[bsp][simulator]delete tap_netif.c

bsp/simulator/drivers/SConscript

@@ -26,10 +26,8 @@ if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_DFS_WINSHAREDIR') =
     SrcRemove(src, 'dfs_win32.c')
 if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_MODULE') == False:
     SrcRemove(src, ['module_win32.c'])
-if GetDepend('RT_USING_TAPNETIF') == False:
-    SrcRemove(src, ['tap_netif.c'])
 if sys.platform[0:5]=="linux": #check whether under linux
-    SrcRemove(src, ['module_win32.c', 'dfs_win32.c', 'tap_netif.c'])
+    SrcRemove(src, ['module_win32.c', 'dfs_win32.c'])
 
 group = DefineGroup('Drivers', src, depend = [''],
                     CPPPATH = CPPPATH, LIBS=LIBS, LIBPATH=LIBPATH)

bsp/simulator/drivers/tap_netif.c

@@ -1,791 +0,0 @@
-/*
- *  TAP-Win32 -- A kernel driver to provide virtual tap device functionality
- *               on Windows.  Originally derived from the CIPE-Win32
- *               project by Damion K. Wilson, with extensive modifications by
- *               James Yonan.
- *
- *  All source code which derives from the CIPE-Win32 project is
- *  Copyright (C) Damion K. Wilson, 2003, and is released under the
- *  GPL version 2 (see below).
- *
- *  All other source code is Copyright (C) James Yonan, 2003-2004,
- *  and is released under the GPL version 2 (see below).
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program (see the file COPYING included with this
- *  distribution); if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdio.h>
-#include <windows.h>
-#include <winioctl.h>
-#include <rtthread.h>
-#include <netif/ethernetif.h>
-
-#define MAX_ADDR_LEN 6
-#define TAP_IFNAME  "RT-net"
-
-//=============
-// TAP IOCTLs
-//=============
-
-#define TAP_CONTROL_CODE(request,method) \
-  CTL_CODE (FILE_DEVICE_UNKNOWN, request, method, FILE_ANY_ACCESS)
-
-#define TAP_IOCTL_GET_MAC               TAP_CONTROL_CODE (1, METHOD_BUFFERED)
-#define TAP_IOCTL_GET_VERSION           TAP_CONTROL_CODE (2, METHOD_BUFFERED)
-#define TAP_IOCTL_GET_MTU               TAP_CONTROL_CODE (3, METHOD_BUFFERED)
-#define TAP_IOCTL_GET_INFO              TAP_CONTROL_CODE (4, METHOD_BUFFERED)
-#define TAP_IOCTL_CONFIG_POINT_TO_POINT TAP_CONTROL_CODE (5, METHOD_BUFFERED)
-#define TAP_IOCTL_SET_MEDIA_STATUS      TAP_CONTROL_CODE (6, METHOD_BUFFERED)
-#define TAP_IOCTL_CONFIG_DHCP_MASQ      TAP_CONTROL_CODE (7, METHOD_BUFFERED)
-#define TAP_IOCTL_GET_LOG_LINE          TAP_CONTROL_CODE (8, METHOD_BUFFERED)
-#define TAP_IOCTL_CONFIG_DHCP_SET_OPT   TAP_CONTROL_CODE (9, METHOD_BUFFERED)
-
-//=================
-// Registry keys
-//=================
-
-#define ADAPTER_KEY "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}"
-
-#define NETWORK_CONNECTIONS_KEY "SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}"
-
-//======================
-// Filesystem prefixes
-//======================
-
-#define USERMODEDEVICEDIR "\\\\.\\Global\\"
-#define TAPSUFFIX         ".tap"
-
-//======================
-// Compile time configuration
-//======================
-
-//#define DEBUG_TAP_WIN32
-
-#define TUN_ASYNCHRONOUS_WRITES 1
-
-#define TUN_BUFFER_SIZE 1560
-#define TUN_MAX_BUFFER_COUNT 32
-
-/*
- * The data member "buffer" must be the first element in the tun_buffer
- * structure. See the function, tap_win32_free_buffer.
