1 /*
2  * Copyright (C) 1993-2001, 2003 by Darren Reed.
3  *
4  * See the IPFILTER.LICENCE file for details on licencing.
5  *
6  * @(#)ip_fil.h	1.35 6/5/96
7  * $Id: ip_fil.h,v 2.170.2.22 2005/07/16 05:55:35 darrenr Exp $
8  *
9  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
10  *
11  * Copyright (c) 2014, Joyent, Inc.  All rights reserved.
12  */
13 
14 #ifndef	__IP_FIL_H__
15 #define	__IP_FIL_H__
16 
17 #include "netinet/ip_compat.h"
18 #include <sys/zone.h>
19 
20 #ifdef	SOLARIS
21 #undef	SOLARIS
22 #endif
23 #if (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
24 #define	SOLARIS	(1)
25 #else
26 #define	SOLARIS	(0)
27 #endif
28 
29 #ifndef	__P
30 # ifdef	__STDC__
31 #  define	__P(x)	x
32 # else
33 #  define	__P(x)	()
34 # endif
35 #endif
36 
37 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51)
38 # define	SIOCADAFR	_IOW('r', 60, struct ipfobj)
39 # define	SIOCRMAFR	_IOW('r', 61, struct ipfobj)
40 # define	SIOCSETFF	_IOW('r', 62, u_int)
41 # define	SIOCGETFF	_IOR('r', 63, u_int)
42 # define	SIOCGETFS	_IOWR('r', 64, struct ipfobj)
43 # define	SIOCIPFFL	_IOWR('r', 65, int)
44 # define	SIOCIPFFB	_IOR('r', 66, int)
45 # define	SIOCADIFR	_IOW('r', 67, struct ipfobj)
46 # define	SIOCRMIFR	_IOW('r', 68, struct ipfobj)
47 # define	SIOCSWAPA	_IOR('r', 69, u_int)
48 # define	SIOCINAFR	_IOW('r', 70, struct ipfobj)
49 # define	SIOCINIFR	_IOW('r', 71, struct ipfobj)
50 # define	SIOCFRENB	_IOW('r', 72, u_int)
51 # define	SIOCFRSYN	_IOW('r', 73, u_int)
52 # define	SIOCFRZST	_IOWR('r', 74, struct ipfobj)
53 # define	SIOCZRLST	_IOWR('r', 75, struct ipfobj)
54 # define	SIOCAUTHW	_IOWR('r', 76, struct ipfobj)
55 # define	SIOCAUTHR	_IOWR('r', 77, struct ipfobj)
56 # define	SIOCATHST	_IOWR('r', 78, struct ipfobj)
57 # define	SIOCSTLCK	_IOWR('r', 79, u_int)
58 # define	SIOCSTPUT	_IOWR('r', 80, struct ipfobj)
59 # define	SIOCSTGET	_IOWR('r', 81, struct ipfobj)
60 # define	SIOCSTGSZ	_IOWR('r', 82, struct ipfobj)
61 # define	SIOCGFRST	_IOWR('r', 83, struct ipfobj)
62 # define	SIOCSETLG	_IOWR('r', 84, int)
63 # define	SIOCGETLG	_IOWR('r', 85, int)
64 # define	SIOCFUNCL	_IOWR('r', 86, struct ipfunc_resolve)
65 # define	SIOCIPFGETNEXT	_IOWR('r', 87, struct ipfobj)
66 # define	SIOCIPFGET	_IOWR('r', 88, struct ipfobj)
67 # define	SIOCIPFSET	_IOWR('r', 89, struct ipfobj)
68 # define	SIOCIPFL6	_IOWR('r', 90, int)
69 # define	SIOCIPFLP	_IOWR('r', 91, int)
70 # define	SIOCIPFITER	_IOWR('r', 92, struct ipfobj)
71 # define	SIOCGENITER	_IOWR('r', 93, struct ipfobj)
72 # define	SIOCGTABL	_IOWR('r', 94, struct ipfobj)
73 # define	SIOCIPFDELTOK	_IOWR('r', 95, int)
74 # define	SIOCLOOKUPITER	_IOWR('r', 96, struct ipfobj)
75 #else
76 # define	SIOCADAFR	_IOW(r, 60, struct ipfobj)
77 # define	SIOCRMAFR	_IOW(r, 61, struct ipfobj)
78 # define	SIOCSETFF	_IOW(r, 62, u_int)
79 # define	SIOCGETFF	_IOR(r, 63, u_int)
80 # define	SIOCGETFS	_IOWR(r, 64, struct ipfobj)
81 # define	SIOCIPFFL	_IOWR(r, 65, int)
82 # define	SIOCIPFFB	_IOR(r, 66, int)
83 # define	SIOCADIFR	_IOW(r, 67, struct ipfobj)
84 # define	SIOCRMIFR	_IOW(r, 68, struct ipfobj)
85 # define	SIOCSWAPA	_IOR(r, 69, u_int)
86 # define	SIOCINAFR	_IOW(r, 70, struct ipfobj)
87 # define	SIOCINIFR	_IOW(r, 71, struct ipfobj)
88 # define	SIOCFRENB	_IOW(r, 72, u_int)
89 # define	SIOCFRSYN	_IOW(r, 73, u_int)
90 # define	SIOCFRZST	_IOWR(r, 74, struct ipfobj)
91 # define	SIOCZRLST	_IOWR(r, 75, struct ipfobj)
92 # define	SIOCAUTHW	_IOWR(r, 76, struct ipfobj)
93 # define	SIOCAUTHR	_IOWR(r, 77, struct ipfobj)
94 # define	SIOCATHST	_IOWR(r, 78, struct ipfobj)
95 # define	SIOCSTLCK	_IOWR(r, 79, u_int)
96 # define	SIOCSTPUT	_IOWR(r, 80, struct ipfobj)
97 # define	SIOCSTGET	_IOWR(r, 81, struct ipfobj)
98 # define	SIOCSTGSZ	_IOWR(r, 82, struct ipfobj)
99 # define	SIOCGFRST	_IOWR(r, 83, struct ipfobj)
100 # define	SIOCSETLG	_IOWR(r, 84, int)
101 # define	SIOCGETLG	_IOWR(r, 85, int)
102 # define	SIOCFUNCL	_IOWR(r, 86, struct ipfunc_resolve)
103 # define	SIOCIPFGETNEXT	_IOWR(r, 87, struct ipfobj)
104 # define	SIOCIPFGET	_IOWR(r, 88, struct ipfobj)
105 # define	SIOCIPFSET	_IOWR(r, 89, struct ipfobj)
106 # define	SIOCIPFL6	_IOWR(r, 90, int)
107 # define	SIOCIPFLP	_IOWR(r, 91, int)
108 # define	SIOCIPFITER	_IOWR(r, 92, struct ipfobj)
109 # define	SIOCGENITER	_IOWR(r, 93, struct ipfobj)
110 # define	SIOCGTABL	_IOWR(r, 94, struct ipfobj)
111 # define	SIOCIPFDELTOK	_IOWR(r, 95, int)
112 # define	SIOCLOOKUPITER	_IOWR(r, 96, struct ipfobj)
113 #endif
114 #define	SIOCADDFR	SIOCADAFR
115 #define	SIOCDELFR	SIOCRMAFR
116 #define	SIOCINSFR	SIOCINAFR
117 # define	SIOCIPFZONESET	_IOWR('r', 97, struct ipfzoneobj)
118 
119 /*
120  * What type of table is getting flushed?
121  */
122 
123 #define	NAT_FLUSH	1
124 #define	STATE_FLUSH	2
125 
126 /*
127  * What table flush options are available?
128  */
129 
130 #define	FLUSH_LIST	0
131 #define	FLUSH_TABLE_ALL		1	/* Flush entire table */
132 #define	FLUSH_TABLE_CLOSING	2	/* Flush "closing" entries" */
133 #define	FLUSH_TABLE_EXTRA	3	/* Targetted flush: almost closed, long idle */
134 
135 #define	VALID_TABLE_FLUSH_OPT(x)	((x) >= 1 && (x) <= 3)
136 
137 /*
138  * Define the default hi and lo watermarks used when flushing the
139  * tables.  The values represent percent full of respective tables.
140  */
141 
142 #define NAT_FLUSH_HI	95
143 #define NAT_FLUSH_LO	75
144 
145 #define ST_FLUSH_HI	95
146 #define ST_FLUSH_LO	75
147 
148 /*
149  * How full are the tables?
150  */
151 
152 #define NAT_TAB_WATER_LEVEL(x)	((x)->ifs_nat_stats.ns_inuse * 100 \
153 				/ (x)->ifs_ipf_nattable_max)
154 
155 #define ST_TAB_WATER_LEVEL(x)	((x)->ifs_ips_num * 100 \
156 				/ (x)->ifs_fr_statemax)
157 
158 struct ipscan;
159 struct ifnet;
160 
161 typedef struct ipf_stack ipf_stack_t;
162 typedef struct fr_info fr_info_t;
163 
164 typedef	int	(* lookupfunc_t) __P((void *, int, void *, fr_info_t *, ipf_stack_t *));
165 
166 /*
167  * i6addr is used as a container for both IPv4 and IPv6 addresses, as well
168  * as other types of objects, depending on its qualifier.
169  */
170 #ifdef	USE_INET6
171 typedef	union	i6addr	{
172 	u_32_t	i6[4];
173 	struct	in_addr	in4;
174 	struct	in6_addr in6;
175 	void	*vptr[2];
176 	lookupfunc_t	lptr[2];
177 } i6addr_t;
178 #define	in6_addr8	in6.s6_addr
179 #else
180 typedef	union	i6addr	{
181 	u_32_t	i6[4];
182 	struct	in_addr	in4;
183 	void	*vptr[2];
184 	lookupfunc_t	lptr[2];
185 } i6addr_t;
186 #endif
187 
188 #define	in4_addr	in4.s_addr
189 #define	iplookupnum	i6[0]
190 #define	iplookuptype	i6[1]
191 /*
192  * NOTE: These DO overlap the above on 64bit systems and this IS recognised.
