1 /* 2 * Written by Toshiharu OHNO (tony-o@iij.ad.jp) 3 * 4 * Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd. 5 * 6 * Redistribution and use in source and binary forms are permitted 7 * provided that the above copyright notice and this paragraph are 8 * duplicated in all such forms and that any documentation, 9 * advertising materials, and other materials related to such 10 * distribution and use acknowledge that the software was developed 11 * by the Internet Initiative Japan. The name of the 12 * IIJ may not be used to endorse or promote products derived 13 * from this software without specific prior written permission. 14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 16 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 17 * 18 * $Id:$ 19 * 20 * TODO: 21 */ 22 #ifndef _FSM_H_ 23 #define _FSM_H_ 24 25 #include "defs.h" 26 #include <netinet/in.h> 27 #include "timeout.h" 28 29 /* 30 * State of machine 31 */ 32 #define ST_INITIAL 0 33 #define ST_STARTING 1 34 #define ST_CLOSED 2 35 #define ST_STOPPED 3 36 #define ST_CLOSING 4 37 #define ST_STOPPING 5 38 #define ST_REQSENT 6 39 #define ST_ACKRCVD 7 40 #define ST_ACKSENT 8 41 #define ST_OPENED 9 42 43 #define ST_MAX 10 44 #define ST_UNDEF -1 45 46 #define MODE_REQ 0 47 #define MODE_NAK 1 48 #define MODE_REJ 2 49 50 #define OPEN_ACTIVE 0 51 #define OPEN_PASSIVE 1 52 53 struct fsm { 54 char *name; /* Name of protocol */ 55 u_short proto; /* Protocol number */ 56 u_short max_code; 57 int open_mode; 58 int state; /* State of the machine */ 59 int reqid; /* Next request id */ 60 int restart; /* Restart counter value */ 61 int maxconfig; 62 63 int reqcode; /* Request code sent */ 64 struct pppTimer FsmTimer; /* Restart Timer */ 65 66 void (*LayerUp)(); 67 void (*LayerDown)(); 68 void (*LayerStart)(); 69 void (*LayerFinish)(); 70 void (*InitRestartCounter)(); 71 void (*SendConfigReq)(); 72 void (*SendTerminateReq)(); 73 void (*SendTerminateAck)(); 74 void (*DecodeConfig)(); 75 }; 76 77 struct fsmheader { 78 u_char code; /* Request code */ 79 u_char id; /* Identification */ 80 u_short length; /* Length of packet */ 81 }; 82 83 #define CODE_CONFIGREQ 1 84 #define CODE_CONFIGACK 2 85 #define CODE_CONFIGNAK 3 86 #define CODE_CONFIGREJ 4 87 #define CODE_TERMREQ 5 88 #define CODE_TERMACK 6 89 #define CODE_CODEREJ 7 90 #define CODE_PROTOREJ 8 91 #define CODE_ECHOREQ 9 /* Used in LCP */ 92 #define CODE_ECHOREP 10 /* Used in LCP */ 93 #define CODE_DISCREQ 11 94 #define CODE_IDENT 12 /* Used in LCP Extension */ 95 #define CODE_TIMEREM 13 /* Used in LCP Extension */ 96 #define CODE_RESETREQ 14 /* Used in CCP */ 97 #define CODE_RESETACK 15 /* Used in CCP */ 98 99 struct fsmcodedesc { 100 void (*action)(); 101 char *name; 102 }; 103 104 struct fsmconfig { 105 u_char type; 106 u_char length; 107 }; 108 109 u_char AckBuff[200]; 110 u_char NakBuff[200]; 111 u_char RejBuff[100]; 112 u_char ReqBuff[200]; 113 114 u_char *ackp, *nakp, *rejp; 115 116 extern char *StateNames[]; 117 extern void FsmInit(struct fsm *); 118 extern void NewState(struct fsm *, int); 119 extern void FsmOutput(struct fsm *, u_int, u_int, u_char *, int); 120 extern void FsmOpen(struct fsm *); 121 extern void FsmUp(struct fsm *); 122 extern void FsmDown(struct fsm *); 123 extern void FsmInput(struct fsm *, struct mbuf *); 124 125 extern void FsmRecvConfigReq(struct fsm *, struct fsmheader *, struct mbuf *); 126 extern void FsmRecvConfigAck(struct fsm *, struct fsmheader *, struct mbuf *); 127 extern void FsmRecvConfigNak(struct fsm *, struct fsmheader *, struct mbuf *); 128 extern void FsmRecvTermReq(struct fsm *, struct fsmheader *, struct mbuf *); 129 extern void FsmRecvTermAck(struct fsm *, struct fsmheader *, struct mbuf *); 130 extern void FsmClose(struct fsm *fp); 131 132 extern struct fsm LcpFsm, IpcpFsm, CcpFsm; 133 134 #endif /* _FSM_H_ */ 135