- */
-typedef struct tun_buffer_s {
-    unsigned char buffer [TUN_BUFFER_SIZE];
-    unsigned long read_size;
-    struct tun_buffer_s* next;
-} tun_buffer_t;
-
-typedef struct tap_win32_overlapped {
-    HANDLE handle;
-    HANDLE read_event;
-    HANDLE write_event;
-    HANDLE output_queue_semaphore;
-    HANDLE free_list_semaphore;
-    HANDLE tap_semaphore;
-    CRITICAL_SECTION output_queue_cs;
-    CRITICAL_SECTION free_list_cs;
-    OVERLAPPED read_overlapped;
-    OVERLAPPED write_overlapped;
-    tun_buffer_t buffers[TUN_MAX_BUFFER_COUNT];
-    tun_buffer_t* free_list;
-    tun_buffer_t* output_queue_front;
-    tun_buffer_t* output_queue_back;
-} tap_win32_overlapped_t;
-
-static tap_win32_overlapped_t tap_overlapped;
-
-/************************************************************************/
-/* RT-Thread Network Interface                                          */
-/************************************************************************/
-struct tap_netif
-{
-    /* inherit from ethernet device */
-    struct eth_device parent;
-
-    tap_win32_overlapped_t *handle;
-
-    /* interface address info. */
-    rt_uint8_t  dev_addr[MAX_ADDR_LEN];     /* hw address   */
-};
-#define NETIF_DEVICE(netif) ((struct tap_netif*)(netif))
-#define NETIF_TAP(netif)   (NETIF_DEVICE(netif)->handle)
-
-static struct tap_netif tap_netif_device;
-static struct rt_semaphore sem_lock;
-
-static tun_buffer_t* get_buffer_from_free_list(tap_win32_overlapped_t* const overlapped)
-{
-    tun_buffer_t* buffer = NULL;
-    WaitForSingleObject(overlapped->free_list_semaphore, INFINITE);
-    EnterCriticalSection(&overlapped->free_list_cs);
-    buffer = overlapped->free_list;
-    overlapped->free_list = buffer->next;
-    LeaveCriticalSection(&overlapped->free_list_cs);
-    buffer->next = NULL;
-    return buffer;
-}
-
-static void put_buffer_on_free_list(tap_win32_overlapped_t* const overlapped, tun_buffer_t* const buffer)
-{
-    EnterCriticalSection(&overlapped->free_list_cs);
-    buffer->next = overlapped->free_list;
-    overlapped->free_list = buffer;
-    LeaveCriticalSection(&overlapped->free_list_cs);
-    ReleaseSemaphore(overlapped->free_list_semaphore, 1, NULL);
-}
-
-static tun_buffer_t* get_buffer_from_output_queue(tap_win32_overlapped_t* const overlapped, const int block)
-{
-    tun_buffer_t* buffer = NULL;
-    DWORD result, timeout = block ? INFINITE : 0L;
-
-    // Non-blocking call
-    result = WaitForSingleObject(overlapped->output_queue_semaphore, timeout);
-
-    switch (result)
-    {
-        // The semaphore object was signaled.
-        case WAIT_OBJECT_0:
-            EnterCriticalSection(&overlapped->output_queue_cs);
-
-            buffer = overlapped->output_queue_front;
-            overlapped->output_queue_front = buffer->next;
-
-            if(overlapped->output_queue_front == NULL) {
-                overlapped->output_queue_back = NULL;
-            }
-
-            LeaveCriticalSection(&overlapped->output_queue_cs);
-            break;
-
-        // Semaphore was nonsignaled, so a time-out occurred.
-        case WAIT_TIMEOUT:
-            // Cannot open another window.
