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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 | ||
9ead190b RD |
53 | /* |
54 | * The ib_uobject locking scheme is as follows: | |
55 | * | |
56 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it | |
57 | * needs to be held during all idr operations. When an object is | |
58 | * looked up, a reference must be taken on the object's kref before | |
59 | * dropping this lock. | |
60 | * | |
61 | * - Each object also has an rwsem. This rwsem must be held for | |
62 | * reading while an operation that uses the object is performed. | |
63 | * For example, while registering an MR, the associated PD's | |
64 | * uobject.mutex must be held for reading. The rwsem must be held | |
65 | * for writing while initializing or destroying an object. | |
66 | * | |
67 | * - In addition, each object has a "live" flag. If this flag is not | |
68 | * set, then lookups of the object will fail even if it is found in | |
69 | * the idr. This handles a reader that blocks and does not acquire | |
70 | * the rwsem until after the object is destroyed. The destroy | |
71 | * operation will set the live flag to 0 and then drop the rwsem; | |
72 | * this will allow the reader to acquire the rwsem, see that the | |
73 | * live flag is 0, and then drop the rwsem and its reference to | |
74 | * object. The underlying storage will not be freed until the last | |
75 | * reference to the object is dropped. | |
76 | */ | |
77 | ||
78 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, | |
79 | struct ib_ucontext *context) | |
80 | { | |
81 | uobj->user_handle = user_handle; | |
82 | uobj->context = context; | |
83 | kref_init(&uobj->ref); | |
84 | init_rwsem(&uobj->mutex); | |
85 | uobj->live = 0; | |
86 | } | |
87 | ||
88 | static void release_uobj(struct kref *kref) | |
89 | { | |
90 | kfree(container_of(kref, struct ib_uobject, ref)); | |
91 | } | |
92 | ||
93 | static void put_uobj(struct ib_uobject *uobj) | |
94 | { | |
95 | kref_put(&uobj->ref, release_uobj); | |
96 | } | |
97 | ||
98 | static void put_uobj_read(struct ib_uobject *uobj) | |
99 | { | |
100 | up_read(&uobj->mutex); | |
101 | put_uobj(uobj); | |
102 | } | |
103 | ||
104 | static void put_uobj_write(struct ib_uobject *uobj) | |
105 | { | |
106 | up_write(&uobj->mutex); | |
107 | put_uobj(uobj); | |
108 | } | |
109 | ||
110 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) | |
3463175d RD |
111 | { |
112 | int ret; | |
113 | ||
114 | retry: | |
115 | if (!idr_pre_get(idr, GFP_KERNEL)) | |
116 | return -ENOMEM; | |
117 | ||
9ead190b | 118 | spin_lock(&ib_uverbs_idr_lock); |
3463175d | 119 | ret = idr_get_new(idr, uobj, &uobj->id); |
9ead190b | 120 | spin_unlock(&ib_uverbs_idr_lock); |
3463175d RD |
121 | |
122 | if (ret == -EAGAIN) | |
123 | goto retry; | |
124 | ||
125 | return ret; | |
126 | } | |
127 | ||
9ead190b RD |
128 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
129 | { | |
130 | spin_lock(&ib_uverbs_idr_lock); | |
131 | idr_remove(idr, uobj->id); | |
132 | spin_unlock(&ib_uverbs_idr_lock); | |
133 | } | |
134 | ||
135 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, | |
136 | struct ib_ucontext *context) | |
137 | { | |
138 | struct ib_uobject *uobj; | |
139 | ||
140 | spin_lock(&ib_uverbs_idr_lock); | |
141 | uobj = idr_find(idr, id); | |
142 | if (uobj) | |
143 | kref_get(&uobj->ref); | |
144 | spin_unlock(&ib_uverbs_idr_lock); | |
145 | ||
146 | return uobj; | |
147 | } | |
148 | ||
149 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, | |
150 | struct ib_ucontext *context) | |
151 | { | |
152 | struct ib_uobject *uobj; | |
153 | ||
154 | uobj = __idr_get_uobj(idr, id, context); | |
155 | if (!uobj) | |
156 | return NULL; | |
157 | ||
158 | down_read(&uobj->mutex); | |
159 | if (!uobj->live) { | |
160 | put_uobj_read(uobj); | |
161 | return NULL; | |
162 | } | |
163 | ||
164 | return uobj; | |
165 | } | |
166 | ||
167 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, | |
168 | struct ib_ucontext *context) | |
169 | { | |
170 | struct ib_uobject *uobj; | |
171 | ||
172 | uobj = __idr_get_uobj(idr, id, context); | |
173 | if (!uobj) | |
174 | return NULL; | |
175 | ||
176 | down_write(&uobj->mutex); | |
177 | if (!uobj->live) { | |
178 | put_uobj_write(uobj); | |
179 | return NULL; | |
180 | } | |
181 | ||
182 | return uobj; | |
183 | } | |
184 | ||
185 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context) | |
186 | { | |
187 | struct ib_uobject *uobj; | |
188 | ||
189 | uobj = idr_read_uobj(idr, id, context); | |
190 | return uobj ? uobj->object : NULL; | |
191 | } | |
192 | ||
193 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) | |
194 | { | |
195 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context); | |
196 | } | |
197 | ||
198 | static void put_pd_read(struct ib_pd *pd) | |
199 | { | |
200 | put_uobj_read(pd->uobject); | |
201 | } | |
202 | ||
203 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context) | |
204 | { | |
205 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context); | |
206 | } | |
207 | ||
208 | static void put_cq_read(struct ib_cq *cq) | |
209 | { | |
210 | put_uobj_read(cq->uobject); | |
211 | } | |
212 | ||
213 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) | |
214 | { | |
215 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context); | |
216 | } | |
217 | ||
218 | static void put_ah_read(struct ib_ah *ah) | |
219 | { | |
220 | put_uobj_read(ah->uobject); | |
221 | } | |
222 | ||
223 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) | |
224 | { | |
225 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context); | |
226 | } | |
227 | ||
228 | static void put_qp_read(struct ib_qp *qp) | |
229 | { | |
230 | put_uobj_read(qp->uobject); | |
231 | } | |
232 | ||
233 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) | |
234 | { | |
235 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context); | |
236 | } | |
237 | ||
238 | static void put_srq_read(struct ib_srq *srq) | |
239 | { | |
240 | put_uobj_read(srq->uobject); | |
241 | } | |
242 | ||
bc38a6ab RD |
243 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
244 | const char __user *buf, | |
245 | int in_len, int out_len) | |
246 | { | |
247 | struct ib_uverbs_get_context cmd; | |
248 | struct ib_uverbs_get_context_resp resp; | |
249 | struct ib_udata udata; | |
250 | struct ib_device *ibdev = file->device->ib_dev; | |
63c47c28 | 251 | struct ib_ucontext *ucontext; |
6b73597e | 252 | struct file *filp; |
63c47c28 | 253 | int ret; |
bc38a6ab RD |
254 | |
255 | if (out_len < sizeof resp) | |
256 | return -ENOSPC; | |
257 | ||
258 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
259 | return -EFAULT; | |
260 | ||
95ed644f | 261 | mutex_lock(&file->mutex); |
63c47c28 RD |
262 | |
263 | if (file->ucontext) { | |
264 | ret = -EINVAL; | |
265 | goto err; | |
266 | } | |
267 | ||
bc38a6ab RD |
268 | INIT_UDATA(&udata, buf + sizeof cmd, |
269 | (unsigned long) cmd.response + sizeof resp, | |
270 | in_len - sizeof cmd, out_len - sizeof resp); | |
271 | ||
63c47c28 | 272 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
77f76013 GC |
273 | if (IS_ERR(ucontext)) { |
274 | ret = PTR_ERR(file->ucontext); | |
275 | goto err; | |
276 | } | |
bc38a6ab | 277 | |
63c47c28 RD |
278 | ucontext->device = ibdev; |
279 | INIT_LIST_HEAD(&ucontext->pd_list); | |
280 | INIT_LIST_HEAD(&ucontext->mr_list); | |
281 | INIT_LIST_HEAD(&ucontext->mw_list); | |
282 | INIT_LIST_HEAD(&ucontext->cq_list); | |
283 | INIT_LIST_HEAD(&ucontext->qp_list); | |
284 | INIT_LIST_HEAD(&ucontext->srq_list); | |
285 | INIT_LIST_HEAD(&ucontext->ah_list); | |
bc38a6ab | 286 | |
6b73597e RD |
287 | resp.num_comp_vectors = file->device->num_comp_vectors; |
288 | ||
289 | filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd); | |
290 | if (IS_ERR(filp)) { | |
291 | ret = PTR_ERR(filp); | |
292 | goto err_free; | |
293 | } | |
bc38a6ab RD |
294 | |
295 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
296 | &resp, sizeof resp)) { |
297 | ret = -EFAULT; | |
6b73597e | 298 | goto err_file; |
63c47c28 RD |
299 | } |
300 | ||
6b73597e RD |
301 | file->async_file = filp->private_data; |
302 | ||
303 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
304 | ib_uverbs_event_handler); | |
305 | ret = ib_register_event_handler(&file->event_handler); | |
306 | if (ret) | |
307 | goto err_file; | |
308 | ||
309 | kref_get(&file->async_file->ref); | |
310 | kref_get(&file->ref); | |
70a30e16 | 311 | file->ucontext = ucontext; |
6b73597e RD |
312 | |
313 | fd_install(resp.async_fd, filp); | |
314 | ||
95ed644f | 315 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
316 | |
317 | return in_len; | |
318 | ||
6b73597e RD |
319 | err_file: |
320 | put_unused_fd(resp.async_fd); | |
321 | fput(filp); | |
322 | ||
63c47c28 RD |
323 | err_free: |
324 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 325 | |
63c47c28 | 326 | err: |
