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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. | |
43506d95 | 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> | |
1da177e4 LT |
43 | #include <linux/dma-mapping.h> |
44 | #include <linux/kref.h> | |
45 | #include <linux/idr.h> | |
4e57b681 | 46 | #include <linux/workqueue.h> |
1da177e4 | 47 | |
a4d61e84 | 48 | #include <rdma/ib_pack.h> |
6d969a47 | 49 | #include <rdma/ib_cache.h> |
faec2f7b | 50 | #include "sa.h" |
1da177e4 LT |
51 | |
52 | MODULE_AUTHOR("Roland Dreier"); | |
53 | MODULE_DESCRIPTION("InfiniBand subnet administration query support"); | |
54 | MODULE_LICENSE("Dual BSD/GPL"); | |
55 | ||
1da177e4 LT |
56 | struct ib_sa_sm_ah { |
57 | struct ib_ah *ah; | |
58 | struct kref ref; | |
2aec5c60 | 59 | u16 pkey_index; |
d0e7bb14 | 60 | u8 src_path_mask; |
1da177e4 LT |
61 | }; |
62 | ||
63 | struct ib_sa_port { | |
64 | struct ib_mad_agent *agent; | |
1da177e4 LT |
65 | struct ib_sa_sm_ah *sm_ah; |
66 | struct work_struct update_task; | |
67 | spinlock_t ah_lock; | |
68 | u8 port_num; | |
69 | }; | |
70 | ||
71 | struct ib_sa_device { | |
72 | int start_port, end_port; | |
73 | struct ib_event_handler event_handler; | |
74 | struct ib_sa_port port[0]; | |
75 | }; | |
76 | ||
77 | struct ib_sa_query { | |
78 | void (*callback)(struct ib_sa_query *, int, struct ib_sa_mad *); | |
79 | void (*release)(struct ib_sa_query *); | |
c1a0b23b | 80 | struct ib_sa_client *client; |
34816ad9 SH |
81 | struct ib_sa_port *port; |
82 | struct ib_mad_send_buf *mad_buf; | |
83 | struct ib_sa_sm_ah *sm_ah; | |
84 | int id; | |
1da177e4 LT |
85 | }; |
86 | ||
cbae32c5 HR |
87 | struct ib_sa_service_query { |
88 | void (*callback)(int, struct ib_sa_service_rec *, void *); | |
89 | void *context; | |
90 | struct ib_sa_query sa_query; | |
91 | }; | |
92 | ||
1da177e4 LT |
93 | struct ib_sa_path_query { |
94 | void (*callback)(int, struct ib_sa_path_rec *, void *); | |
95 | void *context; | |
96 | struct ib_sa_query sa_query; | |
97 | }; | |
98 | ||
99 | struct ib_sa_mcmember_query { | |
100 | void (*callback)(int, struct ib_sa_mcmember_rec *, void *); | |
101 | void *context; | |
102 | struct ib_sa_query sa_query; | |
103 | }; | |
104 | ||
105 | static void ib_sa_add_one(struct ib_device *device); | |
106 | static void ib_sa_remove_one(struct ib_device *device); | |
107 | ||
108 | static struct ib_client sa_client = { | |
109 | .name = "sa", | |
110 | .add = ib_sa_add_one, | |
111 | .remove = ib_sa_remove_one | |
112 | }; | |
113 | ||
114 | static spinlock_t idr_lock; | |
115 | static DEFINE_IDR(query_idr); | |
116 | ||
117 | static spinlock_t tid_lock; | |
118 | static u32 tid; | |
119 | ||
1da177e4 LT |
120 | #define PATH_REC_FIELD(field) \ |
121 | .struct_offset_bytes = offsetof(struct ib_sa_path_rec, field), \ | |
122 | .struct_size_bytes = sizeof ((struct ib_sa_path_rec *) 0)->field, \ | |
123 | .field_name = "sa_path_rec:" #field | |
124 | ||
125 | static const struct ib_field path_rec_table[] = { | |
126 | { RESERVED, | |
127 | .offset_words = 0, | |
128 | .offset_bits = 0, | |
129 | .size_bits = 32 }, | |
130 | { RESERVED, | |
131 | .offset_words = 1, | |
132 | .offset_bits = 0, | |
133 | .size_bits = 32 }, | |
134 | { PATH_REC_FIELD(dgid), | |
135 | .offset_words = 2, | |
136 | .offset_bits = 0, | |
137 | .size_bits = 128 }, | |
138 | { PATH_REC_FIELD(sgid), | |
139 | .offset_words = 6, | |
140 | .offset_bits = 0, | |
141 | .size_bits = 128 }, | |
142 | { PATH_REC_FIELD(dlid), | |
143 | .offset_words = 10, | |
144 | .offset_bits = 0, | |
145 | .size_bits = 16 }, | |
146 | { PATH_REC_FIELD(slid), | |
147 | .offset_words = 10, | |
148 | .offset_bits = 16, | |
149 | .size_bits = 16 }, | |
150 | { PATH_REC_FIELD(raw_traffic), | |
151 | .offset_words = 11, | |
152 | .offset_bits = 0, | |
153 | .size_bits = 1 }, | |
154 | { RESERVED, | |
155 | .offset_words = 11, | |
156 | .offset_bits = 1, | |
157 | .size_bits = 3 }, | |
158 | { PATH_REC_FIELD(flow_label), | |
159 | .offset_words = 11, | |
160 | .offset_bits = 4, | |
161 | .size_bits = 20 }, | |
162 | { PATH_REC_FIELD(hop_limit), | |
163 | .offset_words = 11, | |
164 | .offset_bits = 24, | |
165 | .size_bits = 8 }, | |
166 | { PATH_REC_FIELD(traffic_class), | |
167 | .offset_words = 12, | |
168 | .offset_bits = 0, | |
169 | .size_bits = 8 }, | |
170 | { PATH_REC_FIELD(reversible), | |
171 | .offset_words = 12, | |
172 | .offset_bits = 8, | |
173 | .size_bits = 1 }, | |
174 | { PATH_REC_FIELD(numb_path), | |
175 | .offset_words = 12, | |
176 | .offset_bits = 9, | |
177 | .size_bits = 7 }, | |
178 | { PATH_REC_FIELD(pkey), | |
179 | .offset_words = 12, | |
180 | .offset_bits = 16, | |
181 | .size_bits = 16 }, | |
182 | { RESERVED, | |
183 | .offset_words = 13, | |
