1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2006 Oracle. All rights reserved.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * This software is available to you under a choice of one of two
5*4882a593Smuzhiyun * licenses. You may choose to be licensed under the terms of the GNU
6*4882a593Smuzhiyun * General Public License (GPL) Version 2, available from the file
7*4882a593Smuzhiyun * COPYING in the main directory of this source tree, or the
8*4882a593Smuzhiyun * OpenIB.org BSD license below:
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or
11*4882a593Smuzhiyun * without modification, are permitted provided that the following
12*4882a593Smuzhiyun * conditions are met:
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * - Redistributions of source code must retain the above
15*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
16*4882a593Smuzhiyun * disclaimer.
17*4882a593Smuzhiyun *
18*4882a593Smuzhiyun * - Redistributions in binary form must reproduce the above
19*4882a593Smuzhiyun * copyright notice, this list of conditions and the following
20*4882a593Smuzhiyun * disclaimer in the documentation and/or other materials
21*4882a593Smuzhiyun * provided with the distribution.
22*4882a593Smuzhiyun *
23*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24*4882a593Smuzhiyun * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25*4882a593Smuzhiyun * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26*4882a593Smuzhiyun * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27*4882a593Smuzhiyun * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28*4882a593Smuzhiyun * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29*4882a593Smuzhiyun * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30*4882a593Smuzhiyun * SOFTWARE.
31*4882a593Smuzhiyun *
32*4882a593Smuzhiyun */
33*4882a593Smuzhiyun #include <linux/kernel.h>
34*4882a593Smuzhiyun #include <linux/sysctl.h>
35*4882a593Smuzhiyun #include <linux/proc_fs.h>
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun #include "rds.h"
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun static struct ctl_table_header *rds_sysctl_reg_table;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun static unsigned long rds_sysctl_reconnect_min = 1;
42*4882a593Smuzhiyun static unsigned long rds_sysctl_reconnect_max = ~0UL;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun unsigned long rds_sysctl_reconnect_min_jiffies;
45*4882a593Smuzhiyun unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun unsigned int rds_sysctl_max_unacked_packets = 8;
48*4882a593Smuzhiyun unsigned int rds_sysctl_max_unacked_bytes = (16 << 20);
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun unsigned int rds_sysctl_ping_enable = 1;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun static struct ctl_table rds_sysctl_rds_table[] = {
53*4882a593Smuzhiyun {
54*4882a593Smuzhiyun .procname = "reconnect_min_delay_ms",
55*4882a593Smuzhiyun .data = &rds_sysctl_reconnect_min_jiffies,
56*4882a593Smuzhiyun .maxlen = sizeof(unsigned long),
57*4882a593Smuzhiyun .mode = 0644,
58*4882a593Smuzhiyun .proc_handler = proc_doulongvec_ms_jiffies_minmax,
59*4882a593Smuzhiyun .extra1 = &rds_sysctl_reconnect_min,
60*4882a593Smuzhiyun .extra2 = &rds_sysctl_reconnect_max_jiffies,
61*4882a593Smuzhiyun },
62*4882a593Smuzhiyun {
63*4882a593Smuzhiyun .procname = "reconnect_max_delay_ms",
64*4882a593Smuzhiyun .data = &rds_sysctl_reconnect_max_jiffies,
65*4882a593Smuzhiyun .maxlen = sizeof(unsigned long),
66*4882a593Smuzhiyun .mode = 0644,
67*4882a593Smuzhiyun .proc_handler = proc_doulongvec_ms_jiffies_minmax,
68*4882a593Smuzhiyun .extra1 = &rds_sysctl_reconnect_min_jiffies,
69*4882a593Smuzhiyun .extra2 = &rds_sysctl_reconnect_max,
70*4882a593Smuzhiyun },
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun .procname = "max_unacked_packets",
73*4882a593Smuzhiyun .data = &rds_sysctl_max_unacked_packets,
74*4882a593Smuzhiyun .maxlen = sizeof(int),
75*4882a593Smuzhiyun .mode = 0644,
76*4882a593Smuzhiyun .proc_handler = proc_dointvec,
77*4882a593Smuzhiyun },
78*4882a593Smuzhiyun {
79*4882a593Smuzhiyun .procname = "max_unacked_bytes",
80*4882a593Smuzhiyun .data = &rds_sysctl_max_unacked_bytes,
81*4882a593Smuzhiyun .maxlen = sizeof(int),
82*4882a593Smuzhiyun .mode = 0644,
83*4882a593Smuzhiyun .proc_handler = proc_dointvec,
84*4882a593Smuzhiyun },
85*4882a593Smuzhiyun {
86*4882a593Smuzhiyun .procname = "ping_enable",
87*4882a593Smuzhiyun .data = &rds_sysctl_ping_enable,
88*4882a593Smuzhiyun .maxlen = sizeof(int),
89*4882a593Smuzhiyun .mode = 0644,
90*4882a593Smuzhiyun .proc_handler = proc_dointvec,
91*4882a593Smuzhiyun },
92*4882a593Smuzhiyun { }
93*4882a593Smuzhiyun };
94*4882a593Smuzhiyun
rds_sysctl_exit(void)95*4882a593Smuzhiyun void rds_sysctl_exit(void)
96*4882a593Smuzhiyun {
97*4882a593Smuzhiyun unregister_net_sysctl_table(rds_sysctl_reg_table);
98*4882a593Smuzhiyun }
99*4882a593Smuzhiyun
rds_sysctl_init(void)100*4882a593Smuzhiyun int rds_sysctl_init(void)
101*4882a593Smuzhiyun {
102*4882a593Smuzhiyun rds_sysctl_reconnect_min = msecs_to_jiffies(1);
103*4882a593Smuzhiyun rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun rds_sysctl_reg_table =
106*4882a593Smuzhiyun register_net_sysctl(&init_net, "net/rds", rds_sysctl_rds_table);
107*4882a593Smuzhiyun if (!rds_sysctl_reg_table)
108*4882a593Smuzhiyun return -ENOMEM;
109*4882a593Smuzhiyun return 0;
110*4882a593Smuzhiyun }
111