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

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 * Copyright (c) 2015 Dmitry Vagin <[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, this list of conditions and the following 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_CHECKSUM_H_

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#define _NETGRAPH_NG_CHECKSUM_H_

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/* Node type name. */

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#define	NG_CHECKSUM_NODE_TYPE	"checksum"

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/* Node type cookie. */

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#define	NGM_CHECKSUM_COOKIE	439419912

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/* Hook names */

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#define	NG_CHECKSUM_HOOK_IN	"in"

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#define	NG_CHECKSUM_HOOK_OUT	"out"

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/* Checksum flags */

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#define NG_CHECKSUM_CSUM_IPV4	(CSUM_IP|CSUM_TCP|CSUM_UDP)

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#define NG_CHECKSUM_CSUM_IPV6	(CSUM_TCP_IPV6|CSUM_UDP_IPV6)

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/* Netgraph commands understood by this node type */

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enum {

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	NGM_CHECKSUM_GETDLT = 1,

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	NGM_CHECKSUM_SETDLT,

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	NGM_CHECKSUM_GETCONFIG,

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	NGM_CHECKSUM_SETCONFIG,

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	NGM_CHECKSUM_GETCLR_STATS,

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	NGM_CHECKSUM_GET_STATS,

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	NGM_CHECKSUM_CLR_STATS,

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};

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/* Parsing declarations */

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#define	NG_CHECKSUM_CONFIG_TYPE {				\

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	{ "csum_flags",		&ng_parse_uint64_type	},	\

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	{ "csum_offload",	&ng_parse_uint64_type	},	\

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	{ NULL }						\

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}

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#define	NG_CHECKSUM_STATS_TYPE {				\

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	{ "Received",		&ng_parse_uint64_type	},	\

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	{ "Processed",		&ng_parse_uint64_type	},	\

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	{ "Dropped",		&ng_parse_uint64_type	},	\

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	{ NULL }					\

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}

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struct ng_checksum_config {

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	uint64_t	csum_flags;

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	uint64_t	csum_offload;

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};

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struct ng_checksum_stats {

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	uint64_t	received;

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	uint64_t	processed;

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	uint64_t	dropped;

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};

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struct ng_checksum_vlan_header {

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	u_int16_t tag;

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	u_int16_t etype;

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};

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#endif /* _NETGRAPH_NG_CHECKSUM_H_ */

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