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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> |
2ca546b9 KW |
48 | #include <rdma/rdma_netlink.h> |
49 | #include <net/netlink.h> | |
50 | #include <uapi/rdma/ib_user_sa.h> | |
51 | #include <rdma/ib_marshall.h> | |
20029832 | 52 | #include <rdma/ib_addr.h> |
faec2f7b | 53 | #include "sa.h" |
20029832 | 54 | #include "core_priv.h" |
1da177e4 | 55 | |
2ca546b9 KW |
56 | #define IB_SA_LOCAL_SVC_TIMEOUT_MIN 100 |
57 | #define IB_SA_LOCAL_SVC_TIMEOUT_DEFAULT 2000 | |
58 | #define IB_SA_LOCAL_SVC_TIMEOUT_MAX 200000 | |
59 | static int sa_local_svc_timeout_ms = IB_SA_LOCAL_SVC_TIMEOUT_DEFAULT; | |
60 | ||
1da177e4 LT |
61 | struct ib_sa_sm_ah { |
62 | struct ib_ah *ah; | |
63 | struct kref ref; | |
2aec5c60 | 64 | u16 pkey_index; |
d0e7bb14 | 65 | u8 src_path_mask; |
1da177e4 LT |
66 | }; |
67 | ||
3d3fd742 AV |
68 | struct ib_sa_classport_cache { |
69 | bool valid; | |
70 | struct ib_class_port_info data; | |
71 | }; | |
72 | ||
1da177e4 LT |
73 | struct ib_sa_port { |
74 | struct ib_mad_agent *agent; | |
1da177e4 LT |
75 | struct ib_sa_sm_ah *sm_ah; |
76 | struct work_struct update_task; | |
3d3fd742 AV |
77 | struct ib_sa_classport_cache classport_info; |
78 | spinlock_t classport_lock; /* protects class port info set */ | |
1da177e4 LT |
79 | spinlock_t ah_lock; |
80 | u8 port_num; | |
81 | }; | |
82 | ||
83 | struct ib_sa_device { | |
84 | int start_port, end_port; | |
85 | struct ib_event_handler event_handler; | |
86 | struct ib_sa_port port[0]; | |
87 | }; | |
88 | ||
89 | struct ib_sa_query { | |
90 | void (*callback)(struct ib_sa_query *, int, struct ib_sa_mad *); | |
91 | void (*release)(struct ib_sa_query *); | |
c1a0b23b | 92 | struct ib_sa_client *client; |
34816ad9 SH |
93 | struct ib_sa_port *port; |
94 | struct ib_mad_send_buf *mad_buf; | |
95 | struct ib_sa_sm_ah *sm_ah; | |
96 | int id; | |
2ca546b9 KW |
97 | u32 flags; |
98 | struct list_head list; /* Local svc request list */ | |
99 | u32 seq; /* Local svc request sequence number */ | |
100 | unsigned long timeout; /* Local svc timeout */ | |
101 | u8 path_use; /* How will the pathrecord be used */ | |
1da177e4 LT |
102 | }; |
103 | ||
2ca546b9 KW |
104 | #define IB_SA_ENABLE_LOCAL_SERVICE 0x00000001 |
105 | #define IB_SA_CANCEL 0x00000002 | |
106 | ||
cbae32c5 HR |
107 | struct ib_sa_service_query { |
108 | void (*callback)(int, struct ib_sa_service_rec *, void *); | |
109 | void *context; | |
110 | struct ib_sa_query sa_query; | |
111 | }; | |
112 | ||
1da177e4 LT |
113 | struct ib_sa_path_query { |
114 | void (*callback)(int, struct ib_sa_path_rec *, void *); | |
115 | void *context; | |
116 | struct ib_sa_query sa_query; | |
117 | }; | |
118 | ||
aeab97ed ES |
119 | struct ib_sa_guidinfo_query { |
120 | void (*callback)(int, struct ib_sa_guidinfo_rec *, void *); | |
121 | void *context; | |
122 | struct ib_sa_query sa_query; | |
123 | }; | |
124 | ||
628e6f75 ES |
125 | struct ib_sa_classport_info_query { |
126 | void (*callback)(int, struct ib_class_port_info *, void *); | |
127 | void *context; | |
128 | struct ib_sa_query sa_query; | |
129 | }; | |
130 | ||
1da177e4 LT |
131 | struct ib_sa_mcmember_query { |
132 | void (*callback)(int, struct ib_sa_mcmember_rec *, void *); | |
133 | void *context; | |
134 | struct ib_sa_query sa_query; | |
135 | }; | |
136 | ||
2ca546b9 KW |
137 | static LIST_HEAD(ib_nl_request_list); |
138 | static DEFINE_SPINLOCK(ib_nl_request_lock); | |
139 | static atomic_t ib_nl_sa_request_seq; | |
140 | static struct workqueue_struct *ib_nl_wq; | |
141 | static struct delayed_work ib_nl_timed_work; | |
142 | static const struct nla_policy ib_nl_policy[LS_NLA_TYPE_MAX] = { | |
143 | [LS_NLA_TYPE_PATH_RECORD] = {.type = NLA_BINARY, | |
144 | .len = sizeof(struct ib_path_rec_data)}, | |
145 | [LS_NLA_TYPE_TIMEOUT] = {.type = NLA_U32}, | |
146 | [LS_NLA_TYPE_SERVICE_ID] = {.type = NLA_U64}, | |
147 | [LS_NLA_TYPE_DGID] = {.type = NLA_BINARY, | |
148 | .len = sizeof(struct rdma_nla_ls_gid)}, | |
149 | [LS_NLA_TYPE_SGID] = {.type = NLA_BINARY, | |
150 | .len = sizeof(struct rdma_nla_ls_gid)}, | |
151 | [LS_NLA_TYPE_TCLASS] = {.type = NLA_U8}, | |
152 | [LS_NLA_TYPE_PKEY] = {.type = NLA_U16}, | |
153 | [LS_NLA_TYPE_QOS_CLASS] = {.type = NLA_U16}, | |
154 | }; | |
155 | ||
156 | ||
1da177e4 | 157 | static void ib_sa_add_one(struct ib_device *device); |
7c1eb45a | 158 | static void ib_sa_remove_one(struct ib_device *device, void *client_data); |
1da177e4 LT |
159 | |
160 | static struct ib_client sa_client = { | |
161 | .name = "sa", | |
162 | .add = ib_sa_add_one, | |
163 | .remove = ib_sa_remove_one | |
164 | }; | |
165 | ||
6276e08a | 166 | static DEFINE_SPINLOCK(idr_lock); |
1da177e4 LT |
167 | static DEFINE_IDR(query_idr); |
168 | ||
6276e08a | 169 | static DEFINE_SPINLOCK(tid_lock); |
1da177e4 LT |
170 | static u32 tid; |
171 | ||
1da177e4 LT |
172 | #define PATH_REC_FIELD(field) \ |
173 | .struct_offset_bytes = offsetof(struct ib_sa_path_rec, field), \ | |
174 | .struct_size_bytes = sizeof ((struct ib_sa_path_rec *) 0)->field, \ | |
175 | .field_name = "sa_path_rec:" #field | |
176 | ||
177 | static const struct ib_field path_rec_table[] = { | |
733d65fe | 178 | { PATH_REC_FIELD(service_id), |
1da177e4 LT |
179 | .offset_words = 0, |
180 | .offset_bits = 0, | |
733d65fe | 181 | .size_bits = 64 }, |
1da177e4 LT |
182 | { PATH_REC_FIELD(dgid), |
183 | .offset_words = 2, | |
184 | .offset_bits = 0, | |
185 | .size_bits = 128 }, | |
186 | { PATH_REC_FIELD(sgid), | |
187 | .offset_words = 6, | |
188 | .offset_bits = 0, | |
189 | .size_bits = 128 }, | |
190 | { PATH_REC_FIELD(dlid), | |
191 | .offset_words = 10, | |
192 | .offset_bits = 0, | |
193 | .size_bits = 16 }, | |
194 | { PATH_REC_FIELD(slid), | |
195 | .offset_words = 10, | |
196 | .offset_bits = 16, | |
197 | .size_bits = 16 }, | |
198 | { PATH_REC_FIELD(raw_traffic), | |
199 | .offset_words = 11, | |
200 | .offset_bits = 0, | |
201 | .size_bits = 1 }, | |
202 | { RESERVED, | |
203 | .offset_words = 11, | |
204 | .offset_bits = 1, | |
205 | .size_bits = 3 }, | |
206 | { PATH_REC_FIELD(flow_label), | |
207 | .offset_words = 11, | |
208 | .offset_bits = 4, | |
209 | .size_bits = 20 }, | |
210 | { PATH_REC_FIELD(hop_limit), | |
211 | .offset_words = 11, | |
212 | .offset_bits = 24, | |
213 | .size_bits = 8 }, | |
214 | { PATH_REC_FIELD(traffic_class), | |
215 | .offset_words = 12, | |
216 | .offset_bits = 0, | |
217 | .size_bits = 8 }, | |
218 | { PATH_REC_FIELD(reversible), | |
219 | .offset_words = 12, | |
220 | .offset_bits = 8, | |
221 | .size_bits = 1 }, | |
222 | { PATH_REC_FIELD(numb_path), | |
223 | .offset_words = 12, | |
224 | .offset_bits = 9, | |
225 | .size_bits = 7 }, | |
226 | { PATH_REC_FIELD(pkey), | |
227 | .offset_words = 12, | |
228 | .offset_bits = 16, | |
229 | .size_bits = 16 }, | |
733d65fe | 230 | { PATH_REC_FIELD(qos_class), |
1da177e4 LT |
231 | .offset_words = 13, |
232 | .offset_bits = 0, | |
233 | .size_bits = 12 }, | |
234 | { PATH_REC_FIELD(sl), | |
235 | .offset_words = 13, | |
236 | .offset_bits = 12, | |
237 | .size_bits = 4 }, | |
238 | { PATH_REC_FIELD(mtu_selector), | |
239 | .offset_words = 13, | |
240 | .offset_bits = 16, | |
241 | .size_bits = 2 }, | |
242 | { PATH_REC_FIELD(mtu), | |
243 | .offset_words = 13, | |
244 | .offset_bits = 18, | |
245 | .size_bits = 6 }, | |
246 | { PATH_REC_FIELD(rate_selector), | |
247 | .offset_words = 13, | |
248 | .offset_bits = 24, | |
249 | .size_bits = 2 }, | |
250 | { PATH_REC_FIELD(rate), | |
251 | .offset_words = 13, | |
252 | .offset_bits = 26, | |
253 | .size_bits = 6 }, | |
254 | { PATH_REC_FIELD(packet_life_time_selector), | |
255 | .offset_words = 14, | |
256 | .offset_bits = 0, | |
257 | .size_bits = 2 }, | |
258 | { PATH_REC_FIELD(packet_life_time), | |
259 | .offset_words = 14, | |
260 | .offset_bits = 2, | |
261 | .size_bits = 6 }, | |
262 | { PATH_REC_FIELD(preference), | |
263 | .offset_words = 14, | |
264 | .offset_bits = 8, | |
265 | .size_bits = 8 }, | |
266 | { RESERVED, | |
267 | .offset_words = 14, | |
268 | .offset_bits = 16, | |
269 | .size_bits = 48 }, | |
270 | }; | |
271 | ||
272 | #define MCMEMBER_REC_FIELD(field) \ | |
273 | .struct_offset_bytes = offsetof(struct ib_sa_mcmember_rec, field), \ | |
274 | .struct_size_bytes = sizeof ((struct ib_sa_mcmember_rec *) 0)->field, \ | |
275 | .field_name = "sa_mcmember_rec:" #field | |
276 | ||
277 | static const struct ib_field mcmember_rec_table[] = { | |
278 | { MCMEMBER_REC_FIELD(mgid), | |
279 | .offset_words = 0, | |
280 | .offset_bits = 0, | |
281 | .size_bits = 128 }, | |
282 | { MCMEMBER_REC_FIELD(port_gid), | |
283 | .offset_words = 4, | |
284 | .offset_bits = 0, | |
285 | .size_bits = 128 }, | |
286 | { MCMEMBER_REC_FIELD(qkey), | |
287 | .offset_words = 8, | |
288 | .offset_bits = 0, | |
289 | .size_bits = 32 }, | |
290 | { MCMEMBER_REC_FIELD(mlid), | |
291 | .offset_words = 9, | |
292 | .offset_bits = 0, | |
293 | .size_bits = 16 }, | |
294 | { MCMEMBER_REC_FIELD(mtu_selector), | |
295 | .offset_words = 9, | |
296 | .offset_bits = 16, | |
297 | .size_bits = 2 }, | |
298 | { MCMEMBER_REC_FIELD(mtu), | |
299 | .offset_words = 9, | |
300 | .offset_bits = 18, | |
