-/* @(#) $Header: /tcpdump/master/tcpdump/ip6.h,v 1.8 2007-08-29 02:31:44 mcr Exp $ (LBL) */
/* 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 $ */
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 */
-};
-
-/*
- * Pseudo header, used for higher layer checksumming.
- */
-union ip6_pseudo_hdr {
- struct {
- struct in6_addr ph_src;
- struct in6_addr ph_dst;
- u_int32_t ph_len;
- u_int8_t ph_zero[3];
- u_int8_t ph_nxt;
- } ph;
- u_int16_t pa[20];
+ 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_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
/* 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 */
*/
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
#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
/* 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 */
};
#define IP6F_OFF_MASK 0xfff8 /* mask out offset from ip6f_offlg */
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