linux/net/llc/sysctl_net_llc.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * sysctl_net_llc.c: sysctl interface to LLC net subsystem.
   4 *
   5 * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
   6 */
   7
   8#include <linux/mm.h>
   9#include <linux/init.h>
  10#include <linux/sysctl.h>
  11#include <net/net_namespace.h>
  12#include <net/llc.h>
  13
  14#ifndef CONFIG_SYSCTL
  15#error This file should not be compiled without CONFIG_SYSCTL defined
  16#endif
  17
  18static struct ctl_table llc2_timeout_table[] = {
  19        {
  20                .procname       = "ack",
  21                .data           = &sysctl_llc2_ack_timeout,
  22                .maxlen         = sizeof(sysctl_llc2_ack_timeout),
  23                .mode           = 0644,
  24                .proc_handler   = proc_dointvec_jiffies,
  25        },
  26        {
  27                .procname       = "busy",
  28                .data           = &sysctl_llc2_busy_timeout,
  29                .maxlen         = sizeof(sysctl_llc2_busy_timeout),
  30                .mode           = 0644,
  31                .proc_handler   = proc_dointvec_jiffies,
  32        },
  33        {
  34                .procname       = "p",
  35                .data           = &sysctl_llc2_p_timeout,
  36                .maxlen         = sizeof(sysctl_llc2_p_timeout),
  37                .mode           = 0644,
  38                .proc_handler   = proc_dointvec_jiffies,
  39        },
  40        {
  41                .procname       = "rej",
  42                .data           = &sysctl_llc2_rej_timeout,
  43                .maxlen         = sizeof(sysctl_llc2_rej_timeout),
  44                .mode           = 0644,
  45                .proc_handler   = proc_dointvec_jiffies,
  46        },
  47        { },
  48};
  49
  50static struct ctl_table llc_station_table[] = {
  51        { },
  52};
  53
  54static struct ctl_table_header *llc2_timeout_header;
  55static struct ctl_table_header *llc_station_header;
  56
  57int __init llc_sysctl_init(void)
  58{
  59        llc2_timeout_header = register_net_sysctl(&init_net, "net/llc/llc2/timeout", llc2_timeout_table);
  60        llc_station_header = register_net_sysctl(&init_net, "net/llc/station", llc_station_table);
  61
  62        if (!llc2_timeout_header || !llc_station_header) {
  63                llc_sysctl_exit();
  64                return -ENOMEM;
  65        }
  66        return 0;
  67}
  68
  69void llc_sysctl_exit(void)
  70{
  71        if (llc2_timeout_header) {
  72                unregister_net_sysctl_table(llc2_timeout_header);
  73                llc2_timeout_header = NULL;
  74        }
  75        if (llc_station_header) {
  76                unregister_net_sysctl_table(llc_station_header);
  77                llc_station_header = NULL;
  78        }
  79}
  80