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 | 82 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
77f76013 GC |
83 | if (IS_ERR(ucontext)) { |
84 | ret = PTR_ERR(file->ucontext); | |
85 | goto err; | |
86 | } | |
bc38a6ab | 87 | |
63c47c28 RD |
88 | ucontext->device = ibdev; |
89 | INIT_LIST_HEAD(&ucontext->pd_list); | |
90 | INIT_LIST_HEAD(&ucontext->mr_list); | |
91 | INIT_LIST_HEAD(&ucontext->mw_list); | |
92 | INIT_LIST_HEAD(&ucontext->cq_list); | |
93 | INIT_LIST_HEAD(&ucontext->qp_list); | |
94 | INIT_LIST_HEAD(&ucontext->srq_list); | |
95 | INIT_LIST_HEAD(&ucontext->ah_list); | |
bc38a6ab | 96 | |
6b73597e RD |
97 | resp.num_comp_vectors = file->device->num_comp_vectors; |
98 | ||
99 | filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd); | |
100 | if (IS_ERR(filp)) { | |
101 | ret = PTR_ERR(filp); | |
102 | goto err_free; | |
103 | } | |
bc38a6ab RD |
104 | |
105 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
106 | &resp, sizeof resp)) { |
107 | ret = -EFAULT; | |
6b73597e | 108 | goto err_file; |
63c47c28 RD |
109 | } |
110 | ||
6b73597e RD |
111 | file->async_file = filp->private_data; |
112 | ||
113 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
114 | ib_uverbs_event_handler); | |
115 | ret = ib_register_event_handler(&file->event_handler); | |
116 | if (ret) | |
117 | goto err_file; | |
118 | ||
119 | kref_get(&file->async_file->ref); | |
120 | kref_get(&file->ref); | |
70a30e16 | 121 | file->ucontext = ucontext; |
6b73597e RD |
122 | |
123 | fd_install(resp.async_fd, filp); | |
124 | ||
95ed644f | 125 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
126 | |
127 | return in_len; | |
128 | ||
6b73597e RD |
129 | err_file: |
130 | put_unused_fd(resp.async_fd); | |
131 | fput(filp); | |
132 | ||
63c47c28 RD |
133 | err_free: |
134 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 135 | |
63c47c28 | 136 | err: |
95ed644f | 137 | mutex_unlock(&file->mutex); |
63c47c28 | 138 | return ret; |
bc38a6ab RD |
139 | } |
140 | ||
141 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
142 | const char __user *buf, | |
143 | int in_len, int out_len) | |
144 | { | |
145 | struct ib_uverbs_query_device cmd; | |
146 | struct ib_uverbs_query_device_resp resp; | |
147 | struct ib_device_attr attr; | |
148 | int ret; | |
149 | ||
150 | if (out_len < sizeof resp) | |
151 | return -ENOSPC; | |
152 | ||
153 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
154 | return -EFAULT; | |
155 | ||
156 | ret = ib_query_device(file->device->ib_dev, &attr); | |
157 | if (ret) | |
158 | return ret; | |
159 | ||
160 | memset(&resp, 0, sizeof resp); | |
161 | ||
162 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 163 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
164 | resp.sys_image_guid = attr.sys_image_guid; |
165 | resp.max_mr_size = attr.max_mr_size; | |
166 | resp.page_size_cap = attr.page_size_cap; | |
167 | resp.vendor_id = attr.vendor_id; | |
168 | resp.vendor_part_id = attr.vendor_part_id; | |
169 | resp.hw_ver = attr.hw_ver; | |
170 | resp.max_qp = attr.max_qp; | |
171 | resp.max_qp_wr = attr.max_qp_wr; | |
172 | resp.device_cap_flags = attr.device_cap_flags; | |
173 | resp.max_sge = attr.max_sge; | |
174 | resp.max_sge_rd = attr.max_sge_rd; | |
175 | resp.max_cq = attr.max_cq; | |
176 | resp.max_cqe = attr.max_cqe; | |
177 | resp.max_mr = attr.max_mr; | |
178 | resp.max_pd = attr.max_pd; | |
179 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
180 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
181 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
182 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
183 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
184 | resp.atomic_cap = attr.atomic_cap; | |
185 | resp.max_ee = attr.max_ee; | |
186 | resp.max_rdd = attr.max_rdd; | |
187 | resp.max_mw = attr.max_mw; | |
188 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
189 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
190 | resp.max_mcast_grp = attr.max_mcast_grp; | |
191 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
192 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
193 | resp.max_ah = attr.max_ah; | |
194 | resp.max_fmr = attr.max_fmr; | |
195 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
196 | resp.max_srq = attr.max_srq; | |
197 | resp.max_srq_wr = attr.max_srq_wr; | |
198 | resp.max_srq_sge = attr.max_srq_sge; | |
199 | resp.max_pkeys = attr.max_pkeys; | |
200 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
201 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
202 | ||
203 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
204 | &resp, sizeof resp)) | |
205 | return -EFAULT; | |
206 | ||
207 | return in_len; | |
208 | } | |
209 | ||
210 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
211 | const char __user *buf, | |
212 | int in_len, int out_len) | |
213 | { | |
214 | struct ib_uverbs_query_port cmd; | |
215 | struct ib_uverbs_query_port_resp resp; | |
216 | struct ib_port_attr attr; | |
217 | int ret; | |
218 | ||
219 | if (out_len < sizeof resp) | |
220 | return -ENOSPC; | |
221 | ||
222 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
223 | return -EFAULT; | |
224 | ||
225 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
226 | if (ret) | |
227 | return ret; | |
228 | ||
229 | memset(&resp, 0, sizeof resp); | |
230 | ||
231 | resp.state = attr.state; | |
232 | resp.max_mtu = attr.max_mtu; | |
233 | resp.active_mtu = attr.active_mtu; | |
234 | resp.gid_tbl_len = attr.gid_tbl_len; | |
235 | resp.port_cap_flags = attr.port_cap_flags; | |
236 | resp.max_msg_sz = attr.max_msg_sz; | |
237 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
238 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
239 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
240 | resp.lid = attr.lid; | |
241 | resp.sm_lid = attr.sm_lid; | |
242 | resp.lmc = attr.lmc; | |
243 | resp.max_vl_num = attr.max_vl_num; | |
244 | resp.sm_sl = attr.sm_sl; | |
245 | resp.subnet_timeout = attr.subnet_timeout; | |
246 | resp.init_type_reply = attr.init_type_reply; | |
247 | resp.active_width = attr.active_width; | |
248 | resp.active_speed = attr.active_speed; | |
249 | resp.phys_state = attr.phys_state; | |
250 | ||
251 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
252 | &resp, sizeof resp)) | |
253 | return -EFAULT; | |
254 | ||
255 | return in_len; | |
256 | } | |
257 | ||
bc38a6ab RD |
258 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
259 | const char __user *buf, | |
260 | int in_len, int out_len) | |
261 | { | |
262 | struct ib_uverbs_alloc_pd cmd; | |
263 | struct ib_uverbs_alloc_pd_resp resp; | |
264 | struct ib_udata udata; | |
265 | struct ib_uobject *uobj; | |
266 | struct ib_pd *pd; | |
267 | int ret; | |
268 | ||
269 | if (out_len < sizeof resp) | |
270 | return -ENOSPC; | |
271 | ||
272 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
273 | return -EFAULT; | |
274 | ||
275 | INIT_UDATA(&udata, buf + sizeof cmd, | |
276 | (unsigned long) cmd.response + sizeof resp, | |
277 | in_len - sizeof cmd, out_len - sizeof resp); | |
278 | ||
279 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
280 | if (!uobj) | |
281 | return -ENOMEM; | |
282 | ||
283 | uobj->context = file->ucontext; | |
284 | ||
285 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
286 | file->ucontext, &udata); | |
287 | if (IS_ERR(pd)) { | |
288 | ret = PTR_ERR(pd); | |
289 | goto err; | |
290 | } | |
291 | ||
292 | pd->device = file->device->ib_dev; | |
293 | pd->uobject = uobj; | |
294 | atomic_set(&pd->usecnt, 0); | |
295 | ||
95ed644f | 296 | mutex_lock(&ib_uverbs_idr_mutex); |
eb9d3cd5 | 297 | |
bc38a6ab RD |
298 | retry: |
299 | if (!idr_pre_get(&ib_uverbs_pd_idr, GFP_KERNEL)) { | |
300 | ret = -ENOMEM; | |
eb9d3cd5 | 301 | goto err_up; |
bc38a6ab RD |
302 | } |
303 | ||
bc38a6ab | 304 | ret = idr_get_new(&ib_uverbs_pd_idr, pd, &uobj->id); |
bc38a6ab RD |
305 | |
306 | if (ret == -EAGAIN) | |
307 | goto retry; | |
308 | if (ret) | |
eb9d3cd5 | 309 | goto err_up; |
bc38a6ab RD |
310 | |
311 | memset(&resp, 0, sizeof resp); | |
312 | resp.pd_handle = uobj->id; | |
313 | ||
314 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
