o Create directory sys/netpfil, where all packet filters should

  reside, and move there ipfw(4) and pf(4).

o Move most modified parts of pf out of contrib.

Actual movements:

sys/contrib/pf/net/*.c		-> sys/netpfil/pf/
sys/contrib/pf/net/*.h		-> sys/net/
contrib/pf/pfctl/*.c		-> sbin/pfctl
contrib/pf/pfctl/*.h		-> sbin/pfctl
contrib/pf/pfctl/pfctl.8	-> sbin/pfctl
contrib/pf/pfctl/*.4		-> share/man/man4
contrib/pf/pfctl/*.5		-> share/man/man5

sys/netinet/ipfw		-> sys/netpfil/ipfw

The arguable movement is pf/net/*.h -> sys/net. There are
future plans to refactor pf includes, so I decided not to
break things twice.

Not modified bits of pf left in contrib: authpf, ftp-proxy,
tftp-proxy, pflogd.

The ipfw(4) movement is planned to be merged to stable/9,
to make head and stable match.

Discussed with:		bz, luigi

4 files changed, 2387 insertions, 0 deletions

diff --git a/sys/net/if_pflog.h b/sys/net/if_pflog.h
new file mode 100644
index 0000000..0faeb7d
--- /dev/null
+++ b/sys/net/if_pflog.h
@@ -0,0 +1,66 @@
+/* $OpenBSD: if_pflog.h,v 1.13 2006/10/23 12:46:09 henning Exp $ */
+/*
+ * Copyright 2001 Niels Provos <provos@citi.umich.edu>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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 AUTHOR ``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 AUTHOR 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.
+ */
+
+#ifndef _NET_IF_PFLOG_H_
+#define	_NET_IF_PFLOG_H_
+
+#define	PFLOGIFS_MAX	16
+
+#define	PFLOG_RULESET_NAME_SIZE	16
+
+struct pfloghdr {
+	u_int8_t	length;
+	sa_family_t	af;
+	u_int8_t	action;
+	u_int8_t	reason;
+	char		ifname[IFNAMSIZ];
+	char		ruleset[PFLOG_RULESET_NAME_SIZE];
+	u_int32_t	rulenr;
+	u_int32_t	subrulenr;
+	uid_t		uid;
+	pid_t		pid;
+	uid_t		rule_uid;
+	pid_t		rule_pid;
+	u_int8_t	dir;
+	u_int8_t	pad[3];
+};
+
+#define	PFLOG_HDRLEN		sizeof(struct pfloghdr)
+/* minus pad, also used as a signature */
+#define	PFLOG_REAL_HDRLEN	offsetof(struct pfloghdr, pad)
+
+#ifdef _KERNEL
+struct pf_rule;
+struct pf_ruleset;
+struct pfi_kif;
+struct pf_pdesc;
+
+#define	PFLOG_PACKET(i,a,b,c,d,e,f,g,h,di) do {		\
+	if (pflog_packet_ptr != NULL)			\
+		pflog_packet_ptr(i,a,b,c,d,e,f,g,h,di);	\
+} while (0)
+#endif /* _KERNEL */
+#endif /* _NET_IF_PFLOG_H_ */
diff --git a/sys/net/if_pfsync.h b/sys/net/if_pfsync.h
new file mode 100644
index 0000000..5e71dd8
--- /dev/null
+++ b/sys/net/if_pfsync.h
@@ -0,0 +1,298 @@
+/*	$OpenBSD: if_pfsync.h,v 1.35 2008/06/29 08:42:15 mcbride Exp $	*/
+
+/*
+ * Copyright (c) 2001 Michael Shalayeff
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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 AUTHOR ``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 AUTHOR OR HIS RELATIVES 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 MIND, 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.
+ */
+
+/*
+ * Copyright (c) 2008 David Gwynne <dlg@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _NET_IF_PFSYNC_H_
+#define	_NET_IF_PFSYNC_H_
+
+#define	PFSYNC_VERSION		5
+#define	PFSYNC_DFLTTL		255
+
+#define	PFSYNC_ACT_CLR		0	/* clear all states */
+#define	PFSYNC_ACT_INS		1	/* insert state */
+#define	PFSYNC_ACT_INS_ACK	2	/* ack of insterted state */
+#define	PFSYNC_ACT_UPD		3	/* update state */
+#define	PFSYNC_ACT_UPD_C	4	/* "compressed" update state */
+#define	PFSYNC_ACT_UPD_REQ	5	/* request "uncompressed" state */
+#define	PFSYNC_ACT_DEL		6	/* delete state */
+#define	PFSYNC_ACT_DEL_C	7	/* "compressed" delete state */
+#define	PFSYNC_ACT_INS_F	8	/* insert fragment */
+#define	PFSYNC_ACT_DEL_F	9	/* delete fragments */
+#define	PFSYNC_ACT_BUS		10	/* bulk update status */
+#define	PFSYNC_ACT_TDB		11	/* TDB replay counter update */
+#define	PFSYNC_ACT_EOF		12	/* end of frame */
+#define	PFSYNC_ACT_MAX		13
+
+#define	PFSYNC_ACTIONS		"CLR ST",		\
+				"INS ST",		\
+				"INS ST ACK",		\
+				"UPD ST",		\
+				"UPD ST COMP",		\
+				"UPD ST REQ",		\
+				"DEL ST",		\
+				"DEL ST COMP",		\
+				"INS FR",		\
+				"DEL FR",		\
+				"BULK UPD STAT",	\
+				"TDB UPD",		\
+				"EOF"
+
+#define	PFSYNC_HMAC_LEN	20
+
+/*
+ * A pfsync frame is built from a header followed by several sections which
+ * are all prefixed with their own subheaders. Frames must be terminated with
+ * an EOF subheader.
+ *
+ * | ...			|
+ * | IP header			|
+ * +============================+
+ * | pfsync_header		|
+ * +----------------------------+
+ * | pfsync_subheader		|
+ * +----------------------------+
+ * | first action fields	|
+ * | ...			|
+ * +----------------------------+
+ * | pfsync_subheader		|
+ * +----------------------------+
+ * | second action fields	|
+ * | ...			|
+ * +----------------------------+
+ * | EOF pfsync_subheader	|
+ * +----------------------------+
+ * | HMAC			|
+ * +============================+
+ */
+
+/*
+ * Frame header
+ */
+
+struct pfsync_header {
+	u_int8_t			version;
+	u_int8_t			_pad;
+	u_int16_t			len;
+	u_int8_t			pfcksum[PF_MD5_DIGEST_LENGTH];
+} __packed;
+
+/*
+ * Frame region subheader
+ */
+
+struct pfsync_subheader {
+	u_int8_t			action;
+	u_int8_t			_pad;
+	u_int16_t			count;
+} __packed;
+
+/*
+ * CLR
+ */
+
+struct pfsync_clr {
+	char				ifname[IFNAMSIZ];
+	u_int32_t			creatorid;
+} __packed;
+
+/*
+ * INS, UPD, DEL
+ */
+
+/* these use struct pfsync_state in pfvar.h */
+
+/*
+ * INS_ACK
+ */
+
+struct pfsync_ins_ack {
+	u_int64_t			id;
+	u_int32_t			creatorid;
+} __packed;
+
+/*
+ * UPD_C
+ */
+
+struct pfsync_upd_c {
+	u_int64_t			id;
+	struct pfsync_state_peer	src;
+	struct pfsync_state_peer	dst;
+	u_int32_t			creatorid;
+	u_int32_t			expire;
+	u_int8_t			timeout;
+	u_int8_t			_pad[3];
+} __packed;
+
+/*
+ * UPD_REQ
+ */
+
+struct pfsync_upd_req {
+	u_int64_t			id;
+	u_int32_t			creatorid;
+} __packed;
+
+/*
+ * DEL_C
+ */
+
+struct pfsync_del_c {
+	u_int64_t			id;
+	u_int32_t			creatorid;
+} __packed;
+
+/*
+ * INS_F, DEL_F
+ */
+
+/* not implemented (yet) */
+
+/*
+ * BUS
+ */
+
+struct pfsync_bus {
+	u_int32_t			creatorid;
+	u_int32_t			endtime;
+	u_int8_t			status;
+#define	PFSYNC_BUS_START			1
+#define	PFSYNC_BUS_END				2
+	u_int8_t			_pad[3];
+} __packed;
+
+/*
+ * TDB
+ */
+
+struct pfsync_tdb {
+	u_int32_t			spi;
+	union sockaddr_union		dst;
+	u_int32_t			rpl;
+	u_int64_t			cur_bytes;
+	u_int8_t			sproto;
+	u_int8_t			updates;
+	u_int8_t			_pad[2];
+} __packed;
+
+/*
+ * EOF
+ */
+
+struct pfsync_eof {
+	u_int8_t			hmac[PFSYNC_HMAC_LEN];
+} __packed;
+
+#define	PFSYNC_HDRLEN		sizeof(struct pfsync_header)
+
+
+
+/*
+ * Names for PFSYNC sysctl objects
+ */
+#define	PFSYNCCTL_STATS		1	/* PFSYNC stats */
+#define	PFSYNCCTL_MAXID		2
+
+#define	PFSYNCCTL_NAMES { \
+	{ 0, 0 }, \
+	{ "stats", CTLTYPE_STRUCT }, \
+}
+
+struct pfsyncstats {
+	u_int64_t	pfsyncs_ipackets;	/* total input packets, IPv4 */
+	u_int64_t	pfsyncs_ipackets6;	/* total input packets, IPv6 */
+	u_int64_t	pfsyncs_badif;		/* not the right interface */
+	u_int64_t	pfsyncs_badttl;		/* TTL is not PFSYNC_DFLTTL */
+	u_int64_t	pfsyncs_hdrops;		/* packets shorter than hdr */
+	u_int64_t	pfsyncs_badver;		/* bad (incl unsupp) version */
+	u_int64_t	pfsyncs_badact;		/* bad action */
+	u_int64_t	pfsyncs_badlen;		/* data length does not match */
+	u_int64_t	pfsyncs_badauth;	/* bad authentication */
+	u_int64_t	pfsyncs_stale;		/* stale state */
+	u_int64_t	pfsyncs_badval;		/* bad values */
+	u_int64_t	pfsyncs_badstate;	/* insert/lookup failed */
+
+	u_int64_t	pfsyncs_opackets;	/* total output packets, IPv4 */
+	u_int64_t	pfsyncs_opackets6;	/* total output packets, IPv6 */
+	u_int64_t	pfsyncs_onomem;		/* no memory for an mbuf */
+	u_int64_t	pfsyncs_oerrors;	/* ip output error */
+
+	u_int64_t	pfsyncs_iacts[PFSYNC_ACT_MAX];
+	u_int64_t	pfsyncs_oacts[PFSYNC_ACT_MAX];
+};
+
+/*
+ * Configuration structure for SIOCSETPFSYNC SIOCGETPFSYNC
+ */
+struct pfsyncreq {
+	char		 pfsyncr_syncdev[IFNAMSIZ];
+	struct in_addr	 pfsyncr_syncpeer;
+	int		 pfsyncr_maxupdates;
+	int		 pfsyncr_defer;
+};
+
+#define	SIOCSETPFSYNC   _IOW('i', 247, struct ifreq)
+#define	SIOCGETPFSYNC   _IOWR('i', 248, struct ifreq)
+
+#ifdef _KERNEL
+
+/*
+ * this shows where a pf state is with respect to the syncing.
