/*
* fsm.h - {Link, IP} Control Protocol Finite State Machine definitions.
*
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
+ * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
*
- * 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 Carnegie Mellon University. The name of the
- * University 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.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
*
- * $Id: fsm.h,v 1.5 1995/05/19 03:17:35 paulus Exp $
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. The name "Carnegie Mellon University" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For permission or any legal
+ * details, please contact
+ * Office of Technology Transfer
+ * Carnegie Mellon University
+ * 5000 Forbes Avenue
+ * Pittsburgh, PA 15213-3890
+ * (412) 268-4387, fax: (412) 268-7395
+ * tech-transfer@andrew.cmu.edu
+ *
+ * 4. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Computing Services
+ * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
+ *
+ * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
+ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * $Id: fsm.h,v 1.10 2004/11/13 02:28:15 paulus Exp $
*/
/*
* Packet header = Code, id, length.
*/
-#define HEADERLEN (sizeof (u_char) + sizeof (u_char) + sizeof (u_short))
+#define HEADERLEN 4
/*
/*
- * Each FSM is described by a fsm_callbacks and a fsm structure.
+ * Each FSM is described by an fsm structure and fsm callbacks.
*/
-typedef struct fsm_callbacks {
- void (*resetci)(); /* Reset our Configuration Information */
- int (*cilen)(); /* Length of our Configuration Information */
- void (*addci)(); /* Add our Configuration Information */
- int (*ackci)(); /* ACK our Configuration Information */
- int (*nakci)(); /* NAK our Configuration Information */
- int (*rejci)(); /* Reject our Configuration Information */
- int (*reqci)(); /* Request peer's Configuration Information */
- void (*up)(); /* Called when fsm reaches OPENED state */
- void (*down)(); /* Called when fsm leaves OPENED state */
- void (*starting)(); /* Called when we want the lower layer */
- void (*finished)(); /* Called when we don't want the lower layer */
- void (*protreject)(); /* Called when Protocol-Reject received */
- void (*retransmit)(); /* Retransmission is necessary */
- int (*extcode)(); /* Called when unknown code received */
- char *proto_name; /* String name for protocol (for messages) */
-} fsm_callbacks;
-
-
typedef struct fsm {
int unit; /* Interface unit number */
int protocol; /* Data Link Layer Protocol field value */
int retransmits; /* Number of retransmissions left */
int maxtermtransmits; /* Maximum Terminate-Request transmissions */
int nakloops; /* Number of nak loops since last ack */
+ int rnakloops; /* Number of naks received */
int maxnakloops; /* Maximum number of nak loops tolerated */
- fsm_callbacks *callbacks; /* Callback routines */
+ struct fsm_callbacks *callbacks; /* Callback routines */
+ char *term_reason; /* Reason for closing protocol */
+ int term_reason_len; /* Length of term_reason */
} fsm;
+typedef struct fsm_callbacks {
+ void (*resetci)(fsm *); /* Reset our Configuration Information */
+ int (*cilen)(fsm *); /* Length of our Configuration Information */
+ void (*addci) /* Add our Configuration Information */
+ (fsm *, u_char *, int *);
+ int (*ackci) /* ACK our Configuration Information */
+ (fsm *, u_char *, int);
+ int (*nakci) /* NAK our Configuration Information */
+ (fsm *, u_char *, int, int);
+ int (*rejci) /* Reject our Configuration Information */
+ (fsm *, u_char *, int);
+ int (*reqci) /* Request peer's Configuration Information */
+ (fsm *, u_char *, int *, int);
+ void (*up)(fsm *); /* Called when fsm reaches OPENED state */
+ void (*down)(fsm *); /* Called when fsm leaves OPENED state */
+ void (*starting)(fsm *); /* Called when we want the lower layer */
+ void (*finished)(fsm *); /* Called when we don't want the lower layer */
+ void (*protreject)(int); /* Called when Protocol-Reject received */
+ void (*retransmit)(fsm *); /* Retransmission is necessary */
+ int (*extcode) /* Called when unknown code received */
+ (fsm *, int, int, u_char *, int);
+ char *proto_name; /* String name for protocol (for messages) */
+} fsm_callbacks;
+
+
/*
* Link states.
*/
/*
* Prototypes
*/
-void fsm_init __P((fsm *));
-void fsm_lowerup __P((fsm *));
-void fsm_lowerdown __P((fsm *));
-void fsm_open __P((fsm *));
-void fsm_close __P((fsm *));
-void fsm_input __P((fsm *, u_char *, int));
-void fsm_protreject __P((fsm *));
-void fsm_sdata __P((fsm *, int, int, u_char *, int));
+void fsm_init (fsm *);
+void fsm_lowerup (fsm *);
+void fsm_lowerdown (fsm *);
+void fsm_open (fsm *);
+void fsm_close (fsm *, char *);
+void fsm_input (fsm *, u_char *, int);
+void fsm_protreject (fsm *);
+void fsm_sdata (fsm *, int, int, u_char *, int);
/*
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