xref: /netbsd/sys/external/bsd/ipf/netinet/ip_fil.h (revision 5578004b)
1 /*	$NetBSD: ip_fil.h,v 1.8 2019/11/11 19:33:43 chs Exp $	*/
2 
3 /*
4  * Copyright (C) 2012 by Darren Reed.
5  *
6  * See the IPFILTER.LICENCE file for details on licencing.
7  *
8  * @(#)ip_fil.h	1.35 6/5/96
9  * Id: ip_fil.h,v 1.1.1.2 2012/07/22 13:45:13 darrenr Exp
10  */
11 
12 #ifndef _NETINET_IP_FIL_H_
13 #define _NETINET_IP_FIL_H_
14 
15 #include "netinet/ip_compat.h"
16 #include "netinet/ipf_rb.h"
17 #if NETBSD_GE_REV(104040000)
18 # include <sys/callout.h>
19 #endif
20 #if defined(BSD) && defined(_KERNEL)
21 # if NETBSD_LT_REV(399000000) || defined(__osf__) || FREEBSD_LT_REV(500043)
22 #  include <sys/select.h>
23 # else
24 #  include <sys/selinfo.h>
25 # endif
26 #endif
27 
28 #if !defined(linux) || !defined(_KERNEL)
29 # include <netinet/in.h>
30 #endif
31 
32 #ifndef	SOLARIS
33 # if (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
34 #  define SOLARIS	1
35 # else
36 #  define SOLARIS	0
37 # endif
38 #endif
39 
40 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51)
41 # define	SIOCADAFR	_IOW('r', 60, struct ipfobj)
42 # define	SIOCRMAFR	_IOW('r', 61, struct ipfobj)
43 # define	SIOCSETFF	_IOW('r', 62, u_int)
44 # define	SIOCGETFF	_IOR('r', 63, u_int)
45 # define	SIOCGETFS	_IOWR('r', 64, struct ipfobj)
46 # define	SIOCIPFFL	_IOWR('r', 65, int)
47 # define	SIOCIPFFB	_IOR('r', 66, int)
48 # define	SIOCADIFR	_IOW('r', 67, struct ipfobj)
49 # define	SIOCRMIFR	_IOW('r', 68, struct ipfobj)
50 # define	SIOCSWAPA	_IOR('r', 69, u_int)
51 # define	SIOCINAFR	_IOW('r', 70, struct ipfobj)
52 # define	SIOCINIFR	_IOW('r', 71, struct ipfobj)
53 # define	SIOCFRENB	_IOW('r', 72, u_int)
54 # define	SIOCFRSYN	_IOW('r', 73, u_int)
55 # define	SIOCFRZST	_IOWR('r', 74, struct ipfobj)
56 # define	SIOCZRLST	_IOWR('r', 75, struct ipfobj)
57 # define	SIOCAUTHW	_IOWR('r', 76, struct ipfobj)
58 # define	SIOCAUTHR	_IOWR('r', 77, struct ipfobj)
59 # define	SIOCSTAT1	_IOWR('r', 78, struct ipfobj)
60 # define	SIOCSTLCK	_IOWR('r', 79, u_int)
61 # define	SIOCSTPUT	_IOWR('r', 80, struct ipfobj)
62 # define	SIOCSTGET	_IOWR('r', 81, struct ipfobj)
63 # define	SIOCSTGSZ	_IOWR('r', 82, struct ipfobj)
64 # define	SIOCSTAT2	_IOWR('r', 83, struct ipfobj)
65 # define	SIOCSETLG	_IOWR('r', 84, int)
66 # define	SIOCGETLG	_IOWR('r', 85, int)
67 # define	SIOCFUNCL	_IOWR('r', 86, struct ipfunc_resolve)
68 # define	SIOCIPFGETNEXT	_IOWR('r', 87, struct ipfobj)
69 # define	SIOCIPFGET	_IOWR('r', 88, struct ipfobj)
70 # define	SIOCIPFSET	_IOWR('r', 89, struct ipfobj)
71 # define	SIOCIPFL6	_IOWR('r', 90, int)
72 # define	SIOCIPFITER	_IOWR('r', 91, struct ipfobj)
73 # define	SIOCGENITER	_IOWR('r', 92, struct ipfobj)
74 # define	SIOCGTABL	_IOWR('r', 93, struct ipfobj)
75 # define	SIOCIPFDELTOK	_IOWR('r', 94, int)
76 # define	SIOCLOOKUPITER	_IOWR('r', 95, struct ipfobj)
77 # define	SIOCGTQTAB	_IOWR('r', 96, struct ipfobj)
78 # define	SIOCMATCHFLUSH	_IOWR('r', 97, struct ipfobj)
79 # define	SIOCIPFINTERROR	_IOR('r', 98, int)
80 #else
81 # define	SIOCADAFR	_IOW(r, 60, struct ipfobj)
82 # define	SIOCRMAFR	_IOW(r, 61, struct ipfobj)
83 # define	SIOCSETFF	_IOW(r, 62, u_int)
84 # define	SIOCGETFF	_IOR(r, 63, u_int)
85 # define	SIOCGETFS	_IOWR(r, 64, struct ipfobj)
86 # define	SIOCIPFFL	_IOWR(r, 65, int)
87 # define	SIOCIPFFB	_IOR(r, 66, int)
88 # define	SIOCADIFR	_IOW(r, 67, struct ipfobj)
89 # define	SIOCRMIFR	_IOW(r, 68, struct ipfobj)
90 # define	SIOCSWAPA	_IOR(r, 69, u_int)
91 # define	SIOCINAFR	_IOW(r, 70, struct ipfobj)
92 # define	SIOCINIFR	_IOW(r, 71, struct ipfobj)
93 # define	SIOCFRENB	_IOW(r, 72, u_int)
94 # define	SIOCFRSYN	_IOW(r, 73, u_int)
95 # define	SIOCFRZST	_IOWR(r, 74, struct ipfobj)
96 # define	SIOCZRLST	_IOWR(r, 75, struct ipfobj)
97 # define	SIOCAUTHW	_IOWR(r, 76, struct ipfobj)
98 # define	SIOCAUTHR	_IOWR(r, 77, struct ipfobj)
99 # define	SIOCSTAT1	_IOWR(r, 78, struct ipfobj)
100 # define	SIOCSTLCK	_IOWR(r, 79, u_int)
101 # define	SIOCSTPUT	_IOWR(r, 80, struct ipfobj)
102 # define	SIOCSTGET	_IOWR(r, 81, struct ipfobj)
103 # define	SIOCSTGSZ	_IOWR(r, 82, struct ipfobj)
104 # define	SIOCSTAT2	_IOWR(r, 83, struct ipfobj)
105 # define	SIOCSETLG	_IOWR(r, 84, int)
106 # define	SIOCGETLG	_IOWR(r, 85, int)
107 # define	SIOCFUNCL	_IOWR(r, 86, struct ipfunc_resolve)
108 # define	SIOCIPFGETNEXT	_IOWR(r, 87, struct ipfobj)
109 # define	SIOCIPFGET	_IOWR(r, 88, struct ipfobj)
110 # define	SIOCIPFSET	_IOWR(r, 89, struct ipfobj)
111 # define	SIOCIPFL6	_IOWR(r, 90, int)
112 # define	SIOCIPFITER	_IOWR(r, 91, struct ipfobj)
113 # define	SIOCGENITER	_IOWR(r, 92, struct ipfobj)
114 # define	SIOCGTABL	_IOWR(r, 93, struct ipfobj)
115 # define	SIOCIPFDELTOK	_IOWR(r, 94, int)
116 # define	SIOCLOOKUPITER	_IOWR(r, 95, struct ipfobj)
117 # define	SIOCGTQTAB	_IOWR(r, 96, struct ipfobj)
118 # define	SIOCMATCHFLUSH	_IOWR(r, 97, struct ipfobj)
119 # define	SIOCIPFINTERROR	_IOR(r, 98, int)
120 #endif
121 #define	SIOCADDFR	SIOCADAFR
122 #define	SIOCDELFR	SIOCRMAFR
123 #define	SIOCINSFR	SIOCINAFR
124 #define	SIOCATHST	SIOCSTAT1
125 #define	SIOCGFRST	SIOCSTAT2
126 
127 
128 struct ipscan;
129 struct ifnet;
130 struct ipf_main_softc_s;
131 
132 typedef	int	(* lookupfunc_t)(struct ipf_main_softc_s *, void *,
133     int, void *, u_int);
134 
135 /*
136  * i6addr is used as a container for both IPv4 and IPv6 addresses, as well
137  * as other types of objects, depending on its qualifier.
138  */
139 #ifdef	USE_INET6
140 typedef	union	i6addr	{
141 	u_32_t	i6[4];
142 	struct	in_addr	in4;
143 	struct	in6_addr in6;
144 	void	*vptr[2];
145 	lookupfunc_t	lptr[2];
146 	struct {
147 		u_short	type;
148 		u_short	subtype;
149 		int	name;
150 	} i6un;
151 } i6addr_t;
152 #else
153 typedef	union	i6addr	{
154 	u_32_t	i6[4];
155 	struct	in_addr	in4;
156 	void	*vptr[2];
157 	lookupfunc_t	lptr[2];
158 	struct {
159 		u_short	type;
160 		u_short	subtype;
161 		int	name;
162 	} i6un;
163 } i6addr_t;
164 #endif
165 
166 #define in4_addr	in4.s_addr
167 #define	iplookupnum	i6[1]
168 #define	iplookupname	i6un.name
169 #define	iplookuptype	i6un.type
170 #define	iplookupsubtype	i6un.subtype
171 /*
172  * NOTE: These DO overlap the above on 64bit systems and this IS recognised.
