Commit | Line | Data |
---|---|---|
bc38a6ab RD |
1 | /* |
2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. | |
33b9b3ee | 3 | * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. |
2a1d9b7f RD |
4 | * Copyright (c) 2005 Mellanox Technologies. All rights reserved. |
5 | * Copyright (c) 2005 Voltaire, Inc. All rights reserved. | |
67cdb40c | 6 | * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
bc38a6ab RD |
7 | * |
8 | * This software is available to you under a choice of one of two | |
9 | * licenses. You may choose to be licensed under the terms of the GNU | |
10 | * General Public License (GPL) Version 2, available from the file | |
11 | * COPYING in the main directory of this source tree, or the | |
12 | * OpenIB.org BSD license below: | |
13 | * | |
14 | * Redistribution and use in source and binary forms, with or | |
15 | * without modification, are permitted provided that the following | |
16 | * conditions are met: | |
17 | * | |
18 | * - Redistributions of source code must retain the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer. | |
21 | * | |
22 | * - Redistributions in binary form must reproduce the above | |
23 | * copyright notice, this list of conditions and the following | |
24 | * disclaimer in the documentation and/or other materials | |
25 | * provided with the distribution. | |
26 | * | |
27 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
28 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
29 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
30 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
31 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
32 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
33 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
34 | * SOFTWARE. | |
bc38a6ab RD |
35 | */ |
36 | ||
37 | #include <linux/module.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/device.h> | |
40 | #include <linux/err.h> | |
41 | #include <linux/fs.h> | |
42 | #include <linux/poll.h> | |
a99bbaf5 | 43 | #include <linux/sched.h> |
bc38a6ab | 44 | #include <linux/file.h> |
70a30e16 | 45 | #include <linux/cdev.h> |
a265e558 | 46 | #include <linux/anon_inodes.h> |
5a0e3ad6 | 47 | #include <linux/slab.h> |
bc38a6ab RD |
48 | |
49 | #include <asm/uaccess.h> | |
50 | ||
55ac348c JG |
51 | #include <rdma/ib.h> |
52 | ||
bc38a6ab RD |
53 | #include "uverbs.h" |
54 | ||
55 | MODULE_AUTHOR("Roland Dreier"); | |
56 | MODULE_DESCRIPTION("InfiniBand userspace verbs access"); | |
57 | MODULE_LICENSE("Dual BSD/GPL"); | |
58 | ||
bc38a6ab RD |
59 | enum { |
60 | IB_UVERBS_MAJOR = 231, | |
61 | IB_UVERBS_BASE_MINOR = 192, | |
62 | IB_UVERBS_MAX_DEVICES = 32 | |
63 | }; | |
64 | ||
65 | #define IB_UVERBS_BASE_DEV MKDEV(IB_UVERBS_MAJOR, IB_UVERBS_BASE_MINOR) | |
66 | ||
70a30e16 RD |
67 | static struct class *uverbs_class; |
68 | ||
9ead190b | 69 | DEFINE_SPINLOCK(ib_uverbs_idr_lock); |
bc38a6ab RD |
70 | DEFINE_IDR(ib_uverbs_pd_idr); |
71 | DEFINE_IDR(ib_uverbs_mr_idr); | |
72 | DEFINE_IDR(ib_uverbs_mw_idr); | |
73 | DEFINE_IDR(ib_uverbs_ah_idr); | |
74 | DEFINE_IDR(ib_uverbs_cq_idr); | |
75 | DEFINE_IDR(ib_uverbs_qp_idr); | |
f520ba5a | 76 | DEFINE_IDR(ib_uverbs_srq_idr); |
53d0bd1e | 77 | DEFINE_IDR(ib_uverbs_xrcd_idr); |
bc38a6ab | 78 | |
6276e08a | 79 | static DEFINE_SPINLOCK(map_lock); |
bc38a6ab RD |
80 | static DECLARE_BITMAP(dev_map, IB_UVERBS_MAX_DEVICES); |
81 | ||
82 | static ssize_t (*uverbs_cmd_table[])(struct ib_uverbs_file *file, | |
83 | const char __user *buf, int in_len, | |
84 | int out_len) = { | |
9afed76d AC |
85 | [IB_USER_VERBS_CMD_GET_CONTEXT] = ib_uverbs_get_context, |
86 | [IB_USER_VERBS_CMD_QUERY_DEVICE] = ib_uverbs_query_device, | |
87 | [IB_USER_VERBS_CMD_QUERY_PORT] = ib_uverbs_query_port, | |
88 | [IB_USER_VERBS_CMD_ALLOC_PD] = ib_uverbs_alloc_pd, | |
89 | [IB_USER_VERBS_CMD_DEALLOC_PD] = ib_uverbs_dealloc_pd, | |
90 | [IB_USER_VERBS_CMD_REG_MR] = ib_uverbs_reg_mr, | |
91 | [IB_USER_VERBS_CMD_DEREG_MR] = ib_uverbs_dereg_mr, | |
6b52a12b SM |
92 | [IB_USER_VERBS_CMD_ALLOC_MW] = ib_uverbs_alloc_mw, |
93 | [IB_USER_VERBS_CMD_DEALLOC_MW] = ib_uverbs_dealloc_mw, | |
6b73597e | 94 | [IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL] = ib_uverbs_create_comp_channel, |
9afed76d AC |
95 | [IB_USER_VERBS_CMD_CREATE_CQ] = ib_uverbs_create_cq, |
96 | [IB_USER_VERBS_CMD_RESIZE_CQ] = ib_uverbs_resize_cq, | |
97 | [IB_USER_VERBS_CMD_POLL_CQ] = ib_uverbs_poll_cq, | |
98 | [IB_USER_VERBS_CMD_REQ_NOTIFY_CQ] = ib_uverbs_req_notify_cq, | |
99 | [IB_USER_VERBS_CMD_DESTROY_CQ] = ib_uverbs_destroy_cq, | |
100 | [IB_USER_VERBS_CMD_CREATE_QP] = ib_uverbs_create_qp, | |
