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csu3_am335x


			
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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.  
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   channel.h - raw packet channel definitions and declarations;
 *
 *   the channel structure contains information needed to perform
 *   ISO Layer 2, raw packet I/O in a variety of environments;
 *
 *.  Qualcomm Atheros HomePlug AV Powerline Toolkit
 *:  Copyright (c) 2009-2013 by Qualcomm Atheros Inc. ALL RIGHTS RESERVED;
 *;  For demonstration and evaluation only; Not for production use.
 *
 *   Contributor(s):
 *      Charles Maier &lt;cmaier@qca.qualcomm.com&gt;
 *      Nathaniel Houghton &lt;nathaniel.houghton@qca.qualcomm.com&gt;
 *
 *--------------------------------------------------------------------*/

#ifndef CHANNEL_HEADER
#define CHANNEL_HEADER

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

#include &lt;unistd.h&gt;

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

#include &quot;../ether/ether.h&quot;
#include &quot;../tools/types.h&quot;

/*====================================================================*
 *   sort out the raw socket mess;
 *--------------------------------------------------------------------*/

#if defined (__linux__) || defined (__APPLE__) || defined (__OpenBSD__)
#       ifdef WINPCAP
#               error &quot;Don't enable winpcap on Linux. It won't work.&quot;
#               endif
#       ifdef LIBPCAP
#               error &quot;Don't enable libpcap on Linux. You don't need it.&quot;
#               endif
#elif defined (WIN32)
#       ifndef WINPCAP
#               error &quot;Define preprocessor constant WINPCAP on Windows.&quot;
#               endif
#       ifdef LIBPCAP
#               error &quot;Don't enable libpcap on Windows. It won't work.&quot;
#               endif
#elif defined (__CYGWIN__)
# 	error &quot;cygwin is unsupported!&quot;
#else
#       error &quot;unknown environment&quot;
#endif

/*====================================================================*
 *   channel flagword bitmasks;
 *--------------------------------------------------------------------*/

#define CHANNEL_VERBOSE (1 &lt;&lt; 0)
#define CHANNEL_SILENCE (1 &lt;&lt; 1)
#define CHANNEL_WARNING (1 &lt;&lt; 2)
#define CHANNEL_SUCCESS (1 &lt;&lt; 3)
#define CHANNEL_FAILURE (1 &lt;&lt; 4)
#define CHANNEL_MONITOR (1 &lt;&lt; 5)

#define CHANNEL_UPDATE_TARGET (1 &lt;&lt; 5) /* used by efsu only */
#define CHANNEL_UPDATE_SOURCE (1 &lt;&lt; 6) /* used by efsu only */
#define CHANNEL_LISTEN (1 &lt;&lt; 7)        /* used by efsu only */

#define CHANNEL_ETHNUMBER 2
#if defined (__linux__)
#       define CHANNEL_ETHDEVICE &quot;eth1&quot;
#elif defined (__APPLE__)
#       define CHANNEL_ETHDEVICE &quot;en0&quot;
#       define CHANNEL_BPFDEVICE &quot;/dev/bpf%d&quot;
#elif defined (__OpenBSD__)
#       define CHANNEL_ETHDEVICE &quot;bce0&quot;
#       define CHANNEL_BPFDEVICE &quot;/dev/bpf%d&quot;
#else
#       define CHANNEL_ETHDEVICE &quot;nic1&quot;
#endif

#define CHANNEL_FOREVER (unsigned)(-1)
#define CHANNEL_BAILOUT 0
#define CHANNEL_FLAGS 0

#if defined (WIN32)
#define CHANNEL_CAPTURE 50 
#define CHANNEL_TIMEOUT 200   
#else
#define CHANNEL_CAPTURE 15 
#define CHANNEL_TIMEOUT 50   
#endif

/*====================================================================*
 *   common channel error messages;
 *--------------------------------------------------------------------*/

#define CHANNEL_CANTSEND &quot;%s: Send timeout or network error&quot;, __func__
#define CHANNEL_CANTREAD &quot;%s: Read timeout or network error&quot;, __func__

/*====================================================================*
 *   channel ethertype definitions;
 *--------------------------------------------------------------------*/

#if !defined (__linux__)
#       define ETH_P_802_2 1
#endif

/*====================================================================*
 *   communication channel structure;
 *--------------------------------------------------------------------*/

typedef struct channel

{
	signed fd;
	signed ifstate;
	signed ifindex;
	char const * ifname;
	uint8_t peer [ETHER_ADDR_LEN];
	uint8_t host [ETHER_ADDR_LEN];
	uint16_t type;

#if defined (__linux__)

#elif defined (__APPLE__) || defined (__OpenBSD__)

	struct bpf
	{
		signed bpf_length;
		uint8_t * bpf_buffer;
		uint8_t * bpf_bp;
		signed bpf_bufused;
	}
	* bpf;

#elif defined (WINPCAP) || defined (LIBPCAP)

	pcap_t * socket;
	char errbuf [PCAP_ERRBUF_SIZE];

#else
#error &quot;Unknown Environment&quot;
#endif

	signed capture;
	signed timeout;
	flag_t flags;
}

CHANNEL;

/*====================================================================*
 *   channel functions;
 *--------------------------------------------------------------------*/

signed openchannel (struct channel *);
signed closechannel (struct channel const *);
ssize_t sendpacket (struct channel const *, void * memory, ssize_t extent);
ssize_t readpacket (struct channel const *, void * memory, ssize_t extent);

/*====================================================================*
 *
 *--------------------------------------------------------------------*/

#endif


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