1 /* $OpenBSD: pf_if.c,v 1.54 2008/06/14 16:55:28 mk 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.
36 #include "opt_inet6.h"
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/malloc.h>
42 #include <sys/eventhandler.h>
43 #include <sys/filio.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
46 #include <sys/kernel.h>
47 #include <sys/thread2.h>
51 #include <net/if_types.h>
52 #include <net/route.h>
54 #include <netinet/in.h>
55 #include <netinet/in_var.h>
56 #include <netinet/in_systm.h>
57 #include <netinet/ip.h>
58 #include <netinet/ip_var.h>
60 #include <net/pf/pfvar.h>
63 #include <netinet/ip6.h>
66 struct pfi_kif *pfi_all = NULL;
67 struct pfi_ifhead pfi_ifs;
69 struct pfr_addr *pfi_buffer;
73 eventhandler_tag pfi_clone_cookie = NULL;
74 eventhandler_tag pfi_attach_cookie = NULL;
75 eventhandler_tag pfi_detach_cookie = NULL;
77 void pfi_kif_update(struct pfi_kif *);
78 void pfi_dynaddr_update(struct pfi_dynaddr *dyn);
79 void pfi_table_update(struct pfr_ktable *, struct pfi_kif *,
81 void pfi_kifaddr_update(void *);
82 void pfi_instance_add(struct ifnet *, int, int);
83 void pfi_address_add(struct sockaddr *, int, int);
84 int pfi_if_compare(struct pfi_kif *, struct pfi_kif *);
85 int pfi_skip_if(const char *, struct pfi_kif *);
86 int pfi_unmask(void *);
87 void pfi_kifaddr_update_event(void *, struct ifnet *,
88 enum ifaddr_event, struct ifaddr *);
89 /*XXX jl void pfi_attach_clone_event(void *, struct if_clone *);*/
90 void pfi_attach_ifnet_event(void *, struct ifnet *);
91 void pfi_detach_ifnet_event(void *, struct ifnet *);
93 RB_PROTOTYPE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
94 RB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
96 #define PFI_BUFFER_MAX 0x10000
97 MALLOC_DEFINE(PFI_MTYPE, "pf_if", "pf interface table");
98 static MALLOC_DEFINE(M_PFIADDRPL, "pfiaddrpl", "pf interface address pool list");
106 if (pfi_all != NULL) /* already initialized */
110 pfi_buffer = kmalloc(pfi_buffer_max * sizeof(*pfi_buffer),
111 PFI_MTYPE, M_WAITOK);
113 if ((pfi_all = pfi_kif_get(IFG_ALL)) == NULL)
114 panic("pfi_kif_get for pfi_all failed");
116 /* XXX ALMOST MPSAFE */
118 TAILQ_FOREACH(ifp, &ifnetlist, if_link) {
119 if (ifp->if_dunit != IF_DUNIT_NONE)
120 pfi_attach_ifnet(ifp);
123 pfi_attach_cookie = EVENTHANDLER_REGISTER(ifnet_attach_event,
124 pfi_attach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
125 pfi_detach_cookie = EVENTHANDLER_REGISTER(ifnet_detach_event,
126 pfi_detach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
127 /* XXX jl pfi_clone_cookie = EVENTHANDLER_REGISTER(if_clone_event,
128 pfi_attach_clone_event, NULL, EVENTHANDLER_PRI_ANY); */
130 if ((pfi_all = pfi_kif_get(IFG_ALL)) == NULL)
131 panic("pfi_kif_get for pfi_all failed");
137 struct pfi_kif *p, key;
140 EVENTHANDLER_DEREGISTER(ifnet_attach_event, pfi_attach_cookie);
141 EVENTHANDLER_DEREGISTER(ifnet_detach_event, pfi_detach_cookie);
142 EVENTHANDLER_DEREGISTER(if_clone_event, pfi_clone_cookie);
144 /* release PFI_IFLAG_INSTANCE */
145 /* XXX ALMOST MPSAFE */
147 TAILQ_FOREACH(ifp, &ifnetlist, if_link) {
148 strlcpy(key.pfik_name, ifp->if_xname, sizeof(key.pfik_name));
149 p = RB_FIND(pfi_ifhead, &pfi_ifs, &key);
151 pfi_detach_ifnet(ifp);
155 /* XXX clear all other interface group */
156 while ((p = RB_MIN(pfi_ifhead, &pfi_ifs))) {
157 RB_REMOVE(pfi_ifhead, &pfi_ifs, p);
161 kfree(pfi_buffer, PFI_MTYPE);
167 * Wrapper functions for FreeBSD eventhandler
170 pfi_kifaddr_update_event(void *arg, struct ifnet *ifp,
171 enum ifaddr_event event __unused, struct ifaddr *ifa __unused)
173 struct pfi_kif *p = arg;
176 * Check to see if it is 'our' interface as we do not have per
177 * interface hooks and thus get an update for every interface.
