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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2004 Topspin Communications. All rights reserved. | |
2a1d9b7f | 3 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
1da177e4 LT |
4 | * |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the | |
9 | * OpenIB.org BSD license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * - Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
1da177e4 LT |
32 | */ |
33 | ||
34 | #include <linux/module.h> | |
35 | #include <linux/string.h> | |
36 | #include <linux/errno.h> | |
9a6b090c | 37 | #include <linux/kernel.h> |
1da177e4 LT |
38 | #include <linux/slab.h> |
39 | #include <linux/init.h> | |
9268f72d | 40 | #include <linux/netdevice.h> |
8f408ab6 DJ |
41 | #include <linux/security.h> |
42 | #include <linux/notifier.h> | |
b2cbae2c | 43 | #include <rdma/rdma_netlink.h> |
03db3a2d MB |
44 | #include <rdma/ib_addr.h> |
45 | #include <rdma/ib_cache.h> | |
1da177e4 LT |
46 | |
47 | #include "core_priv.h" | |
41eda65c | 48 | #include "restrack.h" |
1da177e4 LT |
49 | |
50 | MODULE_AUTHOR("Roland Dreier"); | |
51 | MODULE_DESCRIPTION("core kernel InfiniBand API"); | |
52 | MODULE_LICENSE("Dual BSD/GPL"); | |
53 | ||
14d3a3b2 | 54 | struct workqueue_struct *ib_comp_wq; |
f794809a | 55 | struct workqueue_struct *ib_comp_unbound_wq; |
f0626710 TH |
56 | struct workqueue_struct *ib_wq; |
57 | EXPORT_SYMBOL_GPL(ib_wq); | |
58 | ||
921eab11 JG |
59 | /* |
60 | * Each of the three rwsem locks (devices, clients, client_data) protects the | |
61 | * xarray of the same name. Specifically it allows the caller to assert that | |
62 | * the MARK will/will not be changing under the lock, and for devices and | |
63 | * clients, that the value in the xarray is still a valid pointer. Change of | |
64 | * the MARK is linked to the object state, so holding the lock and testing the | |
65 | * MARK also asserts that the contained object is in a certain state. | |
66 | * | |
67 | * This is used to build a two stage register/unregister flow where objects | |
68 | * can continue to be in the xarray even though they are still in progress to | |
69 | * register/unregister. | |
70 | * | |
71 | * The xarray itself provides additional locking, and restartable iteration, | |
72 | * which is also relied on. | |
73 | * | |
74 | * Locks should not be nested, with the exception of client_data, which is | |
75 | * allowed to nest under the read side of the other two locks. | |
76 | * | |
77 | * The devices_rwsem also protects the device name list, any change or | |
78 | * assignment of device name must also hold the write side to guarantee unique | |
79 | * names. | |
80 | */ | |
81 | ||
0df91bb6 JG |
82 | /* |
83 | * devices contains devices that have had their names assigned. The | |
84 | * devices may not be registered. Users that care about the registration | |
85 | * status need to call ib_device_try_get() on the device to ensure it is | |
86 | * registered, and keep it registered, for the required duration. | |
87 | * | |
88 | */ | |
89 | static DEFINE_XARRAY_FLAGS(devices, XA_FLAGS_ALLOC); | |
921eab11 | 90 | static DECLARE_RWSEM(devices_rwsem); |
0df91bb6 JG |
91 | #define DEVICE_REGISTERED XA_MARK_1 |
92 | ||
1da177e4 | 93 | static LIST_HEAD(client_list); |
e59178d8 JG |
94 | #define CLIENT_REGISTERED XA_MARK_1 |
95 | static DEFINE_XARRAY_FLAGS(clients, XA_FLAGS_ALLOC); | |
921eab11 | 96 | static DECLARE_RWSEM(clients_rwsem); |
1da177e4 LT |
97 | |
98 | /* | |
0df91bb6 JG |
99 | * If client_data is registered then the corresponding client must also still |
100 | * be registered. | |
101 | */ | |
102 | #define CLIENT_DATA_REGISTERED XA_MARK_1 | |
103 | /* | |
104 | * xarray has this behavior where it won't iterate over NULL values stored in | |
105 | * allocated arrays. So we need our own iterator to see all values stored in | |
106 | * the array. This does the same thing as xa_for_each except that it also | |
107 | * returns NULL valued entries if the array is allocating. Simplified to only | |
108 | * work on simple xarrays. | |
109 | */ | |
110 | static void *xan_find_marked(struct xarray *xa, unsigned long *indexp, | |
111 | xa_mark_t filter) | |
112 | { | |
113 | XA_STATE(xas, xa, *indexp); | |
114 | void *entry; | |
115 | ||
116 | rcu_read_lock(); | |
117 | do { | |
118 | entry = xas_find_marked(&xas, ULONG_MAX, filter); | |
119 | if (xa_is_zero(entry)) | |
120 | break; | |
121 | } while (xas_retry(&xas, entry)); | |
122 | rcu_read_unlock(); | |
123 | ||
124 | if (entry) { | |
125 | *indexp = xas.xa_index; | |
126 | if (xa_is_zero(entry)) | |
127 | return NULL; | |
128 | return entry; | |
129 | } | |
130 | return XA_ERROR(-ENOENT); | |
131 | } | |
132 | #define xan_for_each_marked(xa, index, entry, filter) \ | |
133 | for (index = 0, entry = xan_find_marked(xa, &(index), filter); \ | |
134 | !xa_is_err(entry); \ | |
135 | (index)++, entry = xan_find_marked(xa, &(index), filter)) | |
136 | ||
8f408ab6 DJ |
137 | static int ib_security_change(struct notifier_block *nb, unsigned long event, |
138 | void *lsm_data); | |
139 | static void ib_policy_change_task(struct work_struct *work); | |
140 | static DECLARE_WORK(ib_policy_change_work, ib_policy_change_task); | |
141 | ||
142 | static struct notifier_block ibdev_lsm_nb = { | |
143 | .notifier_call = ib_security_change, | |
144 | }; | |
1da177e4 LT |
145 | |
146 | static int ib_device_check_mandatory(struct ib_device *device) | |
147 | { | |
3023a1e9 | 148 | #define IB_MANDATORY_FUNC(x) { offsetof(struct ib_device_ops, x), #x } |
1da177e4 LT |
149 | static const struct { |
150 | size_t offset; | |
151 | char *name; | |
152 | } mandatory_table[] = { | |
153 | IB_MANDATORY_FUNC(query_device), | |
154 | IB_MANDATORY_FUNC(query_port), | |
155 | IB_MANDATORY_FUNC(query_pkey), | |
1da177e4 LT |
156 | IB_MANDATORY_FUNC(alloc_pd), |
157 | IB_MANDATORY_FUNC(dealloc_pd), | |
1da177e4 LT |
158 | IB_MANDATORY_FUNC(create_qp), |
159 | IB_MANDATORY_FUNC(modify_qp), | |
160 | IB_MANDATORY_FUNC(destroy_qp), | |
161 | IB_MANDATORY_FUNC(post_send), | |
162 | IB_MANDATORY_FUNC(post_recv), | |
163 | IB_MANDATORY_FUNC(create_cq), | |
164 | IB_MANDATORY_FUNC(destroy_cq), | |
165 | IB_MANDATORY_FUNC(poll_cq), | |
166 | IB_MANDATORY_FUNC(req_notify_cq), | |
167 | IB_MANDATORY_FUNC(get_dma_mr), | |
7738613e IW |
168 | IB_MANDATORY_FUNC(dereg_mr), |
169 | IB_MANDATORY_FUNC(get_port_immutable) | |
1da177e4 LT |
170 | }; |
171 | int i; | |
172 | ||
6780c4fa | 173 | device->kverbs_provider = true; |
9a6b090c | 174 | for (i = 0; i < ARRAY_SIZE(mandatory_table); ++i) { |
3023a1e9 KH |
175 | if (!*(void **) ((void *) &device->ops + |
176 | mandatory_table[i].offset)) { | |
6780c4fa GP |
177 | device->kverbs_provider = false; |
178 | break; | |
1da177e4 LT |
179 | } |
180 | } | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
f8978bd9 | 185 | /* |
01b67117 PP |
186 | * Caller must perform ib_device_put() to return the device reference count |
187 | * when ib_device_get_by_index() returns valid device pointer. | |
f8978bd9 LR |
188 | */ |
189 | struct ib_device *ib_device_get_by_index(u32 index) | |
190 | { | |
191 | struct ib_device *device; | |
192 | ||
921eab11 | 193 | down_read(&devices_rwsem); |
0df91bb6 | 194 | device = xa_load(&devices, index); |
01b67117 | 195 | if (device) { |
d79af724 | 196 | if (!ib_device_try_get(device)) |
01b67117 PP |
197 | device = NULL; |
