107 lines
4.0 KiB
C
107 lines
4.0 KiB
C
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/*
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* ng_bpf.h
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*
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* Copyright (c) 1996-1999 Whistle Communications, Inc.
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* All rights reserved.
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*
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* Subject to the following obligations and disclaimer of warranty, use and
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* redistribution of this software, in source or object code forms, with or
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* without modifications are expressly permitted by Whistle Communications;
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* provided, however, that:
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* 1. Any and all reproductions of the source or object code must include the
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* copyright notice above and the following disclaimer of warranties; and
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* 2. No rights are granted, in any manner or form, to use Whistle
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* Communications, Inc. trademarks, including the mark "WHISTLE
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* COMMUNICATIONS" on advertising, endorsements, or otherwise except as
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* such appears in the above copyright notice or in the software.
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*
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* THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
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* REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
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* INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
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* WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANBPF, OR MAKE ANY
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* REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
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* SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
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* IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
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* RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
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* WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* Author: Archie Cobbs <archie@whistle.com>
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*
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* $FreeBSD$
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* $Whistle: ng_bpf.h,v 1.3 1999/12/03 20:30:23 archie Exp $
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*/
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#ifndef _NETGRAPH_BPF_H_
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#define _NETGRAPH_BPF_H_
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/* Node type name and magic cookie */
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#define NG_BPF_NODE_TYPE "bpf"
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#define NGM_BPF_COOKIE 944100792
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/* Program structure for one hook */
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struct ng_bpf_hookprog {
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char thisHook[NG_HOOKLEN+1]; /* name of hook */
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char ifMatch[NG_HOOKLEN+1]; /* match dest hook */
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char ifNotMatch[NG_HOOKLEN+1]; /* !match dest hook */
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int32_t bpf_prog_len; /* #isns in program */
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struct bpf_insn bpf_prog[0]; /* bpf program */
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};
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#define NG_BPF_HOOKPROG_SIZE(numInsn) \
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(sizeof(struct ng_bpf_hookprog) + (numInsn) * sizeof(struct bpf_insn))
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/* Keep this in sync with the above structure definition */
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#define NG_BPF_HOOKPROG_TYPE_INFO(bptype) { \
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{ \
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{ "thisHook", &ng_parse_hookbuf_type }, \
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{ "ifMatch", &ng_parse_hookbuf_type }, \
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{ "ifNotMatch", &ng_parse_hookbuf_type }, \
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{ "bpf_prog_len", &ng_parse_int32_type }, \
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{ "bpf_prog", (bptype) }, \
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{ NULL }, \
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} \
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}
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/* Statistics structure for one hook */
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struct ng_bpf_hookstat {
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u_int64_t recvFrames;
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u_int64_t recvOctets;
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u_int64_t recvMatchFrames;
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u_int64_t recvMatchOctets;
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u_int64_t xmitFrames;
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u_int64_t xmitOctets;
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};
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/* Keep this in sync with the above structure definition */
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#define NG_BPF_HOOKSTAT_TYPE_INFO { \
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{ \
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{ "recvFrames", &ng_parse_int64_type }, \
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{ "recvOctets", &ng_parse_int64_type }, \
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{ "recvMatchFrames", &ng_parse_int64_type }, \
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{ "recvMatchOctets", &ng_parse_int64_type }, \
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{ "xmitFrames", &ng_parse_int64_type }, \
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{ "xmitOctets", &ng_parse_int64_type }, \
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{ NULL }, \
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} \
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}
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/* Netgraph commands */
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enum {
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NGM_BPF_SET_PROGRAM = 1, /* supply a struct ng_bpf_hookprog */
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NGM_BPF_GET_PROGRAM, /* returns a struct ng_bpf_hookprog */
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NGM_BPF_GET_STATS, /* supply name as char[NG_HOOKLEN+1] */
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NGM_BPF_CLR_STATS, /* supply name as char[NG_HOOKLEN+1] */
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NGM_BPF_GETCLR_STATS, /* supply name as char[NG_HOOKLEN+1] */
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};
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#endif /* _NETGRAPH_BPF_H_ */
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