2008-01-11 22:57:09 +08:00
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/* SCTP kernel implementation
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2005-04-17 06:20:36 +08:00
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* (C) Copyright IBM Corp. 2002, 2004
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* Copyright (c) 2002 Intel Corp.
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*
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2008-01-11 22:57:09 +08:00
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* This file is part of the SCTP kernel implementation
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2005-04-17 06:20:36 +08:00
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*
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* Sysctl related interfaces for SCTP.
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*
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2008-01-11 22:57:09 +08:00
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* This SCTP implementation is free software;
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2005-04-17 06:20:36 +08:00
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* you can redistribute it and/or modify it under the terms of
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* the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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2008-01-11 22:57:09 +08:00
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* This SCTP implementation is distributed in the hope that it
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2005-04-17 06:20:36 +08:00
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* ************************
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU CC; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Please send any bug reports or fixes you make to the
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* email address(es):
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2013-07-23 20:51:47 +08:00
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* lksctp developers <linux-sctp@vger.kernel.org>
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2005-04-17 06:20:36 +08:00
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*
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* Written or modified by:
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* Mingqin Liu <liuming@us.ibm.com>
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* Jon Grimm <jgrimm@us.ibm.com>
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* Ardelle Fan <ardelle.fan@intel.com>
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* Ryan Layer <rmlayer@us.ibm.com>
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* Sridhar Samudrala <sri@us.ibm.com>
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*/
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#include <net/sctp/structs.h>
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2005-09-06 09:07:42 +08:00
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#include <net/sctp/sctp.h>
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2005-04-17 06:20:36 +08:00
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#include <linux/sysctl.h>
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2006-08-23 04:29:17 +08:00
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static int zero = 0;
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static int one = 1;
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static int timer_max = 86400000; /* ms in one day */
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static int int_max = INT_MAX;
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2009-05-13 06:03:20 +08:00
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static int sack_timer_min = 1;
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static int sack_timer_max = 500;
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2009-09-03 19:55:47 +08:00
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static int addr_scope_max = 3; /* check sctp_scope_policy_t in include/net/sctp/constants.h for max entries */
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2009-11-24 04:53:57 +08:00
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static int rwnd_scale_max = 16;
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2011-12-16 20:44:15 +08:00
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static unsigned long max_autoclose_min = 0;
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static unsigned long max_autoclose_max =
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(MAX_SCHEDULE_TIMEOUT / HZ > UINT_MAX)
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? UINT_MAX : MAX_SCHEDULE_TIMEOUT / HZ;
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2005-04-17 06:20:36 +08:00
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2010-11-10 07:24:26 +08:00
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extern long sysctl_sctp_mem[3];
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2007-09-17 07:04:37 +08:00
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extern int sysctl_sctp_rmem[3];
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extern int sysctl_sctp_wmem[3];
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2007-08-16 07:07:44 +08:00
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2013-06-12 14:04:25 +08:00
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static int proc_sctp_do_hmac_alg(struct ctl_table *ctl,
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2012-10-24 17:20:03 +08:00
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int write,
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void __user *buffer, size_t *lenp,
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loff_t *ppos);
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2013-06-12 14:04:25 +08:00
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static struct ctl_table sctp_table[] = {
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2012-08-07 15:29:57 +08:00
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{
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.procname = "sctp_mem",
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.data = &sysctl_sctp_mem,
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.maxlen = sizeof(sysctl_sctp_mem),
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.mode = 0644,
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.proc_handler = proc_doulongvec_minmax
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},
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{
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.procname = "sctp_rmem",
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.data = &sysctl_sctp_rmem,
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.maxlen = sizeof(sysctl_sctp_rmem),
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.mode = 0644,
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.proc_handler = proc_dointvec,
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},
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{
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.procname = "sctp_wmem",
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.data = &sysctl_sctp_wmem,
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.maxlen = sizeof(sysctl_sctp_wmem),
