2 * Copyright (C) 2012 by Darren Reed.
4 * See the IPFILTER.LICENCE file for details on licencing.
6 * @(#)ip_fil.h 1.35 6/5/96
8 * Id: ip_fil.h,v 2.170.2.51 2007/10/10 09:48:03 darrenr Exp $
14 #include "netinet/ip_compat.h"
15 #include "netinet/ipf_rb.h"
16 #if NETBSD_GE_REV(104040000)
17 # include <sys/callout.h>
19 #if defined(BSD) && defined(_KERNEL)
20 # if NETBSD_LT_REV(399000000) || defined(__osf__) || FREEBSD_LT_REV(500043)
21 # include <sys/select.h>
23 # include <sys/selinfo.h>
27 #if !defined(linux) || !defined(_KERNEL)
28 # include <netinet/in.h>
32 # if defined(sun) && (defined(__svr4__) || defined(__SVR4))
47 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51)
48 # define SIOCADAFR _IOW('r', 60, struct ipfobj)
49 # define SIOCRMAFR _IOW('r', 61, struct ipfobj)
50 # define SIOCSETFF _IOW('r', 62, u_int)
51 # define SIOCGETFF _IOR('r', 63, u_int)
52 # define SIOCGETFS _IOWR('r', 64, struct ipfobj)
53 # define SIOCIPFFL _IOWR('r', 65, int)
54 # define SIOCIPFFB _IOR('r', 66, int)
55 # define SIOCADIFR _IOW('r', 67, struct ipfobj)
56 # define SIOCRMIFR _IOW('r', 68, struct ipfobj)
57 # define SIOCSWAPA _IOR('r', 69, u_int)
58 # define SIOCINAFR _IOW('r', 70, struct ipfobj)
59 # define SIOCINIFR _IOW('r', 71, struct ipfobj)
60 # define SIOCFRENB _IOW('r', 72, u_int)
61 # define SIOCFRSYN _IOW('r', 73, u_int)
62 # define SIOCFRZST _IOWR('r', 74, struct ipfobj)
63 # define SIOCZRLST _IOWR('r', 75, struct ipfobj)
64 # define SIOCAUTHW _IOWR('r', 76, struct ipfobj)
65 # define SIOCAUTHR _IOWR('r', 77, struct ipfobj)
66 # define SIOCSTAT1 _IOWR('r', 78, struct ipfobj)
67 # define SIOCSTLCK _IOWR('r', 79, u_int)
68 # define SIOCSTPUT _IOWR('r', 80, struct ipfobj)
69 # define SIOCSTGET _IOWR('r', 81, struct ipfobj)
70 # define SIOCSTGSZ _IOWR('r', 82, struct ipfobj)
71 # define SIOCSTAT2 _IOWR('r', 83, struct ipfobj)
72 # define SIOCSETLG _IOWR('r', 84, int)
73 # define SIOCGETLG _IOWR('r', 85, int)
74 # define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve)
75 # define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj)
76 # define SIOCIPFGET _IOWR('r', 88, struct ipfobj)
77 # define SIOCIPFSET _IOWR('r', 89, struct ipfobj)
78 # define SIOCIPFL6 _IOWR('r', 90, int)
79 # define SIOCIPFITER _IOWR('r', 91, struct ipfobj)
80 # define SIOCGENITER _IOWR('r', 92, struct ipfobj)
81 # define SIOCGTABL _IOWR('r', 93, struct ipfobj)
82 # define SIOCIPFDELTOK _IOWR('r', 94, int)
83 # define SIOCLOOKUPITER _IOWR('r', 95, struct ipfobj)
84 # define SIOCGTQTAB _IOWR('r', 96, struct ipfobj)
85 # define SIOCMATCHFLUSH _IOWR('r', 97, struct ipfobj)
86 # define SIOCIPFINTERROR _IOR('r', 98, int)
88 # define SIOCADAFR _IOW(r, 60, struct ipfobj)
89 # define SIOCRMAFR _IOW(r, 61, struct ipfobj)
90 # define SIOCSETFF _IOW(r, 62, u_int)
91 # define SIOCGETFF _IOR(r, 63, u_int)
92 # define SIOCGETFS _IOWR(r, 64, struct ipfobj)
93 # define SIOCIPFFL _IOWR(r, 65, int)
94 # define SIOCIPFFB _IOR(r, 66, int)
95 # define SIOCADIFR _IOW(r, 67, struct ipfobj)
96 # define SIOCRMIFR _IOW(r, 68, struct ipfobj)
97 # define SIOCSWAPA _IOR(r, 69, u_int)
98 # define SIOCINAFR _IOW(r, 70, struct ipfobj)
99 # define SIOCINIFR _IOW(r, 71, struct ipfobj)
100 # define SIOCFRENB _IOW(r, 72, u_int)
101 # define SIOCFRSYN _IOW(r, 73, u_int)
102 # define SIOCFRZST _IOWR(r, 74, struct ipfobj)
103 # define SIOCZRLST _IOWR(r, 75, struct ipfobj)
104 # define SIOCAUTHW _IOWR(r, 76, struct ipfobj)
105 # define SIOCAUTHR _IOWR(r, 77, struct ipfobj)
106 # define SIOCSTAT1 _IOWR(r, 78, struct ipfobj)
107 # define SIOCSTLCK _IOWR(r, 79, u_int)
108 # define SIOCSTPUT _IOWR(r, 80, struct ipfobj)
109 # define SIOCSTGET _IOWR(r, 81, struct ipfobj)
110 # define SIOCSTGSZ _IOWR(r, 82, struct ipfobj)
111 # define SIOCSTAT2 _IOWR(r, 83, struct ipfobj)
112 # define SIOCSETLG _IOWR(r, 84, int)
113 # define SIOCGETLG _IOWR(r, 85, int)
114 # define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve)
115 # define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj)
116 # define SIOCIPFGET _IOWR(r, 88, struct ipfobj)
117 # define SIOCIPFSET _IOWR(r, 89, struct ipfobj)
118 # define SIOCIPFL6 _IOWR(r, 90, int)
119 # define SIOCIPFITER _IOWR(r, 91, struct ipfobj)
120 # define SIOCGENITER _IOWR(r, 92, struct ipfobj)
121 # define SIOCGTABL _IOWR(r, 93, struct ipfobj)
122 # define SIOCIPFDELTOK _IOWR(r, 94, int)
123 # define SIOCLOOKUPITER _IOWR(r, 95, struct ipfobj)
124 # define SIOCGTQTAB _IOWR(r, 96, struct ipfobj)
125 # define SIOCMATCHFLUSH _IOWR(r, 97, struct ipfobj)
126 # define SIOCIPFINTERROR _IOR(r, 98, int)
128 #define SIOCADDFR SIOCADAFR
129 #define SIOCDELFR SIOCRMAFR
130 #define SIOCINSFR SIOCINAFR
131 #define SIOCATHST SIOCSTAT1
132 #define SIOCGFRST SIOCSTAT2
137 struct ipf_main_softc_s;
139 typedef int (* lookupfunc_t) __P((struct ipf_main_softc_s *, void *,
140 int, void *, u_int));
143 * i6addr is used as a container for both IPv4 and IPv6 addresses, as well
144 * as other types of objects, depending on its qualifier.
147 typedef union i6addr {
152 lookupfunc_t lptr[2];
160 typedef union i6addr {
164 lookupfunc_t lptr[2];
173 #define in4_addr in4.s_addr
174 #define iplookupnum i6[1]
175 #define iplookupname i6un.name
176 #define iplookuptype i6un.type
177 #define iplookupsubtype i6un.subtype
179 * NOTE: These DO overlap the above on 64bit systems and this IS recognised.
