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-rw-r--r--net/rxrpc/sysctl.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/net/rxrpc/sysctl.c b/net/rxrpc/sysctl.c
new file mode 100644
index 000000000..50a98a910
--- /dev/null
+++ b/net/rxrpc/sysctl.c
@@ -0,0 +1,146 @@
+/* sysctls for configuring RxRPC operating parameters
+ *
+ * Copyright (C) 2014 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#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 zero = 0;
+static const unsigned one = 1;
+static const unsigned four = 4;
+static const unsigned n_65535 = 65535;
+static const unsigned n_max_acks = RXRPC_MAXACKS;
+
+/*
+ * RxRPC operating parameters.
+ *
+ * See Documentation/networking/rxrpc.txt and the variable definitions for more
+ * information on the individual parameters.
+ */
+static struct ctl_table rxrpc_sysctl_table[] = {
+ /* Values measured in milliseconds */
+ {
+ .procname = "req_ack_delay",
+ .data = &rxrpc_requested_ack_delay,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_ms_jiffies,
+ .extra1 = (void *)&zero,
+ },
+ {
+ .procname = "soft_ack_delay",
+ .data = &rxrpc_soft_ack_delay,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_ms_jiffies,
+ .extra1 = (void *)&one,
+ },
+ {
+ .procname = "idle_ack_delay",
+ .data = &rxrpc_idle_ack_delay,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_ms_jiffies,
+ .extra1 = (void *)&one,
+ },
+ {
+ .procname = "resend_timeout",
+ .data = &rxrpc_resend_timeout,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_ms_jiffies,
+ .extra1 = (void *)&one,
+ },
+
+ /* Values measured in seconds but used in jiffies */
+ {
+ .procname = "max_call_lifetime",
+ .data = &rxrpc_max_call_lifetime,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
+ .extra1 = (void *)&one,
+ },
+ {
+ .procname = "dead_call_expiry",
+ .data = &rxrpc_dead_call_expiry,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
+ .extra1 = (void *)&one,
+ },
+
+ /* Values measured in seconds */
+ {
+ .procname = "connection_expiry",
+ .data = &rxrpc_connection_expiry,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = (void *)&one,
+ },
+ {
+ .procname = "transport_expiry",
+ .data = &rxrpc_transport_expiry,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = (void *)&one,
+ },
+
+ /* Non-time values */
+ {
+ .procname = "rx_window_size",
+ .data = &rxrpc_rx_window_size,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = (void *)&one,
+ .extra2 = (void *)&n_max_acks,
+ },
+ {
+ .procname = "rx_mtu",
+ .data = &rxrpc_rx_mtu,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = (void *)&one,
+ .extra1 = (void *)&n_65535,
+ },
+ {
+ .procname = "rx_jumbo_max",
+ .data = &rxrpc_rx_jumbo_max,
+ .maxlen = sizeof(unsigned),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = (void *)&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);
+}