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Linux kernel mirror (for testing)
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linux
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
49static struct ctl_table_header *llc2_timeout_header;
50static struct ctl_table_header *llc_station_header;
51
52int __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
65void 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}