-            break;
-    }
-
-    return buffer;
-}
-
-static tun_buffer_t* get_buffer_from_output_queue_immediate (tap_win32_overlapped_t* const overlapped)
-{
-    return get_buffer_from_output_queue(overlapped, 0);
-}
-
-static void put_buffer_on_output_queue(tap_win32_overlapped_t* const overlapped, tun_buffer_t* const buffer)
-{
-    EnterCriticalSection(&overlapped->output_queue_cs);
-
-    if(overlapped->output_queue_front == NULL && overlapped->output_queue_back == NULL) {
-        overlapped->output_queue_front = overlapped->output_queue_back = buffer;
-    } else {
-        buffer->next = NULL;
-        overlapped->output_queue_back->next = buffer;
-        overlapped->output_queue_back = buffer;
-    }
-
-    LeaveCriticalSection(&overlapped->output_queue_cs);
-
-    ReleaseSemaphore(overlapped->output_queue_semaphore, 1, NULL);
-}
-
-
-static int is_tap_win32_dev(const char *guid)
-{
-    HKEY netcard_key;
-    LONG status;
-    DWORD len;
-    int i = 0;
-
-    status = RegOpenKeyEx(
-        HKEY_LOCAL_MACHINE,
-        ADAPTER_KEY,
-        0,
-        KEY_READ,
-        &netcard_key);
-
-    if (status != ERROR_SUCCESS) {
-        return FALSE;
-    }
-
-    for (;;) {
-        char enum_name[256];
-        char unit_string[256];
-        HKEY unit_key;
-        char component_id_string[] = "ComponentId";
-        char component_id[256];
-        char net_cfg_instance_id_string[] = "NetCfgInstanceId";
-        char net_cfg_instance_id[256];
-        DWORD data_type;
-
-        len = sizeof (enum_name);
-        status = RegEnumKeyEx(
-            netcard_key,
-            i,
-            enum_name,
-            &len,
-            NULL,
-            NULL,
-            NULL,
-            NULL);
-
-        if (status == ERROR_NO_MORE_ITEMS)
-            break;
-        else if (status != ERROR_SUCCESS) {
-            return FALSE;
-        }
-
-        rt_snprintf (unit_string, sizeof(unit_string), "%s\\%s",
-                  ADAPTER_KEY, enum_name);
-
-        status = RegOpenKeyEx(
-            HKEY_LOCAL_MACHINE,
-            unit_string,
-            0,
-            KEY_READ,
-            &unit_key);
-
-        if (status != ERROR_SUCCESS) {
-            return FALSE;
-        } else {
-            len = sizeof (component_id);
-            status = RegQueryValueEx(
-                unit_key,
-                component_id_string,
-                NULL,
-                &data_type,
-                (LPBYTE)component_id,
-                &len);
-
-            if (!(status != ERROR_SUCCESS || data_type != REG_SZ)) {
-                len = sizeof (net_cfg_instance_id);
-                status = RegQueryValueEx(
-                    unit_key,
-                    net_cfg_instance_id_string,
-                    NULL,
-                    &data_type,
-                    (LPBYTE)net_cfg_instance_id,
-                    &len);
-
-                if (status == ERROR_SUCCESS && data_type == REG_SZ) {
-                    if (/* !strcmp (component_id, TAP_COMPONENT_ID) &&*/
-                        !strcmp (net_cfg_instance_id, guid)) {
-                        RegCloseKey (unit_key);
-                        RegCloseKey (netcard_key);
-                        return TRUE;
-                    }
-                }
-            }
-            RegCloseKey (unit_key);
-        }
-        ++i;
-    }
-
-    RegCloseKey (netcard_key);
-    return FALSE;
-}
-
-static int get_device_guid(
-    char *name,
-    int name_size,
-    char *actual_name,
