| /** |
| * @file |
| * |
| * Neighbor discovery and stateless address autoconfiguration for IPv6. |
| * Aims to be compliant with RFC 4861 (Neighbor discovery) and RFC 4862 |
| * (Address autoconfiguration). |
| */ |
| |
| /* |
| * Copyright (c) 2010 Inico Technologies Ltd. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without modification, |
| * are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
| * OF SUCH DAMAGE. |
| * |
| * This file is part of the lwIP TCP/IP stack. |
| * |
| * Author: Ivan Delamer <delamer@inicotech.com> |
| * |
| * |
| * Please coordinate changes and requests with Ivan Delamer |
| * <delamer@inicotech.com> |
| */ |
| |
| #ifndef LWIP_HDR_ND6_PRIV_H |
| #define LWIP_HDR_ND6_PRIV_H |
| |
| #include "lwip/opt.h" |
| |
| #if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */ |
| |
| #include "lwip/pbuf.h" |
| #include "lwip/ip6_addr.h" |
| #include "lwip/netif.h" |
| |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #if LWIP_ND6_QUEUEING |
| /** struct for queueing outgoing packets for unknown address |
| * defined here to be accessed by memp.h |
| */ |
| struct nd6_q_entry { |
| struct nd6_q_entry *next; |
| struct pbuf *p; |
| }; |
| #endif /* LWIP_ND6_QUEUEING */ |
| |
| /** Struct for tables. */ |
| struct nd6_neighbor_cache_entry { |
| ip6_addr_t next_hop_address; |
| struct netif *netif; |
| u8_t lladdr[NETIF_MAX_HWADDR_LEN]; |
| /*u32_t pmtu;*/ |
| #if LWIP_ND6_QUEUEING |
| /** Pointer to queue of pending outgoing packets on this entry. */ |
| struct nd6_q_entry *q; |
| #else /* LWIP_ND6_QUEUEING */ |
| /** Pointer to a single pending outgoing packet on this entry. */ |
| struct pbuf *q; |
| #endif /* LWIP_ND6_QUEUEING */ |
| u8_t state; |
| u8_t isrouter; |
| union { |
| u32_t reachable_time; /* in seconds */ |
| u32_t delay_time; /* ticks (ND6_TMR_INTERVAL) */ |
| u32_t probes_sent; |
| u32_t stale_time; /* ticks (ND6_TMR_INTERVAL) */ |
| } counter; |
| }; |
| |
| struct nd6_destination_cache_entry { |
| ip6_addr_t destination_addr; |
| ip6_addr_t next_hop_addr; |
| u16_t pmtu; |
| u32_t age; |
| }; |
| |
| struct nd6_prefix_list_entry { |
| ip6_addr_t prefix; |
| struct netif *netif; |
| u32_t invalidation_timer; /* in seconds */ |
| }; |
| |
| struct nd6_router_list_entry { |
| struct nd6_neighbor_cache_entry *neighbor_entry; |
| u32_t invalidation_timer; /* in seconds */ |
| u8_t flags; |
| }; |
| |
| enum nd6_neighbor_cache_entry_state { |
| ND6_NO_ENTRY = 0, |
| ND6_INCOMPLETE, |
| ND6_REACHABLE, |
| ND6_STALE, |
| ND6_DELAY, |
| ND6_PROBE |
| }; |
| |
| #define ND6_HOPLIM 255 /* maximum hop limit, required in all ND packets */ |
| |
| #define ND6_2HRS 7200 /* two hours, expressed in number of seconds */ |
| |
| /* Router tables. */ |
| /* @todo make these static? and entries accessible through API? */ |
| extern struct nd6_neighbor_cache_entry neighbor_cache[]; |
| extern struct nd6_destination_cache_entry destination_cache[]; |
| extern struct nd6_prefix_list_entry prefix_list[]; |
| extern struct nd6_router_list_entry default_router_list[]; |
| |
| /* Default values, can be updated by a RA message. */ |
| extern u32_t reachable_time; |
| extern u32_t retrans_timer; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* LWIP_IPV6 */ |
| |
| #endif /* LWIP_HDR_ND6_PRIV_H */ |