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/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Checked.h>
#include <AK/Singleton.h>
#include <Kernel/CommandLine.h>
#include <Kernel/Debug.h>
#include <Kernel/IO.h>
#include <Kernel/Multiboot.h>
#include <Kernel/Net/E1000NetworkAdapter.h>
#include <Kernel/Net/LoopbackAdapter.h>
#include <Kernel/Net/NE2000NetworkAdapter.h>
#include <Kernel/Net/NetworkingManagement.h>
#include <Kernel/Net/RTL8139NetworkAdapter.h>
#include <Kernel/Panic.h>
#include <Kernel/VM/AnonymousVMObject.h>
namespace Kernel {
static AK::Singleton<NetworkingManagement> s_the;
NetworkingManagement& NetworkingManagement::the()
{
return *s_the;
}
bool NetworkingManagement::is_initialized()
{
return s_the.is_initialized();
}
UNMAP_AFTER_INIT NetworkingManagement::NetworkingManagement()
{
}
NonnullRefPtr<NetworkAdapter> NetworkingManagement::loopback_adapter() const
{
return *m_loopback_adapter;
}
void NetworkingManagement::for_each(Function<void(NetworkAdapter&)> callback)
{
Locker locker(m_lock);
for (auto& it : m_adapters)
callback(it);
}
RefPtr<NetworkAdapter> NetworkingManagement::from_ipv4_address(const IPv4Address& address) const
{
Locker locker(m_lock);
for (auto& adapter : m_adapters) {
if (adapter.ipv4_address() == address || adapter.ipv4_broadcast() == address)
return adapter;
}
if (address[0] == 0 && address[1] == 0 && address[2] == 0 && address[3] == 0)
return m_loopback_adapter;
if (address[0] == 127)
return m_loopback_adapter;
return {};
}
RefPtr<NetworkAdapter> NetworkingManagement::lookup_by_name(const StringView& name) const
{
Locker locker(m_lock);
RefPtr<NetworkAdapter> found_adapter;
for (auto& it : m_adapters) {
if (it.name() == name)
found_adapter = it;
}
return found_adapter;
}
UNMAP_AFTER_INIT RefPtr<NetworkAdapter> NetworkingManagement::determine_network_device(PCI::Address address) const
{
if (auto candidate = E1000NetworkAdapter::try_to_initialize(address); !candidate.is_null())
return candidate;
if (auto candidate = RTL8139NetworkAdapter::try_to_initialize(address); !candidate.is_null())
return candidate;
if (auto candidate = NE2000NetworkAdapter::try_to_initialize(address); !candidate.is_null())
return candidate;
return {};
}
bool NetworkingManagement::initialize()
{
if (!kernel_command_line().is_physical_networking_disabled()) {
PCI::enumerate([&](const PCI::Address& address, PCI::ID) {
// Note: PCI class 2 is the class of Network devices
if (PCI::get_class(address) != 0x02)
return;
if (auto adapter = determine_network_device(address); !adapter.is_null())
m_adapters.append(adapter.release_nonnull());
});
}
auto loopback = LoopbackAdapter::create();
m_adapters.append(loopback);
m_loopback_adapter = loopback;
return true;
}
}
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