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138 lines
3.6 KiB
138 lines
3.6 KiB
// 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 ([email protected]) |
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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 thirtytwo = 32; |
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static const unsigned int n_65535 = 65535; |
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static const unsigned int n_max_acks = RXRPC_RXTX_BUFF_SIZE - 1; |
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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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/* |
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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 = "req_ack_delay", |
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.data = &rxrpc_requested_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 = "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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/* 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 *)&thirtytwo, |
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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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