--- /dev/null
+/* $NetBSD: pfvar.h,v 1.22 2014/06/05 23:48:16 rmind Exp $ */
+/* $OpenBSD: pfvar.h,v 1.254 2007/07/13 09:17:48 markus 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/types.h>
+#include <sys/queue.h>
+#include <sys/tree.h>
+#include <sys/rwlock.h>
+
+#include <net/radix.h>
+#if !defined(__NetBSD__) && !defined(__minix)
+#include <net/route.h>
+#include <netinet/ip_ipsp.h>
+#else /* __NetBSD__ || __minix */
+/* files above include netinet/in.h so include it too for compatibility */
+#include <netinet/in.h>
+#endif /* __NetBSD__ || __minix */
+#include <netinet/tcp_fsm.h>
+
+#if defined(__NetBSD__) && defined(_KERNEL)
+#include <net/if_compat.h>
+#include <net/pf_mtag.h>
+#endif /* __NetBSD__ && _KERNEL */
+
+struct ip;
+struct ip6_hdr;
+
+#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_LAN_EXT, PF_EXT_GWY, PF_ID };
+enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
+ PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
+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 };
+
+/*
+ * 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_TABLES, 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_RTLABEL, PF_ADDR_URPFFAILED };
+#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
+
+#ifndef RTLABEL_LEN
+#define RTLABEL_LEN 32
+#endif
+
+struct pf_addr_wrap {
+ union {
+ struct {
+ struct pf_addr addr;
+ struct pf_addr mask;
+ } a;
+ char ifname[IFNAMSIZ];
+ char tblname[PF_TABLE_NAME_SIZE];
+ char rtlabelname[RTLABEL_LEN];
+ u_int32_t rtlabel;
+ } 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;
+ void *pfid_hook_cookie;
+ 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
+ */
+
+#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 */
+
+#define PF_MISMATCHAW(aw, x, af, neg, ifp) \
+ ( \
+ (((aw)->type == PF_ADDR_NOROUTE && \
+ pf_routable((x), (af), NULL)) || \
+ (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
+ pf_routable((x), (af), (ifp))) || \
+ ((aw)->type == PF_ADDR_RTLABEL && \
+ !pf_rtlabel_match((x), (af), (aw))) || \
+ ((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_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 port_op;
+ 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;
+ 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 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;
+
+ 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 anchor_relative;
+ u_int8_t anchor_wildcard;
+
+#define PF_FLUSH 0x01
+#define PF_FLUSH_GLOBAL 0x02
+ u_int8_t flush;
+};
+
+/* 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 */
+
+/* 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
+
+/* rule flags again */
+#define PFRULE_IFBOUND 0x00010000 /* if-bound */
+
+#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 {
+ RB_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 {
+ 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_int8_t state; /* active state level */
+ u_int8_t wscale; /* window scaling factor */
+ u_int16_t mss; /* Maximum segment size option */
+ u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
+ struct pf_state_scrub *scrub; /* state is scrubbed */
+ u_int8_t pad[3];
+};
+
+TAILQ_HEAD(pf_state_queue, pf_state);
+
+/* keep synced with struct pf_state_key, used in RB_FIND */
+struct pf_state_key_cmp {
+ struct pf_state_host lan;
+ struct pf_state_host gwy;
+ struct pf_state_host ext;
+ sa_family_t af;
+ u_int8_t proto;
+ u_int8_t direction;
+ u_int8_t pad;
+};
+
+TAILQ_HEAD(pf_statelist, pf_state);
+
+struct pf_state_key {
+ struct pf_state_host lan;
+ struct pf_state_host gwy;
+ struct pf_state_host ext;
+ sa_family_t af;
+ u_int8_t proto;
+ u_int8_t direction;
+ u_int8_t pad;
+
+ RB_ENTRY(pf_state_key) entry_lan_ext;
+ RB_ENTRY(pf_state_key) entry_ext_gwy;
+ struct pf_statelist states;
+ u_short refcnt; /* same size as if_index */
+};
+
+
+/* keep synced with struct pf_state, used in RB_FIND */
+struct pf_state_cmp {
+ u_int64_t id;
+ u_int32_t creatorid;
+ u_int32_t pad;
+};
+
+struct pf_state {
+ u_int64_t id;
+ u_int32_t creatorid;
+ u_int32_t pad;
+
+ TAILQ_ENTRY(pf_state) entry_list;
+ TAILQ_ENTRY(pf_state) next;
+ RB_ENTRY(pf_state) entry_id;
+ 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 *state_key;
+ 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 allow_opts;
+ u_int8_t timeout;
+ u_int8_t sync_flags;