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.mode = 0644,
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.proc_handler = proc_dointvec,
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},
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{ /* sentinel */ }
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};
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2013-06-12 14:04:25 +08:00
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static struct ctl_table sctp_net_table[] = {
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2005-04-17 06:20:36 +08:00
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{
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.procname = "rto_initial",
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2012-08-07 15:29:57 +08:00
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.data = &init_net.sctp.rto_initial,
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2006-08-23 04:29:17 +08:00
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.maxlen = sizeof(unsigned int),
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2005-04-17 06:20:36 +08:00
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec_minmax,
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2006-08-23 04:29:17 +08:00
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.extra1 = &one,
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.extra2 = &timer_max
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2005-04-17 06:20:36 +08:00
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},
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{
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.procname = "rto_min",
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2012-08-07 15:29:57 +08:00
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.data = &init_net.sctp.rto_min,
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2006-08-23 04:29:17 +08:00
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.maxlen = sizeof(unsigned int),
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2005-04-17 06:20:36 +08:00
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec_minmax,
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2006-08-23 04:29:17 +08:00
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.extra1 = &one,
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.extra2 = &timer_max
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2005-04-17 06:20:36 +08:00
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},
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{
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.procname = "rto_max",
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2012-08-07 15:29:57 +08:00
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.data = &init_net.sctp.rto_max,
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2006-08-23 04:29:17 +08:00
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.maxlen = sizeof(unsigned int),
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2005-04-17 06:20:36 +08:00
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec_minmax,
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2006-08-23 04:29:17 +08:00
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.extra1 = &one,
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.extra2 = &timer_max
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2005-04-17 06:20:36 +08:00
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},
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{
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2012-08-07 15:29:57 +08:00
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.procname = "rto_alpha_exp_divisor",
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.data = &init_net.sctp.rto_alpha,
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.maxlen = sizeof(int),
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.mode = 0444,
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.proc_handler = proc_dointvec,
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},
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{
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.procname = "rto_beta_exp_divisor",
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.data = &init_net.sctp.rto_beta,
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.maxlen = sizeof(int),
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.mode = 0444,
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.proc_handler = proc_dointvec,
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2005-04-17 06:20:36 +08:00
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},
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{
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.procname = "max_burst",
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2012-08-07 15:29:57 +08:00
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.data = &init_net.sctp.max_burst,
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2005-04-17 06:20:36 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec_minmax,
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2006-08-23 04:29:17 +08:00
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.extra1 = &zero,
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.extra2 = &int_max
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2005-04-17 06:20:36 +08:00
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},
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{
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2012-08-07 15:29:57 +08:00
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.procname = "cookie_preserve_enable",
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.data = &init_net.sctp.cookie_preserve_enable,
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2005-04-17 06:20:36 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2012-08-07 15:29:57 +08:00
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.proc_handler = proc_dointvec,
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},
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2012-10-24 17:20:03 +08:00
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{
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.procname = "cookie_hmac_alg",
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.maxlen = 8,
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.mode = 0644,
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.proc_handler = proc_sctp_do_hmac_alg,
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},
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2012-08-07 15:29:57 +08:00
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{
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.procname = "valid_cookie_life",
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.data = &init_net.sctp.valid_cookie_life,
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.maxlen = sizeof(unsigned int),
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec_minmax,
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2012-08-07 15:29:57 +08:00
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.extra1 = &one,
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.extra2 = &timer_max
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2005-04-17 06:20:36 +08:00
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},
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2005-04-29 03:02:04 +08:00
