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
13 #include "netinet/ip_compat.h"
14 #include "netinet/ipf_rb.h"
15 #if NETBSD_GE_REV(104040000)
16 # include <sys/callout.h>
18 #if defined(BSD) && defined(_KERNEL)
19 # if NETBSD_LT_REV(399000000) || defined(__osf__) || FREEBSD_LT_REV(500043)
20 # include <sys/select.h>
22 # include <sys/selinfo.h>
26 #if !defined(linux) || !defined(_KERNEL)
27 # include <netinet/in.h>
31 # define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
42 #if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51)
43 # define SIOCADAFR _IOW('r', 60, struct ipfobj)
44 # define SIOCRMAFR _IOW('r', 61, struct ipfobj)
45 # define SIOCSETFF _IOW('r', 62, u_int)
46 # define SIOCGETFF _IOR('r', 63, u_int)
47 # define SIOCGETFS _IOWR('r', 64, struct ipfobj)
48 # define SIOCIPFFL _IOWR('r', 65, int)
49 # define SIOCIPFFB _IOR('r', 66, int)
50 # define SIOCADIFR _IOW('r', 67, struct ipfobj)
51 # define SIOCRMIFR _IOW('r', 68, struct ipfobj)
52 # define SIOCSWAPA _IOR('r', 69, u_int)
53 # define SIOCINAFR _IOW('r', 70, struct ipfobj)
54 # define SIOCINIFR _IOW('r', 71, struct ipfobj)
55 # define SIOCFRENB _IOW('r', 72, u_int)
56 # define SIOCFRSYN _IOW('r', 73, u_int)
57 # define SIOCFRZST _IOWR('r', 74, struct ipfobj)
58 # define SIOCZRLST _IOWR('r', 75, struct ipfobj)
59 # define SIOCAUTHW _IOWR('r', 76, struct ipfobj)
60 # define SIOCAUTHR _IOWR('r', 77, struct ipfobj)
61 # define SIOCSTAT1 _IOWR('r', 78, struct ipfobj)
62 # define SIOCSTLCK _IOWR('r', 79, u_int)
63 # define SIOCSTPUT _IOWR('r', 80, struct ipfobj)
64 # define SIOCSTGET _IOWR('r', 81, struct ipfobj)
65 # define SIOCSTGSZ _IOWR('r', 82, struct ipfobj)
66 # define SIOCSTAT2 _IOWR('r', 83, struct ipfobj)
67 # define SIOCSETLG _IOWR('r', 84, int)
68 # define SIOCGETLG _IOWR('r', 85, int)
69 # define SIOCFUNCL _IOWR('r', 86, struct ipfunc_resolve)
70 # define SIOCIPFGETNEXT _IOWR('r', 87, struct ipfobj)
71 # define SIOCIPFGET _IOWR('r', 88, struct ipfobj)
72 # define SIOCIPFSET _IOWR('r', 89, struct ipfobj)
73 # define SIOCIPFL6 _IOWR('r', 90, int)
74 # define SIOCIPFITER _IOWR('r', 91, struct ipfobj)
75 # define SIOCGENITER _IOWR('r', 92, struct ipfobj)
76 # define SIOCGTABL _IOWR('r', 93, struct ipfobj)
77 # define SIOCIPFDELTOK _IOWR('r', 94, int)
78 # define SIOCLOOKUPITER _IOWR('r', 95, struct ipfobj)
79 # define SIOCGTQTAB _IOWR('r', 96, struct ipfobj)
80 # define SIOCMATCHFLUSH _IOWR('r', 97, struct ipfobj)
81 # define SIOCIPFINTERROR _IOR('r', 98, int)
83 # define SIOCADAFR _IOW(r, 60, struct ipfobj)
84 # define SIOCRMAFR _IOW(r, 61, struct ipfobj)
85 # define SIOCSETFF _IOW(r, 62, u_int)
86 # define SIOCGETFF _IOR(r, 63, u_int)
87 # define SIOCGETFS _IOWR(r, 64, struct ipfobj)
88 # define SIOCIPFFL _IOWR(r, 65, int)
89 # define SIOCIPFFB _IOR(r, 66, int)
90 # define SIOCADIFR _IOW(r, 67, struct ipfobj)
91 # define SIOCRMIFR _IOW(r, 68, struct ipfobj)
92 # define SIOCSWAPA _IOR(r, 69, u_int)
93 # define SIOCINAFR _IOW(r, 70, struct ipfobj)
94 # define SIOCINIFR _IOW(r, 71, struct ipfobj)
95 # define SIOCFRENB _IOW(r, 72, u_int)
96 # define SIOCFRSYN _IOW(r, 73, u_int)
97 # define SIOCFRZST _IOWR(r, 74, struct ipfobj)
98 # define SIOCZRLST _IOWR(r, 75, struct ipfobj)
99 # define SIOCAUTHW _IOWR(r, 76, struct ipfobj)
100 # define SIOCAUTHR _IOWR(r, 77, struct ipfobj)
101 # define SIOCSTAT1 _IOWR(r, 78, struct ipfobj)
102 # define SIOCSTLCK _IOWR(r, 79, u_int)
103 # define SIOCSTPUT _IOWR(r, 80, struct ipfobj)
104 # define SIOCSTGET _IOWR(r, 81, struct ipfobj)
105 # define SIOCSTGSZ _IOWR(r, 82, struct ipfobj)
106 # define SIOCSTAT2 _IOWR(r, 83, struct ipfobj)
107 # define SIOCSETLG _IOWR(r, 84, int)
108 # define SIOCGETLG _IOWR(r, 85, int)
109 # define SIOCFUNCL _IOWR(r, 86, struct ipfunc_resolve)
110 # define SIOCIPFGETNEXT _IOWR(r, 87, struct ipfobj)
111 # define SIOCIPFGET _IOWR(r, 88, struct ipfobj)
112 # define SIOCIPFSET _IOWR(r, 89, struct ipfobj)
113 # define SIOCIPFL6 _IOWR(r, 90, int)
114 # define SIOCIPFITER _IOWR(r, 91, struct ipfobj)
115 # define SIOCGENITER _IOWR(r, 92, struct ipfobj)
116 # define SIOCGTABL _IOWR(r, 93, struct ipfobj)
117 # define SIOCIPFDELTOK _IOWR(r, 94, int)
118 # define SIOCLOOKUPITER _IOWR(r, 95, struct ipfobj)
119 # define SIOCGTQTAB _IOWR(r, 96, struct ipfobj)
120 # define SIOCMATCHFLUSH _IOWR(r, 97, struct ipfobj)
121 # define SIOCIPFINTERROR _IOR(r, 98, int)
123 #define SIOCADDFR SIOCADAFR
124 #define SIOCDELFR SIOCRMAFR
125 #define SIOCINSFR SIOCINAFR
126 #define SIOCATHST SIOCSTAT1
127 #define SIOCGFRST SIOCSTAT2
132 struct ipf_main_softc_s;
134 typedef int (* lookupfunc_t) __P((struct ipf_main_softc_s *, void *,
135 int, void *, u_int));
138 * i6addr is used as a container for both IPv4 and IPv6 addresses, as well
139 * as other types of objects, depending on its qualifier.
142 typedef union i6addr {
147 lookupfunc_t lptr[2];
155 typedef union i6addr {
159 lookupfunc_t lptr[2];
168 #define in4_addr in4.s_addr
169 #define iplookupnum i6[1]
170 #define iplookupname i6un.name
171 #define iplookuptype i6un.type
172 #define iplookupsubtype i6un.subtype
174 * NOTE: These DO overlap the above on 64bit systems and this IS recognised.