198 | } | |
921eab11 | 199 | up_read(&devices_rwsem); |
f8978bd9 LR |
200 | return device; |
201 | } | |
202 | ||
d79af724 JG |
203 | /** |
204 | * ib_device_put - Release IB device reference | |
205 | * @device: device whose reference to be released | |
206 | * | |
207 | * ib_device_put() releases reference to the IB device to allow it to be | |
208 | * unregistered and eventually free. | |
209 | */ | |
01b67117 PP |
210 | void ib_device_put(struct ib_device *device) |
211 | { | |
212 | if (refcount_dec_and_test(&device->refcount)) | |
213 | complete(&device->unreg_completion); | |
214 | } | |
d79af724 | 215 | EXPORT_SYMBOL(ib_device_put); |
01b67117 | 216 | |
1da177e4 LT |
217 | static struct ib_device *__ib_device_get_by_name(const char *name) |
218 | { | |
219 | struct ib_device *device; | |
0df91bb6 | 220 | unsigned long index; |
1da177e4 | 221 | |
0df91bb6 | 222 | xa_for_each (&devices, index, device) |
896de009 | 223 | if (!strcmp(name, dev_name(&device->dev))) |
1da177e4 LT |
224 | return device; |
225 | ||
226 | return NULL; | |
227 | } | |
228 | ||
d21943dd LR |
229 | int ib_device_rename(struct ib_device *ibdev, const char *name) |
230 | { | |
e3593b56 | 231 | int ret; |
d21943dd | 232 | |
921eab11 | 233 | down_write(&devices_rwsem); |
e3593b56 JG |
234 | if (!strcmp(name, dev_name(&ibdev->dev))) { |
235 | ret = 0; | |
236 | goto out; | |
237 | } | |
238 | ||
344684e6 JG |
239 | if (__ib_device_get_by_name(name)) { |
240 | ret = -EEXIST; | |
241 | goto out; | |
d21943dd LR |
242 | } |
243 | ||
244 | ret = device_rename(&ibdev->dev, name); | |
245 | if (ret) | |
246 | goto out; | |
247 | strlcpy(ibdev->name, name, IB_DEVICE_NAME_MAX); | |
248 | out: | |
921eab11 | 249 | up_write(&devices_rwsem); |
d21943dd LR |
250 | return ret; |
251 | } | |
252 | ||
e349f858 | 253 | static int alloc_name(struct ib_device *ibdev, const char *name) |
1da177e4 | 254 | { |
1da177e4 | 255 | struct ib_device *device; |
0df91bb6 | 256 | unsigned long index; |
3b88afd3 JG |
257 | struct ida inuse; |
258 | int rc; | |
1da177e4 LT |
259 | int i; |
260 | ||
921eab11 | 261 | lockdep_assert_held_exclusive(&devices_rwsem); |
3b88afd3 | 262 | ida_init(&inuse); |
0df91bb6 | 263 | xa_for_each (&devices, index, device) { |
e349f858 JG |
264 | char buf[IB_DEVICE_NAME_MAX]; |
265 | ||
896de009 | 266 | if (sscanf(dev_name(&device->dev), name, &i) != 1) |
1da177e4 | 267 | continue; |
3b88afd3 | 268 | if (i < 0 || i >= INT_MAX) |
1da177e4 LT |
269 | continue; |
270 | snprintf(buf, sizeof buf, name, i); | |
3b88afd3 JG |
271 | if (strcmp(buf, dev_name(&device->dev)) != 0) |
272 | continue; | |
273 | ||
274 | rc = ida_alloc_range(&inuse, i, i, GFP_KERNEL); | |
275 | if (rc < 0) | |
276 | goto out; | |
1da177e4 LT |
277 | } |
278 | ||
3b88afd3 JG |
279 | rc = ida_alloc(&inuse, GFP_KERNEL); |
280 | if (rc < 0) | |
281 | goto out; | |
1da177e4 | 282 | |
3b88afd3 JG |
283 | rc = dev_set_name(&ibdev->dev, name, rc); |
284 | out: | |
285 | ida_destroy(&inuse); | |
286 | return rc; | |
1da177e4 LT |
287 | } |
288 | ||
55aeed06 JG |
289 | static void ib_device_release(struct device *device) |
290 | { | |
291 | struct ib_device *dev = container_of(device, struct ib_device, dev); | |
292 | ||
652432f3 | 293 | WARN_ON(refcount_read(&dev->refcount)); |
d45f89d5 | 294 | ib_cache_release_one(dev); |
b34b269a JG |
295 | ib_security_release_port_pkey_list(dev); |
296 | kfree(dev->port_pkey_list); | |
d45f89d5 | 297 | kfree(dev->port_immutable); |
0df91bb6 | 298 | xa_destroy(&dev->client_data); |
55aeed06 JG |
299 | kfree(dev); |
300 | } | |
301 | ||
302 | static int ib_device_uevent(struct device *device, | |
303 | struct kobj_uevent_env *env) | |
304 | { | |
896de009 | 305 | if (add_uevent_var(env, "NAME=%s", dev_name(device))) |
55aeed06 JG |
306 | return -ENOMEM; |
307 | ||
308 | /* | |
309 | * It would be nice to pass the node GUID with the event... | |
310 | */ | |
311 | ||
312 | return 0; | |
313 | } | |
314 | ||
315 | static struct class ib_class = { | |
316 | .name = "infiniband", | |
317 | .dev_release = ib_device_release, | |
318 | .dev_uevent = ib_device_uevent, | |
319 | }; | |
320 | ||
1da177e4 | 321 | /** |
459cc69f | 322 | * _ib_alloc_device - allocate an IB device struct |
1da177e4 LT |
323 | * @size:size of structure to allocate |
324 | * | |
325 | * Low-level drivers should use ib_alloc_device() to allocate &struct | |
326 | * ib_device. @size is the size of the structure to be allocated, | |
327 | * including any private data used by the low-level driver. | |
328 | * ib_dealloc_device() must be used to free structures allocated with | |
329 | * ib_alloc_device(). | |
330 | */ | |
459cc69f | 331 | struct ib_device *_ib_alloc_device(size_t size) |
1da177e4 | 332 | { |
55aeed06 JG |
333 | struct ib_device *device; |
334 | ||
335 | if (WARN_ON(size < sizeof(struct ib_device))) | |
336 | return NULL; | |
337 | ||
338 | device = kzalloc(size, GFP_KERNEL); | |
339 | if (!device) | |
340 | return NULL; | |
341 | ||
41eda65c LR |
342 | if (rdma_restrack_init(device)) { |
343 | kfree(device); | |
344 | return NULL; | |
345 | } | |
02d8883f | 346 | |
55aeed06 | 347 | device->dev.class = &ib_class; |
5f8f5499 PP |
348 | device->groups[0] = &ib_dev_attr_group; |
349 | device->dev.groups = device->groups; | |
55aeed06 JG |
350 | device_initialize(&device->dev); |
351 | ||
55aeed06 JG |
352 | INIT_LIST_HEAD(&device->event_handler_list); |
353 | spin_lock_init(&device->event_handler_lock); | |
0df91bb6 JG |
354 | /* |
355 | * client_data needs to be alloc because we don't want our mark to be | |
356 | * destroyed if the user stores NULL in the client data. | |
357 | */ | |
358 | xa_init_flags(&device->client_data, XA_FLAGS_ALLOC); | |
921eab11 | 359 | init_rwsem(&device->client_data_rwsem); |
55aeed06 | 360 | INIT_LIST_HEAD(&device->port_list); |
01b67117 | 361 | init_completion(&device->unreg_completion); |
1da177e4 | 362 | |
55aeed06 | 363 | return device; |
1da177e4 | 364 | } |
459cc69f | 365 | EXPORT_SYMBOL(_ib_alloc_device); |
1da177e4 LT |
366 | |
367 | /** | |
368 | * ib_dealloc_device - free an IB device struct | |
369 | * @device:structure to free | |
370 | * | |
371 | * Free a structure allocated with ib_alloc_device(). | |
372 | */ | |
373 | void ib_dealloc_device(struct ib_device *device) | |
374 | { | |
0df91bb6 | 375 | WARN_ON(!xa_empty(&device->client_data)); |
652432f3 | 376 | WARN_ON(refcount_read(&device->refcount)); |
0ad699c0 | 377 | rdma_restrack_clean(device); |
e155755e | 378 | /* Balances with device_initialize */ |
924b8900 | 379 | put_device(&device->dev); |
1da177e4 LT |
380 | } |
381 | EXPORT_SYMBOL(ib_dealloc_device); | |
382 | ||
921eab11 JG |
383 | /* |
384 | * add_client_context() and remove_client_context() must be safe against | |
385 | * parallel calls on the same device - registration/unregistration of both the | |
386 | * device and client can be occurring in parallel. | |
387 | * | |
388 | * The routines need to be a fence, any caller must not return until the add | |
389 | * or remove is fully completed. | |
390 | */ | |
391 | static int add_client_context(struct ib_device *device, | |
392 | struct ib_client *client) | |
1da177e4 | 393 | { |
921eab11 | 394 | int ret = 0; |
1da177e4 | 395 | |
6780c4fa | 396 | if (!device->kverbs_provider && !client->no_kverbs_req) |
921eab11 JG |
397 | return 0; |
398 | ||
399 | down_write(&device->client_data_rwsem); | |
