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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> | |
95ed644f | 40 | #include <linux/mutex.h> |
9268f72d | 41 | #include <linux/netdevice.h> |
8f408ab6 DJ |
42 | #include <linux/security.h> |
43 | #include <linux/notifier.h> | |
b2cbae2c | 44 | #include <rdma/rdma_netlink.h> |
03db3a2d MB |
45 | #include <rdma/ib_addr.h> |
46 | #include <rdma/ib_cache.h> | |
1da177e4 LT |
47 | |
48 | #include "core_priv.h" | |
49 | ||
50 | MODULE_AUTHOR("Roland Dreier"); | |
51 | MODULE_DESCRIPTION("core kernel InfiniBand API"); | |
52 | MODULE_LICENSE("Dual BSD/GPL"); | |
53 | ||
54 | struct ib_client_data { | |
55 | struct list_head list; | |
56 | struct ib_client *client; | |
57 | void * data; | |
7c1eb45a HE |
58 | /* The device or client is going down. Do not call client or device |
59 | * callbacks other than remove(). */ | |
60 | bool going_down; | |
1da177e4 LT |
61 | }; |
62 | ||
14d3a3b2 | 63 | struct workqueue_struct *ib_comp_wq; |
f0626710 TH |
64 | struct workqueue_struct *ib_wq; |
65 | EXPORT_SYMBOL_GPL(ib_wq); | |
66 | ||
5aa44bb9 HE |
67 | /* The device_list and client_list contain devices and clients after their |
68 | * registration has completed, and the devices and clients are removed | |
69 | * during unregistration. */ | |
1da177e4 LT |
70 | static LIST_HEAD(device_list); |
71 | static LIST_HEAD(client_list); | |
72 | ||
73 | /* | |
5aa44bb9 HE |
74 | * device_mutex and lists_rwsem protect access to both device_list and |
75 | * client_list. device_mutex protects writer access by device and client | |
76 | * registration / de-registration. lists_rwsem protects reader access to | |
77 | * these lists. Iterators of these lists must lock it for read, while updates | |
78 | * to the lists must be done with a write lock. A special case is when the | |
79 | * device_mutex is locked. In this case locking the lists for read access is | |
80 | * not necessary as the device_mutex implies it. | |
7c1eb45a HE |
81 | * |
82 | * lists_rwsem also protects access to the client data list. | |
1da177e4 | 83 | */ |
95ed644f | 84 | static DEFINE_MUTEX(device_mutex); |
5aa44bb9 HE |
85 | static DECLARE_RWSEM(lists_rwsem); |
86 | ||
8f408ab6 DJ |
87 | static int ib_security_change(struct notifier_block *nb, unsigned long event, |
88 | void *lsm_data); | |
89 | static void ib_policy_change_task(struct work_struct *work); | |
90 | static DECLARE_WORK(ib_policy_change_work, ib_policy_change_task); | |
91 | ||
92 | static struct notifier_block ibdev_lsm_nb = { | |
93 | .notifier_call = ib_security_change, | |
94 | }; | |
1da177e4 LT |
95 | |
96 | static int ib_device_check_mandatory(struct ib_device *device) | |
97 | { | |
98 | #define IB_MANDATORY_FUNC(x) { offsetof(struct ib_device, x), #x } | |
99 | static const struct { | |
100 | size_t offset; | |
101 | char *name; | |
102 | } mandatory_table[] = { | |
103 | IB_MANDATORY_FUNC(query_device), | |
104 | IB_MANDATORY_FUNC(query_port), | |
105 | IB_MANDATORY_FUNC(query_pkey), | |
106 | IB_MANDATORY_FUNC(query_gid), | |
107 | IB_MANDATORY_FUNC(alloc_pd), | |
108 | IB_MANDATORY_FUNC(dealloc_pd), | |
109 | IB_MANDATORY_FUNC(create_ah), | |
110 | IB_MANDATORY_FUNC(destroy_ah), | |
111 | IB_MANDATORY_FUNC(create_qp), | |
112 | IB_MANDATORY_FUNC(modify_qp), | |
113 | IB_MANDATORY_FUNC(destroy_qp), | |
114 | IB_MANDATORY_FUNC(post_send), | |
115 | IB_MANDATORY_FUNC(post_recv), | |
116 | IB_MANDATORY_FUNC(create_cq), | |
117 | IB_MANDATORY_FUNC(destroy_cq), | |
118 | IB_MANDATORY_FUNC(poll_cq), | |
119 | IB_MANDATORY_FUNC(req_notify_cq), | |
120 | IB_MANDATORY_FUNC(get_dma_mr), | |
7738613e IW |
121 | IB_MANDATORY_FUNC(dereg_mr), |
122 | IB_MANDATORY_FUNC(get_port_immutable) | |
1da177e4 LT |
123 | }; |
124 | int i; | |
125 | ||
9a6b090c | 126 | for (i = 0; i < ARRAY_SIZE(mandatory_table); ++i) { |
1da177e4 | 127 | if (!*(void **) ((void *) device + mandatory_table[i].offset)) { |
aba25a3e PP |
128 | pr_warn("Device %s is missing mandatory function %s\n", |
129 | device->name, mandatory_table[i].name); | |
1da177e4 LT |
130 | return -EINVAL; |
131 | } | |
132 | } | |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
137 | static struct ib_device *__ib_device_get_by_name(const char *name) | |
138 | { | |
139 | struct ib_device *device; | |
140 | ||
141 | list_for_each_entry(device, &device_list, core_list) | |
142 | if (!strncmp(name, device->name, IB_DEVICE_NAME_MAX)) | |
143 | return device; | |
144 | ||
145 | return NULL; | |
146 | } | |
147 | ||
148 | ||
149 | static int alloc_name(char *name) | |
150 | { | |
65d470b3 | 151 | unsigned long *inuse; |
1da177e4 LT |
152 | char buf[IB_DEVICE_NAME_MAX]; |
153 | struct ib_device *device; | |
154 | int i; | |
155 | ||
65d470b3 | 156 | inuse = (unsigned long *) get_zeroed_page(GFP_KERNEL); |
1da177e4 LT |
157 | if (!inuse) |
158 | return -ENOMEM; | |
159 | ||
160 | list_for_each_entry(device, &device_list, core_list) { | |
161 | if (!sscanf(device->name, name, &i)) | |
162 | continue; | |
163 | if (i < 0 || i >= PAGE_SIZE * 8) | |
164 | continue; | |
165 | snprintf(buf, sizeof buf, name, i); | |
166 | if (!strncmp(buf, device->name, IB_DEVICE_NAME_MAX)) | |
167 | set_bit(i, inuse); | |
168 | } | |
169 | ||
170 | i = find_first_zero_bit(inuse, PAGE_SIZE * 8); | |
171 | free_page((unsigned long) inuse); | |
172 | snprintf(buf, sizeof buf, name, i); | |
