- Release bridge interface's serializer when configuring member interface
[dragonfly.git] / usr.sbin / ppp / filter.h
blob9490c89d14bbeae93fd17fcd22bbb6ce5a5e24e4
1 /*-
2 * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org>
3 * based on work by Toshiharu OHNO <tony-o@iij.ad.jp>
4 * Internet Initiative Japan, Inc (IIJ)
5 * All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
28 * $FreeBSD: src/usr.sbin/ppp/filter.h,v 1.21.2.6 2002/09/01 02:12:27 brian Exp $
29 * $DragonFly: src/usr.sbin/ppp/filter.h,v 1.2 2003/06/17 04:30:00 dillon Exp $
32 /* Operations - f_srcop, f_dstop */
33 #define OP_NONE 0
34 #define OP_EQ 1
35 #define OP_GT 2
36 #define OP_LT 3
38 /* srctype or dsttype */
39 #define T_ADDR 0
40 #define T_MYADDR 1
41 #define T_MYADDR6 2
42 #define T_HISADDR 3
43 #define T_HISADDR6 4
44 #define T_DNS0 5
45 #define T_DNS1 6
48 * There's a struct filterent for each possible filter rule. The
49 * layout is designed to minimise size (there are 4 * MAXFILTERS of
50 * them) - which is also conveniently a power of 2 (32 bytes) on
51 * architectures where sizeof(int)==4 (this makes indexing faster).
53 * Note that there are four free bits in the initial word for future
54 * extensions.
56 struct filterent {
57 int f_proto; /* Protocol: getprotoby*() */
58 unsigned f_action : 8; /* Filtering action: goto or A_... */
59 unsigned f_srcop : 2; /* Source port operation: OP_... */
60 unsigned f_dstop : 2; /* Destination port operation: OP_... */
61 unsigned f_srctype : 3; /* T_ value of src */
62 unsigned f_dsttype : 3; /* T_ value of dst */
63 unsigned f_estab : 1; /* Check TCP ACK bit */
64 unsigned f_syn : 1; /* Check TCP SYN bit */
65 unsigned f_finrst : 1; /* Check TCP FIN/RST bits */
66 unsigned f_invert : 1; /* true to complement match */
67 struct ncprange f_src; /* Source address and mask */
68 struct ncprange f_dst; /* Destination address and mask */
69 u_short f_srcport; /* Source port, compared with f_srcop */
70 u_short f_dstport; /* Destination port, compared with f_dstop */
71 unsigned timeout; /* Keep alive value for passed packet */
74 #define MAXFILTERS 40 /* in each filter set */
76 /* f_action values [0..MAXFILTERS) specify the next filter rule, others are: */
77 #define A_NONE (MAXFILTERS)
78 #define A_PERMIT (A_NONE+1)
79 #define A_DENY (A_PERMIT+1)
81 struct filter {
82 struct filterent rule[MAXFILTERS]; /* incoming packet filter */
83 const char *name;
84 unsigned fragok : 1;
85 unsigned logok : 1;
88 /* Which filter set */
89 #define FL_IN 0
90 #define FL_OUT 1
91 #define FL_DIAL 2
92 #define FL_KEEP 3
94 struct ipcp;
95 struct cmdargs;
97 extern int filter_Show(struct cmdargs const *);
98 extern int filter_Set(struct cmdargs const *);
99 extern const char * filter_Action2Nam(int);
100 extern const char *filter_Op2Nam(int);
101 extern void filter_AdjustAddr(struct filter *, struct ncpaddr *,
102 struct ncpaddr *, struct in_addr *);