1 /** 2 * @file 3 * 4 * Common 6LowPAN routines for IPv6. Uses ND tables for link-layer addressing. Fragments packets to 6LowPAN units. 5 */ 6 7 /* 8 * Copyright (c) 2015 Inico Technologies Ltd. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without modification, 12 * are permitted provided that the following conditions are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright notice, 15 * this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright notice, 17 * this list of conditions and the following disclaimer in the documentation 18 * and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 25 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 27 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 31 * OF SUCH DAMAGE. 32 * 33 * This file is part of the lwIP TCP/IP stack. 34 * 35 * Author: Ivan Delamer <delamer@inicotech.com> 36 * 37 * 38 * Please coordinate changes and requests with Ivan Delamer 39 * <delamer@inicotech.com> 40 */ 41 42 #ifndef LWIP_HDR_LOWPAN6_COMMON_H 43 #define LWIP_HDR_LOWPAN6_COMMON_H 44 45 #include "netif/lowpan6_opts.h" 46 47 #if LWIP_IPV6 /* don't build if IPv6 is disabled in lwipopts.h */ 48 49 #include "lwip/pbuf.h" 50 #include "lwip/ip.h" 51 #include "lwip/ip6_addr.h" 52 #include "lwip/netif.h" 53 54 #ifdef __cplusplus 55 extern "C" { 56 #endif 57 58 /** Helper define for a link layer address, which can be encoded as 0, 2 or 8 bytes */ 59 struct lowpan6_link_addr { 60 /* encoded length of the address */ 61 u8_t addr_len; 62 /* address bytes */ 63 u8_t addr[8]; 64 }; 65 66 s8_t lowpan6_get_address_mode(const ip6_addr_t *ip6addr, const struct lowpan6_link_addr *mac_addr); 67 68 #if LWIP_6LOWPAN_IPHC 69 err_t lowpan6_compress_headers(struct netif *netif, u8_t *inbuf, size_t inbuf_size, u8_t *outbuf, size_t outbuf_size, 70 u8_t *lowpan6_header_len_out, u8_t *hidden_header_len_out, ip6_addr_t *lowpan6_contexts, 71 const struct lowpan6_link_addr *src, const struct lowpan6_link_addr *dst); 72 struct pbuf *lowpan6_decompress(struct pbuf *p, u16_t datagram_size, ip6_addr_t *lowpan6_contexts, 73 struct lowpan6_link_addr *src, struct lowpan6_link_addr *dest); 74 #endif /* LWIP_6LOWPAN_IPHC */ 75 76 #ifdef __cplusplus 77 } 78 #endif 79 80 #endif /* LWIP_IPV6 */ 81 82 #endif /* LWIP_HDR_LOWPAN6_COMMON_H */ 83