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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteBuffer.h>
#include <AK/Function.h>
#include <AK/MACAddress.h>
#include <AK/SinglyLinkedList.h>
#include <AK/Types.h>
#include <AK/WeakPtr.h>
#include <AK/Weakable.h>
#include <Kernel/KBuffer.h>
#include <Kernel/Net/ARP.h>
#include <Kernel/Net/ICMP.h>
#include <Kernel/Net/IPv4.h>
#include <Kernel/UserOrKernelBuffer.h>
namespace Kernel {
class NetworkAdapter;
class NetworkAdapter : public RefCounted<NetworkAdapter> {
public:
template<typename Callback>
static inline void for_each(Callback callback)
{
Locker locker(all_adapters().lock());
for (auto& it : all_adapters().resource())
callback(*it);
}
static RefPtr<NetworkAdapter> from_ipv4_address(const IPv4Address&);
static RefPtr<NetworkAdapter> lookup_by_name(const StringView&);
virtual ~NetworkAdapter();
virtual const char* class_name() const = 0;
const String& name() const { return m_name; }
MACAddress mac_address() { return m_mac_address; }
IPv4Address ipv4_address() const { return m_ipv4_address; }
IPv4Address ipv4_netmask() const { return m_ipv4_netmask; }
IPv4Address ipv4_broadcast() const { return IPv4Address { (m_ipv4_address.to_u32() & m_ipv4_netmask.to_u32()) | ~m_ipv4_netmask.to_u32() }; }
IPv4Address ipv4_gateway() const { return m_ipv4_gateway; }
virtual bool link_up() { return false; }
void set_ipv4_address(const IPv4Address&);
void set_ipv4_netmask(const IPv4Address&);
void set_ipv4_gateway(const IPv4Address&);
void send(const MACAddress&, const ARPPacket&);
KResult send_ipv4(const IPv4Address& source_ipv4, const MACAddress&, const IPv4Address&, IPv4Protocol, const UserOrKernelBuffer& payload, size_t payload_size, u8 ttl);
KResult send_ipv4_fragmented(const IPv4Address& source_ipv4, const MACAddress&, const IPv4Address&, IPv4Protocol, const UserOrKernelBuffer& payload, size_t payload_size, u8 ttl);
size_t dequeue_packet(u8* buffer, size_t buffer_size, Time& packet_timestamp);
bool has_queued_packets() const { return !m_packet_queue.is_empty(); }
u32 mtu() const { return m_mtu; }
void set_mtu(u32 mtu) { m_mtu = mtu; }
u32 packets_in() const { return m_packets_in; }
u32 bytes_in() const { return m_bytes_in; }
u32 packets_out() const { return m_packets_out; }
u32 bytes_out() const { return m_bytes_out; }
Function<void()> on_receive;
protected:
NetworkAdapter();
void set_interface_name(const StringView& basename);
void set_mac_address(const MACAddress& mac_address) { m_mac_address = mac_address; }
virtual void send_raw(ReadonlyBytes) = 0;
void did_receive(ReadonlyBytes);
private:
static Lockable<HashTable<NetworkAdapter*>>& all_adapters();
MACAddress m_mac_address;
IPv4Address m_ipv4_address;
IPv4Address m_ipv4_netmask;
IPv4Address m_ipv4_gateway;
struct PacketWithTimestamp {
KBuffer packet;
Time timestamp;
};
// FIXME: Make this configurable
static constexpr size_t max_packet_buffers = 1024;
SinglyLinkedList<PacketWithTimestamp> m_packet_queue;
size_t m_packet_queue_size { 0 };
SinglyLinkedList<KBuffer> m_unused_packet_buffers;
size_t m_unused_packet_buffers_count { 0 };
String m_name;
u32 m_packets_in { 0 };
u32 m_bytes_in { 0 };
u32 m_packets_out { 0 };
u32 m_bytes_out { 0 };
u32 m_mtu { 1500 };
};
}
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