5dd3df105b
This makes it clearer which sysctls are relative to your current network namespace. This makes it a little less error prone by not exposing sysctls for the initial network namespace in other namespaces. This is the same way we handle all of our other network interfaces to userspace and I can't honestly remember why we didn't do this for sysctls right from the start. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/*
|
|
* net/dccp/sysctl.c
|
|
*
|
|
* An implementation of the DCCP protocol
|
|
* Arnaldo Carvalho de Melo <acme@mandriva.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License v2
|
|
* as published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/sysctl.h>
|
|
#include "dccp.h"
|
|
#include "feat.h"
|
|
|
|
#ifndef CONFIG_SYSCTL
|
|
#error This file should not be compiled without CONFIG_SYSCTL defined
|
|
#endif
|
|
|
|
/* Boundary values */
|
|
static int zero = 0,
|
|
u8_max = 0xFF;
|
|
static unsigned long seqw_min = DCCPF_SEQ_WMIN,
|
|
seqw_max = 0xFFFFFFFF; /* maximum on 32 bit */
|
|
|
|
static struct ctl_table dccp_default_table[] = {
|
|
{
|
|
.procname = "seq_window",
|
|
.data = &sysctl_dccp_sequence_window,
|
|
.maxlen = sizeof(sysctl_dccp_sequence_window),
|
|
.mode = 0644,
|
|
.proc_handler = proc_doulongvec_minmax,
|
|
.extra1 = &seqw_min, /* RFC 4340, 7.5.2 */
|
|
.extra2 = &seqw_max,
|
|
},
|
|
{
|
|
.procname = "rx_ccid",
|
|
.data = &sysctl_dccp_rx_ccid,
|
|
.maxlen = sizeof(sysctl_dccp_rx_ccid),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &zero,
|
|
.extra2 = &u8_max, /* RFC 4340, 10. */
|
|
},
|
|
{
|
|
.procname = "tx_ccid",
|
|
.data = &sysctl_dccp_tx_ccid,
|
|
.maxlen = sizeof(sysctl_dccp_tx_ccid),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &zero,
|
|
.extra2 = &u8_max, /* RFC 4340, 10. */
|
|
},
|
|
{
|
|
.procname = "request_retries",
|
|
.data = &sysctl_dccp_request_retries,
|
|
.maxlen = sizeof(sysctl_dccp_request_retries),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &zero,
|
|
.extra2 = &u8_max,
|
|
},
|
|
{
|
|
.procname = "retries1",
|
|
.data = &sysctl_dccp_retries1,
|
|
.maxlen = sizeof(sysctl_dccp_retries1),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &zero,
|
|
.extra2 = &u8_max,
|
|
},
|
|
{
|
|
.procname = "retries2",
|
|
.data = &sysctl_dccp_retries2,
|
|
.maxlen = sizeof(sysctl_dccp_retries2),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &zero,
|
|
.extra2 = &u8_max,
|
|
},
|
|
{
|
|
.procname = "tx_qlen",
|
|
.data = &sysctl_dccp_tx_qlen,
|
|
.maxlen = sizeof(sysctl_dccp_tx_qlen),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_minmax,
|
|
.extra1 = &zero,
|
|
},
|
|
{
|
|
.procname = "sync_ratelimit",
|
|
.data = &sysctl_dccp_sync_ratelimit,
|
|
.maxlen = sizeof(sysctl_dccp_sync_ratelimit),
|
|
.mode = 0644,
|
|
.proc_handler = proc_dointvec_ms_jiffies,
|
|
},
|
|
|
|
{ }
|
|
};
|
|
|
|
static struct ctl_path dccp_path[] = {
|
|
{ .procname = "net", },
|
|
{ .procname = "dccp", },
|
|
{ .procname = "default", },
|
|
{ }
|
|
};
|
|
|
|
static struct ctl_table_header *dccp_table_header;
|
|
|
|
int __init dccp_sysctl_init(void)
|
|
{
|
|
dccp_table_header = register_net_sysctl_table(&init_net, dccp_path,
|
|
dccp_default_table);
|
|
|
|
return dccp_table_header != NULL ? 0 : -ENOMEM;
|
|
}
|
|
|
|
void dccp_sysctl_exit(void)
|
|
{
|
|
if (dccp_table_header != NULL) {
|
|
unregister_net_sysctl_table(dccp_table_header);
|
|
dccp_table_header = NULL;
|
|
}
|
|
}
|