1 /*
2 * Copyright (c) 2006 Oracle. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 */
33 #include <linux/kernel.h>
34 #include <linux/sysctl.h>
35 #include <linux/proc_fs.h>
36
37 #include "rds.h"
38
39 static struct ctl_table_header *rds_sysctl_reg_table;
40
41 static unsigned long rds_sysctl_reconnect_min = 1;
42 static unsigned long rds_sysctl_reconnect_max = ~0UL;
43
44 unsigned long rds_sysctl_reconnect_min_jiffies;
45 unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
46
47 unsigned int rds_sysctl_max_unacked_packets = 8;
48 unsigned int rds_sysctl_max_unacked_bytes = (16 << 20);
49
50 unsigned int rds_sysctl_ping_enable = 1;
51
52 static struct ctl_table rds_sysctl_rds_table[] = {
53 {
54 .procname = "reconnect_min_delay_ms",
55 .data = &rds_sysctl_reconnect_min_jiffies,
56 .maxlen = sizeof(unsigned long),
57 .mode = 0644,
58 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
59 .extra1 = &rds_sysctl_reconnect_min,
60 .extra2 = &rds_sysctl_reconnect_max_jiffies,
61 },
62 {
63 .procname = "reconnect_max_delay_ms",
64 .data = &rds_sysctl_reconnect_max_jiffies,
65 .maxlen = sizeof(unsigned long),
66 .mode = 0644,
67 .proc_handler = proc_doulongvec_ms_jiffies_minmax,
68 .extra1 = &rds_sysctl_reconnect_min_jiffies,
69 .extra2 = &rds_sysctl_reconnect_max,
70 },
71 {
72 .procname = "max_unacked_packets",
73 .data = &rds_sysctl_max_unacked_packets,
74 .maxlen = sizeof(int),
75 .mode = 0644,
76 .proc_handler = proc_dointvec,
77 },
78 {
79 .procname = "max_unacked_bytes",
80 .data = &rds_sysctl_max_unacked_bytes,
81 .maxlen = sizeof(int),
82 .mode = 0644,
83 .proc_handler = proc_dointvec,
84 },
85 {
86 .procname = "ping_enable",
87 .data = &rds_sysctl_ping_enable,
88 .maxlen = sizeof(int),
89 .mode = 0644,
90 .proc_handler = proc_dointvec,
91 },
92 { }
93 };
94
95 void rds_sysctl_exit(void)
96 {
97 unregister_net_sysctl_table(rds_sysctl_reg_table);
98 }
99
100 int rds_sysctl_init(void)
101 {
102 rds_sysctl_reconnect_min = msecs_to_jiffies(1);
103 rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
104
105 rds_sysctl_reg_table =
106 register_net_sysctl(&init_net, "net/rds", rds_sysctl_rds_table);
107 if (!rds_sysctl_reg_table)
108 return -ENOMEM;
109 return 0;
110 }