Move files to match FreeBSD layout

1 files changed, 950 insertions, 0 deletions

diff --git a/freebsd/sys/contrib/pf/net/pf_if.c b/freebsd/sys/contrib/pf/net/pf_if.c
new file mode 100644
index 00000000..e873a2ef
--- /dev/null
+++ b/freebsd/sys/contrib/pf/net/pf_if.c
@@ -0,0 +1,950 @@
+#include <freebsd/machine/rtems-bsd-config.h>
+
+/*	$OpenBSD: pf_if.c,v 1.46 2006/12/13 09:01:59 itojun Exp $ */
+
+/*
+ * Copyright 2005 Henning Brauer <henning@openbsd.org>
+ * Copyright 2005 Ryan McBride <mcbride@openbsd.org>
+ * Copyright (c) 2001 Daniel Hartmeier
+ * Copyright (c) 2003 Cedric Berger
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *    - Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    - Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following
+ *      disclaimer in the documentation and/or other materials provided
+ *      with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if defined(__FreeBSD__)
+#include <freebsd/local/opt_inet.h>
+#include <freebsd/local/opt_inet6.h>
+
+#include <freebsd/sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+#endif
+
+#include <freebsd/sys/param.h>
+#include <freebsd/sys/systm.h>
+#ifdef __FreeBSD__
+#include <freebsd/sys/malloc.h>
+#endif
+#include <freebsd/sys/mbuf.h>
+#include <freebsd/sys/filio.h>
+#include <freebsd/sys/socket.h>
+#include <freebsd/sys/socketvar.h>
+#include <freebsd/sys/kernel.h>
+#ifndef __FreeBSD__
+#include <freebsd/sys/device.h>
+#endif
+#include <freebsd/sys/time.h>
+
+#include <freebsd/net/if.h>
+#include <freebsd/net/if_types.h>
+#ifdef __FreeBSD__
+#include <freebsd/net/vnet.h>
+#endif
+
+#include <freebsd/netinet/in.h>
+#include <freebsd/netinet/in_var.h>
+#include <freebsd/netinet/in_systm.h>
+#include <freebsd/netinet/ip.h>
+#include <freebsd/netinet/ip_var.h>
+
+#include <freebsd/net/pfvar.h>
+
+#ifdef INET6
+#include <freebsd/netinet/ip6.h>
+#endif /* INET6 */
+
+struct pfi_kif		 *pfi_all = NULL;
+struct pfi_statehead	  pfi_statehead;
+#ifdef __FreeBSD__
+uma_zone_t		  pfi_addr_pl;
+#else
+struct pool		  pfi_addr_pl;
+#endif
+struct pfi_ifhead	  pfi_ifs;
+long			  pfi_update = 1;
+struct pfr_addr		 *pfi_buffer;
+int			  pfi_buffer_cnt;
+int			  pfi_buffer_max;
+#ifdef __FreeBSD__
+eventhandler_tag	  pfi_attach_cookie = NULL;
+eventhandler_tag	  pfi_detach_cookie = NULL;
+eventhandler_tag	  pfi_attach_group_cookie = NULL;
+eventhandler_tag	  pfi_change_group_cookie = NULL;
+eventhandler_tag	  pfi_detach_group_cookie = NULL;
+eventhandler_tag	  pfi_ifaddr_event_cookie = NULL;
+#endif
+
+void		 pfi_kif_update(struct pfi_kif *);
+void		 pfi_dynaddr_update(struct pfi_dynaddr *dyn);
+void		 pfi_table_update(struct pfr_ktable *, struct pfi_kif *,
+		    int, int);
+void		 pfi_kifaddr_update(void *);
+void		 pfi_instance_add(struct ifnet *, int, int);
+void		 pfi_address_add(struct sockaddr *, int, int);
+int		 pfi_if_compare(struct pfi_kif *, struct pfi_kif *);
+int		 pfi_skip_if(const char *, struct pfi_kif *);
+int		 pfi_unmask(void *);
+#ifdef __FreeBSD__
+void		 pfi_attach_ifnet_event(void * __unused, struct ifnet *);
+void		 pfi_detach_ifnet_event(void * __unused, struct ifnet *);
+void		 pfi_attach_group_event(void * __unused, struct ifg_group *);
+void		 pfi_change_group_event(void * __unused, char *);
+void		 pfi_detach_group_event(void * __unused, struct ifg_group *);
+void		 pfi_ifaddr_event(void * __unused, struct ifnet *);
+
+#endif
+
