Move files to match FreeBSD layout

1 files changed, 7771 insertions, 0 deletions

diff --git a/freebsd/sys/contrib/pf/net/pf.c b/freebsd/sys/contrib/pf/net/pf.c
new file mode 100644
index 00000000..4ac395f1
--- /dev/null
+++ b/freebsd/sys/contrib/pf/net/pf.c
@@ -0,0 +1,7771 @@
+#include <freebsd/machine/rtems-bsd-config.h>
+
+/*	$OpenBSD: pf.c,v 1.527 2007/02/22 15:23:23 pyr Exp $ */
+/* add:	$OpenBSD: pf.c,v 1.559 2007/09/18 18:45:59 markus Exp $ */
+
+/*
+ * Copyright (c) 2001 Daniel Hartmeier
+ * Copyright (c) 2002,2003 Henning Brauer
+ * 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.
+ *
+ * Effort sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F30602-01-2-0537.
+ *
+ */
+
+#ifdef __FreeBSD__
+#include <freebsd/local/opt_inet.h>
+#include <freebsd/local/opt_inet6.h>
+
+#include <freebsd/sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+#endif
+
+#ifdef __FreeBSD__
+#include <freebsd/local/opt_bpf.h>
+#include <freebsd/local/opt_pf.h>
+
+#ifdef DEV_BPF
+#define	NBPFILTER	DEV_BPF
+#else
+#define	NBPFILTER	0
+#endif
+
+#ifdef DEV_PFLOG
+#define	NPFLOG		DEV_PFLOG
+#else
+#define	NPFLOG		0
+#endif
+
+#ifdef DEV_PFSYNC
+#define	NPFSYNC		DEV_PFSYNC
+#else
+#define	NPFSYNC		0
+#endif
+
+#else
+#include <freebsd/local/bpfilter.h>
+#include <freebsd/local/pflog.h>
+#include <freebsd/local/pfsync.h>
+#endif
+
+#include <freebsd/sys/param.h>
+#include <freebsd/sys/systm.h>
+#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>
+#include <freebsd/sys/time.h>
+#ifdef __FreeBSD__
+#include <freebsd/sys/sysctl.h>
+#include <freebsd/sys/endian.h>
+#else
+#include <freebsd/sys/pool.h>
+#endif
+#include <freebsd/sys/proc.h>
+#ifdef __FreeBSD__
+#include <freebsd/sys/kthread.h>
+#include <freebsd/sys/lock.h>
+#include <freebsd/sys/sx.h>
+#else
+#include <freebsd/sys/rwlock.h>
+#endif
+
+#include <freebsd/net/if.h>
+#include <freebsd/net/if_types.h>
+#include <freebsd/net/bpf.h>
+#include <freebsd/net/route.h>
+#ifndef __FreeBSD__
+#include <freebsd/net/radix_mpath.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/netinet/tcp.h>
+#include <freebsd/netinet/tcp_seq.h>
+#include <freebsd/netinet/udp.h>
+#include <freebsd/netinet/ip_icmp.h>
+#include <freebsd/netinet/in_pcb.h>
+#include <freebsd/netinet/tcp_timer.h>
+#include <freebsd/netinet/tcp_var.h>
+#include <freebsd/netinet/udp_var.h>
+#include <freebsd/netinet/icmp_var.h>
+#include <freebsd/netinet/if_ether.h>
+
+#ifndef __FreeBSD__
+#include <freebsd/dev/rndvar.h>
+#endif
+#include <freebsd/net/pfvar.h>
+#include <freebsd/net/if_pflog.h>
+
+#if NPFSYNC > 0
+#include <freebsd/net/if_pfsync.h>
+#endif /* NPFSYNC > 0 */
+
+#ifdef INET6
+#include <freebsd/netinet/ip6.h>
+#include <freebsd/netinet/in_pcb.h>
+#include <freebsd/netinet/icmp6.h>
+#include <freebsd/netinet6/nd6.h>
+#ifdef __FreeBSD__
+#include <freebsd/netinet6/ip6_var.h>
+#include <freebsd/netinet6/in6_pcb.h>
+#endif
+#endif /* INET6 */
+
+#ifdef __FreeBSD__
+#include <freebsd/machine/in_cksum.h>
+#include <freebsd/sys/limits.h>
+#include <freebsd/sys/ucred.h>
+#include <freebsd/security/mac/mac_framework.h>
+
+extern int ip_optcopy(struct ip *, struct ip *);
+extern int debug_pfugidhack;
+#endif
+
+#define DPFPRINTF(n, x)	if (pf_status.debug >= (n)) printf x
+
+/*
+ * Global variables
+ */
+
+struct pf_altqqueue	 pf_altqs[2];
+struct pf_palist	 pf_pabuf;
+struct pf_altqqueue	*pf_altqs_active;
+struct pf_altqqueue	*pf_altqs_inactive;
+struct pf_status	 pf_status;
+
+u_int32_t		 ticket_altqs_active;
+u_int32_t		 ticket_altqs_inactive;
+int			 altqs_inactive_open;
+u_int32_t		 ticket_pabuf;
+
+struct pf_anchor_stackframe {
+	struct pf_ruleset			*rs;
+	struct pf_rule				*r;
+	struct pf_anchor_node			*parent;
+	struct pf_anchor			*child;
+} pf_anchor_stack[64];
+
+#ifdef __FreeBSD__
+uma_zone_t		 pf_src_tree_pl, pf_rule_pl;
+uma_zone_t		 pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
+#else
+struct pool		 pf_src_tree_pl, pf_rule_pl;
+struct pool		 pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
+#endif
+
+void			 pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
+
+void			 pf_init_threshold(struct pf_threshold *, u_int32_t,
+			    u_int32_t);
+void			 pf_add_threshold(struct pf_threshold *);
+int			 pf_check_threshold(struct pf_threshold *);
+
+void			 pf_change_ap(struct pf_addr *, u_int16_t *,
+			    u_int16_t *, u_int16_t *, struct pf_addr *,
+			    u_int16_t, u_int8_t, sa_family_t);
+int			 pf_modulate_sack(struct mbuf *, int, struct pf_pdesc *,
+			    struct tcphdr *, struct pf_state_peer *);
+#ifdef INET6
+void			 pf_change_a6(struct pf_addr *, u_int16_t *,
+			    struct pf_addr *, u_int8_t);
+#endif /* INET6 */
+void			 pf_change_icmp(struct pf_addr *, u_int16_t *,
+			    struct pf_addr *, struct pf_addr *, u_int16_t,
+			    u_int16_t *, u_int16_t *, u_int16_t *,
+			    u_int16_t *, u_int8_t, sa_family_t);
+#ifdef __FreeBSD__
+void			 pf_send_tcp(struct mbuf *,
+			    const struct pf_rule *, sa_family_t,
+#else
+void			 pf_send_tcp(const struct pf_rule *, sa_family_t,
+#endif
+			    const struct pf_addr *, const struct pf_addr *,
+			    u_int16_t, u_int16_t, u_int32_t, u_int32_t,
+			    u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
+			    u_int16_t, struct ether_header *, struct ifnet *);
+void			 pf_send_icmp(struct mbuf *, u_int8_t, u_int8_t,
+			    sa_family_t, struct pf_rule *);
+struct pf_rule		*pf_match_translation(struct pf_pdesc *, struct mbuf *,
+			    int, int, struct pfi_kif *,
+			    struct pf_addr *, u_int16_t, struct pf_addr *,
+			    u_int16_t, int);
+struct pf_rule		*pf_get_translation(struct pf_pdesc *, struct mbuf *,
+			    int, int, struct pfi_kif *, struct pf_src_node **,
+			    struct pf_addr *, u_int16_t,
+			    struct pf_addr *, u_int16_t,
+			    struct pf_addr *, u_int16_t *);
+int			 pf_test_tcp(struct pf_rule **, struct pf_state **,
+			    int, struct pfi_kif *, struct mbuf *, int,
+			    void *, struct pf_pdesc *, struct pf_rule **,
+#ifdef __FreeBSD__
+			    struct pf_ruleset **, struct ifqueue *,
+			    struct inpcb *);
+#else
+			    struct pf_ruleset **, struct ifqueue *);
+#endif
+int			 pf_test_udp(struct pf_rule **, struct pf_state **,
+			    int, struct pfi_kif *, struct mbuf *, int,
+			    void *, struct pf_pdesc *, struct pf_rule **,
+#ifdef __FreeBSD__
+			    struct pf_ruleset **, struct ifqueue *,
+			    struct inpcb *);
+#else
+			    struct pf_ruleset **, struct ifqueue *);
+#endif
+int			 pf_test_icmp(struct pf_rule **, struct pf_state **,
+			    int, struct pfi_kif *, struct mbuf *, int,
+			    void *, struct pf_pdesc *, struct pf_rule **,
+			    struct pf_ruleset **, struct ifqueue *);
+int			 pf_test_other(struct pf_rule **, struct pf_state **,
+			    int, struct pfi_kif *, struct mbuf *, int, void *,
+			    struct pf_pdesc *, struct pf_rule **,
+			    struct pf_ruleset **, struct ifqueue *);
+int			 pf_test_fragment(struct pf_rule **, int,
+			    struct pfi_kif *, struct mbuf *, void *,
+			    struct pf_pdesc *, struct pf_rule **,
+			    struct pf_ruleset **);
+int			 pf_tcp_track_full(struct pf_state_peer *,
+			    struct pf_state_peer *, struct pf_state **,
+			    struct pfi_kif *, struct mbuf *, int,
+			    struct pf_pdesc *, u_short *, int *);
+int			 pf_tcp_track_sloppy(struct pf_state_peer *,
+			    struct pf_state_peer *, struct pf_state **,
+			    struct pf_pdesc *, u_short *);
+int			 pf_test_state_tcp(struct pf_state **, int,
+			    struct pfi_kif *, struct mbuf *, int,
+			    void *, struct pf_pdesc *, u_short *);
+int			 pf_test_state_udp(struct pf_state **, int,
+			    struct pfi_kif *, struct mbuf *, int,
+			    void *, struct pf_pdesc *);
+int			 pf_test_state_icmp(struct pf_state **, int,
+			    struct pfi_kif *, struct mbuf *, int,
+			    void *, struct pf_pdesc *, u_short *);
+int			 pf_test_state_other(struct pf_state **, int,
+			    struct pfi_kif *, struct pf_pdesc *);
+int			 pf_match_tag(struct mbuf *, struct pf_rule *,
+			     struct pf_mtag *, int *);
+int			 pf_step_out_of_anchor(int *, struct pf_ruleset **,
+			     int, struct pf_rule **, struct pf_rule **,
+			     int *);
+void			 pf_hash(struct pf_addr *, struct pf_addr *,
+			    struct pf_poolhashkey *, sa_family_t);
+int			 pf_map_addr(u_int8_t, struct pf_rule *,
+			    struct pf_addr *, struct pf_addr *,
+			    struct pf_addr *, struct pf_src_node **);
+int			 pf_get_sport(sa_family_t, u_int8_t, struct pf_rule *,
+			    struct pf_addr *, struct pf_addr *, u_int16_t,
+			    struct pf_addr *, u_int16_t*, u_int16_t, u_int16_t,
+			    struct pf_src_node **);
+void			 pf_route(struct mbuf **, struct pf_rule *, int,
+			    struct ifnet *, struct pf_state *,
+			    struct pf_pdesc *);
+void			 pf_route6(struct mbuf **, struct pf_rule *, int,
+			    struct ifnet *, struct pf_state *,
+			    struct pf_pdesc *);
+#ifdef __FreeBSD__
+/* XXX: import */
+#else
+int			 pf_socket_lookup(int, struct pf_pdesc *);
+#endif
+u_int8_t		 pf_get_wscale(struct mbuf *, int, u_int16_t,
+			    sa_family_t);
+u_int16_t		 pf_get_mss(struct mbuf *, int, u_int16_t,
+			    sa_family_t);
+u_int16_t		 pf_calc_mss(struct pf_addr *, sa_family_t,
+				u_int16_t);
+void			 pf_set_rt_ifp(struct pf_state *,
+			    struct pf_addr *);
+int			 pf_check_proto_cksum(struct mbuf *, int, int,
+			    u_int8_t, sa_family_t);
+int			 pf_addr_wrap_neq(struct pf_addr_wrap *,
+			    struct pf_addr_wrap *);
+struct pf_state		*pf_find_state_recurse(struct pfi_kif *,
+			    struct pf_state_cmp *, u_int8_t);
+int			 pf_src_connlimit(struct pf_state **);
+int			 pf_check_congestion(struct ifqueue *);
+
+#ifdef __FreeBSD__
+int in4_cksum(struct mbuf *m, u_int8_t nxt, int off, int len);
+
+extern int pf_end_threads;
+
+struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
+#else
+extern struct pool pfr_ktable_pl;
+extern struct pool pfr_kentry_pl;
+
+struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX] = {
+	{ &pf_state_pl, PFSTATE_HIWAT },
+	{ &pf_src_tree_pl, PFSNODE_HIWAT },
+	{ &pf_frent_pl, PFFRAG_FRENT_HIWAT },
+	{ &pfr_ktable_pl, PFR_KTABLE_HIWAT },
+	{ &pfr_kentry_pl, PFR_KENTRY_HIWAT }
+};
+#endif
+
+#define STATE_LOOKUP()							\
+	do {								\
+		if (direction == PF_IN)					\
+			*state = pf_find_state_recurse(			\
+			    kif, &key, PF_EXT_GWY);			\
+		else							\
+			*state = pf_find_state_recurse(			\
+			    kif, &key, PF_LAN_EXT);			\
+		if (*state == NULL || (*state)->timeout == PFTM_PURGE)	\
+			return (PF_DROP);				\
+		if (direction == PF_OUT &&				\
+		    (((*state)->rule.ptr->rt == PF_ROUTETO &&		\
+		    (*state)->rule.ptr->direction == PF_OUT) ||		\
+		    ((*state)->rule.ptr->rt == PF_REPLYTO &&		\
+		    (*state)->rule.ptr->direction == PF_IN)) &&		\
+		    (*state)->rt_kif != NULL &&				\
+		    (*state)->rt_kif != kif)				\
+			return (PF_PASS);				\
+	} while (0)
+
+#define	STATE_TRANSLATE(s) \
+	(s)->lan.addr.addr32[0] != (s)->gwy.addr.addr32[0] || \
+	((s)->af == AF_INET6 && \
+	((s)->lan.addr.addr32[1] != (s)->gwy.addr.addr32[1] || \
+	(s)->lan.addr.addr32[2] != (s)->gwy.addr.addr32[2] || \
+	(s)->lan.addr.addr32[3] != (s)->gwy.addr.addr32[3])) || \
+	(s)->lan.port != (s)->gwy.port
+
+#define BOUND_IFACE(r, k) \
+	((r)->rule_flag & PFRULE_IFBOUND) ? (k) : pfi_all
+
+#define STATE_INC_COUNTERS(s)				\
+	do {						\
+		s->rule.ptr->states++;			\
+		if (s->anchor.ptr != NULL)		\
+			s->anchor.ptr->states++;	\
+		if (s->nat_rule.ptr != NULL)		\
+			s->nat_rule.ptr->states++;	\
+	} while (0)
+
+#define STATE_DEC_COUNTERS(s)				\
+	do {						\
+		if (s->nat_rule.ptr != NULL)		\
+			s->nat_rule.ptr->states--;	\
+		if (s->anchor.ptr != NULL)		\
+			s->anchor.ptr->states--;	\
+		s->rule.ptr->states--;			\
+	} while (0)
+
+struct pf_src_tree tree_src_tracking;
+
+struct pf_state_tree_id tree_id;
+struct pf_state_queue state_list;
+
+#ifdef __FreeBSD__
+static int pf_src_compare(struct pf_src_node *, struct pf_src_node *);
+static int pf_state_compare_lan_ext(struct pf_state *, struct pf_state *);
+static int pf_state_compare_ext_gwy(struct pf_state *, struct pf_state *);
+static int pf_state_compare_id(struct pf_state *, struct pf_state *);
+#endif
+
+RB_GENERATE(pf_src_tree, pf_src_node, entry, pf_src_compare);
+RB_GENERATE(pf_state_tree_lan_ext, pf_state,
+    u.s.entry_lan_ext, pf_state_compare_lan_ext);
+RB_GENERATE(pf_state_tree_ext_gwy, pf_state,
+    u.s.entry_ext_gwy, pf_state_compare_ext_gwy);
+RB_GENERATE(pf_state_tree_id, pf_state,
+    u.s.entry_id, pf_state_compare_id);
+
+#ifdef __FreeBSD__
+static int
+#else
+static __inline int
+#endif
+pf_src_compare(struct pf_src_node *a, struct pf_src_node *b)
+{
+	int	diff;
+
+	if (a->rule.ptr > b->rule.ptr)
+		return (1);
+	if (a->rule.ptr < b->rule.ptr)
+		return (-1);
+	if ((diff = a->af - b->af) != 0)
+		return (diff);
+	switch (a->af) {
+#ifdef INET
+	case AF_INET:
+		if (a->addr.addr32[0] > b->addr.addr32[0])
+			return (1);
+		if (a->addr.addr32[0] < b->addr.addr32[0])
+			return (-1);
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		if (a->addr.addr32[3] > b->addr.addr32[3])
+			return (1);
+		if (a->addr.addr32[3] < b->addr.addr32[3])
+			return (-1);
+		if (a->addr.addr32[2] > b->addr.addr32[2])
+			return (1);
+		if (a->addr.addr32[2] < b->addr.addr32[2])
+			return (-1);
+		if (a->addr.addr32[1] > b->addr.addr32[1])
+			return (1);
+		if (a->addr.addr32[1] < b->addr.addr32[1])
+			return (-1);
+		if (a->addr.addr32[0] > b->addr.addr32[0])
+			return (1);
+		if (a->addr.addr32[0] < b->addr.addr32[0])
+			return (-1);
+		break;
+#endif /* INET6 */
+	}
+	return (0);
+}
+
+#ifdef __FreeBSD__
+static int
+#else
+static __inline int
+#endif
+pf_state_compare_lan_ext(struct pf_state *a, struct pf_state *b)
+{
+	int	diff;
+
+	if ((diff = a->proto - b->proto) != 0)
+		return (diff);
+	if ((diff = a->af - b->af) != 0)
+		return (diff);
+	switch (a->af) {
+#ifdef INET
+	case AF_INET:
+		if (a->lan.addr.addr32[0] > b->lan.addr.addr32[0])
+			return (1);
+		if (a->lan.addr.addr32[0] < b->lan.addr.addr32[0])
+			return (-1);
+		if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
+			return (1);
+		if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
+			return (-1);
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		if (a->lan.addr.addr32[3] > b->lan.addr.addr32[3])
+			return (1);
+		if (a->lan.addr.addr32[3] < b->lan.addr.addr32[3])
+			return (-1);
+		if (a->ext.addr.addr32[3] > b->ext.addr.addr32[3])
+			return (1);
+		if (a->ext.addr.addr32[3] < b->ext.addr.addr32[3])
+			return (-1);
+		if (a->lan.addr.addr32[2] > b->lan.addr.addr32[2])
+			return (1);
+		if (a->lan.addr.addr32[2] < b->lan.addr.addr32[2])
+			return (-1);
+		if (a->ext.addr.addr32[2] > b->ext.addr.addr32[2])
+			return (1);
+		if (a->ext.addr.addr32[2] < b->ext.addr.addr32[2])
+			return (-1);
+		if (a->lan.addr.addr32[1] > b->lan.addr.addr32[1])
+			return (1);
+		if (a->lan.addr.addr32[1] < b->lan.addr.addr32[1])
+			return (-1);
+		if (a->ext.addr.addr32[1] > b->ext.addr.addr32[1])
+			return (1);
+		if (a->ext.addr.addr32[1] < b->ext.addr.addr32[1])
+			return (-1);
+		if (a->lan.addr.addr32[0] > b->lan.addr.addr32[0])
+			return (1);
+		if (a->lan.addr.addr32[0] < b->lan.addr.addr32[0])
+			return (-1);
+		if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
+			return (1);
+		if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
+			return (-1);
+		break;
+#endif /* INET6 */
+	}
+
+	if ((diff = a->lan.port - b->lan.port) != 0)
+		return (diff);
+	if ((diff = a->ext.port - b->ext.port) != 0)
+		return (diff);
+
+	return (0);
+}
+
+#ifdef __FreeBSD__
+static int
+#else
+static __inline int
+#endif
+pf_state_compare_ext_gwy(struct pf_state *a, struct pf_state *b)
+{
+	int	diff;
+
+	if ((diff = a->proto - b->proto) != 0)
+		return (diff);
+	if ((diff = a->af - b->af) != 0)
+		return (diff);
+	switch (a->af) {
+#ifdef INET
+	case AF_INET:
+		if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
+			return (1);
+		if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
+			return (-1);
+		if (a->gwy.addr.addr32[0] > b->gwy.addr.addr32[0])
+			return (1);
+		if (a->gwy.addr.addr32[0] < b->gwy.addr.addr32[0])
+			return (-1);
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		if (a->ext.addr.addr32[3] > b->ext.addr.addr32[3])
+			return (1);
+		if (a->ext.addr.addr32[3] < b->ext.addr.addr32[3])
+			return (-1);
+		if (a->gwy.addr.addr32[3] > b->gwy.addr.addr32[3])
+			return (1);
+		if (a->gwy.addr.addr32[3] < b->gwy.addr.addr32[3])
+			return (-1);
+		if (a->ext.addr.addr32[2] > b->ext.addr.addr32[2])
+			return (1);
+		if (a->ext.addr.addr32[2] < b->ext.addr.addr32[2])
+			return (-1);
+		if (a->gwy.addr.addr32[2] > b->gwy.addr.addr32[2])
+			return (1);
+		if (a->gwy.addr.addr32[2] < b->gwy.addr.addr32[2])
+			return (-1);
+		if (a->ext.addr.addr32[1] > b->ext.addr.addr32[1])
+			return (1);
+		if (a->ext.addr.addr32[1] < b->ext.addr.addr32[1])
+			return (-1);
+		if (a->gwy.addr.addr32[1] > b->gwy.addr.addr32[1])
+			return (1);
+		if (a->gwy.addr.addr32[1] < b->gwy.addr.addr32[1])
+			return (-1);
+		if (a->ext.addr.addr32[0] > b->ext.addr.addr32[0])
+			return (1);
+		if (a->ext.addr.addr32[0] < b->ext.addr.addr32[0])
+			return (-1);
+		if (a->gwy.addr.addr32[0] > b->gwy.addr.addr32[0])
+			return (1);
+		if (a->gwy.addr.addr32[0] < b->gwy.addr.addr32[0])
+			return (-1);
+		break;
+#endif /* INET6 */
+	}
+
+	if ((diff = a->ext.port - b->ext.port) != 0)
+		return (diff);
+	if ((diff = a->gwy.port - b->gwy.port) != 0)
+		return (diff);
+
+	return (0);
+}
+
+#ifdef __FreeBSD__
+static int
+#else
+static __inline int
+#endif
+pf_state_compare_id(struct pf_state *a, struct pf_state *b)
+{
+	if (a->id > b->id)
+		return (1);
+	if (a->id < b->id)
+		return (-1);
+	if (a->creatorid > b->creatorid)
+		return (1);
+	if (a->creatorid < b->creatorid)
+		return (-1);
+
+	return (0);
+}
+
+#ifdef INET6
+void
+pf_addrcpy(struct pf_addr *dst, struct pf_addr *src, sa_family_t af)
+{
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		dst->addr32[0] = src->addr32[0];
+		break;
+#endif /* INET */
+	case AF_INET6:
+		dst->addr32[0] = src->addr32[0];
+		dst->addr32[1] = src->addr32[1];
+		dst->addr32[2] = src->addr32[2];
+		dst->addr32[3] = src->addr32[3];
+		break;
+	}
+}
+#endif /* INET6 */
+
+struct pf_state *
+pf_find_state_byid(struct pf_state_cmp *key)
+{
+	pf_status.fcounters[FCNT_STATE_SEARCH]++;
+	return (RB_FIND(pf_state_tree_id, &tree_id, (struct pf_state *)key));
+}
+
+struct pf_state *
+pf_find_state_recurse(struct pfi_kif *kif, struct pf_state_cmp *key, u_int8_t tree)
+{
+	struct pf_state *s;
+
+	pf_status.fcounters[FCNT_STATE_SEARCH]++;
+
+	switch (tree) {
+	case PF_LAN_EXT:
+		if ((s = RB_FIND(pf_state_tree_lan_ext, &kif->pfik_lan_ext,
+		    (struct pf_state *)key)) != NULL)
+			return (s);
+		if ((s = RB_FIND(pf_state_tree_lan_ext, &pfi_all->pfik_lan_ext,
+		    (struct pf_state *)key)) != NULL)
+			return (s);
+		return (NULL);
+	case PF_EXT_GWY:
+		if ((s = RB_FIND(pf_state_tree_ext_gwy, &kif->pfik_ext_gwy,
+		    (struct pf_state *)key)) != NULL)
+			return (s);
+		if ((s = RB_FIND(pf_state_tree_ext_gwy, &pfi_all->pfik_ext_gwy,
+		    (struct pf_state *)key)) != NULL)
+			return (s);
+		return (NULL);
+	default:
+		panic("pf_find_state_recurse");
+	}
+}
+
+struct pf_state *
+pf_find_state_all(struct pf_state_cmp *key, u_int8_t tree, int *more)
+{
+	struct pf_state *s, *ss = NULL;
+	struct pfi_kif	*kif;
+
+	pf_status.fcounters[FCNT_STATE_SEARCH]++;
+
+	switch (tree) {
+	case PF_LAN_EXT:
+		TAILQ_FOREACH(kif, &pfi_statehead, pfik_w_states) {
+			s = RB_FIND(pf_state_tree_lan_ext,
+			    &kif->pfik_lan_ext, (struct pf_state *)key);
+			if (s == NULL)
+				continue;
+			if (more == NULL)
+				return (s);
+			ss = s;
+			(*more)++;
+		}
+		return (ss);
+	case PF_EXT_GWY:
+		TAILQ_FOREACH(kif, &pfi_statehead, pfik_w_states) {
+			s = RB_FIND(pf_state_tree_ext_gwy,
+			    &kif->pfik_ext_gwy, (struct pf_state *)key);
+			if (s == NULL)
+				continue;
+			if (more == NULL)
+				return (s);
+			ss = s;
+			(*more)++;
+		}
+		return (ss);
+	default:
+		panic("pf_find_state_all");
+	}
+}
+
+void
+pf_init_threshold(struct pf_threshold *threshold,
+    u_int32_t limit, u_int32_t seconds)
+{
+	threshold->limit = limit * PF_THRESHOLD_MULT;
+	threshold->seconds = seconds;
+	threshold->count = 0;
+	threshold->last = time_second;
+}
+
+void
+pf_add_threshold(struct pf_threshold *threshold)
+{
+	u_int32_t t = time_second, diff = t - threshold->last;
+
+	if (diff >= threshold->seconds)
+		threshold->count = 0;
+	else
+		threshold->count -= threshold->count * diff /
+		    threshold->seconds;
+	threshold->count += PF_THRESHOLD_MULT;
+	threshold->last = t;
+}
+
+int
+pf_check_threshold(struct pf_threshold *threshold)
+{
+	return (threshold->count > threshold->limit);
+}
+
+int
+pf_src_connlimit(struct pf_state **state)
+{
+	struct pf_state	*s;
+	int bad = 0;
+
+	(*state)->src_node->conn++;
+	(*state)->src.tcp_est = 1;
+	pf_add_threshold(&(*state)->src_node->conn_rate);
+
+	if ((*state)->rule.ptr->max_src_conn &&
+	    (*state)->rule.ptr->max_src_conn <
+	    (*state)->src_node->conn) {
+		pf_status.lcounters[LCNT_SRCCONN]++;
+		bad++;
+	}
+
+	if ((*state)->rule.ptr->max_src_conn_rate.limit &&
+	    pf_check_threshold(&(*state)->src_node->conn_rate)) {
+		pf_status.lcounters[LCNT_SRCCONNRATE]++;
+		bad++;
+	}
+
+	if (!bad)
+		return (0);
+
+	if ((*state)->rule.ptr->overload_tbl) {
+		struct pfr_addr p;
+		u_int32_t	killed = 0;
+
+		pf_status.lcounters[LCNT_OVERLOAD_TABLE]++;
+		if (pf_status.debug >= PF_DEBUG_MISC) {
+			printf("pf_src_connlimit: blocking address ");
+			pf_print_host(&(*state)->src_node->addr, 0,
+			    (*state)->af);
+		}
+
+		bzero(&p, sizeof(p));
+		p.pfra_af = (*state)->af;
+		switch ((*state)->af) {
+#ifdef INET
+		case AF_INET:
+			p.pfra_net = 32;
+			p.pfra_ip4addr = (*state)->src_node->addr.v4;
+			break;
+#endif /* INET */
+#ifdef INET6
+		case AF_INET6:
+			p.pfra_net = 128;
+			p.pfra_ip6addr = (*state)->src_node->addr.v6;
+			break;
+#endif /* INET6 */
+		}
+
+		pfr_insert_kentry((*state)->rule.ptr->overload_tbl,
+		    &p, time_second);
+
+		/* kill existing states if that's required. */
+		if ((*state)->rule.ptr->flush) {
+			pf_status.lcounters[LCNT_OVERLOAD_FLUSH]++;
+
+			RB_FOREACH(s, pf_state_tree_id, &tree_id) {
+				/*
+				 * Kill states from this source.  (Only those
+				 * from the same rule if PF_FLUSH_GLOBAL is not
+				 * set)
+				 */
+				if (s->af == (*state)->af &&
+				    (((*state)->direction == PF_OUT &&
+				    PF_AEQ(&(*state)->src_node->addr,
+				    &s->lan.addr, s->af)) ||
+				    ((*state)->direction == PF_IN &&
+				    PF_AEQ(&(*state)->src_node->addr,
+				    &s->ext.addr, s->af))) &&
+				    ((*state)->rule.ptr->flush &
+				    PF_FLUSH_GLOBAL ||
+				    (*state)->rule.ptr == s->rule.ptr)) {
+					s->timeout = PFTM_PURGE;
+					s->src.state = s->dst.state =
+					    TCPS_CLOSED;
+					killed++;
+				}
+			}
+			if (pf_status.debug >= PF_DEBUG_MISC)
+				printf(", %u states killed", killed);
+		}
+		if (pf_status.debug >= PF_DEBUG_MISC)
+			printf("\n");
+	}
+
+	/* kill this state */
+	(*state)->timeout = PFTM_PURGE;
+	(*state)->src.state = (*state)->dst.state = TCPS_CLOSED;
+	return (1);
+}
+
+int
+pf_insert_src_node(struct pf_src_node **sn, struct pf_rule *rule,
+    struct pf_addr *src, sa_family_t af)
+{
+	struct pf_src_node	k;
+
+	if (*sn == NULL) {
+		k.af = af;
+		PF_ACPY(&k.addr, src, af);
+		if (rule->rule_flag & PFRULE_RULESRCTRACK ||
+		    rule->rpool.opts & PF_POOL_STICKYADDR)
+			k.rule.ptr = rule;
+		else
+			k.rule.ptr = NULL;
+		pf_status.scounters[SCNT_SRC_NODE_SEARCH]++;
+		*sn = RB_FIND(pf_src_tree, &tree_src_tracking, &k);
+	}
+	if (*sn == NULL) {
+		if (!rule->max_src_nodes ||
+		    rule->src_nodes < rule->max_src_nodes)
+			(*sn) = pool_get(&pf_src_tree_pl, PR_NOWAIT);
+		else
+			pf_status.lcounters[LCNT_SRCNODES]++;
+		if ((*sn) == NULL)
+			return (-1);
+		bzero(*sn, sizeof(struct pf_src_node));
+
+		pf_init_threshold(&(*sn)->conn_rate,
+		    rule->max_src_conn_rate.limit,
+		    rule->max_src_conn_rate.seconds);
+
+		(*sn)->af = af;
+		if (rule->rule_flag & PFRULE_RULESRCTRACK ||
+		    rule->rpool.opts & PF_POOL_STICKYADDR)
+			(*sn)->rule.ptr = rule;
+		else
+			(*sn)->rule.ptr = NULL;
+		PF_ACPY(&(*sn)->addr, src, af);
+		if (RB_INSERT(pf_src_tree,
+		    &tree_src_tracking, *sn) != NULL) {
+			if (pf_status.debug >= PF_DEBUG_MISC) {
+				printf("pf: src_tree insert failed: ");
+				pf_print_host(&(*sn)->addr, 0, af);
+				printf("\n");
+			}
+			pool_put(&pf_src_tree_pl, *sn);
+			return (-1);
+		}
+		(*sn)->creation = time_second;
+		(*sn)->ruletype = rule->action;
+		if ((*sn)->rule.ptr != NULL)
+			(*sn)->rule.ptr->src_nodes++;
+		pf_status.scounters[SCNT_SRC_NODE_INSERT]++;
+		pf_status.src_nodes++;
+	} else {
+		if (rule->max_src_states &&
+		    (*sn)->states >= rule->max_src_states) {
+			pf_status.lcounters[LCNT_SRCSTATES]++;
+			return (-1);
+		}
+	}
+	return (0);
+}
+
+int
+pf_insert_state(struct pfi_kif *kif, struct pf_state *state)
+{
+	/* Thou MUST NOT insert multiple duplicate keys */
+	state->u.s.kif = kif;
+	if (RB_INSERT(pf_state_tree_lan_ext, &kif->pfik_lan_ext, state)) {
+		if (pf_status.debug >= PF_DEBUG_MISC) {
+			printf("pf: state insert failed: tree_lan_ext");
+			printf(" lan: ");
+			pf_print_host(&state->lan.addr, state->lan.port,
+			    state->af);
+			printf(" gwy: ");
+			pf_print_host(&state->gwy.addr, state->gwy.port,
+			    state->af);
+			printf(" ext: ");
+			pf_print_host(&state->ext.addr, state->ext.port,
+			    state->af);
+			if (state->sync_flags & PFSTATE_FROMSYNC)
+				printf(" (from sync)");
+			printf("\n");
+		}
+		return (-1);
+	}
+
+	if (RB_INSERT(pf_state_tree_ext_gwy, &kif->pfik_ext_gwy, state)) {
+		if (pf_status.debug >= PF_DEBUG_MISC) {
+			printf("pf: state insert failed: tree_ext_gwy");
+			printf(" lan: ");
+			pf_print_host(&state->lan.addr, state->lan.port,
+			    state->af);
+			printf(" gwy: ");
+			pf_print_host(&state->gwy.addr, state->gwy.port,
+			    state->af);
+			printf(" ext: ");
+			pf_print_host(&state->ext.addr, state->ext.port,
+			    state->af);
+			if (state->sync_flags & PFSTATE_FROMSYNC)
+				printf(" (from sync)");
+			printf("\n");
+		}
+		RB_REMOVE(pf_state_tree_lan_ext, &kif->pfik_lan_ext, state);
+		return (-1);
+	}
+
+	if (state->id == 0 && state->creatorid == 0) {
+		state->id = htobe64(pf_status.stateid++);
+		state->creatorid = pf_status.hostid;
+	}
+	if (RB_INSERT(pf_state_tree_id, &tree_id, state) != NULL) {
+		if (pf_status.debug >= PF_DEBUG_MISC) {
+#ifdef __FreeBSD__
+			printf("pf: state insert failed: "
+			    "id: %016llx creatorid: %08x",
+			    (long long)be64toh(state->id),
+			    ntohl(state->creatorid));
+#else
+			printf("pf: state insert failed: "
+			    "id: %016llx creatorid: %08x",
+			    betoh64(state->id), ntohl(state->creatorid));
+#endif
+			if (state->sync_flags & PFSTATE_FROMSYNC)
+				printf(" (from sync)");
+			printf("\n");
+		}
+		RB_REMOVE(pf_state_tree_lan_ext, &kif->pfik_lan_ext, state);
+		RB_REMOVE(pf_state_tree_ext_gwy, &kif->pfik_ext_gwy, state);
+		return (-1);
+	}
+	TAILQ_INSERT_TAIL(&state_list, state, u.s.entry_list);
+	pf_status.fcounters[FCNT_STATE_INSERT]++;
+	pf_status.states++;
+	pfi_kif_ref(kif, PFI_KIF_REF_STATE);
+#if NPFSYNC
+	pfsync_insert_state(state);
+#endif
+	return (0);
+}
+
+void
+pf_purge_thread(void *v)
+{