173 | ||
174 | if (__ib_device_get_by_name(buf)) | |
175 | return -ENFILE; | |
176 | ||
177 | strlcpy(name, buf, IB_DEVICE_NAME_MAX); | |
178 | return 0; | |
179 | } | |
180 | ||
55aeed06 JG |
181 | static void ib_device_release(struct device *device) |
182 | { | |
183 | struct ib_device *dev = container_of(device, struct ib_device, dev); | |
184 | ||
4be3a4fa PP |
185 | WARN_ON(dev->reg_state == IB_DEV_REGISTERED); |
186 | if (dev->reg_state == IB_DEV_UNREGISTERED) { | |
187 | /* | |
188 | * In IB_DEV_UNINITIALIZED state, cache or port table | |
189 | * is not even created. Free cache and port table only when | |
190 | * device reaches UNREGISTERED state. | |
191 | */ | |
192 | ib_cache_release_one(dev); | |
193 | kfree(dev->port_immutable); | |
194 | } | |
55aeed06 JG |
195 | kfree(dev); |
196 | } | |
197 | ||
198 | static int ib_device_uevent(struct device *device, | |
199 | struct kobj_uevent_env *env) | |
200 | { | |
201 | struct ib_device *dev = container_of(device, struct ib_device, dev); | |
202 | ||
203 | if (add_uevent_var(env, "NAME=%s", dev->name)) | |
204 | return -ENOMEM; | |
205 | ||
206 | /* | |
207 | * It would be nice to pass the node GUID with the event... | |
208 | */ | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | static struct class ib_class = { | |
214 | .name = "infiniband", | |
215 | .dev_release = ib_device_release, | |
216 | .dev_uevent = ib_device_uevent, | |
217 | }; | |
218 | ||
1da177e4 LT |
219 | /** |
220 | * ib_alloc_device - allocate an IB device struct | |
221 | * @size:size of structure to allocate | |
222 | * | |
223 | * Low-level drivers should use ib_alloc_device() to allocate &struct | |
224 | * ib_device. @size is the size of the structure to be allocated, | |
225 | * including any private data used by the low-level driver. | |
226 | * ib_dealloc_device() must be used to free structures allocated with | |
227 | * ib_alloc_device(). | |
228 | */ | |
229 | struct ib_device *ib_alloc_device(size_t size) | |
230 | { | |
55aeed06 JG |
231 | struct ib_device *device; |
232 | ||
233 | if (WARN_ON(size < sizeof(struct ib_device))) | |
234 | return NULL; | |
235 | ||
236 | device = kzalloc(size, GFP_KERNEL); | |
237 | if (!device) | |
238 | return NULL; | |
239 | ||
240 | device->dev.class = &ib_class; | |
241 | device_initialize(&device->dev); | |
242 | ||
243 | dev_set_drvdata(&device->dev, device); | |
244 | ||
245 | INIT_LIST_HEAD(&device->event_handler_list); | |
246 | spin_lock_init(&device->event_handler_lock); | |
247 | spin_lock_init(&device->client_data_lock); | |
248 | INIT_LIST_HEAD(&device->client_data_list); | |
249 | INIT_LIST_HEAD(&device->port_list); | |
1da177e4 | 250 | |
55aeed06 | 251 | return device; |
1da177e4 LT |
252 | } |
253 | EXPORT_SYMBOL(ib_alloc_device); | |
254 | ||
255 | /** | |
256 | * ib_dealloc_device - free an IB device struct | |
257 | * @device:structure to free | |
258 | * | |
259 | * Free a structure allocated with ib_alloc_device(). | |
260 | */ | |
261 | void ib_dealloc_device(struct ib_device *device) | |
262 | { | |
55aeed06 JG |
263 | WARN_ON(device->reg_state != IB_DEV_UNREGISTERED && |
264 | device->reg_state != IB_DEV_UNINITIALIZED); | |
9206dff1 | 265 | kobject_put(&device->dev.kobj); |
1da177e4 LT |
266 | } |
267 | EXPORT_SYMBOL(ib_dealloc_device); | |
268 | ||
269 | static int add_client_context(struct ib_device *device, struct ib_client *client) | |
270 | { | |
271 | struct ib_client_data *context; | |
272 | unsigned long flags; | |
273 | ||
274 | context = kmalloc(sizeof *context, GFP_KERNEL); | |
a0b3455f | 275 | if (!context) |
1da177e4 | 276 | return -ENOMEM; |
1da177e4 LT |
277 | |
278 | context->client = client; | |
279 | context->data = NULL; | |
7c1eb45a | 280 | context->going_down = false; |
1da177e4 | 281 | |
7c1eb45a | 282 | down_write(&lists_rwsem); |
1da177e4 LT |
283 | spin_lock_irqsave(&device->client_data_lock, flags); |
284 | list_add(&context->list, &device->client_data_list); | |
285 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
7c1eb45a | 286 | up_write(&lists_rwsem); |
1da177e4 LT |
287 | |
288 | return 0; | |
289 | } | |
290 | ||
337877a4 IW |
291 | static int verify_immutable(const struct ib_device *dev, u8 port) |
292 | { | |
293 | return WARN_ON(!rdma_cap_ib_mad(dev, port) && | |
294 | rdma_max_mad_size(dev, port) != 0); | |
295 | } | |
296 | ||
7738613e | 297 | static int read_port_immutable(struct ib_device *device) |
5eb620c8 | 298 | { |
55aeed06 | 299 | int ret; |
7738613e IW |
300 | u8 start_port = rdma_start_port(device); |
301 | u8 end_port = rdma_end_port(device); | |
302 | u8 port; | |
303 | ||
304 | /** | |
305 | * device->port_immutable is indexed directly by the port number to make | |
306 | * access to this data as efficient as possible. | |
307 | * | |
308 | * Therefore port_immutable is declared as a 1 based array with | |
309 | * potential empty slots at the beginning. | |
310 | */ | |
311 | device->port_immutable = kzalloc(sizeof(*device->port_immutable) | |
312 | * (end_port + 1), | |
313 | GFP_KERNEL); | |
314 | if (!device->port_immutable) | |
55aeed06 | 315 | return -ENOMEM; |
5eb620c8 | 316 | |
7738613e IW |
317 | for (port = start_port; port <= end_port; ++port) { |
318 | ret = device->get_port_immutable(device, port, | |
319 | &device->port_immutable[port]); | |
5eb620c8 | 320 | if (ret) |
