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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 | ||
3bea57a5 RD |
44 | struct uverbs_lock_class { |
45 | struct lock_class_key key; | |
46 | char name[16]; | |
47 | }; | |
48 | ||
49 | static struct uverbs_lock_class pd_lock_class = { .name = "PD-uobj" }; | |
50 | static struct uverbs_lock_class mr_lock_class = { .name = "MR-uobj" }; | |
51 | static struct uverbs_lock_class cq_lock_class = { .name = "CQ-uobj" }; | |
52 | static struct uverbs_lock_class qp_lock_class = { .name = "QP-uobj" }; | |
53 | static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" }; | |
54 | static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" }; | |
55 | static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" }; | |
43db2bc0 | 56 | |
bc38a6ab RD |
57 | #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ |
58 | do { \ | |
59 | (udata)->inbuf = (void __user *) (ibuf); \ | |
60 | (udata)->outbuf = (void __user *) (obuf); \ | |
61 | (udata)->inlen = (ilen); \ | |
62 | (udata)->outlen = (olen); \ | |
63 | } while (0) | |
64 | ||
9ead190b RD |
65 | /* |
66 | * The ib_uobject locking scheme is as follows: | |
67 | * | |
68 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it | |
69 | * needs to be held during all idr operations. When an object is | |
70 | * looked up, a reference must be taken on the object's kref before | |
71 | * dropping this lock. | |
72 | * | |
73 | * - Each object also has an rwsem. This rwsem must be held for | |
74 | * reading while an operation that uses the object is performed. | |
75 | * For example, while registering an MR, the associated PD's | |
76 | * uobject.mutex must be held for reading. The rwsem must be held | |
77 | * for writing while initializing or destroying an object. | |
78 | * | |
79 | * - In addition, each object has a "live" flag. If this flag is not | |
80 | * set, then lookups of the object will fail even if it is found in | |
81 | * the idr. This handles a reader that blocks and does not acquire | |
82 | * the rwsem until after the object is destroyed. The destroy | |
83 | * operation will set the live flag to 0 and then drop the rwsem; | |
84 | * this will allow the reader to acquire the rwsem, see that the | |
85 | * live flag is 0, and then drop the rwsem and its reference to | |
86 | * object. The underlying storage will not be freed until the last | |
87 | * reference to the object is dropped. | |
88 | */ | |
89 | ||
90 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, | |
3bea57a5 | 91 | struct ib_ucontext *context, struct uverbs_lock_class *c) |
9ead190b RD |
92 | { |
93 | uobj->user_handle = user_handle; | |
94 | uobj->context = context; | |
95 | kref_init(&uobj->ref); | |
96 | init_rwsem(&uobj->mutex); | |
3bea57a5 | 97 | lockdep_set_class_and_name(&uobj->mutex, &c->key, c->name); |
9ead190b RD |
98 | uobj->live = 0; |
99 | } | |
100 | ||
101 | static void release_uobj(struct kref *kref) | |
102 | { | |
103 | kfree(container_of(kref, struct ib_uobject, ref)); | |
104 | } | |
105 | ||
106 | static void put_uobj(struct ib_uobject *uobj) | |
107 | { | |
108 | kref_put(&uobj->ref, release_uobj); | |
109 | } | |
110 | ||
111 | static void put_uobj_read(struct ib_uobject *uobj) | |
112 | { | |
113 | up_read(&uobj->mutex); | |
114 | put_uobj(uobj); | |
115 | } | |
116 | ||
117 | static void put_uobj_write(struct ib_uobject *uobj) | |
118 | { | |
119 | up_write(&uobj->mutex); | |
120 | put_uobj(uobj); | |
121 | } | |
122 | ||
123 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) | |
3463175d RD |
124 | { |
125 | int ret; | |
126 | ||
127 | retry: | |
128 | if (!idr_pre_get(idr, GFP_KERNEL)) | |
129 | return -ENOMEM; | |
130 | ||
9ead190b | 131 | spin_lock(&ib_uverbs_idr_lock); |
3463175d | 132 | ret = idr_get_new(idr, uobj, &uobj->id); |
9ead190b | 133 | spin_unlock(&ib_uverbs_idr_lock); |
3463175d RD |
134 | |
135 | if (ret == -EAGAIN) | |
136 | goto retry; | |
137 | ||
138 | return ret; | |
139 | } | |
140 | ||
9ead190b RD |
141 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
142 | { | |
143 | spin_lock(&ib_uverbs_idr_lock); | |
144 | idr_remove(idr, uobj->id); | |
145 | spin_unlock(&ib_uverbs_idr_lock); | |
146 | } | |
147 | ||
148 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, | |
149 | struct ib_ucontext *context) | |
150 | { | |
151 | struct ib_uobject *uobj; | |
152 | ||
153 | spin_lock(&ib_uverbs_idr_lock); | |
154 | uobj = idr_find(idr, id); | |
cbfb50e6 RD |
155 | if (uobj) { |
156 | if (uobj->context == context) | |
157 | kref_get(&uobj->ref); | |
158 | else | |
159 | uobj = NULL; | |
160 | } | |
9ead190b RD |
161 | spin_unlock(&ib_uverbs_idr_lock); |
162 | ||
163 | return uobj; | |
164 | } | |
165 | ||
166 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, | |
1ccf6aa1 | 167 | struct ib_ucontext *context, int nested) |
9ead190b RD |
168 | { |
169 | struct ib_uobject *uobj; | |
170 | ||
171 | uobj = __idr_get_uobj(idr, id, context); | |
172 | if (!uobj) | |
173 | return NULL; | |
174 | ||
1ccf6aa1 RD |
175 | if (nested) |
176 | down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING); | |
177 | else | |
178 | down_read(&uobj->mutex); | |
9ead190b RD |
179 | if (!uobj->live) { |
180 | put_uobj_read(uobj); | |
181 | return NULL; | |
182 | } | |
183 | ||
184 | return uobj; | |
185 | } | |
186 | ||
187 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, | |
188 | struct ib_ucontext *context) | |
189 | { | |
190 | struct ib_uobject *uobj; | |
191 | ||
192 | uobj = __idr_get_uobj(idr, id, context); | |
193 | if (!uobj) | |
194 | return NULL; | |
195 | ||
196 | down_write(&uobj->mutex); | |
197 | if (!uobj->live) { | |
198 | put_uobj_write(uobj); | |
199 | return NULL; | |
200 | } | |
201 | ||
202 | return uobj; | |
203 | } | |
204 | ||
1ccf6aa1 RD |
205 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context, |
206 | int nested) | |
9ead190b RD |
207 | { |
208 | struct ib_uobject *uobj; | |
209 | ||
1ccf6aa1 | 210 | uobj = idr_read_uobj(idr, id, context, nested); |
9ead190b RD |
211 | return uobj ? uobj->object : NULL; |
212 | } | |
213 | ||
214 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) | |
215 | { | |
1ccf6aa1 | 216 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0); |
9ead190b RD |
217 | } |
218 | ||
219 | static void put_pd_read(struct ib_pd *pd) | |
220 | { | |
221 | put_uobj_read(pd->uobject); | |
222 | } | |
223 | ||
1ccf6aa1 | 224 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested) |
9ead190b | 225 | { |
1ccf6aa1 | 226 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested); |
9ead190b RD |
227 | } |
228 | ||
229 | static void put_cq_read(struct ib_cq *cq) | |
230 | { | |
231 | put_uobj_read(cq->uobject); | |
232 | } | |
233 | ||
234 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) | |
235 | { | |
1ccf6aa1 | 236 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0); |
9ead190b RD |
237 | } |
238 | ||
239 | static void put_ah_read(struct ib_ah *ah) | |
240 | { | |
241 | put_uobj_read(ah->uobject); | |
242 | } | |
243 | ||
244 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) | |
245 | { | |
1ccf6aa1 | 246 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0); |
9ead190b RD |
247 | } |
248 | ||
e214a0fe EC |
249 | static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context) |
250 | { | |
251 | struct ib_uobject *uobj; | |
252 | ||
253 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context); | |
254 | return uobj ? uobj->object : NULL; | |
255 | } | |
256 | ||
9ead190b RD |
257 | static void put_qp_read(struct ib_qp *qp) |
258 | { | |
259 | put_uobj_read(qp->uobject); | |
260 | } | |
261 | ||
e214a0fe EC |
262 | static void put_qp_write(struct ib_qp *qp) |
263 | { | |
264 | put_uobj_write(qp->uobject); | |
265 | } | |
266 | ||
9ead190b RD |
267 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) |
268 | { | |
1ccf6aa1 | 269 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0); |
9ead190b RD |
270 | } |
271 | ||
272 | static void put_srq_read(struct ib_srq *srq) | |
273 | { | |
274 | put_uobj_read(srq->uobject); | |
275 | } | |
276 | ||
53d0bd1e SH |
277 | static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context, |
278 | struct ib_uobject **uobj) | |
279 | { | |
280 | *uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0); | |
281 | return *uobj ? (*uobj)->object : NULL; | |
282 | } | |
283 | ||
284 | static void put_xrcd_read(struct ib_uobject *uobj) | |
285 | { | |
286 | put_uobj_read(uobj); | |
287 | } | |
288 | ||
bc38a6ab RD |
289 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
290 | const char __user *buf, | |
291 | int in_len, int out_len) | |
292 | { | |
293 | struct ib_uverbs_get_context cmd; | |
294 | struct ib_uverbs_get_context_resp resp; | |
295 | struct ib_udata udata; | |
296 | struct ib_device *ibdev = file->device->ib_dev; | |
63c47c28 | 297 | struct ib_ucontext *ucontext; |
6b73597e | 298 | struct file *filp; |
63c47c28 | 299 | int ret; |
bc38a6ab RD |
300 | |
301 | if (out_len < sizeof resp) | |
302 | return -ENOSPC; | |
303 | ||
304 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
305 | return -EFAULT; | |
306 | ||
95ed644f | 307 | mutex_lock(&file->mutex); |
63c47c28 RD |
308 | |
309 | if (file->ucontext) { | |
310 | ret = -EINVAL; | |
311 | goto err; | |
312 | } | |
313 | ||
bc38a6ab RD |
314 | INIT_UDATA(&udata, buf + sizeof cmd, |
315 | (unsigned long) cmd.response + sizeof resp, | |
316 | in_len - sizeof cmd, out_len - sizeof resp); | |
317 | ||
63c47c28 | 318 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
77f76013 | 319 | if (IS_ERR(ucontext)) { |
df42245a | 320 | ret = PTR_ERR(ucontext); |
77f76013 GC |
321 | goto err; |
322 | } | |
bc38a6ab | 323 | |
63c47c28 RD |
324 | ucontext->device = ibdev; |
325 | INIT_LIST_HEAD(&ucontext->pd_list); | |
326 | INIT_LIST_HEAD(&ucontext->mr_list); | |
327 | INIT_LIST_HEAD(&ucontext->mw_list); | |
328 | INIT_LIST_HEAD(&ucontext->cq_list); | |
329 | INIT_LIST_HEAD(&ucontext->qp_list); | |
330 | INIT_LIST_HEAD(&ucontext->srq_list); | |
331 | INIT_LIST_HEAD(&ucontext->ah_list); | |
53d0bd1e | 332 | INIT_LIST_HEAD(&ucontext->xrcd_list); |
f7c6a7b5 | 333 | ucontext->closing = 0; |
bc38a6ab | 334 | |
6b73597e RD |
335 | resp.num_comp_vectors = file->device->num_comp_vectors; |
336 | ||
b1e4594b AV |
337 | ret = get_unused_fd(); |
338 | if (ret < 0) | |
339 | goto err_free; | |
340 | resp.async_fd = ret; | |
341 | ||
342 | filp = ib_uverbs_alloc_event_file(file, 1); | |
6b73597e RD |
343 | if (IS_ERR(filp)) { |
344 | ret = PTR_ERR(filp); | |
b1e4594b | 345 | goto err_fd; |
6b73597e | 346 | } |
bc38a6ab RD |
347 | |
348 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
349 | &resp, sizeof resp)) { |
350 | ret = -EFAULT; | |
6b73597e | 351 | goto err_file; |
63c47c28 RD |
352 | } |
353 | ||
6b73597e RD |
354 | file->async_file = filp->private_data; |
355 | ||
356 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
357 | ib_uverbs_event_handler); | |
358 | ret = ib_register_event_handler(&file->event_handler); | |
359 | if (ret) | |
360 | goto err_file; | |
361 | ||
362 | kref_get(&file->async_file->ref); | |
363 | kref_get(&file->ref); | |
70a30e16 | 364 | file->ucontext = ucontext; |
6b73597e RD |
365 | |
366 | fd_install(resp.async_fd, filp); | |
367 | ||
95ed644f | 368 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
369 | |
370 | return in_len; | |
371 | ||
6b73597e | 372 | err_file: |
6b73597e RD |
373 | fput(filp); |
374 | ||
b1e4594b AV |
375 | err_fd: |
376 | put_unused_fd(resp.async_fd); | |
377 | ||
63c47c28 RD |
378 | err_free: |
379 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 380 | |