+ */
+#define	PFSYNC_S_INS	0x00
+#define	PFSYNC_S_IACK	0x01
+#define	PFSYNC_S_UPD	0x02
+#define	PFSYNC_S_UPD_C	0x03
+#define	PFSYNC_S_DEL	0x04
+#define	PFSYNC_S_COUNT	0x05
+
+#define	PFSYNC_S_DEFER	0xfe
+#define	PFSYNC_S_NONE	0xff
+
+#define	PFSYNC_SI_IOCTL		0x01
+#define	PFSYNC_SI_CKSUM		0x02
+#define	PFSYNC_SI_ACK		0x04
+
+#endif /* _KERNEL */
+
+#endif /* _NET_IF_PFSYNC_H_ */
diff --git a/sys/net/pf_mtag.h b/sys/net/pf_mtag.h
new file mode 100644
index 0000000..baff00a
--- /dev/null
+++ b/sys/net/pf_mtag.h
@@ -0,0 +1,62 @@
+/*	$FreeBSD$	*/
+/*
+ * Copyright (c) 2001 Daniel Hartmeier
+ * 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.
+ *
+ */
+
+#ifndef _NET_PF_MTAG_H_
+#define _NET_PF_MTAG_H_
+
+#ifdef _KERNEL
+
+#define	PF_TAG_GENERATED		0x01
+#define	PF_TAG_FRAGCACHE		0x02
+#define	PF_TAG_TRANSLATE_LOCALHOST	0x04
+#define	PF_PACKET_LOOPED		0x08
+#define	PF_FASTFWD_OURS_PRESENT		0x10
+
+struct pf_mtag {
+	void		*hdr;		/* saved hdr pos in mbuf, for ECN */
+	u_int32_t	 qid;		/* queue id */
+	u_int16_t	 tag;		/* tag id */
+	u_int8_t	 flags;
+	u_int8_t	 routed;
+};
+
+static __inline 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));
+}
+#endif /* _KERNEL */
+#endif /* _NET_PF_MTAG_H_ */
diff --git a/sys/net/pfvar.h b/sys/net/pfvar.h
new file mode 100644
index 0000000..ca4e449
--- /dev/null
+++ b/sys/net/pfvar.h
@@ -0,0 +1,1961 @@
+/*	$OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ */
+
+/*
+ * Copyright (c) 2001 Daniel Hartmeier
+ * 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.
+ *
+ */
+
+#ifndef _NET_PFVAR_H_
+#define _NET_PFVAR_H_
+
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/refcount.h>
+#include <sys/tree.h>
+
+#include <net/radix.h>
+#include <netinet/in.h>
+
+#include <net/pf_mtag.h>
+
+#define	PF_TCPS_PROXY_SRC	((TCP_NSTATES)+0)
+#define	PF_TCPS_PROXY_DST	((TCP_NSTATES)+1)
+
+#define	PF_MD5_DIGEST_LENGTH	16
+#ifdef MD5_DIGEST_LENGTH
+#if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
+#error
+#endif
+#endif
+
+enum	{ PF_INOUT, PF_IN, PF_OUT };
+enum	{ PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
+	  PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER };
+enum	{ PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
+	  PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
+enum	{ PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
+	  PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
+enum	{ PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
+enum	{ PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
+	  PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
+	  PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
+enum	{ PF_GET_NONE, PF_GET_CLR_CNTR };
+enum	{ PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH };
+
+/*
+ * Note about PFTM_*: real indices into pf_rule.timeout[] come before
+ * PFTM_MAX, special cases afterwards. See pf_state_expires().
+ */
+enum	{ PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
+	  PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
+	  PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
+	  PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
+	  PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
+	  PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
+	  PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
+	  PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED,
+	  PFTM_UNTIL_PACKET };
+
+/* PFTM default values */
+#define PFTM_TCP_FIRST_PACKET_VAL	120	/* First TCP packet */
+#define PFTM_TCP_OPENING_VAL		30	/* No response yet */
+#define PFTM_TCP_ESTABLISHED_VAL	24*60*60/* Established */
+#define PFTM_TCP_CLOSING_VAL		15 * 60	/* Half closed */
+#define PFTM_TCP_FIN_WAIT_VAL		45	/* Got both FINs */
+#define PFTM_TCP_CLOSED_VAL		90	/* Got a RST */
+#define PFTM_UDP_FIRST_PACKET_VAL	60	/* First UDP packet */
+#define PFTM_UDP_SINGLE_VAL		30	/* Unidirectional */
+#define PFTM_UDP_MULTIPLE_VAL		60	/* Bidirectional */
+#define PFTM_ICMP_FIRST_PACKET_VAL	20	/* First ICMP packet */
+#define PFTM_ICMP_ERROR_REPLY_VAL	10	/* Got error response */
+#define PFTM_OTHER_FIRST_PACKET_VAL	60	/* First packet */
+#define PFTM_OTHER_SINGLE_VAL		30	/* Unidirectional */
+#define PFTM_OTHER_MULTIPLE_VAL		60	/* Bidirectional */
+#define PFTM_FRAG_VAL			30	/* Fragment expire */
+#define PFTM_INTERVAL_VAL		10	/* Expire interval */
+#define PFTM_SRC_NODE_VAL		0	/* Source tracking */
+#define PFTM_TS_DIFF_VAL		30	/* Allowed TS diff */
+
+enum	{ PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
+enum	{ PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
+	  PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
+#define PF_POOL_IDMASK		0x0f
+enum	{ PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
+	  PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
+enum	{ PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
+	  PF_ADDR_TABLE, PF_ADDR_URPFFAILED,
+	  PF_ADDR_RANGE };
+#define PF_POOL_TYPEMASK	0x0f
+#define PF_POOL_STICKYADDR	0x20
+#define	PF_WSCALE_FLAG		0x80
+#define	PF_WSCALE_MASK		0x0f
+
+#define	PF_LOG			0x01
+#define	PF_LOG_ALL		0x02
+#define	PF_LOG_SOCKET_LOOKUP	0x04
+
+struct pf_addr {
+	union {
+		struct in_addr		v4;
+		struct in6_addr		v6;
+		u_int8_t		addr8[16];
+		u_int16_t		addr16[8];
+		u_int32_t		addr32[4];
+	} pfa;		    /* 128-bit address */
+#define v4	pfa.v4
+#define v6	pfa.v6
+#define addr8	pfa.addr8
+#define addr16	pfa.addr16
+#define addr32	pfa.addr32
+};
+
+#define	PF_TABLE_NAME_SIZE	 32
+
+#define PFI_AFLAG_NETWORK	0x01
+#define PFI_AFLAG_BROADCAST	0x02
+#define PFI_AFLAG_PEER		0x04
+#define PFI_AFLAG_MODEMASK	0x07
+#define PFI_AFLAG_NOALIAS	0x08
+
+struct pf_addr_wrap {
+	union {
+		struct {
+			struct pf_addr		 addr;
+			struct pf_addr		 mask;
+		}			 a;
+		char			 ifname[IFNAMSIZ];
+		char			 tblname[PF_TABLE_NAME_SIZE];
+	}			 v;
+	union {
+		struct pfi_dynaddr	*dyn;
+		struct pfr_ktable	*tbl;
+		int			 dyncnt;
+		int			 tblcnt;
+	}			 p;
+	u_int8_t		 type;		/* PF_ADDR_* */
+	u_int8_t		 iflags;	/* PFI_AFLAG_* */
+};
+
+#ifdef _KERNEL
+
+struct pfi_dynaddr {
+	TAILQ_ENTRY(pfi_dynaddr)	 entry;
+	struct pf_addr			 pfid_addr4;
+	struct pf_addr			 pfid_mask4;
+	struct pf_addr			 pfid_addr6;
+	struct pf_addr			 pfid_mask6;
+	struct pfr_ktable		*pfid_kt;
+	struct pfi_kif			*pfid_kif;
+	int				 pfid_net;	/* mask or 128 */
+	int				 pfid_acnt4;	/* address count IPv4 */
+	int				 pfid_acnt6;	/* address count IPv6 */
+	sa_family_t			 pfid_af;	/* rule af */
+	u_int8_t			 pfid_iflags;	/* PFI_AFLAG_* */
+};
+
+/*
+ * Address manipulation macros
+ */
+#define	HTONL(x)	(x) = htonl((__uint32_t)(x))
+#define	HTONS(x)	(x) = htons((__uint16_t)(x))
+#define	NTOHL(x)	(x) = ntohl((__uint32_t)(x))
+#define	NTOHS(x)	(x) = ntohs((__uint16_t)(x))
+
+#define	PF_NAME		"pf"
+
+#define	PF_HASHROW_ASSERT(h)	mtx_assert(&(h)->lock, MA_OWNED)
+#define	PF_HASHROW_LOCK(h)	mtx_lock(&(h)->lock)
+#define	PF_HASHROW_UNLOCK(h)	mtx_unlock(&(h)->lock)
+
+#define	PF_STATE_LOCK(s)						\
+	do {								\
+		struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)];	\
+		PF_HASHROW_LOCK(_ih);					\
+	} while (0)
+
+#define	PF_STATE_UNLOCK(s)						\
+	do {								\
+		struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))];	\
+		PF_HASHROW_UNLOCK(_ih);					\
+	} while (0)
+
+#ifdef INVARIANTS
+#define	PF_STATE_LOCK_ASSERT(s)						\
+	do {								\
+		struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)];	\
+		PF_HASHROW_ASSERT(_ih);					\
+	} while (0)
+#else /* !INVARIANTS */
+#define	PF_STATE_LOCK_ASSERT(s)		do {} while (0)
+#endif /* INVARIANTS */
+
+extern struct mtx pf_unlnkdrules_mtx;
+#define	PF_UNLNKDRULES_LOCK()	mtx_lock(&pf_unlnkdrules_mtx)
+#define	PF_UNLNKDRULES_UNLOCK()	mtx_unlock(&pf_unlnkdrules_mtx)
+
+extern struct rwlock pf_rules_lock;
+#define	PF_RULES_RLOCK()	rw_rlock(&pf_rules_lock)
+#define	PF_RULES_RUNLOCK()	rw_runlock(&pf_rules_lock)
+#define	PF_RULES_WLOCK()	rw_wlock(&pf_rules_lock)
+#define	PF_RULES_WUNLOCK()	rw_wunlock(&pf_rules_lock)
+#define	PF_RULES_ASSERT()	rw_assert(&pf_rules_lock, RA_LOCKED)
+#define	PF_RULES_RASSERT()	rw_assert(&pf_rules_lock, RA_RLOCKED)
+#define	PF_RULES_WASSERT()	rw_assert(&pf_rules_lock, RA_WLOCKED)
