1 /* $OpenBSD: pf_if.c,v 1.46 2006/12/13 09:01:59 itojun Exp $ */
4 * Copyright 2005 Henning Brauer <henning@openbsd.org>
5 * Copyright 2005 Ryan McBride <mcbride@openbsd.org>
6 * Copyright (c) 2001 Daniel Hartmeier
7 * Copyright (c) 2003 Cedric Berger
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
14 * - Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * - Redistributions in binary form must reproduce the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer in the documentation and/or other materials provided
19 * with the distribution.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
35 #if defined(__FreeBSD__)
37 #include "opt_inet6.h"
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
43 #include <sys/param.h>
44 #include <sys/systm.h>
46 #include <sys/malloc.h>
49 #include <sys/filio.h>
50 #include <sys/socket.h>
51 #include <sys/socketvar.h>
52 #include <sys/kernel.h>
54 #include <sys/device.h>
59 #include <net/if_types.h>
61 #include <netinet/in.h>
62 #include <netinet/in_var.h>
63 #include <netinet/in_systm.h>
64 #include <netinet/ip.h>
65 #include <netinet/ip_var.h>
67 #include <net/pfvar.h>
70 #include <netinet/ip6.h>
73 struct pfi_kif *pfi_all = NULL;
74 struct pfi_statehead pfi_statehead;
76 uma_zone_t pfi_addr_pl;
78 struct pool pfi_addr_pl;
80 struct pfi_ifhead pfi_ifs;
82 struct pfr_addr *pfi_buffer;
86 eventhandler_tag pfi_attach_cookie = NULL;
87 eventhandler_tag pfi_detach_cookie = NULL;
88 eventhandler_tag pfi_attach_group_cookie = NULL;
89 eventhandler_tag pfi_change_group_cookie = NULL;
90 eventhandler_tag pfi_detach_group_cookie = NULL;
91 eventhandler_tag pfi_ifaddr_event_cookie = NULL;
94 void pfi_kif_update(struct pfi_kif *);
95 void pfi_dynaddr_update(struct pfi_dynaddr *dyn);
96 void pfi_table_update(struct pfr_ktable *, struct pfi_kif *,
98 void pfi_kifaddr_update(void *);
99 void pfi_instance_add(struct ifnet *, int, int);
100 void pfi_address_add(struct sockaddr *, int, int);
101 int pfi_if_compare(struct pfi_kif *, struct pfi_kif *);
102 int pfi_skip_if(const char *, struct pfi_kif *);
103 int pfi_unmask(void *);
105 void pfi_attach_ifnet_event(void * __unused, struct ifnet *);
106 void pfi_detach_ifnet_event(void * __unused, struct ifnet *);
107 void pfi_attach_group_event(void * __unused, struct ifg_group *);
108 void pfi_change_group_event(void * __unused, char *);
109 void pfi_detach_group_event(void * __unused, struct ifg_group *);
110 void pfi_ifaddr_event(void * __unused, struct ifnet *);
112 extern struct ifgrouphead ifg_head;
115 RB_PROTOTYPE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
116 RB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
118 #define PFI_BUFFER_MAX 0x10000
119 #define PFI_MTYPE M_IFADDR
