/* * Copyright (c) 2007, Swedish Institute of Computer Science. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * This file is part of the Contiki operating system. * * $Id: channel.c,v 1.3 2010/06/15 19:22:25 adamdunkels Exp $ */ /** * \file * Rime's channel abstraction * \author * Adam Dunkels <adam@sics.se> */ #include "net/rime/chameleon.h" #include "net/rime.h" #include "lib/list.h" LIST(channel_list); /*---------------------------------------------------------------------------*/ void channel_init(void) { list_init(channel_list); } /*---------------------------------------------------------------------------*/ void channel_set_attributes(uint16_t channelno, const struct packetbuf_attrlist attrlist[]) { struct channel *c; c = channel_lookup(channelno); if(c != NULL) { c->attrlist = attrlist; c->hdrsize = chameleon_hdrsize(attrlist); } } /*---------------------------------------------------------------------------*/ void channel_open(struct channel *c, uint16_t channelno) { c->channelno = channelno; list_add(channel_list, c); } /*---------------------------------------------------------------------------*/ void channel_close(struct channel *c) { list_remove(channel_list, c); } /*---------------------------------------------------------------------------*/ struct channel * channel_lookup(uint16_t channelno) { struct channel *c; for(c = list_head(channel_list); c != NULL; c = list_item_next(c)) { if(c->channelno == channelno) { return c; } } return NULL; } /*---------------------------------------------------------------------------*/