184 | .offset_bits = 0, | |
185 | .size_bits = 12 }, | |
186 | { PATH_REC_FIELD(sl), | |
187 | .offset_words = 13, | |
188 | .offset_bits = 12, | |
189 | .size_bits = 4 }, | |
190 | { PATH_REC_FIELD(mtu_selector), | |
191 | .offset_words = 13, | |
192 | .offset_bits = 16, | |
193 | .size_bits = 2 }, | |
194 | { PATH_REC_FIELD(mtu), | |
195 | .offset_words = 13, | |
196 | .offset_bits = 18, | |
197 | .size_bits = 6 }, | |
198 | { PATH_REC_FIELD(rate_selector), | |
199 | .offset_words = 13, | |
200 | .offset_bits = 24, | |
201 | .size_bits = 2 }, | |
202 | { PATH_REC_FIELD(rate), | |
203 | .offset_words = 13, | |
204 | .offset_bits = 26, | |
205 | .size_bits = 6 }, | |
206 | { PATH_REC_FIELD(packet_life_time_selector), | |
207 | .offset_words = 14, | |
208 | .offset_bits = 0, | |
209 | .size_bits = 2 }, | |
210 | { PATH_REC_FIELD(packet_life_time), | |
211 | .offset_words = 14, | |
212 | .offset_bits = 2, | |
213 | .size_bits = 6 }, | |
214 | { PATH_REC_FIELD(preference), | |
215 | .offset_words = 14, | |
216 | .offset_bits = 8, | |
217 | .size_bits = 8 }, | |
218 | { RESERVED, | |
219 | .offset_words = 14, | |
220 | .offset_bits = 16, | |
221 | .size_bits = 48 }, | |
222 | }; | |
223 | ||
224 | #define MCMEMBER_REC_FIELD(field) \ | |
225 | .struct_offset_bytes = offsetof(struct ib_sa_mcmember_rec, field), \ | |
226 | .struct_size_bytes = sizeof ((struct ib_sa_mcmember_rec *) 0)->field, \ | |
227 | .field_name = "sa_mcmember_rec:" #field | |
228 | ||
229 | static const struct ib_field mcmember_rec_table[] = { | |
230 | { MCMEMBER_REC_FIELD(mgid), | |
231 | .offset_words = 0, | |
232 | .offset_bits = 0, | |
233 | .size_bits = 128 }, | |
234 | { MCMEMBER_REC_FIELD(port_gid), | |
235 | .offset_words = 4, | |
236 | .offset_bits = 0, | |
237 | .size_bits = 128 }, | |
238 | { MCMEMBER_REC_FIELD(qkey), | |
239 | .offset_words = 8, | |
240 | .offset_bits = 0, | |
241 | .size_bits = 32 }, | |
242 | { MCMEMBER_REC_FIELD(mlid), | |
243 | .offset_words = 9, | |
244 | .offset_bits = 0, | |
245 | .size_bits = 16 }, | |
246 | { MCMEMBER_REC_FIELD(mtu_selector), | |
247 | .offset_words = 9, | |
248 | .offset_bits = 16, | |
249 | .size_bits = 2 }, | |
250 | { MCMEMBER_REC_FIELD(mtu), | |
251 | .offset_words = 9, | |
252 | .offset_bits = 18, | |
253 | .size_bits = 6 }, | |
254 | { MCMEMBER_REC_FIELD(traffic_class), | |
255 | .offset_words = 9, | |
256 | .offset_bits = 24, | |
257 | .size_bits = 8 }, | |
258 | { MCMEMBER_REC_FIELD(pkey), | |
259 | .offset_words = 10, | |
260 | .offset_bits = 0, | |
261 | .size_bits = 16 }, | |
262 | { MCMEMBER_REC_FIELD(rate_selector), | |
263 | .offset_words = 10, | |
264 | .offset_bits = 16, | |
265 | .size_bits = 2 }, | |
266 | { MCMEMBER_REC_FIELD(rate), | |
267 | .offset_words = 10, | |
268 | .offset_bits = 18, | |
269 | .size_bits = 6 }, | |
270 | { MCMEMBER_REC_FIELD(packet_life_time_selector), | |
271 | .offset_words = 10, | |
272 | .offset_bits = 24, | |
273 | .size_bits = 2 }, | |
274 | { MCMEMBER_REC_FIELD(packet_life_time), | |
275 | .offset_words = 10, | |
276 | .offset_bits = 26, | |
277 | .size_bits = 6 }, | |
278 | { MCMEMBER_REC_FIELD(sl), | |
279 | .offset_words = 11, | |
280 | .offset_bits = 0, | |
281 | .size_bits = 4 }, | |
282 | { MCMEMBER_REC_FIELD(flow_label), | |
283 | .offset_words = 11, | |
284 | .offset_bits = 4, | |
285 | .size_bits = 20 }, | |
286 | { MCMEMBER_REC_FIELD(hop_limit), | |
287 | .offset_words = 11, | |
288 | .offset_bits = 24, | |
289 | .size_bits = 8 }, | |
290 | { MCMEMBER_REC_FIELD(scope), | |
291 | .offset_words = 12, | |
292 | .offset_bits = 0, | |
293 | .size_bits = 4 }, | |
294 | { MCMEMBER_REC_FIELD(join_state), | |
295 | .offset_words = 12, | |
296 | .offset_bits = 4, | |
297 | .size_bits = 4 }, | |
298 | { MCMEMBER_REC_FIELD(proxy_join), | |
299 | .offset_words = 12, | |
300 | .offset_bits = 8, | |
301 | .size_bits = 1 }, | |
302 | { RESERVED, | |
303 | .offset_words = 12, | |
304 | .offset_bits = 9, | |
305 | .size_bits = 23 }, | |
306 | }; | |
307 | ||
cbae32c5 HR |
308 | #define SERVICE_REC_FIELD(field) \ |
309 | .struct_offset_bytes = offsetof(struct ib_sa_service_rec, field), \ | |
310 | .struct_size_bytes = sizeof ((struct ib_sa_service_rec *) 0)->field, \ | |
311 | .field_name = "sa_service_rec:" #field | |
312 | ||
313 | static const struct ib_field service_rec_table[] = { | |
314 | { SERVICE_REC_FIELD(id), | |
315 | .offset_words = 0, | |
316 | .offset_bits = 0, | |
317 | .size_bits = 64 }, | |
318 | { SERVICE_REC_FIELD(gid), | |
319 | .offset_words = 2, | |
320 | .offset_bits = 0, | |
321 | .size_bits = 128 }, | |
322 | { SERVICE_REC_FIELD(pkey), | |
323 | .offset_words = 6, | |
324 | .offset_bits = 0, | |
325 | .size_bits = 16 }, | |
326 | { SERVICE_REC_FIELD(lease), | |
