d473c9d543
mbuf_tags(9) on packets. Submitted by: Vadim Goncharov <vadimnuclight tpu.ru> mdoc(7) reviewed by: ru
131 lines
4.5 KiB
C
131 lines
4.5 KiB
C
/*-
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* Copyright (c) 2006 Vadim Goncharov <vadimnuclight@tpu.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_NG_TAG_H_
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#define _NETGRAPH_NG_TAG_H_
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/* Node type name and magic cookie. */
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#define NG_TAG_NODE_TYPE "tag"
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#define NGM_TAG_COOKIE 1149771193
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/*
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* The types of tag_cookie, tag_len and tag_id in structures below
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* must be the same as corresponding members m_tag_cookie, m_tag_len
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* and m_tag_id in struct m_tag (defined in <sys/mbuf.h>).
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*/
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/* Tag match structure for every (input) hook. */
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struct ng_tag_hookin {
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char thisHook[NG_HOOKSIZ]; /* name of hook */
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char ifMatch[NG_HOOKSIZ]; /* match dest hook */
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char ifNotMatch[NG_HOOKSIZ]; /* !match dest hook */
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uint8_t strip; /* strip tag if found */
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uint32_t tag_cookie; /* ABI/Module ID */
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uint16_t tag_id; /* tag ID */
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uint16_t tag_len; /* length of data */
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uint8_t tag_data[0]; /* tag data */
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};
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/* Tag set structure for every (output) hook. */
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struct ng_tag_hookout {
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char thisHook[NG_HOOKSIZ]; /* name of hook */
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uint32_t tag_cookie; /* ABI/Module ID */
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uint16_t tag_id; /* tag ID */
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uint16_t tag_len; /* length of data */
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uint8_t tag_data[0]; /* tag data */
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};
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#define NG_TAG_HOOKIN_SIZE(taglen) \
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(sizeof(struct ng_tag_hookin) + (taglen))
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#define NG_TAG_HOOKOUT_SIZE(taglen) \
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(sizeof(struct ng_tag_hookout) + (taglen))
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/* Keep this in sync with the above structures definitions. */
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#define NG_TAG_HOOKIN_TYPE_INFO(tdtype) { \
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{ "thisHook", &ng_parse_hookbuf_type }, \
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{ "ifMatch", &ng_parse_hookbuf_type }, \
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{ "ifNotMatch", &ng_parse_hookbuf_type }, \
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{ "strip", &ng_parse_uint8_type }, \
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{ "tag_cookie", &ng_parse_uint32_type }, \
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{ "tag_id", &ng_parse_uint16_type }, \
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{ "tag_len", &ng_parse_uint16_type }, \
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{ "tag_data", (tdtype) }, \
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{ NULL } \
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}
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#define NG_TAG_HOOKOUT_TYPE_INFO(tdtype) { \
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{ "thisHook", &ng_parse_hookbuf_type }, \
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{ "tag_cookie", &ng_parse_uint32_type }, \
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{ "tag_id", &ng_parse_uint16_type }, \
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{ "tag_len", &ng_parse_uint16_type }, \
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{ "tag_data", (tdtype) }, \
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{ NULL } \
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}
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#ifdef NG_TAG_DEBUG
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/* Statistics structure for one hook. */
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struct ng_tag_hookstat {
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uint64_t recvFrames;
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uint64_t recvOctets;
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uint64_t recvMatchFrames;
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uint64_t recvMatchOctets;
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uint64_t xmitFrames;
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uint64_t xmitOctets;
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};
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/* Keep this in sync with the above structure definition. */
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#define NG_TAG_HOOKSTAT_TYPE_INFO { \
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{ "recvFrames", &ng_parse_uint64_type }, \
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{ "recvOctets", &ng_parse_uint64_type }, \
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{ "recvMatchFrames", &ng_parse_uint64_type }, \
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{ "recvMatchOctets", &ng_parse_uint64_type }, \
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{ "xmitFrames", &ng_parse_uint64_type }, \
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{ "xmitOctets", &ng_parse_uint64_type }, \
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{ NULL } \
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}
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#endif /* NG_TAG_DEBUG */
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/* Netgraph commands. */
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enum {
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NGM_TAG_SET_HOOKIN = 1, /* supply a struct ng_tag_hookin */
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NGM_TAG_GET_HOOKIN, /* returns a struct ng_tag_hookin */
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NGM_TAG_SET_HOOKOUT, /* supply a struct ng_tag_hookout */
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NGM_TAG_GET_HOOKOUT, /* returns a struct ng_tag_hookout */
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#ifdef NG_TAG_DEBUG
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NGM_TAG_GET_STATS, /* supply name as char[NG_HOOKSIZ] */
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NGM_TAG_CLR_STATS, /* supply name as char[NG_HOOKSIZ] */
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NGM_TAG_GETCLR_STATS, /* supply name as char[NG_HOOKSIZ] */
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#endif
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};
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#endif /* _NETGRAPH_NG_TAG_H_ */
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