icmp6.h

TCPDUMP的C语言源代码,是在数据链路层的应用

	/* could be followed by options */
};

#define nd_ns_type		nd_ns_hdr.icmp6_type
#define nd_ns_code		nd_ns_hdr.icmp6_code
#define nd_ns_cksum		nd_ns_hdr.icmp6_cksum
#define nd_ns_reserved		nd_ns_hdr.icmp6_data32[0]

struct nd_neighbor_advert {	/* neighbor advertisement */
	struct icmp6_hdr	nd_na_hdr;
	struct in6_addr		nd_na_target;	/* target address */
	/* could be followed by options */
};

#define nd_na_type		nd_na_hdr.icmp6_type
#define nd_na_code		nd_na_hdr.icmp6_code
#define nd_na_cksum		nd_na_hdr.icmp6_cksum
#define nd_na_flags_reserved	nd_na_hdr.icmp6_data32[0]

#define ND_NA_FLAG_ROUTER		0x80000000
#define ND_NA_FLAG_SOLICITED		0x40000000
#define ND_NA_FLAG_OVERRIDE		0x20000000

struct nd_redirect {		/* redirect */
	struct icmp6_hdr	nd_rd_hdr;
	struct in6_addr		nd_rd_target;	/* target address */
	struct in6_addr		nd_rd_dst;	/* destination address */
	/* could be followed by options */
};

#define nd_rd_type		nd_rd_hdr.icmp6_type
#define nd_rd_code		nd_rd_hdr.icmp6_code
#define nd_rd_cksum		nd_rd_hdr.icmp6_cksum
#define nd_rd_reserved		nd_rd_hdr.icmp6_data32[0]

struct nd_opt_hdr {		/* Neighbor discovery option header */
	u_int8_t	nd_opt_type;
	u_int8_t	nd_opt_len;
	/* followed by option specific data*/
};

#define ND_OPT_SOURCE_LINKADDR		1
#define ND_OPT_TARGET_LINKADDR		2
#define ND_OPT_PREFIX_INFORMATION	3
#define ND_OPT_REDIRECTED_HEADER	4
#define ND_OPT_MTU			5
#define ND_OPT_ADVINTERVAL		7
#define ND_OPT_HOMEAGENT_INFO		8
#define ND_OPT_ROUTE_INFO		9	/* draft-ietf-ipngwg-router-preference, not officially assigned yet */


struct nd_opt_prefix_info {	/* prefix information */
	u_int8_t	nd_opt_pi_type;
	u_int8_t	nd_opt_pi_len;
	u_int8_t	nd_opt_pi_prefix_len;
	u_int8_t	nd_opt_pi_flags_reserved;
	u_int8_t	nd_opt_pi_valid_time[4];
	u_int8_t	nd_opt_pi_preferred_time[4];
	u_int8_t	nd_opt_pi_reserved2[4];
	struct in6_addr	nd_opt_pi_prefix;
};

#define ND_OPT_PI_FLAG_ONLINK		0x80
#define ND_OPT_PI_FLAG_AUTO		0x40
#define ND_OPT_PI_FLAG_ROUTER		0x20	/*2292bis*/

struct nd_opt_rd_hdr {         /* redirected header */
	u_int8_t	nd_opt_rh_type;
	u_int8_t	nd_opt_rh_len;
	u_int16_t	nd_opt_rh_reserved1;
	u_int32_t	nd_opt_rh_reserved2;
	/* followed by IP header and data */
};

struct nd_opt_mtu {		/* MTU option */
	u_int8_t	nd_opt_mtu_type;
	u_int8_t	nd_opt_mtu_len;
	u_int16_t	nd_opt_mtu_reserved;
	u_int32_t	nd_opt_mtu_mtu;
};

struct nd_opt_advinterval {	/* Advertisement interval option */
	u_int8_t	nd_opt_adv_type;
	u_int8_t	nd_opt_adv_len;
	u_int16_t	nd_opt_adv_reserved;
	u_int32_t	nd_opt_adv_interval;
};

struct nd_opt_homeagent_info {	/* Home Agent info */
	u_int8_t	nd_opt_hai_type;
	u_int8_t	nd_opt_hai_len;
	u_int16_t	nd_opt_hai_reserved;
	int16_t		nd_opt_hai_preference;
	u_int16_t	nd_opt_hai_lifetime;
};

struct nd_opt_route_info {	/* route info */
	u_int8_t	nd_opt_rti_type;
	u_int8_t	nd_opt_rti_len;
	u_int8_t	nd_opt_rti_prefixlen;
	u_int8_t	nd_opt_rti_flags;
	u_int32_t	nd_opt_rti_lifetime;
	/* prefix follows */
};

/*
 * icmp6 namelookup
 */

struct icmp6_namelookup {
	struct icmp6_hdr 	icmp6_nl_hdr;
	u_int8_t	icmp6_nl_nonce[8];
	int32_t		icmp6_nl_ttl;
#if 0
	u_int8_t	icmp6_nl_len;
	u_int8_t	icmp6_nl_name[3];
#endif
	/* could be followed by options */
};

