2 * Copyright (C) 1993-2002 by Darren Reed.
4 * See the IPFILTER.LICENCE file for details on licencing.
6 * @(#)ip_fil.h 1.35 6/5/96
7 * $Id: ip_fil.h,v 2.29.2.34 2002/10/01 15:23:37 darrenr Exp $
14 * Pathnames for various IP Filter control devices. Used by LKM
15 * and userland, so defined here.
17 #define IPNAT_NAME "/dev/ipnat"
18 #define IPSTATE_NAME "/dev/ipstate"
19 #define IPAUTH_NAME "/dev/ipauth"
22 # define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
25 #if defined(KERNEL) && !defined(_KERNEL)
38 # define offsetof(t,m) (int)((&((t *)0L)->m))
41 #if defined(__STDC__) || defined(__GNUC__)
42 # define SIOCADAFR _IOW('r', 60, struct frentry *)
43 # define SIOCRMAFR _IOW('r', 61, struct frentry *)
44 # define SIOCSETFF _IOW('r', 62, u_int)
45 # define SIOCGETFF _IOR('r', 63, u_int)
46 # define SIOCGETFS _IOWR('r', 64, struct friostat *)
47 # define SIOCIPFFL _IOWR('r', 65, int)
48 # define SIOCIPFFB _IOR('r', 66, int)
49 # define SIOCADIFR _IOW('r', 67, struct frentry *)
50 # define SIOCRMIFR _IOW('r', 68, struct frentry *)
51 # define SIOCSWAPA _IOR('r', 69, u_int)
52 # define SIOCINAFR _IOW('r', 70, struct frentry *)
53 # define SIOCINIFR _IOW('r', 71, struct frentry *)
54 # define SIOCFRENB _IOW('r', 72, u_int)
55 # define SIOCFRSYN _IOW('r', 73, u_int)
56 # define SIOCFRZST _IOWR('r', 74, struct friostat *)
57 # define SIOCZRLST _IOWR('r', 75, struct frentry *)
58 # define SIOCAUTHW _IOWR('r', 76, struct frauth *)
59 # define SIOCAUTHR _IOWR('r', 77, struct frauth *)
60 # define SIOCATHST _IOWR('r', 78, struct fr_authstat *)
61 # define SIOCSTLCK _IOWR('r', 79, u_int)
62 # define SIOCSTPUT _IOWR('r', 80, struct ipstate_save *)
63 # define SIOCSTGET _IOWR('r', 81, struct ipstate_save *)
64 # define SIOCSTGSZ _IOWR('r', 82, struct natget)
65 # define SIOCGFRST _IOWR('r', 83, struct ipfrstat *)
66 # define SIOCIPFL6 _IOWR('r', 84, int)
68 # define SIOCADAFR _IOW(r, 60, struct frentry *)
69 # define SIOCRMAFR _IOW(r, 61, struct frentry *)
70 # define SIOCSETFF _IOW(r, 62, u_int)
71 # define SIOCGETFF _IOR(r, 63, u_int)
72 # define SIOCGETFS _IOWR(r, 64, struct friostat *)
73 # define SIOCIPFFL _IOWR(r, 65, int)
74 # define SIOCIPFFB _IOR(r, 66, int)
75 # define SIOCADIFR _IOW(r, 67, struct frentry *)
76 # define SIOCRMIFR _IOW(r, 68, struct frentry *)
77 # define SIOCSWAPA _IOR(r, 69, u_int)
78 # define SIOCINAFR _IOW(r, 70, struct frentry *)
79 # define SIOCINIFR _IOW(r, 71, struct frentry *)
80 # define SIOCFRENB _IOW(r, 72, u_int)
81 # define SIOCFRSYN _IOW(r, 73, u_int)
82 # define SIOCFRZST _IOWR(r, 74, struct friostat *)
83 # define SIOCZRLST _IOWR(r, 75, struct frentry *)
84 # define SIOCAUTHW _IOWR(r, 76, struct frauth *)
85 # define SIOCAUTHR _IOWR(r, 77, struct frauth *)
86 # define SIOCATHST _IOWR(r, 78, struct fr_authstat *)
87 # define SIOCSTLCK _IOWR(r, 79, u_int)
88 # define SIOCSTPUT _IOWR(r, 80, struct ipstate_save *)