176 #define iplookupptr vptr[0]
177 #define iplookupfunc lptr[1]
179 #define I60(x) (((u_32_t *)(x))[0])
180 #define I61(x) (((u_32_t *)(x))[1])
181 #define I62(x) (((u_32_t *)(x))[2])
182 #define I63(x) (((u_32_t *)(x))[3])
183 #define HI60(x) ntohl(((u_32_t *)(x))[0])
184 #define HI61(x) ntohl(((u_32_t *)(x))[1])
185 #define HI62(x) ntohl(((u_32_t *)(x))[2])
186 #define HI63(x) ntohl(((u_32_t *)(x))[3])
188 #define IP6_EQ(a,b) ((I63(a) == I63(b)) && (I62(a) == I62(b)) && \
189 (I61(a) == I61(b)) && (I60(a) == I60(b)))
190 #define IP6_NEQ(a,b) ((I63(a) != I63(b)) || (I62(a) != I62(b)) || \
191 (I61(a) != I61(b)) || (I60(a) != I60(b)))
192 #define IP6_ISZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) == 0)
193 #define IP6_NOTZERO(a) ((I60(a) | I61(a) | I62(a) | I63(a)) != 0)
194 #define IP6_ISONES(a) ((I63(a) == 0xffffffff) && (I62(a) == 0xffffffff) && \
195 (I61(a) == 0xffffffff) && (I60(a) == 0xffffffff))
196 #define IP6_GT(a,b) (ntohl(HI60(a)) > ntohl(HI60(b)) || \
197 (HI60(a) == HI60(b) && \
198 (ntohl(HI61(a)) > ntohl(HI61(b)) || \
199 (HI61(a) == HI61(b) && \
200 (ntohl(HI62(a)) > ntohl(HI62(b)) || \
201 (HI62(a) == HI62(b) && \
202 ntohl(HI63(a)) > ntohl(HI63(b))))))))
203 #define IP6_LT(a,b) (ntohl(HI60(a)) < ntohl(HI60(b)) || \
204 (HI60(a) == HI60(b) && \
205 (ntohl(HI61(a)) < ntohl(HI61(b)) || \
206 (HI61(a) == HI61(b) && \
207 (ntohl(HI62(a)) < ntohl(HI62(b)) || \
208 (HI62(a) == HI62(b) && \
209 ntohl(HI63(a)) < ntohl(HI63(b))))))))
210 #define NLADD(n,x) htonl(ntohl(n) + (x))
212 do { u_32_t *_i6 = (u_32_t *)(a); \
213 _i6[3] = NLADD(_i6[3], 1); \
215 _i6[2] = NLADD(_i6[2], 1); \
217 _i6[1] = NLADD(_i6[1], 1); \
219 _i6[0] = NLADD(_i6[0], 1); \
224 #define IP6_ADD(a,x,d) \
225 do { i6addr_t *_s = (i6addr_t *)(a); \
226 i6addr_t *_d = (i6addr_t *)(d); \
227 _d->i6[0] = NLADD(_s->i6[0], x); \
228 if (ntohl(_d->i6[0]) < ntohl(_s->i6[0])) { \
229 _d->i6[1] = NLADD(_d->i6[1], 1); \
230 if (ntohl(_d->i6[1]) < ntohl(_s->i6[1])) { \
231 _d->i6[2] = NLADD(_d->i6[2], 1); \
232 if (ntohl(_d->i6[2]) < ntohl(_s->i6[2])) { \
233 _d->i6[3] = NLADD(_d->i6[3], 1); \
238 #define IP6_AND(a,b,d) do { i6addr_t *_s1 = (i6addr_t *)(a); \
239 i6addr_t *_s2 = (i6addr_t *)(b); \
240 i6addr_t *_d = (i6addr_t *)(d); \
241 _d->i6[0] = _s1->i6[0] & _s2->i6[0]; \
242 _d->i6[1] = _s1->i6[1] & _s2->i6[1]; \
243 _d->i6[2] = _s1->i6[2] & _s2->i6[2]; \
244 _d->i6[3] = _s1->i6[3] & _s2->i6[3]; \
246 #define IP6_ANDASSIGN(a,m) \
247 do { i6addr_t *_d = (i6addr_t *)(a); \
248 i6addr_t *_m = (i6addr_t *)(m); \
249 _d->i6[0] &= _m->i6[0]; \
250 _d->i6[1] &= _m->i6[1]; \
251 _d->i6[2] &= _m->i6[2]; \
252 _d->i6[3] &= _m->i6[3]; \
254 #define IP6_MASKEQ(a,m,b) \
255 (((I60(a) & I60(m)) == I60(b)) && \
256 ((I61(a) & I61(m)) == I61(b)) && \
257 ((I62(a) & I62(m)) == I62(b)) && \
258 ((I63(a) & I63(m)) == I63(b)))
259 #define IP6_MASKNEQ(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_MERGE(a,b,c) \
265 do { i6addr_t *_d, *_s1, *_s2; \
266 _d = (i6addr_t *)(a); \
267 _s1 = (i6addr_t *)(b); \
268 _s2 = (i6addr_t *)(c); \
269 _d->i6[0] |= _s1->i6[0] & ~_s2->i6[0]; \
270 _d->i6[1] |= _s1->i6[1] & ~_s2->i6[1]; \
271 _d->i6[2] |= _s1->i6[2] & ~_s2->i6[2]; \
272 _d->i6[3] |= _s1->i6[3] & ~_s2->i6[3]; \
274 #define IP6_MASK(a,b,c) \
275 do { i6addr_t *_d, *_s1, *_s2; \
276 _d = (i6addr_t *)(a); \
277 _s1 = (i6addr_t *)(b); \
278 _s2 = (i6addr_t *)(c); \
279 _d->i6[0] = _s1->i6[0] & ~_s2->i6[0]; \
280 _d->i6[1] = _s1->i6[1] & ~_s2->i6[1]; \
281 _d->i6[2] = _s1->i6[2] & ~_s2->i6[2]; \
282 _d->i6[3] = _s1->i6[3] & ~_s2->i6[3]; \
284 #define IP6_SETONES(a) \
285 do { i6addr_t *_d = (i6addr_t *)(a); \
286 _d->i6[0] = 0xffffffff; \
287 _d->i6[1] = 0xffffffff; \
288 _d->i6[2] = 0xffffffff; \
289 _d->i6[3] = 0xffffffff; \
292 typedef union ipso_u {
293 u_short ipso_ripso[2];
297 typedef struct fr_ip {
298 u_32_t fi_v:4; /* IP version */
299 u_32_t fi_xx:4; /* spare */
300 u_32_t fi_tos:8; /* IP packet TOS */
301 u_32_t fi_ttl:8; /* IP packet TTL */
302 u_32_t fi_p:8; /* IP packet protocol */
303 u_32_t fi_optmsk; /* bitmask composed from IP options */
304 i6addr_t fi_src; /* source address from packet */
305 i6addr_t fi_dst; /* destination address from packet */
306 ipso_t fi_ipso; /* IP security options */
307 u_32_t fi_flx; /* packet flags */
308 u_32_t fi_tcpmsk; /* TCP options set/reset */
309 u_32_t fi_ports[2]; /* TCP ports */
310 u_char fi_tcpf; /* TCP flags */
311 u_char fi_sensitivity;
312 u_char fi_xxx[2]; /* pad */
318 #define FI_TCPUDP 0x0001 /* TCP/UCP implied comparison*/
319 #define FI_OPTIONS 0x0002
320 #define FI_FRAG 0x0004
321 #define FI_SHORT 0x0008
322 #define FI_NATED 0x0010
323 #define FI_MULTICAST 0x0020
324 #define FI_BROADCAST 0x0040
325 #define FI_MBCAST 0x0080
326 #define FI_STATE 0x0100
327 #define FI_BADNAT 0x0200
328 #define FI_BAD 0x0400
329 #define FI_OOW 0x0800 /* Out of state window, else match */
330 #define FI_ICMPERR 0x1000
331 #define FI_FRAGBODY 0x2000
332 #define FI_BADSRC 0x4000
333 #define FI_LOWTTL 0x8000
334 #define FI_CMP 0x5cfe3 /* Not FI_FRAG,FI_NATED,FI_FRAGTAIL */
335 #define FI_ICMPCMP 0x0003 /* Flags we can check for ICMP error packets */
336 #define FI_WITH 0x5effe /* Not FI_TCPUDP */
337 #define FI_V6EXTHDR 0x10000
338 #define FI_COALESCE 0x20000
339 #define FI_NEWNAT 0x40000
340 #define FI_ICMPQUERY 0x80000
341 #define FI_ENCAP 0x100000 /* encap/decap with NAT */
342 #define FI_AH 0x200000 /* AH header present */
343 #define FI_DOCKSUM 0x10000000 /* Proxy wants L4 recalculation */
344 #define FI_NOCKSUM 0x20000000 /* don't do a L4 checksum validation */
345 #define FI_NOWILD 0x40000000 /* Do not do wildcard searches */
346 #define FI_IGNORE 0x80000000
348 #define fi_secmsk fi_ipso.ipso_ripso[0]
349 #define fi_auth fi_ipso.ipso_ripso[1]
350 #define fi_doi fi_ipso.ipso_doi
351 #define fi_saddr fi_src.in4.s_addr
352 #define fi_daddr fi_dst.in4.s_addr
353 #define fi_srcnum fi_src.iplookupnum
354 #define fi_dstnum fi_dst.iplookupnum
355 #define fi_srcname fi_src.iplookupname
356 #define fi_dstname fi_dst.iplookupname
357 #define fi_srctype fi_src.iplookuptype
358 #define fi_dsttype fi_dst.iplookuptype
359 #define fi_srcsubtype fi_src.iplookupsubtype
360 #define fi_dstsubtype fi_dst.iplookupsubtype
361 #define fi_srcptr fi_src.iplookupptr
362 #define fi_dstptr fi_dst.iplookupptr
363 #define fi_srcfunc fi_src.iplookupfunc
364 #define fi_dstfunc fi_dst.iplookupfunc
368 * These are both used by the state and NAT code to indicate that one port or
369 * the other should be treated as a wildcard.
370 * NOTE: When updating, check bit masks in ip_state.h and update there too.
372 #define SI_W_SPORT 0x00000100
373 #define SI_W_DPORT 0x00000200
374 #define SI_WILDP (SI_W_SPORT|SI_W_DPORT)
375 #define SI_W_SADDR 0x00000400
376 #define SI_W_DADDR 0x00000800
377 #define SI_WILDA (SI_W_SADDR|SI_W_DADDR)
378 #define SI_NEWFR 0x00001000
379 #define SI_CLONE 0x00002000
380 #define SI_CLONED 0x00004000
381 #define SI_NEWCLONE 0x00008000
384 u_short fda_ports[2];
385 u_char fda_tcpf; /* TCP header flags (SYN, ACK, etc) */
388 typedef enum fr_breasons_e {
399 FRB_AUTHCAPTURE = 10,
402 FRB_AUTHFEEDBACK = 13,
408 #define FRB_MAX_VALUE 16
410 typedef enum ipf_cksum_e {
418 typedef struct fr_info {
420 void *fin_ifp; /* interface packet is `on' */
421 struct frentry *fin_fr; /* last matching rule */
422 int fin_out; /* in or out ? 1 == out, 0 == in */
423 fr_ip_t fin_fi; /* IP Packet summary */
424 frdat_t fin_dat; /* TCP/UDP ports, ICMP code/type */
425 int fin_dlen; /* length of data portion of packet */
427 u_32_t fin_rule; /* rule # last matched */
428 u_short fin_hlen; /* length of IP header in bytes */
429 char fin_group[FR_GROUPLEN]; /* group number, -1 for none */
430 void *fin_dp; /* start of data past IP header */
432 * Fields after fin_dp aren't used for compression of log records.
