m2icmplib.c

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/* m2IcmpLib.c - MIB-II ICMP-group API for SNMP Agents */

/* Copyright 1984-1995 Wind River Systems, Inc. */
#include "copyright_wrs.h"

/*
modification history
--------------------
01c,25jan95,jdi  doc cleanup.
01b,11nov94,rhp  edited man pages
01a,08dec93,jag  written
*/
/*
DESCRIPTION
This library provides MIB-II services for the ICMP group.  It provides routines
to initialize the group, and to access the group scalar variables. For a
broader description of MIB-II services, see the manual entry for m2Lib.

USING THIS LIBRARY
This library can be initialized and deleted by calling the routines
m2IcmpInit() and m2IcmpDelete() respectively, if only the ICMP group's services
are needed.  If full MIB-II support is used, this group and all other
groups can be initialized and deleted by calling m2Init() and
m2Delete().

The group scalar variables are accessed by calling
m2IcmpGroupInfoGet() as follows:
.CS
    M2_ICMP   icmpVars;

    if (m2IcmpGroupInfoGet (&icmpVars) == OK)
	/@ values in icmpVars are valid @/
.CE

INCLUDE FILES: m2Lib.h
 
SEE ALSO:
m2Lib, m2IfLib, m2IpLib, m2TcpLib, m2SysLib
*/

/* includes */
#include <vxWorks.h>
#include "m2Lib.h"
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <netinet/icmp_var.h>
#include "errnoLib.h"
#include "semLib.h"

/* external declarations */

extern struct icmpstat    icmpstat;   	/* ICMP statistics structure */

/*******************************************************************************
*
* m2IcmpInit - initialize MIB-II ICMP-group access
*
* This routine allocates the resources needed to allow access to the MIB-II
* ICMP-group variables.  This routine must be called before any ICMP variables
* can be accessed.
*
* RETURNS: OK, always.
*
* SEE ALSO: m2IcmpGroupInfoGet(), m2IcmpDelete()
*/
STATUS m2IcmpInit (void)
    {
    return (OK);
    }

/******************************************************************************
*
* m2IcmpGroupInfoGet - get the MIB-II ICMP-group global variables
*
* This routine fills in the ICMP structure at <pIcmpInfo> with the 
* MIB-II ICMP scalar variables.
*
* RETURNS: OK, or ERROR if the input parameter <pIcmpInfo> is invalid.
*
* ERRNO:
* S_m2Lib_INVALID_PARAMETER
*
* SEE ALSO: m2IcmpInit(), m2IcmpDelete()
*/
STATUS m2IcmpGroupInfoGet
    (
    M2_ICMP * pIcmpInfo          /* pointer to the ICMP group structure */
    )
    {
    int ix;
 
    /* Validate Pointer to ICMP structure */
 
    if (pIcmpInfo == NULL)
	{
	errnoSet (S_m2Lib_INVALID_PARAMETER);
        return (ERROR);
	}
 
    pIcmpInfo->icmpInMsgs  = 0;
    pIcmpInfo->icmpOutMsgs = 0;
 
    /* Add the counts of all the packet types Sent and Received */
 
    for (ix = 0; ix < ICMP_MAXTYPE; ix++)
        {
        pIcmpInfo->icmpInMsgs      += icmpstat.icps_inhist [ix];
        pIcmpInfo->icmpOutMsgs     += icmpstat.icps_outhist [ix];
        }
 
    /* Add to the Input count the ICMP packets received in error */
 
    pIcmpInfo->icmpInMsgs          += icmpstat.icps_badcode +
                                      icmpstat.icps_tooshort +
                                      icmpstat.icps_checksum +
                                      icmpstat.icps_badlen;
 
    pIcmpInfo->icmpInErrors         = icmpstat.icps_badcode +
                                      icmpstat.icps_tooshort +
                                      icmpstat.icps_checksum +
                                      icmpstat.icps_badlen;
 
    pIcmpInfo->icmpInDestUnreachs   = icmpstat.icps_inhist [ICMP_UNREACH];
    pIcmpInfo->icmpInTimeExcds      = icmpstat.icps_inhist [ICMP_TIMXCEED];
    pIcmpInfo->icmpInParmProbs      = icmpstat.icps_inhist [ICMP_PARAMPROB];
    pIcmpInfo->icmpInSrcQuenchs     = icmpstat.icps_inhist [ICMP_SOURCEQUENCH];
    pIcmpInfo->icmpInRedirects      = icmpstat.icps_inhist [ICMP_REDIRECT];
    pIcmpInfo->icmpInEchos          = icmpstat.icps_inhist [ICMP_ECHO];
    pIcmpInfo->icmpInEchoReps       = icmpstat.icps_inhist [ICMP_ECHOREPLY];
    pIcmpInfo->icmpInTimestamps     = icmpstat.icps_inhist [ICMP_TSTAMP];
    pIcmpInfo->icmpInTimestampReps  = icmpstat.icps_inhist [ICMP_TSTAMPREPLY];
    pIcmpInfo->icmpInAddrMasks      = icmpstat.icps_inhist [ICMP_MASKREQ];
    pIcmpInfo->icmpInAddrMaskReps   = icmpstat.icps_inhist [ICMP_MASKREPLY];
 
    pIcmpInfo->icmpOutErrors        = icmpstat.icps_error;
    pIcmpInfo->icmpOutDestUnreachs  = icmpstat.icps_outhist [ICMP_UNREACH];
    pIcmpInfo->icmpOutTimeExcds     = icmpstat.icps_outhist [ICMP_TIMXCEED];
    pIcmpInfo->icmpOutParmProbs     = icmpstat.icps_outhist [ICMP_PARAMPROB];
    pIcmpInfo->icmpOutSrcQuenchs    = icmpstat.icps_outhist [ICMP_SOURCEQUENCH];
    pIcmpInfo->icmpOutRedirects     = icmpstat.icps_outhist [ICMP_REDIRECT];
    pIcmpInfo->icmpOutEchos         = icmpstat.icps_outhist [ICMP_ECHO];
    pIcmpInfo->icmpOutEchoReps      = icmpstat.icps_outhist [ICMP_ECHOREPLY];
    pIcmpInfo->icmpOutTimestamps    = icmpstat.icps_outhist [ICMP_TSTAMP];
    pIcmpInfo->icmpOutTimestampReps = icmpstat.icps_outhist [ICMP_TSTAMPREPLY];
    pIcmpInfo->icmpOutAddrMasks     = icmpstat.icps_outhist [ICMP_MASKREQ];
    pIcmpInfo->icmpOutAddrMaskReps  = icmpstat.icps_outhist [ICMP_MASKREPLY];
 
    return (OK);
    }

/*******************************************************************************
*
* m2IcmpDelete - delete all resources used to access the ICMP group
*
* This routine frees all the resources allocated at the time the ICMP group was
* initialized.  The ICMP group should not be accessed after this routine has 
* been called.
*
* RETURNS: OK, always.
*
* SEE ALSO: m2IcmpInit(), m2IcmpGroupInfoGet()
*/
STATUS m2IcmpDelete (void)
    {
    return (OK);
    }