124 if (pfi_all != NULL) /* already initialized */
127 TAILQ_INIT(&pfi_statehead);
129 pool_init(&pfi_addr_pl, sizeof(struct pfi_dynaddr), 0, 0, 0,
130 "pfiaddrpl", &pool_allocator_nointr);
133 pfi_buffer = malloc(pfi_buffer_max * sizeof(*pfi_buffer),
134 PFI_MTYPE, M_WAITOK);
136 if ((pfi_all = pfi_kif_get(IFG_ALL)) == NULL)
137 panic("pfi_kif_get for pfi_all failed");
140 struct ifg_group *ifg;
144 TAILQ_FOREACH(ifg, &ifg_head, ifg_next)
145 pfi_attach_ifgroup(ifg);
146 TAILQ_FOREACH(ifp, &ifnet, if_link)
147 pfi_attach_ifnet(ifp);
150 pfi_attach_cookie = EVENTHANDLER_REGISTER(ifnet_arrival_event,
151 pfi_attach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
152 pfi_detach_cookie = EVENTHANDLER_REGISTER(ifnet_departure_event,
153 pfi_detach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
154 pfi_attach_group_cookie = EVENTHANDLER_REGISTER(group_attach_event,
155 pfi_attach_group_event, NULL, EVENTHANDLER_PRI_ANY);
156 pfi_change_group_cookie = EVENTHANDLER_REGISTER(group_change_event,
157 pfi_change_group_event, NULL, EVENTHANDLER_PRI_ANY);
158 pfi_detach_group_cookie = EVENTHANDLER_REGISTER(group_detach_event,
159 pfi_detach_group_event, NULL, EVENTHANDLER_PRI_ANY);
160 pfi_ifaddr_event_cookie = EVENTHANDLER_REGISTER(ifaddr_event,
161 pfi_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY);
172 EVENTHANDLER_DEREGISTER(ifnet_arrival_event, pfi_attach_cookie);
173 EVENTHANDLER_DEREGISTER(ifnet_departure_event, pfi_detach_cookie);
174 EVENTHANDLER_DEREGISTER(group_attach_event, pfi_attach_group_cookie);
175 EVENTHANDLER_DEREGISTER(group_change_event, pfi_change_group_cookie);
176 EVENTHANDLER_DEREGISTER(group_detach_event, pfi_detach_group_cookie);
177 EVENTHANDLER_DEREGISTER(ifaddr_event, pfi_ifaddr_event_cookie);
181 while ((p = RB_MIN(pfi_ifhead, &pfi_ifs))) {
182 if (p->pfik_rules || p->pfik_states) {
183 printf("pfi_cleanup: dangling refs for %s\n",
187 RB_REMOVE(pfi_ifhead, &pfi_ifs, p);
191 free(pfi_buffer, PFI_MTYPE);
196 pfi_kif_get(const char *kif_name)
199 struct pfi_kif_cmp s;
201 bzero(&s, sizeof(s));
202 strlcpy(s.pfik_name, kif_name, sizeof(s.pfik_name));
203 if ((kif = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&s)) != NULL)
208 if ((kif = malloc(sizeof(*kif), PFI_MTYPE, M_NOWAIT)) == NULL)
210 if ((kif = malloc(sizeof(*kif), PFI_MTYPE, M_DONTWAIT)) == NULL)
214 bzero(kif, sizeof(*kif));
215 strlcpy(kif->pfik_name, kif_name, sizeof(kif->pfik_name));
218 * It seems that the value of time_second is in unintialzied state
219 * when pf sets interface statistics clear time in boot phase if pf
220 * was statically linked to kernel. Instead of setting the bogus
221 * time value have pfi_get_ifaces handle this case. In
222 * pfi_get_ifaces it uses boottime.tv_sec if it sees the time is 0.
