Commit | Line | Data |
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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 | ||
f8978bd9 | 137 | static struct ib_device *__ib_device_get_by_index(u32 index) |
ecc82c53 LR |
138 | { |
139 | struct ib_device *device; | |
140 | ||
141 | list_for_each_entry(device, &device_list, core_list) | |
142 | if (device->index == index) | |
143 | return device; | |
144 | ||
145 | return NULL; | |
146 | } | |
147 | ||
f8978bd9 LR |
148 | /* |
149 | * Caller is responsible to return refrerence count by calling put_device() | |
150 | */ | |
151 | struct ib_device *ib_device_get_by_index(u32 index) | |
152 | { | |
153 | struct ib_device *device; | |
154 | ||
155 | down_read(&lists_rwsem); | |
156 | device = __ib_device_get_by_index(index); | |
157 | if (device) | |
158 | get_device(&device->dev); | |
159 | ||
160 | up_read(&lists_rwsem); | |
161 | return device; | |
162 | } | |
163 | ||
1da177e4 LT |
164 | static struct ib_device *__ib_device_get_by_name(const char *name) |
165 | { | |
166 | struct ib_device *device; | |
167 | ||
168 | list_for_each_entry(device, &device_list, core_list) | |
169 | if (!strncmp(name, device->name, IB_DEVICE_NAME_MAX)) | |
170 | return device; | |
171 | ||
172 | return NULL; | |
173 | } | |
174 | ||
1da177e4 LT |
175 | static int alloc_name(char *name) |
176 | { | |
65d470b3 | 177 | unsigned long *inuse; |
1da177e4 LT |
178 | char buf[IB_DEVICE_NAME_MAX]; |
179 | struct ib_device *device; | |
180 | int i; | |
181 | ||
65d470b3 | 182 | inuse = (unsigned long *) get_zeroed_page(GFP_KERNEL); |
1da177e4 LT |
183 | if (!inuse) |
184 | return -ENOMEM; | |
185 | ||
186 | list_for_each_entry(device, &device_list, core_list) { | |
187 | if (!sscanf(device->name, name, &i)) | |
188 | continue; | |
189 | if (i < 0 || i >= PAGE_SIZE * 8) | |
190 | continue; | |
191 | snprintf(buf, sizeof buf, name, i); | |
192 | if (!strncmp(buf, device->name, IB_DEVICE_NAME_MAX)) | |
193 | set_bit(i, inuse); | |
194 | } | |
195 | ||
196 | i = find_first_zero_bit(inuse, PAGE_SIZE * 8); | |
197 | free_page((unsigned long) inuse); | |
198 | snprintf(buf, sizeof buf, name, i); | |
199 | ||
200 | if (__ib_device_get_by_name(buf)) | |
201 | return -ENFILE; | |
202 | ||
203 | strlcpy(name, buf, IB_DEVICE_NAME_MAX); | |
204 | return 0; | |
205 | } | |
206 | ||
55aeed06 JG |
207 | static void ib_device_release(struct device *device) |
208 | { | |
209 | struct ib_device *dev = container_of(device, struct ib_device, dev); | |
210 | ||
4be3a4fa PP |
211 | WARN_ON(dev->reg_state == IB_DEV_REGISTERED); |
212 | if (dev->reg_state == IB_DEV_UNREGISTERED) { | |
213 | /* | |
214 | * In IB_DEV_UNINITIALIZED state, cache or port table | |
215 | * is not even created. Free cache and port table only when | |
216 | * device reaches UNREGISTERED state. | |
217 | */ | |
218 | ib_cache_release_one(dev); | |
219 | kfree(dev->port_immutable); | |
220 | } | |
55aeed06 JG |
221 | kfree(dev); |
222 | } | |
223 | ||
224 | static int ib_device_uevent(struct device *device, | |
225 | struct kobj_uevent_env *env) | |
226 | { | |
227 | struct ib_device *dev = container_of(device, struct ib_device, dev); | |
228 | ||
229 | if (add_uevent_var(env, "NAME=%s", dev->name)) | |
230 | return -ENOMEM; | |
231 | ||
232 | /* | |
233 | * It would be nice to pass the node GUID with the event... | |
234 | */ | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
239 | static struct class ib_class = { | |
240 | .name = "infiniband", | |
241 | .dev_release = ib_device_release, | |
242 | .dev_uevent = ib_device_uevent, | |
243 | }; | |
244 | ||
1da177e4 LT |
245 | /** |
246 | * ib_alloc_device - allocate an IB device struct | |
247 | * @size:size of structure to allocate | |
248 | * | |
249 | * Low-level drivers should use ib_alloc_device() to allocate &struct | |
250 | * ib_device. @size is the size of the structure to be allocated, | |
251 | * including any private data used by the low-level driver. | |
252 | * ib_dealloc_device() must be used to free structures allocated with | |
253 | * ib_alloc_device(). | |
254 | */ | |
255 | struct ib_device *ib_alloc_device(size_t size) | |
256 | { | |
55aeed06 JG |
257 | struct ib_device *device; |
258 | ||
259 | if (WARN_ON(size < sizeof(struct ib_device))) | |
260 | return NULL; | |
261 | ||
262 | device = kzalloc(size, GFP_KERNEL); | |
263 | if (!device) | |
264 | return NULL; | |
265 | ||
02d8883f LR |
266 | rdma_restrack_init(&device->res); |
267 | ||
55aeed06 JG |
268 | device->dev.class = &ib_class; |
269 | device_initialize(&device->dev); | |
270 | ||
271 | dev_set_drvdata(&device->dev, device); | |
272 | ||
273 | INIT_LIST_HEAD(&device->event_handler_list); | |
274 | spin_lock_init(&device->event_handler_lock); | |
275 | spin_lock_init(&device->client_data_lock); | |
276 | INIT_LIST_HEAD(&device->client_data_list); | |
277 | INIT_LIST_HEAD(&device->port_list); | |
1da177e4 | 278 | |
55aeed06 | 279 | return device; |
1da177e4 LT |
280 | } |
281 | EXPORT_SYMBOL(ib_alloc_device); | |
282 | ||
283 | /** | |
284 | * ib_dealloc_device - free an IB device struct | |
285 | * @device:structure to free | |
286 | * | |
287 | * Free a structure allocated with ib_alloc_device(). | |
