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 2019, Joyent, Inc.
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 #include <sys/uuid.h>
20
21 #ifdef SOLARIS
22 #undef SOLARIS
23 #endif
24 #if (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
25 #define SOLARIS (1)
26 #else
27 #define SOLARIS (0)
28 #endif
29
30 #ifndef __P
31 # ifdef __STDC__
32 # define __P(x) x
33 # else
34 # define __P(x) ()
35 # endif
36 #endif
37
38 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51)
39 # define SIOCADAFR _IOW('r', 60, struct ipfobj)
40 # define SIOCRMAFR _IOW('r', 61, struct ipfobj)
41 # define SIOCSETFF _IOW('r', 62, u_int)
42 # define SIOCGETFF _IOR('r', 63, u_int)
43 # define SIOCGETFS _IOWR('r', 64, struct ipfobj)
44 # define SIOCIPFFL _IOWR('r', 65, int)
45 # define SIOCIPFFB _IOR('r', 66, int)
46 # define SIOCADIFR _IOW('r', 67, struct ipfobj)
47 # define SIOCRMIFR _IOW('r', 68, struct ipfobj)
48 # define SIOCSWAPA _IOR('r', 69, u_int)
49 # define SIOCINAFR _IOW('r', 70, struct ipfobj)
50 # define SIOCINIFR _IOW('r', 71, struct ipfobj)
51 # define SIOCFRENB _IOW('r', 72, u_int)
52 # define SIOCFRSYN _IOW('r', 73, u_int)
53 # define SIOCFRZST _IOWR('r', 74, struct ipfobj)
54 # define SIOCZRLST _IOWR('r', 75, struct ipfobj)
55 # define SIOCAUTHW _IOWR('r', 76, struct ipfobj)
56 # define SIOCAUTHR _IOWR('r', 77, struct ipfobj)
57 # define SIOCATHST _IOWR('r', 78, struct ipfobj)
58 # define SIOCSTLCK _IOWR('r', 79, u_int)
59 # define SIOCSTPUT _IOWR('r', 80, struct ipfobj)
60 # define SIOCSTGET _IOWR('r', 81, struct ipfobj)
61 # define SIOCSTGSZ _IOWR('r', 82, struct ipfobj)
62 # define SIOCGFRST _IOWR('r', 83, struct ipfobj)
63 # define SIOCSETLG _IOWR('r', 84, int)
64 # define SIOCGETLG _IOWR('r', 85, int)
65 # define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve)
66 # define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj)
67 # define SIOCIPFGET _IOWR('r', 88, struct ipfobj)
68 # define SIOCIPFSET _IOWR('r', 89, struct ipfobj)
69 # define SIOCIPFL6 _IOWR('r', 90, int)
70 # define SIOCIPFLP _IOWR('r', 91, int)
71 # define SIOCIPFITER _IOWR('r', 92, struct ipfobj)
72 # define SIOCGENITER _IOWR('r', 93, struct ipfobj)
73 # define SIOCGTABL _IOWR('r', 94, struct ipfobj)
74 # define SIOCIPFDELTOK _IOWR('r', 95, int)
75 # define SIOCLOOKUPITER _IOWR('r', 96, struct ipfobj)
76 #else
77 # define SIOCADAFR _IOW(r, 60, struct ipfobj)
78 # define SIOCRMAFR _IOW(r, 61, struct ipfobj)
79 # define SIOCSETFF _IOW(r, 62, u_int)
80 # define SIOCGETFF _IOR(r, 63, u_int)
81 # define SIOCGETFS _IOWR(r, 64, struct ipfobj)
82 # define SIOCIPFFL _IOWR(r, 65, int)
83 # define SIOCIPFFB _IOR(r, 66, int)
84 # define SIOCADIFR _IOW(r, 67, struct ipfobj)
85 # define SIOCRMIFR _IOW(r, 68, struct ipfobj)
86 # define SIOCSWAPA _IOR(r, 69, u_int)
87 # define SIOCINAFR _IOW(r, 70, struct ipfobj)
88 # define SIOCINIFR _IOW(r, 71, struct ipfobj)
89 # define SIOCFRENB _IOW(r, 72, u_int)
90 # define SIOCFRSYN _IOW(r, 73, u_int)
91 # define SIOCFRZST _IOWR(r, 74, struct ipfobj)
92 # define SIOCZRLST _IOWR(r, 75, struct ipfobj)
93 # define SIOCAUTHW _IOWR(r, 76, struct ipfobj)
94 # define SIOCAUTHR _IOWR(r, 77, struct ipfobj)
95 # define SIOCATHST _IOWR(r, 78, struct ipfobj)
96 # define SIOCSTLCK _IOWR(r, 79, u_int)
97 # define SIOCSTPUT _IOWR(r, 80, struct ipfobj)
98 # define SIOCSTGET _IOWR(r, 81, struct ipfobj)
99 # define SIOCSTGSZ _IOWR(r, 82, struct ipfobj)
100 # define SIOCGFRST _IOWR(r, 83, struct ipfobj)
101 # define SIOCSETLG _IOWR(r, 84, int)
102 # define SIOCGETLG _IOWR(r, 85, int)
103 # define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve)
104 # define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj)
105 # define SIOCIPFGET _IOWR(r, 88, struct ipfobj)
106 # define SIOCIPFSET _IOWR(r, 89, struct ipfobj)
107 # define SIOCIPFL6 _IOWR(r, 90, int)
108 # define SIOCIPFLP _IOWR(r, 91, int)
109 # define SIOCIPFITER _IOWR(r, 92, struct ipfobj)
110 # define SIOCGENITER _IOWR(r, 93, struct ipfobj)
111 # define SIOCGTABL _IOWR(r, 94, struct ipfobj)
112 # define SIOCIPFDELTOK _IOWR(r, 95, int)
113 # define SIOCLOOKUPITER _IOWR(r, 96, struct ipfobj)
114 #endif
115 #define SIOCADDFR SIOCADAFR
116 #define SIOCDELFR SIOCRMAFR
117 #define SIOCINSFR SIOCINAFR
118 # define SIOCIPFZONESET _IOWR('r', 97, struct ipfzoneobj)
119 # define SIOCIPFCFWCFG _IOWR('r', 98, struct ipfcfwcfg)
120
121 /*
122 * What type of table is getting flushed?
123 */
124
125 #define NAT_FLUSH 1
126 #define STATE_FLUSH 2
127
128 /*
129 * What table flush options are available?
130 */
131
132 #define FLUSH_LIST 0
133 #define FLUSH_TABLE_ALL 1 /* Flush entire table */
134 #define FLUSH_TABLE_CLOSING 2 /* Flush "closing" entries" */
135 #define FLUSH_TABLE_EXTRA 3 /* Targetted flush: almost closed, long idle */
136
137 #define VALID_TABLE_FLUSH_OPT(x) ((x) >= 1 && (x) <= 3)
138
139 /*
140 * Define the default hi and lo watermarks used when flushing the
141 * tables. The values represent percent full of respective tables.
142 */
143
144 #define NAT_FLUSH_HI 95
145 #define NAT_FLUSH_LO 75
146
147 #define ST_FLUSH_HI 95
148 #define ST_FLUSH_LO 75
149
150 /*
151 * How full are the tables?
152 */
153
154 #define NAT_TAB_WATER_LEVEL(x) ((x)->ifs_nat_stats.ns_inuse * 100 \
155 / (x)->ifs_ipf_nattable_max)
156
157 #define ST_TAB_WATER_LEVEL(x) ((x)->ifs_ips_num * 100 \
158 / (x)->ifs_fr_statemax)
159
160 struct ipscan;
161 struct ifnet;
162
163 typedef struct ipf_stack ipf_stack_t;
164 typedef struct fr_info fr_info_t;
165
166 typedef int (* lookupfunc_t) __P((void *, int, void *, fr_info_t *, ipf_stack_t *));
167
168 /*
169 * i6addr is used as a container for both IPv4 and IPv6 addresses, as well
170 * as other types of objects, depending on its qualifier.
171 */
172 #ifdef USE_INET6
173 typedef union i6addr {
174 u_32_t i6[4];
175 struct in_addr in4;
176 struct in6_addr in6;
177 void *vptr[2];
178 lookupfunc_t lptr[2];
179 } i6addr_t;
180 #define in6_addr8 in6.s6_addr
181 #else
182 typedef union i6addr {
183 u_32_t i6[4];
184 struct in_addr in4;
185 void *vptr[2];
186 lookupfunc_t lptr[2];
187 } i6addr_t;
188 #endif
189
190 #define in4_addr in4.s_addr
191 #define iplookupnum i6[0]
192 #define iplookuptype i6[1]
193 /*
194 * NOTE: These DO overlap the above on 64bit systems and this IS recognised.