179 if (p && p->pfik_ifp == ifp)
180 pfi_kifaddr_update(p);
185 pfi_attach_clone_event(void *arg __unused, struct if_clone *ifc)
187 pfi_attach_clone(ifc);
192 pfi_attach_ifnet_event(void *arg __unused, struct ifnet *ifp)
194 if (ifp->if_dunit != IF_DUNIT_NONE)
195 pfi_attach_ifnet(ifp);
199 pfi_detach_ifnet_event(void *arg __unused, struct ifnet *ifp)
201 pfi_detach_ifnet(ifp);
205 pfi_kif_get(const char *kif_name)
208 struct pfi_kif_cmp s;
210 bzero(&s, sizeof(s));
211 strlcpy(s.pfik_ifname, kif_name, sizeof(s.pfik_ifname));
212 if ((kif = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&s)) != NULL)
216 if ((kif = kmalloc(sizeof(*kif), PFI_MTYPE, M_WAITOK | M_ZERO)) == NULL)
219 strlcpy(kif->pfik_name, kif_name, sizeof(kif->pfik_name));
220 kif->pfik_tzero = time_second;
221 TAILQ_INIT(&kif->pfik_dynaddrs);
223 RB_INSERT(pfi_ifhead, &pfi_ifs, kif);
228 pfi_kif_ref(struct pfi_kif *kif, enum pfi_kif_refs what)
231 case PFI_KIF_REF_RULE:
234 case PFI_KIF_REF_STATE:
238 panic("pfi_kif_ref with unknown type");
243 pfi_kif_unref(struct pfi_kif *kif, enum pfi_kif_refs what)
249 case PFI_KIF_REF_NONE:
251 case PFI_KIF_REF_RULE:
252 if (kif->pfik_rules <= 0) {
253 kprintf("pfi_kif_unref: rules refcount <= 0\n");
258 case PFI_KIF_REF_STATE:
259 if (kif->pfik_states <= 0) {
260 kprintf("pfi_kif_unref: state refcount <= 0\n");
266 panic("pfi_kif_unref with unknown type");
269 if (kif->pfik_ifp != NULL || kif->pfik_group != NULL || kif == pfi_all)
272 if (kif->pfik_rules || kif->pfik_states)
275 RB_REMOVE(pfi_ifhead, &pfi_ifs, kif);
276 kfree(kif, PFI_MTYPE);
280 pfi_kif_match(struct pfi_kif *rule_kif, struct pfi_kif *packet_kif)
284 if (rule_kif == NULL || rule_kif == packet_kif)
287 if (rule_kif->pfik_group != NULL)
288 TAILQ_FOREACH(p, &packet_kif->pfik_ifp->if_groups, ifgl_next)
289 if (p->ifgl_group == rule_kif->pfik_group)
296 pfi_attach_ifnet(struct ifnet *ifp)
303 if ((kif = pfi_kif_get(ifp->if_xname)) == NULL)
304 panic("pfi_kif_get failed");
307 ifp->if_pf_kif = (caddr_t)kif;
315 pfi_detach_ifnet(struct ifnet *ifp)
319 if ((kif = (struct pfi_kif *)ifp->if_pf_kif) == NULL)
326 kif->pfik_ifp = NULL;
327 ifp->if_pf_kif = NULL;
328 pfi_kif_unref(kif, PFI_KIF_REF_NONE);
333 pfi_attach_ifgroup(struct ifg_group *ifg)
340 if ((kif = pfi_kif_get(ifg->ifg_group)) == NULL)
341 panic("pfi_kif_get failed");
343 kif->pfik_group = ifg;
344 ifg->ifg_pf_kif = (caddr_t)kif;
350 pfi_detach_ifgroup(struct ifg_group *ifg)
354 if ((kif = (struct pfi_kif *)ifg->ifg_pf_kif) == NULL)
360 kif->pfik_group = NULL;
361 ifg->ifg_pf_kif = NULL;
362 pfi_kif_unref(kif, PFI_KIF_REF_NONE);
367 pfi_group_change(const char *group)
373 if ((kif = pfi_kif_get(group)) == NULL)
374 panic("pfi_kif_get failed");
382 pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af)
387 switch (dyn->pfid_acnt4) {
391 return (PF_MATCHA(0, &dyn->pfid_addr4,
392 &dyn->pfid_mask4, a, AF_INET));
394 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET));
400 switch (dyn->pfid_acnt6) {
404 return (PF_MATCHA(0, &dyn->pfid_addr6,
405 &dyn->pfid_mask6, a, AF_INET6));
407 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6));
