44e0d5a8df
Submitted by: Ermal Luçi Approved by: re (kensmith)
1853 lines
52 KiB
C
1853 lines
52 KiB
C
/* $FreeBSD$ */
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/* $OpenBSD: pfvar.h,v 1.244 2007/02/23 21:31:51 deraadt Exp $ */
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/*
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* Copyright (c) 2001 Daniel Hartmeier
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _NET_PFVAR_H_
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#define _NET_PFVAR_H_
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/tree.h>
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#ifdef __FreeBSD__
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#include <sys/lock.h>
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#include <sys/sx.h>
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#else
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#include <sys/rwlock.h>
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#endif
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#include <net/radix.h>
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#include <net/route.h>
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#ifdef __FreeBSD__
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#include <net/if_clone.h>
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#include <net/pf_mtag.h>
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#include <vm/uma.h>
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#else
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#include <netinet/ip_ipsp.h>
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#endif
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#ifdef __FreeBSD__
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#include <netinet/in.h>
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#endif
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#include <netinet/tcp_fsm.h>
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struct ip;
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struct ip6_hdr;
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#ifdef __FreeBSD__
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struct inpcb;
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#endif
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#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
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#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
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#define PF_MD5_DIGEST_LENGTH 16
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#ifdef MD5_DIGEST_LENGTH
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#if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
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#error
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#endif
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#endif
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enum { PF_INOUT, PF_IN, PF_OUT };
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enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID };
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enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
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PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
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enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
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PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
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enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
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PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
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enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
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enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
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PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
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PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
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enum { PF_GET_NONE, PF_GET_CLR_CNTR };
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/*
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* Note about PFTM_*: real indices into pf_rule.timeout[] come before
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* PFTM_MAX, special cases afterwards. See pf_state_expires().
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*/
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enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
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PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
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PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
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PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
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PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
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PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
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PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
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PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED,
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PFTM_UNTIL_PACKET };
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/* PFTM default values */
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#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
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#define PFTM_TCP_OPENING_VAL 30 /* No response yet */
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#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
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#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
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#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
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#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
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#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
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#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
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#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
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#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
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#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
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#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
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#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
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#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
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#define PFTM_FRAG_VAL 30 /* Fragment expire */
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#define PFTM_INTERVAL_VAL 10 /* Expire interval */
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#define PFTM_SRC_NODE_VAL 0 /* Source tracking */
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#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
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enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
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enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
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PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
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#define PF_POOL_IDMASK 0x0f
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enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
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PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
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enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
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PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED };
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#define PF_POOL_TYPEMASK 0x0f
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#define PF_POOL_STICKYADDR 0x20
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#define PF_WSCALE_FLAG 0x80
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#define PF_WSCALE_MASK 0x0f
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#define PF_LOG 0x01
