Commit | Line | Data |
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bc38a6ab RD |
1 | /* |
2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. | |
33b9b3ee | 3 | * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. |
eb9d3cd5 | 4 | * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
8bdb0e86 | 5 | * Copyright (c) 2006 Mellanox Technologies. All rights reserved. |
bc38a6ab RD |
6 | * |
7 | * This software is available to you under a choice of one of two | |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or | |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
16 | * | |
17 | * - Redistributions of source code must retain the above | |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
20 | * | |
21 | * - Redistributions in binary form must reproduce the above | |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
25 | * | |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
34 | * | |
35 | * $Id: uverbs_cmd.c 2708 2005-06-24 17:27:21Z roland $ | |
36 | */ | |
37 | ||
6b73597e | 38 | #include <linux/file.h> |
70a30e16 | 39 | #include <linux/fs.h> |
6b73597e | 40 | |
bc38a6ab RD |
41 | #include <asm/uaccess.h> |
42 | ||
43 | #include "uverbs.h" | |
44 | ||
45 | #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ | |
46 | do { \ | |
47 | (udata)->inbuf = (void __user *) (ibuf); \ | |
48 | (udata)->outbuf = (void __user *) (obuf); \ | |
49 | (udata)->inlen = (ilen); \ | |
50 | (udata)->outlen = (olen); \ | |
51 | } while (0) | |
52 | ||
bc38a6ab RD |
53 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
54 | const char __user *buf, | |
55 | int in_len, int out_len) | |
56 | { | |
57 | struct ib_uverbs_get_context cmd; | |
58 | struct ib_uverbs_get_context_resp resp; | |
59 | struct ib_udata udata; | |
60 | struct ib_device *ibdev = file->device->ib_dev; | |
63c47c28 | 61 | struct ib_ucontext *ucontext; |
6b73597e | 62 | struct file *filp; |
63c47c28 | 63 | int ret; |
bc38a6ab RD |
64 | |
65 | if (out_len < sizeof resp) | |
66 | return -ENOSPC; | |
67 | ||
68 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
69 | return -EFAULT; | |
70 | ||
95ed644f | 71 | mutex_lock(&file->mutex); |
63c47c28 RD |
72 | |
73 | if (file->ucontext) { | |
74 | ret = -EINVAL; | |
75 | goto err; | |
76 | } | |
77 | ||
bc38a6ab RD |
78 | INIT_UDATA(&udata, buf + sizeof cmd, |
79 | (unsigned long) cmd.response + sizeof resp, | |
80 | in_len - sizeof cmd, out_len - sizeof resp); | |
81 | ||
63c47c28 RD |
82 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
83 | if (IS_ERR(ucontext)) | |
84 | return PTR_ERR(file->ucontext); | |
bc38a6ab | 85 | |
63c47c28 RD |
86 | ucontext->device = ibdev; |
87 | INIT_LIST_HEAD(&ucontext->pd_list); | |
88 | INIT_LIST_HEAD(&ucontext->mr_list); | |
89 | INIT_LIST_HEAD(&ucontext->mw_list); | |
90 | INIT_LIST_HEAD(&ucontext->cq_list); | |
91 | INIT_LIST_HEAD(&ucontext->qp_list); | |
92 | INIT_LIST_HEAD(&ucontext->srq_list); | |
93 | INIT_LIST_HEAD(&ucontext->ah_list); | |
bc38a6ab | 94 | |
6b73597e RD |
95 | resp.num_comp_vectors = file->device->num_comp_vectors; |
96 | ||
97 | filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd); | |
98 | if (IS_ERR(filp)) { | |
99 | ret = PTR_ERR(filp); | |
100 | goto err_free; | |
101 | } | |
bc38a6ab RD |
102 | |
103 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
104 | &resp, sizeof resp)) { |
105 | ret = -EFAULT; | |
6b73597e | 106 | goto err_file; |
63c47c28 RD |
107 | } |
108 | ||
6b73597e RD |
109 | file->async_file = filp->private_data; |
110 | ||
111 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
112 | ib_uverbs_event_handler); | |
113 | ret = ib_register_event_handler(&file->event_handler); | |
114 | if (ret) | |
115 | goto err_file; | |
116 | ||
117 | kref_get(&file->async_file->ref); | |
118 | kref_get(&file->ref); | |
70a30e16 | 119 | file->ucontext = ucontext; |
6b73597e RD |
120 | |
121 | fd_install(resp.async_fd, filp); | |
122 | ||
95ed644f | 123 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
124 | |
125 | return in_len; | |
126 | ||
6b73597e RD |
127 | err_file: |
128 | put_unused_fd(resp.async_fd); | |
129 | fput(filp); | |
130 | ||
63c47c28 RD |
131 | err_free: |
132 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 133 | |
63c47c28 | 134 | err: |
95ed644f | 135 | mutex_unlock(&file->mutex); |
63c47c28 | 136 | return ret; |
bc38a6ab RD |
137 | } |
138 | ||
139 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
140 | const char __user *buf, | |
141 | int in_len, int out_len) | |
142 | { | |
143 | struct ib_uverbs_query_device cmd; | |
144 | struct ib_uverbs_query_device_resp resp; | |
145 | struct ib_device_attr attr; | |
146 | int ret; | |
147 | ||
148 | if (out_len < sizeof resp) | |
149 | return -ENOSPC; | |
150 | ||
151 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
152 | return -EFAULT; | |
153 | ||
154 | ret = ib_query_device(file->device->ib_dev, &attr); | |
155 | if (ret) | |
156 | return ret; | |
157 | ||
158 | memset(&resp, 0, sizeof resp); | |
159 | ||
160 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 161 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
162 | resp.sys_image_guid = attr.sys_image_guid; |
163 | resp.max_mr_size = attr.max_mr_size; | |
164 | resp.page_size_cap = attr.page_size_cap; | |
165 | resp.vendor_id = attr.vendor_id; | |
166 | resp.vendor_part_id = attr.vendor_part_id; | |
167 | resp.hw_ver = attr.hw_ver; | |
168 | resp.max_qp = attr.max_qp; | |
169 | resp.max_qp_wr = attr.max_qp_wr; | |
170 | resp.device_cap_flags = attr.device_cap_flags; | |
171 | resp.max_sge = attr.max_sge; | |
172 | resp.max_sge_rd = attr.max_sge_rd; | |
173 | resp.max_cq = attr.max_cq; | |
174 | resp.max_cqe = attr.max_cqe; | |
175 | resp.max_mr = attr.max_mr; | |
176 | resp.max_pd = attr.max_pd; | |
177 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
178 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
179 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
180 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
181 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
182 | resp.atomic_cap = attr.atomic_cap; | |
183 | resp.max_ee = attr.max_ee; | |
184 | resp.max_rdd = attr.max_rdd; | |
185 | resp.max_mw = attr.max_mw; | |
186 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
187 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
188 | resp.max_mcast_grp = attr.max_mcast_grp; | |
189 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
190 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
191 | resp.max_ah = attr.max_ah; | |
192 | resp.max_fmr = attr.max_fmr; | |
193 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
194 | resp.max_srq = attr.max_srq; | |
195 | resp.max_srq_wr = attr.max_srq_wr; | |
196 | resp.max_srq_sge = attr.max_srq_sge; | |
197 | resp.max_pkeys = attr.max_pkeys; | |
198 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
199 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
200 | ||
201 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
202 | &resp, sizeof resp)) | |
203 | return -EFAULT; | |
204 | ||
205 | return in_len; | |
206 | } | |
207 | ||
208 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
209 | const char __user *buf, | |
210 | int in_len, int out_len) | |
211 | { | |
212 | struct ib_uverbs_query_port cmd; | |
213 | struct ib_uverbs_query_port_resp resp; | |
214 | struct ib_port_attr attr; | |
215 | int ret; | |
216 | ||
217 | if (out_len < sizeof resp) | |
218 | return -ENOSPC; | |
219 | ||
220 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
221 | return -EFAULT; | |
222 | ||
223 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
224 | if (ret) | |
225 | return ret; | |
226 | ||
227 | memset(&resp, 0, sizeof resp); | |
228 | ||
229 | resp.state = attr.state; | |
230 | resp.max_mtu = attr.max_mtu; | |
231 | resp.active_mtu = attr.active_mtu; | |
232 | resp.gid_tbl_len = attr.gid_tbl_len; | |
233 | resp.port_cap_flags = attr.port_cap_flags; | |
234 | resp.max_msg_sz = attr.max_msg_sz; | |
235 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
236 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
237 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
238 | resp.lid = attr.lid; | |
239 | resp.sm_lid = attr.sm_lid; | |
240 | resp.lmc = attr.lmc; | |
241 | resp.max_vl_num = attr.max_vl_num; | |
242 | resp.sm_sl = attr.sm_sl; | |
243 | resp.subnet_timeout = attr.subnet_timeout; | |
244 | resp.init_type_reply = attr.init_type_reply; | |
245 | resp.active_width = attr.active_width; | |
246 | resp.active_speed = attr.active_speed; | |
