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EthernetNetIf/LPC1768/lwip/netif/ppp/fsm.h@0:a3c892f39cc1, 2011-04-16 (annotated)

Committer:: okini3939
Date:: Sat Apr 16 15:15:48 2011 +0000
Revision:: 0:a3c892f39cc1

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User	Revision	Line number	New contents of line
okini3939	0:a3c892f39cc1	1	/*****************************************************************************
okini3939	0:a3c892f39cc1	2	* fsm.h - Network Control Protocol Finite State Machine header file.
okini3939	0:a3c892f39cc1	3	*
okini3939	0:a3c892f39cc1	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
okini3939	0:a3c892f39cc1	5	* Copyright (c) 1997 Global Election Systems Inc.
okini3939	0:a3c892f39cc1	6	*
okini3939	0:a3c892f39cc1	7	* The authors hereby grant permission to use, copy, modify, distribute,
okini3939	0:a3c892f39cc1	8	* and license this software and its documentation for any purpose, provided
okini3939	0:a3c892f39cc1	9	* that existing copyright notices are retained in all copies and that this
okini3939	0:a3c892f39cc1	10	* notice and the following disclaimer are included verbatim in any
okini3939	0:a3c892f39cc1	11	* distributions. No written agreement, license, or royalty fee is required
okini3939	0:a3c892f39cc1	12	* for any of the authorized uses.
okini3939	0:a3c892f39cc1	13	*
okini3939	0:a3c892f39cc1	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
okini3939	0:a3c892f39cc1	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
okini3939	0:a3c892f39cc1	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
okini3939	0:a3c892f39cc1	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
okini3939	0:a3c892f39cc1	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
okini3939	0:a3c892f39cc1	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
okini3939	0:a3c892f39cc1	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
okini3939	0:a3c892f39cc1	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
okini3939	0:a3c892f39cc1	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
okini3939	0:a3c892f39cc1	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
okini3939	0:a3c892f39cc1	24	*
okini3939	0:a3c892f39cc1	25	******************************************************************************
okini3939	0:a3c892f39cc1	26	* REVISION HISTORY
okini3939	0:a3c892f39cc1	27	*
okini3939	0:a3c892f39cc1	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
okini3939	0:a3c892f39cc1	29	* Ported to lwIP.
okini3939	0:a3c892f39cc1	30	* 97-11-05 Guy Lancaster <glanca@gesn.com>, Global Election Systems Inc.
okini3939	0:a3c892f39cc1	31	* Original based on BSD code.
okini3939	0:a3c892f39cc1	32	*****************************************************************************/
okini3939	0:a3c892f39cc1	33	/*
okini3939	0:a3c892f39cc1	34	* fsm.h - {Link, IP} Control Protocol Finite State Machine definitions.
okini3939	0:a3c892f39cc1	35	*
okini3939	0:a3c892f39cc1	36	* Copyright (c) 1989 Carnegie Mellon University.
okini3939	0:a3c892f39cc1	37	* All rights reserved.
okini3939	0:a3c892f39cc1	38	*
okini3939	0:a3c892f39cc1	39	* Redistribution and use in source and binary forms are permitted
okini3939	0:a3c892f39cc1	40	* provided that the above copyright notice and this paragraph are
okini3939	0:a3c892f39cc1	41	* duplicated in all such forms and that any documentation,
okini3939	0:a3c892f39cc1	42	* advertising materials, and other materials related to such
okini3939	0:a3c892f39cc1	43	* distribution and use acknowledge that the software was developed
okini3939	0:a3c892f39cc1	44	* by Carnegie Mellon University. The name of the
okini3939	0:a3c892f39cc1	45	* University may not be used to endorse or promote products derived
okini3939	0:a3c892f39cc1	46	* from this software without specific prior written permission.
okini3939	0:a3c892f39cc1	47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
okini3939	0:a3c892f39cc1	48	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
okini3939	0:a3c892f39cc1	49	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
okini3939	0:a3c892f39cc1	50	*
okini3939	0:a3c892f39cc1	51	* $Id: fsm.h,v 1.5 2009/12/31 17:08:08 goldsimon Exp $
okini3939	0:a3c892f39cc1	52	*/
okini3939	0:a3c892f39cc1	53
okini3939	0:a3c892f39cc1	54	#ifndef FSM_H
okini3939	0:a3c892f39cc1	55	#define FSM_H
okini3939	0:a3c892f39cc1	56
okini3939	0:a3c892f39cc1	57	/*
okini3939	0:a3c892f39cc1	58	* LCP Packet header = Code, id, length.
