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 } 158