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109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
#include <stdint.h>
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/* router solicitation */
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#define RTR_SOL_LEN 4
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#define RTR_SOL_INTERVAL 4
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#define RTR_SOL_MAX 3
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/* router advertisment */
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#define RTR_ADV_M_FLAG 0
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#define RTR_ADV_O_FLAG 0
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#define RTR_ADV_MAX 3
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#define RTR_ADV_MAX_INTERVAL 600
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#define RTR_ADV_LEN 12
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/* neighbour solicitation */
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#define NBR_SOL_LEN 20
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/* neighbour advertisement */
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#define NBR_ADV_LEN 20
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/* icmp message types rfc4861 4.*/
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#define ICMP_RTR_ADV 134
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#define ICMP_RTR_SOL 133
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#define ICMP_NBR_ADV 136
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#define ICMP_NBR_SOL 135
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/* stllao option rfc4861 4.6.1 */
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#define OPT_STLLAO_LEN 16
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#define OPT_SLLAO_TYPE 1
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#define OPT_TLLAO_TYPE 2
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/* prefix info option rfc 4.6.2 */
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#define OPT_PI_LIST_LEN 5 //TODO: initalwert suchen
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#define OPT_PI_TYPE 3
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#define OPT_PI_LEN 4
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#define OPT_PI_HDR_LEN 32
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/* mtu option rfc4861 4.6.4 */
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#define OPT_MTU_TYPE 5
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#define OPT_MTU_LEN 1
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#define OPT_MTU_HDR_LEN 8
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/* aro - address registration option draft-ietf-6lowpan-nd-14 4.2 */
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#define OPT_ARO_TYPE 31 // TBD1
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#define OPT_ARO_LEN 2
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#define OPT_ARO_HDR_LEN 16
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#define OPT_ARO_LTIME 300 // geeigneten wert finden
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typedef struct __attribute__ ((packed)) opt_stllao_t {
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uint8_t type;
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uint8_t length;
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} opt_stllao_t;
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typedef struct __attribute__ ((packed)) opt_mtu_t {
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uint8_t type;
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uint8_t length;
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uint16_t reserved;
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uint32_t mtu;
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} opt_mtu_t;
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typedef struct __attribute__ ((packed)) opt_pi_t {
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uint8_t type;
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uint8_t length;
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uint8_t prefix_length;
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uint8_t l_a_reserved1;
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uint32_t val_ltime;
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uint32_t pref_ltime;
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uint32_t reserved2;
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ipv6_addr_t addr;
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} opt_pi_t;
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typedef struct __attribute__ ((packed)) opt_aro_t {
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uint8_t type;
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uint8_t length;
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uint8_t status;
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uint8_t reserved1;
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uint16_t reserved2;
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uint16_t reg_ltime;
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ieee_802154_long_t eui64;
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} opt_aro_t;
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typedef struct __attribute__ ((packed)) pfx_elem_t {
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uint8_t inuse;
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uint8_t adv;
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ipv6_addr_t addr;
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uint8_t length;
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uint8_t l_a_reserved1;
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uint32_t val_ltime;
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uint32_t pref_ltime;
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} pfx_elem_t;
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struct __attribute__ ((packed)) rtr_adv_t {
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uint8_t hoplimit;
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uint8_t autoconfig_flags;
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uint16_t router_lifetime;
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uint32_t reachable_time;
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uint32_t retrans_timer;
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};
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struct __attribute__ ((packed)) nbr_sol_t {
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uint32_t reserved;
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ipv6_addr_t tgtaddr;
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};
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void init_rtr_sol(void);
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void recv_rtr_sol(void);
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void init_rtr_adv(ipv6_addr_t *addr);
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uint8_t pfx_chk_list(ipv6_addr_t *addr, uint8_t size);
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uint8_t pfx_cmp(ipv6_addr_t *addr1, ipv6_addr_t *addr2);
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void pfx_add(ipv6_addr_t *addr, uint8_t size, uint32_t val_ltime,
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uint32_t pref_ltime, uint8_t adv_opt, uint8_t l_a_reserved1);
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void set_llao(uint8_t *llao, uint8_t type);
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uint16_t icmpv6_csum(uint8_t proto);
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uint16_t csum(uint16_t sum, uint8_t *buf, uint16_t len);
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