195 */
196 #define iplookupptr vptr[0]
197 #define iplookupfunc lptr[1]
198
199 #define I60(x) (((i6addr_t *)(x))->i6[0])
200 #define I61(x) (((i6addr_t *)(x))->i6[1])
201 #define I62(x) (((i6addr_t *)(x))->i6[2])
202 #define I63(x) (((i6addr_t *)(x))->i6[3])
203 #define HI60(x) ntohl(((i6addr_t *)(x))->i6[0])
204 #define HI61(x) ntohl(((i6addr_t *)(x))->i6[1])
205 #define HI62(x) ntohl(((i6addr_t *)(x))->i6[2])
206 #define HI63(x) ntohl(((i6addr_t *)(x))->i6[3])
207
208 #define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \
209 (I61(a) == I61(b)) && (I60(a) == I60(b)))
210 #define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \
211 (I61(a) != I61(b)) || (I60(a) != I60(b)))
212 #define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0)
213 #define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0)
214 #define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \
215 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff))
216 #define IP6_GT(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 IP6_LT(a,b) (ntohl(HI60(a)) < ntohl(HI60(b)) || \
224 (HI60(a) == HI60(b) && \
225 (ntohl(HI61(a)) < ntohl(HI61(b)) || \
226 (HI61(a) == HI61(b) && \
227 (ntohl(HI62(a)) < ntohl(HI62(b)) || \
228 (HI62(a) == HI62(b) && \
229 ntohl(HI63(a)) < ntohl(HI63(b))))))))
230 #define NLADD(n,x) htonl(ntohl(n) + (x))
231 #define IP6_INC(a) \
232 { i6addr_t *_i6 = (i6addr_t *)(a); \
233 _i6->i6[3] = NLADD(_i6->i6[3], 1); \
234 if (_i6->i6[3] == 0) { \
235 _i6->i6[2] = NLADD(_i6->i6[2], 1); \
236 if (_i6->i6[2] == 0) { \
237 _i6->i6[1] = NLADD(_i6->i6[1], 1); \
238 if (_i6->i6[1] == 0) { \
239 _i6->i6[0] = NLADD(_i6->i6[0], 1); \
240 } \
241 } \
242 } \
243 }
244 #define IP6_ADD(a,x,d) \
245 { i6addr_t *_s = (i6addr_t *)(a); \
246 i6addr_t *_d = (i6addr_t *)(d); \
247 _d->i6[3] = NLADD(_s->i6[3], x); \
248 if (ntohl(_d->i6[3]) < ntohl(_s->i6[3])) { \
249 _d->i6[2] = NLADD(_d->i6[2], 1); \
250 if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \
251 _d->i6[1] = NLADD(_d->i6[1], 1); \
252 if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \
253 _d->i6[0] = NLADD(_d->i6[0], 1); \
254 } \
255 } \
256 } \
257 }
258 #define IP6_AND(a,b,d) { i6addr_t *_s1 = (i6addr_t *)(a); \
259 i6addr_t *_s2 = (i6addr_t *)(b); \
260 i6addr_t *_d = (i6addr_t *)(d); \
261 _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \
262 _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \
263 _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \
264 _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \
265 }
266 #define IP6_MASKEQ(a,m,b) \
267 (((I60(a) & I60(m)) == I60(b)) && \
268 ((I61(a) & I61(m)) == I61(b)) && \
269 ((I62(a) & I62(m)) == I62(b)) && \
270 ((I63(a) & I63(m)) == I63(b)))
271 #define IP6_MASKNEQ(a,m,b) \
272 (((I60(a) & I60(m)) != I60(b)) || \
273 ((I61(a) & I61(m)) != I61(b)) || \
274 ((I62(a) & I62(m)) != I62(b)) || \
275 ((I63(a) & I63(m)) != I63(b)))
276 #define IP6_MERGE(a,b,c) \
277 { i6addr_t *_d, *_s1, *_s2; \
278 _d = (i6addr_t *)(a); \
279 _s1 = (i6addr_t *)(b); \
280 _s2 = (i6addr_t *)(c); \
281 _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \
282 _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \
283 _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \
284 _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \
285 }
286
287
288 typedef struct fr_ip {
289 u_32_t fi_v:4; /* IP version */
290 u_32_t fi_xx:4; /* spare */
291 u_32_t fi_tos:8; /* IP packet TOS */
292 u_32_t fi_ttl:8; /* IP packet TTL */
293 u_32_t fi_p:8; /* IP packet protocol */
294 u_32_t fi_optmsk; /* bitmask composed from IP options */
295 i6addr_t fi_src; /* source address from packet */
296 i6addr_t fi_dst; /* destination address from packet */
297 u_short fi_secmsk; /* bitmask composed from IP security options */
298 u_short fi_auth; /* authentication code from IP sec. options */
299 u_32_t fi_flx; /* packet flags */
300 u_32_t fi_tcpmsk; /* TCP options set/reset */
301 u_32_t fi_res1; /* RESERVED */
302 } fr_ip_t;
303
304 /*
305 * For use in fi_flx
306 */
307 #define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/
308 #define FI_OPTIONS 0x0002
309 #define FI_FRAG 0x0004
310 #define FI_SHORT 0x0008
311 #define FI_NATED 0x0010
312 #define FI_MULTICAST 0x0020
313 #define FI_BROADCAST 0x0040
314 #define FI_MBCAST 0x0080
315 #define FI_STATE 0x0100
316 #define FI_BADNAT 0x0200
317 #define FI_BAD 0x0400
318 #define FI_OOW 0x0800 /* Out of state window, else match */
319 #define FI_ICMPERR 0x1000
320 #define FI_FRAGBODY 0x2000
321 #define FI_BADSRC 0x4000
322 #define FI_LOWTTL 0x8000
323 #define FI_CMP 0xcf03 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL,broadcast */
324 #define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */
325 #define FI_WITH 0xeffe /* Not FI_TCPUDP */
326 #define FI_V6EXTHDR 0x10000
327 #define FI_COALESCE 0x20000
328 #define FI_ICMPQUERY 0x40000
329 #define FI_NEWNAT 0x80000
330 #define FI_MOREFRAG 0x100000
331 #define FI_NEG_OOW 0x10000000 /* packet underflows TCP window */
332 #define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */
333 #define FI_DONTCACHE 0x40000000 /* don't cache the result */
334 #define FI_IGNORE 0x80000000
335
336 #define fi_saddr fi_src.in4.s_addr
337 #define fi_daddr fi_dst.in4.s_addr
338 #define fi_srcnum fi_src.iplookupnum
339 #define fi_dstnum fi_dst.iplookupnum
340 #define fi_srctype fi_src.iplookuptype
341 #define fi_dsttype fi_dst.iplookuptype
342 #define fi_srcptr fi_src.iplookupptr
343 #define fi_dstptr fi_dst.iplookupptr
344 #define fi_srcfunc fi_src.iplookupfunc
345 #define fi_dstfunc fi_dst.iplookupfunc
346
347
348 /*
349 * These are both used by the state and NAT code to indicate that one port or
350 * the other should be treated as a wildcard.
351 * NOTE: When updating, check bit masks in ip_state.h and update there too.
