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authorAndy Grover <andy.grover@oracle.com>2009-02-24 10:30:25 -0500
committerDavid S. Miller <davem@davemloft.net>2009-02-27 02:39:26 -0500
commit3e5048495c8569bfdd552750e0315973c61e7c93 (patch)
tree92482339b7aa3ea76e3c44e8e417ab6afebae662 /net/rds
parent13796bf9edc9d2008cfaa3ebea89312ced0d44a9 (diff)
RDS: sysctls
RDS exposes a few tunable parameters via sysctls. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds')
-rw-r--r--net/rds/sysctl.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/net/rds/sysctl.c b/net/rds/sysctl.c
new file mode 100644
index 000000000000..307dc5c1be15
--- /dev/null
+++ b/net/rds/sysctl.c
@@ -0,0 +1,122 @@
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
39static struct ctl_table_header *rds_sysctl_reg_table;
40
41static unsigned long rds_sysctl_reconnect_min = 1;
42static unsigned long rds_sysctl_reconnect_max = ~0UL;
43
44unsigned long rds_sysctl_reconnect_min_jiffies;
45unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
46
47unsigned int rds_sysctl_max_unacked_packets = 8;
48unsigned int rds_sysctl_max_unacked_bytes = (16 << 20);
49
50unsigned int rds_sysctl_ping_enable = 1;
51
52static ctl_table rds_sysctl_rds_table[] = {
53 {
54 .ctl_name = CTL_UNNUMBERED,
55 .procname = "reconnect_min_delay_ms",
56 .data = &rds_sysctl_reconnect_min_jiffies,
57 .maxlen = sizeof(unsigned long),
58 .mode = 0644,
59 .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
60 .extra1 = &rds_sysctl_reconnect_min,
61 .extra2 = &rds_sysctl_reconnect_max_jiffies,
62 },
63 {
64 .ctl_name = CTL_UNNUMBERED,
65 .procname = "reconnect_max_delay_ms",
66 .data = &rds_sysctl_reconnect_max_jiffies,
67 .maxlen = sizeof(unsigned long),
68 .mode = 0644,
69 .proc_handler = &proc_doulongvec_ms_jiffies_minmax,
70 .extra1 = &rds_sysctl_reconnect_min_jiffies,
71 .extra2 = &rds_sysctl_reconnect_max,
72 },
73 {
74 .ctl_name = CTL_UNNUMBERED,
75 .procname = "max_unacked_packets",
76 .data = &rds_sysctl_max_unacked_packets,
77 .maxlen = sizeof(unsigned long),
78 .mode = 0644,
79 .proc_handler = &proc_dointvec,
80 },
81 {
82 .ctl_name = CTL_UNNUMBERED,
83 .procname = "max_unacked_bytes",
84 .data = &rds_sysctl_max_unacked_bytes,
85 .maxlen = sizeof(unsigned long),
86 .mode = 0644,
87 .proc_handler = &proc_dointvec,
88 },
89 {
90 .ctl_name = CTL_UNNUMBERED,
91 .procname = "ping_enable",
92 .data = &rds_sysctl_ping_enable,
93 .maxlen = sizeof(int),
94 .mode = 0644,
95 .proc_handler = &proc_dointvec,
96 },
97 { .ctl_name = 0}
98};
99
100static struct ctl_path rds_sysctl_path[] = {
101 { .procname = "net", .ctl_name = CTL_NET, },
102 { .procname = "rds", .ctl_name = CTL_UNNUMBERED, },
103 { }
104};
105
106
107void rds_sysctl_exit(void)
108{
109 if (rds_sysctl_reg_table)
110 unregister_sysctl_table(rds_sysctl_reg_table);
111}
112
113int __init rds_sysctl_init(void)
114{
115 rds_sysctl_reconnect_min = msecs_to_jiffies(1);
116 rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
117
118 rds_sysctl_reg_table = register_sysctl_paths(rds_sysctl_path, rds_sysctl_rds_table);
119 if (rds_sysctl_reg_table == NULL)
120 return -ENOMEM;
121 return 0;
122}