173  */
174 #define	iplookupptr	vptr[0]
175 #define	iplookupfunc	lptr[1]
176 
177 /* Avoid casting to a type presuming 64-bit alignment. */
178 #define	I60(x)	(((u_32_t *)(x))[0])
179 #define	I61(x)	(((u_32_t *)(x))[1])
180 #define	I62(x)	(((u_32_t *)(x))[2])
181 #define	I63(x)	(((u_32_t *)(x))[3])
182 #define	HI60(x)	ntohl(((u_32_t *)(x))[0])
183 #define	HI61(x)	ntohl(((u_32_t *)(x))[1])
184 #define	HI62(x)	ntohl(((u_32_t *)(x))[2])
185 #define	HI63(x)	ntohl(((u_32_t *)(x))[3])
186 
187 #define	IP6_EQ(a,b)	((I63(a) == I63(b)) && (I62(a) == I62(b)) && \
188 			 (I61(a) == I61(b)) && (I60(a) == I60(b)))
189 #define	IP6_NEQ(a,b)	((I63(a) != I63(b)) || (I62(a) != I62(b)) || \
190 			 (I61(a) != I61(b)) || (I60(a) != I60(b)))
191 #define IP6_ISZERO(a)   ((I60(a) | I61(a) | I62(a) | I63(a)) == 0)
192 #define IP6_NOTZERO(a)  ((I60(a) | I61(a) | I62(a) | I63(a)) != 0)
193 #define	IP6_ISONES(a)	((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \
194 			 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff))
195 #define	IP6_GT(a,b)	(ntohl(HI60(a)) > ntohl(HI60(b)) || \
196 			 (HI60(a) == HI60(b) && \
197 			  (ntohl(HI61(a)) > ntohl(HI61(b)) || \
198 			   (HI61(a) == HI61(b) && \
199 			    (ntohl(HI62(a)) > ntohl(HI62(b)) || \
200 			     (HI62(a) == HI62(b) && \
201 			      ntohl(HI63(a)) > ntohl(HI63(b))))))))
202 #define	IP6_LT(a,b)	(ntohl(HI60(a)) < ntohl(HI60(b)) || \
203 			 (HI60(a) == HI60(b) && \
204 			  (ntohl(HI61(a)) < ntohl(HI61(b)) || \
205 			   (HI61(a) == HI61(b) && \
206 			    (ntohl(HI62(a)) < ntohl(HI62(b)) || \
207 			     (HI62(a) == HI62(b) && \
208 			      ntohl(HI63(a)) < ntohl(HI63(b))))))))
209 #define	NLADD(n,x)	htonl(ntohl(n) + (x))
210 #define	IP6_INC(a)	\
211 		do { u_32_t *_i6 = (u_32_t *)(a); \
212 		  _i6[3] = NLADD(_i6[3], 1); \
213 		  if (_i6[3] == 0) { \
214 			_i6[2] = NLADD(_i6[2], 1); \
215 			if (_i6[2] == 0) { \
216 				_i6[1] = NLADD(_i6[1], 1); \
217 				if (_i6[1] == 0) { \
218 					_i6[0] = NLADD(_i6[0], 1); \
219 				} \
220 			} \
221 		  } \
222 		} while (0)
223 #define	IP6_ADD(a,x,d)	\
224 		do { i6addr_t *_s = (i6addr_t *)(a); \
225 		  i6addr_t *_d = (i6addr_t *)(d); \
226 		  _d->i6[0] = NLADD(_s->i6[0], x); \
227 		  if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \
228 			_d->i6[1] = NLADD(_d->i6[1], 1); \
229 			if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \
230 				_d->i6[2] = NLADD(_d->i6[2], 1); \
231 				if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \
232 					_d->i6[3] = NLADD(_d->i6[3], 1); \
233 				} \
234 			} \
235 		  } \
236 		} while (0)
237 #define	IP6_AND(a,b,d)	do { i6addr_t *_s1 = (i6addr_t *)(a); \
238 			  i6addr_t *_s2 = (i6addr_t *)(b); \
239 			  i6addr_t *_d = (i6addr_t *)(d); \
240 			  _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \
241 			  _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \
242 			  _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \
243 			  _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \
244 			} while (0)
245 #define	IP6_ANDASSIGN(a,m) \
246 			do { i6addr_t *_d = (i6addr_t *)(a); \
247 			  i6addr_t *_m = (i6addr_t *)(m); \
248 			  _d->i6[0] &= _m->i6[0]; \
249 			  _d->i6[1] &= _m->i6[1]; \
250 			  _d->i6[2] &= _m->i6[2]; \
251 			  _d->i6[3] &= _m->i6[3]; \
252 			} while (0)
253 #define	IP6_MASKEQ(a,m,b) \
254 			(((I60(a) & I60(m)) == I60(b)) && \
255 			 ((I61(a) & I61(m)) == I61(b)) && \
256 			 ((I62(a) & I62(m)) == I62(b)) && \
257 			 ((I63(a) & I63(m)) == I63(b)))
258 #define	IP6_MASKNEQ(a,m,b) \
259 			(((I60(a) & I60(m)) != I60(b)) || \
260 			 ((I61(a) & I61(m)) != I61(b)) || \
261 			 ((I62(a) & I62(m)) != I62(b)) || \
262 			 ((I63(a) & I63(m)) != I63(b)))
263 #define	IP6_MERGE(a,b,c) \
264 			do { i6addr_t *_d, *_s1, *_s2; \
265 			  _d = (i6addr_t *)(a); \
266 			  _s1 = (i6addr_t *)(b); \
267 			  _s2 = (i6addr_t *)(c); \
268 			  _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \
269 			  _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \
270 			  _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \
271 			  _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \
272 			} while (0)
273 #define	IP6_MASK(a,b,c) \
274 			do { i6addr_t *_d, *_s1, *_s2; \
275 			  _d = (i6addr_t *)(a); \
276 			  _s1 = (i6addr_t *)(b); \
277 			  _s2 = (i6addr_t *)(c); \
278 			  _d->i6[0] = _s1->i6[0] & ~_s2->i6[0]; \
279 			  _d->i6[1] = _s1->i6[1] & ~_s2->i6[1]; \
280 			  _d->i6[2] = _s1->i6[2] & ~_s2->i6[2]; \
281 			  _d->i6[3] = _s1->i6[3] & ~_s2->i6[3]; \
282 			} while (0)
283 #define	IP6_SETONES(a)	\
284 			do { i6addr_t *_d = (i6addr_t *)(a); \
285 			  _d->i6[0] = 0xffffffff; \
286 			  _d->i6[1] = 0xffffffff; \
287 			  _d->i6[2] = 0xffffffff; \
288 			  _d->i6[3] = 0xffffffff; \
289 			} while (0)
290 
291 typedef	union ipso_u	{
292 	u_short	ipso_ripso[2];
293 	u_32_t	ipso_doi;
294 } ipso_t;
295 
296 typedef	struct	fr_ip	{
297 	u_32_t	fi_v:4;		/* IP version */
298 	u_32_t	fi_xx:4;	/* spare */
299 	u_32_t	fi_tos:8;	/* IP packet TOS */
300 	u_32_t	fi_ttl:8;	/* IP packet TTL */
301 	u_32_t	fi_p:8;		/* IP packet protocol */
302 	u_32_t	fi_optmsk;	/* bitmask composed from IP options */
303 	i6addr_t fi_src;	/* source address from packet */
304 	i6addr_t fi_dst;	/* destination address from packet */
305 	ipso_t	fi_ipso;	/* IP security options */
306 	u_32_t	fi_flx;		/* packet flags */
307 	u_32_t	fi_tcpmsk;	/* TCP options set/reset */
308 	u_32_t	fi_ports[2];	/* TCP ports */
309 	u_char	fi_tcpf;	/* TCP flags */
310 	u_char	fi_sensitivity;
311 	u_char	fi_xxx[2];	/* pad */
312 } fr_ip_t;
313 
314 /*
315  * For use in fi_flx
316  */
317 #define	FI_TCPUDP	0x0001	/* TCP/UCP implied comparison*/
318 #define	FI_OPTIONS	0x0002
319 #define	FI_FRAG		0x0004
320 #define	FI_SHORT	0x0008
321 #define	FI_NATED	0x0010
322 #define	FI_MULTICAST	0x0020
323 #define	FI_BROADCAST	0x0040
324 #define	FI_MBCAST	0x0080
325 #define	FI_STATE	0x0100
326 #define	FI_BADNAT	0x0200
327 #define	FI_BAD		0x0400
328 #define	FI_OOW		0x0800	/* Out of state window, else match */
329 #define	FI_ICMPERR	0x1000
330 #define	FI_FRAGBODY	0x2000
331 #define	FI_BADSRC	0x4000
332 #define	FI_LOWTTL	0x8000
333 #define	FI_CMP		0x5cfe3	/* Not FI_FRAG,FI_NATED,FI_FRAGTAIL */
334 #define	FI_ICMPCMP	0x0003	/* Flags we can check for ICMP error packets */
335 #define	FI_WITH		0x5effe	/* Not FI_TCPUDP */
336 #define	FI_V6EXTHDR	0x10000
337 #define	FI_COALESCE	0x20000
338 #define	FI_NEWNAT	0x40000
339 #define	FI_ICMPQUERY	0x80000
340 #define	FI_ENCAP	0x100000	/* encap/decap with NAT */
341 #define	FI_AH		0x200000	/* AH header present */
342 #define	FI_DOCKSUM	0x10000000	/* Proxy wants L4 recalculation */
343 #define	FI_NOCKSUM	0x20000000	/* don't do a L4 checksum validation */
344 #define	FI_NOWILD	0x40000000	/* Do not do wildcard searches */
345 #define	FI_IGNORE	0x80000000
346 
347 #define	fi_secmsk	fi_ipso.ipso_ripso[0]
348 #define	fi_auth		fi_ipso.ipso_ripso[1]
349 #define	fi_doi		fi_ipso.ipso_doi
350 #define	fi_saddr	fi_src.in4.s_addr
351 #define	fi_daddr	fi_dst.in4.s_addr
352 #define	fi_srcnum	fi_src.iplookupnum
353 #define	fi_dstnum	fi_dst.iplookupnum
354 #define	fi_srcname	fi_src.iplookupname
355 #define	fi_dstname	fi_dst.iplookupname
356 #define	fi_srctype	fi_src.iplookuptype
357 #define	fi_dsttype	fi_dst.iplookuptype
358 #define	fi_srcsubtype	fi_src.iplookupsubtype
359 #define	fi_dstsubtype	fi_dst.iplookupsubtype
360 #define	fi_srcptr	fi_src.iplookupptr
361 #define	fi_dstptr	fi_dst.iplookupptr
362 #define	fi_srcfunc	fi_src.iplookupfunc
363 #define	fi_dstfunc	fi_dst.iplookupfunc
364 
365 
366 /*
367  * These are both used by the state and NAT code to indicate that one port or
368  * the other should be treated as a wildcard.
369  * NOTE: When updating, check bit masks in ip_state.h and update there too.
370  */
371 #define	SI_W_SPORT	0x00000100
372 #define	SI_W_DPORT	0x00000200
373 #define	SI_WILDP	(SI_W_SPORT|SI_W_DPORT)
374 #define	SI_W_SADDR	0x00000400
375 #define	SI_W_DADDR	0x00000800
376 #define	SI_WILDA	(SI_W_SADDR|SI_W_DADDR)
377 #define	SI_NEWFR	0x00001000
378 #define	SI_CLONE	0x00002000
379 #define	SI_CLONED	0x00004000
380 #define	SI_NEWCLONE	0x00008000
381 
382 typedef	struct {
383 	u_short	fda_ports[2];
384 	u_char	fda_tcpf;		/* TCP header flags (SYN, ACK, etc) */
385 } frdat_t;
386 
387 typedef enum fr_breasons_e {
388 	FRB_BLOCKED = 0,
389 	FRB_LOGFAIL = 1,
390 	FRB_PPSRATE = 2,
391 	FRB_JUMBO = 3,
392 	FRB_MAKEFRIP = 4,
393 	FRB_STATEADD = 5,
394 	FRB_UPDATEIPID = 6,
395 	FRB_LOGFAIL2 = 7,
396 	FRB_DECAPFRIP = 8,
397 	FRB_AUTHNEW = 9,
398 	FRB_AUTHCAPTURE = 10,
399 	FRB_COALESCE = 11,
400 	FRB_PULLUP = 12,
401 	FRB_AUTHFEEDBACK = 13,
402 	FRB_BADFRAG = 14,
403 	FRB_NATV4 = 15,
404 	FRB_NATV6 = 16,
405 } fr_breason_t;
406 
407 #define	FRB_MAX_VALUE	16
408 
409 typedef enum ipf_cksum_e {
410 	FI_CK_BAD = -1,
411 	FI_CK_NEEDED = 0,
412 	FI_CK_SUMOK = 1,
413 	FI_CK_L4PART = 2,
414 	FI_CK_L4FULL = 4
415 } ipf_cksum_t;
416 
417 typedef	struct	fr_info	{
418 	void	*fin_main_soft;
419 	void	*fin_ifp;		/* interface packet is `on' */
420 	struct	frentry *fin_fr;	/* last matching rule */
421 	int	fin_out;		/* in or out ? 1 == out, 0 == in */
422 	fr_ip_t	fin_fi;			/* IP Packet summary */
423 	frdat_t	fin_dat;		/* TCP/UDP ports, ICMP code/type */
424 	int	fin_dlen;		/* length of data portion of packet */
425 	int	fin_plen;
426 	u_32_t	fin_rule;		/* rule # last matched */
427 	u_short	fin_hlen;		/* length of IP header in bytes */
428 	char	fin_group[FR_GROUPLEN];	/* group number, -1 for none */
429 	void	*fin_dp;		/* start of data past IP header */
430 	/*
431 	 * Fields after fin_dp aren't used for compression of log records.
432 	 * fin_fi contains the IP version (fin_family)
433 	 * fin_rule isn't included because adding a new rule can change it but
434 	 * not change fin_fr. fin_rule is the rule number reported.
435 	 * It isn't necessary to include fin_crc because that is checked
436 	 * for explicitly, before calling bcmp.
