| /* |
| * Copyright (c) 2006, Swedish Institute of Computer Science. |
| * 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. Neither the name of the Institute nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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 Contiki operating system. |
| * |
| */ |
| |
| /** |
| * \addtogroup uip6 |
| * @{ |
| */ |
| |
| /** |
| * \file |
| * Header file for IPv6 Neighbor discovery (RFC 4861) |
| * \author Julien Abeille <jabeille@cisco.com> |
| * \author Mathilde Durvy <mdurvy@cisco.com> |
| */ |
| |
| #ifndef UIP_ND6_H_ |
| #define UIP_ND6_H_ |
| |
| #include "net/ip/uip.h" |
| #include "sys/stimer.h" |
| /** |
| * \name General |
| * @{ |
| */ |
| /** \brief HOP LIMIT to be used when sending ND messages (255) */ |
| #define UIP_ND6_HOP_LIMIT 255 |
| /** \brief INFINITE lifetime */ |
| #define UIP_ND6_INFINITE_LIFETIME 0xFFFFFFFF |
| /** @} */ |
| |
| /** \name RFC 4861 Host constant */ |
| /** @{ */ |
| #define UIP_ND6_MAX_RTR_SOLICITATION_DELAY 1 |
| #define UIP_ND6_RTR_SOLICITATION_INTERVAL 4 |
| #define UIP_ND6_MAX_RTR_SOLICITATIONS 3 |
| /** @} */ |
| |
| /** \name RFC 4861 Router constants */ |
| /** @{ */ |
| #ifndef UIP_CONF_ND6_SEND_RA |
| #define UIP_ND6_SEND_RA 1 /* enable/disable RA sending */ |
| #else |
| #define UIP_ND6_SEND_RA UIP_CONF_ND6_SEND_RA |
| #endif |
| #ifndef UIP_CONF_ND6_SEND_NA |
| #define UIP_ND6_SEND_NA 1 /* enable/disable NA sending */ |
| #else |
| #define UIP_ND6_SEND_NA UIP_CONF_ND6_SEND_NA |
| #endif |
| #ifndef UIP_CONF_ND6_MAX_RA_INTERVAL |
| #define UIP_ND6_MAX_RA_INTERVAL 600 |
| #else |
| #define UIP_ND6_MAX_RA_INTERVAL UIP_CONF_ND6_MAX_RA_INTERVAL |
| #endif |
| #ifndef UIP_CONF_ND6_MIN_RA_INTERVAL |
| #define UIP_ND6_MIN_RA_INTERVAL (UIP_ND6_MAX_RA_INTERVAL / 3) |
| #else |
| #define UIP_ND6_MIN_RA_INTERVAL UIP_CONF_ND6_MIN_RA_INTERVAL |
| #endif |
| #define UIP_ND6_M_FLAG 0 |
| #define UIP_ND6_O_FLAG (UIP_ND6_RA_RDNSS || UIP_ND6_RA_DNSSL) |
| #define UIP_ND6_ROUTER_LIFETIME 3 * UIP_ND6_MAX_RA_INTERVAL |
| |
| #define UIP_ND6_MAX_INITIAL_RA_INTERVAL 16 /*seconds*/ |
| #define UIP_ND6_MAX_INITIAL_RAS 3 /*transmissions*/ |
| #ifndef UIP_CONF_ND6_MIN_DELAY_BETWEEN_RAS |
| #define UIP_ND6_MIN_DELAY_BETWEEN_RAS 3 /*seconds*/ |
| #else |
| #define UIP_ND6_MIN_DELAY_BETWEEN_RAS UIP_CONF_ND6_MIN_DELAY_BETWEEN_RAS |
| #endif |
| //#define UIP_ND6_MAX_RA_DELAY_TIME 0.5 /*seconds*/ |
| #define UIP_ND6_MAX_RA_DELAY_TIME_MS 500 /*milli seconds*/ |
| /** @} */ |
| |
| #ifndef UIP_CONF_ND6_DEF_MAXDADNS |
| /** \brief Do not try DAD when using EUI-64 as allowed by draft-ietf-6lowpan-nd-15 section 8.2 */ |
| #if UIP_CONF_LL_802154 |
| #define UIP_ND6_DEF_MAXDADNS 0 |
| #else /* UIP_CONF_LL_802154 */ |
| #define UIP_ND6_DEF_MAXDADNS UIP_ND6_SEND_NA |
| #endif /* UIP_CONF_LL_802154 */ |
| #else /* UIP_CONF_ND6_DEF_MAXDADNS */ |
| #define UIP_ND6_DEF_MAXDADNS UIP_CONF_ND6_DEF_MAXDADNS |
| #endif /* UIP_CONF_ND6_DEF_MAXDADNS */ |
| |
| /** \name RFC 4861 Node constant */ |
| #define UIP_ND6_MAX_MULTICAST_SOLICIT 3 |
| |
| #ifdef UIP_CONF_ND6_MAX_UNICAST_SOLICIT |
| #define UIP_ND6_MAX_UNICAST_SOLICIT UIP_CONF_ND6_MAX_UNICAST_SOLICIT |
| #else /* UIP_CONF_ND6_MAX_UNICAST_SOLICIT */ |
| #define UIP_ND6_MAX_UNICAST_SOLICIT 3 |
| #endif /* UIP_CONF_ND6_MAX_UNICAST_SOLICIT */ |
| |
| #ifdef UIP_CONF_ND6_REACHABLE_TIME |
| #define UIP_ND6_REACHABLE_TIME UIP_CONF_ND6_REACHABLE_TIME |
| #else |
| #define UIP_ND6_REACHABLE_TIME 30000 |
| #endif |
| |
| #ifdef UIP_CONF_ND6_RETRANS_TIMER |
| #define UIP_ND6_RETRANS_TIMER UIP_CONF_ND6_RETRANS_TIMER |
| #else |
| #define UIP_ND6_RETRANS_TIMER 1000 |
| #endif |
| |
| #define UIP_ND6_DELAY_FIRST_PROBE_TIME 5 |
| #define UIP_ND6_MIN_RANDOM_FACTOR(x) (x / 2) |
| #define UIP_ND6_MAX_RANDOM_FACTOR(x) ((x) + (x) / 2) |
