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/msgport2.h>
45 #include <sys/socket.h>
46 #include <sys/socketvar.h>
47 #include <sys/kernel.h>
48 #include <sys/thread2.h>
53 #include <net/if_var.h>
54 #include <net/if_types.h>
55 #include <net/netisr2.h>
56 #include <net/netmsg2.h>
57 #include <net/route.h>
59 #include <netinet/in.h>
60 #include <netinet/in_var.h>
61 #include <netinet/in_systm.h>
62 #include <netinet/ip.h>
63 #include <netinet/ip_var.h>
65 #include <net/pf/pfvar.h>
68 #include <netinet/ip6.h>
71 struct pfi_kif *pfi_all = NULL;
72 struct pfi_ifhead pfi_ifs;
73 static long pfi_update = 1;
74 static struct pfr_addr *pfi_buffer;
75 static int pfi_buffer_cnt;
76 static int pfi_buffer_max;
78 static eventhandler_tag pfi_attach_cookie;
79 static eventhandler_tag pfi_detach_cookie;
80 static eventhandler_tag pfi_attach_group_cookie;
81 static eventhandler_tag pfi_detach_group_cookie;
82 static eventhandler_tag pfi_change_group_cookie;
83 static eventhandler_tag pfi_ifaddr_event_cookie;
85 static void pfi_kif_update(struct pfi_kif *);
86 static void pfi_dynaddr_update(struct pfi_dynaddr *);
87 static void pfi_table_update(struct pfr_ktable *, struct pfi_kif *,
89 static void pfi_instance_add(struct ifnet *, int, int);
90 static void pfi_address_add(struct sockaddr *, int, int);
91 static int pfi_if_compare(struct pfi_kif *, struct pfi_kif *);
92 static int pfi_skip_if(const char *, struct pfi_kif *);
93 static int pfi_unmask(void *);
95 static void pfi_attach_ifnet_event(void * __unused, struct ifnet *);
96 static void pfi_detach_ifnet_event(void * __unused, struct ifnet *);
97 static void pfi_attach_group_event(void * __unused, struct ifg_group *);
98 static void pfi_detach_group_event(void * __unused, struct ifg_group *);
99 static void pfi_change_group_event(void * __unused, char *);
100 static void pfi_ifaddr_event(void * __unused, struct ifnet *,
101 enum ifaddr_event __unused, struct ifaddr * __unused);
103 static RB_PROTOTYPE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
104 static RB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
106 #define PFI_BUFFER_MAX 0x10000
107 static MALLOC_DEFINE(M_PFI, "pf_if", "pf interface");
114 struct ifg_group *ifg;
116 pfi_attach_cookie = EVENTHANDLER_REGISTER(ifnet_attach_event,
117 pfi_attach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
118 pfi_detach_cookie = EVENTHANDLER_REGISTER(ifnet_detach_event,
119 pfi_detach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
120 pfi_attach_group_cookie = EVENTHANDLER_REGISTER(group_attach_event,
121 pfi_attach_group_event, NULL, EVENTHANDLER_PRI_ANY);
122 pfi_detach_group_cookie = EVENTHANDLER_REGISTER(group_detach_event,
123 pfi_detach_group_event, NULL, EVENTHANDLER_PRI_ANY);
124 pfi_change_group_cookie = EVENTHANDLER_REGISTER(group_change_event,
