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
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36 * OF SUCH DAMAGE.
37 *
38 * Author: Archie Cobbs <archie@freebsd.org>
39 * $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $
40 */
41
42#ifndef _NETGRAPH_NG_BPF_H_
43#define _NETGRAPH_NG_BPF_H_
44
45/* Node type name and magic cookie */
46#define NG_BPF_NODE_TYPE	"bpf"
47#define NGM_BPF_COOKIE		944100792
48
49/* Program structure for one hook */
50struct ng_bpf_hookprog {
51	char		thisHook[NG_HOOKSIZ];		/* name of hook */
52	char		ifMatch[NG_HOOKSIZ];		/* match dest hook */
53	char		ifNotMatch[NG_HOOKSIZ];		/* !match dest hook */
54	int32_t		bpf_prog_len;			/* #insns in program */
55	struct bpf_insn	bpf_prog[];			/* bpf program */
56};
57
58#define NG_BPF_HOOKPROG_SIZE(numInsn)	\
59	(sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn))
60
61/* Keep this in sync with the above structure definition */
62#define NG_BPF_HOOKPROG_TYPE_INFO(bptype)	{		\
63	  { "thisHook",		&ng_parse_hookbuf_type	},	\
64	  { "ifMatch",		&ng_parse_hookbuf_type	},	\
65	  { "ifNotMatch",	&ng_parse_hookbuf_type	},	\
66	  { "bpf_prog_len",	&ng_parse_int32_type	},	\
67	  { "bpf_prog",		(bptype)		},	\
68	  { NULL }						\
69}
70
71/* Statistics structure for one hook */
72struct ng_bpf_hookstat {
73	u_int64_t	recvFrames;
74	u_int64_t	recvOctets;
75	u_int64_t	recvMatchFrames;
76	u_int64_t	recvMatchOctets;
77	u_int64_t	xmitFrames;
78	u_int64_t	xmitOctets;
79};
80
81/* Keep this in sync with the above structure definition */
82#define NG_BPF_HOOKSTAT_TYPE_INFO	{			\
83	  { "recvFrames",	&ng_parse_uint64_type	},	\
84	  { "recvOctets",	&ng_parse_uint64_type	},	\
85	  { "recvMatchFrames",	&ng_parse_uint64_type	},	\
86	  { "recvMatchOctets",	&ng_parse_uint64_type	},	\
87	  { "xmitFrames",	&ng_parse_uint64_type	},	\
88	  { "xmitOctets",	&ng_parse_uint64_type	},	\
89	  { NULL }						\
90}
91
92/* Netgraph commands */
93enum {
94	NGM_BPF_SET_PROGRAM = 1,	/* supply a struct ng_bpf_hookprog */
95	NGM_BPF_GET_PROGRAM,		/* returns a struct ng_bpf_hookprog */
96	NGM_BPF_GET_STATS,		/* supply name as char[NG_HOOKSIZ] */
97	NGM_BPF_CLR_STATS,		/* supply name as char[NG_HOOKSIZ] */
98	NGM_BPF_GETCLR_STATS,		/* supply name as char[NG_HOOKSIZ] */
99};
100
101#endif /* _NETGRAPH_NG_BPF_H_ */
102