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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[] = { | |
733d65fe | 126 | { PATH_REC_FIELD(service_id), |
1da177e4 LT |
127 | .offset_words = 0, |
128 | .offset_bits = 0, | |
733d65fe | 129 | .size_bits = 64 }, |
1da177e4 LT |
130 | { PATH_REC_FIELD(dgid), |
131 | .offset_words = 2, | |
132 | .offset_bits = 0, | |
133 | .size_bits = 128 }, | |
134 | { PATH_REC_FIELD(sgid), | |
135 | .offset_words = 6, | |
136 | .offset_bits = 0, | |
137 | .size_bits = 128 }, | |
138 | { PATH_REC_FIELD(dlid), | |
139 | .offset_words = 10, | |
140 | .offset_bits = 0, | |
141 | .size_bits = 16 }, | |
142 | { PATH_REC_FIELD(slid), | |
143 | .offset_words = 10, | |
144 | .offset_bits = 16, | |
145 | .size_bits = 16 }, | |
146 | { PATH_REC_FIELD(raw_traffic), | |
147 | .offset_words = 11, | |
148 | .offset_bits = 0, | |
149 | .size_bits = 1 }, | |
150 | { RESERVED, | |
151 | .offset_words = 11, | |
152 | .offset_bits = 1, | |
153 | .size_bits = 3 }, | |
154 | { PATH_REC_FIELD(flow_label), | |
155 | .offset_words = 11, | |
156 | .offset_bits = 4, | |
157 | .size_bits = 20 }, | |
158 | { PATH_REC_FIELD(hop_limit), | |
159 | .offset_words = 11, | |
160 | .offset_bits = 24, | |
161 | .size_bits = 8 }, | |
162 | { PATH_REC_FIELD(traffic_class), | |
163 | .offset_words = 12, | |
164 | .offset_bits = 0, | |
165 | .size_bits = 8 }, | |
166 | { PATH_REC_FIELD(reversible), | |
167 | .offset_words = 12, | |
168 | .offset_bits = 8, | |
169 | .size_bits = 1 }, | |
170 | { PATH_REC_FIELD(numb_path), | |
171 | .offset_words = 12, | |
172 | .offset_bits = 9, | |
173 | .size_bits = 7 }, | |
174 | { PATH_REC_FIELD(pkey), | |
175 | .offset_words = 12, | |
176 | .offset_bits = 16, | |
177 | .size_bits = 16 }, | |
733d65fe | 178 | { PATH_REC_FIELD(qos_class), |
1da177e4 LT |
179 | .offset_words = 13, |
180 | .offset_bits = 0, | |
181 | .size_bits = 12 }, | |
182 | { PATH_REC_FIELD(sl), | |
183 | .offset_words = 13, | |
184 | .offset_bits = 12, | |
185 | .size_bits = 4 }, | |
186 | { PATH_REC_FIELD(mtu_selector), | |
187 | .offset_words = 13, | |
188 | .offset_bits = 16, | |
189 | .size_bits = 2 }, | |
190 | { PATH_REC_FIELD(mtu), | |
191 | .offset_words = 13, | |
192 | .offset_bits = 18, | |
193 | .size_bits = 6 }, | |
194 | { PATH_REC_FIELD(rate_selector), | |
195 | .offset_words = 13, | |
196 | .offset_bits = 24, | |
197 | .size_bits = 2 }, | |
198 | { PATH_REC_FIELD(rate), | |
199 | .offset_words = 13, | |
200 | .offset_bits = 26, | |
201 | .size_bits = 6 }, | |
202 | { PATH_REC_FIELD(packet_life_time_selector), | |
203 | .offset_words = 14, | |
204 | .offset_bits = 0, | |
205 | .size_bits = 2 }, | |
206 | { PATH_REC_FIELD(packet_life_time), | |
207 | .offset_words = 14, | |
208 | .offset_bits = 2, | |
209 | .size_bits = 6 }, | |
210 | { PATH_REC_FIELD(preference), | |
211 | .offset_words = 14, | |
212 | .offset_bits = 8, | |
213 | .size_bits = 8 }, | |
214 | { RESERVED, | |
215 | .offset_words = 14, | |
216 | .offset_bits = 16, | |
217 | .size_bits = 48 }, | |
218 | }; | |
219 | ||
220 | #define MCMEMBER_REC_FIELD(field) \ | |
221 | .struct_offset_bytes = offsetof(struct ib_sa_mcmember_rec, field), \ | |
222 | .struct_size_bytes = sizeof ((struct ib_sa_mcmember_rec *) 0)->field, \ | |
223 | .field_name = "sa_mcmember_rec:" #field | |
224 | ||
225 | static const struct ib_field mcmember_rec_table[] = { | |
226 | { MCMEMBER_REC_FIELD(mgid), | |
227 | .offset_words = 0, | |
228 | .offset_bits = 0, | |
229 | .size_bits = 128 }, | |
230 | { MCMEMBER_REC_FIELD(port_gid), | |
231 | .offset_words = 4, | |
232 | .offset_bits = 0, | |
233 | .size_bits = 128 }, | |
234 | { MCMEMBER_REC_FIELD(qkey), | |
235 | .offset_words = 8, | |
236 | .offset_bits = 0, | |
237 | .size_bits = 32 }, | |
238 | { MCMEMBER_REC_FIELD(mlid), | |
239 | .offset_words = 9, | |
240 | .offset_bits = 0, | |
241 | .size_bits = 16 }, | |
242 | { MCMEMBER_REC_FIELD(mtu_selector), | |
243 | .offset_words = 9, | |
244 | .offset_bits = 16, | |
245 | .size_bits = 2 }, | |
246 | { MCMEMBER_REC_FIELD(mtu), | |
247 | .offset_words = 9, | |
248 | .offset_bits = 18, | |
249 | .size_bits = 6 }, | |
250 | { MCMEMBER_REC_FIELD(traffic_class), | |
251 | .offset_words = 9, | |
252 | .offset_bits = 24, | |
253 | .size_bits = 8 }, | |
254 | { MCMEMBER_REC_FIELD(pkey), | |
255 | .offset_words = 10, | |
256 | .offset_bits = 0, | |
