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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; |
0e119b41 | 15 | static const unsigned int thirtytwo = 32; |
dad8aff7 | 16 | static const unsigned int n_65535 = 65535; |
75e42126 | 17 | static const unsigned int n_max_acks = RXRPC_RXTX_BUFF_SIZE - 1; |
a158bdd3 DH |
18 | static const unsigned long one_jiffy = 1; |
19 | static const unsigned long max_jiffies = MAX_JIFFY_OFFSET; | |
5873c083 DH |
20 | |
21 | /* | |
22 | * RxRPC operating parameters. | |
23 | * | |
24 | * See Documentation/networking/rxrpc.txt and the variable definitions for more | |
25 | * information on the individual parameters. | |
26 | */ | |
27 | static struct ctl_table rxrpc_sysctl_table[] = { | |
a158bdd3 | 28 | /* Values measured in milliseconds but used in jiffies */ |
5873c083 DH |
29 | { |
30 | .procname = "req_ack_delay", | |
31 | .data = &rxrpc_requested_ack_delay, | |
a158bdd3 | 32 | .maxlen = sizeof(unsigned long), |
5873c083 | 33 | .mode = 0644, |
a158bdd3 DH |
34 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
35 | .extra1 = (void *)&one_jiffy, | |
36 | .extra2 = (void *)&max_jiffies, | |
5873c083 DH |
37 | }, |
38 | { | |
39 | .procname = "soft_ack_delay", | |
40 | .data = &rxrpc_soft_ack_delay, | |
a158bdd3 | 41 | .maxlen = sizeof(unsigned long), |
5873c083 | 42 | .mode = 0644, |
a158bdd3 DH |
43 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
44 | .extra1 = (void *)&one_jiffy, | |
45 | .extra2 = (void *)&max_jiffies, | |
5873c083 DH |
46 | }, |
47 | { | |
48 | .procname = "idle_ack_delay", | |
49 | .data = &rxrpc_idle_ack_delay, | |
a158bdd3 | 50 | .maxlen = sizeof(unsigned long), |
5873c083 | 51 | .mode = 0644, |
a158bdd3 DH |
52 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
53 | .extra1 = (void *)&one_jiffy, | |
54 | .extra2 = (void *)&max_jiffies, | |
5873c083 | 55 | }, |
45025bce DH |
56 | { |
57 | .procname = "idle_conn_expiry", | |
58 | .data = &rxrpc_conn_idle_client_expiry, | |
a158bdd3 | 59 | .maxlen = sizeof(unsigned long), |
45025bce | 60 | .mode = 0644, |
a158bdd3 DH |
61 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
62 | .extra1 = (void *)&one_jiffy, | |
63 | .extra2 = (void *)&max_jiffies, | |
45025bce DH |
64 | }, |
65 | { | |
66 | .procname = "idle_conn_fast_expiry", | |
67 | .data = &rxrpc_conn_idle_client_fast_expiry, | |
a158bdd3 | 68 | .maxlen = sizeof(unsigned long), |
45025bce | 69 | .mode = 0644, |
a158bdd3 DH |
70 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
71 | .extra1 = (void *)&one_jiffy, | |
72 | .extra2 = (void *)&max_jiffies, | |
45025bce | 73 | }, |
5873c083 | 74 | { |
a158bdd3 DH |
75 | .procname = "resend_timeout", |
76 | .data = &rxrpc_resend_timeout, | |
77 | .maxlen = sizeof(unsigned long), | |
5873c083 | 78 | .mode = 0644, |
a158bdd3 DH |
79 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
80 | .extra1 = (void *)&one_jiffy, | |
81 | .extra2 = (void *)&max_jiffies, | |
5873c083 | 82 | }, |
5873c083 | 83 | |
45025bce DH |
84 | /* Non-time values */ |
85 | { | |
86 | .procname = "max_client_conns", | |
87 | .data = &rxrpc_max_client_connections, | |
88 | .maxlen = sizeof(unsigned int), | |
89 | .mode = 0644, | |
90 | .proc_handler = proc_dointvec_minmax, | |
91 | .extra1 = (void *)&rxrpc_reap_client_connections, | |
92 | }, | |
5873c083 | 93 | { |
45025bce DH |
94 | .procname = "reap_client_conns", |
95 | .data = &rxrpc_reap_client_connections, | |
dad8aff7 | 96 | .maxlen = sizeof(unsigned int), |
5873c083 DH |
97 | .mode = 0644, |
98 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 99 | .extra1 = (void *)SYSCTL_ONE, |
45025bce | 100 | .extra2 = (void *)&rxrpc_max_client_connections, |
5873c083 | 101 | }, |
0e119b41 DH |
102 | { |
103 | .procname = "max_backlog", | |
104 | .data = &rxrpc_max_backlog, | |
105 | .maxlen = sizeof(unsigned int), | |
106 | .mode = 0644, | |
107 | .proc_handler = proc_dointvec_minmax, | |
108 | .extra1 = (void *)&four, | |
109 | .extra2 = (void *)&thirtytwo, | |
110 | }, | |
817913d8 DH |
111 | { |
112 | .procname = "rx_window_size", | |
113 | .data = &rxrpc_rx_window_size, | |
dad8aff7 | 114 | .maxlen = sizeof(unsigned int), |
817913d8 DH |
115 | .mode = 0644, |
116 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 117 | .extra1 = (void *)SYSCTL_ONE, |
817913d8 DH |
118 | .extra2 = (void *)&n_max_acks, |
119 | }, | |
120 | { | |
121 | .procname = "rx_mtu", | |
122 | .data = &rxrpc_rx_mtu, | |
dad8aff7 | 123 | .maxlen = sizeof(unsigned int), |
817913d8 DH |
124 | .mode = 0644, |
125 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 126 | .extra1 = (void *)SYSCTL_ONE, |
ee6fe085 | 127 | .extra2 = (void *)&n_65535, |
817913d8 DH |
128 | }, |
129 | { | |
130 | .procname = "rx_jumbo_max", | |
131 | .data = &rxrpc_rx_jumbo_max, | |
dad8aff7 | 132 | .maxlen = sizeof(unsigned int), |
817913d8 DH |
133 | .mode = 0644, |
134 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 135 | .extra1 = (void *)SYSCTL_ONE, |
817913d8 DH |
136 | .extra2 = (void *)&four, |
137 | }, | |
138 | ||
5873c083 DH |
139 | { } |
140 | }; | |
141 | ||
142 | int __init rxrpc_sysctl_init(void) | |
143 | { | |
144 | rxrpc_sysctl_reg_table = register_net_sysctl(&init_net, "net/rxrpc", | |
145 | rxrpc_sysctl_table); | |
146 | if (!rxrpc_sysctl_reg_table) | |
147 | return -ENOMEM; | |
148 | return 0; | |
149 | } | |
150 | ||
151 | void rxrpc_sysctl_exit(void) | |
152 | { | |
153 | if (rxrpc_sysctl_reg_table) | |
154 | unregister_net_sysctl_table(rxrpc_sysctl_reg_table); | |
155 | } |