xref: /titanic_41/usr/src/uts/common/inet/ipf/netinet/ip_fil.h (revision c4a60461173b2401c7ffb8916e31ecc2cccf65c4)
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 #ifndef	SOLARIS
21 # define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
22 #endif
23 
24 #ifndef	__P
25 # ifdef	__STDC__
26 #  define	__P(x)	x
27 # else
28 #  define	__P(x)	()
29 # endif
30 #endif
31 
32 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51)
33 # define	SIOCADAFR	_IOW('r', 60, struct ipfobj)
34 # define	SIOCRMAFR	_IOW('r', 61, struct ipfobj)
35 # define	SIOCSETFF	_IOW('r', 62, u_int)
36 # define	SIOCGETFF	_IOR('r', 63, u_int)
37 # define	SIOCGETFS	_IOWR('r', 64, struct ipfobj)
38 # define	SIOCIPFFL	_IOWR('r', 65, int)
39 # define	SIOCIPFFB	_IOR('r', 66, int)
40 # define	SIOCADIFR	_IOW('r', 67, struct ipfobj)
41 # define	SIOCRMIFR	_IOW('r', 68, struct ipfobj)
42 # define	SIOCSWAPA	_IOR('r', 69, u_int)
43 # define	SIOCINAFR	_IOW('r', 70, struct ipfobj)
44 # define	SIOCINIFR	_IOW('r', 71, struct ipfobj)
45 # define	SIOCFRENB	_IOW('r', 72, u_int)
46 # define	SIOCFRSYN	_IOW('r', 73, u_int)
47 # define	SIOCFRZST	_IOWR('r', 74, struct ipfobj)
48 # define	SIOCZRLST	_IOWR('r', 75, struct ipfobj)
49 # define	SIOCAUTHW	_IOWR('r', 76, struct ipfobj)
50 # define	SIOCAUTHR	_IOWR('r', 77, struct ipfobj)
51 # define	SIOCATHST	_IOWR('r', 78, struct ipfobj)
52 # define	SIOCSTLCK	_IOWR('r', 79, u_int)
53 # define	SIOCSTPUT	_IOWR('r', 80, struct ipfobj)
54 # define	SIOCSTGET	_IOWR('r', 81, struct ipfobj)
55 # define	SIOCSTGSZ	_IOWR('r', 82, struct ipfobj)
56 # define	SIOCGFRST	_IOWR('r', 83, struct ipfobj)
57 # define	SIOCSETLG	_IOWR('r', 84, int)
58 # define	SIOCGETLG	_IOWR('r', 85, int)
59 # define	SIOCFUNCL	_IOWR('r', 86, struct ipfunc_resolve)
60 # define	SIOCIPFGETNEXT	_IOWR('r', 87, struct ipfobj)
61 # define	SIOCIPFGET	_IOWR('r', 88, struct ipfobj)
62 # define	SIOCIPFSET	_IOWR('r', 89, struct ipfobj)
63 # define	SIOCIPFL6	_IOWR('r', 90, int)
64 # define	SIOCIPFLP	_IOWR('r', 91, int)
65 # define	SIOCIPFITER	_IOWR('r', 92, struct ipfobj)
66 # define	SIOCGENITER	_IOWR('r', 93, struct ipfobj)
67 # define	SIOCGTABL	_IOWR('r', 94, struct ipfobj)
68 # define	SIOCIPFDELTOK	_IOWR('r', 95, int)
69 # define	SIOCLOOKUPITER	_IOWR('r', 96, struct ipfobj)
70 #else
71 # define	SIOCADAFR	_IOW(r, 60, struct ipfobj)
72 # define	SIOCRMAFR	_IOW(r, 61, struct ipfobj)
73 # define	SIOCSETFF	_IOW(r, 62, u_int)
74 # define	SIOCGETFF	_IOR(r, 63, u_int)
75 # define	SIOCGETFS	_IOWR(r, 64, struct ipfobj)
76 # define	SIOCIPFFL	_IOWR(r, 65, int)
77 # define	SIOCIPFFB	_IOR(r, 66, int)
78 # define	SIOCADIFR	_IOW(r, 67, struct ipfobj)
79 # define	SIOCRMIFR	_IOW(r, 68, struct ipfobj)
80 # define	SIOCSWAPA	_IOR(r, 69, u_int)
81 # define	SIOCINAFR	_IOW(r, 70, struct ipfobj)
82 # define	SIOCINIFR	_IOW(r, 71, struct ipfobj)
83 # define	SIOCFRENB	_IOW(r, 72, u_int)
84 # define	SIOCFRSYN	_IOW(r, 73, u_int)
85 # define	SIOCFRZST	_IOWR(r, 74, struct ipfobj)
86 # define	SIOCZRLST	_IOWR(r, 75, struct ipfobj)
87 # define	SIOCAUTHW	_IOWR(r, 76, struct ipfobj)
88 # define	SIOCAUTHR	_IOWR(r, 77, struct ipfobj)
89 # define	SIOCATHST	_IOWR(r, 78, struct ipfobj)
90 # define	SIOCSTLCK	_IOWR(r, 79, u_int)
91 # define	SIOCSTPUT	_IOWR(r, 80, struct ipfobj)
92 # define	SIOCSTGET	_IOWR(r, 81, struct ipfobj)
93 # define	SIOCSTGSZ	_IOWR(r, 82, struct ipfobj)
94 # define	SIOCGFRST	_IOWR(r, 83, struct ipfobj)
95 # define	SIOCSETLG	_IOWR(r, 84, int)
96 # define	SIOCGETLG	_IOWR(r, 85, int)
97 # define	SIOCFUNCL	_IOWR(r, 86, struct ipfunc_resolve)
98 # define	SIOCIPFGETNEXT	_IOWR(r, 87, struct ipfobj)
99 # define	SIOCIPFGET	_IOWR(r, 88, struct ipfobj)
100 # define	SIOCIPFSET	_IOWR(r, 89, struct ipfobj)
101 # define	SIOCIPFL6	_IOWR(r, 90, int)
102 # define	SIOCIPFLP	_IOWR(r, 91, int)
103 # define	SIOCIPFITER	_IOWR(r, 92, struct ipfobj)
104 # define	SIOCGENITER	_IOWR(r, 93, struct ipfobj)
105 # define	SIOCGTABL	_IOWR(r, 94, struct ipfobj)
106 # define	SIOCIPFDELTOK	_IOWR(r, 95, int)
107 # define	SIOCLOOKUPITER	_IOWR(r, 96, struct ipfobj)
108 #endif
109 #define	SIOCADDFR	SIOCADAFR
110 #define	SIOCDELFR	SIOCRMAFR
111 #define	SIOCINSFR	SIOCINAFR
112 # define	SIOCIPFZONESET	_IOWR('r', 97, struct ipfzoneobj)
113 
114 /*
115  * What type of table is getting flushed?
116  */
117 
118 #define	NAT_FLUSH	1
119 #define	STATE_FLUSH	2
120 
121 /*
122  * What table flush options are available?
123  */
124 
125 #define	FLUSH_LIST	0
126 #define	FLUSH_TABLE_ALL		1	/* Flush entire table */
127 #define	FLUSH_TABLE_CLOSING	2	/* Flush "closing" entries" */
128 #define	FLUSH_TABLE_EXTRA	3	/* Targetted flush: almost closed, long idle */
129 
130 #define	VALID_TABLE_FLUSH_OPT(x)	((x) >= 1 && (x) <= 3)
131 
132 /*
133  * Define the default hi and lo watermarks used when flushing the
134  * tables.  The values represent percent full of respective tables.
135  */
136 
137 #define NAT_FLUSH_HI	95
138 #define NAT_FLUSH_LO	75
139 
140 #define ST_FLUSH_HI	95
141 #define ST_FLUSH_LO	75
142 
143 /*
144  * How full are the tables?
145  */
146 
147 #define NAT_TAB_WATER_LEVEL(x)	((x)->ifs_nat_stats.ns_inuse * 100 \
148 				/ (x)->ifs_ipf_nattable_max)
149 
150 #define ST_TAB_WATER_LEVEL(x)	((x)->ifs_ips_num * 100 \
151 				/ (x)->ifs_fr_statemax)
152 
153 struct ipscan;
154 struct ifnet;
155 
156 typedef struct ipf_stack ipf_stack_t;
157 typedef struct fr_info fr_info_t;
158 
159 typedef	int	(* lookupfunc_t) __P((void *, int, void *, fr_info_t *, ipf_stack_t *));
160 
161 /*
162  * i6addr is used as a container for both IPv4 and IPv6 addresses, as well
163  * as other types of objects, depending on its qualifier.
164  */
165 #ifdef	USE_INET6
166 typedef	union	i6addr	{
167 	u_32_t	i6[4];
168 	struct	in_addr	in4;
169 	struct	in6_addr in6;
170 	void	*vptr[2];
171 	lookupfunc_t	lptr[2];
172 } i6addr_t;
173 #define	in6_addr8	in6.s6_addr
174 #else
175 typedef	union	i6addr	{
176 	u_32_t	i6[4];
177 	struct	in_addr	in4;
178 	void	*vptr[2];
179 	lookupfunc_t	lptr[2];
180 } i6addr_t;
181 #endif
182 
183 #define	in4_addr	in4.s_addr
184 #define	iplookupnum	i6[0]
185 #define	iplookuptype	i6[1]
186 /*
187  * NOTE: These DO overlap the above on 64bit systems and this IS recognised.
