Commit | Line | Data |
---|---|---|
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" }; | |
6b52a12b | 51 | static struct uverbs_lock_class mw_lock_class = { .name = "MW-uobj" }; |
3bea57a5 RD |
52 | static struct uverbs_lock_class cq_lock_class = { .name = "CQ-uobj" }; |
53 | static struct uverbs_lock_class qp_lock_class = { .name = "QP-uobj" }; | |
54 | static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" }; | |
55 | static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" }; | |
56 | static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" }; | |
436f2ad0 | 57 | static struct uverbs_lock_class rule_lock_class = { .name = "RULE-uobj" }; |
bc38a6ab | 58 | |
9ead190b RD |
59 | /* |
60 | * The ib_uobject locking scheme is as follows: | |
61 | * | |
62 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it | |
63 | * needs to be held during all idr operations. When an object is | |
64 | * looked up, a reference must be taken on the object's kref before | |
65 | * dropping this lock. | |
66 | * | |
67 | * - Each object also has an rwsem. This rwsem must be held for | |
68 | * reading while an operation that uses the object is performed. | |
69 | * For example, while registering an MR, the associated PD's | |
70 | * uobject.mutex must be held for reading. The rwsem must be held | |
71 | * for writing while initializing or destroying an object. | |
72 | * | |
73 | * - In addition, each object has a "live" flag. If this flag is not | |
74 | * set, then lookups of the object will fail even if it is found in | |
75 | * the idr. This handles a reader that blocks and does not acquire | |
76 | * the rwsem until after the object is destroyed. The destroy | |
77 | * operation will set the live flag to 0 and then drop the rwsem; | |
78 | * this will allow the reader to acquire the rwsem, see that the | |
79 | * live flag is 0, and then drop the rwsem and its reference to | |
80 | * object. The underlying storage will not be freed until the last | |
81 | * reference to the object is dropped. | |
82 | */ | |
83 | ||
84 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, | |
3bea57a5 | 85 | struct ib_ucontext *context, struct uverbs_lock_class *c) |
9ead190b RD |
86 | { |
87 | uobj->user_handle = user_handle; | |
88 | uobj->context = context; | |
89 | kref_init(&uobj->ref); | |
90 | init_rwsem(&uobj->mutex); | |
3bea57a5 | 91 | lockdep_set_class_and_name(&uobj->mutex, &c->key, c->name); |
9ead190b RD |
92 | uobj->live = 0; |
93 | } | |
94 | ||
95 | static void release_uobj(struct kref *kref) | |
96 | { | |
97 | kfree(container_of(kref, struct ib_uobject, ref)); | |
98 | } | |
99 | ||
100 | static void put_uobj(struct ib_uobject *uobj) | |
101 | { | |
102 | kref_put(&uobj->ref, release_uobj); | |
103 | } | |
104 | ||
105 | static void put_uobj_read(struct ib_uobject *uobj) | |
106 | { | |
107 | up_read(&uobj->mutex); | |
108 | put_uobj(uobj); | |
109 | } | |
110 | ||
111 | static void put_uobj_write(struct ib_uobject *uobj) | |
112 | { | |
113 | up_write(&uobj->mutex); | |
114 | put_uobj(uobj); | |
115 | } | |
116 | ||
117 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) | |
3463175d RD |
118 | { |
119 | int ret; | |
120 | ||
3b069c5d | 121 | idr_preload(GFP_KERNEL); |
9ead190b | 122 | spin_lock(&ib_uverbs_idr_lock); |
3463175d | 123 | |
3b069c5d TH |
124 | ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT); |
125 | if (ret >= 0) | |
126 | uobj->id = ret; | |
127 | ||
128 | spin_unlock(&ib_uverbs_idr_lock); | |
129 | idr_preload_end(); | |
3463175d | 130 | |
3b069c5d | 131 | return ret < 0 ? ret : 0; |
3463175d RD |
132 | } |
133 | ||
9ead190b RD |
134 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
135 | { | |
136 | spin_lock(&ib_uverbs_idr_lock); | |
137 | idr_remove(idr, uobj->id); | |
138 | spin_unlock(&ib_uverbs_idr_lock); | |
139 | } | |
140 | ||
141 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, | |
142 | struct ib_ucontext *context) | |
143 | { | |
144 | struct ib_uobject *uobj; | |
145 | ||
146 | spin_lock(&ib_uverbs_idr_lock); | |
147 | uobj = idr_find(idr, id); | |
cbfb50e6 RD |
148 | if (uobj) { |
149 | if (uobj->context == context) | |
150 | kref_get(&uobj->ref); | |
151 | else | |
152 | uobj = NULL; | |
153 | } | |
9ead190b RD |
154 | spin_unlock(&ib_uverbs_idr_lock); |
155 | ||
156 | return uobj; | |
157 | } | |
158 | ||
159 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, | |
1ccf6aa1 | 160 | struct ib_ucontext *context, int nested) |
9ead190b RD |
161 | { |
162 | struct ib_uobject *uobj; | |
163 | ||
164 | uobj = __idr_get_uobj(idr, id, context); | |
165 | if (!uobj) | |
166 | return NULL; | |
167 | ||
1ccf6aa1 RD |
168 | if (nested) |
169 | down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING); | |
170 | else | |
171 | down_read(&uobj->mutex); | |
9ead190b RD |
172 | if (!uobj->live) { |
173 | put_uobj_read(uobj); | |
174 | return NULL; | |
175 | } | |
176 | ||
177 | return uobj; | |
178 | } | |
179 | ||
180 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, | |
181 | struct ib_ucontext *context) | |
182 | { | |
183 | struct ib_uobject *uobj; | |
184 | ||
185 | uobj = __idr_get_uobj(idr, id, context); | |
186 | if (!uobj) | |
187 | return NULL; | |
188 | ||
189 | down_write(&uobj->mutex); | |
190 | if (!uobj->live) { | |
191 | put_uobj_write(uobj); | |
192 | return NULL; | |
193 | } | |
194 | ||
195 | return uobj; | |
196 | } | |
197 | ||
1ccf6aa1 RD |
198 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context, |
199 | int nested) | |
9ead190b RD |
200 | { |
201 | struct ib_uobject *uobj; | |
202 | ||
1ccf6aa1 | 203 | uobj = idr_read_uobj(idr, id, context, nested); |
9ead190b RD |
204 | return uobj ? uobj->object : NULL; |
205 | } | |
206 | ||
207 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) | |
208 | { | |
1ccf6aa1 | 209 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0); |
9ead190b RD |
210 | } |
211 | ||
212 | static void put_pd_read(struct ib_pd *pd) | |
213 | { | |
214 | put_uobj_read(pd->uobject); | |
215 | } | |
216 | ||
1ccf6aa1 | 217 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested) |
9ead190b | 218 | { |
1ccf6aa1 | 219 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested); |
9ead190b RD |
220 | } |
221 | ||
222 | static void put_cq_read(struct ib_cq *cq) | |
223 | { | |
224 | put_uobj_read(cq->uobject); | |
225 | } | |
226 | ||
227 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) | |
228 | { | |
1ccf6aa1 | 229 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0); |
9ead190b RD |
230 | } |
231 | ||
232 | static void put_ah_read(struct ib_ah *ah) | |
233 | { | |
234 | put_uobj_read(ah->uobject); | |
235 | } | |
236 | ||
237 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) | |
238 | { | |
1ccf6aa1 | 239 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0); |
9ead190b RD |
240 | } |
241 | ||
e214a0fe EC |
242 | static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context) |
243 | { | |
244 | struct ib_uobject *uobj; | |
245 | ||
246 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context); | |
247 | return uobj ? uobj->object : NULL; | |
248 | } | |
249 | ||
9ead190b RD |
250 | static void put_qp_read(struct ib_qp *qp) |
251 | { | |
252 | put_uobj_read(qp->uobject); | |
253 | } | |
254 | ||
e214a0fe EC |
255 | static void put_qp_write(struct ib_qp *qp) |
256 | { | |
257 | put_uobj_write(qp->uobject); | |
258 | } | |
259 | ||
9ead190b RD |
260 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) |
261 | { | |
1ccf6aa1 | 262 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0); |
9ead190b RD |
263 | } |
264 | ||
265 | static void put_srq_read(struct ib_srq *srq) | |
266 | { | |
267 | put_uobj_read(srq->uobject); | |
268 | } | |
269 | ||
53d0bd1e SH |
270 | static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context, |
271 | struct ib_uobject **uobj) | |
272 | { | |
273 | *uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0); | |
274 | return *uobj ? (*uobj)->object : NULL; | |
275 | } | |
276 | ||
277 | static void put_xrcd_read(struct ib_uobject *uobj) | |
278 | { | |
279 | put_uobj_read(uobj); | |
280 | } | |
281 | ||
bc38a6ab RD |
282 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
283 | const char __user *buf, | |
284 | int in_len, int out_len) | |
285 | { | |
286 | struct ib_uverbs_get_context cmd; | |
287 | struct ib_uverbs_get_context_resp resp; | |
288 | struct ib_udata udata; | |
289 | struct ib_device *ibdev = file->device->ib_dev; | |
63c47c28 | 290 | struct ib_ucontext *ucontext; |
6b73597e | 291 | struct file *filp; |
63c47c28 | 292 | int ret; |
bc38a6ab RD |
293 | |
294 | if (out_len < sizeof resp) | |
295 | return -ENOSPC; | |
296 | ||
297 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
298 | return -EFAULT; | |
299 | ||
95ed644f | 300 | mutex_lock(&file->mutex); |
63c47c28 RD |
301 | |
302 | if (file->ucontext) { | |
303 | ret = -EINVAL; | |
304 | goto err; | |
305 | } | |
306 | ||
bc38a6ab RD |
307 | INIT_UDATA(&udata, buf + sizeof cmd, |
308 | (unsigned long) cmd.response + sizeof resp, | |
309 | in_len - sizeof cmd, out_len - sizeof resp); | |
310 | ||
63c47c28 | 311 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
77f76013 | 312 | if (IS_ERR(ucontext)) { |
df42245a | 313 | ret = PTR_ERR(ucontext); |
77f76013 GC |
314 | goto err; |
315 | } | |
bc38a6ab | 316 | |
63c47c28 RD |
317 | ucontext->device = ibdev; |
318 | INIT_LIST_HEAD(&ucontext->pd_list); | |
319 | INIT_LIST_HEAD(&ucontext->mr_list); | |
320 | INIT_LIST_HEAD(&ucontext->mw_list); | |
321 | INIT_LIST_HEAD(&ucontext->cq_list); | |
322 | INIT_LIST_HEAD(&ucontext->qp_list); | |
323 | INIT_LIST_HEAD(&ucontext->srq_list); | |
324 | INIT_LIST_HEAD(&ucontext->ah_list); | |
53d0bd1e | 325 | INIT_LIST_HEAD(&ucontext->xrcd_list); |
436f2ad0 | 326 | INIT_LIST_HEAD(&ucontext->rule_list); |
f7c6a7b5 | 327 | ucontext->closing = 0; |
bc38a6ab | 328 | |
6b73597e RD |
329 | resp.num_comp_vectors = file->device->num_comp_vectors; |
330 | ||
da183c7a | 331 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
332 | if (ret < 0) |
333 | goto err_free; | |
334 | resp.async_fd = ret; | |
335 | ||
336 | filp = ib_uverbs_alloc_event_file(file, 1); | |
6b73597e RD |
337 | if (IS_ERR(filp)) { |
338 | ret = PTR_ERR(filp); | |
b1e4594b | 339 | goto err_fd; |
6b73597e | 340 | } |
bc38a6ab RD |
341 | |
342 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
343 | &resp, sizeof resp)) { |
344 | ret = -EFAULT; | |
6b73597e | 345 | goto err_file; |
63c47c28 RD |
346 | } |
347 | ||
6b73597e RD |
348 | file->async_file = filp->private_data; |
349 | ||
350 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
351 | ib_uverbs_event_handler); | |
352 | ret = ib_register_event_handler(&file->event_handler); | |
353 | if (ret) | |
354 | goto err_file; | |
355 | ||
356 | kref_get(&file->async_file->ref); | |
357 | kref_get(&file->ref); | |
70a30e16 | 358 | file->ucontext = ucontext; |
6b73597e RD |
359 | |
360 | fd_install(resp.async_fd, filp); | |
361 | ||
95ed644f | 362 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
363 | |
364 | return in_len; | |
365 | ||
6b73597e | 366 | err_file: |
6b73597e RD |
367 | fput(filp); |
368 | ||
b1e4594b AV |
369 | err_fd: |
370 | put_unused_fd(resp.async_fd); | |
371 | ||
63c47c28 RD |
372 | err_free: |
373 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 374 | |
63c47c28 | 375 | err: |
95ed644f | 376 | mutex_unlock(&file->mutex); |
63c47c28 | 377 | return ret; |
bc38a6ab RD |
378 | } |
379 | ||
380 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
381 | const char __user *buf, | |
382 | int in_len, int out_len) | |
383 | { | |
384 | struct ib_uverbs_query_device cmd; | |
385 | struct ib_uverbs_query_device_resp resp; | |
386 | struct ib_device_attr attr; | |
387 | int ret; | |
388 | ||
389 | if (out_len < sizeof resp) | |
390 | return -ENOSPC; | |
391 | ||
392 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
393 | return -EFAULT; | |
394 | ||
395 | ret = ib_query_device(file->device->ib_dev, &attr); | |
396 | if (ret) | |
397 | return ret; | |
398 | ||
399 | memset(&resp, 0, sizeof resp); | |
400 | ||
401 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 402 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
403 | resp.sys_image_guid = attr.sys_image_guid; |
404 | resp.max_mr_size = attr.max_mr_size; | |
405 | resp.page_size_cap = attr.page_size_cap; | |
406 | resp.vendor_id = attr.vendor_id; | |
407 | resp.vendor_part_id = attr.vendor_part_id; | |
408 | resp.hw_ver = attr.hw_ver; | |
409 | resp.max_qp = attr.max_qp; | |
410 | resp.max_qp_wr = attr.max_qp_wr; | |
411 | resp.device_cap_flags = attr.device_cap_flags; | |
412 | resp.max_sge = attr.max_sge; | |
413 | resp.max_sge_rd = attr.max_sge_rd; | |
414 | resp.max_cq = attr.max_cq; | |
415 | resp.max_cqe = attr.max_cqe; | |
416 | resp.max_mr = attr.max_mr; | |
417 | resp.max_pd = attr.max_pd; | |
418 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
419 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
420 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
421 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
422 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