101 | [IB_USER_VERBS_CMD_QUERY_QP] = ib_uverbs_query_qp, | |
102 | [IB_USER_VERBS_CMD_MODIFY_QP] = ib_uverbs_modify_qp, | |
103 | [IB_USER_VERBS_CMD_DESTROY_QP] = ib_uverbs_destroy_qp, | |
104 | [IB_USER_VERBS_CMD_POST_SEND] = ib_uverbs_post_send, | |
105 | [IB_USER_VERBS_CMD_POST_RECV] = ib_uverbs_post_recv, | |
106 | [IB_USER_VERBS_CMD_POST_SRQ_RECV] = ib_uverbs_post_srq_recv, | |
107 | [IB_USER_VERBS_CMD_CREATE_AH] = ib_uverbs_create_ah, | |
108 | [IB_USER_VERBS_CMD_DESTROY_AH] = ib_uverbs_destroy_ah, | |
109 | [IB_USER_VERBS_CMD_ATTACH_MCAST] = ib_uverbs_attach_mcast, | |
110 | [IB_USER_VERBS_CMD_DETACH_MCAST] = ib_uverbs_detach_mcast, | |
111 | [IB_USER_VERBS_CMD_CREATE_SRQ] = ib_uverbs_create_srq, | |
112 | [IB_USER_VERBS_CMD_MODIFY_SRQ] = ib_uverbs_modify_srq, | |
113 | [IB_USER_VERBS_CMD_QUERY_SRQ] = ib_uverbs_query_srq, | |
114 | [IB_USER_VERBS_CMD_DESTROY_SRQ] = ib_uverbs_destroy_srq, | |
53d0bd1e SH |
115 | [IB_USER_VERBS_CMD_OPEN_XRCD] = ib_uverbs_open_xrcd, |
116 | [IB_USER_VERBS_CMD_CLOSE_XRCD] = ib_uverbs_close_xrcd, | |
42849b26 SH |
117 | [IB_USER_VERBS_CMD_CREATE_XSRQ] = ib_uverbs_create_xsrq, |
118 | [IB_USER_VERBS_CMD_OPEN_QP] = ib_uverbs_open_qp | |
bc38a6ab RD |
119 | }; |
120 | ||
bc38a6ab RD |
121 | static void ib_uverbs_add_one(struct ib_device *device); |
122 | static void ib_uverbs_remove_one(struct ib_device *device); | |
123 | ||
caf23350 | 124 | static void ib_uverbs_release_dev(struct kobject *kobj) |
70a30e16 RD |
125 | { |
126 | struct ib_uverbs_device *dev = | |
caf23350 | 127 | container_of(kobj, struct ib_uverbs_device, kobj); |
70a30e16 | 128 | |
caf23350 | 129 | kfree(dev); |
70a30e16 RD |
130 | } |
131 | ||
caf23350 YH |
132 | static struct kobj_type ib_uverbs_dev_ktype = { |
133 | .release = ib_uverbs_release_dev, | |
134 | }; | |
135 | ||
04d29b0e RD |
136 | static void ib_uverbs_release_event_file(struct kref *ref) |
137 | { | |
138 | struct ib_uverbs_event_file *file = | |
139 | container_of(ref, struct ib_uverbs_event_file, ref); | |
140 | ||
141 | kfree(file); | |
142 | } | |
143 | ||
70a30e16 RD |
144 | void ib_uverbs_release_ucq(struct ib_uverbs_file *file, |
145 | struct ib_uverbs_event_file *ev_file, | |
146 | struct ib_ucq_object *uobj) | |
147 | { | |
148 | struct ib_uverbs_event *evt, *tmp; | |
149 | ||
150 | if (ev_file) { | |
151 | spin_lock_irq(&ev_file->lock); | |
152 | list_for_each_entry_safe(evt, tmp, &uobj->comp_list, obj_list) { | |
153 | list_del(&evt->list); | |
154 | kfree(evt); | |
155 | } | |
156 | spin_unlock_irq(&ev_file->lock); | |
157 | ||
158 | kref_put(&ev_file->ref, ib_uverbs_release_event_file); | |
159 | } | |
160 | ||
161 | spin_lock_irq(&file->async_file->lock); | |
162 | list_for_each_entry_safe(evt, tmp, &uobj->async_list, obj_list) { | |
163 | list_del(&evt->list); | |
164 | kfree(evt); | |
165 | } | |
166 | spin_unlock_irq(&file->async_file->lock); | |
167 | } | |
168 | ||
169 | void ib_uverbs_release_uevent(struct ib_uverbs_file *file, | |
170 | struct ib_uevent_object *uobj) | |
171 | { | |
172 | struct ib_uverbs_event *evt, *tmp; | |
173 | ||
174 | spin_lock_irq(&file->async_file->lock); | |
175 | list_for_each_entry_safe(evt, tmp, &uobj->event_list, obj_list) { | |
176 | list_del(&evt->list); | |
177 | kfree(evt); | |
178 | } | |
179 | spin_unlock_irq(&file->async_file->lock); | |
180 | } | |
181 | ||
f4e40156 JM |
182 | static void ib_uverbs_detach_umcast(struct ib_qp *qp, |
183 | struct ib_uqp_object *uobj) | |
184 | { | |
185 | struct ib_uverbs_mcast_entry *mcast, *tmp; | |
186 | ||
187 | list_for_each_entry_safe(mcast, tmp, &uobj->mcast_list, list) { | |
188 | ib_detach_mcast(qp, &mcast->gid, mcast->lid); | |
189 | list_del(&mcast->list); | |
190 | kfree(mcast); | |
191 | } | |
192 | } | |
193 | ||
70a30e16 RD |
194 | static int ib_uverbs_cleanup_ucontext(struct ib_uverbs_file *file, |
195 | struct ib_ucontext *context) | |
bc38a6ab RD |
196 | { |
197 | struct ib_uobject *uobj, *tmp; | |
198 | ||
199 | if (!context) | |
200 | return 0; | |
201 | ||
f7c6a7b5 RD |
202 | context->closing = 1; |
203 | ||
67cdb40c | 204 | list_for_each_entry_safe(uobj, tmp, &context->ah_list, list) { |
9ead190b RD |
205 | struct ib_ah *ah = uobj->object; |
206 | ||
207 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c | 208 | ib_destroy_ah(ah); |
67cdb40c RD |
209 | kfree(uobj); |
210 | } | |
bc38a6ab | 211 | |
6b52a12b SM |
212 | /* Remove MWs before QPs, in order to support type 2A MWs. */ |
213 | list_for_each_entry_safe(uobj, tmp, &context->mw_list, list) { | |
214 | struct ib_mw *mw = uobj->object; | |
215 | ||
