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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 | ||
43db2bc0 RD |
45 | static struct lock_class_key pd_lock_key; |
46 | static struct lock_class_key mr_lock_key; | |
47 | static struct lock_class_key cq_lock_key; | |
48 | static struct lock_class_key qp_lock_key; | |
49 | static struct lock_class_key ah_lock_key; | |
50 | static struct lock_class_key srq_lock_key; | |
51 | ||
bc38a6ab RD |
52 | #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ |
53 | do { \ | |
54 | (udata)->inbuf = (void __user *) (ibuf); \ | |
55 | (udata)->outbuf = (void __user *) (obuf); \ | |
56 | (udata)->inlen = (ilen); \ | |
57 | (udata)->outlen = (olen); \ | |
58 | } while (0) | |
59 | ||
9ead190b RD |
60 | /* |
61 | * The ib_uobject locking scheme is as follows: | |
62 | * | |
63 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it | |
64 | * needs to be held during all idr operations. When an object is | |
65 | * looked up, a reference must be taken on the object's kref before | |
66 | * dropping this lock. | |
67 | * | |
68 | * - Each object also has an rwsem. This rwsem must be held for | |
69 | * reading while an operation that uses the object is performed. | |
70 | * For example, while registering an MR, the associated PD's | |
71 | * uobject.mutex must be held for reading. The rwsem must be held | |
72 | * for writing while initializing or destroying an object. | |
73 | * | |
74 | * - In addition, each object has a "live" flag. If this flag is not | |
75 | * set, then lookups of the object will fail even if it is found in | |
76 | * the idr. This handles a reader that blocks and does not acquire | |
77 | * the rwsem until after the object is destroyed. The destroy | |
78 | * operation will set the live flag to 0 and then drop the rwsem; | |
79 | * this will allow the reader to acquire the rwsem, see that the | |
80 | * live flag is 0, and then drop the rwsem and its reference to | |
81 | * object. The underlying storage will not be freed until the last | |
82 | * reference to the object is dropped. | |
83 | */ | |
84 | ||
85 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, | |
43db2bc0 | 86 | struct ib_ucontext *context, struct lock_class_key *key) |
9ead190b RD |
87 | { |
88 | uobj->user_handle = user_handle; | |
89 | uobj->context = context; | |
90 | kref_init(&uobj->ref); | |
91 | init_rwsem(&uobj->mutex); | |
43db2bc0 | 92 | lockdep_set_class(&uobj->mutex, key); |
9ead190b RD |
93 | uobj->live = 0; |
94 | } | |
95 | ||
96 | static void release_uobj(struct kref *kref) | |
97 | { | |
98 | kfree(container_of(kref, struct ib_uobject, ref)); | |
99 | } | |
100 | ||
101 | static void put_uobj(struct ib_uobject *uobj) | |
102 | { | |
103 | kref_put(&uobj->ref, release_uobj); | |
104 | } | |
105 | ||
106 | static void put_uobj_read(struct ib_uobject *uobj) | |
107 | { | |
108 | up_read(&uobj->mutex); | |
109 | put_uobj(uobj); | |
110 | } | |
111 | ||
112 | static void put_uobj_write(struct ib_uobject *uobj) | |
113 | { | |
114 | up_write(&uobj->mutex); | |
115 | put_uobj(uobj); | |
116 | } | |
117 | ||
118 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) | |
3463175d RD |
119 | { |
120 | int ret; | |
121 | ||
122 | retry: | |
123 | if (!idr_pre_get(idr, GFP_KERNEL)) | |
124 | return -ENOMEM; | |
125 | ||
9ead190b | 126 | spin_lock(&ib_uverbs_idr_lock); |
3463175d | 127 | ret = idr_get_new(idr, uobj, &uobj->id); |
9ead190b | 128 | spin_unlock(&ib_uverbs_idr_lock); |
3463175d RD |
129 | |
130 | if (ret == -EAGAIN) | |
131 | goto retry; | |
132 | ||
133 | return ret; | |
134 | } | |
135 | ||
9ead190b RD |
136 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
137 | { | |
138 | spin_lock(&ib_uverbs_idr_lock); | |
139 | idr_remove(idr, uobj->id); | |
140 | spin_unlock(&ib_uverbs_idr_lock); | |
141 | } | |
142 | ||
143 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, | |
144 | struct ib_ucontext *context) | |
145 | { | |
146 | struct ib_uobject *uobj; | |
147 | ||
148 | spin_lock(&ib_uverbs_idr_lock); | |
149 | uobj = idr_find(idr, id); | |
150 | if (uobj) | |
151 | kref_get(&uobj->ref); | |
152 | spin_unlock(&ib_uverbs_idr_lock); | |
153 | ||
154 | return uobj; | |
155 | } | |
156 | ||
157 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, | |
1ccf6aa1 | 158 | struct ib_ucontext *context, int nested) |
9ead190b RD |
159 | { |
160 | struct ib_uobject *uobj; | |
161 | ||
162 | uobj = __idr_get_uobj(idr, id, context); | |
163 | if (!uobj) | |
164 | return NULL; | |
165 | ||
1ccf6aa1 RD |
166 | if (nested) |
167 | down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING); | |
168 | else | |
169 | down_read(&uobj->mutex); | |
9ead190b RD |
170 | if (!uobj->live) { |
171 | put_uobj_read(uobj); | |
172 | return NULL; | |
173 | } | |
174 | ||
175 | return uobj; | |
176 | } | |
177 | ||
178 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, | |
179 | struct ib_ucontext *context) | |
180 | { | |
181 | struct ib_uobject *uobj; | |
182 | ||
183 | uobj = __idr_get_uobj(idr, id, context); | |
184 | if (!uobj) | |
185 | return NULL; | |
186 | ||
187 | down_write(&uobj->mutex); | |
188 | if (!uobj->live) { | |
189 | put_uobj_write(uobj); | |
190 | return NULL; | |
191 | } | |
192 | ||
193 | return uobj; | |
194 | } | |
195 | ||
1ccf6aa1 RD |
196 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context, |
197 | int nested) | |
9ead190b RD |
198 | { |
199 | struct ib_uobject *uobj; | |
200 | ||
1ccf6aa1 | 201 | uobj = idr_read_uobj(idr, id, context, nested); |
9ead190b RD |
202 | return uobj ? uobj->object : NULL; |
203 | } | |
204 | ||
205 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) | |
206 | { | |
1ccf6aa1 | 207 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0); |
9ead190b RD |
208 | } |
209 | ||
210 | static void put_pd_read(struct ib_pd *pd) | |
211 | { | |
212 | put_uobj_read(pd->uobject); | |
213 | } | |
214 | ||
1ccf6aa1 | 215 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested) |
9ead190b | 216 | { |
1ccf6aa1 | 217 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested); |
9ead190b RD |
218 | } |
219 | ||
220 | static void put_cq_read(struct ib_cq *cq) | |
221 | { | |
222 | put_uobj_read(cq->uobject); | |
223 | } | |
224 | ||
225 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) | |
226 | { | |
1ccf6aa1 | 227 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0); |
9ead190b RD |
228 | } |
229 | ||
230 | static void put_ah_read(struct ib_ah *ah) | |
231 | { | |
232 | put_uobj_read(ah->uobject); | |
233 | } | |
234 | ||
235 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) | |
236 | { | |
1ccf6aa1 | 237 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0); |
9ead190b RD |
238 | } |
239 | ||
240 | static void put_qp_read(struct ib_qp *qp) | |
241 | { | |
242 | put_uobj_read(qp->uobject); | |
243 | } | |
244 | ||
245 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) | |
246 | { | |
1ccf6aa1 | 247 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0); |
9ead190b RD |
248 | } |
249 | ||
250 | static void put_srq_read(struct ib_srq *srq) | |
251 | { | |
252 | put_uobj_read(srq->uobject); | |
253 | } | |
254 | ||
bc38a6ab RD |
255 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
256 | const char __user *buf, | |
257 | int in_len, int out_len) | |
258 | { | |
259 | struct ib_uverbs_get_context cmd; | |
260 | struct ib_uverbs_get_context_resp resp; | |
261 | struct ib_udata udata; | |
262 | struct ib_device *ibdev = file->device->ib_dev; | |
63c47c28 | 263 | struct ib_ucontext *ucontext; |
6b73597e | 264 | struct file *filp; |
63c47c28 | 265 | int ret; |
bc38a6ab RD |
266 | |
267 | if (out_len < sizeof resp) | |
268 | return -ENOSPC; | |
269 | ||
270 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
271 | return -EFAULT; | |
272 | ||
95ed644f | 273 | mutex_lock(&file->mutex); |
63c47c28 RD |
274 | |
275 | if (file->ucontext) { | |
276 | ret = -EINVAL; | |
277 | goto err; | |
278 | } | |
279 | ||
bc38a6ab RD |
280 | INIT_UDATA(&udata, buf + sizeof cmd, |
281 | (unsigned long) cmd.response + sizeof resp, | |
282 | in_len - sizeof cmd, out_len - sizeof resp); | |
283 | ||
63c47c28 | 284 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
77f76013 GC |
285 | if (IS_ERR(ucontext)) { |
286 | ret = PTR_ERR(file->ucontext); | |
287 | goto err; | |
288 | } | |
bc38a6ab | 289 | |
63c47c28 RD |
290 | ucontext->device = ibdev; |
291 | INIT_LIST_HEAD(&ucontext->pd_list); | |
292 | INIT_LIST_HEAD(&ucontext->mr_list); | |
293 | INIT_LIST_HEAD(&ucontext->mw_list); | |
294 | INIT_LIST_HEAD(&ucontext->cq_list); | |
295 | INIT_LIST_HEAD(&ucontext->qp_list); | |
296 | INIT_LIST_HEAD(&ucontext->srq_list); | |
297 | INIT_LIST_HEAD(&ucontext->ah_list); | |
bc38a6ab | 298 | |
6b73597e RD |
299 | resp.num_comp_vectors = file->device->num_comp_vectors; |
300 | ||
301 | filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd); | |
302 | if (IS_ERR(filp)) { | |
303 | ret = PTR_ERR(filp); | |
304 | goto err_free; | |
305 | } | |
bc38a6ab RD |
306 | |
307 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
308 | &resp, sizeof resp)) { |
309 | ret = -EFAULT; | |
6b73597e | 310 | goto err_file; |
