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(header: rds_sysctl_reg_table); |
98 | } |
99 | |
100 | int rds_sysctl_init(void) |
101 | { |
102 | rds_sysctl_reconnect_min = msecs_to_jiffies(m: 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 | } |
111 | |