216 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
217 | ib_dealloc_mw(mw); | |
218 | kfree(uobj); | |
219 | } | |
220 | ||
bc38a6ab | 221 | list_for_each_entry_safe(uobj, tmp, &context->qp_list, list) { |
9ead190b | 222 | struct ib_qp *qp = uobj->object; |
f4e40156 JM |
223 | struct ib_uqp_object *uqp = |
224 | container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
9ead190b RD |
225 | |
226 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); | |
52aac91d | 227 | if (qp == qp->real_qp) |
b93f3c18 | 228 | ib_uverbs_detach_umcast(qp, uqp); |
52aac91d | 229 | ib_destroy_qp(qp); |
f4e40156 JM |
230 | ib_uverbs_release_uevent(file, &uqp->uevent); |
231 | kfree(uqp); | |
bc38a6ab RD |
232 | } |
233 | ||
234 | list_for_each_entry_safe(uobj, tmp, &context->cq_list, list) { | |
9ead190b | 235 | struct ib_cq *cq = uobj->object; |
70a30e16 RD |
236 | struct ib_uverbs_event_file *ev_file = cq->cq_context; |
237 | struct ib_ucq_object *ucq = | |
238 | container_of(uobj, struct ib_ucq_object, uobject); | |
9ead190b RD |
239 | |
240 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); | |
bc38a6ab | 241 | ib_destroy_cq(cq); |
70a30e16 RD |
242 | ib_uverbs_release_ucq(file, ev_file, ucq); |
243 | kfree(ucq); | |
bc38a6ab RD |
244 | } |
245 | ||
f520ba5a | 246 | list_for_each_entry_safe(uobj, tmp, &context->srq_list, list) { |
9ead190b | 247 | struct ib_srq *srq = uobj->object; |
70a30e16 RD |
248 | struct ib_uevent_object *uevent = |
249 | container_of(uobj, struct ib_uevent_object, uobject); | |
9ead190b RD |
250 | |
251 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); | |
f520ba5a | 252 | ib_destroy_srq(srq); |
70a30e16 RD |
253 | ib_uverbs_release_uevent(file, uevent); |
254 | kfree(uevent); | |
f520ba5a RD |
255 | } |
256 | ||
bc38a6ab | 257 | list_for_each_entry_safe(uobj, tmp, &context->mr_list, list) { |
9ead190b | 258 | struct ib_mr *mr = uobj->object; |
bc38a6ab | 259 | |
9ead190b | 260 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 261 | ib_dereg_mr(mr); |
f7c6a7b5 | 262 | kfree(uobj); |
bc38a6ab RD |
263 | } |
264 | ||
53d0bd1e SH |
265 | mutex_lock(&file->device->xrcd_tree_mutex); |
266 | list_for_each_entry_safe(uobj, tmp, &context->xrcd_list, list) { | |
267 | struct ib_xrcd *xrcd = uobj->object; | |
268 | struct ib_uxrcd_object *uxrcd = | |
269 | container_of(uobj, struct ib_uxrcd_object, uobject); | |
270 | ||
271 | idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj); | |
272 | ib_uverbs_dealloc_xrcd(file->device, xrcd); | |
273 | kfree(uxrcd); | |
274 | } | |
275 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
276 | ||
bc38a6ab | 277 | list_for_each_entry_safe(uobj, tmp, &context->pd_list, list) { |
9ead190b RD |
278 | struct ib_pd *pd = uobj->object; |
279 | ||
280 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 281 | ib_dealloc_pd(pd); |
bc38a6ab RD |
282 | kfree(uobj); |
283 | } | |
284 | ||
bc38a6ab RD |
285 | return context->device->dealloc_ucontext(context); |
286 | } | |
287 | ||
caf23350 YH |
288 | static void ib_uverbs_comp_dev(struct ib_uverbs_device *dev) |
289 | { | |
290 | complete(&dev->comp); | |
291 | } | |
292 | ||
bc38a6ab RD |
293 | static void ib_uverbs_release_file(struct kref *ref) |
294 | { | |
295 | struct ib_uverbs_file *file = | |
296 | container_of(ref, struct ib_uverbs_file, ref); | |
297 | ||
298 | module_put(file->device->ib_dev->owner); | |
caf23350 YH |
299 | if (atomic_dec_and_test(&file->device->refcount)) |
300 | ib_uverbs_comp_dev(file->device); | |
70a30e16 | 301 | |
bc38a6ab RD |
302 | kfree(file); |
303 | } | |
304 | ||
305 | static ssize_t ib_uverbs_event_read(struct file *filp, char __user *buf, | |
306 | size_t count, loff_t *pos) | |
307 | { | |
308 | struct ib_uverbs_event_file *file = filp->private_data; | |
63aaf647 | 309 | struct ib_uverbs_event *event; |
bc38a6ab RD |
310 | int eventsz; |
311 | int ret = 0; | |
312 | ||
313 | spin_lock_irq(&file->lock); | |
314 | ||
6b73597e | 315 | while (list_empty(&file->event_list)) { |
bc38a6ab RD |
316 | spin_unlock_irq(&file->lock); |
317 | ||
318 | if (filp->f_flags & O_NONBLOCK) | |
319 | return -EAGAIN; | |
320 | ||
321 | if (wait_event_interruptible(file->poll_wait, | |
6b73597e | 322 | !list_empty(&file->event_list))) |
bc38a6ab RD |
323 | return -ERESTARTSYS; |
324 | ||
325 | spin_lock_irq(&file->lock); | |
326 | } | |
327 | ||
63aaf647 RD |
328 | event = list_entry(file->event_list.next, struct ib_uverbs_event, list); |
329 | ||
330 | if (file->is_async) | |
bc38a6ab | 331 | eventsz = sizeof (struct ib_uverbs_async_event_desc); |
63aaf647 | 332 | else |