423 | resp.atomic_cap = attr.atomic_cap; | |
424 | resp.max_ee = attr.max_ee; | |
425 | resp.max_rdd = attr.max_rdd; | |
426 | resp.max_mw = attr.max_mw; | |
427 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
428 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
429 | resp.max_mcast_grp = attr.max_mcast_grp; | |
430 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
431 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
432 | resp.max_ah = attr.max_ah; | |
433 | resp.max_fmr = attr.max_fmr; | |
434 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
435 | resp.max_srq = attr.max_srq; | |
436 | resp.max_srq_wr = attr.max_srq_wr; | |
437 | resp.max_srq_sge = attr.max_srq_sge; | |
438 | resp.max_pkeys = attr.max_pkeys; | |
439 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
440 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
441 | ||
442 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
443 | &resp, sizeof resp)) | |
444 | return -EFAULT; | |
445 | ||
446 | return in_len; | |
447 | } | |
448 | ||
449 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
450 | const char __user *buf, | |
451 | int in_len, int out_len) | |
452 | { | |
453 | struct ib_uverbs_query_port cmd; | |
454 | struct ib_uverbs_query_port_resp resp; | |
455 | struct ib_port_attr attr; | |
456 | int ret; | |
457 | ||
458 | if (out_len < sizeof resp) | |
459 | return -ENOSPC; | |
460 | ||
461 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
462 | return -EFAULT; | |
463 | ||
464 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
465 | if (ret) | |
466 | return ret; | |
467 | ||
468 | memset(&resp, 0, sizeof resp); | |
469 | ||
470 | resp.state = attr.state; | |
471 | resp.max_mtu = attr.max_mtu; | |
472 | resp.active_mtu = attr.active_mtu; | |
473 | resp.gid_tbl_len = attr.gid_tbl_len; | |
474 | resp.port_cap_flags = attr.port_cap_flags; | |
475 | resp.max_msg_sz = attr.max_msg_sz; | |
476 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
477 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
478 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
479 | resp.lid = attr.lid; | |
480 | resp.sm_lid = attr.sm_lid; | |
481 | resp.lmc = attr.lmc; | |
482 | resp.max_vl_num = attr.max_vl_num; | |
483 | resp.sm_sl = attr.sm_sl; | |
484 | resp.subnet_timeout = attr.subnet_timeout; | |
485 | resp.init_type_reply = attr.init_type_reply; | |
486 | resp.active_width = attr.active_width; | |
487 | resp.active_speed = attr.active_speed; | |
488 | resp.phys_state = attr.phys_state; | |
2420b60b EC |
489 | resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev, |
490 | cmd.port_num); | |
bc38a6ab RD |
491 | |
492 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
493 | &resp, sizeof resp)) | |
494 | return -EFAULT; | |
495 | ||
496 | return in_len; | |
497 | } | |
498 | ||
bc38a6ab RD |
499 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
500 | const char __user *buf, | |
501 | int in_len, int out_len) | |
502 | { | |
503 | struct ib_uverbs_alloc_pd cmd; | |
504 | struct ib_uverbs_alloc_pd_resp resp; | |
505 | struct ib_udata udata; | |
506 | struct ib_uobject *uobj; | |
507 | struct ib_pd *pd; | |
508 | int ret; | |
509 | ||
510 | if (out_len < sizeof resp) | |
511 | return -ENOSPC; | |
512 | ||
513 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
514 | return -EFAULT; | |
515 | ||
516 | INIT_UDATA(&udata, buf + sizeof cmd, | |
517 | (unsigned long) cmd.response + sizeof resp, | |
518 | in_len - sizeof cmd, out_len - sizeof resp); | |
519 | ||
520 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
521 | if (!uobj) | |
522 | return -ENOMEM; | |
523 | ||
3bea57a5 | 524 | init_uobj(uobj, 0, file->ucontext, &pd_lock_class); |
9ead190b | 525 | down_write(&uobj->mutex); |
bc38a6ab RD |
526 | |
527 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
528 | file->ucontext, &udata); | |
529 | if (IS_ERR(pd)) { | |
530 | ret = PTR_ERR(pd); | |
531 | goto err; | |
532 | } | |
533 | ||
534 | pd->device = file->device->ib_dev; | |
535 | pd->uobject = uobj; | |
536 | atomic_set(&pd->usecnt, 0); | |
537 | ||
9ead190b RD |
538 | uobj->object = pd; |
539 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 540 | if (ret) |
9ead190b | 541 | goto err_idr; |
bc38a6ab RD |
542 | |
543 | memset(&resp, 0, sizeof resp); | |
544 | resp.pd_handle = uobj->id; | |
545 | ||
546 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
547 | &resp, sizeof resp)) { | |
548 | ret = -EFAULT; | |
9ead190b | 549 | goto err_copy; |
bc38a6ab RD |
550 | } |
551 | ||
95ed644f | 552 | mutex_lock(&file->mutex); |
eb9d3cd5 | 553 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 554 | mutex_unlock(&file->mutex); |
bc38a6ab | 555 | |
9ead190b RD |
556 | uobj->live = 1; |
557 | ||
558 | up_write(&uobj->mutex); | |
bc38a6ab | 559 | |
eb9d3cd5 RD |
560 | return in_len; |
561 | ||
9ead190b RD |
562 | err_copy: |
563 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 564 | |
9ead190b | 565 | err_idr: |
bc38a6ab RD |
566 | ib_dealloc_pd(pd); |
567 | ||
568 | err: | |
9ead190b | 569 | put_uobj_write(uobj); |
bc38a6ab RD |
570 | return ret; |
571 | } | |
572 | ||
573 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
574 | const char __user *buf, | |
575 | int in_len, int out_len) | |
576 | { | |
577 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 578 | struct ib_uobject *uobj; |
9ead190b | 579 | int ret; |
bc38a6ab RD |
580 | |
581 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
582 | return -EFAULT; | |
583 | ||
9ead190b RD |
584 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
585 | if (!uobj) | |
586 | return -EINVAL; | |
bc38a6ab | 587 | |
9ead190b RD |
588 | ret = ib_dealloc_pd(uobj->object); |
589 | if (!ret) | |
590 | uobj->live = 0; | |
bc38a6ab | 591 | |
9ead190b | 592 | put_uobj_write(uobj); |
bc38a6ab | 593 | |
bc38a6ab | 594 | if (ret) |
9ead190b | 595 | return ret; |
bc38a6ab | 596 | |
9ead190b | 597 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 598 | |
95ed644f | 599 | mutex_lock(&file->mutex); |
bc38a6ab | 600 | list_del(&uobj->list); |
95ed644f | 601 | mutex_unlock(&file->mutex); |
bc38a6ab | 602 | |
9ead190b | 603 | put_uobj(uobj); |
bc38a6ab | 604 | |
9ead190b | 605 | return in_len; |
bc38a6ab RD |
606 | } |
607 | ||
53d0bd1e SH |
608 | struct xrcd_table_entry { |
609 | struct rb_node node; | |
610 | struct ib_xrcd *xrcd; | |
611 | struct inode *inode; | |
612 | }; | |
613 | ||
614 | static int xrcd_table_insert(struct ib_uverbs_device *dev, | |
615 | struct inode *inode, | |
616 | struct ib_xrcd *xrcd) | |
617 | { | |
618 | struct xrcd_table_entry *entry, *scan; | |
619 | struct rb_node **p = &dev->xrcd_tree.rb_node; | |
620 | struct rb_node *parent = NULL; | |
621 | ||
622 | entry = kmalloc(sizeof *entry, GFP_KERNEL); | |
623 | if (!entry) | |
624 | return -ENOMEM; | |
625 | ||
626 | entry->xrcd = xrcd; | |
627 | entry->inode = inode; | |
628 | ||
629 | while (*p) { | |
630 | parent = *p; | |
631 | scan = rb_entry(parent, struct xrcd_table_entry, node); | |
632 | ||
633 | if (inode < scan->inode) { | |
634 | p = &(*p)->rb_left; | |
635 | } else if (inode > scan->inode) { | |
636 | p = &(*p)->rb_right; | |
637 | } else { | |
638 | kfree(entry); | |
639 | return -EEXIST; | |
640 | } | |
641 | } | |
642 | ||
643 | rb_link_node(&entry->node, parent, p); | |
644 | rb_insert_color(&entry->node, &dev->xrcd_tree); | |
645 | igrab(inode); | |
646 | return 0; | |
647 | } | |
648 | ||
649 | static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, | |
650 | struct inode *inode) | |
651 | { | |
652 | struct xrcd_table_entry *entry; | |
653 | struct rb_node *p = dev->xrcd_tree.rb_node; | |
654 | ||
655 | while (p) { | |
656 | entry = rb_entry(p, struct xrcd_table_entry, node); | |
657 | ||
658 | if (inode < entry->inode) | |
659 | p = p->rb_left; | |
660 | else if (inode > entry->inode) | |
661 | p = p->rb_right; | |
662 | else | |
663 | return entry; | |
664 | } | |
665 | ||
666 | return NULL; | |
667 | } | |
668 | ||
669 | static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) | |
670 | { | |
671 | struct xrcd_table_entry *entry; | |
672 | ||
673 | entry = xrcd_table_search(dev, inode); | |
674 | if (!entry) | |
675 | return NULL; | |
676 | ||
677 | return entry->xrcd; | |
678 | } | |
679 | ||
680 | static void xrcd_table_delete(struct ib_uverbs_device *dev, | |
681 | struct inode *inode) | |
682 | { | |
683 | struct xrcd_table_entry *entry; | |
684 | ||
685 | entry = xrcd_table_search(dev, inode); | |
686 | if (entry) { | |
687 | iput(inode); | |
688 | rb_erase(&entry->node, &dev->xrcd_tree); | |
689 | kfree(entry); | |
690 | } | |
691 | } | |
692 | ||
693 | ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, | |
694 | const char __user *buf, int in_len, | |
695 | int out_len) | |
696 | { | |
697 | struct ib_uverbs_open_xrcd cmd; | |
698 | struct ib_uverbs_open_xrcd_resp resp; | |
699 | struct ib_udata udata; | |
700 | struct ib_uxrcd_object *obj; | |
701 | struct ib_xrcd *xrcd = NULL; | |
2903ff01 | 702 | struct fd f = {NULL, 0}; |
53d0bd1e | 703 | struct inode *inode = NULL; |
2903ff01 | 704 | int ret = 0; |
53d0bd1e SH |
705 | int new_xrcd = 0; |
706 | ||
707 | if (out_len < sizeof resp) | |
708 | return -ENOSPC; | |
709 | ||
710 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
711 | return -EFAULT; | |
712 | ||
713 | INIT_UDATA(&udata, buf + sizeof cmd, | |
714 | (unsigned long) cmd.response + sizeof resp, | |
715 | in_len - sizeof cmd, out_len - sizeof resp); | |
716 | ||
717 | mutex_lock(&file->device->xrcd_tree_mutex); | |
718 | ||
719 | if (cmd.fd != -1) { | |
720 | /* search for file descriptor */ | |
2903ff01 AV |
721 | f = fdget(cmd.fd); |
722 | if (!f.file) { | |
53d0bd1e SH |
723 | ret = -EBADF; |
724 | goto err_tree_mutex_unlock; | |
725 | } | |
726 | ||
496ad9aa | 727 | inode = file_inode(f.file); |
53d0bd1e SH |
728 | xrcd = find_xrcd(file->device, inode); |
729 | if (!xrcd && !(cmd.oflags & O_CREAT)) { | |
730 | /* no file descriptor. Need CREATE flag */ | |
731 | ret = -EAGAIN; | |
732 | goto err_tree_mutex_unlock; | |
733 | } | |
734 | ||
735 | if (xrcd && cmd.oflags & O_EXCL) { | |
736 | ret = -EINVAL; | |
737 | goto err_tree_mutex_unlock; | |
738 | } | |
739 | } | |
740 | ||
741 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
742 | if (!obj) { | |
743 | ret = -ENOMEM; | |
744 | goto err_tree_mutex_unlock; | |
745 | } | |
746 | ||
3bea57a5 | 747 | init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_class); |
53d0bd1e SH |
748 | |
749 | down_write(&obj->uobject.mutex); | |
750 | ||
751 | if (!xrcd) { | |
752 | xrcd = file->device->ib_dev->alloc_xrcd(file->device->ib_dev, | |
753 | file->ucontext, &udata); | |
754 | if (IS_ERR(xrcd)) { | |
755 | ret = PTR_ERR(xrcd); | |
756 | goto err; | |
757 | } | |
758 | ||
759 | xrcd->inode = inode; | |
760 | xrcd->device = file->device->ib_dev; | |
761 | atomic_set(&xrcd->usecnt, 0); | |
762 | mutex_init(&xrcd->tgt_qp_mutex); | |
763 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
764 | new_xrcd = 1; | |
765 | } | |
766 | ||
767 | atomic_set(&obj->refcnt, 0); | |
768 | obj->uobject.object = xrcd; | |
769 | ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
770 | if (ret) | |
771 | goto err_idr; | |
772 | ||
773 | memset(&resp, 0, sizeof resp); | |
774 | resp.xrcd_handle = obj->uobject.id; | |
775 | ||
776 | if (inode) { | |
777 | if (new_xrcd) { | |
778 | /* create new inode/xrcd table entry */ | |
779 | ret = xrcd_table_insert(file->device, inode, xrcd); | |
780 | if (ret) | |
781 | goto err_insert_xrcd; | |
782 | } | |
783 | atomic_inc(&xrcd->usecnt); | |
784 | } | |
785 | ||
786 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
787 | &resp, sizeof resp)) { | |
788 | ret = -EFAULT; | |
789 | goto err_copy; | |
790 | } | |
791 | ||
2903ff01 AV |
792 | if (f.file) |
793 | fdput(f); | |
53d0bd1e SH |
794 | |
795 | mutex_lock(&file->mutex); | |
796 | list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list); | |
797 | mutex_unlock(&file->mutex); | |
798 | ||
799 | obj->uobject.live = 1; | |
800 | up_write(&obj->uobject.mutex); | |
801 | ||
802 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
803 | return in_len; | |
804 | ||
805 | err_copy: | |
806 | if (inode) { | |
807 | if (new_xrcd) | |
808 | xrcd_table_delete(file->device, inode); | |
809 | atomic_dec(&xrcd->usecnt); | |
810 | } | |
811 | ||
812 | err_insert_xrcd: | |
813 | idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
814 | ||
815 | err_idr: | |
816 | ib_dealloc_xrcd(xrcd); | |
817 | ||
818 | err: | |
819 | put_uobj_write(&obj->uobject); | |
820 | ||
821 | err_tree_mutex_unlock: | |
2903ff01 AV |
822 | if (f.file) |
823 | fdput(f); | |
53d0bd1e SH |
824 | |
825 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
826 | ||
827 | return ret; | |
828 | } | |
829 | ||
830 | ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, | |
831 | const char __user *buf, int in_len, | |
832 | int out_len) | |
833 | { | |
834 | struct ib_uverbs_close_xrcd cmd; | |
835 | struct ib_uobject *uobj; | |
836 | struct ib_xrcd *xrcd = NULL; | |
837 | struct inode *inode = NULL; | |
838 | struct ib_uxrcd_object *obj; | |
839 | int live; | |
840 | int ret = 0; | |
