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1/*
2 * Copyright (c) 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
4 * Copyright (c) 2005 PathScale, Inc. All rights reserved.
5 * Copyright (c) 2006 Mellanox Technologies. All rights reserved.
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.
34 */
35
36#include <linux/file.h>
37#include <linux/fs.h>
38#include <linux/slab.h>
39
40#include <asm/uaccess.h>
41
42#include "uverbs.h"
43
44static struct lock_class_key pd_lock_key;
45static struct lock_class_key mr_lock_key;
46static struct lock_class_key cq_lock_key;
47static struct lock_class_key qp_lock_key;
48static struct lock_class_key ah_lock_key;
49static struct lock_class_key srq_lock_key;
50
51#define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \
52 do { \
53 (udata)->inbuf = (void __user *) (ibuf); \
54 (udata)->outbuf = (void __user *) (obuf); \
55 (udata)->inlen = (ilen); \
56 (udata)->outlen = (olen); \
57 } while (0)
58
59/*
60 * The ib_uobject locking scheme is as follows:
61 *
62 * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it
63 * needs to be held during all idr operations. When an object is
64 * looked up, a reference must be taken on the object's kref before
65 * dropping this lock.
66 *
67 * - Each object also has an rwsem. This rwsem must be held for
68 * reading while an operation that uses the object is performed.
69 * For example, while registering an MR, the associated PD's
70 * uobject.mutex must be held for reading. The rwsem must be held
71 * for writing while initializing or destroying an object.
72 *
73 * - In addition, each object has a "live" flag. If this flag is not
74 * set, then lookups of the object will fail even if it is found in
75 * the idr. This handles a reader that blocks and does not acquire
76 * the rwsem until after the object is destroyed. The destroy
77 * operation will set the live flag to 0 and then drop the rwsem;
78 * this will allow the reader to acquire the rwsem, see that the
79 * live flag is 0, and then drop the rwsem and its reference to
80 * object. The underlying storage will not be freed until the last
81 * reference to the object is dropped.
82 */
83
84static void init_uobj(struct ib_uobject *uobj, u64 user_handle,
85 struct ib_ucontext *context, struct lock_class_key *key)
86{
87 uobj->user_handle = user_handle;
88 uobj->context = context;
89 kref_init(&uobj->ref);
90 init_rwsem(&uobj->mutex);
91 lockdep_set_class(&uobj->mutex, key);
92 uobj->live = 0;
93}
94
95static void release_uobj(struct kref *kref)
96{
97 kfree(container_of(kref, struct ib_uobject, ref));
98}
99
100static void put_uobj(struct ib_uobject *uobj)
101{
102 kref_put(&uobj->ref, release_uobj);
103}
104
105static void put_uobj_read(struct ib_uobject *uobj)
106{
107 up_read(&uobj->mutex);
108 put_uobj(uobj);
109}
110
111static void put_uobj_write(struct ib_uobject *uobj)
112{
113 up_write(&uobj->mutex);
114 put_uobj(uobj);
115}
116
117static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj)
118{
119 int ret;
120
121retry:
122 if (!idr_pre_get(idr, GFP_KERNEL))
123 return -ENOMEM;
124
125 spin_lock(&ib_uverbs_idr_lock);
126 ret = idr_get_new(idr, uobj, &uobj->id);
127 spin_unlock(&ib_uverbs_idr_lock);
128
129 if (ret == -EAGAIN)
130 goto retry;
131
132 return ret;
133}
134
135void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj)
136{
137 spin_lock(&ib_uverbs_idr_lock);
138 idr_remove(idr, uobj->id);
139 spin_unlock(&ib_uverbs_idr_lock);
140}
141
142static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id,
143 struct ib_ucontext *context)
144{
145 struct ib_uobject *uobj;
146
147 spin_lock(&ib_uverbs_idr_lock);
148 uobj = idr_find(idr, id);
149 if (uobj) {
150 if (uobj->context == context)
151 kref_get(&uobj->ref);
152 else
153 uobj = NULL;
154 }
155 spin_unlock(&ib_uverbs_idr_lock);
156
157 return uobj;
158}
159
160static struct ib_uobject *idr_read_uobj(struct idr *idr, int id,
161 struct ib_ucontext *context, int nested)
162{
163 struct ib_uobject *uobj;
164
165 uobj = __idr_get_uobj(idr, id, context);
166 if (!uobj)
167 return NULL;
168
169 if (nested)
170 down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING);
171 else
172 down_read(&uobj->mutex);
173 if (!uobj->live) {
174 put_uobj_read(uobj);
175 return NULL;
176 }
177
178 return uobj;
179}
180
181static struct ib_uobject *idr_write_uobj(struct idr *idr, int id,
182 struct ib_ucontext *context)
183{
184 struct ib_uobject *uobj;
185
186 uobj = __idr_get_uobj(idr, id, context);
187 if (!uobj)
188 return NULL;
189
190 down_write(&uobj->mutex);
191 if (!uobj->live) {
192 put_uobj_write(uobj);
193 return NULL;
194 }
195
196 return uobj;
197}
198
199static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context,
200 int nested)
201{
202 struct ib_uobject *uobj;
203
204 uobj = idr_read_uobj(idr, id, context, nested);
205 return uobj ? uobj->object : NULL;
206}
207
208static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context)
209{
210 return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0);
211}
212
213static void put_pd_read(struct ib_pd *pd)
214{
215 put_uobj_read(pd->uobject);
216}
217
218static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested)
219{
220 return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested);
221}
222
223static void put_cq_read(struct ib_cq *cq)
224{
225 put_uobj_read(cq->uobject);
226}
227
228static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context)
229{
230 return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0);
231}
232
233static void put_ah_read(struct ib_ah *ah)
234{
235 put_uobj_read(ah->uobject);
236}
237
238static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context)
239{
240 return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0);
241}
242
243static void put_qp_read(struct ib_qp *qp)
244{
245 put_uobj_read(qp->uobject);
246}
247
248static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context)
249{
250 return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0);
251}
252
253static void put_srq_read(struct ib_srq *srq)
254{
255 put_uobj_read(srq->uobject);
256}
257
258ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
259 const char __user *buf,
260 int in_len, int out_len)
261{
262 struct ib_uverbs_get_context cmd;
263 struct ib_uverbs_get_context_resp resp;
264 struct ib_udata udata;
265 struct ib_device *ibdev = file->device->ib_dev;
266 struct ib_ucontext *ucontext;
267 struct file *filp;
268 int ret;
269
270 if (out_len < sizeof resp)
271 return -ENOSPC;
272
273 if (copy_from_user(&cmd, buf, sizeof cmd))
274 return -EFAULT;
275
276 mutex_lock(&file->mutex);
277
278 if (file->ucontext) {
279 ret = -EINVAL;
280 goto err;
281 }
282
283 INIT_UDATA(&udata, buf + sizeof cmd,
284 (unsigned long) cmd.response + sizeof resp,
285 in_len - sizeof cmd, out_len - sizeof resp);
286
287 ucontext = ibdev->alloc_ucontext(ibdev, &udata);
288 if (IS_ERR(ucontext)) {
289 ret = PTR_ERR(ucontext);
290 goto err;
291 }
292
293 ucontext->device = ibdev;
294 INIT_LIST_HEAD(&ucontext->pd_list);
295 INIT_LIST_HEAD(&ucontext->mr_list);
296 INIT_LIST_HEAD(&ucontext->mw_list);
297 INIT_LIST_HEAD(&ucontext->cq_list);
298 INIT_LIST_HEAD(&ucontext->qp_list);
299 INIT_LIST_HEAD(&ucontext->srq_list);
300 INIT_LIST_HEAD(&ucontext->ah_list);
301 ucontext->closing = 0;
302
303 resp.num_comp_vectors = file->device->num_comp_vectors;
304
305 ret = get_unused_fd();
306 if (ret < 0)
307 goto err_free;
308 resp.async_fd = ret;
309
310 filp = ib_uverbs_alloc_event_file(file, 1);
311 if (IS_ERR(filp)) {
312 ret = PTR_ERR(filp);
313 goto err_fd;
314 }
315
316 if (copy_to_user((void __user *) (unsigned long) cmd.response,
317 &resp, sizeof resp)) {
318 ret = -EFAULT;
319 goto err_file;
320 }
321
322 file->async_file = filp->private_data;
323
324 INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev,
325 ib_uverbs_event_handler);
326 ret = ib_register_event_handler(&file->event_handler);
327 if (ret)
328 goto err_file;
329
330 kref_get(&file->async_file->ref);
331 kref_get(&file->ref);
332 file->ucontext = ucontext;
333
334 fd_install(resp.async_fd, filp);
335
336 mutex_unlock(&file->mutex);
337
338 return in_len;
339
340err_file:
341 fput(filp);
342
343err_fd:
344 put_unused_fd(resp.async_fd);
345
346err_free:
347 ibdev->dealloc_ucontext(ucontext);
348
349err:
350 mutex_unlock(&file->mutex);
351 return ret;
352}
353
354ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
355 const char __user *buf,
356 int in_len, int out_len)
357{
358 struct ib_uverbs_query_device cmd;
359 struct ib_uverbs_query_device_resp resp;
360 struct ib_device_attr attr;
361 int ret;
362
363 if (out_len < sizeof resp)
364 return -ENOSPC;
365
366 if (copy_from_user(&cmd, buf, sizeof cmd))
367 return -EFAULT;
368
369 ret = ib_query_device(file->device->ib_dev, &attr);
370 if (ret)
371 return ret;
372
373 memset(&resp, 0, sizeof resp);
374
375 resp.fw_ver = attr.fw_ver;
376 resp.node_guid = file->device->ib_dev->node_guid;
377 resp.sys_image_guid = attr.sys_image_guid;
378 resp.max_mr_size = attr.max_mr_size;
379 resp.page_size_cap = attr.page_size_cap;
380 resp.vendor_id = attr.vendor_id;
381 resp.vendor_part_id = attr.vendor_part_id;
382 resp.hw_ver = attr.hw_ver;
383 resp.max_qp = attr.max_qp;
384 resp.max_qp_wr = attr.max_qp_wr;
385 resp.device_cap_flags = attr.device_cap_flags;
386 resp.max_sge = attr.max_sge;
387 resp.max_sge_rd = attr.max_sge_rd;
388 resp.max_cq = attr.max_cq;
389 resp.max_cqe = attr.max_cqe;
390 resp.max_mr = attr.max_mr;
391 resp.max_pd = attr.max_pd;
392 resp.max_qp_rd_atom = attr.max_qp_rd_atom;
393 resp.max_ee_rd_atom = attr.max_ee_rd_atom;
394 resp.max_res_rd_atom = attr.max_res_rd_atom;
395 resp.max_qp_init_rd_atom = attr.max_qp_init_rd_atom;
396 resp.max_ee_init_rd_atom = attr.max_ee_init_rd_atom;
397 resp.atomic_cap = attr.atomic_cap;
398 resp.max_ee = attr.max_ee;
399 resp.max_rdd = attr.max_rdd;
400 resp.max_mw = attr.max_mw;
401 resp.max_raw_ipv6_qp = attr.max_raw_ipv6_qp;
402 resp.max_raw_ethy_qp = attr.max_raw_ethy_qp;
403 resp.max_mcast_grp = attr.max_mcast_grp;
404 resp.max_mcast_qp_attach = attr.max_mcast_qp_attach;
405 resp.max_total_mcast_qp_attach = attr.max_total_mcast_qp_attach;
406 resp.max_ah = attr.max_ah;
407 resp.max_fmr = attr.max_fmr;
408 resp.max_map_per_fmr = attr.max_map_per_fmr;
409 resp.max_srq = attr.max_srq;
410 resp.max_srq_wr = attr.max_srq_wr;
411 resp.max_srq_sge = attr.max_srq_sge;
412 resp.max_pkeys = attr.max_pkeys;
413 resp.local_ca_ack_delay = attr.local_ca_ack_delay;
414 resp.phys_port_cnt = file->device->ib_dev->phys_port_cnt;
415
416 if (copy_to_user((void __user *) (unsigned long) cmd.response,
417 &resp, sizeof resp))
418 return -EFAULT;
419
420 return in_len;
421}
422
423ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file,
424 const char __user *buf,
425 int in_len, int out_len)
426{
427 struct ib_uverbs_query_port cmd;
428 struct ib_uverbs_query_port_resp resp;
429 struct ib_port_attr attr;
430 int ret;
431
432 if (out_len < sizeof resp)
433 return -ENOSPC;
434
435 if (copy_from_user(&cmd, buf, sizeof cmd))
436 return -EFAULT;
437
438 ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr);
439 if (ret)
440 return ret;
441
442 memset(&resp, 0, sizeof resp);
443
444 resp.state = attr.state;
445 resp.max_mtu = attr.max_mtu;
446 resp.active_mtu = attr.active_mtu;
447 resp.gid_tbl_len = attr.gid_tbl_len;
448 resp.port_cap_flags = attr.port_cap_flags;
449 resp.max_msg_sz = attr.max_msg_sz;
450 resp.bad_pkey_cntr = attr.bad_pkey_cntr;
451 resp.qkey_viol_cntr = attr.qkey_viol_cntr;
452 resp.pkey_tbl_len = attr.pkey_tbl_len;
453 resp.lid = attr.lid;
454 resp.sm_lid = attr.sm_lid;
455 resp.lmc = attr.lmc;
456 resp.max_vl_num = attr.max_vl_num;
457 resp.sm_sl = attr.sm_sl;
458 resp.subnet_timeout = attr.subnet_timeout;
459 resp.init_type_reply = attr.init_type_reply;
460 resp.active_width = attr.active_width;
461 resp.active_speed = attr.active_speed;
462 resp.phys_state = attr.phys_state;
463 resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev,
464 cmd.port_num);
465
466 if (copy_to_user((void __user *) (unsigned long) cmd.response,
467 &resp, sizeof resp))
468 return -EFAULT;
469
470 return in_len;
471}
472
473ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
474 const char __user *buf,
475 int in_len, int out_len)
476{
477 struct ib_uverbs_alloc_pd cmd;
478 struct ib_uverbs_alloc_pd_resp resp;
479 struct ib_udata udata;
480 struct ib_uobject *uobj;
481 struct ib_pd *pd;
482 int ret;
483
484 if (out_len < sizeof resp)
485 return -ENOSPC;
486
487 if (copy_from_user(&cmd, buf, sizeof cmd))
488 return -EFAULT;
489
490 INIT_UDATA(&udata, buf + sizeof cmd,
491 (unsigned long) cmd.response + sizeof resp,
492 in_len - sizeof cmd, out_len - sizeof resp);
493
494 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
495 if (!uobj)
496 return -ENOMEM;
497
498 init_uobj(uobj, 0, file->ucontext, &pd_lock_key);
499 down_write(&uobj->mutex);
500
501 pd = file->device->ib_dev->alloc_pd(file->device->ib_dev,
502 file->ucontext, &udata);
503 if (IS_ERR(pd)) {
504 ret = PTR_ERR(pd);
505 goto err;
506 }
507
508 pd->device = file->device->ib_dev;
509 pd->uobject = uobj;
510 atomic_set(&pd->usecnt, 0);
511
512 uobj->object = pd;
513 ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj);
514 if (ret)
515 goto err_idr;
516
517 memset(&resp, 0, sizeof resp);
518 resp.pd_handle = uobj->id;
519
520 if (copy_to_user((void __user *) (unsigned long) cmd.response,
521 &resp, sizeof resp)) {
522 ret = -EFAULT;
523 goto err_copy;
524 }
525
526 mutex_lock(&file->mutex);
527 list_add_tail(&uobj->list, &file->ucontext->pd_list);
528 mutex_unlock(&file->mutex);
529
530 uobj->live = 1;
531
532 up_write(&uobj->mutex);
533
534 return in_len;
535
536err_copy:
537 idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
538
539err_idr:
540 ib_dealloc_pd(pd);
541
542err:
543 put_uobj_write(uobj);
544 return ret;
545}
546
547ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
548 const char __user *buf,
549 int in_len, int out_len)
550{
551 struct ib_uverbs_dealloc_pd cmd;
552 struct ib_uobject *uobj;
553 int ret;
554
555 if (copy_from_user(&cmd, buf, sizeof cmd))
556 return -EFAULT;
557
558 uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext);
559 if (!uobj)
560 return -EINVAL;
561
562 ret = ib_dealloc_pd(uobj->object);
563 if (!ret)
564 uobj->live = 0;
565
566 put_uobj_write(uobj);
567
568 if (ret)
569 return ret;
570
571 idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
572
573 mutex_lock(&file->mutex);
574 list_del(&uobj->list);
575 mutex_unlock(&file->mutex);
576
577 put_uobj(uobj);
578
579 return in_len;
580}
581
582ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
583 const char __user *buf, int in_len,
584 int out_len)
585{
586 struct ib_uverbs_reg_mr cmd;
587 struct ib_uverbs_reg_mr_resp resp;
588 struct ib_udata udata;
589 struct ib_uobject *uobj;
590 struct ib_pd *pd;
591 struct ib_mr *mr;
592 int ret;
593
594 if (out_len < sizeof resp)
595 return -ENOSPC;
596
597 if (copy_from_user(&cmd, buf, sizeof cmd))
598 return -EFAULT;
599
600 INIT_UDATA(&udata, buf + sizeof cmd,
601 (unsigned long) cmd.response + sizeof resp,
602 in_len - sizeof cmd, out_len - sizeof resp);
603
604 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
605 return -EINVAL;
606
607 /*
608 * Local write permission is required if remote write or
609 * remote atomic permission is also requested.
