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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. | |
bc38a6ab RD |
34 | */ |
35 | ||
6b73597e | 36 | #include <linux/file.h> |
70a30e16 | 37 | #include <linux/fs.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
6b73597e | 39 | |
bc38a6ab RD |
40 | #include <asm/uaccess.h> |
41 | ||
42 | #include "uverbs.h" | |
43 | ||
43db2bc0 RD |
44 | static struct lock_class_key pd_lock_key; |
45 | static struct lock_class_key mr_lock_key; | |
46 | static struct lock_class_key cq_lock_key; | |
47 | static struct lock_class_key qp_lock_key; | |
48 | static struct lock_class_key ah_lock_key; | |
49 | static struct lock_class_key srq_lock_key; | |
50 | ||
bc38a6ab RD |
51 | #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ |
52 | do { \ | |
53 | (udata)->inbuf = (void __user *) (ibuf); \ | |
54 | (udata)->outbuf = (void __user *) (obuf); \ | |
55 | (udata)->inlen = (ilen); \ | |
56 | (udata)->outlen = (olen); \ | |
57 | } while (0) | |
58 | ||
9ead190b RD |
59 | /* |
60 | * The ib_uobject locking scheme is as follows: | |
61 | * | |
62 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it | |
63 | * needs to be held during all idr operations. When an object is | |
64 | * looked up, a reference must be taken on the object's kref before | |
65 | * dropping this lock. | |
66 | * | |
67 | * - Each object also has an rwsem. This rwsem must be held for | |
68 | * reading while an operation that uses the object is performed. | |
69 | * For example, while registering an MR, the associated PD's | |
70 | * uobject.mutex must be held for reading. The rwsem must be held | |
71 | * for writing while initializing or destroying an object. | |
72 | * | |
73 | * - In addition, each object has a "live" flag. If this flag is not | |
74 | * set, then lookups of the object will fail even if it is found in | |
75 | * the idr. This handles a reader that blocks and does not acquire | |
76 | * the rwsem until after the object is destroyed. The destroy | |
77 | * operation will set the live flag to 0 and then drop the rwsem; | |
78 | * this will allow the reader to acquire the rwsem, see that the | |
79 | * live flag is 0, and then drop the rwsem and its reference to | |
80 | * object. The underlying storage will not be freed until the last | |
81 | * reference to the object is dropped. | |
82 | */ | |
83 | ||
84 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, | |
43db2bc0 | 85 | struct ib_ucontext *context, struct lock_class_key *key) |
9ead190b RD |
86 | { |
87 | uobj->user_handle = user_handle; | |
88 | uobj->context = context; | |
89 | kref_init(&uobj->ref); | |
90 | init_rwsem(&uobj->mutex); | |
43db2bc0 | 91 | lockdep_set_class(&uobj->mutex, key); |
9ead190b RD |
92 | uobj->live = 0; |
93 | } | |
94 | ||
95 | static void release_uobj(struct kref *kref) | |
96 | { | |
97 | kfree(container_of(kref, struct ib_uobject, ref)); | |
98 | } | |
99 | ||
100 | static void put_uobj(struct ib_uobject *uobj) | |
101 | { | |
102 | kref_put(&uobj->ref, release_uobj); | |
103 | } | |
104 | ||
105 | static void put_uobj_read(struct ib_uobject *uobj) | |
106 | { | |
107 | up_read(&uobj->mutex); | |
108 | put_uobj(uobj); | |
109 | } | |
110 | ||
111 | static void put_uobj_write(struct ib_uobject *uobj) | |
112 | { | |
113 | up_write(&uobj->mutex); | |
114 | put_uobj(uobj); | |
115 | } | |
116 | ||
117 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) | |
3463175d RD |
118 | { |
119 | int ret; | |
120 | ||
121 | retry: | |
122 | if (!idr_pre_get(idr, GFP_KERNEL)) | |
123 | return -ENOMEM; | |
124 | ||
9ead190b | 125 | spin_lock(&ib_uverbs_idr_lock); |
3463175d | 126 | ret = idr_get_new(idr, uobj, &uobj->id); |
9ead190b | 127 | spin_unlock(&ib_uverbs_idr_lock); |
3463175d RD |
128 | |
129 | if (ret == -EAGAIN) | |
130 | goto retry; | |
131 | ||
132 | return ret; | |
133 | } | |
134 | ||
9ead190b RD |
135 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
136 | { | |
137 | spin_lock(&ib_uverbs_idr_lock); | |
138 | idr_remove(idr, uobj->id); | |
139 | spin_unlock(&ib_uverbs_idr_lock); | |
140 | } | |
141 | ||
142 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, | |
143 | struct ib_ucontext *context) | |
144 | { | |
145 | struct ib_uobject *uobj; | |
146 | ||
147 | spin_lock(&ib_uverbs_idr_lock); | |
148 | uobj = idr_find(idr, id); | |
cbfb50e6 RD |
149 | if (uobj) { |
150 | if (uobj->context == context) | |
151 | kref_get(&uobj->ref); | |
152 | else | |
153 | uobj = NULL; | |
154 | } | |
9ead190b RD |
155 | spin_unlock(&ib_uverbs_idr_lock); |
156 | ||
157 | return uobj; | |
158 | } | |
159 | ||
160 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, | |
1ccf6aa1 | 161 | struct ib_ucontext *context, int nested) |
9ead190b RD |
162 | { |
163 | struct ib_uobject *uobj; | |
164 | ||
165 | uobj = __idr_get_uobj(idr, id, context); | |
166 | if (!uobj) | |
167 | return NULL; | |
168 | ||
1ccf6aa1 RD |
169 | if (nested) |
170 | down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING); | |
171 | else | |
172 | down_read(&uobj->mutex); | |
9ead190b RD |
173 | if (!uobj->live) { |
174 | put_uobj_read(uobj); | |
175 | return NULL; | |
176 | } | |
177 | ||
178 | return uobj; | |
179 | } | |
180 | ||
181 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, | |
182 | struct ib_ucontext *context) | |
183 | { | |
184 | struct ib_uobject *uobj; | |
185 | ||
186 | uobj = __idr_get_uobj(idr, id, context); | |
187 | if (!uobj) | |
188 | return NULL; | |
189 | ||
190 | down_write(&uobj->mutex); | |
191 | if (!uobj->live) { | |
192 | put_uobj_write(uobj); | |
193 | return NULL; | |
194 | } | |
195 | ||
196 | return uobj; | |
197 | } | |
198 | ||
1ccf6aa1 RD |
199 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context, |
200 | int nested) | |
9ead190b RD |
201 | { |
202 | struct ib_uobject *uobj; | |
203 | ||
1ccf6aa1 | 204 | uobj = idr_read_uobj(idr, id, context, nested); |
9ead190b RD |
205 | return uobj ? uobj->object : NULL; |
206 | } | |
207 | ||
208 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) | |
209 | { | |
1ccf6aa1 | 210 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0); |
9ead190b RD |
211 | } |
212 | ||
213 | static void put_pd_read(struct ib_pd *pd) | |
214 | { | |
215 | put_uobj_read(pd->uobject); | |
216 | } | |
217 | ||
1ccf6aa1 | 218 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested) |
9ead190b | 219 | { |
1ccf6aa1 | 220 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested); |
9ead190b RD |
221 | } |
222 | ||
223 | static void put_cq_read(struct ib_cq *cq) | |
224 | { | |
225 | put_uobj_read(cq->uobject); | |
226 | } | |
227 | ||
228 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) | |
229 | { | |
1ccf6aa1 | 230 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0); |
9ead190b RD |
231 | } |
232 | ||
233 | static void put_ah_read(struct ib_ah *ah) | |
234 | { | |
235 | put_uobj_read(ah->uobject); | |
236 | } | |
237 | ||
238 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) | |
239 | { | |
1ccf6aa1 | 240 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0); |
9ead190b RD |
241 | } |
242 | ||
243 | static void put_qp_read(struct ib_qp *qp) | |
244 | { | |
245 | put_uobj_read(qp->uobject); | |
246 | } | |
247 | ||
248 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) | |
249 | { | |
1ccf6aa1 | 250 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0); |
9ead190b RD |
251 | } |
252 | ||
253 | static void put_srq_read(struct ib_srq *srq) | |
254 | { | |
255 | put_uobj_read(srq->uobject); | |
256 | } | |
257 | ||
bc38a6ab RD |
258 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
259 | const char __user *buf, | |
260 | int in_len, int out_len) | |
261 | { | |
262 | struct ib_uverbs_get_context cmd; | |
263 | struct ib_uverbs_get_context_resp resp; | |
264 | struct ib_udata udata; | |
265 | struct ib_device *ibdev = file->device->ib_dev; | |
63c47c28 | 266 | struct ib_ucontext *ucontext; |
6b73597e | 267 | struct file *filp; |
63c47c28 | 268 | int ret; |
bc38a6ab RD |
269 | |
270 | if (out_len < sizeof resp) | |
271 | return -ENOSPC; | |
272 | ||
273 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
274 | return -EFAULT; | |
275 | ||
95ed644f | 276 | mutex_lock(&file->mutex); |
63c47c28 RD |
277 | |
278 | if (file->ucontext) { | |
279 | ret = -EINVAL; | |
280 | goto err; | |
281 | } | |
282 | ||
bc38a6ab RD |
283 | INIT_UDATA(&udata, buf + sizeof cmd, |
284 | (unsigned long) cmd.response + sizeof resp, | |
285 | in_len - sizeof cmd, out_len - sizeof resp); | |
286 | ||
63c47c28 | 287 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
77f76013 | 288 | if (IS_ERR(ucontext)) { |
