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Diffstat (limited to 'include/netinet/ip6.h')
| -rw-r--r-- | include/netinet/ip6.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/include/netinet/ip6.h b/include/netinet/ip6.h new file mode 100644 index 000000000..cd42ef64b --- /dev/null +++ b/include/netinet/ip6.h @@ -0,0 +1,106 @@ +/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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 + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _NETINET_IP6_H +#define _NETINET_IP6_H 1 + +#include <inttypes.h> +#include <netinet/in.h> + +struct ip6_hdr + { + union + { + struct ip6_hdrctl + { + uint32_t ip6_un1_flow; /* 24 bits of flow-ID */ + uint16_t ip6_un1_plen; /* payload length */ + uint8_t ip6_un1_nxt; /* next header */ + uint8_t ip6_un1_hlim; /* hop limit */ + } ip6_un1; + uint8_t ip6_un2_vfc; /* 4 bits version, 4 bits priority */ + } ip6_ctlun; + struct in6_addr ip6_src; /* source address */ + struct in6_addr ip6_dst; /* destination address */ + }; + +#define ip6_vfc ip6_ctlun.ip6_un2_vfc +#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 + +/* Hop-by-Hop options header. */ +struct ip6_hbh + { + uint8_t ip6h_nxt; /* next hesder. */ + 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 */ + /* 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 */ + /* 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 */ + 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 */ + }; + +#if BYTE_ORDER == BIG_ENDIAN +#define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */ +#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */ +#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */ +#else /* BYTE_ORDER == LITTLE_ENDIAN */ +#define IP6F_OFF_MASK 0xf8ff /* mask out offset from _offlg */ +#define IP6F_RESERVED_MASK 0x0600 /* reserved bits in ip6f_offlg */ +#define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */ +#endif + +#endif /* netinet/ip6.h */ |