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#define PF_LOG_ALL 0x02
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#define PF_LOG_SOCKET_LOOKUP 0x04
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struct pf_addr {
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union {
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struct in_addr v4;
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struct in6_addr v6;
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u_int8_t addr8[16];
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u_int16_t addr16[8];
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u_int32_t addr32[4];
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} pfa; /* 128-bit address */
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#define v4 pfa.v4
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#define v6 pfa.v6
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#define addr8 pfa.addr8
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#define addr16 pfa.addr16
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#define addr32 pfa.addr32
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};
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#define PF_TABLE_NAME_SIZE 32
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#define PFI_AFLAG_NETWORK 0x01
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#define PFI_AFLAG_BROADCAST 0x02
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#define PFI_AFLAG_PEER 0x04
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#define PFI_AFLAG_MODEMASK 0x07
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#define PFI_AFLAG_NOALIAS 0x08
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struct pf_addr_wrap {
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union {
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struct {
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struct pf_addr addr;
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struct pf_addr mask;
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} a;
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char ifname[IFNAMSIZ];
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char tblname[PF_TABLE_NAME_SIZE];
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#ifdef __FreeBSD__
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#define RTLABEL_LEN 32
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#endif
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char rtlabelname[RTLABEL_LEN];
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u_int32_t rtlabel;
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} v;
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union {
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struct pfi_dynaddr *dyn;
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struct pfr_ktable *tbl;
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int dyncnt;
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int tblcnt;
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} p;
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u_int8_t type; /* PF_ADDR_* */
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u_int8_t iflags; /* PFI_AFLAG_* */
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};
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#ifdef _KERNEL
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struct pfi_dynaddr {
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TAILQ_ENTRY(pfi_dynaddr) entry;
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struct pf_addr pfid_addr4;
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struct pf_addr pfid_mask4;
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struct pf_addr pfid_addr6;
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struct pf_addr pfid_mask6;
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struct pfr_ktable *pfid_kt;
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struct pfi_kif *pfid_kif;
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void *pfid_hook_cookie;
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int pfid_net; /* mask or 128 */
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int pfid_acnt4; /* address count IPv4 */
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int pfid_acnt6; /* address count IPv6 */
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sa_family_t pfid_af; /* rule af */
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u_int8_t pfid_iflags; /* PFI_AFLAG_* */
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};
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/*
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* Address manipulation macros
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*/
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#ifdef __FreeBSD__
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#define splsoftnet() splnet()
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#define HTONL(x) (x) = htonl((__uint32_t)(x))
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#define HTONS(x) (x) = htons((__uint16_t)(x))
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#define NTOHL(x) (x) = ntohl((__uint32_t)(x))
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#define NTOHS(x) (x) = ntohs((__uint16_t)(x))
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#define PF_NAME "pf"
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#define PR_NOWAIT M_NOWAIT
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#define pool_get(p, f) uma_zalloc(*(p), (f))
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#define pool_put(p, o) uma_zfree(*(p), (o))
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#define UMA_CREATE(var, type, desc) \
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var = uma_zcreate(desc, sizeof(type), \
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NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); \
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if (var == NULL) break
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#define UMA_DESTROY(var) \
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if(var) uma_zdestroy(var)
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extern struct mtx pf_task_mtx;
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#define PF_ASSERT(h) mtx_assert(&pf_task_mtx, (h))
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#define PF_LOCK() do { \
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PF_ASSERT(MA_NOTOWNED); \
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mtx_lock(&pf_task_mtx); \
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} while(0)
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#define PF_UNLOCK() do { \
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PF_ASSERT(MA_OWNED); \
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mtx_unlock(&pf_task_mtx); \
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} while(0)
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#define PF_COPYIN(uaddr, kaddr, len, r) do { \
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PF_UNLOCK(); \
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r = copyin((uaddr), (kaddr), (len)); \
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PF_LOCK(); \
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} while(0)
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#define PF_COPYOUT(kaddr, uaddr, len, r) do { \
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PF_UNLOCK(); \
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r = copyout((kaddr), (uaddr), (len)); \
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PF_LOCK(); \
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} while(0)
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extern void init_pf_mutex(void);
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extern void destroy_pf_mutex(void);
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#define PF_MODVER 1
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#define PFLOG_MODVER 1
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#define PFSYNC_MODVER 1
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#define PFLOG_MINVER 1
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#define PFLOG_PREFVER PFLOG_MODVER
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#define PFLOG_MAXVER 1
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#define PFSYNC_MINVER 1
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#define PFSYNC_PREFVER PFSYNC_MODVER
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#define PFSYNC_MAXVER 1
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#endif /* __FreeBSD__ */
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#ifdef INET