63c47c28 RD |
311 | } |
312 | ||
6b73597e RD |
313 | file->async_file = filp->private_data; |
314 | ||
315 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
316 | ib_uverbs_event_handler); | |
317 | ret = ib_register_event_handler(&file->event_handler); | |
318 | if (ret) | |
319 | goto err_file; | |
320 | ||
321 | kref_get(&file->async_file->ref); | |
322 | kref_get(&file->ref); | |
70a30e16 | 323 | file->ucontext = ucontext; |
6b73597e RD |
324 | |
325 | fd_install(resp.async_fd, filp); | |
326 | ||
95ed644f | 327 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
328 | |
329 | return in_len; | |
330 | ||
6b73597e RD |
331 | err_file: |
332 | put_unused_fd(resp.async_fd); | |
333 | fput(filp); | |
334 | ||
63c47c28 RD |
335 | err_free: |
336 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 337 | |
63c47c28 | 338 | err: |
95ed644f | 339 | mutex_unlock(&file->mutex); |
63c47c28 | 340 | return ret; |
bc38a6ab RD |
341 | } |
342 | ||
343 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
344 | const char __user *buf, | |
345 | int in_len, int out_len) | |
346 | { | |
347 | struct ib_uverbs_query_device cmd; | |
348 | struct ib_uverbs_query_device_resp resp; | |
349 | struct ib_device_attr attr; | |
350 | int ret; | |
351 | ||
352 | if (out_len < sizeof resp) | |
353 | return -ENOSPC; | |
354 | ||
355 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
356 | return -EFAULT; | |
357 | ||
358 | ret = ib_query_device(file->device->ib_dev, &attr); | |
359 | if (ret) | |
360 | return ret; | |
361 | ||
362 | memset(&resp, 0, sizeof resp); | |
363 | ||
364 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 365 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
366 | resp.sys_image_guid = attr.sys_image_guid; |
367 | resp.max_mr_size = attr.max_mr_size; | |
368 | resp.page_size_cap = attr.page_size_cap; | |
369 | resp.vendor_id = attr.vendor_id; | |
370 | resp.vendor_part_id = attr.vendor_part_id; | |
371 | resp.hw_ver = attr.hw_ver; | |
372 | resp.max_qp = attr.max_qp; | |
373 | resp.max_qp_wr = attr.max_qp_wr; | |
374 | resp.device_cap_flags = attr.device_cap_flags; | |
375 | resp.max_sge = attr.max_sge; | |
376 | resp.max_sge_rd = attr.max_sge_rd; | |
377 | resp.max_cq = attr.max_cq; | |
378 | resp.max_cqe = attr.max_cqe; | |
379 | resp.max_mr = attr.max_mr; | |
380 | resp.max_pd = attr.max_pd; | |
381 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
382 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
383 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
384 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
385 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
386 | resp.atomic_cap = attr.atomic_cap; | |
387 | resp.max_ee = attr.max_ee; | |
388 | resp.max_rdd = attr.max_rdd; | |
389 | resp.max_mw = attr.max_mw; | |
390 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
391 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
392 | resp.max_mcast_grp = attr.max_mcast_grp; | |
393 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
394 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
395 | resp.max_ah = attr.max_ah; | |
396 | resp.max_fmr = attr.max_fmr; | |
397 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
398 | resp.max_srq = attr.max_srq; | |
399 | resp.max_srq_wr = attr.max_srq_wr; | |
400 | resp.max_srq_sge = attr.max_srq_sge; | |
401 | resp.max_pkeys = attr.max_pkeys; | |
402 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
403 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
404 | ||
405 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
406 | &resp, sizeof resp)) | |
407 | return -EFAULT; | |
408 | ||
409 | return in_len; | |
410 | } | |
411 | ||
412 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
413 | const char __user *buf, | |
414 | int in_len, int out_len) | |
415 | { | |
416 | struct ib_uverbs_query_port cmd; | |
417 | struct ib_uverbs_query_port_resp resp; | |
418 | struct ib_port_attr attr; | |
419 | int ret; | |
420 | ||
421 | if (out_len < sizeof resp) | |
422 | return -ENOSPC; | |
423 | ||
424 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
425 | return -EFAULT; | |
426 | ||
427 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
428 | if (ret) | |
429 | return ret; | |
430 | ||
431 | memset(&resp, 0, sizeof resp); | |
432 | ||
433 | resp.state = attr.state; | |
434 | resp.max_mtu = attr.max_mtu; | |
435 | resp.active_mtu = attr.active_mtu; | |
436 | resp.gid_tbl_len = attr.gid_tbl_len; | |
437 | resp.port_cap_flags = attr.port_cap_flags; | |
438 | resp.max_msg_sz = attr.max_msg_sz; | |
439 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
440 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
441 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
442 | resp.lid = attr.lid; | |
443 | resp.sm_lid = attr.sm_lid; | |
444 | resp.lmc = attr.lmc; | |
445 | resp.max_vl_num = attr.max_vl_num; | |
446 | resp.sm_sl = attr.sm_sl; | |
447 | resp.subnet_timeout = attr.subnet_timeout; | |
448 | resp.init_type_reply = attr.init_type_reply; | |
449 | resp.active_width = attr.active_width; | |
450 | resp.active_speed = attr.active_speed; | |
451 | resp.phys_state = attr.phys_state; | |
452 | ||
453 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
454 | &resp, sizeof resp)) | |
455 | return -EFAULT; | |
456 | ||
457 | return in_len; | |
458 | } | |
459 | ||
bc38a6ab RD |
460 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
461 | const char __user *buf, | |
462 | int in_len, int out_len) | |
463 | { | |
464 | struct ib_uverbs_alloc_pd cmd; | |
465 | struct ib_uverbs_alloc_pd_resp resp; | |
466 | struct ib_udata udata; | |
467 | struct ib_uobject *uobj; | |
468 | struct ib_pd *pd; | |
469 | int ret; | |
470 | ||
471 | if (out_len < sizeof resp) | |
472 | return -ENOSPC; | |
473 | ||
474 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
475 | return -EFAULT; | |
476 | ||
477 | INIT_UDATA(&udata, buf + sizeof cmd, | |
478 | (unsigned long) cmd.response + sizeof resp, | |
479 | in_len - sizeof cmd, out_len - sizeof resp); | |
480 | ||
481 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
482 | if (!uobj) | |
483 | return -ENOMEM; | |
484 | ||
43db2bc0 | 485 | init_uobj(uobj, 0, file->ucontext, &pd_lock_key); |
9ead190b | 486 | down_write(&uobj->mutex); |
bc38a6ab RD |
487 | |
488 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
489 | file->ucontext, &udata); | |
490 | if (IS_ERR(pd)) { | |
491 | ret = PTR_ERR(pd); | |
492 | goto err; | |
493 | } | |
494 | ||
495 | pd->device = file->device->ib_dev; | |
496 | pd->uobject = uobj; | |
497 | atomic_set(&pd->usecnt, 0); | |
498 | ||
9ead190b RD |
499 | uobj->object = pd; |
500 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 501 | if (ret) |
9ead190b | 502 | goto err_idr; |
bc38a6ab RD |
503 | |
504 | memset(&resp, 0, sizeof resp); | |
505 | resp.pd_handle = uobj->id; | |
506 | ||
507 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
508 | &resp, sizeof resp)) { | |
509 | ret = -EFAULT; | |
9ead190b | 510 | goto err_copy; |
bc38a6ab RD |
511 | } |
512 | ||
95ed644f | 513 | mutex_lock(&file->mutex); |
eb9d3cd5 | 514 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 515 | mutex_unlock(&file->mutex); |
bc38a6ab | 516 | |
9ead190b RD |
517 | uobj->live = 1; |
518 | ||
519 | up_write(&uobj->mutex); | |
bc38a6ab | 520 | |
eb9d3cd5 RD |
521 | return in_len; |
522 | ||
9ead190b RD |
523 | err_copy: |
524 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 525 | |
9ead190b | 526 | err_idr: |
bc38a6ab RD |
527 | ib_dealloc_pd(pd); |
528 | ||
529 | err: | |
9ead190b | 530 | put_uobj_write(uobj); |
bc38a6ab RD |
531 | return ret; |
532 | } | |
533 | ||
534 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
535 | const char __user *buf, | |
536 | int in_len, int out_len) | |
537 | { | |
538 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 539 | struct ib_uobject *uobj; |
9ead190b | 540 | int ret; |
bc38a6ab RD |
541 | |
542 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
543 | return -EFAULT; | |
544 | ||
9ead190b RD |
545 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
546 | if (!uobj) | |
547 | return -EINVAL; | |
bc38a6ab | 548 | |
9ead190b RD |
549 | ret = ib_dealloc_pd(uobj->object); |
550 | if (!ret) | |
551 | uobj->live = 0; | |
bc38a6ab | 552 | |
9ead190b | 553 | put_uobj_write(uobj); |
bc38a6ab | 554 | |
bc38a6ab | 555 | if (ret) |
9ead190b | 556 | return ret; |
bc38a6ab | 557 | |
9ead190b | 558 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 559 | |
95ed644f | 560 | mutex_lock(&file->mutex); |
bc38a6ab | 561 | list_del(&uobj->list); |
95ed644f | 562 | mutex_unlock(&file->mutex); |
bc38a6ab | 563 | |
9ead190b | 564 | put_uobj(uobj); |
bc38a6ab | 565 | |
9ead190b | 566 | return in_len; |
bc38a6ab RD |
567 | } |
568 | ||
569 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, | |
570 | const char __user *buf, int in_len, | |
571 | int out_len) | |
572 | { | |
573 | struct ib_uverbs_reg_mr cmd; | |
574 | struct ib_uverbs_reg_mr_resp resp; | |
575 | struct ib_udata udata; | |
576 | struct ib_umem_object *obj; | |
577 | struct ib_pd *pd; | |
578 | struct ib_mr *mr; | |
579 | int ret; | |
580 | ||
