diff options
Diffstat (limited to 'include/netinet/ip6.h')
| -rw-r--r-- | include/netinet/ip6.h | 119 |
1 files changed, 100 insertions, 19 deletions
diff --git a/include/netinet/ip6.h b/include/netinet/ip6.h index c6fc2b31c..0ad62f898 100644 --- a/include/netinet/ip6.h +++ b/include/netinet/ip6.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1991-1997, 2001 Free Software Foundation, Inc. +/* Copyright (C) 1991-1997, 2001, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -47,51 +47,58 @@ struct ip6_hdr #define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim #define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim +/* Generic extension header. */ +struct ip6_ext + { + uint8_t ip6e_nxt; /* next header. */ + uint8_t ip6e_len; /* length in units of 8 octets. */ + }; + /* Hop-by-Hop options header. */ struct ip6_hbh { - uint8_t ip6h_nxt; /* next hesder. */ - uint8_t ip6h_len; /* length in units of 8 octets. */ + uint8_t ip6h_nxt; /* next header. */ + uint8_t ip6h_len; /* length in units of 8 octets. */ /* followed by options */ }; /* Destination options header */ struct ip6_dest { - uint8_t ip6d_nxt; /* next header */ - uint8_t ip6d_len; /* length in units of 8 octets */ + uint8_t ip6d_nxt; /* next header */ + uint8_t ip6d_len; /* length in units of 8 octets */ /* followed by options */ }; /* Routing header */ struct ip6_rthdr { - uint8_t ip6r_nxt; /* next header */ - uint8_t ip6r_len; /* length in units of 8 octets */ - uint8_t ip6r_type; /* routing type */ - uint8_t ip6r_segleft; /* segments left */ + uint8_t ip6r_nxt; /* next header */ + uint8_t ip6r_len; /* length in units of 8 octets */ + uint8_t ip6r_type; /* routing type */ + uint8_t ip6r_segleft; /* segments left */ /* followed by routing type specific data */ }; /* Type 0 Routing header */ struct ip6_rthdr0 { - uint8_t ip6r0_nxt; /* next header */ - uint8_t ip6r0_len; /* length in units of 8 octets */ - uint8_t ip6r0_type; /* always zero */ - uint8_t ip6r0_segleft; /* segments left */ - uint8_t ip6r0_reserved; /* reserved field */ - uint8_t ip6r0_slmap[3]; /* strict/loose bit map */ + uint8_t ip6r0_nxt; /* next header */ + uint8_t ip6r0_len; /* length in units of 8 octets */ + uint8_t ip6r0_type; /* always zero */ + uint8_t ip6r0_segleft; /* segments left */ + uint8_t ip6r0_reserved; /* reserved field */ + uint8_t ip6r0_slmap[3]; /* strict/loose bit map */ struct in6_addr ip6r0_addr[1]; /* up to 23 addresses */ }; /* Fragment header */ struct ip6_frag { - uint8_t ip6f_nxt; /* next header */ - uint8_t ip6f_reserved; /* reserved field */ - uint16_t ip6f_offlg; /* offset, reserved, and flag */ - uint32_t ip6f_ident; /* identification */ + uint8_t ip6f_nxt; /* next header */ + uint8_t ip6f_reserved; /* reserved field */ + uint16_t ip6f_offlg; /* offset, reserved, and flag */ + uint32_t ip6f_ident; /* identification */ }; #if BYTE_ORDER == BIG_ENDIAN @@ -104,4 +111,78 @@ struct ip6_frag #define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */ #endif +/* IPv6 options */ +struct ip6_opt + { + uint8_t ip6o_type; + uint8_t ip6o_len; + }; + +/* The high-order 3 bits of the option type define the behavior + * when processing an unknown option and whether or not the option + * content changes in flight. + */ +#define IP6OPT_TYPE(o) ((o) & 0xc0) +#define IP6OPT_TYPE_SKIP 0x00 +#define IP6OPT_TYPE_DISCARD 0x40 +#define IP6OPT_TYPE_FORCEICMP 0x80 +#define IP6OPT_TYPE_ICMP 0xc0 +#define IP6OPT_TYPE_MUTABLE 0x20 + +/* Special option types for padding. */ +#define IP6OPT_PAD1 0 +#define IP6OPT_PADN 1 + +#define IP6OPT_JUMBO 0xc2 +#define IP6OPT_NSAP_ADDR 0xc3 +#define IP6OPT_TUNNEL_LIMIT 0x04 +#define IP6OPT_ROUTER_ALERT 0x05 + +/* Jumbo Payload Option */ +struct ip6_opt_jumbo + { + uint8_t ip6oj_type; + uint8_t ip6oj_len; + uint8_t ip6oj_jumbo_len[4]; + }; +#define IP6OPT_JUMBO_LEN 6 + +/* NSAP Address Option */ +struct ip6_opt_nsap + { + uint8_t ip6on_type; + uint8_t ip6on_len; + uint8_t ip6on_src_nsap_len; + uint8_t ip6on_dst_nsap_len; + /* followed by source NSAP */ + /* followed by destination NSAP */ + }; + +/* Tunnel Limit Option */ +struct ip6_opt_tunnel + { + uint8_t ip6ot_type; + uint8_t ip6ot_len; + uint8_t ip6ot_encap_limit; + }; + +/* Router Alert Option */ +struct ip6_opt_router + { + uint8_t ip6or_type; + uint8_t ip6or_len; + uint8_t ip6or_value[2]; + }; + +/* Router alert values (in network byte order) */ +#if BYTE_ORDER == BIG_ENDIAN +# define IP6_ALERT_MLD 0x0000 +# define IP6_ALERT_RSVP 0x0001 +# define IP6_ALERT_AN 0x0002 +#else /* BYTE_ORDER == LITTLE_ENDING */ +# define IP6_ALERT_MLD 0x0000 +# define IP6_ALERT_RSVP 0x0100 +# define IP6_ALERT_AN 0x0200 +#endif + #endif /* netinet/ip6.h */ |