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bc38a6ab RD |
1 | /* |
2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. | |
f7c6a7b5 | 3 | * Copyright (c) 2005, 2006, 2007 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); | |
f7c6a7b5 | 298 | ucontext->closing = 0; |
bc38a6ab | 299 | |
6b73597e RD |
300 | resp.num_comp_vectors = file->device->num_comp_vectors; |
301 | ||
302 | filp = ib_uverbs_alloc_event_file(file, 1, &resp.async_fd); | |
303 | if (IS_ERR(filp)) { | |
304 | ret = PTR_ERR(filp); | |
305 | goto err_free; | |
306 | } | |
bc38a6ab RD |
307 | |
308 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
309 | &resp, sizeof resp)) { |
310 | ret = -EFAULT; | |
6b73597e | 311 | goto err_file; |
63c47c28 RD |
312 | } |
313 | ||
6b73597e RD |
314 | file->async_file = filp->private_data; |
315 | ||
316 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
317 | ib_uverbs_event_handler); | |
318 | ret = ib_register_event_handler(&file->event_handler); | |
319 | if (ret) | |
320 | goto err_file; | |
321 | ||
322 | kref_get(&file->async_file->ref); | |
323 | kref_get(&file->ref); | |
70a30e16 | 324 | file->ucontext = ucontext; |
6b73597e RD |
325 | |
326 | fd_install(resp.async_fd, filp); | |
327 | ||
95ed644f | 328 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
329 | |
330 | return in_len; | |
331 | ||
6b73597e RD |
332 | err_file: |
333 | put_unused_fd(resp.async_fd); | |
334 | fput(filp); | |
335 | ||
63c47c28 RD |
336 | err_free: |
337 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 338 | |
63c47c28 | 339 | err: |
95ed644f | 340 | mutex_unlock(&file->mutex); |
63c47c28 | 341 | return ret; |
bc38a6ab RD |
342 | } |
343 | ||
344 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
345 | const char __user *buf, | |
346 | int in_len, int out_len) | |
347 | { | |
348 | struct ib_uverbs_query_device cmd; | |
349 | struct ib_uverbs_query_device_resp resp; | |
350 | struct ib_device_attr attr; | |
351 | int ret; | |
352 | ||
353 | if (out_len < sizeof resp) | |
354 | return -ENOSPC; | |
355 | ||
356 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
357 | return -EFAULT; | |
358 | ||
359 | ret = ib_query_device(file->device->ib_dev, &attr); | |
360 | if (ret) | |
361 | return ret; | |
362 | ||
363 | memset(&resp, 0, sizeof resp); | |
364 | ||
365 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 366 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
367 | resp.sys_image_guid = attr.sys_image_guid; |
368 | resp.max_mr_size = attr.max_mr_size; | |
369 | resp.page_size_cap = attr.page_size_cap; | |
370 | resp.vendor_id = attr.vendor_id; | |
371 | resp.vendor_part_id = attr.vendor_part_id; | |
372 | resp.hw_ver = attr.hw_ver; | |
373 | resp.max_qp = attr.max_qp; | |
374 | resp.max_qp_wr = attr.max_qp_wr; | |
375 | resp.device_cap_flags = attr.device_cap_flags; | |
376 | resp.max_sge = attr.max_sge; | |
377 | resp.max_sge_rd = attr.max_sge_rd; | |
378 | resp.max_cq = attr.max_cq; | |
379 | resp.max_cqe = attr.max_cqe; | |
380 | resp.max_mr = attr.max_mr; | |
381 | resp.max_pd = attr.max_pd; | |
382 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
383 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
384 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
385 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
386 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
387 | resp.atomic_cap = attr.atomic_cap; | |
388 | resp.max_ee = attr.max_ee; | |
389 | resp.max_rdd = attr.max_rdd; | |
390 | resp.max_mw = attr.max_mw; | |
391 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
392 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
393 | resp.max_mcast_grp = attr.max_mcast_grp; | |
394 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
395 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
396 | resp.max_ah = attr.max_ah; | |
397 | resp.max_fmr = attr.max_fmr; | |
398 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
399 | resp.max_srq = attr.max_srq; | |
400 | resp.max_srq_wr = attr.max_srq_wr; | |
401 | resp.max_srq_sge = attr.max_srq_sge; | |
402 | resp.max_pkeys = attr.max_pkeys; | |
403 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
404 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
405 | ||
406 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
407 | &resp, sizeof resp)) | |
408 | return -EFAULT; | |
409 | ||
410 | return in_len; | |
411 | } | |
412 | ||
413 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
414 | const char __user *buf, | |
415 | int in_len, int out_len) | |
416 | { | |
417 | struct ib_uverbs_query_port cmd; | |
418 | struct ib_uverbs_query_port_resp resp; | |
419 | struct ib_port_attr attr; | |
420 | int ret; | |
421 | ||
422 | if (out_len < sizeof resp) | |
423 | return -ENOSPC; | |
424 | ||
425 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
426 | return -EFAULT; | |
427 | ||
428 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
429 | if (ret) | |
430 | return ret; | |
431 | ||
432 | memset(&resp, 0, sizeof resp); | |
433 | ||
434 | resp.state = attr.state; | |
435 | resp.max_mtu = attr.max_mtu; | |
436 | resp.active_mtu = attr.active_mtu; | |
437 | resp.gid_tbl_len = attr.gid_tbl_len; | |
438 | resp.port_cap_flags = attr.port_cap_flags; | |
439 | resp.max_msg_sz = attr.max_msg_sz; | |
440 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
441 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
442 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
443 | resp.lid = attr.lid; | |
444 | resp.sm_lid = attr.sm_lid; | |
445 | resp.lmc = attr.lmc; | |
446 | resp.max_vl_num = attr.max_vl_num; | |
447 | resp.sm_sl = attr.sm_sl; | |
448 | resp.subnet_timeout = attr.subnet_timeout; | |
449 | resp.init_type_reply = attr.init_type_reply; | |
450 | resp.active_width = attr.active_width; | |
451 | resp.active_speed = attr.active_speed; | |
452 | resp.phys_state = attr.phys_state; | |
453 | ||
454 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
455 | &resp, sizeof resp)) | |
456 | return -EFAULT; | |
457 | ||
458 | return in_len; | |
459 | } | |
460 | ||
bc38a6ab RD |
461 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
462 | const char __user *buf, | |
463 | int in_len, int out_len) | |
464 | { | |
465 | struct ib_uverbs_alloc_pd cmd; | |
466 | struct ib_uverbs_alloc_pd_resp resp; | |
467 | struct ib_udata udata; | |
468 | struct ib_uobject *uobj; | |
469 | struct ib_pd *pd; | |
470 | int ret; | |
471 | ||
472 | if (out_len < sizeof resp) | |
473 | return -ENOSPC; | |
474 | ||
475 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
476 | return -EFAULT; | |
477 | ||
478 | INIT_UDATA(&udata, buf + sizeof cmd, | |
479 | (unsigned long) cmd.response + sizeof resp, | |
480 | in_len - sizeof cmd, out_len - sizeof resp); | |
481 | ||
482 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
483 | if (!uobj) | |
484 | return -ENOMEM; | |
485 | ||
43db2bc0 | 486 | init_uobj(uobj, 0, file->ucontext, &pd_lock_key); |
9ead190b | 487 | down_write(&uobj->mutex); |
bc38a6ab RD |
488 | |
489 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
490 | file->ucontext, &udata); | |
491 | if (IS_ERR(pd)) { | |
492 | ret = PTR_ERR(pd); | |
493 | goto err; | |
494 | } | |
495 | ||
496 | pd->device = file->device->ib_dev; | |
497 | pd->uobject = uobj; | |
498 | atomic_set(&pd->usecnt, 0); | |
499 | ||
9ead190b RD |
500 | uobj->object = pd; |
501 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 502 | if (ret) |
9ead190b | 503 | goto err_idr; |
bc38a6ab RD |
504 | |
505 | memset(&resp, 0, sizeof resp); | |
506 | resp.pd_handle = uobj->id; | |
507 | ||
508 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
509 | &resp, sizeof resp)) { | |
510 | ret = -EFAULT; | |
9ead190b | 511 | goto err_copy; |
bc38a6ab RD |
512 | } |
513 | ||
95ed644f | 514 | mutex_lock(&file->mutex); |
eb9d3cd5 | 515 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 516 | mutex_unlock(&file->mutex); |
bc38a6ab | 517 | |
9ead190b RD |