841 | ||
842 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
843 | return -EFAULT; | |
844 | ||
845 | mutex_lock(&file->device->xrcd_tree_mutex); | |
846 | uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext); | |
847 | if (!uobj) { | |
848 | ret = -EINVAL; | |
849 | goto out; | |
850 | } | |
851 | ||
852 | xrcd = uobj->object; | |
853 | inode = xrcd->inode; | |
854 | obj = container_of(uobj, struct ib_uxrcd_object, uobject); | |
855 | if (atomic_read(&obj->refcnt)) { | |
856 | put_uobj_write(uobj); | |
857 | ret = -EBUSY; | |
858 | goto out; | |
859 | } | |
860 | ||
861 | if (!inode || atomic_dec_and_test(&xrcd->usecnt)) { | |
862 | ret = ib_dealloc_xrcd(uobj->object); | |
863 | if (!ret) | |
864 | uobj->live = 0; | |
865 | } | |
866 | ||
867 | live = uobj->live; | |
868 | if (inode && ret) | |
869 | atomic_inc(&xrcd->usecnt); | |
870 | ||
871 | put_uobj_write(uobj); | |
872 | ||
873 | if (ret) | |
874 | goto out; | |
875 | ||
876 | if (inode && !live) | |
877 | xrcd_table_delete(file->device, inode); | |
878 | ||
879 | idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj); | |
880 | mutex_lock(&file->mutex); | |
881 | list_del(&uobj->list); | |
882 | mutex_unlock(&file->mutex); | |
883 | ||
884 | put_uobj(uobj); | |
885 | ret = in_len; | |
886 | ||
887 | out: | |
888 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
889 | return ret; | |
890 | } | |
891 | ||
892 | void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, | |
893 | struct ib_xrcd *xrcd) | |
894 | { | |
895 | struct inode *inode; | |
896 | ||
897 | inode = xrcd->inode; | |
898 | if (inode && !atomic_dec_and_test(&xrcd->usecnt)) | |
899 | return; | |
900 | ||
901 | ib_dealloc_xrcd(xrcd); | |
902 | ||
903 | if (inode) | |
904 | xrcd_table_delete(dev, inode); | |
905 | } | |
906 | ||
bc38a6ab RD |
907 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, |
908 | const char __user *buf, int in_len, | |
909 | int out_len) | |
910 | { | |
911 | struct ib_uverbs_reg_mr cmd; | |
912 | struct ib_uverbs_reg_mr_resp resp; | |
913 | struct ib_udata udata; | |
f7c6a7b5 | 914 | struct ib_uobject *uobj; |
bc38a6ab RD |
915 | struct ib_pd *pd; |
916 | struct ib_mr *mr; | |
917 | int ret; | |
918 | ||
919 | if (out_len < sizeof resp) | |
920 | return -ENOSPC; | |
921 | ||
922 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
923 | return -EFAULT; | |
924 | ||
925 | INIT_UDATA(&udata, buf + sizeof cmd, | |
926 | (unsigned long) cmd.response + sizeof resp, | |
927 | in_len - sizeof cmd, out_len - sizeof resp); | |
928 | ||
929 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
930 | return -EINVAL; | |
931 | ||
1c636f80 EC |
932 | ret = ib_check_mr_access(cmd.access_flags); |
933 | if (ret) | |
934 | return ret; | |
f575394f | 935 | |
f7c6a7b5 RD |
936 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
937 | if (!uobj) | |
bc38a6ab RD |
938 | return -ENOMEM; |
939 | ||
3bea57a5 | 940 | init_uobj(uobj, 0, file->ucontext, &mr_lock_class); |
f7c6a7b5 | 941 | down_write(&uobj->mutex); |
bc38a6ab | 942 | |
9ead190b | 943 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
aaf1aef5 RD |
944 | if (!pd) { |
945 | ret = -EINVAL; | |
f7c6a7b5 | 946 | goto err_free; |
aaf1aef5 | 947 | } |
bc38a6ab | 948 | |
f7c6a7b5 RD |
949 | mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
950 | cmd.access_flags, &udata); | |
bc38a6ab RD |
951 | if (IS_ERR(mr)) { |
952 | ret = PTR_ERR(mr); | |
9ead190b | 953 | goto err_put; |
bc38a6ab RD |
954 | } |
955 | ||
956 | mr->device = pd->device; | |
957 | mr->pd = pd; | |
f7c6a7b5 | 958 | mr->uobject = uobj; |
bc38a6ab RD |
959 | atomic_inc(&pd->usecnt); |
960 | atomic_set(&mr->usecnt, 0); | |
961 | ||
f7c6a7b5 RD |
962 | uobj->object = mr; |
963 | ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); | |
bc38a6ab RD |
964 | if (ret) |
965 | goto err_unreg; | |
966 | ||
9ead190b RD |
967 | memset(&resp, 0, sizeof resp); |
968 | resp.lkey = mr->lkey; | |
969 | resp.rkey = mr->rkey; | |
f7c6a7b5 | 970 | resp.mr_handle = uobj->id; |
bc38a6ab | 971 | |
bc38a6ab RD |
972 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
973 | &resp, sizeof resp)) { | |
974 | ret = -EFAULT; | |
9ead190b | 975 | goto err_copy; |
bc38a6ab RD |
976 | } |
977 | ||
9ead190b RD |
978 | put_pd_read(pd); |
979 | ||
95ed644f | 980 | mutex_lock(&file->mutex); |
f7c6a7b5 | 981 | list_add_tail(&uobj->list, &file->ucontext->mr_list); |
95ed644f | 982 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 983 | |
f7c6a7b5 | 984 | uobj->live = 1; |
9ead190b | 985 | |
f7c6a7b5 | 986 | up_write(&uobj->mutex); |
bc38a6ab RD |
987 | |
988 | return in_len; | |
989 | ||
9ead190b | 990 | err_copy: |
f7c6a7b5 | 991 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab RD |
992 | |
993 | err_unreg: | |
994 | ib_dereg_mr(mr); | |
995 | ||
9ead190b RD |
996 | err_put: |
997 | put_pd_read(pd); | |
bc38a6ab | 998 | |
bc38a6ab | 999 | err_free: |
f7c6a7b5 | 1000 | put_uobj_write(uobj); |
bc38a6ab RD |
1001 | return ret; |
1002 | } | |
1003 | ||
1004 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
1005 | const char __user *buf, int in_len, | |
1006 | int out_len) | |
1007 | { | |
1008 | struct ib_uverbs_dereg_mr cmd; | |
1009 | struct ib_mr *mr; | |
9ead190b | 1010 | struct ib_uobject *uobj; |
bc38a6ab RD |
1011 | int ret = -EINVAL; |
1012 | ||
1013 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1014 | return -EFAULT; | |
1015 | ||
9ead190b RD |
1016 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
1017 | if (!uobj) | |
1018 | return -EINVAL; | |
bc38a6ab | 1019 | |
f7c6a7b5 | 1020 | mr = uobj->object; |
bc38a6ab RD |
1021 | |
1022 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
1023 | if (!ret) |
1024 | uobj->live = 0; | |
1025 | ||
1026 | put_uobj_write(uobj); | |
1027 | ||
bc38a6ab | 1028 | if (ret) |
9ead190b | 1029 | return ret; |
bc38a6ab | 1030 | |
9ead190b | 1031 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 1032 | |
95ed644f | 1033 | mutex_lock(&file->mutex); |
9ead190b | 1034 | list_del(&uobj->list); |
95ed644f | 1035 | mutex_unlock(&file->mutex); |
bc38a6ab | 1036 | |
9ead190b | 1037 | put_uobj(uobj); |
bc38a6ab | 1038 | |
9ead190b | 1039 | return in_len; |
bc38a6ab RD |
1040 | } |
1041 | ||
6b52a12b SM |
1042 | ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file, |
1043 | const char __user *buf, int in_len, | |
1044 | int out_len) | |
1045 | { | |
1046 | struct ib_uverbs_alloc_mw cmd; | |
1047 | struct ib_uverbs_alloc_mw_resp resp; | |
1048 | struct ib_uobject *uobj; | |
1049 | struct ib_pd *pd; | |
1050 | struct ib_mw *mw; | |
1051 | int ret; | |
1052 | ||
1053 | if (out_len < sizeof(resp)) | |
1054 | return -ENOSPC; | |
1055 | ||
1056 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1057 | return -EFAULT; | |
1058 | ||
1059 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
1060 | if (!uobj) | |
1061 | return -ENOMEM; | |
1062 | ||
1063 | init_uobj(uobj, 0, file->ucontext, &mw_lock_class); | |
1064 | down_write(&uobj->mutex); | |
1065 | ||
1066 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1067 | if (!pd) { | |
1068 | ret = -EINVAL; | |
1069 | goto err_free; | |
1070 | } | |
1071 | ||
1072 | mw = pd->device->alloc_mw(pd, cmd.mw_type); | |
1073 | if (IS_ERR(mw)) { | |
1074 | ret = PTR_ERR(mw); | |
1075 | goto err_put; | |
1076 | } | |
1077 | ||
1078 | mw->device = pd->device; | |
1079 | mw->pd = pd; | |
1080 | mw->uobject = uobj; | |
1081 | atomic_inc(&pd->usecnt); | |
1082 | ||
1083 | uobj->object = mw; | |
1084 | ret = idr_add_uobj(&ib_uverbs_mw_idr, uobj); | |
1085 | if (ret) | |
1086 | goto err_unalloc; | |
1087 | ||
1088 | memset(&resp, 0, sizeof(resp)); | |
1089 | resp.rkey = mw->rkey; | |
1090 | resp.mw_handle = uobj->id; | |
1091 | ||
1092 | if (copy_to_user((void __user *)(unsigned long)cmd.response, | |
1093 | &resp, sizeof(resp))) { | |
1094 | ret = -EFAULT; | |
1095 | goto err_copy; | |
1096 | } | |
1097 | ||
1098 | put_pd_read(pd); | |
1099 | ||
1100 | mutex_lock(&file->mutex); | |
1101 | list_add_tail(&uobj->list, &file->ucontext->mw_list); | |
1102 | mutex_unlock(&file->mutex); | |
1103 | ||
1104 | uobj->live = 1; | |
1105 | ||
1106 | up_write(&uobj->mutex); | |
1107 | ||
1108 | return in_len; | |
1109 | ||
1110 | err_copy: | |
1111 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1112 | ||
1113 | err_unalloc: | |
1114 | ib_dealloc_mw(mw); | |
1115 | ||
1116 | err_put: | |
1117 | put_pd_read(pd); | |
1118 | ||
1119 | err_free: | |
1120 | put_uobj_write(uobj); | |
1121 | return ret; | |
1122 | } | |
1123 | ||
1124 | ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, | |
1125 | const char __user *buf, int in_len, | |
1126 | int out_len) | |
1127 | { | |
1128 | struct ib_uverbs_dealloc_mw cmd; | |
1129 | struct ib_mw *mw; | |
1130 | struct ib_uobject *uobj; | |
1131 | int ret = -EINVAL; | |
1132 | ||
1133 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1134 | return -EFAULT; | |
1135 | ||
1136 | uobj = idr_write_uobj(&ib_uverbs_mw_idr, cmd.mw_handle, file->ucontext); | |
1137 | if (!uobj) | |
1138 | return -EINVAL; | |
1139 | ||
1140 | mw = uobj->object; | |
1141 | ||
1142 | ret = ib_dealloc_mw(mw); | |
1143 | if (!ret) | |
1144 | uobj->live = 0; | |
1145 | ||
1146 | put_uobj_write(uobj); | |
1147 | ||
1148 | if (ret) | |
1149 | return ret; | |
1150 | ||
1151 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1152 | ||
1153 | mutex_lock(&file->mutex); | |
1154 | list_del(&uobj->list); | |
1155 | mutex_unlock(&file->mutex); | |
1156 | ||
1157 | put_uobj(uobj); | |
1158 | ||
1159 | return in_len; | |
1160 | } | |
1161 | ||
6b73597e RD |
1162 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
1163 | const char __user *buf, int in_len, | |
1164 | int out_len) | |
1165 | { | |
1166 | struct ib_uverbs_create_comp_channel cmd; | |
1167 | struct ib_uverbs_create_comp_channel_resp resp; | |
1168 | struct file *filp; | |
b1e4594b | 1169 | int ret; |
6b73597e RD |
1170 | |
1171 | if (out_len < sizeof resp) | |
1172 | return -ENOSPC; | |
1173 | ||
1174 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1175 | return -EFAULT; | |
1176 | ||
da183c7a | 1177 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
1178 | if (ret < 0) |
1179 | return ret; | |
1180 | resp.fd = ret; | |
1181 | ||
1182 | filp = ib_uverbs_alloc_event_file(file, 0); | |
1183 | if (IS_ERR(filp)) { | |
1184 | put_unused_fd(resp.fd); | |
6b73597e | 1185 | return PTR_ERR(filp); |
b1e4594b | 1186 | } |
6b73597e RD |
1187 | |
1188 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1189 | &resp, sizeof resp)) { | |
1190 | put_unused_fd(resp.fd); | |
1191 | fput(filp); | |
1192 | return -EFAULT; | |
1193 | } | |
1194 | ||
1195 | fd_install(resp.fd, filp); | |
1196 | return in_len; | |
1197 | } | |
1198 | ||
bc38a6ab RD |
1199 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
1200 | const char __user *buf, int in_len, | |
1201 | int out_len) | |
1202 | { | |
1203 | struct ib_uverbs_create_cq cmd; | |
1204 | struct ib_uverbs_create_cq_resp resp; | |
1205 | struct ib_udata udata; | |
9ead190b | 1206 | struct ib_ucq_object *obj; |
6b73597e | 1207 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
1208 | struct ib_cq *cq; |
1209 | int ret; | |
1210 | ||
1211 | if (out_len < sizeof resp) | |
1212 | return -ENOSPC; | |
1213 | ||
1214 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1215 | return -EFAULT; | |
1216 | ||
1217 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1218 | (unsigned long) cmd.response + sizeof resp, | |
1219 | in_len - sizeof cmd, out_len - sizeof resp); | |
1220 | ||
6b73597e | 1221 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
bc38a6ab RD |
1222 | return -EINVAL; |
1223 | ||
9ead190b RD |
1224 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1225 | if (!obj) | |
bc38a6ab RD |
1226 | return -ENOMEM; |
1227 | ||
3bea57a5 | 1228 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &cq_lock_class); |
9ead190b RD |
1229 | down_write(&obj->uobject.mutex); |
1230 | ||
ac4e7b35 JM |
1231 | if (cmd.comp_channel >= 0) { |
1232 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); | |
1233 | if (!ev_file) { | |
1234 | ret = -EINVAL; | |
1235 | goto err; | |
1236 | } | |
1237 | } | |
1238 | ||
9ead190b RD |
1239 | obj->uverbs_file = file; |
1240 | obj->comp_events_reported = 0; | |
1241 | obj->async_events_reported = 0; | |
1242 | INIT_LIST_HEAD(&obj->comp_list); | |
1243 | INIT_LIST_HEAD(&obj->async_list); | |
bc38a6ab RD |
1244 | |
1245 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, | |
f4fd0b22 | 1246 | cmd.comp_vector, |
bc38a6ab RD |
1247 | file->ucontext, &udata); |
1248 | if (IS_ERR(cq)) { | |
1249 | ret = PTR_ERR(cq); | |
9ead190b | 1250 | goto err_file; |
bc38a6ab RD |
1251 | } |
1252 | ||
1253 | cq->device = file->device->ib_dev; | |
9ead190b | 1254 | cq->uobject = &obj->uobject; |
bc38a6ab RD |
1255 | cq->comp_handler = ib_uverbs_comp_handler; |
1256 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 1257 | cq->cq_context = ev_file; |
bc38a6ab RD |
1258 | atomic_set(&cq->usecnt, 0); |
1259 | ||
9ead190b RD |
1260 | obj->uobject.object = cq; |
1261 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
bc38a6ab | 1262 | if (ret) |
9ead190b | 1263 | goto err_free; |
