6d9f239a1e
I want to compile out proc_* and sysctl_* handlers totally and stub them to NULL depending on config options, however usage of & will prevent this, since taking adress of NULL pointer will break compilation. So, drop & in front of every ->proc_handler and every ->strategy handler, it was never needed in fact. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
214 lines
4.7 KiB
C
214 lines
4.7 KiB
C
/* -*- linux-c -*-
|
|
* sysctl_net_core.c: sysctl interface to net core subsystem.
|
|
*
|
|
* Begun April 1, 1996, Mike Shaver.
|
|
* Added /proc/sys/net/core directory entry (empty =) ). [MS]
|
|
*/
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/sysctl.h>
|
|
#include <linux/module.h>
|
|
#include <linux/socket.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/init.h>
|
|
#include <net/sock.h>
|
|
#include <net/xfrm.h>
|
|
|
|
static struct ctl_table net_core_table[] = {
|
|
#ifdef CONFIG_NET
|
|
{
|
|
.ctl_name = NET_CORE_WMEM_MAX,
|
|
.procname = "wmem_max",
|
|
.data = &sysctl_wmem_max,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_RMEM_MAX,
|
|
.procname = "rmem_max",
|
|
.data = &sysctl_rmem_max,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_WMEM_DEFAULT,
|
|
.procname = "wmem_default",
|
|
.data = &sysctl_wmem_default,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_RMEM_DEFAULT,
|
|
.procname = "rmem_default",
|
|
.data = &sysctl_rmem_default,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_DEV_WEIGHT,
|
|
.procname = "dev_weight",
|
|
.data = &weight_p,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_MAX_BACKLOG,
|
|
.procname = "netdev_max_backlog",
|
|
.data = &netdev_max_backlog,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_MSG_COST,
|
|
.procname = "message_cost",
|
|
.data = &net_ratelimit_state.interval,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_jiffies,
|
|
.strategy = sysctl_jiffies,
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_MSG_BURST,
|
|
.procname = "message_burst",
|
|
.data = &net_ratelimit_state.burst,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec,
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_OPTMEM_MAX,
|
|
.procname = "optmem_max",
|
|
.data = &sysctl_optmem_max,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
#ifdef CONFIG_XFRM
|
|
{
|
|
.ctl_name = NET_CORE_AEVENT_ETIME,
|
|
.procname = "xfrm_aevent_etime",
|
|
.data = &sysctl_xfrm_aevent_etime,
|
|
.maxlen = sizeof(u32),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_AEVENT_RSEQTH,
|
|
.procname = "xfrm_aevent_rseqth",
|
|
.data = &sysctl_xfrm_aevent_rseqth,
|
|
.maxlen = sizeof(u32),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = CTL_UNNUMBERED,
|
|
.procname = "xfrm_larval_drop",
|
|
.data = &sysctl_xfrm_larval_drop,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = CTL_UNNUMBERED,
|
|
.procname = "xfrm_acq_expires",
|
|
.data = &sysctl_xfrm_acq_expires,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
#endif /* CONFIG_XFRM */
|
|
#endif /* CONFIG_NET */
|
|
{
|
|
.ctl_name = NET_CORE_BUDGET,
|
|
.procname = "netdev_budget",
|
|
.data = &netdev_budget,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = NET_CORE_WARNINGS,
|
|
.procname = "warnings",
|
|
.data = &net_msg_warn,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{ .ctl_name = 0 }
|
|
};
|
|
|
|
static struct ctl_table netns_core_table[] = {
|
|
{
|
|
.ctl_name = NET_CORE_SOMAXCONN,
|
|
.procname = "somaxconn",
|
|
.data = &init_net.core.sysctl_somaxconn,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
{ .ctl_name = 0 }
|
|
};
|
|
|
|
static __net_initdata struct ctl_path net_core_path[] = {
|
|
{ .procname = "net", .ctl_name = CTL_NET, },
|
|
{ .procname = "core", .ctl_name = NET_CORE, },
|
|
{ },
|
|
};
|
|
|
|
static __net_init int sysctl_core_net_init(struct net *net)
|
|
{
|
|
struct ctl_table *tbl;
|
|
|
|
net->core.sysctl_somaxconn = SOMAXCONN;
|
|
|
|
tbl = netns_core_table;
|
|
if (net != &init_net) {
|
|
tbl = kmemdup(tbl, sizeof(netns_core_table), GFP_KERNEL);
|
|
if (tbl == NULL)
|
|
goto err_dup;
|
|
|
|
tbl[0].data = &net->core.sysctl_somaxconn;
|
|
}
|
|
|
|
net->core.sysctl_hdr = register_net_sysctl_table(net,
|
|
net_core_path, tbl);
|
|
if (net->core.sysctl_hdr == NULL)
|
|
goto err_reg;
|
|
|
|
return 0;
|
|
|
|
err_reg:
|
|
if (tbl != netns_core_table)
|
|
kfree(tbl);
|
|
err_dup:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static __net_exit void sysctl_core_net_exit(struct net *net)
|
|
{
|
|
struct ctl_table *tbl;
|
|
|
|
tbl = net->core.sysctl_hdr->ctl_table_arg;
|
|
unregister_net_sysctl_table(net->core.sysctl_hdr);
|
|
BUG_ON(tbl == netns_core_table);
|
|
kfree(tbl);
|
|
}
|
|
|
|
static __net_initdata struct pernet_operations sysctl_core_ops = {
|
|
.init = sysctl_core_net_init,
|
|
.exit = sysctl_core_net_exit,
|
|
};
|
|
|
|
static __init int sysctl_core_init(void)
|
|
{
|
|
register_net_sysctl_rotable(net_core_path, net_core_table);
|
|
return register_pernet_subsys(&sysctl_core_ops);
|
|
}
|
|
|
|
__initcall(sysctl_core_init);
|