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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. | |
1da177e4 LT |
33 | */ |
34 | ||
35 | #include <linux/module.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/err.h> | |
38 | #include <linux/random.h> | |
39 | #include <linux/spinlock.h> | |
40 | #include <linux/slab.h> | |
1da177e4 LT |
41 | #include <linux/dma-mapping.h> |
42 | #include <linux/kref.h> | |
43 | #include <linux/idr.h> | |
4e57b681 | 44 | #include <linux/workqueue.h> |
dd5f03be | 45 | #include <uapi/linux/if_ether.h> |
a4d61e84 | 46 | #include <rdma/ib_pack.h> |
6d969a47 | 47 | #include <rdma/ib_cache.h> |
faec2f7b | 48 | #include "sa.h" |
1da177e4 LT |
49 | |
50 | MODULE_AUTHOR("Roland Dreier"); | |
51 | MODULE_DESCRIPTION("InfiniBand subnet administration query support"); | |
52 | MODULE_LICENSE("Dual BSD/GPL"); | |
53 | ||
1da177e4 LT |
54 | struct ib_sa_sm_ah { |
55 | struct ib_ah *ah; | |
56 | struct kref ref; | |
2aec5c60 | 57 | u16 pkey_index; |
d0e7bb14 | 58 | u8 src_path_mask; |
1da177e4 LT |
59 | }; |
60 | ||
61 | struct ib_sa_port { | |
62 | struct ib_mad_agent *agent; | |
1da177e4 LT |
63 | struct ib_sa_sm_ah *sm_ah; |
64 | struct work_struct update_task; | |
65 | spinlock_t ah_lock; | |
66 | u8 port_num; | |
67 | }; | |
68 | ||
69 | struct ib_sa_device { | |
70 | int start_port, end_port; | |
71 | struct ib_event_handler event_handler; | |
72 | struct ib_sa_port port[0]; | |
73 | }; | |
74 | ||
75 | struct ib_sa_query { | |
76 | void (*callback)(struct ib_sa_query *, int, struct ib_sa_mad *); | |
77 | void (*release)(struct ib_sa_query *); | |
c1a0b23b | 78 | struct ib_sa_client *client; |
34816ad9 SH |
79 | struct ib_sa_port *port; |
80 | struct ib_mad_send_buf *mad_buf; | |
81 | struct ib_sa_sm_ah *sm_ah; | |
82 | int id; | |
1da177e4 LT |
83 | }; |
84 | ||
cbae32c5 HR |
85 | struct ib_sa_service_query { |
86 | void (*callback)(int, struct ib_sa_service_rec *, void *); | |
87 | void *context; | |
88 | struct ib_sa_query sa_query; | |
89 | }; | |
90 | ||
1da177e4 LT |
91 | struct ib_sa_path_query { |
92 | void (*callback)(int, struct ib_sa_path_rec *, void *); | |
93 | void *context; | |
94 | struct ib_sa_query sa_query; | |
95 | }; | |
96 | ||
aeab97ed ES |
97 | struct ib_sa_guidinfo_query { |
98 | void (*callback)(int, struct ib_sa_guidinfo_rec *, void *); | |
99 | void *context; | |
100 | struct ib_sa_query sa_query; | |
101 | }; | |
102 | ||
1da177e4 LT |
103 | struct ib_sa_mcmember_query { |
104 | void (*callback)(int, struct ib_sa_mcmember_rec *, void *); | |
105 | void *context; | |
106 | struct ib_sa_query sa_query; | |
107 | }; | |
108 | ||
109 | static void ib_sa_add_one(struct ib_device *device); | |
110 | static void ib_sa_remove_one(struct ib_device *device); | |
111 | ||
112 | static struct ib_client sa_client = { | |
113 | .name = "sa", | |
114 | .add = ib_sa_add_one, | |
115 | .remove = ib_sa_remove_one | |
116 | }; | |
117 | ||
6276e08a | 118 | static DEFINE_SPINLOCK(idr_lock); |
1da177e4 LT |
119 | static DEFINE_IDR(query_idr); |
120 | ||
6276e08a | 121 | static DEFINE_SPINLOCK(tid_lock); |
1da177e4 LT |
122 | static u32 tid; |
123 | ||
1da177e4 LT |
124 | #define PATH_REC_FIELD(field) \ |
125 | .struct_offset_bytes = offsetof(struct ib_sa_path_rec, field), \ | |
126 | .struct_size_bytes = sizeof ((struct ib_sa_path_rec *) 0)->field, \ | |
127 | .field_name = "sa_path_rec:" #field | |
128 | ||
129 | static const struct ib_field path_rec_table[] = { | |
733d65fe | 130 | { PATH_REC_FIELD(service_id), |
1da177e4 LT |
131 | .offset_words = 0, |
132 | .offset_bits = 0, | |
733d65fe | 133 | .size_bits = 64 }, |
1da177e4 LT |
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 }, | |
733d65fe | 182 | { PATH_REC_FIELD(qos_class), |
1da177e4 LT |
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 | ||
aeab97ed ES |
356 | #define GUIDINFO_REC_FIELD(field) \ |
357 | .struct_offset_bytes = offsetof(struct ib_sa_guidinfo_rec, field), \ | |
358 | .struct_size_bytes = sizeof((struct ib_sa_guidinfo_rec *) 0)->field, \ | |
359 | .field_name = "sa_guidinfo_rec:" #field | |
360 | ||
361 | static const struct ib_field guidinfo_rec_table[] = { | |
362 | { GUIDINFO_REC_FIELD(lid), | |
363 | .offset_words = 0, | |
364 | .offset_bits = 0, | |
365 | .size_bits = 16 }, | |
366 | { GUIDINFO_REC_FIELD(block_num), | |
367 | .offset_words = 0, | |
368 | .offset_bits = 16, | |
369 | .size_bits = 8 }, | |
370 | { GUIDINFO_REC_FIELD(res1), | |
371 | .offset_words = 0, | |
372 | .offset_bits = 24, | |
373 | .size_bits = 8 }, | |
374 | { GUIDINFO_REC_FIELD(res2), | |
375 | .offset_words = 1, | |
376 | .offset_bits = 0, | |
377 | .size_bits = 32 }, | |
378 | { GUIDINFO_REC_FIELD(guid_info_list), | |
379 | .offset_words = 2, | |
380 | .offset_bits = 0, | |