581 | if (out_len < sizeof resp) | |
582 | return -ENOSPC; | |
583 | ||
584 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
585 | return -EFAULT; | |
586 | ||
587 | INIT_UDATA(&udata, buf + sizeof cmd, | |
588 | (unsigned long) cmd.response + sizeof resp, | |
589 | in_len - sizeof cmd, out_len - sizeof resp); | |
590 | ||
591 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
592 | return -EINVAL; | |
593 | ||
f575394f RD |
594 | /* |
595 | * Local write permission is required if remote write or | |
596 | * remote atomic permission is also requested. | |
597 | */ | |
598 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
599 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) | |
600 | return -EINVAL; | |
601 | ||
bc38a6ab RD |
602 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
603 | if (!obj) | |
604 | return -ENOMEM; | |
605 | ||
43db2bc0 | 606 | init_uobj(&obj->uobject, 0, file->ucontext, &mr_lock_key); |
9ead190b | 607 | down_write(&obj->uobject.mutex); |
bc38a6ab RD |
608 | |
609 | /* | |
610 | * We ask for writable memory if any access flags other than | |
611 | * "remote read" are set. "Local write" and "remote write" | |
612 | * obviously require write access. "Remote atomic" can do | |
613 | * things like fetch and add, which will modify memory, and | |
614 | * "MW bind" can change permissions by binding a window. | |
615 | */ | |
616 | ret = ib_umem_get(file->device->ib_dev, &obj->umem, | |
617 | (void *) (unsigned long) cmd.start, cmd.length, | |
618 | !!(cmd.access_flags & ~IB_ACCESS_REMOTE_READ)); | |
619 | if (ret) | |
620 | goto err_free; | |
621 | ||
622 | obj->umem.virt_base = cmd.hca_va; | |
623 | ||
9ead190b | 624 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
aaf1aef5 RD |
625 | if (!pd) { |
626 | ret = -EINVAL; | |
9ead190b | 627 | goto err_release; |
aaf1aef5 | 628 | } |
bc38a6ab RD |
629 | |
630 | mr = pd->device->reg_user_mr(pd, &obj->umem, cmd.access_flags, &udata); | |
631 | if (IS_ERR(mr)) { | |
632 | ret = PTR_ERR(mr); | |
9ead190b | 633 | goto err_put; |
bc38a6ab RD |
634 | } |
635 | ||
636 | mr->device = pd->device; | |
637 | mr->pd = pd; | |
638 | mr->uobject = &obj->uobject; | |
639 | atomic_inc(&pd->usecnt); | |
640 | atomic_set(&mr->usecnt, 0); | |
641 | ||
9ead190b RD |
642 | obj->uobject.object = mr; |
643 | ret = idr_add_uobj(&ib_uverbs_mr_idr, &obj->uobject); | |
bc38a6ab RD |
644 | if (ret) |
645 | goto err_unreg; | |
646 | ||
9ead190b RD |
647 | memset(&resp, 0, sizeof resp); |
648 | resp.lkey = mr->lkey; | |
649 | resp.rkey = mr->rkey; | |
bc38a6ab RD |
650 | resp.mr_handle = obj->uobject.id; |
651 | ||
bc38a6ab RD |
652 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
653 | &resp, sizeof resp)) { | |
654 | ret = -EFAULT; | |
9ead190b | 655 | goto err_copy; |
bc38a6ab RD |
656 | } |
657 | ||
9ead190b RD |
658 | put_pd_read(pd); |
659 | ||
95ed644f | 660 | mutex_lock(&file->mutex); |
eb9d3cd5 | 661 | list_add_tail(&obj->uobject.list, &file->ucontext->mr_list); |
95ed644f | 662 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 663 | |
9ead190b RD |
664 | obj->uobject.live = 1; |
665 | ||
666 | up_write(&obj->uobject.mutex); | |
bc38a6ab RD |
667 | |
668 | return in_len; | |
669 | ||
9ead190b RD |
670 | err_copy: |
671 | idr_remove_uobj(&ib_uverbs_mr_idr, &obj->uobject); | |
bc38a6ab RD |
672 | |
673 | err_unreg: | |
674 | ib_dereg_mr(mr); | |
675 | ||
9ead190b RD |
676 | err_put: |
677 | put_pd_read(pd); | |
bc38a6ab | 678 | |
9ead190b | 679 | err_release: |
bc38a6ab RD |
680 | ib_umem_release(file->device->ib_dev, &obj->umem); |
681 | ||
682 | err_free: | |
9ead190b | 683 | put_uobj_write(&obj->uobject); |
bc38a6ab RD |
684 | return ret; |
685 | } | |
686 | ||
687 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
688 | const char __user *buf, int in_len, | |
689 | int out_len) | |
690 | { | |
691 | struct ib_uverbs_dereg_mr cmd; | |
692 | struct ib_mr *mr; | |
9ead190b | 693 | struct ib_uobject *uobj; |
bc38a6ab RD |
694 | struct ib_umem_object *memobj; |
695 | int ret = -EINVAL; | |
696 | ||
697 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
698 | return -EFAULT; | |
699 | ||
9ead190b RD |
700 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
701 | if (!uobj) | |
702 | return -EINVAL; | |
bc38a6ab | 703 | |
9ead190b RD |
704 | memobj = container_of(uobj, struct ib_umem_object, uobject); |
705 | mr = uobj->object; | |
bc38a6ab RD |
706 | |
707 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
708 | if (!ret) |
709 | uobj->live = 0; | |
710 | ||
711 | put_uobj_write(uobj); | |
712 | ||
bc38a6ab | 713 | if (ret) |
9ead190b | 714 | return ret; |
bc38a6ab | 715 | |
9ead190b | 716 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 717 | |
95ed644f | 718 | mutex_lock(&file->mutex); |
9ead190b | 719 | list_del(&uobj->list); |
95ed644f | 720 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
721 | |
722 | ib_umem_release(file->device->ib_dev, &memobj->umem); | |
bc38a6ab | 723 | |
9ead190b | 724 | put_uobj(uobj); |
bc38a6ab | 725 | |
9ead190b | 726 | return in_len; |
bc38a6ab RD |
727 | } |
728 | ||
6b73597e RD |
729 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
730 | const char __user *buf, int in_len, | |
731 | int out_len) | |
732 | { | |
733 | struct ib_uverbs_create_comp_channel cmd; | |
734 | struct ib_uverbs_create_comp_channel_resp resp; | |
735 | struct file *filp; | |
736 | ||
737 | if (out_len < sizeof resp) | |
738 | return -ENOSPC; | |
739 | ||
740 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
741 | return -EFAULT; | |
742 | ||
743 | filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd); | |
744 | if (IS_ERR(filp)) | |
745 | return PTR_ERR(filp); | |
746 | ||
747 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
748 | &resp, sizeof resp)) { | |
749 | put_unused_fd(resp.fd); | |
750 | fput(filp); | |
751 | return -EFAULT; | |
752 | } | |
753 | ||
754 | fd_install(resp.fd, filp); | |
755 | return in_len; | |
756 | } | |
757 | ||
bc38a6ab RD |
758 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
759 | const char __user *buf, int in_len, | |
760 | int out_len) | |
761 | { | |
762 | struct ib_uverbs_create_cq cmd; | |
763 | struct ib_uverbs_create_cq_resp resp; | |
764 | struct ib_udata udata; | |
9ead190b | 765 | struct ib_ucq_object *obj; |
6b73597e | 766 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
767 | struct ib_cq *cq; |
768 | int ret; | |
769 | ||
770 | if (out_len < sizeof resp) | |
771 | return -ENOSPC; | |
772 | ||
773 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
774 | return -EFAULT; | |
775 | ||
776 | INIT_UDATA(&udata, buf + sizeof cmd, | |
777 | (unsigned long) cmd.response + sizeof resp, | |
778 | in_len - sizeof cmd, out_len - sizeof resp); | |
779 | ||
6b73597e | 780 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
bc38a6ab RD |
781 | return -EINVAL; |
782 | ||
9ead190b RD |
783 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
784 | if (!obj) | |
bc38a6ab RD |
785 | return -ENOMEM; |
786 | ||
43db2bc0 | 787 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &cq_lock_key); |
9ead190b RD |
788 | down_write(&obj->uobject.mutex); |
789 | ||
ac4e7b35 JM |
790 | if (cmd.comp_channel >= 0) { |
791 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); | |
792 | if (!ev_file) { | |
793 | ret = -EINVAL; | |
794 | goto err; | |
795 | } | |
796 | } | |
797 | ||
9ead190b RD |
798 | obj->uverbs_file = file; |
799 | obj->comp_events_reported = 0; | |
800 | obj->async_events_reported = 0; | |
801 | INIT_LIST_HEAD(&obj->comp_list); | |
802 | INIT_LIST_HEAD(&obj->async_list); | |
bc38a6ab RD |
803 | |
804 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, | |
f4fd0b22 | 805 | cmd.comp_vector, |
bc38a6ab RD |
806 | file->ucontext, &udata); |
807 | if (IS_ERR(cq)) { | |
808 | ret = PTR_ERR(cq); | |
9ead190b | 809 | goto err_file; |
bc38a6ab RD |
810 | } |
811 | ||
812 | cq->device = file->device->ib_dev; | |
9ead190b | 813 | cq->uobject = &obj->uobject; |
bc38a6ab RD |
814 | cq->comp_handler = ib_uverbs_comp_handler; |
815 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 816 | cq->cq_context = ev_file; |
bc38a6ab RD |
817 | atomic_set(&cq->usecnt, 0); |
818 | ||
9ead190b RD |
819 | obj->uobject.object = cq; |
820 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
bc38a6ab | 821 | if (ret) |
9ead190b | 822 | goto err_free; |
bc38a6ab RD |
823 | |
824 | memset(&resp, 0, sizeof resp); | |
9ead190b | 825 | resp.cq_handle = obj->uobject.id; |
bc38a6ab RD |
826 | resp.cqe = cq->cqe; |
827 | ||
828 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
829 | &resp, sizeof resp)) { | |
830 | ret = -EFAULT; | |
9ead190b | 831 | goto err_copy; |
bc38a6ab RD |
832 | } |
833 | ||
95ed644f | 834 | mutex_lock(&file->mutex); |
9ead190b | 835 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 836 | mutex_unlock(&file->mutex); |
bc38a6ab | 837 | |
9ead190b RD |
838 | obj->uobject.live = 1; |
839 | ||
840 | up_write(&obj->uobject.mutex); | |
bc38a6ab | 841 | |
eb9d3cd5 RD |
842 | return in_len; |
843 | ||
9ead190b RD |
844 | err_copy: |
845 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
eb9d3cd5 | 846 | |
9ead190b | 847 | err_free: |
