FreeBSD kernel IPv4 code
in_systm.h
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1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1982, 1986, 1993
5  * The Regents of the University of California. All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  * may be used to endorse or promote products derived from this software
17  * without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  *
31  * @(#)in_systm.h 8.1 (Berkeley) 6/10/93
32  * $FreeBSD: head/sys/netinet/in_systm.h 326023 2017-11-20 19:43:44Z pfg $
33  */
34 
35 #ifndef _NETINET_IN_SYSTM_H_
36 #define _NETINET_IN_SYSTM_H_
37 
38 /*
39  * Miscellaneous internetwork
40  * definitions for kernel.
41  */
42 
43 /*
44  * Network types.
45  *
46  * Internally the system keeps counters in the headers with the bytes
47  * swapped so that VAX instructions will work on them. It reverses
48  * the bytes before transmission at each protocol level. The n_ types
49  * represent the types with the bytes in ``high-ender'' order. Network
50  * byte order is usually referered to as big-endian these days rather
51  * than high-ender, which sadly invokes an Orson Scott Card novel, or
52  * worse, the movie.
53  */
54 typedef u_int16_t n_short; /* short as received from the net */
55 typedef u_int32_t n_long; /* long as received from the net */
56 
57 typedef u_int32_t n_time; /* ms since 00:00 UTC, byte rev */
58 
59 #ifdef _KERNEL
60 struct inpcb;
61 struct ucred;
62 
63 int cr_canseeinpcb(struct ucred *cred, struct inpcb *inp);
64 
65 uint32_t iptime(void);
66 #endif
67 
68 #endif
int cr_canseeinpcb(struct ucred *cred, struct inpcb *inp)
Definition: in_prot.c:59
Definition: in_pcb.h:236
u_int32_t n_long
Definition: in_systm.h:55
uint32_t iptime(void)
u_int32_t n_time
Definition: in_systm.h:57
u_int16_t n_short
Definition: in_systm.h:54
__uint32_t uint32_t
Definition: in.h:62