518 | uobj->live = 1; |
519 | ||
520 | up_write(&uobj->mutex); | |
bc38a6ab | 521 | |
eb9d3cd5 RD |
522 | return in_len; |
523 | ||
9ead190b RD |
524 | err_copy: |
525 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 526 | |
9ead190b | 527 | err_idr: |
bc38a6ab RD |
528 | ib_dealloc_pd(pd); |
529 | ||
530 | err: | |
9ead190b | 531 | put_uobj_write(uobj); |
bc38a6ab RD |
532 | return ret; |
533 | } | |
534 | ||
535 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
536 | const char __user *buf, | |
537 | int in_len, int out_len) | |
538 | { | |
539 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 540 | struct ib_uobject *uobj; |
9ead190b | 541 | int ret; |
bc38a6ab RD |
542 | |
543 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
544 | return -EFAULT; | |
545 | ||
9ead190b RD |
546 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
547 | if (!uobj) | |
548 | return -EINVAL; | |
bc38a6ab | 549 | |
9ead190b RD |
550 | ret = ib_dealloc_pd(uobj->object); |
551 | if (!ret) | |
552 | uobj->live = 0; | |
bc38a6ab | 553 | |
9ead190b | 554 | put_uobj_write(uobj); |
bc38a6ab | 555 | |
bc38a6ab | 556 | if (ret) |
9ead190b | 557 | return ret; |
bc38a6ab | 558 | |
9ead190b | 559 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 560 | |
95ed644f | 561 | mutex_lock(&file->mutex); |
bc38a6ab | 562 | list_del(&uobj->list); |
95ed644f | 563 | mutex_unlock(&file->mutex); |
bc38a6ab | 564 | |
9ead190b | 565 | put_uobj(uobj); |
bc38a6ab | 566 | |
9ead190b | 567 | return in_len; |
bc38a6ab RD |
568 | } |
569 | ||
570 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, | |
571 | const char __user *buf, int in_len, | |
572 | int out_len) | |
573 | { | |
574 | struct ib_uverbs_reg_mr cmd; | |
575 | struct ib_uverbs_reg_mr_resp resp; | |
576 | struct ib_udata udata; | |
f7c6a7b5 | 577 | struct ib_uobject *uobj; |
bc38a6ab RD |
578 | struct ib_pd *pd; |
579 | struct ib_mr *mr; | |
580 | int ret; | |
581 | ||
582 | if (out_len < sizeof resp) | |
583 | return -ENOSPC; | |
584 | ||
585 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
586 | return -EFAULT; | |
587 | ||
588 | INIT_UDATA(&udata, buf + sizeof cmd, | |
589 | (unsigned long) cmd.response + sizeof resp, | |
590 | in_len - sizeof cmd, out_len - sizeof resp); | |
591 | ||
592 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
593 | return -EINVAL; | |
594 | ||
f575394f RD |
595 | /* |
596 | * Local write permission is required if remote write or | |
597 | * remote atomic permission is also requested. | |
598 | */ | |
599 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
600 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) | |
601 | return -EINVAL; | |
602 | ||
f7c6a7b5 RD |
603 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
604 | if (!uobj) | |
bc38a6ab RD |
605 | return -ENOMEM; |
606 | ||
f7c6a7b5 RD |
607 | init_uobj(uobj, 0, file->ucontext, &mr_lock_key); |
608 | down_write(&uobj->mutex); | |
bc38a6ab | 609 | |
9ead190b | 610 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
aaf1aef5 RD |
611 | if (!pd) { |
612 | ret = -EINVAL; | |
f7c6a7b5 | 613 | goto err_free; |
aaf1aef5 | 614 | } |
bc38a6ab | 615 | |
f7c6a7b5 RD |
616 | mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
617 | cmd.access_flags, &udata); | |
bc38a6ab RD |
618 | if (IS_ERR(mr)) { |
619 | ret = PTR_ERR(mr); | |
9ead190b | 620 | goto err_put; |
bc38a6ab RD |
621 | } |
622 | ||
623 | mr->device = pd->device; | |
624 | mr->pd = pd; | |
f7c6a7b5 | 625 | mr->uobject = uobj; |
bc38a6ab RD |
626 | atomic_inc(&pd->usecnt); |
627 | atomic_set(&mr->usecnt, 0); | |
628 | ||
f7c6a7b5 RD |
629 | uobj->object = mr; |
630 | ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); | |
bc38a6ab RD |
631 | if (ret) |
632 | goto err_unreg; | |
633 | ||
9ead190b RD |
634 | memset(&resp, 0, sizeof resp); |
635 | resp.lkey = mr->lkey; | |
636 | resp.rkey = mr->rkey; | |
f7c6a7b5 | 637 | resp.mr_handle = uobj->id; |
bc38a6ab | 638 | |
bc38a6ab RD |
639 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
640 | &resp, sizeof resp)) { | |
641 | ret = -EFAULT; | |
9ead190b | 642 | goto err_copy; |
bc38a6ab RD |
643 | } |
644 | ||
9ead190b RD |
645 | put_pd_read(pd); |
646 | ||
95ed644f | 647 | mutex_lock(&file->mutex); |
f7c6a7b5 | 648 | list_add_tail(&uobj->list, &file->ucontext->mr_list); |
95ed644f | 649 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 650 | |
f7c6a7b5 | 651 | uobj->live = 1; |
9ead190b | 652 | |
f7c6a7b5 | 653 | up_write(&uobj->mutex); |
bc38a6ab RD |
654 | |
655 | return in_len; | |
656 | ||
9ead190b | 657 | err_copy: |
f7c6a7b5 | 658 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab RD |
659 | |
660 | err_unreg: | |
661 | ib_dereg_mr(mr); | |
662 | ||
9ead190b RD |
663 | err_put: |
664 | put_pd_read(pd); | |
bc38a6ab | 665 | |
bc38a6ab | 666 | err_free: |
f7c6a7b5 | 667 | put_uobj_write(uobj); |
bc38a6ab RD |
668 | return ret; |
669 | } | |
670 | ||
671 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
672 | const char __user *buf, int in_len, | |
673 | int out_len) | |
674 | { | |
675 | struct ib_uverbs_dereg_mr cmd; | |
676 | struct ib_mr *mr; | |
9ead190b | 677 | struct ib_uobject *uobj; |
bc38a6ab RD |
678 | int ret = -EINVAL; |
679 | ||
680 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
681 | return -EFAULT; | |
682 | ||
9ead190b RD |
683 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
684 | if (!uobj) | |
685 | return -EINVAL; | |
bc38a6ab | 686 | |
f7c6a7b5 | 687 | mr = uobj->object; |
bc38a6ab RD |
688 | |
689 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
690 | if (!ret) |
691 | uobj->live = 0; | |
692 | ||
693 | put_uobj_write(uobj); | |
694 | ||
bc38a6ab | 695 | if (ret) |
9ead190b | 696 | return ret; |
bc38a6ab | 697 | |
9ead190b | 698 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 699 | |
95ed644f | 700 | mutex_lock(&file->mutex); |
9ead190b | 701 | list_del(&uobj->list); |
95ed644f | 702 | mutex_unlock(&file->mutex); |
bc38a6ab | 703 | |
9ead190b | 704 | put_uobj(uobj); |
bc38a6ab | 705 | |
9ead190b | 706 | return in_len; |
bc38a6ab RD |
707 | } |
708 | ||
6b73597e RD |
709 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
710 | const char __user *buf, int in_len, | |
711 | int out_len) | |
712 | { | |
713 | struct ib_uverbs_create_comp_channel cmd; | |
714 | struct ib_uverbs_create_comp_channel_resp resp; | |
715 | struct file *filp; | |
716 | ||
717 | if (out_len < sizeof resp) | |
718 | return -ENOSPC; | |
719 | ||
720 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
721 | return -EFAULT; | |
722 | ||
723 | filp = ib_uverbs_alloc_event_file(file, 0, &resp.fd); | |
724 | if (IS_ERR(filp)) | |
725 | return PTR_ERR(filp); | |
726 | ||
727 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
728 | &resp, sizeof resp)) { | |
729 | put_unused_fd(resp.fd); | |
730 | fput(filp); | |
731 | return -EFAULT; | |
732 | } | |
733 | ||
734 | fd_install(resp.fd, filp); | |
735 | return in_len; | |
736 | } | |
737 | ||
bc38a6ab RD |
738 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
739 | const char __user *buf, int in_len, | |
740 | int out_len) | |
741 | { | |
742 | struct ib_uverbs_create_cq cmd; | |
743 | struct ib_uverbs_create_cq_resp resp; | |
744 | struct ib_udata udata; | |
9ead190b | 745 | struct ib_ucq_object *obj; |
6b73597e | 746 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
747 | struct ib_cq *cq; |
748 | int ret; | |
749 | ||
750 | if (out_len < sizeof resp) | |
751 | return -ENOSPC; | |
752 | ||
753 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
754 | return -EFAULT; | |
755 | ||
756 | INIT_UDATA(&udata, buf + sizeof cmd, | |
757 | (unsigned long) cmd.response + sizeof resp, | |
758 | in_len - sizeof cmd, out_len - sizeof resp); | |
759 | ||
6b73597e | 760 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
bc38a6ab RD |
761 | return -EINVAL; |
762 | ||
9ead190b RD |
763 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
764 | if (!obj) | |
bc38a6ab RD |
765 | return -ENOMEM; |
766 | ||