188  */
189 #define	iplookupptr	vptr[0]
190 #define	iplookupfunc	lptr[1]
191 
192 #define	I60(x)	(((i6addr_t *)(x))->i6[0])
193 #define	I61(x)	(((i6addr_t *)(x))->i6[1])
194 #define	I62(x)	(((i6addr_t *)(x))->i6[2])
195 #define	I63(x)	(((i6addr_t *)(x))->i6[3])
196 #define	HI60(x)	ntohl(((i6addr_t *)(x))->i6[0])
197 #define	HI61(x)	ntohl(((i6addr_t *)(x))->i6[1])
198 #define	HI62(x)	ntohl(((i6addr_t *)(x))->i6[2])
199 #define	HI63(x)	ntohl(((i6addr_t *)(x))->i6[3])
200 
201 #define	IP6_EQ(a,b)	((I63(a) == I63(b)) && (I62(a) == I62(b)) && \
202 			 (I61(a) == I61(b)) && (I60(a) == I60(b)))
203 #define	IP6_NEQ(a,b)	((I63(a) != I63(b)) || (I62(a) != I62(b)) || \
204 			 (I61(a) != I61(b)) || (I60(a) != I60(b)))
205 #define	IP6_ISZERO(a)   ((I60(a) | I61(a) | I62(a) | I63(a)) == 0)
206 #define IP6_NOTZERO(a)  ((I60(a) | I61(a) | I62(a) | I63(a)) != 0)
207 #define	IP6_ISONES(a)	((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \
208 			 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff))
209 #define	IP6_GT(a,b)	(ntohl(HI60(a)) > ntohl(HI60(b)) || \
210 			 (HI60(a) == HI60(b) && \
211 			  (ntohl(HI61(a)) > ntohl(HI61(b)) || \
212 			   (HI61(a) == HI61(b) && \
213 			    (ntohl(HI62(a)) > ntohl(HI62(b)) || \
214 			     (HI62(a) == HI62(b) && \
215 			      ntohl(HI63(a)) > ntohl(HI63(b))))))))
216 #define	IP6_LT(a,b)	(ntohl(HI60(a)) < ntohl(HI60(b)) || \
217 			 (HI60(a) == HI60(b) && \
218 			  (ntohl(HI61(a)) < ntohl(HI61(b)) || \
219 			   (HI61(a) == HI61(b) && \
220 			    (ntohl(HI62(a)) < ntohl(HI62(b)) || \
221 			     (HI62(a) == HI62(b) && \
222 			      ntohl(HI63(a)) < ntohl(HI63(b))))))))
223 #define	NLADD(n,x)	htonl(ntohl(n) + (x))
224 #define	IP6_INC(a)	\
225 		{ i6addr_t *_i6 = (i6addr_t *)(a); \
226 		  _i6->i6[3] = NLADD(_i6->i6[3], 1); \
227 		  if (_i6->i6[3] == 0) { \
228 			_i6->i6[2] = NLADD(_i6->i6[2], 1); \
229 			if (_i6->i6[2] == 0) { \
230 				_i6->i6[1] = NLADD(_i6->i6[1], 1); \
231 				if (_i6->i6[1] == 0) { \
232 					_i6->i6[0] = NLADD(_i6->i6[0], 1); \
233 				} \
234 			} \
235 		  } \
236 		}
237 #define	IP6_ADD(a,x,d)	\
238 		{ i6addr_t *_s = (i6addr_t *)(a); \
239 		  i6addr_t *_d = (i6addr_t *)(d); \
240 		  _d->i6[3] = NLADD(_s->i6[3], x); \
241 		  if (ntohl(_d->i6[3]) < ntohl(_s->i6[3])) { \
242 			_d->i6[2] = NLADD(_d->i6[2], 1); \
243 			if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \
244 				_d->i6[1] = NLADD(_d->i6[1], 1); \
245 				if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \
246 					_d->i6[0] = NLADD(_d->i6[0], 1); \
247 				} \
248 			} \
249 		  } \
250 		}
251 #define	IP6_AND(a,b,d)	{ i6addr_t *_s1 = (i6addr_t *)(a); \
252 			  i6addr_t *_s2 = (i6addr_t *)(b); \
253 			  i6addr_t *_d = (i6addr_t *)(d); \
254 			  _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \
255 			  _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \
256 			  _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \
257 			  _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \
258 			}
259 #define	IP6_MASKEQ(a,m,b) \
260 			(((I60(a) & I60(m)) == I60(b)) && \
261 			 ((I61(a) & I61(m)) == I61(b)) && \
262 			 ((I62(a) & I62(m)) == I62(b)) && \
263 			 ((I63(a) & I63(m)) == I63(b)))
264 #define	IP6_MASKNEQ(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_MERGE(a,b,c) \
270 			{ i6addr_t *_d, *_s1, *_s2; \
271 			  _d = (i6addr_t *)(a); \
272 			  _s1 = (i6addr_t *)(b); \
273 			  _s2 = (i6addr_t *)(c); \
274 			  _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \
275 			  _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \
276 			  _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \
277 			  _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \
278 			}
279 
280 
281 typedef	struct	fr_ip	{
282 	u_32_t	fi_v:4;		/* IP version */
283 	u_32_t	fi_xx:4;	/* spare */
284 	u_32_t	fi_tos:8;	/* IP packet TOS */
285 	u_32_t	fi_ttl:8;	/* IP packet TTL */
286 	u_32_t	fi_p:8;		/* IP packet protocol */
287 	u_32_t	fi_optmsk;	/* bitmask composed from IP options */
288 	i6addr_t fi_src;	/* source address from packet */
289 	i6addr_t fi_dst;	/* destination address from packet */
290 	u_short	fi_secmsk;	/* bitmask composed from IP security options */
291 	u_short	fi_auth;	/* authentication code from IP sec. options */
292 	u_32_t	fi_flx;		/* packet flags */
293 	u_32_t	fi_tcpmsk;	/* TCP options set/reset */
294 	u_32_t	fi_res1;	/* RESERVED */
295 } fr_ip_t;
296 
297 /*
298  * For use in fi_flx
299  */
300 #define	FI_TCPUDP	0x0001	/* TCP/UCP implied comparison*/
301 #define	FI_OPTIONS	0x0002
302 #define	FI_FRAG		0x0004
303 #define	FI_SHORT	0x0008
304 #define	FI_NATED	0x0010
305 #define	FI_MULTICAST	0x0020
306 #define	FI_BROADCAST	0x0040
307 #define	FI_MBCAST	0x0080
308 #define	FI_STATE	0x0100
309 #define	FI_BADNAT	0x0200
310 #define	FI_BAD		0x0400
311 #define	FI_OOW		0x0800	/* Out of state window, else match */
312 #define	FI_ICMPERR	0x1000
313 #define	FI_FRAGBODY	0x2000
314 #define	FI_BADSRC	0x4000
315 #define	FI_LOWTTL	0x8000
316 #define	FI_CMP		0xcf03	/* Not FI_FRAG,FI_NATED,FI_FRAGTAIL,broadcast */
317 #define	FI_ICMPCMP	0x0003	/* Flags we can check for ICMP error packets */
318 #define	FI_WITH		0xeffe	/* Not FI_TCPUDP */
319 #define	FI_V6EXTHDR	0x10000
320 #define	FI_COALESCE	0x20000
321 #define	FI_ICMPQUERY	0x40000
322 #define	FI_NEWNAT	0x80000
323 #define	FI_MOREFRAG	0x100000
324 #define FI_NEG_OOW	0x10000000	/* packet underflows TCP window */
325 #define	FI_NOCKSUM	0x20000000	/* don't do a L4 checksum validation */
326 #define	FI_DONTCACHE	0x40000000	/* don't cache the result */
327 #define	FI_IGNORE	0x80000000
328 
329 #define	fi_saddr	fi_src.in4.s_addr
330 #define	fi_daddr	fi_dst.in4.s_addr
331 #define	fi_srcnum	fi_src.iplookupnum
332 #define	fi_dstnum	fi_dst.iplookupnum
333 #define	fi_srctype	fi_src.iplookuptype
334 #define	fi_dsttype	fi_dst.iplookuptype
335 #define	fi_srcptr	fi_src.iplookupptr
336 #define	fi_dstptr	fi_dst.iplookupptr
337 #define	fi_srcfunc	fi_src.iplookupfunc
338 #define	fi_dstfunc	fi_dst.iplookupfunc
339 
340 
341 /*
342  * These are both used by the state and NAT code to indicate that one port or
343  * the other should be treated as a wildcard.
344  * NOTE: When updating, check bit masks in ip_state.h and update there too.