181 #define iplookupptr vptr[0]
182 #define iplookupfunc lptr[1]
184 #define I60(x) (((u_32_t *)(x))[0])
185 #define I61(x) (((u_32_t *)(x))[1])
186 #define I62(x) (((u_32_t *)(x))[2])
187 #define I63(x) (((u_32_t *)(x))[3])
188 #define HI60(x) ntohl(((u_32_t *)(x))[0])
189 #define HI61(x) ntohl(((u_32_t *)(x))[1])
190 #define HI62(x) ntohl(((u_32_t *)(x))[2])
191 #define HI63(x) ntohl(((u_32_t *)(x))[3])
193 #define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \
194 (I61(a) == I61(b)) && (I60(a) == I60(b)))
195 #define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \
196 (I61(a) != I61(b)) || (I60(a) != I60(b)))
197 #define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0)
198 #define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0)
199 #define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \
200 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff))
201 #define IP6_GT(a,b) (ntohl(HI60(a)) > ntohl(HI60(b)) || \
202 (HI60(a) == HI60(b) && \
203 (ntohl(HI61(a)) > ntohl(HI61(b)) || \
204 (HI61(a) == HI61(b) && \
205 (ntohl(HI62(a)) > ntohl(HI62(b)) || \
206 (HI62(a) == HI62(b) && \
207 ntohl(HI63(a)) > ntohl(HI63(b))))))))
208 #define IP6_LT(a,b) (ntohl(HI60(a)) < ntohl(HI60(b)) || \
209 (HI60(a) == HI60(b) && \
210 (ntohl(HI61(a)) < ntohl(HI61(b)) || \
211 (HI61(a) == HI61(b) && \
212 (ntohl(HI62(a)) < ntohl(HI62(b)) || \
213 (HI62(a) == HI62(b) && \
214 ntohl(HI63(a)) < ntohl(HI63(b))))))))
215 #define NLADD(n,x) htonl(ntohl(n) + (x))
217 do { u_32_t *_i6 = (u_32_t *)(a); \
218 _i6[3] = NLADD(_i6[3], 1); \
220 _i6[2] = NLADD(_i6[2], 1); \
222 _i6[1] = NLADD(_i6[1], 1); \
224 _i6[0] = NLADD(_i6[0], 1); \
229 #define IP6_ADD(a,x,d) \
230 do { i6addr_t *_s = (i6addr_t *)(a); \
231 i6addr_t *_d = (i6addr_t *)(d); \
232 _d->i6[0] = NLADD(_s->i6[0], x); \
233 if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \
234 _d->i6[1] = NLADD(_d->i6[1], 1); \
235 if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \
236 _d->i6[2] = NLADD(_d->i6[2], 1); \
237 if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \
238 _d->i6[3] = NLADD(_d->i6[3], 1); \
243 #define IP6_AND(a,b,d) do { i6addr_t *_s1 = (i6addr_t *)(a); \
244 i6addr_t *_s2 = (i6addr_t *)(b); \
245 i6addr_t *_d = (i6addr_t *)(d); \
246 _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \
247 _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \
248 _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \
249 _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \
251 #define IP6_ANDASSIGN(a,m) \
252 do { i6addr_t *_d = (i6addr_t *)(a); \
253 i6addr_t *_m = (i6addr_t *)(m); \
254 _d->i6[0] &= _m->i6[0]; \
255 _d->i6[1] &= _m->i6[1]; \
256 _d->i6[2] &= _m->i6[2]; \
257 _d->i6[3] &= _m->i6[3]; \
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 do { 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]; \
279 #define IP6_MASK(a,b,c) \
280 do { i6addr_t *_d, *_s1, *_s2; \
281 _d = (i6addr_t *)(a); \
282 _s1 = (i6addr_t *)(b); \
283 _s2 = (i6addr_t *)(c); \
284 _d->i6[0] = _s1->i6[0] & ~_s2->i6[0]; \
285 _d->i6[1] = _s1->i6[1] & ~_s2->i6[1]; \
286 _d->i6[2] = _s1->i6[2] & ~_s2->i6[2]; \
287 _d->i6[3] = _s1->i6[3] & ~_s2->i6[3]; \
289 #define IP6_SETONES(a) \
290 do { i6addr_t *_d = (i6addr_t *)(a); \
291 _d->i6[0] = 0xffffffff; \
292 _d->i6[1] = 0xffffffff; \
293 _d->i6[2] = 0xffffffff; \
294 _d->i6[3] = 0xffffffff; \
297 typedef union ipso_u {
298 u_short ipso_ripso[2];
302 typedef struct fr_ip {
303 u_32_t fi_v:4; /* IP version */
304 u_32_t fi_xx:4; /* spare */
305 u_32_t fi_tos:8; /* IP packet TOS */
306 u_32_t fi_ttl:8; /* IP packet TTL */
307 u_32_t fi_p:8; /* IP packet protocol */
308 u_32_t fi_optmsk; /* bitmask composed from IP options */
309 i6addr_t fi_src; /* source address from packet */
310 i6addr_t fi_dst; /* destination address from packet */
311 ipso_t fi_ipso; /* IP security options */
312 u_32_t fi_flx; /* packet flags */
313 u_32_t fi_tcpmsk; /* TCP options set/reset */
314 u_32_t fi_ports[2]; /* TCP ports */
315 u_char fi_tcpf; /* TCP flags */
316 u_char fi_sensitivity;
317 u_char fi_xxx[2]; /* pad */
323 #define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/
324 #define FI_OPTIONS 0x0002
325 #define FI_FRAG 0x0004
326 #define FI_SHORT 0x0008
327 #define FI_NATED 0x0010
328 #define FI_MULTICAST 0x0020
329 #define FI_BROADCAST 0x0040
330 #define FI_MBCAST 0x0080
331 #define FI_STATE 0x0100
332 #define FI_BADNAT 0x0200
333 #define FI_BAD 0x0400
334 #define FI_OOW 0x0800 /* Out of state window, else match */
335 #define FI_ICMPERR 0x1000
336 #define FI_FRAGBODY 0x2000
337 #define FI_BADSRC 0x4000
338 #define FI_LOWTTL 0x8000
339 #define FI_CMP 0x5cfe3 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL */
340 #define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */
341 #define FI_WITH 0x5effe /* Not FI_TCPUDP */
342 #define FI_V6EXTHDR 0x10000
343 #define FI_COALESCE 0x20000
344 #define FI_NEWNAT 0x40000
345 #define FI_ICMPQUERY 0x80000
346 #define FI_ENCAP 0x100000 /* encap/decap with NAT */
347 #define FI_AH 0x200000 /* AH header present */
348 #define FI_DOCKSUM 0x10000000 /* Proxy wants L4 recalculation */
349 #define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */
350 #define FI_NOWILD 0x40000000 /* Do not do wildcard searches */
351 #define FI_IGNORE 0x80000000
353 #define fi_secmsk fi_ipso.ipso_ripso[0]
354 #define fi_auth fi_ipso.ipso_ripso[1]
355 #define fi_doi fi_ipso.ipso_doi
356 #define fi_saddr fi_src.in4.s_addr
357 #define fi_daddr fi_dst.in4.s_addr
358 #define fi_srcnum fi_src.iplookupnum
359 #define fi_dstnum fi_dst.iplookupnum
360 #define fi_srcname fi_src.iplookupname
361 #define fi_dstname fi_dst.iplookupname
362 #define fi_srctype fi_src.iplookuptype
363 #define fi_dsttype fi_dst.iplookuptype
364 #define fi_srcsubtype fi_src.iplookupsubtype
365 #define fi_dstsubtype fi_dst.iplookupsubtype
366 #define fi_srcptr fi_src.iplookupptr
367 #define fi_dstptr fi_dst.iplookupptr
368 #define fi_srcfunc fi_src.iplookupfunc
369 #define fi_dstfunc fi_dst.iplookupfunc
373 * These are both used by the state and NAT code to indicate that one port or
374 * the other should be treated as a wildcard.
375 * NOTE: When updating, check bit masks in ip_state.h and update there too.
377 #define SI_W_SPORT 0x00000100
378 #define SI_W_DPORT 0x00000200
379 #define SI_WILDP (SI_W_SPORT|SI_W_DPORT)
380 #define SI_W_SADDR 0x00000400
381 #define SI_W_DADDR 0x00000800
382 #define SI_WILDA (SI_W_SADDR|SI_W_DADDR)
383 #define SI_NEWFR 0x00001000
384 #define SI_CLONE 0x00002000
385 #define SI_CLONED 0x00004000
386 #define SI_NEWCLONE 0x00008000
389 u_short fda_ports[2];
390 u_char fda_tcpf; /* TCP header flags (SYN, ACK, etc) */
393 typedef enum fr_breasons_e {
404 FRB_AUTHCAPTURE = 10,
407 FRB_AUTHFEEDBACK = 13,
413 #define FRB_MAX_VALUE 16
415 typedef enum ipf_cksum_e {
423 typedef struct fr_info {
425 void *fin_ifp; /* interface packet is `on' */
426 struct frentry *fin_fr; /* last matching rule */
427 int fin_out; /* in or out ? 1 == out, 0 == in */
428 fr_ip_t fin_fi; /* IP Packet summary */
429 frdat_t fin_dat; /* TCP/UDP ports, ICMP code/type */
430 int fin_dlen; /* length of data portion of packet */
432 u_32_t fin_rule; /* rule # last matched */
433 u_short fin_hlen; /* length of IP header in bytes */
434 char fin_group[FR_GROUPLEN]; /* group number, -1 for none */
435 void *fin_dp; /* start of data past IP header */
437 * Fields after fin_dp aren't used for compression of log records.
438 * fin_fi contains the IP version (fin_family)
439 * fin_rule isn't included because adding a new rule can change it but
440 * not change fin_fr. fin_rule is the rule number reported.
441 * It isn't necessary to include fin_crc because that is checked
442 * for explicitly, before calling bcmp.