+	int nloops = 0, s;
+#ifdef __FreeBSD__
+	int locked;
+#endif
+
+	for (;;) {
+		tsleep(pf_purge_thread, PWAIT, "pftm", 1 * hz);
+
+#ifdef __FreeBSD__
+		sx_slock(&pf_consistency_lock);
+		PF_LOCK();
+		locked = 0;
+
+		if (pf_end_threads) {
+			PF_UNLOCK();
+			sx_sunlock(&pf_consistency_lock);
+			sx_xlock(&pf_consistency_lock);
+			PF_LOCK();
+			pf_purge_expired_states(pf_status.states, 1);
+			pf_purge_expired_fragments();
+			pf_purge_expired_src_nodes(1);
+			pf_end_threads++;
+
+			sx_xunlock(&pf_consistency_lock);
+			PF_UNLOCK();
+			wakeup(pf_purge_thread);
+			kproc_exit(0);
+		}
+#endif
+		s = splsoftnet();
+
+		/* process a fraction of the state table every second */
+#ifdef __FreeBSD__
+		if(!pf_purge_expired_states(1 + (pf_status.states
+		    / pf_default_rule.timeout[PFTM_INTERVAL]), 0)) {
+			PF_UNLOCK();
+			sx_sunlock(&pf_consistency_lock);
+			sx_xlock(&pf_consistency_lock);
+			PF_LOCK();
+			locked = 1;
+
+			pf_purge_expired_states(1 + (pf_status.states
+			    / pf_default_rule.timeout[PFTM_INTERVAL]), 1);
+		}
+#else
+		pf_purge_expired_states(1 + (pf_status.states
+		    / pf_default_rule.timeout[PFTM_INTERVAL]));
+#endif
+
+		/* purge other expired types every PFTM_INTERVAL seconds */
+		if (++nloops >= pf_default_rule.timeout[PFTM_INTERVAL]) {
+			pf_purge_expired_fragments();
+			if (!pf_purge_expired_src_nodes(locked)) {
+				PF_UNLOCK();
+				sx_sunlock(&pf_consistency_lock);
+				sx_xlock(&pf_consistency_lock);
+				PF_LOCK();
+				locked = 1;
+				pf_purge_expired_src_nodes(1);
+			}
+			nloops = 0;
+		}
+
+		splx(s);
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+		if (locked)
+			sx_xunlock(&pf_consistency_lock);
+		else
+			sx_sunlock(&pf_consistency_lock);
+#endif
+	}
+}
+
+u_int32_t
+pf_state_expires(const struct pf_state *state)
+{
+	u_int32_t	timeout;
+	u_int32_t	start;
+	u_int32_t	end;
+	u_int32_t	states;
+
+	/* handle all PFTM_* > PFTM_MAX here */
+	if (state->timeout == PFTM_PURGE)
+		return (time_second);
+	if (state->timeout == PFTM_UNTIL_PACKET)
+		return (0);
+#ifdef __FreeBSD__	
+	KASSERT(state->timeout != PFTM_UNLINKED,
+	    ("pf_state_expires: timeout == PFTM_UNLINKED"));
+	KASSERT((state->timeout < PFTM_MAX), 
+	    ("pf_state_expires: timeout > PFTM_MAX"));
+#else
+	KASSERT(state->timeout != PFTM_UNLINKED);
+	KASSERT(state->timeout < PFTM_MAX);
+#endif
+	timeout = state->rule.ptr->timeout[state->timeout];
+	if (!timeout)
+		timeout = pf_default_rule.timeout[state->timeout];
+	start = state->rule.ptr->timeout[PFTM_ADAPTIVE_START];
+	if (start) {
+		end = state->rule.ptr->timeout[PFTM_ADAPTIVE_END];
+		states = state->rule.ptr->states;
+	} else {
+		start = pf_default_rule.timeout[PFTM_ADAPTIVE_START];
+		end = pf_default_rule.timeout[PFTM_ADAPTIVE_END];
+		states = pf_status.states;
+	}
+	if (end && states > start && start < end) {
+		if (states < end)
+			return (state->expire + timeout * (end - states) /
+			    (end - start));
+		else
+			return (time_second);
+	}
+	return (state->expire + timeout);
+}
+
+#ifdef __FreeBSD__
+int
+pf_purge_expired_src_nodes(int waslocked)
+#else
+void
+pf_purge_expired_src_nodes(int waslocked)
+#endif
+{
+	 struct pf_src_node		*cur, *next;
+	 int				 locked = waslocked;
+
+	 for (cur = RB_MIN(pf_src_tree, &tree_src_tracking); cur; cur = next) {
+		 next = RB_NEXT(pf_src_tree, &tree_src_tracking, cur);
+
+		 if (cur->states <= 0 && cur->expire <= time_second) {
+			 if (! locked) {
+#ifdef __FreeBSD__
+				 if (!sx_try_upgrade(&pf_consistency_lock))
+				 	return (0);
+#else
+				 rw_enter_write(&pf_consistency_lock);
+#endif
+			 	 next = RB_NEXT(pf_src_tree,
+				     &tree_src_tracking, cur);
+				 locked = 1;
+			 }
+			 if (cur->rule.ptr != NULL) {
+				 cur->rule.ptr->src_nodes--;
+				 if (cur->rule.ptr->states <= 0 &&
+				     cur->rule.ptr->max_src_nodes <= 0)
+					 pf_rm_rule(NULL, cur->rule.ptr);
+			 }
+			 RB_REMOVE(pf_src_tree, &tree_src_tracking, cur);
+			 pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+			 pf_status.src_nodes--;
+			 pool_put(&pf_src_tree_pl, cur);
+		 }
+	 }
+
+	 if (locked && !waslocked)
+#ifdef __FreeBSD__
+		sx_downgrade(&pf_consistency_lock);
+#else
+		rw_exit_write(&pf_consistency_lock);
+#endif
+
+#ifdef __FreeBSD__
+	return (1);
+#endif
+}
+
+void
+pf_src_tree_remove_state(struct pf_state *s)
+{
+	u_int32_t timeout;
+
+	if (s->src_node != NULL) {
+		if (s->proto == IPPROTO_TCP) {
+			if (s->src.tcp_est)
+				--s->src_node->conn;
+		}
+		if (--s->src_node->states <= 0) {
+			timeout = s->rule.ptr->timeout[PFTM_SRC_NODE];
+			if (!timeout)
+				timeout =
+				    pf_default_rule.timeout[PFTM_SRC_NODE];
+			s->src_node->expire = time_second + timeout;
+		}
+	}
+	if (s->nat_src_node != s->src_node && s->nat_src_node != NULL) {
+		if (--s->nat_src_node->states <= 0) {
+			timeout = s->rule.ptr->timeout[PFTM_SRC_NODE];
+			if (!timeout)
+				timeout =
+				    pf_default_rule.timeout[PFTM_SRC_NODE];
+			s->nat_src_node->expire = time_second + timeout;
+		}
+	}
+	s->src_node = s->nat_src_node = NULL;
+}
+
+/* callers should be at splsoftnet */
+void
+pf_unlink_state(struct pf_state *cur)
+{
+#ifdef __FreeBSD__
+	if (cur->local_flags & PFSTATE_EXPIRING)
+		return;
+	cur->local_flags |= PFSTATE_EXPIRING;
+#endif
+	if (cur->src.state == PF_TCPS_PROXY_DST) {
+#ifdef __FreeBSD__
+		pf_send_tcp(NULL, cur->rule.ptr, cur->af,
+#else
+		pf_send_tcp(cur->rule.ptr, cur->af,
+#endif
+		    &cur->ext.addr, &cur->lan.addr,
+		    cur->ext.port, cur->lan.port,
+		    cur->src.seqhi, cur->src.seqlo + 1,
+		    TH_RST|TH_ACK, 0, 0, 0, 1, cur->tag, NULL, NULL);
+	}
+	RB_REMOVE(pf_state_tree_ext_gwy,
+	    &cur->u.s.kif->pfik_ext_gwy, cur);
+	RB_REMOVE(pf_state_tree_lan_ext,
+	    &cur->u.s.kif->pfik_lan_ext, cur);
+	RB_REMOVE(pf_state_tree_id, &tree_id, cur);
+#if NPFSYNC
+	if (cur->creatorid == pf_status.hostid)
+		pfsync_delete_state(cur);
+#endif
+	cur->timeout = PFTM_UNLINKED;
+	pf_src_tree_remove_state(cur);
+}
+
+/* callers should be at splsoftnet and hold the
+ * write_lock on pf_consistency_lock */
+void
+pf_free_state(struct pf_state *cur)
+{
+#if NPFSYNC
+	if (pfsyncif != NULL &&
+	    (pfsyncif->sc_bulk_send_next == cur ||
+	    pfsyncif->sc_bulk_terminator == cur))
+		return;
+#endif
+#ifdef __FreeBSD__
+	KASSERT(cur->timeout == PFTM_UNLINKED,
+	    ("pf_free_state: cur->timeout != PFTM_UNLINKED"));
+#else
+	KASSERT(cur->timeout == PFTM_UNLINKED);
+#endif
+	if (--cur->rule.ptr->states <= 0 &&
+	    cur->rule.ptr->src_nodes <= 0)
+		pf_rm_rule(NULL, cur->rule.ptr);
+	if (cur->nat_rule.ptr != NULL)
+		if (--cur->nat_rule.ptr->states <= 0 &&
+			cur->nat_rule.ptr->src_nodes <= 0)
+			pf_rm_rule(NULL, cur->nat_rule.ptr);
+	if (cur->anchor.ptr != NULL)
+		if (--cur->anchor.ptr->states <= 0)
+			pf_rm_rule(NULL, cur->anchor.ptr);
+	pf_normalize_tcp_cleanup(cur);
+	pfi_kif_unref(cur->u.s.kif, PFI_KIF_REF_STATE);
+	TAILQ_REMOVE(&state_list, cur, u.s.entry_list);
+	if (cur->tag)
+		pf_tag_unref(cur->tag);
+	pool_put(&pf_state_pl, cur);
+	pf_status.fcounters[FCNT_STATE_REMOVALS]++;
+	pf_status.states--;
+}
+
+#ifdef __FreeBSD__
+int
+pf_purge_expired_states(u_int32_t maxcheck, int waslocked)
+#else
+void
+pf_purge_expired_states(u_int32_t maxcheck)
+#endif
+{
+	static struct pf_state	*cur = NULL;
+	struct pf_state		*next;
+#ifdef __FreeBSD__
+	int 			 locked = waslocked;
+#else
+	int 			 locked = 0;
+#endif
+
+	while (maxcheck--) {
+		/* wrap to start of list when we hit the end */
+		if (cur == NULL) {
+			cur = TAILQ_FIRST(&state_list);
+			if (cur == NULL)
+				break;	/* list empty */
+		}
+
+		/* get next state, as cur may get deleted */
+		next = TAILQ_NEXT(cur, u.s.entry_list);
+
+		if (cur->timeout == PFTM_UNLINKED) {
+			/* free unlinked state */
+			if (! locked) {
+#ifdef __FreeBSD__
+				 if (!sx_try_upgrade(&pf_consistency_lock))
+				 	return (0);
+#else
+				rw_enter_write(&pf_consistency_lock);
+#endif
+				locked = 1;
+			}
+			pf_free_state(cur);
+		} else if (pf_state_expires(cur) <= time_second) {
+			/* unlink and free expired state */
+			pf_unlink_state(cur);
+			if (! locked) {
+#ifdef __FreeBSD__
+				 if (!sx_try_upgrade(&pf_consistency_lock))
+				 	return (0);
+#else
+				rw_enter_write(&pf_consistency_lock);
+#endif
+				locked = 1;
+			}
+			pf_free_state(cur);
+		}
+		cur = next;
+	}
+
+#ifdef __FreeBSD__
+	if (!waslocked && locked)
+		sx_downgrade(&pf_consistency_lock);
+
+	return (1);
+#else
+	if (locked)
+		rw_exit_write(&pf_consistency_lock);
+#endif
+}
+
+int
+pf_tbladdr_setup(struct pf_ruleset *rs, struct pf_addr_wrap *aw)
+{
+	if (aw->type != PF_ADDR_TABLE)
+		return (0);
+	if ((aw->p.tbl = pfr_attach_table(rs, aw->v.tblname)) == NULL)
+		return (1);
+	return (0);
+}
+
+void
+pf_tbladdr_remove(struct pf_addr_wrap *aw)
+{
+	if (aw->type != PF_ADDR_TABLE || aw->p.tbl == NULL)
+		return;
+	pfr_detach_table(aw->p.tbl);
+	aw->p.tbl = NULL;
+}
+
+void
+pf_tbladdr_copyout(struct pf_addr_wrap *aw)
+{
+	struct pfr_ktable *kt = aw->p.tbl;
+
+	if (aw->type != PF_ADDR_TABLE || kt == NULL)
+		return;
+	if (!(kt->pfrkt_flags & PFR_TFLAG_ACTIVE) && kt->pfrkt_root != NULL)
+		kt = kt->pfrkt_root;
+	aw->p.tbl = NULL;
+	aw->p.tblcnt = (kt->pfrkt_flags & PFR_TFLAG_ACTIVE) ?
+		kt->pfrkt_cnt : -1;
+}
+
+void
+pf_print_host(struct pf_addr *addr, u_int16_t p, sa_family_t af)
+{
+	switch (af) {
+#ifdef INET
+	case AF_INET: {
+		u_int32_t a = ntohl(addr->addr32[0]);
+		printf("%u.%u.%u.%u", (a>>24)&255, (a>>16)&255,
+		    (a>>8)&255, a&255);
+		if (p) {
+			p = ntohs(p);
+			printf(":%u", p);
+		}
+		break;
+	}
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6: {
+		u_int16_t b;
+		u_int8_t i, curstart = 255, curend = 0,
+		    maxstart = 0, maxend = 0;
+		for (i = 0; i < 8; i++) {
+			if (!addr->addr16[i]) {
+				if (curstart == 255)
+					curstart = i;
+				else
+					curend = i;
+			} else {
+				if (curstart) {
+					if ((curend - curstart) >
+					    (maxend - maxstart)) {
+						maxstart = curstart;
+						maxend = curend;
+						curstart = 255;
+					}
+				}
+			}
+		}
+		for (i = 0; i < 8; i++) {
+			if (i >= maxstart && i <= maxend) {
+				if (maxend != 7) {
+					if (i == maxstart)
+						printf(":");
+				} else {
+					if (i == maxend)
+						printf(":");
+				}
+			} else {
+				b = ntohs(addr->addr16[i]);
+				printf("%x", b);
+				if (i < 7)
+					printf(":");
+			}
+		}
+		if (p) {
+			p = ntohs(p);
+			printf("[%u]", p);
+		}
+		break;
+	}
+#endif /* INET6 */
+	}
+}
+
+void
+pf_print_state(struct pf_state *s)
+{
+	switch (s->proto) {
+	case IPPROTO_TCP:
+		printf("TCP ");
+		break;
+	case IPPROTO_UDP:
+		printf("UDP ");
+		break;
+	case IPPROTO_ICMP:
+		printf("ICMP ");
+		break;
+	case IPPROTO_ICMPV6:
+		printf("ICMPV6 ");
+		break;
+	default:
+		printf("%u ", s->proto);
+		break;
+	}
+	pf_print_host(&s->lan.addr, s->lan.port, s->af);
+	printf(" ");
+	pf_print_host(&s->gwy.addr, s->gwy.port, s->af);
+	printf(" ");
+	pf_print_host(&s->ext.addr, s->ext.port, s->af);
+	printf(" [lo=%u high=%u win=%u modulator=%u", s->src.seqlo,
+	    s->src.seqhi, s->src.max_win, s->src.seqdiff);
+	if (s->src.wscale && s->dst.wscale)
+		printf(" wscale=%u", s->src.wscale & PF_WSCALE_MASK);
+	printf("]");
+	printf(" [lo=%u high=%u win=%u modulator=%u", s->dst.seqlo,
+	    s->dst.seqhi, s->dst.max_win, s->dst.seqdiff);
+	if (s->src.wscale && s->dst.wscale)
+		printf(" wscale=%u", s->dst.wscale & PF_WSCALE_MASK);
+	printf("]");
+	printf(" %u:%u", s->src.state, s->dst.state);
+}
+
+void
+pf_print_flags(u_int8_t f)
+{
+	if (f)
+		printf(" ");
+	if (f & TH_FIN)
+		printf("F");
+	if (f & TH_SYN)
+		printf("S");
+	if (f & TH_RST)
+		printf("R");
+	if (f & TH_PUSH)
+		printf("P");
+	if (f & TH_ACK)
+		printf("A");
+	if (f & TH_URG)
+		printf("U");
+	if (f & TH_ECE)
+		printf("E");
+	if (f & TH_CWR)
+		printf("W");
+}
+
+#define	PF_SET_SKIP_STEPS(i)					\
+	do {							\
+		while (head[i] != cur) {			\
+			head[i]->skip[i].ptr = cur;		\
+			head[i] = TAILQ_NEXT(head[i], entries);	\
+		}						\
+	} while (0)
+
+void
+pf_calc_skip_steps(struct pf_rulequeue *rules)
+{
+	struct pf_rule *cur, *prev, *head[PF_SKIP_COUNT];
+	int i;
+
+	cur = TAILQ_FIRST(rules);
+	prev = cur;
+	for (i = 0; i < PF_SKIP_COUNT; ++i)
+		head[i] = cur;
+	while (cur != NULL) {
+
+		if (cur->kif != prev->kif || cur->ifnot != prev->ifnot)
+			PF_SET_SKIP_STEPS(PF_SKIP_IFP);
+		if (cur->direction != prev->direction)
+			PF_SET_SKIP_STEPS(PF_SKIP_DIR);
+		if (cur->af != prev->af)
+			PF_SET_SKIP_STEPS(PF_SKIP_AF);
+		if (cur->proto != prev->proto)
+			PF_SET_SKIP_STEPS(PF_SKIP_PROTO);
+		if (cur->src.neg != prev->src.neg ||
+		    pf_addr_wrap_neq(&cur->src.addr, &prev->src.addr))
+			PF_SET_SKIP_STEPS(PF_SKIP_SRC_ADDR);
+		if (cur->src.port[0] != prev->src.port[0] ||
+		    cur->src.port[1] != prev->src.port[1] ||
+		    cur->src.port_op != prev->src.port_op)
+			PF_SET_SKIP_STEPS(PF_SKIP_SRC_PORT);
+		if (cur->dst.neg != prev->dst.neg ||
+		    pf_addr_wrap_neq(&cur->dst.addr, &prev->dst.addr))
+			PF_SET_SKIP_STEPS(PF_SKIP_DST_ADDR);
+		if (cur->dst.port[0] != prev->dst.port[0] ||
+		    cur->dst.port[1] != prev->dst.port[1] ||
+		    cur->dst.port_op != prev->dst.port_op)
+			PF_SET_SKIP_STEPS(PF_SKIP_DST_PORT);
+
+		prev = cur;
+		cur = TAILQ_NEXT(cur, entries);
+	}
+	for (i = 0; i < PF_SKIP_COUNT; ++i)
+		PF_SET_SKIP_STEPS(i);
+}
+
+int
+pf_addr_wrap_neq(struct pf_addr_wrap *aw1, struct pf_addr_wrap *aw2)
+{
+	if (aw1->type != aw2->type)
+		return (1);
+	switch (aw1->type) {
+	case PF_ADDR_ADDRMASK:
+		if (PF_ANEQ(&aw1->v.a.addr, &aw2->v.a.addr, 0))
+			return (1);
+		if (PF_ANEQ(&aw1->v.a.mask, &aw2->v.a.mask, 0))
+			return (1);
+		return (0);
+	case PF_ADDR_DYNIFTL:
+		return (aw1->p.dyn->pfid_kt != aw2->p.dyn->pfid_kt);
+	case PF_ADDR_NOROUTE:
+	case PF_ADDR_URPFFAILED:
+		return (0);
+	case PF_ADDR_TABLE:
+		return (aw1->p.tbl != aw2->p.tbl);
+	case PF_ADDR_RTLABEL:
+		return (aw1->v.rtlabel != aw2->v.rtlabel);
+	default:
+		printf("invalid address type: %d\n", aw1->type);
+		return (1);
+	}
+}
+
+u_int16_t
+pf_cksum_fixup(u_int16_t cksum, u_int16_t old, u_int16_t new, u_int8_t udp)
+{
+	u_int32_t	l;
+
+	if (udp && !cksum)
+		return (0x0000);
+	l = cksum + old - new;
+	l = (l >> 16) + (l & 65535);
+	l = l & 65535;
+	if (udp && !l)
+		return (0xFFFF);
+	return (l);
+}
+
+void
+pf_change_ap(struct pf_addr *a, u_int16_t *p, u_int16_t *ic, u_int16_t *pc,
+    struct pf_addr *an, u_int16_t pn, u_int8_t u, sa_family_t af)
+{
+	struct pf_addr	ao;
+	u_int16_t	po = *p;
+
+	PF_ACPY(&ao, a, af);
+	PF_ACPY(a, an, af);
+
+	*p = pn;
+
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		*ic = pf_cksum_fixup(pf_cksum_fixup(*ic,
+		    ao.addr16[0], an->addr16[0], 0),
+		    ao.addr16[1], an->addr16[1], 0);
+		*p = pn;
+		*pc = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(*pc,
+		    ao.addr16[0], an->addr16[0], u),
+		    ao.addr16[1], an->addr16[1], u),
+		    po, pn, u);
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		*pc = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+		    pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+		    pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(*pc,
+		    ao.addr16[0], an->addr16[0], u),
+		    ao.addr16[1], an->addr16[1], u),
+		    ao.addr16[2], an->addr16[2], u),
+		    ao.addr16[3], an->addr16[3], u),
+		    ao.addr16[4], an->addr16[4], u),
+		    ao.addr16[5], an->addr16[5], u),
+		    ao.addr16[6], an->addr16[6], u),
+		    ao.addr16[7], an->addr16[7], u),
+		    po, pn, u);
+		break;
+#endif /* INET6 */
+	}
+}
+
+
+/* Changes a u_int32_t.  Uses a void * so there are no align restrictions */
+void
+pf_change_a(void *a, u_int16_t *c, u_int32_t an, u_int8_t u)
+{
+	u_int32_t	ao;
+
+	memcpy(&ao, a, sizeof(ao));
+	memcpy(a, &an, sizeof(u_int32_t));
+	*c = pf_cksum_fixup(pf_cksum_fixup(*c, ao / 65536, an / 65536, u),
+	    ao % 65536, an % 65536, u);
+}
+
+#ifdef INET6
+void
+pf_change_a6(struct pf_addr *a, u_int16_t *c, struct pf_addr *an, u_int8_t u)
+{
+	struct pf_addr	ao;
+
+	PF_ACPY(&ao, a, AF_INET6);
+	PF_ACPY(a, an, AF_INET6);
+
+	*c = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+	    pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+	    pf_cksum_fixup(pf_cksum_fixup(*c,
+	    ao.addr16[0], an->addr16[0], u),
+	    ao.addr16[1], an->addr16[1], u),
+	    ao.addr16[2], an->addr16[2], u),
+	    ao.addr16[3], an->addr16[3], u),
+	    ao.addr16[4], an->addr16[4], u),
+	    ao.addr16[5], an->addr16[5], u),
+	    ao.addr16[6], an->addr16[6], u),
+	    ao.addr16[7], an->addr16[7], u);
+}
+#endif /* INET6 */
+
+void
+pf_change_icmp(struct pf_addr *ia, u_int16_t *ip, struct pf_addr *oa,
+    struct pf_addr *na, u_int16_t np, u_int16_t *pc, u_int16_t *h2c,
+    u_int16_t *ic, u_int16_t *hc, u_int8_t u, sa_family_t af)
+{
+	struct pf_addr	oia, ooa;
+
+	PF_ACPY(&oia, ia, af);
+	PF_ACPY(&ooa, oa, af);
+
+	/* Change inner protocol port, fix inner protocol checksum. */
+	if (ip != NULL) {
+		u_int16_t	oip = *ip;
+		u_int32_t	opc = 0;	/* make the compiler happy */
+
+		if (pc != NULL)
+			opc = *pc;
+		*ip = np;
+		if (pc != NULL)
+			*pc = pf_cksum_fixup(*pc, oip, *ip, u);
+		*ic = pf_cksum_fixup(*ic, oip, *ip, 0);
+		if (pc != NULL)
+			*ic = pf_cksum_fixup(*ic, opc, *pc, 0);
+	}
+	/* Change inner ip address, fix inner ip and icmp checksums. */
+	PF_ACPY(ia, na, af);
+	switch (af) {
+#ifdef INET
+	case AF_INET: {
+		u_int32_t	 oh2c = *h2c;
+
+		*h2c = pf_cksum_fixup(pf_cksum_fixup(*h2c,
+		    oia.addr16[0], ia->addr16[0], 0),
+		    oia.addr16[1], ia->addr16[1], 0);
+		*ic = pf_cksum_fixup(pf_cksum_fixup(*ic,
+		    oia.addr16[0], ia->addr16[0], 0),
+		    oia.addr16[1], ia->addr16[1], 0);
+		*ic = pf_cksum_fixup(*ic, oh2c, *h2c, 0);
+		break;
+	}
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		*ic = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+		    pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+		    pf_cksum_fixup(pf_cksum_fixup(*ic,
+		    oia.addr16[0], ia->addr16[0], u),
+		    oia.addr16[1], ia->addr16[1], u),
+		    oia.addr16[2], ia->addr16[2], u),
+		    oia.addr16[3], ia->addr16[3], u),
+		    oia.addr16[4], ia->addr16[4], u),
+		    oia.addr16[5], ia->addr16[5], u),
+		    oia.addr16[6], ia->addr16[6], u),
+		    oia.addr16[7], ia->addr16[7], u);
+		break;
+#endif /* INET6 */
+	}
+	/* Change outer ip address, fix outer ip or icmpv6 checksum. */
+	PF_ACPY(oa, na, af);
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		*hc = pf_cksum_fixup(pf_cksum_fixup(*hc,
+		    ooa.addr16[0], oa->addr16[0], 0),
+		    ooa.addr16[1], oa->addr16[1], 0);
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		*ic = pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+		    pf_cksum_fixup(pf_cksum_fixup(pf_cksum_fixup(
+		    pf_cksum_fixup(pf_cksum_fixup(*ic,
+		    ooa.addr16[0], oa->addr16[0], u),
+		    ooa.addr16[1], oa->addr16[1], u),
+		    ooa.addr16[2], oa->addr16[2], u),
+		    ooa.addr16[3], oa->addr16[3], u),
+		    ooa.addr16[4], oa->addr16[4], u),
+		    ooa.addr16[5], oa->addr16[5], u),
+		    ooa.addr16[6], oa->addr16[6], u),
+		    ooa.addr16[7], oa->addr16[7], u);
+		break;
+#endif /* INET6 */
+	}
+}
+
+
+/*
+ * Need to modulate the sequence numbers in the TCP SACK option
+ * (credits to Krzysztof Pfaff for report and patch)
+ */
+int
+pf_modulate_sack(struct mbuf *m, int off, struct pf_pdesc *pd,
+    struct tcphdr *th, struct pf_state_peer *dst)
+{
+	int hlen = (th->th_off << 2) - sizeof(*th), thoptlen = hlen;
+#ifdef __FreeBSD__
+	u_int8_t opts[TCP_MAXOLEN], *opt = opts;
+#else
+	u_int8_t opts[MAX_TCPOPTLEN], *opt = opts;
+#endif
+	int copyback = 0, i, olen;
+	struct sackblk sack;
+
+#define TCPOLEN_SACKLEN	(TCPOLEN_SACK + 2)
+	if (hlen < TCPOLEN_SACKLEN ||
+	    !pf_pull_hdr(m, off + sizeof(*th), opts, hlen, NULL, NULL, pd->af))
+		return 0;
+
+	while (hlen >= TCPOLEN_SACKLEN) {
+		olen = opt[1];
+		switch (*opt) {
+		case TCPOPT_EOL:	/* FALLTHROUGH */
+		case TCPOPT_NOP:
+			opt++;
+			hlen--;
+			break;
+		case TCPOPT_SACK:
+			if (olen > hlen)
+				olen = hlen;
+			if (olen >= TCPOLEN_SACKLEN) {
+				for (i = 2; i + TCPOLEN_SACK <= olen;
+				    i += TCPOLEN_SACK) {
+					memcpy(&sack, &opt[i], sizeof(sack));
+					pf_change_a(&sack.start, &th->th_sum,
+					    htonl(ntohl(sack.start) -
+					    dst->seqdiff), 0);
+					pf_change_a(&sack.end, &th->th_sum,
+					    htonl(ntohl(sack.end) -
+					    dst->seqdiff), 0);
+					memcpy(&opt[i], &sack, sizeof(sack));
+				}
+				copyback = 1;
+			}
+			/* FALLTHROUGH */
+		default:
+			if (olen < 2)
+				olen = 2;
+			hlen -= olen;
+			opt += olen;
+		}
+	}
+
+	if (copyback)
+#ifdef __FreeBSD__
+		m_copyback(m, off + sizeof(*th), thoptlen, (caddr_t)opts);
+#else
+		m_copyback(m, off + sizeof(*th), thoptlen, opts);
+#endif
+	return (copyback);
+}
+
+void
+#ifdef __FreeBSD__
+pf_send_tcp(struct mbuf *replyto, const struct pf_rule *r, sa_family_t af,
+#else
+pf_send_tcp(const struct pf_rule *r, sa_family_t af,
+#endif
+    const struct pf_addr *saddr, const struct pf_addr *daddr,
+    u_int16_t sport, u_int16_t dport, u_int32_t seq, u_int32_t ack,
+    u_int8_t flags, u_int16_t win, u_int16_t mss, u_int8_t ttl, int tag,
+    u_int16_t rtag, struct ether_header *eh, struct ifnet *ifp)
+{
+	struct mbuf	*m;
+	int		 len, tlen;
+#ifdef INET
+	struct ip	*h;
+#endif /* INET */
+#ifdef INET6
+	struct ip6_hdr	*h6;
+#endif /* INET6 */
+	struct tcphdr	*th;
+	char		*opt;
+	struct pf_mtag	*pf_mtag;
+
+#ifdef __FreeBSD__
+	KASSERT(
+#ifdef INET
+	    af == AF_INET
+#else
+	    0
+#endif
+	    ||
+#ifdef INET6
+	    af == AF_INET6
+#else
+	    0
+#endif
+	    , ("Unsupported AF %d", af));
+	len = 0;
+	th = NULL;
+#ifdef INET
+	h = NULL;
+#endif
+#ifdef INET6
+	h6 = NULL;
+#endif
+#endif
+
+	/* maximum segment size tcp option */
+	tlen = sizeof(struct tcphdr);
+	if (mss)
+		tlen += 4;
+
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		len = sizeof(struct ip) + tlen;
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		len = sizeof(struct ip6_hdr) + tlen;
+		break;
+#endif /* INET6 */
+	}
+
+	/* create outgoing mbuf */
+	m = m_gethdr(M_DONTWAIT, MT_HEADER);
+	if (m == NULL)
+		return;
+#ifdef __FreeBSD__
+#ifdef MAC
+	if (replyto)
+		mac_netinet_firewall_reply(replyto, m);
+	else
+		mac_netinet_firewall_send(m);
+#else
+	(void)replyto;
+#endif
+#endif
+	if ((pf_mtag = pf_get_mtag(m)) == NULL) {
+		m_freem(m);
+		return;
+	}
+	if (tag)
+#ifdef __FreeBSD__
+		m->m_flags |= M_SKIP_FIREWALL;
+#else
+		pf_mtag->flags |= PF_TAG_GENERATED;
+#endif
+
+	pf_mtag->tag = rtag;
+
+	if (r != NULL && r->rtableid >= 0)
+#ifdef __FreeBSD__
+	{
+		M_SETFIB(m, r->rtableid);
+#endif
+		pf_mtag->rtableid = r->rtableid;
+#ifdef __FreeBSD__
+	}
+#endif
+#ifdef ALTQ
+	if (r != NULL && r->qid) {
+		pf_mtag->qid = r->qid;
+		/* add hints for ecn */
+		pf_mtag->af = af;
+		pf_mtag->hdr = mtod(m, struct ip *);
+	}
+#endif /* ALTQ */
+	m->m_data += max_linkhdr;
+	m->m_pkthdr.len = m->m_len = len;
+	m->m_pkthdr.rcvif = NULL;
+	bzero(m->m_data, len);
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		h = mtod(m, struct ip *);
+
+		/* IP header fields included in the TCP checksum */
+		h->ip_p = IPPROTO_TCP;
+		h->ip_len = htons(tlen);
+		h->ip_src.s_addr = saddr->v4.s_addr;
+		h->ip_dst.s_addr = daddr->v4.s_addr;
+
+		th = (struct tcphdr *)((caddr_t)h + sizeof(struct ip));
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		h6 = mtod(m, struct ip6_hdr *);
+
+		/* IP header fields included in the TCP checksum */
+		h6->ip6_nxt = IPPROTO_TCP;
+		h6->ip6_plen = htons(tlen);
+		memcpy(&h6->ip6_src, &saddr->v6, sizeof(struct in6_addr));
+		memcpy(&h6->ip6_dst, &daddr->v6, sizeof(struct in6_addr));
+
+		th = (struct tcphdr *)((caddr_t)h6 + sizeof(struct ip6_hdr));
+		break;
+#endif /* INET6 */
+	}
+
+	/* TCP header */
+	th->th_sport = sport;
+	th->th_dport = dport;
+	th->th_seq = htonl(seq);
+	th->th_ack = htonl(ack);
+	th->th_off = tlen >> 2;
+	th->th_flags = flags;
+	th->th_win = htons(win);
+
+	if (mss) {
+		opt = (char *)(th + 1);
+		opt[0] = TCPOPT_MAXSEG;
+		opt[1] = 4;
+		HTONS(mss);
+		bcopy((caddr_t)&mss, (caddr_t)(opt + 2), 2);
+	}
+
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		/* TCP checksum */
+		th->th_sum = in_cksum(m, len);
+
+		/* Finish the IP header */
+		h->ip_v = 4;
+		h->ip_hl = sizeof(*h) >> 2;
+		h->ip_tos = IPTOS_LOWDELAY;
+#ifdef __FreeBSD__
+		h->ip_off = V_path_mtu_discovery ? IP_DF : 0;
+		h->ip_len = len;
+#else
+		h->ip_off = htons(ip_mtudisc ? IP_DF : 0);
+		h->ip_len = htons(len);
+#endif
+		h->ip_ttl = ttl ? ttl : V_ip_defttl;
+		h->ip_sum = 0;
+		if (eh == NULL) {
+#ifdef __FreeBSD__
+			PF_UNLOCK();
+			ip_output(m, (void *)NULL, (void *)NULL, 0,
+			    (void *)NULL, (void *)NULL);
+			PF_LOCK();
+#else /* ! __FreeBSD__ */
+			ip_output(m, (void *)NULL, (void *)NULL, 0,
+			    (void *)NULL, (void *)NULL);
+#endif
+		} else {
+			struct route		 ro;
+			struct rtentry		 rt;
+			struct ether_header	*e = (void *)ro.ro_dst.sa_data;
+
+			if (ifp == NULL) {
+				m_freem(m);
+				return;
+			}
+			rt.rt_ifp = ifp;
+			ro.ro_rt = &rt;
+			ro.ro_dst.sa_len = sizeof(ro.ro_dst);
+			ro.ro_dst.sa_family = pseudo_AF_HDRCMPLT;
+			bcopy(eh->ether_dhost, e->ether_shost, ETHER_ADDR_LEN);
+			bcopy(eh->ether_shost, e->ether_dhost, ETHER_ADDR_LEN);
+			e->ether_type = eh->ether_type;
+#ifdef __FreeBSD__
+			PF_UNLOCK();
+			/* XXX_IMPORT: later */
+			ip_output(m, (void *)NULL, &ro, 0,
+			    (void *)NULL, (void *)NULL);
+			PF_LOCK();
+#else /* ! __FreeBSD__ */
+			ip_output(m, (void *)NULL, &ro, IP_ROUTETOETHER,
+			    (void *)NULL, (void *)NULL);
+#endif
+		}
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		/* TCP checksum */
+		th->th_sum = in6_cksum(m, IPPROTO_TCP,
+		    sizeof(struct ip6_hdr), tlen);
+
+		h6->ip6_vfc |= IPV6_VERSION;
+		h6->ip6_hlim = IPV6_DEFHLIM;
+
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+		ip6_output(m, NULL, NULL, 0, NULL, NULL, NULL);
+		PF_LOCK();
+#else
+		ip6_output(m, NULL, NULL, 0, NULL, NULL);
+#endif
+		break;
+#endif /* INET6 */
+	}
+}
+
+void
+pf_send_icmp(struct mbuf *m, u_int8_t type, u_int8_t code, sa_family_t af,
+    struct pf_rule *r)
+{
+	struct pf_mtag	*pf_mtag;
+	struct mbuf	*m0;
+#ifdef __FreeBSD__
+	struct ip *ip;
+#endif
+
+#ifdef __FreeBSD__
+	m0 = m_copypacket(m, M_DONTWAIT);
+	if (m0 == NULL)
+		return;
+#else
+	m0 = m_copy(m, 0, M_COPYALL);
+#endif
+	if ((pf_mtag = pf_get_mtag(m0)) == NULL)
+		return;
+#ifdef __FreeBSD__
+	/* XXX: revisit */
+	m0->m_flags |= M_SKIP_FIREWALL;
+#else
+	pf_mtag->flags |= PF_TAG_GENERATED;
+#endif
+
+	if (r->rtableid >= 0)
+#ifdef __FreeBSD__
+	{
+		M_SETFIB(m0, r->rtableid);
+#endif
+		pf_mtag->rtableid = r->rtableid;
+#ifdef __FreeBSD__
+	}
+#endif
+
+#ifdef ALTQ
+	if (r->qid) {
+		pf_mtag->qid = r->qid;
+		/* add hints for ecn */
+		pf_mtag->af = af;
+		pf_mtag->hdr = mtod(m0, struct ip *);
+	}
+#endif /* ALTQ */
+
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+#ifdef __FreeBSD__
+		/* icmp_error() expects host byte ordering */
+		ip = mtod(m0, struct ip *);
+		NTOHS(ip->ip_len);
+		NTOHS(ip->ip_off);
+		PF_UNLOCK();
+		icmp_error(m0, type, code, 0, 0);
+		PF_LOCK();
+#else
+		icmp_error(m0, type, code, 0, 0);
+#endif
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+#endif
+		icmp6_error(m0, type, code, 0);
+#ifdef __FreeBSD__
+		PF_LOCK();
+#endif
+		break;
+#endif /* INET6 */
+	}
+}
+
+/*
+ * Return 1 if the addresses a and b match (with mask m), otherwise return 0.