352 */
353 #define SI_W_SPORT 0x00000100
354 #define SI_W_DPORT 0x00000200
355 #define SI_WILDP (SI_W_SPORT|SI_W_DPORT)
356 #define SI_W_SADDR 0x00000400
357 #define SI_W_DADDR 0x00000800
358 #define SI_WILDA (SI_W_SADDR|SI_W_DADDR)
359 #define SI_NEWFR 0x00001000
360 #define SI_CLONE 0x00002000
361 #define SI_CLONED 0x00004000
362
363
364
365
366 struct fr_info {
367 void *fin_ifp; /* interface packet is `on' */
368 fr_ip_t fin_fi; /* IP Packet summary */
369 union {
370 u_short fid_16[2]; /* TCP/UDP ports, ICMP code/type */
371 u_32_t fid_32;
372 } fin_dat;
373 int fin_out; /* in or out ? 1 == out, 0 == in */
374 int fin_rev; /* state only: 1 = reverse */
375 u_short fin_hlen; /* length of IP header in bytes */
376 u_char fin_tcpf; /* TCP header flags (SYN, ACK, etc) */
377 u_char fin_icode; /* ICMP error to return */
378 u_32_t fin_rule; /* rule # last matched */
379 char fin_group[FR_GROUPLEN]; /* group number, -1 for none */
380 struct frentry *fin_fr; /* last matching rule */
381 void *fin_dp; /* start of data past IP header */
382 int fin_dlen; /* length of data portion of packet */
383 int fin_plen;
384 int fin_ipoff; /* # bytes from buffer start to hdr */
385 u_32_t fin_id; /* IP packet id field */
386 u_short fin_off;
387 int fin_depth; /* Group nesting depth */
388 int fin_error; /* Error code to return */
389 u_int fin_pktnum;
390 void *fin_nattag;
391 union {
392 ip_t *fip_ip;
393 #ifdef USE_INET6
394 ip6_t *fip_ip6;
395 #endif
396 } fin_ipu;
397 mb_t **fin_mp; /* pointer to pointer to mbuf */
398 mb_t *fin_m; /* pointer to mbuf */
399 #ifdef MENTAT
400 mb_t *fin_qfm; /* pointer to mblk where pkt starts */
401 void *fin_qpi;
402 ipf_stack_t *fin_ifs;
403 #endif
404 #ifdef __sgi
405 void *fin_hbuf;
406 #endif
407 };
408
409 #define fin_ip fin_ipu.fip_ip
410 #define fin_ip6 fin_ipu.fip_ip6
411 #define fin_v fin_fi.fi_v
412 #define fin_p fin_fi.fi_p
413 #define fin_flx fin_fi.fi_flx
414 #define fin_optmsk fin_fi.fi_optmsk
415 #define fin_secmsk fin_fi.fi_secmsk
416 #define fin_auth fin_fi.fi_auth
417 #define fin_src fin_fi.fi_src.in4
418 #define fin_saddr fin_fi.fi_saddr
419 #define fin_dst fin_fi.fi_dst.in4
420 #define fin_daddr fin_fi.fi_daddr
421 #define fin_data fin_dat.fid_16
422 #define fin_sport fin_dat.fid_16[0]
423 #define fin_dport fin_dat.fid_16[1]
424 #define fin_ports fin_dat.fid_32
425
426 #ifdef USE_INET6
427 # define fin_src6 fin_fi.fi_src
428 # define fin_dst6 fin_fi.fi_dst
429 # define fin_dstip6 fin_fi.fi_dst.in6
430 # define fin_srcip6 fin_fi.fi_src.in6
431 #endif
432
433 #define IPF_IN 0
434 #define IPF_OUT 1
435
436 typedef struct frentry *(*ipfunc_t) __P((fr_info_t *, u_32_t *));
437 typedef int (*ipfuncinit_t) __P((struct frentry *,
438 ipf_stack_t *));
439
440 typedef struct ipfunc_resolve {
441 char ipfu_name[32];
442 ipfunc_t ipfu_addr;
443 ipfuncinit_t ipfu_init;
444 } ipfunc_resolve_t;
445
446 /*
447 * Size for compares on fr_info structures
448 */
449 #define FI_CSIZE offsetof(fr_info_t, fin_icode)
450 #define FI_LCSIZE offsetof(fr_info_t, fin_dp)
451
452 /*
453 * Size for copying cache fr_info structure
454 */
455 #define FI_COPYSIZE offsetof(fr_info_t, fin_dp)
456
457 /*
458 * Structure for holding IPFilter's tag information
459 */
460 #define IPFTAG_LEN 16
461 typedef struct {
462 union {
463 u_32_t iptu_num[4];
464 char iptu_tag[IPFTAG_LEN];
465 } ipt_un;
466 int ipt_not;
467 } ipftag_t;
468
469 #define ipt_tag ipt_un.iptu_tag
470 #define ipt_num ipt_un.iptu_num
471
472
473 /*
474 * This structure is used to hold information about the next hop for where
475 * to forward a packet.
476 */
477 typedef struct frdest {
478 void *fd_ifp;
479 i6addr_t fd_ip6;
480 char fd_ifname[LIFNAMSIZ];
481 } frdest_t;
482
483 #define fd_ip fd_ip6.in4
484
485
486 /*
487 * This structure holds information about a port comparison.
488 */
489 typedef struct frpcmp {
490 int frp_cmp; /* data for port comparisons */
491 u_short frp_port; /* top port for <> and >< */
492 u_short frp_top; /* top port for <> and >< */
493 } frpcmp_t;
494
495 #define FR_NONE 0
496 #define FR_EQUAL 1
497 #define FR_NEQUAL 2
498 #define FR_LESST 3
499 #define FR_GREATERT 4
500 #define FR_LESSTE 5
501 #define FR_GREATERTE 6
502 #define FR_OUTRANGE 7
503 #define FR_INRANGE 8
504 #define FR_INCRANGE 9
505
506 /*
507 * Structure containing all the relevant TCP things that can be checked in
508 * a filter rule.
509 */
510 typedef struct frtuc {
511 u_char ftu_tcpfm; /* tcp flags mask */
512 u_char ftu_tcpf; /* tcp flags */
513 frpcmp_t ftu_src;
514 frpcmp_t ftu_dst;
515 } frtuc_t;
516
517 #define ftu_scmp ftu_src.frp_cmp
518 #define ftu_dcmp ftu_dst.frp_cmp
519 #define ftu_sport ftu_src.frp_port
520 #define ftu_dport ftu_dst.frp_port
521 #define ftu_stop ftu_src.frp_top
522 #define ftu_dtop ftu_dst.frp_top
523
524 #define FR_TCPFMAX 0x3f
525
526 /*
527 * This structure makes up what is considered to be the IPFilter specific
528 * matching components of a filter rule, as opposed to the data structures
529 * used to define the result which are in frentry_t and not here.
530 */
531 typedef struct fripf {
532 fr_ip_t fri_ip;
533 fr_ip_t fri_mip; /* mask structure */
534
535 u_short fri_icmpm; /* data for ICMP packets (mask) */
536 u_short fri_icmp;
537
538 frtuc_t fri_tuc;
539 int fri_satype; /* addres type */
540 int fri_datype; /* addres type */
541 int fri_sifpidx; /* doing dynamic addressing */
542 int fri_difpidx; /* index into fr_ifps[] to use when */
543 } fripf_t;
544
545 #define fri_dstnum fri_ip.fi_dstnum
546 #define fri_srcnum fri_mip.fi_srcnum
547 #define fri_dstptr fri_ip.fi_dstptr
548 #define fri_srcptr fri_mip.fi_srcptr
549
550 #define FRI_NORMAL 0 /* Normal address */
551 #define FRI_DYNAMIC 1 /* dynamic address */
552 #define FRI_LOOKUP 2 /* address is a pool # */
553 #define FRI_RANGE 3 /* address/mask is a range */
554 #define FRI_NETWORK 4 /* network address from if */
555 #define FRI_BROADCAST 5 /* broadcast address from if */
556 #define FRI_PEERADDR 6 /* Peer address for P-to-P */
557 #define FRI_NETMASKED 7 /* network address with netmask from if */
558
559
560 typedef struct frentry * (* frentfunc_t) __P((fr_info_t *));
561
562 typedef struct frentry {
563 ipfmutex_t fr_lock;
564 struct frentry *fr_next;
565 struct frentry **fr_grp;
566 struct ipscan *fr_isc;
567 void *fr_ifas[4];
568 void *fr_ptr; /* for use with fr_arg */
569 char *fr_comment; /* text comment for rule */
570 int fr_ref; /* reference count - for grouping */
571 int fr_statecnt; /* state count - for limit rules */
572 /*
573 * These are only incremented when a packet matches this rule and
574 * it is the last match
575 */
576 U_QUAD_T fr_hits;
577 U_QUAD_T fr_bytes;
578
579 /*
580 * For PPS rate limiting
581 */
582 struct timeval fr_lastpkt;
583 int fr_curpps;
584
585 union {
586 void *fru_data;
587 caddr_t fru_caddr;
588 fripf_t *fru_ipf;
589 frentfunc_t fru_func;
590 } fr_dun;
591
592 /*
593 * Fields after this may not change whilst in the kernel.
594 */
595 ipfunc_t fr_func; /* call this function */
596 int fr_dsize;
597 int fr_pps;
598 int fr_statemax; /* max reference count */
599 int fr_flineno; /* line number from conf file */
600 u_32_t fr_type;
601 u_32_t fr_flags; /* per-rule flags && options (see below) */
602 u_32_t fr_logtag; /* user defined log tag # */
603 u_32_t fr_collect; /* collection number */
604 uuid_t fr_uuid; /* user defined uuid */
605 u_int fr_arg; /* misc. numeric arg for rule */
606 u_int fr_loglevel; /* syslog log facility + priority */
607 u_int fr_age[2]; /* non-TCP timeouts */
608 u_char fr_v;
609 u_char fr_icode; /* return ICMP code */
610 char fr_group[FR_GROUPLEN]; /* group to which this rule belongs */
611 char fr_grhead[FR_GROUPLEN]; /* group # which this rule starts */
612 ipftag_t fr_nattag;
613 char fr_ifnames[4][LIFNAMSIZ];
614 char fr_isctag[16];
615 frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */
616 frdest_t fr_dif; /* duplicate packet interface */
617 /*
618 * This must be last and will change after loaded into the kernel.