bc38a6ab RD |
1264 | |
1265 | memset(&resp, 0, sizeof resp); | |
9ead190b | 1266 | resp.cq_handle = obj->uobject.id; |
bc38a6ab RD |
1267 | resp.cqe = cq->cqe; |
1268 | ||
1269 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1270 | &resp, sizeof resp)) { | |
1271 | ret = -EFAULT; | |
9ead190b | 1272 | goto err_copy; |
bc38a6ab RD |
1273 | } |
1274 | ||
95ed644f | 1275 | mutex_lock(&file->mutex); |
9ead190b | 1276 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 1277 | mutex_unlock(&file->mutex); |
bc38a6ab | 1278 | |
9ead190b RD |
1279 | obj->uobject.live = 1; |
1280 | ||
1281 | up_write(&obj->uobject.mutex); | |
bc38a6ab | 1282 | |
eb9d3cd5 RD |
1283 | return in_len; |
1284 | ||
9ead190b RD |
1285 | err_copy: |
1286 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
eb9d3cd5 | 1287 | |
9ead190b | 1288 | err_free: |
bc38a6ab RD |
1289 | ib_destroy_cq(cq); |
1290 | ||
9ead190b | 1291 | err_file: |
ac4e7b35 | 1292 | if (ev_file) |
9ead190b RD |
1293 | ib_uverbs_release_ucq(file, ev_file, obj); |
1294 | ||
1295 | err: | |
1296 | put_uobj_write(&obj->uobject); | |
bc38a6ab RD |
1297 | return ret; |
1298 | } | |
1299 | ||
33b9b3ee RD |
1300 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
1301 | const char __user *buf, int in_len, | |
1302 | int out_len) | |
1303 | { | |
1304 | struct ib_uverbs_resize_cq cmd; | |
1305 | struct ib_uverbs_resize_cq_resp resp; | |
1306 | struct ib_udata udata; | |
1307 | struct ib_cq *cq; | |
1308 | int ret = -EINVAL; | |
1309 | ||
1310 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1311 | return -EFAULT; | |
1312 | ||
1313 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1314 | (unsigned long) cmd.response + sizeof resp, | |
1315 | in_len - sizeof cmd, out_len - sizeof resp); | |
1316 | ||
1ccf6aa1 | 1317 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
9ead190b RD |
1318 | if (!cq) |
1319 | return -EINVAL; | |
33b9b3ee RD |
1320 | |
1321 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
1322 | if (ret) | |
1323 | goto out; | |
1324 | ||
33b9b3ee RD |
1325 | resp.cqe = cq->cqe; |
1326 | ||
1327 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
64f817ba | 1328 | &resp, sizeof resp.cqe)) |
33b9b3ee RD |
1329 | ret = -EFAULT; |
1330 | ||
1331 | out: | |
9ead190b | 1332 | put_cq_read(cq); |
33b9b3ee RD |
1333 | |
1334 | return ret ? ret : in_len; | |
1335 | } | |
1336 | ||
7182afea DC |
1337 | static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) |
1338 | { | |
1339 | struct ib_uverbs_wc tmp; | |
1340 | ||
1341 | tmp.wr_id = wc->wr_id; | |
1342 | tmp.status = wc->status; | |
1343 | tmp.opcode = wc->opcode; | |
1344 | tmp.vendor_err = wc->vendor_err; | |
1345 | tmp.byte_len = wc->byte_len; | |
1346 | tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; | |
1347 | tmp.qp_num = wc->qp->qp_num; | |
1348 | tmp.src_qp = wc->src_qp; | |
1349 | tmp.wc_flags = wc->wc_flags; | |
1350 | tmp.pkey_index = wc->pkey_index; | |
1351 | tmp.slid = wc->slid; | |
1352 | tmp.sl = wc->sl; | |
1353 | tmp.dlid_path_bits = wc->dlid_path_bits; | |
1354 | tmp.port_num = wc->port_num; | |
1355 | tmp.reserved = 0; | |
1356 | ||
1357 | if (copy_to_user(dest, &tmp, sizeof tmp)) | |
1358 | return -EFAULT; | |
1359 | ||
1360 | return 0; | |
1361 | } | |
1362 | ||
67cdb40c RD |
1363 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
1364 | const char __user *buf, int in_len, | |
1365 | int out_len) | |
1366 | { | |
1367 | struct ib_uverbs_poll_cq cmd; | |
7182afea DC |
1368 | struct ib_uverbs_poll_cq_resp resp; |
1369 | u8 __user *header_ptr; | |
1370 | u8 __user *data_ptr; | |
67cdb40c | 1371 | struct ib_cq *cq; |
7182afea DC |
1372 | struct ib_wc wc; |
1373 | int ret; | |
67cdb40c RD |
1374 | |
1375 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1376 | return -EFAULT; | |
1377 | ||
1ccf6aa1 | 1378 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
7182afea DC |
1379 | if (!cq) |
1380 | return -EINVAL; | |
67cdb40c | 1381 | |
7182afea DC |
1382 | /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
1383 | header_ptr = (void __user *)(unsigned long) cmd.response; | |
1384 | data_ptr = header_ptr + sizeof resp; | |
9ead190b | 1385 | |
7182afea DC |
1386 | memset(&resp, 0, sizeof resp); |
1387 | while (resp.count < cmd.ne) { | |
1388 | ret = ib_poll_cq(cq, 1, &wc); | |
1389 | if (ret < 0) | |
1390 | goto out_put; | |
1391 | if (!ret) | |
1392 | break; | |
1393 | ||
1394 | ret = copy_wc_to_user(data_ptr, &wc); | |
1395 | if (ret) | |
1396 | goto out_put; | |
1397 | ||
1398 | data_ptr += sizeof(struct ib_uverbs_wc); | |
1399 | ++resp.count; | |
67cdb40c RD |
1400 | } |
1401 | ||
7182afea | 1402 | if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
67cdb40c | 1403 | ret = -EFAULT; |
7182afea DC |
1404 | goto out_put; |
1405 | } | |
67cdb40c | 1406 | |
7182afea | 1407 | ret = in_len; |
67cdb40c | 1408 | |
7182afea DC |
1409 | out_put: |
1410 | put_cq_read(cq); | |
1411 | return ret; | |
67cdb40c RD |
1412 | } |
1413 | ||
1414 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
1415 | const char __user *buf, int in_len, | |
1416 | int out_len) | |
1417 | { | |
1418 | struct ib_uverbs_req_notify_cq cmd; | |
1419 | struct ib_cq *cq; | |
67cdb40c RD |
1420 | |
1421 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1422 | return -EFAULT; | |
1423 | ||
1ccf6aa1 | 1424 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 1425 | if (!cq) |
9ead190b | 1426 | return -EINVAL; |
67cdb40c | 1427 | |
9ead190b RD |
1428 | ib_req_notify_cq(cq, cmd.solicited_only ? |
1429 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
1430 | ||
ab108676 | 1431 | put_cq_read(cq); |
9ead190b RD |
1432 | |
1433 | return in_len; | |
67cdb40c RD |
1434 | } |
1435 | ||
bc38a6ab RD |
1436 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
1437 | const char __user *buf, int in_len, | |
1438 | int out_len) | |
1439 | { | |
63aaf647 RD |
1440 | struct ib_uverbs_destroy_cq cmd; |
1441 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 1442 | struct ib_uobject *uobj; |
63aaf647 | 1443 | struct ib_cq *cq; |
9ead190b | 1444 | struct ib_ucq_object *obj; |
6b73597e | 1445 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 1446 | int ret = -EINVAL; |
bc38a6ab RD |
1447 | |
1448 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1449 | return -EFAULT; | |
1450 | ||
9ead190b RD |
1451 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
1452 | if (!uobj) | |
1453 | return -EINVAL; | |
1454 | cq = uobj->object; | |
1455 | ev_file = cq->cq_context; | |
1456 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 1457 | |
9ead190b RD |
1458 | ret = ib_destroy_cq(cq); |
1459 | if (!ret) | |
1460 | uobj->live = 0; | |
bc38a6ab | 1461 | |
9ead190b | 1462 | put_uobj_write(uobj); |
bc38a6ab | 1463 | |
bc38a6ab | 1464 | if (ret) |
9ead190b | 1465 | return ret; |
bc38a6ab | 1466 | |
9ead190b | 1467 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 1468 | |
95ed644f | 1469 | mutex_lock(&file->mutex); |
9ead190b | 1470 | list_del(&uobj->list); |
95ed644f | 1471 | mutex_unlock(&file->mutex); |
bc38a6ab | 1472 | |
9ead190b | 1473 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1474 | |
9ead190b RD |
1475 | memset(&resp, 0, sizeof resp); |
1476 | resp.comp_events_reported = obj->comp_events_reported; | |
1477 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1478 | |
9ead190b | 1479 | put_uobj(uobj); |
bc38a6ab | 1480 | |
63aaf647 RD |
1481 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1482 | &resp, sizeof resp)) | |
9ead190b | 1483 | return -EFAULT; |
bc38a6ab | 1484 | |
9ead190b | 1485 | return in_len; |
bc38a6ab RD |
1486 | } |
1487 | ||
1488 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
1489 | const char __user *buf, int in_len, | |
1490 | int out_len) | |
1491 | { | |
1492 | struct ib_uverbs_create_qp cmd; | |
1493 | struct ib_uverbs_create_qp_resp resp; | |
1494 | struct ib_udata udata; | |
9ead190b | 1495 | struct ib_uqp_object *obj; |
b93f3c18 SH |
1496 | struct ib_device *device; |
1497 | struct ib_pd *pd = NULL; | |
1498 | struct ib_xrcd *xrcd = NULL; | |
1499 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1500 | struct ib_cq *scq = NULL, *rcq = NULL; | |
9977f4f6 | 1501 | struct ib_srq *srq = NULL; |
bc38a6ab RD |
1502 | struct ib_qp *qp; |
1503 | struct ib_qp_init_attr attr; | |
1504 | int ret; | |
1505 | ||
1506 | if (out_len < sizeof resp) | |
1507 | return -ENOSPC; | |
1508 | ||
1509 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1510 | return -EFAULT; | |
1511 | ||
c938a616 OG |
1512 | if (cmd.qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) |
1513 | return -EPERM; | |
1514 | ||
bc38a6ab RD |
1515 | INIT_UDATA(&udata, buf + sizeof cmd, |
1516 | (unsigned long) cmd.response + sizeof resp, | |
1517 | in_len - sizeof cmd, out_len - sizeof resp); | |
1518 | ||
846be90d | 1519 | obj = kzalloc(sizeof *obj, GFP_KERNEL); |
9ead190b | 1520 | if (!obj) |
bc38a6ab RD |
1521 | return -ENOMEM; |
1522 | ||
3bea57a5 | 1523 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
9ead190b | 1524 | down_write(&obj->uevent.uobject.mutex); |
bc38a6ab | 1525 | |
b93f3c18 SH |
1526 | if (cmd.qp_type == IB_QPT_XRC_TGT) { |
1527 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
1528 | if (!xrcd) { | |
1529 | ret = -EINVAL; | |
1530 | goto err_put; | |
1531 | } | |
1532 | device = xrcd->device; | |
9977f4f6 | 1533 | } else { |
b93f3c18 SH |
1534 | if (cmd.qp_type == IB_QPT_XRC_INI) { |
1535 | cmd.max_recv_wr = cmd.max_recv_sge = 0; | |
1536 | } else { | |
1537 | if (cmd.is_srq) { | |
1538 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); | |
1539 | if (!srq || srq->srq_type != IB_SRQT_BASIC) { | |
1540 | ret = -EINVAL; | |
1541 | goto err_put; | |
1542 | } | |
1543 | } | |
5909ce54 RD |
1544 | |
1545 | if (cmd.recv_cq_handle != cmd.send_cq_handle) { | |
1546 | rcq = idr_read_cq(cmd.recv_cq_handle, file->ucontext, 0); | |
1547 | if (!rcq) { | |
1548 | ret = -EINVAL; | |
1549 | goto err_put; | |
1550 | } | |
9977f4f6 SH |
1551 | } |
1552 | } | |
5909ce54 RD |
1553 | |
1554 | scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, !!rcq); | |
1555 | rcq = rcq ?: scq; | |
1556 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1557 | if (!pd || !scq) { | |
1558 | ret = -EINVAL; | |
1559 | goto err_put; | |
1560 | } | |
1561 | ||
b93f3c18 | 1562 | device = pd->device; |
9977f4f6 SH |
1563 | } |
1564 | ||
bc38a6ab RD |
1565 | attr.event_handler = ib_uverbs_qp_event_handler; |
1566 | attr.qp_context = file; | |
1567 | attr.send_cq = scq; | |
1568 | attr.recv_cq = rcq; | |
f520ba5a | 1569 | attr.srq = srq; |
b93f3c18 | 1570 | attr.xrcd = xrcd; |
bc38a6ab RD |
1571 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
1572 | attr.qp_type = cmd.qp_type; | |
b846f25a | 1573 | attr.create_flags = 0; |
bc38a6ab RD |
1574 | |
1575 | attr.cap.max_send_wr = cmd.max_send_wr; | |
1576 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
1577 | attr.cap.max_send_sge = cmd.max_send_sge; | |
1578 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
1579 | attr.cap.max_inline_data = cmd.max_inline_data; | |
1580 | ||
9ead190b RD |
1581 | obj->uevent.events_reported = 0; |
1582 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1583 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab | 1584 | |
b93f3c18 SH |
1585 | if (cmd.qp_type == IB_QPT_XRC_TGT) |
1586 | qp = ib_create_qp(pd, &attr); | |
1587 | else | |
1588 | qp = device->create_qp(pd, &attr, &udata); | |
1589 | ||
bc38a6ab RD |
1590 | if (IS_ERR(qp)) { |
1591 | ret = PTR_ERR(qp); | |
9ead190b | 1592 | goto err_put; |
bc38a6ab RD |
1593 | } |
1594 | ||
b93f3c18 | 1595 | if (cmd.qp_type != IB_QPT_XRC_TGT) { |
0e0ec7e0 | 1596 | qp->real_qp = qp; |
b93f3c18 SH |
1597 | qp->device = device; |
1598 | qp->pd = pd; | |
1599 | qp->send_cq = attr.send_cq; | |
1600 | qp->recv_cq = attr.recv_cq; | |
1601 | qp->srq = attr.srq; | |
1602 | qp->event_handler = attr.event_handler; | |
1603 | qp->qp_context = attr.qp_context; | |
1604 | qp->qp_type = attr.qp_type; | |
e47e321a | 1605 | atomic_set(&qp->usecnt, 0); |
b93f3c18 SH |
1606 | atomic_inc(&pd->usecnt); |
1607 | atomic_inc(&attr.send_cq->usecnt); | |
1608 | if (attr.recv_cq) | |
1609 | atomic_inc(&attr.recv_cq->usecnt); | |
1610 | if (attr.srq) | |
1611 | atomic_inc(&attr.srq->usecnt); | |
1612 | } | |
1613 | qp->uobject = &obj->uevent.uobject; | |
bc38a6ab | 1614 | |
9ead190b RD |
1615 | obj->uevent.uobject.object = qp; |
1616 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1617 | if (ret) |
1618 | goto err_destroy; | |
1619 | ||
9ead190b RD |
1620 | memset(&resp, 0, sizeof resp); |
1621 | resp.qpn = qp->qp_num; | |
1622 | resp.qp_handle = obj->uevent.uobject.id; | |
77369ed3 JM |
1623 | resp.max_recv_sge = attr.cap.max_recv_sge; |
1624 | resp.max_send_sge = attr.cap.max_send_sge; | |
1625 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
1626 | resp.max_send_wr = attr.cap.max_send_wr; | |
1627 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1628 | |
bc38a6ab RD |
1629 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1630 | &resp, sizeof resp)) { | |
1631 | ret = -EFAULT; | |
9ead190b | 1632 | goto err_copy; |
bc38a6ab RD |
1633 | } |
1634 | ||
846be90d YH |