+ * If n is 0, they match if they are equal. If n is != 0, they match if they
+ * are different.
+ */
+int
+pf_match_addr(u_int8_t n, struct pf_addr *a, struct pf_addr *m,
+    struct pf_addr *b, sa_family_t af)
+{
+	int	match = 0;
+
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		if ((a->addr32[0] & m->addr32[0]) ==
+		    (b->addr32[0] & m->addr32[0]))
+			match++;
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		if (((a->addr32[0] & m->addr32[0]) ==
+		     (b->addr32[0] & m->addr32[0])) &&
+		    ((a->addr32[1] & m->addr32[1]) ==
+		     (b->addr32[1] & m->addr32[1])) &&
+		    ((a->addr32[2] & m->addr32[2]) ==
+		     (b->addr32[2] & m->addr32[2])) &&
+		    ((a->addr32[3] & m->addr32[3]) ==
+		     (b->addr32[3] & m->addr32[3])))
+			match++;
+		break;
+#endif /* INET6 */
+	}
+	if (match) {
+		if (n)
+			return (0);
+		else
+			return (1);
+	} else {
+		if (n)
+			return (1);
+		else
+			return (0);
+	}
+}
+
+int
+pf_match(u_int8_t op, u_int32_t a1, u_int32_t a2, u_int32_t p)
+{
+	switch (op) {
+	case PF_OP_IRG:
+		return ((p > a1) && (p < a2));
+	case PF_OP_XRG:
+		return ((p < a1) || (p > a2));
+	case PF_OP_RRG:
+		return ((p >= a1) && (p <= a2));
+	case PF_OP_EQ:
+		return (p == a1);
+	case PF_OP_NE:
+		return (p != a1);
+	case PF_OP_LT:
+		return (p < a1);
+	case PF_OP_LE:
+		return (p <= a1);
+	case PF_OP_GT:
+		return (p > a1);
+	case PF_OP_GE:
+		return (p >= a1);
+	}
+	return (0); /* never reached */
+}
+
+int
+pf_match_port(u_int8_t op, u_int16_t a1, u_int16_t a2, u_int16_t p)
+{
+	NTOHS(a1);
+	NTOHS(a2);
+	NTOHS(p);
+	return (pf_match(op, a1, a2, p));
+}
+
+int
+pf_match_uid(u_int8_t op, uid_t a1, uid_t a2, uid_t u)
+{
+	if (u == UID_MAX && op != PF_OP_EQ && op != PF_OP_NE)
+		return (0);
+	return (pf_match(op, a1, a2, u));
+}
+
+int
+pf_match_gid(u_int8_t op, gid_t a1, gid_t a2, gid_t g)
+{
+	if (g == GID_MAX && op != PF_OP_EQ && op != PF_OP_NE)
+		return (0);
+	return (pf_match(op, a1, a2, g));
+}
+
+#ifndef __FreeBSD__
+struct pf_mtag *
+pf_find_mtag(struct mbuf *m)
+{
+	struct m_tag	*mtag;
+
+	if ((mtag = m_tag_find(m, PACKET_TAG_PF, NULL)) == NULL)
+		return (NULL);
+
+	return ((struct pf_mtag *)(mtag + 1));
+}
+
+struct pf_mtag *
+pf_get_mtag(struct mbuf *m)
+{
+	struct m_tag	*mtag;
+
+	if ((mtag = m_tag_find(m, PACKET_TAG_PF, NULL)) == NULL) {
+		mtag = m_tag_get(PACKET_TAG_PF, sizeof(struct pf_mtag),
+		    M_NOWAIT);
+		if (mtag == NULL)
+			return (NULL);
+		bzero(mtag + 1, sizeof(struct pf_mtag));
+		m_tag_prepend(m, mtag);
+	}
+
+	return ((struct pf_mtag *)(mtag + 1));
+}
+#endif
+
+int
+pf_match_tag(struct mbuf *m, struct pf_rule *r, struct pf_mtag *pf_mtag,
+    int *tag)
+{
+	if (*tag == -1)
+		*tag = pf_mtag->tag;
+
+	return ((!r->match_tag_not && r->match_tag == *tag) ||
+	    (r->match_tag_not && r->match_tag != *tag));
+}
+
+int
+pf_tag_packet(struct mbuf *m, struct pf_mtag *pf_mtag, int tag, int rtableid)
+{
+	if (tag <= 0 && rtableid < 0)
+		return (0);
+
+	if (pf_mtag == NULL)
+		if ((pf_mtag = pf_get_mtag(m)) == NULL)
+			return (1);
+	if (tag > 0)
+		pf_mtag->tag = tag;
+	if (rtableid >= 0)
+#ifdef __FreeBSD__
+	{
+		M_SETFIB(m, rtableid);
+#endif
+		pf_mtag->rtableid = rtableid;
+#ifdef __FreeBSD__
+	}
+#endif
+
+	return (0);
+}
+
+static void
+pf_step_into_anchor(int *depth, struct pf_ruleset **rs, int n,
+    struct pf_rule **r, struct pf_rule **a,  int *match)
+{
+	struct pf_anchor_stackframe	*f;
+
+	(*r)->anchor->match = 0;
+	if (match)
+		*match = 0;
+	if (*depth >= sizeof(pf_anchor_stack) /
+	    sizeof(pf_anchor_stack[0])) {
+		printf("pf_step_into_anchor: stack overflow\n");
+		*r = TAILQ_NEXT(*r, entries);
+		return;
+	} else if (*depth == 0 && a != NULL)
+		*a = *r;
+	f = pf_anchor_stack + (*depth)++;
+	f->rs = *rs;
+	f->r = *r;
+	if ((*r)->anchor_wildcard) {
+		f->parent = &(*r)->anchor->children;
+		if ((f->child = RB_MIN(pf_anchor_node, f->parent)) ==
+		    NULL) {
+			*r = NULL;
+			return;
+		}
+		*rs = &f->child->ruleset;
+	} else {
+		f->parent = NULL;
+		f->child = NULL;
+		*rs = &(*r)->anchor->ruleset;
+	}
+	*r = TAILQ_FIRST((*rs)->rules[n].active.ptr);
+}
+
+int
+pf_step_out_of_anchor(int *depth, struct pf_ruleset **rs, int n,
+    struct pf_rule **r, struct pf_rule **a, int *match)
+{
+	struct pf_anchor_stackframe	*f;
+	int quick = 0;
+
+	do {
+		if (*depth <= 0)
+			break;
+		f = pf_anchor_stack + *depth - 1;
+		if (f->parent != NULL && f->child != NULL) {
+			if (f->child->match ||
+			    (match != NULL && *match)) {
+				f->r->anchor->match = 1;
+				*match = 0;
+			}
+			f->child = RB_NEXT(pf_anchor_node, f->parent, f->child);
+			if (f->child != NULL) {
+				*rs = &f->child->ruleset;
+				*r = TAILQ_FIRST((*rs)->rules[n].active.ptr);
+				if (*r == NULL)
+					continue;
+				else
+					break;
+			}
+		}
+		(*depth)--;
+		if (*depth == 0 && a != NULL)
+			*a = NULL;
+		*rs = f->rs;
+		if (f->r->anchor->match || (match  != NULL && *match))
+			quick = f->r->quick;
+		*r = TAILQ_NEXT(f->r, entries);
+	} while (*r == NULL);
+
+	return (quick);
+}
+
+#ifdef INET6
+void
+pf_poolmask(struct pf_addr *naddr, struct pf_addr *raddr,
+    struct pf_addr *rmask, struct pf_addr *saddr, sa_family_t af)
+{
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		naddr->addr32[0] = (raddr->addr32[0] & rmask->addr32[0]) |
+		((rmask->addr32[0] ^ 0xffffffff ) & saddr->addr32[0]);
+		break;
+#endif /* INET */
+	case AF_INET6:
+		naddr->addr32[0] = (raddr->addr32[0] & rmask->addr32[0]) |
+		((rmask->addr32[0] ^ 0xffffffff ) & saddr->addr32[0]);
+		naddr->addr32[1] = (raddr->addr32[1] & rmask->addr32[1]) |
+		((rmask->addr32[1] ^ 0xffffffff ) & saddr->addr32[1]);
+		naddr->addr32[2] = (raddr->addr32[2] & rmask->addr32[2]) |
+		((rmask->addr32[2] ^ 0xffffffff ) & saddr->addr32[2]);
+		naddr->addr32[3] = (raddr->addr32[3] & rmask->addr32[3]) |
+		((rmask->addr32[3] ^ 0xffffffff ) & saddr->addr32[3]);
+		break;
+	}
+}
+
+void
+pf_addr_inc(struct pf_addr *addr, sa_family_t af)
+{
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		addr->addr32[0] = htonl(ntohl(addr->addr32[0]) + 1);
+		break;
+#endif /* INET */
+	case AF_INET6:
+		if (addr->addr32[3] == 0xffffffff) {
+			addr->addr32[3] = 0;
+			if (addr->addr32[2] == 0xffffffff) {
+				addr->addr32[2] = 0;
+				if (addr->addr32[1] == 0xffffffff) {
+					addr->addr32[1] = 0;
+					addr->addr32[0] =
+					    htonl(ntohl(addr->addr32[0]) + 1);
+				} else
+					addr->addr32[1] =
+					    htonl(ntohl(addr->addr32[1]) + 1);
+			} else
+				addr->addr32[2] =
+				    htonl(ntohl(addr->addr32[2]) + 1);
+		} else
+			addr->addr32[3] =
+			    htonl(ntohl(addr->addr32[3]) + 1);
+		break;
+	}
+}
+#endif /* INET6 */
+
+#define mix(a,b,c) \
+	do {					\
+		a -= b; a -= c; a ^= (c >> 13);	\
+		b -= c; b -= a; b ^= (a << 8);	\
+		c -= a; c -= b; c ^= (b >> 13);	\
+		a -= b; a -= c; a ^= (c >> 12);	\
+		b -= c; b -= a; b ^= (a << 16);	\
+		c -= a; c -= b; c ^= (b >> 5);	\
+		a -= b; a -= c; a ^= (c >> 3);	\
+		b -= c; b -= a; b ^= (a << 10);	\
+		c -= a; c -= b; c ^= (b >> 15);	\
+	} while (0)
+
+/*
+ * hash function based on bridge_hash in if_bridge.c
+ */
+void
+pf_hash(struct pf_addr *inaddr, struct pf_addr *hash,
+    struct pf_poolhashkey *key, sa_family_t af)
+{
+	u_int32_t	a = 0x9e3779b9, b = 0x9e3779b9, c = key->key32[0];
+
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		a += inaddr->addr32[0];
+		b += key->key32[1];
+		mix(a, b, c);
+		hash->addr32[0] = c + key->key32[2];
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		a += inaddr->addr32[0];
+		b += inaddr->addr32[2];
+		mix(a, b, c);
+		hash->addr32[0] = c;
+		a += inaddr->addr32[1];
+		b += inaddr->addr32[3];
+		c += key->key32[1];
+		mix(a, b, c);
+		hash->addr32[1] = c;
+		a += inaddr->addr32[2];
+		b += inaddr->addr32[1];
+		c += key->key32[2];
+		mix(a, b, c);
+		hash->addr32[2] = c;
+		a += inaddr->addr32[3];
+		b += inaddr->addr32[0];
+		c += key->key32[3];
+		mix(a, b, c);
+		hash->addr32[3] = c;
+		break;
+#endif /* INET6 */
+	}
+}
+
+int
+pf_map_addr(sa_family_t af, struct pf_rule *r, struct pf_addr *saddr,
+    struct pf_addr *naddr, struct pf_addr *init_addr, struct pf_src_node **sn)
+{
+	unsigned char		 hash[16];
+	struct pf_pool		*rpool = &r->rpool;
+	struct pf_addr		*raddr = &rpool->cur->addr.v.a.addr;
+	struct pf_addr		*rmask = &rpool->cur->addr.v.a.mask;
+	struct pf_pooladdr	*acur = rpool->cur;
+	struct pf_src_node	 k;
+
+	if (*sn == NULL && r->rpool.opts & PF_POOL_STICKYADDR &&
+	    (r->rpool.opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) {
+		k.af = af;
+		PF_ACPY(&k.addr, saddr, af);
+		if (r->rule_flag & PFRULE_RULESRCTRACK ||
+		    r->rpool.opts & PF_POOL_STICKYADDR)
+			k.rule.ptr = r;
+		else
+			k.rule.ptr = NULL;
+		pf_status.scounters[SCNT_SRC_NODE_SEARCH]++;
+		*sn = RB_FIND(pf_src_tree, &tree_src_tracking, &k);
+		if (*sn != NULL && !PF_AZERO(&(*sn)->raddr, af)) {
+			PF_ACPY(naddr, &(*sn)->raddr, af);
+			if (pf_status.debug >= PF_DEBUG_MISC) {
+				printf("pf_map_addr: src tracking maps ");
+				pf_print_host(&k.addr, 0, af);
+				printf(" to ");
+				pf_print_host(naddr, 0, af);
+				printf("\n");
+			}
+			return (0);
+		}
+	}
+
+	if (rpool->cur->addr.type == PF_ADDR_NOROUTE)
+		return (1);
+	if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
+		switch (af) {
+#ifdef INET
+		case AF_INET:
+			if (rpool->cur->addr.p.dyn->pfid_acnt4 < 1 &&
+			    (rpool->opts & PF_POOL_TYPEMASK) !=
+			    PF_POOL_ROUNDROBIN)
+				return (1);
+			 raddr = &rpool->cur->addr.p.dyn->pfid_addr4;
+			 rmask = &rpool->cur->addr.p.dyn->pfid_mask4;
+			break;
+#endif /* INET */
+#ifdef INET6
+		case AF_INET6:
+			if (rpool->cur->addr.p.dyn->pfid_acnt6 < 1 &&
+			    (rpool->opts & PF_POOL_TYPEMASK) !=
+			    PF_POOL_ROUNDROBIN)
+				return (1);
+			raddr = &rpool->cur->addr.p.dyn->pfid_addr6;
+			rmask = &rpool->cur->addr.p.dyn->pfid_mask6;
+			break;
+#endif /* INET6 */
+		}
+	} else if (rpool->cur->addr.type == PF_ADDR_TABLE) {
+		if ((rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_ROUNDROBIN)
+			return (1); /* unsupported */
+	} else {
+		raddr = &rpool->cur->addr.v.a.addr;
+		rmask = &rpool->cur->addr.v.a.mask;
+	}
+
+	switch (rpool->opts & PF_POOL_TYPEMASK) {
+	case PF_POOL_NONE:
+		PF_ACPY(naddr, raddr, af);
+		break;
+	case PF_POOL_BITMASK:
+		PF_POOLMASK(naddr, raddr, rmask, saddr, af);
+		break;
+	case PF_POOL_RANDOM:
+		if (init_addr != NULL && PF_AZERO(init_addr, af)) {
+			switch (af) {
+#ifdef INET
+			case AF_INET:
+				rpool->counter.addr32[0] = htonl(arc4random());
+				break;
+#endif /* INET */
+#ifdef INET6
+			case AF_INET6:
+				if (rmask->addr32[3] != 0xffffffff)
+					rpool->counter.addr32[3] =
+					    htonl(arc4random());
+				else
+					break;
+				if (rmask->addr32[2] != 0xffffffff)
+					rpool->counter.addr32[2] =
+					    htonl(arc4random());
+				else
+					break;
+				if (rmask->addr32[1] != 0xffffffff)
+					rpool->counter.addr32[1] =
+					    htonl(arc4random());
+				else
+					break;
+				if (rmask->addr32[0] != 0xffffffff)
+					rpool->counter.addr32[0] =
+					    htonl(arc4random());
+				break;
+#endif /* INET6 */
+			}
+			PF_POOLMASK(naddr, raddr, rmask, &rpool->counter, af);
+			PF_ACPY(init_addr, naddr, af);
+
+		} else {
+			PF_AINC(&rpool->counter, af);
+			PF_POOLMASK(naddr, raddr, rmask, &rpool->counter, af);
+		}
+		break;
+	case PF_POOL_SRCHASH:
+		pf_hash(saddr, (struct pf_addr *)&hash, &rpool->key, af);
+		PF_POOLMASK(naddr, raddr, rmask, (struct pf_addr *)&hash, af);
+		break;
+	case PF_POOL_ROUNDROBIN:
+		if (rpool->cur->addr.type == PF_ADDR_TABLE) {
+			if (!pfr_pool_get(rpool->cur->addr.p.tbl,
+			    &rpool->tblidx, &rpool->counter,
+			    &raddr, &rmask, af))
+				goto get_addr;
+		} else if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
+			if (!pfr_pool_get(rpool->cur->addr.p.dyn->pfid_kt,
+			    &rpool->tblidx, &rpool->counter,
+			    &raddr, &rmask, af))
+				goto get_addr;
+		} else if (pf_match_addr(0, raddr, rmask, &rpool->counter, af))
+			goto get_addr;
+
+	try_next:
+		if ((rpool->cur = TAILQ_NEXT(rpool->cur, entries)) == NULL)
+			rpool->cur = TAILQ_FIRST(&rpool->list);
+		if (rpool->cur->addr.type == PF_ADDR_TABLE) {
+			rpool->tblidx = -1;
+			if (pfr_pool_get(rpool->cur->addr.p.tbl,
+			    &rpool->tblidx, &rpool->counter,
+			    &raddr, &rmask, af)) {
+				/* table contains no address of type 'af' */
+				if (rpool->cur != acur)
+					goto try_next;
+				return (1);
+			}
+		} else if (rpool->cur->addr.type == PF_ADDR_DYNIFTL) {
+			rpool->tblidx = -1;
+			if (pfr_pool_get(rpool->cur->addr.p.dyn->pfid_kt,
+			    &rpool->tblidx, &rpool->counter,
+			    &raddr, &rmask, af)) {
+				/* table contains no address of type 'af' */
+				if (rpool->cur != acur)
+					goto try_next;
+				return (1);
+			}
+		} else {
+			raddr = &rpool->cur->addr.v.a.addr;
+			rmask = &rpool->cur->addr.v.a.mask;
+			PF_ACPY(&rpool->counter, raddr, af);
+		}
+
+	get_addr:
+		PF_ACPY(naddr, &rpool->counter, af);
+		if (init_addr != NULL && PF_AZERO(init_addr, af))
+			PF_ACPY(init_addr, naddr, af);
+		PF_AINC(&rpool->counter, af);
+		break;
+	}
+	if (*sn != NULL)
+		PF_ACPY(&(*sn)->raddr, naddr, af);
+
+	if (pf_status.debug >= PF_DEBUG_MISC &&
+	    (rpool->opts & PF_POOL_TYPEMASK) != PF_POOL_NONE) {
+		printf("pf_map_addr: selected address ");
+		pf_print_host(naddr, 0, af);
+		printf("\n");
+	}
+
+	return (0);
+}
+
+int
+pf_get_sport(sa_family_t af, u_int8_t proto, struct pf_rule *r,
+    struct pf_addr *saddr, struct pf_addr *daddr, u_int16_t dport,
+    struct pf_addr *naddr, u_int16_t *nport, u_int16_t low, u_int16_t high,
+    struct pf_src_node **sn)
+{
+	struct pf_state_cmp	key;
+	struct pf_addr		init_addr;
+	u_int16_t		cut;
+
+	bzero(&init_addr, sizeof(init_addr));
+	if (pf_map_addr(af, r, saddr, naddr, &init_addr, sn))
+		return (1);
+
+	if (proto == IPPROTO_ICMP) {
+		low = 1;
+		high = 65535;
+	}
+
+	do {
+		key.af = af;
+		key.proto = proto;
+		PF_ACPY(&key.ext.addr, daddr, key.af);
+		PF_ACPY(&key.gwy.addr, naddr, key.af);
+		key.ext.port = dport;
+
+		/*
+		 * port search; start random, step;
+		 * similar 2 portloop in in_pcbbind
+		 */
+		if (!(proto == IPPROTO_TCP || proto == IPPROTO_UDP ||
+		    proto == IPPROTO_ICMP)) {
+			key.gwy.port = dport;
+			if (pf_find_state_all(&key, PF_EXT_GWY, NULL) == NULL)
+				return (0);
+		} else if (low == 0 && high == 0) {
+			key.gwy.port = *nport;
+			if (pf_find_state_all(&key, PF_EXT_GWY, NULL) == NULL)
+				return (0);
+		} else if (low == high) {
+			key.gwy.port = htons(low);
+			if (pf_find_state_all(&key, PF_EXT_GWY, NULL) == NULL) {
+				*nport = htons(low);
+				return (0);
+			}
+		} else {
+			u_int16_t tmp;
+
+			if (low > high) {
+				tmp = low;
+				low = high;
+				high = tmp;
+			}
+			/* low < high */
+			cut = htonl(arc4random()) % (1 + high - low) + low;
+			/* low <= cut <= high */
+			for (tmp = cut; tmp <= high; ++(tmp)) {
+				key.gwy.port = htons(tmp);
+				if (pf_find_state_all(&key, PF_EXT_GWY, NULL) ==
+				    NULL) {
+					*nport = htons(tmp);
+					return (0);
+				}
+			}
+			for (tmp = cut - 1; tmp >= low; --(tmp)) {
+				key.gwy.port = htons(tmp);
+				if (pf_find_state_all(&key, PF_EXT_GWY, NULL) ==
+				    NULL) {
+					*nport = htons(tmp);
+					return (0);
+				}
+			}
+		}
+
+		switch (r->rpool.opts & PF_POOL_TYPEMASK) {
+		case PF_POOL_RANDOM:
+		case PF_POOL_ROUNDROBIN:
+			if (pf_map_addr(af, r, saddr, naddr, &init_addr, sn))
+				return (1);
+			break;
+		case PF_POOL_NONE:
+		case PF_POOL_SRCHASH:
+		case PF_POOL_BITMASK:
+		default:
+			return (1);
+		}
+	} while (! PF_AEQ(&init_addr, naddr, af) );
+
+	return (1);					/* none available */
+}
+
+struct pf_rule *
+pf_match_translation(struct pf_pdesc *pd, struct mbuf *m, int off,
+    int direction, struct pfi_kif *kif, struct pf_addr *saddr, u_int16_t sport,
+    struct pf_addr *daddr, u_int16_t dport, int rs_num)
+{
+	struct pf_rule		*r, *rm = NULL;
+	struct pf_ruleset	*ruleset = NULL;
+	int			 tag = -1;
+	int			 rtableid = -1;
+	int			 asd = 0;
+
+	r = TAILQ_FIRST(pf_main_ruleset.rules[rs_num].active.ptr);
+	while (r && rm == NULL) {
+		struct pf_rule_addr	*src = NULL, *dst = NULL;
+		struct pf_addr_wrap	*xdst = NULL;
+
+		if (r->action == PF_BINAT && direction == PF_IN) {
+			src = &r->dst;
+			if (r->rpool.cur != NULL)
+				xdst = &r->rpool.cur->addr;
+		} else {
+			src = &r->src;
+			dst = &r->dst;
+		}
+
+		r->evaluations++;
+		if (pfi_kif_match(r->kif, kif) == r->ifnot)
+			r = r->skip[PF_SKIP_IFP].ptr;
+		else if (r->direction && r->direction != direction)
+			r = r->skip[PF_SKIP_DIR].ptr;
+		else if (r->af && r->af != pd->af)
+			r = r->skip[PF_SKIP_AF].ptr;
+		else if (r->proto && r->proto != pd->proto)
+			r = r->skip[PF_SKIP_PROTO].ptr;
+		else if (PF_MISMATCHAW(&src->addr, saddr, pd->af,
+		    src->neg, kif))
+			r = r->skip[src == &r->src ? PF_SKIP_SRC_ADDR :
+			    PF_SKIP_DST_ADDR].ptr;
+		else if (src->port_op && !pf_match_port(src->port_op,
+		    src->port[0], src->port[1], sport))
+			r = r->skip[src == &r->src ? PF_SKIP_SRC_PORT :
+			    PF_SKIP_DST_PORT].ptr;
+		else if (dst != NULL &&
+		    PF_MISMATCHAW(&dst->addr, daddr, pd->af, dst->neg, NULL))
+			r = r->skip[PF_SKIP_DST_ADDR].ptr;
+		else if (xdst != NULL && PF_MISMATCHAW(xdst, daddr, pd->af,
+		    0, NULL))
+			r = TAILQ_NEXT(r, entries);
+		else if (dst != NULL && dst->port_op &&
+		    !pf_match_port(dst->port_op, dst->port[0],
+		    dst->port[1], dport))
+			r = r->skip[PF_SKIP_DST_PORT].ptr;
+		else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->os_fingerprint != PF_OSFP_ANY && (pd->proto !=
+		    IPPROTO_TCP || !pf_osfp_match(pf_osfp_fingerprint(pd, m,
+		    off, pd->hdr.tcp), r->os_fingerprint)))
+			r = TAILQ_NEXT(r, entries);
+		else {
+			if (r->tag)
+				tag = r->tag;
+			if (r->rtableid >= 0)
+				rtableid = r->rtableid;
+			if (r->anchor == NULL) {
+				rm = r;
+			} else
+				pf_step_into_anchor(&asd, &ruleset, rs_num,
+				    &r, NULL, NULL);
+		}
+		if (r == NULL)
+			pf_step_out_of_anchor(&asd, &ruleset, rs_num, &r,
+			    NULL, NULL);
+	}
+	if (pf_tag_packet(m, pd->pf_mtag, tag, rtableid))
+		return (NULL);
+	if (rm != NULL && (rm->action == PF_NONAT ||
+	    rm->action == PF_NORDR || rm->action == PF_NOBINAT))
+		return (NULL);
+	return (rm);
+}
+
+struct pf_rule *
+pf_get_translation(struct pf_pdesc *pd, struct mbuf *m, int off, int direction,
+    struct pfi_kif *kif, struct pf_src_node **sn,
+    struct pf_addr *saddr, u_int16_t sport,
+    struct pf_addr *daddr, u_int16_t dport,
+    struct pf_addr *naddr, u_int16_t *nport)
+{
+	struct pf_rule	*r = NULL;
+
+	if (direction == PF_OUT) {
+		r = pf_match_translation(pd, m, off, direction, kif, saddr,
+		    sport, daddr, dport, PF_RULESET_BINAT);
+		if (r == NULL)
+			r = pf_match_translation(pd, m, off, direction, kif,
+			    saddr, sport, daddr, dport, PF_RULESET_NAT);
+	} else {
+		r = pf_match_translation(pd, m, off, direction, kif, saddr,
+		    sport, daddr, dport, PF_RULESET_RDR);
+		if (r == NULL)
+			r = pf_match_translation(pd, m, off, direction, kif,
+			    saddr, sport, daddr, dport, PF_RULESET_BINAT);
+	}
+
+	if (r != NULL) {
+		switch (r->action) {
+		case PF_NONAT:
+		case PF_NOBINAT:
+		case PF_NORDR:
+			return (NULL);
+		case PF_NAT:
+			if (pf_get_sport(pd->af, pd->proto, r, saddr,
+			    daddr, dport, naddr, nport, r->rpool.proxy_port[0],
+			    r->rpool.proxy_port[1], sn)) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: NAT proxy port allocation "
+				    "(%u-%u) failed\n",
+				    r->rpool.proxy_port[0],
+				    r->rpool.proxy_port[1]));
+				return (NULL);
+			}
+			break;
+		case PF_BINAT:
+			switch (direction) {
+			case PF_OUT:
+				if (r->rpool.cur->addr.type == PF_ADDR_DYNIFTL){
+					switch (pd->af) {
+#ifdef INET
+					case AF_INET:
+						if (r->rpool.cur->addr.p.dyn->
+						    pfid_acnt4 < 1)
+							return (NULL);
+						PF_POOLMASK(naddr,
+						    &r->rpool.cur->addr.p.dyn->
+						    pfid_addr4,
+						    &r->rpool.cur->addr.p.dyn->
+						    pfid_mask4,
+						    saddr, AF_INET);
+						break;
+#endif /* INET */
+#ifdef INET6
+					case AF_INET6:
+						if (r->rpool.cur->addr.p.dyn->
+						    pfid_acnt6 < 1)
+							return (NULL);
+						PF_POOLMASK(naddr,
+						    &r->rpool.cur->addr.p.dyn->
+						    pfid_addr6,
+						    &r->rpool.cur->addr.p.dyn->
+						    pfid_mask6,
+						    saddr, AF_INET6);
+						break;
+#endif /* INET6 */
+					}
+				} else
+					PF_POOLMASK(naddr,
+					    &r->rpool.cur->addr.v.a.addr,
+					    &r->rpool.cur->addr.v.a.mask,
+					    saddr, pd->af);
+				break;
+			case PF_IN:
+				if (r->src.addr.type == PF_ADDR_DYNIFTL) {
+					switch (pd->af) {
+#ifdef INET
+					case AF_INET:
+						if (r->src.addr.p.dyn->
+						    pfid_acnt4 < 1)
+							return (NULL);
+						PF_POOLMASK(naddr,
+						    &r->src.addr.p.dyn->
+						    pfid_addr4,
+						    &r->src.addr.p.dyn->
+						    pfid_mask4,
+						    daddr, AF_INET);
+						break;
+#endif /* INET */
+#ifdef INET6
+					case AF_INET6:
+						if (r->src.addr.p.dyn->
+						    pfid_acnt6 < 1)
+							return (NULL);
+						PF_POOLMASK(naddr,
+						    &r->src.addr.p.dyn->
+						    pfid_addr6,
+						    &r->src.addr.p.dyn->
+						    pfid_mask6,
+						    daddr, AF_INET6);
+						break;
+#endif /* INET6 */
+					}
+				} else
+					PF_POOLMASK(naddr,
+					    &r->src.addr.v.a.addr,
+					    &r->src.addr.v.a.mask, daddr,
+					    pd->af);
+				break;
+			}
+			break;
+		case PF_RDR: {
+			if (pf_map_addr(pd->af, r, saddr, naddr, NULL, sn))
+				return (NULL);
+			if ((r->rpool.opts & PF_POOL_TYPEMASK) ==
+			    PF_POOL_BITMASK)
+				PF_POOLMASK(naddr, naddr,
+				    &r->rpool.cur->addr.v.a.mask, daddr,
+				    pd->af);
+
+			if (r->rpool.proxy_port[1]) {
+				u_int32_t	tmp_nport;
+
+				tmp_nport = ((ntohs(dport) -
+				    ntohs(r->dst.port[0])) %
+				    (r->rpool.proxy_port[1] -
+				    r->rpool.proxy_port[0] + 1)) +
+				    r->rpool.proxy_port[0];
+
+				/* wrap around if necessary */
+				if (tmp_nport > 65535)
+					tmp_nport -= 65535;
+				*nport = htons((u_int16_t)tmp_nport);
+			} else if (r->rpool.proxy_port[0])
+				*nport = htons(r->rpool.proxy_port[0]);
+			break;
+		}
+		default:
+			return (NULL);
+		}
+	}
+
+	return (r);
+}
+
+int
+#ifdef __FreeBSD__
+pf_socket_lookup(int direction, struct pf_pdesc *pd, struct inpcb *inp_arg)
+#else
+pf_socket_lookup(int direction, struct pf_pdesc *pd)
+#endif
+{
+	struct pf_addr		*saddr, *daddr;
+	u_int16_t		 sport, dport;
+#ifdef __FreeBSD__
+	struct inpcbinfo	*pi;
+#else
+	struct inpcbtable	*tb;
+#endif
+	struct inpcb		*inp;
+
+	if (pd == NULL)
+		return (-1);
+	pd->lookup.uid = UID_MAX;
+	pd->lookup.gid = GID_MAX;
+	pd->lookup.pid = NO_PID;		/* XXX: revisit */
+#ifdef __FreeBSD__
+	if (inp_arg != NULL) {
+		INP_LOCK_ASSERT(inp_arg);
+		pd->lookup.uid = inp_arg->inp_cred->cr_uid;
+		pd->lookup.gid = inp_arg->inp_cred->cr_groups[0];
+		return (1);
+	}
+#endif
+	switch (pd->proto) {
+	case IPPROTO_TCP:
+		if (pd->hdr.tcp == NULL)
+			return (-1);
+		sport = pd->hdr.tcp->th_sport;
+		dport = pd->hdr.tcp->th_dport;
+#ifdef __FreeBSD__
+		pi = &V_tcbinfo;
+#else
+		tb = &tcbtable;
+#endif
+		break;
+	case IPPROTO_UDP:
+		if (pd->hdr.udp == NULL)
+			return (-1);
+		sport = pd->hdr.udp->uh_sport;
+		dport = pd->hdr.udp->uh_dport;
+#ifdef __FreeBSD__
+		pi = &V_udbinfo;
+#else
+		tb = &udbtable;
+#endif
+		break;
+	default:
+		return (-1);
+	}
+	if (direction == PF_IN) {
+		saddr = pd->src;
+		daddr = pd->dst;
+	} else {
+		u_int16_t	p;
+
+		p = sport;
+		sport = dport;
+		dport = p;
+		saddr = pd->dst;
+		daddr = pd->src;
+	}
+	switch (pd->af) {
+#ifdef INET
+	case AF_INET:
+#ifdef __FreeBSD__
+		INP_INFO_RLOCK(pi);	/* XXX LOR */
+		inp = in_pcblookup_hash(pi, saddr->v4, sport, daddr->v4,
+			dport, 0, NULL);
+		if (inp == NULL) {
+			inp = in_pcblookup_hash(pi, saddr->v4, sport,
+			   daddr->v4, dport, INPLOOKUP_WILDCARD, NULL);
+			if(inp == NULL) {
+				INP_INFO_RUNLOCK(pi);
+				return (-1);
+			}
+		}
+#else
+		inp = in_pcbhashlookup(tb, saddr->v4, sport, daddr->v4, dport);
+		if (inp == NULL) {
+			inp = in_pcblookup_listen(tb, daddr->v4, dport, 0);
+			if (inp == NULL)
+				return (-1);
+		}
+#endif
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+#ifdef __FreeBSD__
+		INP_INFO_RLOCK(pi);
+		inp = in6_pcblookup_hash(pi, &saddr->v6, sport,
+			&daddr->v6, dport, 0, NULL);
+		if (inp == NULL) {
+			inp = in6_pcblookup_hash(pi, &saddr->v6, sport,
+			&daddr->v6, dport, INPLOOKUP_WILDCARD, NULL);
+			if (inp == NULL) {
+				INP_INFO_RUNLOCK(pi);
+				return (-1);
+			}
+		}
+#else
+		inp = in6_pcbhashlookup(tb, &saddr->v6, sport, &daddr->v6,
+		    dport);
+		if (inp == NULL) {
+			inp = in6_pcblookup_listen(tb, &daddr->v6, dport, 0);
+			if (inp == NULL)
+				return (-1);
+		}
+#endif
+		break;
+#endif /* INET6 */
+
+	default:
+		return (-1);
+	}
+#ifdef __FreeBSD__
+	pd->lookup.uid = inp->inp_cred->cr_uid;
