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>
57 #include <sys/vimage.h>
60 #include <net/if_types.h>
62 #include <netinet/in.h>
63 #include <netinet/in_var.h>
64 #include <netinet/in_systm.h>
65 #include <netinet/ip.h>
66 #include <netinet/ip_var.h>
68 #include <net/pfvar.h>
71 #include <netinet/ip6.h>
74 struct pfi_kif *pfi_all = NULL;
75 struct pfi_statehead pfi_statehead;
77 uma_zone_t pfi_addr_pl;
79 struct pool pfi_addr_pl;
81 struct pfi_ifhead pfi_ifs;
83 struct pfr_addr *pfi_buffer;
87 eventhandler_tag pfi_attach_cookie = NULL;
88 eventhandler_tag pfi_detach_cookie = NULL;
89 eventhandler_tag pfi_attach_group_cookie = NULL;
90 eventhandler_tag pfi_change_group_cookie = NULL;
91 eventhandler_tag pfi_detach_group_cookie = NULL;
92 eventhandler_tag pfi_ifaddr_event_cookie = NULL;
95 void pfi_kif_update(struct pfi_kif *);
96 void pfi_dynaddr_update(struct pfi_dynaddr *dyn);
97 void pfi_table_update(struct pfr_ktable *, struct pfi_kif *,
99 void pfi_kifaddr_update(void *);
100 void pfi_instance_add(struct ifnet *, int, int);
101 void pfi_address_add(struct sockaddr *, int, int);
102 int pfi_if_compare(struct pfi_kif *, struct pfi_kif *);
103 int pfi_skip_if(const char *, struct pfi_kif *);
104 int pfi_unmask(void *);
106 void pfi_attach_ifnet_event(void * __unused, struct ifnet *);
107 void pfi_detach_ifnet_event(void * __unused, struct ifnet *);
108 void pfi_attach_group_event(void * __unused, struct ifg_group *);
109 void pfi_change_group_event(void * __unused, char *);
110 void pfi_detach_group_event(void * __unused, struct ifg_group *);
111 void pfi_ifaddr_event(void * __unused, struct ifnet *);
113 extern struct ifgrouphead ifg_head;
116 RB_PROTOTYPE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
117 RB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
119 #define PFI_BUFFER_MAX 0x10000
120 #define PFI_MTYPE M_IFADDR
125 INIT_VNET_NET(curvnet);
127 if (pfi_all != NULL) /* already initialized */
130 TAILQ_INIT(&pfi_statehead);
132 pool_init(&pfi_addr_pl, sizeof(struct pfi_dynaddr), 0, 0, 0,
133 "pfiaddrpl", &pool_allocator_nointr);
136 pfi_buffer = malloc(pfi_buffer_max * sizeof(*pfi_buffer),
137 PFI_MTYPE, M_WAITOK);
139 if ((pfi_all = pfi_kif_get(IFG_ALL)) == NULL)
140 panic("pfi_kif_get for pfi_all failed");
143 struct ifg_group *ifg;
147 TAILQ_FOREACH(ifg, &V_ifg_head, ifg_next)
148 pfi_attach_ifgroup(ifg);
149 TAILQ_FOREACH(ifp, &V_ifnet, if_link)
150 pfi_attach_ifnet(ifp);
153 pfi_attach_cookie = EVENTHANDLER_REGISTER(ifnet_arrival_event,
154 pfi_attach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
155 pfi_detach_cookie = EVENTHANDLER_REGISTER(ifnet_departure_event,
156 pfi_detach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
157 pfi_attach_group_cookie = EVENTHANDLER_REGISTER(group_attach_event,
158 pfi_attach_group_event, NULL, EVENTHANDLER_PRI_ANY);
159 pfi_change_group_cookie = EVENTHANDLER_REGISTER(group_change_event,
160 pfi_change_group_event, NULL, EVENTHANDLER_PRI_ANY);
161 pfi_detach_group_cookie = EVENTHANDLER_REGISTER(group_detach_event,
162 pfi_detach_group_event, NULL, EVENTHANDLER_PRI_ANY);
163 pfi_ifaddr_event_cookie = EVENTHANDLER_REGISTER(ifaddr_event,
164 pfi_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY);
175 EVENTHANDLER_DEREGISTER(ifnet_arrival_event, pfi_attach_cookie);
176 EVENTHANDLER_DEREGISTER(ifnet_departure_event, pfi_detach_cookie);
177 EVENTHANDLER_DEREGISTER(group_attach_event, pfi_attach_group_cookie);
