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bc38a6ab RD |
1 | /* |
2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. | |
f7c6a7b5 | 3 | * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
eb9d3cd5 | 4 | * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
8bdb0e86 | 5 | * Copyright (c) 2006 Mellanox Technologies. All rights reserved. |
bc38a6ab RD |
6 | * |
7 | * This software is available to you under a choice of one of two | |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or | |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
16 | * | |
17 | * - Redistributions of source code must retain the above | |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
20 | * | |
21 | * - Redistributions in binary form must reproduce the above | |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
25 | * | |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
bc38a6ab RD |
34 | */ |
35 | ||
6b73597e | 36 | #include <linux/file.h> |
70a30e16 | 37 | #include <linux/fs.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
6b73597e | 39 | |
bc38a6ab RD |
40 | #include <asm/uaccess.h> |
41 | ||
42 | #include "uverbs.h" | |
43 | ||
3bea57a5 RD |
44 | struct uverbs_lock_class { |
45 | struct lock_class_key key; | |
46 | char name[16]; | |
47 | }; | |
48 | ||
49 | static struct uverbs_lock_class pd_lock_class = { .name = "PD-uobj" }; | |
50 | static struct uverbs_lock_class mr_lock_class = { .name = "MR-uobj" }; | |
6b52a12b | 51 | static struct uverbs_lock_class mw_lock_class = { .name = "MW-uobj" }; |
3bea57a5 RD |
52 | static struct uverbs_lock_class cq_lock_class = { .name = "CQ-uobj" }; |
53 | static struct uverbs_lock_class qp_lock_class = { .name = "QP-uobj" }; | |
54 | static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" }; | |
55 | static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" }; | |
56 | static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" }; | |
7afbddfa | 57 | #ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING |
436f2ad0 | 58 | static struct uverbs_lock_class rule_lock_class = { .name = "RULE-uobj" }; |
7afbddfa | 59 | #endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */ |
43db2bc0 | 60 | |
bc38a6ab RD |
61 | #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \ |
62 | do { \ | |
63 | (udata)->inbuf = (void __user *) (ibuf); \ | |
64 | (udata)->outbuf = (void __user *) (obuf); \ | |
65 | (udata)->inlen = (ilen); \ | |
66 | (udata)->outlen = (olen); \ | |
67 | } while (0) | |
68 | ||
9ead190b RD |
69 | /* |
70 | * The ib_uobject locking scheme is as follows: | |
71 | * | |
72 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it | |
73 | * needs to be held during all idr operations. When an object is | |
74 | * looked up, a reference must be taken on the object's kref before | |
75 | * dropping this lock. | |
76 | * | |
77 | * - Each object also has an rwsem. This rwsem must be held for | |
78 | * reading while an operation that uses the object is performed. | |
79 | * For example, while registering an MR, the associated PD's | |
80 | * uobject.mutex must be held for reading. The rwsem must be held | |
81 | * for writing while initializing or destroying an object. | |
82 | * | |
83 | * - In addition, each object has a "live" flag. If this flag is not | |
84 | * set, then lookups of the object will fail even if it is found in | |
85 | * the idr. This handles a reader that blocks and does not acquire | |
86 | * the rwsem until after the object is destroyed. The destroy | |
87 | * operation will set the live flag to 0 and then drop the rwsem; | |
88 | * this will allow the reader to acquire the rwsem, see that the | |
89 | * live flag is 0, and then drop the rwsem and its reference to | |
90 | * object. The underlying storage will not be freed until the last | |
91 | * reference to the object is dropped. | |
92 | */ | |
93 | ||
94 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, | |
3bea57a5 | 95 | struct ib_ucontext *context, struct uverbs_lock_class *c) |
9ead190b RD |
96 | { |
97 | uobj->user_handle = user_handle; | |
98 | uobj->context = context; | |
99 | kref_init(&uobj->ref); | |
100 | init_rwsem(&uobj->mutex); | |
3bea57a5 | 101 | lockdep_set_class_and_name(&uobj->mutex, &c->key, c->name); |
9ead190b RD |
102 | uobj->live = 0; |
103 | } | |
104 | ||
105 | static void release_uobj(struct kref *kref) | |
106 | { | |
107 | kfree(container_of(kref, struct ib_uobject, ref)); | |
108 | } | |
109 | ||
110 | static void put_uobj(struct ib_uobject *uobj) | |
111 | { | |
112 | kref_put(&uobj->ref, release_uobj); | |
113 | } | |
114 | ||
115 | static void put_uobj_read(struct ib_uobject *uobj) | |
116 | { | |
117 | up_read(&uobj->mutex); | |
118 | put_uobj(uobj); | |
119 | } | |
120 | ||
121 | static void put_uobj_write(struct ib_uobject *uobj) | |
122 | { | |
123 | up_write(&uobj->mutex); | |
124 | put_uobj(uobj); | |
125 | } | |
126 | ||
127 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) | |
3463175d RD |
128 | { |
129 | int ret; | |
130 | ||
3b069c5d | 131 | idr_preload(GFP_KERNEL); |
9ead190b | 132 | spin_lock(&ib_uverbs_idr_lock); |
3463175d | 133 | |
3b069c5d TH |
134 | ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT); |
135 | if (ret >= 0) | |
136 | uobj->id = ret; | |
137 | ||
138 | spin_unlock(&ib_uverbs_idr_lock); | |
139 | idr_preload_end(); | |
3463175d | 140 | |
3b069c5d | 141 | return ret < 0 ? ret : 0; |
3463175d RD |
142 | } |
143 | ||
9ead190b RD |
144 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
145 | { | |
146 | spin_lock(&ib_uverbs_idr_lock); | |
147 | idr_remove(idr, uobj->id); | |
148 | spin_unlock(&ib_uverbs_idr_lock); | |
149 | } | |
150 | ||
151 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, | |
152 | struct ib_ucontext *context) | |
153 | { | |
154 | struct ib_uobject *uobj; | |
155 | ||
156 | spin_lock(&ib_uverbs_idr_lock); | |
157 | uobj = idr_find(idr, id); | |
cbfb50e6 RD |
158 | if (uobj) { |
159 | if (uobj->context == context) | |
160 | kref_get(&uobj->ref); | |
161 | else | |
162 | uobj = NULL; | |
163 | } | |
9ead190b RD |
164 | spin_unlock(&ib_uverbs_idr_lock); |
165 | ||
166 | return uobj; | |
167 | } | |
168 | ||
169 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, | |
1ccf6aa1 | 170 | struct ib_ucontext *context, int nested) |
9ead190b RD |
171 | { |
172 | struct ib_uobject *uobj; | |
173 | ||
174 | uobj = __idr_get_uobj(idr, id, context); | |
175 | if (!uobj) | |
176 | return NULL; | |
177 | ||
1ccf6aa1 RD |
178 | if (nested) |
179 | down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING); | |
180 | else | |
181 | down_read(&uobj->mutex); | |
9ead190b RD |
182 | if (!uobj->live) { |
183 | put_uobj_read(uobj); | |
184 | return NULL; | |
185 | } | |
186 | ||
187 | return uobj; | |
188 | } | |
189 | ||
190 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, | |
191 | struct ib_ucontext *context) | |
192 | { | |
193 | struct ib_uobject *uobj; | |
194 | ||
195 | uobj = __idr_get_uobj(idr, id, context); | |
196 | if (!uobj) | |
197 | return NULL; | |
198 | ||
199 | down_write(&uobj->mutex); | |
200 | if (!uobj->live) { | |
201 | put_uobj_write(uobj); | |
202 | return NULL; | |
203 | } | |
204 | ||
205 | return uobj; | |
206 | } | |
207 | ||
1ccf6aa1 RD |
208 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context, |
209 | int nested) | |
9ead190b RD |
210 | { |
211 | struct ib_uobject *uobj; | |
212 | ||
1ccf6aa1 | 213 | uobj = idr_read_uobj(idr, id, context, nested); |
9ead190b RD |
214 | return uobj ? uobj->object : NULL; |
215 | } | |
216 | ||
217 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) | |
218 | { | |
1ccf6aa1 | 219 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0); |
9ead190b RD |
220 | } |
221 | ||
222 | static void put_pd_read(struct ib_pd *pd) | |
223 | { | |
224 | put_uobj_read(pd->uobject); | |
225 | } | |
226 | ||
1ccf6aa1 | 227 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested) |
9ead190b | 228 | { |
1ccf6aa1 | 229 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested); |
9ead190b RD |
230 | } |
231 | ||
232 | static void put_cq_read(struct ib_cq *cq) | |
233 | { | |
234 | put_uobj_read(cq->uobject); | |
235 | } | |
236 | ||
237 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) | |
238 | { | |
1ccf6aa1 | 239 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0); |
9ead190b RD |
240 | } |
241 | ||
242 | static void put_ah_read(struct ib_ah *ah) | |
243 | { | |
244 | put_uobj_read(ah->uobject); | |
245 | } | |
246 | ||
247 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) | |
248 | { | |
1ccf6aa1 | 249 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0); |
9ead190b RD |
250 | } |
251 | ||
e214a0fe EC |
252 | static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context) |
253 | { | |
254 | struct ib_uobject *uobj; | |
255 | ||
256 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context); | |
257 | return uobj ? uobj->object : NULL; | |
258 | } | |
259 | ||
9ead190b RD |
260 | static void put_qp_read(struct ib_qp *qp) |
261 | { | |
262 | put_uobj_read(qp->uobject); | |
263 | } | |
264 | ||
e214a0fe EC |
265 | static void put_qp_write(struct ib_qp *qp) |
266 | { | |
267 | put_uobj_write(qp->uobject); | |
268 | } | |
269 | ||
9ead190b RD |
270 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) |
271 | { | |
1ccf6aa1 | 272 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0); |
9ead190b RD |
273 | } |
274 | ||
275 | static void put_srq_read(struct ib_srq *srq) | |
276 | { | |
277 | put_uobj_read(srq->uobject); | |
278 | } | |
279 | ||
53d0bd1e SH |
280 | static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context, |
281 | struct ib_uobject **uobj) | |
282 | { | |
283 | *uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0); | |
284 | return *uobj ? (*uobj)->object : NULL; | |
285 | } | |
286 | ||
287 | static void put_xrcd_read(struct ib_uobject *uobj) | |
288 | { | |
289 | put_uobj_read(uobj); | |
290 | } | |
291 | ||
bc38a6ab RD |
292 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
293 | const char __user *buf, | |
294 | int in_len, int out_len) | |
295 | { | |
296 | struct ib_uverbs_get_context cmd; | |
297 | struct ib_uverbs_get_context_resp resp; | |
298 | struct ib_udata udata; | |
299 | struct ib_device *ibdev = file->device->ib_dev; | |
63c47c28 | 300 | struct ib_ucontext *ucontext; |
6b73597e | 301 | struct file *filp; |
63c47c28 | 302 | int ret; |
bc38a6ab RD |
303 | |
304 | if (out_len < sizeof resp) | |
305 | return -ENOSPC; | |
306 | ||
307 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
308 | return -EFAULT; | |
309 | ||
95ed644f | 310 | mutex_lock(&file->mutex); |
63c47c28 RD |
311 | |
312 | if (file->ucontext) { | |
313 | ret = -EINVAL; | |
314 | goto err; | |
315 | } | |
316 | ||
bc38a6ab RD |
317 | INIT_UDATA(&udata, buf + sizeof cmd, |
318 | (unsigned long) cmd.response + sizeof resp, | |
319 | in_len - sizeof cmd, out_len - sizeof resp); | |
320 | ||
63c47c28 | 321 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
77f76013 | 322 | if (IS_ERR(ucontext)) { |
df42245a | 323 | ret = PTR_ERR(ucontext); |
77f76013 GC |
324 | goto err; |
325 | } | |
bc38a6ab | 326 | |
63c47c28 RD |
327 | ucontext->device = ibdev; |
328 | INIT_LIST_HEAD(&ucontext->pd_list); | |
329 | INIT_LIST_HEAD(&ucontext->mr_list); | |
330 | INIT_LIST_HEAD(&ucontext->mw_list); | |
331 | INIT_LIST_HEAD(&ucontext->cq_list); | |
332 | INIT_LIST_HEAD(&ucontext->qp_list); | |
333 | INIT_LIST_HEAD(&ucontext->srq_list); | |
334 | INIT_LIST_HEAD(&ucontext->ah_list); | |
53d0bd1e | 335 | INIT_LIST_HEAD(&ucontext->xrcd_list); |
436f2ad0 | 336 | INIT_LIST_HEAD(&ucontext->rule_list); |
f7c6a7b5 | 337 | ucontext->closing = 0; |
bc38a6ab | 338 | |
6b73597e RD |
339 | resp.num_comp_vectors = file->device->num_comp_vectors; |
340 | ||
da183c7a | 341 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
342 | if (ret < 0) |
343 | goto err_free; | |
344 | resp.async_fd = ret; | |
345 | ||
346 | filp = ib_uverbs_alloc_event_file(file, 1); | |
6b73597e RD |
347 | if (IS_ERR(filp)) { |
348 | ret = PTR_ERR(filp); | |
b1e4594b | 349 | goto err_fd; |
6b73597e | 350 | } |
bc38a6ab RD |
351 | |
352 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
353 | &resp, sizeof resp)) { |
354 | ret = -EFAULT; | |
6b73597e | 355 | goto err_file; |
63c47c28 RD |
356 | } |
357 | ||
6b73597e RD |
358 | file->async_file = filp->private_data; |
359 | ||
360 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
361 | ib_uverbs_event_handler); | |
362 | ret = ib_register_event_handler(&file->event_handler); | |
363 | if (ret) | |
364 | goto err_file; | |
365 | ||
366 | kref_get(&file->async_file->ref); | |
367 | kref_get(&file->ref); | |
70a30e16 | 368 | file->ucontext = ucontext; |
6b73597e RD |
369 | |
370 | fd_install(resp.async_fd, filp); | |
371 | ||
95ed644f | 372 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
373 | |
374 | return in_len; | |
375 | ||
6b73597e | 376 | err_file: |
6b73597e RD |
377 | fput(filp); |
378 | ||
b1e4594b AV |
379 | err_fd: |
380 | put_unused_fd(resp.async_fd); | |
381 | ||
63c47c28 RD |
382 | err_free: |
383 | ibdev->dealloc_ucontext(ucontext); | |
bc38a6ab | 384 | |
63c47c28 | 385 | err: |
95ed644f | 386 | mutex_unlock(&file->mutex); |
63c47c28 | 387 | return ret; |
bc38a6ab RD |
388 | } |
389 | ||
390 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, | |