95ed644f | 327 | mutex_unlock(&file->mutex); |
63c47c28 | 328 | return ret; |
bc38a6ab RD |
329 | } |
330 | ||
331 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
332 | const char __user *buf, | |
333 | int in_len, int out_len) | |
334 | { | |
335 | struct ib_uverbs_query_device cmd; | |
336 | struct ib_uverbs_query_device_resp resp; | |
337 | struct ib_device_attr attr; | |
338 | int ret; | |
339 | ||
340 | if (out_len < sizeof resp) | |
341 | return -ENOSPC; | |
342 | ||
343 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
344 | return -EFAULT; | |
345 | ||
346 | ret = ib_query_device(file->device->ib_dev, &attr); | |
347 | if (ret) | |
348 | return ret; | |
349 | ||
350 | memset(&resp, 0, sizeof resp); | |
351 | ||
352 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 353 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
354 | resp.sys_image_guid = attr.sys_image_guid; |
355 | resp.max_mr_size = attr.max_mr_size; | |
356 | resp.page_size_cap = attr.page_size_cap; | |
357 | resp.vendor_id = attr.vendor_id; | |
358 | resp.vendor_part_id = attr.vendor_part_id; | |
359 | resp.hw_ver = attr.hw_ver; | |
360 | resp.max_qp = attr.max_qp; | |
361 | resp.max_qp_wr = attr.max_qp_wr; | |
362 | resp.device_cap_flags = attr.device_cap_flags; | |
363 | resp.max_sge = attr.max_sge; | |
364 | resp.max_sge_rd = attr.max_sge_rd; | |
365 | resp.max_cq = attr.max_cq; | |
366 | resp.max_cqe = attr.max_cqe; | |
367 | resp.max_mr = attr.max_mr; | |
368 | resp.max_pd = attr.max_pd; | |
369 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
370 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
371 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
372 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
373 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
374 | resp.atomic_cap = attr.atomic_cap; | |
375 | resp.max_ee = attr.max_ee; | |
376 | resp.max_rdd = attr.max_rdd; | |
377 | resp.max_mw = attr.max_mw; | |
378 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
379 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
380 | resp.max_mcast_grp = attr.max_mcast_grp; | |
381 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
382 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
383 | resp.max_ah = attr.max_ah; | |
384 | resp.max_fmr = attr.max_fmr; | |
385 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
386 | resp.max_srq = attr.max_srq; | |
387 | resp.max_srq_wr = attr.max_srq_wr; | |
388 | resp.max_srq_sge = attr.max_srq_sge; | |
389 | resp.max_pkeys = attr.max_pkeys; | |
390 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
391 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
392 | ||
393 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
394 | &resp, sizeof resp)) | |
395 | return -EFAULT; | |
396 | ||
397 | return in_len; | |
398 | } | |
399 | ||
400 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
401 | const char __user *buf, | |
402 | int in_len, int out_len) | |
403 | { | |
404 | struct ib_uverbs_query_port cmd; | |
405 | struct ib_uverbs_query_port_resp resp; | |
406 | struct ib_port_attr attr; | |
407 | int ret; | |
408 | ||
409 | if (out_len < sizeof resp) | |
410 | return -ENOSPC; | |
411 | ||
412 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
413 | return -EFAULT; | |
414 | ||
415 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
416 | if (ret) | |
417 | return ret; | |
418 | ||
419 | memset(&resp, 0, sizeof resp); | |
420 | ||
421 | resp.state = attr.state; | |
422 | resp.max_mtu = attr.max_mtu; | |
423 | resp.active_mtu = attr.active_mtu; | |
424 | resp.gid_tbl_len = attr.gid_tbl_len; | |
425 | resp.port_cap_flags = attr.port_cap_flags; | |
426 | resp.max_msg_sz = attr.max_msg_sz; | |
427 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
428 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
429 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
430 | resp.lid = attr.lid; | |
431 | resp.sm_lid = attr.sm_lid; | |
432 | resp.lmc = attr.lmc; | |
433 | resp.max_vl_num = attr.max_vl_num; | |
434 | resp.sm_sl = attr.sm_sl; | |
435 | resp.subnet_timeout = attr.subnet_timeout; | |
436 | resp.init_type_reply = attr.init_type_reply; | |
437 | resp.active_width = attr.active_width; | |
438 | resp.active_speed = attr.active_speed; | |
439 | resp.phys_state = attr.phys_state; | |
440 | ||
441 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
442 | &resp, sizeof resp)) | |
443 | return -EFAULT; | |
444 | ||
445 | return in_len; | |
446 | } | |
447 | ||
bc38a6ab RD |
448 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
449 | const char __user *buf, | |
450 | int in_len, int out_len) | |
451 | { | |
452 | struct ib_uverbs_alloc_pd cmd; | |
453 | struct ib_uverbs_alloc_pd_resp resp; | |
454 | struct ib_udata udata; | |
455 | struct ib_uobject *uobj; | |
456 | struct ib_pd *pd; | |
457 | int ret; | |
458 | ||
459 | if (out_len < sizeof resp) | |
460 | return -ENOSPC; | |
461 | ||
462 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
463 | return -EFAULT; | |
464 | ||
465 | INIT_UDATA(&udata, buf + sizeof cmd, | |
466 | (unsigned long) cmd.response + sizeof resp, | |
467 | in_len - sizeof cmd, out_len - sizeof resp); | |
468 | ||
469 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
470 | if (!uobj) | |
471 | return -ENOMEM; | |
472 | ||
9ead190b RD |
473 | init_uobj(uobj, 0, file->ucontext); |
474 | down_write(&uobj->mutex); | |
bc38a6ab RD |
475 | |
476 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
477 | file->ucontext, &udata); | |
478 | if (IS_ERR(pd)) { | |
479 | ret = PTR_ERR(pd); | |
480 | goto err; | |
481 | } | |
482 | ||
483 | pd->device = file->device->ib_dev; | |
484 | pd->uobject = uobj; | |
485 | atomic_set(&pd->usecnt, 0); | |
486 | ||
9ead190b RD |
487 | uobj->object = pd; |
488 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 489 | if (ret) |
9ead190b | 490 | goto err_idr; |
bc38a6ab RD |
491 | |
492 | memset(&resp, 0, sizeof resp); | |
493 | resp.pd_handle = uobj->id; | |
494 | ||
495 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
496 | &resp, sizeof resp)) { | |
497 | ret = -EFAULT; | |
9ead190b | 498 | goto err_copy; |
bc38a6ab RD |
499 | } |
500 | ||
95ed644f | 501 | mutex_lock(&file->mutex); |
eb9d3cd5 | 502 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 503 | mutex_unlock(&file->mutex); |
bc38a6ab | 504 | |
9ead190b RD |
505 | uobj->live = 1; |
506 | ||
507 | up_write(&uobj->mutex); | |
bc38a6ab | 508 | |
eb9d3cd5 RD |
509 | return in_len; |
510 | ||
9ead190b RD |
511 | err_copy: |
512 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 513 | |
9ead190b | 514 | err_idr: |
bc38a6ab RD |
515 | ib_dealloc_pd(pd); |
516 | ||
517 | err: | |
9ead190b | 518 | put_uobj_write(uobj); |
bc38a6ab RD |
519 | return ret; |
520 | } | |
521 | ||
522 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
523 | const char __user *buf, | |
524 | int in_len, int out_len) | |
525 | { | |
526 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 527 | struct ib_uobject *uobj; |
9ead190b | 528 | int ret; |
bc38a6ab RD |
529 | |
530 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
531 | return -EFAULT; | |
532 | ||
9ead190b RD |
533 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
534 | if (!uobj) | |
535 | return -EINVAL; | |
bc38a6ab | 536 | |
9ead190b RD |
537 | ret = ib_dealloc_pd(uobj->object); |
538 | if (!ret) | |
539 | uobj->live = 0; | |
bc38a6ab | 540 | |
9ead190b | 541 | put_uobj_write(uobj); |
bc38a6ab | 542 | |
bc38a6ab | 543 | if (ret) |
9ead190b | 544 | return ret; |
bc38a6ab | 545 | |
9ead190b | 546 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 547 | |
95ed644f | 548 | mutex_lock(&file->mutex); |
bc38a6ab | 549 | list_del(&uobj->list); |
95ed644f | 550 | mutex_unlock(&file->mutex); |
bc38a6ab | 551 | |
9ead190b | 552 | put_uobj(uobj); |
bc38a6ab | 553 | |
9ead190b | 554 | return in_len; |
bc38a6ab RD |
555 | } |
556 | ||
557 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, | |
558 | const char __user *buf, int in_len, | |
559 | int out_len) | |
560 | { | |
561 | struct ib_uverbs_reg_mr cmd; | |
562 | struct ib_uverbs_reg_mr_resp resp; | |
563 | struct ib_udata udata; | |
564 | struct ib_umem_object *obj; | |
565 | struct ib_pd *pd; | |
566 | struct ib_mr *mr; | |
567 | int ret; | |
568 | ||
569 | if (out_len < sizeof resp) | |
570 | return -ENOSPC; | |
571 | ||
572 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
573 | return -EFAULT; | |
574 | ||
575 | INIT_UDATA(&udata, buf + sizeof cmd, | |
576 | (unsigned long) cmd.response + sizeof resp, | |
577 | in_len - sizeof cmd, out_len - sizeof resp); | |
578 | ||
579 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
580 | return -EINVAL; | |
581 | ||
f575394f RD |
582 | /* |
583 | * Local write permission is required if remote write or | |
584 | * remote atomic permission is also requested. | |
585 | */ | |
586 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
