1/*	$FreeBSD$	*/
2
3/*
4 * Copyright (C) 2012 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 __P((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 __P((struct lkm_table *, int));
78
79#if defined(__FreeBSD_version) && (__FreeBSD_version < 220000)
80
81int xxxinit(lkmtp, cmd, ver)
82	struct lkm_table *lkmtp;
83	int cmd, ver;
84{
85	DISPATCH(lkmtp, cmd, ver, ipfrule_ioctl, ipfrule_ioctl, ipfrule_ioctl);
86}
87#else	/* __FREEBSD_version >= 220000 */
88# ifdef	IPFILTER_LKM
89#  include <sys/exec.h>
90
91#  if (__FreeBSD_version >= 300000)
92MOD_MISC(ipfrule);
93#  else
94MOD_DECL(ipfrule);
95
96
97static struct lkm_misc _module = {
98	LM_MISC,
99	LKM_VERSION,
100	"IP Filter rules",
101	0,
102};
103#  endif
104
105
106int ipfrule __P((struct lkm_table *, int, int));
107
108
109int ipfrule(lkmtp, cmd, ver)
110	struct lkm_table *lkmtp;
111	int cmd, ver;
112{
113#  if (__FreeBSD_version >= 300000)
114	MOD_DISPATCH(ipfrule, lkmtp, cmd, ver, ipfrule_ioctl, ipfrule_ioctl,
115		     ipfrule_ioctl);
116#  else
117	DISPATCH(lkmtp, cmd, ver, ipfrule_ioctl, ipfrule_ioctl, ipfrule_ioctl);
118#  endif
119}
120# endif /* IPFILTER_LKM */
121
122
123int ipfrule_load(lkmtp, cmd)
124	struct lkm_table *lkmtp;
125	int cmd;
126{
127	return ipfrule_add();
128}
129
130
131int ipfrule_unload(lkmtp, cmd)
132	struct lkm_table *lkmtp;
133	int cmd;
134{
135	return ipfrule_remove();
136}
137
138
139static int ipfrule_ioctl(lkmtp, cmd)
140	struct lkm_table *lkmtp;
141	int cmd;
142{
143	int err = 0;
144
145	switch (cmd)
146	{
147	case LKM_E_LOAD :
148		if (lkmexists(lkmtp))
149			return EEXIST;
150
151		err = ipfrule_load(lkmtp, cmd);
152		if (!err)
153			ipf_refcnt++;
154		break;
155	case LKM_E_UNLOAD :
156		err = ipfrule_unload(lkmtp, cmd);
157		if (!err)
158			ipf_refcnt--;
159		break;
160	case LKM_E_STAT :
161		break;
162	default:
163		err = EIO;
164		break;
165	}
166	return err;
167}
168#endif /* _FreeBSD_version */
169