4 * Copyright (c) 2004, Alexey Popov <lollypop@flexuser.ru>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #ifndef _NETGRAPH_TCPMSS_H_
33 #define _NETGRAPH_TCPMSS_H_
35 /* Node type name and magic cookie */
36 #define NG_TCPMSS_NODE_TYPE "tcpmss"
37 #define NGM_TCPMSS_COOKIE 1097623478
39 /* Statistics structure for one hook. */
40 struct ng_tcpmss_hookstat {
48 /* Keep this in sync with the above structure definition. */
49 #define NG_TCPMSS_HOOKSTAT_INFO { \
50 { "Octets", &ng_parse_uint64_type }, \
51 { "Packets", &ng_parse_uint64_type }, \
52 { "maxMSS", &ng_parse_uint16_type }, \
53 { "SYNPkts", &ng_parse_uint64_type }, \
54 { "FixedPkts", &ng_parse_uint64_type }, \
59 /* Structure for NGM_TCPMSS_CONFIG. */
60 struct ng_tcpmss_config {
61 char inHook[NG_HOOKSIZ];
62 char outHook[NG_HOOKSIZ];
66 /* Keep this in sync with the above structure definition. */
67 #define NG_TCPMSS_CONFIG_INFO { \
68 { "inHook", &ng_parse_hookbuf_type }, \
69 { "outHook", &ng_parse_hookbuf_type }, \
70 { "maxMSS", &ng_parse_uint16_type }, \
74 /* Netgraph commands */
76 NGM_TCPMSS_GET_STATS = 1, /* Get stats. */
77 NGM_TCPMSS_CLR_STATS, /* Clear stats. */
78 NGM_TCPMSS_GETCLR_STATS, /* "Atomically" get and clear stats. */
79 NGM_TCPMSS_CONFIG /* Set configuration. */
82 #endif /* _NETGRAPH_TCPMSS_H_ */