Commit | Line | Data |
---|---|---|
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" | |
48 | ||
49 | MODULE_AUTHOR("Roland Dreier"); | |
50 | MODULE_DESCRIPTION("core kernel InfiniBand API"); | |
51 | MODULE_LICENSE("Dual BSD/GPL"); | |
52 | ||
14d3a3b2 | 53 | struct workqueue_struct *ib_comp_wq; |
f794809a | 54 | struct workqueue_struct *ib_comp_unbound_wq; |
f0626710 TH |
55 | struct workqueue_struct *ib_wq; |
56 | EXPORT_SYMBOL_GPL(ib_wq); | |
57 | ||
921eab11 JG |
58 | /* |
59 | * Each of the three rwsem locks (devices, clients, client_data) protects the | |
60 | * xarray of the same name. Specifically it allows the caller to assert that | |
61 | * the MARK will/will not be changing under the lock, and for devices and | |
62 | * clients, that the value in the xarray is still a valid pointer. Change of | |
63 | * the MARK is linked to the object state, so holding the lock and testing the | |
64 | * MARK also asserts that the contained object is in a certain state. | |
65 | * | |
66 | * This is used to build a two stage register/unregister flow where objects | |
67 | * can continue to be in the xarray even though they are still in progress to | |
68 | * register/unregister. | |
69 | * | |
70 | * The xarray itself provides additional locking, and restartable iteration, | |
71 | * which is also relied on. | |
72 | * | |
73 | * Locks should not be nested, with the exception of client_data, which is | |
74 | * allowed to nest under the read side of the other two locks. | |
75 | * | |
76 | * The devices_rwsem also protects the device name list, any change or | |
77 | * assignment of device name must also hold the write side to guarantee unique | |
78 | * names. | |
79 | */ | |
80 | ||
0df91bb6 JG |
81 | /* |
82 | * devices contains devices that have had their names assigned. The | |
83 | * devices may not be registered. Users that care about the registration | |
84 | * status need to call ib_device_try_get() on the device to ensure it is | |
85 | * registered, and keep it registered, for the required duration. | |
86 | * | |
87 | */ | |
88 | static DEFINE_XARRAY_FLAGS(devices, XA_FLAGS_ALLOC); | |
921eab11 | 89 | static DECLARE_RWSEM(devices_rwsem); |
0df91bb6 JG |
90 | #define DEVICE_REGISTERED XA_MARK_1 |
91 | ||
1da177e4 | 92 | static LIST_HEAD(client_list); |
e59178d8 JG |
93 | #define CLIENT_REGISTERED XA_MARK_1 |
94 | static DEFINE_XARRAY_FLAGS(clients, XA_FLAGS_ALLOC); | |
921eab11 | 95 | static DECLARE_RWSEM(clients_rwsem); |
1da177e4 LT |
96 | |
97 | /* | |
0df91bb6 JG |
98 | * If client_data is registered then the corresponding client must also still |
99 | * be registered. | |
100 | */ | |
101 | #define CLIENT_DATA_REGISTERED XA_MARK_1 | |
102 | /* | |
103 | * xarray has this behavior where it won't iterate over NULL values stored in | |
104 | * allocated arrays. So we need our own iterator to see all values stored in | |
105 | * the array. This does the same thing as xa_for_each except that it also | |
106 | * returns NULL valued entries if the array is allocating. Simplified to only | |
107 | * work on simple xarrays. | |
108 | */ | |
109 | static void *xan_find_marked(struct xarray *xa, unsigned long *indexp, | |
110 | xa_mark_t filter) | |
111 | { | |
112 | XA_STATE(xas, xa, *indexp); | |
113 | void *entry; | |
114 | ||
115 | rcu_read_lock(); | |
116 | do { | |
117 | entry = xas_find_marked(&xas, ULONG_MAX, filter); | |
118 | if (xa_is_zero(entry)) | |
119 | break; | |
120 | } while (xas_retry(&xas, entry)); | |
121 | rcu_read_unlock(); | |
122 | ||
123 | if (entry) { | |
124 | *indexp = xas.xa_index; | |
125 | if (xa_is_zero(entry)) | |
126 | return NULL; | |
127 | return entry; | |
128 | } | |
129 | return XA_ERROR(-ENOENT); | |
130 | } | |
131 | #define xan_for_each_marked(xa, index, entry, filter) \ | |
132 | for (index = 0, entry = xan_find_marked(xa, &(index), filter); \ | |
133 | !xa_is_err(entry); \ | |
134 | (index)++, entry = xan_find_marked(xa, &(index), filter)) | |
135 | ||
8f408ab6 DJ |
136 | static int ib_security_change(struct notifier_block *nb, unsigned long event, |
137 | void *lsm_data); | |
138 | static void ib_policy_change_task(struct work_struct *work); | |
139 | static DECLARE_WORK(ib_policy_change_work, ib_policy_change_task); | |
140 | ||
141 | static struct notifier_block ibdev_lsm_nb = { | |
142 | .notifier_call = ib_security_change, | |
143 | }; | |
1da177e4 LT |
144 | |
145 | static int ib_device_check_mandatory(struct ib_device *device) | |
146 | { | |
3023a1e9 | 147 | #define IB_MANDATORY_FUNC(x) { offsetof(struct ib_device_ops, x), #x } |
1da177e4 LT |
148 | static const struct { |
149 | size_t offset; | |
150 | char *name; | |
151 | } mandatory_table[] = { | |
152 | IB_MANDATORY_FUNC(query_device), | |
153 | IB_MANDATORY_FUNC(query_port), | |
154 | IB_MANDATORY_FUNC(query_pkey), | |
1da177e4 LT |
155 | IB_MANDATORY_FUNC(alloc_pd), |
156 | IB_MANDATORY_FUNC(dealloc_pd), | |
1da177e4 LT |
157 | IB_MANDATORY_FUNC(create_qp), |
158 | IB_MANDATORY_FUNC(modify_qp), | |
159 | IB_MANDATORY_FUNC(destroy_qp), | |
160 | IB_MANDATORY_FUNC(post_send), | |
161 | IB_MANDATORY_FUNC(post_recv), | |
162 | IB_MANDATORY_FUNC(create_cq), | |
163 | IB_MANDATORY_FUNC(destroy_cq), | |
164 | IB_MANDATORY_FUNC(poll_cq), | |
165 | IB_MANDATORY_FUNC(req_notify_cq), | |
166 | IB_MANDATORY_FUNC(get_dma_mr), | |
7738613e IW |
167 | IB_MANDATORY_FUNC(dereg_mr), |
168 | IB_MANDATORY_FUNC(get_port_immutable) | |
1da177e4 LT |
169 | }; |
170 | int i; | |
171 | ||
6780c4fa | 172 | device->kverbs_provider = true; |
9a6b090c | 173 | for (i = 0; i < ARRAY_SIZE(mandatory_table); ++i) { |
3023a1e9 KH |
174 | if (!*(void **) ((void *) &device->ops + |
175 | mandatory_table[i].offset)) { | |
6780c4fa GP |
176 | device->kverbs_provider = false; |
177 | break; | |
1da177e4 LT |
178 | } |
179 | } | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
f8978bd9 | 184 | /* |
01b67117 PP |
185 | * Caller must perform ib_device_put() to return the device reference count |
186 | * when ib_device_get_by_index() returns valid device pointer. | |
f8978bd9 LR |
187 | */ |
188 | struct ib_device *ib_device_get_by_index(u32 index) | |
189 | { | |
190 | struct ib_device *device; | |
191 | ||
921eab11 | 192 | down_read(&devices_rwsem); |
0df91bb6 | 193 | device = xa_load(&devices, index); |
01b67117 | 194 | if (device) { |
d79af724 | 195 | if (!ib_device_try_get(device)) |
01b67117 PP |
196 | device = NULL; |
197 | } | |
921eab11 | 198 | up_read(&devices_rwsem); |
f8978bd9 LR |
199 | return device; |
200 | } | |
201 | ||
d79af724 JG |
202 | /** |
203 | * ib_device_put - Release IB device reference | |
204 | * @device: device whose reference to be released | |
205 | * | |
206 | * ib_device_put() releases reference to the IB device to allow it to be | |
207 | * unregistered and eventually free. | |
208 | */ | |
01b67117 PP |
209 | void ib_device_put(struct ib_device *device) |
210 | { | |
211 | if (refcount_dec_and_test(&device->refcount)) | |
212 | complete(&device->unreg_completion); | |
213 | } | |
d79af724 | 214 | EXPORT_SYMBOL(ib_device_put); |
01b67117 | 215 | |
1da177e4 LT |
216 | static struct ib_device *__ib_device_get_by_name(const char *name) |
217 | { | |
218 | struct ib_device *device; | |