89 # define SIOCSTGET _IOWR(r, 81, struct ipstate_save *)
90 # define SIOCSTGSZ _IOWR(r, 82, struct natget)
91 # define SIOCGFRST _IOWR(r, 83, struct ipfrstat *)
92 # define SIOCIPFL6 _IOWR(r, 84, int)
94 #define SIOCADDFR SIOCADAFR
95 #define SIOCDELFR SIOCRMAFR
96 #define SIOCINSFR SIOCINAFR
99 typedef struct fr_ip {
100 u_32_t fi_v:4; /* IP version */
101 u_32_t fi_fl:4; /* packet flags */
102 u_32_t fi_tos:8; /* IP packet TOS */
103 u_32_t fi_ttl:8; /* IP packet TTL */
104 u_32_t fi_p:8; /* IP packet protocol */
105 union i6addr fi_src; /* source address from packet */
106 union i6addr fi_dst; /* destination address from packet */
107 u_32_t fi_optmsk; /* bitmask composed from IP options */
108 u_short fi_secmsk; /* bitmask composed from IP security options */
109 u_short fi_auth; /* authentication code from IP sec. options */
112 #define FI_OPTIONS (FF_OPTIONS >> 24)
113 #define FI_TCPUDP (FF_TCPUDP >> 24) /* TCP/UCP implied comparison*/
114 #define FI_FRAG (FF_FRAG >> 24)
115 #define FI_SHORT (FF_SHORT >> 24)
116 #define FI_CMP (FI_OPTIONS|FI_TCPUDP|FI_SHORT)
118 #define fi_saddr fi_src.in4.s_addr
119 #define fi_daddr fi_dst.in4.s_addr
123 * These are both used by the state and NAT code to indicate that one port or
124 * the other should be treated as a wildcard.
126 #define FI_W_SPORT 0x00000100
127 #define FI_W_DPORT 0x00000200
128 #define FI_WILDP (FI_W_SPORT|FI_W_DPORT)
129 #define FI_W_SADDR 0x00000400
130 #define FI_W_DADDR 0x00000800
131 #define FI_WILDA (FI_W_SADDR|FI_W_DADDR)
132 #define FI_NEWFR 0x00001000 /* Create a filter rule */
133 #define FI_IGNOREPKT 0x00002000 /* Do not treat as a real packet */
134 #define FI_NORULE 0x00004000 /* Not direct a result of a rule */
136 typedef struct fr_info {
137 void *fin_ifp; /* interface packet is `on' */
138 struct fr_ip fin_fi; /* IP Packet summary */
139 u_short fin_data[2]; /* TCP/UDP ports, ICMP code/type */
140 u_int fin_out; /* in or out ? 1 == out, 0 == in */
141 u_short fin_hlen; /* length of IP header in bytes */
142 u_char fin_rev; /* state only: 1 = reverse */
143 u_char fin_tcpf; /* TCP header flags (SYN, ACK, etc) */
144 u_int fin_icode; /* ICMP error to return */
145 u_32_t fin_rule; /* rule # last matched */
146 u_32_t fin_group; /* group number, -1 for none */
147 struct frentry *fin_fr; /* last matching rule */
148 char *fin_dp; /* start of data past IP header */
151 u_short fin_dlen; /* length of data portion of packet */
152 u_short fin_id; /* IP packet id field */
154 void *fin_mp; /* pointer to pointer to mbuf */
156 void *fin_qfm; /* pointer to mblk where pkt starts */
161 #define fin_v fin_fi.fi_v
162 #define fin_p fin_fi.fi_p
163 #define fin_saddr fin_fi.fi_saddr
164 #define fin_src fin_fi.fi_src.in4
165 #define fin_daddr fin_fi.fi_daddr
166 #define fin_dst fin_fi.fi_dst.in4
167 #define fin_fl fin_fi.fi_fl
170 * Size for compares on fr_info structures