+RB_PROTOTYPE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
+RB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
+
+#define PFI_BUFFER_MAX		0x10000
+#define PFI_MTYPE		M_IFADDR
+
+void
+pfi_initialize(void)
+{
+
+	if (pfi_all != NULL)	/* already initialized */
+		return;
+
+	TAILQ_INIT(&pfi_statehead);
+#ifndef __FreeBSD__
+	pool_init(&pfi_addr_pl, sizeof(struct pfi_dynaddr), 0, 0, 0,
+	    "pfiaddrpl", &pool_allocator_nointr);
+#endif
+	pfi_buffer_max = 64;
+	pfi_buffer = malloc(pfi_buffer_max * sizeof(*pfi_buffer),
+	    PFI_MTYPE, M_WAITOK);
+
+	if ((pfi_all = pfi_kif_get(IFG_ALL)) == NULL)
+		panic("pfi_kif_get for pfi_all failed");
+
+#ifdef __FreeBSD__
+	struct ifg_group *ifg;
+	struct ifnet *ifp;
+
+	IFNET_RLOCK();
+	TAILQ_FOREACH(ifg, &V_ifg_head, ifg_next)
+		pfi_attach_ifgroup(ifg);
+	TAILQ_FOREACH(ifp, &V_ifnet, if_link)
+		pfi_attach_ifnet(ifp);
+	IFNET_RUNLOCK();
+
+	pfi_attach_cookie = EVENTHANDLER_REGISTER(ifnet_arrival_event,
+	    pfi_attach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
+	pfi_detach_cookie = EVENTHANDLER_REGISTER(ifnet_departure_event,
+	    pfi_detach_ifnet_event, NULL, EVENTHANDLER_PRI_ANY);
+	pfi_attach_group_cookie = EVENTHANDLER_REGISTER(group_attach_event,
+	    pfi_attach_group_event, NULL, EVENTHANDLER_PRI_ANY);
+	pfi_change_group_cookie = EVENTHANDLER_REGISTER(group_change_event,
+	    pfi_change_group_event, NULL, EVENTHANDLER_PRI_ANY);
+	pfi_detach_group_cookie = EVENTHANDLER_REGISTER(group_detach_event,
+	    pfi_detach_group_event, NULL, EVENTHANDLER_PRI_ANY);
+	pfi_ifaddr_event_cookie = EVENTHANDLER_REGISTER(ifaddr_event,
+	    pfi_ifaddr_event, NULL, EVENTHANDLER_PRI_ANY);
+#endif
+}
+
+#ifdef __FreeBSD__
+void
+pfi_cleanup(void)
+{
+	struct pfi_kif *p;
+
+	PF_UNLOCK();
+	EVENTHANDLER_DEREGISTER(ifnet_arrival_event, pfi_attach_cookie);
+	EVENTHANDLER_DEREGISTER(ifnet_departure_event, pfi_detach_cookie);
+	EVENTHANDLER_DEREGISTER(group_attach_event, pfi_attach_group_cookie);
+	EVENTHANDLER_DEREGISTER(group_change_event, pfi_change_group_cookie);
+	EVENTHANDLER_DEREGISTER(group_detach_event, pfi_detach_group_cookie);
+	EVENTHANDLER_DEREGISTER(ifaddr_event, pfi_ifaddr_event_cookie);
+	PF_LOCK();
+
+	pfi_all = NULL;
+	while ((p = RB_MIN(pfi_ifhead, &pfi_ifs))) {
+		if (p->pfik_rules || p->pfik_states) {
+			printf("pfi_cleanup: dangling refs for %s\n",
+			    p->pfik_name);
+		}
+
+		RB_REMOVE(pfi_ifhead, &pfi_ifs, p);
+		free(p, PFI_MTYPE);
+	}
+
+	free(pfi_buffer, PFI_MTYPE);
+}
+#endif
+
+struct pfi_kif *
+pfi_kif_get(const char *kif_name)
+{
+	struct pfi_kif		*kif;
+	struct pfi_kif_cmp	 s;
+
+	bzero(&s, sizeof(s));
+	strlcpy(s.pfik_name, kif_name, sizeof(s.pfik_name));
+	if ((kif = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&s)) != NULL)
+		return (kif);
+
+	/* create new one */
+#ifdef __FreeBSD__
+	if ((kif = malloc(sizeof(*kif), PFI_MTYPE, M_NOWAIT)) == NULL)
+#else
+	if ((kif = malloc(sizeof(*kif), PFI_MTYPE, M_DONTWAIT)) == NULL)
+#endif
+		return (NULL);
+
+	bzero(kif, sizeof(*kif));
+	strlcpy(kif->pfik_name, kif_name, sizeof(kif->pfik_name));
+#ifdef __FreeBSD__
+	/*
+	 * It seems that the value of time_second is in unintialzied state
+	 * when pf sets interface statistics clear time in boot phase if pf
+	 * was statically linked to kernel. Instead of setting the bogus
+	 * time value have pfi_get_ifaces handle this case. In
+	 * pfi_get_ifaces it uses boottime.tv_sec if it sees the time is 0.
