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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 int zero = 0;
19static const unsigned int one = 1;
20static const unsigned int four = 4;
21static const unsigned int thirtytwo = 32;
22static const unsigned int n_65535 = 65535;
23static const unsigned int n_max_acks = RXRPC_RXTX_BUFF_SIZE - 1;
24static const unsigned long one_jiffy = 1;
25static const unsigned long max_jiffies = MAX_JIFFY_OFFSET;
26
27/*
28 * RxRPC operating parameters.
29 *
30 * See Documentation/networking/rxrpc.txt and the variable definitions for more
31 * information on the individual parameters.
32 */
33static struct ctl_table rxrpc_sysctl_table[] = {
34 /* Values measured in milliseconds but used in jiffies */
35 {
36 .procname = "req_ack_delay",
37 .data = &rxrpc_requested_ack_delay,
38 .maxlen = sizeof(unsigned long),
39 .mode = 0644,
40 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
41 .extra1 = (void *)&one_jiffy,
42 .extra2 = (void *)&max_jiffies,
43 },
44 {
45 .procname = "soft_ack_delay",
46 .data = &rxrpc_soft_ack_delay,
47 .maxlen = sizeof(unsigned long),
48 .mode = 0644,
49 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
50 .extra1 = (void *)&one_jiffy,
51 .extra2 = (void *)&max_jiffies,
52 },
53 {
54 .procname = "idle_ack_delay",
55 .data = &rxrpc_idle_ack_delay,
56 .maxlen = sizeof(unsigned long),
57 .mode = 0644,
58 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
59 .extra1 = (void *)&one_jiffy,
60 .extra2 = (void *)&max_jiffies,
61 },
62 {
63 .procname = "idle_conn_expiry",
64 .data = &rxrpc_conn_idle_client_expiry,
65 .maxlen = sizeof(unsigned long),
66 .mode = 0644,
67 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
68 .extra1 = (void *)&one_jiffy,
69 .extra2 = (void *)&max_jiffies,
70 },
71 {
72 .procname = "idle_conn_fast_expiry",
73 .data = &rxrpc_conn_idle_client_fast_expiry,
74 .maxlen = sizeof(unsigned long),
75 .mode = 0644,
76 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
77 .extra1 = (void *)&one_jiffy,
78 .extra2 = (void *)&max_jiffies,
79 },
80 {
81 .procname = "resend_timeout",
82 .data = &rxrpc_resend_timeout,
83 .maxlen = sizeof(unsigned long),
84 .mode = 0644,
85 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
86 .extra1 = (void *)&one_jiffy,
87 .extra2 = (void *)&max_jiffies,
88 },
89
90 /* Non-time values */
91 {
92 .procname = "max_client_conns",
93 .data = &rxrpc_max_client_connections,
94 .maxlen = sizeof(unsigned int),
95 .mode = 0644,
96 .proc_handler = proc_dointvec_minmax,
97 .extra1 = (void *)&rxrpc_reap_client_connections,
98 },
99 {
100 .procname = "reap_client_conns",
101 .data = &rxrpc_reap_client_connections,
102 .maxlen = sizeof(unsigned int),
103 .mode = 0644,
104 .proc_handler = proc_dointvec_minmax,
105 .extra1 = (void *)&one,
106 .extra2 = (void *)&rxrpc_max_client_connections,
107 },
108 {
109 .procname = "max_backlog",
110 .data = &rxrpc_max_backlog,
111 .maxlen = sizeof(unsigned int),
112 .mode = 0644,
113 .proc_handler = proc_dointvec_minmax,
114 .extra1 = (void *)&four,
115 .extra2 = (void *)&thirtytwo,
116 },
117 {
118 .procname = "rx_window_size",
119 .data = &rxrpc_rx_window_size,
120 .maxlen = sizeof(unsigned int),
121 .mode = 0644,
122 .proc_handler = proc_dointvec_minmax,
123 .extra1 = (void *)&one,
124 .extra2 = (void *)&n_max_acks,
125 },
126 {
127 .procname = "rx_mtu",
128 .data = &rxrpc_rx_mtu,
129 .maxlen = sizeof(unsigned int),
130 .mode = 0644,
131 .proc_handler = proc_dointvec_minmax,
132 .extra1 = (void *)&one,
133 .extra2 = (void *)&n_65535,
134 },
135 {
136 .procname = "rx_jumbo_max",
137 .data = &rxrpc_rx_jumbo_max,
138 .maxlen = sizeof(unsigned int),
139 .mode = 0644,
140 .proc_handler = proc_dointvec_minmax,
141 .extra1 = (void *)&one,
142 .extra2 = (void *)&four,
143 },
144
145 { }
146};
147
148int __init rxrpc_sysctl_init(void)
149{
150 rxrpc_sysctl_reg_table = register_net_sysctl(&init_net, "net/rxrpc",
151 rxrpc_sysctl_table);
152 if (!rxrpc_sysctl_reg_table)
153 return -ENOMEM;
154 return 0;
155}
156
157void rxrpc_sysctl_exit(void)
158{
159 if (rxrpc_sysctl_reg_table)
160 unregister_net_sysctl_table(rxrpc_sysctl_reg_table);
161}