172 #define FI_CSIZE offsetof(fr_info_t, fin_icode)
173 #define FI_LCSIZE offsetof(fr_info_t, fin_dp)
178 #define FM_BADSTATE 0x00000001
181 * Size for copying cache fr_info structure
183 #define FI_COPYSIZE offsetof(fr_info_t, fin_dp)
185 typedef struct frdest {
188 char fd_ifname[LIFNAMSIZ];
190 mb_t *fd_mp; /* cache resolver for to/dup-to */
194 #define fd_ip fd_ip6.in4
197 typedef struct frpcmp {
198 int frp_cmp; /* data for port comparisons */
199 u_short frp_port; /* top port for <> and >< */
200 u_short frp_top; /* top port for <> and >< */
203 typedef struct frtuc {
204 u_char ftu_tcpfm; /* tcp flags mask */
205 u_char ftu_tcpf; /* tcp flags */
210 #define ftu_scmp ftu_src.frp_cmp
211 #define ftu_dcmp ftu_dst.frp_cmp
212 #define ftu_sport ftu_src.frp_port
213 #define ftu_dport ftu_dst.frp_port
214 #define ftu_stop ftu_src.frp_top
215 #define ftu_dtop ftu_dst.frp_top
217 typedef struct frentry {
218 struct frentry *fr_next;
219 struct frentry *fr_grp;
220 int fr_ref; /* reference count - for grouping */
223 * These are only incremented when a packet matches this rule and
224 * it is the last match
229 * Fields after this may not change whilst in the kernel.
232 struct fr_ip fr_mip; /* mask structure */
235 u_short fr_icmpm; /* data for ICMP packets (mask) */
238 u_int fr_age[2]; /* aging for state */
240 u_32_t fr_group; /* group to which this rule belongs */
241 u_32_t fr_grhead; /* group # which this rule starts */
242 u_32_t fr_flags; /* per-rule flags && options (see below) */
243 u_int fr_skip; /* # of rules to skip */
244 u_int fr_loglevel; /* syslog log facility + priority */
245 int (*fr_func) __P((int, ip_t *, fr_info_t *)); /* call this function */
246 int fr_sap; /* For solaris only */
247 u_char fr_icode; /* return ICMP code */
248 char fr_ifnames[4][LIFNAMSIZ];
249 struct frdest fr_tif; /* "to" interface */
250 struct frdest fr_dif; /* duplicate packet interfaces */
251 u_int fr_cksum; /* checksum on filter rules for performance */
254 #define fr_v fr_ip.fi_v
255 #define fr_proto fr_ip.fi_p
256 #define fr_ttl fr_ip.fi_ttl
257 #define fr_tos fr_ip.fi_tos
258 #define fr_tcpfm fr_tuc.ftu_tcpfm
259 #define fr_tcpf fr_tuc.ftu_tcpf
260 #define fr_scmp fr_tuc.ftu_scmp
261 #define fr_dcmp fr_tuc.ftu_dcmp
262 #define fr_dport fr_tuc.ftu_dport
263 #define fr_sport fr_tuc.ftu_sport
264 #define fr_stop fr_tuc.ftu_stop
265 #define fr_dtop fr_tuc.ftu_dtop
266 #define fr_dst fr_ip.fi_dst.in4
267 #define fr_src fr_ip.fi_src.in4
268 #define fr_dmsk fr_mip.fi_dst.in4
269 #define fr_smsk fr_mip.fi_src.in4
270 #define fr_ifname fr_ifnames[0]
271 #define fr_oifname fr_ifnames[2]
272 #define fr_ifa fr_ifas[0]
273 #define fr_oifa fr_ifas[2]
275 #define FR_CMPSIZ (sizeof(struct frentry) - offsetof(frentry_t, fr_ip))
280 #define FR_BLOCK 0x00001 /* do not allow packet to pass */
281 #define FR_PASS 0x00002 /* allow packet to pass */
282 #define FR_OUTQUE 0x00004 /* outgoing packets */