315 | &resp, sizeof resp)) { | |
316 | ret = -EFAULT; | |
eb9d3cd5 | 317 | goto err_idr; |
bc38a6ab RD |
318 | } |
319 | ||
95ed644f | 320 | mutex_lock(&file->mutex); |
eb9d3cd5 | 321 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 322 | mutex_unlock(&file->mutex); |
bc38a6ab | 323 | |
95ed644f | 324 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab | 325 | |
eb9d3cd5 RD |
326 | return in_len; |
327 | ||
328 | err_idr: | |
329 | idr_remove(&ib_uverbs_pd_idr, uobj->id); | |
330 | ||
331 | err_up: | |
95ed644f | 332 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
333 | ib_dealloc_pd(pd); |
334 | ||
335 | err: | |
336 | kfree(uobj); | |
337 | return ret; | |
338 | } | |
339 | ||
340 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
341 | const char __user *buf, | |
342 | int in_len, int out_len) | |
343 | { | |
344 | struct ib_uverbs_dealloc_pd cmd; | |
345 | struct ib_pd *pd; | |
346 | struct ib_uobject *uobj; | |
347 | int ret = -EINVAL; | |
348 | ||
349 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
350 | return -EFAULT; | |
351 | ||
95ed644f | 352 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
353 | |
354 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
355 | if (!pd || pd->uobject->context != file->ucontext) | |
356 | goto out; | |
357 | ||
358 | uobj = pd->uobject; | |
359 | ||
360 | ret = ib_dealloc_pd(pd); | |
361 | if (ret) | |
362 | goto out; | |
363 | ||
364 | idr_remove(&ib_uverbs_pd_idr, cmd.pd_handle); | |
365 | ||
95ed644f | 366 | mutex_lock(&file->mutex); |
bc38a6ab | 367 | list_del(&uobj->list); |
95ed644f | 368 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
369 | |
370 | kfree(uobj); | |
371 | ||
372 | out: | |
95ed644f | 373 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
374 | |
375 | return ret ? ret : in_len; | |
376 | } | |
377 | ||
378 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, | |
379 | const char __user *buf, int in_len, | |
380 | int out_len) | |
381 | { | |
382 | struct ib_uverbs_reg_mr cmd; | |
383 | struct ib_uverbs_reg_mr_resp resp; | |
384 | struct ib_udata udata; | |
385 | struct ib_umem_object *obj; | |
386 | struct ib_pd *pd; | |
387 | struct ib_mr *mr; | |
388 | int ret; | |
389 | ||
390 | if (out_len < sizeof resp) | |
391 | return -ENOSPC; | |
392 | ||
393 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
394 | return -EFAULT; | |
395 | ||
396 | INIT_UDATA(&udata, buf + sizeof cmd, | |
397 | (unsigned long) cmd.response + sizeof resp, | |
398 | in_len - sizeof cmd, out_len - sizeof resp); | |
399 | ||
400 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
401 | return -EINVAL; | |
402 | ||
f575394f RD |
403 | /* |
404 | * Local write permission is required if remote write or | |
405 | * remote atomic permission is also requested. | |
406 | */ | |
407 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
408 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) | |
409 | return -EINVAL; | |
410 | ||
bc38a6ab RD |
411 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
412 | if (!obj) | |
413 | return -ENOMEM; | |
414 | ||
415 | obj->uobject.context = file->ucontext; | |
416 | ||
417 | /* | |
418 | * We ask for writable memory if any access flags other than | |
419 | * "remote read" are set. "Local write" and "remote write" | |
420 | * obviously require write access. "Remote atomic" can do | |
421 | * things like fetch and add, which will modify memory, and | |
422 | * "MW bind" can change permissions by binding a window. | |
423 | */ | |
424 | ret = ib_umem_get(file->device->ib_dev, &obj->umem, | |
425 | (void *) (unsigned long) cmd.start, cmd.length, | |
426 | !!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ)); | |
427 | if (ret) | |
428 | goto err_free; | |
429 | ||
430 | obj->umem.virt_base = cmd.hca_va; | |
431 | ||
95ed644f | 432 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
433 | |
434 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
435 | if (!pd || pd->uobject->context != file->ucontext) { | |
436 | ret = -EINVAL; | |
437 | goto err_up; | |
438 | } | |
439 | ||
440 | if (!pd->device->reg_user_mr) { | |
441 | ret = -ENOSYS; | |
442 | goto err_up; | |
443 | } | |
444 | ||
445 | mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata); | |
446 | if (IS_ERR(mr)) { | |
447 | ret = PTR_ERR(mr); | |
448 | goto err_up; | |
449 | } | |
450 | ||
451 | mr->device = pd->device; | |
452 | mr->pd = pd; | |
453 | mr->uobject = &obj->uobject; | |
454 | atomic_inc(&pd->usecnt); | |
455 | atomic_set(&mr->usecnt, 0); | |
456 | ||
457 | memset(&resp, 0, sizeof resp); | |
458 | resp.lkey = mr->lkey; | |
459 | resp.rkey = mr->rkey; | |
460 | ||
461 | retry: | |
462 | if (!idr_pre_get(&ib_uverbs_mr_idr, GFP_KERNEL)) { | |
463 | ret = -ENOMEM; | |
464 | goto err_unreg; | |
465 | } | |
466 | ||
467 | ret = idr_get_new(&ib_uverbs_mr_idr, mr, &obj->uobject.id); | |
468 | ||
469 | if (ret == -EAGAIN) | |
470 | goto retry; | |
471 | if (ret) | |
472 | goto err_unreg; | |
473 | ||
474 | resp.mr_handle = obj->uobject.id; | |
475 | ||
bc38a6ab RD |
476 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
477 | &resp, sizeof resp)) { | |
478 | ret = -EFAULT; | |
eb9d3cd5 | 479 | goto err_idr; |
bc38a6ab RD |
480 | } |
481 | ||
95ed644f | 482 | mutex_lock(&file->mutex); |
eb9d3cd5 | 483 | list_add_tail(&obj->uobject.list, &file->ucontext->mr_list); |
95ed644f | 484 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 485 | |
95ed644f | 486 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
487 | |
488 | return in_len; | |
489 | ||
eb9d3cd5 RD |
490 | err_idr: |
491 | idr_remove(&ib_uverbs_mr_idr, obj->uobject.id); | |
bc38a6ab RD |
492 | |
493 | err_unreg: | |
494 | ib_dereg_mr(mr); | |
495 | ||
496 | err_up: | |
95ed644f | 497 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
498 | |
499 | ib_umem_release(file->device->ib_dev, &obj->umem); | |
500 | ||
501 | err_free: | |
502 | kfree(obj); | |
503 | return ret; | |
504 | } | |
505 | ||
506 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
507 | const char __user *buf, int in_len, | |
508 | int out_len) | |
509 | { | |
510 | struct ib_uverbs_dereg_mr cmd; | |
511 | struct ib_mr *mr; | |
512 | struct ib_umem_object *memobj; | |
513 | int ret = -EINVAL; | |
514 | ||
515 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
516 | return -EFAULT; | |
517 | ||
95ed644f | 518 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
519 | |
520 | mr = idr_find(&ib_uverbs_mr_idr, cmd.mr_handle); | |
521 | if (!mr || mr->uobject->context != file->ucontext) | |
522 | goto out; | |
523 | ||
524 | memobj = container_of(mr->uobject, struct ib_umem_object, uobject); | |
525 | ||
526 | ret = ib_dereg_mr(mr); | |
527 | if (ret) | |
528 | goto out; | |
529 | ||
530 | idr_remove(&ib_uverbs_mr_idr, cmd.mr_handle); | |
531 | ||
95ed644f | 532 | mutex_lock(&file->mutex); |
bc38a6ab | 533 | list_del(&memobj->uobject.list); |
95ed644f | 534 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
535 | |
536 | ib_umem_release(file->device->ib_dev, &memobj->umem); | |
537 | kfree(memobj); | |
538 | ||
539 | out: | |
95ed644f | 540 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
541 | |
542 | return ret ? ret : in_len; | |
543 | } | |
544 | ||
6b73597e RD |
545 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
546 | const char __user *buf, int in_len, | |
547 | int out_len) | |
548 | { | |
549 | struct ib_uverbs_create_comp_channel cmd; | |
550 | struct ib_uverbs_create_comp_channel_resp resp; | |
551 | struct file *filp; | |
552 | ||
553 | if (out_len < sizeof resp) | |
554 | return -ENOSPC; | |
555 | ||
556 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
557 | return -EFAULT; | |
558 | ||
559 | filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd); | |
560 | if (IS_ERR(filp)) | |
561 | return PTR_ERR(filp); | |
562 | ||
563 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
564 | &resp, sizeof resp)) { | |
565 | put_unused_fd(resp.fd); | |
566 | fput(filp); | |
567 | return -EFAULT; | |
568 | } | |
569 | ||
570 | fd_install(resp.fd, filp); | |
571 | return in_len; | |
572 | } | |
573 | ||
bc38a6ab RD |
574 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
575 | const char __user *buf, int in_len, | |