+	pd->lookup.gid = inp->inp_cred->cr_groups[0];
+	INP_INFO_RUNLOCK(pi);
+#else
+	pd->lookup.uid = inp->inp_socket->so_euid;
+	pd->lookup.gid = inp->inp_socket->so_egid;
+	pd->lookup.pid = inp->inp_socket->so_cpid;
+#endif
+	return (1);
+}
+
+u_int8_t
+pf_get_wscale(struct mbuf *m, int off, u_int16_t th_off, sa_family_t af)
+{
+	int		 hlen;
+	u_int8_t	 hdr[60];
+	u_int8_t	*opt, optlen;
+	u_int8_t	 wscale = 0;
+
+	hlen = th_off << 2;		/* hlen <= sizeof(hdr) */
+	if (hlen <= sizeof(struct tcphdr))
+		return (0);
+	if (!pf_pull_hdr(m, off, hdr, hlen, NULL, NULL, af))
+		return (0);
+	opt = hdr + sizeof(struct tcphdr);
+	hlen -= sizeof(struct tcphdr);
+	while (hlen >= 3) {
+		switch (*opt) {
+		case TCPOPT_EOL:
+		case TCPOPT_NOP:
+			++opt;
+			--hlen;
+			break;
+		case TCPOPT_WINDOW:
+			wscale = opt[2];
+			if (wscale > TCP_MAX_WINSHIFT)
+				wscale = TCP_MAX_WINSHIFT;
+			wscale |= PF_WSCALE_FLAG;
+			/* FALLTHROUGH */
+		default:
+			optlen = opt[1];
+			if (optlen < 2)
+				optlen = 2;
+			hlen -= optlen;
+			opt += optlen;
+			break;
+		}
+	}
+	return (wscale);
+}
+
+u_int16_t
+pf_get_mss(struct mbuf *m, int off, u_int16_t th_off, sa_family_t af)
+{
+	int		 hlen;
+	u_int8_t	 hdr[60];
+	u_int8_t	*opt, optlen;
+	u_int16_t	 mss = V_tcp_mssdflt;
+
+	hlen = th_off << 2;	/* hlen <= sizeof(hdr) */
+	if (hlen <= sizeof(struct tcphdr))
+		return (0);
+	if (!pf_pull_hdr(m, off, hdr, hlen, NULL, NULL, af))
+		return (0);
+	opt = hdr + sizeof(struct tcphdr);
+	hlen -= sizeof(struct tcphdr);
+	while (hlen >= TCPOLEN_MAXSEG) {
+		switch (*opt) {
+		case TCPOPT_EOL:
+		case TCPOPT_NOP:
+			++opt;
+			--hlen;
+			break;
+		case TCPOPT_MAXSEG:
+			bcopy((caddr_t)(opt + 2), (caddr_t)&mss, 2);
+			NTOHS(mss);
+			/* FALLTHROUGH */
+		default:
+			optlen = opt[1];
+			if (optlen < 2)
+				optlen = 2;
+			hlen -= optlen;
+			opt += optlen;
+			break;
+		}
+	}
+	return (mss);
+}
+
+u_int16_t
+pf_calc_mss(struct pf_addr *addr, sa_family_t af, u_int16_t offer)
+{
+#ifdef INET
+	struct sockaddr_in	*dst;
+	struct route		 ro;
+#endif /* INET */
+#ifdef INET6
+	struct sockaddr_in6	*dst6;
+	struct route_in6	 ro6;
+#endif /* INET6 */
+	struct rtentry		*rt = NULL;
+	int			 hlen = 0;	/* make the compiler happy */
+	u_int16_t		 mss = V_tcp_mssdflt;
+
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		hlen = sizeof(struct ip);
+		bzero(&ro, sizeof(ro));
+		dst = (struct sockaddr_in *)&ro.ro_dst;
+		dst->sin_family = AF_INET;
+		dst->sin_len = sizeof(*dst);
+		dst->sin_addr = addr->v4;
+#ifdef __FreeBSD__
+#ifdef RTF_PRCLONING
+		rtalloc_ign(&ro, (RTF_CLONING | RTF_PRCLONING));
+#else /* !RTF_PRCLONING */
+		in_rtalloc_ign(&ro, 0, 0);
+#endif
+#else /* ! __FreeBSD__ */
+		rtalloc_noclone(&ro, NO_CLONING);
+#endif
+		rt = ro.ro_rt;
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		hlen = sizeof(struct ip6_hdr);
+		bzero(&ro6, sizeof(ro6));
+		dst6 = (struct sockaddr_in6 *)&ro6.ro_dst;
+		dst6->sin6_family = AF_INET6;
+		dst6->sin6_len = sizeof(*dst6);
+		dst6->sin6_addr = addr->v6;
+#ifdef __FreeBSD__
+#ifdef RTF_PRCLONING
+		rtalloc_ign((struct route *)&ro6,
+		    (RTF_CLONING | RTF_PRCLONING));
+#else /* !RTF_PRCLONING */
+		rtalloc_ign((struct route *)&ro6, 0);
+#endif
+#else /* ! __FreeBSD__ */
+		rtalloc_noclone((struct route *)&ro6, NO_CLONING);
+#endif
+		rt = ro6.ro_rt;
+		break;
+#endif /* INET6 */
+	}
+
+	if (rt && rt->rt_ifp) {
+		mss = rt->rt_ifp->if_mtu - hlen - sizeof(struct tcphdr);
+		mss = max(V_tcp_mssdflt, mss);
+		RTFREE(rt);
+	}
+	mss = min(mss, offer);
+	mss = max(mss, 64);		/* sanity - at least max opt space */
+	return (mss);
+}
+
+void
+pf_set_rt_ifp(struct pf_state *s, struct pf_addr *saddr)
+{
+	struct pf_rule *r = s->rule.ptr;
+
+	s->rt_kif = NULL;
+	if (!r->rt || r->rt == PF_FASTROUTE)
+		return;
+	switch (s->af) {
+#ifdef INET
+	case AF_INET:
+		pf_map_addr(AF_INET, r, saddr, &s->rt_addr, NULL,
+		    &s->nat_src_node);
+		s->rt_kif = r->rpool.cur->kif;
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		pf_map_addr(AF_INET6, r, saddr, &s->rt_addr, NULL,
+		    &s->nat_src_node);
+		s->rt_kif = r->rpool.cur->kif;
+		break;
+#endif /* INET6 */
+	}
+}
+
+int
+pf_test_tcp(struct pf_rule **rm, struct pf_state **sm, int direction,
+    struct pfi_kif *kif, struct mbuf *m, int off, void *h,
+#ifdef __FreeBSD__
+    struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm,
+    struct ifqueue *ifq, struct inpcb *inp)
+#else
+    struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm,
+    struct ifqueue *ifq)
+#endif
+{
+	struct pf_rule		*nr = NULL;
+	struct pf_addr		*saddr = pd->src, *daddr = pd->dst;
+	struct tcphdr		*th = pd->hdr.tcp;
+	u_int16_t		 bport, nport = 0;
+	sa_family_t		 af = pd->af;
+	struct pf_rule		*r, *a = NULL;
+	struct pf_ruleset	*ruleset = NULL;
+	struct pf_src_node	*nsn = NULL;
+	u_short			 reason;
+	int			 rewrite = 0;
+	int			 tag = -1, rtableid = -1;
+	u_int16_t		 mss = V_tcp_mssdflt;
+	int			 asd = 0;
+	int			 match = 0;
+
+	if (pf_check_congestion(ifq)) {
+		REASON_SET(&reason, PFRES_CONGEST);
+		return (PF_DROP);
+	}
+
+#ifdef __FreeBSD__
+	if (inp != NULL)
+		pd->lookup.done = pf_socket_lookup(direction, pd, inp);
+	else if (debug_pfugidhack) {
+		PF_UNLOCK();
+		DPFPRINTF(PF_DEBUG_MISC, ("pf: unlocked lookup\n"));
+		pd->lookup.done = pf_socket_lookup(direction, pd, inp);
+		PF_LOCK();
+	}
+#endif
+
+	r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
+
+	if (direction == PF_OUT) {
+		bport = nport = th->th_sport;
+		/* check outgoing packet for BINAT/NAT */
+		if ((nr = pf_get_translation(pd, m, off, PF_OUT, kif, &nsn,
+		    saddr, th->th_sport, daddr, th->th_dport,
+		    &pd->naddr, &nport)) != NULL) {
+			PF_ACPY(&pd->baddr, saddr, af);
+			pf_change_ap(saddr, &th->th_sport, pd->ip_sum,
+			    &th->th_sum, &pd->naddr, nport, 0, af);
+			rewrite++;
+			if (nr->natpass)
+				r = NULL;
+			pd->nat_rule = nr;
+		}
+	} else {
+		bport = nport = th->th_dport;
+		/* check incoming packet for BINAT/RDR */
+		if ((nr = pf_get_translation(pd, m, off, PF_IN, kif, &nsn,
+		    saddr, th->th_sport, daddr, th->th_dport,
+		    &pd->naddr, &nport)) != NULL) {
+			PF_ACPY(&pd->baddr, daddr, af);
+			pf_change_ap(daddr, &th->th_dport, pd->ip_sum,
+			    &th->th_sum, &pd->naddr, nport, 0, af);
+			rewrite++;
+			if (nr->natpass)
+				r = NULL;
+			pd->nat_rule = nr;
+		}
+	}
+
+	while (r != NULL) {
+		r->evaluations++;
+		if (pfi_kif_match(r->kif, kif) == r->ifnot)
+			r = r->skip[PF_SKIP_IFP].ptr;
+		else if (r->direction && r->direction != direction)
+			r = r->skip[PF_SKIP_DIR].ptr;
+		else if (r->af && r->af != af)
+			r = r->skip[PF_SKIP_AF].ptr;
+		else if (r->proto && r->proto != IPPROTO_TCP)
+			r = r->skip[PF_SKIP_PROTO].ptr;
+		else if (PF_MISMATCHAW(&r->src.addr, saddr, af,
+		    r->src.neg, kif))
+			r = r->skip[PF_SKIP_SRC_ADDR].ptr;
+		else if (r->src.port_op && !pf_match_port(r->src.port_op,
+		    r->src.port[0], r->src.port[1], th->th_sport))
+			r = r->skip[PF_SKIP_SRC_PORT].ptr;
+		else if (PF_MISMATCHAW(&r->dst.addr, daddr, af,
+		    r->dst.neg, NULL))
+			r = r->skip[PF_SKIP_DST_ADDR].ptr;
+		else if (r->dst.port_op && !pf_match_port(r->dst.port_op,
+		    r->dst.port[0], r->dst.port[1], th->th_dport))
+			r = r->skip[PF_SKIP_DST_PORT].ptr;
+		else if (r->tos && !(r->tos == pd->tos))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->rule_flag & PFRULE_FRAGMENT)
+			r = TAILQ_NEXT(r, entries);
+		else if ((r->flagset & th->th_flags) != r->flags)
+			r = TAILQ_NEXT(r, entries);
+		else if (r->uid.op && (pd->lookup.done || (pd->lookup.done =
+#ifdef __FreeBSD__
+		    pf_socket_lookup(direction, pd, inp), 1)) &&
+#else
+		    pf_socket_lookup(direction, pd), 1)) &&
+#endif
+		    !pf_match_uid(r->uid.op, r->uid.uid[0], r->uid.uid[1],
+		    pd->lookup.uid))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->gid.op && (pd->lookup.done || (pd->lookup.done =
+#ifdef __FreeBSD__
+		    pf_socket_lookup(direction, pd, inp), 1)) &&
+#else
+		    pf_socket_lookup(direction, pd), 1)) &&
+#endif
+		    !pf_match_gid(r->gid.op, r->gid.gid[0], r->gid.gid[1],
+		    pd->lookup.gid))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->prob && r->prob <= arc4random())
+			r = TAILQ_NEXT(r, entries);
+		else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->os_fingerprint != PF_OSFP_ANY && !pf_osfp_match(
+		    pf_osfp_fingerprint(pd, m, off, th), r->os_fingerprint))
+			r = TAILQ_NEXT(r, entries);
+		else {
+			if (r->tag)
+				tag = r->tag;
+			if (r->rtableid >= 0)
+				rtableid = r->rtableid;
+			if (r->anchor == NULL) {
+				match = 1;
+				*rm = r;
+				*am = a;
+				*rsm = ruleset;
+				if ((*rm)->quick)
+					break;
+				r = TAILQ_NEXT(r, entries);
+			} else
+				pf_step_into_anchor(&asd, &ruleset,
+				    PF_RULESET_FILTER, &r, &a, &match);
+		}
+		if (r == NULL && pf_step_out_of_anchor(&asd, &ruleset,
+		    PF_RULESET_FILTER, &r, &a, &match))
+			break;
+	}
+	r = *rm;
+	a = *am;
+	ruleset = *rsm;
+
+	REASON_SET(&reason, PFRES_MATCH);
+
+	if (r->log || (nr != NULL && nr->natpass && nr->log)) {
+		if (rewrite)
+#ifdef __FreeBSD__
+			m_copyback(m, off, sizeof(*th), (caddr_t)th);
+#else
+			m_copyback(m, off, sizeof(*th), th);
+#endif
+		PFLOG_PACKET(kif, h, m, af, direction, reason, r->log ? r : nr,
+		    a, ruleset, pd);
+	}
+
+	if ((r->action == PF_DROP) &&
+	    ((r->rule_flag & PFRULE_RETURNRST) ||
+	    (r->rule_flag & PFRULE_RETURNICMP) ||
+	    (r->rule_flag & PFRULE_RETURN))) {
+		/* undo NAT changes, if they have taken place */
+		if (nr != NULL) {
+			if (direction == PF_OUT) {
+				pf_change_ap(saddr, &th->th_sport, pd->ip_sum,
+				    &th->th_sum, &pd->baddr, bport, 0, af);
+				rewrite++;
+			} else {
+				pf_change_ap(daddr, &th->th_dport, pd->ip_sum,
+				    &th->th_sum, &pd->baddr, bport, 0, af);
+				rewrite++;
+			}
+		}
+		if (((r->rule_flag & PFRULE_RETURNRST) ||
+		    (r->rule_flag & PFRULE_RETURN)) &&
+		    !(th->th_flags & TH_RST)) {
+			u_int32_t ack = ntohl(th->th_seq) + pd->p_len;
+
+			if (th->th_flags & TH_SYN)
+				ack++;
+			if (th->th_flags & TH_FIN)
+				ack++;
+#ifdef __FreeBSD__
+			pf_send_tcp(m, r, af, pd->dst,
+#else
+			pf_send_tcp(r, af, pd->dst,
+#endif
+			    pd->src, th->th_dport, th->th_sport,
+			    ntohl(th->th_ack), ack, TH_RST|TH_ACK, 0, 0,
+			    r->return_ttl, 1, 0, pd->eh, kif->pfik_ifp);
+		} else if ((af == AF_INET) && r->return_icmp)
+			pf_send_icmp(m, r->return_icmp >> 8,
+			    r->return_icmp & 255, af, r);
+		else if ((af == AF_INET6) && r->return_icmp6)
+			pf_send_icmp(m, r->return_icmp6 >> 8,
+			    r->return_icmp6 & 255, af, r);
+	}
+
+	if (r->action == PF_DROP)
+		return (PF_DROP);
+
+	if (pf_tag_packet(m, pd->pf_mtag, tag, rtableid)) {
+		REASON_SET(&reason, PFRES_MEMORY);
+		return (PF_DROP);
+	}
+
+	if (r->keep_state || nr != NULL ||
+	    (pd->flags & PFDESC_TCP_NORM)) {
+		/* create new state */
+		u_int16_t	 len;
+		struct pf_state	*s = NULL;
+		struct pf_src_node *sn = NULL;
+
+		len = pd->tot_len - off - (th->th_off << 2);
+
+		/* check maximums */
+		if (r->max_states && (r->states >= r->max_states)) {
+			pf_status.lcounters[LCNT_STATES]++;
+			REASON_SET(&reason, PFRES_MAXSTATES);
+			goto cleanup;
+		}
+		/* src node for filter rule */
+		if ((r->rule_flag & PFRULE_SRCTRACK ||
+		    r->rpool.opts & PF_POOL_STICKYADDR) &&
+		    pf_insert_src_node(&sn, r, saddr, af) != 0) {
+			REASON_SET(&reason, PFRES_SRCLIMIT);
+			goto cleanup;
+		}
+		/* src node for translation rule */
+		if (nr != NULL && (nr->rpool.opts & PF_POOL_STICKYADDR) &&
+		    ((direction == PF_OUT &&
+		    pf_insert_src_node(&nsn, nr, &pd->baddr, af) != 0) ||
+		    (pf_insert_src_node(&nsn, nr, saddr, af) != 0))) {
+			REASON_SET(&reason, PFRES_SRCLIMIT);
+			goto cleanup;
+		}
+		s = pool_get(&pf_state_pl, PR_NOWAIT);
+		if (s == NULL) {
+			REASON_SET(&reason, PFRES_MEMORY);
+cleanup:
+			if (sn != NULL && sn->states == 0 && sn->expire == 0) {
+				RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
+				pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+				pf_status.src_nodes--;
+				pool_put(&pf_src_tree_pl, sn);
+			}
+			if (nsn != sn && nsn != NULL && nsn->states == 0 &&
+			    nsn->expire == 0) {
+				RB_REMOVE(pf_src_tree, &tree_src_tracking, nsn);
+				pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+				pf_status.src_nodes--;
+				pool_put(&pf_src_tree_pl, nsn);
+			}
+			return (PF_DROP);
+		}
+		bzero(s, sizeof(*s));
+		s->rule.ptr = r;
+		s->nat_rule.ptr = nr;
+		s->anchor.ptr = a;
+		STATE_INC_COUNTERS(s);
+		if (r->allow_opts)
+			s->state_flags |= PFSTATE_ALLOWOPTS;
+		if (r->rule_flag & PFRULE_STATESLOPPY)
+			s->state_flags |= PFSTATE_SLOPPY;
+		s->log = r->log & PF_LOG_ALL;
+		if (nr != NULL)
+			s->log |= nr->log & PF_LOG_ALL;
+		s->proto = IPPROTO_TCP;
+		s->direction = direction;
+		s->af = af;
+		if (direction == PF_OUT) {
+			PF_ACPY(&s->gwy.addr, saddr, af);
+			s->gwy.port = th->th_sport;		/* sport */
+			PF_ACPY(&s->ext.addr, daddr, af);
+			s->ext.port = th->th_dport;
+			if (nr != NULL) {
+				PF_ACPY(&s->lan.addr, &pd->baddr, af);
+				s->lan.port = bport;
+			} else {
+				PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
+				s->lan.port = s->gwy.port;
+			}
+		} else {
+			PF_ACPY(&s->lan.addr, daddr, af);
+			s->lan.port = th->th_dport;
+			PF_ACPY(&s->ext.addr, saddr, af);
+			s->ext.port = th->th_sport;
+			if (nr != NULL) {
+				PF_ACPY(&s->gwy.addr, &pd->baddr, af);
+				s->gwy.port = bport;
+			} else {
+				PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
+				s->gwy.port = s->lan.port;
+			}
+		}
+
+		s->src.seqlo = ntohl(th->th_seq);
+		s->src.seqhi = s->src.seqlo + len + 1;
+		if ((th->th_flags & (TH_SYN|TH_ACK)) == TH_SYN &&
+		    r->keep_state == PF_STATE_MODULATE) {
+			/* Generate sequence number modulator */
+#ifdef __FreeBSD__
+			while ((s->src.seqdiff =
+			    pf_new_isn(s) - s->src.seqlo) == 0)
+				;	
+#else
+			while ((s->src.seqdiff =
+			    tcp_rndiss_next() - s->src.seqlo) == 0)
+				;
+#endif
+			pf_change_a(&th->th_seq, &th->th_sum,
+			    htonl(s->src.seqlo + s->src.seqdiff), 0);
+			rewrite = 1;
+		} else
+			s->src.seqdiff = 0;
+		if (th->th_flags & TH_SYN) {
+			s->src.seqhi++;
+			s->src.wscale = pf_get_wscale(m, off, th->th_off, af);
+		}
+		s->src.max_win = MAX(ntohs(th->th_win), 1);
+		if (s->src.wscale & PF_WSCALE_MASK) {
+			/* Remove scale factor from initial window */
+			int win = s->src.max_win;
+			win += 1 << (s->src.wscale & PF_WSCALE_MASK);
+			s->src.max_win = (win - 1) >>
+			    (s->src.wscale & PF_WSCALE_MASK);
+		}
+		if (th->th_flags & TH_FIN)
+			s->src.seqhi++;
+		s->dst.seqhi = 1;
+		s->dst.max_win = 1;
+		s->src.state = TCPS_SYN_SENT;
+		s->dst.state = TCPS_CLOSED;
+		s->creation = time_second;
+		s->expire = time_second;
+		s->timeout = PFTM_TCP_FIRST_PACKET;
+		pf_set_rt_ifp(s, saddr);
+		if (sn != NULL) {
+			s->src_node = sn;
+			s->src_node->states++;
+		}
+		if (nsn != NULL) {
+			PF_ACPY(&nsn->raddr, &pd->naddr, af);
+			s->nat_src_node = nsn;
+			s->nat_src_node->states++;
+		}
+		if ((pd->flags & PFDESC_TCP_NORM) && pf_normalize_tcp_init(m,
+		    off, pd, th, &s->src, &s->dst)) {
+			REASON_SET(&reason, PFRES_MEMORY);
+			pf_src_tree_remove_state(s);
+			STATE_DEC_COUNTERS(s);
+			pool_put(&pf_state_pl, s);
+			return (PF_DROP);
+		}
+		if ((pd->flags & PFDESC_TCP_NORM) && s->src.scrub &&
+		    pf_normalize_tcp_stateful(m, off, pd, &reason, th, s,
+		    &s->src, &s->dst, &rewrite)) {
+			/* This really shouldn't happen!!! */
+			DPFPRINTF(PF_DEBUG_URGENT,
+			    ("pf_normalize_tcp_stateful failed on first pkt"));
+			pf_normalize_tcp_cleanup(s);
+			pf_src_tree_remove_state(s);
+			STATE_DEC_COUNTERS(s);
+			pool_put(&pf_state_pl, s);
+			return (PF_DROP);
+		}
+		if (pf_insert_state(BOUND_IFACE(r, kif), s)) {
+			pf_normalize_tcp_cleanup(s);
+			REASON_SET(&reason, PFRES_STATEINS);
+			pf_src_tree_remove_state(s);
+			STATE_DEC_COUNTERS(s);
+			pool_put(&pf_state_pl, s);
+			return (PF_DROP);
+		} else
+			*sm = s;
+		if (tag > 0) {
+			pf_tag_ref(tag);
+			s->tag = tag;
+		}
+		if ((th->th_flags & (TH_SYN|TH_ACK)) == TH_SYN &&
+		    r->keep_state == PF_STATE_SYNPROXY) {
+			s->src.state = PF_TCPS_PROXY_SRC;
+			if (nr != NULL) {
+				if (direction == PF_OUT) {
+					pf_change_ap(saddr, &th->th_sport,
+					    pd->ip_sum, &th->th_sum, &pd->baddr,
+					    bport, 0, af);
+				} else {
+					pf_change_ap(daddr, &th->th_dport,
+					    pd->ip_sum, &th->th_sum, &pd->baddr,
+					    bport, 0, af);
+				}
+			}
+			s->src.seqhi = htonl(arc4random());
+			/* Find mss option */
+			mss = pf_get_mss(m, off, th->th_off, af);
+			mss = pf_calc_mss(saddr, af, mss);
+			mss = pf_calc_mss(daddr, af, mss);
+			s->src.mss = mss;
+#ifdef __FreeBSD__
+			pf_send_tcp(NULL, r, af, daddr, saddr, th->th_dport,
+#else
+			pf_send_tcp(r, af, daddr, saddr, th->th_dport,
+#endif
+			    th->th_sport, s->src.seqhi, ntohl(th->th_seq) + 1,
+			    TH_SYN|TH_ACK, 0, s->src.mss, 0, 1, 0, NULL, NULL);
+			REASON_SET(&reason, PFRES_SYNPROXY);
+			return (PF_SYNPROXY_DROP);
+		}
+	}
+
+	/* copy back packet headers if we performed NAT operations */
+	if (rewrite)
+		m_copyback(m, off, sizeof(*th), (caddr_t)th);
+
+	return (PF_PASS);
+}
+
+int
+pf_test_udp(struct pf_rule **rm, struct pf_state **sm, int direction,
+    struct pfi_kif *kif, struct mbuf *m, int off, void *h,
+#ifdef __FreeBSD__
+    struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm,
+    struct ifqueue *ifq, struct inpcb *inp)
+#else
+    struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm,
+    struct ifqueue *ifq)
+#endif
+{
+	struct pf_rule		*nr = NULL;
+	struct pf_addr		*saddr = pd->src, *daddr = pd->dst;
+	struct udphdr		*uh = pd->hdr.udp;
+	u_int16_t		 bport, nport = 0;
+	sa_family_t		 af = pd->af;
+	struct pf_rule		*r, *a = NULL;
+	struct pf_ruleset	*ruleset = NULL;
+	struct pf_src_node	*nsn = NULL;
+	u_short			 reason;
+	int			 rewrite = 0;
+	int			 tag = -1, rtableid = -1;
+	int			 asd = 0;
+	int			 match = 0;
+
+	if (pf_check_congestion(ifq)) {
+		REASON_SET(&reason, PFRES_CONGEST);
+		return (PF_DROP);
+	}
+
+#ifdef __FreeBSD__
+	if (inp != NULL)
+		pd->lookup.done = pf_socket_lookup(direction, pd, inp);
+	else if (debug_pfugidhack) {
+		PF_UNLOCK();
+		DPFPRINTF(PF_DEBUG_MISC, ("pf: unlocked lookup\n"));
+		pd->lookup.done = pf_socket_lookup(direction, pd, inp);
+		PF_LOCK();
+	}
+#endif
+
+	r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
+
+	if (direction == PF_OUT) {
+		bport = nport = uh->uh_sport;
+		/* check outgoing packet for BINAT/NAT */
+		if ((nr = pf_get_translation(pd, m, off, PF_OUT, kif, &nsn,
+		    saddr, uh->uh_sport, daddr, uh->uh_dport,
+		    &pd->naddr, &nport)) != NULL) {
+			PF_ACPY(&pd->baddr, saddr, af);
+			pf_change_ap(saddr, &uh->uh_sport, pd->ip_sum,
+			    &uh->uh_sum, &pd->naddr, nport, 1, af);
+			rewrite++;
+			if (nr->natpass)
+				r = NULL;
+			pd->nat_rule = nr;
+		}
+	} else {
+		bport = nport = uh->uh_dport;
+		/* check incoming packet for BINAT/RDR */
+		if ((nr = pf_get_translation(pd, m, off, PF_IN, kif, &nsn,
+		    saddr, uh->uh_sport, daddr, uh->uh_dport, &pd->naddr,
+		    &nport)) != NULL) {
+			PF_ACPY(&pd->baddr, daddr, af);
+			pf_change_ap(daddr, &uh->uh_dport, pd->ip_sum,
+			    &uh->uh_sum, &pd->naddr, nport, 1, af);
+			rewrite++;
+			if (nr->natpass)
+				r = NULL;
+			pd->nat_rule = nr;
+		}
+	}
+
+	while (r != NULL) {
+		r->evaluations++;
+		if (pfi_kif_match(r->kif, kif) == r->ifnot)
+			r = r->skip[PF_SKIP_IFP].ptr;
+		else if (r->direction && r->direction != direction)
+			r = r->skip[PF_SKIP_DIR].ptr;
+		else if (r->af && r->af != af)
+			r = r->skip[PF_SKIP_AF].ptr;
+		else if (r->proto && r->proto != IPPROTO_UDP)
+			r = r->skip[PF_SKIP_PROTO].ptr;
+		else if (PF_MISMATCHAW(&r->src.addr, saddr, af,
+		    r->src.neg, kif))
+			r = r->skip[PF_SKIP_SRC_ADDR].ptr;
+		else if (r->src.port_op && !pf_match_port(r->src.port_op,
+		    r->src.port[0], r->src.port[1], uh->uh_sport))
+			r = r->skip[PF_SKIP_SRC_PORT].ptr;
+		else if (PF_MISMATCHAW(&r->dst.addr, daddr, af,
+		    r->dst.neg, NULL))
+			r = r->skip[PF_SKIP_DST_ADDR].ptr;
+		else if (r->dst.port_op && !pf_match_port(r->dst.port_op,
+		    r->dst.port[0], r->dst.port[1], uh->uh_dport))
+			r = r->skip[PF_SKIP_DST_PORT].ptr;
+		else if (r->tos && !(r->tos == pd->tos))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->rule_flag & PFRULE_FRAGMENT)
+			r = TAILQ_NEXT(r, entries);
+		else if (r->uid.op && (pd->lookup.done || (pd->lookup.done =
+#ifdef __FreeBSD__
+		    pf_socket_lookup(direction, pd, inp), 1)) &&
+#else
+		    pf_socket_lookup(direction, pd), 1)) &&
+#endif
+		    !pf_match_uid(r->uid.op, r->uid.uid[0], r->uid.uid[1],
+		    pd->lookup.uid))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->gid.op && (pd->lookup.done || (pd->lookup.done =
+#ifdef __FreeBSD__
+		    pf_socket_lookup(direction, pd, inp), 1)) &&
+#else
+		    pf_socket_lookup(direction, pd), 1)) &&
+#endif
+		    !pf_match_gid(r->gid.op, r->gid.gid[0], r->gid.gid[1],
+		    pd->lookup.gid))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->prob && r->prob <= arc4random())
+			r = TAILQ_NEXT(r, entries);
+		else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->os_fingerprint != PF_OSFP_ANY)
+			r = TAILQ_NEXT(r, entries);
+		else {
+			if (r->tag)
+				tag = r->tag;
+			if (r->rtableid >= 0)
+				rtableid = r->rtableid;
+			if (r->anchor == NULL) {
+				match = 1;
+				*rm = r;
+				*am = a;
+				*rsm = ruleset;
+				if ((*rm)->quick)
+					break;
+				r = TAILQ_NEXT(r, entries);
+			} else
+				pf_step_into_anchor(&asd, &ruleset,
+				    PF_RULESET_FILTER, &r, &a, &match);
+		}
+		if (r == NULL && pf_step_out_of_anchor(&asd, &ruleset,
+		    PF_RULESET_FILTER, &r, &a, &match))
+			break;
+	}
+	r = *rm;
+	a = *am;
+	ruleset = *rsm;
+
+	REASON_SET(&reason, PFRES_MATCH);
+
+	if (r->log || (nr != NULL && nr->natpass && nr->log)) {
+		if (rewrite)
+#ifdef __FreeBSD__
+			m_copyback(m, off, sizeof(*uh), (caddr_t)uh);
+#else
+			m_copyback(m, off, sizeof(*uh), uh);
+#endif
+		PFLOG_PACKET(kif, h, m, af, direction, reason, r->log ? r : nr,
+		    a, ruleset, pd);
+	}
+
+	if ((r->action == PF_DROP) &&
+	    ((r->rule_flag & PFRULE_RETURNICMP) ||
+	    (r->rule_flag & PFRULE_RETURN))) {
+		/* undo NAT changes, if they have taken place */
+		if (nr != NULL) {
+			if (direction == PF_OUT) {
+				pf_change_ap(saddr, &uh->uh_sport, pd->ip_sum,
+				    &uh->uh_sum, &pd->baddr, bport, 1, af);
+				rewrite++;
+			} else {
+				pf_change_ap(daddr, &uh->uh_dport, pd->ip_sum,
+				    &uh->uh_sum, &pd->baddr, bport, 1, af);
+				rewrite++;
+			}
+		}
+		if ((af == AF_INET) && r->return_icmp)
+			pf_send_icmp(m, r->return_icmp >> 8,
+			    r->return_icmp & 255, af, r);
+		else if ((af == AF_INET6) && r->return_icmp6)
+			pf_send_icmp(m, r->return_icmp6 >> 8,
+			    r->return_icmp6 & 255, af, r);
+	}
+
+	if (r->action == PF_DROP)
+		return (PF_DROP);
+
+	if (pf_tag_packet(m, pd->pf_mtag, tag, rtableid)) {
+		REASON_SET(&reason, PFRES_MEMORY);
+		return (PF_DROP);
+	}
+
+	if (r->keep_state || nr != NULL) {
+		/* create new state */
+		struct pf_state	*s = NULL;
+		struct pf_src_node *sn = NULL;
+
+		/* check maximums */
+		if (r->max_states && (r->states >= r->max_states)) {
+			pf_status.lcounters[LCNT_STATES]++;
+			REASON_SET(&reason, PFRES_MAXSTATES);
+			goto cleanup;
+		}
+		/* src node for filter rule */
+		if ((r->rule_flag & PFRULE_SRCTRACK ||
+		    r->rpool.opts & PF_POOL_STICKYADDR) &&
+		    pf_insert_src_node(&sn, r, saddr, af) != 0) {
+			REASON_SET(&reason, PFRES_SRCLIMIT);
+			goto cleanup;
+		}
+		/* src node for translation rule */
+		if (nr != NULL && (nr->rpool.opts & PF_POOL_STICKYADDR) &&
+		    ((direction == PF_OUT &&
+		    pf_insert_src_node(&nsn, nr, &pd->baddr, af) != 0) ||
+		    (pf_insert_src_node(&nsn, nr, saddr, af) != 0))) {
+			REASON_SET(&reason, PFRES_SRCLIMIT);
+			goto cleanup;
+		}
+		s = pool_get(&pf_state_pl, PR_NOWAIT);
+		if (s == NULL) {
+			REASON_SET(&reason, PFRES_MEMORY);
+cleanup:
+			if (sn != NULL && sn->states == 0 && sn->expire == 0) {
+				RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
+				pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+				pf_status.src_nodes--;
+				pool_put(&pf_src_tree_pl, sn);
+			}
+			if (nsn != sn && nsn != NULL && nsn->states == 0 &&
+			    nsn->expire == 0) {
+				RB_REMOVE(pf_src_tree, &tree_src_tracking, nsn);
+				pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+				pf_status.src_nodes--;
+				pool_put(&pf_src_tree_pl, nsn);
+			}
+			return (PF_DROP);
+		}
+		bzero(s, sizeof(*s));
+		s->rule.ptr = r;
+		s->nat_rule.ptr = nr;
+		s->anchor.ptr = a;
+		STATE_INC_COUNTERS(s);
+		if (r->allow_opts)
+			s->state_flags |= PFSTATE_ALLOWOPTS;
+ 		if (r->rule_flag & PFRULE_STATESLOPPY)
+			s->state_flags |= PFSTATE_SLOPPY;
+		s->log = r->log & PF_LOG_ALL;
+		if (nr != NULL)
+			s->log |= nr->log & PF_LOG_ALL;