288 | */ | |
289 | void ib_dealloc_device(struct ib_device *device) | |
290 | { | |
55aeed06 JG |
291 | WARN_ON(device->reg_state != IB_DEV_UNREGISTERED && |
292 | device->reg_state != IB_DEV_UNINITIALIZED); | |
924b8900 | 293 | put_device(&device->dev); |
1da177e4 LT |
294 | } |
295 | EXPORT_SYMBOL(ib_dealloc_device); | |
296 | ||
297 | static int add_client_context(struct ib_device *device, struct ib_client *client) | |
298 | { | |
299 | struct ib_client_data *context; | |
300 | unsigned long flags; | |
301 | ||
302 | context = kmalloc(sizeof *context, GFP_KERNEL); | |
a0b3455f | 303 | if (!context) |
1da177e4 | 304 | return -ENOMEM; |
1da177e4 LT |
305 | |
306 | context->client = client; | |
307 | context->data = NULL; | |
7c1eb45a | 308 | context->going_down = false; |
1da177e4 | 309 | |
7c1eb45a | 310 | down_write(&lists_rwsem); |
1da177e4 LT |
311 | spin_lock_irqsave(&device->client_data_lock, flags); |
312 | list_add(&context->list, &device->client_data_list); | |
313 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
7c1eb45a | 314 | up_write(&lists_rwsem); |
1da177e4 LT |
315 | |
316 | return 0; | |
317 | } | |
318 | ||
337877a4 IW |
319 | static int verify_immutable(const struct ib_device *dev, u8 port) |
320 | { | |
321 | return WARN_ON(!rdma_cap_ib_mad(dev, port) && | |
322 | rdma_max_mad_size(dev, port) != 0); | |
323 | } | |
324 | ||
7738613e | 325 | static int read_port_immutable(struct ib_device *device) |
5eb620c8 | 326 | { |
55aeed06 | 327 | int ret; |
7738613e IW |
328 | u8 start_port = rdma_start_port(device); |
329 | u8 end_port = rdma_end_port(device); | |
330 | u8 port; | |
331 | ||
332 | /** | |
333 | * device->port_immutable is indexed directly by the port number to make | |
334 | * access to this data as efficient as possible. | |
335 | * | |
336 | * Therefore port_immutable is declared as a 1 based array with | |
337 | * potential empty slots at the beginning. | |
338 | */ | |
339 | device->port_immutable = kzalloc(sizeof(*device->port_immutable) | |
340 | * (end_port + 1), | |
341 | GFP_KERNEL); | |
342 | if (!device->port_immutable) | |
55aeed06 | 343 | return -ENOMEM; |
5eb620c8 | 344 | |
7738613e IW |
345 | for (port = start_port; port <= end_port; ++port) { |
346 | ret = device->get_port_immutable(device, port, | |
347 | &device->port_immutable[port]); | |
5eb620c8 | 348 | if (ret) |
55aeed06 | 349 | return ret; |
337877a4 | 350 | |
55aeed06 JG |
351 | if (verify_immutable(device, port)) |
352 | return -EINVAL; | |
5eb620c8 | 353 | } |
55aeed06 | 354 | return 0; |
5eb620c8 YE |
355 | } |
356 | ||
9abb0d1b | 357 | void ib_get_device_fw_str(struct ib_device *dev, char *str) |
5fa76c20 IW |
358 | { |
359 | if (dev->get_dev_fw_str) | |
9abb0d1b | 360 | dev->get_dev_fw_str(dev, str); |
5fa76c20 IW |
361 | else |
362 | str[0] = '\0'; | |
363 | } | |
364 | EXPORT_SYMBOL(ib_get_device_fw_str); | |
365 | ||
d291f1a6 DJ |
366 | static int setup_port_pkey_list(struct ib_device *device) |
367 | { | |
368 | int i; | |
369 | ||
370 | /** | |
371 | * device->port_pkey_list is indexed directly by the port number, | |
372 | * Therefore it is declared as a 1 based array with potential empty | |
373 | * slots at the beginning. | |
374 | */ | |
375 | device->port_pkey_list = kcalloc(rdma_end_port(device) + 1, | |
376 | sizeof(*device->port_pkey_list), | |
377 | GFP_KERNEL); | |
378 | ||
379 | if (!device->port_pkey_list) | |
380 | return -ENOMEM; | |
381 | ||
382 | for (i = 0; i < (rdma_end_port(device) + 1); i++) { | |
383 | spin_lock_init(&device->port_pkey_list[i].list_lock); | |
384 | INIT_LIST_HEAD(&device->port_pkey_list[i].pkey_list); | |
385 | } | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
8f408ab6 DJ |
390 | static void ib_policy_change_task(struct work_struct *work) |
391 | { | |
392 | struct ib_device *dev; | |
393 | ||
394 | down_read(&lists_rwsem); | |
395 | list_for_each_entry(dev, &device_list, core_list) { | |
396 | int i; | |
397 | ||
398 | for (i = rdma_start_port(dev); i <= rdma_end_port(dev); i++) { | |
399 | u64 sp; | |
400 | int ret = ib_get_cached_subnet_prefix(dev, | |
401 | i, | |
402 | &sp); | |
403 | ||
404 | WARN_ONCE(ret, | |
405 | "ib_get_cached_subnet_prefix err: %d, this should never happen here\n", | |
406 | ret); | |
a750cfde DJ |
407 | if (!ret) |
408 | ib_security_cache_change(dev, i, sp); | |
8f408ab6 DJ |
409 | } |
410 | } | |
411 | up_read(&lists_rwsem); | |
412 | } | |
413 | ||
414 | static int ib_security_change(struct notifier_block *nb, unsigned long event, | |
415 | void *lsm_data) | |
416 | { | |
417 | if (event != LSM_POLICY_CHANGE) | |
418 | return NOTIFY_DONE; | |
419 | ||
420 | schedule_work(&ib_policy_change_work); | |
421 | ||
422 | return NOTIFY_OK; | |
423 | } | |
424 | ||
ecc82c53 LR |
425 | /** |
426 | * __dev_new_index - allocate an device index | |
427 | * | |
428 | * Returns a suitable unique value for a new device interface | |
429 | * number. It assumes that there are less than 2^32-1 ib devices | |
430 | * will be present in the system. | |
431 | */ | |
432 | static u32 __dev_new_index(void) | |
433 | { | |
434 | /* | |
435 | * The device index to allow stable naming. | |