437 	 */
438 	u_32_t	fin_crc;		/* Simple calculation for logging */
439 	int	fin_family;		/* AF_INET, etc. */
440 	int	fin_icode;		/* ICMP error to return */
441 	int	fin_mtu;		/* MTU input for ICMP need-frag */
442 	int	fin_rev;		/* state only: 1 = reverse */
443 	int	fin_ipoff;		/* # bytes from buffer start to hdr */
444 	u_32_t	fin_id;			/* IP packet id field */
445 	u_short	fin_l4hlen;		/* length of L4 header, if known */
446 	u_short	fin_off;
447 	int	fin_depth;		/* Group nesting depth */
448 	int	fin_error;		/* Error code to return */
449 	ipf_cksum_t	fin_cksum;	/* -1 = bad, 1 = good, 0 = not done */
450 	fr_breason_t	fin_reason;	/* why auto blocked */
451 	u_int	fin_pktnum;
452 	void	*fin_nattag;
453 	struct frdest	*fin_dif;
454 	struct frdest	*fin_tif;
455 	union {
456 		ip_t	*fip_ip;
457 #ifdef USE_INET6
458 		ip6_t	*fip_ip6;
459 #endif
460 	} fin_ipu;
461 	mb_t	**fin_mp;		/* pointer to pointer to mbuf */
462 	mb_t	*fin_m;			/* pointer to mbuf */
463 #ifdef	MENTAT
464 	mb_t	*fin_qfm;		/* pointer to mblk where pkt starts */
465 	void	*fin_qpi;
466 	char	fin_ifname[LIFNAMSIZ];
467 #endif
468 #ifdef	__sgi
469 	void	*fin_hbuf;
470 #endif
471 	void	*fin_fraghdr;		/* pointer to start of ipv6 frag hdr */
472 } fr_info_t;
473 
474 #define	fin_ip		fin_ipu.fip_ip
475 #define	fin_ip6		fin_ipu.fip_ip6
476 #define	fin_v		fin_fi.fi_v
477 #define	fin_p		fin_fi.fi_p
478 #define	fin_flx		fin_fi.fi_flx
479 #define	fin_optmsk	fin_fi.fi_optmsk
480 #define	fin_secmsk	fin_fi.fi_secmsk
481 #define	fin_doi		fin_fi.fi_doi
482 #define	fin_auth	fin_fi.fi_auth
483 #define	fin_src		fin_fi.fi_src.in4
484 #define	fin_saddr	fin_fi.fi_saddr
485 #define	fin_dst		fin_fi.fi_dst.in4
486 #define	fin_daddr	fin_fi.fi_daddr
487 #define	fin_data	fin_fi.fi_ports
488 #define	fin_sport	fin_fi.fi_ports[0]
489 #define	fin_dport	fin_fi.fi_ports[1]
490 #define	fin_tcpf	fin_fi.fi_tcpf
491 #define	fin_src6	fin_fi.fi_src
492 #define	fin_dst6	fin_fi.fi_dst
493 #define	fin_srcip6	fin_fi.fi_src.in6
494 #define	fin_dstip6	fin_fi.fi_dst.in6
495 
496 #define	IPF_IN		0
497 #define	IPF_OUT		1
498 
499 typedef	struct frentry	*(*ipfunc_t)(fr_info_t *, u_32_t *);
500 typedef	int		(*ipfuncinit_t)(struct ipf_main_softc_s *,
501     struct frentry *);
502 
503 typedef	struct	ipfunc_resolve	{
504 	char		ipfu_name[32];
505 	ipfunc_t	ipfu_addr;
506 	ipfuncinit_t	ipfu_init;
507 	ipfuncinit_t	ipfu_fini;
508 } ipfunc_resolve_t;
509 
510 /*
511  * Size for compares on fr_info structures
512  */
513 #define	FI_CSIZE	offsetof(fr_info_t, fin_icode)
514 #define	FI_LCSIZE	offsetof(fr_info_t, fin_dp)
515 
516 /*
517  * Size for copying cache fr_info structure
518  */
519 #define	FI_COPYSIZE	offsetof(fr_info_t, fin_dp)
520 
521 /*
522  * Structure for holding IPFilter's tag information
523  */
524 #define	IPFTAG_LEN	16
525 typedef	struct	{
526 	union	{
527 		u_32_t	iptu_num[4];
528 		char	iptu_tag[IPFTAG_LEN];
529 	} ipt_un;
530 	int	ipt_not;
531 } ipftag_t;
532 
533 #define	ipt_tag	ipt_un.iptu_tag
534 #define	ipt_num	ipt_un.iptu_num
535 
536 /*
537  * Structure to define address for pool lookups.
538  */
539 typedef	struct	{
540 	u_char		adf_len;
541 	sa_family_t	adf_family;
542 	u_char		adf_xxx[2];
543 	i6addr_t	adf_addr;
544 } addrfamily_t;
545 
546 
547 RBI_LINK(ipf_rb, host_node_s);
548 
549 typedef	struct	host_node_s {
550 	RBI_FIELD(ipf_rb)	hn_entry;
551 	addrfamily_t		hn_addr;
552 	int			hn_active;
553 } host_node_t;
554 
555 typedef RBI_HEAD(ipf_rb, host_node_s) ipf_rb_head_t;
556 
557 typedef	struct	host_track_s {
558 	ipf_rb_head_t	ht_root;
559 	int		ht_max_nodes;
560 	int		ht_max_per_node;
561 	int		ht_netmask;
562 	int		ht_cur_nodes;
563 } host_track_t;
564 
565 
566 typedef enum fr_dtypes_e {
567 	FRD_NORMAL = 0,
568 	FRD_DSTLIST
569 } fr_dtypes_t;
570 /*
571  * This structure is used to hold information about the next hop for where
572  * to forward a packet.
573  */
574 typedef	struct	frdest	{
575 	void		*fd_ptr;
576 	addrfamily_t	fd_addr;
577 	fr_dtypes_t	fd_type;
578 	int		fd_name;
579 	int		fd_unused; /* part of the kernel/user ABI */
580 } frdest_t;
581 
582 #define	fd_ip6	fd_addr.adf_addr
583 #define	fd_ip	fd_ip6.in4
584 
585 
586 typedef enum fr_ctypes_e {
587 	FR_NONE = 0,
588 	FR_EQUAL,
589 	FR_NEQUAL,
590 	FR_LESST,
591 	FR_GREATERT,
592 	FR_LESSTE,
593 	FR_GREATERTE,
594 	FR_OUTRANGE,
595 	FR_INRANGE,
596 	FR_INCRANGE
597 } fr_ctypes_t;
598 
599 /*
600  * This structure holds information about a port comparison.
601  */
602 typedef	struct	frpcmp	{
603 	fr_ctypes_t	frp_cmp;	/* data for port comparisons */
604 	u_32_t		frp_port;	/* top port for <> and >< */
605 	u_32_t		frp_top;	/* top port for <> and >< */
606 } frpcmp_t;
607 
608 
609 /*
610  * Structure containing all the relevant TCP things that can be checked in
611  * a filter rule.
612  */
613 typedef	struct	frtuc	{
614 	u_char		ftu_tcpfm;	/* tcp flags mask */
615 	u_char		ftu_tcpf;	/* tcp flags */
616 	frpcmp_t	ftu_src;
617 	frpcmp_t	ftu_dst;
618 } frtuc_t;
619 
620 #define	ftu_scmp	ftu_src.frp_cmp
621 #define	ftu_dcmp	ftu_dst.frp_cmp
622 #define	ftu_sport	ftu_src.frp_port
623 #define	ftu_dport	ftu_dst.frp_port
624 #define	ftu_stop	ftu_src.frp_top
625 #define	ftu_dtop	ftu_dst.frp_top
626 
627 #define	FR_TCPFMAX	0x3f
628 
629 typedef enum fr_atypes_e {
630 	FRI_NONE = -1,	/* For LHS of NAT */
631 	FRI_NORMAL = 0,	/* Normal address */
632 	FRI_DYNAMIC,	/* dynamic address */
633 	FRI_LOOKUP,	/* address is a pool # */
634 	FRI_RANGE,	/* address/mask is a range */
635 	FRI_NETWORK,	/* network address from if */
636 	FRI_BROADCAST,	/* broadcast address from if */
637 	FRI_PEERADDR,	/* Peer address for P-to-P */
638 	FRI_NETMASKED,	/* network address with netmask from if */
639 	FRI_SPLIT,	/* For NAT compatibility */
640 	FRI_INTERFACE	/* address is based on interface name */
641 } fr_atypes_t;
642 
643 /*
644  * This structure makes up what is considered to be the IPFilter specific
645  * matching components of a filter rule, as opposed to the data structures
646  * used to define the result which are in frentry_t and not here.
647  */
648 typedef	struct	fripf	{
649 	fr_ip_t		fri_ip;
650 	fr_ip_t		fri_mip;	/* mask structure */
651 
652 	u_short		fri_icmpm;	/* data for ICMP packets (mask) */
653 	u_short		fri_icmp;
654 
655 	frtuc_t		fri_tuc;
656 	fr_atypes_t	fri_satype;	/* addres type */
657 	fr_atypes_t	fri_datype;	/* addres type */
658 	int		fri_sifpidx;	/* doing dynamic addressing */
659 	int		fri_difpidx;	/* index into fr_ifps[] to use when */
660 } fripf_t;
661 
662 #define	fri_dlookup	fri_mip.fi_dst
663 #define	fri_slookup	fri_mip.fi_src
664 #define	fri_dstnum	fri_mip.fi_dstnum
665 #define	fri_srcnum	fri_mip.fi_srcnum
666 #define	fri_dstname	fri_mip.fi_dstname
667 #define	fri_srcname	fri_mip.fi_srcname
668 #define	fri_dstptr	fri_mip.fi_dstptr
669 #define	fri_srcptr	fri_mip.fi_srcptr
670 
671 
672 typedef enum fr_rtypes_e {
673 	FR_T_NONE = 0,
674 	FR_T_IPF,		/* IPF structures */
675 	FR_T_BPFOPC,		/* BPF opcode */
676 	FR_T_CALLFUNC,		/* callout to function in fr_func only */
677 	FR_T_COMPIPF,			/* compiled C code */
678 	FR_T_IPFEXPR,			/* IPF expression */
679 	FR_T_BUILTIN = 0x40000000,	/* rule is in kernel space */
680 	FR_T_IPF_BUILTIN,
681 	FR_T_BPFOPC_BUILTIN,
682 	FR_T_CALLFUNC_BUILTIN,
683 	FR_T_COMPIPF_BUILTIN,
684 	FR_T_IPFEXPR_BUILTIN
685 } fr_rtypes_t;
686 
687 typedef	struct	frentry	* (* frentfunc_t)(fr_info_t *);
688 
689 typedef	struct	frentry {
690 	ipfmutex_t	fr_lock;
691 	struct	frentry	*fr_next;
692 	struct	frentry	**fr_pnext;
693 	struct	frgroup	*fr_grp;
694 	struct	frgroup	*fr_grphead;
695 	struct	frgroup	*fr_icmpgrp;
696 	struct	ipscan	*fr_isc;
697 	struct	frentry	*fr_dnext;	/* 2 fr_die linked list pointers */
698 	struct	frentry	**fr_pdnext;
699 	void	*fr_ifas[4];
700 	void	*fr_ptr;	/* for use with fr_arg */
701 	int	fr_comment;	/* text comment for rule */
702 	int	fr_size;	/* size of this structure */
703 	int	fr_ref;		/* reference count */
704 	int	fr_statecnt;	/* state count - for limit rules */
705 	u_32_t	fr_die;		/* only used on loading the rule */
706 	u_int	fr_cksum;	/* checksum on filter rules for performance */
707 	/*
708 	 * The line number from a file is here because we need to be able to
709 	 * match the rule generated with ``grep rule ipf.conf | ipf -rf -''
710 	 * with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be
711 	 * on the other side of fr_func.
712 	 */
713 	int	fr_flineno;	/* line number from conf file */
714 	/*
715 	 * These are only incremented when a packet  matches this rule and
716 	 * it is the last match
717 	 */
718 	U_QUAD_T	fr_hits;
719 	U_QUAD_T	fr_bytes;
720 
721 	/*
722 	 * For PPS rate limiting
723 	 * fr_lpu is used to always have the same size for this field,
724 	 * allocating 64bits for seconds and 32bits for milliseconds.
725 	 */
726 	union {
727 		struct timeval	frp_lastpkt;
728 		char	frp_bytes[12];
729 	} fr_lpu;
730 	int		fr_curpps;
731 
732 	union	{
733 		void		*fru_data;
734 		char		*fru_caddr;
735 		fripf_t		*fru_ipf;
736 		frentfunc_t	fru_func;
737 	} fr_dun;
738 
739 	/*
740 	 * Fields after this may not change whilst in the kernel.
741 	 */
742 	ipfunc_t fr_func; 	/* call this function */
743 	int	fr_dsize;
744 	int	fr_pps;
745 	fr_rtypes_t	fr_type;
746 	u_32_t	fr_flags;	/* per-rule flags && options (see below) */
747 	u_32_t	fr_logtag;	/* user defined log tag # */
748 	u_32_t	fr_collect;	/* collection number */
749 	u_int	fr_arg;		/* misc. numeric arg for rule */
750 	u_int	fr_loglevel;	/* syslog log facility + priority */
751 	u_char	fr_family;
752 	u_char	fr_icode;	/* return ICMP code */
753 	int	fr_group;	/* group to which this rule belongs */
754 	int	fr_grhead;	/* group # which this rule starts */
755 	int	fr_ifnames[4];
756 	int	fr_isctag;
757 	int	fr_rpc;		/* XID Filtering */
758 	ipftag_t fr_nattag;
759 	frdest_t fr_tifs[2];	/* "to"/"reply-to" interface */
760 	frdest_t fr_dif;	/* duplicate packet interface */
761 	/*
762 	 * These are all options related to stateful filtering
763 	 */
764 	host_track_t	fr_srctrack;
765 	int	fr_nostatelog;
766 	int	fr_statemax;	/* max reference count */
767 	int	fr_icmphead;	/* ICMP group  for state options */
768 	u_int	fr_age[2];	/* non-TCP state timeouts */
769 	/*
770 	 * How big is the name buffer at the end?