55aeed06 | 321 | return ret; |
337877a4 | 322 | |
55aeed06 JG |
323 | if (verify_immutable(device, port)) |
324 | return -EINVAL; | |
5eb620c8 | 325 | } |
55aeed06 | 326 | return 0; |
5eb620c8 YE |
327 | } |
328 | ||
5fa76c20 IW |
329 | void ib_get_device_fw_str(struct ib_device *dev, char *str, size_t str_len) |
330 | { | |
331 | if (dev->get_dev_fw_str) | |
332 | dev->get_dev_fw_str(dev, str, str_len); | |
333 | else | |
334 | str[0] = '\0'; | |
335 | } | |
336 | EXPORT_SYMBOL(ib_get_device_fw_str); | |
337 | ||
d291f1a6 DJ |
338 | static int setup_port_pkey_list(struct ib_device *device) |
339 | { | |
340 | int i; | |
341 | ||
342 | /** | |
343 | * device->port_pkey_list is indexed directly by the port number, | |
344 | * Therefore it is declared as a 1 based array with potential empty | |
345 | * slots at the beginning. | |
346 | */ | |
347 | device->port_pkey_list = kcalloc(rdma_end_port(device) + 1, | |
348 | sizeof(*device->port_pkey_list), | |
349 | GFP_KERNEL); | |
350 | ||
351 | if (!device->port_pkey_list) | |
352 | return -ENOMEM; | |
353 | ||
354 | for (i = 0; i < (rdma_end_port(device) + 1); i++) { | |
355 | spin_lock_init(&device->port_pkey_list[i].list_lock); | |
356 | INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list); | |
357 | } | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
8f408ab6 DJ |
362 | static void ib_policy_change_task(struct work_struct *work) |
363 | { | |
364 | struct ib_device *dev; | |
365 | ||
366 | down_read(&lists_rwsem); | |
367 | list_for_each_entry(dev, &device_list, core_list) { | |
368 | int i; | |
369 | ||
370 | for (i = rdma_start_port(dev); i <= rdma_end_port(dev); i++) { | |
371 | u64 sp; | |
372 | int ret = ib_get_cached_subnet_prefix(dev, | |
373 | i, | |
374 | &sp); | |
375 | ||
376 | WARN_ONCE(ret, | |
377 | "ib_get_cached_subnet_prefix err: %d, this should never happen here\n", | |
378 | ret); | |
a750cfde DJ |
379 | if (!ret) |
380 | ib_security_cache_change(dev, i, sp); | |
8f408ab6 DJ |
381 | } |
382 | } | |
383 | up_read(&lists_rwsem); | |
384 | } | |
385 | ||
386 | static int ib_security_change(struct notifier_block *nb, unsigned long event, | |
387 | void *lsm_data) | |
388 | { | |
389 | if (event != LSM_POLICY_CHANGE) | |
390 | return NOTIFY_DONE; | |
391 | ||
392 | schedule_work(&ib_policy_change_work); | |
393 | ||
394 | return NOTIFY_OK; | |
395 | } | |
396 | ||
1da177e4 LT |
397 | /** |
398 | * ib_register_device - Register an IB device with IB core | |
399 | * @device:Device to register | |
400 | * | |
401 | * Low-level drivers use ib_register_device() to register their | |
402 | * devices with the IB core. All registered clients will receive a | |
403 | * callback for each device that is added. @device must be allocated | |
404 | * with ib_alloc_device(). | |
405 | */ | |
9a6edb60 RC |
406 | int ib_register_device(struct ib_device *device, |
407 | int (*port_callback)(struct ib_device *, | |
408 | u8, struct kobject *)) | |
1da177e4 LT |
409 | { |
410 | int ret; | |
b8071ad8 | 411 | struct ib_client *client; |
3e153a93 | 412 | struct ib_udata uhw = {.outlen = 0, .inlen = 0}; |
99db9494 BVA |
413 | struct device *parent = device->dev.parent; |
414 | ||
415 | WARN_ON_ONCE(!parent); | |
0957c29f BVA |
416 | WARN_ON_ONCE(device->dma_device); |
417 | if (device->dev.dma_ops) { | |
418 | /* | |
419 | * The caller provided custom DMA operations. Copy the | |
420 | * DMA-related fields that are used by e.g. dma_alloc_coherent() | |
421 | * into device->dev. | |
422 | */ | |
423 | device->dma_device = &device->dev; | |
424 | if (!device->dev.dma_mask) | |
425 | device->dev.dma_mask = parent->dma_mask; | |
426 | if (!device->dev.coherent_dma_mask) | |
427 | device->dev.coherent_dma_mask = | |
428 | parent->coherent_dma_mask; | |
429 | } else { | |
430 | /* | |
431 | * The caller did not provide custom DMA operations. Use the | |
432 | * DMA mapping operations of the parent device. | |
433 | */ | |
434 | device->dma_device = parent; | |
435 | } | |
1da177e4 | 436 | |
95ed644f | 437 | mutex_lock(&device_mutex); |
1da177e4 LT |
438 | |
439 | if (strchr(device->name, '%')) { | |
440 | ret = alloc_name(device->name); | |
441 | if (ret) | |
442 | goto out; | |
443 | } | |
444 | ||
445 | if (ib_device_check_mandatory(device)) { | |
446 | ret = -EINVAL; | |
447 | goto out; | |
448 | } | |
449 | ||
7738613e | 450 | ret = read_port_immutable(device); |
5eb620c8 | 451 | if (ret) { |
aba25a3e PP |
452 | pr_warn("Couldn't create per port immutable data %s\n", |
453 | device->name); | |
5eb620c8 YE |
454 | goto out; |
455 | } | |
456 | ||
d291f1a6 DJ |
457 | ret = setup_port_pkey_list(device); |
458 | if (ret) { | |
459 | pr_warn("Couldn't create per port_pkey_list\n"); | |
460 | goto out; | |
461 | } | |
462 | ||
03db3a2d MB |
463 | ret = ib_cache_setup_one(device); |
464 | if (ret) { | |
aba25a3e | 465 | pr_warn("Couldn't set up InfiniBand P_Key/GID cache\n"); |
4be3a4fa | 466 | goto port_cleanup; |
03db3a2d MB |
467 | } |
468 | ||
43579b5f PP |
469 | ret = ib_device_register_rdmacg(device); |
470 | if (ret) { | |
471 | pr_warn("Couldn't register device with rdma cgroup\n"); | |
4be3a4fa | 472 | goto cache_cleanup; |
43579b5f PP |
473 | } |
474 | ||
3e153a93 IW |
475 | memset(&device->attrs, 0, sizeof(device->attrs)); |
476 | ret = device->query_device(device, &device->attrs, &uhw); | |
477 | if (ret) { | |
