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+/*
+ * Copyright (c) 2006 Oracle. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/sysctl.h>
+#include <linux/proc_fs.h>
+
+#include "rds.h"
+
+static struct ctl_table_header *rds_sysctl_reg_table;
+
+static unsigned long rds_sysctl_reconnect_min = 1;
+static unsigned long rds_sysctl_reconnect_max = ~0UL;
+
+unsigned long rds_sysctl_reconnect_min_jiffies;
+unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
+
+unsigned int rds_sysctl_max_unacked_packets = 8;
+unsigned int rds_sysctl_max_unacked_bytes = (16 << 20);
+
+unsigned int rds_sysctl_ping_enable = 1;
+
+unsigned long rds_sysctl_trace_flags = 0;
+unsigned int rds_sysctl_trace_level = 0;
+
+/*
+ * These can change over time until they're official. Until that time we'll
+ * give apps a way to figure out what the values are in a given machine.
+ */
+static int rds_sysctl_pf_rds = PF_RDS;
+static int rds_sysctl_sol_rds = SOL_RDS;
+
+static ctl_table rds_sysctl_rds_table[] = {
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "reconnect_min_delay_ms",
+ .data = &rds_sysctl_reconnect_min_jiffies,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
+ .extra1 = &rds_sysctl_reconnect_min,
+ .extra2 = &rds_sysctl_reconnect_max_jiffies,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "reconnect_max_delay_ms",
+ .data = &rds_sysctl_reconnect_max_jiffies,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
+ .extra1 = &rds_sysctl_reconnect_min_jiffies,
+ .extra2 = &rds_sysctl_reconnect_max,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "pf_rds",
+ .data = &rds_sysctl_pf_rds,
+ .maxlen = sizeof(int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "sol_rds",
+ .data = &rds_sysctl_sol_rds,
+ .maxlen = sizeof(int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "max_unacked_packets",
+ .data = &rds_sysctl_max_unacked_packets,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "max_unacked_bytes",
+ .data = &rds_sysctl_max_unacked_bytes,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "ping_enable",
+ .data = &rds_sysctl_ping_enable,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "trace_flags",
+ .data = &rds_sysctl_trace_flags,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
+ .procname = "trace_level",
+ .data = &rds_sysctl_trace_level,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+ { .ctl_name = 0}
+};
+
+static struct ctl_path rds_sysctl_path[] = {
+ { .procname = "net", .ctl_name = CTL_NET, },
+ { .procname = "rds", .ctl_name = CTL_UNNUMBERED, },
+ { }
+};
+
+
+void rds_sysctl_exit(void)
+{
+ if (rds_sysctl_reg_table)
+ unregister_sysctl_table(rds_sysctl_reg_table);
+}
+
+int __init rds_sysctl_init(void)
+{
+ rds_sysctl_reconnect_min = msecs_to_jiffies(1);
+ rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
+
+ rds_sysctl_reg_table = register_sysctl_paths(rds_sysctl_path, rds_sysctl_rds_table);
+ if (rds_sysctl_reg_table == NULL)
+ return -ENOMEM;
+ return 0;
+}
In addition to some tunable parameters, we also make protocol # available here, since until accepted in upstream we do not have a fixed number assigned. This can be removed once upstream. Signed-off-by: Andy Grover <andy.grover@oracle.com> --- drivers/infiniband/ulp/rds/sysctl.c | 164 +++++++++++++++++++++++++++++++++++ 1 files changed, 164 insertions(+), 0 deletions(-) create mode 100644 drivers/infiniband/ulp/rds/sysctl.c