771 	 */
772 	int	fr_namelen;
773 	char	fr_names[1];
774 } frentry_t;
775 
776 #define	fr_lastpkt	fr_lpu.frp_lastpkt
777 #define	fr_caddr	fr_dun.fru_caddr
778 #define	fr_data		fr_dun.fru_data
779 #define	fr_dfunc	fr_dun.fru_func
780 #define	fr_ipf		fr_dun.fru_ipf
781 #define	fr_ip		fr_ipf->fri_ip
782 #define	fr_mip		fr_ipf->fri_mip
783 #define	fr_icmpm	fr_ipf->fri_icmpm
784 #define	fr_icmp		fr_ipf->fri_icmp
785 #define	fr_tuc		fr_ipf->fri_tuc
786 #define	fr_satype	fr_ipf->fri_satype
787 #define	fr_datype	fr_ipf->fri_datype
788 #define	fr_sifpidx	fr_ipf->fri_sifpidx
789 #define	fr_difpidx	fr_ipf->fri_difpidx
790 #define	fr_proto	fr_ip.fi_p
791 #define	fr_mproto	fr_mip.fi_p
792 #define	fr_ttl		fr_ip.fi_ttl
793 #define	fr_mttl		fr_mip.fi_ttl
794 #define	fr_tos		fr_ip.fi_tos
795 #define	fr_mtos		fr_mip.fi_tos
796 #define	fr_tcpfm	fr_tuc.ftu_tcpfm
797 #define	fr_tcpf		fr_tuc.ftu_tcpf
798 #define	fr_scmp		fr_tuc.ftu_scmp
799 #define	fr_dcmp		fr_tuc.ftu_dcmp
800 #define	fr_dport	fr_tuc.ftu_dport
801 #define	fr_sport	fr_tuc.ftu_sport
802 #define	fr_stop		fr_tuc.ftu_stop
803 #define	fr_dtop		fr_tuc.ftu_dtop
804 #define	fr_dst		fr_ip.fi_dst.in4
805 #define	fr_dst6		fr_ip.fi_dst
806 #define	fr_daddr	fr_ip.fi_dst.in4.s_addr
807 #define	fr_src		fr_ip.fi_src.in4
808 #define	fr_src6		fr_ip.fi_src
809 #define	fr_saddr	fr_ip.fi_src.in4.s_addr
810 #define	fr_dmsk		fr_mip.fi_dst.in4
811 #define	fr_dmsk6	fr_mip.fi_dst
812 #define	fr_dmask	fr_mip.fi_dst.in4.s_addr
813 #define	fr_smsk		fr_mip.fi_src.in4
814 #define	fr_smsk6	fr_mip.fi_src
815 #define	fr_smask	fr_mip.fi_src.in4.s_addr
816 #define	fr_dstnum	fr_ip.fi_dstnum
817 #define	fr_srcnum	fr_ip.fi_srcnum
818 #define	fr_dlookup	fr_ip.fi_dst
819 #define	fr_slookup	fr_ip.fi_src
820 #define	fr_dstname	fr_ip.fi_dstname
821 #define	fr_srcname	fr_ip.fi_srcname
822 #define	fr_dsttype	fr_ip.fi_dsttype
823 #define	fr_srctype	fr_ip.fi_srctype
824 #define	fr_dstsubtype	fr_ip.fi_dstsubtype
825 #define	fr_srcsubtype	fr_ip.fi_srcsubtype
826 #define	fr_dstptr	fr_mip.fi_dstptr
827 #define	fr_srcptr	fr_mip.fi_srcptr
828 #define	fr_dstfunc	fr_mip.fi_dstfunc
829 #define	fr_srcfunc	fr_mip.fi_srcfunc
830 #define	fr_optbits	fr_ip.fi_optmsk
831 #define	fr_optmask	fr_mip.fi_optmsk
832 #define	fr_secbits	fr_ip.fi_secmsk
833 #define	fr_secmask	fr_mip.fi_secmsk
834 #define	fr_authbits	fr_ip.fi_auth
835 #define	fr_authmask	fr_mip.fi_auth
836 #define	fr_doi		fr_ip.fi_doi
837 #define	fr_doimask	fr_mip.fi_doi
838 #define	fr_flx		fr_ip.fi_flx
839 #define	fr_mflx		fr_mip.fi_flx
840 #define	fr_ifa		fr_ifas[0]
841 #define	fr_oifa		fr_ifas[2]
842 #define	fr_tif		fr_tifs[0]
843 #define	fr_rif		fr_tifs[1]
844 
845 #define	FR_NOLOGTAG	0
846 
847 #define	FR_CMPSIZ	(sizeof(struct frentry) - \
848 			 offsetof(struct frentry, fr_func))
849 #define	FR_NAME(_f, _n)	(_f)->fr_names + (_f)->_n
850 
851 
852 /*
853  * fr_flags
854  */
855 #define	FR_BLOCK	0x00001	/* do not allow packet to pass */
856 #define	FR_PASS		0x00002	/* allow packet to pass */
857 #define	FR_AUTH		0x00003	/* use authentication */
858 #define	FR_PREAUTH	0x00004	/* require preauthentication */
859 #define	FR_ACCOUNT	0x00005	/* Accounting rule */
860 #define	FR_SKIP		0x00006	/* skip rule */
861 #define	FR_DECAPSULATE	0x00008	/* decapsulate rule */
862 #define	FR_CALL		0x00009	/* call rule */
863 #define	FR_CMDMASK	0x0000f
864 #define	FR_LOG		0x00010	/* Log */
865 #define	FR_LOGB		0x00011	/* Log-fail */
866 #define	FR_LOGP		0x00012	/* Log-pass */
867 #define	FR_LOGMASK	(FR_LOG|FR_CMDMASK)
868 #define	FR_CALLNOW	0x00020	/* call another function (fr_func) if matches */
869 #define	FR_NOTSRCIP	0x00040
870 #define	FR_NOTDSTIP	0x00080
871 #define	FR_QUICK	0x00100	/* match & stop processing list */
872 #define	FR_KEEPFRAG	0x00200	/* keep fragment information */
873 #define	FR_KEEPSTATE	0x00400	/* keep `connection' state information */
874 #define	FR_FASTROUTE	0x00800	/* bypass normal routing */
875 #define	FR_RETRST	0x01000	/* Return TCP RST packet - reset connection */
876 #define	FR_RETICMP	0x02000	/* Return ICMP unreachable packet */
877 #define	FR_FAKEICMP	0x03000	/* Return ICMP unreachable with fake source */
878 #define	FR_OUTQUE	0x04000	/* outgoing packets */
879 #define	FR_INQUE	0x08000	/* ingoing packets */
880 #define	FR_LOGBODY	0x10000	/* Log the body */
881 #define	FR_LOGFIRST	0x20000	/* Log the first byte if state held */
882 #define	FR_LOGORBLOCK	0x40000	/* block the packet if it can't be logged */
883 #define	FR_STLOOSE	0x80000	/* loose state checking */
884 #define	FR_FRSTRICT	0x100000	/* strict frag. cache */
885 #define	FR_STSTRICT	0x200000	/* strict keep state */
886 #define	FR_NEWISN	0x400000	/* new ISN for outgoing TCP */
887 #define	FR_NOICMPERR	0x800000	/* do not match ICMP errors in state */
888 #define	FR_STATESYNC	0x1000000	/* synchronize state to slave */
889 #define	FR_COPIED	0x2000000	/* copied from user space */
890 #define	FR_INACTIVE	0x4000000	/* only used when flush'ing rules */
891 #define	FR_NOMATCH	0x8000000	/* no match occured */
892 		/*	0x10000000 	FF_LOGPASS */
893 		/*	0x20000000 	FF_LOGBLOCK */
894 		/*	0x40000000 	FF_LOGNOMATCH */
895 		/*	0x80000000 	FF_BLOCKNONIP */
896 
897 #define	FR_RETMASK	(FR_RETICMP|FR_RETRST|FR_FAKEICMP)
898 #define	FR_ISBLOCK(x)	(((x) & FR_CMDMASK) == FR_BLOCK)
899 #define	FR_ISPASS(x)	(((x) & FR_CMDMASK) == FR_PASS)
900 #define	FR_ISAUTH(x)	(((x) & FR_CMDMASK) == FR_AUTH)
901 #define	FR_ISPREAUTH(x)	(((x) & FR_CMDMASK) == FR_PREAUTH)
902 #define	FR_ISACCOUNT(x)	(((x) & FR_CMDMASK) == FR_ACCOUNT)
903 #define	FR_ISSKIP(x)	(((x) & FR_CMDMASK) == FR_SKIP)
904 #define	FR_ISDECAPS(x)	(((x) & FR_CMDMASK) == FR_DECAPSULATE)
905 #define	FR_ISNOMATCH(x)	((x) & FR_NOMATCH)
906 #define	FR_INOUT	(FR_INQUE|FR_OUTQUE)
907 
908 /*
909  * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
910  */
911 #define	FF_LOGPASS	0x10000000
912 #define	FF_LOGBLOCK	0x20000000
913 #define	FF_LOGNOMATCH	0x40000000
914 #define	FF_LOGGING	(FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
915 #define	FF_BLOCKNONIP	0x80000000	/* Solaris2 Only */
916 
917 
918 /*
919  * Structure that passes information on what/how to flush to the kernel.
920  */
921 typedef	struct	ipfflush	{
922 	int		ipflu_how;
923 	int		ipflu_arg;
924 } ipfflush_t;
925 
926 
927 /*
928  *
929  */
930 typedef	struct	ipfgetctl	{
931 	u_int		ipfg_min;	/* min value */
932 	u_int		ipfg_current;	/* current value */
933 	u_int		ipfg_max;	/* max value */
934 	u_int		ipfg_default;	/* default value */
935 	u_int		ipfg_steps;	/* value increments */
936 	char		ipfg_name[40];	/* tag name for this control */
937 } ipfgetctl_t;
938 
939 typedef	struct	ipfsetctl	{
940 	int	ipfs_which;	/* 0 = min 1 = current 2 = max 3 = default */
941 	u_int	ipfs_value;	/* min value */
942 	char	ipfs_name[40];	/* tag name for this control */
943 } ipfsetctl_t;
944 
945 
946 /*
947  * Some of the statistics below are in their own counters, but most are kept
948  * in this single structure so that they can all easily be collected and
949  * copied back as required.
