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bc38a6ab RD |
1 | /* |
2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. | |
f7c6a7b5 | 3 | * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
eb9d3cd5 | 4 | * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
8bdb0e86 | 5 | * Copyright (c) 2006 Mellanox Technologies. All rights reserved. |
bc38a6ab RD |
6 | * |
7 | * This software is available to you under a choice of one of two | |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or | |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
16 | * | |
17 | * - Redistributions of source code must retain the above | |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
20 | * | |
21 | * - Redistributions in binary form must reproduce the above | |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
25 | * | |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
bc38a6ab RD |
34 | */ |
35 | ||
6b73597e | 36 | #include <linux/file.h> |
70a30e16 | 37 | #include <linux/fs.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
8ada2c1c | 39 | #include <linux/sched.h> |
6b73597e | 40 | |
bc38a6ab RD |
41 | #include <asm/uaccess.h> |
42 | ||
43 | #include "uverbs.h" | |
ed4c54e5 | 44 | #include "core_priv.h" |
bc38a6ab | 45 | |
3bea57a5 RD |
46 | struct uverbs_lock_class { |
47 | struct lock_class_key key; | |
48 | char name[16]; | |
49 | }; | |
50 | ||
51 | static struct uverbs_lock_class pd_lock_class = { .name = "PD-uobj" }; | |
52 | static struct uverbs_lock_class mr_lock_class = { .name = "MR-uobj" }; | |
6b52a12b | 53 | static struct uverbs_lock_class mw_lock_class = { .name = "MW-uobj" }; |
3bea57a5 RD |
54 | static struct uverbs_lock_class cq_lock_class = { .name = "CQ-uobj" }; |
55 | static struct uverbs_lock_class qp_lock_class = { .name = "QP-uobj" }; | |
56 | static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" }; | |
57 | static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" }; | |
58 | static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" }; | |
436f2ad0 | 59 | static struct uverbs_lock_class rule_lock_class = { .name = "RULE-uobj" }; |
f213c052 | 60 | static struct uverbs_lock_class wq_lock_class = { .name = "WQ-uobj" }; |
de019a94 | 61 | static struct uverbs_lock_class rwq_ind_table_lock_class = { .name = "IND_TBL-uobj" }; |
bc38a6ab | 62 | |
9ead190b RD |
63 | /* |
64 | * The ib_uobject locking scheme is as follows: | |
65 | * | |
66 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it | |
d144da8c | 67 | * needs to be held during all idr write operations. When an object is |
9ead190b | 68 | * looked up, a reference must be taken on the object's kref before |
d144da8c MM |
69 | * dropping this lock. For read operations, the rcu_read_lock() |
70 | * and rcu_write_lock() but similarly the kref reference is grabbed | |
71 | * before the rcu_read_unlock(). | |
9ead190b RD |
72 | * |
73 | * - Each object also has an rwsem. This rwsem must be held for | |
74 | * reading while an operation that uses the object is performed. | |
75 | * For example, while registering an MR, the associated PD's | |
76 | * uobject.mutex must be held for reading. The rwsem must be held | |
77 | * for writing while initializing or destroying an object. | |
78 | * | |
79 | * - In addition, each object has a "live" flag. If this flag is not | |
80 | * set, then lookups of the object will fail even if it is found in | |
81 | * the idr. This handles a reader that blocks and does not acquire | |
82 | * the rwsem until after the object is destroyed. The destroy | |
83 | * operation will set the live flag to 0 and then drop the rwsem; | |
84 | * this will allow the reader to acquire the rwsem, see that the | |
85 | * live flag is 0, and then drop the rwsem and its reference to | |
86 | * object. The underlying storage will not be freed until the last | |
87 | * reference to the object is dropped. | |
88 | */ | |
89 | ||
90 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, | |
3bea57a5 | 91 | struct ib_ucontext *context, struct uverbs_lock_class *c) |
9ead190b RD |
92 | { |
93 | uobj->user_handle = user_handle; | |
94 | uobj->context = context; | |
95 | kref_init(&uobj->ref); | |
96 | init_rwsem(&uobj->mutex); | |
3bea57a5 | 97 | lockdep_set_class_and_name(&uobj->mutex, &c->key, c->name); |
9ead190b RD |
98 | uobj->live = 0; |
99 | } | |
100 | ||
101 | static void release_uobj(struct kref *kref) | |
102 | { | |
d144da8c | 103 | kfree_rcu(container_of(kref, struct ib_uobject, ref), rcu); |
9ead190b RD |
104 | } |
105 | ||
106 | static void put_uobj(struct ib_uobject *uobj) | |
107 | { | |
108 | kref_put(&uobj->ref, release_uobj); | |
109 | } | |
110 | ||
111 | static void put_uobj_read(struct ib_uobject *uobj) | |
112 | { | |
113 | up_read(&uobj->mutex); | |
114 | put_uobj(uobj); | |
115 | } | |
116 | ||
117 | static void put_uobj_write(struct ib_uobject *uobj) | |
118 | { | |
119 | up_write(&uobj->mutex); | |
120 | put_uobj(uobj); | |
121 | } | |
122 | ||
123 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) | |
3463175d RD |
124 | { |
125 | int ret; | |
126 | ||
3b069c5d | 127 | idr_preload(GFP_KERNEL); |
9ead190b | 128 | spin_lock(&ib_uverbs_idr_lock); |
3463175d | 129 | |
3b069c5d TH |
130 | ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT); |
131 | if (ret >= 0) | |
132 | uobj->id = ret; | |
133 | ||
134 | spin_unlock(&ib_uverbs_idr_lock); | |
135 | idr_preload_end(); | |
3463175d | 136 | |
3b069c5d | 137 | return ret < 0 ? ret : 0; |
3463175d RD |
138 | } |
139 | ||
9ead190b RD |
140 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
141 | { | |
142 | spin_lock(&ib_uverbs_idr_lock); | |
143 | idr_remove(idr, uobj->id); | |
144 | spin_unlock(&ib_uverbs_idr_lock); | |
145 | } | |
146 | ||
147 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, | |
148 | struct ib_ucontext *context) | |
149 | { | |
150 | struct ib_uobject *uobj; | |
151 | ||
d144da8c | 152 | rcu_read_lock(); |
9ead190b | 153 | uobj = idr_find(idr, id); |
cbfb50e6 RD |
154 | if (uobj) { |
155 | if (uobj->context == context) | |
156 | kref_get(&uobj->ref); | |
157 | else | |
158 | uobj = NULL; | |
159 | } | |
d144da8c | 160 | rcu_read_unlock(); |
9ead190b RD |
161 | |
162 | return uobj; | |
163 | } | |
164 | ||
165 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, | |
1ccf6aa1 | 166 | struct ib_ucontext *context, int nested) |
9ead190b RD |
167 | { |
168 | struct ib_uobject *uobj; | |
169 | ||
170 | uobj = __idr_get_uobj(idr, id, context); | |
171 | if (!uobj) | |
172 | return NULL; | |
173 | ||
1ccf6aa1 RD |
174 | if (nested) |
175 | down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING); | |
176 | else | |
177 | down_read(&uobj->mutex); | |
9ead190b RD |
178 | if (!uobj->live) { |
179 | put_uobj_read(uobj); | |
180 | return NULL; | |
181 | } | |
182 | ||
183 | return uobj; | |
184 | } | |
185 | ||
186 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, | |
187 | struct ib_ucontext *context) | |
188 | { | |
189 | struct ib_uobject *uobj; | |
190 | ||
191 | uobj = __idr_get_uobj(idr, id, context); | |
192 | if (!uobj) | |
193 | return NULL; | |
194 | ||
195 | down_write(&uobj->mutex); | |
196 | if (!uobj->live) { | |
197 | put_uobj_write(uobj); | |
198 | return NULL; | |
199 | } | |
200 | ||
201 | return uobj; | |
202 | } | |
203 | ||
1ccf6aa1 RD |
204 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context, |
205 | int nested) | |
9ead190b RD |
206 | { |
207 | struct ib_uobject *uobj; | |
208 | ||
1ccf6aa1 | 209 | uobj = idr_read_uobj(idr, id, context, nested); |
9ead190b RD |
210 | return uobj ? uobj->object : NULL; |
211 | } | |
212 | ||
213 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) | |
214 | { | |
1ccf6aa1 | 215 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0); |
9ead190b RD |
216 | } |
217 | ||
218 | static void put_pd_read(struct ib_pd *pd) | |
219 | { | |
220 | put_uobj_read(pd->uobject); | |
221 | } | |
222 | ||
1ccf6aa1 | 223 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested) |
9ead190b | 224 | { |
1ccf6aa1 | 225 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested); |
9ead190b RD |
226 | } |
227 | ||
228 | static void put_cq_read(struct ib_cq *cq) | |
229 | { | |
230 | put_uobj_read(cq->uobject); | |
231 | } | |
232 | ||
233 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) | |
234 | { | |
1ccf6aa1 | 235 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0); |
9ead190b RD |
236 | } |
237 | ||
238 | static void put_ah_read(struct ib_ah *ah) | |
239 | { | |
240 | put_uobj_read(ah->uobject); | |
241 | } | |
242 | ||
243 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) | |
244 | { | |
1ccf6aa1 | 245 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0); |
9ead190b RD |
246 | } |
247 | ||
f213c052 YH |
248 | static struct ib_wq *idr_read_wq(int wq_handle, struct ib_ucontext *context) |
249 | { | |
250 | return idr_read_obj(&ib_uverbs_wq_idr, wq_handle, context, 0); | |
251 | } | |
252 | ||
253 | static void put_wq_read(struct ib_wq *wq) | |
254 | { | |
255 | put_uobj_read(wq->uobject); | |
256 | } | |
257 | ||
c70285f8 YH |
258 | static struct ib_rwq_ind_table *idr_read_rwq_indirection_table(int ind_table_handle, |
259 | struct ib_ucontext *context) | |
260 | { | |
261 | return idr_read_obj(&ib_uverbs_rwq_ind_tbl_idr, ind_table_handle, context, 0); | |
262 | } | |
263 | ||
264 | static void put_rwq_indirection_table_read(struct ib_rwq_ind_table *ind_table) | |
265 | { | |
266 | put_uobj_read(ind_table->uobject); | |
267 | } | |
268 | ||
e214a0fe EC |
269 | static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context) |
270 | { | |
271 | struct ib_uobject *uobj; | |
272 | ||
273 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context); | |
274 | return uobj ? uobj->object : NULL; | |
275 | } | |
276 | ||
9ead190b RD |
277 | static void put_qp_read(struct ib_qp *qp) |
278 | { | |
279 | put_uobj_read(qp->uobject); | |
280 | } | |
281 | ||
e214a0fe EC |
282 | static void put_qp_write(struct ib_qp *qp) |
283 | { | |
284 | put_uobj_write(qp->uobject); | |
285 | } | |
286 | ||
9ead190b RD |
287 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) |
288 | { | |
1ccf6aa1 | 289 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0); |
9ead190b RD |
290 | } |
291 | ||
292 | static void put_srq_read(struct ib_srq *srq) | |
293 | { | |
294 | put_uobj_read(srq->uobject); | |
295 | } | |
296 | ||
53d0bd1e SH |
297 | static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context, |
298 | struct ib_uobject **uobj) | |
299 | { | |
300 | *uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0); | |
301 | return *uobj ? (*uobj)->object : NULL; | |
302 | } | |
303 | ||
304 | static void put_xrcd_read(struct ib_uobject *uobj) | |
305 | { | |
306 | put_uobj_read(uobj); | |
307 | } | |
308 | ||
bc38a6ab | 309 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
057aec0d | 310 | struct ib_device *ib_dev, |
bc38a6ab RD |
311 | const char __user *buf, |
312 | int in_len, int out_len) | |
313 | { | |
314 | struct ib_uverbs_get_context cmd; | |
315 | struct ib_uverbs_get_context_resp resp; | |
316 | struct ib_udata udata; | |
63c47c28 | 317 | struct ib_ucontext *ucontext; |
6b73597e | 318 | struct file *filp; |
63c47c28 | 319 | int ret; |
bc38a6ab RD |
320 | |
321 | if (out_len < sizeof resp) | |
322 | return -ENOSPC; | |
323 | ||
324 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
325 | return -EFAULT; | |
326 | ||
95ed644f | 327 | mutex_lock(&file->mutex); |
63c47c28 RD |
328 | |
329 | if (file->ucontext) { | |
330 | ret = -EINVAL; | |
331 | goto err; | |
332 | } | |
333 | ||
bc38a6ab RD |
334 | INIT_UDATA(&udata, buf + sizeof cmd, |
335 | (unsigned long) cmd.response + sizeof resp, | |
336 | in_len - sizeof cmd, out_len - sizeof resp); | |
337 | ||
057aec0d | 338 | ucontext = ib_dev->alloc_ucontext(ib_dev, &udata); |
77f76013 | 339 | if (IS_ERR(ucontext)) { |
df42245a | 340 | ret = PTR_ERR(ucontext); |
77f76013 GC |
341 | goto err; |
342 | } | |
bc38a6ab | 343 | |
057aec0d | 344 | ucontext->device = ib_dev; |
63c47c28 RD |
345 | INIT_LIST_HEAD(&ucontext->pd_list); |
346 | INIT_LIST_HEAD(&ucontext->mr_list); | |
347 | INIT_LIST_HEAD(&ucontext->mw_list); | |
348 | INIT_LIST_HEAD(&ucontext->cq_list); | |
349 | INIT_LIST_HEAD(&ucontext->qp_list); | |
350 | INIT_LIST_HEAD(&ucontext->srq_list); | |
351 | INIT_LIST_HEAD(&ucontext->ah_list); | |
f213c052 | 352 | INIT_LIST_HEAD(&ucontext->wq_list); |
de019a94 | 353 | INIT_LIST_HEAD(&ucontext->rwq_ind_tbl_list); |
53d0bd1e | 354 | INIT_LIST_HEAD(&ucontext->xrcd_list); |
436f2ad0 | 355 | INIT_LIST_HEAD(&ucontext->rule_list); |
8ada2c1c SR |
356 | rcu_read_lock(); |
357 | ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID); | |
358 | rcu_read_unlock(); | |
f7c6a7b5 | 359 | ucontext->closing = 0; |
bc38a6ab | 360 | |
882214e2 HE |
361 | #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING |
362 | ucontext->umem_tree = RB_ROOT; | |
363 | init_rwsem(&ucontext->umem_rwsem); | |
364 | ucontext->odp_mrs_count = 0; | |
365 | INIT_LIST_HEAD(&ucontext->no_private_counters); | |
366 | ||
86bee4c9 | 367 | if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) |
882214e2 HE |
368 | ucontext->invalidate_range = NULL; |
369 | ||
370 | #endif | |
371 | ||
6b73597e RD |
372 | resp.num_comp_vectors = file->device->num_comp_vectors; |
373 | ||
da183c7a | 374 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
375 | if (ret < 0) |
376 | goto err_free; | |
377 | resp.async_fd = ret; | |
378 | ||
057aec0d | 379 | filp = ib_uverbs_alloc_event_file(file, ib_dev, 1); |
6b73597e RD |
380 | if (IS_ERR(filp)) { |
381 | ret = PTR_ERR(filp); | |
b1e4594b | 382 | goto err_fd; |
6b73597e | 383 | } |
bc38a6ab RD |
384 | |
385 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
386 | &resp, sizeof resp)) { |
387 | ret = -EFAULT; | |
6b73597e | 388 | goto err_file; |
63c47c28 RD |
389 | } |
390 | ||
70a30e16 | 391 | file->ucontext = ucontext; |
6b73597e RD |
392 | |
393 | fd_install(resp.async_fd, filp); | |
394 | ||
95ed644f | 395 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
396 | |
397 | return in_len; | |
398 | ||
6b73597e | 399 | err_file: |
03c40442 | 400 | ib_uverbs_free_async_event_file(file); |
6b73597e RD |
401 | fput(filp); |
402 | ||
b1e4594b AV |
403 | err_fd: |
404 | put_unused_fd(resp.async_fd); | |
405 | ||
63c47c28 | 406 | err_free: |
8ada2c1c | 407 | put_pid(ucontext->tgid); |
057aec0d | 408 | ib_dev->dealloc_ucontext(ucontext); |
bc38a6ab | 409 | |
63c47c28 | 410 | err: |
95ed644f | 411 | mutex_unlock(&file->mutex); |
63c47c28 | 412 | return ret; |
bc38a6ab RD |
413 | } |
414 | ||
02d1aa7a | 415 | static void copy_query_dev_fields(struct ib_uverbs_file *file, |
057aec0d | 416 | struct ib_device *ib_dev, |
02d1aa7a EC |
417 | struct ib_uverbs_query_device_resp *resp, |
418 | struct ib_device_attr *attr) | |
419 | { | |
420 | resp->fw_ver = attr->fw_ver; | |
057aec0d | 421 | resp->node_guid = ib_dev->node_guid; |
02d1aa7a EC |
422 | resp->sys_image_guid = attr->sys_image_guid; |
423 | resp->max_mr_size = attr->max_mr_size; | |
424 | resp->page_size_cap = attr->page_size_cap; | |
425 | resp->vendor_id = attr->vendor_id; | |
426 | resp->vendor_part_id = attr->vendor_part_id; | |
427 | resp->hw_ver = attr->hw_ver; | |
428 | resp->max_qp = attr->max_qp; | |
429 | resp->max_qp_wr = attr->max_qp_wr; | |
fb532d6a | 430 | resp->device_cap_flags = lower_32_bits(attr->device_cap_flags); |
02d1aa7a EC |
431 | resp->max_sge = attr->max_sge; |
432 | resp->max_sge_rd = attr->max_sge_rd; | |
433 | resp->max_cq = attr->max_cq; | |
434 | resp->max_cqe = attr->max_cqe; | |
435 | resp->max_mr = attr->max_mr; | |
436 | resp->max_pd = attr->max_pd; | |
437 | resp->max_qp_rd_atom = attr->max_qp_rd_atom; | |
438 | resp->max_ee_rd_atom = attr->max_ee_rd_atom; | |
439 | resp->max_res_rd_atom = attr->max_res_rd_atom; | |
440 | resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; | |
441 | resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; | |
442 | resp->atomic_cap = attr->atomic_cap; | |
443 | resp->max_ee = attr->max_ee; | |
444 | resp->max_rdd = attr->max_rdd; | |
445 | resp->max_mw = attr->max_mw; | |
446 | resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; | |
447 | resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; | |
448 | resp->max_mcast_grp = attr->max_mcast_grp; | |
449 | resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; | |
450 | resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; | |
451 | resp->max_ah = attr->max_ah; | |
452 | resp->max_fmr = attr->max_fmr; | |
453 | resp->max_map_per_fmr = attr->max_map_per_fmr; | |
454 | resp->max_srq = attr->max_srq; | |
455 | resp->max_srq_wr = attr->max_srq_wr; | |
456 | resp->max_srq_sge = attr->max_srq_sge; | |
457 | resp->max_pkeys = attr->max_pkeys; | |
458 | resp->local_ca_ack_delay = attr->local_ca_ack_delay; | |
057aec0d | 459 | resp->phys_port_cnt = ib_dev->phys_port_cnt; |
02d1aa7a EC |
460 | } |
461 | ||
bc38a6ab | 462 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, |
057aec0d | 463 | struct ib_device *ib_dev, |
bc38a6ab RD |
464 | const char __user *buf, |
465 | int in_len, int out_len) | |
466 | { | |
467 | struct ib_uverbs_query_device cmd; | |
468 | struct ib_uverbs_query_device_resp resp; | |
bc38a6ab RD |
469 | |
470 | if (out_len < sizeof resp) | |
471 | return -ENOSPC; | |
472 | ||
473 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
474 | return -EFAULT; | |
475 | ||
bc38a6ab | 476 | memset(&resp, 0, sizeof resp); |
86bee4c9 | 477 | copy_query_dev_fields(file, ib_dev, &resp, &ib_dev->attrs); |
bc38a6ab RD |
478 | |
479 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
480 | &resp, sizeof resp)) | |
481 | return -EFAULT; | |
482 | ||
483 | return in_len; | |
484 | } | |
485 | ||
486 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
057aec0d | 487 | struct ib_device *ib_dev, |
bc38a6ab RD |
488 | const char __user *buf, |
489 | int in_len, int out_len) | |
490 | { | |
491 | struct ib_uverbs_query_port cmd; | |
492 | struct ib_uverbs_query_port_resp resp; | |
493 | struct ib_port_attr attr; | |
494 | int ret; | |
495 | ||
496 | if (out_len < sizeof resp) | |
497 | return -ENOSPC; | |
498 | ||
499 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
500 | return -EFAULT; | |
501 | ||
057aec0d | 502 | ret = ib_query_port(ib_dev, cmd.port_num, &attr); |
bc38a6ab RD |
503 | if (ret) |
504 | return ret; | |
505 | ||
506 | memset(&resp, 0, sizeof resp); | |
507 | ||
508 | resp.state = attr.state; | |
509 | resp.max_mtu = attr.max_mtu; | |
