mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 04:36:40 +07:00
0b4d414714
The semantic effect of insert_at_head is that it would allow new registered sysctl entries to override existing sysctl entries of the same name. Which is pain for caching and the proc interface never implemented. I have done an audit and discovered that none of the current users of register_sysctl care as (excpet for directories) they do not register duplicate sysctl entries. So this patch simply removes the support for overriding existing entries in the sys_sysctl interface since no one uses it or cares and it makes future enhancments harder. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Andi Kleen <ak@muc.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Corey Minyard <minyard@acm.org> Cc: Neil Brown <neilb@suse.de> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Jan Kara <jack@ucw.cz> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: David Chinner <dgc@sgi.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
265 lines
6.8 KiB
C
265 lines
6.8 KiB
C
/* 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 int zero = 0;
|
|
static int one = 1;
|
|
static int timer_max = 86400000; /* ms in one day */
|
|
static int int_max = INT_MAX;
|
|
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(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_RTO_MIN,
|
|
.procname = "rto_min",
|
|
.data = &sctp_rto_min,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_RTO_MAX,
|
|
.procname = "rto_max",
|
|
.data = &sctp_rto_max,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_VALID_COOKIE_LIFE,
|
|
.procname = "valid_cookie_life",
|
|
.data = &sctp_valid_cookie_life,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_MAX_BURST,
|
|
.procname = "max_burst",
|
|
.data = &sctp_max_burst,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.extra1 = &zero,
|
|
.extra2 = &int_max
|
|
},
|
|
{
|
|
.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_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.extra1 = &one,
|
|
.extra2 = &int_max
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_SNDBUF_POLICY,
|
|
.procname = "sndbuf_policy",
|
|
.data = &sctp_sndbuf_policy,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
.strategy = &sysctl_intvec
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_RCVBUF_POLICY,
|
|
.procname = "rcvbuf_policy",
|
|
.data = &sctp_rcvbuf_policy,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
.strategy = &sysctl_intvec
|
|
},
|
|
{
|
|
.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_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.extra1 = &one,
|
|
.extra2 = &int_max
|
|
},
|
|
{
|
|
.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_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.extra1 = &one,
|
|
.extra2 = &int_max
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_HB_INTERVAL,
|
|
.procname = "hb_interval",
|
|
.data = &sctp_hb_interval,
|
|
.maxlen = sizeof(unsigned int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.extra1 = &one,
|
|
.extra2 = &timer_max
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_PRESERVE_ENABLE,
|
|
.procname = "cookie_preserve_enable",
|
|
.data = &sctp_cookie_preserve_enable,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
.strategy = &sysctl_intvec
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_RTO_ALPHA,
|
|
.procname = "rto_alpha_exp_divisor",
|
|
.data = &sctp_rto_alpha,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dointvec,
|
|
.strategy = &sysctl_intvec
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_RTO_BETA,
|
|
.procname = "rto_beta_exp_divisor",
|
|
.data = &sctp_rto_beta,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dointvec,
|
|
.strategy = &sysctl_intvec
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_ADDIP_ENABLE,
|
|
.procname = "addip_enable",
|
|
.data = &sctp_addip_enable,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
.strategy = &sysctl_intvec
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_PRSCTP_ENABLE,
|
|
.procname = "prsctp_enable",
|
|
.data = &sctp_prsctp_enable,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
.strategy = &sysctl_intvec
|
|
},
|
|
{
|
|
.ctl_name = NET_SCTP_SACK_TIMEOUT,
|
|
.procname = "sack_timeout",
|
|
.data = &sctp_sack_timeout,
|
|
.maxlen = sizeof(long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec_minmax,
|
|
.strategy = &sysctl_intvec,
|
|
.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);
|
|
}
|
|
|
|
/* Sysctl deregistration. */
|
|
void sctp_sysctl_unregister(void)
|
|
{
|
|
unregister_sysctl_table(sctp_sysctl_header);
|
|
}
|