345  */
346 #define	SI_W_SPORT	0x00000100
347 #define	SI_W_DPORT	0x00000200
348 #define	SI_WILDP	(SI_W_SPORT|SI_W_DPORT)
349 #define	SI_W_SADDR	0x00000400
350 #define	SI_W_DADDR	0x00000800
351 #define	SI_WILDA	(SI_W_SADDR|SI_W_DADDR)
352 #define	SI_NEWFR	0x00001000
353 #define	SI_CLONE	0x00002000
354 #define	SI_CLONED	0x00004000
355 
356 
357 
358 
359 struct	fr_info	{
360 	void	*fin_ifp;		/* interface packet is `on' */
361 	fr_ip_t	fin_fi;		/* IP Packet summary */
362 	union	{
363 		u_short	fid_16[2];	/* TCP/UDP ports, ICMP code/type */
364 		u_32_t	fid_32;
365 	} fin_dat;
366 	int	fin_out;		/* in or out ? 1 == out, 0 == in */
367 	int	fin_rev;		/* state only: 1 = reverse */
368 	u_short	fin_hlen;		/* length of IP header in bytes */
369 	u_char	fin_tcpf;		/* TCP header flags (SYN, ACK, etc) */
370 	u_char	fin_icode;		/* ICMP error to return */
371 	u_32_t	fin_rule;		/* rule # last matched */
372 	char	fin_group[FR_GROUPLEN];	/* group number, -1 for none */
373 	struct	frentry *fin_fr;	/* last matching rule */
374 	void	*fin_dp;		/* start of data past IP header */
375 	int	fin_dlen;		/* length of data portion of packet */
376 	int	fin_plen;
377 	int	fin_ipoff;		/* # bytes from buffer start to hdr */
378 	u_32_t	fin_id;			/* IP packet id field */
379 	u_short	fin_off;
380 	int	fin_depth;		/* Group nesting depth */
381 	int	fin_error;		/* Error code to return */
382 	u_int	fin_pktnum;
383 	void	*fin_nattag;
384 	union {
385 		ip_t	*fip_ip;
386 #ifdef	USE_INET6
387 		ip6_t	*fip_ip6;
388 #endif
389 	} fin_ipu;
390 	mb_t	**fin_mp;		/* pointer to pointer to mbuf */
391 	mb_t	*fin_m;			/* pointer to mbuf */
392 #ifdef	MENTAT
393 	mb_t	*fin_qfm;		/* pointer to mblk where pkt starts */
394 	void	*fin_qpi;
395 	ipf_stack_t *fin_ifs;
396 #endif
397 #ifdef	__sgi
398 	void	*fin_hbuf;
399 #endif
400 };
401 
402 #define	fin_ip		fin_ipu.fip_ip
403 #define	fin_ip6		fin_ipu.fip_ip6
404 #define	fin_v		fin_fi.fi_v
405 #define	fin_p		fin_fi.fi_p
406 #define	fin_flx		fin_fi.fi_flx
407 #define	fin_optmsk	fin_fi.fi_optmsk
408 #define	fin_secmsk	fin_fi.fi_secmsk
409 #define	fin_auth	fin_fi.fi_auth
410 #define	fin_src		fin_fi.fi_src.in4
411 #define	fin_saddr	fin_fi.fi_saddr
412 #define	fin_dst		fin_fi.fi_dst.in4
413 #define	fin_daddr	fin_fi.fi_daddr
414 #define	fin_data	fin_dat.fid_16
415 #define	fin_sport	fin_dat.fid_16[0]
416 #define	fin_dport	fin_dat.fid_16[1]
417 #define	fin_ports	fin_dat.fid_32
418 
419 #ifdef	USE_INET6
420 # define	fin_src6	fin_fi.fi_src
421 # define	fin_dst6	fin_fi.fi_dst
422 # define	fin_dstip6	fin_fi.fi_dst.in6
423 # define	fin_srcip6	fin_fi.fi_src.in6
424 #endif
425 
426 #define	IPF_IN	0
427 #define	IPF_OUT	1
428 
429 typedef	struct frentry	*(*ipfunc_t) __P((fr_info_t *, u_32_t *));
430 typedef	int		(*ipfuncinit_t) __P((struct frentry *,
431 					     ipf_stack_t *));
432 
433 typedef	struct	ipfunc_resolve	{
434 	char		ipfu_name[32];
435 	ipfunc_t	ipfu_addr;
436 	ipfuncinit_t	ipfu_init;
437 } ipfunc_resolve_t;
438 
439 /*
440  * Size for compares on fr_info structures
441  */
442 #define	FI_CSIZE	offsetof(fr_info_t, fin_icode)
443 #define	FI_LCSIZE	offsetof(fr_info_t, fin_dp)
444 
445 /*
446  * Size for copying cache fr_info structure
447  */
448 #define	FI_COPYSIZE	offsetof(fr_info_t, fin_dp)
449 
450 /*
451  * Structure for holding IPFilter's tag information
452  */
453 #define	IPFTAG_LEN	16
454 typedef	struct	{
455 	union	{
456 		u_32_t	iptu_num[4];
457 		char	iptu_tag[IPFTAG_LEN];
458 	} ipt_un;
459 	int	ipt_not;
460 } ipftag_t;
461 
462 #define	ipt_tag	ipt_un.iptu_tag
463 #define	ipt_num	ipt_un.iptu_num
464 
465 
466 /*
467  * This structure is used to hold information about the next hop for where
468  * to forward a packet.
469  */
470 typedef	struct	frdest	{
471 	void	*fd_ifp;
472 	i6addr_t	fd_ip6;
473 	char	fd_ifname[LIFNAMSIZ];
474 } frdest_t;
475 
476 #define	fd_ip	fd_ip6.in4
477 
478 
479 /*
480  * This structure holds information about a port comparison.
481  */
482 typedef	struct	frpcmp	{
483 	int	frp_cmp;	/* data for port comparisons */
484 	u_short	frp_port;	/* top port for <> and >< */
485 	u_short	frp_top;	/* top port for <> and >< */
486 } frpcmp_t;
487 
488 #define FR_NONE 0
489 #define FR_EQUAL 1
490 #define FR_NEQUAL 2
491 #define FR_LESST 3
492 #define FR_GREATERT 4
493 #define FR_LESSTE 5
494 #define FR_GREATERTE 6
495 #define FR_OUTRANGE 7
496 #define FR_INRANGE 8
497 #define FR_INCRANGE 9
498 
499 /*
500  * Structure containing all the relevant TCP things that can be checked in
501  * a filter rule.
502  */
503 typedef	struct	frtuc	{
504 	u_char		ftu_tcpfm;	/* tcp flags mask */
505 	u_char		ftu_tcpf;	/* tcp flags */
506 	frpcmp_t	ftu_src;
507 	frpcmp_t	ftu_dst;
508 } frtuc_t;
509 
510 #define	ftu_scmp	ftu_src.frp_cmp
511 #define	ftu_dcmp	ftu_dst.frp_cmp
512 #define	ftu_sport	ftu_src.frp_port
513 #define	ftu_dport	ftu_dst.frp_port
514 #define	ftu_stop	ftu_src.frp_top
515 #define	ftu_dtop	ftu_dst.frp_top
516 
517 #define	FR_TCPFMAX	0x3f
518 
519 /*
520  * This structure makes up what is considered to be the IPFilter specific
521  * matching components of a filter rule, as opposed to the data structures
522  * used to define the result which are in frentry_t and not here.
523  */
524 typedef	struct	fripf	{
525 	fr_ip_t	fri_ip;
526 	fr_ip_t	fri_mip;	/* mask structure */
527 
528 	u_short	fri_icmpm;		/* data for ICMP packets (mask) */
529 	u_short	fri_icmp;
530 
531 	frtuc_t	fri_tuc;
532 	int	fri_satype;		/* addres type */
533 	int	fri_datype;		/* addres type */
534 	int	fri_sifpidx;		/* doing dynamic addressing */
535 	int	fri_difpidx;		/* index into fr_ifps[] to use when */
536 } fripf_t;
537 
538 #define	fri_dstnum	fri_ip.fi_dstnum
539 #define	fri_srcnum	fri_mip.fi_srcnum
540 #define	fri_dstptr	fri_ip.fi_dstptr
541 #define	fri_srcptr	fri_mip.fi_srcptr
542 
543 #define	FRI_NORMAL	0	/* Normal address */
544 #define	FRI_DYNAMIC	1	/* dynamic address */
545 #define	FRI_LOOKUP	2	/* address is a pool # */
546 #define	FRI_RANGE	3	/* address/mask is a range */
547 #define	FRI_NETWORK	4	/* network address from if */
548 #define	FRI_BROADCAST	5	/* broadcast address from if */
549 #define	FRI_PEERADDR	6	/* Peer address for P-to-P */
550 #define	FRI_NETMASKED	7	/* network address with netmask from if */
551 
552 
553 typedef	struct	frentry	* (* frentfunc_t) __P((fr_info_t *));
554 
555 typedef	struct	frentry {
556 	ipfmutex_t	fr_lock;
557 	struct	frentry	*fr_next;
558 	struct	frentry	**fr_grp;
559 	struct	ipscan	*fr_isc;
560 	void	*fr_ifas[4];
561 	void	*fr_ptr;	/* for use with fr_arg */
562 	char	*fr_comment;	/* text comment for rule */
563 	int	fr_ref;		/* reference count - for grouping */
564 	int	fr_statecnt;	/* state count - for limit rules */
565 	/*
566 	 * These are only incremented when a packet  matches this rule and
567 	 * it is the last match
568 	 */
569 	U_QUAD_T	fr_hits;
570 	U_QUAD_T	fr_bytes;
571 
572 	/*
573 	 * For PPS rate limiting
574 	 */
575 	struct timeval	fr_lastpkt;
576 	int		fr_curpps;
577 
578 	union	{
579 		void		*fru_data;
580 		caddr_t		fru_caddr;
581 		fripf_t		*fru_ipf;
582 		frentfunc_t	fru_func;
583 	} fr_dun;
584 
585 	/*
586 	 * Fields after this may not change whilst in the kernel.
587 	 */
588 	ipfunc_t fr_func; 	/* call this function */
589 	int	fr_dsize;
590 	int	fr_pps;
591 	int	fr_statemax;	/* max reference count */
592 	int	fr_flineno;	/* line number from conf file */
593 	u_32_t	fr_type;
594 	u_32_t	fr_flags;	/* per-rule flags && options (see below) */
595 	u_32_t	fr_logtag;	/* user defined log tag # */
596 	u_32_t	fr_collect;	/* collection number */
597 	u_int	fr_arg;		/* misc. numeric arg for rule */
598 	u_int	fr_loglevel;	/* syslog log facility + priority */
599 	u_int	fr_age[2];	/* non-TCP timeouts */
600 	u_char	fr_v;
601 	u_char	fr_icode;	/* return ICMP code */
602 	char	fr_group[FR_GROUPLEN];	/* group to which this rule belongs */
603 	char	fr_grhead[FR_GROUPLEN];	/* group # which this rule starts */
604 	ipftag_t fr_nattag;
605 	char	fr_ifnames[4][LIFNAMSIZ];
606 	char	fr_isctag[16];
607 	frdest_t fr_tifs[2];	/* "to"/"reply-to" interface */
608 	frdest_t fr_dif;	/* duplicate packet interface */
609 	/*
610 	 * This must be last and will change after loaded into the kernel.