283 #define FR_INQUE 0x00008 /* ingoing packets */
284 #define FR_LOG 0x00010 /* Log */
285 #define FR_LOGB 0x00011 /* Log-fail */
286 #define FR_LOGP 0x00012 /* Log-pass */
287 #define FR_NOTSRCIP 0x00020 /* not the src IP# */
288 #define FR_NOTDSTIP 0x00040 /* not the dst IP# */
289 #define FR_RETRST 0x00080 /* Return TCP RST packet - reset connection */
290 #define FR_RETICMP 0x00100 /* Return ICMP unreachable packet */
291 #define FR_FAKEICMP 0x00180 /* Return ICMP unreachable with fake source */
292 #define FR_NOMATCH 0x00200 /* no match occured */
293 #define FR_ACCOUNT 0x00400 /* count packet bytes */
294 #define FR_KEEPFRAG 0x00800 /* keep fragment information */
295 #define FR_KEEPSTATE 0x01000 /* keep `connection' state information */
296 #define FR_INACTIVE 0x02000
297 #define FR_QUICK 0x04000 /* match & stop processing list */
298 #define FR_FASTROUTE 0x08000 /* bypass normal routing */
299 #define FR_CALLNOW 0x10000 /* call another function (fr_func) if matches */
300 #define FR_DUP 0x20000 /* duplicate packet */
301 #define FR_LOGORBLOCK 0x40000 /* block the packet if it can't be logged */
302 #define FR_LOGBODY 0x80000 /* Log the body */
303 #define FR_LOGFIRST 0x100000 /* Log the first byte if state held */
304 #define FR_AUTH 0x200000 /* use authentication */
305 #define FR_PREAUTH 0x400000 /* require preauthentication */
306 #define FR_DONTCACHE 0x800000 /* don't cache the result */
308 #define FR_LOGMASK (FR_LOG|FR_LOGP|FR_LOGB)
309 #define FR_RETMASK (FR_RETICMP|FR_RETRST|FR_FAKEICMP)
312 * These correspond to #define's for FI_* and are stored in fr_flags
314 #define FF_OPTIONS 0x01000000
315 #define FF_TCPUDP 0x02000000
316 #define FF_FRAG 0x04000000
317 #define FF_SHORT 0x08000000
319 * recognized flags for SIOCGETFF and SIOCSETFF, and get put in fr_flags
321 #define FF_LOGPASS 0x10000000
322 #define FF_LOGBLOCK 0x20000000
323 #define FF_LOGNOMATCH 0x40000000
324 #define FF_LOGGING (FF_LOGPASS|FF_LOGBLOCK|FF_LOGNOMATCH)
325 #define FF_BLOCKNONIP 0x80000000 /* Solaris2 Only */
331 #define FR_GREATERT 4
333 #define FR_GREATERTE 6
334 #define FR_OUTRANGE 7
337 typedef struct filterstats {
338 u_long fr_pass; /* packets allowed */
339 u_long fr_block; /* packets denied */
340 u_long fr_nom; /* packets which don't match any rule */
341 u_long fr_short; /* packets which are short */
342 u_long fr_ppkl; /* packets allowed and logged */
343 u_long fr_bpkl; /* packets denied and logged */
344 u_long fr_npkl; /* packets unmatched and logged */
345 u_long fr_pkl; /* packets logged */
346 u_long fr_skip; /* packets to be logged but buffer full */
347 u_long fr_ret; /* packets for which a return is sent */
348 u_long fr_acct; /* packets for which counting was performed */
349 u_long fr_bnfr; /* bad attempts to allocate fragment state */
350 u_long fr_nfr; /* new fragment state kept */