df42245a | 289 | ret = PTR_ERR(ucontext); |
77f76013 GC |
290 | goto err; |
291 | } | |
bc38a6ab | 292 | |
63c47c28 RD |
293 | ucontext->device = ibdev; |
294 | INIT_LIST_HEAD(&ucontext->pd_list); | |
295 | INIT_LIST_HEAD(&ucontext->mr_list); | |
296 | INIT_LIST_HEAD(&ucontext->mw_list); | |
297 | INIT_LIST_HEAD(&ucontext->cq_list); | |
298 | INIT_LIST_HEAD(&ucontext->qp_list); | |
299 | INIT_LIST_HEAD(&ucontext->srq_list); | |
300 | INIT_LIST_HEAD(&ucontext->ah_list); | |
f7c6a7b5 | 301 | ucontext->closing = 0; |
bc38a6ab | 302 | |
6b73597e RD |
303 | resp.num_comp_vectors = file->device->num_comp_vectors; |
304 | ||
b1e4594b AV |
305 | ret = get_unused_fd(); |
306 | if (ret < 0) | |
307 | goto err_free; | |
308 | resp.async_fd = ret; | |
309 | ||
310 | filp = ib_uverbs_alloc_event_file(file, 1); | |
6b73597e RD |
311 | if (IS_ERR(filp)) { |
312 | ret = PTR_ERR(filp); | |
b1e4594b | 313 | goto err_fd; |
6b73597e | 314 | } |
bc38a6ab RD |
315 | |
316 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
317 | &resp, sizeof resp)) { |
318 | ret = -EFAULT; | |
6b73597e | 319 | goto err_file; |
63c47c28 RD |
320 | } |
321 | ||
6b73597e RD |
322 | file->async_file = filp->private_data; |
323 | ||
324 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
325 | ib_uverbs_event_handler); | |
326 | ret = ib_register_event_handler(&file->event_handler); | |
327 | if (ret) | |
328 | goto err_file; | |
329 | ||
330 | kref_get(&file->async_file->ref); | |
331 | kref_get(&file->ref); | |
70a30e16 | 332 | file->ucontext = ucontext; |
6b73597e RD |
333 | |
334 | fd_install(resp.async_fd, filp); | |
335 | ||
95ed644f | 336 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
337 | |
338 | return in_len; | |
339 | ||
6b73597e | 340 | err_file: |
6b73597e RD |
341 | fput(filp); |
342 | ||
b1e4594b AV |
343 | err_fd: |
344 | put_unused_fd(resp.async_fd); | |
345 | ||
63c47c28 RD |
346 | err_free: |
347 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 348 | |
63c47c28 | 349 | err: |
95ed644f | 350 | mutex_unlock(&file->mutex); |
63c47c28 | 351 | return ret; |
bc38a6ab RD |
352 | } |
353 | ||
354 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
355 | const char __user *buf, | |
356 | int in_len, int out_len) | |
357 | { | |
358 | struct ib_uverbs_query_device cmd; | |
359 | struct ib_uverbs_query_device_resp resp; | |
360 | struct ib_device_attr attr; | |
361 | int ret; | |
362 | ||
363 | if (out_len < sizeof resp) | |
364 | return -ENOSPC; | |
365 | ||
366 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
367 | return -EFAULT; | |
368 | ||
369 | ret = ib_query_device(file->device->ib_dev, &attr); | |
370 | if (ret) | |
371 | return ret; | |
372 | ||
373 | memset(&resp, 0, sizeof resp); | |
374 | ||
375 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 376 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
377 | resp.sys_image_guid = attr.sys_image_guid; |
378 | resp.max_mr_size = attr.max_mr_size; | |
379 | resp.page_size_cap = attr.page_size_cap; | |
380 | resp.vendor_id = attr.vendor_id; | |
381 | resp.vendor_part_id = attr.vendor_part_id; | |
382 | resp.hw_ver = attr.hw_ver; | |
383 | resp.max_qp = attr.max_qp; | |
384 | resp.max_qp_wr = attr.max_qp_wr; | |
385 | resp.device_cap_flags = attr.device_cap_flags; | |
386 | resp.max_sge = attr.max_sge; | |
387 | resp.max_sge_rd = attr.max_sge_rd; | |
388 | resp.max_cq = attr.max_cq; | |
389 | resp.max_cqe = attr.max_cqe; | |
390 | resp.max_mr = attr.max_mr; | |
391 | resp.max_pd = attr.max_pd; | |
392 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
393 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
394 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
395 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
396 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
397 | resp.atomic_cap = attr.atomic_cap; | |
398 | resp.max_ee = attr.max_ee; | |
399 | resp.max_rdd = attr.max_rdd; | |
400 | resp.max_mw = attr.max_mw; | |
401 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
402 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
403 | resp.max_mcast_grp = attr.max_mcast_grp; | |
404 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
405 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
406 | resp.max_ah = attr.max_ah; | |
407 | resp.max_fmr = attr.max_fmr; | |
408 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
409 | resp.max_srq = attr.max_srq; | |
410 | resp.max_srq_wr = attr.max_srq_wr; | |
411 | resp.max_srq_sge = attr.max_srq_sge; | |
412 | resp.max_pkeys = attr.max_pkeys; | |
413 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
414 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
415 | ||
416 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
417 | &resp, sizeof resp)) | |
418 | return -EFAULT; | |
419 | ||
420 | return in_len; | |
421 | } | |
422 | ||
423 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
424 | const char __user *buf, | |
425 | int in_len, int out_len) | |
426 | { | |
427 | struct ib_uverbs_query_port cmd; | |
428 | struct ib_uverbs_query_port_resp resp; | |
429 | struct ib_port_attr attr; | |
430 | int ret; | |
431 | ||
432 | if (out_len < sizeof resp) | |
433 | return -ENOSPC; | |
434 | ||
435 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
436 | return -EFAULT; | |
437 | ||
438 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
439 | if (ret) | |
440 | return ret; | |
441 | ||
442 | memset(&resp, 0, sizeof resp); | |
443 | ||
444 | resp.state = attr.state; | |
445 | resp.max_mtu = attr.max_mtu; | |
446 | resp.active_mtu = attr.active_mtu; | |
447 | resp.gid_tbl_len = attr.gid_tbl_len; | |
448 | resp.port_cap_flags = attr.port_cap_flags; | |
449 | resp.max_msg_sz = attr.max_msg_sz; | |
450 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
451 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
452 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
453 | resp.lid = attr.lid; | |
454 | resp.sm_lid = attr.sm_lid; | |
455 | resp.lmc = attr.lmc; | |
456 | resp.max_vl_num = attr.max_vl_num; | |
457 | resp.sm_sl = attr.sm_sl; | |
458 | resp.subnet_timeout = attr.subnet_timeout; | |
459 | resp.init_type_reply = attr.init_type_reply; | |
460 | resp.active_width = attr.active_width; | |
461 | resp.active_speed = attr.active_speed; | |
462 | resp.phys_state = attr.phys_state; | |
2420b60b EC |
463 | resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev, |
464 | cmd.port_num); | |
bc38a6ab RD |
465 | |
466 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
467 | &resp, sizeof resp)) | |
468 | return -EFAULT; | |
469 | ||
470 | return in_len; | |
471 | } | |
472 | ||
bc38a6ab RD |
473 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
474 | const char __user *buf, | |
475 | int in_len, int out_len) | |
476 | { | |
477 | struct ib_uverbs_alloc_pd cmd; | |
478 | struct ib_uverbs_alloc_pd_resp resp; | |
479 | struct ib_udata udata; | |
480 | struct ib_uobject *uobj; | |
481 | struct ib_pd *pd; | |
482 | int ret; | |
483 | ||
484 | if (out_len < sizeof resp) | |
485 | return -ENOSPC; | |
486 | ||
487 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
488 | return -EFAULT; | |
489 | ||
490 | INIT_UDATA(&udata, buf + sizeof cmd, | |
491 | (unsigned long) cmd.response + sizeof resp, | |
492 | in_len - sizeof cmd, out_len - sizeof resp); | |
493 | ||
494 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
495 | if (!uobj) | |
496 | return -ENOMEM; | |
497 | ||
43db2bc0 | 498 | init_uobj(uobj, 0, file->ucontext, &pd_lock_key); |
9ead190b | 499 | down_write(&uobj->mutex); |
bc38a6ab RD |
500 | |
501 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
502 | file->ucontext, &udata); | |
503 | if (IS_ERR(pd)) { | |
504 | ret = PTR_ERR(pd); | |
505 | goto err; | |
506 | } | |
507 | ||
508 | pd->device = file->device->ib_dev; | |
509 | pd->uobject = uobj; | |
510 | atomic_set(&pd->usecnt, 0); | |
511 | ||
9ead190b RD |
512 | uobj->object = pd; |
513 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 514 | if (ret) |
9ead190b | 515 | goto err_idr; |
bc38a6ab RD |
516 | |
517 | memset(&resp, 0, sizeof resp); | |
518 | resp.pd_handle = uobj->id; | |
519 | ||
520 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
521 | &resp, sizeof resp)) { | |
522 | ret = -EFAULT; | |
9ead190b | 523 | goto err_copy; |
bc38a6ab RD |
524 | } |
525 | ||
95ed644f | 526 | mutex_lock(&file->mutex); |
eb9d3cd5 | 527 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 528 | mutex_unlock(&file->mutex); |
bc38a6ab | 529 | |
9ead190b RD |
530 | uobj->live = 1; |
531 | ||
532 | up_write(&uobj->mutex); | |
bc38a6ab | 533 | |
eb9d3cd5 RD |
534 | return in_len; |
535 | ||
9ead190b RD |