0df91bb6 | 219 | unsigned long index; |
1da177e4 | 220 | |
0df91bb6 | 221 | xa_for_each (&devices, index, device) |
896de009 | 222 | if (!strcmp(name, dev_name(&device->dev))) |
1da177e4 LT |
223 | return device; |
224 | ||
225 | return NULL; | |
226 | } | |
227 | ||
d21943dd LR |
228 | int ib_device_rename(struct ib_device *ibdev, const char *name) |
229 | { | |
e3593b56 | 230 | int ret; |
d21943dd | 231 | |
921eab11 | 232 | down_write(&devices_rwsem); |
e3593b56 JG |
233 | if (!strcmp(name, dev_name(&ibdev->dev))) { |
234 | ret = 0; | |
235 | goto out; | |
236 | } | |
237 | ||
344684e6 JG |
238 | if (__ib_device_get_by_name(name)) { |
239 | ret = -EEXIST; | |
240 | goto out; | |
d21943dd LR |
241 | } |
242 | ||
243 | ret = device_rename(&ibdev->dev, name); | |
244 | if (ret) | |
245 | goto out; | |
246 | strlcpy(ibdev->name, name, IB_DEVICE_NAME_MAX); | |
247 | out: | |
921eab11 | 248 | up_write(&devices_rwsem); |
d21943dd LR |
249 | return ret; |
250 | } | |
251 | ||
e349f858 | 252 | static int alloc_name(struct ib_device *ibdev, const char *name) |
1da177e4 | 253 | { |
1da177e4 | 254 | struct ib_device *device; |
0df91bb6 | 255 | unsigned long index; |
3b88afd3 JG |
256 | struct ida inuse; |
257 | int rc; | |
1da177e4 LT |
258 | int i; |
259 | ||
921eab11 | 260 | lockdep_assert_held_exclusive(&devices_rwsem); |
3b88afd3 | 261 | ida_init(&inuse); |
0df91bb6 | 262 | xa_for_each (&devices, index, device) { |
e349f858 JG |
263 | char buf[IB_DEVICE_NAME_MAX]; |
264 | ||
896de009 | 265 | if (sscanf(dev_name(&device->dev), name, &i) != 1) |
1da177e4 | 266 | continue; |
3b88afd3 | 267 | if (i < 0 || i >= INT_MAX) |
1da177e4 LT |
268 | continue; |
269 | snprintf(buf, sizeof buf, name, i); | |
3b88afd3 JG |
270 | if (strcmp(buf, dev_name(&device->dev)) != 0) |
271 | continue; | |
272 | ||
273 | rc = ida_alloc_range(&inuse, i, i, GFP_KERNEL); | |
274 | if (rc < 0) | |
275 | goto out; | |
1da177e4 LT |
276 | } |
277 | ||
3b88afd3 JG |
278 | rc = ida_alloc(&inuse, GFP_KERNEL); |
279 | if (rc < 0) | |
280 | goto out; | |
1da177e4 | 281 | |
3b88afd3 JG |
282 | rc = dev_set_name(&ibdev->dev, name, rc); |
283 | out: | |
284 | ida_destroy(&inuse); | |
285 | return rc; | |
1da177e4 LT |
286 | } |
287 | ||
55aeed06 JG |
288 | static void ib_device_release(struct device *device) |
289 | { | |
290 | struct ib_device *dev = container_of(device, struct ib_device, dev); | |
291 | ||
652432f3 | 292 | WARN_ON(refcount_read(&dev->refcount)); |
d45f89d5 | 293 | ib_cache_release_one(dev); |
b34b269a JG |
294 | ib_security_release_port_pkey_list(dev); |
295 | kfree(dev->port_pkey_list); | |
d45f89d5 | 296 | kfree(dev->port_immutable); |
0df91bb6 | 297 | xa_destroy(&dev->client_data); |
55aeed06 JG |
298 | kfree(dev); |
299 | } | |
300 | ||
301 | static int ib_device_uevent(struct device *device, | |
302 | struct kobj_uevent_env *env) | |
303 | { | |
896de009 | 304 | if (add_uevent_var(env, "NAME=%s", dev_name(device))) |
55aeed06 JG |
305 | return -ENOMEM; |
306 | ||
307 | /* | |
308 | * It would be nice to pass the node GUID with the event... | |
309 | */ | |
310 | ||
311 | return 0; | |
312 | } | |
313 | ||
314 | static struct class ib_class = { | |
315 | .name = "infiniband", | |
316 | .dev_release = ib_device_release, | |
317 | .dev_uevent = ib_device_uevent, | |
318 | }; | |
319 | ||
1da177e4 | 320 | /** |
459cc69f | 321 | * _ib_alloc_device - allocate an IB device struct |
1da177e4 LT |
322 | * @size:size of structure to allocate |
323 | * | |
324 | * Low-level drivers should use ib_alloc_device() to allocate &struct | |
325 | * ib_device. @size is the size of the structure to be allocated, | |
326 | * including any private data used by the low-level driver. | |
327 | * ib_dealloc_device() must be used to free structures allocated with | |
328 | * ib_alloc_device(). | |
329 | */ | |
459cc69f | 330 | struct ib_device *_ib_alloc_device(size_t size) |
1da177e4 | 331 | { |
55aeed06 JG |
332 | struct ib_device *device; |
333 | ||
334 | if (WARN_ON(size < sizeof(struct ib_device))) | |
335 | return NULL; | |
336 | ||
337 | device = kzalloc(size, GFP_KERNEL); | |
338 | if (!device) | |
339 | return NULL; | |
340 | ||
0ad699c0 | 341 | rdma_restrack_init(device); |
02d8883f | 342 | |
55aeed06 JG |
343 | device->dev.class = &ib_class; |
344 | device_initialize(&device->dev); | |
345 | ||
55aeed06 JG |
346 | INIT_LIST_HEAD(&device->event_handler_list); |
347 | spin_lock_init(&device->event_handler_lock); | |
0df91bb6 JG |
348 | /* |
349 | * client_data needs to be alloc because we don't want our mark to be | |
350 | * destroyed if the user stores NULL in the client data. | |
351 | */ | |
352 | xa_init_flags(&device->client_data, XA_FLAGS_ALLOC); | |
921eab11 | 353 | init_rwsem(&device->client_data_rwsem); |
55aeed06 | 354 | INIT_LIST_HEAD(&device->port_list); |
01b67117 | 355 | init_completion(&device->unreg_completion); |
1da177e4 | 356 | |
55aeed06 | 357 | return device; |
1da177e4 | 358 | } |
459cc69f | 359 | EXPORT_SYMBOL(_ib_alloc_device); |
1da177e4 LT |
360 | |
361 | /** | |
362 | * ib_dealloc_device - free an IB device struct | |
363 | * @device:structure to free | |
364 | * | |
365 | * Free a structure allocated with ib_alloc_device(). | |
366 | */ | |
367 | void ib_dealloc_device(struct ib_device *device) | |
368 | { | |
0df91bb6 | 369 | WARN_ON(!xa_empty(&device->client_data)); |
652432f3 | 370 | WARN_ON(refcount_read(&device->refcount)); |
0ad699c0 | 371 | rdma_restrack_clean(device); |
e155755e | 372 | /* Balances with device_initialize */ |
924b8900 | 373 | put_device(&device->dev); |
1da177e4 LT |
374 | } |
375 | EXPORT_SYMBOL(ib_dealloc_device); | |
376 | ||
921eab11 JG |
377 | /* |
378 | * add_client_context() and remove_client_context() must be safe against | |
379 | * parallel calls on the same device - registration/unregistration of both the | |
380 | * device and client can be occurring in parallel. | |
381 | * | |
382 | * The routines need to be a fence, any caller must not return until the add | |
383 | * or remove is fully completed. | |
384 | */ | |
385 | static int add_client_context(struct ib_device *device, | |
386 | struct ib_client *client) | |
1da177e4 | 387 | { |
921eab11 | 388 | int ret = 0; |
1da177e4 | 389 | |
6780c4fa | 390 | if (!device->kverbs_provider && !client->no_kverbs_req) |
921eab11 JG |
391 | return 0; |
392 | ||
393 | down_write(&device->client_data_rwsem); | |
394 | /* | |
395 | * Another caller to add_client_context got here first and has already | |
396 | * completely initialized context. | |
397 | */ | |
398 | if (xa_get_mark(&device->client_data, client->client_id, | |
399 | CLIENT_DATA_REGISTERED)) | |
400 | goto out; | |
401 | ||
402 | ret = xa_err(xa_store(&device->client_data, client->client_id, NULL, | |
403 | GFP_KERNEL)); | |
404 | if (ret) | |
405 | goto out; | |
406 | downgrade_write(&device->client_data_rwsem); | |
407 | if (client->add) | |
408 | client->add(device); | |
409 | ||
410 | /* Readers shall not see a client until add has been completed */ | |
411 | xa_set_mark(&device->client_data, client->client_id, | |
412 | CLIENT_DATA_REGISTERED); | |
413 | up_read(&device->client_data_rwsem); | |
414 | return 0; | |
415 | ||
416 | out: | |
417 | up_write(&device->client_data_rwsem); | |
