FreeBSD/Linux Kernel Cross Reference
sys/netgraph/ng_bpf.h
1 /*
2 * ng_bpf.h
3 */
4
5 /*-
6 * Copyright (c) 1996-1999 Whistle Communications, Inc.
7 * All rights reserved.
8 *
9 * Subject to the following obligations and disclaimer of warranty, use and
10 * redistribution of this software, in source or object code forms, with or
11 * without modifications are expressly permitted by Whistle Communications;
12 * provided, however, that:
13 * 1. Any and all reproductions of the source or object code must include the
14 * copyright notice above and the following disclaimer of warranties; and
15 * 2. No rights are granted, in any manner or form, to use Whistle
16 * Communications, Inc. trademarks, including the mark "WHISTLE
17 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as
18 * such appears in the above copyright notice or in the software.
19 *
20 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
21 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
22 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
23 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
25 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
26 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
27 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
28 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
29 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
30 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
31 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
32 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
35 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
36 * OF SUCH DAMAGE.
37 *
38 * Author: Archie Cobbs <archie@freebsd.org>
39 *
40 * $FreeBSD: src/sys/netgraph/ng_bpf.h,v 1.11 2005/02/12 18:10:26 ru Exp $
41 * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $
42 */
43
44 #ifndef _NETGRAPH_NG_BPF_H_
45 #define _NETGRAPH_NG_BPF_H_
46
47 /* Node type name and magic cookie */
48 #define NG_BPF_NODE_TYPE "bpf"
49 #define NGM_BPF_COOKIE 944100792
50
51 /* Program structure for one hook */
52 struct ng_bpf_hookprog {
53 char thisHook[NG_HOOKSIZ]; /* name of hook */
54 char ifMatch[NG_HOOKSIZ]; /* match dest hook */
55 char ifNotMatch[NG_HOOKSIZ]; /* !match dest hook */
56 int32_t bpf_prog_len; /* #insns in program */
57 struct bpf_insn bpf_prog[]; /* bpf program */
58 };
59
60 #define NG_BPF_HOOKPROG_SIZE(numInsn) \
61 (sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn))
62
63 /* Keep this in sync with the above structure definition */
64 #define NG_BPF_HOOKPROG_TYPE_INFO(bptype) { \
65 { "thisHook", &ng_parse_hookbuf_type }, \
66 { "ifMatch", &ng_parse_hookbuf_type }, \
67 { "ifNotMatch", &ng_parse_hookbuf_type }, \
68 { "bpf_prog_len", &ng_parse_int32_type }, \
69 { "bpf_prog", (bptype) }, \
70 { NULL } \
71 }
72
73 /* Statistics structure for one hook */
74 struct ng_bpf_hookstat {
75 u_int64_t recvFrames;
76 u_int64_t recvOctets;
77 u_int64_t recvMatchFrames;
78 u_int64_t recvMatchOctets;
79 u_int64_t xmitFrames;
80 u_int64_t xmitOctets;
81 };
82
83 /* Keep this in sync with the above structure definition */
84 #define NG_BPF_HOOKSTAT_TYPE_INFO { \
85 { "recvFrames", &ng_parse_uint64_type }, \
86 { "recvOctets", &ng_parse_uint64_type }, \
87 { "recvMatchFrames", &ng_parse_uint64_type }, \
88 { "recvMatchOctets", &ng_parse_uint64_type }, \
89 { "xmitFrames", &ng_parse_uint64_type }, \
90 { "xmitOctets", &ng_parse_uint64_type }, \
91 { NULL } \
92 }
93
94 /* Netgraph commands */
95 enum {
96 NGM_BPF_SET_PROGRAM = 1, /* supply a struct ng_bpf_hookprog */
97 NGM_BPF_GET_PROGRAM, /* returns a struct ng_bpf_hookprog */
98 NGM_BPF_GET_STATS, /* supply name as char[NG_HOOKSIZ] */
99 NGM_BPF_CLR_STATS, /* supply name as char[NG_HOOKSIZ] */
100 NGM_BPF_GETCLR_STATS, /* supply name as char[NG_HOOKSIZ] */
101 };
102
103 #endif /* _NETGRAPH_NG_BPF_H_ */
104
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