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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. | |
2a1d9b7f | 3 | * Copyright (c) 2005 Voltaire, Inc. All rights reserved. |
c1a0b23b | 4 | * Copyright (c) 2006 Intel Corporation. All rights reserved. |
1da177e4 LT |
5 | * |
6 | * This software is available to you under a choice of one of two | |
7 | * licenses. You may choose to be licensed under the terms of the GNU | |
8 | * General Public License (GPL) Version 2, available from the file | |
9 | * COPYING in the main directory of this source tree, or the | |
10 | * OpenIB.org BSD license below: | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or | |
13 | * without modification, are permitted provided that the following | |
14 | * conditions are met: | |
15 | * | |
16 | * - Redistributions of source code must retain the above | |
17 | * copyright notice, this list of conditions and the following | |
18 | * disclaimer. | |
19 | * | |
20 | * - Redistributions in binary form must reproduce the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer in the documentation and/or other materials | |
23 | * provided with the distribution. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
32 | * SOFTWARE. | |
33 | * | |
cbae32c5 | 34 | * $Id: sa_query.c 2811 2005-07-06 18:11:43Z halr $ |
1da177e4 LT |
35 | */ |
36 | ||
37 | #include <linux/module.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/err.h> | |
40 | #include <linux/random.h> | |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/slab.h> | |
43 | #include <linux/pci.h> | |
44 | #include <linux/dma-mapping.h> | |
45 | #include <linux/kref.h> | |
46 | #include <linux/idr.h> | |
4e57b681 | 47 | #include <linux/workqueue.h> |
1da177e4 | 48 | |
a4d61e84 RD |
49 | #include <rdma/ib_pack.h> |
50 | #include <rdma/ib_sa.h> | |
6d969a47 | 51 | #include <rdma/ib_cache.h> |
1da177e4 LT |
52 | |
53 | MODULE_AUTHOR("Roland Dreier"); | |
54 | MODULE_DESCRIPTION("InfiniBand subnet administration query support"); | |
55 | MODULE_LICENSE("Dual BSD/GPL"); | |
56 | ||
1da177e4 LT |
57 | struct ib_sa_sm_ah { |
58 | struct ib_ah *ah; | |
59 | struct kref ref; | |
60 | }; | |
61 | ||
62 | struct ib_sa_port { | |
63 | struct ib_mad_agent *agent; | |
1da177e4 LT |
64 | struct ib_sa_sm_ah *sm_ah; |
65 | struct work_struct update_task; | |
66 | spinlock_t ah_lock; | |
67 | u8 port_num; | |
68 | }; | |
69 | ||
70 | struct ib_sa_device { | |
71 | int start_port, end_port; | |
72 | struct ib_event_handler event_handler; | |
73 | struct ib_sa_port port[0]; | |
74 | }; | |
75 | ||
76 | struct ib_sa_query { | |
77 | void (*callback)(struct ib_sa_query *, int, struct ib_sa_mad *); | |
78 | void (*release)(struct ib_sa_query *); | |
c1a0b23b | 79 | struct ib_sa_client *client; |
34816ad9 SH |
80 | struct ib_sa_port *port; |
81 | struct ib_mad_send_buf *mad_buf; | |
82 | struct ib_sa_sm_ah *sm_ah; | |
83 | int id; | |
1da177e4 LT |
84 | }; |
85 | ||
cbae32c5 HR |
86 | struct ib_sa_service_query { |
87 | void (*callback)(int, struct ib_sa_service_rec *, void *); | |
88 | void *context; | |
89 | struct ib_sa_query sa_query; | |
90 | }; | |
91 | ||
1da177e4 LT |
92 | struct ib_sa_path_query { |
93 | void (*callback)(int, struct ib_sa_path_rec *, void *); | |
94 | void *context; | |
95 | struct ib_sa_query sa_query; | |
96 | }; | |
97 | ||
98 | struct ib_sa_mcmember_query { | |
99 | void (*callback)(int, struct ib_sa_mcmember_rec *, void *); | |
100 | void *context; | |
101 | struct ib_sa_query sa_query; | |
102 | }; | |
103 | ||
104 | static void ib_sa_add_one(struct ib_device *device); | |
105 | static void ib_sa_remove_one(struct ib_device *device); | |
106 | ||
107 | static struct ib_client sa_client = { | |
108 | .name = "sa", | |
109 | .add = ib_sa_add_one, | |
110 | .remove = ib_sa_remove_one | |
111 | }; | |
112 | ||
113 | static spinlock_t idr_lock; | |
114 | static DEFINE_IDR(query_idr); | |
115 | ||
116 | static spinlock_t tid_lock; | |
117 | static u32 tid; | |
118 | ||
1da177e4 LT |
119 | #define PATH_REC_FIELD(field) \ |
120 | .struct_offset_bytes = offsetof(struct ib_sa_path_rec, field), \ | |
121 | .struct_size_bytes = sizeof ((struct ib_sa_path_rec *) 0)->field, \ | |
122 | .field_name = "sa_path_rec:" #field | |
123 | ||
124 | static const struct ib_field path_rec_table[] = { | |
125 | { RESERVED, | |
126 | .offset_words = 0, | |
127 | .offset_bits = 0, | |
128 | .size_bits = 32 }, | |
129 | { RESERVED, | |
130 | .offset_words = 1, | |
131 | .offset_bits = 0, | |
132 | .size_bits = 32 }, | |
133 | { PATH_REC_FIELD(dgid), | |
134 | .offset_words = 2, | |
135 | .offset_bits = 0, | |
136 | .size_bits = 128 }, | |
137 | { PATH_REC_FIELD(sgid), | |
138 | .offset_words = 6, | |