+	 */
+	kif->pfik_tzero = time_second > 1 ? time_second : 0;
+#else
+	kif->pfik_tzero = time_second;
+#endif
+	TAILQ_INIT(&kif->pfik_dynaddrs);
+
+	RB_INSERT(pfi_ifhead, &pfi_ifs, kif);
+	return (kif);
+}
+
+void
+pfi_kif_ref(struct pfi_kif *kif, enum pfi_kif_refs what)
+{
+	switch (what) {
+	case PFI_KIF_REF_RULE:
+		kif->pfik_rules++;
+		break;
+	case PFI_KIF_REF_STATE:
+		if (!kif->pfik_states++)
+			TAILQ_INSERT_TAIL(&pfi_statehead, kif, pfik_w_states);
+		break;
+	default:
+		panic("pfi_kif_ref with unknown type");
+	}
+}
+
+void
+pfi_kif_unref(struct pfi_kif *kif, enum pfi_kif_refs what)
+{
+	if (kif == NULL)
+		return;
+
+	switch (what) {
+	case PFI_KIF_REF_NONE:
+		break;
+	case PFI_KIF_REF_RULE:
+		if (kif->pfik_rules <= 0) {
+			printf("pfi_kif_unref: rules refcount <= 0\n");
+			return;
+		}
+		kif->pfik_rules--;
+		break;
+	case PFI_KIF_REF_STATE:
+		if (kif->pfik_states <= 0) {
+			printf("pfi_kif_unref: state refcount <= 0\n");
+			return;
+		}
+		if (!--kif->pfik_states)
+			TAILQ_REMOVE(&pfi_statehead, kif, pfik_w_states);
+		break;
+	default:
+		panic("pfi_kif_unref with unknown type");
+	}
+
+	if (kif->pfik_ifp != NULL || kif->pfik_group != NULL || kif == pfi_all)
+		return;
+
+	if (kif->pfik_rules || kif->pfik_states)
+		return;
+
+	RB_REMOVE(pfi_ifhead, &pfi_ifs, kif);
+	free(kif, PFI_MTYPE);
+}
+
+int
+pfi_kif_match(struct pfi_kif *rule_kif, struct pfi_kif *packet_kif)
+{
+	struct ifg_list	*p;
+
+	if (rule_kif == NULL || rule_kif == packet_kif)
+		return (1);
+
+	if (rule_kif->pfik_group != NULL)
+		TAILQ_FOREACH(p, &packet_kif->pfik_ifp->if_groups, ifgl_next)
+			if (p->ifgl_group == rule_kif->pfik_group)
+				return (1);
+
+	return (0);
+}
+
+void
+pfi_attach_ifnet(struct ifnet *ifp)
+{
+	struct pfi_kif		*kif;
+	int			 s;
+
+	pfi_initialize();
+	s = splsoftnet();
+	pfi_update++;
+	if ((kif = pfi_kif_get(ifp->if_xname)) == NULL)
+		panic("pfi_kif_get failed");
+
+	kif->pfik_ifp = ifp;
+	ifp->if_pf_kif = (caddr_t)kif;
+
+#ifndef __FreeBSD__
+	if ((kif->pfik_ah_cookie = hook_establish(ifp->if_addrhooks, 1,
+	    pfi_kifaddr_update, kif)) == NULL)
+		panic("pfi_attach_ifnet: cannot allocate '%s' address hook",
+		    ifp->if_xname);
+#endif
+
+	pfi_kif_update(kif);
+
+	splx(s);
+}
+
+void
+pfi_detach_ifnet(struct ifnet *ifp)
+{
+	int			 s;
+	struct pfi_kif		*kif;
+
+	if ((kif = (struct pfi_kif *)ifp->if_pf_kif) == NULL)
+		return;
+
+	s = splsoftnet();
+	pfi_update++;
+#ifndef __FreeBSD__
+	hook_disestablish(ifp->if_addrhooks, kif->pfik_ah_cookie);
+#endif
+	pfi_kif_update(kif);
+
+	kif->pfik_ifp = NULL;
+	ifp->if_pf_kif = NULL;
+	pfi_kif_unref(kif, PFI_KIF_REF_NONE);
+	splx(s);
+}
+
+void
+pfi_attach_ifgroup(struct ifg_group *ifg)
+{
+	struct pfi_kif	*kif;
