| /* Copyright (C) 1991-2014 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef __NETINET_IP_H |
| #define __NETINET_IP_H 1 |
| |
| #include <features.h> |
| #include <sys/types.h> |
| |
| #include <netinet/in.h> |
| |
| __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 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 |
| /* |
| * 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. |
| * 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 __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 |
| 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 Explicit Congestion Notification (ECN) |
| * |
| * Taken from RFC-3168, Section 5. |
| */ |
| |
| #define IPTOS_ECN_MASK 0x03 |
| #define IPTOS_ECN(x) ((x) & IPTOS_ECN_MASK) |
| #define IPTOS_ECN_NOT_ECT 0x00 |
| #define IPTOS_ECN_ECT1 0x01 |
| #define IPTOS_ECN_ECT0 0x02 |
| #define IPTOS_ECN_CE 0x03 |
| |
| /* |
| * Definitions for IP differentiated services code points (DSCP) |
| * |
| * Taken from RFC-2597, Section 6 and RFC-2598, Section 2.3. |
| */ |
| |
| #define IPTOS_DSCP_MASK 0xfc |
| #define IPTOS_DSCP(x) ((x) & IPTOS_DSCP_MASK) |
| #define IPTOS_DSCP_AF11 0x28 |
| #define IPTOS_DSCP_AF12 0x30 |
| #define IPTOS_DSCP_AF13 0x38 |
| #define IPTOS_DSCP_AF21 0x48 |
| #define IPTOS_DSCP_AF22 0x50 |
| #define IPTOS_DSCP_AF23 0x58 |
| #define IPTOS_DSCP_AF31 0x68 |
| #define IPTOS_DSCP_AF32 0x70 |
| #define IPTOS_DSCP_AF33 0x78 |
| #define IPTOS_DSCP_AF41 0x88 |
| #define IPTOS_DSCP_AF42 0x90 |
| #define IPTOS_DSCP_AF43 0x98 |
| #define IPTOS_DSCP_EF 0xb8 |
| |
| /* |
| * In RFC 2474, Section 4.2.2.1, the Class Selector Codepoints subsume |
| * the old ToS Precedence values. |
| */ |
| |
| #define IPTOS_CLASS_MASK 0xe0 |
| #define IPTOS_CLASS(class) ((class) & IPTOS_CLASS_MASK) |
| #define IPTOS_CLASS_CS0 0x00 |
| #define IPTOS_CLASS_CS1 0x20 |
| #define IPTOS_CLASS_CS2 0x40 |
| #define IPTOS_CLASS_CS3 0x60 |
| #define IPTOS_CLASS_CS4 0x80 |
| #define IPTOS_CLASS_CS5 0xa0 |
| #define IPTOS_CLASS_CS6 0xc0 |
| #define IPTOS_CLASS_CS7 0xe0 |
| |
| #define IPTOS_CLASS_DEFAULT IPTOS_CLASS_CS0 |
| |
| /* |
| * Definitions for IP type of service (ip_tos) [deprecated; use DSCP |
| * and CS definitions above instead.] |
| */ |
| #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) [also deprecated.] |
| */ |
| #define IPTOS_PREC_MASK IPTOS_CLASS_MASK |
| #define IPTOS_PREC(tos) IPTOS_CLASS(tos) |
| #define IPTOS_PREC_NETCONTROL IPTOS_CLASS_CS7 |
| #define IPTOS_PREC_INTERNETCONTROL IPTOS_CLASS_CS6 |
| #define IPTOS_PREC_CRITIC_ECP IPTOS_CLASS_CS5 |
| #define IPTOS_PREC_FLASHOVERRIDE IPTOS_CLASS_CS4 |
| #define IPTOS_PREC_FLASH IPTOS_CLASS_CS3 |
| #define IPTOS_PREC_IMMEDIATE IPTOS_CLASS_CS2 |
| #define IPTOS_PREC_PRIORITY IPTOS_CLASS_CS1 |
| #define IPTOS_PREC_ROUTINE IPTOS_CLASS_CS0 |
| |
| /* |
| * 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 */ |