327 | .offset_words = 7, | |
328 | .offset_bits = 0, | |
329 | .size_bits = 32 }, | |
330 | { SERVICE_REC_FIELD(key), | |
331 | .offset_words = 8, | |
332 | .offset_bits = 0, | |
333 | .size_bits = 128 }, | |
334 | { SERVICE_REC_FIELD(name), | |
335 | .offset_words = 12, | |
336 | .offset_bits = 0, | |
337 | .size_bits = 64*8 }, | |
338 | { SERVICE_REC_FIELD(data8), | |
339 | .offset_words = 28, | |
340 | .offset_bits = 0, | |
341 | .size_bits = 16*8 }, | |
342 | { SERVICE_REC_FIELD(data16), | |
343 | .offset_words = 32, | |
344 | .offset_bits = 0, | |
345 | .size_bits = 8*16 }, | |
346 | { SERVICE_REC_FIELD(data32), | |
347 | .offset_words = 36, | |
348 | .offset_bits = 0, | |
349 | .size_bits = 4*32 }, | |
350 | { SERVICE_REC_FIELD(data64), | |
351 | .offset_words = 40, | |
352 | .offset_bits = 0, | |
353 | .size_bits = 2*64 }, | |
354 | }; | |
355 | ||
1da177e4 LT |
356 | static void free_sm_ah(struct kref *kref) |
357 | { | |
358 | struct ib_sa_sm_ah *sm_ah = container_of(kref, struct ib_sa_sm_ah, ref); | |
359 | ||
360 | ib_destroy_ah(sm_ah->ah); | |
361 | kfree(sm_ah); | |
362 | } | |
363 | ||
c4028958 | 364 | static void update_sm_ah(struct work_struct *work) |
1da177e4 | 365 | { |
c4028958 DH |
366 | struct ib_sa_port *port = |
367 | container_of(work, struct ib_sa_port, update_task); | |
1da177e4 LT |
368 | struct ib_sa_sm_ah *new_ah, *old_ah; |
369 | struct ib_port_attr port_attr; | |
370 | struct ib_ah_attr ah_attr; | |
371 | ||
372 | if (ib_query_port(port->agent->device, port->port_num, &port_attr)) { | |
373 | printk(KERN_WARNING "Couldn't query port\n"); | |
374 | return; | |
375 | } | |
376 | ||
377 | new_ah = kmalloc(sizeof *new_ah, GFP_KERNEL); | |
378 | if (!new_ah) { | |
379 | printk(KERN_WARNING "Couldn't allocate new SM AH\n"); | |
380 | return; | |
381 | } | |
382 | ||
383 | kref_init(&new_ah->ref); | |
d0e7bb14 | 384 | new_ah->src_path_mask = (1 << port_attr.lmc) - 1; |
1da177e4 | 385 | |
2aec5c60 SH |
386 | new_ah->pkey_index = 0; |
387 | if (ib_find_pkey(port->agent->device, port->port_num, | |
53998910 | 388 | IB_DEFAULT_PKEY_FULL, &new_ah->pkey_index)) |
2aec5c60 SH |
389 | printk(KERN_ERR "Couldn't find index for default PKey\n"); |
390 | ||
1da177e4 LT |
391 | memset(&ah_attr, 0, sizeof ah_attr); |
392 | ah_attr.dlid = port_attr.sm_lid; | |
393 | ah_attr.sl = port_attr.sm_sl; | |
394 | ah_attr.port_num = port->port_num; | |
395 | ||
396 | new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr); | |
397 | if (IS_ERR(new_ah->ah)) { | |
398 | printk(KERN_WARNING "Couldn't create new SM AH\n"); | |
399 | kfree(new_ah); | |
400 | return; | |
401 | } | |
402 | ||
403 | spin_lock_irq(&port->ah_lock); | |
404 | old_ah = port->sm_ah; | |
405 | port->sm_ah = new_ah; | |
406 | spin_unlock_irq(&port->ah_lock); | |
407 | ||
408 | if (old_ah) | |
409 | kref_put(&old_ah->ref, free_sm_ah); | |
410 | } | |
411 | ||
412 | static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event) | |
413 | { | |
414 | if (event->event == IB_EVENT_PORT_ERR || | |
415 | event->event == IB_EVENT_PORT_ACTIVE || | |
416 | event->event == IB_EVENT_LID_CHANGE || | |
417 | event->event == IB_EVENT_PKEY_CHANGE || | |
acaea9ee JM |
418 | event->event == IB_EVENT_SM_CHANGE || |
419 | event->event == IB_EVENT_CLIENT_REREGISTER) { | |
1d6801f9 MT |
420 | struct ib_sa_device *sa_dev; |
421 | sa_dev = container_of(handler, typeof(*sa_dev), event_handler); | |
1da177e4 LT |
422 | |
423 | schedule_work(&sa_dev->port[event->element.port_num - | |
424 | sa_dev->start_port].update_task); | |
425 | } | |
426 | } | |
427 | ||
c1a0b23b MT |
428 | void ib_sa_register_client(struct ib_sa_client *client) |
429 | { | |
430 | atomic_set(&client->users, 1); | |
431 | init_completion(&client->comp); | |
432 | } | |
433 | EXPORT_SYMBOL(ib_sa_register_client); | |
434 | ||
c1a0b23b MT |
435 | void ib_sa_unregister_client(struct ib_sa_client *client) |
436 | { | |
437 | ib_sa_client_put(client); | |
438 | wait_for_completion(&client->comp); | |
439 | } | |
440 | EXPORT_SYMBOL(ib_sa_unregister_client); | |
441 | ||
1da177e4 LT |
442 | /** |
443 | * ib_sa_cancel_query - try to cancel an SA query | |
444 | * @id:ID of query to cancel | |
445 | * @query:query pointer to cancel | |
446 | * | |
447 | * Try to cancel an SA query. If the id and query don't match up or | |
448 | * the query has already completed, nothing is done. Otherwise the | |
449 | * query is canceled and will complete with a status of -EINTR. | |
450 | */ | |
451 | void ib_sa_cancel_query(int id, struct ib_sa_query *query) | |
452 | { | |
453 | unsigned long flags; | |
454 | struct ib_mad_agent *agent; | |
34816ad9 | 455 | struct ib_mad_send_buf *mad_buf; |
1da177e4 LT |
456 | |
457 | spin_lock_irqsave(&idr_lock, flags); | |