576 | int out_len) | |
577 | { | |
578 | struct ib_uverbs_create_cq cmd; | |
579 | struct ib_uverbs_create_cq_resp resp; | |
580 | struct ib_udata udata; | |
63aaf647 | 581 | struct ib_ucq_object *uobj; |
6b73597e | 582 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
583 | struct ib_cq *cq; |
584 | int ret; | |
585 | ||
586 | if (out_len < sizeof resp) | |
587 | return -ENOSPC; | |
588 | ||
589 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
590 | return -EFAULT; | |
591 | ||
592 | INIT_UDATA(&udata, buf + sizeof cmd, | |
593 | (unsigned long) cmd.response + sizeof resp, | |
594 | in_len - sizeof cmd, out_len - sizeof resp); | |
595 | ||
6b73597e | 596 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
bc38a6ab RD |
597 | return -EINVAL; |
598 | ||
599 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
600 | if (!uobj) | |
601 | return -ENOMEM; | |
602 | ||
ac4e7b35 JM |
603 | if (cmd.comp_channel >= 0) { |
604 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); | |
605 | if (!ev_file) { | |
606 | ret = -EINVAL; | |
607 | goto err; | |
608 | } | |
609 | } | |
610 | ||
63aaf647 RD |
611 | uobj->uobject.user_handle = cmd.user_handle; |
612 | uobj->uobject.context = file->ucontext; | |
7162a3e0 | 613 | uobj->uverbs_file = file; |
63aaf647 RD |
614 | uobj->comp_events_reported = 0; |
615 | uobj->async_events_reported = 0; | |
616 | INIT_LIST_HEAD(&uobj->comp_list); | |
617 | INIT_LIST_HEAD(&uobj->async_list); | |
bc38a6ab RD |
618 | |
619 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, | |
620 | file->ucontext, &udata); | |
621 | if (IS_ERR(cq)) { | |
622 | ret = PTR_ERR(cq); | |
623 | goto err; | |
624 | } | |
625 | ||
626 | cq->device = file->device->ib_dev; | |
63aaf647 | 627 | cq->uobject = &uobj->uobject; |
bc38a6ab RD |
628 | cq->comp_handler = ib_uverbs_comp_handler; |
629 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 630 | cq->cq_context = ev_file; |
bc38a6ab RD |
631 | atomic_set(&cq->usecnt, 0); |
632 | ||
95ed644f | 633 | mutex_lock(&ib_uverbs_idr_mutex); |
eb9d3cd5 | 634 | |
bc38a6ab RD |
635 | retry: |
636 | if (!idr_pre_get(&ib_uverbs_cq_idr, GFP_KERNEL)) { | |
637 | ret = -ENOMEM; | |
eb9d3cd5 | 638 | goto err_up; |
bc38a6ab RD |
639 | } |
640 | ||
63aaf647 | 641 | ret = idr_get_new(&ib_uverbs_cq_idr, cq, &uobj->uobject.id); |
bc38a6ab RD |
642 | |
643 | if (ret == -EAGAIN) | |
644 | goto retry; | |
645 | if (ret) | |
eb9d3cd5 | 646 | goto err_up; |
bc38a6ab RD |
647 | |
648 | memset(&resp, 0, sizeof resp); | |
63aaf647 | 649 | resp.cq_handle = uobj->uobject.id; |
bc38a6ab RD |
650 | resp.cqe = cq->cqe; |
651 | ||
652 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
653 | &resp, sizeof resp)) { | |
654 | ret = -EFAULT; | |
eb9d3cd5 | 655 | goto err_idr; |
bc38a6ab RD |
656 | } |
657 | ||
95ed644f | 658 | mutex_lock(&file->mutex); |
eb9d3cd5 | 659 | list_add_tail(&uobj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 660 | mutex_unlock(&file->mutex); |
bc38a6ab | 661 | |
95ed644f | 662 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab | 663 | |
eb9d3cd5 RD |
664 | return in_len; |
665 | ||
666 | err_idr: | |
667 | idr_remove(&ib_uverbs_cq_idr, uobj->uobject.id); | |
668 | ||
669 | err_up: | |
95ed644f | 670 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
671 | ib_destroy_cq(cq); |
672 | ||
673 | err: | |
ac4e7b35 JM |
674 | if (ev_file) |
675 | ib_uverbs_release_ucq(file, ev_file, uobj); | |
bc38a6ab RD |
676 | kfree(uobj); |
677 | return ret; | |
678 | } | |
679 | ||
33b9b3ee RD |
680 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
681 | const char __user *buf, int in_len, | |
682 | int out_len) | |
683 | { | |
684 | struct ib_uverbs_resize_cq cmd; | |
685 | struct ib_uverbs_resize_cq_resp resp; | |
686 | struct ib_udata udata; | |
687 | struct ib_cq *cq; | |
688 | int ret = -EINVAL; | |
689 | ||
690 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
691 | return -EFAULT; | |
692 | ||
693 | INIT_UDATA(&udata, buf + sizeof cmd, | |
694 | (unsigned long) cmd.response + sizeof resp, | |
695 | in_len - sizeof cmd, out_len - sizeof resp); | |
696 | ||
697 | mutex_lock(&ib_uverbs_idr_mutex); | |
698 | ||
699 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); | |
700 | if (!cq || cq->uobject->context != file->ucontext || !cq->device->resize_cq) | |
701 | goto out; | |
702 | ||
703 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
704 | if (ret) | |
705 | goto out; | |
706 | ||
707 | memset(&resp, 0, sizeof resp); | |
708 | resp.cqe = cq->cqe; | |
709 | ||
710 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
711 | &resp, sizeof resp)) | |
712 | ret = -EFAULT; | |
713 | ||
714 | out: | |
715 | mutex_unlock(&ib_uverbs_idr_mutex); | |
716 | ||
717 | return ret ? ret : in_len; | |
718 | } | |
719 | ||
67cdb40c RD |
720 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
721 | const char __user *buf, int in_len, | |
722 | int out_len) | |
723 | { | |
724 | struct ib_uverbs_poll_cq cmd; | |
725 | struct ib_uverbs_poll_cq_resp *resp; | |
726 | struct ib_cq *cq; | |
727 | struct ib_wc *wc; | |
728 | int ret = 0; | |
729 | int i; | |
730 | int rsize; | |
731 | ||
732 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
733 | return -EFAULT; | |
734 | ||
735 | wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL); | |
736 | if (!wc) | |
737 | return -ENOMEM; | |
738 | ||
739 | rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc); | |
740 | resp = kmalloc(rsize, GFP_KERNEL); | |
741 | if (!resp) { | |
742 | ret = -ENOMEM; | |
743 | goto out_wc; | |
744 | } | |
745 | ||
95ed644f | 746 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
747 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
748 | if (!cq || cq->uobject->context != file->ucontext) { | |
749 | ret = -EINVAL; | |
750 | goto out; | |
751 | } | |
752 | ||
753 | resp->count = ib_poll_cq(cq, cmd.ne, wc); | |
754 | ||
755 | for (i = 0; i < resp->count; i++) { | |
756 | resp->wc[i].wr_id = wc[i].wr_id; | |
757 | resp->wc[i].status = wc[i].status; | |
758 | resp->wc[i].opcode = wc[i].opcode; | |
759 | resp->wc[i].vendor_err = wc[i].vendor_err; | |
760 | resp->wc[i].byte_len = wc[i].byte_len; | |
77369ed3 | 761 | resp->wc[i].imm_data = (__u32 __force) wc[i].imm_data; |
67cdb40c RD |
762 | resp->wc[i].qp_num = wc[i].qp_num; |
763 | resp->wc[i].src_qp = wc[i].src_qp; | |
764 | resp->wc[i].wc_flags = wc[i].wc_flags; | |
765 | resp->wc[i].pkey_index = wc[i].pkey_index; | |
766 | resp->wc[i].slid = wc[i].slid; | |
767 | resp->wc[i].sl = wc[i].sl; | |
768 | resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits; | |
769 | resp->wc[i].port_num = wc[i].port_num; | |
770 | } | |
771 | ||
772 | if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize)) | |
773 | ret = -EFAULT; | |
774 | ||
775 | out: | |
95ed644f | 776 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
777 | kfree(resp); |
778 | ||
779 | out_wc: | |
780 | kfree(wc); | |
781 | return ret ? ret : in_len; | |
782 | } | |
783 | ||
784 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
785 | const char __user *buf, int in_len, | |
786 | int out_len) | |
787 | { | |
788 | struct ib_uverbs_req_notify_cq cmd; | |
789 | struct ib_cq *cq; | |
790 | int ret = -EINVAL; | |
791 | ||
792 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
793 | return -EFAULT; | |
794 | ||
95ed644f | 795 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
796 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); |
797 | if (cq && cq->uobject->context == file->ucontext) { | |
798 | ib_req_notify_cq(cq, cmd.solicited_only ? | |
799 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
800 | ret = in_len; | |
801 | } | |
95ed644f | 802 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
803 | |
804 | return ret; | |
805 | } | |
806 | ||
bc38a6ab RD |
807 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
808 | const char __user *buf, int in_len, | |
809 | int out_len) | |
810 | { | |
63aaf647 RD |
811 | struct ib_uverbs_destroy_cq cmd; |
812 | struct ib_uverbs_destroy_cq_resp resp; | |
813 | struct ib_cq *cq; | |
814 | struct ib_ucq_object *uobj; | |
6b73597e | 815 | struct ib_uverbs_event_file *ev_file; |
63aaf647 RD |