43db2bc0 | 767 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &cq_lock_key); |
9ead190b RD |
768 | down_write(&obj->uobject.mutex); |
769 | ||
ac4e7b35 JM |
770 | if (cmd.comp_channel >= 0) { |
771 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); | |
772 | if (!ev_file) { | |
773 | ret = -EINVAL; | |
774 | goto err; | |
775 | } | |
776 | } | |
777 | ||
9ead190b RD |
778 | obj->uverbs_file = file; |
779 | obj->comp_events_reported = 0; | |
780 | obj->async_events_reported = 0; | |
781 | INIT_LIST_HEAD(&obj->comp_list); | |
782 | INIT_LIST_HEAD(&obj->async_list); | |
bc38a6ab RD |
783 | |
784 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, | |
f4fd0b22 | 785 | cmd.comp_vector, |
bc38a6ab RD |
786 | file->ucontext, &udata); |
787 | if (IS_ERR(cq)) { | |
788 | ret = PTR_ERR(cq); | |
9ead190b | 789 | goto err_file; |
bc38a6ab RD |
790 | } |
791 | ||
792 | cq->device = file->device->ib_dev; | |
9ead190b | 793 | cq->uobject = &obj->uobject; |
bc38a6ab RD |
794 | cq->comp_handler = ib_uverbs_comp_handler; |
795 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 796 | cq->cq_context = ev_file; |
bc38a6ab RD |
797 | atomic_set(&cq->usecnt, 0); |
798 | ||
9ead190b RD |
799 | obj->uobject.object = cq; |
800 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
bc38a6ab | 801 | if (ret) |
9ead190b | 802 | goto err_free; |
bc38a6ab RD |
803 | |
804 | memset(&resp, 0, sizeof resp); | |
9ead190b | 805 | resp.cq_handle = obj->uobject.id; |
bc38a6ab RD |
806 | resp.cqe = cq->cqe; |
807 | ||
808 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
809 | &resp, sizeof resp)) { | |
810 | ret = -EFAULT; | |
9ead190b | 811 | goto err_copy; |
bc38a6ab RD |
812 | } |
813 | ||
95ed644f | 814 | mutex_lock(&file->mutex); |
9ead190b | 815 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 816 | mutex_unlock(&file->mutex); |
bc38a6ab | 817 | |
9ead190b RD |
818 | obj->uobject.live = 1; |
819 | ||
820 | up_write(&obj->uobject.mutex); | |
bc38a6ab | 821 | |
eb9d3cd5 RD |
822 | return in_len; |
823 | ||
9ead190b RD |
824 | err_copy: |
825 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
eb9d3cd5 | 826 | |
9ead190b | 827 | err_free: |
bc38a6ab RD |
828 | ib_destroy_cq(cq); |
829 | ||
9ead190b | 830 | err_file: |
ac4e7b35 | 831 | if (ev_file) |
9ead190b RD |
832 | ib_uverbs_release_ucq(file, ev_file, obj); |
833 | ||
834 | err: | |
835 | put_uobj_write(&obj->uobject); | |
bc38a6ab RD |
836 | return ret; |
837 | } | |
838 | ||
33b9b3ee RD |
839 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
840 | const char __user *buf, int in_len, | |
841 | int out_len) | |
842 | { | |
843 | struct ib_uverbs_resize_cq cmd; | |
844 | struct ib_uverbs_resize_cq_resp resp; | |
845 | struct ib_udata udata; | |
846 | struct ib_cq *cq; | |
847 | int ret = -EINVAL; | |
848 | ||
849 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
850 | return -EFAULT; | |
851 | ||
852 | INIT_UDATA(&udata, buf + sizeof cmd, | |
853 | (unsigned long) cmd.response + sizeof resp, | |
854 | in_len - sizeof cmd, out_len - sizeof resp); | |
855 | ||
1ccf6aa1 | 856 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
9ead190b RD |
857 | if (!cq) |
858 | return -EINVAL; | |
33b9b3ee RD |
859 | |
860 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
861 | if (ret) | |
862 | goto out; | |
863 | ||
33b9b3ee RD |
864 | resp.cqe = cq->cqe; |
865 | ||
866 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
64f817ba | 867 | &resp, sizeof resp.cqe)) |
33b9b3ee RD |
868 | ret = -EFAULT; |
869 | ||
870 | out: | |
9ead190b | 871 | put_cq_read(cq); |
33b9b3ee RD |
872 | |
873 | return ret ? ret : in_len; | |
874 | } | |
875 | ||
67cdb40c RD |
876 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
877 | const char __user *buf, int in_len, | |
878 | int out_len) | |
879 | { | |
880 | struct ib_uverbs_poll_cq cmd; | |
881 | struct ib_uverbs_poll_cq_resp *resp; | |
882 | struct ib_cq *cq; | |
883 | struct ib_wc *wc; | |
884 | int ret = 0; | |
885 | int i; | |
886 | int rsize; | |
887 | ||
888 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
889 | return -EFAULT; | |
890 | ||
891 | wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL); | |
892 | if (!wc) | |
893 | return -ENOMEM; | |
894 | ||
895 | rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc); | |
896 | resp = kmalloc(rsize, GFP_KERNEL); | |
897 | if (!resp) { | |
898 | ret = -ENOMEM; | |
899 | goto out_wc; | |
900 | } | |
901 | ||
1ccf6aa1 | 902 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 903 | if (!cq) { |
67cdb40c RD |
904 | ret = -EINVAL; |
905 | goto out; | |
906 | } | |
907 | ||
908 | resp->count = ib_poll_cq(cq, cmd.ne, wc); | |
909 | ||
ab108676 | 910 | put_cq_read(cq); |
9ead190b | 911 | |
67cdb40c RD |
912 | for (i = 0; i < resp->count; i++) { |
913 | resp->wc[i].wr_id = wc[i].wr_id; | |
914 | resp->wc[i].status = wc[i].status; | |
915 | resp->wc[i].opcode = wc[i].opcode; | |
916 | resp->wc[i].vendor_err = wc[i].vendor_err; | |
917 | resp->wc[i].byte_len = wc[i].byte_len; | |
77369ed3 | 918 | resp->wc[i].imm_data = (__u32 __force) wc[i].imm_data; |
062dbb69 | 919 | resp->wc[i].qp_num = wc[i].qp->qp_num; |
67cdb40c RD |
920 | resp->wc[i].src_qp = wc[i].src_qp; |
921 | resp->wc[i].wc_flags = wc[i].wc_flags; | |
922 | resp->wc[i].pkey_index = wc[i].pkey_index; | |
923 | resp->wc[i].slid = wc[i].slid; | |
924 | resp->wc[i].sl = wc[i].sl; | |
925 | resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits; | |
926 | resp->wc[i].port_num = wc[i].port_num; | |
927 | } | |
928 | ||
929 | if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize)) | |
930 | ret = -EFAULT; | |
931 | ||
932 | out: | |
67cdb40c RD |
933 | kfree(resp); |
934 | ||
935 | out_wc: | |
936 | kfree(wc); | |
937 | return ret ? ret : in_len; | |
938 | } | |
939 | ||
940 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
941 | const char __user *buf, int in_len, | |
942 | int out_len) | |
943 | { | |
944 | struct ib_uverbs_req_notify_cq cmd; | |
945 | struct ib_cq *cq; | |
67cdb40c RD |
946 | |
947 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
948 | return -EFAULT; | |
949 | ||
1ccf6aa1 | 950 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 951 | if (!cq) |
9ead190b | 952 | return -EINVAL; |
67cdb40c | 953 | |
9ead190b RD |
954 | ib_req_notify_cq(cq, cmd.solicited_only ? |
955 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
956 | ||
ab108676 | 957 | put_cq_read(cq); |
9ead190b RD |
958 | |
959 | return in_len; | |
67cdb40c RD |
960 | } |
961 | ||
bc38a6ab RD |
962 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
963 | const char __user *buf, int in_len, | |
964 | int out_len) | |
965 | { | |
63aaf647 RD |
966 | struct ib_uverbs_destroy_cq cmd; |
967 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 968 | struct ib_uobject *uobj; |
63aaf647 | 969 | struct ib_cq *cq; |
9ead190b | 970 | struct ib_ucq_object *obj; |
6b73597e | 971 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 972 | int ret = -EINVAL; |
bc38a6ab RD |
973 | |
974 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
975 | return -EFAULT; | |
976 | ||
9ead190b RD |
977 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
978 | if (!uobj) | |
979 | return -EINVAL; | |
980 | cq = uobj->object; | |
981 | ev_file = cq->cq_context; | |
982 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 983 | |
9ead190b RD |
984 | ret = ib_destroy_cq(cq); |
985 | if (!ret) | |
986 | uobj->live = 0; | |
bc38a6ab | 987 | |
9ead190b | 988 | put_uobj_write(uobj); |
bc38a6ab | 989 | |
bc38a6ab | 990 | if (ret) |
9ead190b | 991 | return ret; |
bc38a6ab | 992 | |
9ead190b | 993 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 994 | |
95ed644f | 995 | mutex_lock(&file->mutex); |
9ead190b | 996 | list_del(&uobj->list); |
95ed644f | 997 | mutex_unlock(&file->mutex); |
bc38a6ab | 998 | |
9ead190b | 999 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1000 | |
9ead190b RD |
1001 | memset(&resp, 0, sizeof resp); |