418 | return ret; | |
419 | } | |
420 | ||
421 | static void remove_client_context(struct ib_device *device, | |
422 | unsigned int client_id) | |
423 | { | |
424 | struct ib_client *client; | |
425 | void *client_data; | |
6780c4fa | 426 | |
921eab11 JG |
427 | down_write(&device->client_data_rwsem); |
428 | if (!xa_get_mark(&device->client_data, client_id, | |
429 | CLIENT_DATA_REGISTERED)) { | |
430 | up_write(&device->client_data_rwsem); | |
431 | return; | |
432 | } | |
433 | client_data = xa_load(&device->client_data, client_id); | |
434 | xa_clear_mark(&device->client_data, client_id, CLIENT_DATA_REGISTERED); | |
435 | client = xa_load(&clients, client_id); | |
436 | downgrade_write(&device->client_data_rwsem); | |
1da177e4 | 437 | |
921eab11 JG |
438 | /* |
439 | * Notice we cannot be holding any exclusive locks when calling the | |
440 | * remove callback as the remove callback can recurse back into any | |
441 | * public functions in this module and thus try for any locks those | |
442 | * functions take. | |
443 | * | |
444 | * For this reason clients and drivers should not call the | |
445 | * unregistration functions will holdling any locks. | |
446 | * | |
447 | * It tempting to drop the client_data_rwsem too, but this is required | |
448 | * to ensure that unregister_client does not return until all clients | |
449 | * are completely unregistered, which is required to avoid module | |
450 | * unloading races. | |
451 | */ | |
452 | if (client->remove) | |
453 | client->remove(device, client_data); | |
454 | ||
455 | xa_erase(&device->client_data, client_id); | |
456 | up_read(&device->client_data_rwsem); | |
1da177e4 LT |
457 | } |
458 | ||
337877a4 IW |
459 | static int verify_immutable(const struct ib_device *dev, u8 port) |
460 | { | |
461 | return WARN_ON(!rdma_cap_ib_mad(dev, port) && | |
462 | rdma_max_mad_size(dev, port) != 0); | |
463 | } | |
464 | ||
7738613e | 465 | static int read_port_immutable(struct ib_device *device) |
5eb620c8 | 466 | { |
55aeed06 | 467 | int ret; |
7738613e IW |
468 | u8 start_port = rdma_start_port(device); |
469 | u8 end_port = rdma_end_port(device); | |
470 | u8 port; | |
471 | ||
472 | /** | |
473 | * device->port_immutable is indexed directly by the port number to make | |
474 | * access to this data as efficient as possible. | |
475 | * | |
476 | * Therefore port_immutable is declared as a 1 based array with | |
477 | * potential empty slots at the beginning. | |
478 | */ | |
6396bb22 KC |
479 | device->port_immutable = kcalloc(end_port + 1, |
480 | sizeof(*device->port_immutable), | |
7738613e IW |
481 | GFP_KERNEL); |
482 | if (!device->port_immutable) | |
55aeed06 | 483 | return -ENOMEM; |
5eb620c8 | 484 | |
7738613e | 485 | for (port = start_port; port <= end_port; ++port) { |
3023a1e9 KH |
486 | ret = device->ops.get_port_immutable( |
487 | device, port, &device->port_immutable[port]); | |
5eb620c8 | 488 | if (ret) |
55aeed06 | 489 | return ret; |
337877a4 | 490 | |
55aeed06 JG |
491 | if (verify_immutable(device, port)) |
492 | return -EINVAL; | |
5eb620c8 | 493 | } |
55aeed06 | 494 | return 0; |
5eb620c8 YE |
495 | } |
496 | ||
9abb0d1b | 497 | void ib_get_device_fw_str(struct ib_device *dev, char *str) |
5fa76c20 | 498 | { |
3023a1e9 KH |
499 | if (dev->ops.get_dev_fw_str) |
500 | dev->ops.get_dev_fw_str(dev, str); | |
5fa76c20 IW |
501 | else |
502 | str[0] = '\0'; | |
503 | } | |
504 | EXPORT_SYMBOL(ib_get_device_fw_str); | |
505 | ||
d291f1a6 DJ |
506 | static int setup_port_pkey_list(struct ib_device *device) |
507 | { | |
508 | int i; | |
509 | ||
510 | /** | |
511 | * device->port_pkey_list is indexed directly by the port number, | |
512 | * Therefore it is declared as a 1 based array with potential empty | |
513 | * slots at the beginning. | |
514 | */ | |
515 | device->port_pkey_list = kcalloc(rdma_end_port(device) + 1, | |
516 | sizeof(*device->port_pkey_list), | |
517 | GFP_KERNEL); | |
518 | ||
519 | if (!device->port_pkey_list) | |
520 | return -ENOMEM; | |
521 | ||
522 | for (i = 0; i < (rdma_end_port(device) + 1); i++) { | |
523 | spin_lock_init(&device->port_pkey_list[i].list_lock); | |
524 | INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list); | |
525 | } | |
526 | ||
527 | return 0; | |
528 | } | |
529 | ||
8f408ab6 DJ |
530 | static void ib_policy_change_task(struct work_struct *work) |
531 | { | |
532 | struct ib_device *dev; | |
0df91bb6 | 533 | unsigned long index; |
8f408ab6 | 534 | |
921eab11 | 535 | down_read(&devices_rwsem); |
0df91bb6 | 536 | xa_for_each_marked (&devices, index, dev, DEVICE_REGISTERED) { |
8f408ab6 DJ |
537 | int i; |
538 | ||
539 | for (i = rdma_start_port(dev); i <= rdma_end_port(dev); i++) { | |
540 | u64 sp; | |
541 | int ret = ib_get_cached_subnet_prefix(dev, | |
542 | i, | |
543 | &sp); | |
544 | ||
545 | WARN_ONCE(ret, | |
546 | "ib_get_cached_subnet_prefix err: %d, this should never happen here\n", | |
547 | ret); | |
a750cfde DJ |
548 | if (!ret) |
549 | ib_security_cache_change(dev, i, sp); | |
8f408ab6 DJ |
550 | } |
551 | } | |
921eab11 | 552 | up_read(&devices_rwsem); |
8f408ab6 DJ |
553 | } |
554 | ||
555 | static int ib_security_change(struct notifier_block *nb, unsigned long event, | |
556 | void *lsm_data) | |
557 | { | |
558 | if (event != LSM_POLICY_CHANGE) | |
559 | return NOTIFY_DONE; | |
560 | ||
561 | schedule_work(&ib_policy_change_work); | |
c66f6741 | 562 | ib_mad_agent_security_change(); |
8f408ab6 DJ |
563 | |
564 | return NOTIFY_OK; | |
565 | } | |
566 | ||
0df91bb6 JG |
567 | /* |
568 | * Assign the unique string device name and the unique device index. | |
ecc82c53 | 569 | */ |
0df91bb6 | 570 | static int assign_name(struct ib_device *device, const char *name) |
ecc82c53 | 571 | { |
0df91bb6 JG |
572 | static u32 last_id; |
573 | int ret; | |
ecc82c53 | 574 | |
921eab11 | 575 | down_write(&devices_rwsem); |
0df91bb6 JG |
576 | /* Assign a unique name to the device */ |
577 | if (strchr(name, '%')) | |
578 | ret = alloc_name(device, name); | |
579 | else | |
580 | ret = dev_set_name(&device->dev, name); | |
581 | if (ret) | |
582 | goto out; | |
583 | ||
584 | if (__ib_device_get_by_name(dev_name(&device->dev))) { | |
585 | ret = -ENFILE; | |
586 | goto out; | |
587 | } | |
588 | strlcpy(device->name, dev_name(&device->dev), IB_DEVICE_NAME_MAX); | |
ecc82c53 | 589 | |
0df91bb6 JG |
590 | /* Cyclically allocate a user visible ID for the device */ |
591 | device->index = last_id; | |
592 | ret = xa_alloc(&devices, &device->index, INT_MAX, device, GFP_KERNEL); | |
593 | if (ret == -ENOSPC) { | |
594 | device->index = 0; | |
595 | ret = xa_alloc(&devices, &device->index, INT_MAX, device, | |
596 | GFP_KERNEL); | |
ecc82c53 | 597 | } |
0df91bb6 JG |
598 | if (ret) |
599 | goto out; | |
600 | last_id = device->index + 1; | |
601 | ||
602 | ret = 0; | |
921eab11 | 603 | |
0df91bb6 | 604 | out: |
921eab11 | 605 | up_write(&devices_rwsem); |
0df91bb6 JG |
606 | return ret; |
607 | } | |
608 | ||
609 | static void release_name(struct ib_device *device) | |
610 | { | |
921eab11 | 611 | down_write(&devices_rwsem); |
0df91bb6 | 612 | xa_erase(&devices, device->index); |
921eab11 | 613 | up_write(&devices_rwsem); |
ecc82c53 LR |
614 | } |
615 | ||