1635 | if (xrcd) { |
1636 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, | |
1637 | uobject); | |
1638 | atomic_inc(&obj->uxrcd->refcnt); | |
b93f3c18 | 1639 | put_xrcd_read(xrcd_uobj); |
846be90d YH |
1640 | } |
1641 | ||
b93f3c18 SH |
1642 | if (pd) |
1643 | put_pd_read(pd); | |
1644 | if (scq) | |
1645 | put_cq_read(scq); | |
9977f4f6 | 1646 | if (rcq && rcq != scq) |
43db2bc0 | 1647 | put_cq_read(rcq); |
9ead190b RD |
1648 | if (srq) |
1649 | put_srq_read(srq); | |
1650 | ||
95ed644f | 1651 | mutex_lock(&file->mutex); |
9ead190b | 1652 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1653 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1654 | |
9ead190b RD |
1655 | obj->uevent.uobject.live = 1; |
1656 | ||
1657 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab RD |
1658 | |
1659 | return in_len; | |
1660 | ||
9ead190b RD |
1661 | err_copy: |
1662 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1663 | |
1664 | err_destroy: | |
1665 | ib_destroy_qp(qp); | |
1666 | ||
9ead190b | 1667 | err_put: |
b93f3c18 SH |
1668 | if (xrcd) |
1669 | put_xrcd_read(xrcd_uobj); | |
9ead190b RD |
1670 | if (pd) |
1671 | put_pd_read(pd); | |
1672 | if (scq) | |
1673 | put_cq_read(scq); | |
43db2bc0 | 1674 | if (rcq && rcq != scq) |
9ead190b RD |
1675 | put_cq_read(rcq); |
1676 | if (srq) | |
1677 | put_srq_read(srq); | |
1678 | ||
1679 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
1680 | return ret; |
1681 | } | |
1682 | ||
42849b26 SH |
1683 | ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, |
1684 | const char __user *buf, int in_len, int out_len) | |
1685 | { | |
1686 | struct ib_uverbs_open_qp cmd; | |
1687 | struct ib_uverbs_create_qp_resp resp; | |
1688 | struct ib_udata udata; | |
1689 | struct ib_uqp_object *obj; | |
1690 | struct ib_xrcd *xrcd; | |
1691 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1692 | struct ib_qp *qp; | |
1693 | struct ib_qp_open_attr attr; | |
1694 | int ret; | |
1695 | ||
1696 | if (out_len < sizeof resp) | |
1697 | return -ENOSPC; | |
1698 | ||
1699 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1700 | return -EFAULT; | |
1701 | ||
1702 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1703 | (unsigned long) cmd.response + sizeof resp, | |
1704 | in_len - sizeof cmd, out_len - sizeof resp); | |
1705 | ||
1706 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
1707 | if (!obj) | |
1708 | return -ENOMEM; | |
1709 | ||
3bea57a5 | 1710 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
42849b26 SH |
1711 | down_write(&obj->uevent.uobject.mutex); |
1712 | ||
1713 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
1714 | if (!xrcd) { | |
1715 | ret = -EINVAL; | |
1716 | goto err_put; | |
1717 | } | |
1718 | ||
1719 | attr.event_handler = ib_uverbs_qp_event_handler; | |
1720 | attr.qp_context = file; | |
1721 | attr.qp_num = cmd.qpn; | |
1722 | attr.qp_type = cmd.qp_type; | |
1723 | ||
1724 | obj->uevent.events_reported = 0; | |
1725 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1726 | INIT_LIST_HEAD(&obj->mcast_list); | |
1727 | ||
1728 | qp = ib_open_qp(xrcd, &attr); | |
1729 | if (IS_ERR(qp)) { | |
1730 | ret = PTR_ERR(qp); | |
1731 | goto err_put; | |
1732 | } | |
1733 | ||
1734 | qp->uobject = &obj->uevent.uobject; | |
1735 | ||
1736 | obj->uevent.uobject.object = qp; | |
1737 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
1738 | if (ret) | |
1739 | goto err_destroy; | |
1740 | ||
1741 | memset(&resp, 0, sizeof resp); | |
1742 | resp.qpn = qp->qp_num; | |
1743 | resp.qp_handle = obj->uevent.uobject.id; | |
1744 | ||
1745 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1746 | &resp, sizeof resp)) { | |
1747 | ret = -EFAULT; | |
1748 | goto err_remove; | |
1749 | } | |
1750 | ||
846be90d YH |
1751 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); |
1752 | atomic_inc(&obj->uxrcd->refcnt); | |
42849b26 SH |
1753 | put_xrcd_read(xrcd_uobj); |
1754 | ||
1755 | mutex_lock(&file->mutex); | |
1756 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); | |
1757 | mutex_unlock(&file->mutex); | |
1758 | ||
1759 | obj->uevent.uobject.live = 1; | |
1760 | ||
1761 | up_write(&obj->uevent.uobject.mutex); | |
1762 | ||
1763 | return in_len; | |
1764 | ||
1765 | err_remove: | |
1766 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
1767 | ||
1768 | err_destroy: | |
1769 | ib_destroy_qp(qp); | |
1770 | ||
1771 | err_put: | |
1772 | put_xrcd_read(xrcd_uobj); | |
1773 | put_uobj_write(&obj->uevent.uobject); | |
1774 | return ret; | |
1775 | } | |
1776 | ||
7ccc9a24 DB |
1777 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
1778 | const char __user *buf, int in_len, | |
1779 | int out_len) | |
1780 | { | |
1781 | struct ib_uverbs_query_qp cmd; | |
1782 | struct ib_uverbs_query_qp_resp resp; | |
1783 | struct ib_qp *qp; | |
1784 | struct ib_qp_attr *attr; | |
1785 | struct ib_qp_init_attr *init_attr; | |
1786 | int ret; | |
1787 | ||
1788 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1789 | return -EFAULT; | |
1790 | ||
1791 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1792 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
1793 | if (!attr || !init_attr) { | |
1794 | ret = -ENOMEM; | |
1795 | goto out; | |
1796 | } | |
1797 | ||
9ead190b RD |
1798 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1799 | if (!qp) { | |
7ccc9a24 | 1800 | ret = -EINVAL; |
9ead190b RD |
1801 | goto out; |
1802 | } | |
1803 | ||
1804 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 1805 | |
9ead190b | 1806 | put_qp_read(qp); |
7ccc9a24 DB |
1807 | |
1808 | if (ret) | |
1809 | goto out; | |
1810 | ||
1811 | memset(&resp, 0, sizeof resp); | |
1812 | ||
1813 | resp.qp_state = attr->qp_state; | |
1814 | resp.cur_qp_state = attr->cur_qp_state; | |
1815 | resp.path_mtu = attr->path_mtu; | |
1816 | resp.path_mig_state = attr->path_mig_state; | |
1817 | resp.qkey = attr->qkey; | |
1818 | resp.rq_psn = attr->rq_psn; | |
1819 | resp.sq_psn = attr->sq_psn; | |
1820 | resp.dest_qp_num = attr->dest_qp_num; | |
1821 | resp.qp_access_flags = attr->qp_access_flags; | |
1822 | resp.pkey_index = attr->pkey_index; | |
1823 | resp.alt_pkey_index = attr->alt_pkey_index; | |
0b26c88f | 1824 | resp.sq_draining = attr->sq_draining; |
7ccc9a24 DB |
1825 | resp.max_rd_atomic = attr->max_rd_atomic; |
1826 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1827 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1828 | resp.port_num = attr->port_num; | |
1829 | resp.timeout = attr->timeout; | |
1830 | resp.retry_cnt = attr->retry_cnt; | |
1831 | resp.rnr_retry = attr->rnr_retry; | |
1832 | resp.alt_port_num = attr->alt_port_num; | |
1833 | resp.alt_timeout = attr->alt_timeout; | |
1834 | ||
1835 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1836 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1837 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1838 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1839 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1840 | resp.dest.dlid = attr->ah_attr.dlid; | |
1841 | resp.dest.sl = attr->ah_attr.sl; | |
1842 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1843 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1844 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1845 | resp.dest.port_num = attr->ah_attr.port_num; | |
1846 | ||
1847 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1848 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1849 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1850 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1851 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1852 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1853 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1854 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1855 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1856 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1857 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1858 | ||
1859 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1860 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1861 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1862 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1863 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1864 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1865 | |
1866 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1867 | &resp, sizeof resp)) | |
1868 | ret = -EFAULT; | |
1869 | ||
1870 | out: | |
1871 | kfree(attr); | |
1872 | kfree(init_attr); | |
1873 | ||
1874 | return ret ? ret : in_len; | |
1875 | } | |
1876 | ||
9977f4f6 SH |
1877 | /* Remove ignored fields set in the attribute mask */ |
1878 | static int modify_qp_mask(enum ib_qp_type qp_type, int mask) | |
1879 | { | |
1880 | switch (qp_type) { | |
1881 | case IB_QPT_XRC_INI: | |
1882 | return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); | |
b93f3c18 SH |
1883 | case IB_QPT_XRC_TGT: |
1884 | return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | | |
1885 | IB_QP_RNR_RETRY); | |
9977f4f6 SH |
1886 | default: |
1887 | return mask; | |
1888 | } | |
1889 | } | |
1890 | ||
bc38a6ab RD |
1891 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1892 | const char __user *buf, int in_len, | |
1893 | int out_len) | |
1894 | { | |
1895 | struct ib_uverbs_modify_qp cmd; | |
9bc57e2d | 1896 | struct ib_udata udata; |
bc38a6ab RD |
1897 | struct ib_qp *qp; |
1898 | struct ib_qp_attr *attr; | |
1899 | int ret; | |
1900 | ||
1901 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1902 | return -EFAULT; | |
1903 | ||
9bc57e2d RC |
1904 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
1905 | out_len); | |
1906 | ||
bc38a6ab RD |
1907 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
1908 | if (!attr) | |
1909 | return -ENOMEM; | |
1910 | ||
9ead190b RD |
1911 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1912 | if (!qp) { | |
bc38a6ab RD |
1913 | ret = -EINVAL; |
1914 | goto out; | |
1915 | } | |
1916 | ||
1917 | attr->qp_state = cmd.qp_state; | |
1918 | attr->cur_qp_state = cmd.cur_qp_state; | |
1919 | attr->path_mtu = cmd.path_mtu; | |
1920 | attr->path_mig_state = cmd.path_mig_state; | |
1921 | attr->qkey = cmd.qkey; | |
1922 | attr->rq_psn = cmd.rq_psn; | |
1923 | attr->sq_psn = cmd.sq_psn; | |
1924 | attr->dest_qp_num = cmd.dest_qp_num; | |
1925 | attr->qp_access_flags = cmd.qp_access_flags; | |
1926 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1927 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1928 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1929 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1930 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1931 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1932 | attr->port_num = cmd.port_num; | |
1933 | attr->timeout = cmd.timeout; | |
1934 | attr->retry_cnt = cmd.retry_cnt; | |
1935 | attr->rnr_retry = cmd.rnr_retry; | |
1936 | attr->alt_port_num = cmd.alt_port_num; | |
1937 | attr->alt_timeout = cmd.alt_timeout; | |
1938 | ||
1939 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1940 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1941 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1942 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1943 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1944 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1945 | attr->ah_attr.sl = cmd.dest.sl; | |
1946 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1947 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1948 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1949 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1950 | ||
1951 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1952 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1953 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1954 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1955 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1956 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1957 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1958 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1959 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1960 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1961 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1962 | ||
0e0ec7e0 SH |
1963 | if (qp->real_qp == qp) { |
1964 | ret = qp->device->modify_qp(qp, attr, | |
1965 | modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata); | |
1966 | } else { | |
1967 | ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask)); | |
1968 | } | |
9ead190b RD |
1969 | |
1970 | put_qp_read(qp); | |
1971 | ||
bc38a6ab RD |
1972 | if (ret) |
1973 | goto out; | |
1974 | ||
1975 | ret = in_len; | |
1976 | ||
1977 | out: | |
bc38a6ab RD |
1978 | kfree(attr); |
1979 | ||
1980 | return ret; | |
1981 | } | |
1982 | ||
1983 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1984 | const char __user *buf, int in_len, | |
1985 | int out_len) | |
1986 | { | |
63aaf647 RD |
1987 | struct ib_uverbs_destroy_qp cmd; |
1988 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 1989 | struct ib_uobject *uobj; |
63aaf647 | 1990 | struct ib_qp *qp; |