391 | const char __user *buf, | |
392 | int in_len, int out_len) | |
393 | { | |
394 | struct ib_uverbs_query_device cmd; | |
395 | struct ib_uverbs_query_device_resp resp; | |
396 | struct ib_device_attr attr; | |
397 | int ret; | |
398 | ||
399 | if (out_len < sizeof resp) | |
400 | return -ENOSPC; | |
401 | ||
402 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
403 | return -EFAULT; | |
404 | ||
405 | ret = ib_query_device(file->device->ib_dev, &attr); | |
406 | if (ret) | |
407 | return ret; | |
408 | ||
409 | memset(&resp, 0, sizeof resp); | |
410 | ||
411 | resp.fw_ver = attr.fw_ver; | |
cf311cd4 | 412 | resp.node_guid = file->device->ib_dev->node_guid; |
bc38a6ab RD |
413 | resp.sys_image_guid = attr.sys_image_guid; |
414 | resp.max_mr_size = attr.max_mr_size; | |
415 | resp.page_size_cap = attr.page_size_cap; | |
416 | resp.vendor_id = attr.vendor_id; | |
417 | resp.vendor_part_id = attr.vendor_part_id; | |
418 | resp.hw_ver = attr.hw_ver; | |
419 | resp.max_qp = attr.max_qp; | |
420 | resp.max_qp_wr = attr.max_qp_wr; | |
421 | resp.device_cap_flags = attr.device_cap_flags; | |
422 | resp.max_sge = attr.max_sge; | |
423 | resp.max_sge_rd = attr.max_sge_rd; | |
424 | resp.max_cq = attr.max_cq; | |
425 | resp.max_cqe = attr.max_cqe; | |
426 | resp.max_mr = attr.max_mr; | |
427 | resp.max_pd = attr.max_pd; | |
428 | resp.max_qp_rd_atom = attr.max_qp_rd_atom; | |
429 | resp.max_ee_rd_atom = attr.max_ee_rd_atom; | |
430 | resp.max_res_rd_atom = attr.max_res_rd_atom; | |
431 | resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom; | |
432 | resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom; | |
433 | resp.atomic_cap = attr.atomic_cap; | |
434 | resp.max_ee = attr.max_ee; | |
435 | resp.max_rdd = attr.max_rdd; | |
436 | resp.max_mw = attr.max_mw; | |
437 | resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp; | |
438 | resp.max_raw_ethy_qp = attr.max_raw_ethy_qp; | |
439 | resp.max_mcast_grp = attr.max_mcast_grp; | |
440 | resp.max_mcast_qp_attach = attr.max_mcast_qp_attach; | |
441 | resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach; | |
442 | resp.max_ah = attr.max_ah; | |
443 | resp.max_fmr = attr.max_fmr; | |
444 | resp.max_map_per_fmr = attr.max_map_per_fmr; | |
445 | resp.max_srq = attr.max_srq; | |
446 | resp.max_srq_wr = attr.max_srq_wr; | |
447 | resp.max_srq_sge = attr.max_srq_sge; | |
448 | resp.max_pkeys = attr.max_pkeys; | |
449 | resp.local_ca_ack_delay = attr.local_ca_ack_delay; | |
450 | resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
451 | ||
452 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
453 | &resp, sizeof resp)) | |
454 | return -EFAULT; | |
455 | ||
456 | return in_len; | |
457 | } | |
458 | ||
459 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
460 | const char __user *buf, | |
461 | int in_len, int out_len) | |
462 | { | |
463 | struct ib_uverbs_query_port cmd; | |
464 | struct ib_uverbs_query_port_resp resp; | |
465 | struct ib_port_attr attr; | |
466 | int ret; | |
467 | ||
468 | if (out_len < sizeof resp) | |
469 | return -ENOSPC; | |
470 | ||
471 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
472 | return -EFAULT; | |
473 | ||
474 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
475 | if (ret) | |
476 | return ret; | |
477 | ||
478 | memset(&resp, 0, sizeof resp); | |
479 | ||
480 | resp.state = attr.state; | |
481 | resp.max_mtu = attr.max_mtu; | |
482 | resp.active_mtu = attr.active_mtu; | |
483 | resp.gid_tbl_len = attr.gid_tbl_len; | |
484 | resp.port_cap_flags = attr.port_cap_flags; | |
485 | resp.max_msg_sz = attr.max_msg_sz; | |
486 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
487 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
488 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
489 | resp.lid = attr.lid; | |
490 | resp.sm_lid = attr.sm_lid; | |
491 | resp.lmc = attr.lmc; | |
492 | resp.max_vl_num = attr.max_vl_num; | |
493 | resp.sm_sl = attr.sm_sl; | |
494 | resp.subnet_timeout = attr.subnet_timeout; | |
495 | resp.init_type_reply = attr.init_type_reply; | |
496 | resp.active_width = attr.active_width; | |
497 | resp.active_speed = attr.active_speed; | |
498 | resp.phys_state = attr.phys_state; | |
2420b60b EC |
499 | resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev, |
500 | cmd.port_num); | |
bc38a6ab RD |
501 | |
502 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
503 | &resp, sizeof resp)) | |
504 | return -EFAULT; | |
505 | ||
506 | return in_len; | |
507 | } | |
508 | ||
bc38a6ab RD |
509 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
510 | const char __user *buf, | |
511 | int in_len, int out_len) | |
512 | { | |
513 | struct ib_uverbs_alloc_pd cmd; | |
514 | struct ib_uverbs_alloc_pd_resp resp; | |
515 | struct ib_udata udata; | |
516 | struct ib_uobject *uobj; | |
517 | struct ib_pd *pd; | |
518 | int ret; | |
519 | ||
520 | if (out_len < sizeof resp) | |
521 | return -ENOSPC; | |
522 | ||
523 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
524 | return -EFAULT; | |
525 | ||
526 | INIT_UDATA(&udata, buf + sizeof cmd, | |
527 | (unsigned long) cmd.response + sizeof resp, | |
528 | in_len - sizeof cmd, out_len - sizeof resp); | |
529 | ||
530 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
531 | if (!uobj) | |
532 | return -ENOMEM; | |
533 | ||
3bea57a5 | 534 | init_uobj(uobj, 0, file->ucontext, &pd_lock_class); |
9ead190b | 535 | down_write(&uobj->mutex); |
bc38a6ab RD |
536 | |
537 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
538 | file->ucontext, &udata); | |
539 | if (IS_ERR(pd)) { | |
540 | ret = PTR_ERR(pd); | |
541 | goto err; | |
542 | } | |
543 | ||
544 | pd->device = file->device->ib_dev; | |
545 | pd->uobject = uobj; | |
546 | atomic_set(&pd->usecnt, 0); | |
547 | ||
9ead190b RD |
548 | uobj->object = pd; |
549 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 550 | if (ret) |
9ead190b | 551 | goto err_idr; |
bc38a6ab RD |
552 | |
553 | memset(&resp, 0, sizeof resp); | |
554 | resp.pd_handle = uobj->id; | |
555 | ||
556 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
557 | &resp, sizeof resp)) { | |
558 | ret = -EFAULT; | |
9ead190b | 559 | goto err_copy; |
bc38a6ab RD |
560 | } |
561 | ||
95ed644f | 562 | mutex_lock(&file->mutex); |
eb9d3cd5 | 563 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 564 | mutex_unlock(&file->mutex); |
bc38a6ab | 565 | |
9ead190b RD |
566 | uobj->live = 1; |
567 | ||
568 | up_write(&uobj->mutex); | |
bc38a6ab | 569 | |
eb9d3cd5 RD |
570 | return in_len; |
571 | ||
9ead190b RD |
572 | err_copy: |
573 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 574 | |
9ead190b | 575 | err_idr: |
bc38a6ab RD |
576 | ib_dealloc_pd(pd); |
577 | ||
578 | err: | |
9ead190b | 579 | put_uobj_write(uobj); |
bc38a6ab RD |
580 | return ret; |
581 | } | |
582 | ||
583 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
584 | const char __user *buf, | |
585 | int in_len, int out_len) | |
586 | { | |
587 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 588 | struct ib_uobject *uobj; |
9ead190b | 589 | int ret; |
bc38a6ab RD |
590 | |
591 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
592 | return -EFAULT; | |
593 | ||
9ead190b RD |
594 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
595 | if (!uobj) | |
596 | return -EINVAL; | |
bc38a6ab | 597 | |
9ead190b RD |
598 | ret = ib_dealloc_pd(uobj->object); |
599 | if (!ret) | |
600 | uobj->live = 0; | |
bc38a6ab | 601 | |
9ead190b | 602 | put_uobj_write(uobj); |
bc38a6ab | 603 | |
bc38a6ab | 604 | if (ret) |
9ead190b | 605 | return ret; |
bc38a6ab | 606 | |
9ead190b | 607 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 608 | |
95ed644f | 609 | mutex_lock(&file->mutex); |
bc38a6ab | 610 | list_del(&uobj->list); |
95ed644f | 611 | mutex_unlock(&file->mutex); |
bc38a6ab | 612 | |
9ead190b | 613 | put_uobj(uobj); |
bc38a6ab | 614 | |
9ead190b | 615 | return in_len; |
bc38a6ab RD |
616 | } |
617 | ||
53d0bd1e SH |
618 | struct xrcd_table_entry { |
619 | struct rb_node node; | |
620 | struct ib_xrcd *xrcd; | |
621 | struct inode *inode; | |
622 | }; | |
623 | ||
624 | static int xrcd_table_insert(struct ib_uverbs_device *dev, | |
625 | struct inode *inode, | |
626 | struct ib_xrcd *xrcd) | |
627 | { | |
628 | struct xrcd_table_entry *entry, *scan; | |
629 | struct rb_node **p = &dev->xrcd_tree.rb_node; | |
630 | struct rb_node *parent = NULL; | |
631 | ||
632 | entry = kmalloc(sizeof *entry, GFP_KERNEL); | |
633 | if (!entry) | |
634 | return -ENOMEM; | |
635 | ||
636 | entry->xrcd = xrcd; | |
637 | entry->inode = inode; | |
638 | ||
639 | while (*p) { | |
640 | parent = *p; | |
641 | scan = rb_entry(parent, struct xrcd_table_entry, node); | |
642 | ||
643 | if (inode < scan->inode) { | |
644 | p = &(*p)->rb_left; | |
645 | } else if (inode > scan->inode) { | |
646 | p = &(*p)->rb_right; | |
647 | } else { | |
648 | kfree(entry); | |
649 | return -EEXIST; | |
650 | } | |
651 | } | |
652 | ||
653 | rb_link_node(&entry->node, parent, p); | |
654 | rb_insert_color(&entry->node, &dev->xrcd_tree); | |
655 | igrab(inode); | |
656 | return 0; | |
657 | } | |
658 | ||
659 | static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, | |
660 | struct inode *inode) | |
661 | { | |
662 | struct xrcd_table_entry *entry; | |
663 | struct rb_node *p = dev->xrcd_tree.rb_node; | |
664 | ||
665 | while (p) { | |
666 | entry = rb_entry(p, struct xrcd_table_entry, node); | |
667 | ||
668 | if (inode < entry->inode) | |
669 | p = p->rb_left; | |
670 | else if (inode > entry->inode) | |
671 | p = p->rb_right; | |
672 | else | |
673 | return entry; | |
674 | } | |
675 | ||
676 | return NULL; | |
677 | } | |
678 | ||
679 | static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) | |
680 | { | |
681 | struct xrcd_table_entry *entry; | |
682 | ||
683 | entry = xrcd_table_search(dev, inode); | |
684 | if (!entry) | |
685 | return NULL; | |
686 | ||
687 | return entry->xrcd; | |
688 | } | |
689 | ||
690 | static void xrcd_table_delete(struct ib_uverbs_device *dev, | |
691 | struct inode *inode) | |
692 | { | |
693 | struct xrcd_table_entry *entry; | |
694 | ||
695 | entry = xrcd_table_search(dev, inode); | |
696 | if (entry) { | |
697 | iput(inode); | |
698 | rb_erase(&entry->node, &dev->xrcd_tree); | |
699 | kfree(entry); | |
700 | } | |
701 | } | |
702 | ||
703 | ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, | |
704 | const char __user *buf, int in_len, | |
705 | int out_len) | |
706 | { | |
707 | struct ib_uverbs_open_xrcd cmd; | |
708 | struct ib_uverbs_open_xrcd_resp resp; | |
709 | struct ib_udata udata; | |
710 | struct ib_uxrcd_object *obj; | |
711 | struct ib_xrcd *xrcd = NULL; | |
2903ff01 | 712 | struct fd f = {NULL, 0}; |
53d0bd1e | 713 | struct inode *inode = NULL; |
2903ff01 | 714 | int ret = 0; |
53d0bd1e SH |
715 | int new_xrcd = 0; |
716 | ||
717 | if (out_len < sizeof resp) | |
718 | return -ENOSPC; | |
719 | ||
720 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
721 | return -EFAULT; | |
722 | ||
723 | INIT_UDATA(&udata, buf + sizeof cmd, | |
724 | (unsigned long) cmd.response + sizeof resp, | |
725 | in_len - sizeof cmd, out_len - sizeof resp); | |
726 | ||
727 | mutex_lock(&file->device->xrcd_tree_mutex); | |
728 | ||
729 | if (cmd.fd != -1) { | |
730 | /* search for file descriptor */ | |
2903ff01 AV |
731 | f = fdget(cmd.fd); |
732 | if (!f.file) { | |
53d0bd1e SH |
733 | ret = -EBADF; |
734 | goto err_tree_mutex_unlock; | |
735 | } | |
736 | ||
496ad9aa | 737 | inode = file_inode(f.file); |
53d0bd1e SH |
738 | xrcd = find_xrcd(file->device, inode); |
739 | if (!xrcd && !(cmd.oflags & O_CREAT)) { | |
740 | /* no file descriptor. Need CREATE flag */ | |
741 | ret = -EAGAIN; | |
742 | goto err_tree_mutex_unlock; | |
743 | } | |
744 | ||
745 | if (xrcd && cmd.oflags & O_EXCL) { | |
746 | ret = -EINVAL; | |
747 | goto err_tree_mutex_unlock; | |
748 | } | |
749 | } | |
750 | ||
751 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
752 | if (!obj) { | |
753 | ret = -ENOMEM; | |
754 | goto err_tree_mutex_unlock; | |
755 | } | |
756 | ||
3bea57a5 | 757 | init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_class); |
53d0bd1e SH |
758 | |
759 | down_write(&obj->uobject.mutex); | |
760 | ||
761 | if (!xrcd) { | |
762 | xrcd = file->device->ib_dev->alloc_xrcd(file->device->ib_dev, | |
763 | file->ucontext, &udata); | |
764 | if (IS_ERR(xrcd)) { | |
765 | ret = PTR_ERR(xrcd); | |
766 | goto err; | |
767 | } | |
768 | ||
769 | xrcd->inode = inode; | |
770 | xrcd->device = file->device->ib_dev; | |
771 | atomic_set(&xrcd->usecnt, 0); | |
772 | mutex_init(&xrcd->tgt_qp_mutex); | |
773 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
774 | new_xrcd = 1; | |
775 | } | |
776 | ||
777 | atomic_set(&obj->refcnt, 0); | |
778 | obj->uobject.object = xrcd; | |
779 | ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
780 | if (ret) | |
781 | goto err_idr; | |
782 | ||
783 | memset(&resp, 0, sizeof resp); | |
784 | resp.xrcd_handle = obj->uobject.id; | |
785 | ||
786 | if (inode) { | |
787 | if (new_xrcd) { | |
788 | /* create new inode/xrcd table entry */ | |
789 | ret = xrcd_table_insert(file->device, inode, xrcd); | |
790 | if (ret) | |
791 | goto err_insert_xrcd; | |
792 | } | |
793 | atomic_inc(&xrcd->usecnt); | |
794 | } | |
795 | ||
796 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
797 | &resp, sizeof resp)) { | |