587 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) | |
588 | return -EINVAL; | |
589 | ||
bc38a6ab RD |
590 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
591 | if (!obj) | |
592 | return -ENOMEM; | |
593 | ||
9ead190b RD |
594 | init_uobj(&obj->uobject, 0, file->ucontext); |
595 | down_write(&obj->uobject.mutex); | |
bc38a6ab RD |
596 | |
597 | /* | |
598 | * We ask for writable memory if any access flags other than | |
599 | * "remote read" are set. "Local write" and "remote write" | |
600 | * obviously require write access. "Remote atomic" can do | |
601 | * things like fetch and add, which will modify memory, and | |
602 | * "MW bind" can change permissions by binding a window. | |
603 | */ | |
604 | ret = ib_umem_get(file->device->ib_dev, &obj->umem, | |
605 | (void *) (unsigned long) cmd.start, cmd.length, | |
606 | !!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ)); | |
607 | if (ret) | |
608 | goto err_free; | |
609 | ||
610 | obj->umem.virt_base = cmd.hca_va; | |
611 | ||
9ead190b RD |
612 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
613 | if (!pd) | |
614 | goto err_release; | |
bc38a6ab RD |
615 | |
616 | mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata); | |
617 | if (IS_ERR(mr)) { | |
618 | ret = PTR_ERR(mr); | |
9ead190b | 619 | goto err_put; |
bc38a6ab RD |
620 | } |
621 | ||
622 | mr->device = pd->device; | |
623 | mr->pd = pd; | |
624 | mr->uobject = &obj->uobject; | |
625 | atomic_inc(&pd->usecnt); | |
626 | atomic_set(&mr->usecnt, 0); | |
627 | ||
9ead190b RD |
628 | obj->uobject.object = mr; |
629 | ret = idr_add_uobj(&ib_uverbs_mr_idr, &obj->uobject); | |
bc38a6ab RD |
630 | if (ret) |
631 | goto err_unreg; | |
632 | ||
9ead190b RD |
633 | memset(&resp, 0, sizeof resp); |
634 | resp.lkey = mr->lkey; | |
635 | resp.rkey = mr->rkey; | |
bc38a6ab RD |
636 | resp.mr_handle = obj->uobject.id; |
637 | ||
bc38a6ab RD |
638 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
639 | &resp, sizeof resp)) { | |
640 | ret = -EFAULT; | |
9ead190b | 641 | goto err_copy; |
bc38a6ab RD |
642 | } |
643 | ||
9ead190b RD |
644 | put_pd_read(pd); |
645 | ||
95ed644f | 646 | mutex_lock(&file->mutex); |
eb9d3cd5 | 647 | list_add_tail(&obj->uobject.list, &file->ucontext->mr_list); |
95ed644f | 648 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 649 | |
9ead190b RD |
650 | obj->uobject.live = 1; |
651 | ||
652 | up_write(&obj->uobject.mutex); | |
bc38a6ab RD |
653 | |
654 | return in_len; | |
655 | ||
9ead190b RD |
656 | err_copy: |
657 | idr_remove_uobj(&ib_uverbs_mr_idr, &obj->uobject); | |
bc38a6ab RD |
658 | |
659 | err_unreg: | |
660 | ib_dereg_mr(mr); | |
661 | ||
9ead190b RD |
662 | err_put: |
663 | put_pd_read(pd); | |
bc38a6ab | 664 | |
9ead190b | 665 | err_release: |
bc38a6ab RD |
666 | ib_umem_release(file->device->ib_dev, &obj->umem); |
667 | ||
668 | err_free: | |
9ead190b | 669 | put_uobj_write(&obj->uobject); |
bc38a6ab RD |
670 | return ret; |
671 | } | |
672 | ||
673 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
674 | const char __user *buf, int in_len, | |
675 | int out_len) | |
676 | { | |
677 | struct ib_uverbs_dereg_mr cmd; | |
678 | struct ib_mr *mr; | |
9ead190b | 679 | struct ib_uobject *uobj; |
bc38a6ab RD |
680 | struct ib_umem_object *memobj; |
681 | int ret = -EINVAL; | |
682 | ||
683 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
684 | return -EFAULT; | |
685 | ||
9ead190b RD |
686 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
687 | if (!uobj) | |
688 | return -EINVAL; | |
bc38a6ab | 689 | |
9ead190b RD |
690 | memobj = container_of(uobj, struct ib_umem_object, uobject); |
691 | mr = uobj->object; | |
bc38a6ab RD |
692 | |
693 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
694 | if (!ret) |
695 | uobj->live = 0; | |
696 | ||
697 | put_uobj_write(uobj); | |
698 | ||
bc38a6ab | 699 | if (ret) |
9ead190b | 700 | return ret; |
bc38a6ab | 701 | |
9ead190b | 702 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 703 | |
95ed644f | 704 | mutex_lock(&file->mutex); |
9ead190b | 705 | list_del(&uobj->list); |
95ed644f | 706 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
707 | |
708 | ib_umem_release(file->device->ib_dev, &memobj->umem); | |
bc38a6ab | 709 | |
9ead190b | 710 | put_uobj(uobj); |
bc38a6ab | 711 | |
9ead190b | 712 | return in_len; |
bc38a6ab RD |
713 | } |
714 | ||
6b73597e RD |
715 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
716 | const char __user *buf, int in_len, | |
717 | int out_len) | |
718 | { | |
719 | struct ib_uverbs_create_comp_channel cmd; | |
720 | struct ib_uverbs_create_comp_channel_resp resp; | |
721 | struct file *filp; | |
722 | ||
723 | if (out_len < sizeof resp) | |
724 | return -ENOSPC; | |
725 | ||
726 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
727 | return -EFAULT; | |
728 | ||
729 | filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd); | |
730 | if (IS_ERR(filp)) | |
731 | return PTR_ERR(filp); | |
732 | ||
733 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
734 | &resp, sizeof resp)) { | |
735 | put_unused_fd(resp.fd); | |
736 | fput(filp); | |
737 | return -EFAULT; | |
738 | } | |
739 | ||
740 | fd_install(resp.fd, filp); | |
741 | return in_len; | |
742 | } | |
743 | ||
bc38a6ab RD |
744 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
745 | const char __user *buf, int in_len, | |
746 | int out_len) | |
747 | { | |
748 | struct ib_uverbs_create_cq cmd; | |
749 | struct ib_uverbs_create_cq_resp resp; | |
750 | struct ib_udata udata; | |
9ead190b | 751 | struct ib_ucq_object *obj; |
6b73597e | 752 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
753 | struct ib_cq *cq; |
754 | int ret; | |
755 | ||
756 | if (out_len < sizeof resp) | |
757 | return -ENOSPC; | |
758 | ||
759 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
760 | return -EFAULT; | |
761 | ||
762 | INIT_UDATA(&udata, buf + sizeof cmd, | |
763 | (unsigned long) cmd.response + sizeof resp, | |
764 | in_len - sizeof cmd, out_len - sizeof resp); | |
765 | ||
6b73597e | 766 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
bc38a6ab RD |
767 | return -EINVAL; |
768 | ||
9ead190b RD |
769 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
770 | if (!obj) | |
bc38a6ab RD |
771 | return -ENOMEM; |
772 | ||
9ead190b RD |
773 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext); |
774 | down_write(&obj->uobject.mutex); | |
775 | ||
ac4e7b35 JM |
776 | if (cmd.comp_channel >= 0) { |
777 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); | |
778 | if (!ev_file) { | |
779 | ret = -EINVAL; | |
780 | goto err; | |
781 | } | |
782 | } | |
783 | ||
9ead190b RD |
784 | obj->uverbs_file = file; |
785 | obj->comp_events_reported = 0; | |
786 | obj->async_events_reported = 0; | |
787 | INIT_LIST_HEAD(&obj->comp_list); | |
788 | INIT_LIST_HEAD(&obj->async_list); | |
bc38a6ab RD |
789 | |
790 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, | |
791 | file->ucontext, &udata); | |
792 | if (IS_ERR(cq)) { | |
793 | ret = PTR_ERR(cq); | |
9ead190b | 794 | goto err_file; |
bc38a6ab RD |
795 | } |
796 | ||
797 | cq->device = file->device->ib_dev; | |
9ead190b | 798 | cq->uobject = &obj->uobject; |
bc38a6ab RD |
799 | cq->comp_handler = ib_uverbs_comp_handler; |
800 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 801 | cq->cq_context = ev_file; |
bc38a6ab RD |
802 | atomic_set(&cq->usecnt, 0); |
803 | ||
9ead190b RD |
804 | obj->uobject.object = cq; |
805 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
bc38a6ab | 806 | if (ret) |
9ead190b | 807 | goto err_free; |
bc38a6ab RD |
808 | |
809 | memset(&resp, 0, sizeof resp); | |
9ead190b | 810 | resp.cq_handle = obj->uobject.id; |
bc38a6ab RD |
811 | resp.cqe = cq->cqe; |
812 | ||
813 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
814 | &resp, sizeof resp)) { | |
815 | ret = -EFAULT; | |
9ead190b | 816 | goto err_copy; |
bc38a6ab RD |
817 | } |
818 | ||
95ed644f | 819 | mutex_lock(&file->mutex); |
9ead190b | 820 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 821 | mutex_unlock(&file->mutex); |
bc38a6ab | 822 | |
9ead190b RD |
823 | obj->uobject.live = 1; |
824 | ||
825 | up_write(&obj->uobject.mutex); | |
bc38a6ab | 826 | |
eb9d3cd5 RD |
827 | return in_len; |
828 | ||
9ead190b RD |
829 | err_copy: |
830 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
eb9d3cd5 | 831 | |
9ead190b RD |
832 | |
833 | err_free: | |
bc38a6ab RD |
834 | ib_destroy_cq(cq); |
835 | ||
9ead190b | 836 | err_file: |
ac4e7b35 | 837 | if (ev_file) |
9ead190b RD |
838 | ib_uverbs_release_ucq(file, ev_file, obj); |
839 | ||
840 | err: | |
841 | put_uobj_write(&obj->uobject); | |
bc38a6ab RD |
842 | return ret; |
843 | } | |
844 | ||
33b9b3ee RD |
845 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
846 | const char __user *buf, int in_len, | |
847 | int out_len) | |
848 | { | |
849 | struct ib_uverbs_resize_cq cmd; | |
850 | struct ib_uverbs_resize_cq_resp resp; | |
851 | struct ib_udata udata; | |