257 | .size_bits = 16 }, | |
258 | { MCMEMBER_REC_FIELD(rate_selector), | |
259 | .offset_words = 10, | |
260 | .offset_bits = 16, | |
261 | .size_bits = 2 }, | |
262 | { MCMEMBER_REC_FIELD(rate), | |
263 | .offset_words = 10, | |
264 | .offset_bits = 18, | |
265 | .size_bits = 6 }, | |
266 | { MCMEMBER_REC_FIELD(packet_life_time_selector), | |
267 | .offset_words = 10, | |
268 | .offset_bits = 24, | |
269 | .size_bits = 2 }, | |
270 | { MCMEMBER_REC_FIELD(packet_life_time), | |
271 | .offset_words = 10, | |
272 | .offset_bits = 26, | |
273 | .size_bits = 6 }, | |
274 | { MCMEMBER_REC_FIELD(sl), | |
275 | .offset_words = 11, | |
276 | .offset_bits = 0, | |
277 | .size_bits = 4 }, | |
278 | { MCMEMBER_REC_FIELD(flow_label), | |
279 | .offset_words = 11, | |
280 | .offset_bits = 4, | |
281 | .size_bits = 20 }, | |
282 | { MCMEMBER_REC_FIELD(hop_limit), | |
283 | .offset_words = 11, | |
284 | .offset_bits = 24, | |
285 | .size_bits = 8 }, | |
286 | { MCMEMBER_REC_FIELD(scope), | |
287 | .offset_words = 12, | |
288 | .offset_bits = 0, | |
289 | .size_bits = 4 }, | |
290 | { MCMEMBER_REC_FIELD(join_state), | |
291 | .offset_words = 12, | |
292 | .offset_bits = 4, | |
293 | .size_bits = 4 }, | |
294 | { MCMEMBER_REC_FIELD(proxy_join), | |
295 | .offset_words = 12, | |
296 | .offset_bits = 8, | |
297 | .size_bits = 1 }, | |
298 | { RESERVED, | |
299 | .offset_words = 12, | |
300 | .offset_bits = 9, | |
301 | .size_bits = 23 }, | |
302 | }; | |
303 | ||
cbae32c5 HR |
304 | #define SERVICE_REC_FIELD(field) \ |
305 | .struct_offset_bytes = offsetof(struct ib_sa_service_rec, field), \ | |
306 | .struct_size_bytes = sizeof ((struct ib_sa_service_rec *) 0)->field, \ | |
307 | .field_name = "sa_service_rec:" #field | |
308 | ||
309 | static const struct ib_field service_rec_table[] = { | |
310 | { SERVICE_REC_FIELD(id), | |
311 | .offset_words = 0, | |
312 | .offset_bits = 0, | |
313 | .size_bits = 64 }, | |
314 | { SERVICE_REC_FIELD(gid), | |
315 | .offset_words = 2, | |
316 | .offset_bits = 0, | |
317 | .size_bits = 128 }, | |
318 | { SERVICE_REC_FIELD(pkey), | |
319 | .offset_words = 6, | |
320 | .offset_bits = 0, | |
321 | .size_bits = 16 }, | |
322 | { SERVICE_REC_FIELD(lease), | |
323 | .offset_words = 7, | |
324 | .offset_bits = 0, | |
325 | .size_bits = 32 }, | |
326 | { SERVICE_REC_FIELD(key), | |
327 | .offset_words = 8, | |
328 | .offset_bits = 0, | |
329 | .size_bits = 128 }, | |
330 | { SERVICE_REC_FIELD(name), | |
331 | .offset_words = 12, | |
332 | .offset_bits = 0, | |
333 | .size_bits = 64*8 }, | |
334 | { SERVICE_REC_FIELD(data8), | |
335 | .offset_words = 28, | |
336 | .offset_bits = 0, | |
337 | .size_bits = 16*8 }, | |
338 | { SERVICE_REC_FIELD(data16), | |
339 | .offset_words = 32, | |
340 | .offset_bits = 0, | |
341 | .size_bits = 8*16 }, | |
342 | { SERVICE_REC_FIELD(data32), | |
343 | .offset_words = 36, | |
344 | .offset_bits = 0, | |
345 | .size_bits = 4*32 }, | |
346 | { SERVICE_REC_FIELD(data64), | |
347 | .offset_words = 40, | |
348 | .offset_bits = 0, | |
349 | .size_bits = 2*64 }, | |
350 | }; | |
351 | ||
1da177e4 LT |
352 | static void free_sm_ah(struct kref *kref) |
353 | { | |
354 | struct ib_sa_sm_ah *sm_ah = container_of(kref, struct ib_sa_sm_ah, ref); | |
355 | ||
356 | ib_destroy_ah(sm_ah->ah); | |
357 | kfree(sm_ah); | |
358 | } | |
359 | ||
c4028958 | 360 | static void update_sm_ah(struct work_struct *work) |
1da177e4 | 361 | { |
c4028958 DH |
362 | struct ib_sa_port *port = |
363 | container_of(work, struct ib_sa_port, update_task); | |
1da177e4 LT |
364 | struct ib_sa_sm_ah *new_ah, *old_ah; |
365 | struct ib_port_attr port_attr; | |
366 | struct ib_ah_attr ah_attr; | |
367 | ||
368 | if (ib_query_port(port->agent->device, port->port_num, &port_attr)) { | |
369 | printk(KERN_WARNING "Couldn't query port\n"); | |
370 | return; | |
371 | } | |
372 | ||
373 | new_ah = kmalloc(sizeof *new_ah, GFP_KERNEL); | |
374 | if (!new_ah) { | |
375 | printk(KERN_WARNING "Couldn't allocate new SM AH\n"); | |
376 | return; | |
377 | } | |
378 | ||
379 | kref_init(&new_ah->ref); | |
d0e7bb14 | 380 | new_ah->src_path_mask = (1 << port_attr.lmc) - 1; |
1da177e4 | 381 | |
2aec5c60 SH |
382 | new_ah->pkey_index = 0; |
383 | if (ib_find_pkey(port->agent->device, port->port_num, | |
53998910 | 384 | IB_DEFAULT_PKEY_FULL, &new_ah->pkey_index)) |
2aec5c60 SH |
385 | printk(KERN_ERR "Couldn't find index for default PKey\n"); |