381 | .size_bits = 512 }, | |
382 | }; | |
383 | ||
1da177e4 LT |
384 | static void free_sm_ah(struct kref *kref) |
385 | { | |
386 | struct ib_sa_sm_ah *sm_ah = container_of(kref, struct ib_sa_sm_ah, ref); | |
387 | ||
388 | ib_destroy_ah(sm_ah->ah); | |
389 | kfree(sm_ah); | |
390 | } | |
391 | ||
c4028958 | 392 | static void update_sm_ah(struct work_struct *work) |
1da177e4 | 393 | { |
c4028958 DH |
394 | struct ib_sa_port *port = |
395 | container_of(work, struct ib_sa_port, update_task); | |
164ba089 | 396 | struct ib_sa_sm_ah *new_ah; |
1da177e4 LT |
397 | struct ib_port_attr port_attr; |
398 | struct ib_ah_attr ah_attr; | |
399 | ||
400 | if (ib_query_port(port->agent->device, port->port_num, &port_attr)) { | |
401 | printk(KERN_WARNING "Couldn't query port\n"); | |
402 | return; | |
403 | } | |
404 | ||
405 | new_ah = kmalloc(sizeof *new_ah, GFP_KERNEL); | |
406 | if (!new_ah) { | |
407 | printk(KERN_WARNING "Couldn't allocate new SM AH\n"); | |
408 | return; | |
409 | } | |
410 | ||
411 | kref_init(&new_ah->ref); | |
d0e7bb14 | 412 | new_ah->src_path_mask = (1 << port_attr.lmc) - 1; |
1da177e4 | 413 | |
2aec5c60 SH |
414 | new_ah->pkey_index = 0; |
415 | if (ib_find_pkey(port->agent->device, port->port_num, | |
53998910 | 416 | IB_DEFAULT_PKEY_FULL, &new_ah->pkey_index)) |
2aec5c60 SH |
417 | printk(KERN_ERR "Couldn't find index for default PKey\n"); |
418 | ||
1da177e4 LT |
419 | memset(&ah_attr, 0, sizeof ah_attr); |
420 | ah_attr.dlid = port_attr.sm_lid; | |
421 | ah_attr.sl = port_attr.sm_sl; | |
422 | ah_attr.port_num = port->port_num; | |
423 | ||
424 | new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr); | |
425 | if (IS_ERR(new_ah->ah)) { | |
426 | printk(KERN_WARNING "Couldn't create new SM AH\n"); | |
427 | kfree(new_ah); | |
428 | return; | |
429 | } | |
430 | ||
431 | spin_lock_irq(&port->ah_lock); | |
6b708b3d JM |
432 | if (port->sm_ah) |
433 | kref_put(&port->sm_ah->ref, free_sm_ah); | |
1da177e4 LT |
434 | port->sm_ah = new_ah; |
435 | spin_unlock_irq(&port->ah_lock); | |
436 | ||
1da177e4 LT |
437 | } |
438 | ||
439 | static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event) | |
440 | { | |
441 | if (event->event == IB_EVENT_PORT_ERR || | |
442 | event->event == IB_EVENT_PORT_ACTIVE || | |
443 | event->event == IB_EVENT_LID_CHANGE || | |
444 | event->event == IB_EVENT_PKEY_CHANGE || | |
acaea9ee JM |
445 | event->event == IB_EVENT_SM_CHANGE || |
446 | event->event == IB_EVENT_CLIENT_REREGISTER) { | |
164ba089 MS |
447 | unsigned long flags; |
448 | struct ib_sa_device *sa_dev = | |
449 | container_of(handler, typeof(*sa_dev), event_handler); | |
450 | struct ib_sa_port *port = | |
451 | &sa_dev->port[event->element.port_num - sa_dev->start_port]; | |
452 | ||
fac70d51 EC |
453 | if (rdma_port_get_link_layer(handler->device, port->port_num) != IB_LINK_LAYER_INFINIBAND) |
454 | return; | |
455 | ||
164ba089 MS |
456 | spin_lock_irqsave(&port->ah_lock, flags); |
457 | if (port->sm_ah) | |
458 | kref_put(&port->sm_ah->ref, free_sm_ah); | |
459 | port->sm_ah = NULL; | |
460 | spin_unlock_irqrestore(&port->ah_lock, flags); | |
1da177e4 | 461 | |
f0626710 | 462 | queue_work(ib_wq, &sa_dev->port[event->element.port_num - |
1da177e4 LT |
463 | sa_dev->start_port].update_task); |
464 | } | |
465 | } | |
466 | ||
c1a0b23b MT |
467 | void ib_sa_register_client(struct ib_sa_client *client) |
468 | { | |
469 | atomic_set(&client->users, 1); | |
470 | init_completion(&client->comp); | |
471 | } | |
472 | EXPORT_SYMBOL(ib_sa_register_client); | |
473 | ||
c1a0b23b MT |
474 | void ib_sa_unregister_client(struct ib_sa_client *client) |
475 | { | |
476 | ib_sa_client_put(client); | |
477 | wait_for_completion(&client->comp); | |
478 | } | |
479 | EXPORT_SYMBOL(ib_sa_unregister_client); | |
480 | ||
1da177e4 LT |
481 | /** |
482 | * ib_sa_cancel_query - try to cancel an SA query | |
483 | * @id:ID of query to cancel | |
484 | * @query:query pointer to cancel | |
485 | * | |
486 | * Try to cancel an SA query. If the id and query don't match up or | |
487 | * the query has already completed, nothing is done. Otherwise the | |
488 | * query is canceled and will complete with a status of -EINTR. | |
489 | */ | |
490 | void ib_sa_cancel_query(int id, struct ib_sa_query *query) | |
491 | { | |
492 | unsigned long flags; | |
493 | struct ib_mad_agent *agent; | |
34816ad9 | 494 | struct ib_mad_send_buf *mad_buf; |
1da177e4 LT |
495 | |
496 | spin_lock_irqsave(&idr_lock, flags); | |
497 | if (idr_find(&query_idr, id) != query) { | |
498 | spin_unlock_irqrestore(&idr_lock, flags); | |
499 | return; | |
500 | } | |
501 | agent = query->port->agent; | |
34816ad9 | 502 | mad_buf = query->mad_buf; |
1da177e4 LT |
503 | spin_unlock_irqrestore(&idr_lock, flags); |
