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bc38a6ab RD |
1 | /* |
2 | * Copyright (c) 2005 Topspin Communications. All rights reserved. | |
f7c6a7b5 | 3 | * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
eb9d3cd5 | 4 | * Copyright (c) 2005 PathScale, Inc. All rights reserved. |
8bdb0e86 | 5 | * Copyright (c) 2006 Mellanox Technologies. All rights reserved. |
bc38a6ab RD |
6 | * |
7 | * This software is available to you under a choice of one of two | |
8 | * licenses. You may choose to be licensed under the terms of the GNU | |
9 | * General Public License (GPL) Version 2, available from the file | |
10 | * COPYING in the main directory of this source tree, or the | |
11 | * OpenIB.org BSD license below: | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or | |
14 | * without modification, are permitted provided that the following | |
15 | * conditions are met: | |
16 | * | |
17 | * - Redistributions of source code must retain the above | |
18 | * copyright notice, this list of conditions and the following | |
19 | * disclaimer. | |
20 | * | |
21 | * - Redistributions in binary form must reproduce the above | |
22 | * copyright notice, this list of conditions and the following | |
23 | * disclaimer in the documentation and/or other materials | |
24 | * provided with the distribution. | |
25 | * | |
26 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
27 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
29 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
30 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
31 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
32 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
33 | * SOFTWARE. | |
bc38a6ab RD |
34 | */ |
35 | ||
6b73597e | 36 | #include <linux/file.h> |
70a30e16 | 37 | #include <linux/fs.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
8ada2c1c | 39 | #include <linux/sched.h> |
6b73597e | 40 | |
bc38a6ab RD |
41 | #include <asm/uaccess.h> |
42 | ||
43 | #include "uverbs.h" | |
ed4c54e5 | 44 | #include "core_priv.h" |
bc38a6ab | 45 | |
3bea57a5 RD |
46 | struct uverbs_lock_class { |
47 | struct lock_class_key key; | |
48 | char name[16]; | |
49 | }; | |
50 | ||
51 | static struct uverbs_lock_class pd_lock_class = { .name = "PD-uobj" }; | |
52 | static struct uverbs_lock_class mr_lock_class = { .name = "MR-uobj" }; | |
6b52a12b | 53 | static struct uverbs_lock_class mw_lock_class = { .name = "MW-uobj" }; |
3bea57a5 RD |
54 | static struct uverbs_lock_class cq_lock_class = { .name = "CQ-uobj" }; |
55 | static struct uverbs_lock_class qp_lock_class = { .name = "QP-uobj" }; | |
56 | static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" }; | |
57 | static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" }; | |
58 | static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" }; | |
436f2ad0 | 59 | static struct uverbs_lock_class rule_lock_class = { .name = "RULE-uobj" }; |
bc38a6ab | 60 | |
9ead190b RD |
61 | /* |
62 | * The ib_uobject locking scheme is as follows: | |
63 | * | |
64 | * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it | |
65 | * needs to be held during all idr operations. When an object is | |
66 | * looked up, a reference must be taken on the object's kref before | |
67 | * dropping this lock. | |
68 | * | |
69 | * - Each object also has an rwsem. This rwsem must be held for | |
70 | * reading while an operation that uses the object is performed. | |
71 | * For example, while registering an MR, the associated PD's | |
72 | * uobject.mutex must be held for reading. The rwsem must be held | |
73 | * for writing while initializing or destroying an object. | |
74 | * | |
75 | * - In addition, each object has a "live" flag. If this flag is not | |
76 | * set, then lookups of the object will fail even if it is found in | |
77 | * the idr. This handles a reader that blocks and does not acquire | |
78 | * the rwsem until after the object is destroyed. The destroy | |
79 | * operation will set the live flag to 0 and then drop the rwsem; | |
80 | * this will allow the reader to acquire the rwsem, see that the | |
81 | * live flag is 0, and then drop the rwsem and its reference to | |
82 | * object. The underlying storage will not be freed until the last | |
83 | * reference to the object is dropped. | |
84 | */ | |
85 | ||
86 | static void init_uobj(struct ib_uobject *uobj, u64 user_handle, | |
3bea57a5 | 87 | struct ib_ucontext *context, struct uverbs_lock_class *c) |
9ead190b RD |
88 | { |
89 | uobj->user_handle = user_handle; | |
90 | uobj->context = context; | |
91 | kref_init(&uobj->ref); | |
92 | init_rwsem(&uobj->mutex); | |
3bea57a5 | 93 | lockdep_set_class_and_name(&uobj->mutex, &c->key, c->name); |
9ead190b RD |
94 | uobj->live = 0; |
95 | } | |
96 | ||
97 | static void release_uobj(struct kref *kref) | |
98 | { | |
99 | kfree(container_of(kref, struct ib_uobject, ref)); | |
100 | } | |
101 | ||
102 | static void put_uobj(struct ib_uobject *uobj) | |
103 | { | |
104 | kref_put(&uobj->ref, release_uobj); | |
105 | } | |
106 | ||
107 | static void put_uobj_read(struct ib_uobject *uobj) | |
108 | { | |
109 | up_read(&uobj->mutex); | |
110 | put_uobj(uobj); | |
111 | } | |
112 | ||
113 | static void put_uobj_write(struct ib_uobject *uobj) | |
114 | { | |
115 | up_write(&uobj->mutex); | |
116 | put_uobj(uobj); | |
117 | } | |
118 | ||
119 | static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj) | |
3463175d RD |
120 | { |
121 | int ret; | |
122 | ||
3b069c5d | 123 | idr_preload(GFP_KERNEL); |
9ead190b | 124 | spin_lock(&ib_uverbs_idr_lock); |
3463175d | 125 | |
3b069c5d TH |
126 | ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT); |
127 | if (ret >= 0) | |
128 | uobj->id = ret; | |
129 | ||
130 | spin_unlock(&ib_uverbs_idr_lock); | |
131 | idr_preload_end(); | |
3463175d | 132 | |
3b069c5d | 133 | return ret < 0 ? ret : 0; |
3463175d RD |
134 | } |
135 | ||
9ead190b RD |
136 | void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj) |
137 | { | |
138 | spin_lock(&ib_uverbs_idr_lock); | |
139 | idr_remove(idr, uobj->id); | |
140 | spin_unlock(&ib_uverbs_idr_lock); | |
141 | } | |
142 | ||
143 | static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id, | |
144 | struct ib_ucontext *context) | |
145 | { | |
146 | struct ib_uobject *uobj; | |
147 | ||
148 | spin_lock(&ib_uverbs_idr_lock); | |
149 | uobj = idr_find(idr, id); | |
cbfb50e6 RD |
150 | if (uobj) { |
151 | if (uobj->context == context) | |
152 | kref_get(&uobj->ref); | |
153 | else | |
154 | uobj = NULL; | |
155 | } | |
9ead190b RD |
156 | spin_unlock(&ib_uverbs_idr_lock); |
157 | ||
158 | return uobj; | |
159 | } | |
160 | ||
161 | static struct ib_uobject *idr_read_uobj(struct idr *idr, int id, | |
1ccf6aa1 | 162 | struct ib_ucontext *context, int nested) |
9ead190b RD |
163 | { |
164 | struct ib_uobject *uobj; | |
165 | ||
166 | uobj = __idr_get_uobj(idr, id, context); | |
167 | if (!uobj) | |
168 | return NULL; | |
169 | ||
1ccf6aa1 RD |
170 | if (nested) |
171 | down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING); | |
172 | else | |
173 | down_read(&uobj->mutex); | |
9ead190b RD |
174 | if (!uobj->live) { |
175 | put_uobj_read(uobj); | |
176 | return NULL; | |
177 | } | |
178 | ||
179 | return uobj; | |
180 | } | |
181 | ||
182 | static struct ib_uobject *idr_write_uobj(struct idr *idr, int id, | |
183 | struct ib_ucontext *context) | |
184 | { | |
185 | struct ib_uobject *uobj; | |
186 | ||
187 | uobj = __idr_get_uobj(idr, id, context); | |
188 | if (!uobj) | |
189 | return NULL; | |
190 | ||
191 | down_write(&uobj->mutex); | |
192 | if (!uobj->live) { | |
193 | put_uobj_write(uobj); | |
194 | return NULL; | |
195 | } | |
196 | ||
197 | return uobj; | |
198 | } | |
199 | ||
1ccf6aa1 RD |
200 | static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context, |
201 | int nested) | |
9ead190b RD |
202 | { |
203 | struct ib_uobject *uobj; | |
204 | ||
1ccf6aa1 | 205 | uobj = idr_read_uobj(idr, id, context, nested); |
9ead190b RD |
206 | return uobj ? uobj->object : NULL; |
207 | } | |
208 | ||
209 | static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context) | |
210 | { | |
1ccf6aa1 | 211 | return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0); |
9ead190b RD |
212 | } |
213 | ||
214 | static void put_pd_read(struct ib_pd *pd) | |
215 | { | |
216 | put_uobj_read(pd->uobject); | |
217 | } | |
218 | ||
1ccf6aa1 | 219 | static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested) |
9ead190b | 220 | { |
1ccf6aa1 | 221 | return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested); |
9ead190b RD |
222 | } |
223 | ||
224 | static void put_cq_read(struct ib_cq *cq) | |
225 | { | |
226 | put_uobj_read(cq->uobject); | |
227 | } | |
228 | ||
229 | static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context) | |
230 | { | |
1ccf6aa1 | 231 | return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0); |
9ead190b RD |
232 | } |
233 | ||
234 | static void put_ah_read(struct ib_ah *ah) | |
235 | { | |
236 | put_uobj_read(ah->uobject); | |
237 | } | |
238 | ||
239 | static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context) | |
240 | { | |
1ccf6aa1 | 241 | return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0); |
9ead190b RD |
242 | } |
243 | ||
e214a0fe EC |
244 | static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context) |
245 | { | |
246 | struct ib_uobject *uobj; | |
247 | ||
248 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context); | |
249 | return uobj ? uobj->object : NULL; | |
250 | } | |
251 | ||
9ead190b RD |
252 | static void put_qp_read(struct ib_qp *qp) |
253 | { | |
254 | put_uobj_read(qp->uobject); | |
255 | } | |
256 | ||
e214a0fe EC |
257 | static void put_qp_write(struct ib_qp *qp) |
258 | { | |
259 | put_uobj_write(qp->uobject); | |
260 | } | |
261 | ||
9ead190b RD |
262 | static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context) |
263 | { | |
1ccf6aa1 | 264 | return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0); |
9ead190b RD |
265 | } |
266 | ||
267 | static void put_srq_read(struct ib_srq *srq) | |
268 | { | |
269 | put_uobj_read(srq->uobject); | |
270 | } | |
271 | ||
53d0bd1e SH |
272 | static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context, |
273 | struct ib_uobject **uobj) | |
274 | { | |
275 | *uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0); | |
276 | return *uobj ? (*uobj)->object : NULL; | |
277 | } | |
278 | ||
279 | static void put_xrcd_read(struct ib_uobject *uobj) | |
280 | { | |
281 | put_uobj_read(uobj); | |
282 | } | |
283 | ||
bc38a6ab RD |
284 | ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file, |
285 | const char __user *buf, | |
286 | int in_len, int out_len) | |
287 | { | |
288 | struct ib_uverbs_get_context cmd; | |
289 | struct ib_uverbs_get_context_resp resp; | |
290 | struct ib_udata udata; | |
291 | struct ib_device *ibdev = file->device->ib_dev; | |
882214e2 HE |
292 | #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING |
293 | struct ib_device_attr dev_attr; | |
294 | #endif | |
63c47c28 | 295 | struct ib_ucontext *ucontext; |
6b73597e | 296 | struct file *filp; |
63c47c28 | 297 | int ret; |
bc38a6ab RD |
298 | |
299 | if (out_len < sizeof resp) | |
300 | return -ENOSPC; | |
301 | ||
302 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
303 | return -EFAULT; | |
304 | ||
95ed644f | 305 | mutex_lock(&file->mutex); |
63c47c28 RD |
306 | |
307 | if (file->ucontext) { | |
308 | ret = -EINVAL; | |
309 | goto err; | |
310 | } | |
311 | ||
bc38a6ab RD |
312 | INIT_UDATA(&udata, buf + sizeof cmd, |
313 | (unsigned long) cmd.response + sizeof resp, | |
314 | in_len - sizeof cmd, out_len - sizeof resp); | |
315 | ||
63c47c28 | 316 | ucontext = ibdev->alloc_ucontext(ibdev, &udata); |
77f76013 | 317 | if (IS_ERR(ucontext)) { |
df42245a | 318 | ret = PTR_ERR(ucontext); |
77f76013 GC |
319 | goto err; |
320 | } | |
bc38a6ab | 321 | |
63c47c28 RD |
322 | ucontext->device = ibdev; |
323 | INIT_LIST_HEAD(&ucontext->pd_list); | |
324 | INIT_LIST_HEAD(&ucontext->mr_list); | |
325 | INIT_LIST_HEAD(&ucontext->mw_list); | |
326 | INIT_LIST_HEAD(&ucontext->cq_list); | |
327 | INIT_LIST_HEAD(&ucontext->qp_list); | |
328 | INIT_LIST_HEAD(&ucontext->srq_list); | |
329 | INIT_LIST_HEAD(&ucontext->ah_list); | |
53d0bd1e | 330 | INIT_LIST_HEAD(&ucontext->xrcd_list); |
436f2ad0 | 331 | INIT_LIST_HEAD(&ucontext->rule_list); |
8ada2c1c SR |
332 | rcu_read_lock(); |
333 | ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID); | |
334 | rcu_read_unlock(); | |
f7c6a7b5 | 335 | ucontext->closing = 0; |
bc38a6ab | 336 | |
882214e2 HE |
337 | #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING |
338 | ucontext->umem_tree = RB_ROOT; | |
339 | init_rwsem(&ucontext->umem_rwsem); | |
340 | ucontext->odp_mrs_count = 0; | |
341 | INIT_LIST_HEAD(&ucontext->no_private_counters); | |
342 | ||
343 | ret = ib_query_device(ibdev, &dev_attr); | |
344 | if (ret) | |
345 | goto err_free; | |
346 | if (!(dev_attr.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING)) | |
347 | ucontext->invalidate_range = NULL; | |
348 | ||
349 | #endif | |
350 | ||
6b73597e RD |
351 | resp.num_comp_vectors = file->device->num_comp_vectors; |
352 | ||
da183c7a | 353 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
354 | if (ret < 0) |
355 | goto err_free; | |
356 | resp.async_fd = ret; | |
357 | ||
358 | filp = ib_uverbs_alloc_event_file(file, 1); | |
6b73597e RD |
359 | if (IS_ERR(filp)) { |
360 | ret = PTR_ERR(filp); | |
b1e4594b | 361 | goto err_fd; |
6b73597e | 362 | } |
bc38a6ab RD |
363 | |
364 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
63c47c28 RD |
365 | &resp, sizeof resp)) { |
366 | ret = -EFAULT; | |
6b73597e | 367 | goto err_file; |
63c47c28 RD |
368 | } |
369 | ||
6b73597e RD |
370 | file->async_file = filp->private_data; |
371 | ||
372 | INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev, | |
373 | ib_uverbs_event_handler); | |
374 | ret = ib_register_event_handler(&file->event_handler); | |
375 | if (ret) | |
376 | goto err_file; | |
377 | ||
378 | kref_get(&file->async_file->ref); | |
379 | kref_get(&file->ref); | |
70a30e16 | 380 | file->ucontext = ucontext; |
6b73597e RD |
381 | |
382 | fd_install(resp.async_fd, filp); | |
383 | ||
95ed644f | 384 | mutex_unlock(&file->mutex); |
bc38a6ab RD |
385 | |
386 | return in_len; | |
387 | ||
6b73597e | 388 | err_file: |
6b73597e RD |
389 | fput(filp); |
390 | ||
b1e4594b AV |
391 | err_fd: |
392 | put_unused_fd(resp.async_fd); | |
393 | ||
63c47c28 | 394 | err_free: |
8ada2c1c | 395 | put_pid(ucontext->tgid); |
63c47c28 | 396 | ibdev->dealloc_ucontext(ucontext); |
bc38a6ab | 397 | |
63c47c28 | 398 | err: |
95ed644f | 399 | mutex_unlock(&file->mutex); |
63c47c28 | 400 | return ret; |
bc38a6ab RD |
401 | } |
402 | ||
02d1aa7a EC |
403 | static void copy_query_dev_fields(struct ib_uverbs_file *file, |
404 | struct ib_uverbs_query_device_resp *resp, | |
405 | struct ib_device_attr *attr) | |
406 | { | |