798 | ret = -EFAULT; | |
799 | goto err_copy; | |
800 | } | |
801 | ||
2903ff01 AV |
802 | if (f.file) |
803 | fdput(f); | |
53d0bd1e SH |
804 | |
805 | mutex_lock(&file->mutex); | |
806 | list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list); | |
807 | mutex_unlock(&file->mutex); | |
808 | ||
809 | obj->uobject.live = 1; | |
810 | up_write(&obj->uobject.mutex); | |
811 | ||
812 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
813 | return in_len; | |
814 | ||
815 | err_copy: | |
816 | if (inode) { | |
817 | if (new_xrcd) | |
818 | xrcd_table_delete(file->device, inode); | |
819 | atomic_dec(&xrcd->usecnt); | |
820 | } | |
821 | ||
822 | err_insert_xrcd: | |
823 | idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
824 | ||
825 | err_idr: | |
826 | ib_dealloc_xrcd(xrcd); | |
827 | ||
828 | err: | |
829 | put_uobj_write(&obj->uobject); | |
830 | ||
831 | err_tree_mutex_unlock: | |
2903ff01 AV |
832 | if (f.file) |
833 | fdput(f); | |
53d0bd1e SH |
834 | |
835 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
836 | ||
837 | return ret; | |
838 | } | |
839 | ||
840 | ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, | |
841 | const char __user *buf, int in_len, | |
842 | int out_len) | |
843 | { | |
844 | struct ib_uverbs_close_xrcd cmd; | |
845 | struct ib_uobject *uobj; | |
846 | struct ib_xrcd *xrcd = NULL; | |
847 | struct inode *inode = NULL; | |
848 | struct ib_uxrcd_object *obj; | |
849 | int live; | |
850 | int ret = 0; | |
851 | ||
852 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
853 | return -EFAULT; | |
854 | ||
855 | mutex_lock(&file->device->xrcd_tree_mutex); | |
856 | uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext); | |
857 | if (!uobj) { | |
858 | ret = -EINVAL; | |
859 | goto out; | |
860 | } | |
861 | ||
862 | xrcd = uobj->object; | |
863 | inode = xrcd->inode; | |
864 | obj = container_of(uobj, struct ib_uxrcd_object, uobject); | |
865 | if (atomic_read(&obj->refcnt)) { | |
866 | put_uobj_write(uobj); | |
867 | ret = -EBUSY; | |
868 | goto out; | |
869 | } | |
870 | ||
871 | if (!inode || atomic_dec_and_test(&xrcd->usecnt)) { | |
872 | ret = ib_dealloc_xrcd(uobj->object); | |
873 | if (!ret) | |
874 | uobj->live = 0; | |
875 | } | |
876 | ||
877 | live = uobj->live; | |
878 | if (inode && ret) | |
879 | atomic_inc(&xrcd->usecnt); | |
880 | ||
881 | put_uobj_write(uobj); | |
882 | ||
883 | if (ret) | |
884 | goto out; | |
885 | ||
886 | if (inode && !live) | |
887 | xrcd_table_delete(file->device, inode); | |
888 | ||
889 | idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj); | |
890 | mutex_lock(&file->mutex); | |
891 | list_del(&uobj->list); | |
892 | mutex_unlock(&file->mutex); | |
893 | ||
894 | put_uobj(uobj); | |
895 | ret = in_len; | |
896 | ||
897 | out: | |
898 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
899 | return ret; | |
900 | } | |
901 | ||
902 | void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, | |
903 | struct ib_xrcd *xrcd) | |
904 | { | |
905 | struct inode *inode; | |
906 | ||
907 | inode = xrcd->inode; | |
908 | if (inode && !atomic_dec_and_test(&xrcd->usecnt)) | |
909 | return; | |
910 | ||
911 | ib_dealloc_xrcd(xrcd); | |
912 | ||
913 | if (inode) | |
914 | xrcd_table_delete(dev, inode); | |
915 | } | |
916 | ||
bc38a6ab RD |
917 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, |
918 | const char __user *buf, int in_len, | |
919 | int out_len) | |
920 | { | |
921 | struct ib_uverbs_reg_mr cmd; | |
922 | struct ib_uverbs_reg_mr_resp resp; | |
923 | struct ib_udata udata; | |
f7c6a7b5 | 924 | struct ib_uobject *uobj; |
bc38a6ab RD |
925 | struct ib_pd *pd; |
926 | struct ib_mr *mr; | |
927 | int ret; | |
928 | ||
929 | if (out_len < sizeof resp) | |
930 | return -ENOSPC; | |
931 | ||
932 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
933 | return -EFAULT; | |
934 | ||
935 | INIT_UDATA(&udata, buf + sizeof cmd, | |
936 | (unsigned long) cmd.response + sizeof resp, | |
937 | in_len - sizeof cmd, out_len - sizeof resp); | |
938 | ||
939 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
940 | return -EINVAL; | |
941 | ||
f575394f RD |
942 | /* |
943 | * Local write permission is required if remote write or | |
944 | * remote atomic permission is also requested. | |
945 | */ | |
946 | if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) && | |
947 | !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE)) | |
948 | return -EINVAL; | |
949 | ||
f7c6a7b5 RD |
950 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
951 | if (!uobj) | |
bc38a6ab RD |
952 | return -ENOMEM; |
953 | ||
3bea57a5 | 954 | init_uobj(uobj, 0, file->ucontext, &mr_lock_class); |
f7c6a7b5 | 955 | down_write(&uobj->mutex); |
bc38a6ab | 956 | |
9ead190b | 957 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
aaf1aef5 RD |
958 | if (!pd) { |
959 | ret = -EINVAL; | |
f7c6a7b5 | 960 | goto err_free; |
aaf1aef5 | 961 | } |
bc38a6ab | 962 | |
f7c6a7b5 RD |
963 | mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
964 | cmd.access_flags, &udata); | |
bc38a6ab RD |
965 | if (IS_ERR(mr)) { |
966 | ret = PTR_ERR(mr); | |
9ead190b | 967 | goto err_put; |
bc38a6ab RD |
968 | } |
969 | ||
970 | mr->device = pd->device; | |
971 | mr->pd = pd; | |
f7c6a7b5 | 972 | mr->uobject = uobj; |
bc38a6ab RD |
973 | atomic_inc(&pd->usecnt); |
974 | atomic_set(&mr->usecnt, 0); | |
975 | ||
f7c6a7b5 RD |
976 | uobj->object = mr; |
977 | ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); | |
bc38a6ab RD |
978 | if (ret) |
979 | goto err_unreg; | |
980 | ||
9ead190b RD |
981 | memset(&resp, 0, sizeof resp); |
982 | resp.lkey = mr->lkey; | |
983 | resp.rkey = mr->rkey; | |
f7c6a7b5 | 984 | resp.mr_handle = uobj->id; |
bc38a6ab | 985 | |
bc38a6ab RD |
986 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
987 | &resp, sizeof resp)) { | |
988 | ret = -EFAULT; | |
9ead190b | 989 | goto err_copy; |
bc38a6ab RD |
990 | } |
991 | ||
9ead190b RD |
992 | put_pd_read(pd); |
993 | ||
95ed644f | 994 | mutex_lock(&file->mutex); |
f7c6a7b5 | 995 | list_add_tail(&uobj->list, &file->ucontext->mr_list); |
95ed644f | 996 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 997 | |
f7c6a7b5 | 998 | uobj->live = 1; |
9ead190b | 999 | |
f7c6a7b5 | 1000 | up_write(&uobj->mutex); |
bc38a6ab RD |
1001 | |
1002 | return in_len; | |
1003 | ||
9ead190b | 1004 | err_copy: |
f7c6a7b5 | 1005 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab RD |
1006 | |
1007 | err_unreg: | |
1008 | ib_dereg_mr(mr); | |
1009 | ||
9ead190b RD |
1010 | err_put: |
1011 | put_pd_read(pd); | |
bc38a6ab | 1012 | |
bc38a6ab | 1013 | err_free: |
f7c6a7b5 | 1014 | put_uobj_write(uobj); |
bc38a6ab RD |
1015 | return ret; |
1016 | } | |
1017 | ||
1018 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, | |
1019 | const char __user *buf, int in_len, | |
1020 | int out_len) | |
1021 | { | |
1022 | struct ib_uverbs_dereg_mr cmd; | |
1023 | struct ib_mr *mr; | |
9ead190b | 1024 | struct ib_uobject *uobj; |
bc38a6ab RD |
1025 | int ret = -EINVAL; |
1026 | ||
1027 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1028 | return -EFAULT; | |
1029 | ||
9ead190b RD |
1030 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
1031 | if (!uobj) | |
1032 | return -EINVAL; | |
bc38a6ab | 1033 | |
f7c6a7b5 | 1034 | mr = uobj->object; |
bc38a6ab RD |
1035 | |
1036 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
1037 | if (!ret) |
1038 | uobj->live = 0; | |
1039 | ||
1040 | put_uobj_write(uobj); | |
1041 | ||
bc38a6ab | 1042 | if (ret) |
9ead190b | 1043 | return ret; |
bc38a6ab | 1044 | |
9ead190b | 1045 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 1046 | |
95ed644f | 1047 | mutex_lock(&file->mutex); |
9ead190b | 1048 | list_del(&uobj->list); |
95ed644f | 1049 | mutex_unlock(&file->mutex); |
bc38a6ab | 1050 | |
9ead190b | 1051 | put_uobj(uobj); |
bc38a6ab | 1052 | |
9ead190b | 1053 | return in_len; |
bc38a6ab RD |
1054 | } |
1055 | ||
6b52a12b SM |
1056 | ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file, |
1057 | const char __user *buf, int in_len, | |
1058 | int out_len) | |
1059 | { | |
1060 | struct ib_uverbs_alloc_mw cmd; | |
1061 | struct ib_uverbs_alloc_mw_resp resp; | |
1062 | struct ib_uobject *uobj; | |
1063 | struct ib_pd *pd; | |
1064 | struct ib_mw *mw; | |
1065 | int ret; | |
1066 | ||
1067 | if (out_len < sizeof(resp)) | |
1068 | return -ENOSPC; | |
1069 | ||
1070 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1071 | return -EFAULT; | |
1072 | ||
1073 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
1074 | if (!uobj) | |
1075 | return -ENOMEM; | |
1076 | ||
1077 | init_uobj(uobj, 0, file->ucontext, &mw_lock_class); | |
1078 | down_write(&uobj->mutex); | |
1079 | ||
1080 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1081 | if (!pd) { | |
1082 | ret = -EINVAL; | |
1083 | goto err_free; | |
1084 | } | |
1085 | ||
1086 | mw = pd->device->alloc_mw(pd, cmd.mw_type); | |
1087 | if (IS_ERR(mw)) { | |
1088 | ret = PTR_ERR(mw); | |
1089 | goto err_put; | |
1090 | } | |
1091 | ||
1092 | mw->device = pd->device; | |
1093 | mw->pd = pd; | |
1094 | mw->uobject = uobj; | |
1095 | atomic_inc(&pd->usecnt); | |
1096 | ||
1097 | uobj->object = mw; | |
1098 | ret = idr_add_uobj(&ib_uverbs_mw_idr, uobj); | |
1099 | if (ret) | |
1100 | goto err_unalloc; | |
1101 | ||
1102 | memset(&resp, 0, sizeof(resp)); | |
1103 | resp.rkey = mw->rkey; | |
1104 | resp.mw_handle = uobj->id; | |
1105 | ||
1106 | if (copy_to_user((void __user *)(unsigned long)cmd.response, | |
1107 | &resp, sizeof(resp))) { | |
1108 | ret = -EFAULT; | |
1109 | goto err_copy; | |
1110 | } | |
1111 | ||
1112 | put_pd_read(pd); | |
1113 | ||
1114 | mutex_lock(&file->mutex); | |
1115 | list_add_tail(&uobj->list, &file->ucontext->mw_list); | |
1116 | mutex_unlock(&file->mutex); | |
1117 | ||
1118 | uobj->live = 1; | |
1119 | ||
1120 | up_write(&uobj->mutex); | |
1121 | ||
1122 | return in_len; | |
1123 | ||
1124 | err_copy: | |
1125 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1126 | ||
1127 | err_unalloc: | |
1128 | ib_dealloc_mw(mw); | |
1129 | ||
1130 | err_put: | |
1131 | put_pd_read(pd); | |
1132 | ||
1133 | err_free: | |
1134 | put_uobj_write(uobj); | |
1135 | return ret; | |
1136 | } | |
1137 | ||
1138 | ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, | |
1139 | const char __user *buf, int in_len, | |
1140 | int out_len) | |
1141 | { | |
1142 | struct ib_uverbs_dealloc_mw cmd; | |
1143 | struct ib_mw *mw; | |
1144 | struct ib_uobject *uobj; | |
1145 | int ret = -EINVAL; | |
1146 | ||
1147 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1148 | return -EFAULT; | |
1149 | ||
1150 | uobj = idr_write_uobj(&ib_uverbs_mw_idr, cmd.mw_handle, file->ucontext); | |
1151 | if (!uobj) | |
1152 | return -EINVAL; | |
1153 | ||
1154 | mw = uobj->object; | |
1155 | ||
1156 | ret = ib_dealloc_mw(mw); | |
1157 | if (!ret) | |
1158 | uobj->live = 0; | |
1159 | ||
1160 | put_uobj_write(uobj); | |
1161 | ||
1162 | if (ret) | |
1163 | return ret; | |
1164 | ||
1165 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1166 | ||
1167 | mutex_lock(&file->mutex); | |
1168 | list_del(&uobj->list); | |
1169 | mutex_unlock(&file->mutex); | |
1170 | ||
1171 | put_uobj(uobj); | |
1172 | ||
1173 | return in_len; | |
1174 | } | |
1175 | ||
6b73597e RD |
1176 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
1177 | const char __user *buf, int in_len, | |
1178 | int out_len) | |
1179 | { | |
1180 | struct ib_uverbs_create_comp_channel cmd; | |
1181 | struct ib_uverbs_create_comp_channel_resp resp; | |
1182 | struct file *filp; | |
b1e4594b | 1183 | int ret; |
6b73597e RD |
1184 | |
1185 | if (out_len < sizeof resp) | |
1186 | return -ENOSPC; | |
1187 | ||
1188 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1189 | return -EFAULT; | |
1190 | ||
da183c7a | 1191 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
1192 | if (ret < 0) |
1193 | return ret; | |
1194 | resp.fd = ret; | |
1195 | ||
1196 | filp = ib_uverbs_alloc_event_file(file, 0); | |
1197 | if (IS_ERR(filp)) { | |
1198 | put_unused_fd(resp.fd); | |
6b73597e | 1199 | return PTR_ERR(filp); |
b1e4594b | 1200 | } |
6b73597e RD |
1201 | |
1202 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1203 | &resp, sizeof resp)) { | |
1204 | put_unused_fd(resp.fd); | |
1205 | fput(filp); | |
1206 | return -EFAULT; | |
1207 | } | |
1208 | ||
1209 | fd_install(resp.fd, filp); | |
1210 | return in_len; | |
1211 | } | |
1212 | ||
bc38a6ab RD |
1213 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, |
1214 | const char __user *buf, int in_len, | |
1215 | int out_len) | |
1216 | { | |
1217 | struct ib_uverbs_create_cq cmd; | |
1218 | struct ib_uverbs_create_cq_resp resp; | |
1219 | struct ib_udata udata; | |
9ead190b | 1220 | struct ib_ucq_object *obj; |
6b73597e | 1221 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
1222 | struct ib_cq *cq; |
1223 | int ret; | |
1224 | ||
1225 | if (out_len < sizeof resp) | |
1226 | return -ENOSPC; | |
1227 | ||
1228 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1229 | return -EFAULT; | |
1230 | ||
1231 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1232 | (unsigned long) cmd.response + sizeof resp, | |
1233 | in_len - sizeof cmd, out_len - sizeof resp); | |
1234 | ||
6b73597e | 1235 | if (cmd.comp_vector >= file->device->num_comp_vectors) |
bc38a6ab RD |
1236 | return -EINVAL; |
1237 | ||
9ead190b RD |