536 | err_copy: |
537 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 538 | |
9ead190b | 539 | err_idr: |
bc38a6ab RD |
540 | ib_dealloc_pd(pd); |
541 | ||
542 | err: | |
9ead190b | 543 | put_uobj_write(uobj); |
bc38a6ab RD |
544 | return ret; |
545 | } | |
546 | ||
547 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
548 | const char __user *buf, | |
549 | int in_len, int out_len) | |
550 | { | |
551 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 552 | struct ib_uobject *uobj; |
9ead190b | 553 | int ret; |
bc38a6ab RD |
554 | |
555 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
556 | return -EFAULT; | |
557 | ||
9ead190b RD |
558 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
559 | if (!uobj) | |
560 | return -EINVAL; | |
bc38a6ab | 561 | |
9ead190b RD |
562 | ret = ib_dealloc_pd(uobj->object); |
563 | if (!ret) | |
564 | uobj->live = 0; | |
bc38a6ab | 565 | |
9ead190b | 566 | put_uobj_write(uobj); |
bc38a6ab | 567 | |
bc38a6ab | 568 | if (ret) |
9ead190b | 569 | return ret; |
bc38a6ab | 570 | |
9ead190b | 571 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 572 | |
95ed644f | 573 | mutex_lock(&file->mutex); |
bc38a6ab | 574 | list_del(&uobj->list); |
95ed644f | 575 | mutex_unlock(&file->mutex); |
bc38a6ab | 576 | |
9ead190b | 577 | put_uobj(uobj); |
bc38a6ab | 578 | |
9ead190b | 579 | return in_len; |
bc38a6ab RD |
580 | } |
581 | ||
582 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, | |
583 | const char __user *buf, int in_len, | |
584 | int out_len) | |
585 | { | |
586 | struct ib_uverbs_reg_mr cmd; | |
587 | struct ib_uverbs_reg_mr_resp resp; | |
588 | struct ib_udata udata; | |
f7c6a7b5 | 589 | struct ib_uobject *uobj; |
bc38a6ab RD |
590 | struct ib_pd *pd; |
591 | struct ib_mr *mr; | |
592 | int ret; | |
593 | ||
594 | if (out_len < sizeof resp) | |
595 | return -ENOSPC; | |
596 | ||
597 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
598 | return -EFAULT; | |
599 | ||
600 | INIT_UDATA(&udata, buf + sizeof cmd, | |
601 | (unsigned long) cmd.response + sizeof resp, | |
602 | in_len - sizeof cmd, out_len - sizeof resp); | |
603 | ||
604 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
605 | return -EINVAL; | |
606 | ||
f575394f RD |
607 | /* |
608 | * Local write permission is required if remote write or | |
609 | * remote atomic permission is also requested. | |
610 | */ | |
611 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
612 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) | |
613 | return -EINVAL; | |
614 | ||
f7c6a7b5 RD |
615 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
616 | if (!uobj) | |
bc38a6ab RD |
617 | return -ENOMEM; |
618 | ||
f7c6a7b5 RD |
619 | init_uobj(uobj, 0, file->ucontext, &mr_lock_key); |
620 | down_write(&uobj->mutex); | |
bc38a6ab | 621 | |
9ead190b | 622 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
aaf1aef5 RD |
623 | if (!pd) { |
624 | ret = -EINVAL; | |
f7c6a7b5 | 625 | goto err_free; |
aaf1aef5 | 626 | } |
bc38a6ab | 627 | |
f7c6a7b5 RD |
628 | mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
629 | cmd.access_flags, &udata); | |
bc38a6ab RD |
630 | if (IS_ERR(mr)) { |
631 | ret = PTR_ERR(mr); | |
9ead190b | 632 | goto err_put; |
bc38a6ab RD |
633 | } |
634 | ||
635 | mr->device = pd->device; | |
636 | mr->pd = pd; | |
f7c6a7b5 | 637 | mr->uobject = uobj; |
bc38a6ab RD |
638 | atomic_inc(&pd->usecnt); |
639 | atomic_set(&mr->usecnt, 0); | |
640 | ||
f7c6a7b5 RD |
641 | uobj->object = mr; |
642 | ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); | |
bc38a6ab RD |
643 | if (ret) |
644 | goto err_unreg; | |
645 | ||
9ead190b RD |
646 | memset(&resp, 0, sizeof resp); |
647 | resp.lkey = mr->lkey; | |
648 | resp.rkey = mr->rkey; | |
f7c6a7b5 | 649 | resp.mr_handle = uobj->id; |
bc38a6ab | 650 | |
bc38a6ab RD |
651 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
652 | &resp, sizeof resp)) { | |
653 | ret = -EFAULT; | |
9ead190b | 654 | goto err_copy; |
bc38a6ab RD |
655 | } |
656 | ||
9ead190b RD |
657 | put_pd_read(pd); |
658 | ||
95ed644f | 659 | mutex_lock(&file->mutex); |
f7c6a7b5 | 660 | list_add_tail(&uobj->list, &file->ucontext->mr_list); |
95ed644f | 661 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 662 | |
f7c6a7b5 | 663 | uobj->live = 1; |
9ead190b | 664 | |
f7c6a7b5 | 665 | up_write(&uobj->mutex); |
bc38a6ab RD |
666 | |
667 | return in_len; | |
668 | ||
9ead190b | 669 | err_copy: |
f7c6a7b5 | 670 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab RD |
671 | |
672 | err_unreg: | |
673 | ib_dereg_mr(mr); | |
674 | ||
9ead190b RD |
675 | err_put: |
676 | put_pd_read(pd); | |
bc38a6ab | 677 | |
bc38a6ab | 678 | err_free: |
f7c6a7b5 | 679 | put_uobj_write(uobj); |
bc38a6ab RD |
680 | return ret; |
681 | } | |
682 | ||
683 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
684 | const char __user *buf, int in_len, | |
685 | int out_len) | |
686 | { | |
687 | struct ib_uverbs_dereg_mr cmd; | |
688 | struct ib_mr *mr; | |
9ead190b | 689 | struct ib_uobject *uobj; |
bc38a6ab RD |
690 | int ret = -EINVAL; |
691 | ||
692 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
693 | return -EFAULT; | |
694 | ||
9ead190b RD |
695 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
696 | if (!uobj) | |
697 | return -EINVAL; | |
bc38a6ab | 698 | |
f7c6a7b5 | 699 | mr = uobj->object; |
bc38a6ab RD |
700 | |
701 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
702 | if (!ret) |
703 | uobj->live = 0; | |
704 | ||
705 | put_uobj_write(uobj); | |
706 | ||
bc38a6ab | 707 | if (ret) |
9ead190b | 708 | return ret; |
bc38a6ab | 709 | |
9ead190b | 710 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 711 | |
95ed644f | 712 | mutex_lock(&file->mutex); |
9ead190b | 713 | list_del(&uobj->list); |
95ed644f | 714 | mutex_unlock(&file->mutex); |
bc38a6ab | 715 | |
9ead190b | 716 | put_uobj(uobj); |
bc38a6ab | 717 | |
9ead190b | 718 | return in_len; |
bc38a6ab RD |
719 | } |
720 | ||
6b73597e RD |
721 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
722 | const char __user *buf, int in_len, | |
723 | int out_len) | |
724 | { | |
725 | struct ib_uverbs_create_comp_channel cmd; | |
726 | struct ib_uverbs_create_comp_channel_resp resp; | |
727 | struct file *filp; | |
b1e4594b | 728 | int ret; |
6b73597e RD |
729 | |
730 | if (out_len < sizeof resp) | |
731 | return -ENOSPC; | |
732 | ||
733 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
734 | return -EFAULT; | |
735 | ||
b1e4594b AV |
736 | ret = get_unused_fd(); |
737 | if (ret < 0) | |
738 | return ret; | |
739 | resp.fd = ret; | |
740 | ||
741 | filp = ib_uverbs_alloc_event_file(file, 0); | |
742 | if (IS_ERR(filp)) { | |
743 | put_unused_fd(resp.fd); | |
6b73597e | 744 | return PTR_ERR(filp); |
b1e4594b | 745 | } |
6b73597e RD |
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 | ||
7182afea DC |
896 | static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) |
897 | { | |
898 | struct ib_uverbs_wc tmp; | |
899 | ||
900 | tmp.wr_id = wc->wr_id; | |
901 | tmp.status = wc->status; | |
902 | tmp.opcode = wc->opcode; | |
903 | tmp.vendor_err = wc->vendor_err; | |
904 | tmp.byte_len = wc->byte_len; | |
905 | tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; | |
906 | tmp.qp_num = wc->qp->qp_num; | |
907 | tmp.src_qp = wc->src_qp; | |
908 | tmp.wc_flags = wc->wc_flags; | |
909 | tmp.pkey_index = wc->pkey_index; | |
910 | tmp.slid = wc->slid; | |
911 | tmp.sl = wc->sl; | |
912 | tmp.dlid_path_bits = wc->dlid_path_bits; | |
913 | tmp.port_num = wc->port_num; | |
914 | tmp.reserved = 0; | |
915 | ||
916 | if (copy_to_user(dest, &tmp, sizeof tmp)) | |
917 | return -EFAULT; | |
918 | ||
919 | return 0; | |
920 | } | |
921 | ||
67cdb40c RD |
922 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
923 | const char __user *buf, int in_len, | |
924 | int out_len) | |
925 | { | |
926 | struct ib_uverbs_poll_cq cmd; | |
7182afea DC |
927 | struct ib_uverbs_poll_cq_resp resp; |
928 | u8 __user *header_ptr; | |
929 | u8 __user *data_ptr; | |
67cdb40c | 930 | struct ib_cq *cq; |
7182afea DC |
931 | struct ib_wc wc; |
932 | int ret; | |
67cdb40c RD |
933 | |
934 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
935 | return -EFAULT; | |
936 | ||
1ccf6aa1 | 937 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
7182afea DC |
938 | if (!cq) |
939 | return -EINVAL; | |
67cdb40c | 940 | |
7182afea DC |
941 | /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
942 | header_ptr = (void __user *)(unsigned long) cmd.response; | |
943 | data_ptr = header_ptr + sizeof resp; | |
9ead190b | 944 | |
7182afea DC |
945 | memset(&resp, 0, sizeof resp); |
946 | while (resp.count < cmd.ne) { | |
