1 /* $FreeBSD: src/sys/contrib/pf/net/pf_if.c,v 1.6 2004/09/14 15:20:24 mlaier Exp $ */
2 /* $OpenBSD: pf_if.c,v 1.11 2004/03/15 11:38:23 cedric Exp $ */
3 /* add $OpenBSD: pf_if.c,v 1.19 2004/08/11 12:06:44 henning Exp $ */
4 /* $DragonFly: src/sys/net/pf/pf_if.c,v 1.3 2004/09/28 16:22:41 joerg Exp $ */
7 * Copyright (c) 2004 The DragonFly Project. All rights reserved.
9 * Copyright (c) 2001 Daniel Hartmeier
10 * Copyright (c) 2003 Cedric Berger
11 * All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
17 * - Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
28 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
34 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
39 #include "opt_inet6.h"
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/malloc.h>
45 #include <sys/eventhandler.h>
46 #include <sys/filio.h>
47 #include <sys/socket.h>
48 #include <sys/socketvar.h>
49 #include <sys/kernel.h>
51 #include <vm/vm_zone.h>
54 #include <net/if_types.h>
55 #include <net/route.h>
57 #include <netinet/in.h>
58 #include <netinet/in_var.h>
59 #include <netinet/in_systm.h>
60 #include <netinet/ip.h>
61 #include <netinet/ip_var.h>
63 #include <net/pf/pfvar.h>
66 #include <netinet/ip6.h>
69 #define ACCEPT_FLAGS(oklist) \
71 if ((flags & ~(oklist)) & \
76 #define senderr(e) do { rv = (e); goto _bad; } while (0)
78 struct pfi_kif **pfi_index2kif;
79 struct pfi_kif *pfi_self, *pfi_dummy;
81 struct pfi_ifhead pfi_ifs;
82 struct pfi_statehead pfi_statehead;
84 vm_zone_t pfi_addr_pl;
86 struct pfr_addr *pfi_buffer;
89 char pfi_reserved_anchor[PF_ANCHOR_NAME_SIZE] =
91 char pfi_interface_ruleset[PF_RULESET_NAME_SIZE] =
94 eventhandler_tag pfi_clone_cookie = NULL;
95 eventhandler_tag pfi_attach_cookie = NULL;
96 eventhandler_tag pfi_detach_cookie = NULL;
98 void pfi_dynaddr_update(void *);
99 void pfi_kifaddr_update(void *);
100 void pfi_table_update(struct pfr_ktable *, struct pfi_kif *,
102 void pfi_instance_add(struct ifnet *, int, int);
103 void pfi_address_add(struct sockaddr *, int, int);
104 int pfi_if_compare(struct pfi_kif *, struct pfi_kif *);
105 struct pfi_kif *pfi_if_create(const char *, struct pfi_kif *, int);
106 void pfi_copy_group(char *, const char *, int);
107 void pfi_dynamic_drivers(void);
108 void pfi_newgroup(const char *, int);
109 int pfi_skip_if(const char *, struct pfi_kif *, int);
110 int pfi_unmask(void *);
111 void pfi_dohooks(struct pfi_kif *);
112 void pfi_kifaddr_update_event(void *, struct ifnet *);
113 void pfi_attach_clone_event(void *, struct if_clone *);
114 void pfi_attach_ifnet_event(void *, struct ifnet *);
115 void pfi_detach_ifnet_event(void *, struct ifnet *);
117 RB_PROTOTYPE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
118 RB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
120 #define PFI_DYNAMIC_BUSES { "pcmcia", "cardbus", "uhub" }
121 #define PFI_BUFFER_MAX 0x10000
