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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | // 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 four = 4; static const unsigned int thirtytwo = 32; static const unsigned int n_65535 = 65535; static const unsigned int n_max_acks = RXRPC_RXTX_BUFF_SIZE - 1; static const unsigned long one_jiffy = 1; static const unsigned long max_jiffies = MAX_JIFFY_OFFSET; /* * 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 but used in jiffies */ { .procname = "req_ack_delay", .data = &rxrpc_requested_ack_delay, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = proc_doulongvec_ms_jiffies_minmax, .extra1 = (void *)&one_jiffy, .extra2 = (void *)&max_jiffies, }, { .procname = "soft_ack_delay", .data = &rxrpc_soft_ack_delay, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = proc_doulongvec_ms_jiffies_minmax, .extra1 = (void *)&one_jiffy, .extra2 = (void *)&max_jiffies, }, { .procname = "idle_ack_delay", .data = &rxrpc_idle_ack_delay, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = proc_doulongvec_ms_jiffies_minmax, .extra1 = (void *)&one_jiffy, .extra2 = (void *)&max_jiffies, }, { .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, }, /* 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 *)&thirtytwo, }, { .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 *)SYSCTL_ONE, .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 *)&four, }, { } }; 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); } |