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134 lines
4.3 KiB
134 lines
4.3 KiB
/**************************************************************************** |
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* net/net_arptimer.c |
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* |
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* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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#include <nuttx/config.h> |
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#ifdef CONFIG_NET |
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#include <stdint.h> |
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#include <time.h> |
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#include <wdog.h> |
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#include <debug.h> |
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#include <nuttx/net/uip/uipopt.h> |
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#include <nuttx/net/uip/uip-arp.h> |
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#include "net_internal.h" |
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#ifdef CONFIG_NET_ARP |
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/**************************************************************************** |
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* Pre-processor Definitions |
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****************************************************************************/ |
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/* ARP timer interval = 10 seconds. CLK_TCK is the number of clock ticks |
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* per second |
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*/ |
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#define ARPTIMER_WDINTERVAL (10*CLK_TCK) |
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/**************************************************************************** |
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* Private Data |
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****************************************************************************/ |
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static WDOG_ID g_arptimer; /* ARP timer */ |
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/**************************************************************************** |
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* Private Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Function: arptimer_poll |
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* |
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* Description: |
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* Periodic timer handler. Called from the timer interrupt handler. |
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* |
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* Parameters: |
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* argc - The number of available arguments |
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* arg - The first argument |
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* |
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* Returned Value: |
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* None |
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* |
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* Assumptions: |
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* |
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****************************************************************************/ |
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static void arptimer_poll(int argc, uint32_t arg, ...) |
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{ |
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/* Call the ARP timer function every 10 seconds. */ |
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uip_arp_timer(); |
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/* Setup the watchdog timer again */ |
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(void)wd_start(g_arptimer, ARPTIMER_WDINTERVAL, arptimer_poll, 0); |
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} |
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/**************************************************************************** |
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* Public Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Function: arptimer_init |
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* |
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* Description: |
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* Initialized the 10 second timer that is need by uIP to age ARP |
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* associations |
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* |
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* Parameters: |
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* None |
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* |
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* Returned Value: |
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* None |
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* |
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* Assumptions: |
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* Called once at system initialization time |
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* |
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****************************************************************************/ |
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void arptimer_init(void) |
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{ |
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/* Create and start the ARP timer */ |
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g_arptimer = wd_create(); |
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(void)wd_start(g_arptimer, ARPTIMER_WDINTERVAL, arptimer_poll, 0); |
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} |
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#endif /* CONFIG_NET_ARP */ |
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#endif /* CONFIG_NET */
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