125 pfi_change_group_event, NULL, EVENTHANDLER_PRI_ANY);
126 pfi_ifaddr_event_cookie = EVENTHANDLER_REGISTER(ifaddr_event,
127 pfi_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY);
130 pfi_buffer = kmalloc(pfi_buffer_max * sizeof(*pfi_buffer),
133 if ((pfi_all = pfi_kif_get(IFG_ALL)) == NULL)
134 panic("%s: pfi_kif_get(IFG_ALL) failed", __func__);
136 ifgroup_lockmgr(LK_SHARED);
137 TAILQ_FOREACH(ifg, &ifg_head, ifg_next)
138 pfi_attach_ifgroup(ifg);
139 ifgroup_lockmgr(LK_RELEASE);
141 /* XXX ALMOST MPSAFE */
143 TAILQ_FOREACH(ifp, &ifnetlist, if_link)
144 pfi_attach_ifnet(ifp);
153 while ((kif = RB_MIN(pfi_ifhead, &pfi_ifs))) {
154 RB_REMOVE(pfi_ifhead, &pfi_ifs, kif);
156 kif->pfik_group->ifg_pf_kif = NULL;
158 kif->pfik_ifp->if_pf_kif = NULL;
161 kfree(pfi_buffer, M_PFI);
165 EVENTHANDLER_DEREGISTER(ifnet_attach_event, pfi_attach_cookie);
166 EVENTHANDLER_DEREGISTER(ifnet_detach_event, pfi_detach_cookie);
167 EVENTHANDLER_DEREGISTER(group_attach_event, pfi_attach_group_cookie);
168 EVENTHANDLER_DEREGISTER(group_detach_event, pfi_detach_group_cookie);
169 EVENTHANDLER_DEREGISTER(group_change_event, pfi_change_group_cookie);
170 EVENTHANDLER_DEREGISTER(ifaddr_event, pfi_ifaddr_event_cookie);
174 pfi_kif_find(const char *kif_name)
176 struct pfi_kif_cmp s;
178 bzero(&s, sizeof(s));
179 strlcpy(s.pfik_name, kif_name, sizeof(s.pfik_name));
181 return (RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&s));
185 pfi_kif_get(const char *kif_name)
189 if ((kif = pfi_kif_find(kif_name)))
195 kif = kmalloc(sizeof(*kif), M_PFI, M_WAITOK | M_ZERO);
196 strlcpy(kif->pfik_name, kif_name, sizeof(kif->pfik_name));
197 kif->pfik_tzero = time_second;
198 TAILQ_INIT(&kif->pfik_dynaddrs);
200 RB_INSERT(pfi_ifhead, &pfi_ifs, kif);
205 pfi_kif_ref(struct pfi_kif *kif, enum pfi_kif_refs what)
208 case PFI_KIF_REF_RULE:
211 case PFI_KIF_REF_STATE:
215 panic("%s: unknown type", __func__);
220 pfi_kif_unref(struct pfi_kif *kif, enum pfi_kif_refs what)
226 case PFI_KIF_REF_NONE:
228 case PFI_KIF_REF_RULE:
229 if (kif->pfik_rules <= 0) {
230 kprintf("%s: rules refcount <= 0\n", __func__);
235 case PFI_KIF_REF_STATE:
236 if (kif->pfik_states <= 0) {
237 kprintf("%s: state refcount <= 0\n", __func__);
243 panic("%s: unknown type", __func__);
246 if (kif->pfik_ifp != NULL || kif->pfik_group != NULL || kif == pfi_all)
249 if (kif->pfik_rules || kif->pfik_states)
252 RB_REMOVE(pfi_ifhead, &pfi_ifs, kif);
257 pfi_kif_match(struct pfi_kif *rule_kif, struct pfi_kif *packet_kif)
261 if (rule_kif == NULL || rule_kif == packet_kif)
264 if (rule_kif->pfik_group != NULL) {
265 ifgroup_lockmgr(LK_SHARED);
266 TAILQ_FOREACH(p, &packet_kif->pfik_ifp->if_groups, ifgl_next) {
267 if (p->ifgl_group == rule_kif->pfik_group) {
