snmp.h

eCos/RedBoot for勤研ARM AnywhereII(4510) 含全部源代码

//==========================================================================
//
//      ./lib/current/include/snmp.h
//
//
//==========================================================================
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// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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//####ECOSGPLCOPYRIGHTEND####
//####UCDSNMPCOPYRIGHTBEGIN####
//
// -------------------------------------------
//
// Portions of this software may have been derived from the UCD-SNMP
// project,  <http://ucd-snmp.ucdavis.edu/>  from the University of
// California at Davis, which was originally based on the Carnegie Mellon
// University SNMP implementation.  Portions of this software are therefore
// covered by the appropriate copyright disclaimers included herein.
//
// The release used was version 4.1.2 of May 2000.  "ucd-snmp-4.1.2"
// -------------------------------------------
//
//####UCDSNMPCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    hmt
// Contributors: hmt
// Date:         2000-05-30
// Purpose:      Port of UCD-SNMP distribution to eCos.
// Description:  
//              
//
//####DESCRIPTIONEND####
//
//==========================================================================
/********************************************************************
       Copyright 1989, 1991, 1992 by Carnegie Mellon University

			  Derivative Work -
Copyright 1996, 1998, 1999, 2000 The Regents of the University of California

			 All Rights Reserved

Permission to use, copy, modify and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appears in all copies and
that both that copyright notice and this permission notice appear in
supporting documentation, and that the name of CMU and The Regents of
the University of California not be used in advertising or publicity
pertaining to distribution of the software without specific written
permission.

CMU AND THE REGENTS OF THE UNIVERSITY OF CALIFORNIA DISCLAIM ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL CMU OR
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA BE LIABLE FOR ANY SPECIAL,
INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
FROM THE 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.
*********************************************************************/
#ifndef SNMP_H
#define SNMP_H

#ifdef __cplusplus
extern "C" {
#endif
/*
 * Definitions for the Simple Network Management Protocol (RFC 1067).
 *
 *
 */
/***********************************************************
	Copyright 1988, 1989 by Carnegie Mellon University

                      All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of CMU not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
CMU 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.
******************************************************************/


#define SNMP_PORT	    161         /* standard UDP port for SNMP agents
                                           to receive requests messages */
#define SNMP_TRAP_PORT	    162         /* standard UDP port for SNMP
                                           managers to receive notificaion
                                          (trap and inform) messages */

#define SNMP_MAX_LEN	    1500        /* typical maximum message size */
#define SNMP_MIN_MAX_LEN    484         /* minimum maximum message size */

/* SNMP versions */
/* There currently exists the following SNMP versions.
 * (Note that only SNMPv1 is in widespread usage, and this code supports
 *  only SNMPv1, SNMPv2c, and SNMPv3.
 *
 *  SNMPv1 - (full) the original version, defined by RFC 1157
 *  SNMPsec - (historic) the first attempt to add strong security
 *             to SNMPv1, defined by RFCs 1351, 1352, and 1353.
 *  SNMPv2p - (historic) party-based SNMP, which was another
 *             attempt to add strong security to SNMP, defined
 *             by RFCs 1441, 1445, 1446, 1448, and 1449.
 *  SNMPv2c - (experimental) community string-based SNMPv2,
 *             which was an attempt to combine the protocol
 *             operations of SNMPv2 with the security of
 *             SNMPv1, defined by RFCs 1901, 1905, and 1906.
 *  SNMPv2u - (experimental) user-based SNMPv2, which provided
 *             security based on user names and protocol
 *             operations of SNMPv2, defined by RFCs 1905,
 *             1909, and 1910.
 *  SNMPv2* (or SNMPv2star) - (experimental) an attempt to add the
 *             best features of SNMPv2p and SNMPv2u, defined
 *             by unpublished documents found at WEB site
 *             owned by SNMP Research (a leading SNMP vendor)
 *  SNMPv3 - the current attempt by the IETF working group to merge
 *             the SNMPv2u and SNMPv2* proposals into a more widly
 *             accepted SNMPv3.  It is defined by not yet published
 *             documents of the IETF SNMPv3 WG.
 *
 * SNMPv1, SNMPv2c, SNMPv2u, and SNMPv3 messages have a common
 * form, which is an ASN.1 sequence containing a message version 
 * field, followed by version dependent fields.
 * SNMPsec, SNMPv2p, and SNMPv2* messages have a common form,
 * which is a tagged ASN.1 context specific sequence containing
 * message dependent fields.
 *
 * In the #defines for the message versions below, the value
 * for SNMPv1, SNMPv2c, SNMPv2u, and SNMPv3 messages is the
 * value of the message version field. Since SNMPsec, SNMPv2p,
 * and SNMPv2* messages do not have a message version field,
 * the value in the defines for them is choosen to be a large
 * arbitrary number.
 *
 * Note that many of the version ID's are defined below purely for
 * documentational purposes.  At this point the only protocol planned
 * for future implementations is SNMP3, as the other v2 protocols will
 * not be supported by the IETF (ie, v2u, v2sec, v2star) or used by
 * the snmp community at large (at the time of this writing).  */

/* versions based on version field */
#define SNMP_VERSION_1	   0
#define SNMP_VERSION_2c    1
#define SNMP_VERSION_2u    2   /* not (will never be) supported by this code */
#define SNMP_VERSION_3     3   

/* versions not based on a version field */
#define SNMP_VERSION_sec   128 /* not (will never be) supported by this code */
#define SNMP_VERSION_2p	   129
#define SNMP_VERSION_2star 130 /* not (will never be) supported by this code */

/* PDU types in SNMPv1, SNMPsec, SNMPv2p, SNMPv2c, SNMPv2u, SNMPv2*, and SNMPv3 */