1002 | resp.comp_events_reported = obj->comp_events_reported; | |
1003 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1004 | |
9ead190b | 1005 | put_uobj(uobj); |
bc38a6ab | 1006 | |
63aaf647 RD |
1007 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1008 | &resp, sizeof resp)) | |
9ead190b | 1009 | return -EFAULT; |
bc38a6ab | 1010 | |
9ead190b | 1011 | return in_len; |
bc38a6ab RD |
1012 | } |
1013 | ||
1014 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
1015 | const char __user *buf, int in_len, | |
1016 | int out_len) | |
1017 | { | |
1018 | struct ib_uverbs_create_qp cmd; | |
1019 | struct ib_uverbs_create_qp_resp resp; | |
1020 | struct ib_udata udata; | |
9ead190b | 1021 | struct ib_uqp_object *obj; |
bc38a6ab RD |
1022 | struct ib_pd *pd; |
1023 | struct ib_cq *scq, *rcq; | |
f520ba5a | 1024 | struct ib_srq *srq; |
bc38a6ab RD |
1025 | struct ib_qp *qp; |
1026 | struct ib_qp_init_attr attr; | |
1027 | int ret; | |
1028 | ||
1029 | if (out_len < sizeof resp) | |
1030 | return -ENOSPC; | |
1031 | ||
1032 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1033 | return -EFAULT; | |
1034 | ||
1035 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1036 | (unsigned long) cmd.response + sizeof resp, | |
1037 | in_len - sizeof cmd, out_len - sizeof resp); | |
1038 | ||
9ead190b RD |
1039 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1040 | if (!obj) | |
bc38a6ab RD |
1041 | return -ENOMEM; |
1042 | ||
43db2bc0 | 1043 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_key); |
9ead190b | 1044 | down_write(&obj->uevent.uobject.mutex); |
bc38a6ab | 1045 | |
43db2bc0 | 1046 | srq = cmd.is_srq ? idr_read_srq(cmd.srq_handle, file->ucontext) : NULL; |
9ead190b | 1047 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1ccf6aa1 | 1048 | scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, 0); |
43db2bc0 | 1049 | rcq = cmd.recv_cq_handle == cmd.send_cq_handle ? |
1ccf6aa1 | 1050 | scq : idr_read_cq(cmd.recv_cq_handle, file->ucontext, 1); |
bc38a6ab | 1051 | |
9ead190b | 1052 | if (!pd || !scq || !rcq || (cmd.is_srq && !srq)) { |
bc38a6ab | 1053 | ret = -EINVAL; |
9ead190b | 1054 | goto err_put; |
bc38a6ab RD |
1055 | } |
1056 | ||
1057 | attr.event_handler = ib_uverbs_qp_event_handler; | |
1058 | attr.qp_context = file; | |
1059 | attr.send_cq = scq; | |
1060 | attr.recv_cq = rcq; | |
f520ba5a | 1061 | attr.srq = srq; |
bc38a6ab RD |
1062 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
1063 | attr.qp_type = cmd.qp_type; | |
1064 | ||
1065 | attr.cap.max_send_wr = cmd.max_send_wr; | |
1066 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
1067 | attr.cap.max_send_sge = cmd.max_send_sge; | |
1068 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
1069 | attr.cap.max_inline_data = cmd.max_inline_data; | |
1070 | ||
9ead190b RD |
1071 | obj->uevent.events_reported = 0; |
1072 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1073 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab RD |
1074 | |
1075 | qp = pd->device->create_qp(pd, &attr, &udata); | |
1076 | if (IS_ERR(qp)) { | |
1077 | ret = PTR_ERR(qp); | |
9ead190b | 1078 | goto err_put; |
bc38a6ab RD |
1079 | } |
1080 | ||
1081 | qp->device = pd->device; | |
1082 | qp->pd = pd; | |
1083 | qp->send_cq = attr.send_cq; | |
1084 | qp->recv_cq = attr.recv_cq; | |
1085 | qp->srq = attr.srq; | |
9ead190b | 1086 | qp->uobject = &obj->uevent.uobject; |
bc38a6ab RD |
1087 | qp->event_handler = attr.event_handler; |
1088 | qp->qp_context = attr.qp_context; | |
1089 | qp->qp_type = attr.qp_type; | |
1090 | atomic_inc(&pd->usecnt); | |
1091 | atomic_inc(&attr.send_cq->usecnt); | |
1092 | atomic_inc(&attr.recv_cq->usecnt); | |
1093 | if (attr.srq) | |
1094 | atomic_inc(&attr.srq->usecnt); | |
1095 | ||
9ead190b RD |
1096 | obj->uevent.uobject.object = qp; |
1097 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1098 | if (ret) |
1099 | goto err_destroy; | |
1100 | ||
9ead190b RD |
1101 | memset(&resp, 0, sizeof resp); |
1102 | resp.qpn = qp->qp_num; | |
1103 | resp.qp_handle = obj->uevent.uobject.id; | |
77369ed3 JM |
1104 | resp.max_recv_sge = attr.cap.max_recv_sge; |
1105 | resp.max_send_sge = attr.cap.max_send_sge; | |
1106 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
1107 | resp.max_send_wr = attr.cap.max_send_wr; | |
1108 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1109 | |
bc38a6ab RD |
1110 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1111 | &resp, sizeof resp)) { | |
1112 | ret = -EFAULT; | |
9ead190b | 1113 | goto err_copy; |
bc38a6ab RD |
1114 | } |
1115 | ||
9ead190b RD |
1116 | put_pd_read(pd); |
1117 | put_cq_read(scq); | |
43db2bc0 RD |
1118 | if (rcq != scq) |
1119 | put_cq_read(rcq); | |
9ead190b RD |
1120 | if (srq) |
1121 | put_srq_read(srq); | |
1122 | ||
95ed644f | 1123 | mutex_lock(&file->mutex); |
9ead190b | 1124 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1125 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1126 | |
9ead190b RD |
1127 | obj->uevent.uobject.live = 1; |
1128 | ||
1129 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab RD |
1130 | |
1131 | return in_len; | |
1132 | ||
9ead190b RD |
1133 | err_copy: |
1134 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1135 | |
1136 | err_destroy: | |
1137 | ib_destroy_qp(qp); | |
1138 | ||
9ead190b RD |
1139 | err_put: |
1140 | if (pd) | |
1141 | put_pd_read(pd); | |
1142 | if (scq) | |
1143 | put_cq_read(scq); | |
43db2bc0 | 1144 | if (rcq && rcq != scq) |
9ead190b RD |
1145 | put_cq_read(rcq); |
1146 | if (srq) | |
1147 | put_srq_read(srq); | |
1148 | ||
1149 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
1150 | return ret; |
1151 | } | |
1152 | ||
7ccc9a24 DB |
1153 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
1154 | const char __user *buf, int in_len, | |
1155 | int out_len) | |
1156 | { | |
1157 | struct ib_uverbs_query_qp cmd; | |
1158 | struct ib_uverbs_query_qp_resp resp; | |
1159 | struct ib_qp *qp; | |
1160 | struct ib_qp_attr *attr; | |
1161 | struct ib_qp_init_attr *init_attr; | |
1162 | int ret; | |
1163 | ||
1164 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1165 | return -EFAULT; | |
1166 | ||
1167 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1168 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
1169 | if (!attr || !init_attr) { | |
1170 | ret = -ENOMEM; | |
1171 | goto out; | |
1172 | } | |
1173 | ||
9ead190b RD |
1174 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1175 | if (!qp) { | |
7ccc9a24 | 1176 | ret = -EINVAL; |
9ead190b RD |
1177 | goto out; |
1178 | } | |
1179 | ||
1180 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 1181 | |
9ead190b | 1182 | put_qp_read(qp); |
7ccc9a24 DB |
1183 | |
1184 | if (ret) | |
1185 | goto out; | |
1186 | ||
1187 | memset(&resp, 0, sizeof resp); | |
1188 | ||
1189 | resp.qp_state = attr->qp_state; | |
1190 | resp.cur_qp_state = attr->cur_qp_state; | |
1191 | resp.path_mtu = attr->path_mtu; | |
1192 | resp.path_mig_state = attr->path_mig_state; | |
1193 | resp.qkey = attr->qkey; | |
1194 | resp.rq_psn = attr->rq_psn; | |
1195 | resp.sq_psn = attr->sq_psn; | |
1196 | resp.dest_qp_num = attr->dest_qp_num; | |
1197 | resp.qp_access_flags = attr->qp_access_flags; | |
1198 | resp.pkey_index = attr->pkey_index; | |
1199 | resp.alt_pkey_index = attr->alt_pkey_index; | |
0b26c88f | 1200 | resp.sq_draining = attr->sq_draining; |
7ccc9a24 DB |
1201 | resp.max_rd_atomic = attr->max_rd_atomic; |
1202 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1203 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1204 | resp.port_num = attr->port_num; | |
1205 | resp.timeout = attr->timeout; | |
1206 | resp.retry_cnt = attr->retry_cnt; | |
1207 | resp.rnr_retry = attr->rnr_retry; | |
1208 | resp.alt_port_num = attr->alt_port_num; | |
1209 | resp.alt_timeout = attr->alt_timeout; | |
1210 | ||