950  */
951 typedef	struct	ipf_statistics {
952 	u_long	fr_icmp_coalesce;
953 	u_long	fr_tcp_frag;
954 	u_long	fr_tcp_pullup;
955 	u_long	fr_tcp_short;
956 	u_long	fr_tcp_small;
957 	u_long	fr_tcp_bad_flags;
958 	u_long	fr_udp_pullup;
959 	u_long	fr_ip_freed;
960 	u_long	fr_v6_ah_bad;
961 	u_long	fr_v6_bad;
962 	u_long	fr_v6_badfrag;
963 	u_long	fr_v6_dst_bad;
964 	u_long	fr_v6_esp_pullup;
965 	u_long	fr_v6_ext_short;
966 	u_long	fr_v6_ext_pullup;
967 	u_long	fr_v6_ext_hlen;
968 	u_long	fr_v6_frag_bad;
969 	u_long	fr_v6_frag_pullup;
970 	u_long	fr_v6_frag_size;
971 	u_long	fr_v6_gre_pullup;
972 	u_long	fr_v6_icmp6_pullup;
973 	u_long	fr_v6_rh_bad;
974 	u_long	fr_v6_badttl;	/* TTL in packet doesn't reach minimum */
975 	u_long	fr_v4_ah_bad;
976 	u_long	fr_v4_ah_pullup;
977 	u_long	fr_v4_esp_pullup;
978 	u_long	fr_v4_cipso_bad;
979 	u_long	fr_v4_cipso_tlen;
980 	u_long	fr_v4_gre_frag;
981 	u_long	fr_v4_gre_pullup;
982 	u_long	fr_v4_icmp_frag;
983 	u_long	fr_v4_icmp_pullup;
984 	u_long	fr_v4_badttl;	/* TTL in packet doesn't reach minimum */
985 	u_long	fr_v4_badsrc;	/* source received doesn't match route */
986 	u_long	fr_l4_badcksum;	/* layer 4 header checksum failure */
987 	u_long	fr_badcoalesces;
988 	u_long	fr_pass;	/* packets allowed */
989 	u_long	fr_block;	/* packets denied */
990 	u_long	fr_nom;		/* packets which don't match any rule */
991 	u_long	fr_short;	/* packets which are short */
992 	u_long	fr_ppkl;	/* packets allowed and logged */
993 	u_long	fr_bpkl;	/* packets denied and logged */
994 	u_long	fr_npkl;	/* packets unmatched and logged */
995 	u_long	fr_ret;		/* packets for which a return is sent */
996 	u_long	fr_acct;	/* packets for which counting was performed */
997 	u_long	fr_bnfr;	/* bad attempts to allocate fragment state */
998 	u_long	fr_nfr;		/* new fragment state kept */
999 	u_long	fr_cfr;		/* add new fragment state but complete pkt */
1000 	u_long	fr_bads;	/* bad attempts to allocate packet state */
1001 	u_long	fr_ads;		/* new packet state kept */
1002 	u_long	fr_chit;	/* cached hit */
1003 	u_long	fr_cmiss;	/* cached miss */
1004 	u_long	fr_tcpbad;	/* TCP checksum check failures */
1005 	u_long	fr_pull[2];	/* good and bad pullup attempts */
1006 	u_long	fr_bad;		/* bad IP packets to the filter */
1007 	u_long	fr_ipv6;	/* IPv6 packets in/out */
1008 	u_long	fr_ppshit;	/* dropped because of pps ceiling */
1009 	u_long	fr_ipud;	/* IP id update failures */
1010 	u_long	fr_blocked[FRB_MAX_VALUE + 1];
1011 } ipf_statistics_t;
1012 
1013 /*
1014  * Log structure.  Each packet header logged is prepended by one of these.
1015  * Following this in the log records read from the device will be an ipflog
1016  * structure which is then followed by any packet data.
1017  */
1018 typedef	struct	iplog	{
1019 	u_32_t		ipl_magic;
1020 	u_int		ipl_count;
1021 	u_32_t		ipl_seqnum;
1022 	struct	timeval	ipl_time;
1023 	size_t		ipl_dsize;
1024 	struct	iplog	*ipl_next;
1025 } iplog_t;
1026 
1027 #define	ipl_sec		ipl_time.tv_sec
1028 #define	ipl_usec	ipl_time.tv_usec
1029 
1030 #define IPL_MAGIC	0x49504c4d	/* 'IPLM' */
1031 #define IPL_MAGIC_NAT	0x49504c4e	/* 'IPLN' */
1032 #define IPL_MAGIC_STATE	0x49504c53	/* 'IPLS' */
1033 #define	IPLOG_SIZE	sizeof(iplog_t)
1034 
1035 typedef	struct	ipflog	{
1036 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
1037         (defined(OpenBSD) && (OpenBSD >= 199603))
1038 #else
1039 	u_int	fl_unit;
1040 #endif
1041 	u_32_t		fl_rule;
1042 	u_32_t		fl_flags;
1043 	u_32_t		fl_lflags;
1044 	u_32_t		fl_logtag;
1045 	ipftag_t	fl_nattag;
1046 	u_short		fl_plen;	/* extra data after hlen */
1047 	u_short		fl_loglevel;	/* syslog log level */
1048 	char		fl_group[FR_GROUPLEN];
1049 	u_char		fl_hlen;	/* length of IP headers saved */
1050 	u_char		fl_dir;
1051 	u_char		fl_breason;	/* from fin_reason */
1052 	u_char		fl_family;	/* address family of packet logged */
1053 	char		fl_ifname[LIFNAMSIZ];
1054 } ipflog_t;
1055 
1056 #ifndef	IPF_LOGGING
1057 # define	IPF_LOGGING	0
1058 #endif
1059 #ifndef	IPF_DEFAULT_PASS
1060 # define	IPF_DEFAULT_PASS	FR_PASS
1061 #endif
1062 
1063 #define	DEFAULT_IPFLOGSIZE	32768
1064 #ifndef	IPFILTER_LOGSIZE
1065 # define	IPFILTER_LOGSIZE	DEFAULT_IPFLOGSIZE
1066 #else
1067 # if IPFILTER_LOGSIZE < 8192
1068 #  error IPFILTER_LOGSIZE too small.  Must be >= 8192
1069 # endif
1070 #endif
1071 
1072 #define	IPF_OPTCOPY	0x07ff00	/* bit mask of copied options */
1073 
1074 /*
1075  * Device filenames for reading log information.  Use ipf on Solaris2 because
1076  * ipl is already a name used by something else.
1077  */
1078 #ifndef	IPL_NAME
1079 # if	SOLARIS
1080 #  define	IPL_NAME	"/dev/ipf"
1081 # else
1082 #  define	IPL_NAME	"/dev/ipl"
1083 # endif
1084 #endif
1085 /*
1086  * Pathnames for various IP Filter control devices.  Used by LKM
1087  * and userland, so defined here.
1088  */
1089 #define	IPNAT_NAME	"/dev/ipnat"
1090 #define	IPSTATE_NAME	"/dev/ipstate"
1091 #define	IPAUTH_NAME	"/dev/ipauth"
1092 #define	IPSYNC_NAME	"/dev/ipsync"
1093 #define	IPSCAN_NAME	"/dev/ipscan"
1094 #define	IPLOOKUP_NAME	"/dev/iplookup"
1095 
1096 #define	IPL_LOGIPF	0	/* Minor device #'s for accessing logs */
1097 #define	IPL_LOGNAT	1
1098 #define	IPL_LOGSTATE	2
1099 #define	IPL_LOGAUTH	3
1100 #define	IPL_LOGSYNC	4
1101 #define	IPL_LOGSCAN	5
1102 #define	IPL_LOGLOOKUP	6
1103 #define	IPL_LOGCOUNT	7
1104 #define	IPL_LOGMAX	7
1105 #define	IPL_LOGSIZE	IPL_LOGMAX + 1
1106 #define	IPL_LOGALL	-1
1107 #define	IPL_LOGNONE	-2
1108 
1109 /*
1110  * For SIOCGETFS
1111  */
1112 typedef	struct	friostat	{
1113 	ipf_statistics_t f_st[2];
1114 	frentry_t	*f_ipf[2][2];
1115 	frentry_t	*f_acct[2][2];
1116 	frentry_t	*f_auth;
1117 	struct frgroup	*f_groups[IPL_LOGSIZE][2];
1118 	u_long		f_froute[2];
1119 	u_long		f_log_ok;
1120 	u_long		f_log_fail;
1121 	u_long		f_rb_no_mem;
1122 	u_long		f_rb_node_max;
1123 	u_32_t		f_ticks;
1124 	int		f_locks[IPL_LOGSIZE];
1125 	int		f_defpass;	/* default pass - from fr_pass */
1126 	int		f_active;	/* 1 or 0 - active rule set */
1127 	int		f_running;	/* 1 if running, else 0 */
1128 	int		f_logging;	/* 1 if enabled, else 0 */
1129 	int		f_features;
1130 	char		f_version[32];	/* version string */
1131 } friostat_t;
1132 
1133 #define	f_fin		f_ipf[0]
1134 #define	f_fout		f_ipf[1]
1135 #define	f_acctin	f_acct[0]
1136 #define	f_acctout	f_acct[1]
1137 
1138 #define	IPF_FEAT_LKM		0x001
1139 #define	IPF_FEAT_LOG		0x002
1140 #define	IPF_FEAT_LOOKUP		0x004
1141 #define	IPF_FEAT_BPF		0x008
1142 #define	IPF_FEAT_COMPILED	0x010
1143 #define	IPF_FEAT_CKSUM		0x020
1144 #define	IPF_FEAT_SYNC		0x040
1145 #define	IPF_FEAT_SCAN		0x080
1146 #define	IPF_FEAT_IPV6		0x100
1147 
1148 typedef struct	optlist {
1149 	u_short ol_val;
1150 	int	ol_bit;
1151 } optlist_t;
1152 
1153 
1154 /*
1155  * Group list structure.
1156  */
1157 typedef	struct frgroup {
1158 	struct frgroup	*fg_next;
1159 	struct frentry	*fg_head;
1160 	struct frentry	*fg_start;
1161 	struct frgroup	**fg_set;
1162 	u_32_t		fg_flags;
1163 	int		fg_ref;
1164 	char		fg_name[FR_GROUPLEN];
1165 } frgroup_t;
1166 
1167 #define	FG_NAME(g)	(*(g)->fg_name == '\0' ? "" : (g)->fg_name)
1168 
1169 
1170 /*
1171  * Used by state and NAT tables
1172  */
1173 typedef struct icmpinfo {
1174 	u_short		ici_id;
1175 	u_short		ici_seq;
1176 	u_char		ici_type;
1177 } icmpinfo_t;
1178 
1179 typedef struct udpinfo {
1180 	u_short		us_sport;
1181 	u_short		us_dport;
1182 } udpinfo_t;
1183 
1184 
1185 typedef	struct	tcpdata	{
1186 	u_32_t		td_end;
1187 	u_32_t		td_maxend;
1188 	u_32_t		td_maxwin;
1189 	u_32_t		td_winscale;
1190 	u_32_t		td_maxseg;
1191 	int		td_winflags;
1192 } tcpdata_t;
1193 
1194 #define	TCP_WSCALE_MAX		14
1195 
1196 #define	TCP_WSCALE_SEEN		0x00000001
1197 #define	TCP_WSCALE_FIRST	0x00000002
1198 #define	TCP_SACK_PERMIT		0x00000004
1199 
1200 
1201 typedef	struct tcpinfo {
1202 	u_32_t		ts_sport;
1203 	u_32_t		ts_dport;
1204 	tcpdata_t	ts_data[2];
1205 } tcpinfo_t;
1206 
1207 
1208 /*
1209  * Structures to define a GRE header as seen in a packet.
