ReadMFG.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 ReadMFG (struct plc * plc, uint16_t MMTYPE);
     *
     *   plc.h
     *
     *   read a manufacturer specific management message of the given
     *   type in platform independent manner; return the number of bytes
     *   read, 0 on timeout or -1 on error;
     *
     *   see SendMME for the send counterpart to this function;
     *
     *   see ReadMME for the vendor specific version of this function;
     *
     *   readpacket behaves like the read function but there are several
     *   readpacket functions in the toolkit and each performs raw packet
     *   i/o differently depending on environment; they all use a channel
     *   structure;
     *
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *      Nathaniel Houghton <nhoughto@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    #ifndef READMFG_SOURCE
    #define READMFG_SOURCE

    #include <memory.h>

    #include "../plc/plc.h"
    #include "../ether/channel.h"
    #include "../tools/memory.h"
    #include "../tools/flags.h"

    signed ReadMFG (struct plc * plc, uint8_t MMV, uint16_t MMTYPE)

    {
    	struct channel * channel = (struct channel *)(plc->channel);
    	struct message * message = (struct message *)(plc->message);
    	struct homeplug * homeplug = (struct homeplug *)(message);
    	while ((plc->packetsize = readpacket (channel, message, sizeof (* message))) > 0)
    	{
    		if (homeplug->homeplug.MMV != MMV)
    		{
    			continue;
    		}
    		if (homeplug->homeplug.MMTYPE != HTOLE16 (MMTYPE))
    		{
    			continue;
    		}
    		break;
    	}
    	return (plc->packetsize);
    }

    #endif

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