351 u_long fr_cfr; /* add new fragment state but complete pkt */
352 u_long fr_bads; /* bad attempts to allocate packet state */
353 u_long fr_ads; /* new packet state kept */
354 u_long fr_chit; /* cached hit */
355 u_long fr_tcpbad; /* TCP checksum check failures */
356 u_long fr_pull[2]; /* good and bad pullup attempts */
357 u_long fr_badsrc; /* source received doesn't match route */
358 u_long fr_badttl; /* TTL in packet doesn't reach minimum */
360 u_long fr_notdata; /* PROTO/PCPROTO that have no data */
361 u_long fr_nodata; /* mblks that have no data */
362 u_long fr_bad; /* bad IP packets to the filter */
363 u_long fr_notip; /* packets passed through no on ip queue */
364 u_long fr_drop; /* packets dropped - no info for them! */
365 u_long fr_copy; /* messages copied due to db_ref > 1 */
367 u_long fr_ipv6[2]; /* IPv6 packets in/out */
373 typedef struct friostat {
374 struct filterstats f_st[2];
375 struct frentry *f_fin[2];
376 struct frentry *f_fout[2];
377 struct frentry *f_acctin[2];
378 struct frentry *f_acctout[2];
379 struct frentry *f_fin6[2];
380 struct frentry *f_fout6[2];
381 struct frentry *f_acctin6[2];
382 struct frentry *f_acctout6[2];
383 struct frentry *f_auth;
384 struct frgroup *f_groups[3][2];
386 int f_defpass; /* default pass - from fr_pass */
387 char f_active; /* 1 or 0 - active rule set */
388 char f_running; /* 1 if running, else 0 */
389 char f_logging; /* 1 if enabled, else 0 */
390 char f_version[32]; /* version string */
394 typedef struct optlist {
401 * Group list structure.
403 typedef struct frgroup {
405 struct frgroup *fg_next;
406 struct frentry *fg_head;
407 struct frentry **fg_start;
412 * Log structure. Each packet header logged is prepended by one of these.
413 * Following this in the log records read from the device will be an ipflog
414 * structure which is then followed by any packet data.
416 typedef struct iplog {
419 struct timeval ipl_tv;
421 struct iplog *ipl_next;
424 #define ipl_sec ipl_tv.tv_sec
425 #define ipl_usec ipl_tv.tv_usec
427 #define IPL_MAGIC 0x49504c4d /* 'IPLM' */
428 #define IPLOG_SIZE sizeof(iplog_t)
430 typedef struct ipflog {
431 #if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
432 (defined(OpenBSD) && (OpenBSD >= 199603))
433 char fl_ifname[LIFNAMSIZ];
436 char fl_ifname[LIFNAMSIZ];
438 u_char fl_plen; /* extra data after hlen */
439 u_char fl_hlen; /* length of IP headers saved */
440 u_short fl_loglevel; /* syslog log level */
449 #ifndef ICMP_UNREACH_FILTER
450 # define ICMP_UNREACH_FILTER 13
454 # define IPF_LOGGING 0
456 #ifndef IPF_DEFAULT_PASS
457 # define IPF_DEFAULT_PASS FR_PASS
460 #define IPMINLEN(i, h) ((i)->ip_len >= ((i)->ip_hl * 4 + sizeof(struct h)))
461 #define IPLLOGSIZE 8192
463 #define IPF_OPTCOPY 0x07ff00 /* bit mask of copied options */
466 * Device filenames for reading log information. Use ipf on Solaris2 because
467 * ipl is already a name used by something else.
