mirror of
https://github.com/SerenityOS/serenity
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79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
121 lines
4 KiB
C++
121 lines
4 KiB
C++
/*
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Singleton.h>
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#include <Kernel/Arch/x86/IO.h>
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#include <Kernel/Bus/PCI/API.h>
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#include <Kernel/CommandLine.h>
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#include <Kernel/KString.h>
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#include <Kernel/Memory/AnonymousVMObject.h>
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#include <Kernel/Multiboot.h>
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#include <Kernel/Net/E1000ENetworkAdapter.h>
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#include <Kernel/Net/E1000NetworkAdapter.h>
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#include <Kernel/Net/LoopbackAdapter.h>
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#include <Kernel/Net/NE2000NetworkAdapter.h>
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#include <Kernel/Net/NetworkingManagement.h>
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#include <Kernel/Net/RTL8139NetworkAdapter.h>
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#include <Kernel/Net/RTL8168NetworkAdapter.h>
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#include <Kernel/Sections.h>
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namespace Kernel {
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static Singleton<NetworkingManagement> s_the;
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NetworkingManagement& NetworkingManagement::the()
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{
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return *s_the;
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}
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bool NetworkingManagement::is_initialized()
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{
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return s_the.is_initialized();
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}
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UNMAP_AFTER_INIT NetworkingManagement::NetworkingManagement()
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{
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}
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NonnullRefPtr<NetworkAdapter> NetworkingManagement::loopback_adapter() const
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{
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return *m_loopback_adapter;
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}
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void NetworkingManagement::for_each(Function<void(NetworkAdapter&)> callback)
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{
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MutexLocker locker(m_lock);
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for (auto& it : m_adapters)
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callback(it);
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}
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RefPtr<NetworkAdapter> NetworkingManagement::from_ipv4_address(const IPv4Address& address) const
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{
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MutexLocker locker(m_lock);
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for (auto& adapter : m_adapters) {
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if (adapter.ipv4_address() == address || adapter.ipv4_broadcast() == address)
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return adapter;
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}
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if (address[0] == 0 && address[1] == 0 && address[2] == 0 && address[3] == 0)
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return m_loopback_adapter;
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if (address[0] == 127)
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return m_loopback_adapter;
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return {};
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}
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RefPtr<NetworkAdapter> NetworkingManagement::lookup_by_name(const StringView& name) const
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{
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MutexLocker locker(m_lock);
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RefPtr<NetworkAdapter> found_adapter;
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for (auto& it : m_adapters) {
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if (it.name() == name)
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found_adapter = it;
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}
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return found_adapter;
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}
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ErrorOr<NonnullOwnPtr<KString>> NetworkingManagement::generate_interface_name_from_pci_address(PCI::DeviceIdentifier const& device_identifier)
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{
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VERIFY(device_identifier.class_code().value() == 0x2);
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// Note: This stands for e - "Ethernet", p - "Port" as for PCI bus, "s" for slot as for PCI slot
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auto name = String::formatted("ep{}s{}", device_identifier.address().bus(), device_identifier.address().device());
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VERIFY(!NetworkingManagement::the().lookup_by_name(name));
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// TODO: We need some way to to format data into a `KString`.
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return KString::try_create(name.view());
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}
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UNMAP_AFTER_INIT RefPtr<NetworkAdapter> NetworkingManagement::determine_network_device(PCI::DeviceIdentifier const& device_identifier) const
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{
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if (auto candidate = E1000NetworkAdapter::try_to_initialize(device_identifier); !candidate.is_null())
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return candidate;
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if (auto candidate = E1000ENetworkAdapter::try_to_initialize(device_identifier); !candidate.is_null())
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return candidate;
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if (auto candidate = RTL8139NetworkAdapter::try_to_initialize(device_identifier); !candidate.is_null())
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return candidate;
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if (auto candidate = RTL8168NetworkAdapter::try_to_initialize(device_identifier); !candidate.is_null())
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return candidate;
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if (auto candidate = NE2000NetworkAdapter::try_to_initialize(device_identifier); !candidate.is_null())
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return candidate;
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return {};
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}
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bool NetworkingManagement::initialize()
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{
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if (!kernel_command_line().is_physical_networking_disabled()) {
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PCI::enumerate([&](PCI::DeviceIdentifier const& device_identifier) {
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// Note: PCI class 2 is the class of Network devices
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if (device_identifier.class_code().value() != 0x02)
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return;
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if (auto adapter = determine_network_device(device_identifier); !adapter.is_null())
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m_adapters.append(adapter.release_nonnull());
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});
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}
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auto loopback = LoopbackAdapter::try_create();
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VERIFY(loopback);
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m_adapters.append(*loopback);
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m_loopback_adapter = loopback;
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return true;
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}
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}
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