400 | /* | |
401 | * Another caller to add_client_context got here first and has already | |
402 | * completely initialized context. | |
403 | */ | |
404 | if (xa_get_mark(&device->client_data, client->client_id, | |
405 | CLIENT_DATA_REGISTERED)) | |
406 | goto out; | |
407 | ||
408 | ret = xa_err(xa_store(&device->client_data, client->client_id, NULL, | |
409 | GFP_KERNEL)); | |
410 | if (ret) | |
411 | goto out; | |
412 | downgrade_write(&device->client_data_rwsem); | |
413 | if (client->add) | |
414 | client->add(device); | |
415 | ||
416 | /* Readers shall not see a client until add has been completed */ | |
417 | xa_set_mark(&device->client_data, client->client_id, | |
418 | CLIENT_DATA_REGISTERED); | |
419 | up_read(&device->client_data_rwsem); | |
420 | return 0; | |
421 | ||
422 | out: | |
423 | up_write(&device->client_data_rwsem); | |
424 | return ret; | |
425 | } | |
426 | ||
427 | static void remove_client_context(struct ib_device *device, | |
428 | unsigned int client_id) | |
429 | { | |
430 | struct ib_client *client; | |
431 | void *client_data; | |
6780c4fa | 432 | |
921eab11 JG |
433 | down_write(&device->client_data_rwsem); |
434 | if (!xa_get_mark(&device->client_data, client_id, | |
435 | CLIENT_DATA_REGISTERED)) { | |
436 | up_write(&device->client_data_rwsem); | |
437 | return; | |
438 | } | |
439 | client_data = xa_load(&device->client_data, client_id); | |
440 | xa_clear_mark(&device->client_data, client_id, CLIENT_DATA_REGISTERED); | |
441 | client = xa_load(&clients, client_id); | |
442 | downgrade_write(&device->client_data_rwsem); | |
1da177e4 | 443 | |
921eab11 JG |
444 | /* |
445 | * Notice we cannot be holding any exclusive locks when calling the | |
446 | * remove callback as the remove callback can recurse back into any | |
447 | * public functions in this module and thus try for any locks those | |
448 | * functions take. | |
449 | * | |
450 | * For this reason clients and drivers should not call the | |
451 | * unregistration functions will holdling any locks. | |
452 | * | |
453 | * It tempting to drop the client_data_rwsem too, but this is required | |
454 | * to ensure that unregister_client does not return until all clients | |
455 | * are completely unregistered, which is required to avoid module | |
456 | * unloading races. | |
457 | */ | |
458 | if (client->remove) | |
459 | client->remove(device, client_data); | |
460 | ||
461 | xa_erase(&device->client_data, client_id); | |
462 | up_read(&device->client_data_rwsem); | |
1da177e4 LT |
463 | } |
464 | ||
337877a4 IW |
465 | static int verify_immutable(const struct ib_device *dev, u8 port) |
466 | { | |
467 | return WARN_ON(!rdma_cap_ib_mad(dev, port) && | |
468 | rdma_max_mad_size(dev, port) != 0); | |
469 | } | |
470 | ||
7738613e | 471 | static int read_port_immutable(struct ib_device *device) |
5eb620c8 | 472 | { |
ea1075ed | 473 | unsigned int port; |
55aeed06 | 474 | int ret; |
7738613e IW |
475 | |
476 | /** | |
477 | * device->port_immutable is indexed directly by the port number to make | |
478 | * access to this data as efficient as possible. | |
479 | * | |
480 | * Therefore port_immutable is declared as a 1 based array with | |
481 | * potential empty slots at the beginning. | |
482 | */ | |
ea1075ed JG |
483 | device->port_immutable = |
484 | kcalloc(rdma_end_port(device) + 1, | |
485 | sizeof(*device->port_immutable), GFP_KERNEL); | |
7738613e | 486 | if (!device->port_immutable) |
55aeed06 | 487 | return -ENOMEM; |
5eb620c8 | 488 | |
ea1075ed | 489 | rdma_for_each_port (device, port) { |
3023a1e9 KH |
490 | ret = device->ops.get_port_immutable( |
491 | device, port, &device->port_immutable[port]); | |
5eb620c8 | 492 | if (ret) |
55aeed06 | 493 | return ret; |
337877a4 | 494 | |
55aeed06 JG |
495 | if (verify_immutable(device, port)) |
496 | return -EINVAL; | |
5eb620c8 | 497 | } |
55aeed06 | 498 | return 0; |
5eb620c8 YE |
499 | } |
500 | ||
9abb0d1b | 501 | void ib_get_device_fw_str(struct ib_device *dev, char *str) |
5fa76c20 | 502 | { |
3023a1e9 KH |
503 | if (dev->ops.get_dev_fw_str) |
504 | dev->ops.get_dev_fw_str(dev, str); | |
5fa76c20 IW |
505 | else |
506 | str[0] = '\0'; | |
507 | } | |
508 | EXPORT_SYMBOL(ib_get_device_fw_str); | |
509 | ||
d291f1a6 DJ |
510 | static int setup_port_pkey_list(struct ib_device *device) |
511 | { | |
512 | int i; | |
513 | ||
514 | /** | |
515 | * device->port_pkey_list is indexed directly by the port number, | |
516 | * Therefore it is declared as a 1 based array with potential empty | |
517 | * slots at the beginning. | |
518 | */ | |
519 | device->port_pkey_list = kcalloc(rdma_end_port(device) + 1, | |
520 | sizeof(*device->port_pkey_list), | |
521 | GFP_KERNEL); | |
522 | ||
523 | if (!device->port_pkey_list) | |
524 | return -ENOMEM; | |
525 | ||
526 | for (i = 0; i < (rdma_end_port(device) + 1); i++) { | |
527 | spin_lock_init(&device->port_pkey_list[i].list_lock); | |
528 | INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list); | |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
8f408ab6 DJ |
534 | static void ib_policy_change_task(struct work_struct *work) |
535 | { | |
536 | struct ib_device *dev; | |
0df91bb6 | 537 | unsigned long index; |
8f408ab6 | 538 | |
921eab11 | 539 | down_read(&devices_rwsem); |
0df91bb6 | 540 | xa_for_each_marked (&devices, index, dev, DEVICE_REGISTERED) { |
ea1075ed | 541 | unsigned int i; |
8f408ab6 | 542 | |
ea1075ed | 543 | rdma_for_each_port (dev, i) { |
8f408ab6 DJ |
544 | u64 sp; |
545 | int ret = ib_get_cached_subnet_prefix(dev, | |
546 | i, | |
547 | &sp); | |
548 | ||
549 | WARN_ONCE(ret, | |
550 | "ib_get_cached_subnet_prefix err: %d, this should never happen here\n", | |
551 | ret); | |
a750cfde DJ |
552 | if (!ret) |
553 | ib_security_cache_change(dev, i, sp); | |
8f408ab6 DJ |
554 | } |
555 | } | |
921eab11 | 556 | up_read(&devices_rwsem); |
8f408ab6 DJ |
557 | } |
558 | ||
559 | static int ib_security_change(struct notifier_block *nb, unsigned long event, | |
560 | void *lsm_data) | |
561 | { | |
562 | if (event != LSM_POLICY_CHANGE) | |
563 | return NOTIFY_DONE; | |
564 | ||
565 | schedule_work(&ib_policy_change_work); | |
c66f6741 | 566 | ib_mad_agent_security_change(); |
8f408ab6 DJ |
567 | |
568 | return NOTIFY_OK; | |
569 | } | |
570 | ||
0df91bb6 JG |
571 | /* |
572 | * Assign the unique string device name and the unique device index. | |
ecc82c53 | 573 | */ |
0df91bb6 | 574 | static int assign_name(struct ib_device *device, const char *name) |
ecc82c53 | 575 | { |
0df91bb6 JG |
576 | static u32 last_id; |
577 | int ret; | |
ecc82c53 | 578 | |
921eab11 | 579 | down_write(&devices_rwsem); |
0df91bb6 JG |
580 | /* Assign a unique name to the device */ |
581 | if (strchr(name, '%')) | |
582 | ret = alloc_name(device, name); | |
583 | else | |
584 | ret = dev_set_name(&device->dev, name); | |
585 | if (ret) | |
586 | goto out; | |
587 | ||
588 | if (__ib_device_get_by_name(dev_name(&device->dev))) { | |
589 | ret = -ENFILE; | |
590 | goto out; | |
591 | } | |
592 | strlcpy(device->name, dev_name(&device->dev), IB_DEVICE_NAME_MAX); | |
ecc82c53 | 593 | |
0df91bb6 JG |
594 | /* Cyclically allocate a user visible ID for the device */ |
595 | device->index = last_id; | |
596 | ret = xa_alloc(&devices, &device->index, INT_MAX, device, GFP_KERNEL); | |
597 | if (ret == -ENOSPC) { | |
598 | device->index = 0; | |
599 | ret = xa_alloc(&devices, &device->index, INT_MAX, device, | |