aba25a3e | 478 | pr_warn("Couldn't query the device attributes\n"); |
4be3a4fa | 479 | goto cache_cleanup; |
3e153a93 IW |
480 | } |
481 | ||
9a6edb60 | 482 | ret = ib_device_register_sysfs(device, port_callback); |
1da177e4 | 483 | if (ret) { |
aba25a3e PP |
484 | pr_warn("Couldn't register device %s with driver model\n", |
485 | device->name); | |
4be3a4fa | 486 | goto cache_cleanup; |
1da177e4 LT |
487 | } |
488 | ||
1da177e4 LT |
489 | device->reg_state = IB_DEV_REGISTERED; |
490 | ||
b8071ad8 DL |
491 | list_for_each_entry(client, &client_list, list) |
492 | if (client->add && !add_client_context(device, client)) | |
493 | client->add(device); | |
1da177e4 | 494 | |
5aa44bb9 HE |
495 | down_write(&lists_rwsem); |
496 | list_add_tail(&device->core_list, &device_list); | |
497 | up_write(&lists_rwsem); | |
4be3a4fa PP |
498 | mutex_unlock(&device_mutex); |
499 | return 0; | |
500 | ||
501 | cache_cleanup: | |
502 | ib_cache_cleanup_one(device); | |
503 | ib_cache_release_one(device); | |
504 | port_cleanup: | |
505 | kfree(device->port_immutable); | |
5aa44bb9 | 506 | out: |
95ed644f | 507 | mutex_unlock(&device_mutex); |
1da177e4 LT |
508 | return ret; |
509 | } | |
510 | EXPORT_SYMBOL(ib_register_device); | |
511 | ||
512 | /** | |
513 | * ib_unregister_device - Unregister an IB device | |
514 | * @device:Device to unregister | |
515 | * | |
516 | * Unregister an IB device. All clients will receive a remove callback. | |
517 | */ | |
518 | void ib_unregister_device(struct ib_device *device) | |
519 | { | |
1da177e4 LT |
520 | struct ib_client_data *context, *tmp; |
521 | unsigned long flags; | |
522 | ||
95ed644f | 523 | mutex_lock(&device_mutex); |
1da177e4 | 524 | |
5aa44bb9 HE |
525 | down_write(&lists_rwsem); |
526 | list_del(&device->core_list); | |
7c1eb45a HE |
527 | spin_lock_irqsave(&device->client_data_lock, flags); |
528 | list_for_each_entry_safe(context, tmp, &device->client_data_list, list) | |
529 | context->going_down = true; | |
530 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
531 | downgrade_write(&lists_rwsem); | |
5aa44bb9 | 532 | |
7c1eb45a HE |
533 | list_for_each_entry_safe(context, tmp, &device->client_data_list, |
534 | list) { | |
535 | if (context->client->remove) | |
536 | context->client->remove(device, context->data); | |
537 | } | |
538 | up_read(&lists_rwsem); | |
1da177e4 | 539 | |
95ed644f | 540 | mutex_unlock(&device_mutex); |
1da177e4 | 541 | |
43579b5f | 542 | ib_device_unregister_rdmacg(device); |
9206dff1 | 543 | ib_device_unregister_sysfs(device); |
03db3a2d | 544 | ib_cache_cleanup_one(device); |
9206dff1 | 545 | |
d291f1a6 DJ |
546 | ib_security_destroy_port_pkey_list(device); |
547 | kfree(device->port_pkey_list); | |
548 | ||
7c1eb45a | 549 | down_write(&lists_rwsem); |
1da177e4 LT |
550 | spin_lock_irqsave(&device->client_data_lock, flags); |
551 | list_for_each_entry_safe(context, tmp, &device->client_data_list, list) | |
552 | kfree(context); | |
553 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
7c1eb45a | 554 | up_write(&lists_rwsem); |
1da177e4 LT |
555 | |
556 | device->reg_state = IB_DEV_UNREGISTERED; | |
557 | } | |
558 | EXPORT_SYMBOL(ib_unregister_device); | |
559 | ||
560 | /** | |
561 | * ib_register_client - Register an IB client | |
562 | * @client:Client to register | |
563 | * | |
564 | * Upper level users of the IB drivers can use ib_register_client() to | |
565 | * register callbacks for IB device addition and removal. When an IB | |
566 | * device is added, each registered client's add method will be called | |
567 | * (in the order the clients were registered), and when a device is | |
568 | * removed, each client's remove method will be called (in the reverse | |
569 | * order that clients were registered). In addition, when | |
570 | * ib_register_client() is called, the client will receive an add | |
571 | * callback for all devices already registered. | |
572 | */ | |
573 | int ib_register_client(struct ib_client *client) | |
574 | { | |
575 | struct ib_device *device; | |
576 | ||
95ed644f | 577 | mutex_lock(&device_mutex); |
1da177e4 | 578 | |
1da177e4 LT |
579 | list_for_each_entry(device, &device_list, core_list) |
580 | if (client->add && !add_client_context(device, client)) | |
581 | client->add(device); | |
582 | ||
5aa44bb9 HE |
583 | down_write(&lists_rwsem); |
584 | list_add_tail(&client->list, &client_list); | |
585 | up_write(&lists_rwsem); | |
586 | ||
95ed644f | 587 | mutex_unlock(&device_mutex); |
1da177e4 LT |
588 | |
589 | return 0; | |
590 | } | |
591 | EXPORT_SYMBOL(ib_register_client); | |
592 | ||
593 | /** | |
594 | * ib_unregister_client - Unregister an IB client | |
595 | * @client:Client to unregister | |
596 | * | |
597 | * Upper level users use ib_unregister_client() to remove their client | |
598 | * registration. When ib_unregister_client() is called, the client | |
599 | * will receive a remove callback for each IB device still registered. | |
600 | */ | |
601 | void ib_unregister_client(struct ib_client *client) | |
602 | { | |
603 | struct ib_client_data *context, *tmp; | |
604 | struct ib_device *device; | |
605 | unsigned long flags; | |
606 | ||
95ed644f | 607 | mutex_lock(&device_mutex); |
1da177e4 | 608 | |
5aa44bb9 HE |
609 | down_write(&lists_rwsem); |
610 | list_del(&client->list); | |
611 | up_write(&lists_rwsem); | |
612 | ||
