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1/* sysctls for configuring RxRPC operating parameters
2 *
3 * Copyright (C) 2014 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11
12#include <linux/sysctl.h>
13#include <net/sock.h>
14#include <net/af_rxrpc.h>
15#include "ar-internal.h"
16
17static struct ctl_table_header *rxrpc_sysctl_reg_table;
18static const unsigned zero = 0;
19static const unsigned one = 1;
20static const unsigned four = 4;
21static const unsigned n_65535 = 65535;
22static const unsigned n_max_acks = RXRPC_MAXACKS;
23
24/*
25 * RxRPC operating parameters.
26 *
27 * See Documentation/networking/rxrpc.txt and the variable definitions for more
28 * information on the individual parameters.
29 */
30static struct ctl_table rxrpc_sysctl_table[] = {
31 /* Values measured in milliseconds */
32 {
33 .procname = "req_ack_delay",
34 .data = &rxrpc_requested_ack_delay,
35 .maxlen = sizeof(unsigned),
36 .mode = 0644,
37 .proc_handler = proc_dointvec_ms_jiffies,
38 .extra1 = (void *)&zero,
39 },
40 {
41 .procname = "soft_ack_delay",
42 .data = &rxrpc_soft_ack_delay,
43 .maxlen = sizeof(unsigned),
44 .mode = 0644,
45 .proc_handler = proc_dointvec_ms_jiffies,
46 .extra1 = (void *)&one,
47 },
48 {
49 .procname = "idle_ack_delay",
50 .data = &rxrpc_idle_ack_delay,
51 .maxlen = sizeof(unsigned),
52 .mode = 0644,
53 .proc_handler = proc_dointvec_ms_jiffies,
54 .extra1 = (void *)&one,
55 },
56 {
57 .procname = "resend_timeout",
58 .data = &rxrpc_resend_timeout,
59 .maxlen = sizeof(unsigned),
60 .mode = 0644,
61 .proc_handler = proc_dointvec_ms_jiffies,
62 .extra1 = (void *)&one,
63 },
64
65 /* Values measured in seconds but used in jiffies */
66 {
67 .procname = "max_call_lifetime",
68 .data = &rxrpc_max_call_lifetime,
69 .maxlen = sizeof(unsigned),
70 .mode = 0644,
71 .proc_handler = proc_dointvec_jiffies,
72 .extra1 = (void *)&one,
73 },
74 {
75 .procname = "dead_call_expiry",
76 .data = &rxrpc_dead_call_expiry,
77 .maxlen = sizeof(unsigned),
78 .mode = 0644,
79 .proc_handler = proc_dointvec_jiffies,
80 .extra1 = (void *)&one,
81 },
82
83 /* Values measured in seconds */
84 {
85 .procname = "connection_expiry",
86 .data = &rxrpc_connection_expiry,
87 .maxlen = sizeof(unsigned),
88 .mode = 0644,
89 .proc_handler = proc_dointvec_minmax,
90 .extra1 = (void *)&one,
91 },
92 {
93 .procname = "transport_expiry",
94 .data = &rxrpc_transport_expiry,
95 .maxlen = sizeof(unsigned),
96 .mode = 0644,
97 .proc_handler = proc_dointvec_minmax,
98 .extra1 = (void *)&one,
99 },
100
101 /* Non-time values */
102 {
103 .procname = "rx_window_size",
104 .data = &rxrpc_rx_window_size,
105 .maxlen = sizeof(unsigned),
106 .mode = 0644,
107 .proc_handler = proc_dointvec_minmax,
108 .extra1 = (void *)&one,
109 .extra2 = (void *)&n_max_acks,
110 },
111 {
112 .procname = "rx_mtu",
113 .data = &rxrpc_rx_mtu,
114 .maxlen = sizeof(unsigned),
115 .mode = 0644,
116 .proc_handler = proc_dointvec_minmax,
117 .extra1 = (void *)&one,
118 .extra1 = (void *)&n_65535,
119 },
120 {
121 .procname = "rx_jumbo_max",
122 .data = &rxrpc_rx_jumbo_max,
123 .maxlen = sizeof(unsigned),
124 .mode = 0644,
125 .proc_handler = proc_dointvec_minmax,
126 .extra1 = (void *)&one,
127 .extra2 = (void *)&four,
128 },
129
130 { }
131};
132
133int __init rxrpc_sysctl_init(void)
134{
135 rxrpc_sysctl_reg_table = register_net_sysctl(&init_net, "net/rxrpc",
136 rxrpc_sysctl_table);
137 if (!rxrpc_sysctl_reg_table)
138 return -ENOMEM;
139 return 0;
140}
141
142void rxrpc_sysctl_exit(void)
143{
144 if (rxrpc_sysctl_reg_table)
145 unregister_net_sysctl_table(rxrpc_sysctl_reg_table);
146}
1// SPDX-License-Identifier: GPL-2.0-or-later
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)
6 */
7
8#include <linux/sysctl.h>
9#include <net/sock.h>
10#include <net/af_rxrpc.h>
11#include "ar-internal.h"
12
13static struct ctl_table_header *rxrpc_sysctl_reg_table;
14static const unsigned int four = 4;
15static const unsigned int max_backlog = RXRPC_BACKLOG_MAX - 1;
16static const unsigned int n_65535 = 65535;
17static const unsigned int n_max_acks = 255;
18static const unsigned long one_jiffy = 1;
19static const unsigned long max_jiffies = MAX_JIFFY_OFFSET;
20#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY
21static const unsigned long max_500 = 500;
22#endif
23
24/*
25 * RxRPC operating parameters.
