[linux.git] / net / rds / iw_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 "iw.h"

static struct ctl_table_header *rds_iw_sysctl_hdr;

unsigned long rds_iw_sysctl_max_send_wr = RDS_IW_DEFAULT_SEND_WR;
unsigned long rds_iw_sysctl_max_recv_wr = RDS_IW_DEFAULT_RECV_WR;
unsigned long rds_iw_sysctl_max_recv_allocation = (128 * 1024 * 1024) / RDS_FRAG_SIZE;
static unsigned long rds_iw_sysctl_max_wr_min = 1;
/* hardware will fail CQ creation long before this */
static unsigned long rds_iw_sysctl_max_wr_max = (u32)~0;

unsigned long rds_iw_sysctl_max_unsig_wrs = 16;
static unsigned long rds_iw_sysctl_max_unsig_wr_min = 1;
static unsigned long rds_iw_sysctl_max_unsig_wr_max = 64;

unsigned long rds_iw_sysctl_max_unsig_bytes = (16 << 20);
static unsigned long rds_iw_sysctl_max_unsig_bytes_min = 1;
static unsigned long rds_iw_sysctl_max_unsig_bytes_max = ~0UL;

unsigned int rds_iw_sysctl_flow_control = 1;

ctl_table rds_iw_sysctl_table[] = {
	{
		.procname       = "max_send_wr",
		.data		= &rds_iw_sysctl_max_send_wr,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = proc_doulongvec_minmax,
		.extra1		= &rds_iw_sysctl_max_wr_min,
		.extra2		= &rds_iw_sysctl_max_wr_max,
	},
	{
		.procname       = "max_recv_wr",
		.data		= &rds_iw_sysctl_max_recv_wr,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = proc_doulongvec_minmax,
		.extra1		= &rds_iw_sysctl_max_wr_min,
		.extra2		= &rds_iw_sysctl_max_wr_max,
	},
	{
		.procname       = "max_unsignaled_wr",
		.data		= &rds_iw_sysctl_max_unsig_wrs,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = proc_doulongvec_minmax,
		.extra1		= &rds_iw_sysctl_max_unsig_wr_min,
		.extra2		= &rds_iw_sysctl_max_unsig_wr_max,
	},
	{
		.procname       = "max_unsignaled_bytes",
		.data		= &rds_iw_sysctl_max_unsig_bytes,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = proc_doulongvec_minmax,
		.extra1		= &rds_iw_sysctl_max_unsig_bytes_min,
		.extra2		= &rds_iw_sysctl_max_unsig_bytes_max,
	},
	{
		.procname       = "max_recv_allocation",
		.data		= &rds_iw_sysctl_max_recv_allocation,
		.maxlen         = sizeof(unsigned long),
		.mode           = 0644,
		.proc_handler   = proc_doulongvec_minmax,
	},
	{
		.procname	= "flow_control",
		.data		= &rds_iw_sysctl_flow_control,
		.maxlen		= sizeof(rds_iw_sysctl_flow_control),
		.mode		= 0644,
		.proc_handler	= proc_dointvec,
	},
	{ }
};

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

void rds_iw_sysctl_exit(void)
{
	if (rds_iw_sysctl_hdr)
		unregister_sysctl_table(rds_iw_sysctl_hdr);
}