458 | if (idr_find(&query_idr, id) != query) { | |
459 | spin_unlock_irqrestore(&idr_lock, flags); | |
460 | return; | |
461 | } | |
462 | agent = query->port->agent; | |
34816ad9 | 463 | mad_buf = query->mad_buf; |
1da177e4 LT |
464 | spin_unlock_irqrestore(&idr_lock, flags); |
465 | ||
34816ad9 | 466 | ib_cancel_mad(agent, mad_buf); |
1da177e4 LT |
467 | } |
468 | EXPORT_SYMBOL(ib_sa_cancel_query); | |
469 | ||
d0e7bb14 SH |
470 | static u8 get_src_path_mask(struct ib_device *device, u8 port_num) |
471 | { | |
472 | struct ib_sa_device *sa_dev; | |
473 | struct ib_sa_port *port; | |
474 | unsigned long flags; | |
475 | u8 src_path_mask; | |
476 | ||
477 | sa_dev = ib_get_client_data(device, &sa_client); | |
478 | if (!sa_dev) | |
479 | return 0x7f; | |
480 | ||
481 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
482 | spin_lock_irqsave(&port->ah_lock, flags); | |
483 | src_path_mask = port->sm_ah ? port->sm_ah->src_path_mask : 0x7f; | |
484 | spin_unlock_irqrestore(&port->ah_lock, flags); | |
485 | ||
486 | return src_path_mask; | |
487 | } | |
488 | ||
6d969a47 SH |
489 | int ib_init_ah_from_path(struct ib_device *device, u8 port_num, |
490 | struct ib_sa_path_rec *rec, struct ib_ah_attr *ah_attr) | |
491 | { | |
492 | int ret; | |
493 | u16 gid_index; | |
494 | ||
495 | memset(ah_attr, 0, sizeof *ah_attr); | |
496 | ah_attr->dlid = be16_to_cpu(rec->dlid); | |
497 | ah_attr->sl = rec->sl; | |
d0e7bb14 SH |
498 | ah_attr->src_path_bits = be16_to_cpu(rec->slid) & |
499 | get_src_path_mask(device, port_num); | |
6d969a47 | 500 | ah_attr->port_num = port_num; |
7084f842 | 501 | ah_attr->static_rate = rec->rate; |
6d969a47 SH |
502 | |
503 | if (rec->hop_limit > 1) { | |
504 | ah_attr->ah_flags = IB_AH_GRH; | |
505 | ah_attr->grh.dgid = rec->dgid; | |
506 | ||
507 | ret = ib_find_cached_gid(device, &rec->sgid, &port_num, | |
508 | &gid_index); | |
509 | if (ret) | |
510 | return ret; | |
511 | ||
ca222c6b SH |
512 | ah_attr->grh.sgid_index = gid_index; |
513 | ah_attr->grh.flow_label = be32_to_cpu(rec->flow_label); | |
514 | ah_attr->grh.hop_limit = rec->hop_limit; | |
6d969a47 SH |
515 | ah_attr->grh.traffic_class = rec->traffic_class; |
516 | } | |
517 | return 0; | |
518 | } | |
519 | EXPORT_SYMBOL(ib_init_ah_from_path); | |
520 | ||
2aec5c60 SH |
521 | static int alloc_mad(struct ib_sa_query *query, gfp_t gfp_mask) |
522 | { | |
523 | unsigned long flags; | |
524 | ||
525 | spin_lock_irqsave(&query->port->ah_lock, flags); | |
526 | kref_get(&query->port->sm_ah->ref); | |
527 | query->sm_ah = query->port->sm_ah; | |
528 | spin_unlock_irqrestore(&query->port->ah_lock, flags); | |
529 | ||
530 | query->mad_buf = ib_create_send_mad(query->port->agent, 1, | |
531 | query->sm_ah->pkey_index, | |
532 | 0, IB_MGMT_SA_HDR, IB_MGMT_SA_DATA, | |
533 | gfp_mask); | |
534 | if (!query->mad_buf) { | |
535 | kref_put(&query->sm_ah->ref, free_sm_ah); | |
536 | return -ENOMEM; | |
537 | } | |
538 | ||
539 | query->mad_buf->ah = query->sm_ah->ah; | |
540 | ||
541 | return 0; | |
542 | } | |
543 | ||
544 | static void free_mad(struct ib_sa_query *query) | |
545 | { | |
546 | ib_free_send_mad(query->mad_buf); | |
547 | kref_put(&query->sm_ah->ref, free_sm_ah); | |
548 | } | |
549 | ||
1da177e4 LT |
550 | static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent) |
551 | { | |
552 | unsigned long flags; | |
553 | ||
554 | memset(mad, 0, sizeof *mad); | |
555 | ||
556 | mad->mad_hdr.base_version = IB_MGMT_BASE_VERSION; | |
557 | mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM; | |
558 | mad->mad_hdr.class_version = IB_SA_CLASS_VERSION; | |
559 | ||
560 | spin_lock_irqsave(&tid_lock, flags); | |
561 | mad->mad_hdr.tid = | |
562 | cpu_to_be64(((u64) agent->hi_tid) << 32 | tid++); | |
563 | spin_unlock_irqrestore(&tid_lock, flags); | |
564 | } | |
565 | ||
e322fedf | 566 | static int send_mad(struct ib_sa_query *query, int timeout_ms, gfp_t gfp_mask) |
1da177e4 | 567 | { |
1da177e4 | 568 | unsigned long flags; |
34816ad9 | 569 | int ret, id; |
1da177e4 LT |
570 | |
571 | retry: | |
e322fedf | 572 | if (!idr_pre_get(&query_idr, gfp_mask)) |
1da177e4 LT |
573 | return -ENOMEM; |
574 | spin_lock_irqsave(&idr_lock, flags); | |
34816ad9 | 575 | ret = idr_get_new(&query_idr, query, &id); |
1da177e4 LT |
576 | spin_unlock_irqrestore(&idr_lock, flags); |
577 | if (ret == -EAGAIN) | |
578 | goto retry; | |
579 | if (ret) | |
580 | return ret; | |
581 | ||
34816ad9 SH |
582 | query->mad_buf->timeout_ms = timeout_ms; |
583 | query->mad_buf->context[0] = query; | |
584 | query->id = id; | |
1da177e4 | 585 | |
34816ad9 | 586 | ret = ib_post_send_mad(query->mad_buf, NULL); |
1da177e4 | 587 | if (ret) { |
1da177e4 | 588 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 589 | idr_remove(&query_idr, id); |