bc38a6ab RD |
848 | ib_destroy_cq(cq); |
849 | ||
9ead190b | 850 | err_file: |
ac4e7b35 | 851 | if (ev_file) |
9ead190b RD |
852 | ib_uverbs_release_ucq(file, ev_file, obj); |
853 | ||
854 | err: | |
855 | put_uobj_write(&obj->uobject); | |
bc38a6ab RD |
856 | return ret; |
857 | } | |
858 | ||
33b9b3ee RD |
859 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
860 | const char __user *buf, int in_len, | |
861 | int out_len) | |
862 | { | |
863 | struct ib_uverbs_resize_cq cmd; | |
864 | struct ib_uverbs_resize_cq_resp resp; | |
865 | struct ib_udata udata; | |
866 | struct ib_cq *cq; | |
867 | int ret = -EINVAL; | |
868 | ||
869 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
870 | return -EFAULT; | |
871 | ||
872 | INIT_UDATA(&udata, buf + sizeof cmd, | |
873 | (unsigned long) cmd.response + sizeof resp, | |
874 | in_len - sizeof cmd, out_len - sizeof resp); | |
875 | ||
1ccf6aa1 | 876 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
9ead190b RD |
877 | if (!cq) |
878 | return -EINVAL; | |
33b9b3ee RD |
879 | |
880 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
881 | if (ret) | |
882 | goto out; | |
883 | ||
33b9b3ee RD |
884 | resp.cqe = cq->cqe; |
885 | ||
886 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
64f817ba | 887 | &resp, sizeof resp.cqe)) |
33b9b3ee RD |
888 | ret = -EFAULT; |
889 | ||
890 | out: | |
9ead190b | 891 | put_cq_read(cq); |
33b9b3ee RD |
892 | |
893 | return ret ? ret : in_len; | |
894 | } | |
895 | ||
67cdb40c RD |
896 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
897 | const char __user *buf, int in_len, | |
898 | int out_len) | |
899 | { | |
900 | struct ib_uverbs_poll_cq cmd; | |
901 | struct ib_uverbs_poll_cq_resp *resp; | |
902 | struct ib_cq *cq; | |
903 | struct ib_wc *wc; | |
904 | int ret = 0; | |
905 | int i; | |
906 | int rsize; | |
907 | ||
908 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
909 | return -EFAULT; | |
910 | ||
911 | wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL); | |
912 | if (!wc) | |
913 | return -ENOMEM; | |
914 | ||
915 | rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc); | |
916 | resp = kmalloc(rsize, GFP_KERNEL); | |
917 | if (!resp) { | |
918 | ret = -ENOMEM; | |
919 | goto out_wc; | |
920 | } | |
921 | ||
1ccf6aa1 | 922 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 923 | if (!cq) { |
67cdb40c RD |
924 | ret = -EINVAL; |
925 | goto out; | |
926 | } | |
927 | ||
928 | resp->count = ib_poll_cq(cq, cmd.ne, wc); | |
929 | ||
ab108676 | 930 | put_cq_read(cq); |
9ead190b | 931 | |
67cdb40c RD |
932 | for (i = 0; i < resp->count; i++) { |
933 | resp->wc[i].wr_id = wc[i].wr_id; | |
934 | resp->wc[i].status = wc[i].status; | |
935 | resp->wc[i].opcode = wc[i].opcode; | |
936 | resp->wc[i].vendor_err = wc[i].vendor_err; | |
937 | resp->wc[i].byte_len = wc[i].byte_len; | |
77369ed3 | 938 | resp->wc[i].imm_data = (__u32 __force) wc[i].imm_data; |
062dbb69 | 939 | resp->wc[i].qp_num = wc[i].qp->qp_num; |
67cdb40c RD |
940 | resp->wc[i].src_qp = wc[i].src_qp; |
941 | resp->wc[i].wc_flags = wc[i].wc_flags; | |
942 | resp->wc[i].pkey_index = wc[i].pkey_index; | |
943 | resp->wc[i].slid = wc[i].slid; | |
944 | resp->wc[i].sl = wc[i].sl; | |
945 | resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits; | |
946 | resp->wc[i].port_num = wc[i].port_num; | |
947 | } | |
948 | ||
949 | if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize)) | |
950 | ret = -EFAULT; | |
951 | ||
952 | out: | |
67cdb40c RD |
953 | kfree(resp); |
954 | ||
955 | out_wc: | |
956 | kfree(wc); | |
957 | return ret ? ret : in_len; | |
958 | } | |
959 | ||
960 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
961 | const char __user *buf, int in_len, | |
962 | int out_len) | |
963 | { | |
964 | struct ib_uverbs_req_notify_cq cmd; | |
965 | struct ib_cq *cq; | |
67cdb40c RD |
966 | |
967 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
968 | return -EFAULT; | |
969 | ||
1ccf6aa1 | 970 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 971 | if (!cq) |
9ead190b | 972 | return -EINVAL; |
67cdb40c | 973 | |
9ead190b RD |
974 | ib_req_notify_cq(cq, cmd.solicited_only ? |
975 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
976 | ||
ab108676 | 977 | put_cq_read(cq); |
9ead190b RD |
978 | |
979 | return in_len; | |
67cdb40c RD |
980 | } |
981 | ||
bc38a6ab RD |
982 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
983 | const char __user *buf, int in_len, | |
984 | int out_len) | |
985 | { | |
63aaf647 RD |
986 | struct ib_uverbs_destroy_cq cmd; |
987 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 988 | struct ib_uobject *uobj; |
63aaf647 | 989 | struct ib_cq *cq; |
9ead190b | 990 | struct ib_ucq_object *obj; |
6b73597e | 991 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 992 | int ret = -EINVAL; |
bc38a6ab RD |
993 | |
994 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
995 | return -EFAULT; | |
996 | ||
9ead190b RD |
997 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
998 | if (!uobj) | |
999 | return -EINVAL; | |
1000 | cq = uobj->object; | |
1001 | ev_file = cq->cq_context; | |
1002 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 1003 | |
9ead190b RD |
1004 | ret = ib_destroy_cq(cq); |
1005 | if (!ret) | |
1006 | uobj->live = 0; | |
bc38a6ab | 1007 | |
9ead190b | 1008 | put_uobj_write(uobj); |
bc38a6ab | 1009 | |
bc38a6ab | 1010 | if (ret) |
9ead190b | 1011 | return ret; |
bc38a6ab | 1012 | |
9ead190b | 1013 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 1014 | |
95ed644f | 1015 | mutex_lock(&file->mutex); |
9ead190b | 1016 | list_del(&uobj->list); |
95ed644f | 1017 | mutex_unlock(&file->mutex); |
bc38a6ab | 1018 | |
9ead190b | 1019 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1020 | |
9ead190b RD |
1021 | memset(&resp, 0, sizeof resp); |
1022 | resp.comp_events_reported = obj->comp_events_reported; | |
1023 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1024 | |
9ead190b | 1025 | put_uobj(uobj); |
bc38a6ab | 1026 | |
63aaf647 RD |
1027 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1028 | &resp, sizeof resp)) | |
9ead190b | 1029 | return -EFAULT; |
bc38a6ab | 1030 | |
9ead190b | 1031 | return in_len; |
bc38a6ab RD |
1032 | } |
1033 | ||
1034 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
1035 | const char __user *buf, int in_len, | |
1036 | int out_len) | |
1037 | { | |
1038 | struct ib_uverbs_create_qp cmd; | |
1039 | struct ib_uverbs_create_qp_resp resp; | |
1040 | struct ib_udata udata; | |
9ead190b | 1041 | struct ib_uqp_object *obj; |
bc38a6ab RD |
1042 | struct ib_pd *pd; |
1043 | struct ib_cq *scq, *rcq; | |
f520ba5a | 1044 | struct ib_srq *srq; |
bc38a6ab RD |
1045 | struct ib_qp *qp; |
1046 | struct ib_qp_init_attr attr; | |
1047 | int ret; | |
1048 | ||
1049 | if (out_len < sizeof resp) | |
1050 | return -ENOSPC; | |
1051 | ||
1052 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1053 | return -EFAULT; | |
1054 | ||
1055 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1056 | (unsigned long) cmd.response + sizeof resp, | |
1057 | in_len - sizeof cmd, out_len - sizeof resp); | |
1058 | ||
9ead190b RD |
1059 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1060 | if (!obj) | |
bc38a6ab RD |
1061 | return -ENOMEM; |
1062 | ||
43db2bc0 | 1063 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_key); |
9ead190b | 1064 | down_write(&obj->uevent.uobject.mutex); |
bc38a6ab | 1065 | |
43db2bc0 | 1066 | srq = cmd.is_srq ? idr_read_srq(cmd.srq_handle, file->ucontext) : NULL; |
9ead190b | 1067 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1ccf6aa1 | 1068 | scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, 0); |
43db2bc0 | 1069 | rcq = cmd.recv_cq_handle == cmd.send_cq_handle ? |
1ccf6aa1 | 1070 | scq : idr_read_cq(cmd.recv_cq_handle, file->ucontext, 1); |
bc38a6ab | 1071 | |
9ead190b | 1072 | if (!pd || !scq || !rcq || (cmd.is_srq && !srq)) { |
bc38a6ab | 1073 | ret = -EINVAL; |
9ead190b | 1074 | goto err_put; |
bc38a6ab RD |
1075 | } |
1076 | ||
1077 | attr.event_handler = ib_uverbs_qp_event_handler; | |
1078 | attr.qp_context = file; | |
1079 | attr.send_cq = scq; | |
1080 | attr.recv_cq = rcq; | |
f520ba5a | 1081 | attr.srq = srq; |
bc38a6ab RD |
1082 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
1083 | attr.qp_type = cmd.qp_type; | |
1084 | ||
1085 | attr.cap.max_send_wr = cmd.max_send_wr; | |
1086 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
1087 | attr.cap.max_send_sge = cmd.max_send_sge; | |
1088 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
1089 | attr.cap.max_inline_data = cmd.max_inline_data; | |
1090 | ||
9ead190b RD |
1091 | obj->uevent.events_reported = 0; |
1092 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1093 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab RD |
1094 | |
1095 | qp = pd->device->create_qp(pd, &attr, &udata); | |
1096 | if (IS_ERR(qp)) { | |
1097 | ret = PTR_ERR(qp); | |
9ead190b | 1098 | goto err_put; |
bc38a6ab RD |
1099 | } |
1100 | ||
1101 | qp->device = pd->device; | |
1102 | qp->pd = pd; | |
1103 | qp->send_cq = attr.send_cq; | |
1104 | qp->recv_cq = attr.recv_cq; | |
1105 | qp->srq = attr.srq; | |