+		s->proto = IPPROTO_UDP;
+		s->direction = direction;
+		s->af = af;
+		if (direction == PF_OUT) {
+			PF_ACPY(&s->gwy.addr, saddr, af);
+			s->gwy.port = uh->uh_sport;
+			PF_ACPY(&s->ext.addr, daddr, af);
+			s->ext.port = uh->uh_dport;
+			if (nr != NULL) {
+				PF_ACPY(&s->lan.addr, &pd->baddr, af);
+				s->lan.port = bport;
+			} else {
+				PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
+				s->lan.port = s->gwy.port;
+			}
+		} else {
+			PF_ACPY(&s->lan.addr, daddr, af);
+			s->lan.port = uh->uh_dport;
+			PF_ACPY(&s->ext.addr, saddr, af);
+			s->ext.port = uh->uh_sport;
+			if (nr != NULL) {
+				PF_ACPY(&s->gwy.addr, &pd->baddr, af);
+				s->gwy.port = bport;
+			} else {
+				PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
+				s->gwy.port = s->lan.port;
+			}
+		}
+		s->src.state = PFUDPS_SINGLE;
+		s->dst.state = PFUDPS_NO_TRAFFIC;
+		s->creation = time_second;
+		s->expire = time_second;
+		s->timeout = PFTM_UDP_FIRST_PACKET;
+		pf_set_rt_ifp(s, saddr);
+		if (sn != NULL) {
+			s->src_node = sn;
+			s->src_node->states++;
+		}
+		if (nsn != NULL) {
+			PF_ACPY(&nsn->raddr, &pd->naddr, af);
+			s->nat_src_node = nsn;
+			s->nat_src_node->states++;
+		}
+		if (pf_insert_state(BOUND_IFACE(r, kif), s)) {
+			REASON_SET(&reason, PFRES_STATEINS);
+			pf_src_tree_remove_state(s);
+			STATE_DEC_COUNTERS(s);
+			pool_put(&pf_state_pl, s);
+			return (PF_DROP);
+		} else
+			*sm = s;
+		if (tag > 0) {
+			pf_tag_ref(tag);
+			s->tag = tag;
+		}
+	}
+
+	/* copy back packet headers if we performed NAT operations */
+	if (rewrite)
+		m_copyback(m, off, sizeof(*uh), (caddr_t)uh);
+
+	return (PF_PASS);
+}
+
+int
+pf_test_icmp(struct pf_rule **rm, struct pf_state **sm, int direction,
+    struct pfi_kif *kif, struct mbuf *m, int off, void *h,
+    struct pf_pdesc *pd, struct pf_rule **am, struct pf_ruleset **rsm,
+    struct ifqueue *ifq)
+{
+	struct pf_rule		*nr = NULL;
+	struct pf_addr		*saddr = pd->src, *daddr = pd->dst;
+	struct pf_rule		*r, *a = NULL;
+	struct pf_ruleset	*ruleset = NULL;
+	struct pf_src_node	*nsn = NULL;
+	u_short			 reason;
+	u_int16_t		 icmpid = 0, bport, nport = 0;
+	sa_family_t		 af = pd->af;
+	u_int8_t		 icmptype = 0;	/* make the compiler happy */
+	u_int8_t		 icmpcode = 0;	/* make the compiler happy */
+	int			 state_icmp = 0;
+	int			 tag = -1, rtableid = -1;
+#ifdef INET6
+	int			 rewrite = 0;
+#endif /* INET6 */
+	int			 asd = 0;
+	int			 match = 0;
+
+	if (pf_check_congestion(ifq)) {
+		REASON_SET(&reason, PFRES_CONGEST);
+		return (PF_DROP);
+	}
+
+	switch (pd->proto) {
+#ifdef INET
+	case IPPROTO_ICMP:
+		icmptype = pd->hdr.icmp->icmp_type;
+		icmpcode = pd->hdr.icmp->icmp_code;
+		icmpid = pd->hdr.icmp->icmp_id;
+
+		if (icmptype == ICMP_UNREACH ||
+		    icmptype == ICMP_SOURCEQUENCH ||
+		    icmptype == ICMP_REDIRECT ||
+		    icmptype == ICMP_TIMXCEED ||
+		    icmptype == ICMP_PARAMPROB)
+			state_icmp++;
+		break;
+#endif /* INET */
+#ifdef INET6
+	case IPPROTO_ICMPV6:
+		icmptype = pd->hdr.icmp6->icmp6_type;
+		icmpcode = pd->hdr.icmp6->icmp6_code;
+		icmpid = pd->hdr.icmp6->icmp6_id;
+
+		if (icmptype == ICMP6_DST_UNREACH ||
+		    icmptype == ICMP6_PACKET_TOO_BIG ||
+		    icmptype == ICMP6_TIME_EXCEEDED ||
+		    icmptype == ICMP6_PARAM_PROB)
+			state_icmp++;
+		break;
+#endif /* INET6 */
+	}
+
+	r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
+
+	if (direction == PF_OUT) {
+		bport = nport = icmpid;
+		/* check outgoing packet for BINAT/NAT */
+		if ((nr = pf_get_translation(pd, m, off, PF_OUT, kif, &nsn,
+		    saddr, icmpid, daddr, icmpid, &pd->naddr, &nport)) !=
+		    NULL) {
+			PF_ACPY(&pd->baddr, saddr, af);
+			switch (af) {
+#ifdef INET
+			case AF_INET:
+				pf_change_a(&saddr->v4.s_addr, pd->ip_sum,
+				    pd->naddr.v4.s_addr, 0);
+				pd->hdr.icmp->icmp_cksum = pf_cksum_fixup(
+				    pd->hdr.icmp->icmp_cksum, icmpid, nport, 0);
+				pd->hdr.icmp->icmp_id = nport;
+				m_copyback(m, off, ICMP_MINLEN,
+				    (caddr_t)pd->hdr.icmp);
+				break;
+#endif /* INET */
+#ifdef INET6
+			case AF_INET6:
+				pf_change_a6(saddr, &pd->hdr.icmp6->icmp6_cksum,
+				    &pd->naddr, 0);
+				rewrite++;
+				break;
+#endif /* INET6 */
+			}
+			if (nr->natpass)
+				r = NULL;
+			pd->nat_rule = nr;
+		}
+	} else {
+		bport = nport = icmpid;
+		/* check incoming packet for BINAT/RDR */
+		if ((nr = pf_get_translation(pd, m, off, PF_IN, kif, &nsn,
+		    saddr, icmpid, daddr, icmpid, &pd->naddr, &nport)) !=
+		    NULL) {
+			PF_ACPY(&pd->baddr, daddr, af);
+			switch (af) {
+#ifdef INET
+			case AF_INET:
+				pf_change_a(&daddr->v4.s_addr,
+				    pd->ip_sum, pd->naddr.v4.s_addr, 0);
+				break;
+#endif /* INET */
+#ifdef INET6
+			case AF_INET6:
+				pf_change_a6(daddr, &pd->hdr.icmp6->icmp6_cksum,
+				    &pd->naddr, 0);
+				rewrite++;
+				break;
+#endif /* INET6 */
+			}
+			if (nr->natpass)
+				r = NULL;
+			pd->nat_rule = nr;
+		}
+	}
+
+	while (r != NULL) {
+		r->evaluations++;
+		if (pfi_kif_match(r->kif, kif) == r->ifnot)
+			r = r->skip[PF_SKIP_IFP].ptr;
+		else if (r->direction && r->direction != direction)
+			r = r->skip[PF_SKIP_DIR].ptr;
+		else if (r->af && r->af != af)
+			r = r->skip[PF_SKIP_AF].ptr;
+		else if (r->proto && r->proto != pd->proto)
+			r = r->skip[PF_SKIP_PROTO].ptr;
+		else if (PF_MISMATCHAW(&r->src.addr, saddr, af,
+		    r->src.neg, kif))
+			r = r->skip[PF_SKIP_SRC_ADDR].ptr;
+		else if (PF_MISMATCHAW(&r->dst.addr, daddr, af,
+		    r->dst.neg, NULL))
+			r = r->skip[PF_SKIP_DST_ADDR].ptr;
+		else if (r->type && r->type != icmptype + 1)
+			r = TAILQ_NEXT(r, entries);
+		else if (r->code && r->code != icmpcode + 1)
+			r = TAILQ_NEXT(r, entries);
+		else if (r->tos && !(r->tos == pd->tos))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->rule_flag & PFRULE_FRAGMENT)
+			r = TAILQ_NEXT(r, entries);
+		else if (r->prob && r->prob <= arc4random())
+			r = TAILQ_NEXT(r, entries);
+		else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->os_fingerprint != PF_OSFP_ANY)
+			r = TAILQ_NEXT(r, entries);
+		else {
+			if (r->tag)
+				tag = r->tag;
+			if (r->rtableid >= 0)
+				rtableid = r->rtableid;
+			if (r->anchor == NULL) {
+				match = 1;
+				*rm = r;
+				*am = a;
+				*rsm = ruleset;
+				if ((*rm)->quick)
+					break;
+				r = TAILQ_NEXT(r, entries);
+			} else
+				pf_step_into_anchor(&asd, &ruleset,
+				    PF_RULESET_FILTER, &r, &a, &match);
+		}
+		if (r == NULL && pf_step_out_of_anchor(&asd, &ruleset,
+		    PF_RULESET_FILTER, &r, &a, &match))
+			break;
+	}
+	r = *rm;
+	a = *am;
+	ruleset = *rsm;
+
+	REASON_SET(&reason, PFRES_MATCH);
+
+	if (r->log || (nr != NULL && nr->natpass && nr->log)) {
+#ifdef INET6
+		if (rewrite)
+			m_copyback(m, off, sizeof(struct icmp6_hdr),
+			    (caddr_t)pd->hdr.icmp6);
+#endif /* INET6 */
+		PFLOG_PACKET(kif, h, m, af, direction, reason, r->log ? r : nr,
+		    a, ruleset, pd);
+	}
+
+	if (r->action != PF_PASS)
+		return (PF_DROP);
+
+	if (pf_tag_packet(m, pd->pf_mtag, tag, rtableid)) {
+		REASON_SET(&reason, PFRES_MEMORY);
+		return (PF_DROP);
+	}
+
+	if (!state_icmp && (r->keep_state || nr != NULL)) {
+		/* create new state */
+		struct pf_state	*s = NULL;
+		struct pf_src_node *sn = NULL;
+
+		/* check maximums */
+		if (r->max_states && (r->states >= r->max_states)) {
+			pf_status.lcounters[LCNT_STATES]++;
+			REASON_SET(&reason, PFRES_MAXSTATES);
+			goto cleanup;
+		}
+		/* src node for filter rule */
+		if ((r->rule_flag & PFRULE_SRCTRACK ||
+		    r->rpool.opts & PF_POOL_STICKYADDR) &&
+		    pf_insert_src_node(&sn, r, saddr, af) != 0) {
+			REASON_SET(&reason, PFRES_SRCLIMIT);
+			goto cleanup;
+		}
+		/* src node for translation rule */
+		if (nr != NULL && (nr->rpool.opts & PF_POOL_STICKYADDR) &&
+		    ((direction == PF_OUT &&
+		    pf_insert_src_node(&nsn, nr, &pd->baddr, af) != 0) ||
+		    (pf_insert_src_node(&nsn, nr, saddr, af) != 0))) {
+			REASON_SET(&reason, PFRES_SRCLIMIT);
+			goto cleanup;
+		}
+		s = pool_get(&pf_state_pl, PR_NOWAIT);
+		if (s == NULL) {
+			REASON_SET(&reason, PFRES_MEMORY);
+cleanup:
+			if (sn != NULL && sn->states == 0 && sn->expire == 0) {
+				RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
+				pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+				pf_status.src_nodes--;
+				pool_put(&pf_src_tree_pl, sn);
+			}
+			if (nsn != sn && nsn != NULL && nsn->states == 0 &&
+			    nsn->expire == 0) {
+				RB_REMOVE(pf_src_tree, &tree_src_tracking, nsn);
+				pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+				pf_status.src_nodes--;
+				pool_put(&pf_src_tree_pl, nsn);
+			}
+			return (PF_DROP);
+		}
+		bzero(s, sizeof(*s));
+		s->rule.ptr = r;
+		s->nat_rule.ptr = nr;
+		s->anchor.ptr = a;
+		STATE_INC_COUNTERS(s);
+		if (r->allow_opts)
+			s->state_flags |= PFSTATE_ALLOWOPTS;
+ 		if (r->rule_flag & PFRULE_STATESLOPPY)
+			s->state_flags |= PFSTATE_SLOPPY;
+		s->log = r->log & PF_LOG_ALL;
+		if (nr != NULL)
+			s->log |= nr->log & PF_LOG_ALL;
+		s->proto = pd->proto;
+		s->direction = direction;
+		s->af = af;
+		if (direction == PF_OUT) {
+			PF_ACPY(&s->gwy.addr, saddr, af);
+			s->gwy.port = nport;
+			PF_ACPY(&s->ext.addr, daddr, af);
+			s->ext.port = 0;
+			if (nr != NULL) {
+				PF_ACPY(&s->lan.addr, &pd->baddr, af);
+				s->lan.port = bport;
+			} else {
+				PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
+				s->lan.port = s->gwy.port;
+			}
+		} else {
+			PF_ACPY(&s->lan.addr, daddr, af);
+			s->lan.port = nport;
+			PF_ACPY(&s->ext.addr, saddr, af);
+			s->ext.port = 0; 
+			if (nr != NULL) {
+				PF_ACPY(&s->gwy.addr, &pd->baddr, af);
+				s->gwy.port = bport;
+			} else {
+				PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
+				s->gwy.port = s->lan.port;
+			}
+		}
+		s->creation = time_second;
+		s->expire = time_second;
+		s->timeout = PFTM_ICMP_FIRST_PACKET;
+		pf_set_rt_ifp(s, saddr);
+		if (sn != NULL) {
+			s->src_node = sn;
+			s->src_node->states++;
+		}
+		if (nsn != NULL) {
+			PF_ACPY(&nsn->raddr, &pd->naddr, af);
+			s->nat_src_node = nsn;
+			s->nat_src_node->states++;
+		}
+		if (pf_insert_state(BOUND_IFACE(r, kif), s)) {
+			REASON_SET(&reason, PFRES_STATEINS);
+			pf_src_tree_remove_state(s);
+			STATE_DEC_COUNTERS(s);
+			pool_put(&pf_state_pl, s);
+			return (PF_DROP);
+		} else
+			*sm = s;
+		if (tag > 0) {
+			pf_tag_ref(tag);
+			s->tag = tag;
+		}
+	}
+
+#ifdef INET6
+	/* copy back packet headers if we performed IPv6 NAT operations */
+	if (rewrite)
+		m_copyback(m, off, sizeof(struct icmp6_hdr),
+		    (caddr_t)pd->hdr.icmp6);
+#endif /* INET6 */
+
+	return (PF_PASS);
+}
+
+int
+pf_test_other(struct pf_rule **rm, struct pf_state **sm, int direction,
+    struct pfi_kif *kif, struct mbuf *m, int off, void *h, struct pf_pdesc *pd,
+    struct pf_rule **am, struct pf_ruleset **rsm, struct ifqueue *ifq)
+{
+	struct pf_rule		*nr = NULL;
+	struct pf_rule		*r, *a = NULL;
+	struct pf_ruleset	*ruleset = NULL;
+	struct pf_src_node	*nsn = NULL;
+	struct pf_addr		*saddr = pd->src, *daddr = pd->dst;
+	sa_family_t		 af = pd->af;
+	u_short			 reason;
+	int			 tag = -1, rtableid = -1;
+	int			 asd = 0;
+	int			 match = 0;
+
+	if (pf_check_congestion(ifq)) {
+		REASON_SET(&reason, PFRES_CONGEST);
+		return (PF_DROP);
+	}
+
+	r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
+
+	if (direction == PF_OUT) {
+		/* check outgoing packet for BINAT/NAT */
+		if ((nr = pf_get_translation(pd, m, off, PF_OUT, kif, &nsn,
+		    saddr, 0, daddr, 0, &pd->naddr, NULL)) != NULL) {
+			PF_ACPY(&pd->baddr, saddr, af);
+			switch (af) {
+#ifdef INET
+			case AF_INET:
+				pf_change_a(&saddr->v4.s_addr, pd->ip_sum,
+				    pd->naddr.v4.s_addr, 0);
+				break;
+#endif /* INET */
+#ifdef INET6
+			case AF_INET6:
+				PF_ACPY(saddr, &pd->naddr, af);
+				break;
+#endif /* INET6 */
+			}
+			if (nr->natpass)
+				r = NULL;
+			pd->nat_rule = nr;
+		}
+	} else {
+		/* check incoming packet for BINAT/RDR */
+		if ((nr = pf_get_translation(pd, m, off, PF_IN, kif, &nsn,
+		    saddr, 0, daddr, 0, &pd->naddr, NULL)) != NULL) {
+			PF_ACPY(&pd->baddr, daddr, af);
+			switch (af) {
+#ifdef INET
+			case AF_INET:
+				pf_change_a(&daddr->v4.s_addr,
+				    pd->ip_sum, pd->naddr.v4.s_addr, 0);
+				break;
+#endif /* INET */
+#ifdef INET6
+			case AF_INET6:
+				PF_ACPY(daddr, &pd->naddr, af);
+				break;
+#endif /* INET6 */
+			}
+			if (nr->natpass)
+				r = NULL;
+			pd->nat_rule = nr;
+		}
+	}
+
+	while (r != NULL) {
+		r->evaluations++;
+		if (pfi_kif_match(r->kif, kif) == r->ifnot)
+			r = r->skip[PF_SKIP_IFP].ptr;
+		else if (r->direction && r->direction != direction)
+			r = r->skip[PF_SKIP_DIR].ptr;
+		else if (r->af && r->af != af)
+			r = r->skip[PF_SKIP_AF].ptr;
+		else if (r->proto && r->proto != pd->proto)
+			r = r->skip[PF_SKIP_PROTO].ptr;
+		else if (PF_MISMATCHAW(&r->src.addr, pd->src, af,
+		    r->src.neg, kif))
+			r = r->skip[PF_SKIP_SRC_ADDR].ptr;
+		else if (PF_MISMATCHAW(&r->dst.addr, pd->dst, af,
+		    r->dst.neg, NULL))
+			r = r->skip[PF_SKIP_DST_ADDR].ptr;
+		else if (r->tos && !(r->tos == pd->tos))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->rule_flag & PFRULE_FRAGMENT)
+			r = TAILQ_NEXT(r, entries);
+		else if (r->prob && r->prob <= arc4random())
+			r = TAILQ_NEXT(r, entries);
+		else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->os_fingerprint != PF_OSFP_ANY)
+			r = TAILQ_NEXT(r, entries);
+		else {
+			if (r->tag)
+				tag = r->tag;
+			if (r->rtableid >= 0)
+				rtableid = r->rtableid;
+			if (r->anchor == NULL) {
+				match = 1;
+				*rm = r;
+				*am = a;
+				*rsm = ruleset;
+				if ((*rm)->quick)
+					break;
+				r = TAILQ_NEXT(r, entries);
+			} else
+				pf_step_into_anchor(&asd, &ruleset,
+				    PF_RULESET_FILTER, &r, &a, &match);
+		}
+		if (r == NULL && pf_step_out_of_anchor(&asd, &ruleset,
+		    PF_RULESET_FILTER, &r, &a, &match))
+			break;
+	}
+	r = *rm;
+	a = *am;
+	ruleset = *rsm;
+
+	REASON_SET(&reason, PFRES_MATCH);
+
+	if (r->log || (nr != NULL && nr->natpass && nr->log))
+		PFLOG_PACKET(kif, h, m, af, direction, reason, r->log ? r : nr,
+		    a, ruleset, pd);
+
+	if ((r->action == PF_DROP) &&
+	    ((r->rule_flag & PFRULE_RETURNICMP) ||
+	    (r->rule_flag & PFRULE_RETURN))) {
+		struct pf_addr *a = NULL;
+
+		if (nr != NULL) {
+			if (direction == PF_OUT)
+				a = saddr;
+			else
+				a = daddr;
+		}
+		if (a != NULL) {
+			switch (af) {
+#ifdef INET
+			case AF_INET:
+				pf_change_a(&a->v4.s_addr, pd->ip_sum,
+				    pd->baddr.v4.s_addr, 0);
+				break;
+#endif /* INET */
+#ifdef INET6
+			case AF_INET6:
+				PF_ACPY(a, &pd->baddr, af);
+				break;
+#endif /* INET6 */
+			}
+		}
+		if ((af == AF_INET) && r->return_icmp)
+			pf_send_icmp(m, r->return_icmp >> 8,
+			    r->return_icmp & 255, af, r);
+		else if ((af == AF_INET6) && r->return_icmp6)
+			pf_send_icmp(m, r->return_icmp6 >> 8,
+			    r->return_icmp6 & 255, af, r);
+	}
+
+	if (r->action != PF_PASS)
+		return (PF_DROP);
+
+	if (pf_tag_packet(m, pd->pf_mtag, tag, rtableid)) {
+		REASON_SET(&reason, PFRES_MEMORY);
+		return (PF_DROP);
+	}
+
+	if (r->keep_state || nr != NULL) {
+		/* create new state */
+		struct pf_state	*s = NULL;
+		struct pf_src_node *sn = NULL;
+
+		/* check maximums */
+		if (r->max_states && (r->states >= r->max_states)) {
+			pf_status.lcounters[LCNT_STATES]++;
+			REASON_SET(&reason, PFRES_MAXSTATES);
+			goto cleanup;
+		}
+		/* src node for filter rule */
+		if ((r->rule_flag & PFRULE_SRCTRACK ||
+		    r->rpool.opts & PF_POOL_STICKYADDR) &&
+		    pf_insert_src_node(&sn, r, saddr, af) != 0) {
+			REASON_SET(&reason, PFRES_SRCLIMIT);
+			goto cleanup;
+		}
+		/* src node for translation rule */
+		if (nr != NULL && (nr->rpool.opts & PF_POOL_STICKYADDR) &&
+		    ((direction == PF_OUT &&
+		    pf_insert_src_node(&nsn, nr, &pd->baddr, af) != 0) ||
+		    (pf_insert_src_node(&nsn, nr, saddr, af) != 0))) {
+			REASON_SET(&reason, PFRES_SRCLIMIT);
+			goto cleanup;
+		}
+		s = pool_get(&pf_state_pl, PR_NOWAIT);
+		if (s == NULL) {
+			REASON_SET(&reason, PFRES_MEMORY);
+cleanup:
+			if (sn != NULL && sn->states == 0 && sn->expire == 0) {
+				RB_REMOVE(pf_src_tree, &tree_src_tracking, sn);
+				pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+				pf_status.src_nodes--;
+				pool_put(&pf_src_tree_pl, sn);
+			}
+			if (nsn != sn && nsn != NULL && nsn->states == 0 &&
+			    nsn->expire == 0) {
+				RB_REMOVE(pf_src_tree, &tree_src_tracking, nsn);
+				pf_status.scounters[SCNT_SRC_NODE_REMOVALS]++;
+				pf_status.src_nodes--;
+				pool_put(&pf_src_tree_pl, nsn);
+			}
+			return (PF_DROP);
+		}
+		bzero(s, sizeof(*s));
+		s->rule.ptr = r;
+		s->nat_rule.ptr = nr;
+		s->anchor.ptr = a;
+		STATE_INC_COUNTERS(s);
+		if (r->allow_opts)
+			s->state_flags |= PFSTATE_ALLOWOPTS;
+ 		if (r->rule_flag & PFRULE_STATESLOPPY)
+			s->state_flags |= PFSTATE_SLOPPY;
+		s->log = r->log & PF_LOG_ALL;
+		if (nr != NULL)
+			s->log |= nr->log & PF_LOG_ALL;
+		s->proto = pd->proto;
+		s->direction = direction;
+		s->af = af;
+		if (direction == PF_OUT) {
+			PF_ACPY(&s->gwy.addr, saddr, af);
+			PF_ACPY(&s->ext.addr, daddr, af);
+			if (nr != NULL)
+				PF_ACPY(&s->lan.addr, &pd->baddr, af);
+			else
+				PF_ACPY(&s->lan.addr, &s->gwy.addr, af);
+		} else {
+			PF_ACPY(&s->lan.addr, daddr, af);
+			PF_ACPY(&s->ext.addr, saddr, af);
+			if (nr != NULL)
+				PF_ACPY(&s->gwy.addr, &pd->baddr, af);
+			else
+				PF_ACPY(&s->gwy.addr, &s->lan.addr, af);
+		}
+		s->src.state = PFOTHERS_SINGLE;
+		s->dst.state = PFOTHERS_NO_TRAFFIC;
+		s->creation = time_second;
+		s->expire = time_second;
+		s->timeout = PFTM_OTHER_FIRST_PACKET;
+		pf_set_rt_ifp(s, saddr);
+		if (sn != NULL) {
+			s->src_node = sn;
+			s->src_node->states++;
+		}
+		if (nsn != NULL) {
+			PF_ACPY(&nsn->raddr, &pd->naddr, af);
+			s->nat_src_node = nsn;
+			s->nat_src_node->states++;
+		}
+		if (pf_insert_state(BOUND_IFACE(r, kif), s)) {
+			REASON_SET(&reason, PFRES_STATEINS);
+			pf_src_tree_remove_state(s);
+			STATE_DEC_COUNTERS(s);
+			pool_put(&pf_state_pl, s);
+			return (PF_DROP);
+		} else
+			*sm = s;
+		if (tag > 0) {
+			pf_tag_ref(tag);
+			s->tag = tag;
+		}
+	}
+
+	return (PF_PASS);
+}
+
+int
+pf_test_fragment(struct pf_rule **rm, int direction, struct pfi_kif *kif,
+    struct mbuf *m, void *h, struct pf_pdesc *pd, struct pf_rule **am,
+    struct pf_ruleset **rsm)
+{
+	struct pf_rule		*r, *a = NULL;
+	struct pf_ruleset	*ruleset = NULL;
+	sa_family_t		 af = pd->af;
+	u_short			 reason;
+	int			 tag = -1;
+	int			 asd = 0;
+	int			 match = 0;
+
+	r = TAILQ_FIRST(pf_main_ruleset.rules[PF_RULESET_FILTER].active.ptr);
+	while (r != NULL) {
+		r->evaluations++;
+		if (pfi_kif_match(r->kif, kif) == r->ifnot)
+			r = r->skip[PF_SKIP_IFP].ptr;
+		else if (r->direction && r->direction != direction)
+			r = r->skip[PF_SKIP_DIR].ptr;
+		else if (r->af && r->af != af)
+			r = r->skip[PF_SKIP_AF].ptr;
+		else if (r->proto && r->proto != pd->proto)
+			r = r->skip[PF_SKIP_PROTO].ptr;
+		else if (PF_MISMATCHAW(&r->src.addr, pd->src, af,
+		    r->src.neg, kif))
+			r = r->skip[PF_SKIP_SRC_ADDR].ptr;
+		else if (PF_MISMATCHAW(&r->dst.addr, pd->dst, af,
+		    r->dst.neg, NULL))
+			r = r->skip[PF_SKIP_DST_ADDR].ptr;
+		else if (r->tos && !(r->tos == pd->tos))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->os_fingerprint != PF_OSFP_ANY)
+			r = TAILQ_NEXT(r, entries);
+		else if (pd->proto == IPPROTO_UDP &&
+		    (r->src.port_op || r->dst.port_op))
+			r = TAILQ_NEXT(r, entries);
+		else if (pd->proto == IPPROTO_TCP &&
+		    (r->src.port_op || r->dst.port_op || r->flagset))
+			r = TAILQ_NEXT(r, entries);
+		else if ((pd->proto == IPPROTO_ICMP ||
+		    pd->proto == IPPROTO_ICMPV6) &&
+		    (r->type || r->code))
+			r = TAILQ_NEXT(r, entries);
+		else if (r->prob && r->prob <= arc4random())
+			r = TAILQ_NEXT(r, entries);
+		else if (r->match_tag && !pf_match_tag(m, r, pd->pf_mtag, &tag))
+			r = TAILQ_NEXT(r, entries);
+		else {
+			if (r->anchor == NULL) {
+				match = 1;
+				*rm = r;
+				*am = a;
+				*rsm = ruleset;
+				if ((*rm)->quick)
+					break;
+				r = TAILQ_NEXT(r, entries);
+			} else
+				pf_step_into_anchor(&asd, &ruleset,
+				    PF_RULESET_FILTER, &r, &a, &match);
+		}
+		if (r == NULL && pf_step_out_of_anchor(&asd, &ruleset,
+		    PF_RULESET_FILTER, &r, &a, &match))
+			break;
+	}
+	r = *rm;
+	a = *am;
+	ruleset = *rsm;
+
+	REASON_SET(&reason, PFRES_MATCH);
+
+	if (r->log)
+		PFLOG_PACKET(kif, h, m, af, direction, reason, r, a, ruleset,
+		    pd);
+
+	if (r->action != PF_PASS)
+		return (PF_DROP);
+
+	if (pf_tag_packet(m, pd->pf_mtag, tag, -1)) {
+		REASON_SET(&reason, PFRES_MEMORY);
+		return (PF_DROP);
+	}
+
+	return (PF_PASS);
+}
+
+int
+pf_tcp_track_full(struct pf_state_peer *src, struct pf_state_peer *dst,
+	struct pf_state **state, struct pfi_kif *kif, struct mbuf *m, int off,
+	struct pf_pdesc *pd, u_short *reason, int *copyback)
+{
+ 	struct tcphdr		*th = pd->hdr.tcp;
+ 	u_int16_t		 win = ntohs(th->th_win);
+ 	u_int32_t		 ack, end, seq, orig_seq;
+ 	u_int8_t		 sws, dws;
+ 	int			 ackskew;
+
+	if (src->wscale && dst->wscale && !(th->th_flags & TH_SYN)) {
+		sws = src->wscale & PF_WSCALE_MASK;
+		dws = dst->wscale & PF_WSCALE_MASK;
+	} else
+		sws = dws = 0;
+
+	/*
+	 * Sequence tracking algorithm from Guido van Rooij's paper:
+	 *   http://www.madison-gurkha.com/publications/tcp_filtering/
+	 *	tcp_filtering.ps
+	 */
+
+	orig_seq = seq = ntohl(th->th_seq);
+	if (src->seqlo == 0) {
+		/* First packet from this end. Set its state */
+
+		if ((pd->flags & PFDESC_TCP_NORM || dst->scrub) &&
+		    src->scrub == NULL) {
+			if (pf_normalize_tcp_init(m, off, pd, th, src, dst)) {
+				REASON_SET(reason, PFRES_MEMORY);
+				return (PF_DROP);
+			}
+		}
+
+		/* Deferred generation of sequence number modulator */
+		if (dst->seqdiff && !src->seqdiff) {
+#ifdef __FreeBSD__
+			while ((src->seqdiff = pf_new_isn(*state) - seq) == 0)
+				;
+#else
+			while ((src->seqdiff = tcp_rndiss_next() - seq) == 0)
+				;
+#endif
+			ack = ntohl(th->th_ack) - dst->seqdiff;
+			pf_change_a(&th->th_seq, &th->th_sum, htonl(seq +
+			    src->seqdiff), 0);
+			pf_change_a(&th->th_ack, &th->th_sum, htonl(ack), 0);
+			*copyback = 1;
+		} else {
+			ack = ntohl(th->th_ack);
+		}
+
+		end = seq + pd->p_len;
+		if (th->th_flags & TH_SYN) {
+			end++;
+			if (dst->wscale & PF_WSCALE_FLAG) {
+				src->wscale = pf_get_wscale(m, off, th->th_off,
+				    pd->af);
+				if (src->wscale & PF_WSCALE_FLAG) {
+					/* Remove scale factor from initial
+					 * window */
+					sws = src->wscale & PF_WSCALE_MASK;
+					win = ((u_int32_t)win + (1 << sws) - 1)
+					    >> sws;
+					dws = dst->wscale & PF_WSCALE_MASK;
+				} else {
+					/* fixup other window */
+					dst->max_win <<= dst->wscale &
+					    PF_WSCALE_MASK;
+					/* in case of a retrans SYN|ACK */
+					dst->wscale = 0;
+				}
+			}
+		}
+		if (th->th_flags & TH_FIN)
+			end++;
+
+		src->seqlo = seq;
+		if (src->state < TCPS_SYN_SENT)
+			src->state = TCPS_SYN_SENT;
+
+		/*
+		 * May need to slide the window (seqhi may have been set by
+		 * the crappy stack check or if we picked up the connection
+		 * after establishment)
+		 */
+		if (src->seqhi == 1 ||
+		    SEQ_GEQ(end + MAX(1, dst->max_win << dws), src->seqhi))
+			src->seqhi = end + MAX(1, dst->max_win << dws);
+		if (win > src->max_win)
+			src->max_win = win;
+
+	} else {
+		ack = ntohl(th->th_ack) - dst->seqdiff;
+		if (src->seqdiff) {
+			/* Modulate sequence numbers */
+			pf_change_a(&th->th_seq, &th->th_sum, htonl(seq +
+			    src->seqdiff), 0);
+			pf_change_a(&th->th_ack, &th->th_sum, htonl(ack), 0);
+			*copyback = 1;
+		}
+		end = seq + pd->p_len;
+		if (th->th_flags & TH_SYN)
+			end++;
+		if (th->th_flags & TH_FIN)
+			end++;
+	}
+
+	if ((th->th_flags & TH_ACK) == 0) {
+		/* Let it pass through the ack skew check */
+		ack = dst->seqlo;
+	} else if ((ack == 0 &&
+	    (th->th_flags & (TH_ACK|TH_RST)) == (TH_ACK|TH_RST)) ||
+	    /* broken tcp stacks do not set ack */
+	    (dst->state < TCPS_SYN_SENT)) {
+		/*
+		 * Many stacks (ours included) will set the ACK number in an
+		 * FIN|ACK if the SYN times out -- no sequence to ACK.
+		 */
+		ack = dst->seqlo;
+	}
+
+	if (seq == end) {
+		/* Ease sequencing restrictions on no data packets */
+		seq = src->seqlo;
+		end = seq;
+	}
+
+	ackskew = dst->seqlo - ack;
+
+
+	/*
+	 * Need to demodulate the sequence numbers in any TCP SACK options
+	 * (Selective ACK). We could optionally validate the SACK values
+	 * against the current ACK window, either forwards or backwards, but
+	 * I'm not confident that SACK has been implemented properly
+	 * everywhere. It wouldn't surprise me if several stacks accidently
+	 * SACK too far backwards of previously ACKed data. There really aren't
+	 * any security implications of bad SACKing unless the target stack
+	 * doesn't validate the option length correctly. Someone trying to
+	 * spoof into a TCP connection won't bother blindly sending SACK
+	 * options anyway.