193  */
194 #define	iplookupptr	vptr[0]
195 #define	iplookupfunc	lptr[1]
196 
197 #define	I60(x)	(((i6addr_t *)(x))->i6[0])
198 #define	I61(x)	(((i6addr_t *)(x))->i6[1])
199 #define	I62(x)	(((i6addr_t *)(x))->i6[2])
200 #define	I63(x)	(((i6addr_t *)(x))->i6[3])
201 #define	HI60(x)	ntohl(((i6addr_t *)(x))->i6[0])
202 #define	HI61(x)	ntohl(((i6addr_t *)(x))->i6[1])
203 #define	HI62(x)	ntohl(((i6addr_t *)(x))->i6[2])
204 #define	HI63(x)	ntohl(((i6addr_t *)(x))->i6[3])
205 
206 #define	IP6_EQ(a,b)	((I63(a) == I63(b)) && (I62(a) == I62(b)) && \
207 			 (I61(a) == I61(b)) && (I60(a) == I60(b)))
208 #define	IP6_NEQ(a,b)	((I63(a) != I63(b)) || (I62(a) != I62(b)) || \
209 			 (I61(a) != I61(b)) || (I60(a) != I60(b)))
210 #define	IP6_ISZERO(a)   ((I60(a) | I61(a) | I62(a) | I63(a)) == 0)
211 #define IP6_NOTZERO(a)  ((I60(a) | I61(a) | I62(a) | I63(a)) != 0)
212 #define	IP6_ISONES(a)	((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \
213 			 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff))
214 #define	IP6_GT(a,b)	(ntohl(HI60(a)) > ntohl(HI60(b)) || \
215 			 (HI60(a) == HI60(b) && \
216 			  (ntohl(HI61(a)) > ntohl(HI61(b)) || \
217 			   (HI61(a) == HI61(b) && \
218 			    (ntohl(HI62(a)) > ntohl(HI62(b)) || \
219 			     (HI62(a) == HI62(b) && \
220 			      ntohl(HI63(a)) > ntohl(HI63(b))))))))
221 #define	IP6_LT(a,b)	(ntohl(HI60(a)) < ntohl(HI60(b)) || \
222 			 (HI60(a) == HI60(b) && \
223 			  (ntohl(HI61(a)) < ntohl(HI61(b)) || \
224 			   (HI61(a) == HI61(b) && \
225 			    (ntohl(HI62(a)) < ntohl(HI62(b)) || \
226 			     (HI62(a) == HI62(b) && \
227 			      ntohl(HI63(a)) < ntohl(HI63(b))))))))
228 #define	NLADD(n,x)	htonl(ntohl(n) + (x))
229 #define	IP6_INC(a)	\
230 		{ i6addr_t *_i6 = (i6addr_t *)(a); \
231 		  _i6->i6[3] = NLADD(_i6->i6[3], 1); \
232 		  if (_i6->i6[3] == 0) { \
233 			_i6->i6[2] = NLADD(_i6->i6[2], 1); \
234 			if (_i6->i6[2] == 0) { \
235 				_i6->i6[1] = NLADD(_i6->i6[1], 1); \
236 				if (_i6->i6[1] == 0) { \
237 					_i6->i6[0] = NLADD(_i6->i6[0], 1); \
238 				} \
239 			} \
240 		  } \
241 		}
242 #define	IP6_ADD(a,x,d)	\
243 		{ i6addr_t *_s = (i6addr_t *)(a); \
244 		  i6addr_t *_d = (i6addr_t *)(d); \
245 		  _d->i6[3] = NLADD(_s->i6[3], x); \
246 		  if (ntohl(_d->i6[3]) < ntohl(_s->i6[3])) { \
247 			_d->i6[2] = NLADD(_d->i6[2], 1); \
248 			if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \
249 				_d->i6[1] = NLADD(_d->i6[1], 1); \
250 				if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \
251 					_d->i6[0] = NLADD(_d->i6[0], 1); \
252 				} \
253 			} \
254 		  } \
255 		}
256 #define	IP6_AND(a,b,d)	{ i6addr_t *_s1 = (i6addr_t *)(a); \
257 			  i6addr_t *_s2 = (i6addr_t *)(b); \
258 			  i6addr_t *_d = (i6addr_t *)(d); \
259 			  _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \
260 			  _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \
261 			  _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \
262 			  _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \
263 			}
264 #define	IP6_MASKEQ(a,m,b) \
265 			(((I60(a) & I60(m)) == I60(b)) && \
266 			 ((I61(a) & I61(m)) == I61(b)) && \
267 			 ((I62(a) & I62(m)) == I62(b)) && \
268 			 ((I63(a) & I63(m)) == I63(b)))
269 #define	IP6_MASKNEQ(a,m,b) \
270 			(((I60(a) & I60(m)) != I60(b)) || \
271 			 ((I61(a) & I61(m)) != I61(b)) || \
272 			 ((I62(a) & I62(m)) != I62(b)) || \
273 			 ((I63(a) & I63(m)) != I63(b)))
274 #define	IP6_MERGE(a,b,c) \
275 			{ i6addr_t *_d, *_s1, *_s2; \
276 			  _d = (i6addr_t *)(a); \
277 			  _s1 = (i6addr_t *)(b); \
278 			  _s2 = (i6addr_t *)(c); \
279 			  _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \
280 			  _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \
281 			  _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \
282 			  _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \
283 			}
284 
285 
286 typedef	struct	fr_ip	{
287 	u_32_t	fi_v:4;		/* IP version */
288 	u_32_t	fi_xx:4;	/* spare */
289 	u_32_t	fi_tos:8;	/* IP packet TOS */
290 	u_32_t	fi_ttl:8;	/* IP packet TTL */
291 	u_32_t	fi_p:8;		/* IP packet protocol */
292 	u_32_t	fi_optmsk;	/* bitmask composed from IP options */
293 	i6addr_t fi_src;	/* source address from packet */
294 	i6addr_t fi_dst;	/* destination address from packet */
295 	u_short	fi_secmsk;	/* bitmask composed from IP security options */
296 	u_short	fi_auth;	/* authentication code from IP sec. options */
297 	u_32_t	fi_flx;		/* packet flags */
298 	u_32_t	fi_tcpmsk;	/* TCP options set/reset */
299 	u_32_t	fi_res1;	/* RESERVED */
300 } fr_ip_t;
301 
302 /*
303  * For use in fi_flx
304  */
305 #define	FI_TCPUDP	0x0001	/* TCP/UCP implied comparison*/
306 #define	FI_OPTIONS	0x0002
307 #define	FI_FRAG		0x0004
308 #define	FI_SHORT	0x0008
309 #define	FI_NATED	0x0010
310 #define	FI_MULTICAST	0x0020
311 #define	FI_BROADCAST	0x0040
312 #define	FI_MBCAST	0x0080
313 #define	FI_STATE	0x0100
314 #define	FI_BADNAT	0x0200
315 #define	FI_BAD		0x0400
316 #define	FI_OOW		0x0800	/* Out of state window, else match */
317 #define	FI_ICMPERR	0x1000
318 #define	FI_FRAGBODY	0x2000
319 #define	FI_BADSRC	0x4000
320 #define	FI_LOWTTL	0x8000
321 #define	FI_CMP		0xcf03	/* Not FI_FRAG,FI_NATED,FI_FRAGTAIL,broadcast */
322 #define	FI_ICMPCMP	0x0003	/* Flags we can check for ICMP error packets */
323 #define	FI_WITH		0xeffe	/* Not FI_TCPUDP */
324 #define	FI_V6EXTHDR	0x10000
325 #define	FI_COALESCE	0x20000
326 #define	FI_ICMPQUERY	0x40000
327 #define	FI_NEWNAT	0x80000
328 #define	FI_MOREFRAG	0x100000
329 #define FI_NEG_OOW	0x10000000	/* packet underflows TCP window */
330 #define	FI_NOCKSUM	0x20000000	/* don't do a L4 checksum validation */
331 #define	FI_DONTCACHE	0x40000000	/* don't cache the result */
332 #define	FI_IGNORE	0x80000000
333 
334 #define	fi_saddr	fi_src.in4.s_addr
335 #define	fi_daddr	fi_dst.in4.s_addr
336 #define	fi_srcnum	fi_src.iplookupnum
337 #define	fi_dstnum	fi_dst.iplookupnum
338 #define	fi_srctype	fi_src.iplookuptype
339 #define	fi_dsttype	fi_dst.iplookuptype
340 #define	fi_srcptr	fi_src.iplookupptr
341 #define	fi_dstptr	fi_dst.iplookupptr
342 #define	fi_srcfunc	fi_src.iplookupfunc
343 #define	fi_dstfunc	fi_dst.iplookupfunc
344 
345 
346 /*
347  * These are both used by the state and NAT code to indicate that one port or
348  * the other should be treated as a wildcard.
349  * NOTE: When updating, check bit masks in ip_state.h and update there too.