301 | .size_bits = 6 }, | |
302 | { MCMEMBER_REC_FIELD(traffic_class), | |
303 | .offset_words = 9, | |
304 | .offset_bits = 24, | |
305 | .size_bits = 8 }, | |
306 | { MCMEMBER_REC_FIELD(pkey), | |
307 | .offset_words = 10, | |
308 | .offset_bits = 0, | |
309 | .size_bits = 16 }, | |
310 | { MCMEMBER_REC_FIELD(rate_selector), | |
311 | .offset_words = 10, | |
312 | .offset_bits = 16, | |
313 | .size_bits = 2 }, | |
314 | { MCMEMBER_REC_FIELD(rate), | |
315 | .offset_words = 10, | |
316 | .offset_bits = 18, | |
317 | .size_bits = 6 }, | |
318 | { MCMEMBER_REC_FIELD(packet_life_time_selector), | |
319 | .offset_words = 10, | |
320 | .offset_bits = 24, | |
321 | .size_bits = 2 }, | |
322 | { MCMEMBER_REC_FIELD(packet_life_time), | |
323 | .offset_words = 10, | |
324 | .offset_bits = 26, | |
325 | .size_bits = 6 }, | |
326 | { MCMEMBER_REC_FIELD(sl), | |
327 | .offset_words = 11, | |
328 | .offset_bits = 0, | |
329 | .size_bits = 4 }, | |
330 | { MCMEMBER_REC_FIELD(flow_label), | |
331 | .offset_words = 11, | |
332 | .offset_bits = 4, | |
333 | .size_bits = 20 }, | |
334 | { MCMEMBER_REC_FIELD(hop_limit), | |
335 | .offset_words = 11, | |
336 | .offset_bits = 24, | |
337 | .size_bits = 8 }, | |
338 | { MCMEMBER_REC_FIELD(scope), | |
339 | .offset_words = 12, | |
340 | .offset_bits = 0, | |
341 | .size_bits = 4 }, | |
342 | { MCMEMBER_REC_FIELD(join_state), | |
343 | .offset_words = 12, | |
344 | .offset_bits = 4, | |
345 | .size_bits = 4 }, | |
346 | { MCMEMBER_REC_FIELD(proxy_join), | |
347 | .offset_words = 12, | |
348 | .offset_bits = 8, | |
349 | .size_bits = 1 }, | |
350 | { RESERVED, | |
351 | .offset_words = 12, | |
352 | .offset_bits = 9, | |
353 | .size_bits = 23 }, | |
354 | }; | |
355 | ||
cbae32c5 HR |
356 | #define SERVICE_REC_FIELD(field) \ |
357 | .struct_offset_bytes = offsetof(struct ib_sa_service_rec, field), \ | |
358 | .struct_size_bytes = sizeof ((struct ib_sa_service_rec *) 0)->field, \ | |
359 | .field_name = "sa_service_rec:" #field | |
360 | ||
361 | static const struct ib_field service_rec_table[] = { | |
362 | { SERVICE_REC_FIELD(id), | |
363 | .offset_words = 0, | |
364 | .offset_bits = 0, | |
365 | .size_bits = 64 }, | |
366 | { SERVICE_REC_FIELD(gid), | |
367 | .offset_words = 2, | |
368 | .offset_bits = 0, | |
369 | .size_bits = 128 }, | |
370 | { SERVICE_REC_FIELD(pkey), | |
371 | .offset_words = 6, | |
372 | .offset_bits = 0, | |
373 | .size_bits = 16 }, | |
374 | { SERVICE_REC_FIELD(lease), | |
375 | .offset_words = 7, | |
376 | .offset_bits = 0, | |
377 | .size_bits = 32 }, | |
378 | { SERVICE_REC_FIELD(key), | |
379 | .offset_words = 8, | |
380 | .offset_bits = 0, | |
381 | .size_bits = 128 }, | |
382 | { SERVICE_REC_FIELD(name), | |
383 | .offset_words = 12, | |
384 | .offset_bits = 0, | |
385 | .size_bits = 64*8 }, | |
386 | { SERVICE_REC_FIELD(data8), | |
387 | .offset_words = 28, | |
388 | .offset_bits = 0, | |
389 | .size_bits = 16*8 }, | |
390 | { SERVICE_REC_FIELD(data16), | |
391 | .offset_words = 32, | |
392 | .offset_bits = 0, | |
393 | .size_bits = 8*16 }, | |
394 | { SERVICE_REC_FIELD(data32), | |
395 | .offset_words = 36, | |
396 | .offset_bits = 0, | |
397 | .size_bits = 4*32 }, | |
398 | { SERVICE_REC_FIELD(data64), | |
399 | .offset_words = 40, | |
400 | .offset_bits = 0, | |
401 | .size_bits = 2*64 }, | |
402 | }; | |
403 | ||
628e6f75 ES |
404 | #define CLASSPORTINFO_REC_FIELD(field) \ |
405 | .struct_offset_bytes = offsetof(struct ib_class_port_info, field), \ | |
406 | .struct_size_bytes = sizeof((struct ib_class_port_info *)0)->field, \ | |
407 | .field_name = "ib_class_port_info:" #field | |
408 | ||
409 | static const struct ib_field classport_info_rec_table[] = { | |
410 | { CLASSPORTINFO_REC_FIELD(base_version), | |
411 | .offset_words = 0, | |
412 | .offset_bits = 0, | |
413 | .size_bits = 8 }, | |
414 | { CLASSPORTINFO_REC_FIELD(class_version), | |
415 | .offset_words = 0, | |
416 | .offset_bits = 8, | |
417 | .size_bits = 8 }, | |
418 | { CLASSPORTINFO_REC_FIELD(capability_mask), | |
419 | .offset_words = 0, | |
420 | .offset_bits = 16, | |
421 | .size_bits = 16 }, | |
422 | { CLASSPORTINFO_REC_FIELD(cap_mask2_resp_time), | |
423 | .offset_words = 1, | |
424 | .offset_bits = 0, | |
425 | .size_bits = 32 }, | |
426 | { CLASSPORTINFO_REC_FIELD(redirect_gid), | |
427 | .offset_words = 2, | |
428 | .offset_bits = 0, | |
429 | .size_bits = 128 }, | |
430 | { CLASSPORTINFO_REC_FIELD(redirect_tcslfl), | |
431 | .offset_words = 6, | |
432 | .offset_bits = 0, | |
433 | .size_bits = 32 }, | |
434 | { CLASSPORTINFO_REC_FIELD(redirect_lid), | |
435 | .offset_words = 7, | |
436 | .offset_bits = 0, | |
437 | .size_bits = 16 }, | |
438 | { CLASSPORTINFO_REC_FIELD(redirect_pkey), | |
439 | .offset_words = 7, | |
440 | .offset_bits = 16, | |
441 | .size_bits = 16 }, | |
442 | ||
443 | { CLASSPORTINFO_REC_FIELD(redirect_qp), | |
444 | .offset_words = 8, | |
445 | .offset_bits = 0, | |
446 | .size_bits = 32 }, | |
447 | { CLASSPORTINFO_REC_FIELD(redirect_qkey), | |
448 | .offset_words = 9, | |
449 | .offset_bits = 0, | |
450 | .size_bits = 32 }, | |
451 | ||
452 | { CLASSPORTINFO_REC_FIELD(trap_gid), | |
453 | .offset_words = 10, | |
454 | .offset_bits = 0, | |
455 | .size_bits = 128 }, | |
456 | { CLASSPORTINFO_REC_FIELD(trap_tcslfl), | |
457 | .offset_words = 14, | |
458 | .offset_bits = 0, | |
459 | .size_bits = 32 }, | |
460 | ||
461 | { CLASSPORTINFO_REC_FIELD(trap_lid), | |
462 | .offset_words = 15, | |
463 | .offset_bits = 0, | |
464 | .size_bits = 16 }, | |
465 | { CLASSPORTINFO_REC_FIELD(trap_pkey), | |
466 | .offset_words = 15, | |
467 | .offset_bits = 16, | |
468 | .size_bits = 16 }, | |
469 | ||
470 | { CLASSPORTINFO_REC_FIELD(trap_hlqp), | |
471 | .offset_words = 16, | |
472 | .offset_bits = 0, | |
473 | .size_bits = 32 }, | |
474 | { CLASSPORTINFO_REC_FIELD(trap_qkey), | |
475 | .offset_words = 17, | |
476 | .offset_bits = 0, | |
477 | .size_bits = 32 }, | |
478 | }; | |
479 | ||
aeab97ed ES |
480 | #define GUIDINFO_REC_FIELD(field) \ |
481 | .struct_offset_bytes = offsetof(struct ib_sa_guidinfo_rec, field), \ | |
482 | .struct_size_bytes = sizeof((struct ib_sa_guidinfo_rec *) 0)->field, \ | |
483 | .field_name = "sa_guidinfo_rec:" #field | |
484 | ||
485 | static const struct ib_field guidinfo_rec_table[] = { | |
486 | { GUIDINFO_REC_FIELD(lid), | |
487 | .offset_words = 0, | |
488 | .offset_bits = 0, | |
489 | .size_bits = 16 }, | |
490 | { GUIDINFO_REC_FIELD(block_num), | |
491 | .offset_words = 0, | |
492 | .offset_bits = 16, | |
493 | .size_bits = 8 }, | |
494 | { GUIDINFO_REC_FIELD(res1), | |
495 | .offset_words = 0, | |
496 | .offset_bits = 24, | |
497 | .size_bits = 8 }, | |
498 | { GUIDINFO_REC_FIELD(res2), | |
499 | .offset_words = 1, | |
500 | .offset_bits = 0, | |
501 | .size_bits = 32 }, | |
502 | { GUIDINFO_REC_FIELD(guid_info_list), | |
503 | .offset_words = 2, | |
504 | .offset_bits = 0, | |
505 | .size_bits = 512 }, | |
506 | }; | |
507 | ||
2ca546b9 KW |
508 | static inline void ib_sa_disable_local_svc(struct ib_sa_query *query) |
509 | { | |
510 | query->flags &= ~IB_SA_ENABLE_LOCAL_SERVICE; | |
511 | } | |
512 | ||
513 | static inline int ib_sa_query_cancelled(struct ib_sa_query *query) | |
514 | { | |
515 | return (query->flags & IB_SA_CANCEL); | |
516 | } | |
517 | ||
518 | static void ib_nl_set_path_rec_attrs(struct sk_buff *skb, | |
519 | struct ib_sa_query *query) | |
520 | { | |
521 | struct ib_sa_path_rec *sa_rec = query->mad_buf->context[1]; | |
522 | struct ib_sa_mad *mad = query->mad_buf->mad; | |
523 | ib_sa_comp_mask comp_mask = mad->sa_hdr.comp_mask; | |
524 | u16 val16; | |
525 | u64 val64; | |
526 | struct rdma_ls_resolve_header *header; | |
527 | ||
528 | query->mad_buf->context[1] = NULL; | |
529 | ||
530 | /* Construct the family header first */ | |
531 | header = (struct rdma_ls_resolve_header *) | |
532 | skb_put(skb, NLMSG_ALIGN(sizeof(*header))); | |
533 | memcpy(header->device_name, query->port->agent->device->name, | |
534 | LS_DEVICE_NAME_MAX); | |
535 | header->port_num = query->port->port_num; | |
536 | ||
537 | if ((comp_mask & IB_SA_PATH_REC_REVERSIBLE) && | |
538 | sa_rec->reversible != 0) | |
539 | query->path_use = LS_RESOLVE_PATH_USE_GMP; | |
540 | else | |
541 | query->path_use = LS_RESOLVE_PATH_USE_UNIDIRECTIONAL; | |
542 | header->path_use = query->path_use; | |
543 | ||
544 | /* Now build the attributes */ | |
545 | if (comp_mask & IB_SA_PATH_REC_SERVICE_ID) { | |
546 | val64 = be64_to_cpu(sa_rec->service_id); | |
547 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_SERVICE_ID, | |
548 | sizeof(val64), &val64); | |
549 | } | |
550 | if (comp_mask & IB_SA_PATH_REC_DGID) | |
551 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_DGID, | |
552 | sizeof(sa_rec->dgid), &sa_rec->dgid); | |
553 | if (comp_mask & IB_SA_PATH_REC_SGID) | |
554 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_SGID, | |
555 | sizeof(sa_rec->sgid), &sa_rec->sgid); | |
556 | if (comp_mask & IB_SA_PATH_REC_TRAFFIC_CLASS) | |
557 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_TCLASS, | |
558 | sizeof(sa_rec->traffic_class), &sa_rec->traffic_class); | |
559 | ||
560 | if (comp_mask & IB_SA_PATH_REC_PKEY) { | |