26 *
27 * See Documentation/networking/rxrpc.rst and the variable definitions for more
28 * information on the individual parameters.
29 */
30static struct ctl_table rxrpc_sysctl_table[] = {
31 /* Values measured in milliseconds but used in jiffies */
32 {
33 .procname = "soft_ack_delay",
34 .data = &rxrpc_soft_ack_delay,
35 .maxlen = sizeof(unsigned long),
36 .mode = 0644,
37 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
38 .extra1 = (void *)&one_jiffy,
39 .extra2 = (void *)&max_jiffies,
40 },
41 {
42 .procname = "idle_ack_delay",
43 .data = &rxrpc_idle_ack_delay,
44 .maxlen = sizeof(unsigned long),
45 .mode = 0644,
46 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
47 .extra1 = (void *)&one_jiffy,
48 .extra2 = (void *)&max_jiffies,
49 },
50 {
51 .procname = "idle_conn_expiry",
52 .data = &rxrpc_conn_idle_client_expiry,
53 .maxlen = sizeof(unsigned long),
54 .mode = 0644,
55 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
56 .extra1 = (void *)&one_jiffy,
57 .extra2 = (void *)&max_jiffies,
58 },
59 {
60 .procname = "idle_conn_fast_expiry",
61 .data = &rxrpc_conn_idle_client_fast_expiry,
62 .maxlen = sizeof(unsigned long),
63 .mode = 0644,
64 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
65 .extra1 = (void *)&one_jiffy,
66 .extra2 = (void *)&max_jiffies,
67 },
68
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
82 /* Non-time values */
83 {
84 .procname = "reap_client_conns",
85 .data = &rxrpc_reap_client_connections,
86 .maxlen = sizeof(unsigned int),
87 .mode = 0644,
88 .proc_handler = proc_dointvec_minmax,
89 .extra1 = (void *)SYSCTL_ONE,
90 .extra2 = (void *)&n_65535,
91 },
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,
99 .extra2 = (void *)&max_backlog,
100 },
101 {
102 .procname = "rx_window_size",
103 .data = &rxrpc_rx_window_size,
104 .maxlen = sizeof(unsigned int),
105 .mode = 0644,
106 .proc_handler = proc_dointvec_minmax,
107 .extra1 = (void *)SYSCTL_ONE,
108 .extra2 = (void *)&n_max_acks,
109 },
110 {
111 .procname = "rx_mtu",
112 .data = &rxrpc_rx_mtu,
113 .maxlen = sizeof(unsigned int),
114 .mode = 0644,
115 .proc_handler = proc_dointvec_minmax,
116 .extra1 = (void *)SYSCTL_ONE,
117 .extra2 = (void *)&n_65535,
118 },
119 {
120 .procname = "rx_jumbo_max",
121 .data = &rxrpc_rx_jumbo_max,
122 .maxlen = sizeof(unsigned int),
123 .mode = 0644,
124 .proc_handler = proc_dointvec_minmax,
125 .extra1 = (void *)SYSCTL_ONE,
126 .extra2 = (void *)&four,
127 },
128 { }
129};
130
131int __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
140void rxrpc_sysctl_exit(void)
141{
142 if (rxrpc_sysctl_reg_table)
143 unregister_net_sysctl_table(rxrpc_sysctl_reg_table);
144}