350  */
351 #define	SI_W_SPORT	0x00000100
352 #define	SI_W_DPORT	0x00000200
353 #define	SI_WILDP	(SI_W_SPORT|SI_W_DPORT)
354 #define	SI_W_SADDR	0x00000400
355 #define	SI_W_DADDR	0x00000800
356 #define	SI_WILDA	(SI_W_SADDR|SI_W_DADDR)
357 #define	SI_NEWFR	0x00001000
358 #define	SI_CLONE	0x00002000
359 #define	SI_CLONED	0x00004000
360 
361 
362 
363 
364 struct	fr_info	{
365 	void	*fin_ifp;		/* interface packet is `on' */
366 	fr_ip_t	fin_fi;		/* IP Packet summary */
367 	union	{
368 		u_short	fid_16[2];	/* TCP/UDP ports, ICMP code/type */
369 		u_32_t	fid_32;
370 	} fin_dat;
371 	int	fin_out;		/* in or out ? 1 == out, 0 == in */
372 	int	fin_rev;		/* state only: 1 = reverse */
373 	u_short	fin_hlen;		/* length of IP header in bytes */
374 	u_char	fin_tcpf;		/* TCP header flags (SYN, ACK, etc) */
375 	u_char	fin_icode;		/* ICMP error to return */
376 	u_32_t	fin_rule;		/* rule # last matched */
377 	char	fin_group[FR_GROUPLEN];	/* group number, -1 for none */
378 	struct	frentry *fin_fr;	/* last matching rule */
379 	void	*fin_dp;		/* start of data past IP header */
380 	int	fin_dlen;		/* length of data portion of packet */
381 	int	fin_plen;
382 	int	fin_ipoff;		/* # bytes from buffer start to hdr */
383 	u_32_t	fin_id;			/* IP packet id field */
384 	u_short	fin_off;
385 	int	fin_depth;		/* Group nesting depth */
386 	int	fin_error;		/* Error code to return */
387 	u_int	fin_pktnum;
388 	void	*fin_nattag;
389 	union {
390 		ip_t	*fip_ip;
391 #ifdef	USE_INET6
392 		ip6_t	*fip_ip6;
393 #endif
394 	} fin_ipu;
395 	mb_t	**fin_mp;		/* pointer to pointer to mbuf */
396 	mb_t	*fin_m;			/* pointer to mbuf */
397 #ifdef	MENTAT
398 	mb_t	*fin_qfm;		/* pointer to mblk where pkt starts */
399 	void	*fin_qpi;
400 	ipf_stack_t *fin_ifs;
401 #endif
402 #ifdef	__sgi
403 	void	*fin_hbuf;
404 #endif
405 };
406 
407 #define	fin_ip		fin_ipu.fip_ip
408 #define	fin_ip6		fin_ipu.fip_ip6
409 #define	fin_v		fin_fi.fi_v
410 #define	fin_p		fin_fi.fi_p
411 #define	fin_flx		fin_fi.fi_flx
412 #define	fin_optmsk	fin_fi.fi_optmsk
413 #define	fin_secmsk	fin_fi.fi_secmsk
414 #define	fin_auth	fin_fi.fi_auth
415 #define	fin_src		fin_fi.fi_src.in4
416 #define	fin_saddr	fin_fi.fi_saddr
417 #define	fin_dst		fin_fi.fi_dst.in4
418 #define	fin_daddr	fin_fi.fi_daddr
419 #define	fin_data	fin_dat.fid_16
420 #define	fin_sport	fin_dat.fid_16[0]
421 #define	fin_dport	fin_dat.fid_16[1]
422 #define	fin_ports	fin_dat.fid_32
423 
424 #ifdef	USE_INET6
425 # define	fin_src6	fin_fi.fi_src
426 # define	fin_dst6	fin_fi.fi_dst
427 # define	fin_dstip6	fin_fi.fi_dst.in6
428 # define	fin_srcip6	fin_fi.fi_src.in6
429 #endif
430 
431 #define	IPF_IN	0
432 #define	IPF_OUT	1
433 
434 typedef	struct frentry	*(*ipfunc_t) __P((fr_info_t *, u_32_t *));
435 typedef	int		(*ipfuncinit_t) __P((struct frentry *,
436 					     ipf_stack_t *));
437 
438 typedef	struct	ipfunc_resolve	{
439 	char		ipfu_name[32];
440 	ipfunc_t	ipfu_addr;
441 	ipfuncinit_t	ipfu_init;
442 } ipfunc_resolve_t;
443 
444 /*
445  * Size for compares on fr_info structures
446  */
447 #define	FI_CSIZE	offsetof(fr_info_t, fin_icode)
448 #define	FI_LCSIZE	offsetof(fr_info_t, fin_dp)
449 
450 /*
451  * Size for copying cache fr_info structure
452  */
453 #define	FI_COPYSIZE	offsetof(fr_info_t, fin_dp)
454 
455 /*
456  * Structure for holding IPFilter's tag information
457  */
458 #define	IPFTAG_LEN	16
459 typedef	struct	{
460 	union	{
461 		u_32_t	iptu_num[4];
462 		char	iptu_tag[IPFTAG_LEN];
463 	} ipt_un;
464 	int	ipt_not;
465 } ipftag_t;
466 
467 #define	ipt_tag	ipt_un.iptu_tag
468 #define	ipt_num	ipt_un.iptu_num
469 
470 
471 /*
472  * This structure is used to hold information about the next hop for where
473  * to forward a packet.
474  */
475 typedef	struct	frdest	{
476 	void	*fd_ifp;
477 	i6addr_t	fd_ip6;
478 	char	fd_ifname[LIFNAMSIZ];
479 } frdest_t;
480 
481 #define	fd_ip	fd_ip6.in4
482 
483 
484 /*
485  * This structure holds information about a port comparison.
486  */
487 typedef	struct	frpcmp	{
488 	int	frp_cmp;	/* data for port comparisons */
489 	u_short	frp_port;	/* top port for <> and >< */
490 	u_short	frp_top;	/* top port for <> and >< */
491 } frpcmp_t;
492 
493 #define FR_NONE 0
494 #define FR_EQUAL 1
495 #define FR_NEQUAL 2
496 #define FR_LESST 3
497 #define FR_GREATERT 4
498 #define FR_LESSTE 5
499 #define FR_GREATERTE 6
500 #define FR_OUTRANGE 7
501 #define FR_INRANGE 8
502 #define FR_INCRANGE 9
503 
504 /*
505  * Structure containing all the relevant TCP things that can be checked in
506  * a filter rule.
507  */
508 typedef	struct	frtuc	{
509 	u_char		ftu_tcpfm;	/* tcp flags mask */
510 	u_char		ftu_tcpf;	/* tcp flags */
511 	frpcmp_t	ftu_src;
512 	frpcmp_t	ftu_dst;
513 } frtuc_t;
514 
515 #define	ftu_scmp	ftu_src.frp_cmp
516 #define	ftu_dcmp	ftu_dst.frp_cmp
517 #define	ftu_sport	ftu_src.frp_port
518 #define	ftu_dport	ftu_dst.frp_port
519 #define	ftu_stop	ftu_src.frp_top
520 #define	ftu_dtop	ftu_dst.frp_top
521 
522 #define	FR_TCPFMAX	0x3f
523 
524 /*
525  * This structure makes up what is considered to be the IPFilter specific
526  * matching components of a filter rule, as opposed to the data structures
527  * used to define the result which are in frentry_t and not here.
528  */
529 typedef	struct	fripf	{
530 	fr_ip_t	fri_ip;
531 	fr_ip_t	fri_mip;	/* mask structure */
532 
533 	u_short	fri_icmpm;		/* data for ICMP packets (mask) */
534 	u_short	fri_icmp;
535 
536 	frtuc_t	fri_tuc;
537 	int	fri_satype;		/* addres type */
538 	int	fri_datype;		/* addres type */
539 	int	fri_sifpidx;		/* doing dynamic addressing */
540 	int	fri_difpidx;		/* index into fr_ifps[] to use when */
541 } fripf_t;
542 
543 #define	fri_dstnum	fri_ip.fi_dstnum
544 #define	fri_srcnum	fri_mip.fi_srcnum
545 #define	fri_dstptr	fri_ip.fi_dstptr
546 #define	fri_srcptr	fri_mip.fi_srcptr
547 
548 #define	FRI_NORMAL	0	/* Normal address */
549 #define	FRI_DYNAMIC	1	/* dynamic address */
550 #define	FRI_LOOKUP	2	/* address is a pool # */
551 #define	FRI_RANGE	3	/* address/mask is a range */
552 #define	FRI_NETWORK	4	/* network address from if */
553 #define	FRI_BROADCAST	5	/* broadcast address from if */
554 #define	FRI_PEERADDR	6	/* Peer address for P-to-P */
555 #define	FRI_NETMASKED	7	/* network address with netmask from if */
556 
557 
558 typedef	struct	frentry	* (* frentfunc_t) __P((fr_info_t *));
559 
560 typedef	struct	frentry {
561 	ipfmutex_t	fr_lock;
562 	struct	frentry	*fr_next;
563 	struct	frentry	**fr_grp;
564 	struct	ipscan	*fr_isc;
565 	void	*fr_ifas[4];
566 	void	*fr_ptr;	/* for use with fr_arg */
567 	char	*fr_comment;	/* text comment for rule */
568 	int	fr_ref;		/* reference count - for grouping */
569 	int	fr_statecnt;	/* state count - for limit rules */
570 	/*
571 	 * These are only incremented when a packet  matches this rule and
572 	 * it is the last match
573 	 */
574 	U_QUAD_T	fr_hits;
575 	U_QUAD_T	fr_bytes;
576 
577 	/*
578 	 * For PPS rate limiting
579 	 */
580 	struct timeval	fr_lastpkt;
581 	int		fr_curpps;
582 
583 	union	{
584 		void		*fru_data;
585 		caddr_t		fru_caddr;
586 		fripf_t		*fru_ipf;
587 		frentfunc_t	fru_func;
588 	} fr_dun;
589 
590 	/*
591 	 * Fields after this may not change whilst in the kernel.
592 	 */
593 	ipfunc_t fr_func; 	/* call this function */
594 	int	fr_dsize;
595 	int	fr_pps;
596 	int	fr_statemax;	/* max reference count */
597 	int	fr_flineno;	/* line number from conf file */
598 	u_32_t	fr_type;
599 	u_32_t	fr_flags;	/* per-rule flags && options (see below) */
600 	u_32_t	fr_logtag;	/* user defined log tag # */
601 	u_32_t	fr_collect;	/* collection number */
602 	u_int	fr_arg;		/* misc. numeric arg for rule */
603 	u_int	fr_loglevel;	/* syslog log facility + priority */
604 	u_int	fr_age[2];	/* non-TCP timeouts */
605 	u_char	fr_v;
606 	u_char	fr_icode;	/* return ICMP code */
607 	char	fr_group[FR_GROUPLEN];	/* group to which this rule belongs */
608 	char	fr_grhead[FR_GROUPLEN];	/* group # which this rule starts */
609 	ipftag_t fr_nattag;
610 	char	fr_ifnames[4][LIFNAMSIZ];
611 	char	fr_isctag[16];
612 	frdest_t fr_tifs[2];	/* "to"/"reply-to" interface */
613 	frdest_t fr_dif;	/* duplicate packet interface */
614 	/*
615 	 * This must be last and will change after loaded into the kernel.
