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/*====================================================================*
*
* 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.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* signed Antiphon (struct plc * plc);
*
* plc.h
*
* instruct one powerline device to send trash frames to another
* for a given period (in seconds) to establish source device RX
* PHY rate and target device TX PHY rate; this does not work if
* the source device is also the local device, for some reason;
*
*
* Contributor(s):
* Charles Maier
*
*--------------------------------------------------------------------*/
#ifndef ANTIPHON_SOURCE
#define ANTIPHON_SOURCE
#include <memory.h>
#include <errno.h>
#include "../tools/error.h"
#include "../tools/flags.h"
#include "../plc/plc.h"
signed Antiphon (struct plc * plc, byte source [], byte target [])
{
struct channel * channel = (struct channel *)(plc->channel);
struct message * message = (struct message *)(plc->message);
#ifndef __GNUC__
#pragma pack (push,1)
#endif
struct __packed vs_fr_lbk_request
{
struct ethernet_hdr ethernet;
struct qualcomm_hdr qualcomm;
uint8_t DURATION;
uint8_t RESERVED;
uint16_t LENGTH;
uint8_t PACKET [1038];
}
* request = (struct vs_fr_lbk_request *) (message);
#ifndef __GNUC__
#pragma pack (pop)
#endif
if (_allclr (plc->flags, PLC_SILENCE))
{
char sourcename [ETHER_ADDR_LEN * 3];
char targetname [ETHER_ADDR_LEN * 3];
hexdecode (source, ETHER_ADDR_LEN, sourcename, sizeof (sourcename));
hexdecode (target, ETHER_ADDR_LEN, targetname, sizeof (targetname));
fprintf (stderr, "%s %s %s\n", channel->ifname, sourcename, targetname);
}
memset (message, 0, sizeof (* message));
EthernetHeader (&request->ethernet, source, target, channel->type);
QualcommHeader (&request->qualcomm, 0, 41036);
request->DURATION = plc->timer;
request->LENGTH = HTOLE16 (sizeof (request->PACKET));
memset (request->PACKET, 0xA5, sizeof (request->PACKET));
EthernetHeader (request->PACKET, target, source, ETHERTYPE_IP);
plc->packetsize = sizeof (* request);
if (SendMME (plc) <= 0)
{
error (1, errno, CHANNEL_CANTSEND);
}
#if 0
/*
* This causes a multi-device session to terminate if the device has recently
* been removed or powered-off; The device appears to be present but will not
* respond; Also, this terminates a session if the network is overloaded with
* traffic;
*/
if (ReadMME (plc, 0, 41037) <= 0)
{
error (1, errno, CHANNEL_CANTREAD);
}
#endif
sleep (plc->timer);
return (0);
}
#endif
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