nataraid(4): Add devstat support.
[dragonfly.git] / sys / net / pfil.h
CommitLineData
9e99d0a2 1/* $NetBSD: pfil.h,v 1.22 2003/06/23 12:57:08 martin Exp $ */
77e0b69a 2/* $DragonFly: src/sys/net/pfil.h,v 1.11 2008/09/20 06:08:13 sephe Exp $ */
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3
4/*
5 * Copyright (c) 1996 Matthew R. Green
6 * All rights reserved.
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 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 * 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
32#ifndef _NET_PFIL_H_
33#define _NET_PFIL_H_
34
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35#ifndef _SYS_TYPES_H_
36#include <sys/types.h>
37#endif
38#ifndef _SYS_PARAM_H_
39#include <sys/param.h>
40#endif
41#ifndef _SYS_QUEUE_H_
9e99d0a2 42#include <sys/queue.h>
1bd40720 43#endif
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44
45struct mbuf;
46struct ifnet;
caa0af9f 47struct packet_filter_hook;
9e99d0a2 48
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49typedef int (*pfil_func_t)(void *, struct mbuf **, struct ifnet *, int);
50
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51#define PFIL_IN 0x00000001
52#define PFIL_OUT 0x00000002
77e0b69a 53#define PFIL_MPSAFE 0x00000004
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54#define PFIL_ALL (PFIL_IN|PFIL_OUT)
55
56typedef TAILQ_HEAD(pfil_list, packet_filter_hook) pfil_list_t;
57
58#define PFIL_TYPE_AF 1 /* key is AF_* type */
59#define PFIL_TYPE_IFNET 2 /* key is ifnet pointer */
60
61struct pfil_head {
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62 pfil_list_t *ph_in;
63 pfil_list_t *ph_out;
9e99d0a2 64 int ph_type;
afabe90c 65 int ph_hashooks; /* 0 if no hooks installed */
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66 union {
67 u_long phu_val;
68 void *phu_ptr;
69 } ph_un;
70#define ph_af ph_un.phu_val
71#define ph_ifnet ph_un.phu_ptr
72 LIST_ENTRY(pfil_head) ph_list;
73};
74typedef struct pfil_head pfil_head_t;
75
afabe90c 76int pfil_run_hooks(struct pfil_head *, struct mbuf **, struct ifnet *, int);
9e99d0a2 77
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78int pfil_add_hook(pfil_func_t, void *, int, struct pfil_head *);
79int pfil_remove_hook(pfil_func_t, void *, int, struct pfil_head *);
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80
81int pfil_head_register(struct pfil_head *);
82int pfil_head_unregister(struct pfil_head *);
83
84struct pfil_head *pfil_head_get(int, u_long);
85
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86/*
87 * Used for a quick shortcut around the pfil routines if no hooks have been
88 * installed.
89 */
90static __inline int
91pfil_has_hooks(struct pfil_head *ph)
92{
93 return(ph->ph_hashooks);
94}
95
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96/* XXX */
97#if defined(_KERNEL_OPT)
98#include "ipfilter.h"
99#endif
100
9e99d0a2 101#endif /* _NET_PFIL_H_ */