504 | ||
34816ad9 | 505 | ib_cancel_mad(agent, mad_buf); |
1da177e4 LT |
506 | } |
507 | EXPORT_SYMBOL(ib_sa_cancel_query); | |
508 | ||
d0e7bb14 SH |
509 | static u8 get_src_path_mask(struct ib_device *device, u8 port_num) |
510 | { | |
511 | struct ib_sa_device *sa_dev; | |
512 | struct ib_sa_port *port; | |
513 | unsigned long flags; | |
514 | u8 src_path_mask; | |
515 | ||
516 | sa_dev = ib_get_client_data(device, &sa_client); | |
517 | if (!sa_dev) | |
518 | return 0x7f; | |
519 | ||
520 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
521 | spin_lock_irqsave(&port->ah_lock, flags); | |
522 | src_path_mask = port->sm_ah ? port->sm_ah->src_path_mask : 0x7f; | |
523 | spin_unlock_irqrestore(&port->ah_lock, flags); | |
524 | ||
525 | return src_path_mask; | |
526 | } | |
527 | ||
6d969a47 SH |
528 | int ib_init_ah_from_path(struct ib_device *device, u8 port_num, |
529 | struct ib_sa_path_rec *rec, struct ib_ah_attr *ah_attr) | |
530 | { | |
531 | int ret; | |
532 | u16 gid_index; | |
3c86aa70 | 533 | int force_grh; |
6d969a47 SH |
534 | |
535 | memset(ah_attr, 0, sizeof *ah_attr); | |
536 | ah_attr->dlid = be16_to_cpu(rec->dlid); | |
537 | ah_attr->sl = rec->sl; | |
d0e7bb14 SH |
538 | ah_attr->src_path_bits = be16_to_cpu(rec->slid) & |
539 | get_src_path_mask(device, port_num); | |
6d969a47 | 540 | ah_attr->port_num = port_num; |
7084f842 | 541 | ah_attr->static_rate = rec->rate; |
6d969a47 | 542 | |
3c86aa70 EC |
543 | force_grh = rdma_port_get_link_layer(device, port_num) == IB_LINK_LAYER_ETHERNET; |
544 | ||
545 | if (rec->hop_limit > 1 || force_grh) { | |
6d969a47 SH |
546 | ah_attr->ah_flags = IB_AH_GRH; |
547 | ah_attr->grh.dgid = rec->dgid; | |
548 | ||
549 | ret = ib_find_cached_gid(device, &rec->sgid, &port_num, | |
550 | &gid_index); | |
551 | if (ret) | |
552 | return ret; | |
553 | ||
ca222c6b SH |
554 | ah_attr->grh.sgid_index = gid_index; |
555 | ah_attr->grh.flow_label = be32_to_cpu(rec->flow_label); | |
556 | ah_attr->grh.hop_limit = rec->hop_limit; | |
6d969a47 SH |
557 | ah_attr->grh.traffic_class = rec->traffic_class; |
558 | } | |
dd5f03be MB |
559 | if (force_grh) { |
560 | memcpy(ah_attr->dmac, rec->dmac, ETH_ALEN); | |
561 | ah_attr->vlan_id = rec->vlan_id; | |
562 | } else { | |
563 | ah_attr->vlan_id = 0xffff; | |
564 | } | |
565 | ||
6d969a47 SH |
566 | return 0; |
567 | } | |
568 | EXPORT_SYMBOL(ib_init_ah_from_path); | |
569 | ||
2aec5c60 SH |
570 | static int alloc_mad(struct ib_sa_query *query, gfp_t gfp_mask) |
571 | { | |
572 | unsigned long flags; | |
573 | ||
574 | spin_lock_irqsave(&query->port->ah_lock, flags); | |
164ba089 MS |
575 | if (!query->port->sm_ah) { |
576 | spin_unlock_irqrestore(&query->port->ah_lock, flags); | |
577 | return -EAGAIN; | |
578 | } | |
2aec5c60 SH |
579 | kref_get(&query->port->sm_ah->ref); |
580 | query->sm_ah = query->port->sm_ah; | |
581 | spin_unlock_irqrestore(&query->port->ah_lock, flags); | |
582 | ||
583 | query->mad_buf = ib_create_send_mad(query->port->agent, 1, | |
584 | query->sm_ah->pkey_index, | |
585 | 0, IB_MGMT_SA_HDR, IB_MGMT_SA_DATA, | |
586 | gfp_mask); | |
3c10c7c9 | 587 | if (IS_ERR(query->mad_buf)) { |
2aec5c60 SH |
588 | kref_put(&query->sm_ah->ref, free_sm_ah); |
589 | return -ENOMEM; | |
590 | } | |
591 | ||
592 | query->mad_buf->ah = query->sm_ah->ah; | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
597 | static void free_mad(struct ib_sa_query *query) | |
598 | { | |
599 | ib_free_send_mad(query->mad_buf); | |
600 | kref_put(&query->sm_ah->ref, free_sm_ah); | |
601 | } | |
602 | ||
1da177e4 LT |
603 | static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent) |
604 | { | |
605 | unsigned long flags; | |
606 | ||
607 | memset(mad, 0, sizeof *mad); | |
608 | ||
609 | mad->mad_hdr.base_version = IB_MGMT_BASE_VERSION; | |
610 | mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM; | |
611 | mad->mad_hdr.class_version = IB_SA_CLASS_VERSION; | |
612 | ||
613 | spin_lock_irqsave(&tid_lock, flags); | |
614 | mad->mad_hdr.tid = | |
615 | cpu_to_be64(((u64) agent->hi_tid) << 32 | tid++); | |
616 | spin_unlock_irqrestore(&tid_lock, flags); | |
617 | } | |
618 | ||
e322fedf | 619 | static int send_mad(struct ib_sa_query *query, int timeout_ms, gfp_t gfp_mask) |
1da177e4 | 620 | { |
5343c00d | 621 | bool preload = !!(gfp_mask & __GFP_WAIT); |
1da177e4 | 622 | unsigned long flags; |
34816ad9 | 623 | int ret, id; |
1da177e4 | 624 | |
3b069c5d TH |
625 | if (preload) |
626 | idr_preload(gfp_mask); | |
1da177e4 | 627 | spin_lock_irqsave(&idr_lock, flags); |
3b069c5d TH |
628 | |
629 | id = idr_alloc(&query_idr, query, 0, 0, GFP_NOWAIT); | |
630 | ||
1da177e4 | 631 | spin_unlock_irqrestore(&idr_lock, flags); |
3b069c5d TH |
632 | if (preload) |
633 | idr_preload_end(); | |
634 | if (id < 0) | |
