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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/IPv4Address.h>
#include <AK/RefPtr.h>
#include <Kernel/Locking/MutexProtected.h>
#include <Kernel/Net/NetworkAdapter.h>
#include <Kernel/Tasks/Thread.h>
namespace Kernel {
struct Route final : public AtomicRefCounted<Route> {
Route(IPv4Address const& destination, IPv4Address const& gateway, IPv4Address const& netmask, u16 flags, NonnullRefPtr<NetworkAdapter> adapter)
: destination(destination)
, gateway(gateway)
, netmask(netmask)
, flags(flags)
, adapter(adapter)
{
}
bool operator==(Route const& other) const
{
return destination == other.destination && netmask == other.netmask && flags == other.flags && adapter.ptr() == other.adapter.ptr();
}
bool matches(Route const& other) const
{
return destination == other.destination && (gateway == other.gateway || other.gateway.is_zero()) && netmask == other.netmask && flags == other.flags && adapter.ptr() == other.adapter.ptr();
}
const IPv4Address destination;
const IPv4Address gateway;
const IPv4Address netmask;
const u16 flags;
NonnullRefPtr<NetworkAdapter> const adapter;
IntrusiveListNode<Route, RefPtr<Route>> route_list_node {};
using RouteList = IntrusiveList<&Route::route_list_node>;
};
struct RoutingDecision {
RefPtr<NetworkAdapter> adapter;
MACAddress next_hop;
bool is_zero() const;
};
enum class UpdateTable {
Set,
Delete,
};
void update_arp_table(IPv4Address const&, MACAddress const&, UpdateTable update);
ErrorOr<void> update_routing_table(IPv4Address const& destination, IPv4Address const& gateway, IPv4Address const& netmask, u16 flags, RefPtr<NetworkAdapter> const adapter, UpdateTable update);
enum class AllowUsingGateway {
Yes,
No,
};
RoutingDecision route_to(IPv4Address const& target, IPv4Address const& source, RefPtr<NetworkAdapter> const through = nullptr, AllowUsingGateway = AllowUsingGateway::Yes);
SpinlockProtected<HashMap<IPv4Address, MACAddress>, LockRank::None>& arp_table();
SpinlockProtected<Route::RouteList, LockRank::None>& routing_table();
}
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