csu3_am335x/EVSE/GPL/plc-utils.LNX.2.1.20/source/classes/CPLChannel.hpp

/*====================================================================*
	Copyright (c) 2020 Qualcomm Technologies, Inc.
	All Rights Reserved.
	Confidential and Proprietary - Qualcomm Technologies, Inc.
	******************************************************************
	2013 Qualcomm Atheros, Inc.
*====================================================================*/

 /*====================================================================*
 *
 *   CPLChannel.hpp - interface for the CPLChannel class
 *
 *   Ethernet I/O channel managment for powerline applications;
 *
 *   Contributor(s):
 *	    Charles Maier <charles.maier@intellon.com>
 *
 *--------------------------------------------------------------------*/

#ifndef CPLCHANNEL_HEADER
#define CPLCHANNEL_HEADER

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

#if defined (WINPCAP)
#	include <pcap.h>
#	include <Packet32.h>
#	include <ntddndis.h>
#endif

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

#include "../classes/stdafx.hpp"
#include "../classes/oflagword.hpp"
#include "../classes/ointerface.hpp"
#include "../classes/ointellon.hpp"

/*====================================================================*
 *   class constants;
 *--------------------------------------------------------------------*/

#define CPLCHANNEL_FLAG_VERBOSE (1 << 0)
#define CPLCHANNEL_FLAG_SILENCE (1 << 1)

#define CPLCHANNEL_ETHERTYPE 0x88E1 /* in host byte order */
#define CPLCHANNEL_BPFDEVICE "/dev/bpf%d"
#define CPLCHANNEL_TIMEOUT 100

#define CPLCHANNEL_CANTREAD "Read timeout or network error"
#define CPLCHANNEL_CANTSEND "Send timeout or network error"
#define CPLCHANNEL_WONTDOIT "Device Refused Request"
#define CPLCHANNEL_CANTDOIT "(0x%02X) %s"

#define CPLCHANNEL_BRIDGES_MAX 0xFF
#define CPLCHANNEL_DEVICES_MAX 0xFF

/*====================================================================*
 *   class declaration;
 *--------------------------------------------------------------------*/

class __declspec (dllexport) CPLChannel: public oflagword, public oethernet, public ointerface

{
public:
	explicit CPLChannel (unsigned ifindex, unsigned timeout);
	explicit CPLChannel (char const * ifname,  unsigned timeout);
	virtual ~ CPLChannel ();
	signed Descriptor (void) const;
	signed SendMessage (void const * memory, signed extent);
	signed ReadMessage (void * memory, signed extent);
	signed Bridges (void * memory, size_t extent);
	signed Neighbors (void * memory, size_t extent);
private:
	CPLChannel & init (unsigned timeout);
	CPLChannel & open (void);
	CPLChannel & link (void);
	CPLChannel & dump (void const * memory, size_t extent);
	signed mfd;

#if defined (__APPLE__) || defined (__OpenBSD__)

	unsigned bpf_length;

#elif defined (WINPCAP)

	pcap_t * msocket;
	char merrbuf [PCAP_ERRBUF_SIZE];

#endif
	unsigned mtimeout;

};

/*====================================================================*
 *   end definition;
 *--------------------------------------------------------------------*/

#endif