1210  */
1211 struct	grebits	{
1212 #if defined(sparc)
1213 	u_32_t		grb_ver:3;
1214 	u_32_t		grb_flags:3;
1215 	u_32_t		grb_A:1;
1216 	u_32_t		grb_recur:1;
1217 	u_32_t		grb_s:1;
1218 	u_32_t		grb_S:1;
1219 	u_32_t		grb_K:1;
1220 	u_32_t		grb_R:1;
1221 	u_32_t		grb_C:1;
1222 #else
1223 	u_32_t		grb_C:1;
1224 	u_32_t		grb_R:1;
1225 	u_32_t		grb_K:1;
1226 	u_32_t		grb_S:1;
1227 	u_32_t		grb_s:1;
1228 	u_32_t		grb_recur:1;
1229 	u_32_t		grb_A:1;
1230 	u_32_t		grb_flags:3;
1231 	u_32_t		grb_ver:3;
1232 #endif
1233 	u_short		grb_ptype;
1234 };
1235 
1236 typedef	struct	grehdr	{
1237 	union	{
1238 		struct	grebits	gru_bits;
1239 		u_short	gru_flags;
1240 	} gr_un;
1241 	u_short		gr_len;
1242 	u_short		gr_call;
1243 } grehdr_t;
1244 
1245 #define	gr_flags	gr_un.gru_flags
1246 #define	gr_bits		gr_un.gru_bits
1247 #define	gr_ptype	gr_bits.grb_ptype
1248 #define	gr_C		gr_bits.grb_C
1249 #define	gr_R		gr_bits.grb_R
1250 #define	gr_K		gr_bits.grb_K
1251 #define	gr_S		gr_bits.grb_S
1252 #define	gr_s		gr_bits.grb_s
1253 #define	gr_recur	gr_bits.grb_recur
1254 #define	gr_A		gr_bits.grb_A
1255 #define	gr_ver		gr_bits.grb_ver
1256 
1257 /*
1258  * GRE information tracked by "keep state"
1259  */
1260 typedef	struct	greinfo	{
1261 	u_short		gs_call[2];
1262 	u_short		gs_flags;
1263 	u_short		gs_ptype;
1264 } greinfo_t;
1265 
1266 #define	GRE_REV(x)	((ntohs(x) >> 13) & 7)
1267 
1268 
1269 /*
1270  * Format of an Authentication header
1271  */
1272 typedef	struct	authhdr	{
1273 	u_char		ah_next;
1274 	u_char		ah_plen;
1275 	u_short		ah_reserved;
1276 	u_32_t		ah_spi;
1277 	u_32_t		ah_seq;
1278 	/* Following the sequence number field is 0 or more bytes of */
1279 	/* authentication data, as specified by ah_plen - RFC 2402.  */
1280 } authhdr_t;
1281 
1282 
1283 /*
1284  * Timeout tail queue list member
1285  */
1286 typedef	struct	ipftqent	{
1287 	struct ipftqent **tqe_pnext;
1288 	struct ipftqent *tqe_next;
1289 	struct	ipftq	*tqe_ifq;
1290 	void		*tqe_parent;	/* pointer back to NAT/state struct */
1291 	u_32_t		tqe_die;	/* when this entriy is to die */
1292 	u_32_t		tqe_touched;
1293 	int		tqe_flags;
1294 	int		tqe_state[2];	/* current state of this entry */
1295 } ipftqent_t;
1296 
1297 #define	TQE_RULEBASED	0x00000001
1298 #define	TQE_DELETE	0x00000002
1299 
1300 
1301 /*
1302  * Timeout tail queue head for IPFilter
1303  */
1304 typedef struct  ipftq   {
1305 	ipfmutex_t	ifq_lock;
1306 	u_int		ifq_ttl;
1307 	ipftqent_t	*ifq_head;
1308 	ipftqent_t	**ifq_tail;
1309 	struct ipftq	*ifq_next;
1310 	struct ipftq	**ifq_pnext;
1311 	int		ifq_ref;
1312 	u_int		ifq_flags;
1313 } ipftq_t;
1314 
1315 #define	IFQF_USER	0x01		/* User defined aging */
1316 #define	IFQF_DELETE	0x02		/* Marked for deletion */
1317 #define	IFQF_PROXY	0x04		/* Timeout queue in use by a proxy */
1318 
1319 #define	IPFTQ_INIT(x,y,z)	do {			\
1320 					(x)->ifq_ttl = (y);	\
1321 					(x)->ifq_head = NULL;	\
1322 					(x)->ifq_ref = 1;	\
1323 					(x)->ifq_tail = &(x)->ifq_head; \
1324 					MUTEX_INIT(&(x)->ifq_lock, (z)); \
1325 				} while (0)
1326 
1327 #define	IPF_HZ_MULT	1
1328 #define	IPF_HZ_DIVIDE	2		/* How many times a second ipfilter */
1329 					/* checks its timeout queues.       */
1330 #define	IPF_TTLVAL(x)	(((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE)
1331 
1332 typedef	int	(*ipftq_delete_fn_t)(struct ipf_main_softc_s *, void *);
1333 
1334 
1335 /*
1336  * Object structure description.  For passing through in ioctls.
1337  */
1338 typedef	struct	ipfobj	{
1339 	u_32_t		ipfo_rev;	/* IPFilter version number */
1340 	u_32_t		ipfo_size;	/* size of object at ipfo_ptr */
1341 	void		*ipfo_ptr;	/* pointer to object */
1342 	int		ipfo_type;	/* type of object being pointed to */
1343 	int		ipfo_offset;	/* bytes from ipfo_ptr where to start */
1344 	int		ipfo_retval;	/* return value */
1345 	u_char		ipfo_xxxpad[28];	/* reserved for future use */
1346 } ipfobj_t;
1347 
1348 #define	IPFOBJ_FRENTRY		0	/* struct frentry */
1349 #define	IPFOBJ_IPFSTAT		1	/* struct friostat */
1350 #define	IPFOBJ_IPFINFO		2	/* struct fr_info */
1351 #define	IPFOBJ_AUTHSTAT		3	/* struct fr_authstat */
1352 #define	IPFOBJ_FRAGSTAT		4	/* struct ipfrstat */
1353 #define	IPFOBJ_IPNAT		5	/* struct ipnat */
1354 #define	IPFOBJ_NATSTAT		6	/* struct natstat */
1355 #define	IPFOBJ_STATESAVE	7	/* struct ipstate_save */
1356 #define	IPFOBJ_NATSAVE		8	/* struct nat_save */
1357 #define	IPFOBJ_NATLOOKUP	9	/* struct natlookup */
1358 #define	IPFOBJ_IPSTATE		10	/* struct ipstate */
1359 #define	IPFOBJ_STATESTAT	11	/* struct ips_stat */
1360 #define	IPFOBJ_FRAUTH		12	/* struct frauth */
1361 #define	IPFOBJ_TUNEABLE		13	/* struct ipftune */
1362 #define	IPFOBJ_NAT		14	/* struct nat */
1363 #define	IPFOBJ_IPFITER		15	/* struct ipfruleiter */
1364 #define	IPFOBJ_GENITER		16	/* struct ipfgeniter */
1365 #define	IPFOBJ_GTABLE		17	/* struct ipftable */
1366 #define	IPFOBJ_LOOKUPITER	18	/* struct ipflookupiter */
1367 #define	IPFOBJ_STATETQTAB	19	/* struct ipftq * NSTATES */
1368 #define	IPFOBJ_IPFEXPR		20
1369 #define	IPFOBJ_PROXYCTL		21	/* strct ap_ctl */
1370 #define	IPFOBJ_FRIPF		22	/* structfripf */
1371 #define	IPFOBJ_COUNT		23	/* How many #defines are above this? */
1372 
1373 
1374 typedef	union	ipftunevalptr	{
1375 	void		*ipftp_void;
1376 	u_long		*ipftp_long;
1377 	u_int		*ipftp_int;
1378 	u_short		*ipftp_short;
1379 	u_char		*ipftp_char;
1380 	u_long		ipftp_offset;
1381 } ipftunevalptr_t;
1382 
1383 typedef	union	ipftuneval	{
1384 	u_long		ipftu_long;
1385 	u_int		ipftu_int;
1386 	u_short		ipftu_short;
1387 	u_char		ipftu_char;
1388 } ipftuneval_t;
1389 
1390 struct ipftuneable;
1391 typedef	int (* ipftunefunc_t)(struct ipf_main_softc_s *, struct ipftuneable *,
1392     ipftuneval_t *);
1393 
1394 typedef	struct	ipftuneable	{
1395 	ipftunevalptr_t	ipft_una;
1396 	const char	*ipft_name;
1397 	u_long		ipft_min;
1398 	u_long		ipft_max;
1399 	int		ipft_sz;
1400 	int		ipft_flags;
1401 	struct ipftuneable *ipft_next;
1402 	ipftunefunc_t	ipft_func;
1403 } ipftuneable_t;
1404 
1405 #define	ipft_addr	ipft_una.ipftp_void
1406 #define	ipft_plong	ipft_una.ipftp_long
1407 #define	ipft_pint	ipft_una.ipftp_int
1408 #define	ipft_pshort	ipft_una.ipftp_short
1409 #define	ipft_pchar	ipft_una.ipftp_char
1410 
1411 #define	IPFT_RDONLY	1	/* read-only */
1412 #define	IPFT_WRDISABLED	2	/* write when disabled only */
1413 
1414 typedef	struct	ipftune	{
1415 	void    	*ipft_cookie;
1416 	ipftuneval_t	ipft_un;
1417 	u_long  	ipft_min;
1418 	u_long  	ipft_max;
1419 	int		ipft_sz;
1420 	int		ipft_flags;
1421 	char		ipft_name[80];
1422 } ipftune_t;
1423 
1424 #define	ipft_vlong	ipft_un.ipftu_long
1425 #define	ipft_vint	ipft_un.ipftu_int
1426 #define	ipft_vshort	ipft_un.ipftu_short
1427 #define	ipft_vchar	ipft_un.ipftu_char
1428 
1429 /*
1430  * Hash table header
1431  */
1432 #define	IPFHASH(x,y)	typedef struct { 			\
1433 				ipfrwlock_t	ipfh_lock;	\
1434 				struct	x	*ipfh_head;	\
1435 				} y
1436 
1437 /*
1438 ** HPUX Port
1439 */
1440 #ifdef __hpux
1441 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */
1442 # define	IPF_SMAJ	0	/* temp assignment XXX, not critical */
1443 #endif
1444 
1445 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
1446     (__FreeBSD_version >= 220000)
1447 # define	CDEV_MAJOR	79
1448 #endif
1449 
1450 /*
1451  * Post NetBSD 1.2 has the PFIL interface for packet filters.  This turns
1452  * on those hooks.  We don't need any special mods in non-IP Filter code
1453  * with this!
1454  */
1455 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
1456     (defined(NetBSD1_2) && NetBSD1_2 > 1) || \
1457     (defined(__FreeBSD__) && (__FreeBSD_version >= 500043))
1458 # if (NetBSD >= 199905) && !defined(PFIL_HOOKS)
1459 #  define PFIL_HOOKS
1460 # endif
1461 # ifdef PFIL_HOOKS
1462 #  define NETBSD_PF
1463 # endif
1464 #endif
1465 
1466 #ifdef _KERNEL
1467 # define	FR_VERBOSE(verb_pr)
1468 # define	FR_DEBUG(verb_pr)
1469 #else
1470 extern	void	ipfkdebug(char *, ...);
1471 extern	void	ipfkverbose(char *, ...);
1472 # define	FR_VERBOSE(verb_pr)	ipfkverbose verb_pr
1473 # define	FR_DEBUG(verb_pr)	ipfkdebug verb_pr
1474 #endif
1475 
1476 /*
1477  *
1478  */
1479 typedef	struct	ipfruleiter {
1480 	int		iri_inout;
1481 	char		iri_group[FR_GROUPLEN];
1482 	int		iri_active;
1483 	int		iri_nrules;
1484 	int		iri_v;		/* No longer used (compatibility) */
1485 	frentry_t	*iri_rule;
1486 } ipfruleiter_t;
1487 
1488 /*
1489  * Values for iri_inout
1490  */
1491 #define	F_IN	0
1492 #define	F_OUT	1
1493 #define	F_ACIN	2
1494 #define	F_ACOUT	3
1495 
1496 
1497 typedef	struct	ipfgeniter {
1498 	int	igi_type;
1499 	int	igi_nitems;
1500 	void	*igi_data;
1501 } ipfgeniter_t;
1502 
1503 #define	IPFGENITER_IPF		0
1504 #define	IPFGENITER_NAT		1
1505 #define	IPFGENITER_IPNAT	2
1506 #define	IPFGENITER_FRAG		3
1507 #define	IPFGENITER_AUTH		4
1508 #define	IPFGENITER_STATE	5
1509 #define	IPFGENITER_NATFRAG	6
1510 #define	IPFGENITER_HOSTMAP	7
1511 #define	IPFGENITER_LOOKUP	8
1512 
1513 typedef	struct	ipftable {
1514 	int	ita_type;
1515 	void	*ita_table;
1516 } ipftable_t;
1517 
1518 #define	IPFTABLE_BUCKETS	1
1519 #define	IPFTABLE_BUCKETS_NATIN	2
1520 #define	IPFTABLE_BUCKETS_NATOUT	3
1521 
1522 
1523 typedef struct ipf_v4_masktab_s {
1524 	u_32_t	imt4_active[33];
1525 	int	imt4_masks[33];
