[linux-2.6-block.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[] = {
	{
		.ctl_name       = CTL_UNNUMBERED,
		.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,
	},
	{
		.ctl_name       = CTL_UNNUMBERED,
		.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,
	},
	{
		.ctl_name	= CTL_UNNUMBERED,
		.procname	= "max_unacked_packets",
		.data		= &rds_sysctl_max_unacked_packets,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = &proc_dointvec,
	},
	{
		.ctl_name	= CTL_UNNUMBERED,
		.procname	= "max_unacked_bytes",
		.data		= &rds_sysctl_max_unacked_bytes,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = &proc_dointvec,
	},
	{
		.ctl_name	= CTL_UNNUMBERED,
		.procname	= "ping_enable",
		.data		= &rds_sysctl_ping_enable,
		.maxlen         = sizeof(int),
		.mode           = 0644,
		.proc_handler   = &proc_dointvec,
	},
	{ .ctl_name = 0}
};

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


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

int __init 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 == NULL)
		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	{
	54	.ctl_name = CTL_UNNUMBERED,
	55	.procname = "reconnect_min_delay_ms",
	56	.data = &rds_sysctl_reconnect_min_jiffies,
	57	.maxlen = sizeof(unsigned long),
	58	.mode = 0644,
	59	.proc_handler = &proc_doulongvec_ms_jiffies_minmax,
	60	.extra1 = &rds_sysctl_reconnect_min,
	61	.extra2 = &rds_sysctl_reconnect_max_jiffies,
	62	},
	63	{
	64	.ctl_name = CTL_UNNUMBERED,
65	.procname = "reconnect_max_delay_ms",
66	.data = &rds_sysctl_reconnect_max_jiffies,
67	.maxlen = sizeof(unsigned long),
68	.mode = 0644,
69	.proc_handler = &proc_doulongvec_ms_jiffies_minmax,
70	.extra1 = &rds_sysctl_reconnect_min_jiffies,
71	.extra2 = &rds_sysctl_reconnect_max,
72	},
73	{
74	.ctl_name = CTL_UNNUMBERED,
75	.procname = "max_unacked_packets",
76	.data = &rds_sysctl_max_unacked_packets,
77	.maxlen = sizeof(unsigned long),
78	.mode = 0644,
79	.proc_handler = &proc_dointvec,
80	},
81	{
82	.ctl_name = CTL_UNNUMBERED,
83	.procname = "max_unacked_bytes",
84	.data = &rds_sysctl_max_unacked_bytes,
85	.maxlen = sizeof(unsigned long),
86	.mode = 0644,
87	.proc_handler = &proc_dointvec,
88	},
89	{
90	.ctl_name = CTL_UNNUMBERED,
91	.procname = "ping_enable",
92	.data = &rds_sysctl_ping_enable,
93	.maxlen = sizeof(int),
94	.mode = 0644,
95	.proc_handler = &proc_dointvec,
96	},
97	{ .ctl_name = 0}
98	};
99
100	static struct ctl_path rds_sysctl_path[] = {
101	{ .procname = "net", .ctl_name = CTL_NET, },
102	{ .procname = "rds", .ctl_name = CTL_UNNUMBERED, },
103	{ }
104	};
105
106
107	void rds_sysctl_exit(void)
108	{
109	if (rds_sysctl_reg_table)
110	unregister_sysctl_table(rds_sysctl_reg_table);
111	}
112
113	int __init rds_sysctl_init(void)
114	{
115	rds_sysctl_reconnect_min = msecs_to_jiffies(1);
116	rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
117
118	rds_sysctl_reg_table = register_sysctl_paths(rds_sysctl_path, rds_sysctl_rds_table);
119	if (rds_sysctl_reg_table == NULL)
120	return -ENOMEM;
121	return 0;
122	}