616 	 */
617 	u_int	fr_cksum;	/* checksum on filter rules for performance */
618 } frentry_t;
619 
620 #define	fr_caddr	fr_dun.fru_caddr
621 #define	fr_data		fr_dun.fru_data
622 #define	fr_dfunc	fr_dun.fru_func
623 #define	fr_ipf		fr_dun.fru_ipf
624 #define	fr_ip		fr_ipf->fri_ip
625 #define	fr_mip		fr_ipf->fri_mip
626 #define	fr_icmpm	fr_ipf->fri_icmpm
627 #define	fr_icmp		fr_ipf->fri_icmp
628 #define	fr_tuc		fr_ipf->fri_tuc
629 #define	fr_satype	fr_ipf->fri_satype
630 #define	fr_datype	fr_ipf->fri_datype
631 #define	fr_sifpidx	fr_ipf->fri_sifpidx
632 #define	fr_difpidx	fr_ipf->fri_difpidx
633 #define	fr_proto	fr_ip.fi_p
634 #define	fr_mproto	fr_mip.fi_p
635 #define	fr_ttl		fr_ip.fi_ttl
636 #define	fr_mttl		fr_mip.fi_ttl
637 #define	fr_tos		fr_ip.fi_tos
638 #define	fr_mtos		fr_mip.fi_tos
639 #define	fr_tcpfm	fr_tuc.ftu_tcpfm
640 #define	fr_tcpf		fr_tuc.ftu_tcpf
641 #define	fr_scmp		fr_tuc.ftu_scmp
642 #define	fr_dcmp		fr_tuc.ftu_dcmp
643 #define	fr_dport	fr_tuc.ftu_dport
644 #define	fr_sport	fr_tuc.ftu_sport
645 #define	fr_stop		fr_tuc.ftu_stop
646 #define	fr_dtop		fr_tuc.ftu_dtop
647 #define	fr_dst		fr_ip.fi_dst.in4
648 #define	fr_daddr	fr_ip.fi_dst.in4.s_addr
649 #define	fr_src		fr_ip.fi_src.in4
650 #define	fr_saddr	fr_ip.fi_src.in4.s_addr
651 #define	fr_dmsk		fr_mip.fi_dst.in4
652 #define	fr_dmask	fr_mip.fi_dst.in4.s_addr
653 #define	fr_smsk		fr_mip.fi_src.in4
654 #define	fr_smask	fr_mip.fi_src.in4.s_addr
655 #define	fr_dstnum	fr_ip.fi_dstnum
656 #define	fr_srcnum	fr_ip.fi_srcnum
657 #define	fr_dsttype	fr_ip.fi_dsttype
658 #define	fr_srctype	fr_ip.fi_srctype
659 #define	fr_dstptr	fr_mip.fi_dstptr
660 #define	fr_srcptr	fr_mip.fi_srcptr
661 #define	fr_dstfunc	fr_mip.fi_dstfunc
662 #define	fr_srcfunc	fr_mip.fi_srcfunc
663 #define	fr_optbits	fr_ip.fi_optmsk
664 #define	fr_optmask	fr_mip.fi_optmsk
665 #define	fr_secbits	fr_ip.fi_secmsk
666 #define	fr_secmask	fr_mip.fi_secmsk
667 #define	fr_authbits	fr_ip.fi_auth
668 #define	fr_authmask	fr_mip.fi_auth
669 #define	fr_flx		fr_ip.fi_flx
670 #define	fr_mflx		fr_mip.fi_flx
671 #define	fr_ifname	fr_ifnames[0]
672 #define	fr_oifname	fr_ifnames[2]
673 #define	fr_ifa		fr_ifas[0]
674 #define	fr_oifa		fr_ifas[2]
675 #define	fr_tif		fr_tifs[0]
676 #define	fr_rif		fr_tifs[1]
677 
678 #define	FR_NOLOGTAG	0
679 
680 #define	FR_CMPSIZ	(sizeof(struct frentry) - \
681 			 offsetof(struct frentry, fr_func))
682 
683 /*
684  * fr_type
685  */
686 #define	FR_T_NONE	0
687 #define	FR_T_IPF	1	/* IPF structures */
688 #define	FR_T_BPFOPC	2	/* BPF opcode */
689 #define	FR_T_CALLFUNC	3	/* callout to function in fr_func only */
690 #define	FR_T_COMPIPF	4	/* compiled C code */
691 #define	FR_T_BUILTIN	0x80000000	/* rule is in kernel space */
692 
693 /*
694  * fr_flags
695  */
696 #define	FR_CALL		0x00000	/* call rule */
697 #define	FR_BLOCK	0x00001	/* do not allow packet to pass */
698 #define	FR_PASS		0x00002	/* allow packet to pass */
699 #define	FR_AUTH		0x00003	/* use authentication */
700 #define	FR_PREAUTH	0x00004	/* require preauthentication */
701 #define	FR_ACCOUNT	0x00005	/* Accounting rule */
702 #define	FR_SKIP		0x00006	/* skip rule */
703 #define	FR_DIVERT	0x00007	/* divert rule */
704 #define	FR_CMDMASK	0x0000f
705 #define	FR_LOG		0x00010	/* Log */
706 #define	FR_LOGB		0x00011	/* Log-fail */
707 #define	FR_LOGP		0x00012	/* Log-pass */
708 #define	FR_LOGMASK	(FR_LOG|FR_CMDMASK)
709 #define	FR_CALLNOW	0x00020	/* call another function (fr_func) if matches */
710 #define	FR_NOTSRCIP	0x00040
711 #define	FR_NOTDSTIP	0x00080
712 #define	FR_QUICK	0x00100	/* match & stop processing list */
713 #define	FR_KEEPFRAG	0x00200	/* keep fragment information */
714 #define	FR_KEEPSTATE	0x00400	/* keep `connection' state information */
715 #define	FR_FASTROUTE	0x00800	/* bypass normal routing */
716 #define	FR_RETRST	0x01000	/* Return TCP RST packet - reset connection */
717 #define	FR_RETICMP	0x02000	/* Return ICMP unreachable packet */
718 #define	FR_FAKEICMP	0x03000	/* Return ICMP unreachable with fake source */
719 #define	FR_OUTQUE	0x04000	/* outgoing packets */
720 #define	FR_INQUE	0x08000	/* ingoing packets */
721 #define	FR_LOGBODY	0x10000	/* Log the body */
722 #define	FR_LOGFIRST	0x20000	/* Log the first byte if state held */
723 #define	FR_LOGORBLOCK	0x40000	/* block the packet if it can't be logged */
724 #define	FR_DUP		0x80000	/* duplicate packet */
725 #define	FR_FRSTRICT	0x100000	/* strict frag. cache */
726 #define	FR_STSTRICT	0x200000	/* strict keep state */
727 #define	FR_NEWISN	0x400000	/* new ISN for outgoing TCP */
728 #define	FR_NOICMPERR	0x800000	/* do not match ICMP errors in state */
729 #define	FR_STATESYNC	0x1000000	/* synchronize state to slave */
730 #define	FR_NOMATCH	0x8000000	/* no match occured */
731 		/*	0x10000000 	FF_LOGPASS */
732 		/*	0x20000000 	FF_LOGBLOCK */
733 		/*	0x40000000 	FF_LOGNOMATCH */
734 		/*	0x80000000 	FF_BLOCKNONIP */
735 #define	FR_COPIED	0x40000000	/* copied from user space */
736 #define	FR_INACTIVE	0x80000000	/* only used when flush'ing rules */
737 
738 #define	FR_RETMASK	(FR_RETICMP|FR_RETRST|FR_FAKEICMP)
739 #define	FR_ISBLOCK(x)	(((x) & FR_CMDMASK) == FR_BLOCK)
740 #define	FR_ISPASS(x)	(((x) & FR_CMDMASK) == FR_PASS)
741 #define	FR_ISAUTH(x)	(((x) & FR_CMDMASK) == FR_AUTH)
742 #define	FR_ISPREAUTH(x)	(((x) & FR_CMDMASK) == FR_PREAUTH)
743 #define	FR_ISACCOUNT(x)	(((x) & FR_CMDMASK) == FR_ACCOUNT)
744 #define	FR_ISSKIP(x)	(((x) & FR_CMDMASK) == FR_SKIP)
745 #define	FR_ISNOMATCH(x)	((x) & FR_NOMATCH)
746 #define	FR_INOUT	(FR_INQUE|FR_OUTQUE)
747 
748 /*
749  * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
750  */
751 #define	FF_LOGPASS	0x10000000
752 #define	FF_LOGBLOCK	0x20000000
753 #define	FF_LOGNOMATCH	0x40000000
754 #define	FF_LOGGING	(FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
755 #define	FF_BLOCKNONIP	0x80000000	/* Solaris2 Only */
756 
757 
758 /*
759  * Structure that passes information on what/how to flush to the kernel.
760  */
761 typedef	struct	ipfflush	{
762 	int	ipflu_how;
763 	int	ipflu_arg;
764 } ipfflush_t;
765 
766 
767 /*
768  *
769  */
770 typedef	struct	ipfgetctl	{
771 	u_int	ipfg_min;	/* min value */
772 	u_int	ipfg_current;	/* current value */
773 	u_int	ipfg_max;	/* max value */
774 	u_int	ipfg_default;	/* default value */
775 	u_int	ipfg_steps;	/* value increments */
776 	char	ipfg_name[40];	/* tag name for this control */
777 } ipfgetctl_t;
778 
779 typedef	struct	ipfsetctl	{
780 	int	ipfs_which;	/* 0 = min 1 = current 2 = max 3 = default */
781 	u_int	ipfs_value;	/* min value */
782 	char	ipfs_name[40];	/* tag name for this control */
783 } ipfsetctl_t;
784 
785 
786 /*
787  * Some of the statistics below are in their own counters, but most are kept
788  * in this single structure so that they can all easily be collected and
789  * copied back as required.
790  *
791  * NOTE: when changing, keep in sync with kstats (below).
