100 lines
3.6 KiB
C
100 lines
3.6 KiB
C
/****************************************************************************
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* net/arp/arp_poll.c
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*
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* Copyright (C) 2014 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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#include <stdint.h>
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#include <nuttx/net/netdev.h>
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#include "devif/devif.h"
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#include "arp/arp.h"
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#ifdef CONFIG_NET_ARP_SEND
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* This is the singleton "connection" structure */
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struct arp_conn_s g_arp_conn;
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/****************************************************************************
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* Private Functions
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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: arp_poll
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*
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* Description:
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* Poll all pending transfer for ARP requests to send.
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*
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* Assumptions:
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* This function is called from the MAC device driver indirectly through
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* devif_poll() and devif_timer() and may be called from the timer
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* interrupt/watchdog handler level.
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*
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****************************************************************************/
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int arp_poll(FAR struct net_driver_s *dev, devif_poll_callback_t callback)
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{
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/* Setup for the ARP callback (most of these do not apply) */
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dev->d_appdata = NULL;
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dev->d_snddata = NULL;
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dev->d_len = 0;
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dev->d_sndlen = 0;
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/* Perform the ARP callbacks */
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(void)devif_callback_execute(dev, &g_arp_conn, PKT_POLL, g_arp_conn.list);
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/* Call back into the driver */
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return callback(dev);
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}
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#endif /* CONFIG_NET_ARP_SEND */
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