635 | return id; | |
1da177e4 | 636 | |
34816ad9 SH |
637 | query->mad_buf->timeout_ms = timeout_ms; |
638 | query->mad_buf->context[0] = query; | |
639 | query->id = id; | |
1da177e4 | 640 | |
34816ad9 | 641 | ret = ib_post_send_mad(query->mad_buf, NULL); |
1da177e4 | 642 | if (ret) { |
1da177e4 | 643 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 644 | idr_remove(&query_idr, id); |
1da177e4 LT |
645 | spin_unlock_irqrestore(&idr_lock, flags); |
646 | } | |
647 | ||
dae4c1d2 RD |
648 | /* |
649 | * It's not safe to dereference query any more, because the | |
650 | * send may already have completed and freed the query in | |
34816ad9 | 651 | * another context. |
dae4c1d2 | 652 | */ |
34816ad9 | 653 | return ret ? ret : id; |
1da177e4 LT |
654 | } |
655 | ||
a7ca1f00 SH |
656 | void ib_sa_unpack_path(void *attribute, struct ib_sa_path_rec *rec) |
657 | { | |
658 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), attribute, rec); | |
659 | } | |
660 | EXPORT_SYMBOL(ib_sa_unpack_path); | |
661 | ||
2e08b587 SH |
662 | void ib_sa_pack_path(struct ib_sa_path_rec *rec, void *attribute) |
663 | { | |
664 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, attribute); | |
665 | } | |
666 | EXPORT_SYMBOL(ib_sa_pack_path); | |
667 | ||
1da177e4 LT |
668 | static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query, |
669 | int status, | |
670 | struct ib_sa_mad *mad) | |
671 | { | |
672 | struct ib_sa_path_query *query = | |
673 | container_of(sa_query, struct ib_sa_path_query, sa_query); | |
674 | ||
675 | if (mad) { | |
676 | struct ib_sa_path_rec rec; | |
677 | ||
678 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), | |
679 | mad->data, &rec); | |
dd5f03be MB |
680 | rec.vlan_id = 0xffff; |
681 | memset(rec.dmac, 0, ETH_ALEN); | |
682 | memset(rec.smac, 0, ETH_ALEN); | |
1da177e4 LT |
683 | query->callback(status, &rec, query->context); |
684 | } else | |
685 | query->callback(status, NULL, query->context); | |
686 | } | |
687 | ||
688 | static void ib_sa_path_rec_release(struct ib_sa_query *sa_query) | |
689 | { | |
1da177e4 LT |
690 | kfree(container_of(sa_query, struct ib_sa_path_query, sa_query)); |
691 | } | |
692 | ||
693 | /** | |
694 | * ib_sa_path_rec_get - Start a Path get query | |
c1a0b23b | 695 | * @client:SA client |
1da177e4 LT |
696 | * @device:device to send query on |
697 | * @port_num: port number to send query on | |
698 | * @rec:Path Record to send in query | |
699 | * @comp_mask:component mask to send in query | |
700 | * @timeout_ms:time to wait for response | |
701 | * @gfp_mask:GFP mask to use for internal allocations | |
702 | * @callback:function called when query completes, times out or is | |
703 | * canceled | |
704 | * @context:opaque user context passed to callback | |
705 | * @sa_query:query context, used to cancel query | |
706 | * | |
707 | * Send a Path Record Get query to the SA to look up a path. The | |
708 | * callback function will be called when the query completes (or | |
709 | * fails); status is 0 for a successful response, -EINTR if the query | |
710 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
711 | * occurred sending the query. The resp parameter of the callback is | |
712 | * only valid if status is 0. | |
713 | * | |
714 | * If the return value of ib_sa_path_rec_get() is negative, it is an | |
715 | * error code. Otherwise it is a query ID that can be used to cancel | |
716 | * the query. | |
717 | */ | |
c1a0b23b MT |
718 | int ib_sa_path_rec_get(struct ib_sa_client *client, |
719 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
720 | struct ib_sa_path_rec *rec, |
721 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 722 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
723 | void (*callback)(int status, |
724 | struct ib_sa_path_rec *resp, | |
725 | void *context), | |
726 | void *context, | |
727 | struct ib_sa_query **sa_query) | |
728 | { | |
729 | struct ib_sa_path_query *query; | |
730 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
731 | struct ib_sa_port *port; |
732 | struct ib_mad_agent *agent; | |
34816ad9 | 733 | struct ib_sa_mad *mad; |
1da177e4 LT |
734 | int ret; |
735 | ||
56c202d6 RD |
736 | if (!sa_dev) |
737 | return -ENODEV; | |
738 | ||
739 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
740 | agent = port->agent; | |
741 | ||
1da177e4 LT |
742 | query = kmalloc(sizeof *query, gfp_mask); |
743 | if (!query) | |
744 | return -ENOMEM; | |
34816ad9 | 745 | |
2aec5c60 SH |
746 | query->sa_query.port = port; |
747 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
748 | if (ret) | |
34816ad9 | 749 | goto err1; |
1da177e4 | 750 | |
c1a0b23b MT |
751 | ib_sa_client_get(client); |
752 | query->sa_query.client = client; | |
753 | query->callback = callback; | |