63c47c28 | 381 | err: |
95ed644f | 382 | mutex_unlock(&file->mutex); |
63c47c28 | 383 | return ret; |
bc38a6ab RD |
384 | } |
385 | ||
386 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
387 | const char __user *buf, | |
388 | int in_len, int out_len) | |
389 | { | |
390 | struct ib_uverbs_query_device cmd; | |
391 | struct ib_uverbs_query_device_resp resp; | |
392 | struct ib_device_attr attr; | |
393 | int ret; | |
394 | ||
395 | if (out_len < sizeof resp) | |
396 | return -ENOSPC; | |
397 | ||
398 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
399 | return -EFAULT; | |
400 | ||
401 | ret = ib_query_device(file->device->ib_dev, &attr); | |
402 | if (ret) | |
403 | return ret; | |
404 | ||
405 | memset(&resp, 0, sizeof resp); | |
406 | ||
407 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 408 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
409 | resp.sys_image_guid = attr.sys_image_guid; |
410 | resp.max_mr_size = attr.max_mr_size; | |
411 | resp.page_size_cap = attr.page_size_cap; | |
412 | resp.vendor_id = attr.vendor_id; | |
413 | resp.vendor_part_id = attr.vendor_part_id; | |
414 | resp.hw_ver = attr.hw_ver; | |
415 | resp.max_qp = attr.max_qp; | |
416 | resp.max_qp_wr = attr.max_qp_wr; | |
417 | resp.device_cap_flags = attr.device_cap_flags; | |
418 | resp.max_sge = attr.max_sge; | |
419 | resp.max_sge_rd = attr.max_sge_rd; | |
420 | resp.max_cq = attr.max_cq; | |
421 | resp.max_cqe = attr.max_cqe; | |
422 | resp.max_mr = attr.max_mr; | |
423 | resp.max_pd = attr.max_pd; | |
424 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
425 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
426 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
427 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
428 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
429 | resp.atomic_cap = attr.atomic_cap; | |
430 | resp.max_ee = attr.max_ee; | |
431 | resp.max_rdd = attr.max_rdd; | |
432 | resp.max_mw = attr.max_mw; | |
433 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
434 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
435 | resp.max_mcast_grp = attr.max_mcast_grp; | |
436 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
437 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
438 | resp.max_ah = attr.max_ah; | |
439 | resp.max_fmr = attr.max_fmr; | |
440 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
441 | resp.max_srq = attr.max_srq; | |
442 | resp.max_srq_wr = attr.max_srq_wr; | |
443 | resp.max_srq_sge = attr.max_srq_sge; | |
444 | resp.max_pkeys = attr.max_pkeys; | |
445 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
446 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
447 | ||
448 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
449 | &resp, sizeof resp)) | |
450 | return -EFAULT; | |
451 | ||
452 | return in_len; | |
453 | } | |
454 | ||
455 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
456 | const char __user *buf, | |
457 | int in_len, int out_len) | |
458 | { | |
459 | struct ib_uverbs_query_port cmd; | |
460 | struct ib_uverbs_query_port_resp resp; | |
461 | struct ib_port_attr attr; | |
462 | int ret; | |
463 | ||
464 | if (out_len < sizeof resp) | |
465 | return -ENOSPC; | |
466 | ||
467 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
468 | return -EFAULT; | |
469 | ||
470 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
471 | if (ret) | |
472 | return ret; | |
473 | ||
474 | memset(&resp, 0, sizeof resp); | |
475 | ||
476 | resp.state = attr.state; | |
477 | resp.max_mtu = attr.max_mtu; | |
478 | resp.active_mtu = attr.active_mtu; | |
479 | resp.gid_tbl_len = attr.gid_tbl_len; | |
480 | resp.port_cap_flags = attr.port_cap_flags; | |
481 | resp.max_msg_sz = attr.max_msg_sz; | |
482 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
483 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
484 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
485 | resp.lid = attr.lid; | |
486 | resp.sm_lid = attr.sm_lid; | |
487 | resp.lmc = attr.lmc; | |
488 | resp.max_vl_num = attr.max_vl_num; | |
489 | resp.sm_sl = attr.sm_sl; | |
490 | resp.subnet_timeout = attr.subnet_timeout; | |
491 | resp.init_type_reply = attr.init_type_reply; | |
492 | resp.active_width = attr.active_width; | |
493 | resp.active_speed = attr.active_speed; | |
494 | resp.phys_state = attr.phys_state; | |
2420b60b EC |
495 | resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev, |
496 | cmd.port_num); | |
bc38a6ab RD |
497 | |
498 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
499 | &resp, sizeof resp)) | |
500 | return -EFAULT; | |
501 | ||
502 | return in_len; | |
503 | } | |
504 | ||
bc38a6ab RD |
505 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
506 | const char __user *buf, | |
507 | int in_len, int out_len) | |
508 | { | |
509 | struct ib_uverbs_alloc_pd cmd; | |
510 | struct ib_uverbs_alloc_pd_resp resp; | |
511 | struct ib_udata udata; | |
512 | struct ib_uobject *uobj; | |
513 | struct ib_pd *pd; | |
514 | int ret; | |
515 | ||
516 | if (out_len < sizeof resp) | |
517 | return -ENOSPC; | |
518 | ||
519 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
520 | return -EFAULT; | |
521 | ||
522 | INIT_UDATA(&udata, buf + sizeof cmd, | |
523 | (unsigned long) cmd.response + sizeof resp, | |
524 | in_len - sizeof cmd, out_len - sizeof resp); | |
525 | ||
526 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
527 | if (!uobj) | |
528 | return -ENOMEM; | |
529 | ||
3bea57a5 | 530 | init_uobj(uobj, 0, file->ucontext, &pd_lock_class); |
9ead190b | 531 | down_write(&uobj->mutex); |
bc38a6ab RD |
532 | |
533 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
534 | file->ucontext, &udata); | |
535 | if (IS_ERR(pd)) { | |
536 | ret = PTR_ERR(pd); | |
537 | goto err; | |
538 | } | |
539 | ||
540 | pd->device = file->device->ib_dev; | |
541 | pd->uobject = uobj; | |
542 | atomic_set(&pd->usecnt, 0); | |
543 | ||
9ead190b RD |
544 | uobj->object = pd; |
545 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 546 | if (ret) |
9ead190b | 547 | goto err_idr; |
bc38a6ab RD |
548 | |
549 | memset(&resp, 0, sizeof resp); | |
550 | resp.pd_handle = uobj->id; | |
551 | ||
552 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
553 | &resp, sizeof resp)) { | |
554 | ret = -EFAULT; | |
9ead190b | 555 | goto err_copy; |
bc38a6ab RD |
556 | } |
557 | ||
95ed644f | 558 | mutex_lock(&file->mutex); |
eb9d3cd5 | 559 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 560 | mutex_unlock(&file->mutex); |
bc38a6ab | 561 | |
9ead190b RD |
562 | uobj->live = 1; |
563 | ||
564 | up_write(&uobj->mutex); | |
bc38a6ab | 565 | |
eb9d3cd5 RD |
566 | return in_len; |
567 | ||
9ead190b RD |
568 | err_copy: |
569 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 570 | |
9ead190b | 571 | err_idr: |
bc38a6ab RD |
572 | ib_dealloc_pd(pd); |
573 | ||
574 | err: | |
9ead190b | 575 | put_uobj_write(uobj); |
bc38a6ab RD |
576 | return ret; |
577 | } | |
578 | ||
579 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
580 | const char __user *buf, | |
581 | int in_len, int out_len) | |
582 | { | |
583 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 584 | struct ib_uobject *uobj; |
9ead190b | 585 | int ret; |
bc38a6ab RD |
586 | |
587 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
588 | return -EFAULT; | |
589 | ||
9ead190b RD |
590 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
591 | if (!uobj) | |
592 | return -EINVAL; | |
bc38a6ab | 593 | |
9ead190b RD |
594 | ret = ib_dealloc_pd(uobj->object); |
595 | if (!ret) | |
596 | uobj->live = 0; | |
bc38a6ab | 597 | |
9ead190b | 598 | put_uobj_write(uobj); |
bc38a6ab | 599 | |
bc38a6ab | 600 | if (ret) |
9ead190b | 601 | return ret; |
bc38a6ab | 602 | |
9ead190b | 603 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 604 | |
95ed644f | 605 | mutex_lock(&file->mutex); |
bc38a6ab | 606 | list_del(&uobj->list); |
95ed644f | 607 | mutex_unlock(&file->mutex); |
bc38a6ab | 608 | |
9ead190b | 609 | put_uobj(uobj); |
bc38a6ab | 610 | |
9ead190b | 611 | return in_len; |
bc38a6ab RD |
612 | } |
613 | ||
53d0bd1e SH |
614 | struct xrcd_table_entry { |
615 | struct rb_node node; | |
616 | struct ib_xrcd *xrcd; | |
617 | struct inode *inode; | |
618 | }; | |
619 | ||
620 | static int xrcd_table_insert(struct ib_uverbs_device *dev, | |
621 | struct inode *inode, | |
622 | struct ib_xrcd *xrcd) | |
623 | { | |
624 | struct xrcd_table_entry *entry, *scan; | |
625 | struct rb_node **p = &dev->xrcd_tree.rb_node; | |
626 | struct rb_node *parent = NULL; | |
627 | ||
628 | entry = kmalloc(sizeof *entry, GFP_KERNEL); | |
629 | if (!entry) | |
630 | return -ENOMEM; | |
631 | ||
632 | entry->xrcd = xrcd; | |
633 | entry->inode = inode; | |
634 | ||
635 | while (*p) { | |
636 | parent = *p; | |
637 | scan = rb_entry(parent, struct xrcd_table_entry, node); | |
638 | ||
639 | if (inode < scan->inode) { | |
640 | p = &(*p)->rb_left; | |
641 | } else if (inode > scan->inode) { | |
642 | p = &(*p)->rb_right; | |
643 | } else { | |
644 | kfree(entry); | |
645 | return -EEXIST; | |
646 | } | |
647 | } | |
648 | ||
649 | rb_link_node(&entry->node, parent, p); | |
650 | rb_insert_color(&entry->node, &dev->xrcd_tree); | |
651 | igrab(inode); | |
652 | return 0; | |
653 | } | |
654 | ||
655 | static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, | |
656 | struct inode *inode) | |
657 | { | |
658 | struct xrcd_table_entry *entry; | |
659 | struct rb_node *p = dev->xrcd_tree.rb_node; | |
660 | ||
661 | while (p) { | |
662 | entry = rb_entry(p, struct xrcd_table_entry, node); | |
663 | ||
664 | if (inode < entry->inode) | |
665 | p = p->rb_left; | |
666 | else if (inode > entry->inode) | |
667 | p = p->rb_right; | |
668 | else | |
669 | return entry; | |
670 | } | |
671 | ||
672 | return NULL; | |
673 | } | |
674 | ||
675 | static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) | |
676 | { | |
677 | struct xrcd_table_entry *entry; | |
678 | ||
679 | entry = xrcd_table_search(dev, inode); | |
680 | if (!entry) | |
681 | return NULL; | |
682 | ||
683 | return entry->xrcd; | |
684 | } | |
685 | ||
686 | static void xrcd_table_delete(struct ib_uverbs_device *dev, | |
687 | struct inode *inode) | |
688 | { | |
689 | struct xrcd_table_entry *entry; | |
690 | ||
691 | entry = xrcd_table_search(dev, inode); | |
692 | if (entry) { | |
693 | iput(inode); | |
694 | rb_erase(&entry->node, &dev->xrcd_tree); | |
695 | kfree(entry); | |
696 | } | |
697 | } | |
698 | ||
699 | ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, | |
700 | const char __user *buf, int in_len, | |
701 | int out_len) | |
702 | { | |
703 | struct ib_uverbs_open_xrcd cmd; | |
704 | struct ib_uverbs_open_xrcd_resp resp; | |
705 | struct ib_udata udata; | |
706 | struct ib_uxrcd_object *obj; | |
707 | struct ib_xrcd *xrcd = NULL; | |
2903ff01 | 708 | struct fd f = {NULL, 0}; |
53d0bd1e | 709 | struct inode *inode = NULL; |
2903ff01 | 710 | int ret = 0; |
53d0bd1e SH |
711 | int new_xrcd = 0; |
712 | ||
713 | if (out_len < sizeof resp) | |
714 | return -ENOSPC; | |
715 | ||
716 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
717 | return -EFAULT; | |
718 | ||
719 | INIT_UDATA(&udata, buf + sizeof cmd, | |
720 | (unsigned long) cmd.response + sizeof resp, | |
721 | in_len - sizeof cmd, out_len - sizeof resp); | |
722 | ||
723 | mutex_lock(&file->device->xrcd_tree_mutex); | |
724 | ||
725 | if (cmd.fd != -1) { | |
726 | /* search for file descriptor */ | |
2903ff01 AV |
727 | f = fdget(cmd.fd); |
728 | if (!f.file) { | |
53d0bd1e SH |
729 | ret = -EBADF; |
730 | goto err_tree_mutex_unlock; | |
