net/llc/sysctl_net_llc.c

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