444 u_32_t fin_crc; /* Simple calculation for logging */
445 int fin_family; /* AF_INET, etc. */
446 int fin_icode; /* ICMP error to return */
447 int fin_mtu; /* MTU input for ICMP need-frag */
448 int fin_rev; /* state only: 1 = reverse */
449 int fin_ipoff; /* # bytes from buffer start to hdr */
450 u_32_t fin_id; /* IP packet id field */
451 u_short fin_l4hlen; /* length of L4 header, if known */
453 int fin_depth; /* Group nesting depth */
454 int fin_error; /* Error code to return */
455 ipf_cksum_t fin_cksum; /* -1 = bad, 1 = good, 0 = not done */
456 fr_breason_t fin_reason; /* why auto blocked */
459 struct frdest *fin_dif;
460 struct frdest *fin_tif;
467 mb_t **fin_mp; /* pointer to pointer to mbuf */
468 mb_t *fin_m; /* pointer to mbuf */
470 mb_t *fin_qfm; /* pointer to mblk where pkt starts */
472 char fin_ifname[LIFNAMSIZ];
477 void *fin_fraghdr; /* pointer to start of ipv6 frag hdr */
480 #define fin_ip fin_ipu.fip_ip
481 #define fin_ip6 fin_ipu.fip_ip6
482 #define fin_v fin_fi.fi_v
483 #define fin_p fin_fi.fi_p
484 #define fin_flx fin_fi.fi_flx
485 #define fin_optmsk fin_fi.fi_optmsk
486 #define fin_secmsk fin_fi.fi_secmsk
487 #define fin_doi fin_fi.fi_doi
488 #define fin_auth fin_fi.fi_auth
489 #define fin_src fin_fi.fi_src.in4
490 #define fin_saddr fin_fi.fi_saddr
491 #define fin_dst fin_fi.fi_dst.in4
492 #define fin_daddr fin_fi.fi_daddr
493 #define fin_data fin_fi.fi_ports
494 #define fin_sport fin_fi.fi_ports[0]
495 #define fin_dport fin_fi.fi_ports[1]
496 #define fin_tcpf fin_fi.fi_tcpf
497 #define fin_src6 fin_fi.fi_src
498 #define fin_dst6 fin_fi.fi_dst
499 #define fin_srcip6 fin_fi.fi_src.in6
500 #define fin_dstip6 fin_fi.fi_dst.in6
505 typedef struct frentry *(*ipfunc_t) __P((fr_info_t *, u_32_t *));
506 typedef int (*ipfuncinit_t) __P((struct ipf_main_softc_s *, struct frentry *));
508 typedef struct ipfunc_resolve {
511 ipfuncinit_t ipfu_init;
512 ipfuncinit_t ipfu_fini;
516 * Size for compares on fr_info structures
518 #define FI_CSIZE offsetof(fr_info_t, fin_icode)
519 #define FI_LCSIZE offsetof(fr_info_t, fin_dp)
522 * Size for copying cache fr_info structure
524 #define FI_COPYSIZE offsetof(fr_info_t, fin_dp)
527 * Structure for holding IPFilter's tag information
529 #define IPFTAG_LEN 16
533 char iptu_tag[IPFTAG_LEN];
538 #define ipt_tag ipt_un.iptu_tag
539 #define ipt_num ipt_un.iptu_num
542 * Structure to define address for pool lookups.
546 sa_family_t adf_family;
552 RBI_LINK(ipf_rb, host_node_s);
554 typedef struct host_node_s {
555 RBI_FIELD(ipf_rb) hn_entry;
556 addrfamily_t hn_addr;
560 typedef RBI_HEAD(ipf_rb, host_node_s) ipf_rb_head_t;
562 typedef struct host_track_s {
563 ipf_rb_head_t ht_root;
571 typedef enum fr_dtypes_e {
576 * This structure is used to hold information about the next hop for where
577 * to forward a packet.
579 typedef struct frdest {
581 addrfamily_t fd_addr;
587 #define fd_ip6 fd_addr.adf_addr
588 #define fd_ip fd_ip6.in4
591 typedef enum fr_ctypes_e {
605 * This structure holds information about a port comparison.
607 typedef struct frpcmp {
608 fr_ctypes_t frp_cmp; /* data for port comparisons */
609 u_32_t frp_port; /* top port for <> and >< */
610 u_32_t frp_top; /* top port for <> and >< */
615 * Structure containing all the relevant TCP things that can be checked in
618 typedef struct frtuc {
619 u_char ftu_tcpfm; /* tcp flags mask */
620 u_char ftu_tcpf; /* tcp flags */
625 #define ftu_scmp ftu_src.frp_cmp
626 #define ftu_dcmp ftu_dst.frp_cmp
627 #define ftu_sport ftu_src.frp_port
628 #define ftu_dport ftu_dst.frp_port
629 #define ftu_stop ftu_src.frp_top
630 #define ftu_dtop ftu_dst.frp_top
632 #define FR_TCPFMAX 0x3f
634 typedef enum fr_atypes_e {
635 FRI_NONE = -1, /* For LHS of NAT */
636 FRI_NORMAL = 0, /* Normal address */
637 FRI_DYNAMIC, /* dynamic address */
638 FRI_LOOKUP, /* address is a pool # */
639 FRI_RANGE, /* address/mask is a range */
640 FRI_NETWORK, /* network address from if */
641 FRI_BROADCAST, /* broadcast address from if */
642 FRI_PEERADDR, /* Peer address for P-to-P */
643 FRI_NETMASKED, /* network address with netmask from if */
644 FRI_SPLIT, /* For NAT compatibility */
645 FRI_INTERFACE /* address is based on interface name */
649 * This structure makes up what is considered to be the IPFilter specific
650 * matching components of a filter rule, as opposed to the data structures
651 * used to define the result which are in frentry_t and not here.
653 typedef struct fripf {
655 fr_ip_t fri_mip; /* mask structure */
657 u_short fri_icmpm; /* data for ICMP packets (mask) */
661 fr_atypes_t fri_satype; /* addres type */
662 fr_atypes_t fri_datype; /* addres type */
663 int fri_sifpidx; /* doing dynamic addressing */
664 int fri_difpidx; /* index into fr_ifps[] to use when */
667 #define fri_dlookup fri_mip.fi_dst
668 #define fri_slookup fri_mip.fi_src
669 #define fri_dstnum fri_mip.fi_dstnum
670 #define fri_srcnum fri_mip.fi_srcnum
671 #define fri_dstname fri_mip.fi_dstname
672 #define fri_srcname fri_mip.fi_srcname
673 #define fri_dstptr fri_mip.fi_dstptr
674 #define fri_srcptr fri_mip.fi_srcptr
677 typedef enum fr_rtypes_e {
679 FR_T_IPF, /* IPF structures */
680 FR_T_BPFOPC, /* BPF opcode */
681 FR_T_CALLFUNC, /* callout to function in fr_func only */
682 FR_T_COMPIPF, /* compiled C code */
683 FR_T_IPFEXPR, /* IPF expression */
684 FR_T_BUILTIN = 0x40000000, /* rule is in kernel space */
687 FR_T_CALLFUNC_BUILTIN,
688 FR_T_COMPIPF_BUILTIN,
692 typedef struct frentry * (* frentfunc_t) __P((fr_info_t *));
694 typedef struct frentry {
696 struct frentry *fr_next;
697 struct frentry **fr_pnext;
698 struct frgroup *fr_grp;
699 struct frgroup *fr_grphead;
700 struct frgroup *fr_icmpgrp;
701 struct ipscan *fr_isc;
702 struct frentry *fr_dnext; /* 2 fr_die linked list pointers */
703 struct frentry **fr_pdnext;
705 void *fr_ptr; /* for use with fr_arg */
706 int fr_comment; /* text comment for rule */
707 int fr_size; /* size of this structure */
708 int fr_ref; /* reference count */
709 int fr_statecnt; /* state count - for limit rules */
710 u_32_t fr_die; /* only used on loading the rule */
711 u_int fr_cksum; /* checksum on filter rules for performance */
713 * The line number from a file is here because we need to be able to
714 * match the rule generated with ``grep rule ipf.conf | ipf -rf -''
715 * with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be
716 * on the other side of fr_func.
718 int fr_flineno; /* line number from conf file */
720 * These are only incremented when a packet matches this rule and
721 * it is the last match
727 * For PPS rate limiting
728 * fr_lpu is used to always have the same size for this field,
729 * allocating 64bits for seconds and 32bits for milliseconds.
732 struct timeval frp_lastpkt;
741 frentfunc_t fru_func;
745 * Fields after this may not change whilst in the kernel.
747 ipfunc_t fr_func; /* call this function */
751 u_32_t fr_flags; /* per-rule flags && options (see below) */
752 u_32_t fr_logtag; /* user defined log tag # */
753 u_32_t fr_collect; /* collection number */
754 u_int fr_arg; /* misc. numeric arg for rule */
755 u_int fr_loglevel; /* syslog log facility + priority */
757 u_char fr_icode; /* return ICMP code */
758 int fr_group; /* group to which this rule belongs */
759 int fr_grhead; /* group # which this rule starts */
762 int fr_rpc; /* XID Filtering */
764 frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */
765 frdest_t fr_dif; /* duplicate packet interface */
767 * These are all options related to stateful filtering
769 host_track_t fr_srctrack;
771 int fr_statemax; /* max reference count */
772 int fr_icmphead; /* ICMP group for state options */
773 u_int fr_age[2]; /* non-TCP state timeouts */
775 * How big is the name buffer at the end?
