2 * Copyright (C) 2004 Cluster File Systems, Inc.
4 * Copyright (C) 2009-2012 Cray, Inc.
6 * Derived from work by: Eric Barton <eric@bartonsoftware.com>
7 * Author: Nic Henke <nic@cray.com>
9 * This file is part of Lustre, http://www.lustre.org.
11 * Lustre is free software; you can redistribute it and/or
12 * modify it under the terms of version 2 of the GNU General Public
13 * License as published by the Free Software Foundation.
15 * Lustre is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with Lustre; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 static int credits = 256;
29 CFS_MODULE_PARM(credits, "i", int, 0444,
30 "# concurrent sends");
32 static int eager_credits = 256 * 1024;
33 CFS_MODULE_PARM(eager_credits, "i", int, 0444,
36 static int peer_credits = 16;
37 CFS_MODULE_PARM(peer_credits, "i", int, 0444,
38 "# LNet peer credits");
40 /* NB - we'll not actually limit sends to this, we just size the mailbox buffer
41 * such that at most we'll have concurrent_sends * max_immediate messages
43 static int concurrent_sends = 0;
44 CFS_MODULE_PARM(concurrent_sends, "i", int, 0444,
45 "# concurrent HW sends to 1 peer");
47 /* default for 2k nodes @ 16 peer credits */
48 static int fma_cq_size = 32768;
49 CFS_MODULE_PARM(fma_cq_size, "i", int, 0444,
50 "size of the completion queue");
52 static int timeout = GNILND_BASE_TIMEOUT;
53 /* can't change @ runtime because LNet gets NI data at startup from
55 CFS_MODULE_PARM(timeout, "i", int, 0444,
56 "communications timeout (seconds)");
58 /* time to wait between datagram timeout and sending of next dgram */
59 static int min_reconnect_interval = GNILND_MIN_RECONNECT_TO;
60 CFS_MODULE_PARM(min_reconnect_interval, "i", int, 0644,
61 "minimum connection retry interval (seconds)");
63 /* if this goes longer than timeout, we'll timeout the TX before
65 static int max_reconnect_interval = GNILND_MAX_RECONNECT_TO;
66 CFS_MODULE_PARM(max_reconnect_interval, "i", int, 0644,
67 "maximum connection retry interval (seconds)");
69 static int max_immediate = 8192;
70 CFS_MODULE_PARM(max_immediate, "i", int, 0644,
71 "immediate/RDMA breakpoint");
73 static int checksum = GNILND_CHECKSUM_DEFAULT;
74 CFS_MODULE_PARM(checksum, "i", int, 0644,
75 "0: None, 1: headers, 2: short msg, 3: all traffic");
77 static int checksum_dump = 0;
78 CFS_MODULE_PARM(checksum_dump, "i", int, 0644,
79 "0: None, 1: dump log on failure, 2: payload data to D_INFO log");
81 static int bte_dlvr_mode = GNILND_RDMA_DLVR_OPTION;
82 CFS_MODULE_PARM(bte_dlvr_mode, "i", int, 0644,
83 "enable hashing for BTE (RDMA) transfers");
85 static int bte_relaxed_ordering = 1;
86 CFS_MODULE_PARM(bte_relaxed_ordering, "i", int, 0644,
87 "enable relaxed ordering (PASSPW) for BTE (RDMA) transfers");
90 static int ptag = GNI_PTAG_LND_KNC;
92 static int ptag = GNI_PTAG_LND;
94 CFS_MODULE_PARM(ptag, "i", int, 0444,
95 "ptag for Gemini CDM");
97 static int max_retransmits = 1024;
98 CFS_MODULE_PARM(max_retransmits, "i", int, 0444,
99 "max retransmits for FMA");
101 static int nwildcard = 4;
102 CFS_MODULE_PARM(nwildcard, "i", int, 0444,
103 "# wildcard datagrams to post per net (interface)");
105 static int nice = -20;
106 CFS_MODULE_PARM(nice, "i", int, 0444,
107 "nice value for kgnilnd threads, default -20");
109 static int rdmaq_intervals = 4;
110 CFS_MODULE_PARM(rdmaq_intervals, "i", int, 0644,
111 "# intervals per second for rdmaq throttling, default 4, 0 to disable");
113 static int loops = 100;
114 CFS_MODULE_PARM(loops, "i", int, 0644,
