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 8.2 (Berkeley) 6/1/94
| 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 8.2 (Berkeley) 6/1/94
|
34 * $FreeBSD: head/sys/netinet/ip.h 50477 1999-08-28 01:08:13Z peter $
| 34 * $FreeBSD: head/sys/netinet/ip.h 55009 1999-12-22 19:13:38Z shin $
|
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 */
49struct ip {
50#ifdef _IP_VHL
51 u_char ip_vhl; /* version << 4 | header length >> 2 */
52#else
53#if BYTE_ORDER == LITTLE_ENDIAN
54 u_int ip_hl:4, /* header length */
55 ip_v:4; /* version */
56#endif
57#if BYTE_ORDER == BIG_ENDIAN
58 u_int ip_v:4, /* version */
59 ip_hl:4; /* header length */
60#endif
61#endif /* not _IP_VHL */
62 u_char ip_tos; /* type of service */
63 u_short ip_len; /* total length */
64 u_short ip_id; /* identification */
65 u_short ip_off; /* fragment offset field */
66#define IP_RF 0x8000 /* reserved fragment flag */
67#define IP_DF 0x4000 /* dont fragment flag */
68#define IP_MF 0x2000 /* more fragments flag */
69#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
70 u_char ip_ttl; /* time to live */
71 u_char ip_p; /* protocol */
72 u_short ip_sum; /* checksum */
73 struct in_addr ip_src,ip_dst; /* source and dest address */
74};
75
76#ifdef _IP_VHL
77#define IP_MAKE_VHL(v, hl) ((v) << 4 | (hl))
78#define IP_VHL_HL(vhl) ((vhl) & 0x0f)
79#define IP_VHL_V(vhl) ((vhl) >> 4)
80#define IP_VHL_BORING 0x45
81#endif
82
83#define IP_MAXPACKET 65535 /* maximum packet size */
84
85/*
86 * Definitions for IP type of service (ip_tos)
87 */
88#define IPTOS_LOWDELAY 0x10
89#define IPTOS_THROUGHPUT 0x08
90#define IPTOS_RELIABILITY 0x04
91#define IPTOS_MINCOST 0x02
| 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 */
49struct ip {
50#ifdef _IP_VHL
51 u_char ip_vhl; /* version << 4 | header length >> 2 */
52#else
53#if BYTE_ORDER == LITTLE_ENDIAN
54 u_int ip_hl:4, /* header length */
55 ip_v:4; /* version */
56#endif
57#if BYTE_ORDER == BIG_ENDIAN
58 u_int ip_v:4, /* version */
59 ip_hl:4; /* header length */
60#endif
61#endif /* not _IP_VHL */
62 u_char ip_tos; /* type of service */
63 u_short ip_len; /* total length */
64 u_short ip_id; /* identification */
65 u_short ip_off; /* fragment offset field */
66#define IP_RF 0x8000 /* reserved fragment flag */
67#define IP_DF 0x4000 /* dont fragment flag */
68#define IP_MF 0x2000 /* more fragments flag */
69#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
70 u_char ip_ttl; /* time to live */
71 u_char ip_p; /* protocol */
72 u_short ip_sum; /* checksum */
73 struct in_addr ip_src,ip_dst; /* source and dest address */
74};
75
76#ifdef _IP_VHL
77#define IP_MAKE_VHL(v, hl) ((v) << 4 | (hl))
78#define IP_VHL_HL(vhl) ((vhl) & 0x0f)
79#define IP_VHL_V(vhl) ((vhl) >> 4)
80#define IP_VHL_BORING 0x45
81#endif
82
83#define IP_MAXPACKET 65535 /* maximum packet size */
84
85/*
86 * Definitions for IP type of service (ip_tos)
87 */
88#define IPTOS_LOWDELAY 0x10
89#define IPTOS_THROUGHPUT 0x08
90#define IPTOS_RELIABILITY 0x04
91#define IPTOS_MINCOST 0x02
|
| 92/* ECN bits proposed by Sally Floyd */
93#define IPTOS_CE 0x01 /* congestion experienced */
94#define IPTOS_ECT 0x02 /* ECN-capable transport */
|
92
| 95
|
| 96
|
93/*
94 * Definitions for IP precedence (also in ip_tos) (hopefully unused)
95 */
96#define IPTOS_PREC_NETCONTROL 0xe0
97#define IPTOS_PREC_INTERNETCONTROL 0xc0
98#define IPTOS_PREC_CRITIC_ECP 0xa0
99#define IPTOS_PREC_FLASHOVERRIDE 0x80
100#define IPTOS_PREC_FLASH 0x60
101#define IPTOS_PREC_IMMEDIATE 0x40
102#define IPTOS_PREC_PRIORITY 0x20
103#define IPTOS_PREC_ROUTINE 0x00
104
105/*
106 * Definitions for options.
