Traffic2.c
Author: cmaier@cmassoc.net

    /*====================================================================*
     *
     *   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 Traffic2 (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 AR7x00 chipsets due to chipset design
     *   changes; use Traffic1 for INT6x00 chipsets;
     *
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *      Matthieu Poullet <m.poullet@avm.de>
     *
     *--------------------------------------------------------------------*/

    #ifndef TRAFFIC2_SOURCE
    #define TRAFFIC2_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 Traffic2 (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_fmi qualcomm;
    	}
    	* request = (struct vs_nw_info_request *)(message);
    	struct __packed vs_nw_info_confirm
    	{
    		struct ethernet_hdr ethernet;
    		struct qualcomm_fmi qualcomm;
    		uint8_t SUB_VERSION;
    		uint8_t Reserved;
    		uint16_t DATA_LEN;
    		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 Reserved [3];
    		uint8_t BDA [ETHER_ADDR_LEN];
    		uint16_t AVGTX;
    		uint8_t COUPLING;
    		uint8_t Reserved3;
    		uint16_t AVGRX;
    		uint16_t Reserved4;
    	}
    	* station;
    	struct __packed network
    	{
    		uint8_t NID [7];
    		uint8_t Reserved1 [2];
    		uint8_t SNID;
    		uint8_t TEI;
    		uint8_t Reserved2 [4];
    		uint8_t ROLE;
    		uint8_t CCO_MAC [ETHER_ADDR_LEN];
    		uint8_t CCO_TEI;
    		uint8_t Reserved3 [3];
    		uint8_t NUMSTAS;
    		uint8_t Reserved4 [5];
    		struct station stations [1];
    	}
    	* network;
    	struct __packed networks
    	{
    		uint8_t Reserved;
    		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);
    		QualcommHeader1 (&request->qualcomm, 1, (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, 1, (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

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