1/*
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)ip.h 8.1 (Berkeley) 6/10/93
| 1/*
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)ip.h 8.1 (Berkeley) 6/10/93
|
34 * $Id: ip.h,v 1.2 1994/08/02 07:48:30 davidg Exp $
| 34 * $Id: ip.h,v 1.3 1994/08/21 05:27:30 paul Exp $
|
35 */
36
37#ifndef _NETINET_IP_H_
38#define _NETINET_IP_H_
39
40/*
41 * Definitions for internet protocol version 4.
42 * Per RFC 791, September 1981.
43 */
44#define IPVERSION 4
45
46/*
47 * Structure of an internet header, naked of options.
48 *
49 * We declare ip_len and ip_off to be short, rather than u_short
50 * pragmatically since otherwise unsigned comparisons can result
51 * against negative integers quite easily, and fail in subtle ways.
52 */
53struct ip {
54#if BYTE_ORDER == LITTLE_ENDIAN
55 u_char ip_hl:4, /* header length */
56 ip_v:4; /* version */
57#endif
58#if BYTE_ORDER == BIG_ENDIAN
59 u_char ip_v:4, /* version */
60 ip_hl:4; /* header length */
61#endif
62 u_char ip_tos; /* type of service */
63 short ip_len; /* total length */
64 u_short ip_id; /* identification */
65 short ip_off; /* fragment offset field */
66#define IP_DF 0x4000 /* dont fragment flag */
67#define IP_MF 0x2000 /* more fragments flag */
68#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
69 u_char ip_ttl; /* time to live */
70 u_char ip_p; /* protocol */
71 u_short ip_sum; /* checksum */
72 struct in_addr ip_src,ip_dst; /* source and dest address */
73};
74
75#define IP_MAXPACKET 65535 /* maximum packet size */
76
77/*
78 * Definitions for IP type of service (ip_tos)
79 */
80#define IPTOS_LOWDELAY 0x10
81#define IPTOS_THROUGHPUT 0x08
82#define IPTOS_RELIABILITY 0x04
| 35 */
36
37#ifndef _NETINET_IP_H_
38#define _NETINET_IP_H_
39
40/*
41 * Definitions for internet protocol version 4.
42 * Per RFC 791, September 1981.
43 */
44#define IPVERSION 4
45
46/*
47 * Structure of an internet header, naked of options.
48 *
49 * We declare ip_len and ip_off to be short, rather than u_short
50 * pragmatically since otherwise unsigned comparisons can result
51 * against negative integers quite easily, and fail in subtle ways.
52 */
53struct ip {
54#if BYTE_ORDER == LITTLE_ENDIAN
55 u_char ip_hl:4, /* header length */
56 ip_v:4; /* version */
57#endif
58#if BYTE_ORDER == BIG_ENDIAN
59 u_char ip_v:4, /* version */
60 ip_hl:4; /* header length */
61#endif
62 u_char ip_tos; /* type of service */
63 short ip_len; /* total length */
64 u_short ip_id; /* identification */
65 short ip_off; /* fragment offset field */
66#define IP_DF 0x4000 /* dont fragment flag */
67#define IP_MF 0x2000 /* more fragments flag */
68#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
69 u_char ip_ttl; /* time to live */
70 u_char ip_p; /* protocol */
71 u_short ip_sum; /* checksum */
72 struct in_addr ip_src,ip_dst; /* source and dest address */
73};
74
75#define IP_MAXPACKET 65535 /* maximum packet size */
76
77/*
78 * Definitions for IP type of service (ip_tos)
79 */
80#define IPTOS_LOWDELAY 0x10
81#define IPTOS_THROUGHPUT 0x08
82#define IPTOS_RELIABILITY 0x04
|
| 83#define IPTOS_MINCOST 0x02
|
83
84/*
85 * Definitions for IP precedence (also in ip_tos) (hopefully unused)
86 */
87#define IPTOS_PREC_NETCONTROL 0xe0
88#define IPTOS_PREC_INTERNETCONTROL 0xc0
89#define IPTOS_PREC_CRITIC_ECP 0xa0
90#define IPTOS_PREC_FLASHOVERRIDE 0x80
91#define IPTOS_PREC_FLASH 0x60
92#define IPTOS_PREC_IMMEDIATE 0x40
93#define IPTOS_PREC_PRIORITY 0x20
| 84
85/*
86 * Definitions for IP precedence (also in ip_tos) (hopefully unused)
87 */
88#define IPTOS_PREC_NETCONTROL 0xe0
89#define IPTOS_PREC_INTERNETCONTROL 0xc0
90#define IPTOS_PREC_CRITIC_ECP 0xa0
91#define IPTOS_PREC_FLASHOVERRIDE 0x80
92#define IPTOS_PREC_FLASH 0x60
93#define IPTOS_PREC_IMMEDIATE 0x40
94#define IPTOS_PREC_PRIORITY 0x20
|
94#define IPTOS_PREC_ROUTINE 0x10
| 95#define IPTOS_PREC_ROUTINE 0x00
|
95
96/*
97 * Definitions for options.
98 */
99#define IPOPT_COPIED(o) ((o)&0x80)
100#define IPOPT_CLASS(o) ((o)&0x60)
101#define IPOPT_NUMBER(o) ((o)&0x1f)
102
103#define IPOPT_CONTROL 0x00
104#define IPOPT_RESERVED1 0x20
105#define IPOPT_DEBMEAS 0x40
106#define IPOPT_RESERVED2 0x60
107
108#define IPOPT_EOL 0 /* end of option list */
109#define IPOPT_NOP 1 /* no operation */
110
111#define IPOPT_RR 7 /* record packet route */
112#define IPOPT_TS 68 /* timestamp */
113#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
114#define IPOPT_LSRR 131 /* loose source route */
115#define IPOPT_SATID 136 /* satnet id */
116#define IPOPT_SSRR 137 /* strict source route */
117
118/*
119 * Offsets to fields in options other than EOL and NOP.