178 EVENTHANDLER_DEREGISTER(group_change_event, pfi_change_group_cookie);
179 EVENTHANDLER_DEREGISTER(group_detach_event, pfi_detach_group_cookie);
180 EVENTHANDLER_DEREGISTER(ifaddr_event, pfi_ifaddr_event_cookie);
184 while ((p = RB_MIN(pfi_ifhead, &pfi_ifs))) {
185 if (p->pfik_rules || p->pfik_states) {
186 printf("pfi_cleanup: dangling refs for %s\n",
190 RB_REMOVE(pfi_ifhead, &pfi_ifs, p);
194 free(pfi_buffer, PFI_MTYPE);
199 pfi_kif_get(const char *kif_name)
202 struct pfi_kif_cmp s;
204 bzero(&s, sizeof(s));
205 strlcpy(s.pfik_name, kif_name, sizeof(s.pfik_name));
206 if ((kif = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&s)) != NULL)
211 if ((kif = malloc(sizeof(*kif), PFI_MTYPE, M_NOWAIT)) == NULL)
213 if ((kif = malloc(sizeof(*kif), PFI_MTYPE, M_DONTWAIT)) == NULL)
217 bzero(kif, sizeof(*kif));
218 strlcpy(kif->pfik_name, kif_name, sizeof(kif->pfik_name));
221 * It seems that the value of time_second is in unintialzied state
222 * when pf sets interface statistics clear time in boot phase if pf
223 * was statically linked to kernel. Instead of setting the bogus
224 * time value have pfi_get_ifaces handle this case. In
225 * pfi_get_ifaces it uses boottime.tv_sec if it sees the time is 0.
227 kif->pfik_tzero = time_second > 1 ? time_second : 0;
229 kif->pfik_tzero = time_second;
231 TAILQ_INIT(&kif->pfik_dynaddrs);
233 RB_INSERT(pfi_ifhead, &pfi_ifs, kif);
238 pfi_kif_ref(struct pfi_kif *kif, enum pfi_kif_refs what)
241 case PFI_KIF_REF_RULE:
244 case PFI_KIF_REF_STATE:
245 if (!kif->pfik_states++)
246 TAILQ_INSERT_TAIL(&pfi_statehead, kif, pfik_w_states);
249 panic("pfi_kif_ref with unknown type");
254 pfi_kif_unref(struct pfi_kif *kif, enum pfi_kif_refs what)
260 case PFI_KIF_REF_NONE:
262 case PFI_KIF_REF_RULE:
263 if (kif->pfik_rules <= 0) {
264 printf("pfi_kif_unref: rules refcount <= 0\n");
269 case PFI_KIF_REF_STATE:
270 if (kif->pfik_states <= 0) {
271 printf("pfi_kif_unref: state refcount <= 0\n");
274 if (!--kif->pfik_states)
275 TAILQ_REMOVE(&pfi_statehead, kif, pfik_w_states);
278 panic("pfi_kif_unref with unknown type");
281 if (kif->pfik_ifp != NULL || kif->pfik_group != NULL || kif == pfi_all)
284 if (kif->pfik_rules || kif->pfik_states)
287 RB_REMOVE(pfi_ifhead, &pfi_ifs, kif);
288 free(kif, PFI_MTYPE);
292 pfi_kif_match(struct pfi_kif *rule_kif, struct pfi_kif *packet_kif)
296 if (rule_kif == NULL || rule_kif == packet_kif)
299 if (rule_kif->pfik_group != NULL)
300 TAILQ_FOREACH(p, &packet_kif->pfik_ifp->if_groups, ifgl_next)
301 if (p->ifgl_group == rule_kif->pfik_group)
308 pfi_attach_ifnet(struct ifnet *ifp)
316 if ((kif = pfi_kif_get(ifp->if_xname)) == NULL)
317 panic("pfi_kif_get failed");
320 ifp->if_pf_kif = (caddr_t)kif;
323 if ((kif->pfik_ah_cookie = hook_establish(ifp->if_addrhooks, 1,
324 pfi_kifaddr_update, kif)) == NULL)
325 panic("pfi_attach_ifnet: cannot allocate '%s' address hook",
335 pfi_detach_ifnet(struct ifnet *ifp)
340 if ((kif = (struct pfi_kif *)ifp->if_pf_kif) == NULL)
346 hook_disestablish(ifp->if_addrhooks, kif->pfik_ah_cookie);
350 kif->pfik_ifp = NULL;
351 ifp->if_pf_kif = NULL;
352 pfi_kif_unref(kif, PFI_KIF_REF_NONE);
357 pfi_attach_ifgroup(struct ifg_group *ifg)
365 if ((kif = pfi_kif_get(ifg->ifg_group)) == NULL)
366 panic("pfi_kif_get failed");
368 kif->pfik_group = ifg;
369 ifg->ifg_pf_kif = (caddr_t)kif;
375 pfi_detach_ifgroup(struct ifg_group *ifg)
380 if ((kif = (struct pfi_kif *)ifg->ifg_pf_kif) == NULL)
