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channel.h
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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 "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.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* 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 <cmaier@qca.qualcomm.com>
* Nathaniel Houghton <nathaniel.houghton@qca.qualcomm.com>
*
*--------------------------------------------------------------------*/
#ifndef CHANNEL_HEADER
#define CHANNEL_HEADER
/*====================================================================*
* system header files;
*--------------------------------------------------------------------*/
#include <unistd.h>
/*====================================================================*
* custom header files;
*--------------------------------------------------------------------*/
#include "../ether/ether.h"
#include "../tools/types.h"
/*====================================================================*
* sort out the raw socket mess;
*--------------------------------------------------------------------*/
#if defined (__linux__) || defined (__APPLE__) || defined (__OpenBSD__)
# ifdef WINPCAP
# error "Don't enable winpcap on Linux. It won't work."
# endif
# ifdef LIBPCAP
# error "Don't enable libpcap on Linux. You don't need it."
# endif
#elif defined (WIN32)
# ifndef WINPCAP
# error "Define preprocessor constant WINPCAP on Windows."
# endif
# ifdef LIBPCAP
# error "Don't enable libpcap on Windows. It won't work."
# endif
#elif defined (__CYGWIN__)
# error "cygwin is unsupported!"
#else
# error "unknown environment"
#endif
/*====================================================================*
* channel flagword bitmasks;
*--------------------------------------------------------------------*/
#define CHANNEL_VERBOSE (1 << 0)
#define CHANNEL_SILENCE (1 << 1)
#define CHANNEL_WARNING (1 << 2)
#define CHANNEL_SUCCESS (1 << 3)
#define CHANNEL_FAILURE (1 << 4)
#define CHANNEL_MONITOR (1 << 5)
#define CHANNEL_UPDATE_TARGET (1 << 5) /* used by efsu only */
#define CHANNEL_UPDATE_SOURCE (1 << 6) /* used by efsu only */
#define CHANNEL_LISTEN (1 << 7) /* used by efsu only */
#define CHANNEL_ETHNUMBER 2
#if defined (__linux__)
# define CHANNEL_ETHDEVICE "eth1"
#elif defined (__APPLE__)
# define CHANNEL_ETHDEVICE "en0"
# define CHANNEL_BPFDEVICE "/dev/bpf%d"
#elif defined (__OpenBSD__)
# define CHANNEL_ETHDEVICE "bce0"
# define CHANNEL_BPFDEVICE "/dev/bpf%d"
#else
# define CHANNEL_ETHDEVICE "nic1"
#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 "%s: Send timeout or network error", __func__
#define CHANNEL_CANTREAD "%s: Read timeout or network error", __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 "Unknown Environment"
#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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