433 * fin_fi contains the IP version (fin_family)
434 * fin_rule isn't included because adding a new rule can change it but
435 * not change fin_fr. fin_rule is the rule number reported.
436 * It isn't necessary to include fin_crc because that is checked
437 * for explicitly, before calling bcmp.
439 u_32_t fin_crc; /* Simple calculation for logging */
440 int fin_family; /* AF_INET, etc. */
441 int fin_icode; /* ICMP error to return */
442 int fin_mtu; /* MTU input for ICMP need-frag */
443 int fin_rev; /* state only: 1 = reverse */
444 int fin_ipoff; /* # bytes from buffer start to hdr */
445 u_32_t fin_id; /* IP packet id field */
446 u_short fin_l4hlen; /* length of L4 header, if known */
448 int fin_depth; /* Group nesting depth */
449 int fin_error; /* Error code to return */
450 ipf_cksum_t fin_cksum; /* -1 = bad, 1 = good, 0 = not done */
451 fr_breason_t fin_reason; /* why auto blocked */
454 struct frdest *fin_dif;
455 struct frdest *fin_tif;
462 mb_t **fin_mp; /* pointer to pointer to mbuf */
463 mb_t *fin_m; /* pointer to mbuf */
465 mb_t *fin_qfm; /* pointer to mblk where pkt starts */
467 char fin_ifname[LIFNAMSIZ];
472 void *fin_fraghdr; /* pointer to start of ipv6 frag hdr */
475 #define fin_ip fin_ipu.fip_ip
476 #define fin_ip6 fin_ipu.fip_ip6
477 #define fin_v fin_fi.fi_v
478 #define fin_p fin_fi.fi_p
479 #define fin_flx fin_fi.fi_flx
480 #define fin_optmsk fin_fi.fi_optmsk
481 #define fin_secmsk fin_fi.fi_secmsk
482 #define fin_doi fin_fi.fi_doi
483 #define fin_auth fin_fi.fi_auth
484 #define fin_src fin_fi.fi_src.in4
485 #define fin_saddr fin_fi.fi_saddr
486 #define fin_dst fin_fi.fi_dst.in4
487 #define fin_daddr fin_fi.fi_daddr
488 #define fin_data fin_fi.fi_ports
489 #define fin_sport fin_fi.fi_ports[0]
490 #define fin_dport fin_fi.fi_ports[1]
491 #define fin_tcpf fin_fi.fi_tcpf
492 #define fin_src6 fin_fi.fi_src
493 #define fin_dst6 fin_fi.fi_dst
494 #define fin_srcip6 fin_fi.fi_src.in6
495 #define fin_dstip6 fin_fi.fi_dst.in6
500 typedef struct frentry *(*ipfunc_t) __P((fr_info_t *, u_32_t *));
501 typedef int (*ipfuncinit_t) __P((struct ipf_main_softc_s *, struct frentry *));
503 typedef struct ipfunc_resolve {
506 ipfuncinit_t ipfu_init;
507 ipfuncinit_t ipfu_fini;
511 * Size for compares on fr_info structures
513 #define FI_CSIZE offsetof(fr_info_t, fin_icode)
514 #define FI_LCSIZE offsetof(fr_info_t, fin_dp)
517 * Size for copying cache fr_info structure
519 #define FI_COPYSIZE offsetof(fr_info_t, fin_dp)
522 * Structure for holding IPFilter's tag information
524 #define IPFTAG_LEN 16
528 char iptu_tag[IPFTAG_LEN];
533 #define ipt_tag ipt_un.iptu_tag
534 #define ipt_num ipt_un.iptu_num
537 * Structure to define address for pool lookups.
541 sa_family_t adf_family;
547 RBI_LINK(ipf_rb, host_node_s);
549 typedef struct host_node_s {
550 RBI_FIELD(ipf_rb) hn_entry;
551 addrfamily_t hn_addr;
555 typedef RBI_HEAD(ipf_rb, host_node_s) ipf_rb_head_t;
557 typedef struct host_track_s {
558 ipf_rb_head_t ht_root;
566 typedef enum fr_dtypes_e {
571 * This structure is used to hold information about the next hop for where
572 * to forward a packet.
574 typedef struct frdest {
576 addrfamily_t fd_addr;
582 #define fd_ip6 fd_addr.adf_addr
583 #define fd_ip fd_ip6.in4
586 typedef enum fr_ctypes_e {
600 * This structure holds information about a port comparison.
602 typedef struct frpcmp {
603 fr_ctypes_t frp_cmp; /* data for port comparisons */
604 u_32_t frp_port; /* top port for <> and >< */
605 u_32_t frp_top; /* top port for <> and >< */
610 * Structure containing all the relevant TCP things that can be checked in
613 typedef struct frtuc {
614 u_char ftu_tcpfm; /* tcp flags mask */
615 u_char ftu_tcpf; /* tcp flags */
620 #define ftu_scmp ftu_src.frp_cmp
621 #define ftu_dcmp ftu_dst.frp_cmp
622 #define ftu_sport ftu_src.frp_port
623 #define ftu_dport ftu_dst.frp_port
624 #define ftu_stop ftu_src.frp_top
625 #define ftu_dtop ftu_dst.frp_top
627 #define FR_TCPFMAX 0x3f
629 typedef enum fr_atypes_e {
630 FRI_NONE = -1, /* For LHS of NAT */
631 FRI_NORMAL = 0, /* Normal address */
632 FRI_DYNAMIC, /* dynamic address */
633 FRI_LOOKUP, /* address is a pool # */
634 FRI_RANGE, /* address/mask is a range */
635 FRI_NETWORK, /* network address from if */
636 FRI_BROADCAST, /* broadcast address from if */
637 FRI_PEERADDR, /* Peer address for P-to-P */
638 FRI_NETMASKED, /* network address with netmask from if */
639 FRI_SPLIT, /* For NAT compatibility */
640 FRI_INTERFACE /* address is based on interface name */
644 * This structure makes up what is considered to be the IPFilter specific
645 * matching components of a filter rule, as opposed to the data structures
646 * used to define the result which are in frentry_t and not here.
648 typedef struct fripf {
650 fr_ip_t fri_mip; /* mask structure */
652 u_short fri_icmpm; /* data for ICMP packets (mask) */
656 fr_atypes_t fri_satype; /* addres type */
657 fr_atypes_t fri_datype; /* addres type */
658 int fri_sifpidx; /* doing dynamic addressing */
659 int fri_difpidx; /* index into fr_ifps[] to use when */
662 #define fri_dlookup fri_mip.fi_dst
663 #define fri_slookup fri_mip.fi_src
664 #define fri_dstnum fri_mip.fi_dstnum
665 #define fri_srcnum fri_mip.fi_srcnum
666 #define fri_dstname fri_mip.fi_dstname
667 #define fri_srcname fri_mip.fi_srcname
668 #define fri_dstptr fri_mip.fi_dstptr
669 #define fri_srcptr fri_mip.fi_srcptr
672 typedef enum fr_rtypes_e {
674 FR_T_IPF, /* IPF structures */
675 FR_T_BPFOPC, /* BPF opcode */
676 FR_T_CALLFUNC, /* callout to function in fr_func only */
677 FR_T_COMPIPF, /* compiled C code */
678 FR_T_IPFEXPR, /* IPF expression */
679 FR_T_BUILTIN = 0x40000000, /* rule is in kernel space */
682 FR_T_CALLFUNC_BUILTIN,
683 FR_T_COMPIPF_BUILTIN,
687 typedef struct frentry * (* frentfunc_t) __P((fr_info_t *));
689 typedef struct frentry {
691 struct frentry *fr_next;
692 struct frentry **fr_pnext;
693 struct frgroup *fr_grp;
694 struct frgroup *fr_grphead;
695 struct frgroup *fr_icmpgrp;
696 struct ipscan *fr_isc;
697 struct frentry *fr_dnext; /* 2 fr_die linked list pointers */
698 struct frentry **fr_pdnext;
700 void *fr_ptr; /* for use with fr_arg */
701 int fr_comment; /* text comment for rule */
702 int fr_size; /* size of this structure */
703 int fr_ref; /* reference count */
704 int fr_statecnt; /* state count - for limit rules */
705 u_32_t fr_die; /* only used on loading the rule */
706 u_int fr_cksum; /* checksum on filter rules for performance */
708 * The line number from a file is here because we need to be able to
709 * match the rule generated with ``grep rule ipf.conf | ipf -rf -''
710 * with the rule loaded using ``ipf -f ipf.conf'' - thus it can't be
711 * on the other side of fr_func.
713 int fr_flineno; /* line number from conf file */
715 * These are only incremented when a packet matches this rule and
716 * it is the last match
722 * For PPS rate limiting
723 * fr_lpu is used to always have the same size for this field,
724 * allocating 64bits for seconds and 32bits for milliseconds.
727 struct timeval frp_lastpkt;
736 frentfunc_t fru_func;
740 * Fields after this may not change whilst in the kernel.
742 ipfunc_t fr_func; /* call this function */
746 u_32_t fr_flags; /* per-rule flags && options (see below) */
747 u_32_t fr_logtag; /* user defined log tag # */
748 u_32_t fr_collect; /* collection number */
749 u_int fr_arg; /* misc. numeric arg for rule */
750 u_int fr_loglevel; /* syslog log facility + priority */
752 u_char fr_icode; /* return ICMP code */
753 int fr_group; /* group to which this rule belongs */
754 int fr_grhead; /* group # which this rule starts */
757 int fr_rpc; /* XID Filtering */
759 frdest_t fr_tifs[2]; /* "to"/"reply-to" interface */
760 frdest_t fr_dif; /* duplicate packet interface */
762 * These are all options related to stateful filtering
764 host_track_t fr_srctrack;
766 int fr_statemax; /* max reference count */
767 int fr_icmphead; /* ICMP group for state options */
768 u_int fr_age[2]; /* non-TCP state timeouts */
770 * How big is the name buffer at the end?