268 ifgroup_lockmgr(LK_RELEASE);
272 ifgroup_lockmgr(LK_RELEASE);
279 pfi_attach_ifnet(struct ifnet *ifp)
283 if (ifp->if_dunit == IF_DUNIT_NONE)
288 if ((kif = pfi_kif_get(ifp->if_xname)) == NULL)
289 panic("%s: pfi_kif_get failed", __func__);
291 ifp->if_pf_kif = kif;
297 pfi_detach_ifnet(struct ifnet *ifp)
301 if ((kif = (struct pfi_kif *)ifp->if_pf_kif) == NULL)
307 kif->pfik_ifp = NULL;
308 ifp->if_pf_kif = NULL;
309 pfi_kif_unref(kif, PFI_KIF_REF_NONE);
314 pfi_attach_ifgroup(struct ifg_group *ifg)
320 if ((kif = pfi_kif_get(ifg->ifg_group)) == NULL)
321 panic("%s: pfi_kif_get failed", __func__);
322 kif->pfik_group = ifg;
323 ifg->ifg_pf_kif = kif;
328 pfi_detach_ifgroup(struct ifg_group *ifg)
332 if ((kif = (struct pfi_kif *)ifg->ifg_pf_kif) == NULL)
337 kif->pfik_group = NULL;
338 ifg->ifg_pf_kif = NULL;
339 pfi_kif_unref(kif, PFI_KIF_REF_NONE);
344 pfi_group_change(const char *group)
350 if ((kif = pfi_kif_get(group)) == NULL)
351 panic("%s: pfi_kif_get failed", __func__);
357 pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af)
362 switch (dyn->pfid_acnt4) {
366 return (PF_MATCHA(0, &dyn->pfid_addr4,
367 &dyn->pfid_mask4, a, AF_INET));
369 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET));
375 switch (dyn->pfid_acnt6) {
379 return (PF_MATCHA(0, &dyn->pfid_addr6,
380 &dyn->pfid_mask6, a, AF_INET6));
382 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6));
392 pfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af)
394 struct pfi_dynaddr *dyn;
395 char tblname[PF_TABLE_NAME_SIZE];
396 struct pf_ruleset *ruleset = NULL;
399 if (aw->type != PF_ADDR_DYNIFTL)
401 if ((dyn = kmalloc(sizeof(struct pfi_dynaddr), M_PFI,
402 M_WAITOK | M_NULLOK | M_ZERO)) == NULL) {
407 if (strcmp(aw->v.ifname, "self") == 0)
408 dyn->pfid_kif = pfi_kif_get(IFG_ALL);
410 dyn->pfid_kif = pfi_kif_get(aw->v.ifname);
411 if (dyn->pfid_kif == NULL) {
415 pfi_kif_ref(dyn->pfid_kif, PFI_KIF_REF_RULE);
417 dyn->pfid_net = pfi_unmask(&aw->v.a.mask);
418 if (af == AF_INET && dyn->pfid_net == 32)
420 strlcpy(tblname, aw->v.ifname, sizeof(tblname));
421 if (aw->iflags & PFI_AFLAG_NETWORK)
422 strlcat(tblname, ":network", sizeof(tblname));
423 if (aw->iflags & PFI_AFLAG_BROADCAST)
424 strlcat(tblname, ":broadcast", sizeof(tblname));
425 if (aw->iflags & PFI_AFLAG_PEER)
426 strlcat(tblname, ":peer", sizeof(tblname));
427 if (aw->iflags & PFI_AFLAG_NOALIAS)
428 strlcat(tblname, ":0", sizeof(tblname));
429 if (dyn->pfid_net != 128)
430 ksnprintf(tblname + strlen(tblname),
431 sizeof(tblname) - strlen(tblname), "/%d", dyn->pfid_net);
432 if ((ruleset = pf_find_or_create_ruleset(PF_RESERVED_ANCHOR)) == NULL) {
437 if ((dyn->pfid_kt = pfr_attach_table(ruleset, tblname)) == NULL) {
442 dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE;
443 dyn->pfid_iflags = aw->iflags;