436 | * Similar to struct net -> ifindex. | |
437 | */ | |
438 | static u32 index; | |
439 | ||
440 | for (;;) { | |
441 | if (!(++index)) | |
442 | index = 1; | |
443 | ||
444 | if (!__ib_device_get_by_index(index)) | |
445 | return index; | |
446 | } | |
447 | } | |
448 | ||
1da177e4 LT |
449 | /** |
450 | * ib_register_device - Register an IB device with IB core | |
451 | * @device:Device to register | |
452 | * | |
453 | * Low-level drivers use ib_register_device() to register their | |
454 | * devices with the IB core. All registered clients will receive a | |
455 | * callback for each device that is added. @device must be allocated | |
456 | * with ib_alloc_device(). | |
457 | */ | |
9a6edb60 RC |
458 | int ib_register_device(struct ib_device *device, |
459 | int (*port_callback)(struct ib_device *, | |
460 | u8, struct kobject *)) | |
1da177e4 LT |
461 | { |
462 | int ret; | |
b8071ad8 | 463 | struct ib_client *client; |
3e153a93 | 464 | struct ib_udata uhw = {.outlen = 0, .inlen = 0}; |
99db9494 BVA |
465 | struct device *parent = device->dev.parent; |
466 | ||
0957c29f BVA |
467 | WARN_ON_ONCE(device->dma_device); |
468 | if (device->dev.dma_ops) { | |
469 | /* | |
470 | * The caller provided custom DMA operations. Copy the | |
471 | * DMA-related fields that are used by e.g. dma_alloc_coherent() | |
472 | * into device->dev. | |
473 | */ | |
474 | device->dma_device = &device->dev; | |
02ee9da3 BVA |
475 | if (!device->dev.dma_mask) { |
476 | if (parent) | |
477 | device->dev.dma_mask = parent->dma_mask; | |
478 | else | |
479 | WARN_ON_ONCE(true); | |
480 | } | |
481 | if (!device->dev.coherent_dma_mask) { | |
482 | if (parent) | |
483 | device->dev.coherent_dma_mask = | |
484 | parent->coherent_dma_mask; | |
485 | else | |
486 | WARN_ON_ONCE(true); | |
487 | } | |
0957c29f BVA |
488 | } else { |
489 | /* | |
490 | * The caller did not provide custom DMA operations. Use the | |
491 | * DMA mapping operations of the parent device. | |
492 | */ | |
02ee9da3 | 493 | WARN_ON_ONCE(!parent); |
0957c29f BVA |
494 | device->dma_device = parent; |
495 | } | |
1da177e4 | 496 | |
95ed644f | 497 | mutex_lock(&device_mutex); |
1da177e4 LT |
498 | |
499 | if (strchr(device->name, '%')) { | |
500 | ret = alloc_name(device->name); | |
501 | if (ret) | |
502 | goto out; | |
503 | } | |
504 | ||
505 | if (ib_device_check_mandatory(device)) { | |
506 | ret = -EINVAL; | |
507 | goto out; | |
508 | } | |
509 | ||
7738613e | 510 | ret = read_port_immutable(device); |
5eb620c8 | 511 | if (ret) { |
aba25a3e PP |
512 | pr_warn("Couldn't create per port immutable data %s\n", |
513 | device->name); | |
5eb620c8 YE |
514 | goto out; |
515 | } | |
516 | ||
d291f1a6 DJ |
517 | ret = setup_port_pkey_list(device); |
518 | if (ret) { | |
519 | pr_warn("Couldn't create per port_pkey_list\n"); | |
520 | goto out; | |
521 | } | |
522 | ||
03db3a2d MB |
523 | ret = ib_cache_setup_one(device); |
524 | if (ret) { | |
aba25a3e | 525 | pr_warn("Couldn't set up InfiniBand P_Key/GID cache\n"); |
4be3a4fa | 526 | goto port_cleanup; |
03db3a2d MB |
527 | } |
528 | ||
43579b5f PP |
529 | ret = ib_device_register_rdmacg(device); |
530 | if (ret) { | |
531 | pr_warn("Couldn't register device with rdma cgroup\n"); | |
4be3a4fa | 532 | goto cache_cleanup; |
43579b5f PP |
533 | } |
534 | ||
3e153a93 IW |
535 | memset(&device->attrs, 0, sizeof(device->attrs)); |
536 | ret = device->query_device(device, &device->attrs, &uhw); | |
537 | if (ret) { | |
aba25a3e | 538 | pr_warn("Couldn't query the device attributes\n"); |
2fb4f4ea | 539 | goto cg_cleanup; |
3e153a93 IW |
540 | } |
541 | ||
9a6edb60 | 542 | ret = ib_device_register_sysfs(device, port_callback); |
1da177e4 | 543 | if (ret) { |
aba25a3e PP |
544 | pr_warn("Couldn't register device %s with driver model\n", |
545 | device->name); | |
2fb4f4ea | 546 | goto cg_cleanup; |
1da177e4 LT |
547 | } |
548 | ||
1da177e4 LT |
549 | device->reg_state = IB_DEV_REGISTERED; |
550 | ||
b8071ad8 | 551 | list_for_each_entry(client, &client_list, list) |
b059e210 | 552 | if (!add_client_context(device, client) && client->add) |
b8071ad8 | 553 | client->add(device); |
1da177e4 | 554 | |
ecc82c53 | 555 | device->index = __dev_new_index(); |
5aa44bb9 HE |
556 | down_write(&lists_rwsem); |
557 | list_add_tail(&device->core_list, &device_list); | |
558 | up_write(&lists_rwsem); | |
4be3a4fa PP |
559 | mutex_unlock(&device_mutex); |
560 | return 0; | |
561 | ||
2fb4f4ea PP |
562 | cg_cleanup: |
563 | ib_device_unregister_rdmacg(device); | |
4be3a4fa PP |
564 | cache_cleanup: |
565 | ib_cache_cleanup_one(device); | |
566 | ib_cache_release_one(device); | |
567 | port_cleanup: | |
568 | kfree(device->port_immutable); | |
5aa44bb9 | 569 | out: |
95ed644f | 570 | mutex_unlock(&device_mutex); |
1da177e4 LT |
571 | return ret; |
572 | } | |
573 | EXPORT_SYMBOL(ib_register_device); | |
574 | ||
575 | /** | |
576 | * ib_unregister_device - Unregister an IB device | |
577 | * @device:Device to unregister | |
578 | * | |
579 | * Unregister an IB device. All clients will receive a remove callback. | |
580 | */ | |
581 | void ib_unregister_device(struct ib_device *device) | |
582 | { | |
1da177e4 LT |