610 */
611 if (cmd.access_flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
612 !(cmd.access_flags & IB_ACCESS_LOCAL_WRITE))
613 return -EINVAL;
614
615 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
616 if (!uobj)
617 return -ENOMEM;
618
619 init_uobj(uobj, 0, file->ucontext, &mr_lock_key);
620 down_write(&uobj->mutex);
621
622 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
623 if (!pd) {
624 ret = -EINVAL;
625 goto err_free;
626 }
627
628 mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
629 cmd.access_flags, &udata);
630 if (IS_ERR(mr)) {
631 ret = PTR_ERR(mr);
632 goto err_put;
633 }
634
635 mr->device = pd->device;
636 mr->pd = pd;
637 mr->uobject = uobj;
638 atomic_inc(&pd->usecnt);
639 atomic_set(&mr->usecnt, 0);
640
641 uobj->object = mr;
642 ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj);
643 if (ret)
644 goto err_unreg;
645
646 memset(&resp, 0, sizeof resp);
647 resp.lkey = mr->lkey;
648 resp.rkey = mr->rkey;
649 resp.mr_handle = uobj->id;
650
651 if (copy_to_user((void __user *) (unsigned long) cmd.response,
652 &resp, sizeof resp)) {
653 ret = -EFAULT;
654 goto err_copy;
655 }
656
657 put_pd_read(pd);
658
659 mutex_lock(&file->mutex);
660 list_add_tail(&uobj->list, &file->ucontext->mr_list);
661 mutex_unlock(&file->mutex);
662
663 uobj->live = 1;
664
665 up_write(&uobj->mutex);
666
667 return in_len;
668
669err_copy:
670 idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
671
672err_unreg:
673 ib_dereg_mr(mr);
674
675err_put:
676 put_pd_read(pd);
677
678err_free:
679 put_uobj_write(uobj);
680 return ret;
681}
682
683ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
684 const char __user *buf, int in_len,
685 int out_len)
686{
687 struct ib_uverbs_dereg_mr cmd;
688 struct ib_mr *mr;
689 struct ib_uobject *uobj;
690 int ret = -EINVAL;
691
692 if (copy_from_user(&cmd, buf, sizeof cmd))
693 return -EFAULT;
694
695 uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext);
696 if (!uobj)
697 return -EINVAL;
698
699 mr = uobj->object;
700
701 ret = ib_dereg_mr(mr);
702 if (!ret)
703 uobj->live = 0;
704
705 put_uobj_write(uobj);
706
707 if (ret)
708 return ret;
709
710 idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
711
712 mutex_lock(&file->mutex);
713 list_del(&uobj->list);
714 mutex_unlock(&file->mutex);
715
716 put_uobj(uobj);
717
718 return in_len;
719}
720
721ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
722 const char __user *buf, int in_len,
723 int out_len)
724{
725 struct ib_uverbs_create_comp_channel cmd;
726 struct ib_uverbs_create_comp_channel_resp resp;
727 struct file *filp;
728 int ret;
729
730 if (out_len < sizeof resp)
731 return -ENOSPC;
732
733 if (copy_from_user(&cmd, buf, sizeof cmd))
734 return -EFAULT;
735
736 ret = get_unused_fd();
737 if (ret < 0)
738 return ret;
739 resp.fd = ret;
740
741 filp = ib_uverbs_alloc_event_file(file, 0);
742 if (IS_ERR(filp)) {
743 put_unused_fd(resp.fd);
744 return PTR_ERR(filp);
745 }
746
747 if (copy_to_user((void __user *) (unsigned long) cmd.response,
748 &resp, sizeof resp)) {
749 put_unused_fd(resp.fd);
750 fput(filp);
751 return -EFAULT;
752 }
753
754 fd_install(resp.fd, filp);
755 return in_len;
756}
757
758ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
759 const char __user *buf, int in_len,
760 int out_len)
761{
762 struct ib_uverbs_create_cq cmd;
763 struct ib_uverbs_create_cq_resp resp;
764 struct ib_udata udata;
765 struct ib_ucq_object *obj;
766 struct ib_uverbs_event_file *ev_file = NULL;
767 struct ib_cq *cq;
768 int ret;
769
770 if (out_len < sizeof resp)
771 return -ENOSPC;
772
773 if (copy_from_user(&cmd, buf, sizeof cmd))
774 return -EFAULT;
775
776 INIT_UDATA(&udata, buf + sizeof cmd,
777 (unsigned long) cmd.response + sizeof resp,
778 in_len - sizeof cmd, out_len - sizeof resp);
779
780 if (cmd.comp_vector >= file->device->num_comp_vectors)
781 return -EINVAL;
782
783 obj = kmalloc(sizeof *obj, GFP_KERNEL);
784 if (!obj)
785 return -ENOMEM;
786
787 init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &cq_lock_key);
788 down_write(&obj->uobject.mutex);
789
790 if (cmd.comp_channel >= 0) {
791 ev_file = ib_uverbs_lookup_comp_file(cmd.comp_channel);
792 if (!ev_file) {
793 ret = -EINVAL;
794 goto err;
795 }
796 }
797
798 obj->uverbs_file = file;
799 obj->comp_events_reported = 0;
800 obj->async_events_reported = 0;
801 INIT_LIST_HEAD(&obj->comp_list);
802 INIT_LIST_HEAD(&obj->async_list);
803
804 cq = file->device->ib_dev->create_cq(file->device->ib_dev, cmd.cqe,
805 cmd.comp_vector,
806 file->ucontext, &udata);
807 if (IS_ERR(cq)) {
808 ret = PTR_ERR(cq);
809 goto err_file;
810 }
811
812 cq->device = file->device->ib_dev;
813 cq->uobject = &obj->uobject;
814 cq->comp_handler = ib_uverbs_comp_handler;
815 cq->event_handler = ib_uverbs_cq_event_handler;
816 cq->cq_context = ev_file;
817 atomic_set(&cq->usecnt, 0);
818
819 obj->uobject.object = cq;
820 ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject);
821 if (ret)
822 goto err_free;
823
824 memset(&resp, 0, sizeof resp);
825 resp.cq_handle = obj->uobject.id;
826 resp.cqe = cq->cqe;
827
828 if (copy_to_user((void __user *) (unsigned long) cmd.response,
829 &resp, sizeof resp)) {
830 ret = -EFAULT;
831 goto err_copy;
832 }
833
834 mutex_lock(&file->mutex);
835 list_add_tail(&obj->uobject.list, &file->ucontext->cq_list);
836 mutex_unlock(&file->mutex);
837
838 obj->uobject.live = 1;
839
840 up_write(&obj->uobject.mutex);
841
842 return in_len;
843
844err_copy:
845 idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject);
846
847err_free:
848 ib_destroy_cq(cq);
849
850err_file:
851 if (ev_file)
852 ib_uverbs_release_ucq(file, ev_file, obj);
853
854err:
855 put_uobj_write(&obj->uobject);
856 return ret;
857}
858
859ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
860 const char __user *buf, int in_len,
861 int out_len)
862{
863 struct ib_uverbs_resize_cq cmd;
864 struct ib_uverbs_resize_cq_resp resp;
865 struct ib_udata udata;
866 struct ib_cq *cq;
867 int ret = -EINVAL;
868
869 if (copy_from_user(&cmd, buf, sizeof cmd))
870 return -EFAULT;
871
872 INIT_UDATA(&udata, buf + sizeof cmd,
873 (unsigned long) cmd.response + sizeof resp,
874 in_len - sizeof cmd, out_len - sizeof resp);
875
876 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
877 if (!cq)
878 return -EINVAL;
879
880 ret = cq->device->resize_cq(cq, cmd.cqe, &udata);
881 if (ret)
882 goto out;
883
884 resp.cqe = cq->cqe;
885
886 if (copy_to_user((void __user *) (unsigned long) cmd.response,
887 &resp, sizeof resp.cqe))
888 ret = -EFAULT;
889
890out:
891 put_cq_read(cq);
892
893 return ret ? ret : in_len;
894}
895
896static int copy_wc_to_user(void __user *dest, struct ib_wc *wc)
897{
898 struct ib_uverbs_wc tmp;
899
900 tmp.wr_id = wc->wr_id;
901 tmp.status = wc->status;
902 tmp.opcode = wc->opcode;
903 tmp.vendor_err = wc->vendor_err;
904 tmp.byte_len = wc->byte_len;
905 tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data;
906 tmp.qp_num = wc->qp->qp_num;
907 tmp.src_qp = wc->src_qp;
908 tmp.wc_flags = wc->wc_flags;
909 tmp.pkey_index = wc->pkey_index;
910 tmp.slid = wc->slid;
911 tmp.sl = wc->sl;
912 tmp.dlid_path_bits = wc->dlid_path_bits;
913 tmp.port_num = wc->port_num;
914 tmp.reserved = 0;
915
916 if (copy_to_user(dest, &tmp, sizeof tmp))
917 return -EFAULT;
918
919 return 0;
920}
921
922ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
923 const char __user *buf, int in_len,
924 int out_len)
925{
926 struct ib_uverbs_poll_cq cmd;
927 struct ib_uverbs_poll_cq_resp resp;
928 u8 __user *header_ptr;
929 u8 __user *data_ptr;
930 struct ib_cq *cq;
931 struct ib_wc wc;
932 int ret;
933
934 if (copy_from_user(&cmd, buf, sizeof cmd))
935 return -EFAULT;
936
937 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
938 if (!cq)
939 return -EINVAL;
940
941 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
942 header_ptr = (void __user *)(unsigned long) cmd.response;
943 data_ptr = header_ptr + sizeof resp;
944
945 memset(&resp, 0, sizeof resp);
946 while (resp.count < cmd.ne) {
947 ret = ib_poll_cq(cq, 1, &wc);
948 if (ret < 0)
949 goto out_put;
950 if (!ret)
951 break;
952
953 ret = copy_wc_to_user(data_ptr, &wc);
954 if (ret)
955 goto out_put;
956
957 data_ptr += sizeof(struct ib_uverbs_wc);
958 ++resp.count;
959 }
960
961 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
962 ret = -EFAULT;
963 goto out_put;
964 }
965
966 ret = in_len;
967
968out_put:
969 put_cq_read(cq);
970 return ret;
971}
972
973ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
974 const char __user *buf, int in_len,
975 int out_len)
976{
977 struct ib_uverbs_req_notify_cq cmd;
978 struct ib_cq *cq;
979
980 if (copy_from_user(&cmd, buf, sizeof cmd))
981 return -EFAULT;
982
983 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
984 if (!cq)
985 return -EINVAL;
986
987 ib_req_notify_cq(cq, cmd.solicited_only ?