407 | resp->fw_ver = attr->fw_ver; | |
408 | resp->node_guid = file->device->ib_dev->node_guid; | |
409 | resp->sys_image_guid = attr->sys_image_guid; | |
410 | resp->max_mr_size = attr->max_mr_size; | |
411 | resp->page_size_cap = attr->page_size_cap; | |
412 | resp->vendor_id = attr->vendor_id; | |
413 | resp->vendor_part_id = attr->vendor_part_id; | |
414 | resp->hw_ver = attr->hw_ver; | |
415 | resp->max_qp = attr->max_qp; | |
416 | resp->max_qp_wr = attr->max_qp_wr; | |
417 | resp->device_cap_flags = attr->device_cap_flags; | |
418 | resp->max_sge = attr->max_sge; | |
419 | resp->max_sge_rd = attr->max_sge_rd; | |
420 | resp->max_cq = attr->max_cq; | |
421 | resp->max_cqe = attr->max_cqe; | |
422 | resp->max_mr = attr->max_mr; | |
423 | resp->max_pd = attr->max_pd; | |
424 | resp->max_qp_rd_atom = attr->max_qp_rd_atom; | |
425 | resp->max_ee_rd_atom = attr->max_ee_rd_atom; | |
426 | resp->max_res_rd_atom = attr->max_res_rd_atom; | |
427 | resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom; | |
428 | resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom; | |
429 | resp->atomic_cap = attr->atomic_cap; | |
430 | resp->max_ee = attr->max_ee; | |
431 | resp->max_rdd = attr->max_rdd; | |
432 | resp->max_mw = attr->max_mw; | |
433 | resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp; | |
434 | resp->max_raw_ethy_qp = attr->max_raw_ethy_qp; | |
435 | resp->max_mcast_grp = attr->max_mcast_grp; | |
436 | resp->max_mcast_qp_attach = attr->max_mcast_qp_attach; | |
437 | resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach; | |
438 | resp->max_ah = attr->max_ah; | |
439 | resp->max_fmr = attr->max_fmr; | |
440 | resp->max_map_per_fmr = attr->max_map_per_fmr; | |
441 | resp->max_srq = attr->max_srq; | |
442 | resp->max_srq_wr = attr->max_srq_wr; | |
443 | resp->max_srq_sge = attr->max_srq_sge; | |
444 | resp->max_pkeys = attr->max_pkeys; | |
445 | resp->local_ca_ack_delay = attr->local_ca_ack_delay; | |
446 | resp->phys_port_cnt = file->device->ib_dev->phys_port_cnt; | |
447 | } | |
448 | ||
bc38a6ab RD |
449 | ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file, |
450 | const char __user *buf, | |
451 | int in_len, int out_len) | |
452 | { | |
453 | struct ib_uverbs_query_device cmd; | |
454 | struct ib_uverbs_query_device_resp resp; | |
455 | struct ib_device_attr attr; | |
456 | int ret; | |
457 | ||
458 | if (out_len < sizeof resp) | |
459 | return -ENOSPC; | |
460 | ||
461 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
462 | return -EFAULT; | |
463 | ||
464 | ret = ib_query_device(file->device->ib_dev, &attr); | |
465 | if (ret) | |
466 | return ret; | |
467 | ||
468 | memset(&resp, 0, sizeof resp); | |
02d1aa7a | 469 | copy_query_dev_fields(file, &resp, &attr); |
bc38a6ab RD |
470 | |
471 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
472 | &resp, sizeof resp)) | |
473 | return -EFAULT; | |
474 | ||
475 | return in_len; | |
476 | } | |
477 | ||
478 | ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file, | |
479 | const char __user *buf, | |
480 | int in_len, int out_len) | |
481 | { | |
482 | struct ib_uverbs_query_port cmd; | |
483 | struct ib_uverbs_query_port_resp resp; | |
484 | struct ib_port_attr attr; | |
485 | int ret; | |
486 | ||
487 | if (out_len < sizeof resp) | |
488 | return -ENOSPC; | |
489 | ||
490 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
491 | return -EFAULT; | |
492 | ||
493 | ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr); | |
494 | if (ret) | |
495 | return ret; | |
496 | ||
497 | memset(&resp, 0, sizeof resp); | |
498 | ||
499 | resp.state = attr.state; | |
500 | resp.max_mtu = attr.max_mtu; | |
501 | resp.active_mtu = attr.active_mtu; | |
502 | resp.gid_tbl_len = attr.gid_tbl_len; | |
503 | resp.port_cap_flags = attr.port_cap_flags; | |
504 | resp.max_msg_sz = attr.max_msg_sz; | |
505 | resp.bad_pkey_cntr = attr.bad_pkey_cntr; | |
506 | resp.qkey_viol_cntr = attr.qkey_viol_cntr; | |
507 | resp.pkey_tbl_len = attr.pkey_tbl_len; | |
508 | resp.lid = attr.lid; | |
509 | resp.sm_lid = attr.sm_lid; | |
510 | resp.lmc = attr.lmc; | |
511 | resp.max_vl_num = attr.max_vl_num; | |
512 | resp.sm_sl = attr.sm_sl; | |
513 | resp.subnet_timeout = attr.subnet_timeout; | |
514 | resp.init_type_reply = attr.init_type_reply; | |
515 | resp.active_width = attr.active_width; | |
516 | resp.active_speed = attr.active_speed; | |
517 | resp.phys_state = attr.phys_state; | |
2420b60b EC |
518 | resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev, |
519 | cmd.port_num); | |
bc38a6ab RD |
520 | |
521 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
522 | &resp, sizeof resp)) | |
523 | return -EFAULT; | |
524 | ||
525 | return in_len; | |
526 | } | |
527 | ||
bc38a6ab RD |
528 | ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file, |
529 | const char __user *buf, | |
530 | int in_len, int out_len) | |
531 | { | |
532 | struct ib_uverbs_alloc_pd cmd; | |
533 | struct ib_uverbs_alloc_pd_resp resp; | |
534 | struct ib_udata udata; | |
535 | struct ib_uobject *uobj; | |
536 | struct ib_pd *pd; | |
537 | int ret; | |
538 | ||
539 | if (out_len < sizeof resp) | |
540 | return -ENOSPC; | |
541 | ||
542 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
543 | return -EFAULT; | |
544 | ||
545 | INIT_UDATA(&udata, buf + sizeof cmd, | |
546 | (unsigned long) cmd.response + sizeof resp, | |
547 | in_len - sizeof cmd, out_len - sizeof resp); | |
548 | ||
549 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
550 | if (!uobj) | |
551 | return -ENOMEM; | |
552 | ||
3bea57a5 | 553 | init_uobj(uobj, 0, file->ucontext, &pd_lock_class); |
9ead190b | 554 | down_write(&uobj->mutex); |
bc38a6ab RD |
555 | |
556 | pd = file->device->ib_dev->alloc_pd(file->device->ib_dev, | |
557 | file->ucontext, &udata); | |
558 | if (IS_ERR(pd)) { | |
559 | ret = PTR_ERR(pd); | |
560 | goto err; | |
561 | } | |
562 | ||
563 | pd->device = file->device->ib_dev; | |
564 | pd->uobject = uobj; | |
565 | atomic_set(&pd->usecnt, 0); | |
566 | ||
9ead190b RD |
567 | uobj->object = pd; |
568 | ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj); | |
bc38a6ab | 569 | if (ret) |
9ead190b | 570 | goto err_idr; |
bc38a6ab RD |
571 | |
572 | memset(&resp, 0, sizeof resp); | |
573 | resp.pd_handle = uobj->id; | |
574 | ||
575 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
576 | &resp, sizeof resp)) { | |
577 | ret = -EFAULT; | |
9ead190b | 578 | goto err_copy; |
bc38a6ab RD |
579 | } |
580 | ||
95ed644f | 581 | mutex_lock(&file->mutex); |
eb9d3cd5 | 582 | list_add_tail(&uobj->list, &file->ucontext->pd_list); |
95ed644f | 583 | mutex_unlock(&file->mutex); |
bc38a6ab | 584 | |
9ead190b RD |
585 | uobj->live = 1; |
586 | ||
587 | up_write(&uobj->mutex); | |
bc38a6ab | 588 | |
eb9d3cd5 RD |
589 | return in_len; |
590 | ||
9ead190b RD |
591 | err_copy: |
592 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); | |
eb9d3cd5 | 593 | |
9ead190b | 594 | err_idr: |
bc38a6ab RD |
595 | ib_dealloc_pd(pd); |
596 | ||
597 | err: | |
9ead190b | 598 | put_uobj_write(uobj); |
bc38a6ab RD |
599 | return ret; |
600 | } | |
601 | ||
602 | ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file, | |
603 | const char __user *buf, | |
604 | int in_len, int out_len) | |
605 | { | |
606 | struct ib_uverbs_dealloc_pd cmd; | |
bc38a6ab | 607 | struct ib_uobject *uobj; |
9ead190b | 608 | int ret; |
bc38a6ab RD |
609 | |
610 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
611 | return -EFAULT; | |
612 | ||
9ead190b RD |
613 | uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext); |
614 | if (!uobj) | |
615 | return -EINVAL; | |
bc38a6ab | 616 | |
9ead190b RD |
617 | ret = ib_dealloc_pd(uobj->object); |
618 | if (!ret) | |
619 | uobj->live = 0; | |
bc38a6ab | 620 | |
9ead190b | 621 | put_uobj_write(uobj); |
bc38a6ab | 622 | |
bc38a6ab | 623 | if (ret) |
9ead190b | 624 | return ret; |
bc38a6ab | 625 | |
9ead190b | 626 | idr_remove_uobj(&ib_uverbs_pd_idr, uobj); |
bc38a6ab | 627 | |
95ed644f | 628 | mutex_lock(&file->mutex); |
bc38a6ab | 629 | list_del(&uobj->list); |
95ed644f | 630 | mutex_unlock(&file->mutex); |
bc38a6ab | 631 | |
9ead190b | 632 | put_uobj(uobj); |
bc38a6ab | 633 | |
9ead190b | 634 | return in_len; |
bc38a6ab RD |
635 | } |
636 | ||
53d0bd1e SH |
637 | struct xrcd_table_entry { |
638 | struct rb_node node; | |
639 | struct ib_xrcd *xrcd; | |
640 | struct inode *inode; | |
641 | }; | |
642 | ||
643 | static int xrcd_table_insert(struct ib_uverbs_device *dev, | |
644 | struct inode *inode, | |
645 | struct ib_xrcd *xrcd) | |
646 | { | |
647 | struct xrcd_table_entry *entry, *scan; | |
648 | struct rb_node **p = &dev->xrcd_tree.rb_node; | |
649 | struct rb_node *parent = NULL; | |
650 | ||
651 | entry = kmalloc(sizeof *entry, GFP_KERNEL); | |
652 | if (!entry) | |
653 | return -ENOMEM; | |
654 | ||
655 | entry->xrcd = xrcd; | |
656 | entry->inode = inode; | |
657 | ||
658 | while (*p) { | |
659 | parent = *p; | |
660 | scan = rb_entry(parent, struct xrcd_table_entry, node); | |
661 | ||
662 | if (inode < scan->inode) { | |
663 | p = &(*p)->rb_left; | |
664 | } else if (inode > scan->inode) { | |
665 | p = &(*p)->rb_right; | |
666 | } else { | |
667 | kfree(entry); | |
668 | return -EEXIST; | |
669 | } | |
670 | } | |
671 | ||
672 | rb_link_node(&entry->node, parent, p); | |
673 | rb_insert_color(&entry->node, &dev->xrcd_tree); | |
674 | igrab(inode); | |
675 | return 0; | |
676 | } | |
677 | ||
678 | static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev, | |
679 | struct inode *inode) | |
680 | { | |
681 | struct xrcd_table_entry *entry; | |
682 | struct rb_node *p = dev->xrcd_tree.rb_node; | |
683 | ||
684 | while (p) { | |
685 | entry = rb_entry(p, struct xrcd_table_entry, node); | |
686 | ||
687 | if (inode < entry->inode) | |
688 | p = p->rb_left; | |
689 | else if (inode > entry->inode) | |
690 | p = p->rb_right; | |
691 | else | |
692 | return entry; | |
693 | } | |
694 | ||
695 | return NULL; | |
696 | } | |
697 | ||
698 | static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode) | |
699 | { | |
700 | struct xrcd_table_entry *entry; | |
701 | ||
702 | entry = xrcd_table_search(dev, inode); | |
703 | if (!entry) | |
704 | return NULL; | |
705 | ||
706 | return entry->xrcd; | |
707 | } | |
708 | ||
709 | static void xrcd_table_delete(struct ib_uverbs_device *dev, | |
710 | struct inode *inode) | |
711 | { | |
712 | struct xrcd_table_entry *entry; | |
713 | ||
714 | entry = xrcd_table_search(dev, inode); | |
715 | if (entry) { | |
716 | iput(inode); | |
717 | rb_erase(&entry->node, &dev->xrcd_tree); | |
718 | kfree(entry); | |
719 | } | |
720 | } | |
721 | ||
722 | ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file, | |
723 | const char __user *buf, int in_len, | |
724 | int out_len) | |
725 | { | |
726 | struct ib_uverbs_open_xrcd cmd; | |
727 | struct ib_uverbs_open_xrcd_resp resp; | |
728 | struct ib_udata udata; | |
729 | struct ib_uxrcd_object *obj; | |
730 | struct ib_xrcd *xrcd = NULL; | |
2903ff01 | 731 | struct fd f = {NULL, 0}; |
53d0bd1e | 732 | struct inode *inode = NULL; |
2903ff01 | 733 | int ret = 0; |
53d0bd1e SH |
734 | int new_xrcd = 0; |
735 | ||
736 | if (out_len < sizeof resp) | |
737 | return -ENOSPC; | |
738 | ||
739 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
740 | return -EFAULT; | |
741 | ||
742 | INIT_UDATA(&udata, buf + sizeof cmd, | |
743 | (unsigned long) cmd.response + sizeof resp, | |
744 | in_len - sizeof cmd, out_len - sizeof resp); | |
745 | ||
746 | mutex_lock(&file->device->xrcd_tree_mutex); | |
747 | ||
748 | if (cmd.fd != -1) { | |
749 | /* search for file descriptor */ | |
2903ff01 AV |
750 | f = fdget(cmd.fd); |
751 | if (!f.file) { | |
53d0bd1e SH |
752 | ret = -EBADF; |
753 | goto err_tree_mutex_unlock; | |
754 | } | |
755 | ||
496ad9aa | 756 | inode = file_inode(f.file); |
53d0bd1e SH |
757 | xrcd = find_xrcd(file->device, inode); |
758 | if (!xrcd && !(cmd.oflags & O_CREAT)) { | |
759 | /* no file descriptor. Need CREATE flag */ | |
760 | ret = -EAGAIN; | |
761 | goto err_tree_mutex_unlock; | |
762 | } | |
763 | ||
764 | if (xrcd && cmd.oflags & O_EXCL) { | |
765 | ret = -EINVAL; | |
766 | goto err_tree_mutex_unlock; | |
767 | } | |
768 | } | |
769 | ||
770 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
771 | if (!obj) { | |
772 | ret = -ENOMEM; | |
773 | goto err_tree_mutex_unlock; | |
774 | } | |
775 | ||
3bea57a5 | 776 | init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_class); |
53d0bd1e SH |
777 | |
778 | down_write(&obj->uobject.mutex); | |
779 | ||
780 | if (!xrcd) { | |
781 | xrcd = file->device->ib_dev->alloc_xrcd(file->device->ib_dev, | |
782 | file->ucontext, &udata); | |
783 | if (IS_ERR(xrcd)) { | |
784 | ret = PTR_ERR(xrcd); | |
785 | goto err; | |
786 | } | |
787 | ||
788 | xrcd->inode = inode; | |
789 | xrcd->device = file->device->ib_dev; | |
790 | atomic_set(&xrcd->usecnt, 0); | |
791 | mutex_init(&xrcd->tgt_qp_mutex); | |
792 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); | |
793 | new_xrcd = 1; | |
794 | } | |
795 | ||
796 | atomic_set(&obj->refcnt, 0); | |
797 | obj->uobject.object = xrcd; | |
798 | ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
799 | if (ret) | |
800 | goto err_idr; | |
801 | ||
802 | memset(&resp, 0, sizeof resp); | |
803 | resp.xrcd_handle = obj->uobject.id; | |
804 | ||
805 | if (inode) { | |
806 | if (new_xrcd) { | |
807 | /* create new inode/xrcd table entry */ | |
808 | ret = xrcd_table_insert(file->device, inode, xrcd); | |
809 | if (ret) | |
810 | goto err_insert_xrcd; | |
811 | } | |
812 | atomic_inc(&xrcd->usecnt); | |
813 | } | |
814 | ||
815 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
816 | &resp, sizeof resp)) { | |
817 | ret = -EFAULT; | |
818 | goto err_copy; | |
819 | } | |
820 | ||
2903ff01 AV |
821 | if (f.file) |
822 | fdput(f); | |
53d0bd1e SH |
823 | |
824 | mutex_lock(&file->mutex); | |
825 | list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list); | |
826 | mutex_unlock(&file->mutex); | |
827 | ||
828 | obj->uobject.live = 1; | |
829 | up_write(&obj->uobject.mutex); | |
830 | ||
831 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
832 | return in_len; | |
833 | ||
834 | err_copy: | |
835 | if (inode) { | |
836 | if (new_xrcd) | |
837 | xrcd_table_delete(file->device, inode); | |
838 | atomic_dec(&xrcd->usecnt); | |
839 | } | |
840 | ||
841 | err_insert_xrcd: | |
842 | idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject); | |
843 | ||
844 | err_idr: | |
845 | ib_dealloc_xrcd(xrcd); | |
846 | ||
847 | err: | |
848 | put_uobj_write(&obj->uobject); | |
849 | ||
850 | err_tree_mutex_unlock: | |
2903ff01 AV |
851 | if (f.file) |
852 | fdput(f); | |
53d0bd1e SH |
853 | |
854 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
855 | ||
856 | return ret; | |
857 | } | |
858 | ||
859 | ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file, | |
860 | const char __user *buf, int in_len, | |
861 | int out_len) | |
862 | { | |
863 | struct ib_uverbs_close_xrcd cmd; | |