1da177e4 LT |
590 | spin_unlock_irqrestore(&idr_lock, flags); |
591 | } | |
592 | ||
dae4c1d2 RD |
593 | /* |
594 | * It's not safe to dereference query any more, because the | |
595 | * send may already have completed and freed the query in | |
34816ad9 | 596 | * another context. |
dae4c1d2 | 597 | */ |
34816ad9 | 598 | return ret ? ret : id; |
1da177e4 LT |
599 | } |
600 | ||
601 | static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query, | |
602 | int status, | |
603 | struct ib_sa_mad *mad) | |
604 | { | |
605 | struct ib_sa_path_query *query = | |
606 | container_of(sa_query, struct ib_sa_path_query, sa_query); | |
607 | ||
608 | if (mad) { | |
609 | struct ib_sa_path_rec rec; | |
610 | ||
611 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), | |
612 | mad->data, &rec); | |
613 | query->callback(status, &rec, query->context); | |
614 | } else | |
615 | query->callback(status, NULL, query->context); | |
616 | } | |
617 | ||
618 | static void ib_sa_path_rec_release(struct ib_sa_query *sa_query) | |
619 | { | |
1da177e4 LT |
620 | kfree(container_of(sa_query, struct ib_sa_path_query, sa_query)); |
621 | } | |
622 | ||
623 | /** | |
624 | * ib_sa_path_rec_get - Start a Path get query | |
c1a0b23b | 625 | * @client:SA client |
1da177e4 LT |
626 | * @device:device to send query on |
627 | * @port_num: port number to send query on | |
628 | * @rec:Path Record to send in query | |
629 | * @comp_mask:component mask to send in query | |
630 | * @timeout_ms:time to wait for response | |
631 | * @gfp_mask:GFP mask to use for internal allocations | |
632 | * @callback:function called when query completes, times out or is | |
633 | * canceled | |
634 | * @context:opaque user context passed to callback | |
635 | * @sa_query:query context, used to cancel query | |
636 | * | |
637 | * Send a Path Record Get query to the SA to look up a path. The | |
638 | * callback function will be called when the query completes (or | |
639 | * fails); status is 0 for a successful response, -EINTR if the query | |
640 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
641 | * occurred sending the query. The resp parameter of the callback is | |
642 | * only valid if status is 0. | |
643 | * | |
644 | * If the return value of ib_sa_path_rec_get() is negative, it is an | |
645 | * error code. Otherwise it is a query ID that can be used to cancel | |
646 | * the query. | |
647 | */ | |
c1a0b23b MT |
648 | int ib_sa_path_rec_get(struct ib_sa_client *client, |
649 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
650 | struct ib_sa_path_rec *rec, |
651 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 652 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
653 | void (*callback)(int status, |
654 | struct ib_sa_path_rec *resp, | |
655 | void *context), | |
656 | void *context, | |
657 | struct ib_sa_query **sa_query) | |
658 | { | |
659 | struct ib_sa_path_query *query; | |
660 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
661 | struct ib_sa_port *port; |
662 | struct ib_mad_agent *agent; | |
34816ad9 | 663 | struct ib_sa_mad *mad; |
1da177e4 LT |
664 | int ret; |
665 | ||
56c202d6 RD |
666 | if (!sa_dev) |
667 | return -ENODEV; | |
668 | ||
669 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
670 | agent = port->agent; | |
671 | ||
1da177e4 LT |
672 | query = kmalloc(sizeof *query, gfp_mask); |
673 | if (!query) | |
674 | return -ENOMEM; | |
34816ad9 | 675 | |
2aec5c60 SH |
676 | query->sa_query.port = port; |
677 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
678 | if (ret) | |
34816ad9 | 679 | goto err1; |
1da177e4 | 680 | |
c1a0b23b MT |
681 | ib_sa_client_get(client); |
682 | query->sa_query.client = client; | |
683 | query->callback = callback; | |
684 | query->context = context; | |
1da177e4 | 685 | |
34816ad9 SH |
686 | mad = query->sa_query.mad_buf->mad; |
687 | init_mad(mad, agent); | |
1da177e4 | 688 | |
34816ad9 SH |
689 | query->sa_query.callback = callback ? ib_sa_path_rec_callback : NULL; |
690 | query->sa_query.release = ib_sa_path_rec_release; | |
34816ad9 SH |
691 | mad->mad_hdr.method = IB_MGMT_METHOD_GET; |
692 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_PATH_REC); | |
693 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 | 694 | |
34816ad9 | 695 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, mad->data); |
1da177e4 LT |
696 | |
697 | *sa_query = &query->sa_query; | |
dae4c1d2 | 698 | |
e322fedf | 699 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
700 | if (ret < 0) |
701 | goto err2; | |
702 | ||
703 | return ret; | |
704 | ||
705 | err2: | |
706 | *sa_query = NULL; | |
c1a0b23b | 707 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 708 | free_mad(&query->sa_query); |