+
+#define	PF_MODVER	1
+#define	PFLOG_MODVER	1
+#define	PFSYNC_MODVER	1
+
+#define	PFLOG_MINVER	1
+#define	PFLOG_PREFVER	PFLOG_MODVER
+#define	PFLOG_MAXVER	1
+#define	PFSYNC_MINVER	1
+#define	PFSYNC_PREFVER	PFSYNC_MODVER
+#define	PFSYNC_MAXVER	1
+
+#ifdef INET
+#ifndef INET6
+#define	PF_INET_ONLY
+#endif /* ! INET6 */
+#endif /* INET */
+
+#ifdef INET6
+#ifndef INET
+#define	PF_INET6_ONLY
+#endif /* ! INET */
+#endif /* INET6 */
+
+#ifdef INET
+#ifdef INET6
+#define	PF_INET_INET6
+#endif /* INET6 */
+#endif /* INET */
+
+#else
+
+#define	PF_INET_INET6
+
+#endif /* _KERNEL */
+
+/* Both IPv4 and IPv6 */
+#ifdef PF_INET_INET6
+
+#define PF_AEQ(a, b, c) \
+	((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
+	((a)->addr32[3] == (b)->addr32[3] && \
+	(a)->addr32[2] == (b)->addr32[2] && \
+	(a)->addr32[1] == (b)->addr32[1] && \
+	(a)->addr32[0] == (b)->addr32[0])) \
+
+#define PF_ANEQ(a, b, c) \
+	((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
+	((a)->addr32[3] != (b)->addr32[3] || \
+	(a)->addr32[2] != (b)->addr32[2] || \
+	(a)->addr32[1] != (b)->addr32[1] || \
+	(a)->addr32[0] != (b)->addr32[0])) \
+
+#define PF_AZERO(a, c) \
+	((c == AF_INET && !(a)->addr32[0]) || \
+	(!(a)->addr32[0] && !(a)->addr32[1] && \
+	!(a)->addr32[2] && !(a)->addr32[3] )) \
+
+#define PF_MATCHA(n, a, m, b, f) \
+	pf_match_addr(n, a, m, b, f)
+
+#define PF_ACPY(a, b, f) \
+	pf_addrcpy(a, b, f)
+
+#define PF_AINC(a, f) \
+	pf_addr_inc(a, f)
+
+#define PF_POOLMASK(a, b, c, d, f) \
+	pf_poolmask(a, b, c, d, f)
+
+#else
+
+/* Just IPv6 */
+
+#ifdef PF_INET6_ONLY
+
+#define PF_AEQ(a, b, c) \
+	((a)->addr32[3] == (b)->addr32[3] && \
+	(a)->addr32[2] == (b)->addr32[2] && \
+	(a)->addr32[1] == (b)->addr32[1] && \
+	(a)->addr32[0] == (b)->addr32[0]) \
+
+#define PF_ANEQ(a, b, c) \
+	((a)->addr32[3] != (b)->addr32[3] || \
+	(a)->addr32[2] != (b)->addr32[2] || \
+	(a)->addr32[1] != (b)->addr32[1] || \
+	(a)->addr32[0] != (b)->addr32[0]) \
+
+#define PF_AZERO(a, c) \
+	(!(a)->addr32[0] && \
+	!(a)->addr32[1] && \
+	!(a)->addr32[2] && \
+	!(a)->addr32[3] ) \
+
+#define PF_MATCHA(n, a, m, b, f) \
+	pf_match_addr(n, a, m, b, f)
+
+#define PF_ACPY(a, b, f) \
+	pf_addrcpy(a, b, f)
+
+#define PF_AINC(a, f) \
+	pf_addr_inc(a, f)
+
+#define PF_POOLMASK(a, b, c, d, f) \
+	pf_poolmask(a, b, c, d, f)
+
+#else
+
+/* Just IPv4 */
+#ifdef PF_INET_ONLY
+
+#define PF_AEQ(a, b, c) \
+	((a)->addr32[0] == (b)->addr32[0])
+
+#define PF_ANEQ(a, b, c) \
+	((a)->addr32[0] != (b)->addr32[0])
+
+#define PF_AZERO(a, c) \
+	(!(a)->addr32[0])
+
+#define PF_MATCHA(n, a, m, b, f) \
+	pf_match_addr(n, a, m, b, f)
+
+#define PF_ACPY(a, b, f) \
+	(a)->v4.s_addr = (b)->v4.s_addr
+
+#define PF_AINC(a, f) \
+	do { \
+		(a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
+	} while (0)
+
+#define PF_POOLMASK(a, b, c, d, f) \
+	do { \
+		(a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
+		(((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
+	} while (0)
+
+#endif /* PF_INET_ONLY */
+#endif /* PF_INET6_ONLY */
+#endif /* PF_INET_INET6 */
+
+/*
+ * XXX callers not FIB-aware in our version of pf yet.
+ * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
+ */
+#define	PF_MISMATCHAW(aw, x, af, neg, ifp, rtid)			\
+	(								\
+		(((aw)->type == PF_ADDR_NOROUTE &&			\
+		    pf_routable((x), (af), NULL, (rtid))) ||		\
+		(((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL &&	\
+		    pf_routable((x), (af), (ifp), (rtid))) ||		\
+		((aw)->type == PF_ADDR_TABLE &&				\
+		    !pfr_match_addr((aw)->p.tbl, (x), (af))) ||		\
+		((aw)->type == PF_ADDR_DYNIFTL &&			\
+		    !pfi_match_addr((aw)->p.dyn, (x), (af))) ||		\
+		((aw)->type == PF_ADDR_RANGE &&				\
+		    !pf_match_addr_range(&(aw)->v.a.addr,		\
+		    &(aw)->v.a.mask, (x), (af))) ||			\
+		((aw)->type == PF_ADDR_ADDRMASK &&			\
+		    !PF_AZERO(&(aw)->v.a.mask, (af)) &&			\
+		    !PF_MATCHA(0, &(aw)->v.a.addr,			\
+		    &(aw)->v.a.mask, (x), (af))))) !=			\
+		(neg)							\
+	)
+
+
+struct pf_rule_uid {
+	uid_t		 uid[2];
+	u_int8_t	 op;
+};
+
+struct pf_rule_gid {
+	uid_t		 gid[2];
+	u_int8_t	 op;
+};
+
+struct pf_rule_addr {
+	struct pf_addr_wrap	 addr;
+	u_int16_t		 port[2];
+	u_int8_t		 neg;
+	u_int8_t		 port_op;
+};
+
+struct pf_pooladdr {
+	struct pf_addr_wrap		 addr;
+	TAILQ_ENTRY(pf_pooladdr)	 entries;
+	char				 ifname[IFNAMSIZ];
+	struct pfi_kif			*kif;
+};
+
+TAILQ_HEAD(pf_palist, pf_pooladdr);
+
+struct pf_poolhashkey {
+	union {
+		u_int8_t		key8[16];
+		u_int16_t		key16[8];
+		u_int32_t		key32[4];
+	} pfk;		    /* 128-bit hash key */
+#define key8	pfk.key8
+#define key16	pfk.key16
+#define key32	pfk.key32
+};
+
+struct pf_pool {
+	struct pf_palist	 list;
+	struct pf_pooladdr	*cur;
+	struct pf_poolhashkey	 key;
+	struct pf_addr		 counter;
+	int			 tblidx;
+	u_int16_t		 proxy_port[2];
+	u_int8_t		 opts;
+};
+
+
+/* A packed Operating System description for fingerprinting */
+typedef u_int32_t pf_osfp_t;
+#define PF_OSFP_ANY	((pf_osfp_t)0)
+#define PF_OSFP_UNKNOWN	((pf_osfp_t)-1)
+#define PF_OSFP_NOMATCH	((pf_osfp_t)-2)
+
+struct pf_osfp_entry {
+	SLIST_ENTRY(pf_osfp_entry) fp_entry;
+	pf_osfp_t		fp_os;
+	int			fp_enflags;
+#define PF_OSFP_EXPANDED	0x001		/* expanded entry */
+#define PF_OSFP_GENERIC		0x002		/* generic signature */
+#define PF_OSFP_NODETAIL	0x004		/* no p0f details */
+#define PF_OSFP_LEN	32
+	char			fp_class_nm[PF_OSFP_LEN];
+	char			fp_version_nm[PF_OSFP_LEN];
+	char			fp_subtype_nm[PF_OSFP_LEN];
+};
+#define PF_OSFP_ENTRY_EQ(a, b) \
+    ((a)->fp_os == (b)->fp_os && \
+    memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
+    memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
+    memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
+
+/* handle pf_osfp_t packing */
+#define _FP_RESERVED_BIT	1  /* For the special negative #defines */
+#define _FP_UNUSED_BITS		1
+#define _FP_CLASS_BITS		10 /* OS Class (Windows, Linux) */
+#define _FP_VERSION_BITS	10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
+#define _FP_SUBTYPE_BITS	10 /* patch level (NT SP4, SP3, ECN patch) */
+#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
+	(class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
+	    ((1 << _FP_CLASS_BITS) - 1); \
+	(version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
+	    ((1 << _FP_VERSION_BITS) - 1);\
+	(subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
+} while(0)
+#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
+	(osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
+	    + _FP_SUBTYPE_BITS); \
+	(osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
+	    _FP_SUBTYPE_BITS; \
+	(osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
+} while(0)
+
+/* the fingerprint of an OSes TCP SYN packet */
+typedef u_int64_t	pf_tcpopts_t;
+struct pf_os_fingerprint {
+	SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
+	pf_tcpopts_t		fp_tcpopts;	/* packed TCP options */
+	u_int16_t		fp_wsize;	/* TCP window size */
+	u_int16_t		fp_psize;	/* ip->ip_len */
+	u_int16_t		fp_mss;		/* TCP MSS */
+	u_int16_t		fp_flags;
+#define PF_OSFP_WSIZE_MOD	0x0001		/* Window modulus */
+#define PF_OSFP_WSIZE_DC	0x0002		/* Window don't care */
+#define PF_OSFP_WSIZE_MSS	0x0004		/* Window multiple of MSS */
+#define PF_OSFP_WSIZE_MTU	0x0008		/* Window multiple of MTU */
+#define PF_OSFP_PSIZE_MOD	0x0010		/* packet size modulus */
+#define PF_OSFP_PSIZE_DC	0x0020		/* packet size don't care */
+#define PF_OSFP_WSCALE		0x0040		/* TCP window scaling */
+#define PF_OSFP_WSCALE_MOD	0x0080		/* TCP window scale modulus */
+#define PF_OSFP_WSCALE_DC	0x0100		/* TCP window scale dont-care */
+#define PF_OSFP_MSS		0x0200		/* TCP MSS */
+#define PF_OSFP_MSS_MOD		0x0400		/* TCP MSS modulus */
+#define PF_OSFP_MSS_DC		0x0800		/* TCP MSS dont-care */
+#define PF_OSFP_DF		0x1000		/* IPv4 don't fragment bit */
+#define PF_OSFP_TS0		0x2000		/* Zero timestamp */
+#define PF_OSFP_INET6		0x4000		/* IPv6 */
+	u_int8_t		fp_optcnt;	/* TCP option count */
+	u_int8_t		fp_wscale;	/* TCP window scaling */
+	u_int8_t		fp_ttl;		/* IPv4 TTL */
+#define PF_OSFP_MAXTTL_OFFSET	40
+/* TCP options packing */
+#define PF_OSFP_TCPOPT_NOP	0x0		/* TCP NOP option */