1238 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1239 | if (!obj) | |
bc38a6ab RD |
1240 | return -ENOMEM; |
1241 | ||
3bea57a5 | 1242 | init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &cq_lock_class); |
9ead190b RD |
1243 | down_write(&obj->uobject.mutex); |
1244 | ||
ac4e7b35 JM |
1245 | if (cmd.comp_channel >= 0) { |
1246 | ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel); | |
1247 | if (!ev_file) { | |
1248 | ret = -EINVAL; | |
1249 | goto err; | |
1250 | } | |
1251 | } | |
1252 | ||
9ead190b RD |
1253 | obj->uverbs_file = file; |
1254 | obj->comp_events_reported = 0; | |
1255 | obj->async_events_reported = 0; | |
1256 | INIT_LIST_HEAD(&obj->comp_list); | |
1257 | INIT_LIST_HEAD(&obj->async_list); | |
bc38a6ab RD |
1258 | |
1259 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe, | |
f4fd0b22 | 1260 | cmd.comp_vector, |
bc38a6ab RD |
1261 | file->ucontext, &udata); |
1262 | if (IS_ERR(cq)) { | |
1263 | ret = PTR_ERR(cq); | |
9ead190b | 1264 | goto err_file; |
bc38a6ab RD |
1265 | } |
1266 | ||
1267 | cq->device = file->device->ib_dev; | |
9ead190b | 1268 | cq->uobject = &obj->uobject; |
bc38a6ab RD |
1269 | cq->comp_handler = ib_uverbs_comp_handler; |
1270 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 1271 | cq->cq_context = ev_file; |
bc38a6ab RD |
1272 | atomic_set(&cq->usecnt, 0); |
1273 | ||
9ead190b RD |
1274 | obj->uobject.object = cq; |
1275 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
bc38a6ab | 1276 | if (ret) |
9ead190b | 1277 | goto err_free; |
bc38a6ab RD |
1278 | |
1279 | memset(&resp, 0, sizeof resp); | |
9ead190b | 1280 | resp.cq_handle = obj->uobject.id; |
bc38a6ab RD |
1281 | resp.cqe = cq->cqe; |
1282 | ||
1283 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1284 | &resp, sizeof resp)) { | |
1285 | ret = -EFAULT; | |
9ead190b | 1286 | goto err_copy; |
bc38a6ab RD |
1287 | } |
1288 | ||
95ed644f | 1289 | mutex_lock(&file->mutex); |
9ead190b | 1290 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 1291 | mutex_unlock(&file->mutex); |
bc38a6ab | 1292 | |
9ead190b RD |
1293 | obj->uobject.live = 1; |
1294 | ||
1295 | up_write(&obj->uobject.mutex); | |
bc38a6ab | 1296 | |
eb9d3cd5 RD |
1297 | return in_len; |
1298 | ||
9ead190b RD |
1299 | err_copy: |
1300 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
eb9d3cd5 | 1301 | |
9ead190b | 1302 | err_free: |
bc38a6ab RD |
1303 | ib_destroy_cq(cq); |
1304 | ||
9ead190b | 1305 | err_file: |
ac4e7b35 | 1306 | if (ev_file) |
9ead190b RD |
1307 | ib_uverbs_release_ucq(file, ev_file, obj); |
1308 | ||
1309 | err: | |
1310 | put_uobj_write(&obj->uobject); | |
bc38a6ab RD |
1311 | return ret; |
1312 | } | |
1313 | ||
33b9b3ee RD |
1314 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
1315 | const char __user *buf, int in_len, | |
1316 | int out_len) | |
1317 | { | |
1318 | struct ib_uverbs_resize_cq cmd; | |
1319 | struct ib_uverbs_resize_cq_resp resp; | |
1320 | struct ib_udata udata; | |
1321 | struct ib_cq *cq; | |
1322 | int ret = -EINVAL; | |
1323 | ||
1324 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1325 | return -EFAULT; | |
1326 | ||
1327 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1328 | (unsigned long) cmd.response + sizeof resp, | |
1329 | in_len - sizeof cmd, out_len - sizeof resp); | |
1330 | ||
1ccf6aa1 | 1331 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
9ead190b RD |
1332 | if (!cq) |
1333 | return -EINVAL; | |
33b9b3ee RD |
1334 | |
1335 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
1336 | if (ret) | |
1337 | goto out; | |
1338 | ||
33b9b3ee RD |
1339 | resp.cqe = cq->cqe; |
1340 | ||
1341 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
64f817ba | 1342 | &resp, sizeof resp.cqe)) |
33b9b3ee RD |
1343 | ret = -EFAULT; |
1344 | ||
1345 | out: | |
9ead190b | 1346 | put_cq_read(cq); |
33b9b3ee RD |
1347 | |
1348 | return ret ? ret : in_len; | |
1349 | } | |
1350 | ||
7182afea DC |
1351 | static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) |
1352 | { | |
1353 | struct ib_uverbs_wc tmp; | |
1354 | ||
1355 | tmp.wr_id = wc->wr_id; | |
1356 | tmp.status = wc->status; | |
1357 | tmp.opcode = wc->opcode; | |
1358 | tmp.vendor_err = wc->vendor_err; | |
1359 | tmp.byte_len = wc->byte_len; | |
1360 | tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; | |
1361 | tmp.qp_num = wc->qp->qp_num; | |
1362 | tmp.src_qp = wc->src_qp; | |
1363 | tmp.wc_flags = wc->wc_flags; | |
1364 | tmp.pkey_index = wc->pkey_index; | |
1365 | tmp.slid = wc->slid; | |
1366 | tmp.sl = wc->sl; | |
1367 | tmp.dlid_path_bits = wc->dlid_path_bits; | |
1368 | tmp.port_num = wc->port_num; | |
1369 | tmp.reserved = 0; | |
1370 | ||
1371 | if (copy_to_user(dest, &tmp, sizeof tmp)) | |
1372 | return -EFAULT; | |
1373 | ||
1374 | return 0; | |
1375 | } | |
1376 | ||
67cdb40c RD |
1377 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
1378 | const char __user *buf, int in_len, | |
1379 | int out_len) | |
1380 | { | |
1381 | struct ib_uverbs_poll_cq cmd; | |
7182afea DC |
1382 | struct ib_uverbs_poll_cq_resp resp; |
1383 | u8 __user *header_ptr; | |
1384 | u8 __user *data_ptr; | |
67cdb40c | 1385 | struct ib_cq *cq; |
7182afea DC |
1386 | struct ib_wc wc; |
1387 | int ret; | |
67cdb40c RD |
1388 | |
1389 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1390 | return -EFAULT; | |
1391 | ||
1ccf6aa1 | 1392 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
7182afea DC |
1393 | if (!cq) |
1394 | return -EINVAL; | |
67cdb40c | 1395 | |
7182afea DC |
1396 | /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
1397 | header_ptr = (void __user *)(unsigned long) cmd.response; | |
1398 | data_ptr = header_ptr + sizeof resp; | |
9ead190b | 1399 | |
7182afea DC |
1400 | memset(&resp, 0, sizeof resp); |
1401 | while (resp.count < cmd.ne) { | |
1402 | ret = ib_poll_cq(cq, 1, &wc); | |
1403 | if (ret < 0) | |
1404 | goto out_put; | |
1405 | if (!ret) | |
1406 | break; | |
1407 | ||
1408 | ret = copy_wc_to_user(data_ptr, &wc); | |
1409 | if (ret) | |
1410 | goto out_put; | |
1411 | ||
1412 | data_ptr += sizeof(struct ib_uverbs_wc); | |
1413 | ++resp.count; | |
67cdb40c RD |
1414 | } |
1415 | ||
7182afea | 1416 | if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
67cdb40c | 1417 | ret = -EFAULT; |
7182afea DC |
1418 | goto out_put; |
1419 | } | |
67cdb40c | 1420 | |
7182afea | 1421 | ret = in_len; |
67cdb40c | 1422 | |
7182afea DC |
1423 | out_put: |
1424 | put_cq_read(cq); | |
1425 | return ret; | |
67cdb40c RD |
1426 | } |
1427 | ||
1428 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
1429 | const char __user *buf, int in_len, | |
1430 | int out_len) | |
1431 | { | |
1432 | struct ib_uverbs_req_notify_cq cmd; | |
1433 | struct ib_cq *cq; | |
67cdb40c RD |
1434 | |
1435 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1436 | return -EFAULT; | |
1437 | ||
1ccf6aa1 | 1438 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 1439 | if (!cq) |
9ead190b | 1440 | return -EINVAL; |
67cdb40c | 1441 | |
9ead190b RD |
1442 | ib_req_notify_cq(cq, cmd.solicited_only ? |
1443 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
1444 | ||
ab108676 | 1445 | put_cq_read(cq); |
9ead190b RD |
1446 | |
1447 | return in_len; | |
67cdb40c RD |
1448 | } |
1449 | ||
bc38a6ab RD |
1450 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
1451 | const char __user *buf, int in_len, | |
1452 | int out_len) | |
1453 | { | |
63aaf647 RD |
1454 | struct ib_uverbs_destroy_cq cmd; |
1455 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 1456 | struct ib_uobject *uobj; |
63aaf647 | 1457 | struct ib_cq *cq; |
9ead190b | 1458 | struct ib_ucq_object *obj; |
6b73597e | 1459 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 1460 | int ret = -EINVAL; |
bc38a6ab RD |
1461 | |
1462 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1463 | return -EFAULT; | |
1464 | ||
9ead190b RD |
1465 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
1466 | if (!uobj) | |
1467 | return -EINVAL; | |
1468 | cq = uobj->object; | |
1469 | ev_file = cq->cq_context; | |
1470 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 1471 | |
9ead190b RD |
1472 | ret = ib_destroy_cq(cq); |
1473 | if (!ret) | |
1474 | uobj->live = 0; | |
bc38a6ab | 1475 | |
9ead190b | 1476 | put_uobj_write(uobj); |
bc38a6ab | 1477 | |
bc38a6ab | 1478 | if (ret) |
9ead190b | 1479 | return ret; |
bc38a6ab | 1480 | |
9ead190b | 1481 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 1482 | |
95ed644f | 1483 | mutex_lock(&file->mutex); |
9ead190b | 1484 | list_del(&uobj->list); |
95ed644f | 1485 | mutex_unlock(&file->mutex); |
bc38a6ab | 1486 | |
9ead190b | 1487 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1488 | |
9ead190b RD |
1489 | memset(&resp, 0, sizeof resp); |
1490 | resp.comp_events_reported = obj->comp_events_reported; | |
1491 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1492 | |
9ead190b | 1493 | put_uobj(uobj); |
bc38a6ab | 1494 | |
63aaf647 RD |
1495 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1496 | &resp, sizeof resp)) | |
9ead190b | 1497 | return -EFAULT; |
bc38a6ab | 1498 | |
9ead190b | 1499 | return in_len; |
bc38a6ab RD |
1500 | } |
1501 | ||
1502 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
1503 | const char __user *buf, int in_len, | |
1504 | int out_len) | |
1505 | { | |
1506 | struct ib_uverbs_create_qp cmd; | |
1507 | struct ib_uverbs_create_qp_resp resp; | |
1508 | struct ib_udata udata; | |
9ead190b | 1509 | struct ib_uqp_object *obj; |
b93f3c18 SH |
1510 | struct ib_device *device; |
1511 | struct ib_pd *pd = NULL; | |
1512 | struct ib_xrcd *xrcd = NULL; | |
1513 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1514 | struct ib_cq *scq = NULL, *rcq = NULL; | |
9977f4f6 | 1515 | struct ib_srq *srq = NULL; |
bc38a6ab RD |
1516 | struct ib_qp *qp; |
1517 | struct ib_qp_init_attr attr; | |
1518 | int ret; | |
1519 | ||
1520 | if (out_len < sizeof resp) | |
1521 | return -ENOSPC; | |
1522 | ||
1523 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1524 | return -EFAULT; | |
1525 | ||
c938a616 OG |
1526 | if (cmd.qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) |
1527 | return -EPERM; | |
1528 | ||
bc38a6ab RD |
1529 | INIT_UDATA(&udata, buf + sizeof cmd, |
1530 | (unsigned long) cmd.response + sizeof resp, | |
1531 | in_len - sizeof cmd, out_len - sizeof resp); | |
1532 | ||
846be90d | 1533 | obj = kzalloc(sizeof *obj, GFP_KERNEL); |
9ead190b | 1534 | if (!obj) |
bc38a6ab RD |
1535 | return -ENOMEM; |
1536 | ||
3bea57a5 | 1537 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
9ead190b | 1538 | down_write(&obj->uevent.uobject.mutex); |
bc38a6ab | 1539 | |
b93f3c18 SH |
1540 | if (cmd.qp_type == IB_QPT_XRC_TGT) { |
1541 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
1542 | if (!xrcd) { | |
1543 | ret = -EINVAL; | |
1544 | goto err_put; | |
1545 | } | |
1546 | device = xrcd->device; | |
9977f4f6 | 1547 | } else { |
b93f3c18 SH |
1548 | if (cmd.qp_type == IB_QPT_XRC_INI) { |
1549 | cmd.max_recv_wr = cmd.max_recv_sge = 0; | |
1550 | } else { | |
1551 | if (cmd.is_srq) { | |
1552 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); | |
1553 | if (!srq || srq->srq_type != IB_SRQT_BASIC) { | |
1554 | ret = -EINVAL; | |
1555 | goto err_put; | |
1556 | } | |
1557 | } | |
5909ce54 RD |
1558 | |
1559 | if (cmd.recv_cq_handle != cmd.send_cq_handle) { | |
1560 | rcq = idr_read_cq(cmd.recv_cq_handle, file->ucontext, 0); | |
1561 | if (!rcq) { | |
1562 | ret = -EINVAL; | |
1563 | goto err_put; | |
1564 | } | |
9977f4f6 SH |
1565 | } |
1566 | } | |
5909ce54 RD |
1567 | |
1568 | scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, !!rcq); | |
1569 | rcq = rcq ?: scq; | |
1570 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1571 | if (!pd || !scq) { | |
1572 | ret = -EINVAL; | |
1573 | goto err_put; | |
1574 | } | |
1575 | ||
b93f3c18 | 1576 | device = pd->device; |
9977f4f6 SH |
1577 | } |
1578 | ||
bc38a6ab RD |
1579 | attr.event_handler = ib_uverbs_qp_event_handler; |
1580 | attr.qp_context = file; | |
1581 | attr.send_cq = scq; | |
1582 | attr.recv_cq = rcq; | |
f520ba5a | 1583 | attr.srq = srq; |
b93f3c18 | 1584 | attr.xrcd = xrcd; |
bc38a6ab RD |
1585 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
1586 | attr.qp_type = cmd.qp_type; | |
b846f25a | 1587 | attr.create_flags = 0; |
bc38a6ab RD |
1588 | |
1589 | attr.cap.max_send_wr = cmd.max_send_wr; | |
1590 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
1591 | attr.cap.max_send_sge = cmd.max_send_sge; | |
1592 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
1593 | attr.cap.max_inline_data = cmd.max_inline_data; | |
1594 | ||
9ead190b RD |
1595 | obj->uevent.events_reported = 0; |
1596 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1597 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab | 1598 | |
b93f3c18 SH |
1599 | if (cmd.qp_type == IB_QPT_XRC_TGT) |
1600 | qp = ib_create_qp(pd, &attr); | |
1601 | else | |
1602 | qp = device->create_qp(pd, &attr, &udata); | |
1603 | ||
bc38a6ab RD |
1604 | if (IS_ERR(qp)) { |
1605 | ret = PTR_ERR(qp); | |
9ead190b | 1606 | goto err_put; |
bc38a6ab RD |
1607 | } |
1608 | ||
b93f3c18 | 1609 | if (cmd.qp_type != IB_QPT_XRC_TGT) { |
0e0ec7e0 | 1610 | qp->real_qp = qp; |
b93f3c18 SH |
1611 | qp->device = device; |
1612 | qp->pd = pd; | |
1613 | qp->send_cq = attr.send_cq; | |
1614 | qp->recv_cq = attr.recv_cq; | |
1615 | qp->srq = attr.srq; | |