471 # define IPL_NAME "/dev/ipf"
473 # define IPL_NAME "/dev/ipl"
476 #define IPL_NAT IPNAT_NAME
477 #define IPL_STATE IPSTATE_NAME
478 #define IPL_AUTH IPAUTH_NAME
480 #define IPL_LOGIPF 0 /* Minor device #'s for accessing logs */
482 #define IPL_LOGSTATE 2
483 #define IPL_LOGAUTH 3
486 #if !defined(CDEV_MAJOR) && defined (__FreeBSD_version) && \
487 (__FreeBSD_version >= 220000)
488 # define CDEV_MAJOR 79
492 * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns
493 * on those hooks. We don't need any special mods in non-IP Filter code
496 #if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \
497 (defined(NetBSD1_2) && NetBSD1_2 > 1)
498 # if (NetBSD >= 199905)
508 extern char *get_ifname __P((struct ifnet *));
509 extern int fr_check __P((ip_t *, int, void *, int, mb_t **));
510 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **));
511 extern int send_reset __P((ip_t *, fr_info_t *));
512 extern int send_icmp_err __P((ip_t *, int, fr_info_t *, int));
513 extern int ipf_log __P((void));
514 extern struct ifnet *get_unit __P((char *, int));
515 extern int mbuflen __P((mb_t *));
516 # if defined(__NetBSD__) || defined(__OpenBSD__) || \
517 (_BSDI_VERSION >= 199701) || (__FreeBSD_version >= 300000)
518 extern int iplioctl __P((dev_t, u_long, caddr_t, int));
520 extern int iplioctl __P((dev_t, int, caddr_t, int));
522 extern int iplopen __P((dev_t, int));
523 extern int iplclose __P((dev_t, int));
524 #else /* #ifndef _KERNEL */
525 # if defined(__NetBSD__) && defined(PFIL_HOOKS)
526 extern void ipfilterattach __P((int));
528 extern int iplattach __P((void));
529 extern int ipl_enable __P((void));
530 extern int ipl_disable __P((void));
531 extern int send_icmp_err __P((ip_t *, int, fr_info_t *, int));
532 extern int send_reset __P((ip_t *, fr_info_t *));
534 extern int fr_check __P((ip_t *, int, void *, int, qif_t *, mb_t **));
535 extern int (*fr_checkp) __P((ip_t *, int, void *,
536 int, qif_t *, mb_t **));
538 extern int iplioctl __P((dev_t, int, intptr_t, int, cred_t *, int *));
540 extern int iplioctl __P((dev_t, int, int *, int, cred_t *, int *));
542 extern int iplopen __P((dev_t *, int, int, cred_t *));
543 extern int iplclose __P((dev_t, int, int, cred_t *));
544 extern int ipfsync __P((void));
545 extern int ipfr_fastroute __P((ip_t *, mblk_t *, mblk_t **,
546 fr_info_t *, frdest_t *));
547 extern void copyin_mblk __P((mblk_t *, size_t, size_t, char *));
548 extern void copyout_mblk __P((mblk_t *, size_t, size_t, char *));
549 extern int fr_qin __P((queue_t *, mblk_t *));
550 extern int fr_qout __P((queue_t *, mblk_t *));
551 extern int iplread __P((dev_t, struct uio *, cred_t *));
553 extern int fr_check __P((ip_t *, int, void *, int, mb_t **));
554 extern int (*fr_checkp) __P((ip_t *, int, void *, int, mb_t **));
555 extern int ipfr_fastroute __P((mb_t *, mb_t **, fr_info_t *, frdest_t *));
556 extern size_t mbufchainlen __P((mb_t *));
558 # include <sys/cred.h>
559 extern int iplioctl __P((dev_t, int, caddr_t, int, cred_t *, int *));
560 extern int iplopen __P((dev_t *, int, int, cred_t *));
561 extern int iplclose __P((dev_t, int, int, cred_t *));
562 extern int iplread __P((dev_t, struct uio *, cred_t *));
563 extern int ipfsync __P((void));
564 extern int ipfilter_sgi_attach __P((void));
565 extern void ipfilter_sgi_detach __P((void));
566 extern void ipfilter_sgi_intfsync __P((void));
569 extern int iplidentify __P((char *));
