/*====================================================================*
*
* Copyright (c) 2013 Qualcomm Atheros, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted (subject to the limitations
* in the disclaimer below) provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* * Neither the name of Qualcomm Atheros nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
* GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
* COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* void slac_connect (struct session * session);
*
* slac.h
*
* compute the arithmetic mean of session attenuation values and
* compare to the session limit; average attenuation greater than
* the session limit is considered a bad connection;
*
*--------------------------------------------------------------------*/
#ifndef SLAC_AVERAGE_SOURCE
#define SLAC_AVERAGE_SOURCE
#include "../tools/error.h"
#include "../tools/flags.h"
#include "../tools/memory.h"
#include "../iso15118/slac.h"
signed slac_connect (struct session * session)
{
unsigned group = 0;
unsigned total = 0;
if (session->NumGroups > SIZEOF (session->AAG))
{
return (slac_debug (session, session->exit, __func__, "Too much data to analyse!"));
}
if (session->NumGroups > 0)
{
char string [512];
while (group < session->NumGroups)
{
total += session->AAG [group];
group++;
}
total /= group;
if (total > session->limit)
{
char string [512];
slac_debug (session, 0, __func__, "Average attenuation (%u) more than limit (%u) frow %d groups", total, session->limit, group);
slac_debug (session, 0, __func__, "%s", HEXSTRING (string, session->AAG));
return (- 1);
}
if (total > 0)
{
slac_debug (session, 0, __func__, "Average attenuation (%u) less than limit (%u) from %d groups", total, session->limit, group);
slac_debug (session, 0, __func__, "%s", HEXSTRING (string, session->AAG));
return (0);
}
}
return (slac_debug (session, session->exit, __func__, "Nothing to analyse"));
}
#endif