1211 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1212 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1213 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1214 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1215 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1216 | resp.dest.dlid = attr->ah_attr.dlid; | |
1217 | resp.dest.sl = attr->ah_attr.sl; | |
1218 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1219 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1220 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1221 | resp.dest.port_num = attr->ah_attr.port_num; | |
1222 | ||
1223 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1224 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1225 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1226 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1227 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1228 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1229 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1230 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1231 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1232 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1233 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1234 | ||
1235 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1236 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1237 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1238 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1239 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1240 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1241 | |
1242 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1243 | &resp, sizeof resp)) | |
1244 | ret = -EFAULT; | |
1245 | ||
1246 | out: | |
1247 | kfree(attr); | |
1248 | kfree(init_attr); | |
1249 | ||
1250 | return ret ? ret : in_len; | |
1251 | } | |
1252 | ||
bc38a6ab RD |
1253 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1254 | const char __user *buf, int in_len, | |
1255 | int out_len) | |
1256 | { | |
1257 | struct ib_uverbs_modify_qp cmd; | |
9bc57e2d | 1258 | struct ib_udata udata; |
bc38a6ab RD |
1259 | struct ib_qp *qp; |
1260 | struct ib_qp_attr *attr; | |
1261 | int ret; | |
1262 | ||
1263 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1264 | return -EFAULT; | |
1265 | ||
9bc57e2d RC |
1266 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
1267 | out_len); | |
1268 | ||
bc38a6ab RD |
1269 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
1270 | if (!attr) | |
1271 | return -ENOMEM; | |
1272 | ||
9ead190b RD |
1273 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1274 | if (!qp) { | |
bc38a6ab RD |
1275 | ret = -EINVAL; |
1276 | goto out; | |
1277 | } | |
1278 | ||
1279 | attr->qp_state = cmd.qp_state; | |
1280 | attr->cur_qp_state = cmd.cur_qp_state; | |
1281 | attr->path_mtu = cmd.path_mtu; | |
1282 | attr->path_mig_state = cmd.path_mig_state; | |
1283 | attr->qkey = cmd.qkey; | |
1284 | attr->rq_psn = cmd.rq_psn; | |
1285 | attr->sq_psn = cmd.sq_psn; | |
1286 | attr->dest_qp_num = cmd.dest_qp_num; | |
1287 | attr->qp_access_flags = cmd.qp_access_flags; | |
1288 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1289 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1290 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1291 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1292 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1293 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1294 | attr->port_num = cmd.port_num; | |
1295 | attr->timeout = cmd.timeout; | |
1296 | attr->retry_cnt = cmd.retry_cnt; | |
1297 | attr->rnr_retry = cmd.rnr_retry; | |
1298 | attr->alt_port_num = cmd.alt_port_num; | |
1299 | attr->alt_timeout = cmd.alt_timeout; | |
1300 | ||
1301 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1302 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1303 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1304 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1305 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1306 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1307 | attr->ah_attr.sl = cmd.dest.sl; | |
1308 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1309 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1310 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1311 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1312 | ||
1313 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1314 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1315 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1316 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1317 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1318 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1319 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1320 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1321 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1322 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1323 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1324 | ||
9bc57e2d | 1325 | ret = qp->device->modify_qp(qp, attr, cmd.attr_mask, &udata); |
9ead190b RD |
1326 | |
1327 | put_qp_read(qp); | |
1328 | ||
bc38a6ab RD |
1329 | if (ret) |
1330 | goto out; | |
1331 | ||
1332 | ret = in_len; | |
1333 | ||
1334 | out: | |
bc38a6ab RD |
1335 | kfree(attr); |
1336 | ||
1337 | return ret; | |
1338 | } | |
1339 | ||
1340 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1341 | const char __user *buf, int in_len, | |
1342 | int out_len) | |
1343 | { | |
63aaf647 RD |
1344 | struct ib_uverbs_destroy_qp cmd; |
1345 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 1346 | struct ib_uobject *uobj; |
63aaf647 | 1347 | struct ib_qp *qp; |
9ead190b | 1348 | struct ib_uqp_object *obj; |
63aaf647 | 1349 | int ret = -EINVAL; |
bc38a6ab RD |
1350 | |
1351 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1352 | return -EFAULT; | |
1353 | ||
63aaf647 RD |
1354 | memset(&resp, 0, sizeof resp); |
1355 | ||
9ead190b RD |
1356 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
1357 | if (!uobj) | |
1358 | return -EINVAL; | |
1359 | qp = uobj->object; | |
1360 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 1361 | |
9ead190b RD |
1362 | if (!list_empty(&obj->mcast_list)) { |
1363 | put_uobj_write(uobj); | |
1364 | return -EBUSY; | |
f4e40156 | 1365 | } |
bc38a6ab RD |
1366 | |
1367 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
1368 | if (!ret) |
1369 | uobj->live = 0; | |
1370 | ||
1371 | put_uobj_write(uobj); | |
1372 | ||
bc38a6ab | 1373 | if (ret) |
9ead190b | 1374 | return ret; |
bc38a6ab | 1375 | |
9ead190b | 1376 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 1377 | |
95ed644f | 1378 | mutex_lock(&file->mutex); |
9ead190b | 1379 | list_del(&uobj->list); |
95ed644f | 1380 | mutex_unlock(&file->mutex); |
bc38a6ab | 1381 | |
9ead190b | 1382 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 1383 | |
9ead190b | 1384 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 1385 | |
9ead190b | 1386 | put_uobj(uobj); |
bc38a6ab | 1387 | |
63aaf647 RD |
1388 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1389 | &resp, sizeof resp)) | |
9ead190b | 1390 | return -EFAULT; |
bc38a6ab | 1391 | |
9ead190b | 1392 | return in_len; |
bc38a6ab RD |
1393 | } |
1394 | ||
67cdb40c | 1395 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
1396 | const char __user *buf, int in_len, |
1397 | int out_len) | |
67cdb40c RD |
1398 | { |
1399 | struct ib_uverbs_post_send cmd; | |
1400 | struct ib_uverbs_post_send_resp resp; | |
1401 | struct ib_uverbs_send_wr *user_wr; | |
1402 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
1403 | struct ib_qp *qp; | |
1404 | int i, sg_ind; | |
9ead190b | 1405 | int is_ud; |
67cdb40c RD |
1406 | ssize_t ret = -EINVAL; |
1407 | ||
1408 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1409 | return -EFAULT; | |
1410 | ||
1411 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
1412 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
1413 | return -EINVAL; | |
1414 | ||
1415 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
1416 | return -EINVAL; | |