386 kif->pfik_group = NULL;
387 ifg->ifg_pf_kif = NULL;
388 pfi_kif_unref(kif, PFI_KIF_REF_NONE);
393 pfi_group_change(const char *group)
400 if ((kif = pfi_kif_get(group)) == NULL)
401 panic("pfi_kif_get failed");
409 pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af)
414 switch (dyn->pfid_acnt4) {
418 return (PF_MATCHA(0, &dyn->pfid_addr4,
419 &dyn->pfid_mask4, a, AF_INET));
421 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET));
427 switch (dyn->pfid_acnt6) {
431 return (PF_MATCHA(0, &dyn->pfid_addr6,
432 &dyn->pfid_mask6, a, AF_INET6));
434 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6));
444 pfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af)
446 struct pfi_dynaddr *dyn;
447 char tblname[PF_TABLE_NAME_SIZE];
448 struct pf_ruleset *ruleset = NULL;
451 if (aw->type != PF_ADDR_DYNIFTL)
453 if ((dyn = pool_get(&pfi_addr_pl, PR_NOWAIT)) == NULL)
455 bzero(dyn, sizeof(*dyn));
458 if (!strcmp(aw->v.ifname, "self"))
459 dyn->pfid_kif = pfi_kif_get(IFG_ALL);
461 dyn->pfid_kif = pfi_kif_get(aw->v.ifname);
462 if (dyn->pfid_kif == NULL) {
466 pfi_kif_ref(dyn->pfid_kif, PFI_KIF_REF_RULE);
468 dyn->pfid_net = pfi_unmask(&aw->v.a.mask);
469 if (af == AF_INET && dyn->pfid_net == 32)
471 strlcpy(tblname, aw->v.ifname, sizeof(tblname));
472 if (aw->iflags & PFI_AFLAG_NETWORK)
473 strlcat(tblname, ":network", sizeof(tblname));
474 if (aw->iflags & PFI_AFLAG_BROADCAST)
475 strlcat(tblname, ":broadcast", sizeof(tblname));
476 if (aw->iflags & PFI_AFLAG_PEER)
477 strlcat(tblname, ":peer", sizeof(tblname));
478 if (aw->iflags & PFI_AFLAG_NOALIAS)
479 strlcat(tblname, ":0", sizeof(tblname));
480 if (dyn->pfid_net != 128)
481 snprintf(tblname + strlen(tblname),
482 sizeof(tblname) - strlen(tblname), "/%d", dyn->pfid_net);
483 if ((ruleset = pf_find_or_create_ruleset(PF_RESERVED_ANCHOR)) == NULL) {
488 if ((dyn->pfid_kt = pfr_attach_table(ruleset, tblname)) == NULL) {
493 dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE;
494 dyn->pfid_iflags = aw->iflags;
497 TAILQ_INSERT_TAIL(&dyn->pfid_kif->pfik_dynaddrs, dyn, entry);
499 pfi_kif_update(dyn->pfid_kif);
504 if (dyn->pfid_kt != NULL)
505 pfr_detach_table(dyn->pfid_kt);
507 pf_remove_if_empty_ruleset(ruleset);
508 if (dyn->pfid_kif != NULL)
509 pfi_kif_unref(dyn->pfid_kif, PFI_KIF_REF_RULE);
510 pool_put(&pfi_addr_pl, dyn);
516 pfi_kif_update(struct pfi_kif *kif)
518 struct ifg_list *ifgl;
519 struct pfi_dynaddr *p;
521 /* update all dynaddr */
522 TAILQ_FOREACH(p, &kif->pfik_dynaddrs, entry)
523 pfi_dynaddr_update(p);
525 /* again for all groups kif is member of */
526 if (kif->pfik_ifp != NULL)
527 TAILQ_FOREACH(ifgl, &kif->pfik_ifp->if_groups, ifgl_next)
528 pfi_kif_update((struct pfi_kif *)
529 ifgl->ifgl_group->ifg_pf_kif);
533 pfi_dynaddr_update(struct pfi_dynaddr *dyn)
536 struct pfr_ktable *kt;
538 if (dyn == NULL || dyn->pfid_kif == NULL || dyn->pfid_kt == NULL)
539 panic("pfi_dynaddr_update");
544 if (kt->pfrkt_larg != pfi_update) {
545 /* this table needs to be brought up-to-date */
546 pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags);
547 kt->pfrkt_larg = pfi_update;
549 pfr_dynaddr_update(kt, dyn);
553 pfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags)
556 struct ifg_member *ifgm;
560 if (kif->pfik_ifp != NULL)
561 pfi_instance_add(kif->pfik_ifp, net, flags);
562 else if (kif->pfik_group != NULL)
563 TAILQ_FOREACH(ifgm, &kif->pfik_group->ifg_members, ifgm_next)
