feat: e100e Ethernet driver, ramdisk reorganization, shell rewrite, web server/client, and more

kernel/src/Net/Socket.hpp

@@ -1,6 +1,6 @@
 /*
     * Socket.hpp
-    * Socket descriptor table for userspace TCP access
+    * Socket descriptor table for userspace TCP/UDP access
     * Copyright (c) 2025 Daniel Hammer
 */
 
@@ -14,11 +14,14 @@ namespace Net::Socket {
     static constexpr int SOCK_UDP = 2;
     static constexpr int MAX_SOCKETS = 64;
 
+    struct UdpSocketState;
+
     struct SocketEntry {
         bool     Active;
         int      Type;
         int      OwnerPid;
         Tcp::Connection* TcpConn;
+        UdpSocketState*  UdpState;
         uint16_t LocalPort;
     };
 
@@ -45,6 +48,14 @@ namespace Net::Socket {
     // Receive data from a connected socket. Returns bytes received, 0 on close, or -1.
     int Recv(int fd, uint8_t* buf, uint32_t maxLen, int pid);
 
+    // Send a UDP datagram to a specific destination. Returns bytes sent or -1.
+    int SendTo(int fd, const uint8_t* data, uint32_t len,
+               uint32_t destIp, uint16_t destPort, int pid);
+
+    // Receive a UDP datagram, returning source info. Returns bytes received or -1.
+    int RecvFrom(int fd, uint8_t* buf, uint32_t maxLen,
+                 uint32_t* srcIp, uint16_t* srcPort, int pid);
+
     // Close a socket.
     void Close(int fd, int pid);