224 kif->pfik_tzero = time_second > 1 ? time_second : 0;
226 kif->pfik_tzero = time_second;
228 TAILQ_INIT(&kif->pfik_dynaddrs);
230 RB_INSERT(pfi_ifhead, &pfi_ifs, kif);
235 pfi_kif_ref(struct pfi_kif *kif, enum pfi_kif_refs what)
238 case PFI_KIF_REF_RULE:
241 case PFI_KIF_REF_STATE:
242 if (!kif->pfik_states++)
243 TAILQ_INSERT_TAIL(&pfi_statehead, kif, pfik_w_states);
246 panic("pfi_kif_ref with unknown type");
251 pfi_kif_unref(struct pfi_kif *kif, enum pfi_kif_refs what)
257 case PFI_KIF_REF_NONE:
259 case PFI_KIF_REF_RULE:
260 if (kif->pfik_rules <= 0) {
261 printf("pfi_kif_unref: rules refcount <= 0\n");
266 case PFI_KIF_REF_STATE:
267 if (kif->pfik_states <= 0) {
268 printf("pfi_kif_unref: state refcount <= 0\n");
271 if (!--kif->pfik_states)
272 TAILQ_REMOVE(&pfi_statehead, kif, pfik_w_states);
275 panic("pfi_kif_unref with unknown type");
278 if (kif->pfik_ifp != NULL || kif->pfik_group != NULL || kif == pfi_all)
281 if (kif->pfik_rules || kif->pfik_states)
284 RB_REMOVE(pfi_ifhead, &pfi_ifs, kif);
285 free(kif, PFI_MTYPE);
289 pfi_kif_match(struct pfi_kif *rule_kif, struct pfi_kif *packet_kif)
293 if (rule_kif == NULL || rule_kif == packet_kif)
296 if (rule_kif->pfik_group != NULL)
297 TAILQ_FOREACH(p, &packet_kif->pfik_ifp->if_groups, ifgl_next)
298 if (p->ifgl_group == rule_kif->pfik_group)
305 pfi_attach_ifnet(struct ifnet *ifp)
313 if ((kif = pfi_kif_get(ifp->if_xname)) == NULL)
314 panic("pfi_kif_get failed");
317 ifp->if_pf_kif = (caddr_t)kif;
320 if ((kif->pfik_ah_cookie = hook_establish(ifp->if_addrhooks, 1,
321 pfi_kifaddr_update, kif)) == NULL)
322 panic("pfi_attach_ifnet: cannot allocate '%s' address hook",
332 pfi_detach_ifnet(struct ifnet *ifp)
337 if ((kif = (struct pfi_kif *)ifp->if_pf_kif) == NULL)
343 hook_disestablish(ifp->if_addrhooks, kif->pfik_ah_cookie);
347 kif->pfik_ifp = NULL;
348 ifp->if_pf_kif = NULL;
349 pfi_kif_unref(kif, PFI_KIF_REF_NONE);
354 pfi_attach_ifgroup(struct ifg_group *ifg)
362 if ((kif = pfi_kif_get(ifg->ifg_group)) == NULL)
363 panic("pfi_kif_get failed");
365 kif->pfik_group = ifg;
366 ifg->ifg_pf_kif = (caddr_t)kif;
372 pfi_detach_ifgroup(struct ifg_group *ifg)
377 if ((kif = (struct pfi_kif *)ifg->ifg_pf_kif) == NULL)
383 kif->pfik_group = NULL;
384 ifg->ifg_pf_kif = NULL;
385 pfi_kif_unref(kif, PFI_KIF_REF_NONE);
390 pfi_group_change(const char *group)
397 if ((kif = pfi_kif_get(group)) == NULL)
398 panic("pfi_kif_get failed");
406 pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af)
411 switch (dyn->pfid_acnt4) {
415 return (PF_MATCHA(0, &dyn->pfid_addr4,
416 &dyn->pfid_mask4, a, AF_INET));
418 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET));
424 switch (dyn->pfid_acnt6) {
428 return (PF_MATCHA(0, &dyn->pfid_addr6,
429 &dyn->pfid_mask6, a, AF_INET6));
431 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6));
441 pfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af)
443 struct pfi_dynaddr *dyn;
444 char tblname[PF_TABLE_NAME_SIZE];
445 struct pf_ruleset *ruleset = NULL;
448 if (aw->type != PF_ADDR_DYNIFTL)
450 if ((dyn = pool_get(&pfi_addr_pl, PR_NOWAIT)) == NULL)
452 bzero(dyn, sizeof(*dyn));
455 if (!strcmp(aw->v.ifname, "self"))