548cb4fb | 616 | static void setup_dma_device(struct ib_device *device) |
1da177e4 | 617 | { |
99db9494 BVA |
618 | struct device *parent = device->dev.parent; |
619 | ||
0957c29f BVA |
620 | WARN_ON_ONCE(device->dma_device); |
621 | if (device->dev.dma_ops) { | |
622 | /* | |
623 | * The caller provided custom DMA operations. Copy the | |
624 | * DMA-related fields that are used by e.g. dma_alloc_coherent() | |
625 | * into device->dev. | |
626 | */ | |
627 | device->dma_device = &device->dev; | |
02ee9da3 BVA |
628 | if (!device->dev.dma_mask) { |
629 | if (parent) | |
630 | device->dev.dma_mask = parent->dma_mask; | |
631 | else | |
632 | WARN_ON_ONCE(true); | |
633 | } | |
634 | if (!device->dev.coherent_dma_mask) { | |
635 | if (parent) | |
636 | device->dev.coherent_dma_mask = | |
637 | parent->coherent_dma_mask; | |
638 | else | |
639 | WARN_ON_ONCE(true); | |
640 | } | |
0957c29f BVA |
641 | } else { |
642 | /* | |
643 | * The caller did not provide custom DMA operations. Use the | |
644 | * DMA mapping operations of the parent device. | |
645 | */ | |
02ee9da3 | 646 | WARN_ON_ONCE(!parent); |
0957c29f BVA |
647 | device->dma_device = parent; |
648 | } | |
548cb4fb | 649 | } |
1da177e4 | 650 | |
921eab11 JG |
651 | /* |
652 | * setup_device() allocates memory and sets up data that requires calling the | |
653 | * device ops, this is the only reason these actions are not done during | |
654 | * ib_alloc_device. It is undone by ib_dealloc_device(). | |
655 | */ | |
548cb4fb PP |
656 | static int setup_device(struct ib_device *device) |
657 | { | |
658 | struct ib_udata uhw = {.outlen = 0, .inlen = 0}; | |
659 | int ret; | |
1da177e4 | 660 | |
921eab11 JG |
661 | setup_dma_device(device); |
662 | ||
548cb4fb PP |
663 | ret = ib_device_check_mandatory(device); |
664 | if (ret) | |
665 | return ret; | |
1da177e4 | 666 | |
7738613e | 667 | ret = read_port_immutable(device); |
5eb620c8 | 668 | if (ret) { |
43c7c851 JG |
669 | dev_warn(&device->dev, |
670 | "Couldn't create per port immutable data\n"); | |
548cb4fb PP |
671 | return ret; |
672 | } | |
673 | ||
674 | memset(&device->attrs, 0, sizeof(device->attrs)); | |
3023a1e9 | 675 | ret = device->ops.query_device(device, &device->attrs, &uhw); |
548cb4fb PP |
676 | if (ret) { |
677 | dev_warn(&device->dev, | |
678 | "Couldn't query the device attributes\n"); | |
d45f89d5 | 679 | return ret; |
5eb620c8 YE |
680 | } |
681 | ||
d291f1a6 DJ |
682 | ret = setup_port_pkey_list(device); |
683 | if (ret) { | |
43c7c851 | 684 | dev_warn(&device->dev, "Couldn't create per port_pkey_list\n"); |
b34b269a | 685 | return ret; |
03db3a2d | 686 | } |
548cb4fb | 687 | |
d45f89d5 | 688 | return 0; |
548cb4fb PP |
689 | } |
690 | ||
921eab11 JG |
691 | static void disable_device(struct ib_device *device) |
692 | { | |
693 | struct ib_client *client; | |
694 | ||
695 | WARN_ON(!refcount_read(&device->refcount)); | |
696 | ||
697 | down_write(&devices_rwsem); | |
698 | xa_clear_mark(&devices, device->index, DEVICE_REGISTERED); | |
699 | up_write(&devices_rwsem); | |
700 | ||
701 | down_read(&clients_rwsem); | |
702 | list_for_each_entry_reverse(client, &client_list, list) | |
703 | remove_client_context(device, client->client_id); | |
704 | up_read(&clients_rwsem); | |
705 | ||
706 | /* Pairs with refcount_set in enable_device */ | |
707 | ib_device_put(device); | |
708 | wait_for_completion(&device->unreg_completion); | |
709 | } | |
710 | ||
711 | /* | |
712 | * An enabled device is visible to all clients and to all the public facing | |
713 | * APIs that return a device pointer. | |
714 | */ | |
715 | static int enable_device(struct ib_device *device) | |
716 | { | |
717 | struct ib_client *client; | |
718 | unsigned long index; | |
719 | int ret; | |
720 | ||
721 | refcount_set(&device->refcount, 1); | |
722 | down_write(&devices_rwsem); | |
723 | xa_set_mark(&devices, device->index, DEVICE_REGISTERED); | |
724 | up_write(&devices_rwsem); | |
725 | ||
726 | down_read(&clients_rwsem); | |
727 | xa_for_each_marked (&clients, index, client, CLIENT_REGISTERED) { | |
728 | ret = add_client_context(device, client); | |
729 | if (ret) { | |
730 | up_read(&clients_rwsem); | |
731 | disable_device(device); | |
732 | return ret; | |
733 | } | |
734 | } | |
735 | up_read(&clients_rwsem); | |
736 | return 0; | |
737 | } | |
738 | ||
548cb4fb PP |
739 | /** |
740 | * ib_register_device - Register an IB device with IB core | |
741 | * @device:Device to register | |
742 | * | |
743 | * Low-level drivers use ib_register_device() to register their | |
744 | * devices with the IB core. All registered clients will receive a | |
745 | * callback for each device that is added. @device must be allocated | |
746 | * with ib_alloc_device(). | |
747 | */ | |
ea4baf7f | 748 | int ib_register_device(struct ib_device *device, const char *name) |
548cb4fb PP |
749 | { |
750 | int ret; | |
548cb4fb | 751 | |
0df91bb6 JG |
752 | ret = assign_name(device, name); |
753 | if (ret) | |
921eab11 | 754 | return ret; |
548cb4fb PP |
755 | |
756 | ret = setup_device(device); | |
757 | if (ret) | |
921eab11 | 758 | goto out; |
03db3a2d | 759 | |
d45f89d5 JG |
760 | ret = ib_cache_setup_one(device); |
761 | if (ret) { | |
762 | dev_warn(&device->dev, | |
763 | "Couldn't set up InfiniBand P_Key/GID cache\n"); | |
921eab11 | 764 | goto out; |
d45f89d5 JG |
765 | } |
766 | ||
7527a7b1 | 767 | ib_device_register_rdmacg(device); |
3e153a93 | 768 | |
ea4baf7f | 769 | ret = ib_device_register_sysfs(device); |
1da177e4 | 770 | if (ret) { |
43c7c851 JG |
771 | dev_warn(&device->dev, |
772 | "Couldn't register device with driver model\n"); | |
2fb4f4ea | 773 | goto cg_cleanup; |
1da177e4 LT |
774 | } |
775 | ||
921eab11 JG |
776 | ret = enable_device(device); |
777 | if (ret) | |
778 | goto sysfs_cleanup; | |
1da177e4 | 779 | |
4be3a4fa PP |
780 | return 0; |
781 | ||
921eab11 JG |
782 | sysfs_cleanup: |
783 | ib_device_unregister_sysfs(device); | |
2fb4f4ea PP |
784 | cg_cleanup: |
785 | ib_device_unregister_rdmacg(device); | |
d45f89d5 | 786 | ib_cache_cleanup_one(device); |
5aa44bb9 | 787 | out: |
921eab11 | 788 | release_name(device); |
1da177e4 LT |
789 | return ret; |
790 | } | |
791 | EXPORT_SYMBOL(ib_register_device); | |
792 | ||
793 | /** | |
794 | * ib_unregister_device - Unregister an IB device | |
795 | * @device:Device to unregister | |
796 | * | |
797 | * Unregister an IB device. All clients will receive a remove callback. | |
798 | */ | |
799 | void ib_unregister_device(struct ib_device *device) | |
800 | { | |
921eab11 | 801 | disable_device(device); |
9206dff1 | 802 | ib_device_unregister_sysfs(device); |
c715a395 | 803 | ib_device_unregister_rdmacg(device); |
03db3a2d | 804 | ib_cache_cleanup_one(device); |
921eab11 | 805 | release_name(device); |
1da177e4 LT |
806 | } |
807 | EXPORT_SYMBOL(ib_unregister_device); | |
808 | ||
e59178d8 JG |
809 | static int assign_client_id(struct ib_client *client) |
810 | { | |
811 | int ret; | |
812 | ||
921eab11 | 813 | down_write(&clients_rwsem); |
e59178d8 JG |
814 | /* |
815 | * The add/remove callbacks must be called in FIFO/LIFO order. To | |
816 | * achieve this we assign client_ids so they are sorted in | |
817 | * registration order, and retain a linked list we can reverse iterate | |