1417 | ||
1418 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
1419 | if (!user_wr) | |
1420 | return -ENOMEM; | |
1421 | ||
9ead190b RD |
1422 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1423 | if (!qp) | |
67cdb40c RD |
1424 | goto out; |
1425 | ||
9ead190b | 1426 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
1427 | sg_ind = 0; |
1428 | last = NULL; | |
1429 | for (i = 0; i < cmd.wr_count; ++i) { | |
1430 | if (copy_from_user(user_wr, | |
1431 | buf + sizeof cmd + i * cmd.wqe_size, | |
1432 | cmd.wqe_size)) { | |
1433 | ret = -EFAULT; | |
9ead190b | 1434 | goto out_put; |
67cdb40c RD |
1435 | } |
1436 | ||
1437 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
1438 | ret = -EINVAL; | |
9ead190b | 1439 | goto out_put; |
67cdb40c RD |
1440 | } |
1441 | ||
1442 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1443 | user_wr->num_sge * sizeof (struct ib_sge), | |
1444 | GFP_KERNEL); | |
1445 | if (!next) { | |
1446 | ret = -ENOMEM; | |
9ead190b | 1447 | goto out_put; |
67cdb40c RD |
1448 | } |
1449 | ||
1450 | if (!last) | |
1451 | wr = next; | |
1452 | else | |
1453 | last->next = next; | |
1454 | last = next; | |
1455 | ||
1456 | next->next = NULL; | |
1457 | next->wr_id = user_wr->wr_id; | |
1458 | next->num_sge = user_wr->num_sge; | |
1459 | next->opcode = user_wr->opcode; | |
1460 | next->send_flags = user_wr->send_flags; | |
77369ed3 | 1461 | next->imm_data = (__be32 __force) user_wr->imm_data; |
67cdb40c | 1462 | |
9ead190b RD |
1463 | if (is_ud) { |
1464 | next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, | |
1465 | file->ucontext); | |
67cdb40c RD |
1466 | if (!next->wr.ud.ah) { |
1467 | ret = -EINVAL; | |
9ead190b | 1468 | goto out_put; |
67cdb40c RD |
1469 | } |
1470 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
1471 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
1472 | } else { | |
1473 | switch (next->opcode) { | |
1474 | case IB_WR_RDMA_WRITE: | |
1475 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
1476 | case IB_WR_RDMA_READ: | |
1477 | next->wr.rdma.remote_addr = | |
1478 | user_wr->wr.rdma.remote_addr; | |
1479 | next->wr.rdma.rkey = | |
1480 | user_wr->wr.rdma.rkey; | |
1481 | break; | |
1482 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
1483 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
1484 | next->wr.atomic.remote_addr = | |
1485 | user_wr->wr.atomic.remote_addr; | |
1486 | next->wr.atomic.compare_add = | |
1487 | user_wr->wr.atomic.compare_add; | |
1488 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
1489 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
1490 | break; | |
1491 | default: | |
1492 | break; | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | if (next->num_sge) { | |
1497 | next->sg_list = (void *) next + | |
1498 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1499 | if (copy_from_user(next->sg_list, | |
1500 | buf + sizeof cmd + | |
1501 | cmd.wr_count * cmd.wqe_size + | |
1502 | sg_ind * sizeof (struct ib_sge), | |
1503 | next->num_sge * sizeof (struct ib_sge))) { | |
1504 | ret = -EFAULT; | |
9ead190b | 1505 | goto out_put; |
67cdb40c RD |
1506 | } |
1507 | sg_ind += next->num_sge; | |
1508 | } else | |
1509 | next->sg_list = NULL; | |
1510 | } | |
1511 | ||
1512 | resp.bad_wr = 0; | |
1513 | ret = qp->device->post_send(qp, wr, &bad_wr); | |
1514 | if (ret) | |
1515 | for (next = wr; next; next = next->next) { | |
1516 | ++resp.bad_wr; | |
1517 | if (next == bad_wr) | |
1518 | break; | |
1519 | } | |
1520 | ||
1521 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1522 | &resp, sizeof resp)) | |
1523 | ret = -EFAULT; | |
1524 | ||
9ead190b RD |
1525 | out_put: |
1526 | put_qp_read(qp); | |
67cdb40c RD |
1527 | |
1528 | while (wr) { | |
9ead190b RD |
1529 | if (is_ud && wr->wr.ud.ah) |
1530 | put_ah_read(wr->wr.ud.ah); | |
67cdb40c RD |
1531 | next = wr->next; |
1532 | kfree(wr); | |
1533 | wr = next; | |
1534 | } | |
1535 | ||
18320828 | 1536 | out: |
67cdb40c RD |
1537 | kfree(user_wr); |
1538 | ||
1539 | return ret ? ret : in_len; | |
1540 | } | |
1541 | ||
1542 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
1543 | int in_len, | |
1544 | u32 wr_count, | |
1545 | u32 sge_count, | |
1546 | u32 wqe_size) | |
1547 | { | |
1548 | struct ib_uverbs_recv_wr *user_wr; | |
1549 | struct ib_recv_wr *wr = NULL, *last, *next; | |
1550 | int sg_ind; | |
1551 | int i; | |
1552 | int ret; | |
1553 | ||
1554 | if (in_len < wqe_size * wr_count + | |
1555 | sge_count * sizeof (struct ib_uverbs_sge)) | |
1556 | return ERR_PTR(-EINVAL); | |
1557 | ||
1558 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
1559 | return ERR_PTR(-EINVAL); | |
1560 | ||
1561 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
1562 | if (!user_wr) | |
1563 | return ERR_PTR(-ENOMEM); | |
1564 | ||
1565 | sg_ind = 0; | |
1566 | last = NULL; | |
1567 | for (i = 0; i < wr_count; ++i) { | |
1568 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
1569 | wqe_size)) { | |
1570 | ret = -EFAULT; | |
1571 | goto err; | |
1572 | } | |
1573 | ||
1574 | if (user_wr->num_sge + sg_ind > sge_count) { | |
1575 | ret = -EINVAL; | |
1576 | goto err; | |
1577 | } | |
1578 | ||
1579 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1580 | user_wr->num_sge * sizeof (struct ib_sge), | |
1581 | GFP_KERNEL); | |
1582 | if (!next) { | |
1583 | ret = -ENOMEM; | |
1584 | goto err; | |
1585 | } | |
1586 | ||
1587 | if (!last) | |
1588 | wr = next; | |
1589 | else | |
1590 | last->next = next; | |
1591 | last = next; | |
1592 | ||
1593 | next->next = NULL; | |
1594 | next->wr_id = user_wr->wr_id; | |
1595 | next->num_sge = user_wr->num_sge; | |
1596 | ||
1597 | if (next->num_sge) { | |
1598 | next->sg_list = (void *) next + | |
1599 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1600 | if (copy_from_user(next->sg_list, | |
1601 | buf + wr_count * wqe_size + | |
1602 | sg_ind * sizeof (struct ib_sge), | |
1603 | next->num_sge * sizeof (struct ib_sge))) { | |
1604 | ret = -EFAULT; | |
1605 | goto err; | |
1606 | } | |
1607 | sg_ind += next->num_sge; | |
1608 | } else | |
1609 | next->sg_list = NULL; | |
1610 | } | |
1611 | ||
1612 | kfree(user_wr); | |
1613 | return wr; | |
1614 | ||
1615 | err: | |
1616 | kfree(user_wr); | |
1617 | ||
1618 | while (wr) { | |
1619 | next = wr->next; | |
1620 | kfree(wr); | |
1621 | wr = next; | |
1622 | } | |
1623 | ||
1624 | return ERR_PTR(ret); | |
1625 | } | |
1626 | ||
1627 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1628 | const char __user *buf, int in_len, |
1629 | int out_len) | |
67cdb40c RD |
1630 | { |
1631 | struct ib_uverbs_post_recv cmd; | |
1632 | struct ib_uverbs_post_recv_resp resp; | |
1633 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1634 | struct ib_qp *qp; | |
1635 | ssize_t ret = -EINVAL; | |
1636 | ||
1637 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1638 | return -EFAULT; | |
1639 | ||
1640 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1641 | in_len - sizeof cmd, cmd.wr_count, | |
1642 | cmd.sge_count, cmd.wqe_size); | |
1643 | if (IS_ERR(wr)) | |
1644 | return PTR_ERR(wr); | |
1645 | ||
9ead190b RD |
1646 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1647 | if (!qp) | |
67cdb40c RD |
1648 | goto out; |
1649 | ||
1650 | resp.bad_wr = 0; | |
1651 | ret = qp->device->post_recv(qp, wr, &bad_wr); | |
9ead190b RD |
1652 | |
1653 | put_qp_read(qp); | |
1654 | ||
67cdb40c RD |
1655 | if (ret) |
1656 | for (next = wr; next; next = next->next) { | |
1657 | ++resp.bad_wr; | |
1658 | if (next == bad_wr) | |
1659 | break; | |
1660 | } | |
1661 | ||
67cdb40c RD |
1662 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1663 | &resp, sizeof resp)) | |
1664 | ret = -EFAULT; | |
1665 | ||
1666 | out: | |
67cdb40c RD |
1667 | while (wr) { |
1668 | next = wr->next; | |
1669 | kfree(wr); | |
1670 | wr = next; | |
1671 | } | |
1672 | ||
1673 | return ret ? ret : in_len; | |
1674 | } | |
1675 | ||
1676 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1677 | const char __user *buf, int in_len, |
