freebsd-dev/sys/netinet/in_systm.h

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * 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. 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.
 *
 *	@(#)in_systm.h	8.1 (Berkeley) 6/10/93
 * $FreeBSD$
 */

#ifndef _NETINET_IN_SYSTM_H_
#define _NETINET_IN_SYSTM_H_

/*
 * Miscellaneous internetwork
 * definitions for kernel.
 */

/*
 * Network types.
 *
 * Internally the system keeps counters in the headers with the bytes
 * swapped so that VAX instructions will work on them.  It reverses
 * the bytes before transmission at each protocol level.  The n_ types
 * represent the types with the bytes in ``high-ender'' order. Network
 * byte order is usually referered to as big-endian these days rather
 * than high-ender, which sadly invokes an Orson Scott Card novel, or
 * worse, the movie.
 */
typedef u_int16_t n_short;		/* short as received from the net */
typedef u_int32_t n_long;		/* long as received from the net */

typedef	u_int32_t n_time;		/* ms since 00:00 UTC, byte rev */

#ifdef _KERNEL
struct inpcb;
struct ucred;

int	cr_canseeinpcb(struct ucred *cred, struct inpcb *inp);

uint32_t	 iptime(void);
#endif

#endif
/* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00			`/*-`
sys: further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point. 2017-11-20 19:43:44 +00:00			`* SPDX-License-Identifier: BSD-3-Clause`
			`*`
BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00			`* 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.`
Renumber copyright clause 4 Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96 2017-02-28 23:42:47 +00:00			`* 3. Neither the name of the University nor the names of its contributors`
BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00			`* 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.`
			`*`
			`* @(#)in_systm.h 8.1 (Berkeley) 6/10/93`
$Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00			`* $FreeBSD$`
BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00			`*/`

Made idempotent. Submitted by: Paul 1994-08-21 05:27:42 +00:00			`#ifndef _NETINET_IN_SYSTM_H_`
			`#define _NETINET_IN_SYSTM_H_`

BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00			`/*`
			`* Miscellaneous internetwork`
			`* definitions for kernel.`
			`*/`

			`/*`
			`* Network types.`
			`*`
			`* Internally the system keeps counters in the headers with the bytes`
			`* swapped so that VAX instructions will work on them. It reverses`
			`* the bytes before transmission at each protocol level. The n_ types`
Where appropriate, use the modern terms for the one true time base (UTC) rather than the archaic (GMT) in comments. Except where the comments are making fun of people doing this (and pedants who insist on the new terms). 2014-12-21 05:07:11 +00:00			* represent the types with the bytes in ``high-ender'' order. Network
			`* byte order is usually referered to as big-endian these days rather`
			`* than high-ender, which sadly invokes an Orson Scott Card novel, or`
			`* worse, the movie.`
BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00			`*/`
Declare n_short, n_long and n_time as fixed-sized types. Don't ifdef n_long or n_short specially for alphas. 1998-07-13 10:54:24 +00:00			`typedef u_int16_t n_short; /* short as received from the net */`
			`typedef u_int32_t n_long; /* long as received from the net */`
This commit fixes various 64bit portability problems required for FreeBSD/alpha. The most significant item is to change the command argument to ioctl functions from int to u_long. This change brings us inline with various other BSD versions. Driver writers may like to use (__FreeBSD_version == 300003) to detect this change. The prototype FreeBSD/alpha machdep will follow in a couple of days time. 1998-06-07 17:13:14 +00:00
Where appropriate, use the modern terms for the one true time base (UTC) rather than the archaic (GMT) in comments. Except where the comments are making fun of people doing this (and pedants who insist on the new terms). 2014-12-21 05:07:11 +00:00			`typedef u_int32_t n_time; /* ms since 00:00 UTC, byte rev */`
This commit fixes various 64bit portability problems required for FreeBSD/alpha. The most significant item is to change the command argument to ioctl functions from int to u_long. This change brings us inline with various other BSD versions. Driver writers may like to use (__FreeBSD_version == 300003) to detect this change. The prototype FreeBSD/alpha machdep will follow in a couple of days time. 1998-06-07 17:13:14 +00:00
Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come. 1999-12-29 04:46:21 +00:00			`#ifdef _KERNEL`
Prepare for network stack as a module - Move cr_canseeinpcb to sys/netinet/in_prot.c in order to separate the INET and INET6-specific code from the rest of the prot code (It is only used by the network stack, so it makes sense for it to live with the other network stack code.) - Move cr_canseeinpcb prototype from sys/systm.h to netinet/in_systm.h - Rename cr_seeotheruids to cr_canseeotheruids and cr_seeothergids to cr_canseeothergids, make them non-static, and add prototypes (so they can be seen/called by in_prot.c functions.) - Remove sw_csum variable from ip6_forward in ip6_forward.c, as it is an unused variable. Reviewed by: gnn, jtl Approved by: sjg (mentor) Sponsored by: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D2901 2016-07-27 20:34:09 +00:00			`struct inpcb;`
			`struct ucred;`

			`int cr_canseeinpcb(struct ucred cred, struct inpcb inp);`

Use uint32_t instead of n_long and n_time, and uint16_t instead of n_short. Add a note next to fields in network format. The n_* types are not enough for compiler checks on endianness, and their use often requires an otherwise unnecessary #include <netinet/in_systm.h> The typedef in in_systm.h are still there. 2009-02-13 15:14:43 +00:00			`uint32_t iptime(void);`
BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00			`#endif`
Made idempotent. Submitted by: Paul 1994-08-21 05:27:42 +00:00
			`#endif`