9ead190b | 1991 | struct ib_uqp_object *obj; |
63aaf647 | 1992 | int ret = -EINVAL; |
bc38a6ab RD |
1993 | |
1994 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1995 | return -EFAULT; | |
1996 | ||
63aaf647 RD |
1997 | memset(&resp, 0, sizeof resp); |
1998 | ||
9ead190b RD |
1999 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
2000 | if (!uobj) | |
2001 | return -EINVAL; | |
2002 | qp = uobj->object; | |
2003 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 2004 | |
9ead190b RD |
2005 | if (!list_empty(&obj->mcast_list)) { |
2006 | put_uobj_write(uobj); | |
2007 | return -EBUSY; | |
f4e40156 | 2008 | } |
bc38a6ab RD |
2009 | |
2010 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
2011 | if (!ret) |
2012 | uobj->live = 0; | |
2013 | ||
2014 | put_uobj_write(uobj); | |
2015 | ||
bc38a6ab | 2016 | if (ret) |
9ead190b | 2017 | return ret; |
bc38a6ab | 2018 | |
846be90d YH |
2019 | if (obj->uxrcd) |
2020 | atomic_dec(&obj->uxrcd->refcnt); | |
2021 | ||
9ead190b | 2022 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 2023 | |
95ed644f | 2024 | mutex_lock(&file->mutex); |
9ead190b | 2025 | list_del(&uobj->list); |
95ed644f | 2026 | mutex_unlock(&file->mutex); |
bc38a6ab | 2027 | |
9ead190b | 2028 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 2029 | |
9ead190b | 2030 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 2031 | |
9ead190b | 2032 | put_uobj(uobj); |
bc38a6ab | 2033 | |
63aaf647 RD |
2034 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2035 | &resp, sizeof resp)) | |
9ead190b | 2036 | return -EFAULT; |
bc38a6ab | 2037 | |
9ead190b | 2038 | return in_len; |
bc38a6ab RD |
2039 | } |
2040 | ||
67cdb40c | 2041 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
2042 | const char __user *buf, int in_len, |
2043 | int out_len) | |
67cdb40c RD |
2044 | { |
2045 | struct ib_uverbs_post_send cmd; | |
2046 | struct ib_uverbs_post_send_resp resp; | |
2047 | struct ib_uverbs_send_wr *user_wr; | |
2048 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
2049 | struct ib_qp *qp; | |
2050 | int i, sg_ind; | |
9ead190b | 2051 | int is_ud; |
67cdb40c RD |
2052 | ssize_t ret = -EINVAL; |
2053 | ||
2054 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2055 | return -EFAULT; | |
2056 | ||
2057 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
2058 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
2059 | return -EINVAL; | |
2060 | ||
2061 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
2062 | return -EINVAL; | |
2063 | ||
2064 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
2065 | if (!user_wr) | |
2066 | return -ENOMEM; | |
2067 | ||
9ead190b RD |
2068 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2069 | if (!qp) | |
67cdb40c RD |
2070 | goto out; |
2071 | ||
9ead190b | 2072 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
2073 | sg_ind = 0; |
2074 | last = NULL; | |
2075 | for (i = 0; i < cmd.wr_count; ++i) { | |
2076 | if (copy_from_user(user_wr, | |
2077 | buf + sizeof cmd + i * cmd.wqe_size, | |
2078 | cmd.wqe_size)) { | |
2079 | ret = -EFAULT; | |
9ead190b | 2080 | goto out_put; |
67cdb40c RD |
2081 | } |
2082 | ||
2083 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
2084 | ret = -EINVAL; | |
9ead190b | 2085 | goto out_put; |
67cdb40c RD |
2086 | } |
2087 | ||
2088 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
2089 | user_wr->num_sge * sizeof (struct ib_sge), | |
2090 | GFP_KERNEL); | |
2091 | if (!next) { | |
2092 | ret = -ENOMEM; | |
9ead190b | 2093 | goto out_put; |
67cdb40c RD |
2094 | } |
2095 | ||
2096 | if (!last) | |
2097 | wr = next; | |
2098 | else | |
2099 | last->next = next; | |
2100 | last = next; | |
2101 | ||
2102 | next->next = NULL; | |
2103 | next->wr_id = user_wr->wr_id; | |
2104 | next->num_sge = user_wr->num_sge; | |
2105 | next->opcode = user_wr->opcode; | |
2106 | next->send_flags = user_wr->send_flags; | |
67cdb40c | 2107 | |
9ead190b RD |
2108 | if (is_ud) { |
2109 | next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, | |
2110 | file->ucontext); | |
67cdb40c RD |
2111 | if (!next->wr.ud.ah) { |
2112 | ret = -EINVAL; | |
9ead190b | 2113 | goto out_put; |
67cdb40c RD |
2114 | } |
2115 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
2116 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
6b7d103c LI |
2117 | if (next->opcode == IB_WR_SEND_WITH_IMM) |
2118 | next->ex.imm_data = | |
2119 | (__be32 __force) user_wr->ex.imm_data; | |
67cdb40c RD |
2120 | } else { |
2121 | switch (next->opcode) { | |
67cdb40c | 2122 | case IB_WR_RDMA_WRITE_WITH_IMM: |
0f39cf3d RD |
2123 | next->ex.imm_data = |
2124 | (__be32 __force) user_wr->ex.imm_data; | |
2125 | case IB_WR_RDMA_WRITE: | |
67cdb40c RD |
2126 | case IB_WR_RDMA_READ: |
2127 | next->wr.rdma.remote_addr = | |
2128 | user_wr->wr.rdma.remote_addr; | |
2129 | next->wr.rdma.rkey = | |
2130 | user_wr->wr.rdma.rkey; | |
2131 | break; | |
0f39cf3d RD |
2132 | case IB_WR_SEND_WITH_IMM: |
2133 | next->ex.imm_data = | |
2134 | (__be32 __force) user_wr->ex.imm_data; | |
2135 | break; | |
2136 | case IB_WR_SEND_WITH_INV: | |
2137 | next->ex.invalidate_rkey = | |
2138 | user_wr->ex.invalidate_rkey; | |
2139 | break; | |
67cdb40c RD |
2140 | case IB_WR_ATOMIC_CMP_AND_SWP: |
2141 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
2142 | next->wr.atomic.remote_addr = | |
2143 | user_wr->wr.atomic.remote_addr; | |
2144 | next->wr.atomic.compare_add = | |
2145 | user_wr->wr.atomic.compare_add; | |
2146 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
2147 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
2148 | break; | |
2149 | default: | |
2150 | break; | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | if (next->num_sge) { | |
2155 | next->sg_list = (void *) next + | |
2156 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2157 | if (copy_from_user(next->sg_list, | |
2158 | buf + sizeof cmd + | |
2159 | cmd.wr_count * cmd.wqe_size + | |
2160 | sg_ind * sizeof (struct ib_sge), | |
2161 | next->num_sge * sizeof (struct ib_sge))) { | |
2162 | ret = -EFAULT; | |
9ead190b | 2163 | goto out_put; |
67cdb40c RD |
2164 | } |
2165 | sg_ind += next->num_sge; | |
2166 | } else | |
2167 | next->sg_list = NULL; | |
2168 | } | |
2169 | ||
2170 | resp.bad_wr = 0; | |
0e0ec7e0 | 2171 | ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); |
67cdb40c RD |
2172 | if (ret) |
2173 | for (next = wr; next; next = next->next) { | |
2174 | ++resp.bad_wr; | |
2175 | if (next == bad_wr) | |
2176 | break; | |
2177 | } | |
2178 | ||
2179 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2180 | &resp, sizeof resp)) | |
2181 | ret = -EFAULT; | |
2182 | ||
9ead190b RD |
2183 | out_put: |
2184 | put_qp_read(qp); | |
67cdb40c RD |
2185 | |
2186 | while (wr) { | |
9ead190b RD |
2187 | if (is_ud && wr->wr.ud.ah) |
2188 | put_ah_read(wr->wr.ud.ah); | |
67cdb40c RD |
2189 | next = wr->next; |
2190 | kfree(wr); | |
2191 | wr = next; | |
2192 | } | |
2193 | ||
18320828 | 2194 | out: |
67cdb40c RD |
2195 | kfree(user_wr); |
2196 | ||
2197 | return ret ? ret : in_len; | |
2198 | } | |
2199 | ||
2200 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
2201 | int in_len, | |
2202 | u32 wr_count, | |
2203 | u32 sge_count, | |
2204 | u32 wqe_size) | |
2205 | { | |
2206 | struct ib_uverbs_recv_wr *user_wr; | |
2207 | struct ib_recv_wr *wr = NULL, *last, *next; | |
2208 | int sg_ind; | |
2209 | int i; | |
2210 | int ret; | |
2211 | ||
2212 | if (in_len < wqe_size * wr_count + | |
2213 | sge_count * sizeof (struct ib_uverbs_sge)) | |
2214 | return ERR_PTR(-EINVAL); | |
2215 | ||
2216 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
2217 | return ERR_PTR(-EINVAL); | |
2218 | ||
2219 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
2220 | if (!user_wr) | |
2221 | return ERR_PTR(-ENOMEM); | |
2222 | ||
2223 | sg_ind = 0; | |
2224 | last = NULL; | |
2225 | for (i = 0; i < wr_count; ++i) { | |
2226 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
2227 | wqe_size)) { | |
2228 | ret = -EFAULT; | |
2229 | goto err; | |
2230 | } | |
2231 | ||
2232 | if (user_wr->num_sge + sg_ind > sge_count) { | |
2233 | ret = -EINVAL; | |
2234 | goto err; | |
2235 | } | |
2236 | ||
2237 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
2238 | user_wr->num_sge * sizeof (struct ib_sge), | |
2239 | GFP_KERNEL); | |
2240 | if (!next) { | |
2241 | ret = -ENOMEM; | |
2242 | goto err; | |
2243 | } | |
2244 | ||
2245 | if (!last) | |
2246 | wr = next; | |
2247 | else | |
2248 | last->next = next; | |
2249 | last = next; | |
2250 | ||
2251 | next->next = NULL; | |
2252 | next->wr_id = user_wr->wr_id; | |
2253 | next->num_sge = user_wr->num_sge; | |
2254 | ||
2255 | if (next->num_sge) { | |
2256 | next->sg_list = (void *) next + | |
2257 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2258 | if (copy_from_user(next->sg_list, | |
2259 | buf + wr_count * wqe_size + | |
2260 | sg_ind * sizeof (struct ib_sge), | |
2261 | next->num_sge * sizeof (struct ib_sge))) { | |
2262 | ret = -EFAULT; | |
2263 | goto err; | |
2264 | } | |
2265 | sg_ind += next->num_sge; | |
2266 | } else | |
2267 | next->sg_list = NULL; | |
2268 | } | |
2269 | ||
2270 | kfree(user_wr); | |
2271 | return wr; | |
2272 | ||
2273 | err: | |
2274 | kfree(user_wr); | |
2275 | ||
2276 | while (wr) { | |
2277 | next = wr->next; | |
2278 | kfree(wr); | |
2279 | wr = next; | |
2280 | } | |
2281 | ||
2282 | return ERR_PTR(ret); | |
2283 | } | |
2284 | ||
2285 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
2286 | const char __user *buf, int in_len, |
2287 | int out_len) | |
67cdb40c RD |
2288 | { |
2289 | struct ib_uverbs_post_recv cmd; | |
2290 | struct ib_uverbs_post_recv_resp resp; | |
2291 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2292 | struct ib_qp *qp; | |
2293 | ssize_t ret = -EINVAL; | |
2294 | ||
2295 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2296 | return -EFAULT; | |
2297 | ||
2298 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2299 | in_len - sizeof cmd, cmd.wr_count, | |
2300 | cmd.sge_count, cmd.wqe_size); | |
2301 | if (IS_ERR(wr)) | |
2302 | return PTR_ERR(wr); | |
2303 | ||
9ead190b RD |
2304 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2305 | if (!qp) | |
67cdb40c RD |
2306 | goto out; |
2307 | ||
2308 | resp.bad_wr = 0; | |
0e0ec7e0 | 2309 | ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); |
9ead190b RD |
2310 | |
2311 | put_qp_read(qp); | |
2312 | ||
67cdb40c RD |
2313 | if (ret) |
2314 | for (next = wr; next; next = next->next) { | |
2315 | ++resp.bad_wr; | |
2316 | if (next == bad_wr) | |
2317 | break; | |
2318 | } | |
2319 | ||
67cdb40c RD |
2320 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2321 | &resp, sizeof resp)) | |
2322 | ret = -EFAULT; | |
2323 | ||
2324 | out: | |
67cdb40c RD |
2325 | while (wr) { |
2326 | next = wr->next; | |
2327 | kfree(wr); | |
2328 | wr = next; | |
2329 | } | |
2330 | ||
2331 | return ret ? ret : in_len; | |
2332 | } | |
2333 | ||
2334 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
2335 | const char __user *buf, int in_len, |
2336 | int out_len) | |
67cdb40c RD |
2337 | { |
2338 | struct ib_uverbs_post_srq_recv cmd; | |
2339 | struct ib_uverbs_post_srq_recv_resp resp; | |
2340 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2341 | struct ib_srq *srq; | |
2342 | ssize_t ret = -EINVAL; | |
2343 | ||
2344 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2345 | return -EFAULT; | |
2346 | ||
2347 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2348 | in_len - sizeof cmd, cmd.wr_count, | |
2349 | cmd.sge_count, cmd.wqe_size); | |
2350 | if (IS_ERR(wr)) | |
2351 | return PTR_ERR(wr); | |
2352 | ||
9ead190b RD |
2353 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2354 | if (!srq) | |
67cdb40c RD |
2355 | goto out; |
2356 | ||
2357 | resp.bad_wr = 0; | |
2358 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
2359 | |
2360 | put_srq_read(srq); | |
2361 | ||
67cdb40c RD |
2362 | if (ret) |
2363 | for (next = wr; next; next = next->next) { | |
2364 | ++resp.bad_wr; | |
2365 | if (next == bad_wr) | |
2366 | break; | |
2367 | } | |
2368 | ||
67cdb40c RD |
2369 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2370 | &resp, sizeof resp)) | |
2371 | ret = -EFAULT; | |
2372 | ||
2373 | out: | |
67cdb40c RD |
2374 | while (wr) { |
2375 | next = wr->next; | |
2376 | kfree(wr); | |
2377 | wr = next; | |
2378 | } | |
2379 | ||
2380 | return ret ? ret : in_len; | |
2381 | } | |
2382 | ||
2383 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
2384 | const char __user *buf, int in_len, | |
2385 | int out_len) | |
2386 | { | |
2387 | struct ib_uverbs_create_ah cmd; | |
2388 | struct ib_uverbs_create_ah_resp resp; | |
2389 | struct ib_uobject *uobj; | |
2390 | struct ib_pd *pd; | |
2391 | struct ib_ah *ah; | |
2392 | struct ib_ah_attr attr; | |
2393 | int ret; | |
2394 | ||
2395 | if (out_len < sizeof resp) | |
2396 | return -ENOSPC; | |
2397 | ||
2398 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2399 | return -EFAULT; | |
2400 | ||
2401 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
2402 | if (!uobj) | |
2403 | return -ENOMEM; | |
2404 | ||
3bea57a5 | 2405 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_class); |