816 | u64 user_handle; |
817 | int ret = -EINVAL; | |
bc38a6ab RD |
818 | |
819 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
820 | return -EFAULT; | |
821 | ||
63aaf647 RD |
822 | memset(&resp, 0, sizeof resp); |
823 | ||
95ed644f | 824 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
825 | |
826 | cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle); | |
827 | if (!cq || cq->uobject->context != file->ucontext) | |
828 | goto out; | |
829 | ||
63aaf647 | 830 | user_handle = cq->uobject->user_handle; |
6b73597e RD |
831 | uobj = container_of(cq->uobject, struct ib_ucq_object, uobject); |
832 | ev_file = cq->cq_context; | |
bc38a6ab RD |
833 | |
834 | ret = ib_destroy_cq(cq); | |
835 | if (ret) | |
836 | goto out; | |
837 | ||
838 | idr_remove(&ib_uverbs_cq_idr, cmd.cq_handle); | |
839 | ||
95ed644f | 840 | mutex_lock(&file->mutex); |
63aaf647 | 841 | list_del(&uobj->uobject.list); |
95ed644f | 842 | mutex_unlock(&file->mutex); |
bc38a6ab | 843 | |
70a30e16 | 844 | ib_uverbs_release_ucq(file, ev_file, uobj); |
63aaf647 RD |
845 | |
846 | resp.comp_events_reported = uobj->comp_events_reported; | |
847 | resp.async_events_reported = uobj->async_events_reported; | |
848 | ||
bc38a6ab RD |
849 | kfree(uobj); |
850 | ||
63aaf647 RD |
851 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
852 | &resp, sizeof resp)) | |
853 | ret = -EFAULT; | |
854 | ||
bc38a6ab | 855 | out: |
95ed644f | 856 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
857 | |
858 | return ret ? ret : in_len; | |
859 | } | |
860 | ||
861 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
862 | const char __user *buf, int in_len, | |
863 | int out_len) | |
864 | { | |
865 | struct ib_uverbs_create_qp cmd; | |
866 | struct ib_uverbs_create_qp_resp resp; | |
867 | struct ib_udata udata; | |
f4e40156 | 868 | struct ib_uqp_object *uobj; |
bc38a6ab RD |
869 | struct ib_pd *pd; |
870 | struct ib_cq *scq, *rcq; | |
f520ba5a | 871 | struct ib_srq *srq; |
bc38a6ab RD |
872 | struct ib_qp *qp; |
873 | struct ib_qp_init_attr attr; | |
874 | int ret; | |
875 | ||
876 | if (out_len < sizeof resp) | |
877 | return -ENOSPC; | |
878 | ||
879 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
880 | return -EFAULT; | |
881 | ||
882 | INIT_UDATA(&udata, buf + sizeof cmd, | |
883 | (unsigned long) cmd.response + sizeof resp, | |
884 | in_len - sizeof cmd, out_len - sizeof resp); | |
885 | ||
886 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
887 | if (!uobj) | |
888 | return -ENOMEM; | |
889 | ||
95ed644f | 890 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
891 | |
892 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
893 | scq = idr_find(&ib_uverbs_cq_idr, cmd.send_cq_handle); | |
894 | rcq = idr_find(&ib_uverbs_cq_idr, cmd.recv_cq_handle); | |
f520ba5a | 895 | srq = cmd.is_srq ? idr_find(&ib_uverbs_srq_idr, cmd.srq_handle) : NULL; |
bc38a6ab RD |
896 | |
897 | if (!pd || pd->uobject->context != file->ucontext || | |
898 | !scq || scq->uobject->context != file->ucontext || | |
f520ba5a RD |
899 | !rcq || rcq->uobject->context != file->ucontext || |
900 | (cmd.is_srq && (!srq || srq->uobject->context != file->ucontext))) { | |
bc38a6ab RD |
901 | ret = -EINVAL; |
902 | goto err_up; | |
903 | } | |
904 | ||
905 | attr.event_handler = ib_uverbs_qp_event_handler; | |
906 | attr.qp_context = file; | |
907 | attr.send_cq = scq; | |
908 | attr.recv_cq = rcq; | |
f520ba5a | 909 | attr.srq = srq; |
bc38a6ab RD |
910 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
911 | attr.qp_type = cmd.qp_type; | |
912 | ||
913 | attr.cap.max_send_wr = cmd.max_send_wr; | |
914 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
915 | attr.cap.max_send_sge = cmd.max_send_sge; | |
916 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
917 | attr.cap.max_inline_data = cmd.max_inline_data; | |
918 | ||
f4e40156 JM |
919 | uobj->uevent.uobject.user_handle = cmd.user_handle; |
920 | uobj->uevent.uobject.context = file->ucontext; | |
921 | uobj->uevent.events_reported = 0; | |
922 | INIT_LIST_HEAD(&uobj->uevent.event_list); | |
923 | INIT_LIST_HEAD(&uobj->mcast_list); | |
bc38a6ab RD |
924 | |
925 | qp = pd->device->create_qp(pd, &attr, &udata); | |
926 | if (IS_ERR(qp)) { | |
927 | ret = PTR_ERR(qp); | |
928 | goto err_up; | |
929 | } | |
930 | ||
931 | qp->device = pd->device; | |
932 | qp->pd = pd; | |
933 | qp->send_cq = attr.send_cq; | |
934 | qp->recv_cq = attr.recv_cq; | |
935 | qp->srq = attr.srq; | |
f4e40156 | 936 | qp->uobject = &uobj->uevent.uobject; |
bc38a6ab RD |
937 | qp->event_handler = attr.event_handler; |
938 | qp->qp_context = attr.qp_context; | |
939 | qp->qp_type = attr.qp_type; | |
940 | atomic_inc(&pd->usecnt); | |
941 | atomic_inc(&attr.send_cq->usecnt); | |
942 | atomic_inc(&attr.recv_cq->usecnt); | |
943 | if (attr.srq) | |
944 | atomic_inc(&attr.srq->usecnt); | |
945 | ||
946 | memset(&resp, 0, sizeof resp); | |
947 | resp.qpn = qp->qp_num; | |
948 | ||
949 | retry: | |
950 | if (!idr_pre_get(&ib_uverbs_qp_idr, GFP_KERNEL)) { | |
951 | ret = -ENOMEM; | |
952 | goto err_destroy; | |
953 | } | |
954 | ||
f4e40156 | 955 | ret = idr_get_new(&ib_uverbs_qp_idr, qp, &uobj->uevent.uobject.id); |
bc38a6ab RD |
956 | |
957 | if (ret == -EAGAIN) | |
958 | goto retry; | |
959 | if (ret) | |
960 | goto err_destroy; | |
961 | ||
f4e40156 | 962 | resp.qp_handle = uobj->uevent.uobject.id; |
77369ed3 JM |
963 | resp.max_recv_sge = attr.cap.max_recv_sge; |
964 | resp.max_send_sge = attr.cap.max_send_sge; | |
965 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
966 | resp.max_send_wr = attr.cap.max_send_wr; | |
967 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 968 | |
bc38a6ab RD |
969 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
970 | &resp, sizeof resp)) { | |
971 | ret = -EFAULT; | |
eb9d3cd5 | 972 | goto err_idr; |
bc38a6ab RD |
973 | } |
974 | ||
95ed644f | 975 | mutex_lock(&file->mutex); |
f4e40156 | 976 | list_add_tail(&uobj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 977 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 978 | |
95ed644f | 979 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
980 | |
981 | return in_len; | |
982 | ||
eb9d3cd5 | 983 | err_idr: |
f4e40156 | 984 | idr_remove(&ib_uverbs_qp_idr, uobj->uevent.uobject.id); |
bc38a6ab RD |
985 | |
986 | err_destroy: | |
987 | ib_destroy_qp(qp); | |
988 | ||
989 | err_up: | |
95ed644f | 990 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
991 | |
992 | kfree(uobj); | |
993 | return ret; | |
994 | } | |
995 | ||
7ccc9a24 DB |
996 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
997 | const char __user *buf, int in_len, | |
998 | int out_len) | |
999 | { | |
1000 | struct ib_uverbs_query_qp cmd; | |
1001 | struct ib_uverbs_query_qp_resp resp; | |
1002 | struct ib_qp *qp; | |
1003 | struct ib_qp_attr *attr; | |
1004 | struct ib_qp_init_attr *init_attr; | |
1005 | int ret; | |
1006 | ||
1007 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1008 | return -EFAULT; | |
1009 | ||
1010 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1011 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
1012 | if (!attr || !init_attr) { | |
1013 | ret = -ENOMEM; | |
1014 | goto out; | |
1015 | } | |
1016 | ||
1017 | mutex_lock(&ib_uverbs_idr_mutex); | |
1018 | ||
1019 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1020 | if (qp && qp->uobject->context == file->ucontext) | |
1021 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
1022 | else | |
1023 | ret = -EINVAL; | |
1024 | ||
1025 | mutex_unlock(&ib_uverbs_idr_mutex); | |
1026 | ||
1027 | if (ret) | |
1028 | goto out; | |
1029 | ||
1030 | memset(&resp, 0, sizeof resp); | |
1031 | ||
1032 | resp.qp_state = attr->qp_state; | |
1033 | resp.cur_qp_state = attr->cur_qp_state; | |
1034 | resp.path_mtu = attr->path_mtu; | |
1035 | resp.path_mig_state = attr->path_mig_state; | |
1036 | resp.qkey = attr->qkey; | |
1037 | resp.rq_psn = attr->rq_psn; | |
1038 | resp.sq_psn = attr->sq_psn; | |
1039 | resp.dest_qp_num = attr->dest_qp_num; | |
1040 | resp.qp_access_flags = attr->qp_access_flags; | |
1041 | resp.pkey_index = attr->pkey_index; | |
1042 | resp.alt_pkey_index = attr->alt_pkey_index; | |