+#define PF_OSFP_TCPOPT_WSCALE	0x1		/* TCP window scaling option */
+#define PF_OSFP_TCPOPT_MSS	0x2		/* TCP max segment size opt */
+#define PF_OSFP_TCPOPT_SACK	0x3		/* TCP SACK OK option */
+#define PF_OSFP_TCPOPT_TS	0x4		/* TCP timestamp option */
+#define PF_OSFP_TCPOPT_BITS	3		/* bits used by each option */
+#define PF_OSFP_MAX_OPTS \
+    (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
+    / PF_OSFP_TCPOPT_BITS
+
+	SLIST_ENTRY(pf_os_fingerprint)	fp_next;
+};
+
+struct pf_osfp_ioctl {
+	struct pf_osfp_entry	fp_os;
+	pf_tcpopts_t		fp_tcpopts;	/* packed TCP options */
+	u_int16_t		fp_wsize;	/* TCP window size */
+	u_int16_t		fp_psize;	/* ip->ip_len */
+	u_int16_t		fp_mss;		/* TCP MSS */
+	u_int16_t		fp_flags;
+	u_int8_t		fp_optcnt;	/* TCP option count */
+	u_int8_t		fp_wscale;	/* TCP window scaling */
+	u_int8_t		fp_ttl;		/* IPv4 TTL */
+
+	int			fp_getnum;	/* DIOCOSFPGET number */
+};
+
+
+union pf_rule_ptr {
+	struct pf_rule		*ptr;
+	u_int32_t		 nr;
+};
+
+#define	PF_ANCHOR_NAME_SIZE	 64
+
+struct pf_rule {
+	struct pf_rule_addr	 src;
+	struct pf_rule_addr	 dst;
+#define PF_SKIP_IFP		0
+#define PF_SKIP_DIR		1
+#define PF_SKIP_AF		2
+#define PF_SKIP_PROTO		3
+#define PF_SKIP_SRC_ADDR	4
+#define PF_SKIP_SRC_PORT	5
+#define PF_SKIP_DST_ADDR	6
+#define PF_SKIP_DST_PORT	7
+#define PF_SKIP_COUNT		8
+	union pf_rule_ptr	 skip[PF_SKIP_COUNT];
+#define PF_RULE_LABEL_SIZE	 64
+	char			 label[PF_RULE_LABEL_SIZE];
+#define PF_QNAME_SIZE		 64
+	char			 ifname[IFNAMSIZ];
+	char			 qname[PF_QNAME_SIZE];
+	char			 pqname[PF_QNAME_SIZE];
+#define	PF_TAG_NAME_SIZE	 64
+	char			 tagname[PF_TAG_NAME_SIZE];
+	char			 match_tagname[PF_TAG_NAME_SIZE];
+
+	char			 overload_tblname[PF_TABLE_NAME_SIZE];
+
+	TAILQ_ENTRY(pf_rule)	 entries;
+	struct pf_pool		 rpool;
+
+	u_int64_t		 evaluations;
+	u_int64_t		 packets[2];
+	u_int64_t		 bytes[2];
+
+	struct pfi_kif		*kif;
+	struct pf_anchor	*anchor;
+	struct pfr_ktable	*overload_tbl;
+
+	pf_osfp_t		 os_fingerprint;
+
+	int			 rtableid;
+	u_int32_t		 timeout[PFTM_MAX];
+	u_int32_t		 states_cur;
+	u_int32_t		 states_tot;
+	u_int32_t		 max_states;
+	u_int32_t		 src_nodes;
+	u_int32_t		 max_src_nodes;
+	u_int32_t		 max_src_states;
+	u_int32_t		 spare1;			/* netgraph */
+	u_int32_t		 max_src_conn;
+	struct {
+		u_int32_t		limit;
+		u_int32_t		seconds;
+	}			 max_src_conn_rate;
+	u_int32_t		 qid;
+	u_int32_t		 pqid;
+	u_int32_t		 rt_listid;
+	u_int32_t		 nr;
+	u_int32_t		 prob;
+	uid_t			 cuid;
+	pid_t			 cpid;
+
+	u_int16_t		 return_icmp;
+	u_int16_t		 return_icmp6;
+	u_int16_t		 max_mss;
+	u_int16_t		 tag;
+	u_int16_t		 match_tag;
+	u_int16_t		 spare2;			/* netgraph */
+
+	struct pf_rule_uid	 uid;
+	struct pf_rule_gid	 gid;
+
+	u_int32_t		 rule_flag;
+	u_int8_t		 action;
+	u_int8_t		 direction;
+	u_int8_t		 log;
+	u_int8_t		 logif;
+	u_int8_t		 quick;
+	u_int8_t		 ifnot;
+	u_int8_t		 match_tag_not;
+	u_int8_t		 natpass;
+
+#define PF_STATE_NORMAL		0x1
+#define PF_STATE_MODULATE	0x2
+#define PF_STATE_SYNPROXY	0x3
+	u_int8_t		 keep_state;
+	sa_family_t		 af;
+	u_int8_t		 proto;
+	u_int8_t		 type;
+	u_int8_t		 code;
+	u_int8_t		 flags;
+	u_int8_t		 flagset;
+	u_int8_t		 min_ttl;
+	u_int8_t		 allow_opts;
+	u_int8_t		 rt;
+	u_int8_t		 return_ttl;
+	u_int8_t		 tos;
+	u_int8_t		 set_tos;
+	u_int8_t		 anchor_relative;
+	u_int8_t		 anchor_wildcard;
+
+#define PF_FLUSH		0x01
+#define PF_FLUSH_GLOBAL		0x02
+	u_int8_t		 flush;
+
+	struct {
+		struct pf_addr		addr;
+		u_int16_t		port;
+	}			divert;
+};
+
+/* rule flags */
+#define	PFRULE_DROP		0x0000
+#define	PFRULE_RETURNRST	0x0001
+#define	PFRULE_FRAGMENT		0x0002
+#define	PFRULE_RETURNICMP	0x0004
+#define	PFRULE_RETURN		0x0008
+#define	PFRULE_NOSYNC		0x0010
+#define PFRULE_SRCTRACK		0x0020  /* track source states */
+#define PFRULE_RULESRCTRACK	0x0040  /* per rule */
+#define	PFRULE_REFS		0x0080	/* rule has references */
+
+/* scrub flags */
+#define	PFRULE_NODF		0x0100
+#define	PFRULE_FRAGCROP		0x0200	/* non-buffering frag cache */
+#define	PFRULE_FRAGDROP		0x0400	/* drop funny fragments */
+#define PFRULE_RANDOMID		0x0800
+#define PFRULE_REASSEMBLE_TCP	0x1000
+#define PFRULE_SET_TOS		0x2000
+
+/* rule flags again */
+#define PFRULE_IFBOUND		0x00010000	/* if-bound */
+#define PFRULE_STATESLOPPY	0x00020000	/* sloppy state tracking */
+
+#define PFSTATE_HIWAT		10000	/* default state table size */
+#define PFSTATE_ADAPT_START	6000	/* default adaptive timeout start */
+#define PFSTATE_ADAPT_END	12000	/* default adaptive timeout end */
+
+
+struct pf_threshold {
+	u_int32_t	limit;
+#define	PF_THRESHOLD_MULT	1000
+#define PF_THRESHOLD_MAX	0xffffffff / PF_THRESHOLD_MULT
+	u_int32_t	seconds;
+	u_int32_t	count;
+	u_int32_t	last;
+};
+
+struct pf_src_node {
+	LIST_ENTRY(pf_src_node) entry;
+	struct pf_addr	 addr;
+	struct pf_addr	 raddr;
+	union pf_rule_ptr rule;
+	struct pfi_kif	*kif;
+	u_int64_t	 bytes[2];
+	u_int64_t	 packets[2];
+	u_int32_t	 states;
+	u_int32_t	 conn;
+	struct pf_threshold	conn_rate;
+	u_int32_t	 creation;
+	u_int32_t	 expire;
+	sa_family_t	 af;
+	u_int8_t	 ruletype;
+};
+
+#define PFSNODE_HIWAT		10000	/* default source node table size */
+
+struct pf_state_scrub {
+	struct timeval	pfss_last;	/* time received last packet	*/
+	u_int32_t	pfss_tsecr;	/* last echoed timestamp	*/
+	u_int32_t	pfss_tsval;	/* largest timestamp		*/
+	u_int32_t	pfss_tsval0;	/* original timestamp		*/
+	u_int16_t	pfss_flags;
+#define PFSS_TIMESTAMP	0x0001		/* modulate timestamp		*/
+#define PFSS_PAWS	0x0010		/* stricter PAWS checks		*/
+#define PFSS_PAWS_IDLED	0x0020		/* was idle too long.  no PAWS	*/
+#define PFSS_DATA_TS	0x0040		/* timestamp on data packets	*/
+#define PFSS_DATA_NOTS	0x0080		/* no timestamp on data packets	*/
+	u_int8_t	pfss_ttl;	/* stashed TTL			*/
+	u_int8_t	pad;
+	u_int32_t	pfss_ts_mod;	/* timestamp modulation		*/
+};
+
+struct pf_state_host {
+	struct pf_addr	addr;
+	u_int16_t	port;
+	u_int16_t	pad;
+};
+
+struct pf_state_peer {
+	struct pf_state_scrub	*scrub;	/* state is scrubbed		*/
+	u_int32_t	seqlo;		/* Max sequence number sent	*/
+	u_int32_t	seqhi;		/* Max the other end ACKd + win	*/
+	u_int32_t	seqdiff;	/* Sequence number modulator	*/
+	u_int16_t	max_win;	/* largest window (pre scaling)	*/
+	u_int16_t	mss;		/* Maximum segment size option	*/
+	u_int8_t	state;		/* active state level		*/
+	u_int8_t	wscale;		/* window scaling factor	*/
+	u_int8_t	tcp_est;	/* Did we reach TCPS_ESTABLISHED */
+	u_int8_t	pad[1];
+};
+
+/* Keep synced with struct pf_state_key. */
+struct pf_state_key_cmp {
+	struct pf_addr	 addr[2];
+	u_int16_t	 port[2];
+	sa_family_t	 af;
+	u_int8_t	 proto;
+	u_int8_t	 pad[2];
+};
+
+struct pf_state_key {
+	struct pf_addr	 addr[2];
+	u_int16_t	 port[2];
+	sa_family_t	 af;
+	u_int8_t	 proto;
+	u_int8_t	 pad[2];
+
+	LIST_ENTRY(pf_state_key) entry;
+	TAILQ_HEAD(, pf_state)	 states[2];
+};
+
+/* Keep synced with struct pf_state. */
+struct pf_state_cmp {
+	u_int64_t		 id;
+	u_int32_t		 creatorid;
+	u_int8_t		 direction;
+	u_int8_t		 pad[3];
+};
+
+struct pf_state {
+	u_int64_t		 id;
+	u_int32_t		 creatorid;
+	u_int8_t		 direction;
+	u_int8_t		 pad[3];
+
+	u_int			 refs;
+	TAILQ_ENTRY(pf_state)	 sync_list;
+	TAILQ_ENTRY(pf_state)	 key_list[2];
+	LIST_ENTRY(pf_state)	 entry;
+	struct pf_state_peer	 src;
+	struct pf_state_peer	 dst;
+	union pf_rule_ptr	 rule;
+	union pf_rule_ptr	 anchor;
+	union pf_rule_ptr	 nat_rule;
+	struct pf_addr		 rt_addr;
+	struct pf_state_key	*key[2];	/* addresses stack and wire  */
+	struct pfi_kif		*kif;
+	struct pfi_kif		*rt_kif;
+	struct pf_src_node	*src_node;
+	struct pf_src_node	*nat_src_node;
+	u_int64_t		 packets[2];
+	u_int64_t		 bytes[2];
+	u_int32_t		 creation;
+	u_int32_t	 	 expire;
+	u_int32_t		 pfsync_time;
+	u_int16_t		 tag;
+	u_int8_t		 log;
+	u_int8_t		 state_flags;
+#define	PFSTATE_ALLOWOPTS	0x01
+#define	PFSTATE_SLOPPY		0x02
+/*  was	PFSTATE_PFLOW		0x04 */
+#define	PFSTATE_NOSYNC		0x08
+#define	PFSTATE_ACK		0x10
+	u_int8_t		 timeout;
+	u_int8_t		 sync_state; /* PFSYNC_S_x */
+
+	/* XXX */
+	u_int8_t		 sync_updates;
+	u_int8_t		_tail[3];
+};
+
+/*
+ * Unified state structures for pulling states out of the kernel
+ * used by pfsync(4) and the pf(4) ioctl.