864 | struct ib_uobject *uobj; | |
865 | struct ib_xrcd *xrcd = NULL; | |
866 | struct inode *inode = NULL; | |
867 | struct ib_uxrcd_object *obj; | |
868 | int live; | |
869 | int ret = 0; | |
870 | ||
871 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
872 | return -EFAULT; | |
873 | ||
874 | mutex_lock(&file->device->xrcd_tree_mutex); | |
875 | uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext); | |
876 | if (!uobj) { | |
877 | ret = -EINVAL; | |
878 | goto out; | |
879 | } | |
880 | ||
881 | xrcd = uobj->object; | |
882 | inode = xrcd->inode; | |
883 | obj = container_of(uobj, struct ib_uxrcd_object, uobject); | |
884 | if (atomic_read(&obj->refcnt)) { | |
885 | put_uobj_write(uobj); | |
886 | ret = -EBUSY; | |
887 | goto out; | |
888 | } | |
889 | ||
890 | if (!inode || atomic_dec_and_test(&xrcd->usecnt)) { | |
891 | ret = ib_dealloc_xrcd(uobj->object); | |
892 | if (!ret) | |
893 | uobj->live = 0; | |
894 | } | |
895 | ||
896 | live = uobj->live; | |
897 | if (inode && ret) | |
898 | atomic_inc(&xrcd->usecnt); | |
899 | ||
900 | put_uobj_write(uobj); | |
901 | ||
902 | if (ret) | |
903 | goto out; | |
904 | ||
905 | if (inode && !live) | |
906 | xrcd_table_delete(file->device, inode); | |
907 | ||
908 | idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj); | |
909 | mutex_lock(&file->mutex); | |
910 | list_del(&uobj->list); | |
911 | mutex_unlock(&file->mutex); | |
912 | ||
913 | put_uobj(uobj); | |
914 | ret = in_len; | |
915 | ||
916 | out: | |
917 | mutex_unlock(&file->device->xrcd_tree_mutex); | |
918 | return ret; | |
919 | } | |
920 | ||
921 | void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, | |
922 | struct ib_xrcd *xrcd) | |
923 | { | |
924 | struct inode *inode; | |
925 | ||
926 | inode = xrcd->inode; | |
927 | if (inode && !atomic_dec_and_test(&xrcd->usecnt)) | |
928 | return; | |
929 | ||
930 | ib_dealloc_xrcd(xrcd); | |
931 | ||
932 | if (inode) | |
933 | xrcd_table_delete(dev, inode); | |
934 | } | |
935 | ||
bc38a6ab RD |
936 | ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file, |
937 | const char __user *buf, int in_len, | |
938 | int out_len) | |
939 | { | |
940 | struct ib_uverbs_reg_mr cmd; | |
941 | struct ib_uverbs_reg_mr_resp resp; | |
942 | struct ib_udata udata; | |
f7c6a7b5 | 943 | struct ib_uobject *uobj; |
bc38a6ab RD |
944 | struct ib_pd *pd; |
945 | struct ib_mr *mr; | |
946 | int ret; | |
947 | ||
948 | if (out_len < sizeof resp) | |
949 | return -ENOSPC; | |
950 | ||
951 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
952 | return -EFAULT; | |
953 | ||
954 | INIT_UDATA(&udata, buf + sizeof cmd, | |
955 | (unsigned long) cmd.response + sizeof resp, | |
956 | in_len - sizeof cmd, out_len - sizeof resp); | |
957 | ||
958 | if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) | |
959 | return -EINVAL; | |
960 | ||
1c636f80 EC |
961 | ret = ib_check_mr_access(cmd.access_flags); |
962 | if (ret) | |
963 | return ret; | |
f575394f | 964 | |
f7c6a7b5 RD |
965 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); |
966 | if (!uobj) | |
bc38a6ab RD |
967 | return -ENOMEM; |
968 | ||
3bea57a5 | 969 | init_uobj(uobj, 0, file->ucontext, &mr_lock_class); |
f7c6a7b5 | 970 | down_write(&uobj->mutex); |
bc38a6ab | 971 | |
9ead190b | 972 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
aaf1aef5 RD |
973 | if (!pd) { |
974 | ret = -EINVAL; | |
f7c6a7b5 | 975 | goto err_free; |
aaf1aef5 | 976 | } |
bc38a6ab | 977 | |
860f10a7 SG |
978 | if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { |
979 | struct ib_device_attr attr; | |
980 | ||
981 | ret = ib_query_device(pd->device, &attr); | |
982 | if (ret || !(attr.device_cap_flags & | |
983 | IB_DEVICE_ON_DEMAND_PAGING)) { | |
984 | pr_debug("ODP support not available\n"); | |
985 | ret = -EINVAL; | |
986 | goto err_put; | |
987 | } | |
988 | } | |
989 | ||
f7c6a7b5 RD |
990 | mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, |
991 | cmd.access_flags, &udata); | |
bc38a6ab RD |
992 | if (IS_ERR(mr)) { |
993 | ret = PTR_ERR(mr); | |
9ead190b | 994 | goto err_put; |
bc38a6ab RD |
995 | } |
996 | ||
997 | mr->device = pd->device; | |
998 | mr->pd = pd; | |
f7c6a7b5 | 999 | mr->uobject = uobj; |
bc38a6ab RD |
1000 | atomic_inc(&pd->usecnt); |
1001 | atomic_set(&mr->usecnt, 0); | |
1002 | ||
f7c6a7b5 RD |
1003 | uobj->object = mr; |
1004 | ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj); | |
bc38a6ab RD |
1005 | if (ret) |
1006 | goto err_unreg; | |
1007 | ||
9ead190b RD |
1008 | memset(&resp, 0, sizeof resp); |
1009 | resp.lkey = mr->lkey; | |
1010 | resp.rkey = mr->rkey; | |
f7c6a7b5 | 1011 | resp.mr_handle = uobj->id; |
bc38a6ab | 1012 | |
bc38a6ab RD |
1013 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1014 | &resp, sizeof resp)) { | |
1015 | ret = -EFAULT; | |
9ead190b | 1016 | goto err_copy; |
bc38a6ab RD |
1017 | } |
1018 | ||
9ead190b RD |
1019 | put_pd_read(pd); |
1020 | ||
95ed644f | 1021 | mutex_lock(&file->mutex); |
f7c6a7b5 | 1022 | list_add_tail(&uobj->list, &file->ucontext->mr_list); |
95ed644f | 1023 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1024 | |
f7c6a7b5 | 1025 | uobj->live = 1; |
9ead190b | 1026 | |
f7c6a7b5 | 1027 | up_write(&uobj->mutex); |
bc38a6ab RD |
1028 | |
1029 | return in_len; | |
1030 | ||
9ead190b | 1031 | err_copy: |
f7c6a7b5 | 1032 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab RD |
1033 | |
1034 | err_unreg: | |
1035 | ib_dereg_mr(mr); | |
1036 | ||
9ead190b RD |
1037 | err_put: |
1038 | put_pd_read(pd); | |
bc38a6ab | 1039 | |
bc38a6ab | 1040 | err_free: |
f7c6a7b5 | 1041 | put_uobj_write(uobj); |
bc38a6ab RD |
1042 | return ret; |
1043 | } | |
1044 | ||
7e6edb9b MB |
1045 | ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file, |
1046 | const char __user *buf, int in_len, | |
1047 | int out_len) | |
1048 | { | |
1049 | struct ib_uverbs_rereg_mr cmd; | |
1050 | struct ib_uverbs_rereg_mr_resp resp; | |
1051 | struct ib_udata udata; | |
1052 | struct ib_pd *pd = NULL; | |
1053 | struct ib_mr *mr; | |
1054 | struct ib_pd *old_pd; | |
1055 | int ret; | |
1056 | struct ib_uobject *uobj; | |
1057 | ||
1058 | if (out_len < sizeof(resp)) | |
1059 | return -ENOSPC; | |
1060 | ||
1061 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1062 | return -EFAULT; | |
1063 | ||
1064 | INIT_UDATA(&udata, buf + sizeof(cmd), | |
1065 | (unsigned long) cmd.response + sizeof(resp), | |
1066 | in_len - sizeof(cmd), out_len - sizeof(resp)); | |
1067 | ||
1068 | if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) | |
1069 | return -EINVAL; | |
1070 | ||
1071 | if ((cmd.flags & IB_MR_REREG_TRANS) && | |
1072 | (!cmd.start || !cmd.hca_va || 0 >= cmd.length || | |
1073 | (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) | |
1074 | return -EINVAL; | |
1075 | ||
1076 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, | |
1077 | file->ucontext); | |
1078 | ||
1079 | if (!uobj) | |
1080 | return -EINVAL; | |
1081 | ||
1082 | mr = uobj->object; | |
1083 | ||
1084 | if (cmd.flags & IB_MR_REREG_ACCESS) { | |
1085 | ret = ib_check_mr_access(cmd.access_flags); | |
1086 | if (ret) | |
1087 | goto put_uobjs; | |
1088 | } | |
1089 | ||
1090 | if (cmd.flags & IB_MR_REREG_PD) { | |
1091 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1092 | if (!pd) { | |
1093 | ret = -EINVAL; | |
1094 | goto put_uobjs; | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | if (atomic_read(&mr->usecnt)) { | |
1099 | ret = -EBUSY; | |
1100 | goto put_uobj_pd; | |
1101 | } | |
1102 | ||
1103 | old_pd = mr->pd; | |
1104 | ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start, | |
1105 | cmd.length, cmd.hca_va, | |
1106 | cmd.access_flags, pd, &udata); | |
1107 | if (!ret) { | |
1108 | if (cmd.flags & IB_MR_REREG_PD) { | |
1109 | atomic_inc(&pd->usecnt); | |
1110 | mr->pd = pd; | |
1111 | atomic_dec(&old_pd->usecnt); | |
1112 | } | |
1113 | } else { | |
1114 | goto put_uobj_pd; | |
1115 | } | |
1116 | ||
1117 | memset(&resp, 0, sizeof(resp)); | |
1118 | resp.lkey = mr->lkey; | |
1119 | resp.rkey = mr->rkey; | |
1120 | ||
1121 | if (copy_to_user((void __user *)(unsigned long)cmd.response, | |
1122 | &resp, sizeof(resp))) | |
1123 | ret = -EFAULT; | |
1124 | else | |
1125 | ret = in_len; | |
1126 | ||
1127 | put_uobj_pd: | |
1128 | if (cmd.flags & IB_MR_REREG_PD) | |
1129 | put_pd_read(pd); | |
1130 | ||
1131 | put_uobjs: | |
1132 | ||
1133 | put_uobj_write(mr->uobject); | |
1134 | ||
1135 | return ret; | |
1136 | } | |
1137 | ||
bc38a6ab RD |
1138 | ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, |
1139 | const char __user *buf, int in_len, | |
1140 | int out_len) | |
1141 | { | |
1142 | struct ib_uverbs_dereg_mr cmd; | |
1143 | struct ib_mr *mr; | |
9ead190b | 1144 | struct ib_uobject *uobj; |
bc38a6ab RD |
1145 | int ret = -EINVAL; |
1146 | ||
1147 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1148 | return -EFAULT; | |
1149 | ||
9ead190b RD |
1150 | uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext); |
1151 | if (!uobj) | |
1152 | return -EINVAL; | |
bc38a6ab | 1153 | |
f7c6a7b5 | 1154 | mr = uobj->object; |
bc38a6ab RD |
1155 | |
1156 | ret = ib_dereg_mr(mr); | |
9ead190b RD |
1157 | if (!ret) |
1158 | uobj->live = 0; | |
1159 | ||
1160 | put_uobj_write(uobj); | |
1161 | ||
bc38a6ab | 1162 | if (ret) |
9ead190b | 1163 | return ret; |
bc38a6ab | 1164 | |
9ead190b | 1165 | idr_remove_uobj(&ib_uverbs_mr_idr, uobj); |
bc38a6ab | 1166 | |
95ed644f | 1167 | mutex_lock(&file->mutex); |
9ead190b | 1168 | list_del(&uobj->list); |
95ed644f | 1169 | mutex_unlock(&file->mutex); |
bc38a6ab | 1170 | |
9ead190b | 1171 | put_uobj(uobj); |
bc38a6ab | 1172 | |
9ead190b | 1173 | return in_len; |
bc38a6ab RD |
1174 | } |
1175 | ||
6b52a12b SM |
1176 | ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file, |
1177 | const char __user *buf, int in_len, | |
1178 | int out_len) | |
1179 | { | |
1180 | struct ib_uverbs_alloc_mw cmd; | |
1181 | struct ib_uverbs_alloc_mw_resp resp; | |
1182 | struct ib_uobject *uobj; | |
1183 | struct ib_pd *pd; | |
1184 | struct ib_mw *mw; | |
1185 | int ret; | |
1186 | ||
1187 | if (out_len < sizeof(resp)) | |
1188 | return -ENOSPC; | |
1189 | ||
1190 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1191 | return -EFAULT; | |
1192 | ||
1193 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
1194 | if (!uobj) | |
1195 | return -ENOMEM; | |
1196 | ||
1197 | init_uobj(uobj, 0, file->ucontext, &mw_lock_class); | |
1198 | down_write(&uobj->mutex); | |
1199 | ||
1200 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1201 | if (!pd) { | |
1202 | ret = -EINVAL; | |
1203 | goto err_free; | |
1204 | } | |
1205 | ||
1206 | mw = pd->device->alloc_mw(pd, cmd.mw_type); | |
1207 | if (IS_ERR(mw)) { | |
1208 | ret = PTR_ERR(mw); | |
1209 | goto err_put; | |
1210 | } | |
1211 | ||
1212 | mw->device = pd->device; | |
1213 | mw->pd = pd; | |
1214 | mw->uobject = uobj; | |
1215 | atomic_inc(&pd->usecnt); | |
1216 | ||
1217 | uobj->object = mw; | |
1218 | ret = idr_add_uobj(&ib_uverbs_mw_idr, uobj); | |
1219 | if (ret) | |
1220 | goto err_unalloc; | |
1221 | ||
1222 | memset(&resp, 0, sizeof(resp)); | |
1223 | resp.rkey = mw->rkey; | |
1224 | resp.mw_handle = uobj->id; | |
1225 | ||
1226 | if (copy_to_user((void __user *)(unsigned long)cmd.response, | |
1227 | &resp, sizeof(resp))) { | |
1228 | ret = -EFAULT; | |
1229 | goto err_copy; | |
1230 | } | |
1231 | ||
1232 | put_pd_read(pd); | |
1233 | ||
1234 | mutex_lock(&file->mutex); | |
1235 | list_add_tail(&uobj->list, &file->ucontext->mw_list); | |
1236 | mutex_unlock(&file->mutex); | |
1237 | ||
1238 | uobj->live = 1; | |
1239 | ||
1240 | up_write(&uobj->mutex); | |
1241 | ||
1242 | return in_len; | |
1243 | ||
1244 | err_copy: | |
1245 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1246 | ||
1247 | err_unalloc: | |
1248 | ib_dealloc_mw(mw); | |
1249 | ||
1250 | err_put: | |
1251 | put_pd_read(pd); | |
1252 | ||
1253 | err_free: | |
1254 | put_uobj_write(uobj); | |
1255 | return ret; | |
1256 | } | |
1257 | ||
1258 | ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file, | |
1259 | const char __user *buf, int in_len, | |
1260 | int out_len) | |
1261 | { | |
1262 | struct ib_uverbs_dealloc_mw cmd; | |
1263 | struct ib_mw *mw; | |
1264 | struct ib_uobject *uobj; | |
1265 | int ret = -EINVAL; | |
1266 | ||
1267 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1268 | return -EFAULT; | |
1269 | ||
1270 | uobj = idr_write_uobj(&ib_uverbs_mw_idr, cmd.mw_handle, file->ucontext); | |
1271 | if (!uobj) | |
1272 | return -EINVAL; | |
1273 | ||
1274 | mw = uobj->object; | |
1275 | ||
1276 | ret = ib_dealloc_mw(mw); | |
1277 | if (!ret) | |
1278 | uobj->live = 0; | |
1279 | ||
1280 | put_uobj_write(uobj); | |
1281 | ||
1282 | if (ret) | |
1283 | return ret; | |
1284 | ||
1285 | idr_remove_uobj(&ib_uverbs_mw_idr, uobj); | |
1286 | ||
1287 | mutex_lock(&file->mutex); | |
1288 | list_del(&uobj->list); | |
1289 | mutex_unlock(&file->mutex); | |
1290 | ||
1291 | put_uobj(uobj); | |
1292 | ||
1293 | return in_len; | |
1294 | } | |
1295 | ||
6b73597e RD |
1296 | ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file, |
1297 | const char __user *buf, int in_len, | |
1298 | int out_len) | |
1299 | { | |
1300 | struct ib_uverbs_create_comp_channel cmd; | |
1301 | struct ib_uverbs_create_comp_channel_resp resp; | |
1302 | struct file *filp; | |
b1e4594b | 1303 | int ret; |
6b73597e RD |
1304 | |
1305 | if (out_len < sizeof resp) | |
1306 | return -ENOSPC; | |
1307 | ||
1308 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1309 | return -EFAULT; | |
1310 | ||
da183c7a | 1311 | ret = get_unused_fd_flags(O_CLOEXEC); |
b1e4594b AV |
1312 | if (ret < 0) |
1313 | return ret; | |
1314 | resp.fd = ret; | |
1315 | ||
1316 | filp = ib_uverbs_alloc_event_file(file, 0); | |
1317 | if (IS_ERR(filp)) { | |
1318 | put_unused_fd(resp.fd); | |
6b73597e | 1319 | return PTR_ERR(filp); |
b1e4594b | 1320 | } |
6b73597e RD |
1321 | |
1322 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1323 | &resp, sizeof resp)) { | |
1324 | put_unused_fd(resp.fd); | |
1325 | fput(filp); | |
1326 | return -EFAULT; | |
1327 | } | |
1328 | ||
1329 | fd_install(resp.fd, filp); | |
1330 | return in_len; | |
1331 | } | |
1332 | ||
565197dd MB |
1333 | static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file, |
1334 | struct ib_udata *ucore, | |
1335 | struct ib_udata *uhw, | |
1336 | struct ib_uverbs_ex_create_cq *cmd, | |
1337 | size_t cmd_sz, | |
1338 | int (*cb)(struct ib_uverbs_file *file, | |
1339 | struct ib_ucq_object *obj, | |
1340 | struct ib_uverbs_ex_create_cq_resp *resp, | |
1341 | struct ib_udata *udata, | |
1342 | void *context), | |
1343 | void *context) | |
bc38a6ab | 1344 | { |
9ead190b | 1345 | struct ib_ucq_object *obj; |
6b73597e | 1346 | struct ib_uverbs_event_file *ev_file = NULL; |
bc38a6ab RD |
1347 | struct ib_cq *cq; |
1348 | int ret; | |
565197dd | 1349 | struct ib_uverbs_ex_create_cq_resp resp; |
bcf4c1ea | 1350 | struct ib_cq_init_attr attr = {}; |
bc38a6ab | 1351 | |
565197dd MB |