1043 | resp.en_sqd_async_notify = attr->en_sqd_async_notify; | |
1044 | resp.max_rd_atomic = attr->max_rd_atomic; | |
1045 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1046 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1047 | resp.port_num = attr->port_num; | |
1048 | resp.timeout = attr->timeout; | |
1049 | resp.retry_cnt = attr->retry_cnt; | |
1050 | resp.rnr_retry = attr->rnr_retry; | |
1051 | resp.alt_port_num = attr->alt_port_num; | |
1052 | resp.alt_timeout = attr->alt_timeout; | |
1053 | ||
1054 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1055 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1056 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1057 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1058 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1059 | resp.dest.dlid = attr->ah_attr.dlid; | |
1060 | resp.dest.sl = attr->ah_attr.sl; | |
1061 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1062 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1063 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1064 | resp.dest.port_num = attr->ah_attr.port_num; | |
1065 | ||
1066 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1067 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1068 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1069 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1070 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1071 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1072 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1073 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1074 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1075 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1076 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1077 | ||
1078 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1079 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1080 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1081 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1082 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1083 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1084 | |
1085 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1086 | &resp, sizeof resp)) | |
1087 | ret = -EFAULT; | |
1088 | ||
1089 | out: | |
1090 | kfree(attr); | |
1091 | kfree(init_attr); | |
1092 | ||
1093 | return ret ? ret : in_len; | |
1094 | } | |
1095 | ||
bc38a6ab RD |
1096 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1097 | const char __user *buf, int in_len, | |
1098 | int out_len) | |
1099 | { | |
1100 | struct ib_uverbs_modify_qp cmd; | |
1101 | struct ib_qp *qp; | |
1102 | struct ib_qp_attr *attr; | |
1103 | int ret; | |
1104 | ||
1105 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1106 | return -EFAULT; | |
1107 | ||
1108 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1109 | if (!attr) | |
1110 | return -ENOMEM; | |
1111 | ||
95ed644f | 1112 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1113 | |
1114 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1115 | if (!qp || qp->uobject->context != file->ucontext) { | |
1116 | ret = -EINVAL; | |
1117 | goto out; | |
1118 | } | |
1119 | ||
1120 | attr->qp_state = cmd.qp_state; | |
1121 | attr->cur_qp_state = cmd.cur_qp_state; | |
1122 | attr->path_mtu = cmd.path_mtu; | |
1123 | attr->path_mig_state = cmd.path_mig_state; | |
1124 | attr->qkey = cmd.qkey; | |
1125 | attr->rq_psn = cmd.rq_psn; | |
1126 | attr->sq_psn = cmd.sq_psn; | |
1127 | attr->dest_qp_num = cmd.dest_qp_num; | |
1128 | attr->qp_access_flags = cmd.qp_access_flags; | |
1129 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1130 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1131 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1132 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1133 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1134 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1135 | attr->port_num = cmd.port_num; | |
1136 | attr->timeout = cmd.timeout; | |
1137 | attr->retry_cnt = cmd.retry_cnt; | |
1138 | attr->rnr_retry = cmd.rnr_retry; | |
1139 | attr->alt_port_num = cmd.alt_port_num; | |
1140 | attr->alt_timeout = cmd.alt_timeout; | |
1141 | ||
1142 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1143 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1144 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1145 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1146 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1147 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1148 | attr->ah_attr.sl = cmd.dest.sl; | |
1149 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1150 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1151 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1152 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1153 | ||
1154 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1155 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1156 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1157 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1158 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1159 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1160 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1161 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1162 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1163 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1164 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1165 | ||
1166 | ret = ib_modify_qp(qp, attr, cmd.attr_mask); | |
1167 | if (ret) | |
1168 | goto out; | |
1169 | ||
1170 | ret = in_len; | |
1171 | ||
1172 | out: | |
95ed644f | 1173 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1174 | kfree(attr); |
1175 | ||
1176 | return ret; | |
1177 | } | |
1178 | ||
1179 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1180 | const char __user *buf, int in_len, | |
1181 | int out_len) | |
1182 | { | |
63aaf647 RD |
1183 | struct ib_uverbs_destroy_qp cmd; |
1184 | struct ib_uverbs_destroy_qp_resp resp; | |
1185 | struct ib_qp *qp; | |
f4e40156 | 1186 | struct ib_uqp_object *uobj; |
63aaf647 | 1187 | int ret = -EINVAL; |
bc38a6ab RD |
1188 | |
1189 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1190 | return -EFAULT; | |
1191 | ||
63aaf647 RD |
1192 | memset(&resp, 0, sizeof resp); |
1193 | ||
95ed644f | 1194 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1195 | |
1196 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1197 | if (!qp || qp->uobject->context != file->ucontext) | |
1198 | goto out; | |
1199 | ||
f4e40156 JM |
1200 | uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
1201 | ||
1202 | if (!list_empty(&uobj->mcast_list)) { | |
1203 | ret = -EBUSY; | |
1204 | goto out; | |
1205 | } | |
bc38a6ab RD |
1206 | |
1207 | ret = ib_destroy_qp(qp); | |
1208 | if (ret) | |
1209 | goto out; | |
1210 | ||
1211 | idr_remove(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1212 | ||
95ed644f | 1213 | mutex_lock(&file->mutex); |
f4e40156 | 1214 | list_del(&uobj->uevent.uobject.list); |
95ed644f | 1215 | mutex_unlock(&file->mutex); |
bc38a6ab | 1216 | |
f4e40156 | 1217 | ib_uverbs_release_uevent(file, &uobj->uevent); |
63aaf647 | 1218 | |
f4e40156 | 1219 | resp.events_reported = uobj->uevent.events_reported; |
63aaf647 | 1220 | |
bc38a6ab RD |
1221 | kfree(uobj); |
1222 | ||
63aaf647 RD |
1223 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1224 | &resp, sizeof resp)) | |
1225 | ret = -EFAULT; | |
1226 | ||
bc38a6ab | 1227 | out: |
95ed644f | 1228 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1229 | |
1230 | return ret ? ret : in_len; | |
1231 | } | |
1232 | ||
67cdb40c | 1233 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
1234 | const char __user *buf, int in_len, |
1235 | int out_len) | |
67cdb40c RD |
1236 | { |
1237 | struct ib_uverbs_post_send cmd; | |
1238 | struct ib_uverbs_post_send_resp resp; | |
1239 | struct ib_uverbs_send_wr *user_wr; | |
1240 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
1241 | struct ib_qp *qp; | |
1242 | int i, sg_ind; | |
1243 | ssize_t ret = -EINVAL; | |
1244 | ||
1245 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1246 | return -EFAULT; | |
1247 | ||