+ */
+struct pfsync_state_scrub {
+	u_int16_t	pfss_flags;
+	u_int8_t	pfss_ttl;	/* stashed TTL		*/
+#define PFSYNC_SCRUB_FLAG_VALID		0x01
+	u_int8_t	scrub_flag;
+	u_int32_t	pfss_ts_mod;	/* timestamp modulation	*/
+} __packed;
+
+struct pfsync_state_peer {
+	struct pfsync_state_scrub scrub;	/* state is scrubbed	*/
+	u_int32_t	seqlo;		/* Max sequence number sent	*/
+	u_int32_t	seqhi;		/* Max the other end ACKd + win	*/
+	u_int32_t	seqdiff;	/* Sequence number modulator	*/
+	u_int16_t	max_win;	/* largest window (pre scaling)	*/
+	u_int16_t	mss;		/* Maximum segment size option	*/
+	u_int8_t	state;		/* active state level		*/
+	u_int8_t	wscale;		/* window scaling factor	*/
+	u_int8_t	pad[6];
+} __packed;
+
+struct pfsync_state_key {
+	struct pf_addr	 addr[2];
+	u_int16_t	 port[2];
+};
+
+struct pfsync_state {
+	u_int64_t	 id;
+	char		 ifname[IFNAMSIZ];
+	struct pfsync_state_key	key[2];
+	struct pfsync_state_peer src;
+	struct pfsync_state_peer dst;
+	struct pf_addr	 rt_addr;
+	u_int32_t	 rule;
+	u_int32_t	 anchor;
+	u_int32_t	 nat_rule;
+	u_int32_t	 creation;
+	u_int32_t	 expire;
+	u_int32_t	 packets[2][2];
+	u_int32_t	 bytes[2][2];
+	u_int32_t	 creatorid;
+	sa_family_t	 af;
+	u_int8_t	 proto;
+	u_int8_t	 direction;
+	u_int8_t	 __spare[2];
+	u_int8_t	 log;
+	u_int8_t	 state_flags;
+	u_int8_t	 timeout;
+	u_int8_t	 sync_flags;
+	u_int8_t	 updates;
+} __packed;
+
+#ifdef _KERNEL
+/* pfsync */
+typedef int		pfsync_state_import_t(struct pfsync_state *, u_int8_t);
+typedef	void		pfsync_insert_state_t(struct pf_state *);
+typedef	void		pfsync_update_state_t(struct pf_state *);
+typedef	void		pfsync_delete_state_t(struct pf_state *);
+typedef void		pfsync_clear_states_t(u_int32_t, const char *);
+typedef int		pfsync_defer_t(struct pf_state *, struct mbuf *);
+
+extern pfsync_state_import_t	*pfsync_state_import_ptr;
+extern pfsync_insert_state_t	*pfsync_insert_state_ptr;
+extern pfsync_update_state_t	*pfsync_update_state_ptr;
+extern pfsync_delete_state_t	*pfsync_delete_state_ptr;
+extern pfsync_clear_states_t	*pfsync_clear_states_ptr;
+extern pfsync_defer_t		*pfsync_defer_ptr;
+
+void			pfsync_state_export(struct pfsync_state *,
+			    struct pf_state *);
+
+/* pflog */
+struct pf_ruleset;
+struct pf_pdesc;
+typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t,
+    u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
+    struct pf_ruleset *, struct pf_pdesc *, int);
+extern pflog_packet_t		*pflog_packet_ptr;
+
+#define	V_pf_end_threads	VNET(pf_end_threads)
+#endif /* _KERNEL */
+
+#define	PFSYNC_FLAG_SRCNODE	0x04
+#define	PFSYNC_FLAG_NATSRCNODE	0x08
+
+/* for copies to/from network byte order */
+/* ioctl interface also uses network byte order */
+#define pf_state_peer_hton(s,d) do {		\
+	(d)->seqlo = htonl((s)->seqlo);		\
+	(d)->seqhi = htonl((s)->seqhi);		\
+	(d)->seqdiff = htonl((s)->seqdiff);	\
+	(d)->max_win = htons((s)->max_win);	\
+	(d)->mss = htons((s)->mss);		\
+	(d)->state = (s)->state;		\
+	(d)->wscale = (s)->wscale;		\
+	if ((s)->scrub) {						\
+		(d)->scrub.pfss_flags = 				\
+		    htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP);	\
+		(d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl;		\
+		(d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
+		(d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID;	\
+	}								\
+} while (0)
+
+#define pf_state_peer_ntoh(s,d) do {		\
+	(d)->seqlo = ntohl((s)->seqlo);		\
+	(d)->seqhi = ntohl((s)->seqhi);		\
+	(d)->seqdiff = ntohl((s)->seqdiff);	\
+	(d)->max_win = ntohs((s)->max_win);	\
+	(d)->mss = ntohs((s)->mss);		\
+	(d)->state = (s)->state;		\
+	(d)->wscale = (s)->wscale;		\
+	if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && 	\
+	    (d)->scrub != NULL) {					\
+		(d)->scrub->pfss_flags =				\
+		    ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP;	\
+		(d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl;		\
+		(d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
+	}								\
+} while (0)
+
+#define pf_state_counter_hton(s,d) do {				\
+	d[0] = htonl((s>>32)&0xffffffff);			\
+	d[1] = htonl(s&0xffffffff);				\
+} while (0)
+
+#define pf_state_counter_from_pfsync(s)				\
+	(((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
+
+#define pf_state_counter_ntoh(s,d) do {				\
+	d = ntohl(s[0]);					\
+	d = d<<32;						\
+	d += ntohl(s[1]);					\
+} while (0)
+
+TAILQ_HEAD(pf_rulequeue, pf_rule);
+
+struct pf_anchor;
+
+struct pf_ruleset {
+	struct {
+		struct pf_rulequeue	 queues[2];
+		struct {
+			struct pf_rulequeue	*ptr;
+			struct pf_rule		**ptr_array;
+			u_int32_t		 rcount;
+			u_int32_t		 ticket;
+			int			 open;
+		}			 active, inactive;
+	}			 rules[PF_RULESET_MAX];
+	struct pf_anchor	*anchor;
+	u_int32_t		 tticket;
+	int			 tables;
+	int			 topen;
+};
+
+RB_HEAD(pf_anchor_global, pf_anchor);
+RB_HEAD(pf_anchor_node, pf_anchor);
+struct pf_anchor {
+	RB_ENTRY(pf_anchor)	 entry_global;
+	RB_ENTRY(pf_anchor)	 entry_node;
+	struct pf_anchor	*parent;
+	struct pf_anchor_node	 children;
+	char			 name[PF_ANCHOR_NAME_SIZE];
+	char			 path[MAXPATHLEN];
+	struct pf_ruleset	 ruleset;
+	int			 refcnt;	/* anchor rules */
+	int			 match;
+};
+RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
+RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
+
+#define PF_RESERVED_ANCHOR	"_pf"
+
+#define PFR_TFLAG_PERSIST	0x00000001
+#define PFR_TFLAG_CONST		0x00000002
+#define PFR_TFLAG_ACTIVE	0x00000004
+#define PFR_TFLAG_INACTIVE	0x00000008
+#define PFR_TFLAG_REFERENCED	0x00000010
+#define PFR_TFLAG_REFDANCHOR	0x00000020
+#define PFR_TFLAG_COUNTERS	0x00000040
+/* Adjust masks below when adding flags. */
+#define PFR_TFLAG_USRMASK	(PFR_TFLAG_PERSIST	| \
+				 PFR_TFLAG_CONST	| \
+				 PFR_TFLAG_COUNTERS)
+#define PFR_TFLAG_SETMASK	(PFR_TFLAG_ACTIVE	| \
+				 PFR_TFLAG_INACTIVE	| \
+				 PFR_TFLAG_REFERENCED	| \
+				 PFR_TFLAG_REFDANCHOR)
+#define PFR_TFLAG_ALLMASK	(PFR_TFLAG_PERSIST	| \
+				 PFR_TFLAG_CONST	| \
+				 PFR_TFLAG_ACTIVE	| \
+				 PFR_TFLAG_INACTIVE	| \
+				 PFR_TFLAG_REFERENCED	| \
+				 PFR_TFLAG_REFDANCHOR	| \
+				 PFR_TFLAG_COUNTERS)
+
+struct pfr_table {
+	char			 pfrt_anchor[MAXPATHLEN];
+	char			 pfrt_name[PF_TABLE_NAME_SIZE];
+	u_int32_t		 pfrt_flags;
+	u_int8_t		 pfrt_fback;
+};
+
+enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
+	PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
+	PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
+
+struct pfr_addr {
+	union {
+		struct in_addr	 _pfra_ip4addr;
+		struct in6_addr	 _pfra_ip6addr;
+	}		 pfra_u;
+	u_int8_t	 pfra_af;
+	u_int8_t	 pfra_net;
+	u_int8_t	 pfra_not;
+	u_int8_t	 pfra_fback;
+};
+#define	pfra_ip4addr	pfra_u._pfra_ip4addr
+#define	pfra_ip6addr	pfra_u._pfra_ip6addr
+
+enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
+enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
+#define PFR_OP_XPASS	PFR_OP_ADDR_MAX
+
+struct pfr_astats {
+	struct pfr_addr	 pfras_a;
+	u_int64_t	 pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
+	u_int64_t	 pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
+	long		 pfras_tzero;
+};
+
+enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
+
+struct pfr_tstats {
+	struct pfr_table pfrts_t;
+	u_int64_t	 pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
+	u_int64_t	 pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
+	u_int64_t	 pfrts_match;
+	u_int64_t	 pfrts_nomatch;
+	long		 pfrts_tzero;
+	int		 pfrts_cnt;
+	int		 pfrts_refcnt[PFR_REFCNT_MAX];
+};
+#define	pfrts_name	pfrts_t.pfrt_name
+#define pfrts_flags	pfrts_t.pfrt_flags
+
+#ifndef _SOCKADDR_UNION_DEFINED
+#define	_SOCKADDR_UNION_DEFINED
+union sockaddr_union {
+	struct sockaddr		sa;
+	struct sockaddr_in	sin;
+	struct sockaddr_in6	sin6;
+};
+#endif /* _SOCKADDR_UNION_DEFINED */
+
+struct pfr_kcounters {
+	u_int64_t		 pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
+	u_int64_t		 pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
+};
+
+SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
+struct pfr_kentry {
+	struct radix_node	 pfrke_node[2];
+	union sockaddr_union	 pfrke_sa;
+	SLIST_ENTRY(pfr_kentry)	 pfrke_workq;
+	struct pfr_kcounters	*pfrke_counters;
+	long			 pfrke_tzero;
+	u_int8_t		 pfrke_af;
+	u_int8_t		 pfrke_net;
+	u_int8_t		 pfrke_not;
+	u_int8_t		 pfrke_mark;
+};
+
+SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
+RB_HEAD(pfr_ktablehead, pfr_ktable);
+struct pfr_ktable {
+	struct pfr_tstats	 pfrkt_ts;
+	RB_ENTRY(pfr_ktable)	 pfrkt_tree;
+	SLIST_ENTRY(pfr_ktable)	 pfrkt_workq;
+	struct radix_node_head	*pfrkt_ip4;
+	struct radix_node_head	*pfrkt_ip6;
+	struct pfr_ktable	*pfrkt_shadow;
+	struct pfr_ktable	*pfrkt_root;
+	struct pf_ruleset	*pfrkt_rs;
+	long			 pfrkt_larg;
+	int			 pfrkt_nflags;
+};
+#define pfrkt_t		pfrkt_ts.pfrts_t