417 pfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af)
419 struct pfi_dynaddr *dyn;
420 char tblname[PF_TABLE_NAME_SIZE];
421 struct pf_ruleset *ruleset = NULL;
424 if (aw->type != PF_ADDR_DYNIFTL)
426 if ((dyn = kmalloc(sizeof(struct pfi_dynaddr), M_PFIADDRPL, M_WAITOK|M_NULLOK|M_ZERO))
431 if (!strcmp(aw->v.ifname, "self"))
432 dyn->pfid_kif = pfi_kif_get(IFG_ALL);
434 dyn->pfid_kif = pfi_kif_get(aw->v.ifname);
435 if (dyn->pfid_kif == NULL) {
439 pfi_kif_ref(dyn->pfid_kif, PFI_KIF_REF_RULE);
441 dyn->pfid_net = pfi_unmask(&aw->v.a.mask);
442 if (af == AF_INET && dyn->pfid_net == 32)
444 strlcpy(tblname, aw->v.ifname, sizeof(tblname));
445 if (aw->iflags & PFI_AFLAG_NETWORK)
446 strlcat(tblname, ":network", sizeof(tblname));
447 if (aw->iflags & PFI_AFLAG_BROADCAST)
448 strlcat(tblname, ":broadcast", sizeof(tblname));
449 if (aw->iflags & PFI_AFLAG_PEER)
450 strlcat(tblname, ":peer", sizeof(tblname));
451 if (aw->iflags & PFI_AFLAG_NOALIAS)
452 strlcat(tblname, ":0", sizeof(tblname));
453 if (dyn->pfid_net != 128)
454 ksnprintf(tblname + strlen(tblname),
455 sizeof(tblname) - strlen(tblname), "/%d", dyn->pfid_net);
456 if ((ruleset = pf_find_or_create_ruleset(PF_RESERVED_ANCHOR)) == NULL) {
461 if ((dyn->pfid_kt = pfr_attach_table(ruleset, tblname)) == NULL) {
466 dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE;
467 dyn->pfid_iflags = aw->iflags;
470 TAILQ_INSERT_TAIL(&dyn->pfid_kif->pfik_dynaddrs, dyn, entry);
472 pfi_kif_update(dyn->pfid_kif);
477 if (dyn->pfid_kt != NULL)
478 pfr_detach_table(dyn->pfid_kt);
480 pf_remove_if_empty_ruleset(ruleset);
481 if (dyn->pfid_kif != NULL)
482 pfi_kif_unref(dyn->pfid_kif, PFI_KIF_REF_RULE);
483 kfree(dyn, M_PFIADDRPL);
489 pfi_kif_update(struct pfi_kif *kif)
491 struct ifg_list *ifgl;
492 struct pfi_dynaddr *p;
494 /* update all dynaddr */
495 TAILQ_FOREACH(p, &kif->pfik_dynaddrs, entry)
496 pfi_dynaddr_update(p);
498 /* again for all groups kif is member of */
499 if (kif->pfik_ifp != NULL)
500 TAILQ_FOREACH(ifgl, &kif->pfik_ifp->if_groups, ifgl_next)
501 pfi_kif_update((struct pfi_kif *)
502 ifgl->ifgl_group->ifg_pf_kif);
506 pfi_dynaddr_update(struct pfi_dynaddr *dyn)
509 struct pfr_ktable *kt;
511 if (dyn == NULL || dyn->pfid_kif == NULL || dyn->pfid_kt == NULL)
512 panic("pfi_dynaddr_update");
517 if (kt->pfrkt_larg != pfi_update) {
518 /* this table needs to be brought up-to-date */
519 pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags);
520 kt->pfrkt_larg = pfi_update;
522 pfr_dynaddr_update(kt, dyn);
526 pfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags)
529 struct ifg_member *ifgm;
533 if (kif->pfik_ifp != NULL)
534 pfi_instance_add(kif->pfik_ifp, net, flags);
535 else if (kif->pfik_group != NULL)
536 TAILQ_FOREACH(ifgm, &kif->pfik_group->ifg_members, ifgm_next)
537 pfi_instance_add(ifgm->ifgm_ifp, net, flags);
539 if ((e = pfr_set_addrs(&kt->pfrkt_t, pfi_buffer, pfi_buffer_cnt, &size2,
540 NULL, NULL, NULL, 0, PFR_TFLAG_ALLMASK)))
541 kprintf("pfi_table_update: cannot set %d new addresses "
542 "into table %s: %d\n", pfi_buffer_cnt, kt->pfrkt_name, e);
546 pfi_instance_add(struct ifnet *ifp, int net, int flags)