947 | ret = ib_poll_cq(cq, 1, &wc); | |
948 | if (ret < 0) | |
949 | goto out_put; | |
950 | if (!ret) | |
951 | break; | |
952 | ||
953 | ret = copy_wc_to_user(data_ptr, &wc); | |
954 | if (ret) | |
955 | goto out_put; | |
956 | ||
957 | data_ptr += sizeof(struct ib_uverbs_wc); | |
958 | ++resp.count; | |
67cdb40c RD |
959 | } |
960 | ||
7182afea | 961 | if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
67cdb40c | 962 | ret = -EFAULT; |
7182afea DC |
963 | goto out_put; |
964 | } | |
67cdb40c | 965 | |
7182afea | 966 | ret = in_len; |
67cdb40c | 967 | |
7182afea DC |
968 | out_put: |
969 | put_cq_read(cq); | |
970 | return ret; | |
67cdb40c RD |
971 | } |
972 | ||
973 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
974 | const char __user *buf, int in_len, | |
975 | int out_len) | |
976 | { | |
977 | struct ib_uverbs_req_notify_cq cmd; | |
978 | struct ib_cq *cq; | |
67cdb40c RD |
979 | |
980 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
981 | return -EFAULT; | |
982 | ||
1ccf6aa1 | 983 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 984 | if (!cq) |
9ead190b | 985 | return -EINVAL; |
67cdb40c | 986 | |
9ead190b RD |
987 | ib_req_notify_cq(cq, cmd.solicited_only ? |
988 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
989 | ||
ab108676 | 990 | put_cq_read(cq); |
9ead190b RD |
991 | |
992 | return in_len; | |
67cdb40c RD |
993 | } |
994 | ||
bc38a6ab RD |
995 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
996 | const char __user *buf, int in_len, | |
997 | int out_len) | |
998 | { | |
63aaf647 RD |
999 | struct ib_uverbs_destroy_cq cmd; |
1000 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 1001 | struct ib_uobject *uobj; |
63aaf647 | 1002 | struct ib_cq *cq; |
9ead190b | 1003 | struct ib_ucq_object *obj; |
6b73597e | 1004 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 1005 | int ret = -EINVAL; |
bc38a6ab RD |
1006 | |
1007 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1008 | return -EFAULT; | |
1009 | ||
9ead190b RD |
1010 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
1011 | if (!uobj) | |
1012 | return -EINVAL; | |
1013 | cq = uobj->object; | |
1014 | ev_file = cq->cq_context; | |
1015 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 1016 | |
9ead190b RD |
1017 | ret = ib_destroy_cq(cq); |
1018 | if (!ret) | |
1019 | uobj->live = 0; | |
bc38a6ab | 1020 | |
9ead190b | 1021 | put_uobj_write(uobj); |
bc38a6ab | 1022 | |
bc38a6ab | 1023 | if (ret) |
9ead190b | 1024 | return ret; |
bc38a6ab | 1025 | |
9ead190b | 1026 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 1027 | |
95ed644f | 1028 | mutex_lock(&file->mutex); |
9ead190b | 1029 | list_del(&uobj->list); |
95ed644f | 1030 | mutex_unlock(&file->mutex); |
bc38a6ab | 1031 | |
9ead190b | 1032 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1033 | |
9ead190b RD |
1034 | memset(&resp, 0, sizeof resp); |
1035 | resp.comp_events_reported = obj->comp_events_reported; | |
1036 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1037 | |
9ead190b | 1038 | put_uobj(uobj); |
bc38a6ab | 1039 | |
63aaf647 RD |
1040 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1041 | &resp, sizeof resp)) | |
9ead190b | 1042 | return -EFAULT; |
bc38a6ab | 1043 | |
9ead190b | 1044 | return in_len; |
bc38a6ab RD |
1045 | } |
1046 | ||
1047 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
1048 | const char __user *buf, int in_len, | |
1049 | int out_len) | |
1050 | { | |
1051 | struct ib_uverbs_create_qp cmd; | |
1052 | struct ib_uverbs_create_qp_resp resp; | |
1053 | struct ib_udata udata; | |
9ead190b | 1054 | struct ib_uqp_object *obj; |
bc38a6ab RD |
1055 | struct ib_pd *pd; |
1056 | struct ib_cq *scq, *rcq; | |
f520ba5a | 1057 | struct ib_srq *srq; |
bc38a6ab RD |
1058 | struct ib_qp *qp; |
1059 | struct ib_qp_init_attr attr; | |
1060 | int ret; | |
1061 | ||
1062 | if (out_len < sizeof resp) | |
1063 | return -ENOSPC; | |
1064 | ||
1065 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1066 | return -EFAULT; | |
1067 | ||
1068 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1069 | (unsigned long) cmd.response + sizeof resp, | |
1070 | in_len - sizeof cmd, out_len - sizeof resp); | |
1071 | ||
9ead190b RD |
1072 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1073 | if (!obj) | |
bc38a6ab RD |
1074 | return -ENOMEM; |
1075 | ||
43db2bc0 | 1076 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_key); |
9ead190b | 1077 | down_write(&obj->uevent.uobject.mutex); |
bc38a6ab | 1078 | |
43db2bc0 | 1079 | srq = cmd.is_srq ? idr_read_srq(cmd.srq_handle, file->ucontext) : NULL; |
9ead190b | 1080 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1ccf6aa1 | 1081 | scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, 0); |
43db2bc0 | 1082 | rcq = cmd.recv_cq_handle == cmd.send_cq_handle ? |
1ccf6aa1 | 1083 | scq : idr_read_cq(cmd.recv_cq_handle, file->ucontext, 1); |
bc38a6ab | 1084 | |
9ead190b | 1085 | if (!pd || !scq || !rcq || (cmd.is_srq && !srq)) { |
bc38a6ab | 1086 | ret = -EINVAL; |
9ead190b | 1087 | goto err_put; |
bc38a6ab RD |
1088 | } |
1089 | ||
1090 | attr.event_handler = ib_uverbs_qp_event_handler; | |
1091 | attr.qp_context = file; | |
1092 | attr.send_cq = scq; | |
1093 | attr.recv_cq = rcq; | |
f520ba5a | 1094 | attr.srq = srq; |
bc38a6ab RD |
1095 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
1096 | attr.qp_type = cmd.qp_type; | |
b846f25a | 1097 | attr.create_flags = 0; |
bc38a6ab RD |
1098 | |
1099 | attr.cap.max_send_wr = cmd.max_send_wr; | |
1100 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
1101 | attr.cap.max_send_sge = cmd.max_send_sge; | |
1102 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
1103 | attr.cap.max_inline_data = cmd.max_inline_data; | |
1104 | ||
9ead190b RD |
1105 | obj->uevent.events_reported = 0; |
1106 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1107 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab RD |
1108 | |
1109 | qp = pd->device->create_qp(pd, &attr, &udata); | |
1110 | if (IS_ERR(qp)) { | |
1111 | ret = PTR_ERR(qp); | |
9ead190b | 1112 | goto err_put; |
bc38a6ab RD |
1113 | } |
1114 | ||
1115 | qp->device = pd->device; | |
1116 | qp->pd = pd; | |
1117 | qp->send_cq = attr.send_cq; | |
1118 | qp->recv_cq = attr.recv_cq; | |
1119 | qp->srq = attr.srq; | |
9ead190b | 1120 | qp->uobject = &obj->uevent.uobject; |
bc38a6ab RD |
1121 | qp->event_handler = attr.event_handler; |
1122 | qp->qp_context = attr.qp_context; | |
1123 | qp->qp_type = attr.qp_type; | |
1124 | atomic_inc(&pd->usecnt); | |
1125 | atomic_inc(&attr.send_cq->usecnt); | |
1126 | atomic_inc(&attr.recv_cq->usecnt); | |
1127 | if (attr.srq) | |
1128 | atomic_inc(&attr.srq->usecnt); | |
1129 | ||
9ead190b RD |
1130 | obj->uevent.uobject.object = qp; |
1131 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1132 | if (ret) |
1133 | goto err_destroy; | |
1134 | ||
9ead190b RD |
1135 | memset(&resp, 0, sizeof resp); |
1136 | resp.qpn = qp->qp_num; | |
1137 | resp.qp_handle = obj->uevent.uobject.id; | |
77369ed3 JM |
1138 | resp.max_recv_sge = attr.cap.max_recv_sge; |
1139 | resp.max_send_sge = attr.cap.max_send_sge; | |
1140 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
1141 | resp.max_send_wr = attr.cap.max_send_wr; | |
1142 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1143 | |
bc38a6ab RD |
1144 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1145 | &resp, sizeof resp)) { | |
1146 | ret = -EFAULT; | |
9ead190b | 1147 | goto err_copy; |
bc38a6ab RD |
1148 | } |
1149 | ||
9ead190b RD |
1150 | put_pd_read(pd); |
1151 | put_cq_read(scq); | |
43db2bc0 RD |
1152 | if (rcq != scq) |
1153 | put_cq_read(rcq); | |
9ead190b RD |
1154 | if (srq) |
1155 | put_srq_read(srq); | |
1156 | ||
95ed644f | 1157 | mutex_lock(&file->mutex); |
9ead190b | 1158 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1159 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1160 | |
9ead190b RD |
1161 | obj->uevent.uobject.live = 1; |
1162 | ||
1163 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab RD |
1164 | |
1165 | return in_len; | |
1166 | ||
9ead190b RD |
1167 | err_copy: |
1168 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1169 | |
1170 | err_destroy: | |
1171 | ib_destroy_qp(qp); | |
1172 | ||
9ead190b RD |
1173 | err_put: |
1174 | if (pd) | |
1175 | put_pd_read(pd); | |
1176 | if (scq) | |
1177 | put_cq_read(scq); | |
43db2bc0 | 1178 | if (rcq && rcq != scq) |
9ead190b RD |
1179 | put_cq_read(rcq); |
1180 | if (srq) | |
1181 | put_srq_read(srq); | |
1182 | ||
1183 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
1184 | return ret; |
1185 | } | |
1186 | ||
7ccc9a24 DB |
1187 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