139 | .offset_bits = 0, | |
140 | .size_bits = 128 }, | |
141 | { PATH_REC_FIELD(dlid), | |
142 | .offset_words = 10, | |
143 | .offset_bits = 0, | |
144 | .size_bits = 16 }, | |
145 | { PATH_REC_FIELD(slid), | |
146 | .offset_words = 10, | |
147 | .offset_bits = 16, | |
148 | .size_bits = 16 }, | |
149 | { PATH_REC_FIELD(raw_traffic), | |
150 | .offset_words = 11, | |
151 | .offset_bits = 0, | |
152 | .size_bits = 1 }, | |
153 | { RESERVED, | |
154 | .offset_words = 11, | |
155 | .offset_bits = 1, | |
156 | .size_bits = 3 }, | |
157 | { PATH_REC_FIELD(flow_label), | |
158 | .offset_words = 11, | |
159 | .offset_bits = 4, | |
160 | .size_bits = 20 }, | |
161 | { PATH_REC_FIELD(hop_limit), | |
162 | .offset_words = 11, | |
163 | .offset_bits = 24, | |
164 | .size_bits = 8 }, | |
165 | { PATH_REC_FIELD(traffic_class), | |
166 | .offset_words = 12, | |
167 | .offset_bits = 0, | |
168 | .size_bits = 8 }, | |
169 | { PATH_REC_FIELD(reversible), | |
170 | .offset_words = 12, | |
171 | .offset_bits = 8, | |
172 | .size_bits = 1 }, | |
173 | { PATH_REC_FIELD(numb_path), | |
174 | .offset_words = 12, | |
175 | .offset_bits = 9, | |
176 | .size_bits = 7 }, | |
177 | { PATH_REC_FIELD(pkey), | |
178 | .offset_words = 12, | |
179 | .offset_bits = 16, | |
180 | .size_bits = 16 }, | |
181 | { RESERVED, | |
182 | .offset_words = 13, | |
183 | .offset_bits = 0, | |
184 | .size_bits = 12 }, | |
185 | { PATH_REC_FIELD(sl), | |
186 | .offset_words = 13, | |
187 | .offset_bits = 12, | |
188 | .size_bits = 4 }, | |
189 | { PATH_REC_FIELD(mtu_selector), | |
190 | .offset_words = 13, | |
191 | .offset_bits = 16, | |
192 | .size_bits = 2 }, | |
193 | { PATH_REC_FIELD(mtu), | |
194 | .offset_words = 13, | |
195 | .offset_bits = 18, | |
196 | .size_bits = 6 }, | |
197 | { PATH_REC_FIELD(rate_selector), | |
198 | .offset_words = 13, | |
199 | .offset_bits = 24, | |
200 | .size_bits = 2 }, | |
201 | { PATH_REC_FIELD(rate), | |
202 | .offset_words = 13, | |
203 | .offset_bits = 26, | |
204 | .size_bits = 6 }, | |
205 | { PATH_REC_FIELD(packet_life_time_selector), | |
206 | .offset_words = 14, | |
207 | .offset_bits = 0, | |
208 | .size_bits = 2 }, | |
209 | { PATH_REC_FIELD(packet_life_time), | |
210 | .offset_words = 14, | |
211 | .offset_bits = 2, | |
212 | .size_bits = 6 }, | |
213 | { PATH_REC_FIELD(preference), | |
214 | .offset_words = 14, | |
215 | .offset_bits = 8, | |
216 | .size_bits = 8 }, | |
217 | { RESERVED, | |
218 | .offset_words = 14, | |
219 | .offset_bits = 16, | |
220 | .size_bits = 48 }, | |
221 | }; | |
222 | ||
223 | #define MCMEMBER_REC_FIELD(field) \ | |
224 | .struct_offset_bytes = offsetof(struct ib_sa_mcmember_rec, field), \ | |
225 | .struct_size_bytes = sizeof ((struct ib_sa_mcmember_rec *) 0)->field, \ | |
226 | .field_name = "sa_mcmember_rec:" #field | |
227 | ||
228 | static const struct ib_field mcmember_rec_table[] = { | |
229 | { MCMEMBER_REC_FIELD(mgid), | |
230 | .offset_words = 0, | |
231 | .offset_bits = 0, | |
232 | .size_bits = 128 }, | |
233 | { MCMEMBER_REC_FIELD(port_gid), | |
234 | .offset_words = 4, | |
235 | .offset_bits = 0, | |
236 | .size_bits = 128 }, | |
237 | { MCMEMBER_REC_FIELD(qkey), | |
238 | .offset_words = 8, | |
239 | .offset_bits = 0, | |
240 | .size_bits = 32 }, | |
241 | { MCMEMBER_REC_FIELD(mlid), | |
242 | .offset_words = 9, | |
243 | .offset_bits = 0, | |
244 | .size_bits = 16 }, | |
245 | { MCMEMBER_REC_FIELD(mtu_selector), | |
246 | .offset_words = 9, | |
247 | .offset_bits = 16, | |
248 | .size_bits = 2 }, | |
249 | { MCMEMBER_REC_FIELD(mtu), | |
250 | .offset_words = 9, | |
251 | .offset_bits = 18, | |
252 | .size_bits = 6 }, | |
253 | { MCMEMBER_REC_FIELD(traffic_class), | |
254 | .offset_words = 9, | |
255 | .offset_bits = 24, | |
256 | .size_bits = 8 }, | |
257 | { MCMEMBER_REC_FIELD(pkey), | |
258 | .offset_words = 10, | |
259 | .offset_bits = 0, | |
260 | .size_bits = 16 }, | |
261 | { MCMEMBER_REC_FIELD(rate_selector), | |
262 | .offset_words = 10, | |
263 | .offset_bits = 16, | |
264 | .size_bits = 2 }, | |
265 | { MCMEMBER_REC_FIELD(rate), | |
266 | .offset_words = 10, | |
267 | .offset_bits = 18, | |
268 | .size_bits = 6 }, | |
269 | { MCMEMBER_REC_FIELD(packet_life_time_selector), | |
270 | .offset_words = 10, | |
271 | .offset_bits = 24, | |
272 | .size_bits = 2 }, | |
273 | { MCMEMBER_REC_FIELD(packet_life_time), | |
274 | .offset_words = 10, | |
275 | .offset_bits = 26, | |
276 | .size_bits = 6 }, | |
277 | { MCMEMBER_REC_FIELD(sl), | |
278 | .offset_words = 11, | |
279 | .offset_bits = 0, | |
280 | .size_bits = 4 }, | |
281 | { MCMEMBER_REC_FIELD(flow_label), | |
282 | .offset_words = 11, | |
283 | .offset_bits = 4, | |
284 | .size_bits = 20 }, | |
285 | { MCMEMBER_REC_FIELD(hop_limit), | |