1352 | if (cmd->comp_vector >= file->device->num_comp_vectors) |
1353 | return ERR_PTR(-EINVAL); | |
bc38a6ab | 1354 | |
9ead190b RD |
1355 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
1356 | if (!obj) | |
565197dd | 1357 | return ERR_PTR(-ENOMEM); |
bc38a6ab | 1358 | |
565197dd | 1359 | init_uobj(&obj->uobject, cmd->user_handle, file->ucontext, &cq_lock_class); |
9ead190b RD |
1360 | down_write(&obj->uobject.mutex); |
1361 | ||
565197dd MB |
1362 | if (cmd->comp_channel >= 0) { |
1363 | ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel); | |
ac4e7b35 JM |
1364 | if (!ev_file) { |
1365 | ret = -EINVAL; | |
1366 | goto err; | |
1367 | } | |
1368 | } | |
1369 | ||
9ead190b RD |
1370 | obj->uverbs_file = file; |
1371 | obj->comp_events_reported = 0; | |
1372 | obj->async_events_reported = 0; | |
1373 | INIT_LIST_HEAD(&obj->comp_list); | |
1374 | INIT_LIST_HEAD(&obj->async_list); | |
bc38a6ab | 1375 | |
565197dd MB |
1376 | attr.cqe = cmd->cqe; |
1377 | attr.comp_vector = cmd->comp_vector; | |
1378 | ||
1379 | if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags)) | |
1380 | attr.flags = cmd->flags; | |
1381 | ||
bcf4c1ea | 1382 | cq = file->device->ib_dev->create_cq(file->device->ib_dev, &attr, |
565197dd | 1383 | file->ucontext, uhw); |
bc38a6ab RD |
1384 | if (IS_ERR(cq)) { |
1385 | ret = PTR_ERR(cq); | |
9ead190b | 1386 | goto err_file; |
bc38a6ab RD |
1387 | } |
1388 | ||
1389 | cq->device = file->device->ib_dev; | |
9ead190b | 1390 | cq->uobject = &obj->uobject; |
bc38a6ab RD |
1391 | cq->comp_handler = ib_uverbs_comp_handler; |
1392 | cq->event_handler = ib_uverbs_cq_event_handler; | |
6b73597e | 1393 | cq->cq_context = ev_file; |
bc38a6ab RD |
1394 | atomic_set(&cq->usecnt, 0); |
1395 | ||
9ead190b RD |
1396 | obj->uobject.object = cq; |
1397 | ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject); | |
bc38a6ab | 1398 | if (ret) |
9ead190b | 1399 | goto err_free; |
bc38a6ab RD |
1400 | |
1401 | memset(&resp, 0, sizeof resp); | |
565197dd MB |
1402 | resp.base.cq_handle = obj->uobject.id; |
1403 | resp.base.cqe = cq->cqe; | |
bc38a6ab | 1404 | |
565197dd MB |
1405 | resp.response_length = offsetof(typeof(resp), response_length) + |
1406 | sizeof(resp.response_length); | |
1407 | ||
1408 | ret = cb(file, obj, &resp, ucore, context); | |
1409 | if (ret) | |
1410 | goto err_cb; | |
bc38a6ab | 1411 | |
95ed644f | 1412 | mutex_lock(&file->mutex); |
9ead190b | 1413 | list_add_tail(&obj->uobject.list, &file->ucontext->cq_list); |
95ed644f | 1414 | mutex_unlock(&file->mutex); |
bc38a6ab | 1415 | |
9ead190b RD |
1416 | obj->uobject.live = 1; |
1417 | ||
1418 | up_write(&obj->uobject.mutex); | |
bc38a6ab | 1419 | |
565197dd | 1420 | return obj; |
eb9d3cd5 | 1421 | |
565197dd | 1422 | err_cb: |
9ead190b | 1423 | idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject); |
eb9d3cd5 | 1424 | |
9ead190b | 1425 | err_free: |
bc38a6ab RD |
1426 | ib_destroy_cq(cq); |
1427 | ||
9ead190b | 1428 | err_file: |
ac4e7b35 | 1429 | if (ev_file) |
9ead190b RD |
1430 | ib_uverbs_release_ucq(file, ev_file, obj); |
1431 | ||
1432 | err: | |
1433 | put_uobj_write(&obj->uobject); | |
565197dd MB |
1434 | |
1435 | return ERR_PTR(ret); | |
1436 | } | |
1437 | ||
1438 | static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file, | |
1439 | struct ib_ucq_object *obj, | |
1440 | struct ib_uverbs_ex_create_cq_resp *resp, | |
1441 | struct ib_udata *ucore, void *context) | |
1442 | { | |
1443 | if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base))) | |
1444 | return -EFAULT; | |
1445 | ||
1446 | return 0; | |
1447 | } | |
1448 | ||
1449 | ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file, | |
1450 | const char __user *buf, int in_len, | |
1451 | int out_len) | |
1452 | { | |
1453 | struct ib_uverbs_create_cq cmd; | |
1454 | struct ib_uverbs_ex_create_cq cmd_ex; | |
1455 | struct ib_uverbs_create_cq_resp resp; | |
1456 | struct ib_udata ucore; | |
1457 | struct ib_udata uhw; | |
1458 | struct ib_ucq_object *obj; | |
1459 | ||
1460 | if (out_len < sizeof(resp)) | |
1461 | return -ENOSPC; | |
1462 | ||
1463 | if (copy_from_user(&cmd, buf, sizeof(cmd))) | |
1464 | return -EFAULT; | |
1465 | ||
1466 | INIT_UDATA(&ucore, buf, cmd.response, sizeof(cmd), sizeof(resp)); | |
1467 | ||
1468 | INIT_UDATA(&uhw, buf + sizeof(cmd), | |
1469 | (unsigned long)cmd.response + sizeof(resp), | |
1470 | in_len - sizeof(cmd), out_len - sizeof(resp)); | |
1471 | ||
1472 | memset(&cmd_ex, 0, sizeof(cmd_ex)); | |
1473 | cmd_ex.user_handle = cmd.user_handle; | |
1474 | cmd_ex.cqe = cmd.cqe; | |
1475 | cmd_ex.comp_vector = cmd.comp_vector; | |
1476 | cmd_ex.comp_channel = cmd.comp_channel; | |
1477 | ||
1478 | obj = create_cq(file, &ucore, &uhw, &cmd_ex, | |
1479 | offsetof(typeof(cmd_ex), comp_channel) + | |
1480 | sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb, | |
1481 | NULL); | |
1482 | ||
1483 | if (IS_ERR(obj)) | |
1484 | return PTR_ERR(obj); | |
1485 | ||
1486 | return in_len; | |
1487 | } | |
1488 | ||
1489 | static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file, | |
1490 | struct ib_ucq_object *obj, | |
1491 | struct ib_uverbs_ex_create_cq_resp *resp, | |
1492 | struct ib_udata *ucore, void *context) | |
1493 | { | |
1494 | if (ib_copy_to_udata(ucore, resp, resp->response_length)) | |
1495 | return -EFAULT; | |
1496 | ||
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file, | |
1501 | struct ib_udata *ucore, | |
1502 | struct ib_udata *uhw) | |
1503 | { | |
1504 | struct ib_uverbs_ex_create_cq_resp resp; | |
1505 | struct ib_uverbs_ex_create_cq cmd; | |
1506 | struct ib_ucq_object *obj; | |
1507 | int err; | |
1508 | ||
1509 | if (ucore->inlen < sizeof(cmd)) | |
1510 | return -EINVAL; | |
1511 | ||
1512 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); | |
1513 | if (err) | |
1514 | return err; | |
1515 | ||
1516 | if (cmd.comp_mask) | |
1517 | return -EINVAL; | |
1518 | ||
1519 | if (cmd.reserved) | |
1520 | return -EINVAL; | |
1521 | ||
1522 | if (ucore->outlen < (offsetof(typeof(resp), response_length) + | |
1523 | sizeof(resp.response_length))) | |
1524 | return -ENOSPC; | |
1525 | ||
1526 | obj = create_cq(file, ucore, uhw, &cmd, | |
1527 | min(ucore->inlen, sizeof(cmd)), | |
1528 | ib_uverbs_ex_create_cq_cb, NULL); | |
1529 | ||
1530 | if (IS_ERR(obj)) | |
1531 | return PTR_ERR(obj); | |
1532 | ||
1533 | return 0; | |
bc38a6ab RD |
1534 | } |
1535 | ||
33b9b3ee RD |
1536 | ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, |
1537 | const char __user *buf, int in_len, | |
1538 | int out_len) | |
1539 | { | |
1540 | struct ib_uverbs_resize_cq cmd; | |
1541 | struct ib_uverbs_resize_cq_resp resp; | |
1542 | struct ib_udata udata; | |
1543 | struct ib_cq *cq; | |
1544 | int ret = -EINVAL; | |
1545 | ||
1546 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1547 | return -EFAULT; | |
1548 | ||
1549 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1550 | (unsigned long) cmd.response + sizeof resp, | |
1551 | in_len - sizeof cmd, out_len - sizeof resp); | |
1552 | ||
1ccf6aa1 | 1553 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
9ead190b RD |
1554 | if (!cq) |
1555 | return -EINVAL; | |
33b9b3ee RD |
1556 | |
1557 | ret = cq->device->resize_cq(cq, cmd.cqe, &udata); | |
1558 | if (ret) | |
1559 | goto out; | |
1560 | ||
33b9b3ee RD |
1561 | resp.cqe = cq->cqe; |
1562 | ||
1563 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
64f817ba | 1564 | &resp, sizeof resp.cqe)) |
33b9b3ee RD |
1565 | ret = -EFAULT; |
1566 | ||
1567 | out: | |
9ead190b | 1568 | put_cq_read(cq); |
33b9b3ee RD |
1569 | |
1570 | return ret ? ret : in_len; | |
1571 | } | |
1572 | ||
7182afea DC |
1573 | static int copy_wc_to_user(void __user *dest, struct ib_wc *wc) |
1574 | { | |
1575 | struct ib_uverbs_wc tmp; | |
1576 | ||
1577 | tmp.wr_id = wc->wr_id; | |
1578 | tmp.status = wc->status; | |
1579 | tmp.opcode = wc->opcode; | |
1580 | tmp.vendor_err = wc->vendor_err; | |
1581 | tmp.byte_len = wc->byte_len; | |
1582 | tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data; | |
1583 | tmp.qp_num = wc->qp->qp_num; | |
1584 | tmp.src_qp = wc->src_qp; | |
1585 | tmp.wc_flags = wc->wc_flags; | |
1586 | tmp.pkey_index = wc->pkey_index; | |
1587 | tmp.slid = wc->slid; | |
1588 | tmp.sl = wc->sl; | |
1589 | tmp.dlid_path_bits = wc->dlid_path_bits; | |
1590 | tmp.port_num = wc->port_num; | |
1591 | tmp.reserved = 0; | |
1592 | ||
1593 | if (copy_to_user(dest, &tmp, sizeof tmp)) | |
1594 | return -EFAULT; | |
1595 | ||
1596 | return 0; | |
1597 | } | |
1598 | ||
67cdb40c RD |
1599 | ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file, |
1600 | const char __user *buf, int in_len, | |
1601 | int out_len) | |
1602 | { | |
1603 | struct ib_uverbs_poll_cq cmd; | |
7182afea DC |
1604 | struct ib_uverbs_poll_cq_resp resp; |
1605 | u8 __user *header_ptr; | |
1606 | u8 __user *data_ptr; | |
67cdb40c | 1607 | struct ib_cq *cq; |
7182afea DC |
1608 | struct ib_wc wc; |
1609 | int ret; | |
67cdb40c RD |
1610 | |
1611 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1612 | return -EFAULT; | |
1613 | ||
1ccf6aa1 | 1614 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
7182afea DC |
1615 | if (!cq) |
1616 | return -EINVAL; | |
67cdb40c | 1617 | |
7182afea DC |
1618 | /* we copy a struct ib_uverbs_poll_cq_resp to user space */ |
1619 | header_ptr = (void __user *)(unsigned long) cmd.response; | |
1620 | data_ptr = header_ptr + sizeof resp; | |
9ead190b | 1621 | |
7182afea DC |
1622 | memset(&resp, 0, sizeof resp); |
1623 | while (resp.count < cmd.ne) { | |
1624 | ret = ib_poll_cq(cq, 1, &wc); | |
1625 | if (ret < 0) | |
1626 | goto out_put; | |
1627 | if (!ret) | |
1628 | break; | |
1629 | ||
1630 | ret = copy_wc_to_user(data_ptr, &wc); | |
1631 | if (ret) | |
1632 | goto out_put; | |
1633 | ||
1634 | data_ptr += sizeof(struct ib_uverbs_wc); | |
1635 | ++resp.count; | |
67cdb40c RD |
1636 | } |
1637 | ||
7182afea | 1638 | if (copy_to_user(header_ptr, &resp, sizeof resp)) { |
67cdb40c | 1639 | ret = -EFAULT; |
7182afea DC |
1640 | goto out_put; |
1641 | } | |
67cdb40c | 1642 | |
7182afea | 1643 | ret = in_len; |
67cdb40c | 1644 | |
7182afea DC |
1645 | out_put: |
1646 | put_cq_read(cq); | |
1647 | return ret; | |
67cdb40c RD |
1648 | } |
1649 | ||
1650 | ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file, | |
1651 | const char __user *buf, int in_len, | |
1652 | int out_len) | |
1653 | { | |
1654 | struct ib_uverbs_req_notify_cq cmd; | |
1655 | struct ib_cq *cq; | |
67cdb40c RD |
1656 | |
1657 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1658 | return -EFAULT; | |
1659 | ||
1ccf6aa1 | 1660 | cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0); |
ab108676 | 1661 | if (!cq) |
9ead190b | 1662 | return -EINVAL; |
67cdb40c | 1663 | |
9ead190b RD |
1664 | ib_req_notify_cq(cq, cmd.solicited_only ? |
1665 | IB_CQ_SOLICITED : IB_CQ_NEXT_COMP); | |
1666 | ||
ab108676 | 1667 | put_cq_read(cq); |
9ead190b RD |
1668 | |
1669 | return in_len; | |
67cdb40c RD |
1670 | } |
1671 | ||
bc38a6ab RD |
1672 | ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file, |
1673 | const char __user *buf, int in_len, | |
1674 | int out_len) | |
1675 | { | |
63aaf647 RD |
1676 | struct ib_uverbs_destroy_cq cmd; |
1677 | struct ib_uverbs_destroy_cq_resp resp; | |
9ead190b | 1678 | struct ib_uobject *uobj; |
63aaf647 | 1679 | struct ib_cq *cq; |
9ead190b | 1680 | struct ib_ucq_object *obj; |
6b73597e | 1681 | struct ib_uverbs_event_file *ev_file; |
63aaf647 | 1682 | int ret = -EINVAL; |
bc38a6ab RD |
1683 | |
1684 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1685 | return -EFAULT; | |
1686 | ||
9ead190b RD |
1687 | uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext); |
1688 | if (!uobj) | |
1689 | return -EINVAL; | |
1690 | cq = uobj->object; | |
1691 | ev_file = cq->cq_context; | |
1692 | obj = container_of(cq->uobject, struct ib_ucq_object, uobject); | |
bc38a6ab | 1693 | |
9ead190b RD |
1694 | ret = ib_destroy_cq(cq); |
1695 | if (!ret) | |
1696 | uobj->live = 0; | |
bc38a6ab | 1697 | |
9ead190b | 1698 | put_uobj_write(uobj); |
bc38a6ab | 1699 | |
bc38a6ab | 1700 | if (ret) |
9ead190b | 1701 | return ret; |
bc38a6ab | 1702 | |
9ead190b | 1703 | idr_remove_uobj(&ib_uverbs_cq_idr, uobj); |
bc38a6ab | 1704 | |
95ed644f | 1705 | mutex_lock(&file->mutex); |
9ead190b | 1706 | list_del(&uobj->list); |
95ed644f | 1707 | mutex_unlock(&file->mutex); |
bc38a6ab | 1708 | |
9ead190b | 1709 | ib_uverbs_release_ucq(file, ev_file, obj); |
63aaf647 | 1710 | |
9ead190b RD |
1711 | memset(&resp, 0, sizeof resp); |
1712 | resp.comp_events_reported = obj->comp_events_reported; | |
1713 | resp.async_events_reported = obj->async_events_reported; | |
63aaf647 | 1714 | |
9ead190b | 1715 | put_uobj(uobj); |
bc38a6ab | 1716 | |
63aaf647 RD |
1717 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1718 | &resp, sizeof resp)) | |
9ead190b | 1719 | return -EFAULT; |
bc38a6ab | 1720 | |
9ead190b | 1721 | return in_len; |
bc38a6ab RD |
1722 | } |
1723 | ||
1724 | ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file, | |
1725 | const char __user *buf, int in_len, | |
1726 | int out_len) | |
1727 | { | |
1728 | struct ib_uverbs_create_qp cmd; | |
1729 | struct ib_uverbs_create_qp_resp resp; | |
1730 | struct ib_udata udata; | |
9ead190b | 1731 | struct ib_uqp_object *obj; |
b93f3c18 SH |
1732 | struct ib_device *device; |
1733 | struct ib_pd *pd = NULL; | |
1734 | struct ib_xrcd *xrcd = NULL; | |
1735 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1736 | struct ib_cq *scq = NULL, *rcq = NULL; | |
9977f4f6 | 1737 | struct ib_srq *srq = NULL; |
bc38a6ab RD |
1738 | struct ib_qp *qp; |
1739 | struct ib_qp_init_attr attr; | |
1740 | int ret; | |
1741 | ||
1742 | if (out_len < sizeof resp) | |
1743 | return -ENOSPC; | |
1744 | ||
1745 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1746 | return -EFAULT; | |
1747 | ||
c938a616 OG |
1748 | if (cmd.qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) |
1749 | return -EPERM; | |
1750 | ||
bc38a6ab RD |
1751 | INIT_UDATA(&udata, buf + sizeof cmd, |
1752 | (unsigned long) cmd.response + sizeof resp, | |
1753 | in_len - sizeof cmd, out_len - sizeof resp); | |
1754 | ||
846be90d | 1755 | obj = kzalloc(sizeof *obj, GFP_KERNEL); |
9ead190b | 1756 | if (!obj) |
bc38a6ab RD |
1757 | return -ENOMEM; |
1758 | ||
3bea57a5 | 1759 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
9ead190b | 1760 | down_write(&obj->uevent.uobject.mutex); |
bc38a6ab | 1761 | |
b93f3c18 SH |
1762 | if (cmd.qp_type == IB_QPT_XRC_TGT) { |
1763 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
1764 | if (!xrcd) { | |
1765 | ret = -EINVAL; | |
1766 | goto err_put; | |
1767 | } | |
1768 | device = xrcd->device; | |
9977f4f6 | 1769 | } else { |
b93f3c18 SH |
1770 | if (cmd.qp_type == IB_QPT_XRC_INI) { |
1771 | cmd.max_recv_wr = cmd.max_recv_sge = 0; | |
1772 | } else { | |
1773 | if (cmd.is_srq) { | |
1774 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); | |
1775 | if (!srq || srq->srq_type != IB_SRQT_BASIC) { | |
