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1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
138 lines
3.9 KiB
C
138 lines
3.9 KiB
C
/*
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* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
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*
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* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the Internet Initiative Japan. The name of the
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* IIJ may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $FreeBSD$
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*
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* TODO:
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*/
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#ifndef _FSM_H_
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#define _FSM_H_
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#include "defs.h"
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#include <netinet/in.h>
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#include "timeout.h"
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#include "cdefs.h"
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/*
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* State of machine
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*/
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#define ST_INITIAL 0
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#define ST_STARTING 1
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#define ST_CLOSED 2
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#define ST_STOPPED 3
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#define ST_CLOSING 4
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#define ST_STOPPING 5
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#define ST_REQSENT 6
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#define ST_ACKRCVD 7
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#define ST_ACKSENT 8
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#define ST_OPENED 9
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#define ST_MAX 10
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#define ST_UNDEF -1
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#define MODE_REQ 0
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#define MODE_NAK 1
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#define MODE_REJ 2
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#define MODE_NOP 3
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#define OPEN_ACTIVE 0
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#define OPEN_PASSIVE 1
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struct fsm {
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char *name; /* Name of protocol */
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u_short proto; /* Protocol number */
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u_short max_code;
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int open_mode;
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int state; /* State of the machine */
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int reqid; /* Next request id */
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int restart; /* Restart counter value */
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int maxconfig;
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int reqcode; /* Request code sent */
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struct pppTimer FsmTimer; /* Restart Timer */
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void (*LayerUp) __P((struct fsm *));
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void (*LayerDown) __P((struct fsm *));
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void (*LayerStart) __P((struct fsm *));
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void (*LayerFinish) __P((struct fsm *));
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void (*InitRestartCounter) __P((struct fsm *));
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void (*SendConfigReq) __P((struct fsm *));
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void (*SendTerminateReq) __P((struct fsm *));
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void (*SendTerminateAck) __P((struct fsm *));
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void (*DecodeConfig) __P((u_char *, int, int));
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};
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struct fsmheader {
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u_char code; /* Request code */
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u_char id; /* Identification */
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u_short length; /* Length of packet */
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};
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#define CODE_CONFIGREQ 1
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#define CODE_CONFIGACK 2
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#define CODE_CONFIGNAK 3
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#define CODE_CONFIGREJ 4
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#define CODE_TERMREQ 5
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#define CODE_TERMACK 6
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#define CODE_CODEREJ 7
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#define CODE_PROTOREJ 8
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#define CODE_ECHOREQ 9 /* Used in LCP */
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#define CODE_ECHOREP 10 /* Used in LCP */
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#define CODE_DISCREQ 11
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#define CODE_IDENT 12 /* Used in LCP Extension */
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#define CODE_TIMEREM 13 /* Used in LCP Extension */
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#define CODE_RESETREQ 14 /* Used in CCP */
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#define CODE_RESETACK 15 /* Used in CCP */
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struct fsmcodedesc {
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void (*action) __P((struct fsm *, struct fsmheader *, struct mbuf *));
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char *name;
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};
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struct fsmconfig {
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u_char type;
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u_char length;
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};
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u_char AckBuff[200];
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u_char NakBuff[200];
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u_char RejBuff[100];
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u_char ReqBuff[200];
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u_char *ackp, *nakp, *rejp;
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extern char const *StateNames[];
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extern void FsmInit __P((struct fsm *));
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extern void NewState __P((struct fsm *, int));
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extern void FsmOutput __P((struct fsm *, u_int, u_int, u_char *, int));
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extern void FsmOpen __P((struct fsm *));
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extern void FsmUp __P((struct fsm *));
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extern void FsmDown __P((struct fsm *));
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extern void FsmInput __P((struct fsm *, struct mbuf *));
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extern void FsmRecvConfigReq __P((struct fsm *, struct fsmheader *, struct mbuf *));
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extern void FsmRecvConfigAck __P((struct fsm *, struct fsmheader *, struct mbuf *));
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extern void FsmRecvConfigNak __P((struct fsm *, struct fsmheader *, struct mbuf *));
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extern void FsmRecvTermReq __P((struct fsm *, struct fsmheader *, struct mbuf *));
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extern void FsmRecvTermAck __P((struct fsm *, struct fsmheader *, struct mbuf *));
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extern void FsmClose __P((struct fsm *fp));
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extern struct fsm LcpFsm, IpcpFsm, CcpFsm;
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#endif /* _FSM_H_ */
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