988 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
989
990 put_cq_read(cq);
991
992 return in_len;
993}
994
995ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
996 const char __user *buf, int in_len,
997 int out_len)
998{
999 struct ib_uverbs_destroy_cq cmd;
1000 struct ib_uverbs_destroy_cq_resp resp;
1001 struct ib_uobject *uobj;
1002 struct ib_cq *cq;
1003 struct ib_ucq_object *obj;
1004 struct ib_uverbs_event_file *ev_file;
1005 int ret = -EINVAL;
1006
1007 if (copy_from_user(&cmd, buf, sizeof cmd))
1008 return -EFAULT;
1009
1010 uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext);
1011 if (!uobj)
1012 return -EINVAL;
1013 cq = uobj->object;
1014 ev_file = cq->cq_context;
1015 obj = container_of(cq->uobject, struct ib_ucq_object, uobject);
1016
1017 ret = ib_destroy_cq(cq);
1018 if (!ret)
1019 uobj->live = 0;
1020
1021 put_uobj_write(uobj);
1022
1023 if (ret)
1024 return ret;
1025
1026 idr_remove_uobj(&ib_uverbs_cq_idr, uobj);
1027
1028 mutex_lock(&file->mutex);
1029 list_del(&uobj->list);
1030 mutex_unlock(&file->mutex);
1031
1032 ib_uverbs_release_ucq(file, ev_file, obj);
1033
1034 memset(&resp, 0, sizeof resp);
1035 resp.comp_events_reported = obj->comp_events_reported;
1036 resp.async_events_reported = obj->async_events_reported;
1037
1038 put_uobj(uobj);
1039
1040 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1041 &resp, sizeof resp))
1042 return -EFAULT;
1043
1044 return in_len;
1045}
1046
1047ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
1048 const char __user *buf, int in_len,
1049 int out_len)
1050{
1051 struct ib_uverbs_create_qp cmd;
1052 struct ib_uverbs_create_qp_resp resp;
1053 struct ib_udata udata;
1054 struct ib_uqp_object *obj;
1055 struct ib_pd *pd;
1056 struct ib_cq *scq, *rcq;
1057 struct ib_srq *srq;
1058 struct ib_qp *qp;
1059 struct ib_qp_init_attr attr;
1060 int ret;
1061
1062 if (out_len < sizeof resp)
1063 return -ENOSPC;
1064
1065 if (copy_from_user(&cmd, buf, sizeof cmd))
1066 return -EFAULT;
1067
1068 INIT_UDATA(&udata, buf + sizeof cmd,
1069 (unsigned long) cmd.response + sizeof resp,
1070 in_len - sizeof cmd, out_len - sizeof resp);
1071
1072 obj = kmalloc(sizeof *obj, GFP_KERNEL);
1073 if (!obj)
1074 return -ENOMEM;
1075
1076 init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_key);
1077 down_write(&obj->uevent.uobject.mutex);
1078
1079 srq = cmd.is_srq ? idr_read_srq(cmd.srq_handle, file->ucontext) : NULL;
1080 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
1081 scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, 0);
1082 rcq = cmd.recv_cq_handle == cmd.send_cq_handle ?
1083 scq : idr_read_cq(cmd.recv_cq_handle, file->ucontext, 1);
1084
1085 if (!pd || !scq || !rcq || (cmd.is_srq && !srq)) {
1086 ret = -EINVAL;
1087 goto err_put;
1088 }
1089
1090 attr.event_handler = ib_uverbs_qp_event_handler;
1091 attr.qp_context = file;
1092 attr.send_cq = scq;
1093 attr.recv_cq = rcq;
1094 attr.srq = srq;
1095 attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
1096 attr.qp_type = cmd.qp_type;
1097 attr.create_flags = 0;
1098
1099 attr.cap.max_send_wr = cmd.max_send_wr;
1100 attr.cap.max_recv_wr = cmd.max_recv_wr;
1101 attr.cap.max_send_sge = cmd.max_send_sge;
1102 attr.cap.max_recv_sge = cmd.max_recv_sge;
1103 attr.cap.max_inline_data = cmd.max_inline_data;
1104
1105 obj->uevent.events_reported = 0;
1106 INIT_LIST_HEAD(&obj->uevent.event_list);
1107 INIT_LIST_HEAD(&obj->mcast_list);
1108
1109 qp = pd->device->create_qp(pd, &attr, &udata);
1110 if (IS_ERR(qp)) {
1111 ret = PTR_ERR(qp);
1112 goto err_put;
1113 }
1114
1115 qp->device = pd->device;
1116 qp->pd = pd;
1117 qp->send_cq = attr.send_cq;
1118 qp->recv_cq = attr.recv_cq;
1119 qp->srq = attr.srq;
1120 qp->uobject = &obj->uevent.uobject;
1121 qp->event_handler = attr.event_handler;
1122 qp->qp_context = attr.qp_context;
1123 qp->qp_type = attr.qp_type;
1124 atomic_inc(&pd->usecnt);
1125 atomic_inc(&attr.send_cq->usecnt);
1126 atomic_inc(&attr.recv_cq->usecnt);
1127 if (attr.srq)
1128 atomic_inc(&attr.srq->usecnt);
1129
1130 obj->uevent.uobject.object = qp;
1131 ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
1132 if (ret)
1133 goto err_destroy;
1134
1135 memset(&resp, 0, sizeof resp);
1136 resp.qpn = qp->qp_num;
1137 resp.qp_handle = obj->uevent.uobject.id;
1138 resp.max_recv_sge = attr.cap.max_recv_sge;
1139 resp.max_send_sge = attr.cap.max_send_sge;
1140 resp.max_recv_wr = attr.cap.max_recv_wr;
1141 resp.max_send_wr = attr.cap.max_send_wr;
1142 resp.max_inline_data = attr.cap.max_inline_data;
1143
1144 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1145 &resp, sizeof resp)) {
1146 ret = -EFAULT;
1147 goto err_copy;
1148 }
1149
1150 put_pd_read(pd);
1151 put_cq_read(scq);
1152 if (rcq != scq)
1153 put_cq_read(rcq);
1154 if (srq)
1155 put_srq_read(srq);
1156
1157 mutex_lock(&file->mutex);
1158 list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list);
1159 mutex_unlock(&file->mutex);
1160
1161 obj->uevent.uobject.live = 1;
1162
1163 up_write(&obj->uevent.uobject.mutex);
1164
1165 return in_len;
1166
1167err_copy:
1168 idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
1169
1170err_destroy:
1171 ib_destroy_qp(qp);
1172
1173err_put:
1174 if (pd)
1175 put_pd_read(pd);
1176 if (scq)
1177 put_cq_read(scq);
1178 if (rcq && rcq != scq)
1179 put_cq_read(rcq);
1180 if (srq)
1181 put_srq_read(srq);
1182
1183 put_uobj_write(&obj->uevent.uobject);
1184 return ret;
1185}
1186
1187ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
1188 const char __user *buf, int in_len,
1189 int out_len)
1190{
1191 struct ib_uverbs_query_qp cmd;
1192 struct ib_uverbs_query_qp_resp resp;
1193 struct ib_qp *qp;
1194 struct ib_qp_attr *attr;
1195 struct ib_qp_init_attr *init_attr;
1196 int ret;
1197
1198 if (copy_from_user(&cmd, buf, sizeof cmd))
1199 return -EFAULT;
1200
1201 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1202 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1203 if (!attr || !init_attr) {
1204 ret = -ENOMEM;
1205 goto out;
1206 }
1207
1208 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1209 if (!qp) {
1210 ret = -EINVAL;
1211 goto out;
1212 }
1213
1214 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1215
1216 put_qp_read(qp);
1217
1218 if (ret)
1219 goto out;
1220
1221 memset(&resp, 0, sizeof resp);
1222
1223 resp.qp_state = attr->qp_state;
1224 resp.cur_qp_state = attr->cur_qp_state;
1225 resp.path_mtu = attr->path_mtu;
1226 resp.path_mig_state = attr->path_mig_state;
1227 resp.qkey = attr->qkey;
1228 resp.rq_psn = attr->rq_psn;
1229 resp.sq_psn = attr->sq_psn;
1230 resp.dest_qp_num = attr->dest_qp_num;
1231 resp.qp_access_flags = attr->qp_access_flags;
1232 resp.pkey_index = attr->pkey_index;
1233 resp.alt_pkey_index = attr->alt_pkey_index;
1234 resp.sq_draining = attr->sq_draining;
1235 resp.max_rd_atomic = attr->max_rd_atomic;
1236 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1237 resp.min_rnr_timer = attr->min_rnr_timer;
1238 resp.port_num = attr->port_num;
1239 resp.timeout = attr->timeout;
1240 resp.retry_cnt = attr->retry_cnt;
1241 resp.rnr_retry = attr->rnr_retry;
1242 resp.alt_port_num = attr->alt_port_num;
1243 resp.alt_timeout = attr->alt_timeout;
1244
1245 memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16);
1246 resp.dest.flow_label = attr->ah_attr.grh.flow_label;
1247 resp.dest.sgid_index = attr->ah_attr.grh.sgid_index;
1248 resp.dest.hop_limit = attr->ah_attr.grh.hop_limit;
1249 resp.dest.traffic_class = attr->ah_attr.grh.traffic_class;
1250 resp.dest.dlid = attr->ah_attr.dlid;
1251 resp.dest.sl = attr->ah_attr.sl;
1252 resp.dest.src_path_bits = attr->ah_attr.src_path_bits;
1253 resp.dest.static_rate = attr->ah_attr.static_rate;
1254 resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH);
1255 resp.dest.port_num = attr->ah_attr.port_num;
1256
1257 memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16);
1258 resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label;
1259 resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index;
1260 resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit;
1261 resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class;
1262 resp.alt_dest.dlid = attr->alt_ah_attr.dlid;
1263 resp.alt_dest.sl = attr->alt_ah_attr.sl;
1264 resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits;
1265 resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate;
1266 resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH);
1267 resp.alt_dest.port_num = attr->alt_ah_attr.port_num;
1268
1269 resp.max_send_wr = init_attr->cap.max_send_wr;
1270 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1271 resp.max_send_sge = init_attr->cap.max_send_sge;
1272 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1273 resp.max_inline_data = init_attr->cap.max_inline_data;
1274 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1275
1276 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1277 &resp, sizeof resp))
1278 ret = -EFAULT;
1279
1280out:
1281 kfree(attr);
1282 kfree(init_attr);
1283
1284 return ret ? ret : in_len;
1285}
1286
1287ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
1288 const char __user *buf, int in_len,
1289 int out_len)
1290{
1291 struct ib_uverbs_modify_qp cmd;
1292 struct ib_udata udata;
1293 struct ib_qp *qp;
1294 struct ib_qp_attr *attr;
1295 int ret;
1296
1297 if (copy_from_user(&cmd, buf, sizeof cmd))
1298 return -EFAULT;
1299
1300 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
1301 out_len);
1302
1303 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1304 if (!attr)
1305 return -ENOMEM;
1306
1307 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1308 if (!qp) {
1309 ret = -EINVAL;
1310 goto out;
1311 }
1312
1313 attr->qp_state = cmd.qp_state;
1314 attr->cur_qp_state = cmd.cur_qp_state;
1315 attr->path_mtu = cmd.path_mtu;
1316 attr->path_mig_state = cmd.path_mig_state;
1317 attr->qkey = cmd.qkey;
1318 attr->rq_psn = cmd.rq_psn;
1319 attr->sq_psn = cmd.sq_psn;
1320 attr->dest_qp_num = cmd.dest_qp_num;
1321 attr->qp_access_flags = cmd.qp_access_flags;
1322 attr->pkey_index = cmd.pkey_index;
1323 attr->alt_pkey_index = cmd.alt_pkey_index;
1324 attr->en_sqd_async_notify = cmd.en_sqd_async_notify;
1325 attr->max_rd_atomic = cmd.max_rd_atomic;
1326 attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic;
1327 attr->min_rnr_timer = cmd.min_rnr_timer;
1328 attr->port_num = cmd.port_num;
1329 attr->timeout = cmd.timeout;
1330 attr->retry_cnt = cmd.retry_cnt;
1331 attr->rnr_retry = cmd.rnr_retry;
1332 attr->alt_port_num = cmd.alt_port_num;
1333 attr->alt_timeout = cmd.alt_timeout;
1334
1335 memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16);
1336 attr->ah_attr.grh.flow_label = cmd.dest.flow_label;
1337 attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index;
1338 attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit;
1339 attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class;
1340 attr->ah_attr.dlid = cmd.dest.dlid;
1341 attr->ah_attr.sl = cmd.dest.sl;
1342 attr->ah_attr.src_path_bits = cmd.dest.src_path_bits;
1343 attr->ah_attr.static_rate = cmd.dest.static_rate;
1344 attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0;
1345 attr->ah_attr.port_num = cmd.dest.port_num;
1346
1347 memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16);
1348 attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label;
1349 attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index;
1350 attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit;
1351 attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class;
1352 attr->alt_ah_attr.dlid = cmd.alt_dest.dlid;
1353 attr->alt_ah_attr.sl = cmd.alt_dest.sl;
1354 attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits;
1355 attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate;
1356 attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0;
1357 attr->alt_ah_attr.port_num = cmd.alt_dest.port_num;
1358
1359 ret = qp->device->modify_qp(qp, attr, cmd.attr_mask, &udata);
1360
1361 put_qp_read(qp);
1362
1363 if (ret)
1364 goto out;
1365
1366 ret = in_len;
1367
1368out:
1369 kfree(attr);
1370
1371 return ret;
1372}
1373
1374ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
