1 /** 2 * @file 3 * 4 * 6LowPAN output 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_H 43 #define LWIP_HDR_LOWPAN6_H 44 45 #include "netif/lowpan6_opts.h" 46 47 #if LWIP_IPV6 && LWIP_6LOWPAN /* don't build if not configured for use in lwipopts.h */ 48 49 #include "lwip/pbuf.h" 50 #include "lwip/ip.h" 51 #include "lwip/ip_addr.h" 52 #include "lwip/netif.h" 53 #if defined (__cplusplus) && __cplusplus 54 extern "C" { 55 #endif 56 57 /* 58 * 6lowpan context identifier information need to be dessiminated to the nodes 59 * in the LLNs using some upper layer protocols. For example The 6LoWPAN Context Option (6CO) 60 * suggested in the RFC 6775 (ND Optimization for 6LoWPANs). So the below 61 * data structure can be used to store the context information . 62 */ 63 struct lowpan6_context_info { 64 ip6_addr_t context_prefix; 65 /* 66 * Its basically the netif that added the lowpan context 67 * currently it doesn't have much use . Added for future purpose 68 */ 69 void *iface; 70 u8_t context_id; 71 u8_t is_used; 72 }; 73 74 /** 1 second period */ 75 #define LOWPAN6_TMR_INTERVAL 1000 76 77 /* As per RFC 4944 The reassembly timeout MUST be set to a maximum of 60 seconds */ 78 #define LOWPAN6_REASS_TIMEOUT 60 79 80 void lowpan6_tmr(void); 81 #if LWIP_LOWPOWER 82 u32_t lowpan6_tmr_tick(void); 83 #endif 84 85 err_t lowpan6_set_context(struct netif *hwface, u8_t index, const ip6_addr_t *context); 86 err_t lowpan6_remove_context(struct netif *hwface, u8_t ctxid); 87 err_t lowpan6_set_short_addr(u8_t addr_high, u8_t addr_low); 88 89 #if LWIP_IPV4 90 err_t lowpan4_output(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr); 91 #endif /* LWIP_IPV4 */ 92 err_t lowpan6_output(struct netif *netif, struct pbuf *q, const struct linklayer_addr *dstlinkaddr); 93 94 err_t lowpan6_input(struct pbuf *p, struct netif *netif, 95 const struct linklayer_addr *sendermac, 96 const struct linklayer_addr *recvrmac); 97 98 err_t lowpan6_if_init(struct netif *netif); 99 100 /* pan_id in network byte order. */ 101 err_t lowpan6_set_pan_id(u16_t pan_id); 102 103 #if !NO_SYS 104 err_t tcpip_6lowpan_input(struct pbuf *p, struct netif *inp); 105 #endif /* !NO_SYS */ 106 void lowpan6_free_reass_context(struct netif *netif); 107 108 #if defined (__cplusplus) && __cplusplus 109 } 110 #endif 111 112 #endif /* LWIP_IPV6 && LWIP_6LOWPAN */ 113 114 #endif /* LWIP_HDR_LOWPAN6_H */ 115