Lo.cc

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "Lo.h"
#include "modules/system/network-stack/NetworkStack.h"
#include "pedigree/kernel/Log.h"
#include "pedigree/kernel/machine/Machine.h"
#include "pedigree/kernel/machine/Network.h"
#include "pedigree/kernel/processor/Processor.h"

#include "modules/system/network-stack/RoutingTable.h"

Loopback Loopback::m_Instance;

static uint8_t g_LocalIpv6[16] = {0, 0, 0, 0, 0, 0, 0, 0,
                                  0, 0, 0, 0, 0, 0, 0, 1};

Loopback::Loopback() : Network()
{
    setSpecificType(String("Loopback-card"));
    NetworkStack::instance().registerDevice(this);
    NetworkStack::instance().setLoopback(this);

    m_StationInfo.ipv4.setIp(Network::convertToIpv4(127, 0, 0, 1));
    m_StationInfo.subnetMask.setIp(Network::convertToIpv4(255, 0, 0, 0));
    m_StationInfo.mac.setMac(static_cast<uint8_t>(0));

    m_StationInfo.ipv6 = new IpAddress(g_LocalIpv6);
    m_StationInfo.ipv6->setIpv6Prefix(128);
    m_StationInfo.nIpv6Addresses = 1;
}

Loopback::Loopback(Network *pDev) : Network(pDev)
{
    setSpecificType(String("Loopback-card"));
    NetworkStack::instance().registerDevice(this);
    NetworkStack::instance().setLoopback(this);

    m_StationInfo.ipv4.setIp(Network::convertToIpv4(127, 0, 0, 1));
    m_StationInfo.subnetMask.setIp(Network::convertToIpv4(255, 0, 0, 0));
    m_StationInfo.mac.setMac(static_cast<uint8_t>(0));

    m_StationInfo.ipv6 = new IpAddress(g_LocalIpv6);
    m_StationInfo.ipv6->setIpv6Prefix(128);
    m_StationInfo.nIpv6Addresses = 1;
}

Loopback::~Loopback()
{
}

bool Loopback::send(size_t nBytes, uintptr_t buffer)
{
    if (nBytes > 0xffff)
    {
        ERROR("Loopback: Attempt to send a packet with size > 64 KB");
        return false;
    }
    NetworkStack::instance().receive(nBytes, buffer, this, 0);
    return true;
}

bool Loopback::setStationInfo(StationInfo info)
{
    // Nothing here is modifiable
    return true;
}

StationInfo Loopback::getStationInfo()
{
    return m_StationInfo;
}