286 | .offset_words = 11, | |
287 | .offset_bits = 24, | |
288 | .size_bits = 8 }, | |
289 | { MCMEMBER_REC_FIELD(scope), | |
290 | .offset_words = 12, | |
291 | .offset_bits = 0, | |
292 | .size_bits = 4 }, | |
293 | { MCMEMBER_REC_FIELD(join_state), | |
294 | .offset_words = 12, | |
295 | .offset_bits = 4, | |
296 | .size_bits = 4 }, | |
297 | { MCMEMBER_REC_FIELD(proxy_join), | |
298 | .offset_words = 12, | |
299 | .offset_bits = 8, | |
300 | .size_bits = 1 }, | |
301 | { RESERVED, | |
302 | .offset_words = 12, | |
303 | .offset_bits = 9, | |
304 | .size_bits = 23 }, | |
305 | }; | |
306 | ||
cbae32c5 HR |
307 | #define SERVICE_REC_FIELD(field) \ |
308 | .struct_offset_bytes = offsetof(struct ib_sa_service_rec, field), \ | |
309 | .struct_size_bytes = sizeof ((struct ib_sa_service_rec *) 0)->field, \ | |
310 | .field_name = "sa_service_rec:" #field | |
311 | ||
312 | static const struct ib_field service_rec_table[] = { | |
313 | { SERVICE_REC_FIELD(id), | |
314 | .offset_words = 0, | |
315 | .offset_bits = 0, | |
316 | .size_bits = 64 }, | |
317 | { SERVICE_REC_FIELD(gid), | |
318 | .offset_words = 2, | |
319 | .offset_bits = 0, | |
320 | .size_bits = 128 }, | |
321 | { SERVICE_REC_FIELD(pkey), | |
322 | .offset_words = 6, | |
323 | .offset_bits = 0, | |
324 | .size_bits = 16 }, | |
325 | { SERVICE_REC_FIELD(lease), | |
326 | .offset_words = 7, | |
327 | .offset_bits = 0, | |
328 | .size_bits = 32 }, | |
329 | { SERVICE_REC_FIELD(key), | |
330 | .offset_words = 8, | |
331 | .offset_bits = 0, | |
332 | .size_bits = 128 }, | |
333 | { SERVICE_REC_FIELD(name), | |
334 | .offset_words = 12, | |
335 | .offset_bits = 0, | |
336 | .size_bits = 64*8 }, | |
337 | { SERVICE_REC_FIELD(data8), | |
338 | .offset_words = 28, | |
339 | .offset_bits = 0, | |
340 | .size_bits = 16*8 }, | |
341 | { SERVICE_REC_FIELD(data16), | |
342 | .offset_words = 32, | |
343 | .offset_bits = 0, | |
344 | .size_bits = 8*16 }, | |
345 | { SERVICE_REC_FIELD(data32), | |
346 | .offset_words = 36, | |
347 | .offset_bits = 0, | |
348 | .size_bits = 4*32 }, | |
349 | { SERVICE_REC_FIELD(data64), | |
350 | .offset_words = 40, | |
351 | .offset_bits = 0, | |
352 | .size_bits = 2*64 }, | |
353 | }; | |
354 | ||
1da177e4 LT |
355 | static void free_sm_ah(struct kref *kref) |
356 | { | |
357 | struct ib_sa_sm_ah *sm_ah = container_of(kref, struct ib_sa_sm_ah, ref); | |
358 | ||
359 | ib_destroy_ah(sm_ah->ah); | |
360 | kfree(sm_ah); | |
361 | } | |
362 | ||
363 | static void update_sm_ah(void *port_ptr) | |
364 | { | |
365 | struct ib_sa_port *port = port_ptr; | |
366 | struct ib_sa_sm_ah *new_ah, *old_ah; | |
367 | struct ib_port_attr port_attr; | |
368 | struct ib_ah_attr ah_attr; | |
369 | ||
370 | if (ib_query_port(port->agent->device, port->port_num, &port_attr)) { | |
371 | printk(KERN_WARNING "Couldn't query port\n"); | |
372 | return; | |
373 | } | |
374 | ||
375 | new_ah = kmalloc(sizeof *new_ah, GFP_KERNEL); | |
376 | if (!new_ah) { | |
377 | printk(KERN_WARNING "Couldn't allocate new SM AH\n"); | |
378 | return; | |
379 | } | |
380 | ||
381 | kref_init(&new_ah->ref); | |
382 | ||
383 | memset(&ah_attr, 0, sizeof ah_attr); | |
384 | ah_attr.dlid = port_attr.sm_lid; | |
385 | ah_attr.sl = port_attr.sm_sl; | |
386 | ah_attr.port_num = port->port_num; | |
387 | ||
388 | new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr); | |
389 | if (IS_ERR(new_ah->ah)) { | |
390 | printk(KERN_WARNING "Couldn't create new SM AH\n"); | |
391 | kfree(new_ah); | |
392 | return; | |
393 | } | |
394 | ||
395 | spin_lock_irq(&port->ah_lock); | |
396 | old_ah = port->sm_ah; | |
397 | port->sm_ah = new_ah; | |
398 | spin_unlock_irq(&port->ah_lock); | |
399 | ||
400 | if (old_ah) | |
401 | kref_put(&old_ah->ref, free_sm_ah); | |
402 | } | |
403 | ||
404 | static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event) | |
405 | { | |
406 | if (event->event == IB_EVENT_PORT_ERR || | |
407 | event->event == IB_EVENT_PORT_ACTIVE || | |
408 | event->event == IB_EVENT_LID_CHANGE || | |
409 | event->event == IB_EVENT_PKEY_CHANGE || | |
acaea9ee JM |
410 | event->event == IB_EVENT_SM_CHANGE || |
411 | event->event == IB_EVENT_CLIENT_REREGISTER) { | |
1d6801f9 MT |
412 | struct ib_sa_device *sa_dev; |
413 | sa_dev = container_of(handler, typeof(*sa_dev), event_handler); | |
1da177e4 LT |
414 | |
415 | schedule_work(&sa_dev->port[event->element.port_num - | |
416 | sa_dev->start_port].update_task); | |
417 | } | |
418 | } | |
419 | ||
c1a0b23b MT |
420 | void ib_sa_register_client(struct ib_sa_client *client) |
421 | { | |
422 | atomic_set(&client->users, 1); | |
423 | init_completion(&client->comp); | |
424 | } | |
425 | EXPORT_SYMBOL(ib_sa_register_client); | |
426 | ||