| /** @} */ |
| |
| |
| /** \name RFC 6106 RA DNS Options Constants */ |
| /** @{ */ |
| #ifndef UIP_CONF_ND6_RA_RDNSS |
| #define UIP_ND6_RA_RDNSS 0 |
| #else |
| #define UIP_ND6_RA_RDNSS UIP_CONF_ND6_RA_RDNSS |
| #endif |
| |
| #ifndef UIP_CONF_ND6_RA_DNSSL |
| #define UIP_ND6_RA_DNSSL 0 |
| #else |
| #error Not implemented |
| #define UIP_ND6_RA_DNSSL UIP_CONF_ND6_RA_DNSSL |
| #endif |
| /** @} */ |
| |
| |
| /** \name ND6 option types */ |
| /** @{ */ |
| #define UIP_ND6_OPT_SLLAO 1 |
| #define UIP_ND6_OPT_TLLAO 2 |
| #define UIP_ND6_OPT_PREFIX_INFO 3 |
| #define UIP_ND6_OPT_REDIRECTED_HDR 4 |
| #define UIP_ND6_OPT_MTU 5 |
| #define UIP_ND6_OPT_RDNSS 25 |
| #define UIP_ND6_OPT_DNSSL 31 |
| /** @} */ |
| |
| /** \name ND6 option types */ |
| /** @{ */ |
| #define UIP_ND6_OPT_TYPE_OFFSET 0 |
| #define UIP_ND6_OPT_LEN_OFFSET 1 |
| #define UIP_ND6_OPT_DATA_OFFSET 2 |
| |
| /** \name ND6 message length (excluding options) */ |
| /** @{ */ |
| #define UIP_ND6_NA_LEN 20 |
| #define UIP_ND6_NS_LEN 20 |
| #define UIP_ND6_RA_LEN 12 |
| #define UIP_ND6_RS_LEN 4 |
| /** @} */ |
| |
| |
| /** \name ND6 option length in bytes */ |
| /** @{ */ |
| #define UIP_ND6_OPT_HDR_LEN 2 |
| #define UIP_ND6_OPT_PREFIX_INFO_LEN 32 |
| #define UIP_ND6_OPT_MTU_LEN 8 |
| #define UIP_ND6_OPT_RDNSS_LEN 1 |
| #define UIP_ND6_OPT_DNSSL_LEN 1 |
| |
| |
| /* Length of TLLAO and SLLAO options, it is L2 dependant */ |
| #if UIP_CONF_LL_802154 |
| /* If the interface is 802.15.4. For now we use only long addresses */ |
| #define UIP_ND6_OPT_SHORT_LLAO_LEN 8 |
| #define UIP_ND6_OPT_LONG_LLAO_LEN 16 |
| /** \brief length of a ND6 LLAO option for 802.15.4 */ |
| #define UIP_ND6_OPT_LLAO_LEN UIP_ND6_OPT_LONG_LLAO_LEN |
| #else /*UIP_CONF_LL_802154*/ |
| #if UIP_CONF_LL_80211 |
| /* If the interface is 802.11 */ |
| /** \brief length of a ND6 LLAO option for 802.11 */ |
| #define UIP_ND6_OPT_LLAO_LEN 8 |
| #else /*UIP_CONF_LL_80211*/ |
| /** \brief length of a ND6 LLAO option for default L2 type (e.g. Ethernet) */ |
| #define UIP_ND6_OPT_LLAO_LEN 8 |
| #endif /*UIP_CONF_LL_80211*/ |
| #endif /*UIP_CONF_LL_802154*/ |
| /** @} */ |
| |
| |
| /** \name Neighbor Advertisement flags masks */ |
| /** @{ */ |
| #define UIP_ND6_NA_FLAG_ROUTER 0x80 |
| #define UIP_ND6_NA_FLAG_SOLICITED 0x40 |
| #define UIP_ND6_NA_FLAG_OVERRIDE 0x20 |
| #define UIP_ND6_RA_FLAG_ONLINK 0x80 |
| #define UIP_ND6_RA_FLAG_AUTONOMOUS 0x40 |
| /** @} */ |
| |
| /** |
| * \name ND message structures |
| * @{ |
| */ |
| |
| /** |
| * \brief A neighbor solicitation constant part |
| * |
| * Possible option is: SLLAO |
| */ |
| typedef struct uip_nd6_ns { |
| uint32_t reserved; |
| uip_ipaddr_t tgtipaddr; |
| } uip_nd6_ns; |
| |
| /** |
| * \brief A neighbor advertisement constant part. |
| * |
| * Possible option is: TLLAO |
| */ |
| typedef struct uip_nd6_na { |
| uint8_t flagsreserved; |
| uint8_t reserved[3]; |
| uip_ipaddr_t tgtipaddr; |
| } uip_nd6_na; |
| |
| /** |
| * \brief A router solicitation constant part |
| * |
| * Possible option is: SLLAO |
| */ |
| typedef struct uip_nd6_rs { |
| uint32_t reserved; |
| } uip_nd6_rs; |
| |
| /** |
| * \brief A router advertisement constant part |
| * |
| * Possible options are: SLLAO, MTU, Prefix Information |
| */ |
| typedef struct uip_nd6_ra { |
| uint8_t cur_ttl; |
| uint8_t flags_reserved; |
| uint16_t router_lifetime; |
| uint32_t reachable_time; |
| uint32_t retrans_timer; |
| } uip_nd6_ra; |
| |
| /** |
| * \brief A redirect message constant part |
| * |
| * Possible options are: TLLAO, redirected header |
| */ |
| typedef struct uip_nd6_redirect { |
| uint32_t reserved; |
| uip_ipaddr_t tgtipaddress; |
| uip_ipaddr_t destipaddress; |
| } uip_nd6_redirect; |
| /** @} */ |
| |
| /** |
| * \name ND Option structures |
| * @{ |
| */ |
| |
