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freebsd-dev/sys/contrib/pf/net/pfvar.h
Max Laier 4239d24b98 Make ALTQ cope with disappearing interfaces (particularly common with mpd 
and netgraph in gernal).  This also allows to add queues for an interface
that is not yet existing (you have to provide the bandwidth for the
interface, however).

PR:		kern/106400, kern/117827
MFC after:	2 weeks
2008-03-29 00:24:36 +00:00

1860 lines
53 KiB
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Raw Blame History

/* $FreeBSD$ */
/* $OpenBSD: pfvar.h,v 1.244 2007/02/23 21:31:51 deraadt 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>
#ifdef __FreeBSD__
#include <sys/lock.h>
#include <sys/sx.h>
#else
#include <sys/rwlock.h>
#endif
#include <net/radix.h>
#include <net/route.h>
#ifdef __FreeBSD__
#include <net/if_clone.h>
#include <net/pf_mtag.h>
#include <vm/uma.h>
#else
#include <netinet/ip_ipsp.h>
#endif
#ifdef __FreeBSD__
#include <netinet/in.h>
#endif
#include <netinet/tcp_fsm.h>
struct ip;
struct ip6_hdr;
#ifdef __FreeBSD__
struct inpcb;
#endif
#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
struct pf_addr_wrap {
union {
struct {
struct pf_addr addr;
struct pf_addr mask;
} a;
char ifname[IFNAMSIZ];
char tblname[PF_TABLE_NAME_SIZE];
#ifdef __FreeBSD__
#define RTLABEL_LEN 32
#endif
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 __FreeBSD__
#define splsoftnet() splnet()
#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 PR_NOWAIT M_NOWAIT
#define pool_get(p, f) uma_zalloc(*(p), (f))
#define pool_put(p, o) uma_zfree(*(p), (o))
#define UMA_CREATE(var, type, desc) \
var = uma_zcreate(desc, sizeof(type), \
NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); \
if (var == NULL) break
#define UMA_DESTROY(var) \
if(var) uma_zdestroy(var)
extern struct mtx pf_task_mtx;
#define PF_ASSERT(h) mtx_assert(&pf_task_mtx, (h))
#define PF_LOCK() do { \
PF_ASSERT(MA_NOTOWNED); \
mtx_lock(&pf_task_mtx); \
} while(0)
#define PF_UNLOCK() do { \
PF_ASSERT(MA_OWNED); \
mtx_unlock(&pf_task_mtx); \
} while(0)
#define PF_COPYIN(uaddr, kaddr, len, r) do { \
PF_UNLOCK(); \
r = copyin((uaddr), (kaddr), (len)); \
PF_LOCK(); \
} while(0)
#define PF_COPYOUT(kaddr, uaddr, len, r) do { \
PF_UNLOCK(); \
r = copyout((kaddr), (uaddr), (len)); \
PF_LOCK(); \
} while(0)
extern void init_pf_mutex(void);
extern void destroy_pf_mutex(void);
#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
#endif /* __FreeBSD__ */
#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 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 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, used in RB_FIND */
struct pf_state_cmp {
u_int64_t id;
u_int32_t creatorid;
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;
};
struct pf_state {
u_int64_t id;
u_int32_t creatorid;
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;
#ifdef __FreeBSD__
u_int8_t local_flags;
#define PFSTATE_EXPIRING 0x01
#else
u_int8_t pad;
#endif
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
union {
struct {
RB_ENTRY(pf_state) entry_lan_ext;
RB_ENTRY(pf_state) entry_ext_gwy;
RB_ENTRY(pf_state) entry_id;
TAILQ_ENTRY(pf_state) entry_list;
struct pfi_kif *kif;
} s;
char ifname[IFNAMSIZ];
} u;
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 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;
};
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);
RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state,
u.s.entry_lan_ext, pf_state_compare_lan_ext);
RB_HEAD(pf_state_tree_ext_gwy, pf_state);
RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state,
u.s.entry_ext_gwy, pf_state_compare_ext_gwy);
TAILQ_HEAD(pfi_statehead, pfi_kif);
RB_HEAD(pfi_ifhead, pfi_kif);
/* 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;
struct pf_state_tree_lan_ext pfik_lan_ext;
struct pf_state_tree_ext_gwy pfik_ext_gwy;
TAILQ_ENTRY(pfi_kif) pfik_w_states;
#ifndef __FreeBSD__
void *pfik_ah_cookie;
#endif
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 */
/* XXX: revisist */
#define PFI_IFLAG_SETABLE_MASK 0x0100 /* setable via DIOC{SET,CLR}IFFLAG */
#define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/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;
struct pf_mtag *pf_mtag;
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 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) \
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 */
#ifdef __FreeBSD__
u_int8_t local_flags; /* dynamic interface */
#define PFALTQ_FLAG_IF_REMOVED 0x01
#endif
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 */