1248 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
1249 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
1250 | return -EINVAL; | |
1251 | ||
1252 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
1253 | return -EINVAL; | |
1254 | ||
1255 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
1256 | if (!user_wr) | |
1257 | return -ENOMEM; | |
1258 | ||
95ed644f | 1259 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1260 | |
1261 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1262 | if (!qp || qp->uobject->context != file->ucontext) | |
1263 | goto out; | |
1264 | ||
1265 | sg_ind = 0; | |
1266 | last = NULL; | |
1267 | for (i = 0; i < cmd.wr_count; ++i) { | |
1268 | if (copy_from_user(user_wr, | |
1269 | buf + sizeof cmd + i * cmd.wqe_size, | |
1270 | cmd.wqe_size)) { | |
1271 | ret = -EFAULT; | |
1272 | goto out; | |
1273 | } | |
1274 | ||
1275 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
1276 | ret = -EINVAL; | |
1277 | goto out; | |
1278 | } | |
1279 | ||
1280 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1281 | user_wr->num_sge * sizeof (struct ib_sge), | |
1282 | GFP_KERNEL); | |
1283 | if (!next) { | |
1284 | ret = -ENOMEM; | |
1285 | goto out; | |
1286 | } | |
1287 | ||
1288 | if (!last) | |
1289 | wr = next; | |
1290 | else | |
1291 | last->next = next; | |
1292 | last = next; | |
1293 | ||
1294 | next->next = NULL; | |
1295 | next->wr_id = user_wr->wr_id; | |
1296 | next->num_sge = user_wr->num_sge; | |
1297 | next->opcode = user_wr->opcode; | |
1298 | next->send_flags = user_wr->send_flags; | |
77369ed3 | 1299 | next->imm_data = (__be32 __force) user_wr->imm_data; |
67cdb40c RD |
1300 | |
1301 | if (qp->qp_type == IB_QPT_UD) { | |
1302 | next->wr.ud.ah = idr_find(&ib_uverbs_ah_idr, | |
1303 | user_wr->wr.ud.ah); | |
1304 | if (!next->wr.ud.ah) { | |
1305 | ret = -EINVAL; | |
1306 | goto out; | |
1307 | } | |
1308 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
1309 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
1310 | } else { | |
1311 | switch (next->opcode) { | |
1312 | case IB_WR_RDMA_WRITE: | |
1313 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
1314 | case IB_WR_RDMA_READ: | |
1315 | next->wr.rdma.remote_addr = | |
1316 | user_wr->wr.rdma.remote_addr; | |
1317 | next->wr.rdma.rkey = | |
1318 | user_wr->wr.rdma.rkey; | |
1319 | break; | |
1320 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
1321 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
1322 | next->wr.atomic.remote_addr = | |
1323 | user_wr->wr.atomic.remote_addr; | |
1324 | next->wr.atomic.compare_add = | |
1325 | user_wr->wr.atomic.compare_add; | |
1326 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
1327 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
1328 | break; | |
1329 | default: | |
1330 | break; | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | if (next->num_sge) { | |
1335 | next->sg_list = (void *) next + | |
1336 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1337 | if (copy_from_user(next->sg_list, | |
1338 | buf + sizeof cmd + | |
1339 | cmd.wr_count * cmd.wqe_size + | |
1340 | sg_ind * sizeof (struct ib_sge), | |
1341 | next->num_sge * sizeof (struct ib_sge))) { | |
1342 | ret = -EFAULT; | |
1343 | goto out; | |
1344 | } | |
1345 | sg_ind += next->num_sge; | |
1346 | } else | |
1347 | next->sg_list = NULL; | |
1348 | } | |
1349 | ||
1350 | resp.bad_wr = 0; | |
1351 | ret = qp->device->post_send(qp, wr, &bad_wr); | |
1352 | if (ret) | |
1353 | for (next = wr; next; next = next->next) { | |
1354 | ++resp.bad_wr; | |
1355 | if (next == bad_wr) | |
1356 | break; | |
1357 | } | |
1358 | ||
1359 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1360 | &resp, sizeof resp)) | |
1361 | ret = -EFAULT; | |
1362 | ||
1363 | out: | |
95ed644f | 1364 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1365 | |
1366 | while (wr) { | |
1367 | next = wr->next; | |
1368 | kfree(wr); | |
1369 | wr = next; | |
1370 | } | |
1371 | ||
1372 | kfree(user_wr); | |
1373 | ||
1374 | return ret ? ret : in_len; | |
1375 | } | |
1376 | ||
1377 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
1378 | int in_len, | |
1379 | u32 wr_count, | |
1380 | u32 sge_count, | |
1381 | u32 wqe_size) | |
1382 | { | |
1383 | struct ib_uverbs_recv_wr *user_wr; | |
1384 | struct ib_recv_wr *wr = NULL, *last, *next; | |
1385 | int sg_ind; | |
1386 | int i; | |
1387 | int ret; | |
1388 | ||
1389 | if (in_len < wqe_size * wr_count + | |
1390 | sge_count * sizeof (struct ib_uverbs_sge)) | |
1391 | return ERR_PTR(-EINVAL); | |
1392 | ||
1393 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
1394 | return ERR_PTR(-EINVAL); | |
1395 | ||
1396 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
1397 | if (!user_wr) | |
1398 | return ERR_PTR(-ENOMEM); | |
1399 | ||
1400 | sg_ind = 0; | |
1401 | last = NULL; | |
1402 | for (i = 0; i < wr_count; ++i) { | |
1403 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
1404 | wqe_size)) { | |
1405 | ret = -EFAULT; | |
1406 | goto err; | |
1407 | } | |
1408 | ||
1409 | if (user_wr->num_sge + sg_ind > sge_count) { | |
1410 | ret = -EINVAL; | |
1411 | goto err; | |
1412 | } | |
1413 | ||
1414 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1415 | user_wr->num_sge * sizeof (struct ib_sge), | |
1416 | GFP_KERNEL); | |
1417 | if (!next) { | |
1418 | ret = -ENOMEM; | |
1419 | goto err; | |
1420 | } | |
1421 | ||
1422 | if (!last) | |
1423 | wr = next; | |
1424 | else | |
1425 | last->next = next; | |
1426 | last = next; | |
1427 | ||
1428 | next->next = NULL; | |
1429 | next->wr_id = user_wr->wr_id; | |
1430 | next->num_sge = user_wr->num_sge; | |
1431 | ||
1432 | if (next->num_sge) { | |
1433 | next->sg_list = (void *) next + | |
1434 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1435 | if (copy_from_user(next->sg_list, | |
1436 | buf + wr_count * wqe_size + | |
1437 | sg_ind * sizeof (struct ib_sge), | |
1438 | next->num_sge * sizeof (struct ib_sge))) { | |
1439 | ret = -EFAULT; | |
1440 | goto err; | |
1441 | } | |
1442 | sg_ind += next->num_sge; | |
1443 | } else | |
1444 | next->sg_list = NULL; | |
1445 | } | |
1446 | ||
1447 | kfree(user_wr); | |
1448 | return wr; | |
1449 | ||
1450 | err: | |
1451 | kfree(user_wr); | |
1452 | ||
1453 | while (wr) { | |
1454 | next = wr->next; | |
1455 | kfree(wr); | |
1456 | wr = next; | |
1457 | } | |
1458 | ||
1459 | return ERR_PTR(ret); | |
1460 | } | |
1461 | ||
1462 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1463 | const char __user *buf, int in_len, |
1464 | int out_len) | |
67cdb40c RD |
1465 | { |
1466 | struct ib_uverbs_post_recv cmd; | |
1467 | struct ib_uverbs_post_recv_resp resp; | |
1468 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1469 | struct ib_qp *qp; | |
1470 | ssize_t ret = -EINVAL; | |
1471 | ||
1472 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1473 | return -EFAULT; | |
1474 | ||
1475 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1476 | in_len - sizeof cmd, cmd.wr_count, | |
1477 | cmd.sge_count, cmd.wqe_size); | |
1478 | if (IS_ERR(wr)) | |
1479 | return PTR_ERR(wr); | |
1480 | ||
95ed644f | 1481 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1482 | |
1483 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
1484 | if (!qp || qp->uobject->context != file->ucontext) | |
1485 | goto out; | |
1486 | ||
1487 | resp.bad_wr = 0; | |
1488 | ret = qp->device->post_recv(qp, wr, &bad_wr); | |
1489 | if (ret) | |
1490 | for (next = wr; next; next = next->next) { | |
1491 | ++resp.bad_wr; | |
1492 | if (next == bad_wr) | |
1493 | break; | |
1494 | } | |
1495 | ||
1496 | ||
1497 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1498 | &resp, sizeof resp)) | |
1499 | ret = -EFAULT; | |
1500 | ||
1501 | out: | |
95ed644f | 1502 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1503 | |
1504 | while (wr) { | |
1505 | next = wr->next; | |
1506 | kfree(wr); | |
1507 | wr = next; | |
1508 | } | |
1509 | ||
1510 | return ret ? ret : in_len; | |
1511 | } | |
1512 | ||
1513 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1514 | const char __user *buf, int in_len, |
1515 | int out_len) | |
67cdb40c RD |
1516 | { |
1517 | struct ib_uverbs_post_srq_recv cmd; | |