561 | val16 = be16_to_cpu(sa_rec->pkey); | |
562 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_PKEY, | |
563 | sizeof(val16), &val16); | |
564 | } | |
565 | if (comp_mask & IB_SA_PATH_REC_QOS_CLASS) { | |
566 | val16 = be16_to_cpu(sa_rec->qos_class); | |
567 | nla_put(skb, RDMA_NLA_F_MANDATORY | LS_NLA_TYPE_QOS_CLASS, | |
568 | sizeof(val16), &val16); | |
569 | } | |
570 | } | |
571 | ||
572 | static int ib_nl_get_path_rec_attrs_len(ib_sa_comp_mask comp_mask) | |
573 | { | |
574 | int len = 0; | |
575 | ||
576 | if (comp_mask & IB_SA_PATH_REC_SERVICE_ID) | |
577 | len += nla_total_size(sizeof(u64)); | |
578 | if (comp_mask & IB_SA_PATH_REC_DGID) | |
579 | len += nla_total_size(sizeof(struct rdma_nla_ls_gid)); | |
580 | if (comp_mask & IB_SA_PATH_REC_SGID) | |
581 | len += nla_total_size(sizeof(struct rdma_nla_ls_gid)); | |
582 | if (comp_mask & IB_SA_PATH_REC_TRAFFIC_CLASS) | |
583 | len += nla_total_size(sizeof(u8)); | |
584 | if (comp_mask & IB_SA_PATH_REC_PKEY) | |
585 | len += nla_total_size(sizeof(u16)); | |
586 | if (comp_mask & IB_SA_PATH_REC_QOS_CLASS) | |
587 | len += nla_total_size(sizeof(u16)); | |
588 | ||
589 | /* | |
590 | * Make sure that at least some of the required comp_mask bits are | |
591 | * set. | |
592 | */ | |
593 | if (WARN_ON(len == 0)) | |
594 | return len; | |
595 | ||
596 | /* Add the family header */ | |
597 | len += NLMSG_ALIGN(sizeof(struct rdma_ls_resolve_header)); | |
598 | ||
599 | return len; | |
600 | } | |
601 | ||
3ebd2fd0 | 602 | static int ib_nl_send_msg(struct ib_sa_query *query, gfp_t gfp_mask) |
2ca546b9 KW |
603 | { |
604 | struct sk_buff *skb = NULL; | |
605 | struct nlmsghdr *nlh; | |
606 | void *data; | |
607 | int ret = 0; | |
608 | struct ib_sa_mad *mad; | |
609 | int len; | |
610 | ||
611 | mad = query->mad_buf->mad; | |
612 | len = ib_nl_get_path_rec_attrs_len(mad->sa_hdr.comp_mask); | |
613 | if (len <= 0) | |
614 | return -EMSGSIZE; | |
615 | ||
3ebd2fd0 | 616 | skb = nlmsg_new(len, gfp_mask); |
2ca546b9 KW |
617 | if (!skb) |
618 | return -ENOMEM; | |
619 | ||
620 | /* Put nlmsg header only for now */ | |
621 | data = ibnl_put_msg(skb, &nlh, query->seq, 0, RDMA_NL_LS, | |
ba13b5f8 | 622 | RDMA_NL_LS_OP_RESOLVE, NLM_F_REQUEST); |
2ca546b9 | 623 | if (!data) { |
0f377d86 | 624 | nlmsg_free(skb); |
2ca546b9 KW |
625 | return -EMSGSIZE; |
626 | } | |
627 | ||
628 | /* Add attributes */ | |
629 | ib_nl_set_path_rec_attrs(skb, query); | |
630 | ||
631 | /* Repair the nlmsg header length */ | |
632 | nlmsg_end(skb, nlh); | |
633 | ||
3ebd2fd0 | 634 | ret = ibnl_multicast(skb, nlh, RDMA_NL_GROUP_LS, gfp_mask); |
2ca546b9 KW |
635 | if (!ret) |
636 | ret = len; | |
637 | else | |
638 | ret = 0; | |
639 | ||
640 | return ret; | |
641 | } | |
642 | ||
3ebd2fd0 | 643 | static int ib_nl_make_request(struct ib_sa_query *query, gfp_t gfp_mask) |
2ca546b9 KW |
644 | { |
645 | unsigned long flags; | |
646 | unsigned long delay; | |
647 | int ret; | |
648 | ||
649 | INIT_LIST_HEAD(&query->list); | |
650 | query->seq = (u32)atomic_inc_return(&ib_nl_sa_request_seq); | |
651 | ||
3ebd2fd0 | 652 | /* Put the request on the list first.*/ |
2ca546b9 | 653 | spin_lock_irqsave(&ib_nl_request_lock, flags); |
2ca546b9 KW |
654 | delay = msecs_to_jiffies(sa_local_svc_timeout_ms); |
655 | query->timeout = delay + jiffies; | |
656 | list_add_tail(&query->list, &ib_nl_request_list); | |
657 | /* Start the timeout if this is the only request */ | |
658 | if (ib_nl_request_list.next == &query->list) | |
659 | queue_delayed_work(ib_nl_wq, &ib_nl_timed_work, delay); | |
2ca546b9 KW |
660 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); |
661 | ||
3ebd2fd0 KW |
662 | ret = ib_nl_send_msg(query, gfp_mask); |
663 | if (ret <= 0) { | |
664 | ret = -EIO; | |
665 | /* Remove the request */ | |
666 | spin_lock_irqsave(&ib_nl_request_lock, flags); | |
667 | list_del(&query->list); | |
668 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); | |
669 | } else { | |
670 | ret = 0; | |
671 | } | |
672 | ||
2ca546b9 KW |
673 | return ret; |
674 | } | |
675 | ||
676 | static int ib_nl_cancel_request(struct ib_sa_query *query) | |
677 | { | |
678 | unsigned long flags; | |
679 | struct ib_sa_query *wait_query; | |
680 | int found = 0; | |
681 | ||
682 | spin_lock_irqsave(&ib_nl_request_lock, flags); | |
683 | list_for_each_entry(wait_query, &ib_nl_request_list, list) { | |
684 | /* Let the timeout to take care of the callback */ | |
685 | if (query == wait_query) { | |
686 | query->flags |= IB_SA_CANCEL; | |
687 | query->timeout = jiffies; | |
688 | list_move(&query->list, &ib_nl_request_list); | |
689 | found = 1; | |
690 | mod_delayed_work(ib_nl_wq, &ib_nl_timed_work, 1); | |
691 | break; | |
692 | } | |
693 | } | |
694 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); | |
695 | ||
696 | return found; | |
697 | } | |
698 | ||
699 | static void send_handler(struct ib_mad_agent *agent, | |
700 | struct ib_mad_send_wc *mad_send_wc); | |
701 | ||
702 | static void ib_nl_process_good_resolve_rsp(struct ib_sa_query *query, | |
703 | const struct nlmsghdr *nlh) | |
704 | { | |
705 | struct ib_mad_send_wc mad_send_wc; | |
706 | struct ib_sa_mad *mad = NULL; | |
707 | const struct nlattr *head, *curr; | |
708 | struct ib_path_rec_data *rec; | |
709 | int len, rem; | |
710 | u32 mask = 0; | |
711 | int status = -EIO; | |
712 | ||
713 | if (query->callback) { | |
714 | head = (const struct nlattr *) nlmsg_data(nlh); | |
715 | len = nlmsg_len(nlh); | |
716 | switch (query->path_use) { | |
717 | case LS_RESOLVE_PATH_USE_UNIDIRECTIONAL: | |
718 | mask = IB_PATH_PRIMARY | IB_PATH_OUTBOUND; | |
719 | break; | |
720 | ||
721 | case LS_RESOLVE_PATH_USE_ALL: | |
722 | case LS_RESOLVE_PATH_USE_GMP: | |
723 | default: | |
724 | mask = IB_PATH_PRIMARY | IB_PATH_GMP | | |
725 | IB_PATH_BIDIRECTIONAL; | |
726 | break; | |
727 | } | |
728 | nla_for_each_attr(curr, head, len, rem) { | |
729 | if (curr->nla_type == LS_NLA_TYPE_PATH_RECORD) { | |
730 | rec = nla_data(curr); | |
731 | /* | |
732 | * Get the first one. In the future, we may | |
733 | * need to get up to 6 pathrecords. | |
734 | */ | |
735 | if ((rec->flags & mask) == mask) { | |
736 | mad = query->mad_buf->mad; | |
737 | mad->mad_hdr.method |= | |
738 | IB_MGMT_METHOD_RESP; | |
739 | memcpy(mad->data, rec->path_rec, | |
740 | sizeof(rec->path_rec)); | |
741 | status = 0; | |
742 | break; | |
743 | } | |
744 | } | |
745 | } | |
746 | query->callback(query, status, mad); | |
747 | } | |
748 | ||
749 | mad_send_wc.send_buf = query->mad_buf; | |
750 | mad_send_wc.status = IB_WC_SUCCESS; | |
751 | send_handler(query->mad_buf->mad_agent, &mad_send_wc); | |
752 | } | |
753 | ||
754 | static void ib_nl_request_timeout(struct work_struct *work) | |
755 | { | |
756 | unsigned long flags; | |
757 | struct ib_sa_query *query; | |
758 | unsigned long delay; | |
759 | struct ib_mad_send_wc mad_send_wc; | |
760 | int ret; | |
761 | ||
762 | spin_lock_irqsave(&ib_nl_request_lock, flags); | |
763 | while (!list_empty(&ib_nl_request_list)) { | |
764 | query = list_entry(ib_nl_request_list.next, | |
765 | struct ib_sa_query, list); | |
766 | ||
767 | if (time_after(query->timeout, jiffies)) { | |
768 | delay = query->timeout - jiffies; | |
769 | if ((long)delay <= 0) | |
770 | delay = 1; | |
771 | queue_delayed_work(ib_nl_wq, &ib_nl_timed_work, delay); | |
772 | break; | |
773 | } | |
774 | ||
775 | list_del(&query->list); | |
776 | ib_sa_disable_local_svc(query); | |
777 | /* Hold the lock to protect against query cancellation */ | |
778 | if (ib_sa_query_cancelled(query)) | |
779 | ret = -1; | |
780 | else | |
781 | ret = ib_post_send_mad(query->mad_buf, NULL); | |
782 | if (ret) { | |
783 | mad_send_wc.send_buf = query->mad_buf; | |
784 | mad_send_wc.status = IB_WC_WR_FLUSH_ERR; | |
785 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); | |
786 | send_handler(query->port->agent, &mad_send_wc); | |
787 | spin_lock_irqsave(&ib_nl_request_lock, flags); | |
788 | } | |
789 | } | |
790 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); | |
791 | } | |
792 | ||
735c631a MB |
793 | int ib_nl_handle_set_timeout(struct sk_buff *skb, |
794 | struct netlink_callback *cb) | |
2ca546b9 KW |
795 | { |
796 | const struct nlmsghdr *nlh = (struct nlmsghdr *)cb->nlh; | |
797 | int timeout, delta, abs_delta; | |
798 | const struct nlattr *attr; | |
799 | unsigned long flags; | |
800 | struct ib_sa_query *query; | |
801 | long delay = 0; | |
802 | struct nlattr *tb[LS_NLA_TYPE_MAX]; | |
803 | int ret; | |
804 | ||
2deeb477 KW |
805 | if (!(nlh->nlmsg_flags & NLM_F_REQUEST) || |
806 | !(NETLINK_CB(skb).sk) || | |
807 | !netlink_capable(skb, CAP_NET_ADMIN)) | |
2ca546b9 KW |
808 | return -EPERM; |
809 | ||
810 | ret = nla_parse(tb, LS_NLA_TYPE_MAX - 1, nlmsg_data(nlh), | |
fceb6435 | 811 | nlmsg_len(nlh), ib_nl_policy, NULL); |
2ca546b9 KW |
812 | attr = (const struct nlattr *)tb[LS_NLA_TYPE_TIMEOUT]; |
813 | if (ret || !attr) | |
814 | goto settimeout_out; | |
815 | ||
816 | timeout = *(int *) nla_data(attr); | |
817 | if (timeout < IB_SA_LOCAL_SVC_TIMEOUT_MIN) | |
818 | timeout = IB_SA_LOCAL_SVC_TIMEOUT_MIN; | |
819 | if (timeout > IB_SA_LOCAL_SVC_TIMEOUT_MAX) | |