731 | } | |
732 | ||
496ad9aa | 733 | inode = file_inode(f.file); |
53d0bd1e SH |
734 | xrcd = find_xrcd(file->device, inode); |
735 | if (!xrcd && !(cmd.oflags & O_CREAT)) { | |
736 | /* no file descriptor. Need CREATE flag */ | |
737 | ret = -EAGAIN; | |
738 | goto err_tree_mutex_unlock; | |
739 | } | |
740 | ||
741 | if (xrcd && cmd.oflags & O_EXCL) { | |
742 | ret = -EINVAL; | |
743 | goto err_tree_mutex_unlock; | |
744 | } | |
745 | } | |
746 | ||
747 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
748 | if (!obj) { | |
749 | ret = -ENOMEM; | |
750 | goto err_tree_mutex_unlock; | |
751 | } | |
752 | ||
3bea57a5 | 753 | init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_class); |
53d0bd1e SH |
754 | |
755 | down_write(&obj->uobject.mutex); | |
756 | ||
757 | if (!xrcd) { | |
758 | xrcd = file->device->ib_dev->alloc_xrcd(file->device->ib_dev, | |
759 | file->ucontext, &udata); | |
760 | if (IS_ERR(xrcd)) { | |
761 | ret = PTR_ERR(xrcd); | |
762 | goto err; | |
763 | } | |
764 | ||
765 | xrcd->inode = inode; | |
766 | xrcd->device = file->device->ib_dev; | |
767 | atomic_set(&xrcd->usecnt, 0); | |
768 | mutex_init(&xrcd->tgt_qp_mutex); | |
769 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
770 | new_xrcd = 1; | |
771 | } | |
772 | ||
773 | atomic_set(&obj->refcnt, 0); | |
774 | obj->uobject.object = xrcd; | |
775 | ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
776 | if (ret) | |
777 | goto err_idr; | |
778 | ||
779 | memset(&resp, 0, sizeof resp); | |
780 | resp.xrcd_handle = obj->uobject.id; | |
781 | ||
782 | if (inode) { | |
783 | if (new_xrcd) { | |
784 | /* create new inode/xrcd table entry */ | |
785 | ret = xrcd_table_insert(file->device, inode, xrcd); | |
786 | if (ret) | |
787 | goto err_insert_xrcd; | |
788 | } | |
789 | atomic_inc(&xrcd->usecnt); | |
790 | } | |
791 | ||
792 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
793 | &resp, sizeof resp)) { | |
794 | ret = -EFAULT; | |
795 | goto err_copy; | |
796 | } | |
797 | ||
2903ff01 AV |
798 | if (f.file) |
799 | fdput(f); | |
53d0bd1e SH |
800 | |
801 | mutex_lock(&file->mutex); | |
802 | list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list); | |
803 | mutex_unlock(&file->mutex); | |
804 | ||
805 | obj->uobject.live = 1; | |
806 | up_write(&obj->uobject.mutex); | |
807 | ||
808 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
809 | return in_len; | |
810 | ||
811 | err_copy: | |
812 | if (inode) { | |
813 | if (new_xrcd) | |
814 | xrcd_table_delete(file->device, inode); | |
815 | atomic_dec(&xrcd->usecnt); | |
816 | } | |
817 | ||
818 | err_insert_xrcd: | |
819 | idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
820 | ||
821 | err_idr: | |
822 | ib_dealloc_xrcd(xrcd); | |
823 | ||
824 | err: | |
825 | put_uobj_write(&obj->uobject); | |
826 | ||
827 | err_tree_mutex_unlock: | |
2903ff01 AV |
828 | if (f.file) |
829 | fdput(f); | |
53d0bd1e SH |
830 | |
831 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
832 | ||
833 | return ret; | |
834 | } | |
835 | ||
836 | ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, | |
837 | const char __user *buf, int in_len, | |
838 | int out_len) | |
839 | { | |
840 | struct ib_uverbs_close_xrcd cmd; | |
841 | struct ib_uobject *uobj; | |
842 | struct ib_xrcd *xrcd = NULL; | |
843 | struct inode *inode = NULL; | |
844 | struct ib_uxrcd_object *obj; | |
845 | int live; | |
846 | int ret = 0; | |
847 | ||
848 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
849 | return -EFAULT; | |
850 | ||
851 | mutex_lock(&file->device->xrcd_tree_mutex); | |
852 | uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext); | |
853 | if (!uobj) { | |
854 | ret = -EINVAL; | |
855 | goto out; | |
856 | } | |
857 | ||
858 | xrcd = uobj->object; | |
859 | inode = xrcd->inode; | |
860 | obj = container_of(uobj, struct ib_uxrcd_object, uobject); | |
861 | if (atomic_read(&obj->refcnt)) { | |
862 | put_uobj_write(uobj); | |
863 | ret = -EBUSY; | |
864 | goto out; | |
865 | } | |
866 | ||
867 | if (!inode || atomic_dec_and_test(&xrcd->usecnt)) { | |
868 | ret = ib_dealloc_xrcd(uobj->object); | |
869 | if (!ret) | |
870 | uobj->live = 0; | |
871 | } | |
872 | ||
873 | live = uobj->live; | |
874 | if (inode && ret) | |
875 | atomic_inc(&xrcd->usecnt); | |
876 | ||
877 | put_uobj_write(uobj); | |
878 | ||
879 | if (ret) | |
880 | goto out; | |
881 | ||
882 | if (inode && !live) | |
883 | xrcd_table_delete(file->device, inode); | |
884 | ||
885 | idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj); | |
886 | mutex_lock(&file->mutex); | |
887 | list_del(&uobj->list); | |
888 | mutex_unlock(&file->mutex); | |
889 | ||
890 | put_uobj(uobj); | |
891 | ret = in_len; | |
892 | ||
893 | out: | |
894 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
895 | return ret; | |
896 | } | |
897 | ||
898 | void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, | |
899 | struct ib_xrcd *xrcd) | |
900 | { | |
901 | struct inode *inode; | |
902 | ||
903 | inode = xrcd->inode; | |
904 | if (inode && !atomic_dec_and_test(&xrcd->usecnt)) | |
905 | return; | |
906 | ||
907 | ib_dealloc_xrcd(xrcd); | |
908 | ||
909 | if (inode) | |
910 | xrcd_table_delete(dev, inode); | |
911 | } | |
912 | ||
bc38a6ab RD |
913 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, |
914 | const char __user *buf, int in_len, | |
915 | int out_len) | |
916 | { | |
917 | struct ib_uverbs_reg_mr cmd; | |
918 | struct ib_uverbs_reg_mr_resp resp; | |
919 | struct ib_udata udata; | |
f7c6a7b5 | 920 | struct ib_uobject *uobj; |
bc38a6ab RD |
921 | struct ib_pd *pd; |
922 | struct ib_mr *mr; | |
923 | int ret; | |
924 | ||
925 | if (out_len < sizeof resp) | |
926 | return -ENOSPC; | |
927 | ||
928 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
929 | return -EFAULT; | |
930 | ||
931 | INIT_UDATA(&udata, buf + sizeof cmd, | |
932 | (unsigned long) cmd.response + sizeof resp, | |
933 | in_len - sizeof cmd, out_len - sizeof resp); | |
934 | ||
935 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
936 | return -EINVAL; | |
937 | ||
f575394f RD |
938 | /* |
939 | * Local write permission is required if remote write or | |
940 | * remote atomic permission is also requested. | |
941 | */ | |
942 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
943 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) | |
944 | return -EINVAL; | |
945 | ||
f7c6a7b5 RD |
946 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
947 | if (!uobj) | |
bc38a6ab RD |
948 | return -ENOMEM; |
949 | ||
3bea57a5 | 950 | init_uobj(uobj, 0, file->ucontext, &mr_lock_class); |
f7c6a7b5 | 951 | down_write(&uobj->mutex); |
bc38a6ab | 952 | |
9ead190b | 953 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
aaf1aef5 RD |
954 | if (!pd) { |
955 | ret = -EINVAL; | |
f7c6a7b5 | 956 | goto err_free; |
aaf1aef5 | 957 | } |
bc38a6ab | 958 | |
f7c6a7b5 RD |
959 | mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
960 | cmd.access_flags, &udata); | |
bc38a6ab RD |
961 | if (IS_ERR(mr)) { |
962 | ret = PTR_ERR(mr); | |
9ead190b | 963 | goto err_put; |
bc38a6ab RD |
964 | } |
965 | ||
966 | mr->device = pd->device; | |
967 | mr->pd = pd; | |
f7c6a7b5 | 968 | mr->uobject = uobj; |
bc38a6ab RD |
969 | atomic_inc(&pd->usecnt); |
970 | atomic_set(&mr->usecnt, 0); | |
971 | ||
f7c6a7b5 RD |
972 | uobj->object = mr; |
973 | ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); | |
bc38a6ab RD |
974 | if (ret) |
975 | goto err_unreg; | |
976 | ||
9ead190b RD |
977 | memset(&resp, 0, sizeof resp); |
978 | resp.lkey = mr->lkey; | |
979 | resp.rkey = mr->rkey; | |
f7c6a7b5 | 980 | resp.mr_handle = uobj->id; |
bc38a6ab | 981 | |
bc38a6ab RD |
982 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
983 | &resp, sizeof resp)) { | |
984 | ret = -EFAULT; | |
9ead190b | 985 | goto err_copy; |
bc38a6ab RD |
986 | } |
987 | ||
9ead190b RD |
988 | put_pd_read(pd); |
989 | ||
95ed644f | 990 | mutex_lock(&file->mutex); |
f7c6a7b5 | 991 | list_add_tail(&uobj->list, &file->ucontext->mr_list); |
95ed644f | 992 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 993 | |
f7c6a7b5 | 994 | uobj->live = 1; |
9ead190b | 995 | |
f7c6a7b5 | 996 | up_write(&uobj->mutex); |
bc38a6ab RD |
997 | |
998 | return in_len; | |
999 | ||
9ead190b | 1000 | err_copy: |
f7c6a7b5 | 1001 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab RD |
1002 | |
1003 | err_unreg: | |
1004 | ib_dereg_mr(mr); | |
1005 | ||
9ead190b RD |
1006 | err_put: |
1007 | put_pd_read(pd); | |
bc38a6ab | 1008 | |
bc38a6ab | 1009 | err_free: |
f7c6a7b5 | 1010 | put_uobj_write(uobj); |
bc38a6ab RD |
1011 | return ret; |
1012 | } | |
1013 | ||
1014 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
1015 | const char __user *buf, int in_len, | |
1016 | int out_len) | |
1017 | { | |
1018 | struct ib_uverbs_dereg_mr cmd; | |
1019 | struct ib_mr *mr; | |
9ead190b | 1020 | struct ib_uobject *uobj; |
bc38a6ab RD |
1021 | int ret = -EINVAL; |
1022 | ||
1023 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1024 | return -EFAULT; | |
1025 | ||
9ead190b RD |
1026 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
1027 | if (!uobj) | |
1028 | return -EINVAL; | |
bc38a6ab | 1029 | |
f7c6a7b5 | 1030 | mr = uobj->object; |
bc38a6ab RD |
1031 | |
1032 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
1033 | if (!ret) |
1034 | uobj->live = 0; | |
1035 | ||
1036 | put_uobj_write(uobj); | |
1037 | ||
bc38a6ab | 1038 | if (ret) |
9ead190b | 1039 | return ret; |
bc38a6ab | 1040 | |
9ead190b | 1041 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 1042 | |
95ed644f | 1043 | mutex_lock(&file->mutex); |
9ead190b | 1044 | list_del(&uobj->list); |
95ed644f | 1045 | mutex_unlock(&file->mutex); |
bc38a6ab | 1046 | |
9ead190b | 1047 | put_uobj(uobj); |
bc38a6ab | 1048 | |
9ead190b | 1049 | return in_len; |
bc38a6ab RD |
1050 | } |
1051 | ||
6b73597e RD |
1052 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
1053 | const char __user *buf, int in_len, | |
1054 | int out_len) | |
1055 | { | |
1056 | struct ib_uverbs_create_comp_channel cmd; | |
1057 | struct ib_uverbs_create_comp_channel_resp resp; | |
1058 | struct file *filp; | |
b1e4594b | 1059 | int ret; |
6b73597e RD |
1060 | |
1061 | if (out_len < sizeof resp) | |
1062 | return -ENOSPC; | |
1063 | ||
1064 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1065 | return -EFAULT; | |
1066 | ||
b1e4594b AV |
1067 | ret = get_unused_fd(); |
1068 | if (ret < 0) | |
1069 | return ret; | |
1070 | resp.fd = ret; | |
1071 | ||
1072 | filp = ib_uverbs_alloc_event_file(file, 0); | |
1073 | if (IS_ERR(filp)) { | |
1074 | put_unused_fd(resp.fd); | |
6b73597e | 1075 | return PTR_ERR(filp); |
b1e4594b | 1076 | } |
6b73597e RD |
1077 | |
1078 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1079 | &resp, sizeof resp)) { | |
1080 | put_unused_fd(resp.fd); | |
1081 | fput(filp); | |
1082 | return -EFAULT; | |
1083 | } | |
1084 | ||
1085 | fd_install(resp.fd, filp); | |
1086 | return in_len; | |
1087 | } | |
1088 | ||
bc38a6ab RD |
1089 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
1090 | const char __user *buf, int in_len, | |
1091 | int out_len) | |
1092 | { | |
1093 | struct ib_uverbs_create_cq cmd; | |
1094 | struct ib_uverbs_create_cq_resp resp; | |
1095 | struct ib_udata udata; | |
9ead190b | 1096 | struct ib_ucq_object *obj; |
6b73597e | 1097 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
1098 | struct ib_cq *cq; |
1099 | int ret; | |
1100 | ||
1101 | if (out_len < sizeof resp) | |
1102 | return -ENOSPC; | |
1103 | ||
1104 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1105 | return -EFAULT; | |
1106 | ||