611 	 */
612 	u_int	fr_cksum;	/* checksum on filter rules for performance */
613 } frentry_t;
614 
615 #define	fr_caddr	fr_dun.fru_caddr
616 #define	fr_data		fr_dun.fru_data
617 #define	fr_dfunc	fr_dun.fru_func
618 #define	fr_ipf		fr_dun.fru_ipf
619 #define	fr_ip		fr_ipf->fri_ip
620 #define	fr_mip		fr_ipf->fri_mip
621 #define	fr_icmpm	fr_ipf->fri_icmpm
622 #define	fr_icmp		fr_ipf->fri_icmp
623 #define	fr_tuc		fr_ipf->fri_tuc
624 #define	fr_satype	fr_ipf->fri_satype
625 #define	fr_datype	fr_ipf->fri_datype
626 #define	fr_sifpidx	fr_ipf->fri_sifpidx
627 #define	fr_difpidx	fr_ipf->fri_difpidx
628 #define	fr_proto	fr_ip.fi_p
629 #define	fr_mproto	fr_mip.fi_p
630 #define	fr_ttl		fr_ip.fi_ttl
631 #define	fr_mttl		fr_mip.fi_ttl
632 #define	fr_tos		fr_ip.fi_tos
633 #define	fr_mtos		fr_mip.fi_tos
634 #define	fr_tcpfm	fr_tuc.ftu_tcpfm
635 #define	fr_tcpf		fr_tuc.ftu_tcpf
636 #define	fr_scmp		fr_tuc.ftu_scmp
637 #define	fr_dcmp		fr_tuc.ftu_dcmp
638 #define	fr_dport	fr_tuc.ftu_dport
639 #define	fr_sport	fr_tuc.ftu_sport
640 #define	fr_stop		fr_tuc.ftu_stop
641 #define	fr_dtop		fr_tuc.ftu_dtop
642 #define	fr_dst		fr_ip.fi_dst.in4
643 #define	fr_daddr	fr_ip.fi_dst.in4.s_addr
644 #define	fr_src		fr_ip.fi_src.in4
645 #define	fr_saddr	fr_ip.fi_src.in4.s_addr
646 #define	fr_dmsk		fr_mip.fi_dst.in4
647 #define	fr_dmask	fr_mip.fi_dst.in4.s_addr
648 #define	fr_smsk		fr_mip.fi_src.in4
649 #define	fr_smask	fr_mip.fi_src.in4.s_addr
650 #define	fr_dstnum	fr_ip.fi_dstnum
651 #define	fr_srcnum	fr_ip.fi_srcnum
652 #define	fr_dsttype	fr_ip.fi_dsttype
653 #define	fr_srctype	fr_ip.fi_srctype
654 #define	fr_dstptr	fr_mip.fi_dstptr
655 #define	fr_srcptr	fr_mip.fi_srcptr
656 #define	fr_dstfunc	fr_mip.fi_dstfunc
657 #define	fr_srcfunc	fr_mip.fi_srcfunc
658 #define	fr_optbits	fr_ip.fi_optmsk
659 #define	fr_optmask	fr_mip.fi_optmsk
660 #define	fr_secbits	fr_ip.fi_secmsk
661 #define	fr_secmask	fr_mip.fi_secmsk
662 #define	fr_authbits	fr_ip.fi_auth
663 #define	fr_authmask	fr_mip.fi_auth
664 #define	fr_flx		fr_ip.fi_flx
665 #define	fr_mflx		fr_mip.fi_flx
666 #define	fr_ifname	fr_ifnames[0]
667 #define	fr_oifname	fr_ifnames[2]
668 #define	fr_ifa		fr_ifas[0]
669 #define	fr_oifa		fr_ifas[2]
670 #define	fr_tif		fr_tifs[0]
671 #define	fr_rif		fr_tifs[1]
672 
673 #define	FR_NOLOGTAG	0
674 
675 #ifndef	offsetof
676 #define	offsetof(t,m)	(size_t)((&((t *)0)->m))
677 #endif
678 #define	FR_CMPSIZ	(sizeof(struct frentry) - \
679 			 offsetof(struct frentry, fr_func))
680 
681 /*
682  * fr_type
683  */
684 #define	FR_T_NONE	0
685 #define	FR_T_IPF	1	/* IPF structures */
686 #define	FR_T_BPFOPC	2	/* BPF opcode */
687 #define	FR_T_CALLFUNC	3	/* callout to function in fr_func only */
688 #define	FR_T_COMPIPF	4	/* compiled C code */
689 #define	FR_T_BUILTIN	0x80000000	/* rule is in kernel space */
690 
691 /*
692  * fr_flags
693  */
694 #define	FR_CALL		0x00000	/* call rule */
695 #define	FR_BLOCK	0x00001	/* do not allow packet to pass */
696 #define	FR_PASS		0x00002	/* allow packet to pass */
697 #define	FR_AUTH		0x00003	/* use authentication */
698 #define	FR_PREAUTH	0x00004	/* require preauthentication */
699 #define	FR_ACCOUNT	0x00005	/* Accounting rule */
700 #define	FR_SKIP		0x00006	/* skip rule */
701 #define	FR_DIVERT	0x00007	/* divert rule */
702 #define	FR_CMDMASK	0x0000f
703 #define	FR_LOG		0x00010	/* Log */
704 #define	FR_LOGB		0x00011	/* Log-fail */
705 #define	FR_LOGP		0x00012	/* Log-pass */
706 #define	FR_LOGMASK	(FR_LOG|FR_CMDMASK)
707 #define	FR_CALLNOW	0x00020	/* call another function (fr_func) if matches */
708 #define	FR_NOTSRCIP	0x00040
709 #define	FR_NOTDSTIP	0x00080
710 #define	FR_QUICK	0x00100	/* match & stop processing list */
711 #define	FR_KEEPFRAG	0x00200	/* keep fragment information */
712 #define	FR_KEEPSTATE	0x00400	/* keep `connection' state information */
713 #define	FR_FASTROUTE	0x00800	/* bypass normal routing */
714 #define	FR_RETRST	0x01000	/* Return TCP RST packet - reset connection */
715 #define	FR_RETICMP	0x02000	/* Return ICMP unreachable packet */
716 #define	FR_FAKEICMP	0x03000	/* Return ICMP unreachable with fake source */
717 #define	FR_OUTQUE	0x04000	/* outgoing packets */
718 #define	FR_INQUE	0x08000	/* ingoing packets */
719 #define	FR_LOGBODY	0x10000	/* Log the body */
720 #define	FR_LOGFIRST	0x20000	/* Log the first byte if state held */
721 #define	FR_LOGORBLOCK	0x40000	/* block the packet if it can't be logged */
722 #define	FR_DUP		0x80000	/* duplicate packet */
723 #define	FR_FRSTRICT	0x100000	/* strict frag. cache */
724 #define	FR_STSTRICT	0x200000	/* strict keep state */
725 #define	FR_NEWISN	0x400000	/* new ISN for outgoing TCP */
726 #define	FR_NOICMPERR	0x800000	/* do not match ICMP errors in state */
727 #define	FR_STATESYNC	0x1000000	/* synchronize state to slave */
728 #define	FR_NOMATCH	0x8000000	/* no match occured */
729 		/*	0x10000000 	FF_LOGPASS */
730 		/*	0x20000000 	FF_LOGBLOCK */
731 		/*	0x40000000 	FF_LOGNOMATCH */
732 		/*	0x80000000 	FF_BLOCKNONIP */
733 #define	FR_COPIED	0x40000000	/* copied from user space */
734 #define	FR_INACTIVE	0x80000000	/* only used when flush'ing rules */
735 
736 #define	FR_RETMASK	(FR_RETICMP|FR_RETRST|FR_FAKEICMP)
737 #define	FR_ISBLOCK(x)	(((x) & FR_CMDMASK) == FR_BLOCK)
738 #define	FR_ISPASS(x)	(((x) & FR_CMDMASK) == FR_PASS)
739 #define	FR_ISAUTH(x)	(((x) & FR_CMDMASK) == FR_AUTH)
740 #define	FR_ISPREAUTH(x)	(((x) & FR_CMDMASK) == FR_PREAUTH)
741 #define	FR_ISACCOUNT(x)	(((x) & FR_CMDMASK) == FR_ACCOUNT)
742 #define	FR_ISSKIP(x)	(((x) & FR_CMDMASK) == FR_SKIP)
743 #define	FR_ISNOMATCH(x)	((x) & FR_NOMATCH)
744 #define	FR_INOUT	(FR_INQUE|FR_OUTQUE)
745 
746 /*
747  * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
748  */
749 #define	FF_LOGPASS	0x10000000
750 #define	FF_LOGBLOCK	0x20000000
751 #define	FF_LOGNOMATCH	0x40000000
752 #define	FF_LOGGING	(FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
753 #define	FF_BLOCKNONIP	0x80000000	/* Solaris2 Only */
754 
755 
756 /*
757  * Structure that passes information on what/how to flush to the kernel.
758  */
759 typedef	struct	ipfflush	{
760 	int	ipflu_how;
761 	int	ipflu_arg;
762 } ipfflush_t;
763 
764 
765 /*
766  *
767  */
768 typedef	struct	ipfgetctl	{
769 	u_int	ipfg_min;	/* min value */
770 	u_int	ipfg_current;	/* current value */
771 	u_int	ipfg_max;	/* max value */
772 	u_int	ipfg_default;	/* default value */
773 	u_int	ipfg_steps;	/* value increments */
774 	char	ipfg_name[40];	/* tag name for this control */
775 } ipfgetctl_t;
776 
777 typedef	struct	ipfsetctl	{
778 	int	ipfs_which;	/* 0 = min 1 = current 2 = max 3 = default */
779 	u_int	ipfs_value;	/* min value */
780 	char	ipfs_name[40];	/* tag name for this control */
781 } ipfsetctl_t;
782 
783 
784 /*
785  * Some of the statistics below are in their own counters, but most are kept
786  * in this single structure so that they can all easily be collected and
787  * copied back as required.
788  *
789  * NOTE: when changing, keep in sync with kstats (below).