+#define pfrkt_name	pfrkt_t.pfrt_name
+#define pfrkt_anchor	pfrkt_t.pfrt_anchor
+#define pfrkt_ruleset	pfrkt_t.pfrt_ruleset
+#define pfrkt_flags	pfrkt_t.pfrt_flags
+#define pfrkt_cnt	pfrkt_ts.pfrts_cnt
+#define pfrkt_refcnt	pfrkt_ts.pfrts_refcnt
+#define pfrkt_packets	pfrkt_ts.pfrts_packets
+#define pfrkt_bytes	pfrkt_ts.pfrts_bytes
+#define pfrkt_match	pfrkt_ts.pfrts_match
+#define pfrkt_nomatch	pfrkt_ts.pfrts_nomatch
+#define pfrkt_tzero	pfrkt_ts.pfrts_tzero
+
+/* keep synced with pfi_kif, used in RB_FIND */
+struct pfi_kif_cmp {
+	char				 pfik_name[IFNAMSIZ];
+};
+
+struct pfi_kif {
+	char				 pfik_name[IFNAMSIZ];
+	union {
+		RB_ENTRY(pfi_kif)	 _pfik_tree;
+		LIST_ENTRY(pfi_kif)	 _pfik_list;
+	} _pfik_glue;
+#define	pfik_tree	_pfik_glue._pfik_tree
+#define	pfik_list	_pfik_glue._pfik_list
+	u_int64_t			 pfik_packets[2][2][2];
+	u_int64_t			 pfik_bytes[2][2][2];
+	u_int32_t			 pfik_tzero;
+	u_int				 pfik_flags;
+	struct ifnet			*pfik_ifp;
+	struct ifg_group		*pfik_group;
+	u_int				 pfik_rulerefs;
+	TAILQ_HEAD(, pfi_dynaddr)	 pfik_dynaddrs;
+};
+
+#define	PFI_IFLAG_REFS		0x0001	/* has state references */
+#define PFI_IFLAG_SKIP		0x0100	/* skip filtering on interface */
+
+struct pf_pdesc {
+	struct {
+		int	 done;
+		uid_t	 uid;
+		gid_t	 gid;
+	}		 lookup;
+	u_int64_t	 tot_len;	/* Make Mickey money */
+	union {
+		struct tcphdr		*tcp;
+		struct udphdr		*udp;
+		struct icmp		*icmp;
+#ifdef INET6
+		struct icmp6_hdr	*icmp6;
+#endif /* INET6 */
+		void			*any;
+	} hdr;
+
+	struct pf_rule	*nat_rule;	/* nat/rdr rule applied to packet */
+	struct pf_addr	*src;		/* src address */
+	struct pf_addr	*dst;		/* dst address */
+	u_int16_t *sport;
+	u_int16_t *dport;
+	struct pf_mtag	*pf_mtag;
+
+	u_int32_t	 p_len;		/* total length of payload */
+
+	u_int16_t	*ip_sum;
+	u_int16_t	*proto_sum;
+	u_int16_t	 flags;		/* Let SCRUB trigger behavior in
+					 * state code. Easier than tags */
+#define PFDESC_TCP_NORM	0x0001		/* TCP shall be statefully scrubbed */
+#define PFDESC_IP_REAS	0x0002		/* IP frags would've been reassembled */
+	sa_family_t	 af;
+	u_int8_t	 proto;
+	u_int8_t	 tos;
+	u_int8_t	 dir;		/* direction */
+	u_int8_t	 sidx;		/* key index for source */
+	u_int8_t	 didx;		/* key index for destination */
+};
+
+/* flags for RDR options */
+#define PF_DPORT_RANGE	0x01		/* Dest port uses range */
+#define PF_RPORT_RANGE	0x02		/* RDR'ed port uses range */
+
+/* Reasons code for passing/dropping a packet */
+#define PFRES_MATCH	0		/* Explicit match of a rule */
+#define PFRES_BADOFF	1		/* Bad offset for pull_hdr */
+#define PFRES_FRAG	2		/* Dropping following fragment */
+#define PFRES_SHORT	3		/* Dropping short packet */
+#define PFRES_NORM	4		/* Dropping by normalizer */
+#define PFRES_MEMORY	5		/* Dropped due to lacking mem */
+#define PFRES_TS	6		/* Bad TCP Timestamp (RFC1323) */
+#define PFRES_CONGEST	7		/* Congestion (of ipintrq) */
+#define PFRES_IPOPTIONS 8		/* IP option */
+#define PFRES_PROTCKSUM 9		/* Protocol checksum invalid */
+#define PFRES_BADSTATE	10		/* State mismatch */
+#define PFRES_STATEINS	11		/* State insertion failure */
+#define PFRES_MAXSTATES	12		/* State limit */
+#define PFRES_SRCLIMIT	13		/* Source node/conn limit */
+#define PFRES_SYNPROXY	14		/* SYN proxy */
+#define PFRES_MAX	15		/* total+1 */
+
+#define PFRES_NAMES { \
+	"match", \
+	"bad-offset", \
+	"fragment", \
+	"short", \
+	"normalize", \
+	"memory", \
+	"bad-timestamp", \
+	"congestion", \
+	"ip-option", \
+	"proto-cksum", \
+	"state-mismatch", \
+	"state-insert", \
+	"state-limit", \
+	"src-limit", \
+	"synproxy", \
+	NULL \
+}
+
+/* Counters for other things we want to keep track of */
+#define LCNT_STATES		0	/* states */
+#define LCNT_SRCSTATES		1	/* max-src-states */
+#define LCNT_SRCNODES		2	/* max-src-nodes */
+#define LCNT_SRCCONN		3	/* max-src-conn */
+#define LCNT_SRCCONNRATE	4	/* max-src-conn-rate */
+#define LCNT_OVERLOAD_TABLE	5	/* entry added to overload table */
+#define LCNT_OVERLOAD_FLUSH	6	/* state entries flushed */
+#define LCNT_MAX		7	/* total+1 */
+
+#define LCNT_NAMES { \
+	"max states per rule", \
+	"max-src-states", \
+	"max-src-nodes", \
+	"max-src-conn", \
+	"max-src-conn-rate", \
+	"overload table insertion", \
+	"overload flush states", \
+	NULL \
+}
+
+/* UDP state enumeration */
+#define PFUDPS_NO_TRAFFIC	0
+#define PFUDPS_SINGLE		1
+#define PFUDPS_MULTIPLE		2
+
+#define PFUDPS_NSTATES		3	/* number of state levels */
+
+#define PFUDPS_NAMES { \
+	"NO_TRAFFIC", \
+	"SINGLE", \
+	"MULTIPLE", \
+	NULL \
+}
+
+/* Other protocol state enumeration */
+#define PFOTHERS_NO_TRAFFIC	0
+#define PFOTHERS_SINGLE		1
+#define PFOTHERS_MULTIPLE	2
+
+#define PFOTHERS_NSTATES	3	/* number of state levels */
+
+#define PFOTHERS_NAMES { \
+	"NO_TRAFFIC", \
+	"SINGLE", \
+	"MULTIPLE", \
+	NULL \
+}
+
+#define FCNT_STATE_SEARCH	0
+#define FCNT_STATE_INSERT	1
+#define FCNT_STATE_REMOVALS	2
+#define FCNT_MAX		3
+
+#define SCNT_SRC_NODE_SEARCH	0
+#define SCNT_SRC_NODE_INSERT	1
+#define SCNT_SRC_NODE_REMOVALS	2
+#define SCNT_MAX		3
+
+#define ACTION_SET(a, x) \
+	do { \
+		if ((a) != NULL) \
+			*(a) = (x); \
+	} while (0)
+
+#define REASON_SET(a, x) \
+	do { \
+		if ((a) != NULL) \
+			*(a) = (x); \
+		if (x < PFRES_MAX) \
+			V_pf_status.counters[x]++; \
+	} while (0)
+
+struct pf_status {
+	u_int64_t	counters[PFRES_MAX];
+	u_int64_t	lcounters[LCNT_MAX];	/* limit counters */
+	u_int64_t	fcounters[FCNT_MAX];
+	u_int64_t	scounters[SCNT_MAX];
+	u_int64_t	pcounters[2][2][3];
+	u_int64_t	bcounters[2][2];
+	u_int32_t	running;
+	u_int32_t	states;
+	u_int32_t	src_nodes;
+	u_int32_t	since;
+	u_int32_t	debug;
+	u_int32_t	hostid;
+	char		ifname[IFNAMSIZ];
+	u_int8_t	pf_chksum[PF_MD5_DIGEST_LENGTH];
+};
+
+struct cbq_opts {
+	u_int		minburst;
+	u_int		maxburst;
+	u_int		pktsize;
+	u_int		maxpktsize;
+	u_int		ns_per_byte;
+	u_int		maxidle;
+	int		minidle;
+	u_int		offtime;
+	int		flags;
+};
+
+struct priq_opts {
+	int		flags;
+};
+
+struct hfsc_opts {
+	/* real-time service curve */
+	u_int		rtsc_m1;	/* slope of the 1st segment in bps */
+	u_int		rtsc_d;		/* the x-projection of m1 in msec */
+	u_int		rtsc_m2;	/* slope of the 2nd segment in bps */
+	/* link-sharing service curve */
+	u_int		lssc_m1;
+	u_int		lssc_d;
+	u_int		lssc_m2;
+	/* upper-limit service curve */
+	u_int		ulsc_m1;
+	u_int		ulsc_d;
+	u_int		ulsc_m2;
+	int		flags;
+};
+
+struct pf_altq {
+	char			 ifname[IFNAMSIZ];
+
+	void			*altq_disc;	/* discipline-specific state */
+	TAILQ_ENTRY(pf_altq)	 entries;
+
+	/* scheduler spec */
+	u_int8_t		 scheduler;	/* scheduler type */
+	u_int16_t		 tbrsize;	/* tokenbucket regulator size */
+	u_int32_t		 ifbandwidth;	/* interface bandwidth */
+
+	/* queue spec */
+	char			 qname[PF_QNAME_SIZE];	/* queue name */
+	char			 parent[PF_QNAME_SIZE];	/* parent name */
+	u_int32_t		 parent_qid;	/* parent queue id */
+	u_int32_t		 bandwidth;	/* queue bandwidth */
+	u_int8_t		 priority;	/* priority */
+	u_int8_t		 local_flags;	/* dynamic interface */
+#define	PFALTQ_FLAG_IF_REMOVED		0x01
+
+	u_int16_t		 qlimit;	/* queue size limit */
+	u_int16_t		 flags;		/* misc flags */
+	union {
+		struct cbq_opts		 cbq_opts;
+		struct priq_opts	 priq_opts;
+		struct hfsc_opts	 hfsc_opts;
+	} pq_u;
+
+	u_int32_t		 qid;		/* return value */
+};
+
+struct pf_divert {
+	union {
+		struct in_addr	ipv4;
+		struct in6_addr	ipv6;
+	}		addr;
+	u_int16_t	port;
+};
+
+#define PFFRAG_FRENT_HIWAT	5000	/* Number of fragment entries */
+#define PFR_KENTRY_HIWAT	200000	/* Number of table entries */
+
+/*
+ * ioctl parameter structures
+ */
+
+struct pfioc_pooladdr {
+	u_int32_t		 action;
+	u_int32_t		 ticket;
+	u_int32_t		 nr;
+	u_int32_t		 r_num;
+	u_int8_t		 r_action;
+	u_int8_t		 r_last;
+	u_int8_t		 af;
+	char			 anchor[MAXPATHLEN];
+	struct pf_pooladdr	 addr;
+};
+
+struct pfioc_rule {
+	u_int32_t	 action;
+	u_int32_t	 ticket;
+	u_int32_t	 pool_ticket;
+	u_int32_t	 nr;
+	char		 anchor[MAXPATHLEN];
+	char		 anchor_call[MAXPATHLEN];
+	struct pf_rule	 rule;
+};
+
+struct pfioc_natlook {
+	struct pf_addr	 saddr;
+	struct pf_addr	 daddr;
+	struct pf_addr	 rsaddr;
+	struct pf_addr	 rdaddr;
+	u_int16_t	 sport;
+	u_int16_t	 dport;
+	u_int16_t	 rsport;
+	u_int16_t	 rdport;
+	sa_family_t	 af;
+	u_int8_t	 proto;
+	u_int8_t	 direction;
+};
+
+struct pfioc_state {
+	struct pfsync_state	state;
+};
+
+struct pfioc_src_node_kill {
+	sa_family_t psnk_af;
+	struct pf_rule_addr psnk_src;
+	struct pf_rule_addr psnk_dst;
+	u_int		    psnk_killed;
+};
+
+struct pfioc_state_kill {
+	struct pf_state_cmp	psk_pfcmp;
+	sa_family_t		psk_af;
+	int			psk_proto;
+	struct pf_rule_addr	psk_src;
+	struct pf_rule_addr	psk_dst;
+	char			psk_ifname[IFNAMSIZ];
+	char			psk_label[PF_RULE_LABEL_SIZE];
+	u_int			psk_killed;
+};
+
+struct pfioc_states {
+	int	ps_len;
