Samurai#define ST_REQSENT 6 336059Samurai#define ST_ACKRCVD 7 346059Samurai#define ST_ACKSENT 8 356059Samurai#define ST_OPENED 9 366059Samurai 376059Samurai#define ST_MAX 10 386059Samurai#define ST_UNDEF -1 396059Samurai 406059Samurai#define MODE_REQ 0 416059Samurai#define MODE_NAK 1 426059Samurai#define MODE_REJ 2 436735Samurai#define MODE_NOP 3 446059Samurai 456059Samurai#define OPEN_ACTIVE 0 466059Samurai#define OPEN_PASSIVE 1 476059Samurai 486059Samuraistruct fsm { 4931343Sbrian const char *name; /* Name of protocol */ 506059Samurai u_short proto; /* Protocol number */ 516059Samurai u_short max_code; 5228679Sbrian int open_mode; 5328679Sbrian int state; /* State of the machine */ 5428679Sbrian int reqid; /* Next request id */ 5528679Sbrian int restart; /* Restart counter value */ 5628679Sbrian int maxconfig; 576059Samurai 5828679Sbrian int reqcode; /* Request code sent */ 596059Samurai struct pppTimer FsmTimer; /* Restart Timer */ 606059Samurai 6128461Sbrian /* 6228461Sbrian * This timer times the ST_STOPPED state out after the given value 6328679Sbrian * (specified via "set stopped ..."). Although this isn't specified in the 6428679Sbrian * rfc, the rfc *does* say that "the application may use higher level 6528679Sbrian * timers to avoid deadlock". The StoppedTimer takes effect when the other 6628679Sbrian * side ABENDs rather than going into ST_ACKSENT (and sending the ACK), 6728679Sbrian * causing ppp to time out and drop into ST_STOPPED. At this point, 6828679Sbrian * nothing will change this state :-( 6928461Sbrian */ 7028461Sbrian struct pppTimer StoppedTimer; 7128461Sbrian int LogLevel; 7228461Sbrian 7328679Sbrian void (*LayerUp) (struct fsm *); 7428679Sbrian void (*LayerDown) (struct fsm *); 7528679Sbrian void (*LayerStart) (struct fsm *); 7628679Sbrian void (*LayerFinish) (struct fsm *); 7728679Sbrian void (*InitRestartCounter) (struct fsm *); 7828679Sbrian void (*SendConfigReq) (struct fsm *); 7928679Sbrian void (*SendTerminateReq) (struct fsm *); 8028679Sbrian void (*SendTerminateAck) (struct fsm *); 8128679Sbrian void (*DecodeConfig) (u_char *, int, int); 826059Samurai}; 836059Samurai 846059Samuraistruct fsmheader { 8528679Sbrian u_char code; /* Request code */ 8628679Sbrian u_char id; /* Identification */ 8728679Sbrian u_short length; /* Length of packet */ 886059Samurai}; 896059Samurai 906059Samurai#define CODE_CONFIGREQ 1 916059Samurai#define CODE_CONFIGACK 2 926059Samurai#define CODE_CONFIGNAK 3 936059Samurai#define CODE_CONFIGREJ 4 946059Samurai#define CODE_TERMREQ 5 956059Samurai#define CODE_TERMACK 6 966059Samurai#define CODE_CODEREJ 7 976059Samurai#define CODE_PROTOREJ 8 9828679Sbrian#define CODE_ECHOREQ 9 /* Used in LCP */ 9928679Sbrian#define CODE_ECHOREP 10 /* Used in LCP */ 1006059Samurai#define CODE_DISCREQ 11 10128679Sbrian#define CODE_IDENT 12 /* Used in LCP Extension */ 10228679Sbrian#define CODE_TIMEREM 13 /* Used in LCP Extension */ 10328679Sbrian#define CODE_RESETREQ 14 /* Used in CCP */ 10428679Sbrian#define CODE_RESETACK 15 /* Used in CCP */ 1056059Samurai 1066059Samuraistruct fsmcodedesc { 10728679Sbrian void (*action) (struct fsm *, struct fsmheader *, struct mbuf *); 10831343Sbrian const char *name; 1096059Samurai}; 1106059Samurai 1116059Samuraistruct fsmconfig { 1126059Samurai u_char type; 1136059Samurai u_char length; 1146059Samurai}; 1156059Samurai 11630715Sbrianextern u_char AckBuff[200]; 11730715Sbrianextern u_char NakBuff[200]; 11830715Sbrianextern u_char RejBuff[100]; 11930715Sbrianextern u_char ReqBuff[200]; 12030715Sbrianextern u_char *ackp; 12130715Sbrianextern u_char *nakp; 12230715Sbrianextern u_char *rejp; 1236059Samurai 12430715Sbrianextern char const *StateNames[]; 1256059Samurai 12626516Sbrianextern void FsmInit(struct fsm *); 12726516Sbrianextern void FsmOutput(struct fsm *, u_int, u_int, u_char *, int); 12826516Sbrianextern void FsmOpen(struct fsm *); 12926516Sbrianextern void FsmUp(struct fsm *); 13026516Sbrianextern void FsmDown(struct fsm *); 13126516Sbrianextern void FsmInput(struct fsm *, struct mbuf *); 13230715Sbrianextern void FsmClose(struct fsm *); 133