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NetStack/lwip/netif/ppp/fsm.h@0:1a61c61d0845, 2012-04-03 (annotated)

Committer:: dcoban
Date:: Tue Apr 03 18:43:13 2012 +0000
Revision:: 0:1a61c61d0845

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User	Revision	Line number	New contents of line
dcoban	0:1a61c61d0845	1	/*****************************************************************************
dcoban	0:1a61c61d0845	2	* fsm.h - Network Control Protocol Finite State Machine header file.
dcoban	0:1a61c61d0845	3	*
dcoban	0:1a61c61d0845	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
dcoban	0:1a61c61d0845	5	* Copyright (c) 1997 Global Election Systems Inc.
dcoban	0:1a61c61d0845	6	*
dcoban	0:1a61c61d0845	7	* The authors hereby grant permission to use, copy, modify, distribute,
dcoban	0:1a61c61d0845	8	* and license this software and its documentation for any purpose, provided
dcoban	0:1a61c61d0845	9	* that existing copyright notices are retained in all copies and that this
dcoban	0:1a61c61d0845	10	* notice and the following disclaimer are included verbatim in any
dcoban	0:1a61c61d0845	11	* distributions. No written agreement, license, or royalty fee is required
dcoban	0:1a61c61d0845	12	* for any of the authorized uses.
dcoban	0:1a61c61d0845	13	*
dcoban	0:1a61c61d0845	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
dcoban	0:1a61c61d0845	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
dcoban	0:1a61c61d0845	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
dcoban	0:1a61c61d0845	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
dcoban	0:1a61c61d0845	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
dcoban	0:1a61c61d0845	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
dcoban	0:1a61c61d0845	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
dcoban	0:1a61c61d0845	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
dcoban	0:1a61c61d0845	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
dcoban	0:1a61c61d0845	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
dcoban	0:1a61c61d0845	24	*
dcoban	0:1a61c61d0845	25	******************************************************************************
dcoban	0:1a61c61d0845	26	* REVISION HISTORY
dcoban	0:1a61c61d0845	27	*
dcoban	0:1a61c61d0845	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
dcoban	0:1a61c61d0845	29	* Ported to lwIP.
dcoban	0:1a61c61d0845	30	* 97-11-05 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
dcoban	0:1a61c61d0845	31	* Original based on BSD code.
dcoban	0:1a61c61d0845	32	*****************************************************************************/
dcoban	0:1a61c61d0845	33	/*
dcoban	0:1a61c61d0845	34	* fsm.h - {Link, IP} Control Protocol Finite State Machine definitions.
dcoban	0:1a61c61d0845	35	*
dcoban	0:1a61c61d0845	36	* Copyright (c) 1989 Carnegie Mellon University.
dcoban	0:1a61c61d0845	37	* All rights reserved.
dcoban	0:1a61c61d0845	38	*
dcoban	0:1a61c61d0845	39	* Redistribution and use in source and binary forms are permitted
dcoban	0:1a61c61d0845	40	* provided that the above copyright notice and this paragraph are
dcoban	0:1a61c61d0845	41	* duplicated in all such forms and that any documentation,
dcoban	0:1a61c61d0845	42	* advertising materials, and other materials related to such
dcoban	0:1a61c61d0845	43	* distribution and use acknowledge that the software was developed
dcoban	0:1a61c61d0845	44	* by Carnegie Mellon University. The name of the
dcoban	0:1a61c61d0845	45	* University may not be used to endorse or promote products derived
dcoban	0:1a61c61d0845	46	* from this software without specific prior written permission.
dcoban	0:1a61c61d0845	47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
dcoban	0:1a61c61d0845	48	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
dcoban	0:1a61c61d0845	49	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
dcoban	0:1a61c61d0845	50	*
dcoban	0:1a61c61d0845	51	* $Id: fsm.h,v 1.5 2009/12/31 17:08:08 goldsimon Exp $
dcoban	0:1a61c61d0845	52	*/
dcoban	0:1a61c61d0845	53
dcoban	0:1a61c61d0845	54	#ifndef FSM_H
dcoban	0:1a61c61d0845	55	#define FSM_H
dcoban	0:1a61c61d0845	56
dcoban	0:1a61c61d0845	57	/*
dcoban	0:1a61c61d0845	58	* LCP Packet header = Code, id, length.