+#define PFSTATE_NOSYNC 0x01
+#define PFSTATE_FROMSYNC 0x02
+#define PFSTATE_STALE 0x04
+};
+
+/*
+ * 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_host {
+ struct pf_addr addr;
+ u_int16_t port;
+ u_int16_t pad[3];
+} __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 {
+ u_int32_t id[2];
+ char ifname[IFNAMSIZ];
+ struct pfsync_state_host lan;
+ struct pfsync_state_host gwy;
+ struct pfsync_state_host ext;
+ 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 log;
+ u_int8_t allow_opts;
+ u_int8_t timeout;
+ u_int8_t sync_flags;
+ u_int8_t updates;
+} __packed;
+
+#define PFSYNC_FLAG_COMPRESS 0x01
+#define PFSYNC_FLAG_STALE 0x02
+#define PFSYNC_FLAG_SRCNODE 0x04
+#define PFSYNC_FLAG_NATSRCNODE 0x08
+
+/* for copies to/from userland via pf_ioctl() */
+#define pf_state_peer_to_pfsync(s,d) do { \
+ (d)->seqlo = (s)->seqlo; \
+ (d)->seqhi = (s)->seqhi; \
+ (d)->seqdiff = (s)->seqdiff; \
+ (d)->max_win = (s)->max_win; \
+ (d)->mss = (s)->mss; \
+ (d)->state = (s)->state; \
+ (d)->wscale = (s)->wscale; \
+ if ((s)->scrub) { \
+ (d)->scrub.pfss_flags = \
+ (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \
+ (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
+ (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \
+ (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
+ } \
+} while (0)
+
+#define pf_state_peer_from_pfsync(s,d) do { \
+ (d)->seqlo = (s)->seqlo; \
+ (d)->seqhi = (s)->seqhi; \
+ (d)->seqdiff = (s)->seqdiff; \
+ (d)->max_win = (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 = (s)->scrub.pfss_ts_mod; \
+ } \
+} while (0)
+
+#define pf_state_counter_to_pfsync(s,d) do { \
+ d[0] = (s>>32)&0xffffffff; \
+ d[1] = s&0xffffffff; \
+} while (0)
+
+#define pf_state_counter_from_pfsync(s) \
+ (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
+
+
+
+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_USRMASK 0x00000003
+#define PFR_TFLAG_SETMASK 0x0000003C
+#define PFR_TFLAG_ALLMASK 0x0000003F
+
+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_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 */
+
+SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
+struct pfr_kentry {
+ struct radix_node pfrke_node[2];
+ union sockaddr_union pfrke_sa;
+ u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
+ u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
+ SLIST_ENTRY(pfr_kentry) pfrke_workq;
+ long pfrke_tzero;
+ u_int8_t pfrke_af;
+ u_int8_t pfrke_net;
+ u_int8_t pfrke_not;
+ u_int8_t pfrke_mark;
+ u_int8_t pfrke_intrpool;
+};
+
+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
+
+RB_HEAD(pf_state_tree_lan_ext, pf_state_key);
+RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state_key,
+ entry_lan_ext, pf_state_compare_lan_ext);
+
+RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
+RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key,
+ entry_ext_gwy, pf_state_compare_ext_gwy);
+
+RB_HEAD(pfi_ifhead, pfi_kif);
+
+/* state tables */
+extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
+extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
+
+/* keep synced with pfi_kif, used in RB_FIND */
+struct pfi_kif_cmp {
+ char pfik_name[IFNAMSIZ];
+};
+
+struct pfi_kif {
+ char pfik_name[IFNAMSIZ];
+ RB_ENTRY(pfi_kif) pfik_tree;
+ u_int64_t pfik_packets[2][2][2];
+ u_int64_t pfik_bytes[2][2][2];
+ u_int32_t pfik_tzero;
+ int pfik_flags;
+ void *pfik_ah_cookie;
+ struct ifnet *pfik_ifp;
+ struct ifg_group *pfik_group;
+ int pfik_states;
+ int pfik_rules;
+ TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
+};
+
+enum pfi_kif_refs {
+ PFI_KIF_REF_NONE,
+ PFI_KIF_REF_STATE,
+ PFI_KIF_REF_RULE
+};
+
+#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
+
+struct pf_pdesc {
+ struct {
+ int done;
+ uid_t uid;
+ gid_t gid;
+ pid_t pid;
+ } 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_addr baddr; /* address before translation */
+ struct pf_addr naddr; /* address after translation */
+ struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
+ struct pf_addr *src;
+ struct pf_addr *dst;
+ struct ether_header
+ *eh;
+ u_int16_t *ip_sum;
+ u_int32_t p_len; /* total length of payload */
+ 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;
+};
+
+/* 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 IP queue) */