+	 */
+	if (dst->seqdiff && (th->th_off << 2) > sizeof(struct tcphdr)) {
+		if (pf_modulate_sack(m, off, pd, th, dst))
+			*copyback = 1;
+	}
+
+
+#define MAXACKWINDOW (0xffff + 1500)	/* 1500 is an arbitrary fudge factor */
+	if (SEQ_GEQ(src->seqhi, end) &&
+	    /* Last octet inside other's window space */
+	    SEQ_GEQ(seq, src->seqlo - (dst->max_win << dws)) &&
+	    /* Retrans: not more than one window back */
+	    (ackskew >= -MAXACKWINDOW) &&
+	    /* Acking not more than one reassembled fragment backwards */
+	    (ackskew <= (MAXACKWINDOW << sws)) &&
+	    /* Acking not more than one window forward */
+	    ((th->th_flags & TH_RST) == 0 || orig_seq == src->seqlo ||
+	    (orig_seq == src->seqlo + 1) || (pd->flags & PFDESC_IP_REAS) == 0)) {
+	    /* Require an exact/+1 sequence match on resets when possible */
+
+		if (dst->scrub || src->scrub) {
+			if (pf_normalize_tcp_stateful(m, off, pd, reason, th,
+			    *state, src, dst, copyback))
+				return (PF_DROP);
+		}
+
+		/* update max window */
+		if (src->max_win < win)
+			src->max_win = win;
+		/* synchronize sequencing */
+		if (SEQ_GT(end, src->seqlo))
+			src->seqlo = end;
+		/* slide the window of what the other end can send */
+		if (SEQ_GEQ(ack + (win << sws), dst->seqhi))
+			dst->seqhi = ack + MAX((win << sws), 1);
+
+
+		/* update states */
+		if (th->th_flags & TH_SYN)
+			if (src->state < TCPS_SYN_SENT)
+				src->state = TCPS_SYN_SENT;
+		if (th->th_flags & TH_FIN)
+			if (src->state < TCPS_CLOSING)
+				src->state = TCPS_CLOSING;
+		if (th->th_flags & TH_ACK) {
+			if (dst->state == TCPS_SYN_SENT) {
+				dst->state = TCPS_ESTABLISHED;
+				if (src->state == TCPS_ESTABLISHED &&
+				    (*state)->src_node != NULL &&
+				    pf_src_connlimit(state)) {
+					REASON_SET(reason, PFRES_SRCLIMIT);
+					return (PF_DROP);
+				}
+			} else if (dst->state == TCPS_CLOSING)
+				dst->state = TCPS_FIN_WAIT_2;
+		}
+		if (th->th_flags & TH_RST)
+			src->state = dst->state = TCPS_TIME_WAIT;
+
+		/* update expire time */
+		(*state)->expire = time_second;
+		if (src->state >= TCPS_FIN_WAIT_2 &&
+		    dst->state >= TCPS_FIN_WAIT_2)
+			(*state)->timeout = PFTM_TCP_CLOSED;
+		else if (src->state >= TCPS_CLOSING &&
+		    dst->state >= TCPS_CLOSING)
+			(*state)->timeout = PFTM_TCP_FIN_WAIT;
+		else if (src->state < TCPS_ESTABLISHED ||
+		    dst->state < TCPS_ESTABLISHED)
+			(*state)->timeout = PFTM_TCP_OPENING;
+		else if (src->state >= TCPS_CLOSING ||
+		    dst->state >= TCPS_CLOSING)
+			(*state)->timeout = PFTM_TCP_CLOSING;
+		else
+			(*state)->timeout = PFTM_TCP_ESTABLISHED;
+
+		/* Fall through to PASS packet */
+
+	} else if ((dst->state < TCPS_SYN_SENT ||
+		dst->state >= TCPS_FIN_WAIT_2 ||
+		src->state >= TCPS_FIN_WAIT_2) &&
+	    SEQ_GEQ(src->seqhi + MAXACKWINDOW, end) &&
+	    /* Within a window forward of the originating packet */
+	    SEQ_GEQ(seq, src->seqlo - MAXACKWINDOW)) {
+	    /* Within a window backward of the originating packet */
+
+		/*
+		 * This currently handles three situations:
+		 *  1) Stupid stacks will shotgun SYNs before their peer
+		 *     replies.
+		 *  2) When PF catches an already established stream (the
+		 *     firewall rebooted, the state table was flushed, routes
+		 *     changed...)
+		 *  3) Packets get funky immediately after the connection
+		 *     closes (this should catch Solaris spurious ACK|FINs
+		 *     that web servers like to spew after a close)
+		 *
+		 * This must be a little more careful than the above code
+		 * since packet floods will also be caught here. We don't
+		 * update the TTL here to mitigate the damage of a packet
+		 * flood and so the same code can handle awkward establishment
+		 * and a loosened connection close.
+		 * In the establishment case, a correct peer response will
+		 * validate the connection, go through the normal state code
+		 * and keep updating the state TTL.
+		 */
+
+		if (pf_status.debug >= PF_DEBUG_MISC) {
+			printf("pf: loose state match: ");
+			pf_print_state(*state);
+			pf_print_flags(th->th_flags);
+			printf(" seq=%u (%u) ack=%u len=%u ackskew=%d "
+			    "pkts=%llu:%llu\n", seq, orig_seq, ack, pd->p_len,
+#ifdef __FreeBSD__
+			    ackskew, (unsigned long long)(*state)->packets[0],
+			    (unsigned long long)(*state)->packets[1]);
+#else
+			    ackskew, (*state)->packets[0],
+			    (*state)->packets[1]);
+#endif
+		}
+
+		if (dst->scrub || src->scrub) {
+			if (pf_normalize_tcp_stateful(m, off, pd, reason, th,
+			    *state, src, dst, copyback))
+				return (PF_DROP);
+		}
+
+		/* update max window */
+		if (src->max_win < win)
+			src->max_win = win;
+		/* synchronize sequencing */
+		if (SEQ_GT(end, src->seqlo))
+			src->seqlo = end;
+		/* slide the window of what the other end can send */
+		if (SEQ_GEQ(ack + (win << sws), dst->seqhi))
+			dst->seqhi = ack + MAX((win << sws), 1);
+
+		/*
+		 * Cannot set dst->seqhi here since this could be a shotgunned
+		 * SYN and not an already established connection.
+		 */
+
+		if (th->th_flags & TH_FIN)
+			if (src->state < TCPS_CLOSING)
+				src->state = TCPS_CLOSING;
+		if (th->th_flags & TH_RST)
+			src->state = dst->state = TCPS_TIME_WAIT;
+
+		/* Fall through to PASS packet */
+
+	} else {
+		if ((*state)->dst.state == TCPS_SYN_SENT &&
+		    (*state)->src.state == TCPS_SYN_SENT) {
+			/* Send RST for state mismatches during handshake */
+			if (!(th->th_flags & TH_RST))
+#ifdef __FreeBSD__
+				pf_send_tcp(m, (*state)->rule.ptr, pd->af,
+#else
+				pf_send_tcp((*state)->rule.ptr, pd->af,
+#endif
+				    pd->dst, pd->src, th->th_dport,
+				    th->th_sport, ntohl(th->th_ack), 0,
+				    TH_RST, 0, 0,
+				    (*state)->rule.ptr->return_ttl, 1, 0,
+				    pd->eh, kif->pfik_ifp);
+			src->seqlo = 0;
+			src->seqhi = 1;
+			src->max_win = 1;
+		} else if (pf_status.debug >= PF_DEBUG_MISC) {
+			printf("pf: BAD state: ");
+			pf_print_state(*state);
+			pf_print_flags(th->th_flags);
+			printf(" seq=%u (%u) ack=%u len=%u ackskew=%d "
+#ifdef notyet
+			    "pkts=%llu:%llu dir=%s,%s\n",
+#else
+			    "pkts=%llu:%llu%s\n",
+#endif
+			    seq, orig_seq, ack, pd->p_len, ackskew,
+#ifdef __FreeBSD__
+			    (unsigned long long)(*state)->packets[0],
+			    (unsigned long long)(*state)->packets[1],
+#else
+			    (*state)->packets[0], (*state)->packets[1],
+#endif
+#ifdef notyet
+			    direction == PF_IN ? "in" : "out",
+			    direction == (*state)->direction ? "fwd" : "rev");
+#else
+			    "");
+#endif
+			printf("pf: State failure on: %c %c %c %c | %c %c\n",
+			    SEQ_GEQ(src->seqhi, end) ? ' ' : '1',
+			    SEQ_GEQ(seq, src->seqlo - (dst->max_win << dws)) ?
+			    ' ': '2',
+			    (ackskew >= -MAXACKWINDOW) ? ' ' : '3',
+			    (ackskew <= (MAXACKWINDOW << sws)) ? ' ' : '4',
+			    SEQ_GEQ(src->seqhi + MAXACKWINDOW, end) ?' ' :'5',
+			    SEQ_GEQ(seq, src->seqlo - MAXACKWINDOW) ?' ' :'6');
+		}
+		REASON_SET(reason, PFRES_BADSTATE);
+		return (PF_DROP);
+	}
+
+	/* Any packets which have gotten here are to be passed */
+	return (PF_PASS);
+}
+
+int
+pf_tcp_track_sloppy(struct pf_state_peer *src, struct pf_state_peer *dst,
+	struct pf_state **state, struct pf_pdesc *pd, u_short *reason)
+{
+	struct tcphdr		*th = pd->hdr.tcp;
+
+	if (th->th_flags & TH_SYN)
+		if (src->state < TCPS_SYN_SENT)
+			src->state = TCPS_SYN_SENT;
+	if (th->th_flags & TH_FIN)
+		if (src->state < TCPS_CLOSING)
+			src->state = TCPS_CLOSING;
+	if (th->th_flags & TH_ACK) {
+		if (dst->state == TCPS_SYN_SENT) {
+			dst->state = TCPS_ESTABLISHED;
+			if (src->state == TCPS_ESTABLISHED &&
+			    (*state)->src_node != NULL &&
+			    pf_src_connlimit(state)) {
+				REASON_SET(reason, PFRES_SRCLIMIT);
+				return (PF_DROP);
+			}
+		} else if (dst->state == TCPS_CLOSING) {
+			dst->state = TCPS_FIN_WAIT_2;
+		} else if (src->state == TCPS_SYN_SENT &&
+		    dst->state < TCPS_SYN_SENT) {
+			/*
+			 * Handle a special sloppy case where we only see one
+			 * half of the connection. If there is a ACK after
+			 * the initial SYN without ever seeing a packet from
+			 * the destination, set the connection to established.
+			 */
+			dst->state = src->state = TCPS_ESTABLISHED;
+			if ((*state)->src_node != NULL &&
+			    pf_src_connlimit(state)) {
+				REASON_SET(reason, PFRES_SRCLIMIT);
+				return (PF_DROP);
+			}
+		} else if (src->state == TCPS_CLOSING &&
+		    dst->state == TCPS_ESTABLISHED &&
+		    dst->seqlo == 0) {
+			/*
+			 * Handle the closing of half connections where we
+			 * don't see the full bidirectional FIN/ACK+ACK
+			 * handshake.
+			 */
+			dst->state = TCPS_CLOSING;
+		}
+	}
+	if (th->th_flags & TH_RST)
+		src->state = dst->state = TCPS_TIME_WAIT;
+
+	/* update expire time */
+	(*state)->expire = time_second;
+	if (src->state >= TCPS_FIN_WAIT_2 &&
+	    dst->state >= TCPS_FIN_WAIT_2)
+		(*state)->timeout = PFTM_TCP_CLOSED;
+	else if (src->state >= TCPS_CLOSING &&
+	    dst->state >= TCPS_CLOSING)
+		(*state)->timeout = PFTM_TCP_FIN_WAIT;
+	else if (src->state < TCPS_ESTABLISHED ||
+	    dst->state < TCPS_ESTABLISHED)
+		(*state)->timeout = PFTM_TCP_OPENING;
+	else if (src->state >= TCPS_CLOSING ||
+	    dst->state >= TCPS_CLOSING)
+		(*state)->timeout = PFTM_TCP_CLOSING;
+	else
+		(*state)->timeout = PFTM_TCP_ESTABLISHED;
+
+	return (PF_PASS);
+}
+
+
+int
+pf_test_state_tcp(struct pf_state **state, int direction, struct pfi_kif *kif,
+    struct mbuf *m, int off, void *h, struct pf_pdesc *pd,
+    u_short *reason)
+{
+	struct pf_state_cmp	 key;
+	struct tcphdr		*th = pd->hdr.tcp;
+	int			 copyback = 0;
+	struct pf_state_peer	*src, *dst;
+
+	key.af = pd->af;
+	key.proto = IPPROTO_TCP;
+	if (direction == PF_IN)	{
+		PF_ACPY(&key.ext.addr, pd->src, key.af);
+		PF_ACPY(&key.gwy.addr, pd->dst, key.af);
+		key.ext.port = th->th_sport;
+		key.gwy.port = th->th_dport;
+	} else {
+		PF_ACPY(&key.lan.addr, pd->src, key.af);
+		PF_ACPY(&key.ext.addr, pd->dst, key.af);
+		key.lan.port = th->th_sport;
+		key.ext.port = th->th_dport;
+	}
+
+	STATE_LOOKUP();
+
+	if (direction == (*state)->direction) {
+		src = &(*state)->src;
+		dst = &(*state)->dst;
+	} else {
+		src = &(*state)->dst;
+		dst = &(*state)->src;
+	}
+
+	if ((*state)->src.state == PF_TCPS_PROXY_SRC) {
+		if (direction != (*state)->direction) {
+			REASON_SET(reason, PFRES_SYNPROXY);
+			return (PF_SYNPROXY_DROP);
+		}
+		if (th->th_flags & TH_SYN) {
+			if (ntohl(th->th_seq) != (*state)->src.seqlo) {
+				REASON_SET(reason, PFRES_SYNPROXY);
+				return (PF_DROP);
+			}
+#ifdef __FreeBSD__
+			pf_send_tcp(NULL, (*state)->rule.ptr, pd->af, pd->dst,
+#else
+			pf_send_tcp((*state)->rule.ptr, pd->af, pd->dst,
+#endif
+			    pd->src, th->th_dport, th->th_sport,
+			    (*state)->src.seqhi, ntohl(th->th_seq) + 1,
+			    TH_SYN|TH_ACK, 0, (*state)->src.mss, 0, 1,
+			    0, NULL, NULL);
+			REASON_SET(reason, PFRES_SYNPROXY);
+			return (PF_SYNPROXY_DROP);
+		} else if (!(th->th_flags & TH_ACK) ||
+		    (ntohl(th->th_ack) != (*state)->src.seqhi + 1) ||
+		    (ntohl(th->th_seq) != (*state)->src.seqlo + 1)) {
+			REASON_SET(reason, PFRES_SYNPROXY);
+			return (PF_DROP);
+		} else if ((*state)->src_node != NULL &&
+		    pf_src_connlimit(state)) {
+			REASON_SET(reason, PFRES_SRCLIMIT);
+			return (PF_DROP);
+		} else
+			(*state)->src.state = PF_TCPS_PROXY_DST;
+	}
+	if ((*state)->src.state == PF_TCPS_PROXY_DST) {
+		struct pf_state_host *src, *dst;
+
+		if (direction == PF_OUT) {
+			src = &(*state)->gwy;
+			dst = &(*state)->ext;
+		} else {
+			src = &(*state)->ext;
+			dst = &(*state)->lan;
+		}
+		if (direction == (*state)->direction) {
+			if (((th->th_flags & (TH_SYN|TH_ACK)) != TH_ACK) ||
+			    (ntohl(th->th_ack) != (*state)->src.seqhi + 1) ||
+			    (ntohl(th->th_seq) != (*state)->src.seqlo + 1)) {
+				REASON_SET(reason, PFRES_SYNPROXY);
+				return (PF_DROP);
+			}
+			(*state)->src.max_win = MAX(ntohs(th->th_win), 1);
+			if ((*state)->dst.seqhi == 1)
+				(*state)->dst.seqhi = htonl(arc4random());
+#ifdef __FreeBSD__
+			pf_send_tcp(NULL, (*state)->rule.ptr, pd->af,
+			    &src->addr,
+#else
+			pf_send_tcp((*state)->rule.ptr, pd->af, &src->addr,
+#endif
+			    &dst->addr, src->port, dst->port,
+			    (*state)->dst.seqhi, 0, TH_SYN, 0,
+			    (*state)->src.mss, 0, 0, (*state)->tag, NULL, NULL);
+			REASON_SET(reason, PFRES_SYNPROXY);
+			return (PF_SYNPROXY_DROP);
+		} else if (((th->th_flags & (TH_SYN|TH_ACK)) !=
+		    (TH_SYN|TH_ACK)) ||
+		    (ntohl(th->th_ack) != (*state)->dst.seqhi + 1)) {
+			REASON_SET(reason, PFRES_SYNPROXY);
+			return (PF_DROP);
+		} else {
+			(*state)->dst.max_win = MAX(ntohs(th->th_win), 1);
+			(*state)->dst.seqlo = ntohl(th->th_seq);
+#ifdef __FreeBSD__
+			pf_send_tcp(NULL, (*state)->rule.ptr, pd->af, pd->dst,
+#else
+			pf_send_tcp((*state)->rule.ptr, pd->af, pd->dst,
+#endif
+			    pd->src, th->th_dport, th->th_sport,
+			    ntohl(th->th_ack), ntohl(th->th_seq) + 1,
+			    TH_ACK, (*state)->src.max_win, 0, 0, 0,
+			    (*state)->tag, NULL, NULL);
+#ifdef __FreeBSD__
+			pf_send_tcp(NULL, (*state)->rule.ptr, pd->af,
+			    &src->addr,
+#else
+			pf_send_tcp((*state)->rule.ptr, pd->af, &src->addr,
+#endif
+			    &dst->addr, src->port, dst->port,
+			    (*state)->src.seqhi + 1, (*state)->src.seqlo + 1,
+			    TH_ACK, (*state)->dst.max_win, 0, 0, 1,
+			    0, NULL, NULL);
+			(*state)->src.seqdiff = (*state)->dst.seqhi -
+			    (*state)->src.seqlo;
+			(*state)->dst.seqdiff = (*state)->src.seqhi -
+			    (*state)->dst.seqlo;
+			(*state)->src.seqhi = (*state)->src.seqlo +
+			    (*state)->dst.max_win;
+			(*state)->dst.seqhi = (*state)->dst.seqlo +
+			    (*state)->src.max_win;
+			(*state)->src.wscale = (*state)->dst.wscale = 0;
+			(*state)->src.state = (*state)->dst.state =
+			    TCPS_ESTABLISHED;
+			REASON_SET(reason, PFRES_SYNPROXY);
+			return (PF_SYNPROXY_DROP);
+		}
+	}
+
+	if (((th->th_flags & (TH_SYN|TH_ACK)) == TH_SYN) &&
+	    dst->state >= TCPS_FIN_WAIT_2 &&
+	    src->state >= TCPS_FIN_WAIT_2) {
+		if (pf_status.debug >= PF_DEBUG_MISC) {
+			printf("pf: state reuse ");
+			pf_print_state(*state);
+			pf_print_flags(th->th_flags);
+			printf("\n");
+		}
+		/* XXX make sure it's the same direction ?? */
+		(*state)->src.state = (*state)->dst.state = TCPS_CLOSED;
+		pf_unlink_state(*state);
+		*state = NULL;
+		return (PF_DROP);
+	}
+
+	if ((*state)->state_flags & PFSTATE_SLOPPY) {
+		if (pf_tcp_track_sloppy(src, dst, state, pd, reason) == PF_DROP)
+			return (PF_DROP);
+	} else {
+		if (pf_tcp_track_full(src, dst, state, kif, m, off, pd, reason,
+		    &copyback) == PF_DROP)
+			return (PF_DROP);
+	}
+
+	/* translate source/destination address, if necessary */
+	if (STATE_TRANSLATE(*state)) {
+		if (direction == PF_OUT)
+			pf_change_ap(pd->src, &th->th_sport, pd->ip_sum,
+			    &th->th_sum, &(*state)->gwy.addr,
+			    (*state)->gwy.port, 0, pd->af);
+		else
+			pf_change_ap(pd->dst, &th->th_dport, pd->ip_sum,
+			    &th->th_sum, &(*state)->lan.addr,
+			    (*state)->lan.port, 0, pd->af);
+		m_copyback(m, off, sizeof(*th), (caddr_t)th);
+	} else if (copyback) {
+		/* Copyback sequence modulation or stateful scrub changes */
+		m_copyback(m, off, sizeof(*th), (caddr_t)th);
+	}
+
+	return (PF_PASS);
+}
+
+int
+pf_test_state_udp(struct pf_state **state, int direction, struct pfi_kif *kif,
+    struct mbuf *m, int off, void *h, struct pf_pdesc *pd)
+{
+	struct pf_state_peer	*src, *dst;
+	struct pf_state_cmp	 key;
+	struct udphdr		*uh = pd->hdr.udp;
+
+	key.af = pd->af;
+	key.proto = IPPROTO_UDP;
+	if (direction == PF_IN)	{
+		PF_ACPY(&key.ext.addr, pd->src, key.af);
+		PF_ACPY(&key.gwy.addr, pd->dst, key.af);
+		key.ext.port = uh->uh_sport;
+		key.gwy.port = uh->uh_dport;
+	} else {
+		PF_ACPY(&key.lan.addr, pd->src, key.af);
+		PF_ACPY(&key.ext.addr, pd->dst, key.af);
+		key.lan.port = uh->uh_sport;
+		key.ext.port = uh->uh_dport;
+	}
+
+	STATE_LOOKUP();
+
+	if (direction == (*state)->direction) {
+		src = &(*state)->src;
+		dst = &(*state)->dst;
+	} else {
+		src = &(*state)->dst;
+		dst = &(*state)->src;
+	}
+
+	/* update states */
+	if (src->state < PFUDPS_SINGLE)
+		src->state = PFUDPS_SINGLE;
+	if (dst->state == PFUDPS_SINGLE)
+		dst->state = PFUDPS_MULTIPLE;
+
+	/* update expire time */
+	(*state)->expire = time_second;
+	if (src->state == PFUDPS_MULTIPLE && dst->state == PFUDPS_MULTIPLE)
+		(*state)->timeout = PFTM_UDP_MULTIPLE;
+	else
+		(*state)->timeout = PFTM_UDP_SINGLE;
+
+	/* translate source/destination address, if necessary */
+	if (STATE_TRANSLATE(*state)) {
+		if (direction == PF_OUT)
+			pf_change_ap(pd->src, &uh->uh_sport, pd->ip_sum,
+			    &uh->uh_sum, &(*state)->gwy.addr,
+			    (*state)->gwy.port, 1, pd->af);
+		else
+			pf_change_ap(pd->dst, &uh->uh_dport, pd->ip_sum,
+			    &uh->uh_sum, &(*state)->lan.addr,
+			    (*state)->lan.port, 1, pd->af);
+		m_copyback(m, off, sizeof(*uh), (caddr_t)uh);
+	}
+
+	return (PF_PASS);
+}
+
+int
+pf_test_state_icmp(struct pf_state **state, int direction, struct pfi_kif *kif,
+    struct mbuf *m, int off, void *h, struct pf_pdesc *pd, u_short *reason)
+{
+	struct pf_addr	*saddr = pd->src, *daddr = pd->dst;
+	u_int16_t	 icmpid = 0;		/* make the compiler happy */
+	u_int16_t	*icmpsum = NULL;	/* make the compiler happy */
+	u_int8_t	 icmptype = 0;		/* make the compiler happy */
+	int		 state_icmp = 0;
+	struct pf_state_cmp key;
+
+	switch (pd->proto) {
+#ifdef INET
+	case IPPROTO_ICMP:
+		icmptype = pd->hdr.icmp->icmp_type;
+		icmpid = pd->hdr.icmp->icmp_id;
+		icmpsum = &pd->hdr.icmp->icmp_cksum;
+
+		if (icmptype == ICMP_UNREACH ||
+		    icmptype == ICMP_SOURCEQUENCH ||
+		    icmptype == ICMP_REDIRECT ||
+		    icmptype == ICMP_TIMXCEED ||
+		    icmptype == ICMP_PARAMPROB)
+			state_icmp++;
+		break;
+#endif /* INET */
+#ifdef INET6
+	case IPPROTO_ICMPV6:
+		icmptype = pd->hdr.icmp6->icmp6_type;
+		icmpid = pd->hdr.icmp6->icmp6_id;
+		icmpsum = &pd->hdr.icmp6->icmp6_cksum;
+
+		if (icmptype == ICMP6_DST_UNREACH ||
+		    icmptype == ICMP6_PACKET_TOO_BIG ||
+		    icmptype == ICMP6_TIME_EXCEEDED ||
+		    icmptype == ICMP6_PARAM_PROB)
+			state_icmp++;
+		break;
+#endif /* INET6 */
+	}
+
+	if (!state_icmp) {
+
+		/*
+		 * ICMP query/reply message not related to a TCP/UDP packet.
+		 * Search for an ICMP state.
+		 */
+		key.af = pd->af;
+		key.proto = pd->proto;
+		if (direction == PF_IN)	{
+			PF_ACPY(&key.ext.addr, pd->src, key.af);
+			PF_ACPY(&key.gwy.addr, pd->dst, key.af);
+			key.ext.port = 0;
+			key.gwy.port = icmpid;
+		} else {
+			PF_ACPY(&key.lan.addr, pd->src, key.af);
+			PF_ACPY(&key.ext.addr, pd->dst, key.af);
+			key.lan.port = icmpid;
+			key.ext.port = 0;
+		}
+
+		STATE_LOOKUP();
+
+		(*state)->expire = time_second;
+		(*state)->timeout = PFTM_ICMP_ERROR_REPLY;
+
+		/* translate source/destination address, if necessary */
+		if (STATE_TRANSLATE(*state)) {
+			if (direction == PF_OUT) {
+				switch (pd->af) {
+#ifdef INET
+				case AF_INET:
+					pf_change_a(&saddr->v4.s_addr,
+					    pd->ip_sum,
+					    (*state)->gwy.addr.v4.s_addr, 0);
+					pd->hdr.icmp->icmp_cksum =
+					    pf_cksum_fixup(
+					    pd->hdr.icmp->icmp_cksum, icmpid,
+					    (*state)->gwy.port, 0);
+					pd->hdr.icmp->icmp_id =
+					    (*state)->gwy.port;
+					m_copyback(m, off, ICMP_MINLEN,
+					    (caddr_t)pd->hdr.icmp);
+					break;
+#endif /* INET */
+#ifdef INET6
+				case AF_INET6:
+					pf_change_a6(saddr,
+					    &pd->hdr.icmp6->icmp6_cksum,
+					    &(*state)->gwy.addr, 0);
+					m_copyback(m, off,
+					    sizeof(struct icmp6_hdr),
+					    (caddr_t)pd->hdr.icmp6);
+					break;
+#endif /* INET6 */
+				}
+			} else {
+				switch (pd->af) {
+#ifdef INET
+				case AF_INET:
+					pf_change_a(&daddr->v4.s_addr,
+					    pd->ip_sum,
+					    (*state)->lan.addr.v4.s_addr, 0);
+					pd->hdr.icmp->icmp_cksum =
+					    pf_cksum_fixup(
+					    pd->hdr.icmp->icmp_cksum, icmpid,
+					    (*state)->lan.port, 0);
+					pd->hdr.icmp->icmp_id =
+					    (*state)->lan.port;
+					m_copyback(m, off, ICMP_MINLEN,
+					    (caddr_t)pd->hdr.icmp);
+					break;
+#endif /* INET */
+#ifdef INET6
+				case AF_INET6:
+					pf_change_a6(daddr,
+					    &pd->hdr.icmp6->icmp6_cksum,
+					    &(*state)->lan.addr, 0);
+					m_copyback(m, off,
+					    sizeof(struct icmp6_hdr),
+					    (caddr_t)pd->hdr.icmp6);
+					break;
+#endif /* INET6 */
+				}
+			}
+		}
+
+		return (PF_PASS);
+
+	} else {
+		/*
+		 * ICMP error message in response to a TCP/UDP packet.
+		 * Extract the inner TCP/UDP header and search for that state.
+		 */
+
+		struct pf_pdesc	pd2;
+#ifdef INET
+		struct ip	h2;
+#endif /* INET */
+#ifdef INET6
+		struct ip6_hdr	h2_6;
+		int		terminal = 0;
+#endif /* INET6 */
+		int		ipoff2 = 0;	/* make the compiler happy */
+		int		off2 = 0;	/* make the compiler happy */
+
+		pd2.af = pd->af;
+		switch (pd->af) {
+#ifdef INET
+		case AF_INET:
+			/* offset of h2 in mbuf chain */
+			ipoff2 = off + ICMP_MINLEN;
+
+			if (!pf_pull_hdr(m, ipoff2, &h2, sizeof(h2),
+			    NULL, reason, pd2.af)) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: ICMP error message too short "
+				    "(ip)\n"));
+				return (PF_DROP);
+			}
+			/*
+			 * ICMP error messages don't refer to non-first
+			 * fragments
+			 */
+			if (h2.ip_off & htons(IP_OFFMASK)) {
+				REASON_SET(reason, PFRES_FRAG);
+				return (PF_DROP);
+			}
+
+			/* offset of protocol header that follows h2 */
+			off2 = ipoff2 + (h2.ip_hl << 2);
+
+			pd2.proto = h2.ip_p;
+			pd2.src = (struct pf_addr *)&h2.ip_src;
+			pd2.dst = (struct pf_addr *)&h2.ip_dst;
+			pd2.ip_sum = &h2.ip_sum;
+			break;
+#endif /* INET */
+#ifdef INET6
+		case AF_INET6:
+			ipoff2 = off + sizeof(struct icmp6_hdr);
+
+			if (!pf_pull_hdr(m, ipoff2, &h2_6, sizeof(h2_6),
+			    NULL, reason, pd2.af)) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: ICMP error message too short "
+				    "(ip6)\n"));
+				return (PF_DROP);
+			}
+			pd2.proto = h2_6.ip6_nxt;
+			pd2.src = (struct pf_addr *)&h2_6.ip6_src;
+			pd2.dst = (struct pf_addr *)&h2_6.ip6_dst;
+			pd2.ip_sum = NULL;
+			off2 = ipoff2 + sizeof(h2_6);
+			do {
+				switch (pd2.proto) {
+				case IPPROTO_FRAGMENT:
+					/*
+					 * ICMPv6 error messages for
+					 * non-first fragments
+					 */
+					REASON_SET(reason, PFRES_FRAG);
+					return (PF_DROP);
+				case IPPROTO_AH:
+				case IPPROTO_HOPOPTS:
+				case IPPROTO_ROUTING:
+				case IPPROTO_DSTOPTS: {
+					/* get next header and header length */
+					struct ip6_ext opt6;
+
+					if (!pf_pull_hdr(m, off2, &opt6,
+					    sizeof(opt6), NULL, reason,
+					    pd2.af)) {
+						DPFPRINTF(PF_DEBUG_MISC,
+						    ("pf: ICMPv6 short opt\n"));
+						return (PF_DROP);
+					}
+					if (pd2.proto == IPPROTO_AH)
+						off2 += (opt6.ip6e_len + 2) * 4;
+					else
+						off2 += (opt6.ip6e_len + 1) * 8;
+					pd2.proto = opt6.ip6e_nxt;
+					/* goto the next header */
+					break;
+				}
+				default:
+					terminal++;
+					break;
+				}
+			} while (!terminal);
+			break;
+#endif /* INET6 */
+#ifdef __FreeBSD__
+		default:
+			panic("AF not supported: %d", pd->af);
+#endif
+		}
+
+		switch (pd2.proto) {
+		case IPPROTO_TCP: {
+			struct tcphdr		 th;
+			u_int32_t		 seq;
+			struct pf_state_peer	*src, *dst;
+			u_int8_t		 dws;
+			int			 copyback = 0;
+
+			/*
+			 * Only the first 8 bytes of the TCP header can be
+			 * expected. Don't access any TCP header fields after
+			 * th_seq, an ackskew test is not possible.