1375 const char __user *buf, int in_len,
1376 int out_len)
1377{
1378 struct ib_uverbs_destroy_qp cmd;
1379 struct ib_uverbs_destroy_qp_resp resp;
1380 struct ib_uobject *uobj;
1381 struct ib_qp *qp;
1382 struct ib_uqp_object *obj;
1383 int ret = -EINVAL;
1384
1385 if (copy_from_user(&cmd, buf, sizeof cmd))
1386 return -EFAULT;
1387
1388 memset(&resp, 0, sizeof resp);
1389
1390 uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext);
1391 if (!uobj)
1392 return -EINVAL;
1393 qp = uobj->object;
1394 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
1395
1396 if (!list_empty(&obj->mcast_list)) {
1397 put_uobj_write(uobj);
1398 return -EBUSY;
1399 }
1400
1401 ret = ib_destroy_qp(qp);
1402 if (!ret)
1403 uobj->live = 0;
1404
1405 put_uobj_write(uobj);
1406
1407 if (ret)
1408 return ret;
1409
1410 idr_remove_uobj(&ib_uverbs_qp_idr, uobj);
1411
1412 mutex_lock(&file->mutex);
1413 list_del(&uobj->list);
1414 mutex_unlock(&file->mutex);
1415
1416 ib_uverbs_release_uevent(file, &obj->uevent);
1417
1418 resp.events_reported = obj->uevent.events_reported;
1419
1420 put_uobj(uobj);
1421
1422 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1423 &resp, sizeof resp))
1424 return -EFAULT;
1425
1426 return in_len;
1427}
1428
1429ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
1430 const char __user *buf, int in_len,
1431 int out_len)
1432{
1433 struct ib_uverbs_post_send cmd;
1434 struct ib_uverbs_post_send_resp resp;
1435 struct ib_uverbs_send_wr *user_wr;
1436 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
1437 struct ib_qp *qp;
1438 int i, sg_ind;
1439 int is_ud;
1440 ssize_t ret = -EINVAL;
1441
1442 if (copy_from_user(&cmd, buf, sizeof cmd))
1443 return -EFAULT;
1444
1445 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
1446 cmd.sge_count * sizeof (struct ib_uverbs_sge))
1447 return -EINVAL;
1448
1449 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
1450 return -EINVAL;
1451
1452 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
1453 if (!user_wr)
1454 return -ENOMEM;
1455
1456 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1457 if (!qp)
1458 goto out;
1459
1460 is_ud = qp->qp_type == IB_QPT_UD;
1461 sg_ind = 0;
1462 last = NULL;
1463 for (i = 0; i < cmd.wr_count; ++i) {
1464 if (copy_from_user(user_wr,
1465 buf + sizeof cmd + i * cmd.wqe_size,
1466 cmd.wqe_size)) {
1467 ret = -EFAULT;
1468 goto out_put;
1469 }
1470
1471 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
1472 ret = -EINVAL;
1473 goto out_put;
1474 }
1475
1476 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
1477 user_wr->num_sge * sizeof (struct ib_sge),
1478 GFP_KERNEL);
1479 if (!next) {
1480 ret = -ENOMEM;
1481 goto out_put;
1482 }
1483
1484 if (!last)
1485 wr = next;
1486 else
1487 last->next = next;
1488 last = next;
1489
1490 next->next = NULL;
1491 next->wr_id = user_wr->wr_id;
1492 next->num_sge = user_wr->num_sge;
1493 next->opcode = user_wr->opcode;
1494 next->send_flags = user_wr->send_flags;
1495
1496 if (is_ud) {
1497 next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah,
1498 file->ucontext);
1499 if (!next->wr.ud.ah) {
1500 ret = -EINVAL;
1501 goto out_put;
1502 }
1503 next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn;
1504 next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey;
1505 } else {
1506 switch (next->opcode) {
1507 case IB_WR_RDMA_WRITE_WITH_IMM:
1508 next->ex.imm_data =
1509 (__be32 __force) user_wr->ex.imm_data;
1510 case IB_WR_RDMA_WRITE:
1511 case IB_WR_RDMA_READ:
1512 next->wr.rdma.remote_addr =
1513 user_wr->wr.rdma.remote_addr;
1514 next->wr.rdma.rkey =
1515 user_wr->wr.rdma.rkey;
1516 break;
1517 case IB_WR_SEND_WITH_IMM:
1518 next->ex.imm_data =
1519 (__be32 __force) user_wr->ex.imm_data;
1520 break;
1521 case IB_WR_SEND_WITH_INV:
1522 next->ex.invalidate_rkey =
1523 user_wr->ex.invalidate_rkey;
1524 break;
1525 case IB_WR_ATOMIC_CMP_AND_SWP:
1526 case IB_WR_ATOMIC_FETCH_AND_ADD:
1527 next->wr.atomic.remote_addr =
1528 user_wr->wr.atomic.remote_addr;
1529 next->wr.atomic.compare_add =
1530 user_wr->wr.atomic.compare_add;
1531 next->wr.atomic.swap = user_wr->wr.atomic.swap;
1532 next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
1533 break;
1534 default:
1535 break;
1536 }
1537 }
1538
1539 if (next->num_sge) {
1540 next->sg_list = (void *) next +
1541 ALIGN(sizeof *next, sizeof (struct ib_sge));
1542 if (copy_from_user(next->sg_list,
1543 buf + sizeof cmd +
1544 cmd.wr_count * cmd.wqe_size +
1545 sg_ind * sizeof (struct ib_sge),
1546 next->num_sge * sizeof (struct ib_sge))) {
1547 ret = -EFAULT;
1548 goto out_put;
1549 }
1550 sg_ind += next->num_sge;
1551 } else
1552 next->sg_list = NULL;
1553 }
1554
1555 resp.bad_wr = 0;
1556 ret = qp->device->post_send(qp, wr, &bad_wr);
1557 if (ret)
1558 for (next = wr; next; next = next->next) {
1559 ++resp.bad_wr;
1560 if (next == bad_wr)
1561 break;
1562 }
1563
1564 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1565 &resp, sizeof resp))
1566 ret = -EFAULT;
1567
1568out_put:
1569 put_qp_read(qp);
1570
1571 while (wr) {
1572 if (is_ud && wr->wr.ud.ah)
1573 put_ah_read(wr->wr.ud.ah);
1574 next = wr->next;
1575 kfree(wr);
1576 wr = next;
1577 }
1578
1579out:
1580 kfree(user_wr);
1581
1582 return ret ? ret : in_len;
1583}
1584
1585static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
1586 int in_len,
1587 u32 wr_count,
1588 u32 sge_count,
1589 u32 wqe_size)
1590{
1591 struct ib_uverbs_recv_wr *user_wr;
1592 struct ib_recv_wr *wr = NULL, *last, *next;
1593 int sg_ind;
1594 int i;
1595 int ret;
1596
1597 if (in_len < wqe_size * wr_count +
1598 sge_count * sizeof (struct ib_uverbs_sge))
1599 return ERR_PTR(-EINVAL);
1600
1601 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
1602 return ERR_PTR(-EINVAL);
1603
1604 user_wr = kmalloc(wqe_size, GFP_KERNEL);
1605 if (!user_wr)
1606 return ERR_PTR(-ENOMEM);
1607
1608 sg_ind = 0;
1609 last = NULL;
1610 for (i = 0; i < wr_count; ++i) {
1611 if (copy_from_user(user_wr, buf + i * wqe_size,
1612 wqe_size)) {
1613 ret = -EFAULT;
1614 goto err;
1615 }
1616
1617 if (user_wr->num_sge + sg_ind > sge_count) {
1618 ret = -EINVAL;
1619 goto err;
1620 }
1621
1622 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
1623 user_wr->num_sge * sizeof (struct ib_sge),
1624 GFP_KERNEL);
1625 if (!next) {
1626 ret = -ENOMEM;
1627 goto err;
1628 }
1629
1630 if (!last)
1631 wr = next;
1632 else
1633 last->next = next;
1634 last = next;
1635
1636 next->next = NULL;
1637 next->wr_id = user_wr->wr_id;
1638 next->num_sge = user_wr->num_sge;
1639
1640 if (next->num_sge) {
1641 next->sg_list = (void *) next +
1642 ALIGN(sizeof *next, sizeof (struct ib_sge));
1643 if (copy_from_user(next->sg_list,
1644 buf + wr_count * wqe_size +
1645 sg_ind * sizeof (struct ib_sge),
1646 next->num_sge * sizeof (struct ib_sge))) {
1647 ret = -EFAULT;
1648 goto err;
1649 }
1650 sg_ind += next->num_sge;
1651 } else
1652 next->sg_list = NULL;
1653 }
1654
1655 kfree(user_wr);
1656 return wr;
1657
1658err:
1659 kfree(user_wr);
1660
1661 while (wr) {
1662 next = wr->next;
1663 kfree(wr);
1664 wr = next;
1665 }
1666
1667 return ERR_PTR(ret);
1668}
1669
1670ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
1671 const char __user *buf, int in_len,
1672 int out_len)
1673{
1674 struct ib_uverbs_post_recv cmd;
1675 struct ib_uverbs_post_recv_resp resp;
1676 struct ib_recv_wr *wr, *next, *bad_wr;
1677 struct ib_qp *qp;
1678 ssize_t ret = -EINVAL;
1679
1680 if (copy_from_user(&cmd, buf, sizeof cmd))
1681 return -EFAULT;
1682
1683 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
1684 in_len - sizeof cmd, cmd.wr_count,
1685 cmd.sge_count, cmd.wqe_size);
1686 if (IS_ERR(wr))
1687 return PTR_ERR(wr);
1688
1689 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1690 if (!qp)
1691 goto out;
1692
1693 resp.bad_wr = 0;
1694 ret = qp->device->post_recv(qp, wr, &bad_wr);
1695
1696 put_qp_read(qp);
1697
1698 if (ret)
1699 for (next = wr; next; next = next->next) {
1700 ++resp.bad_wr;
1701 if (next == bad_wr)
1702 break;
1703 }
1704
1705 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1706 &resp, sizeof resp))
1707 ret = -EFAULT;
1708
1709out:
1710 while (wr) {
1711 next = wr->next;
1712 kfree(wr);
1713 wr = next;
1714 }
1715
1716 return ret ? ret : in_len;
1717}
1718
1719ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
1720 const char __user *buf, int in_len,
1721 int out_len)
1722{
1723 struct ib_uverbs_post_srq_recv cmd;
1724 struct ib_uverbs_post_srq_recv_resp resp;
1725 struct ib_recv_wr *wr, *next, *bad_wr;
1726 struct ib_srq *srq;
1727 ssize_t ret = -EINVAL;
1728
1729 if (copy_from_user(&cmd, buf, sizeof cmd))
1730 return -EFAULT;
1731
1732 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
1733 in_len - sizeof cmd, cmd.wr_count,
1734 cmd.sge_count, cmd.wqe_size);
1735 if (IS_ERR(wr))
1736 return PTR_ERR(wr);
1737
1738 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
1739 if (!srq)
1740 goto out;
1741
1742 resp.bad_wr = 0;
1743 ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
1744
1745 put_srq_read(srq);
1746
1747 if (ret)
1748 for (next = wr; next; next = next->next) {
1749 ++resp.bad_wr;
1750 if (next == bad_wr)
1751 break;
1752 }
1753
1754 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1755 &resp, sizeof resp))
1756 ret = -EFAULT;
1757
1758out:
1759 while (wr) {
1760 next = wr->next;
1761 kfree(wr);
1762 wr = next;
1763 }
1764
1765 return ret ? ret : in_len;
1766}
1767
1768ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
1769 const char __user *buf, int in_len,
1770 int out_len)
1771{
1772 struct ib_uverbs_create_ah cmd;
1773 struct ib_uverbs_create_ah_resp resp;
1774 struct ib_uobject *uobj;
1775 struct ib_pd *pd;
1776 struct ib_ah *ah;
1777 struct ib_ah_attr attr;
1778 int ret;
1779
1780 if (out_len < sizeof resp)
1781 return -ENOSPC;
1782
1783 if (copy_from_user(&cmd, buf, sizeof cmd))
1784 return -EFAULT;
1785
1786 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
1787 if (!uobj)
1788 return -ENOMEM;
1789
1790 init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_key);
1791 down_write(&uobj->mutex);
1792
1793 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
1794 if (!pd) {
1795 ret = -EINVAL;
1796 goto err;
1797 }
1798
1799 attr.dlid = cmd.attr.dlid;
1800 attr.sl = cmd.attr.sl;
1801 attr.src_path_bits = cmd.attr.src_path_bits;
1802 attr.static_rate = cmd.attr.static_rate;
1803 attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0;
1804 attr.port_num = cmd.attr.port_num;
1805 attr.grh.flow_label = cmd.attr.grh.flow_label;
1806 attr.grh.sgid_index = cmd.attr.grh.sgid_index;
1807 attr.grh.hop_limit = cmd.attr.grh.hop_limit;
1808 attr.grh.traffic_class = cmd.attr.grh.traffic_class;
1809 memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
1810
1811 ah = ib_create_ah(pd, &attr);
1812 if (IS_ERR(ah)) {
1813 ret = PTR_ERR(ah);
1814 goto err_put;
1815 }
1816
1817 ah->uobject = uobj;
1818 uobj->object = ah;
1819
1820 ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj);
1821 if (ret)
1822 goto err_destroy;
1823
1824 resp.ah_handle = uobj->id;
1825
1826 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1827 &resp, sizeof resp)) {
1828 ret = -EFAULT;
1829 goto err_copy;
1830 }
1831
1832 put_pd_read(pd);
1833
1834 mutex_lock(&file->mutex);
1835 list_add_tail(&uobj->list, &file->ucontext->ah_list);
1836 mutex_unlock(&file->mutex);
1837
1838 uobj->live = 1;
1839
1840 up_write(&uobj->mutex);
1841
1842 return in_len;
1843
1844err_copy:
1845 idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
1846
1847err_destroy:
1848 ib_destroy_ah(ah);
1849
1850err_put:
1851 put_pd_read(pd);
1852
1853err:
1854 put_uobj_write(uobj);
1855 return ret;
1856}
1857
1858ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
1859 const char __user *buf, int in_len, int out_len)
1860{
1861 struct ib_uverbs_destroy_ah cmd;
1862 struct ib_ah *ah;
1863 struct ib_uobject *uobj;
1864 int ret;
1865
1866 if (copy_from_user(&cmd, buf, sizeof cmd))
1867 return -EFAULT;
1868
1869 uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext);
1870 if (!uobj)
1871 return -EINVAL;
1872 ah = uobj->object;
1873
1874 ret = ib_destroy_ah(ah);
1875 if (!ret)