122 MALLOC_DEFINE(PFI_MTYPE, "pf_if", "pf interface table");
129 if (pfi_self != NULL) /* already initialized */
132 TAILQ_INIT(&pfi_statehead);
134 pfi_buffer = malloc(pfi_buffer_max * sizeof(*pfi_buffer),
135 PFI_MTYPE, M_WAITOK);
136 pfi_self = pfi_if_create("self", NULL, PFI_IFLAG_GROUP);
137 pfi_dynamic_drivers();
139 TAILQ_FOREACH(ifp, &ifnet, if_link) {
140 if (ifp->if_dunit != IF_DUNIT_NONE)
141 pfi_attach_ifnet(ifp);
143 pfi_dummy = pfi_if_create("notyet", pfi_self,
144 PFI_IFLAG_GROUP | PFI_IFLAG_DYNAMIC);
145 pfi_attach_cookie = EVENTHANDLER_REGISTER(ifnet_attach_event,
146 pfi_attach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
147 pfi_detach_cookie = EVENTHANDLER_REGISTER(ifnet_detach_event,
148 pfi_detach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
149 pfi_clone_cookie = EVENTHANDLER_REGISTER(if_clone_event,
150 pfi_attach_clone_event, NULL, EVENTHANDLER_PRI_ANY);
156 struct pfi_kif *p, key;
159 EVENTHANDLER_DEREGISTER(ifnet_attach_event, pfi_attach_cookie);
160 EVENTHANDLER_DEREGISTER(ifnet_detach_event, pfi_detach_cookie);
161 EVENTHANDLER_DEREGISTER(if_clone_event, pfi_clone_cookie);
163 /* release PFI_IFLAG_INSTANCE */
164 TAILQ_FOREACH(ifp, &ifnet, if_link) {
165 strlcpy(key.pfik_name, ifp->if_xname, sizeof(key.pfik_name));
166 p = RB_FIND(pfi_ifhead, &pfi_ifs, &key);
168 pfi_detach_ifnet(ifp);
171 /* XXX clear all other interface group */
172 while ((p = RB_MIN(pfi_ifhead, &pfi_ifs))) {
173 RB_REMOVE(pfi_ifhead, &pfi_ifs, p);
175 free(p->pfik_ah_head, PFI_MTYPE);
178 free(pfi_index2kif, PFI_MTYPE);
179 free(pfi_buffer, PFI_MTYPE);
180 pfi_index2kif = NULL;
186 * Wrapper functions for FreeBSD eventhandler
189 pfi_kifaddr_update_event(void *arg, struct ifnet *ifp)
191 struct pfi_kif *p = arg;
194 * Check to see if it is 'our' interface as we do not have per
195 * interface hooks and thus get an update for every interface.
197 if (p && p->pfik_ifp == ifp)
198 pfi_kifaddr_update(p);
202 pfi_attach_clone_event(void *arg __unused, struct if_clone *ifc)
204 pfi_attach_clone(ifc);
208 pfi_attach_ifnet_event(void *arg __unused, struct ifnet *ifp)
210 if (ifp->if_dunit != IF_DUNIT_NONE)
211 pfi_attach_ifnet(ifp);
215 pfi_detach_ifnet_event(void *arg __unused, struct ifnet *ifp)
217 pfi_detach_ifnet(ifp);
221 pfi_attach_clone(struct if_clone *ifc)
224 pfi_newgroup(ifc->ifc_name, PFI_IFLAG_CLONABLE);
228 pfi_attach_ifnet(struct ifnet *ifp)
230 struct pfi_kif *p, *q, key;
237 if (ifp->if_index >= pfi_indexlim) {
239 * grow pfi_index2kif, similar to ifindex2ifnet code in if.c
242 struct pfi_kif **mp, **np;
244 oldlim = pfi_indexlim;
245 if (pfi_indexlim == 0)
247 while (ifp->if_index >= pfi_indexlim)
250 m = oldlim * sizeof(struct pfi_kif *);
252 n = pfi_indexlim * sizeof(struct pfi_kif *);
253 np = malloc(n, PFI_MTYPE, M_NOWAIT);
255 panic("pfi_attach_ifnet: "
256 "cannot allocate translation table");