583 | struct ib_client_data *context, *tmp; |
584 | unsigned long flags; | |
585 | ||
95ed644f | 586 | mutex_lock(&device_mutex); |
1da177e4 | 587 | |
5aa44bb9 HE |
588 | down_write(&lists_rwsem); |
589 | list_del(&device->core_list); | |
7c1eb45a HE |
590 | spin_lock_irqsave(&device->client_data_lock, flags); |
591 | list_for_each_entry_safe(context, tmp, &device->client_data_list, list) | |
592 | context->going_down = true; | |
593 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
594 | downgrade_write(&lists_rwsem); | |
5aa44bb9 | 595 | |
7c1eb45a HE |
596 | list_for_each_entry_safe(context, tmp, &device->client_data_list, |
597 | list) { | |
598 | if (context->client->remove) | |
599 | context->client->remove(device, context->data); | |
600 | } | |
601 | up_read(&lists_rwsem); | |
1da177e4 | 602 | |
02d8883f LR |
603 | rdma_restrack_clean(&device->res); |
604 | ||
43579b5f | 605 | ib_device_unregister_rdmacg(device); |
9206dff1 | 606 | ib_device_unregister_sysfs(device); |
06f8174a SS |
607 | |
608 | mutex_unlock(&device_mutex); | |
609 | ||
03db3a2d | 610 | ib_cache_cleanup_one(device); |
9206dff1 | 611 | |
d291f1a6 DJ |
612 | ib_security_destroy_port_pkey_list(device); |
613 | kfree(device->port_pkey_list); | |
614 | ||
7c1eb45a | 615 | down_write(&lists_rwsem); |
1da177e4 LT |
616 | spin_lock_irqsave(&device->client_data_lock, flags); |
617 | list_for_each_entry_safe(context, tmp, &device->client_data_list, list) | |
618 | kfree(context); | |
619 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
7c1eb45a | 620 | up_write(&lists_rwsem); |
1da177e4 LT |
621 | |
622 | device->reg_state = IB_DEV_UNREGISTERED; | |
623 | } | |
624 | EXPORT_SYMBOL(ib_unregister_device); | |
625 | ||
626 | /** | |
627 | * ib_register_client - Register an IB client | |
628 | * @client:Client to register | |
629 | * | |
630 | * Upper level users of the IB drivers can use ib_register_client() to | |
631 | * register callbacks for IB device addition and removal. When an IB | |
632 | * device is added, each registered client's add method will be called | |
633 | * (in the order the clients were registered), and when a device is | |
634 | * removed, each client's remove method will be called (in the reverse | |
635 | * order that clients were registered). In addition, when | |
636 | * ib_register_client() is called, the client will receive an add | |
637 | * callback for all devices already registered. | |
638 | */ | |
639 | int ib_register_client(struct ib_client *client) | |
640 | { | |
641 | struct ib_device *device; | |
642 | ||
95ed644f | 643 | mutex_lock(&device_mutex); |
1da177e4 | 644 | |
1da177e4 | 645 | list_for_each_entry(device, &device_list, core_list) |
b059e210 | 646 | if (!add_client_context(device, client) && client->add) |
1da177e4 LT |
647 | client->add(device); |
648 | ||
5aa44bb9 HE |
649 | down_write(&lists_rwsem); |
650 | list_add_tail(&client->list, &client_list); | |
651 | up_write(&lists_rwsem); | |
652 | ||
95ed644f | 653 | mutex_unlock(&device_mutex); |
1da177e4 LT |
654 | |
655 | return 0; | |
656 | } | |
657 | EXPORT_SYMBOL(ib_register_client); | |
658 | ||
659 | /** | |
660 | * ib_unregister_client - Unregister an IB client | |
661 | * @client:Client to unregister | |
662 | * | |
663 | * Upper level users use ib_unregister_client() to remove their client | |
664 | * registration. When ib_unregister_client() is called, the client | |
665 | * will receive a remove callback for each IB device still registered. | |
666 | */ | |
667 | void ib_unregister_client(struct ib_client *client) | |
668 | { | |
669 | struct ib_client_data *context, *tmp; | |
670 | struct ib_device *device; | |
671 | unsigned long flags; | |
672 | ||
95ed644f | 673 | mutex_lock(&device_mutex); |
1da177e4 | 674 | |
5aa44bb9 HE |
675 | down_write(&lists_rwsem); |
676 | list_del(&client->list); | |
677 | up_write(&lists_rwsem); | |
678 | ||
1da177e4 | 679 | list_for_each_entry(device, &device_list, core_list) { |
7c1eb45a | 680 | struct ib_client_data *found_context = NULL; |
1da177e4 | 681 | |
7c1eb45a | 682 | down_write(&lists_rwsem); |
1da177e4 LT |
683 | spin_lock_irqsave(&device->client_data_lock, flags); |
684 | list_for_each_entry_safe(context, tmp, &device->client_data_list, list) | |
685 | if (context->client == client) { | |
7c1eb45a HE |
686 | context->going_down = true; |
687 | found_context = context; | |
688 | break; | |
1da177e4 LT |
689 | } |
690 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
7c1eb45a HE |
691 | up_write(&lists_rwsem); |
692 | ||
693 | if (client->remove) | |
694 | client->remove(device, found_context ? | |
695 | found_context->data : NULL); | |
696 | ||
697 | if (!found_context) { | |
698 | pr_warn("No client context found for %s/%s\n", | |
699 | device->name, client->name); | |
700 | continue; | |
701 | } | |
702 | ||
703 | down_write(&lists_rwsem); | |
704 | spin_lock_irqsave(&device->client_data_lock, flags); | |
705 | list_del(&found_context->list); | |
706 | kfree(found_context); | |
707 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
708 | up_write(&lists_rwsem); | |
1da177e4 | 709 | } |
1da177e4 | 710 | |
95ed644f | 711 | mutex_unlock(&device_mutex); |
1da177e4 LT |
712 | } |