564 pfi_instance_add(ifgm->ifgm_ifp, net, flags);
566 if ((e = pfr_set_addrs(&kt->pfrkt_t, pfi_buffer, pfi_buffer_cnt, &size2,
567 NULL, NULL, NULL, 0, PFR_TFLAG_ALLMASK)))
568 printf("pfi_table_update: cannot set %d new addresses "
569 "into table %s: %d\n", pfi_buffer_cnt, kt->pfrkt_name, e);
573 pfi_instance_add(struct ifnet *ifp, int net, int flags)
576 int got4 = 0, got6 = 0;
581 TAILQ_FOREACH(ia, &ifp->if_addrlist, ifa_list) {
582 if (ia->ifa_addr == NULL)
584 af = ia->ifa_addr->sa_family;
585 if (af != AF_INET && af != AF_INET6)
589 * XXX: For point-to-point interfaces, (ifname:0) and IPv4,
590 * jump over addresses without a proper route to work
591 * around a problem with ppp not fully removing the
592 * address used during IPCP.
594 if ((ifp->if_flags & IFF_POINTOPOINT) &&
595 !(ia->ifa_flags & IFA_ROUTE) &&
596 (flags & PFI_AFLAG_NOALIAS) && (af == AF_INET))
599 if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6)
601 if ((flags & PFI_AFLAG_BROADCAST) &&
602 !(ifp->if_flags & IFF_BROADCAST))
604 if ((flags & PFI_AFLAG_PEER) &&
605 !(ifp->if_flags & IFF_POINTOPOINT))
607 if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 &&
608 IN6_IS_ADDR_LINKLOCAL(
609 &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr))
611 if (flags & PFI_AFLAG_NOALIAS) {
612 if (af == AF_INET && got4)
614 if (af == AF_INET6 && got6)
619 else if (af == AF_INET6)
622 if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) {
624 net2 = pfi_unmask(&((struct sockaddr_in *)
625 ia->ifa_netmask)->sin_addr);
626 else if (af == AF_INET6)
627 net2 = pfi_unmask(&((struct sockaddr_in6 *)
628 ia->ifa_netmask)->sin6_addr);
630 if (af == AF_INET && net2 > 32)
632 if (flags & PFI_AFLAG_BROADCAST)
633 pfi_address_add(ia->ifa_broadaddr, af, net2);
634 else if (flags & PFI_AFLAG_PEER)
635 pfi_address_add(ia->ifa_dstaddr, af, net2);
637 pfi_address_add(ia->ifa_addr, af, net2);
642 pfi_address_add(struct sockaddr *sa, int af, int net)
647 if (pfi_buffer_cnt >= pfi_buffer_max) {
648 int new_max = pfi_buffer_max * 2;
650 if (new_max > PFI_BUFFER_MAX) {
651 printf("pfi_address_add: address buffer full (%d/%d)\n",
652 pfi_buffer_cnt, PFI_BUFFER_MAX);
655 p = malloc(new_max * sizeof(*pfi_buffer), PFI_MTYPE,
662 printf("pfi_address_add: no memory to grow buffer "
663 "(%d/%d)\n", pfi_buffer_cnt, PFI_BUFFER_MAX);
666 memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof(*pfi_buffer));
667 /* no need to zero buffer */
668 free(pfi_buffer, PFI_MTYPE);
670 pfi_buffer_max = new_max;
672 if (af == AF_INET && net > 32)
674 p = pfi_buffer + pfi_buffer_cnt++;
675 bzero(p, sizeof(*p));
679 p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr;
680 else if (af == AF_INET6) {
681 p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr;
682 if (IN6_IS_SCOPE_EMBED(&p->pfra_ip6addr))
683 p->pfra_ip6addr.s6_addr16[1] = 0;
685 /* mask network address bits */
687 ((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8));
688 for (i = (p->pfra_net+7)/8; i < sizeof(p->pfra_u); i++)
693 pfi_dynaddr_remove(struct pf_addr_wrap *aw)
697 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
698 aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL)
702 TAILQ_REMOVE(&aw->p.dyn->pfid_kif->pfik_dynaddrs, aw->p.dyn, entry);
703 pfi_kif_unref(aw->p.dyn->pfid_kif, PFI_KIF_REF_RULE);
704 aw->p.dyn->pfid_kif = NULL;
705 pfr_detach_table(aw->p.dyn->pfid_kt);
706 aw->p.dyn->pfid_kt = NULL;
707 pool_put(&pfi_addr_pl, aw->p.dyn);
713 pfi_dynaddr_copyout(struct pf_addr_wrap *aw)