1776 | ret = -EINVAL; | |
1777 | goto err_put; | |
1778 | } | |
1779 | } | |
5909ce54 RD |
1780 | |
1781 | if (cmd.recv_cq_handle != cmd.send_cq_handle) { | |
1782 | rcq = idr_read_cq(cmd.recv_cq_handle, file->ucontext, 0); | |
1783 | if (!rcq) { | |
1784 | ret = -EINVAL; | |
1785 | goto err_put; | |
1786 | } | |
9977f4f6 SH |
1787 | } |
1788 | } | |
5909ce54 RD |
1789 | |
1790 | scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, !!rcq); | |
1791 | rcq = rcq ?: scq; | |
1792 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); | |
1793 | if (!pd || !scq) { | |
1794 | ret = -EINVAL; | |
1795 | goto err_put; | |
1796 | } | |
1797 | ||
b93f3c18 | 1798 | device = pd->device; |
9977f4f6 SH |
1799 | } |
1800 | ||
bc38a6ab RD |
1801 | attr.event_handler = ib_uverbs_qp_event_handler; |
1802 | attr.qp_context = file; | |
1803 | attr.send_cq = scq; | |
1804 | attr.recv_cq = rcq; | |
f520ba5a | 1805 | attr.srq = srq; |
b93f3c18 | 1806 | attr.xrcd = xrcd; |
bc38a6ab RD |
1807 | attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; |
1808 | attr.qp_type = cmd.qp_type; | |
b846f25a | 1809 | attr.create_flags = 0; |
bc38a6ab RD |
1810 | |
1811 | attr.cap.max_send_wr = cmd.max_send_wr; | |
1812 | attr.cap.max_recv_wr = cmd.max_recv_wr; | |
1813 | attr.cap.max_send_sge = cmd.max_send_sge; | |
1814 | attr.cap.max_recv_sge = cmd.max_recv_sge; | |
1815 | attr.cap.max_inline_data = cmd.max_inline_data; | |
1816 | ||
9ead190b RD |
1817 | obj->uevent.events_reported = 0; |
1818 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1819 | INIT_LIST_HEAD(&obj->mcast_list); | |
bc38a6ab | 1820 | |
b93f3c18 SH |
1821 | if (cmd.qp_type == IB_QPT_XRC_TGT) |
1822 | qp = ib_create_qp(pd, &attr); | |
1823 | else | |
1824 | qp = device->create_qp(pd, &attr, &udata); | |
1825 | ||
bc38a6ab RD |
1826 | if (IS_ERR(qp)) { |
1827 | ret = PTR_ERR(qp); | |
9ead190b | 1828 | goto err_put; |
bc38a6ab RD |
1829 | } |
1830 | ||
b93f3c18 | 1831 | if (cmd.qp_type != IB_QPT_XRC_TGT) { |
0e0ec7e0 | 1832 | qp->real_qp = qp; |
b93f3c18 SH |
1833 | qp->device = device; |
1834 | qp->pd = pd; | |
1835 | qp->send_cq = attr.send_cq; | |
1836 | qp->recv_cq = attr.recv_cq; | |
1837 | qp->srq = attr.srq; | |
1838 | qp->event_handler = attr.event_handler; | |
1839 | qp->qp_context = attr.qp_context; | |
1840 | qp->qp_type = attr.qp_type; | |
e47e321a | 1841 | atomic_set(&qp->usecnt, 0); |
b93f3c18 SH |
1842 | atomic_inc(&pd->usecnt); |
1843 | atomic_inc(&attr.send_cq->usecnt); | |
1844 | if (attr.recv_cq) | |
1845 | atomic_inc(&attr.recv_cq->usecnt); | |
1846 | if (attr.srq) | |
1847 | atomic_inc(&attr.srq->usecnt); | |
1848 | } | |
1849 | qp->uobject = &obj->uevent.uobject; | |
bc38a6ab | 1850 | |
9ead190b RD |
1851 | obj->uevent.uobject.object = qp; |
1852 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1853 | if (ret) |
1854 | goto err_destroy; | |
1855 | ||
9ead190b RD |
1856 | memset(&resp, 0, sizeof resp); |
1857 | resp.qpn = qp->qp_num; | |
1858 | resp.qp_handle = obj->uevent.uobject.id; | |
77369ed3 JM |
1859 | resp.max_recv_sge = attr.cap.max_recv_sge; |
1860 | resp.max_send_sge = attr.cap.max_send_sge; | |
1861 | resp.max_recv_wr = attr.cap.max_recv_wr; | |
1862 | resp.max_send_wr = attr.cap.max_send_wr; | |
1863 | resp.max_inline_data = attr.cap.max_inline_data; | |
bc38a6ab | 1864 | |
bc38a6ab RD |
1865 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
1866 | &resp, sizeof resp)) { | |
1867 | ret = -EFAULT; | |
9ead190b | 1868 | goto err_copy; |
bc38a6ab RD |
1869 | } |
1870 | ||
846be90d YH |
1871 | if (xrcd) { |
1872 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, | |
1873 | uobject); | |
1874 | atomic_inc(&obj->uxrcd->refcnt); | |
b93f3c18 | 1875 | put_xrcd_read(xrcd_uobj); |
846be90d YH |
1876 | } |
1877 | ||
b93f3c18 SH |
1878 | if (pd) |
1879 | put_pd_read(pd); | |
1880 | if (scq) | |
1881 | put_cq_read(scq); | |
9977f4f6 | 1882 | if (rcq && rcq != scq) |
43db2bc0 | 1883 | put_cq_read(rcq); |
9ead190b RD |
1884 | if (srq) |
1885 | put_srq_read(srq); | |
1886 | ||
95ed644f | 1887 | mutex_lock(&file->mutex); |
9ead190b | 1888 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); |
95ed644f | 1889 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 1890 | |
9ead190b RD |
1891 | obj->uevent.uobject.live = 1; |
1892 | ||
1893 | up_write(&obj->uevent.uobject.mutex); | |
bc38a6ab RD |
1894 | |
1895 | return in_len; | |
1896 | ||
9ead190b RD |
1897 | err_copy: |
1898 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
bc38a6ab RD |
1899 | |
1900 | err_destroy: | |
1901 | ib_destroy_qp(qp); | |
1902 | ||
9ead190b | 1903 | err_put: |
b93f3c18 SH |
1904 | if (xrcd) |
1905 | put_xrcd_read(xrcd_uobj); | |
9ead190b RD |
1906 | if (pd) |
1907 | put_pd_read(pd); | |
1908 | if (scq) | |
1909 | put_cq_read(scq); | |
43db2bc0 | 1910 | if (rcq && rcq != scq) |
9ead190b RD |
1911 | put_cq_read(rcq); |
1912 | if (srq) | |
1913 | put_srq_read(srq); | |
1914 | ||
1915 | put_uobj_write(&obj->uevent.uobject); | |
bc38a6ab RD |
1916 | return ret; |
1917 | } | |
1918 | ||
42849b26 SH |
1919 | ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file, |
1920 | const char __user *buf, int in_len, int out_len) | |
1921 | { | |
1922 | struct ib_uverbs_open_qp cmd; | |
1923 | struct ib_uverbs_create_qp_resp resp; | |
1924 | struct ib_udata udata; | |
1925 | struct ib_uqp_object *obj; | |
1926 | struct ib_xrcd *xrcd; | |
1927 | struct ib_uobject *uninitialized_var(xrcd_uobj); | |
1928 | struct ib_qp *qp; | |
1929 | struct ib_qp_open_attr attr; | |
1930 | int ret; | |
1931 | ||
1932 | if (out_len < sizeof resp) | |
1933 | return -ENOSPC; | |
1934 | ||
1935 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
1936 | return -EFAULT; | |
1937 | ||
1938 | INIT_UDATA(&udata, buf + sizeof cmd, | |
1939 | (unsigned long) cmd.response + sizeof resp, | |
1940 | in_len - sizeof cmd, out_len - sizeof resp); | |
1941 | ||
1942 | obj = kmalloc(sizeof *obj, GFP_KERNEL); | |
1943 | if (!obj) | |
1944 | return -ENOMEM; | |
1945 | ||
3bea57a5 | 1946 | init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class); |
42849b26 SH |
1947 | down_write(&obj->uevent.uobject.mutex); |
1948 | ||
1949 | xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj); | |
1950 | if (!xrcd) { | |
1951 | ret = -EINVAL; | |
1952 | goto err_put; | |
1953 | } | |
1954 | ||
1955 | attr.event_handler = ib_uverbs_qp_event_handler; | |
1956 | attr.qp_context = file; | |
1957 | attr.qp_num = cmd.qpn; | |
1958 | attr.qp_type = cmd.qp_type; | |
1959 | ||
1960 | obj->uevent.events_reported = 0; | |
1961 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
1962 | INIT_LIST_HEAD(&obj->mcast_list); | |
1963 | ||
1964 | qp = ib_open_qp(xrcd, &attr); | |
1965 | if (IS_ERR(qp)) { | |
1966 | ret = PTR_ERR(qp); | |
1967 | goto err_put; | |
1968 | } | |
1969 | ||
1970 | qp->uobject = &obj->uevent.uobject; | |
1971 | ||
1972 | obj->uevent.uobject.object = qp; | |
1973 | ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
1974 | if (ret) | |
1975 | goto err_destroy; | |
1976 | ||
1977 | memset(&resp, 0, sizeof resp); | |
1978 | resp.qpn = qp->qp_num; | |
1979 | resp.qp_handle = obj->uevent.uobject.id; | |
1980 | ||
1981 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
1982 | &resp, sizeof resp)) { | |
1983 | ret = -EFAULT; | |
1984 | goto err_remove; | |
1985 | } | |
1986 | ||
846be90d YH |
1987 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); |
1988 | atomic_inc(&obj->uxrcd->refcnt); | |
42849b26 SH |
1989 | put_xrcd_read(xrcd_uobj); |
1990 | ||
1991 | mutex_lock(&file->mutex); | |
1992 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list); | |
1993 | mutex_unlock(&file->mutex); | |
1994 | ||
1995 | obj->uevent.uobject.live = 1; | |
1996 | ||
1997 | up_write(&obj->uevent.uobject.mutex); | |
1998 | ||
1999 | return in_len; | |
2000 | ||
2001 | err_remove: | |
2002 | idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject); | |
2003 | ||
2004 | err_destroy: | |
2005 | ib_destroy_qp(qp); | |
2006 | ||
2007 | err_put: | |
2008 | put_xrcd_read(xrcd_uobj); | |
2009 | put_uobj_write(&obj->uevent.uobject); | |
2010 | return ret; | |
2011 | } | |
2012 | ||
7ccc9a24 DB |
2013 | ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file, |
2014 | const char __user *buf, int in_len, | |
2015 | int out_len) | |
2016 | { | |
2017 | struct ib_uverbs_query_qp cmd; | |
2018 | struct ib_uverbs_query_qp_resp resp; | |
2019 | struct ib_qp *qp; | |
2020 | struct ib_qp_attr *attr; | |
2021 | struct ib_qp_init_attr *init_attr; | |
2022 | int ret; | |
2023 | ||
2024 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2025 | return -EFAULT; | |
2026 | ||
2027 | attr = kmalloc(sizeof *attr, GFP_KERNEL); | |
2028 | init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL); | |
2029 | if (!attr || !init_attr) { | |
2030 | ret = -ENOMEM; | |
2031 | goto out; | |
2032 | } | |
2033 | ||
9ead190b RD |
2034 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2035 | if (!qp) { | |
7ccc9a24 | 2036 | ret = -EINVAL; |
9ead190b RD |
2037 | goto out; |
2038 | } | |
2039 | ||
2040 | ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr); | |
7ccc9a24 | 2041 | |
9ead190b | 2042 | put_qp_read(qp); |
7ccc9a24 DB |
2043 | |
2044 | if (ret) | |
2045 | goto out; | |
2046 | ||
2047 | memset(&resp, 0, sizeof resp); | |
2048 | ||
2049 | resp.qp_state = attr->qp_state; | |
2050 | resp.cur_qp_state = attr->cur_qp_state; | |
2051 | resp.path_mtu = attr->path_mtu; | |
2052 | resp.path_mig_state = attr->path_mig_state; | |
2053 | resp.qkey = attr->qkey; | |
2054 | resp.rq_psn = attr->rq_psn; | |
2055 | resp.sq_psn = attr->sq_psn; | |
2056 | resp.dest_qp_num = attr->dest_qp_num; | |
2057 | resp.qp_access_flags = attr->qp_access_flags; | |
2058 | resp.pkey_index = attr->pkey_index; | |
2059 | resp.alt_pkey_index = attr->alt_pkey_index; | |
0b26c88f | 2060 | resp.sq_draining = attr->sq_draining; |
7ccc9a24 DB |
2061 | resp.max_rd_atomic = attr->max_rd_atomic; |
2062 | resp.max_dest_rd_atomic = attr->max_dest_rd_atomic; | |
2063 | resp.min_rnr_timer = attr->min_rnr_timer; | |
2064 | resp.port_num = attr->port_num; | |
2065 | resp.timeout = attr->timeout; | |
2066 | resp.retry_cnt = attr->retry_cnt; | |
2067 | resp.rnr_retry = attr->rnr_retry; | |
2068 | resp.alt_port_num = attr->alt_port_num; | |
2069 | resp.alt_timeout = attr->alt_timeout; | |
2070 | ||
2071 | memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16); | |
2072 | resp.dest.flow_label = attr->ah_attr.grh.flow_label; | |
2073 | resp.dest.sgid_index = attr->ah_attr.grh.sgid_index; | |
2074 | resp.dest.hop_limit = attr->ah_attr.grh.hop_limit; | |
2075 | resp.dest.traffic_class = attr->ah_attr.grh.traffic_class; | |
2076 | resp.dest.dlid = attr->ah_attr.dlid; | |
2077 | resp.dest.sl = attr->ah_attr.sl; | |
2078 | resp.dest.src_path_bits = attr->ah_attr.src_path_bits; | |
2079 | resp.dest.static_rate = attr->ah_attr.static_rate; | |
2080 | resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH); | |
2081 | resp.dest.port_num = attr->ah_attr.port_num; | |
2082 | ||
2083 | memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16); | |
2084 | resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label; | |
2085 | resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index; | |
2086 | resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit; | |
2087 | resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class; | |
2088 | resp.alt_dest.dlid = attr->alt_ah_attr.dlid; | |
2089 | resp.alt_dest.sl = attr->alt_ah_attr.sl; | |
2090 | resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits; | |
2091 | resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate; | |
2092 | resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH); | |
2093 | resp.alt_dest.port_num = attr->alt_ah_attr.port_num; | |
2094 | ||
2095 | resp.max_send_wr = init_attr->cap.max_send_wr; | |
2096 | resp.max_recv_wr = init_attr->cap.max_recv_wr; | |
2097 | resp.max_send_sge = init_attr->cap.max_send_sge; | |
2098 | resp.max_recv_sge = init_attr->cap.max_recv_sge; | |
2099 | resp.max_inline_data = init_attr->cap.max_inline_data; | |
27d56300 | 2100 | resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR; |
7ccc9a24 DB |
2101 | |
2102 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2103 | &resp, sizeof resp)) | |
2104 | ret = -EFAULT; | |
2105 | ||
2106 | out: | |
2107 | kfree(attr); | |
2108 | kfree(init_attr); | |
2109 | ||
2110 | return ret ? ret : in_len; | |
2111 | } | |
2112 | ||
9977f4f6 SH |
2113 | /* Remove ignored fields set in the attribute mask */ |
2114 | static int modify_qp_mask(enum ib_qp_type qp_type, int mask) | |
2115 | { | |
2116 | switch (qp_type) { | |
2117 | case IB_QPT_XRC_INI: | |
2118 | return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER); | |
b93f3c18 SH |
2119 | case IB_QPT_XRC_TGT: |
2120 | return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT | | |
2121 | IB_QP_RNR_RETRY); | |
9977f4f6 SH |
2122 | default: |
2123 | return mask; | |
2124 | } | |
2125 | } | |
2126 | ||
bc38a6ab RD |
2127 | ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file, |
2128 | const char __user *buf, int in_len, | |
2129 | int out_len) | |
2130 | { | |
2131 | struct ib_uverbs_modify_qp cmd; | |
9bc57e2d | 2132 | struct ib_udata udata; |
bc38a6ab RD |
2133 | struct ib_qp *qp; |
2134 | struct ib_qp_attr *attr; | |
2135 | int ret; | |
2136 | ||
2137 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2138 | return -EFAULT; | |
2139 | ||
9bc57e2d RC |
2140 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
2141 | out_len); | |
2142 | ||
bc38a6ab RD |
2143 | attr = kmalloc(sizeof *attr, GFP_KERNEL); |
2144 | if (!attr) | |
2145 | return -ENOMEM; | |
2146 | ||
9ead190b RD |
2147 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2148 | if (!qp) { | |
bc38a6ab RD |
2149 | ret = -EINVAL; |
2150 | goto out; | |
2151 | } | |
2152 | ||
2153 | attr->qp_state = cmd.qp_state; | |
2154 | attr->cur_qp_state = cmd.cur_qp_state; | |
2155 | attr->path_mtu = cmd.path_mtu; | |
2156 | attr->path_mig_state = cmd.path_mig_state; | |
2157 | attr->qkey = cmd.qkey; | |
2158 | attr->rq_psn = cmd.rq_psn; | |
2159 | attr->sq_psn = cmd.sq_psn; | |
2160 | attr->dest_qp_num = cmd.dest_qp_num; | |
2161 | attr->qp_access_flags = cmd.qp_access_flags; | |
2162 | attr->pkey_index = cmd.pkey_index; | |
702b2aac | 2163 | attr->alt_pkey_index = cmd.alt_pkey_index; |
bc38a6ab RD |
2164 | attr->en_sqd_async_notify = cmd.en_sqd_async_notify; |
2165 | attr->max_rd_atomic = cmd.max_rd_atomic; | |
2166 | attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic; | |
2167 | attr->min_rnr_timer = cmd.min_rnr_timer; | |
2168 | attr->port_num = cmd.port_num; | |
2169 | attr->timeout = cmd.timeout; | |
2170 | attr->retry_cnt = cmd.retry_cnt; | |
2171 | attr->rnr_retry = cmd.rnr_retry; | |
2172 | attr->alt_port_num = cmd.alt_port_num; | |
2173 | attr->alt_timeout = cmd.alt_timeout; | |
2174 | ||
2175 | memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16); | |