| /** \brief ND option header */ |
| typedef struct uip_nd6_opt_hdr { |
| uint8_t type; |
| uint8_t len; |
| } uip_nd6_opt_hdr; |
| |
| /** \brief ND option prefix information */ |
| typedef struct uip_nd6_opt_prefix_info { |
| uint8_t type; |
| uint8_t len; |
| uint8_t preflen; |
| uint8_t flagsreserved1; |
| uint32_t validlt; |
| uint32_t preferredlt; |
| uint32_t reserved2; |
| uip_ipaddr_t prefix; |
| } uip_nd6_opt_prefix_info ; |
| |
| /** \brief ND option MTU */ |
| typedef struct uip_nd6_opt_mtu { |
| uint8_t type; |
| uint8_t len; |
| uint16_t reserved; |
| uint32_t mtu; |
| } uip_nd6_opt_mtu; |
| |
| /** \brief ND option RDNSS */ |
| typedef struct uip_nd6_opt_dns { |
| uint8_t type; |
| uint8_t len; |
| uint16_t reserved; |
| uint32_t lifetime; |
| uip_ipaddr_t ip; |
| } uip_nd6_opt_dns; |
| |
| /** \struct Redirected header option */ |
| typedef struct uip_nd6_opt_redirected_hdr { |
| uint8_t type; |
| uint8_t len; |
| uint8_t reserved[6]; |
| } uip_nd6_opt_redirected_hdr; |
| /** @} */ |
| |
| /** |
| * \name ND Messages Processing and Generation |
| * @{ |
| */ |
| /** |
| * \brief Process a neighbor solicitation |
| * |
| * The NS can be received in 3 cases (procedures): |
| * - sender is performing DAD (ip src = unspecified, no SLLAO option) |
| * - sender is performing NUD (ip dst = unicast) |
| * - sender is performing address resolution (ip dest = solicited node mcast |
| * address) |
| * |
| * We do: |
| * - if the tgt belongs to me, reply, otherwise ignore |
| * - if i was performing DAD for the same address, two cases: |
| * -- I already sent a NS, hence I win |
| * -- I did not send a NS yet, hence I lose |
| * |
| * If we need to send a NA in response (i.e. the NS was done for NUD, or |
| * address resolution, or DAD and there is a conflict), we do it in this |
| * function: set src, dst, tgt address in the three cases, then for all cases |
| * set the rest, including SLLAO |
| * |
| */ |
| void |
| uip_nd6_ns_input(void); |
| |
| /** |
| * \brief Send a neighbor solicitation, send a Neighbor Advertisement |
| * \param src pointer to the src of the NS if known |
| * \param dest pointer to ip address to send the NS, for DAD or ADDR Resol, |
| * MUST be NULL, for NUD, must be correct unicast dest |
| * \param tgt pointer to ip address to fill the target address field, must |
| * not be NULL |
| * |
| * - RFC 4861, 7.2.2 : |
| * "If the source address of the packet prompting the solicitation is the |
| * same as one of the addresses assigned to the outgoing interface, that |
| * address SHOULD be placed in the IP Source Address of the outgoing |
| * solicitation. Otherwise, any one of the addresses assigned to the |
| * interface should be used." |
| * This is why we have a src ip address as argument. If NULL, we will do |
| * src address selection, otherwise we use the argument. |
| * |
| * - we check if it is a NS for Address resolution or NUD, if yes we include |
| * a SLLAO option, otherwise no. |
| */ |
| void |
| uip_nd6_ns_output(uip_ipaddr_t *src, uip_ipaddr_t *dest, uip_ipaddr_t *tgt); |
| |
| #if UIP_CONF_ROUTER |
| #if UIP_ND6_SEND_RA |
| /** |
| * \brief send a Router Advertisement |
| * |
| * Only for router, for periodic as well as sollicited RA |
| */ |
| void uip_nd6_ra_output(uip_ipaddr_t *dest); |
| #endif /* UIP_ND6_SEND_RA */ |
| #endif /*UIP_CONF_ROUTER*/ |
| |
| /** |
| * \brief Send a Router Solicitation |
| * |
| * src is chosen through the uip_netif_select_src function. If src is |
| * unspecified (i.e. we do not have a preferred address yet), then we do not |
| * put a SLLAO option (MUST NOT in RFC 4861). Otherwise we do. |
| * |
| * RS message format, |
| * possible option is SLLAO, MUST NOT be included if source = unspecified |
| * SHOULD be included otherwise |
| */ |
