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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.
*
*--------------------------------------------------------------------*/
/*====================================================================*
*
* signed NetworkDevices1 (struct plc * plc, void * memory, size_t extent);
*
* plc.h
*
* return a list powerline network device addresses on a powerline
* network; the list consists of a known device plus all others on
* the same powerline network; the device is defined by the channel
* peer address and appears first in the list;
*
* the device address must be explicit; it cannot be the broadcast
* or localcast address;
*
*
* Contributor(s):
* Charles Maier
*
*--------------------------------------------------------------------*/
#ifndef NETWORKDEVICES1_SOURCE
#define NETWORKDEVICES1_SOURCE
#include <stdint.h>
#include <memory.h>
#include "../tools/memory.h"
#include "../tools/number.h"
#include "../tools/types.h"
#include "../tools/error.h"
#include "../plc/plc.h"
signed NetworkDevices1 (struct plc * plc, void * memory, size_t extent)
{
extern const byte broadcast [ETHER_ADDR_LEN];
extern const byte localcast [ETHER_ADDR_LEN];
struct channel * channel = (struct channel *)(plc->channel);
struct message * message = (struct message *)(plc->message);
uint8_t * origin = (byte *)(memory);
uint8_t * offset = (byte *)(memory);
#ifndef __GNUC__
#pragma pack (push,1)
#endif
struct __packed vs_nw_info_request
{
struct ethernet_hdr ethernet;
struct qualcomm_hdr qualcomm;
}
* request = (struct vs_nw_info_request *)(message);
struct __packed vs_nw_info_confirm
{
struct ethernet_hdr ethernet;
struct qualcomm_hdr qualcomm;
uint8_t data [1];
}
* confirm = (struct vs_nw_info_confirm *)(message);
struct __packed station
{
uint8_t MAC [ETHER_ADDR_LEN];
uint8_t TEI;
uint8_t BDA [ETHER_ADDR_LEN];
uint8_t AVGTX;
uint8_t AVGRX;
}
* station;
struct __packed network
{
uint8_t NID [7];
uint8_t SNID;
uint8_t TEI;
uint8_t ROLE;
uint8_t CCO_MAC [ETHER_ADDR_LEN];
uint8_t CCO_TEI;
uint8_t NUMSTAS;
struct station stations [1];
}
* network;
struct __packed networks
{
uint8_t NUMAVLNS;
struct network networks [1];
}
* networks = (struct networks *) (confirm->data);
#ifndef __GNUC__
#pragma pack (pop)
#endif
ssize_t packetsize;
if (!memcmp (channel->peer, broadcast, sizeof (channel->peer)))
{
error (1, EINVAL, "Can't use broadcast address");
}
if (!memcmp (channel->peer, localcast, sizeof (channel->peer)))
{
error (1, EINVAL, "Can't use localcast address");
}
memset (memory, 0, extent);
memset (message, 0, sizeof (* message));
EthernetHeader (&request->ethernet, channel->peer, channel->host, channel->type);
EthernetHeader (&request->ethernet, channel->peer, channel->host, channel->type);
QualcommHeader (&request->qualcomm, 0, (VS_NW_INFO | MMTYPE_REQ));
if (sendpacket (channel, message, (ETHER_MIN_LEN - ETHER_CRC_LEN)) <= 0)
{
error (1, errno, CHANNEL_CANTSEND);
}
while ((packetsize = readpacket (channel, message, sizeof (* message))) > 0)
{
if (UnwantedMessage (message, packetsize, 0, (VS_NW_INFO | MMTYPE_CNF)))
{
continue;
}
network = (struct network *)(&networks->networks);
while (networks->NUMAVLNS--)
{
if (extent < sizeof (request->ethernet.OSA))
{
break;
}
memcpy (offset, request->ethernet.OSA, sizeof (request->ethernet.OSA));
offset += sizeof (request->ethernet.OSA);
extent -= sizeof (request->ethernet.OSA);
station = (struct station *)(&network->stations);
while (network->NUMSTAS--)
{
if (extent < sizeof (station->MAC))
{
break;
}
memcpy (offset, station->MAC, sizeof (station->MAC));
offset += sizeof (station->MAC);
extent -= sizeof (station->MAC);
station++;
}
network = (struct network *)(station);
}
}
return ((offset - origin) / ETHER_ADDR_LEN);
}
#endif
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