dcoban	0:1a61c61d0845	59	*/
dcoban	0:1a61c61d0845	60	#define HEADERLEN (sizeof (u_char) + sizeof (u_char) + sizeof (u_short))
dcoban	0:1a61c61d0845	61
dcoban	0:1a61c61d0845	62
dcoban	0:1a61c61d0845	63	/*
dcoban	0:1a61c61d0845	64	* CP (LCP, IPCP, etc.) codes.
dcoban	0:1a61c61d0845	65	*/
dcoban	0:1a61c61d0845	66	#define CONFREQ 1 /* Configuration Request */
dcoban	0:1a61c61d0845	67	#define CONFACK 2 /* Configuration Ack */
dcoban	0:1a61c61d0845	68	#define CONFNAK 3 /* Configuration Nak */
dcoban	0:1a61c61d0845	69	#define CONFREJ 4 /* Configuration Reject */
dcoban	0:1a61c61d0845	70	#define TERMREQ 5 /* Termination Request */
dcoban	0:1a61c61d0845	71	#define TERMACK 6 /* Termination Ack */
dcoban	0:1a61c61d0845	72	#define CODEREJ 7 /* Code Reject */
dcoban	0:1a61c61d0845	73
dcoban	0:1a61c61d0845	74
dcoban	0:1a61c61d0845	75	/*
dcoban	0:1a61c61d0845	76	* Each FSM is described by an fsm structure and fsm callbacks.
dcoban	0:1a61c61d0845	77	*/
dcoban	0:1a61c61d0845	78	typedef struct fsm {
dcoban	0:1a61c61d0845	79	int unit; /* Interface unit number */
dcoban	0:1a61c61d0845	80	u_short protocol; /* Data Link Layer Protocol field value */
dcoban	0:1a61c61d0845	81	int state; /* State */
dcoban	0:1a61c61d0845	82	int flags; /* Contains option bits */
dcoban	0:1a61c61d0845	83	u_char id; /* Current id */
dcoban	0:1a61c61d0845	84	u_char reqid; /* Current request id */
dcoban	0:1a61c61d0845	85	u_char seen_ack; /* Have received valid Ack/Nak/Rej to Req */
dcoban	0:1a61c61d0845	86	int timeouttime; /* Timeout time in milliseconds */
dcoban	0:1a61c61d0845	87	int maxconfreqtransmits; /* Maximum Configure-Request transmissions */
dcoban	0:1a61c61d0845	88	int retransmits; /* Number of retransmissions left */
dcoban	0:1a61c61d0845	89	int maxtermtransmits; /* Maximum Terminate-Request transmissions */
dcoban	0:1a61c61d0845	90	int nakloops; /* Number of nak loops since last ack */
dcoban	0:1a61c61d0845	91	int maxnakloops; /* Maximum number of nak loops tolerated */
dcoban	0:1a61c61d0845	92	struct fsm_callbacks* callbacks; /* Callback routines */
dcoban	0:1a61c61d0845	93	char* term_reason; /* Reason for closing protocol */
dcoban	0:1a61c61d0845	94	int term_reason_len; /* Length of term_reason */
dcoban	0:1a61c61d0845	95	} fsm;
dcoban	0:1a61c61d0845	96
dcoban	0:1a61c61d0845	97
dcoban	0:1a61c61d0845	98	typedef struct fsm_callbacks {
dcoban	0:1a61c61d0845	99	void (resetci)(fsm); /* Reset our Configuration Information */
dcoban	0:1a61c61d0845	100	int (cilen)(fsm); /* Length of our Configuration Information */
dcoban	0:1a61c61d0845	101	void (addci)(fsm, u_char, int); /* Add our Configuration Information */
dcoban	0:1a61c61d0845	102	int (ackci)(fsm, u_char, int); / ACK our Configuration Information */
dcoban	0:1a61c61d0845	103	int (nakci)(fsm, u_char, int); / NAK our Configuration Information */
dcoban	0:1a61c61d0845	104	int (rejci)(fsm, u_char, int); / Reject our Configuration Information */
dcoban	0:1a61c61d0845	105	int (reqci)(fsm, u_char, int, int); /* Request peer's Configuration Information */
dcoban	0:1a61c61d0845	106	void (up)(fsm); /* Called when fsm reaches LS_OPENED state */
dcoban	0:1a61c61d0845	107	void (down)(fsm); /* Called when fsm leaves LS_OPENED state */
dcoban	0:1a61c61d0845	108	void (starting)(fsm); /* Called when we want the lower layer */
dcoban	0:1a61c61d0845	109	void (finished)(fsm); /* Called when we don't want the lower layer */
dcoban	0:1a61c61d0845	110	void (protreject)(int); / Called when Protocol-Reject received */
dcoban	0:1a61c61d0845	111	void (retransmit)(fsm); /* Retransmission is necessary */
dcoban	0:1a61c61d0845	112	int (extcode)(fsm, int, u_char, u_char, int); / Called when unknown code received */
dcoban	0:1a61c61d0845	113	char proto_name; / String name for protocol (for messages) */
dcoban	0:1a61c61d0845	114	} fsm_callbacks;
dcoban	0:1a61c61d0845	115
dcoban	0:1a61c61d0845	116
dcoban	0:1a61c61d0845	117	/*
dcoban	0:1a61c61d0845	118	* Link states.