265 strlcpy(key.pfik_name, ifp->if_xname, sizeof(key.pfik_name));
266 p = RB_FIND(pfi_ifhead, &pfi_ifs, &key);
267 /* some additional trickery for placeholders */
268 if ((p == NULL) || (p->pfik_parent == pfi_dummy)) {
269 /* are we looking at a renamed instance or not? */
270 pfi_copy_group(key.pfik_name, ifp->if_xname,
271 sizeof(key.pfik_name));
272 realname = (strncmp(key.pfik_name, ifp->if_dname,
273 sizeof(key.pfik_name)) == 0);
275 /* we can change if_xname, hence use if_dname as group id */
276 pfi_copy_group(key.pfik_name, ifp->if_dname,
277 sizeof(key.pfik_name));
278 q = RB_FIND(pfi_ifhead, &pfi_ifs, &key);
280 q = pfi_if_create(key.pfik_name, pfi_self,
281 PFI_IFLAG_GROUP|PFI_IFLAG_DYNAMIC);
282 else if (q->pfik_parent == pfi_dummy) {
283 q->pfik_parent = pfi_self;
284 q->pfik_flags = (PFI_IFLAG_GROUP | PFI_IFLAG_DYNAMIC);
287 panic("pfi_attach_ifnet: "
288 "cannot allocate '%s' group", key.pfik_name);
290 /* add/modify interface */
292 p = pfi_if_create(ifp->if_xname, q,
293 realname?PFI_IFLAG_INSTANCE:PFI_IFLAG_PLACEHOLDER);
295 /* remove from the dummy group */
296 /* XXX: copy stats? We should not have any!!! */
297 pfi_dummy->pfik_delcnt++;
298 TAILQ_REMOVE(&pfi_dummy->pfik_grouphead, p,
300 /* move to the right group */
303 TAILQ_INSERT_TAIL(&q->pfik_grouphead, p,
306 p->pfik_flags &= ~PFI_IFLAG_PLACEHOLDER;
307 p->pfik_flags |= PFI_IFLAG_INSTANCE;
311 panic("pfi_attach_ifnet: "
312 "cannot allocate '%s' interface", ifp->if_xname);
316 p->pfik_flags |= PFI_IFLAG_ATTACHED;
317 p->pfik_ah_cookie = EVENTHANDLER_REGISTER(ifaddr_event,
318 pfi_kifaddr_update_event, p, EVENTHANDLER_PRI_ANY);
319 pfi_index2kif[ifp->if_index] = p;
325 pfi_detach_ifnet(struct ifnet *ifp)
327 struct pfi_kif *p, *q, key;
330 strlcpy(key.pfik_name, ifp->if_xname, sizeof(key.pfik_name));
334 p = RB_FIND(pfi_ifhead, &pfi_ifs, &key);
336 printf("pfi_detach_ifnet: cannot find %s", ifp->if_xname);
340 EVENTHANDLER_DEREGISTER(ifaddr_event, p->pfik_ah_cookie);
343 p->pfik_flags &= ~PFI_IFLAG_ATTACHED;
344 pfi_index2kif[ifp->if_index] = NULL;
346 pfi_maybe_destroy(p);
351 pfi_lookup_create(const char *name)
353 struct pfi_kif *p, *q, key;
357 p = pfi_lookup_if(name);
359 pfi_copy_group(key.pfik_name, name, sizeof(key.pfik_name));
360 q = pfi_lookup_if(key.pfik_name);
361 if ((q != NULL) && (q->pfik_parent != pfi_dummy))
362 p = pfi_if_create(name, q, PFI_IFLAG_INSTANCE);
364 if (pfi_dummy == NULL)
365 panic("no 'notyet' dummy group");
366 p = pfi_if_create(name, pfi_dummy,
367 PFI_IFLAG_PLACEHOLDER);
375 pfi_attach_rule(const char *name)
379 p = pfi_lookup_create(name);
386 pfi_detach_rule(struct pfi_kif *p)
390 if (p->pfik_rules > 0)
393 printf("pfi_detach_rule: reference count at 0\n");
394 pfi_maybe_destroy(p);
398 pfi_attach_state(struct pfi_kif *p)
400 if (!p->pfik_states++)
401 TAILQ_INSERT_TAIL(&pfi_statehead, p, pfik_w_states);