776 #define fr_lastpkt fr_lpu.frp_lastpkt
777 #define fr_caddr fr_dun.fru_caddr
778 #define fr_data fr_dun.fru_data
779 #define fr_dfunc fr_dun.fru_func
780 #define fr_ipf fr_dun.fru_ipf
781 #define fr_ip fr_ipf->fri_ip
782 #define fr_mip fr_ipf->fri_mip
783 #define fr_icmpm fr_ipf->fri_icmpm
784 #define fr_icmp fr_ipf->fri_icmp
785 #define fr_tuc fr_ipf->fri_tuc
786 #define fr_satype fr_ipf->fri_satype
787 #define fr_datype fr_ipf->fri_datype
788 #define fr_sifpidx fr_ipf->fri_sifpidx
789 #define fr_difpidx fr_ipf->fri_difpidx
790 #define fr_proto fr_ip.fi_p
791 #define fr_mproto fr_mip.fi_p
792 #define fr_ttl fr_ip.fi_ttl
793 #define fr_mttl fr_mip.fi_ttl
794 #define fr_tos fr_ip.fi_tos
795 #define fr_mtos fr_mip.fi_tos
796 #define fr_tcpfm fr_tuc.ftu_tcpfm
797 #define fr_tcpf fr_tuc.ftu_tcpf
798 #define fr_scmp fr_tuc.ftu_scmp
799 #define fr_dcmp fr_tuc.ftu_dcmp
800 #define fr_dport fr_tuc.ftu_dport
801 #define fr_sport fr_tuc.ftu_sport
802 #define fr_stop fr_tuc.ftu_stop
803 #define fr_dtop fr_tuc.ftu_dtop
804 #define fr_dst fr_ip.fi_dst.in4
805 #define fr_dst6 fr_ip.fi_dst
806 #define fr_daddr fr_ip.fi_dst.in4.s_addr
807 #define fr_src fr_ip.fi_src.in4
808 #define fr_src6 fr_ip.fi_src
809 #define fr_saddr fr_ip.fi_src.in4.s_addr
810 #define fr_dmsk fr_mip.fi_dst.in4
811 #define fr_dmsk6 fr_mip.fi_dst
812 #define fr_dmask fr_mip.fi_dst.in4.s_addr
813 #define fr_smsk fr_mip.fi_src.in4
814 #define fr_smsk6 fr_mip.fi_src
815 #define fr_smask fr_mip.fi_src.in4.s_addr
816 #define fr_dstnum fr_ip.fi_dstnum
817 #define fr_srcnum fr_ip.fi_srcnum
818 #define fr_dlookup fr_ip.fi_dst
819 #define fr_slookup fr_ip.fi_src
820 #define fr_dstname fr_ip.fi_dstname
821 #define fr_srcname fr_ip.fi_srcname
822 #define fr_dsttype fr_ip.fi_dsttype
823 #define fr_srctype fr_ip.fi_srctype
824 #define fr_dstsubtype fr_ip.fi_dstsubtype
825 #define fr_srcsubtype fr_ip.fi_srcsubtype
826 #define fr_dstptr fr_mip.fi_dstptr
827 #define fr_srcptr fr_mip.fi_srcptr
828 #define fr_dstfunc fr_mip.fi_dstfunc
829 #define fr_srcfunc fr_mip.fi_srcfunc
830 #define fr_optbits fr_ip.fi_optmsk
831 #define fr_optmask fr_mip.fi_optmsk
832 #define fr_secbits fr_ip.fi_secmsk
833 #define fr_secmask fr_mip.fi_secmsk
834 #define fr_authbits fr_ip.fi_auth
835 #define fr_authmask fr_mip.fi_auth
836 #define fr_doi fr_ip.fi_doi
837 #define fr_doimask fr_mip.fi_doi
838 #define fr_flx fr_ip.fi_flx
839 #define fr_mflx fr_mip.fi_flx
840 #define fr_ifa fr_ifas[0]
841 #define fr_oifa fr_ifas[2]
842 #define fr_tif fr_tifs[0]
843 #define fr_rif fr_tifs[1]
845 #define FR_NOLOGTAG 0
847 #define FR_CMPSIZ (sizeof(struct frentry) - \
848 offsetof(struct frentry, fr_func))
849 #define FR_NAME(_f, _n) (_f)->fr_names + (_f)->_n
855 #define FR_BLOCK 0x00001 /* do not allow packet to pass */
856 #define FR_PASS 0x00002 /* allow packet to pass */
857 #define FR_AUTH 0x00003 /* use authentication */
858 #define FR_PREAUTH 0x00004 /* require preauthentication */
859 #define FR_ACCOUNT 0x00005 /* Accounting rule */
860 #define FR_SKIP 0x00006 /* skip rule */
861 #define FR_DECAPSULATE 0x00008 /* decapsulate rule */
862 #define FR_CALL 0x00009 /* call rule */
863 #define FR_CMDMASK 0x0000f
864 #define FR_LOG 0x00010 /* Log */
865 #define FR_LOGB 0x00011 /* Log-fail */
866 #define FR_LOGP 0x00012 /* Log-pass */
867 #define FR_LOGMASK (FR_LOG|FR_CMDMASK)
868 #define FR_CALLNOW 0x00020 /* call another function (fr_func) if matches */
869 #define FR_NOTSRCIP 0x00040
870 #define FR_NOTDSTIP 0x00080
871 #define FR_QUICK 0x00100 /* match & stop processing list */
872 #define FR_KEEPFRAG 0x00200 /* keep fragment information */
873 #define FR_KEEPSTATE 0x00400 /* keep `connection' state information */
874 #define FR_FASTROUTE 0x00800 /* bypass normal routing */
875 #define FR_RETRST 0x01000 /* Return TCP RST packet - reset connection */
876 #define FR_RETICMP 0x02000 /* Return ICMP unreachable packet */
877 #define FR_FAKEICMP 0x03000 /* Return ICMP unreachable with fake source */
878 #define FR_OUTQUE 0x04000 /* outgoing packets */
879 #define FR_INQUE 0x08000 /* ingoing packets */
880 #define FR_LOGBODY 0x10000 /* Log the body */
881 #define FR_LOGFIRST 0x20000 /* Log the first byte if state held */
882 #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */
883 #define FR_STLOOSE 0x80000 /* loose state checking */
884 #define FR_FRSTRICT 0x100000 /* strict frag. cache */
885 #define FR_STSTRICT 0x200000 /* strict keep state */
886 #define FR_NEWISN 0x400000 /* new ISN for outgoing TCP */
887 #define FR_NOICMPERR 0x800000 /* do not match ICMP errors in state */
888 #define FR_STATESYNC 0x1000000 /* synchronize state to slave */
889 #define FR_COPIED 0x2000000 /* copied from user space */
890 #define FR_INACTIVE 0x4000000 /* only used when flush'ing rules */
891 #define FR_NOMATCH 0x8000000 /* no match occured */
892 /* 0x10000000 FF_LOGPASS */
893 /* 0x20000000 FF_LOGBLOCK */
894 /* 0x40000000 FF_LOGNOMATCH */
895 /* 0x80000000 FF_BLOCKNONIP */
897 #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP)
898 #define FR_ISBLOCK(x) (((x) & FR_CMDMASK) == FR_BLOCK)
899 #define FR_ISPASS(x) (((x) & FR_CMDMASK) == FR_PASS)
900 #define FR_ISAUTH(x) (((x) & FR_CMDMASK) == FR_AUTH)
901 #define FR_ISPREAUTH(x) (((x) & FR_CMDMASK) == FR_PREAUTH)
902 #define FR_ISACCOUNT(x) (((x) & FR_CMDMASK) == FR_ACCOUNT)
903 #define FR_ISSKIP(x) (((x) & FR_CMDMASK) == FR_SKIP)
904 #define FR_ISDECAPS(x) (((x) & FR_CMDMASK) == FR_DECAPSULATE)
905 #define FR_ISNOMATCH(x) ((x) & FR_NOMATCH)
906 #define FR_INOUT (FR_INQUE|FR_OUTQUE)
909 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
911 #define FF_LOGPASS 0x10000000
912 #define FF_LOGBLOCK 0x20000000
913 #define FF_LOGNOMATCH 0x40000000
914 #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
915 #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */
919 * Structure that passes information on what/how to flush to the kernel.
921 typedef struct ipfflush {
930 typedef struct ipfgetctl {
931 u_int ipfg_min; /* min value */
932 u_int ipfg_current; /* current value */
933 u_int ipfg_max; /* max value */
934 u_int ipfg_default; /* default value */
935 u_int ipfg_steps; /* value increments */
936 char ipfg_name[40]; /* tag name for this control */
939 typedef struct ipfsetctl {
940 int ipfs_which; /* 0 = min 1 = current 2 = max 3 = default */
941 u_int ipfs_value; /* min value */
942 char ipfs_name[40]; /* tag name for this control */
947 * Some of the statistics below are in their own counters, but most are kept
948 * in this single structure so that they can all easily be collected and
949 * copied back as required.
