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41#include "o2iblnd.h"
42
43static int service = 987;
44CFS_MODULE_PARM(service, "i", int, 0444,
45 "service number (within RDMA_PS_TCP)");
46
47static int cksum = 0;
48CFS_MODULE_PARM(cksum, "i", int, 0644,
49 "set non-zero to enable message (not RDMA) checksums");
50
51static int timeout = 50;
52CFS_MODULE_PARM(timeout, "i", int, 0644,
53 "timeout (seconds)");
54
55
56
57static int nscheds;
58CFS_MODULE_PARM(nscheds, "i", int, 0444,
59 "number of threads in each scheduler pool");
60
61
62static int ntx = 512;
63CFS_MODULE_PARM(ntx, "i", int, 0444,
64 "# of message descriptors allocated for each pool");
65
66
67static int credits = 256;
68CFS_MODULE_PARM(credits, "i", int, 0444,
69 "# concurrent sends");
70
71static int peer_credits = 8;
72CFS_MODULE_PARM(peer_credits, "i", int, 0444,
73 "# concurrent sends to 1 peer");
74
75static int peer_credits_hiw = 0;
76CFS_MODULE_PARM(peer_credits_hiw, "i", int, 0444,
77 "when eagerly to return credits");
78
79static int peer_buffer_credits = 0;
80CFS_MODULE_PARM(peer_buffer_credits, "i", int, 0444,
81 "# per-peer router buffer credits");
82
83static int peer_timeout = 180;
84CFS_MODULE_PARM(peer_timeout, "i", int, 0444,
85 "Seconds without aliveness news to declare peer dead (<=0 to disable)");
86
87static char *ipif_name = "ib0";
88CFS_MODULE_PARM(ipif_name, "s", charp, 0444,
89 "IPoIB interface name");
90
91static int retry_count = 5;
92CFS_MODULE_PARM(retry_count, "i", int, 0644,
93 "Retransmissions when no ACK received");
94
95static int rnr_retry_count = 6;
96CFS_MODULE_PARM(rnr_retry_count, "i", int, 0644,
97 "RNR retransmissions");
98
99static int keepalive = 100;
100CFS_MODULE_PARM(keepalive, "i", int, 0644,
101 "Idle time in seconds before sending a keepalive");
102
103static int ib_mtu = 0;
104CFS_MODULE_PARM(ib_mtu, "i", int, 0444,
105 "IB MTU 256/512/1024/2048/4096");
106
107static int concurrent_sends = 0;
108CFS_MODULE_PARM(concurrent_sends, "i", int, 0444,
109 "send work-queue sizing");
110
111static int map_on_demand = 0;
112CFS_MODULE_PARM(map_on_demand, "i", int, 0444,
113 "map on demand");
114
115
116static int fmr_pool_size = 512;
117CFS_MODULE_PARM(fmr_pool_size, "i", int, 0444,
118 "size of fmr pool on each CPT (>= ntx / 4)");
119
120
121static int fmr_flush_trigger = 384;
122CFS_MODULE_PARM(fmr_flush_trigger, "i", int, 0444,
123 "# dirty FMRs that triggers pool flush");
124
125static int fmr_cache = 1;
126CFS_MODULE_PARM(fmr_cache, "i", int, 0444,
127 "non-zero to enable FMR caching");
128
129
130static int pmr_pool_size = 512;
131CFS_MODULE_PARM(pmr_pool_size, "i", int, 0444,
132 "size of MR cache pmr pool on each CPT");
133
134
135
136
137
138
139static int dev_failover = 0;
140CFS_MODULE_PARM(dev_failover, "i", int, 0444,
141 "HCA failover for bonding (0 off, 1 on, other values reserved)");
142
143
144static int require_privileged_port = 0;
145CFS_MODULE_PARM(require_privileged_port, "i", int, 0644,
146 "require privileged port when accepting connection");
147