bc38a6ab | 333 | eventsz = sizeof (struct ib_uverbs_comp_event_desc); |
bc38a6ab RD |
334 | |
335 | if (eventsz > count) { | |
336 | ret = -EINVAL; | |
337 | event = NULL; | |
63aaf647 | 338 | } else { |
bc38a6ab | 339 | list_del(file->event_list.next); |
63aaf647 RD |
340 | if (event->counter) { |
341 | ++(*event->counter); | |
342 | list_del(&event->obj_list); | |
343 | } | |
344 | } | |
bc38a6ab RD |
345 | |
346 | spin_unlock_irq(&file->lock); | |
347 | ||
348 | if (event) { | |
349 | if (copy_to_user(buf, event, eventsz)) | |
350 | ret = -EFAULT; | |
351 | else | |
352 | ret = eventsz; | |
353 | } | |
354 | ||
355 | kfree(event); | |
356 | ||
357 | return ret; | |
358 | } | |
359 | ||
360 | static unsigned int ib_uverbs_event_poll(struct file *filp, | |
361 | struct poll_table_struct *wait) | |
362 | { | |
363 | unsigned int pollflags = 0; | |
364 | struct ib_uverbs_event_file *file = filp->private_data; | |
365 | ||
366 | poll_wait(filp, &file->poll_wait, wait); | |
367 | ||
368 | spin_lock_irq(&file->lock); | |
6b73597e | 369 | if (!list_empty(&file->event_list)) |
bc38a6ab RD |
370 | pollflags = POLLIN | POLLRDNORM; |
371 | spin_unlock_irq(&file->lock); | |
372 | ||
373 | return pollflags; | |
374 | } | |
375 | ||
abdf119b GN |
376 | static int ib_uverbs_event_fasync(int fd, struct file *filp, int on) |
377 | { | |
378 | struct ib_uverbs_event_file *file = filp->private_data; | |
379 | ||
380 | return fasync_helper(fd, filp, on, &file->async_queue); | |
381 | } | |
382 | ||
bc38a6ab RD |
383 | static int ib_uverbs_event_close(struct inode *inode, struct file *filp) |
384 | { | |
385 | struct ib_uverbs_event_file *file = filp->private_data; | |
6b73597e RD |
386 | struct ib_uverbs_event *entry, *tmp; |
387 | ||
388 | spin_lock_irq(&file->lock); | |
1ae5c187 | 389 | file->is_closed = 1; |
6b73597e RD |
390 | list_for_each_entry_safe(entry, tmp, &file->event_list, list) { |
391 | if (entry->counter) | |
392 | list_del(&entry->obj_list); | |
393 | kfree(entry); | |
394 | } | |
395 | spin_unlock_irq(&file->lock); | |
bc38a6ab | 396 | |
6b73597e RD |
397 | if (file->is_async) { |
398 | ib_unregister_event_handler(&file->uverbs_file->event_handler); | |
399 | kref_put(&file->uverbs_file->ref, ib_uverbs_release_file); | |
400 | } | |
401 | kref_put(&file->ref, ib_uverbs_release_event_file); | |
bc38a6ab RD |
402 | |
403 | return 0; | |
404 | } | |
405 | ||
2b8693c0 | 406 | static const struct file_operations uverbs_event_fops = { |
6b73597e | 407 | .owner = THIS_MODULE, |
9afed76d | 408 | .read = ib_uverbs_event_read, |
bc38a6ab | 409 | .poll = ib_uverbs_event_poll, |
abdf119b | 410 | .release = ib_uverbs_event_close, |
bc1db9af RD |
411 | .fasync = ib_uverbs_event_fasync, |
412 | .llseek = no_llseek, | |
bc38a6ab RD |
413 | }; |
414 | ||
415 | void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context) | |
416 | { | |
6b73597e RD |
417 | struct ib_uverbs_event_file *file = cq_context; |
418 | struct ib_ucq_object *uobj; | |
419 | struct ib_uverbs_event *entry; | |
420 | unsigned long flags; | |
421 | ||
422 | if (!file) | |
423 | return; | |
424 | ||
425 | spin_lock_irqsave(&file->lock, flags); | |
1ae5c187 | 426 | if (file->is_closed) { |
6b73597e RD |
427 | spin_unlock_irqrestore(&file->lock, flags); |
428 | return; | |
429 | } | |
bc38a6ab RD |
430 | |
431 | entry = kmalloc(sizeof *entry, GFP_ATOMIC); | |
305a7e87 RD |
432 | if (!entry) { |
433 | spin_unlock_irqrestore(&file->lock, flags); | |
bc38a6ab | 434 | return; |
305a7e87 | 435 | } |
bc38a6ab | 436 | |
63aaf647 RD |
437 | uobj = container_of(cq->uobject, struct ib_ucq_object, uobject); |
438 | ||
439 | entry->desc.comp.cq_handle = cq->uobject->user_handle; | |
440 | entry->counter = &uobj->comp_events_reported; | |
bc38a6ab | 441 | |
6b73597e | 442 | list_add_tail(&entry->list, &file->event_list); |
63aaf647 | 443 | list_add_tail(&entry->obj_list, &uobj->comp_list); |
6b73597e | 444 | spin_unlock_irqrestore(&file->lock, flags); |
bc38a6ab | 445 | |
6b73597e RD |
446 | wake_up_interruptible(&file->poll_wait); |
447 | kill_fasync(&file->async_queue, SIGIO, POLL_IN); | |
bc38a6ab RD |
448 | } |
449 | ||
450 | static void ib_uverbs_async_handler(struct ib_uverbs_file *file, | |
63aaf647 RD |
451 | __u64 element, __u64 event, |
452 | struct list_head *obj_list, | |
453 | u32 *counter) | |
bc38a6ab | 454 | { |
63aaf647 | 455 | struct ib_uverbs_event *entry; |
bc38a6ab RD |
456 | unsigned long flags; |
457 | ||
6b73597e | 458 | spin_lock_irqsave(&file->async_file->lock, flags); |
fb77bcef | 459 | if (file->async_file->is_closed) { |
6b73597e RD |
460 | spin_unlock_irqrestore(&file->async_file->lock, flags); |