okini3939	0:a3c892f39cc1	59	*/
okini3939	0:a3c892f39cc1	60	#define HEADERLEN (sizeof (u_char) + sizeof (u_char) + sizeof (u_short))
okini3939	0:a3c892f39cc1	61
okini3939	0:a3c892f39cc1	62
okini3939	0:a3c892f39cc1	63	/*
okini3939	0:a3c892f39cc1	64	* CP (LCP, IPCP, etc.) codes.
okini3939	0:a3c892f39cc1	65	*/
okini3939	0:a3c892f39cc1	66	#define CONFREQ 1 /* Configuration Request */
okini3939	0:a3c892f39cc1	67	#define CONFACK 2 /* Configuration Ack */
okini3939	0:a3c892f39cc1	68	#define CONFNAK 3 /* Configuration Nak */
okini3939	0:a3c892f39cc1	69	#define CONFREJ 4 /* Configuration Reject */
okini3939	0:a3c892f39cc1	70	#define TERMREQ 5 /* Termination Request */
okini3939	0:a3c892f39cc1	71	#define TERMACK 6 /* Termination Ack */
okini3939	0:a3c892f39cc1	72	#define CODEREJ 7 /* Code Reject */
okini3939	0:a3c892f39cc1	73
okini3939	0:a3c892f39cc1	74
okini3939	0:a3c892f39cc1	75	/*
okini3939	0:a3c892f39cc1	76	* Each FSM is described by an fsm structure and fsm callbacks.
okini3939	0:a3c892f39cc1	77	*/
okini3939	0:a3c892f39cc1	78	typedef struct fsm {
okini3939	0:a3c892f39cc1	79	int unit; /* Interface unit number */
okini3939	0:a3c892f39cc1	80	u_short protocol; /* Data Link Layer Protocol field value */
okini3939	0:a3c892f39cc1	81	int state; /* State */
okini3939	0:a3c892f39cc1	82	int flags; /* Contains option bits */
okini3939	0:a3c892f39cc1	83	u_char id; /* Current id */
okini3939	0:a3c892f39cc1	84	u_char reqid; /* Current request id */
okini3939	0:a3c892f39cc1	85	u_char seen_ack; /* Have received valid Ack/Nak/Rej to Req */
okini3939	0:a3c892f39cc1	86	int timeouttime; /* Timeout time in milliseconds */
okini3939	0:a3c892f39cc1	87	int maxconfreqtransmits; /* Maximum Configure-Request transmissions */
okini3939	0:a3c892f39cc1	88	int retransmits; /* Number of retransmissions left */
okini3939	0:a3c892f39cc1	89	int maxtermtransmits; /* Maximum Terminate-Request transmissions */
okini3939	0:a3c892f39cc1	90	int nakloops; /* Number of nak loops since last ack */
okini3939	0:a3c892f39cc1	91	int maxnakloops; /* Maximum number of nak loops tolerated */
okini3939	0:a3c892f39cc1	92	struct fsm_callbacks* callbacks; /* Callback routines */
okini3939	0:a3c892f39cc1	93	char* term_reason; /* Reason for closing protocol */
okini3939	0:a3c892f39cc1	94	int term_reason_len; /* Length of term_reason */
okini3939	0:a3c892f39cc1	95	} fsm;
okini3939	0:a3c892f39cc1	96
okini3939	0:a3c892f39cc1	97
okini3939	0:a3c892f39cc1	98	typedef struct fsm_callbacks {
okini3939	0:a3c892f39cc1	99	void (resetci)(fsm); /* Reset our Configuration Information */
okini3939	0:a3c892f39cc1	100	int (cilen)(fsm); /* Length of our Configuration Information */
okini3939	0:a3c892f39cc1	101	void (addci)(fsm, u_char, int); /* Add our Configuration Information */
okini3939	0:a3c892f39cc1	102	int (ackci)(fsm, u_char, int); / ACK our Configuration Information */
okini3939	0:a3c892f39cc1	103	int (nakci)(fsm, u_char, int); / NAK our Configuration Information */
okini3939	0:a3c892f39cc1	104	int (rejci)(fsm, u_char, int); / Reject our Configuration Information */
okini3939	0:a3c892f39cc1	105	int (reqci)(fsm, u_char, int, int); /* Request peer's Configuration Information */
okini3939	0:a3c892f39cc1	106	void (up)(fsm); /* Called when fsm reaches LS_OPENED state */
okini3939	0:a3c892f39cc1	107	void (down)(fsm); /* Called when fsm leaves LS_OPENED state */
okini3939	0:a3c892f39cc1	108	void (starting)(fsm); /* Called when we want the lower layer */
okini3939	0:a3c892f39cc1	109	void (finished)(fsm); /* Called when we don't want the lower layer */
okini3939	0:a3c892f39cc1	110	void (protreject)(int); / Called when Protocol-Reject received */
okini3939	0:a3c892f39cc1	111	void (retransmit)(fsm); /* Retransmission is necessary */
okini3939	0:a3c892f39cc1	112	int (extcode)(fsm, int, u_char, u_char, int); / Called when unknown code received */
okini3939	0:a3c892f39cc1	113	char proto_name; / String name for protocol (for messages) */
okini3939	0:a3c892f39cc1	114	} fsm_callbacks;
okini3939	0:a3c892f39cc1	115
okini3939	0:a3c892f39cc1	116
okini3939	0:a3c892f39cc1	117	/*
okini3939	0:a3c892f39cc1	118	* Link states.