619 */
620 u_int fr_cksum; /* checksum on filter rules for performance */
621 } frentry_t;
622
623 #define fr_caddr fr_dun.fru_caddr
624 #define fr_data fr_dun.fru_data
625 #define fr_dfunc fr_dun.fru_func
626 #define fr_ipf fr_dun.fru_ipf
627 #define fr_ip fr_ipf->fri_ip
628 #define fr_mip fr_ipf->fri_mip
629 #define fr_icmpm fr_ipf->fri_icmpm
630 #define fr_icmp fr_ipf->fri_icmp
631 #define fr_tuc fr_ipf->fri_tuc
632 #define fr_satype fr_ipf->fri_satype
633 #define fr_datype fr_ipf->fri_datype
634 #define fr_sifpidx fr_ipf->fri_sifpidx
635 #define fr_difpidx fr_ipf->fri_difpidx
636 #define fr_proto fr_ip.fi_p
637 #define fr_mproto fr_mip.fi_p
638 #define fr_ttl fr_ip.fi_ttl
639 #define fr_mttl fr_mip.fi_ttl
640 #define fr_tos fr_ip.fi_tos
641 #define fr_mtos fr_mip.fi_tos
642 #define fr_tcpfm fr_tuc.ftu_tcpfm
643 #define fr_tcpf fr_tuc.ftu_tcpf
644 #define fr_scmp fr_tuc.ftu_scmp
645 #define fr_dcmp fr_tuc.ftu_dcmp
646 #define fr_dport fr_tuc.ftu_dport
647 #define fr_sport fr_tuc.ftu_sport
648 #define fr_stop fr_tuc.ftu_stop
649 #define fr_dtop fr_tuc.ftu_dtop
650 #define fr_dst fr_ip.fi_dst.in4
651 #define fr_daddr fr_ip.fi_dst.in4.s_addr
652 #define fr_src fr_ip.fi_src.in4
653 #define fr_saddr fr_ip.fi_src.in4.s_addr
654 #define fr_dmsk fr_mip.fi_dst.in4
655 #define fr_dmask fr_mip.fi_dst.in4.s_addr
656 #define fr_smsk fr_mip.fi_src.in4
657 #define fr_smask fr_mip.fi_src.in4.s_addr
658 #define fr_dstnum fr_ip.fi_dstnum
659 #define fr_srcnum fr_ip.fi_srcnum
660 #define fr_dsttype fr_ip.fi_dsttype
661 #define fr_srctype fr_ip.fi_srctype
662 #define fr_dstptr fr_mip.fi_dstptr
663 #define fr_srcptr fr_mip.fi_srcptr
664 #define fr_dstfunc fr_mip.fi_dstfunc
665 #define fr_srcfunc fr_mip.fi_srcfunc
666 #define fr_optbits fr_ip.fi_optmsk
667 #define fr_optmask fr_mip.fi_optmsk
668 #define fr_secbits fr_ip.fi_secmsk
669 #define fr_secmask fr_mip.fi_secmsk
670 #define fr_authbits fr_ip.fi_auth
671 #define fr_authmask fr_mip.fi_auth
672 #define fr_flx fr_ip.fi_flx
673 #define fr_mflx fr_mip.fi_flx
674 #define fr_ifname fr_ifnames[0]
675 #define fr_oifname fr_ifnames[2]
676 #define fr_ifa fr_ifas[0]
677 #define fr_oifa fr_ifas[2]
678 #define fr_tif fr_tifs[0]
679 #define fr_rif fr_tifs[1]
680
681 #define FR_NOLOGTAG 0
682
683 #define FR_CMPSIZ (sizeof(struct frentry) - \
684 offsetof(struct frentry, fr_func))
685
686 /*
687 * fr_type
688 */
689 #define FR_T_NONE 0
690 #define FR_T_IPF 1 /* IPF structures */
691 #define FR_T_BPFOPC 2 /* BPF opcode */
692 #define FR_T_CALLFUNC 3 /* callout to function in fr_func only */
693 #define FR_T_COMPIPF 4 /* compiled C code */
694 #define FR_T_BUILTIN 0x80000000 /* rule is in kernel space */
695
696 /*
697 * fr_flags
698 */
699 #define FR_CALL 0x00000 /* call rule */
700 #define FR_BLOCK 0x00001 /* do not allow packet to pass */
701 #define FR_PASS 0x00002 /* allow packet to pass */
702 #define FR_AUTH 0x00003 /* use authentication */
703 #define FR_PREAUTH 0x00004 /* require preauthentication */
704 #define FR_ACCOUNT 0x00005 /* Accounting rule */
705 #define FR_SKIP 0x00006 /* skip rule */
706 #define FR_DIVERT 0x00007 /* divert rule */
707 #define FR_CMDMASK 0x0000f
708 #define FR_LOG 0x00010 /* Log */
709 #define FR_LOGB 0x00011 /* Log-fail */
710 #define FR_LOGP 0x00012 /* Log-pass */
711 #define FR_LOGMASK (FR_LOG|FR_CMDMASK)
712 #define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */
713 #define FR_NOTSRCIP 0x00040
714 #define FR_NOTDSTIP 0x00080
715 #define FR_QUICK 0x00100 /* match & stop processing list */
716 #define FR_KEEPFRAG 0x00200 /* keep fragment information */
717 #define FR_KEEPSTATE 0x00400 /* keep `connection' state information */
718 #define FR_FASTROUTE 0x00800 /* bypass normal routing */
719 #define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */
720 #define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */
721 #define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */
722 #define FR_OUTQUE 0x04000 /* outgoing packets */
723 #define FR_INQUE 0x08000 /* ingoing packets */
724 #define FR_LOGBODY 0x10000 /* Log the body */
725 #define FR_LOGFIRST 0x20000 /* Log the first byte if state held */
726 #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */
727 #define FR_DUP 0x80000 /* duplicate packet */
728 #define FR_FRSTRICT 0x100000 /* strict frag. cache */
729 #define FR_STSTRICT 0x200000 /* strict keep state */
730 #define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */
731 #define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */
732 #define FR_STATESYNC 0x1000000 /* synchronize state to slave */
733 #define FR_CFWLOG 0x2000000 /* Global CFW logging enabled */
734 #define FR_NOMATCH 0x8000000 /* no match occured */
735 /* 0x10000000 FF_LOGPASS */
736 /* 0x20000000 FF_LOGBLOCK */
737 /* 0x40000000 FF_LOGNOMATCH */
738 /* 0x80000000 FF_BLOCKNONIP */
739 #define FR_COPIED 0x40000000 /* copied from user space */
740 #define FR_INACTIVE 0x80000000 /* only used when flush'ing rules */
741
742 #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP)
743 #define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK)
744 #define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS)
745 #define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH)
746 #define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH)
747 #define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT)
748 #define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP)
749 #define FR_ISNOMATCH(x) ((x) & FR_NOMATCH)
750 #define FR_INOUT (FR_INQUE|FR_OUTQUE)
751
752 /*
753 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
754 */
755 #define FF_LOGPASS 0x10000000
756 #define FF_LOGBLOCK 0x20000000
757 #define FF_LOGNOMATCH 0x40000000
758 #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
759 #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */
760
761
762 /*
763 * Structure that passes information on what/how to flush to the kernel.
764 */
765 typedef struct ipfflush {
766 int ipflu_how;
767 int ipflu_arg;
768 } ipfflush_t;
769
770
771 /*
772 *
773 */
774 typedef struct ipfgetctl {
775 u_int ipfg_min; /* min value */
776 u_int ipfg_current; /* current value */
777 u_int ipfg_max; /* max value */
778 u_int ipfg_default; /* default value */
779 u_int ipfg_steps; /* value increments */
780 char ipfg_name[40]; /* tag name for this control */
781 } ipfgetctl_t;
782
783 typedef struct ipfsetctl {
784 int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */
785 u_int ipfs_value; /* min value */
786 char ipfs_name[40]; /* tag name for this control */
787 } ipfsetctl_t;
788
789
790 /*
791 * Some of the statistics below are in their own counters, but most are kept
792 * in this single structure so that they can all easily be collected and
793 * copied back as required.
794 *
795 * NOTE: when changing, keep in sync with kstats (below).
796 */
797 typedef struct filterstats {
798 u_long fr_pass; /* packets allowed */
799 u_long fr_block; /* packets denied */
800 u_long fr_nom; /* packets which don't match any rule */
801 u_long fr_short; /* packets which are short */
802 u_long fr_ppkl; /* packets allowed and logged */
803 u_long fr_bpkl; /* packets denied and logged */
804 u_long fr_npkl; /* packets unmatched and logged */
805 u_long fr_pkl; /* packets logged */
806 u_long fr_skip; /* packets to be logged but buffer full */
807 u_long fr_ret; /* packets for which a return is sent */
808 u_long fr_acct; /* packets for which counting was performed */
809 u_long fr_bnfr; /* bad attempts to allocate fragment state */
810 u_long fr_nfr; /* new fragment state kept */
811 u_long fr_cfr; /* add new fragment state but complete pkt */
812 u_long fr_bads; /* bad attempts to allocate packet state */
813 u_long fr_ads; /* new packet state kept */
814 u_long fr_chit; /* cached hit */
815 u_long fr_tcpbad; /* TCP checksum check failures */
816 u_long fr_pull[2]; /* good and bad pullup attempts */
817 u_long fr_badsrc; /* source received doesn't match route */
818 u_long fr_badttl; /* TTL in packet doesn't reach minimum */
819 u_long fr_bad; /* bad IP packets to the filter */
820 u_long fr_ipv6; /* IPv6 packets in/out */
821 u_long fr_ppshit; /* dropped because of pps ceiling */
822 u_long fr_ipud; /* IP id update failures */
823 } filterstats_t;
824
825 /*
826 * kstat "copy" of the above - keep in sync!
827 * also keep in sync with initialisation code in solaris.c, ipf_kstat_init().
