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 18 static 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 static struct ctl_table_header *llc2_timeout_header; 50 static struct ctl_table_header *llc_station_header; 51 52 int __init llc_sysctl_init(void) 53 { 54 struct ctl_table empty[1] = {}; 55 llc2_timeout_header = register_net_sysctl(&init_net, "net/llc/llc2/timeout", llc2_timeout_table); 56 llc_station_header = register_net_sysctl_sz(&init_net, "net/llc/station", empty, 0); 57 58 if (!llc2_timeout_header || !llc_station_header) { 59 llc_sysctl_exit(); 60 return -ENOMEM; 61 } 62 return 0; 63 } 64 65 void llc_sysctl_exit(void) 66 { 67 if (llc2_timeout_header) { 68 unregister_net_sysctl_table(llc2_timeout_header); 69 llc2_timeout_header = NULL; 70 } 71 if (llc_station_header) { 72 unregister_net_sysctl_table(llc_station_header); 73 llc_station_header = NULL; 74 } 75 } 76