115 "# of loops before scheduler is friendly, default 100");
117 static int hash_size = 503;
118 CFS_MODULE_PARM(hash_size, "i", int, 0444,
119 "prime number for peer/conn hash sizing, default 503");
121 static int peer_health = 0;
122 CFS_MODULE_PARM(peer_health, "i", int, 0444,
123 "Disable peer timeout for LNet peer health, default off, > 0 to enable");
125 static int peer_timeout = -1;
126 CFS_MODULE_PARM(peer_timeout, "i", int, 0444,
127 "Peer timeout used for peer_health, default based on gnilnd timeout, > -1 to manually set");
129 static int vmap_cksum = 0;
130 CFS_MODULE_PARM(vmap_cksum, "i", int, 0644,
131 "use vmap for all kiov checksumming, default off");
133 static int mbox_per_block = GNILND_FMABLK;
134 CFS_MODULE_PARM(mbox_per_block, "i", int, 0644,
135 "mailboxes per block");
137 static int nphys_mbox = 0;
138 CFS_MODULE_PARM(nphys_mbox, "i", int, 0444,
139 "# mbox to preallocate from physical memory, default 0");
141 static int mbox_credits = GNILND_MBOX_CREDITS;
142 CFS_MODULE_PARM(mbox_credits, "i", int, 0644,
143 "number of credits per mailbox");
145 static int sched_threads = GNILND_SCHED_THREADS;
146 CFS_MODULE_PARM(sched_threads, "i", int, 0444,
147 "number of threads for moving data");
149 static int net_hash_size = 11;
150 CFS_MODULE_PARM(net_hash_size, "i", int, 0444,
151 "prime number for net hash sizing, default 11");
153 static int hardware_timeout = GNILND_HARDWARE_TIMEOUT;
154 CFS_MODULE_PARM(hardware_timeout, "i", int, 0444,
155 "maximum time for traffic to get from one node to another");
157 static int mdd_timeout = GNILND_MDD_TIMEOUT;
158 CFS_MODULE_PARM(mdd_timeout, "i", int, 0644,
159 "maximum time (in minutes) for mdd to be held");
161 static int sched_timeout = GNILND_SCHED_TIMEOUT;
162 CFS_MODULE_PARM(sched_timeout, "i", int, 0644,
163 "scheduler aliveness in seconds max time");
165 static int sched_nice = GNILND_SCHED_NICE;
166 CFS_MODULE_PARM(sched_nice, "i", int, 0444,
167 "scheduler's nice setting, default compute 0 service -20");
169 static int reverse_rdma = GNILND_REVERSE_RDMA;
170 CFS_MODULE_PARM(reverse_rdma, "i", int, 0644,
171 "Normal 0: Reverse GET: 1 Reverse Put: 2 Reverse Both: 3");
173 static int dgram_timeout = GNILND_DGRAM_TIMEOUT;
174 CFS_MODULE_PARM(dgram_timeout, "i", int, 0644,
175 "dgram thread aliveness seconds max time");
177 static int efault_lbug = 0;
178 CFS_MODULE_PARM(efault_lbug, "i", int, 0644,
179 "If a compute receives an EFAULT in"
180 " a message should it LBUG. 0 off 1 on");
182 static int fast_reconn = GNILND_FAST_RECONNECT;
183 CFS_MODULE_PARM(fast_reconn, "i", int, 0644,
184 "fast reconnect on connection timeout");
186 static int max_conn_purg = GNILND_PURGATORY_MAX;
187 CFS_MODULE_PARM(max_conn_purg, "i", int, 0644,
188 "Max number of connections per peer in purgatory");
190 static int thread_affinity = 0;
191 CFS_MODULE_PARM(thread_affinity, "i", int, 0444,
192 "scheduler thread affinity default 0 (diabled)");
194 kgn_tunables_t kgnilnd_tunables = {
195 .kgn_min_reconnect_interval = &min_reconnect_interval,
196 .kgn_max_reconnect_interval = &max_reconnect_interval,
197 .kgn_credits = &credits,
198 .kgn_peer_credits = &peer_credits,
199 .kgn_concurrent_sends = &concurrent_sends,
200 .kgn_fma_cq_size = &fma_cq_size,
201 .kgn_timeout = &timeout,
202 .kgn_max_immediate = &max_immediate,
203 .kgn_checksum = &checksum,
204 .kgn_checksum_dump = &checksum_dump,
205 .kgn_bte_dlvr_mode = &bte_dlvr_mode,
206 .kgn_bte_relaxed_ordering = &bte_relaxed_ordering,