510 | resp.active_mtu = attr.active_mtu; | |
511 | resp.gid_tbl_len = attr.gid_tbl_len; | |
512 | resp.port_cap_flags = attr.port_cap_flags; | |
513 | resp.max_msg_sz = attr.max_msg_sz; | |
514 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
515 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
516 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
517 | resp.lid = attr.lid; | |
518 | resp.sm_lid = attr.sm_lid; | |
519 | resp.lmc = attr.lmc; | |
520 | resp.max_vl_num = attr.max_vl_num; | |
521 | resp.sm_sl = attr.sm_sl; | |
522 | resp.subnet_timeout = attr.subnet_timeout; | |
523 | resp.init_type_reply = attr.init_type_reply; | |
524 | resp.active_width = attr.active_width; | |
525 | resp.active_speed = attr.active_speed; | |
526 | resp.phys_state = attr.phys_state; | |
057aec0d | 527 | resp.link_layer = rdma_port_get_link_layer(ib_dev, |
2420b60b | 528 | cmd.port_num); |
bc38a6ab RD |
529 | |
530 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
531 | &resp, sizeof resp)) | |
532 | return -EFAULT; | |
533 | ||
534 | return in_len; | |
535 | } | |
536 | ||
bc38a6ab | 537 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
057aec0d | 538 | struct ib_device *ib_dev, |
bc38a6ab RD |
539 | const char __user *buf, |
540 | int in_len, int out_len) | |
541 | { | |
542 | struct ib_uverbs_alloc_pd cmd; | |
543 | struct ib_uverbs_alloc_pd_resp resp; | |
544 | struct ib_udata udata; | |
545 | struct ib_uobject *uobj; | |
546 | struct ib_pd *pd; | |
547 | int ret; | |
548 | ||
549 | if (out_len < sizeof resp) | |
550 | return -ENOSPC; | |
551 | ||
552 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
553 | return -EFAULT; | |
554 | ||
555 | INIT_UDATA(&udata, buf + sizeof cmd, | |
556 | (unsigned long) cmd.response + sizeof resp, | |
557 | in_len - sizeof cmd, out_len - sizeof resp); | |
558 | ||
559 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
560 | if (!uobj) | |
561 | return -ENOMEM; | |
562 | ||
3bea57a5 | 563 | init_uobj(uobj, 0, file->ucontext, &pd_lock_class); |
9ead190b | 564 | down_write(&uobj->mutex); |
bc38a6ab | 565 | |
057aec0d | 566 | pd = ib_dev->alloc_pd(ib_dev, file->ucontext, &udata); |
bc38a6ab RD |
567 | if (IS_ERR(pd)) { |
568 | ret = PTR_ERR(pd); | |
569 | goto err; | |
570 | } | |
571 | ||
057aec0d | 572 | pd->device = ib_dev; |
bc38a6ab | 573 | pd->uobject = uobj; |
50d46335 | 574 | pd->__internal_mr = NULL; |
bc38a6ab RD |
575 | atomic_set(&pd->usecnt, 0); |
576 | ||
9ead190b RD |
577 | uobj->object = pd; |
578 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 579 | if (ret) |
9ead190b | 580 | goto err_idr; |
bc38a6ab RD |
581 | |
582 | memset(&resp, 0, sizeof resp); | |
583 | resp.pd_handle = uobj->id; | |
584 | ||
585 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
586 | &resp, sizeof resp)) { | |
587 | ret = -EFAULT; | |
9ead190b | 588 | goto err_copy; |
bc38a6ab RD |
589 | } |
590 | ||
95ed644f | 591 | mutex_lock(&file->mutex); |
eb9d3cd5 | 592 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 593 | mutex_unlock(&file->mutex); |
bc38a6ab | 594 | |
9ead190b RD |
595 | uobj->live = 1; |
596 | ||
597 | up_write(&uobj->mutex); | |
bc38a6ab | 598 | |
eb9d3cd5 RD |
599 | return in_len; |
600 | ||
9ead190b RD |
601 | err_copy: |
602 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 603 | |
9ead190b | 604 | err_idr: |
bc38a6ab RD |
605 | ib_dealloc_pd(pd); |
606 | ||
607 | err: | |
9ead190b | 608 | put_uobj_write(uobj); |
bc38a6ab RD |
609 | return ret; |
610 | } | |
611 | ||
612 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
057aec0d | 613 | struct ib_device *ib_dev, |
bc38a6ab RD |
614 | const char __user *buf, |
615 | int in_len, int out_len) | |
616 | { | |
617 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 618 | struct ib_uobject *uobj; |
7dd78647 | 619 | struct ib_pd *pd; |
9ead190b | 620 | int ret; |
bc38a6ab RD |
621 | |
622 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
623 | return -EFAULT; | |
624 | ||
9ead190b RD |
625 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
626 | if (!uobj) | |
627 | return -EINVAL; | |
7dd78647 | 628 | pd = uobj->object; |
bc38a6ab | 629 | |
7dd78647 JG |
630 | if (atomic_read(&pd->usecnt)) { |
631 | ret = -EBUSY; | |
632 | goto err_put; | |
633 | } | |
bc38a6ab | 634 | |
7dd78647 JG |
635 | ret = pd->device->dealloc_pd(uobj->object); |
636 | WARN_ONCE(ret, "Infiniband HW driver failed dealloc_pd"); | |
bc38a6ab | 637 | if (ret) |
7dd78647 JG |
638 | goto err_put; |
639 | ||
640 | uobj->live = 0; | |
641 | put_uobj_write(uobj); | |
bc38a6ab | 642 | |
9ead190b | 643 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 644 | |
95ed644f | 645 | mutex_lock(&file->mutex); |
bc38a6ab | 646 | list_del(&uobj->list); |
95ed644f | 647 | mutex_unlock(&file->mutex); |
bc38a6ab | 648 | |
9ead190b | 649 | put_uobj(uobj); |
bc38a6ab | 650 | |
9ead190b | 651 | return in_len; |
7dd78647 JG |
652 | |
653 | err_put: | |
654 | put_uobj_write(uobj); | |
655 | return ret; | |
bc38a6ab RD |
656 | } |
657 | ||
53d0bd1e SH |
658 | struct xrcd_table_entry { |
659 | struct rb_node node; | |
660 | struct ib_xrcd *xrcd; | |
661 | struct inode *inode; | |
662 | }; | |
663 | ||
664 | static int xrcd_table_insert(struct ib_uverbs_device *dev, | |
665 | struct inode *inode, | |
666 | struct ib_xrcd *xrcd) | |
667 | { | |
668 | struct xrcd_table_entry *entry, *scan; | |
669 | struct rb_node **p = &dev->xrcd_tree.rb_node; | |
670 | struct rb_node *parent = NULL; | |
671 | ||
672 | entry = kmalloc(sizeof *entry, GFP_KERNEL); | |
673 | if (!entry) | |
674 | return -ENOMEM; | |
675 | ||
676 | entry->xrcd = xrcd; | |
677 | entry->inode = inode; | |
678 | ||
679 | while (*p) { | |
680 | parent = *p; | |
681 | scan = rb_entry(parent, struct xrcd_table_entry, node); | |
682 | ||
683 | if (inode < scan->inode) { | |
684 | p = &(*p)->rb_left; | |
685 | } else if (inode > scan->inode) { | |
686 | p = &(*p)->rb_right; | |
687 | } else { | |
688 | kfree(entry); | |
689 | return -EEXIST; | |
690 | } | |
691 | } | |
692 | ||
693 | rb_link_node(&entry->node, parent, p); | |
694 | rb_insert_color(&entry->node, &dev->xrcd_tree); | |
695 | igrab(inode); | |
696 | return 0; | |
697 | } | |
698 | ||
699 | static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, | |
700 | struct inode *inode) | |
701 | { | |
702 | struct xrcd_table_entry *entry; | |
703 | struct rb_node *p = dev->xrcd_tree.rb_node; | |
704 | ||
705 | while (p) { | |
706 | entry = rb_entry(p, struct xrcd_table_entry, node); | |
707 | ||
708 | if (inode < entry->inode) | |
709 | p = p->rb_left; | |
710 | else if (inode > entry->inode) | |
711 | p = p->rb_right; | |
712 | else | |
713 | return entry; | |
714 | } | |
715 | ||
716 | return NULL; | |
717 | } | |
718 | ||
719 | static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) | |
720 | { | |
721 | struct xrcd_table_entry *entry; | |
722 | ||
723 | entry = xrcd_table_search(dev, inode); | |
724 | if (!entry) | |
725 | return NULL; | |
726 | ||
727 | return entry->xrcd; | |
728 | } | |
729 | ||
730 | static void xrcd_table_delete(struct ib_uverbs_device *dev, | |
731 | struct inode *inode) | |
732 | { | |
733 | struct xrcd_table_entry *entry; | |
734 | ||
735 | entry = xrcd_table_search(dev, inode); | |
736 | if (entry) { | |
737 | iput(inode); | |
738 | rb_erase(&entry->node, &dev->xrcd_tree); | |
739 | kfree(entry); | |
740 | } | |
741 | } | |
742 | ||
743 | ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, | |
057aec0d | 744 | struct ib_device *ib_dev, |
53d0bd1e SH |
745 | const char __user *buf, int in_len, |
746 | int out_len) | |
747 | { | |
748 | struct ib_uverbs_open_xrcd cmd; | |
749 | struct ib_uverbs_open_xrcd_resp resp; | |
750 | struct ib_udata udata; | |
751 | struct ib_uxrcd_object *obj; | |
752 | struct ib_xrcd *xrcd = NULL; | |
2903ff01 | 753 | struct fd f = {NULL, 0}; |
53d0bd1e | 754 | struct inode *inode = NULL; |
2903ff01 | 755 | int ret = 0; |
53d0bd1e SH |
756 | int new_xrcd = 0; |
757 | ||
758 | if (out_len < sizeof resp) | |
759 | return -ENOSPC; | |
760 | ||
761 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
762 | return -EFAULT; | |
763 | ||
764 | INIT_UDATA(&udata, buf + sizeof cmd, | |
765 | (unsigned long) cmd.response + sizeof resp, | |
766 | in_len - sizeof cmd, out_len - sizeof resp); | |
767 | ||
768 | mutex_lock(&file->device->xrcd_tree_mutex); | |
769 | ||
770 | if (cmd.fd != -1) { | |
771 | /* search for file descriptor */ | |
2903ff01 AV |
772 | f = fdget(cmd.fd); |
773 | if (!f.file) { | |
53d0bd1e SH |
774 | ret = -EBADF; |
775 | goto err_tree_mutex_unlock; | |
776 | } | |
777 | ||
496ad9aa | 778 | inode = file_inode(f.file); |
53d0bd1e SH |
779 | xrcd = find_xrcd(file->device, inode); |
780 | if (!xrcd && !(cmd.oflags & O_CREAT)) { | |
781 | /* no file descriptor. Need CREATE flag */ | |
782 | ret = -EAGAIN; | |
783 | goto err_tree_mutex_unlock; | |
784 | } | |
785 | ||
786 | if (xrcd && cmd.oflags & O_EXCL) { | |
787 | ret = -EINVAL; | |
788 | goto err_tree_mutex_unlock; | |
789 | } | |
790 | } | |
791 | ||
792 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
793 | if (!obj) { | |
794 | ret = -ENOMEM; | |
795 | goto err_tree_mutex_unlock; | |
796 | } | |
797 | ||
3bea57a5 | 798 | init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_class); |
53d0bd1e SH |
799 | |
800 | down_write(&obj->uobject.mutex); | |
801 | ||
802 | if (!xrcd) { | |
057aec0d | 803 | xrcd = ib_dev->alloc_xrcd(ib_dev, file->ucontext, &udata); |
53d0bd1e SH |
804 | if (IS_ERR(xrcd)) { |
805 | ret = PTR_ERR(xrcd); | |
806 | goto err; | |
807 | } | |
808 | ||
809 | xrcd->inode = inode; | |
057aec0d | 810 | xrcd->device = ib_dev; |
53d0bd1e SH |
811 | atomic_set(&xrcd->usecnt, 0); |
812 | mutex_init(&xrcd->tgt_qp_mutex); | |
813 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
814 | new_xrcd = 1; | |
815 | } | |
816 | ||
817 | atomic_set(&obj->refcnt, 0); | |
818 | obj->uobject.object = xrcd; | |
819 | ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
820 | if (ret) | |
821 | goto err_idr; | |
822 | ||
823 | memset(&resp, 0, sizeof resp); | |
824 | resp.xrcd_handle = obj->uobject.id; | |
825 | ||
826 | if (inode) { | |
827 | if (new_xrcd) { | |
828 | /* create new inode/xrcd table entry */ | |
829 | ret = xrcd_table_insert(file->device, inode, xrcd); | |
830 | if (ret) | |
831 | goto err_insert_xrcd; | |
832 | } | |
833 | atomic_inc(&xrcd->usecnt); | |
834 | } | |
835 | ||
836 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
837 | &resp, sizeof resp)) { | |
838 | ret = -EFAULT; | |
839 | goto err_copy; | |
840 | } | |
841 | ||
2903ff01 AV |
842 | if (f.file) |
843 | fdput(f); | |
53d0bd1e SH |
844 | |
845 | mutex_lock(&file->mutex); | |
846 | list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list); | |
847 | mutex_unlock(&file->mutex); | |
848 | ||
849 | obj->uobject.live = 1; | |
850 | up_write(&obj->uobject.mutex); | |
851 | ||
852 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
853 | return in_len; | |
854 | ||
855 | err_copy: | |
856 | if (inode) { | |
857 | if (new_xrcd) | |
858 | xrcd_table_delete(file->device, inode); | |
859 | atomic_dec(&xrcd->usecnt); | |
860 | } | |
861 | ||
862 | err_insert_xrcd: | |
863 | idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
864 | ||
865 | err_idr: | |
866 | ib_dealloc_xrcd(xrcd); | |
867 | ||
868 | err: | |
869 | put_uobj_write(&obj->uobject); | |
870 | ||
871 | err_tree_mutex_unlock: | |
2903ff01 AV |
872 | if (f.file) |
873 | fdput(f); | |
53d0bd1e SH |
874 | |
875 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
876 | ||
877 | return ret; | |
878 | } | |
879 | ||
880 | ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, | |
057aec0d | 881 | struct ib_device *ib_dev, |
53d0bd1e SH |
882 | const char __user *buf, int in_len, |
883 | int out_len) | |
884 | { | |
885 | struct ib_uverbs_close_xrcd cmd; | |
886 | struct ib_uobject *uobj; | |
887 | struct ib_xrcd *xrcd = NULL; | |
888 | struct inode *inode = NULL; | |
889 | struct ib_uxrcd_object *obj; | |
890 | int live; | |
891 | int ret = 0; | |
892 | ||
893 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
894 | return -EFAULT; | |
895 | ||
896 | mutex_lock(&file->device->xrcd_tree_mutex); | |
897 | uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext); | |
898 | if (!uobj) { | |
899 | ret = -EINVAL; | |
900 | goto out; | |
901 | } | |
902 | ||
903 | xrcd = uobj->object; | |
904 | inode = xrcd->inode; | |
905 | obj = container_of(uobj, struct ib_uxrcd_object, uobject); | |
906 | if (atomic_read(&obj->refcnt)) { | |
907 | put_uobj_write(uobj); | |
908 | ret = -EBUSY; | |
909 | goto out; | |
910 | } | |
911 | ||
912 | if (!inode || atomic_dec_and_test(&xrcd->usecnt)) { | |
913 | ret = ib_dealloc_xrcd(uobj->object); | |
914 | if (!ret) | |
915 | uobj->live = 0; | |
916 | } | |
917 | ||
918 | live = uobj->live; | |
919 | if (inode && ret) | |
920 | atomic_inc(&xrcd->usecnt); | |
921 | ||
922 | put_uobj_write(uobj); | |
923 | ||
924 | if (ret) | |
925 | goto out; | |
926 | ||
927 | if (inode && !live) | |
928 | xrcd_table_delete(file->device, inode); | |
929 | ||
930 | idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj); | |
931 | mutex_lock(&file->mutex); | |
932 | list_del(&uobj->list); | |
933 | mutex_unlock(&file->mutex); | |
934 | ||
935 | put_uobj(uobj); | |
936 | ret = in_len; | |
937 | ||
938 | out: | |
939 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
940 | return ret; | |
941 | } | |
942 | ||
943 | void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, | |
944 | struct ib_xrcd *xrcd) | |
945 | { | |
946 | struct inode *inode; | |
947 | ||
948 | inode = xrcd->inode; | |
949 | if (inode && !atomic_dec_and_test(&xrcd->usecnt)) | |
950 | return; | |
951 | ||
952 | ib_dealloc_xrcd(xrcd); | |
953 | ||
954 | if (inode) | |
955 | xrcd_table_delete(dev, inode); | |
956 | } | |
957 | ||
bc38a6ab | 958 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, |
057aec0d | 959 | struct ib_device *ib_dev, |
bc38a6ab RD |
960 | const char __user *buf, int in_len, |
961 | int out_len) | |
962 | { | |
963 | struct ib_uverbs_reg_mr cmd; | |
964 | struct ib_uverbs_reg_mr_resp resp; | |
965 | struct ib_udata udata; | |
f7c6a7b5 | 966 | struct ib_uobject *uobj; |
bc38a6ab RD |
967 | struct ib_pd *pd; |
968 | struct ib_mr *mr; | |
969 | int ret; | |
970 | ||
971 | if (out_len < sizeof resp) | |
972 | return -ENOSPC; | |
973 | ||
974 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
975 | return -EFAULT; | |
976 | ||
977 | INIT_UDATA(&udata, buf + sizeof cmd, | |
978 | (unsigned long) cmd.response + sizeof resp, | |
979 | in_len - sizeof cmd, out_len - sizeof resp); | |
980 | ||
981 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
982 | return -EINVAL; | |
983 | ||
1c636f80 EC |
984 | ret = ib_check_mr_access(cmd.access_flags); |
985 | if (ret) | |
986 | return ret; | |
f575394f | 987 | |
f7c6a7b5 RD |
988 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
989 | if (!uobj) | |
bc38a6ab RD |
990 | return -ENOMEM; |
991 | ||
3bea57a5 | 992 | init_uobj(uobj, 0, file->ucontext, &mr_lock_class); |
f7c6a7b5 | 993 | down_write(&uobj->mutex); |
bc38a6ab | 994 | |
9ead190b | 995 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
aaf1aef5 RD |
996 | if (!pd) { |
997 | ret = -EINVAL; | |
f7c6a7b5 | 998 | goto err_free; |
aaf1aef5 | 999 | } |
bc38a6ab | 1000 | |
860f10a7 | 1001 | if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { |
86bee4c9 OG |
1002 | if (!(pd->device->attrs.device_cap_flags & |
1003 | IB_DEVICE_ON_DEMAND_PAGING)) { | |
860f10a7 SG |
1004 | pr_debug("ODP support not available\n"); |
1005 | ret = -EINVAL; | |
1006 | goto err_put; | |
1007 | } | |
1008 | } | |
1009 | ||
f7c6a7b5 RD |
1010 | mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
1011 | cmd.access_flags, &udata); | |
bc38a6ab RD |
1012 | if (IS_ERR(mr)) { |
1013 | ret = PTR_ERR(mr); | |
9ead190b | 1014 | goto err_put; |
bc38a6ab RD |
1015 | } |
1016 | ||
1017 | mr->device = pd->device; | |
1018 | mr->pd = pd; | |
f7c6a7b5 | 1019 | mr->uobject = uobj; |
bc38a6ab | 1020 | atomic_inc(&pd->usecnt); |
bc38a6ab | 1021 | |
f7c6a7b5 RD |
1022 | uobj->object = mr; |
1023 | ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); | |
bc38a6ab RD |
1024 | if (ret) |
1025 | goto err_unreg; | |
1026 | ||
9ead190b RD |
1027 | memset(&resp, 0, sizeof resp); |
1028 | resp.lkey = mr->lkey; | |
1029 | resp.rkey = mr->rkey; | |
f7c6a7b5 | 1030 | resp.mr_handle = uobj->id; |
bc38a6ab | 1031 | |
bc38a6ab RD |
1032 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1033 | &resp, sizeof resp)) { | |
1034 | ret = -EFAULT; | |
9ead190b | 1035 | goto err_copy; |
bc38a6ab RD |
1036 | } |
1037 | ||
9ead190b RD |
1038 | put_pd_read(pd); |
1039 | ||
95ed644f | 1040 | mutex_lock(&file->mutex); |
f7c6a7b5 | 1041 | list_add_tail(&uobj->list, &file->ucontext->mr_list); |
95ed644f | 1042 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1043 | |
f7c6a7b5 | 1044 | uobj->live = 1; |
9ead190b | 1045 | |
f7c6a7b5 | 1046 | up_write(&uobj->mutex); |
bc38a6ab RD |
1047 | |
1048 | return in_len; | |
1049 | ||
9ead190b | 1050 | err_copy: |
f7c6a7b5 | 1051 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab RD |
1052 | |
1053 | err_unreg: | |
1054 | ib_dereg_mr(mr); | |
1055 | ||
9ead190b RD |
1056 | err_put: |
1057 | put_pd_read(pd); | |
bc38a6ab | 1058 | |
bc38a6ab | 1059 | err_free: |
f7c6a7b5 | 1060 | put_uobj_write(uobj); |
bc38a6ab RD |
1061 | return ret; |
1062 | } | |
1063 | ||
7e6edb9b | 1064 | ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file, |
057aec0d | 1065 | struct ib_device *ib_dev, |
7e6edb9b MB |
1066 | const char __user *buf, int in_len, |
1067 | int out_len) | |
1068 | { | |
1069 | struct ib_uverbs_rereg_mr cmd; | |
1070 | struct ib_uverbs_rereg_mr_resp resp; | |
1071 | struct ib_udata udata; | |
1072 | struct ib_pd *pd = NULL; | |
1073 | struct ib_mr *mr; | |
1074 | struct ib_pd *old_pd; | |
1075 | int ret; | |
1076 | struct ib_uobject *uobj; | |
1077 | ||
1078 | if (out_len < sizeof(resp)) | |
1079 | return -ENOSPC; | |
1080 | ||
1081 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1082 | return -EFAULT; | |
1083 | ||
1084 | INIT_UDATA(&udata, buf + sizeof(cmd), | |
1085 | (unsigned long) cmd.response + sizeof(resp), | |
1086 | in_len - sizeof(cmd), out_len - sizeof(resp)); | |
1087 | ||
1088 | if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) | |
1089 | return -EINVAL; | |
1090 | ||
1091 | if ((cmd.flags & IB_MR_REREG_TRANS) && | |
1092 | (!cmd.start || !cmd.hca_va || 0 >= cmd.length || | |