790  */
791 typedef	struct	filterstats {
792 	u_long	fr_pass;	/* packets allowed */
793 	u_long	fr_block;	/* packets denied */
794 	u_long	fr_nom;		/* packets which don't match any rule */
795 	u_long	fr_short;	/* packets which are short */
796 	u_long	fr_ppkl;	/* packets allowed and logged */
797 	u_long	fr_bpkl;	/* packets denied and logged */
798 	u_long	fr_npkl;	/* packets unmatched and logged */
799 	u_long	fr_pkl;		/* packets logged */
800 	u_long	fr_skip;	/* packets to be logged but buffer full */
801 	u_long	fr_ret;		/* packets for which a return is sent */
802 	u_long	fr_acct;	/* packets for which counting was performed */
803 	u_long	fr_bnfr;	/* bad attempts to allocate fragment state */
804 	u_long	fr_nfr;		/* new fragment state kept */
805 	u_long	fr_cfr;		/* add new fragment state but complete pkt */
806 	u_long	fr_bads;	/* bad attempts to allocate packet state */
807 	u_long	fr_ads;		/* new packet state kept */
808 	u_long	fr_chit;	/* cached hit */
809 	u_long	fr_tcpbad;	/* TCP checksum check failures */
810 	u_long	fr_pull[2];	/* good and bad pullup attempts */
811 	u_long	fr_badsrc;	/* source received doesn't match route */
812 	u_long	fr_badttl;	/* TTL in packet doesn't reach minimum */
813 	u_long	fr_bad;		/* bad IP packets to the filter */
814 	u_long	fr_ipv6;	/* IPv6 packets in/out */
815 	u_long	fr_ppshit;	/* dropped because of pps ceiling */
816 	u_long	fr_ipud;	/* IP id update failures */
817 } filterstats_t;
818 
819 /*
820  * kstat "copy" of the above - keep in sync!
821  * also keep in sync with initialisation code in solaris.c, ipf_kstat_init().
822  */
823 typedef struct  filter_kstats {
824 	kstat_named_t   fks_pass;	/* see above for comments */
825 	kstat_named_t   fks_block;
826 	kstat_named_t   fks_nom;
827 	kstat_named_t   fks_short;
828 	kstat_named_t   fks_ppkl;
829 	kstat_named_t   fks_bpkl;
830 	kstat_named_t   fks_npkl;
831 	kstat_named_t   fks_pkl;
832 	kstat_named_t   fks_skip;
833 	kstat_named_t   fks_ret;
834 	kstat_named_t   fks_acct;
835 	kstat_named_t   fks_bnfr;
836 	kstat_named_t   fks_nfr;
837 	kstat_named_t   fks_cfr;
838 	kstat_named_t   fks_bads;
839 	kstat_named_t   fks_ads;
840 	kstat_named_t   fks_chit;
841 	kstat_named_t   fks_tcpbad;
842 	kstat_named_t   fks_pull[2];
843 	kstat_named_t   fks_badsrc;
844 	kstat_named_t   fks_badttl;
845 	kstat_named_t   fks_bad;
846 	kstat_named_t   fks_ipv6;
847 	kstat_named_t   fks_ppshit;
848 	kstat_named_t   fks_ipud;
849 } filter_kstats_t;
850 
851 /*
852  * Log structure.  Each packet header logged is prepended by one of these.
853  * Following this in the log records read from the device will be an ipflog
854  * structure which is then followed by any packet data.
855  */
856 typedef	struct	iplog	{
857 	u_32_t		ipl_magic;
858 	u_int		ipl_count;
859 	struct	timeval	ipl_time;
860 	size_t		ipl_dsize;
861 	struct	iplog	*ipl_next;
862 } iplog_t;
863 
864 #define	ipl_sec		ipl_time.tv_sec
865 #define	ipl_usec	ipl_time.tv_usec
866 
867 #define IPL_MAGIC	0x49504c4d	/* 'IPLM' */
868 #define IPL_MAGIC_NAT	0x49504c4e	/* 'IPLN' */
869 #define IPL_MAGIC_STATE	0x49504c53	/* 'IPLS' */
870 #define	IPLOG_SIZE	sizeof(iplog_t)
871 
872 typedef	struct	ipflog	{
873 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
874         (defined(OpenBSD) && (OpenBSD >= 199603))
875 #else
876 	u_int	fl_unit;
877 #endif
878 	u_32_t	fl_rule;
879 	u_32_t	fl_flags;
880 	u_32_t	fl_lflags;
881 	u_32_t	fl_logtag;
882 	ipftag_t	fl_nattag;
883 	u_short	fl_plen;	/* extra data after hlen */
884 	u_short	fl_loglevel;	/* syslog log level */
885 	char	fl_group[FR_GROUPLEN];
886 	u_char	fl_hlen;	/* length of IP headers saved */
887 	u_char	fl_dir;
888 	u_char	fl_xxx[2];	/* pad */
889 	char	fl_ifname[LIFNAMSIZ];
890 } ipflog_t;
891 
892 #ifndef	IPF_LOGGING
893 # define	IPF_LOGGING	0
894 #endif
895 #ifndef	IPF_DEFAULT_PASS
896 # define	IPF_DEFAULT_PASS	FR_PASS
897 #endif
898 
899 #define	DEFAULT_IPFLOGSIZE	8192
900 #ifndef	IPFILTER_LOGSIZE
901 # define	IPFILTER_LOGSIZE	DEFAULT_IPFLOGSIZE
902 #else
903 # if IPFILTER_LOGSIZE < DEFAULT_IPFLOGSIZE
904 #  error IPFILTER_LOGSIZE too small.  Must be >= DEFAULT_IPFLOGSIZE
905 # endif
906 #endif
907 
908 #define	IPF_OPTCOPY	0x07ff00	/* bit mask of copied options */
909 
910 /*
911  * Device filenames for reading log information.  Use ipf on Solaris2 because
912  * ipl is already a name used by something else.
913  */
914 #ifndef	IPL_NAME
915 # if	SOLARIS
916 #  define	IPL_NAME	"/dev/ipf"
917 # else
918 #  define	IPL_NAME	"/dev/ipl"
919 # endif
920 #endif
921 /*
922  * Pathnames for various IP Filter control devices.  Used by LKM
923  * and userland, so defined here.
924  */
925 #define	IPNAT_NAME	"/dev/ipnat"
926 #define	IPSTATE_NAME	"/dev/ipstate"
927 #define	IPAUTH_NAME	"/dev/ipauth"
928 #define	IPSYNC_NAME	"/dev/ipsync"
929 #define	IPSCAN_NAME	"/dev/ipscan"
930 #define	IPLOOKUP_NAME	"/dev/iplookup"
931 
932 #define	IPL_LOGIPF	0	/* Minor device #'s for accessing logs */
933 #define	IPL_LOGNAT	1
934 #define	IPL_LOGSTATE	2
935 #define	IPL_LOGAUTH	3
936 #define	IPL_LOGSYNC	4
937 #define	IPL_LOGSCAN	5
938 #define	IPL_LOGLOOKUP	6
939 #define	IPL_LOGCOUNT	7
940 #define	IPL_LOGMAX	7
941 #define	IPL_LOGSIZE	(IPL_LOGMAX + 1)
942 #define	IPL_LOGALL	-1
943 #define	IPL_LOGNONE	-2
944 
945 /*
946  * For SIOCGETFS
947  */
948 typedef	struct	friostat	{
949 	struct	filterstats	f_st[2];
950 	struct	frentry		*f_ipf[2][2];
951 	struct	frentry		*f_acct[2][2];
952 	struct	frentry		*f_ipf6[2][2];
953 	struct	frentry		*f_acct6[2][2];
954 	struct	frentry		*f_auth;
955 	struct	frgroup		*f_groups[IPL_LOGSIZE][2];
956 	u_long	f_froute[2];
957 	u_long	f_ticks;
958 	int	f_locks[IPL_LOGMAX];
959 	size_t	f_kmutex_sz;
960 	size_t	f_krwlock_sz;
961 	int	f_defpass;	/* default pass - from fr_pass */
962 	int	f_active;	/* 1 or 0 - active rule set */
963 	int	f_running;	/* 1 if running, else 0 */
964 	int	f_logging;	/* 1 if enabled, else 0 */
965 	int	f_features;
966 	char	f_version[32];	/* version string */
967 } friostat_t;
968 
969 #define	f_fin		f_ipf[0]
970 #define	f_fin6		f_ipf6[0]
971 #define	f_fout		f_ipf[1]
972 #define	f_fout6		f_ipf6[1]
973 #define	f_acctin	f_acct[0]
974 #define	f_acctin6	f_acct6[0]
975 #define	f_acctout	f_acct[1]
976 #define	f_acctout6	f_acct6[1]
977 
978 #define	IPF_FEAT_LKM		0x001
979 #define	IPF_FEAT_LOG		0x002
980 #define	IPF_FEAT_LOOKUP		0x004
981 #define	IPF_FEAT_BPF		0x008
982 #define	IPF_FEAT_COMPILED	0x010
983 #define	IPF_FEAT_CKSUM		0x020
984 #define	IPF_FEAT_SYNC		0x040
985 #define	IPF_FEAT_SCAN		0x080
986 #define	IPF_FEAT_IPV6		0x100
987 
988 typedef struct	optlist {
989 	u_short ol_val;
990 	int	ol_bit;
991 } optlist_t;
992 
993 
994 /*
995  * Group list structure.
996  */
997 typedef	struct frgroup {
998 	struct	frgroup	*fg_next;
999 	struct	frentry	*fg_head;
1000 	struct	frentry	*fg_start;
1001 	u_32_t	fg_flags;
1002 	int	fg_ref;
1003 	char	fg_name[FR_GROUPLEN];
1004 } frgroup_t;
1005 
1006 #define	FG_NAME(g)	(*(g)->fg_name == '\0' ? "" : (g)->fg_name)
1007 
1008 
1009 /*
1010  * Used by state and NAT tables
1011  */
1012 typedef struct icmpinfo {
1013 	u_short	ici_id;
1014 	u_short	ici_seq;
1015 	u_char	ici_type;
1016 } icmpinfo_t;
1017 
1018 typedef struct udpinfo {
1019 	u_short	us_sport;
1020 	u_short	us_dport;
1021 } udpinfo_t;
1022 
1023 
1024 typedef	struct	tcpdata	{
1025 	u_32_t	td_end;
1026 	u_32_t	td_maxend;
1027 	u_32_t	td_maxwin;
1028 	u_32_t	td_winscale;
1029 	u_32_t	td_maxseg;
1030 	int	td_winflags;
1031 } tcpdata_t;
1032 
1033 #define	TCP_WSCALE_MAX		14
1034 
1035 #define	TCP_WSCALE_SEEN		0x00000001
1036 #define	TCP_WSCALE_FIRST	0x00000002
1037 #define TCP_SACK_PERMIT		0x00000004
1038 
1039 
1040 typedef	struct tcpinfo {
1041 	u_short	ts_sport;
1042 	u_short	ts_dport;
1043 	tcpdata_t ts_data[2];
1044 } tcpinfo_t;
1045 
1046 
1047 /*
1048  * Structures to define a GRE header as seen in a packet.