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{
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2012-08-07 15:29:57 +08:00
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.procname = "sack_timeout",
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.data = &init_net.sctp.sack_timeout,
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2005-04-29 03:02:04 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2012-08-07 15:29:57 +08:00
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &sack_timer_min,
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.extra2 = &sack_timer_max,
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2005-04-29 03:02:04 +08:00
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},
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2005-11-12 08:08:24 +08:00
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{
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2012-08-07 15:29:57 +08:00
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.procname = "hb_interval",
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.data = &init_net.sctp.hb_interval,
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.maxlen = sizeof(unsigned int),
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2005-11-12 08:08:24 +08:00
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.mode = 0644,
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2012-08-07 15:29:57 +08:00
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.proc_handler = proc_dointvec_minmax,
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.extra1 = &one,
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.extra2 = &timer_max
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2005-11-12 08:08:24 +08:00
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},
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2005-04-17 06:20:36 +08:00
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{
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2012-08-07 15:29:57 +08:00
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.procname = "association_max_retrans",
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.data = &init_net.sctp.max_retrans_association,
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2005-04-17 06:20:36 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec_minmax,
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2006-08-23 04:29:17 +08:00
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.extra1 = &one,
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.extra2 = &int_max
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2005-04-17 06:20:36 +08:00
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},
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2012-07-21 15:56:07 +08:00
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{
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2012-08-07 15:29:57 +08:00
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.procname = "path_max_retrans",
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.data = &init_net.sctp.max_retrans_path,
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2012-07-21 15:56:07 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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2012-08-07 15:29:57 +08:00
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.extra1 = &one,
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2012-07-21 15:56:07 +08:00
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.extra2 = &int_max
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},
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2005-04-17 06:20:36 +08:00
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{
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.procname = "max_init_retransmits",
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2012-08-07 15:29:57 +08:00
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.data = &init_net.sctp.max_retrans_init,
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2005-04-17 06:20:36 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec_minmax,
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2006-08-23 04:29:17 +08:00
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.extra1 = &one,
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.extra2 = &int_max
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2005-04-17 06:20:36 +08:00
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},
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{
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2012-08-07 15:29:57 +08:00
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.procname = "pf_retrans",
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.data = &init_net.sctp.pf_retrans,
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.maxlen = sizeof(int),
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2005-04-17 06:20:36 +08:00
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec_minmax,
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2012-08-07 15:29:57 +08:00
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.extra1 = &zero,
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.extra2 = &int_max
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2005-04-17 06:20:36 +08:00
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},
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{
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2012-08-07 15:29:57 +08:00
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.procname = "sndbuf_policy",
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.data = &init_net.sctp.sndbuf_policy,
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2006-01-18 03:55:17 +08:00
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.maxlen = sizeof(int),
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2005-04-17 06:20:36 +08:00
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec,
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2005-04-17 06:20:36 +08:00
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},
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{
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2012-08-07 15:29:57 +08:00
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.procname = "rcvbuf_policy",
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.data = &init_net.sctp.rcvbuf_policy,
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2011-04-26 16:36:05 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec,
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},
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{
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.procname = "default_auto_asconf",
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2012-08-07 15:29:57 +08:00
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.data = &init_net.sctp.default_auto_asconf,
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2005-04-17 06:20:36 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec,
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2005-04-17 06:20:36 +08:00
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},
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{
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2012-08-07 15:29:57 +08:00
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.procname = "addip_enable",
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.data = &init_net.sctp.addip_enable,
