2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2001 Daniel Hartmeier
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
31 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $
38 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
39 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
41 #define PF_MD5_DIGEST_LENGTH 16
42 #ifdef MD5_DIGEST_LENGTH
43 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
48 enum { PF_INOUT, PF_IN, PF_OUT };
49 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
50 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER };
51 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
52 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
53 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
54 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
55 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
56 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
57 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
58 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
59 enum { PF_GET_NONE, PF_GET_CLR_CNTR };
60 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH };
63 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
64 * PFTM_MAX, special cases afterwards. See pf_state_expires().
66 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
67 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
68 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
69 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
70 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
71 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
72 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
73 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED };
75 /* PFTM default values */
76 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
77 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */
78 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
79 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
80 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
81 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
82 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
83 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
84 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
85 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
86 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
87 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
88 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
89 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
90 #define PFTM_FRAG_VAL 30 /* Fragment expire */
91 #define PFTM_INTERVAL_VAL 10 /* Expire interval */
92 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */
93 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
95 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
96 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
97 PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
98 #define PF_POOL_IDMASK 0x0f
99 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
100 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
101 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
102 PF_ADDR_TABLE, PF_ADDR_URPFFAILED,
104 #define PF_POOL_TYPEMASK 0x0f
105 #define PF_POOL_STICKYADDR 0x20
106 #define PF_WSCALE_FLAG 0x80
107 #define PF_WSCALE_MASK 0x0f
110 #define PF_LOG_ALL 0x02
111 #define PF_LOG_SOCKET_LOOKUP 0x04
113 /* Reasons code for passing/dropping a packet */
114 #define PFRES_MATCH 0 /* Explicit match of a rule */
115 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
116 #define PFRES_FRAG 2 /* Dropping following fragment */
117 #define PFRES_SHORT 3 /* Dropping short packet */
118 #define PFRES_NORM 4 /* Dropping by normalizer */
119 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */
120 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
121 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
122 #define PFRES_IPOPTIONS 8 /* IP option */
123 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
124 #define PFRES_BADSTATE 10 /* State mismatch */
125 #define PFRES_STATEINS 11 /* State insertion failure */
126 #define PFRES_MAXSTATES 12 /* State limit */
127 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */
128 #define PFRES_SYNPROXY 14 /* SYN proxy */
129 #define PFRES_MAPFAILED 15 /* pf_map_addr() failed */
130 #define PFRES_MAX 16 /* total+1 */
132 #define PFRES_NAMES { \
152 /* Counters for other things we want to keep track of */
153 #define LCNT_STATES 0 /* states */
154 #define LCNT_SRCSTATES 1 /* max-src-states */
155 #define LCNT_SRCNODES 2 /* max-src-nodes */
156 #define LCNT_SRCCONN 3 /* max-src-conn */
157 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
158 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
159 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
160 #define LCNT_MAX 7 /* total+1 */
162 #define LCNT_NAMES { \
163 "max states per rule", \
167 "max-src-conn-rate", \
168 "overload table insertion", \
169 "overload flush states", \
173 /* state operation counters */
174 #define FCNT_STATE_SEARCH 0
175 #define FCNT_STATE_INSERT 1
176 #define FCNT_STATE_REMOVALS 2
179 /* src_node operation counters */
180 #define SCNT_SRC_NODE_SEARCH 0
181 #define SCNT_SRC_NODE_INSERT 1
182 #define SCNT_SRC_NODE_REMOVALS 2
185 #define PF_TABLE_NAME_SIZE 32
186 #define PF_QNAME_SIZE 64
189 uint64_t counters[PFRES_MAX];
190 uint64_t lcounters[LCNT_MAX];
191 uint64_t fcounters[FCNT_MAX];
192 uint64_t scounters[SCNT_MAX];
193 uint64_t pcounters[2][2][3];
194 uint64_t bcounters[2][2];
201 char ifname[IFNAMSIZ];
202 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
205 #endif /* _NET_PF_H_ */