781 #define fr_lastpkt fr_lpu.frp_lastpkt
782 #define fr_caddr fr_dun.fru_caddr
783 #define fr_data fr_dun.fru_data
784 #define fr_dfunc fr_dun.fru_func
785 #define fr_ipf fr_dun.fru_ipf
786 #define fr_ip fr_ipf->fri_ip
787 #define fr_mip fr_ipf->fri_mip
788 #define fr_icmpm fr_ipf->fri_icmpm
789 #define fr_icmp fr_ipf->fri_icmp
790 #define fr_tuc fr_ipf->fri_tuc
791 #define fr_satype fr_ipf->fri_satype
792 #define fr_datype fr_ipf->fri_datype
793 #define fr_sifpidx fr_ipf->fri_sifpidx
794 #define fr_difpidx fr_ipf->fri_difpidx
795 #define fr_proto fr_ip.fi_p
796 #define fr_mproto fr_mip.fi_p
797 #define fr_ttl fr_ip.fi_ttl
798 #define fr_mttl fr_mip.fi_ttl
799 #define fr_tos fr_ip.fi_tos
800 #define fr_mtos fr_mip.fi_tos
801 #define fr_tcpfm fr_tuc.ftu_tcpfm
802 #define fr_tcpf fr_tuc.ftu_tcpf
803 #define fr_scmp fr_tuc.ftu_scmp
804 #define fr_dcmp fr_tuc.ftu_dcmp
805 #define fr_dport fr_tuc.ftu_dport
806 #define fr_sport fr_tuc.ftu_sport
807 #define fr_stop fr_tuc.ftu_stop
808 #define fr_dtop fr_tuc.ftu_dtop
809 #define fr_dst fr_ip.fi_dst.in4
810 #define fr_dst6 fr_ip.fi_dst
811 #define fr_daddr fr_ip.fi_dst.in4.s_addr
812 #define fr_src fr_ip.fi_src.in4
813 #define fr_src6 fr_ip.fi_src
814 #define fr_saddr fr_ip.fi_src.in4.s_addr
815 #define fr_dmsk fr_mip.fi_dst.in4
816 #define fr_dmsk6 fr_mip.fi_dst
817 #define fr_dmask fr_mip.fi_dst.in4.s_addr
818 #define fr_smsk fr_mip.fi_src.in4
819 #define fr_smsk6 fr_mip.fi_src
820 #define fr_smask fr_mip.fi_src.in4.s_addr
821 #define fr_dstnum fr_ip.fi_dstnum
822 #define fr_srcnum fr_ip.fi_srcnum
823 #define fr_dlookup fr_ip.fi_dst
824 #define fr_slookup fr_ip.fi_src
825 #define fr_dstname fr_ip.fi_dstname
826 #define fr_srcname fr_ip.fi_srcname
827 #define fr_dsttype fr_ip.fi_dsttype
828 #define fr_srctype fr_ip.fi_srctype
829 #define fr_dstsubtype fr_ip.fi_dstsubtype
830 #define fr_srcsubtype fr_ip.fi_srcsubtype
831 #define fr_dstptr fr_mip.fi_dstptr
832 #define fr_srcptr fr_mip.fi_srcptr
833 #define fr_dstfunc fr_mip.fi_dstfunc
834 #define fr_srcfunc fr_mip.fi_srcfunc
835 #define fr_optbits fr_ip.fi_optmsk
836 #define fr_optmask fr_mip.fi_optmsk
837 #define fr_secbits fr_ip.fi_secmsk
838 #define fr_secmask fr_mip.fi_secmsk
839 #define fr_authbits fr_ip.fi_auth
840 #define fr_authmask fr_mip.fi_auth
841 #define fr_doi fr_ip.fi_doi
842 #define fr_doimask fr_mip.fi_doi
843 #define fr_flx fr_ip.fi_flx
844 #define fr_mflx fr_mip.fi_flx
845 #define fr_ifa fr_ifas[0]
846 #define fr_oifa fr_ifas[2]
847 #define fr_tif fr_tifs[0]
848 #define fr_rif fr_tifs[1]
850 #define FR_NOLOGTAG 0
852 #define FR_CMPSIZ (sizeof(struct frentry) - \
853 offsetof(struct frentry, fr_func))
854 #define FR_NAME(_f, _n) (_f)->fr_names + (_f)->_n
860 #define FR_BLOCK 0x00001 /* do not allow packet to pass */
861 #define FR_PASS 0x00002 /* allow packet to pass */
862 #define FR_AUTH 0x00003 /* use authentication */
863 #define FR_PREAUTH 0x00004 /* require preauthentication */
864 #define FR_ACCOUNT 0x00005 /* Accounting rule */
865 #define FR_SKIP 0x00006 /* skip rule */
866 #define FR_DECAPSULATE 0x00008 /* decapsulate rule */
867 #define FR_CALL 0x00009 /* call rule */
868 #define FR_CMDMASK 0x0000f
869 #define FR_LOG 0x00010 /* Log */
870 #define FR_LOGB 0x00011 /* Log-fail */
871 #define FR_LOGP 0x00012 /* Log-pass */
872 #define FR_LOGMASK (FR_LOG|FR_CMDMASK)
873 #define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */
874 #define FR_NOTSRCIP 0x00040
875 #define FR_NOTDSTIP 0x00080
876 #define FR_QUICK 0x00100 /* match & stop processing list */
877 #define FR_KEEPFRAG 0x00200 /* keep fragment information */
878 #define FR_KEEPSTATE 0x00400 /* keep `connection' state information */
879 #define FR_FASTROUTE 0x00800 /* bypass normal routing */
880 #define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */
881 #define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */
882 #define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */
883 #define FR_OUTQUE 0x04000 /* outgoing packets */
884 #define FR_INQUE 0x08000 /* ingoing packets */
885 #define FR_LOGBODY 0x10000 /* Log the body */
886 #define FR_LOGFIRST 0x20000 /* Log the first byte if state held */
887 #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */
888 #define FR_STLOOSE 0x80000 /* loose state checking */
889 #define FR_FRSTRICT 0x100000 /* strict frag. cache */
890 #define FR_STSTRICT 0x200000 /* strict keep state */
891 #define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */
892 #define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */
893 #define FR_STATESYNC 0x1000000 /* synchronize state to slave */
894 #define FR_COPIED 0x2000000 /* copied from user space */
895 #define FR_INACTIVE 0x4000000 /* only used when flush'ing rules */
896 #define FR_NOMATCH 0x8000000 /* no match occured */
897 /* 0x10000000 FF_LOGPASS */
898 /* 0x20000000 FF_LOGBLOCK */
899 /* 0x40000000 FF_LOGNOMATCH */
900 /* 0x80000000 FF_BLOCKNONIP */
902 #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP)
903 #define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK)
904 #define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS)
905 #define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH)
906 #define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH)
907 #define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT)
908 #define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP)
909 #define FR_ISDECAPS(x) (((x) & FR_CMDMASK) == FR_DECAPSULATE)
910 #define FR_ISNOMATCH(x) ((x) & FR_NOMATCH)
911 #define FR_INOUT (FR_INQUE|FR_OUTQUE)
914 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
916 #define FF_LOGPASS 0x10000000
917 #define FF_LOGBLOCK 0x20000000
918 #define FF_LOGNOMATCH 0x40000000
919 #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
920 #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */
924 * Structure that passes information on what/how to flush to the kernel.
926 typedef struct ipfflush {
935 typedef struct ipfgetctl {
936 u_int ipfg_min; /* min value */
937 u_int ipfg_current; /* current value */
938 u_int ipfg_max; /* max value */
939 u_int ipfg_default; /* default value */
940 u_int ipfg_steps; /* value increments */
941 char ipfg_name[40]; /* tag name for this control */
944 typedef struct ipfsetctl {
945 int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */
946 u_int ipfs_value; /* min value */
947 char ipfs_name[40]; /* tag name for this control */
952 * Some of the statistics below are in their own counters, but most are kept
953 * in this single structure so that they can all easily be collected and
954 * copied back as required.