427 | static inline void ib_sa_client_get(struct ib_sa_client *client) | |
428 | { | |
429 | atomic_inc(&client->users); | |
430 | } | |
431 | ||
432 | static inline void ib_sa_client_put(struct ib_sa_client *client) | |
433 | { | |
434 | if (atomic_dec_and_test(&client->users)) | |
435 | complete(&client->comp); | |
436 | } | |
437 | ||
438 | void ib_sa_unregister_client(struct ib_sa_client *client) | |
439 | { | |
440 | ib_sa_client_put(client); | |
441 | wait_for_completion(&client->comp); | |
442 | } | |
443 | EXPORT_SYMBOL(ib_sa_unregister_client); | |
444 | ||
1da177e4 LT |
445 | /** |
446 | * ib_sa_cancel_query - try to cancel an SA query | |
447 | * @id:ID of query to cancel | |
448 | * @query:query pointer to cancel | |
449 | * | |
450 | * Try to cancel an SA query. If the id and query don't match up or | |
451 | * the query has already completed, nothing is done. Otherwise the | |
452 | * query is canceled and will complete with a status of -EINTR. | |
453 | */ | |
454 | void ib_sa_cancel_query(int id, struct ib_sa_query *query) | |
455 | { | |
456 | unsigned long flags; | |
457 | struct ib_mad_agent *agent; | |
34816ad9 | 458 | struct ib_mad_send_buf *mad_buf; |
1da177e4 LT |
459 | |
460 | spin_lock_irqsave(&idr_lock, flags); | |
461 | if (idr_find(&query_idr, id) != query) { | |
462 | spin_unlock_irqrestore(&idr_lock, flags); | |
463 | return; | |
464 | } | |
465 | agent = query->port->agent; | |
34816ad9 | 466 | mad_buf = query->mad_buf; |
1da177e4 LT |
467 | spin_unlock_irqrestore(&idr_lock, flags); |
468 | ||
34816ad9 | 469 | ib_cancel_mad(agent, mad_buf); |
1da177e4 LT |
470 | } |
471 | EXPORT_SYMBOL(ib_sa_cancel_query); | |
472 | ||
6d969a47 SH |
473 | int ib_init_ah_from_path(struct ib_device *device, u8 port_num, |
474 | struct ib_sa_path_rec *rec, struct ib_ah_attr *ah_attr) | |
475 | { | |
476 | int ret; | |
477 | u16 gid_index; | |
478 | ||
479 | memset(ah_attr, 0, sizeof *ah_attr); | |
480 | ah_attr->dlid = be16_to_cpu(rec->dlid); | |
481 | ah_attr->sl = rec->sl; | |
482 | ah_attr->src_path_bits = be16_to_cpu(rec->slid) & 0x7f; | |
483 | ah_attr->port_num = port_num; | |
484 | ||
485 | if (rec->hop_limit > 1) { | |
486 | ah_attr->ah_flags = IB_AH_GRH; | |
487 | ah_attr->grh.dgid = rec->dgid; | |
488 | ||
489 | ret = ib_find_cached_gid(device, &rec->sgid, &port_num, | |
490 | &gid_index); | |
491 | if (ret) | |
492 | return ret; | |
493 | ||
ca222c6b SH |
494 | ah_attr->grh.sgid_index = gid_index; |
495 | ah_attr->grh.flow_label = be32_to_cpu(rec->flow_label); | |
496 | ah_attr->grh.hop_limit = rec->hop_limit; | |
6d969a47 SH |
497 | ah_attr->grh.traffic_class = rec->traffic_class; |
498 | } | |
499 | return 0; | |
500 | } | |
501 | EXPORT_SYMBOL(ib_init_ah_from_path); | |
502 | ||
1da177e4 LT |
503 | static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent) |
504 | { | |
505 | unsigned long flags; | |
506 | ||
507 | memset(mad, 0, sizeof *mad); | |
508 | ||
509 | mad->mad_hdr.base_version = IB_MGMT_BASE_VERSION; | |
510 | mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM; | |
511 | mad->mad_hdr.class_version = IB_SA_CLASS_VERSION; | |
512 | ||
513 | spin_lock_irqsave(&tid_lock, flags); | |
514 | mad->mad_hdr.tid = | |
515 | cpu_to_be64(((u64) agent->hi_tid) << 32 | tid++); | |
516 | spin_unlock_irqrestore(&tid_lock, flags); | |
517 | } | |
518 | ||
e322fedf | 519 | static int send_mad(struct ib_sa_query *query, int timeout_ms, gfp_t gfp_mask) |
1da177e4 | 520 | { |
1da177e4 | 521 | unsigned long flags; |
34816ad9 | 522 | int ret, id; |
1da177e4 LT |
523 | |
524 | retry: | |
e322fedf | 525 | if (!idr_pre_get(&query_idr, gfp_mask)) |
1da177e4 LT |
526 | return -ENOMEM; |
527 | spin_lock_irqsave(&idr_lock, flags); | |
34816ad9 | 528 | ret = idr_get_new(&query_idr, query, &id); |
1da177e4 LT |
529 | spin_unlock_irqrestore(&idr_lock, flags); |
530 | if (ret == -EAGAIN) | |
531 | goto retry; | |
532 | if (ret) | |
533 | return ret; | |
534 | ||
34816ad9 SH |
535 | query->mad_buf->timeout_ms = timeout_ms; |
536 | query->mad_buf->context[0] = query; | |
537 | query->id = id; | |
1da177e4 | 538 | |
34816ad9 SH |
539 | spin_lock_irqsave(&query->port->ah_lock, flags); |
540 | kref_get(&query->port->sm_ah->ref); | |
541 | query->sm_ah = query->port->sm_ah; | |
542 | spin_unlock_irqrestore(&query->port->ah_lock, flags); | |
1da177e4 | 543 | |
34816ad9 | 544 | query->mad_buf->ah = query->sm_ah->ah; |
1da177e4 | 545 | |
34816ad9 | 546 | ret = ib_post_send_mad(query->mad_buf, NULL); |
1da177e4 | 547 | if (ret) { |
1da177e4 | 548 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 549 | idr_remove(&query_idr, id); |
1da177e4 | 550 | spin_unlock_irqrestore(&idr_lock, flags); |
34816ad9 SH |
551 | |
552 | kref_put(&query->sm_ah->ref, free_sm_ah); | |