1616 | qp->event_handler = attr.event_handler; | |
1617 | qp->qp_context = attr.qp_context; | |
1618 | qp->qp_type = attr.qp_type; | |
e47e321a | 1619 | atomic_set(&qp->usecnt, 0); |
b93f3c18 SH |
1620 | atomic_inc(&pd->usecnt); |
1621 | atomic_inc(&attr.send_cq->usecnt); | |
1622 | if (attr.recv_cq) | |
1623 | atomic_inc(&attr.recv_cq->usecnt); | |
1624 | if (attr.srq) | |
1625 | atomic_inc(&attr.srq->usecnt); | |
1626 | } | |
1627 | qp->uobject = &obj->uevent.uobject; | |
bc38a6ab | 1628 | |
9ead190b RD |
1629 | obj->uevent.uobject.object = qp; |
1630 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1631 | if (ret) |
1632 | goto err_destroy; | |
1633 | ||
9ead190b RD |
1634 | memset(&resp, 0, sizeof resp); |
1635 | resp.qpn = qp->qp_num; | |
1636 | resp.qp_handle = obj->uevent.uobject.id; | |
77369ed3 JM |
1637 | resp.max_recv_sge = attr.cap.max_recv_sge; |
1638 | resp.max_send_sge = attr.cap.max_send_sge; | |
1639 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
1640 | resp.max_send_wr = attr.cap.max_send_wr; | |
1641 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1642 | |
bc38a6ab RD |
1643 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1644 | &resp, sizeof resp)) { | |
1645 | ret = -EFAULT; | |
9ead190b | 1646 | goto err_copy; |
bc38a6ab RD |
1647 | } |
1648 | ||
846be90d YH |
1649 | if (xrcd) { |
1650 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, | |
1651 | uobject); | |
1652 | atomic_inc(&obj->uxrcd->refcnt); | |
b93f3c18 | 1653 | put_xrcd_read(xrcd_uobj); |
846be90d YH |
1654 | } |
1655 | ||
b93f3c18 SH |
1656 | if (pd) |
1657 | put_pd_read(pd); | |
1658 | if (scq) | |
1659 | put_cq_read(scq); | |
9977f4f6 | 1660 | if (rcq && rcq != scq) |
43db2bc0 | 1661 | put_cq_read(rcq); |
9ead190b RD |
1662 | if (srq) |
1663 | put_srq_read(srq); | |
1664 | ||
95ed644f | 1665 | mutex_lock(&file->mutex); |
9ead190b | 1666 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1667 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1668 | |
9ead190b RD |
1669 | obj->uevent.uobject.live = 1; |
1670 | ||
1671 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab RD |
1672 | |
1673 | return in_len; | |
1674 | ||
9ead190b RD |
1675 | err_copy: |
1676 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1677 | |
1678 | err_destroy: | |
1679 | ib_destroy_qp(qp); | |
1680 | ||
9ead190b | 1681 | err_put: |
b93f3c18 SH |
1682 | if (xrcd) |
1683 | put_xrcd_read(xrcd_uobj); | |
9ead190b RD |
1684 | if (pd) |
1685 | put_pd_read(pd); | |
1686 | if (scq) | |
1687 | put_cq_read(scq); | |
43db2bc0 | 1688 | if (rcq && rcq != scq) |
9ead190b RD |
1689 | put_cq_read(rcq); |
1690 | if (srq) | |
1691 | put_srq_read(srq); | |
1692 | ||
1693 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
1694 | return ret; |
1695 | } | |
1696 | ||
42849b26 SH |
1697 | ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, |
1698 | const char __user *buf, int in_len, int out_len) | |
1699 | { | |
1700 | struct ib_uverbs_open_qp cmd; | |
1701 | struct ib_uverbs_create_qp_resp resp; | |
1702 | struct ib_udata udata; | |
1703 | struct ib_uqp_object *obj; | |
1704 | struct ib_xrcd *xrcd; | |
1705 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1706 | struct ib_qp *qp; | |
1707 | struct ib_qp_open_attr attr; | |
1708 | int ret; | |
1709 | ||
1710 | if (out_len < sizeof resp) | |
1711 | return -ENOSPC; | |
1712 | ||
1713 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1714 | return -EFAULT; | |
1715 | ||
1716 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1717 | (unsigned long) cmd.response + sizeof resp, | |
1718 | in_len - sizeof cmd, out_len - sizeof resp); | |
1719 | ||
1720 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
1721 | if (!obj) | |
1722 | return -ENOMEM; | |
1723 | ||
3bea57a5 | 1724 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
42849b26 SH |
1725 | down_write(&obj->uevent.uobject.mutex); |
1726 | ||
1727 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
1728 | if (!xrcd) { | |
1729 | ret = -EINVAL; | |
1730 | goto err_put; | |
1731 | } | |
1732 | ||
1733 | attr.event_handler = ib_uverbs_qp_event_handler; | |
1734 | attr.qp_context = file; | |
1735 | attr.qp_num = cmd.qpn; | |
1736 | attr.qp_type = cmd.qp_type; | |
1737 | ||
1738 | obj->uevent.events_reported = 0; | |
1739 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1740 | INIT_LIST_HEAD(&obj->mcast_list); | |
1741 | ||
1742 | qp = ib_open_qp(xrcd, &attr); | |
1743 | if (IS_ERR(qp)) { | |
1744 | ret = PTR_ERR(qp); | |
1745 | goto err_put; | |
1746 | } | |
1747 | ||
1748 | qp->uobject = &obj->uevent.uobject; | |
1749 | ||
1750 | obj->uevent.uobject.object = qp; | |
1751 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
1752 | if (ret) | |
1753 | goto err_destroy; | |
1754 | ||
1755 | memset(&resp, 0, sizeof resp); | |
1756 | resp.qpn = qp->qp_num; | |
1757 | resp.qp_handle = obj->uevent.uobject.id; | |
1758 | ||
1759 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1760 | &resp, sizeof resp)) { | |
1761 | ret = -EFAULT; | |
1762 | goto err_remove; | |
1763 | } | |
1764 | ||
846be90d YH |
1765 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); |
1766 | atomic_inc(&obj->uxrcd->refcnt); | |
42849b26 SH |
1767 | put_xrcd_read(xrcd_uobj); |
1768 | ||
1769 | mutex_lock(&file->mutex); | |
1770 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); | |
1771 | mutex_unlock(&file->mutex); | |
1772 | ||
1773 | obj->uevent.uobject.live = 1; | |
1774 | ||
1775 | up_write(&obj->uevent.uobject.mutex); | |
1776 | ||
1777 | return in_len; | |
1778 | ||
1779 | err_remove: | |
1780 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
1781 | ||
1782 | err_destroy: | |
1783 | ib_destroy_qp(qp); | |
1784 | ||
1785 | err_put: | |
1786 | put_xrcd_read(xrcd_uobj); | |
1787 | put_uobj_write(&obj->uevent.uobject); | |
1788 | return ret; | |
1789 | } | |
1790 | ||
7ccc9a24 DB |
1791 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
1792 | const char __user *buf, int in_len, | |
1793 | int out_len) | |
1794 | { | |
1795 | struct ib_uverbs_query_qp cmd; | |
1796 | struct ib_uverbs_query_qp_resp resp; | |
1797 | struct ib_qp *qp; | |
1798 | struct ib_qp_attr *attr; | |
1799 | struct ib_qp_init_attr *init_attr; | |
1800 | int ret; | |
1801 | ||
1802 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1803 | return -EFAULT; | |
1804 | ||
1805 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
1806 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
1807 | if (!attr || !init_attr) { | |
1808 | ret = -ENOMEM; | |
1809 | goto out; | |
1810 | } | |
1811 | ||
9ead190b RD |
1812 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1813 | if (!qp) { | |
7ccc9a24 | 1814 | ret = -EINVAL; |
9ead190b RD |
1815 | goto out; |
1816 | } | |
1817 | ||
1818 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 1819 | |
9ead190b | 1820 | put_qp_read(qp); |
7ccc9a24 DB |
1821 | |
1822 | if (ret) | |
1823 | goto out; | |
1824 | ||
1825 | memset(&resp, 0, sizeof resp); | |
1826 | ||
1827 | resp.qp_state = attr->qp_state; | |
1828 | resp.cur_qp_state = attr->cur_qp_state; | |
1829 | resp.path_mtu = attr->path_mtu; | |
1830 | resp.path_mig_state = attr->path_mig_state; | |
1831 | resp.qkey = attr->qkey; | |
1832 | resp.rq_psn = attr->rq_psn; | |
1833 | resp.sq_psn = attr->sq_psn; | |
1834 | resp.dest_qp_num = attr->dest_qp_num; | |
1835 | resp.qp_access_flags = attr->qp_access_flags; | |
1836 | resp.pkey_index = attr->pkey_index; | |
1837 | resp.alt_pkey_index = attr->alt_pkey_index; | |
0b26c88f | 1838 | resp.sq_draining = attr->sq_draining; |
7ccc9a24 DB |
1839 | resp.max_rd_atomic = attr->max_rd_atomic; |
1840 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
1841 | resp.min_rnr_timer = attr->min_rnr_timer; | |
1842 | resp.port_num = attr->port_num; | |
1843 | resp.timeout = attr->timeout; | |
1844 | resp.retry_cnt = attr->retry_cnt; | |
1845 | resp.rnr_retry = attr->rnr_retry; | |
1846 | resp.alt_port_num = attr->alt_port_num; | |
1847 | resp.alt_timeout = attr->alt_timeout; | |
1848 | ||
1849 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
1850 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
1851 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
1852 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
1853 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
1854 | resp.dest.dlid = attr->ah_attr.dlid; | |
1855 | resp.dest.sl = attr->ah_attr.sl; | |
1856 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
1857 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
1858 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
1859 | resp.dest.port_num = attr->ah_attr.port_num; | |
1860 | ||
1861 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
1862 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
1863 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
1864 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
1865 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
1866 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
1867 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
1868 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
1869 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
1870 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
1871 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
1872 | ||
1873 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
1874 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
1875 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
1876 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
1877 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 1878 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
1879 | |
1880 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1881 | &resp, sizeof resp)) | |
1882 | ret = -EFAULT; | |
1883 | ||
1884 | out: | |
1885 | kfree(attr); | |
1886 | kfree(init_attr); | |
1887 | ||
1888 | return ret ? ret : in_len; | |
1889 | } | |
1890 | ||
9977f4f6 SH |
1891 | /* Remove ignored fields set in the attribute mask */ |
1892 | static int modify_qp_mask(enum ib_qp_type qp_type, int mask) | |
1893 | { | |
1894 | switch (qp_type) { | |
1895 | case IB_QPT_XRC_INI: | |
1896 | return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); | |
b93f3c18 SH |
1897 | case IB_QPT_XRC_TGT: |
1898 | return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | | |
1899 | IB_QP_RNR_RETRY); | |
9977f4f6 SH |
1900 | default: |
1901 | return mask; | |
1902 | } | |
1903 | } | |
1904 | ||
bc38a6ab RD |
1905 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
1906 | const char __user *buf, int in_len, | |
1907 | int out_len) | |
1908 | { | |
1909 | struct ib_uverbs_modify_qp cmd; | |
9bc57e2d | 1910 | struct ib_udata udata; |
bc38a6ab RD |
1911 | struct ib_qp *qp; |
1912 | struct ib_qp_attr *attr; | |
1913 | int ret; | |
1914 | ||
1915 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1916 | return -EFAULT; | |
1917 | ||
9bc57e2d RC |
1918 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
1919 | out_len); | |
1920 | ||
bc38a6ab RD |
1921 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
1922 | if (!attr) | |
1923 | return -ENOMEM; | |
1924 | ||
9ead190b RD |
1925 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
1926 | if (!qp) { | |
bc38a6ab RD |
1927 | ret = -EINVAL; |
1928 | goto out; | |
1929 | } | |
1930 | ||
1931 | attr->qp_state = cmd.qp_state; | |
1932 | attr->cur_qp_state = cmd.cur_qp_state; | |
1933 | attr->path_mtu = cmd.path_mtu; | |
1934 | attr->path_mig_state = cmd.path_mig_state; | |
1935 | attr->qkey = cmd.qkey; | |
1936 | attr->rq_psn = cmd.rq_psn; | |
1937 | attr->sq_psn = cmd.sq_psn; | |
1938 | attr->dest_qp_num = cmd.dest_qp_num; | |
1939 | attr->qp_access_flags = cmd.qp_access_flags; | |
1940 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 1941 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
1942 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
1943 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
1944 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
1945 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
1946 | attr->port_num = cmd.port_num; | |
1947 | attr->timeout = cmd.timeout; | |
1948 | attr->retry_cnt = cmd.retry_cnt; | |
1949 | attr->rnr_retry = cmd.rnr_retry; | |
1950 | attr->alt_port_num = cmd.alt_port_num; | |
1951 | attr->alt_timeout = cmd.alt_timeout; | |
1952 | ||
1953 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
1954 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
1955 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
1956 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
1957 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
1958 | attr->ah_attr.dlid = cmd.dest.dlid; | |
1959 | attr->ah_attr.sl = cmd.dest.sl; | |
1960 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
1961 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
1962 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
1963 | attr->ah_attr.port_num = cmd.dest.port_num; | |
1964 | ||
1965 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
1966 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
1967 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
1968 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
1969 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
1970 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
1971 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