9ead190b | 2406 | down_write(&uobj->mutex); |
67cdb40c | 2407 | |
9ead190b RD |
2408 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
2409 | if (!pd) { | |
67cdb40c | 2410 | ret = -EINVAL; |
9ead190b | 2411 | goto err; |
67cdb40c RD |
2412 | } |
2413 | ||
67cdb40c RD |
2414 | attr.dlid = cmd.attr.dlid; |
2415 | attr.sl = cmd.attr.sl; | |
2416 | attr.src_path_bits = cmd.attr.src_path_bits; | |
2417 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 2418 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
2419 | attr.port_num = cmd.attr.port_num; |
2420 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
2421 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
2422 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
2423 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
2424 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
2425 | ||
2426 | ah = ib_create_ah(pd, &attr); | |
2427 | if (IS_ERR(ah)) { | |
2428 | ret = PTR_ERR(ah); | |
ec924b47 | 2429 | goto err_put; |
67cdb40c RD |
2430 | } |
2431 | ||
9ead190b RD |
2432 | ah->uobject = uobj; |
2433 | uobj->object = ah; | |
67cdb40c | 2434 | |
9ead190b | 2435 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
2436 | if (ret) |
2437 | goto err_destroy; | |
2438 | ||
2439 | resp.ah_handle = uobj->id; | |
2440 | ||
2441 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2442 | &resp, sizeof resp)) { | |
2443 | ret = -EFAULT; | |
9ead190b | 2444 | goto err_copy; |
67cdb40c RD |
2445 | } |
2446 | ||
9ead190b RD |
2447 | put_pd_read(pd); |
2448 | ||
95ed644f | 2449 | mutex_lock(&file->mutex); |
67cdb40c | 2450 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 2451 | mutex_unlock(&file->mutex); |
67cdb40c | 2452 | |
9ead190b RD |
2453 | uobj->live = 1; |
2454 | ||
2455 | up_write(&uobj->mutex); | |
67cdb40c RD |
2456 | |
2457 | return in_len; | |
2458 | ||
9ead190b RD |
2459 | err_copy: |
2460 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
2461 | |
2462 | err_destroy: | |
2463 | ib_destroy_ah(ah); | |
2464 | ||
ec924b47 MT |
2465 | err_put: |
2466 | put_pd_read(pd); | |
2467 | ||
9ead190b RD |
2468 | err: |
2469 | put_uobj_write(uobj); | |
67cdb40c RD |
2470 | return ret; |
2471 | } | |
2472 | ||
2473 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
2474 | const char __user *buf, int in_len, int out_len) | |
2475 | { | |
2476 | struct ib_uverbs_destroy_ah cmd; | |
2477 | struct ib_ah *ah; | |
2478 | struct ib_uobject *uobj; | |
9ead190b | 2479 | int ret; |
67cdb40c RD |
2480 | |
2481 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2482 | return -EFAULT; | |
2483 | ||
9ead190b RD |
2484 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
2485 | if (!uobj) | |
2486 | return -EINVAL; | |
2487 | ah = uobj->object; | |
67cdb40c | 2488 | |
9ead190b RD |
2489 | ret = ib_destroy_ah(ah); |
2490 | if (!ret) | |
2491 | uobj->live = 0; | |
67cdb40c | 2492 | |
9ead190b | 2493 | put_uobj_write(uobj); |
67cdb40c | 2494 | |
67cdb40c | 2495 | if (ret) |
9ead190b | 2496 | return ret; |
67cdb40c | 2497 | |
9ead190b | 2498 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 2499 | |
95ed644f | 2500 | mutex_lock(&file->mutex); |
67cdb40c | 2501 | list_del(&uobj->list); |
95ed644f | 2502 | mutex_unlock(&file->mutex); |
67cdb40c | 2503 | |
9ead190b | 2504 | put_uobj(uobj); |
67cdb40c | 2505 | |
9ead190b | 2506 | return in_len; |
67cdb40c RD |
2507 | } |
2508 | ||
bc38a6ab RD |
2509 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
2510 | const char __user *buf, int in_len, | |
2511 | int out_len) | |
2512 | { | |
2513 | struct ib_uverbs_attach_mcast cmd; | |
2514 | struct ib_qp *qp; | |
9ead190b | 2515 | struct ib_uqp_object *obj; |
f4e40156 | 2516 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 2517 | int ret; |
bc38a6ab RD |
2518 | |
2519 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2520 | return -EFAULT; | |
2521 | ||
e214a0fe | 2522 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2523 | if (!qp) |
2524 | return -EINVAL; | |
f4e40156 | 2525 | |
9ead190b | 2526 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 2527 | |
9ead190b | 2528 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
2529 | if (cmd.mlid == mcast->lid && |
2530 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
2531 | ret = 0; | |
9ead190b | 2532 | goto out_put; |
f4e40156 JM |
2533 | } |
2534 | ||
2535 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
2536 | if (!mcast) { | |
2537 | ret = -ENOMEM; | |
9ead190b | 2538 | goto out_put; |
f4e40156 JM |
2539 | } |
2540 | ||
2541 | mcast->lid = cmd.mlid; | |
2542 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 2543 | |
f4e40156 | 2544 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
2545 | if (!ret) |
2546 | list_add_tail(&mcast->list, &obj->mcast_list); | |
2547 | else | |
f4e40156 JM |
2548 | kfree(mcast); |
2549 | ||
9ead190b | 2550 | out_put: |
e214a0fe | 2551 | put_qp_write(qp); |
bc38a6ab RD |
2552 | |
2553 | return ret ? ret : in_len; | |
2554 | } | |
2555 | ||
2556 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
2557 | const char __user *buf, int in_len, | |
2558 | int out_len) | |
2559 | { | |
2560 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 2561 | struct ib_uqp_object *obj; |
bc38a6ab | 2562 | struct ib_qp *qp; |
f4e40156 | 2563 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
2564 | int ret = -EINVAL; |
2565 | ||
2566 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2567 | return -EFAULT; | |
2568 | ||
e214a0fe | 2569 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2570 | if (!qp) |
2571 | return -EINVAL; | |
bc38a6ab | 2572 | |
f4e40156 JM |
2573 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
2574 | if (ret) | |
9ead190b | 2575 | goto out_put; |
f4e40156 | 2576 | |
9ead190b | 2577 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 2578 | |
9ead190b | 2579 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
2580 | if (cmd.mlid == mcast->lid && |
2581 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
2582 | list_del(&mcast->list); | |
2583 | kfree(mcast); | |
2584 | break; | |
2585 | } | |
2586 | ||
9ead190b | 2587 | out_put: |
e214a0fe | 2588 | put_qp_write(qp); |
bc38a6ab RD |
2589 | |
2590 | return ret ? ret : in_len; | |
2591 | } | |
f520ba5a | 2592 | |
b68c9560 | 2593 | static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, |
436f2ad0 HHZ |
2594 | union ib_flow_spec *ib_spec) |
2595 | { | |
c780d82a YD |
2596 | if (kern_spec->reserved) |
2597 | return -EINVAL; | |
2598 | ||
436f2ad0 HHZ |
2599 | ib_spec->type = kern_spec->type; |
2600 | ||
2601 | switch (ib_spec->type) { | |
2602 | case IB_FLOW_SPEC_ETH: | |
2603 | ib_spec->eth.size = sizeof(struct ib_flow_spec_eth); | |
2604 | if (ib_spec->eth.size != kern_spec->eth.size) | |
2605 | return -EINVAL; | |
2606 | memcpy(&ib_spec->eth.val, &kern_spec->eth.val, | |
2607 | sizeof(struct ib_flow_eth_filter)); | |
2608 | memcpy(&ib_spec->eth.mask, &kern_spec->eth.mask, | |
2609 | sizeof(struct ib_flow_eth_filter)); | |
2610 | break; | |
2611 | case IB_FLOW_SPEC_IPV4: | |
2612 | ib_spec->ipv4.size = sizeof(struct ib_flow_spec_ipv4); | |
2613 | if (ib_spec->ipv4.size != kern_spec->ipv4.size) | |
2614 | return -EINVAL; | |
2615 | memcpy(&ib_spec->ipv4.val, &kern_spec->ipv4.val, | |
2616 | sizeof(struct ib_flow_ipv4_filter)); | |
2617 | memcpy(&ib_spec->ipv4.mask, &kern_spec->ipv4.mask, | |
2618 | sizeof(struct ib_flow_ipv4_filter)); | |
2619 | break; | |
2620 | case IB_FLOW_SPEC_TCP: | |
2621 | case IB_FLOW_SPEC_UDP: | |
2622 | ib_spec->tcp_udp.size = sizeof(struct ib_flow_spec_tcp_udp); | |
2623 | if (ib_spec->tcp_udp.size != kern_spec->tcp_udp.size) | |
2624 | return -EINVAL; | |
2625 | memcpy(&ib_spec->tcp_udp.val, &kern_spec->tcp_udp.val, | |
2626 | sizeof(struct ib_flow_tcp_udp_filter)); | |
2627 | memcpy(&ib_spec->tcp_udp.mask, &kern_spec->tcp_udp.mask, | |
2628 | sizeof(struct ib_flow_tcp_udp_filter)); | |
2629 | break; | |
2630 | default: | |
2631 | return -EINVAL; | |
2632 | } | |
2633 | return 0; | |
2634 | } | |
2635 | ||
f21519b2 YD |
2636 | int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, |
2637 | struct ib_udata *ucore, | |
2638 | struct ib_udata *uhw) | |
436f2ad0 HHZ |
2639 | { |
2640 | struct ib_uverbs_create_flow cmd; | |
2641 | struct ib_uverbs_create_flow_resp resp; | |
2642 | struct ib_uobject *uobj; | |
2643 | struct ib_flow *flow_id; | |
d82693da | 2644 | struct ib_uverbs_flow_attr *kern_flow_attr; |
436f2ad0 HHZ |
2645 | struct ib_flow_attr *flow_attr; |
2646 | struct ib_qp *qp; | |
2647 | int err = 0; | |
2648 | void *kern_spec; | |
2649 | void *ib_spec; | |
2650 | int i; | |
436f2ad0 | 2651 | |
f21519b2 | 2652 | if (ucore->outlen < sizeof(resp)) |
436f2ad0 HHZ |
2653 | return -ENOSPC; |
2654 | ||
f21519b2 YD |
2655 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
2656 | if (err) | |
2657 | return err; | |
2658 | ||
2659 | ucore->inbuf += sizeof(cmd); | |
2660 | ucore->inlen -= sizeof(cmd); | |
436f2ad0 | 2661 | |
22878dbc MB |
2662 | if (cmd.comp_mask) |
2663 | return -EINVAL; | |
2664 | ||
436f2ad0 HHZ |
2665 | if ((cmd.flow_attr.type == IB_FLOW_ATTR_SNIFFER && |
2666 | !capable(CAP_NET_ADMIN)) || !capable(CAP_NET_RAW)) | |
2667 | return -EPERM; | |
2668 | ||
f8848274 | 2669 | if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) |
22878dbc MB |
2670 | return -EINVAL; |
2671 | ||
f21519b2 | 2672 | if (cmd.flow_attr.size > ucore->inlen || |
f8848274 | 2673 | cmd.flow_attr.size > |
b68c9560 | 2674 | (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) |
22878dbc MB |
2675 | return -EINVAL; |
2676 | ||
c780d82a YD |
2677 | if (cmd.flow_attr.reserved[0] || |
2678 | cmd.flow_attr.reserved[1]) | |
2679 | return -EINVAL; | |
2680 | ||
436f2ad0 | 2681 | if (cmd.flow_attr.num_of_specs) { |
f8848274 MB |
2682 | kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, |
2683 | GFP_KERNEL); | |
436f2ad0 HHZ |
2684 | if (!kern_flow_attr) |
2685 | return -ENOMEM; | |
2686 | ||
2687 | memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr)); | |
f21519b2 YD |
2688 | err = ib_copy_from_udata(kern_flow_attr + 1, ucore, |
2689 | cmd.flow_attr.size); | |
2690 | if (err) | |
436f2ad0 | 2691 | goto err_free_attr; |
436f2ad0 HHZ |
2692 | } else { |
2693 | kern_flow_attr = &cmd.flow_attr; | |
436f2ad0 HHZ |
2694 | } |
2695 | ||
2696 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
2697 | if (!uobj) { | |
2698 | err = -ENOMEM; | |
2699 | goto err_free_attr; | |
2700 | } | |
2701 | init_uobj(uobj, 0, file->ucontext, &rule_lock_class); | |
2702 | down_write(&uobj->mutex); | |
2703 | ||
2704 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); | |
2705 | if (!qp) { | |
2706 | err = -EINVAL; | |
2707 | goto err_uobj; | |
2708 | } | |
2709 | ||
f8848274 | 2710 | flow_attr = kmalloc(sizeof(*flow_attr) + cmd.flow_attr.size, GFP_KERNEL); |
436f2ad0 HHZ |
2711 | if (!flow_attr) { |
2712 | err = -ENOMEM; | |
2713 | goto err_put; | |
2714 | } | |
2715 | ||
2716 | flow_attr->type = kern_flow_attr->type; | |
2717 | flow_attr->priority = kern_flow_attr->priority; | |
2718 | flow_attr->num_of_specs = kern_flow_attr->num_of_specs; | |
2719 | flow_attr->port = kern_flow_attr->port; | |
2720 | flow_attr->flags = kern_flow_attr->flags; | |
2721 | flow_attr->size = sizeof(*flow_attr); | |
2722 | ||
2723 | kern_spec = kern_flow_attr + 1; | |
2724 | ib_spec = flow_attr + 1; | |
f8848274 | 2725 | for (i = 0; i < flow_attr->num_of_specs && |
b68c9560 | 2726 | cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) && |
f8848274 | 2727 | cmd.flow_attr.size >= |
b68c9560 | 2728 | ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) { |
436f2ad0 HHZ |
2729 | err = kern_spec_to_ib_spec(kern_spec, ib_spec); |
2730 | if (err) | |
2731 | goto err_free; | |
2732 | flow_attr->size += | |
2733 | ((union ib_flow_spec *) ib_spec)->size; | |
b68c9560 YD |
2734 | cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size; |
2735 | kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size; | |
436f2ad0 HHZ |
2736 | ib_spec += ((union ib_flow_spec *) ib_spec)->size; |
2737 | } | |
f8848274 MB |
2738 | if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { |
2739 | pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", | |
2740 | i, cmd.flow_attr.size); | |
436f2ad0 HHZ |
2741 | goto err_free; |
2742 | } | |
2743 | flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER); | |
2744 | if (IS_ERR(flow_id)) { | |
2745 | err = PTR_ERR(flow_id); | |
2746 | goto err_free; | |
2747 | } | |
2748 | flow_id->qp = qp; | |
2749 | flow_id->uobject = uobj; | |
2750 | uobj->object = flow_id; | |
2751 | ||
2752 | err = idr_add_uobj(&ib_uverbs_rule_idr, uobj); | |
2753 | if (err) | |
2754 | goto destroy_flow; | |
2755 | ||
2756 | memset(&resp, 0, sizeof(resp)); | |
2757 | resp.flow_handle = uobj->id; | |
2758 | ||
f21519b2 YD |
2759 | err = ib_copy_to_udata(ucore, |
2760 | &resp, sizeof(resp)); | |
2761 | if (err) | |
436f2ad0 | 2762 | goto err_copy; |
436f2ad0 HHZ |
2763 | |
2764 | put_qp_read(qp); | |
2765 | mutex_lock(&file->mutex); | |
2766 | list_add_tail(&uobj->list, &file->ucontext->rule_list); | |
2767 | mutex_unlock(&file->mutex); | |
2768 | ||
2769 | uobj->live = 1; | |
2770 | ||