1da177e4 LT |
553 | } |
554 | ||
dae4c1d2 RD |
555 | /* |
556 | * It's not safe to dereference query any more, because the | |
557 | * send may already have completed and freed the query in | |
34816ad9 | 558 | * another context. |
dae4c1d2 | 559 | */ |
34816ad9 | 560 | return ret ? ret : id; |
1da177e4 LT |
561 | } |
562 | ||
563 | static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query, | |
564 | int status, | |
565 | struct ib_sa_mad *mad) | |
566 | { | |
567 | struct ib_sa_path_query *query = | |
568 | container_of(sa_query, struct ib_sa_path_query, sa_query); | |
569 | ||
570 | if (mad) { | |
571 | struct ib_sa_path_rec rec; | |
572 | ||
573 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), | |
574 | mad->data, &rec); | |
575 | query->callback(status, &rec, query->context); | |
576 | } else | |
577 | query->callback(status, NULL, query->context); | |
578 | } | |
579 | ||
580 | static void ib_sa_path_rec_release(struct ib_sa_query *sa_query) | |
581 | { | |
1da177e4 LT |
582 | kfree(container_of(sa_query, struct ib_sa_path_query, sa_query)); |
583 | } | |
584 | ||
585 | /** | |
586 | * ib_sa_path_rec_get - Start a Path get query | |
c1a0b23b | 587 | * @client:SA client |
1da177e4 LT |
588 | * @device:device to send query on |
589 | * @port_num: port number to send query on | |
590 | * @rec:Path Record to send in query | |
591 | * @comp_mask:component mask to send in query | |
592 | * @timeout_ms:time to wait for response | |
593 | * @gfp_mask:GFP mask to use for internal allocations | |
594 | * @callback:function called when query completes, times out or is | |
595 | * canceled | |
596 | * @context:opaque user context passed to callback | |
597 | * @sa_query:query context, used to cancel query | |
598 | * | |
599 | * Send a Path Record Get query to the SA to look up a path. The | |
600 | * callback function will be called when the query completes (or | |
601 | * fails); status is 0 for a successful response, -EINTR if the query | |
602 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
603 | * occurred sending the query. The resp parameter of the callback is | |
604 | * only valid if status is 0. | |
605 | * | |
606 | * If the return value of ib_sa_path_rec_get() is negative, it is an | |
607 | * error code. Otherwise it is a query ID that can be used to cancel | |
608 | * the query. | |
609 | */ | |
c1a0b23b MT |
610 | int ib_sa_path_rec_get(struct ib_sa_client *client, |
611 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
612 | struct ib_sa_path_rec *rec, |
613 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 614 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
615 | void (*callback)(int status, |
616 | struct ib_sa_path_rec *resp, | |
617 | void *context), | |
618 | void *context, | |
619 | struct ib_sa_query **sa_query) | |
620 | { | |
621 | struct ib_sa_path_query *query; | |
622 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
623 | struct ib_sa_port *port; |
624 | struct ib_mad_agent *agent; | |
34816ad9 | 625 | struct ib_sa_mad *mad; |
1da177e4 LT |
626 | int ret; |
627 | ||
56c202d6 RD |
628 | if (!sa_dev) |
629 | return -ENODEV; | |
630 | ||
631 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
632 | agent = port->agent; | |
633 | ||
1da177e4 LT |
634 | query = kmalloc(sizeof *query, gfp_mask); |
635 | if (!query) | |
636 | return -ENOMEM; | |
34816ad9 SH |
637 | |
638 | query->sa_query.mad_buf = ib_create_send_mad(agent, 1, 0, | |
639 | 0, IB_MGMT_SA_HDR, | |
640 | IB_MGMT_SA_DATA, gfp_mask); | |
641 | if (!query->sa_query.mad_buf) { | |
642 | ret = -ENOMEM; | |
643 | goto err1; | |
1da177e4 LT |
644 | } |
645 | ||
c1a0b23b MT |
646 | ib_sa_client_get(client); |
647 | query->sa_query.client = client; | |
648 | query->callback = callback; | |
649 | query->context = context; | |
1da177e4 | 650 | |
34816ad9 SH |
651 | mad = query->sa_query.mad_buf->mad; |
652 | init_mad(mad, agent); | |
1da177e4 | 653 | |
34816ad9 SH |
654 | query->sa_query.callback = callback ? ib_sa_path_rec_callback : NULL; |
655 | query->sa_query.release = ib_sa_path_rec_release; | |
656 | query->sa_query.port = port; | |
657 | mad->mad_hdr.method = IB_MGMT_METHOD_GET; | |
658 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_PATH_REC); | |
659 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 | 660 | |
34816ad9 | 661 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, mad->data); |
1da177e4 LT |
662 | |
663 | *sa_query = &query->sa_query; | |
dae4c1d2 | 664 | |
e322fedf | 665 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
666 | if (ret < 0) |
667 | goto err2; | |
668 | ||
669 | return ret; | |
670 | ||
671 | err2: | |
672 | *sa_query = NULL; | |
c1a0b23b | 673 | ib_sa_client_put(query->sa_query.client); |