9ead190b | 1106 | qp->uobject = &obj->uevent.uobject; |
bc38a6ab RD |
1107 | qp->event_handler = attr.event_handler; |
1108 | qp->qp_context = attr.qp_context; | |
1109 | qp->qp_type = attr.qp_type; | |
1110 | atomic_inc(&pd->usecnt); | |
1111 | atomic_inc(&attr.send_cq->usecnt); | |
1112 | atomic_inc(&attr.recv_cq->usecnt); | |
1113 | if (attr.srq) | |
1114 | atomic_inc(&attr.srq->usecnt); | |
1115 | ||
9ead190b RD |
1116 | obj->uevent.uobject.object = qp; |
1117 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1118 | if (ret) |
1119 | goto err_destroy; | |
1120 | ||
9ead190b RD |
1121 | memset(&resp, 0, sizeof resp); |
1122 | resp.qpn = qp->qp_num; | |
1123 | resp.qp_handle = obj->uevent.uobject.id; | |
77369ed3 JM |
1124 | resp.max_recv_sge = attr.cap.max_recv_sge; |
1125 | resp.max_send_sge = attr.cap.max_send_sge; | |
1126 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
1127 | resp.max_send_wr = attr.cap.max_send_wr; | |
1128 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1129 | |
bc38a6ab RD |
1130 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1131 | &resp, sizeof resp)) { | |
1132 | ret = -EFAULT; | |
9ead190b | 1133 | goto err_copy; |
bc38a6ab RD |
1134 | } |
1135 | ||
9ead190b RD |
1136 | put_pd_read(pd); |
1137 | put_cq_read(scq); | |
43db2bc0 RD |
1138 | if (rcq != scq) |
1139 | put_cq_read(rcq); | |
9ead190b RD |
1140 | if (srq) |
1141 | put_srq_read(srq); | |
1142 | ||
95ed644f | 1143 | mutex_lock(&file->mutex); |
9ead190b | 1144 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1145 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1146 | |
9ead190b RD |
1147 | obj->uevent.uobject.live = 1; |
1148 | ||
1149 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab RD |
1150 | |
1151 | return in_len; | |
1152 | ||
9ead190b RD |
1153 | err_copy: |
1154 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1155 | |
1156 | err_destroy: | |
1157 | ib_destroy_qp(qp); | |
1158 | ||
9ead190b RD |
1159 | err_put: |
1160 | if (pd) | |
1161 | put_pd_read(pd); | |
1162 | if (scq) | |
1163 | put_cq_read(scq); | |
43db2bc0 | 1164 | if (rcq && rcq != scq) |
9ead190b RD |
1165 | put_cq_read(rcq); |
1166 | if (srq) | |
1167 | put_srq_read(srq); | |
1168 | ||
1169 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
1170 | return ret; |
1171 | } | |
1172 | ||
7ccc9a24 DB |
1173 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
1174 | const char __user *buf, int in_len, | |
1175 | int out_len) | |
1176 | { | |
1177 | struct ib_uverbs_query_qp cmd; | |
1178 | struct ib_uverbs_query_qp_resp resp; | |
1179 | struct ib_qp *qp; | |
1180 | struct ib_qp_attr *attr; | |
1181 | struct ib_qp_init_attr *init_attr; | |
1182 | int ret; | |
1183 | ||
1184 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1185 | return -EFAULT; | |
1186 | ||
1187 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1188 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
1189 | if (!attr || !init_attr) { | |
1190 | ret = -ENOMEM; | |
1191 | goto out; | |
1192 | } | |
1193 | ||
9ead190b RD |
1194 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1195 | if (!qp) { | |
7ccc9a24 | 1196 | ret = -EINVAL; |
9ead190b RD |
1197 | goto out; |
1198 | } | |
1199 | ||
1200 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 1201 | |
9ead190b | 1202 | put_qp_read(qp); |
7ccc9a24 DB |
1203 | |
1204 | if (ret) | |
1205 | goto out; | |
1206 | ||
1207 | memset(&resp, 0, sizeof resp); | |
1208 | ||
1209 | resp.qp_state = attr->qp_state; | |
1210 | resp.cur_qp_state = attr->cur_qp_state; | |
1211 | resp.path_mtu = attr->path_mtu; | |
1212 | resp.path_mig_state = attr->path_mig_state; | |
1213 | resp.qkey = attr->qkey; | |
1214 | resp.rq_psn = attr->rq_psn; | |
1215 | resp.sq_psn = attr->sq_psn; | |
1216 | resp.dest_qp_num = attr->dest_qp_num; | |
1217 | resp.qp_access_flags = attr->qp_access_flags; | |
1218 | resp.pkey_index = attr->pkey_index; | |
1219 | resp.alt_pkey_index = attr->alt_pkey_index; | |
0b26c88f | 1220 | resp.sq_draining = attr->sq_draining; |
7ccc9a24 DB |
1221 | resp.max_rd_atomic = attr->max_rd_atomic; |
1222 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1223 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1224 | resp.port_num = attr->port_num; | |
1225 | resp.timeout = attr->timeout; | |
1226 | resp.retry_cnt = attr->retry_cnt; | |
1227 | resp.rnr_retry = attr->rnr_retry; | |
1228 | resp.alt_port_num = attr->alt_port_num; | |
1229 | resp.alt_timeout = attr->alt_timeout; | |
1230 | ||
1231 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1232 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1233 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1234 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1235 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1236 | resp.dest.dlid = attr->ah_attr.dlid; | |
1237 | resp.dest.sl = attr->ah_attr.sl; | |
1238 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1239 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1240 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1241 | resp.dest.port_num = attr->ah_attr.port_num; | |
1242 | ||
1243 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1244 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1245 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1246 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1247 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1248 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1249 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1250 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1251 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1252 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1253 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1254 | ||
1255 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1256 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1257 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1258 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1259 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1260 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1261 | |
1262 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1263 | &resp, sizeof resp)) | |
1264 | ret = -EFAULT; | |
1265 | ||
1266 | out: | |
1267 | kfree(attr); | |
1268 | kfree(init_attr); | |
1269 | ||
1270 | return ret ? ret : in_len; | |
1271 | } | |
1272 | ||
bc38a6ab RD |
1273 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1274 | const char __user *buf, int in_len, | |
1275 | int out_len) | |
1276 | { | |
1277 | struct ib_uverbs_modify_qp cmd; | |
9bc57e2d | 1278 | struct ib_udata udata; |
bc38a6ab RD |
1279 | struct ib_qp *qp; |
1280 | struct ib_qp_attr *attr; | |
1281 | int ret; | |
1282 | ||
1283 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1284 | return -EFAULT; | |
1285 | ||
9bc57e2d RC |
1286 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
1287 | out_len); | |
1288 | ||
bc38a6ab RD |
1289 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
1290 | if (!attr) | |
1291 | return -ENOMEM; | |
1292 | ||
9ead190b RD |
1293 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1294 | if (!qp) { | |
bc38a6ab RD |
1295 | ret = -EINVAL; |
1296 | goto out; | |
1297 | } | |
1298 | ||
1299 | attr->qp_state = cmd.qp_state; | |
1300 | attr->cur_qp_state = cmd.cur_qp_state; | |
1301 | attr->path_mtu = cmd.path_mtu; | |
1302 | attr->path_mig_state = cmd.path_mig_state; | |
1303 | attr->qkey = cmd.qkey; | |
1304 | attr->rq_psn = cmd.rq_psn; | |
1305 | attr->sq_psn = cmd.sq_psn; | |
1306 | attr->dest_qp_num = cmd.dest_qp_num; | |
1307 | attr->qp_access_flags = cmd.qp_access_flags; | |
1308 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1309 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1310 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1311 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1312 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1313 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1314 | attr->port_num = cmd.port_num; | |
1315 | attr->timeout = cmd.timeout; | |
1316 | attr->retry_cnt = cmd.retry_cnt; | |
1317 | attr->rnr_retry = cmd.rnr_retry; | |
1318 | attr->alt_port_num = cmd.alt_port_num; | |
1319 | attr->alt_timeout = cmd.alt_timeout; | |
1320 | ||
1321 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1322 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1323 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1324 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1325 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1326 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1327 | attr->ah_attr.sl = cmd.dest.sl; | |
1328 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1329 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1330 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1331 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1332 | ||