1da177e4 | 613 | list_for_each_entry(device, &device_list, core_list) { |
7c1eb45a | 614 | struct ib_client_data *found_context = NULL; |
1da177e4 | 615 | |
7c1eb45a | 616 | down_write(&lists_rwsem); |
1da177e4 LT |
617 | spin_lock_irqsave(&device->client_data_lock, flags); |
618 | list_for_each_entry_safe(context, tmp, &device->client_data_list, list) | |
619 | if (context->client == client) { | |
7c1eb45a HE |
620 | context->going_down = true; |
621 | found_context = context; | |
622 | break; | |
1da177e4 LT |
623 | } |
624 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
7c1eb45a HE |
625 | up_write(&lists_rwsem); |
626 | ||
627 | if (client->remove) | |
628 | client->remove(device, found_context ? | |
629 | found_context->data : NULL); | |
630 | ||
631 | if (!found_context) { | |
632 | pr_warn("No client context found for %s/%s\n", | |
633 | device->name, client->name); | |
634 | continue; | |
635 | } | |
636 | ||
637 | down_write(&lists_rwsem); | |
638 | spin_lock_irqsave(&device->client_data_lock, flags); | |
639 | list_del(&found_context->list); | |
640 | kfree(found_context); | |
641 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
642 | up_write(&lists_rwsem); | |
1da177e4 | 643 | } |
1da177e4 | 644 | |
95ed644f | 645 | mutex_unlock(&device_mutex); |
1da177e4 LT |
646 | } |
647 | EXPORT_SYMBOL(ib_unregister_client); | |
648 | ||
649 | /** | |
650 | * ib_get_client_data - Get IB client context | |
651 | * @device:Device to get context for | |
652 | * @client:Client to get context for | |
653 | * | |
654 | * ib_get_client_data() returns client context set with | |
655 | * ib_set_client_data(). | |
656 | */ | |
657 | void *ib_get_client_data(struct ib_device *device, struct ib_client *client) | |
658 | { | |
659 | struct ib_client_data *context; | |
660 | void *ret = NULL; | |
661 | unsigned long flags; | |
662 | ||
663 | spin_lock_irqsave(&device->client_data_lock, flags); | |
664 | list_for_each_entry(context, &device->client_data_list, list) | |
665 | if (context->client == client) { | |
666 | ret = context->data; | |
667 | break; | |
668 | } | |
669 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
670 | ||
671 | return ret; | |
672 | } | |
673 | EXPORT_SYMBOL(ib_get_client_data); | |
674 | ||
675 | /** | |
9cd330d3 | 676 | * ib_set_client_data - Set IB client context |
1da177e4 LT |
677 | * @device:Device to set context for |
678 | * @client:Client to set context for | |
679 | * @data:Context to set | |
680 | * | |
681 | * ib_set_client_data() sets client context that can be retrieved with | |
682 | * ib_get_client_data(). | |
683 | */ | |
684 | void ib_set_client_data(struct ib_device *device, struct ib_client *client, | |
685 | void *data) | |
686 | { | |
687 | struct ib_client_data *context; | |
688 | unsigned long flags; | |
689 | ||
690 | spin_lock_irqsave(&device->client_data_lock, flags); | |
691 | list_for_each_entry(context, &device->client_data_list, list) | |
692 | if (context->client == client) { | |
693 | context->data = data; | |
694 | goto out; | |
695 | } | |
696 | ||
aba25a3e PP |
697 | pr_warn("No client context found for %s/%s\n", |
698 | device->name, client->name); | |
1da177e4 LT |
699 | |
700 | out: | |
701 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
702 | } | |
703 | EXPORT_SYMBOL(ib_set_client_data); | |
704 | ||
705 | /** | |
706 | * ib_register_event_handler - Register an IB event handler | |
707 | * @event_handler:Handler to register | |
708 | * | |
709 | * ib_register_event_handler() registers an event handler that will be | |
710 | * called back when asynchronous IB events occur (as defined in | |
711 | * chapter 11 of the InfiniBand Architecture Specification). This | |
712 | * callback may occur in interrupt context. | |
713 | */ | |
714 | int ib_register_event_handler (struct ib_event_handler *event_handler) | |
715 | { | |
716 | unsigned long flags; | |
717 | ||
718 | spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); | |
719 | list_add_tail(&event_handler->list, | |
720 | &event_handler->device->event_handler_list); | |
721 | spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); | |
722 | ||
723 | return 0; | |
724 | } | |
725 | EXPORT_SYMBOL(ib_register_event_handler); | |
726 | ||
727 | /** | |
728 | * ib_unregister_event_handler - Unregister an event handler | |
729 | * @event_handler:Handler to unregister | |
730 | * | |
731 | * Unregister an event handler registered with | |
732 | * ib_register_event_handler(). | |
733 | */ | |
734 | int ib_unregister_event_handler(struct ib_event_handler *event_handler) | |
735 | { | |
736 | unsigned long flags; | |
737 | ||
738 | spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); | |
739 | list_del(&event_handler->list); | |
740 | spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); | |
741 | ||
742 | return 0; | |
743 | } | |
744 | EXPORT_SYMBOL(ib_unregister_event_handler); | |
745 | ||
746 | /** | |
747 | * ib_dispatch_event - Dispatch an asynchronous event | |
748 | * @event:Event to dispatch | |
749 | * | |
750 | * Low-level drivers must call ib_dispatch_event() to dispatch the | |
751 | * event to all registered event handlers when an asynchronous event | |
752 | * occurs. | |
753 | */ | |
754 | void ib_dispatch_event(struct ib_event *event) | |
755 | { | |
756 | unsigned long flags; | |
757 | struct ib_event_handler *handler; | |
758 | ||