461 | return; | |
462 | } | |
463 | ||
bc38a6ab | 464 | entry = kmalloc(sizeof *entry, GFP_ATOMIC); |
305a7e87 RD |
465 | if (!entry) { |
466 | spin_unlock_irqrestore(&file->async_file->lock, flags); | |
bc38a6ab | 467 | return; |
305a7e87 | 468 | } |
bc38a6ab | 469 | |
63aaf647 RD |
470 | entry->desc.async.element = element; |
471 | entry->desc.async.event_type = event; | |
3af9e933 | 472 | entry->desc.async.reserved = 0; |
63aaf647 | 473 | entry->counter = counter; |
bc38a6ab | 474 | |
6b73597e | 475 | list_add_tail(&entry->list, &file->async_file->event_list); |
63aaf647 RD |
476 | if (obj_list) |
477 | list_add_tail(&entry->obj_list, obj_list); | |
6b73597e | 478 | spin_unlock_irqrestore(&file->async_file->lock, flags); |
bc38a6ab | 479 | |
6b73597e RD |
480 | wake_up_interruptible(&file->async_file->poll_wait); |
481 | kill_fasync(&file->async_file->async_queue, SIGIO, POLL_IN); | |
bc38a6ab RD |
482 | } |
483 | ||
484 | void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr) | |
485 | { | |
7162a3e0 RD |
486 | struct ib_ucq_object *uobj = container_of(event->element.cq->uobject, |
487 | struct ib_ucq_object, uobject); | |
63aaf647 | 488 | |
7162a3e0 | 489 | ib_uverbs_async_handler(uobj->uverbs_file, uobj->uobject.user_handle, |
63aaf647 RD |
490 | event->event, &uobj->async_list, |
491 | &uobj->async_events_reported); | |
bc38a6ab RD |
492 | } |
493 | ||
494 | void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr) | |
495 | { | |
63aaf647 RD |
496 | struct ib_uevent_object *uobj; |
497 | ||
498 | uobj = container_of(event->element.qp->uobject, | |
499 | struct ib_uevent_object, uobject); | |
500 | ||
501 | ib_uverbs_async_handler(context_ptr, uobj->uobject.user_handle, | |
502 | event->event, &uobj->event_list, | |
503 | &uobj->events_reported); | |
bc38a6ab RD |
504 | } |
505 | ||
f520ba5a RD |
506 | void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr) |
507 | { | |
63aaf647 RD |
508 | struct ib_uevent_object *uobj; |
509 | ||
510 | uobj = container_of(event->element.srq->uobject, | |
511 | struct ib_uevent_object, uobject); | |
512 | ||
513 | ib_uverbs_async_handler(context_ptr, uobj->uobject.user_handle, | |
514 | event->event, &uobj->event_list, | |
515 | &uobj->events_reported); | |
f520ba5a RD |
516 | } |
517 | ||
6b73597e RD |
518 | void ib_uverbs_event_handler(struct ib_event_handler *handler, |
519 | struct ib_event *event) | |
bc38a6ab RD |
520 | { |
521 | struct ib_uverbs_file *file = | |
522 | container_of(handler, struct ib_uverbs_file, event_handler); | |
523 | ||
63aaf647 RD |
524 | ib_uverbs_async_handler(file, event->element.port_num, event->event, |
525 | NULL, NULL); | |
bc38a6ab RD |
526 | } |
527 | ||
6b73597e | 528 | struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file, |
b1e4594b | 529 | int is_async) |
bc38a6ab | 530 | { |
6b73597e | 531 | struct ib_uverbs_event_file *ev_file; |
bc38a6ab RD |
532 | struct file *filp; |
533 | ||
6b73597e RD |
534 | ev_file = kmalloc(sizeof *ev_file, GFP_KERNEL); |
535 | if (!ev_file) | |
536 | return ERR_PTR(-ENOMEM); | |
537 | ||
538 | kref_init(&ev_file->ref); | |
539 | spin_lock_init(&ev_file->lock); | |
540 | INIT_LIST_HEAD(&ev_file->event_list); | |
541 | init_waitqueue_head(&ev_file->poll_wait); | |
542 | ev_file->uverbs_file = uverbs_file; | |
543 | ev_file->async_queue = NULL; | |
544 | ev_file->is_async = is_async; | |
1ae5c187 | 545 | ev_file->is_closed = 0; |
6b73597e | 546 | |
b1e4594b | 547 | filp = anon_inode_getfile("[infinibandevent]", &uverbs_event_fops, |
a265e558 | 548 | ev_file, O_RDONLY); |
b1e4594b AV |
549 | if (IS_ERR(filp)) |
550 | kfree(ev_file); | |
a7dab9e8 | 551 | |
6b73597e | 552 | return filp; |
6b73597e RD |
553 | } |
554 | ||
555 | /* | |
556 | * Look up a completion event file by FD. If lookup is successful, | |
557 | * takes a ref to the event file struct that it returns; if | |
558 | * unsuccessful, returns NULL. | |
559 | */ | |
560 | struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd) | |
561 | { | |
562 | struct ib_uverbs_event_file *ev_file = NULL; | |
2903ff01 | 563 | struct fd f = fdget(fd); |
6b73597e | 564 | |
2903ff01 | 565 | if (!f.file) |
6b73597e RD |
566 | return NULL; |
567 | ||
2903ff01 | 568 | if (f.file->f_op != &uverbs_event_fops) |
6b73597e RD |
569 | goto out; |
570 | ||
2903ff01 | 571 | ev_file = f.file->private_data; |
6b73597e RD |
572 | if (ev_file->is_async) { |
573 | ev_file = NULL; | |
574 | goto out; | |
575 | } | |
576 | ||
577 | kref_get(&ev_file->ref); | |
578 | ||
579 | out: | |
2903ff01 | 580 | fdput(f); |
6b73597e | 581 | return ev_file; |