852 | struct ib_cq *cq; | |
853 | int ret = -EINVAL; | |
854 | ||
855 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
856 | return -EFAULT; | |
857 | ||
858 | INIT_UDATA(&udata, buf + sizeof cmd, | |
859 | (unsigned long) cmd.response + sizeof resp, | |
860 | in_len - sizeof cmd, out_len - sizeof resp); | |
861 | ||
9ead190b RD |
862 | cq = idr_read_cq(cmd.cq_handle, file->ucontext); |
863 | if (!cq) | |
864 | return -EINVAL; | |
33b9b3ee RD |
865 | |
866 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
867 | if (ret) | |
868 | goto out; | |
869 | ||
870 | memset(&resp, 0, sizeof resp); | |
871 | resp.cqe = cq->cqe; | |
872 | ||
873 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
874 | &resp, sizeof resp)) | |
875 | ret = -EFAULT; | |
876 | ||
877 | out: | |
9ead190b | 878 | put_cq_read(cq); |
33b9b3ee RD |
879 | |
880 | return ret ? ret : in_len; | |
881 | } | |
882 | ||
67cdb40c RD |
883 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
884 | const char __user *buf, int in_len, | |
885 | int out_len) | |
886 | { | |
887 | struct ib_uverbs_poll_cq cmd; | |
888 | struct ib_uverbs_poll_cq_resp *resp; | |
9ead190b | 889 | struct ib_uobject *uobj; |
67cdb40c RD |
890 | struct ib_cq *cq; |
891 | struct ib_wc *wc; | |
892 | int ret = 0; | |
893 | int i; | |
894 | int rsize; | |
895 | ||
896 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
897 | return -EFAULT; | |
898 | ||
899 | wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL); | |
900 | if (!wc) | |
901 | return -ENOMEM; | |
902 | ||
903 | rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc); | |
904 | resp = kmalloc(rsize, GFP_KERNEL); | |
905 | if (!resp) { | |
906 | ret = -ENOMEM; | |
907 | goto out_wc; | |
908 | } | |
909 | ||
9ead190b RD |
910 | uobj = idr_read_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
911 | if (!uobj) { | |
67cdb40c RD |
912 | ret = -EINVAL; |
913 | goto out; | |
914 | } | |
9ead190b | 915 | cq = uobj->object; |
67cdb40c RD |
916 | |
917 | resp->count = ib_poll_cq(cq, cmd.ne, wc); | |
918 | ||
9ead190b RD |
919 | put_uobj_read(uobj); |
920 | ||
67cdb40c RD |
921 | for (i = 0; i < resp->count; i++) { |
922 | resp->wc[i].wr_id = wc[i].wr_id; | |
923 | resp->wc[i].status = wc[i].status; | |
924 | resp->wc[i].opcode = wc[i].opcode; | |
925 | resp->wc[i].vendor_err = wc[i].vendor_err; | |
926 | resp->wc[i].byte_len = wc[i].byte_len; | |
77369ed3 | 927 | resp->wc[i].imm_data = (__u32 __force) wc[i].imm_data; |
67cdb40c RD |
928 | resp->wc[i].qp_num = wc[i].qp_num; |
929 | resp->wc[i].src_qp = wc[i].src_qp; | |
930 | resp->wc[i].wc_flags = wc[i].wc_flags; | |
931 | resp->wc[i].pkey_index = wc[i].pkey_index; | |
932 | resp->wc[i].slid = wc[i].slid; | |
933 | resp->wc[i].sl = wc[i].sl; | |
934 | resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits; | |
935 | resp->wc[i].port_num = wc[i].port_num; | |
936 | } | |
937 | ||
938 | if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize)) | |
939 | ret = -EFAULT; | |
940 | ||
941 | out: | |
67cdb40c RD |
942 | kfree(resp); |
943 | ||
944 | out_wc: | |
945 | kfree(wc); | |
946 | return ret ? ret : in_len; | |
947 | } | |
948 | ||
949 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
950 | const char __user *buf, int in_len, | |
951 | int out_len) | |
952 | { | |
953 | struct ib_uverbs_req_notify_cq cmd; | |
9ead190b | 954 | struct ib_uobject *uobj; |
67cdb40c | 955 | struct ib_cq *cq; |
67cdb40c RD |
956 | |
957 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
958 | return -EFAULT; | |
959 | ||
9ead190b RD |
960 | uobj = idr_read_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
961 | if (!uobj) | |
962 | return -EINVAL; | |
963 | cq = uobj->object; | |
67cdb40c | 964 | |
9ead190b RD |
965 | ib_req_notify_cq(cq, cmd.solicited_only ? |
966 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
967 | ||
968 | put_uobj_read(uobj); | |
969 | ||
970 | return in_len; | |
67cdb40c RD |
971 | } |
972 | ||
bc38a6ab RD |
973 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
974 | const char __user *buf, int in_len, | |
975 | int out_len) | |
976 | { | |
63aaf647 RD |
977 | struct ib_uverbs_destroy_cq cmd; |
978 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 979 | struct ib_uobject *uobj; |
63aaf647 | 980 | struct ib_cq *cq; |
9ead190b | 981 | struct ib_ucq_object *obj; |
6b73597e | 982 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 983 | int ret = -EINVAL; |
bc38a6ab RD |
984 | |
985 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
986 | return -EFAULT; | |
987 | ||
9ead190b RD |
988 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
989 | if (!uobj) | |
990 | return -EINVAL; | |
991 | cq = uobj->object; | |
992 | ev_file = cq->cq_context; | |
993 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 994 | |
9ead190b RD |
995 | ret = ib_destroy_cq(cq); |
996 | if (!ret) | |
997 | uobj->live = 0; | |
bc38a6ab | 998 | |
9ead190b | 999 | put_uobj_write(uobj); |
bc38a6ab | 1000 | |
bc38a6ab | 1001 | if (ret) |
9ead190b | 1002 | return ret; |
bc38a6ab | 1003 | |
9ead190b | 1004 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 1005 | |
95ed644f | 1006 | mutex_lock(&file->mutex); |
9ead190b | 1007 | list_del(&uobj->list); |
95ed644f | 1008 | mutex_unlock(&file->mutex); |
bc38a6ab | 1009 | |
9ead190b | 1010 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1011 | |
9ead190b RD |
1012 | memset(&resp, 0, sizeof resp); |
1013 | resp.comp_events_reported = obj->comp_events_reported; | |
1014 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1015 | |
9ead190b | 1016 | put_uobj(uobj); |
bc38a6ab | 1017 | |
63aaf647 RD |
1018 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1019 | &resp, sizeof resp)) | |
9ead190b | 1020 | return -EFAULT; |
bc38a6ab | 1021 | |
9ead190b | 1022 | return in_len; |
bc38a6ab RD |
1023 | } |
1024 | ||
1025 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
1026 | const char __user *buf, int in_len, | |
1027 | int out_len) | |
1028 | { | |
1029 | struct ib_uverbs_create_qp cmd; | |
1030 | struct ib_uverbs_create_qp_resp resp; | |
1031 | struct ib_udata udata; | |
9ead190b | 1032 | struct ib_uqp_object *obj; |
bc38a6ab RD |
1033 | struct ib_pd *pd; |
1034 | struct ib_cq *scq, *rcq; | |
f520ba5a | 1035 | struct ib_srq *srq; |
bc38a6ab RD |
1036 | struct ib_qp *qp; |
1037 | struct ib_qp_init_attr attr; | |
1038 | int ret; | |
1039 | ||
1040 | if (out_len < sizeof resp) | |
1041 | return -ENOSPC; | |
1042 | ||
1043 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1044 | return -EFAULT; | |
1045 | ||
1046 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1047 | (unsigned long) cmd.response + sizeof resp, | |
1048 | in_len - sizeof cmd, out_len - sizeof resp); | |
1049 | ||
9ead190b RD |
1050 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1051 | if (!obj) | |
bc38a6ab RD |
1052 | return -ENOMEM; |
1053 | ||
9ead190b RD |
1054 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext); |
1055 | down_write(&obj->uevent.uobject.mutex); | |
bc38a6ab | 1056 | |
9ead190b RD |
1057 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1058 | scq = idr_read_cq(cmd.send_cq_handle, file->ucontext); | |
1059 | rcq = idr_read_cq(cmd.recv_cq_handle, file->ucontext); | |
1060 | srq = cmd.is_srq ? idr_read_srq(cmd.srq_handle, file->ucontext) : NULL; | |
bc38a6ab | 1061 | |
9ead190b | 1062 | if (!pd || !scq || !rcq || (cmd.is_srq && !srq)) { |
bc38a6ab | 1063 | ret = -EINVAL; |
9ead190b | 1064 | goto err_put; |
bc38a6ab RD |
1065 | } |
1066 | ||
1067 | attr.event_handler = ib_uverbs_qp_event_handler; | |
1068 | attr.qp_context = file; | |
1069 | attr.send_cq = scq; | |
1070 | attr.recv_cq = rcq; | |
f520ba5a | 1071 | attr.srq = srq; |
bc38a6ab RD |
1072 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
1073 | attr.qp_type = cmd.qp_type; | |
1074 | ||
1075 | attr.cap.max_send_wr = cmd.max_send_wr; | |
1076 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
1077 | attr.cap.max_send_sge = cmd.max_send_sge; | |
1078 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
1079 | attr.cap.max_inline_data = cmd.max_inline_data; | |
1080 | ||
9ead190b RD |
1081 | obj->uevent.events_reported = 0; |
1082 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1083 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab RD |
1084 | |
1085 | qp = pd->device->create_qp(pd, &attr, &udata); | |
1086 | if (IS_ERR(qp)) { | |
1087 | ret = PTR_ERR(qp); | |
9ead190b | 1088 | goto err_put; |
bc38a6ab RD |
1089 | } |
1090 | ||
1091 | qp->device = pd->device; | |
1092 | qp->pd = pd; | |
1093 | qp->send_cq = attr.send_cq; | |
1094 | qp->recv_cq = attr.recv_cq; | |
1095 | qp->srq = attr.srq; | |
9ead190b | 1096 | qp->uobject = &obj->uevent.uobject; |
bc38a6ab RD |
1097 | qp->event_handler = attr.event_handler; |
1098 | qp->qp_context = attr.qp_context; | |
1099 | qp->qp_type = attr.qp_type; | |
1100 | atomic_inc(&pd->usecnt); | |
1101 | atomic_inc(&attr.send_cq->usecnt); | |