+			 */
+			if (!pf_pull_hdr(m, off2, &th, 8, NULL, reason,
+			    pd2.af)) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: ICMP error message too short "
+				    "(tcp)\n"));
+				return (PF_DROP);
+			}
+
+			key.af = pd2.af;
+			key.proto = IPPROTO_TCP;
+			if (direction == PF_IN)	{
+				PF_ACPY(&key.ext.addr, pd2.dst, key.af);
+				PF_ACPY(&key.gwy.addr, pd2.src, key.af);
+				key.ext.port = th.th_dport;
+				key.gwy.port = th.th_sport;
+			} else {
+				PF_ACPY(&key.lan.addr, pd2.dst, key.af);
+				PF_ACPY(&key.ext.addr, pd2.src, key.af);
+				key.lan.port = th.th_dport;
+				key.ext.port = th.th_sport;
+			}
+
+			STATE_LOOKUP();
+
+			if (direction == (*state)->direction) {
+				src = &(*state)->dst;
+				dst = &(*state)->src;
+			} else {
+				src = &(*state)->src;
+				dst = &(*state)->dst;
+			}
+
+			if (src->wscale && dst->wscale)
+				dws = dst->wscale & PF_WSCALE_MASK;
+			else
+				dws = 0;
+
+			/* Demodulate sequence number */
+			seq = ntohl(th.th_seq) - src->seqdiff;
+			if (src->seqdiff) {
+				pf_change_a(&th.th_seq, icmpsum,
+				    htonl(seq), 0);
+				copyback = 1;
+			}
+
+			if (!((*state)->state_flags & PFSTATE_SLOPPY) &&
+			    (!SEQ_GEQ(src->seqhi, seq) ||
+			    !SEQ_GEQ(seq, src->seqlo - (dst->max_win << dws)))) {
+				if (pf_status.debug >= PF_DEBUG_MISC) {
+					printf("pf: BAD ICMP %d:%d ",
+					    icmptype, pd->hdr.icmp->icmp_code);
+					pf_print_host(pd->src, 0, pd->af);
+					printf(" -> ");
+					pf_print_host(pd->dst, 0, pd->af);
+					printf(" state: ");
+					pf_print_state(*state);
+					printf(" seq=%u\n", seq);
+				}
+				REASON_SET(reason, PFRES_BADSTATE);
+				return (PF_DROP);
+			}
+
+			if (STATE_TRANSLATE(*state)) {
+				if (direction == PF_IN) {
+					pf_change_icmp(pd2.src, &th.th_sport,
+					    daddr, &(*state)->lan.addr,
+					    (*state)->lan.port, NULL,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 0, pd2.af);
+				} else {
+					pf_change_icmp(pd2.dst, &th.th_dport,
+					    saddr, &(*state)->gwy.addr,
+					    (*state)->gwy.port, NULL,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 0, pd2.af);
+				}
+				copyback = 1;
+			}
+
+			if (copyback) {
+				switch (pd2.af) {
+#ifdef INET
+				case AF_INET:
+					m_copyback(m, off, ICMP_MINLEN,
+					    (caddr_t)pd->hdr.icmp);
+					m_copyback(m, ipoff2, sizeof(h2),
+					    (caddr_t)&h2);
+					break;
+#endif /* INET */
+#ifdef INET6
+				case AF_INET6:
+					m_copyback(m, off,
+					    sizeof(struct icmp6_hdr),
+					    (caddr_t)pd->hdr.icmp6);
+					m_copyback(m, ipoff2, sizeof(h2_6),
+					    (caddr_t)&h2_6);
+					break;
+#endif /* INET6 */
+				}
+				m_copyback(m, off2, 8, (caddr_t)&th);
+			}
+
+			return (PF_PASS);
+			break;
+		}
+		case IPPROTO_UDP: {
+			struct udphdr		uh;
+
+			if (!pf_pull_hdr(m, off2, &uh, sizeof(uh),
+			    NULL, reason, pd2.af)) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: ICMP error message too short "
+				    "(udp)\n"));
+				return (PF_DROP);
+			}
+
+			key.af = pd2.af;
+			key.proto = IPPROTO_UDP;
+			if (direction == PF_IN)	{
+				PF_ACPY(&key.ext.addr, pd2.dst, key.af);
+				PF_ACPY(&key.gwy.addr, pd2.src, key.af);
+				key.ext.port = uh.uh_dport;
+				key.gwy.port = uh.uh_sport;
+			} else {
+				PF_ACPY(&key.lan.addr, pd2.dst, key.af);
+				PF_ACPY(&key.ext.addr, pd2.src, key.af);
+				key.lan.port = uh.uh_dport;
+				key.ext.port = uh.uh_sport;
+			}
+
+			STATE_LOOKUP();
+
+			if (STATE_TRANSLATE(*state)) {
+				if (direction == PF_IN) {
+					pf_change_icmp(pd2.src, &uh.uh_sport,
+					    daddr, &(*state)->lan.addr,
+					    (*state)->lan.port, &uh.uh_sum,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 1, pd2.af);
+				} else {
+					pf_change_icmp(pd2.dst, &uh.uh_dport,
+					    saddr, &(*state)->gwy.addr,
+					    (*state)->gwy.port, &uh.uh_sum,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 1, pd2.af);
+				}
+				switch (pd2.af) {
+#ifdef INET
+				case AF_INET:
+					m_copyback(m, off, ICMP_MINLEN,
+					    (caddr_t)pd->hdr.icmp);
+					m_copyback(m, ipoff2, sizeof(h2),
+					    (caddr_t)&h2);
+					break;
+#endif /* INET */
+#ifdef INET6
+				case AF_INET6:
+					m_copyback(m, off,
+					    sizeof(struct icmp6_hdr),
+					    (caddr_t)pd->hdr.icmp6);
+					m_copyback(m, ipoff2, sizeof(h2_6),
+					    (caddr_t)&h2_6);
+					break;
+#endif /* INET6 */
+				}
+				m_copyback(m, off2, sizeof(uh),
+				    (caddr_t)&uh);
+			}
+
+			return (PF_PASS);
+			break;
+		}
+#ifdef INET
+		case IPPROTO_ICMP: {
+			struct icmp		iih;
+
+			if (!pf_pull_hdr(m, off2, &iih, ICMP_MINLEN,
+			    NULL, reason, pd2.af)) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: ICMP error message too short i"
+				    "(icmp)\n"));
+				return (PF_DROP);
+			}
+
+			key.af = pd2.af;
+			key.proto = IPPROTO_ICMP;
+			if (direction == PF_IN)	{
+				PF_ACPY(&key.ext.addr, pd2.dst, key.af);
+				PF_ACPY(&key.gwy.addr, pd2.src, key.af);
+				key.ext.port = 0;
+				key.gwy.port = iih.icmp_id;
+			} else {
+				PF_ACPY(&key.lan.addr, pd2.dst, key.af);
+				PF_ACPY(&key.ext.addr, pd2.src, key.af);
+				key.lan.port = iih.icmp_id;
+				key.ext.port = 0;
+			}
+
+			STATE_LOOKUP();
+
+			if (STATE_TRANSLATE(*state)) {
+				if (direction == PF_IN) {
+					pf_change_icmp(pd2.src, &iih.icmp_id,
+					    daddr, &(*state)->lan.addr,
+					    (*state)->lan.port, NULL,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 0, AF_INET);
+				} else {
+					pf_change_icmp(pd2.dst, &iih.icmp_id,
+					    saddr, &(*state)->gwy.addr,
+					    (*state)->gwy.port, NULL,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 0, AF_INET);
+				}
+				m_copyback(m, off, ICMP_MINLEN,
+				    (caddr_t)pd->hdr.icmp);
+				m_copyback(m, ipoff2, sizeof(h2),
+				    (caddr_t)&h2);
+				m_copyback(m, off2, ICMP_MINLEN,
+				    (caddr_t)&iih);
+			}
+
+			return (PF_PASS);
+			break;
+		}
+#endif /* INET */
+#ifdef INET6
+		case IPPROTO_ICMPV6: {
+			struct icmp6_hdr	iih;
+
+			if (!pf_pull_hdr(m, off2, &iih,
+			    sizeof(struct icmp6_hdr), NULL, reason, pd2.af)) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: ICMP error message too short "
+				    "(icmp6)\n"));
+				return (PF_DROP);
+			}
+
+			key.af = pd2.af;
+			key.proto = IPPROTO_ICMPV6;
+			if (direction == PF_IN)	{
+				PF_ACPY(&key.ext.addr, pd2.dst, key.af);
+				PF_ACPY(&key.gwy.addr, pd2.src, key.af);
+				key.ext.port = 0;
+				key.gwy.port = iih.icmp6_id;
+			} else {
+				PF_ACPY(&key.lan.addr, pd2.dst, key.af);
+				PF_ACPY(&key.ext.addr, pd2.src, key.af);
+				key.lan.port = iih.icmp6_id;
+				key.ext.port = 0;
+			}
+
+			STATE_LOOKUP();
+
+			if (STATE_TRANSLATE(*state)) {
+				if (direction == PF_IN) {
+					pf_change_icmp(pd2.src, &iih.icmp6_id,
+					    daddr, &(*state)->lan.addr,
+					    (*state)->lan.port, NULL,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 0, AF_INET6);
+				} else {
+					pf_change_icmp(pd2.dst, &iih.icmp6_id,
+					    saddr, &(*state)->gwy.addr,
+					    (*state)->gwy.port, NULL,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 0, AF_INET6);
+				}
+				m_copyback(m, off, sizeof(struct icmp6_hdr),
+				    (caddr_t)pd->hdr.icmp6);
+				m_copyback(m, ipoff2, sizeof(h2_6),
+				    (caddr_t)&h2_6);
+				m_copyback(m, off2, sizeof(struct icmp6_hdr),
+				    (caddr_t)&iih);
+			}
+
+			return (PF_PASS);
+			break;
+		}
+#endif /* INET6 */
+		default: {
+			key.af = pd2.af;
+			key.proto = pd2.proto;
+			if (direction == PF_IN)	{
+				PF_ACPY(&key.ext.addr, pd2.dst, key.af);
+				PF_ACPY(&key.gwy.addr, pd2.src, key.af);
+				key.ext.port = 0;
+				key.gwy.port = 0;
+			} else {
+				PF_ACPY(&key.lan.addr, pd2.dst, key.af);
+				PF_ACPY(&key.ext.addr, pd2.src, key.af);
+				key.lan.port = 0;
+				key.ext.port = 0;
+			}
+
+			STATE_LOOKUP();
+
+			if (STATE_TRANSLATE(*state)) {
+				if (direction == PF_IN) {
+					pf_change_icmp(pd2.src, NULL,
+					    daddr, &(*state)->lan.addr,
+					    0, NULL,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 0, pd2.af);
+				} else {
+					pf_change_icmp(pd2.dst, NULL,
+					    saddr, &(*state)->gwy.addr,
+					    0, NULL,
+					    pd2.ip_sum, icmpsum,
+					    pd->ip_sum, 0, pd2.af);
+				}
+				switch (pd2.af) {
+#ifdef INET
+				case AF_INET:
+					m_copyback(m, off, ICMP_MINLEN,
+					    (caddr_t)pd->hdr.icmp);
+					m_copyback(m, ipoff2, sizeof(h2),
+					    (caddr_t)&h2);
+					break;
+#endif /* INET */
+#ifdef INET6
+				case AF_INET6:
+					m_copyback(m, off,
+					    sizeof(struct icmp6_hdr),
+					    (caddr_t)pd->hdr.icmp6);
+					m_copyback(m, ipoff2, sizeof(h2_6),
+					    (caddr_t)&h2_6);
+					break;
+#endif /* INET6 */
+				}
+			}
+
+			return (PF_PASS);
+			break;
+		}
+		}
+	}
+}
+
+int
+pf_test_state_other(struct pf_state **state, int direction, struct pfi_kif *kif,
+    struct pf_pdesc *pd)
+{
+	struct pf_state_peer	*src, *dst;
+	struct pf_state_cmp	 key;
+
+	key.af = pd->af;
+	key.proto = pd->proto;
+	if (direction == PF_IN)	{
+		PF_ACPY(&key.ext.addr, pd->src, key.af);
+		PF_ACPY(&key.gwy.addr, pd->dst, key.af);
+		key.ext.port = 0;
+		key.gwy.port = 0;
+	} else {
+		PF_ACPY(&key.lan.addr, pd->src, key.af);
+		PF_ACPY(&key.ext.addr, pd->dst, key.af);
+		key.lan.port = 0;
+		key.ext.port = 0;
+	}
+
+	STATE_LOOKUP();
+
+	if (direction == (*state)->direction) {
+		src = &(*state)->src;
+		dst = &(*state)->dst;
+	} else {
+		src = &(*state)->dst;
+		dst = &(*state)->src;
+	}
+
+	/* update states */
+	if (src->state < PFOTHERS_SINGLE)
+		src->state = PFOTHERS_SINGLE;
+	if (dst->state == PFOTHERS_SINGLE)
+		dst->state = PFOTHERS_MULTIPLE;
+
+	/* update expire time */
+	(*state)->expire = time_second;
+	if (src->state == PFOTHERS_MULTIPLE && dst->state == PFOTHERS_MULTIPLE)
+		(*state)->timeout = PFTM_OTHER_MULTIPLE;
+	else
+		(*state)->timeout = PFTM_OTHER_SINGLE;
+
+	/* translate source/destination address, if necessary */
+	if (STATE_TRANSLATE(*state)) {
+		if (direction == PF_OUT)
+			switch (pd->af) {
+#ifdef INET
+			case AF_INET:
+				pf_change_a(&pd->src->v4.s_addr,
+				    pd->ip_sum, (*state)->gwy.addr.v4.s_addr,
+				    0);
+				break;
+#endif /* INET */
+#ifdef INET6
+			case AF_INET6:
+				PF_ACPY(pd->src, &(*state)->gwy.addr, pd->af);
+				break;
+#endif /* INET6 */
+			}
+		else
+			switch (pd->af) {
+#ifdef INET
+			case AF_INET:
+				pf_change_a(&pd->dst->v4.s_addr,
+				    pd->ip_sum, (*state)->lan.addr.v4.s_addr,
+				    0);
+				break;
+#endif /* INET */
+#ifdef INET6
+			case AF_INET6:
+				PF_ACPY(pd->dst, &(*state)->lan.addr, pd->af);
+				break;
+#endif /* INET6 */
+			}
+	}
+
+	return (PF_PASS);
+}
+
+/*
+ * ipoff and off are measured from the start of the mbuf chain.
+ * h must be at "ipoff" on the mbuf chain.
+ */
+void *
+pf_pull_hdr(struct mbuf *m, int off, void *p, int len,
+    u_short *actionp, u_short *reasonp, sa_family_t af)
+{
+	switch (af) {
+#ifdef INET
+	case AF_INET: {
+		struct ip	*h = mtod(m, struct ip *);
+		u_int16_t	 fragoff = (ntohs(h->ip_off) & IP_OFFMASK) << 3;
+
+		if (fragoff) {
+			if (fragoff >= len)
+				ACTION_SET(actionp, PF_PASS);
+			else {
+				ACTION_SET(actionp, PF_DROP);
+				REASON_SET(reasonp, PFRES_FRAG);
+			}
+			return (NULL);
+		}
+		if (m->m_pkthdr.len < off + len ||
+		    ntohs(h->ip_len) < off + len) {
+			ACTION_SET(actionp, PF_DROP);
+			REASON_SET(reasonp, PFRES_SHORT);
+			return (NULL);
+		}
+		break;
+	}
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6: {
+		struct ip6_hdr	*h = mtod(m, struct ip6_hdr *);
+
+		if (m->m_pkthdr.len < off + len ||
+		    (ntohs(h->ip6_plen) + sizeof(struct ip6_hdr)) <
+		    (unsigned)(off + len)) {
+			ACTION_SET(actionp, PF_DROP);
+			REASON_SET(reasonp, PFRES_SHORT);
+			return (NULL);
+		}
+		break;
+	}
+#endif /* INET6 */
+	}
+	m_copydata(m, off, len, p);
+	return (p);
+}
+
+int
+pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *kif)
+{
+	struct sockaddr_in	*dst;
+	int			 ret = 1;
+	int			 check_mpath;
+#ifndef __FreeBSD__
+	extern int		 ipmultipath;
+#endif
+#ifdef INET6
+#ifndef __FreeBSD__
+	extern int		 ip6_multipath;
+#endif
+	struct sockaddr_in6	*dst6;
+	struct route_in6	 ro;
+#else
+	struct route		 ro;
+#endif
+	struct radix_node	*rn;
+	struct rtentry		*rt;
+	struct ifnet		*ifp;
+
+	check_mpath = 0;
+	bzero(&ro, sizeof(ro));
+	switch (af) {
+	case AF_INET:
+		dst = satosin(&ro.ro_dst);
+		dst->sin_family = AF_INET;
+		dst->sin_len = sizeof(*dst);
+		dst->sin_addr = addr->v4;
+#ifndef __FreeBSD__	/* MULTIPATH_ROUTING */
+		if (ipmultipath)
+			check_mpath = 1;
+#endif
+		break;
+#ifdef INET6
+	case AF_INET6:
+		dst6 = (struct sockaddr_in6 *)&ro.ro_dst;
+		dst6->sin6_family = AF_INET6;
+		dst6->sin6_len = sizeof(*dst6);
+		dst6->sin6_addr = addr->v6;
+#ifndef __FreeBSD__	/* MULTIPATH_ROUTING */
+		if (ip6_multipath)
+			check_mpath = 1;
+#endif
+		break;
+#endif /* INET6 */
+	default:
+		return (0);
+	}
+
+	/* Skip checks for ipsec interfaces */
+	if (kif != NULL && kif->pfik_ifp->if_type == IFT_ENC)
+		goto out;
+
+#ifdef __FreeBSD__
+/* XXX MRT not always INET */ /* stick with table 0 though */
+	if (af == AF_INET)
+		in_rtalloc_ign((struct route *)&ro, 0, 0);
+	else
+		rtalloc_ign((struct route *)&ro, 0);
+#else /* ! __FreeBSD__ */
+	rtalloc_noclone((struct route *)&ro, NO_CLONING);
+#endif
+
+	if (ro.ro_rt != NULL) {
+		/* No interface given, this is a no-route check */
+		if (kif == NULL)
+			goto out;
+
+		if (kif->pfik_ifp == NULL) {
+			ret = 0;
+			goto out;
+		}
+
+		/* Perform uRPF check if passed input interface */
+		ret = 0;
+		rn = (struct radix_node *)ro.ro_rt;
+		do {
+			rt = (struct rtentry *)rn;
+#ifndef __FreeBSD__ /* CARPDEV */
+			if (rt->rt_ifp->if_type == IFT_CARP)
+				ifp = rt->rt_ifp->if_carpdev;
+			else
+#endif
+				ifp = rt->rt_ifp;
+
+			if (kif->pfik_ifp == ifp)
+				ret = 1;
+#ifdef __FreeBSD__ /* MULTIPATH_ROUTING */
+			rn = NULL;
+#else
+			rn = rn_mpath_next(rn);
+#endif
+		} while (check_mpath == 1 && rn != NULL && ret == 0);
+	} else
+		ret = 0;
+out:
+	if (ro.ro_rt != NULL)
+		RTFREE(ro.ro_rt);
+	return (ret);
+}
+
+int
+pf_rtlabel_match(struct pf_addr *addr, sa_family_t af, struct pf_addr_wrap *aw)
+{
+	struct sockaddr_in	*dst;
+#ifdef INET6
+	struct sockaddr_in6	*dst6;
+	struct route_in6	 ro;
+#else
+	struct route		 ro;
+#endif
+	int			 ret = 0;
+
+	bzero(&ro, sizeof(ro));
+	switch (af) {
+	case AF_INET:
+		dst = satosin(&ro.ro_dst);
+		dst->sin_family = AF_INET;
+		dst->sin_len = sizeof(*dst);
+		dst->sin_addr = addr->v4;
+		break;
+#ifdef INET6
+	case AF_INET6:
+		dst6 = (struct sockaddr_in6 *)&ro.ro_dst;
+		dst6->sin6_family = AF_INET6;
+		dst6->sin6_len = sizeof(*dst6);
+		dst6->sin6_addr = addr->v6;
+		break;
+#endif /* INET6 */
+	default:
+		return (0);
+	}
+
+#ifdef __FreeBSD__
+# ifdef RTF_PRCLONING
+	rtalloc_ign((struct route *)&ro, (RTF_CLONING|RTF_PRCLONING));
+# else /* !RTF_PRCLONING */
+	if (af == AF_INET)
+		in_rtalloc_ign((struct route *)&ro, 0, 0);
+	else
+		rtalloc_ign((struct route *)&ro, 0);
+# endif
+#else /* ! __FreeBSD__ */
+	rtalloc_noclone((struct route *)&ro, NO_CLONING);
+#endif
+
+	if (ro.ro_rt != NULL) {
+#ifdef __FreeBSD__
+		/* XXX_IMPORT: later */
+#else
+		if (ro.ro_rt->rt_labelid == aw->v.rtlabel)
+			ret = 1;
+#endif
+		RTFREE(ro.ro_rt);
+	}
+
+	return (ret);
+}
+
+#ifdef INET
+
+void
+pf_route(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
+    struct pf_state *s, struct pf_pdesc *pd)
+{
+	struct mbuf		*m0, *m1;
+	struct route		 iproute;
+	struct route		*ro = NULL;
+	struct sockaddr_in	*dst;
+	struct ip		*ip;
+	struct ifnet		*ifp = NULL;
+	struct pf_addr		 naddr;
+	struct pf_src_node	*sn = NULL;
+	int			 error = 0;
+#ifdef __FreeBSD__
+	int sw_csum;
+#endif
+#ifdef IPSEC
+	struct m_tag		*mtag;
+#endif /* IPSEC */
+
+	if (m == NULL || *m == NULL || r == NULL ||
+	    (dir != PF_IN && dir != PF_OUT) || oifp == NULL)
+		panic("pf_route: invalid parameters");
+
+	if (pd->pf_mtag->routed++ > 3) {
+		m0 = *m;
+		*m = NULL;
+		goto bad;
+	}
+
+	if (r->rt == PF_DUPTO) {
+#ifdef __FreeBSD__
+		if ((m0 = m_dup(*m, M_DONTWAIT)) == NULL)
+#else
+		if ((m0 = m_copym2(*m, 0, M_COPYALL, M_NOWAIT)) == NULL)
+#endif
+			return;
+	} else {
+		if ((r->rt == PF_REPLYTO) == (r->direction == dir))
+			return;
+		m0 = *m;
+	}
+
+	if (m0->m_len < sizeof(struct ip)) {
+		DPFPRINTF(PF_DEBUG_URGENT,
+		    ("pf_route: m0->m_len < sizeof(struct ip)\n"));
+		goto bad;
+	}
+
+	ip = mtod(m0, struct ip *);
+
+	ro = &iproute;
+	bzero((caddr_t)ro, sizeof(*ro));
+	dst = satosin(&ro->ro_dst);
+	dst->sin_family = AF_INET;
+	dst->sin_len = sizeof(*dst);
+	dst->sin_addr = ip->ip_dst;
+
+	if (r->rt == PF_FASTROUTE) {
+		in_rtalloc(ro, 0);
+		if (ro->ro_rt == 0) {
+			KMOD_IPSTAT_INC(ips_noroute);
+			goto bad;
+		}
+
+		ifp = ro->ro_rt->rt_ifp;
+		ro->ro_rt->rt_use++;
+
+		if (ro->ro_rt->rt_flags & RTF_GATEWAY)
+			dst = satosin(ro->ro_rt->rt_gateway);
+	} else {
+		if (TAILQ_EMPTY(&r->rpool.list)) {
+			DPFPRINTF(PF_DEBUG_URGENT,
+			    ("pf_route: TAILQ_EMPTY(&r->rpool.list)\n"));
+			goto bad;
+		}
+		if (s == NULL) {
+			pf_map_addr(AF_INET, r, (struct pf_addr *)&ip->ip_src,
+			    &naddr, NULL, &sn);
+			if (!PF_AZERO(&naddr, AF_INET))
+				dst->sin_addr.s_addr = naddr.v4.s_addr;
+			ifp = r->rpool.cur->kif ?
+			    r->rpool.cur->kif->pfik_ifp : NULL;
+		} else {
+			if (!PF_AZERO(&s->rt_addr, AF_INET))
+				dst->sin_addr.s_addr =
+				    s->rt_addr.v4.s_addr;
+			ifp = s->rt_kif ? s->rt_kif->pfik_ifp : NULL;
+		}
+	}
+	if (ifp == NULL)
+		goto bad;
+
+	if (oifp != ifp) {
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+		if (pf_test(PF_OUT, ifp, &m0, NULL, NULL) != PF_PASS) {
+			PF_LOCK();
+			goto bad;
+		} else if (m0 == NULL) {
+			PF_LOCK();
+			goto done;
+		}
+		PF_LOCK();
+#else
+		if (pf_test(PF_OUT, ifp, &m0, NULL) != PF_PASS)
+			goto bad;
+		else if (m0 == NULL)
+			goto done;
+#endif
+		if (m0->m_len < sizeof(struct ip)) {
+			DPFPRINTF(PF_DEBUG_URGENT,
+			    ("pf_route: m0->m_len < sizeof(struct ip)\n"));
+			goto bad;
+		}
+		ip = mtod(m0, struct ip *);
+	}
+
+#ifdef __FreeBSD__
+	/* Copied from FreeBSD 5.1-CURRENT ip_output. */
+	m0->m_pkthdr.csum_flags |= CSUM_IP;
+	sw_csum = m0->m_pkthdr.csum_flags & ~ifp->if_hwassist;
+	if (sw_csum & CSUM_DELAY_DATA) {
+		/*
+		 * XXX: in_delayed_cksum assumes HBO for ip->ip_len (at least)
+		 */
+		NTOHS(ip->ip_len);
+		NTOHS(ip->ip_off);	 /* XXX: needed? */
+		in_delayed_cksum(m0);
+		HTONS(ip->ip_len);
+		HTONS(ip->ip_off);
+		sw_csum &= ~CSUM_DELAY_DATA;
+	}
+	m0->m_pkthdr.csum_flags &= ifp->if_hwassist;
+
+	if (ntohs(ip->ip_len) <= ifp->if_mtu ||
+	    (m0->m_pkthdr.csum_flags & ifp->if_hwassist & CSUM_TSO) != 0 ||
+	    (ifp->if_hwassist & CSUM_FRAGMENT &&
+		((ip->ip_off & htons(IP_DF)) == 0))) {
+		/*
+		 * ip->ip_len = htons(ip->ip_len);
+		 * ip->ip_off = htons(ip->ip_off);
+		 */
+		ip->ip_sum = 0;
+		if (sw_csum & CSUM_DELAY_IP) {
+			/* From KAME */
+			if (ip->ip_v == IPVERSION &&
+			    (ip->ip_hl << 2) == sizeof(*ip)) {
+				ip->ip_sum = in_cksum_hdr(ip);
+			} else {
+				ip->ip_sum = in_cksum(m0, ip->ip_hl << 2);
+			}
+		}
+		PF_UNLOCK();
+		error = (*ifp->if_output)(ifp, m0, sintosa(dst), ro);
+		PF_LOCK();
+		goto done;
+	}
+
+#else
+	/* Copied from ip_output. */
+#ifdef IPSEC
+	/*
+	 * If deferred crypto processing is needed, check that the
+	 * interface supports it.
+	 */
+	if ((mtag = m_tag_find(m0, PACKET_TAG_IPSEC_OUT_CRYPTO_NEEDED, NULL))
+	    != NULL && (ifp->if_capabilities & IFCAP_IPSEC) == 0) {
+		/* Notify IPsec to do its own crypto. */
+		ipsp_skipcrypto_unmark((struct tdb_ident *)(mtag + 1));
+		goto bad;
+	}
+#endif /* IPSEC */
+
+	/* Catch routing changes wrt. hardware checksumming for TCP or UDP. */
+	if (m0->m_pkthdr.csum_flags & M_TCPV4_CSUM_OUT) {
+		if (!(ifp->if_capabilities & IFCAP_CSUM_TCPv4) ||
+		    ifp->if_bridge != NULL) {
+			in_delayed_cksum(m0);
+			m0->m_pkthdr.csum_flags &= ~M_TCPV4_CSUM_OUT; /* Clear */
+		}
+	} else if (m0->m_pkthdr.csum_flags & M_UDPV4_CSUM_OUT) {
+		if (!(ifp->if_capabilities & IFCAP_CSUM_UDPv4) ||
+		    ifp->if_bridge != NULL) {
+			in_delayed_cksum(m0);
+			m0->m_pkthdr.csum_flags &= ~M_UDPV4_CSUM_OUT; /* Clear */
+		}
+	}
+
+	if (ntohs(ip->ip_len) <= ifp->if_mtu) {
+		if ((ifp->if_capabilities & IFCAP_CSUM_IPv4) &&
+		    ifp->if_bridge == NULL) {
+			m0->m_pkthdr.csum_flags |= M_IPV4_CSUM_OUT;
+			KMOD_IPSTAT_INC(ips_outhwcsum);
+		} else {
+			ip->ip_sum = 0;
+			ip->ip_sum = in_cksum(m0, ip->ip_hl << 2);
+		}
+		/* Update relevant hardware checksum stats for TCP/UDP */
+		if (m0->m_pkthdr.csum_flags & M_TCPV4_CSUM_OUT)
+			KMOD_TCPSTAT_INC(tcps_outhwcsum);
+		else if (m0->m_pkthdr.csum_flags & M_UDPV4_CSUM_OUT)
+			KMOD_UDPSTAT_INC(udps_outhwcsum);
+		error = (*ifp->if_output)(ifp, m0, sintosa(dst), NULL);
+		goto done;
+	}
+#endif
+	/*
+	 * Too large for interface; fragment if possible.
+	 * Must be able to put at least 8 bytes per fragment.
+	 */
+	if (ip->ip_off & htons(IP_DF) || (m0->m_pkthdr.csum_flags & CSUM_TSO)) {
+		KMOD_IPSTAT_INC(ips_cantfrag);
+		if (r->rt != PF_DUPTO) {
+#ifdef __FreeBSD__
+			/* icmp_error() expects host byte ordering */
+			NTOHS(ip->ip_len);
+			NTOHS(ip->ip_off);
+			PF_UNLOCK();
+			icmp_error(m0, ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG, 0,
+			    ifp->if_mtu);
+			PF_LOCK();
+#else
+			icmp_error(m0, ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG, 0,
+			    ifp->if_mtu);
+#endif
+			goto done;
+		} else
+			goto bad;
+	}
+
+	m1 = m0;
+#ifdef __FreeBSD__
+	/*
+	 * XXX: is cheaper + less error prone than own function
+	 */
+	NTOHS(ip->ip_len);
+	NTOHS(ip->ip_off);
+	error = ip_fragment(ip, &m0, ifp->if_mtu, ifp->if_hwassist, sw_csum);
+#else
+	error = ip_fragment(m0, ifp, ifp->if_mtu);
+#endif
+	if (error) {
+#ifndef __FreeBSD__	/* ip_fragment does not do m_freem() on FreeBSD */
+		m0 = NULL;
+#endif
+		goto bad;
+	}
+
+	for (m0 = m1; m0; m0 = m1) {
+		m1 = m0->m_nextpkt;
+		m0->m_nextpkt = 0;
+#ifdef __FreeBSD__
+		if (error == 0) {
+			PF_UNLOCK();
+			error = (*ifp->if_output)(ifp, m0, sintosa(dst),
+			    NULL);
+			PF_LOCK();
+		} else
+#else
+		if (error == 0)
+			error = (*ifp->if_output)(ifp, m0, sintosa(dst),
+			    NULL);
+		else
+#endif
+			m_freem(m0);
+	}
+
+	if (error == 0)
+		KMOD_IPSTAT_INC(ips_fragmented);
+
+done:
+	if (r->rt != PF_DUPTO)
+		*m = NULL;
+	if (ro == &iproute && ro->ro_rt)
+		RTFREE(ro->ro_rt);
+	return;
+
+bad:
+	m_freem(m0);
+	goto done;
+}
+#endif /* INET */
+
+#ifdef INET6
+void
+pf_route6(struct mbuf **m, struct pf_rule *r, int dir, struct ifnet *oifp,
+    struct pf_state *s, struct pf_pdesc *pd)
+{
+	struct mbuf		*m0;
+	struct route_in6	 ip6route;
+	struct route_in6	*ro;
+	struct sockaddr_in6	*dst;
+	struct ip6_hdr		*ip6;
+	struct ifnet		*ifp = NULL;
+	struct pf_addr		 naddr;
+	struct pf_src_node	*sn = NULL;
+	int			 error = 0;
+
+	if (m == NULL || *m == NULL || r == NULL ||
+	    (dir != PF_IN && dir != PF_OUT) || oifp == NULL)
+		panic("pf_route6: invalid parameters");
+
+	if (pd->pf_mtag->routed++ > 3) {
+		m0 = *m;
+		*m = NULL;
+		goto bad;
+	}
+
+	if (r->rt == PF_DUPTO) {
+#ifdef __FreeBSD__
+		if ((m0 = m_dup(*m, M_DONTWAIT)) == NULL)
+#else
+		if ((m0 = m_copym2(*m, 0, M_COPYALL, M_NOWAIT)) == NULL)
+#endif
+			return;
+	} else {
+		if ((r->rt == PF_REPLYTO) == (r->direction == dir))
+			return;
+		m0 = *m;
+	}
+
+	if (m0->m_len < sizeof(struct ip6_hdr)) {
+		DPFPRINTF(PF_DEBUG_URGENT,
+		    ("pf_route6: m0->m_len < sizeof(struct ip6_hdr)\n"));
+		goto bad;
+	}
+	ip6 = mtod(m0, struct ip6_hdr *);
+
+	ro = &ip6route;
+	bzero((caddr_t)ro, sizeof(*ro));
+	dst = (struct sockaddr_in6 *)&ro->ro_dst;
+	dst->sin6_family = AF_INET6;
+	dst->sin6_len = sizeof(*dst);
+	dst->sin6_addr = ip6->ip6_dst;
+
+	/* Cheat. XXX why only in the v6 case??? */
+	if (r->rt == PF_FASTROUTE) {
+#ifdef __FreeBSD__
+		m0->m_flags |= M_SKIP_FIREWALL;
+		PF_UNLOCK();
+		ip6_output(m0, NULL, NULL, 0, NULL, NULL, NULL);
+		PF_LOCK();
+#else
+		mtag = m_tag_get(PACKET_TAG_PF_GENERATED, 0, M_NOWAIT);
+		if (mtag == NULL)
+			goto bad;
+		m_tag_prepend(m0, mtag);
+		pd->pf_mtag->flags |= PF_TAG_GENERATED;
+		ip6_output(m0, NULL, NULL, 0, NULL, NULL);
+#endif
+		return;
+	}
+
+	if (TAILQ_EMPTY(&r->rpool.list)) {
+		DPFPRINTF(PF_DEBUG_URGENT,
+		    ("pf_route6: TAILQ_EMPTY(&r->rpool.list)\n"));
+		goto bad;
+	}
+	if (s == NULL) {
+		pf_map_addr(AF_INET6, r, (struct pf_addr *)&ip6->ip6_src,
+		    &naddr, NULL, &sn);
+		if (!PF_AZERO(&naddr, AF_INET6))
+			PF_ACPY((struct pf_addr *)&dst->sin6_addr,
+			    &naddr, AF_INET6);
+		ifp = r->rpool.cur->kif ? r->rpool.cur->kif->pfik_ifp : NULL;
+	} else {
+		if (!PF_AZERO(&s->rt_addr, AF_INET6))
+			PF_ACPY((struct pf_addr *)&dst->sin6_addr,
+			    &s->rt_addr, AF_INET6);
+		ifp = s->rt_kif ? s->rt_kif->pfik_ifp : NULL;
+	}
+	if (ifp == NULL)
+		goto bad;
+
+	if (oifp != ifp) {
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+		if (pf_test6(PF_OUT, ifp, &m0, NULL, NULL) != PF_PASS) {
+			PF_LOCK();
+			goto bad;
+		} else if (m0 == NULL) {
+			PF_LOCK();
+			goto done;
+		}
+		PF_LOCK();
+#else
+		if (pf_test6(PF_OUT, ifp, &m0, NULL) != PF_PASS)
+			goto bad;
+		else if (m0 == NULL)
+			goto done;
+#endif
+		if (m0->m_len < sizeof(struct ip6_hdr)) {
+			DPFPRINTF(PF_DEBUG_URGENT,
+			    ("pf_route6: m0->m_len < sizeof(struct ip6_hdr)\n"));
+			goto bad;
+		}
+		ip6 = mtod(m0, struct ip6_hdr *);
+	}
+
+	/*
+	 * If the packet is too large for the outgoing interface,
+	 * send back an icmp6 error.
+	 */
+	if (IN6_IS_SCOPE_EMBED(&dst->sin6_addr))
+		dst->sin6_addr.s6_addr16[1] = htons(ifp->if_index);
+	if ((u_long)m0->m_pkthdr.len <= ifp->if_mtu) {
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+#endif
+		error = nd6_output(ifp, ifp, m0, dst, NULL);
+#ifdef __FreeBSD__
+		PF_LOCK();
+#endif
+	} else {
+		in6_ifstat_inc(ifp, ifs6_in_toobig);
+#ifdef __FreeBSD__
+		if (r->rt != PF_DUPTO) {
+			PF_UNLOCK();
+			icmp6_error(m0, ICMP6_PACKET_TOO_BIG, 0, ifp->if_mtu);
+			PF_LOCK();
+		 } else
+#else
+		if (r->rt != PF_DUPTO)
+			icmp6_error(m0, ICMP6_PACKET_TOO_BIG, 0, ifp->if_mtu);
+		else
+#endif
+			goto bad;
+	}
+
+done:
+	if (r->rt != PF_DUPTO)
+		*m = NULL;
+	return;
+
+bad:
+	m_freem(m0);
+	goto done;
+}
+#endif /* INET6 */
+
+
+#ifdef __FreeBSD__
+/*
+ * FreeBSD supports cksum offloads for the following drivers.
+ *  em(4), fxp(4), ixgb(4), lge(4), ndis(4), nge(4), re(4),
+ *   ti(4), txp(4), xl(4)
+ *
+ * CSUM_DATA_VALID | CSUM_PSEUDO_HDR :
+ *  network driver performed cksum including pseudo header, need to verify
+ *   csum_data
+ * CSUM_DATA_VALID :
+ *  network driver performed cksum, needs to additional pseudo header
+ *  cksum computation with partial csum_data(i.e. lack of H/W support for
+ *  pseudo header, for instance hme(4), sk(4) and possibly gem(4))
+ *
+ * After validating the cksum of packet, set both flag CSUM_DATA_VALID and
+ * CSUM_PSEUDO_HDR in order to avoid recomputation of the cksum in upper
+ * TCP/UDP layer.
+ * Also, set csum_data to 0xffff to force cksum validation.