405 pfi_detach_state(struct pfi_kif *p)
409 if (p->pfik_states <= 0) {
410 printf("pfi_detach_state: reference count <= 0\n");
413 if (!--p->pfik_states)
414 TAILQ_REMOVE(&pfi_statehead, p, pfik_w_states);
415 pfi_maybe_destroy(p);
419 pfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af)
421 struct pfi_dynaddr *dyn;
422 char tblname[PF_TABLE_NAME_SIZE];
423 struct pf_ruleset *ruleset = NULL;
426 if (aw->type != PF_ADDR_DYNIFTL)
428 dyn = pool_get(&pfi_addr_pl, PR_NOWAIT);
431 bzero(dyn, sizeof(*dyn));
434 dyn->pfid_kif = pfi_attach_rule(aw->v.ifname);
435 if (dyn->pfid_kif == NULL)
438 dyn->pfid_net = pfi_unmask(&aw->v.a.mask);
439 if (af == AF_INET && dyn->pfid_net == 32)
441 strlcpy(tblname, aw->v.ifname, sizeof(tblname));
442 if (aw->iflags & PFI_AFLAG_NETWORK)
443 strlcat(tblname, ":network", sizeof(tblname));
444 if (aw->iflags & PFI_AFLAG_BROADCAST)
445 strlcat(tblname, ":broadcast", sizeof(tblname));
446 if (aw->iflags & PFI_AFLAG_PEER)
447 strlcat(tblname, ":peer", sizeof(tblname));
448 if (aw->iflags & PFI_AFLAG_NOALIAS)
449 strlcat(tblname, ":0", sizeof(tblname));
450 if (dyn->pfid_net != 128)
451 snprintf(tblname + strlen(tblname),
452 sizeof(tblname) - strlen(tblname), "/%d", dyn->pfid_net);
453 ruleset = pf_find_or_create_ruleset(pfi_reserved_anchor,
454 pfi_interface_ruleset);
458 dyn->pfid_kt = pfr_attach_table(ruleset, tblname);
459 if (dyn->pfid_kt == NULL)
462 dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE;
463 dyn->pfid_iflags = aw->iflags;
465 dyn->pfid_hook_cookie = hook_establish(dyn->pfid_kif->pfik_ah_head, 1,
466 pfi_dynaddr_update, dyn);
467 if (dyn->pfid_hook_cookie == NULL)
471 pfi_dynaddr_update(aw->p.dyn);
476 if (dyn->pfid_kt != NULL)
477 pfr_detach_table(dyn->pfid_kt);
479 pf_remove_if_empty_ruleset(ruleset);
480 if (dyn->pfid_kif != NULL)
481 pfi_detach_rule(dyn->pfid_kif);
482 pool_put(&pfi_addr_pl, dyn);
488 pfi_dynaddr_update(void *p)
490 struct pfi_dynaddr *dyn = (struct pfi_dynaddr *)p;
491 struct pfi_kif *kif = dyn->pfid_kif;
492 struct pfr_ktable *kt = dyn->pfid_kt;
494 if (dyn == NULL || kif == NULL || kt == NULL)
495 panic("pfi_dynaddr_update");
496 if (kt->pfrkt_larg != pfi_update) {
497 /* this table needs to be brought up-to-date */
498 pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags);
499 kt->pfrkt_larg = pfi_update;
501 pfr_dynaddr_update(kt, dyn);
505 pfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags)
511 if ((kif->pfik_flags & PFI_IFLAG_INSTANCE) && kif->pfik_ifp == NULL) {
512 pfr_clr_addrs(&kt->pfrkt_t, NULL, 0);
516 if ((kif->pfik_flags & PFI_IFLAG_INSTANCE))
517 pfi_instance_add(kif->pfik_ifp, net, flags);
518 else if (strcmp(kif->pfik_name, "self")) {
519 TAILQ_FOREACH(p, &kif->pfik_grouphead, pfik_instances)
520 pfi_instance_add(p->pfik_ifp, net, flags);
522 RB_FOREACH(p, pfi_ifhead, &pfi_ifs)