34816ad9 | 674 | ib_free_send_mad(query->sa_query.mad_buf); |
1da177e4 | 675 | |
34816ad9 SH |
676 | err1: |
677 | kfree(query); | |
dae4c1d2 | 678 | return ret; |
1da177e4 LT |
679 | } |
680 | EXPORT_SYMBOL(ib_sa_path_rec_get); | |
681 | ||
cbae32c5 HR |
682 | static void ib_sa_service_rec_callback(struct ib_sa_query *sa_query, |
683 | int status, | |
684 | struct ib_sa_mad *mad) | |
685 | { | |
686 | struct ib_sa_service_query *query = | |
687 | container_of(sa_query, struct ib_sa_service_query, sa_query); | |
688 | ||
689 | if (mad) { | |
690 | struct ib_sa_service_rec rec; | |
691 | ||
692 | ib_unpack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
693 | mad->data, &rec); | |
694 | query->callback(status, &rec, query->context); | |
695 | } else | |
696 | query->callback(status, NULL, query->context); | |
697 | } | |
698 | ||
699 | static void ib_sa_service_rec_release(struct ib_sa_query *sa_query) | |
700 | { | |
cbae32c5 HR |
701 | kfree(container_of(sa_query, struct ib_sa_service_query, sa_query)); |
702 | } | |
703 | ||
704 | /** | |
705 | * ib_sa_service_rec_query - Start Service Record operation | |
c1a0b23b | 706 | * @client:SA client |
cbae32c5 HR |
707 | * @device:device to send request on |
708 | * @port_num: port number to send request on | |
709 | * @method:SA method - should be get, set, or delete | |
710 | * @rec:Service Record to send in request | |
711 | * @comp_mask:component mask to send in request | |
712 | * @timeout_ms:time to wait for response | |
713 | * @gfp_mask:GFP mask to use for internal allocations | |
714 | * @callback:function called when request completes, times out or is | |
715 | * canceled | |
716 | * @context:opaque user context passed to callback | |
717 | * @sa_query:request context, used to cancel request | |
718 | * | |
719 | * Send a Service Record set/get/delete to the SA to register, | |
720 | * unregister or query a service record. | |
721 | * The callback function will be called when the request completes (or | |
722 | * fails); status is 0 for a successful response, -EINTR if the query | |
723 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
724 | * occurred sending the query. The resp parameter of the callback is | |
725 | * only valid if status is 0. | |
726 | * | |
727 | * If the return value of ib_sa_service_rec_query() is negative, it is an | |
728 | * error code. Otherwise it is a request ID that can be used to cancel | |
729 | * the query. | |
730 | */ | |
c1a0b23b MT |
731 | int ib_sa_service_rec_query(struct ib_sa_client *client, |
732 | struct ib_device *device, u8 port_num, u8 method, | |
cbae32c5 HR |
733 | struct ib_sa_service_rec *rec, |
734 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 735 | int timeout_ms, gfp_t gfp_mask, |
cbae32c5 HR |
736 | void (*callback)(int status, |
737 | struct ib_sa_service_rec *resp, | |
738 | void *context), | |
739 | void *context, | |
740 | struct ib_sa_query **sa_query) | |
741 | { | |
742 | struct ib_sa_service_query *query; | |
743 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
744 | struct ib_sa_port *port; |
745 | struct ib_mad_agent *agent; | |
34816ad9 | 746 | struct ib_sa_mad *mad; |
cbae32c5 HR |
747 | int ret; |
748 | ||
56c202d6 RD |
749 | if (!sa_dev) |
750 | return -ENODEV; | |
751 | ||
752 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
753 | agent = port->agent; | |
754 | ||
cbae32c5 HR |
755 | if (method != IB_MGMT_METHOD_GET && |
756 | method != IB_MGMT_METHOD_SET && | |
757 | method != IB_SA_METHOD_DELETE) | |
758 | return -EINVAL; | |
759 | ||
760 | query = kmalloc(sizeof *query, gfp_mask); | |
761 | if (!query) | |
762 | return -ENOMEM; | |
34816ad9 SH |
763 | |
764 | query->sa_query.mad_buf = ib_create_send_mad(agent, 1, 0, | |
765 | 0, IB_MGMT_SA_HDR, | |
766 | IB_MGMT_SA_DATA, gfp_mask); | |
767 | if (!query->sa_query.mad_buf) { | |
768 | ret = -ENOMEM; | |
769 | goto err1; | |
cbae32c5 HR |
770 | } |
771 | ||
c1a0b23b MT |
772 | ib_sa_client_get(client); |
773 | query->sa_query.client = client; | |
774 | query->callback = callback; | |
775 | query->context = context; | |
cbae32c5 | 776 | |
34816ad9 SH |
777 | mad = query->sa_query.mad_buf->mad; |
778 | init_mad(mad, agent); | |
cbae32c5 | 779 | |
34816ad9 SH |
780 | query->sa_query.callback = callback ? ib_sa_service_rec_callback : NULL; |
781 | query->sa_query.release = ib_sa_service_rec_release; | |
782 | query->sa_query.port = port; | |
783 | mad->mad_hdr.method = method; | |
784 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_SERVICE_REC); | |
785 | mad->sa_hdr.comp_mask = comp_mask; | |
cbae32c5 HR |
786 | |
787 | ib_pack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
34816ad9 | 788 | rec, mad->data); |
cbae32c5 HR |
