1/*	$NetBSD: mlf_rule.c,v 1.3 2012/02/15 17:55:04 riz Exp $	*/
2
3/*
4 * Copyright (C) 1993-2001 by Darren Reed.
5 *
6 * See the IPFILTER.LICENCE file for details on licencing.
7 */
8/*
9 * 29/12/94 Added code from Marc Huber <huber@fzi.de> to allow it to allocate
10 * its own major char number! Way cool patch!
11 */
12
13
14#include <sys/param.h>
15
16#if defined(__FreeBSD__) && (__FreeBSD__ > 1)
17# ifdef	IPFILTER_LKM
18#  include <osreldate.h>
19#  define	ACTUALLY_LKM_NOT_KERNEL
20# else
21#  include <sys/osreldate.h>
22# endif
23#endif
24#include <sys/systm.h>
25#if defined(__FreeBSD_version) && (__FreeBSD_version >= 220000)
26# include <sys/conf.h>
27# include <sys/kernel.h>
28# ifdef DEVFS
29#  include <sys/devfsext.h>
30# endif /*DEVFS*/
31#endif
32#include <sys/conf.h>
33#include <sys/file.h>
34#if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000)
35# include <sys/lock.h>
36#endif
37#include <sys/stat.h>
38#include <sys/proc.h>
39#include <sys/kernel.h>
40#include <sys/vnode.h>
41#include <sys/namei.h>
42#include <sys/malloc.h>
43#include <sys/mount.h>
44#include <sys/exec.h>
45#include <sys/mbuf.h>
46#if	BSD >= 199506
47# include <sys/sysctl.h>
48#endif
49#if (__FreeBSD_version >= 300000)
50# include <sys/socket.h>
51#endif
52#if (__FreeBSD_version >= 199511)
53#include <net/if.h>
54#include <netinet/in_systm.h>
55#include <netinet/in.h>
56#include <netinet/ip.h>
57#include <net/route.h>
58#include <netinet/ip_var.h>
59#include <netinet/tcp.h>
60#include <netinet/tcpip.h>
61#endif
62#if (__FreeBSD__ > 1)
63# include <sys/sysent.h>
64#endif
65#include <sys/lkm.h>
66#include "netinet/ip_compat.h"
67#include "netinet/ip_fil.h"
68#include "netinet/ip_rules.h"
69
70
71int	xxxinit(struct lkm_table *, int, int);
72
73#if !defined(__FreeBSD_version) || (__FreeBSD_version < 220000)
74MOD_DEV(IPL_VERSION, LM_DT_CHAR, -1, &ipldevsw);
75#endif
76
77static int ipfrule_ioctl(struct lkm_table *, int);
78
79#if defined(__FreeBSD_version) && (__FreeBSD_version < 220000)
80
81int
82xxxinit(struct lkm_table *lkmtp, int cmd, int ver)
83{
84	DISPATCH(lkmtp, cmd, ver, ipfrule_ioctl, ipfrule_ioctl, ipfrule_ioctl);
85}
86#else	/* __FREEBSD_version >= 220000 */
87# ifdef	IPFILTER_LKM
88#  include <sys/exec.h>
89
90#  if (__FreeBSD_version >= 300000)
91MOD_MISC(ipfrule);
92#  else
93MOD_DECL(ipfrule);
94
95
96static struct lkm_misc _module = {
97	LM_MISC,
98	LKM_VERSION,
99	"IP Filter rules",
100	0,
101};
102#  endif
103
104
105int ipfrule(struct lkm_table *, int, int);
106
107
108int
109ipfrule(struct lkm_table *lkmtp, int cmd, int ver)
110{
111#  if (__FreeBSD_version >= 300000)
112	MOD_DISPATCH(ipfrule, lkmtp, cmd, ver, ipfrule_ioctl, ipfrule_ioctl,
113		     ipfrule_ioctl);
114#  else
115	DISPATCH(lkmtp, cmd, ver, ipfrule_ioctl, ipfrule_ioctl, ipfrule_ioctl);
116#  endif
117}
118# endif /* IPFILTER_LKM */
119
120
121int
122ipfrule_load(struct lkm_table *lkmtp, int cmd)
123{
124	return ipfrule_add();
125}
126
127
128int
129ipfrule_unload(struct lkm_table *lkmtp, int cmd)
130{
131	return ipfrule_remove();
132}
133
134
135static int
136ipfrule_ioctl(struct lkm_table *lkmtp, int cmd)
137{
138	int err = 0;
139
140	switch (cmd)
141	{
142	case LKM_E_LOAD :
143		if (lkmexists(lkmtp))
144			return EEXIST;
145
146		err = ipfrule_load(lkmtp, cmd);
147		if (!err)
148			fr_refcnt++;
149		break;
150	case LKM_E_UNLOAD :
151		err = ipfrule_unload(lkmtp, cmd);
152		if (!err)
153			fr_refcnt--;
154		break;
155	case LKM_E_STAT :
156		break;
157	default:
158		err = EIO;
159		break;
160	}
161	return err;
162}
163#endif /* _FreeBSD_version */
164