net/netrom/sysctl_net_netrom.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  * Copyright (C) 1996 Mike Shaver (shaver@zeroknowledge.com)
   5  */
   6 #include <linux/mm.h>
   7 #include <linux/sysctl.h>
   8 #include <linux/init.h>
   9 #include <net/ax25.h>
  10 #include <net/netrom.h>
  11
  12 /*
  13  *      Values taken from NET/ROM documentation.
  14  */
  15 static int min_quality[] = {0}, max_quality[] = {255};
  16 static int min_obs[]     = {0}, max_obs[]     = {255};
  17 static int min_ttl[]     = {0}, max_ttl[]     = {255};
  18 static int min_t1[]      = {5 * HZ};
  19 static int max_t1[]      = {600 * HZ};
  20 static int min_n2[]      = {2}, max_n2[]      = {127};
  21 static int min_t2[]      = {1 * HZ};
  22 static int max_t2[]      = {60 * HZ};
  23 static int min_t4[]      = {1 * HZ};
  24 static int max_t4[]      = {1000 * HZ};
  25 static int min_window[]  = {1}, max_window[]  = {127};
  26 static int min_idle[]    = {0 * HZ};
  27 static int max_idle[]    = {65535 * HZ};
  28 static int min_route[]   = {0}, max_route[]   = {1};
  29 static int min_fails[]   = {1}, max_fails[]   = {10};
  30 static int min_reset[]   = {0}, max_reset[]   = {1};
  31
  32 static struct ctl_table_header *nr_table_header;
  33
  34 static struct ctl_table nr_table[] = {
  35         {
  36                 .procname       = "default_path_quality",
  37                 .data           = &sysctl_netrom_default_path_quality,
  38                 .maxlen         = sizeof(int),
  39                 .mode           = 0644,
  40                 .proc_handler   = proc_dointvec_minmax,
  41                 .extra1         = &min_quality,
  42                 .extra2         = &max_quality
  43         },
  44         {
  45                 .procname       = "obsolescence_count_initialiser",
  46                 .data           = &sysctl_netrom_obsolescence_count_initialiser,
  47                 .maxlen         = sizeof(int),
  48                 .mode           = 0644,
  49                 .proc_handler   = proc_dointvec_minmax,
  50                 .extra1         = &min_obs,
  51                 .extra2         = &max_obs
  52         },
  53         {
  54                 .procname       = "network_ttl_initialiser",
  55                 .data           = &sysctl_netrom_network_ttl_initialiser,
  56                 .maxlen         = sizeof(int),
  57                 .mode           = 0644,
  58                 .proc_handler   = proc_dointvec_minmax,
  59                 .extra1         = &min_ttl,
  60                 .extra2         = &max_ttl
  61         },
  62         {
  63                 .procname       = "transport_timeout",
  64                 .data           = &sysctl_netrom_transport_timeout,
  65                 .maxlen         = sizeof(int),
  66                 .mode           = 0644,
  67                 .proc_handler   = proc_dointvec_minmax,
  68                 .extra1         = &min_t1,
  69                 .extra2         = &max_t1
  70         },
  71         {
  72                 .procname       = "transport_maximum_tries",
  73                 .data           = &sysctl_netrom_transport_maximum_tries,
  74                 .maxlen         = sizeof(int),
  75                 .mode           = 0644,
  76                 .proc_handler   = proc_dointvec_minmax,
  77                 .extra1         = &min_n2,
  78                 .extra2         = &max_n2
  79         },
  80         {
  81                 .procname       = "transport_acknowledge_delay",
  82                 .data           = &sysctl_netrom_transport_acknowledge_delay,
  83                 .maxlen         = sizeof(int),
  84                 .mode           = 0644,
  85                 .proc_handler   = proc_dointvec_minmax,
  86                 .extra1         = &min_t2,
  87                 .extra2         = &max_t2
  88         },
  89         {
  90                 .procname       = "transport_busy_delay",
  91                 .data           = &sysctl_netrom_transport_busy_delay,
  92                 .maxlen         = sizeof(int),
  93                 .mode           = 0644,
  94                 .proc_handler   = proc_dointvec_minmax,
  95                 .extra1         = &min_t4,
  96                 .extra2         = &max_t4
  97         },
  98         {
  99                 .procname       = "transport_requested_window_size",
 100                 .data           = &sysctl_netrom_transport_requested_window_size,
 101                 .maxlen         = sizeof(int),
 102                 .mode           = 0644,
 103                 .proc_handler   = proc_dointvec_minmax,
 104                 .extra1         = &min_window,
 105                 .extra2         = &max_window
 106         },
 107         {
 108                 .procname       = "transport_no_activity_timeout",
 109                 .data           = &sysctl_netrom_transport_no_activity_timeout,
 110                 .maxlen         = sizeof(int),
 111                 .mode           = 0644,
 112                 .proc_handler   = proc_dointvec_minmax,
 113                 .extra1         = &min_idle,
 114                 .extra2         = &max_idle
 115         },
 116         {
 117                 .procname       = "routing_control",
 118                 .data           = &sysctl_netrom_routing_control,
 119                 .maxlen         = sizeof(int),
 120                 .mode           = 0644,
 121                 .proc_handler   = proc_dointvec_minmax,
 122                 .extra1         = &min_route,
 123                 .extra2         = &max_route
 124         },
 125         {
 126                 .procname       = "link_fails_count",
 127                 .data           = &sysctl_netrom_link_fails_count,
 128                 .maxlen         = sizeof(int),
 129                 .mode           = 0644,
 130                 .proc_handler   = proc_dointvec_minmax,
 131                 .extra1         = &min_fails,
 132                 .extra2         = &max_fails
 133         },
 134         {
 135                 .procname       = "reset",
 136                 .data           = &sysctl_netrom_reset_circuit,
 137                 .maxlen         = sizeof(int),
 138                 .mode           = 0644,
 139                 .proc_handler   = proc_dointvec_minmax,
 140                 .extra1         = &min_reset,
 141                 .extra2         = &max_reset
 142         },
 143         { }
 144 };
 145
 146 int __init nr_register_sysctl(void)
 147 {
 148         nr_table_header = register_net_sysctl(&init_net, "net/netrom", nr_table);
 149         if (!nr_table_header)
 150                 return -ENOMEM;
 151         return 0;
 152 }
 153
 154 void nr_unregister_sysctl(void)
 155 {
 156         unregister_net_sysctl_table(nr_table_header);
 157 }