1/*	$NetBSD: portalgo.h,v 1.3 2022/10/28 05:18:39 ozaki-r Exp $	*/
2
3/*
4 * Copyright 2011 Vlad Balan
5 *
6 * Written by Vlad Balan for the NetBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 */
30#ifndef _NETINET_PORTALGO_H_
31#define _NETINET_PORTALGO_H_
32
33#ifdef _KERNEL
34#include <sys/sysctl.h>
35
36struct inpcb;
37int portalgo_randport(uint16_t *, struct inpcb *, kauth_cred_t);
38int sysctl_portalgo_selected4(SYSCTLFN_ARGS);
39int sysctl_portalgo_selected6(SYSCTLFN_ARGS);
40int sysctl_portalgo_reserve4(SYSCTLFN_ARGS);
41int sysctl_portalgo_reserve6(SYSCTLFN_ARGS);
42int sysctl_portalgo_available(SYSCTLFN_ARGS);
43int portalgo_algo_index_select(struct inpcb *, int);
44
45#define	PORTALGO_MAXLEN       16
46#endif /* _KERNEL */
47
48/*
49 * User-settable options (used with setsockopt).
50 */
51#define	PORTALGO_DEFAULT		0xffff
52#define	PORTALGO_BSD			0
53#define	PORTALGO_RANDOM_START		1
54#define	PORTALGO_RANDOM_PICK		2
55#define	PORTALGO_HASH			3
56#define	PORTALGO_DOUBLEHASH		4
57#define	PORTALGO_RANDINC		5
58
59#endif /* !_NETINET_PORTALGO_H_ */
60