792  */
793 typedef	struct	filterstats {
794 	u_long	fr_pass;	/* packets allowed */
795 	u_long	fr_block;	/* packets denied */
796 	u_long	fr_nom;		/* packets which don't match any rule */
797 	u_long	fr_short;	/* packets which are short */
798 	u_long	fr_ppkl;	/* packets allowed and logged */
799 	u_long	fr_bpkl;	/* packets denied and logged */
800 	u_long	fr_npkl;	/* packets unmatched and logged */
801 	u_long	fr_pkl;		/* packets logged */
802 	u_long	fr_skip;	/* packets to be logged but buffer full */
803 	u_long	fr_ret;		/* packets for which a return is sent */
804 	u_long	fr_acct;	/* packets for which counting was performed */
805 	u_long	fr_bnfr;	/* bad attempts to allocate fragment state */
806 	u_long	fr_nfr;		/* new fragment state kept */
807 	u_long	fr_cfr;		/* add new fragment state but complete pkt */
808 	u_long	fr_bads;	/* bad attempts to allocate packet state */
809 	u_long	fr_ads;		/* new packet state kept */
810 	u_long	fr_chit;	/* cached hit */
811 	u_long	fr_tcpbad;	/* TCP checksum check failures */
812 	u_long	fr_pull[2];	/* good and bad pullup attempts */
813 	u_long	fr_badsrc;	/* source received doesn't match route */
814 	u_long	fr_badttl;	/* TTL in packet doesn't reach minimum */
815 	u_long	fr_bad;		/* bad IP packets to the filter */
816 	u_long	fr_ipv6;	/* IPv6 packets in/out */
817 	u_long	fr_ppshit;	/* dropped because of pps ceiling */
818 	u_long	fr_ipud;	/* IP id update failures */
819 } filterstats_t;
820 
821 /*
822  * kstat "copy" of the above - keep in sync!
823  * also keep in sync with initialisation code in solaris.c, ipf_kstat_init().
824  */
825 typedef struct  filter_kstats {
826 	kstat_named_t   fks_pass;	/* see above for comments */
827 	kstat_named_t   fks_block;
828 	kstat_named_t   fks_nom;
829 	kstat_named_t   fks_short;
830 	kstat_named_t   fks_ppkl;
831 	kstat_named_t   fks_bpkl;
832 	kstat_named_t   fks_npkl;
833 	kstat_named_t   fks_pkl;
834 	kstat_named_t   fks_skip;
835 	kstat_named_t   fks_ret;
836 	kstat_named_t   fks_acct;
837 	kstat_named_t   fks_bnfr;
838 	kstat_named_t   fks_nfr;
839 	kstat_named_t   fks_cfr;
840 	kstat_named_t   fks_bads;
841 	kstat_named_t   fks_ads;
842 	kstat_named_t   fks_chit;
843 	kstat_named_t   fks_tcpbad;
844 	kstat_named_t   fks_pull[2];
845 	kstat_named_t   fks_badsrc;
846 	kstat_named_t   fks_badttl;
847 	kstat_named_t   fks_bad;
848 	kstat_named_t   fks_ipv6;
849 	kstat_named_t   fks_ppshit;
850 	kstat_named_t   fks_ipud;
851 } filter_kstats_t;
852 
853 /*
854  * Log structure.  Each packet header logged is prepended by one of these.
855  * Following this in the log records read from the device will be an ipflog
856  * structure which is then followed by any packet data.
857  */
858 typedef	struct	iplog	{
859 	u_32_t		ipl_magic;
860 	u_int		ipl_count;
861 	struct	timeval	ipl_time;
862 	size_t		ipl_dsize;
863 	struct	iplog	*ipl_next;
864 } iplog_t;
865 
866 #define	ipl_sec		ipl_time.tv_sec
867 #define	ipl_usec	ipl_time.tv_usec
868 
869 #define IPL_MAGIC	0x49504c4d	/* 'IPLM' */
870 #define IPL_MAGIC_NAT	0x49504c4e	/* 'IPLN' */
871 #define IPL_MAGIC_STATE	0x49504c53	/* 'IPLS' */
872 #define	IPLOG_SIZE	sizeof(iplog_t)
873 
874 typedef	struct	ipflog	{
875 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
876         (defined(OpenBSD) && (OpenBSD >= 199603))
877 #else
878 	u_int	fl_unit;
879 #endif
880 	u_32_t	fl_rule;
881 	u_32_t	fl_flags;
882 	u_32_t	fl_lflags;
883 	u_32_t	fl_logtag;
884 	ipftag_t	fl_nattag;
885 	u_short	fl_plen;	/* extra data after hlen */
886 	u_short	fl_loglevel;	/* syslog log level */
887 	char	fl_group[FR_GROUPLEN];
888 	u_char	fl_hlen;	/* length of IP headers saved */
889 	u_char	fl_dir;
890 	u_char	fl_xxx[2];	/* pad */
891 	char	fl_ifname[LIFNAMSIZ];
892 } ipflog_t;
893 
894 #ifndef	IPF_LOGGING
895 # define	IPF_LOGGING	0
896 #endif
897 #ifndef	IPF_DEFAULT_PASS
898 # define	IPF_DEFAULT_PASS	FR_PASS
899 #endif
900 
901 #define	DEFAULT_IPFLOGSIZE	8192
902 #ifndef	IPFILTER_LOGSIZE
903 # define	IPFILTER_LOGSIZE	DEFAULT_IPFLOGSIZE
904 #else
905 # if IPFILTER_LOGSIZE < DEFAULT_IPFLOGSIZE
906 #  error IPFILTER_LOGSIZE too small.  Must be >= DEFAULT_IPFLOGSIZE
907 # endif
908 #endif
909 
910 #define	IPF_OPTCOPY	0x07ff00	/* bit mask of copied options */
911 
912 /*
913  * Device filenames for reading log information.  Use ipf on Solaris2 because
914  * ipl is already a name used by something else.
915  */
916 #ifndef	IPL_NAME
917 # ifdef	SOLARIS
918 #  define	IPL_NAME	"/dev/ipf"
919 # else
920 #  define	IPL_NAME	"/dev/ipl"
921 # endif
922 #endif
923 /*
924  * Pathnames for various IP Filter control devices.  Used by LKM
925  * and userland, so defined here.
926  */
927 #define	IPNAT_NAME	"/dev/ipnat"
928 #define	IPSTATE_NAME	"/dev/ipstate"
929 #define	IPAUTH_NAME	"/dev/ipauth"
930 #define	IPSYNC_NAME	"/dev/ipsync"
931 #define	IPSCAN_NAME	"/dev/ipscan"
932 #define	IPLOOKUP_NAME	"/dev/iplookup"
933 
934 #define	IPL_LOGIPF	0	/* Minor device #'s for accessing logs */
935 #define	IPL_LOGNAT	1
936 #define	IPL_LOGSTATE	2
937 #define	IPL_LOGAUTH	3
938 #define	IPL_LOGSYNC	4
939 #define	IPL_LOGSCAN	5
940 #define	IPL_LOGLOOKUP	6
941 #define	IPL_LOGCOUNT	7
942 #define	IPL_LOGMAX	7
943 #define	IPL_LOGSIZE	(IPL_LOGMAX + 1)
944 #define	IPL_LOGALL	-1
945 #define	IPL_LOGNONE	-2
946 
947 /*
948  * For SIOCGETFS
949  */
950 typedef	struct	friostat	{
951 	struct	filterstats	f_st[2];
952 	struct	frentry		*f_ipf[2][2];
953 	struct	frentry		*f_acct[2][2];
954 	struct	frentry		*f_ipf6[2][2];
955 	struct	frentry		*f_acct6[2][2];
956 	struct	frentry		*f_auth;
957 	struct	frgroup		*f_groups[IPL_LOGSIZE][2];
958 	u_long	f_froute[2];
959 	u_long	f_ticks;
960 	int	f_locks[IPL_LOGMAX];
961 	size_t	f_kmutex_sz;
962 	size_t	f_krwlock_sz;
963 	int	f_defpass;	/* default pass - from fr_pass */
964 	int	f_active;	/* 1 or 0 - active rule set */
965 	int	f_running;	/* 1 if running, else 0 */
966 	int	f_logging;	/* 1 if enabled, else 0 */
967 	int	f_features;
968 	char	f_version[32];	/* version string */
969 } friostat_t;
970 
971 #define	f_fin		f_ipf[0]
972 #define	f_fin6		f_ipf6[0]
973 #define	f_fout		f_ipf[1]
974 #define	f_fout6		f_ipf6[1]
975 #define	f_acctin	f_acct[0]
976 #define	f_acctin6	f_acct6[0]
977 #define	f_acctout	f_acct[1]
978 #define	f_acctout6	f_acct6[1]
979 
980 #define	IPF_FEAT_LKM		0x001
981 #define	IPF_FEAT_LOG		0x002
982 #define	IPF_FEAT_LOOKUP		0x004
983 #define	IPF_FEAT_BPF		0x008
984 #define	IPF_FEAT_COMPILED	0x010
985 #define	IPF_FEAT_CKSUM		0x020
986 #define	IPF_FEAT_SYNC		0x040
987 #define	IPF_FEAT_SCAN		0x080
988 #define	IPF_FEAT_IPV6		0x100
989 
990 typedef struct	optlist {
991 	u_short ol_val;
992 	int	ol_bit;
993 } optlist_t;
994 
995 
996 /*
997  * Group list structure.
998  */
999 typedef	struct frgroup {
1000 	struct	frgroup	*fg_next;
1001 	struct	frentry	*fg_head;
1002 	struct	frentry	*fg_start;
1003 	u_32_t	fg_flags;
1004 	int	fg_ref;
1005 	char	fg_name[FR_GROUPLEN];
1006 } frgroup_t;
1007 
1008 #define	FG_NAME(g)	(*(g)->fg_name == '\0' ? "" : (g)->fg_name)
1009 
1010 
1011 /*
1012  * Used by state and NAT tables
1013  */
1014 typedef struct icmpinfo {
1015 	u_short	ici_id;
1016 	u_short	ici_seq;
1017 	u_char	ici_type;
1018 } icmpinfo_t;
1019 
1020 typedef struct udpinfo {
1021 	u_short	us_sport;
1022 	u_short	us_dport;
1023 } udpinfo_t;
1024 
1025 
1026 typedef	struct	tcpdata	{
1027 	u_32_t	td_end;
1028 	u_32_t	td_maxend;
1029 	u_32_t	td_maxwin;
1030 	u_32_t	td_winscale;
1031 	u_32_t	td_maxseg;
1032 	int	td_winflags;
1033 } tcpdata_t;
1034 
1035 #define	TCP_WSCALE_MAX		14
1036 
1037 #define	TCP_WSCALE_SEEN		0x00000001
1038 #define	TCP_WSCALE_FIRST	0x00000002
1039 #define TCP_SACK_PERMIT		0x00000004
1040 
1041 
1042 typedef	struct tcpinfo {
1043 	u_short	ts_sport;
1044 	u_short	ts_dport;
1045 	tcpdata_t ts_data[2];
1046 } tcpinfo_t;
1047 
1048 
1049 /*
1050  * Structures to define a GRE header as seen in a packet.
