1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2006 Cluster File Systems, Inc.
5 * Author: Eric Barton <eric@bartonsoftware.com>
7 * This file is part of Lustre, http://www.lustre.org.
9 * Lustre is free software; you can redistribute it and/or
10 * modify it under the terms of version 2 of the GNU General Public
11 * License as published by the Free Software Foundation.
13 * Lustre is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Lustre; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 static int service = 987;
27 CFS_MODULE_PARM(service, "i", int, 0444,
28 "service number (within RDMA_PS_TCP)");
31 CFS_MODULE_PARM(cksum, "i", int, 0644,
32 "set non-zero to enable message (not RDMA) checksums");
34 static int timeout = 50;
35 CFS_MODULE_PARM(timeout, "i", int, 0644,
39 CFS_MODULE_PARM(ntx, "i", int, 0444,
40 "# of message descriptors");
42 static int credits = 64;
43 CFS_MODULE_PARM(credits, "i", int, 0444,
44 "# concurrent sends");
46 static int peer_credits = 8;
47 CFS_MODULE_PARM(peer_credits, "i", int, 0444,
48 "# concurrent sends to 1 peer");
50 static char *ipif_name = "ib0";
51 CFS_MODULE_PARM(ipif_name, "s", charp, 0444,
52 "IPoIB interface name");
54 static int retry_count = 5;
55 CFS_MODULE_PARM(retry_count, "i", int, 0644,
56 "Retransmissions when no ACK received");
58 static int rnr_retry_count = 6;
59 CFS_MODULE_PARM(rnr_retry_count, "i", int, 0644,
60 "RNR retransmissions");
62 static int keepalive = 100;
63 CFS_MODULE_PARM(keepalive, "i", int, 0644,
64 "Idle time in seconds before sending a keepalive");
66 static int ib_mtu = 0;
67 CFS_MODULE_PARM(ib_mtu, "i", int, 0444,
68 "IB MTU 256/512/1024/2048/4096");
70 #if IBLND_MAP_ON_DEMAND
71 static int concurrent_sends = IBLND_RX_MSGS;
73 static int concurrent_sends = IBLND_MSG_QUEUE_SIZE;
75 CFS_MODULE_PARM(concurrent_sends, "i", int, 0444,
76 "send work-queue sizing");
78 #if IBLND_MAP_ON_DEMAND
79 static int fmr_pool_size = 512;
80 CFS_MODULE_PARM(fmr_pool_size, "i", int, 0444,
81 "size of the fmr pool (>= ntx)");
83 static int fmr_flush_trigger = 384;
84 CFS_MODULE_PARM(fmr_flush_trigger, "i", int, 0444,
85 "# dirty FMRs that triggers pool flush");
87 static int fmr_cache = 1;
88 CFS_MODULE_PARM(fmr_cache, "i", int, 0444,
89 "non-zero to enable FMR caching");
92 kib_tunables_t kiblnd_tunables = {
93 .kib_service = &service,
95 .kib_timeout = &timeout,
96 .kib_keepalive = &keepalive,
98 .kib_credits = &credits,
99 .kib_peercredits = &peer_credits,
100 .kib_default_ipif = &ipif_name,
101 .kib_retry_count = &retry_count,
102 .kib_rnr_retry_count = &rnr_retry_count,
103 .kib_concurrent_sends = &concurrent_sends,
104 .kib_ib_mtu = &ib_mtu,
105 #if IBLND_MAP_ON_DEMAND
106 .kib_fmr_pool_size = &fmr_pool_size,
107 .kib_fmr_flush_trigger = &fmr_flush_trigger,
108 .kib_fmr_cache = &fmr_cache,
112 #if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
114 static char ipif_basename_space[32];
116 static cfs_sysctl_table_t kiblnd_ctl_table[] = {
119 .procname = "service",
121 .maxlen = sizeof(int),
123 .proc_handler = &proc_dointvec
129 .maxlen = sizeof(int),
131 .proc_handler = &proc_dointvec
135 .procname = "timeout",
137 .maxlen = sizeof(int),
139 .proc_handler = &proc_dointvec
145 .maxlen = sizeof(int),
147 .proc_handler = &proc_dointvec
151 .procname = "credits",
153 .maxlen = sizeof(int),
155 .proc_handler = &proc_dointvec
159 .procname = "peer_credits",
160 .data = &peer_credits,
161 .maxlen = sizeof(int),
163 .proc_handler = &proc_dointvec
167 .procname = "ipif_name",
168 .data = ipif_basename_space,
169 .maxlen = sizeof(ipif_basename_space),
171 .proc_handler = &proc_dostring
175 .procname = "retry_count",
176 .data = &retry_count,
177 .maxlen = sizeof(int),
179 .proc_handler = &proc_dointvec
183 .procname = "rnr_retry_count",
184 .data = &rnr_retry_count,
185 .maxlen = sizeof(int),
187 .proc_handler = &proc_dointvec
191 .procname = "keepalive",
193 .maxlen = sizeof(int),
195 .proc_handler = &proc_dointvec
199 .procname = "concurrent_sends",
200 .data = &concurrent_sends,
201 .maxlen = sizeof(int),
203 .proc_handler = &proc_dointvec
207 .procname = "ib_mtu",
209 .maxlen = sizeof(int),
211 .proc_handler = &proc_dointvec
213 #if IBLND_MAP_ON_DEMAND
216 .procname = "fmr_pool_size",
217 .data = &fmr_pool_size,
218 .maxlen = sizeof(int),
220 .proc_handler = &proc_dointvec
224 .procname = "fmr_flush_trigger",
225 .data = &fmr_flush_trigger,
226 .maxlen = sizeof(int),
228 .proc_handler = &proc_dointvec
232 .procname = "fmr_cache",
234 .maxlen = sizeof(int),
236 .proc_handler = &proc_dointvec
242 static cfs_sysctl_table_t kiblnd_top_ctl_table[] = {
245 .procname = "o2iblnd",
249 .child = kiblnd_ctl_table
255 kiblnd_initstrtunable(char *space, char *str, int size)
257 strncpy(space, str, size);
262 kiblnd_sysctl_init (void)
264 kiblnd_initstrtunable(ipif_basename_space, ipif_name,
265 sizeof(ipif_basename_space));
267 kiblnd_tunables.kib_sysctl =
268 cfs_register_sysctl_table(kiblnd_top_ctl_table, 0);
270 if (kiblnd_tunables.kib_sysctl == NULL)
271 CWARN("Can't setup /proc tunables\n");
275 kiblnd_sysctl_fini (void)
277 if (kiblnd_tunables.kib_sysctl != NULL)
278 cfs_unregister_sysctl_table(kiblnd_tunables.kib_sysctl);
284 kiblnd_sysctl_init (void)
289 kiblnd_sysctl_fini (void)
296 kiblnd_tunables_init (void)
298 kiblnd_sysctl_init();
300 if (*kiblnd_tunables.kib_concurrent_sends > IBLND_RX_MSGS)
301 *kiblnd_tunables.kib_concurrent_sends = IBLND_RX_MSGS;
302 if (*kiblnd_tunables.kib_concurrent_sends < IBLND_MSG_QUEUE_SIZE)
303 *kiblnd_tunables.kib_concurrent_sends = IBLND_MSG_QUEUE_SIZE;
309 kiblnd_tunables_fini (void)
311 kiblnd_sysctl_fini();