523 if (p->pfik_flags & PFI_IFLAG_INSTANCE)
524 pfi_instance_add(p->pfik_ifp, net, flags);
528 if ((e = pfr_set_addrs(&t, pfi_buffer, pfi_buffer_cnt, &size2,
529 NULL, NULL, NULL, 0)))
530 printf("pfi_table_update: cannot set %d new addresses "
531 "into table %s: %d\n", pfi_buffer_cnt, kt->pfrkt_name, e);
535 pfi_instance_add(struct ifnet *ifp, int net, int flags)
538 int got4 = 0, got6 = 0;
543 TAILQ_FOREACH(ia, &ifp->if_addrlist, ifa_list) {
544 if (ia->ifa_addr == NULL)
546 af = ia->ifa_addr->sa_family;
547 if (af != AF_INET && af != AF_INET6)
550 * XXX: For point-to-point interfaces, (ifname:0) and IPv4,
551 * jump over address without a proper route to work
552 * around a problem with ppp not fully removing the
553 * address used during IPCP.
555 if ((ifp->if_flags & IFF_POINTOPOINT) &&
556 !(ia->ifa_flags & IFA_ROUTE) &&
557 (flags & PFI_AFLAG_NOALIAS) && (af == AF_INET))
559 if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6)
561 if ((flags & PFI_AFLAG_BROADCAST) &&
562 !(ifp->if_flags & IFF_BROADCAST))
564 if ((flags & PFI_AFLAG_PEER) &&
565 !(ifp->if_flags & IFF_POINTOPOINT))
567 if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 &&
568 IN6_IS_ADDR_LINKLOCAL(
569 &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr))
571 if (flags & PFI_AFLAG_NOALIAS) {
572 if (af == AF_INET && got4)
574 if (af == AF_INET6 && got6)
582 if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) {
584 net2 = pfi_unmask(&((struct sockaddr_in *)
585 ia->ifa_netmask)->sin_addr);
587 net2 = pfi_unmask(&((struct sockaddr_in6 *)
588 ia->ifa_netmask)->sin6_addr);
591 if (af == AF_INET && net2 > 32)
593 if (flags & PFI_AFLAG_BROADCAST)
594 pfi_address_add(ia->ifa_broadaddr, af, net2);
595 else if (flags & PFI_AFLAG_PEER)
596 pfi_address_add(ia->ifa_dstaddr, af, net2);
598 pfi_address_add(ia->ifa_addr, af, net2);
603 pfi_address_add(struct sockaddr *sa, int af, int net)
608 if (pfi_buffer_cnt >= pfi_buffer_max) {
609 int new_max = pfi_buffer_max * 2;
611 if (new_max > PFI_BUFFER_MAX) {
612 printf("pfi_address_add: address buffer full (%d/%d)\n",
613 pfi_buffer_cnt, PFI_BUFFER_MAX);
616 p = malloc(new_max * sizeof(*pfi_buffer), PFI_MTYPE,
619 printf("pfi_address_add: no memory to grow buffer "
620 "(%d/%d)\n", pfi_buffer_cnt, PFI_BUFFER_MAX);
623 memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof(*pfi_buffer));
624 /* no need to zero buffer */
625 free(pfi_buffer, PFI_MTYPE);
627 pfi_buffer_max = new_max;
629 if (af == AF_INET && net > 32)
631 p = pfi_buffer + pfi_buffer_cnt++;
632 bzero(p, sizeof(*p));
636 p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr;
637 if (af == AF_INET6) {
638 p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr;
639 if (IN6_IS_ADDR_LINKLOCAL(&p->pfra_ip6addr))
640 p->pfra_ip6addr.s6_addr16[1] = 0;
642 /* mask network address bits */
644 ((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8));