1876 uobj->live = 0;
1877
1878 put_uobj_write(uobj);
1879
1880 if (ret)
1881 return ret;
1882
1883 idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
1884
1885 mutex_lock(&file->mutex);
1886 list_del(&uobj->list);
1887 mutex_unlock(&file->mutex);
1888
1889 put_uobj(uobj);
1890
1891 return in_len;
1892}
1893
1894ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
1895 const char __user *buf, int in_len,
1896 int out_len)
1897{
1898 struct ib_uverbs_attach_mcast cmd;
1899 struct ib_qp *qp;
1900 struct ib_uqp_object *obj;
1901 struct ib_uverbs_mcast_entry *mcast;
1902 int ret;
1903
1904 if (copy_from_user(&cmd, buf, sizeof cmd))
1905 return -EFAULT;
1906
1907 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1908 if (!qp)
1909 return -EINVAL;
1910
1911 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
1912
1913 list_for_each_entry(mcast, &obj->mcast_list, list)
1914 if (cmd.mlid == mcast->lid &&
1915 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
1916 ret = 0;
1917 goto out_put;
1918 }
1919
1920 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
1921 if (!mcast) {
1922 ret = -ENOMEM;
1923 goto out_put;
1924 }
1925
1926 mcast->lid = cmd.mlid;
1927 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
1928
1929 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
1930 if (!ret)
1931 list_add_tail(&mcast->list, &obj->mcast_list);
1932 else
1933 kfree(mcast);
1934
1935out_put:
1936 put_qp_read(qp);
1937
1938 return ret ? ret : in_len;
1939}
1940
1941ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
1942 const char __user *buf, int in_len,
1943 int out_len)
1944{
1945 struct ib_uverbs_detach_mcast cmd;
1946 struct ib_uqp_object *obj;
1947 struct ib_qp *qp;
1948 struct ib_uverbs_mcast_entry *mcast;
1949 int ret = -EINVAL;
1950
1951 if (copy_from_user(&cmd, buf, sizeof cmd))
1952 return -EFAULT;
1953
1954 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
1955 if (!qp)
1956 return -EINVAL;
1957
1958 ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
1959 if (ret)
1960 goto out_put;
1961
1962 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
1963
1964 list_for_each_entry(mcast, &obj->mcast_list, list)
1965 if (cmd.mlid == mcast->lid &&
1966 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
1967 list_del(&mcast->list);
1968 kfree(mcast);
1969 break;
1970 }
1971
1972out_put:
1973 put_qp_read(qp);
1974
1975 return ret ? ret : in_len;
1976}
1977
1978ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
1979 const char __user *buf, int in_len,
1980 int out_len)
1981{
1982 struct ib_uverbs_create_srq cmd;
1983 struct ib_uverbs_create_srq_resp resp;
1984 struct ib_udata udata;
1985 struct ib_uevent_object *obj;
1986 struct ib_pd *pd;
1987 struct ib_srq *srq;
1988 struct ib_srq_init_attr attr;
1989 int ret;
1990
1991 if (out_len < sizeof resp)
1992 return -ENOSPC;
1993
1994 if (copy_from_user(&cmd, buf, sizeof cmd))
1995 return -EFAULT;
1996
1997 INIT_UDATA(&udata, buf + sizeof cmd,
1998 (unsigned long) cmd.response + sizeof resp,
1999 in_len - sizeof cmd, out_len - sizeof resp);
2000
2001 obj = kmalloc(sizeof *obj, GFP_KERNEL);
2002 if (!obj)
2003 return -ENOMEM;
2004
2005 init_uobj(&obj->uobject, cmd.user_handle, file->ucontext, &srq_lock_key);
2006 down_write(&obj->uobject.mutex);
2007
2008 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
2009 if (!pd) {
2010 ret = -EINVAL;
2011 goto err;
2012 }
2013
2014 attr.event_handler = ib_uverbs_srq_event_handler;
2015 attr.srq_context = file;
2016 attr.attr.max_wr = cmd.max_wr;
2017 attr.attr.max_sge = cmd.max_sge;
2018 attr.attr.srq_limit = cmd.srq_limit;
2019
2020 obj->events_reported = 0;
2021 INIT_LIST_HEAD(&obj->event_list);
2022
2023 srq = pd->device->create_srq(pd, &attr, &udata);
2024 if (IS_ERR(srq)) {
2025 ret = PTR_ERR(srq);
2026 goto err_put;
2027 }
2028
2029 srq->device = pd->device;
2030 srq->pd = pd;
2031 srq->uobject = &obj->uobject;
2032 srq->event_handler = attr.event_handler;
2033 srq->srq_context = attr.srq_context;
2034 atomic_inc(&pd->usecnt);
2035 atomic_set(&srq->usecnt, 0);
2036
2037 obj->uobject.object = srq;
2038 ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uobject);
2039 if (ret)
2040 goto err_destroy;
2041
2042 memset(&resp, 0, sizeof resp);
2043 resp.srq_handle = obj->uobject.id;
2044 resp.max_wr = attr.attr.max_wr;
2045 resp.max_sge = attr.attr.max_sge;
2046
2047 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2048 &resp, sizeof resp)) {
2049 ret = -EFAULT;
2050 goto err_copy;
2051 }
2052
2053 put_pd_read(pd);
2054
2055 mutex_lock(&file->mutex);
2056 list_add_tail(&obj->uobject.list, &file->ucontext->srq_list);
2057 mutex_unlock(&file->mutex);
2058
2059 obj->uobject.live = 1;
2060
2061 up_write(&obj->uobject.mutex);
2062
2063 return in_len;
2064
2065err_copy:
2066 idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uobject);
2067
2068err_destroy:
2069 ib_destroy_srq(srq);
2070
2071err_put:
2072 put_pd_read(pd);
2073
2074err:
2075 put_uobj_write(&obj->uobject);
2076 return ret;
2077}
2078
2079ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
2080 const char __user *buf, int in_len,
2081 int out_len)
2082{
2083 struct ib_uverbs_modify_srq cmd;
2084 struct ib_udata udata;
2085 struct ib_srq *srq;
2086 struct ib_srq_attr attr;
2087 int ret;
2088
2089 if (copy_from_user(&cmd, buf, sizeof cmd))
2090 return -EFAULT;
2091
2092 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
2093 out_len);
2094
2095 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
2096 if (!srq)
2097 return -EINVAL;
2098
2099 attr.max_wr = cmd.max_wr;
2100 attr.srq_limit = cmd.srq_limit;
2101
2102 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata);
2103
2104 put_srq_read(srq);
2105
2106 return ret ? ret : in_len;
2107}
2108
2109ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
2110 const char __user *buf,
2111 int in_len, int out_len)
2112{
2113 struct ib_uverbs_query_srq cmd;
2114 struct ib_uverbs_query_srq_resp resp;
2115 struct ib_srq_attr attr;
2116 struct ib_srq *srq;
2117 int ret;
2118
2119 if (out_len < sizeof resp)
2120 return -ENOSPC;
2121
2122 if (copy_from_user(&cmd, buf, sizeof cmd))
2123 return -EFAULT;
2124
2125 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
2126 if (!srq)
2127 return -EINVAL;
2128
2129 ret = ib_query_srq(srq, &attr);
2130
2131 put_srq_read(srq);
2132
2133 if (ret)
2134 return ret;
2135
2136 memset(&resp, 0, sizeof resp);
2137
2138 resp.max_wr = attr.max_wr;
2139 resp.max_sge = attr.max_sge;
2140 resp.srq_limit = attr.srq_limit;
2141
2142 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2143 &resp, sizeof resp))
2144 return -EFAULT;
2145
2146 return in_len;
2147}
2148
2149ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
2150 const char __user *buf, int in_len,
2151 int out_len)
2152{
2153 struct ib_uverbs_destroy_srq cmd;
2154 struct ib_uverbs_destroy_srq_resp resp;
2155 struct ib_uobject *uobj;
2156 struct ib_srq *srq;
2157 struct ib_uevent_object *obj;
2158 int ret = -EINVAL;
2159
2160 if (copy_from_user(&cmd, buf, sizeof cmd))
2161 return -EFAULT;
2162
2163 uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext);
2164 if (!uobj)
2165 return -EINVAL;
2166 srq = uobj->object;
2167 obj = container_of(uobj, struct ib_uevent_object, uobject);
2168
2169 ret = ib_destroy_srq(srq);
2170 if (!ret)
2171 uobj->live = 0;
2172
2173 put_uobj_write(uobj);
2174
2175 if (ret)
2176 return ret;
2177
2178 idr_remove_uobj(&ib_uverbs_srq_idr, uobj);
2179
2180 mutex_lock(&file->mutex);
2181 list_del(&uobj->list);
2182 mutex_unlock(&file->mutex);
2183
2184 ib_uverbs_release_uevent(file, obj);
2185
2186 memset(&resp, 0, sizeof resp);
2187 resp.events_reported = obj->events_reported;
2188
2189 put_uobj(uobj);
2190
2191 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2192 &resp, sizeof resp))
2193 ret = -EFAULT;
2194
2195 return ret ? ret : in_len;
2196}
1/*
2 * Copyright (c) 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
4 * Copyright (c) 2005 PathScale, Inc. All rights reserved.
5 * Copyright (c) 2006 Mellanox Technologies. All rights reserved.
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.
34 */
35
36#include <linux/file.h>
37#include <linux/fs.h>
38#include <linux/slab.h>
39#include <linux/sched.h>
40
41#include <linux/uaccess.h>
42
43#include <rdma/uverbs_types.h>
44#include <rdma/uverbs_std_types.h>
45#include "rdma_core.h"
46
47#include "uverbs.h"
48#include "core_priv.h"
49
50/*
51 * Copy a response to userspace. If the provided 'resp' is larger than the
52 * user buffer it is silently truncated. If the user provided a larger buffer
53 * then the trailing portion is zero filled.
54 *
55 * These semantics are intended to support future extension of the output
56 * structures.
57 */
58static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp,
59 size_t resp_len)
60{
61 int ret;
62
63 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
64 return uverbs_copy_to_struct_or_zero(
65 attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len);
66
67 if (copy_to_user(attrs->ucore.outbuf, resp,
68 min(attrs->ucore.outlen, resp_len)))
69 return -EFAULT;
70
71 if (resp_len < attrs->ucore.outlen) {
72 /*
73 * Zero fill any extra memory that user
74 * space might have provided.
75 */
76 ret = clear_user(attrs->ucore.outbuf + resp_len,
77 attrs->ucore.outlen - resp_len);
78 if (ret)
79 return -EFAULT;
80 }
81
82 return 0;
83}
84
85/*
86 * Copy a request from userspace. If the provided 'req' is larger than the
87 * user buffer then the user buffer is zero extended into the 'req'. If 'req'
88 * is smaller than the user buffer then the uncopied bytes in the user buffer
89 * must be zero.
90 */
91static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req,
92 size_t req_len)
93{
94 if (copy_from_user(req, attrs->ucore.inbuf,
95 min(attrs->ucore.inlen, req_len)))
96 return -EFAULT;
97
98 if (attrs->ucore.inlen < req_len) {
99 memset(req + attrs->ucore.inlen, 0,
100 req_len - attrs->ucore.inlen);
101 } else if (attrs->ucore.inlen > req_len) {
102 if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len,
103 attrs->ucore.inlen - req_len))
104 return -EOPNOTSUPP;
105 }
106 return 0;
107}
108
109/*
110 * Generate the value for the 'response_length' protocol used by write_ex.
111 * This is the number of bytes the kernel actually wrote. Userspace can use
112 * this to detect what structure members in the response the kernel
113 * understood.
114 */
115static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs,
116 size_t resp_len)
117{
118 return min_t(size_t, attrs->ucore.outlen, resp_len);
119}
120
121/*
122 * The iterator version of the request interface is for handlers that need to
123 * step over a flex array at the end of a command header.
124 */
125struct uverbs_req_iter {
126 const void __user *cur;
127 const void __user *end;
128};
129
130static int uverbs_request_start(struct uverbs_attr_bundle *attrs,
131 struct uverbs_req_iter *iter,
132 void *req,
133 size_t req_len)
134{
135 if (attrs->ucore.inlen < req_len)
136 return -ENOSPC;
137
138 if (copy_from_user(req, attrs->ucore.inbuf, req_len))
139 return -EFAULT;
140
141 iter->cur = attrs->ucore.inbuf + req_len;
142 iter->end = attrs->ucore.inbuf + attrs->ucore.inlen;
143 return 0;
144}
145
146static int uverbs_request_next(struct uverbs_req_iter *iter, void *val,
147 size_t len)
148{
149 if (iter->cur + len > iter->end)
150 return -ENOSPC;
151
152 if (copy_from_user(val, iter->cur, len))
153 return -EFAULT;
154
155 iter->cur += len;
156 return 0;
157}
158
159static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter,
160 size_t len)
161{
162 const void __user *res = iter->cur;
163
164 if (iter->cur + len > iter->end)
165 return (void __force __user *)ERR_PTR(-ENOSPC);
166 iter->cur += len;
167 return res;
168}
169
170static int uverbs_request_finish(struct uverbs_req_iter *iter)
171{
172 if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur))
173 return -EOPNOTSUPP;
174 return 0;
175}
176
177/*
178 * When calling a destroy function during an error unwind we need to pass in
179 * the udata that is sanitized of all user arguments. Ie from the driver
180 * perspective it looks like no udata was passed.