2176 | attr->ah_attr.grh.flow_label = cmd.dest.flow_label; | |
2177 | attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index; | |
2178 | attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit; | |
2179 | attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class; | |
2180 | attr->ah_attr.dlid = cmd.dest.dlid; | |
2181 | attr->ah_attr.sl = cmd.dest.sl; | |
2182 | attr->ah_attr.src_path_bits = cmd.dest.src_path_bits; | |
2183 | attr->ah_attr.static_rate = cmd.dest.static_rate; | |
2184 | attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0; | |
2185 | attr->ah_attr.port_num = cmd.dest.port_num; | |
2186 | ||
2187 | memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16); | |
2188 | attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label; | |
2189 | attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index; | |
2190 | attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit; | |
2191 | attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class; | |
2192 | attr->alt_ah_attr.dlid = cmd.alt_dest.dlid; | |
2193 | attr->alt_ah_attr.sl = cmd.alt_dest.sl; | |
2194 | attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits; | |
2195 | attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate; | |
2196 | attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0; | |
2197 | attr->alt_ah_attr.port_num = cmd.alt_dest.port_num; | |
2198 | ||
0e0ec7e0 | 2199 | if (qp->real_qp == qp) { |
ed4c54e5 OG |
2200 | ret = ib_resolve_eth_l2_attrs(qp, attr, &cmd.attr_mask); |
2201 | if (ret) | |
0fb8bcf0 | 2202 | goto release_qp; |
0e0ec7e0 SH |
2203 | ret = qp->device->modify_qp(qp, attr, |
2204 | modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata); | |
2205 | } else { | |
2206 | ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask)); | |
2207 | } | |
9ead190b | 2208 | |
bc38a6ab | 2209 | if (ret) |
0fb8bcf0 | 2210 | goto release_qp; |
bc38a6ab RD |
2211 | |
2212 | ret = in_len; | |
2213 | ||
0fb8bcf0 ML |
2214 | release_qp: |
2215 | put_qp_read(qp); | |
2216 | ||
bc38a6ab | 2217 | out: |
bc38a6ab RD |
2218 | kfree(attr); |
2219 | ||
2220 | return ret; | |
2221 | } | |
2222 | ||
2223 | ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file, | |
2224 | const char __user *buf, int in_len, | |
2225 | int out_len) | |
2226 | { | |
63aaf647 RD |
2227 | struct ib_uverbs_destroy_qp cmd; |
2228 | struct ib_uverbs_destroy_qp_resp resp; | |
9ead190b | 2229 | struct ib_uobject *uobj; |
63aaf647 | 2230 | struct ib_qp *qp; |
9ead190b | 2231 | struct ib_uqp_object *obj; |
63aaf647 | 2232 | int ret = -EINVAL; |
bc38a6ab RD |
2233 | |
2234 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2235 | return -EFAULT; | |
2236 | ||
63aaf647 RD |
2237 | memset(&resp, 0, sizeof resp); |
2238 | ||
9ead190b RD |
2239 | uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext); |
2240 | if (!uobj) | |
2241 | return -EINVAL; | |
2242 | qp = uobj->object; | |
2243 | obj = container_of(uobj, struct ib_uqp_object, uevent.uobject); | |
f4e40156 | 2244 | |
9ead190b RD |
2245 | if (!list_empty(&obj->mcast_list)) { |
2246 | put_uobj_write(uobj); | |
2247 | return -EBUSY; | |
f4e40156 | 2248 | } |
bc38a6ab RD |
2249 | |
2250 | ret = ib_destroy_qp(qp); | |
9ead190b RD |
2251 | if (!ret) |
2252 | uobj->live = 0; | |
2253 | ||
2254 | put_uobj_write(uobj); | |
2255 | ||
bc38a6ab | 2256 | if (ret) |
9ead190b | 2257 | return ret; |
bc38a6ab | 2258 | |
846be90d YH |
2259 | if (obj->uxrcd) |
2260 | atomic_dec(&obj->uxrcd->refcnt); | |
2261 | ||
9ead190b | 2262 | idr_remove_uobj(&ib_uverbs_qp_idr, uobj); |
bc38a6ab | 2263 | |
95ed644f | 2264 | mutex_lock(&file->mutex); |
9ead190b | 2265 | list_del(&uobj->list); |
95ed644f | 2266 | mutex_unlock(&file->mutex); |
bc38a6ab | 2267 | |
9ead190b | 2268 | ib_uverbs_release_uevent(file, &obj->uevent); |
63aaf647 | 2269 | |
9ead190b | 2270 | resp.events_reported = obj->uevent.events_reported; |
63aaf647 | 2271 | |
9ead190b | 2272 | put_uobj(uobj); |
bc38a6ab | 2273 | |
63aaf647 RD |
2274 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2275 | &resp, sizeof resp)) | |
9ead190b | 2276 | return -EFAULT; |
bc38a6ab | 2277 | |
9ead190b | 2278 | return in_len; |
bc38a6ab RD |
2279 | } |
2280 | ||
67cdb40c | 2281 | ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file, |
a74cd4af RD |
2282 | const char __user *buf, int in_len, |
2283 | int out_len) | |
67cdb40c RD |
2284 | { |
2285 | struct ib_uverbs_post_send cmd; | |
2286 | struct ib_uverbs_post_send_resp resp; | |
2287 | struct ib_uverbs_send_wr *user_wr; | |
2288 | struct ib_send_wr *wr = NULL, *last, *next, *bad_wr; | |
2289 | struct ib_qp *qp; | |
2290 | int i, sg_ind; | |
9ead190b | 2291 | int is_ud; |
67cdb40c RD |
2292 | ssize_t ret = -EINVAL; |
2293 | ||
2294 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2295 | return -EFAULT; | |
2296 | ||
2297 | if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count + | |
2298 | cmd.sge_count * sizeof (struct ib_uverbs_sge)) | |
2299 | return -EINVAL; | |
2300 | ||
2301 | if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr)) | |
2302 | return -EINVAL; | |
2303 | ||
2304 | user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL); | |
2305 | if (!user_wr) | |
2306 | return -ENOMEM; | |
2307 | ||
9ead190b RD |
2308 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2309 | if (!qp) | |
67cdb40c RD |
2310 | goto out; |
2311 | ||
9ead190b | 2312 | is_ud = qp->qp_type == IB_QPT_UD; |
67cdb40c RD |
2313 | sg_ind = 0; |
2314 | last = NULL; | |
2315 | for (i = 0; i < cmd.wr_count; ++i) { | |
2316 | if (copy_from_user(user_wr, | |
2317 | buf + sizeof cmd + i * cmd.wqe_size, | |
2318 | cmd.wqe_size)) { | |
2319 | ret = -EFAULT; | |
9ead190b | 2320 | goto out_put; |
67cdb40c RD |
2321 | } |
2322 | ||
2323 | if (user_wr->num_sge + sg_ind > cmd.sge_count) { | |
2324 | ret = -EINVAL; | |
9ead190b | 2325 | goto out_put; |
67cdb40c RD |
2326 | } |
2327 | ||
2328 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
2329 | user_wr->num_sge * sizeof (struct ib_sge), | |
2330 | GFP_KERNEL); | |
2331 | if (!next) { | |
2332 | ret = -ENOMEM; | |
9ead190b | 2333 | goto out_put; |
67cdb40c RD |
2334 | } |
2335 | ||
2336 | if (!last) | |
2337 | wr = next; | |
2338 | else | |
2339 | last->next = next; | |
2340 | last = next; | |
2341 | ||
2342 | next->next = NULL; | |
2343 | next->wr_id = user_wr->wr_id; | |
2344 | next->num_sge = user_wr->num_sge; | |
2345 | next->opcode = user_wr->opcode; | |
2346 | next->send_flags = user_wr->send_flags; | |
67cdb40c | 2347 | |
9ead190b RD |
2348 | if (is_ud) { |
2349 | next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah, | |
2350 | file->ucontext); | |
67cdb40c RD |
2351 | if (!next->wr.ud.ah) { |
2352 | ret = -EINVAL; | |
9ead190b | 2353 | goto out_put; |
67cdb40c RD |
2354 | } |
2355 | next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn; | |
2356 | next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey; | |
6b7d103c LI |
2357 | if (next->opcode == IB_WR_SEND_WITH_IMM) |
2358 | next->ex.imm_data = | |
2359 | (__be32 __force) user_wr->ex.imm_data; | |
67cdb40c RD |
2360 | } else { |
2361 | switch (next->opcode) { | |
67cdb40c | 2362 | case IB_WR_RDMA_WRITE_WITH_IMM: |
0f39cf3d RD |
2363 | next->ex.imm_data = |
2364 | (__be32 __force) user_wr->ex.imm_data; | |
2365 | case IB_WR_RDMA_WRITE: | |
67cdb40c RD |
2366 | case IB_WR_RDMA_READ: |
2367 | next->wr.rdma.remote_addr = | |
2368 | user_wr->wr.rdma.remote_addr; | |
2369 | next->wr.rdma.rkey = | |
2370 | user_wr->wr.rdma.rkey; | |
2371 | break; | |
0f39cf3d RD |
2372 | case IB_WR_SEND_WITH_IMM: |
2373 | next->ex.imm_data = | |
2374 | (__be32 __force) user_wr->ex.imm_data; | |
2375 | break; | |
2376 | case IB_WR_SEND_WITH_INV: | |
2377 | next->ex.invalidate_rkey = | |
2378 | user_wr->ex.invalidate_rkey; | |
2379 | break; | |
67cdb40c RD |
2380 | case IB_WR_ATOMIC_CMP_AND_SWP: |
2381 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
2382 | next->wr.atomic.remote_addr = | |
2383 | user_wr->wr.atomic.remote_addr; | |
2384 | next->wr.atomic.compare_add = | |
2385 | user_wr->wr.atomic.compare_add; | |
2386 | next->wr.atomic.swap = user_wr->wr.atomic.swap; | |
2387 | next->wr.atomic.rkey = user_wr->wr.atomic.rkey; | |
2388 | break; | |
2389 | default: | |
2390 | break; | |
2391 | } | |
2392 | } | |
2393 | ||
2394 | if (next->num_sge) { | |
2395 | next->sg_list = (void *) next + | |
2396 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2397 | if (copy_from_user(next->sg_list, | |
2398 | buf + sizeof cmd + | |
2399 | cmd.wr_count * cmd.wqe_size + | |
2400 | sg_ind * sizeof (struct ib_sge), | |
2401 | next->num_sge * sizeof (struct ib_sge))) { | |
2402 | ret = -EFAULT; | |
9ead190b | 2403 | goto out_put; |
67cdb40c RD |
2404 | } |
2405 | sg_ind += next->num_sge; | |
2406 | } else | |
2407 | next->sg_list = NULL; | |
2408 | } | |
2409 | ||
2410 | resp.bad_wr = 0; | |
0e0ec7e0 | 2411 | ret = qp->device->post_send(qp->real_qp, wr, &bad_wr); |
67cdb40c RD |
2412 | if (ret) |
2413 | for (next = wr; next; next = next->next) { | |
2414 | ++resp.bad_wr; | |
2415 | if (next == bad_wr) | |
2416 | break; | |
2417 | } | |
2418 | ||
2419 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2420 | &resp, sizeof resp)) | |
2421 | ret = -EFAULT; | |
2422 | ||
9ead190b RD |
2423 | out_put: |
2424 | put_qp_read(qp); | |
67cdb40c RD |
2425 | |
2426 | while (wr) { | |
9ead190b RD |
2427 | if (is_ud && wr->wr.ud.ah) |
2428 | put_ah_read(wr->wr.ud.ah); | |
67cdb40c RD |
2429 | next = wr->next; |
2430 | kfree(wr); | |
2431 | wr = next; | |
2432 | } | |
2433 | ||
18320828 | 2434 | out: |
67cdb40c RD |
2435 | kfree(user_wr); |
2436 | ||
2437 | return ret ? ret : in_len; | |
2438 | } | |
2439 | ||
2440 | static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf, | |
2441 | int in_len, | |
2442 | u32 wr_count, | |
2443 | u32 sge_count, | |
2444 | u32 wqe_size) | |
2445 | { | |
2446 | struct ib_uverbs_recv_wr *user_wr; | |
2447 | struct ib_recv_wr *wr = NULL, *last, *next; | |
2448 | int sg_ind; | |
2449 | int i; | |
2450 | int ret; | |
2451 | ||
2452 | if (in_len < wqe_size * wr_count + | |
2453 | sge_count * sizeof (struct ib_uverbs_sge)) | |
2454 | return ERR_PTR(-EINVAL); | |
2455 | ||
2456 | if (wqe_size < sizeof (struct ib_uverbs_recv_wr)) | |
2457 | return ERR_PTR(-EINVAL); | |
2458 | ||
2459 | user_wr = kmalloc(wqe_size, GFP_KERNEL); | |
2460 | if (!user_wr) | |
2461 | return ERR_PTR(-ENOMEM); | |
2462 | ||
2463 | sg_ind = 0; | |
2464 | last = NULL; | |
2465 | for (i = 0; i < wr_count; ++i) { | |
2466 | if (copy_from_user(user_wr, buf + i * wqe_size, | |
2467 | wqe_size)) { | |
2468 | ret = -EFAULT; | |
2469 | goto err; | |
2470 | } | |
2471 | ||
2472 | if (user_wr->num_sge + sg_ind > sge_count) { | |
2473 | ret = -EINVAL; | |
2474 | goto err; | |
2475 | } | |
2476 | ||
2477 | next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) + | |
2478 | user_wr->num_sge * sizeof (struct ib_sge), | |
2479 | GFP_KERNEL); | |
2480 | if (!next) { | |
2481 | ret = -ENOMEM; | |
2482 | goto err; | |
2483 | } | |
2484 | ||
2485 | if (!last) | |
2486 | wr = next; | |
2487 | else | |
2488 | last->next = next; | |
2489 | last = next; | |
2490 | ||
2491 | next->next = NULL; | |
2492 | next->wr_id = user_wr->wr_id; | |
2493 | next->num_sge = user_wr->num_sge; | |
2494 | ||
2495 | if (next->num_sge) { | |
2496 | next->sg_list = (void *) next + | |
2497 | ALIGN(sizeof *next, sizeof (struct ib_sge)); | |
2498 | if (copy_from_user(next->sg_list, | |
2499 | buf + wr_count * wqe_size + | |
2500 | sg_ind * sizeof (struct ib_sge), | |
2501 | next->num_sge * sizeof (struct ib_sge))) { | |
2502 | ret = -EFAULT; | |
2503 | goto err; | |
2504 | } | |
2505 | sg_ind += next->num_sge; | |
2506 | } else | |
2507 | next->sg_list = NULL; | |
2508 | } | |
2509 | ||
2510 | kfree(user_wr); | |
2511 | return wr; | |
2512 | ||
2513 | err: | |
2514 | kfree(user_wr); | |
2515 | ||
2516 | while (wr) { | |
2517 | next = wr->next; | |
2518 | kfree(wr); | |
2519 | wr = next; | |
2520 | } | |
2521 | ||
2522 | return ERR_PTR(ret); | |
2523 | } | |
2524 | ||
2525 | ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
2526 | const char __user *buf, int in_len, |
2527 | int out_len) | |
67cdb40c RD |
2528 | { |
2529 | struct ib_uverbs_post_recv cmd; | |
2530 | struct ib_uverbs_post_recv_resp resp; | |
2531 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2532 | struct ib_qp *qp; | |
2533 | ssize_t ret = -EINVAL; | |
2534 | ||
2535 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2536 | return -EFAULT; | |
2537 | ||
2538 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2539 | in_len - sizeof cmd, cmd.wr_count, | |
2540 | cmd.sge_count, cmd.wqe_size); | |
2541 | if (IS_ERR(wr)) | |
2542 | return PTR_ERR(wr); | |
2543 | ||
9ead190b RD |
2544 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); |
2545 | if (!qp) | |
67cdb40c RD |
2546 | goto out; |
2547 | ||
2548 | resp.bad_wr = 0; | |
0e0ec7e0 | 2549 | ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr); |
9ead190b RD |
2550 | |
2551 | put_qp_read(qp); | |
2552 | ||
67cdb40c RD |
2553 | if (ret) |
2554 | for (next = wr; next; next = next->next) { | |
2555 | ++resp.bad_wr; | |
2556 | if (next == bad_wr) | |
2557 | break; | |
2558 | } | |
2559 | ||
67cdb40c RD |
2560 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2561 | &resp, sizeof resp)) | |
2562 | ret = -EFAULT; | |
2563 | ||
2564 | out: | |
67cdb40c RD |
2565 | while (wr) { |
2566 | next = wr->next; | |
2567 | kfree(wr); | |
2568 | wr = next; | |
2569 | } | |
2570 | ||
2571 | return ret ? ret : in_len; | |
2572 | } | |
2573 | ||
2574 | ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file, | |
a74cd4af RD |
2575 | const char __user *buf, int in_len, |
2576 | int out_len) | |
67cdb40c RD |
2577 | { |
2578 | struct ib_uverbs_post_srq_recv cmd; | |
2579 | struct ib_uverbs_post_srq_recv_resp resp; | |
2580 | struct ib_recv_wr *wr, *next, *bad_wr; | |
2581 | struct ib_srq *srq; | |
2582 | ssize_t ret = -EINVAL; | |
2583 | ||
2584 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2585 | return -EFAULT; | |
2586 | ||
2587 | wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd, | |
2588 | in_len - sizeof cmd, cmd.wr_count, | |
2589 | cmd.sge_count, cmd.wqe_size); | |
2590 | if (IS_ERR(wr)) | |
2591 | return PTR_ERR(wr); | |
2592 | ||
9ead190b RD |
2593 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
2594 | if (!srq) | |
67cdb40c RD |
2595 | goto out; |
2596 | ||
2597 | resp.bad_wr = 0; | |
2598 | ret = srq->device->post_srq_recv(srq, wr, &bad_wr); | |
9ead190b RD |
2599 | |
2600 | put_srq_read(srq); | |
2601 | ||
67cdb40c RD |
2602 | if (ret) |
2603 | for (next = wr; next; next = next->next) { | |
2604 | ++resp.bad_wr; | |
2605 | if (next == bad_wr) | |
2606 | break; | |
2607 | } | |
2608 | ||
67cdb40c RD |
2609 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
2610 | &resp, sizeof resp)) | |
2611 | ret = -EFAULT; | |
2612 | ||
2613 | out: | |
67cdb40c RD |
2614 | while (wr) { |
2615 | next = wr->next; | |
2616 | kfree(wr); | |