247 | resp.phys_state = attr.phys_state; | |
248 | ||
249 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
250 | &resp, sizeof resp)) | |
251 | return -EFAULT; | |
252 | ||
253 | return in_len; | |
254 | } | |
255 | ||
bc38a6ab RD |
256 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
257 | const char __user *buf, | |
258 | int in_len, int out_len) | |
259 | { | |
260 | struct ib_uverbs_alloc_pd cmd; | |
261 | struct ib_uverbs_alloc_pd_resp resp; | |
262 | struct ib_udata udata; | |
263 | struct ib_uobject *uobj; | |
264 | struct ib_pd *pd; | |
265 | int ret; | |
266 | ||
267 | if (out_len < sizeof resp) | |
268 | return -ENOSPC; | |
269 | ||
270 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
271 | return -EFAULT; | |
272 | ||
273 | INIT_UDATA(&udata, buf + sizeof cmd, | |
274 | (unsigned long) cmd.response + sizeof resp, | |
275 | in_len - sizeof cmd, out_len - sizeof resp); | |
276 | ||
277 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
278 | if (!uobj) | |
279 | return -ENOMEM; | |
280 | ||
281 | uobj->context = file->ucontext; | |
282 | ||
283 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
284 | file->ucontext, &udata); | |
285 | if (IS_ERR(pd)) { | |
286 | ret = PTR_ERR(pd); | |
287 | goto err; | |
288 | } | |
289 | ||
290 | pd->device = file->device->ib_dev; | |
291 | pd->uobject = uobj; | |
292 | atomic_set(&pd->usecnt, 0); | |
293 | ||
95ed644f | 294 | mutex_lock(&ib_uverbs_idr_mutex); |
eb9d3cd5 | 295 | |
bc38a6ab RD |
296 | retry: |
297 | if (!idr_pre_get(&ib_uverbs_pd_idr, GFP_KERNEL)) { | |
298 | ret = -ENOMEM; | |
eb9d3cd5 | 299 | goto err_up; |
bc38a6ab RD |
300 | } |
301 | ||
bc38a6ab | 302 | ret = idr_get_new(&ib_uverbs_pd_idr, pd, &uobj->id); |
bc38a6ab RD |
303 | |
304 | if (ret == -EAGAIN) | |
305 | goto retry; | |
306 | if (ret) | |
eb9d3cd5 | 307 | goto err_up; |
bc38a6ab RD |
308 | |
309 | memset(&resp, 0, sizeof resp); | |
310 | resp.pd_handle = uobj->id; | |
311 | ||
312 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
313 | &resp, sizeof resp)) { | |
314 | ret = -EFAULT; | |
eb9d3cd5 | 315 | goto err_idr; |
bc38a6ab RD |
316 | } |
317 | ||
95ed644f | 318 | mutex_lock(&file->mutex); |
eb9d3cd5 | 319 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 320 | mutex_unlock(&file->mutex); |
bc38a6ab | 321 | |
95ed644f | 322 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab | 323 | |
eb9d3cd5 RD |
324 | return in_len; |
325 | ||
326 | err_idr: | |
327 | idr_remove(&ib_uverbs_pd_idr, uobj->id); | |
328 | ||
329 | err_up: | |
95ed644f | 330 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
331 | ib_dealloc_pd(pd); |
332 | ||
333 | err: | |
334 | kfree(uobj); | |
335 | return ret; | |
336 | } | |
337 | ||
338 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
339 | const char __user *buf, | |
340 | int in_len, int out_len) | |
341 | { | |
342 | struct ib_uverbs_dealloc_pd cmd; | |
343 | struct ib_pd *pd; | |
344 | struct ib_uobject *uobj; | |
345 | int ret = -EINVAL; | |
346 | ||
347 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
348 | return -EFAULT; | |
349 | ||
95ed644f | 350 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
351 | |
352 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
353 | if (!pd || pd->uobject->context != file->ucontext) | |
354 | goto out; | |
355 | ||
356 | uobj = pd->uobject; | |
357 | ||
358 | ret = ib_dealloc_pd(pd); | |
359 | if (ret) | |
360 | goto out; | |
361 | ||
362 | idr_remove(&ib_uverbs_pd_idr, cmd.pd_handle); | |
363 | ||
95ed644f | 364 | mutex_lock(&file->mutex); |
bc38a6ab | 365 | list_del(&uobj->list); |
95ed644f | 366 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
367 | |
368 | kfree(uobj); | |
369 | ||
370 | out: | |
95ed644f | 371 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
372 | |
373 | return ret ? ret : in_len; | |
374 | } | |
375 | ||
376 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, | |
377 | const char __user *buf, int in_len, | |
378 | int out_len) | |
379 | { | |
380 | struct ib_uverbs_reg_mr cmd; | |
381 | struct ib_uverbs_reg_mr_resp resp; | |
382 | struct ib_udata udata; | |
383 | struct ib_umem_object *obj; | |
384 | struct ib_pd *pd; | |
385 | struct ib_mr *mr; | |
386 | int ret; | |
387 | ||
388 | if (out_len < sizeof resp) | |
389 | return -ENOSPC; | |
390 | ||
391 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
392 | return -EFAULT; | |
393 | ||
394 | INIT_UDATA(&udata, buf + sizeof cmd, | |
395 | (unsigned long) cmd.response + sizeof resp, | |
396 | in_len - sizeof cmd, out_len - sizeof resp); | |
397 | ||
398 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
399 | return -EINVAL; | |
400 | ||
f575394f RD |
401 | /* |
402 | * Local write permission is required if remote write or | |
403 | * remote atomic permission is also requested. | |
404 | */ | |
405 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
406 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) | |
407 | return -EINVAL; | |
408 | ||
bc38a6ab RD |
409 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
410 | if (!obj) | |
411 | return -ENOMEM; | |
412 | ||
413 | obj->uobject.context = file->ucontext; | |
414 | ||
415 | /* | |
416 | * We ask for writable memory if any access flags other than | |
417 | * "remote read" are set. "Local write" and "remote write" | |
418 | * obviously require write access. "Remote atomic" can do | |
419 | * things like fetch and add, which will modify memory, and | |
420 | * "MW bind" can change permissions by binding a window. | |
421 | */ | |
422 | ret = ib_umem_get(file->device->ib_dev, &obj->umem, | |
423 | (void *) (unsigned long) cmd.start, cmd.length, | |
424 | !!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ)); | |
425 | if (ret) | |
426 | goto err_free; | |
427 | ||
428 | obj->umem.virt_base = cmd.hca_va; | |
429 | ||
95ed644f | 430 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
431 | |
432 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
433 | if (!pd || pd->uobject->context != file->ucontext) { | |
434 | ret = -EINVAL; | |
435 | goto err_up; | |
436 | } | |
437 | ||
438 | if (!pd->device->reg_user_mr) { | |
439 | ret = -ENOSYS; | |
440 | goto err_up; | |
441 | } | |
442 | ||
443 | mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata); | |
444 | if (IS_ERR(mr)) { | |
445 | ret = PTR_ERR(mr); | |
446 | goto err_up; | |
447 | } | |
448 | ||
449 | mr->device = pd->device; | |
450 | mr->pd = pd; | |
451 | mr->uobject = &obj->uobject; | |
452 | atomic_inc(&pd->usecnt); | |
453 | atomic_set(&mr->usecnt, 0); | |
454 | ||
455 | memset(&resp, 0, sizeof resp); | |
456 | resp.lkey = mr->lkey; | |
457 | resp.rkey = mr->rkey; | |
458 | ||
459 | retry: | |
460 | if (!idr_pre_get(&ib_uverbs_mr_idr, GFP_KERNEL)) { | |
461 | ret = -ENOMEM; | |
462 | goto err_unreg; | |
463 | } | |
464 | ||
465 | ret = idr_get_new(&ib_uverbs_mr_idr, mr, &obj->uobject.id); | |
466 | ||
467 | if (ret == -EAGAIN) | |
468 | goto retry; | |
469 | if (ret) | |
470 | goto err_unreg; | |
471 | ||
472 | resp.mr_handle = obj->uobject.id; | |
473 | ||
bc38a6ab RD |
474 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
475 | &resp, sizeof resp)) { | |
476 | ret = -EFAULT; | |
eb9d3cd5 | 477 | goto err_idr; |
bc38a6ab RD |
478 | } |
479 | ||
95ed644f | 480 | mutex_lock(&file->mutex); |
eb9d3cd5 | 481 | list_add_tail(&obj->uobject.list, &file->ucontext->mr_list); |
95ed644f | 482 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 483 | |
95ed644f | 484 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
485 | |
486 | return in_len; | |
487 | ||
eb9d3cd5 RD |
488 | err_idr: |
489 | idr_remove(&ib_uverbs_mr_idr, obj->uobject.id); | |
bc38a6ab RD |
490 | |
491 | err_unreg: | |
492 | ib_dereg_mr(mr); | |
b4ca1a3f | 493 | atomic_dec(&pd->usecnt); |
bc38a6ab RD |
494 | |
495 | err_up: | |
95ed644f | 496 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
497 | |
498 | ib_umem_release(file->device->ib_dev, &obj->umem); | |
499 | ||
500 | err_free: | |
501 | kfree(obj); | |
502 | return ret; | |
503 | } | |
504 | ||
505 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
506 | const char __user *buf, int in_len, | |
507 | int out_len) | |
508 | { | |
509 | struct ib_uverbs_dereg_mr cmd; | |
510 | struct ib_mr *mr; | |
511 | struct ib_umem_object *memobj; | |
512 | int ret = -EINVAL; | |
513 | ||
514 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
515 | return -EFAULT; | |
516 | ||
95ed644f | 517 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
518 | |