1972 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
1973 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
1974 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
1975 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
1976 | ||
0e0ec7e0 SH |
1977 | if (qp->real_qp == qp) { |
1978 | ret = qp->device->modify_qp(qp, attr, | |
1979 | modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata); | |
1980 | } else { | |
1981 | ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask)); | |
1982 | } | |
9ead190b RD |
1983 | |
1984 | put_qp_read(qp); | |
1985 | ||
bc38a6ab RD |
1986 | if (ret) |
1987 | goto out; | |
1988 | ||
1989 | ret = in_len; | |
1990 | ||
1991 | out: | |
bc38a6ab RD |
1992 | kfree(attr); |
1993 | ||
1994 | return ret; | |
1995 | } | |
1996 | ||
1997 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
1998 | const char __user *buf, int in_len, | |
1999 | int out_len) | |
2000 | { | |
63aaf647 RD |
2001 | struct ib_uverbs_destroy_qp cmd; |
2002 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 2003 | struct ib_uobject *uobj; |
63aaf647 | 2004 | struct ib_qp *qp; |
9ead190b | 2005 | struct ib_uqp_object *obj; |
63aaf647 | 2006 | int ret = -EINVAL; |
bc38a6ab RD |
2007 | |
2008 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2009 | return -EFAULT; | |
2010 | ||
63aaf647 RD |
2011 | memset(&resp, 0, sizeof resp); |
2012 | ||
9ead190b RD |
2013 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
2014 | if (!uobj) | |
2015 | return -EINVAL; | |
2016 | qp = uobj->object; | |
2017 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 2018 | |
9ead190b RD |
2019 | if (!list_empty(&obj->mcast_list)) { |
2020 | put_uobj_write(uobj); | |
2021 | return -EBUSY; | |
f4e40156 | 2022 | } |
bc38a6ab RD |
2023 | |
2024 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
2025 | if (!ret) |
2026 | uobj->live = 0; | |
2027 | ||
2028 | put_uobj_write(uobj); | |
2029 | ||
bc38a6ab | 2030 | if (ret) |
9ead190b | 2031 | return ret; |
bc38a6ab | 2032 | |
846be90d YH |
2033 | if (obj->uxrcd) |
2034 | atomic_dec(&obj->uxrcd->refcnt); | |
2035 | ||
9ead190b | 2036 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 2037 | |
95ed644f | 2038 | mutex_lock(&file->mutex); |
9ead190b | 2039 | list_del(&uobj->list); |
95ed644f | 2040 | mutex_unlock(&file->mutex); |
bc38a6ab | 2041 | |
9ead190b | 2042 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 2043 | |
9ead190b | 2044 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 2045 | |
9ead190b | 2046 | put_uobj(uobj); |
bc38a6ab | 2047 | |
63aaf647 RD |
2048 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2049 | &resp, sizeof resp)) | |
9ead190b | 2050 | return -EFAULT; |
bc38a6ab | 2051 | |
9ead190b | 2052 | return in_len; |
bc38a6ab RD |
2053 | } |
2054 | ||
67cdb40c | 2055 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
2056 | const char __user *buf, int in_len, |
2057 | int out_len) | |
67cdb40c RD |
2058 | { |
2059 | struct ib_uverbs_post_send cmd; | |
2060 | struct ib_uverbs_post_send_resp resp; | |
2061 | struct ib_uverbs_send_wr *user_wr; | |
2062 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
2063 | struct ib_qp *qp; | |
2064 | int i, sg_ind; | |
9ead190b | 2065 | int is_ud; |
67cdb40c RD |
2066 | ssize_t ret = -EINVAL; |
2067 | ||
2068 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2069 | return -EFAULT; | |
2070 | ||
2071 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
2072 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
2073 | return -EINVAL; | |
2074 | ||
2075 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
2076 | return -EINVAL; | |
2077 | ||
2078 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
2079 | if (!user_wr) | |
2080 | return -ENOMEM; | |
2081 | ||
9ead190b RD |
2082 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2083 | if (!qp) | |
67cdb40c RD |
2084 | goto out; |
2085 | ||
9ead190b | 2086 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
2087 | sg_ind = 0; |
2088 | last = NULL; | |
2089 | for (i = 0; i < cmd.wr_count; ++i) { | |
2090 | if (copy_from_user(user_wr, | |
2091 | buf + sizeof cmd + i * cmd.wqe_size, | |
2092 | cmd.wqe_size)) { | |
2093 | ret = -EFAULT; | |
9ead190b | 2094 | goto out_put; |
67cdb40c RD |
2095 | } |
2096 | ||
2097 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
2098 | ret = -EINVAL; | |
9ead190b | 2099 | goto out_put; |
67cdb40c RD |
2100 | } |
2101 | ||
2102 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
2103 | user_wr->num_sge * sizeof (struct ib_sge), | |
2104 | GFP_KERNEL); | |
2105 | if (!next) { | |
2106 | ret = -ENOMEM; | |
9ead190b | 2107 | goto out_put; |
67cdb40c RD |
2108 | } |
2109 | ||
2110 | if (!last) | |
2111 | wr = next; | |
2112 | else | |
2113 | last->next = next; | |
2114 | last = next; | |
2115 | ||
2116 | next->next = NULL; | |
2117 | next->wr_id = user_wr->wr_id; | |
2118 | next->num_sge = user_wr->num_sge; | |
2119 | next->opcode = user_wr->opcode; | |
2120 | next->send_flags = user_wr->send_flags; | |
67cdb40c | 2121 | |
9ead190b RD |
2122 | if (is_ud) { |
2123 | next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, | |
2124 | file->ucontext); | |
67cdb40c RD |
2125 | if (!next->wr.ud.ah) { |
2126 | ret = -EINVAL; | |
9ead190b | 2127 | goto out_put; |
67cdb40c RD |
2128 | } |
2129 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
2130 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
6b7d103c LI |
2131 | if (next->opcode == IB_WR_SEND_WITH_IMM) |
2132 | next->ex.imm_data = | |
2133 | (__be32 __force) user_wr->ex.imm_data; | |
67cdb40c RD |
2134 | } else { |
2135 | switch (next->opcode) { | |
67cdb40c | 2136 | case IB_WR_RDMA_WRITE_WITH_IMM: |
0f39cf3d RD |
2137 | next->ex.imm_data = |
2138 | (__be32 __force) user_wr->ex.imm_data; | |
2139 | case IB_WR_RDMA_WRITE: | |
67cdb40c RD |
2140 | case IB_WR_RDMA_READ: |
2141 | next->wr.rdma.remote_addr = | |
2142 | user_wr->wr.rdma.remote_addr; | |
2143 | next->wr.rdma.rkey = | |
2144 | user_wr->wr.rdma.rkey; | |
2145 | break; | |
0f39cf3d RD |
2146 | case IB_WR_SEND_WITH_IMM: |
2147 | next->ex.imm_data = | |
2148 | (__be32 __force) user_wr->ex.imm_data; | |
2149 | break; | |
2150 | case IB_WR_SEND_WITH_INV: | |
2151 | next->ex.invalidate_rkey = | |
2152 | user_wr->ex.invalidate_rkey; | |
2153 | break; | |
67cdb40c RD |
2154 | case IB_WR_ATOMIC_CMP_AND_SWP: |
2155 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
2156 | next->wr.atomic.remote_addr = | |
2157 | user_wr->wr.atomic.remote_addr; | |
2158 | next->wr.atomic.compare_add = | |
2159 | user_wr->wr.atomic.compare_add; | |
2160 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
2161 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
2162 | break; | |
2163 | default: | |
2164 | break; | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | if (next->num_sge) { | |
2169 | next->sg_list = (void *) next + | |
2170 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2171 | if (copy_from_user(next->sg_list, | |
2172 | buf + sizeof cmd + | |
2173 | cmd.wr_count * cmd.wqe_size + | |
2174 | sg_ind * sizeof (struct ib_sge), | |
2175 | next->num_sge * sizeof (struct ib_sge))) { | |
2176 | ret = -EFAULT; | |
9ead190b | 2177 | goto out_put; |
67cdb40c RD |
2178 | } |
2179 | sg_ind += next->num_sge; | |
2180 | } else | |
2181 | next->sg_list = NULL; | |
2182 | } | |
2183 | ||
2184 | resp.bad_wr = 0; | |
0e0ec7e0 | 2185 | ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); |
67cdb40c RD |
2186 | if (ret) |
2187 | for (next = wr; next; next = next->next) { | |
2188 | ++resp.bad_wr; | |
2189 | if (next == bad_wr) | |
2190 | break; | |
2191 | } | |
2192 | ||
2193 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2194 | &resp, sizeof resp)) | |
2195 | ret = -EFAULT; | |
2196 | ||
9ead190b RD |
2197 | out_put: |
2198 | put_qp_read(qp); | |
67cdb40c RD |
2199 | |
2200 | while (wr) { | |
9ead190b RD |
2201 | if (is_ud && wr->wr.ud.ah) |
2202 | put_ah_read(wr->wr.ud.ah); | |
67cdb40c RD |
2203 | next = wr->next; |
2204 | kfree(wr); | |
2205 | wr = next; | |
2206 | } | |
2207 | ||
18320828 | 2208 | out: |
67cdb40c RD |
2209 | kfree(user_wr); |
2210 | ||
2211 | return ret ? ret : in_len; | |
2212 | } | |
2213 | ||
2214 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
2215 | int in_len, | |
2216 | u32 wr_count, | |
2217 | u32 sge_count, | |
2218 | u32 wqe_size) | |
2219 | { | |
2220 | struct ib_uverbs_recv_wr *user_wr; | |
2221 | struct ib_recv_wr *wr = NULL, *last, *next; | |
2222 | int sg_ind; | |
2223 | int i; | |
2224 | int ret; | |
2225 | ||
2226 | if (in_len < wqe_size * wr_count + | |
2227 | sge_count * sizeof (struct ib_uverbs_sge)) | |
2228 | return ERR_PTR(-EINVAL); | |
2229 | ||
2230 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
2231 | return ERR_PTR(-EINVAL); | |
2232 | ||
2233 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
2234 | if (!user_wr) | |
2235 | return ERR_PTR(-ENOMEM); | |
2236 | ||
2237 | sg_ind = 0; | |
2238 | last = NULL; | |
2239 | for (i = 0; i < wr_count; ++i) { | |
2240 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
2241 | wqe_size)) { | |
2242 | ret = -EFAULT; | |
2243 | goto err; | |
2244 | } | |
2245 | ||
2246 | if (user_wr->num_sge + sg_ind > sge_count) { | |
2247 | ret = -EINVAL; | |
2248 | goto err; | |
2249 | } | |
2250 | ||
2251 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
2252 | user_wr->num_sge * sizeof (struct ib_sge), | |
2253 | GFP_KERNEL); | |
2254 | if (!next) { | |
2255 | ret = -ENOMEM; | |
2256 | goto err; | |
2257 | } | |
2258 | ||
2259 | if (!last) | |
2260 | wr = next; | |
2261 | else | |
2262 | last->next = next; | |
2263 | last = next; | |
2264 | ||
2265 | next->next = NULL; | |
2266 | next->wr_id = user_wr->wr_id; | |
2267 | next->num_sge = user_wr->num_sge; | |
2268 | ||
2269 | if (next->num_sge) { | |
2270 | next->sg_list = (void *) next + | |
2271 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2272 | if (copy_from_user(next->sg_list, | |
2273 | buf + wr_count * wqe_size + | |
2274 | sg_ind * sizeof (struct ib_sge), | |
2275 | next->num_sge * sizeof (struct ib_sge))) { | |
2276 | ret = -EFAULT; | |
2277 | goto err; | |
2278 | } | |
2279 | sg_ind += next->num_sge; | |
2280 | } else | |
2281 | next->sg_list = NULL; | |
2282 | } | |
2283 | ||
2284 | kfree(user_wr); | |
2285 | return wr; | |
2286 | ||
2287 | err: | |
2288 | kfree(user_wr); | |
2289 | ||
2290 | while (wr) { | |
2291 | next = wr->next; | |
2292 | kfree(wr); | |
2293 | wr = next; | |
2294 | } | |
2295 | ||
2296 | return ERR_PTR(ret); | |
2297 | } | |
2298 | ||
2299 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
2300 | const char __user *buf, int in_len, |
2301 | int out_len) | |
67cdb40c RD |
2302 | { |
2303 | struct ib_uverbs_post_recv cmd; | |
2304 | struct ib_uverbs_post_recv_resp resp; | |
2305 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2306 | struct ib_qp *qp; | |
2307 | ssize_t ret = -EINVAL; | |
2308 | ||
2309 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2310 | return -EFAULT; | |
2311 | ||
2312 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2313 | in_len - sizeof cmd, cmd.wr_count, | |
2314 | cmd.sge_count, cmd.wqe_size); | |
2315 | if (IS_ERR(wr)) | |
2316 | return PTR_ERR(wr); | |
2317 | ||
9ead190b RD |
2318 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2319 | if (!qp) | |
67cdb40c RD |
2320 | goto out; |
2321 | ||
2322 | resp.bad_wr = 0; | |
0e0ec7e0 | 2323 | ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); |
9ead190b RD |
2324 | |
2325 | put_qp_read(qp); | |
2326 | ||
67cdb40c RD |
2327 | if (ret) |
2328 | for (next = wr; next; next = next->next) { | |
2329 | ++resp.bad_wr; | |
2330 | if (next == bad_wr) | |
2331 | break; | |
2332 | } | |
2333 | ||
67cdb40c RD |
2334 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2335 | &resp, sizeof resp)) | |
2336 | ret = -EFAULT; | |
2337 | ||
2338 | out: | |
67cdb40c RD |
2339 | while (wr) { |
2340 | next = wr->next; | |
2341 | kfree(wr); | |
2342 | wr = next; | |
2343 | } | |
2344 | ||
2345 | return ret ? ret : in_len; | |
2346 | } | |
2347 | ||
2348 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
2349 | const char __user *buf, int in_len, |
2350 | int out_len) | |
67cdb40c RD |
2351 | { |
2352 | struct ib_uverbs_post_srq_recv cmd; | |
2353 | struct ib_uverbs_post_srq_recv_resp resp; | |
2354 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2355 | struct ib_srq *srq; | |
2356 | ssize_t ret = -EINVAL; | |
2357 | ||
2358 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2359 | return -EFAULT; | |
2360 | ||
2361 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2362 | in_len - sizeof cmd, cmd.wr_count, | |
2363 | cmd.sge_count, cmd.wqe_size); | |
2364 | if (IS_ERR(wr)) | |
2365 | return PTR_ERR(wr); | |
2366 | ||
9ead190b RD |
2367 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2368 | if (!srq) | |
67cdb40c RD |
2369 | goto out; |
2370 | ||
2371 | resp.bad_wr = 0; | |
2372 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
2373 | |
2374 | put_srq_read(srq); | |
2375 | ||
67cdb40c RD |
2376 | if (ret) |
2377 | for (next = wr; next; next = next->next) { | |
2378 | ++resp.bad_wr; | |
2379 | if (next == bad_wr) | |
2380 | break; | |
2381 | } | |
2382 | ||
67cdb40c RD |
2383 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2384 | &resp, sizeof resp)) | |
2385 | ret = -EFAULT; | |
2386 | ||