+	union {
+		caddr_t			 psu_buf;
+		struct pfsync_state	*psu_states;
+	} ps_u;
+#define ps_buf		ps_u.psu_buf
+#define ps_states	ps_u.psu_states
+};
+
+struct pfioc_src_nodes {
+	int	psn_len;
+	union {
+		caddr_t		 psu_buf;
+		struct pf_src_node	*psu_src_nodes;
+	} psn_u;
+#define psn_buf		psn_u.psu_buf
+#define psn_src_nodes	psn_u.psu_src_nodes
+};
+
+struct pfioc_if {
+	char		 ifname[IFNAMSIZ];
+};
+
+struct pfioc_tm {
+	int		 timeout;
+	int		 seconds;
+};
+
+struct pfioc_limit {
+	int		 index;
+	unsigned	 limit;
+};
+
+struct pfioc_altq {
+	u_int32_t	 action;
+	u_int32_t	 ticket;
+	u_int32_t	 nr;
+	struct pf_altq	 altq;
+};
+
+struct pfioc_qstats {
+	u_int32_t	 ticket;
+	u_int32_t	 nr;
+	void		*buf;
+	int		 nbytes;
+	u_int8_t	 scheduler;
+};
+
+struct pfioc_ruleset {
+	u_int32_t	 nr;
+	char		 path[MAXPATHLEN];
+	char		 name[PF_ANCHOR_NAME_SIZE];
+};
+
+#define PF_RULESET_ALTQ		(PF_RULESET_MAX)
+#define PF_RULESET_TABLE	(PF_RULESET_MAX+1)
+struct pfioc_trans {
+	int		 size;	/* number of elements */
+	int		 esize; /* size of each element in bytes */
+	struct pfioc_trans_e {
+		int		rs_num;
+		char		anchor[MAXPATHLEN];
+		u_int32_t	ticket;
+	}		*array;
+};
+
+#define PFR_FLAG_ATOMIC		0x00000001	/* unused */
+#define PFR_FLAG_DUMMY		0x00000002
+#define PFR_FLAG_FEEDBACK	0x00000004
+#define PFR_FLAG_CLSTATS	0x00000008
+#define PFR_FLAG_ADDRSTOO	0x00000010
+#define PFR_FLAG_REPLACE	0x00000020
+#define PFR_FLAG_ALLRSETS	0x00000040
+#define PFR_FLAG_ALLMASK	0x0000007F
+#ifdef _KERNEL
+#define PFR_FLAG_USERIOCTL	0x10000000
+#endif
+
+struct pfioc_table {
+	struct pfr_table	 pfrio_table;
+	void			*pfrio_buffer;
+	int			 pfrio_esize;
+	int			 pfrio_size;
+	int			 pfrio_size2;
+	int			 pfrio_nadd;
+	int			 pfrio_ndel;
+	int			 pfrio_nchange;
+	int			 pfrio_flags;
+	u_int32_t		 pfrio_ticket;
+};
+#define	pfrio_exists	pfrio_nadd
+#define	pfrio_nzero	pfrio_nadd
+#define	pfrio_nmatch	pfrio_nadd
+#define pfrio_naddr	pfrio_size2
+#define pfrio_setflag	pfrio_size2
+#define pfrio_clrflag	pfrio_nadd
+
+struct pfioc_iface {
+	char	 pfiio_name[IFNAMSIZ];
+	void	*pfiio_buffer;
+	int	 pfiio_esize;
+	int	 pfiio_size;
+	int	 pfiio_nzero;
+	int	 pfiio_flags;
+};
+
+
+/*
+ * ioctl operations
+ */
+
+#define DIOCSTART	_IO  ('D',  1)
+#define DIOCSTOP	_IO  ('D',  2)
+#define DIOCADDRULE	_IOWR('D',  4, struct pfioc_rule)
+#define DIOCGETRULES	_IOWR('D',  6, struct pfioc_rule)
+#define DIOCGETRULE	_IOWR('D',  7, struct pfioc_rule)
+/* XXX cut 8 - 17 */
+#define DIOCCLRSTATES	_IOWR('D', 18, struct pfioc_state_kill)
+#define DIOCGETSTATE	_IOWR('D', 19, struct pfioc_state)
+#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
+#define DIOCGETSTATUS	_IOWR('D', 21, struct pf_status)
+#define DIOCCLRSTATUS	_IO  ('D', 22)
+#define DIOCNATLOOK	_IOWR('D', 23, struct pfioc_natlook)
+#define DIOCSETDEBUG	_IOWR('D', 24, u_int32_t)
+#define DIOCGETSTATES	_IOWR('D', 25, struct pfioc_states)
+#define DIOCCHANGERULE	_IOWR('D', 26, struct pfioc_rule)
+/* XXX cut 26 - 28 */
+#define DIOCSETTIMEOUT	_IOWR('D', 29, struct pfioc_tm)
+#define DIOCGETTIMEOUT	_IOWR('D', 30, struct pfioc_tm)
+#define DIOCADDSTATE	_IOWR('D', 37, struct pfioc_state)
+#define DIOCCLRRULECTRS	_IO  ('D', 38)
+#define DIOCGETLIMIT	_IOWR('D', 39, struct pfioc_limit)
+#define DIOCSETLIMIT	_IOWR('D', 40, struct pfioc_limit)
+#define DIOCKILLSTATES	_IOWR('D', 41, struct pfioc_state_kill)
+#define DIOCSTARTALTQ	_IO  ('D', 42)
+#define DIOCSTOPALTQ	_IO  ('D', 43)
+#define DIOCADDALTQ	_IOWR('D', 45, struct pfioc_altq)
+#define DIOCGETALTQS	_IOWR('D', 47, struct pfioc_altq)
+#define DIOCGETALTQ	_IOWR('D', 48, struct pfioc_altq)
+#define DIOCCHANGEALTQ	_IOWR('D', 49, struct pfioc_altq)
+#define DIOCGETQSTATS	_IOWR('D', 50, struct pfioc_qstats)
+#define DIOCBEGINADDRS	_IOWR('D', 51, struct pfioc_pooladdr)
+#define DIOCADDADDR	_IOWR('D', 52, struct pfioc_pooladdr)
+#define DIOCGETADDRS	_IOWR('D', 53, struct pfioc_pooladdr)
+#define DIOCGETADDR	_IOWR('D', 54, struct pfioc_pooladdr)
+#define DIOCCHANGEADDR	_IOWR('D', 55, struct pfioc_pooladdr)
+/* XXX cut 55 - 57 */
+#define	DIOCGETRULESETS	_IOWR('D', 58, struct pfioc_ruleset)
+#define	DIOCGETRULESET	_IOWR('D', 59, struct pfioc_ruleset)
+#define	DIOCRCLRTABLES	_IOWR('D', 60, struct pfioc_table)
+#define	DIOCRADDTABLES	_IOWR('D', 61, struct pfioc_table)
+#define	DIOCRDELTABLES	_IOWR('D', 62, struct pfioc_table)
+#define	DIOCRGETTABLES	_IOWR('D', 63, struct pfioc_table)
+#define	DIOCRGETTSTATS	_IOWR('D', 64, struct pfioc_table)
+#define DIOCRCLRTSTATS	_IOWR('D', 65, struct pfioc_table)
+#define	DIOCRCLRADDRS	_IOWR('D', 66, struct pfioc_table)
+#define	DIOCRADDADDRS	_IOWR('D', 67, struct pfioc_table)
+#define	DIOCRDELADDRS	_IOWR('D', 68, struct pfioc_table)
+#define	DIOCRSETADDRS	_IOWR('D', 69, struct pfioc_table)
+#define	DIOCRGETADDRS	_IOWR('D', 70, struct pfioc_table)
+#define	DIOCRGETASTATS	_IOWR('D', 71, struct pfioc_table)
+#define	DIOCRCLRASTATS	_IOWR('D', 72, struct pfioc_table)
+#define	DIOCRTSTADDRS	_IOWR('D', 73, struct pfioc_table)
+#define	DIOCRSETTFLAGS	_IOWR('D', 74, struct pfioc_table)
+#define	DIOCRINADEFINE	_IOWR('D', 77, struct pfioc_table)
+#define	DIOCOSFPFLUSH	_IO('D', 78)
+#define	DIOCOSFPADD	_IOWR('D', 79, struct pf_osfp_ioctl)
+#define	DIOCOSFPGET	_IOWR('D', 80, struct pf_osfp_ioctl)
+#define	DIOCXBEGIN	_IOWR('D', 81, struct pfioc_trans)
+#define	DIOCXCOMMIT	_IOWR('D', 82, struct pfioc_trans)
+#define	DIOCXROLLBACK	_IOWR('D', 83, struct pfioc_trans)
+#define	DIOCGETSRCNODES	_IOWR('D', 84, struct pfioc_src_nodes)
+#define	DIOCCLRSRCNODES	_IO('D', 85)
+#define	DIOCSETHOSTID	_IOWR('D', 86, u_int32_t)
+#define	DIOCIGETIFACES	_IOWR('D', 87, struct pfioc_iface)
+#define	DIOCSETIFFLAG	_IOWR('D', 89, struct pfioc_iface)
+#define	DIOCCLRIFFLAG	_IOWR('D', 90, struct pfioc_iface)
+#define	DIOCKILLSRCNODES	_IOWR('D', 91, struct pfioc_src_node_kill)
+struct pf_ifspeed {
+	char			ifname[IFNAMSIZ];
+	u_int32_t		baudrate;
+};
+#define	DIOCGIFSPEED	_IOWR('D', 92, struct pf_ifspeed)
+
+#ifdef _KERNEL
+struct pf_srchash {
+	LIST_HEAD(, pf_src_node)	nodes;
+	struct mtx			lock;
+};
+
+struct pf_keyhash {
+	LIST_HEAD(, pf_state_key)	keys;
+	struct mtx			lock;
+};
+
+struct pf_idhash {
+	LIST_HEAD(, pf_state)		states;
+	struct mtx			lock;
+};
+
+#define	PF_HASHSIZ	(32768)
+VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
+VNET_DECLARE(struct pf_idhash *, pf_idhash);
+VNET_DECLARE(u_long, pf_hashmask);
+#define V_pf_keyhash	VNET(pf_keyhash)
+#define	V_pf_idhash	VNET(pf_idhash)
+#define	V_pf_hashmask	VNET(pf_hashmask)
+VNET_DECLARE(struct pf_srchash *, pf_srchash);
+VNET_DECLARE(u_long, pf_srchashmask);
+#define	V_pf_srchash	VNET(pf_srchash)
+#define V_pf_srchashmask VNET(pf_srchashmask)
+
+#define PF_IDHASH(s)	(be64toh((s)->id) % (V_pf_hashmask + 1))
+
+VNET_DECLARE(void *, pf_swi_cookie);
+#define V_pf_swi_cookie	VNET(pf_swi_cookie)
+
+VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
+#define	V_pf_stateid	VNET(pf_stateid)
+
+TAILQ_HEAD(pf_altqqueue, pf_altq);
+VNET_DECLARE(struct pf_altqqueue,	 pf_altqs[2]);
+#define	V_pf_altqs			 VNET(pf_altqs)
+VNET_DECLARE(struct pf_palist,		 pf_pabuf);
+#define	V_pf_pabuf			 VNET(pf_pabuf)
+
+VNET_DECLARE(u_int32_t,			 ticket_altqs_active);
+#define	V_ticket_altqs_active		 VNET(ticket_altqs_active)
+VNET_DECLARE(u_int32_t,			 ticket_altqs_inactive);
+#define	V_ticket_altqs_inactive		 VNET(ticket_altqs_inactive)
+VNET_DECLARE(int,			 altqs_inactive_open);
+#define	V_altqs_inactive_open		 VNET(altqs_inactive_open)
+VNET_DECLARE(u_int32_t,			 ticket_pabuf);
+#define	V_ticket_pabuf			 VNET(ticket_pabuf)
+VNET_DECLARE(struct pf_altqqueue *,	 pf_altqs_active);
+#define	V_pf_altqs_active		 VNET(pf_altqs_active)
+VNET_DECLARE(struct pf_altqqueue *,	 pf_altqs_inactive);
+#define	V_pf_altqs_inactive		 VNET(pf_altqs_inactive)
+
+VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules);
+#define	V_pf_unlinked_rules	VNET(pf_unlinked_rules)
+
+void				 pf_initialize(void);
+void				 pf_cleanup(void);
+
+struct pf_mtag			*pf_get_mtag(struct mbuf *);
+
+extern void			 pf_calc_skip_steps(struct pf_rulequeue *);
+#ifdef ALTQ
+extern	void			 pf_altq_ifnet_event(struct ifnet *, int);
+#endif
+VNET_DECLARE(uma_zone_t,	 pf_state_z);
+#define	V_pf_state_z		 VNET(pf_state_z)
+VNET_DECLARE(uma_zone_t,	 pf_state_key_z);
+#define	V_pf_state_key_z	 VNET(pf_state_key_z)
+VNET_DECLARE(uma_zone_t,	 pf_state_scrub_z);
+#define	V_pf_state_scrub_z	 VNET(pf_state_scrub_z)
+
+extern void			 pf_purge_thread(void *);
+extern void			 pf_intr(void *);
+extern void			 pf_purge_expired_src_nodes(void);
+
+extern int			 pf_unlink_state(struct pf_state *, u_int);
+#define	PF_ENTER_LOCKED		0x00000001
+#define	PF_RETURN_LOCKED	0x00000002
+extern int			 pf_state_insert(struct pfi_kif *,
