[linux.git] / net / rds / sysctl.c

/*
 * Copyright (c) 2006 Oracle.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
#include <linux/kernel.h>
#include <linux/sysctl.h>
#include <linux/proc_fs.h>

#include "rds.h"

static struct ctl_table_header *rds_sysctl_reg_table;

static unsigned long rds_sysctl_reconnect_min = 1;
static unsigned long rds_sysctl_reconnect_max = ~0UL;

unsigned long rds_sysctl_reconnect_min_jiffies;
unsigned long rds_sysctl_reconnect_max_jiffies = HZ;

unsigned int  rds_sysctl_max_unacked_packets = 8;
unsigned int  rds_sysctl_max_unacked_bytes = (16 << 20);

unsigned int rds_sysctl_ping_enable = 1;

static ctl_table rds_sysctl_rds_table[] = {
	{
		.procname       = "reconnect_min_delay_ms",
		.data		= &rds_sysctl_reconnect_min_jiffies,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = proc_doulongvec_ms_jiffies_minmax,
		.extra1		= &rds_sysctl_reconnect_min,
		.extra2		= &rds_sysctl_reconnect_max_jiffies,
	},
	{
		.procname       = "reconnect_max_delay_ms",
		.data		= &rds_sysctl_reconnect_max_jiffies,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = proc_doulongvec_ms_jiffies_minmax,
		.extra1		= &rds_sysctl_reconnect_min_jiffies,
		.extra2		= &rds_sysctl_reconnect_max,
	},
	{
		.procname	= "max_unacked_packets",
		.data		= &rds_sysctl_max_unacked_packets,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = proc_dointvec,
	},
	{
		.procname	= "max_unacked_bytes",
		.data		= &rds_sysctl_max_unacked_bytes,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = proc_dointvec,
	},
	{
		.procname	= "ping_enable",
		.data		= &rds_sysctl_ping_enable,
		.maxlen         = sizeof(int),
		.mode           = 0644,
		.proc_handler   = proc_dointvec,
	},
	{ }
};

static struct ctl_path rds_sysctl_path[] = {
	{ .procname = "net", },
	{ .procname = "rds", },
	{ }
};


void rds_sysctl_exit(void)
{
	if (rds_sysctl_reg_table)
		unregister_sysctl_table(rds_sysctl_reg_table);
}

int rds_sysctl_init(void)
{
	rds_sysctl_reconnect_min = msecs_to_jiffies(1);
	rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;

	rds_sysctl_reg_table = register_sysctl_paths(rds_sysctl_path, rds_sysctl_rds_table);
	if (!rds_sysctl_reg_table)
		return -ENOMEM;
	return 0;
}
Commit	Line	Data
3e504849 AG	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
	39	static struct ctl_table_header *rds_sysctl_reg_table;
	40
	41	static unsigned long rds_sysctl_reconnect_min = 1;
	42	static unsigned long rds_sysctl_reconnect_max = ~0UL;
	43
	44	unsigned long rds_sysctl_reconnect_min_jiffies;
	45	unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
	46
	47	unsigned int rds_sysctl_max_unacked_packets = 8;
	48	unsigned int rds_sysctl_max_unacked_bytes = (16 << 20);
	49
	50	unsigned int rds_sysctl_ping_enable = 1;
	51
	52	static ctl_table rds_sysctl_rds_table[] = {
	53	{
3e504849 AG	54	.procname = "reconnect_min_delay_ms",
	55	.data = &rds_sysctl_reconnect_min_jiffies,
	56	.maxlen = sizeof(unsigned long),
	57	.mode = 0644,
6d456111	58	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
3e504849 AG	59	.extra1 = &rds_sysctl_reconnect_min,
	60	.extra2 = &rds_sysctl_reconnect_max_jiffies,
	61	},
	62	{
3e504849 AG	63	.procname = "reconnect_max_delay_ms",
	64	.data = &rds_sysctl_reconnect_max_jiffies,
	65	.maxlen = sizeof(unsigned long),
	66	.mode = 0644,
6d456111	67	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
3e504849 AG	68	.extra1 = &rds_sysctl_reconnect_min_jiffies,
	69	.extra2 = &rds_sysctl_reconnect_max,
	70	},
	71	{
3e504849 AG	72	.procname = "max_unacked_packets",
	73	.data = &rds_sysctl_max_unacked_packets,
	74	.maxlen = sizeof(unsigned long),
	75	.mode = 0644,
6d456111	76	.proc_handler = proc_dointvec,
3e504849 AG	77	},
3e504849 AG	78	{
3e504849 AG	79	.procname = "max_unacked_bytes",
	80	.data = &rds_sysctl_max_unacked_bytes,
	81	.maxlen = sizeof(unsigned long),
	82	.mode = 0644,
6d456111	83	.proc_handler = proc_dointvec,
3e504849 AG	84	},
3e504849 AG	85	{
3e504849 AG	86	.procname = "ping_enable",
	87	.data = &rds_sysctl_ping_enable,
	88	.maxlen = sizeof(int),
	89	.mode = 0644,
6d456111	90	.proc_handler = proc_dointvec,
3e504849	91	},
f8572d8f	92	{ }
3e504849 AG	93	};
	94
	95	static struct ctl_path rds_sysctl_path[] = {
f8572d8f EB	96	{ .procname = "net", },
f8572d8f EB	97	{ .procname = "rds", },
3e504849 AG	98	{ }
	99	};
	100
	101
	102	void rds_sysctl_exit(void)
	103	{
	104	if (rds_sysctl_reg_table)
	105	unregister_sysctl_table(rds_sysctl_reg_table);
	106	}
	107
ef87b7ea	108	int rds_sysctl_init(void)
3e504849 AG	109	{
	110	rds_sysctl_reconnect_min = msecs_to_jiffies(1);
	111	rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
	112
	113	rds_sysctl_reg_table = register_sysctl_paths(rds_sysctl_path, rds_sysctl_rds_table);
8690bfa1	114	if (!rds_sysctl_reg_table)
3e504849 AG	115	return -ENOMEM;
	116	return 0;
	117	}