1333 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1334 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1335 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1336 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1337 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1338 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1339 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1340 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1341 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1342 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1343 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1344 | ||
9bc57e2d | 1345 | ret = qp->device->modify_qp(qp, attr, cmd.attr_mask, &udata); |
9ead190b RD |
1346 | |
1347 | put_qp_read(qp); | |
1348 | ||
bc38a6ab RD |
1349 | if (ret) |
1350 | goto out; | |
1351 | ||
1352 | ret = in_len; | |
1353 | ||
1354 | out: | |
bc38a6ab RD |
1355 | kfree(attr); |
1356 | ||
1357 | return ret; | |
1358 | } | |
1359 | ||
1360 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1361 | const char __user *buf, int in_len, | |
1362 | int out_len) | |
1363 | { | |
63aaf647 RD |
1364 | struct ib_uverbs_destroy_qp cmd; |
1365 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 1366 | struct ib_uobject *uobj; |
63aaf647 | 1367 | struct ib_qp *qp; |
9ead190b | 1368 | struct ib_uqp_object *obj; |
63aaf647 | 1369 | int ret = -EINVAL; |
bc38a6ab RD |
1370 | |
1371 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1372 | return -EFAULT; | |
1373 | ||
63aaf647 RD |
1374 | memset(&resp, 0, sizeof resp); |
1375 | ||
9ead190b RD |
1376 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
1377 | if (!uobj) | |
1378 | return -EINVAL; | |
1379 | qp = uobj->object; | |
1380 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 1381 | |
9ead190b RD |
1382 | if (!list_empty(&obj->mcast_list)) { |
1383 | put_uobj_write(uobj); | |
1384 | return -EBUSY; | |
f4e40156 | 1385 | } |
bc38a6ab RD |
1386 | |
1387 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
1388 | if (!ret) |
1389 | uobj->live = 0; | |
1390 | ||
1391 | put_uobj_write(uobj); | |
1392 | ||
bc38a6ab | 1393 | if (ret) |
9ead190b | 1394 | return ret; |
bc38a6ab | 1395 | |
9ead190b | 1396 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 1397 | |
95ed644f | 1398 | mutex_lock(&file->mutex); |
9ead190b | 1399 | list_del(&uobj->list); |
95ed644f | 1400 | mutex_unlock(&file->mutex); |
bc38a6ab | 1401 | |
9ead190b | 1402 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 1403 | |
9ead190b | 1404 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 1405 | |
9ead190b | 1406 | put_uobj(uobj); |
bc38a6ab | 1407 | |
63aaf647 RD |
1408 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1409 | &resp, sizeof resp)) | |
9ead190b | 1410 | return -EFAULT; |
bc38a6ab | 1411 | |
9ead190b | 1412 | return in_len; |
bc38a6ab RD |
1413 | } |
1414 | ||
67cdb40c | 1415 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
1416 | const char __user *buf, int in_len, |
1417 | int out_len) | |
67cdb40c RD |
1418 | { |
1419 | struct ib_uverbs_post_send cmd; | |
1420 | struct ib_uverbs_post_send_resp resp; | |
1421 | struct ib_uverbs_send_wr *user_wr; | |
1422 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
1423 | struct ib_qp *qp; | |
1424 | int i, sg_ind; | |
9ead190b | 1425 | int is_ud; |
67cdb40c RD |
1426 | ssize_t ret = -EINVAL; |
1427 | ||
1428 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1429 | return -EFAULT; | |
1430 | ||
1431 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
1432 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
1433 | return -EINVAL; | |
1434 | ||
1435 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
1436 | return -EINVAL; | |
1437 | ||
1438 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
1439 | if (!user_wr) | |
1440 | return -ENOMEM; | |
1441 | ||
9ead190b RD |
1442 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1443 | if (!qp) | |
67cdb40c RD |
1444 | goto out; |
1445 | ||
9ead190b | 1446 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
1447 | sg_ind = 0; |
1448 | last = NULL; | |
1449 | for (i = 0; i < cmd.wr_count; ++i) { | |
1450 | if (copy_from_user(user_wr, | |
1451 | buf + sizeof cmd + i * cmd.wqe_size, | |
1452 | cmd.wqe_size)) { | |
1453 | ret = -EFAULT; | |
9ead190b | 1454 | goto out_put; |
67cdb40c RD |
1455 | } |
1456 | ||
1457 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
1458 | ret = -EINVAL; | |
9ead190b | 1459 | goto out_put; |
67cdb40c RD |
1460 | } |
1461 | ||
1462 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1463 | user_wr->num_sge * sizeof (struct ib_sge), | |
1464 | GFP_KERNEL); | |
1465 | if (!next) { | |
1466 | ret = -ENOMEM; | |
9ead190b | 1467 | goto out_put; |
67cdb40c RD |
1468 | } |
1469 | ||
1470 | if (!last) | |
1471 | wr = next; | |
1472 | else | |
1473 | last->next = next; | |
1474 | last = next; | |
1475 | ||
1476 | next->next = NULL; | |
1477 | next->wr_id = user_wr->wr_id; | |
1478 | next->num_sge = user_wr->num_sge; | |
1479 | next->opcode = user_wr->opcode; | |
1480 | next->send_flags = user_wr->send_flags; | |
77369ed3 | 1481 | next->imm_data = (__be32 __force) user_wr->imm_data; |
67cdb40c | 1482 | |
9ead190b RD |
1483 | if (is_ud) { |
1484 | next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, | |
1485 | file->ucontext); | |
67cdb40c RD |
1486 | if (!next->wr.ud.ah) { |
1487 | ret = -EINVAL; | |
9ead190b | 1488 | goto out_put; |
67cdb40c RD |
1489 | } |
1490 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
1491 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
1492 | } else { | |
1493 | switch (next->opcode) { | |
1494 | case IB_WR_RDMA_WRITE: | |
1495 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
1496 | case IB_WR_RDMA_READ: | |
1497 | next->wr.rdma.remote_addr = | |
1498 | user_wr->wr.rdma.remote_addr; | |
1499 | next->wr.rdma.rkey = | |
1500 | user_wr->wr.rdma.rkey; | |
1501 | break; | |
1502 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
1503 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
1504 | next->wr.atomic.remote_addr = | |
1505 | user_wr->wr.atomic.remote_addr; | |
1506 | next->wr.atomic.compare_add = | |
1507 | user_wr->wr.atomic.compare_add; | |
1508 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
1509 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
1510 | break; | |
1511 | default: | |
1512 | break; | |
1513 | } | |
1514 | } | |
1515 | ||
1516 | if (next->num_sge) { | |
1517 | next->sg_list = (void *) next + | |
1518 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1519 | if (copy_from_user(next->sg_list, | |
1520 | buf + sizeof cmd + | |
1521 | cmd.wr_count * cmd.wqe_size + | |
1522 | sg_ind * sizeof (struct ib_sge), | |
1523 | next->num_sge * sizeof (struct ib_sge))) { | |
1524 | ret = -EFAULT; | |
9ead190b | 1525 | goto out_put; |
67cdb40c RD |
1526 | } |
1527 | sg_ind += next->num_sge; | |
1528 | } else | |
1529 | next->sg_list = NULL; | |
1530 | } | |
1531 | ||
1532 | resp.bad_wr = 0; | |
1533 | ret = qp->device->post_send(qp, wr, &bad_wr); | |
1534 | if (ret) | |
1535 | for (next = wr; next; next = next->next) { | |
1536 | ++resp.bad_wr; | |
1537 | if (next == bad_wr) | |
1538 | break; | |
1539 | } | |
1540 | ||
1541 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1542 | &resp, sizeof resp)) | |
1543 | ret = -EFAULT; | |
1544 | ||
9ead190b RD |
1545 | out_put: |
1546 | put_qp_read(qp); | |
67cdb40c RD |
1547 | |
1548 | while (wr) { | |
9ead190b RD |
1549 | if (is_ud && wr->wr.ud.ah) |
1550 | put_ah_read(wr->wr.ud.ah); | |
67cdb40c RD |
1551 | next = wr->next; |
1552 | kfree(wr); | |
1553 | wr = next; | |
1554 | } | |
1555 | ||
18320828 | 1556 | out: |
67cdb40c RD |
1557 | kfree(user_wr); |
1558 | ||
1559 | return ret ? ret : in_len; | |
1560 | } | |
1561 | ||
1562 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
1563 | int in_len, | |
1564 | u32 wr_count, | |
1565 | u32 sge_count, | |
1566 | u32 wqe_size) | |
1567 | { | |
1568 | struct ib_uverbs_recv_wr *user_wr; | |
1569 | struct ib_recv_wr *wr = NULL, *last, *next; | |
1570 | int sg_ind; | |
1571 | int i; | |
1572 | int ret; | |
1573 | ||
1574 | if (in_len < wqe_size * wr_count + | |
1575 | sge_count * sizeof (struct ib_uverbs_sge)) | |
1576 | return ERR_PTR(-EINVAL); | |
1577 | ||
1578 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
1579 | return ERR_PTR(-EINVAL); | |
1580 | ||
1581 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
1582 | if (!user_wr) | |
1583 | return ERR_PTR(-ENOMEM); | |
1584 | ||
1585 | sg_ind = 0; | |
1586 | last = NULL; | |
1587 | for (i = 0; i < wr_count; ++i) { | |
1588 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
1589 | wqe_size)) { | |
1590 | ret = -EFAULT; | |
1591 | goto err; | |
1592 | } | |
1593 | ||
1594 | if (user_wr->num_sge + sg_ind > sge_count) { | |
1595 | ret = -EINVAL; | |
1596 | goto err; | |
1597 | } | |
1598 | ||
1599 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1600 | user_wr->num_sge * sizeof (struct ib_sge), | |
1601 | GFP_KERNEL); | |
1602 | if (!next) { | |
1603 | ret = -ENOMEM; | |
1604 | goto err; | |
1605 | } | |
1606 | ||
1607 | if (!last) | |
1608 | wr = next; | |
1609 | else | |
1610 | last->next = next; | |
1611 | last = next; | |
1612 | ||
1613 | next->next = NULL; | |
1614 | next->wr_id = user_wr->wr_id; | |
1615 | next->num_sge = user_wr->num_sge; | |
1616 | ||
1617 | if (next->num_sge) { | |
1618 | next->sg_list = (void *) next + | |
