Contiki 2.6
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00001 /* 00002 * Copyright (c) 2007, Swedish Institute of Computer Science. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the Institute nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * This file is part of the Contiki operating system. 00030 * 00031 * $Id: channel.c,v 1.3 2010/06/15 19:22:25 adamdunkels Exp $ 00032 */ 00033 00034 /** 00035 * \file 00036 * Rime's channel abstraction 00037 * \author 00038 * Adam Dunkels <adam@sics.se> 00039 */ 00040 00041 #include "net/rime/chameleon.h" 00042 #include "net/rime.h" 00043 #include "lib/list.h" 00044 00045 LIST(channel_list); 00046 00047 /*---------------------------------------------------------------------------*/ 00048 void 00049 channel_init(void) 00050 { 00051 list_init(channel_list); 00052 } 00053 /*---------------------------------------------------------------------------*/ 00054 void 00055 channel_set_attributes(uint16_t channelno, 00056 const struct packetbuf_attrlist attrlist[]) 00057 { 00058 struct channel *c; 00059 c = channel_lookup(channelno); 00060 if(c != NULL) { 00061 c->attrlist = attrlist; 00062 c->hdrsize = chameleon_hdrsize(attrlist); 00063 } 00064 } 00065 /*---------------------------------------------------------------------------*/ 00066 void 00067 channel_open(struct channel *c, uint16_t channelno) 00068 { 00069 c->channelno = channelno; 00070 list_add(channel_list, c); 00071 } 00072 /*---------------------------------------------------------------------------*/ 00073 void 00074 channel_close(struct channel *c) 00075 { 00076 list_remove(channel_list, c); 00077 } 00078 /*---------------------------------------------------------------------------*/ 00079 struct channel * 00080 channel_lookup(uint16_t channelno) 00081 { 00082 struct channel *c; 00083 for(c = list_head(channel_list); c != NULL; c = list_item_next(c)) { 00084 if(c->channelno == channelno) { 00085 return c; 00086 } 00087 } 00088 return NULL; 00089 } 00090 /*---------------------------------------------------------------------------*/