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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/netgraph/ng_deflate.h
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/*-

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 * SPDX-License-Identifier: BSD-2-Clause

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 *

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 * Copyright (c) 2006 Alexander Motin <[email protected]>

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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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#ifndef _NETGRAPH_NG_DEFLATE_H_

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#define _NETGRAPH_NG_DEFLATE_H_

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/* Node type name and magic cookie */

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#define NG_DEFLATE_NODE_TYPE	"deflate"

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#define NGM_DEFLATE_COOKIE	1166642656

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/* Hook names */

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#define NG_DEFLATE_HOOK_COMP	"comp"		/* compression hook */

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#define NG_DEFLATE_HOOK_DECOMP	"decomp"	/* decompression hook */

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/* Config struct */

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struct ng_deflate_config {

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	u_char		enable;			/* node enabled */

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	u_char		windowBits;		/* log2(Window size) */

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};

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/* Keep this in sync with the above structure definition. */

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#define NG_DEFLATE_CONFIG_INFO	{			\

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	{ "enable",	&ng_parse_uint8_type	},	\

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	{ "windowBits",	&ng_parse_uint8_type	},	\

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	{ NULL }					\

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}

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/* Statistics structure for one direction. */

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struct ng_deflate_stats {

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	uint64_t	FramesPlain;

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	uint64_t	FramesComp;

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	uint64_t	FramesUncomp;

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	uint64_t	InOctets;

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	uint64_t	OutOctets;

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	uint64_t	Errors;

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};

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/* Keep this in sync with the above structure definition. */

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#define NG_DEFLATE_STATS_INFO	{				\

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	{ "FramesPlain",&ng_parse_uint64_type	},	\

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	{ "FramesComp",	&ng_parse_uint64_type	},	\

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	{ "FramesUncomp", &ng_parse_uint64_type	},	\

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	{ "InOctets",	&ng_parse_uint64_type	},	\

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	{ "OutOctets",	&ng_parse_uint64_type	},	\

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	{ "Errors",	&ng_parse_uint64_type	},	\

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	{ NULL }					\

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}

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/* Netgraph commands */

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enum {

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	NGM_DEFLATE_CONFIG = 1,

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	NGM_DEFLATE_RESETREQ,			/* sent either way! */

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	NGM_DEFLATE_GET_STATS,

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	NGM_DEFLATE_CLR_STATS,

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	NGM_DEFLATE_GETCLR_STATS,

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};

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#endif /* _NETGRAPH_NG_DEFLATE_H_ */

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