[linux-2.6-block.git] / net / rxrpc / sysctl.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* sysctls for configuring RxRPC operating parameters
 *
 * Copyright (C) 2014 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 */

#include <linux/sysctl.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include "ar-internal.h"

static struct ctl_table_header *rxrpc_sysctl_reg_table;
static const unsigned int four = 4;
static const unsigned int max_backlog = RXRPC_BACKLOG_MAX - 1;
static const unsigned int n_65535 = 65535;
static const unsigned int n_max_acks = 255;
static const unsigned long one_jiffy = 1;
static const unsigned long max_jiffies = MAX_JIFFY_OFFSET;
#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY
static const unsigned long max_500 = 500;
#endif

/*
 * RxRPC operating parameters.
 *
 * See Documentation/networking/rxrpc.rst and the variable definitions for more
 * information on the individual parameters.
 */
static struct ctl_table rxrpc_sysctl_table[] = {
	/* Values measured in milliseconds but used in jiffies */
	{
		.procname	= "soft_ack_delay",
		.data		= &rxrpc_soft_ack_delay,
		.maxlen		= sizeof(unsigned long),
		.mode		= 0644,
		.proc_handler	= proc_doulongvec_ms_jiffies_minmax,
		.extra1		= (void *)&one_jiffy,
		.extra2		= (void *)&max_jiffies,
	},
	{
		.procname	= "idle_ack_delay",
		.data		= &rxrpc_idle_ack_delay,
		.maxlen		= sizeof(unsigned long),
		.mode		= 0644,
		.proc_handler	= proc_doulongvec_ms_jiffies_minmax,
		.extra1		= (void *)&one_jiffy,
		.extra2		= (void *)&max_jiffies,
	},
	{
		.procname	= "idle_conn_expiry",
		.data		= &rxrpc_conn_idle_client_expiry,
		.maxlen		= sizeof(unsigned long),
		.mode		= 0644,
		.proc_handler	= proc_doulongvec_ms_jiffies_minmax,
		.extra1		= (void *)&one_jiffy,
		.extra2		= (void *)&max_jiffies,
	},
	{
		.procname	= "idle_conn_fast_expiry",
		.data		= &rxrpc_conn_idle_client_fast_expiry,
		.maxlen		= sizeof(unsigned long),
		.mode		= 0644,
		.proc_handler	= proc_doulongvec_ms_jiffies_minmax,
		.extra1		= (void *)&one_jiffy,
		.extra2		= (void *)&max_jiffies,
	},

	/* Values used in milliseconds */
#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY
	{
		.procname	= "inject_rx_delay",
		.data		= &rxrpc_inject_rx_delay,
		.maxlen		= sizeof(unsigned long),
		.mode		= 0644,
		.proc_handler	= proc_doulongvec_minmax,
		.extra1		= (void *)SYSCTL_LONG_ZERO,
		.extra2		= (void *)&max_500,
	},
#endif

	/* Non-time values */
	{
		.procname	= "reap_client_conns",
		.data		= &rxrpc_reap_client_connections,
		.maxlen		= sizeof(unsigned int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_minmax,
		.extra1		= (void *)SYSCTL_ONE,
		.extra2		= (void *)&n_65535,
	},
	{
		.procname	= "max_backlog",
		.data		= &rxrpc_max_backlog,
		.maxlen		= sizeof(unsigned int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_minmax,
		.extra1		= (void *)&four,
		.extra2		= (void *)&max_backlog,
	},
	{
		.procname	= "rx_window_size",
		.data		= &rxrpc_rx_window_size,
		.maxlen		= sizeof(unsigned int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_minmax,
		.extra1		= (void *)SYSCTL_ONE,
		.extra2		= (void *)&n_max_acks,
	},
	{
		.procname	= "rx_mtu",
		.data		= &rxrpc_rx_mtu,
		.maxlen		= sizeof(unsigned int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_minmax,
		.extra1		= (void *)SYSCTL_ONE,
		.extra2		= (void *)&n_65535,
	},
	{
		.procname	= "rx_jumbo_max",
		.data		= &rxrpc_rx_jumbo_max,
		.maxlen		= sizeof(unsigned int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_minmax,
		.extra1		= (void *)SYSCTL_ONE,
		.extra2		= (void *)&four,
	},
	{ }
};

int __init rxrpc_sysctl_init(void)
{
	rxrpc_sysctl_reg_table = register_net_sysctl(&init_net, "net/rxrpc",
						     rxrpc_sysctl_table);
	if (!rxrpc_sysctl_reg_table)
		return -ENOMEM;
	return 0;
}