818 | * to get the LIFO order. The extra linked list can go away if xarray | |
819 | * learns to reverse iterate. | |
820 | */ | |
821 | if (list_empty(&client_list)) | |
822 | client->client_id = 0; | |
823 | else | |
824 | client->client_id = | |
825 | list_last_entry(&client_list, struct ib_client, list) | |
826 | ->client_id; | |
827 | ret = xa_alloc(&clients, &client->client_id, INT_MAX, client, | |
828 | GFP_KERNEL); | |
829 | if (ret) | |
830 | goto out; | |
831 | ||
921eab11 JG |
832 | xa_set_mark(&clients, client->client_id, CLIENT_REGISTERED); |
833 | list_add_tail(&client->list, &client_list); | |
834 | ||
e59178d8 | 835 | out: |
921eab11 | 836 | up_write(&clients_rwsem); |
e59178d8 JG |
837 | return ret; |
838 | } | |
839 | ||
1da177e4 LT |
840 | /** |
841 | * ib_register_client - Register an IB client | |
842 | * @client:Client to register | |
843 | * | |
844 | * Upper level users of the IB drivers can use ib_register_client() to | |
845 | * register callbacks for IB device addition and removal. When an IB | |
846 | * device is added, each registered client's add method will be called | |
847 | * (in the order the clients were registered), and when a device is | |
848 | * removed, each client's remove method will be called (in the reverse | |
849 | * order that clients were registered). In addition, when | |
850 | * ib_register_client() is called, the client will receive an add | |
851 | * callback for all devices already registered. | |
852 | */ | |
853 | int ib_register_client(struct ib_client *client) | |
854 | { | |
855 | struct ib_device *device; | |
0df91bb6 | 856 | unsigned long index; |
e59178d8 | 857 | int ret; |
1da177e4 | 858 | |
e59178d8 | 859 | ret = assign_client_id(client); |
921eab11 | 860 | if (ret) |
e59178d8 | 861 | return ret; |
1da177e4 | 862 | |
921eab11 JG |
863 | down_read(&devices_rwsem); |
864 | xa_for_each_marked (&devices, index, device, DEVICE_REGISTERED) { | |
865 | ret = add_client_context(device, client); | |
866 | if (ret) { | |
867 | up_read(&devices_rwsem); | |
868 | ib_unregister_client(client); | |
869 | return ret; | |
870 | } | |
871 | } | |
872 | up_read(&devices_rwsem); | |
1da177e4 LT |
873 | return 0; |
874 | } | |
875 | EXPORT_SYMBOL(ib_register_client); | |
876 | ||
877 | /** | |
878 | * ib_unregister_client - Unregister an IB client | |
879 | * @client:Client to unregister | |
880 | * | |
881 | * Upper level users use ib_unregister_client() to remove their client | |
882 | * registration. When ib_unregister_client() is called, the client | |
883 | * will receive a remove callback for each IB device still registered. | |
921eab11 JG |
884 | * |
885 | * This is a full fence, once it returns no client callbacks will be called, | |
886 | * or are running in another thread. | |
1da177e4 LT |
887 | */ |
888 | void ib_unregister_client(struct ib_client *client) | |
889 | { | |
1da177e4 | 890 | struct ib_device *device; |
0df91bb6 | 891 | unsigned long index; |
1da177e4 | 892 | |
921eab11 | 893 | down_write(&clients_rwsem); |
e59178d8 | 894 | xa_clear_mark(&clients, client->client_id, CLIENT_REGISTERED); |
921eab11 JG |
895 | up_write(&clients_rwsem); |
896 | /* | |
897 | * Every device still known must be serialized to make sure we are | |
898 | * done with the client callbacks before we return. | |
899 | */ | |
900 | down_read(&devices_rwsem); | |
901 | xa_for_each (&devices, index, device) | |
902 | remove_client_context(device, client->client_id); | |
903 | up_read(&devices_rwsem); | |
1da177e4 | 904 | |
921eab11 | 905 | down_write(&clients_rwsem); |
e59178d8 JG |
906 | list_del(&client->list); |
907 | xa_erase(&clients, client->client_id); | |
921eab11 | 908 | up_write(&clients_rwsem); |
1da177e4 LT |
909 | } |
910 | EXPORT_SYMBOL(ib_unregister_client); | |
911 | ||
1da177e4 | 912 | /** |
9cd330d3 | 913 | * ib_set_client_data - Set IB client context |
1da177e4 LT |
914 | * @device:Device to set context for |
915 | * @client:Client to set context for | |
916 | * @data:Context to set | |
917 | * | |
0df91bb6 JG |
918 | * ib_set_client_data() sets client context data that can be retrieved with |
919 | * ib_get_client_data(). This can only be called while the client is | |
920 | * registered to the device, once the ib_client remove() callback returns this | |
921 | * cannot be called. | |
1da177e4 LT |
922 | */ |
923 | void ib_set_client_data(struct ib_device *device, struct ib_client *client, | |
924 | void *data) | |
925 | { | |
0df91bb6 | 926 | void *rc; |
1da177e4 | 927 | |
0df91bb6 JG |
928 | if (WARN_ON(IS_ERR(data))) |
929 | data = NULL; | |
1da177e4 | 930 | |
0df91bb6 JG |
931 | rc = xa_store(&device->client_data, client->client_id, data, |
932 | GFP_KERNEL); | |
933 | WARN_ON(xa_is_err(rc)); | |
1da177e4 LT |
934 | } |
935 | EXPORT_SYMBOL(ib_set_client_data); | |
936 | ||
937 | /** | |
938 | * ib_register_event_handler - Register an IB event handler | |
939 | * @event_handler:Handler to register | |
940 | * | |
941 | * ib_register_event_handler() registers an event handler that will be | |
942 | * called back when asynchronous IB events occur (as defined in | |
943 | * chapter 11 of the InfiniBand Architecture Specification). This | |
944 | * callback may occur in interrupt context. | |
945 | */ | |
dcc9881e | 946 | void ib_register_event_handler(struct ib_event_handler *event_handler) |
1da177e4 LT |
947 | { |
948 | unsigned long flags; | |
949 | ||
950 | spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); | |
951 | list_add_tail(&event_handler->list, | |
952 | &event_handler->device->event_handler_list); | |
953 | spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); | |
1da177e4 LT |
954 | } |
955 | EXPORT_SYMBOL(ib_register_event_handler); | |
956 | ||
957 | /** | |
958 | * ib_unregister_event_handler - Unregister an event handler | |
959 | * @event_handler:Handler to unregister | |
960 | * | |
961 | * Unregister an event handler registered with | |
962 | * ib_register_event_handler(). | |
963 | */ | |
dcc9881e | 964 | void ib_unregister_event_handler(struct ib_event_handler *event_handler) |
1da177e4 LT |
965 | { |
966 | unsigned long flags; | |
967 | ||
968 | spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); | |
969 | list_del(&event_handler->list); | |
970 | spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); | |
1da177e4 LT |
971 | } |
972 | EXPORT_SYMBOL(ib_unregister_event_handler); | |
973 | ||
974 | /** | |
975 | * ib_dispatch_event - Dispatch an asynchronous event | |
976 | * @event:Event to dispatch | |
977 | * | |
978 | * Low-level drivers must call ib_dispatch_event() to dispatch the | |
979 | * event to all registered event handlers when an asynchronous event | |
980 | * occurs. | |
981 | */ | |
982 | void ib_dispatch_event(struct ib_event *event) | |
983 | { | |
984 | unsigned long flags; | |
985 | struct ib_event_handler *handler; | |
986 | ||
987 | spin_lock_irqsave(&event->device->event_handler_lock, flags); | |
988 | ||
989 | list_for_each_entry(handler, &event->device->event_handler_list, list) | |
990 | handler->handler(handler, event); | |
991 | ||
992 | spin_unlock_irqrestore(&event->device->event_handler_lock, flags); | |
993 | } | |
994 | EXPORT_SYMBOL(ib_dispatch_event); | |
