ng_tag.h

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    1 /*-
    2  * Copyright (c) 2006 Vadim Goncharov <vadimnuclight@tpu.ru>
    3  * All rights reserved.
    4  * 
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice unmodified, this list of conditions, and the following
   10  *    disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD: src/sys/netgraph/ng_tag.h,v 1.1 2006/06/27 12:45:28 glebius Exp $
   28  * $DragonFly: src/sys/netgraph7/ng_tag.h,v 1.2 2008/06/26 23:05:35 dillon Exp $
   29  */
   30 
   31 #ifndef _NETGRAPH_NG_TAG_H_
   32 #define _NETGRAPH_NG_TAG_H_
   33 
   34 /* Node type name and magic cookie. */
   35 #define NG_TAG_NODE_TYPE        "tag"
   36 #define NGM_TAG_COOKIE          1149771193
   37 
   38 /*
   39  * The types of tag_cookie, tag_len and tag_id in structures below
   40  * must be the same as corresponding members m_tag_cookie, m_tag_len
   41  * and m_tag_id in struct m_tag (defined in <sys/mbuf.h>).
   42  */
   43 
   44 /* Tag match structure for every (input) hook. */
   45 struct ng_tag_hookin {
   46         char            thisHook[NG_HOOKSIZ];           /* name of hook */
   47         char            ifMatch[NG_HOOKSIZ];            /* match dest hook */
   48         char            ifNotMatch[NG_HOOKSIZ];         /* !match dest hook */
   49         uint8_t         strip;                          /* strip tag if found */
   50         uint32_t        tag_cookie;                     /* ABI/Module ID */
   51         uint16_t        tag_id;                         /* tag ID */
   52         uint16_t        tag_len;                        /* length of data */
   53         uint8_t         tag_data[0];                    /* tag data */
   54 };
   55 
   56 /* Tag set structure for every (output) hook. */
   57 struct ng_tag_hookout {
   58         char            thisHook[NG_HOOKSIZ];           /* name of hook */
   59         uint32_t        tag_cookie;                     /* ABI/Module ID */
   60         uint16_t        tag_id;                         /* tag ID */
   61         uint16_t        tag_len;                        /* length of data */
   62         uint8_t         tag_data[0];                    /* tag data */
   63 };
   64 
   65 #define NG_TAG_HOOKIN_SIZE(taglen)      \
   66         (sizeof(struct ng_tag_hookin) + (taglen))
   67 
   68 #define NG_TAG_HOOKOUT_SIZE(taglen)     \
   69         (sizeof(struct ng_tag_hookout) + (taglen))
   70 
   71 /* Keep this in sync with the above structures definitions. */
   72 #define NG_TAG_HOOKIN_TYPE_INFO(tdtype) {               \
   73           { "thisHook",         &ng_parse_hookbuf_type  },      \
   74           { "ifMatch",          &ng_parse_hookbuf_type  },      \
   75           { "ifNotMatch",       &ng_parse_hookbuf_type  },      \
   76           { "strip",            &ng_parse_uint8_type    },      \
   77           { "tag_cookie",       &ng_parse_uint32_type   },      \
   78           { "tag_id",           &ng_parse_uint16_type   },      \
   79           { "tag_len",          &ng_parse_uint16_type   },      \
   80           { "tag_data",         (tdtype)                },      \
   81           { NULL }                                              \
   82 }
   83 
   84 #define NG_TAG_HOOKOUT_TYPE_INFO(tdtype)        {               \
   85           { "thisHook",         &ng_parse_hookbuf_type  },      \
   86           { "tag_cookie",       &ng_parse_uint32_type   },      \
   87           { "tag_id",           &ng_parse_uint16_type   },      \
   88           { "tag_len",          &ng_parse_uint16_type   },      \
   89           { "tag_data",         (tdtype)                },      \
   90           { NULL }                                              \
   91 }
   92 
   93 #ifdef NG_TAG_DEBUG
   94 
   95 /* Statistics structure for one hook. */
   96 struct ng_tag_hookstat {
   97         uint64_t        recvFrames;
   98         uint64_t        recvOctets;
   99         uint64_t        recvMatchFrames;
  100         uint64_t        recvMatchOctets;
  101         uint64_t        xmitFrames;
  102         uint64_t        xmitOctets;
  103 };
  104 
  105 /* Keep this in sync with the above structure definition. */
  106 #define NG_TAG_HOOKSTAT_TYPE_INFO       {                       \
  107           { "recvFrames",       &ng_parse_uint64_type   },      \
  108           { "recvOctets",       &ng_parse_uint64_type   },      \
  109           { "recvMatchFrames",  &ng_parse_uint64_type   },      \
  110           { "recvMatchOctets",  &ng_parse_uint64_type   },      \
  111           { "xmitFrames",       &ng_parse_uint64_type   },      \
  112           { "xmitOctets",       &ng_parse_uint64_type   },      \
  113           { NULL }                                              \
  114 }
  115 
  116 #endif /* NG_TAG_DEBUG */
  117 
  118 /* Netgraph commands. */
  119 enum {
  120         NGM_TAG_SET_HOOKIN = 1,         /* supply a struct ng_tag_hookin */
  121         NGM_TAG_GET_HOOKIN,             /* returns a struct ng_tag_hookin */
  122         NGM_TAG_SET_HOOKOUT,            /* supply a struct ng_tag_hookout */
  123         NGM_TAG_GET_HOOKOUT,            /* returns a struct ng_tag_hookout */
  124 #ifdef NG_TAG_DEBUG
  125         NGM_TAG_GET_STATS,              /* supply name as char[NG_HOOKSIZ] */
  126         NGM_TAG_CLR_STATS,              /* supply name as char[NG_HOOKSIZ] */
  127         NGM_TAG_GETCLR_STATS,           /* supply name as char[NG_HOOKSIZ] */
  128 #endif
  129 };
  130 
  131 #endif /* _NETGRAPH_NG_TAG_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/netgraph7/ng_tag.h

FreeBSD/Linux Kernel Cross Reference
sys/netgraph7/ng_tag.h