Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
2026-10-29 04:13:34 +08:00 · 2012-09-17 18:18:44 +00:00
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+/****************************************************************************
+ * net/net_arptimer.c
+ *
+ *   Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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>
+#ifdef CONFIG_NET
+
+#include <stdint.h>
+#include <time.h>
+#include <wdog.h>
+#include <debug.h>
+
+#include <nuttx/net/uip/uipopt.h>
+#include <nuttx/net/uip/uip-arp.h>
+
+#include "net_internal.h"
+
+#ifdef CONFIG_NET_ARP
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* ARP timer interval = 10 seconds. CLK_TCK is the number of clock ticks
+ * per second
+ */
+
+#define ARPTIMER_WDINTERVAL (10*CLK_TCK)
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static WDOG_ID g_arptimer;           /* ARP timer */
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: arptimer_poll
+ *
+ * Description:
+ *   Periodic timer handler.  Called from the timer interrupt handler.
+ *
+ * Parameters:
+ *   argc - The number of available arguments
+ *   arg  - The first argument
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *
+ ****************************************************************************/
+
+static void arptimer_poll(int argc, uint32_t arg, ...)
+{
+  /* Call the ARP timer function every 10 seconds. */
+
+  uip_arp_timer();
+
+  /* Setup the watchdog timer again */
+
+  (void)wd_start(g_arptimer, ARPTIMER_WDINTERVAL, arptimer_poll, 0);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: arptimer_init
+ *
+ * Description:
+ *   Initialized the 10 second timer that is need by uIP to age ARP
+ *   associations
+ *
+ * Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None
+ *
+ * Assumptions:
+ *   Called once at system initialization time
+ *
+ ****************************************************************************/
+
+void arptimer_init(void)
+{
+  /* Create and start the ARP timer */
+
+  g_arptimer = wd_create();
+ (void)wd_start(g_arptimer, ARPTIMER_WDINTERVAL, arptimer_poll, 0);
+}
+
+#endif /* CONFIG_NET_ARP */
+#endif /* CONFIG_NET */