+	int		 s;
+
+	pfi_initialize();
+	s = splsoftnet();
+	pfi_update++;
+	if ((kif = pfi_kif_get(ifg->ifg_group)) == NULL)
+		panic("pfi_kif_get failed");
+
+	kif->pfik_group = ifg;
+	ifg->ifg_pf_kif = (caddr_t)kif;
+
+	splx(s);
+}
+
+void
+pfi_detach_ifgroup(struct ifg_group *ifg)
+{
+	int		 s;
+	struct pfi_kif	*kif;
+
+	if ((kif = (struct pfi_kif *)ifg->ifg_pf_kif) == NULL)
+		return;
+
+	s = splsoftnet();
+	pfi_update++;
+
+	kif->pfik_group = NULL;
+	ifg->ifg_pf_kif = NULL;
+	pfi_kif_unref(kif, PFI_KIF_REF_NONE);
+	splx(s);
+}
+
+void
+pfi_group_change(const char *group)
+{
+	struct pfi_kif		*kif;
+	int			 s;
+
+	s = splsoftnet();
+	pfi_update++;
+	if ((kif = pfi_kif_get(group)) == NULL)
+		panic("pfi_kif_get failed");
+
+	pfi_kif_update(kif);
+
+	splx(s);
+}
+
+int
+pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af)
+{
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		switch (dyn->pfid_acnt4) {
+		case 0:
+			return (0);
+		case 1:
+			return (PF_MATCHA(0, &dyn->pfid_addr4,
+			    &dyn->pfid_mask4, a, AF_INET));
+		default:
+			return (pfr_match_addr(dyn->pfid_kt, a, AF_INET));
+		}
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		switch (dyn->pfid_acnt6) {
+		case 0:
+			return (0);
+		case 1:
+			return (PF_MATCHA(0, &dyn->pfid_addr6,
+			    &dyn->pfid_mask6, a, AF_INET6));
+		default:
+			return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6));
+		}
+		break;
+#endif /* INET6 */
+	default:
+		return (0);
+	}
+}
+
+int
+pfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af)
+{
+	struct pfi_dynaddr	*dyn;
+	char			 tblname[PF_TABLE_NAME_SIZE];
+	struct pf_ruleset	*ruleset = NULL;
+	int			 s, rv = 0;
+
+	if (aw->type != PF_ADDR_DYNIFTL)
+		return (0);
+	if ((dyn = pool_get(&pfi_addr_pl, PR_NOWAIT)) == NULL)
+		return (1);
+	bzero(dyn, sizeof(*dyn));
+
+	s = splsoftnet();
+	if (!strcmp(aw->v.ifname, "self"))
+		dyn->pfid_kif = pfi_kif_get(IFG_ALL);
+	else
+		dyn->pfid_kif = pfi_kif_get(aw->v.ifname);
+	if (dyn->pfid_kif == NULL) {
+		rv = 1;
+		goto _bad;
+	}
+	pfi_kif_ref(dyn->pfid_kif, PFI_KIF_REF_RULE);
+
+	dyn->pfid_net = pfi_unmask(&aw->v.a.mask);
+	if (af == AF_INET && dyn->pfid_net == 32)
+		dyn->pfid_net = 128;
+	strlcpy(tblname, aw->v.ifname, sizeof(tblname));
+	if (aw->iflags & PFI_AFLAG_NETWORK)
+		strlcat(tblname, ":network", sizeof(tblname));
+	if (aw->iflags & PFI_AFLAG_BROADCAST)
+		strlcat(tblname, ":broadcast", sizeof(tblname));
+	if (aw->iflags & PFI_AFLAG_PEER)
+		strlcat(tblname, ":peer", sizeof(tblname));
+	if (aw->iflags & PFI_AFLAG_NOALIAS)
+		strlcat(tblname, ":0", sizeof(tblname));
+	if (dyn->pfid_net != 128)
+		snprintf(tblname + strlen(tblname),
+		    sizeof(tblname) - strlen(tblname), "/%d", dyn->pfid_net);