1093 | (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) | |
1094 | return -EINVAL; | |
1095 | ||
1096 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, | |
1097 | file->ucontext); | |
1098 | ||
1099 | if (!uobj) | |
1100 | return -EINVAL; | |
1101 | ||
1102 | mr = uobj->object; | |
1103 | ||
1104 | if (cmd.flags & IB_MR_REREG_ACCESS) { | |
1105 | ret = ib_check_mr_access(cmd.access_flags); | |
1106 | if (ret) | |
1107 | goto put_uobjs; | |
1108 | } | |
1109 | ||
1110 | if (cmd.flags & IB_MR_REREG_PD) { | |
1111 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1112 | if (!pd) { | |
1113 | ret = -EINVAL; | |
1114 | goto put_uobjs; | |
1115 | } | |
1116 | } | |
1117 | ||
7e6edb9b MB |
1118 | old_pd = mr->pd; |
1119 | ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start, | |
1120 | cmd.length, cmd.hca_va, | |
1121 | cmd.access_flags, pd, &udata); | |
1122 | if (!ret) { | |
1123 | if (cmd.flags & IB_MR_REREG_PD) { | |
1124 | atomic_inc(&pd->usecnt); | |
1125 | mr->pd = pd; | |
1126 | atomic_dec(&old_pd->usecnt); | |
1127 | } | |
1128 | } else { | |
1129 | goto put_uobj_pd; | |
1130 | } | |
1131 | ||
1132 | memset(&resp, 0, sizeof(resp)); | |
1133 | resp.lkey = mr->lkey; | |
1134 | resp.rkey = mr->rkey; | |
1135 | ||
1136 | if (copy_to_user((void __user *)(unsigned long)cmd.response, | |
1137 | &resp, sizeof(resp))) | |
1138 | ret = -EFAULT; | |
1139 | else | |
1140 | ret = in_len; | |
1141 | ||
1142 | put_uobj_pd: | |
1143 | if (cmd.flags & IB_MR_REREG_PD) | |
1144 | put_pd_read(pd); | |
1145 | ||
1146 | put_uobjs: | |
1147 | ||
1148 | put_uobj_write(mr->uobject); | |
1149 | ||
1150 | return ret; | |
1151 | } | |
1152 | ||
bc38a6ab | 1153 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, |
057aec0d | 1154 | struct ib_device *ib_dev, |
bc38a6ab RD |
1155 | const char __user *buf, int in_len, |
1156 | int out_len) | |
1157 | { | |
1158 | struct ib_uverbs_dereg_mr cmd; | |
1159 | struct ib_mr *mr; | |
9ead190b | 1160 | struct ib_uobject *uobj; |
bc38a6ab RD |
1161 | int ret = -EINVAL; |
1162 | ||
1163 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1164 | return -EFAULT; | |
1165 | ||
9ead190b RD |
1166 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
1167 | if (!uobj) | |
1168 | return -EINVAL; | |
bc38a6ab | 1169 | |
f7c6a7b5 | 1170 | mr = uobj->object; |
bc38a6ab RD |
1171 | |
1172 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
1173 | if (!ret) |
1174 | uobj->live = 0; | |
1175 | ||
1176 | put_uobj_write(uobj); | |
1177 | ||
bc38a6ab | 1178 | if (ret) |
9ead190b | 1179 | return ret; |
bc38a6ab | 1180 | |
9ead190b | 1181 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 1182 | |
95ed644f | 1183 | mutex_lock(&file->mutex); |
9ead190b | 1184 | list_del(&uobj->list); |
95ed644f | 1185 | mutex_unlock(&file->mutex); |
bc38a6ab | 1186 | |
9ead190b | 1187 | put_uobj(uobj); |
bc38a6ab | 1188 | |
9ead190b | 1189 | return in_len; |
bc38a6ab RD |
1190 | } |
1191 | ||
6b52a12b | 1192 | ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file, |
057aec0d YH |
1193 | struct ib_device *ib_dev, |
1194 | const char __user *buf, int in_len, | |
1195 | int out_len) | |
6b52a12b SM |
1196 | { |
1197 | struct ib_uverbs_alloc_mw cmd; | |
1198 | struct ib_uverbs_alloc_mw_resp resp; | |
1199 | struct ib_uobject *uobj; | |
1200 | struct ib_pd *pd; | |
1201 | struct ib_mw *mw; | |
b2a239df | 1202 | struct ib_udata udata; |
6b52a12b SM |
1203 | int ret; |
1204 | ||
1205 | if (out_len < sizeof(resp)) | |
1206 | return -ENOSPC; | |
1207 | ||
1208 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1209 | return -EFAULT; | |
1210 | ||
1211 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
1212 | if (!uobj) | |
1213 | return -ENOMEM; | |
1214 | ||
1215 | init_uobj(uobj, 0, file->ucontext, &mw_lock_class); | |
1216 | down_write(&uobj->mutex); | |
1217 | ||
1218 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1219 | if (!pd) { | |
1220 | ret = -EINVAL; | |
1221 | goto err_free; | |
1222 | } | |
1223 | ||
b2a239df MB |
1224 | INIT_UDATA(&udata, buf + sizeof(cmd), |
1225 | (unsigned long)cmd.response + sizeof(resp), | |
1226 | in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), | |
1227 | out_len - sizeof(resp)); | |
1228 | ||
1229 | mw = pd->device->alloc_mw(pd, cmd.mw_type, &udata); | |
6b52a12b SM |
1230 | if (IS_ERR(mw)) { |
1231 | ret = PTR_ERR(mw); | |
1232 | goto err_put; | |
1233 | } | |
1234 | ||
1235 | mw->device = pd->device; | |
1236 | mw->pd = pd; | |
1237 | mw->uobject = uobj; | |
1238 | atomic_inc(&pd->usecnt); | |
1239 | ||
1240 | uobj->object = mw; | |
1241 | ret = idr_add_uobj(&ib_uverbs_mw_idr, uobj); | |
1242 | if (ret) | |
1243 | goto err_unalloc; | |
1244 | ||
1245 | memset(&resp, 0, sizeof(resp)); | |
1246 | resp.rkey = mw->rkey; | |
1247 | resp.mw_handle = uobj->id; | |
1248 | ||
1249 | if (copy_to_user((void __user *)(unsigned long)cmd.response, | |
1250 | &resp, sizeof(resp))) { | |
1251 | ret = -EFAULT; | |
1252 | goto err_copy; | |
1253 | } | |
1254 | ||
1255 | put_pd_read(pd); | |
1256 | ||
1257 | mutex_lock(&file->mutex); | |
1258 | list_add_tail(&uobj->list, &file->ucontext->mw_list); | |
1259 | mutex_unlock(&file->mutex); | |
1260 | ||
1261 | uobj->live = 1; | |
1262 | ||
1263 | up_write(&uobj->mutex); | |
1264 | ||
1265 | return in_len; | |
1266 | ||
1267 | err_copy: | |
1268 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1269 | ||
1270 | err_unalloc: | |
feb7c1e3 | 1271 | uverbs_dealloc_mw(mw); |
6b52a12b SM |
1272 | |
1273 | err_put: | |
1274 | put_pd_read(pd); | |
1275 | ||
1276 | err_free: | |
1277 | put_uobj_write(uobj); | |
1278 | return ret; | |
1279 | } | |
1280 | ||
1281 | ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, | |
057aec0d YH |
1282 | struct ib_device *ib_dev, |
1283 | const char __user *buf, int in_len, | |
1284 | int out_len) | |
6b52a12b SM |
1285 | { |
1286 | struct ib_uverbs_dealloc_mw cmd; | |
1287 | struct ib_mw *mw; | |
1288 | struct ib_uobject *uobj; | |
1289 | int ret = -EINVAL; | |
1290 | ||
1291 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1292 | return -EFAULT; | |
1293 | ||
1294 | uobj = idr_write_uobj(&ib_uverbs_mw_idr, cmd.mw_handle, file->ucontext); | |
1295 | if (!uobj) | |
1296 | return -EINVAL; | |
1297 | ||
1298 | mw = uobj->object; | |
1299 | ||
feb7c1e3 | 1300 | ret = uverbs_dealloc_mw(mw); |
6b52a12b SM |
1301 | if (!ret) |
1302 | uobj->live = 0; | |
1303 | ||
1304 | put_uobj_write(uobj); | |
1305 | ||
1306 | if (ret) | |
1307 | return ret; | |
1308 | ||
1309 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1310 | ||
1311 | mutex_lock(&file->mutex); | |
1312 | list_del(&uobj->list); | |
1313 | mutex_unlock(&file->mutex); | |
1314 | ||
1315 | put_uobj(uobj); | |
1316 | ||
1317 | return in_len; | |
1318 | } | |
1319 | ||
6b73597e | 1320 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
057aec0d | 1321 | struct ib_device *ib_dev, |
6b73597e RD |
1322 | const char __user *buf, int in_len, |
1323 | int out_len) | |
1324 | { | |
1325 | struct ib_uverbs_create_comp_channel cmd; | |
1326 | struct ib_uverbs_create_comp_channel_resp resp; | |
1327 | struct file *filp; | |
b1e4594b | 1328 | int ret; |
6b73597e RD |
1329 | |
1330 | if (out_len < sizeof resp) | |
1331 | return -ENOSPC; | |
1332 | ||
1333 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1334 | return -EFAULT; | |
1335 | ||
da183c7a | 1336 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
1337 | if (ret < 0) |
1338 | return ret; | |
1339 | resp.fd = ret; | |
1340 | ||
057aec0d | 1341 | filp = ib_uverbs_alloc_event_file(file, ib_dev, 0); |
b1e4594b AV |
1342 | if (IS_ERR(filp)) { |
1343 | put_unused_fd(resp.fd); | |
6b73597e | 1344 | return PTR_ERR(filp); |
b1e4594b | 1345 | } |
6b73597e RD |
1346 | |
1347 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1348 | &resp, sizeof resp)) { | |
1349 | put_unused_fd(resp.fd); | |
1350 | fput(filp); | |
1351 | return -EFAULT; | |
1352 | } | |
1353 | ||
1354 | fd_install(resp.fd, filp); | |
1355 | return in_len; | |
1356 | } | |
1357 | ||
565197dd | 1358 | static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, |
057aec0d | 1359 | struct ib_device *ib_dev, |
565197dd MB |
1360 | struct ib_udata *ucore, |
1361 | struct ib_udata *uhw, | |
1362 | struct ib_uverbs_ex_create_cq *cmd, | |
1363 | size_t cmd_sz, | |
1364 | int (*cb)(struct ib_uverbs_file *file, | |
1365 | struct ib_ucq_object *obj, | |
1366 | struct ib_uverbs_ex_create_cq_resp *resp, | |
1367 | struct ib_udata *udata, | |
1368 | void *context), | |
1369 | void *context) | |
bc38a6ab | 1370 | { |
9ead190b | 1371 | struct ib_ucq_object *obj; |
6b73597e | 1372 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
1373 | struct ib_cq *cq; |
1374 | int ret; | |
565197dd | 1375 | struct ib_uverbs_ex_create_cq_resp resp; |
bcf4c1ea | 1376 | struct ib_cq_init_attr attr = {}; |
bc38a6ab | 1377 | |
565197dd MB |
1378 | if (cmd->comp_vector >= file->device->num_comp_vectors) |
1379 | return ERR_PTR(-EINVAL); | |
bc38a6ab | 1380 | |
9ead190b RD |
1381 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1382 | if (!obj) | |
565197dd | 1383 | return ERR_PTR(-ENOMEM); |
bc38a6ab | 1384 | |
565197dd | 1385 | init_uobj(&obj->uobject, cmd->user_handle, file->ucontext, &cq_lock_class); |
9ead190b RD |
1386 | down_write(&obj->uobject.mutex); |
1387 | ||
565197dd MB |
1388 | if (cmd->comp_channel >= 0) { |
1389 | ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel); | |
ac4e7b35 JM |
1390 | if (!ev_file) { |
1391 | ret = -EINVAL; | |
1392 | goto err; | |
1393 | } | |
1394 | } | |
1395 | ||
9ead190b RD |
1396 | obj->uverbs_file = file; |
1397 | obj->comp_events_reported = 0; | |
1398 | obj->async_events_reported = 0; | |
1399 | INIT_LIST_HEAD(&obj->comp_list); | |
1400 | INIT_LIST_HEAD(&obj->async_list); | |
bc38a6ab | 1401 | |
565197dd MB |
1402 | attr.cqe = cmd->cqe; |
1403 | attr.comp_vector = cmd->comp_vector; | |
1404 | ||
1405 | if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags)) | |
1406 | attr.flags = cmd->flags; | |
1407 | ||
057aec0d | 1408 | cq = ib_dev->create_cq(ib_dev, &attr, |
565197dd | 1409 | file->ucontext, uhw); |
bc38a6ab RD |
1410 | if (IS_ERR(cq)) { |
1411 | ret = PTR_ERR(cq); | |
9ead190b | 1412 | goto err_file; |
bc38a6ab RD |
1413 | } |
1414 | ||
057aec0d | 1415 | cq->device = ib_dev; |
9ead190b | 1416 | cq->uobject = &obj->uobject; |
bc38a6ab RD |
1417 | cq->comp_handler = ib_uverbs_comp_handler; |
1418 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 1419 | cq->cq_context = ev_file; |
bc38a6ab RD |
1420 | atomic_set(&cq->usecnt, 0); |
1421 | ||
9ead190b RD |
1422 | obj->uobject.object = cq; |
1423 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
bc38a6ab | 1424 | if (ret) |
9ead190b | 1425 | goto err_free; |
bc38a6ab RD |
1426 | |
1427 | memset(&resp, 0, sizeof resp); | |
565197dd MB |
1428 | resp.base.cq_handle = obj->uobject.id; |
1429 | resp.base.cqe = cq->cqe; | |
bc38a6ab | 1430 | |
565197dd MB |
1431 | resp.response_length = offsetof(typeof(resp), response_length) + |
1432 | sizeof(resp.response_length); | |
1433 | ||
1434 | ret = cb(file, obj, &resp, ucore, context); | |
1435 | if (ret) | |
1436 | goto err_cb; | |
bc38a6ab | 1437 | |
95ed644f | 1438 | mutex_lock(&file->mutex); |
9ead190b | 1439 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 1440 | mutex_unlock(&file->mutex); |
bc38a6ab | 1441 | |
9ead190b RD |
1442 | obj->uobject.live = 1; |
1443 | ||
1444 | up_write(&obj->uobject.mutex); | |
bc38a6ab | 1445 | |
565197dd | 1446 | return obj; |
eb9d3cd5 | 1447 | |
565197dd | 1448 | err_cb: |
9ead190b | 1449 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); |
eb9d3cd5 | 1450 | |
9ead190b | 1451 | err_free: |
bc38a6ab RD |
1452 | ib_destroy_cq(cq); |
1453 | ||
9ead190b | 1454 | err_file: |
ac4e7b35 | 1455 | if (ev_file) |
9ead190b RD |
1456 | ib_uverbs_release_ucq(file, ev_file, obj); |
1457 | ||
1458 | err: | |
1459 | put_uobj_write(&obj->uobject); | |
565197dd MB |
1460 | |
1461 | return ERR_PTR(ret); | |
1462 | } | |
1463 | ||
1464 | static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file, | |
1465 | struct ib_ucq_object *obj, | |
1466 | struct ib_uverbs_ex_create_cq_resp *resp, | |
1467 | struct ib_udata *ucore, void *context) | |
1468 | { | |
1469 | if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) | |
1470 | return -EFAULT; | |
1471 | ||
1472 | return 0; | |
1473 | } | |
1474 | ||
1475 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, | |
057aec0d | 1476 | struct ib_device *ib_dev, |
565197dd MB |
1477 | const char __user *buf, int in_len, |
1478 | int out_len) | |
1479 | { | |
1480 | struct ib_uverbs_create_cq cmd; | |
1481 | struct ib_uverbs_ex_create_cq cmd_ex; | |
1482 | struct ib_uverbs_create_cq_resp resp; | |
1483 | struct ib_udata ucore; | |
1484 | struct ib_udata uhw; | |
1485 | struct ib_ucq_object *obj; | |
1486 | ||
1487 | if (out_len < sizeof(resp)) | |
1488 | return -ENOSPC; | |
1489 | ||
1490 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1491 | return -EFAULT; | |
1492 | ||
5d1e6235 | 1493 | INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd), sizeof(resp)); |
565197dd MB |
1494 | |
1495 | INIT_UDATA(&uhw, buf + sizeof(cmd), | |
1496 | (unsigned long)cmd.response + sizeof(resp), | |
1497 | in_len - sizeof(cmd), out_len - sizeof(resp)); | |
1498 | ||
1499 | memset(&cmd_ex, 0, sizeof(cmd_ex)); | |
1500 | cmd_ex.user_handle = cmd.user_handle; | |
1501 | cmd_ex.cqe = cmd.cqe; | |
1502 | cmd_ex.comp_vector = cmd.comp_vector; | |
1503 | cmd_ex.comp_channel = cmd.comp_channel; | |
1504 | ||
057aec0d | 1505 | obj = create_cq(file, ib_dev, &ucore, &uhw, &cmd_ex, |
565197dd MB |
1506 | offsetof(typeof(cmd_ex), comp_channel) + |
1507 | sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb, | |
1508 | NULL); | |
1509 | ||
1510 | if (IS_ERR(obj)) | |
1511 | return PTR_ERR(obj); | |
1512 | ||
1513 | return in_len; | |
1514 | } | |
1515 | ||
1516 | static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file, | |
1517 | struct ib_ucq_object *obj, | |
1518 | struct ib_uverbs_ex_create_cq_resp *resp, | |
1519 | struct ib_udata *ucore, void *context) | |
1520 | { | |
1521 | if (ib_copy_to_udata(ucore, resp, resp->response_length)) | |
1522 | return -EFAULT; | |
1523 | ||
1524 | return 0; | |
1525 | } | |
1526 | ||
1527 | int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file, | |
057aec0d | 1528 | struct ib_device *ib_dev, |
565197dd MB |
1529 | struct ib_udata *ucore, |
1530 | struct ib_udata *uhw) | |
1531 | { | |
1532 | struct ib_uverbs_ex_create_cq_resp resp; | |
1533 | struct ib_uverbs_ex_create_cq cmd; | |
1534 | struct ib_ucq_object *obj; | |
1535 | int err; | |
1536 | ||
1537 | if (ucore->inlen < sizeof(cmd)) | |
1538 | return -EINVAL; | |
1539 | ||
1540 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); | |
1541 | if (err) | |
1542 | return err; | |
1543 | ||
1544 | if (cmd.comp_mask) | |
1545 | return -EINVAL; | |
1546 | ||
1547 | if (cmd.reserved) | |
1548 | return -EINVAL; | |
1549 | ||
1550 | if (ucore->outlen < (offsetof(typeof(resp), response_length) + | |
1551 | sizeof(resp.response_length))) | |
1552 | return -ENOSPC; | |
1553 | ||
057aec0d | 1554 | obj = create_cq(file, ib_dev, ucore, uhw, &cmd, |
565197dd MB |
1555 | min(ucore->inlen, sizeof(cmd)), |
1556 | ib_uverbs_ex_create_cq_cb, NULL); | |
1557 | ||
1558 | if (IS_ERR(obj)) | |
1559 | return PTR_ERR(obj); | |
1560 | ||
1561 | return 0; | |
bc38a6ab RD |
1562 | } |
1563 | ||
33b9b3ee | 1564 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
057aec0d | 1565 | struct ib_device *ib_dev, |
33b9b3ee RD |
1566 | const char __user *buf, int in_len, |
1567 | int out_len) | |
1568 | { | |
1569 | struct ib_uverbs_resize_cq cmd; | |
1570 | struct ib_uverbs_resize_cq_resp resp; | |
1571 | struct ib_udata udata; | |
1572 | struct ib_cq *cq; | |
1573 | int ret = -EINVAL; | |
1574 | ||
1575 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1576 | return -EFAULT; | |
1577 | ||
1578 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1579 | (unsigned long) cmd.response + sizeof resp, | |
1580 | in_len - sizeof cmd, out_len - sizeof resp); | |
1581 | ||
1ccf6aa1 | 1582 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
9ead190b RD |
1583 | if (!cq) |
1584 | return -EINVAL; | |
33b9b3ee RD |
1585 | |
1586 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
1587 | if (ret) | |
1588 | goto out; | |
1589 | ||
33b9b3ee RD |
1590 | resp.cqe = cq->cqe; |
1591 | ||
1592 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
64f817ba | 1593 | &resp, sizeof resp.cqe)) |
33b9b3ee RD |
1594 | ret = -EFAULT; |
1595 | ||
1596 | out: | |
9ead190b | 1597 | put_cq_read(cq); |
33b9b3ee RD |
1598 | |
1599 | return ret ? ret : in_len; | |
1600 | } | |
1601 | ||
7182afea DC |
1602 | static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) |
1603 | { | |
1604 | struct ib_uverbs_wc tmp; | |
1605 | ||
1606 | tmp.wr_id = wc->wr_id; | |
1607 | tmp.status = wc->status; | |
1608 | tmp.opcode = wc->opcode; | |
1609 | tmp.vendor_err = wc->vendor_err; | |
1610 | tmp.byte_len = wc->byte_len; | |
1611 | tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; | |
1612 | tmp.qp_num = wc->qp->qp_num; | |
1613 | tmp.src_qp = wc->src_qp; | |
1614 | tmp.wc_flags = wc->wc_flags; | |
1615 | tmp.pkey_index = wc->pkey_index; | |
1616 | tmp.slid = wc->slid; | |
1617 | tmp.sl = wc->sl; | |
1618 | tmp.dlid_path_bits = wc->dlid_path_bits; | |
1619 | tmp.port_num = wc->port_num; | |
1620 | tmp.reserved = 0; | |
1621 | ||
1622 | if (copy_to_user(dest, &tmp, sizeof tmp)) | |
1623 | return -EFAULT; | |
1624 | ||
1625 | return 0; | |
1626 | } | |
1627 | ||
67cdb40c | 1628 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
057aec0d | 1629 | struct ib_device *ib_dev, |
67cdb40c RD |
1630 | const char __user *buf, int in_len, |
1631 | int out_len) | |
1632 | { | |
1633 | struct ib_uverbs_poll_cq cmd; | |
7182afea DC |
1634 | struct ib_uverbs_poll_cq_resp resp; |
1635 | u8 __user *header_ptr; | |
1636 | u8 __user *data_ptr; | |
67cdb40c | 1637 | struct ib_cq *cq; |
7182afea DC |
1638 | struct ib_wc wc; |
1639 | int ret; | |
67cdb40c RD |
1640 | |
1641 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1642 | return -EFAULT; | |
1643 | ||
1ccf6aa1 | 1644 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
7182afea DC |
1645 | if (!cq) |
1646 | return -EINVAL; | |
67cdb40c | 1647 | |
7182afea DC |
1648 | /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
1649 | header_ptr = (void __user *)(unsigned long) cmd.response; | |
