add lwIP TCP/IP stack as a runtime driver, native socket syscalls, SysGetMemoryStatus replacing CatchAllDebugBucket, fix timeGetTime to return milliseconds, fix SysSleep to interpret argument as milliseconds, SysGetTick now returns microseconds, harden all syscalls against bad user pointers with CopyFromUser/CopyToUser/MmProbeUser throughout, add networking test apps, port-forward 8080 in runa.bat, split LWIP_DRIVER_CFLAGS, add settings.ini to deploy, remove ethernet.c stub

code/kernel/net_socket.h

@@ -0,0 +1,39 @@
+#pragma once
+// net_socket.h - process-owned, provider-neutral kernel socket objects.
+//
+// The native networking ABI lives in net_abi.h. Protocol implementation lives
+// in a network stack driver registered through net_stack.h.
+
+#include <stdint.h>
+#include <stddef.h>
+#include <ke_status.h>
+#include <ob_object.h>
+#include <net_abi.h>
+
+struct NET_STACK_PROVIDER;
+
+typedef struct SOCKET_OBJECT {
+    OBJECT Header;         // must be first
+
+    const struct NET_STACK_PROVIDER* Provider;
+    void* ProviderSocket;
+
+    uint32_t Domain;
+    uint32_t Type;
+    uint32_t Protocol;
+} SOCKET_OBJECT;
+
+KSTATUS NetSocketCreate(uint32_t domain, uint32_t type, uint32_t protocol, SOCKET_OBJECT** out);
+KSTATUS NetSocketBind(SOCKET_OBJECT* socket, const SYS_SOCKET_ADDRESS_IPV4_K* address, size_t addressSize);
+KSTATUS NetSocketListen(SOCKET_OBJECT* socket, uint32_t backlog);
+KSTATUS NetSocketAccept(SOCKET_OBJECT* socket, SOCKET_OBJECT** acceptedOut, SYS_SOCKET_ADDRESS_IPV4_K* remoteOut);
+KSTATUS NetSocketConnect(SOCKET_OBJECT* socket, const SYS_SOCKET_ADDRESS_IPV4_K* address, size_t addressSize);
+KSTATUS NetSocketSend(SOCKET_OBJECT* socket, const void* buffer, size_t length, uint32_t flags, size_t* sentOut);
+KSTATUS NetSocketReceive(SOCKET_OBJECT* socket, void* buffer, size_t length, uint32_t flags, size_t* receivedOut);
+KSTATUS NetSocketSendTo(SOCKET_OBJECT* socket, const void* buffer, size_t length, uint32_t flags, const SYS_SOCKET_ADDRESS_IPV4_K* remote, size_t remoteSize, size_t* sentOut);
+KSTATUS NetSocketReceiveFrom(SOCKET_OBJECT* socket, void* buffer, size_t length, uint32_t flags, SYS_SOCKET_ADDRESS_IPV4_K* remoteOut, size_t* receivedOut);
+KSTATUS NetSocketShutdown(SOCKET_OBJECT* socket, uint32_t how);
+KSTATUS NetSocketSetOption(SOCKET_OBJECT* socket, uint32_t option, const void* value, size_t valueSize);
+KSTATUS NetSocketGetOption(SOCKET_OBJECT* socket, uint32_t option, void* value, size_t valueSize, size_t* actualSizeOut);
+KSTATUS NetSocketPoll(SOCKET_OBJECT* socket, uint32_t events, uint32_t* returnedEventsOut);
+KSTATUS NetResolveHostIpv4(const char* name, SYS_SOCKET_ADDRESS_IPV4_K* addressOut);