759 | spin_lock_irqsave(&event->device->event_handler_lock, flags); | |
760 | ||
761 | list_for_each_entry(handler, &event->device->event_handler_list, list) | |
762 | handler->handler(handler, event); | |
763 | ||
764 | spin_unlock_irqrestore(&event->device->event_handler_lock, flags); | |
765 | } | |
766 | EXPORT_SYMBOL(ib_dispatch_event); | |
767 | ||
1da177e4 LT |
768 | /** |
769 | * ib_query_port - Query IB port attributes | |
770 | * @device:Device to query | |
771 | * @port_num:Port number to query | |
772 | * @port_attr:Port attributes | |
773 | * | |
774 | * ib_query_port() returns the attributes of a port through the | |
775 | * @port_attr pointer. | |
776 | */ | |
777 | int ib_query_port(struct ib_device *device, | |
778 | u8 port_num, | |
779 | struct ib_port_attr *port_attr) | |
780 | { | |
fad61ad4 EC |
781 | union ib_gid gid; |
782 | int err; | |
783 | ||
24dc831b | 784 | if (!rdma_is_port_valid(device, port_num)) |
116c0074 RD |
785 | return -EINVAL; |
786 | ||
fad61ad4 EC |
787 | memset(port_attr, 0, sizeof(*port_attr)); |
788 | err = device->query_port(device, port_num, port_attr); | |
789 | if (err || port_attr->subnet_prefix) | |
790 | return err; | |
791 | ||
d7012467 EC |
792 | if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND) |
793 | return 0; | |
794 | ||
fad61ad4 EC |
795 | err = ib_query_gid(device, port_num, 0, &gid, NULL); |
796 | if (err) | |
797 | return err; | |
798 | ||
799 | port_attr->subnet_prefix = be64_to_cpu(gid.global.subnet_prefix); | |
800 | return 0; | |
1da177e4 LT |
801 | } |
802 | EXPORT_SYMBOL(ib_query_port); | |
803 | ||
804 | /** | |
805 | * ib_query_gid - Get GID table entry | |
806 | * @device:Device to query | |
807 | * @port_num:Port number to query | |
808 | * @index:GID table index to query | |
809 | * @gid:Returned GID | |
55ee3ab2 MB |
810 | * @attr: Returned GID attributes related to this GID index (only in RoCE). |
811 | * NULL means ignore. | |
1da177e4 LT |
812 | * |
813 | * ib_query_gid() fetches the specified GID table entry. | |
814 | */ | |
815 | int ib_query_gid(struct ib_device *device, | |
55ee3ab2 MB |
816 | u8 port_num, int index, union ib_gid *gid, |
817 | struct ib_gid_attr *attr) | |
1da177e4 | 818 | { |
03db3a2d | 819 | if (rdma_cap_roce_gid_table(device, port_num)) |
55ee3ab2 MB |
820 | return ib_get_cached_gid(device, port_num, index, gid, attr); |
821 | ||
822 | if (attr) | |
823 | return -EINVAL; | |
03db3a2d | 824 | |
1da177e4 LT |
825 | return device->query_gid(device, port_num, index, gid); |
826 | } | |
827 | EXPORT_SYMBOL(ib_query_gid); | |
828 | ||
03db3a2d MB |
829 | /** |
830 | * ib_enum_roce_netdev - enumerate all RoCE ports | |
831 | * @ib_dev : IB device we want to query | |
832 | * @filter: Should we call the callback? | |
833 | * @filter_cookie: Cookie passed to filter | |
834 | * @cb: Callback to call for each found RoCE ports | |
835 | * @cookie: Cookie passed back to the callback | |
836 | * | |
837 | * Enumerates all of the physical RoCE ports of ib_dev | |
838 | * which are related to netdevice and calls callback() on each | |
839 | * device for which filter() function returns non zero. | |
840 | */ | |
841 | void ib_enum_roce_netdev(struct ib_device *ib_dev, | |
842 | roce_netdev_filter filter, | |
843 | void *filter_cookie, | |
844 | roce_netdev_callback cb, | |
845 | void *cookie) | |
846 | { | |
847 | u8 port; | |
848 | ||
849 | for (port = rdma_start_port(ib_dev); port <= rdma_end_port(ib_dev); | |
850 | port++) | |
851 | if (rdma_protocol_roce(ib_dev, port)) { | |
852 | struct net_device *idev = NULL; | |
853 | ||
854 | if (ib_dev->get_netdev) | |
855 | idev = ib_dev->get_netdev(ib_dev, port); | |
856 | ||
857 | if (idev && | |
858 | idev->reg_state >= NETREG_UNREGISTERED) { | |
859 | dev_put(idev); | |
860 | idev = NULL; | |
861 | } | |
862 | ||
863 | if (filter(ib_dev, port, idev, filter_cookie)) | |
864 | cb(ib_dev, port, idev, cookie); | |
865 | ||
866 | if (idev) | |
867 | dev_put(idev); | |
868 | } | |
869 | } | |
870 | ||
871 | /** | |
872 | * ib_enum_all_roce_netdevs - enumerate all RoCE devices | |
873 | * @filter: Should we call the callback? | |
874 | * @filter_cookie: Cookie passed to filter | |
875 | * @cb: Callback to call for each found RoCE ports | |
876 | * @cookie: Cookie passed back to the callback | |
877 | * | |
878 | * Enumerates all RoCE devices' physical ports which are related | |
879 | * to netdevices and calls callback() on each device for which | |
880 | * filter() function returns non zero. | |
881 | */ | |
882 | void ib_enum_all_roce_netdevs(roce_netdev_filter filter, | |
883 | void *filter_cookie, | |
884 | roce_netdev_callback cb, | |
885 | void *cookie) | |
886 | { | |
887 | struct ib_device *dev; | |
888 | ||
889 | down_read(&lists_rwsem); | |
890 | list_for_each_entry(dev, &device_list, core_list) | |
891 | ib_enum_roce_netdev(dev, filter, filter_cookie, cb, cookie); | |
892 | up_read(&lists_rwsem); | |
893 | } | |
894 | ||
1da177e4 LT |
895 | /** |
896 | * ib_query_pkey - Get P_Key table entry | |
897 | * @device:Device to query | |
898 | * @port_num:Port number to query | |
899 | * @index:P_Key table index to query | |
900 | * @pkey:Returned P_Key | |
901 | * | |
902 | * ib_query_pkey() fetches the specified P_Key table entry. | |
903 | */ | |
904 | int ib_query_pkey(struct ib_device *device, | |
905 | u8 port_num, u16 index, u16 *pkey) | |