int rds_iw_sysctl_init(void)
{
	rds_iw_sysctl_hdr = register_sysctl_paths(rds_iw_sysctl_path, rds_iw_sysctl_table);
	if (!rds_iw_sysctl_hdr)
		return -ENOMEM;
	return 0;
}
Commit	Line	Data
fcd8b7c0 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 "iw.h"
	38
	39	static struct ctl_table_header *rds_iw_sysctl_hdr;
	40
	41	unsigned long rds_iw_sysctl_max_send_wr = RDS_IW_DEFAULT_SEND_WR;
	42	unsigned long rds_iw_sysctl_max_recv_wr = RDS_IW_DEFAULT_RECV_WR;
	43	unsigned long rds_iw_sysctl_max_recv_allocation = (128 * 1024 * 1024) / RDS_FRAG_SIZE;
	44	static unsigned long rds_iw_sysctl_max_wr_min = 1;
	45	/* hardware will fail CQ creation long before this */
	46	static unsigned long rds_iw_sysctl_max_wr_max = (u32)~0;
	47
	48	unsigned long rds_iw_sysctl_max_unsig_wrs = 16;
	49	static unsigned long rds_iw_sysctl_max_unsig_wr_min = 1;
	50	static unsigned long rds_iw_sysctl_max_unsig_wr_max = 64;
	51
	52	unsigned long rds_iw_sysctl_max_unsig_bytes = (16 << 20);
	53	static unsigned long rds_iw_sysctl_max_unsig_bytes_min = 1;
	54	static unsigned long rds_iw_sysctl_max_unsig_bytes_max = ~0UL;
	55
	56	unsigned int rds_iw_sysctl_flow_control = 1;
	57
	58	ctl_table rds_iw_sysctl_table[] = {
	59	{
fcd8b7c0 AG	60	.procname = "max_send_wr",
	61	.data = &rds_iw_sysctl_max_send_wr,
	62	.maxlen = sizeof(unsigned long),
	63	.mode = 0644,
6d456111	64	.proc_handler = proc_doulongvec_minmax,
fcd8b7c0 AG	65	.extra1 = &rds_iw_sysctl_max_wr_min,
	66	.extra2 = &rds_iw_sysctl_max_wr_max,
	67	},
	68	{
fcd8b7c0 AG	69	.procname = "max_recv_wr",
	70	.data = &rds_iw_sysctl_max_recv_wr,
	71	.maxlen = sizeof(unsigned long),
	72	.mode = 0644,
6d456111	73	.proc_handler = proc_doulongvec_minmax,
fcd8b7c0 AG	74	.extra1 = &rds_iw_sysctl_max_wr_min,
	75	.extra2 = &rds_iw_sysctl_max_wr_max,
	76	},
	77	{
fcd8b7c0 AG	78	.procname = "max_unsignaled_wr",
	79	.data = &rds_iw_sysctl_max_unsig_wrs,
	80	.maxlen = sizeof(unsigned long),
	81	.mode = 0644,
6d456111	82	.proc_handler = proc_doulongvec_minmax,
fcd8b7c0 AG	83	.extra1 = &rds_iw_sysctl_max_unsig_wr_min,
	84	.extra2 = &rds_iw_sysctl_max_unsig_wr_max,
	85	},
	86	{
fcd8b7c0 AG	87	.procname = "max_unsignaled_bytes",
	88	.data = &rds_iw_sysctl_max_unsig_bytes,
	89	.maxlen = sizeof(unsigned long),
	90	.mode = 0644,
6d456111	91	.proc_handler = proc_doulongvec_minmax,
fcd8b7c0 AG	92	.extra1 = &rds_iw_sysctl_max_unsig_bytes_min,
	93	.extra2 = &rds_iw_sysctl_max_unsig_bytes_max,
	94	},
	95	{
fcd8b7c0 AG	96	.procname = "max_recv_allocation",
	97	.data = &rds_iw_sysctl_max_recv_allocation,
	98	.maxlen = sizeof(unsigned long),
	99	.mode = 0644,
6d456111	100	.proc_handler = proc_doulongvec_minmax,
fcd8b7c0 AG	101	},
fcd8b7c0 AG	102	{
fcd8b7c0 AG	103	.procname = "flow_control",
	104	.data = &rds_iw_sysctl_flow_control,
	105	.maxlen = sizeof(rds_iw_sysctl_flow_control),
	106	.mode = 0644,
6d456111	107	.proc_handler = proc_dointvec,
fcd8b7c0	108	},
f8572d8f	109	{ }
fcd8b7c0 AG	110	};
	111
	112	static struct ctl_path rds_iw_sysctl_path[] = {
f8572d8f EB	113	{ .procname = "net", },
	114	{ .procname = "rds", },
	115	{ .procname = "iw", },
fcd8b7c0 AG	116	{ }
	117	};
	118
	119	void rds_iw_sysctl_exit(void)
	120	{
	121	if (rds_iw_sysctl_hdr)
	122	unregister_sysctl_table(rds_iw_sysctl_hdr);
	123	}
	124
ef87b7ea	125	int rds_iw_sysctl_init(void)
fcd8b7c0 AG	126	{
fcd8b7c0 AG	127	rds_iw_sysctl_hdr = register_sysctl_paths(rds_iw_sysctl_path, rds_iw_sysctl_table);
8690bfa1	128	if (!rds_iw_sysctl_hdr)
fcd8b7c0 AG	129	return -ENOMEM;
	130	return 0;
	131	}