+	if ((ruleset = pf_find_or_create_ruleset(PF_RESERVED_ANCHOR)) == NULL) {
+		rv = 1;
+		goto _bad;
+	}
+
+	if ((dyn->pfid_kt = pfr_attach_table(ruleset, tblname)) == NULL) {
+		rv = 1;
+		goto _bad;
+	}
+
+	dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE;
+	dyn->pfid_iflags = aw->iflags;
+	dyn->pfid_af = af;
+
+	TAILQ_INSERT_TAIL(&dyn->pfid_kif->pfik_dynaddrs, dyn, entry);
+	aw->p.dyn = dyn;
+	pfi_kif_update(dyn->pfid_kif);
+	splx(s);
+	return (0);
+
+_bad:
+	if (dyn->pfid_kt != NULL)
+		pfr_detach_table(dyn->pfid_kt);
+	if (ruleset != NULL)
+		pf_remove_if_empty_ruleset(ruleset);
+	if (dyn->pfid_kif != NULL)
+		pfi_kif_unref(dyn->pfid_kif, PFI_KIF_REF_RULE);
+	pool_put(&pfi_addr_pl, dyn);
+	splx(s);
+	return (rv);
+}
+
+void
+pfi_kif_update(struct pfi_kif *kif)
+{
+	struct ifg_list		*ifgl;
+	struct pfi_dynaddr	*p;
+
+	/* update all dynaddr */
+	TAILQ_FOREACH(p, &kif->pfik_dynaddrs, entry)
+		pfi_dynaddr_update(p);
+
+	/* again for all groups kif is member of */
+	if (kif->pfik_ifp != NULL)
+		TAILQ_FOREACH(ifgl, &kif->pfik_ifp->if_groups, ifgl_next)
+			pfi_kif_update((struct pfi_kif *)
+			    ifgl->ifgl_group->ifg_pf_kif);
+}
+
+void
+pfi_dynaddr_update(struct pfi_dynaddr *dyn)
+{
+	struct pfi_kif		*kif;
+	struct pfr_ktable	*kt;
+
+	if (dyn == NULL || dyn->pfid_kif == NULL || dyn->pfid_kt == NULL)
+		panic("pfi_dynaddr_update");
+
+	kif = dyn->pfid_kif;
+	kt = dyn->pfid_kt;
+
+	if (kt->pfrkt_larg != pfi_update) {
+		/* this table needs to be brought up-to-date */
+		pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags);
+		kt->pfrkt_larg = pfi_update;
+	}
+	pfr_dynaddr_update(kt, dyn);
+}
+
+void
+pfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags)
+{
+	int			 e, size2 = 0;
+	struct ifg_member	*ifgm;
+
+	pfi_buffer_cnt = 0;
+
+	if (kif->pfik_ifp != NULL)
+		pfi_instance_add(kif->pfik_ifp, net, flags);
+	else if (kif->pfik_group != NULL)
+		TAILQ_FOREACH(ifgm, &kif->pfik_group->ifg_members, ifgm_next)
+			pfi_instance_add(ifgm->ifgm_ifp, net, flags);
+
+	if ((e = pfr_set_addrs(&kt->pfrkt_t, pfi_buffer, pfi_buffer_cnt, &size2,
+	    NULL, NULL, NULL, 0, PFR_TFLAG_ALLMASK)))
+		printf("pfi_table_update: cannot set %d new addresses "
+		    "into table %s: %d\n", pfi_buffer_cnt, kt->pfrkt_name, e);
+}
+
+void
+pfi_instance_add(struct ifnet *ifp, int net, int flags)
+{
+	struct ifaddr	*ia;
+	int		 got4 = 0, got6 = 0;
+	int		 net2, af;
+
+	if (ifp == NULL)
+		return;
+	TAILQ_FOREACH(ia, &ifp->if_addrlist, ifa_list) {
+		if (ia->ifa_addr == NULL)
+			continue;
+		af = ia->ifa_addr->sa_family;
+		if (af != AF_INET && af != AF_INET6)
+			continue;
+#ifdef __FreeBSD__
+		/*
+		 * XXX: For point-to-point interfaces, (ifname:0) and IPv4,
+		 *	jump over addresses without a proper route to work
