Kernel: Implement barebones arp table

kernel/include/kernel/Networking/ARPTable.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <BAN/HashMap.h>
+#include <BAN/IPv4.h>
+#include <BAN/MAC.h>
+#include <BAN/UniqPtr.h>
+
+namespace Kernel
+{
+
+	class ARPTable
+	{
+		BAN_NON_COPYABLE(ARPTable);
+		BAN_NON_MOVABLE(ARPTable);
+
+	public:
+		static BAN::ErrorOr<BAN::UniqPtr<ARPTable>> create();
+
+		BAN::ErrorOr<BAN::MACAddress> get_mac_from_ipv4(BAN::IPv4Address);
+
+	private:
+		ARPTable();
+
+	private:
+		BAN::HashMap<BAN::IPv4Address, BAN::MACAddress> m_arp_table;
+
+		friend class BAN::UniqPtr<ARPTable>;
+	};
+
+}

kernel/include/kernel/Networking/NetworkManager.h

@@ -2,6 +2,7 @@
 
 #include <BAN/Vector.h>
 #include <kernel/FS/TmpFS/FileSystem.h>
+#include <kernel/Networking/ARPTable.h>
 #include <kernel/Networking/NetworkInterface.h>
 #include <kernel/Networking/NetworkSocket.h>
 #include <kernel/PCI.h>
@@ -13,6 +14,9 @@ namespace Kernel
 
 	class NetworkManager : public TmpFileSystem
 	{
+		BAN_NON_COPYABLE(NetworkManager);
+		BAN_NON_MOVABLE(NetworkManager);
+
 	public:
 		enum class SocketType
 		{
@@ -25,6 +29,8 @@ namespace Kernel
 		static BAN::ErrorOr<void> initialize();
 		static NetworkManager& get();
 
+		ARPTable& arp_table() { return *m_arp_table; }
+
 		BAN::ErrorOr<void> add_interface(PCI::Device& pci_device);
 
 		void unbind_socket(uint16_t port, BAN::RefPtr<NetworkSocket>);
@@ -38,6 +44,7 @@ namespace Kernel
 		NetworkManager();
 
 	private:
+		BAN::UniqPtr<ARPTable>							m_arp_table;
 		BAN::Vector<BAN::RefPtr<NetworkInterface>>		m_interfaces;
 		BAN::HashMap<int, BAN::WeakPtr<NetworkSocket>>	m_bound_sockets;
 	};

kernel/include/kernel/Networking/NetworkSocket.h

@@ -11,6 +11,9 @@ namespace Kernel
 
 	class NetworkSocket : public TmpInode, public BAN::Weakable<NetworkSocket>
 	{
+		BAN_NON_COPYABLE(NetworkSocket);
+		BAN_NON_MOVABLE(NetworkSocket);
+
 	public:
 		static constexpr uint16_t PORT_NONE = 0;