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_pipe.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2004-2008 University of Zagreb
    5  * Copyright (c) 2007-2008 FreeBSD Foundation
    6  *
    7  * This software was developed by the University of Zagreb and the
    8  * FreeBSD Foundation under sponsorship by the Stichting NLnet and the
    9  * FreeBSD Foundation.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  * $FreeBSD: head/sys/netgraph/ng_pipe.h 326272 2017-11-27 15:23:17Z pfg $
   33  */
   34 
   35 #ifndef _NETGRAPH_PIPE_H_
   36 #define _NETGRAPH_PIPE_H_
   37 
   38 /* Node type name and magic cookie */
   39 #define NG_PIPE_NODE_TYPE       "pipe"
   40 #define NGM_PIPE_COOKIE         200708191
   41 
   42 /* Hook names */
   43 #define NG_PIPE_HOOK_UPPER      "upper"
   44 #define NG_PIPE_HOOK_LOWER      "lower"
   45 
   46 #define MAX_FSIZE 16384 /* Largest supported frame size, in bytes, for BER */
   47 #define MAX_OHSIZE 256  /* Largest supported dummy-framing size, in bytes */
   48 
   49 /* Statistics structure for one hook */
   50 struct ng_pipe_hookstat {
   51         u_int64_t               fwd_octets;
   52         u_int64_t               fwd_frames;
   53         u_int64_t               in_disc_octets;
   54         u_int64_t               in_disc_frames;
   55         u_int64_t               out_disc_octets;
   56         u_int64_t               out_disc_frames;
   57 };
   58 
   59 /* Keep this in sync with the above structure definition */
   60 #define NG_PIPE_HOOKSTAT_INFO   {                                       \
   61         { "FwdOctets",          &ng_parse_uint64_type   },              \
   62         { "FwdFrames",          &ng_parse_uint64_type   },              \
   63         { "queueDropOctets",    &ng_parse_uint64_type   },              \
   64         { "queueDropFrames",    &ng_parse_uint64_type   },              \
   65         { "delayDropOctets",    &ng_parse_uint64_type   },              \
   66         { "delayDropFrames",    &ng_parse_uint64_type   },              \
   67         { NULL },                                                       \
   68 }
   69 
   70 /* Statistics structure returned by NGM_PIPE_GET_STATS */
   71 struct ng_pipe_stats {
   72         struct ng_pipe_hookstat downstream;
   73         struct ng_pipe_hookstat upstream;
   74 };
   75 
   76 /* Keep this in sync with the above structure definition */
   77 #define NG_PIPE_STATS_INFO(hstype)      {                               \
   78         { "downstream",         (hstype) },                             \
   79         { "upstream",           (hstype) },                             \
   80         { NULL },                                                       \
   81 }
   82 
   83 /* Runtime structure for one hook */
   84 struct ng_pipe_hookrun {
   85         u_int32_t               fifo_queues;
   86         u_int32_t               qin_octets;
   87         u_int32_t               qin_frames;
   88         u_int32_t               qout_octets;
   89         u_int32_t               qout_frames;
   90 };
   91 
   92 /* Keep this in sync with the above structure definition */
   93 #define NG_PIPE_HOOKRUN_INFO    {                                       \
   94         { "queues",             &ng_parse_uint32_type   },              \
   95         { "queuedOctets",       &ng_parse_uint32_type   },              \
   96         { "queuedFrames",       &ng_parse_uint32_type   },              \
   97         { "delayedOctets",      &ng_parse_uint32_type   },              \
   98         { "delayedFrames",      &ng_parse_uint32_type   },              \
   99         { NULL },                                                       \
  100 }
  101 
  102 /* Runtime structure returned by NGM_PIPE_GET_RUN */
  103 struct ng_pipe_run {
  104         struct ng_pipe_hookrun  downstream;
  105         struct ng_pipe_hookrun  upstream;
  106 };
  107 
  108 /* Keep this in sync with the above structure definition */
  109 #define NG_PIPE_RUN_INFO(hstype)        {                               \
  110         { "downstream",         (hstype) },                             \
  111         { "upstream",           (hstype) },                             \
  112         { NULL },                                                       \
  113 }
  114 
  115 /* Config structure for one hook */
  116 struct ng_pipe_hookcfg {
  117         u_int64_t               bandwidth;
  118         u_int64_t               ber;
  119         u_int32_t               qin_size_limit;
  120         u_int32_t               qout_size_limit;
  121         u_int32_t               duplicate;
  122         u_int32_t               fifo;
  123         u_int32_t               drr;
  124         u_int32_t               wfq;
  125         u_int32_t               droptail;
  126         u_int32_t               drophead;
  127 };
  128 
  129 /* Keep this in sync with the above structure definition */
  130 #define NG_PIPE_HOOKCFG_INFO    {                                       \
  131         { "bandwidth",          &ng_parse_uint64_type   },              \
  132         { "BER",                &ng_parse_uint64_type   },              \
  133         { "queuelen",           &ng_parse_uint32_type   },              \
  134         { "delaylen",           &ng_parse_uint32_type   },              \
  135         { "duplicate",          &ng_parse_uint32_type   },              \
  136         { "fifo",               &ng_parse_uint32_type   },              \
  137         { "drr",                &ng_parse_uint32_type   },              \
  138         { "wfq",                &ng_parse_uint32_type   },              \
  139         { "droptail",           &ng_parse_uint32_type   },              \
  140         { "drophead",           &ng_parse_uint32_type   },              \
  141         { NULL },                                                       \
  142 }
  143 
  144 /* Config structure returned by NGM_PIPE_GET_CFG */
  145 struct ng_pipe_cfg {
  146         u_int64_t               bandwidth;
  147         u_int64_t               delay;
  148         u_int32_t               header_offset;
  149         u_int32_t               overhead;
  150         struct ng_pipe_hookcfg  downstream;
  151         struct ng_pipe_hookcfg  upstream;
  152 };
  153 
  154 /* Keep this in sync with the above structure definition */
  155 #define NG_PIPE_CFG_INFO(hstype)        {                               \
  156         { "bandwidth",          &ng_parse_uint64_type   },              \
  157         { "delay",              &ng_parse_uint64_type   },              \
  158         { "header_offset",      &ng_parse_uint32_type   },              \
  159         { "overhead",           &ng_parse_uint32_type   },              \
  160         { "downstream",         (hstype)                },              \
  161         { "upstream",           (hstype)                },              \
  162         { NULL },                                                       \
  163 }
  164 
  165 /* Netgraph commands */
  166 enum {
  167         NGM_PIPE_GET_STATS=1,           /* get stats */
  168         NGM_PIPE_CLR_STATS,             /* clear stats */
  169         NGM_PIPE_GETCLR_STATS,          /* atomically get and clear stats */
  170         NGM_PIPE_GET_RUN,               /* get current runtime status */
  171         NGM_PIPE_GET_CFG,               /* get configurable parameters */
  172         NGM_PIPE_SET_CFG,               /* set configurable parameters */
  173 };
  174 
  175 #endif /* _NETGRAPH_PIPE_H_ */

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