995 | ||
1da177e4 LT |
996 | /** |
997 | * ib_query_port - Query IB port attributes | |
998 | * @device:Device to query | |
999 | * @port_num:Port number to query | |
1000 | * @port_attr:Port attributes | |
1001 | * | |
1002 | * ib_query_port() returns the attributes of a port through the | |
1003 | * @port_attr pointer. | |
1004 | */ | |
1005 | int ib_query_port(struct ib_device *device, | |
1006 | u8 port_num, | |
1007 | struct ib_port_attr *port_attr) | |
1008 | { | |
fad61ad4 EC |
1009 | union ib_gid gid; |
1010 | int err; | |
1011 | ||
24dc831b | 1012 | if (!rdma_is_port_valid(device, port_num)) |
116c0074 RD |
1013 | return -EINVAL; |
1014 | ||
fad61ad4 | 1015 | memset(port_attr, 0, sizeof(*port_attr)); |
3023a1e9 | 1016 | err = device->ops.query_port(device, port_num, port_attr); |
fad61ad4 EC |
1017 | if (err || port_attr->subnet_prefix) |
1018 | return err; | |
1019 | ||
d7012467 EC |
1020 | if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND) |
1021 | return 0; | |
1022 | ||
3023a1e9 | 1023 | err = device->ops.query_gid(device, port_num, 0, &gid); |
fad61ad4 EC |
1024 | if (err) |
1025 | return err; | |
1026 | ||
1027 | port_attr->subnet_prefix = be64_to_cpu(gid.global.subnet_prefix); | |
1028 | return 0; | |
1da177e4 LT |
1029 | } |
1030 | EXPORT_SYMBOL(ib_query_port); | |
1031 | ||
03db3a2d MB |
1032 | /** |
1033 | * ib_enum_roce_netdev - enumerate all RoCE ports | |
1034 | * @ib_dev : IB device we want to query | |
1035 | * @filter: Should we call the callback? | |
1036 | * @filter_cookie: Cookie passed to filter | |
1037 | * @cb: Callback to call for each found RoCE ports | |
1038 | * @cookie: Cookie passed back to the callback | |
1039 | * | |
1040 | * Enumerates all of the physical RoCE ports of ib_dev | |
1041 | * which are related to netdevice and calls callback() on each | |
1042 | * device for which filter() function returns non zero. | |
1043 | */ | |
1044 | void ib_enum_roce_netdev(struct ib_device *ib_dev, | |
1045 | roce_netdev_filter filter, | |
1046 | void *filter_cookie, | |
1047 | roce_netdev_callback cb, | |
1048 | void *cookie) | |
1049 | { | |
1050 | u8 port; | |
1051 | ||
1052 | for (port = rdma_start_port(ib_dev); port <= rdma_end_port(ib_dev); | |
1053 | port++) | |
1054 | if (rdma_protocol_roce(ib_dev, port)) { | |
1055 | struct net_device *idev = NULL; | |
1056 | ||
3023a1e9 KH |
1057 | if (ib_dev->ops.get_netdev) |
1058 | idev = ib_dev->ops.get_netdev(ib_dev, port); | |
03db3a2d MB |
1059 | |
1060 | if (idev && | |
1061 | idev->reg_state >= NETREG_UNREGISTERED) { | |
1062 | dev_put(idev); | |
1063 | idev = NULL; | |
1064 | } | |
1065 | ||
1066 | if (filter(ib_dev, port, idev, filter_cookie)) | |
1067 | cb(ib_dev, port, idev, cookie); | |
1068 | ||
1069 | if (idev) | |
1070 | dev_put(idev); | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | /** | |
1075 | * ib_enum_all_roce_netdevs - enumerate all RoCE devices | |
1076 | * @filter: Should we call the callback? | |
1077 | * @filter_cookie: Cookie passed to filter | |
1078 | * @cb: Callback to call for each found RoCE ports | |
1079 | * @cookie: Cookie passed back to the callback | |
1080 | * | |
1081 | * Enumerates all RoCE devices' physical ports which are related | |
1082 | * to netdevices and calls callback() on each device for which | |
1083 | * filter() function returns non zero. | |
1084 | */ | |
1085 | void ib_enum_all_roce_netdevs(roce_netdev_filter filter, | |
1086 | void *filter_cookie, | |
1087 | roce_netdev_callback cb, | |
1088 | void *cookie) | |
1089 | { | |
1090 | struct ib_device *dev; | |
0df91bb6 | 1091 | unsigned long index; |
03db3a2d | 1092 | |
921eab11 | 1093 | down_read(&devices_rwsem); |
0df91bb6 | 1094 | xa_for_each_marked (&devices, index, dev, DEVICE_REGISTERED) |
03db3a2d | 1095 | ib_enum_roce_netdev(dev, filter, filter_cookie, cb, cookie); |
921eab11 | 1096 | up_read(&devices_rwsem); |
8030c835 LR |
1097 | } |
1098 | ||
1099 | /** | |
1100 | * ib_enum_all_devs - enumerate all ib_devices | |
1101 | * @cb: Callback to call for each found ib_device | |
1102 | * | |
1103 | * Enumerates all ib_devices and calls callback() on each device. | |
1104 | */ | |
1105 | int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, | |
1106 | struct netlink_callback *cb) | |
1107 | { | |
0df91bb6 | 1108 | unsigned long index; |
8030c835 LR |
1109 | struct ib_device *dev; |
1110 | unsigned int idx = 0; | |
1111 | int ret = 0; | |
1112 | ||
921eab11 | 1113 | down_read(&devices_rwsem); |
0df91bb6 | 1114 | xa_for_each_marked (&devices, index, dev, DEVICE_REGISTERED) { |
8030c835 LR |
1115 | ret = nldev_cb(dev, skb, cb, idx); |
1116 | if (ret) | |
1117 | break; | |
1118 | idx++; | |
1119 | } | |
921eab11 | 1120 | up_read(&devices_rwsem); |
8030c835 | 1121 | return ret; |
03db3a2d MB |
1122 | } |
1123 | ||
1da177e4 LT |
1124 | /** |
1125 | * ib_query_pkey - Get P_Key table entry | |
1126 | * @device:Device to query | |
1127 | * @port_num:Port number to query | |
1128 | * @index:P_Key table index to query | |
1129 | * @pkey:Returned P_Key | |
1130 | * | |
1131 | * ib_query_pkey() fetches the specified P_Key table entry. | |
1132 | */ | |
1133 | int ib_query_pkey(struct ib_device *device, | |
1134 | u8 port_num, u16 index, u16 *pkey) | |
1135 | { | |
9af3f5cf YS |
1136 | if (!rdma_is_port_valid(device, port_num)) |
1137 | return -EINVAL; | |
1138 | ||
3023a1e9 | 1139 | return device->ops.query_pkey(device, port_num, index, pkey); |
1da177e4 LT |
1140 | } |
1141 | EXPORT_SYMBOL(ib_query_pkey); | |
1142 | ||
1143 | /** | |
1144 | * ib_modify_device - Change IB device attributes | |
1145 | * @device:Device to modify | |
1146 | * @device_modify_mask:Mask of attributes to change | |
1147 | * @device_modify:New attribute values | |
1148 | * | |
1149 | * ib_modify_device() changes a device's attributes as specified by | |
1150 | * the @device_modify_mask and @device_modify structure. | |
1151 | */ | |
1152 | int ib_modify_device(struct ib_device *device, | |
1153 | int device_modify_mask, | |
1154 | struct ib_device_modify *device_modify) | |
1155 | { | |
3023a1e9 | 1156 | if (!device->ops.modify_device) |
10e1b54b BVA |
1157 | return -ENOSYS; |
1158 | ||
3023a1e9 KH |
1159 | return device->ops.modify_device(device, device_modify_mask, |
1160 | device_modify); | |
1da177e4 LT |
1161 | } |
1162 | EXPORT_SYMBOL(ib_modify_device); | |
1163 | ||
1164 | /** | |
1165 | * ib_modify_port - Modifies the attributes for the specified port. | |
1166 | * @device: The device to modify. | |
1167 | * @port_num: The number of the port to modify. | |
1168 | * @port_modify_mask: Mask used to specify which attributes of the port | |
1169 | * to change. | |
1170 | * @port_modify: New attribute values for the port. | |
1171 | * | |
1172 | * ib_modify_port() changes a port's attributes as specified by the | |
1173 | * @port_modify_mask and @port_modify structure. | |
1174 | */ | |
1175 | int ib_modify_port(struct ib_device *device, | |
1176 | u8 port_num, int port_modify_mask, | |
1177 | struct ib_port_modify *port_modify) | |
1178 | { | |
61e0962d | 1179 | int rc; |
10e1b54b | 1180 | |
24dc831b | 1181 | if (!rdma_is_port_valid(device, port_num)) |
116c0074 RD |
1182 | return -EINVAL; |
1183 | ||
3023a1e9 KH |