+		 *	around a problem with ppp not fully removing the
+		 *	address used during IPCP.
+		 */
+		if ((ifp->if_flags & IFF_POINTOPOINT) &&
+		    !(ia->ifa_flags & IFA_ROUTE) &&
+		    (flags & PFI_AFLAG_NOALIAS) && (af == AF_INET))
+			continue;
+#endif
+		if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6)
+			continue;
+		if ((flags & PFI_AFLAG_BROADCAST) &&
+		    !(ifp->if_flags & IFF_BROADCAST))
+			continue;
+		if ((flags & PFI_AFLAG_PEER) &&
+		    !(ifp->if_flags & IFF_POINTOPOINT))
+			continue;
+		if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 &&
+		    IN6_IS_ADDR_LINKLOCAL(
+		    &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr))
+			continue;
+		if (flags & PFI_AFLAG_NOALIAS) {
+			if (af == AF_INET && got4)
+				continue;
+			if (af == AF_INET6 && got6)
+				continue;
+		}
+		if (af == AF_INET)
+			got4 = 1;
+		else if (af == AF_INET6)
+			got6 = 1;
+		net2 = net;
+		if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) {
+			if (af == AF_INET)
+				net2 = pfi_unmask(&((struct sockaddr_in *)
+				    ia->ifa_netmask)->sin_addr);
+			else if (af == AF_INET6)
+				net2 = pfi_unmask(&((struct sockaddr_in6 *)
+				    ia->ifa_netmask)->sin6_addr);
+		}
+		if (af == AF_INET && net2 > 32)
+			net2 = 32;
+		if (flags & PFI_AFLAG_BROADCAST)
+			pfi_address_add(ia->ifa_broadaddr, af, net2);
+		else if (flags & PFI_AFLAG_PEER)
+			pfi_address_add(ia->ifa_dstaddr, af, net2);
+		else
+			pfi_address_add(ia->ifa_addr, af, net2);
+	}
+}
+
+void
+pfi_address_add(struct sockaddr *sa, int af, int net)
+{
+	struct pfr_addr	*p;
+	int		 i;
+
+	if (pfi_buffer_cnt >= pfi_buffer_max) {
+		int		 new_max = pfi_buffer_max * 2;
+
+		if (new_max > PFI_BUFFER_MAX) {
+			printf("pfi_address_add: address buffer full (%d/%d)\n",
+			    pfi_buffer_cnt, PFI_BUFFER_MAX);
+			return;
+		}
+		p = malloc(new_max * sizeof(*pfi_buffer), PFI_MTYPE,
+#ifdef __FreeBSD__
+		    M_NOWAIT);
+#else
+		    M_DONTWAIT);
+#endif
+		if (p == NULL) {
+			printf("pfi_address_add: no memory to grow buffer "
+			    "(%d/%d)\n", pfi_buffer_cnt, PFI_BUFFER_MAX);
+			return;
+		}
+		memcpy(p, pfi_buffer, pfi_buffer_max * sizeof(*pfi_buffer));
+		/* no need to zero buffer */
+		free(pfi_buffer, PFI_MTYPE);
+		pfi_buffer = p;
+		pfi_buffer_max = new_max;
+	}
+	if (af == AF_INET && net > 32)
+		net = 128;
+	p = pfi_buffer + pfi_buffer_cnt++;
+	bzero(p, sizeof(*p));
+	p->pfra_af = af;
+	p->pfra_net = net;
+	if (af == AF_INET)
+		p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr;
+	else if (af == AF_INET6) {
+		p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr;
+		if (IN6_IS_SCOPE_EMBED(&p->pfra_ip6addr))
+			p->pfra_ip6addr.s6_addr16[1] = 0;
+	}