1650 | data_ptr = header_ptr + sizeof resp; | |
9ead190b | 1651 | |
7182afea DC |
1652 | memset(&resp, 0, sizeof resp); |
1653 | while (resp.count < cmd.ne) { | |
1654 | ret = ib_poll_cq(cq, 1, &wc); | |
1655 | if (ret < 0) | |
1656 | goto out_put; | |
1657 | if (!ret) | |
1658 | break; | |
1659 | ||
1660 | ret = copy_wc_to_user(data_ptr, &wc); | |
1661 | if (ret) | |
1662 | goto out_put; | |
1663 | ||
1664 | data_ptr += sizeof(struct ib_uverbs_wc); | |
1665 | ++resp.count; | |
67cdb40c RD |
1666 | } |
1667 | ||
7182afea | 1668 | if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
67cdb40c | 1669 | ret = -EFAULT; |
7182afea DC |
1670 | goto out_put; |
1671 | } | |
67cdb40c | 1672 | |
7182afea | 1673 | ret = in_len; |
67cdb40c | 1674 | |
7182afea DC |
1675 | out_put: |
1676 | put_cq_read(cq); | |
1677 | return ret; | |
67cdb40c RD |
1678 | } |
1679 | ||
1680 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
057aec0d | 1681 | struct ib_device *ib_dev, |
67cdb40c RD |
1682 | const char __user *buf, int in_len, |
1683 | int out_len) | |
1684 | { | |
1685 | struct ib_uverbs_req_notify_cq cmd; | |
1686 | struct ib_cq *cq; | |
67cdb40c RD |
1687 | |
1688 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1689 | return -EFAULT; | |
1690 | ||
1ccf6aa1 | 1691 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 1692 | if (!cq) |
9ead190b | 1693 | return -EINVAL; |
67cdb40c | 1694 | |
9ead190b RD |
1695 | ib_req_notify_cq(cq, cmd.solicited_only ? |
1696 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
1697 | ||
ab108676 | 1698 | put_cq_read(cq); |
9ead190b RD |
1699 | |
1700 | return in_len; | |
67cdb40c RD |
1701 | } |
1702 | ||
bc38a6ab | 1703 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
057aec0d | 1704 | struct ib_device *ib_dev, |
bc38a6ab RD |
1705 | const char __user *buf, int in_len, |
1706 | int out_len) | |
1707 | { | |
63aaf647 RD |
1708 | struct ib_uverbs_destroy_cq cmd; |
1709 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 1710 | struct ib_uobject *uobj; |
63aaf647 | 1711 | struct ib_cq *cq; |
9ead190b | 1712 | struct ib_ucq_object *obj; |
6b73597e | 1713 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 1714 | int ret = -EINVAL; |
bc38a6ab RD |
1715 | |
1716 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1717 | return -EFAULT; | |
1718 | ||
9ead190b RD |
1719 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
1720 | if (!uobj) | |
1721 | return -EINVAL; | |
1722 | cq = uobj->object; | |
1723 | ev_file = cq->cq_context; | |
1724 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 1725 | |
9ead190b RD |
1726 | ret = ib_destroy_cq(cq); |
1727 | if (!ret) | |
1728 | uobj->live = 0; | |
bc38a6ab | 1729 | |
9ead190b | 1730 | put_uobj_write(uobj); |
bc38a6ab | 1731 | |
bc38a6ab | 1732 | if (ret) |
9ead190b | 1733 | return ret; |
bc38a6ab | 1734 | |
9ead190b | 1735 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 1736 | |
95ed644f | 1737 | mutex_lock(&file->mutex); |
9ead190b | 1738 | list_del(&uobj->list); |
95ed644f | 1739 | mutex_unlock(&file->mutex); |
bc38a6ab | 1740 | |
9ead190b | 1741 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1742 | |
9ead190b RD |
1743 | memset(&resp, 0, sizeof resp); |
1744 | resp.comp_events_reported = obj->comp_events_reported; | |
1745 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1746 | |
9ead190b | 1747 | put_uobj(uobj); |
bc38a6ab | 1748 | |
63aaf647 RD |
1749 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1750 | &resp, sizeof resp)) | |
9ead190b | 1751 | return -EFAULT; |
bc38a6ab | 1752 | |
9ead190b | 1753 | return in_len; |
bc38a6ab RD |
1754 | } |
1755 | ||
6d8a7497 EBE |
1756 | static int create_qp(struct ib_uverbs_file *file, |
1757 | struct ib_udata *ucore, | |
1758 | struct ib_udata *uhw, | |
1759 | struct ib_uverbs_ex_create_qp *cmd, | |
1760 | size_t cmd_sz, | |
1761 | int (*cb)(struct ib_uverbs_file *file, | |
1762 | struct ib_uverbs_ex_create_qp_resp *resp, | |
1763 | struct ib_udata *udata), | |
1764 | void *context) | |
bc38a6ab | 1765 | { |
6d8a7497 EBE |
1766 | struct ib_uqp_object *obj; |
1767 | struct ib_device *device; | |
1768 | struct ib_pd *pd = NULL; | |
1769 | struct ib_xrcd *xrcd = NULL; | |
1770 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1771 | struct ib_cq *scq = NULL, *rcq = NULL; | |
1772 | struct ib_srq *srq = NULL; | |
1773 | struct ib_qp *qp; | |
1774 | char *buf; | |
c70285f8 | 1775 | struct ib_qp_init_attr attr = {}; |
6d8a7497 EBE |
1776 | struct ib_uverbs_ex_create_qp_resp resp; |
1777 | int ret; | |
c70285f8 YH |
1778 | struct ib_rwq_ind_table *ind_tbl = NULL; |
1779 | bool has_sq = true; | |
6d8a7497 EBE |
1780 | |
1781 | if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) | |
c938a616 OG |
1782 | return -EPERM; |
1783 | ||
846be90d | 1784 | obj = kzalloc(sizeof *obj, GFP_KERNEL); |
9ead190b | 1785 | if (!obj) |
bc38a6ab RD |
1786 | return -ENOMEM; |
1787 | ||
6d8a7497 EBE |
1788 | init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, |
1789 | &qp_lock_class); | |
9ead190b | 1790 | down_write(&obj->uevent.uobject.mutex); |
c70285f8 YH |
1791 | if (cmd_sz >= offsetof(typeof(*cmd), rwq_ind_tbl_handle) + |
1792 | sizeof(cmd->rwq_ind_tbl_handle) && | |
1793 | (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE)) { | |
1794 | ind_tbl = idr_read_rwq_indirection_table(cmd->rwq_ind_tbl_handle, | |
1795 | file->ucontext); | |
1796 | if (!ind_tbl) { | |
1797 | ret = -EINVAL; | |
1798 | goto err_put; | |
1799 | } | |
1800 | ||
1801 | attr.rwq_ind_tbl = ind_tbl; | |
1802 | } | |
1803 | ||
1804 | if ((cmd_sz >= offsetof(typeof(*cmd), reserved1) + | |
1805 | sizeof(cmd->reserved1)) && cmd->reserved1) { | |
1806 | ret = -EOPNOTSUPP; | |
1807 | goto err_put; | |
1808 | } | |
1809 | ||
1810 | if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) { | |
1811 | ret = -EINVAL; | |
1812 | goto err_put; | |
1813 | } | |
1814 | ||
1815 | if (ind_tbl && !cmd->max_send_wr) | |
1816 | has_sq = false; | |
bc38a6ab | 1817 | |
6d8a7497 EBE |
1818 | if (cmd->qp_type == IB_QPT_XRC_TGT) { |
1819 | xrcd = idr_read_xrcd(cmd->pd_handle, file->ucontext, | |
1820 | &xrcd_uobj); | |
b93f3c18 SH |
1821 | if (!xrcd) { |
1822 | ret = -EINVAL; | |
1823 | goto err_put; | |
1824 | } | |
1825 | device = xrcd->device; | |
9977f4f6 | 1826 | } else { |
6d8a7497 EBE |
1827 | if (cmd->qp_type == IB_QPT_XRC_INI) { |
1828 | cmd->max_recv_wr = 0; | |
1829 | cmd->max_recv_sge = 0; | |
b93f3c18 | 1830 | } else { |
6d8a7497 EBE |
1831 | if (cmd->is_srq) { |
1832 | srq = idr_read_srq(cmd->srq_handle, | |
1833 | file->ucontext); | |
b93f3c18 SH |
1834 | if (!srq || srq->srq_type != IB_SRQT_BASIC) { |
1835 | ret = -EINVAL; | |
1836 | goto err_put; | |
1837 | } | |
1838 | } | |
5909ce54 | 1839 | |
c70285f8 YH |
1840 | if (!ind_tbl) { |
1841 | if (cmd->recv_cq_handle != cmd->send_cq_handle) { | |
1842 | rcq = idr_read_cq(cmd->recv_cq_handle, | |
1843 | file->ucontext, 0); | |
1844 | if (!rcq) { | |
1845 | ret = -EINVAL; | |
1846 | goto err_put; | |
1847 | } | |
5909ce54 | 1848 | } |
9977f4f6 SH |
1849 | } |
1850 | } | |
5909ce54 | 1851 | |
c70285f8 YH |
1852 | if (has_sq) |
1853 | scq = idr_read_cq(cmd->send_cq_handle, file->ucontext, !!rcq); | |
1854 | if (!ind_tbl) | |
1855 | rcq = rcq ?: scq; | |
6d8a7497 | 1856 | pd = idr_read_pd(cmd->pd_handle, file->ucontext); |
c70285f8 | 1857 | if (!pd || (!scq && has_sq)) { |
5909ce54 RD |
1858 | ret = -EINVAL; |
1859 | goto err_put; | |
1860 | } | |
1861 | ||
b93f3c18 | 1862 | device = pd->device; |
9977f4f6 SH |
1863 | } |
1864 | ||
bc38a6ab RD |
1865 | attr.event_handler = ib_uverbs_qp_event_handler; |
1866 | attr.qp_context = file; | |
1867 | attr.send_cq = scq; | |
1868 | attr.recv_cq = rcq; | |
f520ba5a | 1869 | attr.srq = srq; |
b93f3c18 | 1870 | attr.xrcd = xrcd; |
6d8a7497 EBE |
1871 | attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR : |
1872 | IB_SIGNAL_REQ_WR; | |
1873 | attr.qp_type = cmd->qp_type; | |
b846f25a | 1874 | attr.create_flags = 0; |
bc38a6ab | 1875 | |
6d8a7497 EBE |
1876 | attr.cap.max_send_wr = cmd->max_send_wr; |
1877 | attr.cap.max_recv_wr = cmd->max_recv_wr; | |
1878 | attr.cap.max_send_sge = cmd->max_send_sge; | |
1879 | attr.cap.max_recv_sge = cmd->max_recv_sge; | |
1880 | attr.cap.max_inline_data = cmd->max_inline_data; | |
bc38a6ab | 1881 | |
9ead190b RD |
1882 | obj->uevent.events_reported = 0; |
1883 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1884 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab | 1885 | |
6d8a7497 EBE |
1886 | if (cmd_sz >= offsetof(typeof(*cmd), create_flags) + |
1887 | sizeof(cmd->create_flags)) | |
1888 | attr.create_flags = cmd->create_flags; | |
1889 | ||
8a06ce59 LR |
1890 | if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK | |
1891 | IB_QP_CREATE_CROSS_CHANNEL | | |
1892 | IB_QP_CREATE_MANAGED_SEND | | |
b531b909 MD |
1893 | IB_QP_CREATE_MANAGED_RECV | |
1894 | IB_QP_CREATE_SCATTER_FCS)) { | |
6d8a7497 EBE |
1895 | ret = -EINVAL; |
1896 | goto err_put; | |
1897 | } | |
1898 | ||
1899 | buf = (void *)cmd + sizeof(*cmd); | |
1900 | if (cmd_sz > sizeof(*cmd)) | |
1901 | if (!(buf[0] == 0 && !memcmp(buf, buf + 1, | |
1902 | cmd_sz - sizeof(*cmd) - 1))) { | |
1903 | ret = -EINVAL; | |
1904 | goto err_put; | |
1905 | } | |
1906 | ||
1907 | if (cmd->qp_type == IB_QPT_XRC_TGT) | |
b93f3c18 SH |
1908 | qp = ib_create_qp(pd, &attr); |
1909 | else | |
6d8a7497 | 1910 | qp = device->create_qp(pd, &attr, uhw); |
b93f3c18 | 1911 | |
bc38a6ab RD |
1912 | if (IS_ERR(qp)) { |
1913 | ret = PTR_ERR(qp); | |
9ead190b | 1914 | goto err_put; |
bc38a6ab RD |
1915 | } |
1916 | ||
6d8a7497 | 1917 | if (cmd->qp_type != IB_QPT_XRC_TGT) { |
0e0ec7e0 | 1918 | qp->real_qp = qp; |
b93f3c18 SH |
1919 | qp->device = device; |
1920 | qp->pd = pd; | |
1921 | qp->send_cq = attr.send_cq; | |
1922 | qp->recv_cq = attr.recv_cq; | |
1923 | qp->srq = attr.srq; | |
c70285f8 | 1924 | qp->rwq_ind_tbl = ind_tbl; |
b93f3c18 SH |
1925 | qp->event_handler = attr.event_handler; |
1926 | qp->qp_context = attr.qp_context; | |
1927 | qp->qp_type = attr.qp_type; | |
e47e321a | 1928 | atomic_set(&qp->usecnt, 0); |
b93f3c18 | 1929 | atomic_inc(&pd->usecnt); |
c70285f8 YH |
1930 | if (attr.send_cq) |
1931 | atomic_inc(&attr.send_cq->usecnt); | |
b93f3c18 SH |
1932 | if (attr.recv_cq) |
1933 | atomic_inc(&attr.recv_cq->usecnt); | |
1934 | if (attr.srq) | |
1935 | atomic_inc(&attr.srq->usecnt); | |
c70285f8 YH |
1936 | if (ind_tbl) |
1937 | atomic_inc(&ind_tbl->usecnt); | |
b93f3c18 SH |
1938 | } |
1939 | qp->uobject = &obj->uevent.uobject; | |
bc38a6ab | 1940 | |
9ead190b RD |
1941 | obj->uevent.uobject.object = qp; |
1942 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1943 | if (ret) |
1944 | goto err_destroy; | |
1945 | ||
9ead190b | 1946 | memset(&resp, 0, sizeof resp); |
6d8a7497 EBE |
1947 | resp.base.qpn = qp->qp_num; |
1948 | resp.base.qp_handle = obj->uevent.uobject.id; | |
1949 | resp.base.max_recv_sge = attr.cap.max_recv_sge; | |
1950 | resp.base.max_send_sge = attr.cap.max_send_sge; | |
1951 | resp.base.max_recv_wr = attr.cap.max_recv_wr; | |
1952 | resp.base.max_send_wr = attr.cap.max_send_wr; | |
1953 | resp.base.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1954 | |
6d8a7497 EBE |
1955 | resp.response_length = offsetof(typeof(resp), response_length) + |
1956 | sizeof(resp.response_length); | |
1957 | ||
1958 | ret = cb(file, &resp, ucore); | |
1959 | if (ret) | |
1960 | goto err_cb; | |
bc38a6ab | 1961 | |
846be90d YH |
1962 | if (xrcd) { |
1963 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, | |
1964 | uobject); | |
1965 | atomic_inc(&obj->uxrcd->refcnt); | |
b93f3c18 | 1966 | put_xrcd_read(xrcd_uobj); |
846be90d YH |
1967 | } |
1968 | ||
b93f3c18 SH |
1969 | if (pd) |
1970 | put_pd_read(pd); | |
1971 | if (scq) | |
1972 | put_cq_read(scq); | |
9977f4f6 | 1973 | if (rcq && rcq != scq) |
43db2bc0 | 1974 | put_cq_read(rcq); |
9ead190b RD |
1975 | if (srq) |
1976 | put_srq_read(srq); | |
c70285f8 YH |
1977 | if (ind_tbl) |
1978 | put_rwq_indirection_table_read(ind_tbl); | |
9ead190b | 1979 | |
95ed644f | 1980 | mutex_lock(&file->mutex); |
9ead190b | 1981 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1982 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1983 | |
9ead190b RD |
1984 | obj->uevent.uobject.live = 1; |
1985 | ||
1986 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab | 1987 | |
6d8a7497 EBE |
1988 | return 0; |
1989 | err_cb: | |
9ead190b | 1990 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); |
bc38a6ab RD |
1991 | |
1992 | err_destroy: | |
1993 | ib_destroy_qp(qp); | |
1994 | ||
9ead190b | 1995 | err_put: |
b93f3c18 SH |
1996 | if (xrcd) |
1997 | put_xrcd_read(xrcd_uobj); | |
9ead190b RD |
1998 | if (pd) |
1999 | put_pd_read(pd); | |
2000 | if (scq) | |
2001 | put_cq_read(scq); | |
43db2bc0 | 2002 | if (rcq && rcq != scq) |
9ead190b RD |
2003 | put_cq_read(rcq); |
2004 | if (srq) | |
2005 | put_srq_read(srq); | |
c70285f8 YH |
2006 | if (ind_tbl) |
2007 | put_rwq_indirection_table_read(ind_tbl); | |
9ead190b RD |
2008 | |
2009 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
2010 | return ret; |
2011 | } | |
2012 | ||
6d8a7497 EBE |
2013 | static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file, |
2014 | struct ib_uverbs_ex_create_qp_resp *resp, | |
2015 | struct ib_udata *ucore) | |
2016 | { | |
2017 | if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) | |
2018 | return -EFAULT; | |
2019 | ||
2020 | return 0; | |
2021 | } | |
2022 | ||
2023 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
2024 | struct ib_device *ib_dev, | |
2025 | const char __user *buf, int in_len, | |
2026 | int out_len) | |
2027 | { | |
2028 | struct ib_uverbs_create_qp cmd; | |
2029 | struct ib_uverbs_ex_create_qp cmd_ex; | |
2030 | struct ib_udata ucore; | |
2031 | struct ib_udata uhw; | |
2032 | ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp); | |
2033 | int err; | |
2034 | ||
2035 | if (out_len < resp_size) | |
2036 | return -ENOSPC; | |
2037 | ||
2038 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
2039 | return -EFAULT; | |
2040 | ||
2041 | INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd), | |
2042 | resp_size); | |
2043 | INIT_UDATA(&uhw, buf + sizeof(cmd), | |
2044 | (unsigned long)cmd.response + resp_size, | |
3d943c9d MD |
2045 | in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr), |
2046 | out_len - resp_size); | |
6d8a7497 EBE |
2047 | |
2048 | memset(&cmd_ex, 0, sizeof(cmd_ex)); | |
2049 | cmd_ex.user_handle = cmd.user_handle; | |
2050 | cmd_ex.pd_handle = cmd.pd_handle; | |
2051 | cmd_ex.send_cq_handle = cmd.send_cq_handle; | |
2052 | cmd_ex.recv_cq_handle = cmd.recv_cq_handle; | |
2053 | cmd_ex.srq_handle = cmd.srq_handle; | |
2054 | cmd_ex.max_send_wr = cmd.max_send_wr; | |
2055 | cmd_ex.max_recv_wr = cmd.max_recv_wr; | |
2056 | cmd_ex.max_send_sge = cmd.max_send_sge; | |
2057 | cmd_ex.max_recv_sge = cmd.max_recv_sge; | |
2058 | cmd_ex.max_inline_data = cmd.max_inline_data; | |
2059 | cmd_ex.sq_sig_all = cmd.sq_sig_all; | |
2060 | cmd_ex.qp_type = cmd.qp_type; | |
2061 | cmd_ex.is_srq = cmd.is_srq; | |
2062 | ||
2063 | err = create_qp(file, &ucore, &uhw, &cmd_ex, | |
2064 | offsetof(typeof(cmd_ex), is_srq) + | |
2065 | sizeof(cmd.is_srq), ib_uverbs_create_qp_cb, | |
2066 | NULL); | |
2067 | ||
2068 | if (err) | |
2069 | return err; | |
2070 | ||
2071 | return in_len; | |
2072 | } | |
2073 | ||
2074 | static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file, | |
2075 | struct ib_uverbs_ex_create_qp_resp *resp, | |
2076 | struct ib_udata *ucore) | |
2077 | { | |
2078 | if (ib_copy_to_udata(ucore, resp, resp->response_length)) | |
2079 | return -EFAULT; | |
2080 | ||
2081 | return 0; | |
2082 | } | |
2083 | ||
2084 | int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file, | |
2085 | struct ib_device *ib_dev, | |
2086 | struct ib_udata *ucore, | |
2087 | struct ib_udata *uhw) | |
2088 | { | |
2089 | struct ib_uverbs_ex_create_qp_resp resp; | |
2090 | struct ib_uverbs_ex_create_qp cmd = {0}; | |
2091 | int err; | |
2092 | ||
2093 | if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) + | |
2094 | sizeof(cmd.comp_mask))) | |
2095 | return -EINVAL; | |
2096 | ||
2097 | err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); | |
2098 | if (err) | |
2099 | return err; | |
2100 | ||
c70285f8 | 2101 | if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK) |
6d8a7497 EBE |
2102 | return -EINVAL; |
2103 | ||
2104 | if (cmd.reserved) | |
2105 | return -EINVAL; | |
2106 | ||
2107 | if (ucore->outlen < (offsetof(typeof(resp), response_length) + | |
2108 | sizeof(resp.response_length))) | |
2109 | return -ENOSPC; | |
2110 | ||
2111 | err = create_qp(file, ucore, uhw, &cmd, | |
2112 | min(ucore->inlen, sizeof(cmd)), | |
2113 | ib_uverbs_ex_create_qp_cb, NULL); | |
2114 | ||
2115 | if (err) | |
2116 | return err; | |
2117 | ||
2118 | return 0; | |
2119 | } | |
2120 | ||
42849b26 | 2121 | ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, |
057aec0d | 2122 | struct ib_device *ib_dev, |
42849b26 SH |
2123 | const char __user *buf, int in_len, int out_len) |
2124 | { | |
2125 | struct ib_uverbs_open_qp cmd; | |
2126 | struct ib_uverbs_create_qp_resp resp; | |
2127 | struct ib_udata udata; | |
2128 | struct ib_uqp_object *obj; | |
2129 | struct ib_xrcd *xrcd; | |
2130 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
2131 | struct ib_qp *qp; | |
2132 | struct ib_qp_open_attr attr; | |
2133 | int ret; | |
2134 | ||
2135 | if (out_len < sizeof resp) | |
2136 | return -ENOSPC; | |
2137 | ||
2138 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2139 | return -EFAULT; | |
2140 | ||
2141 | INIT_UDATA(&udata, buf + sizeof cmd, | |
2142 | (unsigned long) cmd.response + sizeof resp, | |
2143 | in_len - sizeof cmd, out_len - sizeof resp); | |
2144 | ||
2145 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
2146 | if (!obj) | |
2147 | return -ENOMEM; | |
2148 | ||
3bea57a5 | 2149 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
42849b26 SH |
2150 | down_write(&obj->uevent.uobject.mutex); |
2151 | ||
2152 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
2153 | if (!xrcd) { | |
2154 | ret = -EINVAL; | |
2155 | goto err_put; | |
2156 | } | |
2157 | ||
2158 | attr.event_handler = ib_uverbs_qp_event_handler; | |
2159 | attr.qp_context = file; | |
2160 | attr.qp_num = cmd.qpn; | |
2161 | attr.qp_type = cmd.qp_type; | |
2162 | ||
2163 | obj->uevent.events_reported = 0; | |
2164 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