181 */
182struct ib_udata *uverbs_get_cleared_udata(struct uverbs_attr_bundle *attrs)
183{
184 attrs->driver_udata = (struct ib_udata){};
185 return &attrs->driver_udata;
186}
187
188static struct ib_uverbs_completion_event_file *
189_ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs)
190{
191 struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL,
192 fd, attrs);
193
194 if (IS_ERR(uobj))
195 return (void *)uobj;
196
197 uverbs_uobject_get(uobj);
198 uobj_put_read(uobj);
199
200 return container_of(uobj, struct ib_uverbs_completion_event_file,
201 uobj);
202}
203#define ib_uverbs_lookup_comp_file(_fd, _ufile) \
204 _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile)
205
206int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs)
207{
208 struct ib_uverbs_file *ufile = attrs->ufile;
209 struct ib_ucontext *ucontext;
210 struct ib_device *ib_dev;
211
212 ib_dev = srcu_dereference(ufile->device->ib_dev,
213 &ufile->device->disassociate_srcu);
214 if (!ib_dev)
215 return -EIO;
216
217 ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext);
218 if (!ucontext)
219 return -ENOMEM;
220
221 ucontext->device = ib_dev;
222 ucontext->ufile = ufile;
223 xa_init_flags(&ucontext->mmap_xa, XA_FLAGS_ALLOC);
224
225 rdma_restrack_new(&ucontext->res, RDMA_RESTRACK_CTX);
226 rdma_restrack_set_name(&ucontext->res, NULL);
227 attrs->context = ucontext;
228 return 0;
229}
230
231int ib_init_ucontext(struct uverbs_attr_bundle *attrs)
232{
233 struct ib_ucontext *ucontext = attrs->context;
234 struct ib_uverbs_file *file = attrs->ufile;
235 int ret;
236
237 if (!down_read_trylock(&file->hw_destroy_rwsem))
238 return -EIO;
239 mutex_lock(&file->ucontext_lock);
240 if (file->ucontext) {
241 ret = -EINVAL;
242 goto err;
243 }
244
245 ret = ib_rdmacg_try_charge(&ucontext->cg_obj, ucontext->device,
246 RDMACG_RESOURCE_HCA_HANDLE);
247 if (ret)
248 goto err;
249
250 ret = ucontext->device->ops.alloc_ucontext(ucontext,
251 &attrs->driver_udata);
252 if (ret)
253 goto err_uncharge;
254
255 rdma_restrack_add(&ucontext->res);
256
257 /*
258 * Make sure that ib_uverbs_get_ucontext() sees the pointer update
259 * only after all writes to setup the ucontext have completed
260 */
261 smp_store_release(&file->ucontext, ucontext);
262
263 mutex_unlock(&file->ucontext_lock);
264 up_read(&file->hw_destroy_rwsem);
265 return 0;
266
267err_uncharge:
268 ib_rdmacg_uncharge(&ucontext->cg_obj, ucontext->device,
269 RDMACG_RESOURCE_HCA_HANDLE);
270err:
271 mutex_unlock(&file->ucontext_lock);
272 up_read(&file->hw_destroy_rwsem);
273 return ret;
274}
275
276static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs)
277{
278 struct ib_uverbs_get_context_resp resp;
279 struct ib_uverbs_get_context cmd;
280 struct ib_device *ib_dev;
281 struct ib_uobject *uobj;
282 int ret;
283
284 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
285 if (ret)
286 return ret;
287
288 ret = ib_alloc_ucontext(attrs);
289 if (ret)
290 return ret;
291
292 uobj = uobj_alloc(UVERBS_OBJECT_ASYNC_EVENT, attrs, &ib_dev);
293 if (IS_ERR(uobj)) {
294 ret = PTR_ERR(uobj);
295 goto err_ucontext;
296 }
297
298 resp = (struct ib_uverbs_get_context_resp){
299 .num_comp_vectors = attrs->ufile->device->num_comp_vectors,
300 .async_fd = uobj->id,
301 };
302 ret = uverbs_response(attrs, &resp, sizeof(resp));
303 if (ret)
304 goto err_uobj;
305
306 ret = ib_init_ucontext(attrs);
307 if (ret)
308 goto err_uobj;
309
310 ib_uverbs_init_async_event_file(
311 container_of(uobj, struct ib_uverbs_async_event_file, uobj));
312 rdma_alloc_commit_uobject(uobj, attrs);
313 return 0;
314
315err_uobj:
316 rdma_alloc_abort_uobject(uobj, attrs, false);
317err_ucontext:
318 rdma_restrack_put(&attrs->context->res);
319 kfree(attrs->context);
320 attrs->context = NULL;
321 return ret;
322}
323
324static void copy_query_dev_fields(struct ib_ucontext *ucontext,
325 struct ib_uverbs_query_device_resp *resp,
326 struct ib_device_attr *attr)
327{
328 struct ib_device *ib_dev = ucontext->device;
329
330 resp->fw_ver = attr->fw_ver;
331 resp->node_guid = ib_dev->node_guid;
332 resp->sys_image_guid = attr->sys_image_guid;
333 resp->max_mr_size = attr->max_mr_size;
334 resp->page_size_cap = attr->page_size_cap;
335 resp->vendor_id = attr->vendor_id;
336 resp->vendor_part_id = attr->vendor_part_id;
337 resp->hw_ver = attr->hw_ver;
338 resp->max_qp = attr->max_qp;
339 resp->max_qp_wr = attr->max_qp_wr;
340 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags);
341 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge);
342 resp->max_sge_rd = attr->max_sge_rd;
343 resp->max_cq = attr->max_cq;
344 resp->max_cqe = attr->max_cqe;
345 resp->max_mr = attr->max_mr;
346 resp->max_pd = attr->max_pd;
347 resp->max_qp_rd_atom = attr->max_qp_rd_atom;
348 resp->max_ee_rd_atom = attr->max_ee_rd_atom;
349 resp->max_res_rd_atom = attr->max_res_rd_atom;
350 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom;
351 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom;
352 resp->atomic_cap = attr->atomic_cap;
353 resp->max_ee = attr->max_ee;
354 resp->max_rdd = attr->max_rdd;
355 resp->max_mw = attr->max_mw;
356 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp;
357 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp;
358 resp->max_mcast_grp = attr->max_mcast_grp;
359 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
360 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
361 resp->max_ah = attr->max_ah;
362 resp->max_srq = attr->max_srq;
363 resp->max_srq_wr = attr->max_srq_wr;
364 resp->max_srq_sge = attr->max_srq_sge;
365 resp->max_pkeys = attr->max_pkeys;
366 resp->local_ca_ack_delay = attr->local_ca_ack_delay;
367 resp->phys_port_cnt = min_t(u32, ib_dev->phys_port_cnt, U8_MAX);
368}
369
370static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs)
371{
372 struct ib_uverbs_query_device cmd;
373 struct ib_uverbs_query_device_resp resp;
374 struct ib_ucontext *ucontext;
375 int ret;
376
377 ucontext = ib_uverbs_get_ucontext(attrs);
378 if (IS_ERR(ucontext))
379 return PTR_ERR(ucontext);
380
381 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
382 if (ret)
383 return ret;
384
385 memset(&resp, 0, sizeof resp);
386 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs);
387
388 return uverbs_response(attrs, &resp, sizeof(resp));
389}
390
391static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs)
392{
393 struct ib_uverbs_query_port cmd;
394 struct ib_uverbs_query_port_resp resp;
395 struct ib_port_attr attr;
396 int ret;
397 struct ib_ucontext *ucontext;
398 struct ib_device *ib_dev;
399
400 ucontext = ib_uverbs_get_ucontext(attrs);
401 if (IS_ERR(ucontext))
402 return PTR_ERR(ucontext);
403 ib_dev = ucontext->device;
404
405 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
406 if (ret)
407 return ret;
408
409 ret = ib_query_port(ib_dev, cmd.port_num, &attr);
410 if (ret)
411 return ret;
412
413 memset(&resp, 0, sizeof resp);
414 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num);
415
416 return uverbs_response(attrs, &resp, sizeof(resp));
417}
418
419static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs)
420{
421 struct ib_uverbs_alloc_pd_resp resp = {};
422 struct ib_uverbs_alloc_pd cmd;
423 struct ib_uobject *uobj;
424 struct ib_pd *pd;
425 int ret;
426 struct ib_device *ib_dev;
427
428 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
429 if (ret)
430 return ret;
431
432 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev);
433 if (IS_ERR(uobj))
434 return PTR_ERR(uobj);
435
436 pd = rdma_zalloc_drv_obj(ib_dev, ib_pd);
437 if (!pd) {
438 ret = -ENOMEM;
439 goto err;
440 }
441
442 pd->device = ib_dev;
443 pd->uobject = uobj;
444 atomic_set(&pd->usecnt, 0);
445
446 rdma_restrack_new(&pd->res, RDMA_RESTRACK_PD);
447 rdma_restrack_set_name(&pd->res, NULL);
448
449 ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata);
450 if (ret)
451 goto err_alloc;
452 rdma_restrack_add(&pd->res);
453
454 uobj->object = pd;
455 uobj_finalize_uobj_create(uobj, attrs);
456
457 resp.pd_handle = uobj->id;
458 return uverbs_response(attrs, &resp, sizeof(resp));
459
460err_alloc:
461 rdma_restrack_put(&pd->res);
462 kfree(pd);
463err:
464 uobj_alloc_abort(uobj, attrs);
465 return ret;
466}
467
468static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs)
469{
470 struct ib_uverbs_dealloc_pd cmd;
471 int ret;
472
473 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
474 if (ret)
475 return ret;
476
477 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
478}
479
480struct xrcd_table_entry {
481 struct rb_node node;
482 struct ib_xrcd *xrcd;
483 struct inode *inode;
484};
485
486static int xrcd_table_insert(struct ib_uverbs_device *dev,
487 struct inode *inode,
488 struct ib_xrcd *xrcd)
489{
490 struct xrcd_table_entry *entry, *scan;
491 struct rb_node **p = &dev->xrcd_tree.rb_node;
492 struct rb_node *parent = NULL;
493
494 entry = kmalloc(sizeof *entry, GFP_KERNEL);
495 if (!entry)
496 return -ENOMEM;
497
498 entry->xrcd = xrcd;
499 entry->inode = inode;
500
501 while (*p) {
502 parent = *p;
503 scan = rb_entry(parent, struct xrcd_table_entry, node);
504
505 if (inode < scan->inode) {
506 p = &(*p)->rb_left;
507 } else if (inode > scan->inode) {
508 p = &(*p)->rb_right;
509 } else {
510 kfree(entry);
511 return -EEXIST;
512 }
513 }
514
515 rb_link_node(&entry->node, parent, p);
516 rb_insert_color(&entry->node, &dev->xrcd_tree);
517 igrab(inode);
518 return 0;
519}
520
521static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
522 struct inode *inode)
523{
524 struct xrcd_table_entry *entry;
525 struct rb_node *p = dev->xrcd_tree.rb_node;
526
527 while (p) {
528 entry = rb_entry(p, struct xrcd_table_entry, node);
529
530 if (inode < entry->inode)
531 p = p->rb_left;
532 else if (inode > entry->inode)
533 p = p->rb_right;
534 else
535 return entry;
536 }
537
538 return NULL;
539}
540
541static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
542{
543 struct xrcd_table_entry *entry;
544
545 entry = xrcd_table_search(dev, inode);
546 if (!entry)
547 return NULL;
548
549 return entry->xrcd;
550}
551
552static void xrcd_table_delete(struct ib_uverbs_device *dev,
553 struct inode *inode)
554{
555 struct xrcd_table_entry *entry;
556
557 entry = xrcd_table_search(dev, inode);
558 if (entry) {
559 iput(inode);
560 rb_erase(&entry->node, &dev->xrcd_tree);
561 kfree(entry);
562 }
563}
564
565static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs)
566{
567 struct ib_uverbs_device *ibudev = attrs->ufile->device;
568 struct ib_uverbs_open_xrcd_resp resp = {};
569 struct ib_uverbs_open_xrcd cmd;
570 struct ib_uxrcd_object *obj;
571 struct ib_xrcd *xrcd = NULL;
572 struct inode *inode = NULL;
573 int new_xrcd = 0;
574 struct ib_device *ib_dev;
575 struct fd f = {};
576 int ret;
577
578 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
579 if (ret)
580 return ret;
581
582 mutex_lock(&ibudev->xrcd_tree_mutex);
583
584 if (cmd.fd != -1) {
585 /* search for file descriptor */
586 f = fdget(cmd.fd);
587 if (!f.file) {
588 ret = -EBADF;
589 goto err_tree_mutex_unlock;
590 }
591
592 inode = file_inode(f.file);
593 xrcd = find_xrcd(ibudev, inode);
594 if (!xrcd && !(cmd.oflags & O_CREAT)) {
595 /* no file descriptor. Need CREATE flag */
596 ret = -EAGAIN;
597 goto err_tree_mutex_unlock;
598 }
599
600 if (xrcd && cmd.oflags & O_EXCL) {
601 ret = -EINVAL;
602 goto err_tree_mutex_unlock;
603 }
604 }
605
606 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs,
607 &ib_dev);
608 if (IS_ERR(obj)) {
609 ret = PTR_ERR(obj);
610 goto err_tree_mutex_unlock;
611 }
612
613 if (!xrcd) {
614 xrcd = ib_alloc_xrcd_user(ib_dev, inode, &attrs->driver_udata);
615 if (IS_ERR(xrcd)) {
616 ret = PTR_ERR(xrcd);
617 goto err;
618 }
619 new_xrcd = 1;
620 }
621
622 atomic_set(&obj->refcnt, 0);
623 obj->uobject.object = xrcd;
624
625 if (inode) {
626 if (new_xrcd) {
627 /* create new inode/xrcd table entry */
628 ret = xrcd_table_insert(ibudev, inode, xrcd);
629 if (ret)
630 goto err_dealloc_xrcd;
631 }
632 atomic_inc(&xrcd->usecnt);
633 }
634
635 if (f.file)
636 fdput(f);
637
638 mutex_unlock(&ibudev->xrcd_tree_mutex);
639 uobj_finalize_uobj_create(&obj->uobject, attrs);
640
641 resp.xrcd_handle = obj->uobject.id;
642 return uverbs_response(attrs, &resp, sizeof(resp));
643
644err_dealloc_xrcd:
645 ib_dealloc_xrcd_user(xrcd, uverbs_get_cleared_udata(attrs));
646
647err:
648 uobj_alloc_abort(&obj->uobject, attrs);
649
650err_tree_mutex_unlock:
651 if (f.file)
652 fdput(f);
653
654 mutex_unlock(&ibudev->xrcd_tree_mutex);
655
656 return ret;
657}
658
659static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs)
660{
661 struct ib_uverbs_close_xrcd cmd;
662 int ret;
663
664 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
665 if (ret)
666 return ret;
667
668 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs);
669}
670
671int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd,
672 enum rdma_remove_reason why,
673 struct uverbs_attr_bundle *attrs)
674{
675 struct inode *inode;
676 int ret;
677 struct ib_uverbs_device *dev = attrs->ufile->device;
678
679 inode = xrcd->inode;
680 if (inode && !atomic_dec_and_test(&xrcd->usecnt))
681 return 0;
682
683 ret = ib_dealloc_xrcd_user(xrcd, &attrs->driver_udata);
684 if (ret) {
685 atomic_inc(&xrcd->usecnt);
686 return ret;
687 }
688
689 if (inode)
690 xrcd_table_delete(dev, inode);
691
692 return 0;
693}
694
695static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs)
696{
697 struct ib_uverbs_reg_mr_resp resp = {};
698 struct ib_uverbs_reg_mr cmd;
699 struct ib_uobject *uobj;
700 struct ib_pd *pd;
701 struct ib_mr *mr;
702 int ret;
703 struct ib_device *ib_dev;
704
705 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
706 if (ret)
707 return ret;
708
709 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
710 return -EINVAL;
711
712 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
713 if (IS_ERR(uobj))
714 return PTR_ERR(uobj);
715
716 ret = ib_check_mr_access(ib_dev, cmd.access_flags);
717 if (ret)
718 goto err_free;
719
720 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
721 if (!pd) {
722 ret = -EINVAL;
723 goto err_free;
724 }
725
726 mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
727 cmd.access_flags,
728 &attrs->driver_udata);
729 if (IS_ERR(mr)) {
730 ret = PTR_ERR(mr);
731 goto err_put;
732 }
733
734 mr->device = pd->device;
735 mr->pd = pd;
736 mr->type = IB_MR_TYPE_USER;
737 mr->dm = NULL;
738 mr->sig_attrs = NULL;
739 mr->uobject = uobj;
740 atomic_inc(&pd->usecnt);
741 mr->iova = cmd.hca_va;
742
743 rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
744 rdma_restrack_set_name(&mr->res, NULL);
745 rdma_restrack_add(&mr->res);
746
747 uobj->object = mr;
748 uobj_put_obj_read(pd);
749 uobj_finalize_uobj_create(uobj, attrs);
750
751 resp.lkey = mr->lkey;
752 resp.rkey = mr->rkey;
753 resp.mr_handle = uobj->id;
754 return uverbs_response(attrs, &resp, sizeof(resp));
755
756err_put:
757 uobj_put_obj_read(pd);
758err_free:
759 uobj_alloc_abort(uobj, attrs);
760 return ret;
761}
762
763static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs)
764{
765 struct ib_uverbs_rereg_mr cmd;
766 struct ib_uverbs_rereg_mr_resp resp;
767 struct ib_mr *mr;
768 int ret;
769 struct ib_uobject *uobj;
770 struct ib_uobject *new_uobj;
771 struct ib_device *ib_dev;
772 struct ib_pd *orig_pd;
773 struct ib_pd *new_pd;
774 struct ib_mr *new_mr;
775
776 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
777 if (ret)
778 return ret;
779
780 if (!cmd.flags)
781 return -EINVAL;
782
783 if (cmd.flags & ~IB_MR_REREG_SUPPORTED)
784 return -EOPNOTSUPP;
785
786 if ((cmd.flags & IB_MR_REREG_TRANS) &&
787 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
788 return -EINVAL;
789
790 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
791 if (IS_ERR(uobj))
792 return PTR_ERR(uobj);
793
794 mr = uobj->object;
795
796 if (mr->dm) {
797 ret = -EINVAL;
798 goto put_uobjs;
799 }
800
801 if (cmd.flags & IB_MR_REREG_ACCESS) {
802 ret = ib_check_mr_access(mr->device, cmd.access_flags);
803 if (ret)
804 goto put_uobjs;
805 }
806
807 orig_pd = mr->pd;
808 if (cmd.flags & IB_MR_REREG_PD) {
809 new_pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle,
810 attrs);
811 if (!new_pd) {
812 ret = -EINVAL;
813 goto put_uobjs;
814 }
815 } else {
816 new_pd = mr->pd;
817 }
818
819 /*
820 * The driver might create a new HW object as part of the rereg, we need
821 * to have a uobject ready to hold it.