456 dyn->pfid_kif = pfi_kif_get(IFG_ALL);
458 dyn->pfid_kif = pfi_kif_get(aw->v.ifname);
459 if (dyn->pfid_kif == NULL) {
463 pfi_kif_ref(dyn->pfid_kif, PFI_KIF_REF_RULE);
465 dyn->pfid_net = pfi_unmask(&aw->v.a.mask);
466 if (af == AF_INET && dyn->pfid_net == 32)
468 strlcpy(tblname, aw->v.ifname, sizeof(tblname));
469 if (aw->iflags & PFI_AFLAG_NETWORK)
470 strlcat(tblname, ":network", sizeof(tblname));
471 if (aw->iflags & PFI_AFLAG_BROADCAST)
472 strlcat(tblname, ":broadcast", sizeof(tblname));
473 if (aw->iflags & PFI_AFLAG_PEER)
474 strlcat(tblname, ":peer", sizeof(tblname));
475 if (aw->iflags & PFI_AFLAG_NOALIAS)
476 strlcat(tblname, ":0", sizeof(tblname));
477 if (dyn->pfid_net != 128)
478 snprintf(tblname + strlen(tblname),
479 sizeof(tblname) - strlen(tblname), "/%d", dyn->pfid_net);
480 if ((ruleset = pf_find_or_create_ruleset(PF_RESERVED_ANCHOR)) == NULL) {
485 if ((dyn->pfid_kt = pfr_attach_table(ruleset, tblname)) == NULL) {
490 dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE;
491 dyn->pfid_iflags = aw->iflags;
494 TAILQ_INSERT_TAIL(&dyn->pfid_kif->pfik_dynaddrs, dyn, entry);
496 pfi_kif_update(dyn->pfid_kif);
501 if (dyn->pfid_kt != NULL)
502 pfr_detach_table(dyn->pfid_kt);
504 pf_remove_if_empty_ruleset(ruleset);
505 if (dyn->pfid_kif != NULL)
506 pfi_kif_unref(dyn->pfid_kif, PFI_KIF_REF_RULE);
507 pool_put(&pfi_addr_pl, dyn);
513 pfi_kif_update(struct pfi_kif *kif)
515 struct ifg_list *ifgl;
516 struct pfi_dynaddr *p;
518 /* update all dynaddr */
519 TAILQ_FOREACH(p, &kif->pfik_dynaddrs, entry)
520 pfi_dynaddr_update(p);
522 /* again for all groups kif is member of */
523 if (kif->pfik_ifp != NULL)
524 TAILQ_FOREACH(ifgl, &kif->pfik_ifp->if_groups, ifgl_next)
525 pfi_kif_update((struct pfi_kif *)
526 ifgl->ifgl_group->ifg_pf_kif);
530 pfi_dynaddr_update(struct pfi_dynaddr *dyn)
533 struct pfr_ktable *kt;
535 if (dyn == NULL || dyn->pfid_kif == NULL || dyn->pfid_kt == NULL)
536 panic("pfi_dynaddr_update");
541 if (kt->pfrkt_larg != pfi_update) {
542 /* this table needs to be brought up-to-date */
543 pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags);
544 kt->pfrkt_larg = pfi_update;
546 pfr_dynaddr_update(kt, dyn);
550 pfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags)
553 struct ifg_member *ifgm;
557 if (kif->pfik_ifp != NULL)
558 pfi_instance_add(kif->pfik_ifp, net, flags);
559 else if (kif->pfik_group != NULL)
560 TAILQ_FOREACH(ifgm, &kif->pfik_group->ifg_members, ifgm_next)
561 pfi_instance_add(ifgm->ifgm_ifp, net, flags);
563 if ((e = pfr_set_addrs(&kt->pfrkt_t, pfi_buffer, pfi_buffer_cnt, &size2,
564 NULL, NULL, NULL, 0, PFR_TFLAG_ALLMASK)))
565 printf("pfi_table_update: cannot set %d new addresses "
566 "into table %s: %d\n", pfi_buffer_cnt, kt->pfrkt_name, e);
570 pfi_instance_add(struct ifnet *ifp, int net, int flags)
573 int got4 = 0, got6 = 0;
578 TAILQ_FOREACH(ia, &ifp->if_addrlist, ifa_list) {
579 if (ia->ifa_addr == NULL)
581 af = ia->ifa_addr->sa_family;
582 if (af != AF_INET && af != AF_INET6)
586 * XXX: For point-to-point interfaces, (ifname:0) and IPv4,
587 * jump over addresses without a proper route to work
588 * around a problem with ppp not fully removing the
589 * address used during IPCP.