bc38a6ab RD |
582 | } |
583 | ||
584 | static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf, | |
585 | size_t count, loff_t *pos) | |
586 | { | |
587 | struct ib_uverbs_file *file = filp->private_data; | |
588 | struct ib_uverbs_cmd_hdr hdr; | |
589 | ||
55ac348c JG |
590 | if (WARN_ON_ONCE(!ib_safe_file_access(filp))) |
591 | return -EACCES; | |
592 | ||
bc38a6ab RD |
593 | if (count < sizeof hdr) |
594 | return -EINVAL; | |
595 | ||
596 | if (copy_from_user(&hdr, buf, sizeof hdr)) | |
597 | return -EFAULT; | |
598 | ||
599 | if (hdr.in_words * 4 != count) | |
600 | return -EINVAL; | |
601 | ||
caf6e3f2 | 602 | if (hdr.command >= ARRAY_SIZE(uverbs_cmd_table) || |
b1b8afb8 | 603 | !uverbs_cmd_table[hdr.command]) |
bc38a6ab RD |
604 | return -EINVAL; |
605 | ||
6b73597e | 606 | if (!file->ucontext && |
bc38a6ab RD |
607 | hdr.command != IB_USER_VERBS_CMD_GET_CONTEXT) |
608 | return -EINVAL; | |
609 | ||
b1b8afb8 JM |
610 | if (!(file->device->ib_dev->uverbs_cmd_mask & (1ull << hdr.command))) |
611 | return -ENOSYS; | |
612 | ||
bc38a6ab RD |
613 | return uverbs_cmd_table[hdr.command](file, buf + sizeof hdr, |
614 | hdr.in_words * 4, hdr.out_words * 4); | |
615 | } | |
616 | ||
617 | static int ib_uverbs_mmap(struct file *filp, struct vm_area_struct *vma) | |
618 | { | |
619 | struct ib_uverbs_file *file = filp->private_data; | |
620 | ||
621 | if (!file->ucontext) | |
622 | return -ENODEV; | |
623 | else | |
624 | return file->device->ib_dev->mmap(file->ucontext, vma); | |
625 | } | |
626 | ||
5b2d281a RD |
627 | /* |
628 | * ib_uverbs_open() does not need the BKL: | |
629 | * | |
2a72f212 | 630 | * - the ib_uverbs_device structures are properly reference counted and |
5b2d281a RD |
631 | * everything else is purely local to the file being created, so |
632 | * races against other open calls are not a problem; | |
633 | * - there is no ioctl method to race against; | |
2a72f212 AC |
634 | * - the open method will either immediately run -ENXIO, or all |
635 | * required initialization will be done. | |
5b2d281a | 636 | */ |
bc38a6ab RD |
637 | static int ib_uverbs_open(struct inode *inode, struct file *filp) |
638 | { | |
70a30e16 | 639 | struct ib_uverbs_device *dev; |
bc38a6ab | 640 | struct ib_uverbs_file *file; |
70a30e16 | 641 | int ret; |
bc38a6ab | 642 | |
2a72f212 | 643 | dev = container_of(inode->i_cdev, struct ib_uverbs_device, cdev); |
caf23350 | 644 | if (!atomic_inc_not_zero(&dev->refcount)) |
70a30e16 RD |
645 | return -ENXIO; |
646 | ||
647 | if (!try_module_get(dev->ib_dev->owner)) { | |
648 | ret = -ENODEV; | |
649 | goto err; | |
650 | } | |
bc38a6ab | 651 | |
6b73597e | 652 | file = kmalloc(sizeof *file, GFP_KERNEL); |
63c47c28 | 653 | if (!file) { |
70a30e16 RD |
654 | ret = -ENOMEM; |
655 | goto err_module; | |
63c47c28 | 656 | } |
bc38a6ab | 657 | |
70a30e16 RD |
658 | file->device = dev; |
659 | file->ucontext = NULL; | |
660 | file->async_file = NULL; | |
bc38a6ab | 661 | kref_init(&file->ref); |
95ed644f | 662 | mutex_init(&file->mutex); |
bc38a6ab | 663 | |
bc38a6ab | 664 | filp->private_data = file; |
caf23350 | 665 | kobject_get(&dev->kobj); |
bc38a6ab | 666 | |
bc1db9af | 667 | return nonseekable_open(inode, filp); |
70a30e16 RD |
668 | |
669 | err_module: | |
670 | module_put(dev->ib_dev->owner); | |
671 | ||
672 | err: | |
caf23350 YH |
673 | if (atomic_dec_and_test(&dev->refcount)) |
674 | ib_uverbs_comp_dev(dev); | |
675 | ||
70a30e16 | 676 | return ret; |
bc38a6ab RD |
677 | } |
678 | ||
679 | static int ib_uverbs_close(struct inode *inode, struct file *filp) | |
680 | { | |
681 | struct ib_uverbs_file *file = filp->private_data; | |
caf23350 | 682 | struct ib_uverbs_device *dev = file->device; |
bc38a6ab | 683 | |
70a30e16 RD |
684 | ib_uverbs_cleanup_ucontext(file, file->ucontext); |
685 | ||
686 | if (file->async_file) | |
687 | kref_put(&file->async_file->ref, ib_uverbs_release_event_file); | |
bc38a6ab | 688 | |
bc38a6ab | 689 | kref_put(&file->ref, ib_uverbs_release_file); |
caf23350 | 690 | kobject_put(&dev->kobj); |
bc38a6ab RD |
691 | |
692 | return 0; | |
693 | } | |
694 | ||
2b8693c0 | 695 | static const struct file_operations uverbs_fops = { |
9afed76d AC |
696 | .owner = THIS_MODULE, |
697 | .write = ib_uverbs_write, | |
698 | .open = ib_uverbs_open, | |
bc1db9af RD |
699 | .release = ib_uverbs_close, |
700 | .llseek = no_llseek, | |
bc38a6ab RD |
701 | }; |
702 | ||
2b8693c0 | 703 | static const struct file_operations uverbs_mmap_fops = { |
9afed76d AC |
704 | .owner = THIS_MODULE, |
705 | .write = ib_uverbs_write, | |
bc38a6ab | 706 | .mmap = ib_uverbs_mmap, |