2771 | up_write(&uobj->mutex); | |
2772 | kfree(flow_attr); | |
2773 | if (cmd.flow_attr.num_of_specs) | |
2774 | kfree(kern_flow_attr); | |
f21519b2 | 2775 | return 0; |
436f2ad0 HHZ |
2776 | err_copy: |
2777 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
2778 | destroy_flow: | |
2779 | ib_destroy_flow(flow_id); | |
2780 | err_free: | |
2781 | kfree(flow_attr); | |
2782 | err_put: | |
2783 | put_qp_read(qp); | |
2784 | err_uobj: | |
2785 | put_uobj_write(uobj); | |
2786 | err_free_attr: | |
2787 | if (cmd.flow_attr.num_of_specs) | |
2788 | kfree(kern_flow_attr); | |
2789 | return err; | |
2790 | } | |
2791 | ||
f21519b2 YD |
2792 | int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file, |
2793 | struct ib_udata *ucore, | |
2794 | struct ib_udata *uhw) | |
2795 | { | |
436f2ad0 HHZ |
2796 | struct ib_uverbs_destroy_flow cmd; |
2797 | struct ib_flow *flow_id; | |
2798 | struct ib_uobject *uobj; | |
2799 | int ret; | |
2800 | ||
f21519b2 YD |
2801 | ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
2802 | if (ret) | |
2803 | return ret; | |
436f2ad0 | 2804 | |
2782c2d3 YD |
2805 | if (cmd.comp_mask) |
2806 | return -EINVAL; | |
2807 | ||
436f2ad0 HHZ |
2808 | uobj = idr_write_uobj(&ib_uverbs_rule_idr, cmd.flow_handle, |
2809 | file->ucontext); | |
2810 | if (!uobj) | |
2811 | return -EINVAL; | |
2812 | flow_id = uobj->object; | |
2813 | ||
2814 | ret = ib_destroy_flow(flow_id); | |
2815 | if (!ret) | |
2816 | uobj->live = 0; | |
2817 | ||
2818 | put_uobj_write(uobj); | |
2819 | ||
2820 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
2821 | ||
2822 | mutex_lock(&file->mutex); | |
2823 | list_del(&uobj->list); | |
2824 | mutex_unlock(&file->mutex); | |
2825 | ||
2826 | put_uobj(uobj); | |
2827 | ||
f21519b2 | 2828 | return ret; |
436f2ad0 HHZ |
2829 | } |
2830 | ||
c89d1bed SH |
2831 | static int __uverbs_create_xsrq(struct ib_uverbs_file *file, |
2832 | struct ib_uverbs_create_xsrq *cmd, | |
2833 | struct ib_udata *udata) | |
f520ba5a | 2834 | { |
f520ba5a | 2835 | struct ib_uverbs_create_srq_resp resp; |
8541f8de | 2836 | struct ib_usrq_object *obj; |
f520ba5a RD |
2837 | struct ib_pd *pd; |
2838 | struct ib_srq *srq; | |
8541f8de | 2839 | struct ib_uobject *uninitialized_var(xrcd_uobj); |
f520ba5a RD |
2840 | struct ib_srq_init_attr attr; |
2841 | int ret; | |
2842 | ||
9ead190b RD |
2843 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
2844 | if (!obj) | |
f520ba5a RD |
2845 | return -ENOMEM; |
2846 | ||
3bea57a5 | 2847 | init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_class); |
8541f8de | 2848 | down_write(&obj->uevent.uobject.mutex); |
f520ba5a | 2849 | |
8541f8de | 2850 | if (cmd->srq_type == IB_SRQT_XRC) { |
8541f8de SH |
2851 | attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj); |
2852 | if (!attr.ext.xrc.xrcd) { | |
2853 | ret = -EINVAL; | |
5909ce54 | 2854 | goto err; |
8541f8de SH |
2855 | } |
2856 | ||
2857 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); | |
2858 | atomic_inc(&obj->uxrcd->refcnt); | |
5909ce54 RD |
2859 | |
2860 | attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0); | |
2861 | if (!attr.ext.xrc.cq) { | |
2862 | ret = -EINVAL; | |
2863 | goto err_put_xrcd; | |
2864 | } | |
2865 | } | |
2866 | ||
2867 | pd = idr_read_pd(cmd->pd_handle, file->ucontext); | |
2868 | if (!pd) { | |
2869 | ret = -EINVAL; | |
2870 | goto err_put_cq; | |
8541f8de SH |
2871 | } |
2872 | ||
f520ba5a RD |
2873 | attr.event_handler = ib_uverbs_srq_event_handler; |
2874 | attr.srq_context = file; | |
8541f8de SH |
2875 | attr.srq_type = cmd->srq_type; |
2876 | attr.attr.max_wr = cmd->max_wr; | |
2877 | attr.attr.max_sge = cmd->max_sge; | |
2878 | attr.attr.srq_limit = cmd->srq_limit; | |
f520ba5a | 2879 | |
8541f8de SH |
2880 | obj->uevent.events_reported = 0; |
2881 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
f520ba5a | 2882 | |
8541f8de | 2883 | srq = pd->device->create_srq(pd, &attr, udata); |
f520ba5a RD |
2884 | if (IS_ERR(srq)) { |
2885 | ret = PTR_ERR(srq); | |
ec924b47 | 2886 | goto err_put; |
f520ba5a RD |
2887 | } |
2888 | ||
8541f8de SH |
2889 | srq->device = pd->device; |
2890 | srq->pd = pd; | |
2891 | srq->srq_type = cmd->srq_type; | |
2892 | srq->uobject = &obj->uevent.uobject; | |
f520ba5a RD |
2893 | srq->event_handler = attr.event_handler; |
2894 | srq->srq_context = attr.srq_context; | |
8541f8de SH |
2895 | |
2896 | if (cmd->srq_type == IB_SRQT_XRC) { | |
2897 | srq->ext.xrc.cq = attr.ext.xrc.cq; | |
2898 | srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; | |
2899 | atomic_inc(&attr.ext.xrc.cq->usecnt); | |
2900 | atomic_inc(&attr.ext.xrc.xrcd->usecnt); | |
2901 | } | |
2902 | ||
f520ba5a RD |
2903 | atomic_inc(&pd->usecnt); |
2904 | atomic_set(&srq->usecnt, 0); | |
2905 | ||
8541f8de SH |
2906 | obj->uevent.uobject.object = srq; |
2907 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); | |
f520ba5a RD |
2908 | if (ret) |
2909 | goto err_destroy; | |
2910 | ||
9ead190b | 2911 | memset(&resp, 0, sizeof resp); |
8541f8de | 2912 | resp.srq_handle = obj->uevent.uobject.id; |
ea88fd16 DB |
2913 | resp.max_wr = attr.attr.max_wr; |
2914 | resp.max_sge = attr.attr.max_sge; | |
8541f8de SH |
2915 | if (cmd->srq_type == IB_SRQT_XRC) |
2916 | resp.srqn = srq->ext.xrc.srq_num; | |
f520ba5a | 2917 | |
8541f8de | 2918 | if (copy_to_user((void __user *) (unsigned long) cmd->response, |
f520ba5a RD |
2919 | &resp, sizeof resp)) { |
2920 | ret = -EFAULT; | |
9ead190b | 2921 | goto err_copy; |
f520ba5a RD |
2922 | } |
2923 | ||
8541f8de SH |
2924 | if (cmd->srq_type == IB_SRQT_XRC) { |
2925 | put_uobj_read(xrcd_uobj); | |
2926 | put_cq_read(attr.ext.xrc.cq); | |
2927 | } | |
9ead190b RD |
2928 | put_pd_read(pd); |
2929 | ||
95ed644f | 2930 | mutex_lock(&file->mutex); |
8541f8de | 2931 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list); |
95ed644f | 2932 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 2933 | |
8541f8de | 2934 | obj->uevent.uobject.live = 1; |
9ead190b | 2935 | |
8541f8de | 2936 | up_write(&obj->uevent.uobject.mutex); |
f520ba5a | 2937 | |
8541f8de | 2938 | return 0; |
f520ba5a | 2939 | |
9ead190b | 2940 | err_copy: |
8541f8de | 2941 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); |
f520ba5a RD |
2942 | |
2943 | err_destroy: | |
2944 | ib_destroy_srq(srq); | |
2945 | ||
ec924b47 | 2946 | err_put: |
5909ce54 | 2947 | put_pd_read(pd); |
8541f8de SH |
2948 | |
2949 | err_put_cq: | |
2950 | if (cmd->srq_type == IB_SRQT_XRC) | |
2951 | put_cq_read(attr.ext.xrc.cq); | |
2952 | ||
5909ce54 RD |
2953 | err_put_xrcd: |
2954 | if (cmd->srq_type == IB_SRQT_XRC) { | |
2955 | atomic_dec(&obj->uxrcd->refcnt); | |
2956 | put_uobj_read(xrcd_uobj); | |
2957 | } | |
ec924b47 | 2958 | |
9ead190b | 2959 | err: |
8541f8de | 2960 | put_uobj_write(&obj->uevent.uobject); |
f520ba5a RD |
2961 | return ret; |
2962 | } | |
2963 | ||
8541f8de SH |
2964 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, |
2965 | const char __user *buf, int in_len, | |
2966 | int out_len) | |
2967 | { | |
2968 | struct ib_uverbs_create_srq cmd; | |
2969 | struct ib_uverbs_create_xsrq xcmd; | |
2970 | struct ib_uverbs_create_srq_resp resp; | |
2971 | struct ib_udata udata; | |
2972 | int ret; | |
2973 | ||
2974 | if (out_len < sizeof resp) | |
2975 | return -ENOSPC; | |
2976 | ||
2977 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2978 | return -EFAULT; | |
2979 | ||
2980 | xcmd.response = cmd.response; | |
2981 | xcmd.user_handle = cmd.user_handle; | |
2982 | xcmd.srq_type = IB_SRQT_BASIC; | |
2983 | xcmd.pd_handle = cmd.pd_handle; | |
2984 | xcmd.max_wr = cmd.max_wr; | |
2985 | xcmd.max_sge = cmd.max_sge; | |
2986 | xcmd.srq_limit = cmd.srq_limit; | |
2987 | ||
2988 | INIT_UDATA(&udata, buf + sizeof cmd, | |
2989 | (unsigned long) cmd.response + sizeof resp, | |
2990 | in_len - sizeof cmd, out_len - sizeof resp); | |
2991 | ||
2992 | ret = __uverbs_create_xsrq(file, &xcmd, &udata); | |
2993 | if (ret) | |
2994 | return ret; | |
2995 | ||
2996 | return in_len; | |
2997 | } | |
2998 | ||
2999 | ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, | |
3000 | const char __user *buf, int in_len, int out_len) | |
3001 | { | |
3002 | struct ib_uverbs_create_xsrq cmd; | |
3003 | struct ib_uverbs_create_srq_resp resp; | |
3004 | struct ib_udata udata; | |
3005 | int ret; | |
3006 | ||
3007 | if (out_len < sizeof resp) | |
3008 | return -ENOSPC; | |
3009 | ||
3010 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3011 | return -EFAULT; | |
3012 | ||
3013 | INIT_UDATA(&udata, buf + sizeof cmd, | |
3014 | (unsigned long) cmd.response + sizeof resp, | |
3015 | in_len - sizeof cmd, out_len - sizeof resp); | |
3016 | ||
3017 | ret = __uverbs_create_xsrq(file, &cmd, &udata); | |
3018 | if (ret) | |
3019 | return ret; | |
3020 | ||
3021 | return in_len; | |
3022 | } | |
3023 | ||
f520ba5a RD |
3024 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, |
3025 | const char __user *buf, int in_len, | |
3026 | int out_len) | |
3027 | { | |
3028 | struct ib_uverbs_modify_srq cmd; | |
9bc57e2d | 3029 | struct ib_udata udata; |
f520ba5a RD |
3030 | struct ib_srq *srq; |
3031 | struct ib_srq_attr attr; | |
3032 | int ret; | |
3033 | ||
3034 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3035 | return -EFAULT; | |
3036 | ||
9bc57e2d RC |
3037 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
3038 | out_len); | |
3039 | ||
9ead190b RD |
3040 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
3041 | if (!srq) | |
3042 | return -EINVAL; | |
f520ba5a RD |
3043 | |
3044 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
3045 | attr.srq_limit = cmd.srq_limit; |
3046 | ||
9bc57e2d | 3047 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
f520ba5a | 3048 | |
9ead190b | 3049 | put_srq_read(srq); |
f520ba5a RD |
3050 | |
3051 | return ret ? ret : in_len; | |
3052 | } | |
3053 | ||
8bdb0e86 DB |
3054 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
3055 | const char __user *buf, | |
3056 | int in_len, int out_len) | |
3057 | { | |
3058 | struct ib_uverbs_query_srq cmd; | |
3059 | struct ib_uverbs_query_srq_resp resp; | |
3060 | struct ib_srq_attr attr; | |
3061 | struct ib_srq *srq; | |
3062 | int ret; | |
3063 | ||
3064 | if (out_len < sizeof resp) | |
3065 | return -ENOSPC; | |
3066 | ||
3067 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3068 | return -EFAULT; | |
3069 | ||
9ead190b RD |
3070 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
3071 | if (!srq) | |
3072 | return -EINVAL; | |
8bdb0e86 | 3073 | |
9ead190b | 3074 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 3075 | |
9ead190b | 3076 | put_srq_read(srq); |
8bdb0e86 DB |
3077 | |
3078 | if (ret) | |
9ead190b | 3079 | return ret; |
8bdb0e86 DB |
3080 | |
3081 | memset(&resp, 0, sizeof resp); | |
3082 | ||
3083 | resp.max_wr = attr.max_wr; | |
3084 | resp.max_sge = attr.max_sge; | |
3085 | resp.srq_limit = attr.srq_limit; | |
3086 | ||
3087 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
3088 | &resp, sizeof resp)) | |
9ead190b | 3089 | return -EFAULT; |
8bdb0e86 | 3090 | |
9ead190b | 3091 | return in_len; |
8bdb0e86 DB |
3092 | } |
3093 | ||
f520ba5a RD |
3094 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
3095 | const char __user *buf, int in_len, | |
3096 | int out_len) | |
3097 | { | |
63aaf647 RD |
3098 | struct ib_uverbs_destroy_srq cmd; |
3099 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 3100 | struct ib_uobject *uobj; |
63aaf647 | 3101 | struct ib_srq *srq; |
9ead190b | 3102 | struct ib_uevent_object *obj; |
63aaf647 | 3103 | int ret = -EINVAL; |
846be90d YH |
3104 | struct ib_usrq_object *us; |
3105 | enum ib_srq_type srq_type; | |
f520ba5a RD |
3106 | |
3107 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3108 | return -EFAULT; | |
3109 | ||
9ead190b RD |
3110 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
3111 | if (!uobj) | |
3112 | return -EINVAL; | |
3113 | srq = uobj->object; | |
3114 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
846be90d | 3115 | srq_type = srq->srq_type; |
63aaf647 | 3116 | |
9ead190b RD |
3117 | ret = ib_destroy_srq(srq); |
3118 | if (!ret) | |
3119 | uobj->live = 0; | |
f520ba5a | 3120 | |
9ead190b | 3121 | put_uobj_write(uobj); |
f520ba5a | 3122 | |
f520ba5a | 3123 | if (ret) |
9ead190b | 3124 | return ret; |
f520ba5a | 3125 | |
846be90d YH |
3126 | if (srq_type == IB_SRQT_XRC) { |
3127 | us = container_of(obj, struct ib_usrq_object, uevent); | |
3128 | atomic_dec(&us->uxrcd->refcnt); | |
3129 | } | |
3130 | ||
9ead190b | 3131 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 3132 | |
95ed644f | 3133 | mutex_lock(&file->mutex); |
9ead190b | 3134 | list_del(&uobj->list); |
95ed644f | 3135 | mutex_unlock(&file->mutex); |
f520ba5a | 3136 | |
9ead190b | 3137 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 3138 | |
9ead190b RD |
3139 | memset(&resp, 0, sizeof resp); |
3140 | resp.events_reported = obj->events_reported; | |
63aaf647 | 3141 | |
9ead190b | 3142 | put_uobj(uobj); |
f520ba5a | 3143 | |
63aaf647 RD |
3144 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
3145 | &resp, sizeof resp)) | |
3146 | ret = -EFAULT; | |
3147 | ||
f520ba5a RD |
3148 | return ret ? ret : in_len; |
3149 | } |