754 | query->context = context; | |
1da177e4 | 755 | |
34816ad9 SH |
756 | mad = query->sa_query.mad_buf->mad; |
757 | init_mad(mad, agent); | |
1da177e4 | 758 | |
34816ad9 SH |
759 | query->sa_query.callback = callback ? ib_sa_path_rec_callback : NULL; |
760 | query->sa_query.release = ib_sa_path_rec_release; | |
34816ad9 SH |
761 | mad->mad_hdr.method = IB_MGMT_METHOD_GET; |
762 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_PATH_REC); | |
763 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 | 764 | |
34816ad9 | 765 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, mad->data); |
1da177e4 LT |
766 | |
767 | *sa_query = &query->sa_query; | |
dae4c1d2 | 768 | |
e322fedf | 769 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
770 | if (ret < 0) |
771 | goto err2; | |
772 | ||
773 | return ret; | |
774 | ||
775 | err2: | |
776 | *sa_query = NULL; | |
c1a0b23b | 777 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 778 | free_mad(&query->sa_query); |
1da177e4 | 779 | |
34816ad9 SH |
780 | err1: |
781 | kfree(query); | |
dae4c1d2 | 782 | return ret; |
1da177e4 LT |
783 | } |
784 | EXPORT_SYMBOL(ib_sa_path_rec_get); | |
785 | ||
cbae32c5 HR |
786 | static void ib_sa_service_rec_callback(struct ib_sa_query *sa_query, |
787 | int status, | |
788 | struct ib_sa_mad *mad) | |
789 | { | |
790 | struct ib_sa_service_query *query = | |
791 | container_of(sa_query, struct ib_sa_service_query, sa_query); | |
792 | ||
793 | if (mad) { | |
794 | struct ib_sa_service_rec rec; | |
795 | ||
796 | ib_unpack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
797 | mad->data, &rec); | |
798 | query->callback(status, &rec, query->context); | |
799 | } else | |
800 | query->callback(status, NULL, query->context); | |
801 | } | |
802 | ||
803 | static void ib_sa_service_rec_release(struct ib_sa_query *sa_query) | |
804 | { | |
cbae32c5 HR |
805 | kfree(container_of(sa_query, struct ib_sa_service_query, sa_query)); |
806 | } | |
807 | ||
808 | /** | |
809 | * ib_sa_service_rec_query - Start Service Record operation | |
c1a0b23b | 810 | * @client:SA client |
cbae32c5 HR |
811 | * @device:device to send request on |
812 | * @port_num: port number to send request on | |
813 | * @method:SA method - should be get, set, or delete | |
814 | * @rec:Service Record to send in request | |
815 | * @comp_mask:component mask to send in request | |
816 | * @timeout_ms:time to wait for response | |
817 | * @gfp_mask:GFP mask to use for internal allocations | |
818 | * @callback:function called when request completes, times out or is | |
819 | * canceled | |
820 | * @context:opaque user context passed to callback | |
821 | * @sa_query:request context, used to cancel request | |
822 | * | |
823 | * Send a Service Record set/get/delete to the SA to register, | |
824 | * unregister or query a service record. | |
825 | * The callback function will be called when the request completes (or | |
826 | * fails); status is 0 for a successful response, -EINTR if the query | |
827 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
828 | * occurred sending the query. The resp parameter of the callback is | |
829 | * only valid if status is 0. | |
830 | * | |
831 | * If the return value of ib_sa_service_rec_query() is negative, it is an | |
832 | * error code. Otherwise it is a request ID that can be used to cancel | |
833 | * the query. | |
834 | */ | |
c1a0b23b MT |
835 | int ib_sa_service_rec_query(struct ib_sa_client *client, |
836 | struct ib_device *device, u8 port_num, u8 method, | |
cbae32c5 HR |
837 | struct ib_sa_service_rec *rec, |
838 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 839 | int timeout_ms, gfp_t gfp_mask, |
cbae32c5 HR |
840 | void (*callback)(int status, |
841 | struct ib_sa_service_rec *resp, | |
842 | void *context), | |
843 | void *context, | |
844 | struct ib_sa_query **sa_query) | |
845 | { | |
846 | struct ib_sa_service_query *query; | |
847 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
848 | struct ib_sa_port *port; |
849 | struct ib_mad_agent *agent; | |
34816ad9 | 850 | struct ib_sa_mad *mad; |
cbae32c5 HR |
851 | int ret; |
852 | ||
56c202d6 RD |
853 | if (!sa_dev) |
854 | return -ENODEV; | |
855 | ||
856 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
857 | agent = port->agent; | |
858 | ||
cbae32c5 HR |
859 | if (method != IB_MGMT_METHOD_GET && |
860 | method != IB_MGMT_METHOD_SET && | |
861 | method != IB_SA_METHOD_DELETE) | |
862 | return -EINVAL; | |
863 | ||
864 | query = kmalloc(sizeof *query, gfp_mask); | |
865 | if (!query) | |
866 | return -ENOMEM; | |
34816ad9 | 867 | |
2aec5c60 SH |
868 | query->sa_query.port = port; |
869 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
870 | if (ret) | |
34816ad9 | 871 | goto err1; |
cbae32c5 | 872 | |
