EthernetNetIf - This library is deprecated.

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This library is deprecated.

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LPC2368/lwip/netif/ppp/fsm.h@5:bc7df6da7589, 2010-08-05 (annotated)

Committer:: donatien
Date:: Thu Aug 05 15:09:22 2010 +0000
Revision:: 5:bc7df6da7589
Parent:: 0:422060928e37

Who changed what in which revision?

User	Revision	Line number	New contents of line
donatien	0:422060928e37	1	/*****************************************************************************
donatien	0:422060928e37	2	* fsm.h - Network Control Protocol Finite State Machine header file.
donatien	0:422060928e37	3	*
donatien	0:422060928e37	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
donatien	0:422060928e37	5	* Copyright (c) 1997 Global Election Systems Inc.
donatien	0:422060928e37	6	*
donatien	0:422060928e37	7	* The authors hereby grant permission to use, copy, modify, distribute,
donatien	0:422060928e37	8	* and license this software and its documentation for any purpose, provided
donatien	0:422060928e37	9	* that existing copyright notices are retained in all copies and that this
donatien	0:422060928e37	10	* notice and the following disclaimer are included verbatim in any
donatien	0:422060928e37	11	* distributions. No written agreement, license, or royalty fee is required
donatien	0:422060928e37	12	* for any of the authorized uses.
donatien	0:422060928e37	13	*
donatien	0:422060928e37	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
donatien	0:422060928e37	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
donatien	0:422060928e37	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
donatien	0:422060928e37	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
donatien	0:422060928e37	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
donatien	0:422060928e37	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
donatien	0:422060928e37	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
donatien	0:422060928e37	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
donatien	0:422060928e37	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
donatien	0:422060928e37	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
donatien	0:422060928e37	24	*
donatien	0:422060928e37	25	******************************************************************************
donatien	0:422060928e37	26	* REVISION HISTORY
donatien	0:422060928e37	27	*
donatien	0:422060928e37	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
donatien	0:422060928e37	29	* Ported to lwIP.
donatien	0:422060928e37	30	* 97-11-05 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
donatien	0:422060928e37	31	* Original based on BSD code.
donatien	0:422060928e37	32	*****************************************************************************/
donatien	0:422060928e37	33	/*
donatien	0:422060928e37	34	* fsm.h - {Link, IP} Control Protocol Finite State Machine definitions.
donatien	0:422060928e37	35	*
donatien	0:422060928e37	36	* Copyright (c) 1989 Carnegie Mellon University.
donatien	0:422060928e37	37	* All rights reserved.
donatien	0:422060928e37	38	*
donatien	0:422060928e37	39	* Redistribution and use in source and binary forms are permitted
donatien	0:422060928e37	40	* provided that the above copyright notice and this paragraph are
donatien	0:422060928e37	41	* duplicated in all such forms and that any documentation,
donatien	0:422060928e37	42	* advertising materials, and other materials related to such
donatien	0:422060928e37	43	* distribution and use acknowledge that the software was developed
donatien	0:422060928e37	44	* by Carnegie Mellon University. The name of the