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#ifndef INET6
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#define PF_INET_ONLY
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#endif /* ! INET6 */
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#endif /* INET */
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#ifdef INET6
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#ifndef INET
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#define PF_INET6_ONLY
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#endif /* ! INET */
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#endif /* INET6 */
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#ifdef INET
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#ifdef INET6
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#define PF_INET_INET6
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#endif /* INET6 */
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#endif /* INET */
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#else
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#define PF_INET_INET6
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#endif /* _KERNEL */
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/* Both IPv4 and IPv6 */
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#ifdef PF_INET_INET6
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#define PF_AEQ(a, b, c) \
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((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
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((a)->addr32[3] == (b)->addr32[3] && \
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(a)->addr32[2] == (b)->addr32[2] && \
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(a)->addr32[1] == (b)->addr32[1] && \
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(a)->addr32[0] == (b)->addr32[0])) \
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#define PF_ANEQ(a, b, c) \
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((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
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((a)->addr32[3] != (b)->addr32[3] || \
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(a)->addr32[2] != (b)->addr32[2] || \
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(a)->addr32[1] != (b)->addr32[1] || \
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(a)->addr32[0] != (b)->addr32[0])) \
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#define PF_AZERO(a, c) \
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((c == AF_INET && !(a)->addr32[0]) || \
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(!(a)->addr32[0] && !(a)->addr32[1] && \
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!(a)->addr32[2] && !(a)->addr32[3] )) \
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#define PF_MATCHA(n, a, m, b, f) \
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pf_match_addr(n, a, m, b, f)
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#define PF_ACPY(a, b, f) \
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pf_addrcpy(a, b, f)
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#define PF_AINC(a, f) \
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pf_addr_inc(a, f)
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#define PF_POOLMASK(a, b, c, d, f) \
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pf_poolmask(a, b, c, d, f)
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#else
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/* Just IPv6 */
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#ifdef PF_INET6_ONLY
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#define PF_AEQ(a, b, c) \
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((a)->addr32[3] == (b)->addr32[3] && \
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(a)->addr32[2] == (b)->addr32[2] && \
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(a)->addr32[1] == (b)->addr32[1] && \
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(a)->addr32[0] == (b)->addr32[0]) \
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#define PF_ANEQ(a, b, c) \
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((a)->addr32[3] != (b)->addr32[3] || \
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(a)->addr32[2] != (b)->addr32[2] || \
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(a)->addr32[1] != (b)->addr32[1] || \
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(a)->addr32[0] != (b)->addr32[0]) \
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#define PF_AZERO(a, c) \
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(!(a)->addr32[0] && \
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!(a)->addr32[1] && \
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!(a)->addr32[2] && \
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!(a)->addr32[3] ) \
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#define PF_MATCHA(n, a, m, b, f) \
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pf_match_addr(n, a, m, b, f)
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#define PF_ACPY(a, b, f) \
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pf_addrcpy(a, b, f)
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#define PF_AINC(a, f) \
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pf_addr_inc(a, f)
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#define PF_POOLMASK(a, b, c, d, f) \
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pf_poolmask(a, b, c, d, f)
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#else
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/* Just IPv4 */
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#ifdef PF_INET_ONLY
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#define PF_AEQ(a, b, c) \
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((a)->addr32[0] == (b)->addr32[0])
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#define PF_ANEQ(a, b, c) \
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((a)->addr32[0] != (b)->addr32[0])
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#define PF_AZERO(a, c) \
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(!(a)->addr32[0])
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#define PF_MATCHA(n, a, m, b, f) \
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pf_match_addr(n, a, m, b, f)
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#define PF_ACPY(a, b, f) \
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(a)->v4.s_addr = (b)->v4.s_addr
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#define PF_AINC(a, f) \
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do { \
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(a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
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} while (0)
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#define PF_POOLMASK(a, b, c, d, f) \
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do { \
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(a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
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(((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
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} while (0)
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#endif /* PF_INET_ONLY */
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#endif /* PF_INET6_ONLY */
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#endif /* PF_INET_INET6 */
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#define PF_MISMATCHAW(aw, x, af, neg, ifp) \
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( \
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(((aw)->type == PF_ADDR_NOROUTE && \
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pf_routable((x), (af), NULL)) || \
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(((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
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pf_routable((x), (af), (ifp))) || \
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((aw)->type == PF_ADDR_RTLABEL && \
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!pf_rtlabel_match((x), (af), (aw))) || \
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((aw)->type == PF_ADDR_TABLE && \
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!pfr_match_addr((aw)->p.tbl, (x), (af))) || \
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((aw)->type == PF_ADDR_DYNIFTL && \
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!pfi_match_addr((aw)->p.dyn, (x), (af))) || \
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((aw)->type == PF_ADDR_ADDRMASK && \
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!PF_AZERO(&(aw)->v.a.mask, (af)) && \