713 | EXPORT_SYMBOL(ib_unregister_client); | |
714 | ||
715 | /** | |
716 | * ib_get_client_data - Get IB client context | |
717 | * @device:Device to get context for | |
718 | * @client:Client to get context for | |
719 | * | |
720 | * ib_get_client_data() returns client context set with | |
721 | * ib_set_client_data(). | |
722 | */ | |
723 | void *ib_get_client_data(struct ib_device *device, struct ib_client *client) | |
724 | { | |
725 | struct ib_client_data *context; | |
726 | void *ret = NULL; | |
727 | unsigned long flags; | |
728 | ||
729 | spin_lock_irqsave(&device->client_data_lock, flags); | |
730 | list_for_each_entry(context, &device->client_data_list, list) | |
731 | if (context->client == client) { | |
732 | ret = context->data; | |
733 | break; | |
734 | } | |
735 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
736 | ||
737 | return ret; | |
738 | } | |
739 | EXPORT_SYMBOL(ib_get_client_data); | |
740 | ||
741 | /** | |
9cd330d3 | 742 | * ib_set_client_data - Set IB client context |
1da177e4 LT |
743 | * @device:Device to set context for |
744 | * @client:Client to set context for | |
745 | * @data:Context to set | |
746 | * | |
747 | * ib_set_client_data() sets client context that can be retrieved with | |
748 | * ib_get_client_data(). | |
749 | */ | |
750 | void ib_set_client_data(struct ib_device *device, struct ib_client *client, | |
751 | void *data) | |
752 | { | |
753 | struct ib_client_data *context; | |
754 | unsigned long flags; | |
755 | ||
756 | spin_lock_irqsave(&device->client_data_lock, flags); | |
757 | list_for_each_entry(context, &device->client_data_list, list) | |
758 | if (context->client == client) { | |
759 | context->data = data; | |
760 | goto out; | |
761 | } | |
762 | ||
aba25a3e PP |
763 | pr_warn("No client context found for %s/%s\n", |
764 | device->name, client->name); | |
1da177e4 LT |
765 | |
766 | out: | |
767 | spin_unlock_irqrestore(&device->client_data_lock, flags); | |
768 | } | |
769 | EXPORT_SYMBOL(ib_set_client_data); | |
770 | ||
771 | /** | |
772 | * ib_register_event_handler - Register an IB event handler | |
773 | * @event_handler:Handler to register | |
774 | * | |
775 | * ib_register_event_handler() registers an event handler that will be | |
776 | * called back when asynchronous IB events occur (as defined in | |
777 | * chapter 11 of the InfiniBand Architecture Specification). This | |
778 | * callback may occur in interrupt context. | |
779 | */ | |
dcc9881e | 780 | void ib_register_event_handler(struct ib_event_handler *event_handler) |
1da177e4 LT |
781 | { |
782 | unsigned long flags; | |
783 | ||
784 | spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); | |
785 | list_add_tail(&event_handler->list, | |
786 | &event_handler->device->event_handler_list); | |
787 | spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); | |
1da177e4 LT |
788 | } |
789 | EXPORT_SYMBOL(ib_register_event_handler); | |
790 | ||
791 | /** | |
792 | * ib_unregister_event_handler - Unregister an event handler | |
793 | * @event_handler:Handler to unregister | |
794 | * | |
795 | * Unregister an event handler registered with | |
796 | * ib_register_event_handler(). | |
797 | */ | |
dcc9881e | 798 | void ib_unregister_event_handler(struct ib_event_handler *event_handler) |
1da177e4 LT |
799 | { |
800 | unsigned long flags; | |
801 | ||
802 | spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); | |
803 | list_del(&event_handler->list); | |
804 | spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); | |
1da177e4 LT |
805 | } |
806 | EXPORT_SYMBOL(ib_unregister_event_handler); | |
807 | ||
808 | /** | |
809 | * ib_dispatch_event - Dispatch an asynchronous event | |
810 | * @event:Event to dispatch | |
811 | * | |
812 | * Low-level drivers must call ib_dispatch_event() to dispatch the | |
813 | * event to all registered event handlers when an asynchronous event | |
814 | * occurs. | |
815 | */ | |
816 | void ib_dispatch_event(struct ib_event *event) | |
817 | { | |
818 | unsigned long flags; | |
819 | struct ib_event_handler *handler; | |
820 | ||
821 | spin_lock_irqsave(&event->device->event_handler_lock, flags); | |
822 | ||
823 | list_for_each_entry(handler, &event->device->event_handler_list, list) | |
824 | handler->handler(handler, event); | |
825 | ||
826 | spin_unlock_irqrestore(&event->device->event_handler_lock, flags); | |
827 | } | |
828 | EXPORT_SYMBOL(ib_dispatch_event); | |
829 | ||
1da177e4 LT |
830 | /** |
831 | * ib_query_port - Query IB port attributes | |
832 | * @device:Device to query | |
833 | * @port_num:Port number to query | |
834 | * @port_attr:Port attributes | |
835 | * | |
836 | * ib_query_port() returns the attributes of a port through the | |
837 | * @port_attr pointer. | |
838 | */ | |
839 | int ib_query_port(struct ib_device *device, | |
840 | u8 port_num, | |
841 | struct ib_port_attr *port_attr) | |
842 | { | |
fad61ad4 EC |
843 | union ib_gid gid; |
844 | int err; | |
845 | ||
24dc831b | 846 | if (!rdma_is_port_valid(device, port_num)) |
116c0074 RD |
847 | return -EINVAL; |
848 | ||
fad61ad4 EC |
849 | memset(port_attr, 0, sizeof(*port_attr)); |
850 | err = device->query_port(device, port_num, port_attr); | |