820 | timeout = IB_SA_LOCAL_SVC_TIMEOUT_MAX; | |
821 | ||
822 | delta = timeout - sa_local_svc_timeout_ms; | |
823 | if (delta < 0) | |
824 | abs_delta = -delta; | |
825 | else | |
826 | abs_delta = delta; | |
827 | ||
828 | if (delta != 0) { | |
829 | spin_lock_irqsave(&ib_nl_request_lock, flags); | |
830 | sa_local_svc_timeout_ms = timeout; | |
831 | list_for_each_entry(query, &ib_nl_request_list, list) { | |
832 | if (delta < 0 && abs_delta > query->timeout) | |
833 | query->timeout = 0; | |
834 | else | |
835 | query->timeout += delta; | |
836 | ||
837 | /* Get the new delay from the first entry */ | |
838 | if (!delay) { | |
839 | delay = query->timeout - jiffies; | |
840 | if (delay <= 0) | |
841 | delay = 1; | |
842 | } | |
843 | } | |
844 | if (delay) | |
845 | mod_delayed_work(ib_nl_wq, &ib_nl_timed_work, | |
846 | (unsigned long)delay); | |
847 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); | |
848 | } | |
849 | ||
850 | settimeout_out: | |
851 | return skb->len; | |
852 | } | |
853 | ||
854 | static inline int ib_nl_is_good_resolve_resp(const struct nlmsghdr *nlh) | |
855 | { | |
856 | struct nlattr *tb[LS_NLA_TYPE_MAX]; | |
857 | int ret; | |
858 | ||
859 | if (nlh->nlmsg_flags & RDMA_NL_LS_F_ERR) | |
860 | return 0; | |
861 | ||
862 | ret = nla_parse(tb, LS_NLA_TYPE_MAX - 1, nlmsg_data(nlh), | |
fceb6435 | 863 | nlmsg_len(nlh), ib_nl_policy, NULL); |
2ca546b9 KW |
864 | if (ret) |
865 | return 0; | |
866 | ||
867 | return 1; | |
868 | } | |
869 | ||
735c631a MB |
870 | int ib_nl_handle_resolve_resp(struct sk_buff *skb, |
871 | struct netlink_callback *cb) | |
2ca546b9 KW |
872 | { |
873 | const struct nlmsghdr *nlh = (struct nlmsghdr *)cb->nlh; | |
874 | unsigned long flags; | |
875 | struct ib_sa_query *query; | |
876 | struct ib_mad_send_buf *send_buf; | |
877 | struct ib_mad_send_wc mad_send_wc; | |
878 | int found = 0; | |
879 | int ret; | |
880 | ||
2deeb477 KW |
881 | if ((nlh->nlmsg_flags & NLM_F_REQUEST) || |
882 | !(NETLINK_CB(skb).sk) || | |
883 | !netlink_capable(skb, CAP_NET_ADMIN)) | |
2ca546b9 KW |
884 | return -EPERM; |
885 | ||
886 | spin_lock_irqsave(&ib_nl_request_lock, flags); | |
887 | list_for_each_entry(query, &ib_nl_request_list, list) { | |
888 | /* | |
889 | * If the query is cancelled, let the timeout routine | |
890 | * take care of it. | |
891 | */ | |
892 | if (nlh->nlmsg_seq == query->seq) { | |
893 | found = !ib_sa_query_cancelled(query); | |
894 | if (found) | |
895 | list_del(&query->list); | |
896 | break; | |
897 | } | |
898 | } | |
899 | ||
900 | if (!found) { | |
901 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); | |
902 | goto resp_out; | |
903 | } | |
904 | ||
905 | send_buf = query->mad_buf; | |
906 | ||
907 | if (!ib_nl_is_good_resolve_resp(nlh)) { | |
908 | /* if the result is a failure, send out the packet via IB */ | |
909 | ib_sa_disable_local_svc(query); | |
910 | ret = ib_post_send_mad(query->mad_buf, NULL); | |
911 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); | |
912 | if (ret) { | |
913 | mad_send_wc.send_buf = send_buf; | |
914 | mad_send_wc.status = IB_WC_GENERAL_ERR; | |
915 | send_handler(query->port->agent, &mad_send_wc); | |
916 | } | |
917 | } else { | |
918 | spin_unlock_irqrestore(&ib_nl_request_lock, flags); | |
919 | ib_nl_process_good_resolve_rsp(query, nlh); | |
920 | } | |
921 | ||
922 | resp_out: | |
923 | return skb->len; | |
924 | } | |
925 | ||
1da177e4 LT |
926 | static void free_sm_ah(struct kref *kref) |
927 | { | |
928 | struct ib_sa_sm_ah *sm_ah = container_of(kref, struct ib_sa_sm_ah, ref); | |
929 | ||
930 | ib_destroy_ah(sm_ah->ah); | |
931 | kfree(sm_ah); | |
932 | } | |
933 | ||
c4028958 | 934 | static void update_sm_ah(struct work_struct *work) |
1da177e4 | 935 | { |
c4028958 DH |
936 | struct ib_sa_port *port = |
937 | container_of(work, struct ib_sa_port, update_task); | |
164ba089 | 938 | struct ib_sa_sm_ah *new_ah; |
1da177e4 LT |
939 | struct ib_port_attr port_attr; |
940 | struct ib_ah_attr ah_attr; | |
941 | ||
942 | if (ib_query_port(port->agent->device, port->port_num, &port_attr)) { | |
aba25a3e | 943 | pr_warn("Couldn't query port\n"); |
1da177e4 LT |
944 | return; |
945 | } | |
946 | ||
947 | new_ah = kmalloc(sizeof *new_ah, GFP_KERNEL); | |
948 | if (!new_ah) { | |
1da177e4 LT |
949 | return; |
950 | } | |
951 | ||
952 | kref_init(&new_ah->ref); | |
d0e7bb14 | 953 | new_ah->src_path_mask = (1 << port_attr.lmc) - 1; |
1da177e4 | 954 | |
2aec5c60 SH |
955 | new_ah->pkey_index = 0; |
956 | if (ib_find_pkey(port->agent->device, port->port_num, | |
53998910 | 957 | IB_DEFAULT_PKEY_FULL, &new_ah->pkey_index)) |
aba25a3e | 958 | pr_err("Couldn't find index for default PKey\n"); |
2aec5c60 | 959 | |
1da177e4 LT |
960 | memset(&ah_attr, 0, sizeof ah_attr); |
961 | ah_attr.dlid = port_attr.sm_lid; | |
962 | ah_attr.sl = port_attr.sm_sl; | |
963 | ah_attr.port_num = port->port_num; | |
a0c1b2a3 EC |
964 | if (port_attr.grh_required) { |
965 | ah_attr.ah_flags = IB_AH_GRH; | |
966 | ah_attr.grh.dgid.global.subnet_prefix = cpu_to_be64(port_attr.subnet_prefix); | |
967 | ah_attr.grh.dgid.global.interface_id = cpu_to_be64(IB_SA_WELL_KNOWN_GUID); | |
968 | } | |
1da177e4 LT |
969 | |
970 | new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr); | |
971 | if (IS_ERR(new_ah->ah)) { | |
aba25a3e | 972 | pr_warn("Couldn't create new SM AH\n"); |
1da177e4 LT |
973 | kfree(new_ah); |
974 | return; | |
975 | } | |
976 | ||
977 | spin_lock_irq(&port->ah_lock); | |
6b708b3d JM |
978 | if (port->sm_ah) |
979 | kref_put(&port->sm_ah->ref, free_sm_ah); | |
1da177e4 LT |
980 | port->sm_ah = new_ah; |
981 | spin_unlock_irq(&port->ah_lock); | |
982 | ||
1da177e4 LT |
983 | } |
984 | ||
985 | static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event) | |
986 | { | |
987 | if (event->event == IB_EVENT_PORT_ERR || | |
988 | event->event == IB_EVENT_PORT_ACTIVE || | |
989 | event->event == IB_EVENT_LID_CHANGE || | |
990 | event->event == IB_EVENT_PKEY_CHANGE || | |
acaea9ee JM |
991 | event->event == IB_EVENT_SM_CHANGE || |
992 | event->event == IB_EVENT_CLIENT_REREGISTER) { | |
164ba089 MS |
993 | unsigned long flags; |
994 | struct ib_sa_device *sa_dev = | |
995 | container_of(handler, typeof(*sa_dev), event_handler); | |
996 | struct ib_sa_port *port = | |
997 | &sa_dev->port[event->element.port_num - sa_dev->start_port]; | |
998 | ||
9247a8eb | 999 | if (!rdma_cap_ib_sa(handler->device, port->port_num)) |
fac70d51 EC |
1000 | return; |
1001 | ||
164ba089 MS |
1002 | spin_lock_irqsave(&port->ah_lock, flags); |
1003 | if (port->sm_ah) | |
1004 | kref_put(&port->sm_ah->ref, free_sm_ah); | |
1005 | port->sm_ah = NULL; | |
1006 | spin_unlock_irqrestore(&port->ah_lock, flags); | |
1da177e4 | 1007 | |
3d3fd742 AV |
1008 | if (event->event == IB_EVENT_SM_CHANGE || |
1009 | event->event == IB_EVENT_CLIENT_REREGISTER || | |
1010 | event->event == IB_EVENT_LID_CHANGE) { | |
1011 | spin_lock_irqsave(&port->classport_lock, flags); | |
1012 | port->classport_info.valid = false; | |
1013 | spin_unlock_irqrestore(&port->classport_lock, flags); | |
1014 | } | |
f0626710 | 1015 | queue_work(ib_wq, &sa_dev->port[event->element.port_num - |
1da177e4 LT |
1016 | sa_dev->start_port].update_task); |
1017 | } | |
1018 | } | |
1019 | ||
c1a0b23b MT |
1020 | void ib_sa_register_client(struct ib_sa_client *client) |
1021 | { | |
1022 | atomic_set(&client->users, 1); | |
1023 | init_completion(&client->comp); | |
1024 | } | |
1025 | EXPORT_SYMBOL(ib_sa_register_client); | |
1026 | ||
c1a0b23b MT |
1027 | void ib_sa_unregister_client(struct ib_sa_client *client) |
1028 | { | |
1029 | ib_sa_client_put(client); | |
1030 | wait_for_completion(&client->comp); | |
1031 | } | |
1032 | EXPORT_SYMBOL(ib_sa_unregister_client); | |
1033 | ||
1da177e4 LT |
1034 | /** |
1035 | * ib_sa_cancel_query - try to cancel an SA query | |
1036 | * @id:ID of query to cancel | |
1037 | * @query:query pointer to cancel | |
1038 | * | |
1039 | * Try to cancel an SA query. If the id and query don't match up or | |
1040 | * the query has already completed, nothing is done. Otherwise the | |
1041 | * query is canceled and will complete with a status of -EINTR. | |
1042 | */ | |
1043 | void ib_sa_cancel_query(int id, struct ib_sa_query *query) | |
1044 | { | |
1045 | unsigned long flags; | |
1046 | struct ib_mad_agent *agent; | |
34816ad9 | 1047 | struct ib_mad_send_buf *mad_buf; |
1da177e4 LT |
1048 | |
1049 | spin_lock_irqsave(&idr_lock, flags); | |
1050 | if (idr_find(&query_idr, id) != query) { | |
1051 | spin_unlock_irqrestore(&idr_lock, flags); | |
1052 | return; | |
1053 | } | |
1054 | agent = query->port->agent; | |
34816ad9 | 1055 | mad_buf = query->mad_buf; |
1da177e4 LT |
1056 | spin_unlock_irqrestore(&idr_lock, flags); |
1057 | ||
2ca546b9 KW |
1058 | /* |
1059 | * If the query is still on the netlink request list, schedule | |
1060 | * it to be cancelled by the timeout routine. Otherwise, it has been | |
1061 | * sent to the MAD layer and has to be cancelled from there. | |
1062 | */ | |
1063 | if (!ib_nl_cancel_request(query)) | |
1064 | ib_cancel_mad(agent, mad_buf); | |
1da177e4 LT |
1065 | } |
1066 | EXPORT_SYMBOL(ib_sa_cancel_query); | |