148static int use_privileged_port = 1;
149CFS_MODULE_PARM(use_privileged_port, "i", int, 0644,
150 "use privileged port when initiating connection");
151
152kib_tunables_t kiblnd_tunables = {
153 .kib_dev_failover = &dev_failover,
154 .kib_service = &service,
155 .kib_cksum = &cksum,
156 .kib_timeout = &timeout,
157 .kib_keepalive = &keepalive,
158 .kib_ntx = &ntx,
159 .kib_credits = &credits,
160 .kib_peertxcredits = &peer_credits,
161 .kib_peercredits_hiw = &peer_credits_hiw,
162 .kib_peerrtrcredits = &peer_buffer_credits,
163 .kib_peertimeout = &peer_timeout,
164 .kib_default_ipif = &ipif_name,
165 .kib_retry_count = &retry_count,
166 .kib_rnr_retry_count = &rnr_retry_count,
167 .kib_concurrent_sends = &concurrent_sends,
168 .kib_ib_mtu = &ib_mtu,
169 .kib_map_on_demand = &map_on_demand,
170 .kib_fmr_pool_size = &fmr_pool_size,
171 .kib_fmr_flush_trigger = &fmr_flush_trigger,
172 .kib_fmr_cache = &fmr_cache,
173 .kib_pmr_pool_size = &pmr_pool_size,
174 .kib_require_priv_port = &require_privileged_port,
175 .kib_use_priv_port = &use_privileged_port,
176 .kib_nscheds = &nscheds
177};
178
179#if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
180
181static char ipif_basename_space[32];
182
183
184enum {
185 O2IBLND_SERVICE = 1,
186 O2IBLND_CKSUM,
187 O2IBLND_TIMEOUT,
188 O2IBLND_NTX,
189 O2IBLND_CREDITS,
190 O2IBLND_PEER_TXCREDITS,
191 O2IBLND_PEER_CREDITS_HIW,
192 O2IBLND_PEER_RTRCREDITS,
193 O2IBLND_PEER_TIMEOUT,
194 O2IBLND_IPIF_BASENAME,
195 O2IBLND_RETRY_COUNT,
196 O2IBLND_RNR_RETRY_COUNT,
197 O2IBLND_KEEPALIVE,
198 O2IBLND_CONCURRENT_SENDS,
199 O2IBLND_IB_MTU,
200 O2IBLND_MAP_ON_DEMAND,
201 O2IBLND_FMR_POOL_SIZE,
202 O2IBLND_FMR_FLUSH_TRIGGER,
203 O2IBLND_FMR_CACHE,
204 O2IBLND_PMR_POOL_SIZE,
205 O2IBLND_DEV_FAILOVER
206};
207
208static ctl_table_t kiblnd_ctl_table[] = {
209 {
210 .ctl_name = O2IBLND_SERVICE,
211 .procname = "service",
212 .data = &service,
213 .maxlen = sizeof(int),
214 .mode = 0444,
215 .proc_handler = &proc_dointvec
216 },
217 {
218 .ctl_name = O2IBLND_CKSUM,
219 .procname = "cksum",
220 .data = &cksum,
221 .maxlen = sizeof(int),
222 .mode = 0644,
223 .proc_handler = &proc_dointvec
224 },
225 {
226 .ctl_name = O2IBLND_TIMEOUT,
227 .procname = "timeout",
228 .data = &timeout,
229 .maxlen = sizeof(int),
230 .mode = 0644,
231 .proc_handler = &proc_dointvec
232 },
233 {
234 .ctl_name = O2IBLND_NTX,
235 .procname = "ntx",
236 .data = &ntx,
237 .maxlen = sizeof(int),
238 .mode = 0444,
239 .proc_handler = &proc_dointvec
240 },
241 {
242 .ctl_name = O2IBLND_CREDITS,
243 .procname = "credits",
244 .data = &credits,
245 .maxlen = sizeof(int),
246 .mode = 0444,
247 .proc_handler = &proc_dointvec
248 },
249 {
250 .ctl_name = O2IBLND_PEER_TXCREDITS,
251 .procname = "peer_credits",
252 .data = &peer_credits,
253 .maxlen = sizeof(int),
254 .mode = 0444,
255 .proc_handler = &proc_dointvec
256 },
257 {
258 .ctl_name = O2IBLND_PEER_CREDITS_HIW,
259 .procname = "peer_credits_hiw",
260 .data = &peer_credits_hiw,
261 .maxlen = sizeof(int),
262 .mode = 0444,
263 .proc_handler = &proc_dointvec
