145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* sysctls for configuring RxRPC operating parameters
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*
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* Copyright (C) 2014 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*/
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#include <linux/sysctl.h>
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#include <net/sock.h>
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#include <net/af_rxrpc.h>
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#include "ar-internal.h"
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static struct ctl_table_header *rxrpc_sysctl_reg_table;
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static const unsigned int four = 4;
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static const unsigned int max_backlog = RXRPC_BACKLOG_MAX - 1;
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static const unsigned int n_65535 = 65535;
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static const unsigned int n_max_acks = 255;
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static const unsigned long one_jiffy = 1;
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static const unsigned long max_jiffies = MAX_JIFFY_OFFSET;
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#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY
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static const unsigned long max_500 = 500;
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#endif
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/*
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* RxRPC operating parameters.
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*
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* See Documentation/networking/rxrpc.rst and the variable definitions for more
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* information on the individual parameters.
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*/
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static struct ctl_table rxrpc_sysctl_table[] = {
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/* Values measured in milliseconds but used in jiffies */
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{
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.procname = "soft_ack_delay",
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.data = &rxrpc_soft_ack_delay,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = proc_doulongvec_ms_jiffies_minmax,
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.extra1 = (void *)&one_jiffy,
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.extra2 = (void *)&max_jiffies,
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},
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{
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.procname = "idle_ack_delay",
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.data = &rxrpc_idle_ack_delay,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = proc_doulongvec_ms_jiffies_minmax,
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.extra1 = (void *)&one_jiffy,
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.extra2 = (void *)&max_jiffies,
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},
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{
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.procname = "idle_conn_expiry",
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.data = &rxrpc_conn_idle_client_expiry,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = proc_doulongvec_ms_jiffies_minmax,
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.extra1 = (void *)&one_jiffy,
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.extra2 = (void *)&max_jiffies,
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},
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{
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.procname = "idle_conn_fast_expiry",
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.data = &rxrpc_conn_idle_client_fast_expiry,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = proc_doulongvec_ms_jiffies_minmax,
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.extra1 = (void *)&one_jiffy,
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.extra2 = (void *)&max_jiffies,
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},
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/* Values used in milliseconds */
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#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY
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{
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.procname = "inject_rx_delay",
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.data = &rxrpc_inject_rx_delay,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = proc_doulongvec_minmax,
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.extra1 = (void *)SYSCTL_LONG_ZERO,
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.extra2 = (void *)&max_500,
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},
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#endif
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/* Non-time values */
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{
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.procname = "reap_client_conns",
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.data = &rxrpc_reap_client_connections,
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.maxlen = sizeof(unsigned int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = (void *)SYSCTL_ONE,
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.extra2 = (void *)&n_65535,
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},
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{
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.procname = "max_backlog",
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.data = &rxrpc_max_backlog,
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.maxlen = sizeof(unsigned int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = (void *)&four,
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.extra2 = (void *)&max_backlog,
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},
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{
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.procname = "rx_window_size",
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.data = &rxrpc_rx_window_size,
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.maxlen = sizeof(unsigned int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = (void *)SYSCTL_ONE,
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.extra2 = (void *)&n_max_acks,
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},
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{
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.procname = "rx_mtu",
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.data = &rxrpc_rx_mtu,
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.maxlen = sizeof(unsigned int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = (void *)SYSCTL_ONE,
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.extra2 = (void *)&n_65535,
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},
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{
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.procname = "rx_jumbo_max",
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.data = &rxrpc_rx_jumbo_max,
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.maxlen = sizeof(unsigned int),
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.mode = 0644,
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.proc_handler = proc_dointvec_minmax,
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.extra1 = (void *)SYSCTL_ONE,
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.extra2 = (void *)&four,
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},
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{ }
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};
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int __init rxrpc_sysctl_init(void)
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{
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rxrpc_sysctl_reg_table = register_net_sysctl(&init_net, "net/rxrpc",
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rxrpc_sysctl_table);
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if (!rxrpc_sysctl_reg_table)
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return -ENOMEM;
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return 0;
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}
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void rxrpc_sysctl_exit(void)
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{
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if (rxrpc_sysctl_reg_table)
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unregister_net_sysctl_table(rxrpc_sysctl_reg_table);
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}
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