600 | GFP_KERNEL); | |
ecc82c53 | 601 | } |
0df91bb6 JG |
602 | if (ret) |
603 | goto out; | |
604 | last_id = device->index + 1; | |
605 | ||
606 | ret = 0; | |
921eab11 | 607 | |
0df91bb6 | 608 | out: |
921eab11 | 609 | up_write(&devices_rwsem); |
0df91bb6 JG |
610 | return ret; |
611 | } | |
612 | ||
613 | static void release_name(struct ib_device *device) | |
614 | { | |
921eab11 | 615 | down_write(&devices_rwsem); |
0df91bb6 | 616 | xa_erase(&devices, device->index); |
921eab11 | 617 | up_write(&devices_rwsem); |
ecc82c53 LR |
618 | } |
619 | ||
548cb4fb | 620 | static void setup_dma_device(struct ib_device *device) |
1da177e4 | 621 | { |
99db9494 BVA |
622 | struct device *parent = device->dev.parent; |
623 | ||
0957c29f BVA |
624 | WARN_ON_ONCE(device->dma_device); |
625 | if (device->dev.dma_ops) { | |
626 | /* | |
627 | * The caller provided custom DMA operations. Copy the | |
628 | * DMA-related fields that are used by e.g. dma_alloc_coherent() | |
629 | * into device->dev. | |
630 | */ | |
631 | device->dma_device = &device->dev; | |
02ee9da3 BVA |
632 | if (!device->dev.dma_mask) { |
633 | if (parent) | |
634 | device->dev.dma_mask = parent->dma_mask; | |
635 | else | |
636 | WARN_ON_ONCE(true); | |
637 | } | |
638 | if (!device->dev.coherent_dma_mask) { | |
639 | if (parent) | |
640 | device->dev.coherent_dma_mask = | |
641 | parent->coherent_dma_mask; | |
642 | else | |
643 | WARN_ON_ONCE(true); | |
644 | } | |
0957c29f BVA |
645 | } else { |
646 | /* | |
647 | * The caller did not provide custom DMA operations. Use the | |
648 | * DMA mapping operations of the parent device. | |
649 | */ | |
02ee9da3 | 650 | WARN_ON_ONCE(!parent); |
0957c29f BVA |
651 | device->dma_device = parent; |
652 | } | |
548cb4fb | 653 | } |
1da177e4 | 654 | |
921eab11 JG |
655 | /* |
656 | * setup_device() allocates memory and sets up data that requires calling the | |
657 | * device ops, this is the only reason these actions are not done during | |
658 | * ib_alloc_device. It is undone by ib_dealloc_device(). | |
659 | */ | |
548cb4fb PP |
660 | static int setup_device(struct ib_device *device) |
661 | { | |
662 | struct ib_udata uhw = {.outlen = 0, .inlen = 0}; | |
663 | int ret; | |
1da177e4 | 664 | |
921eab11 JG |
665 | setup_dma_device(device); |
666 | ||
548cb4fb PP |
667 | ret = ib_device_check_mandatory(device); |
668 | if (ret) | |
669 | return ret; | |
1da177e4 | 670 | |
7738613e | 671 | ret = read_port_immutable(device); |
5eb620c8 | 672 | if (ret) { |
43c7c851 JG |
673 | dev_warn(&device->dev, |
674 | "Couldn't create per port immutable data\n"); | |
548cb4fb PP |
675 | return ret; |
676 | } | |
677 | ||
678 | memset(&device->attrs, 0, sizeof(device->attrs)); | |
3023a1e9 | 679 | ret = device->ops.query_device(device, &device->attrs, &uhw); |
548cb4fb PP |
680 | if (ret) { |
681 | dev_warn(&device->dev, | |
682 | "Couldn't query the device attributes\n"); | |
d45f89d5 | 683 | return ret; |
5eb620c8 YE |
684 | } |
685 | ||
d291f1a6 DJ |
686 | ret = setup_port_pkey_list(device); |
687 | if (ret) { | |
43c7c851 | 688 | dev_warn(&device->dev, "Couldn't create per port_pkey_list\n"); |
b34b269a | 689 | return ret; |
03db3a2d | 690 | } |
548cb4fb | 691 | |
d45f89d5 | 692 | return 0; |
548cb4fb PP |
693 | } |
694 | ||
921eab11 JG |
695 | static void disable_device(struct ib_device *device) |
696 | { | |
697 | struct ib_client *client; | |
698 | ||
699 | WARN_ON(!refcount_read(&device->refcount)); | |
700 | ||
701 | down_write(&devices_rwsem); | |
702 | xa_clear_mark(&devices, device->index, DEVICE_REGISTERED); | |
703 | up_write(&devices_rwsem); | |
704 | ||
705 | down_read(&clients_rwsem); | |
706 | list_for_each_entry_reverse(client, &client_list, list) | |
707 | remove_client_context(device, client->client_id); | |
708 | up_read(&clients_rwsem); | |
709 | ||
710 | /* Pairs with refcount_set in enable_device */ | |
711 | ib_device_put(device); | |
712 | wait_for_completion(&device->unreg_completion); | |
713 | } | |
714 | ||
715 | /* | |
716 | * An enabled device is visible to all clients and to all the public facing | |
717 | * APIs that return a device pointer. | |
718 | */ | |
719 | static int enable_device(struct ib_device *device) | |
720 | { | |
721 | struct ib_client *client; | |
722 | unsigned long index; | |
723 | int ret; | |
724 | ||
725 | refcount_set(&device->refcount, 1); | |
726 | down_write(&devices_rwsem); | |
727 | xa_set_mark(&devices, device->index, DEVICE_REGISTERED); | |
728 | up_write(&devices_rwsem); | |
729 | ||
730 | down_read(&clients_rwsem); | |
731 | xa_for_each_marked (&clients, index, client, CLIENT_REGISTERED) { | |
732 | ret = add_client_context(device, client); | |
733 | if (ret) { | |
734 | up_read(&clients_rwsem); | |
735 | disable_device(device); | |
736 | return ret; | |
737 | } | |
738 | } | |
739 | up_read(&clients_rwsem); | |
740 | return 0; | |
741 | } | |
742 | ||
548cb4fb PP |
743 | /** |
744 | * ib_register_device - Register an IB device with IB core | |
745 | * @device:Device to register | |
746 | * | |
747 | * Low-level drivers use ib_register_device() to register their | |
748 | * devices with the IB core. All registered clients will receive a | |
749 | * callback for each device that is added. @device must be allocated | |
750 | * with ib_alloc_device(). | |
751 | */ | |
ea4baf7f | 752 | int ib_register_device(struct ib_device *device, const char *name) |
548cb4fb PP |
753 | { |
754 | int ret; | |
548cb4fb | 755 | |
0df91bb6 JG |
756 | ret = assign_name(device, name); |
757 | if (ret) | |
921eab11 | 758 | return ret; |
548cb4fb PP |
759 | |
760 | ret = setup_device(device); | |
761 | if (ret) | |
921eab11 | 762 | goto out; |
03db3a2d | 763 | |
d45f89d5 JG |
764 | ret = ib_cache_setup_one(device); |
765 | if (ret) { | |
766 | dev_warn(&device->dev, | |
767 | "Couldn't set up InfiniBand P_Key/GID cache\n"); | |
921eab11 | 768 | goto out; |
d45f89d5 JG |
769 | } |
770 | ||
7527a7b1 | 771 | ib_device_register_rdmacg(device); |
3e153a93 | 772 | |
5f8f5499 PP |
773 | ret = device_add(&device->dev); |
774 | if (ret) | |
775 | goto cg_cleanup; | |
776 | ||
ea4baf7f | 777 | ret = ib_device_register_sysfs(device); |
1da177e4 | 778 | if (ret) { |
43c7c851 JG |
779 | dev_warn(&device->dev, |
780 | "Couldn't register device with driver model\n"); | |
5f8f5499 | 781 | goto dev_cleanup; |
1da177e4 LT |
782 | } |
783 | ||
921eab11 JG |
784 | ret = enable_device(device); |
785 | if (ret) | |
786 | goto sysfs_cleanup; | |
1da177e4 | 787 | |
4be3a4fa PP |
788 | return 0; |
789 | ||
921eab11 JG |
790 | sysfs_cleanup: |
791 | ib_device_unregister_sysfs(device); | |
5f8f5499 PP |
792 | dev_cleanup: |
793 | device_del(&device->dev); | |
2fb4f4ea PP |
794 | cg_cleanup: |
795 | ib_device_unregister_rdmacg(device); | |
d45f89d5 | 796 | ib_cache_cleanup_one(device); |
5aa44bb9 | 797 | out: |
921eab11 | 798 | release_name(device); |
1da177e4 LT |
799 | return ret; |
800 | } | |
801 | EXPORT_SYMBOL(ib_register_device); | |
802 | ||
803 | /** | |
804 | * ib_unregister_device - Unregister an IB device | |
805 | * @device:Device to unregister | |
806 | * | |
807 | * Unregister an IB device. All clients will receive a remove callback. | |
808 | */ | |
809 | void ib_unregister_device(struct ib_device *device) | |
810 | { | |
921eab11 | 811 | disable_device(device); |
9206dff1 | 812 | ib_device_unregister_sysfs(device); |
