84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*-
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* ng_tcpmss.h
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*
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2004, Alexey Popov <lollypop@flexuser.ru>
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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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* $FreeBSD$
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*/
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#ifndef _NETGRAPH_TCPMSS_H_
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#define _NETGRAPH_TCPMSS_H_
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/* Node type name and magic cookie */
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#define NG_TCPMSS_NODE_TYPE "tcpmss"
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#define NGM_TCPMSS_COOKIE 1097623478
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/* Statistics structure for one hook. */
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struct ng_tcpmss_hookstat {
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uint64_t Octets;
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uint64_t Packets;
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uint16_t maxMSS;
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uint64_t SYNPkts;
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uint64_t FixedPkts;
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};
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/* Keep this in sync with the above structure definition. */
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#define NG_TCPMSS_HOOKSTAT_INFO { \
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{ "Octets", &ng_parse_uint64_type }, \
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{ "Packets", &ng_parse_uint64_type }, \
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{ "maxMSS", &ng_parse_uint16_type }, \
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{ "SYNPkts", &ng_parse_uint64_type }, \
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{ "FixedPkts", &ng_parse_uint64_type }, \
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{ NULL } \
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}
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/* Structure for NGM_TCPMSS_CONFIG. */
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struct ng_tcpmss_config {
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char inHook[NG_HOOKSIZ];
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char outHook[NG_HOOKSIZ];
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uint16_t maxMSS;
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};
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/* Keep this in sync with the above structure definition. */
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#define NG_TCPMSS_CONFIG_INFO { \
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{ "inHook", &ng_parse_hookbuf_type }, \
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{ "outHook", &ng_parse_hookbuf_type }, \
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{ "maxMSS", &ng_parse_uint16_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_TCPMSS_GET_STATS = 1, /* Get stats. */
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NGM_TCPMSS_CLR_STATS, /* Clear stats. */
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NGM_TCPMSS_GETCLR_STATS, /* "Atomically" get and clear stats. */
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NGM_TCPMSS_CONFIG /* Set configuration. */
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};
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#endif /* _NETGRAPH_TCPMSS_H_ */
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