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Diffstat (limited to 'usr.sbin/ppp/fsm.h')
| -rw-r--r-- | usr.sbin/ppp/fsm.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/usr.sbin/ppp/fsm.h b/usr.sbin/ppp/fsm.h new file mode 100644 index 00000000000..e2f95d44fde --- /dev/null +++ b/usr.sbin/ppp/fsm.h @@ -0,0 +1,132 @@ +/* + * Written by Toshiharu OHNO (tony-o@iij.ad.jp) + * + * Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd. + * + * Redistribution and use in source and binary forms are permitted + * provided that the above copyright notice and this paragraph are + * duplicated in all such forms and that any documentation, + * advertising materials, and other materials related to such + * distribution and use acknowledge that the software was developed + * by the Internet Initiative Japan. The name of the + * IIJ may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + * + * $Id: fsm.h,v 1.1 1997/11/23 20:27:33 brian Exp $ + * + * TODO: + */ + +/* + * State of machine + */ +#define ST_INITIAL 0 +#define ST_STARTING 1 +#define ST_CLOSED 2 +#define ST_STOPPED 3 +#define ST_CLOSING 4 +#define ST_STOPPING 5 +#define ST_REQSENT 6 +#define ST_ACKRCVD 7 +#define ST_ACKSENT 8 +#define ST_OPENED 9 + +#define ST_MAX 10 +#define ST_UNDEF -1 + +#define MODE_REQ 0 +#define MODE_NAK 1 +#define MODE_REJ 2 +#define MODE_NOP 3 + +#define OPEN_ACTIVE 0 +#define OPEN_PASSIVE 1 + +struct fsm { + const char *name; /* Name of protocol */ + u_short proto; /* Protocol number */ + u_short max_code; + int open_mode; + int state; /* State of the machine */ + int reqid; /* Next request id */ + int restart; /* Restart counter value */ + int maxconfig; + + int reqcode; /* Request code sent */ + struct pppTimer FsmTimer; /* Restart Timer */ + + /* + * This timer times the ST_STOPPED state out after the given value + * (specified via "set stopped ..."). Although this isn't specified in the + * rfc, the rfc *does* say that "the application may use higher level + * timers to avoid deadlock". The StoppedTimer takes effect when the other + * side ABENDs rather than going into ST_ACKSENT (and sending the ACK), + * causing ppp to time out and drop into ST_STOPPED. At this point, + * nothing will change this state :-( + */ + struct pppTimer StoppedTimer; + int LogLevel; + + void (*LayerUp) (struct fsm *); + void (*LayerDown) (struct fsm *); + void (*LayerStart) (struct fsm *); + void (*LayerFinish) (struct fsm *); + void (*InitRestartCounter) (struct fsm *); + void (*SendConfigReq) (struct fsm *); + void (*SendTerminateReq) (struct fsm *); + void (*SendTerminateAck) (struct fsm *); + void (*DecodeConfig) (u_char *, int, int); +}; + +struct fsmheader { + u_char code; /* Request code */ + u_char id; /* Identification */ + u_short length; /* Length of packet */ +}; + +#define CODE_CONFIGREQ 1 +#define CODE_CONFIGACK 2 +#define CODE_CONFIGNAK 3 +#define CODE_CONFIGREJ 4 +#define CODE_TERMREQ 5 +#define CODE_TERMACK 6 +#define CODE_CODEREJ 7 +#define CODE_PROTOREJ 8 +#define CODE_ECHOREQ 9 /* Used in LCP */ +#define CODE_ECHOREP 10 /* Used in LCP */ +#define CODE_DISCREQ 11 +#define CODE_IDENT 12 /* Used in LCP Extension */ +#define CODE_TIMEREM 13 /* Used in LCP Extension */ +#define CODE_RESETREQ 14 /* Used in CCP */ +#define CODE_RESETACK 15 /* Used in CCP */ + +struct fsmcodedesc { + void (*action) (struct fsm *, struct fsmheader *, struct mbuf *); + const char *name; +}; + +struct fsmconfig { + u_char type; + u_char length; +}; + +extern u_char AckBuff[200]; +extern u_char NakBuff[200]; +extern u_char RejBuff[100]; +extern u_char ReqBuff[200]; +extern u_char *ackp; +extern u_char *nakp; +extern u_char *rejp; + +extern char const *StateNames[]; + +extern void FsmInit(struct fsm *); +extern void FsmOutput(struct fsm *, u_int, u_int, u_char *, int); +extern void FsmOpen(struct fsm *); +extern void FsmUp(struct fsm *); +extern void FsmDown(struct fsm *); +extern void FsmInput(struct fsm *, struct mbuf *); +extern void FsmClose(struct fsm *); |