2387 | out: | |
67cdb40c RD |
2388 | while (wr) { |
2389 | next = wr->next; | |
2390 | kfree(wr); | |
2391 | wr = next; | |
2392 | } | |
2393 | ||
2394 | return ret ? ret : in_len; | |
2395 | } | |
2396 | ||
2397 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
2398 | const char __user *buf, int in_len, | |
2399 | int out_len) | |
2400 | { | |
2401 | struct ib_uverbs_create_ah cmd; | |
2402 | struct ib_uverbs_create_ah_resp resp; | |
2403 | struct ib_uobject *uobj; | |
2404 | struct ib_pd *pd; | |
2405 | struct ib_ah *ah; | |
2406 | struct ib_ah_attr attr; | |
2407 | int ret; | |
2408 | ||
2409 | if (out_len < sizeof resp) | |
2410 | return -ENOSPC; | |
2411 | ||
2412 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2413 | return -EFAULT; | |
2414 | ||
2415 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
2416 | if (!uobj) | |
2417 | return -ENOMEM; | |
2418 | ||
3bea57a5 | 2419 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_class); |
9ead190b | 2420 | down_write(&uobj->mutex); |
67cdb40c | 2421 | |
9ead190b RD |
2422 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
2423 | if (!pd) { | |
67cdb40c | 2424 | ret = -EINVAL; |
9ead190b | 2425 | goto err; |
67cdb40c RD |
2426 | } |
2427 | ||
67cdb40c RD |
2428 | attr.dlid = cmd.attr.dlid; |
2429 | attr.sl = cmd.attr.sl; | |
2430 | attr.src_path_bits = cmd.attr.src_path_bits; | |
2431 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 2432 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
2433 | attr.port_num = cmd.attr.port_num; |
2434 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
2435 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
2436 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
2437 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
2438 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); | |
2439 | ||
2440 | ah = ib_create_ah(pd, &attr); | |
2441 | if (IS_ERR(ah)) { | |
2442 | ret = PTR_ERR(ah); | |
ec924b47 | 2443 | goto err_put; |
67cdb40c RD |
2444 | } |
2445 | ||
9ead190b RD |
2446 | ah->uobject = uobj; |
2447 | uobj->object = ah; | |
67cdb40c | 2448 | |
9ead190b | 2449 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
2450 | if (ret) |
2451 | goto err_destroy; | |
2452 | ||
2453 | resp.ah_handle = uobj->id; | |
2454 | ||
2455 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2456 | &resp, sizeof resp)) { | |
2457 | ret = -EFAULT; | |
9ead190b | 2458 | goto err_copy; |
67cdb40c RD |
2459 | } |
2460 | ||
9ead190b RD |
2461 | put_pd_read(pd); |
2462 | ||
95ed644f | 2463 | mutex_lock(&file->mutex); |
67cdb40c | 2464 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 2465 | mutex_unlock(&file->mutex); |
67cdb40c | 2466 | |
9ead190b RD |
2467 | uobj->live = 1; |
2468 | ||
2469 | up_write(&uobj->mutex); | |
67cdb40c RD |
2470 | |
2471 | return in_len; | |
2472 | ||
9ead190b RD |
2473 | err_copy: |
2474 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
2475 | |
2476 | err_destroy: | |
2477 | ib_destroy_ah(ah); | |
2478 | ||
ec924b47 MT |
2479 | err_put: |
2480 | put_pd_read(pd); | |
2481 | ||
9ead190b RD |
2482 | err: |
2483 | put_uobj_write(uobj); | |
67cdb40c RD |
2484 | return ret; |
2485 | } | |
2486 | ||
2487 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
2488 | const char __user *buf, int in_len, int out_len) | |
2489 | { | |
2490 | struct ib_uverbs_destroy_ah cmd; | |
2491 | struct ib_ah *ah; | |
2492 | struct ib_uobject *uobj; | |
9ead190b | 2493 | int ret; |
67cdb40c RD |
2494 | |
2495 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2496 | return -EFAULT; | |
2497 | ||
9ead190b RD |
2498 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
2499 | if (!uobj) | |
2500 | return -EINVAL; | |
2501 | ah = uobj->object; | |
67cdb40c | 2502 | |
9ead190b RD |
2503 | ret = ib_destroy_ah(ah); |
2504 | if (!ret) | |
2505 | uobj->live = 0; | |
67cdb40c | 2506 | |
9ead190b | 2507 | put_uobj_write(uobj); |
67cdb40c | 2508 | |
67cdb40c | 2509 | if (ret) |
9ead190b | 2510 | return ret; |
67cdb40c | 2511 | |
9ead190b | 2512 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 2513 | |
95ed644f | 2514 | mutex_lock(&file->mutex); |
67cdb40c | 2515 | list_del(&uobj->list); |
95ed644f | 2516 | mutex_unlock(&file->mutex); |
67cdb40c | 2517 | |
9ead190b | 2518 | put_uobj(uobj); |
67cdb40c | 2519 | |
9ead190b | 2520 | return in_len; |
67cdb40c RD |
2521 | } |
2522 | ||
bc38a6ab RD |
2523 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
2524 | const char __user *buf, int in_len, | |
2525 | int out_len) | |
2526 | { | |
2527 | struct ib_uverbs_attach_mcast cmd; | |
2528 | struct ib_qp *qp; | |
9ead190b | 2529 | struct ib_uqp_object *obj; |
f4e40156 | 2530 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 2531 | int ret; |
bc38a6ab RD |
2532 | |
2533 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2534 | return -EFAULT; | |
2535 | ||
e214a0fe | 2536 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2537 | if (!qp) |
2538 | return -EINVAL; | |
f4e40156 | 2539 | |
9ead190b | 2540 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 2541 | |
9ead190b | 2542 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
2543 | if (cmd.mlid == mcast->lid && |
2544 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
2545 | ret = 0; | |
9ead190b | 2546 | goto out_put; |
f4e40156 JM |
2547 | } |
2548 | ||
2549 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
2550 | if (!mcast) { | |
2551 | ret = -ENOMEM; | |
9ead190b | 2552 | goto out_put; |
f4e40156 JM |
2553 | } |
2554 | ||
2555 | mcast->lid = cmd.mlid; | |
2556 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 2557 | |
f4e40156 | 2558 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
2559 | if (!ret) |
2560 | list_add_tail(&mcast->list, &obj->mcast_list); | |
2561 | else | |
f4e40156 JM |
2562 | kfree(mcast); |
2563 | ||
9ead190b | 2564 | out_put: |
e214a0fe | 2565 | put_qp_write(qp); |
bc38a6ab RD |
2566 | |
2567 | return ret ? ret : in_len; | |
2568 | } | |
2569 | ||
2570 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
2571 | const char __user *buf, int in_len, | |
2572 | int out_len) | |
2573 | { | |
2574 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 2575 | struct ib_uqp_object *obj; |
bc38a6ab | 2576 | struct ib_qp *qp; |
f4e40156 | 2577 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
2578 | int ret = -EINVAL; |
2579 | ||
2580 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2581 | return -EFAULT; | |
2582 | ||
e214a0fe | 2583 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2584 | if (!qp) |
2585 | return -EINVAL; | |
bc38a6ab | 2586 | |
f4e40156 JM |
2587 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
2588 | if (ret) | |
9ead190b | 2589 | goto out_put; |
f4e40156 | 2590 | |
9ead190b | 2591 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 2592 | |
9ead190b | 2593 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
2594 | if (cmd.mlid == mcast->lid && |
2595 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
2596 | list_del(&mcast->list); | |
2597 | kfree(mcast); | |
2598 | break; | |
2599 | } | |
2600 | ||
9ead190b | 2601 | out_put: |
e214a0fe | 2602 | put_qp_write(qp); |
bc38a6ab RD |
2603 | |
2604 | return ret ? ret : in_len; | |
2605 | } | |
f520ba5a | 2606 | |
7afbddfa | 2607 | #ifdef CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING |
436f2ad0 HHZ |
2608 | static int kern_spec_to_ib_spec(struct ib_kern_spec *kern_spec, |
2609 | union ib_flow_spec *ib_spec) | |
2610 | { | |
2611 | ib_spec->type = kern_spec->type; | |
2612 | ||
2613 | switch (ib_spec->type) { | |
2614 | case IB_FLOW_SPEC_ETH: | |
2615 | ib_spec->eth.size = sizeof(struct ib_flow_spec_eth); | |
2616 | if (ib_spec->eth.size != kern_spec->eth.size) | |
2617 | return -EINVAL; | |
2618 | memcpy(&ib_spec->eth.val, &kern_spec->eth.val, | |
2619 | sizeof(struct ib_flow_eth_filter)); | |
2620 | memcpy(&ib_spec->eth.mask, &kern_spec->eth.mask, | |
2621 | sizeof(struct ib_flow_eth_filter)); | |
2622 | break; | |
2623 | case IB_FLOW_SPEC_IPV4: | |
2624 | ib_spec->ipv4.size = sizeof(struct ib_flow_spec_ipv4); | |
2625 | if (ib_spec->ipv4.size != kern_spec->ipv4.size) | |
2626 | return -EINVAL; | |
2627 | memcpy(&ib_spec->ipv4.val, &kern_spec->ipv4.val, | |
2628 | sizeof(struct ib_flow_ipv4_filter)); | |
2629 | memcpy(&ib_spec->ipv4.mask, &kern_spec->ipv4.mask, | |
2630 | sizeof(struct ib_flow_ipv4_filter)); | |
2631 | break; | |
2632 | case IB_FLOW_SPEC_TCP: | |
2633 | case IB_FLOW_SPEC_UDP: | |
2634 | ib_spec->tcp_udp.size = sizeof(struct ib_flow_spec_tcp_udp); | |
2635 | if (ib_spec->tcp_udp.size != kern_spec->tcp_udp.size) | |
2636 | return -EINVAL; | |
2637 | memcpy(&ib_spec->tcp_udp.val, &kern_spec->tcp_udp.val, | |
2638 | sizeof(struct ib_flow_tcp_udp_filter)); | |
2639 | memcpy(&ib_spec->tcp_udp.mask, &kern_spec->tcp_udp.mask, | |
2640 | sizeof(struct ib_flow_tcp_udp_filter)); | |
2641 | break; | |
2642 | default: | |
2643 | return -EINVAL; | |
2644 | } | |
2645 | return 0; | |
2646 | } | |
2647 | ||
2648 | ssize_t ib_uverbs_create_flow(struct ib_uverbs_file *file, | |
2649 | const char __user *buf, int in_len, | |
2650 | int out_len) | |
2651 | { | |
2652 | struct ib_uverbs_create_flow cmd; | |
2653 | struct ib_uverbs_create_flow_resp resp; | |
2654 | struct ib_uobject *uobj; | |
2655 | struct ib_flow *flow_id; | |
2656 | struct ib_kern_flow_attr *kern_flow_attr; | |
2657 | struct ib_flow_attr *flow_attr; | |
2658 | struct ib_qp *qp; | |
2659 | int err = 0; | |
2660 | void *kern_spec; | |
2661 | void *ib_spec; | |
2662 | int i; | |
2663 | int kern_attr_size; | |
2664 | ||
2665 | if (out_len < sizeof(resp)) | |
2666 | return -ENOSPC; | |
2667 | ||
2668 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
2669 | return -EFAULT; | |
2670 | ||
22878dbc MB |
2671 | if (cmd.comp_mask) |
2672 | return -EINVAL; | |
2673 | ||
436f2ad0 HHZ |
2674 | if ((cmd.flow_attr.type == IB_FLOW_ATTR_SNIFFER && |
2675 | !capable(CAP_NET_ADMIN)) || !capable(CAP_NET_RAW)) | |
2676 | return -EPERM; | |
2677 | ||
22878dbc MB |
2678 | if (cmd.flow_attr.num_of_specs < 0 || |
2679 | cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) | |
2680 | return -EINVAL; | |
2681 | ||
2682 | kern_attr_size = cmd.flow_attr.size - sizeof(cmd) - | |
2683 | sizeof(struct ib_uverbs_cmd_hdr_ex); | |
2684 | ||
2685 | if (cmd.flow_attr.size < 0 || cmd.flow_attr.size > in_len || | |
2686 | kern_attr_size < 0 || kern_attr_size > | |
2687 | (cmd.flow_attr.num_of_specs * sizeof(struct ib_kern_spec))) | |
2688 | return -EINVAL; | |
2689 | ||
436f2ad0 HHZ |
2690 | if (cmd.flow_attr.num_of_specs) { |
2691 | kern_flow_attr = kmalloc(cmd.flow_attr.size, GFP_KERNEL); | |
2692 | if (!kern_flow_attr) | |
2693 | return -ENOMEM; | |
2694 | ||
2695 | memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr)); | |
436f2ad0 HHZ |
2696 | if (copy_from_user(kern_flow_attr + 1, buf + sizeof(cmd), |
2697 | kern_attr_size)) { | |
2698 | err = -EFAULT; | |
2699 | goto err_free_attr; | |
2700 | } | |
2701 | } else { | |
2702 | kern_flow_attr = &cmd.flow_attr; | |
2703 | kern_attr_size = sizeof(cmd.flow_attr); | |
2704 | } | |
2705 | ||
2706 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
2707 | if (!uobj) { | |
2708 | err = -ENOMEM; | |
2709 | goto err_free_attr; | |
2710 | } | |
2711 | init_uobj(uobj, 0, file->ucontext, &rule_lock_class); | |
2712 | down_write(&uobj->mutex); | |
2713 | ||
2714 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); | |
2715 | if (!qp) { | |
2716 | err = -EINVAL; | |
2717 | goto err_uobj; | |
2718 | } | |
2719 | ||
2720 | flow_attr = kmalloc(cmd.flow_attr.size, GFP_KERNEL); | |
2721 | if (!flow_attr) { | |
2722 | err = -ENOMEM; | |
2723 | goto err_put; | |
2724 | } | |
2725 | ||
2726 | flow_attr->type = kern_flow_attr->type; | |
2727 | flow_attr->priority = kern_flow_attr->priority; | |
2728 | flow_attr->num_of_specs = kern_flow_attr->num_of_specs; | |
2729 | flow_attr->port = kern_flow_attr->port; | |
2730 | flow_attr->flags = kern_flow_attr->flags; | |
2731 | flow_attr->size = sizeof(*flow_attr); | |
2732 | ||
2733 | kern_spec = kern_flow_attr + 1; | |
2734 | ib_spec = flow_attr + 1; | |
2735 | for (i = 0; i < flow_attr->num_of_specs && kern_attr_size > 0; i++) { | |
2736 | err = kern_spec_to_ib_spec(kern_spec, ib_spec); | |
2737 | if (err) | |
2738 | goto err_free; | |
2739 | flow_attr->size += | |
2740 | ((union ib_flow_spec *) ib_spec)->size; | |
2741 | kern_attr_size -= ((struct ib_kern_spec *) kern_spec)->size; | |
2742 | kern_spec += ((struct ib_kern_spec *) kern_spec)->size; | |
2743 | ib_spec += ((union ib_flow_spec *) ib_spec)->size; | |
2744 | } | |
2745 | if (kern_attr_size) { | |
2746 | pr_warn("create flow failed, %d bytes left from uverb cmd\n", | |
2747 | kern_attr_size); | |
2748 | goto err_free; | |
2749 | } | |
2750 | flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER); | |
2751 | if (IS_ERR(flow_id)) { | |
2752 | err = PTR_ERR(flow_id); | |
2753 | goto err_free; | |
2754 | } | |
2755 | flow_id->qp = qp; | |
2756 | flow_id->uobject = uobj; | |
2757 | uobj->object = flow_id; | |
2758 | ||
2759 | err = idr_add_uobj(&ib_uverbs_rule_idr, uobj); | |
2760 | if (err) | |
2761 | goto destroy_flow; | |
2762 | ||
2763 | memset(&resp, 0, sizeof(resp)); | |
2764 | resp.flow_handle = uobj->id; | |
2765 | ||
2766 | if (copy_to_user((void __user *)(unsigned long) cmd.response, | |
2767 | &resp, sizeof(resp))) { | |