1526 	int	imt4_max;
1527 } ipf_v4_masktab_t;
1528 
1529 typedef struct ipf_v6_masktab_s {
1530 	i6addr_t	imt6_active[129];
1531 	int		imt6_masks[129];
1532 	int		imt6_max;
1533 } ipf_v6_masktab_t;
1534 
1535 
1536 /*
1537  *
1538  */
1539 typedef struct ipftoken {
1540 	struct ipftoken	*ipt_next;
1541 	struct ipftoken	**ipt_pnext;
1542 	void		*ipt_ctx;
1543 	void		*ipt_data;
1544 	u_long		ipt_die;
1545 	int		ipt_type;
1546 	int		ipt_uid;
1547 	int		ipt_subtype;
1548 	int		ipt_ref;
1549 	int		ipt_complete;
1550 } ipftoken_t;
1551 
1552 
1553 /*
1554  *
1555  */
1556 typedef struct ipfexp {
1557 	int		ipfe_cmd;
1558 	int		ipfe_not;
1559 	int		ipfe_narg;
1560 	int		ipfe_size;
1561 	int		ipfe_arg0[1];
1562 } ipfexp_t;
1563 
1564 /*
1565  * Currently support commands (ipfe_cmd)
1566  * 32bits is split up follows:
1567  * aabbcccc
1568  * aa = 0 = packet matching, 1 = meta data matching
1569  * bb = IP protocol number
1570  * cccc = command
1571  */
1572 #define	IPF_EXP_IP_PR		0x00000001
1573 #define	IPF_EXP_IP_ADDR		0x00000002
1574 #define	IPF_EXP_IP_SRCADDR	0x00000003
1575 #define	IPF_EXP_IP_DSTADDR	0x00000004
1576 #define	IPF_EXP_IP6_ADDR	0x00000005
1577 #define	IPF_EXP_IP6_SRCADDR	0x00000006
1578 #define	IPF_EXP_IP6_DSTADDR	0x00000007
1579 #define	IPF_EXP_TCP_FLAGS	0x00060001
1580 #define	IPF_EXP_TCP_PORT	0x00060002
1581 #define	IPF_EXP_TCP_SPORT	0x00060003
1582 #define	IPF_EXP_TCP_DPORT	0x00060004
1583 #define	IPF_EXP_UDP_PORT	0x00110002
1584 #define	IPF_EXP_UDP_SPORT	0x00110003
1585 #define	IPF_EXP_UDP_DPORT	0x00110004
1586 #define	IPF_EXP_IDLE_GT		0x01000001
1587 #define	IPF_EXP_TCP_STATE	0x01060002
1588 #define	IPF_EXP_END		0xffffffff
1589 
1590 #define	ONE_DAY			IPF_TTLVAL(1 * 86400)   /* 1 day */
1591 #define	FIVE_DAYS		(5 * ONE_DAY)
1592 
1593 typedef struct ipf_main_softc_s {
1594 	struct ipf_main_softc_s *ipf_next;
1595 	ipfmutex_t	ipf_rw;
1596 	ipfmutex_t      ipf_timeoutlock;
1597 	ipfrwlock_t     ipf_mutex;
1598 	ipfrwlock_t	ipf_frag;
1599 	ipfrwlock_t	ipf_global;
1600 	ipfrwlock_t	ipf_tokens;
1601 	ipfrwlock_t	ipf_state;
1602 	ipfrwlock_t	ipf_nat;
1603 	ipfrwlock_t	ipf_natfrag;
1604 	ipfrwlock_t	ipf_poolrw;
1605 	int		ipf_dynamic_softc;
1606 	int		ipf_refcnt;
1607 	int		ipf_running;
1608 	int		ipf_flags;
1609 	int		ipf_active;
1610 	int		ipf_control_forwarding;
1611 	int		ipf_update_ipid;
1612 	int		ipf_chksrc;	/* causes a system crash if enabled */
1613 	int		ipf_pass;
1614 	int		ipf_minttl;
1615 	int		ipf_icmpminfragmtu;
1616 	int		ipf_interror;	/* Should be in a struct that is per  */
1617 					/* thread or process. Does not belong */
1618 					/* here but there's a lot more work   */
1619 					/* in doing that properly. For now,   */
1620 					/* it is squatting. */
1621 	u_int		ipf_tcpidletimeout;
1622 	u_int		ipf_tcpclosewait;
1623 	u_int		ipf_tcplastack;
1624 	u_int		ipf_tcptimewait;
1625 	u_int		ipf_tcptimeout;
1626 	u_int		ipf_tcpsynsent;
1627 	u_int		ipf_tcpsynrecv;
1628 	u_int		ipf_tcpclosed;
1629 	u_int		ipf_tcphalfclosed;
1630 	u_int		ipf_udptimeout;
1631 	u_int		ipf_udpacktimeout;
1632 	u_int		ipf_icmptimeout;
1633 	u_int		ipf_icmpacktimeout;
1634 	u_int		ipf_iptimeout;
1635 	u_long		ipf_ticks;
1636 	u_long		ipf_userifqs;
1637 	u_long		ipf_rb_no_mem;
1638 	u_long		ipf_rb_node_max;
1639 	u_long		ipf_frouteok[2];
1640 	ipftuneable_t	*ipf_tuners;
1641 	void		*ipf_frag_soft;
1642 	void		*ipf_nat_soft;
1643 	void		*ipf_state_soft;
1644 	void		*ipf_auth_soft;
1645 	void		*ipf_proxy_soft;
1646 	void		*ipf_sync_soft;
1647 	void		*ipf_lookup_soft;
1648 	void		*ipf_log_soft;
1649 	struct frgroup	*ipf_groups[IPL_LOGSIZE][2];
1650 	frentry_t	*ipf_rules[2][2];
1651 	frentry_t	*ipf_acct[2][2];
1652 	frentry_t	*ipf_rule_explist[2];
1653 	ipftoken_t	*ipf_token_head;
1654 	ipftoken_t	**ipf_token_tail;
1655 #if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) && \
1656     defined(_KERNEL)
1657 	struct callout_handle ipf_slow_ch;
1658 #endif
1659 #if defined(linux) && defined(_KERNEL)
1660 	struct timer_list	ipf_timer;
1661 #endif
1662 #if NETBSD_GE_REV(104040000)
1663 	struct callout	ipf_slow_ch;
1664 #endif
1665 #if SOLARIS
1666 # if SOLARIS2 >= 7
1667 	timeout_id_t	ipf_slow_ch;
1668 # else
1669 	int		ipf_slow_ch;
1670 # endif
1671 #endif
1672 #if defined(_KERNEL)
1673 # if SOLARIS
1674 	struct pollhead	ipf_poll_head[IPL_LOGSIZE];
1675 	void		*ipf_dip;
1676 #  if defined(INSTANCES)
1677 	int		ipf_get_loopback;
1678 	u_long		ipf_idnum;
1679 	net_handle_t	ipf_nd_v4;
1680 	net_handle_t	ipf_nd_v6;
1681 	hook_t		*ipf_hk_v4_in;
1682 	hook_t		*ipf_hk_v4_out;
1683 	hook_t		*ipf_hk_v4_nic;
1684 	hook_t		*ipf_hk_v6_in;
1685 	hook_t		*ipf_hk_v6_out;
1686 	hook_t		*ipf_hk_v6_nic;
1687 	hook_t		*ipf_hk_loop_v4_in;
1688 	hook_t		*ipf_hk_loop_v4_out;
1689 	hook_t		*ipf_hk_loop_v6_in;
1690 	hook_t		*ipf_hk_loop_v6_out;
1691 #  endif
1692 # else
1693 #  if defined(linux) && defined(_KERNEL)
1694 	struct poll_table_struct	ipf_selwait[IPL_LOGSIZE];
1695 	wait_queue_head_t		iplh_linux[IPL_LOGSIZE];
1696 #  else
1697 	struct selinfo	ipf_selwait[IPL_LOGSIZE];
1698 #  endif
1699 # endif
1700 #endif
1701 	void		*ipf_slow;
1702 	ipf_statistics_t ipf_stats[2];
1703 	u_char		ipf_iss_secret[32];
1704 	u_short		ipf_ip_id;
1705 } ipf_main_softc_t;
1706 
1707 #define	IPFERROR(_e)	do { softc->ipf_interror = (_e); \
1708 			     DT1(user_error, int, _e); \
1709 			} while (0)
1710 
1711 #ifndef	_KERNEL
1712 extern	int	ipf_check(void *, struct ip *, int, void *, int, mb_t **);
1713 extern	int	(*ipf_checkp)(ip_t *, int, void *, int, mb_t **);
1714 extern	struct	ifnet *get_unit(char *, int);
1715 extern	char	*get_ifname(struct ifnet *);
1716 extern	int	ipfioctl(ipf_main_softc_t *, int, ioctlcmd_t,
1717 			      void *, int);
1718 extern	void	m_freem(mb_t *);
1719 extern	size_t	msgdsize(mb_t *);
1720 extern	int	bcopywrap(void *, void *, size_t);
1721 #else /* #ifndef _KERNEL */
1722 # if defined(__NetBSD__) && defined(PFIL_HOOKS)
1723 extern	void	ipfilterattach(int);
1724 # endif
1725 extern	int	ipl_enable(void);
1726 extern	int	ipl_disable(void);
1727 # ifdef MENTAT
1728 extern	int	ipf_check(void *, struct ip *, int, void *, int, void *,
1729 			       mblk_t **);
1730 #  if SOLARIS
1731 extern	void	ipf_prependmbt(fr_info_t *, mblk_t *);
1732 #   if SOLARIS2 >= 7
1733 extern	int	ipfioctl(dev_t, int, intptr_t, int, cred_t *, int *);
1734 #   else
1735 extern	int	ipfioctl(dev_t, int, int *, int, cred_t *, int *);
1736 #   endif
1737 #  endif
1738 #  ifdef __hpux
1739 extern	int	ipfioctl(dev_t, int, caddr_t, int);
1740 extern	int	ipf_select(dev_t, int);
1741 #  endif
1742 extern	int	ipf_qout(queue_t *, mblk_t *);
1743 # else /* MENTAT */
1744 extern	int	ipf_check(void *, struct ip *, int, void *, int, mb_t **);
1745 extern	int	(*fr_checkp)(ip_t *, int, void *, int, mb_t **);
1746 extern	size_t	mbufchainlen(mb_t *);
1747 #  ifdef	__sgi
1748 #   include <sys/cred.h>
1749 extern	int	ipfioctl(dev_t, int, caddr_t, int, cred_t *, int *);
1750 extern	int	ipfilter_sgi_attach(void);
1751 extern	void	ipfilter_sgi_detach(void);
1752 extern	void	ipfilter_sgi_intfsync(void);
1753 #  else
1754 #   ifdef	IPFILTER_LKM
1755 extern	int	ipf_identify(char *);
1756 #   endif
1757 #   if BSDOS_GE_REV(199510) || FREEBSD_GE_REV(220000) || \
1758       (defined(NetBSD) && (NetBSD >= 199511)) || defined(__OpenBSD__)
1759 #    if defined(__NetBSD__) || BSDOS_GE_REV(199701) || \
1760        defined(__OpenBSD__) || FREEBSD_GE_REV(300000)
1761 #     if (__FreeBSD_version >= 500024)
1762 #      if (__FreeBSD_version >= 502116)
1763 extern	int	ipfioctl(struct cdev*, u_long, caddr_t, int, struct thread *);
1764 #      else
1765 extern	int	ipfioctl(dev_t, u_long, caddr_t, int, struct thread *);
1766 #      endif /* __FreeBSD_version >= 502116 */
1767 #     else
1768 #      if  NETBSD_GE_REV(499001000)
1769 extern	int	ipfioctl(dev_t, u_long, void *, int, struct lwp *);
1770 #       else
1771 #       if  NETBSD_GE_REV(399001400)
1772 extern	int	ipfioctl(dev_t, u_long, caddr_t, int, struct lwp *);
1773 #       else
1774 extern	int	ipfioctl(dev_t, u_long, caddr_t, int, struct proc *);
1775 #       endif
1776 #      endif
1777 #     endif /* __FreeBSD_version >= 500024 */
1778 #    else
1779 extern	int	ipfioctl(dev_t, int, caddr_t, int, struct proc *);
1780 #    endif
1781 #   else
1782 #    ifdef linux
1783 extern	int	ipfioctl(struct inode *, struct file *, u_int, u_long);
1784 #    else
1785 extern	int	ipfioctl(dev_t, int, caddr_t, int);
1786 #    endif
1787 #   endif /* (_BSDI_VERSION >= 199510) */
1788 #  endif /* __ sgi */
1789 # endif /* MENTAT */
1790 
1791 # if defined(__FreeBSD_version)
1792 extern	int	ipf_pfil_hook(void);
1793 extern	int	ipf_pfil_unhook(void);
1794 extern	void	ipf_event_reg(void);
1795 extern	void	ipf_event_dereg(void);
1796 # endif
1797 
1798 # if defined(INSTANCES)
1799 extern	ipf_main_softc_t	*ipf_find_softc(u_long);
1800 extern	int	ipf_set_loopback(ipf_main_softc_t *, ipftuneable_t *,
1801 				      ipftuneval_t *);
1802 # endif
1803 
1804 #endif /* #ifndef _KERNEL */
1805 
1806 extern	char	*memstr(const char *, char *, size_t, size_t);
1807 extern	int	count4bits(u_32_t);
1808 #ifdef USE_INET6
1809 extern	int	count6bits(u_32_t *);
1810 #endif
1811 extern	int	frrequest(ipf_main_softc_t *, int, ioctlcmd_t, void *,
