Adding uIP 1.0

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@310 42af7a65-404d-4744-a932-0658087f49c3

arch/sim/src/Makefile

@@ -49,6 +49,9 @@ CSRCS		= up_initialize.c up_idle.c up_interruptcontext.c \
 ifeq ($(CONFIG_FS_FAT),y)
 CSRCS		+= up_blockdevice.c up_deviceimage.c
 endif
+ifeq ($(CONFIG_NET_UIP),y)
+CSRCS		+= up_uipdriver.c
+endif
 
 COBJS		= $(CSRCS:.c=$(OBJEXT))
 

arch/sim/src/up_blockdevice.c

@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 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.
  *

arch/sim/src/up_idle.c

@@ -14,7 +14,7 @@
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
- * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ * 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.
  *
@@ -80,5 +80,11 @@ void up_idle(void)
    */
 
   sched_process_timer();
+
+  /* Run the network if enabled */
+
+#ifdef CONFIG_NET_UIP
+  uipdriver_loop();
+#endif
 }
 

arch/sim/src/up_initialize.c

@@ -86,4 +86,7 @@ void up_initialize(void)
   devnull_register();       /* Standard /dev/null */
   up_devconsole();          /* Our private /dev/console */
   up_registerblockdevice(); /* Our simulated block device /dev/blkdev */
+#ifdef CONFIG_NET_UIP
+  uipdriver_init();         /* Our "real" netwok driver */
+#endif
 }

arch/sim/src/up_internal.h

@@ -107,5 +107,12 @@ extern void up_registerblockdevice(void);
 
 extern char *up_deviceimage(void);
 
+/* up_uipdriver.c *********************************************************/
+
+#ifdef CONFIG_NET_UIP
+extern int uipdriver_init(void);
+extern void uipdriver_loop(void);
+#endif
+
 #endif /* __ASSEMBLY__ */
 #endif /* __ARCH_UP_INTERNAL_H */

arch/sim/src/up_uipdriver.c

@@ -0,0 +1,329 @@
+/****************************************************************************
+ * up_uipdriver.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 <nuttx/config.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <sys/socket.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <net/uip/uip.h>
+#include <net/uip/uip-arch.h>
+#include <net/uip/uip-arp.h>
+
+#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 */
+
+#include "up_internal.h"
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
+
+#define UIP_DRIPADDR0   192
+#define UIP_DRIPADDR1   168
+#define UIP_DRIPADDR2   0
+#define UIP_DRIPADDR3   1
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct timer
+{
+  uint32 interval;
+  uint32 start;
+};
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+#ifdef CONFIG_DEBUG
+static int drop = 0;
+#endif
+static int fd;
+static struct timer periodic_timer;
+static struct timer arp_timer;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static uint32 gettime( void )
+{
+  struct timespec tm;
+  (void)clock_gettime(CLOCK_REALTIME, &tm);
+  return tm.tv_sec*1000 + tm.tv_nsec/1000000;
+}
+
+static void timer_set( struct timer *t, unsigned int interval )
+{
+  t->interval = interval;
+  t->start    = gettime();
+}
+
+static boolean timer_expired( struct timer *t )
+{
+  return (gettime() - t->start) >= t->interval;
+}
+
+void timer_reset(struct timer *t)
+{
+  t->start += t->interval;
+}
+
+static void tapdev_init(void)
+{
+  char buf[1024];
+
+  fd = open(DEVTAP, O_RDWR);
+  if(fd == -1)
+    {
+      lib_rawprintf("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)
+      {
+        lib_rawprintf(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);
+}
+
+static unsigned int tapdev_read(void)
+{
+  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, uip_buf, UIP_BUFSIZE);
+  if(ret == -1)
+    {
+      lib_rawprintf("tap_dev: tapdev_read: read");
+    }
+
+  dbg("tap_dev: tapdev_read: read %d bytes\n", ret);
+  {
+    int i;
+    for(i = 0; i < 20; i++)
+      {
+        vdbg("%x ", uip_buf[i]);
+      }
+    vdbg("\n");
+  }
+
+#ifdef CONFIG_DEBUG
+  check_checksum(uip_buf, ret);
+#endif
+  return ret;
+}
+
+static void tapdev_send(void)
+{
+  int ret;
+#ifdef CONFIG_DEBUG
+  dbg("tapdev_send: sending %d bytes\n", uip_len);
+  check_checksum(uip_buf, uip_len);
+
+  drop++;
+  if(drop % 8 == 7)
+    {
+      dbg("Dropped a packet!\n");
+      return;
+    }
+#endif
+
+  ret = write(fd, uip_buf, uip_len);
+  if(ret == -1)
+    {
+      perror("tap_dev: tapdev_send: writev");
+      exit(1);
+    }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void uipdriver_loop(void)
+{
+  int i;
+
+  uip_len = tapdev_read();
+  if (uip_len > 0)
+    {
+      if (BUF->type == htons(UIP_ETHTYPE_IP))
+        {
+          uip_arp_ipin();
+          uip_input();
+
+          /* If the above function invocation resulted in data that
+           * should be sent out on the network, the global variable
+           * uip_len is set to a value > 0.
+           */
+
+          if (uip_len > 0)
+            {
+              uip_arp_out();
+              tapdev_send();
+            }
+        }
+      else if (BUF->type == htons(UIP_ETHTYPE_ARP))
+        {
+          uip_arp_arpin();
+
+          /* If the above function invocation resulted in data that
+           * should be sent out on the network, the global variable
+           * uip_len is set to a value > 0.
+           */
+
+          if (uip_len > 0)
+            {
+              tapdev_send();
+            }
+        }
+    }
+  else if (timer_expired(&periodic_timer))
+    {
+      timer_reset(&periodic_timer);
+      for(i = 0; i < UIP_CONNS; i++)
+        {
+          uip_periodic(i);
+
+          /* If the above function invocation resulted in data that
+           * should be sent out on the network, the global variable
+           * uip_len is set to a value > 0.
+           */
+
+          if (uip_len > 0)
+            {
+              uip_arp_out();
+              tapdev_send();
+            }
+        }
+
+#if UIP_UDP
+      for(i = 0; i < UIP_UDP_CONNS; i++)
+        {
+          uip_udp_periodic(i);
+
+          /* If the above function invocation resulted in data that
+           * should be sent out on the network, the global variable
+           * uip_len is set to a value > 0.
+           */
+
+          if (uip_len > 0)
+            {
+              uip_arp_out();
+              tapdev_send();
+            }
+        }
+#endif /* UIP_UDP */
+
+      /* Call the ARP timer function every 10 seconds. */
+
+      if (timer_expired(&arp_timer))
+        {
+          timer_reset(&arp_timer);
+          uip_arp_timer();
+        }
+    }
+}
+
+int uipdriver_init(void)
+{
+  timer_set(&periodic_timer, CLK_TCK / 2);
+  timer_set(&arp_timer, CLK_TCK * 10);
+
+  tapdev_init();
+  uip_init();
+  return OK;
+}