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/net/rds/sysctl.c

http://github.com/mirrors/linux
C | 110 lines | 68 code | 10 blank | 32 comment | 1 complexity | 2fcb8398bdfed659826083f5493df2df MD5 | raw file
  1/*
  2 * Copyright (c) 2006 Oracle.  All rights reserved.
  3 *
  4 * This software is available to you under a choice of one of two
  5 * licenses.  You may choose to be licensed under the terms of the GNU
  6 * General Public License (GPL) Version 2, available from the file
  7 * COPYING in the main directory of this source tree, or the
  8 * OpenIB.org BSD license below:
  9 *
 10 *     Redistribution and use in source and binary forms, with or
 11 *     without modification, are permitted provided that the following
 12 *     conditions are met:
 13 *
 14 *      - Redistributions of source code must retain the above
 15 *        copyright notice, this list of conditions and the following
 16 *        disclaimer.
 17 *
 18 *      - Redistributions in binary form must reproduce the above
 19 *        copyright notice, this list of conditions and the following
 20 *        disclaimer in the documentation and/or other materials
 21 *        provided with the distribution.
 22 *
 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 30 * SOFTWARE.
 31 *
 32 */
 33#include <linux/kernel.h>
 34#include <linux/sysctl.h>
 35#include <linux/proc_fs.h>
 36
 37#include "rds.h"
 38
 39static struct ctl_table_header *rds_sysctl_reg_table;
 40
 41static unsigned long rds_sysctl_reconnect_min = 1;
 42static unsigned long rds_sysctl_reconnect_max = ~0UL;
 43
 44unsigned long rds_sysctl_reconnect_min_jiffies;
 45unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
 46
 47unsigned int  rds_sysctl_max_unacked_packets = 8;
 48unsigned int  rds_sysctl_max_unacked_bytes = (16 << 20);
 49
 50unsigned int rds_sysctl_ping_enable = 1;
 51
 52static struct ctl_table rds_sysctl_rds_table[] = {
 53	{
 54		.procname       = "reconnect_min_delay_ms",
 55		.data		= &rds_sysctl_reconnect_min_jiffies,
 56		.maxlen         = sizeof(unsigned long),
 57		.mode           = 0644,
 58		.proc_handler   = proc_doulongvec_ms_jiffies_minmax,
 59		.extra1		= &rds_sysctl_reconnect_min,
 60		.extra2		= &rds_sysctl_reconnect_max_jiffies,
 61	},
 62	{
 63		.procname       = "reconnect_max_delay_ms",
 64		.data		= &rds_sysctl_reconnect_max_jiffies,
 65		.maxlen         = sizeof(unsigned long),
 66		.mode           = 0644,
 67		.proc_handler   = proc_doulongvec_ms_jiffies_minmax,
 68		.extra1		= &rds_sysctl_reconnect_min_jiffies,
 69		.extra2		= &rds_sysctl_reconnect_max,
 70	},
 71	{
 72		.procname	= "max_unacked_packets",
 73		.data		= &rds_sysctl_max_unacked_packets,
 74		.maxlen         = sizeof(int),
 75		.mode           = 0644,
 76		.proc_handler   = proc_dointvec,
 77	},
 78	{
 79		.procname	= "max_unacked_bytes",
 80		.data		= &rds_sysctl_max_unacked_bytes,
 81		.maxlen         = sizeof(int),
 82		.mode           = 0644,
 83		.proc_handler   = proc_dointvec,
 84	},
 85	{
 86		.procname	= "ping_enable",
 87		.data		= &rds_sysctl_ping_enable,
 88		.maxlen         = sizeof(int),
 89		.mode           = 0644,
 90		.proc_handler   = proc_dointvec,
 91	},
 92	{ }
 93};
 94
 95void rds_sysctl_exit(void)
 96{
 97	unregister_net_sysctl_table(rds_sysctl_reg_table);
 98}
 99
100int rds_sysctl_init(void)
101{
102	rds_sysctl_reconnect_min = msecs_to_jiffies(1);
103	rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
104
105	rds_sysctl_reg_table =
106		register_net_sysctl(&init_net, "net/rds", rds_sysctl_rds_table);
107	if (!rds_sysctl_reg_table)
108		return -ENOMEM;
109	return 0;
110}