106 lines
3.4 KiB
C
106 lines
3.4 KiB
C
/****************************************************************************
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* net/netdev/netdev_lladdrsize.c
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*
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* Copyright (C) 2017 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 <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 "netdev/netdev.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netdev_type_lladdrsize
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*
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* Description:
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* Returns the size of the MAC address associated with a link layer type.
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*
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* Parameters:
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* lltype - link layer type code
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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_type_lladdrsize(uint8_t lltype)
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{
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/* Get the length of the address for this link layer type */
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#ifdef CONFIG_NET_ETHERNET
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if (lltype == NET_LL_ETHERNET)
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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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else
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#endif
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#ifdef CONFIG_NET_6LOWPAN
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if (lltype == 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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else
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#endif
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{
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/* Either the link layer type associated with lltype has no address,
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* or support for that link layer type is not enabled.
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*/
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return 0;
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}
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}
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