dcoban	0:1a61c61d0845	119	*/
dcoban	0:1a61c61d0845	120	#define LS_INITIAL 0 /* Down, hasn't been opened */
dcoban	0:1a61c61d0845	121	#define LS_STARTING 1 /* Down, been opened */
dcoban	0:1a61c61d0845	122	#define LS_CLOSED 2 /* Up, hasn't been opened */
dcoban	0:1a61c61d0845	123	#define LS_STOPPED 3 /* Open, waiting for down event */
dcoban	0:1a61c61d0845	124	#define LS_CLOSING 4 /* Terminating the connection, not open */
dcoban	0:1a61c61d0845	125	#define LS_STOPPING 5 /* Terminating, but open */
dcoban	0:1a61c61d0845	126	#define LS_REQSENT 6 /* We've sent a Config Request */
dcoban	0:1a61c61d0845	127	#define LS_ACKRCVD 7 /* We've received a Config Ack */
dcoban	0:1a61c61d0845	128	#define LS_ACKSENT 8 /* We've sent a Config Ack */
dcoban	0:1a61c61d0845	129	#define LS_OPENED 9 /* Connection available */
dcoban	0:1a61c61d0845	130
dcoban	0:1a61c61d0845	131	/*
dcoban	0:1a61c61d0845	132	* Flags - indicate options controlling FSM operation
dcoban	0:1a61c61d0845	133	*/
dcoban	0:1a61c61d0845	134	#define OPT_PASSIVE 1 /* Don't die if we don't get a response */
dcoban	0:1a61c61d0845	135	#define OPT_RESTART 2 /* Treat 2nd OPEN as DOWN, UP */
dcoban	0:1a61c61d0845	136	#define OPT_SILENT 4 /* Wait for peer to speak first */
dcoban	0:1a61c61d0845	137
dcoban	0:1a61c61d0845	138
dcoban	0:1a61c61d0845	139	/*
dcoban	0:1a61c61d0845	140	* Prototypes
dcoban	0:1a61c61d0845	141	*/
dcoban	0:1a61c61d0845	142	void fsm_init (fsm*);
dcoban	0:1a61c61d0845	143	void fsm_lowerup (fsm*);
dcoban	0:1a61c61d0845	144	void fsm_lowerdown (fsm*);
dcoban	0:1a61c61d0845	145	void fsm_open (fsm*);
dcoban	0:1a61c61d0845	146	void fsm_close (fsm, char);
dcoban	0:1a61c61d0845	147	void fsm_input (fsm, u_char, int);
dcoban	0:1a61c61d0845	148	void fsm_protreject (fsm*);
dcoban	0:1a61c61d0845	149	void fsm_sdata (fsm, u_char, u_char, u_char, int);
dcoban	0:1a61c61d0845	150
dcoban	0:1a61c61d0845	151
dcoban	0:1a61c61d0845	152	/*
dcoban	0:1a61c61d0845	153	* Variables
dcoban	0:1a61c61d0845	154	*/
dcoban	0:1a61c61d0845	155	extern int peer_mru[]; /* currently negotiated peer MRU (per unit) */
dcoban	0:1a61c61d0845	156
dcoban	0:1a61c61d0845	157	#endif /* FSM_H */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	03 Apr 2012
Imports:	2
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	4
Followers:	1

NetStack/lwip/netif/ppp/fsm.h@0:1a61c61d0845, 2012-04-03 (annotated)

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