5f8f5499 | 813 | device_del(&device->dev); |
c715a395 | 814 | ib_device_unregister_rdmacg(device); |
03db3a2d | 815 | ib_cache_cleanup_one(device); |
921eab11 | 816 | release_name(device); |
1da177e4 LT |
817 | } |
818 | EXPORT_SYMBOL(ib_unregister_device); | |
819 | ||
e59178d8 JG |
820 | static int assign_client_id(struct ib_client *client) |
821 | { | |
822 | int ret; | |
823 | ||
921eab11 | 824 | down_write(&clients_rwsem); |
e59178d8 JG |
825 | /* |
826 | * The add/remove callbacks must be called in FIFO/LIFO order. To | |
827 | * achieve this we assign client_ids so they are sorted in | |
828 | * registration order, and retain a linked list we can reverse iterate | |
829 | * to get the LIFO order. The extra linked list can go away if xarray | |
830 | * learns to reverse iterate. | |
831 | */ | |
832 | if (list_empty(&client_list)) | |
833 | client->client_id = 0; | |
834 | else | |
835 | client->client_id = | |
836 | list_last_entry(&client_list, struct ib_client, list) | |
837 | ->client_id; | |
838 | ret = xa_alloc(&clients, &client->client_id, INT_MAX, client, | |
839 | GFP_KERNEL); | |
840 | if (ret) | |
841 | goto out; | |
842 | ||
921eab11 JG |
843 | xa_set_mark(&clients, client->client_id, CLIENT_REGISTERED); |
844 | list_add_tail(&client->list, &client_list); | |
845 | ||
e59178d8 | 846 | out: |
921eab11 | 847 | up_write(&clients_rwsem); |
e59178d8 JG |
848 | return ret; |
849 | } | |
850 | ||
1da177e4 LT |
851 | /** |
852 | * ib_register_client - Register an IB client | |
853 | * @client:Client to register | |
854 | * | |
855 | * Upper level users of the IB drivers can use ib_register_client() to | |
856 | * register callbacks for IB device addition and removal. When an IB | |
857 | * device is added, each registered client's add method will be called | |
858 | * (in the order the clients were registered), and when a device is | |
859 | * removed, each client's remove method will be called (in the reverse | |
860 | * order that clients were registered). In addition, when | |
861 | * ib_register_client() is called, the client will receive an add | |
862 | * callback for all devices already registered. | |
863 | */ | |
864 | int ib_register_client(struct ib_client *client) | |
865 | { | |
866 | struct ib_device *device; | |
0df91bb6 | 867 | unsigned long index; |
e59178d8 | 868 | int ret; |
1da177e4 | 869 | |
e59178d8 | 870 | ret = assign_client_id(client); |
921eab11 | 871 | if (ret) |
e59178d8 | 872 | return ret; |
1da177e4 | 873 | |
921eab11 JG |
874 | down_read(&devices_rwsem); |
875 | xa_for_each_marked (&devices, index, device, DEVICE_REGISTERED) { | |
876 | ret = add_client_context(device, client); | |
877 | if (ret) { | |
878 | up_read(&devices_rwsem); | |
879 | ib_unregister_client(client); | |
880 | return ret; | |
881 | } | |
882 | } | |
883 | up_read(&devices_rwsem); | |
1da177e4 LT |
884 | return 0; |
885 | } | |
886 | EXPORT_SYMBOL(ib_register_client); | |
887 | ||
888 | /** | |
889 | * ib_unregister_client - Unregister an IB client | |
890 | * @client:Client to unregister | |
891 | * | |
892 | * Upper level users use ib_unregister_client() to remove their client | |
893 | * registration. When ib_unregister_client() is called, the client | |
894 | * will receive a remove callback for each IB device still registered. | |
921eab11 JG |
895 | * |
896 | * This is a full fence, once it returns no client callbacks will be called, | |
897 | * or are running in another thread. | |
1da177e4 LT |
898 | */ |
899 | void ib_unregister_client(struct ib_client *client) | |
900 | { | |
1da177e4 | 901 | struct ib_device *device; |
0df91bb6 | 902 | unsigned long index; |
1da177e4 | 903 | |
921eab11 | 904 | down_write(&clients_rwsem); |
e59178d8 | 905 | xa_clear_mark(&clients, client->client_id, CLIENT_REGISTERED); |
921eab11 JG |
906 | up_write(&clients_rwsem); |
907 | /* | |
908 | * Every device still known must be serialized to make sure we are | |
909 | * done with the client callbacks before we return. | |
910 | */ | |
911 | down_read(&devices_rwsem); | |
912 | xa_for_each (&devices, index, device) | |
913 | remove_client_context(device, client->client_id); | |
914 | up_read(&devices_rwsem); | |
1da177e4 | 915 | |
921eab11 | 916 | down_write(&clients_rwsem); |
e59178d8 JG |
917 | list_del(&client->list); |
918 | xa_erase(&clients, client->client_id); | |
921eab11 | 919 | up_write(&clients_rwsem); |
1da177e4 LT |
920 | } |
921 | EXPORT_SYMBOL(ib_unregister_client); | |
922 | ||
1da177e4 | 923 | /** |
9cd330d3 | 924 | * ib_set_client_data - Set IB client context |
1da177e4 LT |
925 | * @device:Device to set context for |
926 | * @client:Client to set context for | |
927 | * @data:Context to set | |
928 | * | |
0df91bb6 JG |
929 | * ib_set_client_data() sets client context data that can be retrieved with |
930 | * ib_get_client_data(). This can only be called while the client is | |
931 | * registered to the device, once the ib_client remove() callback returns this | |
932 | * cannot be called. | |
1da177e4 LT |
933 | */ |
934 | void ib_set_client_data(struct ib_device *device, struct ib_client *client, | |
935 | void *data) | |
936 | { | |
0df91bb6 | 937 | void *rc; |
1da177e4 | 938 | |
0df91bb6 JG |
939 | if (WARN_ON(IS_ERR(data))) |
940 | data = NULL; | |
1da177e4 | 941 | |
0df91bb6 JG |
942 | rc = xa_store(&device->client_data, client->client_id, data, |
943 | GFP_KERNEL); | |
944 | WARN_ON(xa_is_err(rc)); | |
1da177e4 LT |
945 | } |
946 | EXPORT_SYMBOL(ib_set_client_data); | |
947 | ||
948 | /** | |
949 | * ib_register_event_handler - Register an IB event handler | |
950 | * @event_handler:Handler to register | |
951 | * | |
952 | * ib_register_event_handler() registers an event handler that will be | |
953 | * called back when asynchronous IB events occur (as defined in | |
954 | * chapter 11 of the InfiniBand Architecture Specification). This | |
955 | * callback may occur in interrupt context. | |
956 | */ | |
dcc9881e | 957 | void ib_register_event_handler(struct ib_event_handler *event_handler) |
1da177e4 LT |
958 | { |
959 | unsigned long flags; | |
960 | ||
961 | spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); | |
962 | list_add_tail(&event_handler->list, | |
963 | &event_handler->device->event_handler_list); | |
964 | spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); | |
1da177e4 LT |
965 | } |
966 | EXPORT_SYMBOL(ib_register_event_handler); | |
967 | ||
968 | /** | |
969 | * ib_unregister_event_handler - Unregister an event handler | |
970 | * @event_handler:Handler to unregister | |
971 | * | |
972 | * Unregister an event handler registered with | |
973 | * ib_register_event_handler(). | |
974 | */ | |
dcc9881e | 975 | void ib_unregister_event_handler(struct ib_event_handler *event_handler) |
1da177e4 LT |
976 | { |
977 | unsigned long flags; | |
978 | ||
979 | spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); | |
980 | list_del(&event_handler->list); | |
981 | spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); | |
1da177e4 LT |
982 | } |
983 | EXPORT_SYMBOL(ib_unregister_event_handler); | |
984 | ||
985 | /** | |
986 | * ib_dispatch_event - Dispatch an asynchronous event | |
987 | * @event:Event to dispatch | |
988 | * | |
989 | * Low-level drivers must call ib_dispatch_event() to dispatch the | |
990 | * event to all registered event handlers when an asynchronous event | |
991 | * occurs. | |
992 | */ | |