386 | ||
1da177e4 LT |
387 | memset(&ah_attr, 0, sizeof ah_attr); |
388 | ah_attr.dlid = port_attr.sm_lid; | |
389 | ah_attr.sl = port_attr.sm_sl; | |
390 | ah_attr.port_num = port->port_num; | |
391 | ||
392 | new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr); | |
393 | if (IS_ERR(new_ah->ah)) { | |
394 | printk(KERN_WARNING "Couldn't create new SM AH\n"); | |
395 | kfree(new_ah); | |
396 | return; | |
397 | } | |
398 | ||
399 | spin_lock_irq(&port->ah_lock); | |
400 | old_ah = port->sm_ah; | |
401 | port->sm_ah = new_ah; | |
402 | spin_unlock_irq(&port->ah_lock); | |
403 | ||
404 | if (old_ah) | |
405 | kref_put(&old_ah->ref, free_sm_ah); | |
406 | } | |
407 | ||
408 | static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event) | |
409 | { | |
410 | if (event->event == IB_EVENT_PORT_ERR || | |
411 | event->event == IB_EVENT_PORT_ACTIVE || | |
412 | event->event == IB_EVENT_LID_CHANGE || | |
413 | event->event == IB_EVENT_PKEY_CHANGE || | |
acaea9ee JM |
414 | event->event == IB_EVENT_SM_CHANGE || |
415 | event->event == IB_EVENT_CLIENT_REREGISTER) { | |
1d6801f9 MT |
416 | struct ib_sa_device *sa_dev; |
417 | sa_dev = container_of(handler, typeof(*sa_dev), event_handler); | |
1da177e4 LT |
418 | |
419 | schedule_work(&sa_dev->port[event->element.port_num - | |
420 | sa_dev->start_port].update_task); | |
421 | } | |
422 | } | |
423 | ||
c1a0b23b MT |
424 | void ib_sa_register_client(struct ib_sa_client *client) |
425 | { | |
426 | atomic_set(&client->users, 1); | |
427 | init_completion(&client->comp); | |
428 | } | |
429 | EXPORT_SYMBOL(ib_sa_register_client); | |
430 | ||
c1a0b23b MT |
431 | void ib_sa_unregister_client(struct ib_sa_client *client) |
432 | { | |
433 | ib_sa_client_put(client); | |
434 | wait_for_completion(&client->comp); | |
435 | } | |
436 | EXPORT_SYMBOL(ib_sa_unregister_client); | |
437 | ||
1da177e4 LT |
438 | /** |
439 | * ib_sa_cancel_query - try to cancel an SA query | |
440 | * @id:ID of query to cancel | |
441 | * @query:query pointer to cancel | |
442 | * | |
443 | * Try to cancel an SA query. If the id and query don't match up or | |
444 | * the query has already completed, nothing is done. Otherwise the | |
445 | * query is canceled and will complete with a status of -EINTR. | |
446 | */ | |
447 | void ib_sa_cancel_query(int id, struct ib_sa_query *query) | |
448 | { | |
449 | unsigned long flags; | |
450 | struct ib_mad_agent *agent; | |
34816ad9 | 451 | struct ib_mad_send_buf *mad_buf; |
1da177e4 LT |
452 | |
453 | spin_lock_irqsave(&idr_lock, flags); | |
454 | if (idr_find(&query_idr, id) != query) { | |
455 | spin_unlock_irqrestore(&idr_lock, flags); | |
456 | return; | |
457 | } | |
458 | agent = query->port->agent; | |
34816ad9 | 459 | mad_buf = query->mad_buf; |
1da177e4 LT |
460 | spin_unlock_irqrestore(&idr_lock, flags); |
461 | ||
34816ad9 | 462 | ib_cancel_mad(agent, mad_buf); |
1da177e4 LT |
463 | } |
464 | EXPORT_SYMBOL(ib_sa_cancel_query); | |
465 | ||
d0e7bb14 SH |
466 | static u8 get_src_path_mask(struct ib_device *device, u8 port_num) |
467 | { | |
468 | struct ib_sa_device *sa_dev; | |
469 | struct ib_sa_port *port; | |
470 | unsigned long flags; | |
471 | u8 src_path_mask; | |
472 | ||
473 | sa_dev = ib_get_client_data(device, &sa_client); | |
474 | if (!sa_dev) | |
475 | return 0x7f; | |
476 | ||
477 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
478 | spin_lock_irqsave(&port->ah_lock, flags); | |
479 | src_path_mask = port->sm_ah ? port->sm_ah->src_path_mask : 0x7f; | |
480 | spin_unlock_irqrestore(&port->ah_lock, flags); | |
481 | ||
482 | return src_path_mask; | |
483 | } | |
484 | ||
6d969a47 SH |
485 | int ib_init_ah_from_path(struct ib_device *device, u8 port_num, |
486 | struct ib_sa_path_rec *rec, struct ib_ah_attr *ah_attr) | |
487 | { | |
488 | int ret; | |
489 | u16 gid_index; | |
490 | ||
491 | memset(ah_attr, 0, sizeof *ah_attr); | |
492 | ah_attr->dlid = be16_to_cpu(rec->dlid); | |
493 | ah_attr->sl = rec->sl; | |
d0e7bb14 SH |
494 | ah_attr->src_path_bits = be16_to_cpu(rec->slid) & |
495 | get_src_path_mask(device, port_num); | |
6d969a47 | 496 | ah_attr->port_num = port_num; |
7084f842 | 497 | ah_attr->static_rate = rec->rate; |
6d969a47 SH |
498 | |
499 | if (rec->hop_limit > 1) { | |
500 | ah_attr->ah_flags = IB_AH_GRH; | |
501 | ah_attr->grh.dgid = rec->dgid; | |
502 | ||
