blob: 23e3a9a26aaf36285fef39e8b909ce0d8b62327a [file] [log] [blame]
Andy Groverfcd8b7c2009-02-24 15:30:36 +00001/*
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 "iw.h"
38
39static struct ctl_table_header *rds_iw_sysctl_hdr;
40
41unsigned long rds_iw_sysctl_max_send_wr = RDS_IW_DEFAULT_SEND_WR;
42unsigned long rds_iw_sysctl_max_recv_wr = RDS_IW_DEFAULT_RECV_WR;
43unsigned long rds_iw_sysctl_max_recv_allocation = (128 * 1024 * 1024) / RDS_FRAG_SIZE;
44static unsigned long rds_iw_sysctl_max_wr_min = 1;
45/* hardware will fail CQ creation long before this */
46static unsigned long rds_iw_sysctl_max_wr_max = (u32)~0;
47
48unsigned long rds_iw_sysctl_max_unsig_wrs = 16;
49static unsigned long rds_iw_sysctl_max_unsig_wr_min = 1;
50static unsigned long rds_iw_sysctl_max_unsig_wr_max = 64;
51
52unsigned long rds_iw_sysctl_max_unsig_bytes = (16 << 20);
53static unsigned long rds_iw_sysctl_max_unsig_bytes_min = 1;
54static unsigned long rds_iw_sysctl_max_unsig_bytes_max = ~0UL;
55
56unsigned int rds_iw_sysctl_flow_control = 1;
57
58ctl_table rds_iw_sysctl_table[] = {
59 {
Andy Groverfcd8b7c2009-02-24 15:30:36 +000060 .procname = "max_send_wr",
61 .data = &rds_iw_sysctl_max_send_wr,
62 .maxlen = sizeof(unsigned long),
63 .mode = 0644,
Eric W. Biederman6d456112009-11-16 03:11:48 -080064 .proc_handler = proc_doulongvec_minmax,
Andy Groverfcd8b7c2009-02-24 15:30:36 +000065 .extra1 = &rds_iw_sysctl_max_wr_min,
66 .extra2 = &rds_iw_sysctl_max_wr_max,
67 },
68 {
Andy Groverfcd8b7c2009-02-24 15:30:36 +000069 .procname = "max_recv_wr",
70 .data = &rds_iw_sysctl_max_recv_wr,
71 .maxlen = sizeof(unsigned long),
72 .mode = 0644,
Eric W. Biederman6d456112009-11-16 03:11:48 -080073 .proc_handler = proc_doulongvec_minmax,
Andy Groverfcd8b7c2009-02-24 15:30:36 +000074 .extra1 = &rds_iw_sysctl_max_wr_min,
75 .extra2 = &rds_iw_sysctl_max_wr_max,
76 },
77 {
Andy Groverfcd8b7c2009-02-24 15:30:36 +000078 .procname = "max_unsignaled_wr",
79 .data = &rds_iw_sysctl_max_unsig_wrs,
80 .maxlen = sizeof(unsigned long),
81 .mode = 0644,
Eric W. Biederman6d456112009-11-16 03:11:48 -080082 .proc_handler = proc_doulongvec_minmax,
Andy Groverfcd8b7c2009-02-24 15:30:36 +000083 .extra1 = &rds_iw_sysctl_max_unsig_wr_min,
84 .extra2 = &rds_iw_sysctl_max_unsig_wr_max,
85 },
86 {
Andy Groverfcd8b7c2009-02-24 15:30:36 +000087 .procname = "max_unsignaled_bytes",
88 .data = &rds_iw_sysctl_max_unsig_bytes,
89 .maxlen = sizeof(unsigned long),
90 .mode = 0644,
Eric W. Biederman6d456112009-11-16 03:11:48 -080091 .proc_handler = proc_doulongvec_minmax,
Andy Groverfcd8b7c2009-02-24 15:30:36 +000092 .extra1 = &rds_iw_sysctl_max_unsig_bytes_min,
93 .extra2 = &rds_iw_sysctl_max_unsig_bytes_max,
94 },
95 {
Andy Groverfcd8b7c2009-02-24 15:30:36 +000096 .procname = "max_recv_allocation",
97 .data = &rds_iw_sysctl_max_recv_allocation,
98 .maxlen = sizeof(unsigned long),
99 .mode = 0644,
Eric W. Biederman6d456112009-11-16 03:11:48 -0800100 .proc_handler = proc_doulongvec_minmax,
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000101 },
102 {
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000103 .procname = "flow_control",
104 .data = &rds_iw_sysctl_flow_control,
105 .maxlen = sizeof(rds_iw_sysctl_flow_control),
106 .mode = 0644,
Eric W. Biederman6d456112009-11-16 03:11:48 -0800107 .proc_handler = proc_dointvec,
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000108 },
Eric W. Biedermanf8572d82009-11-05 13:32:03 -0800109 { }
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000110};
111
112static struct ctl_path rds_iw_sysctl_path[] = {
Eric W. Biedermanf8572d82009-11-05 13:32:03 -0800113 { .procname = "net", },
114 { .procname = "rds", },
115 { .procname = "iw", },
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000116 { }
117};
118
119void rds_iw_sysctl_exit(void)
120{
121 if (rds_iw_sysctl_hdr)
122 unregister_sysctl_table(rds_iw_sysctl_hdr);
123}
124
Zach Brownef87b7e2010-07-09 12:26:20 -0700125int rds_iw_sysctl_init(void)
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000126{
127 rds_iw_sysctl_hdr = register_sysctl_paths(rds_iw_sysctl_path, rds_iw_sysctl_table);
Andy Grover8690bfa2010-01-12 11:56:44 -0800128 if (!rds_iw_sysctl_hdr)
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000129 return -ENOMEM;
130 return 0;
131}