1102 | atomic_inc(&attr.recv_cq->usecnt); | |
1103 | if (attr.srq) | |
1104 | atomic_inc(&attr.srq->usecnt); | |
1105 | ||
9ead190b RD |
1106 | obj->uevent.uobject.object = qp; |
1107 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1108 | if (ret) |
1109 | goto err_destroy; | |
1110 | ||
9ead190b RD |
1111 | memset(&resp, 0, sizeof resp); |
1112 | resp.qpn = qp->qp_num; | |
1113 | resp.qp_handle = obj->uevent.uobject.id; | |
77369ed3 JM |
1114 | resp.max_recv_sge = attr.cap.max_recv_sge; |
1115 | resp.max_send_sge = attr.cap.max_send_sge; | |
1116 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
1117 | resp.max_send_wr = attr.cap.max_send_wr; | |
1118 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1119 | |
bc38a6ab RD |
1120 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1121 | &resp, sizeof resp)) { | |
1122 | ret = -EFAULT; | |
9ead190b | 1123 | goto err_copy; |
bc38a6ab RD |
1124 | } |
1125 | ||
9ead190b RD |
1126 | put_pd_read(pd); |
1127 | put_cq_read(scq); | |
1128 | put_cq_read(rcq); | |
1129 | if (srq) | |
1130 | put_srq_read(srq); | |
1131 | ||
95ed644f | 1132 | mutex_lock(&file->mutex); |
9ead190b | 1133 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1134 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1135 | |
9ead190b RD |
1136 | obj->uevent.uobject.live = 1; |
1137 | ||
1138 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab RD |
1139 | |
1140 | return in_len; | |
1141 | ||
9ead190b RD |
1142 | err_copy: |
1143 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1144 | |
1145 | err_destroy: | |
1146 | ib_destroy_qp(qp); | |
1147 | ||
9ead190b RD |
1148 | err_put: |
1149 | if (pd) | |
1150 | put_pd_read(pd); | |
1151 | if (scq) | |
1152 | put_cq_read(scq); | |
1153 | if (rcq) | |
1154 | put_cq_read(rcq); | |
1155 | if (srq) | |
1156 | put_srq_read(srq); | |
1157 | ||
1158 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
1159 | return ret; |
1160 | } | |
1161 | ||
7ccc9a24 DB |
1162 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
1163 | const char __user *buf, int in_len, | |
1164 | int out_len) | |
1165 | { | |
1166 | struct ib_uverbs_query_qp cmd; | |
1167 | struct ib_uverbs_query_qp_resp resp; | |
1168 | struct ib_qp *qp; | |
1169 | struct ib_qp_attr *attr; | |
1170 | struct ib_qp_init_attr *init_attr; | |
1171 | int ret; | |
1172 | ||
1173 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1174 | return -EFAULT; | |
1175 | ||
1176 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1177 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
1178 | if (!attr || !init_attr) { | |
1179 | ret = -ENOMEM; | |
1180 | goto out; | |
1181 | } | |
1182 | ||
9ead190b RD |
1183 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1184 | if (!qp) { | |
7ccc9a24 | 1185 | ret = -EINVAL; |
9ead190b RD |
1186 | goto out; |
1187 | } | |
1188 | ||
1189 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 1190 | |
9ead190b | 1191 | put_qp_read(qp); |
7ccc9a24 DB |
1192 | |
1193 | if (ret) | |
1194 | goto out; | |
1195 | ||
1196 | memset(&resp, 0, sizeof resp); | |
1197 | ||
1198 | resp.qp_state = attr->qp_state; | |
1199 | resp.cur_qp_state = attr->cur_qp_state; | |
1200 | resp.path_mtu = attr->path_mtu; | |
1201 | resp.path_mig_state = attr->path_mig_state; | |
1202 | resp.qkey = attr->qkey; | |
1203 | resp.rq_psn = attr->rq_psn; | |
1204 | resp.sq_psn = attr->sq_psn; | |
1205 | resp.dest_qp_num = attr->dest_qp_num; | |
1206 | resp.qp_access_flags = attr->qp_access_flags; | |
1207 | resp.pkey_index = attr->pkey_index; | |
1208 | resp.alt_pkey_index = attr->alt_pkey_index; | |
1209 | resp.en_sqd_async_notify = attr->en_sqd_async_notify; | |
1210 | resp.max_rd_atomic = attr->max_rd_atomic; | |
1211 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1212 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1213 | resp.port_num = attr->port_num; | |
1214 | resp.timeout = attr->timeout; | |
1215 | resp.retry_cnt = attr->retry_cnt; | |
1216 | resp.rnr_retry = attr->rnr_retry; | |
1217 | resp.alt_port_num = attr->alt_port_num; | |
1218 | resp.alt_timeout = attr->alt_timeout; | |
1219 | ||
1220 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1221 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1222 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1223 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1224 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1225 | resp.dest.dlid = attr->ah_attr.dlid; | |
1226 | resp.dest.sl = attr->ah_attr.sl; | |
1227 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1228 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1229 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1230 | resp.dest.port_num = attr->ah_attr.port_num; | |
1231 | ||
1232 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1233 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1234 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1235 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1236 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1237 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1238 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1239 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1240 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1241 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1242 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1243 | ||
1244 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1245 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1246 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1247 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1248 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1249 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1250 | |
1251 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1252 | &resp, sizeof resp)) | |
1253 | ret = -EFAULT; | |
1254 | ||
1255 | out: | |
1256 | kfree(attr); | |
1257 | kfree(init_attr); | |
1258 | ||
1259 | return ret ? ret : in_len; | |
1260 | } | |
1261 | ||
bc38a6ab RD |
1262 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1263 | const char __user *buf, int in_len, | |
1264 | int out_len) | |
1265 | { | |
1266 | struct ib_uverbs_modify_qp cmd; | |
1267 | struct ib_qp *qp; | |
1268 | struct ib_qp_attr *attr; | |
1269 | int ret; | |
1270 | ||
1271 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1272 | return -EFAULT; | |
1273 | ||
1274 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1275 | if (!attr) | |
1276 | return -ENOMEM; | |
1277 | ||
9ead190b RD |
1278 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1279 | if (!qp) { | |
bc38a6ab RD |
1280 | ret = -EINVAL; |
1281 | goto out; | |
1282 | } | |
1283 | ||
1284 | attr->qp_state = cmd.qp_state; | |
1285 | attr->cur_qp_state = cmd.cur_qp_state; | |
1286 | attr->path_mtu = cmd.path_mtu; | |
1287 | attr->path_mig_state = cmd.path_mig_state; | |
1288 | attr->qkey = cmd.qkey; | |
1289 | attr->rq_psn = cmd.rq_psn; | |
1290 | attr->sq_psn = cmd.sq_psn; | |
1291 | attr->dest_qp_num = cmd.dest_qp_num; | |
1292 | attr->qp_access_flags = cmd.qp_access_flags; | |
1293 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1294 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1295 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1296 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1297 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1298 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1299 | attr->port_num = cmd.port_num; | |
1300 | attr->timeout = cmd.timeout; | |
1301 | attr->retry_cnt = cmd.retry_cnt; | |
1302 | attr->rnr_retry = cmd.rnr_retry; | |
1303 | attr->alt_port_num = cmd.alt_port_num; | |
1304 | attr->alt_timeout = cmd.alt_timeout; | |
1305 | ||
1306 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1307 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1308 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1309 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1310 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1311 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1312 | attr->ah_attr.sl = cmd.dest.sl; | |
1313 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1314 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1315 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1316 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1317 | ||
1318 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1319 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1320 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1321 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1322 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1323 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1324 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1325 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1326 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1327 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1328 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1329 | ||