951 typedef struct ipf_statistics {
952 u_long fr_icmp_coalesce;
954 u_long fr_tcp_pullup;
957 u_long fr_tcp_bad_flags;
958 u_long fr_udp_pullup;
962 u_long fr_v6_badfrag;
963 u_long fr_v6_dst_bad;
964 u_long fr_v6_esp_pullup;
965 u_long fr_v6_ext_short;
966 u_long fr_v6_ext_pullup;
967 u_long fr_v6_ext_hlen;
968 u_long fr_v6_frag_bad;
969 u_long fr_v6_frag_pullup;
970 u_long fr_v6_frag_size;
971 u_long fr_v6_gre_pullup;
972 u_long fr_v6_icmp6_pullup;
974 u_long fr_v6_badttl; /* TTL in packet doesn't reach minimum */
976 u_long fr_v4_ah_pullup;
977 u_long fr_v4_esp_pullup;
978 u_long fr_v4_cipso_bad;
979 u_long fr_v4_cipso_tlen;
980 u_long fr_v4_gre_frag;
981 u_long fr_v4_gre_pullup;
982 u_long fr_v4_icmp_frag;
983 u_long fr_v4_icmp_pullup;
984 u_long fr_v4_badttl; /* TTL in packet doesn't reach minimum */
985 u_long fr_v4_badsrc; /* source received doesn't match route */
986 u_long fr_l4_badcksum; /* layer 4 header checksum failure */
987 u_long fr_badcoalesces;
988 u_long fr_pass; /* packets allowed */
989 u_long fr_block; /* packets denied */
990 u_long fr_nom; /* packets which don't match any rule */
991 u_long fr_short; /* packets which are short */
992 u_long fr_ppkl; /* packets allowed and logged */
993 u_long fr_bpkl; /* packets denied and logged */
994 u_long fr_npkl; /* packets unmatched and logged */
995 u_long fr_ret; /* packets for which a return is sent */
996 u_long fr_acct; /* packets for which counting was performed */
997 u_long fr_bnfr; /* bad attempts to allocate fragment state */
998 u_long fr_nfr; /* new fragment state kept */
999 u_long fr_cfr; /* add new fragment state but complete pkt */
1000 u_long fr_bads; /* bad attempts to allocate packet state */
1001 u_long fr_ads; /* new packet state kept */
1002 u_long fr_chit; /* cached hit */
1003 u_long fr_cmiss; /* cached miss */
1004 u_long fr_tcpbad; /* TCP checksum check failures */
1005 u_long fr_pull[2]; /* good and bad pullup attempts */
1006 u_long fr_bad; /* bad IP packets to the filter */
1007 u_long fr_ipv6; /* IPv6 packets in/out */
1008 u_long fr_ppshit; /* dropped because of pps ceiling */
1009 u_long fr_ipud; /* IP id update failures */
1010 u_long fr_blocked[FRB_MAX_VALUE + 1];
1014 * Log structure. Each packet header logged is prepended by one of these.
1015 * Following this in the log records read from the device will be an ipflog
1016 * structure which is then followed by any packet data.
1018 typedef struct iplog {
1022 struct timeval ipl_time;
1024 struct iplog *ipl_next;
1027 #define ipl_sec ipl_time.tv_sec
1028 #define ipl_usec ipl_time.tv_usec
1030 #define IPL_MAGIC 0x49504c4d /* 'IPLM' */
1031 #define IPL_MAGIC_NAT 0x49504c4e /* 'IPLN' */
1032 #define IPL_MAGIC_STATE 0x49504c53 /* 'IPLS' */
1033 #define IPLOG_SIZE sizeof(iplog_t)
1035 typedef struct ipflog {
1036 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
1037 (defined(OpenBSD) && (OpenBSD >= 199603))
1046 u_short fl_plen; /* extra data after hlen */
1047 u_short fl_loglevel; /* syslog log level */
1048 char fl_group[FR_GROUPLEN];
1049 u_char fl_hlen; /* length of IP headers saved */
1051 u_char fl_breason; /* from fin_reason */
1052 u_char fl_family; /* address family of packet logged */
1053 char fl_ifname[LIFNAMSIZ];
1057 # define IPF_LOGGING 0
1059 #ifndef IPF_DEFAULT_PASS
1060 # define IPF_DEFAULT_PASS FR_PASS
1063 #define DEFAULT_IPFLOGSIZE 32768
1064 #ifndef IPFILTER_LOGSIZE
1065 # define IPFILTER_LOGSIZE DEFAULT_IPFLOGSIZE
1067 # if IPFILTER_LOGSIZE < 8192
1068 # error IPFILTER_LOGSIZE too small. Must be >= 8192
1072 #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */
1075 * Device filenames for reading log information. Use ipf on Solaris2 because
1076 * ipl is already a name used by something else.
1080 # define IPL_NAME "/dev/ipf"
1082 # define IPL_NAME "/dev/ipl"
1086 * Pathnames for various IP Filter control devices. Used by LKM
1087 * and userland, so defined here.
1089 #define IPNAT_NAME "/dev/ipnat"
1090 #define IPSTATE_NAME "/dev/ipstate"
1091 #define IPAUTH_NAME "/dev/ipauth"
1092 #define IPSYNC_NAME "/dev/ipsync"
1093 #define IPSCAN_NAME "/dev/ipscan"
1094 #define IPLOOKUP_NAME "/dev/iplookup"
1096 #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */
1097 #define IPL_LOGNAT 1
1098 #define IPL_LOGSTATE 2
1099 #define IPL_LOGAUTH 3
1100 #define IPL_LOGSYNC 4
1101 #define IPL_LOGSCAN 5
1102 #define IPL_LOGLOOKUP 6
1103 #define IPL_LOGCOUNT 7
1104 #define IPL_LOGMAX 7
1105 #define IPL_LOGSIZE IPL_LOGMAX + 1
1106 #define IPL_LOGALL -1
1107 #define IPL_LOGNONE -2
1112 typedef struct friostat {
1113 ipf_statistics_t f_st[2];
1114 frentry_t *f_ipf[2][2];
1115 frentry_t *f_acct[2][2];
1117 struct frgroup *f_groups[IPL_LOGSIZE][2];
1122 u_long f_rb_node_max;
1124 int f_locks[IPL_LOGSIZE];
1125 int f_defpass; /* default pass - from fr_pass */
1126 int f_active; /* 1 or 0 - active rule set */
1127 int f_running; /* 1 if running, else 0 */
1128 int f_logging; /* 1 if enabled, else 0 */
1130 char f_version[32]; /* version string */
1133 #define f_fin f_ipf[0]
1134 #define f_fout f_ipf[1]
1135 #define f_acctin f_acct[0]
1136 #define f_acctout f_acct[1]
1138 #define IPF_FEAT_LKM 0x001
1139 #define IPF_FEAT_LOG 0x002
1140 #define IPF_FEAT_LOOKUP 0x004
1141 #define IPF_FEAT_BPF 0x008
1142 #define IPF_FEAT_COMPILED 0x010
1143 #define IPF_FEAT_CKSUM 0x020
1144 #define IPF_FEAT_SYNC 0x040
1145 #define IPF_FEAT_SCAN 0x080
1146 #define IPF_FEAT_IPV6 0x100
1148 typedef struct optlist {
1155 * Group list structure.
1157 typedef struct frgroup {
1158 struct frgroup *fg_next;
1159 struct frentry *fg_head;
1160 struct frentry *fg_start;
1161 struct frgroup **fg_set;
1164 char fg_name[FR_GROUPLEN];
1167 #define FG_NAME(g) (*(g)->fg_name == '\0' ? "" : (g)->fg_name)
1171 * Used by state and NAT tables
1173 typedef struct icmpinfo {
1179 typedef struct udpinfo {
1185 typedef struct tcpdata {
1194 #define TCP_WSCALE_MAX 14
1196 #define TCP_WSCALE_SEEN 0x00000001
1197 #define TCP_WSCALE_FIRST 0x00000002
1198 #define TCP_SACK_PERMIT 0x00000004
1201 typedef struct tcpinfo {
1204 tcpdata_t ts_data[2];
1209 * Structures to define a GRE header as seen in a packet.
1236 typedef struct grehdr {
1238 struct grebits gru_bits;
1245 #define gr_flags gr_un.gru_flags
1246 #define gr_bits gr_un.gru_bits
1247 #define gr_ptype gr_bits.grb_ptype
1248 #define gr_C gr_bits.grb_C
1249 #define gr_R gr_bits.grb_R
1250 #define gr_K gr_bits.grb_K
1251 #define gr_S gr_bits.grb_S
1252 #define gr_s gr_bits.grb_s
1253 #define gr_recur gr_bits.grb_recur
1254 #define gr_A gr_bits.grb_A
1255 #define gr_ver gr_bits.grb_ver
1258 * GRE information tracked by "keep state"
1260 typedef struct greinfo {
1266 #define GRE_REV(x) ((ntohs(x) >> 13) & 7)
1270 * Format of an Authentication header
1272 typedef struct authhdr {
1275 u_short ah_reserved;
1278 /* Following the sequence number field is 0 or more bytes of */
1279 /* authentication data, as specified by ah_plen - RFC 2402. */
1284 * Timeout tail queue list member
1286 typedef struct ipftqent {
1287 struct ipftqent **tqe_pnext;
1288 struct ipftqent *tqe_next;
1289 struct ipftq *tqe_ifq;
1290 void *tqe_parent; /* pointer back to NAT/state struct */
1291 u_32_t tqe_die; /* when this entriy is to die */
1294 int tqe_state[2]; /* current state of this entry */
1297 #define TQE_RULEBASED 0x00000001
1298 #define TQE_DELETE 0x00000002
1302 * Timeout tail queue head for IPFilter
1304 typedef struct ipftq {
1305 ipfmutex_t ifq_lock;
1307 ipftqent_t *ifq_head;
1308 ipftqent_t **ifq_tail;
1309 struct ipftq *ifq_next;
1310 struct ipftq **ifq_pnext;
1315 #define IFQF_USER 0x01 /* User defined aging */
1316 #define IFQF_DELETE 0x02 /* Marked for deletion */
1317 #define IFQF_PROXY 0x04 /* Timeout queue in use by a proxy */
1319 #define IPFTQ_INIT(x,y,z) do { \
1320 (x)->ifq_ttl = (y); \
1321 (x)->ifq_head = NULL; \
1323 (x)->ifq_tail = &(x)->ifq_head; \
1324 MUTEX_INIT(&(x)->ifq_lock, (z)); \
1327 #define IPF_HZ_MULT 1
1328 #define IPF_HZ_DIVIDE 2 /* How many times a second ipfilter */
1329 /* checks its timeout queues. */
1330 #define IPF_TTLVAL(x) (((x) / IPF_HZ_MULT) * IPF_HZ_DIVIDE)
1332 typedef int (*ipftq_delete_fn_t)(struct ipf_main_softc_s *, void *);
1336 * Object structure description. For passing through in ioctls.