591 if ((ifp->if_flags & IFF_POINTOPOINT) &&
592 !(ia->ifa_flags & IFA_ROUTE) &&
593 (flags & PFI_AFLAG_NOALIAS) && (af == AF_INET))
596 if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6)
598 if ((flags & PFI_AFLAG_BROADCAST) &&
599 !(ifp->if_flags & IFF_BROADCAST))
601 if ((flags & PFI_AFLAG_PEER) &&
602 !(ifp->if_flags & IFF_POINTOPOINT))
604 if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 &&
605 IN6_IS_ADDR_LINKLOCAL(
606 &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr))
608 if (flags & PFI_AFLAG_NOALIAS) {
609 if (af == AF_INET && got4)
611 if (af == AF_INET6 && got6)
616 else if (af == AF_INET6)
619 if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) {
621 net2 = pfi_unmask(&((struct sockaddr_in *)
622 ia->ifa_netmask)->sin_addr);
623 else if (af == AF_INET6)
624 net2 = pfi_unmask(&((struct sockaddr_in6 *)
625 ia->ifa_netmask)->sin6_addr);
627 if (af == AF_INET && net2 > 32)
629 if (flags & PFI_AFLAG_BROADCAST)
630 pfi_address_add(ia->ifa_broadaddr, af, net2);
631 else if (flags & PFI_AFLAG_PEER)
632 pfi_address_add(ia->ifa_dstaddr, af, net2);
634 pfi_address_add(ia->ifa_addr, af, net2);
639 pfi_address_add(struct sockaddr *sa, int af, int net)
644 if (pfi_buffer_cnt >= pfi_buffer_max) {
645 int new_max = pfi_buffer_max * 2;
647 if (new_max > PFI_BUFFER_MAX) {
648 printf("pfi_address_add: address buffer full (%d/%d)\n",
649 pfi_buffer_cnt, PFI_BUFFER_MAX);
652 p = malloc(new_max * sizeof(*pfi_buffer), PFI_MTYPE,
659 printf("pfi_address_add: no memory to grow buffer "
660 "(%d/%d)\n", pfi_buffer_cnt, PFI_BUFFER_MAX);
663 memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof(*pfi_buffer));
664 /* no need to zero buffer */
665 free(pfi_buffer, PFI_MTYPE);
667 pfi_buffer_max = new_max;
669 if (af == AF_INET && net > 32)
671 p = pfi_buffer + pfi_buffer_cnt++;
672 bzero(p, sizeof(*p));
676 p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr;
677 else if (af == AF_INET6) {
678 p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr;
679 if (IN6_IS_SCOPE_EMBED(&p->pfra_ip6addr))
680 p->pfra_ip6addr.s6_addr16[1] = 0;
682 /* mask network address bits */
684 ((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8));
685 for (i = (p->pfra_net+7)/8; i < sizeof(p->pfra_u); i++)
690 pfi_dynaddr_remove(struct pf_addr_wrap *aw)
694 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
695 aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL)
699 TAILQ_REMOVE(&aw->p.dyn->pfid_kif->pfik_dynaddrs, aw->p.dyn, entry);
700 pfi_kif_unref(aw->p.dyn->pfid_kif, PFI_KIF_REF_RULE);
701 aw->p.dyn->pfid_kif = NULL;
702 pfr_detach_table(aw->p.dyn->pfid_kt);
703 aw->p.dyn->pfid_kt = NULL;
704 pool_put(&pfi_addr_pl, aw->p.dyn);
710 pfi_dynaddr_copyout(struct pf_addr_wrap *aw)
712 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
713 aw->p.dyn->pfid_kif == NULL)
715 aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6;
719 pfi_kifaddr_update(void *v)
722 struct pfi_kif *kif = (struct pfi_kif *)v;
731 pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q)