2617 | wr = next; | |
2618 | } | |
2619 | ||
2620 | return ret ? ret : in_len; | |
2621 | } | |
2622 | ||
2623 | ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file, | |
2624 | const char __user *buf, int in_len, | |
2625 | int out_len) | |
2626 | { | |
2627 | struct ib_uverbs_create_ah cmd; | |
2628 | struct ib_uverbs_create_ah_resp resp; | |
2629 | struct ib_uobject *uobj; | |
2630 | struct ib_pd *pd; | |
2631 | struct ib_ah *ah; | |
2632 | struct ib_ah_attr attr; | |
2633 | int ret; | |
2634 | ||
2635 | if (out_len < sizeof resp) | |
2636 | return -ENOSPC; | |
2637 | ||
2638 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2639 | return -EFAULT; | |
2640 | ||
2641 | uobj = kmalloc(sizeof *uobj, GFP_KERNEL); | |
2642 | if (!uobj) | |
2643 | return -ENOMEM; | |
2644 | ||
3bea57a5 | 2645 | init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_class); |
9ead190b | 2646 | down_write(&uobj->mutex); |
67cdb40c | 2647 | |
9ead190b RD |
2648 | pd = idr_read_pd(cmd.pd_handle, file->ucontext); |
2649 | if (!pd) { | |
67cdb40c | 2650 | ret = -EINVAL; |
9ead190b | 2651 | goto err; |
67cdb40c RD |
2652 | } |
2653 | ||
67cdb40c RD |
2654 | attr.dlid = cmd.attr.dlid; |
2655 | attr.sl = cmd.attr.sl; | |
2656 | attr.src_path_bits = cmd.attr.src_path_bits; | |
2657 | attr.static_rate = cmd.attr.static_rate; | |
ea5d4a6a | 2658 | attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0; |
67cdb40c RD |
2659 | attr.port_num = cmd.attr.port_num; |
2660 | attr.grh.flow_label = cmd.attr.grh.flow_label; | |
2661 | attr.grh.sgid_index = cmd.attr.grh.sgid_index; | |
2662 | attr.grh.hop_limit = cmd.attr.grh.hop_limit; | |
2663 | attr.grh.traffic_class = cmd.attr.grh.traffic_class; | |
8b0f93d9 DS |
2664 | attr.vlan_id = 0; |
2665 | memset(&attr.dmac, 0, sizeof(attr.dmac)); | |
67cdb40c RD |
2666 | memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16); |
2667 | ||
2668 | ah = ib_create_ah(pd, &attr); | |
2669 | if (IS_ERR(ah)) { | |
2670 | ret = PTR_ERR(ah); | |
ec924b47 | 2671 | goto err_put; |
67cdb40c RD |
2672 | } |
2673 | ||
9ead190b RD |
2674 | ah->uobject = uobj; |
2675 | uobj->object = ah; | |
67cdb40c | 2676 | |
9ead190b | 2677 | ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c RD |
2678 | if (ret) |
2679 | goto err_destroy; | |
2680 | ||
2681 | resp.ah_handle = uobj->id; | |
2682 | ||
2683 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
2684 | &resp, sizeof resp)) { | |
2685 | ret = -EFAULT; | |
9ead190b | 2686 | goto err_copy; |
67cdb40c RD |
2687 | } |
2688 | ||
9ead190b RD |
2689 | put_pd_read(pd); |
2690 | ||
95ed644f | 2691 | mutex_lock(&file->mutex); |
67cdb40c | 2692 | list_add_tail(&uobj->list, &file->ucontext->ah_list); |
95ed644f | 2693 | mutex_unlock(&file->mutex); |
67cdb40c | 2694 | |
9ead190b RD |
2695 | uobj->live = 1; |
2696 | ||
2697 | up_write(&uobj->mutex); | |
67cdb40c RD |
2698 | |
2699 | return in_len; | |
2700 | ||
9ead190b RD |
2701 | err_copy: |
2702 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); | |
67cdb40c RD |
2703 | |
2704 | err_destroy: | |
2705 | ib_destroy_ah(ah); | |
2706 | ||
ec924b47 MT |
2707 | err_put: |
2708 | put_pd_read(pd); | |
2709 | ||
9ead190b RD |
2710 | err: |
2711 | put_uobj_write(uobj); | |
67cdb40c RD |
2712 | return ret; |
2713 | } | |
2714 | ||
2715 | ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file, | |
2716 | const char __user *buf, int in_len, int out_len) | |
2717 | { | |
2718 | struct ib_uverbs_destroy_ah cmd; | |
2719 | struct ib_ah *ah; | |
2720 | struct ib_uobject *uobj; | |
9ead190b | 2721 | int ret; |
67cdb40c RD |
2722 | |
2723 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2724 | return -EFAULT; | |
2725 | ||
9ead190b RD |
2726 | uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext); |
2727 | if (!uobj) | |
2728 | return -EINVAL; | |
2729 | ah = uobj->object; | |
67cdb40c | 2730 | |
9ead190b RD |
2731 | ret = ib_destroy_ah(ah); |
2732 | if (!ret) | |
2733 | uobj->live = 0; | |
67cdb40c | 2734 | |
9ead190b | 2735 | put_uobj_write(uobj); |
67cdb40c | 2736 | |
67cdb40c | 2737 | if (ret) |
9ead190b | 2738 | return ret; |
67cdb40c | 2739 | |
9ead190b | 2740 | idr_remove_uobj(&ib_uverbs_ah_idr, uobj); |
67cdb40c | 2741 | |
95ed644f | 2742 | mutex_lock(&file->mutex); |
67cdb40c | 2743 | list_del(&uobj->list); |
95ed644f | 2744 | mutex_unlock(&file->mutex); |
67cdb40c | 2745 | |
9ead190b | 2746 | put_uobj(uobj); |
67cdb40c | 2747 | |
9ead190b | 2748 | return in_len; |
67cdb40c RD |
2749 | } |
2750 | ||
bc38a6ab RD |
2751 | ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file, |
2752 | const char __user *buf, int in_len, | |
2753 | int out_len) | |
2754 | { | |
2755 | struct ib_uverbs_attach_mcast cmd; | |
2756 | struct ib_qp *qp; | |
9ead190b | 2757 | struct ib_uqp_object *obj; |
f4e40156 | 2758 | struct ib_uverbs_mcast_entry *mcast; |
9ead190b | 2759 | int ret; |
bc38a6ab RD |
2760 | |
2761 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2762 | return -EFAULT; | |
2763 | ||
e214a0fe | 2764 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2765 | if (!qp) |
2766 | return -EINVAL; | |
f4e40156 | 2767 | |
9ead190b | 2768 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 2769 | |
9ead190b | 2770 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
2771 | if (cmd.mlid == mcast->lid && |
2772 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
2773 | ret = 0; | |
9ead190b | 2774 | goto out_put; |
f4e40156 JM |
2775 | } |
2776 | ||
2777 | mcast = kmalloc(sizeof *mcast, GFP_KERNEL); | |
2778 | if (!mcast) { | |
2779 | ret = -ENOMEM; | |
9ead190b | 2780 | goto out_put; |
f4e40156 JM |
2781 | } |
2782 | ||
2783 | mcast->lid = cmd.mlid; | |
2784 | memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw); | |
bc38a6ab | 2785 | |
f4e40156 | 2786 | ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid); |
9ead190b RD |
2787 | if (!ret) |
2788 | list_add_tail(&mcast->list, &obj->mcast_list); | |
2789 | else | |
f4e40156 JM |
2790 | kfree(mcast); |
2791 | ||
9ead190b | 2792 | out_put: |
e214a0fe | 2793 | put_qp_write(qp); |
bc38a6ab RD |
2794 | |
2795 | return ret ? ret : in_len; | |
2796 | } | |
2797 | ||
2798 | ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file, | |
2799 | const char __user *buf, int in_len, | |
2800 | int out_len) | |
2801 | { | |
2802 | struct ib_uverbs_detach_mcast cmd; | |
9ead190b | 2803 | struct ib_uqp_object *obj; |
bc38a6ab | 2804 | struct ib_qp *qp; |
f4e40156 | 2805 | struct ib_uverbs_mcast_entry *mcast; |
bc38a6ab RD |
2806 | int ret = -EINVAL; |
2807 | ||
2808 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
2809 | return -EFAULT; | |
2810 | ||
e214a0fe | 2811 | qp = idr_write_qp(cmd.qp_handle, file->ucontext); |
9ead190b RD |
2812 | if (!qp) |
2813 | return -EINVAL; | |
bc38a6ab | 2814 | |
f4e40156 JM |
2815 | ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid); |
2816 | if (ret) | |
9ead190b | 2817 | goto out_put; |
f4e40156 | 2818 | |
9ead190b | 2819 | obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject); |
f4e40156 | 2820 | |
9ead190b | 2821 | list_for_each_entry(mcast, &obj->mcast_list, list) |
f4e40156 JM |
2822 | if (cmd.mlid == mcast->lid && |
2823 | !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) { | |
2824 | list_del(&mcast->list); | |
2825 | kfree(mcast); | |
2826 | break; | |
2827 | } | |
2828 | ||
9ead190b | 2829 | out_put: |
e214a0fe | 2830 | put_qp_write(qp); |
bc38a6ab RD |
2831 | |
2832 | return ret ? ret : in_len; | |
2833 | } | |
f520ba5a | 2834 | |
b68c9560 | 2835 | static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, |
436f2ad0 HHZ |
2836 | union ib_flow_spec *ib_spec) |
2837 | { | |
c780d82a YD |
2838 | if (kern_spec->reserved) |
2839 | return -EINVAL; | |
2840 | ||
436f2ad0 HHZ |
2841 | ib_spec->type = kern_spec->type; |
2842 | ||
2843 | switch (ib_spec->type) { | |
2844 | case IB_FLOW_SPEC_ETH: | |
2845 | ib_spec->eth.size = sizeof(struct ib_flow_spec_eth); | |
2846 | if (ib_spec->eth.size != kern_spec->eth.size) | |
2847 | return -EINVAL; | |
2848 | memcpy(&ib_spec->eth.val, &kern_spec->eth.val, | |
2849 | sizeof(struct ib_flow_eth_filter)); | |
2850 | memcpy(&ib_spec->eth.mask, &kern_spec->eth.mask, | |
2851 | sizeof(struct ib_flow_eth_filter)); | |
2852 | break; | |
2853 | case IB_FLOW_SPEC_IPV4: | |
2854 | ib_spec->ipv4.size = sizeof(struct ib_flow_spec_ipv4); | |
2855 | if (ib_spec->ipv4.size != kern_spec->ipv4.size) | |
2856 | return -EINVAL; | |
2857 | memcpy(&ib_spec->ipv4.val, &kern_spec->ipv4.val, | |
2858 | sizeof(struct ib_flow_ipv4_filter)); | |
2859 | memcpy(&ib_spec->ipv4.mask, &kern_spec->ipv4.mask, | |
2860 | sizeof(struct ib_flow_ipv4_filter)); | |
2861 | break; | |
2862 | case IB_FLOW_SPEC_TCP: | |
2863 | case IB_FLOW_SPEC_UDP: | |
2864 | ib_spec->tcp_udp.size = sizeof(struct ib_flow_spec_tcp_udp); | |
2865 | if (ib_spec->tcp_udp.size != kern_spec->tcp_udp.size) | |
2866 | return -EINVAL; | |
2867 | memcpy(&ib_spec->tcp_udp.val, &kern_spec->tcp_udp.val, | |
2868 | sizeof(struct ib_flow_tcp_udp_filter)); | |
2869 | memcpy(&ib_spec->tcp_udp.mask, &kern_spec->tcp_udp.mask, | |
2870 | sizeof(struct ib_flow_tcp_udp_filter)); | |
2871 | break; | |
2872 | default: | |
2873 | return -EINVAL; | |
2874 | } | |
2875 | return 0; | |
2876 | } | |
2877 | ||
f21519b2 YD |
2878 | int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, |
2879 | struct ib_udata *ucore, | |
2880 | struct ib_udata *uhw) | |
436f2ad0 HHZ |
2881 | { |
2882 | struct ib_uverbs_create_flow cmd; | |
2883 | struct ib_uverbs_create_flow_resp resp; | |
2884 | struct ib_uobject *uobj; | |
2885 | struct ib_flow *flow_id; | |
d82693da | 2886 | struct ib_uverbs_flow_attr *kern_flow_attr; |
436f2ad0 HHZ |
2887 | struct ib_flow_attr *flow_attr; |
2888 | struct ib_qp *qp; | |
2889 | int err = 0; | |
2890 | void *kern_spec; | |
2891 | void *ib_spec; | |
2892 | int i; | |
436f2ad0 | 2893 | |
6bcca3d4 YD |
2894 | if (ucore->inlen < sizeof(cmd)) |
2895 | return -EINVAL; | |
2896 | ||
f21519b2 | 2897 | if (ucore->outlen < sizeof(resp)) |
436f2ad0 HHZ |
2898 | return -ENOSPC; |
2899 | ||
f21519b2 YD |
2900 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
2901 | if (err) | |
2902 | return err; | |
2903 | ||
2904 | ucore->inbuf += sizeof(cmd); | |
2905 | ucore->inlen -= sizeof(cmd); | |
436f2ad0 | 2906 | |
22878dbc MB |
2907 | if (cmd.comp_mask) |
2908 | return -EINVAL; | |
2909 | ||
436f2ad0 HHZ |
2910 | if ((cmd.flow_attr.type == IB_FLOW_ATTR_SNIFFER && |
2911 | !capable(CAP_NET_ADMIN)) || !capable(CAP_NET_RAW)) | |
2912 | return -EPERM; | |
2913 | ||
f8848274 | 2914 | if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS) |
22878dbc MB |
2915 | return -EINVAL; |
2916 | ||
f21519b2 | 2917 | if (cmd.flow_attr.size > ucore->inlen || |
f8848274 | 2918 | cmd.flow_attr.size > |
b68c9560 | 2919 | (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec))) |
22878dbc MB |
2920 | return -EINVAL; |
2921 | ||
c780d82a YD |
2922 | if (cmd.flow_attr.reserved[0] || |
2923 | cmd.flow_attr.reserved[1]) | |
2924 | return -EINVAL; | |
2925 | ||
436f2ad0 | 2926 | if (cmd.flow_attr.num_of_specs) { |
f8848274 MB |
2927 | kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size, |
2928 | GFP_KERNEL); | |
436f2ad0 HHZ |
2929 | if (!kern_flow_attr) |
2930 | return -ENOMEM; | |
2931 | ||
2932 | memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr)); | |
f21519b2 YD |
2933 | err = ib_copy_from_udata(kern_flow_attr + 1, ucore, |
2934 | cmd.flow_attr.size); | |
2935 | if (err) | |
436f2ad0 | 2936 | goto err_free_attr; |
436f2ad0 HHZ |
2937 | } else { |
2938 | kern_flow_attr = &cmd.flow_attr; | |
436f2ad0 HHZ |
2939 | } |
2940 | ||
2941 | uobj = kmalloc(sizeof(*uobj), GFP_KERNEL); | |
2942 | if (!uobj) { | |
2943 | err = -ENOMEM; | |
2944 | goto err_free_attr; | |
2945 | } | |
2946 | init_uobj(uobj, 0, file->ucontext, &rule_lock_class); | |
2947 | down_write(&uobj->mutex); | |
2948 | ||
2949 | qp = idr_read_qp(cmd.qp_handle, file->ucontext); | |
2950 | if (!qp) { | |
2951 | err = -EINVAL; | |
2952 | goto err_uobj; | |
2953 | } | |
2954 | ||
f8848274 | 2955 | flow_attr = kmalloc(sizeof(*flow_attr) + cmd.flow_attr.size, GFP_KERNEL); |
436f2ad0 HHZ |
2956 | if (!flow_attr) { |
2957 | err = -ENOMEM; | |
2958 | goto err_put; | |
2959 | } | |
2960 | ||
2961 | flow_attr->type = kern_flow_attr->type; | |
2962 | flow_attr->priority = kern_flow_attr->priority; | |
2963 | flow_attr->num_of_specs = kern_flow_attr->num_of_specs; | |
2964 | flow_attr->port = kern_flow_attr->port; | |
2965 | flow_attr->flags = kern_flow_attr->flags; | |
2966 | flow_attr->size = sizeof(*flow_attr); | |
2967 | ||
2968 | kern_spec = kern_flow_attr + 1; | |
2969 | ib_spec = flow_attr + 1; | |
f8848274 | 2970 | for (i = 0; i < flow_attr->num_of_specs && |
b68c9560 | 2971 | cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) && |
f8848274 | 2972 | cmd.flow_attr.size >= |
b68c9560 | 2973 | ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) { |
436f2ad0 HHZ |
2974 | err = kern_spec_to_ib_spec(kern_spec, ib_spec); |
2975 | if (err) | |
2976 | goto err_free; | |
2977 | flow_attr->size += | |
2978 | ((union ib_flow_spec *) ib_spec)->size; | |
b68c9560 YD |
2979 | cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size; |
2980 | kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size; | |
436f2ad0 HHZ |
2981 | ib_spec += ((union ib_flow_spec *) ib_spec)->size; |
2982 | } | |
f8848274 MB |
2983 | if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) { |
2984 | pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n", | |
2985 | i, cmd.flow_attr.size); | |
98a37510 | 2986 | err = -EINVAL; |
436f2ad0 HHZ |
2987 | goto err_free; |
2988 | } | |
2989 | flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER); | |
2990 | if (IS_ERR(flow_id)) { | |
2991 | err = PTR_ERR(flow_id); | |
2992 | goto err_free; | |
2993 | } | |
2994 | flow_id->qp = qp; | |
2995 | flow_id->uobject = uobj; | |
2996 | uobj->object = flow_id; | |
2997 | ||
2998 | err = idr_add_uobj(&ib_uverbs_rule_idr, uobj); | |
2999 | if (err) | |
3000 | goto destroy_flow; | |
3001 | ||
3002 | memset(&resp, 0, sizeof(resp)); | |
3003 | resp.flow_handle = uobj->id; | |
3004 | ||
f21519b2 YD |
3005 | err = ib_copy_to_udata(ucore, |
3006 | &resp, sizeof(resp)); | |
3007 | if (err) | |
436f2ad0 | 3008 | goto err_copy; |
436f2ad0 HHZ |
3009 | |
3010 | put_qp_read(qp); | |
3011 | mutex_lock(&file->mutex); | |
3012 | list_add_tail(&uobj->list, &file->ucontext->rule_list); | |
3013 | mutex_unlock(&file->mutex); | |
3014 | ||
3015 | uobj->live = 1; | |
3016 | ||
3017 | up_write(&uobj->mutex); | |
3018 | kfree(flow_attr); | |
3019 | if (cmd.flow_attr.num_of_specs) | |
3020 | kfree(kern_flow_attr); | |
f21519b2 | 3021 | return 0; |
436f2ad0 HHZ |
3022 | err_copy: |
3023 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
3024 | destroy_flow: | |
3025 | ib_destroy_flow(flow_id); | |
3026 | err_free: | |
3027 | kfree(flow_attr); | |
3028 | err_put: | |
3029 | put_qp_read(qp); | |
3030 | err_uobj: | |
3031 | put_uobj_write(uobj); | |
