/*-
* ng_tcpmss.h
*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2004, Alexey Popov <lollypop@flexuser.ru>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _NETGRAPH_TCPMSS_H_
#define _NETGRAPH_TCPMSS_H_
/* Node type name and magic cookie */
#define NG_TCPMSS_NODE_TYPE "tcpmss"
#define NGM_TCPMSS_COOKIE 1097623478
/* Statistics structure for one hook. */
struct ng_tcpmss_hookstat {
uint64_t Octets;
uint64_t Packets;
uint16_t maxMSS;
uint64_t SYNPkts;
uint64_t FixedPkts;
};
/* Keep this in sync with the above structure definition. */
#define NG_TCPMSS_HOOKSTAT_INFO { \
{ "Octets", &ng_parse_uint64_type }, \
{ "Packets", &ng_parse_uint64_type }, \
{ "maxMSS", &ng_parse_uint16_type }, \
{ "SYNPkts", &ng_parse_uint64_type }, \
{ "FixedPkts", &ng_parse_uint64_type }, \
{ NULL } \
}
/* Structure for NGM_TCPMSS_CONFIG. */
struct ng_tcpmss_config {
char inHook[NG_HOOKSIZ];
char outHook[NG_HOOKSIZ];
uint16_t maxMSS;
};
/* Keep this in sync with the above structure definition. */
#define NG_TCPMSS_CONFIG_INFO { \
{ "inHook", &ng_parse_hookbuf_type }, \
{ "outHook", &ng_parse_hookbuf_type }, \
{ "maxMSS", &ng_parse_uint16_type }, \
{ NULL } \
}
/* Netgraph commands */
enum {
NGM_TCPMSS_GET_STATS = 1, /* Get stats. */
NGM_TCPMSS_CLR_STATS, /* Clear stats. */
NGM_TCPMSS_GETCLR_STATS, /* "Atomically" get and clear stats. */
NGM_TCPMSS_CONFIG /* Set configuration. */
};
#endif /* _NETGRAPH_TCPMSS_H_ */
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