2768 | err = -EFAULT; | |
2769 | goto err_copy; | |
2770 | } | |
2771 | ||
2772 | put_qp_read(qp); | |
2773 | mutex_lock(&file->mutex); | |
2774 | list_add_tail(&uobj->list, &file->ucontext->rule_list); | |
2775 | mutex_unlock(&file->mutex); | |
2776 | ||
2777 | uobj->live = 1; | |
2778 | ||
2779 | up_write(&uobj->mutex); | |
2780 | kfree(flow_attr); | |
2781 | if (cmd.flow_attr.num_of_specs) | |
2782 | kfree(kern_flow_attr); | |
2783 | return in_len; | |
2784 | err_copy: | |
2785 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
2786 | destroy_flow: | |
2787 | ib_destroy_flow(flow_id); | |
2788 | err_free: | |
2789 | kfree(flow_attr); | |
2790 | err_put: | |
2791 | put_qp_read(qp); | |
2792 | err_uobj: | |
2793 | put_uobj_write(uobj); | |
2794 | err_free_attr: | |
2795 | if (cmd.flow_attr.num_of_specs) | |
2796 | kfree(kern_flow_attr); | |
2797 | return err; | |
2798 | } | |
2799 | ||
2800 | ssize_t ib_uverbs_destroy_flow(struct ib_uverbs_file *file, | |
2801 | const char __user *buf, int in_len, | |
2802 | int out_len) { | |
2803 | struct ib_uverbs_destroy_flow cmd; | |
2804 | struct ib_flow *flow_id; | |
2805 | struct ib_uobject *uobj; | |
2806 | int ret; | |
2807 | ||
2808 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
2809 | return -EFAULT; | |
2810 | ||
2811 | uobj = idr_write_uobj(&ib_uverbs_rule_idr, cmd.flow_handle, | |
2812 | file->ucontext); | |
2813 | if (!uobj) | |
2814 | return -EINVAL; | |
2815 | flow_id = uobj->object; | |
2816 | ||
2817 | ret = ib_destroy_flow(flow_id); | |
2818 | if (!ret) | |
2819 | uobj->live = 0; | |
2820 | ||
2821 | put_uobj_write(uobj); | |
2822 | ||
2823 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
2824 | ||
2825 | mutex_lock(&file->mutex); | |
2826 | list_del(&uobj->list); | |
2827 | mutex_unlock(&file->mutex); | |
2828 | ||
2829 | put_uobj(uobj); | |
2830 | ||
2831 | return ret ? ret : in_len; | |
2832 | } | |
7afbddfa | 2833 | #endif /* CONFIG_INFINIBAND_EXPERIMENTAL_UVERBS_FLOW_STEERING */ |
436f2ad0 | 2834 | |
c89d1bed SH |
2835 | static int __uverbs_create_xsrq(struct ib_uverbs_file *file, |
2836 | struct ib_uverbs_create_xsrq *cmd, | |
2837 | struct ib_udata *udata) | |
f520ba5a | 2838 | { |
f520ba5a | 2839 | struct ib_uverbs_create_srq_resp resp; |
8541f8de | 2840 | struct ib_usrq_object *obj; |
f520ba5a RD |
2841 | struct ib_pd *pd; |
2842 | struct ib_srq *srq; | |
8541f8de | 2843 | struct ib_uobject *uninitialized_var(xrcd_uobj); |
f520ba5a RD |
2844 | struct ib_srq_init_attr attr; |
2845 | int ret; | |
2846 | ||
9ead190b RD |
2847 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
2848 | if (!obj) | |
f520ba5a RD |
2849 | return -ENOMEM; |
2850 | ||
3bea57a5 | 2851 | init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_class); |
8541f8de | 2852 | down_write(&obj->uevent.uobject.mutex); |
f520ba5a | 2853 | |
8541f8de | 2854 | if (cmd->srq_type == IB_SRQT_XRC) { |
8541f8de SH |
2855 | attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj); |
2856 | if (!attr.ext.xrc.xrcd) { | |
2857 | ret = -EINVAL; | |
5909ce54 | 2858 | goto err; |
8541f8de SH |
2859 | } |
2860 | ||
2861 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); | |
2862 | atomic_inc(&obj->uxrcd->refcnt); | |
5909ce54 RD |
2863 | |
2864 | attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0); | |
2865 | if (!attr.ext.xrc.cq) { | |
2866 | ret = -EINVAL; | |
2867 | goto err_put_xrcd; | |
2868 | } | |
2869 | } | |
2870 | ||
2871 | pd = idr_read_pd(cmd->pd_handle, file->ucontext); | |
2872 | if (!pd) { | |
2873 | ret = -EINVAL; | |
2874 | goto err_put_cq; | |
8541f8de SH |
2875 | } |
2876 | ||
f520ba5a RD |
2877 | attr.event_handler = ib_uverbs_srq_event_handler; |
2878 | attr.srq_context = file; | |
8541f8de SH |
2879 | attr.srq_type = cmd->srq_type; |
2880 | attr.attr.max_wr = cmd->max_wr; | |
2881 | attr.attr.max_sge = cmd->max_sge; | |
2882 | attr.attr.srq_limit = cmd->srq_limit; | |
f520ba5a | 2883 | |
8541f8de SH |
2884 | obj->uevent.events_reported = 0; |
2885 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
f520ba5a | 2886 | |
8541f8de | 2887 | srq = pd->device->create_srq(pd, &attr, udata); |
f520ba5a RD |
2888 | if (IS_ERR(srq)) { |
2889 | ret = PTR_ERR(srq); | |
ec924b47 | 2890 | goto err_put; |
f520ba5a RD |
2891 | } |
2892 | ||
8541f8de SH |
2893 | srq->device = pd->device; |
2894 | srq->pd = pd; | |
2895 | srq->srq_type = cmd->srq_type; | |
2896 | srq->uobject = &obj->uevent.uobject; | |
f520ba5a RD |
2897 | srq->event_handler = attr.event_handler; |
2898 | srq->srq_context = attr.srq_context; | |
8541f8de SH |
2899 | |
2900 | if (cmd->srq_type == IB_SRQT_XRC) { | |
2901 | srq->ext.xrc.cq = attr.ext.xrc.cq; | |
2902 | srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; | |
2903 | atomic_inc(&attr.ext.xrc.cq->usecnt); | |
2904 | atomic_inc(&attr.ext.xrc.xrcd->usecnt); | |
2905 | } | |
2906 | ||
f520ba5a RD |
2907 | atomic_inc(&pd->usecnt); |
2908 | atomic_set(&srq->usecnt, 0); | |
2909 | ||
8541f8de SH |
2910 | obj->uevent.uobject.object = srq; |
2911 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); | |
f520ba5a RD |
2912 | if (ret) |
2913 | goto err_destroy; | |
2914 | ||
9ead190b | 2915 | memset(&resp, 0, sizeof resp); |
8541f8de | 2916 | resp.srq_handle = obj->uevent.uobject.id; |
ea88fd16 DB |
2917 | resp.max_wr = attr.attr.max_wr; |
2918 | resp.max_sge = attr.attr.max_sge; | |
8541f8de SH |
2919 | if (cmd->srq_type == IB_SRQT_XRC) |
2920 | resp.srqn = srq->ext.xrc.srq_num; | |
f520ba5a | 2921 | |
8541f8de | 2922 | if (copy_to_user((void __user *) (unsigned long) cmd->response, |
f520ba5a RD |
2923 | &resp, sizeof resp)) { |
2924 | ret = -EFAULT; | |
9ead190b | 2925 | goto err_copy; |
f520ba5a RD |
2926 | } |
2927 | ||
8541f8de SH |
2928 | if (cmd->srq_type == IB_SRQT_XRC) { |
2929 | put_uobj_read(xrcd_uobj); | |
2930 | put_cq_read(attr.ext.xrc.cq); | |
2931 | } | |
9ead190b RD |
2932 | put_pd_read(pd); |
2933 | ||
95ed644f | 2934 | mutex_lock(&file->mutex); |
8541f8de | 2935 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list); |
95ed644f | 2936 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 2937 | |
8541f8de | 2938 | obj->uevent.uobject.live = 1; |
9ead190b | 2939 | |
8541f8de | 2940 | up_write(&obj->uevent.uobject.mutex); |
f520ba5a | 2941 | |
8541f8de | 2942 | return 0; |
f520ba5a | 2943 | |
9ead190b | 2944 | err_copy: |
8541f8de | 2945 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); |
f520ba5a RD |
2946 | |
2947 | err_destroy: | |
2948 | ib_destroy_srq(srq); | |
2949 | ||
ec924b47 | 2950 | err_put: |
5909ce54 | 2951 | put_pd_read(pd); |
8541f8de SH |
2952 | |
2953 | err_put_cq: | |
2954 | if (cmd->srq_type == IB_SRQT_XRC) | |
2955 | put_cq_read(attr.ext.xrc.cq); | |
2956 | ||
5909ce54 RD |
2957 | err_put_xrcd: |
2958 | if (cmd->srq_type == IB_SRQT_XRC) { | |
2959 | atomic_dec(&obj->uxrcd->refcnt); | |
2960 | put_uobj_read(xrcd_uobj); | |
2961 | } | |
ec924b47 | 2962 | |
9ead190b | 2963 | err: |
8541f8de | 2964 | put_uobj_write(&obj->uevent.uobject); |
f520ba5a RD |
2965 | return ret; |
2966 | } | |
2967 | ||
8541f8de SH |
2968 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, |
2969 | const char __user *buf, int in_len, | |
2970 | int out_len) | |
2971 | { | |
2972 | struct ib_uverbs_create_srq cmd; | |
2973 | struct ib_uverbs_create_xsrq xcmd; | |
2974 | struct ib_uverbs_create_srq_resp resp; | |
2975 | struct ib_udata udata; | |
2976 | int ret; | |
2977 | ||
2978 | if (out_len < sizeof resp) | |
2979 | return -ENOSPC; | |
2980 | ||
2981 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2982 | return -EFAULT; | |
2983 | ||
2984 | xcmd.response = cmd.response; | |
2985 | xcmd.user_handle = cmd.user_handle; | |
2986 | xcmd.srq_type = IB_SRQT_BASIC; | |
2987 | xcmd.pd_handle = cmd.pd_handle; | |
2988 | xcmd.max_wr = cmd.max_wr; | |
2989 | xcmd.max_sge = cmd.max_sge; | |
2990 | xcmd.srq_limit = cmd.srq_limit; | |
2991 | ||
2992 | INIT_UDATA(&udata, buf + sizeof cmd, | |
2993 | (unsigned long) cmd.response + sizeof resp, | |
2994 | in_len - sizeof cmd, out_len - sizeof resp); | |
2995 | ||
2996 | ret = __uverbs_create_xsrq(file, &xcmd, &udata); | |
2997 | if (ret) | |
2998 | return ret; | |
2999 | ||
3000 | return in_len; | |
3001 | } | |
3002 | ||
3003 | ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, | |
3004 | const char __user *buf, int in_len, int out_len) | |
3005 | { | |
3006 | struct ib_uverbs_create_xsrq cmd; | |
3007 | struct ib_uverbs_create_srq_resp resp; | |
3008 | struct ib_udata udata; | |
3009 | int ret; | |
3010 | ||
3011 | if (out_len < sizeof resp) | |
3012 | return -ENOSPC; | |
3013 | ||
3014 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3015 | return -EFAULT; | |
3016 | ||
3017 | INIT_UDATA(&udata, buf + sizeof cmd, | |
3018 | (unsigned long) cmd.response + sizeof resp, | |
3019 | in_len - sizeof cmd, out_len - sizeof resp); | |
3020 | ||
3021 | ret = __uverbs_create_xsrq(file, &cmd, &udata); | |
3022 | if (ret) | |
3023 | return ret; | |
3024 | ||
3025 | return in_len; | |
3026 | } | |
3027 | ||
f520ba5a RD |
3028 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, |
3029 | const char __user *buf, int in_len, | |
3030 | int out_len) | |
3031 | { | |
3032 | struct ib_uverbs_modify_srq cmd; | |
9bc57e2d | 3033 | struct ib_udata udata; |
f520ba5a RD |
3034 | struct ib_srq *srq; |
3035 | struct ib_srq_attr attr; | |
3036 | int ret; | |
3037 | ||
3038 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3039 | return -EFAULT; | |
3040 | ||
9bc57e2d RC |
3041 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
3042 | out_len); | |
3043 | ||
9ead190b RD |
3044 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
3045 | if (!srq) | |
3046 | return -EINVAL; | |
f520ba5a RD |
3047 | |
3048 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
3049 | attr.srq_limit = cmd.srq_limit; |
3050 | ||
9bc57e2d | 3051 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
f520ba5a | 3052 | |
9ead190b | 3053 | put_srq_read(srq); |
f520ba5a RD |
3054 | |
3055 | return ret ? ret : in_len; | |
3056 | } | |
3057 | ||
8bdb0e86 DB |
3058 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
3059 | const char __user *buf, | |
3060 | int in_len, int out_len) | |
3061 | { | |
3062 | struct ib_uverbs_query_srq cmd; | |
3063 | struct ib_uverbs_query_srq_resp resp; | |
3064 | struct ib_srq_attr attr; | |
3065 | struct ib_srq *srq; | |
3066 | int ret; | |
3067 | ||
3068 | if (out_len < sizeof resp) | |
3069 | return -ENOSPC; | |
3070 | ||
3071 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3072 | return -EFAULT; | |
3073 | ||
9ead190b RD |
3074 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
3075 | if (!srq) | |
3076 | return -EINVAL; | |
8bdb0e86 | 3077 | |
9ead190b | 3078 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 3079 | |
9ead190b | 3080 | put_srq_read(srq); |
8bdb0e86 DB |
3081 | |
3082 | if (ret) | |
9ead190b | 3083 | return ret; |
8bdb0e86 DB |
3084 | |
3085 | memset(&resp, 0, sizeof resp); | |
3086 | ||
3087 | resp.max_wr = attr.max_wr; | |
3088 | resp.max_sge = attr.max_sge; | |
3089 | resp.srq_limit = attr.srq_limit; | |
3090 | ||
3091 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
3092 | &resp, sizeof resp)) | |
9ead190b | 3093 | return -EFAULT; |
8bdb0e86 | 3094 | |
9ead190b | 3095 | return in_len; |
8bdb0e86 DB |
3096 | } |
3097 | ||
f520ba5a RD |
3098 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
3099 | const char __user *buf, int in_len, | |
3100 | int out_len) | |
3101 | { | |
63aaf647 RD |
3102 | struct ib_uverbs_destroy_srq cmd; |
3103 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 3104 | struct ib_uobject *uobj; |
63aaf647 | 3105 | struct ib_srq *srq; |
9ead190b | 3106 | struct ib_uevent_object *obj; |
63aaf647 | 3107 | int ret = -EINVAL; |
846be90d YH |
3108 | struct ib_usrq_object *us; |
3109 | enum ib_srq_type srq_type; | |
f520ba5a RD |
3110 | |
3111 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3112 | return -EFAULT; | |
3113 | ||
9ead190b RD |
3114 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
3115 | if (!uobj) | |
3116 | return -EINVAL; | |
3117 | srq = uobj->object; | |
3118 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
846be90d | 3119 | srq_type = srq->srq_type; |
63aaf647 | 3120 | |
9ead190b RD |
3121 | ret = ib_destroy_srq(srq); |
3122 | if (!ret) | |
3123 | uobj->live = 0; | |
f520ba5a | 3124 | |
9ead190b | 3125 | put_uobj_write(uobj); |
f520ba5a | 3126 | |
f520ba5a | 3127 | if (ret) |
9ead190b | 3128 | return ret; |
f520ba5a | 3129 | |
846be90d YH |
3130 | if (srq_type == IB_SRQT_XRC) { |
3131 | us = container_of(obj, struct ib_usrq_object, uevent); | |
3132 | atomic_dec(&us->uxrcd->refcnt); | |
3133 | } | |
3134 | ||
9ead190b | 3135 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 3136 | |
95ed644f | 3137 | mutex_lock(&file->mutex); |
9ead190b | 3138 | list_del(&uobj->list); |
95ed644f | 3139 | mutex_unlock(&file->mutex); |
f520ba5a | 3140 | |
9ead190b | 3141 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 3142 | |
9ead190b RD |
3143 | memset(&resp, 0, sizeof resp); |
3144 | resp.events_reported = obj->events_reported; | |
63aaf647 | 3145 | |
9ead190b | 3146 | put_uobj(uobj); |
f520ba5a | 3147 | |
63aaf647 RD |
3148 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
3149 | &resp, sizeof resp)) | |
3150 | ret = -EFAULT; | |
3151 | ||
f520ba5a RD |
3152 | return ret ? ret : in_len; |
3153 | } |