1 /** 2 * @file 3 * 4 * Neighbor discovery and stateless address autoconfiguration for IPv6. 5 * Aims to be compliant with RFC 4861 (Neighbor discovery) and RFC 4862 6 * (Address autoconfiguration). 7 */ 8 9 /* 10 * Copyright (c) 2010 Inico Technologies Ltd. 11 * All rights reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without modification, 14 * are permitted provided that the following conditions are met: 15 * 16 * 1. Redistributions of source code must retain the above copyright notice, 17 * this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright notice, 19 * this list of conditions and the following disclaimer in the documentation 20 * and/or other materials provided with the distribution. 21 * 3. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 27 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 28 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 29 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 33 * OF SUCH DAMAGE. 34 * 35 * This file is part of the lwIP TCP/IP stack. 36 * 37 * Author: Ivan Delamer <delamer@inicotech.com> 38 * 39 * 40 * Please coordinate changes and requests with Ivan Delamer 41 * <delamer@inicotech.com> 42 */ 43 44 #ifndef LWIP_HDR_ND6_H 45 #define LWIP_HDR_ND6_H 46 47 #include "lwip/opt.h" 48 49 #if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ 50 51 #include "lwip/ip6_addr.h" 52 #include "lwip/err.h" 53 54 #ifdef __cplusplus 55 extern "C" { 56 #endif 57 58 /** 1 second period */ 59 #define ND6_TMR_INTERVAL 1000 60 61 /** Router solicitations are sent in 4 second intervals (see RFC 4861, ch. 6.3.7) */ 62 #ifndef ND6_RTR_SOLICITATION_INTERVAL 63 #define ND6_RTR_SOLICITATION_INTERVAL 4000 64 #endif 65 66 struct pbuf; 67 struct netif; 68 69 void nd6_tmr(void); 70 void nd6_input(struct pbuf *p, struct netif *inp); 71 void nd6_clear_destination_cache(void); 72 struct netif *nd6_find_route(const ip6_addr_t *ip6addr); 73 err_t nd6_get_next_hop_addr_or_queue(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr, const u8_t **hwaddrp); 74 u16_t nd6_get_destination_mtu(const ip6_addr_t *ip6addr, struct netif *netif); 75 #if LWIP_ND6_TCP_REACHABILITY_HINTS 76 void nd6_reachability_hint(const ip6_addr_t *ip6addr); 77 #endif /* LWIP_ND6_TCP_REACHABILITY_HINTS */ 78 void nd6_cleanup_netif(struct netif *netif); 79 #if LWIP_IPV6_MLD 80 void nd6_adjust_mld_membership(struct netif *netif, s8_t addr_idx, u8_t new_state); 81 #endif /* LWIP_IPV6_MLD */ 82 void nd6_restart_netif(struct netif *netif); 83 84 #ifdef LWIP_LOWPOWER 85 u32_t nd6_tmr_tick(void); 86 #endif 87 88 #ifdef __cplusplus 89 } 90 #endif 91 92 #endif /* LWIP_IPV6 */ 93 94 #endif /* LWIP_HDR_ND6_H */ 95