1338 typedef struct ipfobj {
1339 u_32_t ipfo_rev; /* IPFilter version number */
1340 u_32_t ipfo_size; /* size of object at ipfo_ptr */
1341 void *ipfo_ptr; /* pointer to object */
1342 int ipfo_type; /* type of object being pointed to */
1343 int ipfo_offset; /* bytes from ipfo_ptr where to start */
1344 int ipfo_retval; /* return value */
1345 u_char ipfo_xxxpad[28]; /* reserved for future use */
1348 #define IPFOBJ_FRENTRY 0 /* struct frentry */
1349 #define IPFOBJ_IPFSTAT 1 /* struct friostat */
1350 #define IPFOBJ_IPFINFO 2 /* struct fr_info */
1351 #define IPFOBJ_AUTHSTAT 3 /* struct fr_authstat */
1352 #define IPFOBJ_FRAGSTAT 4 /* struct ipfrstat */
1353 #define IPFOBJ_IPNAT 5 /* struct ipnat */
1354 #define IPFOBJ_NATSTAT 6 /* struct natstat */
1355 #define IPFOBJ_STATESAVE 7 /* struct ipstate_save */
1356 #define IPFOBJ_NATSAVE 8 /* struct nat_save */
1357 #define IPFOBJ_NATLOOKUP 9 /* struct natlookup */
1358 #define IPFOBJ_IPSTATE 10 /* struct ipstate */
1359 #define IPFOBJ_STATESTAT 11 /* struct ips_stat */
1360 #define IPFOBJ_FRAUTH 12 /* struct frauth */
1361 #define IPFOBJ_TUNEABLE 13 /* struct ipftune */
1362 #define IPFOBJ_NAT 14 /* struct nat */
1363 #define IPFOBJ_IPFITER 15 /* struct ipfruleiter */
1364 #define IPFOBJ_GENITER 16 /* struct ipfgeniter */
1365 #define IPFOBJ_GTABLE 17 /* struct ipftable */
1366 #define IPFOBJ_LOOKUPITER 18 /* struct ipflookupiter */
1367 #define IPFOBJ_STATETQTAB 19 /* struct ipftq * NSTATES */
1368 #define IPFOBJ_IPFEXPR 20
1369 #define IPFOBJ_PROXYCTL 21 /* strct ap_ctl */
1370 #define IPFOBJ_FRIPF 22 /* structfripf */
1371 #define IPFOBJ_COUNT 23 /* How many #defines are above this? */
1374 typedef union ipftunevalptr {
1378 u_short *ipftp_short;
1380 u_long ipftp_offset;
1383 typedef union ipftuneval {
1386 u_short ipftu_short;
1391 typedef int (* ipftunefunc_t) __P((struct ipf_main_softc_s *, struct ipftuneable *, ipftuneval_t *));
1393 typedef struct ipftuneable {
1394 ipftunevalptr_t ipft_una;
1395 const char *ipft_name;
1400 struct ipftuneable *ipft_next;
1401 ipftunefunc_t ipft_func;
1404 #define ipft_addr ipft_una.ipftp_void
1405 #define ipft_plong ipft_una.ipftp_long
1406 #define ipft_pint ipft_una.ipftp_int
1407 #define ipft_pshort ipft_una.ipftp_short
1408 #define ipft_pchar ipft_una.ipftp_char
1410 #define IPFT_RDONLY 1 /* read-only */
1411 #define IPFT_WRDISABLED 2 /* write when disabled only */
1413 typedef struct ipftune {
1415 ipftuneval_t ipft_un;
1423 #define ipft_vlong ipft_un.ipftu_long
1424 #define ipft_vint ipft_un.ipftu_int
1425 #define ipft_vshort ipft_un.ipftu_short
1426 #define ipft_vchar ipft_un.ipftu_char
1431 #define IPFHASH(x,y) typedef struct { \
1432 ipfrwlock_t ipfh_lock; \
1433 struct x *ipfh_head; \
1440 /* HP-UX locking sequence deadlock detection module lock MAJOR ID */
1441 # define IPF_SMAJ 0 /* temp assignment XXX, not critical */
1444 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
1445 (__FreeBSD_version >= 220000)
1446 # define CDEV_MAJOR 79
1450 * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns
1451 * on those hooks. We don't need any special mods in non-IP Filter code
1454 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
1455 (defined(NetBSD1_2) && NetBSD1_2 > 1) || \
1456 (defined(__FreeBSD__) && (__FreeBSD_version >= 500043))
1457 # if (NetBSD >= 199905)
1466 # define FR_VERBOSE(verb_pr)
1467 # define FR_DEBUG(verb_pr)
1469 extern void ipfkdebug __P((char *, ...));
1470 extern void ipfkverbose __P((char *, ...));
1471 # define FR_VERBOSE(verb_pr) ipfkverbose verb_pr
1472 # define FR_DEBUG(verb_pr) ipfkdebug verb_pr
1478 typedef struct ipfruleiter {
1480 char iri_group[FR_GROUPLEN];
1483 int iri_v; /* No longer used (compatibility) */
1484 frentry_t *iri_rule;
1488 * Values for iri_inout
1496 typedef struct ipfgeniter {
1502 #define IPFGENITER_IPF 0
1503 #define IPFGENITER_NAT 1
1504 #define IPFGENITER_IPNAT 2
1505 #define IPFGENITER_FRAG 3
1506 #define IPFGENITER_AUTH 4
1507 #define IPFGENITER_STATE 5
1508 #define IPFGENITER_NATFRAG 6
1509 #define IPFGENITER_HOSTMAP 7
1510 #define IPFGENITER_LOOKUP 8
1512 typedef struct ipftable {
1517 #define IPFTABLE_BUCKETS 1
1518 #define IPFTABLE_BUCKETS_NATIN 2
1519 #define IPFTABLE_BUCKETS_NATOUT 3
1522 typedef struct ipf_v4_masktab_s {
1523 u_32_t imt4_active[33];
1528 typedef struct ipf_v6_masktab_s {
1529 i6addr_t imt6_active[129];
1530 int imt6_masks[129];
1538 typedef struct ipftoken {
1539 struct ipftoken *ipt_next;
1540 struct ipftoken **ipt_pnext;
1555 typedef struct ipfexp {
1564 * Currently support commands (ipfe_cmd)
1565 * 32bits is split up follows:
1567 * aa = 0 = packet matching, 1 = meta data matching
1568 * bb = IP protocol number
1571 #define IPF_EXP_IP_PR 0x00000001
1572 #define IPF_EXP_IP_ADDR 0x00000002
1573 #define IPF_EXP_IP_SRCADDR 0x00000003
1574 #define IPF_EXP_IP_DSTADDR 0x00000004
1575 #define IPF_EXP_IP6_ADDR 0x00000005
1576 #define IPF_EXP_IP6_SRCADDR 0x00000006
1577 #define IPF_EXP_IP6_DSTADDR 0x00000007
1578 #define IPF_EXP_TCP_FLAGS 0x00060001
1579 #define IPF_EXP_TCP_PORT 0x00060002
1580 #define IPF_EXP_TCP_SPORT 0x00060003
1581 #define IPF_EXP_TCP_DPORT 0x00060004
1582 #define IPF_EXP_UDP_PORT 0x00110002
1583 #define IPF_EXP_UDP_SPORT 0x00110003
1584 #define IPF_EXP_UDP_DPORT 0x00110004
1585 #define IPF_EXP_IDLE_GT 0x01000001
1586 #define IPF_EXP_TCP_STATE 0x01060002
1587 #define IPF_EXP_END 0xffffffff
1589 #define ONE_DAY IPF_TTLVAL(1 * 86400) /* 1 day */
1590 #define FIVE_DAYS (5 * ONE_DAY)
1592 typedef struct ipf_main_softc_s {
1593 struct ipf_main_softc_s *ipf_next;
1595 ipfmutex_t ipf_timeoutlock;
1596 ipfrwlock_t ipf_mutex;
1597 ipfrwlock_t ipf_frag;
1598 ipfrwlock_t ipf_global;
1599 ipfrwlock_t ipf_tokens;
1600 ipfrwlock_t ipf_state;
1601 ipfrwlock_t ipf_nat;
1602 ipfrwlock_t ipf_natfrag;
1603 ipfrwlock_t ipf_poolrw;
1604 int ipf_dynamic_softc;
1609 int ipf_control_forwarding;
1610 int ipf_update_ipid;
1611 int ipf_chksrc; /* causes a system crash if enabled */
1614 int ipf_icmpminfragmtu;
1615 int ipf_interror; /* Should be in a struct that is per */
1616 /* thread or process. Does not belong */
1617 /* here but there's a lot more work */
1618 /* in doing that properly. For now, */
1619 /* it is squatting. */
1620 u_int ipf_tcpidletimeout;
1621 u_int ipf_tcpclosewait;
1622 u_int ipf_tcplastack;
1623 u_int ipf_tcptimewait;
1624 u_int ipf_tcptimeout;
1625 u_int ipf_tcpsynsent;
1626 u_int ipf_tcpsynrecv;
1627 u_int ipf_tcpclosed;
1628 u_int ipf_tcphalfclosed;
1629 u_int ipf_udptimeout;
1630 u_int ipf_udpacktimeout;
1631 u_int ipf_icmptimeout;
1632 u_int ipf_icmpacktimeout;
1633 u_int ipf_iptimeout;
1635 u_long ipf_userifqs;
1636 u_long ipf_rb_no_mem;
1637 u_long ipf_rb_node_max;
1638 u_long ipf_frouteok[2];
1639 ipftuneable_t *ipf_tuners;
1640 void *ipf_frag_soft;
1642 void *ipf_state_soft;
1643 void *ipf_auth_soft;
1644 void *ipf_proxy_soft;
1645 void *ipf_sync_soft;