1188 | const char __user *buf, int in_len, | |
1189 | int out_len) | |
1190 | { | |
1191 | struct ib_uverbs_query_qp cmd; | |
1192 | struct ib_uverbs_query_qp_resp resp; | |
1193 | struct ib_qp *qp; | |
1194 | struct ib_qp_attr *attr; | |
1195 | struct ib_qp_init_attr *init_attr; | |
1196 | int ret; | |
1197 | ||
1198 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1199 | return -EFAULT; | |
1200 | ||
1201 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1202 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
1203 | if (!attr || !init_attr) { | |
1204 | ret = -ENOMEM; | |
1205 | goto out; | |
1206 | } | |
1207 | ||
9ead190b RD |
1208 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1209 | if (!qp) { | |
7ccc9a24 | 1210 | ret = -EINVAL; |
9ead190b RD |
1211 | goto out; |
1212 | } | |
1213 | ||
1214 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 1215 | |
9ead190b | 1216 | put_qp_read(qp); |
7ccc9a24 DB |
1217 | |
1218 | if (ret) | |
1219 | goto out; | |
1220 | ||
1221 | memset(&resp, 0, sizeof resp); | |
1222 | ||
1223 | resp.qp_state = attr->qp_state; | |
1224 | resp.cur_qp_state = attr->cur_qp_state; | |
1225 | resp.path_mtu = attr->path_mtu; | |
1226 | resp.path_mig_state = attr->path_mig_state; | |
1227 | resp.qkey = attr->qkey; | |
1228 | resp.rq_psn = attr->rq_psn; | |
1229 | resp.sq_psn = attr->sq_psn; | |
1230 | resp.dest_qp_num = attr->dest_qp_num; | |
1231 | resp.qp_access_flags = attr->qp_access_flags; | |
1232 | resp.pkey_index = attr->pkey_index; | |
1233 | resp.alt_pkey_index = attr->alt_pkey_index; | |
0b26c88f | 1234 | resp.sq_draining = attr->sq_draining; |
7ccc9a24 DB |
1235 | resp.max_rd_atomic = attr->max_rd_atomic; |
1236 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1237 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1238 | resp.port_num = attr->port_num; | |
1239 | resp.timeout = attr->timeout; | |
1240 | resp.retry_cnt = attr->retry_cnt; | |
1241 | resp.rnr_retry = attr->rnr_retry; | |
1242 | resp.alt_port_num = attr->alt_port_num; | |
1243 | resp.alt_timeout = attr->alt_timeout; | |
1244 | ||
1245 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1246 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1247 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1248 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1249 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1250 | resp.dest.dlid = attr->ah_attr.dlid; | |
1251 | resp.dest.sl = attr->ah_attr.sl; | |
1252 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1253 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1254 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1255 | resp.dest.port_num = attr->ah_attr.port_num; | |
1256 | ||
1257 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1258 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1259 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1260 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1261 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1262 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1263 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1264 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1265 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1266 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1267 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1268 | ||
1269 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1270 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1271 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1272 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1273 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1274 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1275 | |
1276 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1277 | &resp, sizeof resp)) | |
1278 | ret = -EFAULT; | |
1279 | ||
1280 | out: | |
1281 | kfree(attr); | |
1282 | kfree(init_attr); | |
1283 | ||
1284 | return ret ? ret : in_len; | |
1285 | } | |
1286 | ||
bc38a6ab RD |
1287 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1288 | const char __user *buf, int in_len, | |
1289 | int out_len) | |
1290 | { | |
1291 | struct ib_uverbs_modify_qp cmd; | |
9bc57e2d | 1292 | struct ib_udata udata; |
bc38a6ab RD |
1293 | struct ib_qp *qp; |
1294 | struct ib_qp_attr *attr; | |
1295 | int ret; | |
1296 | ||
1297 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1298 | return -EFAULT; | |
1299 | ||
9bc57e2d RC |
1300 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
1301 | out_len); | |
1302 | ||
bc38a6ab RD |
1303 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
1304 | if (!attr) | |
1305 | return -ENOMEM; | |
1306 | ||
9ead190b RD |
1307 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1308 | if (!qp) { | |
bc38a6ab RD |
1309 | ret = -EINVAL; |
1310 | goto out; | |
1311 | } | |
1312 | ||
1313 | attr->qp_state = cmd.qp_state; | |
1314 | attr->cur_qp_state = cmd.cur_qp_state; | |
1315 | attr->path_mtu = cmd.path_mtu; | |
1316 | attr->path_mig_state = cmd.path_mig_state; | |
1317 | attr->qkey = cmd.qkey; | |
1318 | attr->rq_psn = cmd.rq_psn; | |
1319 | attr->sq_psn = cmd.sq_psn; | |
1320 | attr->dest_qp_num = cmd.dest_qp_num; | |
1321 | attr->qp_access_flags = cmd.qp_access_flags; | |
1322 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1323 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1324 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1325 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1326 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1327 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1328 | attr->port_num = cmd.port_num; | |
1329 | attr->timeout = cmd.timeout; | |
1330 | attr->retry_cnt = cmd.retry_cnt; | |
1331 | attr->rnr_retry = cmd.rnr_retry; | |
1332 | attr->alt_port_num = cmd.alt_port_num; | |
1333 | attr->alt_timeout = cmd.alt_timeout; | |
1334 | ||
1335 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1336 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1337 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1338 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1339 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1340 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1341 | attr->ah_attr.sl = cmd.dest.sl; | |
1342 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1343 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1344 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1345 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1346 | ||
1347 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1348 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1349 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1350 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1351 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1352 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1353 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1354 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1355 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1356 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1357 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1358 | ||
9bc57e2d | 1359 | ret = qp->device->modify_qp(qp, attr, cmd.attr_mask, &udata); |
9ead190b RD |
1360 | |
1361 | put_qp_read(qp); | |
1362 | ||
bc38a6ab RD |
1363 | if (ret) |
1364 | goto out; | |
1365 | ||
1366 | ret = in_len; | |
1367 | ||
1368 | out: | |
bc38a6ab RD |
1369 | kfree(attr); |
1370 | ||
1371 | return ret; | |
1372 | } | |
1373 | ||
1374 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1375 | const char __user *buf, int in_len, | |
1376 | int out_len) | |
1377 | { | |
63aaf647 RD |
1378 | struct ib_uverbs_destroy_qp cmd; |
1379 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 1380 | struct ib_uobject *uobj; |
63aaf647 | 1381 | struct ib_qp *qp; |
9ead190b | 1382 | struct ib_uqp_object *obj; |
63aaf647 | 1383 | int ret = -EINVAL; |
bc38a6ab RD |
1384 | |
1385 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1386 | return -EFAULT; | |
1387 | ||
63aaf647 RD |
1388 | memset(&resp, 0, sizeof resp); |
1389 | ||
9ead190b RD |
1390 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
1391 | if (!uobj) | |
1392 | return -EINVAL; | |
1393 | qp = uobj->object; | |
1394 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 1395 | |
9ead190b RD |
1396 | if (!list_empty(&obj->mcast_list)) { |
1397 | put_uobj_write(uobj); | |
1398 | return -EBUSY; | |
f4e40156 | 1399 | } |
bc38a6ab RD |
1400 | |
1401 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
1402 | if (!ret) |
1403 | uobj->live = 0; | |
1404 | ||
1405 | put_uobj_write(uobj); | |