c1a0b23b MT |
873 | ib_sa_client_get(client); |
874 | query->sa_query.client = client; | |
875 | query->callback = callback; | |
876 | query->context = context; | |
cbae32c5 | 877 | |
34816ad9 SH |
878 | mad = query->sa_query.mad_buf->mad; |
879 | init_mad(mad, agent); | |
cbae32c5 | 880 | |
34816ad9 SH |
881 | query->sa_query.callback = callback ? ib_sa_service_rec_callback : NULL; |
882 | query->sa_query.release = ib_sa_service_rec_release; | |
34816ad9 SH |
883 | mad->mad_hdr.method = method; |
884 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_SERVICE_REC); | |
885 | mad->sa_hdr.comp_mask = comp_mask; | |
cbae32c5 HR |
886 | |
887 | ib_pack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
34816ad9 | 888 | rec, mad->data); |
cbae32c5 HR |
889 | |
890 | *sa_query = &query->sa_query; | |
891 | ||
e322fedf | 892 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
893 | if (ret < 0) |
894 | goto err2; | |
895 | ||
896 | return ret; | |
cbae32c5 | 897 | |
34816ad9 SH |
898 | err2: |
899 | *sa_query = NULL; | |
c1a0b23b | 900 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 901 | free_mad(&query->sa_query); |
34816ad9 SH |
902 | |
903 | err1: | |
904 | kfree(query); | |
cbae32c5 HR |
905 | return ret; |
906 | } | |
907 | EXPORT_SYMBOL(ib_sa_service_rec_query); | |
908 | ||
1da177e4 LT |
909 | static void ib_sa_mcmember_rec_callback(struct ib_sa_query *sa_query, |
910 | int status, | |
911 | struct ib_sa_mad *mad) | |
912 | { | |
913 | struct ib_sa_mcmember_query *query = | |
914 | container_of(sa_query, struct ib_sa_mcmember_query, sa_query); | |
915 | ||
916 | if (mad) { | |
917 | struct ib_sa_mcmember_rec rec; | |
918 | ||
919 | ib_unpack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
920 | mad->data, &rec); | |
921 | query->callback(status, &rec, query->context); | |
922 | } else | |
923 | query->callback(status, NULL, query->context); | |
924 | } | |
925 | ||
926 | static void ib_sa_mcmember_rec_release(struct ib_sa_query *sa_query) | |
927 | { | |
1da177e4 LT |
928 | kfree(container_of(sa_query, struct ib_sa_mcmember_query, sa_query)); |
929 | } | |
930 | ||
c1a0b23b MT |
931 | int ib_sa_mcmember_rec_query(struct ib_sa_client *client, |
932 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
933 | u8 method, |
934 | struct ib_sa_mcmember_rec *rec, | |
935 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 936 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
937 | void (*callback)(int status, |
938 | struct ib_sa_mcmember_rec *resp, | |
939 | void *context), | |
940 | void *context, | |
941 | struct ib_sa_query **sa_query) | |
942 | { | |
943 | struct ib_sa_mcmember_query *query; | |
944 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
945 | struct ib_sa_port *port; |
946 | struct ib_mad_agent *agent; | |
34816ad9 | 947 | struct ib_sa_mad *mad; |
1da177e4 LT |
948 | int ret; |
949 | ||
56c202d6 RD |
950 | if (!sa_dev) |
951 | return -ENODEV; | |
952 | ||
953 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
954 | agent = port->agent; | |
955 | ||
1da177e4 LT |
956 | query = kmalloc(sizeof *query, gfp_mask); |
957 | if (!query) | |
958 | return -ENOMEM; | |
34816ad9 | 959 | |
2aec5c60 SH |
960 | query->sa_query.port = port; |
961 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
962 | if (ret) | |
34816ad9 | 963 | goto err1; |
1da177e4 | 964 | |
c1a0b23b MT |
965 | ib_sa_client_get(client); |
966 | query->sa_query.client = client; | |
967 | query->callback = callback; | |
968 | query->context = context; | |
1da177e4 | 969 | |
34816ad9 SH |
970 | mad = query->sa_query.mad_buf->mad; |
971 | init_mad(mad, agent); | |
1da177e4 | 972 | |
34816ad9 SH |
973 | query->sa_query.callback = callback ? ib_sa_mcmember_rec_callback : NULL; |
974 | query->sa_query.release = ib_sa_mcmember_rec_release; | |
34816ad9 SH |
975 | mad->mad_hdr.method = method; |
976 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC); | |
977 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 LT |
978 | |
979 | ib_pack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
34816ad9 | 980 | rec, mad->data); |
1da177e4 LT |
981 | |
982 | *sa_query = &query->sa_query; | |
dae4c1d2 | 983 | |
e322fedf | 984 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
985 | if (ret < 0) |
986 | goto err2; | |
1da177e4 | 987 | |
dae4c1d2 | 988 | return ret; |
34816ad9 SH |
989 | |
990 | err2: | |
991 | *sa_query = NULL; | |
c1a0b23b | 992 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 993 | free_mad(&query->sa_query); |
34816ad9 SH |
994 | |
995 | err1: | |
996 | kfree(query); | |
997 | return ret; | |
1da177e4 | 998 | } |
1da177e4 | 999 | |
aeab97ed ES |
1000 | /* Support GuidInfoRecord */ |
1001 | static void ib_sa_guidinfo_rec_callback(struct ib_sa_query *sa_query, | |