519 | mr = idr_find(&ib_uverbs_mr_idr, cmd.mr_handle); | |
520 | if (!mr || mr->uobject->context != file->ucontext) | |
521 | goto out; | |
522 | ||
523 | memobj = container_of(mr->uobject, struct ib_umem_object, uobject); | |
524 | ||
525 | ret = ib_dereg_mr(mr); | |
526 | if (ret) | |
527 | goto out; | |
528 | ||
529 | idr_remove(&ib_uverbs_mr_idr, cmd.mr_handle); | |
530 | ||
95ed644f | 531 | mutex_lock(&file->mutex); |
bc38a6ab | 532 | list_del(&memobj->uobject.list); |
95ed644f | 533 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
534 | |
535 | ib_umem_release(file->device->ib_dev, &memobj->umem); | |
536 | kfree(memobj); | |
537 | ||
538 | out: | |
95ed644f | 539 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
540 | |
541 | return ret ? ret : in_len; | |
542 | } | |
543 | ||
6b73597e RD |
544 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
545 | const char __user *buf, int in_len, | |
546 | int out_len) | |
547 | { | |
548 | struct ib_uverbs_create_comp_channel cmd; | |
549 | struct ib_uverbs_create_comp_channel_resp resp; | |
550 | struct file *filp; | |
551 | ||
552 | if (out_len < sizeof resp) | |
553 | return -ENOSPC; | |
554 | ||
555 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
556 | return -EFAULT; | |
557 | ||
558 | filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd); | |
559 | if (IS_ERR(filp)) | |
560 | return PTR_ERR(filp); | |
561 | ||
562 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
563 | &resp, sizeof resp)) { | |
564 | put_unused_fd(resp.fd); | |
565 | fput(filp); | |
566 | return -EFAULT; | |
567 | } | |
568 | ||
569 | fd_install(resp.fd, filp); | |
570 | return in_len; | |
571 | } | |
572 | ||
bc38a6ab RD |
573 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
574 | const char __user *buf, int in_len, | |
575 | int out_len) | |
576 | { | |
577 | struct ib_uverbs_create_cq cmd; | |
578 | struct ib_uverbs_create_cq_resp resp; | |
579 | struct ib_udata udata; | |
63aaf647 | 580 | struct ib_ucq_object *uobj; |
6b73597e | 581 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
582 | struct ib_cq *cq; |
583 | int ret; | |
584 | ||
585 | if (out_len < sizeof resp) | |
586 | return -ENOSPC; | |
587 | ||
588 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
589 | return -EFAULT; | |
590 | ||
591 | INIT_UDATA(&udata, buf + sizeof cmd, | |
592 | (unsigned long) cmd.response + sizeof resp, | |
593 | in_len - sizeof cmd, out_len - sizeof resp); | |
594 | ||
6b73597e | 595 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
bc38a6ab RD |
596 | return -EINVAL; |
597 | ||
598 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
599 | if (!uobj) | |
600 | return -ENOMEM; | |
601 | ||
ac4e7b35 JM |
602 | if (cmd.comp_channel >= 0) { |
603 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); | |
604 | if (!ev_file) { | |
605 | ret = -EINVAL; | |
606 | goto err; | |
607 | } | |
608 | } | |
609 | ||
63aaf647 RD |
610 | uobj->uobject.user_handle = cmd.user_handle; |
611 | uobj->uobject.context = file->ucontext; | |
7162a3e0 | 612 | uobj->uverbs_file = file; |
63aaf647 RD |
613 | uobj->comp_events_reported = 0; |
614 | uobj->async_events_reported = 0; | |
615 | INIT_LIST_HEAD(&uobj->comp_list); | |
616 | INIT_LIST_HEAD(&uobj->async_list); | |
bc38a6ab RD |
617 | |
618 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, | |
619 | file->ucontext, &udata); | |
620 | if (IS_ERR(cq)) { | |
621 | ret = PTR_ERR(cq); | |
622 | goto err; | |
623 | } | |
624 | ||
625 | cq->device = file->device->ib_dev; | |
63aaf647 | 626 | cq->uobject = &uobj->uobject; |
bc38a6ab RD |
627 | cq->comp_handler = ib_uverbs_comp_handler; |
628 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 629 | cq->cq_context = ev_file; |
bc38a6ab RD |
630 | atomic_set(&cq->usecnt, 0); |
631 | ||
95ed644f | 632 | mutex_lock(&ib_uverbs_idr_mutex); |
eb9d3cd5 | 633 | |
bc38a6ab RD |
634 | retry: |
635 | if (!idr_pre_get(&ib_uverbs_cq_idr, GFP_KERNEL)) { | |
636 | ret = -ENOMEM; | |
eb9d3cd5 | 637 | goto err_up; |
bc38a6ab RD |
638 | } |
639 | ||
63aaf647 | 640 | ret = idr_get_new(&ib_uverbs_cq_idr, cq, &uobj->uobject.id); |
bc38a6ab RD |
641 | |
642 | if (ret == -EAGAIN) | |
643 | goto retry; | |
644 | if (ret) | |
eb9d3cd5 | 645 | goto err_up; |
bc38a6ab RD |
646 | |
647 | memset(&resp, 0, sizeof resp); | |
63aaf647 | 648 | resp.cq_handle = uobj->uobject.id; |
bc38a6ab RD |
649 | resp.cqe = cq->cqe; |
650 | ||
651 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
652 | &resp, sizeof resp)) { | |
653 | ret = -EFAULT; | |
eb9d3cd5 | 654 | goto err_idr; |
bc38a6ab RD |
655 | } |
656 | ||
95ed644f | 657 | mutex_lock(&file->mutex); |
eb9d3cd5 | 658 | list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 659 | mutex_unlock(&file->mutex); |
bc38a6ab | 660 | |
95ed644f | 661 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab | 662 | |
eb9d3cd5 RD |
663 | return in_len; |
664 | ||
665 | err_idr: | |
666 | idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id); | |
667 | ||
668 | err_up: | |
95ed644f | 669 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
670 | ib_destroy_cq(cq); |
671 | ||
672 | err: | |
ac4e7b35 JM |
673 | if (ev_file) |
674 | ib_uverbs_release_ucq(file, ev_file, uobj); | |
bc38a6ab RD |
675 | kfree(uobj); |
676 | return ret; | |
677 | } | |
678 | ||
33b9b3ee RD |
679 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
680 | const char __user *buf, int in_len, | |
681 | int out_len) | |
682 | { | |
683 | struct ib_uverbs_resize_cq cmd; | |
684 | struct ib_uverbs_resize_cq_resp resp; | |
685 | struct ib_udata udata; | |
686 | struct ib_cq *cq; | |
687 | int ret = -EINVAL; | |
688 | ||
689 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
690 | return -EFAULT; | |
691 | ||
692 | INIT_UDATA(&udata, buf + sizeof cmd, | |
693 | (unsigned long) cmd.response + sizeof resp, | |
694 | in_len - sizeof cmd, out_len - sizeof resp); | |
695 | ||
696 | mutex_lock(&ib_uverbs_idr_mutex); | |
697 | ||
698 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); | |
699 | if (!cq || cq->uobject->context != file->ucontext || !cq->device->resize_cq) | |
700 | goto out; | |
701 | ||
702 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
703 | if (ret) | |
704 | goto out; | |
705 | ||
706 | memset(&resp, 0, sizeof resp); | |
707 | resp.cqe = cq->cqe; | |
708 | ||
709 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
710 | &resp, sizeof resp)) | |
711 | ret = -EFAULT; | |
712 | ||
713 | out: | |
714 | mutex_unlock(&ib_uverbs_idr_mutex); | |
715 | ||
716 | return ret ? ret : in_len; | |
717 | } | |
718 | ||
67cdb40c RD |
719 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
720 | const char __user *buf, int in_len, | |
721 | int out_len) | |
722 | { | |
723 | struct ib_uverbs_poll_cq cmd; | |
724 | struct ib_uverbs_poll_cq_resp *resp; | |
725 | struct ib_cq *cq; | |
726 | struct ib_wc *wc; | |
727 | int ret = 0; | |
728 | int i; | |
729 | int rsize; | |
730 | ||
731 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
732 | return -EFAULT; | |
733 | ||
734 | wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL); | |
735 | if (!wc) | |
736 | return -ENOMEM; | |
737 | ||
738 | rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc); | |
739 | resp = kmalloc(rsize, GFP_KERNEL); | |
740 | if (!resp) { | |
741 | ret = -ENOMEM; | |
742 | goto out_wc; | |
743 | } | |
744 | ||
95ed644f | 745 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
746 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
747 | if (!cq || cq->uobject->context != file->ucontext) { | |
748 | ret = -EINVAL; | |
749 | goto out; | |
750 | } | |
751 | ||
752 | resp->count = ib_poll_cq(cq, cmd.ne, wc); | |
753 | ||
754 | for (i = 0; i < resp->count; i++) { | |
755 | resp->wc[i].wr_id = wc[i].wr_id; | |
756 | resp->wc[i].status = wc[i].status; | |
757 | resp->wc[i].opcode = wc[i].opcode; | |
758 | resp->wc[i].vendor_err = wc[i].vendor_err; | |
759 | resp->wc[i].byte_len = wc[i].byte_len; | |
77369ed3 | 760 | resp->wc[i].imm_data = (__u32 __force) wc[i].imm_data; |
67cdb40c RD |
761 | resp->wc[i].qp_num = wc[i].qp_num; |
762 | resp->wc[i].src_qp = wc[i].src_qp; | |
763 | resp->wc[i].wc_flags = wc[i].wc_flags; | |
764 | resp->wc[i].pkey_index = wc[i].pkey_index; | |
765 | resp->wc[i].slid = wc[i].slid; | |
766 | resp->wc[i].sl = wc[i].sl; | |
767 | resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits; | |
768 | resp->wc[i].port_num = wc[i].port_num; | |
769 | } | |
770 | ||
771 | if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize)) | |
772 | ret = -EFAULT; | |