851 | if (err || port_attr->subnet_prefix) | |
852 | return err; | |
853 | ||
d7012467 EC |
854 | if (rdma_port_get_link_layer(device, port_num) != IB_LINK_LAYER_INFINIBAND) |
855 | return 0; | |
856 | ||
fad61ad4 EC |
857 | err = ib_query_gid(device, port_num, 0, &gid, NULL); |
858 | if (err) | |
859 | return err; | |
860 | ||
861 | port_attr->subnet_prefix = be64_to_cpu(gid.global.subnet_prefix); | |
862 | return 0; | |
1da177e4 LT |
863 | } |
864 | EXPORT_SYMBOL(ib_query_port); | |
865 | ||
866 | /** | |
867 | * ib_query_gid - Get GID table entry | |
868 | * @device:Device to query | |
869 | * @port_num:Port number to query | |
870 | * @index:GID table index to query | |
871 | * @gid:Returned GID | |
55ee3ab2 MB |
872 | * @attr: Returned GID attributes related to this GID index (only in RoCE). |
873 | * NULL means ignore. | |
1da177e4 LT |
874 | * |
875 | * ib_query_gid() fetches the specified GID table entry. | |
876 | */ | |
877 | int ib_query_gid(struct ib_device *device, | |
55ee3ab2 MB |
878 | u8 port_num, int index, union ib_gid *gid, |
879 | struct ib_gid_attr *attr) | |
1da177e4 | 880 | { |
03db3a2d | 881 | if (rdma_cap_roce_gid_table(device, port_num)) |
55ee3ab2 MB |
882 | return ib_get_cached_gid(device, port_num, index, gid, attr); |
883 | ||
884 | if (attr) | |
885 | return -EINVAL; | |
03db3a2d | 886 | |
1da177e4 LT |
887 | return device->query_gid(device, port_num, index, gid); |
888 | } | |
889 | EXPORT_SYMBOL(ib_query_gid); | |
890 | ||
03db3a2d MB |
891 | /** |
892 | * ib_enum_roce_netdev - enumerate all RoCE ports | |
893 | * @ib_dev : IB device we want to query | |
894 | * @filter: Should we call the callback? | |
895 | * @filter_cookie: Cookie passed to filter | |
896 | * @cb: Callback to call for each found RoCE ports | |
897 | * @cookie: Cookie passed back to the callback | |
898 | * | |
899 | * Enumerates all of the physical RoCE ports of ib_dev | |
900 | * which are related to netdevice and calls callback() on each | |
901 | * device for which filter() function returns non zero. | |
902 | */ | |
903 | void ib_enum_roce_netdev(struct ib_device *ib_dev, | |
904 | roce_netdev_filter filter, | |
905 | void *filter_cookie, | |
906 | roce_netdev_callback cb, | |
907 | void *cookie) | |
908 | { | |
909 | u8 port; | |
910 | ||
911 | for (port = rdma_start_port(ib_dev); port <= rdma_end_port(ib_dev); | |
912 | port++) | |
913 | if (rdma_protocol_roce(ib_dev, port)) { | |
914 | struct net_device *idev = NULL; | |
915 | ||
916 | if (ib_dev->get_netdev) | |
917 | idev = ib_dev->get_netdev(ib_dev, port); | |
918 | ||
919 | if (idev && | |
920 | idev->reg_state >= NETREG_UNREGISTERED) { | |
921 | dev_put(idev); | |
922 | idev = NULL; | |
923 | } | |
924 | ||
925 | if (filter(ib_dev, port, idev, filter_cookie)) | |
926 | cb(ib_dev, port, idev, cookie); | |
927 | ||
928 | if (idev) | |
929 | dev_put(idev); | |
930 | } | |
931 | } | |
932 | ||
933 | /** | |
934 | * ib_enum_all_roce_netdevs - enumerate all RoCE devices | |
935 | * @filter: Should we call the callback? | |
936 | * @filter_cookie: Cookie passed to filter | |
937 | * @cb: Callback to call for each found RoCE ports | |
938 | * @cookie: Cookie passed back to the callback | |
939 | * | |
940 | * Enumerates all RoCE devices' physical ports which are related | |
941 | * to netdevices and calls callback() on each device for which | |
942 | * filter() function returns non zero. | |
943 | */ | |
944 | void ib_enum_all_roce_netdevs(roce_netdev_filter filter, | |
945 | void *filter_cookie, | |
946 | roce_netdev_callback cb, | |
947 | void *cookie) | |
948 | { | |
949 | struct ib_device *dev; | |
950 | ||
951 | down_read(&lists_rwsem); | |
952 | list_for_each_entry(dev, &device_list, core_list) | |
953 | ib_enum_roce_netdev(dev, filter, filter_cookie, cb, cookie); | |
954 | up_read(&lists_rwsem); | |
8030c835 LR |
955 | } |
956 | ||
957 | /** | |
958 | * ib_enum_all_devs - enumerate all ib_devices | |
959 | * @cb: Callback to call for each found ib_device | |
960 | * | |
961 | * Enumerates all ib_devices and calls callback() on each device. | |
962 | */ | |
963 | int ib_enum_all_devs(nldev_callback nldev_cb, struct sk_buff *skb, | |
964 | struct netlink_callback *cb) | |
965 | { | |
966 | struct ib_device *dev; | |
967 | unsigned int idx = 0; | |
968 | int ret = 0; | |
969 | ||
970 | down_read(&lists_rwsem); | |
971 | list_for_each_entry(dev, &device_list, core_list) { | |
972 | ret = nldev_cb(dev, skb, cb, idx); | |
973 | if (ret) | |
974 | break; | |
975 | idx++; | |
976 | } | |
977 | ||
978 | up_read(&lists_rwsem); | |
979 | return ret; | |
03db3a2d MB |
980 | } |
981 | ||
1da177e4 LT |
982 | /** |
983 | * ib_query_pkey - Get P_Key table entry | |
984 | * @device:Device to query | |
985 | * @port_num:Port number to query | |
986 | * @index:P_Key table index to query | |
987 | * @pkey:Returned P_Key | |
988 | * | |
989 | * ib_query_pkey() fetches the specified P_Key table entry. | |
990 | */ | |
991 | int ib_query_pkey(struct ib_device *device, | |
992 | u8 port_num, u16 index, u16 *pkey) | |
993 | { | |
994 | return device->query_pkey(device, port_num, index, pkey); | |
995 | } | |
996 | EXPORT_SYMBOL(ib_query_pkey); | |