+#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_STATELOCKED 15 /* state table locked */
+#define PFRES_MAX 16 /* 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", \
+ "state-locked", \
+ 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) \
+ pf_status.counters[x]++; \
+ } while (0)
+#define REASON_SET_NOPTR(a, x) \
+ do { \
+ *(a) = (x); \
+ if (x < PFRES_MAX) \
+ 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_int64_t stateid;
+ 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_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_tag {
+ u_int16_t tag; /* tag id */
+};
+
+struct pf_tagname {
+ TAILQ_ENTRY(pf_tagname) entries;
+ char name[PF_TAG_NAME_SIZE];
+ u_int16_t tag;
+ int ref;
+};
+
+#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
+#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
+#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
+#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
+
+#define PFR_KTABLE_HIWAT 1000 /* Number of tables */
+#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
+#define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
+
+/*
+ * 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 {
+ u_int32_t nr;
+ void *state;
+};
+
+struct pfioc_src_node_kill {
+ /* XXX returns the number of src nodes killed in psnk_af */
+ sa_family_t psnk_af;
+ struct pf_rule_addr psnk_src;
+ struct pf_rule_addr psnk_dst;
+};
+
+struct pfioc_state_kill {
+ /* XXX returns the number of states killed in psk_af */
+ sa_family_t psk_af;
+ int psk_proto;
+ struct pf_rule_addr psk_src;
+ struct pf_rule_addr psk_dst;
+ char psk_ifname[IFNAMSIZ];
+};
+
+struct pfioc_states {
+ int ps_len;
+ union {
+ void *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 {
+ void *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
+#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)
+#define DIOCSETLCK _IOWR('D', 8, uint32_t)
+/* XXX cut 9 - 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)
+#define DIOCADDSTATES _IOWR('D', 56, struct pfioc_states)
+/* XXX cut 57 - 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)
+
+#ifdef _KERNEL
+RB_HEAD(pf_src_tree, pf_src_node);
+RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare);
+extern struct pf_src_tree tree_src_tracking;
+
+RB_HEAD(pf_state_tree_id, pf_state);
+RB_PROTOTYPE(pf_state_tree_id, pf_state,
+ entry_id, pf_state_compare_id);
+extern struct pf_state_tree_id tree_id;
+extern struct pf_state_queue state_list;
+
+TAILQ_HEAD(pf_poolqueue, pf_pool);
+extern struct pf_poolqueue pf_pools[2];
+TAILQ_HEAD(pf_altqqueue, pf_altq);
+extern struct pf_altqqueue pf_altqs[2];
+extern struct pf_palist pf_pabuf;
+
+extern u_int32_t ticket_altqs_active;
+extern u_int32_t ticket_altqs_inactive;
+extern int altqs_inactive_open;
+extern u_int32_t ticket_pabuf;
+extern struct pf_altqqueue *pf_altqs_active;
+extern struct pf_altqqueue *pf_altqs_inactive;
+extern struct pf_poolqueue *pf_pools_active;
+extern struct pf_poolqueue *pf_pools_inactive;
+extern int pf_tbladdr_setup(struct pf_ruleset *,
+ struct pf_addr_wrap *);
+extern void pf_tbladdr_remove(struct pf_addr_wrap *);
+extern void pf_tbladdr_copyout(struct pf_addr_wrap *);
+extern void pf_calc_skip_steps(struct pf_rulequeue *);
+extern struct pool pf_src_tree_pl, pf_rule_pl;
+extern struct pool pf_state_pl, pf_state_key_pl, pf_altq_pl,
+ pf_pooladdr_pl;
+extern struct pool pf_state_scrub_pl;
+extern void pf_purge_thread(void *);
+extern void pf_purge_expired_src_nodes(int);
+extern void pf_purge_expired_states(u_int32_t);
+extern void pf_unlink_state(struct pf_state *);
+extern void pf_free_state(struct pf_state *);
+extern int pf_insert_state(struct pfi_kif *,
+ struct pf_state *);
+extern int pf_insert_src_node(struct pf_src_node **,
+ struct pf_rule *, struct pf_addr *,
+ sa_family_t);
+void pf_src_tree_remove_state(struct pf_state *);
+extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
+extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
+ u_int8_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);
+
+extern struct ifnet *sync_ifp;
+extern struct pf_rule pf_default_rule;
+extern void pf_addrcpy(struct pf_addr *,
+ const struct pf_addr *, u_int8_t);
+void pf_rm_rule(struct pf_rulequeue *,
+ struct pf_rule *);
+
+#ifdef INET
+int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *);
