diff --git a/bsp/simulator/applications/application.c b/bsp/simulator/applications/application.c
index ea07f01c5f..9adca985fa 100755
--- a/bsp/simulator/applications/application.c
+++ b/bsp/simulator/applications/application.c
@@ -22,7 +22,11 @@
void rt_init_thread_entry(void *parameter)
{
#ifdef RT_USING_LWIP
+#ifdef RT_USING_TAPNETIF
+ tap_netif_hw_init();
+#else
pcap_netif_hw_init();
+#endif
#endif
rt_platform_init();
diff --git a/bsp/simulator/drivers/SConscript b/bsp/simulator/drivers/SConscript
index eb491b810e..739d8f2b5f 100644
--- a/bsp/simulator/drivers/SConscript
+++ b/bsp/simulator/drivers/SConscript
@@ -26,8 +26,10 @@ if GetDepend('RT_USING_DFS_WINSHAREDIR') == False:
SrcRemove(src, 'dfs_win32.c')
if 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'])
+ SrcRemove(src, ['module_win32.c', 'dfs_win32.c', 'tap_netif.c'])
group = DefineGroup('Drivers', src, depend = [''],
CPPPATH = CPPPATH, LIBS=LIBS, LIBPATH=LIBPATH)
diff --git a/bsp/simulator/drivers/tap_netif.c b/bsp/simulator/drivers/tap_netif.c
new file mode 100644
index 0000000000..59a5d12e68
--- /dev/null
+++ b/bsp/simulator/drivers/tap_netif.c
@@ -0,0 +1,791 @@
+/*
+ * 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 .
+ */
+
+#include
+#include
+#include
+#include
+#include
+
+#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, rt_uint8_t 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");
+}