503 | ret = ib_find_cached_gid(device, &rec->sgid, &port_num, | |
504 | &gid_index); | |
505 | if (ret) | |
506 | return ret; | |
507 | ||
ca222c6b SH |
508 | ah_attr->grh.sgid_index = gid_index; |
509 | ah_attr->grh.flow_label = be32_to_cpu(rec->flow_label); | |
510 | ah_attr->grh.hop_limit = rec->hop_limit; | |
6d969a47 SH |
511 | ah_attr->grh.traffic_class = rec->traffic_class; |
512 | } | |
513 | return 0; | |
514 | } | |
515 | EXPORT_SYMBOL(ib_init_ah_from_path); | |
516 | ||
2aec5c60 SH |
517 | static int alloc_mad(struct ib_sa_query *query, gfp_t gfp_mask) |
518 | { | |
519 | unsigned long flags; | |
520 | ||
521 | spin_lock_irqsave(&query->port->ah_lock, flags); | |
522 | kref_get(&query->port->sm_ah->ref); | |
523 | query->sm_ah = query->port->sm_ah; | |
524 | spin_unlock_irqrestore(&query->port->ah_lock, flags); | |
525 | ||
526 | query->mad_buf = ib_create_send_mad(query->port->agent, 1, | |
527 | query->sm_ah->pkey_index, | |
528 | 0, IB_MGMT_SA_HDR, IB_MGMT_SA_DATA, | |
529 | gfp_mask); | |
3c10c7c9 | 530 | if (IS_ERR(query->mad_buf)) { |
2aec5c60 SH |
531 | kref_put(&query->sm_ah->ref, free_sm_ah); |
532 | return -ENOMEM; | |
533 | } | |
534 | ||
535 | query->mad_buf->ah = query->sm_ah->ah; | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
540 | static void free_mad(struct ib_sa_query *query) | |
541 | { | |
542 | ib_free_send_mad(query->mad_buf); | |
543 | kref_put(&query->sm_ah->ref, free_sm_ah); | |
544 | } | |
545 | ||
1da177e4 LT |
546 | static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent) |
547 | { | |
548 | unsigned long flags; | |
549 | ||
550 | memset(mad, 0, sizeof *mad); | |
551 | ||
552 | mad->mad_hdr.base_version = IB_MGMT_BASE_VERSION; | |
553 | mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM; | |
554 | mad->mad_hdr.class_version = IB_SA_CLASS_VERSION; | |
555 | ||
556 | spin_lock_irqsave(&tid_lock, flags); | |
557 | mad->mad_hdr.tid = | |
558 | cpu_to_be64(((u64) agent->hi_tid) << 32 | tid++); | |
559 | spin_unlock_irqrestore(&tid_lock, flags); | |
560 | } | |
561 | ||
e322fedf | 562 | static int send_mad(struct ib_sa_query *query, int timeout_ms, gfp_t gfp_mask) |
1da177e4 | 563 | { |
1da177e4 | 564 | unsigned long flags; |
34816ad9 | 565 | int ret, id; |
1da177e4 LT |
566 | |
567 | retry: | |
e322fedf | 568 | if (!idr_pre_get(&query_idr, gfp_mask)) |
1da177e4 LT |
569 | return -ENOMEM; |
570 | spin_lock_irqsave(&idr_lock, flags); | |
34816ad9 | 571 | ret = idr_get_new(&query_idr, query, &id); |
1da177e4 LT |
572 | spin_unlock_irqrestore(&idr_lock, flags); |
573 | if (ret == -EAGAIN) | |
574 | goto retry; | |
575 | if (ret) | |
576 | return ret; | |
577 | ||
34816ad9 SH |
578 | query->mad_buf->timeout_ms = timeout_ms; |
579 | query->mad_buf->context[0] = query; | |
580 | query->id = id; | |
1da177e4 | 581 | |
34816ad9 | 582 | ret = ib_post_send_mad(query->mad_buf, NULL); |
1da177e4 | 583 | if (ret) { |
1da177e4 | 584 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 585 | idr_remove(&query_idr, id); |
1da177e4 LT |
586 | spin_unlock_irqrestore(&idr_lock, flags); |
587 | } | |
588 | ||
dae4c1d2 RD |
589 | /* |
590 | * It's not safe to dereference query any more, because the | |
591 | * send may already have completed and freed the query in | |
34816ad9 | 592 | * another context. |
dae4c1d2 | 593 | */ |
34816ad9 | 594 | return ret ? ret : id; |
1da177e4 LT |
595 | } |
596 | ||
597 | static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query, | |
598 | int status, | |
599 | struct ib_sa_mad *mad) | |
600 | { | |
601 | struct ib_sa_path_query *query = | |
602 | container_of(sa_query, struct ib_sa_path_query, sa_query); | |
603 | ||
604 | if (mad) { | |
605 | struct ib_sa_path_rec rec; | |
606 | ||
607 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), | |
608 | mad->data, &rec); | |
609 | query->callback(status, &rec, query->context); | |
610 | } else | |
611 | query->callback(status, NULL, query->context); | |
612 | } | |
613 | ||
614 | static void ib_sa_path_rec_release(struct ib_sa_query *sa_query) | |
615 | { | |
1da177e4 LT |
616 | kfree(container_of(sa_query, struct ib_sa_path_query, sa_query)); |
617 | } | |
618 | ||
619 | /** | |
620 | * ib_sa_path_rec_get - Start a Path get query | |
c1a0b23b | 621 | * @client:SA client |
1da177e4 LT |
622 | * @device:device to send query on |
623 | * @port_num: port number to send query on | |
624 | * @rec:Path Record to send in query | |