264 },
265 {
266 .ctl_name = O2IBLND_PEER_RTRCREDITS,
267 .procname = "peer_buffer_credits",
268 .data = &peer_buffer_credits,
269 .maxlen = sizeof(int),
270 .mode = 0444,
271 .proc_handler = &proc_dointvec
272 },
273 {
274 .ctl_name = O2IBLND_PEER_TIMEOUT,
275 .procname = "peer_timeout",
276 .data = &peer_timeout,
277 .maxlen = sizeof(int),
278 .mode = 0444,
279 .proc_handler = &proc_dointvec
280 },
281 {
282 .ctl_name = O2IBLND_IPIF_BASENAME,
283 .procname = "ipif_name",
284 .data = ipif_basename_space,
285 .maxlen = sizeof(ipif_basename_space),
286 .mode = 0444,
287 .proc_handler = &proc_dostring
288 },
289 {
290 .ctl_name = O2IBLND_RETRY_COUNT,
291 .procname = "retry_count",
292 .data = &retry_count,
293 .maxlen = sizeof(int),
294 .mode = 0644,
295 .proc_handler = &proc_dointvec
296 },
297 {
298 .ctl_name = O2IBLND_RNR_RETRY_COUNT,
299 .procname = "rnr_retry_count",
300 .data = &rnr_retry_count,
301 .maxlen = sizeof(int),
302 .mode = 0644,
303 .proc_handler = &proc_dointvec
304 },
305 {
306 .ctl_name = O2IBLND_KEEPALIVE,
307 .procname = "keepalive",
308 .data = &keepalive,
309 .maxlen = sizeof(int),
310 .mode = 0644,
311 .proc_handler = &proc_dointvec
312 },
313 {
314 .ctl_name = O2IBLND_CONCURRENT_SENDS,
315 .procname = "concurrent_sends",
316 .data = &concurrent_sends,
317 .maxlen = sizeof(int),
318 .mode = 0444,
319 .proc_handler = &proc_dointvec
320 },
321 {
322 .ctl_name = O2IBLND_IB_MTU,
323 .procname = "ib_mtu",
324 .data = &ib_mtu,
325 .maxlen = sizeof(int),
326 .mode = 0444,
327 .proc_handler = &proc_dointvec
328 },
329 {
330 .ctl_name = O2IBLND_MAP_ON_DEMAND,
331 .procname = "map_on_demand",
332 .data = &map_on_demand,
333 .maxlen = sizeof(int),
334 .mode = 0444,
335 .proc_handler = &proc_dointvec
336 },
337
338 {
339 .ctl_name = O2IBLND_FMR_POOL_SIZE,
340 .procname = "fmr_pool_size",
341 .data = &fmr_pool_size,
342 .maxlen = sizeof(int),
343 .mode = 0444,
344 .proc_handler = &proc_dointvec
345 },
346 {
347 .ctl_name = O2IBLND_FMR_FLUSH_TRIGGER,
348 .procname = "fmr_flush_trigger",
349 .data = &fmr_flush_trigger,
350 .maxlen = sizeof(int),
351 .mode = 0444,
352 .proc_handler = &proc_dointvec
353 },
354 {
355 .ctl_name = O2IBLND_FMR_CACHE,
356 .procname = "fmr_cache",
357 .data = &fmr_cache,
358 .maxlen = sizeof(int),
359 .mode = 0444,
360 .proc_handler = &proc_dointvec
361 },
362 {
363 .ctl_name = O2IBLND_PMR_POOL_SIZE,
364 .procname = "pmr_pool_size",
365 .data = &pmr_pool_size,
366 .maxlen = sizeof(int),
367 .mode = 0444,
368 .proc_handler = &proc_dointvec
369 },
370 {
371 .ctl_name = O2IBLND_DEV_FAILOVER,
372 .procname = "dev_failover",
373 .data = &dev_failover,
374 .maxlen = sizeof(int),
375 .mode = 0444,
376 .proc_handler = &proc_dointvec
377 },
378 {0}
379};
380
381static ctl_table_t kiblnd_top_ctl_table[] = {
382 {
383 .ctl_name = CTL_O2IBLND,
384 .procname = "o2iblnd",
385 .data = NULL,
386 .maxlen = 0,
387 .mode = 0555,
388 .child = kiblnd_ctl_table
389 },
390 {0}
391};
392
393void
394kiblnd_initstrtunable(char *space, char *str, int size)
395{
