diff options
Diffstat (limited to 'include/netinet/ip.h')
| -rw-r--r-- | include/netinet/ip.h | 291 |
1 files changed, 264 insertions, 27 deletions
diff --git a/include/netinet/ip.h b/include/netinet/ip.h index a6c49b6af..246a56a5d 100644 --- a/include/netinet/ip.h +++ b/include/netinet/ip.h @@ -1,39 +1,276 @@ -#ifndef _NETINET_IP_H -#define _NETINET_IP_H +/* Copyright (C) 1991, 92, 93, 95, 96, 97, 98 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_IP_H +#define __NETINET_IP_H 1 #include <features.h> +#include <sys/types.h> + #include <netinet/in.h> -#include <linux/ip.h> -#ifdef _BSD_SOURCE +__BEGIN_DECLS + +struct timestamp + { + u_int8_t len; + u_int8_t ptr; +#if __BYTE_ORDER == __LITTLE_ENDIAN + unsigned int flags:4; + unsigned int overflow:4; +#elif __BYTE_ORDER == __BIG_ENDIAN + unsigned int overflow:4; + unsigned int flags:4; +#else +# error "Please fix <bits/endian.h>" +#endif + u_int32_t data[9]; + }; + +struct ip_options + { + u_int32_t faddr; /* Saved first hop address */ + u_int8_t optlen; + u_int8_t srr; + u_int8_t rr; + u_int8_t ts; + unsigned int is_setbyuser:1; /* Set by setsockopt? */ + unsigned int is_data:1; /* Options in __data, rather than skb */ + unsigned int is_strictroute:1; /* Strict source route */ + unsigned int srr_is_hit:1; /* Packet destination addr was our one */ + unsigned int is_changed:1; /* IP checksum more not valid */ + unsigned int rr_needaddr:1; /* Need to record addr of outgoing dev */ + unsigned int ts_needtime:1; /* Need to record timestamp */ + unsigned int ts_needaddr:1; /* Need to record addr of outgoing dev */ + u_int8_t router_alert; + u_int8_t __pad1; + u_int8_t __pad2; +#ifdef __GNUC__ + u_int8_t __data[0]; +#endif + }; + +struct iphdr + { +#if __BYTE_ORDER == __LITTLE_ENDIAN + unsigned int ihl:4; + unsigned int version:4; +#elif __BYTE_ORDER == __BIG_ENDIAN + unsigned int version:4; + unsigned int ihl:4; +#else +# error "Please fix <bits/endian.h>" +#endif + u_int8_t tos; + u_int16_t tot_len; + u_int16_t id; + u_int16_t frag_off; + u_int8_t ttl; + u_int8_t protocol; + u_int16_t check; + u_int32_t saddr; + u_int32_t daddr; + /*The options start here. */ + }; +#ifdef __USE_BSD /* - * BSD has the following structure + * Copyright (c) 1982, 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)ip.h 8.1 (Berkeley) 6/10/93 + */ + +/* + * Definitions for internet protocol version 4. + * Per RFC 791, September 1981. + */ + +/* + * Structure of an internet header, naked of options. */ - struct ip -{ -#if defined(__LITTLE_ENDIAN_BITFIELD) - __u8 ip_hl:4, - ip_v:4; -#else - __u8 ip_v:4, - ip_hl:4; + { +#if __BYTE_ORDER == __LITTLE_ENDIAN + unsigned int ip_hl:4; /* header length */ + unsigned int ip_v:4; /* version */ +#endif +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned int ip_v:4; /* version */ + unsigned int ip_hl:4; /* header length */ #endif -#define IPVERSION 4 - __u8 ip_tos; - __u16 ip_len; - __u16 ip_id; - __u16 ip_off; - __u8 ip_ttl; - __u8 ip_p; - __u16 ip_csum; - struct in_addr ip_src,ip_dst; -}; - -#define IP_DF 0x4000 /* dont fragment flag */ -#define IP_MF 0x2000 /* more fragments flag */ + u_int8_t ip_tos; /* type of service */ + u_short ip_len; /* total length */ + u_short ip_id; /* identification */ + u_short ip_off; /* fragment offset field */ +#define IP_RF 0x8000 /* reserved fragment flag */ +#define IP_DF 0x4000 /* dont fragment flag */ +#define IP_MF 0x2000 /* more fragments flag */ +#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ + u_int8_t ip_ttl; /* time to live */ + u_int8_t ip_p; /* protocol */ + u_short ip_sum; /* checksum */ + struct in_addr ip_src, ip_dst; /* source