1107 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1108 | (unsigned long) cmd.response + sizeof resp, | |
1109 | in_len - sizeof cmd, out_len - sizeof resp); | |
1110 | ||
6b73597e | 1111 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
bc38a6ab RD |
1112 | return -EINVAL; |
1113 | ||
9ead190b RD |
1114 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1115 | if (!obj) | |
bc38a6ab RD |
1116 | return -ENOMEM; |
1117 | ||
3bea57a5 | 1118 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &cq_lock_class); |
9ead190b RD |
1119 | down_write(&obj->uobject.mutex); |
1120 | ||
ac4e7b35 JM |
1121 | if (cmd.comp_channel >= 0) { |
1122 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); | |
1123 | if (!ev_file) { | |
1124 | ret = -EINVAL; | |
1125 | goto err; | |
1126 | } | |
1127 | } | |
1128 | ||
9ead190b RD |
1129 | obj->uverbs_file = file; |
1130 | obj->comp_events_reported = 0; | |
1131 | obj->async_events_reported = 0; | |
1132 | INIT_LIST_HEAD(&obj->comp_list); | |
1133 | INIT_LIST_HEAD(&obj->async_list); | |
bc38a6ab RD |
1134 | |
1135 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, | |
f4fd0b22 | 1136 | cmd.comp_vector, |
bc38a6ab RD |
1137 | file->ucontext, &udata); |
1138 | if (IS_ERR(cq)) { | |
1139 | ret = PTR_ERR(cq); | |
9ead190b | 1140 | goto err_file; |
bc38a6ab RD |
1141 | } |
1142 | ||
1143 | cq->device = file->device->ib_dev; | |
9ead190b | 1144 | cq->uobject = &obj->uobject; |
bc38a6ab RD |
1145 | cq->comp_handler = ib_uverbs_comp_handler; |
1146 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 1147 | cq->cq_context = ev_file; |
bc38a6ab RD |
1148 | atomic_set(&cq->usecnt, 0); |
1149 | ||
9ead190b RD |
1150 | obj->uobject.object = cq; |
1151 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
bc38a6ab | 1152 | if (ret) |
9ead190b | 1153 | goto err_free; |
bc38a6ab RD |
1154 | |
1155 | memset(&resp, 0, sizeof resp); | |
9ead190b | 1156 | resp.cq_handle = obj->uobject.id; |
bc38a6ab RD |
1157 | resp.cqe = cq->cqe; |
1158 | ||
1159 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1160 | &resp, sizeof resp)) { | |
1161 | ret = -EFAULT; | |
9ead190b | 1162 | goto err_copy; |
bc38a6ab RD |
1163 | } |
1164 | ||
95ed644f | 1165 | mutex_lock(&file->mutex); |
9ead190b | 1166 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 1167 | mutex_unlock(&file->mutex); |
bc38a6ab | 1168 | |
9ead190b RD |
1169 | obj->uobject.live = 1; |
1170 | ||
1171 | up_write(&obj->uobject.mutex); | |
bc38a6ab | 1172 | |
eb9d3cd5 RD |
1173 | return in_len; |
1174 | ||
9ead190b RD |
1175 | err_copy: |
1176 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
eb9d3cd5 | 1177 | |
9ead190b | 1178 | err_free: |
bc38a6ab RD |
1179 | ib_destroy_cq(cq); |
1180 | ||
9ead190b | 1181 | err_file: |
ac4e7b35 | 1182 | if (ev_file) |
9ead190b RD |
1183 | ib_uverbs_release_ucq(file, ev_file, obj); |
1184 | ||
1185 | err: | |
1186 | put_uobj_write(&obj->uobject); | |
bc38a6ab RD |
1187 | return ret; |
1188 | } | |
1189 | ||
33b9b3ee RD |
1190 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
1191 | const char __user *buf, int in_len, | |
1192 | int out_len) | |
1193 | { | |
1194 | struct ib_uverbs_resize_cq cmd; | |
1195 | struct ib_uverbs_resize_cq_resp resp; | |
1196 | struct ib_udata udata; | |
1197 | struct ib_cq *cq; | |
1198 | int ret = -EINVAL; | |
1199 | ||
1200 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1201 | return -EFAULT; | |
1202 | ||
1203 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1204 | (unsigned long) cmd.response + sizeof resp, | |
1205 | in_len - sizeof cmd, out_len - sizeof resp); | |
1206 | ||
1ccf6aa1 | 1207 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
9ead190b RD |
1208 | if (!cq) |
1209 | return -EINVAL; | |
33b9b3ee RD |
1210 | |
1211 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
1212 | if (ret) | |
1213 | goto out; | |
1214 | ||
33b9b3ee RD |
1215 | resp.cqe = cq->cqe; |
1216 | ||
1217 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
64f817ba | 1218 | &resp, sizeof resp.cqe)) |
33b9b3ee RD |
1219 | ret = -EFAULT; |
1220 | ||
1221 | out: | |
9ead190b | 1222 | put_cq_read(cq); |
33b9b3ee RD |
1223 | |
1224 | return ret ? ret : in_len; | |
1225 | } | |
1226 | ||
7182afea DC |
1227 | static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) |
1228 | { | |
1229 | struct ib_uverbs_wc tmp; | |
1230 | ||
1231 | tmp.wr_id = wc->wr_id; | |
1232 | tmp.status = wc->status; | |
1233 | tmp.opcode = wc->opcode; | |
1234 | tmp.vendor_err = wc->vendor_err; | |
1235 | tmp.byte_len = wc->byte_len; | |
1236 | tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; | |
1237 | tmp.qp_num = wc->qp->qp_num; | |
1238 | tmp.src_qp = wc->src_qp; | |
1239 | tmp.wc_flags = wc->wc_flags; | |
1240 | tmp.pkey_index = wc->pkey_index; | |
1241 | tmp.slid = wc->slid; | |
1242 | tmp.sl = wc->sl; | |
1243 | tmp.dlid_path_bits = wc->dlid_path_bits; | |
1244 | tmp.port_num = wc->port_num; | |
1245 | tmp.reserved = 0; | |
1246 | ||
1247 | if (copy_to_user(dest, &tmp, sizeof tmp)) | |
1248 | return -EFAULT; | |
1249 | ||
1250 | return 0; | |
1251 | } | |
1252 | ||
67cdb40c RD |
1253 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
1254 | const char __user *buf, int in_len, | |
1255 | int out_len) | |
1256 | { | |
1257 | struct ib_uverbs_poll_cq cmd; | |
7182afea DC |
1258 | struct ib_uverbs_poll_cq_resp resp; |
1259 | u8 __user *header_ptr; | |
1260 | u8 __user *data_ptr; | |
67cdb40c | 1261 | struct ib_cq *cq; |
7182afea DC |
1262 | struct ib_wc wc; |
1263 | int ret; | |
67cdb40c RD |
1264 | |
1265 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1266 | return -EFAULT; | |
1267 | ||
1ccf6aa1 | 1268 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
7182afea DC |
1269 | if (!cq) |
1270 | return -EINVAL; | |
67cdb40c | 1271 | |
7182afea DC |
1272 | /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
1273 | header_ptr = (void __user *)(unsigned long) cmd.response; | |
1274 | data_ptr = header_ptr + sizeof resp; | |
9ead190b | 1275 | |
7182afea DC |
1276 | memset(&resp, 0, sizeof resp); |
1277 | while (resp.count < cmd.ne) { | |
1278 | ret = ib_poll_cq(cq, 1, &wc); | |
1279 | if (ret < 0) | |
1280 | goto out_put; | |
1281 | if (!ret) | |
1282 | break; | |
1283 | ||
1284 | ret = copy_wc_to_user(data_ptr, &wc); | |
1285 | if (ret) | |
1286 | goto out_put; | |
1287 | ||
1288 | data_ptr += sizeof(struct ib_uverbs_wc); | |
1289 | ++resp.count; | |
67cdb40c RD |
1290 | } |
1291 | ||
7182afea | 1292 | if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
67cdb40c | 1293 | ret = -EFAULT; |
7182afea DC |
1294 | goto out_put; |
1295 | } | |
67cdb40c | 1296 | |
7182afea | 1297 | ret = in_len; |
67cdb40c | 1298 | |
7182afea DC |
1299 | out_put: |
1300 | put_cq_read(cq); | |
1301 | return ret; | |
67cdb40c RD |
1302 | } |
1303 | ||
1304 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
1305 | const char __user *buf, int in_len, | |
1306 | int out_len) | |
1307 | { | |
1308 | struct ib_uverbs_req_notify_cq cmd; | |
1309 | struct ib_cq *cq; | |
67cdb40c RD |
1310 | |
1311 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1312 | return -EFAULT; | |
1313 | ||
1ccf6aa1 | 1314 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 1315 | if (!cq) |
9ead190b | 1316 | return -EINVAL; |
67cdb40c | 1317 | |
9ead190b RD |
1318 | ib_req_notify_cq(cq, cmd.solicited_only ? |
1319 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
1320 | ||
ab108676 | 1321 | put_cq_read(cq); |
9ead190b RD |
1322 | |
1323 | return in_len; | |
67cdb40c RD |
1324 | } |
1325 | ||
bc38a6ab RD |
1326 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
1327 | const char __user *buf, int in_len, | |
1328 | int out_len) | |
1329 | { | |
63aaf647 RD |
1330 | struct ib_uverbs_destroy_cq cmd; |
1331 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 1332 | struct ib_uobject *uobj; |
63aaf647 | 1333 | struct ib_cq *cq; |
9ead190b | 1334 | struct ib_ucq_object *obj; |
6b73597e | 1335 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 1336 | int ret = -EINVAL; |
bc38a6ab RD |
1337 | |
1338 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1339 | return -EFAULT; | |
1340 | ||
9ead190b RD |
1341 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
1342 | if (!uobj) | |
1343 | return -EINVAL; | |
1344 | cq = uobj->object; | |
1345 | ev_file = cq->cq_context; | |
1346 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 1347 | |
9ead190b RD |
1348 | ret = ib_destroy_cq(cq); |
1349 | if (!ret) | |
1350 | uobj->live = 0; | |
bc38a6ab | 1351 | |
9ead190b | 1352 | put_uobj_write(uobj); |
bc38a6ab | 1353 | |
bc38a6ab | 1354 | if (ret) |
9ead190b | 1355 | return ret; |
bc38a6ab | 1356 | |
9ead190b | 1357 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 1358 | |
95ed644f | 1359 | mutex_lock(&file->mutex); |
9ead190b | 1360 | list_del(&uobj->list); |
95ed644f | 1361 | mutex_unlock(&file->mutex); |
bc38a6ab | 1362 | |
9ead190b | 1363 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1364 | |
9ead190b RD |
1365 | memset(&resp, 0, sizeof resp); |
1366 | resp.comp_events_reported = obj->comp_events_reported; | |
1367 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1368 | |
9ead190b | 1369 | put_uobj(uobj); |
bc38a6ab | 1370 | |
63aaf647 RD |
1371 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1372 | &resp, sizeof resp)) | |
9ead190b | 1373 | return -EFAULT; |
bc38a6ab | 1374 | |
9ead190b | 1375 | return in_len; |
bc38a6ab RD |
1376 | } |
1377 | ||
1378 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
1379 | const char __user *buf, int in_len, | |
1380 | int out_len) | |
1381 | { | |
1382 | struct ib_uverbs_create_qp cmd; | |
1383 | struct ib_uverbs_create_qp_resp resp; | |
1384 | struct ib_udata udata; | |
9ead190b | 1385 | struct ib_uqp_object *obj; |
b93f3c18 SH |
1386 | struct ib_device *device; |
1387 | struct ib_pd *pd = NULL; | |
1388 | struct ib_xrcd *xrcd = NULL; | |
1389 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1390 | struct ib_cq *scq = NULL, *rcq = NULL; | |
9977f4f6 | 1391 | struct ib_srq *srq = NULL; |
bc38a6ab RD |
1392 | struct ib_qp *qp; |
1393 | struct ib_qp_init_attr attr; | |
1394 | int ret; | |
1395 | ||
1396 | if (out_len < sizeof resp) | |
1397 | return -ENOSPC; | |
1398 | ||
1399 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1400 | return -EFAULT; | |
1401 | ||
c938a616 OG |
1402 | if (cmd.qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) |
1403 | return -EPERM; | |
1404 | ||
bc38a6ab RD |
1405 | INIT_UDATA(&udata, buf + sizeof cmd, |
1406 | (unsigned long) cmd.response + sizeof resp, | |
1407 | in_len - sizeof cmd, out_len - sizeof resp); | |
1408 | ||
9ead190b RD |
1409 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1410 | if (!obj) | |
bc38a6ab RD |
1411 | return -ENOMEM; |
1412 | ||
3bea57a5 | 1413 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
9ead190b | 1414 | down_write(&obj->uevent.uobject.mutex); |
bc38a6ab | 1415 | |
b93f3c18 SH |
1416 | if (cmd.qp_type == IB_QPT_XRC_TGT) { |
1417 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
1418 | if (!xrcd) { | |
1419 | ret = -EINVAL; | |
1420 | goto err_put; | |
1421 | } | |
1422 | device = xrcd->device; | |
9977f4f6 | 1423 | } else { |
b93f3c18 SH |
1424 | if (cmd.qp_type == IB_QPT_XRC_INI) { |
1425 | cmd.max_recv_wr = cmd.max_recv_sge = 0; | |
1426 | } else { | |
1427 | if (cmd.is_srq) { | |
1428 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); | |
1429 | if (!srq || srq->srq_type != IB_SRQT_BASIC) { | |
1430 | ret = -EINVAL; | |
1431 | goto err_put; | |
1432 | } | |
1433 | } | |
5909ce54 RD |
1434 | |
1435 | if (cmd.recv_cq_handle != cmd.send_cq_handle) { | |