1518 | struct ib_uverbs_post_srq_recv_resp resp; | |
1519 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1520 | struct ib_srq *srq; | |
1521 | ssize_t ret = -EINVAL; | |
1522 | ||
1523 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1524 | return -EFAULT; | |
1525 | ||
1526 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1527 | in_len - sizeof cmd, cmd.wr_count, | |
1528 | cmd.sge_count, cmd.wqe_size); | |
1529 | if (IS_ERR(wr)) | |
1530 | return PTR_ERR(wr); | |
1531 | ||
95ed644f | 1532 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1533 | |
1534 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1535 | if (!srq || srq->uobject->context != file->ucontext) | |
1536 | goto out; | |
1537 | ||
1538 | resp.bad_wr = 0; | |
1539 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
1540 | if (ret) | |
1541 | for (next = wr; next; next = next->next) { | |
1542 | ++resp.bad_wr; | |
1543 | if (next == bad_wr) | |
1544 | break; | |
1545 | } | |
1546 | ||
1547 | ||
1548 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1549 | &resp, sizeof resp)) | |
1550 | ret = -EFAULT; | |
1551 | ||
1552 | out: | |
95ed644f | 1553 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1554 | |
1555 | while (wr) { | |
1556 | next = wr->next; | |
1557 | kfree(wr); | |
1558 | wr = next; | |
1559 | } | |
1560 | ||
1561 | return ret ? ret : in_len; | |
1562 | } | |
1563 | ||
1564 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
1565 | const char __user *buf, int in_len, | |
1566 | int out_len) | |
1567 | { | |
1568 | struct ib_uverbs_create_ah cmd; | |
1569 | struct ib_uverbs_create_ah_resp resp; | |
1570 | struct ib_uobject *uobj; | |
1571 | struct ib_pd *pd; | |
1572 | struct ib_ah *ah; | |
1573 | struct ib_ah_attr attr; | |
1574 | int ret; | |
1575 | ||
1576 | if (out_len < sizeof resp) | |
1577 | return -ENOSPC; | |
1578 | ||
1579 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1580 | return -EFAULT; | |
1581 | ||
1582 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1583 | if (!uobj) | |
1584 | return -ENOMEM; | |
1585 | ||
95ed644f | 1586 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1587 | |
1588 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
1589 | if (!pd || pd->uobject->context != file->ucontext) { | |
1590 | ret = -EINVAL; | |
1591 | goto err_up; | |
1592 | } | |
1593 | ||
1594 | uobj->user_handle = cmd.user_handle; | |
1595 | uobj->context = file->ucontext; | |
1596 | ||
1597 | attr.dlid = cmd.attr.dlid; | |
1598 | attr.sl = cmd.attr.sl; | |
1599 | attr.src_path_bits = cmd.attr.src_path_bits; | |
1600 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 1601 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
1602 | attr.port_num = cmd.attr.port_num; |
1603 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
1604 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
1605 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
1606 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
1607 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
1608 | ||
1609 | ah = ib_create_ah(pd, &attr); | |
1610 | if (IS_ERR(ah)) { | |
1611 | ret = PTR_ERR(ah); | |
1612 | goto err_up; | |
1613 | } | |
1614 | ||
1615 | ah->uobject = uobj; | |
1616 | ||
1617 | retry: | |
1618 | if (!idr_pre_get(&ib_uverbs_ah_idr, GFP_KERNEL)) { | |
1619 | ret = -ENOMEM; | |
1620 | goto err_destroy; | |
1621 | } | |
1622 | ||
1623 | ret = idr_get_new(&ib_uverbs_ah_idr, ah, &uobj->id); | |
1624 | ||
1625 | if (ret == -EAGAIN) | |
1626 | goto retry; | |
1627 | if (ret) | |
1628 | goto err_destroy; | |
1629 | ||
1630 | resp.ah_handle = uobj->id; | |
1631 | ||
1632 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1633 | &resp, sizeof resp)) { | |
1634 | ret = -EFAULT; | |
1635 | goto err_idr; | |
1636 | } | |
1637 | ||
95ed644f | 1638 | mutex_lock(&file->mutex); |
67cdb40c | 1639 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 1640 | mutex_unlock(&file->mutex); |
67cdb40c | 1641 | |
95ed644f | 1642 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1643 | |
1644 | return in_len; | |
1645 | ||
1646 | err_idr: | |
1647 | idr_remove(&ib_uverbs_ah_idr, uobj->id); | |
1648 | ||
1649 | err_destroy: | |
1650 | ib_destroy_ah(ah); | |
1651 | ||
1652 | err_up: | |
95ed644f | 1653 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1654 | |
1655 | kfree(uobj); | |
1656 | return ret; | |
1657 | } | |
1658 | ||
1659 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
1660 | const char __user *buf, int in_len, int out_len) | |
1661 | { | |
1662 | struct ib_uverbs_destroy_ah cmd; | |
1663 | struct ib_ah *ah; | |
1664 | struct ib_uobject *uobj; | |
1665 | int ret = -EINVAL; | |
1666 | ||
1667 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1668 | return -EFAULT; | |
1669 | ||
95ed644f | 1670 | mutex_lock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1671 | |
1672 | ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle); | |
1673 | if (!ah || ah->uobject->context != file->ucontext) | |
1674 | goto out; | |
1675 | ||
1676 | uobj = ah->uobject; | |
1677 | ||
1678 | ret = ib_destroy_ah(ah); | |
1679 | if (ret) | |
1680 | goto out; | |
1681 | ||
1682 | idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle); | |
1683 | ||
95ed644f | 1684 | mutex_lock(&file->mutex); |
67cdb40c | 1685 | list_del(&uobj->list); |
95ed644f | 1686 | mutex_unlock(&file->mutex); |
67cdb40c RD |
1687 | |
1688 | kfree(uobj); | |
1689 | ||
1690 | out: | |
95ed644f | 1691 | mutex_unlock(&ib_uverbs_idr_mutex); |
67cdb40c RD |
1692 | |
1693 | return ret ? ret : in_len; | |
1694 | } | |
1695 | ||
bc38a6ab RD |
1696 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
1697 | const char __user *buf, int in_len, | |
1698 | int out_len) | |
1699 | { | |
1700 | struct ib_uverbs_attach_mcast cmd; | |
1701 | struct ib_qp *qp; | |
f4e40156 JM |
1702 | struct ib_uqp_object *uobj; |
1703 | struct ib_uverbs_mcast_entry *mcast; | |
bc38a6ab RD |
1704 | int ret = -EINVAL; |
1705 | ||
1706 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1707 | return -EFAULT; | |
1708 | ||
95ed644f | 1709 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1710 | |
1711 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
f4e40156 JM |
1712 | if (!qp || qp->uobject->context != file->ucontext) |
1713 | goto out; | |
1714 | ||
1715 | uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); | |
1716 | ||
1717 | list_for_each_entry(mcast, &uobj->mcast_list, list) | |
1718 | if (cmd.mlid == mcast->lid && | |
1719 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1720 | ret = 0; | |
1721 | goto out; | |
1722 | } | |
1723 | ||
1724 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
1725 | if (!mcast) { | |
1726 | ret = -ENOMEM; | |
1727 | goto out; | |
1728 | } | |
1729 | ||
1730 | mcast->lid = cmd.mlid; | |
1731 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 1732 | |
f4e40156 JM |
1733 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
1734 | if (!ret) { | |
1735 | uobj = container_of(qp->uobject, struct ib_uqp_object, | |
1736 | uevent.uobject); | |
1737 | list_add_tail(&mcast->list, &uobj->mcast_list); | |
1738 | } else | |
1739 | kfree(mcast); | |
1740 | ||
1741 | out: | |
95ed644f | 1742 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1743 | |
1744 | return ret ? ret : in_len; | |
1745 | } | |
1746 | ||
1747 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
1748 | const char __user *buf, int in_len, | |
1749 | int out_len) | |
1750 | { | |
1751 | struct ib_uverbs_detach_mcast cmd; | |
f4e40156 | 1752 | struct ib_uqp_object *uobj; |
bc38a6ab | 1753 | struct ib_qp *qp; |
f4e40156 | 1754 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
1755 | int ret = -EINVAL; |
1756 | ||
1757 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1758 | return -EFAULT; | |
1759 | ||
95ed644f | 1760 | mutex_lock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1761 | |
1762 | qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle); | |
f4e40156 JM |
1763 | if (!qp || qp->uobject->context != file->ucontext) |
1764 | goto out; | |
bc38a6ab | 1765 | |
f4e40156 JM |
1766 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
1767 | if (ret) | |
1768 | goto out; | |
1769 | ||