208 .kgn_max_retransmits = &max_retransmits,
209 .kgn_nwildcard = &nwildcard,
211 .kgn_rdmaq_intervals = &rdmaq_intervals,
213 .kgn_peer_hash_size = &hash_size,
214 .kgn_peer_health = &peer_health,
215 .kgn_peer_timeout = &peer_timeout,
216 .kgn_vmap_cksum = &vmap_cksum,
217 .kgn_mbox_per_block = &mbox_per_block,
218 .kgn_nphys_mbox = &nphys_mbox,
219 .kgn_mbox_credits = &mbox_credits,
220 .kgn_sched_threads = &sched_threads,
221 .kgn_net_hash_size = &net_hash_size,
222 .kgn_hardware_timeout = &hardware_timeout,
223 .kgn_mdd_timeout = &mdd_timeout,
224 .kgn_sched_timeout = &sched_timeout,
225 .kgn_sched_nice = &sched_nice,
226 .kgn_reverse_rdma = &reverse_rdma,
227 .kgn_dgram_timeout = &dgram_timeout,
228 .kgn_eager_credits = &eager_credits,
229 .kgn_fast_reconn = &fast_reconn,
230 .kgn_efault_lbug = &efault_lbug,
231 .kgn_thread_affinity = &thread_affinity,
232 .kgn_max_purgatory = &max_conn_purg
235 #if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM
236 static struct ctl_table kgnilnd_ctl_table[] = {
239 .procname = "min_reconnect_interval",
240 .data = &min_reconnect_interval,
241 .maxlen = sizeof(int),
243 .proc_handler = &proc_dointvec
247 .procname = "max_reconnect_interval",
248 .data = &max_reconnect_interval,
249 .maxlen = sizeof(int),
251 .proc_handler = &proc_dointvec
255 .procname = "credits",
257 .maxlen = sizeof(int),
259 .proc_handler = &proc_dointvec
263 .procname = "peer_credits",
264 .data = &peer_credits,
265 .maxlen = sizeof(int),
267 .proc_handler = &proc_dointvec
271 .procname = "fma_cq_size",
272 .data = &fma_cq_size,
273 .maxlen = sizeof(int),
275 .proc_handler = &proc_dointvec
279 .procname = "timeout",
281 .maxlen = sizeof(int),
283 .proc_handler = &proc_dointvec
287 .procname = "max_immediate",
288 .data = &max_immediate,
289 .maxlen = sizeof(int),
291 .proc_handler = &proc_dointvec
295 .procname = "checksum",
297 .maxlen = sizeof(int),
299 .proc_handler = &proc_dointvec
303 .procname = "bte_dlvr_mode",
304 .data = &bte_dlvr_mode,
305 .maxlen = sizeof(int),
307 .proc_handler = &proc_dointvec
313 .maxlen = sizeof(int),
315 .proc_handler = &proc_dointvec
319 .procname = "nwildcard",
321 .maxlen = sizeof(int),
323 .proc_handler = &proc_dointvec
327 .procname = "bte_relaxed_ordering",
328 .data = &bte_relaxed_ordering,
329 .maxlen = sizeof(int),
331 .proc_handler = &proc_dointvec
335 .procname = "checksum_dump",
336 .data = &checksum_dump,
337 .maxlen = sizeof(int),
339 .proc_handler = &proc_dointvec
345 .maxlen = sizeof(int),
347 .proc_handler = &proc_dointvec
351 .procname = "rdmaq_intervals",
352 .data = &rdmaq_intervals,
353 .maxlen = sizeof(int),
355 .proc_handler = &proc_dointvec
361 .maxlen = sizeof(int),
363 .proc_handler = &proc_dointvec
367 .procname = "hash_size",
369 .maxlen = sizeof(int),
371 .proc_handler = &proc_dointvec
375 .procname = "peer_health",
376 .data = &peer_health,
377 .maxlen = sizeof(int),
379 .proc_handler = &proc_dointvec
383 .procname = "vmap_cksum",
385 .maxlen = sizeof(int),
387 .proc_handler = &proc_dointvec
391 .procname = "mbox_per_block",
392 .data = &mbox_per_block,
393 .maxlen = sizeof(int),
395 .proc_handler = &proc_dointvec
399 .procname = "mbox_credits"
400 .data = &mbox_credits,
401 .maxlen = sizeof(int),
403 .proc_handler = &proc_dointvec
407 .procname = "sched_threads"
408 .data = &sched_threads,
409 .maxlen = sizeof(int),
411 .proc_handler = &proc_dointvec
415 .procname = "net_hash_size",
416 .data = &net_hash_size,