625 | * @comp_mask:component mask to send in query | |
626 | * @timeout_ms:time to wait for response | |
627 | * @gfp_mask:GFP mask to use for internal allocations | |
628 | * @callback:function called when query completes, times out or is | |
629 | * canceled | |
630 | * @context:opaque user context passed to callback | |
631 | * @sa_query:query context, used to cancel query | |
632 | * | |
633 | * Send a Path Record Get query to the SA to look up a path. The | |
634 | * callback function will be called when the query completes (or | |
635 | * fails); status is 0 for a successful response, -EINTR if the query | |
636 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
637 | * occurred sending the query. The resp parameter of the callback is | |
638 | * only valid if status is 0. | |
639 | * | |
640 | * If the return value of ib_sa_path_rec_get() is negative, it is an | |
641 | * error code. Otherwise it is a query ID that can be used to cancel | |
642 | * the query. | |
643 | */ | |
c1a0b23b MT |
644 | int ib_sa_path_rec_get(struct ib_sa_client *client, |
645 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
646 | struct ib_sa_path_rec *rec, |
647 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 648 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
649 | void (*callback)(int status, |
650 | struct ib_sa_path_rec *resp, | |
651 | void *context), | |
652 | void *context, | |
653 | struct ib_sa_query **sa_query) | |
654 | { | |
655 | struct ib_sa_path_query *query; | |
656 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
657 | struct ib_sa_port *port; |
658 | struct ib_mad_agent *agent; | |
34816ad9 | 659 | struct ib_sa_mad *mad; |
1da177e4 LT |
660 | int ret; |
661 | ||
56c202d6 RD |
662 | if (!sa_dev) |
663 | return -ENODEV; | |
664 | ||
665 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
666 | agent = port->agent; | |
667 | ||
1da177e4 LT |
668 | query = kmalloc(sizeof *query, gfp_mask); |
669 | if (!query) | |
670 | return -ENOMEM; | |
34816ad9 | 671 | |
2aec5c60 SH |
672 | query->sa_query.port = port; |
673 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
674 | if (ret) | |
34816ad9 | 675 | goto err1; |
1da177e4 | 676 | |
c1a0b23b MT |
677 | ib_sa_client_get(client); |
678 | query->sa_query.client = client; | |
679 | query->callback = callback; | |
680 | query->context = context; | |
1da177e4 | 681 | |
34816ad9 SH |
682 | mad = query->sa_query.mad_buf->mad; |
683 | init_mad(mad, agent); | |
1da177e4 | 684 | |
34816ad9 SH |
685 | query->sa_query.callback = callback ? ib_sa_path_rec_callback : NULL; |
686 | query->sa_query.release = ib_sa_path_rec_release; | |
34816ad9 SH |
687 | mad->mad_hdr.method = IB_MGMT_METHOD_GET; |
688 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_PATH_REC); | |
689 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 | 690 | |
34816ad9 | 691 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, mad->data); |
1da177e4 LT |
692 | |
693 | *sa_query = &query->sa_query; | |
dae4c1d2 | 694 | |
e322fedf | 695 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
696 | if (ret < 0) |
697 | goto err2; | |
698 | ||
699 | return ret; | |
700 | ||
701 | err2: | |
702 | *sa_query = NULL; | |
c1a0b23b | 703 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 704 | free_mad(&query->sa_query); |
1da177e4 | 705 | |
34816ad9 SH |
706 | err1: |
707 | kfree(query); | |
dae4c1d2 | 708 | return ret; |
1da177e4 LT |
709 | } |
710 | EXPORT_SYMBOL(ib_sa_path_rec_get); | |
711 | ||
cbae32c5 HR |
712 | static void ib_sa_service_rec_callback(struct ib_sa_query *sa_query, |
713 | int status, | |
714 | struct ib_sa_mad *mad) | |
715 | { | |
716 | struct ib_sa_service_query *query = | |
717 | container_of(sa_query, struct ib_sa_service_query, sa_query); | |
718 | ||
719 | if (mad) { | |
720 | struct ib_sa_service_rec rec; | |
721 | ||
722 | ib_unpack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
723 | mad->data, &rec); | |
724 | query->callback(status, &rec, query->context); | |
725 | } else | |
726 | query->callback(status, NULL, query->context); | |
727 | } | |
728 | ||
729 | static void ib_sa_service_rec_release(struct ib_sa_query *sa_query) | |
730 | { | |
cbae32c5 HR |
731 | kfree(container_of(sa_query, struct ib_sa_service_query, sa_query)); |
732 | } | |
733 | ||
734 | /** | |
735 | * ib_sa_service_rec_query - Start Service Record operation | |
