summaryrefslogtreecommitdiffstats
path: root/net/rxrpc/sysctl.c
blob: 18dade4e6f9a0caa4143fcb44b7b697c9e6b2745 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
// 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 thirtytwo = 32;
static const unsigned int n_65535 = 65535;
static const unsigned int n_max_acks = RXRPC_RXTX_BUFF_SIZE - 1;
static const unsigned long one_jiffy = 1;
static const unsigned long max_jiffies = MAX_JIFFY_OFFSET;

/*
 * RxRPC operating parameters.
 *
 * See Documentation/networking/rxrpc.txt 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	= "req_ack_delay",
		.data		= &rxrpc_requested_ack_delay,
		.maxlen		= sizeof(unsigned long),
		.mode		= 0644,
		.proc_handler	= proc_doulongvec_ms_jiffies_minmax,
		.extra1		= (void *)&one_jiffy,
		.extra2		= (void *)&max_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,
	},

	/* Non-time values */
	{
		.procname	= "max_client_conns",
		.data		= &rxrpc_max_client_connections,
		.maxlen		= sizeof(unsigned int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_minmax,
		.extra1		= (void *)&rxrpc_reap_client_connections,
	},
	{
		.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 *)&rxrpc_max_client_connections,
	},
	{
		.procname	= "max_backlog",
		.data		= &rxrpc_max_backlog,
		.maxlen		= sizeof(unsigned int),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_minmax,
		.extra1		= (void *)&four,
		.extra2		= (void *)&thirtytwo,
	},
	{
		.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);
}