828 */
829 typedef struct filter_kstats {
830 kstat_named_t fks_pass; /* see above for comments */
831 kstat_named_t fks_block;
832 kstat_named_t fks_nom;
833 kstat_named_t fks_short;
834 kstat_named_t fks_ppkl;
835 kstat_named_t fks_bpkl;
836 kstat_named_t fks_npkl;
837 kstat_named_t fks_pkl;
838 kstat_named_t fks_skip;
839 kstat_named_t fks_ret;
840 kstat_named_t fks_acct;
841 kstat_named_t fks_bnfr;
842 kstat_named_t fks_nfr;
843 kstat_named_t fks_cfr;
844 kstat_named_t fks_bads;
845 kstat_named_t fks_ads;
846 kstat_named_t fks_chit;
847 kstat_named_t fks_tcpbad;
848 kstat_named_t fks_pull[2];
849 kstat_named_t fks_badsrc;
850 kstat_named_t fks_badttl;
851 kstat_named_t fks_bad;
852 kstat_named_t fks_ipv6;
853 kstat_named_t fks_ppshit;
854 kstat_named_t fks_ipud;
855 } filter_kstats_t;
856
857 /*
858 * Log structure. Each packet header logged is prepended by one of these.
859 * Following this in the log records read from the device will be an ipflog
860 * structure which is then followed by any packet data.
861 */
862 typedef struct iplog {
863 u_32_t ipl_magic;
864 u_int ipl_count;
865 struct timeval ipl_time;
866 size_t ipl_dsize;
867 struct iplog *ipl_next;
868 } iplog_t;
869
870 #define ipl_sec ipl_time.tv_sec
871 #define ipl_usec ipl_time.tv_usec
872
873 #define IPL_MAGIC 0x49504c4d /* 'IPLM' */
874 #define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */
875 #define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */
876 #define IPLOG_SIZE sizeof(iplog_t)
877
878 typedef struct ipflog {
879 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
880 (defined(OpenBSD) && (OpenBSD >= 199603))
881 #else
882 u_int fl_unit;
883 #endif
884 u_32_t fl_rule;
885 u_32_t fl_flags;
886 u_32_t fl_lflags;
887 u_32_t fl_logtag;
888 ipftag_t fl_nattag;
889 uuid_t fl_uuid;
890 u_short fl_plen; /* extra data after hlen */
891 u_short fl_loglevel; /* syslog log level */
892 char fl_group[FR_GROUPLEN];
893 u_char fl_hlen; /* length of IP headers saved */
894 u_char fl_dir;
895 u_char fl_xxx[2]; /* pad */
896 char fl_ifname[LIFNAMSIZ];
897 } ipflog_t;
898
899 #ifndef IPF_LOGGING
900 # define IPF_LOGGING 0
901 #endif
902 #ifndef IPF_DEFAULT_PASS
903 # define IPF_DEFAULT_PASS FR_PASS
904 #endif
905
906 #define DEFAULT_IPFLOGSIZE 8192
907 #ifndef IPFILTER_LOGSIZE
908 # define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE
909 #else
910 # if IPFILTER_LOGSIZE < DEFAULT_IPFLOGSIZE
911 # error IPFILTER_LOGSIZE too small. Must be >= DEFAULT_IPFLOGSIZE
912 # endif
913 #endif
914
915 #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */
916
917 /*
918 * Device filenames for reading log information. Use ipf on Solaris2 because
919 * ipl is already a name used by something else.
920 */
921 #ifndef IPL_NAME
922 # ifdef SOLARIS
923 # define IPL_NAME "/dev/ipf"
924 # else
925 # define IPL_NAME "/dev/ipl"
926 # endif
927 #endif
928 /*
929 * Pathnames for various IP Filter control devices. Used by LKM
930 * and userland, so defined here.
931 */
932 #define IPNAT_NAME "/dev/ipnat"
933 #define IPSTATE_NAME "/dev/ipstate"
934 #define IPAUTH_NAME "/dev/ipauth"
935 #define IPSYNC_NAME "/dev/ipsync"
936 #define IPSCAN_NAME "/dev/ipscan"
937 #define IPLOOKUP_NAME "/dev/iplookup"
938 #define IPFEV_NAME "/dev/ipfev"
939
940 #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */
941 #define IPL_LOGNAT 1
942 #define IPL_LOGSTATE 2
943 #define IPL_LOGAUTH 3
944 #define IPL_LOGSYNC 4
945 #define IPL_LOGSCAN 5
946 #define IPL_LOGLOOKUP 6
947 #define IPL_LOGEV 7
948 #define IPL_LOGCOUNT 8
949 #define IPL_LOGMAX 8
950 #define IPL_LOGSIZE (IPL_LOGMAX + 1)
951 #define IPL_LOGALL -1
952 #define IPL_LOGNONE -2
953
954 /*
955 * For SIOCGETFS
956 */
957 typedef struct friostat {
958 struct filterstats f_st[2];
959 struct frentry *f_ipf[2][2];
960 struct frentry *f_acct[2][2];
961 struct frentry *f_ipf6[2][2];
962 struct frentry *f_acct6[2][2];
963 struct frentry *f_auth;
964 struct frgroup *f_groups[IPL_LOGSIZE][2];
965 u_long f_froute[2];
966 u_long f_ticks;
967 int f_locks[IPL_LOGMAX];
968 size_t f_kmutex_sz;
969 size_t f_krwlock_sz;
970 int f_defpass; /* default pass - from fr_pass */
971 int f_active; /* 1 or 0 - active rule set */
972 int f_running; /* 1 if running, else 0 */
973 int f_logging; /* 1 if enabled, else 0 */
974 int f_features;
975 char f_version[32]; /* version string */
976 } friostat_t;
977
978 #define f_fin f_ipf[0]
979 #define f_fin6 f_ipf6[0]
980 #define f_fout f_ipf[1]
981 #define f_fout6 f_ipf6[1]
982 #define f_acctin f_acct[0]
983 #define f_acctin6 f_acct6[0]
984 #define f_acctout f_acct[1]
985 #define f_acctout6 f_acct6[1]
986
987 #define IPF_FEAT_LKM 0x001
988 #define IPF_FEAT_LOG 0x002
989 #define IPF_FEAT_LOOKUP 0x004
990 #define IPF_FEAT_BPF 0x008
991 #define IPF_FEAT_COMPILED 0x010
992 #define IPF_FEAT_CKSUM 0x020
993 #define IPF_FEAT_SYNC 0x040
994 #define IPF_FEAT_SCAN 0x080
995 #define IPF_FEAT_IPV6 0x100
996
997 typedef struct optlist {
998 u_short ol_val;
999 int ol_bit;
1000 } optlist_t;
1001
1002
1003 /*
1004 * Group list structure.
1005 */
1006 typedef struct frgroup {
1007 struct frgroup *fg_next;
1008 struct frentry *fg_head;
1009 struct frentry *fg_start;
1010 u_32_t fg_flags;
1011 int fg_ref;
1012 char fg_name[FR_GROUPLEN];
1013 } frgroup_t;
1014
1015 #define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name)
1016
1017
1018 /*
1019 * Used by state and NAT tables
1020 */
1021 typedef struct icmpinfo {
1022 u_short ici_id;
1023 u_short ici_seq;
1024 u_char ici_type;
1025 } icmpinfo_t;
1026
1027 typedef struct udpinfo {
1028 u_short us_sport;
1029 u_short us_dport;
1030 } udpinfo_t;
1031
1032
1033 typedef struct tcpdata {
1034 u_32_t td_end;
1035 u_32_t td_maxend;
1036 u_32_t td_maxwin;
1037 u_32_t td_winscale;
1038 u_32_t td_maxseg;
1039 int td_winflags;
1040 } tcpdata_t;
1041
1042 #define TCP_WSCALE_MAX 14
1043
1044 #define TCP_WSCALE_SEEN 0x00000001
1045 #define TCP_WSCALE_FIRST 0x00000002
1046 #define TCP_SACK_PERMIT 0x00000004
1047
1048
1049 typedef struct tcpinfo {
1050 u_short ts_sport;
1051 u_short ts_dport;
1052 tcpdata_t ts_data[2];
1053 } tcpinfo_t;
1054
1055
1056 /*
1057 * Structures to define a GRE header as seen in a packet.