107 */
108#define IPOPT_COPIED(o) ((o)&0x80)
109#define IPOPT_CLASS(o) ((o)&0x60)
110#define IPOPT_NUMBER(o) ((o)&0x1f)
111
112#define IPOPT_CONTROL 0x00
113#define IPOPT_RESERVED1 0x20
114#define IPOPT_DEBMEAS 0x40
115#define IPOPT_RESERVED2 0x60
116
117#define IPOPT_EOL 0 /* end of option list */
118#define IPOPT_NOP 1 /* no operation */
119
120#define IPOPT_RR 7 /* record packet route */
121#define IPOPT_TS 68 /* timestamp */
122#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
123#define IPOPT_LSRR 131 /* loose source route */
124#define IPOPT_SATID 136 /* satnet id */
125#define IPOPT_SSRR 137 /* strict source route */
126#define IPOPT_RA 148 /* router alert */
127
128/*
129 * Offsets to fields in options other than EOL and NOP.
130 */
131#define IPOPT_OPTVAL 0 /* option ID */
132#define IPOPT_OLEN 1 /* option length */
133#define IPOPT_OFFSET 2 /* offset within option */
134#define IPOPT_MINOFF 4 /* min value of above */
135
136/*
137 * Time stamp option structure.
138 */
139struct ip_timestamp {
140 u_char ipt_code; /* IPOPT_TS */
141 u_char ipt_len; /* size of structure (variable) */
142 u_char ipt_ptr; /* index of current entry */
143#if BYTE_ORDER == LITTLE_ENDIAN
144 u_int ipt_flg:4, /* flags, see below */
145 ipt_oflw:4; /* overflow counter */
146#endif
147#if BYTE_ORDER == BIG_ENDIAN
148 u_int ipt_oflw:4, /* overflow counter */
149 ipt_flg:4; /* flags, see below */
150#endif
151 union ipt_timestamp {
152 n_long ipt_time[1];
153 struct ipt_ta {
154 struct in_addr ipt_addr;
155 n_long ipt_time;
156 } ipt_ta[1];
157 } ipt_timestamp;
158};
159
160/* flag bits for ipt_flg */
161#define IPOPT_TS_TSONLY 0 /* timestamps only */
162#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
163#define IPOPT_TS_PRESPEC 3 /* specified modules only */
164
165/* bits for security (not byte swapped) */
166#define IPOPT_SECUR_UNCLASS 0x0000
167#define IPOPT_SECUR_CONFID 0xf135
168#define IPOPT_SECUR_EFTO 0x789a
169#define IPOPT_SECUR_MMMM 0xbc4d
170#define IPOPT_SECUR_RESTR 0xaf13
171#define IPOPT_SECUR_SECRET 0xd788
172#define IPOPT_SECUR_TOPSECRET 0x6bc5
173
174/*
175 * Internet implementation parameters.