773 | ||
774 | out: | |
95ed644f | 775 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
776 | kfree(resp); |
777 | ||
778 | out_wc: | |
779 | kfree(wc); | |
780 | return ret ? ret : in_len; | |
781 | } | |
782 | ||
783 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
784 | const char __user *buf, int in_len, | |
785 | int out_len) | |
786 | { | |
787 | struct ib_uverbs_req_notify_cq cmd; | |
788 | struct ib_cq *cq; | |
789 | int ret = -EINVAL; | |
790 | ||
791 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
792 | return -EFAULT; | |
793 | ||
95ed644f | 794 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
795 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
796 | if (cq && cq->uobject->context == file->ucontext) { | |
797 | ib_req_notify_cq(cq, cmd.solicited_only ? | |
798 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
799 | ret = in_len; | |
800 | } | |
95ed644f | 801 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
802 | |
803 | return ret; | |
804 | } | |
805 | ||
bc38a6ab RD |
806 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
807 | const char __user *buf, int in_len, | |
808 | int out_len) | |
809 | { | |
63aaf647 RD |
810 | struct ib_uverbs_destroy_cq cmd; |
811 | struct ib_uverbs_destroy_cq_resp resp; | |
812 | struct ib_cq *cq; | |
813 | struct ib_ucq_object *uobj; | |
6b73597e | 814 | struct ib_uverbs_event_file *ev_file; |
63aaf647 RD |
815 | u64 user_handle; |
816 | int ret = -EINVAL; | |
bc38a6ab RD |
817 | |
818 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
819 | return -EFAULT; | |
820 | ||
63aaf647 RD |
821 | memset(&resp, 0, sizeof resp); |
822 | ||
95ed644f | 823 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
824 | |
825 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); | |
826 | if (!cq || cq->uobject->context != file->ucontext) | |
827 | goto out; | |
828 | ||
63aaf647 | 829 | user_handle = cq->uobject->user_handle; |
6b73597e RD |
830 | uobj = container_of(cq->uobject, struct ib_ucq_object, uobject); |
831 | ev_file = cq->cq_context; | |
bc38a6ab RD |
832 | |
833 | ret = ib_destroy_cq(cq); | |
834 | if (ret) | |
835 | goto out; | |
836 | ||
837 | idr_remove(&ib_uverbs_cq_idr, cmd.cq_handle); | |
838 | ||
95ed644f | 839 | mutex_lock(&file->mutex); |
63aaf647 | 840 | list_del(&uobj->uobject.list); |
95ed644f | 841 | mutex_unlock(&file->mutex); |
bc38a6ab | 842 | |
70a30e16 | 843 | ib_uverbs_release_ucq(file, ev_file, uobj); |
63aaf647 RD |
844 | |
845 | resp.comp_events_reported = uobj->comp_events_reported; | |
846 | resp.async_events_reported = uobj->async_events_reported; | |
847 | ||
bc38a6ab RD |
848 | kfree(uobj); |
849 | ||
63aaf647 RD |
850 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
851 | &resp, sizeof resp)) | |
852 | ret = -EFAULT; | |
853 | ||
bc38a6ab | 854 | out: |
95ed644f | 855 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
856 | |
857 | return ret ? ret : in_len; | |
858 | } | |
859 | ||
860 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
861 | const char __user *buf, int in_len, | |
862 | int out_len) | |
863 | { | |
864 | struct ib_uverbs_create_qp cmd; | |
865 | struct ib_uverbs_create_qp_resp resp; | |
866 | struct ib_udata udata; | |
f4e40156 | 867 | struct ib_uqp_object *uobj; |
bc38a6ab RD |
868 | struct ib_pd *pd; |
869 | struct ib_cq *scq, *rcq; | |
f520ba5a | 870 | struct ib_srq *srq; |
bc38a6ab RD |
871 | struct ib_qp *qp; |
872 | struct ib_qp_init_attr attr; | |
873 | int ret; | |
874 | ||
875 | if (out_len < sizeof resp) | |
876 | return -ENOSPC; | |
877 | ||
878 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
879 | return -EFAULT; | |
880 | ||
881 | INIT_UDATA(&udata, buf + sizeof cmd, | |
882 | (unsigned long) cmd.response + sizeof resp, | |
883 | in_len - sizeof cmd, out_len - sizeof resp); | |
884 | ||
885 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
886 | if (!uobj) | |
887 | return -ENOMEM; | |
888 | ||
95ed644f | 889 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
890 | |
891 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
892 | scq = idr_find(&ib_uverbs_cq_idr, cmd.send_cq_handle); | |
893 | rcq = idr_find(&ib_uverbs_cq_idr, cmd.recv_cq_handle); | |
f520ba5a | 894 | srq = cmd.is_srq ? idr_find(&ib_uverbs_srq_idr, cmd.srq_handle) : NULL; |
bc38a6ab RD |
895 | |
896 | if (!pd || pd->uobject->context != file->ucontext || | |
897 | !scq || scq->uobject->context != file->ucontext || | |
f520ba5a RD |
898 | !rcq || rcq->uobject->context != file->ucontext || |
899 | (cmd.is_srq && (!srq || srq->uobject->context != file->ucontext))) { | |
bc38a6ab RD |
900 | ret = -EINVAL; |
901 | goto err_up; | |
902 | } | |
903 | ||
904 | attr.event_handler = ib_uverbs_qp_event_handler; | |
905 | attr.qp_context = file; | |
906 | attr.send_cq = scq; | |
907 | attr.recv_cq = rcq; | |
f520ba5a | 908 | attr.srq = srq; |
bc38a6ab RD |
909 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
910 | attr.qp_type = cmd.qp_type; | |
911 | ||
912 | attr.cap.max_send_wr = cmd.max_send_wr; | |
913 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
914 | attr.cap.max_send_sge = cmd.max_send_sge; | |
915 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
916 | attr.cap.max_inline_data = cmd.max_inline_data; | |
917 | ||
f4e40156 JM |
918 | uobj->uevent.uobject.user_handle = cmd.user_handle; |
919 | uobj->uevent.uobject.context = file->ucontext; | |
920 | uobj->uevent.events_reported = 0; | |
921 | INIT_LIST_HEAD(&uobj->uevent.event_list); | |
922 | INIT_LIST_HEAD(&uobj->mcast_list); | |
bc38a6ab RD |
923 | |
924 | qp = pd->device->create_qp(pd, &attr, &udata); | |
925 | if (IS_ERR(qp)) { | |
926 | ret = PTR_ERR(qp); | |
927 | goto err_up; | |
928 | } | |
929 | ||
930 | qp->device = pd->device; | |
931 | qp->pd = pd; | |
932 | qp->send_cq = attr.send_cq; | |
933 | qp->recv_cq = attr.recv_cq; | |
934 | qp->srq = attr.srq; | |
f4e40156 | 935 | qp->uobject = &uobj->uevent.uobject; |
bc38a6ab RD |
936 | qp->event_handler = attr.event_handler; |
937 | qp->qp_context = attr.qp_context; | |
938 | qp->qp_type = attr.qp_type; | |
939 | atomic_inc(&pd->usecnt); | |
940 | atomic_inc(&attr.send_cq->usecnt); | |
941 | atomic_inc(&attr.recv_cq->usecnt); | |
942 | if (attr.srq) | |
943 | atomic_inc(&attr.srq->usecnt); | |
944 | ||
945 | memset(&resp, 0, sizeof resp); | |
946 | resp.qpn = qp->qp_num; | |
947 | ||
948 | retry: | |
949 | if (!idr_pre_get(&ib_uverbs_qp_idr, GFP_KERNEL)) { | |
950 | ret = -ENOMEM; | |
951 | goto err_destroy; | |
952 | } | |
953 | ||
f4e40156 | 954 | ret = idr_get_new(&ib_uverbs_qp_idr, qp, &uobj->uevent.uobject.id); |
bc38a6ab RD |
955 | |
956 | if (ret == -EAGAIN) | |
957 | goto retry; | |
958 | if (ret) | |
959 | goto err_destroy; | |
960 | ||
f4e40156 | 961 | resp.qp_handle = uobj->uevent.uobject.id; |
77369ed3 JM |
962 | resp.max_recv_sge = attr.cap.max_recv_sge; |
963 | resp.max_send_sge = attr.cap.max_send_sge; | |
964 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
965 | resp.max_send_wr = attr.cap.max_send_wr; | |
966 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 967 | |
bc38a6ab RD |
968 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
969 | &resp, sizeof resp)) { | |
970 | ret = -EFAULT; | |
eb9d3cd5 | 971 | goto err_idr; |
bc38a6ab RD |
972 | } |
973 | ||
95ed644f | 974 | mutex_lock(&file->mutex); |
f4e40156 | 975 | list_add_tail(&uobj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 976 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 977 | |
95ed644f | 978 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
979 | |
980 | return in_len; | |
981 | ||
eb9d3cd5 | 982 | err_idr: |
f4e40156 | 983 | idr_remove(&ib_uverbs_qp_idr, uobj->uevent.uobject.id); |
bc38a6ab RD |
984 | |
985 | err_destroy: | |
986 | ib_destroy_qp(qp); | |
b4ca1a3f JM |
987 | atomic_dec(&pd->usecnt); |
988 | atomic_dec(&attr.send_cq->usecnt); | |
989 | atomic_dec(&attr.recv_cq->usecnt); | |
990 | if (attr.srq) | |
991 | atomic_dec(&attr.srq->usecnt); | |
bc38a6ab RD |
992 | |
993 | err_up: | |
95ed644f | 994 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
995 | |
996 | kfree(uobj); | |
997 | return ret; | |
998 | } | |
999 | ||
7ccc9a24 DB |
1000 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
1001 | const char __user *buf, int in_len, | |
1002 | int out_len) | |
1003 | { | |
1004 | struct ib_uverbs_query_qp cmd; | |
1005 | struct ib_uverbs_query_qp_resp resp; | |
1006 | struct ib_qp *qp; | |
1007 | struct ib_qp_attr *attr; | |
1008 | struct ib_qp_init_attr *init_attr; | |
1009 | int ret; | |