446 TAILQ_INSERT_TAIL(&dyn->pfid_kif->pfik_dynaddrs, dyn, entry);
448 pfi_kif_update(dyn->pfid_kif);
453 if (dyn->pfid_kt != NULL)
454 pfr_detach_table(dyn->pfid_kt);
456 pf_remove_if_empty_ruleset(ruleset);
457 if (dyn->pfid_kif != NULL)
458 pfi_kif_unref(dyn->pfid_kif, PFI_KIF_REF_RULE);
465 pfi_kif_update(struct pfi_kif *kif)
467 struct ifg_list *ifgl;
468 struct pfi_dynaddr *p;
470 /* update all dynaddr */
471 TAILQ_FOREACH(p, &kif->pfik_dynaddrs, entry)
472 pfi_dynaddr_update(p);
474 /* and for all groups that the kif belongs to */
475 if (kif->pfik_ifp != NULL) {
476 ifgroup_lockmgr(LK_SHARED);
477 TAILQ_FOREACH(ifgl, &kif->pfik_ifp->if_groups, ifgl_next) {
478 pfi_kif_update((struct pfi_kif *)
479 ifgl->ifgl_group->ifg_pf_kif);
481 ifgroup_lockmgr(LK_RELEASE);
486 pfi_dynaddr_update(struct pfi_dynaddr *dyn)
489 struct pfr_ktable *kt;
491 if (dyn == NULL || dyn->pfid_kif == NULL || dyn->pfid_kt == NULL)
492 panic("%s: bad argument", __func__);
497 if (kt->pfrkt_larg != pfi_update) {
498 /* this table needs to be brought up-to-date */
499 pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags);
500 kt->pfrkt_larg = pfi_update;
502 pfr_dynaddr_update(kt, dyn);
506 pfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags)
509 struct ifg_member *ifgm;
513 if (kif->pfik_ifp != NULL) {
514 pfi_instance_add(kif->pfik_ifp, net, flags);
515 } else if (kif->pfik_group != NULL) {
516 ifgroup_lockmgr(LK_SHARED);
517 TAILQ_FOREACH(ifgm, &kif->pfik_group->ifg_members, ifgm_next)
518 pfi_instance_add(ifgm->ifgm_ifp, net, flags);
519 ifgroup_lockmgr(LK_RELEASE);
522 if ((e = pfr_set_addrs(&kt->pfrkt_t, pfi_buffer, pfi_buffer_cnt,
523 &size2, NULL, NULL, NULL, 0,
524 PFR_TFLAG_ALLMASK))) {
525 kprintf("%s: cannot set %d new addresses into table %s: %d\n",
526 __func__, pfi_buffer_cnt, kt->pfrkt_name, e);
531 struct netmsg_pfiadd {
532 struct netmsg_base base;
539 pfi_instance_add_dispatch(netmsg_t nmsg)
541 struct netmsg_pfiadd *msg = (struct netmsg_pfiadd *)nmsg;
542 struct ifaddr_container *ifac;
543 int got4 = 0, got6 = 0;
545 struct ifnet *ifp = msg->ifp;
546 int net = msg->net, flags = msg->flags;
551 * The ifaddr processing in the following loop will block,
552 * however, this function is called in netisr0, in which
553 * ifaddr list changes happen, so we don't care about the
554 * blockness of the ifaddr processing here.
556 TAILQ_FOREACH(ifac, &ifp->if_addrheads[mycpuid], ifa_link) {
557 struct ifaddr *ia = ifac->ifa;
559 if (ia->ifa_addr == NULL)
561 af = ia->ifa_addr->sa_family;
562 if (af != AF_INET && af != AF_INET6)
565 * XXX: For point-to-point interfaces, (ifname:0) and IPv4,
566 * jump over address without a proper route to work
567 * around a problem with ppp not fully removing the
568 * address used during IPCP.