void rxrpc_sysctl_exit(void)
{
	if (rxrpc_sysctl_reg_table)
		unregister_net_sysctl_table(rxrpc_sysctl_reg_table);
}
Commit	Line	Data
b4d0d230	1	// SPDX-License-Identifier: GPL-2.0-or-later
5873c083 DH	2	/* sysctls for configuring RxRPC operating parameters
	3	*
	4	* Copyright (C) 2014 Red Hat, Inc. All Rights Reserved.
	5	* Written by David Howells (dhowells@redhat.com)
5873c083 DH	6	*/
	7
	8	#include <linux/sysctl.h>
	9	#include <net/sock.h>
	10	#include <net/af_rxrpc.h>
	11	#include "ar-internal.h"
	12
	13	static struct ctl_table_header *rxrpc_sysctl_reg_table;
dad8aff7	14	static const unsigned int four = 4;
88e22159	15	static const unsigned int max_backlog = RXRPC_BACKLOG_MAX - 1;
dad8aff7	16	static const unsigned int n_65535 = 65535;
5d7edbc9	17	static const unsigned int n_max_acks = 255;
a158bdd3 DH	18	static const unsigned long one_jiffy = 1;
a158bdd3 DH	19	static const unsigned long max_jiffies = MAX_JIFFY_OFFSET;
af094824 DH	20	#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY
	21	static const unsigned long max_500 = 500;
	22	#endif
5873c083 DH	23
	24	/*
	25	* RxRPC operating parameters.
	26	*
9f72374c	27	* See Documentation/networking/rxrpc.rst and the variable definitions for more
5873c083 DH	28	* information on the individual parameters.
	29	*/
	30	static struct ctl_table rxrpc_sysctl_table[] = {
a158bdd3	31	/* Values measured in milliseconds but used in jiffies */
5873c083 DH	32	{
	33	.procname = "soft_ack_delay",
	34	.data = &rxrpc_soft_ack_delay,
a158bdd3	35	.maxlen = sizeof(unsigned long),
5873c083	36	.mode = 0644,
a158bdd3 DH	37	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
	38	.extra1 = (void *)&one_jiffy,
	39	.extra2 = (void *)&max_jiffies,
5873c083 DH	40	},
	41	{
	42	.procname = "idle_ack_delay",
	43	.data = &rxrpc_idle_ack_delay,
a158bdd3	44	.maxlen = sizeof(unsigned long),
5873c083	45	.mode = 0644,
a158bdd3 DH	46	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
	47	.extra1 = (void *)&one_jiffy,
	48	.extra2 = (void *)&max_jiffies,
5873c083	49	},
45025bce DH	50	{
	51	.procname = "idle_conn_expiry",
	52	.data = &rxrpc_conn_idle_client_expiry,
a158bdd3	53	.maxlen = sizeof(unsigned long),
45025bce	54	.mode = 0644,
a158bdd3 DH	55	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
	56	.extra1 = (void *)&one_jiffy,
	57	.extra2 = (void *)&max_jiffies,
45025bce DH	58	},
	59	{
	60	.procname = "idle_conn_fast_expiry",
	61	.data = &rxrpc_conn_idle_client_fast_expiry,
a158bdd3	62	.maxlen = sizeof(unsigned long),
45025bce	63	.mode = 0644,
a158bdd3 DH	64	.proc_handler = proc_doulongvec_ms_jiffies_minmax,
	65	.extra1 = (void *)&one_jiffy,
	66	.extra2 = (void *)&max_jiffies,
45025bce	67	},
5873c083	68
af094824 DH	69	/* Values used in milliseconds */
	70	#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY
	71	{
	72	.procname = "inject_rx_delay",
	73	.data = &rxrpc_inject_rx_delay,
	74	.maxlen = sizeof(unsigned long),
	75	.mode = 0644,
	76	.proc_handler = proc_doulongvec_minmax,
	77	.extra1 = (void *)SYSCTL_LONG_ZERO,
	78	.extra2 = (void *)&max_500,
	79	},
	80	#endif
	81
45025bce	82	/* Non-time values */
5873c083	83	{
45025bce DH	84	.procname = "reap_client_conns",
45025bce DH	85	.data = &rxrpc_reap_client_connections,
dad8aff7	86	.maxlen = sizeof(unsigned int),
5873c083 DH	87	.mode = 0644,
5873c083 DH	88	.proc_handler = proc_dointvec_minmax,
eec4844f	89	.extra1 = (void *)SYSCTL_ONE,
245500d8	90	.extra2 = (void *)&n_65535,
5873c083	91	},
0e119b41 DH	92	{
	93	.procname = "max_backlog",
	94	.data = &rxrpc_max_backlog,
	95	.maxlen = sizeof(unsigned int),
	96	.mode = 0644,
	97	.proc_handler = proc_dointvec_minmax,
	98	.extra1 = (void *)&four,
88e22159	99	.extra2 = (void *)&max_backlog,
0e119b41	100	},
817913d8 DH	101	{
	102	.procname = "rx_window_size",
	103	.data = &rxrpc_rx_window_size,
dad8aff7	104	.maxlen = sizeof(unsigned int),
817913d8 DH	105	.mode = 0644,
817913d8 DH	106	.proc_handler = proc_dointvec_minmax,
eec4844f	107	.extra1 = (void *)SYSCTL_ONE,
817913d8 DH	108	.extra2 = (void *)&n_max_acks,
	109	},
	110	{
	111	.procname = "rx_mtu",
	112	.data = &rxrpc_rx_mtu,
dad8aff7	113	.maxlen = sizeof(unsigned int),
817913d8 DH	114	.mode = 0644,
817913d8 DH	115	.proc_handler = proc_dointvec_minmax,
eec4844f	116	.extra1 = (void *)SYSCTL_ONE,
ee6fe085	117	.extra2 = (void *)&n_65535,
817913d8 DH	118	},
	119	{
	120	.procname = "rx_jumbo_max",
	121	.data = &rxrpc_rx_jumbo_max,
dad8aff7	122	.maxlen = sizeof(unsigned int),
817913d8 DH	123	.mode = 0644,
817913d8 DH	124	.proc_handler = proc_dointvec_minmax,
eec4844f	125	.extra1 = (void *)SYSCTL_ONE,
817913d8 DH	126	.extra2 = (void *)&four,
817913d8 DH	127	},
5873c083 DH	128	{ }
	129	};
	130
	131	int __init rxrpc_sysctl_init(void)
	132	{
	133	rxrpc_sysctl_reg_table = register_net_sysctl(&init_net, "net/rxrpc",
	134	rxrpc_sysctl_table);
	135	if (!rxrpc_sysctl_reg_table)
	136	return -ENOMEM;
	137	return 0;
	138	}
	139
	140	void rxrpc_sysctl_exit(void)
	141	{
	142	if (rxrpc_sysctl_reg_table)
	143	unregister_net_sysctl_table(rxrpc_sysctl_reg_table);
	144	}