Kernel: Make better abstractions for networking

kernel/include/kernel/Networking/NetworkSocket.h

@@ -3,6 +3,7 @@
 #include <BAN/WeakPtr.h>
 #include <kernel/FS/TmpFS/Inode.h>
 #include <kernel/Networking/NetworkInterface.h>
+#include <kernel/Networking/NetworkLayer.h>
 
 #include <netinet/in.h>
 
@@ -11,9 +12,24 @@ namespace Kernel
 
 	enum NetworkProtocol : uint8_t
 	{
+		ICMP = 0x01,
 		UDP = 0x11,
 	};
 
+	enum class SocketDomain
+	{
+		INET,
+		INET6,
+		UNIX,
+	};
+
+	enum class SocketType
+	{
+		STREAM,
+		DGRAM,
+		SEQPACKET,
+	};
+
 	class NetworkSocket : public TmpInode, public BAN::Weakable<NetworkSocket>
 	{
 		BAN_NON_COPYABLE(NetworkSocket);
@@ -26,14 +42,16 @@ namespace Kernel
 		void bind_interface_and_port(NetworkInterface*, uint16_t port);
 		~NetworkSocket();
 
+		NetworkInterface& interface() { ASSERT(m_interface); return *m_interface; }
+
 		virtual size_t protocol_header_size() const = 0;
-		virtual void add_protocol_header(BAN::ByteSpan packet, uint16_t src_port, uint16_t dst_port) = 0;
+		virtual void add_protocol_header(BAN::ByteSpan packet, uint16_t dst_port) = 0;
 		virtual NetworkProtocol protocol() const = 0;
 
 		virtual void add_packet(BAN::ConstByteSpan, BAN::IPv4Address sender_address, uint16_t sender_port) = 0;
 
 	protected:
-		NetworkSocket(mode_t mode, uid_t uid, gid_t gid);
+		NetworkSocket(NetworkLayer&, ino_t, const TmpInodeInfo&);
 
 		virtual BAN::ErrorOr<size_t> read_packet(BAN::ByteSpan, sockaddr_in* sender_address) = 0;
 
@@ -46,6 +64,7 @@ namespace Kernel
 		virtual BAN::ErrorOr<long> ioctl_impl(int request, void* arg) override;
 
 	protected:
+		NetworkLayer&		m_network_layer;
 		NetworkInterface*	m_interface	= nullptr;
 		uint16_t			m_port		= PORT_NONE;
 	};