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			efeu.c
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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 &quot;AS IS&quot; 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.  
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   edeu.c - Ethernet Frame Echo Utility
 *
 *   Listen for incoming Ethernet II frames and write frame data to
 *   stdout as a continuous binary data stream. Since frame data can
 *   contain anything, users should send program output to a file or
 *   pipe it through a filter program to prevent corruption of the
 *   terminal session. If all incoming data is ASCII then directing
 *   stdout to the console should not cause any problems.
 *
 *   this program can be used as a data target when testing AR6405
 *   UART applications; use program edsu to send files from a remote
 *   host and this program to display or save them;
 *
 *
 *   Contributor(s):
 *      Charles Maier &lt;cmaier@qca.qualcomm.com&gt;
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *   system header files;
 *--------------------------------------------------------------------*/

#include &lt;fcntl.h&gt;
#include &lt;stdio.h&gt;
#include &lt;limits.h&gt;
#include &lt;ctype.h&gt;
#include &lt;unistd.h&gt;
#include &lt;stdint.h&gt;
#include &lt;stdlib.h&gt;
#include &lt;string.h&gt;
#include &lt;errno.h&gt;

#ifdef __linux__
#include &lt;net/if.h&gt;
#include &lt;net/if_arp.h&gt;
#include &lt;netpacket/packet.h&gt;
#include &lt;signal.h&gt;
#endif

/*====================================================================*
 *   custom header files;
 *--------------------------------------------------------------------*/

#include &quot;../tools/getoptv.h&quot;
#include &quot;../tools/putoptv.h&quot;
#include &quot;../tools/memory.h&quot;
#include &quot;../tools/number.h&quot;
#include &quot;../tools/types.h&quot;
#include &quot;../tools/flags.h&quot;
#include &quot;../tools/error.h&quot;
#include &quot;../ether/channel.h&quot;

/*====================================================================*
 *   custom source files;
 *--------------------------------------------------------------------*/

#ifndef MAKEFILE
#include &quot;../tools/getoptv.c&quot;
#include &quot;../tools/putoptv.c&quot;
#include &quot;../tools/version.c&quot;
#include &quot;../tools/hexdump.c&quot;
#include &quot;../tools/hexdecode.c&quot;
#include &quot;../tools/hexstring.c&quot;
#include &quot;../tools/uintspec.c&quot;
#include &quot;../tools/memswap.c&quot;
#include &quot;../tools/todigit.c&quot;
#include &quot;../tools/error.c&quot;
#endif

#ifndef MAKEFILE
#include &quot;../ether/channel.c&quot;
#include &quot;../ether/openchannel.c&quot;
#include &quot;../ether/closechannel.c&quot;
#include &quot;../ether/sendpacket.c&quot;
#include &quot;../ether/readpacket.c&quot;
#endif

/*====================================================================*
 *   program constants;
 *--------------------------------------------------------------------*/

#define EFEU_INTERFACE &quot;PLC&quot;
#define EFEU_ETHERTYPE ETH_P_802_2

/*====================================================================*
 *
 *   int main (int argc, char * argv[]);
 *
 *
 *--------------------------------------------------------------------*/

int main (int argc, char const * argv [])

{
	extern struct channel channel;
	struct ethernet_frame frame;
	signed length;
	static char const * optv [] =
	{
		&quot;e:i:qt:v&quot;,
		PUTOPTV_S_DIVINE,
		&quot;Qualcomm Atheros Ethernet Frame Echo Utility&quot;,
		&quot;e x\tethertype is (x) [&quot; LITERAL (EFEU_ETHERTYPE) &quot;]&quot;,

#if defined (WINPCAP) || defined (LIBPCAP)

		&quot;i n\thost interface is (n) [&quot; LITERAL (CHANNEL_ETHNUMBER) &quot;]&quot;,

#else

		&quot;i s\thost interface is (s) [&quot; LITERAL (CHANNEL_ETHDEVICE) &quot;]&quot;,

#endif

		&quot;q\tsuppress normal output&quot;,
		&quot;t n\tread timeout is (n) milliseconds [&quot; LITERAL (CHANNEL_FOREVER) &quot;]&quot;,
		&quot;v\tverbose messages on stdout&quot;,
		(char const *) (0)
	};
	signed c;
	channel.type = EFEU_ETHERTYPE;
	channel.timeout = CHANNEL_FOREVER;
	if (getenv (EFEU_INTERFACE))
	{

#if defined (WINPCAP) || defined (LIBPCAP)

		channel.ifindex = atoi (getenv (EFEU_INTERFACE));

#else

		channel.ifname = strdup (getenv (EFEU_INTERFACE));

#endif

	}
	optind = 1;
	while ((c = getoptv (argc, argv, optv)) != -1)
	{
		switch (c)
		{
		case 'e':
			channel.type = (uint16_t)(basespec (optarg, 16, sizeof (channel.type)));
			break;
		case 'i':

#if defined (WINPCAP) || defined (LIBPCAP)

			channel.ifindex = atoi (optarg);

#else

			channel.ifname = optarg;

#endif

			break;
		case 'q':
			_setbits (channel.flags, CHANNEL_SILENCE);
			break;
		case 't':
			channel.timeout = (signed)(uintspec (optarg, 0, UINT_MAX));
			break;
		case 'v':
			_setbits (channel.flags, CHANNEL_VERBOSE);
			break;
		default:
			break;
		}
	}
	argc -= optind;
	argv += optind;
	if (argc)
	{
		error (1, ECANCELED, ERROR_TOOMANY);
	}
	openchannel (&amp;channel);
	while ((length = readpacket (&amp;channel, &amp;frame, sizeof (frame))) &gt; 0)
	{
		memswap (&amp;frame.frame_dhost, &amp;frame.frame_shost, sizeof (frame.frame_dhost));
		if (sendpacket (&amp;channel, &amp;frame, length) != length)
		{
			error (1, errno, CHANNEL_CANTSEND);
		}
	}
	closechannel (&amp;channel);
	return (0);
}


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