};
#ifndef __FreeBSD__
#define PF_TAG_GENERATED 0x01
#define PF_TAG_FRAGCACHE 0x02
#define PF_TAG_TRANSLATE_LOCALHOST 0x04
struct pf_mtag {
void *hdr; /* saved hdr pos in mbuf, for ECN */
u_int rtableid; /* alternate routing table id */
u_int32_t qid; /* queue id */
u_int16_t tag; /* tag id */
u_int8_t flags;
u_int8_t routed;
sa_family_t af; /* for ECN */
};
#endif
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;
struct pf_state 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 {
caddr_t psu_buf;
struct pf_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
#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)
#ifdef __FreeBSD__
struct pf_ifspeed {
char ifname[IFNAMSIZ];
u_int32_t baudrate;
};
#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed)
#endif
#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 *);
#ifdef __FreeBSD__
#ifdef ALTQ
extern void pf_altq_ifnet_event(struct ifnet *, int);
#endif
extern uma_zone_t pf_src_tree_pl, pf_rule_pl;
extern uma_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
extern uma_zone_t pfr_ktable_pl, pfr_kentry_pl, pfr_kentry_pl2;
extern uma_zone_t pf_cache_pl, pf_cent_pl;
extern uma_zone_t pf_state_scrub_pl;
extern uma_zone_t pfi_addr_pl;
#else
extern struct pool pf_src_tree_pl, pf_rule_pl;
extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
extern struct pool pf_state_scrub_pl;
#endif
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_cmp *key,
u_int8_t tree, int *more);
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 *, struct pf_addr *,
u_int8_t);
void pf_rm_rule(struct pf_rulequeue *,
struct pf_rule *);
#ifdef INET
#ifdef __FreeBSD__
int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *,
struct inpcb *);
#else
int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *);
#endif
#endif /* INET */
#ifdef INET6
#ifdef __FreeBSD__
int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *,
struct inpcb *);
#else
int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *);
#endif
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 */
#ifdef __FreeBSD__
u_int32_t pf_new_isn(struct pf_state *);
#endif
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);
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 *);
#ifdef __FreeBSD__
int pf_socket_lookup(int, struct pf_pdesc *, struct inpcb *);
#else
int pf_socket_lookup(int, struct pf_pdesc *);
#endif
void pfr_initialize(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 *,
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_statehead pfi_statehead;
extern struct pfi_kif *pfi_all;
void pfi_initialize(void);
#ifdef __FreeBSD__
void pfi_cleanup(void);
#endif
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 *, struct pf_mtag *, int, int);
u_int32_t pf_qname2qid(char *);
void pf_qid2qname(u_int32_t, char *);
void pf_qid_unref(u_int32_t);
#ifndef __FreeBSD__
struct pf_mtag *pf_find_mtag(struct mbuf *);
struct pf_mtag *pf_get_mtag(struct mbuf *);
#endif
extern struct pf_status pf_status;
#ifdef __FreeBSD__
extern uma_zone_t pf_frent_pl, pf_frag_pl;
extern struct sx pf_consistency_lock;
#else
extern struct pool pf_frent_pl, pf_frag_pl;
extern struct rwlock pf_consistency_lock;
#endif
struct pf_pool_limit {
void *pp;
unsigned limit;
};
extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
#ifdef __FreeBSD__
struct pf_frent {
LIST_ENTRY(pf_frent) fr_next;
struct ip *fr_ip;
struct mbuf *fr_m;
};
struct pf_frcache {
LIST_ENTRY(pf_frcache) fr_next;
uint16_t fr_off;
uint16_t fr_end;
};
struct pf_fragment {
RB_ENTRY(pf_fragment) fr_entry;
TAILQ_ENTRY(pf_fragment) frag_next;
struct in_addr fr_src;
struct in_addr fr_dst;
u_int8_t fr_p; /* protocol of this fragment */
u_int8_t fr_flags; /* status flags */
u_int16_t fr_id; /* fragment id for reassemble */
u_int16_t fr_max; /* fragment data max */
u_int32_t fr_timeout;
#define fr_queue fr_u.fru_queue
#define fr_cache fr_u.fru_cache
union {
LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */
LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */
} fr_u;
};
#endif /* (__FreeBSD__) */
#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);
#ifndef __FreeBSD__
/* ?!? */
#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 */
#endif
/* 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 *);
#ifdef __FreeBSD__
int pf_osfp_initialize(void);
void pf_osfp_cleanup(void);
#else
void pf_osfp_initialize(void);
#endif
int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
struct pf_os_fingerprint *
pf_osfp_validate(void);
#endif /* _NET_PFVAR_H_ */
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