548 struct ifaddr_container *ifac;
549 int got4 = 0, got6 = 0;
554 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
555 struct ifaddr *ia = ifac->ifa;
557 if (ia->ifa_addr == NULL)
559 af = ia->ifa_addr->sa_family;
560 if (af != AF_INET && af != AF_INET6)
563 * XXX: For point-to-point interfaces, (ifname:0) and IPv4,
564 * jump over address without a proper route to work
565 * around a problem with ppp not fully removing the
566 * address used during IPCP.
568 if ((ifp->if_flags & IFF_POINTOPOINT) &&
569 !(ia->ifa_flags & IFA_ROUTE) &&
570 (flags & PFI_AFLAG_NOALIAS) && (af == AF_INET))
572 if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6)
574 if ((flags & PFI_AFLAG_BROADCAST) &&
575 !(ifp->if_flags & IFF_BROADCAST))
577 if ((flags & PFI_AFLAG_PEER) &&
578 !(ifp->if_flags & IFF_POINTOPOINT))
580 if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 &&
581 IN6_IS_ADDR_LINKLOCAL(
582 &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr))
584 if (flags & PFI_AFLAG_NOALIAS) {
585 if (af == AF_INET && got4)
587 if (af == AF_INET6 && got6)
592 else if (af == AF_INET6)
595 if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) {
597 net2 = pfi_unmask(&((struct sockaddr_in *)
598 ia->ifa_netmask)->sin_addr);
599 else if (af == AF_INET6)
600 net2 = pfi_unmask(&((struct sockaddr_in6 *)
601 ia->ifa_netmask)->sin6_addr);
603 if (af == AF_INET && net2 > 32)
605 if (flags & PFI_AFLAG_BROADCAST)
606 pfi_address_add(ia->ifa_broadaddr, af, net2);
607 else if (flags & PFI_AFLAG_PEER)
608 pfi_address_add(ia->ifa_dstaddr, af, net2);
610 pfi_address_add(ia->ifa_addr, af, net2);
615 pfi_address_add(struct sockaddr *sa, int af, int net)
620 if (pfi_buffer_cnt >= pfi_buffer_max) {
621 int new_max = pfi_buffer_max * 2;
623 if (new_max > PFI_BUFFER_MAX) {
624 kprintf("pfi_address_add: address buffer full (%d/%d)\n",
625 pfi_buffer_cnt, PFI_BUFFER_MAX);
628 p = kmalloc(new_max * sizeof(*pfi_buffer), PFI_MTYPE, M_WAITOK);
629 memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof(*pfi_buffer));
630 /* no need to zero buffer */
631 kfree(pfi_buffer, PFI_MTYPE);
633 pfi_buffer_max = new_max;
635 if (af == AF_INET && net > 32)
637 p = pfi_buffer + pfi_buffer_cnt++;
638 bzero(p, sizeof(*p));
642 p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr;
643 else if (af == AF_INET6) {
644 p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr;
645 if (IN6_IS_SCOPE_EMBED(&p->pfra_ip6addr))
646 p->pfra_ip6addr.s6_addr16[1] = 0;
648 /* mask network address bits */
650 ((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8));
651 for (i = (p->pfra_net+7)/8; i < sizeof(p->pfra_u); i++)
656 pfi_dynaddr_remove(struct pf_addr_wrap *aw)
658 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
659 aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL)
663 TAILQ_REMOVE(&aw->p.dyn->pfid_kif->pfik_dynaddrs, aw->p.dyn, entry);
664 pfi_kif_unref(aw->p.dyn->pfid_kif, PFI_KIF_REF_RULE);
665 aw->p.dyn->pfid_kif = NULL;
666 pfr_detach_table(aw->p.dyn->pfid_kt);
667 aw->p.dyn->pfid_kt = NULL;
668 kfree(aw->p.dyn, M_PFIADDRPL);
674 pfi_dynaddr_copyout(struct pf_addr_wrap *aw)