396 strncpy(space, str, size);
397 space[size-1] = 0;
398}
399
400void
401kiblnd_sysctl_init (void)
402{
403 kiblnd_initstrtunable(ipif_basename_space, ipif_name,
404 sizeof(ipif_basename_space));
405
406 kiblnd_tunables.kib_sysctl =
407 register_sysctl_table(kiblnd_top_ctl_table);
408
409 if (kiblnd_tunables.kib_sysctl == NULL)
410 CWARN("Can't setup /proc tunables\n");
411}
412
413void
414kiblnd_sysctl_fini (void)
415{
416 if (kiblnd_tunables.kib_sysctl != NULL)
417 unregister_sysctl_table(kiblnd_tunables.kib_sysctl);
418}
419
420#else
421
422void
423kiblnd_sysctl_init (void)
424{
425}
426
427void
428kiblnd_sysctl_fini (void)
429{
430}
431
432#endif
433
434int
435kiblnd_tunables_init (void)
436{
437 if (kiblnd_translate_mtu(*kiblnd_tunables.kib_ib_mtu) < 0) {
438 CERROR("Invalid ib_mtu %d, expected 256/512/1024/2048/4096\n",
439 *kiblnd_tunables.kib_ib_mtu);
440 return -EINVAL;
441 }
442
443 if (*kiblnd_tunables.kib_peertxcredits < IBLND_CREDITS_DEFAULT)
444 *kiblnd_tunables.kib_peertxcredits = IBLND_CREDITS_DEFAULT;
445
446 if (*kiblnd_tunables.kib_peertxcredits > IBLND_CREDITS_MAX)
447 *kiblnd_tunables.kib_peertxcredits = IBLND_CREDITS_MAX;
448
449 if (*kiblnd_tunables.kib_peertxcredits > *kiblnd_tunables.kib_credits)
450 *kiblnd_tunables.kib_peertxcredits = *kiblnd_tunables.kib_credits;
451
452 if (*kiblnd_tunables.kib_peercredits_hiw < *kiblnd_tunables.kib_peertxcredits / 2)
453 *kiblnd_tunables.kib_peercredits_hiw = *kiblnd_tunables.kib_peertxcredits / 2;
454
455 if (*kiblnd_tunables.kib_peercredits_hiw >= *kiblnd_tunables.kib_peertxcredits)
456 *kiblnd_tunables.kib_peercredits_hiw = *kiblnd_tunables.kib_peertxcredits - 1;
457
458 if (*kiblnd_tunables.kib_map_on_demand < 0 ||
459 *kiblnd_tunables.kib_map_on_demand > IBLND_MAX_RDMA_FRAGS)
460 *kiblnd_tunables.kib_map_on_demand = 0;
461
462 if (*kiblnd_tunables.kib_map_on_demand == 1)
463 *kiblnd_tunables.kib_map_on_demand = 2;
464
465 if (*kiblnd_tunables.kib_concurrent_sends == 0) {
466 if (*kiblnd_tunables.kib_map_on_demand > 0 &&
467 *kiblnd_tunables.kib_map_on_demand <= IBLND_MAX_RDMA_FRAGS / 8)
468 *kiblnd_tunables.kib_concurrent_sends = (*kiblnd_tunables.kib_peertxcredits) * 2;
469 else
470 *kiblnd_tunables.kib_concurrent_sends = (*kiblnd_tunables.kib_peertxcredits);
471 }
472
473 if (*kiblnd_tunables.kib_concurrent_sends > *kiblnd_tunables.kib_peertxcredits * 2)
474 *kiblnd_tunables.kib_concurrent_sends = *kiblnd_tunables.kib_peertxcredits * 2;
475
476 if (*kiblnd_tunables.kib_concurrent_sends < *kiblnd_tunables.kib_peertxcredits / 2)
477 *kiblnd_tunables.kib_concurrent_sends = *kiblnd_tunables.kib_peertxcredits / 2;
478
479 if (*kiblnd_tunables.kib_concurrent_sends < *kiblnd_tunables.kib_peertxcredits) {
480 CWARN("Concurrent sends %d is lower than message queue size: %d, "
481 "performance may drop slightly.\n",
482 *kiblnd_tunables.kib_concurrent_sends, *kiblnd_tunables.kib_peertxcredits);
483 }
484
485 kiblnd_sysctl_init();
486 return 0;
487}
488
489void
490kiblnd_tunables_fini (void)
491{
492 kiblnd_sysctl_fini();
493}
494
