1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/* $OpenBSD: pfvar.h,v 1.17 2001/06/26 19:43:14 dhartmei 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/types.h>
#include <sys/queue.h>
enum { PF_IN=0, PF_OUT=1 };
enum { PF_PASS=0, PF_DROP=1, PF_DROP_RST=2 };
struct pf_rule_addr {
u_int32_t addr;
u_int32_t mask;
u_int16_t port[2];
u_int8_t not;
u_int8_t port_op;
};
struct pf_rule {
char ifname[IFNAMSIZ];
struct ifnet *ifp;
struct pf_rule_addr src;
struct pf_rule_addr dst;
TAILQ_ENTRY(pf_rule) entries;
u_int8_t action;
u_int8_t direction;
u_int8_t log;
u_int8_t quick;
u_int8_t keep_state;
u_int8_t proto;
u_int8_t type;
u_int8_t code;
u_int8_t flags;
u_int8_t flagset;
};
struct pf_state_host {
u_int32_t addr;
u_int16_t port;
};
struct pf_state_peer {
u_int32_t seqlo; /* Max sequence number sent */
u_int32_t seqhi; /* Max the other end ACKd + win */
u_int16_t max_win;
u_int8_t state;
};
struct pf_state {
TAILQ_ENTRY(pf_state) entries;
struct pf_state_host lan;
struct pf_state_host gwy;
struct pf_state_host ext;
struct pf_state_peer src;
struct pf_state_peer dst;
struct pf_rule *rule;
u_int32_t creation;
u_int32_t expire;
u_int32_t packets;
u_int32_t bytes;
u_int8_t proto;
u_int8_t direction;
u_int8_t log;
};
struct pf_nat {
char ifname[IFNAMSIZ];
struct ifnet *ifp;
TAILQ_ENTRY(pf_nat) entries;
u_int32_t saddr;
u_int32_t smask;
u_int32_t daddr;
u_int8_t proto;
u_int8_t not;
};
struct pf_rdr {
char ifname[IFNAMSIZ];
struct ifnet *ifp;
TAILQ_ENTRY(pf_rdr) entries;
u_int32_t daddr;
u_int32_t dmask;
u_int32_t raddr;
u_int16_t dport;
u_int16_t rport;
u_int8_t proto;
u_int8_t not;
};
struct pf_status {
u_int32_t running;
u_int32_t bytes[2];
u_int32_t packets[2][2];
u_int32_t states;
u_int32_t state_inserts;
u_int32_t state_removals;
u_int32_t state_searches;
u_int32_t since;
};
/*
* ioctl parameter structures
*/
struct pfioc_rule {
u_int32_t ticket;
u_int32_t nr;
struct pf_rule rule;
};
struct pfioc_nat {
u_int32_t ticket;
u_int32_t nr;
struct pf_nat nat;
};
struct pfioc_rdr {
u_int32_t ticket;
u_int32_t nr;
struct pf_rdr rdr;
};
struct pfioc_state {
u_int32_t nr;
struct pf_state state;
};
struct pfioc_if {
char ifname[IFNAMSIZ];
};
/*
* ioctl operations
*/
#define DIOCSTART _IO ('D', 1)
#define DIOCSTOP _IO ('D', 2)
#define DIOCBEGINRULES _IOWR('D', 3, u_int32_t)
#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
#define DIOCCOMMITRULES _IOWR('D', 5, u_int32_t)
#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
#define DIOCBEGINNATS _IOWR('D', 8, u_int32_t)
#define DIOCADDNAT _IOWR('D', 9, struct pfioc_nat)
#define DIOCCOMMITNATS _IOWR('D', 10, u_int32_t)
#define DIOCGETNATS _IOWR('D', 11, struct pfioc_nat)
#define DIOCGETNAT _IOWR('D', 12, struct pfioc_nat)
#define DIOCBEGINRDRS _IOWR('D', 13, u_int32_t)
#define DIOCADDRDR _IOWR('D', 14, struct pfioc_rdr)
#define DIOCCOMMITRDRS _IOWR('D', 15, u_int32_t)
#define DIOCGETRDRS _IOWR('D', 16, struct pfioc_rdr)
#define DIOCGETRDR _IOWR('D', 17, struct pfioc_rdr)
#define DIOCCLRSTATES _IO ('D', 18)
#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
/* 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 */
#ifdef _KERNEL
int pf_test(int, struct ifnet *, struct mbuf *);
#endif /* _KERNEL */
#endif /* _NET_PFVAR_H_ */
|