1330 | ret = ib_modify_qp(qp, attr, cmd.attr_mask); | |
9ead190b RD |
1331 | |
1332 | put_qp_read(qp); | |
1333 | ||
bc38a6ab RD |
1334 | if (ret) |
1335 | goto out; | |
1336 | ||
1337 | ret = in_len; | |
1338 | ||
1339 | out: | |
bc38a6ab RD |
1340 | kfree(attr); |
1341 | ||
1342 | return ret; | |
1343 | } | |
1344 | ||
1345 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1346 | const char __user *buf, int in_len, | |
1347 | int out_len) | |
1348 | { | |
63aaf647 RD |
1349 | struct ib_uverbs_destroy_qp cmd; |
1350 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 1351 | struct ib_uobject *uobj; |
63aaf647 | 1352 | struct ib_qp *qp; |
9ead190b | 1353 | struct ib_uqp_object *obj; |
63aaf647 | 1354 | int ret = -EINVAL; |
bc38a6ab RD |
1355 | |
1356 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1357 | return -EFAULT; | |
1358 | ||
63aaf647 RD |
1359 | memset(&resp, 0, sizeof resp); |
1360 | ||
9ead190b RD |
1361 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
1362 | if (!uobj) | |
1363 | return -EINVAL; | |
1364 | qp = uobj->object; | |
1365 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 1366 | |
9ead190b RD |
1367 | if (!list_empty(&obj->mcast_list)) { |
1368 | put_uobj_write(uobj); | |
1369 | return -EBUSY; | |
f4e40156 | 1370 | } |
bc38a6ab RD |
1371 | |
1372 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
1373 | if (!ret) |
1374 | uobj->live = 0; | |
1375 | ||
1376 | put_uobj_write(uobj); | |
1377 | ||
bc38a6ab | 1378 | if (ret) |
9ead190b | 1379 | return ret; |
bc38a6ab | 1380 | |
9ead190b | 1381 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 1382 | |
95ed644f | 1383 | mutex_lock(&file->mutex); |
9ead190b | 1384 | list_del(&uobj->list); |
95ed644f | 1385 | mutex_unlock(&file->mutex); |
bc38a6ab | 1386 | |
9ead190b | 1387 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 1388 | |
9ead190b | 1389 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 1390 | |
9ead190b | 1391 | put_uobj(uobj); |
bc38a6ab | 1392 | |
63aaf647 RD |
1393 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1394 | &resp, sizeof resp)) | |
9ead190b | 1395 | return -EFAULT; |
bc38a6ab | 1396 | |
9ead190b | 1397 | return in_len; |
bc38a6ab RD |
1398 | } |
1399 | ||
67cdb40c | 1400 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
1401 | const char __user *buf, int in_len, |
1402 | int out_len) | |
67cdb40c RD |
1403 | { |
1404 | struct ib_uverbs_post_send cmd; | |
1405 | struct ib_uverbs_post_send_resp resp; | |
1406 | struct ib_uverbs_send_wr *user_wr; | |
1407 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
1408 | struct ib_qp *qp; | |
1409 | int i, sg_ind; | |
9ead190b | 1410 | int is_ud; |
67cdb40c RD |
1411 | ssize_t ret = -EINVAL; |
1412 | ||
1413 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1414 | return -EFAULT; | |
1415 | ||
1416 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
1417 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
1418 | return -EINVAL; | |
1419 | ||
1420 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
1421 | return -EINVAL; | |
1422 | ||
1423 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
1424 | if (!user_wr) | |
1425 | return -ENOMEM; | |
1426 | ||
9ead190b RD |
1427 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1428 | if (!qp) | |
67cdb40c RD |
1429 | goto out; |
1430 | ||
9ead190b | 1431 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
1432 | sg_ind = 0; |
1433 | last = NULL; | |
1434 | for (i = 0; i < cmd.wr_count; ++i) { | |
1435 | if (copy_from_user(user_wr, | |
1436 | buf + sizeof cmd + i * cmd.wqe_size, | |
1437 | cmd.wqe_size)) { | |
1438 | ret = -EFAULT; | |
9ead190b | 1439 | goto out_put; |
67cdb40c RD |
1440 | } |
1441 | ||
1442 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
1443 | ret = -EINVAL; | |
9ead190b | 1444 | goto out_put; |
67cdb40c RD |
1445 | } |
1446 | ||
1447 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1448 | user_wr->num_sge * sizeof (struct ib_sge), | |
1449 | GFP_KERNEL); | |
1450 | if (!next) { | |
1451 | ret = -ENOMEM; | |
9ead190b | 1452 | goto out_put; |
67cdb40c RD |
1453 | } |
1454 | ||
1455 | if (!last) | |
1456 | wr = next; | |
1457 | else | |
1458 | last->next = next; | |
1459 | last = next; | |
1460 | ||
1461 | next->next = NULL; | |
1462 | next->wr_id = user_wr->wr_id; | |
1463 | next->num_sge = user_wr->num_sge; | |
1464 | next->opcode = user_wr->opcode; | |
1465 | next->send_flags = user_wr->send_flags; | |
77369ed3 | 1466 | next->imm_data = (__be32 __force) user_wr->imm_data; |
67cdb40c | 1467 | |
9ead190b RD |
1468 | if (is_ud) { |
1469 | next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, | |
1470 | file->ucontext); | |
67cdb40c RD |
1471 | if (!next->wr.ud.ah) { |
1472 | ret = -EINVAL; | |
9ead190b | 1473 | goto out_put; |
67cdb40c RD |
1474 | } |
1475 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
1476 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
1477 | } else { | |
1478 | switch (next->opcode) { | |
1479 | case IB_WR_RDMA_WRITE: | |
1480 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
1481 | case IB_WR_RDMA_READ: | |
1482 | next->wr.rdma.remote_addr = | |
1483 | user_wr->wr.rdma.remote_addr; | |
1484 | next->wr.rdma.rkey = | |
1485 | user_wr->wr.rdma.rkey; | |
1486 | break; | |
1487 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
1488 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
1489 | next->wr.atomic.remote_addr = | |
1490 | user_wr->wr.atomic.remote_addr; | |
1491 | next->wr.atomic.compare_add = | |
1492 | user_wr->wr.atomic.compare_add; | |
1493 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
1494 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
1495 | break; | |
1496 | default: | |
1497 | break; | |
1498 | } | |
1499 | } | |
1500 | ||
1501 | if (next->num_sge) { | |
1502 | next->sg_list = (void *) next + | |
1503 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1504 | if (copy_from_user(next->sg_list, | |
1505 | buf + sizeof cmd + | |
1506 | cmd.wr_count * cmd.wqe_size + | |
1507 | sg_ind * sizeof (struct ib_sge), | |
1508 | next->num_sge * sizeof (struct ib_sge))) { | |
1509 | ret = -EFAULT; | |
9ead190b | 1510 | goto out_put; |
67cdb40c RD |
1511 | } |
1512 | sg_ind += next->num_sge; | |
1513 | } else | |
1514 | next->sg_list = NULL; | |
1515 | } | |
1516 | ||
1517 | resp.bad_wr = 0; | |
1518 | ret = qp->device->post_send(qp, wr, &bad_wr); | |
1519 | if (ret) | |
1520 | for (next = wr; next; next = next->next) { | |
1521 | ++resp.bad_wr; | |
1522 | if (next == bad_wr) | |
1523 | break; | |
1524 | } | |
1525 | ||
1526 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1527 | &resp, sizeof resp)) | |
1528 | ret = -EFAULT; | |
1529 | ||
9ead190b RD |
1530 | out_put: |
1531 | put_qp_read(qp); | |
67cdb40c RD |
1532 | |
1533 | while (wr) { | |
9ead190b RD |
1534 | if (is_ud && wr->wr.ud.ah) |
1535 | put_ah_read(wr->wr.ud.ah); | |
67cdb40c RD |
1536 | next = wr->next; |
1537 | kfree(wr); | |
1538 | wr = next; | |
1539 | } | |
1540 | ||
18320828 | 1541 | out: |
67cdb40c RD |
1542 | kfree(user_wr); |
1543 | ||
1544 | return ret ? ret : in_len; | |
1545 | } | |
1546 | ||
1547 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
1548 | int in_len, | |
1549 | u32 wr_count, | |
1550 | u32 sge_count, | |
1551 | u32 wqe_size) | |
1552 | { | |
1553 | struct ib_uverbs_recv_wr *user_wr; | |
1554 | struct ib_recv_wr *wr = NULL, *last, *next; | |
1555 | int sg_ind; | |
1556 | int i; | |
1557 | int ret; | |
1558 | ||
1559 | if (in_len < wqe_size * wr_count + | |
1560 | sge_count * sizeof (struct ib_uverbs_sge)) | |
1561 | return ERR_PTR(-EINVAL); | |
1562 | ||
1563 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
1564 | return ERR_PTR(-EINVAL); | |
1565 | ||
1566 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
1567 | if (!user_wr) | |
1568 | return ERR_PTR(-ENOMEM); | |
1569 | ||
1570 | sg_ind = 0; | |
1571 | last = NULL; | |
1572 | for (i = 0; i < wr_count; ++i) { | |
1573 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
1574 | wqe_size)) { | |
1575 | ret = -EFAULT; | |
1576 | goto err; | |
1577 | } | |
1578 | ||
1579 | if (user_wr->num_sge + sg_ind > sge_count) { | |
1580 | ret = -EINVAL; | |
1581 | goto err; | |
1582 | } | |
1583 | ||
1584 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1585 | user_wr->num_sge * sizeof (struct ib_sge), | |
1586 | GFP_KERNEL); | |
1587 | if (!next) { | |
1588 | ret = -ENOMEM; | |
1589 | goto err; | |
1590 | } | |
1591 | ||
1592 | if (!last) | |
1593 | wr = next; | |
1594 | else | |
1595 | last->next = next; | |
1596 | last = next; | |
1597 | ||
1598 | next->next = NULL; | |
1599 | next->wr_id = user_wr->wr_id; | |
1600 | next->num_sge = user_wr->num_sge; | |
1601 | ||
1602 | if (next->num_sge) { | |
1603 | next->sg_list = (void *) next + | |
1604 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1605 | if (copy_from_user(next->sg_list, | |
