q3k/linux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
linux/net/sctp/sysctl.c
Eric W. Biederman 0b4d414714 [PATCH] sysctl: remove insert_at_head from register_sysctl 
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>
2007-02-14 08:09:59 -08:00

264 lines
6.8 KiB
C
Raw Blame History

/* 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);
}
Reference in a new issue View git blame Copy permalink