993 | void ib_dispatch_event(struct ib_event *event) | |
994 | { | |
995 | unsigned long flags; | |
996 | struct ib_event_handler *handler; | |
997 | ||
998 | spin_lock_irqsave(&event->device->event_handler_lock, flags); | |
999 | ||
1000 | list_for_each_entry(handler, &event->device->event_handler_list, list) | |
1001 | handler->handler(handler, event); | |
1002 | ||
1003 | spin_unlock_irqrestore(&event->device->event_handler_lock, flags); | |
1004 | } | |
1005 | EXPORT_SYMBOL(ib_dispatch_event); | |
1006 | ||
1da177e4 LT |
1007 | /** |
1008 | * ib_query_port - Query IB port attributes | |
1009 | * @device:Device to query | |
1010 | * @port_num:Port number to query | |
1011 | * @port_attr:Port attributes | |
1012 | * | |
1013 | * ib_query_port() returns the attributes of a port through the | |
1014 | * @port_attr pointer. | |
1015 | */ | |
1016 | int ib_query_port(struct ib_device *device, | |
1017 | u8 port_num, | |
1018 | struct ib_port_attr *port_attr) | |
1019 | { | |
fad61ad4 EC |
1020 | union ib_gid gid; |
1021 | int err; | |
1022 | ||
24dc831b | 1023 | if (!rdma_is_port_valid(device, port_num)) |
116c0074 RD |
1024 | return -EINVAL; |
1025 | ||
fad61ad4 | 1026 | memset(port_attr, 0, sizeof(*port_attr)); |
3023a1e9 | 1027 | err = device->ops.query_port(device, port_num, port_attr); |
fad61ad4 EC |
1028 | if (err || port_attr->subnet_prefix) |
1029 | return err; | |
1030 | ||
d7012467 EC |
1031 | if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND) |
1032 | return 0; | |
1033 | ||
3023a1e9 | 1034 | err = device->ops.query_gid(device, port_num, 0, &gid); |
fad61ad4 EC |
1035 | if (err) |
1036 | return err; | |
1037 | ||
1038 | port_attr->subnet_prefix = be64_to_cpu(gid.global.subnet_prefix); | |
1039 | return 0; | |
1da177e4 LT |
1040 | } |
1041 | EXPORT_SYMBOL(ib_query_port); | |
1042 | ||
03db3a2d MB |
1043 | /** |
1044 | * ib_enum_roce_netdev - enumerate all RoCE ports | |
1045 | * @ib_dev : IB device we want to query | |
1046 | * @filter: Should we call the callback? | |
1047 | * @filter_cookie: Cookie passed to filter | |
1048 | * @cb: Callback to call for each found RoCE ports | |
1049 | * @cookie: Cookie passed back to the callback | |
1050 | * | |
1051 | * Enumerates all of the physical RoCE ports of ib_dev | |
1052 | * which are related to netdevice and calls callback() on each | |
1053 | * device for which filter() function returns non zero. | |
1054 | */ | |
1055 | void ib_enum_roce_netdev(struct ib_device *ib_dev, | |
1056 | roce_netdev_filter filter, | |
1057 | void *filter_cookie, | |
1058 | roce_netdev_callback cb, | |
1059 | void *cookie) | |
1060 | { | |
ea1075ed | 1061 | unsigned int port; |
03db3a2d | 1062 | |
ea1075ed | 1063 | rdma_for_each_port (ib_dev, port) |
03db3a2d MB |
1064 | if (rdma_protocol_roce(ib_dev, port)) { |
1065 | struct net_device *idev = NULL; | |
1066 | ||
3023a1e9 KH |
1067 | if (ib_dev->ops.get_netdev) |
1068 | idev = ib_dev->ops.get_netdev(ib_dev, port); | |
03db3a2d MB |
1069 | |
1070 | if (idev && | |
1071 | idev->reg_state >= NETREG_UNREGISTERED) { | |
1072 | dev_put(idev); | |
1073 | idev = NULL; | |
1074 | } | |
1075 | ||
1076 | if (filter(ib_dev, port, idev, filter_cookie)) | |
1077 | cb(ib_dev, port, idev, cookie); | |
1078 | ||
1079 | if (idev) | |
1080 | dev_put(idev); | |
1081 | } | |
1082 | } | |
1083 | ||
1084 | /** | |
1085 | * ib_enum_all_roce_netdevs - enumerate all RoCE devices | |
1086 | * @filter: Should we call the callback? | |
1087 | * @filter_cookie: Cookie passed to filter | |
1088 | * @cb: Callback to call for each found RoCE ports | |
1089 | * @cookie: Cookie passed back to the callback | |
1090 | * | |
1091 | * Enumerates all RoCE devices' physical ports which are related | |
1092 | * to netdevices and calls callback() on each device for which | |
1093 | * filter() function returns non zero. | |
1094 | */ | |
1095 | void ib_enum_all_roce_netdevs(roce_netdev_filter filter, | |
1096 | void *filter_cookie, | |
1097 | roce_netdev_callback cb, | |
1098 | void *cookie) | |
1099 | { | |
1100 | struct ib_device *dev; | |
0df91bb6 | 1101 | unsigned long index; |
03db3a2d | 1102 | |
921eab11 | 1103 | down_read(&devices_rwsem); |
0df91bb6 | 1104 | xa_for_each_marked (&devices, index, dev, DEVICE_REGISTERED) |
03db3a2d | 1105 | ib_enum_roce_netdev(dev, filter, filter_cookie, cb, cookie); |
921eab11 | 1106 | up_read(&devices_rwsem); |
8030c835 LR |
1107 | } |
1108 | ||
1109 | /** | |
1110 | * ib_enum_all_devs - enumerate all ib_devices | |
1111 | * @cb: Callback to call for each found ib_device | |
1112 | * | |
1113 | * Enumerates all ib_devices and calls callback() on each device. | |
1114 | */ | |
1115 | int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, | |
1116 | struct netlink_callback *cb) | |
1117 | { | |
0df91bb6 | 1118 | unsigned long index; |
8030c835 LR |
1119 | struct ib_device *dev; |
1120 | unsigned int idx = 0; | |
1121 | int ret = 0; | |
1122 | ||
921eab11 | 1123 | down_read(&devices_rwsem); |
0df91bb6 | 1124 | xa_for_each_marked (&devices, index, dev, DEVICE_REGISTERED) { |
8030c835 LR |
1125 | ret = nldev_cb(dev, skb, cb, idx); |
1126 | if (ret) | |
1127 | break; | |
1128 | idx++; | |
1129 | } | |
921eab11 | 1130 | up_read(&devices_rwsem); |
8030c835 | 1131 | return ret; |
03db3a2d MB |
1132 | } |
1133 | ||
1da177e4 LT |
1134 | /** |
1135 | * ib_query_pkey - Get P_Key table entry | |
1136 | * @device:Device to query | |
1137 | * @port_num:Port number to query | |
1138 | * @index:P_Key table index to query | |
1139 | * @pkey:Returned P_Key | |
1140 | * | |
1141 | * ib_query_pkey() fetches the specified P_Key table entry. | |
1142 | */ | |
1143 | int ib_query_pkey(struct ib_device *device, | |
1144 | u8 port_num, u16 index, u16 *pkey) | |
1145 | { | |
9af3f5cf YS |
1146 | if (!rdma_is_port_valid(device, port_num)) |
1147 | return -EINVAL; | |
1148 | ||
3023a1e9 | 1149 | return device->ops.query_pkey(device, port_num, index, pkey); |
1da177e4 LT |
1150 | } |
1151 | EXPORT_SYMBOL(ib_query_pkey); | |
1152 | ||
1153 | /** | |
1154 | * ib_modify_device - Change IB device attributes | |
1155 | * @device:Device to modify | |
1156 | * @device_modify_mask:Mask of attributes to change | |
1157 | * @device_modify:New attribute values | |
1158 | * | |
1159 | * ib_modify_device() changes a device's attributes as specified by | |
1160 | * the @device_modify_mask and @device_modify structure. | |
1161 | */ | |
1162 | int ib_modify_device(struct ib_device *device, | |
1163 | int device_modify_mask, | |
1164 | struct ib_device_modify *device_modify) | |
1165 | { | |
3023a1e9 | 1166 | if (!device->ops.modify_device) |
10e1b54b BVA |
1167 | return -ENOSYS; |
1168 | ||
3023a1e9 KH |
1169 | return device->ops.modify_device(device, device_modify_mask, |
1170 | device_modify); | |
1da177e4 LT |
1171 | } |
1172 | EXPORT_SYMBOL(ib_modify_device); | |
1173 | ||
1174 | /** | |
1175 | * ib_modify_port - Modifies the attributes for the specified port. | |
1176 | * @device: The device to modify. | |
1177 | * @port_num: The number of the port to modify. | |
1178 | * @port_modify_mask: Mask used to specify which attributes of the port | |
1179 | * to change. | |
1180 | * @port_modify: New attribute values for the port. | |
1181 | * | |
1182 | * ib_modify_port() changes a port's attributes as specified by the | |
1183 | * @port_modify_mask and @port_modify structure. | |
1184 | */ | |
