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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148// SPDX-License-Identifier: GPL-2.0-or-later/* sysctls for configuring RxRPC operating parameters * * Copyright (C) 2014 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */
#include <linux/sysctl.h>#include <net/sock.h>#include <net/af_rxrpc.h>#include "ar-internal.h"
static struct ctl_table_header *rxrpc_sysctl_reg_table;static const unsigned int rxrpc_rx_mtu_min = 500;static const unsigned int rxrpc_jumbo_max = RXRPC_MAX_NR_JUMBO;static const unsigned int four = 4;static const unsigned int max_backlog = RXRPC_BACKLOG_MAX - 1;static const unsigned int n_65535 = 65535;static const unsigned int n_max_acks = 255;static const unsigned long one_ms = 1;static const unsigned long max_ms = 1000;static const unsigned long one_jiffy = 1;static const unsigned long max_jiffies = MAX_JIFFY_OFFSET;#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAYstatic const unsigned long max_500 = 500;#endif
/* * RxRPC operating parameters. * * See Documentation/networking/rxrpc.rst and the variable definitions for more * information on the individual parameters. */static struct ctl_table rxrpc_sysctl_table[] = { /* Values measured in milliseconds */ { .procname = "soft_ack_delay", .data = &rxrpc_soft_ack_delay, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = proc_doulongvec_minmax, .extra1 = (void *)&one_ms, .extra2 = (void *)&max_ms, }, { .procname = "idle_ack_delay", .data = &rxrpc_idle_ack_delay, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = proc_doulongvec_minmax, .extra1 = (void *)&one_ms, .extra2 = (void *)&max_ms, }, { .procname = "idle_conn_expiry", .data = &rxrpc_conn_idle_client_expiry, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = proc_doulongvec_ms_jiffies_minmax, .extra1 = (void *)&one_jiffy, .extra2 = (void *)&max_jiffies, }, { .procname = "idle_conn_fast_expiry", .data = &rxrpc_conn_idle_client_fast_expiry, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = proc_doulongvec_ms_jiffies_minmax, .extra1 = (void *)&one_jiffy, .extra2 = (void *)&max_jiffies, },
/* Values used in milliseconds */#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY { .procname = "inject_rx_delay", .data = &rxrpc_inject_rx_delay, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = proc_doulongvec_minmax, .extra1 = (void *)SYSCTL_LONG_ZERO, .extra2 = (void *)&max_500, },#endif
/* Non-time values */ { .procname = "reap_client_conns", .data = &rxrpc_reap_client_connections, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = (void *)SYSCTL_ONE, .extra2 = (void *)&n_65535, }, { .procname = "max_backlog", .data = &rxrpc_max_backlog, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = (void *)&four, .extra2 = (void *)&max_backlog, }, { .procname = "rx_window_size", .data = &rxrpc_rx_window_size, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = (void *)SYSCTL_ONE, .extra2 = (void *)&n_max_acks, }, { .procname = "rx_mtu", .data = &rxrpc_rx_mtu, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = (void *)&rxrpc_rx_mtu_min, .extra2 = (void *)&n_65535, }, { .procname = "rx_jumbo_max", .data = &rxrpc_rx_jumbo_max, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = (void *)SYSCTL_ONE, .extra2 = (void *)&rxrpc_jumbo_max, },};
int __init rxrpc_sysctl_init(void){ rxrpc_sysctl_reg_table = register_net_sysctl(&init_net, "net/rxrpc", rxrpc_sysctl_table); if (!rxrpc_sysctl_reg_table) return -ENOMEM; return 0;}
void rxrpc_sysctl_exit(void){ if (rxrpc_sysctl_reg_table) unregister_net_sysctl_table(rxrpc_sysctl_reg_table);}