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a1e59e9c01
* update to lwIP-2.1.0rc1: partial SACK support fix #4176 * hash fix * get some flash back due to mistake in conf (fragmentation & reassembly was incorrectly enabled) (ahah I scared you) * add missing include files * update to lwip-2.1.0(release) + remove unused lwIP's include files * lwIP release 2.1.0, SACK is now default, bigger, no-SACK is selectable * fix ldscript * pio * rename 'sack' option to 'feat'ure option, + IP fragmentation/reassembly * merge, fix pio * change internal/hidden string * pio: more lwip2 configuration: + without sack for no change in flash footprint
143 lines
4.1 KiB
C
143 lines
4.1 KiB
C
/**
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* @file
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*
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* Neighbor discovery and stateless address autoconfiguration for IPv6.
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* Aims to be compliant with RFC 4861 (Neighbor discovery) and RFC 4862
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* (Address autoconfiguration).
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*/
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/*
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* Copyright (c) 2010 Inico Technologies Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Ivan Delamer <delamer@inicotech.com>
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*
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*
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* Please coordinate changes and requests with Ivan Delamer
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* <delamer@inicotech.com>
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*/
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#ifndef LWIP_HDR_ND6_PRIV_H
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#define LWIP_HDR_ND6_PRIV_H
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#include "lwip/opt.h"
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#if LWIP_IPV6 /* don't build if not configured for use in lwipopts.h */
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#include "lwip/pbuf.h"
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#include "lwip/ip6_addr.h"
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#include "lwip/netif.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if LWIP_ND6_QUEUEING
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/** struct for queueing outgoing packets for unknown address
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* defined here to be accessed by memp.h
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*/
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struct nd6_q_entry {
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struct nd6_q_entry *next;
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struct pbuf *p;
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};
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#endif /* LWIP_ND6_QUEUEING */
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/** Struct for tables. */
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struct nd6_neighbor_cache_entry {
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ip6_addr_t next_hop_address;
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struct netif *netif;
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u8_t lladdr[NETIF_MAX_HWADDR_LEN];
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/*u32_t pmtu;*/
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#if LWIP_ND6_QUEUEING
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/** Pointer to queue of pending outgoing packets on this entry. */
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struct nd6_q_entry *q;
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#else /* LWIP_ND6_QUEUEING */
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/** Pointer to a single pending outgoing packet on this entry. */
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struct pbuf *q;
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#endif /* LWIP_ND6_QUEUEING */
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u8_t state;
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u8_t isrouter;
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union {
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u32_t reachable_time; /* in seconds */
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u32_t delay_time; /* ticks (ND6_TMR_INTERVAL) */
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u32_t probes_sent;
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u32_t stale_time; /* ticks (ND6_TMR_INTERVAL) */
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} counter;
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};
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struct nd6_destination_cache_entry {
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ip6_addr_t destination_addr;
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ip6_addr_t next_hop_addr;
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u16_t pmtu;
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u32_t age;
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};
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struct nd6_prefix_list_entry {
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ip6_addr_t prefix;
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struct netif *netif;
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u32_t invalidation_timer; /* in seconds */
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};
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struct nd6_router_list_entry {
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struct nd6_neighbor_cache_entry *neighbor_entry;
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u32_t invalidation_timer; /* in seconds */
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u8_t flags;
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};
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enum nd6_neighbor_cache_entry_state {
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ND6_NO_ENTRY = 0,
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ND6_INCOMPLETE,
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ND6_REACHABLE,
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ND6_STALE,
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ND6_DELAY,
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ND6_PROBE
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};
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#define ND6_HOPLIM 255 /* maximum hop limit, required in all ND packets */
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#define ND6_2HRS 7200 /* two hours, expressed in number of seconds */
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/* Router tables. */
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/* @todo make these static? and entries accessible through API? */
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extern struct nd6_neighbor_cache_entry neighbor_cache[];
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extern struct nd6_destination_cache_entry destination_cache[];
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extern struct nd6_prefix_list_entry prefix_list[];
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extern struct nd6_router_list_entry default_router_list[];
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/* Default values, can be updated by a RA message. */
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extern u32_t reachable_time;
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extern u32_t retrans_timer;
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#ifdef __cplusplus
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}
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#endif
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#endif /* LWIP_IPV6 */
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#endif /* LWIP_HDR_ND6_PRIV_H */
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