+	/* mask network address bits */
+	if (net < 128)
+		((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8));
+	for (i = (p->pfra_net+7)/8; i < sizeof(p->pfra_u); i++)
+		((caddr_t)p)[i] = 0;
+}
+
+void
+pfi_dynaddr_remove(struct pf_addr_wrap *aw)
+{
+	int	s;
+
+	if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
+	    aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL)
+		return;
+
+	s = splsoftnet();
+	TAILQ_REMOVE(&aw->p.dyn->pfid_kif->pfik_dynaddrs, aw->p.dyn, entry);
+	pfi_kif_unref(aw->p.dyn->pfid_kif, PFI_KIF_REF_RULE);
+	aw->p.dyn->pfid_kif = NULL;
+	pfr_detach_table(aw->p.dyn->pfid_kt);
+	aw->p.dyn->pfid_kt = NULL;
+	pool_put(&pfi_addr_pl, aw->p.dyn);
+	aw->p.dyn = NULL;
+	splx(s);
+}
+
+void
+pfi_dynaddr_copyout(struct pf_addr_wrap *aw)
+{
+	if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
+	    aw->p.dyn->pfid_kif == NULL)
+		return;
+	aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6;
+}
+
+void
+pfi_kifaddr_update(void *v)
+{
+	int			 s;
+	struct pfi_kif		*kif = (struct pfi_kif *)v;
+
+	s = splsoftnet();
+	pfi_update++;
+	pfi_kif_update(kif);
+	splx(s);
+}
+
+int
+pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q)
+{
+	return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ));
+}
+
+void
+pfi_fill_oldstatus(struct pf_status *pfs)
+{
+	struct pfi_kif		*p;
+	struct pfi_kif_cmp 	 key;
+	int			 i, j, k, s;
+
+	strlcpy(key.pfik_name, pfs->ifname, sizeof(key.pfik_name));
+	s = splsoftnet();
+	p = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&key);
+	if (p == NULL) {
+		splx(s);
+		return;
+	}
+	bzero(pfs->pcounters, sizeof(pfs->pcounters));
+	bzero(pfs->bcounters, sizeof(pfs->bcounters));
+	for (i = 0; i < 2; i++)
+		for (j = 0; j < 2; j++)
+			for (k = 0; k < 2; k++) {
+				pfs->pcounters[i][j][k] =
+					p->pfik_packets[i][j][k];
+				pfs->bcounters[i][j] +=
+					p->pfik_bytes[i][j][k];
+			}
+	splx(s);
+}
+
+int
+pfi_clr_istats(const char *name)
+{
+	struct pfi_kif	*p;
+	int		 s;
+
+	s = splsoftnet();
+	RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
+		if (pfi_skip_if(name, p))
+			continue;
+		bzero(p->pfik_packets, sizeof(p->pfik_packets));
+		bzero(p->pfik_bytes, sizeof(p->pfik_bytes));
+		p->pfik_tzero = time_second;
+	}
+	splx(s);
+
+	return (0);
+}
+
+int
+pfi_get_ifaces(const char *name, struct pfi_kif *buf, int *size)
+{
+	struct pfi_kif	*p, *nextp;
+	int		 s, n = 0;
+#ifdef __FreeBSD__
+	int		 error;
+#endif
+
+	s = splsoftnet();
+	for (p = RB_MIN(pfi_ifhead, &pfi_ifs); p; p = nextp) {
+		nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
+		if (pfi_skip_if(name, p))
+			continue;
+		if (*size > n++) {
+			if (!p->pfik_tzero)
+				p->pfik_tzero = time_second;
+			pfi_kif_ref(p, PFI_KIF_REF_RULE);
+#ifdef __FreeBSD__