417 .maxlen = sizeof(int),
419 .proc_handler = &proc_dointvec
423 .procname = "hardware_timeout",
424 .data = &hardware_timeout,
425 .maxlen = sizeof(int),
427 .proc_handler = &proc_dointvec
431 .procname = "mdd_timeout",
432 .data = &mdd_timeout,
433 .maxlen = sizeof(int),
435 .proc_handler = &proc_dointvec
439 .procname = "max_retransmits"
440 .data = &max_retransmits,
441 .maxlen = sizeof(int),
443 .proc_handler = &proc_dointvec
447 .procname = "concurrent_sends",
448 .data = &concurrent_sends,
449 .maxlen = sizeof(int),
451 .proc_handler = &proc_dointvec
455 .procname = "nphys_mbox",
457 .maxlen = sizeof(int),
459 .proc_handler = &proc_dointvec
463 .procname = "sched_timeout",
464 .data = &sched_timeout,
465 .maxlen = sizeof(int),
467 .proc_handler = &proc_dointvec
471 .procname = "sched_nice",
473 .maxlen = sizeof(int),
475 .proc_handler = &proc_dointvec
479 .procname = "reverse_rdma",
480 .data = &reverse_rdma,
481 .maxlen = sizeof(int),
483 .proc_handler = &proc_dointvec
486 .procname = "dgram_timeout"
487 .data = &dgram_timeout,
488 .maxlen = sizeof(int),
490 .proc_handler = &proc_dointvec
494 .procname = "peer_timeout"
495 .data = &peer_timeout,
496 .maxlen = sizeof(int),
498 .proc_handler = &proc_dointvec
502 .procname = "eager_credits",
503 .data = &eager_credits,
504 .maxlen = sizeof(int),
506 .proc_handler = &proc_dointvec
510 .procname = "efault_lbug"
511 .data = &efault_lbug,
512 .maxlen = sizeof(int),
514 .proc_handler = &proc_dointvec
518 .procname = "thread_affinity"
519 .data = &thread_affinity,
520 .maxlen = sizeof(int),
522 .proc_handler = &proc_dointvec
526 .procname = "max_conn_purg"
527 .data = &max_conn_purg,
528 .maxlen = sizeof(int),
530 .proc_handler = &proc_dointvec
535 static struct ctl_table kgnilnd_top_ctl_table[] = {
538 .procname = "gnilnd",
542 .child = kgnilnd_ctl_table
549 kgnilnd_tunables_init()
553 #if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM
554 kgnilnd_tunables.kgn_sysctl =
555 cfs_register_sysctl_table(kgnilnd_top_ctl_table, 0);
557 if (kgnilnd_tunables.kgn_sysctl == NULL)
558 CWARN("Can't setup /proc tunables\n");
560 switch (*kgnilnd_tunables.kgn_checksum) {
562 CERROR("Invalid checksum module parameter: %d\n",
563 *kgnilnd_tunables.kgn_checksum);
566 case GNILND_CHECKSUM_OFF:
567 /* no checksumming */
569 case GNILND_CHECKSUM_SMSG_HEADER:
570 LCONSOLE_INFO("SMSG header only checksumming enabled\n");
572 case GNILND_CHECKSUM_SMSG:
573 LCONSOLE_INFO("SMSG checksumming enabled\n");
575 case GNILND_CHECKSUM_SMSG_BTE:
576 LCONSOLE_INFO("SMSG + BTE checksumming enabled\n");
580 if (*kgnilnd_tunables.kgn_max_immediate > GNILND_MAX_IMMEDIATE) {
581 LCONSOLE_ERROR("kgnilnd module parameter 'max_immediate' too large %d > %d\n",
582 *kgnilnd_tunables.kgn_max_immediate, GNILND_MAX_IMMEDIATE);
587 if (*kgnilnd_tunables.kgn_mbox_per_block < 1) {
588 *kgnilnd_tunables.kgn_mbox_per_block = 1;
591 if (*kgnilnd_tunables.kgn_concurrent_sends == 0) {
592 *kgnilnd_tunables.kgn_concurrent_sends = *kgnilnd_tunables.kgn_peer_credits;
593 } else if (*kgnilnd_tunables.kgn_concurrent_sends > *kgnilnd_tunables.kgn_peer_credits) {
594 LCONSOLE_ERROR("kgnilnd parameter 'concurrent_sends' too large: %d > %d (peer_credits)\n",
595 *kgnilnd_tunables.kgn_concurrent_sends, *kgnilnd_tunables.kgn_peer_credits);
603 kgnilnd_tunables_fini()
605 #if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM
606 if (kgnilnd_tunables.kgn_sysctl != NULL)
607 cfs_unregister_sysctl_table(kgnilnd_tunables.kgn_sysctl);