lowpan6_common.h

00001 /**
00002  * @file
00003  *
00004  * Common 6LowPAN routines for IPv6. Uses ND tables for link-layer addressing. Fragments packets to 6LowPAN units.
00005  */
00006 
00007 /*
00008  * Copyright (c) 2015 Inico Technologies Ltd.
00009  * All rights reserved.
00010  *
00011  * Redistribution and use in source and binary forms, with or without modification,
00012  * are permitted provided that the following conditions are met:
00013  *
00014  * 1. Redistributions of source code must retain the above copyright notice,
00015  *    this list of conditions and the following disclaimer.
00016  * 2. Redistributions in binary form must reproduce the above copyright notice,
00017  *    this list of conditions and the following disclaimer in the documentation
00018  *    and/or other materials provided with the distribution.
00019  * 3. The name of the author may not be used to endorse or promote products
00020  *    derived from this software without specific prior written permission.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
00023  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00024  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
00025  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00026  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
00027  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00028  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00029  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
00030  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
00031  * OF SUCH DAMAGE.
00032  *
00033  * This file is part of the lwIP TCP/IP stack.
00034  *
00035  * Author: Ivan Delamer <delamer@inicotech.com>
00036  *
00037  *
00038  * Please coordinate changes and requests with Ivan Delamer
00039  * <delamer@inicotech.com>
00040  */
00041 
00042 #ifndef LWIP_HDR_LOWPAN6_COMMON_H
00043 #define LWIP_HDR_LOWPAN6_COMMON_H
00044 
00045 #include "netif/lowpan6_opts.h"
00046 
00047 #if LWIP_IPV6 /* don't build if IPv6 is disabled in lwipopts.h */
00048 
00049 #include "lwip/pbuf.h"
00050 #include "lwip/ip.h"
00051 #include "lwip/ip6_addr.h"
00052 #include "lwip/netif.h"
00053 
00054 #ifdef __cplusplus
00055 extern "C" {
00056 #endif
00057 
00058 /** Helper define for a link layer address, which can be encoded as 0, 2 or 8 bytes */
00059 struct lowpan6_link_addr {
00060   /* encoded length of the address */
00061   u8_t addr_len;
00062   /* address bytes */
00063   u8_t addr[8];
00064 };
00065 
00066 s8_t lowpan6_get_address_mode(const ip6_addr_t *ip6addr, const struct lowpan6_link_addr *mac_addr);
00067 
00068 #if LWIP_6LOWPAN_IPHC
00069 err_t lowpan6_compress_headers(struct netif *netif, u8_t *inbuf, size_t inbuf_size, u8_t *outbuf, size_t outbuf_size,
00070                                u8_t *lowpan6_header_len_out, u8_t *hidden_header_len_out, ip6_addr_t *lowpan6_contexts,
00071                                const struct lowpan6_link_addr *src, const struct lowpan6_link_addr *dst);
00072 struct pbuf *lowpan6_decompress(struct pbuf *p, u16_t datagram_size, ip6_addr_t *lowpan6_contexts,
00073                                 struct lowpan6_link_addr *src, struct lowpan6_link_addr *dest);
00074 #endif /* LWIP_6LOWPAN_IPHC */
00075 
00076 #ifdef __cplusplus
00077 }
00078 #endif
00079 
00080 #endif /* LWIP_IPV6 */
00081 
00082 #endif /* LWIP_HDR_LOWPAN6_COMMON_H */