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3e504849 AG |
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 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 | ||
100 | static struct ctl_path rds_sysctl_path[] = { | |
101 | { .procname = "net", .ctl_name = CTL_NET, }, | |
102 | { .procname = "rds", .ctl_name = CTL_UNNUMBERED, }, | |
103 | { } | |
104 | }; | |
105 | ||
106 | ||
107 | void rds_sysctl_exit(void) | |
108 | { | |
109 | if (rds_sysctl_reg_table) | |
110 | unregister_sysctl_table(rds_sysctl_reg_table); | |
111 | } | |
112 | ||
113 | int __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 | } |