906 | { | |
907 | return device->query_pkey(device, port_num, index, pkey); | |
908 | } | |
909 | EXPORT_SYMBOL(ib_query_pkey); | |
910 | ||
911 | /** | |
912 | * ib_modify_device - Change IB device attributes | |
913 | * @device:Device to modify | |
914 | * @device_modify_mask:Mask of attributes to change | |
915 | * @device_modify:New attribute values | |
916 | * | |
917 | * ib_modify_device() changes a device's attributes as specified by | |
918 | * the @device_modify_mask and @device_modify structure. | |
919 | */ | |
920 | int ib_modify_device(struct ib_device *device, | |
921 | int device_modify_mask, | |
922 | struct ib_device_modify *device_modify) | |
923 | { | |
10e1b54b BVA |
924 | if (!device->modify_device) |
925 | return -ENOSYS; | |
926 | ||
1da177e4 LT |
927 | return device->modify_device(device, device_modify_mask, |
928 | device_modify); | |
929 | } | |
930 | EXPORT_SYMBOL(ib_modify_device); | |
931 | ||
932 | /** | |
933 | * ib_modify_port - Modifies the attributes for the specified port. | |
934 | * @device: The device to modify. | |
935 | * @port_num: The number of the port to modify. | |
936 | * @port_modify_mask: Mask used to specify which attributes of the port | |
937 | * to change. | |
938 | * @port_modify: New attribute values for the port. | |
939 | * | |
940 | * ib_modify_port() changes a port's attributes as specified by the | |
941 | * @port_modify_mask and @port_modify structure. | |
942 | */ | |
943 | int ib_modify_port(struct ib_device *device, | |
944 | u8 port_num, int port_modify_mask, | |
945 | struct ib_port_modify *port_modify) | |
946 | { | |
10e1b54b BVA |
947 | if (!device->modify_port) |
948 | return -ENOSYS; | |
949 | ||
24dc831b | 950 | if (!rdma_is_port_valid(device, port_num)) |
116c0074 RD |
951 | return -EINVAL; |
952 | ||
1da177e4 LT |
953 | return device->modify_port(device, port_num, port_modify_mask, |
954 | port_modify); | |
955 | } | |
956 | EXPORT_SYMBOL(ib_modify_port); | |
957 | ||
5eb620c8 YE |
958 | /** |
959 | * ib_find_gid - Returns the port number and GID table index where | |
960 | * a specified GID value occurs. | |
961 | * @device: The device to query. | |
962 | * @gid: The GID value to search for. | |
b39ffa1d | 963 | * @gid_type: Type of GID. |
55ee3ab2 | 964 | * @ndev: The ndev related to the GID to search for. |
5eb620c8 YE |
965 | * @port_num: The port number of the device where the GID value was found. |
966 | * @index: The index into the GID table where the GID was found. This | |
967 | * parameter may be NULL. | |
968 | */ | |
969 | int ib_find_gid(struct ib_device *device, union ib_gid *gid, | |
b39ffa1d MB |
970 | enum ib_gid_type gid_type, struct net_device *ndev, |
971 | u8 *port_num, u16 *index) | |
5eb620c8 YE |
972 | { |
973 | union ib_gid tmp_gid; | |
974 | int ret, port, i; | |
975 | ||
0cf18d77 | 976 | for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) { |
03db3a2d | 977 | if (rdma_cap_roce_gid_table(device, port)) { |
b39ffa1d | 978 | if (!ib_find_cached_gid_by_port(device, gid, gid_type, port, |
d300ec52 | 979 | ndev, index)) { |
03db3a2d MB |
980 | *port_num = port; |
981 | return 0; | |
98d25afa | 982 | } |
03db3a2d MB |
983 | } |
984 | ||
b39ffa1d MB |
985 | if (gid_type != IB_GID_TYPE_IB) |
986 | continue; | |
987 | ||
7738613e | 988 | for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { |
55ee3ab2 | 989 | ret = ib_query_gid(device, port, i, &tmp_gid, NULL); |
5eb620c8 YE |
990 | if (ret) |
991 | return ret; | |
992 | if (!memcmp(&tmp_gid, gid, sizeof *gid)) { | |
993 | *port_num = port; | |
994 | if (index) | |
995 | *index = i; | |
996 | return 0; | |
997 | } | |
998 | } | |
999 | } | |
1000 | ||
1001 | return -ENOENT; | |
1002 | } | |
1003 | EXPORT_SYMBOL(ib_find_gid); | |
1004 | ||
1005 | /** | |
1006 | * ib_find_pkey - Returns the PKey table index where a specified | |
1007 | * PKey value occurs. | |
1008 | * @device: The device to query. | |
1009 | * @port_num: The port number of the device to search for the PKey. | |
1010 | * @pkey: The PKey value to search for. | |
1011 | * @index: The index into the PKey table where the PKey was found. | |
1012 | */ | |
1013 | int ib_find_pkey(struct ib_device *device, | |
1014 | u8 port_num, u16 pkey, u16 *index) | |
1015 | { | |
1016 | int ret, i; | |
1017 | u16 tmp_pkey; | |
ff7166c4 | 1018 | int partial_ix = -1; |
5eb620c8 | 1019 | |
7738613e | 1020 | for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) { |
5eb620c8 YE |
1021 | ret = ib_query_pkey(device, port_num, i, &tmp_pkey); |
1022 | if (ret) | |
1023 | return ret; | |
36026ecc | 1024 | if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { |
ff7166c4 JM |
1025 | /* if there is full-member pkey take it.*/ |
1026 | if (tmp_pkey & 0x8000) { | |
1027 | *index = i; | |
1028 | return 0; | |
1029 | } | |
1030 | if (partial_ix < 0) | |
1031 | partial_ix = i; | |
5eb620c8 YE |
1032 | } |
1033 | } | |
1034 | ||
ff7166c4 JM |
1035 | /*no full-member, if exists take the limited*/ |
1036 | if (partial_ix >= 0) { | |
1037 | *index = partial_ix; | |
1038 | return 0; | |
1039 | } | |
5eb620c8 YE |
1040 | return -ENOENT; |
1041 | } | |
1042 | EXPORT_SYMBOL(ib_find_pkey); | |
1043 | ||
9268f72d YK |
1044 | /** |
1045 | * ib_get_net_dev_by_params() - Return the appropriate net_dev | |
1046 | * for a received CM request | |