997 | ||
998 | /** | |
999 | * ib_modify_device - Change IB device attributes | |
1000 | * @device:Device to modify | |
1001 | * @device_modify_mask:Mask of attributes to change | |
1002 | * @device_modify:New attribute values | |
1003 | * | |
1004 | * ib_modify_device() changes a device's attributes as specified by | |
1005 | * the @device_modify_mask and @device_modify structure. | |
1006 | */ | |
1007 | int ib_modify_device(struct ib_device *device, | |
1008 | int device_modify_mask, | |
1009 | struct ib_device_modify *device_modify) | |
1010 | { | |
10e1b54b BVA |
1011 | if (!device->modify_device) |
1012 | return -ENOSYS; | |
1013 | ||
1da177e4 LT |
1014 | return device->modify_device(device, device_modify_mask, |
1015 | device_modify); | |
1016 | } | |
1017 | EXPORT_SYMBOL(ib_modify_device); | |
1018 | ||
1019 | /** | |
1020 | * ib_modify_port - Modifies the attributes for the specified port. | |
1021 | * @device: The device to modify. | |
1022 | * @port_num: The number of the port to modify. | |
1023 | * @port_modify_mask: Mask used to specify which attributes of the port | |
1024 | * to change. | |
1025 | * @port_modify: New attribute values for the port. | |
1026 | * | |
1027 | * ib_modify_port() changes a port's attributes as specified by the | |
1028 | * @port_modify_mask and @port_modify structure. | |
1029 | */ | |
1030 | int ib_modify_port(struct ib_device *device, | |
1031 | u8 port_num, int port_modify_mask, | |
1032 | struct ib_port_modify *port_modify) | |
1033 | { | |
61e0962d | 1034 | int rc; |
10e1b54b | 1035 | |
24dc831b | 1036 | if (!rdma_is_port_valid(device, port_num)) |
116c0074 RD |
1037 | return -EINVAL; |
1038 | ||
61e0962d SX |
1039 | if (device->modify_port) |
1040 | rc = device->modify_port(device, port_num, port_modify_mask, | |
1041 | port_modify); | |
1042 | else | |
1043 | rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS; | |
1044 | return rc; | |
1da177e4 LT |
1045 | } |
1046 | EXPORT_SYMBOL(ib_modify_port); | |
1047 | ||
5eb620c8 YE |
1048 | /** |
1049 | * ib_find_gid - Returns the port number and GID table index where | |
dbb12562 | 1050 | * a specified GID value occurs. Its searches only for IB link layer. |
5eb620c8 YE |
1051 | * @device: The device to query. |
1052 | * @gid: The GID value to search for. | |
55ee3ab2 | 1053 | * @ndev: The ndev related to the GID to search for. |
5eb620c8 YE |
1054 | * @port_num: The port number of the device where the GID value was found. |
1055 | * @index: The index into the GID table where the GID was found. This | |
1056 | * parameter may be NULL. | |
1057 | */ | |
1058 | int ib_find_gid(struct ib_device *device, union ib_gid *gid, | |
dbb12562 | 1059 | struct net_device *ndev, u8 *port_num, u16 *index) |
5eb620c8 YE |
1060 | { |
1061 | union ib_gid tmp_gid; | |
1062 | int ret, port, i; | |
1063 | ||
0cf18d77 | 1064 | for (port = rdma_start_port(device); port <= rdma_end_port(device); ++port) { |
dbb12562 | 1065 | if (rdma_cap_roce_gid_table(device, port)) |
b39ffa1d MB |
1066 | continue; |
1067 | ||
7738613e | 1068 | for (i = 0; i < device->port_immutable[port].gid_tbl_len; ++i) { |
55ee3ab2 | 1069 | ret = ib_query_gid(device, port, i, &tmp_gid, NULL); |
5eb620c8 YE |
1070 | if (ret) |
1071 | return ret; | |
1072 | if (!memcmp(&tmp_gid, gid, sizeof *gid)) { | |
1073 | *port_num = port; | |
1074 | if (index) | |
1075 | *index = i; | |
1076 | return 0; | |
1077 | } | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | return -ENOENT; | |
1082 | } | |
1083 | EXPORT_SYMBOL(ib_find_gid); | |
1084 | ||
1085 | /** | |
1086 | * ib_find_pkey - Returns the PKey table index where a specified | |
1087 | * PKey value occurs. | |
1088 | * @device: The device to query. | |
1089 | * @port_num: The port number of the device to search for the PKey. | |
1090 | * @pkey: The PKey value to search for. | |
1091 | * @index: The index into the PKey table where the PKey was found. | |
1092 | */ | |
1093 | int ib_find_pkey(struct ib_device *device, | |
1094 | u8 port_num, u16 pkey, u16 *index) | |
1095 | { | |
1096 | int ret, i; | |
1097 | u16 tmp_pkey; | |
ff7166c4 | 1098 | int partial_ix = -1; |
5eb620c8 | 1099 | |
7738613e | 1100 | for (i = 0; i < device->port_immutable[port_num].pkey_tbl_len; ++i) { |
5eb620c8 YE |
1101 | ret = ib_query_pkey(device, port_num, i, &tmp_pkey); |
1102 | if (ret) | |
1103 | return ret; | |
36026ecc | 1104 | if ((pkey & 0x7fff) == (tmp_pkey & 0x7fff)) { |
ff7166c4 JM |
1105 | /* if there is full-member pkey take it.*/ |
1106 | if (tmp_pkey & 0x8000) { | |
1107 | *index = i; | |
1108 | return 0; | |
1109 | } | |
1110 | if (partial_ix < 0) | |
1111 | partial_ix = i; | |
5eb620c8 YE |
1112 | } |
1113 | } | |
1114 | ||
ff7166c4 JM |
1115 | /*no full-member, if exists take the limited*/ |
1116 | if (partial_ix >= 0) { | |
1117 | *index = partial_ix; | |
1118 | return 0; | |
1119 | } | |
5eb620c8 YE |
1120 | return -ENOENT; |
1121 | } | |
1122 | EXPORT_SYMBOL(ib_find_pkey); | |
1123 | ||
9268f72d YK |
1124 | /** |
1125 | * ib_get_net_dev_by_params() - Return the appropriate net_dev | |
1126 | * for a received CM request | |
1127 | * @dev: An RDMA device on which the request has been received. | |