1051  */
1052 struct	grebits	{
1053 	u_32_t	grb_C:1;
1054 	u_32_t	grb_R:1;
1055 	u_32_t	grb_K:1;
1056 	u_32_t	grb_S:1;
1057 	u_32_t	grb_s:1;
1058 	u_32_t	grb_recur:1;
1059 	u_32_t	grb_A:1;
1060 	u_32_t	grb_flags:3;
1061 	u_32_t	grb_ver:3;
1062 	u_short	grb_ptype;
1063 };
1064 
1065 typedef	struct	grehdr	{
1066 	union	{
1067 		struct	grebits	gru_bits;
1068 		u_short	gru_flags;
1069 	} gr_un;
1070 	u_short	gr_len;
1071 	u_short	gr_call;
1072 } grehdr_t;
1073 
1074 #define	gr_flags	gr_un.gru_flags
1075 #define	gr_bits		gr_un.gru_bits
1076 #define	gr_ptype	gr_bits.grb_ptype
1077 #define	gr_C		gr_bits.grb_C
1078 #define	gr_R		gr_bits.grb_R
1079 #define	gr_K		gr_bits.grb_K
1080 #define	gr_S		gr_bits.grb_S
1081 #define	gr_s		gr_bits.grb_s
1082 #define	gr_recur	gr_bits.grb_recur
1083 #define	gr_A		gr_bits.grb_A
1084 #define	gr_ver		gr_bits.grb_ver
1085 
1086 /*
1087  * GRE information tracked by "keep state"
1088  */
1089 typedef	struct	greinfo	{
1090 	u_short	gs_call[2];
1091 	u_short	gs_flags;
1092 	u_short	gs_ptype;
1093 } greinfo_t;
1094 
1095 #define	GRE_REV(x)	((ntohs(x) >> 13) & 7)
1096 
1097 
1098 /*
1099  * Format of an Authentication header
1100  */
1101 typedef	struct	authhdr	{
1102 	u_char	ah_next;
1103 	u_char	ah_plen;
1104 	u_short	ah_reserved;
1105 	u_32_t	ah_spi;
1106 	u_32_t	ah_seq;
1107 	/* Following the sequence number field is 0 or more bytes of */
1108 	/* authentication data, as specified by ah_plen - RFC 2402.  */
1109 } authhdr_t;
1110 
1111 
1112 /*
1113  * Timeout tail queue list member
1114  */
1115 typedef	struct	ipftqent	{
1116 	struct ipftqent **tqe_pnext;
1117 	struct ipftqent *tqe_next;
1118 	struct	ipftq	*tqe_ifq;
1119 	void	*tqe_parent;		/* pointer back to NAT/state struct */
1120 	u_long	tqe_die;		/* when this entriy is to die */
1121 	u_long	tqe_touched;
1122 	int	tqe_flags;
1123 	int	tqe_state[2];		/* current state of this entry */
1124 } ipftqent_t;
1125 
1126 #define	TQE_RULEBASED	0x00000001
1127 
1128 
1129 /*
1130  * Timeout tail queue head for IPFilter
1131  */
1132 typedef struct  ipftq   {
1133 	ipfmutex_t	ifq_lock;
1134 	u_int	ifq_ttl;
1135 	ipftqent_t	*ifq_head;
1136 	ipftqent_t	**ifq_tail;
1137 	struct	ipftq	*ifq_next;
1138 	struct	ipftq	**ifq_pnext;
1139 	int	ifq_ref;
1140 	u_int	ifq_flags;
1141 } ipftq_t;
1142 
1143 #define	IFQF_USER	0x01		/* User defined aging */
1144 #define	IFQF_DELETE	0x02		/* Marked for deletion */
1145 #define	IFQF_PROXY	0x04		/* Timeout queue in use by a proxy */
1146 
1147 #define	IPF_HZ_MULT	1
1148 #define	IPF_HZ_DIVIDE	2		/* How many times a second ipfilter */
1149 					/* checks its timeout queues.       */
1150 #define	IPF_TTLVAL(x)	(((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE)
1151 
1152 /*
1153  * Structure to define address for pool lookups.
1154  */
1155 typedef	struct	{
1156 	u_char		adf_len;
1157 	sa_family_t	adf_family;
1158 	i6addr_t	adf_addr;
1159 } addrfamily_t;
1160 
1161 
1162 /*
1163  * Object structure description.  For passing through in ioctls.
1164  */
1165 typedef	struct	ipfobj	{
1166 	u_32_t	ipfo_rev;		/* IPFilter version number */
1167 	u_32_t	ipfo_size;		/* size of object at ipfo_ptr */
1168 	void	*ipfo_ptr;		/* pointer to object */
1169 	int	ipfo_type;		/* type of object being pointed to */
1170 	int	ipfo_offset;		/* bytes from ipfo_ptr where to start */
1171 	u_char	ipfo_xxxpad[32];	/* reserved for future use */
1172 } ipfobj_t;
1173 
1174 /*
1175  * ioctl struct for setting what zone further ioctls will act on. ipfz_gz is a
1176  * boolean: set it to 1 to operate on the GZ-controlled stack.
1177  */
1178 typedef	struct	ipfzoneobj	{
1179 	u_32_t		ipfz_gz;			/* GZ stack boolean */
1180 	char		ipfz_zonename[ZONENAME_MAX];	/* zone to act on */
1181 } ipfzoneobj_t;
1182 
1183 #if defined(_KERNEL)
1184 /* Set ipfs_zoneid to this if no zone has been set: */
1185 #define IPFS_ZONE_UNSET	-2
1186 
1187 typedef	struct	ipf_devstate	{
1188 	zoneid_t	ipfs_zoneid;
1189 	minor_t		ipfs_minor;
1190 	boolean_t	ipfs_gz;
1191 } ipf_devstate_t;
1192 #endif
1193 
1194 #define	IPFOBJ_FRENTRY		0	/* struct frentry */
1195 #define	IPFOBJ_IPFSTAT		1	/* struct friostat */
1196 #define	IPFOBJ_IPFINFO		2	/* struct fr_info */
1197 #define	IPFOBJ_AUTHSTAT		3	/* struct fr_authstat */
1198 #define	IPFOBJ_FRAGSTAT		4	/* struct ipfrstat */
1199 #define	IPFOBJ_IPNAT		5	/* struct ipnat */
1200 #define	IPFOBJ_NATSTAT		6	/* struct natstat */
1201 #define	IPFOBJ_STATESAVE	7	/* struct ipstate_save */
1202 #define	IPFOBJ_NATSAVE		8	/* struct nat_save */
1203 #define	IPFOBJ_NATLOOKUP	9	/* struct natlookup */
1204 #define	IPFOBJ_IPSTATE		10	/* struct ipstate */
1205 #define	IPFOBJ_STATESTAT	11	/* struct ips_stat */
1206 #define	IPFOBJ_FRAUTH		12	/* struct frauth */
1207 #define	IPFOBJ_TUNEABLE		13	/* struct ipftune */
1208 #define	IPFOBJ_NAT		14	/* struct nat */
1209 #define	IPFOBJ_IPFITER		15	/* struct ipfruleiter */
1210 #define	IPFOBJ_GENITER		16	/* struct ipfgeniter */
1211 #define	IPFOBJ_GTABLE		17	/* struct ipftable */
1212 #define	IPFOBJ_LOOKUPITER	18	/* struct ipflookupiter */
1213 #define	IPFOBJ_COUNT		19	/* How many #defines are above this? */
1214 
1215 
1216 typedef	union	ipftunevalptr	{
1217 	void	*ipftp_void;
1218 	u_long	*ipftp_long;
1219 	u_int	*ipftp_int;
1220 	u_short	*ipftp_short;
1221 	u_char	*ipftp_char;
1222 } ipftunevalptr_t;
1223 
1224 typedef	struct	ipftuneable	{
1225 	ipftunevalptr_t	ipft_una;
1226 	char		*ipft_name;
1227 	u_long		ipft_min;
1228 	u_long		ipft_max;
1229 	int		ipft_sz;
1230 	int		ipft_flags;
1231 	struct ipftuneable *ipft_next;
1232 } ipftuneable_t;
1233 
1234 #define	ipft_addr	ipft_una.ipftp_void
1235 #define	ipft_plong	ipft_una.ipftp_long
1236 #define	ipft_pint	ipft_una.ipftp_int
1237 #define	ipft_pshort	ipft_una.ipftp_short
1238 #define	ipft_pchar	ipft_una.ipftp_char
1239 
1240 #define	IPFT_RDONLY	1	/* read-only */
1241 #define	IPFT_WRDISABLED	2	/* write when disabled only */
1242 
1243 typedef	union	ipftuneval	{
1244 	u_long	ipftu_long;
1245 	u_int	ipftu_int;
1246 	u_short	ipftu_short;
1247 	u_char	ipftu_char;
1248 } ipftuneval_t;
1249 
1250 typedef	struct	ipftune	{
1251 	void    	*ipft_cookie;
1252 	ipftuneval_t	ipft_un;
1253 	u_long  	ipft_min;
1254 	u_long  	ipft_max;
1255 	int		ipft_sz;
1256 	int		ipft_flags;
1257 	char		ipft_name[80];
1258 } ipftune_t;
1259 
1260 #define	ipft_vlong	ipft_un.ipftu_long
1261 #define	ipft_vint	ipft_un.ipftu_int
1262 #define	ipft_vshort	ipft_un.ipftu_short
1263 #define	ipft_vchar	ipft_un.ipftu_char
1264 
1265 /*
1266  * ipfruleiter is iterator structure used for filter rules.