1067 | ||
d0e7bb14 SH |
1068 | static u8 get_src_path_mask(struct ib_device *device, u8 port_num) |
1069 | { | |
1070 | struct ib_sa_device *sa_dev; | |
1071 | struct ib_sa_port *port; | |
1072 | unsigned long flags; | |
1073 | u8 src_path_mask; | |
1074 | ||
1075 | sa_dev = ib_get_client_data(device, &sa_client); | |
1076 | if (!sa_dev) | |
1077 | return 0x7f; | |
1078 | ||
1079 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
1080 | spin_lock_irqsave(&port->ah_lock, flags); | |
1081 | src_path_mask = port->sm_ah ? port->sm_ah->src_path_mask : 0x7f; | |
1082 | spin_unlock_irqrestore(&port->ah_lock, flags); | |
1083 | ||
1084 | return src_path_mask; | |
1085 | } | |
1086 | ||
6d969a47 SH |
1087 | int ib_init_ah_from_path(struct ib_device *device, u8 port_num, |
1088 | struct ib_sa_path_rec *rec, struct ib_ah_attr *ah_attr) | |
1089 | { | |
1090 | int ret; | |
1091 | u16 gid_index; | |
20029832 MB |
1092 | int use_roce; |
1093 | struct net_device *ndev = NULL; | |
6d969a47 SH |
1094 | |
1095 | memset(ah_attr, 0, sizeof *ah_attr); | |
1096 | ah_attr->dlid = be16_to_cpu(rec->dlid); | |
1097 | ah_attr->sl = rec->sl; | |
d0e7bb14 SH |
1098 | ah_attr->src_path_bits = be16_to_cpu(rec->slid) & |
1099 | get_src_path_mask(device, port_num); | |
6d969a47 | 1100 | ah_attr->port_num = port_num; |
7084f842 | 1101 | ah_attr->static_rate = rec->rate; |
6d969a47 | 1102 | |
20029832 MB |
1103 | use_roce = rdma_cap_eth_ah(device, port_num); |
1104 | ||
1105 | if (use_roce) { | |
1106 | struct net_device *idev; | |
1107 | struct net_device *resolved_dev; | |
1108 | struct rdma_dev_addr dev_addr = {.bound_dev_if = rec->ifindex, | |
1109 | .net = rec->net ? rec->net : | |
1110 | &init_net}; | |
1111 | union { | |
1112 | struct sockaddr _sockaddr; | |
1113 | struct sockaddr_in _sockaddr_in; | |
1114 | struct sockaddr_in6 _sockaddr_in6; | |
1115 | } sgid_addr, dgid_addr; | |
1116 | ||
1117 | if (!device->get_netdev) | |
1118 | return -EOPNOTSUPP; | |
1119 | ||
1120 | rdma_gid2ip(&sgid_addr._sockaddr, &rec->sgid); | |
1121 | rdma_gid2ip(&dgid_addr._sockaddr, &rec->dgid); | |
1122 | ||
1123 | /* validate the route */ | |
1124 | ret = rdma_resolve_ip_route(&sgid_addr._sockaddr, | |
1125 | &dgid_addr._sockaddr, &dev_addr); | |
1126 | if (ret) | |
1127 | return ret; | |
3c86aa70 | 1128 | |
20029832 MB |
1129 | if ((dev_addr.network == RDMA_NETWORK_IPV4 || |
1130 | dev_addr.network == RDMA_NETWORK_IPV6) && | |
1131 | rec->gid_type != IB_GID_TYPE_ROCE_UDP_ENCAP) | |
1132 | return -EINVAL; | |
1133 | ||
1134 | idev = device->get_netdev(device, port_num); | |
1135 | if (!idev) | |
1136 | return -ENODEV; | |
1137 | ||
1138 | resolved_dev = dev_get_by_index(dev_addr.net, | |
1139 | dev_addr.bound_dev_if); | |
1140 | if (resolved_dev->flags & IFF_LOOPBACK) { | |
1141 | dev_put(resolved_dev); | |
1142 | resolved_dev = idev; | |
1143 | dev_hold(resolved_dev); | |
1144 | } | |
1145 | ndev = ib_get_ndev_from_path(rec); | |
1146 | rcu_read_lock(); | |
1147 | if ((ndev && ndev != resolved_dev) || | |
1148 | (resolved_dev != idev && | |
1149 | !rdma_is_upper_dev_rcu(idev, resolved_dev))) | |
1150 | ret = -EHOSTUNREACH; | |
1151 | rcu_read_unlock(); | |
1152 | dev_put(idev); | |
1153 | dev_put(resolved_dev); | |
1154 | if (ret) { | |
1155 | if (ndev) | |
1156 | dev_put(ndev); | |
1157 | return ret; | |
1158 | } | |
1159 | } | |
ba36e37f | 1160 | |
11d8d645 | 1161 | if (rec->hop_limit > 0 || use_roce) { |
6d969a47 SH |
1162 | ah_attr->ah_flags = IB_AH_GRH; |
1163 | ah_attr->grh.dgid = rec->dgid; | |
1164 | ||
20029832 MB |
1165 | ret = ib_find_cached_gid_by_port(device, &rec->sgid, |
1166 | rec->gid_type, port_num, ndev, | |
1167 | &gid_index); | |
ba36e37f MB |
1168 | if (ret) { |
1169 | if (ndev) | |
1170 | dev_put(ndev); | |
6d969a47 | 1171 | return ret; |
ba36e37f | 1172 | } |
6d969a47 | 1173 | |
ca222c6b SH |
1174 | ah_attr->grh.sgid_index = gid_index; |
1175 | ah_attr->grh.flow_label = be32_to_cpu(rec->flow_label); | |
1176 | ah_attr->grh.hop_limit = rec->hop_limit; | |
6d969a47 | 1177 | ah_attr->grh.traffic_class = rec->traffic_class; |
ba36e37f MB |
1178 | if (ndev) |
1179 | dev_put(ndev); | |
6d969a47 | 1180 | } |
20029832 MB |
1181 | |
1182 | if (use_roce) | |
dd5f03be | 1183 | memcpy(ah_attr->dmac, rec->dmac, ETH_ALEN); |
20029832 | 1184 | |
6d969a47 SH |
1185 | return 0; |
1186 | } | |
1187 | EXPORT_SYMBOL(ib_init_ah_from_path); | |
1188 | ||
2aec5c60 SH |
1189 | static int alloc_mad(struct ib_sa_query *query, gfp_t gfp_mask) |
1190 | { | |
1191 | unsigned long flags; | |
1192 | ||
1193 | spin_lock_irqsave(&query->port->ah_lock, flags); | |
164ba089 MS |
1194 | if (!query->port->sm_ah) { |
1195 | spin_unlock_irqrestore(&query->port->ah_lock, flags); | |
1196 | return -EAGAIN; | |
1197 | } | |
2aec5c60 SH |
1198 | kref_get(&query->port->sm_ah->ref); |
1199 | query->sm_ah = query->port->sm_ah; | |
1200 | spin_unlock_irqrestore(&query->port->ah_lock, flags); | |
1201 | ||
1202 | query->mad_buf = ib_create_send_mad(query->port->agent, 1, | |
1203 | query->sm_ah->pkey_index, | |
1204 | 0, IB_MGMT_SA_HDR, IB_MGMT_SA_DATA, | |
da2dfaa3 IW |
1205 | gfp_mask, |
1206 | IB_MGMT_BASE_VERSION); | |
3c10c7c9 | 1207 | if (IS_ERR(query->mad_buf)) { |
2aec5c60 SH |
1208 | kref_put(&query->sm_ah->ref, free_sm_ah); |
1209 | return -ENOMEM; | |
1210 | } | |
1211 | ||
1212 | query->mad_buf->ah = query->sm_ah->ah; | |
1213 | ||
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | static void free_mad(struct ib_sa_query *query) | |
1218 | { | |
1219 | ib_free_send_mad(query->mad_buf); | |
1220 | kref_put(&query->sm_ah->ref, free_sm_ah); | |
1221 | } | |
1222 | ||
1da177e4 LT |
1223 | static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent) |
1224 | { | |
1225 | unsigned long flags; | |
1226 | ||
1227 | memset(mad, 0, sizeof *mad); | |
1228 | ||
1229 | mad->mad_hdr.base_version = IB_MGMT_BASE_VERSION; | |
1230 | mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM; | |
1231 | mad->mad_hdr.class_version = IB_SA_CLASS_VERSION; | |
1232 | ||
1233 | spin_lock_irqsave(&tid_lock, flags); | |
1234 | mad->mad_hdr.tid = | |
1235 | cpu_to_be64(((u64) agent->hi_tid) << 32 | tid++); | |
1236 | spin_unlock_irqrestore(&tid_lock, flags); | |
1237 | } | |
1238 | ||
e322fedf | 1239 | static int send_mad(struct ib_sa_query *query, int timeout_ms, gfp_t gfp_mask) |
1da177e4 | 1240 | { |
d0164adc | 1241 | bool preload = gfpflags_allow_blocking(gfp_mask); |
1da177e4 | 1242 | unsigned long flags; |
34816ad9 | 1243 | int ret, id; |
1da177e4 | 1244 | |
3b069c5d TH |
1245 | if (preload) |
1246 | idr_preload(gfp_mask); | |
1da177e4 | 1247 | spin_lock_irqsave(&idr_lock, flags); |
3b069c5d TH |
1248 | |
1249 | id = idr_alloc(&query_idr, query, 0, 0, GFP_NOWAIT); | |
1250 | ||
1da177e4 | 1251 | spin_unlock_irqrestore(&idr_lock, flags); |
3b069c5d TH |
1252 | if (preload) |
1253 | idr_preload_end(); | |
1254 | if (id < 0) | |
1255 | return id; | |
1da177e4 | 1256 | |
34816ad9 SH |
1257 | query->mad_buf->timeout_ms = timeout_ms; |
1258 | query->mad_buf->context[0] = query; | |
1259 | query->id = id; | |
1da177e4 | 1260 | |
2ca546b9 KW |
1261 | if (query->flags & IB_SA_ENABLE_LOCAL_SERVICE) { |
1262 | if (!ibnl_chk_listeners(RDMA_NL_GROUP_LS)) { | |
3ebd2fd0 | 1263 | if (!ib_nl_make_request(query, gfp_mask)) |
2ca546b9 KW |
1264 | return id; |
1265 | } | |
1266 | ib_sa_disable_local_svc(query); | |
1267 | } | |
1268 | ||
34816ad9 | 1269 | ret = ib_post_send_mad(query->mad_buf, NULL); |
1da177e4 | 1270 | if (ret) { |
1da177e4 | 1271 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 1272 | idr_remove(&query_idr, id); |
1da177e4 LT |
1273 | spin_unlock_irqrestore(&idr_lock, flags); |
1274 | } | |
1275 | ||
dae4c1d2 RD |
1276 | /* |
1277 | * It's not safe to dereference query any more, because the | |
1278 | * send may already have completed and freed the query in | |
34816ad9 | 1279 | * another context. |
dae4c1d2 | 1280 | */ |
34816ad9 | 1281 | return ret ? ret : id; |
1da177e4 LT |
1282 | } |
1283 | ||
a7ca1f00 SH |
1284 | void ib_sa_unpack_path(void *attribute, struct ib_sa_path_rec *rec) |
1285 | { | |
1286 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), attribute, rec); | |
1287 | } | |
1288 | EXPORT_SYMBOL(ib_sa_unpack_path); | |
1289 | ||
2e08b587 SH |
1290 | void ib_sa_pack_path(struct ib_sa_path_rec *rec, void *attribute) |
1291 | { | |
1292 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, attribute); | |
1293 | } | |
1294 | EXPORT_SYMBOL(ib_sa_pack_path); | |
1295 | ||
1da177e4 LT |
1296 | static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query, |
1297 | int status, | |
1298 | struct ib_sa_mad *mad) | |
1299 | { | |
1300 | struct ib_sa_path_query *query = | |
1301 | container_of(sa_query, struct ib_sa_path_query, sa_query); | |
1302 | ||
1303 | if (mad) { | |
1304 | struct ib_sa_path_rec rec; | |
1305 | ||
1306 | ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), | |
1307 | mad->data, &rec); | |
ba36e37f MB |
1308 | rec.net = NULL; |
1309 | rec.ifindex = 0; | |
b39ffa1d | 1310 | rec.gid_type = IB_GID_TYPE_IB; |
db9314cd | 1311 | eth_zero_addr(rec.dmac); |
1da177e4 LT |
1312 | query->callback(status, &rec, query->context); |
1313 | } else | |
