/* SCTP kernel reference Implementation
* (C) Copyright IBM Corp. 2002, 2004
* Copyright (c) 2002 Intel Corp.
*
* This file is part of the SCTP kernel reference Implementation
*
* Sysctl related interfaces for SCTP.
*
* The SCTP reference implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* The SCTP reference implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU CC; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Please send any bug reports or fixes you make to the
* email address(es):
* lksctp developers <lksctp-developers@lists.sourceforge.net>
*
* Or submit a bug report through the following website:
* http://www.sf.net/projects/lksctp
*
* Written or modified by:
* Mingqin Liu <liuming@us.ibm.com>
* Jon Grimm <jgrimm@us.ibm.com>
* Ardelle Fan <ardelle.fan@intel.com>
* Ryan Layer <rmlayer@us.ibm.com>
* Sridhar Samudrala <sri@us.ibm.com>
*
* Any bugs reported given to us we will try to fix... any fixes shared will
* be incorporated into the next SCTP release.
*/
#include <net/sctp/structs.h>
#include <net/sctp/sctp.h>
#include <linux/sysctl.h>
static ctl_handler sctp_sysctl_jiffies_ms;
static long rto_timer_min = 1;
static long rto_timer_max = 86400000; /* One day */
static long sack_timer_min = 1;
static long sack_timer_max = 500;
static ctl_table sctp_table[] = {
{
.ctl_name = NET_SCTP_RTO_INITIAL,
.procname = "rto_initial",
.data = &sctp_rto_initial,
.maxlen = sizeof(long),
.mode = 0644,
.proc_handler = &proc_doulongvec_ms_jiffies_minmax,
.strategy = &sctp_sysctl_jiffies_ms,
.extra1 = &rto_timer_min,
.extra2 = &rto_timer_max
},
{
.ctl_name = NET_SCTP_RTO_MIN,
.procname = "rto_min",
.data = &sctp_rto_min,
.maxlen = sizeof(long),
.mode = 0644,
.proc_handler = &proc_doulongvec_ms_jiffies_minmax,
.strategy = &sctp_sysctl_jiffies_ms,
.extra1 = &rto_timer_min,
.extra2 = &rto_timer_max
},
{
.ctl_name = NET_SCTP_RTO_MAX,
.procname = "rto_max",
.data = &sctp_rto_max,
.maxlen = sizeof(long),
.mode = 0644,
.proc_handler = &proc_doulongvec_ms_jiffies_minmax,
.strategy = &sctp_sysctl_jiffies_ms,
.extra1 = &rto_timer_min,
.extra2 = &rto_timer_max
},
{
.ctl_name = NET_SCTP_VALID_COOKIE_LIFE,
.procname = "valid_cookie_life",
.data = &sctp_valid_cookie_life,
.maxlen = sizeof(long),
.mode = 0644,
.proc_handler = &proc_doulongvec_ms_jiffies_minmax,
.strategy = &sctp_sysctl_jiffies_ms,
.extra1 = &rto_timer_min,
.extra2 = &rto_timer_max
},
{
.ctl_name = NET_SCTP_MAX_BURST,
.procname = "max_burst",
.data = &sctp_max_burst,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_SCTP_ASSOCIATION_MAX_RETRANS,
.procname = "association_max_retrans",
.data = &sctp_max_retrans_association,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_SCTP_SNDBUF_POLICY,
.procname = "sndbuf_policy",
.data = &sctp_sndbuf_policy,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_SCTP_PATH_MAX_RETRANS,
.procname = "path_max_retrans",
.data = &sctp_max_retrans_path,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_SCTP_MAX_INIT_RETRANSMITS,
.procname = "max_init_retransmits",
.data = &sctp_max_retrans_init,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_SCTP_HB_INTERVAL,
.procname = "hb_interval",
.data = &sctp_hb_interval,
.maxlen = sizeof(long),
.mode = 0644,
.proc_handler = &proc_doulongvec_ms_jiffies_minmax,
.strategy = &sctp_sysctl_jiffies_ms,
.extra1 = &rto_timer_min,
.extra2 = &rto_timer_max
},
{
.ctl_name = NET_SCTP_PRESERVE_ENABLE,
.procname = "cookie_preserve_enable",
.data = &sctp_cookie_preserve_enable,
.maxlen = sizeof(long),
.mode = 0644,
.proc_handler = &proc_doulongvec_ms_jiffies_minmax,
.strategy = &sctp_sysctl_jiffies_ms,
.extra1 = &rto_timer_min,
.extra2 = &rto_timer_max
},
{
.ctl_name = NET_SCTP_RTO_ALPHA,
.procname = "rto_alpha_exp_divisor",
.data = &sctp_rto_alpha,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_SCTP_RTO_BETA,
.procname = "rto_beta_exp_divisor",
.data = &sctp_rto_beta,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_SCTP_ADDIP_ENABLE,
.procname = "addip_enable",
.data = &sctp_addip_enable,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_SCTP_PRSCTP_ENABLE,
.procname = "prsctp_enable",
.data = &sctp_prsctp_enable,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = NET_SCTP_SACK_TIMEOUT,
.procname = "sack_timeout",
.data = &sctp_sack_timeout,
.maxlen = sizeof(long),
.mode = 0644,
.proc_handler = &proc_doulongvec_ms_jiffies_minmax,
.strategy = &sctp_sysctl_jiffies_ms,
.extra1 = &sack_timer_min,
.extra2 = &sack_timer_max,
},
{ .ctl_name = 0 }
};
static ctl_table sctp_net_table[] = {
{
.ctl_name = NET_SCTP,
.procname = "sctp",
.mode = 0555,
.child = sctp_table
},
{ .ctl_name = 0 }
};
static ctl_table sctp_root_table[] = {
{
.ctl_name = CTL_NET,
.procname = "net",
.mode = 0555,
.child = sctp_net_table
},
{ .ctl_name = 0 }
};
static struct ctl_table_header * sctp_sysctl_header;
/* Sysctl registration. */
void sctp_sysctl_register(void)
{
sctp_sysctl_header = register_sysctl_table(sctp_root_table, 0);
}
/* Sysctl deregistration. */
void sctp_sysctl_unregister(void)
{
unregister_sysctl_table(sctp_sysctl_header);
}
/* Strategy function to convert jiffies to milliseconds. */
static int sctp_sysctl_jiffies_ms(ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
void __user *newval, size_t newlen, void **context) {
if (oldval) {
size_t olen;
if (oldlenp) {
if (get_user(olen, oldlenp))
return -EFAULT;
if (olen != sizeof (int))
return -EINVAL;
}
if (put_user((*(int *)(table->data) * 1000) / HZ,
(int __user *)oldval) ||
(oldlenp && put_user(sizeof (int), oldlenp)))
return -EFAULT;
}
if (newval && newlen) {
int new;
if (newlen != sizeof (int))
return -EINVAL;
if (get_user(new, (int __user *)newval))
return -EFAULT;
*(int *)(table->data) = (new * HZ) / 1000;
}
return 1;
}
