2005-04-16 16:20:36 -06:00
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/* -*- linux-c -*-
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* sysctl_net_core.c: sysctl interface to net core subsystem.
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*
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* Begun April 1, 1996, Mike Shaver.
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* Added /proc/sys/net/core directory entry (empty =) ). [MS]
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*/
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#include <linux/mm.h>
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#include <linux/sysctl.h>
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#include <linux/module.h>
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2005-08-15 23:18:02 -06:00
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#include <linux/socket.h>
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2007-10-23 22:13:53 -06:00
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#include <linux/netdevice.h>
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2007-12-05 02:37:34 -07:00
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#include <linux/init.h>
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2005-08-15 23:18:02 -06:00
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#include <net/sock.h>
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2005-04-16 16:20:36 -06:00
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2007-12-05 02:37:34 -07:00
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static struct ctl_table net_core_table[] = {
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2005-04-16 16:20:36 -06:00
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#ifdef CONFIG_NET
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{
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.ctl_name = NET_CORE_WMEM_MAX,
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.procname = "wmem_max",
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.data = &sysctl_wmem_max,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2005-04-16 16:20:36 -06:00
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},
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{
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.ctl_name = NET_CORE_RMEM_MAX,
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.procname = "rmem_max",
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.data = &sysctl_rmem_max,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2005-04-16 16:20:36 -06:00
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},
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{
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.ctl_name = NET_CORE_WMEM_DEFAULT,
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.procname = "wmem_default",
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.data = &sysctl_wmem_default,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2005-04-16 16:20:36 -06:00
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},
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{
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.ctl_name = NET_CORE_RMEM_DEFAULT,
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.procname = "rmem_default",
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.data = &sysctl_rmem_default,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2005-04-16 16:20:36 -06:00
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},
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{
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.ctl_name = NET_CORE_DEV_WEIGHT,
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.procname = "dev_weight",
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.data = &weight_p,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2005-04-16 16:20:36 -06:00
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},
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{
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.ctl_name = NET_CORE_MAX_BACKLOG,
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.procname = "netdev_max_backlog",
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.data = &netdev_max_backlog,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2005-04-16 16:20:36 -06:00
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},
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{
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.ctl_name = NET_CORE_MSG_COST,
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.procname = "message_cost",
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2008-07-25 02:45:58 -06:00
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.data = &net_ratelimit_state.interval,
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2005-04-16 16:20:36 -06:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec_jiffies,
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.strategy = sysctl_jiffies,
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2005-04-16 16:20:36 -06:00
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},
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{
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.ctl_name = NET_CORE_MSG_BURST,
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.procname = "message_burst",
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2008-07-25 02:45:58 -06:00
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.data = &net_ratelimit_state.burst,
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2005-04-16 16:20:36 -06:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec,
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2005-04-16 16:20:36 -06:00
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},
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{
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.ctl_name = NET_CORE_OPTMEM_MAX,
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.procname = "optmem_max",
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.data = &sysctl_optmem_max,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2005-04-16 16:20:36 -06:00
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},
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#endif /* CONFIG_NET */
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2005-06-23 21:14:40 -06:00
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{
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.ctl_name = NET_CORE_BUDGET,
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.procname = "netdev_budget",
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.data = &netdev_budget,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2005-06-23 21:14:40 -06:00
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},
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2007-03-08 21:41:08 -07:00
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{
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.ctl_name = NET_CORE_WARNINGS,
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.procname = "warnings",
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.data = &net_msg_warn,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2007-03-08 21:41:08 -07:00
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},
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2005-04-16 16:20:36 -06:00
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{ .ctl_name = 0 }
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};
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2007-12-05 02:37:34 -07:00
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2008-05-19 14:49:52 -06:00
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static struct ctl_table netns_core_table[] = {
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{
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.ctl_name = NET_CORE_SOMAXCONN,
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.procname = "somaxconn",
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.data = &init_net.core.sysctl_somaxconn,
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-03 19:21:05 -07:00
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.proc_handler = proc_dointvec
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2008-05-19 14:49:52 -06:00
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},
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{ .ctl_name = 0 }
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};
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2008-11-25 19:00:48 -07:00
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__net_initdata struct ctl_path net_core_path[] = {
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2007-12-05 02:37:34 -07:00
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{ .procname = "net", .ctl_name = CTL_NET, },
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{ .procname = "core", .ctl_name = NET_CORE, },
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{ },
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};
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2007-12-08 01:09:24 -07:00
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static __net_init int sysctl_core_net_init(struct net *net)
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2007-12-05 02:37:34 -07:00
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{
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2008-05-19 14:49:52 -06:00
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struct ctl_table *tbl;
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2007-12-08 01:09:24 -07:00
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2008-03-31 20:41:14 -06:00
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net->core.sysctl_somaxconn = SOMAXCONN;
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2007-12-08 01:12:33 -07:00
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2008-05-19 14:49:52 -06:00
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tbl = netns_core_table;
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2007-12-08 01:09:24 -07:00
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if (net != &init_net) {
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2008-05-19 14:49:52 -06:00
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tbl = kmemdup(tbl, sizeof(netns_core_table), GFP_KERNEL);
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2007-12-08 01:09:24 -07:00
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if (tbl == NULL)
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goto err_dup;
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2008-05-19 14:49:52 -06:00
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tbl[0].data = &net->core.sysctl_somaxconn;
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2007-12-08 01:09:24 -07:00
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}
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2008-03-31 20:41:14 -06:00
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net->core.sysctl_hdr = register_net_sysctl_table(net,
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2007-12-08 01:09:24 -07:00
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net_core_path, tbl);
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2008-03-31 20:41:14 -06:00
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if (net->core.sysctl_hdr == NULL)
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2007-12-08 01:09:24 -07:00
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goto err_reg;
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2007-12-05 02:37:34 -07:00
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2007-12-08 01:09:24 -07:00
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return 0;
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err_reg:
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2008-05-19 14:49:52 -06:00
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if (tbl != netns_core_table)
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2007-12-08 01:09:24 -07:00
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kfree(tbl);
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err_dup:
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return -ENOMEM;
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}
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static __net_exit void sysctl_core_net_exit(struct net *net)
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{
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struct ctl_table *tbl;
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2008-03-31 20:41:14 -06:00
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tbl = net->core.sysctl_hdr->ctl_table_arg;
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unregister_net_sysctl_table(net->core.sysctl_hdr);
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2008-05-19 14:49:52 -06:00
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BUG_ON(tbl == netns_core_table);
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2007-12-08 01:09:24 -07:00
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kfree(tbl);
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}
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static __net_initdata struct pernet_operations sysctl_core_ops = {
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.init = sysctl_core_net_init,
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.exit = sysctl_core_net_exit,
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};
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static __init int sysctl_core_init(void)
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{
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2008-11-25 19:00:48 -07:00
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static struct ctl_table empty[1];
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register_sysctl_paths(net_core_path, empty);
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2008-05-19 14:49:52 -06:00
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register_net_sysctl_rotable(net_core_path, net_core_table);
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2007-12-08 01:09:24 -07:00
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return register_pernet_subsys(&sysctl_core_ops);
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2007-12-05 02:37:34 -07:00
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}
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2008-11-25 19:00:48 -07:00
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fs_initcall(sysctl_core_init);
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