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EthernetNetIf/LPC2368/lwip/netif/ppp/fsm.h@0:39a067b5ae32, 2010-12-24 (annotated)

Committer:: brleme
Date:: Fri Dec 24 00:37:51 2010 +0000
Revision:: 0:39a067b5ae32

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User	Revision	Line number	New contents of line
brleme	0:39a067b5ae32	1	/*****************************************************************************
brleme	0:39a067b5ae32	2	* fsm.h - Network Control Protocol Finite State Machine header file.
brleme	0:39a067b5ae32	3	*
brleme	0:39a067b5ae32	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
brleme	0:39a067b5ae32	5	* Copyright (c) 1997 Global Election Systems Inc.
brleme	0:39a067b5ae32	6	*
brleme	0:39a067b5ae32	7	* The authors hereby grant permission to use, copy, modify, distribute,
brleme	0:39a067b5ae32	8	* and license this software and its documentation for any purpose, provided
brleme	0:39a067b5ae32	9	* that existing copyright notices are retained in all copies and that this
brleme	0:39a067b5ae32	10	* notice and the following disclaimer are included verbatim in any
brleme	0:39a067b5ae32	11	* distributions. No written agreement, license, or royalty fee is required
brleme	0:39a067b5ae32	12	* for any of the authorized uses.
brleme	0:39a067b5ae32	13	*
brleme	0:39a067b5ae32	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
brleme	0:39a067b5ae32	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
brleme	0:39a067b5ae32	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
brleme	0:39a067b5ae32	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
brleme	0:39a067b5ae32	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
brleme	0:39a067b5ae32	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
brleme	0:39a067b5ae32	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
brleme	0:39a067b5ae32	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
brleme	0:39a067b5ae32	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
brleme	0:39a067b5ae32	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
brleme	0:39a067b5ae32	24	*
brleme	0:39a067b5ae32	25	******************************************************************************
brleme	0:39a067b5ae32	26	* REVISION HISTORY
brleme	0:39a067b5ae32	27	*
brleme	0:39a067b5ae32	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
brleme	0:39a067b5ae32	29	* Ported to lwIP.
brleme	0:39a067b5ae32	30	* 97-11-05 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
brleme	0:39a067b5ae32	31	* Original based on BSD code.
brleme	0:39a067b5ae32	32	*****************************************************************************/
brleme	0:39a067b5ae32	33	/*
brleme	0:39a067b5ae32	34	* fsm.h - {Link, IP} Control Protocol Finite State Machine definitions.
brleme	0:39a067b5ae32	35	*
brleme	0:39a067b5ae32	36	* Copyright (c) 1989 Carnegie Mellon University.
brleme	0:39a067b5ae32	37	* All rights reserved.
brleme	0:39a067b5ae32	38	*
brleme	0:39a067b5ae32	39	* Redistribution and use in source and binary forms are permitted
brleme	0:39a067b5ae32	40	* provided that the above copyright notice and this paragraph are
brleme	0:39a067b5ae32	41	* duplicated in all such forms and that any documentation,
brleme	0:39a067b5ae32	42	* advertising materials, and other materials related to such
brleme	0:39a067b5ae32	43	* distribution and use acknowledge that the software was developed
brleme	0:39a067b5ae32	44	* by Carnegie Mellon University. The name of the
brleme	0:39a067b5ae32	45	* University may not be used to endorse or promote products derived
brleme	0:39a067b5ae32	46	* from this software without specific prior written permission.
brleme	0:39a067b5ae32	47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
brleme	0:39a067b5ae32	48	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
brleme	0:39a067b5ae32	49	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
brleme	0:39a067b5ae32	50	*
brleme	0:39a067b5ae32	51	* $Id: fsm.h,v 1.5 2009/12/31 17:08:08 goldsimon Exp $
brleme	0:39a067b5ae32	52	*/
brleme	0:39a067b5ae32	53
brleme	0:39a067b5ae32	54	#ifndef FSM_H
brleme	0:39a067b5ae32	55	#define FSM_H
brleme	0:39a067b5ae32	56
brleme	0:39a067b5ae32	57	/*
brleme	0:39a067b5ae32	58	* LCP Packet header = Code, id, length.
