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-rw-r--r--net/rxrpc/sysctl.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/net/rxrpc/sysctl.c b/net/rxrpc/sysctl.c
new file mode 100644
index 0000000000..ecaeb4ecfb
--- /dev/null
+++ b/net/rxrpc/sysctl.c
@@ -0,0 +1,144 @@
+// 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 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_jiffy = 1;
+static const unsigned long max_jiffies = MAX_JIFFY_OFFSET;
+#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY
+static 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 but used in 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,
+ },
+
+ /* 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 *)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);
+}