c1a0b23b | 736 | * @client:SA client |
cbae32c5 HR |
737 | * @device:device to send request on |
738 | * @port_num: port number to send request on | |
739 | * @method:SA method - should be get, set, or delete | |
740 | * @rec:Service Record to send in request | |
741 | * @comp_mask:component mask to send in request | |
742 | * @timeout_ms:time to wait for response | |
743 | * @gfp_mask:GFP mask to use for internal allocations | |
744 | * @callback:function called when request completes, times out or is | |
745 | * canceled | |
746 | * @context:opaque user context passed to callback | |
747 | * @sa_query:request context, used to cancel request | |
748 | * | |
749 | * Send a Service Record set/get/delete to the SA to register, | |
750 | * unregister or query a service record. | |
751 | * The callback function will be called when the request completes (or | |
752 | * fails); status is 0 for a successful response, -EINTR if the query | |
753 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
754 | * occurred sending the query. The resp parameter of the callback is | |
755 | * only valid if status is 0. | |
756 | * | |
757 | * If the return value of ib_sa_service_rec_query() is negative, it is an | |
758 | * error code. Otherwise it is a request ID that can be used to cancel | |
759 | * the query. | |
760 | */ | |
c1a0b23b MT |
761 | int ib_sa_service_rec_query(struct ib_sa_client *client, |
762 | struct ib_device *device, u8 port_num, u8 method, | |
cbae32c5 HR |
763 | struct ib_sa_service_rec *rec, |
764 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 765 | int timeout_ms, gfp_t gfp_mask, |
cbae32c5 HR |
766 | void (*callback)(int status, |
767 | struct ib_sa_service_rec *resp, | |
768 | void *context), | |
769 | void *context, | |
770 | struct ib_sa_query **sa_query) | |
771 | { | |
772 | struct ib_sa_service_query *query; | |
773 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
774 | struct ib_sa_port *port; |
775 | struct ib_mad_agent *agent; | |
34816ad9 | 776 | struct ib_sa_mad *mad; |
cbae32c5 HR |
777 | int ret; |
778 | ||
56c202d6 RD |
779 | if (!sa_dev) |
780 | return -ENODEV; | |
781 | ||
782 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
783 | agent = port->agent; | |
784 | ||
cbae32c5 HR |
785 | if (method != IB_MGMT_METHOD_GET && |
786 | method != IB_MGMT_METHOD_SET && | |
787 | method != IB_SA_METHOD_DELETE) | |
788 | return -EINVAL; | |
789 | ||
790 | query = kmalloc(sizeof *query, gfp_mask); | |
791 | if (!query) | |
792 | return -ENOMEM; | |
34816ad9 | 793 | |
2aec5c60 SH |
794 | query->sa_query.port = port; |
795 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
796 | if (ret) | |
34816ad9 | 797 | goto err1; |
cbae32c5 | 798 | |
c1a0b23b MT |
799 | ib_sa_client_get(client); |
800 | query->sa_query.client = client; | |
801 | query->callback = callback; | |
802 | query->context = context; | |
cbae32c5 | 803 | |
34816ad9 SH |
804 | mad = query->sa_query.mad_buf->mad; |
805 | init_mad(mad, agent); | |
cbae32c5 | 806 | |
34816ad9 SH |
807 | query->sa_query.callback = callback ? ib_sa_service_rec_callback : NULL; |
808 | query->sa_query.release = ib_sa_service_rec_release; | |
34816ad9 SH |
809 | mad->mad_hdr.method = method; |
810 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_SERVICE_REC); | |
811 | mad->sa_hdr.comp_mask = comp_mask; | |
cbae32c5 HR |
812 | |
813 | ib_pack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
34816ad9 | 814 | rec, mad->data); |
cbae32c5 HR |
815 | |
816 | *sa_query = &query->sa_query; | |
817 | ||
e322fedf | 818 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
819 | if (ret < 0) |
820 | goto err2; | |
821 | ||
822 | return ret; | |
cbae32c5 | 823 | |
34816ad9 SH |
824 | err2: |
825 | *sa_query = NULL; | |
c1a0b23b | 826 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 827 | free_mad(&query->sa_query); |
34816ad9 SH |
828 | |
829 | err1: | |
830 | kfree(query); | |
cbae32c5 HR |
831 | return ret; |
832 | } | |
833 | EXPORT_SYMBOL(ib_sa_service_rec_query); | |
834 | ||
1da177e4 LT |
835 | static void ib_sa_mcmember_rec_callback(struct ib_sa_query *sa_query, |
836 | int status, | |
837 | struct ib_sa_mad *mad) | |
838 | { | |
839 | struct ib_sa_mcmember_query *query = | |
840 | container_of(sa_query, struct ib_sa_mcmember_query, sa_query); | |
841 | ||
842 | if (mad) { | |
843 | struct ib_sa_mcmember_rec rec; | |
