FreeBSD/Linux Kernel Cross Reference
sys/netgraph/ng_bpf.h
1
2 /*
3 * ng_bpf.h
4 *
5 * Copyright (c) 1996-1999 Whistle Communications, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and
9 * redistribution of this software, in source or object code forms, with or
10 * without modifications are expressly permitted by Whistle Communications;
11 * provided, however, that:
12 * 1. Any and all reproductions of the source or object code must include the
13 * copyright notice above and the following disclaimer of warranties; and
14 * 2. No rights are granted, in any manner or form, to use Whistle
15 * Communications, Inc. trademarks, including the mark "WHISTLE
16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17 * such appears in the above copyright notice or in the software.
18 *
19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANBPF, OR MAKE ANY
25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 *
37 * Author: Archie Cobbs <archie@freebsd.org>
38 *
39 * $FreeBSD$
40 * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $
41 */
42
43 #ifndef _NETGRAPH_BPF_H_
44 #define _NETGRAPH_BPF_H_
45
46 /* Node type name and magic cookie */
47 #define NG_BPF_NODE_TYPE "bpf"
48 #define NGM_BPF_COOKIE 944100792
49
50 /* Program structure for one hook */
51 struct ng_bpf_hookprog {
52 char thisHook[NG_HOOKLEN+1]; /* name of hook */
53 char ifMatch[NG_HOOKLEN+1]; /* match dest hook */
54 char ifNotMatch[NG_HOOKLEN+1]; /* !match dest hook */
55 int32_t bpf_prog_len; /* #isns in program */
56 struct bpf_insn bpf_prog[0]; /* bpf program */
57 };
58
59 #define NG_BPF_HOOKPROG_SIZE(numInsn) \
60 (sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn))
61
62 /* Keep this in sync with the above structure definition */
63 #define NG_BPF_HOOKPROG_TYPE_INFO(bptype) { \
64 { "thisHook", &ng_parse_hookbuf_type }, \
65 { "ifMatch", &ng_parse_hookbuf_type }, \
66 { "ifNotMatch", &ng_parse_hookbuf_type }, \
67 { "bpf_prog_len", &ng_parse_int32_type }, \
68 { "bpf_prog", (bptype) }, \
69 { NULL } \
70 }
71
72 /* Statistics structure for one hook */
73 struct ng_bpf_hookstat {
74 u_int64_t recvFrames;
75 u_int64_t recvOctets;
76 u_int64_t recvMatchFrames;
77 u_int64_t recvMatchOctets;
78 u_int64_t xmitFrames;
79 u_int64_t xmitOctets;
80 };
81
82 /* Keep this in sync with the above structure definition */
83 #define NG_BPF_HOOKSTAT_TYPE_INFO { \
84 { "recvFrames", &ng_parse_uint64_type }, \
85 { "recvOctets", &ng_parse_uint64_type }, \
86 { "recvMatchFrames", &ng_parse_uint64_type }, \
87 { "recvMatchOctets", &ng_parse_uint64_type }, \
88 { "xmitFrames", &ng_parse_uint64_type }, \
89 { "xmitOctets", &ng_parse_uint64_type }, \
90 { NULL } \
91 }
92
93 /* Netgraph commands */
94 enum {
95 NGM_BPF_SET_PROGRAM = 1, /* supply a struct ng_bpf_hookprog */
96 NGM_BPF_GET_PROGRAM, /* returns a struct ng_bpf_hookprog */
97 NGM_BPF_GET_STATS, /* supply name as char[NG_HOOKLEN+1] */
98 NGM_BPF_CLR_STATS, /* supply name as char[NG_HOOKLEN+1] */
99 NGM_BPF_GETCLR_STATS, /* supply name as char[NG_HOOKLEN+1] */
100 };
101
102 #endif /* _NETGRAPH_BPF_H_ */
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