1646 void *ipf_lookup_soft;
1648 struct frgroup *ipf_groups[IPL_LOGSIZE][2];
1649 frentry_t *ipf_rules[2][2];
1650 frentry_t *ipf_acct[2][2];
1651 frentry_t *ipf_rule_explist[2];
1652 ipftoken_t *ipf_token_head;
1653 ipftoken_t **ipf_token_tail;
1654 #if defined(__FreeBSD_version) && (__FreeBSD_version >= 300000) && \
1656 struct callout_handle ipf_slow_ch;
1658 #if defined(linux) && defined(_KERNEL)
1659 struct timer_list ipf_timer;
1661 #if NETBSD_GE_REV(104040000)
1662 struct callout ipf_slow_ch;
1666 timeout_id_t ipf_slow_ch;
1671 #if defined(_KERNEL)
1673 struct pollhead ipf_poll_head[IPL_LOGSIZE];
1675 # if defined(INSTANCES)
1676 int ipf_get_loopback;
1678 net_handle_t ipf_nd_v4;
1679 net_handle_t ipf_nd_v6;
1680 hook_t *ipf_hk_v4_in;
1681 hook_t *ipf_hk_v4_out;
1682 hook_t *ipf_hk_v4_nic;
1683 hook_t *ipf_hk_v6_in;
1684 hook_t *ipf_hk_v6_out;
1685 hook_t *ipf_hk_v6_nic;
1686 hook_t *ipf_hk_loop_v4_in;
1687 hook_t *ipf_hk_loop_v4_out;
1688 hook_t *ipf_hk_loop_v6_in;
1689 hook_t *ipf_hk_loop_v6_out;
1692 # if defined(linux) && defined(_KERNEL)
1693 struct poll_table_struct ipf_selwait[IPL_LOGSIZE];
1694 wait_queue_head_t iplh_linux[IPL_LOGSIZE];
1696 struct selinfo ipf_selwait[IPL_LOGSIZE];
1701 ipf_statistics_t ipf_stats[2];
1702 u_char ipf_iss_secret[32];
1706 #define IPFERROR(_e) do { softc->ipf_interror = (_e); \
1707 DT1(user_error, int, _e); \
1711 extern int ipf_check __P((void *, struct ip *, int, void *, int, mb_t **));
1712 extern int (*ipf_checkp) __P((ip_t *, int, void *, int, mb_t **));
1713 extern struct ifnet *get_unit __P((char *, int));
1714 extern char *get_ifname __P((struct ifnet *));
1715 extern int ipfioctl __P((ipf_main_softc_t *, int, ioctlcmd_t,
1717 extern void m_freem __P((mb_t *));
1718 extern size_t msgdsize __P((mb_t *));
1719 extern int bcopywrap __P((void *, void *, size_t));
1720 #else /* #ifndef _KERNEL */
1721 # if defined(__NetBSD__) && defined(PFIL_HOOKS)
1722 extern void ipfilterattach __P((int));
1724 extern int ipl_enable __P((void));
1725 extern int ipl_disable __P((void));
1727 extern int ipf_check __P((void *, struct ip *, int, void *, int, void *,
1730 extern void ipf_prependmbt(fr_info_t *, mblk_t *);
1732 extern int ipfioctl __P((dev_t, int, intptr_t, int, cred_t *, int *));
1734 extern int ipfioctl __P((dev_t, int, int *, int, cred_t *, int *));
1738 extern int ipfioctl __P((dev_t, int, caddr_t, int));
1739 extern int ipf_select __P((dev_t, int));
1741 extern int ipf_qout __P((queue_t *, mblk_t *));
1743 extern int ipf_check __P((void *, struct ip *, int, void *, int, mb_t **));
1744 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **));
1745 extern size_t mbufchainlen __P((mb_t *));
1747 # include <sys/cred.h>
1748 extern int ipfioctl __P((dev_t, int, caddr_t, int, cred_t *, int *));
1749 extern int ipfilter_sgi_attach __P((void));
1750 extern void ipfilter_sgi_detach __P((void));
1751 extern void ipfilter_sgi_intfsync __P((void));
1753 # ifdef IPFILTER_LKM
1754 extern int ipf_identify __P((char *));
1756 # if BSDOS_GE_REV(199510) || FREEBSD_GE_REV(220000) || \
1757 (defined(NetBSD) && (NetBSD >= 199511)) || defined(__OpenBSD__)
1758 # if defined(__NetBSD__) || BSDOS_GE_REV(199701) || \
1759 defined(__OpenBSD__) || FREEBSD_GE_REV(300000)
1760 # if (__FreeBSD_version >= 500024)
1761 # if (__FreeBSD_version >= 502116)
1762 extern int ipfioctl __P((struct cdev*, u_long, caddr_t, int, struct thread *));
1764 extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct thread *));
1765 # endif /* __FreeBSD_version >= 502116 */
1767 # if NETBSD_GE_REV(499001000)
1768 extern int ipfioctl __P((dev_t, u_long, void *, int, struct lwp *));
1770 # if NETBSD_GE_REV(399001400)
1771 extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct lwp *));
1773 extern int ipfioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
1776 # endif /* __FreeBSD_version >= 500024 */
1778 extern int ipfioctl __P((dev_t, int, caddr_t, int, struct proc *));
1782 extern int ipfioctl __P((struct inode *, struct file *, u_int, u_long));
1784 extern int ipfioctl __P((dev_t, int, caddr_t, int));
1786 # endif /* (_BSDI_VERSION >= 199510) */
1787 # endif /* __ sgi */
1788 # endif /* MENTAT */
1790 # if defined(__FreeBSD_version)
1791 extern int ipf_pfil_hook __P((void));
1792 extern int ipf_pfil_unhook __P((void));
1793 extern void ipf_event_reg __P((void));
1794 extern void ipf_event_dereg __P((void));
1797 # if defined(INSTANCES)
1798 extern ipf_main_softc_t *ipf_find_softc __P((u_long));
1799 extern int ipf_set_loopback __P((ipf_main_softc_t *, ipftuneable_t *,
1803 #endif /* #ifndef _KERNEL */
1805 extern char *memstr __P((const char *, char *, size_t, size_t));
1806 extern int count4bits __P((u_32_t));
1808 extern int count6bits __P((u_32_t *));
1810 extern int frrequest __P((ipf_main_softc_t *, int, ioctlcmd_t, caddr_t,
1812 extern char *getifname __P((struct ifnet *));
1813 extern int ipfattach __P((ipf_main_softc_t *));
1814 extern int ipfdetach __P((ipf_main_softc_t *));
1815 extern u_short ipf_cksum __P((u_short *, int));
1816 extern int copyinptr __P((ipf_main_softc_t *, void *, void *, size_t));
1817 extern int copyoutptr __P((ipf_main_softc_t *, void *, void *, size_t));
1818 extern int ipf_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *));
1819 extern int ipf_inject __P((fr_info_t *, mb_t *));
1820 extern int ipf_inobj __P((ipf_main_softc_t *, void *, ipfobj_t *,
1822 extern int ipf_inobjsz __P((ipf_main_softc_t *, void *, void *,
1824 extern int ipf_ioctlswitch __P((ipf_main_softc_t *, int, void *,
1825 ioctlcmd_t, int, int, void *));
1826 extern int ipf_ipf_ioctl __P((ipf_main_softc_t *, caddr_t, ioctlcmd_t,
1828 extern int ipf_ipftune __P((ipf_main_softc_t *, ioctlcmd_t, void *));
1829 extern int ipf_matcharray_load __P((ipf_main_softc_t *, caddr_t,
1830 ipfobj_t *, int **));
1831 extern int ipf_matcharray_verify __P((int *, int));
1832 extern int ipf_outobj __P((ipf_main_softc_t *, void *, void *, int));
1833 extern int ipf_outobjk __P((ipf_main_softc_t *, ipfobj_t *, void *));
1834 extern int ipf_outobjsz __P((ipf_main_softc_t *, void *, void *,
1836 extern void *ipf_pullup __P((mb_t *, fr_info_t *, int));
1837 extern int ipf_resolvedest __P((ipf_main_softc_t *, char *,
1838 struct frdest *, int));
1839 extern int ipf_resolvefunc __P((ipf_main_softc_t *, void *));
1840 extern void *ipf_resolvenic __P((ipf_main_softc_t *, char *, int));
1841 extern int ipf_send_icmp_err __P((int, fr_info_t *, int));
1842 extern int ipf_send_reset __P((fr_info_t *));
1843 #if (defined(__FreeBSD_version) && (__FreeBSD_version < 501000)) || \
1844 !defined(_KERNEL) || defined(linux)
1846 extern void ipf_apply_timeout __P((ipftq_t *, u_int));
1847 extern ipftq_t *ipf_addtimeoutqueue __P((ipf_main_softc_t *, ipftq_t **,
1849 extern void ipf_deletequeueentry __P((ipftqent_t *));
1850 extern int ipf_deletetimeoutqueue __P((ipftq_t *));