okini3939	0:a3c892f39cc1	119	*/
okini3939	0:a3c892f39cc1	120	#define LS_INITIAL 0 /* Down, hasn't been opened */
okini3939	0:a3c892f39cc1	121	#define LS_STARTING 1 /* Down, been opened */
okini3939	0:a3c892f39cc1	122	#define LS_CLOSED 2 /* Up, hasn't been opened */
okini3939	0:a3c892f39cc1	123	#define LS_STOPPED 3 /* Open, waiting for down event */
okini3939	0:a3c892f39cc1	124	#define LS_CLOSING 4 /* Terminating the connection, not open */
okini3939	0:a3c892f39cc1	125	#define LS_STOPPING 5 /* Terminating, but open */
okini3939	0:a3c892f39cc1	126	#define LS_REQSENT 6 /* We've sent a Config Request */
okini3939	0:a3c892f39cc1	127	#define LS_ACKRCVD 7 /* We've received a Config Ack */
okini3939	0:a3c892f39cc1	128	#define LS_ACKSENT 8 /* We've sent a Config Ack */
okini3939	0:a3c892f39cc1	129	#define LS_OPENED 9 /* Connection available */
okini3939	0:a3c892f39cc1	130
okini3939	0:a3c892f39cc1	131	/*
okini3939	0:a3c892f39cc1	132	* Flags - indicate options controlling FSM operation
okini3939	0:a3c892f39cc1	133	*/
okini3939	0:a3c892f39cc1	134	#define OPT_PASSIVE 1 /* Don't die if we don't get a response */
okini3939	0:a3c892f39cc1	135	#define OPT_RESTART 2 /* Treat 2nd OPEN as DOWN, UP */
okini3939	0:a3c892f39cc1	136	#define OPT_SILENT 4 /* Wait for peer to speak first */
okini3939	0:a3c892f39cc1	137
okini3939	0:a3c892f39cc1	138
okini3939	0:a3c892f39cc1	139	/*
okini3939	0:a3c892f39cc1	140	* Prototypes
okini3939	0:a3c892f39cc1	141	*/
okini3939	0:a3c892f39cc1	142	void fsm_init (fsm*);
okini3939	0:a3c892f39cc1	143	void fsm_lowerup (fsm*);
okini3939	0:a3c892f39cc1	144	void fsm_lowerdown (fsm*);
okini3939	0:a3c892f39cc1	145	void fsm_open (fsm*);
okini3939	0:a3c892f39cc1	146	void fsm_close (fsm, char);
okini3939	0:a3c892f39cc1	147	void fsm_input (fsm, u_char, int);
okini3939	0:a3c892f39cc1	148	void fsm_protreject (fsm*);
okini3939	0:a3c892f39cc1	149	void fsm_sdata (fsm, u_char, u_char, u_char, int);
okini3939	0:a3c892f39cc1	150
okini3939	0:a3c892f39cc1	151
okini3939	0:a3c892f39cc1	152	/*
okini3939	0:a3c892f39cc1	153	* Variables
okini3939	0:a3c892f39cc1	154	*/
okini3939	0:a3c892f39cc1	155	extern int peer_mru[]; /* currently negotiated peer MRU (per unit) */
okini3939	0:a3c892f39cc1	156
okini3939	0:a3c892f39cc1	157	#endif /* FSM_H */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	16 Apr 2011
Imports:	8
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	2
Followers:	3

EthernetNetIf/LPC1768/lwip/netif/ppp/fsm.h@0:a3c892f39cc1, 2011-04-16 (annotated)

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