1010 | ||
1011 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1012 | return -EFAULT; | |
1013 | ||
1014 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1015 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
1016 | if (!attr || !init_attr) { | |
1017 | ret = -ENOMEM; | |
1018 | goto out; | |
1019 | } | |
1020 | ||
1021 | mutex_lock(&ib_uverbs_idr_mutex); | |
1022 | ||
1023 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1024 | if (qp && qp->uobject->context == file->ucontext) | |
1025 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
1026 | else | |
1027 | ret = -EINVAL; | |
1028 | ||
1029 | mutex_unlock(&ib_uverbs_idr_mutex); | |
1030 | ||
1031 | if (ret) | |
1032 | goto out; | |
1033 | ||
1034 | memset(&resp, 0, sizeof resp); | |
1035 | ||
1036 | resp.qp_state = attr->qp_state; | |
1037 | resp.cur_qp_state = attr->cur_qp_state; | |
1038 | resp.path_mtu = attr->path_mtu; | |
1039 | resp.path_mig_state = attr->path_mig_state; | |
1040 | resp.qkey = attr->qkey; | |
1041 | resp.rq_psn = attr->rq_psn; | |
1042 | resp.sq_psn = attr->sq_psn; | |
1043 | resp.dest_qp_num = attr->dest_qp_num; | |
1044 | resp.qp_access_flags = attr->qp_access_flags; | |
1045 | resp.pkey_index = attr->pkey_index; | |
1046 | resp.alt_pkey_index = attr->alt_pkey_index; | |
1047 | resp.en_sqd_async_notify = attr->en_sqd_async_notify; | |
1048 | resp.max_rd_atomic = attr->max_rd_atomic; | |
1049 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1050 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1051 | resp.port_num = attr->port_num; | |
1052 | resp.timeout = attr->timeout; | |
1053 | resp.retry_cnt = attr->retry_cnt; | |
1054 | resp.rnr_retry = attr->rnr_retry; | |
1055 | resp.alt_port_num = attr->alt_port_num; | |
1056 | resp.alt_timeout = attr->alt_timeout; | |
1057 | ||
1058 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1059 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1060 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1061 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1062 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1063 | resp.dest.dlid = attr->ah_attr.dlid; | |
1064 | resp.dest.sl = attr->ah_attr.sl; | |
1065 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1066 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1067 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1068 | resp.dest.port_num = attr->ah_attr.port_num; | |
1069 | ||
1070 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1071 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1072 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1073 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1074 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1075 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1076 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1077 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1078 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1079 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1080 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1081 | ||
1082 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1083 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1084 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1085 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1086 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1087 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1088 | |
1089 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1090 | &resp, sizeof resp)) | |
1091 | ret = -EFAULT; | |
1092 | ||
1093 | out: | |
1094 | kfree(attr); | |
1095 | kfree(init_attr); | |
1096 | ||
1097 | return ret ? ret : in_len; | |
1098 | } | |
1099 | ||
bc38a6ab RD |
1100 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1101 | const char __user *buf, int in_len, | |
1102 | int out_len) | |
1103 | { | |
1104 | struct ib_uverbs_modify_qp cmd; | |
1105 | struct ib_qp *qp; | |
1106 | struct ib_qp_attr *attr; | |
1107 | int ret; | |
1108 | ||
1109 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1110 | return -EFAULT; | |
1111 | ||
1112 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1113 | if (!attr) | |
1114 | return -ENOMEM; | |
1115 | ||
95ed644f | 1116 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1117 | |
1118 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1119 | if (!qp || qp->uobject->context != file->ucontext) { | |
1120 | ret = -EINVAL; | |
1121 | goto out; | |
1122 | } | |
1123 | ||
1124 | attr->qp_state = cmd.qp_state; | |
1125 | attr->cur_qp_state = cmd.cur_qp_state; | |
1126 | attr->path_mtu = cmd.path_mtu; | |
1127 | attr->path_mig_state = cmd.path_mig_state; | |
1128 | attr->qkey = cmd.qkey; | |
1129 | attr->rq_psn = cmd.rq_psn; | |
1130 | attr->sq_psn = cmd.sq_psn; | |
1131 | attr->dest_qp_num = cmd.dest_qp_num; | |
1132 | attr->qp_access_flags = cmd.qp_access_flags; | |
1133 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1134 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1135 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1136 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1137 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1138 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1139 | attr->port_num = cmd.port_num; | |
1140 | attr->timeout = cmd.timeout; | |
1141 | attr->retry_cnt = cmd.retry_cnt; | |
1142 | attr->rnr_retry = cmd.rnr_retry; | |
1143 | attr->alt_port_num = cmd.alt_port_num; | |
1144 | attr->alt_timeout = cmd.alt_timeout; | |
1145 | ||
1146 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1147 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1148 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1149 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1150 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1151 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1152 | attr->ah_attr.sl = cmd.dest.sl; | |
1153 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1154 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1155 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1156 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1157 | ||
1158 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1159 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1160 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1161 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1162 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1163 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1164 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1165 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1166 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1167 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1168 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1169 | ||
1170 | ret = ib_modify_qp(qp, attr, cmd.attr_mask); | |
1171 | if (ret) | |
1172 | goto out; | |
1173 | ||
1174 | ret = in_len; | |
1175 | ||
1176 | out: | |
95ed644f | 1177 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1178 | kfree(attr); |
1179 | ||
1180 | return ret; | |
1181 | } | |
1182 | ||
1183 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1184 | const char __user *buf, int in_len, | |
1185 | int out_len) | |
1186 | { | |
63aaf647 RD |
1187 | struct ib_uverbs_destroy_qp cmd; |
1188 | struct ib_uverbs_destroy_qp_resp resp; | |
1189 | struct ib_qp *qp; | |
f4e40156 | 1190 | struct ib_uqp_object *uobj; |
63aaf647 | 1191 | int ret = -EINVAL; |
bc38a6ab RD |
1192 | |
1193 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1194 | return -EFAULT; | |
1195 | ||
63aaf647 RD |
1196 | memset(&resp, 0, sizeof resp); |
1197 | ||
95ed644f | 1198 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1199 | |
1200 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1201 | if (!qp || qp->uobject->context != file->ucontext) | |
1202 | goto out; | |
1203 | ||
f4e40156 JM |
1204 | uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
1205 | ||
1206 | if (!list_empty(&uobj->mcast_list)) { | |
1207 | ret = -EBUSY; | |
1208 | goto out; | |
1209 | } | |
bc38a6ab RD |
1210 | |
1211 | ret = ib_destroy_qp(qp); | |
1212 | if (ret) | |
1213 | goto out; | |
1214 | ||
1215 | idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1216 | ||
95ed644f | 1217 | mutex_lock(&file->mutex); |
f4e40156 | 1218 | list_del(&uobj->uevent.uobject.list); |
95ed644f | 1219 | mutex_unlock(&file->mutex); |
bc38a6ab | 1220 | |
f4e40156 | 1221 | ib_uverbs_release_uevent(file, &uobj->uevent); |
63aaf647 | 1222 | |