789 | |
790 | *sa_query = &query->sa_query; | |
791 | ||
e322fedf | 792 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
793 | if (ret < 0) |
794 | goto err2; | |
795 | ||
796 | return ret; | |
cbae32c5 | 797 | |
34816ad9 SH |
798 | err2: |
799 | *sa_query = NULL; | |
c1a0b23b | 800 | ib_sa_client_put(query->sa_query.client); |
34816ad9 SH |
801 | ib_free_send_mad(query->sa_query.mad_buf); |
802 | ||
803 | err1: | |
804 | kfree(query); | |
cbae32c5 HR |
805 | return ret; |
806 | } | |
807 | EXPORT_SYMBOL(ib_sa_service_rec_query); | |
808 | ||
1da177e4 LT |
809 | static void ib_sa_mcmember_rec_callback(struct ib_sa_query *sa_query, |
810 | int status, | |
811 | struct ib_sa_mad *mad) | |
812 | { | |
813 | struct ib_sa_mcmember_query *query = | |
814 | container_of(sa_query, struct ib_sa_mcmember_query, sa_query); | |
815 | ||
816 | if (mad) { | |
817 | struct ib_sa_mcmember_rec rec; | |
818 | ||
819 | ib_unpack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
820 | mad->data, &rec); | |
821 | query->callback(status, &rec, query->context); | |
822 | } else | |
823 | query->callback(status, NULL, query->context); | |
824 | } | |
825 | ||
826 | static void ib_sa_mcmember_rec_release(struct ib_sa_query *sa_query) | |
827 | { | |
1da177e4 LT |
828 | kfree(container_of(sa_query, struct ib_sa_mcmember_query, sa_query)); |
829 | } | |
830 | ||
c1a0b23b MT |
831 | int ib_sa_mcmember_rec_query(struct ib_sa_client *client, |
832 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
833 | u8 method, |
834 | struct ib_sa_mcmember_rec *rec, | |
835 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 836 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
837 | void (*callback)(int status, |
838 | struct ib_sa_mcmember_rec *resp, | |
839 | void *context), | |
840 | void *context, | |
841 | struct ib_sa_query **sa_query) | |
842 | { | |
843 | struct ib_sa_mcmember_query *query; | |
844 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
845 | struct ib_sa_port *port; |
846 | struct ib_mad_agent *agent; | |
34816ad9 | 847 | struct ib_sa_mad *mad; |
1da177e4 LT |
848 | int ret; |
849 | ||
56c202d6 RD |
850 | if (!sa_dev) |
851 | return -ENODEV; | |
852 | ||
853 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
854 | agent = port->agent; | |
855 | ||
1da177e4 LT |
856 | query = kmalloc(sizeof *query, gfp_mask); |
857 | if (!query) | |
858 | return -ENOMEM; | |
34816ad9 SH |
859 | |
860 | query->sa_query.mad_buf = ib_create_send_mad(agent, 1, 0, | |
861 | 0, IB_MGMT_SA_HDR, | |
862 | IB_MGMT_SA_DATA, gfp_mask); | |
863 | if (!query->sa_query.mad_buf) { | |
864 | ret = -ENOMEM; | |
865 | goto err1; | |
1da177e4 LT |
866 | } |
867 | ||
c1a0b23b MT |
868 | ib_sa_client_get(client); |
869 | query->sa_query.client = client; | |
870 | query->callback = callback; | |
871 | query->context = context; | |
1da177e4 | 872 | |
34816ad9 SH |
873 | mad = query->sa_query.mad_buf->mad; |
874 | init_mad(mad, agent); | |
1da177e4 | 875 | |
34816ad9 SH |
876 | query->sa_query.callback = callback ? ib_sa_mcmember_rec_callback : NULL; |
877 | query->sa_query.release = ib_sa_mcmember_rec_release; | |
878 | query->sa_query.port = port; | |
879 | mad->mad_hdr.method = method; | |
880 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC); | |
881 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 LT |
882 | |
883 | ib_pack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
34816ad9 | 884 | rec, mad->data); |
1da177e4 LT |
885 | |
886 | *sa_query = &query->sa_query; | |
dae4c1d2 | 887 | |
e322fedf | 888 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
889 | if (ret < 0) |
890 | goto err2; | |
1da177e4 | 891 | |
dae4c1d2 | 892 | return ret; |
34816ad9 SH |
893 | |
894 | err2: | |
895 | *sa_query = NULL; | |
c1a0b23b | 896 | ib_sa_client_put(query->sa_query.client); |
34816ad9 SH |
897 | ib_free_send_mad(query->sa_query.mad_buf); |
898 | ||
899 | err1: | |
900 | kfree(query); | |
901 | return ret; | |
1da177e4 LT |
902 | } |
903 | EXPORT_SYMBOL(ib_sa_mcmember_rec_query); | |
904 | ||
905 | static void send_handler(struct ib_mad_agent *agent, | |
906 | struct ib_mad_send_wc *mad_send_wc) | |
907 | { | |
34816ad9 | 908 | struct ib_sa_query *query = mad_send_wc->send_buf->context[0]; |
1da177e4 LT |
909 | unsigned long flags; |
910 | ||
e4f50f00 RD |
911 | if (query->callback) |
912 | switch (mad_send_wc->status) { | |
913 | case IB_WC_SUCCESS: | |
914 | /* No callback -- already got recv */ | |
915 | break; | |
916 | case IB_WC_RESP_TIMEOUT_ERR: | |
917 | query->callback(query, -ETIMEDOUT, NULL); | |
918 | break; | |
919 | case IB_WC_WR_FLUSH_ERR: | |
920 | query->callback(query, -EINTR, NULL); | |
921 | break; | |
922 | default: | |
923 | query->callback(query, -EIO, NULL); | |