570 if ((ifp->if_flags & IFF_POINTOPOINT) &&
571 !(ia->ifa_flags & IFA_ROUTE) &&
572 (flags & PFI_AFLAG_NOALIAS) && (af == AF_INET))
574 if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6)
576 if ((flags & PFI_AFLAG_BROADCAST) &&
577 !(ifp->if_flags & IFF_BROADCAST))
579 if ((flags & PFI_AFLAG_PEER) &&
580 !(ifp->if_flags & IFF_POINTOPOINT))
582 if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 &&
583 IN6_IS_ADDR_LINKLOCAL(
584 &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr))
586 if (flags & PFI_AFLAG_NOALIAS) {
587 if (af == AF_INET && got4)
589 if (af == AF_INET6 && got6)
594 else if (af == AF_INET6)
597 if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) {
599 net2 = pfi_unmask(&((struct sockaddr_in *)
600 ia->ifa_netmask)->sin_addr);
601 else if (af == AF_INET6)
602 net2 = pfi_unmask(&((struct sockaddr_in6 *)
603 ia->ifa_netmask)->sin6_addr);
605 if (af == AF_INET && net2 > 32)
607 if (flags & PFI_AFLAG_BROADCAST)
608 pfi_address_add(ia->ifa_broadaddr, af, net2);
609 else if (flags & PFI_AFLAG_PEER)
610 pfi_address_add(ia->ifa_dstaddr, af, net2);
612 pfi_address_add(ia->ifa_addr, af, net2);
615 netisr_replymsg(&nmsg->base, 0);
619 pfi_instance_add(struct ifnet *ifp, int net, int flags)
621 struct netmsg_pfiadd msg;
623 netmsg_init(&msg.base, NULL, &curthread->td_msgport, 0,
624 pfi_instance_add_dispatch);
628 netisr_domsg(&msg.base, 0);
632 pfi_address_add(struct sockaddr *sa, int af, int net)
637 if (pfi_buffer_cnt >= pfi_buffer_max) {
638 int new_max = pfi_buffer_max * 2;
640 if (new_max > PFI_BUFFER_MAX) {
641 kprintf("%s: address buffer full (%d/%d)\n", __func__,
642 pfi_buffer_cnt, PFI_BUFFER_MAX);
645 p = kmalloc(new_max * sizeof(*pfi_buffer), M_PFI, M_WAITOK);
646 memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof(*pfi_buffer));
647 /* no need to zero buffer */
648 kfree(pfi_buffer, M_PFI);
650 pfi_buffer_max = new_max;
652 if (af == AF_INET && net > 32)
654 p = pfi_buffer + pfi_buffer_cnt++;
655 bzero(p, sizeof(*p));
659 p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr;
660 else if (af == AF_INET6) {
661 p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr;
662 if (IN6_IS_SCOPE_EMBED(&p->pfra_ip6addr))
663 p->pfra_ip6addr.s6_addr16[1] = 0;
665 /* mask network address bits */
667 ((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8));
668 for (i = (p->pfra_net+7)/8; i < sizeof(p->pfra_u); i++)
673 pfi_dynaddr_remove(struct pf_addr_wrap *aw)
675 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
676 aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL)
680 TAILQ_REMOVE(&aw->p.dyn->pfid_kif->pfik_dynaddrs, aw->p.dyn, entry);
681 pfi_kif_unref(aw->p.dyn->pfid_kif, PFI_KIF_REF_RULE);
682 aw->p.dyn->pfid_kif = NULL;
683 pfr_detach_table(aw->p.dyn->pfid_kt);
684 aw->p.dyn->pfid_kt = NULL;
685 kfree(aw->p.dyn, M_PFI);
691 pfi_dynaddr_copyout(struct pf_addr_wrap *aw)
693 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
694 aw->p.dyn->pfid_kif == NULL)
696 aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6;
700 pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q)
702 return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ));
706 pfi_update_status(const char *name, struct pf_status *pfs)
709 struct pfi_kif_cmp key;
710 struct ifg_member p_member, *ifgm;
711 TAILQ_HEAD(, ifg_member) ifg_members;
714 strlcpy(key.pfik_name, name, sizeof(key.pfik_name));