donatien	0:422060928e37	45	* University may not be used to endorse or promote products derived
donatien	0:422060928e37	46	* from this software without specific prior written permission.
donatien	0:422060928e37	47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
donatien	0:422060928e37	48	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
donatien	0:422060928e37	49	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
donatien	0:422060928e37	50	*
donatien	0:422060928e37	51	* $Id: fsm.h,v 1.5 2009/12/31 17:08:08 goldsimon Exp $
donatien	0:422060928e37	52	*/
donatien	0:422060928e37	53
donatien	0:422060928e37	54	#ifndef FSM_H
donatien	0:422060928e37	55	#define FSM_H
donatien	0:422060928e37	56
donatien	0:422060928e37	57	/*
donatien	0:422060928e37	58	* LCP Packet header = Code, id, length.
donatien	0:422060928e37	59	*/
donatien	0:422060928e37	60	#define HEADERLEN (sizeof (u_char) + sizeof (u_char) + sizeof (u_short))
donatien	0:422060928e37	61
donatien	0:422060928e37	62
donatien	0:422060928e37	63	/*
donatien	0:422060928e37	64	* CP (LCP, IPCP, etc.) codes.
donatien	0:422060928e37	65	*/
donatien	0:422060928e37	66	#define CONFREQ 1 /* Configuration Request */
donatien	0:422060928e37	67	#define CONFACK 2 /* Configuration Ack */
donatien	0:422060928e37	68	#define CONFNAK 3 /* Configuration Nak */
donatien	0:422060928e37	69	#define CONFREJ 4 /* Configuration Reject */
donatien	0:422060928e37	70	#define TERMREQ 5 /* Termination Request */
donatien	0:422060928e37	71	#define TERMACK 6 /* Termination Ack */
donatien	0:422060928e37	72	#define CODEREJ 7 /* Code Reject */
donatien	0:422060928e37	73
donatien	0:422060928e37	74
donatien	0:422060928e37	75	/*
donatien	0:422060928e37	76	* Each FSM is described by an fsm structure and fsm callbacks.
donatien	0:422060928e37	77	*/
donatien	0:422060928e37	78	typedef struct fsm {
donatien	0:422060928e37	79	int unit; /* Interface unit number */
donatien	0:422060928e37	80	u_short protocol; /* Data Link Layer Protocol field value */
donatien	0:422060928e37	81	int state; /* State */
donatien	0:422060928e37	82	int flags; /* Contains option bits */
donatien	0:422060928e37	83	u_char id; /* Current id */
donatien	0:422060928e37	84	u_char reqid; /* Current request id */
donatien	0:422060928e37	85	u_char seen_ack; /* Have received valid Ack/Nak/Rej to Req */
donatien	0:422060928e37	86	int timeouttime; /* Timeout time in milliseconds */
donatien	0:422060928e37	87	int maxconfreqtransmits; /* Maximum Configure-Request transmissions */
donatien	0:422060928e37	88	int retransmits; /* Number of retransmissions left */
donatien	0:422060928e37	89	int maxtermtransmits; /* Maximum Terminate-Request transmissions */
donatien	0:422060928e37	90	int nakloops; /* Number of nak loops since last ack */
donatien	0:422060928e37	91	int maxnakloops; /* Maximum number of nak loops tolerated */
donatien	0:422060928e37	92	struct fsm_callbacks* callbacks; /* Callback routines */
donatien	0:422060928e37	93	char* term_reason; /* Reason for closing protocol */
donatien	0:422060928e37	94	int term_reason_len; /* Length of term_reason */
donatien	0:422060928e37	95	} fsm;
donatien	0:422060928e37	96
donatien	0:422060928e37	97
donatien	0:422060928e37	98	typedef struct fsm_callbacks {
donatien	0:422060928e37	99	void (resetci)(fsm); /* Reset our Configuration Information */
donatien	0:422060928e37	100	int (cilen)(fsm); /* Length of our Configuration Information */
donatien	0:422060928e37	101	void (addci)(fsm, u_char, int); /* Add our Configuration Information */
donatien	0:422060928e37	102	int (ackci)(fsm, u_char, int); / ACK our Configuration Information */
donatien	0:422060928e37	103	int (nakci)(fsm, u_char, int); / NAK our Configuration Information */
