ladybird/Kernel/Net/NetworkAdapter.h
Andreas Kling 75ed262fe5 Kernel+ifconfig: Add an MTU value to NetworkAdapter
This defaults to 1500 for all adapters, but LoopbackAdapter increases
it to 65536 on construction.

If an IPv4 packet is larger than the MTU, we'll need to break it into
smaller fragments before transmitting it. This part is a FIXME. :^)
2019-11-28 14:14:26 +01:00

74 lines
2.3 KiB
C++

#pragma once
#include <AK/ByteBuffer.h>
#include <AK/Function.h>
#include <AK/SinglyLinkedList.h>
#include <AK/Types.h>
#include <AK/Weakable.h>
#include <AK/WeakPtr.h>
#include <Kernel/KBuffer.h>
#include <Kernel/Net/ARP.h>
#include <Kernel/Net/ICMP.h>
#include <Kernel/Net/IPv4.h>
#include <Kernel/Net/MACAddress.h>
class NetworkAdapter;
class NetworkAdapter : public Weakable<NetworkAdapter> {
public:
static void for_each(Function<void(NetworkAdapter&)>);
static WeakPtr<NetworkAdapter> from_ipv4_address(const IPv4Address&);
static WeakPtr<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_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&);
void send_ipv4(const MACAddress&, const IPv4Address&, IPv4Protocol, const u8* payload, size_t payload_size, u8 ttl);
Optional<KBuffer> dequeue_packet();
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(const u8*, int) = 0;
void did_receive(const u8*, int);
private:
MACAddress m_mac_address;
IPv4Address m_ipv4_address;
IPv4Address m_ipv4_netmask;
IPv4Address m_ipv4_gateway;
SinglyLinkedList<KBuffer> m_packet_queue;
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 };
};