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/*
* ng_bpf.h
*
* Copyright (c) 1996-1999 Whistle Communications, Inc.
* All rights reserved.
*
* Subject to the following obligations and disclaimer of warranty, use and
* redistribution of this software, in source or object code forms, with or
* without modifications are expressly permitted by Whistle Communications;
* provided, however, that:
* 1. Any and all reproductions of the source or object code must include the
* copyright notice above and the following disclaimer of warranties; and
* 2. No rights are granted, in any manner or form, to use Whistle
* Communications, Inc. trademarks, including the mark "WHISTLE
* COMMUNICATIONS" on advertising, endorsements, or otherwise except as
* such appears in the above copyright notice or in the software.
*
* THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
* INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
* WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANBPF, OR MAKE ANY
* REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
* SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
* IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
* RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
* WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* Author: Archie Cobbs <archie@whistle.com>
*
* $FreeBSD$
* $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $
*/
#ifndef _NETGRAPH_BPF_H_
#define _NETGRAPH_BPF_H_
/* Node type name and magic cookie */
#define NG_BPF_NODE_TYPE "bpf"
#define NGM_BPF_COOKIE 944100792
/* Program structure for one hook */
struct ng_bpf_hookprog {
char thisHook[NG_HOOKLEN+1]; /* name of hook */
char ifMatch[NG_HOOKLEN+1]; /* match dest hook */
char ifNotMatch[NG_HOOKLEN+1]; /* !match dest hook */
int32_t bpf_prog_len; /* #isns in program */
struct bpf_insn bpf_prog[0]; /* bpf program */
};
#define NG_BPF_HOOKPROG_SIZE(numInsn) \
(sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn))
/* Keep this in sync with the above structure definition */
#define NG_BPF_HOOKPROG_TYPE_INFO(bptype) { \
{ \
{ "thisHook", &ng_parse_hookbuf_type }, \
{ "ifMatch", &ng_parse_hookbuf_type }, \
{ "ifNotMatch", &ng_parse_hookbuf_type }, \
{ "bpf_prog_len", &ng_parse_int32_type }, \
{ "bpf_prog", (bptype) }, \
{ NULL }, \
} \
}
/* Statistics structure for one hook */
struct ng_bpf_hookstat {
u_int64_t recvFrames;
u_int64_t recvOctets;
u_int64_t recvMatchFrames;
u_int64_t recvMatchOctets;
u_int64_t xmitFrames;
u_int64_t xmitOctets;
};
/* Keep this in sync with the above structure definition */
#define NG_BPF_HOOKSTAT_TYPE_INFO { \
{ \
{ "recvFrames", &ng_parse_uint64_type }, \
{ "recvOctets", &ng_parse_uint64_type }, \
{ "recvMatchFrames", &ng_parse_uint64_type }, \
{ "recvMatchOctets", &ng_parse_uint64_type }, \
{ "xmitFrames", &ng_parse_uint64_type }, \
{ "xmitOctets", &ng_parse_uint64_type }, \
{ NULL }, \
} \
}
/* Netgraph commands */
enum {
NGM_BPF_SET_PROGRAM = 1, /* supply a struct ng_bpf_hookprog */
NGM_BPF_GET_PROGRAM, /* returns a struct ng_bpf_hookprog */
NGM_BPF_GET_STATS, /* supply name as char[NG_HOOKLEN+1] */
NGM_BPF_CLR_STATS, /* supply name as char[NG_HOOKLEN+1] */
NGM_BPF_GETCLR_STATS, /* supply name as char[NG_HOOKLEN+1] */
};
#endif /* _NETGRAPH_BPF_H_ */
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