1049  */
1050 struct	grebits	{
1051 	u_32_t	grb_C:1;
1052 	u_32_t	grb_R:1;
1053 	u_32_t	grb_K:1;
1054 	u_32_t	grb_S:1;
1055 	u_32_t	grb_s:1;
1056 	u_32_t	grb_recur:1;
1057 	u_32_t	grb_A:1;
1058 	u_32_t	grb_flags:3;
1059 	u_32_t	grb_ver:3;
1060 	u_short	grb_ptype;
1061 };
1062 
1063 typedef	struct	grehdr	{
1064 	union	{
1065 		struct	grebits	gru_bits;
1066 		u_short	gru_flags;
1067 	} gr_un;
1068 	u_short	gr_len;
1069 	u_short	gr_call;
1070 } grehdr_t;
1071 
1072 #define	gr_flags	gr_un.gru_flags
1073 #define	gr_bits		gr_un.gru_bits
1074 #define	gr_ptype	gr_bits.grb_ptype
1075 #define	gr_C		gr_bits.grb_C
1076 #define	gr_R		gr_bits.grb_R
1077 #define	gr_K		gr_bits.grb_K
1078 #define	gr_S		gr_bits.grb_S
1079 #define	gr_s		gr_bits.grb_s
1080 #define	gr_recur	gr_bits.grb_recur
1081 #define	gr_A		gr_bits.grb_A
1082 #define	gr_ver		gr_bits.grb_ver
1083 
1084 /*
1085  * GRE information tracked by "keep state"
1086  */
1087 typedef	struct	greinfo	{
1088 	u_short	gs_call[2];
1089 	u_short	gs_flags;
1090 	u_short	gs_ptype;
1091 } greinfo_t;
1092 
1093 #define	GRE_REV(x)	((ntohs(x) >> 13) & 7)
1094 
1095 
1096 /*
1097  * Format of an Authentication header
1098  */
1099 typedef	struct	authhdr	{
1100 	u_char	ah_next;
1101 	u_char	ah_plen;
1102 	u_short	ah_reserved;
1103 	u_32_t	ah_spi;
1104 	u_32_t	ah_seq;
1105 	/* Following the sequence number field is 0 or more bytes of */
1106 	/* authentication data, as specified by ah_plen - RFC 2402.  */
1107 } authhdr_t;
1108 
1109 
1110 /*
1111  * Timeout tail queue list member
1112  */
1113 typedef	struct	ipftqent	{
1114 	struct ipftqent **tqe_pnext;
1115 	struct ipftqent *tqe_next;
1116 	struct	ipftq	*tqe_ifq;
1117 	void	*tqe_parent;		/* pointer back to NAT/state struct */
1118 	u_long	tqe_die;		/* when this entriy is to die */
1119 	u_long	tqe_touched;
1120 	int	tqe_flags;
1121 	int	tqe_state[2];		/* current state of this entry */
1122 } ipftqent_t;
1123 
1124 #define	TQE_RULEBASED	0x00000001
1125 
1126 
1127 /*
1128  * Timeout tail queue head for IPFilter
1129  */
1130 typedef struct  ipftq   {
1131 	ipfmutex_t	ifq_lock;
1132 	u_int	ifq_ttl;
1133 	ipftqent_t	*ifq_head;
1134 	ipftqent_t	**ifq_tail;
1135 	struct	ipftq	*ifq_next;
1136 	struct	ipftq	**ifq_pnext;
1137 	int	ifq_ref;
1138 	u_int	ifq_flags;
1139 } ipftq_t;
1140 
1141 #define	IFQF_USER	0x01		/* User defined aging */
1142 #define	IFQF_DELETE	0x02		/* Marked for deletion */
1143 #define	IFQF_PROXY	0x04		/* Timeout queue in use by a proxy */
1144 
1145 #define	IPF_HZ_MULT	1
1146 #define	IPF_HZ_DIVIDE	2		/* How many times a second ipfilter */
1147 					/* checks its timeout queues.       */
1148 #define	IPF_TTLVAL(x)	(((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE)
1149 
1150 /*
1151  * Structure to define address for pool lookups.
1152  */
1153 typedef	struct	{
1154 	u_char		adf_len;
1155 	sa_family_t	adf_family;
1156 	i6addr_t	adf_addr;
1157 } addrfamily_t;
1158 
1159 
1160 /*
1161  * Object structure description.  For passing through in ioctls.
1162  */
1163 typedef	struct	ipfobj	{
1164 	u_32_t	ipfo_rev;		/* IPFilter version number */
1165 	u_32_t	ipfo_size;		/* size of object at ipfo_ptr */
1166 	void	*ipfo_ptr;		/* pointer to object */
1167 	int	ipfo_type;		/* type of object being pointed to */
1168 	int	ipfo_offset;		/* bytes from ipfo_ptr where to start */
1169 	u_char	ipfo_xxxpad[32];	/* reserved for future use */
1170 } ipfobj_t;
1171 
1172 /*
1173  * ioctl struct for setting what zone further ioctls will act on. ipfz_gz is a
1174  * boolean: set it to 1 to operate on the GZ-controlled stack.
1175  */
1176 typedef	struct	ipfzoneobj	{
1177 	u_32_t		ipfz_gz;			/* GZ stack boolean */
1178 	char		ipfz_zonename[ZONENAME_MAX];	/* zone to act on */
1179 } ipfzoneobj_t;
1180 
1181 #if defined(_KERNEL)
1182 /* Set ipfs_zoneid to this if no zone has been set: */
1183 #define IPFS_ZONE_UNSET	-2
1184 
1185 typedef	struct	ipf_devstate	{
1186 	zoneid_t	ipfs_zoneid;
1187 	minor_t		ipfs_minor;
1188 	boolean_t	ipfs_gz;
1189 } ipf_devstate_t;
1190 #endif
1191 
1192 #define	IPFOBJ_FRENTRY		0	/* struct frentry */
1193 #define	IPFOBJ_IPFSTAT		1	/* struct friostat */
1194 #define	IPFOBJ_IPFINFO		2	/* struct fr_info */
1195 #define	IPFOBJ_AUTHSTAT		3	/* struct fr_authstat */
1196 #define	IPFOBJ_FRAGSTAT		4	/* struct ipfrstat */
1197 #define	IPFOBJ_IPNAT		5	/* struct ipnat */
1198 #define	IPFOBJ_NATSTAT		6	/* struct natstat */
1199 #define	IPFOBJ_STATESAVE	7	/* struct ipstate_save */
1200 #define	IPFOBJ_NATSAVE		8	/* struct nat_save */
1201 #define	IPFOBJ_NATLOOKUP	9	/* struct natlookup */
1202 #define	IPFOBJ_IPSTATE		10	/* struct ipstate */
1203 #define	IPFOBJ_STATESTAT	11	/* struct ips_stat */
1204 #define	IPFOBJ_FRAUTH		12	/* struct frauth */
1205 #define	IPFOBJ_TUNEABLE		13	/* struct ipftune */
1206 #define	IPFOBJ_NAT		14	/* struct nat */
1207 #define	IPFOBJ_IPFITER		15	/* struct ipfruleiter */
1208 #define	IPFOBJ_GENITER		16	/* struct ipfgeniter */
1209 #define	IPFOBJ_GTABLE		17	/* struct ipftable */
1210 #define	IPFOBJ_LOOKUPITER	18	/* struct ipflookupiter */
1211 #define	IPFOBJ_COUNT		19	/* How many #defines are above this? */
1212 
1213 
1214 typedef	union	ipftunevalptr	{
1215 	void	*ipftp_void;
1216 	u_long	*ipftp_long;
1217 	u_int	*ipftp_int;
1218 	u_short	*ipftp_short;
1219 	u_char	*ipftp_char;
1220 } ipftunevalptr_t;
1221 
1222 typedef	struct	ipftuneable	{
1223 	ipftunevalptr_t	ipft_una;
1224 	char		*ipft_name;
1225 	u_long		ipft_min;
1226 	u_long		ipft_max;
1227 	int		ipft_sz;
1228 	int		ipft_flags;
1229 	struct ipftuneable *ipft_next;
1230 } ipftuneable_t;
1231 
1232 #define	ipft_addr	ipft_una.ipftp_void
1233 #define	ipft_plong	ipft_una.ipftp_long
1234 #define	ipft_pint	ipft_una.ipftp_int
1235 #define	ipft_pshort	ipft_una.ipftp_short
1236 #define	ipft_pchar	ipft_una.ipftp_char
1237 
1238 #define	IPFT_RDONLY	1	/* read-only */
1239 #define	IPFT_WRDISABLED	2	/* write when disabled only */
1240 
1241 typedef	union	ipftuneval	{
1242 	u_long	ipftu_long;
1243 	u_int	ipftu_int;
1244 	u_short	ipftu_short;
1245 	u_char	ipftu_char;
1246 } ipftuneval_t;
1247 
1248 typedef	struct	ipftune	{
1249 	void    	*ipft_cookie;
1250 	ipftuneval_t	ipft_un;
1251 	u_long  	ipft_min;
1252 	u_long  	ipft_max;
1253 	int		ipft_sz;
1254 	int		ipft_flags;
1255 	char		ipft_name[80];
1256 } ipftune_t;
1257 
1258 #define	ipft_vlong	ipft_un.ipftu_long
1259 #define	ipft_vint	ipft_un.ipftu_int
1260 #define	ipft_vshort	ipft_un.ipftu_short
1261 #define	ipft_vchar	ipft_un.ipftu_char
1262 
1263 /*
1264  * ipfruleiter is iterator structure used for filter rules.
