10d7ccab88
hooks depending on ethertype. Great for prototyping protocols. connects to the lower and upper hooks of an ethernet type of node. Obtained from: Monzoon Networks. Thanks to Andre Oppermann, May 2001.
93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/*-
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* ng_etf.h
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*
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* Copyright (c) 2001, FreeBSD Incorporated
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Author: Julian Elischer <julian@freebsd.org>
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*
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* $FreeBSD$
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*/
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#ifndef _NETGRAPH_ETHERTYPE_FILTER_H_
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#define _NETGRAPH_ETHERTYPE_FILTER_H_
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/* Node type name. This should be unique among all netgraph node types */
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#define NG_ETF_NODE_TYPE "etf"
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/* Node type cookie. Should also be unique. This value MUST change whenever
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an incompatible change is made to this header file, to insure consistency.
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The de facto method for generating cookies is to take the output of the
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date command: date -u +'%s' */
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#define NGM_ETF_COOKIE 983084516
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/* Hook names */
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#define NG_ETF_HOOK_DOWNSTREAM "downstream"
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#define NG_ETF_HOOK_NOMATCH "nomatch"
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/* Netgraph commands understood by this node type */
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enum {
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NGM_ETF_SET_FLAG = 1,
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NGM_ETF_GET_STATUS,
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NGM_ETF_SET_FILTER,
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};
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/* This structure is returned by the NGM_ETF_GET_STATUS command */
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struct ng_etfstat {
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u_int32_t packets_in; /* packets in from downstream */
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u_int32_t packets_out; /* packets out towards downstream */
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};
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/*
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* This needs to be kept in sync with the above structure definition
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*/
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#define NG_ETF_STATS_TYPE_INFO { \
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{ \
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{ "packets_in", &ng_parse_uint32_type }, \
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{ "packets_out", &ng_parse_uint32_type }, \
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{ NULL }, \
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} \
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}
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/* This structure is returned by the NGM_ETF_GET_STATUS command */
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struct ng_etffilter {
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char matchhook[NG_HOOKLEN + 1]; /* hook name */
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u_int16_t ethertype; /* this ethertype to this hook */
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};
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/*
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* This needs to be kept in sync with the above structure definition
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*/
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#define NG_ETF_FILTER_TYPE_INFO { \
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{ \
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{ "matchhook", &ng_parse_hookbuf_type }, \
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{ "ethertype", &ng_parse_uint16_type }, \
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{ NULL }, \
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} \
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}
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#endif /* _NETGRAPH_ETHERTYPE_FILTER_H_ */
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