715 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
716 aw->p.dyn->pfid_kif == NULL)
718 aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6;
722 pfi_kifaddr_update(void *v)
725 struct pfi_kif *kif = (struct pfi_kif *)v;
734 pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q)
736 return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ));
740 pfi_fill_oldstatus(struct pf_status *pfs)
743 struct pfi_kif_cmp key;
746 strlcpy(key.pfik_name, pfs->ifname, sizeof(key.pfik_name));
748 p = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&key);
753 bzero(pfs->pcounters, sizeof(pfs->pcounters));
754 bzero(pfs->bcounters, sizeof(pfs->bcounters));
755 for (i = 0; i < 2; i++)
756 for (j = 0; j < 2; j++)
757 for (k = 0; k < 2; k++) {
758 pfs->pcounters[i][j][k] =
759 p->pfik_packets[i][j][k];
760 pfs->bcounters[i][j] +=
761 p->pfik_bytes[i][j][k];
767 pfi_clr_istats(const char *name)
773 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
774 if (pfi_skip_if(name, p))
776 bzero(p->pfik_packets, sizeof(p->pfik_packets));
777 bzero(p->pfik_bytes, sizeof(p->pfik_bytes));
778 p->pfik_tzero = time_second;
786 pfi_get_ifaces(const char *name, struct pfi_kif *buf, int *size)
788 struct pfi_kif *p, *nextp;
795 for (p = RB_MIN(pfi_ifhead, &pfi_ifs); p; p = nextp) {
796 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
797 if (pfi_skip_if(name, p))
801 p->pfik_tzero = time_second;
802 pfi_kif_ref(p, PFI_KIF_REF_RULE);
804 PF_COPYOUT(p, buf++, sizeof(*buf), error);
807 if (copyout(p, buf++, sizeof(*buf))) {
809 pfi_kif_unref(p, PFI_KIF_REF_RULE);
813 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
814 pfi_kif_unref(p, PFI_KIF_REF_RULE);
823 pfi_skip_if(const char *filter, struct pfi_kif *p)
827 if (filter == NULL || !*filter)
829 if (!strcmp(p->pfik_name, filter))
830 return (0); /* exact match */
832 if (n < 1 || n >= IFNAMSIZ)
833 return (1); /* sanity check */
834 if (filter[n-1] >= '0' && filter[n-1] <= '9')
835 return (1); /* only do exact match in that case */
836 if (strncmp(p->pfik_name, filter, n))
837 return (1); /* prefix doesn't match */
838 return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9');
842 pfi_set_flags(const char *name, int flags)
848 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
849 if (pfi_skip_if(name, p))
851 p->pfik_flags |= flags;
858 pfi_clear_flags(const char *name, int flags)
864 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
865 if (pfi_skip_if(name, p))
867 p->pfik_flags &= ~flags;
873 /* from pf_print_state.c */
875 pfi_unmask(void *addr)
877 struct pf_addr *m = addr;
878 int i = 31, j = 0, b = 0;
881 while (j < 4 && m->addr32[j] == 0xffffffff) {
886 tmp = ntohl(m->addr32[j]);
887 for (i = 31; tmp & (1 << i); --i)
895 pfi_attach_ifnet_event(void *arg __unused, struct ifnet *ifp)
898 pfi_attach_ifnet(ifp);
900 pf_altq_ifnet_event(ifp, 0);
906 pfi_detach_ifnet_event(void *arg __unused, struct ifnet *ifp)
909 pfi_detach_ifnet(ifp);
911 pf_altq_ifnet_event(ifp, 1);
917 pfi_attach_group_event(void *arg __unused, struct ifg_group *ifg)
920 pfi_attach_ifgroup(ifg);
925 pfi_change_group_event(void *arg __unused, char *gname)
928 pfi_group_change(gname);
933 pfi_detach_group_event(void *arg __unused, struct ifg_group *ifg)
936 pfi_detach_ifgroup(ifg);
941 pfi_ifaddr_event(void *arg __unused, struct ifnet *ifp)
944 if (ifp && ifp->if_pf_kif)
945 pfi_kifaddr_update(ifp->if_pf_kif);
948 #endif /* __FreeBSD__ */