1058 */
1059 struct grebits {
1060 u_32_t grb_C:1;
1061 u_32_t grb_R:1;
1062 u_32_t grb_K:1;
1063 u_32_t grb_S:1;
1064 u_32_t grb_s:1;
1065 u_32_t grb_recur:1;
1066 u_32_t grb_A:1;
1067 u_32_t grb_flags:3;
1068 u_32_t grb_ver:3;
1069 u_short grb_ptype;
1070 };
1071
1072 typedef struct grehdr {
1073 union {
1074 struct grebits gru_bits;
1075 u_short gru_flags;
1076 } gr_un;
1077 u_short gr_len;
1078 u_short gr_call;
1079 } grehdr_t;
1080
1081 #define gr_flags gr_un.gru_flags
1082 #define gr_bits gr_un.gru_bits
1083 #define gr_ptype gr_bits.grb_ptype
1084 #define gr_C gr_bits.grb_C
1085 #define gr_R gr_bits.grb_R
1086 #define gr_K gr_bits.grb_K
1087 #define gr_S gr_bits.grb_S
1088 #define gr_s gr_bits.grb_s
1089 #define gr_recur gr_bits.grb_recur
1090 #define gr_A gr_bits.grb_A
1091 #define gr_ver gr_bits.grb_ver
1092
1093 /*
1094 * GRE information tracked by "keep state"
1095 */
1096 typedef struct greinfo {
1097 u_short gs_call[2];
1098 u_short gs_flags;
1099 u_short gs_ptype;
1100 } greinfo_t;
1101
1102 #define GRE_REV(x) ((ntohs(x) >> 13) & 7)
1103
1104
1105 /*
1106 * Format of an Authentication header
1107 */
1108 typedef struct authhdr {
1109 u_char ah_next;
1110 u_char ah_plen;
1111 u_short ah_reserved;
1112 u_32_t ah_spi;
1113 u_32_t ah_seq;
1114 /* Following the sequence number field is 0 or more bytes of */
1115 /* authentication data, as specified by ah_plen - RFC 2402. */
1116 } authhdr_t;
1117
1118
1119 /*
1120 * Timeout tail queue list member
1121 */
1122 typedef struct ipftqent {
1123 struct ipftqent **tqe_pnext;
1124 struct ipftqent *tqe_next;
1125 struct ipftq *tqe_ifq;
1126 void *tqe_parent; /* pointer back to NAT/state struct */
1127 u_long tqe_die; /* when this entriy is to die */
1128 u_long tqe_touched;
1129 int tqe_flags;
1130 int tqe_state[2]; /* current state of this entry */
1131 } ipftqent_t;
1132
1133 #define TQE_RULEBASED 0x00000001
1134
1135
1136 /*
1137 * Timeout tail queue head for IPFilter
1138 */
1139 typedef struct ipftq {
1140 ipfmutex_t ifq_lock;
1141 u_int ifq_ttl;
1142 ipftqent_t *ifq_head;
1143 ipftqent_t **ifq_tail;
1144 struct ipftq *ifq_next;
1145 struct ipftq **ifq_pnext;
1146 int ifq_ref;
1147 u_int ifq_flags;
1148 } ipftq_t;
1149
1150 #define IFQF_USER 0x01 /* User defined aging */
1151 #define IFQF_DELETE 0x02 /* Marked for deletion */
1152 #define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */
1153
1154 #define IPF_HZ_MULT 1
1155 #define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */
1156 /* checks its timeout queues. */
1157 #define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE)
1158
1159 /*
1160 * Structure to define address for pool lookups.
1161 */
1162 typedef struct {
1163 u_char adf_len;
1164 sa_family_t adf_family;
1165 i6addr_t adf_addr;
1166 } addrfamily_t;
1167
1168
1169 /*
1170 * Object structure description. For passing through in ioctls.
1171 */
1172 typedef struct ipfobj {
1173 u_32_t ipfo_rev; /* IPFilter version number */
1174 u_32_t ipfo_size; /* size of object at ipfo_ptr */
1175 void *ipfo_ptr; /* pointer to object */
1176 int ipfo_type; /* type of object being pointed to */
1177 int ipfo_offset; /* bytes from ipfo_ptr where to start */
1178 u_char ipfo_xxxpad[32]; /* reserved for future use */
1179 } ipfobj_t;
1180
1181 /*
1182 * ioctl struct for setting what zone further ioctls will act on. ipfz_gz is a
1183 * boolean: set it to 1 to operate on the GZ-controlled stack.
1184 */
1185 typedef struct ipfzoneobj {
1186 u_32_t ipfz_gz; /* GZ stack boolean */
1187 char ipfz_zonename[ZONENAME_MAX]; /* zone to act on */
1188 } ipfzoneobj_t;
1189
1190 /* ioctl to grab CFW logging parameters */
1191 typedef struct ipfcfwcfg {
1192 uint32_t ipfcfwc_maxevsize;
1193 uint32_t ipfcfwc_evringsize;
1194 } ipfcfwcfg_t;
1195
1196 #if defined(_KERNEL)
1197 /* Set ipfs_zoneid to this if no zone has been set: */
1198 #define IPFS_ZONE_UNSET -2
1199
1200 typedef struct ipf_devstate {
1201 zoneid_t ipfs_zoneid;
1202 minor_t ipfs_minor;
1203 boolean_t ipfs_gz;
1204 } ipf_devstate_t;
1205 #endif
1206
1207 #define IPFOBJ_FRENTRY 0 /* struct frentry */
1208 #define IPFOBJ_IPFSTAT 1 /* struct friostat */
1209 #define IPFOBJ_IPFINFO 2 /* struct fr_info */
1210 #define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */
1211 #define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */
1212 #define IPFOBJ_IPNAT 5 /* struct ipnat */
1213 #define IPFOBJ_NATSTAT 6 /* struct natstat */
1214 #define IPFOBJ_STATESAVE 7 /* struct ipstate_save */
1215 #define IPFOBJ_NATSAVE 8 /* struct nat_save */
1216 #define IPFOBJ_NATLOOKUP 9 /* struct natlookup */
1217 #define IPFOBJ_IPSTATE 10 /* struct ipstate */
1218 #define IPFOBJ_STATESTAT 11 /* struct ips_stat */
1219 #define IPFOBJ_FRAUTH 12 /* struct frauth */
1220 #define IPFOBJ_TUNEABLE 13 /* struct ipftune */
1221 #define IPFOBJ_NAT 14 /* struct nat */
1222 #define IPFOBJ_IPFITER 15 /* struct ipfruleiter */
1223 #define IPFOBJ_GENITER 16 /* struct ipfgeniter */
1224 #define IPFOBJ_GTABLE 17 /* struct ipftable */
1225 #define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */
1226 #define IPFOBJ_COUNT 19 /* How many #defines are above this? */
1227
1228
1229 typedef union ipftunevalptr {
1230 void *ipftp_void;
1231 u_long *ipftp_long;
1232 u_int *ipftp_int;
1233 u_short *ipftp_short;
1234 u_char *ipftp_char;
1235 } ipftunevalptr_t;
1236
1237 typedef struct ipftuneable {
1238 ipftunevalptr_t ipft_una;
1239 char *ipft_name;
1240 u_long ipft_min;
1241 u_long ipft_max;
1242 int ipft_sz;
1243 int ipft_flags;
1244 struct ipftuneable *ipft_next;
1245 } ipftuneable_t;
1246
1247 #define ipft_addr ipft_una.ipftp_void
1248 #define ipft_plong ipft_una.ipftp_long
1249 #define ipft_pint ipft_una.ipftp_int
1250 #define ipft_pshort ipft_una.ipftp_short
1251 #define ipft_pchar ipft_una.ipftp_char
1252
1253 #define IPFT_RDONLY 1 /* read-only */
1254 #define IPFT_WRDISABLED 2 /* write when disabled only */
1255
1256 typedef union ipftuneval {
1257 u_long ipftu_long;
1258 u_int ipftu_int;
1259 u_short ipftu_short;
1260 u_char ipftu_char;
1261 } ipftuneval_t;
1262
1263 typedef struct ipftune {
1264 void *ipft_cookie;
1265 ipftuneval_t ipft_un;
1266 u_long ipft_min;
1267 u_long ipft_max;
1268 int ipft_sz;
1269 int ipft_flags;
1270 char ipft_name[80];
1271 } ipftune_t;
1272
1273 #define ipft_vlong ipft_un.ipftu_long
1274 #define ipft_vint ipft_un.ipftu_int
1275 #define ipft_vshort ipft_un.ipftu_short
1276 #define ipft_vchar ipft_un.ipftu_char
1277
1278 /*
1279 * ipfruleiter is iterator structure used for filter rules.
1280 */
1281 typedef struct ipfruleiter {
1282 int iri_ver;
1283 int iri_inout;
1284 char iri_group[FR_GROUPLEN];
1285 int iri_active;
1286 int iri_nrules;
1287 frentry_t *iri_rule;
1288 } ipfruleiter_t;
1289
1290 /* Values for iri_inout */
1291 #define F_IN 0
1292 #define F_OUT 1
1293 #define F_ACIN 2
1294 #define F_ACOUT 3
1295
1296 /*
1297 * ipfgeniter is generic iterator structure used for nat rules,
1298 * hostmap entries and nat table entries.
1299 */
1300 typedef struct ipfgeniter {
1301 int igi_type; /* type of data we're looking at */
1302 int igi_nitems;
1303 void *igi_data;
1304 } ipfgeniter_t;
1305
1306 #define IPFGENITER_IPF 0
1307 #define IPFGENITER_NAT 1
1308 #define IPFGENITER_IPNAT 2
1309 #define IPFGENITER_FRAG 3
1310 #define IPFGENITER_AUTH 4
1311 #define IPFGENITER_STATE 5
1312 #define IPFGENITER_NATFRAG 6
1313 #define IPFGENITER_HOSTMAP 7
1314 #define IPFGENITER_LOOKUP 8
1315
1316 typedef struct ipftable {
1317 int ita_type;
1318 void *ita_table;
1319 } ipftable_t;
1320
1321 typedef struct ipftoken {
1322 struct ipftoken *ipt_next;
1323 struct ipftoken **ipt_pnext;
1324 void *ipt_ctx;
1325 void *ipt_data;
1326 u_long ipt_die;
1327 int ipt_type;
1328 int ipt_uid;
1329 int ipt_subtype;
1330 int ipt_alive;
1331 } ipftoken_t;
1332
1333
1334 /*
1335 * sync commands
1336 */
1337 #define IPFSYNC_RESYNC 0
1338 #define IPFSYNC_NEWIFP 1
1339 #define IPFSYNC_OLDIFP 2
1340
1341
1342 /*
1343 ** HPUX Port
1344 */
1345 #ifdef __hpux
1346 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */
1347 # define IPF_SMAJ 0 /* temp assignment XXX, not critical */
1348 #endif
1349
1350 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
1351 (__FreeBSD_version >= 220000)
1352 # define CDEV_MAJOR 79
1353 #endif
1354
1355 /*
1356 * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns
1357 * on those hooks. We don't need any special mods in non-IP Filter code
1358 * with this!