956 typedef struct ipf_statistics {
957 u_long fr_icmp_coalesce;
959 u_long fr_tcp_pullup;
962 u_long fr_tcp_bad_flags;
963 u_long fr_udp_pullup;
967 u_long fr_v6_badfrag;
968 u_long fr_v6_dst_bad;
969 u_long fr_v6_esp_pullup;
970 u_long fr_v6_ext_short;
971 u_long fr_v6_ext_pullup;
972 u_long fr_v6_ext_hlen;
973 u_long fr_v6_frag_bad;
974 u_long fr_v6_frag_pullup;
975 u_long fr_v6_frag_size;
976 u_long fr_v6_gre_pullup;
977 u_long fr_v6_icmp6_pullup;
979 u_long fr_v6_badttl; /* TTL in packet doesn't reach minimum */
981 u_long fr_v4_ah_pullup;
982 u_long fr_v4_esp_pullup;
983 u_long fr_v4_cipso_bad;
984 u_long fr_v4_cipso_tlen;
985 u_long fr_v4_gre_frag;
986 u_long fr_v4_gre_pullup;
987 u_long fr_v4_icmp_frag;
988 u_long fr_v4_icmp_pullup;
989 u_long fr_v4_badttl; /* TTL in packet doesn't reach minimum */
990 u_long fr_v4_badsrc; /* source received doesn't match route */
991 u_long fr_l4_badcksum; /* layer 4 header checksum failure */
992 u_long fr_badcoalesces;
993 u_long fr_pass; /* packets allowed */
994 u_long fr_block; /* packets denied */
995 u_long fr_nom; /* packets which don't match any rule */
996 u_long fr_short; /* packets which are short */
997 u_long fr_ppkl; /* packets allowed and logged */
998 u_long fr_bpkl; /* packets denied and logged */
999 u_long fr_npkl; /* packets unmatched and logged */
1000 u_long fr_ret; /* packets for which a return is sent */
1001 u_long fr_acct; /* packets for which counting was performed */
1002 u_long fr_bnfr; /* bad attempts to allocate fragment state */
1003 u_long fr_nfr; /* new fragment state kept */
1004 u_long fr_cfr; /* add new fragment state but complete pkt */
1005 u_long fr_bads; /* bad attempts to allocate packet state */
1006 u_long fr_ads; /* new packet state kept */
1007 u_long fr_chit; /* cached hit */
1008 u_long fr_cmiss; /* cached miss */
1009 u_long fr_tcpbad; /* TCP checksum check failures */
1010 u_long fr_pull[2]; /* good and bad pullup attempts */
1011 u_long fr_bad; /* bad IP packets to the filter */
1012 u_long fr_ipv6; /* IPv6 packets in/out */
1013 u_long fr_ppshit; /* dropped because of pps ceiling */
1014 u_long fr_ipud; /* IP id update failures */
1015 u_long fr_blocked[FRB_MAX_VALUE + 1];
1019 * Log structure. Each packet header logged is prepended by one of these.
1020 * Following this in the log records read from the device will be an ipflog
1021 * structure which is then followed by any packet data.
1023 typedef struct iplog {
1027 struct timeval ipl_time;
1029 struct iplog *ipl_next;
1032 #define ipl_sec ipl_time.tv_sec
1033 #define ipl_usec ipl_time.tv_usec
1035 #define IPL_MAGIC 0x49504c4d /* 'IPLM' */
1036 #define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */
1037 #define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */
1038 #define IPLOG_SIZE sizeof(iplog_t)
1040 typedef struct ipflog {
1041 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
1042 (defined(OpenBSD) && (OpenBSD >= 199603))
1051 u_short fl_plen; /* extra data after hlen */
1052 u_short fl_loglevel; /* syslog log level */
1053 char fl_group[FR_GROUPLEN];
1054 u_char fl_hlen; /* length of IP headers saved */
1056 u_char fl_breason; /* from fin_reason */
1057 u_char fl_family; /* address family of packet logged */
1058 char fl_ifname[LIFNAMSIZ];
1062 # define IPF_LOGGING 0
1064 #ifndef IPF_DEFAULT_PASS
1065 # define IPF_DEFAULT_PASS FR_PASS
1068 #define DEFAULT_IPFLOGSIZE 32768
1069 #ifndef IPFILTER_LOGSIZE
1070 # define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE
1072 # if IPFILTER_LOGSIZE < 8192
1073 # error IPFILTER_LOGSIZE too small. Must be >= 8192
1077 #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */
1080 * Device filenames for reading log information. Use ipf on Solaris2 because
1081 * ipl is already a name used by something else.
1085 # define IPL_NAME "/dev/ipf"
1087 # define IPL_NAME "/dev/ipl"
1091 * Pathnames for various IP Filter control devices. Used by LKM
1092 * and userland, so defined here.
1094 #define IPNAT_NAME "/dev/ipnat"
1095 #define IPSTATE_NAME "/dev/ipstate"
1096 #define IPAUTH_NAME "/dev/ipauth"
1097 #define IPSYNC_NAME "/dev/ipsync"
1098 #define IPSCAN_NAME "/dev/ipscan"
1099 #define IPLOOKUP_NAME "/dev/iplookup"
1101 #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */
1102 #define IPL_LOGNAT 1
1103 #define IPL_LOGSTATE 2
1104 #define IPL_LOGAUTH 3
1105 #define IPL_LOGSYNC 4
1106 #define IPL_LOGSCAN 5
1107 #define IPL_LOGLOOKUP 6
1108 #define IPL_LOGCOUNT 7
1109 #define IPL_LOGMAX 7
1110 #define IPL_LOGSIZE IPL_LOGMAX + 1
1111 #define IPL_LOGALL -1
1112 #define IPL_LOGNONE -2
1117 typedef struct friostat {
1118 ipf_statistics_t f_st[2];
1119 frentry_t *f_ipf[2][2];
1120 frentry_t *f_acct[2][2];
1122 struct frgroup *f_groups[IPL_LOGSIZE][2];
1127 u_long f_rb_node_max;
1129 int f_locks[IPL_LOGSIZE];
1130 int f_defpass; /* default pass - from fr_pass */
1131 int f_active; /* 1 or 0 - active rule set */
1132 int f_running; /* 1 if running, else 0 */
1133 int f_logging; /* 1 if enabled, else 0 */
1135 char f_version[32]; /* version string */
1138 #define f_fin f_ipf[0]
1139 #define f_fout f_ipf[1]
1140 #define f_acctin f_acct[0]
1141 #define f_acctout f_acct[1]
1143 #define IPF_FEAT_LKM 0x001
1144 #define IPF_FEAT_LOG 0x002
1145 #define IPF_FEAT_LOOKUP 0x004
1146 #define IPF_FEAT_BPF 0x008
1147 #define IPF_FEAT_COMPILED 0x010
1148 #define IPF_FEAT_CKSUM 0x020
1149 #define IPF_FEAT_SYNC 0x040
1150 #define IPF_FEAT_SCAN 0x080
1151 #define IPF_FEAT_IPV6 0x100
1153 typedef struct optlist {
1160 * Group list structure.
1162 typedef struct frgroup {
1163 struct frgroup *fg_next;
1164 struct frentry *fg_head;
1165 struct frentry *fg_start;
1166 struct frgroup **fg_set;
1169 char fg_name[FR_GROUPLEN];
1172 #define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name)
1176 * Used by state and NAT tables
1178 typedef struct icmpinfo {
1184 typedef struct udpinfo {
1190 typedef struct tcpdata {
1199 #define TCP_WSCALE_MAX 14
1201 #define TCP_WSCALE_SEEN 0x00000001
1202 #define TCP_WSCALE_FIRST 0x00000002
1203 #define TCP_SACK_PERMIT 0x00000004
1206 typedef struct tcpinfo {
1209 tcpdata_t ts_data[2];
1214 * Structures to define a GRE header as seen in a packet.
1241 typedef struct grehdr {
1243 struct grebits gru_bits;
1250 #define gr_flags gr_un.gru_flags
1251 #define gr_bits gr_un.gru_bits
1252 #define gr_ptype gr_bits.grb_ptype
1253 #define gr_C gr_bits.grb_C
1254 #define gr_R gr_bits.grb_R
1255 #define gr_K gr_bits.grb_K
1256 #define gr_S gr_bits.grb_S
1257 #define gr_s gr_bits.grb_s
1258 #define gr_recur gr_bits.grb_recur
1259 #define gr_A gr_bits.grb_A
1260 #define gr_ver gr_bits.grb_ver
1263 * GRE information tracked by "keep state"
1265 typedef struct greinfo {
1271 #define GRE_REV(x) ((ntohs(x) >> 13) & 7)
1275 * Format of an Authentication header
1277 typedef struct authhdr {
1280 u_short ah_reserved;
1283 /* Following the sequence number field is 0 or more bytes of */
1284 /* authentication data, as specified by ah_plen - RFC 2402. */
1289 * Timeout tail queue list member
1291 typedef struct ipftqent {
1292 struct ipftqent **tqe_pnext;
1293 struct ipftqent *tqe_next;
1294 struct ipftq *tqe_ifq;
1295 void *tqe_parent; /* pointer back to NAT/state struct */
1296 u_32_t tqe_die; /* when this entriy is to die */
1299 int tqe_state[2]; /* current state of this entry */
1302 #define TQE_RULEBASED 0x00000001
1303 #define TQE_DELETE 0x00000002
1307 * Timeout tail queue head for IPFilter
1309 typedef struct ipftq {
1310 ipfmutex_t ifq_lock;
1312 ipftqent_t *ifq_head;
1313 ipftqent_t **ifq_tail;
1314 struct ipftq *ifq_next;
1315 struct ipftq **ifq_pnext;
1320 #define IFQF_USER 0x01 /* User defined aging */
1321 #define IFQF_DELETE 0x02 /* Marked for deletion */
1322 #define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */
1324 #define IPFTQ_INIT(x,y,z) do { \
1325 (x)->ifq_ttl = (y); \
1326 (x)->ifq_head = NULL; \
1328 (x)->ifq_tail = &(x)->ifq_head; \
1329 MUTEX_INIT(&(x)->ifq_lock, (z)); \
1332 #define IPF_HZ_MULT 1
1333 #define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */
1334 /* checks its timeout queues. */
1335 #define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE)
1337 typedef int (*ipftq_delete_fn_t)(struct ipf_main_softc_s *, void *);
1341 * Object structure description. For passing through in ioctls.