+ */
+int
+pf_check_proto_cksum(struct mbuf *m, int off, int len, u_int8_t p, sa_family_t af)
+{
+	u_int16_t sum = 0;
+	int hw_assist = 0;
+	struct ip *ip;
+
+	if (off < sizeof(struct ip) || len < sizeof(struct udphdr))
+		return (1);
+	if (m->m_pkthdr.len < off + len)
+		return (1);
+
+	switch (p) {
+	case IPPROTO_TCP:
+		if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) {
+			if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR) {
+				sum = m->m_pkthdr.csum_data;
+			} else {
+				ip = mtod(m, struct ip *);	
+				sum = in_pseudo(ip->ip_src.s_addr,
+					ip->ip_dst.s_addr, htonl((u_short)len + 
+					m->m_pkthdr.csum_data + IPPROTO_TCP));
+			}
+			sum ^= 0xffff;
+			++hw_assist;
+		}
+		break;
+	case IPPROTO_UDP:
+		if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) {
+			if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR) {
+				sum = m->m_pkthdr.csum_data;
+			} else {
+				ip = mtod(m, struct ip *);	
+				sum = in_pseudo(ip->ip_src.s_addr,
+					ip->ip_dst.s_addr, htonl((u_short)len +
+					m->m_pkthdr.csum_data + IPPROTO_UDP));
+			}
+			sum ^= 0xffff;
+			++hw_assist;
+                }
+		break;
+	case IPPROTO_ICMP:
+#ifdef INET6
+	case IPPROTO_ICMPV6:
+#endif /* INET6 */
+		break;
+	default:
+		return (1);
+	}
+
+	if (!hw_assist) {
+		switch (af) {
+		case AF_INET:
+			if (p == IPPROTO_ICMP) {
+				if (m->m_len < off)
+					return (1);
+				m->m_data += off;
+				m->m_len -= off;
+				sum = in_cksum(m, len);
+				m->m_data -= off;
+				m->m_len += off;
+			} else {
+				if (m->m_len < sizeof(struct ip))
+					return (1);
+				sum = in4_cksum(m, p, off, len);
+			}
+			break;
+#ifdef INET6
+		case AF_INET6:
+			if (m->m_len < sizeof(struct ip6_hdr))
+				return (1);
+			sum = in6_cksum(m, p, off, len);
+			break;
+#endif /* INET6 */
+		default:
+			return (1);
+		}
+	}
+	if (sum) {
+		switch (p) {
+		case IPPROTO_TCP:
+		    {
+			KMOD_TCPSTAT_INC(tcps_rcvbadsum);
+			break;
+		    }
+		case IPPROTO_UDP:
+		    {
+			KMOD_UDPSTAT_INC(udps_badsum);
+			break;
+		    }
+		case IPPROTO_ICMP:
+		    {
+			KMOD_ICMPSTAT_INC(icps_checksum);
+			break;
+		    }
+#ifdef INET6
+		case IPPROTO_ICMPV6:
+		    {
+			KMOD_ICMP6STAT_INC(icp6s_checksum);
+			break;
+		    }
+#endif /* INET6 */
+		}
+		return (1);
+	} else {
+		if (p == IPPROTO_TCP || p == IPPROTO_UDP) {
+			m->m_pkthdr.csum_flags |=
+			    (CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
+			m->m_pkthdr.csum_data = 0xffff;
+		}
+	}
+	return (0);
+}
+#else /* !__FreeBSD__ */
+/*
+ * check protocol (tcp/udp/icmp/icmp6) checksum and set mbuf flag
+ *   off is the offset where the protocol header starts
+ *   len is the total length of protocol header plus payload
+ * returns 0 when the checksum is valid, otherwise returns 1.
+ */
+int
+pf_check_proto_cksum(struct mbuf *m, int off, int len, u_int8_t p,
+    sa_family_t af)
+{
+	u_int16_t flag_ok, flag_bad;
+	u_int16_t sum;
+
+	switch (p) {
+	case IPPROTO_TCP:
+		flag_ok = M_TCP_CSUM_IN_OK;
+		flag_bad = M_TCP_CSUM_IN_BAD;
+		break;
+	case IPPROTO_UDP:
+		flag_ok = M_UDP_CSUM_IN_OK;
+		flag_bad = M_UDP_CSUM_IN_BAD;
+		break;
+	case IPPROTO_ICMP:
+#ifdef INET6
+	case IPPROTO_ICMPV6:
+#endif /* INET6 */
+		flag_ok = flag_bad = 0;
+		break;
+	default:
+		return (1);
+	}
+	if (m->m_pkthdr.csum_flags & flag_ok)
+		return (0);
+	if (m->m_pkthdr.csum_flags & flag_bad)
+		return (1);
+	if (off < sizeof(struct ip) || len < sizeof(struct udphdr))
+		return (1);
+	if (m->m_pkthdr.len < off + len)
+		return (1);
+	switch (af) {
+#ifdef INET
+	case AF_INET:
+		if (p == IPPROTO_ICMP) {
+			if (m->m_len < off)
+				return (1);
+			m->m_data += off;
+			m->m_len -= off;
+			sum = in_cksum(m, len);
+			m->m_data -= off;
+			m->m_len += off;
+		} else {
+			if (m->m_len < sizeof(struct ip))
+				return (1);
+			sum = in4_cksum(m, p, off, len);
+		}
+		break;
+#endif /* INET */
+#ifdef INET6
+	case AF_INET6:
+		if (m->m_len < sizeof(struct ip6_hdr))
+			return (1);
+		sum = in6_cksum(m, p, off, len);
+		break;
+#endif /* INET6 */
+	default:
+		return (1);
+	}
+	if (sum) {
+		m->m_pkthdr.csum_flags |= flag_bad;
+		switch (p) {
+		case IPPROTO_TCP:
+			KMOD_TCPSTAT_INC(tcps_rcvbadsum);
+			break;
+		case IPPROTO_UDP:
+			KMOD_UDPSTAT_INC(udps_badsum);
+			break;
+		case IPPROTO_ICMP:
+			KMOD_ICMPSTAT_INC(icps_checksum);
+			break;
+#ifdef INET6
+		case IPPROTO_ICMPV6:
+			KMOD_ICMP6STAT_INC(icp6s_checksum);
+			break;
+#endif /* INET6 */
+		}
+		return (1);
+	}
+	m->m_pkthdr.csum_flags |= flag_ok;
+	return (0);
+}
+#endif /* __FreeBSD__ */
+
+#ifdef INET
+int
+#ifdef __FreeBSD__
+pf_test(int dir, struct ifnet *ifp, struct mbuf **m0,
+    struct ether_header *eh, struct inpcb *inp)
+#else
+pf_test(int dir, struct ifnet *ifp, struct mbuf **m0,
+    struct ether_header *eh)
+#endif
+{
+	struct pfi_kif		*kif;
+	u_short			 action, reason = 0, log = 0;
+	struct mbuf		*m = *m0;
+	struct ip		*h = NULL;	/* make the compiler happy */
+	struct pf_rule		*a = NULL, *r = &pf_default_rule, *tr, *nr;
+	struct pf_state		*s = NULL;
+	struct pf_ruleset	*ruleset = NULL;
+	struct pf_pdesc		 pd;
+	int			 off, dirndx, pqid = 0;
+
+#ifdef __FreeBSD__
+	PF_LOCK();
+#endif
+	if (!pf_status.running)
+#ifdef __FreeBSD__
+	{
+		PF_UNLOCK();
+#endif
+		return (PF_PASS);
+#ifdef __FreeBSD__
+	}
+#endif
+
+	memset(&pd, 0, sizeof(pd));
+	if ((pd.pf_mtag = pf_get_mtag(m)) == NULL) {
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+#endif
+		DPFPRINTF(PF_DEBUG_URGENT,
+		    ("pf_test: pf_get_mtag returned NULL\n"));
+		return (PF_DROP);
+	}
+#ifdef __FreeBSD__
+	if (m->m_flags & M_SKIP_FIREWALL) {
+		PF_UNLOCK();
+		return (PF_PASS);
+	}
+#else
+	if (pd.pf_mtag->flags & PF_TAG_GENERATED)
+		return (PF_PASS);
+#endif
+
+#ifdef __FreeBSD__
+	/* XXX_IMPORT: later */
+#else
+	if (ifp->if_type == IFT_CARP && ifp->if_carpdev)
+		ifp = ifp->if_carpdev;
+#endif
+
+	kif = (struct pfi_kif *)ifp->if_pf_kif;
+	if (kif == NULL) {
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+#endif
+		DPFPRINTF(PF_DEBUG_URGENT,
+		    ("pf_test: kif == NULL, if_xname %s\n", ifp->if_xname));
+		return (PF_DROP);
+	}
+	if (kif->pfik_flags & PFI_IFLAG_SKIP) {
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+#endif
+		return (PF_PASS);
+	}
+
+#ifdef __FreeBSD__
+	M_ASSERTPKTHDR(m);
+#else
+#ifdef DIAGNOSTIC
+	if ((m->m_flags & M_PKTHDR) == 0)
+		panic("non-M_PKTHDR is passed to pf_test");
+#endif /* DIAGNOSTIC */
+#endif /* __FreeBSD__ */
+
+	if (m->m_pkthdr.len < (int)sizeof(*h)) {
+		action = PF_DROP;
+		REASON_SET(&reason, PFRES_SHORT);
+		log = 1;
+		goto done;
+	}
+
+	/* We do IP header normalization and packet reassembly here */
+	if (pf_normalize_ip(m0, dir, kif, &reason, &pd) != PF_PASS) {
+		action = PF_DROP;
+		goto done;
+	}
+	m = *m0;
+	h = mtod(m, struct ip *);
+
+	off = h->ip_hl << 2;
+	if (off < (int)sizeof(*h)) {
+		action = PF_DROP;
+		REASON_SET(&reason, PFRES_SHORT);
+		log = 1;
+		goto done;
+	}
+
+	pd.src = (struct pf_addr *)&h->ip_src;
+	pd.dst = (struct pf_addr *)&h->ip_dst;
+	PF_ACPY(&pd.baddr, dir == PF_OUT ? pd.src : pd.dst, AF_INET);
+	pd.ip_sum = &h->ip_sum;
+	pd.proto = h->ip_p;
+	pd.af = AF_INET;
+	pd.tos = h->ip_tos;
+	pd.tot_len = ntohs(h->ip_len);
+	pd.eh = eh;
+
+	/* handle fragments that didn't get reassembled by normalization */
+	if (h->ip_off & htons(IP_MF | IP_OFFMASK)) {
+		action = pf_test_fragment(&r, dir, kif, m, h,
+		    &pd, &a, &ruleset);
+		goto done;
+	}
+
+	switch (h->ip_p) {
+
+	case IPPROTO_TCP: {
+		struct tcphdr	th;
+
+		pd.hdr.tcp = &th;
+		if (!pf_pull_hdr(m, off, &th, sizeof(th),
+		    &action, &reason, AF_INET)) {
+			log = action != PF_PASS;
+			goto done;
+		}
+		if (dir == PF_IN && pf_check_proto_cksum(m, off,
+		    ntohs(h->ip_len) - off, IPPROTO_TCP, AF_INET)) {
+			REASON_SET(&reason, PFRES_PROTCKSUM);
+			action = PF_DROP;
+			goto done;
+		}
+		pd.p_len = pd.tot_len - off - (th.th_off << 2);
+		if ((th.th_flags & TH_ACK) && pd.p_len == 0)
+			pqid = 1;
+		action = pf_normalize_tcp(dir, kif, m, 0, off, h, &pd);
+		if (action == PF_DROP)
+			goto done;
+		action = pf_test_state_tcp(&s, dir, kif, m, off, h, &pd,
+		    &reason);
+		if (action == PF_PASS) {
+#if NPFSYNC
+			pfsync_update_state(s);
+#endif /* NPFSYNC */
+			r = s->rule.ptr;
+			a = s->anchor.ptr;
+			log = s->log;
+		} else if (s == NULL)
+#ifdef __FreeBSD__
+			action = pf_test_tcp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, NULL, inp);
+#else
+			action = pf_test_tcp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, &ipintrq);
+#endif
+		break;
+	}
+
+	case IPPROTO_UDP: {
+		struct udphdr	uh;
+
+		pd.hdr.udp = &uh;
+		if (!pf_pull_hdr(m, off, &uh, sizeof(uh),
+		    &action, &reason, AF_INET)) {
+			log = action != PF_PASS;
+			goto done;
+		}
+		if (dir == PF_IN && uh.uh_sum && pf_check_proto_cksum(m,
+		    off, ntohs(h->ip_len) - off, IPPROTO_UDP, AF_INET)) {
+			action = PF_DROP;
+			REASON_SET(&reason, PFRES_PROTCKSUM);
+			goto done;
+		}
+		if (uh.uh_dport == 0 ||
+		    ntohs(uh.uh_ulen) > m->m_pkthdr.len - off ||
+		    ntohs(uh.uh_ulen) < sizeof(struct udphdr)) {
+			action = PF_DROP;
+			REASON_SET(&reason, PFRES_SHORT);
+			goto done;
+		}
+		action = pf_test_state_udp(&s, dir, kif, m, off, h, &pd);
+		if (action == PF_PASS) {
+#if NPFSYNC
+			pfsync_update_state(s);
+#endif /* NPFSYNC */
+			r = s->rule.ptr;
+			a = s->anchor.ptr;
+			log = s->log;
+		} else if (s == NULL)
+#ifdef __FreeBSD__
+			action = pf_test_udp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, NULL, inp);
+#else
+			action = pf_test_udp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, &ipintrq);
+#endif
+		break;
+	}
+
+	case IPPROTO_ICMP: {
+		struct icmp	ih;
+
+		pd.hdr.icmp = &ih;
+		if (!pf_pull_hdr(m, off, &ih, ICMP_MINLEN,
+		    &action, &reason, AF_INET)) {
+			log = action != PF_PASS;
+			goto done;
+		}
+		if (dir == PF_IN && pf_check_proto_cksum(m, off,
+		    ntohs(h->ip_len) - off, IPPROTO_ICMP, AF_INET)) {
+			action = PF_DROP;
+			REASON_SET(&reason, PFRES_PROTCKSUM);
+			goto done;
+		}
+		action = pf_test_state_icmp(&s, dir, kif, m, off, h, &pd,
+		    &reason);
+		if (action == PF_PASS) {
+#if NPFSYNC
+			pfsync_update_state(s);
+#endif /* NPFSYNC */
+			r = s->rule.ptr;
+			a = s->anchor.ptr;
+			log = s->log;
+		} else if (s == NULL)
+#ifdef __FreeBSD__
+			action = pf_test_icmp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, NULL);
+#else
+			action = pf_test_icmp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, &ipintrq);
+#endif
+		break;
+	}
+
+	default:
+		action = pf_test_state_other(&s, dir, kif, &pd);
+		if (action == PF_PASS) {
+#if NPFSYNC
+			pfsync_update_state(s);
+#endif /* NPFSYNC */
+			r = s->rule.ptr;
+			a = s->anchor.ptr;
+			log = s->log;
+		} else if (s == NULL)
+#ifdef __FreeBSD__
+			action = pf_test_other(&r, &s, dir, kif, m, off, h,
+			    &pd, &a, &ruleset, NULL);
+#else
+			action = pf_test_other(&r, &s, dir, kif, m, off, h,
+			    &pd, &a, &ruleset, &ipintrq);
+#endif
+		break;
+	}
+
+done:
+	if (action == PF_PASS && h->ip_hl > 5 &&
+	    !((s && s->state_flags & PFSTATE_ALLOWOPTS) || r->allow_opts)) {
+		action = PF_DROP;
+		REASON_SET(&reason, PFRES_IPOPTIONS);
+		log = 1;
+		DPFPRINTF(PF_DEBUG_MISC,
+		    ("pf: dropping packet with ip options\n"));
+	}
+
+	if ((s && s->tag) || r->rtableid)
+		pf_tag_packet(m, pd.pf_mtag, s ? s->tag : 0, r->rtableid);
+
+#ifdef ALTQ
+	if (action == PF_PASS && r->qid) {
+		if (pqid || (pd.tos & IPTOS_LOWDELAY))
+			pd.pf_mtag->qid = r->pqid;
+		else
+			pd.pf_mtag->qid = r->qid;
+		/* add hints for ecn */
+		pd.pf_mtag->af = AF_INET;
+		pd.pf_mtag->hdr = h;
+	}
+#endif /* ALTQ */
+
+	/*
+	 * connections redirected to loopback should not match sockets
+	 * bound specifically to loopback due to security implications,
+	 * see tcp_input() and in_pcblookup_listen().
+	 */
+	if (dir == PF_IN && action == PF_PASS && (pd.proto == IPPROTO_TCP ||
+	    pd.proto == IPPROTO_UDP) && s != NULL && s->nat_rule.ptr != NULL &&
+	    (s->nat_rule.ptr->action == PF_RDR ||
+	    s->nat_rule.ptr->action == PF_BINAT) &&
+	    (ntohl(pd.dst->v4.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
+		pd.pf_mtag->flags |= PF_TAG_TRANSLATE_LOCALHOST;
+
+	if (log) {
+		struct pf_rule *lr;
+
+		if (s != NULL && s->nat_rule.ptr != NULL &&
+		    s->nat_rule.ptr->log & PF_LOG_ALL)
+			lr = s->nat_rule.ptr;
+		else
+			lr = r;
+		PFLOG_PACKET(kif, h, m, AF_INET, dir, reason, lr, a, ruleset,
+		    &pd);
+	}
+
+	kif->pfik_bytes[0][dir == PF_OUT][action != PF_PASS] += pd.tot_len;
+	kif->pfik_packets[0][dir == PF_OUT][action != PF_PASS]++;
+
+	if (action == PF_PASS || r->action == PF_DROP) {
+		dirndx = (dir == PF_OUT);
+		r->packets[dirndx]++;
+		r->bytes[dirndx] += pd.tot_len;
+		if (a != NULL) {
+			a->packets[dirndx]++;
+			a->bytes[dirndx] += pd.tot_len;
+		}
+		if (s != NULL) {
+			if (s->nat_rule.ptr != NULL) {
+				s->nat_rule.ptr->packets[dirndx]++;
+				s->nat_rule.ptr->bytes[dirndx] += pd.tot_len;
+			}
+			if (s->src_node != NULL) {
+				s->src_node->packets[dirndx]++;
+				s->src_node->bytes[dirndx] += pd.tot_len;
+			}
+			if (s->nat_src_node != NULL) {
+				s->nat_src_node->packets[dirndx]++;
+				s->nat_src_node->bytes[dirndx] += pd.tot_len;
+			}
+			dirndx = (dir == s->direction) ? 0 : 1;
+			s->packets[dirndx]++;
+			s->bytes[dirndx] += pd.tot_len;
+		}
+		tr = r;
+		nr = (s != NULL) ? s->nat_rule.ptr : pd.nat_rule;
+		if (nr != NULL) {
+			struct pf_addr *x;
+			/*
+			 * XXX: we need to make sure that the addresses
+			 * passed to pfr_update_stats() are the same than
+			 * the addresses used during matching (pfr_match)
+			 */
+			if (r == &pf_default_rule) {
+				tr = nr;
+				x = (s == NULL || s->direction == dir) ?
+				    &pd.baddr : &pd.naddr;
+			} else
+				x = (s == NULL || s->direction == dir) ?
+				    &pd.naddr : &pd.baddr;
+			if (x == &pd.baddr || s == NULL) {
+				/* we need to change the address */
+				if (dir == PF_OUT)
+					pd.src = x;
+				else
+					pd.dst = x;
+			}
+		}
+		if (tr->src.addr.type == PF_ADDR_TABLE)
+			pfr_update_stats(tr->src.addr.p.tbl, (s == NULL ||
+			    s->direction == dir) ? pd.src : pd.dst, pd.af,
+			    pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
+			    tr->src.neg);
+		if (tr->dst.addr.type == PF_ADDR_TABLE)
+			pfr_update_stats(tr->dst.addr.p.tbl, (s == NULL ||
+			    s->direction == dir) ? pd.dst : pd.src, pd.af,
+			    pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
+			    tr->dst.neg);
+	}
+
+
+	if (action == PF_SYNPROXY_DROP) {
+		m_freem(*m0);
+		*m0 = NULL;
+		action = PF_PASS;
+	} else if (r->rt)
+		/* pf_route can free the mbuf causing *m0 to become NULL */
+		pf_route(m0, r, dir, ifp, s, &pd);
+
+#ifdef __FreeBSD__
+	PF_UNLOCK();
+#endif
+
+	return (action);
+}
+#endif /* INET */
+
+#ifdef INET6
+int
+#ifdef __FreeBSD__
+pf_test6(int dir, struct ifnet *ifp, struct mbuf **m0,
+    struct ether_header *eh, struct inpcb *inp)
+#else
+pf_test6(int dir, struct ifnet *ifp, struct mbuf **m0,
+    struct ether_header *eh)
+#endif
+{
+	struct pfi_kif		*kif;
+	u_short			 action, reason = 0, log = 0;
+	struct mbuf		*m = *m0, *n = NULL;
+	struct ip6_hdr		*h;
+	struct pf_rule		*a = NULL, *r = &pf_default_rule, *tr, *nr;
+	struct pf_state		*s = NULL;
+	struct pf_ruleset	*ruleset = NULL;
+	struct pf_pdesc		 pd;
+	int			 off, terminal = 0, dirndx, rh_cnt = 0;
+
+#ifdef __FreeBSD__
+	PF_LOCK();
+#endif
+
+	if (!pf_status.running)
+#ifdef __FreeBSD__
+	{
+		PF_UNLOCK();
+#endif
+		return (PF_PASS);
+#ifdef __FreeBSD__
+	}
+#endif
+
+	memset(&pd, 0, sizeof(pd));
+	if ((pd.pf_mtag = pf_get_mtag(m)) == NULL) {
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+#endif
+		DPFPRINTF(PF_DEBUG_URGENT,
+		    ("pf_test6: pf_get_mtag returned NULL\n"));
+		return (PF_DROP);
+	}
+	if (pd.pf_mtag->flags & PF_TAG_GENERATED)
+		return (PF_PASS);
+
+#ifdef __FreeBSD__
+	/* XXX_IMPORT: later */
+#else
+	if (ifp->if_type == IFT_CARP && ifp->if_carpdev)
+		ifp = ifp->if_carpdev;
+#endif
+
+	kif = (struct pfi_kif *)ifp->if_pf_kif;
+	if (kif == NULL) {
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+#endif
+		DPFPRINTF(PF_DEBUG_URGENT,
+		    ("pf_test6: kif == NULL, if_xname %s\n", ifp->if_xname));
+		return (PF_DROP);
+	}
+	if (kif->pfik_flags & PFI_IFLAG_SKIP) {
+#ifdef __FreeBSD__
+		PF_UNLOCK();
+#endif
+		return (PF_PASS);
+	}
+
+#ifdef __FreeBSD__
+	M_ASSERTPKTHDR(m);
+#else
+#ifdef DIAGNOSTIC
+	if ((m->m_flags & M_PKTHDR) == 0)
+		panic("non-M_PKTHDR is passed to pf_test6");
+#endif /* DIAGNOSTIC */
+#endif
+
+#ifdef __FreeBSD__
+	h = NULL;	/* make the compiler happy */
+#endif
+
+	if (m->m_pkthdr.len < (int)sizeof(*h)) {
+		action = PF_DROP;
+		REASON_SET(&reason, PFRES_SHORT);
+		log = 1;
+		goto done;
+	}
+
+	/* We do IP header normalization and packet reassembly here */
+	if (pf_normalize_ip6(m0, dir, kif, &reason, &pd) != PF_PASS) {
+		action = PF_DROP;
+		goto done;
+	}
+	m = *m0;
+	h = mtod(m, struct ip6_hdr *);
+
+#if 1
+	/*
+	 * we do not support jumbogram yet.  if we keep going, zero ip6_plen
+	 * will do something bad, so drop the packet for now.
+	 */
+	if (htons(h->ip6_plen) == 0) {
+		action = PF_DROP;
+		REASON_SET(&reason, PFRES_NORM);	/*XXX*/
+		goto done;
+	}
+#endif
+
+	pd.src = (struct pf_addr *)&h->ip6_src;
+	pd.dst = (struct pf_addr *)&h->ip6_dst;
+	PF_ACPY(&pd.baddr, dir == PF_OUT ? pd.src : pd.dst, AF_INET6);
+	pd.ip_sum = NULL;
+	pd.af = AF_INET6;
+	pd.tos = 0;
+	pd.tot_len = ntohs(h->ip6_plen) + sizeof(struct ip6_hdr);
+	pd.eh = eh;
+
+	off = ((caddr_t)h - m->m_data) + sizeof(struct ip6_hdr);
+	pd.proto = h->ip6_nxt;
+	do {
+		switch (pd.proto) {
+		case IPPROTO_FRAGMENT:
+			action = pf_test_fragment(&r, dir, kif, m, h,
+			    &pd, &a, &ruleset);
+			if (action == PF_DROP)
+				REASON_SET(&reason, PFRES_FRAG);
+			goto done;
+		case IPPROTO_ROUTING: {
+			struct ip6_rthdr rthdr;
+
+			if (rh_cnt++) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: IPv6 more than one rthdr\n"));
+				action = PF_DROP;
+				REASON_SET(&reason, PFRES_IPOPTIONS);
+				log = 1;
+				goto done;
+			}
+			if (!pf_pull_hdr(m, off, &rthdr, sizeof(rthdr), NULL,
+			    &reason, pd.af)) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: IPv6 short rthdr\n"));
+				action = PF_DROP;
+				REASON_SET(&reason, PFRES_SHORT);
+				log = 1;
+				goto done;
+			}
+			if (rthdr.ip6r_type == IPV6_RTHDR_TYPE_0) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: IPv6 rthdr0\n"));
+				action = PF_DROP;
+				REASON_SET(&reason, PFRES_IPOPTIONS);
+				log = 1;
+				goto done;
+			}
+			/* fallthrough */
+		}
+		case IPPROTO_AH:
+		case IPPROTO_HOPOPTS:
+		case IPPROTO_DSTOPTS: {
+			/* get next header and header length */
+			struct ip6_ext	opt6;
+
+			if (!pf_pull_hdr(m, off, &opt6, sizeof(opt6),
+			    NULL, &reason, pd.af)) {
+				DPFPRINTF(PF_DEBUG_MISC,
+				    ("pf: IPv6 short opt\n"));
+				action = PF_DROP;
+				log = 1;
+				goto done;
+			}
+			if (pd.proto == IPPROTO_AH)
+				off += (opt6.ip6e_len + 2) * 4;
+			else
+				off += (opt6.ip6e_len + 1) * 8;
+			pd.proto = opt6.ip6e_nxt;
+			/* goto the next header */
+			break;
+		}
+		default:
+			terminal++;
+			break;
+		}
+	} while (!terminal);
+
+	/* if there's no routing header, use unmodified mbuf for checksumming */
+	if (!n)
+		n = m;
+
+	switch (pd.proto) {
+
+	case IPPROTO_TCP: {
+		struct tcphdr	th;
+
+		pd.hdr.tcp = &th;
+		if (!pf_pull_hdr(m, off, &th, sizeof(th),
+		    &action, &reason, AF_INET6)) {
+			log = action != PF_PASS;
+			goto done;
+		}
+		if (dir == PF_IN && pf_check_proto_cksum(n, off,
+		    ntohs(h->ip6_plen) - (off - sizeof(struct ip6_hdr)),
+		    IPPROTO_TCP, AF_INET6)) {
+			action = PF_DROP;
+			REASON_SET(&reason, PFRES_PROTCKSUM);
+			goto done;
+		}
+		pd.p_len = pd.tot_len - off - (th.th_off << 2);
+		action = pf_normalize_tcp(dir, kif, m, 0, off, h, &pd);
+		if (action == PF_DROP)
+			goto done;
+		action = pf_test_state_tcp(&s, dir, kif, m, off, h, &pd,
+		    &reason);
+		if (action == PF_PASS) {
+#if NPFSYNC
+			pfsync_update_state(s);
+#endif /* NPFSYNC */
+			r = s->rule.ptr;
+			a = s->anchor.ptr;
+			log = s->log;
+		} else if (s == NULL)
+#ifdef __FreeBSD__
+			action = pf_test_tcp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, NULL, inp);
+#else
+			action = pf_test_tcp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, &ip6intrq);
+#endif
+		break;
+	}
+
+	case IPPROTO_UDP: {
+		struct udphdr	uh;
+
+		pd.hdr.udp = &uh;
+		if (!pf_pull_hdr(m, off, &uh, sizeof(uh),
+		    &action, &reason, AF_INET6)) {
+			log = action != PF_PASS;
+			goto done;
+		}
+		if (dir == PF_IN && uh.uh_sum && pf_check_proto_cksum(n,
+		    off, ntohs(h->ip6_plen) - (off - sizeof(struct ip6_hdr)),
+		    IPPROTO_UDP, AF_INET6)) {
+			action = PF_DROP;
+			REASON_SET(&reason, PFRES_PROTCKSUM);
+			goto done;
+		}
+		if (uh.uh_dport == 0 ||
+		    ntohs(uh.uh_ulen) > m->m_pkthdr.len - off ||
+		    ntohs(uh.uh_ulen) < sizeof(struct udphdr)) {
+			action = PF_DROP;
+			REASON_SET(&reason, PFRES_SHORT);
+			goto done;
+		}
+		action = pf_test_state_udp(&s, dir, kif, m, off, h, &pd);
+		if (action == PF_PASS) {
+#if NPFSYNC
+			pfsync_update_state(s);
+#endif /* NPFSYNC */
+			r = s->rule.ptr;
+			a = s->anchor.ptr;
+			log = s->log;
+		} else if (s == NULL)
+#ifdef __FreeBSD__
+			action = pf_test_udp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, NULL, inp);
+#else
+			action = pf_test_udp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, &ip6intrq);
+#endif
+		break;
+	}
+
+	case IPPROTO_ICMPV6: {
+		struct icmp6_hdr	ih;
+
+		pd.hdr.icmp6 = &ih;
+		if (!pf_pull_hdr(m, off, &ih, sizeof(ih),
+		    &action, &reason, AF_INET6)) {
+			log = action != PF_PASS;
+			goto done;
+		}
+		if (dir == PF_IN && pf_check_proto_cksum(n, off,
+		    ntohs(h->ip6_plen) - (off - sizeof(struct ip6_hdr)),
+		    IPPROTO_ICMPV6, AF_INET6)) {
+			action = PF_DROP;
+			REASON_SET(&reason, PFRES_PROTCKSUM);
+			goto done;
+		}
+		action = pf_test_state_icmp(&s, dir, kif,
+		    m, off, h, &pd, &reason);
+		if (action == PF_PASS) {
+#if NPFSYNC
+			pfsync_update_state(s);
+#endif /* NPFSYNC */
+			r = s->rule.ptr;
+			a = s->anchor.ptr;
+			log = s->log;
+		} else if (s == NULL)
+#ifdef __FreeBSD__
+			action = pf_test_icmp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, NULL);
+#else
+			action = pf_test_icmp(&r, &s, dir, kif,
+			    m, off, h, &pd, &a, &ruleset, &ip6intrq);
+#endif
+		break;
+	}
+
+	default:
+		action = pf_test_state_other(&s, dir, kif, &pd);
+		if (action == PF_PASS) {
+#if NPFSYNC
+			pfsync_update_state(s);
+#endif /* NPFSYNC */
+			r = s->rule.ptr;
+			a = s->anchor.ptr;
+			log = s->log;
+		} else if (s == NULL)
+#ifdef __FreeBSD__
+			action = pf_test_other(&r, &s, dir, kif, m, off, h,
+			    &pd, &a, &ruleset, NULL);
+#else
+			action = pf_test_other(&r, &s, dir, kif, m, off, h,
+			    &pd, &a, &ruleset, &ip6intrq);
+#endif
+		break;
+	}
+
+done:
+	/* handle dangerous IPv6 extension headers. */
+	if (action == PF_PASS && rh_cnt &&
+	    !((s && s->state_flags & PFSTATE_ALLOWOPTS) || r->allow_opts)) {
+		action = PF_DROP;
+		REASON_SET(&reason, PFRES_IPOPTIONS);
+		log = 1;
+		DPFPRINTF(PF_DEBUG_MISC,
+		    ("pf: dropping packet with dangerous v6 headers\n"));
+	}
+
+	if ((s && s->tag) || r->rtableid)
+		pf_tag_packet(m, pd.pf_mtag, s ? s->tag : 0, r->rtableid);
+
+#ifdef ALTQ
+	if (action == PF_PASS && r->qid) {
+		if (pd.tos & IPTOS_LOWDELAY)
+			pd.pf_mtag->qid = r->pqid;
+		else
+			pd.pf_mtag->qid = r->qid;
+		/* add hints for ecn */
+		pd.pf_mtag->af = AF_INET6;
+		pd.pf_mtag->hdr = h;
+	}
+#endif /* ALTQ */
+
+	if (dir == PF_IN && action == PF_PASS && (pd.proto == IPPROTO_TCP ||
+	    pd.proto == IPPROTO_UDP) && s != NULL && s->nat_rule.ptr != NULL &&
+	    (s->nat_rule.ptr->action == PF_RDR ||
+	    s->nat_rule.ptr->action == PF_BINAT) &&
+	    IN6_IS_ADDR_LOOPBACK(&pd.dst->v6))
+		pd.pf_mtag->flags |= PF_TAG_TRANSLATE_LOCALHOST;
+
+	if (log) {
+		struct pf_rule *lr;
+
+		if (s != NULL && s->nat_rule.ptr != NULL &&
+		    s->nat_rule.ptr->log & PF_LOG_ALL)
+			lr = s->nat_rule.ptr;
+		else
+			lr = r;
+		PFLOG_PACKET(kif, h, m, AF_INET6, dir, reason, lr, a, ruleset,
+		    &pd);
+	}
+
+	kif->pfik_bytes[1][dir == PF_OUT][action != PF_PASS] += pd.tot_len;
+	kif->pfik_packets[1][dir == PF_OUT][action != PF_PASS]++;
+
+	if (action == PF_PASS || r->action == PF_DROP) {
+		dirndx = (dir == PF_OUT);
+		r->packets[dirndx]++;
+		r->bytes[dirndx] += pd.tot_len;
+		if (a != NULL) {
+			a->packets[dirndx]++;
+			a->bytes[dirndx] += pd.tot_len;
+		}
+		if (s != NULL) {
+			if (s->nat_rule.ptr != NULL) {
+				s->nat_rule.ptr->packets[dirndx]++;
+				s->nat_rule.ptr->bytes[dirndx] += pd.tot_len;
+			}
+			if (s->src_node != NULL) {
+				s->src_node->packets[dirndx]++;
+				s->src_node->bytes[dirndx] += pd.tot_len;
+			}
+			if (s->nat_src_node != NULL) {
+				s->nat_src_node->packets[dirndx]++;
+				s->nat_src_node->bytes[dirndx] += pd.tot_len;
+			}
+			dirndx = (dir == s->direction) ? 0 : 1;
+			s->packets[dirndx]++;
+			s->bytes[dirndx] += pd.tot_len;
+		}
+		tr = r;
+		nr = (s != NULL) ? s->nat_rule.ptr : pd.nat_rule;
+		if (nr != NULL) {
+			struct pf_addr *x;
+			/*
+			 * XXX: we need to make sure that the addresses
+			 * passed to pfr_update_stats() are the same than
+			 * the addresses used during matching (pfr_match)
+			 */
+			if (r == &pf_default_rule) {
+				tr = nr;
+				x = (s == NULL || s->direction == dir) ?
+				    &pd.baddr : &pd.naddr;
+			} else {
+				x = (s == NULL || s->direction == dir) ?
+				    &pd.naddr : &pd.baddr;
+			}
+			if (x == &pd.baddr || s == NULL) {
+				if (dir == PF_OUT)
+					pd.src = x;
+				else
+					pd.dst = x;
+			}
+		}
+		if (tr->src.addr.type == PF_ADDR_TABLE)
+			pfr_update_stats(tr->src.addr.p.tbl, (s == NULL ||
+			    s->direction == dir) ? pd.src : pd.dst, pd.af,
+			    pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
+			    tr->src.neg);
+		if (tr->dst.addr.type == PF_ADDR_TABLE)
+			pfr_update_stats(tr->dst.addr.p.tbl, (s == NULL ||
+			    s->direction == dir) ? pd.dst : pd.src, pd.af,
+			    pd.tot_len, dir == PF_OUT, r->action == PF_PASS,
+			    tr->dst.neg);
+	}
+
+
+	if (action == PF_SYNPROXY_DROP) {
+		m_freem(*m0);
+		*m0 = NULL;
+		action = PF_PASS;
+	} else if (r->rt)
+		/* pf_route6 can free the mbuf causing *m0 to become NULL */
+		pf_route6(m0, r, dir, ifp, s, &pd);
+
+#ifdef __FreeBSD__
+	PF_UNLOCK();
+#endif
+	return (action);
+}
+#endif /* INET6 */
+
+int
+pf_check_congestion(struct ifqueue *ifq)
+{
+#ifdef __FreeBSD__
+	/* XXX_IMPORT: later */
+	return (0);
+#else
+	if (ifq->ifq_congestion)
+		return (1);
+	else
+		return (0);
+#endif
+}