1678 | int out_len) | |
67cdb40c RD |
1679 | { |
1680 | struct ib_uverbs_post_srq_recv cmd; | |
1681 | struct ib_uverbs_post_srq_recv_resp resp; | |
1682 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1683 | struct ib_srq *srq; | |
1684 | ssize_t ret = -EINVAL; | |
1685 | ||
1686 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1687 | return -EFAULT; | |
1688 | ||
1689 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1690 | in_len - sizeof cmd, cmd.wr_count, | |
1691 | cmd.sge_count, cmd.wqe_size); | |
1692 | if (IS_ERR(wr)) | |
1693 | return PTR_ERR(wr); | |
1694 | ||
9ead190b RD |
1695 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
1696 | if (!srq) | |
67cdb40c RD |
1697 | goto out; |
1698 | ||
1699 | resp.bad_wr = 0; | |
1700 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
1701 | |
1702 | put_srq_read(srq); | |
1703 | ||
67cdb40c RD |
1704 | if (ret) |
1705 | for (next = wr; next; next = next->next) { | |
1706 | ++resp.bad_wr; | |
1707 | if (next == bad_wr) | |
1708 | break; | |
1709 | } | |
1710 | ||
67cdb40c RD |
1711 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1712 | &resp, sizeof resp)) | |
1713 | ret = -EFAULT; | |
1714 | ||
1715 | out: | |
67cdb40c RD |
1716 | while (wr) { |
1717 | next = wr->next; | |
1718 | kfree(wr); | |
1719 | wr = next; | |
1720 | } | |
1721 | ||
1722 | return ret ? ret : in_len; | |
1723 | } | |
1724 | ||
1725 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
1726 | const char __user *buf, int in_len, | |
1727 | int out_len) | |
1728 | { | |
1729 | struct ib_uverbs_create_ah cmd; | |
1730 | struct ib_uverbs_create_ah_resp resp; | |
1731 | struct ib_uobject *uobj; | |
1732 | struct ib_pd *pd; | |
1733 | struct ib_ah *ah; | |
1734 | struct ib_ah_attr attr; | |
1735 | int ret; | |
1736 | ||
1737 | if (out_len < sizeof resp) | |
1738 | return -ENOSPC; | |
1739 | ||
1740 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1741 | return -EFAULT; | |
1742 | ||
1743 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1744 | if (!uobj) | |
1745 | return -ENOMEM; | |
1746 | ||
43db2bc0 | 1747 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_key); |
9ead190b | 1748 | down_write(&uobj->mutex); |
67cdb40c | 1749 | |
9ead190b RD |
1750 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1751 | if (!pd) { | |
67cdb40c | 1752 | ret = -EINVAL; |
9ead190b | 1753 | goto err; |
67cdb40c RD |
1754 | } |
1755 | ||
67cdb40c RD |
1756 | attr.dlid = cmd.attr.dlid; |
1757 | attr.sl = cmd.attr.sl; | |
1758 | attr.src_path_bits = cmd.attr.src_path_bits; | |
1759 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 1760 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
1761 | attr.port_num = cmd.attr.port_num; |
1762 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
1763 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
1764 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
1765 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
1766 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
1767 | ||
1768 | ah = ib_create_ah(pd, &attr); | |
1769 | if (IS_ERR(ah)) { | |
1770 | ret = PTR_ERR(ah); | |
ec924b47 | 1771 | goto err_put; |
67cdb40c RD |
1772 | } |
1773 | ||
9ead190b RD |
1774 | ah->uobject = uobj; |
1775 | uobj->object = ah; | |
67cdb40c | 1776 | |
9ead190b | 1777 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
1778 | if (ret) |
1779 | goto err_destroy; | |
1780 | ||
1781 | resp.ah_handle = uobj->id; | |
1782 | ||
1783 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1784 | &resp, sizeof resp)) { | |
1785 | ret = -EFAULT; | |
9ead190b | 1786 | goto err_copy; |
67cdb40c RD |
1787 | } |
1788 | ||
9ead190b RD |
1789 | put_pd_read(pd); |
1790 | ||
95ed644f | 1791 | mutex_lock(&file->mutex); |
67cdb40c | 1792 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 1793 | mutex_unlock(&file->mutex); |
67cdb40c | 1794 | |
9ead190b RD |
1795 | uobj->live = 1; |
1796 | ||
1797 | up_write(&uobj->mutex); | |
67cdb40c RD |
1798 | |
1799 | return in_len; | |
1800 | ||
9ead190b RD |
1801 | err_copy: |
1802 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
1803 | |
1804 | err_destroy: | |
1805 | ib_destroy_ah(ah); | |
1806 | ||
ec924b47 MT |
1807 | err_put: |
1808 | put_pd_read(pd); | |
1809 | ||
9ead190b RD |
1810 | err: |
1811 | put_uobj_write(uobj); | |
67cdb40c RD |
1812 | return ret; |
1813 | } | |
1814 | ||
1815 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
1816 | const char __user *buf, int in_len, int out_len) | |
1817 | { | |
1818 | struct ib_uverbs_destroy_ah cmd; | |
1819 | struct ib_ah *ah; | |
1820 | struct ib_uobject *uobj; | |
9ead190b | 1821 | int ret; |
67cdb40c RD |
1822 | |
1823 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1824 | return -EFAULT; | |
1825 | ||
9ead190b RD |
1826 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
1827 | if (!uobj) | |
1828 | return -EINVAL; | |
1829 | ah = uobj->object; | |
67cdb40c | 1830 | |
9ead190b RD |
1831 | ret = ib_destroy_ah(ah); |
1832 | if (!ret) | |
1833 | uobj->live = 0; | |
67cdb40c | 1834 | |
9ead190b | 1835 | put_uobj_write(uobj); |
67cdb40c | 1836 | |
67cdb40c | 1837 | if (ret) |
9ead190b | 1838 | return ret; |
67cdb40c | 1839 | |
9ead190b | 1840 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 1841 | |
95ed644f | 1842 | mutex_lock(&file->mutex); |
67cdb40c | 1843 | list_del(&uobj->list); |
95ed644f | 1844 | mutex_unlock(&file->mutex); |
67cdb40c | 1845 | |
9ead190b | 1846 | put_uobj(uobj); |
67cdb40c | 1847 | |
9ead190b | 1848 | return in_len; |
67cdb40c RD |
1849 | } |
1850 | ||
bc38a6ab RD |
1851 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
1852 | const char __user *buf, int in_len, | |
1853 | int out_len) | |
1854 | { | |
1855 | struct ib_uverbs_attach_mcast cmd; | |
1856 | struct ib_qp *qp; | |
9ead190b | 1857 | struct ib_uqp_object *obj; |
f4e40156 | 1858 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 1859 | int ret; |
bc38a6ab RD |
1860 | |
1861 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1862 | return -EFAULT; | |
1863 | ||
9ead190b RD |
1864 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1865 | if (!qp) | |
1866 | return -EINVAL; | |
f4e40156 | 1867 | |
9ead190b | 1868 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 1869 | |
9ead190b | 1870 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
1871 | if (cmd.mlid == mcast->lid && |
1872 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1873 | ret = 0; | |
9ead190b | 1874 | goto out_put; |
f4e40156 JM |
1875 | } |
1876 | ||
1877 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
1878 | if (!mcast) { | |
1879 | ret = -ENOMEM; | |
9ead190b | 1880 | goto out_put; |
f4e40156 JM |
1881 | } |
1882 | ||
1883 | mcast->lid = cmd.mlid; | |
1884 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 1885 | |
f4e40156 | 1886 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
1887 | if (!ret) |
1888 | list_add_tail(&mcast->list, &obj->mcast_list); | |
1889 | else | |
f4e40156 JM |
1890 | kfree(mcast); |
1891 | ||
9ead190b RD |
1892 | out_put: |
1893 | put_qp_read(qp); | |
bc38a6ab RD |
1894 | |
1895 | return ret ? ret : in_len; | |
1896 | } | |
1897 | ||
1898 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
1899 | const char __user *buf, int in_len, | |
1900 | int out_len) | |
1901 | { | |
1902 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 1903 | struct ib_uqp_object *obj; |
bc38a6ab | 1904 | struct ib_qp *qp; |
f4e40156 | 1905 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
1906 | int ret = -EINVAL; |
1907 | ||
1908 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1909 | return -EFAULT; | |
1910 | ||
9ead190b RD |
1911 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1912 | if (!qp) | |
1913 | return -EINVAL; | |
bc38a6ab | 1914 | |
f4e40156 JM |
1915 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
1916 | if (ret) | |
9ead190b | 1917 | goto out_put; |
f4e40156 | 1918 | |