1da177e4 | 709 | |
34816ad9 SH |
710 | err1: |
711 | kfree(query); | |
dae4c1d2 | 712 | return ret; |
1da177e4 LT |
713 | } |
714 | EXPORT_SYMBOL(ib_sa_path_rec_get); | |
715 | ||
cbae32c5 HR |
716 | static void ib_sa_service_rec_callback(struct ib_sa_query *sa_query, |
717 | int status, | |
718 | struct ib_sa_mad *mad) | |
719 | { | |
720 | struct ib_sa_service_query *query = | |
721 | container_of(sa_query, struct ib_sa_service_query, sa_query); | |
722 | ||
723 | if (mad) { | |
724 | struct ib_sa_service_rec rec; | |
725 | ||
726 | ib_unpack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
727 | mad->data, &rec); | |
728 | query->callback(status, &rec, query->context); | |
729 | } else | |
730 | query->callback(status, NULL, query->context); | |
731 | } | |
732 | ||
733 | static void ib_sa_service_rec_release(struct ib_sa_query *sa_query) | |
734 | { | |
cbae32c5 HR |
735 | kfree(container_of(sa_query, struct ib_sa_service_query, sa_query)); |
736 | } | |
737 | ||
738 | /** | |
739 | * ib_sa_service_rec_query - Start Service Record operation | |
c1a0b23b | 740 | * @client:SA client |
cbae32c5 HR |
741 | * @device:device to send request on |
742 | * @port_num: port number to send request on | |
743 | * @method:SA method - should be get, set, or delete | |
744 | * @rec:Service Record to send in request | |
745 | * @comp_mask:component mask to send in request | |
746 | * @timeout_ms:time to wait for response | |
747 | * @gfp_mask:GFP mask to use for internal allocations | |
748 | * @callback:function called when request completes, times out or is | |
749 | * canceled | |
750 | * @context:opaque user context passed to callback | |
751 | * @sa_query:request context, used to cancel request | |
752 | * | |
753 | * Send a Service Record set/get/delete to the SA to register, | |
754 | * unregister or query a service record. | |
755 | * The callback function will be called when the request completes (or | |
756 | * fails); status is 0 for a successful response, -EINTR if the query | |
757 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
758 | * occurred sending the query. The resp parameter of the callback is | |
759 | * only valid if status is 0. | |
760 | * | |
761 | * If the return value of ib_sa_service_rec_query() is negative, it is an | |
762 | * error code. Otherwise it is a request ID that can be used to cancel | |
763 | * the query. | |
764 | */ | |
c1a0b23b MT |
765 | int ib_sa_service_rec_query(struct ib_sa_client *client, |
766 | struct ib_device *device, u8 port_num, u8 method, | |
cbae32c5 HR |
767 | struct ib_sa_service_rec *rec, |
768 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 769 | int timeout_ms, gfp_t gfp_mask, |
cbae32c5 HR |
770 | void (*callback)(int status, |
771 | struct ib_sa_service_rec *resp, | |
772 | void *context), | |
773 | void *context, | |
774 | struct ib_sa_query **sa_query) | |
775 | { | |
776 | struct ib_sa_service_query *query; | |
777 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
778 | struct ib_sa_port *port; |
779 | struct ib_mad_agent *agent; | |
34816ad9 | 780 | struct ib_sa_mad *mad; |
cbae32c5 HR |
781 | int ret; |
782 | ||
56c202d6 RD |
783 | if (!sa_dev) |
784 | return -ENODEV; | |
785 | ||
786 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
787 | agent = port->agent; | |
788 | ||
cbae32c5 HR |
789 | if (method != IB_MGMT_METHOD_GET && |
790 | method != IB_MGMT_METHOD_SET && | |
791 | method != IB_SA_METHOD_DELETE) | |
792 | return -EINVAL; | |
793 | ||
794 | query = kmalloc(sizeof *query, gfp_mask); | |
795 | if (!query) | |
796 | return -ENOMEM; | |
34816ad9 | 797 | |
2aec5c60 SH |
798 | query->sa_query.port = port; |
799 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
800 | if (ret) | |
34816ad9 | 801 | goto err1; |
cbae32c5 | 802 | |
c1a0b23b MT |
803 | ib_sa_client_get(client); |
804 | query->sa_query.client = client; | |
805 | query->callback = callback; | |
806 | query->context = context; | |
cbae32c5 | 807 | |
34816ad9 SH |
808 | mad = query->sa_query.mad_buf->mad; |
809 | init_mad(mad, agent); | |
cbae32c5 | 810 | |
34816ad9 SH |
811 | query->sa_query.callback = callback ? ib_sa_service_rec_callback : NULL; |
812 | query->sa_query.release = ib_sa_service_rec_release; | |
34816ad9 SH |
813 | mad->mad_hdr.method = method; |
814 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_SERVICE_REC); | |
815 | mad->sa_hdr.comp_mask = comp_mask; | |
cbae32c5 HR |
816 | |
817 | ib_pack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
34816ad9 | 818 | rec, mad->data); |
cbae32c5 HR |
819 | |
820 | *sa_query = &query->sa_query; | |
821 | ||
e322fedf | 822 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
823 | if (ret < 0) |
824 | goto err2; | |
825 | ||