1314 | query->callback(status, NULL, query->context); | |
1315 | } | |
1316 | ||
1317 | static void ib_sa_path_rec_release(struct ib_sa_query *sa_query) | |
1318 | { | |
1da177e4 LT |
1319 | kfree(container_of(sa_query, struct ib_sa_path_query, sa_query)); |
1320 | } | |
1321 | ||
1322 | /** | |
1323 | * ib_sa_path_rec_get - Start a Path get query | |
c1a0b23b | 1324 | * @client:SA client |
1da177e4 LT |
1325 | * @device:device to send query on |
1326 | * @port_num: port number to send query on | |
1327 | * @rec:Path Record to send in query | |
1328 | * @comp_mask:component mask to send in query | |
1329 | * @timeout_ms:time to wait for response | |
1330 | * @gfp_mask:GFP mask to use for internal allocations | |
1331 | * @callback:function called when query completes, times out or is | |
1332 | * canceled | |
1333 | * @context:opaque user context passed to callback | |
1334 | * @sa_query:query context, used to cancel query | |
1335 | * | |
1336 | * Send a Path Record Get query to the SA to look up a path. The | |
1337 | * callback function will be called when the query completes (or | |
1338 | * fails); status is 0 for a successful response, -EINTR if the query | |
1339 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
1340 | * occurred sending the query. The resp parameter of the callback is | |
1341 | * only valid if status is 0. | |
1342 | * | |
1343 | * If the return value of ib_sa_path_rec_get() is negative, it is an | |
1344 | * error code. Otherwise it is a query ID that can be used to cancel | |
1345 | * the query. | |
1346 | */ | |
c1a0b23b MT |
1347 | int ib_sa_path_rec_get(struct ib_sa_client *client, |
1348 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
1349 | struct ib_sa_path_rec *rec, |
1350 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 1351 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
1352 | void (*callback)(int status, |
1353 | struct ib_sa_path_rec *resp, | |
1354 | void *context), | |
1355 | void *context, | |
1356 | struct ib_sa_query **sa_query) | |
1357 | { | |
1358 | struct ib_sa_path_query *query; | |
1359 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
1360 | struct ib_sa_port *port; |
1361 | struct ib_mad_agent *agent; | |
34816ad9 | 1362 | struct ib_sa_mad *mad; |
1da177e4 LT |
1363 | int ret; |
1364 | ||
56c202d6 RD |
1365 | if (!sa_dev) |
1366 | return -ENODEV; | |
1367 | ||
1368 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
1369 | agent = port->agent; | |
1370 | ||
5d265770 | 1371 | query = kzalloc(sizeof(*query), gfp_mask); |
1da177e4 LT |
1372 | if (!query) |
1373 | return -ENOMEM; | |
34816ad9 | 1374 | |
2aec5c60 SH |
1375 | query->sa_query.port = port; |
1376 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
1377 | if (ret) | |
34816ad9 | 1378 | goto err1; |
1da177e4 | 1379 | |
c1a0b23b MT |
1380 | ib_sa_client_get(client); |
1381 | query->sa_query.client = client; | |
1382 | query->callback = callback; | |
1383 | query->context = context; | |
1da177e4 | 1384 | |
34816ad9 SH |
1385 | mad = query->sa_query.mad_buf->mad; |
1386 | init_mad(mad, agent); | |
1da177e4 | 1387 | |
34816ad9 SH |
1388 | query->sa_query.callback = callback ? ib_sa_path_rec_callback : NULL; |
1389 | query->sa_query.release = ib_sa_path_rec_release; | |
34816ad9 SH |
1390 | mad->mad_hdr.method = IB_MGMT_METHOD_GET; |
1391 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_PATH_REC); | |
1392 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 | 1393 | |
34816ad9 | 1394 | ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table), rec, mad->data); |
1da177e4 LT |
1395 | |
1396 | *sa_query = &query->sa_query; | |
dae4c1d2 | 1397 | |
2ca546b9 KW |
1398 | query->sa_query.flags |= IB_SA_ENABLE_LOCAL_SERVICE; |
1399 | query->sa_query.mad_buf->context[1] = rec; | |
1400 | ||
e322fedf | 1401 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
1402 | if (ret < 0) |
1403 | goto err2; | |
1404 | ||
1405 | return ret; | |
1406 | ||
1407 | err2: | |
1408 | *sa_query = NULL; | |
c1a0b23b | 1409 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 1410 | free_mad(&query->sa_query); |
1da177e4 | 1411 | |
34816ad9 SH |
1412 | err1: |
1413 | kfree(query); | |
dae4c1d2 | 1414 | return ret; |
1da177e4 LT |
1415 | } |
1416 | EXPORT_SYMBOL(ib_sa_path_rec_get); | |
1417 | ||
cbae32c5 HR |
1418 | static void ib_sa_service_rec_callback(struct ib_sa_query *sa_query, |
1419 | int status, | |
1420 | struct ib_sa_mad *mad) | |
1421 | { | |
1422 | struct ib_sa_service_query *query = | |
1423 | container_of(sa_query, struct ib_sa_service_query, sa_query); | |
1424 | ||
1425 | if (mad) { | |
1426 | struct ib_sa_service_rec rec; | |
1427 | ||
1428 | ib_unpack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
1429 | mad->data, &rec); | |
1430 | query->callback(status, &rec, query->context); | |
1431 | } else | |
1432 | query->callback(status, NULL, query->context); | |
1433 | } | |
1434 | ||
1435 | static void ib_sa_service_rec_release(struct ib_sa_query *sa_query) | |
1436 | { | |
cbae32c5 HR |
1437 | kfree(container_of(sa_query, struct ib_sa_service_query, sa_query)); |
1438 | } | |
1439 | ||
1440 | /** | |
1441 | * ib_sa_service_rec_query - Start Service Record operation | |
c1a0b23b | 1442 | * @client:SA client |
cbae32c5 HR |
1443 | * @device:device to send request on |
1444 | * @port_num: port number to send request on | |
1445 | * @method:SA method - should be get, set, or delete | |
1446 | * @rec:Service Record to send in request | |
1447 | * @comp_mask:component mask to send in request | |
1448 | * @timeout_ms:time to wait for response | |
1449 | * @gfp_mask:GFP mask to use for internal allocations | |
1450 | * @callback:function called when request completes, times out or is | |
1451 | * canceled | |
1452 | * @context:opaque user context passed to callback | |
1453 | * @sa_query:request context, used to cancel request | |
1454 | * | |
1455 | * Send a Service Record set/get/delete to the SA to register, | |
1456 | * unregister or query a service record. | |
1457 | * The callback function will be called when the request completes (or | |
1458 | * fails); status is 0 for a successful response, -EINTR if the query | |
1459 | * is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error | |
1460 | * occurred sending the query. The resp parameter of the callback is | |
1461 | * only valid if status is 0. | |
1462 | * | |
1463 | * If the return value of ib_sa_service_rec_query() is negative, it is an | |
1464 | * error code. Otherwise it is a request ID that can be used to cancel | |
1465 | * the query. | |
1466 | */ | |
c1a0b23b MT |
1467 | int ib_sa_service_rec_query(struct ib_sa_client *client, |
1468 | struct ib_device *device, u8 port_num, u8 method, | |
cbae32c5 HR |
1469 | struct ib_sa_service_rec *rec, |
1470 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 1471 | int timeout_ms, gfp_t gfp_mask, |
cbae32c5 HR |
1472 | void (*callback)(int status, |
1473 | struct ib_sa_service_rec *resp, | |
1474 | void *context), | |
1475 | void *context, | |
1476 | struct ib_sa_query **sa_query) | |
1477 | { | |
1478 | struct ib_sa_service_query *query; | |
1479 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
1480 | struct ib_sa_port *port; |
1481 | struct ib_mad_agent *agent; | |
34816ad9 | 1482 | struct ib_sa_mad *mad; |
cbae32c5 HR |
1483 | int ret; |
1484 | ||
56c202d6 RD |
1485 | if (!sa_dev) |
1486 | return -ENODEV; | |
1487 | ||
1488 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
1489 | agent = port->agent; | |
1490 | ||
cbae32c5 HR |
1491 | if (method != IB_MGMT_METHOD_GET && |
1492 | method != IB_MGMT_METHOD_SET && | |
1493 | method != IB_SA_METHOD_DELETE) | |
1494 | return -EINVAL; | |
1495 | ||
5d265770 | 1496 | query = kzalloc(sizeof(*query), gfp_mask); |
cbae32c5 HR |
1497 | if (!query) |
1498 | return -ENOMEM; | |
34816ad9 | 1499 | |
2aec5c60 SH |
1500 | query->sa_query.port = port; |
1501 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
1502 | if (ret) | |
34816ad9 | 1503 | goto err1; |
cbae32c5 | 1504 | |
c1a0b23b MT |
1505 | ib_sa_client_get(client); |
1506 | query->sa_query.client = client; | |
1507 | query->callback = callback; | |
1508 | query->context = context; | |
cbae32c5 | 1509 | |
34816ad9 SH |
1510 | mad = query->sa_query.mad_buf->mad; |
1511 | init_mad(mad, agent); | |
cbae32c5 | 1512 | |
34816ad9 SH |
1513 | query->sa_query.callback = callback ? ib_sa_service_rec_callback : NULL; |
1514 | query->sa_query.release = ib_sa_service_rec_release; | |
34816ad9 SH |
1515 | mad->mad_hdr.method = method; |
1516 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_SERVICE_REC); | |
1517 | mad->sa_hdr.comp_mask = comp_mask; | |
cbae32c5 HR |
1518 | |
1519 | ib_pack(service_rec_table, ARRAY_SIZE(service_rec_table), | |
34816ad9 | 1520 | rec, mad->data); |
cbae32c5 HR |
1521 | |
1522 | *sa_query = &query->sa_query; | |
1523 | ||
e322fedf | 1524 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
1525 | if (ret < 0) |
1526 | goto err2; | |
1527 | ||
1528 | return ret; | |
cbae32c5 | 1529 | |
34816ad9 SH |
1530 | err2: |
1531 | *sa_query = NULL; | |
c1a0b23b | 1532 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 1533 | free_mad(&query->sa_query); |