1406 | ||
bc38a6ab | 1407 | if (ret) |
9ead190b | 1408 | return ret; |
bc38a6ab | 1409 | |
9ead190b | 1410 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 1411 | |
95ed644f | 1412 | mutex_lock(&file->mutex); |
9ead190b | 1413 | list_del(&uobj->list); |
95ed644f | 1414 | mutex_unlock(&file->mutex); |
bc38a6ab | 1415 | |
9ead190b | 1416 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 1417 | |
9ead190b | 1418 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 1419 | |
9ead190b | 1420 | put_uobj(uobj); |
bc38a6ab | 1421 | |
63aaf647 RD |
1422 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1423 | &resp, sizeof resp)) | |
9ead190b | 1424 | return -EFAULT; |
bc38a6ab | 1425 | |
9ead190b | 1426 | return in_len; |
bc38a6ab RD |
1427 | } |
1428 | ||
67cdb40c | 1429 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
1430 | const char __user *buf, int in_len, |
1431 | int out_len) | |
67cdb40c RD |
1432 | { |
1433 | struct ib_uverbs_post_send cmd; | |
1434 | struct ib_uverbs_post_send_resp resp; | |
1435 | struct ib_uverbs_send_wr *user_wr; | |
1436 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
1437 | struct ib_qp *qp; | |
1438 | int i, sg_ind; | |
9ead190b | 1439 | int is_ud; |
67cdb40c RD |
1440 | ssize_t ret = -EINVAL; |
1441 | ||
1442 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1443 | return -EFAULT; | |
1444 | ||
1445 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
1446 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
1447 | return -EINVAL; | |
1448 | ||
1449 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
1450 | return -EINVAL; | |
1451 | ||
1452 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
1453 | if (!user_wr) | |
1454 | return -ENOMEM; | |
1455 | ||
9ead190b RD |
1456 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1457 | if (!qp) | |
67cdb40c RD |
1458 | goto out; |
1459 | ||
9ead190b | 1460 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
1461 | sg_ind = 0; |
1462 | last = NULL; | |
1463 | for (i = 0; i < cmd.wr_count; ++i) { | |
1464 | if (copy_from_user(user_wr, | |
1465 | buf + sizeof cmd + i * cmd.wqe_size, | |
1466 | cmd.wqe_size)) { | |
1467 | ret = -EFAULT; | |
9ead190b | 1468 | goto out_put; |
67cdb40c RD |
1469 | } |
1470 | ||
1471 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
1472 | ret = -EINVAL; | |
9ead190b | 1473 | goto out_put; |
67cdb40c RD |
1474 | } |
1475 | ||
1476 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1477 | user_wr->num_sge * sizeof (struct ib_sge), | |
1478 | GFP_KERNEL); | |
1479 | if (!next) { | |
1480 | ret = -ENOMEM; | |
9ead190b | 1481 | goto out_put; |
67cdb40c RD |
1482 | } |
1483 | ||
1484 | if (!last) | |
1485 | wr = next; | |
1486 | else | |
1487 | last->next = next; | |
1488 | last = next; | |
1489 | ||
1490 | next->next = NULL; | |
1491 | next->wr_id = user_wr->wr_id; | |
1492 | next->num_sge = user_wr->num_sge; | |
1493 | next->opcode = user_wr->opcode; | |
1494 | next->send_flags = user_wr->send_flags; | |
67cdb40c | 1495 | |
9ead190b RD |
1496 | if (is_ud) { |
1497 | next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, | |
1498 | file->ucontext); | |
67cdb40c RD |
1499 | if (!next->wr.ud.ah) { |
1500 | ret = -EINVAL; | |
9ead190b | 1501 | goto out_put; |
67cdb40c RD |
1502 | } |
1503 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
1504 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
1505 | } else { | |
1506 | switch (next->opcode) { | |
67cdb40c | 1507 | case IB_WR_RDMA_WRITE_WITH_IMM: |
0f39cf3d RD |
1508 | next->ex.imm_data = |
1509 | (__be32 __force) user_wr->ex.imm_data; | |
1510 | case IB_WR_RDMA_WRITE: | |
67cdb40c RD |
1511 | case IB_WR_RDMA_READ: |
1512 | next->wr.rdma.remote_addr = | |
1513 | user_wr->wr.rdma.remote_addr; | |
1514 | next->wr.rdma.rkey = | |
1515 | user_wr->wr.rdma.rkey; | |
1516 | break; | |
0f39cf3d RD |
1517 | case IB_WR_SEND_WITH_IMM: |
1518 | next->ex.imm_data = | |
1519 | (__be32 __force) user_wr->ex.imm_data; | |
1520 | break; | |
1521 | case IB_WR_SEND_WITH_INV: | |
1522 | next->ex.invalidate_rkey = | |
1523 | user_wr->ex.invalidate_rkey; | |
1524 | break; | |
67cdb40c RD |
1525 | case IB_WR_ATOMIC_CMP_AND_SWP: |
1526 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
1527 | next->wr.atomic.remote_addr = | |
1528 | user_wr->wr.atomic.remote_addr; | |
1529 | next->wr.atomic.compare_add = | |
1530 | user_wr->wr.atomic.compare_add; | |
1531 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
1532 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
1533 | break; | |
1534 | default: | |
1535 | break; | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | if (next->num_sge) { | |
1540 | next->sg_list = (void *) next + | |
1541 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1542 | if (copy_from_user(next->sg_list, | |
1543 | buf + sizeof cmd + | |
1544 | cmd.wr_count * cmd.wqe_size + | |
1545 | sg_ind * sizeof (struct ib_sge), | |
1546 | next->num_sge * sizeof (struct ib_sge))) { | |
1547 | ret = -EFAULT; | |
9ead190b | 1548 | goto out_put; |
67cdb40c RD |
1549 | } |
1550 | sg_ind += next->num_sge; | |
1551 | } else | |
1552 | next->sg_list = NULL; | |
1553 | } | |
1554 | ||
1555 | resp.bad_wr = 0; | |
1556 | ret = qp->device->post_send(qp, wr, &bad_wr); | |
1557 | if (ret) | |
1558 | for (next = wr; next; next = next->next) { | |
1559 | ++resp.bad_wr; | |
1560 | if (next == bad_wr) | |
1561 | break; | |
1562 | } | |
1563 | ||
1564 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1565 | &resp, sizeof resp)) | |
1566 | ret = -EFAULT; | |
1567 | ||
9ead190b RD |
1568 | out_put: |
1569 | put_qp_read(qp); | |
67cdb40c RD |
1570 | |
1571 | while (wr) { | |
9ead190b RD |
1572 | if (is_ud && wr->wr.ud.ah) |
1573 | put_ah_read(wr->wr.ud.ah); | |
67cdb40c RD |
1574 | next = wr->next; |
1575 | kfree(wr); | |
1576 | wr = next; | |
1577 | } | |
1578 | ||
18320828 | 1579 | out: |
67cdb40c RD |
1580 | kfree(user_wr); |
1581 | ||
1582 | return ret ? ret : in_len; | |
1583 | } | |
1584 | ||
1585 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
1586 | int in_len, | |
1587 | u32 wr_count, | |
1588 | u32 sge_count, | |
1589 | u32 wqe_size) | |
1590 | { | |
1591 | struct ib_uverbs_recv_wr *user_wr; | |
1592 | struct ib_recv_wr *wr = NULL, *last, *next; | |
1593 | int sg_ind; | |
1594 | int i; | |
1595 | int ret; | |
1596 | ||
1597 | if (in_len < wqe_size * wr_count + | |
1598 | sge_count * sizeof (struct ib_uverbs_sge)) | |
1599 | return ERR_PTR(-EINVAL); | |
1600 | ||
1601 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
1602 | return ERR_PTR(-EINVAL); | |
1603 | ||
1604 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
1605 | if (!user_wr) | |
1606 | return ERR_PTR(-ENOMEM); | |
1607 | ||
1608 | sg_ind = 0; | |
1609 | last = NULL; | |
1610 | for (i = 0; i < wr_count; ++i) { | |
1611 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
1612 | wqe_size)) { | |
1613 | ret = -EFAULT; | |
1614 | goto err; | |
1615 | } | |
1616 | ||
1617 | if (user_wr->num_sge + sg_ind > sge_count) { | |
1618 | ret = -EINVAL; | |
1619 | goto err; | |
1620 | } | |
1621 | ||
1622 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1623 | user_wr->num_sge * sizeof (struct ib_sge), | |
1624 | GFP_KERNEL); | |
1625 | if (!next) { | |
1626 | ret = -ENOMEM; | |
1627 | goto err; | |
1628 | } | |
1629 | ||
1630 | if (!last) | |
1631 | wr = next; | |
1632 | else | |
1633 | last->next = next; | |
1634 | last = next; | |
1635 | ||
1636 | next->next = NULL; | |
1637 | next->wr_id = user_wr->wr_id; | |
1638 | next->num_sge = user_wr->num_sge; | |
1639 | ||
1640 | if (next->num_sge) { | |
1641 | next->sg_list = (void *) next + | |
1642 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
1643 | if (copy_from_user(next->sg_list, | |
1644 | buf + wr_count * wqe_size + | |
1645 | sg_ind * sizeof (struct ib_sge), | |
1646 | next->num_sge * sizeof (struct ib_sge))) { | |
1647 | ret = -EFAULT; | |
1648 | goto err; | |
1649 | } | |
1650 | sg_ind += next->num_sge; | |
1651 | } else | |
1652 | next->sg_list = NULL; | |
1653 | } | |
1654 | ||
1655 | kfree(user_wr); | |
1656 | return wr; | |
1657 | ||
1658 | err: | |
1659 | kfree(user_wr); | |
1660 | ||
1661 | while (wr) { | |
1662 | next = wr->next; | |
1663 | kfree(wr); | |
1664 | wr = next; | |
1665 | } | |
1666 | ||
1667 | return ERR_PTR(ret); | |
1668 | } | |
1669 | ||
1670 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1671 | const char __user *buf, int in_len, |
1672 | int out_len) | |
67cdb40c RD |
1673 | { |
1674 | struct ib_uverbs_post_recv cmd; | |
1675 | struct ib_uverbs_post_recv_resp resp; | |
1676 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1677 | struct ib_qp *qp; | |