1002 | int status, | |
1003 | struct ib_sa_mad *mad) | |
1004 | { | |
1005 | struct ib_sa_guidinfo_query *query = | |
1006 | container_of(sa_query, struct ib_sa_guidinfo_query, sa_query); | |
1007 | ||
1008 | if (mad) { | |
1009 | struct ib_sa_guidinfo_rec rec; | |
1010 | ||
1011 | ib_unpack(guidinfo_rec_table, ARRAY_SIZE(guidinfo_rec_table), | |
1012 | mad->data, &rec); | |
1013 | query->callback(status, &rec, query->context); | |
1014 | } else | |
1015 | query->callback(status, NULL, query->context); | |
1016 | } | |
1017 | ||
1018 | static void ib_sa_guidinfo_rec_release(struct ib_sa_query *sa_query) | |
1019 | { | |
1020 | kfree(container_of(sa_query, struct ib_sa_guidinfo_query, sa_query)); | |
1021 | } | |
1022 | ||
1023 | int ib_sa_guid_info_rec_query(struct ib_sa_client *client, | |
1024 | struct ib_device *device, u8 port_num, | |
1025 | struct ib_sa_guidinfo_rec *rec, | |
1026 | ib_sa_comp_mask comp_mask, u8 method, | |
1027 | int timeout_ms, gfp_t gfp_mask, | |
1028 | void (*callback)(int status, | |
1029 | struct ib_sa_guidinfo_rec *resp, | |
1030 | void *context), | |
1031 | void *context, | |
1032 | struct ib_sa_query **sa_query) | |
1033 | { | |
1034 | struct ib_sa_guidinfo_query *query; | |
1035 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
1036 | struct ib_sa_port *port; | |
1037 | struct ib_mad_agent *agent; | |
1038 | struct ib_sa_mad *mad; | |
1039 | int ret; | |
1040 | ||
1041 | if (!sa_dev) | |
1042 | return -ENODEV; | |
1043 | ||
1044 | if (method != IB_MGMT_METHOD_GET && | |
1045 | method != IB_MGMT_METHOD_SET && | |
1046 | method != IB_SA_METHOD_DELETE) { | |
1047 | return -EINVAL; | |
1048 | } | |
1049 | ||
1050 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
1051 | agent = port->agent; | |
1052 | ||
1053 | query = kmalloc(sizeof *query, gfp_mask); | |
1054 | if (!query) | |
1055 | return -ENOMEM; | |
1056 | ||
1057 | query->sa_query.port = port; | |
1058 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
1059 | if (ret) | |
1060 | goto err1; | |
1061 | ||
1062 | ib_sa_client_get(client); | |
1063 | query->sa_query.client = client; | |
1064 | query->callback = callback; | |
1065 | query->context = context; | |
1066 | ||
1067 | mad = query->sa_query.mad_buf->mad; | |
1068 | init_mad(mad, agent); | |
1069 | ||
1070 | query->sa_query.callback = callback ? ib_sa_guidinfo_rec_callback : NULL; | |
1071 | query->sa_query.release = ib_sa_guidinfo_rec_release; | |
1072 | ||
1073 | mad->mad_hdr.method = method; | |
1074 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_GUID_INFO_REC); | |
1075 | mad->sa_hdr.comp_mask = comp_mask; | |
1076 | ||
1077 | ib_pack(guidinfo_rec_table, ARRAY_SIZE(guidinfo_rec_table), rec, | |
1078 | mad->data); | |
1079 | ||
1080 | *sa_query = &query->sa_query; | |
1081 | ||
1082 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); | |
1083 | if (ret < 0) | |
1084 | goto err2; | |
1085 | ||
1086 | return ret; | |
1087 | ||
1088 | err2: | |
1089 | *sa_query = NULL; | |
1090 | ib_sa_client_put(query->sa_query.client); | |
1091 | free_mad(&query->sa_query); | |
1092 | ||
1093 | err1: | |
1094 | kfree(query); | |
1095 | return ret; | |
1096 | } | |
1097 | EXPORT_SYMBOL(ib_sa_guid_info_rec_query); | |
1098 | ||
1da177e4 LT |
1099 | static void send_handler(struct ib_mad_agent *agent, |
1100 | struct ib_mad_send_wc *mad_send_wc) | |
1101 | { | |
34816ad9 | 1102 | struct ib_sa_query *query = mad_send_wc->send_buf->context[0]; |
1da177e4 LT |
1103 | unsigned long flags; |
1104 | ||
e4f50f00 RD |
1105 | if (query->callback) |
1106 | switch (mad_send_wc->status) { | |
1107 | case IB_WC_SUCCESS: | |
1108 | /* No callback -- already got recv */ | |
1109 | break; | |
1110 | case IB_WC_RESP_TIMEOUT_ERR: | |
1111 | query->callback(query, -ETIMEDOUT, NULL); | |
1112 | break; | |
1113 | case IB_WC_WR_FLUSH_ERR: | |
1114 | query->callback(query, -EINTR, NULL); | |
1115 | break; | |
1116 | default: | |
1117 | query->callback(query, -EIO, NULL); | |
1118 | break; | |
1119 | } | |
1da177e4 | 1120 | |
1da177e4 | 1121 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 1122 | idr_remove(&query_idr, query->id); |
1da177e4 | 1123 | spin_unlock_irqrestore(&idr_lock, flags); |
34816ad9 | 1124 | |
2aec5c60 | 1125 | free_mad(query); |
c1a0b23b | 1126 | ib_sa_client_put(query->client); |
34816ad9 | 1127 | query->release(query); |
1da177e4 LT |
1128 | } |
1129 | ||
1130 | static void recv_handler(struct ib_mad_agent *mad_agent, | |
1131 | struct ib_mad_recv_wc *mad_recv_wc) | |
1132 | { | |
1133 | struct ib_sa_query *query; | |
34816ad9 | 1134 | struct ib_mad_send_buf *mad_buf; |
1da177e4 | 1135 | |
34816ad9 SH |
1136 | mad_buf = (void *) (unsigned long) mad_recv_wc->wc->wr_id; |
1137 | query = mad_buf->context[0]; | |
1da177e4 | 1138 | |