1770 | uobj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); | |
1771 | ||
1772 | list_for_each_entry(mcast, &uobj->mcast_list, list) | |
1773 | if (cmd.mlid == mcast->lid && | |
1774 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1775 | list_del(&mcast->list); | |
1776 | kfree(mcast); | |
1777 | break; | |
1778 | } | |
1779 | ||
1780 | out: | |
95ed644f | 1781 | mutex_unlock(&ib_uverbs_idr_mutex); |
bc38a6ab RD |
1782 | |
1783 | return ret ? ret : in_len; | |
1784 | } | |
f520ba5a RD |
1785 | |
1786 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, | |
1787 | const char __user *buf, int in_len, | |
1788 | int out_len) | |
1789 | { | |
1790 | struct ib_uverbs_create_srq cmd; | |
1791 | struct ib_uverbs_create_srq_resp resp; | |
1792 | struct ib_udata udata; | |
63aaf647 | 1793 | struct ib_uevent_object *uobj; |
f520ba5a RD |
1794 | struct ib_pd *pd; |
1795 | struct ib_srq *srq; | |
1796 | struct ib_srq_init_attr attr; | |
1797 | int ret; | |
1798 | ||
1799 | if (out_len < sizeof resp) | |
1800 | return -ENOSPC; | |
1801 | ||
1802 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1803 | return -EFAULT; | |
1804 | ||
1805 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1806 | (unsigned long) cmd.response + sizeof resp, | |
1807 | in_len - sizeof cmd, out_len - sizeof resp); | |
1808 | ||
1809 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1810 | if (!uobj) | |
1811 | return -ENOMEM; | |
1812 | ||
95ed644f | 1813 | mutex_lock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1814 | |
1815 | pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle); | |
1816 | ||
1817 | if (!pd || pd->uobject->context != file->ucontext) { | |
1818 | ret = -EINVAL; | |
1819 | goto err_up; | |
1820 | } | |
1821 | ||
1822 | attr.event_handler = ib_uverbs_srq_event_handler; | |
1823 | attr.srq_context = file; | |
1824 | attr.attr.max_wr = cmd.max_wr; | |
1825 | attr.attr.max_sge = cmd.max_sge; | |
1826 | attr.attr.srq_limit = cmd.srq_limit; | |
1827 | ||
63aaf647 RD |
1828 | uobj->uobject.user_handle = cmd.user_handle; |
1829 | uobj->uobject.context = file->ucontext; | |
1830 | uobj->events_reported = 0; | |
1831 | INIT_LIST_HEAD(&uobj->event_list); | |
f520ba5a RD |
1832 | |
1833 | srq = pd->device->create_srq(pd, &attr, &udata); | |
1834 | if (IS_ERR(srq)) { | |
1835 | ret = PTR_ERR(srq); | |
1836 | goto err_up; | |
1837 | } | |
1838 | ||
1839 | srq->device = pd->device; | |
1840 | srq->pd = pd; | |
63aaf647 | 1841 | srq->uobject = &uobj->uobject; |
f520ba5a RD |
1842 | srq->event_handler = attr.event_handler; |
1843 | srq->srq_context = attr.srq_context; | |
1844 | atomic_inc(&pd->usecnt); | |
1845 | atomic_set(&srq->usecnt, 0); | |
1846 | ||
1847 | memset(&resp, 0, sizeof resp); | |
1848 | ||
1849 | retry: | |
1850 | if (!idr_pre_get(&ib_uverbs_srq_idr, GFP_KERNEL)) { | |
1851 | ret = -ENOMEM; | |
1852 | goto err_destroy; | |
1853 | } | |
1854 | ||
63aaf647 | 1855 | ret = idr_get_new(&ib_uverbs_srq_idr, srq, &uobj->uobject.id); |
f520ba5a RD |
1856 | |
1857 | if (ret == -EAGAIN) | |
1858 | goto retry; | |
1859 | if (ret) | |
1860 | goto err_destroy; | |
1861 | ||
63aaf647 | 1862 | resp.srq_handle = uobj->uobject.id; |
ea88fd16 DB |
1863 | resp.max_wr = attr.attr.max_wr; |
1864 | resp.max_sge = attr.attr.max_sge; | |
f520ba5a | 1865 | |
f520ba5a RD |
1866 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1867 | &resp, sizeof resp)) { | |
1868 | ret = -EFAULT; | |
eb9d3cd5 | 1869 | goto err_idr; |
f520ba5a RD |
1870 | } |
1871 | ||
95ed644f | 1872 | mutex_lock(&file->mutex); |
eb9d3cd5 | 1873 | list_add_tail(&uobj->uobject.list, &file->ucontext->srq_list); |
95ed644f | 1874 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1875 | |
95ed644f | 1876 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1877 | |
1878 | return in_len; | |
1879 | ||
eb9d3cd5 RD |
1880 | err_idr: |
1881 | idr_remove(&ib_uverbs_srq_idr, uobj->uobject.id); | |
f520ba5a RD |
1882 | |
1883 | err_destroy: | |
1884 | ib_destroy_srq(srq); | |
1885 | ||
1886 | err_up: | |
95ed644f | 1887 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1888 | |
1889 | kfree(uobj); | |
1890 | return ret; | |
1891 | } | |
1892 | ||
1893 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, | |
1894 | const char __user *buf, int in_len, | |
1895 | int out_len) | |
1896 | { | |
1897 | struct ib_uverbs_modify_srq cmd; | |
1898 | struct ib_srq *srq; | |
1899 | struct ib_srq_attr attr; | |
1900 | int ret; | |
1901 | ||
1902 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1903 | return -EFAULT; | |
1904 | ||
95ed644f | 1905 | mutex_lock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1906 | |
1907 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1908 | if (!srq || srq->uobject->context != file->ucontext) { | |
1909 | ret = -EINVAL; | |
1910 | goto out; | |
1911 | } | |
1912 | ||
1913 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
1914 | attr.srq_limit = cmd.srq_limit; |
1915 | ||
1916 | ret = ib_modify_srq(srq, &attr, cmd.attr_mask); | |
1917 | ||
1918 | out: | |
95ed644f | 1919 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
1920 | |
1921 | return ret ? ret : in_len; | |
1922 | } | |
1923 | ||
8bdb0e86 DB |
1924 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
1925 | const char __user *buf, | |
1926 | int in_len, int out_len) | |
1927 | { | |
1928 | struct ib_uverbs_query_srq cmd; | |
1929 | struct ib_uverbs_query_srq_resp resp; | |
1930 | struct ib_srq_attr attr; | |
1931 | struct ib_srq *srq; | |
1932 | int ret; | |
1933 | ||
1934 | if (out_len < sizeof resp) | |
1935 | return -ENOSPC; | |
1936 | ||
1937 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1938 | return -EFAULT; | |
1939 | ||
1940 | mutex_lock(&ib_uverbs_idr_mutex); | |
1941 | ||
1942 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1943 | if (srq && srq->uobject->context == file->ucontext) | |
1944 | ret = ib_query_srq(srq, &attr); | |
1945 | else | |
1946 | ret = -EINVAL; | |
1947 | ||
1948 | mutex_unlock(&ib_uverbs_idr_mutex); | |
1949 | ||
1950 | if (ret) | |
1951 | goto out; | |
1952 | ||
1953 | memset(&resp, 0, sizeof resp); | |
1954 | ||
1955 | resp.max_wr = attr.max_wr; | |
1956 | resp.max_sge = attr.max_sge; | |
1957 | resp.srq_limit = attr.srq_limit; | |
1958 | ||
1959 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1960 | &resp, sizeof resp)) | |
1961 | ret = -EFAULT; | |
1962 | ||
1963 | out: | |
1964 | return ret ? ret : in_len; | |
1965 | } | |
1966 | ||
f520ba5a RD |
1967 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
1968 | const char __user *buf, int in_len, | |
1969 | int out_len) | |
1970 | { | |
63aaf647 RD |
1971 | struct ib_uverbs_destroy_srq cmd; |
1972 | struct ib_uverbs_destroy_srq_resp resp; | |
1973 | struct ib_srq *srq; | |
1974 | struct ib_uevent_object *uobj; | |
63aaf647 | 1975 | int ret = -EINVAL; |
f520ba5a RD |
1976 | |
1977 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1978 | return -EFAULT; | |
1979 | ||
95ed644f | 1980 | mutex_lock(&ib_uverbs_idr_mutex); |
f520ba5a | 1981 | |
63aaf647 RD |
1982 | memset(&resp, 0, sizeof resp); |
1983 | ||
f520ba5a RD |
1984 | srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle); |
1985 | if (!srq || srq->uobject->context != file->ucontext) | |
1986 | goto out; | |
1987 | ||
63aaf647 | 1988 | uobj = container_of(srq->uobject, struct ib_uevent_object, uobject); |
f520ba5a RD |
1989 | |
1990 | ret = ib_destroy_srq(srq); | |
1991 | if (ret) | |
1992 | goto out; | |
1993 | ||
1994 | idr_remove(&ib_uverbs_srq_idr, cmd.srq_handle); | |
1995 | ||
95ed644f | 1996 | mutex_lock(&file->mutex); |
63aaf647 | 1997 | list_del(&uobj->uobject.list); |
95ed644f | 1998 | mutex_unlock(&file->mutex); |
f520ba5a | 1999 | |
70a30e16 | 2000 | ib_uverbs_release_uevent(file, uobj); |
63aaf647 RD |
2001 | |
2002 | resp.events_reported = uobj->events_reported; | |
2003 | ||
f520ba5a RD |
2004 | kfree(uobj); |
2005 | ||
63aaf647 RD |
2006 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2007 | &resp, sizeof resp)) | |
2008 | ret = -EFAULT; | |
2009 | ||
f520ba5a | 2010 | out: |
95ed644f | 2011 | mutex_unlock(&ib_uverbs_idr_mutex); |
f520ba5a RD |
2012 | |
2013 | return ret ? ret : in_len; | |
2014 | } |