9ead190b | 1919 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 1920 | |
9ead190b | 1921 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
1922 | if (cmd.mlid == mcast->lid && |
1923 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1924 | list_del(&mcast->list); | |
1925 | kfree(mcast); | |
1926 | break; | |
1927 | } | |
1928 | ||
9ead190b RD |
1929 | out_put: |
1930 | put_qp_read(qp); | |
bc38a6ab RD |
1931 | |
1932 | return ret ? ret : in_len; | |
1933 | } | |
f520ba5a RD |
1934 | |
1935 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, | |
1936 | const char __user *buf, int in_len, | |
1937 | int out_len) | |
1938 | { | |
1939 | struct ib_uverbs_create_srq cmd; | |
1940 | struct ib_uverbs_create_srq_resp resp; | |
1941 | struct ib_udata udata; | |
9ead190b | 1942 | struct ib_uevent_object *obj; |
f520ba5a RD |
1943 | struct ib_pd *pd; |
1944 | struct ib_srq *srq; | |
1945 | struct ib_srq_init_attr attr; | |
1946 | int ret; | |
1947 | ||
1948 | if (out_len < sizeof resp) | |
1949 | return -ENOSPC; | |
1950 | ||
1951 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1952 | return -EFAULT; | |
1953 | ||
1954 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1955 | (unsigned long) cmd.response + sizeof resp, | |
1956 | in_len - sizeof cmd, out_len - sizeof resp); | |
1957 | ||
9ead190b RD |
1958 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1959 | if (!obj) | |
f520ba5a RD |
1960 | return -ENOMEM; |
1961 | ||
43db2bc0 | 1962 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &srq_lock_key); |
9ead190b | 1963 | down_write(&obj->uobject.mutex); |
f520ba5a | 1964 | |
9ead190b RD |
1965 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1966 | if (!pd) { | |
f520ba5a | 1967 | ret = -EINVAL; |
9ead190b | 1968 | goto err; |
f520ba5a RD |
1969 | } |
1970 | ||
1971 | attr.event_handler = ib_uverbs_srq_event_handler; | |
1972 | attr.srq_context = file; | |
1973 | attr.attr.max_wr = cmd.max_wr; | |
1974 | attr.attr.max_sge = cmd.max_sge; | |
1975 | attr.attr.srq_limit = cmd.srq_limit; | |
1976 | ||
9ead190b RD |
1977 | obj->events_reported = 0; |
1978 | INIT_LIST_HEAD(&obj->event_list); | |
f520ba5a RD |
1979 | |
1980 | srq = pd->device->create_srq(pd, &attr, &udata); | |
1981 | if (IS_ERR(srq)) { | |
1982 | ret = PTR_ERR(srq); | |
ec924b47 | 1983 | goto err_put; |
f520ba5a RD |
1984 | } |
1985 | ||
1986 | srq->device = pd->device; | |
1987 | srq->pd = pd; | |
9ead190b | 1988 | srq->uobject = &obj->uobject; |
f520ba5a RD |
1989 | srq->event_handler = attr.event_handler; |
1990 | srq->srq_context = attr.srq_context; | |
1991 | atomic_inc(&pd->usecnt); | |
1992 | atomic_set(&srq->usecnt, 0); | |
1993 | ||
9ead190b RD |
1994 | obj->uobject.object = srq; |
1995 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uobject); | |
f520ba5a RD |
1996 | if (ret) |
1997 | goto err_destroy; | |
1998 | ||
9ead190b RD |
1999 | memset(&resp, 0, sizeof resp); |
2000 | resp.srq_handle = obj->uobject.id; | |
ea88fd16 DB |
2001 | resp.max_wr = attr.attr.max_wr; |
2002 | resp.max_sge = attr.attr.max_sge; | |
f520ba5a | 2003 | |
f520ba5a RD |
2004 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2005 | &resp, sizeof resp)) { | |
2006 | ret = -EFAULT; | |
9ead190b | 2007 | goto err_copy; |
f520ba5a RD |
2008 | } |
2009 | ||
9ead190b RD |
2010 | put_pd_read(pd); |
2011 | ||
95ed644f | 2012 | mutex_lock(&file->mutex); |
9ead190b | 2013 | list_add_tail(&obj->uobject.list, &file->ucontext->srq_list); |
95ed644f | 2014 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 2015 | |
9ead190b RD |
2016 | obj->uobject.live = 1; |
2017 | ||
2018 | up_write(&obj->uobject.mutex); | |
f520ba5a RD |
2019 | |
2020 | return in_len; | |
2021 | ||
9ead190b RD |
2022 | err_copy: |
2023 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uobject); | |
f520ba5a RD |
2024 | |
2025 | err_destroy: | |
2026 | ib_destroy_srq(srq); | |
2027 | ||
ec924b47 MT |
2028 | err_put: |
2029 | put_pd_read(pd); | |
2030 | ||
9ead190b RD |
2031 | err: |
2032 | put_uobj_write(&obj->uobject); | |
f520ba5a RD |
2033 | return ret; |
2034 | } | |
2035 | ||
2036 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, | |
2037 | const char __user *buf, int in_len, | |
2038 | int out_len) | |
2039 | { | |
2040 | struct ib_uverbs_modify_srq cmd; | |
9bc57e2d | 2041 | struct ib_udata udata; |
f520ba5a RD |
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 | ||
9bc57e2d RC |
2049 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
2050 | out_len); | |
2051 | ||
9ead190b RD |
2052 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2053 | if (!srq) | |
2054 | return -EINVAL; | |
f520ba5a RD |
2055 | |
2056 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
2057 | attr.srq_limit = cmd.srq_limit; |
2058 | ||
9bc57e2d | 2059 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
f520ba5a | 2060 | |
9ead190b | 2061 | put_srq_read(srq); |
f520ba5a RD |
2062 | |
2063 | return ret ? ret : in_len; | |
2064 | } | |
2065 | ||
8bdb0e86 DB |
2066 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
2067 | const char __user *buf, | |
2068 | int in_len, int out_len) | |
2069 | { | |
2070 | struct ib_uverbs_query_srq cmd; | |
2071 | struct ib_uverbs_query_srq_resp resp; | |
2072 | struct ib_srq_attr attr; | |
2073 | struct ib_srq *srq; | |
2074 | int ret; | |
2075 | ||
2076 | if (out_len < sizeof resp) | |
2077 | return -ENOSPC; | |
2078 | ||
2079 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2080 | return -EFAULT; | |
2081 | ||
9ead190b RD |
2082 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2083 | if (!srq) | |
2084 | return -EINVAL; | |
8bdb0e86 | 2085 | |
9ead190b | 2086 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 2087 | |
9ead190b | 2088 | put_srq_read(srq); |
8bdb0e86 DB |
2089 | |
2090 | if (ret) | |
9ead190b | 2091 | return ret; |
8bdb0e86 DB |
2092 | |
2093 | memset(&resp, 0, sizeof resp); | |
2094 | ||
2095 | resp.max_wr = attr.max_wr; | |
2096 | resp.max_sge = attr.max_sge; | |
2097 | resp.srq_limit = attr.srq_limit; | |
2098 | ||
2099 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2100 | &resp, sizeof resp)) | |
9ead190b | 2101 | return -EFAULT; |
8bdb0e86 | 2102 | |
9ead190b | 2103 | return in_len; |
8bdb0e86 DB |
2104 | } |
2105 | ||
f520ba5a RD |
2106 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
2107 | const char __user *buf, int in_len, | |
2108 | int out_len) | |
2109 | { | |
63aaf647 RD |
2110 | struct ib_uverbs_destroy_srq cmd; |
2111 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 2112 | struct ib_uobject *uobj; |
63aaf647 | 2113 | struct ib_srq *srq; |
9ead190b | 2114 | struct ib_uevent_object *obj; |
63aaf647 | 2115 | int ret = -EINVAL; |
f520ba5a RD |
2116 | |
2117 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2118 | return -EFAULT; | |
2119 | ||
9ead190b RD |
2120 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
2121 | if (!uobj) | |
2122 | return -EINVAL; | |
2123 | srq = uobj->object; | |
2124 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
63aaf647 | 2125 | |
9ead190b RD |
2126 | ret = ib_destroy_srq(srq); |
2127 | if (!ret) | |
2128 | uobj->live = 0; | |
f520ba5a | 2129 | |
9ead190b | 2130 | put_uobj_write(uobj); |
f520ba5a | 2131 | |
f520ba5a | 2132 | if (ret) |
9ead190b | 2133 | return ret; |
f520ba5a | 2134 | |
9ead190b | 2135 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 2136 | |
95ed644f | 2137 | mutex_lock(&file->mutex); |
9ead190b | 2138 | list_del(&uobj->list); |
95ed644f | 2139 | mutex_unlock(&file->mutex); |
f520ba5a | 2140 | |
9ead190b | 2141 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 2142 | |
9ead190b RD |
2143 | memset(&resp, 0, sizeof resp); |
2144 | resp.events_reported = obj->events_reported; | |
63aaf647 | 2145 | |
9ead190b | 2146 | put_uobj(uobj); |
f520ba5a | 2147 | |
63aaf647 RD |
2148 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2149 | &resp, sizeof resp)) | |
2150 | ret = -EFAULT; | |
2151 | ||
f520ba5a RD |
2152 | return ret ? ret : in_len; |
2153 | } |