826 | return ret; | |
cbae32c5 | 827 | |
34816ad9 SH |
828 | err2: |
829 | *sa_query = NULL; | |
c1a0b23b | 830 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 831 | free_mad(&query->sa_query); |
34816ad9 SH |
832 | |
833 | err1: | |
834 | kfree(query); | |
cbae32c5 HR |
835 | return ret; |
836 | } | |
837 | EXPORT_SYMBOL(ib_sa_service_rec_query); | |
838 | ||
1da177e4 LT |
839 | static void ib_sa_mcmember_rec_callback(struct ib_sa_query *sa_query, |
840 | int status, | |
841 | struct ib_sa_mad *mad) | |
842 | { | |
843 | struct ib_sa_mcmember_query *query = | |
844 | container_of(sa_query, struct ib_sa_mcmember_query, sa_query); | |
845 | ||
846 | if (mad) { | |
847 | struct ib_sa_mcmember_rec rec; | |
848 | ||
849 | ib_unpack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
850 | mad->data, &rec); | |
851 | query->callback(status, &rec, query->context); | |
852 | } else | |
853 | query->callback(status, NULL, query->context); | |
854 | } | |
855 | ||
856 | static void ib_sa_mcmember_rec_release(struct ib_sa_query *sa_query) | |
857 | { | |
1da177e4 LT |
858 | kfree(container_of(sa_query, struct ib_sa_mcmember_query, sa_query)); |
859 | } | |
860 | ||
c1a0b23b MT |
861 | int ib_sa_mcmember_rec_query(struct ib_sa_client *client, |
862 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
863 | u8 method, |
864 | struct ib_sa_mcmember_rec *rec, | |
865 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 866 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
867 | void (*callback)(int status, |
868 | struct ib_sa_mcmember_rec *resp, | |
869 | void *context), | |
870 | void *context, | |
871 | struct ib_sa_query **sa_query) | |
872 | { | |
873 | struct ib_sa_mcmember_query *query; | |
874 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
875 | struct ib_sa_port *port; |
876 | struct ib_mad_agent *agent; | |
34816ad9 | 877 | struct ib_sa_mad *mad; |
1da177e4 LT |
878 | int ret; |
879 | ||
56c202d6 RD |
880 | if (!sa_dev) |
881 | return -ENODEV; | |
882 | ||
883 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
884 | agent = port->agent; | |
885 | ||
1da177e4 LT |
886 | query = kmalloc(sizeof *query, gfp_mask); |
887 | if (!query) | |
888 | return -ENOMEM; | |
34816ad9 | 889 | |
2aec5c60 SH |
890 | query->sa_query.port = port; |
891 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
892 | if (ret) | |
34816ad9 | 893 | goto err1; |
1da177e4 | 894 | |
c1a0b23b MT |
895 | ib_sa_client_get(client); |
896 | query->sa_query.client = client; | |
897 | query->callback = callback; | |
898 | query->context = context; | |
1da177e4 | 899 | |
34816ad9 SH |
900 | mad = query->sa_query.mad_buf->mad; |
901 | init_mad(mad, agent); | |
1da177e4 | 902 | |
34816ad9 SH |
903 | query->sa_query.callback = callback ? ib_sa_mcmember_rec_callback : NULL; |
904 | query->sa_query.release = ib_sa_mcmember_rec_release; | |
34816ad9 SH |
905 | mad->mad_hdr.method = method; |
906 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC); | |
907 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 LT |
908 | |
909 | ib_pack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
34816ad9 | 910 | rec, mad->data); |
1da177e4 LT |
911 | |
912 | *sa_query = &query->sa_query; | |
dae4c1d2 | 913 | |
e322fedf | 914 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
915 | if (ret < 0) |
916 | goto err2; | |
1da177e4 | 917 | |
dae4c1d2 | 918 | return ret; |
34816ad9 SH |
919 | |
920 | err2: | |
921 | *sa_query = NULL; | |
c1a0b23b | 922 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 923 | free_mad(&query->sa_query); |
34816ad9 SH |
924 | |
925 | err1: | |
926 | kfree(query); | |
927 | return ret; | |
1da177e4 | 928 | } |
1da177e4 LT |
929 | |
930 | static void send_handler(struct ib_mad_agent *agent, | |
931 | struct ib_mad_send_wc *mad_send_wc) | |
932 | { | |
34816ad9 | 933 | struct ib_sa_query *query = mad_send_wc->send_buf->context[0]; |
1da177e4 LT |
934 | unsigned long flags; |
935 | ||
e4f50f00 RD |
936 | if (query->callback) |
937 | switch (mad_send_wc->status) { | |
938 | case IB_WC_SUCCESS: | |
939 | /* No callback -- already got recv */ | |
940 | break; | |
941 | case IB_WC_RESP_TIMEOUT_ERR: | |
942 | query->callback(query, -ETIMEDOUT, NULL); | |
943 | break; | |
944 | case IB_WC_WR_FLUSH_ERR: | |
945 | query->callback(query, -EINTR, NULL); | |
946 | break; | |
947 | default: | |
948 | query->callback(query, -EIO, NULL); | |
949 | break; | |
950 | } | |
1da177e4 | 951 | |
1da177e4 | 952 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 953 | idr_remove(&query_idr, query->id); |
1da177e4 | 954 | spin_unlock_irqrestore(&idr_lock, flags); |
34816ad9 | 955 | |
2aec5c60 | 956 | free_mad(query); |
c1a0b23b | 957 | ib_sa_client_put(query->client); |