1436 | rcq = idr_read_cq(cmd.recv_cq_handle, file->ucontext, 0); | |
1437 | if (!rcq) { | |
1438 | ret = -EINVAL; | |
1439 | goto err_put; | |
1440 | } | |
9977f4f6 SH |
1441 | } |
1442 | } | |
5909ce54 RD |
1443 | |
1444 | scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, !!rcq); | |
1445 | rcq = rcq ?: scq; | |
1446 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1447 | if (!pd || !scq) { | |
1448 | ret = -EINVAL; | |
1449 | goto err_put; | |
1450 | } | |
1451 | ||
b93f3c18 | 1452 | device = pd->device; |
9977f4f6 SH |
1453 | } |
1454 | ||
bc38a6ab RD |
1455 | attr.event_handler = ib_uverbs_qp_event_handler; |
1456 | attr.qp_context = file; | |
1457 | attr.send_cq = scq; | |
1458 | attr.recv_cq = rcq; | |
f520ba5a | 1459 | attr.srq = srq; |
b93f3c18 | 1460 | attr.xrcd = xrcd; |
bc38a6ab RD |
1461 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
1462 | attr.qp_type = cmd.qp_type; | |
b846f25a | 1463 | attr.create_flags = 0; |
bc38a6ab RD |
1464 | |
1465 | attr.cap.max_send_wr = cmd.max_send_wr; | |
1466 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
1467 | attr.cap.max_send_sge = cmd.max_send_sge; | |
1468 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
1469 | attr.cap.max_inline_data = cmd.max_inline_data; | |
1470 | ||
9ead190b RD |
1471 | obj->uevent.events_reported = 0; |
1472 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1473 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab | 1474 | |
b93f3c18 SH |
1475 | if (cmd.qp_type == IB_QPT_XRC_TGT) |
1476 | qp = ib_create_qp(pd, &attr); | |
1477 | else | |
1478 | qp = device->create_qp(pd, &attr, &udata); | |
1479 | ||
bc38a6ab RD |
1480 | if (IS_ERR(qp)) { |
1481 | ret = PTR_ERR(qp); | |
9ead190b | 1482 | goto err_put; |
bc38a6ab RD |
1483 | } |
1484 | ||
b93f3c18 | 1485 | if (cmd.qp_type != IB_QPT_XRC_TGT) { |
0e0ec7e0 | 1486 | qp->real_qp = qp; |
b93f3c18 SH |
1487 | qp->device = device; |
1488 | qp->pd = pd; | |
1489 | qp->send_cq = attr.send_cq; | |
1490 | qp->recv_cq = attr.recv_cq; | |
1491 | qp->srq = attr.srq; | |
1492 | qp->event_handler = attr.event_handler; | |
1493 | qp->qp_context = attr.qp_context; | |
1494 | qp->qp_type = attr.qp_type; | |
e47e321a | 1495 | atomic_set(&qp->usecnt, 0); |
b93f3c18 SH |
1496 | atomic_inc(&pd->usecnt); |
1497 | atomic_inc(&attr.send_cq->usecnt); | |
1498 | if (attr.recv_cq) | |
1499 | atomic_inc(&attr.recv_cq->usecnt); | |
1500 | if (attr.srq) | |
1501 | atomic_inc(&attr.srq->usecnt); | |
1502 | } | |
1503 | qp->uobject = &obj->uevent.uobject; | |
bc38a6ab | 1504 | |
9ead190b RD |
1505 | obj->uevent.uobject.object = qp; |
1506 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1507 | if (ret) |
1508 | goto err_destroy; | |
1509 | ||
9ead190b RD |
1510 | memset(&resp, 0, sizeof resp); |
1511 | resp.qpn = qp->qp_num; | |
1512 | resp.qp_handle = obj->uevent.uobject.id; | |
77369ed3 JM |
1513 | resp.max_recv_sge = attr.cap.max_recv_sge; |
1514 | resp.max_send_sge = attr.cap.max_send_sge; | |
1515 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
1516 | resp.max_send_wr = attr.cap.max_send_wr; | |
1517 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1518 | |
bc38a6ab RD |
1519 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1520 | &resp, sizeof resp)) { | |
1521 | ret = -EFAULT; | |
9ead190b | 1522 | goto err_copy; |
bc38a6ab RD |
1523 | } |
1524 | ||
b93f3c18 SH |
1525 | if (xrcd) |
1526 | put_xrcd_read(xrcd_uobj); | |
1527 | if (pd) | |
1528 | put_pd_read(pd); | |
1529 | if (scq) | |
1530 | put_cq_read(scq); | |
9977f4f6 | 1531 | if (rcq && rcq != scq) |
43db2bc0 | 1532 | put_cq_read(rcq); |
9ead190b RD |
1533 | if (srq) |
1534 | put_srq_read(srq); | |
1535 | ||
95ed644f | 1536 | mutex_lock(&file->mutex); |
9ead190b | 1537 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1538 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1539 | |
9ead190b RD |
1540 | obj->uevent.uobject.live = 1; |
1541 | ||
1542 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab RD |
1543 | |
1544 | return in_len; | |
1545 | ||
9ead190b RD |
1546 | err_copy: |
1547 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1548 | |
1549 | err_destroy: | |
1550 | ib_destroy_qp(qp); | |
1551 | ||
9ead190b | 1552 | err_put: |
b93f3c18 SH |
1553 | if (xrcd) |
1554 | put_xrcd_read(xrcd_uobj); | |
9ead190b RD |
1555 | if (pd) |
1556 | put_pd_read(pd); | |
1557 | if (scq) | |
1558 | put_cq_read(scq); | |
43db2bc0 | 1559 | if (rcq && rcq != scq) |
9ead190b RD |
1560 | put_cq_read(rcq); |
1561 | if (srq) | |
1562 | put_srq_read(srq); | |
1563 | ||
1564 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
1565 | return ret; |
1566 | } | |
1567 | ||
42849b26 SH |
1568 | ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, |
1569 | const char __user *buf, int in_len, int out_len) | |
1570 | { | |
1571 | struct ib_uverbs_open_qp cmd; | |
1572 | struct ib_uverbs_create_qp_resp resp; | |
1573 | struct ib_udata udata; | |
1574 | struct ib_uqp_object *obj; | |
1575 | struct ib_xrcd *xrcd; | |
1576 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1577 | struct ib_qp *qp; | |
1578 | struct ib_qp_open_attr attr; | |
1579 | int ret; | |
1580 | ||
1581 | if (out_len < sizeof resp) | |
1582 | return -ENOSPC; | |
1583 | ||
1584 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1585 | return -EFAULT; | |
1586 | ||
1587 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1588 | (unsigned long) cmd.response + sizeof resp, | |
1589 | in_len - sizeof cmd, out_len - sizeof resp); | |
1590 | ||
1591 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
1592 | if (!obj) | |
1593 | return -ENOMEM; | |
1594 | ||
3bea57a5 | 1595 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
42849b26 SH |
1596 | down_write(&obj->uevent.uobject.mutex); |
1597 | ||
1598 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
1599 | if (!xrcd) { | |
1600 | ret = -EINVAL; | |
1601 | goto err_put; | |
1602 | } | |
1603 | ||
1604 | attr.event_handler = ib_uverbs_qp_event_handler; | |
1605 | attr.qp_context = file; | |
1606 | attr.qp_num = cmd.qpn; | |
1607 | attr.qp_type = cmd.qp_type; | |
1608 | ||
1609 | obj->uevent.events_reported = 0; | |
1610 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1611 | INIT_LIST_HEAD(&obj->mcast_list); | |
1612 | ||
1613 | qp = ib_open_qp(xrcd, &attr); | |
1614 | if (IS_ERR(qp)) { | |
1615 | ret = PTR_ERR(qp); | |
1616 | goto err_put; | |
1617 | } | |
1618 | ||
1619 | qp->uobject = &obj->uevent.uobject; | |
1620 | ||
1621 | obj->uevent.uobject.object = qp; | |
1622 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
1623 | if (ret) | |
1624 | goto err_destroy; | |
1625 | ||
1626 | memset(&resp, 0, sizeof resp); | |
1627 | resp.qpn = qp->qp_num; | |
1628 | resp.qp_handle = obj->uevent.uobject.id; | |
1629 | ||
1630 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1631 | &resp, sizeof resp)) { | |
1632 | ret = -EFAULT; | |
1633 | goto err_remove; | |
1634 | } | |
1635 | ||
1636 | put_xrcd_read(xrcd_uobj); | |
1637 | ||
1638 | mutex_lock(&file->mutex); | |
1639 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); | |
1640 | mutex_unlock(&file->mutex); | |
1641 | ||
1642 | obj->uevent.uobject.live = 1; | |
1643 | ||
1644 | up_write(&obj->uevent.uobject.mutex); | |
1645 | ||
1646 | return in_len; | |
1647 | ||
1648 | err_remove: | |
1649 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
1650 | ||
1651 | err_destroy: | |
1652 | ib_destroy_qp(qp); | |
1653 | ||
1654 | err_put: | |
1655 | put_xrcd_read(xrcd_uobj); | |
1656 | put_uobj_write(&obj->uevent.uobject); | |
1657 | return ret; | |
1658 | } | |
1659 | ||
7ccc9a24 DB |
1660 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
1661 | const char __user *buf, int in_len, | |
1662 | int out_len) | |
1663 | { | |
1664 | struct ib_uverbs_query_qp cmd; | |
1665 | struct ib_uverbs_query_qp_resp resp; | |
1666 | struct ib_qp *qp; | |
1667 | struct ib_qp_attr *attr; | |
1668 | struct ib_qp_init_attr *init_attr; | |
1669 | int ret; | |
1670 | ||
1671 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1672 | return -EFAULT; | |
1673 | ||
1674 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1675 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
1676 | if (!attr || !init_attr) { | |
1677 | ret = -ENOMEM; | |
1678 | goto out; | |
1679 | } | |
1680 | ||
9ead190b RD |
1681 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1682 | if (!qp) { | |
7ccc9a24 | 1683 | ret = -EINVAL; |
9ead190b RD |
1684 | goto out; |
1685 | } | |
1686 | ||
1687 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 1688 | |
9ead190b | 1689 | put_qp_read(qp); |
7ccc9a24 DB |
1690 | |
1691 | if (ret) | |
1692 | goto out; | |
1693 | ||
1694 | memset(&resp, 0, sizeof resp); | |
1695 | ||
1696 | resp.qp_state = attr->qp_state; | |
1697 | resp.cur_qp_state = attr->cur_qp_state; | |
1698 | resp.path_mtu = attr->path_mtu; | |
1699 | resp.path_mig_state = attr->path_mig_state; | |
1700 | resp.qkey = attr->qkey; | |
1701 | resp.rq_psn = attr->rq_psn; | |
1702 | resp.sq_psn = attr->sq_psn; | |
1703 | resp.dest_qp_num = attr->dest_qp_num; | |
1704 | resp.qp_access_flags = attr->qp_access_flags; | |
1705 | resp.pkey_index = attr->pkey_index; | |
1706 | resp.alt_pkey_index = attr->alt_pkey_index; | |
0b26c88f | 1707 | resp.sq_draining = attr->sq_draining; |
7ccc9a24 DB |
1708 | resp.max_rd_atomic = attr->max_rd_atomic; |
1709 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1710 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1711 | resp.port_num = attr->port_num; | |
1712 | resp.timeout = attr->timeout; | |
1713 | resp.retry_cnt = attr->retry_cnt; | |
1714 | resp.rnr_retry = attr->rnr_retry; | |
1715 | resp.alt_port_num = attr->alt_port_num; | |
1716 | resp.alt_timeout = attr->alt_timeout; | |
1717 | ||
1718 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1719 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1720 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1721 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1722 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1723 | resp.dest.dlid = attr->ah_attr.dlid; | |
1724 | resp.dest.sl = attr->ah_attr.sl; | |
1725 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1726 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1727 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1728 | resp.dest.port_num = attr->ah_attr.port_num; | |
1729 | ||
1730 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1731 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1732 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1733 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1734 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1735 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1736 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1737 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1738 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1739 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1740 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1741 | ||
1742 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1743 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1744 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1745 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1746 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1747 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1748 | |
1749 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1750 | &resp, sizeof resp)) | |
1751 | ret = -EFAULT; | |
1752 | ||
1753 | out: | |
1754 | kfree(attr); | |
1755 | kfree(init_attr); | |
1756 | ||
1757 | return ret ? ret : in_len; | |