donatien	0:422060928e37	104	int (rejci)(fsm, u_char, int); / Reject our Configuration Information */
donatien	0:422060928e37	105	int (reqci)(fsm, u_char, int, int); /* Request peer's Configuration Information */
donatien	0:422060928e37	106	void (up)(fsm); /* Called when fsm reaches LS_OPENED state */
donatien	0:422060928e37	107	void (down)(fsm); /* Called when fsm leaves LS_OPENED state */
donatien	0:422060928e37	108	void (starting)(fsm); /* Called when we want the lower layer */
donatien	0:422060928e37	109	void (finished)(fsm); /* Called when we don't want the lower layer */
donatien	0:422060928e37	110	void (protreject)(int); / Called when Protocol-Reject received */
donatien	0:422060928e37	111	void (retransmit)(fsm); /* Retransmission is necessary */
donatien	0:422060928e37	112	int (extcode)(fsm, int, u_char, u_char, int); / Called when unknown code received */
donatien	0:422060928e37	113	char proto_name; / String name for protocol (for messages) */
donatien	0:422060928e37	114	} fsm_callbacks;
donatien	0:422060928e37	115
donatien	0:422060928e37	116
donatien	0:422060928e37	117	/*
donatien	0:422060928e37	118	* Link states.
donatien	0:422060928e37	119	*/
donatien	0:422060928e37	120	#define LS_INITIAL 0 /* Down, hasn't been opened */
donatien	0:422060928e37	121	#define LS_STARTING 1 /* Down, been opened */
donatien	0:422060928e37	122	#define LS_CLOSED 2 /* Up, hasn't been opened */
donatien	0:422060928e37	123	#define LS_STOPPED 3 /* Open, waiting for down event */
donatien	0:422060928e37	124	#define LS_CLOSING 4 /* Terminating the connection, not open */
donatien	0:422060928e37	125	#define LS_STOPPING 5 /* Terminating, but open */
donatien	0:422060928e37	126	#define LS_REQSENT 6 /* We've sent a Config Request */
donatien	0:422060928e37	127	#define LS_ACKRCVD 7 /* We've received a Config Ack */
donatien	0:422060928e37	128	#define LS_ACKSENT 8 /* We've sent a Config Ack */
donatien	0:422060928e37	129	#define LS_OPENED 9 /* Connection available */
donatien	0:422060928e37	130
donatien	0:422060928e37	131	/*
donatien	0:422060928e37	132	* Flags - indicate options controlling FSM operation
donatien	0:422060928e37	133	*/
donatien	0:422060928e37	134	#define OPT_PASSIVE 1 /* Don't die if we don't get a response */
donatien	0:422060928e37	135	#define OPT_RESTART 2 /* Treat 2nd OPEN as DOWN, UP */
donatien	0:422060928e37	136	#define OPT_SILENT 4 /* Wait for peer to speak first */
donatien	0:422060928e37	137
donatien	0:422060928e37	138
donatien	0:422060928e37	139	/*
donatien	0:422060928e37	140	* Prototypes
donatien	0:422060928e37	141	*/
donatien	0:422060928e37	142	void fsm_init (fsm*);
donatien	0:422060928e37	143	void fsm_lowerup (fsm*);
donatien	0:422060928e37	144	void fsm_lowerdown (fsm*);
donatien	0:422060928e37	145	void fsm_open (fsm*);
donatien	0:422060928e37	146	void fsm_close (fsm, char);
donatien	0:422060928e37	147	void fsm_input (fsm, u_char, int);
donatien	0:422060928e37	148	void fsm_protreject (fsm*);
donatien	0:422060928e37	149	void fsm_sdata (fsm, u_char, u_char, u_char, int);
donatien	0:422060928e37	150
donatien	0:422060928e37	151
donatien	0:422060928e37	152	/*
donatien	0:422060928e37	153	* Variables
donatien	0:422060928e37	154	*/
donatien	0:422060928e37	155	extern int peer_mru[]; /* currently negotiated peer MRU (per unit) */
donatien	0:422060928e37	156
donatien	0:422060928e37	157	#endif /* FSM_H */

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Type:	Library
Created:	11 Jun 2010
Imports:	12689
Forks:	7
Commits:	6
Dependents:	238
Dependencies:	0
Followers:	20

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LPC2368/lwip/netif/ppp/fsm.h@5:bc7df6da7589, 2010-08-05 (annotated)

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