1343 typedef struct ipfobj {
1344 u_32_t ipfo_rev; /* IPFilter version number */
1345 u_32_t ipfo_size; /* size of object at ipfo_ptr */
1346 void *ipfo_ptr; /* pointer to object */
1347 int ipfo_type; /* type of object being pointed to */
1348 int ipfo_offset; /* bytes from ipfo_ptr where to start */
1349 int ipfo_retval; /* return value */
1350 u_char ipfo_xxxpad[28]; /* reserved for future use */
1353 #define IPFOBJ_FRENTRY 0 /* struct frentry */
1354 #define IPFOBJ_IPFSTAT 1 /* struct friostat */
1355 #define IPFOBJ_IPFINFO 2 /* struct fr_info */
1356 #define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */
1357 #define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */
1358 #define IPFOBJ_IPNAT 5 /* struct ipnat */
1359 #define IPFOBJ_NATSTAT 6 /* struct natstat */
1360 #define IPFOBJ_STATESAVE 7 /* struct ipstate_save */
1361 #define IPFOBJ_NATSAVE 8 /* struct nat_save */
1362 #define IPFOBJ_NATLOOKUP 9 /* struct natlookup */
1363 #define IPFOBJ_IPSTATE 10 /* struct ipstate */
1364 #define IPFOBJ_STATESTAT 11 /* struct ips_stat */
1365 #define IPFOBJ_FRAUTH 12 /* struct frauth */
1366 #define IPFOBJ_TUNEABLE 13 /* struct ipftune */
1367 #define IPFOBJ_NAT 14 /* struct nat */
1368 #define IPFOBJ_IPFITER 15 /* struct ipfruleiter */
1369 #define IPFOBJ_GENITER 16 /* struct ipfgeniter */
1370 #define IPFOBJ_GTABLE 17 /* struct ipftable */
1371 #define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */
1372 #define IPFOBJ_STATETQTAB 19 /* struct ipftq * NSTATES */
1373 #define IPFOBJ_IPFEXPR 20
1374 #define IPFOBJ_PROXYCTL 21 /* strct ap_ctl */
1375 #define IPFOBJ_FRIPF 22 /* structfripf */
1376 #define IPFOBJ_COUNT 23 /* How many #defines are above this? */
1379 typedef union ipftunevalptr {
1383 u_short *ipftp_short;
1385 u_long ipftp_offset;
1388 typedef union ipftuneval {
1391 u_short ipftu_short;
1396 typedef int (* ipftunefunc_t) __P((struct ipf_main_softc_s *, struct ipftuneable *, ipftuneval_t *));
1398 typedef struct ipftuneable {
1399 ipftunevalptr_t ipft_una;
1400 const char *ipft_name;
1405 struct ipftuneable *ipft_next;
1406 ipftunefunc_t ipft_func;
1409 #define ipft_addr ipft_una.ipftp_void
1410 #define ipft_plong ipft_una.ipftp_long
1411 #define ipft_pint ipft_una.ipftp_int
1412 #define ipft_pshort ipft_una.ipftp_short
1413 #define ipft_pchar ipft_una.ipftp_char
1415 #define IPFT_RDONLY 1 /* read-only */
1416 #define IPFT_WRDISABLED 2 /* write when disabled only */
1418 typedef struct ipftune {
1420 ipftuneval_t ipft_un;
1428 #define ipft_vlong ipft_un.ipftu_long
1429 #define ipft_vint ipft_un.ipftu_int
1430 #define ipft_vshort ipft_un.ipftu_short
1431 #define ipft_vchar ipft_un.ipftu_char
1436 #define IPFHASH(x,y) typedef struct { \
1437 ipfrwlock_t ipfh_lock; \
1438 struct x *ipfh_head; \
1445 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */
1446 # define IPF_SMAJ 0 /* temp assignment XXX, not critical */
1449 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
1450 (__FreeBSD_version >= 220000)
1451 # define CDEV_MAJOR 79
1455 * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns
1456 * on those hooks. We don't need any special mods in non-IP Filter code
1459 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
1460 (defined(NetBSD1_2) && NetBSD1_2 > 1) || \
1461 (defined(__FreeBSD__) && (__FreeBSD_version >= 500043))
1462 # if (defined(NetBSD) && NetBSD >= 199905)
1471 # define FR_VERBOSE(verb_pr)
1472 # define FR_DEBUG(verb_pr)
1474 extern void ipfkdebug __P((char *, ...));
1475 extern void ipfkverbose __P((char *, ...));
1476 # define FR_VERBOSE(verb_pr) ipfkverbose verb_pr
1477 # define FR_DEBUG(verb_pr) ipfkdebug verb_pr
1483 typedef struct ipfruleiter {
1485 char iri_group[FR_GROUPLEN];
1488 int iri_v; /* No longer used (compatibility) */
1489 frentry_t *iri_rule;
1493 * Values for iri_inout
1501 typedef struct ipfgeniter {
1507 #define IPFGENITER_IPF 0
1508 #define IPFGENITER_NAT 1
1509 #define IPFGENITER_IPNAT 2
1510 #define IPFGENITER_FRAG 3
1511 #define IPFGENITER_AUTH 4
1512 #define IPFGENITER_STATE 5
1513 #define IPFGENITER_NATFRAG 6
1514 #define IPFGENITER_HOSTMAP 7
1515 #define IPFGENITER_LOOKUP 8
1517 typedef struct ipftable {
1522 #define IPFTABLE_BUCKETS 1
1523 #define IPFTABLE_BUCKETS_NATIN 2
1524 #define IPFTABLE_BUCKETS_NATOUT 3
1527 typedef struct ipf_v4_masktab_s {
1528 u_32_t imt4_active[33];
1533 typedef struct ipf_v6_masktab_s {
1534 i6addr_t imt6_active[129];
1535 int imt6_masks[129];
1543 typedef struct ipftoken {
1544 struct ipftoken *ipt_next;
1545 struct ipftoken **ipt_pnext;
1560 typedef struct ipfexp {
1569 * Currently support commands (ipfe_cmd)
1570 * 32bits is split up follows:
1572 * aa = 0 = packet matching, 1 = meta data matching
1573 * bb = IP protocol number
1576 #define IPF_EXP_IP_PR 0x00000001
1577 #define IPF_EXP_IP_ADDR 0x00000002
1578 #define IPF_EXP_IP_SRCADDR 0x00000003
1579 #define IPF_EXP_IP_DSTADDR 0x00000004
1580 #define IPF_EXP_IP6_ADDR 0x00000005
1581 #define IPF_EXP_IP6_SRCADDR 0x00000006
1582 #define IPF_EXP_IP6_DSTADDR 0x00000007
1583 #define IPF_EXP_TCP_FLAGS 0x00060001
1584 #define IPF_EXP_TCP_PORT 0x00060002
1585 #define IPF_EXP_TCP_SPORT 0x00060003
1586 #define IPF_EXP_TCP_DPORT 0x00060004
1587 #define IPF_EXP_UDP_PORT 0x00110002
1588 #define IPF_EXP_UDP_SPORT 0x00110003
1589 #define IPF_EXP_UDP_DPORT 0x00110004
1590 #define IPF_EXP_IDLE_GT 0x01000001
1591 #define IPF_EXP_TCP_STATE 0x01060002
1592 #define IPF_EXP_END 0xffffffff
1594 #define ONE_DAY IPF_TTLVAL(1 * 86400) /* 1 day */
1595 #define FIVE_DAYS (5 * ONE_DAY)
1597 typedef struct ipf_main_softc_s {
1598 struct ipf_main_softc_s *ipf_next;
1600 ipfmutex_t ipf_timeoutlock;
1601 ipfrwlock_t ipf_mutex;
1602 ipfrwlock_t ipf_frag;
1603 ipfrwlock_t ipf_global;
1604 ipfrwlock_t ipf_tokens;
1605 ipfrwlock_t ipf_state;
1606 ipfrwlock_t ipf_nat;
1607 ipfrwlock_t ipf_natfrag;
1608 ipfrwlock_t ipf_poolrw;
1609 int ipf_dynamic_softc;
1614 int ipf_control_forwarding;
1615 int ipf_update_ipid;
1616 int ipf_chksrc; /* causes a system crash if enabled */
1619 int ipf_icmpminfragmtu;
1620 int ipf_interror; /* Should be in a struct that is per */
1621 /* thread or process. Does not belong */
1622 /* here but there's a lot more work */
1623 /* in doing that properly. For now, */
1624 /* it is squatting. */
1625 u_int ipf_tcpidletimeout;
1626 u_int ipf_tcpclosewait;
1627 u_int ipf_tcplastack;
1628 u_int ipf_tcptimewait;
1629 u_int ipf_tcptimeout;
1630 u_int ipf_tcpsynsent;
1631 u_int ipf_tcpsynrecv;
1632 u_int ipf_tcpclosed;
1633 u_int ipf_tcphalfclosed;
1634 u_int ipf_udptimeout;
1635 u_int ipf_udpacktimeout;
1636 u_int ipf_icmptimeout;
1637 u_int ipf_icmpacktimeout;
1638 u_int ipf_iptimeout;
1640 u_long ipf_userifqs;
1641 u_long ipf_rb_no_mem;
1642 u_long ipf_rb_node_max;
1643 u_long ipf_frouteok[2];
1644 ipftuneable_t *ipf_tuners;
1645 void *ipf_frag_soft;
1647 void *ipf_state_soft;
1648 void *ipf_auth_soft;