676 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
677 aw->p.dyn->pfid_kif == NULL)
679 aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6;
683 pfi_kifaddr_update(void *v)
685 struct pfi_kif *kif = (struct pfi_kif *)v;
694 pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q)
696 return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ));
700 pfi_update_status(const char *name, struct pf_status *pfs)
703 struct pfi_kif_cmp key;
704 struct ifg_member p_member, *ifgm;
705 TAILQ_HEAD(, ifg_member) ifg_members;
708 strlcpy(key.pfik_ifname, name, sizeof(key.pfik_ifname));
710 p = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&key);
715 if (p->pfik_group != NULL) {
716 bcopy(&p->pfik_group->ifg_members, &ifg_members,
717 sizeof(ifg_members));
719 /* build a temporary list for p only */
720 bzero(&p_member, sizeof(p_member));
721 p_member.ifgm_ifp = p->pfik_ifp;
722 TAILQ_INIT(&ifg_members);
723 TAILQ_INSERT_TAIL(&ifg_members, &p_member, ifgm_next);
726 bzero(pfs->pcounters, sizeof(pfs->pcounters));
727 bzero(pfs->bcounters, sizeof(pfs->bcounters));
729 TAILQ_FOREACH(ifgm, &ifg_members, ifgm_next) {
730 if (ifgm->ifgm_ifp == NULL)
732 p = (struct pfi_kif *)ifgm->ifgm_ifp->if_pf_kif;
734 /* just clear statistics */
736 bzero(p->pfik_packets, sizeof(p->pfik_packets));
737 bzero(p->pfik_bytes, sizeof(p->pfik_bytes));
738 p->pfik_tzero = time_second;
741 for (i = 0; i < 2; i++)
742 for (j = 0; j < 2; j++)
743 for (k = 0; k < 2; k++) {
744 pfs->pcounters[i][j][k] +=
745 p->pfik_packets[i][j][k];
746 pfs->bcounters[i][j] +=
747 p->pfik_bytes[i][j][k];
754 pfi_get_ifaces(const char *name, struct pfi_kif *buf, int *size)
756 struct pfi_kif *p, *nextp;
760 for (p = RB_MIN(pfi_ifhead, &pfi_ifs); p; p = nextp) {
761 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
762 if (pfi_skip_if(name, p))
766 p->pfik_tzero = time_second;
767 pfi_kif_ref(p, PFI_KIF_REF_RULE);
768 if (copyout(p, buf++, sizeof(*buf))) {
769 pfi_kif_unref(p, PFI_KIF_REF_RULE);
773 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
774 pfi_kif_unref(p, PFI_KIF_REF_RULE);
783 pfi_skip_if(const char *filter, struct pfi_kif *p)
787 if (filter == NULL || !*filter)
789 if (!strcmp(p->pfik_name, filter))
790 return (0); /* exact match */
792 if (n < 1 || n >= IFNAMSIZ)
793 return (1); /* sanity check */
794 if (filter[n-1] >= '0' && filter[n-1] <= '9')
795 return (1); /* only do exact match in that case */
796 if (strncmp(p->pfik_name, filter, n))
797 return (1); /* prefix doesn't match */
798 return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9');
802 pfi_set_flags(const char *name, int flags)
807 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
808 if (pfi_skip_if(name, p))
810 p->pfik_flags |= flags;
817 pfi_clear_flags(const char *name, int flags)
822 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
823 if (pfi_skip_if(name, p))
825 p->pfik_flags &= ~flags;
831 /* from pf_print_state.c */
833 pfi_unmask(void *addr)
835 struct pf_addr *m = addr;
836 int i = 31, j = 0, b = 0;
839 while (j < 4 && m->addr32[j] == 0xffffffff) {
844 tmp = ntohl(m->addr32[j]);
845 for (i = 31; tmp & (1 << i); --i)