1128 | * @port: Port number on the RDMA device. | |
1129 | * @pkey: The Pkey the request came on. | |
1130 | * @gid: A GID that the net_dev uses to communicate. | |
1131 | * @addr: Contains the IP address that the request specified as its | |
1132 | * destination. | |
1133 | */ | |
1134 | struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, | |
1135 | u8 port, | |
1136 | u16 pkey, | |
1137 | const union ib_gid *gid, | |
1138 | const struct sockaddr *addr) | |
1139 | { | |
1140 | struct net_device *net_dev = NULL; | |
1141 | struct ib_client_data *context; | |
1142 | ||
1143 | if (!rdma_protocol_ib(dev, port)) | |
1144 | return NULL; | |
1145 | ||
1146 | down_read(&lists_rwsem); | |
1147 | ||
1148 | list_for_each_entry(context, &dev->client_data_list, list) { | |
1149 | struct ib_client *client = context->client; | |
1150 | ||
1151 | if (context->going_down) | |
1152 | continue; | |
1153 | ||
1154 | if (client->get_net_dev_by_params) { | |
1155 | net_dev = client->get_net_dev_by_params(dev, port, pkey, | |
1156 | gid, addr, | |
1157 | context->data); | |
1158 | if (net_dev) | |
1159 | break; | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | up_read(&lists_rwsem); | |
1164 | ||
1165 | return net_dev; | |
1166 | } | |
1167 | EXPORT_SYMBOL(ib_get_net_dev_by_params); | |
1168 | ||
d0e312fe | 1169 | static const struct rdma_nl_cbs ibnl_ls_cb_table[RDMA_NL_LS_NUM_OPS] = { |
735c631a | 1170 | [RDMA_NL_LS_OP_RESOLVE] = { |
647c75ac | 1171 | .doit = ib_nl_handle_resolve_resp, |
e3a2b93d LR |
1172 | .flags = RDMA_NL_ADMIN_PERM, |
1173 | }, | |
735c631a | 1174 | [RDMA_NL_LS_OP_SET_TIMEOUT] = { |
647c75ac | 1175 | .doit = ib_nl_handle_set_timeout, |
e3a2b93d LR |
1176 | .flags = RDMA_NL_ADMIN_PERM, |
1177 | }, | |
ae43f828 | 1178 | [RDMA_NL_LS_OP_IP_RESOLVE] = { |
647c75ac | 1179 | .doit = ib_nl_handle_ip_res_resp, |
e3a2b93d LR |
1180 | .flags = RDMA_NL_ADMIN_PERM, |
1181 | }, | |
735c631a MB |
1182 | }; |
1183 | ||
1da177e4 LT |
1184 | static int __init ib_core_init(void) |
1185 | { | |
1186 | int ret; | |
1187 | ||
f0626710 TH |
1188 | ib_wq = alloc_workqueue("infiniband", 0, 0); |
1189 | if (!ib_wq) | |
1190 | return -ENOMEM; | |
1191 | ||
14d3a3b2 | 1192 | ib_comp_wq = alloc_workqueue("ib-comp-wq", |
b7363e67 | 1193 | WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_SYSFS, 0); |
14d3a3b2 CH |
1194 | if (!ib_comp_wq) { |
1195 | ret = -ENOMEM; | |
1196 | goto err; | |
1197 | } | |
1198 | ||
55aeed06 | 1199 | ret = class_register(&ib_class); |
fd75c789 | 1200 | if (ret) { |
aba25a3e | 1201 | pr_warn("Couldn't create InfiniBand device class\n"); |
14d3a3b2 | 1202 | goto err_comp; |
fd75c789 | 1203 | } |
1da177e4 | 1204 | |
c9901724 | 1205 | ret = rdma_nl_init(); |
b2cbae2c | 1206 | if (ret) { |
c9901724 | 1207 | pr_warn("Couldn't init IB netlink interface: err %d\n", ret); |
b2cbae2c RD |
1208 | goto err_sysfs; |
1209 | } | |
1210 | ||
e3f20f02 LR |
1211 | ret = addr_init(); |
1212 | if (ret) { | |
1213 | pr_warn("Could't init IB address resolution\n"); | |
1214 | goto err_ibnl; | |
1215 | } | |
1216 | ||
4c2cb422 MB |
1217 | ret = ib_mad_init(); |
1218 | if (ret) { | |
1219 | pr_warn("Couldn't init IB MAD\n"); | |
1220 | goto err_addr; | |
1221 | } | |
1222 | ||
c2e49c92 MB |
1223 | ret = ib_sa_init(); |
1224 | if (ret) { | |
1225 | pr_warn("Couldn't init SA\n"); | |
1226 | goto err_mad; | |
1227 | } | |
1228 | ||
8f408ab6 DJ |
1229 | ret = register_lsm_notifier(&ibdev_lsm_nb); |
1230 | if (ret) { | |
1231 | pr_warn("Couldn't register LSM notifier. ret %d\n", ret); | |
c9901724 | 1232 | goto err_sa; |
8f408ab6 DJ |
1233 | } |
1234 | ||
6c80b41a | 1235 | nldev_init(); |
c9901724 | 1236 | rdma_nl_register(RDMA_NL_LS, ibnl_ls_cb_table); |
03db3a2d | 1237 | ib_cache_setup(); |
1da177e4 | 1238 | |
fd75c789 NM |
1239 | return 0; |
1240 | ||
735c631a MB |
1241 | err_sa: |
1242 | ib_sa_cleanup(); | |
c2e49c92 MB |
1243 | err_mad: |
1244 | ib_mad_cleanup(); | |
4c2cb422 MB |
1245 | err_addr: |
1246 | addr_cleanup(); | |
e3f20f02 | 1247 | err_ibnl: |
c9901724 | 1248 | rdma_nl_exit(); |
fd75c789 | 1249 | err_sysfs: |
55aeed06 | 1250 | class_unregister(&ib_class); |
14d3a3b2 CH |
1251 | err_comp: |
1252 | destroy_workqueue(ib_comp_wq); | |
fd75c789 NM |
1253 | err: |
1254 | destroy_workqueue(ib_wq); | |
1da177e4 LT |
1255 | return ret; |
1256 | } | |
1257 | ||
1258 | static void __exit ib_core_cleanup(void) | |
1259 | { | |
1260 | ib_cache_cleanup(); | |
6c80b41a | 1261 | nldev_exit(); |
c9901724 LR |
1262 | rdma_nl_unregister(RDMA_NL_LS); |
1263 | unregister_lsm_notifier(&ibdev_lsm_nb); | |
c2e49c92 | 1264 | ib_sa_cleanup(); |
4c2cb422 | 1265 | ib_mad_cleanup(); |
e3f20f02 | 1266 | addr_cleanup(); |
c9901724 | 1267 | rdma_nl_exit(); |
55aeed06 | 1268 | class_unregister(&ib_class); |
14d3a3b2 | 1269 | destroy_workqueue(ib_comp_wq); |
f7c6a7b5 | 1270 | /* Make sure that any pending umem accounting work is done. */ |
f0626710 | 1271 | destroy_workqueue(ib_wq); |
1da177e4 LT |
1272 | } |
1273 | ||
e3bf14bd JG |
1274 | MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_LS, 4); |
1275 | ||
a9cd1a67 | 1276 | subsys_initcall(ib_core_init); |
1da177e4 | 1277 | module_exit(ib_core_cleanup); |