2005-04-16 15:20:36 -07:00
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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 22:18:02 -07:00
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#include <linux/socket.h>
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2007-10-23 21:13:53 -07:00
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#include <linux/netdevice.h>
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2009-09-22 07:18:09 -07:00
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#include <linux/ratelimit.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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2009-09-22 07:18:09 -07:00
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2009-02-25 03:32:14 -07:00
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#include <net/ip.h>
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2005-08-15 22:18:02 -07:00
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#include <net/sock.h>
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2005-04-16 15:20:36 -07:00
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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 15:20:36 -07:00
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#ifdef CONFIG_NET
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{
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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 15:20:36 -07:00
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},
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{
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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 15:20:36 -07:00
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},
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{
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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 15:20:36 -07:00
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},
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{
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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 15:20:36 -07:00
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},
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{
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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 15:20:36 -07:00
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},
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{
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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 15:20:36 -07:00
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},
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{
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.procname = "message_cost",
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2008-07-25 01:45:58 -07:00
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.data = &net_ratelimit_state.interval,
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2005-04-16 15:20:36 -07:00
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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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2005-04-16 15:20:36 -07:00
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},
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{
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.procname = "message_burst",
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2008-07-25 01:45:58 -07:00
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.data = &net_ratelimit_state.burst,
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2005-04-16 15:20:36 -07:00
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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 15:20:36 -07:00
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},
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{
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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 15:20:36 -07:00
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},
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#endif /* CONFIG_NET */
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2005-06-23 20:14:40 -07:00
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{
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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 20:14:40 -07:00
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},
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2007-03-08 21:41:08 -07:00
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{
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.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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2009-11-05 14:32:03 -07:00
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{ }
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2005-04-16 15:20:36 -07:00
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};
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2007-12-05 02:37:34 -07:00
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2008-05-19 13:49:52 -07:00
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static struct ctl_table netns_core_table[] = {
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{
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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 13:49:52 -07:00
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},
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2009-11-05 14:32:03 -07:00
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{ }
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2008-05-19 13:49:52 -07:00
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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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2009-11-05 14:32:03 -07:00
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{ .procname = "net", },
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{ .procname = "core", },
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2007-12-05 02:37:34 -07:00
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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 13:49:52 -07:00
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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 19:41:14 -07:00
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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 13:49:52 -07:00
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tbl = netns_core_table;
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2009-11-25 16:14:13 -07:00
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if (!net_eq(net, &init_net)) {
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2008-05-19 13:49:52 -07:00
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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 13:49:52 -07:00
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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 19:41:14 -07:00
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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 19:41:14 -07:00
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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 13:49:52 -07:00
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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 19:41:14 -07:00
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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 13:49:52 -07:00
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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 13:49:52 -07:00
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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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