34816ad9 | 1139 | if (query->callback) { |
1da177e4 LT |
1140 | if (mad_recv_wc->wc->status == IB_WC_SUCCESS) |
1141 | query->callback(query, | |
1142 | mad_recv_wc->recv_buf.mad->mad_hdr.status ? | |
1143 | -EINVAL : 0, | |
1144 | (struct ib_sa_mad *) mad_recv_wc->recv_buf.mad); | |
1145 | else | |
1146 | query->callback(query, -EIO, NULL); | |
1147 | } | |
1148 | ||
1149 | ib_free_recv_mad(mad_recv_wc); | |
1150 | } | |
1151 | ||
1152 | static void ib_sa_add_one(struct ib_device *device) | |
1153 | { | |
1154 | struct ib_sa_device *sa_dev; | |
1155 | int s, e, i; | |
1156 | ||
07ebafba TT |
1157 | if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB) |
1158 | return; | |
1159 | ||
1160 | if (device->node_type == RDMA_NODE_IB_SWITCH) | |
1da177e4 LT |
1161 | s = e = 0; |
1162 | else { | |
1163 | s = 1; | |
1164 | e = device->phys_port_cnt; | |
1165 | } | |
1166 | ||
fac70d51 | 1167 | sa_dev = kzalloc(sizeof *sa_dev + |
1da177e4 LT |
1168 | (e - s + 1) * sizeof (struct ib_sa_port), |
1169 | GFP_KERNEL); | |
1170 | if (!sa_dev) | |
1171 | return; | |
1172 | ||
1173 | sa_dev->start_port = s; | |
1174 | sa_dev->end_port = e; | |
1175 | ||
1176 | for (i = 0; i <= e - s; ++i) { | |
fac70d51 EC |
1177 | spin_lock_init(&sa_dev->port[i].ah_lock); |
1178 | if (rdma_port_get_link_layer(device, i + 1) != IB_LINK_LAYER_INFINIBAND) | |
1179 | continue; | |
1180 | ||
1da177e4 LT |
1181 | sa_dev->port[i].sm_ah = NULL; |
1182 | sa_dev->port[i].port_num = i + s; | |
1da177e4 LT |
1183 | |
1184 | sa_dev->port[i].agent = | |
1185 | ib_register_mad_agent(device, i + s, IB_QPT_GSI, | |
1186 | NULL, 0, send_handler, | |
1187 | recv_handler, sa_dev); | |
1188 | if (IS_ERR(sa_dev->port[i].agent)) | |
1189 | goto err; | |
1190 | ||
c4028958 | 1191 | INIT_WORK(&sa_dev->port[i].update_task, update_sm_ah); |
1da177e4 LT |
1192 | } |
1193 | ||
1194 | ib_set_client_data(device, &sa_client, sa_dev); | |
1195 | ||
1196 | /* | |
1197 | * We register our event handler after everything is set up, | |
1198 | * and then update our cached info after the event handler is | |
1199 | * registered to avoid any problems if a port changes state | |
1200 | * during our initialization. | |
1201 | */ | |
1202 | ||
1203 | INIT_IB_EVENT_HANDLER(&sa_dev->event_handler, device, ib_sa_event); | |
1204 | if (ib_register_event_handler(&sa_dev->event_handler)) | |
1205 | goto err; | |
1206 | ||
1207 | for (i = 0; i <= e - s; ++i) | |
fac70d51 EC |
1208 | if (rdma_port_get_link_layer(device, i + 1) == IB_LINK_LAYER_INFINIBAND) |
1209 | update_sm_ah(&sa_dev->port[i].update_task); | |
1da177e4 LT |
1210 | |
1211 | return; | |
1212 | ||
1213 | err: | |
b82cab6b | 1214 | while (--i >= 0) |
fac70d51 EC |
1215 | if (rdma_port_get_link_layer(device, i + 1) == IB_LINK_LAYER_INFINIBAND) |
1216 | ib_unregister_mad_agent(sa_dev->port[i].agent); | |
1da177e4 LT |
1217 | |
1218 | kfree(sa_dev); | |
1219 | ||
1220 | return; | |
1221 | } | |
1222 | ||
1223 | static void ib_sa_remove_one(struct ib_device *device) | |
1224 | { | |
1225 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
1226 | int i; | |
1227 | ||
1228 | if (!sa_dev) | |
1229 | return; | |
1230 | ||
1231 | ib_unregister_event_handler(&sa_dev->event_handler); | |
1232 | ||
96e61fa5 | 1233 | flush_workqueue(ib_wq); |
0f47ae0b | 1234 | |
1da177e4 | 1235 | for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) { |
fac70d51 EC |
1236 | if (rdma_port_get_link_layer(device, i + 1) == IB_LINK_LAYER_INFINIBAND) { |
1237 | ib_unregister_mad_agent(sa_dev->port[i].agent); | |
1238 | if (sa_dev->port[i].sm_ah) | |
1239 | kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah); | |
1240 | } | |
1241 | ||
1da177e4 LT |
1242 | } |
1243 | ||
1244 | kfree(sa_dev); | |
1245 | } | |
1246 | ||
1247 | static int __init ib_sa_init(void) | |
1248 | { | |
1249 | int ret; | |
1250 | ||
1da177e4 LT |
1251 | get_random_bytes(&tid, sizeof tid); |
1252 | ||
1253 | ret = ib_register_client(&sa_client); | |
faec2f7b | 1254 | if (ret) { |
1da177e4 | 1255 | printk(KERN_ERR "Couldn't register ib_sa client\n"); |
faec2f7b SH |
1256 | goto err1; |
1257 | } | |
1258 | ||
1259 | ret = mcast_init(); | |
1260 | if (ret) { | |
1261 | printk(KERN_ERR "Couldn't initialize multicast handling\n"); | |
1262 | goto err2; | |
1263 | } | |
1da177e4 | 1264 | |
faec2f7b SH |
1265 | return 0; |
1266 | err2: | |
1267 | ib_unregister_client(&sa_client); | |
1268 | err1: | |
1da177e4 LT |
1269 | return ret; |
1270 | } | |
1271 | ||
1272 | static void __exit ib_sa_cleanup(void) | |
1273 | { | |
faec2f7b | 1274 | mcast_cleanup(); |
1da177e4 | 1275 | ib_unregister_client(&sa_client); |
5d7edb3c | 1276 | idr_destroy(&query_idr); |
1da177e4 LT |
1277 | } |
1278 | ||
1279 | module_init(ib_sa_init); | |
1280 | module_exit(ib_sa_cleanup); |