571 # if (_BSDI_VERSION >= 199510) || (__FreeBSD_version >= 220000) || \
572 (NetBSD >= 199511) || defined(__OpenBSD__)
573 # if defined(__NetBSD__) || (_BSDI_VERSION >= 199701) || \
574 defined(__OpenBSD__) || (__FreeBSD_version >= 300000)
575 extern int iplioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
577 extern int iplioctl __P((dev_t, int, caddr_t, int, struct proc *));
579 extern int iplopen __P((dev_t, int, int, struct proc *));
580 extern int iplclose __P((dev_t, int, int, struct proc *));
583 extern int iplopen __P((dev_t, int));
584 extern int iplclose __P((dev_t, int));
585 extern int iplioctl __P((dev_t, int, caddr_t, int));
587 extern int iplioctl(struct inode *, struct file *, u_int, u_long);
588 extern int iplopen __P((struct inode *, struct file *));
589 extern void iplclose __P((struct inode *, struct file *));
591 # endif /* (_BSDI_VERSION >= 199510) */
593 extern int iplread __P((dev_t, struct uio *, int));
596 extern int iplread __P((dev_t, struct uio *));
598 extern int iplread(struct inode *, struct file *, char *, int);
600 # endif /* BSD >= 199306 */
602 # endif /* SOLARIS */
603 #endif /* #ifndef _KERNEL */
605 extern char *memstr __P((char *, char *, int, int));
606 extern void fixskip __P((frentry_t **, frentry_t *, int));
607 extern int countbits __P((u_32_t));
608 extern int ipldetach __P((void));
609 extern u_short ipf_cksum __P((u_short *, int));
610 extern int ircopyptr __P((void *, void *, size_t));
611 extern int iwcopyptr __P((void *, void *, size_t));
613 extern void ipflog_init __P((void));
614 extern int ipflog_clear __P((minor_t));
615 extern int ipflog __P((u_int, ip_t *, fr_info_t *, mb_t *));
616 extern int ipllog __P((int, fr_info_t *, void **, size_t *, int *, int));
617 extern int ipflog_read __P((minor_t, struct uio *));
619 extern int frflush __P((minor_t, int, int));
620 extern void frsync __P((void));
621 extern frgroup_t *fr_addgroup __P((u_32_t, frentry_t *, minor_t, int));
622 extern void fr_delgroup __P((u_32_t, u_32_t, minor_t, int));
623 extern frgroup_t *fr_findgroup __P((u_32_t, u_32_t, minor_t, int,
626 extern int fr_copytolog __P((int, char *, int));
627 extern void fr_forgetifp __P((void *));
628 extern void fr_getstat __P((struct friostat *));
629 extern int fr_ifpaddr __P((int, void *, struct in_addr *));
630 extern int fr_lock __P((caddr_t, int *));
631 extern void fr_makefrip __P((int, ip_t *, fr_info_t *));
632 extern u_short fr_tcpsum __P((mb_t *, ip_t *, tcphdr_t *));
633 extern int fr_scanlist __P((u_32_t, ip_t *, fr_info_t *, void *));
634 extern int fr_tcpudpchk __P((frtuc_t *, fr_info_t *));
635 extern int fr_verifysrc __P((struct in_addr, void *));
637 extern int ipl_unreach;
638 extern int fr_running;
639 extern u_long ipl_frouteok[2];
642 extern int fr_active;
643 extern int fr_chksrc;
644 extern int fr_minttl;
645 extern int fr_minttllog;
646 extern fr_info_t frcache[2];
647 extern char ipfilter_version[];
648 extern iplog_t **iplh[IPL_LOGMAX+1], *iplt[IPL_LOGMAX+1];
649 extern size_t iplused[IPL_LOGMAX + 1];
650 extern struct frentry *ipfilter[2][2], *ipacct[2][2];
652 extern struct frentry *ipfilter6[2][2], *ipacct6[2][2];
653 extern int icmptoicmp6types[ICMP_MAXTYPE+1];
654 extern int icmptoicmp6unreach[ICMP_MAX_UNREACH];
656 extern struct frgroup *ipfgroups[3][2];
657 extern struct filterstats frstats[];
659 #endif /* __IP_FIL_H__ */