1265  */
1266 typedef	struct	ipfruleiter {
1267 	int		iri_ver;
1268 	int		iri_inout;
1269 	char		iri_group[FR_GROUPLEN];
1270 	int		iri_active;
1271 	int		iri_nrules;
1272 	frentry_t	*iri_rule;
1273 } ipfruleiter_t;
1274 
1275 /* Values for iri_inout  */
1276 #define	F_IN	0
1277 #define	F_OUT	1
1278 #define	F_ACIN	2
1279 #define	F_ACOUT	3
1280 
1281 /*
1282  * ipfgeniter is generic iterator structure used for nat rules,
1283  * hostmap entries and nat table entries.
1284  */
1285 typedef	struct	ipfgeniter {
1286 	int	igi_type;	/* type of data we're looking at */
1287 	int	igi_nitems;
1288 	void	*igi_data;
1289 } ipfgeniter_t;
1290 
1291 #define	IPFGENITER_IPF		0
1292 #define	IPFGENITER_NAT		1
1293 #define	IPFGENITER_IPNAT	2
1294 #define	IPFGENITER_FRAG		3
1295 #define	IPFGENITER_AUTH		4
1296 #define	IPFGENITER_STATE	5
1297 #define	IPFGENITER_NATFRAG	6
1298 #define	IPFGENITER_HOSTMAP	7
1299 #define	IPFGENITER_LOOKUP	8
1300 
1301 typedef struct  ipftable {
1302         int     ita_type;
1303         void    *ita_table;
1304 } ipftable_t;
1305 
1306 typedef struct ipftoken {
1307         struct ipftoken *ipt_next;
1308         struct ipftoken **ipt_pnext;
1309         void            *ipt_ctx;
1310         void            *ipt_data;
1311         u_long          ipt_die;
1312         int             ipt_type;
1313         int             ipt_uid;
1314         int             ipt_subtype;
1315         int             ipt_alive;
1316 } ipftoken_t;
1317 
1318 
1319 /*
1320  * sync commands
1321  */
1322 #define	IPFSYNC_RESYNC	0
1323 #define	IPFSYNC_NEWIFP	1
1324 #define	IPFSYNC_OLDIFP	2
1325 
1326 
1327 /*
1328 ** HPUX Port
1329 */
1330 #ifdef __hpux
1331 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */
1332 # define	IPF_SMAJ	0	/* temp assignment XXX, not critical */
1333 #endif
1334 
1335 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
1336     (__FreeBSD_version >= 220000)
1337 # define	CDEV_MAJOR	79
1338 #endif
1339 
1340 /*
1341  * Post NetBSD 1.2 has the PFIL interface for packet filters.  This turns
1342  * on those hooks.  We don't need any special mods in non-IP Filter code
1343  * with this!
1344  */
1345 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
1346     (defined(NetBSD1_2) && NetBSD1_2 > 1) || \
1347     (defined(__FreeBSD__) && (__FreeBSD_version >= 500043))
1348 # if (NetBSD >= 199905)
1349 #  define PFIL_HOOKS
1350 # endif
1351 # ifdef PFIL_HOOKS
1352 #  define NETBSD_PF
1353 # endif
1354 #endif
1355 
1356 #ifndef	_KERNEL
1357 extern	int	fr_check __P((struct ip *, int, void *, int, mb_t **, ipf_stack_t *));
1358 extern	int	(*fr_checkp) __P((ip_t *, int, void *, int, mb_t **, ipf_stack_t *));
1359 extern	int	ipf_log __P((void));
1360 extern	struct	ifnet *get_unit __P((char *, int, ipf_stack_t *));
1361 extern	char	*get_ifname __P((struct ifnet *));
1362 # if defined(__NetBSD__) || defined(__OpenBSD__) || \
1363 	  (_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000)
1364 extern	int	frrequest __P((int, u_long, caddr_t, int, int, ipf_stack_t *));
1365 # else
1366 extern	int	iplioctl __P((int, ioctlcmd_t, caddr_t, int));
1367 # endif
1368 extern	int	iplopen __P((dev_t, int));
1369 extern	int	iplclose __P((dev_t, int));
1370 extern	void	m_freem __P((mb_t *));
1371 #else /* #ifndef _KERNEL */
1372 extern	phy_if_t	get_unit __P((char *, int, ipf_stack_t *));
1373 # if defined(__NetBSD__) && defined(PFIL_HOOKS)
1374 extern	void	ipfilterattach __P((int));
1375 # endif
1376 extern	int	ipl_enable __P((void));
1377 extern	int	ipl_disable __P((void));
1378 # ifdef MENTAT
1379 extern	int	fr_check __P((struct ip *, int, void *, int, void *,
1380 			      mblk_t **, ipf_stack_t *));
1381 #  if SOLARIS
1382 #   if SOLARIS2 >= 7
1383 extern	int	iplioctl __P((dev_t, int, intptr_t, int, cred_t *, int *));
1384 #   else
1385 extern	int	iplioctl __P((dev_t, int, int *, int, cred_t *, int *));
1386 #   endif
1387 #   if SOLARIS2 >= 10 && defined(_KERNEL)
1388 extern	int	fr_make_rst __P((fr_info_t *));
1389 extern	int	fr_make_icmp __P((fr_info_t *));
1390 extern	void	fr_calc_chksum __P((fr_info_t *, mb_t *));
1391 extern	ipf_stack_t *ipf_find_stack(const zoneid_t, ipf_devstate_t *);
1392 #   endif
1393 extern	int	iplopen __P((dev_t *, int, int, cred_t *));
1394 extern	int	iplclose __P((dev_t, int, int, cred_t *));
1395 extern	int	iplread __P((dev_t, uio_t *, cred_t *));
1396 extern	int	iplwrite __P((dev_t, uio_t *, cred_t *));
1397 #  endif
1398 #  ifdef __hpux
1399 extern	int	iplopen __P((dev_t, int, intptr_t, int));
1400 extern	int	iplclose __P((dev_t, int, int));
1401 extern	int	iplioctl __P((dev_t, int, caddr_t, int));
1402 extern	int	iplread __P((dev_t, uio_t *));
1403 extern	int	iplwrite __P((dev_t, uio_t *));
1404 extern	int	iplselect __P((dev_t, int));
1405 #  endif
1406 extern	int	ipfsync __P((ipf_stack_t *));
1407 extern	int	fr_qout __P((queue_t *, mblk_t *));
1408 # else /* MENTAT */
1409 extern	int	fr_check __P((struct ip *, int, void *, int, mb_t **, ipf_stack_t *));
1410 extern	int	(*fr_checkp) __P((ip_t *, int, void *, int, mb_t **, ipf_stack_t *));
1411 extern	size_t	mbufchainlen __P((mb_t *));
1412 #  ifdef	__sgi
1413 #   include <sys/cred.h>
1414 extern	int	iplioctl __P((dev_t, int, caddr_t, int, cred_t *, int *));
1415 extern	int	iplopen __P((dev_t *, int, int, cred_t *));
1416 extern	int	iplclose __P((dev_t, int, int, cred_t *));
1417 extern	int	iplread __P((dev_t, uio_t *, cred_t *));
1418 extern	int	iplwrite __P((dev_t, uio_t *, cred_t *));
1419 extern	int	ipfsync __P((ipf_stack_t *));
1420 extern	int	ipfilter_sgi_attach __P((void));
1421 extern	void	ipfilter_sgi_detach __P((void));
1422 extern	void	ipfilter_sgi_intfsync __P((void));
1423 #  else
1424 #   ifdef	IPFILTER_LKM
1425 extern	int	iplidentify __P((char *));
1426 #   endif
1427 #   if (_BSDI_VERSION >= 199510) || (__FreeBSD_version >= 220000) || \
1428       (NetBSD >= 199511) || defined(__OpenBSD__)
1429 #    if defined(__NetBSD__) || (_BSDI_VERSION >= 199701) || \
1430        defined(__OpenBSD__) || (__FreeBSD_version >= 300000)
1431 #     if (__FreeBSD_version >= 500024)
1432 #      if (__FreeBSD_version >= 502116)
1433 extern	int	iplioctl __P((struct cdev*, u_long, caddr_t, int, struct thread *));
1434 #      else
1435 extern	int	iplioctl __P((dev_t, u_long, caddr_t, int, struct thread *));
1436 #      endif /* __FreeBSD_version >= 502116 */
1437 #     else
1438 extern	int	iplioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
1439 #     endif /* __FreeBSD_version >= 500024 */
1440 #    else
1441 extern	int	iplioctl __P((dev_t, int, caddr_t, int, struct proc *));
1442 #    endif
1443 #    if (__FreeBSD_version >= 500024)
1444 #      if (__FreeBSD_version >= 502116)
1445 extern	int	iplopen __P((struct cdev*, int, int, struct thread *));
1446 extern	int	iplclose __P((struct cdev*, int, int, struct thread *));
1447 #      else
1448 extern	int	iplopen __P((dev_t, int, int, struct thread *));
1449 extern	int	iplclose __P((dev_t, int, int, struct thread *));
1450 #      endif /* __FreeBSD_version >= 502116 */
1451 #    else
1452 extern	int	iplopen __P((dev_t, int, int, struct proc *));
1453 extern	int	iplclose __P((dev_t, int, int, struct proc *));
1454 #    endif /* __FreeBSD_version >= 500024 */
1455 #   else
1456 #    ifdef linux
1457 extern	int	iplioctl __P((struct inode *, struct file *, u_int, u_long));
1458 #    else
1459 extern	int	iplopen __P((dev_t, int));
1460 extern	int	iplclose __P((dev_t, int));
1461 extern	int	iplioctl __P((dev_t, int, caddr_t, int));
1462 #    endif
1463 #   endif /* (_BSDI_VERSION >= 199510) */
1464 #   if	BSD >= 199306