1185 | int ib_modify_port(struct ib_device *device, | |
1186 | u8 port_num, int port_modify_mask, | |
1187 | struct ib_port_modify *port_modify) | |
1188 | { | |
61e0962d | 1189 | int rc; |
10e1b54b | 1190 | |
24dc831b | 1191 | if (!rdma_is_port_valid(device, port_num)) |
116c0074 RD |
1192 | return -EINVAL; |
1193 | ||
3023a1e9 KH |
1194 | if (device->ops.modify_port) |
1195 | rc = device->ops.modify_port(device, port_num, | |
1196 | port_modify_mask, | |
1197 | port_modify); | |
61e0962d SX |
1198 | else |
1199 | rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS; | |
1200 | return rc; | |
1da177e4 LT |
1201 | } |
1202 | EXPORT_SYMBOL(ib_modify_port); | |
1203 | ||
5eb620c8 YE |
1204 | /** |
1205 | * ib_find_gid - Returns the port number and GID table index where | |
dbb12562 | 1206 | * a specified GID value occurs. Its searches only for IB link layer. |
5eb620c8 YE |
1207 | * @device: The device to query. |
1208 | * @gid: The GID value to search for. | |
1209 | * @port_num: The port number of the device where the GID value was found. | |
1210 | * @index: The index into the GID table where the GID was found. This | |
1211 | * parameter may be NULL. | |
1212 | */ | |
1213 | int ib_find_gid(struct ib_device *device, union ib_gid *gid, | |
b26c4a11 | 1214 | u8 *port_num, u16 *index) |
5eb620c8 YE |
1215 | { |
1216 | union ib_gid tmp_gid; | |
ea1075ed JG |
1217 | unsigned int port; |
1218 | int ret, i; | |
5eb620c8 | 1219 | |
ea1075ed | 1220 | rdma_for_each_port (device, port) { |
22d24f75 | 1221 | if (!rdma_protocol_ib(device, port)) |
b39ffa1d MB |
1222 | continue; |
1223 | ||
7738613e | 1224 | for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { |
1dfce294 | 1225 | ret = rdma_query_gid(device, port, i, &tmp_gid); |
5eb620c8 YE |
1226 | if (ret) |
1227 | return ret; | |
1228 | if (!memcmp(&tmp_gid, gid, sizeof *gid)) { | |
1229 | *port_num = port; | |
1230 | if (index) | |
1231 | *index = i; | |
1232 | return 0; | |
1233 | } | |
1234 | } | |
1235 | } | |
1236 | ||
1237 | return -ENOENT; | |
1238 | } | |
1239 | EXPORT_SYMBOL(ib_find_gid); | |
1240 | ||
1241 | /** | |
1242 | * ib_find_pkey - Returns the PKey table index where a specified | |
1243 | * PKey value occurs. | |
1244 | * @device: The device to query. | |
1245 | * @port_num: The port number of the device to search for the PKey. | |
1246 | * @pkey: The PKey value to search for. | |
1247 | * @index: The index into the PKey table where the PKey was found. | |
1248 | */ | |
1249 | int ib_find_pkey(struct ib_device *device, | |
1250 | u8 port_num, u16 pkey, u16 *index) | |
1251 | { | |
1252 | int ret, i; | |
1253 | u16 tmp_pkey; | |
ff7166c4 | 1254 | int partial_ix = -1; |
5eb620c8 | 1255 | |
7738613e | 1256 | for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) { |
5eb620c8 YE |
1257 | ret = ib_query_pkey(device, port_num, i, &tmp_pkey); |
1258 | if (ret) | |
1259 | return ret; | |
36026ecc | 1260 | if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { |
ff7166c4 JM |
1261 | /* if there is full-member pkey take it.*/ |
1262 | if (tmp_pkey & 0x8000) { | |
1263 | *index = i; | |
1264 | return 0; | |
1265 | } | |
1266 | if (partial_ix < 0) | |
1267 | partial_ix = i; | |
5eb620c8 YE |
1268 | } |
1269 | } | |
1270 | ||
ff7166c4 JM |
1271 | /*no full-member, if exists take the limited*/ |
1272 | if (partial_ix >= 0) { | |
1273 | *index = partial_ix; | |
1274 | return 0; | |
1275 | } | |
5eb620c8 YE |
1276 | return -ENOENT; |
1277 | } | |
1278 | EXPORT_SYMBOL(ib_find_pkey); | |
1279 | ||
9268f72d YK |
1280 | /** |
1281 | * ib_get_net_dev_by_params() - Return the appropriate net_dev | |
1282 | * for a received CM request | |
1283 | * @dev: An RDMA device on which the request has been received. | |
1284 | * @port: Port number on the RDMA device. | |
1285 | * @pkey: The Pkey the request came on. | |
1286 | * @gid: A GID that the net_dev uses to communicate. | |
1287 | * @addr: Contains the IP address that the request specified as its | |
1288 | * destination. | |
921eab11 | 1289 | * |
9268f72d YK |
1290 | */ |
1291 | struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, | |
1292 | u8 port, | |
1293 | u16 pkey, | |
1294 | const union ib_gid *gid, | |
1295 | const struct sockaddr *addr) | |
1296 | { | |
1297 | struct net_device *net_dev = NULL; | |
0df91bb6 JG |
1298 | unsigned long index; |
1299 | void *client_data; | |
9268f72d YK |
1300 | |
1301 | if (!rdma_protocol_ib(dev, port)) | |
1302 | return NULL; | |
1303 | ||
921eab11 JG |
1304 | /* |
1305 | * Holding the read side guarantees that the client will not become | |
1306 | * unregistered while we are calling get_net_dev_by_params() | |
1307 | */ | |
1308 | down_read(&dev->client_data_rwsem); | |
0df91bb6 JG |
1309 | xan_for_each_marked (&dev->client_data, index, client_data, |
1310 | CLIENT_DATA_REGISTERED) { | |
1311 | struct ib_client *client = xa_load(&clients, index); | |
9268f72d | 1312 | |
0df91bb6 | 1313 | if (!client || !client->get_net_dev_by_params) |
9268f72d YK |
1314 | continue; |
1315 | ||
0df91bb6 JG |
1316 | net_dev = client->get_net_dev_by_params(dev, port, pkey, gid, |
1317 | addr, client_data); | |
1318 | if (net_dev) | |
1319 | break; | |
9268f72d | 1320 | } |
921eab11 | 1321 | up_read(&dev->client_data_rwsem); |
9268f72d YK |
1322 | |
1323 | return net_dev; | |
1324 | } | |
1325 | EXPORT_SYMBOL(ib_get_net_dev_by_params); | |
1326 | ||
521ed0d9 KH |
1327 | void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops) |
1328 | { | |
3023a1e9 | 1329 | struct ib_device_ops *dev_ops = &dev->ops; |
521ed0d9 KH |
1330 | #define SET_DEVICE_OP(ptr, name) \ |
1331 | do { \ | |
1332 | if (ops->name) \ | |
1333 | if (!((ptr)->name)) \ | |
1334 | (ptr)->name = ops->name; \ | |
1335 | } while (0) | |
1336 | ||
30471d4b LR |
1337 | #define SET_OBJ_SIZE(ptr, name) SET_DEVICE_OP(ptr, size_##name) |
1338 | ||
3023a1e9 | 1339 | SET_DEVICE_OP(dev_ops, add_gid); |
2f1927b0 | 1340 | SET_DEVICE_OP(dev_ops, advise_mr); |
3023a1e9 KH |
1341 | SET_DEVICE_OP(dev_ops, alloc_dm); |
1342 | SET_DEVICE_OP(dev_ops, alloc_fmr); | |
1343 | SET_DEVICE_OP(dev_ops, alloc_hw_stats); | |
1344 | SET_DEVICE_OP(dev_ops, alloc_mr); | |
1345 | SET_DEVICE_OP(dev_ops, alloc_mw); | |
1346 | SET_DEVICE_OP(dev_ops, alloc_pd); | |
1347 | SET_DEVICE_OP(dev_ops, alloc_rdma_netdev); | |
1348 | SET_DEVICE_OP(dev_ops, alloc_ucontext); | |
1349 | SET_DEVICE_OP(dev_ops, alloc_xrcd); | |
1350 | SET_DEVICE_OP(dev_ops, attach_mcast); | |
1351 | SET_DEVICE_OP(dev_ops, check_mr_status); | |
1352 | SET_DEVICE_OP(dev_ops, create_ah); | |
1353 | SET_DEVICE_OP(dev_ops, create_counters); | |
1354 | SET_DEVICE_OP(dev_ops, create_cq); | |
1355 | SET_DEVICE_OP(dev_ops, create_flow); | |
1356 | SET_DEVICE_OP(dev_ops, create_flow_action_esp); | |
1357 | SET_DEVICE_OP(dev_ops, create_qp); | |
1358 | SET_DEVICE_OP(dev_ops, create_rwq_ind_table); | |
1359 | SET_DEVICE_OP(dev_ops, create_srq); | |
1360 | SET_DEVICE_OP(dev_ops, create_wq); | |
1361 | SET_DEVICE_OP(dev_ops, dealloc_dm); | |
1362 | SET_DEVICE_OP(dev_ops, dealloc_fmr); | |
1363 | SET_DEVICE_OP(dev_ops, dealloc_mw); | |
1364 | SET_DEVICE_OP(dev_ops, dealloc_pd); | |
1365 | SET_DEVICE_OP(dev_ops, dealloc_ucontext); | |
1366 | SET_DEVICE_OP(dev_ops, dealloc_xrcd); | |
1367 | SET_DEVICE_OP(dev_ops, del_gid); | |
1368 | SET_DEVICE_OP(dev_ops, dereg_mr); | |
1369 | SET_DEVICE_OP(dev_ops, destroy_ah); | |
1370 | SET_DEVICE_OP(dev_ops, destroy_counters); | |