1649 void *ipf_proxy_soft;
1650 void *ipf_sync_soft;
1651 void *ipf_lookup_soft;
1653 struct frgroup *ipf_groups[IPL_LOGSIZE][2];
1654 frentry_t *ipf_rules[2][2];
1655 frentry_t *ipf_acct[2][2];
1656 frentry_t *ipf_rule_explist[2];
1657 ipftoken_t *ipf_token_head;
1658 ipftoken_t **ipf_token_tail;
1659 #if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) && \
1661 struct callout ipf_slow_ch;
1663 #if defined(linux) && defined(_KERNEL)
1664 struct timer_list ipf_timer;
1666 #if NETBSD_GE_REV(104040000)
1667 struct callout ipf_slow_ch;
1671 timeout_id_t ipf_slow_ch;
1676 #if defined(_KERNEL)
1678 struct pollhead ipf_poll_head[IPL_LOGSIZE];
1680 # if defined(INSTANCES)
1681 int ipf_get_loopback;
1683 net_handle_t ipf_nd_v4;
1684 net_handle_t ipf_nd_v6;
1685 hook_t *ipf_hk_v4_in;
1686 hook_t *ipf_hk_v4_out;
1687 hook_t *ipf_hk_v4_nic;
1688 hook_t *ipf_hk_v6_in;
1689 hook_t *ipf_hk_v6_out;
1690 hook_t *ipf_hk_v6_nic;
1691 hook_t *ipf_hk_loop_v4_in;
1692 hook_t *ipf_hk_loop_v4_out;
1693 hook_t *ipf_hk_loop_v6_in;
1694 hook_t *ipf_hk_loop_v6_out;
1697 # if defined(linux) && defined(_KERNEL)
1698 struct poll_table_struct ipf_selwait[IPL_LOGSIZE];
1699 wait_queue_head_t iplh_linux[IPL_LOGSIZE];
1701 struct selinfo ipf_selwait[IPL_LOGSIZE];
1706 ipf_statistics_t ipf_stats[2];
1707 u_char ipf_iss_secret[32];
1711 #define IPFERROR(_e) do { softc->ipf_interror = (_e); \
1712 DT1(user_error, int, _e); \
1716 extern int ipf_check __P((void *, struct ip *, int, void *, int, mb_t **));
1717 extern int (*ipf_checkp) __P((ip_t *, int, void *, int, mb_t **));
1718 extern struct ifnet *get_unit __P((char *, int));
1719 extern char *get_ifname __P((struct ifnet *));
1720 extern int ipfioctl __P((ipf_main_softc_t *, int, ioctlcmd_t,
1722 extern void m_freem __P((mb_t *));
1723 extern size_t msgdsize __P((mb_t *));
1724 extern int bcopywrap __P((void *, void *, size_t));
1725 #else /* #ifndef _KERNEL */
1726 # if defined(__NetBSD__) && defined(PFIL_HOOKS)
1727 extern void ipfilterattach __P((int));
1729 extern int ipl_enable __P((void));
1730 extern int ipl_disable __P((void));
1732 extern int ipf_check __P((void *, struct ip *, int, void *, int, void *,
1735 extern void ipf_prependmbt(fr_info_t *, mblk_t *);
1737 extern int ipfioctl __P((dev_t, int, intptr_t, int, cred_t *, int *));
1739 extern int ipfioctl __P((dev_t, int, int *, int, cred_t *, int *));
1743 extern int ipfioctl __P((dev_t, int, caddr_t, int));
1744 extern int ipf_select __P((dev_t, int));
1746 extern int ipf_qout __P((queue_t *, mblk_t *));
1748 extern int ipf_check __P((void *, struct ip *, int, void *, int, mb_t **));
1749 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **));
1750 extern size_t mbufchainlen __P((mb_t *));
1752 # include <sys/cred.h>
1753 extern int ipfioctl __P((dev_t, int, caddr_t, int, cred_t *, int *));
1754 extern int ipfilter_sgi_attach __P((void));
1755 extern void ipfilter_sgi_detach __P((void));
1756 extern void ipfilter_sgi_intfsync __P((void));
1758 # ifdef IPFILTER_LKM
1759 extern int ipf_identify __P((char *));
1761 # if BSDOS_GE_REV(199510) || FREEBSD_GE_REV(220000) || \
1762 (defined(NetBSD) && (NetBSD >= 199511)) || defined(__OpenBSD__)
1763 # if defined(__NetBSD__) || BSDOS_GE_REV(199701) || \
1764 defined(__OpenBSD__) || FREEBSD_GE_REV(300000)
1765 # if (__FreeBSD_version >= 500024)
1766 # if (__FreeBSD_version >= 502116)
1767 extern int ipfioctl __P((struct cdev*, u_long, caddr_t, int, struct thread *));
1769 extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct thread *));
1770 # endif /* __FreeBSD_version >= 502116 */
1772 # if NETBSD_GE_REV(499001000)
1773 extern int ipfioctl __P((dev_t, u_long, void *, int, struct lwp *));
1775 # if NETBSD_GE_REV(399001400)
1776 extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct lwp *));
1778 extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
1781 # endif /* __FreeBSD_version >= 500024 */
1783 extern int ipfioctl __P((dev_t, int, caddr_t, int, struct proc *));
1787 extern int ipfioctl __P((struct inode *, struct file *, u_int, u_long));
1789 extern int ipfioctl __P((dev_t, int, caddr_t, int));
1791 # endif /* (_BSDI_VERSION >= 199510) */
1792 # endif /* __ sgi */
1793 # endif /* MENTAT */
1795 # if defined(__FreeBSD_version)
1796 extern int ipf_pfil_hook __P((void));
1797 extern int ipf_pfil_unhook __P((void));
1798 extern void ipf_event_reg __P((void));
1799 extern void ipf_event_dereg __P((void));
1802 # if defined(INSTANCES)
1803 extern ipf_main_softc_t *ipf_find_softc __P((u_long));
1804 extern int ipf_set_loopback __P((ipf_main_softc_t *, ipftuneable_t *,
1808 #endif /* #ifndef _KERNEL */
1810 extern char *memstr __P((const char *, char *, size_t, size_t));
1811 extern int count4bits __P((u_32_t));
1813 extern int count6bits __P((u_32_t *));
1815 extern int frrequest __P((ipf_main_softc_t *, int, ioctlcmd_t, caddr_t,
1817 extern char *getifname __P((struct ifnet *));
1818 extern int ipfattach __P((ipf_main_softc_t *));
1819 extern int ipfdetach __P((ipf_main_softc_t *));
1820 extern u_short ipf_cksum __P((u_short *, int));
1821 extern int copyinptr __P((ipf_main_softc_t *, void *, void *, size_t));
1822 extern int copyoutptr __P((ipf_main_softc_t *, void *, void *, size_t));
1823 extern int ipf_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *));
1824 extern int ipf_inject __P((fr_info_t *, mb_t *));
1825 extern int ipf_inobj __P((ipf_main_softc_t *, void *, ipfobj_t *,
1827 extern int ipf_inobjsz __P((ipf_main_softc_t *, void *, void *,
1829 extern int ipf_ioctlswitch __P((ipf_main_softc_t *, int, void *,
1830 ioctlcmd_t, int, int, void *));
1831 extern int ipf_ipf_ioctl __P((ipf_main_softc_t *, caddr_t, ioctlcmd_t,
1833 extern int ipf_ipftune __P((ipf_main_softc_t *, ioctlcmd_t, void *));
1834 extern int ipf_matcharray_load __P((ipf_main_softc_t *, caddr_t,
1835 ipfobj_t *, int **));
1836 extern int ipf_matcharray_verify __P((int *, int));
1837 extern int ipf_outobj __P((ipf_main_softc_t *, void *, void *, int));
1838 extern int ipf_outobjk __P((ipf_main_softc_t *, ipfobj_t *, void *));
1839 extern int ipf_outobjsz __P((ipf_main_softc_t *, void *, void *,
1841 extern void *ipf_pullup __P((mb_t *, fr_info_t *, int));
1842 extern int ipf_resolvedest __P((ipf_main_softc_t *, char *,
1843 struct frdest *, int));
1844 extern int ipf_resolvefunc __P((ipf_main_softc_t *, void *));
1845 extern void *ipf_resolvenic __P((ipf_main_softc_t *, char *, int));
1846 extern int ipf_send_icmp_err __P((int, fr_info_t *, int));
1847 extern int ipf_send_reset __P((fr_info_t *));
1848 #if (defined(__FreeBSD_version) && (__FreeBSD_version < 501000)) || \
1849 !defined(_KERNEL) || defined(linux)
1851 extern void ipf_apply_timeout __P((ipftq_t *, u_int));
1852 extern ipftq_t *ipf_addtimeoutqueue __P((ipf_main_softc_t *, ipftq_t **,
1854 extern void ipf_deletequeueentry __P((ipftqent_t *));
1855 extern int ipf_deletetimeoutqueue __P((ipftq_t *));