1184 | if (device->ops.modify_port) |
1185 | rc = device->ops.modify_port(device, port_num, | |
1186 | port_modify_mask, | |
1187 | port_modify); | |
61e0962d SX |
1188 | else |
1189 | rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS; | |
1190 | return rc; | |
1da177e4 LT |
1191 | } |
1192 | EXPORT_SYMBOL(ib_modify_port); | |
1193 | ||
5eb620c8 YE |
1194 | /** |
1195 | * ib_find_gid - Returns the port number and GID table index where | |
dbb12562 | 1196 | * a specified GID value occurs. Its searches only for IB link layer. |
5eb620c8 YE |
1197 | * @device: The device to query. |
1198 | * @gid: The GID value to search for. | |
1199 | * @port_num: The port number of the device where the GID value was found. | |
1200 | * @index: The index into the GID table where the GID was found. This | |
1201 | * parameter may be NULL. | |
1202 | */ | |
1203 | int ib_find_gid(struct ib_device *device, union ib_gid *gid, | |
b26c4a11 | 1204 | u8 *port_num, u16 *index) |
5eb620c8 YE |
1205 | { |
1206 | union ib_gid tmp_gid; | |
1207 | int ret, port, i; | |
1208 | ||
0cf18d77 | 1209 | for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) { |
22d24f75 | 1210 | if (!rdma_protocol_ib(device, port)) |
b39ffa1d MB |
1211 | continue; |
1212 | ||
7738613e | 1213 | for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { |
1dfce294 | 1214 | ret = rdma_query_gid(device, port, i, &tmp_gid); |
5eb620c8 YE |
1215 | if (ret) |
1216 | return ret; | |
1217 | if (!memcmp(&tmp_gid, gid, sizeof *gid)) { | |
1218 | *port_num = port; | |
1219 | if (index) | |
1220 | *index = i; | |
1221 | return 0; | |
1222 | } | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | return -ENOENT; | |
1227 | } | |
1228 | EXPORT_SYMBOL(ib_find_gid); | |
1229 | ||
1230 | /** | |
1231 | * ib_find_pkey - Returns the PKey table index where a specified | |
1232 | * PKey value occurs. | |
1233 | * @device: The device to query. | |
1234 | * @port_num: The port number of the device to search for the PKey. | |
1235 | * @pkey: The PKey value to search for. | |
1236 | * @index: The index into the PKey table where the PKey was found. | |
1237 | */ | |
1238 | int ib_find_pkey(struct ib_device *device, | |
1239 | u8 port_num, u16 pkey, u16 *index) | |
1240 | { | |
1241 | int ret, i; | |
1242 | u16 tmp_pkey; | |
ff7166c4 | 1243 | int partial_ix = -1; |
5eb620c8 | 1244 | |
7738613e | 1245 | for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) { |
5eb620c8 YE |
1246 | ret = ib_query_pkey(device, port_num, i, &tmp_pkey); |
1247 | if (ret) | |
1248 | return ret; | |
36026ecc | 1249 | if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { |
ff7166c4 JM |
1250 | /* if there is full-member pkey take it.*/ |
1251 | if (tmp_pkey & 0x8000) { | |
1252 | *index = i; | |
1253 | return 0; | |
1254 | } | |
1255 | if (partial_ix < 0) | |
1256 | partial_ix = i; | |
5eb620c8 YE |
1257 | } |
1258 | } | |
1259 | ||
ff7166c4 JM |
1260 | /*no full-member, if exists take the limited*/ |
1261 | if (partial_ix >= 0) { | |
1262 | *index = partial_ix; | |
1263 | return 0; | |
1264 | } | |
5eb620c8 YE |
1265 | return -ENOENT; |
1266 | } | |
1267 | EXPORT_SYMBOL(ib_find_pkey); | |
1268 | ||
9268f72d YK |
1269 | /** |
1270 | * ib_get_net_dev_by_params() - Return the appropriate net_dev | |
1271 | * for a received CM request | |
1272 | * @dev: An RDMA device on which the request has been received. | |
1273 | * @port: Port number on the RDMA device. | |
1274 | * @pkey: The Pkey the request came on. | |
1275 | * @gid: A GID that the net_dev uses to communicate. | |
1276 | * @addr: Contains the IP address that the request specified as its | |
1277 | * destination. | |
921eab11 | 1278 | * |
9268f72d YK |
1279 | */ |
1280 | struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, | |
1281 | u8 port, | |
1282 | u16 pkey, | |
1283 | const union ib_gid *gid, | |
1284 | const struct sockaddr *addr) | |
1285 | { | |
1286 | struct net_device *net_dev = NULL; | |
0df91bb6 JG |
1287 | unsigned long index; |
1288 | void *client_data; | |
9268f72d YK |
1289 | |
1290 | if (!rdma_protocol_ib(dev, port)) | |
1291 | return NULL; | |
1292 | ||
921eab11 JG |
1293 | /* |
1294 | * Holding the read side guarantees that the client will not become | |
1295 | * unregistered while we are calling get_net_dev_by_params() | |
1296 | */ | |
1297 | down_read(&dev->client_data_rwsem); | |
0df91bb6 JG |
1298 | xan_for_each_marked (&dev->client_data, index, client_data, |
1299 | CLIENT_DATA_REGISTERED) { | |
1300 | struct ib_client *client = xa_load(&clients, index); | |
9268f72d | 1301 | |
0df91bb6 | 1302 | if (!client || !client->get_net_dev_by_params) |
9268f72d YK |
1303 | continue; |
1304 | ||
0df91bb6 JG |
1305 | net_dev = client->get_net_dev_by_params(dev, port, pkey, gid, |
1306 | addr, client_data); | |
1307 | if (net_dev) | |
1308 | break; | |
9268f72d | 1309 | } |
921eab11 | 1310 | up_read(&dev->client_data_rwsem); |
9268f72d YK |
1311 | |
1312 | return net_dev; | |
1313 | } | |
1314 | EXPORT_SYMBOL(ib_get_net_dev_by_params); | |
1315 | ||
521ed0d9 KH |
1316 | void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops) |
1317 | { | |
3023a1e9 | 1318 | struct ib_device_ops *dev_ops = &dev->ops; |
521ed0d9 KH |
1319 | #define SET_DEVICE_OP(ptr, name) \ |
1320 | do { \ | |
1321 | if (ops->name) \ | |
1322 | if (!((ptr)->name)) \ | |
1323 | (ptr)->name = ops->name; \ | |
1324 | } while (0) | |
1325 | ||
30471d4b LR |
1326 | #define SET_OBJ_SIZE(ptr, name) SET_DEVICE_OP(ptr, size_##name) |
1327 | ||
3023a1e9 | 1328 | SET_DEVICE_OP(dev_ops, add_gid); |
2f1927b0 | 1329 | SET_DEVICE_OP(dev_ops, advise_mr); |
3023a1e9 KH |
1330 | SET_DEVICE_OP(dev_ops, alloc_dm); |
1331 | SET_DEVICE_OP(dev_ops, alloc_fmr); | |
1332 | SET_DEVICE_OP(dev_ops, alloc_hw_stats); | |
1333 | SET_DEVICE_OP(dev_ops, alloc_mr); | |
1334 | SET_DEVICE_OP(dev_ops, alloc_mw); | |
1335 | SET_DEVICE_OP(dev_ops, alloc_pd); | |
1336 | SET_DEVICE_OP(dev_ops, alloc_rdma_netdev); | |
1337 | SET_DEVICE_OP(dev_ops, alloc_ucontext); | |
1338 | SET_DEVICE_OP(dev_ops, alloc_xrcd); | |
1339 | SET_DEVICE_OP(dev_ops, attach_mcast); | |
1340 | SET_DEVICE_OP(dev_ops, check_mr_status); | |
1341 | SET_DEVICE_OP(dev_ops, create_ah); | |
1342 | SET_DEVICE_OP(dev_ops, create_counters); | |
1343 | SET_DEVICE_OP(dev_ops, create_cq); | |
1344 | SET_DEVICE_OP(dev_ops, create_flow); | |
1345 | SET_DEVICE_OP(dev_ops, create_flow_action_esp); | |
1346 | SET_DEVICE_OP(dev_ops, create_qp); | |
1347 | SET_DEVICE_OP(dev_ops, create_rwq_ind_table); | |
1348 | SET_DEVICE_OP(dev_ops, create_srq); | |
1349 | SET_DEVICE_OP(dev_ops, create_wq); | |
1350 | SET_DEVICE_OP(dev_ops, dealloc_dm); | |
1351 | SET_DEVICE_OP(dev_ops, dealloc_fmr); | |
1352 | SET_DEVICE_OP(dev_ops, dealloc_mw); | |
1353 | SET_DEVICE_OP(dev_ops, dealloc_pd); | |
1354 | SET_DEVICE_OP(dev_ops, dealloc_ucontext); | |
1355 | SET_DEVICE_OP(dev_ops, dealloc_xrcd); | |
1356 | SET_DEVICE_OP(dev_ops, del_gid); | |
1357 | SET_DEVICE_OP(dev_ops, dereg_mr); | |
1358 | SET_DEVICE_OP(dev_ops, destroy_ah); | |
1359 | SET_DEVICE_OP(dev_ops, destroy_counters); | |
1360 | SET_DEVICE_OP(dev_ops, destroy_cq); | |
1361 | SET_DEVICE_OP(dev_ops, destroy_flow); | |
1362 | SET_DEVICE_OP(dev_ops, destroy_flow_action); | |