645 for (i = (p->pfra_net+7)/8; i < sizeof(p->pfra_u); i++)
650 pfi_dynaddr_remove(struct pf_addr_wrap *aw)
654 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
655 aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL)
659 hook_disestablish(aw->p.dyn->pfid_kif->pfik_ah_head,
660 aw->p.dyn->pfid_hook_cookie);
661 pfi_detach_rule(aw->p.dyn->pfid_kif);
662 aw->p.dyn->pfid_kif = NULL;
663 pfr_detach_table(aw->p.dyn->pfid_kt);
664 aw->p.dyn->pfid_kt = NULL;
665 pool_put(&pfi_addr_pl, aw->p.dyn);
671 pfi_dynaddr_copyout(struct pf_addr_wrap *aw)
673 if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
674 aw->p.dyn->pfid_kif == NULL)
676 aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6;
680 pfi_kifaddr_update(void *v)
691 pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q)
693 return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ));
697 pfi_if_create(const char *name, struct pfi_kif *q, int flags)
701 p = malloc(sizeof(*p), PFI_MTYPE, M_NOWAIT);
704 bzero(p, sizeof(*p));
705 p->pfik_ah_head = malloc(sizeof(*p->pfik_ah_head), PFI_MTYPE,
707 if (p->pfik_ah_head == NULL) {
711 bzero(p->pfik_ah_head, sizeof(*p->pfik_ah_head));
712 TAILQ_INIT(p->pfik_ah_head);
713 TAILQ_INIT(&p->pfik_grouphead);
714 strlcpy(p->pfik_name, name, sizeof(p->pfik_name));
715 RB_INIT(&p->pfik_lan_ext);
716 RB_INIT(&p->pfik_ext_gwy);
717 p->pfik_flags = flags;
719 p->pfik_tzero = time_second;
721 RB_INSERT(pfi_ifhead, &pfi_ifs, p);
724 TAILQ_INSERT_TAIL(&q->pfik_grouphead, p, pfik_instances);
731 pfi_maybe_destroy(struct pfi_kif *p)
734 struct pfi_kif *q = p->pfik_parent;
736 if ((p->pfik_flags & (PFI_IFLAG_ATTACHED | PFI_IFLAG_GROUP)) ||
737 p->pfik_rules > 0 || p->pfik_states > 0)
738 if (!(p->pfik_flags & PFI_IFLAG_PLACEHOLDER))
743 for (i = 0; i < 2; i++)
744 for (j = 0; j < 2; j++)
745 for (k = 0; k < 2; k++) {
746 q->pfik_bytes[i][j][k] +=
747 p->pfik_bytes[i][j][k];
748 q->pfik_packets[i][j][k] +=
749 p->pfik_packets[i][j][k];
750 /* clear stats in case we return to the dummy group */
751 p->pfik_bytes[i][j][k] = 0;
752 p->pfik_packets[i][j][k] = 0;
755 TAILQ_REMOVE(&q->pfik_grouphead, p, pfik_instances);
757 if (p->pfik_rules > 0 || p->pfik_states > 0) {
758 /* move back to the dummy group */
759 p->pfik_parent = pfi_dummy;
760 pfi_dummy->pfik_addcnt++;
761 TAILQ_INSERT_TAIL(&pfi_dummy->pfik_grouphead, p,
766 RB_REMOVE(pfi_ifhead, &pfi_ifs, p);
769 free(p->pfik_ah_head, PFI_MTYPE);
775 pfi_copy_group(char *p, const char *q, int m)
777 while (m > 1 && *q && !(*q >= '0' && *q <= '9')) {
786 pfi_dynamic_drivers(void)
791 * For FreeBSD basically every interface is "dynamic" as we can unload
794 TAILQ_FOREACH(ifp, &ifnet, if_link) {
795 if (ifp->if_dunit == IF_DUNIT_NONE)
797 pfi_newgroup(ifp->if_dname, PFI_IFLAG_DYNAMIC);
802 pfi_newgroup(const char *name, int flags)
806 p = pfi_lookup_if(name);
