90 lines
3 KiB
C
90 lines
3 KiB
C
/*
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* Copyright (c) 2007, Swedish Institute of Computer Science.
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* All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be 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 INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: channel.c,v 1.2 2009/03/12 21:58:20 adamdunkels Exp $
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*/
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/**
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* \file
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* Rime's channel abstraction
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#include "net/rime/chameleon.h"
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#include "net/rime.h"
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#include "lib/list.h"
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LIST(channel_list);
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/*---------------------------------------------------------------------------*/
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void
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channel_init(void)
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{
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list_init(channel_list);
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}
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/*---------------------------------------------------------------------------*/
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void
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channel_set_attributes(uint16_t channelno,
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const struct packetbuf_attrlist attrlist[])
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{
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struct channel *c;
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c = channel_lookup(channelno);
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if(c != NULL) {
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c->attrlist = attrlist;
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c->hdrsize = chameleon_hdrsize(attrlist);
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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channel_open(struct channel *c, uint16_t channelno)
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{
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c->channelno = channelno;
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list_add(channel_list, c);
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}
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/*---------------------------------------------------------------------------*/
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void
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channel_close(struct channel *c)
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{
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list_remove(channel_list, c);
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}
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/*---------------------------------------------------------------------------*/
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struct channel *
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channel_lookup(uint16_t channelno)
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{
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struct channel *c;
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for(c = list_head(channel_list); c != NULL; c = c->next) {
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if(c->channelno == channelno) {
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return c;
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}
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}
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return NULL;
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}
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/*---------------------------------------------------------------------------*/
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