brleme	0:39a067b5ae32	59	*/
brleme	0:39a067b5ae32	60	#define HEADERLEN (sizeof (u_char) + sizeof (u_char) + sizeof (u_short))
brleme	0:39a067b5ae32	61
brleme	0:39a067b5ae32	62
brleme	0:39a067b5ae32	63	/*
brleme	0:39a067b5ae32	64	* CP (LCP, IPCP, etc.) codes.
brleme	0:39a067b5ae32	65	*/
brleme	0:39a067b5ae32	66	#define CONFREQ 1 /* Configuration Request */
brleme	0:39a067b5ae32	67	#define CONFACK 2 /* Configuration Ack */
brleme	0:39a067b5ae32	68	#define CONFNAK 3 /* Configuration Nak */
brleme	0:39a067b5ae32	69	#define CONFREJ 4 /* Configuration Reject */
brleme	0:39a067b5ae32	70	#define TERMREQ 5 /* Termination Request */
brleme	0:39a067b5ae32	71	#define TERMACK 6 /* Termination Ack */
brleme	0:39a067b5ae32	72	#define CODEREJ 7 /* Code Reject */
brleme	0:39a067b5ae32	73
brleme	0:39a067b5ae32	74
brleme	0:39a067b5ae32	75	/*
brleme	0:39a067b5ae32	76	* Each FSM is described by an fsm structure and fsm callbacks.
brleme	0:39a067b5ae32	77	*/
brleme	0:39a067b5ae32	78	typedef struct fsm {
brleme	0:39a067b5ae32	79	int unit; /* Interface unit number */
brleme	0:39a067b5ae32	80	u_short protocol; /* Data Link Layer Protocol field value */
brleme	0:39a067b5ae32	81	int state; /* State */
brleme	0:39a067b5ae32	82	int flags; /* Contains option bits */
brleme	0:39a067b5ae32	83	u_char id; /* Current id */
brleme	0:39a067b5ae32	84	u_char reqid; /* Current request id */
brleme	0:39a067b5ae32	85	u_char seen_ack; /* Have received valid Ack/Nak/Rej to Req */
brleme	0:39a067b5ae32	86	int timeouttime; /* Timeout time in milliseconds */
brleme	0:39a067b5ae32	87	int maxconfreqtransmits; /* Maximum Configure-Request transmissions */
brleme	0:39a067b5ae32	88	int retransmits; /* Number of retransmissions left */
brleme	0:39a067b5ae32	89	int maxtermtransmits; /* Maximum Terminate-Request transmissions */
brleme	0:39a067b5ae32	90	int nakloops; /* Number of nak loops since last ack */
brleme	0:39a067b5ae32	91	int maxnakloops; /* Maximum number of nak loops tolerated */
brleme	0:39a067b5ae32	92	struct fsm_callbacks* callbacks; /* Callback routines */
brleme	0:39a067b5ae32	93	char* term_reason; /* Reason for closing protocol */
brleme	0:39a067b5ae32	94	int term_reason_len; /* Length of term_reason */
brleme	0:39a067b5ae32	95	} fsm;
brleme	0:39a067b5ae32	96
brleme	0:39a067b5ae32	97
brleme	0:39a067b5ae32	98	typedef struct fsm_callbacks {
brleme	0:39a067b5ae32	99	void (resetci)(fsm); /* Reset our Configuration Information */
brleme	0:39a067b5ae32	100	int (cilen)(fsm); /* Length of our Configuration Information */
brleme	0:39a067b5ae32	101	void (addci)(fsm, u_char, int); /* Add our Configuration Information */
brleme	0:39a067b5ae32	102	int (ackci)(fsm, u_char, int); / ACK our Configuration Information */
brleme	0:39a067b5ae32	103	int (nakci)(fsm, u_char, int); / NAK our Configuration Information */
brleme	0:39a067b5ae32	104	int (rejci)(fsm, u_char, int); / Reject our Configuration Information */
brleme	0:39a067b5ae32	105	int (reqci)(fsm, u_char, int, int); /* Request peer's Configuration Information */
brleme	0:39a067b5ae32	106	void (up)(fsm); /* Called when fsm reaches LS_OPENED state */
brleme	0:39a067b5ae32	107	void (down)(fsm); /* Called when fsm leaves LS_OPENED state */
brleme	0:39a067b5ae32	108	void (starting)(fsm); /* Called when we want the lower layer */
brleme	0:39a067b5ae32	109	void (finished)(fsm); /* Called when we don't want the lower layer */
brleme	0:39a067b5ae32	110	void (protreject)(int); / Called when Protocol-Reject received */
brleme	0:39a067b5ae32	111	void (retransmit)(fsm); /* Retransmission is necessary */
brleme	0:39a067b5ae32	112	int (extcode)(fsm, int, u_char, u_char, int); / Called when unknown code received */
brleme	0:39a067b5ae32	113	char proto_name; / String name for protocol (for messages) */
brleme	0:39a067b5ae32	114	} fsm_callbacks;
brleme	0:39a067b5ae32	115
brleme	0:39a067b5ae32	116
brleme	0:39a067b5ae32	117	/*
brleme	0:39a067b5ae32	118	* Link states.