2165 | INIT_LIST_HEAD(&obj->mcast_list); | |
2166 | ||
2167 | qp = ib_open_qp(xrcd, &attr); | |
2168 | if (IS_ERR(qp)) { | |
2169 | ret = PTR_ERR(qp); | |
2170 | goto err_put; | |
2171 | } | |
2172 | ||
2173 | qp->uobject = &obj->uevent.uobject; | |
2174 | ||
2175 | obj->uevent.uobject.object = qp; | |
2176 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
2177 | if (ret) | |
2178 | goto err_destroy; | |
2179 | ||
2180 | memset(&resp, 0, sizeof resp); | |
2181 | resp.qpn = qp->qp_num; | |
2182 | resp.qp_handle = obj->uevent.uobject.id; | |
2183 | ||
2184 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2185 | &resp, sizeof resp)) { | |
2186 | ret = -EFAULT; | |
2187 | goto err_remove; | |
2188 | } | |
2189 | ||
846be90d YH |
2190 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); |
2191 | atomic_inc(&obj->uxrcd->refcnt); | |
42849b26 SH |
2192 | put_xrcd_read(xrcd_uobj); |
2193 | ||
2194 | mutex_lock(&file->mutex); | |
2195 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); | |
2196 | mutex_unlock(&file->mutex); | |
2197 | ||
2198 | obj->uevent.uobject.live = 1; | |
2199 | ||
2200 | up_write(&obj->uevent.uobject.mutex); | |
2201 | ||
2202 | return in_len; | |
2203 | ||
2204 | err_remove: | |
2205 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
2206 | ||
2207 | err_destroy: | |
2208 | ib_destroy_qp(qp); | |
2209 | ||
2210 | err_put: | |
2211 | put_xrcd_read(xrcd_uobj); | |
2212 | put_uobj_write(&obj->uevent.uobject); | |
2213 | return ret; | |
2214 | } | |
2215 | ||
7ccc9a24 | 2216 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
057aec0d | 2217 | struct ib_device *ib_dev, |
7ccc9a24 DB |
2218 | const char __user *buf, int in_len, |
2219 | int out_len) | |
2220 | { | |
2221 | struct ib_uverbs_query_qp cmd; | |
2222 | struct ib_uverbs_query_qp_resp resp; | |
2223 | struct ib_qp *qp; | |
2224 | struct ib_qp_attr *attr; | |
2225 | struct ib_qp_init_attr *init_attr; | |
2226 | int ret; | |
2227 | ||
2228 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2229 | return -EFAULT; | |
2230 | ||
2231 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
2232 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
2233 | if (!attr || !init_attr) { | |
2234 | ret = -ENOMEM; | |
2235 | goto out; | |
2236 | } | |
2237 | ||
9ead190b RD |
2238 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2239 | if (!qp) { | |
7ccc9a24 | 2240 | ret = -EINVAL; |
9ead190b RD |
2241 | goto out; |
2242 | } | |
2243 | ||
2244 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 2245 | |
9ead190b | 2246 | put_qp_read(qp); |
7ccc9a24 DB |
2247 | |
2248 | if (ret) | |
2249 | goto out; | |
2250 | ||
2251 | memset(&resp, 0, sizeof resp); | |
2252 | ||
2253 | resp.qp_state = attr->qp_state; | |
2254 | resp.cur_qp_state = attr->cur_qp_state; | |
2255 | resp.path_mtu = attr->path_mtu; | |
2256 | resp.path_mig_state = attr->path_mig_state; | |
2257 | resp.qkey = attr->qkey; | |
2258 | resp.rq_psn = attr->rq_psn; | |
2259 | resp.sq_psn = attr->sq_psn; | |
2260 | resp.dest_qp_num = attr->dest_qp_num; | |
2261 | resp.qp_access_flags = attr->qp_access_flags; | |
2262 | resp.pkey_index = attr->pkey_index; | |
2263 | resp.alt_pkey_index = attr->alt_pkey_index; | |
0b26c88f | 2264 | resp.sq_draining = attr->sq_draining; |
7ccc9a24 DB |
2265 | resp.max_rd_atomic = attr->max_rd_atomic; |
2266 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
2267 | resp.min_rnr_timer = attr->min_rnr_timer; | |
2268 | resp.port_num = attr->port_num; | |
2269 | resp.timeout = attr->timeout; | |
2270 | resp.retry_cnt = attr->retry_cnt; | |
2271 | resp.rnr_retry = attr->rnr_retry; | |
2272 | resp.alt_port_num = attr->alt_port_num; | |
2273 | resp.alt_timeout = attr->alt_timeout; | |
2274 | ||
2275 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
2276 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
2277 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
2278 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
2279 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
2280 | resp.dest.dlid = attr->ah_attr.dlid; | |
2281 | resp.dest.sl = attr->ah_attr.sl; | |
2282 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
2283 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
2284 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
2285 | resp.dest.port_num = attr->ah_attr.port_num; | |
2286 | ||
2287 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
2288 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
2289 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
2290 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
2291 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
2292 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
2293 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
2294 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
2295 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
2296 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
2297 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
2298 | ||
2299 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
2300 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
2301 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
2302 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
2303 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 2304 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
2305 | |
2306 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2307 | &resp, sizeof resp)) | |
2308 | ret = -EFAULT; | |
2309 | ||
2310 | out: | |
2311 | kfree(attr); | |
2312 | kfree(init_attr); | |
2313 | ||
2314 | return ret ? ret : in_len; | |
2315 | } | |
2316 | ||
9977f4f6 SH |
2317 | /* Remove ignored fields set in the attribute mask */ |
2318 | static int modify_qp_mask(enum ib_qp_type qp_type, int mask) | |
2319 | { | |
2320 | switch (qp_type) { | |
2321 | case IB_QPT_XRC_INI: | |
2322 | return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); | |
b93f3c18 SH |
2323 | case IB_QPT_XRC_TGT: |
2324 | return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | | |
2325 | IB_QP_RNR_RETRY); | |
9977f4f6 SH |
2326 | default: |
2327 | return mask; | |
2328 | } | |
2329 | } | |
2330 | ||
bc38a6ab | 2331 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
057aec0d | 2332 | struct ib_device *ib_dev, |
bc38a6ab RD |
2333 | const char __user *buf, int in_len, |
2334 | int out_len) | |
2335 | { | |
2336 | struct ib_uverbs_modify_qp cmd; | |
9bc57e2d | 2337 | struct ib_udata udata; |
bc38a6ab RD |
2338 | struct ib_qp *qp; |
2339 | struct ib_qp_attr *attr; | |
2340 | int ret; | |
2341 | ||
2342 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2343 | return -EFAULT; | |
2344 | ||
9bc57e2d RC |
2345 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
2346 | out_len); | |
2347 | ||
bc38a6ab RD |
2348 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
2349 | if (!attr) | |
2350 | return -ENOMEM; | |
2351 | ||
9ead190b RD |
2352 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2353 | if (!qp) { | |
bc38a6ab RD |
2354 | ret = -EINVAL; |
2355 | goto out; | |
2356 | } | |
2357 | ||
2358 | attr->qp_state = cmd.qp_state; | |
2359 | attr->cur_qp_state = cmd.cur_qp_state; | |
2360 | attr->path_mtu = cmd.path_mtu; | |
2361 | attr->path_mig_state = cmd.path_mig_state; | |
2362 | attr->qkey = cmd.qkey; | |
2363 | attr->rq_psn = cmd.rq_psn; | |
2364 | attr->sq_psn = cmd.sq_psn; | |
2365 | attr->dest_qp_num = cmd.dest_qp_num; | |
2366 | attr->qp_access_flags = cmd.qp_access_flags; | |
2367 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 2368 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
2369 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
2370 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
2371 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
2372 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
2373 | attr->port_num = cmd.port_num; | |
2374 | attr->timeout = cmd.timeout; | |
2375 | attr->retry_cnt = cmd.retry_cnt; | |
2376 | attr->rnr_retry = cmd.rnr_retry; | |
2377 | attr->alt_port_num = cmd.alt_port_num; | |
2378 | attr->alt_timeout = cmd.alt_timeout; | |
2379 | ||
2380 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
2381 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
2382 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
2383 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
2384 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
2385 | attr->ah_attr.dlid = cmd.dest.dlid; | |
2386 | attr->ah_attr.sl = cmd.dest.sl; | |
2387 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
2388 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
2389 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
2390 | attr->ah_attr.port_num = cmd.dest.port_num; | |
2391 | ||
2392 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
2393 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
2394 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
2395 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
2396 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
2397 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
2398 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
2399 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
2400 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
2401 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
2402 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
2403 | ||
0e0ec7e0 | 2404 | if (qp->real_qp == qp) { |
dbf727de | 2405 | ret = ib_resolve_eth_dmac(qp, attr, &cmd.attr_mask); |
ed4c54e5 | 2406 | if (ret) |
0fb8bcf0 | 2407 | goto release_qp; |
0e0ec7e0 SH |
2408 | ret = qp->device->modify_qp(qp, attr, |
2409 | modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata); | |
2410 | } else { | |
2411 | ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask)); | |
2412 | } | |
9ead190b | 2413 | |
bc38a6ab | 2414 | if (ret) |
0fb8bcf0 | 2415 | goto release_qp; |
bc38a6ab RD |
2416 | |
2417 | ret = in_len; | |
2418 | ||
0fb8bcf0 ML |
2419 | release_qp: |
2420 | put_qp_read(qp); | |
2421 | ||
bc38a6ab | 2422 | out: |
bc38a6ab RD |
2423 | kfree(attr); |
2424 | ||
2425 | return ret; | |
2426 | } | |
2427 | ||
2428 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
057aec0d | 2429 | struct ib_device *ib_dev, |
bc38a6ab RD |
2430 | const char __user *buf, int in_len, |
2431 | int out_len) | |
2432 | { | |
63aaf647 RD |
2433 | struct ib_uverbs_destroy_qp cmd; |
2434 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 2435 | struct ib_uobject *uobj; |
63aaf647 | 2436 | struct ib_qp *qp; |
9ead190b | 2437 | struct ib_uqp_object *obj; |
63aaf647 | 2438 | int ret = -EINVAL; |
bc38a6ab RD |
2439 | |
2440 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2441 | return -EFAULT; | |
2442 | ||
63aaf647 RD |
2443 | memset(&resp, 0, sizeof resp); |
2444 | ||
9ead190b RD |
2445 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
2446 | if (!uobj) | |
2447 | return -EINVAL; | |
2448 | qp = uobj->object; | |
2449 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 2450 | |
9ead190b RD |
2451 | if (!list_empty(&obj->mcast_list)) { |
2452 | put_uobj_write(uobj); | |
2453 | return -EBUSY; | |
f4e40156 | 2454 | } |
bc38a6ab RD |
2455 | |
2456 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
2457 | if (!ret) |
2458 | uobj->live = 0; | |
2459 | ||
2460 | put_uobj_write(uobj); | |
2461 | ||
bc38a6ab | 2462 | if (ret) |
9ead190b | 2463 | return ret; |
bc38a6ab | 2464 | |
846be90d YH |
2465 | if (obj->uxrcd) |
2466 | atomic_dec(&obj->uxrcd->refcnt); | |
2467 | ||
9ead190b | 2468 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 2469 | |
95ed644f | 2470 | mutex_lock(&file->mutex); |
9ead190b | 2471 | list_del(&uobj->list); |
95ed644f | 2472 | mutex_unlock(&file->mutex); |
bc38a6ab | 2473 | |
9ead190b | 2474 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 2475 | |
9ead190b | 2476 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 2477 | |
9ead190b | 2478 | put_uobj(uobj); |
bc38a6ab | 2479 | |
63aaf647 RD |
2480 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2481 | &resp, sizeof resp)) | |
9ead190b | 2482 | return -EFAULT; |
bc38a6ab | 2483 | |
9ead190b | 2484 | return in_len; |
bc38a6ab RD |
2485 | } |
2486 | ||
e622f2f4 CH |
2487 | static void *alloc_wr(size_t wr_size, __u32 num_sge) |
2488 | { | |
2489 | return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) + | |
2490 | num_sge * sizeof (struct ib_sge), GFP_KERNEL); | |
2491 | }; | |
2492 | ||
67cdb40c | 2493 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
057aec0d | 2494 | struct ib_device *ib_dev, |
a74cd4af RD |
2495 | const char __user *buf, int in_len, |
2496 | int out_len) | |
67cdb40c RD |
2497 | { |
2498 | struct ib_uverbs_post_send cmd; | |
2499 | struct ib_uverbs_post_send_resp resp; | |
2500 | struct ib_uverbs_send_wr *user_wr; | |
2501 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
2502 | struct ib_qp *qp; | |
2503 | int i, sg_ind; | |
9ead190b | 2504 | int is_ud; |
67cdb40c | 2505 | ssize_t ret = -EINVAL; |
1d784b89 | 2506 | size_t next_size; |
67cdb40c RD |
2507 | |
2508 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2509 | return -EFAULT; | |
2510 | ||
2511 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
2512 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
2513 | return -EINVAL; | |
2514 | ||
2515 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
2516 | return -EINVAL; | |
2517 | ||
2518 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
2519 | if (!user_wr) | |
2520 | return -ENOMEM; | |
2521 | ||
9ead190b RD |
2522 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2523 | if (!qp) | |
67cdb40c RD |
2524 | goto out; |
2525 | ||
9ead190b | 2526 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
2527 | sg_ind = 0; |
2528 | last = NULL; | |
2529 | for (i = 0; i < cmd.wr_count; ++i) { | |
2530 | if (copy_from_user(user_wr, | |
2531 | buf + sizeof cmd + i * cmd.wqe_size, | |
2532 | cmd.wqe_size)) { | |
2533 | ret = -EFAULT; | |
9ead190b | 2534 | goto out_put; |
67cdb40c RD |
2535 | } |
2536 | ||
2537 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
2538 | ret = -EINVAL; | |
9ead190b | 2539 | goto out_put; |
67cdb40c RD |
2540 | } |
2541 | ||
e622f2f4 CH |
2542 | if (is_ud) { |
2543 | struct ib_ud_wr *ud; | |
2544 | ||
2545 | if (user_wr->opcode != IB_WR_SEND && | |
2546 | user_wr->opcode != IB_WR_SEND_WITH_IMM) { | |
2547 | ret = -EINVAL; | |
2548 | goto out_put; | |
2549 | } | |
2550 | ||
1d784b89 MM |
2551 | next_size = sizeof(*ud); |
2552 | ud = alloc_wr(next_size, user_wr->num_sge); | |
e622f2f4 CH |
2553 | if (!ud) { |
2554 | ret = -ENOMEM; | |
2555 | goto out_put; | |
2556 | } | |
2557 | ||
2558 | ud->ah = idr_read_ah(user_wr->wr.ud.ah, file->ucontext); | |
2559 | if (!ud->ah) { | |
2560 | kfree(ud); | |
2561 | ret = -EINVAL; | |
2562 | goto out_put; | |
2563 | } | |
2564 | ud->remote_qpn = user_wr->wr.ud.remote_qpn; | |
2565 | ud->remote_qkey = user_wr->wr.ud.remote_qkey; | |
2566 | ||
2567 | next = &ud->wr; | |
2568 | } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM || | |
2569 | user_wr->opcode == IB_WR_RDMA_WRITE || | |
2570 | user_wr->opcode == IB_WR_RDMA_READ) { | |
2571 | struct ib_rdma_wr *rdma; | |
2572 | ||
1d784b89 MM |
2573 | next_size = sizeof(*rdma); |
2574 | rdma = alloc_wr(next_size, user_wr->num_sge); | |
e622f2f4 CH |
2575 | if (!rdma) { |
2576 | ret = -ENOMEM; | |
2577 | goto out_put; | |
2578 | } | |
2579 | ||
2580 | rdma->remote_addr = user_wr->wr.rdma.remote_addr; | |
2581 | rdma->rkey = user_wr->wr.rdma.rkey; | |
2582 | ||
2583 | next = &rdma->wr; | |
2584 | } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP || | |
2585 | user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) { | |
2586 | struct ib_atomic_wr *atomic; | |
2587 | ||
1d784b89 MM |
2588 | next_size = sizeof(*atomic); |
2589 | atomic = alloc_wr(next_size, user_wr->num_sge); | |
e622f2f4 CH |
2590 | if (!atomic) { |
2591 | ret = -ENOMEM; | |
2592 | goto out_put; | |
2593 | } | |
2594 | ||
2595 | atomic->remote_addr = user_wr->wr.atomic.remote_addr; | |
2596 | atomic->compare_add = user_wr->wr.atomic.compare_add; | |
2597 | atomic->swap = user_wr->wr.atomic.swap; | |
2598 | atomic->rkey = user_wr->wr.atomic.rkey; | |
2599 | ||
2600 | next = &atomic->wr; | |
2601 | } else if (user_wr->opcode == IB_WR_SEND || | |
2602 | user_wr->opcode == IB_WR_SEND_WITH_IMM || | |
2603 | user_wr->opcode == IB_WR_SEND_WITH_INV) { | |
1d784b89 MM |
2604 | next_size = sizeof(*next); |
2605 | next = alloc_wr(next_size, user_wr->num_sge); | |
e622f2f4 CH |
2606 | if (!next) { |
2607 | ret = -ENOMEM; | |
2608 | goto out_put; | |
2609 | } | |
2610 | } else { | |
2611 | ret = -EINVAL; | |
9ead190b | 2612 | goto out_put; |
67cdb40c RD |
2613 | } |
2614 | ||
e622f2f4 CH |
2615 | if (user_wr->opcode == IB_WR_SEND_WITH_IMM || |
2616 | user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) { | |
2617 | next->ex.imm_data = | |
2618 | (__be32 __force) user_wr->ex.imm_data; | |
2619 | } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) { | |
2620 | next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey; | |
2621 | } | |
2622 | ||
67cdb40c RD |
2623 | if (!last) |
2624 | wr = next; | |
2625 | else | |
2626 | last->next = next; | |
2627 | last = next; | |
2628 | ||
2629 | next->next = NULL; | |
2630 | next->wr_id = user_wr->wr_id; | |
2631 | next->num_sge = user_wr->num_sge; | |
2632 | next->opcode = user_wr->opcode; | |
2633 | next->send_flags = user_wr->send_flags; | |
67cdb40c | 2634 | |
67cdb40c RD |
2635 | if (next->num_sge) { |
2636 | next->sg_list = (void *) next + | |
1d784b89 | 2637 | ALIGN(next_size, sizeof(struct ib_sge)); |
67cdb40c RD |
2638 | if (copy_from_user(next->sg_list, |
2639 | buf + sizeof cmd + | |
2640 | cmd.wr_count * cmd.wqe_size + | |
2641 | sg_ind * sizeof (struct ib_sge), | |
2642 | next->num_sge * sizeof (struct ib_sge))) { | |
2643 | ret = -EFAULT; | |
9ead190b | 2644 | goto out_put; |
67cdb40c RD |
2645 | } |
2646 | sg_ind += next->num_sge; | |
2647 | } else | |
2648 | next->sg_list = NULL; | |
2649 | } | |
2650 | ||
2651 | resp.bad_wr = 0; | |
0e0ec7e0 | 2652 | ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); |
67cdb40c RD |
2653 | if (ret) |
2654 | for (next = wr; next; next = next->next) { | |
2655 | ++resp.bad_wr; | |
2656 | if (next == bad_wr) | |
2657 | break; | |
2658 | } | |
2659 | ||
2660 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2661 | &resp, sizeof resp)) | |
2662 | ret = -EFAULT; | |
2663 | ||