+				    struct pf_state_key *,
+				    struct pf_state_key *,
+				    struct pf_state *);
+extern void			 pf_free_state(struct pf_state *);
+
+static __inline u_int
+pf_hashsrc(struct pf_addr *addr, sa_family_t af)
+{
+	u_int h;
+
+#define	ADDR_HASH(a)	((a) ^ ((a) >> 16))
+
+	switch (af) {
+	case AF_INET:
+		h = ADDR_HASH(addr->v4.s_addr);
+		break;
+	case AF_INET6:
+		h = ADDR_HASH(addr->v6.__u6_addr.__u6_addr32[3]);
+	default:
+		panic("%s: unknown address family %u", __func__, af);
+	}
+#undef ADDR_HASH
+
+	return (h & V_pf_srchashmask);
+}
+
+static __inline void
+pf_ref_state(struct pf_state *s)
+{
+
+	refcount_acquire(&s->refs);
+}
+
+static __inline int
+pf_release_state(struct pf_state *s)
+{
+
+	if (refcount_release(&s->refs)) {
+		pf_free_state(s);
+		return (1);
+	} else
+		return (0);
+}
+
+extern struct pf_state		*pf_find_state_byid(uint64_t, uint32_t);
+extern struct pf_state		*pf_find_state_all(struct pf_state_key_cmp *,
+				    u_int, int *);
+struct pf_src_node		*pf_find_src_node(struct pf_addr *, struct pf_rule *,
+				    sa_family_t, int);
+extern void			 pf_print_state(struct pf_state *);
+extern void			 pf_print_flags(u_int8_t);
+extern u_int16_t		 pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
+				    u_int8_t);
+
+VNET_DECLARE(struct ifnet *,		 sync_ifp);
+#define	V_sync_ifp		 	 VNET(sync_ifp);
+VNET_DECLARE(struct pf_rule,		 pf_default_rule);
+#define	V_pf_default_rule		  VNET(pf_default_rule)
+extern void			 pf_addrcpy(struct pf_addr *, struct pf_addr *,
+				    u_int8_t);
+void				pf_free_rule(struct pf_rule *);
+
+#ifdef INET
+int	pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *);
+#endif /* INET */
+
+#ifdef INET6
+int	pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *);
+void	pf_poolmask(struct pf_addr *, struct pf_addr*,
+	    struct pf_addr *, struct pf_addr *, u_int8_t);
+void	pf_addr_inc(struct pf_addr *, sa_family_t);
+#endif /* INET6 */
+
+u_int32_t	pf_new_isn(struct pf_state *);
+void   *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
+	    sa_family_t);
+void	pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
+void	pf_send_deferred_syn(struct pf_state *);
+int	pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
+	    struct pf_addr *, sa_family_t);
+int	pf_match_addr_range(struct pf_addr *, struct pf_addr *,
+	    struct pf_addr *, sa_family_t);
+int	pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
+
+void	pf_normalize_init(void);
+void	pf_normalize_cleanup(void);
+int	pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
+	    struct pf_pdesc *);
+int	pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
+	    struct pf_pdesc *);
+int	pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
+	    struct pf_pdesc *);
+void	pf_normalize_tcp_cleanup(struct pf_state *);
+int	pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
+	    struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
+int	pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
+	    u_short *, struct tcphdr *, struct pf_state *,
+	    struct pf_state_peer *, struct pf_state_peer *, int *);
+u_int32_t
+	pf_state_expires(const struct pf_state *);
+void	pf_purge_expired_fragments(void);
+int	pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *,
+	    int);
+int	pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
+struct pf_state_key *pf_alloc_state_key(int);
+void	pfr_initialize(void);
+void	pfr_cleanup(void);
+int	pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
+void	pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
+	    u_int64_t, int, int, int);
+int	pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
+void	pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
+struct pfr_ktable *
+	pfr_attach_table(struct pf_ruleset *, char *);
+void	pfr_detach_table(struct pfr_ktable *);
+int	pfr_clr_tables(struct pfr_table *, int *, int);
+int	pfr_add_tables(struct pfr_table *, int, int *, int);
+int	pfr_del_tables(struct pfr_table *, int, int *, int);
+int	pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
+int	pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
+int	pfr_clr_tstats(struct pfr_table *, int, int *, int);
+int	pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
+int	pfr_clr_addrs(struct pfr_table *, int *, int);
+int	pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
+int	pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
+	    int);
+int	pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
+	    int);
+int	pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
+	    int *, int *, int *, int, u_int32_t);
+int	pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
+int	pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
+int	pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
+	    int);
+int	pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
+	    int);
+int	pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
+int	pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
+int	pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
+int	pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
+	    int *, u_int32_t, int);
+
+MALLOC_DECLARE(PFI_MTYPE);
+VNET_DECLARE(struct pfi_kif *,		 pfi_all);
+#define	V_pfi_all	 		 VNET(pfi_all)
+
+void		 pfi_initialize(void);
+void		 pfi_cleanup(void);
+void		 pfi_kif_ref(struct pfi_kif *);
+void		 pfi_kif_unref(struct pfi_kif *);
+struct pfi_kif	*pfi_kif_find(const char *);
+struct pfi_kif	*pfi_kif_attach(struct pfi_kif *, const char *);
+int		 pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
+void		 pfi_kif_purge(void);
+int		 pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
+		    sa_family_t);
+int		 pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
+void		 pfi_dynaddr_remove(struct pfi_dynaddr *);
+void		 pfi_dynaddr_copyout(struct pf_addr_wrap *);
+void		 pfi_update_status(const char *, struct pf_status *);
+void		 pfi_get_ifaces(const char *, struct pfi_kif *, int *);
+int		 pfi_set_flags(const char *, int);
+int		 pfi_clear_flags(const char *, int);
+
+int		 pf_match_tag(struct mbuf *, struct pf_rule *, int *, int);
+int		 pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
+void		 pf_qid2qname(u_int32_t, char *);
+
+VNET_DECLARE(struct pf_status,		 pf_status);
+#define	V_pf_status			 VNET(pf_status)
+
+struct pf_limit {
+	uma_zone_t	zone;
+	u_int		limit;
+};
+VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
+#define	V_pf_limits VNET(pf_limits)
+
+#endif /* _KERNEL */
+
+#ifdef _KERNEL
+VNET_DECLARE(struct pf_anchor_global,		 pf_anchors);
+#define	V_pf_anchors				 VNET(pf_anchors)
+VNET_DECLARE(struct pf_anchor,			 pf_main_anchor);
+#define	V_pf_main_anchor			 VNET(pf_main_anchor)
+#define pf_main_ruleset	V_pf_main_anchor.ruleset
+#endif
+
+/* these ruleset functions can be linked into userland programs (pfctl) */
+int			 pf_get_ruleset_number(u_int8_t);
+void			 pf_init_ruleset(struct pf_ruleset *);
+int			 pf_anchor_setup(struct pf_rule *,
+			    const struct pf_ruleset *, const char *);
+int			 pf_anchor_copyout(const struct pf_ruleset *,
+			    const struct pf_rule *, struct pfioc_rule *);
+void			 pf_anchor_remove(struct pf_rule *);
+void			 pf_remove_if_empty_ruleset(struct pf_ruleset *);
+struct pf_ruleset	*pf_find_ruleset(const char *);
+struct pf_ruleset	*pf_find_or_create_ruleset(const char *);
+void			 pf_rs_initialize(void);
+
+/* The fingerprint functions can be linked into userland programs (tcpdump) */
+int	pf_osfp_add(struct pf_osfp_ioctl *);
+#ifdef _KERNEL
+struct pf_osfp_enlist *
+	pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
+	    const struct tcphdr *);
+#endif /* _KERNEL */
+void	pf_osfp_flush(void);
+int	pf_osfp_get(struct pf_osfp_ioctl *);
+int	pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
+
+#ifdef _KERNEL
+void			 pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
+
+void			 pf_step_into_anchor(int *, struct pf_ruleset **, int,
+			    struct pf_rule **, struct pf_rule **, int *);
+int			 pf_step_out_of_anchor(int *, struct pf_ruleset **,
+			    int, struct pf_rule **, struct pf_rule **,
+			    int *);
+
+int			 pf_map_addr(u_int8_t, struct pf_rule *,
+			    struct pf_addr *, struct pf_addr *,
+			    struct pf_addr *, struct pf_src_node **);
+struct pf_rule		*pf_get_translation(struct pf_pdesc *, struct mbuf *,
+			    int, int, struct pfi_kif *, struct pf_src_node **,
+			    struct pf_state_key **, struct pf_state_key **,
+			    struct pf_addr *, struct pf_addr *,
+			    u_int16_t, u_int16_t);
+
+struct pf_state_key	*pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
+			    struct pf_addr *, u_int16_t, u_int16_t);
+struct pf_state_key	*pf_state_key_clone(struct pf_state_key *);
+#endif /* _KERNEL */
+
+#endif /* _NET_PFVAR_H_ */