34816ad9 SH |
1534 | |
1535 | err1: | |
1536 | kfree(query); | |
cbae32c5 HR |
1537 | return ret; |
1538 | } | |
1539 | EXPORT_SYMBOL(ib_sa_service_rec_query); | |
1540 | ||
1da177e4 LT |
1541 | static void ib_sa_mcmember_rec_callback(struct ib_sa_query *sa_query, |
1542 | int status, | |
1543 | struct ib_sa_mad *mad) | |
1544 | { | |
1545 | struct ib_sa_mcmember_query *query = | |
1546 | container_of(sa_query, struct ib_sa_mcmember_query, sa_query); | |
1547 | ||
1548 | if (mad) { | |
1549 | struct ib_sa_mcmember_rec rec; | |
1550 | ||
1551 | ib_unpack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
1552 | mad->data, &rec); | |
1553 | query->callback(status, &rec, query->context); | |
1554 | } else | |
1555 | query->callback(status, NULL, query->context); | |
1556 | } | |
1557 | ||
1558 | static void ib_sa_mcmember_rec_release(struct ib_sa_query *sa_query) | |
1559 | { | |
1da177e4 LT |
1560 | kfree(container_of(sa_query, struct ib_sa_mcmember_query, sa_query)); |
1561 | } | |
1562 | ||
c1a0b23b MT |
1563 | int ib_sa_mcmember_rec_query(struct ib_sa_client *client, |
1564 | struct ib_device *device, u8 port_num, | |
1da177e4 LT |
1565 | u8 method, |
1566 | struct ib_sa_mcmember_rec *rec, | |
1567 | ib_sa_comp_mask comp_mask, | |
dd0fc66f | 1568 | int timeout_ms, gfp_t gfp_mask, |
1da177e4 LT |
1569 | void (*callback)(int status, |
1570 | struct ib_sa_mcmember_rec *resp, | |
1571 | void *context), | |
1572 | void *context, | |
1573 | struct ib_sa_query **sa_query) | |
1574 | { | |
1575 | struct ib_sa_mcmember_query *query; | |
1576 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
56c202d6 RD |
1577 | struct ib_sa_port *port; |
1578 | struct ib_mad_agent *agent; | |
34816ad9 | 1579 | struct ib_sa_mad *mad; |
1da177e4 LT |
1580 | int ret; |
1581 | ||
56c202d6 RD |
1582 | if (!sa_dev) |
1583 | return -ENODEV; | |
1584 | ||
1585 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
1586 | agent = port->agent; | |
1587 | ||
5d265770 | 1588 | query = kzalloc(sizeof(*query), gfp_mask); |
1da177e4 LT |
1589 | if (!query) |
1590 | return -ENOMEM; | |
34816ad9 | 1591 | |
2aec5c60 SH |
1592 | query->sa_query.port = port; |
1593 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
1594 | if (ret) | |
34816ad9 | 1595 | goto err1; |
1da177e4 | 1596 | |
c1a0b23b MT |
1597 | ib_sa_client_get(client); |
1598 | query->sa_query.client = client; | |
1599 | query->callback = callback; | |
1600 | query->context = context; | |
1da177e4 | 1601 | |
34816ad9 SH |
1602 | mad = query->sa_query.mad_buf->mad; |
1603 | init_mad(mad, agent); | |
1da177e4 | 1604 | |
34816ad9 SH |
1605 | query->sa_query.callback = callback ? ib_sa_mcmember_rec_callback : NULL; |
1606 | query->sa_query.release = ib_sa_mcmember_rec_release; | |
34816ad9 SH |
1607 | mad->mad_hdr.method = method; |
1608 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC); | |
1609 | mad->sa_hdr.comp_mask = comp_mask; | |
1da177e4 LT |
1610 | |
1611 | ib_pack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table), | |
34816ad9 | 1612 | rec, mad->data); |
1da177e4 LT |
1613 | |
1614 | *sa_query = &query->sa_query; | |
dae4c1d2 | 1615 | |
e322fedf | 1616 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); |
34816ad9 SH |
1617 | if (ret < 0) |
1618 | goto err2; | |
1da177e4 | 1619 | |
dae4c1d2 | 1620 | return ret; |
34816ad9 SH |
1621 | |
1622 | err2: | |
1623 | *sa_query = NULL; | |
c1a0b23b | 1624 | ib_sa_client_put(query->sa_query.client); |
2aec5c60 | 1625 | free_mad(&query->sa_query); |
34816ad9 SH |
1626 | |
1627 | err1: | |
1628 | kfree(query); | |
1629 | return ret; | |
1da177e4 | 1630 | } |
1da177e4 | 1631 | |
aeab97ed ES |
1632 | /* Support GuidInfoRecord */ |
1633 | static void ib_sa_guidinfo_rec_callback(struct ib_sa_query *sa_query, | |
1634 | int status, | |
1635 | struct ib_sa_mad *mad) | |
1636 | { | |
1637 | struct ib_sa_guidinfo_query *query = | |
1638 | container_of(sa_query, struct ib_sa_guidinfo_query, sa_query); | |
1639 | ||
1640 | if (mad) { | |
1641 | struct ib_sa_guidinfo_rec rec; | |
1642 | ||
1643 | ib_unpack(guidinfo_rec_table, ARRAY_SIZE(guidinfo_rec_table), | |
1644 | mad->data, &rec); | |
1645 | query->callback(status, &rec, query->context); | |
1646 | } else | |
1647 | query->callback(status, NULL, query->context); | |
1648 | } | |
1649 | ||
1650 | static void ib_sa_guidinfo_rec_release(struct ib_sa_query *sa_query) | |
1651 | { | |
1652 | kfree(container_of(sa_query, struct ib_sa_guidinfo_query, sa_query)); | |
1653 | } | |
1654 | ||
1655 | int ib_sa_guid_info_rec_query(struct ib_sa_client *client, | |
1656 | struct ib_device *device, u8 port_num, | |
1657 | struct ib_sa_guidinfo_rec *rec, | |
1658 | ib_sa_comp_mask comp_mask, u8 method, | |
1659 | int timeout_ms, gfp_t gfp_mask, | |
1660 | void (*callback)(int status, | |
1661 | struct ib_sa_guidinfo_rec *resp, | |
1662 | void *context), | |
1663 | void *context, | |
1664 | struct ib_sa_query **sa_query) | |
1665 | { | |
1666 | struct ib_sa_guidinfo_query *query; | |
1667 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
1668 | struct ib_sa_port *port; | |
1669 | struct ib_mad_agent *agent; | |
1670 | struct ib_sa_mad *mad; | |
1671 | int ret; | |
1672 | ||
1673 | if (!sa_dev) | |
1674 | return -ENODEV; | |
1675 | ||
1676 | if (method != IB_MGMT_METHOD_GET && | |
1677 | method != IB_MGMT_METHOD_SET && | |
1678 | method != IB_SA_METHOD_DELETE) { | |
1679 | return -EINVAL; | |
1680 | } | |
1681 | ||
1682 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
1683 | agent = port->agent; | |
1684 | ||
5d265770 | 1685 | query = kzalloc(sizeof(*query), gfp_mask); |
aeab97ed ES |
1686 | if (!query) |
1687 | return -ENOMEM; | |
1688 | ||
1689 | query->sa_query.port = port; | |
1690 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
1691 | if (ret) | |
1692 | goto err1; | |
1693 | ||
1694 | ib_sa_client_get(client); | |
1695 | query->sa_query.client = client; | |
1696 | query->callback = callback; | |
1697 | query->context = context; | |
1698 | ||
1699 | mad = query->sa_query.mad_buf->mad; | |
1700 | init_mad(mad, agent); | |
1701 | ||
1702 | query->sa_query.callback = callback ? ib_sa_guidinfo_rec_callback : NULL; | |
1703 | query->sa_query.release = ib_sa_guidinfo_rec_release; | |
1704 | ||
1705 | mad->mad_hdr.method = method; | |
1706 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_GUID_INFO_REC); | |
1707 | mad->sa_hdr.comp_mask = comp_mask; | |
1708 | ||
1709 | ib_pack(guidinfo_rec_table, ARRAY_SIZE(guidinfo_rec_table), rec, | |
1710 | mad->data); | |
1711 | ||
1712 | *sa_query = &query->sa_query; | |
1713 | ||
1714 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); | |
1715 | if (ret < 0) | |
1716 | goto err2; | |
1717 | ||
1718 | return ret; | |
1719 | ||
1720 | err2: | |
1721 | *sa_query = NULL; | |
1722 | ib_sa_client_put(query->sa_query.client); | |
1723 | free_mad(&query->sa_query); | |
1724 | ||
1725 | err1: | |
1726 | kfree(query); | |
1727 | return ret; | |
1728 | } | |
1729 | EXPORT_SYMBOL(ib_sa_guid_info_rec_query); | |
1730 | ||
628e6f75 ES |
1731 | /* Support get SA ClassPortInfo */ |
1732 | static void ib_sa_classport_info_rec_callback(struct ib_sa_query *sa_query, | |
1733 | int status, | |
1734 | struct ib_sa_mad *mad) | |
1735 | { | |
3d3fd742 | 1736 | unsigned long flags; |
628e6f75 ES |
1737 | struct ib_sa_classport_info_query *query = |
1738 | container_of(sa_query, struct ib_sa_classport_info_query, sa_query); | |
1739 | ||
1740 | if (mad) { | |
1741 | struct ib_class_port_info rec; | |
1742 | ||
1743 | ib_unpack(classport_info_rec_table, | |
1744 | ARRAY_SIZE(classport_info_rec_table), | |
1745 | mad->data, &rec); | |
3d3fd742 AV |
1746 | |
1747 | spin_lock_irqsave(&sa_query->port->classport_lock, flags); | |
1748 | if (!status && !sa_query->port->classport_info.valid) { | |
1749 | memcpy(&sa_query->port->classport_info.data, &rec, | |
1750 | sizeof(sa_query->port->classport_info.data)); | |
1751 | ||
1752 | sa_query->port->classport_info.valid = true; | |
1753 | } | |
1754 | spin_unlock_irqrestore(&sa_query->port->classport_lock, flags); | |
1755 | ||
628e6f75 ES |
1756 | query->callback(status, &rec, query->context); |
1757 | } else { | |
1758 | query->callback(status, NULL, query->context); | |
1759 | } | |
1760 | } | |
1761 | ||
1762 | static void ib_sa_portclass_info_rec_release(struct ib_sa_query *sa_query) | |
1763 | { | |
1764 | kfree(container_of(sa_query, struct ib_sa_classport_info_query, | |
1765 | sa_query)); | |
1766 | } | |
1767 | ||
1768 | int ib_sa_classport_info_rec_query(struct ib_sa_client *client, | |
1769 | struct ib_device *device, u8 port_num, | |
1770 | int timeout_ms, gfp_t gfp_mask, | |
1771 | void (*callback)(int status, | |
1772 | struct ib_class_port_info *resp, | |
1773 | void *context), | |
1774 | void *context, | |
1775 | struct ib_sa_query **sa_query) | |
1776 | { | |
1777 | struct ib_sa_classport_info_query *query; | |
1778 | struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client); | |
1779 | struct ib_sa_port *port; | |
1780 | struct ib_mad_agent *agent; | |
1781 | struct ib_sa_mad *mad; | |
3d3fd742 | 1782 | struct ib_class_port_info cached_class_port_info; |
628e6f75 | 1783 | int ret; |