808 p = pfi_if_create(name, pfi_self, PFI_IFLAG_GROUP);
810 printf("pfi_newgroup: cannot allocate '%s' group", name);
813 p->pfik_flags |= flags;
817 pfi_fill_oldstatus(struct pf_status *pfs)
819 struct pfi_kif *p, key;
822 strlcpy(key.pfik_name, pfs->ifname, sizeof(key.pfik_name));
824 p = RB_FIND(pfi_ifhead, &pfi_ifs, &key);
829 bzero(pfs->pcounters, sizeof(pfs->pcounters));
830 bzero(pfs->bcounters, sizeof(pfs->bcounters));
831 for (i = 0; i < 2; i++)
832 for (j = 0; j < 2; j++)
833 for (k = 0; k < 2; k++) {
834 pfs->pcounters[i][j][k] =
835 p->pfik_packets[i][j][k];
836 pfs->bcounters[i][j] +=
837 p->pfik_bytes[i][j][k];
843 pfi_clr_istats(const char *name, int *nzero, int flags)
847 long tzero = time_second;
850 ACCEPT_FLAGS(PFI_FLAG_GROUP|PFI_FLAG_INSTANCE);
851 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
852 if (pfi_skip_if(name, p, flags))
854 bzero(p->pfik_packets, sizeof(p->pfik_packets));
855 bzero(p->pfik_bytes, sizeof(p->pfik_bytes));
856 p->pfik_tzero = tzero;
866 pfi_get_ifaces(const char *name, struct pfi_if *buf, int *size, int flags)
871 ACCEPT_FLAGS(PFI_FLAG_GROUP|PFI_FLAG_INSTANCE);
873 RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
874 if (pfi_skip_if(name, p, flags))
878 p->pfik_tzero = boottime.tv_sec;
879 if (copyout(p, buf++, sizeof(*buf))) {
891 pfi_lookup_if(const char *name)
893 struct pfi_kif *p, key;
895 strlcpy(key.pfik_name, name, sizeof(key.pfik_name));
896 p = RB_FIND(pfi_ifhead, &pfi_ifs, &key);
901 pfi_skip_if(const char *filter, struct pfi_kif *p, int f)
905 if ((p->pfik_flags & PFI_IFLAG_GROUP) && !(f & PFI_FLAG_GROUP))
907 if ((p->pfik_flags & PFI_IFLAG_INSTANCE) && !(f & PFI_FLAG_INSTANCE))
909 if (filter == NULL || !*filter)
911 if (!strcmp(p->pfik_name, filter))
912 return (0); /* exact match */
914 if (n < 1 || n >= IFNAMSIZ)
915 return (1); /* sanity check */
916 if (filter[n-1] >= '0' && filter[n-1] <= '9')
917 return (1); /* only do exact match in that case */
918 if (strncmp(p->pfik_name, filter, n))
919 return (1); /* prefix doesn't match */
920 return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9');
923 /* from pf_print_state.c */
925 pfi_unmask(void *addr)
927 struct pf_addr *m = addr;
928 int i = 31, j = 0, b = 0;
931 while (j < 4 && m->addr32[j] == 0xffffffff) {
936 tmp = ntohl(m->addr32[j]);
937 for (i = 31; tmp & (1 << i); --i)
944 pfi_dohooks(struct pfi_kif *p)
946 for (; p != NULL; p = p->pfik_parent)
947 dohooks(p->pfik_ah_head, 0);
951 pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af)
954 switch (dyn->pfid_acnt4) {
958 return (PF_MATCHA(0, &dyn->pfid_addr4,
959 &dyn->pfid_mask4, a, AF_INET));
961 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET));
964 switch (dyn->pfid_acnt6) {
968 return (PF_MATCHA(0, &dyn->pfid_addr6,
969 &dyn->pfid_mask6, a, AF_INET6));
971 return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6));