-    int actual_name_size)
-{
-    LONG status;
-    HKEY control_net_key;
-    DWORD len;
-    int i = 0;
-    int stop = 0;
-
-    status = RegOpenKeyEx(
-        HKEY_LOCAL_MACHINE,
-        NETWORK_CONNECTIONS_KEY,
-        0,
-        KEY_READ,
-        &control_net_key);
-
-    if (status != ERROR_SUCCESS) {
-        return -1;
-    }
-
-    while (!stop)
-    {
-        char enum_name[256];
-        char connection_string[256];
-        HKEY connection_key;
-        char name_data[256];
-        DWORD name_type;
-        const char name_string[] = "Name";
-
-        len = sizeof (enum_name);
-        status = RegEnumKeyEx(
-            control_net_key,
-            i,
-            enum_name,
-            &len,
-            NULL,
-            NULL,
-            NULL,
-            NULL);
-
-        if (status == ERROR_NO_MORE_ITEMS)
-            break;
-        else if (status != ERROR_SUCCESS) {
-            return -1;
-        }
-
-        rt_snprintf(connection_string,
-             sizeof(connection_string),
-             "%s\\%s\\Connection",
-             NETWORK_CONNECTIONS_KEY, enum_name);
-
-        status = RegOpenKeyEx(
-            HKEY_LOCAL_MACHINE,
-            connection_string,
-            0,
-            KEY_READ,
-            &connection_key);
-
-        if (status == ERROR_SUCCESS) {
-            len = sizeof (name_data);
-            status = RegQueryValueEx(
-                connection_key,
-                name_string,
-                NULL,
-                &name_type,
-                (LPBYTE)name_data,
-                &len);
-
-            if (status != ERROR_SUCCESS || name_type != REG_SZ) {
-                    return -1;
-            }
-            else {
-                if (is_tap_win32_dev(enum_name)) {
-                    rt_snprintf(name, name_size, "%s", enum_name);
-                    if (actual_name) {
-                        if (strcmp(actual_name, "") != 0) {
-                            if (strcmp(name_data, actual_name) != 0) {
-                                RegCloseKey (connection_key);
-                                ++i;
-                                continue;
-                            }
-                        }
-                        else {
-                            rt_snprintf(actual_name, actual_name_size, "%s", name_data);
-                        }
-                    }
-                    stop = 1;
-                }
-            }
-
-            RegCloseKey (connection_key);
-        }
-        ++i;
-    }
-
-    RegCloseKey (control_net_key);
-
-    if (stop == 0)
-        return -1;
-
-    return 0;
-}
-
-static int tap_win32_set_status(HANDLE handle, int status)
-{
-    unsigned long len = 0;
-
-    return DeviceIoControl(handle, TAP_IOCTL_SET_MEDIA_STATUS,
-                &status, sizeof (status),
-                &status, sizeof (status), &len, NULL);
-}
-
-static void tap_win32_overlapped_init(tap_win32_overlapped_t* const overlapped, const HANDLE handle)
-{
-    overlapped->handle = handle;
-
-    overlapped->read_event = CreateEvent(NULL, FALSE, FALSE, NULL);
-    overlapped->write_event = CreateEvent(NULL, FALSE, FALSE, NULL);
-
-    overlapped->read_overlapped.Offset = 0;
-    overlapped->read_overlapped.OffsetHigh = 0;
-    overlapped->read_overlapped.hEvent = overlapped->read_event;
-
-    overlapped->write_overlapped.Offset = 0;
-    overlapped->write_overlapped.OffsetHigh = 0;
-    overlapped->write_overlapped.hEvent = overlapped->write_event;
-