844 | ||
845 | ib_unpack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
846 | mad->data, &rec); | |
847 | query->callback(status, &rec, query->context); | |
848 | } else | |
849 | query->callback(status, NULL, query->context); | |
850 | } | |
851 | ||
852 | static void ib_sa_mcmember_rec_release(struct ib_sa_query *sa_query) | |
853 | { | |
1da177e4 LT |
854 | kfree(container_of(sa_query, struct ib_sa_mcmember_query, sa_query)); |
855 | } | |
856 | ||
c1a0b23b MT |
857 | int ib_sa_mcmember_rec_query(struct ib_sa_client *client, |
858 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
859 | u8 method, |
860 | struct ib_sa_mcmember_rec *rec, | |
861 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 862 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
863 | void (*callback)(int status, |
864 | struct ib_sa_mcmember_rec *resp, | |
865 | void *context), | |
866 | void *context, | |
867 | struct ib_sa_query **sa_query) | |
868 | { | |
869 | struct ib_sa_mcmember_query *query; | |
870 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
871 | struct ib_sa_port *port; |
872 | struct ib_mad_agent *agent; | |
34816ad9 | 873 | struct ib_sa_mad *mad; |
1da177e4 LT |
874 | int ret; |
875 | ||
56c202d6 RD |
876 | if (!sa_dev) |
877 | return -ENODEV; | |
878 | ||
879 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
880 | agent = port->agent; | |
881 | ||
1da177e4 LT |
882 | query = kmalloc(sizeof *query, gfp_mask); |
883 | if (!query) | |
884 | return -ENOMEM; | |
34816ad9 | 885 | |
2aec5c60 SH |
886 | query->sa_query.port = port; |
887 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
888 | if (ret) | |
34816ad9 | 889 | goto err1; |
1da177e4 | 890 | |
c1a0b23b MT |
891 | ib_sa_client_get(client); |
892 | query->sa_query.client = client; | |
893 | query->callback = callback; | |
894 | query->context = context; | |
1da177e4 | 895 | |
34816ad9 SH |
896 | mad = query->sa_query.mad_buf->mad; |
897 | init_mad(mad, agent); | |
1da177e4 | 898 | |
34816ad9 SH |
899 | query->sa_query.callback = callback ? ib_sa_mcmember_rec_callback : NULL; |
900 | query->sa_query.release = ib_sa_mcmember_rec_release; | |
34816ad9 SH |
901 | mad->mad_hdr.method = method; |
902 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC); | |
903 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 LT |
904 | |
905 | ib_pack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
34816ad9 | 906 | rec, mad->data); |
1da177e4 LT |
907 | |
908 | *sa_query = &query->sa_query; | |
dae4c1d2 | 909 | |
e322fedf | 910 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
911 | if (ret < 0) |
912 | goto err2; | |
1da177e4 | 913 | |
dae4c1d2 | 914 | return ret; |
34816ad9 SH |
915 | |
916 | err2: | |
917 | *sa_query = NULL; | |
c1a0b23b | 918 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 919 | free_mad(&query->sa_query); |
34816ad9 SH |
920 | |
921 | err1: | |
922 | kfree(query); | |
923 | return ret; | |
1da177e4 | 924 | } |
1da177e4 LT |
925 | |
926 | static void send_handler(struct ib_mad_agent *agent, | |
927 | struct ib_mad_send_wc *mad_send_wc) | |
928 | { | |
34816ad9 | 929 | struct ib_sa_query *query = mad_send_wc->send_buf->context[0]; |
1da177e4 LT |
930 | unsigned long flags; |
931 | ||
e4f50f00 RD |
932 | if (query->callback) |
933 | switch (mad_send_wc->status) { | |
934 | case IB_WC_SUCCESS: | |
935 | /* No callback -- already got recv */ | |
936 | break; | |
937 | case IB_WC_RESP_TIMEOUT_ERR: | |
938 | query->callback(query, -ETIMEDOUT, NULL); | |
939 | break; | |
940 | case IB_WC_WR_FLUSH_ERR: | |
941 | query->callback(query, -EINTR, NULL); | |
942 | break; | |
943 | default: | |
944 | query->callback(query, -EIO, NULL); | |
945 | break; | |
946 | } | |
1da177e4 | 947 | |
1da177e4 | 948 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 949 | idr_remove(&query_idr, query->id); |
1da177e4 | 950 | spin_unlock_irqrestore(&idr_lock, flags); |
34816ad9 | 951 | |
2aec5c60 | 952 | free_mad(query); |
c1a0b23b | 953 | ib_sa_client_put(query->client); |
34816ad9 | 954 | query->release(query); |
1da177e4 LT |
955 | } |
956 | ||
957 | static void recv_handler(struct ib_mad_agent *mad_agent, | |
958 | struct ib_mad_recv_wc *mad_recv_wc) | |
959 | { | |
960 | struct ib_sa_query *query; | |
34816ad9 | 961 | struct ib_mad_send_buf *mad_buf; |
1da177e4 | 962 | |
34816ad9 SH |
963 | mad_buf = (void *) (unsigned long) mad_recv_wc->wc->wr_id; |