176 */
177#define MAXTTL 255 /* maximum time to live (seconds) */
178#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
179#define IPFRAGTTL 60 /* time to live for frags, slowhz */
180#define IPTTLDEC 1 /* subtracted when forwarding */
181
182#define IP_MSS 576 /* default maximum segment size */
183
184#endif
| 97/*
98 * Definitions for IP precedence (also in ip_tos) (hopefully unused)
99 */
100#define IPTOS_PREC_NETCONTROL 0xe0
101#define IPTOS_PREC_INTERNETCONTROL 0xc0
102#define IPTOS_PREC_CRITIC_ECP 0xa0
103#define IPTOS_PREC_FLASHOVERRIDE 0x80
104#define IPTOS_PREC_FLASH 0x60
105#define IPTOS_PREC_IMMEDIATE 0x40
106#define IPTOS_PREC_PRIORITY 0x20
107#define IPTOS_PREC_ROUTINE 0x00
108
109/*
110 * Definitions for options.
111 */
112#define IPOPT_COPIED(o) ((o)&0x80)
113#define IPOPT_CLASS(o) ((o)&0x60)
114#define IPOPT_NUMBER(o) ((o)&0x1f)
115
116#define IPOPT_CONTROL 0x00
117#define IPOPT_RESERVED1 0x20
118#define IPOPT_DEBMEAS 0x40
119#define IPOPT_RESERVED2 0x60
120
121#define IPOPT_EOL 0 /* end of option list */
122#define IPOPT_NOP 1 /* no operation */
123
124#define IPOPT_RR 7 /* record packet route */
125#define IPOPT_TS 68 /* timestamp */
126#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
127#define IPOPT_LSRR 131 /* loose source route */
128#define IPOPT_SATID 136 /* satnet id */
129#define IPOPT_SSRR 137 /* strict source route */
130#define IPOPT_RA 148 /* router alert */
131
132/*
133 * Offsets to fields in options other than EOL and NOP.
134 */
135#define IPOPT_OPTVAL 0 /* option ID */
136#define IPOPT_OLEN 1 /* option length */
137#define IPOPT_OFFSET 2 /* offset within option */
138#define IPOPT_MINOFF 4 /* min value of above */
139
140/*
141 * Time stamp option structure.
142 */
143struct ip_timestamp {
144 u_char ipt_code; /* IPOPT_TS */
145 u_char ipt_len; /* size of structure (variable) */
146 u_char ipt_ptr; /* index of current entry */
147#if BYTE_ORDER == LITTLE_ENDIAN
148 u_int ipt_flg:4, /* flags, see below */
149 ipt_oflw:4; /* overflow counter */
150#endif
151#if BYTE_ORDER == BIG_ENDIAN
152 u_int ipt_oflw:4, /* overflow counter */
153 ipt_flg:4; /* flags, see below */
154#endif
155 union ipt_timestamp {
156 n_long ipt_time[1];
157 struct ipt_ta {
158 struct in_addr ipt_addr;
159 n_long ipt_time;
160 } ipt_ta[1];
161 } ipt_timestamp;
162};
163
164/* flag bits for ipt_flg */
165#define IPOPT_TS_TSONLY 0 /* timestamps only */
166#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
167#define IPOPT_TS_PRESPEC 3 /* specified modules only */
168
169/* bits for security (not byte swapped) */
170#define IPOPT_SECUR_UNCLASS 0x0000
171#define IPOPT_SECUR_CONFID 0xf135
172#define IPOPT_SECUR_EFTO 0x789a
173#define IPOPT_SECUR_MMMM 0xbc4d
174#define IPOPT_SECUR_RESTR 0xaf13
175#define IPOPT_SECUR_SECRET 0xd788
176#define IPOPT_SECUR_TOPSECRET 0x6bc5
177
178/*
179 * Internet implementation parameters.
180 */
181#define MAXTTL 255 /* maximum time to live (seconds) */
182#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
183#define IPFRAGTTL 60 /* time to live for frags, slowhz */
184#define IPTTLDEC 1 /* subtracted when forwarding */
185
186#define IP_MSS 576 /* default maximum segment size */
187
188#endif
|