| David Howells | 5873c08 | 2014-02-07 18:58:44 +0000 | [diff] [blame^] | 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; |
| 18 | static const unsigned zero = 0; |
| 19 | static const unsigned one = 1; |
| 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[] = { |
| 28 | /* Values measured in milliseconds */ |
| 29 | { |
| 30 | .procname = "req_ack_delay", |
| 31 | .data = &rxrpc_requested_ack_delay, |
| 32 | .maxlen = sizeof(unsigned), |
| 33 | .mode = 0644, |
| 34 | .proc_handler = proc_dointvec_ms_jiffies, |
| 35 | .extra1 = (void *)&zero, |
| 36 | }, |
| 37 | { |
| 38 | .procname = "soft_ack_delay", |
| 39 | .data = &rxrpc_soft_ack_delay, |
| 40 | .maxlen = sizeof(unsigned), |
| 41 | .mode = 0644, |
| 42 | .proc_handler = proc_dointvec_ms_jiffies, |
| 43 | .extra1 = (void *)&one, |
| 44 | }, |
| 45 | { |
| 46 | .procname = "idle_ack_delay", |
| 47 | .data = &rxrpc_idle_ack_delay, |
| 48 | .maxlen = sizeof(unsigned), |
| 49 | .mode = 0644, |
| 50 | .proc_handler = proc_dointvec_ms_jiffies, |
| 51 | .extra1 = (void *)&one, |
| 52 | }, |
| 53 | { |
| 54 | .procname = "resend_timeout", |
| 55 | .data = &rxrpc_resend_timeout, |
| 56 | .maxlen = sizeof(unsigned), |
| 57 | .mode = 0644, |
| 58 | .proc_handler = proc_dointvec_ms_jiffies, |
| 59 | .extra1 = (void *)&one, |
| 60 | }, |
| 61 | |
| 62 | /* Values measured in seconds but used in jiffies */ |
| 63 | { |
| 64 | .procname = "max_call_lifetime", |
| 65 | .data = &rxrpc_max_call_lifetime, |
| 66 | .maxlen = sizeof(unsigned), |
| 67 | .mode = 0644, |
| 68 | .proc_handler = proc_dointvec_jiffies, |
| 69 | .extra1 = (void *)&one, |
| 70 | }, |
| 71 | { |
| 72 | .procname = "dead_call_expiry", |
| 73 | .data = &rxrpc_dead_call_expiry, |
| 74 | .maxlen = sizeof(unsigned), |
| 75 | .mode = 0644, |
| 76 | .proc_handler = proc_dointvec_jiffies, |
| 77 | .extra1 = (void *)&one, |
| 78 | }, |
| 79 | |
| 80 | /* Values measured in seconds */ |
| 81 | { |
| 82 | .procname = "connection_expiry", |
| 83 | .data = &rxrpc_connection_expiry, |
| 84 | .maxlen = sizeof(unsigned), |
| 85 | .mode = 0644, |
| 86 | .proc_handler = proc_dointvec_minmax, |
| 87 | .extra1 = (void *)&one, |
| 88 | }, |
| 89 | { |
| 90 | .procname = "transport_expiry", |
| 91 | .data = &rxrpc_transport_expiry, |
| 92 | .maxlen = sizeof(unsigned), |
| 93 | .mode = 0644, |
| 94 | .proc_handler = proc_dointvec_minmax, |
| 95 | .extra1 = (void *)&one, |
| 96 | }, |
| 97 | { } |
| 98 | }; |
| 99 | |
| 100 | int __init rxrpc_sysctl_init(void) |
| 101 | { |
| 102 | rxrpc_sysctl_reg_table = register_net_sysctl(&init_net, "net/rxrpc", |
| 103 | rxrpc_sysctl_table); |
| 104 | if (!rxrpc_sysctl_reg_table) |
| 105 | return -ENOMEM; |
| 106 | return 0; |
| 107 | } |
| 108 | |
| 109 | void rxrpc_sysctl_exit(void) |
| 110 | { |
| 111 | if (rxrpc_sysctl_reg_table) |
| 112 | unregister_net_sysctl_table(rxrpc_sysctl_reg_table); |
| 113 | } |