1856 extern void ipf_freetimeoutqueue __P((ipf_main_softc_t *, ipftq_t *));
1857 extern void ipf_movequeue __P((u_long, ipftqent_t *, ipftq_t *,
1859 extern void ipf_queueappend __P((u_long, ipftqent_t *, ipftq_t *, void *));
1860 extern void ipf_queueback __P((u_long, ipftqent_t *));
1861 extern int ipf_queueflush __P((ipf_main_softc_t *, ipftq_delete_fn_t,
1862 ipftq_t *, ipftq_t *, u_int *, int, int));
1863 extern void ipf_queuefront __P((ipftqent_t *));
1864 extern int ipf_settimeout_tcp __P((ipftuneable_t *, ipftuneval_t *,
1866 extern int ipf_checkv4sum __P((fr_info_t *));
1867 extern int ipf_checkl4sum __P((fr_info_t *));
1868 extern int ipf_ifpfillv4addr __P((int, struct sockaddr_in *,
1869 struct sockaddr_in *, struct in_addr *,
1871 extern int ipf_coalesce __P((fr_info_t *));
1873 extern int ipf_checkv6sum __P((fr_info_t *));
1874 extern int ipf_ifpfillv6addr __P((int, struct sockaddr_in6 *,
1875 struct sockaddr_in6 *, i6addr_t *,
1879 extern int ipf_tune_add __P((ipf_main_softc_t *, ipftuneable_t *));
1880 extern int ipf_tune_add_array __P((ipf_main_softc_t *, ipftuneable_t *));
1881 extern int ipf_tune_del __P((ipf_main_softc_t *, ipftuneable_t *));
1882 extern int ipf_tune_del_array __P((ipf_main_softc_t *, ipftuneable_t *));
1883 extern int ipf_tune_array_link __P((ipf_main_softc_t *, ipftuneable_t *));
1884 extern int ipf_tune_array_unlink __P((ipf_main_softc_t *,
1886 extern ipftuneable_t *ipf_tune_array_copy __P((void *, size_t,
1889 extern int ipf_pr_pullup __P((fr_info_t *, int));
1891 extern int ipf_flush __P((ipf_main_softc_t *, minor_t, int));
1892 extern frgroup_t *ipf_group_add __P((ipf_main_softc_t *, char *, void *,
1893 u_32_t, minor_t, int));
1894 extern void ipf_group_del __P((ipf_main_softc_t *, frgroup_t *,
1896 extern int ipf_derefrule __P((ipf_main_softc_t *, frentry_t **));
1897 extern frgroup_t *ipf_findgroup __P((ipf_main_softc_t *, char *, minor_t,
1898 int, frgroup_t ***));
1900 extern int ipf_log_init __P((void));
1901 extern int ipf_log_bytesused __P((ipf_main_softc_t *, int));
1902 extern int ipf_log_canread __P((ipf_main_softc_t *, int));
1903 extern int ipf_log_clear __P((ipf_main_softc_t *, minor_t));
1904 extern u_long ipf_log_failures __P((ipf_main_softc_t *, int));
1905 extern int ipf_log_read __P((ipf_main_softc_t *, minor_t, uio_t *));
1906 extern int ipf_log_items __P((ipf_main_softc_t *, int, fr_info_t *,
1907 void **, size_t *, int *, int));
1908 extern u_long ipf_log_logok __P((ipf_main_softc_t *, int));
1909 extern void ipf_log_unload __P((ipf_main_softc_t *));
1910 extern int ipf_log_pkt __P((fr_info_t *, u_int));
1912 extern frentry_t *ipf_acctpkt __P((fr_info_t *, u_32_t *));
1913 extern u_short fr_cksum __P((fr_info_t *, ip_t *, int, void *));
1914 extern void ipf_deinitialise __P((ipf_main_softc_t *));
1915 extern int ipf_deliverlocal __P((ipf_main_softc_t *, int, void *,
1917 extern frentry_t *ipf_dstgrpmap __P((fr_info_t *, u_32_t *));
1918 extern void ipf_fixskip __P((frentry_t **, frentry_t *, int));
1919 extern void ipf_forgetifp __P((ipf_main_softc_t *, void *));
1920 extern frentry_t *ipf_getrulen __P((ipf_main_softc_t *, int, char *,
1922 extern int ipf_ifpaddr __P((ipf_main_softc_t *, int, int, void *,
1923 i6addr_t *, i6addr_t *));
1924 extern void ipf_inet_mask_add __P((int, ipf_v4_masktab_t *));
1925 extern void ipf_inet_mask_del __P((int, ipf_v4_masktab_t *));
1927 extern void ipf_inet6_mask_add __P((int, i6addr_t *,
1928 ipf_v6_masktab_t *));
1929 extern void ipf_inet6_mask_del __P((int, i6addr_t *,
1930 ipf_v6_masktab_t *));
1932 extern int ipf_initialise __P((void));
1933 extern int ipf_lock __P((caddr_t, int *));
1934 extern int ipf_makefrip __P((int, ip_t *, fr_info_t *));
1935 extern int ipf_matchtag __P((ipftag_t *, ipftag_t *));
1936 extern int ipf_matchicmpqueryreply __P((int, icmpinfo_t *,
1937 struct icmp *, int));
1938 extern u_32_t ipf_newisn __P((fr_info_t *));
1939 extern u_short ipf_nextipid __P((fr_info_t *));
1940 extern u_int ipf_pcksum __P((fr_info_t *, int, u_int));
1941 extern void ipf_rule_expire __P((ipf_main_softc_t *));
1942 extern int ipf_scanlist __P((fr_info_t *, u_32_t));
1943 extern frentry_t *ipf_srcgrpmap __P((fr_info_t *, u_32_t *));
1944 extern int ipf_tcpudpchk __P((fr_ip_t *, frtuc_t *));
1945 extern int ipf_verifysrc __P((fr_info_t *fin));
1946 extern int ipf_zerostats __P((ipf_main_softc_t *, char *));
1947 extern int ipf_getnextrule __P((ipf_main_softc_t *, ipftoken_t *,
1949 extern int ipf_sync __P((ipf_main_softc_t *, void *));
1950 extern int ipf_token_deref __P((ipf_main_softc_t *, ipftoken_t *));
1951 extern void ipf_token_expire __P((ipf_main_softc_t *));
1952 extern ipftoken_t *ipf_token_find __P((ipf_main_softc_t *, int, int,
1954 extern int ipf_token_del __P((ipf_main_softc_t *, int, int,
1956 extern void ipf_token_mark_complete __P((ipftoken_t *));
1957 extern int ipf_genericiter __P((ipf_main_softc_t *, void *,
1959 #ifdef IPFILTER_LOOKUP
1960 extern void *ipf_resolvelookup __P((int, u_int, u_int,
1963 extern u_32_t ipf_random __P((void));
1965 extern int ipf_main_load __P((void));
1966 extern void *ipf_main_soft_create __P((void *));
1967 extern void ipf_main_soft_destroy __P((ipf_main_softc_t *));
1968 extern int ipf_main_soft_init __P((ipf_main_softc_t *));
1969 extern int ipf_main_soft_fini __P((ipf_main_softc_t *));
1970 extern int ipf_main_unload __P((void));
1971 extern int ipf_load_all __P((void));
1972 extern int ipf_unload_all __P((void));
1973 extern void ipf_destroy_all __P((ipf_main_softc_t *));
1974 extern ipf_main_softc_t *ipf_create_all __P((void *));
1975 extern int ipf_init_all __P((ipf_main_softc_t *));
1976 extern int ipf_fini_all __P((ipf_main_softc_t *));
1977 extern void ipf_log_soft_destroy __P((ipf_main_softc_t *, void *));
1978 extern void *ipf_log_soft_create __P((ipf_main_softc_t *));
1979 extern int ipf_log_soft_init __P((ipf_main_softc_t *, void *));
1980 extern int ipf_log_soft_fini __P((ipf_main_softc_t *, void *));
1981 extern int ipf_log_main_load __P((void));
1982 extern int ipf_log_main_unload __P((void));
1985 extern char ipfilter_version[];
1987 extern int icmptoicmp6types[ICMP_MAXTYPE+1];
1988 extern int icmptoicmp6unreach[ICMP_MAX_UNREACH];
1989 extern int icmpreplytype6[ICMP6_MAXTYPE + 1];
1991 #ifdef IPFILTER_COMPAT
1992 extern int ipf_in_compat __P((ipf_main_softc_t *, ipfobj_t *, void *,int));
1993 extern int ipf_out_compat __P((ipf_main_softc_t *, ipfobj_t *, void *));
1995 extern int icmpreplytype4[ICMP_MAXTYPE + 1];
1997 extern int ipf_ht_node_add __P((ipf_main_softc_t *, host_track_t *,
1999 extern int ipf_ht_node_del __P((host_track_t *, int, i6addr_t *));
2000 extern void ipf_rb_ht_flush __P((host_track_t *));
2001 extern void ipf_rb_ht_freenode __P((host_node_t *, void *));
2002 extern void ipf_rb_ht_init __P((host_track_t *));
2004 #endif /* __IP_FIL_H__ */