mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 11:20:07 +00:00
a459657032
2003-06-14 Ulrich Drepper <drepper@redhat.com> * inet/netinet/ip6.h (IP6OPT_PAD1, IP6OPT_PADn): Define. * inet/netinet/in.h: Add prototypes for inet6_option_* functions. * inet/Makefile (routines): Add inet6_option. * inet/inet6_option.c: New file. * inet/Versions [GLIBC_2.3.3] (libc): Add inet6_option_space, inet6_option_init, inet6_option_append, inet6_option_alloc, inet6_option_next, and inet6_option_find. * inet/netinet/ip6.h (struct ip6_ext): Define.
119 lines
3.8 KiB
C
119 lines
3.8 KiB
C
/* 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
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; 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; /* 4 bits version, 8 bits TC,
|
|
20 bits 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, top 4 bits tclass */
|
|
} 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
|
|
|
|
/* 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 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 */
|
|
/* 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
|
|
|
|
/* Special option types for padding. */
|
|
#define IP6OPT_PAD1 0
|
|
#define IP6OPT_PADN 1
|
|
|
|
#endif /* netinet/ip6.h */
|