-    InitializeCriticalSection(&overlapped->output_queue_cs);
-    InitializeCriticalSection(&overlapped->free_list_cs);
-
-    overlapped->output_queue_semaphore = CreateSemaphore(
-        NULL,   // default security attributes
-        0,   // initial count
-        TUN_MAX_BUFFER_COUNT,   // maximum count
-        NULL);  // unnamed semaphore
-
-    if(!overlapped->output_queue_semaphore)  {
-        fprintf(stderr, "error creating output queue semaphore!\n");
-    }
-
-    overlapped->free_list_semaphore = CreateSemaphore(
-        NULL,   // default security attributes
-        TUN_MAX_BUFFER_COUNT,   // initial count
-        TUN_MAX_BUFFER_COUNT,   // maximum count
-        NULL);  // unnamed semaphore
-
-    if(!overlapped->free_list_semaphore)  {
-        fprintf(stderr, "error creating free list semaphore!\n");
-    }
-
-    overlapped->free_list = overlapped->output_queue_front = overlapped->output_queue_back = NULL;
-
-    {
-        unsigned index;
-        for(index = 0; index < TUN_MAX_BUFFER_COUNT; index++) {
-            tun_buffer_t* element = &overlapped->buffers[index];
-            element->next = overlapped->free_list;
-            overlapped->free_list = element;
-        }
-    }
-    /* To count buffers, initially no-signal. */
-    overlapped->tap_semaphore = CreateSemaphore(NULL, 0, TUN_MAX_BUFFER_COUNT, NULL);
-    if(!overlapped->tap_semaphore)
-        fprintf(stderr, "error creating tap_semaphore.\n");
-}
-
-static int tap_win32_write(tap_win32_overlapped_t *overlapped,
-                           const void *buffer, unsigned long size)
-{
-    unsigned long write_size;
-    BOOL result;
-    DWORD error;
-
-    result = GetOverlappedResult( overlapped->handle, &overlapped->write_overlapped,
-                                  &write_size, FALSE);
-
-    if (!result && GetLastError() == ERROR_IO_INCOMPLETE)
-        WaitForSingleObject(overlapped->write_event, INFINITE);
-
-    result = WriteFile(overlapped->handle, buffer, size,
-                       &write_size, &overlapped->write_overlapped);
-
-    if (!result) {
-        switch (error = GetLastError())
-        {
-        case ERROR_IO_PENDING:
-#ifndef TUN_ASYNCHRONOUS_WRITES
-            WaitForSingleObject(overlapped->write_event, INFINITE);
-#endif
-            break;
-        default:
-            return -1;
-        }
-    }
-
-    return write_size;
-}
-
-static void tap_win32_thread_entry(void* param)
-{
-    tap_win32_overlapped_t *overlapped;
-    unsigned long read_size;
-    BOOL result;
-    DWORD dwError;
-    tun_buffer_t* buffer;
-    struct eth_device* eth;
-
-    eth = (struct eth_device*) &tap_netif_device;
-    overlapped = NETIF_TAP(&tap_netif_device);
-    buffer = get_buffer_from_free_list(overlapped);
-
-    for (;;) {
-        result = ReadFile(overlapped->handle,
-                          buffer->buffer,
-                          sizeof(buffer->buffer),
-                          &read_size,
-                          &overlapped->read_overlapped);
-        if (!result) {
-            dwError = GetLastError();
-            if (dwError == ERROR_IO_PENDING) {
-                WaitForSingleObject(overlapped->read_event, INFINITE);
-                result = GetOverlappedResult( overlapped->handle, &overlapped->read_overlapped,
-                                              &read_size, FALSE);
-                if (!result) {
-#ifdef DEBUG_TAP_WIN32
-                    LPVOID lpBuffer;
-                    dwError = GetLastError();