1851 extern void ipf_freetimeoutqueue __P((ipf_main_softc_t *, ipftq_t *));
1852 extern void ipf_movequeue __P((u_long, ipftqent_t *, ipftq_t *,
1854 extern void ipf_queueappend __P((u_long, ipftqent_t *, ipftq_t *, void *));
1855 extern void ipf_queueback __P((u_long, ipftqent_t *));
1856 extern int ipf_queueflush __P((ipf_main_softc_t *, ipftq_delete_fn_t,
1857 ipftq_t *, ipftq_t *, u_int *, int, int));
1858 extern void ipf_queuefront __P((ipftqent_t *));
1859 extern int ipf_settimeout_tcp __P((ipftuneable_t *, ipftuneval_t *,
1861 extern int ipf_checkv4sum __P((fr_info_t *));
1862 extern int ipf_checkl4sum __P((fr_info_t *));
1863 extern int ipf_ifpfillv4addr __P((int, struct sockaddr_in *,
1864 struct sockaddr_in *, struct in_addr *,
1866 extern int ipf_coalesce __P((fr_info_t *));
1868 extern int ipf_checkv6sum __P((fr_info_t *));
1869 extern int ipf_ifpfillv6addr __P((int, struct sockaddr_in6 *,
1870 struct sockaddr_in6 *, i6addr_t *,
1874 extern int ipf_tune_add __P((ipf_main_softc_t *, ipftuneable_t *));
1875 extern int ipf_tune_add_array __P((ipf_main_softc_t *, ipftuneable_t *));
1876 extern int ipf_tune_del __P((ipf_main_softc_t *, ipftuneable_t *));
1877 extern int ipf_tune_del_array __P((ipf_main_softc_t *, ipftuneable_t *));
1878 extern int ipf_tune_array_link __P((ipf_main_softc_t *, ipftuneable_t *));
1879 extern int ipf_tune_array_unlink __P((ipf_main_softc_t *,
1881 extern ipftuneable_t *ipf_tune_array_copy __P((void *, size_t,
1884 extern int ipf_pr_pullup __P((fr_info_t *, int));
1886 extern int ipf_flush __P((ipf_main_softc_t *, minor_t, int));
1887 extern frgroup_t *ipf_group_add __P((ipf_main_softc_t *, char *, void *,
1888 u_32_t, minor_t, int));
1889 extern void ipf_group_del __P((ipf_main_softc_t *, frgroup_t *,
1891 extern int ipf_derefrule __P((ipf_main_softc_t *, frentry_t **));
1892 extern frgroup_t *ipf_findgroup __P((ipf_main_softc_t *, char *, minor_t,
1893 int, frgroup_t ***));
1895 extern int ipf_log_init __P((void));
1896 extern int ipf_log_bytesused __P((ipf_main_softc_t *, int));
1897 extern int ipf_log_canread __P((ipf_main_softc_t *, int));
1898 extern int ipf_log_clear __P((ipf_main_softc_t *, minor_t));
1899 extern u_long ipf_log_failures __P((ipf_main_softc_t *, int));
1900 extern int ipf_log_read __P((ipf_main_softc_t *, minor_t, uio_t *));
1901 extern int ipf_log_items __P((ipf_main_softc_t *, int, fr_info_t *,
1902 void **, size_t *, int *, int));
1903 extern u_long ipf_log_logok __P((ipf_main_softc_t *, int));
1904 extern void ipf_log_unload __P((ipf_main_softc_t *));
1905 extern int ipf_log_pkt __P((fr_info_t *, u_int));
1906 extern int ipf_log_pkt __P((fr_info_t *, u_int));
1908 extern frentry_t *ipf_acctpkt __P((fr_info_t *, u_32_t *));
1909 extern u_short fr_cksum __P((fr_info_t *, ip_t *, int, void *));
1910 extern void ipf_deinitialise __P((ipf_main_softc_t *));
1911 extern int ipf_deliverlocal __P((ipf_main_softc_t *, int, void *,
1913 extern frentry_t *ipf_dstgrpmap __P((fr_info_t *, u_32_t *));
1914 extern void ipf_fixskip __P((frentry_t **, frentry_t *, int));
1915 extern void ipf_forgetifp __P((ipf_main_softc_t *, void *));
1916 extern frentry_t *ipf_getrulen __P((ipf_main_softc_t *, int, char *,
1918 extern int ipf_ifpaddr __P((ipf_main_softc_t *, int, int, void *,
1919 i6addr_t *, i6addr_t *));
1920 extern void ipf_inet_mask_add __P((int, ipf_v4_masktab_t *));
1921 extern void ipf_inet_mask_del __P((int, ipf_v4_masktab_t *));
1923 extern void ipf_inet6_mask_add __P((int, i6addr_t *,
1924 ipf_v6_masktab_t *));
1925 extern void ipf_inet6_mask_del __P((int, i6addr_t *,
1926 ipf_v6_masktab_t *));
1928 extern int ipf_initialise __P((void));
1929 extern int ipf_lock __P((caddr_t, int *));
1930 extern int ipf_makefrip __P((int, ip_t *, fr_info_t *));
1931 extern int ipf_matchtag __P((ipftag_t *, ipftag_t *));
1932 extern int ipf_matchicmpqueryreply __P((int, icmpinfo_t *,
1933 struct icmp *, int));
1934 extern u_32_t ipf_newisn __P((fr_info_t *));
1935 extern u_short ipf_nextipid __P((fr_info_t *));
1936 extern u_int ipf_pcksum __P((fr_info_t *, int, u_int));
1937 extern void ipf_rule_expire __P((ipf_main_softc_t *));
1938 extern int ipf_scanlist __P((fr_info_t *, u_32_t));
1939 extern frentry_t *ipf_srcgrpmap __P((fr_info_t *, u_32_t *));
1940 extern int ipf_tcpudpchk __P((fr_ip_t *, frtuc_t *));
1941 extern int ipf_verifysrc __P((fr_info_t *fin));
1942 extern int ipf_zerostats __P((ipf_main_softc_t *, char *));
1943 extern int ipf_getnextrule __P((ipf_main_softc_t *, ipftoken_t *,
1945 extern int ipf_sync __P((ipf_main_softc_t *, void *));
1946 extern int ipf_token_deref __P((ipf_main_softc_t *, ipftoken_t *));
1947 extern void ipf_token_expire __P((ipf_main_softc_t *));
1948 extern ipftoken_t *ipf_token_find __P((ipf_main_softc_t *, int, int,
1950 extern int ipf_token_del __P((ipf_main_softc_t *, int, int,
1952 extern void ipf_token_mark_complete __P((ipftoken_t *));
1953 extern int ipf_genericiter __P((ipf_main_softc_t *, void *,
1955 #ifdef IPFILTER_LOOKUP
1956 extern void *ipf_resolvelookup __P((int, u_int, u_int,
1959 extern u_32_t ipf_random __P((void));
1961 extern int ipf_main_load __P((void));
1962 extern void *ipf_main_soft_create __P((void *));
1963 extern void ipf_main_soft_destroy __P((ipf_main_softc_t *));
1964 extern int ipf_main_soft_init __P((ipf_main_softc_t *));
1965 extern int ipf_main_soft_fini __P((ipf_main_softc_t *));
1966 extern int ipf_main_unload __P((void));
1967 extern int ipf_load_all __P((void));
1968 extern int ipf_unload_all __P((void));
1969 extern void ipf_destroy_all __P((ipf_main_softc_t *));
1970 extern ipf_main_softc_t *ipf_create_all __P((void *));
1971 extern int ipf_init_all __P((ipf_main_softc_t *));
1972 extern int ipf_fini_all __P((ipf_main_softc_t *));
1973 extern void ipf_log_soft_destroy __P((ipf_main_softc_t *, void *));
1974 extern void *ipf_log_soft_create __P((ipf_main_softc_t *));
1975 extern int ipf_log_soft_init __P((ipf_main_softc_t *, void *));
1976 extern int ipf_log_soft_fini __P((ipf_main_softc_t *, void *));
1977 extern int ipf_log_main_load __P((void));
1978 extern int ipf_log_main_unload __P((void));
1981 extern char ipfilter_version[];
1983 extern int icmptoicmp6types[ICMP_MAXTYPE+1];
1984 extern int icmptoicmp6unreach[ICMP_MAX_UNREACH];
1985 extern int icmpreplytype6[ICMP6_MAXTYPE + 1];
1987 #ifdef IPFILTER_COMPAT
1988 extern int ipf_in_compat __P((ipf_main_softc_t *, ipfobj_t *, void *,int));
1989 extern int ipf_out_compat __P((ipf_main_softc_t *, ipfobj_t *, void *));
1991 extern int icmpreplytype4[ICMP_MAXTYPE + 1];
1993 extern int ipf_ht_node_add __P((ipf_main_softc_t *, host_track_t *,
1995 extern int ipf_ht_node_del __P((host_track_t *, int, i6addr_t *));
1996 extern void ipf_rb_ht_flush __P((host_track_t *));
1997 extern void ipf_rb_ht_freenode __P((host_node_t *, void *));
1998 extern void ipf_rb_ht_init __P((host_track_t *));
2000 #endif /* __IP_FIL_H__ */