964 | query = mad_buf->context[0]; | |
1da177e4 | 965 | |
34816ad9 | 966 | if (query->callback) { |
1da177e4 LT |
967 | if (mad_recv_wc->wc->status == IB_WC_SUCCESS) |
968 | query->callback(query, | |
969 | mad_recv_wc->recv_buf.mad->mad_hdr.status ? | |
970 | -EINVAL : 0, | |
971 | (struct ib_sa_mad *) mad_recv_wc->recv_buf.mad); | |
972 | else | |
973 | query->callback(query, -EIO, NULL); | |
974 | } | |
975 | ||
976 | ib_free_recv_mad(mad_recv_wc); | |
977 | } | |
978 | ||
979 | static void ib_sa_add_one(struct ib_device *device) | |
980 | { | |
981 | struct ib_sa_device *sa_dev; | |
982 | int s, e, i; | |
983 | ||
07ebafba TT |
984 | if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB) |
985 | return; | |
986 | ||
987 | if (device->node_type == RDMA_NODE_IB_SWITCH) | |
1da177e4 LT |
988 | s = e = 0; |
989 | else { | |
990 | s = 1; | |
991 | e = device->phys_port_cnt; | |
992 | } | |
993 | ||
994 | sa_dev = kmalloc(sizeof *sa_dev + | |
995 | (e - s + 1) * sizeof (struct ib_sa_port), | |
996 | GFP_KERNEL); | |
997 | if (!sa_dev) | |
998 | return; | |
999 | ||
1000 | sa_dev->start_port = s; | |
1001 | sa_dev->end_port = e; | |
1002 | ||
1003 | for (i = 0; i <= e - s; ++i) { | |
1da177e4 LT |
1004 | sa_dev->port[i].sm_ah = NULL; |
1005 | sa_dev->port[i].port_num = i + s; | |
1006 | spin_lock_init(&sa_dev->port[i].ah_lock); | |
1007 | ||
1008 | sa_dev->port[i].agent = | |
1009 | ib_register_mad_agent(device, i + s, IB_QPT_GSI, | |
1010 | NULL, 0, send_handler, | |
1011 | recv_handler, sa_dev); | |
1012 | if (IS_ERR(sa_dev->port[i].agent)) | |
1013 | goto err; | |
1014 | ||
c4028958 | 1015 | INIT_WORK(&sa_dev->port[i].update_task, update_sm_ah); |
1da177e4 LT |
1016 | } |
1017 | ||
1018 | ib_set_client_data(device, &sa_client, sa_dev); | |
1019 | ||
1020 | /* | |
1021 | * We register our event handler after everything is set up, | |
1022 | * and then update our cached info after the event handler is | |
1023 | * registered to avoid any problems if a port changes state | |
1024 | * during our initialization. | |
1025 | */ | |
1026 | ||
1027 | INIT_IB_EVENT_HANDLER(&sa_dev->event_handler, device, ib_sa_event); | |
1028 | if (ib_register_event_handler(&sa_dev->event_handler)) | |
1029 | goto err; | |
1030 | ||
1031 | for (i = 0; i <= e - s; ++i) | |
c4028958 | 1032 | update_sm_ah(&sa_dev->port[i].update_task); |
1da177e4 LT |
1033 | |
1034 | return; | |
1035 | ||
1036 | err: | |
b82cab6b | 1037 | while (--i >= 0) |
1da177e4 | 1038 | ib_unregister_mad_agent(sa_dev->port[i].agent); |
1da177e4 LT |
1039 | |
1040 | kfree(sa_dev); | |
1041 | ||
1042 | return; | |
1043 | } | |
1044 | ||
1045 | static void ib_sa_remove_one(struct ib_device *device) | |
1046 | { | |
1047 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
1048 | int i; | |
1049 | ||
1050 | if (!sa_dev) | |
1051 | return; | |
1052 | ||
1053 | ib_unregister_event_handler(&sa_dev->event_handler); | |
1054 | ||
0f47ae0b MT |
1055 | flush_scheduled_work(); |
1056 | ||
1da177e4 LT |
1057 | for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) { |
1058 | ib_unregister_mad_agent(sa_dev->port[i].agent); | |
1059 | kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah); | |
1060 | } | |
1061 | ||
1062 | kfree(sa_dev); | |
1063 | } | |
1064 | ||
1065 | static int __init ib_sa_init(void) | |
1066 | { | |
1067 | int ret; | |
1068 | ||
1069 | spin_lock_init(&idr_lock); | |
1070 | spin_lock_init(&tid_lock); | |
1071 | ||
1072 | get_random_bytes(&tid, sizeof tid); | |
1073 | ||
1074 | ret = ib_register_client(&sa_client); | |
faec2f7b | 1075 | if (ret) { |
1da177e4 | 1076 | printk(KERN_ERR "Couldn't register ib_sa client\n"); |
faec2f7b SH |
1077 | goto err1; |
1078 | } | |
1079 | ||
1080 | ret = mcast_init(); | |
1081 | if (ret) { | |
1082 | printk(KERN_ERR "Couldn't initialize multicast handling\n"); | |
1083 | goto err2; | |
1084 | } | |
1da177e4 | 1085 | |
faec2f7b SH |
1086 | return 0; |
1087 | err2: | |
1088 | ib_unregister_client(&sa_client); | |
1089 | err1: | |
1da177e4 LT |
1090 | return ret; |
1091 | } | |
1092 | ||
1093 | static void __exit ib_sa_cleanup(void) | |
1094 | { | |
faec2f7b | 1095 | mcast_cleanup(); |
1da177e4 | 1096 | ib_unregister_client(&sa_client); |
5d7edb3c | 1097 | idr_destroy(&query_idr); |
1da177e4 LT |
1098 | } |
1099 | ||
1100 | module_init(ib_sa_init); | |
1101 | module_exit(ib_sa_cleanup); |