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!PF_MATCHA(0, &(aw)->v.a.addr, \
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&(aw)->v.a.mask, (x), (af))))) != \
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(neg) \
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)
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struct pf_rule_uid {
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uid_t uid[2];
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u_int8_t op;
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};
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struct pf_rule_gid {
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uid_t gid[2];
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u_int8_t op;
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};
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struct pf_rule_addr {
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struct pf_addr_wrap addr;
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u_int16_t port[2];
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u_int8_t neg;
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u_int8_t port_op;
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};
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struct pf_pooladdr {
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struct pf_addr_wrap addr;
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TAILQ_ENTRY(pf_pooladdr) entries;
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char ifname[IFNAMSIZ];
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struct pfi_kif *kif;
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};
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TAILQ_HEAD(pf_palist, pf_pooladdr);
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struct pf_poolhashkey {
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|
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 */
|
|
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__
|
|
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 *);
|
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void pf_qid2qname(u_int32_t, char *);
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void pf_qid_unref(u_int32_t);
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#ifndef __FreeBSD__
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struct pf_mtag *pf_find_mtag(struct mbuf *);
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struct pf_mtag *pf_get_mtag(struct mbuf *);
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#endif
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extern struct pf_status pf_status;
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#ifdef __FreeBSD__
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extern uma_zone_t pf_frent_pl, pf_frag_pl;
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extern struct sx pf_consistency_lock;
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#else
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extern struct pool pf_frent_pl, pf_frag_pl;
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extern struct rwlock pf_consistency_lock;
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#endif
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struct pf_pool_limit {
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void *pp;
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unsigned limit;
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};
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extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
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#ifdef __FreeBSD__
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struct pf_frent {
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LIST_ENTRY(pf_frent) fr_next;
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struct ip *fr_ip;
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struct mbuf *fr_m;
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};
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struct pf_frcache {
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LIST_ENTRY(pf_frcache) fr_next;
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uint16_t fr_off;
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uint16_t fr_end;
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};
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struct pf_fragment {
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RB_ENTRY(pf_fragment) fr_entry;
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TAILQ_ENTRY(pf_fragment) frag_next;
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struct in_addr fr_src;
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struct in_addr fr_dst;
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u_int8_t fr_p; /* protocol of this fragment */
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u_int8_t fr_flags; /* status flags */
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u_int16_t fr_id; /* fragment id for reassemble */
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u_int16_t fr_max; /* fragment data max */
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u_int32_t fr_timeout;
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#define fr_queue fr_u.fru_queue
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#define fr_cache fr_u.fru_cache
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union {
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LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */
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LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */
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} fr_u;
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};
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#endif /* (__FreeBSD__) */
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#endif /* _KERNEL */
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extern struct pf_anchor_global pf_anchors;
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extern struct pf_anchor pf_main_anchor;
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#define pf_main_ruleset pf_main_anchor.ruleset
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/* these ruleset functions can be linked into userland programs (pfctl) */
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int pf_get_ruleset_number(u_int8_t);
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void pf_init_ruleset(struct pf_ruleset *);
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|
int pf_anchor_setup(struct pf_rule *,
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const struct pf_ruleset *, const char *);
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int pf_anchor_copyout(const struct pf_ruleset *,
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const struct pf_rule *, struct pfioc_rule *);
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void pf_anchor_remove(struct pf_rule *);
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void pf_remove_if_empty_ruleset(struct pf_ruleset *);
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|
struct pf_anchor *pf_find_anchor(const char *);
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|
struct pf_ruleset *pf_find_ruleset(const char *);
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|
struct pf_ruleset *pf_find_or_create_ruleset(const char *);
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|
void pf_rs_initialize(void);
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|
|
|
#ifndef __FreeBSD__
|
|
/* ?!? */
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|
#ifdef _KERNEL
|
|
int pf_anchor_copyout(const struct pf_ruleset *,
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|
const struct pf_rule *, struct pfioc_rule *);
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|
void pf_anchor_remove(struct pf_rule *);
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#endif /* _KERNEL */
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|
#endif
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|
|
|
/* The fingerprint functions can be linked into userland programs (tcpdump) */
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|
int pf_osfp_add(struct pf_osfp_ioctl *);
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|
#ifdef _KERNEL
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|
struct pf_osfp_enlist *
|
|
pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
|
|
const struct tcphdr *);
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|
#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);
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|
|
|
|
|
#endif /* _NET_PFVAR_H_ */
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