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RIOT/sys/net/sixlowpan/sixlownd.h

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/*
* 6lowpan neighbor discovery
*
* Copyright (C) 2013 INRIA.
*
* This file subject to the terms and conditions of the GNU Lesser General
* Public License. See the file LICENSE in the top level directory for more
* details.
*
* @ingroup sixlowpan
* @{
* @file sixlownd.h
* @brief 6lowpan neighbor discovery constants, data structs, and prototypes
* @author Stephan Zeisberg <zeisberg@mi.fu-berlin.de>
* @author Martin Lenders <mlenders@inf.fu-berlin.de>
* @author Oliver Gesch <oliver.gesch@googlemail.com>
* @}
*/
#ifndef SIXLOWND_H
#define SIXLOWND_H
#include <stdint.h>
#include "vtimer.h"
#include "sixlowpan.h"
#include "sixlowip.h"
/* parameter problem [rfc4443] */
#define PARA_PROB_LEN (8)
#define PARA_PROB_CODE_ERR (0) /* Erroneous header field encountered */
#define PARA_PROB_NXT_HDR_UNREC (1) /* Unrecognized Next Header type encountered */
#define PARA_PROB_IPV6_OPT_UNREC (2) /* Unrecognized IPv6 option encountered */
/* router solicitation */
#define RTR_SOL_LEN (4)
#define RTR_SOL_INTERVAL (4)
#define RTR_SOL_MAX (3)
/* router advertisment */
#define RTR_ADV_M_FLAG (0)
#define RTR_ADV_O_FLAG (0)
#define RTR_ADV_MAX (3)
#define RTR_ADV_MAX_INTERVAL (600)
#define RTR_ADV_LEN (12)
/* neighbour solicitation */
#define NBR_SOL_LEN (20)
/* neighbour advertisement */
#define NBR_ADV_LEN (20)
#define NBR_ADV_FLAG_R (0x80)
#define NBR_ADV_FLAG_S (0x40)
#define NBR_ADV_FLAG_O (0x20)
/* stllao option rfc4861 4.6.1 */
#define OPT_STLLAO_MIN_LEN (8)
#define OPT_STLLAO_MAX_LEN (16)
#define OPT_SLLAO_TYPE (1)
#define OPT_TLLAO_TYPE (2)
/* prefix info option rfc 4.6.2 */
#define OPT_PI_LIST_LEN (5) //TODO: initalwert suchen
#define OPT_PI_TYPE (3)
#define OPT_PI_LEN (4)
#define OPT_PI_HDR_LEN (32)
#define OPT_PI_FLAG_A (0x40)
#define OPT_PI_FLAG_L (0x80)
#define OPT_PI_VLIFETIME_INFINITE (0xffffffff)
/* mtu option rfc4861 4.6.4 */
#define OPT_MTU_TYPE (5)
#define OPT_MTU_LEN (1)
#define OPT_MTU_HDR_LEN (8)
/* aro - address registration option draft-ietf-6lowpan-nd-14 4.2 */
#define OPT_ARO_TYPE (31) /* TBD1 */
#define OPT_ARO_LEN (2)
#define OPT_ARO_HDR_LEN (16)
#define OPT_ARO_LTIME (300) /* geeigneten wert finden */
#define OPT_ARO_STATE_SUCCESS (0)
#define OPT_ARO_STATE_DUP_ADDR (1)
#define OPT_ARO_STATE_NBR_CACHE_FULL (2)
/* 6lowpan context option */
#define OPT_6CO_TYPE (32)
#define OPT_6CO_MIN_LEN (2)
#define OPT_6CO_MAX_LEN (3)
#define OPT_6CO_HDR_LEN (8)
#define OPT_6CO_LTIME (5) /* geeigneten Wert finden */
#define OPT_6CO_FLAG_C (0x10)
#define OPT_6CO_FLAG_CID (0x0F)
#define OPT_6CO_FLAG_C_VALUE_SET (1)
#define OPT_6CO_FLAG_C_VALUE_UNSET (0)
/* authoritative border router option */
#define OPT_ABRO_TYPE (33)
#define OPT_ABRO_LEN (3)
#define OPT_ABRO_HDR_LEN (24)
/* authoritive border router cache size */
#define ABR_CACHE_SIZE (2)
/* neighbor cache size */
#define NBR_CACHE_SIZE (8)
#define NBR_CACHE_TYPE_GC (1)
#define NBR_CACHE_TYPE_REG (2)
#define NBR_CACHE_TYPE_TEN (3)
#define NBR_CACHE_LTIME_TEN (20)
/* neighbor status values */
#define NBR_STATUS_INCOMPLETE (0)
#define NBR_STATUS_REACHABLE (1)
#define NBR_STATUS_STALE (2)
#define NBR_STATUS_DELAY (3)
#define NBR_STATUS_PROBE (4)
/* default router list size */
#define DEF_RTR_LST_SIZE (3) /* geeigneten wert finden */
extern unsigned int nd_nbr_cache_rem_pid;
enum option_types_t {
OPT_SLLAO = 1,
OPT_TLLAO,
OPT_PI,
OPT_MTU,
OPT_ARO,
OPT_6CO,
OPT_ABRO,
OPT_DAR,
OPT_DAC,
};
typedef struct __attribute__((packed)) {
uint8_t type;
uint8_t length;
} opt_buf_t;
typedef struct __attribute__((packed)) {
uint8_t type;
uint8_t length;