1606 | buf + wr_count * wqe_size + | |
1607 | sg_ind * sizeof (struct ib_sge), | |
1608 | next->num_sge * sizeof (struct ib_sge))) { | |
1609 | ret = -EFAULT; | |
1610 | goto err; | |
1611 | } | |
1612 | sg_ind += next->num_sge; | |
1613 | } else | |
1614 | next->sg_list = NULL; | |
1615 | } | |
1616 | ||
1617 | kfree(user_wr); | |
1618 | return wr; | |
1619 | ||
1620 | err: | |
1621 | kfree(user_wr); | |
1622 | ||
1623 | while (wr) { | |
1624 | next = wr->next; | |
1625 | kfree(wr); | |
1626 | wr = next; | |
1627 | } | |
1628 | ||
1629 | return ERR_PTR(ret); | |
1630 | } | |
1631 | ||
1632 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1633 | const char __user *buf, int in_len, |
1634 | int out_len) | |
67cdb40c RD |
1635 | { |
1636 | struct ib_uverbs_post_recv cmd; | |
1637 | struct ib_uverbs_post_recv_resp resp; | |
1638 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1639 | struct ib_qp *qp; | |
1640 | ssize_t ret = -EINVAL; | |
1641 | ||
1642 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1643 | return -EFAULT; | |
1644 | ||
1645 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1646 | in_len - sizeof cmd, cmd.wr_count, | |
1647 | cmd.sge_count, cmd.wqe_size); | |
1648 | if (IS_ERR(wr)) | |
1649 | return PTR_ERR(wr); | |
1650 | ||
9ead190b RD |
1651 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1652 | if (!qp) | |
67cdb40c RD |
1653 | goto out; |
1654 | ||
1655 | resp.bad_wr = 0; | |
1656 | ret = qp->device->post_recv(qp, wr, &bad_wr); | |
9ead190b RD |
1657 | |
1658 | put_qp_read(qp); | |
1659 | ||
67cdb40c RD |
1660 | if (ret) |
1661 | for (next = wr; next; next = next->next) { | |
1662 | ++resp.bad_wr; | |
1663 | if (next == bad_wr) | |
1664 | break; | |
1665 | } | |
1666 | ||
1667 | ||
1668 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1669 | &resp, sizeof resp)) | |
1670 | ret = -EFAULT; | |
1671 | ||
1672 | out: | |
67cdb40c RD |
1673 | while (wr) { |
1674 | next = wr->next; | |
1675 | kfree(wr); | |
1676 | wr = next; | |
1677 | } | |
1678 | ||
1679 | return ret ? ret : in_len; | |
1680 | } | |
1681 | ||
1682 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1683 | const char __user *buf, int in_len, |
1684 | int out_len) | |
67cdb40c RD |
1685 | { |
1686 | struct ib_uverbs_post_srq_recv cmd; | |
1687 | struct ib_uverbs_post_srq_recv_resp resp; | |
1688 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1689 | struct ib_srq *srq; | |
1690 | ssize_t ret = -EINVAL; | |
1691 | ||
1692 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1693 | return -EFAULT; | |
1694 | ||
1695 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1696 | in_len - sizeof cmd, cmd.wr_count, | |
1697 | cmd.sge_count, cmd.wqe_size); | |
1698 | if (IS_ERR(wr)) | |
1699 | return PTR_ERR(wr); | |
1700 | ||
9ead190b RD |
1701 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
1702 | if (!srq) | |
67cdb40c RD |
1703 | goto out; |
1704 | ||
1705 | resp.bad_wr = 0; | |
1706 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
1707 | |
1708 | put_srq_read(srq); | |
1709 | ||
67cdb40c RD |
1710 | if (ret) |
1711 | for (next = wr; next; next = next->next) { | |
1712 | ++resp.bad_wr; | |
1713 | if (next == bad_wr) | |
1714 | break; | |
1715 | } | |
1716 | ||
1717 | ||
1718 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1719 | &resp, sizeof resp)) | |
1720 | ret = -EFAULT; | |
1721 | ||
1722 | out: | |
67cdb40c RD |
1723 | while (wr) { |
1724 | next = wr->next; | |
1725 | kfree(wr); | |
1726 | wr = next; | |
1727 | } | |
1728 | ||
1729 | return ret ? ret : in_len; | |
1730 | } | |
1731 | ||
1732 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
1733 | const char __user *buf, int in_len, | |
1734 | int out_len) | |
1735 | { | |
1736 | struct ib_uverbs_create_ah cmd; | |
1737 | struct ib_uverbs_create_ah_resp resp; | |
1738 | struct ib_uobject *uobj; | |
1739 | struct ib_pd *pd; | |
1740 | struct ib_ah *ah; | |
1741 | struct ib_ah_attr attr; | |
1742 | int ret; | |
1743 | ||
1744 | if (out_len < sizeof resp) | |
1745 | return -ENOSPC; | |
1746 | ||
1747 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1748 | return -EFAULT; | |
1749 | ||
1750 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1751 | if (!uobj) | |
1752 | return -ENOMEM; | |
1753 | ||
9ead190b RD |
1754 | init_uobj(uobj, cmd.user_handle, file->ucontext); |
1755 | down_write(&uobj->mutex); | |
67cdb40c | 1756 | |
9ead190b RD |
1757 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1758 | if (!pd) { | |
67cdb40c | 1759 | ret = -EINVAL; |
9ead190b | 1760 | goto err; |
67cdb40c RD |
1761 | } |
1762 | ||
67cdb40c RD |
1763 | attr.dlid = cmd.attr.dlid; |
1764 | attr.sl = cmd.attr.sl; | |
1765 | attr.src_path_bits = cmd.attr.src_path_bits; | |
1766 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 1767 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
1768 | attr.port_num = cmd.attr.port_num; |
1769 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
1770 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
1771 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
1772 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
1773 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
1774 | ||
1775 | ah = ib_create_ah(pd, &attr); | |
1776 | if (IS_ERR(ah)) { | |
1777 | ret = PTR_ERR(ah); | |
9ead190b | 1778 | goto err; |
67cdb40c RD |
1779 | } |
1780 | ||
9ead190b RD |
1781 | ah->uobject = uobj; |
1782 | uobj->object = ah; | |
67cdb40c | 1783 | |
9ead190b | 1784 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
1785 | if (ret) |
1786 | goto err_destroy; | |
1787 | ||
1788 | resp.ah_handle = uobj->id; | |
1789 | ||
1790 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1791 | &resp, sizeof resp)) { | |
1792 | ret = -EFAULT; | |
9ead190b | 1793 | goto err_copy; |
67cdb40c RD |
1794 | } |
1795 | ||
9ead190b RD |
1796 | put_pd_read(pd); |
1797 | ||
95ed644f | 1798 | mutex_lock(&file->mutex); |
67cdb40c | 1799 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 1800 | mutex_unlock(&file->mutex); |
67cdb40c | 1801 | |
9ead190b RD |
1802 | uobj->live = 1; |
1803 | ||
1804 | up_write(&uobj->mutex); | |
67cdb40c RD |
1805 | |
1806 | return in_len; | |
1807 | ||
9ead190b RD |
1808 | err_copy: |
1809 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
1810 | |
1811 | err_destroy: | |
1812 | ib_destroy_ah(ah); | |
1813 | ||
9ead190b RD |
1814 | err: |
1815 | put_uobj_write(uobj); | |
67cdb40c RD |
1816 | return ret; |
1817 | } | |
1818 | ||
1819 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
1820 | const char __user *buf, int in_len, int out_len) | |
1821 | { | |
1822 | struct ib_uverbs_destroy_ah cmd; | |
1823 | struct ib_ah *ah; | |
1824 | struct ib_uobject *uobj; | |
9ead190b | 1825 | int ret; |
67cdb40c RD |
1826 | |
1827 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1828 | return -EFAULT; | |
1829 | ||
9ead190b RD |
1830 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
1831 | if (!uobj) | |
1832 | return -EINVAL; | |
1833 | ah = uobj->object; | |
67cdb40c | 1834 | |
9ead190b RD |
1835 | ret = ib_destroy_ah(ah); |
1836 | if (!ret) | |
1837 | uobj->live = 0; | |
67cdb40c | 1838 | |
9ead190b | 1839 | put_uobj_write(uobj); |
67cdb40c | 1840 | |
67cdb40c | 1841 | if (ret) |
9ead190b | 1842 | return ret; |
67cdb40c | 1843 | |
9ead190b | 1844 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 1845 | |
95ed644f | 1846 | mutex_lock(&file->mutex); |
67cdb40c | 1847 | list_del(&uobj->list); |
95ed644f | 1848 | mutex_unlock(&file->mutex); |
67cdb40c | 1849 | |
9ead190b | 1850 | put_uobj(uobj); |
67cdb40c | 1851 | |
9ead190b | 1852 | return in_len; |
67cdb40c RD |
1853 | } |
1854 | ||
bc38a6ab RD |
1855 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
1856 | const char __user *buf, int in_len, | |
1857 | int out_len) | |
1858 | { | |
1859 | struct ib_uverbs_attach_mcast cmd; | |
1860 | struct ib_qp *qp; | |
9ead190b | 1861 | struct ib_uqp_object *obj; |
f4e40156 | 1862 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 1863 | int ret; |
bc38a6ab RD |
1864 | |
1865 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1866 | return -EFAULT; | |
1867 | ||
9ead190b RD |
1868 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1869 | if (!qp) | |
1870 | return -EINVAL; | |
f4e40156 | 1871 | |
9ead190b | 1872 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 1873 | |
9ead190b | 1874 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
1875 | if (cmd.mlid == mcast->lid && |
1876 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1877 | ret = 0; | |
9ead190b | 1878 | goto out_put; |
f4e40156 JM |
1879 | } |
1880 | ||
1881 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
1882 | if (!mcast) { | |
1883 | ret = -ENOMEM; | |
9ead190b | 1884 | goto out_put; |
f4e40156 JM |
1885 | } |
1886 | ||
1887 | mcast->lid = cmd.mlid; | |
1888 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 1889 | |
f4e40156 | 1890 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