1812 			       int, int);
1813 extern	char	*getifname(struct ifnet *);
1814 extern	int	ipfattach(ipf_main_softc_t *);
1815 extern	int	ipfdetach(ipf_main_softc_t *);
1816 extern	u_short	ipf_cksum(u_short *, int);
1817 extern	int	copyinptr(ipf_main_softc_t *, void *, void *, size_t);
1818 extern	int	copyoutptr(ipf_main_softc_t *, void *, void *, size_t);
1819 extern	int	ipf_fastroute(mb_t *, mb_t **, fr_info_t *, frdest_t *);
1820 extern	int	ipf_inject(fr_info_t *, mb_t *);
1821 extern	int	ipf_inobj(ipf_main_softc_t *, void *, ipfobj_t *,
1822 			       void *, int);
1823 extern	int	ipf_inobjsz(ipf_main_softc_t *, void *, void *,
1824 				 int , int);
1825 extern	int	ipf_ioctlswitch(ipf_main_softc_t *, int, void *,
1826 				     ioctlcmd_t, int, int, void *);
1827 extern	int	ipf_ipf_ioctl(ipf_main_softc_t *, void *, ioctlcmd_t,
1828 				   int, int, void *);
1829 extern	int	ipf_ipftune(ipf_main_softc_t *, ioctlcmd_t, void *);
1830 extern	int	ipf_matcharray_load(ipf_main_softc_t *, void *,
1831 					 ipfobj_t *, int **);
1832 extern	int	ipf_matcharray_verify(int *, int);
1833 extern	int	ipf_outobj(ipf_main_softc_t *, void *, void *, int);
1834 extern	int	ipf_outobjk(ipf_main_softc_t *, ipfobj_t *, void *);
1835 extern	int	ipf_outobjsz(ipf_main_softc_t *, void *, void *,
1836 				  int, int);
1837 extern	void	*ipf_pullup(mb_t *, fr_info_t *, int);
1838 extern	int	ipf_resolvedest(ipf_main_softc_t *, char *,
1839 				     struct frdest *, int);
1840 extern	int	ipf_resolvefunc(ipf_main_softc_t *, void *);
1841 extern	void	*ipf_resolvenic(ipf_main_softc_t *, char *, int);
1842 extern	int	ipf_send_icmp_err(int, fr_info_t *, int);
1843 extern	int	ipf_send_reset(fr_info_t *);
1844 #if  (defined(__FreeBSD_version) && (__FreeBSD_version < 501000)) || \
1845      !defined(_KERNEL) || defined(linux)
1846 extern	int	ppsratecheck(struct timeval *, int *, int);
1847 #endif
1848 extern	void	ipf_apply_timeout(ipftq_t *, u_int);
1849 extern	ipftq_t	*ipf_addtimeoutqueue(ipf_main_softc_t *, ipftq_t **,
1850 					  u_int);
1851 extern	void	ipf_deletequeueentry(ipftqent_t *);
1852 extern	int	ipf_deletetimeoutqueue(ipftq_t *);
1853 extern	void	ipf_freetimeoutqueue(ipf_main_softc_t *, ipftq_t *);
1854 extern	void	ipf_movequeue(u_long, ipftqent_t *, ipftq_t *,
1855 				   ipftq_t *);
1856 extern	void	ipf_queueappend(u_long, ipftqent_t *, ipftq_t *, void *);
1857 extern	void	ipf_queueback(u_long, ipftqent_t *);
1858 extern	int	ipf_queueflush(ipf_main_softc_t *, ipftq_delete_fn_t,
1859 				    ipftq_t *, ipftq_t *, u_int *, int, int);
1860 extern	void	ipf_queuefront(ipftqent_t *);
1861 extern	int	ipf_settimeout_tcp(ipftuneable_t *, ipftuneval_t *,
1862 					ipftq_t *);
1863 extern	int	ipf_checkv4sum(fr_info_t *);
1864 extern	int	ipf_checkl4sum(fr_info_t *);
1865 extern	int	ipf_ifpfillv4addr(int, struct sockaddr_in *,
1866 				      struct sockaddr_in *, struct in_addr *,
1867 				      struct in_addr *);
1868 extern	int	ipf_coalesce(fr_info_t *);
1869 #ifdef	USE_INET6
1870 extern	int	ipf_checkv6sum(fr_info_t *);
1871 extern	int	ipf_ifpfillv6addr(int, struct sockaddr_in6 *,
1872 				      struct sockaddr_in6 *, i6addr_t *,
1873 				      i6addr_t *);
1874 #endif
1875 
1876 extern	int	ipf_tune_add(ipf_main_softc_t *, ipftuneable_t *);
1877 extern	int	ipf_tune_add_array(ipf_main_softc_t *, ipftuneable_t *);
1878 extern	int	ipf_tune_del(ipf_main_softc_t *, ipftuneable_t *);
1879 extern	int	ipf_tune_del_array(ipf_main_softc_t *, ipftuneable_t *);
1880 extern	int	ipf_tune_array_link(ipf_main_softc_t *, ipftuneable_t *);
1881 extern	int	ipf_tune_array_unlink(ipf_main_softc_t *,
1882 					   ipftuneable_t *);
1883 extern	ipftuneable_t *ipf_tune_array_copy(void *, size_t,
1884 						const ipftuneable_t *);
1885 
1886 extern int	ipf_pr_pullup(fr_info_t *, int);
1887 
1888 extern	int	ipf_flush(ipf_main_softc_t *, minor_t, int);
1889 extern	frgroup_t *ipf_group_add(ipf_main_softc_t *, char *, void *,
1890 				      u_32_t, minor_t, int);
1891 extern	void	ipf_group_del(ipf_main_softc_t *, frgroup_t *, frentry_t *);
1892 extern	int	ipf_derefrule(ipf_main_softc_t *, frentry_t **);
1893 extern	frgroup_t *ipf_findgroup(ipf_main_softc_t *, char *, minor_t,
1894 				      int, frgroup_t ***);
1895 
1896 extern	int	ipf_log_init(void);
1897 extern	int	ipf_log_bytesused(ipf_main_softc_t *, int);
1898 extern	int	ipf_log_canread(ipf_main_softc_t *, int);
1899 extern	int	ipf_log_clear(ipf_main_softc_t *, minor_t);
1900 extern	u_long  ipf_log_failures(ipf_main_softc_t *, int);
1901 extern	int	ipf_log_read(ipf_main_softc_t *, minor_t, uio_t *);
1902 extern	int	ipf_log_items(ipf_main_softc_t *, int, fr_info_t *,
1903 				   void **, size_t *, int *, int);
1904 extern	u_long  ipf_log_logok(ipf_main_softc_t *, int);
1905 extern	void	ipf_log_unload(ipf_main_softc_t *);
1906 extern	int 	ipf_log_pkt(fr_info_t *, u_int);
1907 extern	int 	ipf_log_pkt(fr_info_t *, u_int);
1908 
1909 extern	frentry_t	*ipf_acctpkt(fr_info_t *, u_32_t *);
1910 extern	u_short		fr_cksum(fr_info_t *, ip_t *, int, void *);
1911 extern	void		ipf_deinitialise(ipf_main_softc_t *);
1912 extern	int		ipf_deliverlocal(ipf_main_softc_t *, int, void *,
1913 					      i6addr_t *);
1914 extern	frentry_t 	*ipf_dstgrpmap(fr_info_t *, u_32_t *);
1915 extern	void		ipf_fixskip(frentry_t **, frentry_t *, int);
1916 extern	void		ipf_forgetifp(ipf_main_softc_t *, void *);
1917 extern	frentry_t 	*ipf_getrulen(ipf_main_softc_t *, int, char *,
1918 					   u_32_t);
1919 extern	int		ipf_ifpaddr(ipf_main_softc_t *, int, int, void *,
1920 					i6addr_t *, i6addr_t *);
1921 extern	int		ipf_initialise(void);
1922 extern	int		ipf_lock(void *, int *);
1923 extern  int		ipf_makefrip(int, ip_t *, fr_info_t *);
1924 extern	void		ipf_inet_mask_add(int, ipf_v4_masktab_t *);
1925 extern	void		ipf_inet_mask_del(int, ipf_v4_masktab_t *);
1926 #ifdef	USE_INET6
1927 extern	void		ipf_inet6_mask_add(int, i6addr_t *, ipf_v6_masktab_t *);
1928 extern	void		ipf_inet6_mask_del(int, i6addr_t *, ipf_v6_masktab_t *);
1929 #endif
1930 extern	int		ipf_matchtag(ipftag_t *, ipftag_t *);
1931 extern	int		ipf_matchicmpqueryreply(int, icmpinfo_t *,
1932 						     struct icmp *, int);
1933 extern	u_32_t		ipf_newisn(fr_info_t *);
1934 extern	u_short		ipf_nextipid(fr_info_t *);
1935 extern	u_int		ipf_pcksum(fr_info_t *, int, u_int);
1936 extern	void		ipf_rule_expire(ipf_main_softc_t *);
1937 extern	int		ipf_scanlist(fr_info_t *, u_32_t);
1938 extern	frentry_t 	*ipf_srcgrpmap(fr_info_t *, u_32_t *);
1939 extern	int		ipf_tcpudpchk(fr_ip_t *, frtuc_t *);
1940 extern	int		ipf_verifysrc(fr_info_t *fin);
1941 extern	int		ipf_zerostats(ipf_main_softc_t *, void *);
1942 extern	int		ipf_getnextrule(ipf_main_softc_t *, ipftoken_t *,
1943 					     void *);
1944 extern	int		ipf_sync(ipf_main_softc_t *, void *);
1945 extern	int		ipf_token_deref(ipf_main_softc_t *, ipftoken_t *);
1946 extern	void		ipf_token_expire(ipf_main_softc_t *);
1947 extern	ipftoken_t	*ipf_token_find(ipf_main_softc_t *, int, int,
1948 					    void *);
1949 extern	void		ipf_token_free(ipf_main_softc_t *, ipftoken_t *);
1950 extern	int		ipf_token_del(ipf_main_softc_t *, int, int,
1951 					  void *);
1952 extern	void		ipf_token_mark_complete(ipftoken_t *);
1953 extern	int		ipf_genericiter(ipf_main_softc_t *, void *,
1954 					     int, void *);
1955 #ifdef	IPFILTER_LOOKUP
1956 extern	void		*ipf_resolvelookup(int, u_int, u_int,
1957 						lookupfunc_t *);
1958 #endif
1959 extern	u_32_t		ipf_random(void);
1960 
1961 extern	int		ipf_main_load(void);
1962 extern	void		*ipf_main_soft_create(void *);
1963 extern	void		ipf_main_soft_destroy(ipf_main_softc_t *);
1964 extern	int		ipf_main_soft_init(ipf_main_softc_t *);
1965 extern	int		ipf_main_soft_fini(ipf_main_softc_t *);
1966 extern	int		ipf_main_unload(void);
1967 extern	int		ipf_load_all(void);
1968 extern	int		ipf_unload_all(void);
1969 extern	void		ipf_destroy_all(ipf_main_softc_t *);
1970 extern	ipf_main_softc_t *ipf_create_all(void *);
1971 extern	int		ipf_init_all(ipf_main_softc_t *);
1972 extern	int		ipf_fini_all(ipf_main_softc_t *);
1973 extern	void		ipf_log_soft_destroy(ipf_main_softc_t *, void *);
1974 extern	void		*ipf_log_soft_create(ipf_main_softc_t *);
1975 extern	int		ipf_log_soft_init(ipf_main_softc_t *, void *);
1976 extern	int		ipf_log_soft_fini(ipf_main_softc_t *, void *);
1977 extern	int		ipf_log_main_load(void);
1978 extern	int		ipf_log_main_unload(void);
1979 
1980 
1981 extern	char	ipfilter_version[];
1982 #ifdef	USE_INET6
1983 extern	int	icmptoicmp6types[ICMP_MAXTYPE+1];
1984 extern	int	icmptoicmp6unreach[ICMP_MAX_UNREACH];
1985 extern	int	icmpreplytype6[ICMP6_MAXTYPE + 1];
1986 #endif
1987 #ifdef	IPFILTER_COMPAT
1988 extern	int	ipf_in_compat(ipf_main_softc_t *, ipfobj_t *, void *,int);
1989 extern	int	ipf_out_compat(ipf_main_softc_t *, ipfobj_t *, void *);
1990 #endif
1991 extern	int	icmpreplytype4[ICMP_MAXTYPE + 1];
1992 
1993 extern	int	ipf_ht_node_add(ipf_main_softc_t *, host_track_t *,
1994 				     int, i6addr_t *);
1995 extern	int	ipf_ht_node_del(host_track_t *, int, i6addr_t *);
1996 extern	void	ipf_rb_ht_flush(host_track_t *);
1997 extern	void	ipf_rb_ht_freenode(host_node_t *, void *);
1998 extern	void	ipf_rb_ht_init(host_track_t *);
1999 
2000 #endif /* _NETINET_IP_FIL_H_ */
2001