diff options
Diffstat (limited to 'sys/netgraph/ng_tcpmss.h')
| -rw-r--r-- | sys/netgraph/ng_tcpmss.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sys/netgraph/ng_tcpmss.h b/sys/netgraph/ng_tcpmss.h new file mode 100644 index 0000000..4450ac6f --- /dev/null +++ b/sys/netgraph/ng_tcpmss.h @@ -0,0 +1,82 @@ +/*- + * ng_tcpmss.h + * + * 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. + * + * $FreeBSD$ + */ + +#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_ */ |