3032 | err_free_attr: | |
3033 | if (cmd.flow_attr.num_of_specs) | |
3034 | kfree(kern_flow_attr); | |
3035 | return err; | |
3036 | } | |
3037 | ||
f21519b2 YD |
3038 | int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file, |
3039 | struct ib_udata *ucore, | |
3040 | struct ib_udata *uhw) | |
3041 | { | |
436f2ad0 HHZ |
3042 | struct ib_uverbs_destroy_flow cmd; |
3043 | struct ib_flow *flow_id; | |
3044 | struct ib_uobject *uobj; | |
3045 | int ret; | |
3046 | ||
6bcca3d4 YD |
3047 | if (ucore->inlen < sizeof(cmd)) |
3048 | return -EINVAL; | |
3049 | ||
f21519b2 YD |
3050 | ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); |
3051 | if (ret) | |
3052 | return ret; | |
436f2ad0 | 3053 | |
2782c2d3 YD |
3054 | if (cmd.comp_mask) |
3055 | return -EINVAL; | |
3056 | ||
436f2ad0 HHZ |
3057 | uobj = idr_write_uobj(&ib_uverbs_rule_idr, cmd.flow_handle, |
3058 | file->ucontext); | |
3059 | if (!uobj) | |
3060 | return -EINVAL; | |
3061 | flow_id = uobj->object; | |
3062 | ||
3063 | ret = ib_destroy_flow(flow_id); | |
3064 | if (!ret) | |
3065 | uobj->live = 0; | |
3066 | ||
3067 | put_uobj_write(uobj); | |
3068 | ||
3069 | idr_remove_uobj(&ib_uverbs_rule_idr, uobj); | |
3070 | ||
3071 | mutex_lock(&file->mutex); | |
3072 | list_del(&uobj->list); | |
3073 | mutex_unlock(&file->mutex); | |
3074 | ||
3075 | put_uobj(uobj); | |
3076 | ||
f21519b2 | 3077 | return ret; |
436f2ad0 HHZ |
3078 | } |
3079 | ||
c89d1bed SH |
3080 | static int __uverbs_create_xsrq(struct ib_uverbs_file *file, |
3081 | struct ib_uverbs_create_xsrq *cmd, | |
3082 | struct ib_udata *udata) | |
f520ba5a | 3083 | { |
f520ba5a | 3084 | struct ib_uverbs_create_srq_resp resp; |
8541f8de | 3085 | struct ib_usrq_object *obj; |
f520ba5a RD |
3086 | struct ib_pd *pd; |
3087 | struct ib_srq *srq; | |
8541f8de | 3088 | struct ib_uobject *uninitialized_var(xrcd_uobj); |
f520ba5a RD |
3089 | struct ib_srq_init_attr attr; |
3090 | int ret; | |
3091 | ||
9ead190b RD |
3092 | obj = kmalloc(sizeof *obj, GFP_KERNEL); |
3093 | if (!obj) | |
f520ba5a RD |
3094 | return -ENOMEM; |
3095 | ||
3bea57a5 | 3096 | init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_class); |
8541f8de | 3097 | down_write(&obj->uevent.uobject.mutex); |
f520ba5a | 3098 | |
8541f8de | 3099 | if (cmd->srq_type == IB_SRQT_XRC) { |
8541f8de SH |
3100 | attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj); |
3101 | if (!attr.ext.xrc.xrcd) { | |
3102 | ret = -EINVAL; | |
5909ce54 | 3103 | goto err; |
8541f8de SH |
3104 | } |
3105 | ||
3106 | obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject); | |
3107 | atomic_inc(&obj->uxrcd->refcnt); | |
5909ce54 RD |
3108 | |
3109 | attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0); | |
3110 | if (!attr.ext.xrc.cq) { | |
3111 | ret = -EINVAL; | |
3112 | goto err_put_xrcd; | |
3113 | } | |
3114 | } | |
3115 | ||
3116 | pd = idr_read_pd(cmd->pd_handle, file->ucontext); | |
3117 | if (!pd) { | |
3118 | ret = -EINVAL; | |
3119 | goto err_put_cq; | |
8541f8de SH |
3120 | } |
3121 | ||
f520ba5a RD |
3122 | attr.event_handler = ib_uverbs_srq_event_handler; |
3123 | attr.srq_context = file; | |
8541f8de SH |
3124 | attr.srq_type = cmd->srq_type; |
3125 | attr.attr.max_wr = cmd->max_wr; | |
3126 | attr.attr.max_sge = cmd->max_sge; | |
3127 | attr.attr.srq_limit = cmd->srq_limit; | |
f520ba5a | 3128 | |
8541f8de SH |
3129 | obj->uevent.events_reported = 0; |
3130 | INIT_LIST_HEAD(&obj->uevent.event_list); | |
f520ba5a | 3131 | |
8541f8de | 3132 | srq = pd->device->create_srq(pd, &attr, udata); |
f520ba5a RD |
3133 | if (IS_ERR(srq)) { |
3134 | ret = PTR_ERR(srq); | |
ec924b47 | 3135 | goto err_put; |
f520ba5a RD |
3136 | } |
3137 | ||
8541f8de SH |
3138 | srq->device = pd->device; |
3139 | srq->pd = pd; | |
3140 | srq->srq_type = cmd->srq_type; | |
3141 | srq->uobject = &obj->uevent.uobject; | |
f520ba5a RD |
3142 | srq->event_handler = attr.event_handler; |
3143 | srq->srq_context = attr.srq_context; | |
8541f8de SH |
3144 | |
3145 | if (cmd->srq_type == IB_SRQT_XRC) { | |
3146 | srq->ext.xrc.cq = attr.ext.xrc.cq; | |
3147 | srq->ext.xrc.xrcd = attr.ext.xrc.xrcd; | |
3148 | atomic_inc(&attr.ext.xrc.cq->usecnt); | |
3149 | atomic_inc(&attr.ext.xrc.xrcd->usecnt); | |
3150 | } | |
3151 | ||
f520ba5a RD |
3152 | atomic_inc(&pd->usecnt); |
3153 | atomic_set(&srq->usecnt, 0); | |
3154 | ||
8541f8de SH |
3155 | obj->uevent.uobject.object = srq; |
3156 | ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); | |
f520ba5a RD |
3157 | if (ret) |
3158 | goto err_destroy; | |
3159 | ||
9ead190b | 3160 | memset(&resp, 0, sizeof resp); |
8541f8de | 3161 | resp.srq_handle = obj->uevent.uobject.id; |
ea88fd16 DB |
3162 | resp.max_wr = attr.attr.max_wr; |
3163 | resp.max_sge = attr.attr.max_sge; | |
8541f8de SH |
3164 | if (cmd->srq_type == IB_SRQT_XRC) |
3165 | resp.srqn = srq->ext.xrc.srq_num; | |
f520ba5a | 3166 | |
8541f8de | 3167 | if (copy_to_user((void __user *) (unsigned long) cmd->response, |
f520ba5a RD |
3168 | &resp, sizeof resp)) { |
3169 | ret = -EFAULT; | |
9ead190b | 3170 | goto err_copy; |
f520ba5a RD |
3171 | } |
3172 | ||
8541f8de SH |
3173 | if (cmd->srq_type == IB_SRQT_XRC) { |
3174 | put_uobj_read(xrcd_uobj); | |
3175 | put_cq_read(attr.ext.xrc.cq); | |
3176 | } | |
9ead190b RD |
3177 | put_pd_read(pd); |
3178 | ||
95ed644f | 3179 | mutex_lock(&file->mutex); |
8541f8de | 3180 | list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list); |
95ed644f | 3181 | mutex_unlock(&file->mutex); |
eb9d3cd5 | 3182 | |
8541f8de | 3183 | obj->uevent.uobject.live = 1; |
9ead190b | 3184 | |
8541f8de | 3185 | up_write(&obj->uevent.uobject.mutex); |
f520ba5a | 3186 | |
8541f8de | 3187 | return 0; |
f520ba5a | 3188 | |
9ead190b | 3189 | err_copy: |
8541f8de | 3190 | idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject); |
f520ba5a RD |
3191 | |
3192 | err_destroy: | |
3193 | ib_destroy_srq(srq); | |
3194 | ||
ec924b47 | 3195 | err_put: |
5909ce54 | 3196 | put_pd_read(pd); |
8541f8de SH |
3197 | |
3198 | err_put_cq: | |
3199 | if (cmd->srq_type == IB_SRQT_XRC) | |
3200 | put_cq_read(attr.ext.xrc.cq); | |
3201 | ||
5909ce54 RD |
3202 | err_put_xrcd: |
3203 | if (cmd->srq_type == IB_SRQT_XRC) { | |
3204 | atomic_dec(&obj->uxrcd->refcnt); | |
3205 | put_uobj_read(xrcd_uobj); | |
3206 | } | |
ec924b47 | 3207 | |
9ead190b | 3208 | err: |
8541f8de | 3209 | put_uobj_write(&obj->uevent.uobject); |
f520ba5a RD |
3210 | return ret; |
3211 | } | |
3212 | ||
8541f8de SH |
3213 | ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file, |
3214 | const char __user *buf, int in_len, | |
3215 | int out_len) | |
3216 | { | |
3217 | struct ib_uverbs_create_srq cmd; | |
3218 | struct ib_uverbs_create_xsrq xcmd; | |
3219 | struct ib_uverbs_create_srq_resp resp; | |
3220 | struct ib_udata udata; | |
3221 | int ret; | |
3222 | ||
3223 | if (out_len < sizeof resp) | |
3224 | return -ENOSPC; | |
3225 | ||
3226 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3227 | return -EFAULT; | |
3228 | ||
3229 | xcmd.response = cmd.response; | |
3230 | xcmd.user_handle = cmd.user_handle; | |
3231 | xcmd.srq_type = IB_SRQT_BASIC; | |
3232 | xcmd.pd_handle = cmd.pd_handle; | |
3233 | xcmd.max_wr = cmd.max_wr; | |
3234 | xcmd.max_sge = cmd.max_sge; | |
3235 | xcmd.srq_limit = cmd.srq_limit; | |
3236 | ||
3237 | INIT_UDATA(&udata, buf + sizeof cmd, | |
3238 | (unsigned long) cmd.response + sizeof resp, | |
3239 | in_len - sizeof cmd, out_len - sizeof resp); | |
3240 | ||
3241 | ret = __uverbs_create_xsrq(file, &xcmd, &udata); | |
3242 | if (ret) | |
3243 | return ret; | |
3244 | ||
3245 | return in_len; | |
3246 | } | |
3247 | ||
3248 | ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file, | |
3249 | const char __user *buf, int in_len, int out_len) | |
3250 | { | |
3251 | struct ib_uverbs_create_xsrq cmd; | |
3252 | struct ib_uverbs_create_srq_resp resp; | |
3253 | struct ib_udata udata; | |
3254 | int ret; | |
3255 | ||
3256 | if (out_len < sizeof resp) | |
3257 | return -ENOSPC; | |
3258 | ||
3259 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3260 | return -EFAULT; | |
3261 | ||
3262 | INIT_UDATA(&udata, buf + sizeof cmd, | |
3263 | (unsigned long) cmd.response + sizeof resp, | |
3264 | in_len - sizeof cmd, out_len - sizeof resp); | |
3265 | ||
3266 | ret = __uverbs_create_xsrq(file, &cmd, &udata); | |
3267 | if (ret) | |
3268 | return ret; | |
3269 | ||
3270 | return in_len; | |
3271 | } | |
3272 | ||
f520ba5a RD |
3273 | ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file, |
3274 | const char __user *buf, int in_len, | |
3275 | int out_len) | |
3276 | { | |
3277 | struct ib_uverbs_modify_srq cmd; | |
9bc57e2d | 3278 | struct ib_udata udata; |
f520ba5a RD |
3279 | struct ib_srq *srq; |
3280 | struct ib_srq_attr attr; | |
3281 | int ret; | |
3282 | ||
3283 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3284 | return -EFAULT; | |
3285 | ||
9bc57e2d RC |
3286 | INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd, |
3287 | out_len); | |
3288 | ||
9ead190b RD |
3289 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
3290 | if (!srq) | |
3291 | return -EINVAL; | |
f520ba5a RD |
3292 | |
3293 | attr.max_wr = cmd.max_wr; | |
f520ba5a RD |
3294 | attr.srq_limit = cmd.srq_limit; |
3295 | ||
9bc57e2d | 3296 | ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata); |
f520ba5a | 3297 | |
9ead190b | 3298 | put_srq_read(srq); |
f520ba5a RD |
3299 | |
3300 | return ret ? ret : in_len; | |
3301 | } | |
3302 | ||
8bdb0e86 DB |
3303 | ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file, |
3304 | const char __user *buf, | |
3305 | int in_len, int out_len) | |
3306 | { | |
3307 | struct ib_uverbs_query_srq cmd; | |
3308 | struct ib_uverbs_query_srq_resp resp; | |
3309 | struct ib_srq_attr attr; | |
3310 | struct ib_srq *srq; | |
3311 | int ret; | |
3312 | ||
3313 | if (out_len < sizeof resp) | |
3314 | return -ENOSPC; | |
3315 | ||
3316 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3317 | return -EFAULT; | |
3318 | ||
9ead190b RD |
3319 | srq = idr_read_srq(cmd.srq_handle, file->ucontext); |
3320 | if (!srq) | |
3321 | return -EINVAL; | |
8bdb0e86 | 3322 | |
9ead190b | 3323 | ret = ib_query_srq(srq, &attr); |
8bdb0e86 | 3324 | |
9ead190b | 3325 | put_srq_read(srq); |
8bdb0e86 DB |
3326 | |
3327 | if (ret) | |
9ead190b | 3328 | return ret; |
8bdb0e86 DB |
3329 | |
3330 | memset(&resp, 0, sizeof resp); | |
3331 | ||
3332 | resp.max_wr = attr.max_wr; | |
3333 | resp.max_sge = attr.max_sge; | |
3334 | resp.srq_limit = attr.srq_limit; | |
3335 | ||
3336 | if (copy_to_user((void __user *) (unsigned long) cmd.response, | |
3337 | &resp, sizeof resp)) | |
9ead190b | 3338 | return -EFAULT; |
8bdb0e86 | 3339 | |
9ead190b | 3340 | return in_len; |
8bdb0e86 DB |
3341 | } |
3342 | ||
f520ba5a RD |
3343 | ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file, |
3344 | const char __user *buf, int in_len, | |
3345 | int out_len) | |
3346 | { | |
63aaf647 RD |
3347 | struct ib_uverbs_destroy_srq cmd; |
3348 | struct ib_uverbs_destroy_srq_resp resp; | |
9ead190b | 3349 | struct ib_uobject *uobj; |
63aaf647 | 3350 | struct ib_srq *srq; |
9ead190b | 3351 | struct ib_uevent_object *obj; |
63aaf647 | 3352 | int ret = -EINVAL; |
846be90d YH |
3353 | struct ib_usrq_object *us; |
3354 | enum ib_srq_type srq_type; | |
f520ba5a RD |
3355 | |
3356 | if (copy_from_user(&cmd, buf, sizeof cmd)) | |
3357 | return -EFAULT; | |
3358 | ||
9ead190b RD |
3359 | uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext); |
3360 | if (!uobj) | |
3361 | return -EINVAL; | |
3362 | srq = uobj->object; | |
3363 | obj = container_of(uobj, struct ib_uevent_object, uobject); | |
846be90d | 3364 | srq_type = srq->srq_type; |
63aaf647 | 3365 | |
9ead190b RD |
3366 | ret = ib_destroy_srq(srq); |
3367 | if (!ret) | |
3368 | uobj->live = 0; | |
f520ba5a | 3369 | |
9ead190b | 3370 | put_uobj_write(uobj); |
f520ba5a | 3371 | |
f520ba5a | 3372 | if (ret) |
9ead190b | 3373 | return ret; |
f520ba5a | 3374 | |
846be90d YH |
3375 | if (srq_type == IB_SRQT_XRC) { |
3376 | us = container_of(obj, struct ib_usrq_object, uevent); | |
3377 | atomic_dec(&us->uxrcd->refcnt); | |
3378 | } | |
3379 | ||
9ead190b | 3380 | idr_remove_uobj(&ib_uverbs_srq_idr, uobj); |
f520ba5a | 3381 | |
95ed644f | 3382 | mutex_lock(&file->mutex); |
9ead190b | 3383 | list_del(&uobj->list); |
95ed644f | 3384 | mutex_unlock(&file->mutex); |
f520ba5a | 3385 | |
9ead190b | 3386 | ib_uverbs_release_uevent(file, obj); |
63aaf647 | 3387 | |
9ead190b RD |
3388 | memset(&resp, 0, sizeof resp); |
3389 | resp.events_reported = obj->events_reported; | |
63aaf647 | 3390 | |
9ead190b | 3391 | put_uobj(uobj); |
f520ba5a | 3392 | |
63aaf647 RD |
3393 | if (copy_to_user((void __user *) (unsigned long) cmd.response, |
3394 | &resp, sizeof resp)) | |
3395 | ret = -EFAULT; | |
3396 | ||
f520ba5a RD |
3397 | return ret ? ret : in_len; |
3398 | } | |
02d1aa7a EC |
3399 | |
3400 | int ib_uverbs_ex_query_device(struct ib_uverbs_file *file, | |
3401 | struct ib_udata *ucore, | |
3402 | struct ib_udata *uhw) | |
3403 | { | |
3404 | struct ib_uverbs_ex_query_device_resp resp; | |
3405 | struct ib_uverbs_ex_query_device cmd; | |
3406 | struct ib_device_attr attr; | |
3407 | struct ib_device *device; | |
3408 | int err; | |
3409 | ||
3410 | device = file->device->ib_dev; | |
3411 | if (ucore->inlen < sizeof(cmd)) | |
3412 | return -EINVAL; | |
3413 | ||
3414 | err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd)); | |
3415 | if (err) | |
3416 | return err; | |
3417 | ||
3418 | if (cmd.comp_mask) | |
3419 | return -EINVAL; | |
3420 | ||
3421 | if (cmd.reserved) | |
3422 | return -EINVAL; | |
3423 | ||
f4056bfd | 3424 | resp.response_length = offsetof(typeof(resp), odp_caps); |
02d1aa7a EC |
3425 | |
3426 | if (ucore->outlen < resp.response_length) | |
3427 | return -ENOSPC; | |
3428 | ||
3429 | err = device->query_device(device, &attr); | |
3430 | if (err) | |
3431 | return err; | |
3432 | ||
3433 | copy_query_dev_fields(file, &resp.base, &attr); | |
3434 | resp.comp_mask = 0; | |
3435 | ||
f4056bfd HE |
3436 | if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps)) |
3437 | goto end; | |
3438 | ||
3439 | #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING | |
3440 | resp.odp_caps.general_caps = attr.odp_caps.general_caps; | |
3441 | resp.odp_caps.per_transport_caps.rc_odp_caps = | |
3442 | attr.odp_caps.per_transport_caps.rc_odp_caps; | |
3443 | resp.odp_caps.per_transport_caps.uc_odp_caps = | |
3444 | attr.odp_caps.per_transport_caps.uc_odp_caps; | |
3445 | resp.odp_caps.per_transport_caps.ud_odp_caps = | |
3446 | attr.odp_caps.per_transport_caps.ud_odp_caps; | |
3447 | resp.odp_caps.reserved = 0; | |
3448 | #else | |
3449 | memset(&resp.odp_caps, 0, sizeof(resp.odp_caps)); | |
3450 | #endif | |
3451 | resp.response_length += sizeof(resp.odp_caps); | |
3452 | ||
3453 | end: | |
02d1aa7a EC |
3454 | err = ib_copy_to_udata(ucore, &resp, resp.response_length); |
3455 | if (err) | |
3456 | return err; | |
3457 | ||
3458 | return 0; | |
3459 | } |