34816ad9 | 958 | query->release(query); |
1da177e4 LT |
959 | } |
960 | ||
961 | static void recv_handler(struct ib_mad_agent *mad_agent, | |
962 | struct ib_mad_recv_wc *mad_recv_wc) | |
963 | { | |
964 | struct ib_sa_query *query; | |
34816ad9 | 965 | struct ib_mad_send_buf *mad_buf; |
1da177e4 | 966 | |
34816ad9 SH |
967 | mad_buf = (void *) (unsigned long) mad_recv_wc->wc->wr_id; |
968 | query = mad_buf->context[0]; | |
1da177e4 | 969 | |
34816ad9 | 970 | if (query->callback) { |
1da177e4 LT |
971 | if (mad_recv_wc->wc->status == IB_WC_SUCCESS) |
972 | query->callback(query, | |
973 | mad_recv_wc->recv_buf.mad->mad_hdr.status ? | |
974 | -EINVAL : 0, | |
975 | (struct ib_sa_mad *) mad_recv_wc->recv_buf.mad); | |
976 | else | |
977 | query->callback(query, -EIO, NULL); | |
978 | } | |
979 | ||
980 | ib_free_recv_mad(mad_recv_wc); | |
981 | } | |
982 | ||
983 | static void ib_sa_add_one(struct ib_device *device) | |
984 | { | |
985 | struct ib_sa_device *sa_dev; | |
986 | int s, e, i; | |
987 | ||
07ebafba TT |
988 | if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB) |
989 | return; | |
990 | ||
991 | if (device->node_type == RDMA_NODE_IB_SWITCH) | |
1da177e4 LT |
992 | s = e = 0; |
993 | else { | |
994 | s = 1; | |
995 | e = device->phys_port_cnt; | |
996 | } | |
997 | ||
998 | sa_dev = kmalloc(sizeof *sa_dev + | |
999 | (e - s + 1) * sizeof (struct ib_sa_port), | |
1000 | GFP_KERNEL); | |
1001 | if (!sa_dev) | |
1002 | return; | |
1003 | ||
1004 | sa_dev->start_port = s; | |
1005 | sa_dev->end_port = e; | |
1006 | ||
1007 | for (i = 0; i <= e - s; ++i) { | |
1da177e4 LT |
1008 | sa_dev->port[i].sm_ah = NULL; |
1009 | sa_dev->port[i].port_num = i + s; | |
1010 | spin_lock_init(&sa_dev->port[i].ah_lock); | |
1011 | ||
1012 | sa_dev->port[i].agent = | |
1013 | ib_register_mad_agent(device, i + s, IB_QPT_GSI, | |
1014 | NULL, 0, send_handler, | |
1015 | recv_handler, sa_dev); | |
1016 | if (IS_ERR(sa_dev->port[i].agent)) | |
1017 | goto err; | |
1018 | ||
c4028958 | 1019 | INIT_WORK(&sa_dev->port[i].update_task, update_sm_ah); |
1da177e4 LT |
1020 | } |
1021 | ||
1022 | ib_set_client_data(device, &sa_client, sa_dev); | |
1023 | ||
1024 | /* | |
1025 | * We register our event handler after everything is set up, | |
1026 | * and then update our cached info after the event handler is | |
1027 | * registered to avoid any problems if a port changes state | |
1028 | * during our initialization. | |
1029 | */ | |
1030 | ||
1031 | INIT_IB_EVENT_HANDLER(&sa_dev->event_handler, device, ib_sa_event); | |
1032 | if (ib_register_event_handler(&sa_dev->event_handler)) | |
1033 | goto err; | |
1034 | ||
1035 | for (i = 0; i <= e - s; ++i) | |
c4028958 | 1036 | update_sm_ah(&sa_dev->port[i].update_task); |
1da177e4 LT |
1037 | |
1038 | return; | |
1039 | ||
1040 | err: | |
b82cab6b | 1041 | while (--i >= 0) |
1da177e4 | 1042 | ib_unregister_mad_agent(sa_dev->port[i].agent); |
1da177e4 LT |
1043 | |
1044 | kfree(sa_dev); | |
1045 | ||
1046 | return; | |
1047 | } | |
1048 | ||
1049 | static void ib_sa_remove_one(struct ib_device *device) | |
1050 | { | |
1051 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
1052 | int i; | |
1053 | ||
1054 | if (!sa_dev) | |
1055 | return; | |
1056 | ||
1057 | ib_unregister_event_handler(&sa_dev->event_handler); | |
1058 | ||
0f47ae0b MT |
1059 | flush_scheduled_work(); |
1060 | ||
1da177e4 LT |
1061 | for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) { |
1062 | ib_unregister_mad_agent(sa_dev->port[i].agent); | |
1063 | kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah); | |
1064 | } | |
1065 | ||
1066 | kfree(sa_dev); | |
1067 | } | |
1068 | ||
1069 | static int __init ib_sa_init(void) | |
1070 | { | |
1071 | int ret; | |
1072 | ||
1073 | spin_lock_init(&idr_lock); | |
1074 | spin_lock_init(&tid_lock); | |
1075 | ||
1076 | get_random_bytes(&tid, sizeof tid); | |
1077 | ||
1078 | ret = ib_register_client(&sa_client); | |
faec2f7b | 1079 | if (ret) { |
1da177e4 | 1080 | printk(KERN_ERR "Couldn't register ib_sa client\n"); |
faec2f7b SH |
1081 | goto err1; |
1082 | } | |
1083 | ||
1084 | ret = mcast_init(); | |
1085 | if (ret) { | |
1086 | printk(KERN_ERR "Couldn't initialize multicast handling\n"); | |
1087 | goto err2; | |
1088 | } | |
1da177e4 | 1089 | |
faec2f7b SH |
1090 | return 0; |
1091 | err2: | |
1092 | ib_unregister_client(&sa_client); | |
1093 | err1: | |
1da177e4 LT |
1094 | return ret; |
1095 | } | |
1096 | ||
1097 | static void __exit ib_sa_cleanup(void) | |
1098 | { | |
faec2f7b | 1099 | mcast_cleanup(); |
1da177e4 | 1100 | ib_unregister_client(&sa_client); |
5d7edb3c | 1101 | idr_destroy(&query_idr); |
1da177e4 LT |
1102 | } |
1103 | ||
1104 | module_init(ib_sa_init); | |
1105 | module_exit(ib_sa_cleanup); |