| void uip_nd6_rs_output(void); |
| |
| /** |
| * \brief Initialise the uIP ND core |
| */ |
| void uip_nd6_init(void); |
| /** @} */ |
| |
| |
| void |
| uip_appserver_addr_get(uip_ipaddr_t *ipaddr); |
| /*--------------------------------------*/ |
| /******* ANNEX - message formats ********/ |
| /*--------------------------------------*/ |
| |
| /* |
| * RS format. possible option is SLLAO |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Code | Checksum | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Reserved | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Options ... |
| * +-+-+-+-+-+-+-+-+-+-+-+- |
| * |
| * |
| * RA format. possible options: prefix information, MTU, SLLAO |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Code | Checksum | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Cur Hop Limit |M|O| Reserved | Router Lifetime | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Reachable Time | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Retrans Timer | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Options ... |
| * +-+-+-+-+-+-+-+-+-+-+-+- |
| * |
| * |
| * NS format: options should be SLLAO |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Code | Checksum | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Reserved | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | | |
| * + + |
| * | | |
| * + Target Address + |
| * | | |
| * + + |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Options ... |
| * +-+-+-+-+-+-+-+-+-+-+-+- |
| * |
| * |
| * NA message format. possible options is TLLAO |
| * |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Code | Checksum | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |R|S|O| Reserved | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | | |
| * + + |
| * | | |
| * + Target Address + |
| * | | |
| * + + |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Options ... |
| * +-+-+-+-+-+-+-+-+-+-+-+- |
| * |
| * |
| * Redirect message format. Possible options are TLLAO and Redirected header |
| * |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Code | Checksum | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Reserved | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | | |
| * + + |
| * | | |
| * + Target Address + |
| * | | |
| * + + |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | | |
| * + + |
| * | | |
| * + Destination Address + |
| * | | |
| * + + |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Options ... |
| * +-+-+-+-+-+-+-+-+-+-+-+- |
| * |
| * |
| * SLLAO/TLLAO option: |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Length | Link-Layer Address ... |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |
| * |
| * Prefix information option |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Length | Prefix Length |L|A| Reserved1 | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Valid Lifetime | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Preferred Lifetime | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Reserved2 | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | | |
| * + + |
| * | | |
| * + Prefix + |
| * | | |
| * + + |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |
| * |
| * MTU option |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Length | Reserved | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | MTU | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |
| * |
| * Redirected header option |
| * |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Type | Length | Reserved | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Reserved | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | | |
| * ~ IP header + data ~ |
| * | | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |
| */ |
| #endif /* UIP_ND6_H_ */ |
| |
| /** @} */ |