f4e40156 | 1223 | resp.events_reported = uobj->uevent.events_reported; |
63aaf647 | 1224 | |
bc38a6ab RD |
1225 | kfree(uobj); |
1226 | ||
63aaf647 RD |
1227 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1228 | &resp, sizeof resp)) | |
1229 | ret = -EFAULT; | |
1230 | ||
bc38a6ab | 1231 | out: |
95ed644f | 1232 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1233 | |
1234 | return ret ? ret : in_len; | |
1235 | } | |
1236 | ||
67cdb40c | 1237 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
1238 | const char __user *buf, int in_len, |
1239 | int out_len) | |
67cdb40c RD |
1240 | { |
1241 | struct ib_uverbs_post_send cmd; | |
1242 | struct ib_uverbs_post_send_resp resp; | |
1243 | struct ib_uverbs_send_wr *user_wr; | |
1244 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
1245 | struct ib_qp *qp; | |
1246 | int i, sg_ind; | |
1247 | ssize_t ret = -EINVAL; | |
1248 | ||
1249 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1250 | return -EFAULT; | |
1251 | ||
1252 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
1253 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
1254 | return -EINVAL; | |
1255 | ||
1256 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
1257 | return -EINVAL; | |
1258 | ||
1259 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
1260 | if (!user_wr) | |
1261 | return -ENOMEM; | |
1262 | ||
95ed644f | 1263 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1264 | |
1265 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1266 | if (!qp || qp->uobject->context != file->ucontext) | |
1267 | goto out; | |
1268 | ||
1269 | sg_ind = 0; | |
1270 | last = NULL; | |
1271 | for (i = 0; i < cmd.wr_count; ++i) { | |
1272 | if (copy_from_user(user_wr, | |
1273 | buf + sizeof cmd + i * cmd.wqe_size, | |
1274 | cmd.wqe_size)) { | |
1275 | ret = -EFAULT; | |
1276 | goto out; | |
1277 | } | |
1278 | ||
1279 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
1280 | ret = -EINVAL; | |
1281 | goto out; | |
1282 | } | |
1283 | ||
1284 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1285 | user_wr->num_sge * sizeof (struct ib_sge), | |
1286 | GFP_KERNEL); | |
1287 | if (!next) { | |
1288 | ret = -ENOMEM; | |
1289 | goto out; | |
1290 | } | |
1291 | ||
1292 | if (!last) | |
1293 | wr = next; | |
1294 | else | |
1295 | last->next = next; | |
1296 | last = next; | |
1297 | ||
1298 | next->next = NULL; | |
1299 | next->wr_id = user_wr->wr_id; | |
1300 | next->num_sge = user_wr->num_sge; | |
1301 | next->opcode = user_wr->opcode; | |
1302 | next->send_flags = user_wr->send_flags; | |
77369ed3 | 1303 | next->imm_data = (__be32 __force) user_wr->imm_data; |
67cdb40c RD |
1304 | |
1305 | if (qp->qp_type == IB_QPT_UD) { | |
1306 | next->wr.ud.ah = idr_find(&ib_uverbs_ah_idr, | |
1307 | user_wr->wr.ud.ah); | |
1308 | if (!next->wr.ud.ah) { | |
1309 | ret = -EINVAL; | |
1310 | goto out; | |
1311 | } | |
1312 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
1313 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
1314 | } else { | |
1315 | switch (next->opcode) { | |
1316 | case IB_WR_RDMA_WRITE: | |
1317 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
1318 | case IB_WR_RDMA_READ: | |
1319 | next->wr.rdma.remote_addr = | |
1320 | user_wr->wr.rdma.remote_addr; | |
1321 | next->wr.rdma.rkey = | |
1322 | user_wr->wr.rdma.rkey; | |
1323 | break; | |
1324 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
1325 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
1326 | next->wr.atomic.remote_addr = | |
1327 | user_wr->wr.atomic.remote_addr; | |
1328 | next->wr.atomic.compare_add = | |
1329 | user_wr->wr.atomic.compare_add; | |
1330 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
1331 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
1332 | break; | |
1333 | default: | |
1334 | break; | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | if (next->num_sge) { | |
1339 | next->sg_list = (void *) next + | |
1340 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1341 | if (copy_from_user(next->sg_list, | |
1342 | buf + sizeof cmd + | |
1343 | cmd.wr_count * cmd.wqe_size + | |
1344 | sg_ind * sizeof (struct ib_sge), | |
1345 | next->num_sge * sizeof (struct ib_sge))) { | |
1346 | ret = -EFAULT; | |
1347 | goto out; | |
1348 | } | |
1349 | sg_ind += next->num_sge; | |
1350 | } else | |
1351 | next->sg_list = NULL; | |
1352 | } | |
1353 | ||
1354 | resp.bad_wr = 0; | |
1355 | ret = qp->device->post_send(qp, wr, &bad_wr); | |
1356 | if (ret) | |
1357 | for (next = wr; next; next = next->next) { | |
1358 | ++resp.bad_wr; | |
1359 | if (next == bad_wr) | |
1360 | break; | |
1361 | } | |
1362 | ||
1363 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1364 | &resp, sizeof resp)) | |
1365 | ret = -EFAULT; | |
1366 | ||
1367 | out: | |
95ed644f | 1368 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1369 | |
1370 | while (wr) { | |
1371 | next = wr->next; | |
1372 | kfree(wr); | |
1373 | wr = next; | |
1374 | } | |
1375 | ||
1376 | kfree(user_wr); | |
1377 | ||
1378 | return ret ? ret : in_len; | |
1379 | } | |
1380 | ||
1381 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
1382 | int in_len, | |
1383 | u32 wr_count, | |
1384 | u32 sge_count, | |
1385 | u32 wqe_size) | |
1386 | { | |
1387 | struct ib_uverbs_recv_wr *user_wr; | |
1388 | struct ib_recv_wr *wr = NULL, *last, *next; | |
1389 | int sg_ind; | |
1390 | int i; | |
1391 | int ret; | |
1392 | ||
1393 | if (in_len < wqe_size * wr_count + | |
1394 | sge_count * sizeof (struct ib_uverbs_sge)) | |
1395 | return ERR_PTR(-EINVAL); | |
1396 | ||
1397 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
1398 | return ERR_PTR(-EINVAL); | |
1399 | ||
1400 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
1401 | if (!user_wr) | |
1402 | return ERR_PTR(-ENOMEM); | |
1403 | ||
1404 | sg_ind = 0; | |
1405 | last = NULL; | |
1406 | for (i = 0; i < wr_count; ++i) { | |
1407 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
1408 | wqe_size)) { | |
1409 | ret = -EFAULT; | |
1410 | goto err; | |
1411 | } | |
1412 | ||
1413 | if (user_wr->num_sge + sg_ind > sge_count) { | |
1414 | ret = -EINVAL; | |
1415 | goto err; | |
1416 | } | |
1417 | ||
1418 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1419 | user_wr->num_sge * sizeof (struct ib_sge), | |
1420 | GFP_KERNEL); | |
1421 | if (!next) { | |
1422 | ret = -ENOMEM; | |
1423 | goto err; | |
1424 | } | |
1425 | ||
1426 | if (!last) | |
1427 | wr = next; | |
1428 | else | |
1429 | last->next = next; | |
1430 | last = next; | |
1431 | ||
1432 | next->next = NULL; | |
1433 | next->wr_id = user_wr->wr_id; | |
1434 | next->num_sge = user_wr->num_sge; | |
1435 | ||
1436 | if (next->num_sge) { | |
1437 | next->sg_list = (void *) next + | |
1438 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1439 | if (copy_from_user(next->sg_list, | |
1440 | buf + wr_count * wqe_size + | |
1441 | sg_ind * sizeof (struct ib_sge), | |
1442 | next->num_sge * sizeof (struct ib_sge))) { | |
1443 | ret = -EFAULT; | |
1444 | goto err; | |
1445 | } | |
1446 | sg_ind += next->num_sge; | |
1447 | } else | |
1448 | next->sg_list = NULL; | |
1449 | } | |
1450 | ||
1451 | kfree(user_wr); | |
1452 | return wr; | |
1453 | ||
1454 | err: | |
1455 | kfree(user_wr); | |
1456 | ||
1457 | while (wr) { | |
1458 | next = wr->next; | |
1459 | kfree(wr); | |
1460 | wr = next; | |
1461 | } | |
1462 | ||
1463 | return ERR_PTR(ret); | |
1464 | } | |
1465 | ||
1466 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1467 | const char __user *buf, int in_len, |
1468 | int out_len) | |
67cdb40c RD |
1469 | { |
1470 | struct ib_uverbs_post_recv cmd; | |
1471 | struct ib_uverbs_post_recv_resp resp; | |
1472 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1473 | struct ib_qp *qp; | |
1474 | ssize_t ret = -EINVAL; | |
1475 | ||
1476 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1477 | return -EFAULT; | |
1478 | ||
1479 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1480 | in_len - sizeof cmd, cmd.wr_count, | |
1481 | cmd.sge_count, cmd.wqe_size); | |
1482 | if (IS_ERR(wr)) | |
1483 | return PTR_ERR(wr); | |
1484 | ||
95ed644f | 1485 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1486 | |
1487 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1488 | if (!qp || qp->uobject->context != file->ucontext) | |
1489 | goto out; | |
1490 | ||
1491 | resp.bad_wr = 0; | |
1492 | ret = qp->device->post_recv(qp, wr, &bad_wr); | |
1493 | if (ret) | |
1494 | for (next = wr; next; next = next->next) { | |
1495 | ++resp.bad_wr; | |
1496 | if (next == bad_wr) | |