1363 | SET_DEVICE_OP(dev_ops, destroy_qp); | |
1364 | SET_DEVICE_OP(dev_ops, destroy_rwq_ind_table); | |
1365 | SET_DEVICE_OP(dev_ops, destroy_srq); | |
1366 | SET_DEVICE_OP(dev_ops, destroy_wq); | |
1367 | SET_DEVICE_OP(dev_ops, detach_mcast); | |
1368 | SET_DEVICE_OP(dev_ops, disassociate_ucontext); | |
1369 | SET_DEVICE_OP(dev_ops, drain_rq); | |
1370 | SET_DEVICE_OP(dev_ops, drain_sq); | |
02da3750 | 1371 | SET_DEVICE_OP(dev_ops, fill_res_entry); |
3023a1e9 KH |
1372 | SET_DEVICE_OP(dev_ops, get_dev_fw_str); |
1373 | SET_DEVICE_OP(dev_ops, get_dma_mr); | |
1374 | SET_DEVICE_OP(dev_ops, get_hw_stats); | |
1375 | SET_DEVICE_OP(dev_ops, get_link_layer); | |
1376 | SET_DEVICE_OP(dev_ops, get_netdev); | |
1377 | SET_DEVICE_OP(dev_ops, get_port_immutable); | |
1378 | SET_DEVICE_OP(dev_ops, get_vector_affinity); | |
1379 | SET_DEVICE_OP(dev_ops, get_vf_config); | |
1380 | SET_DEVICE_OP(dev_ops, get_vf_stats); | |
ea4baf7f | 1381 | SET_DEVICE_OP(dev_ops, init_port); |
3023a1e9 KH |
1382 | SET_DEVICE_OP(dev_ops, map_mr_sg); |
1383 | SET_DEVICE_OP(dev_ops, map_phys_fmr); | |
1384 | SET_DEVICE_OP(dev_ops, mmap); | |
1385 | SET_DEVICE_OP(dev_ops, modify_ah); | |
1386 | SET_DEVICE_OP(dev_ops, modify_cq); | |
1387 | SET_DEVICE_OP(dev_ops, modify_device); | |
1388 | SET_DEVICE_OP(dev_ops, modify_flow_action_esp); | |
1389 | SET_DEVICE_OP(dev_ops, modify_port); | |
1390 | SET_DEVICE_OP(dev_ops, modify_qp); | |
1391 | SET_DEVICE_OP(dev_ops, modify_srq); | |
1392 | SET_DEVICE_OP(dev_ops, modify_wq); | |
1393 | SET_DEVICE_OP(dev_ops, peek_cq); | |
1394 | SET_DEVICE_OP(dev_ops, poll_cq); | |
1395 | SET_DEVICE_OP(dev_ops, post_recv); | |
1396 | SET_DEVICE_OP(dev_ops, post_send); | |
1397 | SET_DEVICE_OP(dev_ops, post_srq_recv); | |
1398 | SET_DEVICE_OP(dev_ops, process_mad); | |
1399 | SET_DEVICE_OP(dev_ops, query_ah); | |
1400 | SET_DEVICE_OP(dev_ops, query_device); | |
1401 | SET_DEVICE_OP(dev_ops, query_gid); | |
1402 | SET_DEVICE_OP(dev_ops, query_pkey); | |
1403 | SET_DEVICE_OP(dev_ops, query_port); | |
1404 | SET_DEVICE_OP(dev_ops, query_qp); | |
1405 | SET_DEVICE_OP(dev_ops, query_srq); | |
1406 | SET_DEVICE_OP(dev_ops, rdma_netdev_get_params); | |
1407 | SET_DEVICE_OP(dev_ops, read_counters); | |
1408 | SET_DEVICE_OP(dev_ops, reg_dm_mr); | |
1409 | SET_DEVICE_OP(dev_ops, reg_user_mr); | |
1410 | SET_DEVICE_OP(dev_ops, req_ncomp_notif); | |
1411 | SET_DEVICE_OP(dev_ops, req_notify_cq); | |
1412 | SET_DEVICE_OP(dev_ops, rereg_user_mr); | |
1413 | SET_DEVICE_OP(dev_ops, resize_cq); | |
1414 | SET_DEVICE_OP(dev_ops, set_vf_guid); | |
1415 | SET_DEVICE_OP(dev_ops, set_vf_link_state); | |
1416 | SET_DEVICE_OP(dev_ops, unmap_fmr); | |
21a428a0 LR |
1417 | |
1418 | SET_OBJ_SIZE(dev_ops, ib_pd); | |
521ed0d9 KH |
1419 | } |
1420 | EXPORT_SYMBOL(ib_set_device_ops); | |
1421 | ||
d0e312fe | 1422 | static const struct rdma_nl_cbs ibnl_ls_cb_table[RDMA_NL_LS_NUM_OPS] = { |
735c631a | 1423 | [RDMA_NL_LS_OP_RESOLVE] = { |
647c75ac | 1424 | .doit = ib_nl_handle_resolve_resp, |
e3a2b93d LR |
1425 | .flags = RDMA_NL_ADMIN_PERM, |
1426 | }, | |
735c631a | 1427 | [RDMA_NL_LS_OP_SET_TIMEOUT] = { |
647c75ac | 1428 | .doit = ib_nl_handle_set_timeout, |
e3a2b93d LR |
1429 | .flags = RDMA_NL_ADMIN_PERM, |
1430 | }, | |
ae43f828 | 1431 | [RDMA_NL_LS_OP_IP_RESOLVE] = { |
647c75ac | 1432 | .doit = ib_nl_handle_ip_res_resp, |
e3a2b93d LR |
1433 | .flags = RDMA_NL_ADMIN_PERM, |
1434 | }, | |
735c631a MB |
1435 | }; |
1436 | ||
1da177e4 LT |
1437 | static int __init ib_core_init(void) |
1438 | { | |
1439 | int ret; | |
1440 | ||
f0626710 TH |
1441 | ib_wq = alloc_workqueue("infiniband", 0, 0); |
1442 | if (!ib_wq) | |
1443 | return -ENOMEM; | |
1444 | ||
14d3a3b2 | 1445 | ib_comp_wq = alloc_workqueue("ib-comp-wq", |
b7363e67 | 1446 | WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_SYSFS, 0); |
14d3a3b2 CH |
1447 | if (!ib_comp_wq) { |
1448 | ret = -ENOMEM; | |
1449 | goto err; | |
1450 | } | |
1451 | ||
f794809a JM |
1452 | ib_comp_unbound_wq = |
1453 | alloc_workqueue("ib-comp-unb-wq", | |
1454 | WQ_UNBOUND | WQ_HIGHPRI | WQ_MEM_RECLAIM | | |
1455 | WQ_SYSFS, WQ_UNBOUND_MAX_ACTIVE); | |
1456 | if (!ib_comp_unbound_wq) { | |
1457 | ret = -ENOMEM; | |
1458 | goto err_comp; | |
1459 | } | |
1460 | ||
55aeed06 | 1461 | ret = class_register(&ib_class); |
fd75c789 | 1462 | if (ret) { |
aba25a3e | 1463 | pr_warn("Couldn't create InfiniBand device class\n"); |
f794809a | 1464 | goto err_comp_unbound; |
fd75c789 | 1465 | } |
1da177e4 | 1466 | |
c9901724 | 1467 | ret = rdma_nl_init(); |
b2cbae2c | 1468 | if (ret) { |
c9901724 | 1469 | pr_warn("Couldn't init IB netlink interface: err %d\n", ret); |
b2cbae2c RD |
1470 | goto err_sysfs; |
1471 | } | |
1472 | ||
e3f20f02 LR |
1473 | ret = addr_init(); |
1474 | if (ret) { | |
1475 | pr_warn("Could't init IB address resolution\n"); | |
1476 | goto err_ibnl; | |
1477 | } | |
1478 | ||
4c2cb422 MB |
1479 | ret = ib_mad_init(); |
1480 | if (ret) { | |
1481 | pr_warn("Couldn't init IB MAD\n"); | |
1482 | goto err_addr; | |
1483 | } | |
1484 | ||
c2e49c92 MB |
1485 | ret = ib_sa_init(); |
1486 | if (ret) { | |
1487 | pr_warn("Couldn't init SA\n"); | |
1488 | goto err_mad; | |
1489 | } | |
1490 | ||
8f408ab6 DJ |
1491 | ret = register_lsm_notifier(&ibdev_lsm_nb); |
1492 | if (ret) { | |
1493 | pr_warn("Couldn't register LSM notifier. ret %d\n", ret); | |
c9901724 | 1494 | goto err_sa; |
8f408ab6 DJ |
1495 | } |
1496 | ||
6c80b41a | 1497 | nldev_init(); |
c9901724 | 1498 | rdma_nl_register(RDMA_NL_LS, ibnl_ls_cb_table); |
5ef8c0c1 | 1499 | roce_gid_mgmt_init(); |
1da177e4 | 1500 | |
fd75c789 NM |
1501 | return 0; |
1502 | ||
735c631a MB |
1503 | err_sa: |
1504 | ib_sa_cleanup(); | |
c2e49c92 MB |
1505 | err_mad: |
1506 | ib_mad_cleanup(); | |
4c2cb422 MB |
1507 | err_addr: |
1508 | addr_cleanup(); | |
e3f20f02 | 1509 | err_ibnl: |
c9901724 | 1510 | rdma_nl_exit(); |
fd75c789 | 1511 | err_sysfs: |
55aeed06 | 1512 | class_unregister(&ib_class); |
f794809a JM |
1513 | err_comp_unbound: |
1514 | destroy_workqueue(ib_comp_unbound_wq); | |
14d3a3b2 CH |
1515 | err_comp: |
1516 | destroy_workqueue(ib_comp_wq); | |
fd75c789 NM |
1517 | err: |
1518 | destroy_workqueue(ib_wq); | |
1da177e4 LT |
1519 | return ret; |
1520 | } | |
1521 | ||
1522 | static void __exit ib_core_cleanup(void) | |
1523 | { | |
5ef8c0c1 | 1524 | roce_gid_mgmt_cleanup(); |
6c80b41a | 1525 | nldev_exit(); |
c9901724 LR |
1526 | rdma_nl_unregister(RDMA_NL_LS); |
1527 | unregister_lsm_notifier(&ibdev_lsm_nb); | |
c2e49c92 | 1528 | ib_sa_cleanup(); |
4c2cb422 | 1529 | ib_mad_cleanup(); |
e3f20f02 | 1530 | addr_cleanup(); |
c9901724 | 1531 | rdma_nl_exit(); |
55aeed06 | 1532 | class_unregister(&ib_class); |
f794809a | 1533 | destroy_workqueue(ib_comp_unbound_wq); |
14d3a3b2 | 1534 | destroy_workqueue(ib_comp_wq); |
f7c6a7b5 | 1535 | /* Make sure that any pending umem accounting work is done. */ |
f0626710 | 1536 | destroy_workqueue(ib_wq); |
e59178d8 | 1537 | WARN_ON(!xa_empty(&clients)); |
0df91bb6 | 1538 | WARN_ON(!xa_empty(&devices)); |
1da177e4 LT |
1539 | } |
1540 | ||
e3bf14bd JG |
1541 | MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_LS, 4); |
1542 | ||
a9cd1a67 | 1543 | subsys_initcall(ib_core_init); |
1da177e4 | 1544 | module_exit(ib_core_cleanup); |