117 lines
4.1 KiB
C
117 lines
4.1 KiB
C
/****************************************************************************
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* net/sixlowpan/sixlowpan_input.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 <errno.h>
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#include "nuttx/net/netdev.h"
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#include "sixlowpan/sixlowpan_internal.h"
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#ifdef CONFIG_NET_6LOWPAN
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Function: sixlowpan_isbroadcast
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*
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* Description:
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* Return the address length associated with a 2-bit address mode
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*
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* Input parameters:
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* addrmode - The address mode
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*
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* Returned Value:
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* The address length associated with the address mode.
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*
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****************************************************************************/
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static bool sixlowpan_isbroadcast(uint8_t mode, FAR uint8_t *addr)
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{
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int i = ((mode == FRAME802154_SHORTADDRMODE) ? 2 : 8);
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while (i-- > 0)
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{
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if (addr[i] != 0xff)
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{
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return false;
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}
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}
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return true;
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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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* Name: sixlowpan_input
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*
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* Description:
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* Process an incoming IP packet.
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*
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* This function is called when the device driver has received a 6loWPAN
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* packet from the network. The packet from the device driver must be
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* present in the d_buf buffer, and the length of the packet should be
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* placed in the d_len field.
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*
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* When the function returns, there may be an outbound packet placed
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* in the d_buf packet buffer. If so, the d_len field is set to
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* the length of the packet. If no packet is to be sent out, the
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* d_len field is set to 0.
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*
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* Input Parameters:
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* dev - The IEEE802.15.4 MAC network driver interface.
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*
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* Returned Value:
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* Ok is returned on success; Othewise a negated errno value is returned.
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*
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****************************************************************************/
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int sixlowpan_input(FAR struct net_driver_s *dev)
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{
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/* REVISIT: To be provided */
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return -ENOSYS;
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}
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#endif /* CONFIG_NET_6LOWPAN */
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