brleme	0:39a067b5ae32	119	*/
brleme	0:39a067b5ae32	120	#define LS_INITIAL 0 /* Down, hasn't been opened */
brleme	0:39a067b5ae32	121	#define LS_STARTING 1 /* Down, been opened */
brleme	0:39a067b5ae32	122	#define LS_CLOSED 2 /* Up, hasn't been opened */
brleme	0:39a067b5ae32	123	#define LS_STOPPED 3 /* Open, waiting for down event */
brleme	0:39a067b5ae32	124	#define LS_CLOSING 4 /* Terminating the connection, not open */
brleme	0:39a067b5ae32	125	#define LS_STOPPING 5 /* Terminating, but open */
brleme	0:39a067b5ae32	126	#define LS_REQSENT 6 /* We've sent a Config Request */
brleme	0:39a067b5ae32	127	#define LS_ACKRCVD 7 /* We've received a Config Ack */
brleme	0:39a067b5ae32	128	#define LS_ACKSENT 8 /* We've sent a Config Ack */
brleme	0:39a067b5ae32	129	#define LS_OPENED 9 /* Connection available */
brleme	0:39a067b5ae32	130
brleme	0:39a067b5ae32	131	/*
brleme	0:39a067b5ae32	132	* Flags - indicate options controlling FSM operation
brleme	0:39a067b5ae32	133	*/
brleme	0:39a067b5ae32	134	#define OPT_PASSIVE 1 /* Don't die if we don't get a response */
brleme	0:39a067b5ae32	135	#define OPT_RESTART 2 /* Treat 2nd OPEN as DOWN, UP */
brleme	0:39a067b5ae32	136	#define OPT_SILENT 4 /* Wait for peer to speak first */
brleme	0:39a067b5ae32	137
brleme	0:39a067b5ae32	138
brleme	0:39a067b5ae32	139	/*
brleme	0:39a067b5ae32	140	* Prototypes
brleme	0:39a067b5ae32	141	*/
brleme	0:39a067b5ae32	142	void fsm_init (fsm*);
brleme	0:39a067b5ae32	143	void fsm_lowerup (fsm*);
brleme	0:39a067b5ae32	144	void fsm_lowerdown (fsm*);
brleme	0:39a067b5ae32	145	void fsm_open (fsm*);
brleme	0:39a067b5ae32	146	void fsm_close (fsm, char);
brleme	0:39a067b5ae32	147	void fsm_input (fsm, u_char, int);
brleme	0:39a067b5ae32	148	void fsm_protreject (fsm*);
brleme	0:39a067b5ae32	149	void fsm_sdata (fsm, u_char, u_char, u_char, int);
brleme	0:39a067b5ae32	150
brleme	0:39a067b5ae32	151
brleme	0:39a067b5ae32	152	/*
brleme	0:39a067b5ae32	153	* Variables
brleme	0:39a067b5ae32	154	*/
brleme	0:39a067b5ae32	155	extern int peer_mru[]; /* currently negotiated peer MRU (per unit) */
brleme	0:39a067b5ae32	156
brleme	0:39a067b5ae32	157	#endif /* FSM_H */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	24 Dec 2010
Imports:	13
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

EthernetNetIf/LPC2368/lwip/netif/ppp/fsm.h@0:39a067b5ae32, 2010-12-24 (annotated)

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