9ead190b RD |
2664 | out_put: |
2665 | put_qp_read(qp); | |
67cdb40c RD |
2666 | |
2667 | while (wr) { | |
e622f2f4 CH |
2668 | if (is_ud && ud_wr(wr)->ah) |
2669 | put_ah_read(ud_wr(wr)->ah); | |
67cdb40c RD |
2670 | next = wr->next; |
2671 | kfree(wr); | |
2672 | wr = next; | |
2673 | } | |
2674 | ||
18320828 | 2675 | out: |
67cdb40c RD |
2676 | kfree(user_wr); |
2677 | ||
2678 | return ret ? ret : in_len; | |
2679 | } | |
2680 | ||
2681 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
2682 | int in_len, | |
2683 | u32 wr_count, | |
2684 | u32 sge_count, | |
2685 | u32 wqe_size) | |
2686 | { | |
2687 | struct ib_uverbs_recv_wr *user_wr; | |
2688 | struct ib_recv_wr *wr = NULL, *last, *next; | |
2689 | int sg_ind; | |
2690 | int i; | |
2691 | int ret; | |
2692 | ||
2693 | if (in_len < wqe_size * wr_count + | |
2694 | sge_count * sizeof (struct ib_uverbs_sge)) | |
2695 | return ERR_PTR(-EINVAL); | |
2696 | ||
2697 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
2698 | return ERR_PTR(-EINVAL); | |
2699 | ||
2700 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
2701 | if (!user_wr) | |
2702 | return ERR_PTR(-ENOMEM); | |
2703 | ||
2704 | sg_ind = 0; | |
2705 | last = NULL; | |
2706 | for (i = 0; i < wr_count; ++i) { | |
2707 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
2708 | wqe_size)) { | |
2709 | ret = -EFAULT; | |
2710 | goto err; | |
2711 | } | |
2712 | ||
2713 | if (user_wr->num_sge + sg_ind > sge_count) { | |
2714 | ret = -EINVAL; | |
2715 | goto err; | |
2716 | } | |
2717 | ||
2718 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
2719 | user_wr->num_sge * sizeof (struct ib_sge), | |
2720 | GFP_KERNEL); | |
2721 | if (!next) { | |
2722 | ret = -ENOMEM; | |
2723 | goto err; | |
2724 | } | |
2725 | ||
2726 | if (!last) | |
2727 | wr = next; | |
2728 | else | |
2729 | last->next = next; | |
2730 | last = next; | |
2731 | ||
2732 | next->next = NULL; | |
2733 | next->wr_id = user_wr->wr_id; | |
2734 | next->num_sge = user_wr->num_sge; | |
2735 | ||
2736 | if (next->num_sge) { | |
2737 | next->sg_list = (void *) next + | |
2738 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2739 | if (copy_from_user(next->sg_list, | |
2740 | buf + wr_count * wqe_size + | |
2741 | sg_ind * sizeof (struct ib_sge), | |
2742 | next->num_sge * sizeof (struct ib_sge))) { | |
2743 | ret = -EFAULT; | |
2744 | goto err; | |
2745 | } | |
2746 | sg_ind += next->num_sge; | |
2747 | } else | |
2748 | next->sg_list = NULL; | |
2749 | } | |
2750 | ||
2751 | kfree(user_wr); | |
2752 | return wr; | |
2753 | ||
2754 | err: | |
2755 | kfree(user_wr); | |
2756 | ||
2757 | while (wr) { | |
2758 | next = wr->next; | |
2759 | kfree(wr); | |
2760 | wr = next; | |
2761 | } | |
2762 | ||
2763 | return ERR_PTR(ret); | |
2764 | } | |
2765 | ||
2766 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
057aec0d | 2767 | struct ib_device *ib_dev, |
a74cd4af RD |
2768 | const char __user *buf, int in_len, |
2769 | int out_len) | |
67cdb40c RD |
2770 | { |
2771 | struct ib_uverbs_post_recv cmd; | |
2772 | struct ib_uverbs_post_recv_resp resp; | |
2773 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2774 | struct ib_qp *qp; | |
2775 | ssize_t ret = -EINVAL; | |
2776 | ||
2777 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2778 | return -EFAULT; | |
2779 | ||
2780 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2781 | in_len - sizeof cmd, cmd.wr_count, | |
2782 | cmd.sge_count, cmd.wqe_size); | |
2783 | if (IS_ERR(wr)) | |
2784 | return PTR_ERR(wr); | |
2785 | ||
9ead190b RD |
2786 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2787 | if (!qp) | |
67cdb40c RD |
2788 | goto out; |
2789 | ||
2790 | resp.bad_wr = 0; | |
0e0ec7e0 | 2791 | ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); |
9ead190b RD |
2792 | |
2793 | put_qp_read(qp); | |
2794 | ||
67cdb40c RD |
2795 | if (ret) |
2796 | for (next = wr; next; next = next->next) { | |
2797 | ++resp.bad_wr; | |
2798 | if (next == bad_wr) | |
2799 | break; | |
2800 | } | |
2801 | ||
67cdb40c RD |
2802 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2803 | &resp, sizeof resp)) | |
2804 | ret = -EFAULT; | |
2805 | ||
2806 | out: | |
67cdb40c RD |
2807 | while (wr) { |
2808 | next = wr->next; | |
2809 | kfree(wr); | |
2810 | wr = next; | |
2811 | } | |
2812 | ||
2813 | return ret ? ret : in_len; | |
2814 | } | |
2815 | ||
2816 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
057aec0d | 2817 | struct ib_device *ib_dev, |
a74cd4af RD |
2818 | const char __user *buf, int in_len, |
2819 | int out_len) | |
67cdb40c RD |
2820 | { |
2821 | struct ib_uverbs_post_srq_recv cmd; | |
2822 | struct ib_uverbs_post_srq_recv_resp resp; | |
2823 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2824 | struct ib_srq *srq; | |
2825 | ssize_t ret = -EINVAL; | |
2826 | ||
2827 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2828 | return -EFAULT; | |
2829 | ||
2830 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2831 | in_len - sizeof cmd, cmd.wr_count, | |
2832 | cmd.sge_count, cmd.wqe_size); | |
2833 | if (IS_ERR(wr)) | |
2834 | return PTR_ERR(wr); | |
2835 | ||
9ead190b RD |
2836 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2837 | if (!srq) | |
67cdb40c RD |
2838 | goto out; |
2839 | ||
2840 | resp.bad_wr = 0; | |
2841 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
2842 | |
2843 | put_srq_read(srq); | |
2844 | ||
67cdb40c RD |
2845 | if (ret) |
2846 | for (next = wr; next; next = next->next) { | |
2847 | ++resp.bad_wr; | |
2848 | if (next == bad_wr) | |
2849 | break; | |
2850 | } | |
2851 | ||
67cdb40c RD |
2852 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2853 | &resp, sizeof resp)) | |
2854 | ret = -EFAULT; | |
2855 | ||
2856 | out: | |
67cdb40c RD |
2857 | while (wr) { |
2858 | next = wr->next; | |
2859 | kfree(wr); | |
2860 | wr = next; | |
2861 | } | |
2862 | ||
2863 | return ret ? ret : in_len; | |
2864 | } | |
2865 | ||
2866 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
057aec0d | 2867 | struct ib_device *ib_dev, |
67cdb40c RD |
2868 | const char __user *buf, int in_len, |
2869 | int out_len) | |
2870 | { | |
2871 | struct ib_uverbs_create_ah cmd; | |
2872 | struct ib_uverbs_create_ah_resp resp; | |
2873 | struct ib_uobject *uobj; | |
2874 | struct ib_pd *pd; | |
2875 | struct ib_ah *ah; | |
2876 | struct ib_ah_attr attr; | |
2877 | int ret; | |
2878 | ||
2879 | if (out_len < sizeof resp) | |
2880 | return -ENOSPC; | |
2881 | ||
2882 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2883 | return -EFAULT; | |
2884 | ||
2885 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
2886 | if (!uobj) | |
2887 | return -ENOMEM; | |
2888 | ||
3bea57a5 | 2889 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_class); |
9ead190b | 2890 | down_write(&uobj->mutex); |
67cdb40c | 2891 | |
9ead190b RD |
2892 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
2893 | if (!pd) { | |
67cdb40c | 2894 | ret = -EINVAL; |
9ead190b | 2895 | goto err; |
67cdb40c RD |
2896 | } |
2897 | ||
67cdb40c RD |
2898 | attr.dlid = cmd.attr.dlid; |
2899 | attr.sl = cmd.attr.sl; | |
2900 | attr.src_path_bits = cmd.attr.src_path_bits; | |
2901 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 2902 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
2903 | attr.port_num = cmd.attr.port_num; |
2904 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
2905 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
2906 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
2907 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
8b0f93d9 | 2908 | memset(&attr.dmac, 0, sizeof(attr.dmac)); |
67cdb40c RD |
2909 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); |
2910 | ||
2911 | ah = ib_create_ah(pd, &attr); | |
2912 | if (IS_ERR(ah)) { | |
2913 | ret = PTR_ERR(ah); | |
ec924b47 | 2914 | goto err_put; |
67cdb40c RD |
2915 | } |
2916 | ||
9ead190b RD |
2917 | ah->uobject = uobj; |
2918 | uobj->object = ah; | |
67cdb40c | 2919 | |
9ead190b | 2920 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
2921 | if (ret) |
2922 | goto err_destroy; | |
2923 | ||
2924 | resp.ah_handle = uobj->id; | |
2925 | ||
2926 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2927 | &resp, sizeof resp)) { | |
2928 | ret = -EFAULT; | |
9ead190b | 2929 | goto err_copy; |
67cdb40c RD |
2930 | } |
2931 | ||
9ead190b RD |
2932 | put_pd_read(pd); |
2933 | ||
95ed644f | 2934 | mutex_lock(&file->mutex); |
67cdb40c | 2935 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 2936 | mutex_unlock(&file->mutex); |
67cdb40c | 2937 | |
9ead190b RD |
2938 | uobj->live = 1; |
2939 | ||
2940 | up_write(&uobj->mutex); | |
67cdb40c RD |
2941 | |
2942 | return in_len; | |
2943 | ||
9ead190b RD |
2944 | err_copy: |
2945 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
2946 | |
2947 | err_destroy: | |
2948 | ib_destroy_ah(ah); | |
2949 | ||
ec924b47 MT |
2950 | err_put: |
2951 | put_pd_read(pd); | |
2952 | ||
9ead190b RD |
2953 | err: |
2954 | put_uobj_write(uobj); | |
67cdb40c RD |
2955 | return ret; |
2956 | } | |
2957 | ||
2958 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
057aec0d | 2959 | struct ib_device *ib_dev, |
67cdb40c RD |
2960 | const char __user *buf, int in_len, int out_len) |
2961 | { | |
2962 | struct ib_uverbs_destroy_ah cmd; | |
2963 | struct ib_ah *ah; | |
2964 | struct ib_uobject *uobj; | |
9ead190b | 2965 | int ret; |
67cdb40c RD |
2966 | |
2967 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2968 | return -EFAULT; | |
2969 | ||
9ead190b RD |
2970 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
2971 | if (!uobj) | |
2972 | return -EINVAL; | |
2973 | ah = uobj->object; | |
67cdb40c | 2974 | |
9ead190b RD |
2975 | ret = ib_destroy_ah(ah); |
2976 | if (!ret) | |
2977 | uobj->live = 0; | |
67cdb40c | 2978 | |
9ead190b | 2979 | put_uobj_write(uobj); |
67cdb40c | 2980 | |
67cdb40c | 2981 | if (ret) |
9ead190b | 2982 | return ret; |
67cdb40c | 2983 | |
9ead190b | 2984 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 2985 | |
95ed644f | 2986 | mutex_lock(&file->mutex); |
67cdb40c | 2987 | list_del(&uobj->list); |
95ed644f | 2988 | mutex_unlock(&file->mutex); |
67cdb40c | 2989 | |
9ead190b | 2990 | put_uobj(uobj); |
67cdb40c | 2991 | |
9ead190b | 2992 | return in_len; |
67cdb40c RD |
2993 | } |
2994 | ||
bc38a6ab | 2995 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
057aec0d | 2996 | struct ib_device *ib_dev, |
bc38a6ab RD |
2997 | const char __user *buf, int in_len, |
2998 | int out_len) | |
2999 | { | |
3000 | struct ib_uverbs_attach_mcast cmd; | |
3001 | struct ib_qp *qp; | |
9ead190b | 3002 | struct ib_uqp_object *obj; |
f4e40156 | 3003 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 3004 | int ret; |
bc38a6ab RD |
3005 | |
3006 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3007 | return -EFAULT; | |
3008 | ||
e214a0fe | 3009 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
3010 | if (!qp) |
3011 | return -EINVAL; | |
f4e40156 | 3012 | |
9ead190b | 3013 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 3014 | |
9ead190b | 3015 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
3016 | if (cmd.mlid == mcast->lid && |
3017 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
3018 | ret = 0; | |
9ead190b | 3019 | goto out_put; |
f4e40156 JM |
3020 | } |
3021 | ||
3022 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
3023 | if (!mcast) { | |
3024 | ret = -ENOMEM; | |
9ead190b | 3025 | goto out_put; |
f4e40156 JM |
3026 | } |
3027 | ||
3028 | mcast->lid = cmd.mlid; | |
3029 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 3030 | |
f4e40156 | 3031 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
3032 | if (!ret) |
3033 | list_add_tail(&mcast->list, &obj->mcast_list); | |
3034 | else | |
f4e40156 JM |
3035 | kfree(mcast); |
3036 | ||
9ead190b | 3037 | out_put: |
e214a0fe | 3038 | put_qp_write(qp); |
bc38a6ab RD |
3039 | |
3040 | return ret ? ret : in_len; | |
3041 | } | |
3042 | ||
3043 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
057aec0d | 3044 | struct ib_device *ib_dev, |
bc38a6ab RD |
3045 | const char __user *buf, int in_len, |
3046 | int out_len) | |
3047 | { | |
3048 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 3049 | struct ib_uqp_object *obj; |
bc38a6ab | 3050 | struct ib_qp *qp; |
f4e40156 | 3051 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
3052 | int ret = -EINVAL; |
3053 | ||
3054 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3055 | return -EFAULT; | |
3056 | ||
e214a0fe | 3057 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
3058 | if (!qp) |
3059 | return -EINVAL; | |
bc38a6ab | 3060 | |
f4e40156 JM |
3061 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
3062 | if (ret) | |
9ead190b | 3063 | goto out_put; |
f4e40156 | 3064 | |
9ead190b | 3065 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 3066 | |
9ead190b | 3067 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
3068 | if (cmd.mlid == mcast->lid && |
3069 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
3070 | list_del(&mcast->list); | |
3071 | kfree(mcast); | |
3072 | break; | |
3073 | } | |
3074 | ||
9ead190b | 3075 | out_put: |
e214a0fe | 3076 | put_qp_write(qp); |
bc38a6ab RD |
3077 | |
3078 | return ret ? ret : in_len; | |
3079 | } | |
f520ba5a | 3080 | |
15dfbd6b MG |
3081 | static size_t kern_spec_filter_sz(struct ib_uverbs_flow_spec_hdr *spec) |
3082 | { | |
3083 | /* Returns user space filter size, includes padding */ | |
3084 | return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2; | |
3085 | } | |
3086 | ||
3087 | static ssize_t spec_filter_size(void *kern_spec_filter, u16 kern_filter_size, | |
3088 | u16 ib_real_filter_sz) | |
3089 | { | |
3090 | /* | |
3091 | * User space filter structures must be 64 bit aligned, otherwise this | |
3092 | * may pass, but we won't handle additional new attributes. | |
3093 | */ | |
3094 | ||
3095 | if (kern_filter_size > ib_real_filter_sz) { | |
3096 | if (memchr_inv(kern_spec_filter + | |
3097 | ib_real_filter_sz, 0, | |
3098 | kern_filter_size - ib_real_filter_sz)) | |
3099 | return -EINVAL; | |
3100 | return ib_real_filter_sz; | |
3101 | } | |
3102 | return kern_filter_size; | |
3103 | } | |
3104 | ||
b68c9560 | 3105 | static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, |
436f2ad0 HHZ |
3106 | union ib_flow_spec *ib_spec) |
3107 | { | |
15dfbd6b MG |
3108 | ssize_t actual_filter_sz; |
3109 | ssize_t kern_filter_sz; | |
3110 | ssize_t ib_filter_sz; | |
3111 | void *kern_spec_mask; | |
3112 | void *kern_spec_val; | |
3113 | ||
c780d82a YD |
3114 | if (kern_spec->reserved) |
3115 | return -EINVAL; | |
3116 | ||
436f2ad0 HHZ |
3117 | ib_spec->type = kern_spec->type; |
3118 | ||
15dfbd6b MG |
3119 | kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr); |
3120 | /* User flow spec size must be aligned to 4 bytes */ | |
3121 | if (kern_filter_sz != ALIGN(kern_filter_sz, 4)) | |
3122 | return -EINVAL; | |
3123 | ||
3124 | kern_spec_val = (void *)kern_spec + | |
3125 | sizeof(struct ib_uverbs_flow_spec_hdr); | |
3126 | kern_spec_mask = kern_spec_val + kern_filter_sz; | |
3127 | ||
436f2ad0 HHZ |
3128 | switch (ib_spec->type) { |
3129 | case IB_FLOW_SPEC_ETH: | |
15dfbd6b MG |
3130 | ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz); |
3131 | actual_filter_sz = spec_filter_size(kern_spec_mask, | |
3132 | kern_filter_sz, | |
3133 | ib_filter_sz); | |
3134 | if (actual_filter_sz <= 0) | |
436f2ad0 | 3135 | return -EINVAL; |
15dfbd6b MG |
3136 | ib_spec->size = sizeof(struct ib_flow_spec_eth); |
3137 | memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz); | |
3138 | memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz); | |
436f2ad0 HHZ |
3139 | break; |
3140 | case IB_FLOW_SPEC_IPV4: | |
15dfbd6b MG |
3141 | ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz); |
3142 | actual_filter_sz = spec_filter_size(kern_spec_mask, | |
3143 | kern_filter_sz, | |
3144 | ib_filter_sz); | |
3145 | if (actual_filter_sz <= 0) | |
436f2ad0 | 3146 | return -EINVAL; |
15dfbd6b MG |
3147 | ib_spec->size = sizeof(struct ib_flow_spec_ipv4); |
3148 | memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz); | |
3149 | memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz); | |
436f2ad0 | 3150 | break; |
4c2aae71 | 3151 | case IB_FLOW_SPEC_IPV6: |
15dfbd6b MG |
3152 | ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz); |
3153 | actual_filter_sz = spec_filter_size(kern_spec_mask, | |
3154 | kern_filter_sz, | |
3155 | ib_filter_sz); | |
3156 | if (actual_filter_sz <= 0) | |
4c2aae71 | 3157 | return -EINVAL; |
15dfbd6b MG |
3158 | ib_spec->size = sizeof(struct ib_flow_spec_ipv6); |
3159 | memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz); | |
3160 | memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz); | |
a72c6a2b MG |
3161 | |
3162 | if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) || | |
3163 | (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20)) | |
3164 | return -EINVAL; | |
4c2aae71 | 3165 | break; |
436f2ad0 HHZ |
3166 | case IB_FLOW_SPEC_TCP: |
3167 | case IB_FLOW_SPEC_UDP: | |
15dfbd6b MG |
3168 | ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz); |
3169 | actual_filter_sz = spec_filter_size(kern_spec_mask, | |
3170 | kern_filter_sz, | |
3171 | ib_filter_sz); | |
3172 | if (actual_filter_sz <= 0) | |
436f2ad0 | 3173 | return -EINVAL; |
15dfbd6b MG |
3174 | ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp); |
3175 | memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz); | |
3176 | memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz); | |
436f2ad0 HHZ |
3177 | break; |
3178 | default: | |
3179 | return -EINVAL; | |
3180 | } | |
3181 | return 0; | |
3182 | } | |
3183 | ||
f213c052 YH |
3184 | int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file, |
3185 | struct ib_device *ib_dev, | |
3186 | struct ib_udata *ucore, | |
3187 | struct ib_udata *uhw) | |
3188 | { | |
3189 | struct ib_uverbs_ex_create_wq cmd = {}; | |
3190 | struct ib_uverbs_ex_create_wq_resp resp = {}; | |
3191 | struct ib_uwq_object *obj; | |
3192 | int err = 0; | |
3193 | struct ib_cq *cq; | |
3194 | struct ib_pd *pd; | |
3195 | struct ib_wq *wq; | |
3196 | struct ib_wq_init_attr wq_init_attr = {}; | |
3197 | size_t required_cmd_sz; | |
3198 | size_t required_resp_len; | |
3199 | ||
3200 | required_cmd_sz = offsetof(typeof(cmd), max_sge) + sizeof(cmd.max_sge); | |
3201 | required_resp_len = offsetof(typeof(resp), wqn) + sizeof(resp.wqn); | |
3202 | ||
3203 | if (ucore->inlen < required_cmd_sz) | |