9afed76d | 707 | .open = ib_uverbs_open, |
bc1db9af RD |
708 | .release = ib_uverbs_close, |
709 | .llseek = no_llseek, | |
bc38a6ab RD |
710 | }; |
711 | ||
712 | static struct ib_client uverbs_client = { | |
713 | .name = "uverbs", | |
714 | .add = ib_uverbs_add_one, | |
715 | .remove = ib_uverbs_remove_one | |
716 | }; | |
717 | ||
f4e91eb4 TJ |
718 | static ssize_t show_ibdev(struct device *device, struct device_attribute *attr, |
719 | char *buf) | |
bc38a6ab | 720 | { |
f4e91eb4 | 721 | struct ib_uverbs_device *dev = dev_get_drvdata(device); |
70a30e16 RD |
722 | |
723 | if (!dev) | |
724 | return -ENODEV; | |
bc38a6ab RD |
725 | |
726 | return sprintf(buf, "%s\n", dev->ib_dev->name); | |
727 | } | |
f4e91eb4 | 728 | static DEVICE_ATTR(ibdev, S_IRUGO, show_ibdev, NULL); |
bc38a6ab | 729 | |
f4e91eb4 TJ |
730 | static ssize_t show_dev_abi_version(struct device *device, |
731 | struct device_attribute *attr, char *buf) | |
274c0891 | 732 | { |
f4e91eb4 | 733 | struct ib_uverbs_device *dev = dev_get_drvdata(device); |
70a30e16 RD |
734 | |
735 | if (!dev) | |
736 | return -ENODEV; | |
274c0891 RD |
737 | |
738 | return sprintf(buf, "%d\n", dev->ib_dev->uverbs_abi_ver); | |
739 | } | |
f4e91eb4 | 740 | static DEVICE_ATTR(abi_version, S_IRUGO, show_dev_abi_version, NULL); |
274c0891 | 741 | |
0933e2d9 AK |
742 | static CLASS_ATTR_STRING(abi_version, S_IRUGO, |
743 | __stringify(IB_USER_VERBS_ABI_VERSION)); | |
bc38a6ab | 744 | |
6d6a0e71 AC |
745 | static dev_t overflow_maj; |
746 | static DECLARE_BITMAP(overflow_map, IB_UVERBS_MAX_DEVICES); | |
747 | ||
748 | /* | |
749 | * If we have more than IB_UVERBS_MAX_DEVICES, dynamically overflow by | |
750 | * requesting a new major number and doubling the number of max devices we | |
751 | * support. It's stupid, but simple. | |
752 | */ | |
753 | static int find_overflow_devnum(void) | |
754 | { | |
755 | int ret; | |
756 | ||
757 | if (!overflow_maj) { | |
758 | ret = alloc_chrdev_region(&overflow_maj, 0, IB_UVERBS_MAX_DEVICES, | |
759 | "infiniband_verbs"); | |
760 | if (ret) { | |
761 | printk(KERN_ERR "user_verbs: couldn't register dynamic device number\n"); | |
762 | return ret; | |
763 | } | |
764 | } | |
765 | ||
766 | ret = find_first_zero_bit(overflow_map, IB_UVERBS_MAX_DEVICES); | |
767 | if (ret >= IB_UVERBS_MAX_DEVICES) | |
768 | return -1; | |
769 | ||
770 | return ret; | |
771 | } | |
772 | ||
bc38a6ab RD |
773 | static void ib_uverbs_add_one(struct ib_device *device) |
774 | { | |
38707980 | 775 | int devnum; |
ddbd6883 | 776 | dev_t base; |
bc38a6ab RD |
777 | struct ib_uverbs_device *uverbs_dev; |
778 | ||
779 | if (!device->alloc_ucontext) | |
780 | return; | |
781 | ||
de6eb66b | 782 | uverbs_dev = kzalloc(sizeof *uverbs_dev, GFP_KERNEL); |
bc38a6ab RD |
783 | if (!uverbs_dev) |
784 | return; | |
785 | ||
caf23350 | 786 | atomic_set(&uverbs_dev->refcount, 1); |
fd60ae40 | 787 | init_completion(&uverbs_dev->comp); |
53d0bd1e SH |
788 | uverbs_dev->xrcd_tree = RB_ROOT; |
789 | mutex_init(&uverbs_dev->xrcd_tree_mutex); | |
caf23350 | 790 | kobject_init(&uverbs_dev->kobj, &ib_uverbs_dev_ktype); |
70a30e16 | 791 | |
bc38a6ab | 792 | spin_lock(&map_lock); |
38707980 AC |
793 | devnum = find_first_zero_bit(dev_map, IB_UVERBS_MAX_DEVICES); |
794 | if (devnum >= IB_UVERBS_MAX_DEVICES) { | |
bc38a6ab | 795 | spin_unlock(&map_lock); |
6d6a0e71 AC |
796 | devnum = find_overflow_devnum(); |
797 | if (devnum < 0) | |
798 | goto err; | |
799 | ||
800 | spin_lock(&map_lock); | |
801 | uverbs_dev->devnum = devnum + IB_UVERBS_MAX_DEVICES; | |
802 | base = devnum + overflow_maj; | |
803 | set_bit(devnum, overflow_map); | |
804 | } else { | |
805 | uverbs_dev->devnum = devnum; | |
806 | base = devnum + IB_UVERBS_BASE_DEV; | |
807 | set_bit(devnum, dev_map); | |
bc38a6ab | 808 | } |
bc38a6ab RD |
809 | spin_unlock(&map_lock); |
810 | ||
6b73597e | 811 | uverbs_dev->ib_dev = device; |
f4fd0b22 | 812 | uverbs_dev->num_comp_vectors = device->num_comp_vectors; |
bc38a6ab | 813 | |
055422dd AC |
814 | cdev_init(&uverbs_dev->cdev, NULL); |
815 | uverbs_dev->cdev.owner = THIS_MODULE; | |
816 | uverbs_dev->cdev.ops = device->mmap ? &uverbs_mmap_fops : &uverbs_fops; | |
caf23350 | 817 | uverbs_dev->cdev.kobj.parent = &uverbs_dev->kobj; |
055422dd | 818 | kobject_set_name(&uverbs_dev->cdev.kobj, "uverbs%d", uverbs_dev->devnum); |
ddbd6883 | 819 | if (cdev_add(&uverbs_dev->cdev, base, 1)) |
70a30e16 | 820 | goto err_cdev; |
bc38a6ab | 821 | |
91bd418f | 822 | uverbs_dev->dev = device_create(uverbs_class, device->dma_device, |
055422dd | 823 | uverbs_dev->cdev.dev, uverbs_dev, |
