107 lines
3.9 KiB
C
107 lines
3.9 KiB
C
/****************************************************************************
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* net/sixlowpan/sixlowpan_globals.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 "sixlowpan/sixlowpan_internal.h"
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#ifdef CONFIG_NET_6LOWPAN
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* A pointer to the optional, architecture-specific compressor */
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FAR struct sixlowpan_nhcompressor_s *g_sixlowpan_compressor;
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#ifdef CONFIG_NET_6LOWPAN_SNIFFER
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/* A pointer to the optional, architecture-specific sniffer */
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FAR struct sixlowpan_rime_sniffer_s *g_sixlowpan_sniffer;
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#endif
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/* The following data values are used to hold intermediate settings while
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* processing IEEE802.15.4 frames. These globals are shared with incoming
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* and outgoing frame processing and possibly with mutliple IEEE802.15.4 MAC
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* devices. The network lock provides exclusive use of these globals
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* during that processing
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*/
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/* A pointer to the rime buffer.
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*
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* We initialize it to the beginning of the rime buffer, then access
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* different fields by updating the offset ieee->g_rime_hdrlen.
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*/
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FAR uint8_t *g_rimeptr;
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/* The length of the payload in the Rime buffer.
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*
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* The payload is what comes after the compressed or uncompressed headers
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* (can be the IP payload if the IP header only is compressed or the UDP
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* payload if the UDP header is also compressed)
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*/
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uint8_t g_rime_payloadlen;
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/* g_uncomp_hdrlen is the length of the headers before compression (if HC2
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* is used this includes the UDP header in addition to the IP header).
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*/
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uint8_t g_uncomp_hdrlen;
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/* g_rime_hdrlen is the total length of (the processed) 6lowpan headers
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* (fragment headers, IPV6 or HC1, HC2, and HC1 and HC2 non compressed
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* fields).
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*/
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uint8_t g_rime_hdrlen;
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/* Offset first available byte for the payload after header region. */
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uint8_t g_dataoffset;
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/* Packet buffer metadata: Attributes and addresses */
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uint16_t g_pktattrs[PACKETBUF_NUM_ATTRS];
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struct rimeaddr_s g_pktaddrs[PACKETBUF_NUM_ADDRS];
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#endif /* CONFIG_NET_6LOWPAN */
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