1359 */
1360 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
1361 (defined(NetBSD1_2) && NetBSD1_2 > 1) || \
1362 (defined(__FreeBSD__) && (__FreeBSD_version >= 500043))
1363 # if (NetBSD >= 199905)
1364 # define PFIL_HOOKS
1365 # endif
1366 # ifdef PFIL_HOOKS
1367 # define NETBSD_PF
1368 # endif
1369 #endif
1370
1371 #ifndef _KERNEL
1372 extern int fr_check __P((struct ip *, int, void *, int, mb_t **, ipf_stack_t *));
1373 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **, ipf_stack_t *));
1374 extern int ipf_log __P((void));
1375 extern struct ifnet *get_unit __P((char *, int, ipf_stack_t *));
1376 extern char *get_ifname __P((struct ifnet *));
1377 # if defined(__NetBSD__) || defined(__OpenBSD__) || \
1378 (_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000)
1379 extern int frrequest __P((int, u_long, caddr_t, int, int, ipf_stack_t *));
1380 # else
1381 extern int iplioctl __P((int, ioctlcmd_t, caddr_t, int));
1382 # endif
1383 extern int iplopen __P((dev_t, int));
1384 extern int iplclose __P((dev_t, int));
1385 extern void m_freem __P((mb_t *));
1386 #else /* #ifndef _KERNEL */
1387 extern phy_if_t get_unit __P((char *, int, ipf_stack_t *));
1388 # if defined(__NetBSD__) && defined(PFIL_HOOKS)
1389 extern void ipfilterattach __P((int));
1390 # endif
1391 extern int ipl_enable __P((void));
1392 extern int ipl_disable __P((void));
1393 # ifdef MENTAT
1394 extern int fr_check __P((struct ip *, int, void *, int, void *,
1395 mblk_t **, ipf_stack_t *));
1396 # if SOLARIS
1397 # if SOLARIS2 >= 7
1398 extern int iplioctl __P((dev_t, int, intptr_t, int, cred_t *, int *));
1399 # else
1400 extern int iplioctl __P((dev_t, int, int *, int, cred_t *, int *));
1401 # endif
1402 # if SOLARIS2 >= 10 && defined(_KERNEL)
1403 extern int fr_make_rst __P((fr_info_t *));
1404 extern int fr_make_icmp __P((fr_info_t *));
1405 extern void fr_calc_chksum __P((fr_info_t *, mb_t *));
1406 extern ipf_stack_t *ipf_find_stack(const zoneid_t, ipf_devstate_t *);
1407 # endif
1408 extern int iplopen __P((dev_t *, int, int, cred_t *));
1409 extern int iplclose __P((dev_t, int, int, cred_t *));
1410 extern int iplread __P((dev_t, uio_t *, cred_t *));
1411 extern int iplwrite __P((dev_t, uio_t *, cred_t *));
1412 # endif
1413 # ifdef __hpux
1414 extern int iplopen __P((dev_t, int, intptr_t, int));
1415 extern int iplclose __P((dev_t, int, int));
1416 extern int iplioctl __P((dev_t, int, caddr_t, int));
1417 extern int iplread __P((dev_t, uio_t *));
1418 extern int iplwrite __P((dev_t, uio_t *));
1419 extern int iplselect __P((dev_t, int));
1420 # endif
1421 extern int ipfsync __P((ipf_stack_t *));
1422 extern int fr_qout __P((queue_t *, mblk_t *));
1423 # else /* MENTAT */
1424 extern int fr_check __P((struct ip *, int, void *, int, mb_t **, ipf_stack_t *));
1425 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **, ipf_stack_t *));
1426 extern size_t mbufchainlen __P((mb_t *));
1427 # ifdef __sgi
1428 # include <sys/cred.h>
1429 extern int iplioctl __P((dev_t, int, caddr_t, int, cred_t *, int *));
1430 extern int iplopen __P((dev_t *, int, int, cred_t *));
1431 extern int iplclose __P((dev_t, int, int, cred_t *));
1432 extern int iplread __P((dev_t, uio_t *, cred_t *));
1433 extern int iplwrite __P((dev_t, uio_t *, cred_t *));
1434 extern int ipfsync __P((ipf_stack_t *));
1435 extern int ipfilter_sgi_attach __P((void));
1436 extern void ipfilter_sgi_detach __P((void));
1437 extern void ipfilter_sgi_intfsync __P((void));
1438 # else
1439 # ifdef IPFILTER_LKM
1440 extern int iplidentify __P((char *));
1441 # endif
1442 # if (_BSDI_VERSION >= 199510) || (__FreeBSD_version >= 220000) || \
1443 (NetBSD >= 199511) || defined(__OpenBSD__)
1444 # if defined(__NetBSD__) || (_BSDI_VERSION >= 199701) || \
1445 defined(__OpenBSD__) || (__FreeBSD_version >= 300000)
1446 # if (__FreeBSD_version >= 500024)
1447 # if (__FreeBSD_version >= 502116)
1448 extern int iplioctl __P((struct cdev*, u_long, caddr_t, int, struct thread *));
1449 # else
1450 extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct thread *));
1451 # endif /* __FreeBSD_version >= 502116 */
1452 # else
1453 extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
1454 # endif /* __FreeBSD_version >= 500024 */
1455 # else
1456 extern int iplioctl __P((dev_t, int, caddr_t, int, struct proc *));
1457 # endif
1458 # if (__FreeBSD_version >= 500024)
1459 # if (__FreeBSD_version >= 502116)
1460 extern int iplopen __P((struct cdev*, int, int, struct thread *));
1461 extern int iplclose __P((struct cdev*, int, int, struct thread *));
1462 # else
1463 extern int iplopen __P((dev_t, int, int, struct thread *));
1464 extern int iplclose __P((dev_t, int, int, struct thread *));
1465 # endif /* __FreeBSD_version >= 502116 */
1466 # else
1467 extern int iplopen __P((dev_t, int, int, struct proc *));
1468 extern int iplclose __P((dev_t, int, int, struct proc *));
1469 # endif /* __FreeBSD_version >= 500024 */
1470 # else
1471 # ifdef linux
1472 extern int iplioctl __P((struct inode *, struct file *, u_int, u_long));
1473 # else
1474 extern int iplopen __P((dev_t, int));
1475 extern int iplclose __P((dev_t, int));
1476 extern int iplioctl __P((dev_t, int, caddr_t, int));
1477 # endif
1478 # endif /* (_BSDI_VERSION >= 199510) */
1479 # if BSD >= 199306
1480 # if (__FreeBSD_version >= 502116)
1481 extern int iplread __P((struct cdev*, struct uio *, int));
1482 extern int iplwrite __P((struct cdev*, struct uio *, int));
1483 # else
1484 extern int iplread __P((dev_t, struct uio *, int));
1485 extern int iplwrite __P((dev_t, struct uio *, int));
1486 # endif /* __FreeBSD_version >= 502116 */
1487 # else
1488 # ifndef linux
1489 extern int iplread __P((dev_t, struct uio *));
1490 extern int iplwrite __P((dev_t, struct uio *));
1491 # endif
1492 # endif /* BSD >= 199306 */
1493 # endif /* __ sgi */
1494 # endif /* MENTAT */
1495
1496 #endif /* #ifndef _KERNEL */
1497
1498 extern char *memstr __P((char *, char *, int, int));
1499 extern int count4bits __P((u_32_t));
1500 extern int count6bits __P((u_32_t *));
1501 extern int frrequest __P((int, ioctlcmd_t, caddr_t, int, int, ipf_stack_t *));
1502 extern char *getifname __P((struct ifnet *));
1503 extern int iplattach __P((ipf_stack_t *));
1504 extern int ipldetach __P((ipf_stack_t *));
1505 extern u_short ipf_cksum __P((u_short *, int));
1506 extern int copyinptr __P((void *, void *, size_t));
1507 extern int copyoutptr __P((void *, void *, size_t));
1508 extern int fr_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *));
1509 extern int fr_inobj __P((void *, void *, int));
1510 extern int fr_inobjsz __P((void *, void *, int, int));
1511 extern int fr_ioctlswitch __P((int, void *, ioctlcmd_t, int, int, void *,
1512 ipf_stack_t *));
1513 extern int fr_ipftune __P((ioctlcmd_t, void *, ipf_stack_t *));
