blob: 5d5ebd576f3f65bcd3c399a43b99f92f5e99f5d3 [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
stephen hemmingerff51bf82010-10-19 08:08:33 +000058static ctl_table rds_iw_sysctl_table[] = {
Andy Groverfcd8b7c2009-02-24 15:30:36 +000059 {
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
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000112void rds_iw_sysctl_exit(void)
113{
114 if (rds_iw_sysctl_hdr)
Eric W. Biederman5dd3df12012-04-19 13:24:33 +0000115 unregister_net_sysctl_table(rds_iw_sysctl_hdr);
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000116}
117
Zach Brownef87b7e2010-07-09 12:26:20 -0700118int rds_iw_sysctl_init(void)
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000119{
Eric W. Biedermanec8f23c2012-04-19 13:44:49 +0000120 rds_iw_sysctl_hdr = register_net_sysctl(&init_net, "net/rds/iw", rds_iw_sysctl_table);
Andy Grover8690bfa2010-01-12 11:56:44 -0800121 if (!rds_iw_sysctl_hdr)
Andy Groverfcd8b7c2009-02-24 15:30:36 +0000122 return -ENOMEM;
123 return 0;
124}