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2005-04-17 06:20:36 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec,
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2005-04-17 06:20:36 +08:00
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},
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2005-06-29 04:24:23 +08:00
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{
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2012-08-07 15:29:57 +08:00
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.procname = "addip_noauth_enable",
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.data = &init_net.sctp.addip_noauth,
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2009-05-13 06:03:20 +08:00
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.maxlen = sizeof(int),
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2005-06-29 04:24:23 +08:00
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec,
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2007-08-16 07:07:44 +08:00
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},
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{
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2012-08-07 15:29:57 +08:00
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.procname = "prsctp_enable",
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.data = &init_net.sctp.prsctp_enable,
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2007-09-17 10:31:35 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec,
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2007-09-17 10:31:35 +08:00
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},
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2007-10-25 05:24:26 +08:00
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{
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2012-08-07 15:29:57 +08:00
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.procname = "auth_enable",
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.data = &init_net.sctp.auth_enable,
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2007-10-25 05:24:26 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2008-11-04 10:21:05 +08:00
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.proc_handler = proc_dointvec,
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2007-10-25 05:24:26 +08:00
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},
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2009-09-03 19:55:47 +08:00
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{
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.procname = "addr_scope_policy",
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2012-08-07 15:29:57 +08:00
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.data = &init_net.sctp.scope_policy,
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2009-09-03 19:55:47 +08:00
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.maxlen = sizeof(int),
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.mode = 0644,
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2009-11-16 19:11:48 +08:00
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.proc_handler = proc_dointvec_minmax,
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2009-09-03 19:55:47 +08:00
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.extra1 = &zero,
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|
|
.extra2 = &addr_scope_max,
|
|
|
|
},
|
2009-11-24 04:53:57 +08:00
|
|
|
{
|
|
|
|
.procname = "rwnd_update_shift",
|
2012-08-07 15:29:57 +08:00
|
|
|
.data = &init_net.sctp.rwnd_upd_shift,
|
2009-11-24 04:53:57 +08:00
|
|
|
.maxlen = sizeof(int),
|
|
|
|
.mode = 0644,
|
|
|
|
.proc_handler = &proc_dointvec_minmax,
|
|
|
|
.extra1 = &one,
|
|
|
|
.extra2 = &rwnd_scale_max,
|
|
|
|
},
|
2011-12-16 20:44:15 +08:00
|
|
|
{
|
|
|
|
.procname = "max_autoclose",
|
2012-08-07 15:29:57 +08:00
|
|
|
.data = &init_net.sctp.max_autoclose,
|
2011-12-16 20:44:15 +08:00
|
|
|
.maxlen = sizeof(unsigned long),
|
|
|
|
.mode = 0644,
|
|
|
|
.proc_handler = &proc_doulongvec_minmax,
|
|
|
|
.extra1 = &max_autoclose_min,
|
|
|
|
.extra2 = &max_autoclose_max,
|
|
|
|
},
|
2013-08-07 03:18:12 +08:00
|
|
|
{
|
|
|
|
.procname = "checksum_disable",
|
|
|
|
.data = &init_net.sctp.checksum_disable,
|
|
|
|
.maxlen = sizeof(int),
|
|
|
|
.mode = 0644,
|
|
|
|
.proc_handler = proc_dointvec_minmax,
|
|
|
|
.extra1 = &zero,
|
|
|
|
.extra2 = &one,
|
|
|
|
},
|
2009-12-08 23:55:01 +08:00
|
|
|
{ /* sentinel */ }
|
2005-04-17 06:20:36 +08:00
|
|
|
};
|
|
|
|
|
2013-06-12 14:04:25 +08:00
|
|
|
static int proc_sctp_do_hmac_alg(struct ctl_table *ctl,
|
2012-10-24 17:20:03 +08:00
|
|
|
int write,
|
|
|
|
void __user *buffer, size_t *lenp,
|
|
|
|
loff_t *ppos)
|
|
|
|
{
|
|
|
|
struct net *net = current->nsproxy->net_ns;
|
|
|
|
char tmp[8];
|
2013-06-12 14:04:25 +08:00
|
|
|
struct ctl_table tbl;
|
2012-10-24 17:20:03 +08:00
|
|
|
int ret;
|
|
|
|
int changed = 0;
|
|
|
|
char *none = "none";
|
|
|
|
|
|
|
|
memset(&tbl, 0, sizeof(struct ctl_table));
|
|
|
|
|
|
|
|
if (write) {
|
|
|
|
tbl.data = tmp;
|
|
|
|
tbl.maxlen = 8;
|
|
|
|
} else {
|
|
|
|
tbl.data = net->sctp.sctp_hmac_alg ? : none;
|
|
|
|
tbl.maxlen = strlen(tbl.data);
|
|
|
|
}
|
|
|
|
ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
|
|
|
|
|
|
|
|
if (write) {
|
|
|
|
#ifdef CONFIG_CRYPTO_MD5
|
|
|
|
if (!strncmp(tmp, "md5", 3)) {
|
|
|
|
net->sctp.sctp_hmac_alg = "md5";
|
|
|
|
changed = 1;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_CRYPTO_SHA1
|
|
|
|
if (!strncmp(tmp, "sha1", 4)) {
|
|
|
|
net->sctp.sctp_hmac_alg = "sha1";
|
|
|
|
changed = 1;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
if (!strncmp(tmp, "none", 4)) {
|
|
|
|
net->sctp.sctp_hmac_alg = NULL;
|
|
|
|
changed = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!changed)
|
|
|
|
ret = -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-08-07 15:23:59 +08:00
|
|
|
int sctp_sysctl_net_register(struct net *net)
|
|
|
|
{
|
|
|
|
struct ctl_table *table;
|
2012-08-07 15:29:57 +08:00
|
|
|
int i;
|
2012-08-07 15:23:59 +08:00
|
|
|
|
|
|
|
table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
|
|
|
|
if (!table)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2012-08-07 15:29:57 +08:00
|
|
|
for (i = 0; table[i].data; i++)
|
|
|
|
table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
|
|
|
|
|
2012-08-07 15:23:59 +08:00
|
|
|
net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void sctp_sysctl_net_unregister(struct net *net)
|
|
|
|
{
|
2013-01-25 00:02:47 +08:00
|
|
|
struct ctl_table *table;
|
|
|
|
|
|
|
|
table = net->sctp.sysctl_header->ctl_table_arg;
|
2012-08-07 15:23:59 +08:00
|
|
|
unregister_net_sysctl_table(net->sctp.sysctl_header);
|
2013-01-25 00:02:47 +08:00
|
|
|
kfree(table);
|
2012-08-07 15:23:59 +08:00
|
|
|
}
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
static struct ctl_table_header * sctp_sysctl_header;
|
|
|
|
|
|
|
|
/* Sysctl registration. */
|
|
|
|
void sctp_sysctl_register(void)
|
|
|
|
{
|
2012-04-19 21:44:49 +08:00
|
|
|
sctp_sysctl_header = register_net_sysctl(&init_net, "net/sctp", sctp_table);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Sysctl deregistration. */
|
|
|
|
void sctp_sysctl_unregister(void)
|
|
|
|
{
|
2012-04-19 21:24:33 +08:00
|
|
|
unregister_net_sysctl_table(sctp_sysctl_header);
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|