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5873c083 DH |
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 | ||
17 | static struct ctl_table_header *rxrpc_sysctl_reg_table; | |
dad8aff7 DH |
18 | static const unsigned int zero = 0; |
19 | static const unsigned int one = 1; | |
20 | static const unsigned int four = 4; | |
0e119b41 | 21 | static const unsigned int thirtytwo = 32; |
dad8aff7 | 22 | static const unsigned int n_65535 = 65535; |
75e42126 | 23 | static const unsigned int n_max_acks = RXRPC_RXTX_BUFF_SIZE - 1; |
a158bdd3 DH |
24 | static const unsigned long one_jiffy = 1; |
25 | static const unsigned long max_jiffies = MAX_JIFFY_OFFSET; | |
5873c083 DH |
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 | */ | |
33 | static struct ctl_table rxrpc_sysctl_table[] = { | |
a158bdd3 | 34 | /* Values measured in milliseconds but used in jiffies */ |
5873c083 DH |
35 | { |
36 | .procname = "req_ack_delay", | |
37 | .data = &rxrpc_requested_ack_delay, | |
a158bdd3 | 38 | .maxlen = sizeof(unsigned long), |
5873c083 | 39 | .mode = 0644, |
a158bdd3 DH |
40 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
41 | .extra1 = (void *)&one_jiffy, | |
42 | .extra2 = (void *)&max_jiffies, | |
5873c083 DH |
43 | }, |
44 | { | |
45 | .procname = "soft_ack_delay", | |
46 | .data = &rxrpc_soft_ack_delay, | |
a158bdd3 | 47 | .maxlen = sizeof(unsigned long), |
5873c083 | 48 | .mode = 0644, |
a158bdd3 DH |
49 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
50 | .extra1 = (void *)&one_jiffy, | |
51 | .extra2 = (void *)&max_jiffies, | |
5873c083 DH |
52 | }, |
53 | { | |
54 | .procname = "idle_ack_delay", | |
55 | .data = &rxrpc_idle_ack_delay, | |
a158bdd3 | 56 | .maxlen = sizeof(unsigned long), |
5873c083 | 57 | .mode = 0644, |
a158bdd3 DH |
58 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
59 | .extra1 = (void *)&one_jiffy, | |
60 | .extra2 = (void *)&max_jiffies, | |
5873c083 | 61 | }, |
45025bce DH |
62 | { |
63 | .procname = "idle_conn_expiry", | |
64 | .data = &rxrpc_conn_idle_client_expiry, | |
a158bdd3 | 65 | .maxlen = sizeof(unsigned long), |
45025bce | 66 | .mode = 0644, |
a158bdd3 DH |
67 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
68 | .extra1 = (void *)&one_jiffy, | |
69 | .extra2 = (void *)&max_jiffies, | |
45025bce DH |
70 | }, |
71 | { | |
72 | .procname = "idle_conn_fast_expiry", | |
73 | .data = &rxrpc_conn_idle_client_fast_expiry, | |
a158bdd3 | 74 | .maxlen = sizeof(unsigned long), |
45025bce | 75 | .mode = 0644, |
a158bdd3 DH |
76 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
77 | .extra1 = (void *)&one_jiffy, | |
78 | .extra2 = (void *)&max_jiffies, | |
45025bce | 79 | }, |
5873c083 | 80 | { |
a158bdd3 DH |
81 | .procname = "resend_timeout", |
82 | .data = &rxrpc_resend_timeout, | |
83 | .maxlen = sizeof(unsigned long), | |
5873c083 | 84 | .mode = 0644, |
a158bdd3 DH |
85 | .proc_handler = proc_doulongvec_ms_jiffies_minmax, |
86 | .extra1 = (void *)&one_jiffy, | |
87 | .extra2 = (void *)&max_jiffies, | |
5873c083 | 88 | }, |
5873c083 | 89 | |
45025bce DH |
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 | }, | |
5873c083 | 99 | { |
45025bce DH |
100 | .procname = "reap_client_conns", |
101 | .data = &rxrpc_reap_client_connections, | |
dad8aff7 | 102 | .maxlen = sizeof(unsigned int), |
5873c083 DH |
103 | .mode = 0644, |
104 | .proc_handler = proc_dointvec_minmax, | |
105 | .extra1 = (void *)&one, | |
45025bce | 106 | .extra2 = (void *)&rxrpc_max_client_connections, |
5873c083 | 107 | }, |
0e119b41 DH |
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 | }, | |
817913d8 DH |
117 | { |
118 | .procname = "rx_window_size", | |
119 | .data = &rxrpc_rx_window_size, | |
dad8aff7 | 120 | .maxlen = sizeof(unsigned int), |
817913d8 DH |
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, | |
dad8aff7 | 129 | .maxlen = sizeof(unsigned int), |
817913d8 DH |
130 | .mode = 0644, |
131 | .proc_handler = proc_dointvec_minmax, | |
132 | .extra1 = (void *)&one, | |
ee6fe085 | 133 | .extra2 = (void *)&n_65535, |
817913d8 DH |
134 | }, |
135 | { | |
136 | .procname = "rx_jumbo_max", | |
137 | .data = &rxrpc_rx_jumbo_max, | |
dad8aff7 | 138 | .maxlen = sizeof(unsigned int), |
817913d8 DH |
139 | .mode = 0644, |
140 | .proc_handler = proc_dointvec_minmax, | |
141 | .extra1 = (void *)&one, | |
142 | .extra2 = (void *)&four, | |
143 | }, | |
144 | ||
5873c083 DH |
145 | { } |
146 | }; | |
147 | ||
148 | int __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 | ||
157 | void rxrpc_sysctl_exit(void) | |
158 | { | |
159 | if (rxrpc_sysctl_reg_table) | |
160 | unregister_net_sysctl_table(rxrpc_sysctl_reg_table); | |
161 | } |