822 */
823 new_uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
824 if (IS_ERR(new_uobj)) {
825 ret = PTR_ERR(new_uobj);
826 goto put_uobj_pd;
827 }
828
829 new_mr = ib_dev->ops.rereg_user_mr(mr, cmd.flags, cmd.start, cmd.length,
830 cmd.hca_va, cmd.access_flags, new_pd,
831 &attrs->driver_udata);
832 if (IS_ERR(new_mr)) {
833 ret = PTR_ERR(new_mr);
834 goto put_new_uobj;
835 }
836 if (new_mr) {
837 new_mr->device = new_pd->device;
838 new_mr->pd = new_pd;
839 new_mr->type = IB_MR_TYPE_USER;
840 new_mr->dm = NULL;
841 new_mr->sig_attrs = NULL;
842 new_mr->uobject = uobj;
843 atomic_inc(&new_pd->usecnt);
844 new_mr->iova = cmd.hca_va;
845 new_uobj->object = new_mr;
846
847 rdma_restrack_new(&new_mr->res, RDMA_RESTRACK_MR);
848 rdma_restrack_set_name(&new_mr->res, NULL);
849 rdma_restrack_add(&new_mr->res);
850
851 /*
852 * The new uobj for the new HW object is put into the same spot
853 * in the IDR and the old uobj & HW object is deleted.
854 */
855 rdma_assign_uobject(uobj, new_uobj, attrs);
856 rdma_alloc_commit_uobject(new_uobj, attrs);
857 uobj_put_destroy(uobj);
858 new_uobj = NULL;
859 uobj = NULL;
860 mr = new_mr;
861 } else {
862 if (cmd.flags & IB_MR_REREG_PD) {
863 atomic_dec(&orig_pd->usecnt);
864 mr->pd = new_pd;
865 atomic_inc(&new_pd->usecnt);
866 }
867 if (cmd.flags & IB_MR_REREG_TRANS)
868 mr->iova = cmd.hca_va;
869 }
870
871 memset(&resp, 0, sizeof(resp));
872 resp.lkey = mr->lkey;
873 resp.rkey = mr->rkey;
874
875 ret = uverbs_response(attrs, &resp, sizeof(resp));
876
877put_new_uobj:
878 if (new_uobj)
879 uobj_alloc_abort(new_uobj, attrs);
880put_uobj_pd:
881 if (cmd.flags & IB_MR_REREG_PD)
882 uobj_put_obj_read(new_pd);
883
884put_uobjs:
885 if (uobj)
886 uobj_put_write(uobj);
887
888 return ret;
889}
890
891static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs)
892{
893 struct ib_uverbs_dereg_mr cmd;
894 int ret;
895
896 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
897 if (ret)
898 return ret;
899
900 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
901}
902
903static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
904{
905 struct ib_uverbs_alloc_mw cmd;
906 struct ib_uverbs_alloc_mw_resp resp = {};
907 struct ib_uobject *uobj;
908 struct ib_pd *pd;
909 struct ib_mw *mw;
910 int ret;
911 struct ib_device *ib_dev;
912
913 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
914 if (ret)
915 return ret;
916
917 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev);
918 if (IS_ERR(uobj))
919 return PTR_ERR(uobj);
920
921 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
922 if (!pd) {
923 ret = -EINVAL;
924 goto err_free;
925 }
926
927 if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) {
928 ret = -EINVAL;
929 goto err_put;
930 }
931
932 mw = rdma_zalloc_drv_obj(ib_dev, ib_mw);
933 if (!mw) {
934 ret = -ENOMEM;
935 goto err_put;
936 }
937
938 mw->device = ib_dev;
939 mw->pd = pd;
940 mw->uobject = uobj;
941 mw->type = cmd.mw_type;
942
943 ret = pd->device->ops.alloc_mw(mw, &attrs->driver_udata);
944 if (ret)
945 goto err_alloc;
946
947 atomic_inc(&pd->usecnt);
948
949 uobj->object = mw;
950 uobj_put_obj_read(pd);
951 uobj_finalize_uobj_create(uobj, attrs);
952
953 resp.rkey = mw->rkey;
954 resp.mw_handle = uobj->id;
955 return uverbs_response(attrs, &resp, sizeof(resp));
956
957err_alloc:
958 kfree(mw);
959err_put:
960 uobj_put_obj_read(pd);
961err_free:
962 uobj_alloc_abort(uobj, attrs);
963 return ret;
964}
965
966static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs)
967{
968 struct ib_uverbs_dealloc_mw cmd;
969 int ret;
970
971 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
972 if (ret)
973 return ret;
974
975 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs);
976}
977
978static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs)
979{
980 struct ib_uverbs_create_comp_channel cmd;
981 struct ib_uverbs_create_comp_channel_resp resp;
982 struct ib_uobject *uobj;
983 struct ib_uverbs_completion_event_file *ev_file;
984 struct ib_device *ib_dev;
985 int ret;
986
987 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
988 if (ret)
989 return ret;
990
991 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev);
992 if (IS_ERR(uobj))
993 return PTR_ERR(uobj);
994
995 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file,
996 uobj);
997 ib_uverbs_init_event_queue(&ev_file->ev_queue);
998 uobj_finalize_uobj_create(uobj, attrs);
999
1000 resp.fd = uobj->id;
1001 return uverbs_response(attrs, &resp, sizeof(resp));
1002}
1003
1004static int create_cq(struct uverbs_attr_bundle *attrs,
1005 struct ib_uverbs_ex_create_cq *cmd)
1006{
1007 struct ib_ucq_object *obj;
1008 struct ib_uverbs_completion_event_file *ev_file = NULL;
1009 struct ib_cq *cq;
1010 int ret;
1011 struct ib_uverbs_ex_create_cq_resp resp = {};
1012 struct ib_cq_init_attr attr = {};
1013 struct ib_device *ib_dev;
1014
1015 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors)
1016 return -EINVAL;
1017
1018 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs,
1019 &ib_dev);
1020 if (IS_ERR(obj))
1021 return PTR_ERR(obj);
1022
1023 if (cmd->comp_channel >= 0) {
1024 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs);
1025 if (IS_ERR(ev_file)) {
1026 ret = PTR_ERR(ev_file);
1027 goto err;
1028 }
1029 }
1030
1031 obj->uevent.uobject.user_handle = cmd->user_handle;
1032 INIT_LIST_HEAD(&obj->comp_list);
1033 INIT_LIST_HEAD(&obj->uevent.event_list);
1034
1035 attr.cqe = cmd->cqe;
1036 attr.comp_vector = cmd->comp_vector;
1037 attr.flags = cmd->flags;
1038
1039 cq = rdma_zalloc_drv_obj(ib_dev, ib_cq);
1040 if (!cq) {
1041 ret = -ENOMEM;
1042 goto err_file;
1043 }
1044 cq->device = ib_dev;
1045 cq->uobject = obj;
1046 cq->comp_handler = ib_uverbs_comp_handler;
1047 cq->event_handler = ib_uverbs_cq_event_handler;
1048 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
1049 atomic_set(&cq->usecnt, 0);
1050
1051 rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ);
1052 rdma_restrack_set_name(&cq->res, NULL);
1053
1054 ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata);
1055 if (ret)
1056 goto err_free;
1057 rdma_restrack_add(&cq->res);
1058
1059 obj->uevent.uobject.object = cq;
1060 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
1061 if (obj->uevent.event_file)
1062 uverbs_uobject_get(&obj->uevent.event_file->uobj);
1063 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1064
1065 resp.base.cq_handle = obj->uevent.uobject.id;
1066 resp.base.cqe = cq->cqe;
1067 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1068 return uverbs_response(attrs, &resp, sizeof(resp));
1069
1070err_free:
1071 rdma_restrack_put(&cq->res);
1072 kfree(cq);
1073err_file:
1074 if (ev_file)
1075 ib_uverbs_release_ucq(ev_file, obj);
1076err:
1077 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1078 return ret;
1079}
1080
1081static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs)
1082{
1083 struct ib_uverbs_create_cq cmd;
1084 struct ib_uverbs_ex_create_cq cmd_ex;
1085 int ret;
1086
1087 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1088 if (ret)
1089 return ret;
1090
1091 memset(&cmd_ex, 0, sizeof(cmd_ex));
1092 cmd_ex.user_handle = cmd.user_handle;
1093 cmd_ex.cqe = cmd.cqe;
1094 cmd_ex.comp_vector = cmd.comp_vector;
1095 cmd_ex.comp_channel = cmd.comp_channel;
1096
1097 return create_cq(attrs, &cmd_ex);
1098}
1099
1100static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs)
1101{
1102 struct ib_uverbs_ex_create_cq cmd;
1103 int ret;
1104
1105 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1106 if (ret)
1107 return ret;
1108
1109 if (cmd.comp_mask)
1110 return -EINVAL;
1111
1112 if (cmd.reserved)
1113 return -EINVAL;
1114
1115 return create_cq(attrs, &cmd);
1116}
1117
1118static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs)
1119{
1120 struct ib_uverbs_resize_cq cmd;
1121 struct ib_uverbs_resize_cq_resp resp = {};
1122 struct ib_cq *cq;
1123 int ret;
1124
1125 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1126 if (ret)
1127 return ret;
1128
1129 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1130 if (!cq)
1131 return -EINVAL;
1132
1133 ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata);
1134 if (ret)
1135 goto out;
1136
1137 resp.cqe = cq->cqe;
1138
1139 ret = uverbs_response(attrs, &resp, sizeof(resp));
1140out:
1141 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1142 UVERBS_LOOKUP_READ);
1143
1144 return ret;
1145}
1146
1147static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest,
1148 struct ib_wc *wc)
1149{
1150 struct ib_uverbs_wc tmp;
1151
1152 tmp.wr_id = wc->wr_id;
1153 tmp.status = wc->status;
1154 tmp.opcode = wc->opcode;
1155 tmp.vendor_err = wc->vendor_err;
1156 tmp.byte_len = wc->byte_len;
1157 tmp.ex.imm_data = wc->ex.imm_data;
1158 tmp.qp_num = wc->qp->qp_num;
1159 tmp.src_qp = wc->src_qp;
1160 tmp.wc_flags = wc->wc_flags;
1161 tmp.pkey_index = wc->pkey_index;
1162 if (rdma_cap_opa_ah(ib_dev, wc->port_num))
1163 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid);
1164 else
1165 tmp.slid = ib_lid_cpu16(wc->slid);
1166 tmp.sl = wc->sl;
1167 tmp.dlid_path_bits = wc->dlid_path_bits;
1168 tmp.port_num = wc->port_num;
1169 tmp.reserved = 0;
1170
1171 if (copy_to_user(dest, &tmp, sizeof tmp))
1172 return -EFAULT;
1173
1174 return 0;
1175}
1176
1177static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs)
1178{
1179 struct ib_uverbs_poll_cq cmd;
1180 struct ib_uverbs_poll_cq_resp resp;
1181 u8 __user *header_ptr;
1182 u8 __user *data_ptr;
1183 struct ib_cq *cq;
1184 struct ib_wc wc;
1185 int ret;
1186
1187 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1188 if (ret)
1189 return ret;
1190
1191 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1192 if (!cq)
1193 return -EINVAL;
1194
1195 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1196 header_ptr = attrs->ucore.outbuf;
1197 data_ptr = header_ptr + sizeof resp;
1198
1199 memset(&resp, 0, sizeof resp);
1200 while (resp.count < cmd.ne) {
1201 ret = ib_poll_cq(cq, 1, &wc);
1202 if (ret < 0)
1203 goto out_put;
1204 if (!ret)
1205 break;
1206
1207 ret = copy_wc_to_user(cq->device, data_ptr, &wc);
1208 if (ret)
1209 goto out_put;
1210
1211 data_ptr += sizeof(struct ib_uverbs_wc);
1212 ++resp.count;
1213 }
1214
1215 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1216 ret = -EFAULT;
1217 goto out_put;
1218 }
1219 ret = 0;
1220
1221 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
1222 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT);
1223
1224out_put:
1225 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1226 UVERBS_LOOKUP_READ);
1227 return ret;
1228}
1229
1230static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs)
1231{
1232 struct ib_uverbs_req_notify_cq cmd;
1233 struct ib_cq *cq;
1234 int ret;
1235
1236 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1237 if (ret)
1238 return ret;
1239
1240 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1241 if (!cq)
1242 return -EINVAL;
1243
1244 ib_req_notify_cq(cq, cmd.solicited_only ?