and dest address */ + }; +/* + * Time stamp option structure. + */ +struct ip_timestamp + { + u_int8_t ipt_code; /* IPOPT_TS */ + u_int8_t ipt_len; /* size of structure (variable) */ + u_int8_t ipt_ptr; /* index of current entry */ +#if __BYTE_ORDER == __LITTLE_ENDIAN + unsigned int ipt_flg:4; /* flags, see below */ + unsigned int ipt_oflw:4; /* overflow counter */ +#endif +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned int ipt_oflw:4; /* overflow counter */ + unsigned int ipt_flg:4; /* flags, see below */ #endif + u_int32_t data[9]; + }; +#endif /* __USE_BSD */ + +#define IPVERSION 4 /* IP version number */ +#define IP_MAXPACKET 65535 /* maximum packet size */ + +/* + * Definitions for IP type of service (ip_tos) + */ +#define IPTOS_TOS_MASK 0x1E +#define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK) +#define IPTOS_LOWDELAY 0x10 +#define IPTOS_THROUGHPUT 0x08 +#define IPTOS_RELIABILITY 0x04 +#define IPTOS_LOWCOST 0x02 +#define IPTOS_MINCOST IPTOS_LOWCOST + +/* + * Definitions for IP precedence (also in ip_tos) (hopefully unused) + */ +#define IPTOS_PREC_MASK 0xe0 +#define IPTOS_PREC(tos) ((tos) & IPTOS_PREC_MASK) +#define IPTOS_PREC_NETCONTROL 0xe0 +#define IPTOS_PREC_INTERNETCONTROL 0xc0 +#define IPTOS_PREC_CRITIC_ECP 0xa0 +#define IPTOS_PREC_FLASHOVERRIDE 0x80 +#define IPTOS_PREC_FLASH 0x60 +#define IPTOS_PREC_IMMEDIATE 0x40 +#define IPTOS_PREC_PRIORITY 0x20 +#define IPTOS_PREC_ROUTINE 0x00 + +/* + * Definitions for options. + */ +#define IPOPT_COPY 0x80 +#define IPOPT_CLASS_MASK 0x60 +#define IPOPT_NUMBER_MASK 0x1f + +#define IPOPT_COPIED(o) ((o) & IPOPT_COPY) +#define IPOPT_CLASS(o) ((o) & IPOPT_CLASS_MASK) +#define IPOPT_NUMBER(o) ((o) & IPOPT_NUMBER_MASK) + +#define IPOPT_CONTROL 0x00 +#define IPOPT_RESERVED1 0x20 +#define IPOPT_DEBMEAS 0x40 +#define IPOPT_MEASUREMENT IPOPT_DEBMEAS +#define IPOPT_RESERVED2 0x60 + +#define IPOPT_EOL 0 /* end of option list */ +#define IPOPT_END IPOPT_EOL +#define IPOPT_NOP 1 /* no operation */ +#define IPOPT_NOOP IPOPT_NOP + +#define IPOPT_RR 7 /* record packet route */ +#define IPOPT_TS 68 /* timestamp */ +#define IPOPT_TIMESTAMP IPOPT_TS +#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */ +#define IPOPT_SEC IPOPT_SECURITY +#define IPOPT_LSRR 131 /* loose source route */ +#define IPOPT_SATID 136 /* satnet id */ +#define IPOPT_SID IPOPT_SATID +#define IPOPT_SSRR 137 /* strict source route */ +#define IPOPT_RA 148 /* router alert */ + +/* + * Offsets to fields in options other than EOL and NOP. + */ +#define IPOPT_OPTVAL 0 /* option ID */ +#define IPOPT_OLEN 1 /* option length */ +#define IPOPT_OFFSET 2 /* offset within option */ +#define IPOPT_MINOFF 4 /* min value of above */ + +#define MAX_IPOPTLEN 40 + +/* flag bits for ipt_flg */ +#define IPOPT_TS_TSONLY 0 /* timestamps only */ +#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */ +#define IPOPT_TS_PRESPEC 3 /* specified modules only */ + +/* bits for security (not byte swapped) */ +#define IPOPT_SECUR_UNCLASS 0x0000 +#define IPOPT_SECUR_CONFID 0xf135 +#define IPOPT_SECUR_EFTO 0x789a +#define IPOPT_SECUR_MMMM 0xbc4d +#define IPOPT_SECUR_RESTR 0xaf13 +#define IPOPT_SECUR_SECRET 0xd788 +#define IPOPT_SECUR_TOPSECRET 0x6bc5 + +/* + * Internet implementation parameters. + */ +#define MAXTTL 255 /* maximum time to live (seconds) */ +#define IPDEFTTL 64 /* default ttl, from RFC 1340 */ +#define IPFRAGTTL 60 /* time to live for frags, slowhz */ +#define IPTTLDEC 1 /* subtracted when forwarding */ + +#define IP_MSS 576 /* default maximum segment size */ + +__END_DECLS -#endif /* _NETINET_IP_H */ +#endif /* netinet/ip.h */ |