1497 | break; | |
1498 | } | |
1499 | ||
1500 | ||
1501 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1502 | &resp, sizeof resp)) | |
1503 | ret = -EFAULT; | |
1504 | ||
1505 | out: | |
95ed644f | 1506 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1507 | |
1508 | while (wr) { | |
1509 | next = wr->next; | |
1510 | kfree(wr); | |
1511 | wr = next; | |
1512 | } | |
1513 | ||
1514 | return ret ? ret : in_len; | |
1515 | } | |
1516 | ||
1517 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1518 | const char __user *buf, int in_len, |
1519 | int out_len) | |
67cdb40c RD |
1520 | { |
1521 | struct ib_uverbs_post_srq_recv cmd; | |
1522 | struct ib_uverbs_post_srq_recv_resp resp; | |
1523 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1524 | struct ib_srq *srq; | |
1525 | ssize_t ret = -EINVAL; | |
1526 | ||
1527 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1528 | return -EFAULT; | |
1529 | ||
1530 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1531 | in_len - sizeof cmd, cmd.wr_count, | |
1532 | cmd.sge_count, cmd.wqe_size); | |
1533 | if (IS_ERR(wr)) | |
1534 | return PTR_ERR(wr); | |
1535 | ||
95ed644f | 1536 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1537 | |
1538 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1539 | if (!srq || srq->uobject->context != file->ucontext) | |
1540 | goto out; | |
1541 | ||
1542 | resp.bad_wr = 0; | |
1543 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
1544 | if (ret) | |
1545 | for (next = wr; next; next = next->next) { | |
1546 | ++resp.bad_wr; | |
1547 | if (next == bad_wr) | |
1548 | break; | |
1549 | } | |
1550 | ||
1551 | ||
1552 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1553 | &resp, sizeof resp)) | |
1554 | ret = -EFAULT; | |
1555 | ||
1556 | out: | |
95ed644f | 1557 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1558 | |
1559 | while (wr) { | |
1560 | next = wr->next; | |
1561 | kfree(wr); | |
1562 | wr = next; | |
1563 | } | |
1564 | ||
1565 | return ret ? ret : in_len; | |
1566 | } | |
1567 | ||
1568 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
1569 | const char __user *buf, int in_len, | |
1570 | int out_len) | |
1571 | { | |
1572 | struct ib_uverbs_create_ah cmd; | |
1573 | struct ib_uverbs_create_ah_resp resp; | |
1574 | struct ib_uobject *uobj; | |
1575 | struct ib_pd *pd; | |
1576 | struct ib_ah *ah; | |
1577 | struct ib_ah_attr attr; | |
1578 | int ret; | |
1579 | ||
1580 | if (out_len < sizeof resp) | |
1581 | return -ENOSPC; | |
1582 | ||
1583 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1584 | return -EFAULT; | |
1585 | ||
1586 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1587 | if (!uobj) | |
1588 | return -ENOMEM; | |
1589 | ||
95ed644f | 1590 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1591 | |
1592 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
1593 | if (!pd || pd->uobject->context != file->ucontext) { | |
1594 | ret = -EINVAL; | |
1595 | goto err_up; | |
1596 | } | |
1597 | ||
1598 | uobj->user_handle = cmd.user_handle; | |
1599 | uobj->context = file->ucontext; | |
1600 | ||
1601 | attr.dlid = cmd.attr.dlid; | |
1602 | attr.sl = cmd.attr.sl; | |
1603 | attr.src_path_bits = cmd.attr.src_path_bits; | |
1604 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 1605 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
1606 | attr.port_num = cmd.attr.port_num; |
1607 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
1608 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
1609 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
1610 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
1611 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
1612 | ||
1613 | ah = ib_create_ah(pd, &attr); | |
1614 | if (IS_ERR(ah)) { | |
1615 | ret = PTR_ERR(ah); | |
1616 | goto err_up; | |
1617 | } | |
1618 | ||
1619 | ah->uobject = uobj; | |
1620 | ||
1621 | retry: | |
1622 | if (!idr_pre_get(&ib_uverbs_ah_idr, GFP_KERNEL)) { | |
1623 | ret = -ENOMEM; | |
1624 | goto err_destroy; | |
1625 | } | |
1626 | ||
1627 | ret = idr_get_new(&ib_uverbs_ah_idr, ah, &uobj->id); | |
1628 | ||
1629 | if (ret == -EAGAIN) | |
1630 | goto retry; | |
1631 | if (ret) | |
1632 | goto err_destroy; | |
1633 | ||
1634 | resp.ah_handle = uobj->id; | |
1635 | ||
1636 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1637 | &resp, sizeof resp)) { | |
1638 | ret = -EFAULT; | |
1639 | goto err_idr; | |
1640 | } | |
1641 | ||
95ed644f | 1642 | mutex_lock(&file->mutex); |
67cdb40c | 1643 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 1644 | mutex_unlock(&file->mutex); |
67cdb40c | 1645 | |
95ed644f | 1646 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1647 | |
1648 | return in_len; | |
1649 | ||
1650 | err_idr: | |
1651 | idr_remove(&ib_uverbs_ah_idr, uobj->id); | |
1652 | ||
1653 | err_destroy: | |
1654 | ib_destroy_ah(ah); | |
1655 | ||
1656 | err_up: | |
95ed644f | 1657 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1658 | |
1659 | kfree(uobj); | |
1660 | return ret; | |
1661 | } | |
1662 | ||
1663 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
1664 | const char __user *buf, int in_len, int out_len) | |
1665 | { | |
1666 | struct ib_uverbs_destroy_ah cmd; | |
1667 | struct ib_ah *ah; | |
1668 | struct ib_uobject *uobj; | |
1669 | int ret = -EINVAL; | |
1670 | ||
1671 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1672 | return -EFAULT; | |
1673 | ||
95ed644f | 1674 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1675 | |
1676 | ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle); | |
1677 | if (!ah || ah->uobject->context != file->ucontext) | |
1678 | goto out; | |
1679 | ||
1680 | uobj = ah->uobject; | |
1681 | ||
1682 | ret = ib_destroy_ah(ah); | |
1683 | if (ret) | |
1684 | goto out; | |
1685 | ||
1686 | idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle); | |
1687 | ||
95ed644f | 1688 | mutex_lock(&file->mutex); |
67cdb40c | 1689 | list_del(&uobj->list); |
95ed644f | 1690 | mutex_unlock(&file->mutex); |
67cdb40c RD |
1691 | |
1692 | kfree(uobj); | |
1693 | ||
1694 | out: | |
95ed644f | 1695 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1696 | |
1697 | return ret ? ret : in_len; | |
1698 | } | |
1699 | ||
bc38a6ab RD |
1700 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
1701 | const char __user *buf, int in_len, | |
1702 | int out_len) | |
1703 | { | |
1704 | struct ib_uverbs_attach_mcast cmd; | |
1705 | struct ib_qp *qp; | |
f4e40156 JM |
1706 | struct ib_uqp_object *uobj; |
1707 | struct ib_uverbs_mcast_entry *mcast; | |
bc38a6ab RD |
1708 | int ret = -EINVAL; |
1709 | ||
1710 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1711 | return -EFAULT; | |
1712 | ||
95ed644f | 1713 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1714 | |
1715 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
f4e40156 JM |
1716 | if (!qp || qp->uobject->context != file->ucontext) |
1717 | goto out; | |
1718 | ||
1719 | uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); | |
1720 | ||
1721 | list_for_each_entry(mcast, &uobj->mcast_list, list) | |
1722 | if (cmd.mlid == mcast->lid && | |
1723 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1724 | ret = 0; | |
1725 | goto out; | |
1726 | } | |
1727 | ||
1728 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
1729 | if (!mcast) { | |
1730 | ret = -ENOMEM; | |
1731 | goto out; | |
1732 | } | |
1733 | ||
1734 | mcast->lid = cmd.mlid; | |
1735 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 1736 | |
f4e40156 JM |
1737 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
1738 | if (!ret) { | |
1739 | uobj = container_of(qp->uobject, struct ib_uqp_object, | |
1740 | uevent.uobject); | |
1741 | list_add_tail(&mcast->list, &uobj->mcast_list); | |
1742 | } else | |
1743 | kfree(mcast); | |
1744 | ||
1745 | out: | |
95ed644f | 1746 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1747 | |
1748 | return ret ? ret : in_len; | |
1749 | } | |
1750 | ||
1751 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
1752 | const char __user *buf, int in_len, | |
1753 | int out_len) | |
1754 | { | |
1755 | struct ib_uverbs_detach_mcast cmd; | |
f4e40156 | 1756 | struct ib_uqp_object *uobj; |
bc38a6ab | 1757 | struct ib_qp *qp; |
f4e40156 | 1758 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
1759 | int ret = -EINVAL; |
1760 | ||
1761 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1762 | return -EFAULT; | |
1763 | ||
95ed644f | 1764 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1765 | |