1267  */
1268 typedef	struct	ipfruleiter {
1269 	int		iri_ver;
1270 	int		iri_inout;
1271 	char		iri_group[FR_GROUPLEN];
1272 	int		iri_active;
1273 	int		iri_nrules;
1274 	frentry_t	*iri_rule;
1275 } ipfruleiter_t;
1276 
1277 /* Values for iri_inout  */
1278 #define	F_IN	0
1279 #define	F_OUT	1
1280 #define	F_ACIN	2
1281 #define	F_ACOUT	3
1282 
1283 /*
1284  * ipfgeniter is generic iterator structure used for nat rules,
1285  * hostmap entries and nat table entries.
1286  */
1287 typedef	struct	ipfgeniter {
1288 	int	igi_type;	/* type of data we're looking at */
1289 	int	igi_nitems;
1290 	void	*igi_data;
1291 } ipfgeniter_t;
1292 
1293 #define	IPFGENITER_IPF		0
1294 #define	IPFGENITER_NAT		1
1295 #define	IPFGENITER_IPNAT	2
1296 #define	IPFGENITER_FRAG		3
1297 #define	IPFGENITER_AUTH		4
1298 #define	IPFGENITER_STATE	5
1299 #define	IPFGENITER_NATFRAG	6
1300 #define	IPFGENITER_HOSTMAP	7
1301 #define	IPFGENITER_LOOKUP	8
1302 
1303 typedef struct  ipftable {
1304         int     ita_type;
1305         void    *ita_table;
1306 } ipftable_t;
1307 
1308 typedef struct ipftoken {
1309         struct ipftoken *ipt_next;
1310         struct ipftoken **ipt_pnext;
1311         void            *ipt_ctx;
1312         void            *ipt_data;
1313         u_long          ipt_die;
1314         int             ipt_type;
1315         int             ipt_uid;
1316         int             ipt_subtype;
1317         int             ipt_alive;
1318 } ipftoken_t;
1319 
1320 
1321 /*
1322  * sync commands
1323  */
1324 #define	IPFSYNC_RESYNC	0
1325 #define	IPFSYNC_NEWIFP	1
1326 #define	IPFSYNC_OLDIFP	2
1327 
1328 
1329 /*
1330 ** HPUX Port
1331 */
1332 #ifdef __hpux
1333 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */
1334 # define	IPF_SMAJ	0	/* temp assignment XXX, not critical */
1335 #endif
1336 
1337 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
1338     (__FreeBSD_version >= 220000)
1339 # define	CDEV_MAJOR	79
1340 #endif
1341 
1342 /*
1343  * Post NetBSD 1.2 has the PFIL interface for packet filters.  This turns
1344  * on those hooks.  We don't need any special mods in non-IP Filter code
1345  * with this!
1346  */
1347 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
1348     (defined(NetBSD1_2) && NetBSD1_2 > 1) || \
1349     (defined(__FreeBSD__) && (__FreeBSD_version >= 500043))
1350 # if (NetBSD >= 199905)
1351 #  define PFIL_HOOKS
1352 # endif
1353 # ifdef PFIL_HOOKS
1354 #  define NETBSD_PF
1355 # endif
1356 #endif
1357 
1358 #ifndef	_KERNEL
1359 extern	int	fr_check __P((struct ip *, int, void *, int, mb_t **, ipf_stack_t *));
1360 extern	int	(*fr_checkp) __P((ip_t *, int, void *, int, mb_t **, ipf_stack_t *));
1361 extern	int	ipf_log __P((void));
1362 extern	struct	ifnet *get_unit __P((char *, int, ipf_stack_t *));
1363 extern	char	*get_ifname __P((struct ifnet *));
1364 # if defined(__NetBSD__) || defined(__OpenBSD__) || \
1365 	  (_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000)
1366 extern	int	frrequest __P((int, u_long, caddr_t, int, int, ipf_stack_t *));
1367 # else
1368 extern	int	iplioctl __P((int, ioctlcmd_t, caddr_t, int));
1369 # endif
1370 extern	int	iplopen __P((dev_t, int));
1371 extern	int	iplclose __P((dev_t, int));
1372 extern	void	m_freem __P((mb_t *));
1373 #else /* #ifndef _KERNEL */
1374 extern	phy_if_t	get_unit __P((char *, int, ipf_stack_t *));
1375 # if defined(__NetBSD__) && defined(PFIL_HOOKS)
1376 extern	void	ipfilterattach __P((int));
1377 # endif
1378 extern	int	ipl_enable __P((void));
1379 extern	int	ipl_disable __P((void));
1380 # ifdef MENTAT
1381 extern	int	fr_check __P((struct ip *, int, void *, int, void *,
1382 			      mblk_t **, ipf_stack_t *));
1383 #  if SOLARIS
1384 #   if SOLARIS2 >= 7
1385 extern	int	iplioctl __P((dev_t, int, intptr_t, int, cred_t *, int *));
1386 #   else
1387 extern	int	iplioctl __P((dev_t, int, int *, int, cred_t *, int *));
1388 #   endif
1389 #   if SOLARIS2 >= 10 && defined(_KERNEL)
1390 extern	int	fr_make_rst __P((fr_info_t *));
1391 extern	int	fr_make_icmp __P((fr_info_t *));
1392 extern	void	fr_calc_chksum __P((fr_info_t *, mb_t *));
1393 extern	ipf_stack_t *ipf_find_stack(const zoneid_t, ipf_devstate_t *);
1394 #   endif
1395 extern	int	iplopen __P((dev_t *, int, int, cred_t *));
1396 extern	int	iplclose __P((dev_t, int, int, cred_t *));
1397 extern	int	iplread __P((dev_t, uio_t *, cred_t *));
1398 extern	int	iplwrite __P((dev_t, uio_t *, cred_t *));
1399 #  endif
1400 #  ifdef __hpux
1401 extern	int	iplopen __P((dev_t, int, intptr_t, int));
1402 extern	int	iplclose __P((dev_t, int, int));
1403 extern	int	iplioctl __P((dev_t, int, caddr_t, int));
1404 extern	int	iplread __P((dev_t, uio_t *));
1405 extern	int	iplwrite __P((dev_t, uio_t *));
1406 extern	int	iplselect __P((dev_t, int));
1407 #  endif
1408 extern	int	ipfsync __P((ipf_stack_t *));
1409 extern	int	fr_qout __P((queue_t *, mblk_t *));
1410 # else /* MENTAT */
1411 extern	int	fr_check __P((struct ip *, int, void *, int, mb_t **, ipf_stack_t *));
1412 extern	int	(*fr_checkp) __P((ip_t *, int, void *, int, mb_t **, ipf_stack_t *));
1413 extern	size_t	mbufchainlen __P((mb_t *));
1414 #  ifdef	__sgi
1415 #   include <sys/cred.h>
1416 extern	int	iplioctl __P((dev_t, int, caddr_t, int, cred_t *, int *));
1417 extern	int	iplopen __P((dev_t *, int, int, cred_t *));
1418 extern	int	iplclose __P((dev_t, int, int, cred_t *));
1419 extern	int	iplread __P((dev_t, uio_t *, cred_t *));
1420 extern	int	iplwrite __P((dev_t, uio_t *, cred_t *));
1421 extern	int	ipfsync __P((ipf_stack_t *));
1422 extern	int	ipfilter_sgi_attach __P((void));
1423 extern	void	ipfilter_sgi_detach __P((void));
1424 extern	void	ipfilter_sgi_intfsync __P((void));
1425 #  else
1426 #   ifdef	IPFILTER_LKM
1427 extern	int	iplidentify __P((char *));
1428 #   endif
1429 #   if (_BSDI_VERSION >= 199510) || (__FreeBSD_version >= 220000) || \
1430       (NetBSD >= 199511) || defined(__OpenBSD__)
1431 #    if defined(__NetBSD__) || (_BSDI_VERSION >= 199701) || \
1432        defined(__OpenBSD__) || (__FreeBSD_version >= 300000)
1433 #     if (__FreeBSD_version >= 500024)
1434 #      if (__FreeBSD_version >= 502116)
1435 extern	int	iplioctl __P((struct cdev*, u_long, caddr_t, int, struct thread *));
1436 #      else
1437 extern	int	iplioctl __P((dev_t, u_long, caddr_t, int, struct thread *));
1438 #      endif /* __FreeBSD_version >= 502116 */
1439 #     else
1440 extern	int	iplioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
1441 #     endif /* __FreeBSD_version >= 500024 */
1442 #    else
1443 extern	int	iplioctl __P((dev_t, int, caddr_t, int, struct proc *));
1444 #    endif
1445 #    if (__FreeBSD_version >= 500024)
1446 #      if (__FreeBSD_version >= 502116)
1447 extern	int	iplopen __P((struct cdev*, int, int, struct thread *));
1448 extern	int	iplclose __P((struct cdev*, int, int, struct thread *));
1449 #      else
1450 extern	int	iplopen __P((dev_t, int, int, struct thread *));
1451 extern	int	iplclose __P((dev_t, int, int, struct thread *));
1452 #      endif /* __FreeBSD_version >= 502116 */
1453 #    else
1454 extern	int	iplopen __P((dev_t, int, int, struct proc *));
1455 extern	int	iplclose __P((dev_t, int, int, struct proc *));
1456 #    endif /* __FreeBSD_version >= 500024 */
1457 #   else
1458 #    ifdef linux
1459 extern	int	iplioctl __P((struct inode *, struct file *, u_int, u_long));
1460 #    else
1461 extern	int	iplopen __P((dev_t, int));
1462 extern	int	iplclose __P((dev_t, int));
1463 extern	int	iplioctl __P((dev_t, int, caddr_t, int));
1464 #    endif
1465 #   endif /* (_BSDI_VERSION >= 199510) */
1466 #   if	BSD >= 199306