1047 | * @dev: An RDMA device on which the request has been received. | |
1048 | * @port: Port number on the RDMA device. | |
1049 | * @pkey: The Pkey the request came on. | |
1050 | * @gid: A GID that the net_dev uses to communicate. | |
1051 | * @addr: Contains the IP address that the request specified as its | |
1052 | * destination. | |
1053 | */ | |
1054 | struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, | |
1055 | u8 port, | |
1056 | u16 pkey, | |
1057 | const union ib_gid *gid, | |
1058 | const struct sockaddr *addr) | |
1059 | { | |
1060 | struct net_device *net_dev = NULL; | |
1061 | struct ib_client_data *context; | |
1062 | ||
1063 | if (!rdma_protocol_ib(dev, port)) | |
1064 | return NULL; | |
1065 | ||
1066 | down_read(&lists_rwsem); | |
1067 | ||
1068 | list_for_each_entry(context, &dev->client_data_list, list) { | |
1069 | struct ib_client *client = context->client; | |
1070 | ||
1071 | if (context->going_down) | |
1072 | continue; | |
1073 | ||
1074 | if (client->get_net_dev_by_params) { | |
1075 | net_dev = client->get_net_dev_by_params(dev, port, pkey, | |
1076 | gid, addr, | |
1077 | context->data); | |
1078 | if (net_dev) | |
1079 | break; | |
1080 | } | |
1081 | } | |
1082 | ||
1083 | up_read(&lists_rwsem); | |
1084 | ||
1085 | return net_dev; | |
1086 | } | |
1087 | EXPORT_SYMBOL(ib_get_net_dev_by_params); | |
1088 | ||
735c631a MB |
1089 | static struct ibnl_client_cbs ibnl_ls_cb_table[] = { |
1090 | [RDMA_NL_LS_OP_RESOLVE] = { | |
1091 | .dump = ib_nl_handle_resolve_resp, | |
1092 | .module = THIS_MODULE }, | |
1093 | [RDMA_NL_LS_OP_SET_TIMEOUT] = { | |
1094 | .dump = ib_nl_handle_set_timeout, | |
1095 | .module = THIS_MODULE }, | |
ae43f828 MB |
1096 | [RDMA_NL_LS_OP_IP_RESOLVE] = { |
1097 | .dump = ib_nl_handle_ip_res_resp, | |
1098 | .module = THIS_MODULE }, | |
735c631a MB |
1099 | }; |
1100 | ||
1101 | static int ib_add_ibnl_clients(void) | |
1102 | { | |
1103 | return ibnl_add_client(RDMA_NL_LS, ARRAY_SIZE(ibnl_ls_cb_table), | |
1104 | ibnl_ls_cb_table); | |
1105 | } | |
1106 | ||
1107 | static void ib_remove_ibnl_clients(void) | |
1108 | { | |
1109 | ibnl_remove_client(RDMA_NL_LS); | |
1110 | } | |
1111 | ||
1da177e4 LT |
1112 | static int __init ib_core_init(void) |
1113 | { | |
1114 | int ret; | |
1115 | ||
f0626710 TH |
1116 | ib_wq = alloc_workqueue("infiniband", 0, 0); |
1117 | if (!ib_wq) | |
1118 | return -ENOMEM; | |
1119 | ||
14d3a3b2 | 1120 | ib_comp_wq = alloc_workqueue("ib-comp-wq", |
b7363e67 | 1121 | WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_SYSFS, 0); |
14d3a3b2 CH |
1122 | if (!ib_comp_wq) { |
1123 | ret = -ENOMEM; | |
1124 | goto err; | |
1125 | } | |
1126 | ||
55aeed06 | 1127 | ret = class_register(&ib_class); |
fd75c789 | 1128 | if (ret) { |
aba25a3e | 1129 | pr_warn("Couldn't create InfiniBand device class\n"); |
14d3a3b2 | 1130 | goto err_comp; |
fd75c789 | 1131 | } |
1da177e4 | 1132 | |
b2cbae2c RD |
1133 | ret = ibnl_init(); |
1134 | if (ret) { | |
aba25a3e | 1135 | pr_warn("Couldn't init IB netlink interface\n"); |
b2cbae2c RD |
1136 | goto err_sysfs; |
1137 | } | |
1138 | ||
e3f20f02 LR |
1139 | ret = addr_init(); |
1140 | if (ret) { | |
1141 | pr_warn("Could't init IB address resolution\n"); | |
1142 | goto err_ibnl; | |
1143 | } | |
1144 | ||
4c2cb422 MB |
1145 | ret = ib_mad_init(); |
1146 | if (ret) { | |
1147 | pr_warn("Couldn't init IB MAD\n"); | |
1148 | goto err_addr; | |
1149 | } | |
1150 | ||
c2e49c92 MB |
1151 | ret = ib_sa_init(); |
1152 | if (ret) { | |
1153 | pr_warn("Couldn't init SA\n"); | |
1154 | goto err_mad; | |
1155 | } | |
1156 | ||
da1f857b DC |
1157 | ret = ib_add_ibnl_clients(); |
1158 | if (ret) { | |
735c631a MB |
1159 | pr_warn("Couldn't register ibnl clients\n"); |
1160 | goto err_sa; | |
1161 | } | |
1162 | ||
8f408ab6 DJ |
1163 | ret = register_lsm_notifier(&ibdev_lsm_nb); |
1164 | if (ret) { | |
1165 | pr_warn("Couldn't register LSM notifier. ret %d\n", ret); | |
1166 | goto err_ibnl_clients; | |
1167 | } | |
1168 | ||
03db3a2d | 1169 | ib_cache_setup(); |
1da177e4 | 1170 | |
fd75c789 NM |
1171 | return 0; |
1172 | ||
8f408ab6 DJ |
1173 | err_ibnl_clients: |
1174 | ib_remove_ibnl_clients(); | |
735c631a MB |
1175 | err_sa: |
1176 | ib_sa_cleanup(); | |
c2e49c92 MB |
1177 | err_mad: |
1178 | ib_mad_cleanup(); | |
4c2cb422 MB |
1179 | err_addr: |
1180 | addr_cleanup(); | |
e3f20f02 LR |
1181 | err_ibnl: |
1182 | ibnl_cleanup(); | |
fd75c789 | 1183 | err_sysfs: |
55aeed06 | 1184 | class_unregister(&ib_class); |
14d3a3b2 CH |
1185 | err_comp: |
1186 | destroy_workqueue(ib_comp_wq); | |
fd75c789 NM |
1187 | err: |
1188 | destroy_workqueue(ib_wq); | |
1da177e4 LT |
1189 | return ret; |
1190 | } | |
1191 | ||
1192 | static void __exit ib_core_cleanup(void) | |
1193 | { | |
8f408ab6 | 1194 | unregister_lsm_notifier(&ibdev_lsm_nb); |
1da177e4 | 1195 | ib_cache_cleanup(); |
735c631a | 1196 | ib_remove_ibnl_clients(); |
c2e49c92 | 1197 | ib_sa_cleanup(); |
4c2cb422 | 1198 | ib_mad_cleanup(); |
e3f20f02 | 1199 | addr_cleanup(); |
b2cbae2c | 1200 | ibnl_cleanup(); |
55aeed06 | 1201 | class_unregister(&ib_class); |
14d3a3b2 | 1202 | destroy_workqueue(ib_comp_wq); |
f7c6a7b5 | 1203 | /* Make sure that any pending umem accounting work is done. */ |
f0626710 | 1204 | destroy_workqueue(ib_wq); |
1da177e4 LT |
1205 | } |
1206 | ||
1207 | module_init(ib_core_init); | |
1208 | module_exit(ib_core_cleanup); |