-                    FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
-                                   NULL, dwError, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-                                   (LPTSTR) & lpBuffer, 0, NULL );
-                    fprintf(stderr, "Tap-Win32: Error GetOverlappedResult %d - %s\n", dwError, lpBuffer);
-                    LocalFree( lpBuffer );
-#endif
-                }
-            } else {
-#ifdef DEBUG_TAP_WIN32
-                LPVOID lpBuffer;
-                FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
-                               NULL, dwError, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-                               (LPTSTR) & lpBuffer, 0, NULL );
-                fprintf(stderr, "Tap-Win32: Error ReadFile %d - %s\n", dwError, lpBuffer);
-                LocalFree( lpBuffer );
-#endif
-            }
-        }
-
-        if(read_size > 0) {
-            // rt_kprintf("rx packet, length=%d\n", read_size);
-
-            buffer->read_size = read_size;
-            put_buffer_on_output_queue(overlapped, buffer);
-
-            /* notify eth rx thread to receive packet */
-            eth_device_ready(eth);
-
-            buffer = get_buffer_from_free_list(overlapped);
-        }
-    }
-}
-
-static int tap_win32_read(tap_win32_overlapped_t *overlapped,
-                          rt_uint8_t **pbuf, int max_size)
-{
-    int size = 0;
-
-    tun_buffer_t* buffer = get_buffer_from_output_queue_immediate(overlapped);
-
-    if(buffer != NULL) {
-        *pbuf = buffer->buffer;
-        size = (int)buffer->read_size;
-        if(size > max_size) {
-            size = max_size;
-        }
-    }
-
-    return size;
-}
-
-static void tap_win32_free_buffer(tap_win32_overlapped_t *overlapped,
-                                  rt_uint8_t *pbuf)
-{
-    tun_buffer_t* buffer = (tun_buffer_t*)pbuf;
-    put_buffer_on_free_list(overlapped, buffer);
-}
-
-static int tap_win32_open(tap_win32_overlapped_t **phandle,
-                          const char *preferred_name)
-{
-    char device_path[256];
-    char device_guid[0x100];
-    int rc;
-    HANDLE handle;
-    BOOL bret;
-    char name_buffer[0x100] = {0, };
-    struct {
-        unsigned long major;
-        unsigned long minor;
-        unsigned long debug;
-    } version;
-    DWORD version_len;
-
-    if (preferred_name != NULL) {
-        rt_snprintf(name_buffer, sizeof(name_buffer), "%s", preferred_name);
-    }
-
-    rc = get_device_guid(device_guid, sizeof(device_guid), name_buffer, sizeof(name_buffer));
-    if (rc)
-        return -1;
-
-    rt_snprintf (device_path, sizeof(device_path), "%s%s%s",
-              USERMODEDEVICEDIR,
-              device_guid,
-              TAPSUFFIX);
-
-    handle = CreateFile (
-        device_path,
-        GENERIC_READ | GENERIC_WRITE,
-        0,
-        0,
-        OPEN_EXISTING,
-        FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED,
-        0 );
-
-    if (handle == INVALID_HANDLE_VALUE) {
-        return -1;
-    }
-
-    bret = DeviceIoControl(handle, TAP_IOCTL_GET_VERSION,
-                           &version, sizeof (version),
-                           &version, sizeof (version), &version_len, NULL);
-
-    if (bret == FALSE) {
-        CloseHandle(handle);
-        return -1;
-    }
-
-    if (!tap_win32_set_status(handle, TRUE)) {
-        return -1;
-    }
-
-    tap_win32_overlapped_init(&tap_overlapped, handle);
-
-    *phandle = &tap_overlapped;