+			PF_COPYOUT(p, buf++, sizeof(*buf), error);
+			if (error) {
+#else
+			if (copyout(p, buf++, sizeof(*buf))) {
+#endif
+				pfi_kif_unref(p, PFI_KIF_REF_RULE);
+				splx(s);
+				return (EFAULT);
+			}
+			nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
+			pfi_kif_unref(p, PFI_KIF_REF_RULE);
+		}
+	}
+	splx(s);
+	*size = n;
+	return (0);
+}
+
+int
+pfi_skip_if(const char *filter, struct pfi_kif *p)
+{
+	int	n;
+
+	if (filter == NULL || !*filter)
+		return (0);
+	if (!strcmp(p->pfik_name, filter))
+		return (0);	/* exact match */
+	n = strlen(filter);
+	if (n < 1 || n >= IFNAMSIZ)
+		return (1);	/* sanity check */
+	if (filter[n-1] >= '0' && filter[n-1] <= '9')
+		return (1);	/* only do exact match in that case */
+	if (strncmp(p->pfik_name, filter, n))
+		return (1);	/* prefix doesn't match */
+	return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9');
+}
+
+int
+pfi_set_flags(const char *name, int flags)
+{
+	struct pfi_kif	*p;
+	int		 s;
+
+	s = splsoftnet();
+	RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
+		if (pfi_skip_if(name, p))
+			continue;
+		p->pfik_flags |= flags;
+	}
+	splx(s);
+	return (0);
+}
+
+int
+pfi_clear_flags(const char *name, int flags)
+{
+	struct pfi_kif	*p;
+	int		 s;
+
+	s = splsoftnet();
+	RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
+		if (pfi_skip_if(name, p))
+			continue;
+		p->pfik_flags &= ~flags;
+	}
+	splx(s);
+	return (0);
+}
+
+/* from pf_print_state.c */
+int
+pfi_unmask(void *addr)
+{
+	struct pf_addr *m = addr;
+	int i = 31, j = 0, b = 0;
+	u_int32_t tmp;
+
+	while (j < 4 && m->addr32[j] == 0xffffffff) {
+		b += 32;
+		j++;
+	}
+	if (j < 4) {
+		tmp = ntohl(m->addr32[j]);
+		for (i = 31; tmp & (1 << i); --i)
+			b++;
+	}
+	return (b);
+}
+
+#ifdef __FreeBSD__
+void
+pfi_attach_ifnet_event(void *arg __unused, struct ifnet *ifp)
+{
+	PF_LOCK();
+	pfi_attach_ifnet(ifp);
+#ifdef ALTQ
+	pf_altq_ifnet_event(ifp, 0);
+#endif
+	PF_UNLOCK();
+}
+
+void
+pfi_detach_ifnet_event(void *arg __unused, struct ifnet *ifp)
+{
+	PF_LOCK();
+	pfi_detach_ifnet(ifp);
+#ifdef ALTQ
+	pf_altq_ifnet_event(ifp, 1);
+#endif
+	PF_UNLOCK();
+}
+
+void
+pfi_attach_group_event(void *arg __unused, struct ifg_group *ifg)
+{
+	PF_LOCK();
+	pfi_attach_ifgroup(ifg);
+	PF_UNLOCK();
+}
+
+void
+pfi_change_group_event(void *arg __unused, char *gname)
+{
+	PF_LOCK();
+	pfi_group_change(gname);
+	PF_UNLOCK();
+}
+
+void
+pfi_detach_group_event(void *arg __unused, struct ifg_group *ifg)
+{
+	PF_LOCK();
+	pfi_detach_ifgroup(ifg);
+	PF_UNLOCK();
+}
+
+void
+pfi_ifaddr_event(void *arg __unused, struct ifnet *ifp)
+{
+	PF_LOCK();
+	if (ifp && ifp->if_pf_kif)
+		pfi_kifaddr_update(ifp->if_pf_kif);
+	PF_UNLOCK();
+}
+#endif /* __FreeBSD__ */