csu3_am335x/EVSE/GPL/open-plc-utils-0.3/plc/Traffic1.c

/*====================================================================*
 *
 *   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 Traffic1 (struct plc * plc);
 *
 *   generate bi-directional traffic between a local device and all
 *   remote devices on a powerline network; remote devices need not
 *   be connected; no traffic is generated between remote devices;
 *
 *   this function is similar to NetworkTraffic but takes less time
 *   since not all powerline paths are exercised and those that are
 *   can be exercised in parallel;
 *
 *   this function is for INT6x00 chipsets only due to changes in chip
 *   design; use Traffic2 for AR7x00 chipsets;
 *
 *
 *   Contributor(s):
 *      Charles Maier
 *      Matthieu Poullet
 *
 *--------------------------------------------------------------------*/

#ifndef TRAFFIC1_SOURCE
#define TRAFFIC1_SOURCE

#include <memory.h>
#include <errno.h>

#include "../tools/memory.h"
#include "../tools/error.h"
#include "../tools/flags.h"
#include "../mme/mme.h"
#include "../plc/plc.h"

signed Traffic1 (struct plc * plc)

{
	struct channel * channel = (struct channel *)(plc->channel);
	struct message * message = (struct message *)(plc->message);

#ifndef __GNUC__
#pragma pack (push,1)
#endif

	struct __packed vs_nw_info_request
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
	}
	* request = (struct vs_nw_info_request *)(message);
	struct __packed vs_nw_info_confirm
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t DATA [1];
	}
	* confirm = (struct vs_nw_info_confirm *)(message);
	struct __packed station
	{
		uint8_t MAC [ETHER_ADDR_LEN];
		uint8_t TEI;
		uint8_t BDA [ETHER_ADDR_LEN];
		uint8_t AVGTX;
		uint8_t AVGRX;
	}
	* station;
	struct __packed network
	{
		uint8_t NID [7];
		uint8_t SNID;
		uint8_t TEI;
		uint8_t ROLE;
		uint8_t CCO_MAC [ETHER_ADDR_LEN];
		uint8_t CCO_TEI;
		uint8_t NUMSTAS;
		struct station stations [1];
	}
	* network;
	struct __packed networks
	{
		uint8_t NUMAVLNS;
		struct network networks [1];
	}
	* networks = (struct networks *) (confirm->DATA);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	byte bridgelist [255] [ETHER_ADDR_LEN];
	unsigned bridges = LocalDevices (channel, message, bridgelist, sizeof (bridgelist));
	while (bridges--)
	{
		byte devicelist [255] [ETHER_ADDR_LEN];
		unsigned devices = 0;
		memset (message, 0, sizeof (* message));
		EthernetHeader (&request->ethernet, bridgelist [bridges], channel->host, channel->type);
		QualcommHeader (&request->qualcomm, 0, (VS_NW_INFO | MMTYPE_REQ));
		plc->packetsize = ETHER_MIN_LEN - ETHER_CRC_LEN;
		if (SendMME (plc) <= 0)
		{
			error (0, errno, CHANNEL_CANTSEND);
			continue;
		}
		if (ReadMME (plc, 0, (VS_NW_INFO | MMTYPE_CNF)) <= 0)
		{
			error (0, errno, CHANNEL_CANTREAD);
			continue;
		}
		memcpy (devicelist [devices++], request->ethernet.OSA, sizeof (devicelist [0]));
		network = (struct network *)(&networks->networks);
		while (networks->NUMAVLNS--)
		{
			station = (struct station *)(&network->stations);
			while (network->NUMSTAS--)
			{
				memcpy (devicelist [devices++], station->MAC, sizeof (devicelist [0]));
				station++;
			}
			network = (struct network *)(station);
		}
		while (devices-- > 1)
		{
			Transmit (plc, devicelist [0], devicelist [devices]);
			Antiphon (plc, devicelist [devices], devicelist [0]);
		}
	}
	return (0);
}


#endif