3d3fd742 | 1784 | unsigned long flags; |
628e6f75 ES |
1785 | |
1786 | if (!sa_dev) | |
1787 | return -ENODEV; | |
1788 | ||
1789 | port = &sa_dev->port[port_num - sa_dev->start_port]; | |
1790 | agent = port->agent; | |
1791 | ||
3d3fd742 AV |
1792 | /* Use cached ClassPortInfo attribute if valid instead of sending mad */ |
1793 | spin_lock_irqsave(&port->classport_lock, flags); | |
1794 | if (port->classport_info.valid && callback) { | |
1795 | memcpy(&cached_class_port_info, &port->classport_info.data, | |
1796 | sizeof(cached_class_port_info)); | |
1797 | spin_unlock_irqrestore(&port->classport_lock, flags); | |
1798 | callback(0, &cached_class_port_info, context); | |
1799 | return 0; | |
1800 | } | |
1801 | spin_unlock_irqrestore(&port->classport_lock, flags); | |
1802 | ||
628e6f75 ES |
1803 | query = kzalloc(sizeof(*query), gfp_mask); |
1804 | if (!query) | |
1805 | return -ENOMEM; | |
1806 | ||
1807 | query->sa_query.port = port; | |
1808 | ret = alloc_mad(&query->sa_query, gfp_mask); | |
1809 | if (ret) | |
1810 | goto err1; | |
1811 | ||
1812 | ib_sa_client_get(client); | |
1813 | query->sa_query.client = client; | |
1814 | query->callback = callback; | |
1815 | query->context = context; | |
1816 | ||
1817 | mad = query->sa_query.mad_buf->mad; | |
1818 | init_mad(mad, agent); | |
1819 | ||
1820 | query->sa_query.callback = callback ? ib_sa_classport_info_rec_callback : NULL; | |
1821 | ||
1822 | query->sa_query.release = ib_sa_portclass_info_rec_release; | |
1823 | /* support GET only */ | |
1824 | mad->mad_hdr.method = IB_MGMT_METHOD_GET; | |
1825 | mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_CLASS_PORTINFO); | |
1826 | mad->sa_hdr.comp_mask = 0; | |
1827 | *sa_query = &query->sa_query; | |
1828 | ||
1829 | ret = send_mad(&query->sa_query, timeout_ms, gfp_mask); | |
1830 | if (ret < 0) | |
1831 | goto err2; | |
1832 | ||
1833 | return ret; | |
1834 | ||
1835 | err2: | |
1836 | *sa_query = NULL; | |
1837 | ib_sa_client_put(query->sa_query.client); | |
1838 | free_mad(&query->sa_query); | |
1839 | ||
1840 | err1: | |
1841 | kfree(query); | |
1842 | return ret; | |
1843 | } | |
1844 | EXPORT_SYMBOL(ib_sa_classport_info_rec_query); | |
1845 | ||
1da177e4 LT |
1846 | static void send_handler(struct ib_mad_agent *agent, |
1847 | struct ib_mad_send_wc *mad_send_wc) | |
1848 | { | |
34816ad9 | 1849 | struct ib_sa_query *query = mad_send_wc->send_buf->context[0]; |
1da177e4 LT |
1850 | unsigned long flags; |
1851 | ||
e4f50f00 RD |
1852 | if (query->callback) |
1853 | switch (mad_send_wc->status) { | |
1854 | case IB_WC_SUCCESS: | |
1855 | /* No callback -- already got recv */ | |
1856 | break; | |
1857 | case IB_WC_RESP_TIMEOUT_ERR: | |
1858 | query->callback(query, -ETIMEDOUT, NULL); | |
1859 | break; | |
1860 | case IB_WC_WR_FLUSH_ERR: | |
1861 | query->callback(query, -EINTR, NULL); | |
1862 | break; | |
1863 | default: | |
1864 | query->callback(query, -EIO, NULL); | |
1865 | break; | |
1866 | } | |
1da177e4 | 1867 | |
1da177e4 | 1868 | spin_lock_irqsave(&idr_lock, flags); |
34816ad9 | 1869 | idr_remove(&query_idr, query->id); |
1da177e4 | 1870 | spin_unlock_irqrestore(&idr_lock, flags); |
34816ad9 | 1871 | |
2aec5c60 | 1872 | free_mad(query); |
c1a0b23b | 1873 | ib_sa_client_put(query->client); |
34816ad9 | 1874 | query->release(query); |
1da177e4 LT |
1875 | } |
1876 | ||
1877 | static void recv_handler(struct ib_mad_agent *mad_agent, | |
ca281265 | 1878 | struct ib_mad_send_buf *send_buf, |
1da177e4 LT |
1879 | struct ib_mad_recv_wc *mad_recv_wc) |
1880 | { | |
1881 | struct ib_sa_query *query; | |
1da177e4 | 1882 | |
ca281265 CH |
1883 | if (!send_buf) |
1884 | return; | |
1da177e4 | 1885 | |
ca281265 | 1886 | query = send_buf->context[0]; |
34816ad9 | 1887 | if (query->callback) { |
1da177e4 LT |
1888 | if (mad_recv_wc->wc->status == IB_WC_SUCCESS) |
1889 | query->callback(query, | |
1890 | mad_recv_wc->recv_buf.mad->mad_hdr.status ? | |
1891 | -EINVAL : 0, | |
1892 | (struct ib_sa_mad *) mad_recv_wc->recv_buf.mad); | |
1893 | else | |
1894 | query->callback(query, -EIO, NULL); | |
1895 | } | |
1896 | ||
1897 | ib_free_recv_mad(mad_recv_wc); | |
1898 | } | |
1899 | ||
1900 | static void ib_sa_add_one(struct ib_device *device) | |
1901 | { | |
1902 | struct ib_sa_device *sa_dev; | |
1903 | int s, e, i; | |
08e3681a | 1904 | int count = 0; |
07ebafba | 1905 | |
4139032b HR |
1906 | s = rdma_start_port(device); |
1907 | e = rdma_end_port(device); | |
1da177e4 | 1908 | |
fac70d51 | 1909 | sa_dev = kzalloc(sizeof *sa_dev + |
1da177e4 LT |
1910 | (e - s + 1) * sizeof (struct ib_sa_port), |
1911 | GFP_KERNEL); | |
1912 | if (!sa_dev) | |
1913 | return; | |
1914 | ||
1915 | sa_dev->start_port = s; | |
1916 | sa_dev->end_port = e; | |
1917 | ||
1918 | for (i = 0; i <= e - s; ++i) { | |
fac70d51 | 1919 | spin_lock_init(&sa_dev->port[i].ah_lock); |
fe53ba2f | 1920 | if (!rdma_cap_ib_sa(device, i + 1)) |
fac70d51 EC |
1921 | continue; |
1922 | ||
1da177e4 LT |
1923 | sa_dev->port[i].sm_ah = NULL; |
1924 | sa_dev->port[i].port_num = i + s; | |
1da177e4 | 1925 | |
3d3fd742 AV |
1926 | spin_lock_init(&sa_dev->port[i].classport_lock); |
1927 | sa_dev->port[i].classport_info.valid = false; | |
1928 | ||
1da177e4 LT |
1929 | sa_dev->port[i].agent = |
1930 | ib_register_mad_agent(device, i + s, IB_QPT_GSI, | |
1931 | NULL, 0, send_handler, | |
0f29b46d | 1932 | recv_handler, sa_dev, 0); |
1da177e4 LT |
1933 | if (IS_ERR(sa_dev->port[i].agent)) |
1934 | goto err; | |
1935 | ||
c4028958 | 1936 | INIT_WORK(&sa_dev->port[i].update_task, update_sm_ah); |
08e3681a MW |
1937 | |
1938 | count++; | |
1da177e4 LT |
1939 | } |
1940 | ||
08e3681a MW |
1941 | if (!count) |
1942 | goto free; | |
1943 | ||
1da177e4 LT |
1944 | ib_set_client_data(device, &sa_client, sa_dev); |
1945 | ||
1946 | /* | |
1947 | * We register our event handler after everything is set up, | |
1948 | * and then update our cached info after the event handler is | |
1949 | * registered to avoid any problems if a port changes state | |
1950 | * during our initialization. | |
1951 | */ | |
1952 | ||
1953 | INIT_IB_EVENT_HANDLER(&sa_dev->event_handler, device, ib_sa_event); | |
1954 | if (ib_register_event_handler(&sa_dev->event_handler)) | |
1955 | goto err; | |
1956 | ||
08e3681a | 1957 | for (i = 0; i <= e - s; ++i) { |
fe53ba2f | 1958 | if (rdma_cap_ib_sa(device, i + 1)) |
fac70d51 | 1959 | update_sm_ah(&sa_dev->port[i].update_task); |
08e3681a | 1960 | } |
1da177e4 LT |
1961 | |
1962 | return; | |
1963 | ||
1964 | err: | |
08e3681a | 1965 | while (--i >= 0) { |
fe53ba2f | 1966 | if (rdma_cap_ib_sa(device, i + 1)) |
fac70d51 | 1967 | ib_unregister_mad_agent(sa_dev->port[i].agent); |
08e3681a MW |
1968 | } |
1969 | free: | |
1da177e4 | 1970 | kfree(sa_dev); |
1da177e4 LT |
1971 | return; |
1972 | } | |
1973 | ||
7c1eb45a | 1974 | static void ib_sa_remove_one(struct ib_device *device, void *client_data) |
1da177e4 | 1975 | { |
7c1eb45a | 1976 | struct ib_sa_device *sa_dev = client_data; |
1da177e4 LT |
1977 | int i; |
1978 | ||
1979 | if (!sa_dev) | |
1980 | return; | |
1981 | ||
1982 | ib_unregister_event_handler(&sa_dev->event_handler); | |
1983 | ||
96e61fa5 | 1984 | flush_workqueue(ib_wq); |
0f47ae0b | 1985 | |
1da177e4 | 1986 | for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) { |
fe53ba2f | 1987 | if (rdma_cap_ib_sa(device, i + 1)) { |
fac70d51 EC |
1988 | ib_unregister_mad_agent(sa_dev->port[i].agent); |
1989 | if (sa_dev->port[i].sm_ah) | |
1990 | kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah); | |
1991 | } | |
1992 | ||
1da177e4 LT |
1993 | } |
1994 | ||
1995 | kfree(sa_dev); | |
1996 | } | |
1997 | ||
c2e49c92 | 1998 | int ib_sa_init(void) |
1da177e4 LT |
1999 | { |
2000 | int ret; | |
2001 | ||
1da177e4 LT |
2002 | get_random_bytes(&tid, sizeof tid); |
2003 | ||
2ca546b9 KW |
2004 | atomic_set(&ib_nl_sa_request_seq, 0); |
2005 | ||
1da177e4 | 2006 | ret = ib_register_client(&sa_client); |
faec2f7b | 2007 | if (ret) { |
aba25a3e | 2008 | pr_err("Couldn't register ib_sa client\n"); |
faec2f7b SH |
2009 | goto err1; |
2010 | } | |
2011 | ||
2012 | ret = mcast_init(); | |
2013 | if (ret) { | |
aba25a3e | 2014 | pr_err("Couldn't initialize multicast handling\n"); |
faec2f7b SH |
2015 | goto err2; |
2016 | } | |
1da177e4 | 2017 | |
4534d859 | 2018 | ib_nl_wq = alloc_ordered_workqueue("ib_nl_sa_wq", WQ_MEM_RECLAIM); |
2ca546b9 KW |
2019 | if (!ib_nl_wq) { |
2020 | ret = -ENOMEM; | |
2021 | goto err3; | |
2022 | } | |
2023 | ||
2ca546b9 KW |
2024 | INIT_DELAYED_WORK(&ib_nl_timed_work, ib_nl_request_timeout); |
2025 | ||
faec2f7b | 2026 | return 0; |
735c631a | 2027 | |
2ca546b9 KW |
2028 | err3: |
2029 | mcast_cleanup(); | |
faec2f7b SH |
2030 | err2: |
2031 | ib_unregister_client(&sa_client); | |
2032 | err1: | |
1da177e4 LT |
2033 | return ret; |
2034 | } | |
2035 | ||
c2e49c92 | 2036 | void ib_sa_cleanup(void) |
1da177e4 | 2037 | { |
2ca546b9 KW |
2038 | cancel_delayed_work(&ib_nl_timed_work); |
2039 | flush_workqueue(ib_nl_wq); | |
2040 | destroy_workqueue(ib_nl_wq); | |
faec2f7b | 2041 | mcast_cleanup(); |
1da177e4 | 2042 | ib_unregister_client(&sa_client); |
5d7edb3c | 2043 | idr_destroy(&query_idr); |
1da177e4 | 2044 | } |