1758 | } | |
1759 | ||
9977f4f6 SH |
1760 | /* Remove ignored fields set in the attribute mask */ |
1761 | static int modify_qp_mask(enum ib_qp_type qp_type, int mask) | |
1762 | { | |
1763 | switch (qp_type) { | |
1764 | case IB_QPT_XRC_INI: | |
1765 | return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); | |
b93f3c18 SH |
1766 | case IB_QPT_XRC_TGT: |
1767 | return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | | |
1768 | IB_QP_RNR_RETRY); | |
9977f4f6 SH |
1769 | default: |
1770 | return mask; | |
1771 | } | |
1772 | } | |
1773 | ||
bc38a6ab RD |
1774 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1775 | const char __user *buf, int in_len, | |
1776 | int out_len) | |
1777 | { | |
1778 | struct ib_uverbs_modify_qp cmd; | |
9bc57e2d | 1779 | struct ib_udata udata; |
bc38a6ab RD |
1780 | struct ib_qp *qp; |
1781 | struct ib_qp_attr *attr; | |
1782 | int ret; | |
1783 | ||
1784 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1785 | return -EFAULT; | |
1786 | ||
9bc57e2d RC |
1787 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
1788 | out_len); | |
1789 | ||
bc38a6ab RD |
1790 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
1791 | if (!attr) | |
1792 | return -ENOMEM; | |
1793 | ||
9ead190b RD |
1794 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1795 | if (!qp) { | |
bc38a6ab RD |
1796 | ret = -EINVAL; |
1797 | goto out; | |
1798 | } | |
1799 | ||
1800 | attr->qp_state = cmd.qp_state; | |
1801 | attr->cur_qp_state = cmd.cur_qp_state; | |
1802 | attr->path_mtu = cmd.path_mtu; | |
1803 | attr->path_mig_state = cmd.path_mig_state; | |
1804 | attr->qkey = cmd.qkey; | |
1805 | attr->rq_psn = cmd.rq_psn; | |
1806 | attr->sq_psn = cmd.sq_psn; | |
1807 | attr->dest_qp_num = cmd.dest_qp_num; | |
1808 | attr->qp_access_flags = cmd.qp_access_flags; | |
1809 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1810 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1811 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1812 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1813 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1814 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1815 | attr->port_num = cmd.port_num; | |
1816 | attr->timeout = cmd.timeout; | |
1817 | attr->retry_cnt = cmd.retry_cnt; | |
1818 | attr->rnr_retry = cmd.rnr_retry; | |
1819 | attr->alt_port_num = cmd.alt_port_num; | |
1820 | attr->alt_timeout = cmd.alt_timeout; | |
1821 | ||
1822 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1823 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1824 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1825 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1826 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1827 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1828 | attr->ah_attr.sl = cmd.dest.sl; | |
1829 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1830 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1831 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1832 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1833 | ||
1834 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1835 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1836 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1837 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1838 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1839 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1840 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1841 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1842 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1843 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1844 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1845 | ||
0e0ec7e0 SH |
1846 | if (qp->real_qp == qp) { |
1847 | ret = qp->device->modify_qp(qp, attr, | |
1848 | modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata); | |
1849 | } else { | |
1850 | ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask)); | |
1851 | } | |
9ead190b RD |
1852 | |
1853 | put_qp_read(qp); | |
1854 | ||
bc38a6ab RD |
1855 | if (ret) |
1856 | goto out; | |
1857 | ||
1858 | ret = in_len; | |
1859 | ||
1860 | out: | |
bc38a6ab RD |
1861 | kfree(attr); |
1862 | ||
1863 | return ret; | |
1864 | } | |
1865 | ||
1866 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1867 | const char __user *buf, int in_len, | |
1868 | int out_len) | |
1869 | { | |
63aaf647 RD |
1870 | struct ib_uverbs_destroy_qp cmd; |
1871 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 1872 | struct ib_uobject *uobj; |
63aaf647 | 1873 | struct ib_qp *qp; |
9ead190b | 1874 | struct ib_uqp_object *obj; |
63aaf647 | 1875 | int ret = -EINVAL; |
bc38a6ab RD |
1876 | |
1877 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1878 | return -EFAULT; | |
1879 | ||
63aaf647 RD |
1880 | memset(&resp, 0, sizeof resp); |
1881 | ||
9ead190b RD |
1882 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
1883 | if (!uobj) | |
1884 | return -EINVAL; | |
1885 | qp = uobj->object; | |
1886 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 1887 | |
9ead190b RD |
1888 | if (!list_empty(&obj->mcast_list)) { |
1889 | put_uobj_write(uobj); | |
1890 | return -EBUSY; | |
f4e40156 | 1891 | } |
bc38a6ab RD |
1892 | |
1893 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
1894 | if (!ret) |
1895 | uobj->live = 0; | |
1896 | ||
1897 | put_uobj_write(uobj); | |
1898 | ||
bc38a6ab | 1899 | if (ret) |
9ead190b | 1900 | return ret; |
bc38a6ab | 1901 | |
9ead190b | 1902 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 1903 | |
95ed644f | 1904 | mutex_lock(&file->mutex); |
9ead190b | 1905 | list_del(&uobj->list); |
95ed644f | 1906 | mutex_unlock(&file->mutex); |
bc38a6ab | 1907 | |
9ead190b | 1908 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 1909 | |
9ead190b | 1910 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 1911 | |
9ead190b | 1912 | put_uobj(uobj); |
bc38a6ab | 1913 | |
63aaf647 RD |
1914 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1915 | &resp, sizeof resp)) | |
9ead190b | 1916 | return -EFAULT; |
bc38a6ab | 1917 | |
9ead190b | 1918 | return in_len; |
bc38a6ab RD |
1919 | } |
1920 | ||
67cdb40c | 1921 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
1922 | const char __user *buf, int in_len, |
1923 | int out_len) | |
67cdb40c RD |
1924 | { |
1925 | struct ib_uverbs_post_send cmd; | |
1926 | struct ib_uverbs_post_send_resp resp; | |
1927 | struct ib_uverbs_send_wr *user_wr; | |
1928 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
1929 | struct ib_qp *qp; | |
1930 | int i, sg_ind; | |
9ead190b | 1931 | int is_ud; |
67cdb40c RD |
1932 | ssize_t ret = -EINVAL; |
1933 | ||
1934 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1935 | return -EFAULT; | |
1936 | ||
1937 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
1938 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
1939 | return -EINVAL; | |
1940 | ||
1941 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
1942 | return -EINVAL; | |
1943 | ||
1944 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
1945 | if (!user_wr) | |
1946 | return -ENOMEM; | |
1947 | ||
9ead190b RD |
1948 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1949 | if (!qp) | |
67cdb40c RD |
1950 | goto out; |
1951 | ||
9ead190b | 1952 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
1953 | sg_ind = 0; |
1954 | last = NULL; | |
1955 | for (i = 0; i < cmd.wr_count; ++i) { | |
1956 | if (copy_from_user(user_wr, | |
1957 | buf + sizeof cmd + i * cmd.wqe_size, | |
1958 | cmd.wqe_size)) { | |
1959 | ret = -EFAULT; | |
9ead190b | 1960 | goto out_put; |
67cdb40c RD |
1961 | } |
1962 | ||
1963 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
1964 | ret = -EINVAL; | |
9ead190b | 1965 | goto out_put; |
67cdb40c RD |
1966 | } |
1967 | ||
1968 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
1969 | user_wr->num_sge * sizeof (struct ib_sge), | |
1970 | GFP_KERNEL); | |
1971 | if (!next) { | |
1972 | ret = -ENOMEM; | |
9ead190b | 1973 | goto out_put; |
67cdb40c RD |
1974 | } |
1975 | ||
1976 | if (!last) | |
1977 | wr = next; | |
1978 | else | |
1979 | last->next = next; | |
1980 | last = next; | |
1981 | ||
1982 | next->next = NULL; | |
1983 | next->wr_id = user_wr->wr_id; | |
1984 | next->num_sge = user_wr->num_sge; | |
1985 | next->opcode = user_wr->opcode; | |
1986 | next->send_flags = user_wr->send_flags; | |
67cdb40c | 1987 | |
9ead190b RD |
1988 | if (is_ud) { |
1989 | next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, | |
1990 | file->ucontext); | |
67cdb40c RD |
1991 | if (!next->wr.ud.ah) { |
1992 | ret = -EINVAL; | |
9ead190b | 1993 | goto out_put; |
67cdb40c RD |
1994 | } |
1995 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
1996 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
1997 | } else { | |
1998 | switch (next->opcode) { | |
67cdb40c | 1999 | case IB_WR_RDMA_WRITE_WITH_IMM: |
0f39cf3d RD |
2000 | next->ex.imm_data = |
2001 | (__be32 __force) user_wr->ex.imm_data; | |
2002 | case IB_WR_RDMA_WRITE: | |
67cdb40c RD |
2003 | case IB_WR_RDMA_READ: |
2004 | next->wr.rdma.remote_addr = | |
2005 | user_wr->wr.rdma.remote_addr; | |
2006 | next->wr.rdma.rkey = | |
2007 | user_wr->wr.rdma.rkey; | |
2008 | break; | |
0f39cf3d RD |
2009 | case IB_WR_SEND_WITH_IMM: |
2010 | next->ex.imm_data = | |
2011 | (__be32 __force) user_wr->ex.imm_data; | |
2012 | break; | |
2013 | case IB_WR_SEND_WITH_INV: | |
2014 | next->ex.invalidate_rkey = | |
2015 | user_wr->ex.invalidate_rkey; | |
2016 | break; | |
67cdb40c RD |
2017 | case IB_WR_ATOMIC_CMP_AND_SWP: |
2018 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
2019 | next->wr.atomic.remote_addr = | |
2020 | user_wr->wr.atomic.remote_addr; | |
2021 | next->wr.atomic.compare_add = | |
2022 | user_wr->wr.atomic.compare_add; | |
2023 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
2024 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
2025 | break; | |
2026 | default: | |
2027 | break; | |
2028 | } | |
2029 | } | |
2030 | ||
2031 | if (next->num_sge) { | |
2032 | next->sg_list = (void *) next + | |
2033 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2034 | if (copy_from_user(next->sg_list, | |
2035 | buf + sizeof cmd + | |
2036 | cmd.wr_count * cmd.wqe_size + | |
2037 | sg_ind * sizeof (struct ib_sge), | |
2038 | next->num_sge * sizeof (struct ib_sge))) { | |
2039 | ret = -EFAULT; | |
9ead190b | 2040 | goto out_put; |
67cdb40c RD |
2041 | } |
2042 | sg_ind += next->num_sge; | |
2043 | } else | |
2044 | next->sg_list = NULL; | |
2045 | } | |
2046 | ||
2047 | resp.bad_wr = 0; | |
0e0ec7e0 | 2048 | ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); |
67cdb40c RD |
2049 | if (ret) |
2050 | for (next = wr; next; next = next->next) { | |
2051 | ++resp.bad_wr; | |
2052 | if (next == bad_wr) | |
2053 | break; | |
2054 | } | |
2055 | ||
2056 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2057 | &resp, sizeof resp)) | |
2058 | ret = -EFAULT; | |
2059 | ||
9ead190b RD |
2060 | out_put: |
2061 | put_qp_read(qp); | |
67cdb40c RD |
2062 | |
2063 | while (wr) { | |
9ead190b RD |
2064 | if (is_ud && wr->wr.ud.ah) |
2065 | put_ah_read(wr->wr.ud.ah); | |
67cdb40c RD |
2066 | next = wr->next; |
2067 | kfree(wr); | |
2068 | wr = next; | |
2069 | } | |
2070 | ||
18320828 | 2071 | out: |
67cdb40c RD |
2072 | kfree(user_wr); |
2073 | ||
2074 | return ret ? ret : in_len; | |
2075 | } | |
2076 | ||
2077 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
2078 | int in_len, | |
2079 | u32 wr_count, | |
2080 | u32 sge_count, | |
2081 | u32 wqe_size) | |
2082 | { | |
2083 | struct ib_uverbs_recv_wr *user_wr; | |
