sys/netgraph/ng_deflate.h

   1 /*-
   2  * Copyright (c) 2006 Alexander Motin <mav@alkar.net>
   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  * $FreeBSD$
  28  */
  29
  30 #ifndef _NETGRAPH_NG_DEFLATE_H_
  31 #define _NETGRAPH_NG_DEFLATE_H_
  32
  33 /* Node type name and magic cookie */
  34 #define NG_DEFLATE_NODE_TYPE    "deflate"
  35 #define NGM_DEFLATE_COOKIE      1166642656
  36
  37 /* Hook names */
  38 #define NG_DEFLATE_HOOK_COMP    "comp"          /* compression hook */
  39 #define NG_DEFLATE_HOOK_DECOMP  "decomp"        /* decompression hook */
  40
  41 /* Config struct */
  42 struct ng_deflate_config {
  43         u_char          enable;                 /* node enabled */
  44         u_char          windowBits;             /* log2(Window size) */
  45 };
  46
  47 /* Keep this in sync with the above structure definition. */
  48 #define NG_DEFLATE_CONFIG_INFO  {                       \
  49         { "enable",     &ng_parse_uint8_type    },      \
  50         { "windowBits", &ng_parse_uint8_type    },      \
  51         { NULL }                                        \
  52 }
  53
  54 /* Statistics structure for one direction. */
  55 struct ng_deflate_stats {
  56         uint64_t        FramesPlain;
  57         uint64_t        FramesComp;
  58         uint64_t        FramesUncomp;
  59         uint64_t        InOctets;
  60         uint64_t        OutOctets;
  61         uint64_t        Errors;
  62 };
  63
  64 /* Keep this in sync with the above structure definition. */
  65 #define NG_DEFLATE_STATS_INFO   {                               \
  66         { "FramesPlain",&ng_parse_uint64_type   },      \
  67         { "FramesComp", &ng_parse_uint64_type   },      \
  68         { "FramesUncomp", &ng_parse_uint64_type },      \
  69         { "InOctets",   &ng_parse_uint64_type   },      \
  70         { "OutOctets",  &ng_parse_uint64_type   },      \
  71         { "Errors",     &ng_parse_uint64_type   },      \
  72         { NULL }                                        \
  73 }
  74
  75 /* Netgraph commands */
  76 enum {
  77         NGM_DEFLATE_CONFIG = 1,
  78         NGM_DEFLATE_RESETREQ,                   /* sent either way! */
  79         NGM_DEFLATE_GET_STATS,
  80         NGM_DEFLATE_CLR_STATS,
  81         NGM_DEFLATE_GETCLR_STATS,
  82 };
  83
  84 #endif /* _NETGRAPH_NG_DEFLATE_H_ */
  85