2 * sysctl_net_core.c: sysctl interface to net core subsystem.
4 * Begun April 1, 1996, Mike Shaver.
5 * Added /proc/sys/net/core directory entry (empty =) ). [MS]
9 #include <linux/sysctl.h>
10 #include <linux/module.h>
11 #include <linux/socket.h>
12 #include <linux/netdevice.h>
13 #include <linux/init.h>
17 static struct ctl_table net_core_table[] = {
20 .procname = "wmem_max",
21 .data = &sysctl_wmem_max,
22 .maxlen = sizeof(int),
24 .proc_handler = proc_dointvec
27 .procname = "rmem_max",
28 .data = &sysctl_rmem_max,
29 .maxlen = sizeof(int),
31 .proc_handler = proc_dointvec
34 .procname = "wmem_default",
35 .data = &sysctl_wmem_default,
36 .maxlen = sizeof(int),
38 .proc_handler = proc_dointvec
41 .procname = "rmem_default",
42 .data = &sysctl_rmem_default,
43 .maxlen = sizeof(int),
45 .proc_handler = proc_dointvec
48 .procname = "dev_weight",
50 .maxlen = sizeof(int),
52 .proc_handler = proc_dointvec
55 .procname = "netdev_max_backlog",
56 .data = &netdev_max_backlog,
57 .maxlen = sizeof(int),
59 .proc_handler = proc_dointvec
62 .procname = "message_cost",
63 .data = &net_ratelimit_state.interval,
64 .maxlen = sizeof(int),
66 .proc_handler = proc_dointvec_jiffies,
69 .procname = "message_burst",
70 .data = &net_ratelimit_state.burst,
71 .maxlen = sizeof(int),
73 .proc_handler = proc_dointvec,
76 .procname = "optmem_max",
77 .data = &sysctl_optmem_max,
78 .maxlen = sizeof(int),
80 .proc_handler = proc_dointvec
82 #endif /* CONFIG_NET */
84 .procname = "netdev_budget",
85 .data = &netdev_budget,
86 .maxlen = sizeof(int),
88 .proc_handler = proc_dointvec
91 .procname = "warnings",
92 .data = &net_msg_warn,
93 .maxlen = sizeof(int),
95 .proc_handler = proc_dointvec
100 static struct ctl_table netns_core_table[] = {
102 .procname = "somaxconn",
103 .data = &init_net.core.sysctl_somaxconn,
104 .maxlen = sizeof(int),
106 .proc_handler = proc_dointvec
111 __net_initdata struct ctl_path net_core_path[] = {
112 { .procname = "net", },
113 { .procname = "core", },
117 static __net_init int sysctl_core_net_init(struct net *net)
119 struct ctl_table *tbl;
121 net->core.sysctl_somaxconn = SOMAXCONN;
123 tbl = netns_core_table;
124 if (net != &init_net) {
125 tbl = kmemdup(tbl, sizeof(netns_core_table), GFP_KERNEL);
129 tbl[0].data = &net->core.sysctl_somaxconn;
132 net->core.sysctl_hdr = register_net_sysctl_table(net,
134 if (net->core.sysctl_hdr == NULL)
140 if (tbl != netns_core_table)
146 static __net_exit void sysctl_core_net_exit(struct net *net)
148 struct ctl_table *tbl;
150 tbl = net->core.sysctl_hdr->ctl_table_arg;
151 unregister_net_sysctl_table(net->core.sysctl_hdr);
152 BUG_ON(tbl == netns_core_table);
156 static __net_initdata struct pernet_operations sysctl_core_ops = {
157 .init = sysctl_core_net_init,
158 .exit = sysctl_core_net_exit,
161 static __init int sysctl_core_init(void)
163 static struct ctl_table empty[1];
165 register_sysctl_paths(net_core_path, empty);
166 register_net_sysctl_rotable(net_core_path, net_core_table);
167 return register_pernet_subsys(&sysctl_core_ops);
170 fs_initcall(sysctl_core_init);