} opt_stllao_t;
typedef struct __attribute__((packed)) {
uint8_t type;
uint8_t length;
uint16_t reserved;
uint32_t mtu;
} opt_mtu_t;
typedef struct __attribute__((packed)) {
uint8_t type;
uint8_t length;
uint8_t prefix_length;
uint8_t l_a_reserved1;
uint32_t val_ltime;
uint32_t pref_ltime;
uint32_t reserved2;
ipv6_addr_t addr;
} opt_pi_t;
typedef struct __attribute__((packed)) {
uint8_t type;
uint8_t length;
uint8_t status;
uint8_t reserved1;
uint16_t reserved2;
uint16_t reg_ltime;
ieee_802154_long_t eui64;
} opt_aro_t;
typedef struct __attribute__((packed)) {
uint8_t type;
uint8_t length;
uint8_t c_length;
uint8_t c_flags;
uint16_t reserved;
uint16_t val_ltime;
} opt_6co_hdr_t;
typedef struct __attribute__((packed)) {
uint8_t type;
uint8_t length;
uint16_t version;
uint32_t reserved;
ipv6_addr_t addr;
} opt_abro_t;
typedef struct __attribute__((packed)) {
uint8_t inuse;
uint8_t adv;
ipv6_addr_t addr;
uint8_t length;
uint8_t l_a_reserved1;
uint32_t val_ltime;
uint32_t pref_ltime;
uint8_t infinite;
} plist_t;
struct __attribute__((packed)) rtr_adv_t {
uint8_t hoplimit;
uint8_t autoconfig_flags;
uint16_t router_lifetime;
uint32_t reachable_time;
uint32_t retrans_timer;
};
struct __attribute__((packed)) nbr_sol_t {
uint32_t reserved;
ipv6_addr_t tgtaddr;
};
struct __attribute__((packed)) nbr_adv_t {
uint8_t rso;
uint8_t reserved[3];
ipv6_addr_t tgtaddr;
};
struct __attribute__((packed)) para_prob_t {
uint8_t pointer;
};
/* authoritive border router cache - draft-draft-ietf-6lowpan-nd-17 */
typedef struct __attribute__((packed)) abr_cache_t {
uint16_t version;
ipv6_addr_t abr_addr;
uint8_t cids[LOWPAN_CONTEXT_MAX];
} abr_cache_t;
/* neighbor cache - rfc4861 5.1. */
typedef struct __attribute__((packed)) {
uint8_t type;
uint8_t state;
uint8_t isrouter;
ipv6_addr_t addr;
ieee_802154_long_t laddr;
ieee_802154_short_t saddr;
timex_t ltime;
} nbr_cache_t;
/* default router list - rfc4861 5.1. */
typedef struct __attribute__((packed)) {
ipv6_addr_t addr;
timex_t inval_time;
} def_rtr_lst_t;
void init_rtr_sol(uint8_t sllao);
void recv_rtr_sol(void);
void recv_rtr_adv(void);
void init_rtr_adv(ipv6_addr_t *addr, uint8_t sllao, uint8_t mtu, uint8_t pi,
uint8_t sixco, uint8_t abro);
uint8_t plist_search(ipv6_addr_t *addr);
uint8_t plist_cmp(ipv6_addr_t *addr1, ipv6_addr_t *addr2);
int8_t plist_add(ipv6_addr_t *addr, uint8_t size, uint32_t val_ltime,
uint32_t pref_ltime, uint8_t adv_opt, uint8_t l_a_reserved1);
void set_llao(opt_stllao_t *sllao, uint8_t type, uint8_t length);
abr_cache_t *abr_get_version(uint16_t version, ipv6_addr_t *abr_addr);
abr_cache_t *abr_add_context(uint16_t version, ipv6_addr_t *abr_addr,
uint8_t cid);
void abr_remove_context(uint8_t cid);
nbr_cache_t *nbr_cache_search(ipv6_addr_t *ipaddr);
uint8_t nbr_cache_add(ipv6_addr_t *ipaddr, ieee_802154_long_t *laddr,
uint8_t isrouter, uint8_t state, uint8_t type,
uint16_t ltime, ieee_802154_short_t *saddr);
void nbr_cache_auto_rem(void);
void nbr_cache_rem(ipv6_addr_t *addr);
uint16_t icmpv6_csum(uint8_t proto);
def_rtr_lst_t *def_rtr_lst_search(ipv6_addr_t *ipaddr);
void def_rtr_lst_add(ipv6_addr_t *ipaddr, uint32_t rtr_ltime);
void def_rtr_lst_rem(def_rtr_lst_t *entry);
void init_para_prob(ipv6_addr_t *src, ipv6_addr_t *dest, uint8_t code,
uint32_t pointer, uint8_t *packet, uint8_t packet_len);
void init_nbr_sol(ipv6_addr_t *src, ipv6_addr_t *dest, ipv6_addr_t *targ,
uint8_t slloa, uint8_t aro);
void init_nbr_adv(ipv6_addr_t *src, ipv6_addr_t *dst, ipv6_addr_t *tgt,
uint8_t rso, uint8_t sllao, uint8_t aro, uint8_t aro_state);
void recv_nbr_adv(void);
void recv_nbr_sol(void);
#endif /* SIXLOWND_H*/
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