1465 #      if (__FreeBSD_version >= 502116)
1466 extern	int	iplread __P((struct cdev*, struct uio *, int));
1467 extern	int	iplwrite __P((struct cdev*, struct uio *, int));
1468 #      else
1469 extern	int	iplread __P((dev_t, struct uio *, int));
1470 extern	int	iplwrite __P((dev_t, struct uio *, int));
1471 #      endif /* __FreeBSD_version >= 502116 */
1472 #   else
1473 #    ifndef linux
1474 extern	int	iplread __P((dev_t, struct uio *));
1475 extern	int	iplwrite __P((dev_t, struct uio *));
1476 #    endif
1477 #   endif /* BSD >= 199306 */
1478 #  endif /* __ sgi */
1479 # endif /* MENTAT */
1480 
1481 #endif /* #ifndef _KERNEL */
1482 
1483 extern	char	*memstr __P((char *, char *, int, int));
1484 extern	int	count4bits __P((u_32_t));
1485 extern	int	count6bits __P((u_32_t *));
1486 extern	int	frrequest __P((int, ioctlcmd_t, caddr_t, int, int, ipf_stack_t *));
1487 extern	char	*getifname __P((struct ifnet *));
1488 extern	int	iplattach __P((ipf_stack_t *));
1489 extern	int	ipldetach __P((ipf_stack_t *));
1490 extern	u_short	ipf_cksum __P((u_short *, int));
1491 extern	int	copyinptr __P((void *, void *, size_t));
1492 extern	int	copyoutptr __P((void *, void *, size_t));
1493 extern	int	fr_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *));
1494 extern	int	fr_inobj __P((void *, void *, int));
1495 extern	int	fr_inobjsz __P((void *, void *, int, int));
1496 extern	int	fr_ioctlswitch __P((int, void *, ioctlcmd_t, int, int, void *,
1497 				    ipf_stack_t *));
1498 extern	int	fr_ipftune __P((ioctlcmd_t, void *, ipf_stack_t *));
1499 extern	int	fr_outobj __P((void *, void *, int));
1500 extern	int	fr_outobjsz __P((void *, void *, int, int));
1501 extern	void	*fr_pullup __P((mb_t *, fr_info_t *, int));
1502 extern	void	fr_resolvedest __P((struct frdest *, int, ipf_stack_t *));
1503 extern	int	fr_resolvefunc __P((void *));
1504 extern	void	*fr_resolvenic __P((char *, int, ipf_stack_t *));
1505 extern	int	fr_send_icmp_err __P((int, fr_info_t *, int));
1506 extern	int	fr_send_reset __P((fr_info_t *));
1507 #if  (__FreeBSD_version < 490000) || !defined(_KERNEL)
1508 extern	int	ppsratecheck __P((struct timeval *, int *, int));
1509 #endif
1510 extern	ipftq_t	*fr_addtimeoutqueue __P((ipftq_t **, u_int, ipf_stack_t *));
1511 extern	void	fr_deletequeueentry __P((ipftqent_t *));
1512 extern	int	fr_deletetimeoutqueue __P((ipftq_t *));
1513 extern	void	fr_freetimeoutqueue __P((ipftq_t *, ipf_stack_t *));
1514 extern	void	fr_movequeue __P((ipftqent_t *, ipftq_t *, ipftq_t *,
1515 				  ipf_stack_t *));
1516 extern	void	fr_queueappend __P((ipftqent_t *, ipftq_t *, void *,
1517 				    ipf_stack_t *));
1518 extern	void	fr_queueback __P((ipftqent_t *, ipf_stack_t *));
1519 extern	void	fr_queuefront __P((ipftqent_t *));
1520 extern	void	fr_checkv4sum __P((fr_info_t *));
1521 extern	int	fr_checkl4sum __P((fr_info_t *));
1522 extern	int	fr_ifpfillv4addr __P((int, struct sockaddr_in *,
1523 				      struct sockaddr_in *, struct in_addr *,
1524 				      struct in_addr *));
1525 extern	int	fr_coalesce __P((fr_info_t *));
1526 #ifdef	USE_INET6
1527 extern	void	fr_checkv6sum __P((fr_info_t *));
1528 extern	int	fr_ifpfillv6addr __P((int, struct sockaddr_in6 *,
1529 				      struct sockaddr_in6 *, struct in_addr *,
1530 				      struct in_addr *));
1531 #endif
1532 
1533 #define	IPFILTER_COMPAT
1534 extern	int	fr_incomptrans __P((ipfobj_t *, void *));
1535 extern	int	fr_outcomptrans __P((ipfobj_t *, void *));
1536 
1537 extern	int		fr_addipftune __P((ipftuneable_t *, ipf_stack_t *));
1538 extern	int		fr_delipftune __P((ipftuneable_t *, ipf_stack_t *));
1539 
1540 extern	int	frflush __P((minor_t, int, int, ipf_stack_t *));
1541 extern	void	frsync __P((int, int, void *, char *, ipf_stack_t *));
1542 #if SOLARIS2 >= 10
1543 extern	void	fr_ifindexsync __P((void *, void *, ipf_stack_t *));
1544 #endif
1545 extern	frgroup_t *fr_addgroup __P((char *, void *, u_32_t, minor_t, int,
1546 				    ipf_stack_t *));
1547 extern	int	fr_derefrule __P((frentry_t **, ipf_stack_t *));
1548 extern	void	fr_delgroup __P((char *, minor_t, int, ipf_stack_t *));
1549 extern	frgroup_t *fr_findgroup __P((char *, minor_t, int, frgroup_t ***,
1550 				     ipf_stack_t *));
1551 
1552 extern	int	fr_loginit __P((ipf_stack_t *));
1553 extern	int	ipflog_clear __P((minor_t, ipf_stack_t *));
1554 extern	int	ipflog_read __P((minor_t, struct uio *, ipf_stack_t *));
1555 extern	int	ipflog __P((fr_info_t *, u_int));
1556 extern	int	ipllog __P((int, fr_info_t *, void **, size_t *, int *, int,
1557 			    ipf_stack_t *));
1558 extern	void	fr_logunload __P((ipf_stack_t *));
1559 
1560 extern	frentry_t	*fr_acctpkt __P((fr_info_t *, u_32_t *));
1561 extern	int		fr_copytolog __P((int, char *, int));
1562 extern	u_short		fr_cksum __P((mb_t *, ip_t *, int, void *));
1563 extern	void		fr_deinitialise __P((ipf_stack_t *));
1564 extern	frentry_t 	*fr_dolog __P((fr_info_t *, u_32_t *));
1565 extern	frentry_t 	*fr_dstgrpmap __P((fr_info_t *, u_32_t *));
1566 extern	void		fr_fixskip __P((frentry_t **, frentry_t *, int));
1567 extern	void		fr_forgetifp __P((void *, ipf_stack_t *));
1568 extern	frentry_t 	*fr_getrulen __P((int, char *, u_32_t,
1569 					  ipf_stack_t *));
1570 extern	void		fr_getstat __P((struct friostat *, ipf_stack_t *));
1571 extern	int		fr_ifpaddr __P((int, int, void *,
1572 					struct in_addr *, struct in_addr *,
1573 					ipf_stack_t *));
1574 extern	int		fr_initialise __P((ipf_stack_t *));
1575 extern	int		fr_lock __P((caddr_t, int *));
1576 extern	int		fr_makefrip __P((int, ip_t *, fr_info_t *));
1577 extern	int		fr_matchtag __P((ipftag_t *, ipftag_t *));
1578 extern	int		fr_matchicmpqueryreply __P((int, icmpinfo_t *,
1579 						    struct icmp *, int));
1580 extern	u_32_t		fr_newisn __P((fr_info_t *));
1581 extern	u_short		fr_nextipid __P((fr_info_t *));
1582 extern	int		fr_rulen __P((int, frentry_t *, ipf_stack_t *));
1583 extern	int		fr_scanlist __P((fr_info_t *, u_32_t));
1584 extern	frentry_t 	*fr_srcgrpmap __P((fr_info_t *, u_32_t *));
1585 extern	int		fr_tcpudpchk __P((fr_info_t *, frtuc_t *));
1586 extern	int		fr_verifysrc __P((fr_info_t *fin));
1587 extern	int		fr_zerostats __P((char *, ipf_stack_t *));
1588 extern	ipftoken_t	*ipf_findtoken __P((int, int, void *, ipf_stack_t *));
1589 extern	int		ipf_getnextrule __P((ipftoken_t *, void *,
1590 					     ipf_stack_t *));
1591 extern  void            ipf_expiretokens __P((ipf_stack_t *));
1592 extern  void            ipf_freetoken __P((ipftoken_t *, ipf_stack_t *));
1593 extern  int             ipf_deltoken __P((int, int, void *, ipf_stack_t *));
1594 extern  int             ipf_genericiter __P((void *, int, void *, ipf_stack_t *));
1595 extern	int		ipf_extraflush __P((int, ipftq_t *, ipftq_t *, ipf_stack_t *));
1596 extern	int		ipf_flushclosing __P((int, int, ipftq_t *, ipftq_t *, ipf_stack_t *));
1597 extern	int		ipf_earlydrop __P((int, ipftq_t *, int, ipf_stack_t *));
1598 
1599 #ifndef	ipf_random
1600 extern	u_32_t		ipf_random __P((void));
1601 #endif
1602 
1603 #if defined(_KERNEL)
1604 extern	int	fr_setzoneid __P((ipf_devstate_t *, void *));
1605 #endif
1606 
1607 extern	char	ipfilter_version[];
1608 #ifdef	USE_INET6
1609 extern	int	icmptoicmp6types[ICMP_MAXTYPE+1];
1610 extern	int	icmptoicmp6unreach[ICMP_MAX_UNREACH];
1611 extern	int	icmpreplytype6[ICMP6_MAXTYPE + 1];
1612 #endif
1613 extern	int	icmpreplytype4[ICMP_MAXTYPE + 1];
1614 extern	frentry_t *ipfrule_match __P((fr_info_t *));
1615 
1616 extern void	ipftuneable_alloc(ipf_stack_t *);
1617 extern void	ipftuneable_free(ipf_stack_t *);
1618 
1619 #endif	/* __IP_FIL_H__ */
1620