1619 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1620 | if (copy_from_user(next->sg_list, | |
1621 | buf + wr_count * wqe_size + | |
1622 | sg_ind * sizeof (struct ib_sge), | |
1623 | next->num_sge * sizeof (struct ib_sge))) { | |
1624 | ret = -EFAULT; | |
1625 | goto err; | |
1626 | } | |
1627 | sg_ind += next->num_sge; | |
1628 | } else | |
1629 | next->sg_list = NULL; | |
1630 | } | |
1631 | ||
1632 | kfree(user_wr); | |
1633 | return wr; | |
1634 | ||
1635 | err: | |
1636 | kfree(user_wr); | |
1637 | ||
1638 | while (wr) { | |
1639 | next = wr->next; | |
1640 | kfree(wr); | |
1641 | wr = next; | |
1642 | } | |
1643 | ||
1644 | return ERR_PTR(ret); | |
1645 | } | |
1646 | ||
1647 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1648 | const char __user *buf, int in_len, |
1649 | int out_len) | |
67cdb40c RD |
1650 | { |
1651 | struct ib_uverbs_post_recv cmd; | |
1652 | struct ib_uverbs_post_recv_resp resp; | |
1653 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1654 | struct ib_qp *qp; | |
1655 | ssize_t ret = -EINVAL; | |
1656 | ||
1657 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1658 | return -EFAULT; | |
1659 | ||
1660 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1661 | in_len - sizeof cmd, cmd.wr_count, | |
1662 | cmd.sge_count, cmd.wqe_size); | |
1663 | if (IS_ERR(wr)) | |
1664 | return PTR_ERR(wr); | |
1665 | ||
9ead190b RD |
1666 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1667 | if (!qp) | |
67cdb40c RD |
1668 | goto out; |
1669 | ||
1670 | resp.bad_wr = 0; | |
1671 | ret = qp->device->post_recv(qp, wr, &bad_wr); | |
9ead190b RD |
1672 | |
1673 | put_qp_read(qp); | |
1674 | ||
67cdb40c RD |
1675 | if (ret) |
1676 | for (next = wr; next; next = next->next) { | |
1677 | ++resp.bad_wr; | |
1678 | if (next == bad_wr) | |
1679 | break; | |
1680 | } | |
1681 | ||
67cdb40c RD |
1682 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1683 | &resp, sizeof resp)) | |
1684 | ret = -EFAULT; | |
1685 | ||
1686 | out: | |
67cdb40c RD |
1687 | while (wr) { |
1688 | next = wr->next; | |
1689 | kfree(wr); | |
1690 | wr = next; | |
1691 | } | |
1692 | ||
1693 | return ret ? ret : in_len; | |
1694 | } | |
1695 | ||
1696 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1697 | const char __user *buf, int in_len, |
1698 | int out_len) | |
67cdb40c RD |
1699 | { |
1700 | struct ib_uverbs_post_srq_recv cmd; | |
1701 | struct ib_uverbs_post_srq_recv_resp resp; | |
1702 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1703 | struct ib_srq *srq; | |
1704 | ssize_t ret = -EINVAL; | |
1705 | ||
1706 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1707 | return -EFAULT; | |
1708 | ||
1709 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1710 | in_len - sizeof cmd, cmd.wr_count, | |
1711 | cmd.sge_count, cmd.wqe_size); | |
1712 | if (IS_ERR(wr)) | |
1713 | return PTR_ERR(wr); | |
1714 | ||
9ead190b RD |
1715 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
1716 | if (!srq) | |
67cdb40c RD |
1717 | goto out; |
1718 | ||
1719 | resp.bad_wr = 0; | |
1720 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
1721 | |
1722 | put_srq_read(srq); | |
1723 | ||
67cdb40c RD |
1724 | if (ret) |
1725 | for (next = wr; next; next = next->next) { | |
1726 | ++resp.bad_wr; | |
1727 | if (next == bad_wr) | |
1728 | break; | |
1729 | } | |
1730 | ||
67cdb40c RD |
1731 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1732 | &resp, sizeof resp)) | |
1733 | ret = -EFAULT; | |
1734 | ||
1735 | out: | |
67cdb40c RD |
1736 | while (wr) { |
1737 | next = wr->next; | |
1738 | kfree(wr); | |
1739 | wr = next; | |
1740 | } | |
1741 | ||
1742 | return ret ? ret : in_len; | |
1743 | } | |
1744 | ||
1745 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
1746 | const char __user *buf, int in_len, | |
1747 | int out_len) | |
1748 | { | |
1749 | struct ib_uverbs_create_ah cmd; | |
1750 | struct ib_uverbs_create_ah_resp resp; | |
1751 | struct ib_uobject *uobj; | |
1752 | struct ib_pd *pd; | |
1753 | struct ib_ah *ah; | |
1754 | struct ib_ah_attr attr; | |
1755 | int ret; | |
1756 | ||
1757 | if (out_len < sizeof resp) | |
1758 | return -ENOSPC; | |
1759 | ||
1760 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1761 | return -EFAULT; | |
1762 | ||
1763 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1764 | if (!uobj) | |
1765 | return -ENOMEM; | |
1766 | ||
43db2bc0 | 1767 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_key); |
9ead190b | 1768 | down_write(&uobj->mutex); |
67cdb40c | 1769 | |
9ead190b RD |
1770 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1771 | if (!pd) { | |
67cdb40c | 1772 | ret = -EINVAL; |
9ead190b | 1773 | goto err; |
67cdb40c RD |
1774 | } |
1775 | ||
67cdb40c RD |
1776 | attr.dlid = cmd.attr.dlid; |
1777 | attr.sl = cmd.attr.sl; | |
1778 | attr.src_path_bits = cmd.attr.src_path_bits; | |
1779 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 1780 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
1781 | attr.port_num = cmd.attr.port_num; |
1782 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
1783 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
1784 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
1785 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
1786 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
1787 | ||
1788 | ah = ib_create_ah(pd, &attr); | |
1789 | if (IS_ERR(ah)) { | |
1790 | ret = PTR_ERR(ah); | |
ec924b47 | 1791 | goto err_put; |
67cdb40c RD |
1792 | } |
1793 | ||
9ead190b RD |
1794 | ah->uobject = uobj; |
1795 | uobj->object = ah; | |
67cdb40c | 1796 | |
9ead190b | 1797 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
1798 | if (ret) |
1799 | goto err_destroy; | |
1800 | ||
1801 | resp.ah_handle = uobj->id; | |
1802 | ||
1803 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1804 | &resp, sizeof resp)) { | |
1805 | ret = -EFAULT; | |
9ead190b | 1806 | goto err_copy; |
67cdb40c RD |
1807 | } |
1808 | ||
9ead190b RD |
1809 | put_pd_read(pd); |
1810 | ||
95ed644f | 1811 | mutex_lock(&file->mutex); |
67cdb40c | 1812 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 1813 | mutex_unlock(&file->mutex); |
67cdb40c | 1814 | |
9ead190b RD |
1815 | uobj->live = 1; |
1816 | ||
1817 | up_write(&uobj->mutex); | |
67cdb40c RD |
1818 | |
1819 | return in_len; | |
1820 | ||
9ead190b RD |
1821 | err_copy: |
1822 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
1823 | |
1824 | err_destroy: | |
1825 | ib_destroy_ah(ah); | |
1826 | ||
ec924b47 MT |
1827 | err_put: |
1828 | put_pd_read(pd); | |
1829 | ||
9ead190b RD |
1830 | err: |
1831 | put_uobj_write(uobj); | |
67cdb40c RD |
1832 | return ret; |
1833 | } | |
1834 | ||
1835 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
1836 | const char __user *buf, int in_len, int out_len) | |
1837 | { | |
1838 | struct ib_uverbs_destroy_ah cmd; | |
1839 | struct ib_ah *ah; | |
1840 | struct ib_uobject *uobj; | |
9ead190b | 1841 | int ret; |
67cdb40c RD |
1842 | |
1843 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1844 | return -EFAULT; | |
1845 | ||
9ead190b RD |
1846 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
1847 | if (!uobj) | |
1848 | return -EINVAL; | |
1849 | ah = uobj->object; | |
67cdb40c | 1850 | |
9ead190b RD |
1851 | ret = ib_destroy_ah(ah); |
1852 | if (!ret) | |
1853 | uobj->live = 0; | |
67cdb40c | 1854 | |
9ead190b | 1855 | put_uobj_write(uobj); |
67cdb40c | 1856 | |
67cdb40c | 1857 | if (ret) |
9ead190b | 1858 | return ret; |
67cdb40c | 1859 | |
9ead190b | 1860 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 1861 | |
95ed644f | 1862 | mutex_lock(&file->mutex); |
67cdb40c | 1863 | list_del(&uobj->list); |
95ed644f | 1864 | mutex_unlock(&file->mutex); |
67cdb40c | 1865 | |
9ead190b | 1866 | put_uobj(uobj); |
67cdb40c | 1867 | |
9ead190b | 1868 | return in_len; |
67cdb40c RD |
1869 | } |
1870 | ||
bc38a6ab RD |
1871 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
1872 | const char __user *buf, int in_len, | |
1873 | int out_len) | |
1874 | { | |
1875 | struct ib_uverbs_attach_mcast cmd; | |
1876 | struct ib_qp *qp; | |
9ead190b | 1877 | struct ib_uqp_object *obj; |
f4e40156 | 1878 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 1879 | int ret; |
bc38a6ab RD |
1880 | |
1881 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1882 | return -EFAULT; | |
1883 | ||
9ead190b RD |
1884 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1885 | if (!qp) | |
1886 | return -EINVAL; | |
f4e40156 | 1887 | |
9ead190b | 1888 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 1889 | |
9ead190b | 1890 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
1891 | if (cmd.mlid == mcast->lid && |
1892 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1893 | ret = 0; | |
9ead190b | 1894 | goto out_put; |
f4e40156 JM |
1895 | } |
1896 | ||
1897 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
1898 | if (!mcast) { | |
1899 | ret = -ENOMEM; | |
9ead190b | 1900 | goto out_put; |
f4e40156 JM |
1901 | } |
1902 | ||
1903 | mcast->lid = cmd.mlid; | |
1904 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 1905 | |
f4e40156 | 1906 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
1907 | if (!ret) |
