| /**************************************************************************** |
| * net/net_arptimer.c |
| * |
| * Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved. |
| * Author: Gregory Nutt <spudmonkey@racsa.co.cr> |
| * |
| * 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 <net/uip/uipopt.h> |
| #include <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 */ |