1514 extern int fr_outobj __P((void *, void *, int));
1515 extern int fr_outobjsz __P((void *, void *, int, int));
1516 extern void *fr_pullup __P((mb_t *, fr_info_t *, int));
1517 extern void fr_resolvedest __P((struct frdest *, int, ipf_stack_t *));
1518 extern int fr_resolvefunc __P((void *));
1519 extern void *fr_resolvenic __P((char *, int, ipf_stack_t *));
1520 extern int fr_send_icmp_err __P((int, fr_info_t *, int));
1521 extern int fr_send_reset __P((fr_info_t *));
1522 #if (__FreeBSD_version < 490000) || !defined(_KERNEL)
1523 extern int ppsratecheck __P((struct timeval *, int *, int));
1524 #endif
1525 extern ipftq_t *fr_addtimeoutqueue __P((ipftq_t **, u_int, ipf_stack_t *));
1526 extern void fr_deletequeueentry __P((ipftqent_t *));
1527 extern int fr_deletetimeoutqueue __P((ipftq_t *));
1528 extern void fr_freetimeoutqueue __P((ipftq_t *, ipf_stack_t *));
1529 extern void fr_movequeue __P((ipftqent_t *, ipftq_t *, ipftq_t *,
1530 ipf_stack_t *));
1531 extern void fr_queueappend __P((ipftqent_t *, ipftq_t *, void *,
1532 ipf_stack_t *));
1533 extern void fr_queueback __P((ipftqent_t *, ipf_stack_t *));
1534 extern void fr_queuefront __P((ipftqent_t *));
1535 extern void fr_checkv4sum __P((fr_info_t *));
1536 extern int fr_checkl4sum __P((fr_info_t *));
1537 extern int fr_ifpfillv4addr __P((int, struct sockaddr_in *,
1538 struct sockaddr_in *, struct in_addr *,
1539 struct in_addr *));
1540 extern int fr_coalesce __P((fr_info_t *));
1541 #ifdef USE_INET6
1542 extern void fr_checkv6sum __P((fr_info_t *));
1543 extern int fr_ifpfillv6addr __P((int, struct sockaddr_in6 *,
1544 struct sockaddr_in6 *, struct in_addr *,
1545 struct in_addr *));
1546 #endif
1547
1548 #define IPFILTER_COMPAT
1549 extern int fr_incomptrans __P((ipfobj_t *, void *));
1550 extern int fr_outcomptrans __P((ipfobj_t *, void *));
1551
1552 extern int fr_addipftune __P((ipftuneable_t *, ipf_stack_t *));
1553 extern int fr_delipftune __P((ipftuneable_t *, ipf_stack_t *));
1554
1555 extern int frflush __P((minor_t, int, int, ipf_stack_t *));
1556 extern void frsync __P((int, int, void *, char *, ipf_stack_t *));
1557 #if SOLARIS2 >= 10
1558 extern void fr_ifindexsync __P((void *, void *, ipf_stack_t *));
1559 #endif
1560 extern frgroup_t *fr_addgroup __P((char *, void *, u_32_t, minor_t, int,
1561 ipf_stack_t *));
1562 extern int fr_derefrule __P((frentry_t **, ipf_stack_t *));
1563 extern void fr_delgroup __P((char *, minor_t, int, ipf_stack_t *));
1564 extern frgroup_t *fr_findgroup __P((char *, minor_t, int, frgroup_t ***,
1565 ipf_stack_t *));
1566
1567 extern int fr_loginit __P((ipf_stack_t *));
1568 extern int ipflog_clear __P((minor_t, ipf_stack_t *));
1569 extern int ipflog_read __P((minor_t, struct uio *, ipf_stack_t *));
1570 extern int ipflog __P((fr_info_t *, u_int));
1571 extern int ipllog __P((int, fr_info_t *, void **, size_t *, int *, int,
1572 ipf_stack_t *));
1573 extern void fr_logunload __P((ipf_stack_t *));
1574
1575 /* SmartOS single-FD global-zone state accumulator (see cfw.c) */
1576 extern boolean_t ipf_cfwlog_enabled;
1577 struct ipstate; /* Ugggh. */
1578 extern void ipf_log_cfwlog __P((struct ipstate *, uint_t, ipf_stack_t *));
1579 extern void ipf_block_cfwlog __P((frentry_t *, fr_info_t *, ipf_stack_t *));
1580 #define IFS_CFWLOG(ifs, fr) ((ifs)->ifs_gz_controlled && ipf_cfwlog_enabled &&\
1581 fr != NULL && ((fr)->fr_flags & FR_CFWLOG))
1582 struct cfwev_s; /* See ipf_cfw.h */
1583 extern boolean_t ipf_cfwev_consume __P((struct cfwev_s *, boolean_t));
1584 /* See cfw.c's ipf_cfwev_consume_many() for details. */
1585 typedef uint_t (*cfwmanycb_t) __P((struct cfwev_s *, uint_t, void *));
1586 extern uint_t
1587 ipf_cfwev_consume_many __P((uint_t, boolean_t, cfwmanycb_t, void *));
1588 extern int ipf_cfwlog_read __P((dev_t, struct uio *, struct cred *));
1589 extern int ipf_cfwlog_ioctl __P((dev_t, int, intptr_t, int, cred_t *, int *));
1590
1591 extern frentry_t *fr_acctpkt __P((fr_info_t *, u_32_t *));
1592 extern int fr_copytolog __P((int, char *, int));
1593 extern u_short fr_cksum __P((mb_t *, ip_t *, int, void *));
1594 extern void fr_deinitialise __P((ipf_stack_t *));
1595 extern frentry_t *fr_dolog __P((fr_info_t *, u_32_t *));
1596 extern frentry_t *fr_dstgrpmap __P((fr_info_t *, u_32_t *));
1597 extern void fr_fixskip __P((frentry_t **, frentry_t *, int));
1598 extern void fr_forgetifp __P((void *, ipf_stack_t *));
1599 extern frentry_t *fr_getrulen __P((int, char *, u_32_t,
1600 ipf_stack_t *));
1601 extern void fr_getstat __P((struct friostat *, ipf_stack_t *));
1602 extern int fr_ifpaddr __P((int, int, void *,
1603 struct in_addr *, struct in_addr *,
1604 ipf_stack_t *));
1605 extern int fr_initialise __P((ipf_stack_t *));
1606 extern int fr_lock __P((caddr_t, int *));
1607 extern int fr_makefrip __P((int, ip_t *, fr_info_t *));
1608 extern int fr_matchtag __P((ipftag_t *, ipftag_t *));
1609 extern int fr_matchicmpqueryreply __P((int, icmpinfo_t *,
1610 struct icmp *, int));
1611 extern u_32_t fr_newisn __P((fr_info_t *));
1612 extern u_short fr_nextipid __P((fr_info_t *));
1613 extern int fr_rulen __P((int, frentry_t *, ipf_stack_t *));
1614 extern int fr_scanlist __P((fr_info_t *, u_32_t));
1615 extern frentry_t *fr_srcgrpmap __P((fr_info_t *, u_32_t *));
1616 extern int fr_tcpudpchk __P((fr_info_t *, frtuc_t *));
1617 extern int fr_verifysrc __P((fr_info_t *fin));
1618 extern int fr_zerostats __P((char *, ipf_stack_t *));
1619 extern ipftoken_t *ipf_findtoken __P((int, int, void *, ipf_stack_t *));
1620 extern int ipf_getnextrule __P((ipftoken_t *, void *,
1621 ipf_stack_t *));
1622 extern void ipf_expiretokens __P((ipf_stack_t *));
1623 extern void ipf_freetoken __P((ipftoken_t *, ipf_stack_t *));
1624 extern int ipf_deltoken __P((int, int, void *, ipf_stack_t *));
1625 extern int ipf_genericiter __P((void *, int, void *, ipf_stack_t *));
1626 extern int ipf_extraflush __P((int, ipftq_t *, ipftq_t *, ipf_stack_t *));
1627 extern int ipf_flushclosing __P((int, int, ipftq_t *, ipftq_t *, ipf_stack_t *));
1628 extern int ipf_earlydrop __P((int, ipftq_t *, int, ipf_stack_t *));
1629
1630 #ifndef ipf_random
1631 extern u_32_t ipf_random __P((void));
1632 #endif
1633
1634 #if defined(_KERNEL)
1635 extern int fr_setzoneid __P((ipf_devstate_t *, void *));
1636 #endif
1637
1638 extern char ipfilter_version[];
1639 #ifdef USE_INET6
1640 extern int icmptoicmp6types[ICMP_MAXTYPE+1];
1641 extern int icmptoicmp6unreach[ICMP_MAX_UNREACH];
1642 extern int icmpreplytype6[ICMP6_MAXTYPE + 1];
1643 #endif
1644 extern int icmpreplytype4[ICMP_MAXTYPE + 1];
1645 extern frentry_t *ipfrule_match __P((fr_info_t *));
1646
1647 extern void ipftuneable_alloc(ipf_stack_t *);
1648 extern void ipftuneable_free(ipf_stack_t *);
1649
1650 #endif /* __IP_FIL_H__ */