1908 | list_add_tail(&mcast->list, &obj->mcast_list); | |
1909 | else | |
f4e40156 JM |
1910 | kfree(mcast); |
1911 | ||
9ead190b RD |
1912 | out_put: |
1913 | put_qp_read(qp); | |
bc38a6ab RD |
1914 | |
1915 | return ret ? ret : in_len; | |
1916 | } | |
1917 | ||
1918 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
1919 | const char __user *buf, int in_len, | |
1920 | int out_len) | |
1921 | { | |
1922 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 1923 | struct ib_uqp_object *obj; |
bc38a6ab | 1924 | struct ib_qp *qp; |
f4e40156 | 1925 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
1926 | int ret = -EINVAL; |
1927 | ||
1928 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1929 | return -EFAULT; | |
1930 | ||
9ead190b RD |
1931 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1932 | if (!qp) | |
1933 | return -EINVAL; | |
bc38a6ab | 1934 | |
f4e40156 JM |
1935 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
1936 | if (ret) | |
9ead190b | 1937 | goto out_put; |
f4e40156 | 1938 | |
9ead190b | 1939 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 1940 | |
9ead190b | 1941 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
1942 | if (cmd.mlid == mcast->lid && |
1943 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1944 | list_del(&mcast->list); | |
1945 | kfree(mcast); | |
1946 | break; | |
1947 | } | |
1948 | ||
9ead190b RD |
1949 | out_put: |
1950 | put_qp_read(qp); | |
bc38a6ab RD |
1951 | |
1952 | return ret ? ret : in_len; | |
1953 | } | |
f520ba5a RD |
1954 | |
1955 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, | |
1956 | const char __user *buf, int in_len, | |
1957 | int out_len) | |
1958 | { | |
1959 | struct ib_uverbs_create_srq cmd; | |
1960 | struct ib_uverbs_create_srq_resp resp; | |
1961 | struct ib_udata udata; | |
9ead190b | 1962 | struct ib_uevent_object *obj; |
f520ba5a RD |
1963 | struct ib_pd *pd; |
1964 | struct ib_srq *srq; | |
1965 | struct ib_srq_init_attr attr; | |
1966 | int ret; | |
1967 | ||
1968 | if (out_len < sizeof resp) | |
1969 | return -ENOSPC; | |
1970 | ||
1971 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1972 | return -EFAULT; | |
1973 | ||
1974 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1975 | (unsigned long) cmd.response + sizeof resp, | |
1976 | in_len - sizeof cmd, out_len - sizeof resp); | |
1977 | ||
9ead190b RD |
1978 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1979 | if (!obj) | |
f520ba5a RD |
1980 | return -ENOMEM; |
1981 | ||
43db2bc0 | 1982 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &srq_lock_key); |
9ead190b | 1983 | down_write(&obj->uobject.mutex); |
f520ba5a | 1984 | |
9ead190b RD |
1985 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1986 | if (!pd) { | |
f520ba5a | 1987 | ret = -EINVAL; |
9ead190b | 1988 | goto err; |
f520ba5a RD |
1989 | } |
1990 | ||
1991 | attr.event_handler = ib_uverbs_srq_event_handler; | |
1992 | attr.srq_context = file; | |
1993 | attr.attr.max_wr = cmd.max_wr; | |
1994 | attr.attr.max_sge = cmd.max_sge; | |
1995 | attr.attr.srq_limit = cmd.srq_limit; | |
1996 | ||
9ead190b RD |
1997 | obj->events_reported = 0; |
1998 | INIT_LIST_HEAD(&obj->event_list); | |
f520ba5a RD |
1999 | |
2000 | srq = pd->device->create_srq(pd, &attr, &udata); | |
2001 | if (IS_ERR(srq)) { | |
2002 | ret = PTR_ERR(srq); | |
ec924b47 | 2003 | goto err_put; |
f520ba5a RD |
2004 | } |
2005 | ||
2006 | srq->device = pd->device; | |
2007 | srq->pd = pd; | |
9ead190b | 2008 | srq->uobject = &obj->uobject; |
f520ba5a RD |
2009 | srq->event_handler = attr.event_handler; |
2010 | srq->srq_context = attr.srq_context; | |
2011 | atomic_inc(&pd->usecnt); | |
2012 | atomic_set(&srq->usecnt, 0); | |
2013 | ||
9ead190b RD |
2014 | obj->uobject.object = srq; |
2015 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uobject); | |
f520ba5a RD |
2016 | if (ret) |
2017 | goto err_destroy; | |
2018 | ||
9ead190b RD |
2019 | memset(&resp, 0, sizeof resp); |
2020 | resp.srq_handle = obj->uobject.id; | |
ea88fd16 DB |
2021 | resp.max_wr = attr.attr.max_wr; |
2022 | resp.max_sge = attr.attr.max_sge; | |
f520ba5a | 2023 | |
f520ba5a RD |
2024 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2025 | &resp, sizeof resp)) { | |
2026 | ret = -EFAULT; | |
9ead190b | 2027 | goto err_copy; |
f520ba5a RD |
2028 | } |
2029 | ||
9ead190b RD |
2030 | put_pd_read(pd); |
2031 | ||
95ed644f | 2032 | mutex_lock(&file->mutex); |
9ead190b | 2033 | list_add_tail(&obj->uobject.list, &file->ucontext->srq_list); |
95ed644f | 2034 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 2035 | |
9ead190b RD |
2036 | obj->uobject.live = 1; |
2037 | ||
2038 | up_write(&obj->uobject.mutex); | |
f520ba5a RD |
2039 | |
2040 | return in_len; | |
2041 | ||
9ead190b RD |
2042 | err_copy: |
2043 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uobject); | |
f520ba5a RD |
2044 | |
2045 | err_destroy: | |
2046 | ib_destroy_srq(srq); | |
2047 | ||
ec924b47 MT |
2048 | err_put: |
2049 | put_pd_read(pd); | |
2050 | ||
9ead190b RD |
2051 | err: |
2052 | put_uobj_write(&obj->uobject); | |
f520ba5a RD |
2053 | return ret; |
2054 | } | |
2055 | ||
2056 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, | |
2057 | const char __user *buf, int in_len, | |
2058 | int out_len) | |
2059 | { | |
2060 | struct ib_uverbs_modify_srq cmd; | |
9bc57e2d | 2061 | struct ib_udata udata; |
f520ba5a RD |
2062 | struct ib_srq *srq; |
2063 | struct ib_srq_attr attr; | |
2064 | int ret; | |
2065 | ||
2066 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2067 | return -EFAULT; | |
2068 | ||
9bc57e2d RC |
2069 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
2070 | out_len); | |
2071 | ||
9ead190b RD |
2072 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2073 | if (!srq) | |
2074 | return -EINVAL; | |
f520ba5a RD |
2075 | |
2076 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
2077 | attr.srq_limit = cmd.srq_limit; |
2078 | ||
9bc57e2d | 2079 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
f520ba5a | 2080 | |
9ead190b | 2081 | put_srq_read(srq); |
f520ba5a RD |
2082 | |
2083 | return ret ? ret : in_len; | |
2084 | } | |
2085 | ||
8bdb0e86 DB |
2086 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
2087 | const char __user *buf, | |
2088 | int in_len, int out_len) | |
2089 | { | |
2090 | struct ib_uverbs_query_srq cmd; | |
2091 | struct ib_uverbs_query_srq_resp resp; | |
2092 | struct ib_srq_attr attr; | |
2093 | struct ib_srq *srq; | |
2094 | int ret; | |
2095 | ||
2096 | if (out_len < sizeof resp) | |
2097 | return -ENOSPC; | |
2098 | ||
2099 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2100 | return -EFAULT; | |
2101 | ||
9ead190b RD |
2102 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2103 | if (!srq) | |
2104 | return -EINVAL; | |
8bdb0e86 | 2105 | |
9ead190b | 2106 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 2107 | |
9ead190b | 2108 | put_srq_read(srq); |
8bdb0e86 DB |
2109 | |
2110 | if (ret) | |
9ead190b | 2111 | return ret; |
8bdb0e86 DB |
2112 | |
2113 | memset(&resp, 0, sizeof resp); | |
2114 | ||
2115 | resp.max_wr = attr.max_wr; | |
2116 | resp.max_sge = attr.max_sge; | |
2117 | resp.srq_limit = attr.srq_limit; | |
2118 | ||
2119 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2120 | &resp, sizeof resp)) | |
9ead190b | 2121 | return -EFAULT; |
8bdb0e86 | 2122 | |
9ead190b | 2123 | return in_len; |
8bdb0e86 DB |
2124 | } |
2125 | ||
f520ba5a RD |
2126 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
2127 | const char __user *buf, int in_len, | |
2128 | int out_len) | |
2129 | { | |
63aaf647 RD |
2130 | struct ib_uverbs_destroy_srq cmd; |
2131 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 2132 | struct ib_uobject *uobj; |
63aaf647 | 2133 | struct ib_srq *srq; |
9ead190b | 2134 | struct ib_uevent_object *obj; |
63aaf647 | 2135 | int ret = -EINVAL; |
f520ba5a RD |
2136 | |
2137 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2138 | return -EFAULT; | |
2139 | ||
9ead190b RD |
2140 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
2141 | if (!uobj) | |
2142 | return -EINVAL; | |
2143 | srq = uobj->object; | |
2144 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
63aaf647 | 2145 | |
9ead190b RD |
2146 | ret = ib_destroy_srq(srq); |
2147 | if (!ret) | |
2148 | uobj->live = 0; | |
f520ba5a | 2149 | |
9ead190b | 2150 | put_uobj_write(uobj); |
f520ba5a | 2151 | |
f520ba5a | 2152 | if (ret) |
9ead190b | 2153 | return ret; |
f520ba5a | 2154 | |
9ead190b | 2155 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 2156 | |
95ed644f | 2157 | mutex_lock(&file->mutex); |
9ead190b | 2158 | list_del(&uobj->list); |
95ed644f | 2159 | mutex_unlock(&file->mutex); |
f520ba5a | 2160 | |
9ead190b | 2161 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 2162 | |
9ead190b RD |
2163 | memset(&resp, 0, sizeof resp); |
2164 | resp.events_reported = obj->events_reported; | |
63aaf647 | 2165 | |
9ead190b | 2166 | put_uobj(uobj); |
f520ba5a | 2167 | |
63aaf647 RD |
2168 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2169 | &resp, sizeof resp)) | |
2170 | ret = -EFAULT; | |
2171 | ||
f520ba5a RD |
2172 | return ret ? ret : in_len; |
2173 | } |