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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
21/*
22 * RxRPC operating parameters.
23 *
24 * See Documentation/networking/rxrpc.rst and the variable definitions for more
25 * information on the individual parameters.
26 */
27static struct ctl_table rxrpc_sysctl_table[] = {
28 /* Values measured in milliseconds but used in jiffies */
29 {
30 .procname = "soft_ack_delay",
31 .data = &rxrpc_soft_ack_delay,
32 .maxlen = sizeof(unsigned long),
33 .mode = 0644,
34 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
35 .extra1 = (void *)&one_jiffy,
36 .extra2 = (void *)&max_jiffies,
37 },
38 {
39 .procname = "idle_ack_delay",
40 .data = &rxrpc_idle_ack_delay,
41 .maxlen = sizeof(unsigned long),
42 .mode = 0644,
43 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
44 .extra1 = (void *)&one_jiffy,
45 .extra2 = (void *)&max_jiffies,
46 },
47 {
48 .procname = "idle_conn_expiry",
49 .data = &rxrpc_conn_idle_client_expiry,
50 .maxlen = sizeof(unsigned long),
51 .mode = 0644,
52 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
53 .extra1 = (void *)&one_jiffy,
54 .extra2 = (void *)&max_jiffies,
55 },
56 {
57 .procname = "idle_conn_fast_expiry",
58 .data = &rxrpc_conn_idle_client_fast_expiry,
59 .maxlen = sizeof(unsigned long),
60 .mode = 0644,
61 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
62 .extra1 = (void *)&one_jiffy,
63 .extra2 = (void *)&max_jiffies,
64 },
65
66 /* Non-time values */
67 {
68 .procname = "reap_client_conns",
69 .data = &rxrpc_reap_client_connections,
70 .maxlen = sizeof(unsigned int),
71 .mode = 0644,
72 .proc_handler = proc_dointvec_minmax,
73 .extra1 = (void *)SYSCTL_ONE,
74 .extra2 = (void *)&n_65535,
75 },
76 {
77 .procname = "max_backlog",
78 .data = &rxrpc_max_backlog,
79 .maxlen = sizeof(unsigned int),
80 .mode = 0644,
81 .proc_handler = proc_dointvec_minmax,
82 .extra1 = (void *)&four,
83 .extra2 = (void *)&max_backlog,
84 },
85 {
86 .procname = "rx_window_size",
87 .data = &rxrpc_rx_window_size,
88 .maxlen = sizeof(unsigned int),
89 .mode = 0644,
90 .proc_handler = proc_dointvec_minmax,
91 .extra1 = (void *)SYSCTL_ONE,
92 .extra2 = (void *)&n_max_acks,
93 },
94 {
95 .procname = "rx_mtu",
96 .data = &rxrpc_rx_mtu,
97 .maxlen = sizeof(unsigned int),
98 .mode = 0644,
99 .proc_handler = proc_dointvec_minmax,
100 .extra1 = (void *)SYSCTL_ONE,
101 .extra2 = (void *)&n_65535,
102 },
103 {
104 .procname = "rx_jumbo_max",
105 .data = &rxrpc_rx_jumbo_max,
106 .maxlen = sizeof(unsigned int),
107 .mode = 0644,
108 .proc_handler = proc_dointvec_minmax,
109 .extra1 = (void *)SYSCTL_ONE,
110 .extra2 = (void *)&four,
111 },
112
113 { }
114};
115
116int __init rxrpc_sysctl_init(void)
117{
118 rxrpc_sysctl_reg_table = register_net_sysctl(&init_net, "net/rxrpc",
119 rxrpc_sysctl_table);
120 if (!rxrpc_sysctl_reg_table)
121 return -ENOMEM;
122 return 0;
123}
124
125void rxrpc_sysctl_exit(void)
126{
127 if (rxrpc_sysctl_reg_table)
128 unregister_net_sysctl_table(rxrpc_sysctl_reg_table);
129}
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}