2084 | struct ib_recv_wr *wr = NULL, *last, *next; | |
2085 | int sg_ind; | |
2086 | int i; | |
2087 | int ret; | |
2088 | ||
2089 | if (in_len < wqe_size * wr_count + | |
2090 | sge_count * sizeof (struct ib_uverbs_sge)) | |
2091 | return ERR_PTR(-EINVAL); | |
2092 | ||
2093 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
2094 | return ERR_PTR(-EINVAL); | |
2095 | ||
2096 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
2097 | if (!user_wr) | |
2098 | return ERR_PTR(-ENOMEM); | |
2099 | ||
2100 | sg_ind = 0; | |
2101 | last = NULL; | |
2102 | for (i = 0; i < wr_count; ++i) { | |
2103 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
2104 | wqe_size)) { | |
2105 | ret = -EFAULT; | |
2106 | goto err; | |
2107 | } | |
2108 | ||
2109 | if (user_wr->num_sge + sg_ind > sge_count) { | |
2110 | ret = -EINVAL; | |
2111 | goto err; | |
2112 | } | |
2113 | ||
2114 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
2115 | user_wr->num_sge * sizeof (struct ib_sge), | |
2116 | GFP_KERNEL); | |
2117 | if (!next) { | |
2118 | ret = -ENOMEM; | |
2119 | goto err; | |
2120 | } | |
2121 | ||
2122 | if (!last) | |
2123 | wr = next; | |
2124 | else | |
2125 | last->next = next; | |
2126 | last = next; | |
2127 | ||
2128 | next->next = NULL; | |
2129 | next->wr_id = user_wr->wr_id; | |
2130 | next->num_sge = user_wr->num_sge; | |
2131 | ||
2132 | if (next->num_sge) { | |
2133 | next->sg_list = (void *) next + | |
2134 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2135 | if (copy_from_user(next->sg_list, | |
2136 | buf + wr_count * wqe_size + | |
2137 | sg_ind * sizeof (struct ib_sge), | |
2138 | next->num_sge * sizeof (struct ib_sge))) { | |
2139 | ret = -EFAULT; | |
2140 | goto err; | |
2141 | } | |
2142 | sg_ind += next->num_sge; | |
2143 | } else | |
2144 | next->sg_list = NULL; | |
2145 | } | |
2146 | ||
2147 | kfree(user_wr); | |
2148 | return wr; | |
2149 | ||
2150 | err: | |
2151 | kfree(user_wr); | |
2152 | ||
2153 | while (wr) { | |
2154 | next = wr->next; | |
2155 | kfree(wr); | |
2156 | wr = next; | |
2157 | } | |
2158 | ||
2159 | return ERR_PTR(ret); | |
2160 | } | |
2161 | ||
2162 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
2163 | const char __user *buf, int in_len, |
2164 | int out_len) | |
67cdb40c RD |
2165 | { |
2166 | struct ib_uverbs_post_recv cmd; | |
2167 | struct ib_uverbs_post_recv_resp resp; | |
2168 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2169 | struct ib_qp *qp; | |
2170 | ssize_t ret = -EINVAL; | |
2171 | ||
2172 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2173 | return -EFAULT; | |
2174 | ||
2175 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2176 | in_len - sizeof cmd, cmd.wr_count, | |
2177 | cmd.sge_count, cmd.wqe_size); | |
2178 | if (IS_ERR(wr)) | |
2179 | return PTR_ERR(wr); | |
2180 | ||
9ead190b RD |
2181 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2182 | if (!qp) | |
67cdb40c RD |
2183 | goto out; |
2184 | ||
2185 | resp.bad_wr = 0; | |
0e0ec7e0 | 2186 | ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); |
9ead190b RD |
2187 | |
2188 | put_qp_read(qp); | |
2189 | ||
67cdb40c RD |
2190 | if (ret) |
2191 | for (next = wr; next; next = next->next) { | |
2192 | ++resp.bad_wr; | |
2193 | if (next == bad_wr) | |
2194 | break; | |
2195 | } | |
2196 | ||
67cdb40c RD |
2197 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2198 | &resp, sizeof resp)) | |
2199 | ret = -EFAULT; | |
2200 | ||
2201 | out: | |
67cdb40c RD |
2202 | while (wr) { |
2203 | next = wr->next; | |
2204 | kfree(wr); | |
2205 | wr = next; | |
2206 | } | |
2207 | ||
2208 | return ret ? ret : in_len; | |
2209 | } | |
2210 | ||
2211 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
2212 | const char __user *buf, int in_len, |
2213 | int out_len) | |
67cdb40c RD |
2214 | { |
2215 | struct ib_uverbs_post_srq_recv cmd; | |
2216 | struct ib_uverbs_post_srq_recv_resp resp; | |
2217 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2218 | struct ib_srq *srq; | |
2219 | ssize_t ret = -EINVAL; | |
2220 | ||
2221 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2222 | return -EFAULT; | |
2223 | ||
2224 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2225 | in_len - sizeof cmd, cmd.wr_count, | |
2226 | cmd.sge_count, cmd.wqe_size); | |
2227 | if (IS_ERR(wr)) | |
2228 | return PTR_ERR(wr); | |
2229 | ||
9ead190b RD |
2230 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2231 | if (!srq) | |
67cdb40c RD |
2232 | goto out; |
2233 | ||
2234 | resp.bad_wr = 0; | |
2235 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
2236 | |
2237 | put_srq_read(srq); | |
2238 | ||
67cdb40c RD |
2239 | if (ret) |
2240 | for (next = wr; next; next = next->next) { | |
2241 | ++resp.bad_wr; | |
2242 | if (next == bad_wr) | |
2243 | break; | |
2244 | } | |
2245 | ||
67cdb40c RD |
2246 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2247 | &resp, sizeof resp)) | |
2248 | ret = -EFAULT; | |
2249 | ||
2250 | out: | |
67cdb40c RD |
2251 | while (wr) { |
2252 | next = wr->next; | |
2253 | kfree(wr); | |
2254 | wr = next; | |
2255 | } | |
2256 | ||
2257 | return ret ? ret : in_len; | |
2258 | } | |
2259 | ||
2260 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
2261 | const char __user *buf, int in_len, | |
2262 | int out_len) | |
2263 | { | |
2264 | struct ib_uverbs_create_ah cmd; | |
2265 | struct ib_uverbs_create_ah_resp resp; | |
2266 | struct ib_uobject *uobj; | |
2267 | struct ib_pd *pd; | |
2268 | struct ib_ah *ah; | |
2269 | struct ib_ah_attr attr; | |
2270 | int ret; | |
2271 | ||
2272 | if (out_len < sizeof resp) | |
2273 | return -ENOSPC; | |
2274 | ||
2275 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2276 | return -EFAULT; | |
2277 | ||
2278 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
2279 | if (!uobj) | |
2280 | return -ENOMEM; | |
2281 | ||
3bea57a5 | 2282 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_class); |
9ead190b | 2283 | down_write(&uobj->mutex); |
67cdb40c | 2284 | |
9ead190b RD |
2285 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
2286 | if (!pd) { | |
67cdb40c | 2287 | ret = -EINVAL; |
9ead190b | 2288 | goto err; |
67cdb40c RD |
2289 | } |
2290 | ||
67cdb40c RD |
2291 | attr.dlid = cmd.attr.dlid; |
2292 | attr.sl = cmd.attr.sl; | |
2293 | attr.src_path_bits = cmd.attr.src_path_bits; | |
2294 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 2295 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
2296 | attr.port_num = cmd.attr.port_num; |
2297 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
2298 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
2299 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
2300 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
2301 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
2302 | ||
2303 | ah = ib_create_ah(pd, &attr); | |
2304 | if (IS_ERR(ah)) { | |
2305 | ret = PTR_ERR(ah); | |
ec924b47 | 2306 | goto err_put; |
67cdb40c RD |
2307 | } |
2308 | ||
9ead190b RD |
2309 | ah->uobject = uobj; |
2310 | uobj->object = ah; | |
67cdb40c | 2311 | |
9ead190b | 2312 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
2313 | if (ret) |
2314 | goto err_destroy; | |
2315 | ||
2316 | resp.ah_handle = uobj->id; | |
2317 | ||
2318 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2319 | &resp, sizeof resp)) { | |
2320 | ret = -EFAULT; | |
9ead190b | 2321 | goto err_copy; |
67cdb40c RD |
2322 | } |
2323 | ||
9ead190b RD |
2324 | put_pd_read(pd); |
2325 | ||
95ed644f | 2326 | mutex_lock(&file->mutex); |
67cdb40c | 2327 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 2328 | mutex_unlock(&file->mutex); |
67cdb40c | 2329 | |
9ead190b RD |
2330 | uobj->live = 1; |
2331 | ||
2332 | up_write(&uobj->mutex); | |
67cdb40c RD |
2333 | |
2334 | return in_len; | |
2335 | ||
9ead190b RD |
2336 | err_copy: |
2337 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
2338 | |
2339 | err_destroy: | |
2340 | ib_destroy_ah(ah); | |
2341 | ||
ec924b47 MT |
2342 | err_put: |
2343 | put_pd_read(pd); | |
2344 | ||
9ead190b RD |
2345 | err: |
2346 | put_uobj_write(uobj); | |
67cdb40c RD |
2347 | return ret; |
2348 | } | |
2349 | ||
2350 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
2351 | const char __user *buf, int in_len, int out_len) | |
2352 | { | |
2353 | struct ib_uverbs_destroy_ah cmd; | |
2354 | struct ib_ah *ah; | |
2355 | struct ib_uobject *uobj; | |
9ead190b | 2356 | int ret; |
67cdb40c RD |
2357 | |
2358 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2359 | return -EFAULT; | |
2360 | ||
9ead190b RD |
2361 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
2362 | if (!uobj) | |
2363 | return -EINVAL; | |
2364 | ah = uobj->object; | |
67cdb40c | 2365 | |
9ead190b RD |
2366 | ret = ib_destroy_ah(ah); |
2367 | if (!ret) | |
2368 | uobj->live = 0; | |
67cdb40c | 2369 | |
9ead190b | 2370 | put_uobj_write(uobj); |
67cdb40c | 2371 | |
67cdb40c | 2372 | if (ret) |
9ead190b | 2373 | return ret; |
67cdb40c | 2374 | |
9ead190b | 2375 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 2376 | |
95ed644f | 2377 | mutex_lock(&file->mutex); |
67cdb40c | 2378 | list_del(&uobj->list); |
95ed644f | 2379 | mutex_unlock(&file->mutex); |
67cdb40c | 2380 | |
9ead190b | 2381 | put_uobj(uobj); |
67cdb40c | 2382 | |
9ead190b | 2383 | return in_len; |
67cdb40c RD |
2384 | } |
2385 | ||
bc38a6ab RD |
2386 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
2387 | const char __user *buf, int in_len, | |
2388 | int out_len) | |
2389 | { | |
2390 | struct ib_uverbs_attach_mcast cmd; | |
2391 | struct ib_qp *qp; | |
9ead190b | 2392 | struct ib_uqp_object *obj; |
f4e40156 | 2393 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 2394 | int ret; |
bc38a6ab RD |
2395 | |
2396 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2397 | return -EFAULT; | |
2398 | ||
e214a0fe | 2399 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2400 | if (!qp) |
2401 | return -EINVAL; | |
f4e40156 | 2402 | |
9ead190b | 2403 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 2404 | |
9ead190b | 2405 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
2406 | if (cmd.mlid == mcast->lid && |
2407 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
2408 | ret = 0; | |
9ead190b | 2409 | goto out_put; |
f4e40156 JM |
2410 | } |
2411 | ||
2412 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
2413 | if (!mcast) { | |
2414 | ret = -ENOMEM; | |
9ead190b | 2415 | goto out_put; |
f4e40156 JM |
2416 | } |
2417 | ||
2418 | mcast->lid = cmd.mlid; | |
2419 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 2420 | |
f4e40156 | 2421 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
2422 | if (!ret) |
2423 | list_add_tail(&mcast->list, &obj->mcast_list); | |
2424 | else | |
f4e40156 JM |
2425 | kfree(mcast); |
2426 | ||
9ead190b | 2427 | out_put: |
e214a0fe | 2428 | put_qp_write(qp); |
bc38a6ab RD |
2429 | |
2430 | return ret ? ret : in_len; | |
2431 | } | |
2432 | ||
2433 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
2434 | const char __user *buf, int in_len, | |
2435 | int out_len) | |
2436 | { | |
2437 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 2438 | struct ib_uqp_object *obj; |
bc38a6ab | 2439 | struct ib_qp *qp; |
f4e40156 | 2440 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
2441 | int ret = -EINVAL; |
2442 | ||
2443 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2444 | return -EFAULT; | |
2445 | ||
e214a0fe | 2446 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2447 | if (!qp) |
2448 | return -EINVAL; | |
bc38a6ab | 2449 | |
f4e40156 JM |
2450 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
2451 | if (ret) | |