-    return 0;
-}
-
-static rt_err_t tap_netif_init(rt_device_t dev)
-{
-    rt_thread_t tid;
-    tap_win32_overlapped_t *handle;
-
-    if (tap_win32_open(&handle, TAP_IFNAME) < 0) {
-        printf("tap: Could not open '%s'\n", TAP_IFNAME);
-        return -RT_ERROR;
-    }
-
-    tap_netif_device.handle = handle;
-
-    /* create recv thread */
-    tid = rt_thread_create("tap", tap_win32_thread_entry, RT_NULL,
-        2048, RT_THREAD_PRIORITY_MAX - 1, 10);
-    if (tid != RT_NULL)
-    {
-        rt_thread_startup(tid);
-    }
-
-    rt_thread_sleep(RT_TICK_PER_SECOND);
-
-    return RT_EOK;
-}
-
-static rt_err_t tap_netif_open(rt_device_t dev, rt_uint16_t oflag)
-{
-    return RT_EOK;
-}
-
-static rt_err_t tap_netif_close(rt_device_t dev)
-{
-    return RT_EOK;
-}
-
-static rt_size_t tap_netif_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
-{
-    rt_set_errno(-RT_ENOSYS);
-    return 0;
-}
-
-static rt_size_t tap_netif_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
-{
-    rt_set_errno(-RT_ENOSYS);
-    return 0;
-}
-
-static rt_err_t tap_netif_control(rt_device_t dev, int cmd, void *args)
-{
-    switch (cmd)
-    {
-    case NIOCTL_GADDR:
-        /* get mac address */
-        if (args) rt_memcpy(args, tap_netif_device.dev_addr, 6);
-        else return -RT_ERROR;
-        break;
-
-    default :
-        break;
-    }
-
-    return RT_EOK;
-}
-
-rt_err_t tap_netif_tx( rt_device_t dev, struct pbuf* p)
-{
-    struct pbuf *q;
-    char buffer[2048];
-    int length;
-    tap_win32_overlapped_t *handle;
-    unsigned char* ptr;
-
-    handle = NETIF_TAP(dev);
-
-    /* lock EMAC device */
-    rt_sem_take(&sem_lock, RT_WAITING_FOREVER);
-
-    /* copy data to tx buffer */
-    q = p;
-    ptr = (rt_uint8_t*)buffer;
-    while (q)
-    {
-        memcpy(ptr, q->payload, q->len);
-        ptr += q->len;
-        q = q->next;
-    }
-    length = p->tot_len;
-
-    tap_win32_write(handle, buffer, length);
-
-    /* unlock EMAC device */
-    rt_sem_release(&sem_lock);
-
-    return RT_EOK;
-}
-
-struct pbuf *tap_netif_rx(rt_device_t dev)
-{
-    struct pbuf* p = RT_NULL;
-    tap_win32_overlapped_t *handle;
-    rt_uint8_t *buf;
-    int max_size = 4096;
-    int size;
-
-    handle = NETIF_TAP(dev);
-
-    size = tap_win32_read(handle, &buf, max_size);
-    if (size > 0) {
-        p = pbuf_alloc(PBUF_LINK, size, PBUF_RAM);
-        pbuf_take(p, buf, size);
-
-        tap_win32_free_buffer(handle, buf);
-    }
-
-    return p;
-}
-
-void tap_netif_hw_init(void)
-{
-    rt_sem_init(&sem_lock, "eth_lock", 1, RT_IPC_FLAG_FIFO);
-
-    tap_netif_device.dev_addr[0] = 0x00;
-    tap_netif_device.dev_addr[1] = 0x60;
-    tap_netif_device.dev_addr[2] = 0x37;
-    /* set mac address: (only for test) */
-    tap_netif_device.dev_addr[3] = 0x12;
-    tap_netif_device.dev_addr[4] = 0x34;
-    tap_netif_device.dev_addr[5] = 0x56;
-
-    tap_netif_device.parent.parent.init     = tap_netif_init;
-    tap_netif_device.parent.parent.open     = tap_netif_open;
-    tap_netif_device.parent.parent.close    = tap_netif_close;
-    tap_netif_device.parent.parent.read     = tap_netif_read;
-    tap_netif_device.parent.parent.write    = tap_netif_write;
-    tap_netif_device.parent.parent.control  = tap_netif_control;
-    tap_netif_device.parent.parent.user_data= RT_NULL;
-
-    tap_netif_device.parent.eth_rx          = tap_netif_rx;
-    tap_netif_device.parent.eth_tx          = tap_netif_tx;
-
-    eth_device_init(&(tap_netif_device.parent), "e0");
-}