/*
 * icmp6 node information
 */
struct icmp6_nodeinfo {
	struct icmp6_hdr icmp6_ni_hdr;
	u_int8_t icmp6_ni_nonce[8];
	/* could be followed by reply data */
};

#define ni_type		icmp6_ni_hdr.icmp6_type
#define ni_code		icmp6_ni_hdr.icmp6_code
#define ni_cksum	icmp6_ni_hdr.icmp6_cksum
#define ni_qtype	icmp6_ni_hdr.icmp6_data16[0]
#define ni_flags	icmp6_ni_hdr.icmp6_data16[1]

#define NI_QTYPE_NOOP		0 /* NOOP  */
#define NI_QTYPE_SUPTYPES	1 /* Supported Qtypes */
#define NI_QTYPE_FQDN		2 /* FQDN (draft 04) */
#define NI_QTYPE_DNSNAME	2 /* DNS Name */
#define NI_QTYPE_NODEADDR	3 /* Node Addresses */
#define NI_QTYPE_IPV4ADDR	4 /* IPv4 Addresses */

/* network endian */
#define NI_SUPTYPE_FLAG_COMPRESS	((u_int16_t)htons(0x1))
#define NI_FQDN_FLAG_VALIDTTL		((u_int16_t)htons(0x1))

/* network endian */
#define NI_NODEADDR_FLAG_TRUNCATE	((u_int16_t)htons(0x1))
#define NI_NODEADDR_FLAG_ALL		((u_int16_t)htons(0x2))
#define NI_NODEADDR_FLAG_COMPAT		((u_int16_t)htons(0x4))
#define NI_NODEADDR_FLAG_LINKLOCAL	((u_int16_t)htons(0x8))
#define NI_NODEADDR_FLAG_SITELOCAL	((u_int16_t)htons(0x10))
#define NI_NODEADDR_FLAG_GLOBAL		((u_int16_t)htons(0x20))
#define NI_NODEADDR_FLAG_ANYCAST	((u_int16_t)htons(0x40)) /* just experimental. not in spec */

struct ni_reply_fqdn {
	u_int32_t ni_fqdn_ttl;	/* TTL */
	u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
	u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
};

/*
 * Router Renumbering. as router-renum-08.txt
 */
struct icmp6_router_renum {	/* router renumbering header */
	struct icmp6_hdr	rr_hdr;
	u_int8_t	rr_segnum;
	u_int8_t	rr_flags;
	u_int16_t	rr_maxdelay;
	u_int32_t	rr_reserved;
};
#define ICMP6_RR_FLAGS_TEST		0x80
#define ICMP6_RR_FLAGS_REQRESULT	0x40
#define ICMP6_RR_FLAGS_FORCEAPPLY	0x20
#define ICMP6_RR_FLAGS_SPECSITE		0x10
#define ICMP6_RR_FLAGS_PREVDONE		0x08

#define rr_type		rr_hdr.icmp6_type
#define rr_code		rr_hdr.icmp6_code
#define rr_cksum	rr_hdr.icmp6_cksum
#define rr_seqnum 	rr_hdr.icmp6_data32[0]

struct rr_pco_match {		/* match prefix part */
	u_int8_t	rpm_code;
	u_int8_t	rpm_len;
	u_int8_t	rpm_ordinal;
	u_int8_t	rpm_matchlen;
	u_int8_t	rpm_minlen;
	u_int8_t	rpm_maxlen;
	u_int16_t	rpm_reserved;
	struct	in6_addr	rpm_prefix;
};

#define RPM_PCO_ADD		1
#define RPM_PCO_CHANGE		2
#define RPM_PCO_SETGLOBAL	3
#define RPM_PCO_MAX		4

struct rr_pco_use {		/* use prefix part */
	u_int8_t	rpu_uselen;
	u_int8_t	rpu_keeplen;
	u_int8_t	rpu_ramask;
	u_int8_t	rpu_raflags;
	u_int32_t	rpu_vltime;
	u_int32_t	rpu_pltime;
	u_int32_t	rpu_flags;
	struct	in6_addr rpu_prefix;
};
#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK	0x80
#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO	0x40

/* network endian */
#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     ((u_int32_t)htonl(0x80000000))
#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     ((u_int32_t)htonl(0x40000000))

struct rr_result {		/* router renumbering result message */
	u_int16_t	rrr_flags;
	u_int8_t	rrr_ordinal;
	u_int8_t	rrr_matchedlen;
	u_int32_t	rrr_ifid;
	struct	in6_addr rrr_prefix;
};
/* network endian */
#define ICMP6_RR_RESULT_FLAGS_OOB		((u_int16_t)htons(0x0002))
#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN		((u_int16_t)htons(0x0001))

#endif /* not _NETINET_ICMP6_H_ */