The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netgraph/ng_deflate.h

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    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: releng/9.2/sys/netgraph/ng_deflate.h 165581 2006-12-28 15:44:05Z glebius $
   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 

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