1467 #      if (__FreeBSD_version >= 502116)
1468 extern	int	iplread __P((struct cdev*, struct uio *, int));
1469 extern	int	iplwrite __P((struct cdev*, struct uio *, int));
1470 #      else
1471 extern	int	iplread __P((dev_t, struct uio *, int));
1472 extern	int	iplwrite __P((dev_t, struct uio *, int));
1473 #      endif /* __FreeBSD_version >= 502116 */
1474 #   else
1475 #    ifndef linux
1476 extern	int	iplread __P((dev_t, struct uio *));
1477 extern	int	iplwrite __P((dev_t, struct uio *));
1478 #    endif
1479 #   endif /* BSD >= 199306 */
1480 #  endif /* __ sgi */
1481 # endif /* MENTAT */
1482 
1483 #endif /* #ifndef _KERNEL */
1484 
1485 extern	char	*memstr __P((char *, char *, int, int));
1486 extern	int	count4bits __P((u_32_t));
1487 extern	int	count6bits __P((u_32_t *));
1488 extern	int	frrequest __P((int, ioctlcmd_t, caddr_t, int, int, ipf_stack_t *));
1489 extern	char	*getifname __P((struct ifnet *));
1490 extern	int	iplattach __P((ipf_stack_t *));
1491 extern	int	ipldetach __P((ipf_stack_t *));
1492 extern	u_short	ipf_cksum __P((u_short *, int));
1493 extern	int	copyinptr __P((void *, void *, size_t));
1494 extern	int	copyoutptr __P((void *, void *, size_t));
1495 extern	int	fr_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *));
1496 extern	int	fr_inobj __P((void *, void *, int));
1497 extern	int	fr_inobjsz __P((void *, void *, int, int));
1498 extern	int	fr_ioctlswitch __P((int, void *, ioctlcmd_t, int, int, void *,
1499 				    ipf_stack_t *));
1500 extern	int	fr_ipftune __P((ioctlcmd_t, void *, ipf_stack_t *));
1501 extern	int	fr_outobj __P((void *, void *, int));
1502 extern	int	fr_outobjsz __P((void *, void *, int, int));
1503 extern	void	*fr_pullup __P((mb_t *, fr_info_t *, int));
1504 extern	void	fr_resolvedest __P((struct frdest *, int, ipf_stack_t *));
1505 extern	int	fr_resolvefunc __P((void *));
1506 extern	void	*fr_resolvenic __P((char *, int, ipf_stack_t *));
1507 extern	int	fr_send_icmp_err __P((int, fr_info_t *, int));
1508 extern	int	fr_send_reset __P((fr_info_t *));
1509 #if  (__FreeBSD_version < 490000) || !defined(_KERNEL)
1510 extern	int	ppsratecheck __P((struct timeval *, int *, int));
1511 #endif
1512 extern	ipftq_t	*fr_addtimeoutqueue __P((ipftq_t **, u_int, ipf_stack_t *));
1513 extern	void	fr_deletequeueentry __P((ipftqent_t *));
1514 extern	int	fr_deletetimeoutqueue __P((ipftq_t *));
1515 extern	void	fr_freetimeoutqueue __P((ipftq_t *, ipf_stack_t *));
1516 extern	void	fr_movequeue __P((ipftqent_t *, ipftq_t *, ipftq_t *,
1517 				  ipf_stack_t *));
1518 extern	void	fr_queueappend __P((ipftqent_t *, ipftq_t *, void *,
1519 				    ipf_stack_t *));
1520 extern	void	fr_queueback __P((ipftqent_t *, ipf_stack_t *));
1521 extern	void	fr_queuefront __P((ipftqent_t *));
1522 extern	void	fr_checkv4sum __P((fr_info_t *));
1523 extern	int	fr_checkl4sum __P((fr_info_t *));
1524 extern	int	fr_ifpfillv4addr __P((int, struct sockaddr_in *,
1525 				      struct sockaddr_in *, struct in_addr *,
1526 				      struct in_addr *));
1527 extern	int	fr_coalesce __P((fr_info_t *));
1528 #ifdef	USE_INET6
1529 extern	void	fr_checkv6sum __P((fr_info_t *));
1530 extern	int	fr_ifpfillv6addr __P((int, struct sockaddr_in6 *,
1531 				      struct sockaddr_in6 *, struct in_addr *,
1532 				      struct in_addr *));
1533 #endif
1534 
1535 #define	IPFILTER_COMPAT
1536 extern	int	fr_incomptrans __P((ipfobj_t *, void *));
1537 extern	int	fr_outcomptrans __P((ipfobj_t *, void *));
1538 
1539 extern	int		fr_addipftune __P((ipftuneable_t *, ipf_stack_t *));
1540 extern	int		fr_delipftune __P((ipftuneable_t *, ipf_stack_t *));
1541 
1542 extern	int	frflush __P((minor_t, int, int, ipf_stack_t *));
1543 extern	void	frsync __P((int, int, void *, char *, ipf_stack_t *));
1544 #if SOLARIS2 >= 10
1545 extern	void	fr_ifindexsync __P((void *, void *, ipf_stack_t *));
1546 #endif
1547 extern	frgroup_t *fr_addgroup __P((char *, void *, u_32_t, minor_t, int,
1548 				    ipf_stack_t *));
1549 extern	int	fr_derefrule __P((frentry_t **, ipf_stack_t *));
1550 extern	void	fr_delgroup __P((char *, minor_t, int, ipf_stack_t *));
1551 extern	frgroup_t *fr_findgroup __P((char *, minor_t, int, frgroup_t ***,
1552 				     ipf_stack_t *));
1553 
1554 extern	int	fr_loginit __P((ipf_stack_t *));
1555 extern	int	ipflog_clear __P((minor_t, ipf_stack_t *));
1556 extern	int	ipflog_read __P((minor_t, struct uio *, ipf_stack_t *));
1557 extern	int	ipflog __P((fr_info_t *, u_int));
1558 extern	int	ipllog __P((int, fr_info_t *, void **, size_t *, int *, int,
1559 			    ipf_stack_t *));
1560 extern	void	fr_logunload __P((ipf_stack_t *));
1561 
1562 extern	frentry_t	*fr_acctpkt __P((fr_info_t *, u_32_t *));
1563 extern	int		fr_copytolog __P((int, char *, int));
1564 extern	u_short		fr_cksum __P((mb_t *, ip_t *, int, void *));
1565 extern	void		fr_deinitialise __P((ipf_stack_t *));
1566 extern	frentry_t 	*fr_dolog __P((fr_info_t *, u_32_t *));
1567 extern	frentry_t 	*fr_dstgrpmap __P((fr_info_t *, u_32_t *));
1568 extern	void		fr_fixskip __P((frentry_t **, frentry_t *, int));
1569 extern	void		fr_forgetifp __P((void *, ipf_stack_t *));
1570 extern	frentry_t 	*fr_getrulen __P((int, char *, u_32_t,
1571 					  ipf_stack_t *));
1572 extern	void		fr_getstat __P((struct friostat *, ipf_stack_t *));
1573 extern	int		fr_ifpaddr __P((int, int, void *,
1574 					struct in_addr *, struct in_addr *,
1575 					ipf_stack_t *));
1576 extern	int		fr_initialise __P((ipf_stack_t *));
1577 extern	int		fr_lock __P((caddr_t, int *));
1578 extern	int		fr_makefrip __P((int, ip_t *, fr_info_t *));
1579 extern	int		fr_matchtag __P((ipftag_t *, ipftag_t *));
1580 extern	int		fr_matchicmpqueryreply __P((int, icmpinfo_t *,
1581 						    struct icmp *, int));
1582 extern	u_32_t		fr_newisn __P((fr_info_t *));
1583 extern	u_short		fr_nextipid __P((fr_info_t *));
1584 extern	int		fr_rulen __P((int, frentry_t *, ipf_stack_t *));
1585 extern	int		fr_scanlist __P((fr_info_t *, u_32_t));
1586 extern	frentry_t 	*fr_srcgrpmap __P((fr_info_t *, u_32_t *));
1587 extern	int		fr_tcpudpchk __P((fr_info_t *, frtuc_t *));
1588 extern	int		fr_verifysrc __P((fr_info_t *fin));
1589 extern	int		fr_zerostats __P((char *, ipf_stack_t *));
1590 extern	ipftoken_t	*ipf_findtoken __P((int, int, void *, ipf_stack_t *));
1591 extern	int		ipf_getnextrule __P((ipftoken_t *, void *,
1592 					     ipf_stack_t *));
1593 extern  void            ipf_expiretokens __P((ipf_stack_t *));
1594 extern  void            ipf_freetoken __P((ipftoken_t *, ipf_stack_t *));
1595 extern  int             ipf_deltoken __P((int, int, void *, ipf_stack_t *));
1596 extern  int             ipf_genericiter __P((void *, int, void *, ipf_stack_t *));
1597 extern	int		ipf_extraflush __P((int, ipftq_t *, ipftq_t *, ipf_stack_t *));
1598 extern	int		ipf_flushclosing __P((int, int, ipftq_t *, ipftq_t *, ipf_stack_t *));
1599 extern	int		ipf_earlydrop __P((int, ipftq_t *, int, ipf_stack_t *));
1600 
1601 #ifndef	ipf_random
1602 extern	u_32_t		ipf_random __P((void));
1603 #endif
1604 
1605 #if defined(_KERNEL)
1606 extern	int	fr_setzoneid __P((ipf_devstate_t *, void *));
1607 #endif
1608 
1609 extern	char	ipfilter_version[];
1610 #ifdef	USE_INET6
1611 extern	int	icmptoicmp6types[ICMP_MAXTYPE+1];
1612 extern	int	icmptoicmp6unreach[ICMP_MAX_UNREACH];
1613 extern	int	icmpreplytype6[ICMP6_MAXTYPE + 1];
1614 #endif
1615 extern	int	icmpreplytype4[ICMP_MAXTYPE + 1];
1616 extern	frentry_t *ipfrule_match __P((fr_info_t *));
1617 
1618 extern void	ipftuneable_alloc(ipf_stack_t *);
1619 extern void	ipftuneable_free(ipf_stack_t *);
1620 
1621 #endif	/* __IP_FIL_H__ */
1622