csu3_am335x/EVSE/GPL/plc-utils.LNX.2.1.20/source/plc/Traffic1.c

/*====================================================================*
*
*   Copyright (c) 2013 Qualcomm Atheros, Inc.
*
*   All rights reserved.
*
*====================================================================*/

/*====================================================================*
 *
 *   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 <cmaier@qca.qualcomm.com>
 *      Matthieu Poullet <m.poullet@avm.de>
 *
 *--------------------------------------------------------------------*/

#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]);
			sleep (1);
		}
	}
	return (0);
}

#endif