733 return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ));
737 pfi_fill_oldstatus(struct pf_status *pfs)
740 struct pfi_kif_cmp key;
743 strlcpy(key.pfik_name, pfs->ifname, sizeof(key.pfik_name));
745 p = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&key);
750 bzero(pfs->pcounters, sizeof(pfs->pcounters));
751 bzero(pfs->bcounters, sizeof(pfs->bcounters));
752 for (i = 0; i < 2; i++)
753 for (j = 0; j < 2; j++)
754 for (k = 0; k < 2; k++) {
755 pfs->pcounters[i][j][k] =
756 p->pfik_packets[i][j][k];
757 pfs->bcounters[i][j] +=
758 p->pfik_bytes[i][j][k];
764 pfi_clr_istats(const char *name)
770 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
771 if (pfi_skip_if(name, p))
773 bzero(p->pfik_packets, sizeof(p->pfik_packets));
774 bzero(p->pfik_bytes, sizeof(p->pfik_bytes));
775 p->pfik_tzero = time_second;
783 pfi_get_ifaces(const char *name, struct pfi_kif *buf, int *size)
785 struct pfi_kif *p, *nextp;
792 for (p = RB_MIN(pfi_ifhead, &pfi_ifs); p; p = nextp) {
793 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
794 if (pfi_skip_if(name, p))
798 p->pfik_tzero = time_second;
799 pfi_kif_ref(p, PFI_KIF_REF_RULE);
801 PF_COPYOUT(p, buf++, sizeof(*buf), error);
804 if (copyout(p, buf++, sizeof(*buf))) {
806 pfi_kif_unref(p, PFI_KIF_REF_RULE);
810 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
811 pfi_kif_unref(p, PFI_KIF_REF_RULE);
820 pfi_skip_if(const char *filter, struct pfi_kif *p)
824 if (filter == NULL || !*filter)
826 if (!strcmp(p->pfik_name, filter))
827 return (0); /* exact match */
829 if (n < 1 || n >= IFNAMSIZ)
830 return (1); /* sanity check */
831 if (filter[n-1] >= '0' && filter[n-1] <= '9')
832 return (1); /* only do exact match in that case */
833 if (strncmp(p->pfik_name, filter, n))
834 return (1); /* prefix doesn't match */
835 return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9');
839 pfi_set_flags(const char *name, int flags)
845 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
846 if (pfi_skip_if(name, p))
848 p->pfik_flags |= flags;
855 pfi_clear_flags(const char *name, int flags)
861 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
862 if (pfi_skip_if(name, p))
864 p->pfik_flags &= ~flags;
870 /* from pf_print_state.c */
872 pfi_unmask(void *addr)
874 struct pf_addr *m = addr;
875 int i = 31, j = 0, b = 0;
878 while (j < 4 && m->addr32[j] == 0xffffffff) {
883 tmp = ntohl(m->addr32[j]);
884 for (i = 31; tmp & (1 << i); --i)
892 pfi_attach_ifnet_event(void *arg __unused, struct ifnet *ifp)
895 pfi_attach_ifnet(ifp);
900 pfi_detach_ifnet_event(void *arg __unused, struct ifnet *ifp)
903 pfi_detach_ifnet(ifp);
908 pfi_attach_group_event(void *arg __unused, struct ifg_group *ifg)
911 pfi_attach_ifgroup(ifg);
916 pfi_change_group_event(void *arg __unused, char *gname)
919 pfi_group_change(gname);
924 pfi_detach_group_event(void *arg __unused, struct ifg_group *ifg)
927 pfi_detach_ifgroup(ifg);
932 pfi_ifaddr_event(void *arg __unused, struct ifnet *ifp)
935 if (ifp && ifp->if_pf_kif)
936 pfi_kifaddr_update(ifp->if_pf_kif);
939 #endif /* __FreeBSD__ */