1678 | ssize_t ret = -EINVAL; | |
1679 | ||
1680 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1681 | return -EFAULT; | |
1682 | ||
1683 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1684 | in_len - sizeof cmd, cmd.wr_count, | |
1685 | cmd.sge_count, cmd.wqe_size); | |
1686 | if (IS_ERR(wr)) | |
1687 | return PTR_ERR(wr); | |
1688 | ||
9ead190b RD |
1689 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1690 | if (!qp) | |
67cdb40c RD |
1691 | goto out; |
1692 | ||
1693 | resp.bad_wr = 0; | |
1694 | ret = qp->device->post_recv(qp, wr, &bad_wr); | |
9ead190b RD |
1695 | |
1696 | put_qp_read(qp); | |
1697 | ||
67cdb40c RD |
1698 | if (ret) |
1699 | for (next = wr; next; next = next->next) { | |
1700 | ++resp.bad_wr; | |
1701 | if (next == bad_wr) | |
1702 | break; | |
1703 | } | |
1704 | ||
67cdb40c RD |
1705 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1706 | &resp, sizeof resp)) | |
1707 | ret = -EFAULT; | |
1708 | ||
1709 | out: | |
67cdb40c RD |
1710 | while (wr) { |
1711 | next = wr->next; | |
1712 | kfree(wr); | |
1713 | wr = next; | |
1714 | } | |
1715 | ||
1716 | return ret ? ret : in_len; | |
1717 | } | |
1718 | ||
1719 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
1720 | const char __user *buf, int in_len, |
1721 | int out_len) | |
67cdb40c RD |
1722 | { |
1723 | struct ib_uverbs_post_srq_recv cmd; | |
1724 | struct ib_uverbs_post_srq_recv_resp resp; | |
1725 | struct ib_recv_wr *wr, *next, *bad_wr; | |
1726 | struct ib_srq *srq; | |
1727 | ssize_t ret = -EINVAL; | |
1728 | ||
1729 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1730 | return -EFAULT; | |
1731 | ||
1732 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
1733 | in_len - sizeof cmd, cmd.wr_count, | |
1734 | cmd.sge_count, cmd.wqe_size); | |
1735 | if (IS_ERR(wr)) | |
1736 | return PTR_ERR(wr); | |
1737 | ||
9ead190b RD |
1738 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
1739 | if (!srq) | |
67cdb40c RD |
1740 | goto out; |
1741 | ||
1742 | resp.bad_wr = 0; | |
1743 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
1744 | |
1745 | put_srq_read(srq); | |
1746 | ||
67cdb40c RD |
1747 | if (ret) |
1748 | for (next = wr; next; next = next->next) { | |
1749 | ++resp.bad_wr; | |
1750 | if (next == bad_wr) | |
1751 | break; | |
1752 | } | |
1753 | ||
67cdb40c RD |
1754 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1755 | &resp, sizeof resp)) | |
1756 | ret = -EFAULT; | |
1757 | ||
1758 | out: | |
67cdb40c RD |
1759 | while (wr) { |
1760 | next = wr->next; | |
1761 | kfree(wr); | |
1762 | wr = next; | |
1763 | } | |
1764 | ||
1765 | return ret ? ret : in_len; | |
1766 | } | |
1767 | ||
1768 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
1769 | const char __user *buf, int in_len, | |
1770 | int out_len) | |
1771 | { | |
1772 | struct ib_uverbs_create_ah cmd; | |
1773 | struct ib_uverbs_create_ah_resp resp; | |
1774 | struct ib_uobject *uobj; | |
1775 | struct ib_pd *pd; | |
1776 | struct ib_ah *ah; | |
1777 | struct ib_ah_attr attr; | |
1778 | int ret; | |
1779 | ||
1780 | if (out_len < sizeof resp) | |
1781 | return -ENOSPC; | |
1782 | ||
1783 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1784 | return -EFAULT; | |
1785 | ||
1786 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
1787 | if (!uobj) | |
1788 | return -ENOMEM; | |
1789 | ||
43db2bc0 | 1790 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_key); |
9ead190b | 1791 | down_write(&uobj->mutex); |
67cdb40c | 1792 | |
9ead190b RD |
1793 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
1794 | if (!pd) { | |
67cdb40c | 1795 | ret = -EINVAL; |
9ead190b | 1796 | goto err; |
67cdb40c RD |
1797 | } |
1798 | ||
67cdb40c RD |
1799 | attr.dlid = cmd.attr.dlid; |
1800 | attr.sl = cmd.attr.sl; | |
1801 | attr.src_path_bits = cmd.attr.src_path_bits; | |
1802 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 1803 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
1804 | attr.port_num = cmd.attr.port_num; |
1805 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
1806 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
1807 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
1808 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
1809 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
1810 | ||
1811 | ah = ib_create_ah(pd, &attr); | |
1812 | if (IS_ERR(ah)) { | |
1813 | ret = PTR_ERR(ah); | |
ec924b47 | 1814 | goto err_put; |
67cdb40c RD |
1815 | } |
1816 | ||
9ead190b RD |
1817 | ah->uobject = uobj; |
1818 | uobj->object = ah; | |
67cdb40c | 1819 | |
9ead190b | 1820 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
1821 | if (ret) |
1822 | goto err_destroy; | |
1823 | ||
1824 | resp.ah_handle = uobj->id; | |
1825 | ||
1826 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1827 | &resp, sizeof resp)) { | |
1828 | ret = -EFAULT; | |
9ead190b | 1829 | goto err_copy; |
67cdb40c RD |
1830 | } |
1831 | ||
9ead190b RD |
1832 | put_pd_read(pd); |
1833 | ||
95ed644f | 1834 | mutex_lock(&file->mutex); |
67cdb40c | 1835 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 1836 | mutex_unlock(&file->mutex); |
67cdb40c | 1837 | |
9ead190b RD |
1838 | uobj->live = 1; |
1839 | ||
1840 | up_write(&uobj->mutex); | |
67cdb40c RD |
1841 | |
1842 | return in_len; | |
1843 | ||
9ead190b RD |
1844 | err_copy: |
1845 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
1846 | |
1847 | err_destroy: | |
1848 | ib_destroy_ah(ah); | |
1849 | ||
ec924b47 MT |
1850 | err_put: |
1851 | put_pd_read(pd); | |
1852 | ||
9ead190b RD |
1853 | err: |
1854 | put_uobj_write(uobj); | |
67cdb40c RD |
1855 | return ret; |
1856 | } | |
1857 | ||
1858 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
1859 | const char __user *buf, int in_len, int out_len) | |
1860 | { | |
1861 | struct ib_uverbs_destroy_ah cmd; | |
1862 | struct ib_ah *ah; | |
1863 | struct ib_uobject *uobj; | |
9ead190b | 1864 | int ret; |
67cdb40c RD |
1865 | |
1866 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1867 | return -EFAULT; | |
1868 | ||
9ead190b RD |
1869 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
1870 | if (!uobj) | |
1871 | return -EINVAL; | |
1872 | ah = uobj->object; | |
67cdb40c | 1873 | |
9ead190b RD |
1874 | ret = ib_destroy_ah(ah); |
1875 | if (!ret) | |
1876 | uobj->live = 0; | |
67cdb40c | 1877 | |
9ead190b | 1878 | put_uobj_write(uobj); |
67cdb40c | 1879 | |
67cdb40c | 1880 | if (ret) |
9ead190b | 1881 | return ret; |
67cdb40c | 1882 | |
9ead190b | 1883 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 1884 | |
95ed644f | 1885 | mutex_lock(&file->mutex); |
67cdb40c | 1886 | list_del(&uobj->list); |
95ed644f | 1887 | mutex_unlock(&file->mutex); |
67cdb40c | 1888 | |
9ead190b | 1889 | put_uobj(uobj); |
67cdb40c | 1890 | |
9ead190b | 1891 | return in_len; |
67cdb40c RD |
1892 | } |
1893 | ||
bc38a6ab RD |
1894 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
1895 | const char __user *buf, int in_len, | |
1896 | int out_len) | |
1897 | { | |
1898 | struct ib_uverbs_attach_mcast cmd; | |
1899 | struct ib_qp *qp; | |
9ead190b | 1900 | struct ib_uqp_object *obj; |
f4e40156 | 1901 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 1902 | int ret; |
bc38a6ab RD |
1903 | |
1904 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1905 | return -EFAULT; | |
1906 | ||
9ead190b RD |
1907 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1908 | if (!qp) | |
1909 | return -EINVAL; | |
f4e40156 | 1910 | |
9ead190b | 1911 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 1912 | |
9ead190b | 1913 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
1914 | if (cmd.mlid == mcast->lid && |
1915 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1916 | ret = 0; | |
9ead190b | 1917 | goto out_put; |
f4e40156 JM |
1918 | } |
1919 | ||
1920 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
1921 | if (!mcast) { | |
1922 | ret = -ENOMEM; | |
9ead190b | 1923 | goto out_put; |
f4e40156 JM |
1924 | } |
1925 | ||
1926 | mcast->lid = cmd.mlid; | |
1927 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 1928 | |
f4e40156 | 1929 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
1930 | if (!ret) |
1931 | list_add_tail(&mcast->list, &obj->mcast_list); | |
1932 | else | |
f4e40156 JM |
1933 | kfree(mcast); |
1934 | ||
9ead190b RD |
1935 | out_put: |
1936 | put_qp_read(qp); | |
bc38a6ab RD |
1937 | |
1938 | return ret ? ret : in_len; | |
1939 | } | |
1940 | ||
1941 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
1942 | const char __user *buf, int in_len, | |
1943 | int out_len) | |
1944 | { | |
1945 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 1946 | struct ib_uqp_object *obj; |