924 | break; | |
925 | } | |
1da177e4 | 926 | |
1da177e4 | 927 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 928 | idr_remove(&query_idr, query->id); |
1da177e4 | 929 | spin_unlock_irqrestore(&idr_lock, flags); |
34816ad9 | 930 | |
3cd96564 | 931 | ib_free_send_mad(mad_send_wc->send_buf); |
34816ad9 | 932 | kref_put(&query->sm_ah->ref, free_sm_ah); |
c1a0b23b | 933 | ib_sa_client_put(query->client); |
34816ad9 | 934 | query->release(query); |
1da177e4 LT |
935 | } |
936 | ||
937 | static void recv_handler(struct ib_mad_agent *mad_agent, | |
938 | struct ib_mad_recv_wc *mad_recv_wc) | |
939 | { | |
940 | struct ib_sa_query *query; | |
34816ad9 | 941 | struct ib_mad_send_buf *mad_buf; |
1da177e4 | 942 | |
34816ad9 SH |
943 | mad_buf = (void *) (unsigned long) mad_recv_wc->wc->wr_id; |
944 | query = mad_buf->context[0]; | |
1da177e4 | 945 | |
34816ad9 | 946 | if (query->callback) { |
1da177e4 LT |
947 | if (mad_recv_wc->wc->status == IB_WC_SUCCESS) |
948 | query->callback(query, | |
949 | mad_recv_wc->recv_buf.mad->mad_hdr.status ? | |
950 | -EINVAL : 0, | |
951 | (struct ib_sa_mad *) mad_recv_wc->recv_buf.mad); | |
952 | else | |
953 | query->callback(query, -EIO, NULL); | |
954 | } | |
955 | ||
956 | ib_free_recv_mad(mad_recv_wc); | |
957 | } | |
958 | ||
959 | static void ib_sa_add_one(struct ib_device *device) | |
960 | { | |
961 | struct ib_sa_device *sa_dev; | |
962 | int s, e, i; | |
963 | ||
07ebafba TT |
964 | if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB) |
965 | return; | |
966 | ||
967 | if (device->node_type == RDMA_NODE_IB_SWITCH) | |
1da177e4 LT |
968 | s = e = 0; |
969 | else { | |
970 | s = 1; | |
971 | e = device->phys_port_cnt; | |
972 | } | |
973 | ||
974 | sa_dev = kmalloc(sizeof *sa_dev + | |
975 | (e - s + 1) * sizeof (struct ib_sa_port), | |
976 | GFP_KERNEL); | |
977 | if (!sa_dev) | |
978 | return; | |
979 | ||
980 | sa_dev->start_port = s; | |
981 | sa_dev->end_port = e; | |
982 | ||
983 | for (i = 0; i <= e - s; ++i) { | |
1da177e4 LT |
984 | sa_dev->port[i].sm_ah = NULL; |
985 | sa_dev->port[i].port_num = i + s; | |
986 | spin_lock_init(&sa_dev->port[i].ah_lock); | |
987 | ||
988 | sa_dev->port[i].agent = | |
989 | ib_register_mad_agent(device, i + s, IB_QPT_GSI, | |
990 | NULL, 0, send_handler, | |
991 | recv_handler, sa_dev); | |
992 | if (IS_ERR(sa_dev->port[i].agent)) | |
993 | goto err; | |
994 | ||
1da177e4 LT |
995 | INIT_WORK(&sa_dev->port[i].update_task, |
996 | update_sm_ah, &sa_dev->port[i]); | |
997 | } | |
998 | ||
999 | ib_set_client_data(device, &sa_client, sa_dev); | |
1000 | ||
1001 | /* | |
1002 | * We register our event handler after everything is set up, | |
1003 | * and then update our cached info after the event handler is | |
1004 | * registered to avoid any problems if a port changes state | |
1005 | * during our initialization. | |
1006 | */ | |
1007 | ||
1008 | INIT_IB_EVENT_HANDLER(&sa_dev->event_handler, device, ib_sa_event); | |
1009 | if (ib_register_event_handler(&sa_dev->event_handler)) | |
1010 | goto err; | |
1011 | ||
1012 | for (i = 0; i <= e - s; ++i) | |
1013 | update_sm_ah(&sa_dev->port[i]); | |
1014 | ||
1015 | return; | |
1016 | ||
1017 | err: | |
b82cab6b | 1018 | while (--i >= 0) |
1da177e4 | 1019 | ib_unregister_mad_agent(sa_dev->port[i].agent); |
1da177e4 LT |
1020 | |
1021 | kfree(sa_dev); | |
1022 | ||
1023 | return; | |
1024 | } | |
1025 | ||
1026 | static void ib_sa_remove_one(struct ib_device *device) | |
1027 | { | |
1028 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
1029 | int i; | |
1030 | ||
1031 | if (!sa_dev) | |
1032 | return; | |
1033 | ||
1034 | ib_unregister_event_handler(&sa_dev->event_handler); | |
1035 | ||
0f47ae0b MT |
1036 | flush_scheduled_work(); |
1037 | ||
1da177e4 LT |
1038 | for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) { |
1039 | ib_unregister_mad_agent(sa_dev->port[i].agent); | |
1040 | kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah); | |
1041 | } | |
1042 | ||
1043 | kfree(sa_dev); | |
1044 | } | |
1045 | ||
1046 | static int __init ib_sa_init(void) | |
1047 | { | |
1048 | int ret; | |
1049 | ||
1050 | spin_lock_init(&idr_lock); | |
1051 | spin_lock_init(&tid_lock); | |
1052 | ||
1053 | get_random_bytes(&tid, sizeof tid); | |
1054 | ||
1055 | ret = ib_register_client(&sa_client); | |
1056 | if (ret) | |
1057 | printk(KERN_ERR "Couldn't register ib_sa client\n"); | |
1058 | ||
1059 | return ret; | |
1060 | } | |
1061 | ||
1062 | static void __exit ib_sa_cleanup(void) | |
1063 | { | |
1064 | ib_unregister_client(&sa_client); | |
5d7edb3c | 1065 | idr_destroy(&query_idr); |
1da177e4 LT |
1066 | } |
1067 | ||
1068 | module_init(ib_sa_init); | |
1069 | module_exit(ib_sa_cleanup); |