1891 | if (!ret) |
1892 | list_add_tail(&mcast->list, &obj->mcast_list); | |
1893 | else | |
f4e40156 JM |
1894 | kfree(mcast); |
1895 | ||
9ead190b RD |
1896 | out_put: |
1897 | put_qp_read(qp); | |
bc38a6ab RD |
1898 | |
1899 | return ret ? ret : in_len; | |
1900 | } | |
1901 | ||
1902 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
1903 | const char __user *buf, int in_len, | |
1904 | int out_len) | |
1905 | { | |
1906 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 1907 | struct ib_uqp_object *obj; |
bc38a6ab | 1908 | struct ib_qp *qp; |
f4e40156 | 1909 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
1910 | int ret = -EINVAL; |
1911 | ||
1912 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1913 | return -EFAULT; | |
1914 | ||
9ead190b RD |
1915 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1916 | if (!qp) | |
1917 | return -EINVAL; | |
bc38a6ab | 1918 | |
f4e40156 JM |
1919 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
1920 | if (ret) | |
9ead190b | 1921 | goto out_put; |
f4e40156 | 1922 | |
9ead190b | 1923 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 1924 | |
9ead190b | 1925 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
1926 | if (cmd.mlid == mcast->lid && |
1927 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1928 | list_del(&mcast->list); | |
1929 | kfree(mcast); | |
1930 | break; | |
1931 | } | |
1932 | ||
9ead190b RD |
1933 | out_put: |
1934 | put_qp_read(qp); | |
bc38a6ab RD |
1935 | |
1936 | return ret ? ret : in_len; | |
1937 | } | |
f520ba5a RD |
1938 | |
1939 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, | |
1940 | const char __user *buf, int in_len, | |
1941 | int out_len) | |
1942 | { | |
1943 | struct ib_uverbs_create_srq cmd; | |
1944 | struct ib_uverbs_create_srq_resp resp; | |
1945 | struct ib_udata udata; | |
9ead190b | 1946 | struct ib_uevent_object *obj; |
f520ba5a RD |
1947 | struct ib_pd *pd; |
1948 | struct ib_srq *srq; | |
1949 | struct ib_srq_init_attr attr; | |
1950 | int ret; | |
1951 | ||
1952 | if (out_len < sizeof resp) | |
1953 | return -ENOSPC; | |
1954 | ||
1955 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1956 | return -EFAULT; | |
1957 | ||
1958 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1959 | (unsigned long) cmd.response + sizeof resp, | |
1960 | in_len - sizeof cmd, out_len - sizeof resp); | |
1961 | ||
9ead190b RD |
1962 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1963 | if (!obj) | |
f520ba5a RD |
1964 | return -ENOMEM; |
1965 | ||
146d26b2 | 1966 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext); |
9ead190b | 1967 | down_write(&obj->uobject.mutex); |
f520ba5a | 1968 | |
9ead190b RD |
1969 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1970 | if (!pd) { | |
f520ba5a | 1971 | ret = -EINVAL; |
9ead190b | 1972 | goto err; |
f520ba5a RD |
1973 | } |
1974 | ||
1975 | attr.event_handler = ib_uverbs_srq_event_handler; | |
1976 | attr.srq_context = file; | |
1977 | attr.attr.max_wr = cmd.max_wr; | |
1978 | attr.attr.max_sge = cmd.max_sge; | |
1979 | attr.attr.srq_limit = cmd.srq_limit; | |
1980 | ||
9ead190b RD |
1981 | obj->events_reported = 0; |
1982 | INIT_LIST_HEAD(&obj->event_list); | |
f520ba5a RD |
1983 | |
1984 | srq = pd->device->create_srq(pd, &attr, &udata); | |
1985 | if (IS_ERR(srq)) { | |
1986 | ret = PTR_ERR(srq); | |
9ead190b | 1987 | goto err; |
f520ba5a RD |
1988 | } |
1989 | ||
1990 | srq->device = pd->device; | |
1991 | srq->pd = pd; | |
9ead190b | 1992 | srq->uobject = &obj->uobject; |
f520ba5a RD |
1993 | srq->event_handler = attr.event_handler; |
1994 | srq->srq_context = attr.srq_context; | |
1995 | atomic_inc(&pd->usecnt); | |
1996 | atomic_set(&srq->usecnt, 0); | |
1997 | ||
9ead190b RD |
1998 | obj->uobject.object = srq; |
1999 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uobject); | |
f520ba5a RD |
2000 | if (ret) |
2001 | goto err_destroy; | |
2002 | ||
9ead190b RD |
2003 | memset(&resp, 0, sizeof resp); |
2004 | resp.srq_handle = obj->uobject.id; | |
ea88fd16 DB |
2005 | resp.max_wr = attr.attr.max_wr; |
2006 | resp.max_sge = attr.attr.max_sge; | |
f520ba5a | 2007 | |
f520ba5a RD |
2008 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2009 | &resp, sizeof resp)) { | |
2010 | ret = -EFAULT; | |
9ead190b | 2011 | goto err_copy; |
f520ba5a RD |
2012 | } |
2013 | ||
9ead190b RD |
2014 | put_pd_read(pd); |
2015 | ||
95ed644f | 2016 | mutex_lock(&file->mutex); |
9ead190b | 2017 | list_add_tail(&obj->uobject.list, &file->ucontext->srq_list); |
95ed644f | 2018 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 2019 | |
9ead190b RD |
2020 | obj->uobject.live = 1; |
2021 | ||
2022 | up_write(&obj->uobject.mutex); | |
f520ba5a RD |
2023 | |
2024 | return in_len; | |
2025 | ||
9ead190b RD |
2026 | err_copy: |
2027 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uobject); | |
f520ba5a RD |
2028 | |
2029 | err_destroy: | |
2030 | ib_destroy_srq(srq); | |
2031 | ||
9ead190b RD |
2032 | err: |
2033 | put_uobj_write(&obj->uobject); | |
f520ba5a RD |
2034 | return ret; |
2035 | } | |
2036 | ||
2037 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, | |
2038 | const char __user *buf, int in_len, | |
2039 | int out_len) | |
2040 | { | |
2041 | struct ib_uverbs_modify_srq cmd; | |
2042 | struct ib_srq *srq; | |
2043 | struct ib_srq_attr attr; | |
2044 | int ret; | |
2045 | ||
2046 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2047 | return -EFAULT; | |
2048 | ||
9ead190b RD |
2049 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2050 | if (!srq) | |
2051 | return -EINVAL; | |
f520ba5a RD |
2052 | |
2053 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
2054 | attr.srq_limit = cmd.srq_limit; |
2055 | ||
2056 | ret = ib_modify_srq(srq, &attr, cmd.attr_mask); | |
2057 | ||
9ead190b | 2058 | put_srq_read(srq); |
f520ba5a RD |
2059 | |
2060 | return ret ? ret : in_len; | |
2061 | } | |
2062 | ||
8bdb0e86 DB |
2063 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
2064 | const char __user *buf, | |
2065 | int in_len, int out_len) | |
2066 | { | |
2067 | struct ib_uverbs_query_srq cmd; | |
2068 | struct ib_uverbs_query_srq_resp resp; | |
2069 | struct ib_srq_attr attr; | |
2070 | struct ib_srq *srq; | |
2071 | int ret; | |
2072 | ||
2073 | if (out_len < sizeof resp) | |
2074 | return -ENOSPC; | |
2075 | ||
2076 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2077 | return -EFAULT; | |
2078 | ||
9ead190b RD |
2079 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2080 | if (!srq) | |
2081 | return -EINVAL; | |
8bdb0e86 | 2082 | |
9ead190b | 2083 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 2084 | |
9ead190b | 2085 | put_srq_read(srq); |
8bdb0e86 DB |
2086 | |
2087 | if (ret) | |
9ead190b | 2088 | return ret; |
8bdb0e86 DB |
2089 | |
2090 | memset(&resp, 0, sizeof resp); | |
2091 | ||
2092 | resp.max_wr = attr.max_wr; | |
2093 | resp.max_sge = attr.max_sge; | |
2094 | resp.srq_limit = attr.srq_limit; | |
2095 | ||
2096 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2097 | &resp, sizeof resp)) | |
9ead190b | 2098 | return -EFAULT; |
8bdb0e86 | 2099 | |
9ead190b | 2100 | return in_len; |
8bdb0e86 DB |
2101 | } |
2102 | ||
f520ba5a RD |
2103 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
2104 | const char __user *buf, int in_len, | |
2105 | int out_len) | |
2106 | { | |
63aaf647 RD |
2107 | struct ib_uverbs_destroy_srq cmd; |
2108 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 2109 | struct ib_uobject *uobj; |
63aaf647 | 2110 | struct ib_srq *srq; |
9ead190b | 2111 | struct ib_uevent_object *obj; |
63aaf647 | 2112 | int ret = -EINVAL; |
f520ba5a RD |
2113 | |
2114 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2115 | return -EFAULT; | |
2116 | ||
9ead190b RD |
2117 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
2118 | if (!uobj) | |
2119 | return -EINVAL; | |
2120 | srq = uobj->object; | |
2121 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
63aaf647 | 2122 | |
9ead190b RD |
2123 | ret = ib_destroy_srq(srq); |
2124 | if (!ret) | |
2125 | uobj->live = 0; | |
f520ba5a | 2126 | |
9ead190b | 2127 | put_uobj_write(uobj); |
f520ba5a | 2128 | |
f520ba5a | 2129 | if (ret) |
9ead190b | 2130 | return ret; |
f520ba5a | 2131 | |
9ead190b | 2132 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 2133 | |
95ed644f | 2134 | mutex_lock(&file->mutex); |
9ead190b | 2135 | list_del(&uobj->list); |
95ed644f | 2136 | mutex_unlock(&file->mutex); |
f520ba5a | 2137 | |
9ead190b | 2138 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 2139 | |
9ead190b RD |
2140 | memset(&resp, 0, sizeof resp); |
2141 | resp.events_reported = obj->events_reported; | |
63aaf647 | 2142 | |
9ead190b | 2143 | put_uobj(uobj); |
f520ba5a | 2144 | |
63aaf647 RD |
2145 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2146 | &resp, sizeof resp)) | |
2147 | ret = -EFAULT; | |
2148 | ||
f520ba5a RD |
2149 | return ret ? ret : in_len; |
2150 | } |