X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/4881292df08d4ad97e29817f90a26dfea475b47e..a8c33a5850cd9d2f39e56c06b645c283225d78c4:/ip6.h diff --git a/ip6.h b/ip6.h index 8e3ccfde..8757098c 100644 --- a/ip6.h +++ b/ip6.h @@ -1,5 +1,4 @@ -/* @(#) $Header: /tcpdump/master/tcpdump/ip6.h,v 1.3 2000-12-17 23:07:48 guy Exp $ (LBL) */ -/* $NetBSD: ip6.h,v 1.9 2000/07/13 05:34:21 itojun Exp $ */ +/* NetBSD: ip6.h,v 1.9 2000/07/13 05:34:21 itojun Exp */ /* $KAME: ip6.h,v 1.9 2000/07/02 21:01:32 itojun Exp $ */ /* @@ -77,30 +76,28 @@ struct ip6_hdr { union { struct ip6_hdrctl { - u_int32_t ip6_un1_flow; /* 20 bits of flow-ID */ - u_int16_t ip6_un1_plen; /* payload length */ - u_int8_t ip6_un1_nxt; /* next header */ - u_int8_t ip6_un1_hlim; /* hop limit */ + nd_uint32_t ip6_un1_flow; /* 20 bits of flow-ID */ + nd_uint16_t ip6_un1_plen; /* payload length */ + nd_uint8_t ip6_un1_nxt; /* next header */ + nd_uint8_t ip6_un1_hlim; /* hop limit */ } ip6_un1; - u_int8_t ip6_un2_vfc; /* 4 bits version, top 4 bits class */ + nd_uint8_t ip6_un2_vfc; /* 4 bits version, top 4 bits class */ } ip6_ctlun; - struct in6_addr ip6_src; /* source address */ - struct in6_addr ip6_dst; /* destination address */ + nd_ipv6 ip6_src; /* source address */ + nd_ipv6 ip6_dst; /* destination address */ }; #define ip6_vfc ip6_ctlun.ip6_un2_vfc +#define IP6_VERSION(ip6_hdr) ((GET_U_1((ip6_hdr)->ip6_vfc) & 0xf0) >> 4) #define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow #define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen #define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt #define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim #define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim -#define IPV6_VERSION 0x60 -#define IPV6_VERSION_MASK 0xf0 - /* in network endian */ -#define IPV6_FLOWINFO_MASK ((u_int32_t)htonl(0x0fffffff)) /* flow info (28 bits) */ -#define IPV6_FLOWLABEL_MASK ((u_int32_t)htonl(0x000fffff)) /* flow label (20 bits) */ +#define IPV6_FLOWINFO_MASK ((uint32_t)htonl(0x0fffffff)) /* flow info (28 bits) */ +#define IPV6_FLOWLABEL_MASK ((uint32_t)htonl(0x000fffff)) /* flow label (20 bits) */ #if 1 /* ECN bits proposed by Sally Floyd */ #define IP6TOS_CE 0x01 /* congestion experienced */ @@ -112,31 +109,33 @@ struct ip6_hdr { */ struct ip6_ext { - u_char ip6e_nxt; - u_char ip6e_len; + nd_uint8_t ip6e_nxt; + nd_uint8_t ip6e_len; }; /* Hop-by-Hop options header */ -/* XXX should we pad it to force alignment on an 8-byte boundary? */ struct ip6_hbh { - u_int8_t ip6h_nxt; /* next header */ - u_int8_t ip6h_len; /* length in units of 8 octets */ + nd_uint8_t ip6h_nxt; /* next header */ + nd_uint8_t ip6h_len; /* length in units of 8 octets */ /* followed by options */ }; /* Destination options header */ -/* XXX should we pad it to force alignment on an 8-byte boundary? */ struct ip6_dest { - u_int8_t ip6d_nxt; /* next header */ - u_int8_t ip6d_len; /* length in units of 8 octets */ + nd_uint8_t ip6d_nxt; /* next header */ + nd_uint8_t ip6d_len; /* length in units of 8 octets */ /* followed by options */ }; +/* https://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xhtml */ + /* Option types and related macros */ #define IP6OPT_PAD1 0x00 /* 00 0 00000 */ #define IP6OPT_PADN 0x01 /* 00 0 00001 */ #define IP6OPT_JUMBO 0xC2 /* 11 0 00010 = 194 */ #define IP6OPT_JUMBO_LEN 6 +#define IP6OPT_RPL 0x63 /* 01 1 00011 */ +#define IP6OPT_TUN_ENC_LIMIT 0x04 /* 00 0 00100 */ #define IP6OPT_ROUTER_ALERT 0x05 /* 00 0 00101 */ #define IP6OPT_RTALERT_LEN 4 @@ -145,11 +144,16 @@ struct ip6_dest { #define IP6OPT_RTALERT_ACTNET 2 /* contains an Active Networks msg */ #define IP6OPT_MINLEN 2 -#define IP6OPT_BINDING_UPDATE 0xc6 /* 11 0 00110 */ -#define IP6OPT_BINDING_ACK 0x07 /* 00 0 00111 */ -#define IP6OPT_BINDING_REQ 0x08 /* 00 0 01000 */ +#define IP6OPT_QUICK_START 0x26 /* 00 1 00110 */ +#define IP6OPT_CALIPSO 0x07 /* 00 0 00111 */ +#define IP6OPT_SMF_DPD 0x08 /* 00 0 01000 */ #define IP6OPT_HOME_ADDRESS 0xc9 /* 11 0 01001 */ +#define IP6OPT_HOMEADDR_MINLEN 18 #define IP6OPT_EID 0x8a /* 10 0 01010 */ +#define IP6OPT_ILNP_NOTICE 0x8b /* 10 0 01011 */ +#define IP6OPT_LINE_ID 0x8c /* 10 0 01100 */ +#define IP6OPT_MPL 0x6d /* 01 1 01101 */ +#define IP6OPT_IP_DFF 0xee /* 11 1 01110 */ #define IP6OPT_TYPE(o) ((o) & 0xC0) #define IP6OPT_TYPE_SKIP 0x00 @@ -161,35 +165,53 @@ struct ip6_dest { /* Routing header */ struct ip6_rthdr { - u_int8_t ip6r_nxt; /* next header */ - u_int8_t ip6r_len; /* length in units of 8 octets */ - u_int8_t ip6r_type; /* routing type */ - u_int8_t ip6r_segleft; /* segments left */ + nd_uint8_t ip6r_nxt; /* next header */ + nd_uint8_t ip6r_len; /* length in units of 8 octets */ + nd_uint8_t ip6r_type; /* routing type */ + nd_uint8_t ip6r_segleft; /* segments left */ /* followed by routing type specific data */ }; +#define IPV6_RTHDR_TYPE_0 0 +#define IPV6_RTHDR_TYPE_2 2 +#define IPV6_RTHDR_TYPE_4 4 + /* Type 0 Routing header */ +/* Also used for Type 2 */ struct ip6_rthdr0 { - u_int8_t ip6r0_nxt; /* next header */ - u_int8_t ip6r0_len; /* length in units of 8 octets */ - u_int8_t ip6r0_type; /* always zero */ - u_int8_t ip6r0_segleft; /* segments left */ - u_int8_t ip6r0_reserved; /* reserved field */ - u_int8_t ip6r0_slmap[3]; /* strict/loose bit map */ - struct in6_addr ip6r0_addr[1]; /* up to 23 addresses */ + nd_uint8_t ip6r0_nxt; /* next header */ + nd_uint8_t ip6r0_len; /* length in units of 8 octets */ + nd_uint8_t ip6r0_type; /* always zero */ + nd_uint8_t ip6r0_segleft; /* segments left */ + nd_uint32_t ip6r0_reserved; /* reserved field */ + nd_ipv6 ip6r0_addr[1]; /* up to 23 addresses */ +}; + +/** + * Type 4 Routing header + * known as Segment Routing Header 'SRH' + */ +struct ip6_srh { + nd_uint8_t srh_nxt; /* next header */ + nd_uint8_t srh_len; /* length in units of 8 octets */ + nd_uint8_t srh_type; /* Routing Type 4 */ + nd_uint8_t srh_segleft; /* segments left */ + nd_uint8_t srh_last_ent; /* Last Entry*/ + nd_uint8_t srh_flags; /* Flags */ + nd_uint16_t srh_tag; /* Tag */ + nd_ipv6 srh_segments[1]; /* SRH segments list*/ }; /* Fragment header */ struct ip6_frag { - u_int8_t ip6f_nxt; /* next header */ - u_int8_t ip6f_reserved; /* reserved field */ - u_int16_t ip6f_offlg; /* offset, reserved, and flag */ - u_int32_t ip6f_ident; /* identification */ + nd_uint8_t ip6f_nxt; /* next header */ + nd_uint8_t ip6f_reserved; /* reserved field */ + nd_uint16_t ip6f_offlg; /* offset, reserved, and flag */ + nd_uint32_t ip6f_ident; /* identification */ }; -/* network endian */ -#define IP6F_OFF_MASK ((u_int16_t)htons(0xfff8)) /* mask out offset from _offlg */ -#define IP6F_RESERVED_MASK ((u_int16_t)htons(0x0006)) /* reserved bits in ip6f_offlg */ -#define IP6F_MORE_FRAG ((u_int16_t)htons(0x0001)) /* more-fragments flag */ +#define IP6F_OFF_MASK 0xfff8 /* mask out offset from ip6f_offlg */ +#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */ +#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */ #endif /* not _NETINET_IP6_H_ */