+#endif /* INET */
+
+#ifdef INET6
+int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *);
+void pf_poolmask(struct pf_addr *, struct pf_addr*,
+ struct pf_addr *, const struct pf_addr *, u_int8_t);
+void pf_addr_inc(struct pf_addr *, sa_family_t);
+#endif /* INET6 */
+
+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);
+int pflog_packet(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 pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
+ struct pf_addr *, sa_family_t);
+int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
+int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
+int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
+int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
+
+void pf_normalize_init(void);
+#ifdef _MODULE
+void pf_normalize_destroy(void);
+#endif /* _MODULE */
+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 pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *);
+int pf_socket_lookup(int, struct pf_pdesc *);
+struct pf_state_key *
+ pf_alloc_state_key(struct pf_state *);
+void pfr_initialize(void);
+#ifdef _MODULE
+void pfr_destroy(void);
+#endif /* _MODULE */
+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 *,
+ struct pf_addr **, 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);
+
+extern struct pfi_kif *pfi_all;
+
+void pfi_initialize(void);
+#ifdef _MODULE
+void pfi_destroy(void);
+#endif /* _MODULE */
+struct pfi_kif *pfi_kif_get(const char *);
+void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
+void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
+int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
+void pfi_attach_ifnet(struct ifnet *);
+void pfi_detach_ifnet(struct ifnet *);
+void pfi_attach_ifgroup(struct ifg_group *);
+void pfi_detach_ifgroup(struct ifg_group *);
+void pfi_group_change(const char *);
+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 pf_addr_wrap *);
+void pfi_dynaddr_copyout(struct pf_addr_wrap *);
+void pfi_fill_oldstatus(struct pf_status *);
+int pfi_clr_istats(const char *);
+int pfi_get_ifaces(const char *, struct pfi_kif *, int *);
+int pfi_set_flags(const char *, int);
+int pfi_clear_flags(const char *, int);
+
+u_int16_t pf_tagname2tag(char *);
+void pf_tag2tagname(u_int16_t, char *);
+void pf_tag_ref(u_int16_t);
+void pf_tag_unref(u_int16_t);
+int pf_tag_packet(struct mbuf *, int, int);
+u_int32_t pf_qname2qid(char *);
+void pf_qid2qname(u_int32_t, char *);
+void pf_qid_unref(u_int32_t);
+
+extern struct pf_status pf_status;
+extern struct pool pf_frent_pl, pf_frag_pl;
+#ifdef __NetBSD__
+extern krwlock_t pf_consistency_lock;
+#else
+extern struct rwlock pf_consistency_lock;
+#endif /* !__NetBSD__ */
+
+struct pf_pool_limit {
+ void *pp;
+ unsigned limit;
+};
+extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
+
+/*
+ * misc compatibility definitions
+ */
+#if !defined(PRIu32)
+#define PRIu32 "u" /* XXX */
+#endif
+
+#if !defined(NO_PID)
+#define NO_PID (PID_MAX + 1)
+#endif
+
+#if defined(__NetBSD__)
+/* rwlock compatibility definitions */
+#define rw_enter_write(a) rw_enter((a), (RW_WRITER))
+#define rw_exit_write(a) rw_exit((a))
+#define rw_enter_read(a) rw_enter((a), (RW_READER))
+#define rw_exit_read(a) rw_exit((a))
+#endif /* __NetBSD__ */
+
+#endif /* _KERNEL */
+
+extern struct pf_anchor_global pf_anchors;
+extern struct pf_anchor pf_main_anchor;
+#define pf_main_ruleset pf_main_anchor.ruleset
+
+/* 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_anchor *pf_find_anchor(const char *);
+struct pf_ruleset *pf_find_ruleset(const char *);
+struct pf_ruleset *pf_find_or_create_ruleset(const char *);
+void pf_rs_initialize(void);
+
+#ifdef _KERNEL
+int pf_anchor_copyout(const struct pf_ruleset *,
+ const struct pf_rule *, struct pfioc_rule *);
+void pf_anchor_remove(struct pf_rule *);
+
+#endif /* _KERNEL */
+
+/* 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 */
+struct pf_osfp_enlist *
+ pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *,
+ const struct tcphdr *);
+void pf_osfp_flush(void);
+int pf_osfp_get(struct pf_osfp_ioctl *);
+void pf_osfp_initialize(void);
+#ifdef _MODULE
+void pf_osfp_destroy(void);
+#endif /* _MODULE */
+int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
+struct pf_os_fingerprint *
+ pf_osfp_validate(void);
+
+
+#endif /* _NET_PFVAR_H_ */