97bead5496
Change-Id: I13cc4cbfc1e305e17c0630f11a1173afe96e8a03 Signed-off-by: chao.an <anchao@xiaomi.com>
182 lines
5.7 KiB
C
182 lines
5.7 KiB
C
/****************************************************************************
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* net/netdev/netdev_lladdrsize.c
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*
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* Copyright (C) 2017-2018 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 <string.h>
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#include <assert.h>
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#include <errno.h>
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#include <net/if.h>
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#include <nuttx/net/net.h>
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#include <nuttx/net/netdev.h>
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#include <nuttx/net/radiodev.h>
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#include <nuttx/net/bluetooth.h>
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#include <nuttx/net/sixlowpan.h>
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#include "netdev/netdev.h"
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netdev_pktradio_addrlen
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*
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* Description:
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* Returns the size of the node address associated with a packet radio.
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* This is probably CONFIG_PKTRADIO_ADDRLEN but we cannot be sure in the
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* case that there are multiple packet radios. In that case, we have to
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* query the radio for its address length.
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*
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* Input Parameters:
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* dev - A reference to the device of interest
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*
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* Returned Value:
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* The size of the MAC address associated with this radio
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*
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****************************************************************************/
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#if defined(CONFIG_NET_6LOWPAN) && (defined(CONFIG_WIRELESS_PKTRADIO) || \
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defined(CONFIG_NET_BLUETOOTH))
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static inline int netdev_pktradio_addrlen(FAR struct net_driver_s *dev)
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{
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FAR struct radio_driver_s *radio = (FAR struct radio_driver_s *)dev;
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struct radiodev_properties_s properties;
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int ret;
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DEBUGASSERT(radio != NULL && radio->r_properties != NULL);
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ret = radio->r_properties(radio, &properties);
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if (ret < 0)
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{
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return ret;
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}
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return properties.sp_addrlen;
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netdev_lladdrsize
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*
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* Description:
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* Returns the size of the MAC address associated with a network device.
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*
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* Input Parameters:
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* dev - A reference to the device of interest
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*
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* Returned Value:
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* The size of the MAC address associated with this device
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*
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****************************************************************************/
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int netdev_lladdrsize(FAR struct net_driver_s *dev)
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{
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DEBUGASSERT(dev != NULL);
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/* Get the length of the address for this link layer type */
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switch (dev->d_lltype)
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{
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#ifdef CONFIG_NET_ETHERNET
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case NET_LL_ETHERNET:
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case NET_LL_IEEE80211:
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{
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/* Size of the Ethernet MAC address */
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return IFHWADDRLEN;
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}
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#endif
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#ifdef CONFIG_NET_6LOWPAN
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#ifdef CONFIG_WIRELESS_BLUETOOTH
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case NET_LL_BLUETOOTH:
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{
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/* 6LoWPAN can be configured to use either extended or short
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* addressing.
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*/
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return BLUETOOTH_HDRLEN;
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}
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#endif /* CONFIG_WIRELESS_BLUETOOTH */
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#ifdef CONFIG_WIRELESS_IEEE802154
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case NET_LL_IEEE802154:
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{
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/* 6LoWPAN can be configured to use either extended or short
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* addressing.
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*/
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#ifdef CONFIG_NET_6LOWPAN_EXTENDEDADDR
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return NET_6LOWPAN_EADDRSIZE;
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#else
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return NET_6LOWPAN_SADDRSIZE;
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#endif
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}
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#endif /* CONFIG_WIRELESS_IEEE802154 */
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#if defined(CONFIG_WIRELESS_PKTRADIO) || defined(CONFIG_NET_BLUETOOTH)
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#ifdef CONFIG_WIRELESS_PKTRADIO
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case NET_LL_PKTRADIO:
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#endif
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#ifdef CONFIG_NET_BLUETOOTH
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case NET_LL_BLUETOOTH:
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#endif
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{
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/* Return the size of the packet radio address */
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return netdev_pktradio_addrlen(dev);
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}
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#endif /* CONFIG_WIRELESS_PKTRADIO || CONFIG_NET_BLUETOOTH */
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#endif /* CONFIG_NET_6LOWPAN */
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default:
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{
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/* The link layer type associated has no address */
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return 0;
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}
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}
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}
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