716 p = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&key);
721 if (p->pfik_group != NULL) {
722 bcopy(&p->pfik_group->ifg_members, &ifg_members,
723 sizeof(ifg_members));
725 /* build a temporary list for p only */
726 bzero(&p_member, sizeof(p_member));
727 p_member.ifgm_ifp = p->pfik_ifp;
728 TAILQ_INIT(&ifg_members);
729 TAILQ_INSERT_TAIL(&ifg_members, &p_member, ifgm_next);
732 bzero(pfs->pcounters, sizeof(pfs->pcounters));
733 bzero(pfs->bcounters, sizeof(pfs->bcounters));
735 ifgroup_lockmgr(LK_SHARED);
736 TAILQ_FOREACH(ifgm, &ifg_members, ifgm_next) {
737 if (ifgm->ifgm_ifp == NULL ||
738 ifgm->ifgm_ifp->if_pf_kif == NULL)
740 p = (struct pfi_kif *)ifgm->ifgm_ifp->if_pf_kif;
742 /* just clear statistics */
744 bzero(p->pfik_packets, sizeof(p->pfik_packets));
745 bzero(p->pfik_bytes, sizeof(p->pfik_bytes));
746 p->pfik_tzero = time_second;
749 for (i = 0; i < 2; i++)
750 for (j = 0; j < 2; j++)
751 for (k = 0; k < 2; k++) {
752 pfs->pcounters[i][j][k] +=
753 p->pfik_packets[i][j][k];
754 pfs->bcounters[i][j] +=
755 p->pfik_bytes[i][j][k];
758 ifgroup_lockmgr(LK_RELEASE);
763 pfi_get_ifaces(const char *name, struct pfi_kif *buf, int *size)
765 struct pfi_kif *p, *nextp;
769 for (p = RB_MIN(pfi_ifhead, &pfi_ifs); p; p = nextp) {
770 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
771 if (pfi_skip_if(name, p))
775 p->pfik_tzero = time_second;
776 pfi_kif_ref(p, PFI_KIF_REF_RULE);
777 if (copyout(p, buf++, sizeof(*buf))) {
778 pfi_kif_unref(p, PFI_KIF_REF_RULE);
782 nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
783 pfi_kif_unref(p, PFI_KIF_REF_RULE);
792 pfi_skip_if(const char *filter, struct pfi_kif *p)
796 if (filter == NULL || !*filter)
798 if (strcmp(p->pfik_name, filter) == 0)
799 return (0); /* exact match */
801 if (n < 1 || n >= IFNAMSIZ)
802 return (1); /* sanity check */
803 if (filter[n-1] >= '0' && filter[n-1] <= '9')
804 return (1); /* only do exact match in that case */
805 if (strncmp(p->pfik_name, filter, n))
806 return (1); /* prefix doesn't match */
807 return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9');
811 pfi_set_flags(const char *name, int flags)
816 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
817 if (pfi_skip_if(name, p))
819 p->pfik_flags |= flags;
826 pfi_clear_flags(const char *name, int flags)
831 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
832 if (pfi_skip_if(name, p))
834 p->pfik_flags &= ~flags;
840 /* from pf_print_state.c */
842 pfi_unmask(void *addr)
844 struct pf_addr *m = addr;
845 int i = 31, j = 0, b = 0;
848 while (j < 4 && m->addr32[j] == 0xffffffff) {
853 tmp = ntohl(m->addr32[j]);
854 for (i = 31; tmp & (1 << i); --i)
862 * eventhandler events
866 pfi_attach_ifnet_event(void *arg __unused, struct ifnet *ifp)
868 pfi_attach_ifnet(ifp);
872 pfi_detach_ifnet_event(void *arg __unused, struct ifnet *ifp)
874 pfi_detach_ifnet(ifp);
878 pfi_attach_group_event(void *arg __unused, struct ifg_group *ifg)
880 pfi_attach_ifgroup(ifg);
884 pfi_detach_group_event(void *arg __unused, struct ifg_group *ifg)
886 pfi_detach_ifgroup(ifg);
890 pfi_change_group_event(void *arg __unused, char *gname)
892 pfi_group_change(gname);
896 pfi_ifaddr_event(void *arg __unused, struct ifnet *ifp,
897 enum ifaddr_event event __unused,
898 struct ifaddr *ifa __unused)
900 if (ifp && ifp->if_pf_kif) {
903 pfi_kif_update(ifp->if_pf_kif);