net/tipc/sysctl.c

   1 /*
   2  * net/tipc/sysctl.c: sysctl interface to TIPC subsystem
   3  *
   4  * Copyright (c) 2013, Wind River Systems
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the names of the copyright holders nor the names of its
  16  *    contributors may be used to endorse or promote products derived from
  17  *    this software without specific prior written permission.
  18  *
  19  * Alternatively, this software may be distributed under the terms of the
  20  * GNU General Public License ("GPL") version 2 as published by the Free
  21  * Software Foundation.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #include "core.h"
  37 #include "trace.h"
  38
  39 #include <linux/sysctl.h>
  40
  41 static int zero;
  42 static int one = 1;
  43 static struct ctl_table_header *tipc_ctl_hdr;
  44
  45 static struct ctl_table tipc_table[] = {
  46         {
  47                 .procname       = "tipc_rmem",
  48                 .data           = &sysctl_tipc_rmem,
  49                 .maxlen         = sizeof(sysctl_tipc_rmem),
  50                 .mode           = 0644,
  51                 .proc_handler   = proc_dointvec_minmax,
  52                 .extra1         = &one,
  53         },
  54         {
  55                 .procname       = "named_timeout",
  56                 .data           = &sysctl_tipc_named_timeout,
  57                 .maxlen         = sizeof(sysctl_tipc_named_timeout),
  58                 .mode           = 0644,
  59                 .proc_handler   = proc_dointvec_minmax,
  60                 .extra1         = &zero,
  61         },
  62         {
  63                 .procname       = "sk_filter",
  64                 .data           = &sysctl_tipc_sk_filter,
  65                 .maxlen         = sizeof(sysctl_tipc_sk_filter),
  66                 .mode           = 0644,
  67                 .proc_handler   = proc_doulongvec_minmax,
  68         },
  69         {}
  70 };
  71
  72 int tipc_register_sysctl(void)
  73 {
  74         tipc_ctl_hdr = register_net_sysctl(&init_net, "net/tipc", tipc_table);
  75         if (tipc_ctl_hdr == NULL)
  76                 return -ENOMEM;
  77         return 0;
  78 }
  79
  80 void tipc_unregister_sysctl(void)
  81 {
  82         unregister_net_sysctl_table(tipc_ctl_hdr);
  83 }