1766 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
f4e40156 JM |
1767 | if (!qp || qp->uobject->context != file->ucontext) |
1768 | goto out; | |
bc38a6ab | 1769 | |
f4e40156 JM |
1770 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
1771 | if (ret) | |
1772 | goto out; | |
1773 | ||
1774 | uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); | |
1775 | ||
1776 | list_for_each_entry(mcast, &uobj->mcast_list, list) | |
1777 | if (cmd.mlid == mcast->lid && | |
1778 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1779 | list_del(&mcast->list); | |
1780 | kfree(mcast); | |
1781 | break; | |
1782 | } | |
1783 | ||
1784 | out: | |
95ed644f | 1785 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1786 | |
1787 | return ret ? ret : in_len; | |
1788 | } | |
f520ba5a RD |
1789 | |
1790 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, | |
1791 | const char __user *buf, int in_len, | |
1792 | int out_len) | |
1793 | { | |
1794 | struct ib_uverbs_create_srq cmd; | |
1795 | struct ib_uverbs_create_srq_resp resp; | |
1796 | struct ib_udata udata; | |
63aaf647 | 1797 | struct ib_uevent_object *uobj; |
f520ba5a RD |
1798 | struct ib_pd *pd; |
1799 | struct ib_srq *srq; | |
1800 | struct ib_srq_init_attr attr; | |
1801 | int ret; | |
1802 | ||
1803 | if (out_len < sizeof resp) | |
1804 | return -ENOSPC; | |
1805 | ||
1806 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1807 | return -EFAULT; | |
1808 | ||
1809 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1810 | (unsigned long) cmd.response + sizeof resp, | |
1811 | in_len - sizeof cmd, out_len - sizeof resp); | |
1812 | ||
1813 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1814 | if (!uobj) | |
1815 | return -ENOMEM; | |
1816 | ||
95ed644f | 1817 | mutex_lock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1818 | |
1819 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
1820 | ||
1821 | if (!pd || pd->uobject->context != file->ucontext) { | |
1822 | ret = -EINVAL; | |
1823 | goto err_up; | |
1824 | } | |
1825 | ||
1826 | attr.event_handler = ib_uverbs_srq_event_handler; | |
1827 | attr.srq_context = file; | |
1828 | attr.attr.max_wr = cmd.max_wr; | |
1829 | attr.attr.max_sge = cmd.max_sge; | |
1830 | attr.attr.srq_limit = cmd.srq_limit; | |
1831 | ||
63aaf647 RD |
1832 | uobj->uobject.user_handle = cmd.user_handle; |
1833 | uobj->uobject.context = file->ucontext; | |
1834 | uobj->events_reported = 0; | |
1835 | INIT_LIST_HEAD(&uobj->event_list); | |
f520ba5a RD |
1836 | |
1837 | srq = pd->device->create_srq(pd, &attr, &udata); | |
1838 | if (IS_ERR(srq)) { | |
1839 | ret = PTR_ERR(srq); | |
1840 | goto err_up; | |
1841 | } | |
1842 | ||
1843 | srq->device = pd->device; | |
1844 | srq->pd = pd; | |
63aaf647 | 1845 | srq->uobject = &uobj->uobject; |
f520ba5a RD |
1846 | srq->event_handler = attr.event_handler; |
1847 | srq->srq_context = attr.srq_context; | |
1848 | atomic_inc(&pd->usecnt); | |
1849 | atomic_set(&srq->usecnt, 0); | |
1850 | ||
1851 | memset(&resp, 0, sizeof resp); | |
1852 | ||
1853 | retry: | |
1854 | if (!idr_pre_get(&ib_uverbs_srq_idr, GFP_KERNEL)) { | |
1855 | ret = -ENOMEM; | |
1856 | goto err_destroy; | |
1857 | } | |
1858 | ||
63aaf647 | 1859 | ret = idr_get_new(&ib_uverbs_srq_idr, srq, &uobj->uobject.id); |
f520ba5a RD |
1860 | |
1861 | if (ret == -EAGAIN) | |
1862 | goto retry; | |
1863 | if (ret) | |
1864 | goto err_destroy; | |
1865 | ||
63aaf647 | 1866 | resp.srq_handle = uobj->uobject.id; |
ea88fd16 DB |
1867 | resp.max_wr = attr.attr.max_wr; |
1868 | resp.max_sge = attr.attr.max_sge; | |
f520ba5a | 1869 | |
f520ba5a RD |
1870 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1871 | &resp, sizeof resp)) { | |
1872 | ret = -EFAULT; | |
eb9d3cd5 | 1873 | goto err_idr; |
f520ba5a RD |
1874 | } |
1875 | ||
95ed644f | 1876 | mutex_lock(&file->mutex); |
eb9d3cd5 | 1877 | list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list); |
95ed644f | 1878 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1879 | |
95ed644f | 1880 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1881 | |
1882 | return in_len; | |
1883 | ||
eb9d3cd5 RD |
1884 | err_idr: |
1885 | idr_remove(&ib_uverbs_srq_idr, uobj->uobject.id); | |
f520ba5a RD |
1886 | |
1887 | err_destroy: | |
1888 | ib_destroy_srq(srq); | |
b4ca1a3f | 1889 | atomic_dec(&pd->usecnt); |
f520ba5a RD |
1890 | |
1891 | err_up: | |
95ed644f | 1892 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1893 | |
1894 | kfree(uobj); | |
1895 | return ret; | |
1896 | } | |
1897 | ||
1898 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, | |
1899 | const char __user *buf, int in_len, | |
1900 | int out_len) | |
1901 | { | |
1902 | struct ib_uverbs_modify_srq cmd; | |
1903 | struct ib_srq *srq; | |
1904 | struct ib_srq_attr attr; | |
1905 | int ret; | |
1906 | ||
1907 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1908 | return -EFAULT; | |
1909 | ||
95ed644f | 1910 | mutex_lock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1911 | |
1912 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1913 | if (!srq || srq->uobject->context != file->ucontext) { | |
1914 | ret = -EINVAL; | |
1915 | goto out; | |
1916 | } | |
1917 | ||
1918 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
1919 | attr.srq_limit = cmd.srq_limit; |
1920 | ||
1921 | ret = ib_modify_srq(srq, &attr, cmd.attr_mask); | |
1922 | ||
1923 | out: | |
95ed644f | 1924 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1925 | |
1926 | return ret ? ret : in_len; | |
1927 | } | |
1928 | ||
8bdb0e86 DB |
1929 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
1930 | const char __user *buf, | |
1931 | int in_len, int out_len) | |
1932 | { | |
1933 | struct ib_uverbs_query_srq cmd; | |
1934 | struct ib_uverbs_query_srq_resp resp; | |
1935 | struct ib_srq_attr attr; | |
1936 | struct ib_srq *srq; | |
1937 | int ret; | |
1938 | ||
1939 | if (out_len < sizeof resp) | |
1940 | return -ENOSPC; | |
1941 | ||
1942 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1943 | return -EFAULT; | |
1944 | ||
1945 | mutex_lock(&ib_uverbs_idr_mutex); | |
1946 | ||
1947 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1948 | if (srq && srq->uobject->context == file->ucontext) | |
1949 | ret = ib_query_srq(srq, &attr); | |
1950 | else | |
1951 | ret = -EINVAL; | |
1952 | ||
1953 | mutex_unlock(&ib_uverbs_idr_mutex); | |
1954 | ||
1955 | if (ret) | |
1956 | goto out; | |
1957 | ||
1958 | memset(&resp, 0, sizeof resp); | |
1959 | ||
1960 | resp.max_wr = attr.max_wr; | |
1961 | resp.max_sge = attr.max_sge; | |
1962 | resp.srq_limit = attr.srq_limit; | |
1963 | ||
1964 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1965 | &resp, sizeof resp)) | |
1966 | ret = -EFAULT; | |
1967 | ||
1968 | out: | |
1969 | return ret ? ret : in_len; | |
1970 | } | |
1971 | ||
f520ba5a RD |
1972 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
1973 | const char __user *buf, int in_len, | |
1974 | int out_len) | |
1975 | { | |
63aaf647 RD |
1976 | struct ib_uverbs_destroy_srq cmd; |
1977 | struct ib_uverbs_destroy_srq_resp resp; | |
1978 | struct ib_srq *srq; | |
1979 | struct ib_uevent_object *uobj; | |
63aaf647 | 1980 | int ret = -EINVAL; |
f520ba5a RD |
1981 | |
1982 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1983 | return -EFAULT; | |
1984 | ||
95ed644f | 1985 | mutex_lock(&ib_uverbs_idr_mutex); |
f520ba5a | 1986 | |
63aaf647 RD |
1987 | memset(&resp, 0, sizeof resp); |
1988 | ||
f520ba5a RD |
1989 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
1990 | if (!srq || srq->uobject->context != file->ucontext) | |
1991 | goto out; | |
1992 | ||
63aaf647 | 1993 | uobj = container_of(srq->uobject, struct ib_uevent_object, uobject); |
f520ba5a RD |
1994 | |
1995 | ret = ib_destroy_srq(srq); | |
1996 | if (ret) | |
1997 | goto out; | |
1998 | ||
1999 | idr_remove(&ib_uverbs_srq_idr, cmd.srq_handle); | |
2000 | ||
95ed644f | 2001 | mutex_lock(&file->mutex); |
63aaf647 | 2002 | list_del(&uobj->uobject.list); |
95ed644f | 2003 | mutex_unlock(&file->mutex); |
f520ba5a | 2004 | |
70a30e16 | 2005 | ib_uverbs_release_uevent(file, uobj); |
63aaf647 RD |
2006 | |
2007 | resp.events_reported = uobj->events_reported; | |
2008 | ||
f520ba5a RD |
2009 | kfree(uobj); |
2010 | ||
63aaf647 RD |
2011 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2012 | &resp, sizeof resp)) | |
2013 | ret = -EFAULT; | |
2014 | ||
f520ba5a | 2015 | out: |
95ed644f | 2016 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
2017 | |
2018 | return ret ? ret : in_len; | |
2019 | } |