91bd418f | 824 | "uverbs%d", uverbs_dev->devnum); |
f4e91eb4 | 825 | if (IS_ERR(uverbs_dev->dev)) |
bc38a6ab RD |
826 | goto err_cdev; |
827 | ||
f4e91eb4 | 828 | if (device_create_file(uverbs_dev->dev, &dev_attr_ibdev)) |
bc38a6ab | 829 | goto err_class; |
f4e91eb4 | 830 | if (device_create_file(uverbs_dev->dev, &dev_attr_abi_version)) |
274c0891 | 831 | goto err_class; |
bc38a6ab RD |
832 | |
833 | ib_set_client_data(device, &uverbs_client, uverbs_dev); | |
834 | ||
835 | return; | |
836 | ||
837 | err_class: | |
055422dd | 838 | device_destroy(uverbs_class, uverbs_dev->cdev.dev); |
bc38a6ab RD |
839 | |
840 | err_cdev: | |
055422dd | 841 | cdev_del(&uverbs_dev->cdev); |
6d6a0e71 AC |
842 | if (uverbs_dev->devnum < IB_UVERBS_MAX_DEVICES) |
843 | clear_bit(devnum, dev_map); | |
844 | else | |
845 | clear_bit(devnum, overflow_map); | |
bc38a6ab RD |
846 | |
847 | err: | |
caf23350 YH |
848 | if (atomic_dec_and_test(&uverbs_dev->refcount)) |
849 | ib_uverbs_comp_dev(uverbs_dev); | |
fd60ae40 | 850 | wait_for_completion(&uverbs_dev->comp); |
caf23350 | 851 | kobject_put(&uverbs_dev->kobj); |
bc38a6ab RD |
852 | return; |
853 | } | |
854 | ||
855 | static void ib_uverbs_remove_one(struct ib_device *device) | |
856 | { | |
857 | struct ib_uverbs_device *uverbs_dev = ib_get_client_data(device, &uverbs_client); | |
858 | ||
859 | if (!uverbs_dev) | |
860 | return; | |
861 | ||
f4e91eb4 | 862 | dev_set_drvdata(uverbs_dev->dev, NULL); |
055422dd AC |
863 | device_destroy(uverbs_class, uverbs_dev->cdev.dev); |
864 | cdev_del(&uverbs_dev->cdev); | |
70a30e16 | 865 | |
6d6a0e71 AC |
866 | if (uverbs_dev->devnum < IB_UVERBS_MAX_DEVICES) |
867 | clear_bit(uverbs_dev->devnum, dev_map); | |
868 | else | |
869 | clear_bit(uverbs_dev->devnum - IB_UVERBS_MAX_DEVICES, overflow_map); | |
fd60ae40 | 870 | |
caf23350 YH |
871 | if (atomic_dec_and_test(&uverbs_dev->refcount)) |
872 | ib_uverbs_comp_dev(uverbs_dev); | |
fd60ae40 | 873 | wait_for_completion(&uverbs_dev->comp); |
caf23350 | 874 | kobject_put(&uverbs_dev->kobj); |
bc38a6ab RD |
875 | } |
876 | ||
2c9ede55 | 877 | static char *uverbs_devnode(struct device *dev, umode_t *mode) |
71c29bd5 | 878 | { |
b2bc4782 GR |
879 | if (mode) |
880 | *mode = 0666; | |
71c29bd5 RD |
881 | return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev)); |
882 | } | |
883 | ||
bc38a6ab RD |
884 | static int __init ib_uverbs_init(void) |
885 | { | |
886 | int ret; | |
887 | ||
bc38a6ab RD |
888 | ret = register_chrdev_region(IB_UVERBS_BASE_DEV, IB_UVERBS_MAX_DEVICES, |
889 | "infiniband_verbs"); | |
890 | if (ret) { | |
891 | printk(KERN_ERR "user_verbs: couldn't register device number\n"); | |
892 | goto out; | |
893 | } | |
894 | ||
70a30e16 RD |
895 | uverbs_class = class_create(THIS_MODULE, "infiniband_verbs"); |
896 | if (IS_ERR(uverbs_class)) { | |
897 | ret = PTR_ERR(uverbs_class); | |
bc38a6ab RD |
898 | printk(KERN_ERR "user_verbs: couldn't create class infiniband_verbs\n"); |
899 | goto out_chrdev; | |
900 | } | |
901 | ||
71c29bd5 RD |
902 | uverbs_class->devnode = uverbs_devnode; |
903 | ||
0933e2d9 | 904 | ret = class_create_file(uverbs_class, &class_attr_abi_version.attr); |
bc38a6ab RD |
905 | if (ret) { |
906 | printk(KERN_ERR "user_verbs: couldn't create abi_version attribute\n"); | |
907 | goto out_class; | |
908 | } | |
909 | ||
bc38a6ab RD |
910 | ret = ib_register_client(&uverbs_client); |
911 | if (ret) { | |
912 | printk(KERN_ERR "user_verbs: couldn't register client\n"); | |
a265e558 | 913 | goto out_class; |
bc38a6ab RD |
914 | } |
915 | ||
916 | return 0; | |
917 | ||
bc38a6ab | 918 | out_class: |
70a30e16 | 919 | class_destroy(uverbs_class); |
bc38a6ab RD |
920 | |
921 | out_chrdev: | |
922 | unregister_chrdev_region(IB_UVERBS_BASE_DEV, IB_UVERBS_MAX_DEVICES); | |
923 | ||
924 | out: | |
925 | return ret; | |
926 | } | |
927 | ||
928 | static void __exit ib_uverbs_cleanup(void) | |
929 | { | |
930 | ib_unregister_client(&uverbs_client); | |
70a30e16 | 931 | class_destroy(uverbs_class); |
bc38a6ab | 932 | unregister_chrdev_region(IB_UVERBS_BASE_DEV, IB_UVERBS_MAX_DEVICES); |
6d6a0e71 AC |
933 | if (overflow_maj) |
934 | unregister_chrdev_region(overflow_maj, IB_UVERBS_MAX_DEVICES); | |
5d7edb3c RD |
935 | idr_destroy(&ib_uverbs_pd_idr); |
936 | idr_destroy(&ib_uverbs_mr_idr); | |
937 | idr_destroy(&ib_uverbs_mw_idr); | |
938 | idr_destroy(&ib_uverbs_ah_idr); | |
939 | idr_destroy(&ib_uverbs_cq_idr); | |
940 | idr_destroy(&ib_uverbs_qp_idr); | |
941 | idr_destroy(&ib_uverbs_srq_idr); | |
bc38a6ab RD |
942 | } |
943 | ||
944 | module_init(ib_uverbs_init); | |
945 | module_exit(ib_uverbs_cleanup); |