1371 | SET_DEVICE_OP(dev_ops, destroy_cq); | |
1372 | SET_DEVICE_OP(dev_ops, destroy_flow); | |
1373 | SET_DEVICE_OP(dev_ops, destroy_flow_action); | |
1374 | SET_DEVICE_OP(dev_ops, destroy_qp); | |
1375 | SET_DEVICE_OP(dev_ops, destroy_rwq_ind_table); | |
1376 | SET_DEVICE_OP(dev_ops, destroy_srq); | |
1377 | SET_DEVICE_OP(dev_ops, destroy_wq); | |
1378 | SET_DEVICE_OP(dev_ops, detach_mcast); | |
1379 | SET_DEVICE_OP(dev_ops, disassociate_ucontext); | |
1380 | SET_DEVICE_OP(dev_ops, drain_rq); | |
1381 | SET_DEVICE_OP(dev_ops, drain_sq); | |
02da3750 | 1382 | SET_DEVICE_OP(dev_ops, fill_res_entry); |
3023a1e9 KH |
1383 | SET_DEVICE_OP(dev_ops, get_dev_fw_str); |
1384 | SET_DEVICE_OP(dev_ops, get_dma_mr); | |
1385 | SET_DEVICE_OP(dev_ops, get_hw_stats); | |
1386 | SET_DEVICE_OP(dev_ops, get_link_layer); | |
1387 | SET_DEVICE_OP(dev_ops, get_netdev); | |
1388 | SET_DEVICE_OP(dev_ops, get_port_immutable); | |
1389 | SET_DEVICE_OP(dev_ops, get_vector_affinity); | |
1390 | SET_DEVICE_OP(dev_ops, get_vf_config); | |
1391 | SET_DEVICE_OP(dev_ops, get_vf_stats); | |
ea4baf7f | 1392 | SET_DEVICE_OP(dev_ops, init_port); |
3023a1e9 KH |
1393 | SET_DEVICE_OP(dev_ops, map_mr_sg); |
1394 | SET_DEVICE_OP(dev_ops, map_phys_fmr); | |
1395 | SET_DEVICE_OP(dev_ops, mmap); | |
1396 | SET_DEVICE_OP(dev_ops, modify_ah); | |
1397 | SET_DEVICE_OP(dev_ops, modify_cq); | |
1398 | SET_DEVICE_OP(dev_ops, modify_device); | |
1399 | SET_DEVICE_OP(dev_ops, modify_flow_action_esp); | |
1400 | SET_DEVICE_OP(dev_ops, modify_port); | |
1401 | SET_DEVICE_OP(dev_ops, modify_qp); | |
1402 | SET_DEVICE_OP(dev_ops, modify_srq); | |
1403 | SET_DEVICE_OP(dev_ops, modify_wq); | |
1404 | SET_DEVICE_OP(dev_ops, peek_cq); | |
1405 | SET_DEVICE_OP(dev_ops, poll_cq); | |
1406 | SET_DEVICE_OP(dev_ops, post_recv); | |
1407 | SET_DEVICE_OP(dev_ops, post_send); | |
1408 | SET_DEVICE_OP(dev_ops, post_srq_recv); | |
1409 | SET_DEVICE_OP(dev_ops, process_mad); | |
1410 | SET_DEVICE_OP(dev_ops, query_ah); | |
1411 | SET_DEVICE_OP(dev_ops, query_device); | |
1412 | SET_DEVICE_OP(dev_ops, query_gid); | |
1413 | SET_DEVICE_OP(dev_ops, query_pkey); | |
1414 | SET_DEVICE_OP(dev_ops, query_port); | |
1415 | SET_DEVICE_OP(dev_ops, query_qp); | |
1416 | SET_DEVICE_OP(dev_ops, query_srq); | |
1417 | SET_DEVICE_OP(dev_ops, rdma_netdev_get_params); | |
1418 | SET_DEVICE_OP(dev_ops, read_counters); | |
1419 | SET_DEVICE_OP(dev_ops, reg_dm_mr); | |
1420 | SET_DEVICE_OP(dev_ops, reg_user_mr); | |
1421 | SET_DEVICE_OP(dev_ops, req_ncomp_notif); | |
1422 | SET_DEVICE_OP(dev_ops, req_notify_cq); | |
1423 | SET_DEVICE_OP(dev_ops, rereg_user_mr); | |
1424 | SET_DEVICE_OP(dev_ops, resize_cq); | |
1425 | SET_DEVICE_OP(dev_ops, set_vf_guid); | |
1426 | SET_DEVICE_OP(dev_ops, set_vf_link_state); | |
1427 | SET_DEVICE_OP(dev_ops, unmap_fmr); | |
21a428a0 LR |
1428 | |
1429 | SET_OBJ_SIZE(dev_ops, ib_pd); | |
521ed0d9 KH |
1430 | } |
1431 | EXPORT_SYMBOL(ib_set_device_ops); | |
1432 | ||
d0e312fe | 1433 | static const struct rdma_nl_cbs ibnl_ls_cb_table[RDMA_NL_LS_NUM_OPS] = { |
735c631a | 1434 | [RDMA_NL_LS_OP_RESOLVE] = { |
647c75ac | 1435 | .doit = ib_nl_handle_resolve_resp, |
e3a2b93d LR |
1436 | .flags = RDMA_NL_ADMIN_PERM, |
1437 | }, | |
735c631a | 1438 | [RDMA_NL_LS_OP_SET_TIMEOUT] = { |
647c75ac | 1439 | .doit = ib_nl_handle_set_timeout, |
e3a2b93d LR |
1440 | .flags = RDMA_NL_ADMIN_PERM, |
1441 | }, | |
ae43f828 | 1442 | [RDMA_NL_LS_OP_IP_RESOLVE] = { |
647c75ac | 1443 | .doit = ib_nl_handle_ip_res_resp, |
e3a2b93d LR |
1444 | .flags = RDMA_NL_ADMIN_PERM, |
1445 | }, | |
735c631a MB |
1446 | }; |
1447 | ||
1da177e4 LT |
1448 | static int __init ib_core_init(void) |
1449 | { | |
1450 | int ret; | |
1451 | ||
f0626710 TH |
1452 | ib_wq = alloc_workqueue("infiniband", 0, 0); |
1453 | if (!ib_wq) | |
1454 | return -ENOMEM; | |
1455 | ||
14d3a3b2 | 1456 | ib_comp_wq = alloc_workqueue("ib-comp-wq", |
b7363e67 | 1457 | WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_SYSFS, 0); |
14d3a3b2 CH |
1458 | if (!ib_comp_wq) { |
1459 | ret = -ENOMEM; | |
1460 | goto err; | |
1461 | } | |
1462 | ||
f794809a JM |
1463 | ib_comp_unbound_wq = |
1464 | alloc_workqueue("ib-comp-unb-wq", | |
1465 | WQ_UNBOUND | WQ_HIGHPRI | WQ_MEM_RECLAIM | | |
1466 | WQ_SYSFS, WQ_UNBOUND_MAX_ACTIVE); | |
1467 | if (!ib_comp_unbound_wq) { | |
1468 | ret = -ENOMEM; | |
1469 | goto err_comp; | |
1470 | } | |
1471 | ||
55aeed06 | 1472 | ret = class_register(&ib_class); |
fd75c789 | 1473 | if (ret) { |
aba25a3e | 1474 | pr_warn("Couldn't create InfiniBand device class\n"); |
f794809a | 1475 | goto err_comp_unbound; |
fd75c789 | 1476 | } |
1da177e4 | 1477 | |
c9901724 | 1478 | ret = rdma_nl_init(); |
b2cbae2c | 1479 | if (ret) { |
c9901724 | 1480 | pr_warn("Couldn't init IB netlink interface: err %d\n", ret); |
b2cbae2c RD |
1481 | goto err_sysfs; |
1482 | } | |
1483 | ||
e3f20f02 LR |
1484 | ret = addr_init(); |
1485 | if (ret) { | |
1486 | pr_warn("Could't init IB address resolution\n"); | |
1487 | goto err_ibnl; | |
1488 | } | |
1489 | ||
4c2cb422 MB |
1490 | ret = ib_mad_init(); |
1491 | if (ret) { | |
1492 | pr_warn("Couldn't init IB MAD\n"); | |
1493 | goto err_addr; | |
1494 | } | |
1495 | ||
c2e49c92 MB |
1496 | ret = ib_sa_init(); |
1497 | if (ret) { | |
1498 | pr_warn("Couldn't init SA\n"); | |
1499 | goto err_mad; | |
1500 | } | |
1501 | ||
8f408ab6 DJ |
1502 | ret = register_lsm_notifier(&ibdev_lsm_nb); |
1503 | if (ret) { | |
1504 | pr_warn("Couldn't register LSM notifier. ret %d\n", ret); | |
c9901724 | 1505 | goto err_sa; |
8f408ab6 DJ |
1506 | } |
1507 | ||
6c80b41a | 1508 | nldev_init(); |
c9901724 | 1509 | rdma_nl_register(RDMA_NL_LS, ibnl_ls_cb_table); |
5ef8c0c1 | 1510 | roce_gid_mgmt_init(); |
1da177e4 | 1511 | |
fd75c789 NM |
1512 | return 0; |
1513 | ||
735c631a MB |
1514 | err_sa: |
1515 | ib_sa_cleanup(); | |
c2e49c92 MB |
1516 | err_mad: |
1517 | ib_mad_cleanup(); | |
4c2cb422 MB |
1518 | err_addr: |
1519 | addr_cleanup(); | |
e3f20f02 | 1520 | err_ibnl: |
c9901724 | 1521 | rdma_nl_exit(); |
fd75c789 | 1522 | err_sysfs: |
55aeed06 | 1523 | class_unregister(&ib_class); |
f794809a JM |
1524 | err_comp_unbound: |
1525 | destroy_workqueue(ib_comp_unbound_wq); | |
14d3a3b2 CH |
1526 | err_comp: |
1527 | destroy_workqueue(ib_comp_wq); | |
fd75c789 NM |
1528 | err: |
1529 | destroy_workqueue(ib_wq); | |
1da177e4 LT |
1530 | return ret; |
1531 | } | |
1532 | ||
1533 | static void __exit ib_core_cleanup(void) | |
1534 | { | |
5ef8c0c1 | 1535 | roce_gid_mgmt_cleanup(); |
6c80b41a | 1536 | nldev_exit(); |
c9901724 LR |
1537 | rdma_nl_unregister(RDMA_NL_LS); |
1538 | unregister_lsm_notifier(&ibdev_lsm_nb); | |
c2e49c92 | 1539 | ib_sa_cleanup(); |
4c2cb422 | 1540 | ib_mad_cleanup(); |
e3f20f02 | 1541 | addr_cleanup(); |
c9901724 | 1542 | rdma_nl_exit(); |
55aeed06 | 1543 | class_unregister(&ib_class); |
f794809a | 1544 | destroy_workqueue(ib_comp_unbound_wq); |
14d3a3b2 | 1545 | destroy_workqueue(ib_comp_wq); |
f7c6a7b5 | 1546 | /* Make sure that any pending umem accounting work is done. */ |
f0626710 | 1547 | destroy_workqueue(ib_wq); |
e59178d8 | 1548 | WARN_ON(!xa_empty(&clients)); |
0df91bb6 | 1549 | WARN_ON(!xa_empty(&devices)); |
1da177e4 LT |
1550 | } |
1551 | ||
e3bf14bd JG |
1552 | MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_LS, 4); |
1553 | ||
a9cd1a67 | 1554 | subsys_initcall(ib_core_init); |
1da177e4 | 1555 | module_exit(ib_core_cleanup); |