nd6_priv.h

Go to the documentation of this file.

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * 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 nd6_q_entry {
  struct nd6_q_entry *next;
  struct pbuf *p;
};
#endif /* LWIP_ND6_QUEUEING */

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

  struct nd6_q_entry *q;
#else /* LWIP_ND6_QUEUEING */

  struct pbuf *q;
#endif /* LWIP_ND6_QUEUEING */
  u8_t state;
  u8_t isrouter;
  union {
    u32_t reachable_time; /* in ms since value may originate from network packet */
    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 ms since value may originate from network packet */
#if LWIP_IPV6_AUTOCONFIG
  u8_t flags;
#define ND6_PREFIX_AUTOCONFIG_AUTONOMOUS 0x01
#define ND6_PREFIX_AUTOCONFIG_ADDRESS_GENERATED 0x02
#define ND6_PREFIX_AUTOCONFIG_ADDRESS_DUPLICATE 0x04
#endif /* LWIP_IPV6_AUTOCONFIG */
};

struct nd6_router_list_entry {
  struct nd6_neighbor_cache_entry *neighbor_entry;
  u32_t invalidation_timer; /* in ms since value may originate from network packet */
  u8_t flags;
};

enum nd6_neighbor_cache_entry_state {
  ND6_NO_ENTRY = 0,
  ND6_INCOMPLETE,
  ND6_REACHABLE,
  ND6_STALE,
  ND6_DELAY,
  ND6_PROBE
};

/* 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 */