Corrects UIP driver build

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@314 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 205 insertions, 0 deletions

diff --git a/nuttx/arch/sim/src/up_tapdev.c b/nuttx/arch/sim/src/up_tapdev.c
new file mode 100644
index 000000000..e03304846
--- /dev/null
+++ b/nuttx/arch/sim/src/up_tapdev.c
@@ -0,0 +1,205 @@
+/****************************************************************************
+ * up_tapdev.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Based on code from uIP which also has a BSD-like license:
+ *
+ *   Copyright (c) 2001, Adam Dunkels.
+ *   All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/socket.h>
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+
+#if 0
+#include "uip/uip.h"
+#include <net/uip/uip-arch.h>
+#include <net/uip/uip-arp.h>
+#endif
+
+#ifdef linux
+# include <sys/ioctl.h>
+# include <linux/if.h>
+# include <linux/if_tun.h>
+# define DEVTAP "/dev/net/tun"
+#else  /* linux */
+# define DEVTAP "/dev/tap0"
+#endif /* linux */
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+#define TAPDEV_DEBUG    1
+
+#define UIP_DRIPADDR0   192
+#define UIP_DRIPADDR1   168
+#define UIP_DRIPADDR2   0
+#define UIP_DRIPADDR3   1
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+#ifdef TAPDEV_DEBUG
+static int drop = 0;
+#endif
+static int fd;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+unsigned long up_getwalltime( void )
+{
+  struct timeval tm;
+  (void)gettimeofday(&tm, NULL);
+  return tm.tv_sec*1000 + tm.tv_usec/1000;
+}
+
+void tapdev_init(void)
+{
+  char buf[1024];
+
+  fd = open(DEVTAP, O_RDWR);
+  if(fd == -1)
+    {
+      printf("tapdev: tapdev_init: open");
+      return;
+    }
+
+#ifdef linux
+  {
+    struct ifreq ifr;
+    memset(&ifr, 0, sizeof(ifr));
+    ifr.ifr_flags = IFF_TAP|IFF_NO_PI;
+    if (ioctl(fd, TUNSETIFF, (void *) &ifr) < 0)
+      {
+        printf(buf);
+        return;
+      }
+  }
+#endif /* Linux */
+
+  snprintf(buf, sizeof(buf), "ifconfig tap0 inet %d.%d.%d.%d",
+	   UIP_DRIPADDR0, UIP_DRIPADDR1, UIP_DRIPADDR2, UIP_DRIPADDR3);
+  system(buf);
+}
+
+unsigned int tapdev_read(char *buf, unsigned int buflen)
+{
+  fd_set fdset;
+  struct timeval tv;
+  int ret;
+
+  tv.tv_sec = 0;
+  tv.tv_usec = 1000;
+
+  FD_ZERO(&fdset);
+  FD_SET(fd, &fdset);
+
+  ret = select(fd + 1, &fdset, NULL, NULL, &tv);
+  if(ret == 0)
+    {
+      return 0;
+    }
+
+  ret = read(fd, buf, buflen);
+  if(ret == -1)
+    {
+      printf("tap_dev: tapdev_read: read");
+    }
+
+#ifdef TAPDEV_DEBUG
+  printf("tap_dev: tapdev_read: read %d bytes\n", ret);
+  {
+    int i;
+    for(i = 0; i < 20; i++)
+      {
+        printf("%x ", buf[i]);
+      }
+    printf("\n");
+  }
+#endif
+
+  return ret;
+}
+
+void tapdev_send(char *buf, unsigned int buflen)
+{
+  int ret;
+#ifdef TAPDEV_DEBUG
+  printf("tapdev_send: sending %d bytes\n", buflen);
+
+  drop++;
+  if(drop % 8 == 7)
+    {
+      printf("Dropped a packet!\n");
+      return;
+    }
+#endif
+
+  ret = write(fd, buf, buflen);
+  if(ret == -1)
+    {
+      perror("tap_dev: tapdev_send: write");
+      exit(1);
+    }
+}
+