120 */
121#define IPOPT_OPTVAL 0 /* option ID */
122#define IPOPT_OLEN 1 /* option length */
123#define IPOPT_OFFSET 2 /* offset within option */
124#define IPOPT_MINOFF 4 /* min value of above */
125
126/*
127 * Time stamp option structure.
128 */
129struct ip_timestamp {
130 u_char ipt_code; /* IPOPT_TS */
131 u_char ipt_len; /* size of structure (variable) */
132 u_char ipt_ptr; /* index of current entry */
133#if BYTE_ORDER == LITTLE_ENDIAN
134 u_char ipt_flg:4, /* flags, see below */
135 ipt_oflw:4; /* overflow counter */
136#endif
137#if BYTE_ORDER == BIG_ENDIAN
138 u_char ipt_oflw:4, /* overflow counter */
139 ipt_flg:4; /* flags, see below */
140#endif
141 union ipt_timestamp {
142 n_long ipt_time[1];
143 struct ipt_ta {
144 struct in_addr ipt_addr;
145 n_long ipt_time;
146 } ipt_ta[1];
147 } ipt_timestamp;
148};
149
150/* flag bits for ipt_flg */
151#define IPOPT_TS_TSONLY 0 /* timestamps only */
152#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
153#define IPOPT_TS_PRESPEC 3 /* specified modules only */
154
155/* bits for security (not byte swapped) */
156#define IPOPT_SECUR_UNCLASS 0x0000
157#define IPOPT_SECUR_CONFID 0xf135
158#define IPOPT_SECUR_EFTO 0x789a
159#define IPOPT_SECUR_MMMM 0xbc4d
160#define IPOPT_SECUR_RESTR 0xaf13
161#define IPOPT_SECUR_SECRET 0xd788
162#define IPOPT_SECUR_TOPSECRET 0x6bc5
163
164/*
165 * Internet implementation parameters.
166 */
167#define MAXTTL 255 /* maximum time to live (seconds) */
168#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
169#define IPFRAGTTL 60 /* time to live for frags, slowhz */
170#define IPTTLDEC 1 /* subtracted when forwarding */
171
172#define IP_MSS 576 /* default maximum segment size */
173
174#endif
| 96
97/*
98 * Definitions for options.
99 */
100#define IPOPT_COPIED(o) ((o)&0x80)
101#define IPOPT_CLASS(o) ((o)&0x60)
102#define IPOPT_NUMBER(o) ((o)&0x1f)
103
104#define IPOPT_CONTROL 0x00
105#define IPOPT_RESERVED1 0x20
106#define IPOPT_DEBMEAS 0x40
107#define IPOPT_RESERVED2 0x60
108
109#define IPOPT_EOL 0 /* end of option list */
110#define IPOPT_NOP 1 /* no operation */
111
112#define IPOPT_RR 7 /* record packet route */
113#define IPOPT_TS 68 /* timestamp */
114#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
115#define IPOPT_LSRR 131 /* loose source route */
116#define IPOPT_SATID 136 /* satnet id */
117#define IPOPT_SSRR 137 /* strict source route */
118
119/*
120 * Offsets to fields in options other than EOL and NOP.
121 */
122#define IPOPT_OPTVAL 0 /* option ID */
123#define IPOPT_OLEN 1 /* option length */
124#define IPOPT_OFFSET 2 /* offset within option */
125#define IPOPT_MINOFF 4 /* min value of above */
126
127/*
128 * Time stamp option structure.
129 */
130struct ip_timestamp {
131 u_char ipt_code; /* IPOPT_TS */
132 u_char ipt_len; /* size of structure (variable) */
133 u_char ipt_ptr; /* index of current entry */
134#if BYTE_ORDER == LITTLE_ENDIAN
135 u_char ipt_flg:4, /* flags, see below */
136 ipt_oflw:4; /* overflow counter */
137#endif
138#if BYTE_ORDER == BIG_ENDIAN
139 u_char ipt_oflw:4, /* overflow counter */
140 ipt_flg:4; /* flags, see below */
141#endif
142 union ipt_timestamp {
143 n_long ipt_time[1];
144 struct ipt_ta {
145 struct in_addr ipt_addr;
146 n_long ipt_time;
147 } ipt_ta[1];
148 } ipt_timestamp;
149};
150
151/* flag bits for ipt_flg */
152#define IPOPT_TS_TSONLY 0 /* timestamps only */
153#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
154#define IPOPT_TS_PRESPEC 3 /* specified modules only */
155
156/* bits for security (not byte swapped) */
157#define IPOPT_SECUR_UNCLASS 0x0000
158#define IPOPT_SECUR_CONFID 0xf135
159#define IPOPT_SECUR_EFTO 0x789a
160#define IPOPT_SECUR_MMMM 0xbc4d
161#define IPOPT_SECUR_RESTR 0xaf13
162#define IPOPT_SECUR_SECRET 0xd788
163#define IPOPT_SECUR_TOPSECRET 0x6bc5
164
165/*
166 * Internet implementation parameters.
167 */
168#define MAXTTL 255 /* maximum time to live (seconds) */
169#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
170#define IPFRAGTTL 60 /* time to live for frags, slowhz */
171#define IPTTLDEC 1 /* subtracted when forwarding */
172
173#define IP_MSS 576 /* default maximum segment size */
174
175#endif
|