9ead190b | 2452 | goto out_put; |
f4e40156 | 2453 | |
9ead190b | 2454 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 2455 | |
9ead190b | 2456 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
2457 | if (cmd.mlid == mcast->lid && |
2458 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
2459 | list_del(&mcast->list); | |
2460 | kfree(mcast); | |
2461 | break; | |
2462 | } | |
2463 | ||
9ead190b | 2464 | out_put: |
e214a0fe | 2465 | put_qp_write(qp); |
bc38a6ab RD |
2466 | |
2467 | return ret ? ret : in_len; | |
2468 | } | |
f520ba5a | 2469 | |
c89d1bed SH |
2470 | static int __uverbs_create_xsrq(struct ib_uverbs_file *file, |
2471 | struct ib_uverbs_create_xsrq *cmd, | |
2472 | struct ib_udata *udata) | |
f520ba5a | 2473 | { |
f520ba5a | 2474 | struct ib_uverbs_create_srq_resp resp; |
8541f8de | 2475 | struct ib_usrq_object *obj; |
f520ba5a RD |
2476 | struct ib_pd *pd; |
2477 | struct ib_srq *srq; | |
8541f8de | 2478 | struct ib_uobject *uninitialized_var(xrcd_uobj); |
f520ba5a RD |
2479 | struct ib_srq_init_attr attr; |
2480 | int ret; | |
2481 | ||
9ead190b RD |
2482 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
2483 | if (!obj) | |
f520ba5a RD |
2484 | return -ENOMEM; |
2485 | ||
3bea57a5 | 2486 | init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_class); |
8541f8de | 2487 | down_write(&obj->uevent.uobject.mutex); |
f520ba5a | 2488 | |
8541f8de | 2489 | if (cmd->srq_type == IB_SRQT_XRC) { |
8541f8de SH |
2490 | attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj); |
2491 | if (!attr.ext.xrc.xrcd) { | |
2492 | ret = -EINVAL; | |
5909ce54 | 2493 | goto err; |
8541f8de SH |
2494 | } |
2495 | ||
2496 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); | |
2497 | atomic_inc(&obj->uxrcd->refcnt); | |
5909ce54 RD |
2498 | |
2499 | attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0); | |
2500 | if (!attr.ext.xrc.cq) { | |
2501 | ret = -EINVAL; | |
2502 | goto err_put_xrcd; | |
2503 | } | |
2504 | } | |
2505 | ||
2506 | pd = idr_read_pd(cmd->pd_handle, file->ucontext); | |
2507 | if (!pd) { | |
2508 | ret = -EINVAL; | |
2509 | goto err_put_cq; | |
8541f8de SH |
2510 | } |
2511 | ||
f520ba5a RD |
2512 | attr.event_handler = ib_uverbs_srq_event_handler; |
2513 | attr.srq_context = file; | |
8541f8de SH |
2514 | attr.srq_type = cmd->srq_type; |
2515 | attr.attr.max_wr = cmd->max_wr; | |
2516 | attr.attr.max_sge = cmd->max_sge; | |
2517 | attr.attr.srq_limit = cmd->srq_limit; | |
f520ba5a | 2518 | |
8541f8de SH |
2519 | obj->uevent.events_reported = 0; |
2520 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
f520ba5a | 2521 | |
8541f8de | 2522 | srq = pd->device->create_srq(pd, &attr, udata); |
f520ba5a RD |
2523 | if (IS_ERR(srq)) { |
2524 | ret = PTR_ERR(srq); | |
ec924b47 | 2525 | goto err_put; |
f520ba5a RD |
2526 | } |
2527 | ||
8541f8de SH |
2528 | srq->device = pd->device; |
2529 | srq->pd = pd; | |
2530 | srq->srq_type = cmd->srq_type; | |
2531 | srq->uobject = &obj->uevent.uobject; | |
f520ba5a RD |
2532 | srq->event_handler = attr.event_handler; |
2533 | srq->srq_context = attr.srq_context; | |
8541f8de SH |
2534 | |
2535 | if (cmd->srq_type == IB_SRQT_XRC) { | |
2536 | srq->ext.xrc.cq = attr.ext.xrc.cq; | |
2537 | srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; | |
2538 | atomic_inc(&attr.ext.xrc.cq->usecnt); | |
2539 | atomic_inc(&attr.ext.xrc.xrcd->usecnt); | |
2540 | } | |
2541 | ||
f520ba5a RD |
2542 | atomic_inc(&pd->usecnt); |
2543 | atomic_set(&srq->usecnt, 0); | |
2544 | ||
8541f8de SH |
2545 | obj->uevent.uobject.object = srq; |
2546 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); | |
f520ba5a RD |
2547 | if (ret) |
2548 | goto err_destroy; | |
2549 | ||
9ead190b | 2550 | memset(&resp, 0, sizeof resp); |
8541f8de | 2551 | resp.srq_handle = obj->uevent.uobject.id; |
ea88fd16 DB |
2552 | resp.max_wr = attr.attr.max_wr; |
2553 | resp.max_sge = attr.attr.max_sge; | |
8541f8de SH |
2554 | if (cmd->srq_type == IB_SRQT_XRC) |
2555 | resp.srqn = srq->ext.xrc.srq_num; | |
f520ba5a | 2556 | |
8541f8de | 2557 | if (copy_to_user((void __user *) (unsigned long) cmd->response, |
f520ba5a RD |
2558 | &resp, sizeof resp)) { |
2559 | ret = -EFAULT; | |
9ead190b | 2560 | goto err_copy; |
f520ba5a RD |
2561 | } |
2562 | ||
8541f8de SH |
2563 | if (cmd->srq_type == IB_SRQT_XRC) { |
2564 | put_uobj_read(xrcd_uobj); | |
2565 | put_cq_read(attr.ext.xrc.cq); | |
2566 | } | |
9ead190b RD |
2567 | put_pd_read(pd); |
2568 | ||
95ed644f | 2569 | mutex_lock(&file->mutex); |
8541f8de | 2570 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list); |
95ed644f | 2571 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 2572 | |
8541f8de | 2573 | obj->uevent.uobject.live = 1; |
9ead190b | 2574 | |
8541f8de | 2575 | up_write(&obj->uevent.uobject.mutex); |
f520ba5a | 2576 | |
8541f8de | 2577 | return 0; |
f520ba5a | 2578 | |
9ead190b | 2579 | err_copy: |
8541f8de | 2580 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); |
f520ba5a RD |
2581 | |
2582 | err_destroy: | |
2583 | ib_destroy_srq(srq); | |
2584 | ||
ec924b47 | 2585 | err_put: |
5909ce54 | 2586 | put_pd_read(pd); |
8541f8de SH |
2587 | |
2588 | err_put_cq: | |
2589 | if (cmd->srq_type == IB_SRQT_XRC) | |
2590 | put_cq_read(attr.ext.xrc.cq); | |
2591 | ||
5909ce54 RD |
2592 | err_put_xrcd: |
2593 | if (cmd->srq_type == IB_SRQT_XRC) { | |
2594 | atomic_dec(&obj->uxrcd->refcnt); | |
2595 | put_uobj_read(xrcd_uobj); | |
2596 | } | |
ec924b47 | 2597 | |
9ead190b | 2598 | err: |
8541f8de | 2599 | put_uobj_write(&obj->uevent.uobject); |
f520ba5a RD |
2600 | return ret; |
2601 | } | |
2602 | ||
8541f8de SH |
2603 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, |
2604 | const char __user *buf, int in_len, | |
2605 | int out_len) | |
2606 | { | |
2607 | struct ib_uverbs_create_srq cmd; | |
2608 | struct ib_uverbs_create_xsrq xcmd; | |
2609 | struct ib_uverbs_create_srq_resp resp; | |
2610 | struct ib_udata udata; | |
2611 | int ret; | |
2612 | ||
2613 | if (out_len < sizeof resp) | |
2614 | return -ENOSPC; | |
2615 | ||
2616 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2617 | return -EFAULT; | |
2618 | ||
2619 | xcmd.response = cmd.response; | |
2620 | xcmd.user_handle = cmd.user_handle; | |
2621 | xcmd.srq_type = IB_SRQT_BASIC; | |
2622 | xcmd.pd_handle = cmd.pd_handle; | |
2623 | xcmd.max_wr = cmd.max_wr; | |
2624 | xcmd.max_sge = cmd.max_sge; | |
2625 | xcmd.srq_limit = cmd.srq_limit; | |
2626 | ||
2627 | INIT_UDATA(&udata, buf + sizeof cmd, | |
2628 | (unsigned long) cmd.response + sizeof resp, | |
2629 | in_len - sizeof cmd, out_len - sizeof resp); | |
2630 | ||
2631 | ret = __uverbs_create_xsrq(file, &xcmd, &udata); | |
2632 | if (ret) | |
2633 | return ret; | |
2634 | ||
2635 | return in_len; | |
2636 | } | |
2637 | ||
2638 | ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, | |
2639 | const char __user *buf, int in_len, int out_len) | |
2640 | { | |
2641 | struct ib_uverbs_create_xsrq cmd; | |
2642 | struct ib_uverbs_create_srq_resp resp; | |
2643 | struct ib_udata udata; | |
2644 | int ret; | |
2645 | ||
2646 | if (out_len < sizeof resp) | |
2647 | return -ENOSPC; | |
2648 | ||
2649 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2650 | return -EFAULT; | |
2651 | ||
2652 | INIT_UDATA(&udata, buf + sizeof cmd, | |
2653 | (unsigned long) cmd.response + sizeof resp, | |
2654 | in_len - sizeof cmd, out_len - sizeof resp); | |
2655 | ||
2656 | ret = __uverbs_create_xsrq(file, &cmd, &udata); | |
2657 | if (ret) | |
2658 | return ret; | |
2659 | ||
2660 | return in_len; | |
2661 | } | |
2662 | ||
f520ba5a RD |
2663 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, |
2664 | const char __user *buf, int in_len, | |
2665 | int out_len) | |
2666 | { | |
2667 | struct ib_uverbs_modify_srq cmd; | |
9bc57e2d | 2668 | struct ib_udata udata; |
f520ba5a RD |
2669 | struct ib_srq *srq; |
2670 | struct ib_srq_attr attr; | |
2671 | int ret; | |
2672 | ||
2673 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2674 | return -EFAULT; | |
2675 | ||
9bc57e2d RC |
2676 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
2677 | out_len); | |
2678 | ||
9ead190b RD |
2679 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2680 | if (!srq) | |
2681 | return -EINVAL; | |
f520ba5a RD |
2682 | |
2683 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
2684 | attr.srq_limit = cmd.srq_limit; |
2685 | ||
9bc57e2d | 2686 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
f520ba5a | 2687 | |
9ead190b | 2688 | put_srq_read(srq); |
f520ba5a RD |
2689 | |
2690 | return ret ? ret : in_len; | |
2691 | } | |
2692 | ||
8bdb0e86 DB |
2693 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
2694 | const char __user *buf, | |
2695 | int in_len, int out_len) | |
2696 | { | |
2697 | struct ib_uverbs_query_srq cmd; | |
2698 | struct ib_uverbs_query_srq_resp resp; | |
2699 | struct ib_srq_attr attr; | |
2700 | struct ib_srq *srq; | |
2701 | int ret; | |
2702 | ||
2703 | if (out_len < sizeof resp) | |
2704 | return -ENOSPC; | |
2705 | ||
2706 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2707 | return -EFAULT; | |
2708 | ||
9ead190b RD |
2709 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2710 | if (!srq) | |
2711 | return -EINVAL; | |
8bdb0e86 | 2712 | |
9ead190b | 2713 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 2714 | |
9ead190b | 2715 | put_srq_read(srq); |
8bdb0e86 DB |
2716 | |
2717 | if (ret) | |
9ead190b | 2718 | return ret; |
8bdb0e86 DB |
2719 | |
2720 | memset(&resp, 0, sizeof resp); | |
2721 | ||
2722 | resp.max_wr = attr.max_wr; | |
2723 | resp.max_sge = attr.max_sge; | |
2724 | resp.srq_limit = attr.srq_limit; | |
2725 | ||
2726 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2727 | &resp, sizeof resp)) | |
9ead190b | 2728 | return -EFAULT; |
8bdb0e86 | 2729 | |
9ead190b | 2730 | return in_len; |
8bdb0e86 DB |
2731 | } |
2732 | ||
f520ba5a RD |
2733 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
2734 | const char __user *buf, int in_len, | |
2735 | int out_len) | |
2736 | { | |
63aaf647 RD |
2737 | struct ib_uverbs_destroy_srq cmd; |
2738 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 2739 | struct ib_uobject *uobj; |
63aaf647 | 2740 | struct ib_srq *srq; |
9ead190b | 2741 | struct ib_uevent_object *obj; |
63aaf647 | 2742 | int ret = -EINVAL; |
f520ba5a RD |
2743 | |
2744 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2745 | return -EFAULT; | |
2746 | ||
9ead190b RD |
2747 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
2748 | if (!uobj) | |
2749 | return -EINVAL; | |
2750 | srq = uobj->object; | |
2751 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
63aaf647 | 2752 | |
9ead190b RD |
2753 | ret = ib_destroy_srq(srq); |
2754 | if (!ret) | |
2755 | uobj->live = 0; | |
f520ba5a | 2756 | |
9ead190b | 2757 | put_uobj_write(uobj); |
f520ba5a | 2758 | |
f520ba5a | 2759 | if (ret) |
9ead190b | 2760 | return ret; |
f520ba5a | 2761 | |
9ead190b | 2762 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 2763 | |
95ed644f | 2764 | mutex_lock(&file->mutex); |
9ead190b | 2765 | list_del(&uobj->list); |
95ed644f | 2766 | mutex_unlock(&file->mutex); |
f520ba5a | 2767 | |
9ead190b | 2768 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 2769 | |
9ead190b RD |
2770 | memset(&resp, 0, sizeof resp); |
2771 | resp.events_reported = obj->events_reported; | |
63aaf647 | 2772 | |
9ead190b | 2773 | put_uobj(uobj); |
f520ba5a | 2774 | |
63aaf647 RD |
2775 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2776 | &resp, sizeof resp)) | |
2777 | ret = -EFAULT; | |
2778 | ||
f520ba5a RD |
2779 | return ret ? ret : in_len; |
2780 | } |