3204 | return -EINVAL; | |
3205 | ||
3206 | if (ucore->outlen < required_resp_len) | |
3207 | return -ENOSPC; | |
3208 | ||
3209 | if (ucore->inlen > sizeof(cmd) && | |
3210 | !ib_is_udata_cleared(ucore, sizeof(cmd), | |
3211 | ucore->inlen - sizeof(cmd))) | |
3212 | return -EOPNOTSUPP; | |
3213 | ||
3214 | err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); | |
3215 | if (err) | |
3216 | return err; | |
3217 | ||
3218 | if (cmd.comp_mask) | |
3219 | return -EOPNOTSUPP; | |
3220 | ||
3221 | obj = kmalloc(sizeof(*obj), GFP_KERNEL); | |
3222 | if (!obj) | |
3223 | return -ENOMEM; | |
3224 | ||
3225 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, | |
3226 | &wq_lock_class); | |
3227 | down_write(&obj->uevent.uobject.mutex); | |
3228 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
3229 | if (!pd) { | |
3230 | err = -EINVAL; | |
3231 | goto err_uobj; | |
3232 | } | |
3233 | ||
3234 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); | |
3235 | if (!cq) { | |
3236 | err = -EINVAL; | |
3237 | goto err_put_pd; | |
3238 | } | |
3239 | ||
3240 | wq_init_attr.cq = cq; | |
3241 | wq_init_attr.max_sge = cmd.max_sge; | |
3242 | wq_init_attr.max_wr = cmd.max_wr; | |
3243 | wq_init_attr.wq_context = file; | |
3244 | wq_init_attr.wq_type = cmd.wq_type; | |
3245 | wq_init_attr.event_handler = ib_uverbs_wq_event_handler; | |
3246 | obj->uevent.events_reported = 0; | |
3247 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
3248 | wq = pd->device->create_wq(pd, &wq_init_attr, uhw); | |
3249 | if (IS_ERR(wq)) { | |
3250 | err = PTR_ERR(wq); | |
3251 | goto err_put_cq; | |
3252 | } | |
3253 | ||
3254 | wq->uobject = &obj->uevent.uobject; | |
3255 | obj->uevent.uobject.object = wq; | |
3256 | wq->wq_type = wq_init_attr.wq_type; | |
3257 | wq->cq = cq; | |
3258 | wq->pd = pd; | |
3259 | wq->device = pd->device; | |
3260 | wq->wq_context = wq_init_attr.wq_context; | |
3261 | atomic_set(&wq->usecnt, 0); | |
3262 | atomic_inc(&pd->usecnt); | |
3263 | atomic_inc(&cq->usecnt); | |
3264 | wq->uobject = &obj->uevent.uobject; | |
3265 | obj->uevent.uobject.object = wq; | |
3266 | err = idr_add_uobj(&ib_uverbs_wq_idr, &obj->uevent.uobject); | |
3267 | if (err) | |
3268 | goto destroy_wq; | |
3269 | ||
3270 | memset(&resp, 0, sizeof(resp)); | |
3271 | resp.wq_handle = obj->uevent.uobject.id; | |
3272 | resp.max_sge = wq_init_attr.max_sge; | |
3273 | resp.max_wr = wq_init_attr.max_wr; | |
3274 | resp.wqn = wq->wq_num; | |
3275 | resp.response_length = required_resp_len; | |
3276 | err = ib_copy_to_udata(ucore, | |
3277 | &resp, resp.response_length); | |
3278 | if (err) | |
3279 | goto err_copy; | |
3280 | ||
3281 | put_pd_read(pd); | |
3282 | put_cq_read(cq); | |
3283 | ||
3284 | mutex_lock(&file->mutex); | |
3285 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->wq_list); | |
3286 | mutex_unlock(&file->mutex); | |
3287 | ||
3288 | obj->uevent.uobject.live = 1; | |
3289 | up_write(&obj->uevent.uobject.mutex); | |
3290 | return 0; | |
3291 | ||
3292 | err_copy: | |
3293 | idr_remove_uobj(&ib_uverbs_wq_idr, &obj->uevent.uobject); | |
3294 | destroy_wq: | |
3295 | ib_destroy_wq(wq); | |
3296 | err_put_cq: | |
3297 | put_cq_read(cq); | |
3298 | err_put_pd: | |
3299 | put_pd_read(pd); | |
3300 | err_uobj: | |
3301 | put_uobj_write(&obj->uevent.uobject); | |
3302 | ||
3303 | return err; | |
3304 | } | |
3305 | ||
3306 | int ib_uverbs_ex_destroy_wq(struct ib_uverbs_file *file, | |
3307 | struct ib_device *ib_dev, | |
3308 | struct ib_udata *ucore, | |
3309 | struct ib_udata *uhw) | |
3310 | { | |
3311 | struct ib_uverbs_ex_destroy_wq cmd = {}; | |
3312 | struct ib_uverbs_ex_destroy_wq_resp resp = {}; | |
3313 | struct ib_wq *wq; | |
3314 | struct ib_uobject *uobj; | |
3315 | struct ib_uwq_object *obj; | |
3316 | size_t required_cmd_sz; | |
3317 | size_t required_resp_len; | |
3318 | int ret; | |
3319 | ||
3320 | required_cmd_sz = offsetof(typeof(cmd), wq_handle) + sizeof(cmd.wq_handle); | |
3321 | required_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved); | |
3322 | ||
3323 | if (ucore->inlen < required_cmd_sz) | |
3324 | return -EINVAL; | |
3325 | ||
3326 | if (ucore->outlen < required_resp_len) | |
3327 | return -ENOSPC; | |
3328 | ||
3329 | if (ucore->inlen > sizeof(cmd) && | |
3330 | !ib_is_udata_cleared(ucore, sizeof(cmd), | |
3331 | ucore->inlen - sizeof(cmd))) | |
3332 | return -EOPNOTSUPP; | |
3333 | ||
3334 | ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); | |
3335 | if (ret) | |
3336 | return ret; | |
3337 | ||
3338 | if (cmd.comp_mask) | |
3339 | return -EOPNOTSUPP; | |
3340 | ||
3341 | resp.response_length = required_resp_len; | |
3342 | uobj = idr_write_uobj(&ib_uverbs_wq_idr, cmd.wq_handle, | |
3343 | file->ucontext); | |
3344 | if (!uobj) | |
3345 | return -EINVAL; | |
3346 | ||
3347 | wq = uobj->object; | |
3348 | obj = container_of(uobj, struct ib_uwq_object, uevent.uobject); | |
3349 | ret = ib_destroy_wq(wq); | |
3350 | if (!ret) | |
3351 | uobj->live = 0; | |
3352 | ||
3353 | put_uobj_write(uobj); | |
3354 | if (ret) | |
3355 | return ret; | |
3356 | ||
3357 | idr_remove_uobj(&ib_uverbs_wq_idr, uobj); | |
3358 | ||
3359 | mutex_lock(&file->mutex); | |
3360 | list_del(&uobj->list); | |
3361 | mutex_unlock(&file->mutex); | |
3362 | ||
3363 | ib_uverbs_release_uevent(file, &obj->uevent); | |
3364 | resp.events_reported = obj->uevent.events_reported; | |
3365 | put_uobj(uobj); | |
3366 | ||
3367 | ret = ib_copy_to_udata(ucore, &resp, resp.response_length); | |
3368 | if (ret) | |
3369 | return ret; | |
3370 | ||
3371 | return 0; | |
3372 | } | |
3373 | ||
3374 | int ib_uverbs_ex_modify_wq(struct ib_uverbs_file *file, | |
3375 | struct ib_device *ib_dev, | |
3376 | struct ib_udata *ucore, | |
3377 | struct ib_udata *uhw) | |
3378 | { | |
3379 | struct ib_uverbs_ex_modify_wq cmd = {}; | |
3380 | struct ib_wq *wq; | |
3381 | struct ib_wq_attr wq_attr = {}; | |
3382 | size_t required_cmd_sz; | |
3383 | int ret; | |
3384 | ||
3385 | required_cmd_sz = offsetof(typeof(cmd), curr_wq_state) + sizeof(cmd.curr_wq_state); | |
3386 | if (ucore->inlen < required_cmd_sz) | |
3387 | return -EINVAL; | |
3388 | ||
3389 | if (ucore->inlen > sizeof(cmd) && | |
3390 | !ib_is_udata_cleared(ucore, sizeof(cmd), | |
3391 | ucore->inlen - sizeof(cmd))) | |
3392 | return -EOPNOTSUPP; | |
3393 | ||
3394 | ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); | |
3395 | if (ret) | |
3396 | return ret; | |
3397 | ||
3398 | if (!cmd.attr_mask) | |
3399 | return -EINVAL; | |
3400 | ||
3401 | if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE)) | |
3402 | return -EINVAL; | |
3403 | ||
3404 | wq = idr_read_wq(cmd.wq_handle, file->ucontext); | |
3405 | if (!wq) | |
3406 | return -EINVAL; | |
3407 | ||
3408 | wq_attr.curr_wq_state = cmd.curr_wq_state; | |
3409 | wq_attr.wq_state = cmd.wq_state; | |
3410 | ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, uhw); | |
3411 | put_wq_read(wq); | |
3412 | return ret; | |
3413 | } | |
3414 | ||
de019a94 YH |
3415 | int ib_uverbs_ex_create_rwq_ind_table(struct ib_uverbs_file *file, |
3416 | struct ib_device *ib_dev, | |
3417 | struct ib_udata *ucore, | |
3418 | struct ib_udata *uhw) | |
3419 | { | |
3420 | struct ib_uverbs_ex_create_rwq_ind_table cmd = {}; | |
3421 | struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {}; | |
3422 | struct ib_uobject *uobj; | |
3423 | int err = 0; | |
3424 | struct ib_rwq_ind_table_init_attr init_attr = {}; | |
3425 | struct ib_rwq_ind_table *rwq_ind_tbl; | |
3426 | struct ib_wq **wqs = NULL; | |
3427 | u32 *wqs_handles = NULL; | |
3428 | struct ib_wq *wq = NULL; | |
3429 | int i, j, num_read_wqs; | |
3430 | u32 num_wq_handles; | |
3431 | u32 expected_in_size; | |
3432 | size_t required_cmd_sz_header; | |
3433 | size_t required_resp_len; | |
3434 | ||
3435 | required_cmd_sz_header = offsetof(typeof(cmd), log_ind_tbl_size) + sizeof(cmd.log_ind_tbl_size); | |
3436 | required_resp_len = offsetof(typeof(resp), ind_tbl_num) + sizeof(resp.ind_tbl_num); | |
3437 | ||
3438 | if (ucore->inlen < required_cmd_sz_header) | |
3439 | return -EINVAL; | |
3440 | ||
3441 | if (ucore->outlen < required_resp_len) | |
3442 | return -ENOSPC; | |
3443 | ||
3444 | err = ib_copy_from_udata(&cmd, ucore, required_cmd_sz_header); | |
3445 | if (err) | |
3446 | return err; | |
3447 | ||
3448 | ucore->inbuf += required_cmd_sz_header; | |
3449 | ucore->inlen -= required_cmd_sz_header; | |
3450 | ||
3451 | if (cmd.comp_mask) | |
3452 | return -EOPNOTSUPP; | |
3453 | ||
3454 | if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE) | |
3455 | return -EINVAL; | |
3456 | ||
3457 | num_wq_handles = 1 << cmd.log_ind_tbl_size; | |
3458 | expected_in_size = num_wq_handles * sizeof(__u32); | |
3459 | if (num_wq_handles == 1) | |
3460 | /* input size for wq handles is u64 aligned */ | |
3461 | expected_in_size += sizeof(__u32); | |
3462 | ||
3463 | if (ucore->inlen < expected_in_size) | |
3464 | return -EINVAL; | |
3465 | ||
3466 | if (ucore->inlen > expected_in_size && | |
3467 | !ib_is_udata_cleared(ucore, expected_in_size, | |
3468 | ucore->inlen - expected_in_size)) | |
3469 | return -EOPNOTSUPP; | |
3470 | ||
3471 | wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles), | |
3472 | GFP_KERNEL); | |
3473 | if (!wqs_handles) | |
3474 | return -ENOMEM; | |
3475 | ||
3476 | err = ib_copy_from_udata(wqs_handles, ucore, | |
3477 | num_wq_handles * sizeof(__u32)); | |
3478 | if (err) | |
3479 | goto err_free; | |
3480 | ||
3481 | wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL); | |
3482 | if (!wqs) { | |
3483 | err = -ENOMEM; | |
3484 | goto err_free; | |
3485 | } | |
3486 | ||
3487 | for (num_read_wqs = 0; num_read_wqs < num_wq_handles; | |
3488 | num_read_wqs++) { | |
3489 | wq = idr_read_wq(wqs_handles[num_read_wqs], file->ucontext); | |
3490 | if (!wq) { | |
3491 | err = -EINVAL; | |
3492 | goto put_wqs; | |
3493 | } | |
3494 | ||
3495 | wqs[num_read_wqs] = wq; | |
3496 | } | |
3497 | ||
3498 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
3499 | if (!uobj) { | |
3500 | err = -ENOMEM; | |
3501 | goto put_wqs; | |
3502 | } | |
3503 | ||
3504 | init_uobj(uobj, 0, file->ucontext, &rwq_ind_table_lock_class); | |
3505 | down_write(&uobj->mutex); | |
3506 | init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size; | |
3507 | init_attr.ind_tbl = wqs; | |
3508 | rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, uhw); | |
3509 | ||
3510 | if (IS_ERR(rwq_ind_tbl)) { | |
3511 | err = PTR_ERR(rwq_ind_tbl); | |
3512 | goto err_uobj; | |
3513 | } | |
3514 | ||
3515 | rwq_ind_tbl->ind_tbl = wqs; | |
3516 | rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size; | |
3517 | rwq_ind_tbl->uobject = uobj; | |
3518 | uobj->object = rwq_ind_tbl; | |
3519 | rwq_ind_tbl->device = ib_dev; | |
3520 | atomic_set(&rwq_ind_tbl->usecnt, 0); | |
3521 | ||
3522 | for (i = 0; i < num_wq_handles; i++) | |
3523 | atomic_inc(&wqs[i]->usecnt); | |
3524 | ||
3525 | err = idr_add_uobj(&ib_uverbs_rwq_ind_tbl_idr, uobj); | |
3526 | if (err) | |
3527 | goto destroy_ind_tbl; | |
3528 | ||
3529 | resp.ind_tbl_handle = uobj->id; | |
3530 | resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num; | |
3531 | resp.response_length = required_resp_len; | |
3532 | ||
3533 | err = ib_copy_to_udata(ucore, | |
3534 | &resp, resp.response_length); | |
3535 | if (err) | |
3536 | goto err_copy; | |
3537 | ||
3538 | kfree(wqs_handles); | |
3539 | ||
3540 | for (j = 0; j < num_read_wqs; j++) | |
3541 | put_wq_read(wqs[j]); | |
3542 | ||
3543 | mutex_lock(&file->mutex); | |
3544 | list_add_tail(&uobj->list, &file->ucontext->rwq_ind_tbl_list); | |
3545 | mutex_unlock(&file->mutex); | |
3546 | ||
3547 | uobj->live = 1; | |
3548 | ||
3549 | up_write(&uobj->mutex); | |
3550 | return 0; | |
3551 | ||
3552 | err_copy: | |
3553 | idr_remove_uobj(&ib_uverbs_rwq_ind_tbl_idr, uobj); | |
3554 | destroy_ind_tbl: | |
3555 | ib_destroy_rwq_ind_table(rwq_ind_tbl); | |
3556 | err_uobj: | |
3557 | put_uobj_write(uobj); | |
3558 | put_wqs: | |
3559 | for (j = 0; j < num_read_wqs; j++) | |
3560 | put_wq_read(wqs[j]); | |
3561 | err_free: | |
3562 | kfree(wqs_handles); | |
3563 | kfree(wqs); | |
3564 | return err; | |
3565 | } | |
3566 | ||
3567 | int ib_uverbs_ex_destroy_rwq_ind_table(struct ib_uverbs_file *file, | |
3568 | struct ib_device *ib_dev, | |
3569 | struct ib_udata *ucore, | |
3570 | struct ib_udata *uhw) | |
3571 | { | |
3572 | struct ib_uverbs_ex_destroy_rwq_ind_table cmd = {}; | |
3573 | struct ib_rwq_ind_table *rwq_ind_tbl; | |
3574 | struct ib_uobject *uobj; | |
3575 | int ret; | |
3576 | struct ib_wq **ind_tbl; | |
3577 | size_t required_cmd_sz; | |
3578 | ||
3579 | required_cmd_sz = offsetof(typeof(cmd), ind_tbl_handle) + sizeof(cmd.ind_tbl_handle); | |
3580 | ||
3581 | if (ucore->inlen < required_cmd_sz) | |
3582 | return -EINVAL; | |
3583 | ||
3584 | if (ucore->inlen > sizeof(cmd) && | |
3585 | !ib_is_udata_cleared(ucore, sizeof(cmd), | |
3586 | ucore->inlen - sizeof(cmd))) | |
3587 | return -EOPNOTSUPP; | |
3588 | ||
3589 | ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen)); | |
3590 | if (ret) | |
3591 | return ret; | |
3592 | ||
3593 | if (cmd.comp_mask) | |
3594 | return -EOPNOTSUPP; | |
3595 | ||
3596 | uobj = idr_write_uobj(&ib_uverbs_rwq_ind_tbl_idr, cmd.ind_tbl_handle, | |
3597 | file->ucontext); | |
3598 | if (!uobj) | |
3599 | return -EINVAL; | |
3600 | rwq_ind_tbl = uobj->object; | |
3601 | ind_tbl = rwq_ind_tbl->ind_tbl; | |
3602 | ||
3603 | ret = ib_destroy_rwq_ind_table(rwq_ind_tbl); | |
3604 | if (!ret) | |
3605 | uobj->live = 0; | |
3606 | ||
3607 | put_uobj_write(uobj); | |
3608 | ||
3609 | if (ret) | |
3610 | return ret; | |
3611 | ||
3612 | idr_remove_uobj(&ib_uverbs_rwq_ind_tbl_idr, uobj); | |
3613 | ||
3614 | mutex_lock(&file->mutex); | |
3615 | list_del(&uobj->list); | |
3616 | mutex_unlock(&file->mutex); | |
3617 | ||
3618 | put_uobj(uobj); | |
3619 | kfree(ind_tbl); | |
3620 | return ret; | |
3621 | } | |
3622 | ||
f21519b2 | 3623 | int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, |
057aec0d | 3624 | struct ib_device *ib_dev, |
f21519b2 YD |
3625 | struct ib_udata *ucore, |
3626 | struct ib_udata *uhw) | |
436f2ad0 HHZ |
3627 | { |
3628 | struct ib_uverbs_create_flow cmd; | |
3629 | struct ib_uverbs_create_flow_resp resp; | |
3630 | struct ib_uobject *uobj; | |
3631 | struct ib_flow *flow_id; | |
d82693da | 3632 | struct ib_uverbs_flow_attr *kern_flow_attr; |
436f2ad0 HHZ |
3633 | struct ib_flow_attr *flow_attr; |
3634 | struct ib_qp *qp; | |
3635 | int err = 0; | |
3636 | void *kern_spec; | |
3637 | void *ib_spec; | |
3638 | int i; | |
436f2ad0 | 3639 | |
6bcca3d4 YD |
3640 | if (ucore->inlen < sizeof(cmd)) |
3641 | return -EINVAL; | |
3642 | ||
f21519b2 | 3643 | if (ucore->outlen < sizeof(resp)) |
436f2ad0 HHZ |
3644 | return -ENOSPC; |
3645 | ||
f21519b2 YD |
3646 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
3647 | if (err) | |
3648 | return err; | |
3649 | ||
3650 | ucore->inbuf += sizeof(cmd); | |
3651 | ucore->inlen -= sizeof(cmd); | |
436f2ad0 | 3652 | |
22878dbc MB |
3653 | if (cmd.comp_mask) |
3654 | return -EINVAL; | |
3655 | ||
e3b6d8cf | 3656 | if (!capable(CAP_NET_RAW)) |
436f2ad0 HHZ |
3657 | return -EPERM; |
3658 | ||
a3100a78 MV |
3659 | if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED) |
3660 | return -EINVAL; | |
3661 | ||
3662 | if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) && | |
3663 | ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) || | |
3664 | (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT))) | |
3665 | return -EINVAL; | |
3666 | ||
f8848274 | 3667 | if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) |
22878dbc MB |
3668 | return -EINVAL; |
3669 | ||
f21519b2 | 3670 | if (cmd.flow_attr.size > ucore->inlen || |
f8848274 | 3671 | cmd.flow_attr.size > |
b68c9560 | 3672 | (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) |
22878dbc MB |
3673 | return -EINVAL; |
3674 | ||
c780d82a YD |
3675 | if (cmd.flow_attr.reserved[0] || |
3676 | cmd.flow_attr.reserved[1]) | |
3677 | return -EINVAL; | |
3678 | ||
436f2ad0 | 3679 | if (cmd.flow_attr.num_of_specs) { |
f8848274 MB |
3680 | kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, |
3681 | GFP_KERNEL); | |
436f2ad0 HHZ |
3682 | if (!kern_flow_attr) |
3683 | return -ENOMEM; | |
3684 | ||
3685 | memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr)); | |
f21519b2 YD |
3686 | err = ib_copy_from_udata(kern_flow_attr + 1, ucore, |
3687 | cmd.flow_attr.size); | |
3688 | if (err) | |
436f2ad0 | 3689 | goto err_free_attr; |
436f2ad0 HHZ |
3690 | } else { |
3691 | kern_flow_attr = &cmd.flow_attr; | |
436f2ad0 HHZ |
3692 | } |
3693 | ||
3694 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
3695 | if (!uobj) { | |
3696 | err = -ENOMEM; | |
3697 | goto err_free_attr; | |
3698 | } | |
3699 | init_uobj(uobj, 0, file->ucontext, &rule_lock_class); | |
3700 | down_write(&uobj->mutex); | |
3701 | ||
3702 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); | |
3703 | if (!qp) { | |
3704 | err = -EINVAL; | |
3705 | goto err_uobj; | |
3706 | } | |
3707 | ||
15dfbd6b MG |
3708 | flow_attr = kzalloc(sizeof(*flow_attr) + cmd.flow_attr.num_of_specs * |
3709 | sizeof(union ib_flow_spec), GFP_KERNEL); | |
436f2ad0 HHZ |
3710 | if (!flow_attr) { |
3711 | err = -ENOMEM; | |
3712 | goto err_put; | |
3713 | } | |
3714 | ||
3715 | flow_attr->type = kern_flow_attr->type; | |
3716 | flow_attr->priority = kern_flow_attr->priority; | |
3717 | flow_attr->num_of_specs = kern_flow_attr->num_of_specs; | |
3718 | flow_attr->port = kern_flow_attr->port; | |
3719 | flow_attr->flags = kern_flow_attr->flags; | |
3720 | flow_attr->size = sizeof(*flow_attr); | |
3721 | ||
3722 | kern_spec = kern_flow_attr + 1; | |
3723 | ib_spec = flow_attr + 1; | |
f8848274 | 3724 | for (i = 0; i < flow_attr->num_of_specs && |
b68c9560 | 3725 | cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) && |
f8848274 | 3726 | cmd.flow_attr.size >= |
b68c9560 | 3727 | ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) { |
436f2ad0 HHZ |
3728 | err = kern_spec_to_ib_spec(kern_spec, ib_spec); |
3729 | if (err) | |
3730 | goto err_free; | |
3731 | flow_attr->size += | |
3732 | ((union ib_flow_spec *) ib_spec)->size; | |
b68c9560 YD |
3733 | cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size; |
3734 | kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size; | |
436f2ad0 HHZ |
3735 | ib_spec += ((union ib_flow_spec *) ib_spec)->size; |
3736 | } | |
f8848274 MB |
3737 | if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { |
3738 | pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", | |
3739 | i, cmd.flow_attr.size); | |
98a37510 | 3740 | err = -EINVAL; |
436f2ad0 HHZ |
3741 | goto err_free; |
3742 | } | |
3743 | flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER); | |
3744 | if (IS_ERR(flow_id)) { | |
3745 | err = PTR_ERR(flow_id); | |
3746 | goto err_free; | |
3747 | } | |
436f2ad0 HHZ |
3748 | flow_id->uobject = uobj; |
3749 | uobj->object = flow_id; | |
3750 | ||
3751 | err = idr_add_uobj(&ib_uverbs_rule_idr, uobj); | |
3752 | if (err) | |
3753 | goto destroy_flow; | |
3754 | ||
3755 | memset(&resp, 0, sizeof(resp)); | |
3756 | resp.flow_handle = uobj->id; | |
3757 | ||
f21519b2 YD |
3758 | err = ib_copy_to_udata(ucore, |
3759 | &resp, sizeof(resp)); | |
3760 | if (err) | |
436f2ad0 | 3761 | goto err_copy; |
436f2ad0 HHZ |
3762 | |
3763 | put_qp_read(qp); | |
3764 | mutex_lock(&file->mutex); | |
3765 | list_add_tail(&uobj->list, &file->ucontext->rule_list); | |
3766 | mutex_unlock(&file->mutex); | |
3767 | ||
3768 | uobj->live = 1; | |
3769 | ||
3770 | up_write(&uobj->mutex); | |
3771 | kfree(flow_attr); | |
3772 | if (cmd.flow_attr.num_of_specs) | |
3773 | kfree(kern_flow_attr); | |
f21519b2 | 3774 | return 0; |
436f2ad0 HHZ |
3775 | err_copy: |
3776 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
3777 | destroy_flow: | |
3778 | ib_destroy_flow(flow_id); | |
3779 | err_free: | |
3780 | kfree(flow_attr); | |
3781 | err_put: | |
3782 | put_qp_read(qp); | |
3783 | err_uobj: | |
3784 | put_uobj_write(uobj); | |
3785 | err_free_attr: | |
3786 | if (cmd.flow_attr.num_of_specs) | |
3787 | kfree(kern_flow_attr); | |
3788 | return err; | |
3789 | } | |
3790 | ||
f21519b2 | 3791 | int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file, |
057aec0d | 3792 | struct ib_device *ib_dev, |
f21519b2 YD |
3793 | struct ib_udata *ucore, |
3794 | struct ib_udata *uhw) | |
3795 | { | |
436f2ad0 HHZ |
3796 | struct ib_uverbs_destroy_flow cmd; |
3797 | struct ib_flow *flow_id; | |
3798 | struct ib_uobject *uobj; | |
3799 | int ret; | |
3800 | ||
6bcca3d4 YD |
3801 | if (ucore->inlen < sizeof(cmd)) |
3802 | return -EINVAL; | |
3803 | ||
f21519b2 YD |
3804 | ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
3805 | if (ret) | |
3806 | return ret; | |
436f2ad0 | 3807 | |
2782c2d3 YD |
3808 | if (cmd.comp_mask) |
3809 | return -EINVAL; | |
3810 | ||
436f2ad0 HHZ |
3811 | uobj = idr_write_uobj(&ib_uverbs_rule_idr, cmd.flow_handle, |
3812 | file->ucontext); | |
3813 | if (!uobj) | |
3814 | return -EINVAL; | |
3815 | flow_id = uobj->object; | |
3816 | ||
3817 | ret = ib_destroy_flow(flow_id); | |
3818 | if (!ret) | |
3819 | uobj->live = 0; | |
3820 | ||
3821 | put_uobj_write(uobj); | |
3822 | ||
3823 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
3824 | ||
3825 | mutex_lock(&file->mutex); | |
3826 | list_del(&uobj->list); | |
3827 | mutex_unlock(&file->mutex); | |
3828 | ||
3829 | put_uobj(uobj); | |
3830 | ||
f21519b2 | 3831 | return ret; |
436f2ad0 HHZ |
3832 | } |
3833 | ||
c89d1bed | 3834 | static int __uverbs_create_xsrq(struct ib_uverbs_file *file, |
057aec0d | 3835 | struct ib_device *ib_dev, |
c89d1bed SH |
3836 | struct ib_uverbs_create_xsrq *cmd, |
3837 | struct ib_udata *udata) | |
f520ba5a | 3838 | { |
f520ba5a | 3839 | struct ib_uverbs_create_srq_resp resp; |
8541f8de | 3840 | struct ib_usrq_object *obj; |
f520ba5a RD |
3841 | struct ib_pd *pd; |
3842 | struct ib_srq *srq; | |
8541f8de | 3843 | struct ib_uobject *uninitialized_var(xrcd_uobj); |
f520ba5a RD |
3844 | struct ib_srq_init_attr attr; |
3845 | int ret; | |
3846 | ||
9ead190b RD |
3847 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
3848 | if (!obj) | |
f520ba5a RD |
3849 | return -ENOMEM; |
3850 | ||
3bea57a5 | 3851 | init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_class); |
8541f8de | 3852 | down_write(&obj->uevent.uobject.mutex); |
f520ba5a | 3853 | |
8541f8de | 3854 | if (cmd->srq_type == IB_SRQT_XRC) { |
8541f8de SH |
3855 | attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj); |
3856 | if (!attr.ext.xrc.xrcd) { | |
3857 | ret = -EINVAL; | |
5909ce54 | 3858 | goto err; |
8541f8de SH |
3859 | } |
3860 | ||
3861 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); | |
3862 | atomic_inc(&obj->uxrcd->refcnt); | |
5909ce54 RD |
3863 | |
3864 | attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0); | |
3865 | if (!attr.ext.xrc.cq) { | |
3866 | ret = -EINVAL; | |
3867 | goto err_put_xrcd; | |
3868 | } | |
3869 | } | |
3870 | ||
3871 | pd = idr_read_pd(cmd->pd_handle, file->ucontext); | |
3872 | if (!pd) { | |
3873 | ret = -EINVAL; | |
3874 | goto err_put_cq; | |
8541f8de SH |
3875 | } |
3876 | ||
f520ba5a RD |
3877 | attr.event_handler = ib_uverbs_srq_event_handler; |
3878 | attr.srq_context = file; | |
8541f8de SH |
3879 | attr.srq_type = cmd->srq_type; |
3880 | attr.attr.max_wr = cmd->max_wr; | |
3881 | attr.attr.max_sge = cmd->max_sge; | |
3882 | attr.attr.srq_limit = cmd->srq_limit; | |
f520ba5a | 3883 | |
8541f8de SH |
3884 | obj->uevent.events_reported = 0; |
3885 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
f520ba5a | 3886 | |
8541f8de | 3887 | srq = pd->device->create_srq(pd, &attr, udata); |
f520ba5a RD |
3888 | if (IS_ERR(srq)) { |
3889 | ret = PTR_ERR(srq); | |
ec924b47 | 3890 | goto err_put; |
f520ba5a RD |
3891 | } |
3892 | ||
8541f8de SH |
3893 | srq->device = pd->device; |
3894 | srq->pd = pd; | |
3895 | srq->srq_type = cmd->srq_type; | |
3896 | srq->uobject = &obj->uevent.uobject; | |
f520ba5a RD |
3897 | srq->event_handler = attr.event_handler; |
3898 | srq->srq_context = attr.srq_context; | |
8541f8de SH |
3899 | |
3900 | if (cmd->srq_type == IB_SRQT_XRC) { | |
3901 | srq->ext.xrc.cq = attr.ext.xrc.cq; | |
3902 | srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; | |
3903 | atomic_inc(&attr.ext.xrc.cq->usecnt); | |
3904 | atomic_inc(&attr.ext.xrc.xrcd->usecnt); | |
3905 | } | |
3906 | ||
f520ba5a RD |
3907 | atomic_inc(&pd->usecnt); |
3908 | atomic_set(&srq->usecnt, 0); | |
3909 | ||
8541f8de SH |
3910 | obj->uevent.uobject.object = srq; |
3911 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); | |
f520ba5a RD |
3912 | if (ret) |
3913 | goto err_destroy; | |
3914 | ||
9ead190b | 3915 | memset(&resp, 0, sizeof resp); |
8541f8de | 3916 | resp.srq_handle = obj->uevent.uobject.id; |
ea88fd16 DB |
3917 | resp.max_wr = attr.attr.max_wr; |
3918 | resp.max_sge = attr.attr.max_sge; | |
8541f8de SH |
3919 | if (cmd->srq_type == IB_SRQT_XRC) |
3920 | resp.srqn = srq->ext.xrc.srq_num; | |
f520ba5a | 3921 | |
8541f8de | 3922 | if (copy_to_user((void __user *) (unsigned long) cmd->response, |
f520ba5a RD |
3923 | &resp, sizeof resp)) { |
3924 | ret = -EFAULT; | |
9ead190b | 3925 | goto err_copy; |
f520ba5a RD |
3926 | } |
3927 | ||
8541f8de SH |
3928 | if (cmd->srq_type == IB_SRQT_XRC) { |
3929 | put_uobj_read(xrcd_uobj); | |
3930 | put_cq_read(attr.ext.xrc.cq); | |
3931 | } | |
9ead190b RD |
3932 | put_pd_read(pd); |
3933 | ||
95ed644f | 3934 | mutex_lock(&file->mutex); |
8541f8de | 3935 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list); |
95ed644f | 3936 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 3937 | |
8541f8de | 3938 | obj->uevent.uobject.live = 1; |
9ead190b | 3939 | |
8541f8de | 3940 | up_write(&obj->uevent.uobject.mutex); |
f520ba5a | 3941 | |
8541f8de | 3942 | return 0; |
f520ba5a | 3943 | |
9ead190b | 3944 | err_copy: |
8541f8de | 3945 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); |
f520ba5a RD |
3946 | |
3947 | err_destroy: | |
3948 | ib_destroy_srq(srq); | |
3949 | ||
ec924b47 | 3950 | err_put: |
5909ce54 | 3951 | put_pd_read(pd); |
8541f8de SH |
3952 | |
3953 | err_put_cq: | |
3954 | if (cmd->srq_type == IB_SRQT_XRC) | |
3955 | put_cq_read(attr.ext.xrc.cq); | |
3956 | ||
5909ce54 RD |
3957 | err_put_xrcd: |
3958 | if (cmd->srq_type == IB_SRQT_XRC) { | |
3959 | atomic_dec(&obj->uxrcd->refcnt); | |
3960 | put_uobj_read(xrcd_uobj); | |
3961 | } | |
ec924b47 | 3962 | |
9ead190b | 3963 | err: |
8541f8de | 3964 | put_uobj_write(&obj->uevent.uobject); |
f520ba5a RD |
3965 | return ret; |
3966 | } | |
3967 | ||
8541f8de | 3968 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, |
057aec0d | 3969 | struct ib_device *ib_dev, |
8541f8de SH |
3970 | const char __user *buf, int in_len, |
3971 | int out_len) | |
3972 | { | |
3973 | struct ib_uverbs_create_srq cmd; | |
3974 | struct ib_uverbs_create_xsrq xcmd; | |
3975 | struct ib_uverbs_create_srq_resp resp; | |
3976 | struct ib_udata udata; | |
3977 | int ret; | |
3978 | ||
3979 | if (out_len < sizeof resp) | |
3980 | return -ENOSPC; | |
3981 | ||
3982 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3983 | return -EFAULT; | |
3984 | ||
3985 | xcmd.response = cmd.response; | |
3986 | xcmd.user_handle = cmd.user_handle; | |
3987 | xcmd.srq_type = IB_SRQT_BASIC; | |
3988 | xcmd.pd_handle = cmd.pd_handle; | |
3989 | xcmd.max_wr = cmd.max_wr; | |
3990 | xcmd.max_sge = cmd.max_sge; | |
3991 | xcmd.srq_limit = cmd.srq_limit; | |
3992 | ||
3993 | INIT_UDATA(&udata, buf + sizeof cmd, | |
3994 | (unsigned long) cmd.response + sizeof resp, | |
3d943c9d MD |
3995 | in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr), |
3996 | out_len - sizeof resp); | |
8541f8de | 3997 | |
057aec0d | 3998 | ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata); |
8541f8de SH |
3999 | if (ret) |
4000 | return ret; | |
4001 | ||
4002 | return in_len; | |
4003 | } | |
4004 | ||
4005 | ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, | |
057aec0d | 4006 | struct ib_device *ib_dev, |
8541f8de SH |
4007 | const char __user *buf, int in_len, int out_len) |
4008 | { | |
4009 | struct ib_uverbs_create_xsrq cmd; | |
4010 | struct ib_uverbs_create_srq_resp resp; | |
4011 | struct ib_udata udata; | |
4012 | int ret; | |
4013 | ||
4014 | if (out_len < sizeof resp) | |
4015 | return -ENOSPC; | |
4016 | ||
4017 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
4018 | return -EFAULT; | |
4019 | ||
4020 | INIT_UDATA(&udata, buf + sizeof cmd, | |
4021 | (unsigned long) cmd.response + sizeof resp, | |
3d943c9d MD |
4022 | in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr), |
4023 | out_len - sizeof resp); | |
8541f8de | 4024 | |
057aec0d | 4025 | ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata); |
8541f8de SH |
4026 | if (ret) |
4027 | return ret; | |
4028 | ||
4029 | return in_len; | |
4030 | } | |
4031 | ||
f520ba5a | 4032 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, |
057aec0d | 4033 | struct ib_device *ib_dev, |
f520ba5a RD |
4034 | const char __user *buf, int in_len, |
4035 | int out_len) | |
4036 | { | |
4037 | struct ib_uverbs_modify_srq cmd; | |
9bc57e2d | 4038 | struct ib_udata udata; |
f520ba5a RD |
4039 | struct ib_srq *srq; |
4040 | struct ib_srq_attr attr; | |
4041 | int ret; | |
4042 | ||
4043 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
4044 | return -EFAULT; | |
4045 | ||
9bc57e2d RC |
4046 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
4047 | out_len); | |
4048 | ||
9ead190b RD |
4049 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
4050 | if (!srq) | |
4051 | return -EINVAL; | |
f520ba5a RD |
4052 | |
4053 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
4054 | attr.srq_limit = cmd.srq_limit; |
4055 | ||
9bc57e2d | 4056 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
f520ba5a | 4057 | |
9ead190b | 4058 | put_srq_read(srq); |
f520ba5a RD |
4059 | |
4060 | return ret ? ret : in_len; | |
4061 | } | |
4062 | ||
8bdb0e86 | 4063 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
057aec0d | 4064 | struct ib_device *ib_dev, |
8bdb0e86 DB |
4065 | const char __user *buf, |
4066 | int in_len, int out_len) | |
4067 | { | |
4068 | struct ib_uverbs_query_srq cmd; | |
4069 | struct ib_uverbs_query_srq_resp resp; | |
4070 | struct ib_srq_attr attr; | |
4071 | struct ib_srq *srq; | |
4072 | int ret; | |
4073 | ||
4074 | if (out_len < sizeof resp) | |
4075 | return -ENOSPC; | |
4076 | ||
4077 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
4078 | return -EFAULT; | |
4079 | ||
9ead190b RD |
4080 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
4081 | if (!srq) | |
4082 | return -EINVAL; | |
8bdb0e86 | 4083 | |
9ead190b | 4084 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 4085 | |
9ead190b | 4086 | put_srq_read(srq); |
8bdb0e86 DB |
4087 | |
4088 | if (ret) | |
9ead190b | 4089 | return ret; |
8bdb0e86 DB |
4090 | |
4091 | memset(&resp, 0, sizeof resp); | |
4092 | ||
4093 | resp.max_wr = attr.max_wr; | |
4094 | resp.max_sge = attr.max_sge; | |
4095 | resp.srq_limit = attr.srq_limit; | |
4096 | ||
4097 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
4098 | &resp, sizeof resp)) | |
9ead190b | 4099 | return -EFAULT; |
8bdb0e86 | 4100 | |
9ead190b | 4101 | return in_len; |
8bdb0e86 DB |
4102 | } |
4103 | ||
f520ba5a | 4104 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
057aec0d | 4105 | struct ib_device *ib_dev, |
f520ba5a RD |
4106 | const char __user *buf, int in_len, |
4107 | int out_len) | |
4108 | { | |
63aaf647 RD |
4109 | struct ib_uverbs_destroy_srq cmd; |
4110 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 4111 | struct ib_uobject *uobj; |
63aaf647 | 4112 | struct ib_srq *srq; |
9ead190b | 4113 | struct ib_uevent_object *obj; |
63aaf647 | 4114 | int ret = -EINVAL; |
846be90d YH |
4115 | struct ib_usrq_object *us; |
4116 | enum ib_srq_type srq_type; | |
f520ba5a RD |
4117 | |
4118 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
4119 | return -EFAULT; | |
4120 | ||
9ead190b RD |
4121 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
4122 | if (!uobj) | |
4123 | return -EINVAL; | |
4124 | srq = uobj->object; | |
4125 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
846be90d | 4126 | srq_type = srq->srq_type; |
63aaf647 | 4127 | |
9ead190b RD |
4128 | ret = ib_destroy_srq(srq); |
4129 | if (!ret) | |
4130 | uobj->live = 0; | |
f520ba5a | 4131 | |
9ead190b | 4132 | put_uobj_write(uobj); |
f520ba5a | 4133 | |
f520ba5a | 4134 | if (ret) |
9ead190b | 4135 | return ret; |
f520ba5a | 4136 | |
846be90d YH |
4137 | if (srq_type == IB_SRQT_XRC) { |
4138 | us = container_of(obj, struct ib_usrq_object, uevent); | |
4139 | atomic_dec(&us->uxrcd->refcnt); | |
4140 | } | |
4141 | ||
9ead190b | 4142 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 4143 | |
95ed644f | 4144 | mutex_lock(&file->mutex); |
9ead190b | 4145 | list_del(&uobj->list); |
95ed644f | 4146 | mutex_unlock(&file->mutex); |
f520ba5a | 4147 | |
9ead190b | 4148 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 4149 | |
9ead190b RD |
4150 | memset(&resp, 0, sizeof resp); |
4151 | resp.events_reported = obj->events_reported; | |
63aaf647 | 4152 | |
9ead190b | 4153 | put_uobj(uobj); |
f520ba5a | 4154 | |
63aaf647 RD |
4155 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
4156 | &resp, sizeof resp)) | |
4157 | ret = -EFAULT; | |
4158 | ||
f520ba5a RD |
4159 | return ret ? ret : in_len; |
4160 | } | |
02d1aa7a EC |
4161 | |
4162 | int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, | |
057aec0d | 4163 | struct ib_device *ib_dev, |
02d1aa7a EC |
4164 | struct ib_udata *ucore, |
4165 | struct ib_udata *uhw) | |
4166 | { | |
2953f425 | 4167 | struct ib_uverbs_ex_query_device_resp resp = { {0} }; |
02d1aa7a | 4168 | struct ib_uverbs_ex_query_device cmd; |
2953f425 | 4169 | struct ib_device_attr attr = {0}; |
02d1aa7a EC |
4170 | int err; |
4171 | ||
02d1aa7a EC |
4172 | if (ucore->inlen < sizeof(cmd)) |
4173 | return -EINVAL; | |
4174 | ||
4175 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); | |
4176 | if (err) | |
4177 | return err; | |
4178 | ||
4179 | if (cmd.comp_mask) | |
4180 | return -EINVAL; | |
4181 | ||
4182 | if (cmd.reserved) | |
4183 | return -EINVAL; | |
4184 | ||
f4056bfd | 4185 | resp.response_length = offsetof(typeof(resp), odp_caps); |
02d1aa7a EC |
4186 | |
4187 | if (ucore->outlen < resp.response_length) | |
4188 | return -ENOSPC; | |
4189 | ||
057aec0d | 4190 | err = ib_dev->query_device(ib_dev, &attr, uhw); |
02d1aa7a EC |
4191 | if (err) |
4192 | return err; | |
4193 | ||
057aec0d | 4194 | copy_query_dev_fields(file, ib_dev, &resp.base, &attr); |
02d1aa7a | 4195 | |
f4056bfd HE |
4196 | if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps)) |
4197 | goto end; | |
4198 | ||
4199 | #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING | |
4200 | resp.odp_caps.general_caps = attr.odp_caps.general_caps; | |
4201 | resp.odp_caps.per_transport_caps.rc_odp_caps = | |
4202 | attr.odp_caps.per_transport_caps.rc_odp_caps; | |
4203 | resp.odp_caps.per_transport_caps.uc_odp_caps = | |
4204 | attr.odp_caps.per_transport_caps.uc_odp_caps; | |
4205 | resp.odp_caps.per_transport_caps.ud_odp_caps = | |
4206 | attr.odp_caps.per_transport_caps.ud_odp_caps; | |
f4056bfd HE |
4207 | #endif |
4208 | resp.response_length += sizeof(resp.odp_caps); | |
4209 | ||
24306dc6 MB |
4210 | if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask)) |
4211 | goto end; | |
4212 | ||
4213 | resp.timestamp_mask = attr.timestamp_mask; | |
4214 | resp.response_length += sizeof(resp.timestamp_mask); | |
4215 | ||
4216 | if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock)) | |
4217 | goto end; | |
4218 | ||
4219 | resp.hca_core_clock = attr.hca_core_clock; | |
4220 | resp.response_length += sizeof(resp.hca_core_clock); | |
4221 | ||
0b24e5ac MD |
4222 | if (ucore->outlen < resp.response_length + sizeof(resp.device_cap_flags_ex)) |
4223 | goto end; | |
4224 | ||
4225 | resp.device_cap_flags_ex = attr.device_cap_flags; | |
4226 | resp.response_length += sizeof(resp.device_cap_flags_ex); | |
47adf2f4 YH |
4227 | |
4228 | if (ucore->outlen < resp.response_length + sizeof(resp.rss_caps)) | |
4229 | goto end; | |
4230 | ||
4231 | resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts; | |
4232 | resp.rss_caps.max_rwq_indirection_tables = | |
4233 | attr.rss_caps.max_rwq_indirection_tables; | |
4234 | resp.rss_caps.max_rwq_indirection_table_size = | |
4235 | attr.rss_caps.max_rwq_indirection_table_size; | |
4236 | ||
4237 | resp.response_length += sizeof(resp.rss_caps); | |
4238 | ||
4239 | if (ucore->outlen < resp.response_length + sizeof(resp.max_wq_type_rq)) | |
4240 | goto end; | |
4241 | ||
4242 | resp.max_wq_type_rq = attr.max_wq_type_rq; | |
4243 | resp.response_length += sizeof(resp.max_wq_type_rq); | |
f4056bfd | 4244 | end: |
02d1aa7a | 4245 | err = ib_copy_to_udata(ucore, &resp, resp.response_length); |
2953f425 | 4246 | return err; |
02d1aa7a | 4247 | } |