bc38a6ab | 1947 | struct ib_qp *qp; |
f4e40156 | 1948 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
1949 | int ret = -EINVAL; |
1950 | ||
1951 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1952 | return -EFAULT; | |
1953 | ||
9ead190b RD |
1954 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1955 | if (!qp) | |
1956 | return -EINVAL; | |
bc38a6ab | 1957 | |
f4e40156 JM |
1958 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
1959 | if (ret) | |
9ead190b | 1960 | goto out_put; |
f4e40156 | 1961 | |
9ead190b | 1962 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 1963 | |
9ead190b | 1964 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
1965 | if (cmd.mlid == mcast->lid && |
1966 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
1967 | list_del(&mcast->list); | |
1968 | kfree(mcast); | |
1969 | break; | |
1970 | } | |
1971 | ||
9ead190b RD |
1972 | out_put: |
1973 | put_qp_read(qp); | |
bc38a6ab RD |
1974 | |
1975 | return ret ? ret : in_len; | |
1976 | } | |
f520ba5a RD |
1977 | |
1978 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, | |
1979 | const char __user *buf, int in_len, | |
1980 | int out_len) | |
1981 | { | |
1982 | struct ib_uverbs_create_srq cmd; | |
1983 | struct ib_uverbs_create_srq_resp resp; | |
1984 | struct ib_udata udata; | |
9ead190b | 1985 | struct ib_uevent_object *obj; |
f520ba5a RD |
1986 | struct ib_pd *pd; |
1987 | struct ib_srq *srq; | |
1988 | struct ib_srq_init_attr attr; | |
1989 | int ret; | |
1990 | ||
1991 | if (out_len < sizeof resp) | |
1992 | return -ENOSPC; | |
1993 | ||
1994 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1995 | return -EFAULT; | |
1996 | ||
1997 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1998 | (unsigned long) cmd.response + sizeof resp, | |
1999 | in_len - sizeof cmd, out_len - sizeof resp); | |
2000 | ||
9ead190b RD |
2001 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
2002 | if (!obj) | |
f520ba5a RD |
2003 | return -ENOMEM; |
2004 | ||
43db2bc0 | 2005 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &srq_lock_key); |
9ead190b | 2006 | down_write(&obj->uobject.mutex); |
f520ba5a | 2007 | |
9ead190b RD |
2008 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
2009 | if (!pd) { | |
f520ba5a | 2010 | ret = -EINVAL; |
9ead190b | 2011 | goto err; |
f520ba5a RD |
2012 | } |
2013 | ||
2014 | attr.event_handler = ib_uverbs_srq_event_handler; | |
2015 | attr.srq_context = file; | |
2016 | attr.attr.max_wr = cmd.max_wr; | |
2017 | attr.attr.max_sge = cmd.max_sge; | |
2018 | attr.attr.srq_limit = cmd.srq_limit; | |
2019 | ||
9ead190b RD |
2020 | obj->events_reported = 0; |
2021 | INIT_LIST_HEAD(&obj->event_list); | |
f520ba5a RD |
2022 | |
2023 | srq = pd->device->create_srq(pd, &attr, &udata); | |
2024 | if (IS_ERR(srq)) { | |
2025 | ret = PTR_ERR(srq); | |
ec924b47 | 2026 | goto err_put; |
f520ba5a RD |
2027 | } |
2028 | ||
2029 | srq->device = pd->device; | |
2030 | srq->pd = pd; | |
9ead190b | 2031 | srq->uobject = &obj->uobject; |
f520ba5a RD |
2032 | srq->event_handler = attr.event_handler; |
2033 | srq->srq_context = attr.srq_context; | |
2034 | atomic_inc(&pd->usecnt); | |
2035 | atomic_set(&srq->usecnt, 0); | |
2036 | ||
9ead190b RD |
2037 | obj->uobject.object = srq; |
2038 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uobject); | |
f520ba5a RD |
2039 | if (ret) |
2040 | goto err_destroy; | |
2041 | ||
9ead190b RD |
2042 | memset(&resp, 0, sizeof resp); |
2043 | resp.srq_handle = obj->uobject.id; | |
ea88fd16 DB |
2044 | resp.max_wr = attr.attr.max_wr; |
2045 | resp.max_sge = attr.attr.max_sge; | |
f520ba5a | 2046 | |
f520ba5a RD |
2047 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2048 | &resp, sizeof resp)) { | |
2049 | ret = -EFAULT; | |
9ead190b | 2050 | goto err_copy; |
f520ba5a RD |
2051 | } |
2052 | ||
9ead190b RD |
2053 | put_pd_read(pd); |
2054 | ||
95ed644f | 2055 | mutex_lock(&file->mutex); |
9ead190b | 2056 | list_add_tail(&obj->uobject.list, &file->ucontext->srq_list); |
95ed644f | 2057 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 2058 | |
9ead190b RD |
2059 | obj->uobject.live = 1; |
2060 | ||
2061 | up_write(&obj->uobject.mutex); | |
f520ba5a RD |
2062 | |
2063 | return in_len; | |
2064 | ||
9ead190b RD |
2065 | err_copy: |
2066 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uobject); | |
f520ba5a RD |
2067 | |
2068 | err_destroy: | |
2069 | ib_destroy_srq(srq); | |
2070 | ||
ec924b47 MT |
2071 | err_put: |
2072 | put_pd_read(pd); | |
2073 | ||
9ead190b RD |
2074 | err: |
2075 | put_uobj_write(&obj->uobject); | |
f520ba5a RD |
2076 | return ret; |
2077 | } | |
2078 | ||
2079 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, | |
2080 | const char __user *buf, int in_len, | |
2081 | int out_len) | |
2082 | { | |
2083 | struct ib_uverbs_modify_srq cmd; | |
9bc57e2d | 2084 | struct ib_udata udata; |
f520ba5a RD |
2085 | struct ib_srq *srq; |
2086 | struct ib_srq_attr attr; | |
2087 | int ret; | |
2088 | ||
2089 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2090 | return -EFAULT; | |
2091 | ||
9bc57e2d RC |
2092 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
2093 | out_len); | |
2094 | ||
9ead190b RD |
2095 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2096 | if (!srq) | |
2097 | return -EINVAL; | |
f520ba5a RD |
2098 | |
2099 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
2100 | attr.srq_limit = cmd.srq_limit; |
2101 | ||
9bc57e2d | 2102 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
f520ba5a | 2103 | |
9ead190b | 2104 | put_srq_read(srq); |
f520ba5a RD |
2105 | |
2106 | return ret ? ret : in_len; | |
2107 | } | |
2108 | ||
8bdb0e86 DB |
2109 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
2110 | const char __user *buf, | |
2111 | int in_len, int out_len) | |
2112 | { | |
2113 | struct ib_uverbs_query_srq cmd; | |
2114 | struct ib_uverbs_query_srq_resp resp; | |
2115 | struct ib_srq_attr attr; | |
2116 | struct ib_srq *srq; | |
2117 | int ret; | |
2118 | ||
2119 | if (out_len < sizeof resp) | |
2120 | return -ENOSPC; | |
2121 | ||
2122 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2123 | return -EFAULT; | |
2124 | ||
9ead190b RD |
2125 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2126 | if (!srq) | |
2127 | return -EINVAL; | |
8bdb0e86 | 2128 | |
9ead190b | 2129 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 2130 | |
9ead190b | 2131 | put_srq_read(srq); |
8bdb0e86 DB |
2132 | |
2133 | if (ret) | |
9ead190b | 2134 | return ret; |
8bdb0e86 DB |
2135 | |
2136 | memset(&resp, 0, sizeof resp); | |
2137 | ||
2138 | resp.max_wr = attr.max_wr; | |
2139 | resp.max_sge = attr.max_sge; | |
2140 | resp.srq_limit = attr.srq_limit; | |
2141 | ||
2142 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2143 | &resp, sizeof resp)) | |
9ead190b | 2144 | return -EFAULT; |
8bdb0e86 | 2145 | |
9ead190b | 2146 | return in_len; |
8bdb0e86 DB |
2147 | } |
2148 | ||
f520ba5a RD |
2149 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
2150 | const char __user *buf, int in_len, | |
2151 | int out_len) | |
2152 | { | |
63aaf647 RD |
2153 | struct ib_uverbs_destroy_srq cmd; |
2154 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 2155 | struct ib_uobject *uobj; |
63aaf647 | 2156 | struct ib_srq *srq; |
9ead190b | 2157 | struct ib_uevent_object *obj; |
63aaf647 | 2158 | int ret = -EINVAL; |
f520ba5a RD |
2159 | |
2160 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2161 | return -EFAULT; | |
2162 | ||
9ead190b RD |
2163 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
2164 | if (!uobj) | |
2165 | return -EINVAL; | |
2166 | srq = uobj->object; | |
2167 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
63aaf647 | 2168 | |
9ead190b RD |
2169 | ret = ib_destroy_srq(srq); |
2170 | if (!ret) | |
2171 | uobj->live = 0; | |
f520ba5a | 2172 | |
9ead190b | 2173 | put_uobj_write(uobj); |
f520ba5a | 2174 | |
f520ba5a | 2175 | if (ret) |
9ead190b | 2176 | return ret; |
f520ba5a | 2177 | |
9ead190b | 2178 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 2179 | |
95ed644f | 2180 | mutex_lock(&file->mutex); |
9ead190b | 2181 | list_del(&uobj->list); |
95ed644f | 2182 | mutex_unlock(&file->mutex); |
f520ba5a | 2183 | |
9ead190b | 2184 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 2185 | |
9ead190b RD |
2186 | memset(&resp, 0, sizeof resp); |
2187 | resp.events_reported = obj->events_reported; | |
63aaf647 | 2188 | |
9ead190b | 2189 | put_uobj(uobj); |
f520ba5a | 2190 | |
63aaf647 RD |
2191 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2192 | &resp, sizeof resp)) | |
2193 | ret = -EFAULT; | |
2194 | ||
f520ba5a RD |
2195 | return ret ? ret : in_len; |
2196 | } |