🎉Implemented networking🎉

include/net/ipv4.hpp

@@ -0,0 +1,115 @@
+#ifndef __FENNIX_KERNEL_IPv4_H__
+#define __FENNIX_KERNEL_IPv4_H__
+
+#include <net/ipv4.hpp>
+#include <net/arp.hpp>
+#include <net/nc.hpp>
+#include <types.h>
+
+namespace NetworkIPv4
+{
+    struct IPv4Header
+    {
+        uint8_t IHL : 4;
+        uint8_t Version : 4;
+        uint8_t TypeOfService;
+        uint16_t TotalLength;
+        uint16_t Identification;
+        uint16_t FlagsAndFragmentOffset;
+        uint8_t TimeToLive;
+        uint8_t Protocol;
+        uint16_t HeaderChecksum;
+        uint32_t SourceIP;
+        uint32_t DestinationIP;
+
+        /* On wikipedia page we have this: https://en.wikipedia.org/wiki/File:IPv4_Packet-en.svg
+           but only the code above works... */
+        // uint8_t Version : 4;
+        // uint8_t IHL : 4;
+        // uint16_t TypeOfService : 8;
+        // uint16_t TotalLength : 12;
+        // uint16_t Identification : 16;
+        // uint16_t Flags : 3;
+        // uint16_t FragmentOffset : 13;
+        // uint8_t TimeToLive : 8;
+        // uint8_t Protocol : 8;
+        // uint16_t HeaderChecksum;
+        // uint32_t SourceIP;
+        // uint32_t DestinationIP;
+    };
+
+    struct IPv4Packet
+    {
+        IPv4Header Header;
+        uint8_t Data[];
+    };
+
+    enum IPv4Protocols
+    {
+        PROTOCOL_ICMP = 1,
+        PROTOCOL_IGMP = 2,
+        PROTOCOL_TCP = 6,
+        PROTOCOL_UDP = 17,
+        PROTOCOL_IPV6 = 41,
+        PROTOCOL_ROUTING = 43,
+        PROTOCOL_FRAGMENT = 44,
+        PROTOCOL_ESP = 50,
+        PROTOCOL_AH = 51,
+        PROTOCOL_ICMPV6 = 58,
+        PROTOCOL_NONE = 59,
+        PROTOCOL_DSTOPTS = 60,
+        PROTOCOL_ND = 77,
+        PROTOCOL_ICLFXBM = 78,
+        PROTOCOL_PIM = 103,
+        PROTOCOL_COMP = 108,
+        PROTOCOL_SCTP = 132,
+        PROTOCOL_UDPLITE = 136,
+        PROTOCOL_RAW = 255
+    };
+
+    class IPv4 : public NetworkEthernet::EthernetEvents
+    {
+    private:
+        NetworkARP::ARP *ARP;
+        NetworkEthernet::Ethernet *Ethernet;
+
+        virtual bool OnEthernetPacketReceived(uint8_t *Data, uint64_t Length);
+
+    public:
+        InternetProtocol4 GatewayIP = {.Address = {0xFF, 0xFF, 0xFF, 0xFF}};
+        InternetProtocol4 SubNetworkMaskIP = {.Address = {0xFF, 0xFF, 0xFF, 0xFF}};
+        IPv4(NetworkARP::ARP *ARP, NetworkEthernet::Ethernet *Ethernet);
+        ~IPv4();
+
+        /**
+         * @brief Send an IPv4 packet.
+         *
+         * @param Data The data to send.
+         * @param Length The length of the data.
+         * @param Protocol The protocol of the packet.
+         * @param DestinationIP The IP address of the destination. (Big-endian)
+         */
+        void Send(uint8_t *Data, uint64_t Length, uint8_t Protocol, InternetProtocol4 DestinationIP);
+    };
+
+    class IPv4Events
+    {
+    private:
+        uint8_t Protocol;
+
+    protected:
+        IPv4Events(IPv4Protocols Protocol);
+        ~IPv4Events();
+
+    public:
+        uint8_t GetProtocol() { return Protocol; }
+
+        virtual bool OnIPv4PacketReceived(InternetProtocol4 SourceIP, InternetProtocol4 DestinationIP, uint8_t *Data, uint64_t Length)
+        {
+            warn("Not implemented.");
+            return false;
+        }
+    };
+}
+
+#endif // !__FENNIX_KERNEL_IPv4_H__