1245 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1246
1247 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1248 UVERBS_LOOKUP_READ);
1249 return 0;
1250}
1251
1252static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs)
1253{
1254 struct ib_uverbs_destroy_cq cmd;
1255 struct ib_uverbs_destroy_cq_resp resp;
1256 struct ib_uobject *uobj;
1257 struct ib_ucq_object *obj;
1258 int ret;
1259
1260 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1261 if (ret)
1262 return ret;
1263
1264 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1265 if (IS_ERR(uobj))
1266 return PTR_ERR(uobj);
1267
1268 obj = container_of(uobj, struct ib_ucq_object, uevent.uobject);
1269 memset(&resp, 0, sizeof(resp));
1270 resp.comp_events_reported = obj->comp_events_reported;
1271 resp.async_events_reported = obj->uevent.events_reported;
1272
1273 uobj_put_destroy(uobj);
1274
1275 return uverbs_response(attrs, &resp, sizeof(resp));
1276}
1277
1278static int create_qp(struct uverbs_attr_bundle *attrs,
1279 struct ib_uverbs_ex_create_qp *cmd)
1280{
1281 struct ib_uqp_object *obj;
1282 struct ib_device *device;
1283 struct ib_pd *pd = NULL;
1284 struct ib_xrcd *xrcd = NULL;
1285 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT);
1286 struct ib_cq *scq = NULL, *rcq = NULL;
1287 struct ib_srq *srq = NULL;
1288 struct ib_qp *qp;
1289 struct ib_qp_init_attr attr = {};
1290 struct ib_uverbs_ex_create_qp_resp resp = {};
1291 int ret;
1292 struct ib_rwq_ind_table *ind_tbl = NULL;
1293 bool has_sq = true;
1294 struct ib_device *ib_dev;
1295
1296 switch (cmd->qp_type) {
1297 case IB_QPT_RAW_PACKET:
1298 if (!capable(CAP_NET_RAW))
1299 return -EPERM;
1300 break;
1301 case IB_QPT_RC:
1302 case IB_QPT_UC:
1303 case IB_QPT_UD:
1304 case IB_QPT_XRC_INI:
1305 case IB_QPT_XRC_TGT:
1306 case IB_QPT_DRIVER:
1307 break;
1308 default:
1309 return -EINVAL;
1310 }
1311
1312 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1313 &ib_dev);
1314 if (IS_ERR(obj))
1315 return PTR_ERR(obj);
1316 obj->uxrcd = NULL;
1317 obj->uevent.uobject.user_handle = cmd->user_handle;
1318 mutex_init(&obj->mcast_lock);
1319
1320 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) {
1321 ind_tbl = uobj_get_obj_read(rwq_ind_table,
1322 UVERBS_OBJECT_RWQ_IND_TBL,
1323 cmd->rwq_ind_tbl_handle, attrs);
1324 if (!ind_tbl) {
1325 ret = -EINVAL;
1326 goto err_put;
1327 }
1328
1329 attr.rwq_ind_tbl = ind_tbl;
1330 }
1331
1332 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1333 ret = -EINVAL;
1334 goto err_put;
1335 }
1336
1337 if (ind_tbl && !cmd->max_send_wr)
1338 has_sq = false;
1339
1340 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1341 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle,
1342 attrs);
1343
1344 if (IS_ERR(xrcd_uobj)) {
1345 ret = -EINVAL;
1346 goto err_put;
1347 }
1348
1349 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1350 if (!xrcd) {
1351 ret = -EINVAL;
1352 goto err_put;
1353 }
1354 device = xrcd->device;
1355 } else {
1356 if (cmd->qp_type == IB_QPT_XRC_INI) {
1357 cmd->max_recv_wr = 0;
1358 cmd->max_recv_sge = 0;
1359 } else {
1360 if (cmd->is_srq) {
1361 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ,
1362 cmd->srq_handle, attrs);
1363 if (!srq || srq->srq_type == IB_SRQT_XRC) {
1364 ret = -EINVAL;
1365 goto err_put;
1366 }
1367 }
1368
1369 if (!ind_tbl) {
1370 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1371 rcq = uobj_get_obj_read(
1372 cq, UVERBS_OBJECT_CQ,
1373 cmd->recv_cq_handle, attrs);
1374 if (!rcq) {
1375 ret = -EINVAL;
1376 goto err_put;
1377 }
1378 }
1379 }
1380 }
1381
1382 if (has_sq)
1383 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
1384 cmd->send_cq_handle, attrs);
1385 if (!ind_tbl && cmd->qp_type != IB_QPT_XRC_INI)
1386 rcq = rcq ?: scq;
1387 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle,
1388 attrs);
1389 if (!pd || (!scq && has_sq)) {
1390 ret = -EINVAL;
1391 goto err_put;
1392 }
1393
1394 device = pd->device;
1395 }
1396
1397 attr.event_handler = ib_uverbs_qp_event_handler;
1398 attr.send_cq = scq;
1399 attr.recv_cq = rcq;
1400 attr.srq = srq;
1401 attr.xrcd = xrcd;
1402 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1403 IB_SIGNAL_REQ_WR;
1404 attr.qp_type = cmd->qp_type;
1405 attr.create_flags = 0;
1406
1407 attr.cap.max_send_wr = cmd->max_send_wr;
1408 attr.cap.max_recv_wr = cmd->max_recv_wr;
1409 attr.cap.max_send_sge = cmd->max_send_sge;
1410 attr.cap.max_recv_sge = cmd->max_recv_sge;
1411 attr.cap.max_inline_data = cmd->max_inline_data;
1412
1413 INIT_LIST_HEAD(&obj->uevent.event_list);
1414 INIT_LIST_HEAD(&obj->mcast_list);
1415
1416 attr.create_flags = cmd->create_flags;
1417 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1418 IB_QP_CREATE_CROSS_CHANNEL |
1419 IB_QP_CREATE_MANAGED_SEND |
1420 IB_QP_CREATE_MANAGED_RECV |
1421 IB_QP_CREATE_SCATTER_FCS |
1422 IB_QP_CREATE_CVLAN_STRIPPING |
1423 IB_QP_CREATE_SOURCE_QPN |
1424 IB_QP_CREATE_PCI_WRITE_END_PADDING)) {
1425 ret = -EINVAL;
1426 goto err_put;
1427 }
1428
1429 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) {
1430 if (!capable(CAP_NET_RAW)) {
1431 ret = -EPERM;
1432 goto err_put;
1433 }
1434
1435 attr.source_qpn = cmd->source_qpn;
1436 }
1437
1438 if (cmd->qp_type == IB_QPT_XRC_TGT)
1439 qp = ib_create_qp(pd, &attr);
1440 else
1441 qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata, obj,
1442 NULL);
1443
1444 if (IS_ERR(qp)) {
1445 ret = PTR_ERR(qp);
1446 goto err_put;
1447 }
1448
1449 if (cmd->qp_type != IB_QPT_XRC_TGT) {
1450 ret = ib_create_qp_security(qp, device);
1451 if (ret)
1452 goto err_cb;
1453
1454 atomic_inc(&pd->usecnt);
1455 if (attr.send_cq)
1456 atomic_inc(&attr.send_cq->usecnt);
1457 if (attr.recv_cq)
1458 atomic_inc(&attr.recv_cq->usecnt);
1459 if (attr.srq)
1460 atomic_inc(&attr.srq->usecnt);
1461 if (ind_tbl)
1462 atomic_inc(&ind_tbl->usecnt);
1463 } else {
1464 /* It is done in _ib_create_qp for other QP types */
1465 qp->uobject = obj;
1466 }
1467
1468 obj->uevent.uobject.object = qp;
1469 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
1470 if (obj->uevent.event_file)
1471 uverbs_uobject_get(&obj->uevent.event_file->uobj);
1472
1473 if (xrcd) {
1474 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1475 uobject);
1476 atomic_inc(&obj->uxrcd->refcnt);
1477 uobj_put_read(xrcd_uobj);
1478 }
1479
1480 if (pd)
1481 uobj_put_obj_read(pd);
1482 if (scq)
1483 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject,
1484 UVERBS_LOOKUP_READ);
1485 if (rcq && rcq != scq)
1486 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject,
1487 UVERBS_LOOKUP_READ);
1488 if (srq)
1489 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
1490 UVERBS_LOOKUP_READ);
1491 if (ind_tbl)
1492 uobj_put_obj_read(ind_tbl);
1493 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1494
1495 resp.base.qpn = qp->qp_num;
1496 resp.base.qp_handle = obj->uevent.uobject.id;
1497 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1498 resp.base.max_send_sge = attr.cap.max_send_sge;
1499 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1500 resp.base.max_send_wr = attr.cap.max_send_wr;
1501 resp.base.max_inline_data = attr.cap.max_inline_data;
1502 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1503 return uverbs_response(attrs, &resp, sizeof(resp));
1504
1505err_cb:
1506 ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs));
1507
1508err_put:
1509 if (!IS_ERR(xrcd_uobj))
1510 uobj_put_read(xrcd_uobj);
1511 if (pd)
1512 uobj_put_obj_read(pd);
1513 if (scq)
1514 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject,
1515 UVERBS_LOOKUP_READ);
1516 if (rcq && rcq != scq)
1517 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject,
1518 UVERBS_LOOKUP_READ);
1519 if (srq)
1520 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
1521 UVERBS_LOOKUP_READ);
1522 if (ind_tbl)
1523 uobj_put_obj_read(ind_tbl);
1524
1525 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1526 return ret;
1527}
1528
1529static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs)
1530{
1531 struct ib_uverbs_create_qp cmd;
1532 struct ib_uverbs_ex_create_qp cmd_ex;
1533 int ret;
1534
1535 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1536 if (ret)
1537 return ret;
1538
1539 memset(&cmd_ex, 0, sizeof(cmd_ex));
1540 cmd_ex.user_handle = cmd.user_handle;
1541 cmd_ex.pd_handle = cmd.pd_handle;
1542 cmd_ex.send_cq_handle = cmd.send_cq_handle;
1543 cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1544 cmd_ex.srq_handle = cmd.srq_handle;
1545 cmd_ex.max_send_wr = cmd.max_send_wr;
1546 cmd_ex.max_recv_wr = cmd.max_recv_wr;
1547 cmd_ex.max_send_sge = cmd.max_send_sge;
1548 cmd_ex.max_recv_sge = cmd.max_recv_sge;
1549 cmd_ex.max_inline_data = cmd.max_inline_data;
1550 cmd_ex.sq_sig_all = cmd.sq_sig_all;
1551 cmd_ex.qp_type = cmd.qp_type;
1552 cmd_ex.is_srq = cmd.is_srq;
1553
1554 return create_qp(attrs, &cmd_ex);
1555}
1556
1557static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs)
1558{
1559 struct ib_uverbs_ex_create_qp cmd;
1560 int ret;
1561
1562 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1563 if (ret)
1564 return ret;
1565
1566 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1567 return -EINVAL;
1568
1569 if (cmd.reserved)
1570 return -EINVAL;
1571
1572 return create_qp(attrs, &cmd);
1573}
1574
1575static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs)
1576{
1577 struct ib_uverbs_create_qp_resp resp = {};
1578 struct ib_uverbs_open_qp cmd;
1579 struct ib_uqp_object *obj;
1580 struct ib_xrcd *xrcd;
1581 struct ib_qp *qp;
1582 struct ib_qp_open_attr attr = {};
1583 int ret;
1584 struct ib_uobject *xrcd_uobj;
1585 struct ib_device *ib_dev;
1586
1587 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1588 if (ret)
1589 return ret;
1590
1591 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1592 &ib_dev);
1593 if (IS_ERR(obj))
1594 return PTR_ERR(obj);
1595
1596 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs);
1597 if (IS_ERR(xrcd_uobj)) {
1598 ret = -EINVAL;
1599 goto err_put;
1600 }
1601
1602 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1603 if (!xrcd) {
1604 ret = -EINVAL;
1605 goto err_xrcd;
1606 }
1607
1608 attr.event_handler = ib_uverbs_qp_event_handler;
1609 attr.qp_num = cmd.qpn;
1610 attr.qp_type = cmd.qp_type;
1611
1612 INIT_LIST_HEAD(&obj->uevent.event_list);
1613 INIT_LIST_HEAD(&obj->mcast_list);
1614
1615 qp = ib_open_qp(xrcd, &attr);
1616 if (IS_ERR(qp)) {
1617 ret = PTR_ERR(qp);
1618 goto err_xrcd;
1619 }
1620
1621 obj->uevent.uobject.object = qp;
1622 obj->uevent.uobject.user_handle = cmd.user_handle;
1623
1624 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1625 atomic_inc(&obj->uxrcd->refcnt);
1626 qp->uobject = obj;
1627 uobj_put_read(xrcd_uobj);
1628 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1629
1630 resp.qpn = qp->qp_num;
1631 resp.qp_handle = obj->uevent.uobject.id;
1632 return uverbs_response(attrs, &resp, sizeof(resp));
1633
1634err_xrcd:
1635 uobj_put_read(xrcd_uobj);
1636err_put:
1637 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1638 return ret;
1639}
1640
1641static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr,
1642 struct rdma_ah_attr *rdma_attr)
1643{
1644 const struct ib_global_route *grh;
1645
1646 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr);
1647 uverb_attr->sl = rdma_ah_get_sl(rdma_attr);
1648 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr);
1649 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr);
1650 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) &
1651 IB_AH_GRH);
1652 if (uverb_attr->is_global) {
1653 grh = rdma_ah_read_grh(rdma_attr);
1654 memcpy(uverb_attr->dgid, grh->dgid.raw, 16);
1655 uverb_attr->flow_label = grh->flow_label;
1656 uverb_attr->sgid_index = grh->sgid_index;
1657 uverb_attr->hop_limit = grh->hop_limit;
1658 uverb_attr->traffic_class = grh->traffic_class;
1659 }
1660 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr);
1661}
1662
1663static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs)
1664{
1665 struct ib_uverbs_query_qp cmd;
1666 struct ib_uverbs_query_qp_resp resp;
1667 struct ib_qp *qp;
1668 struct ib_qp_attr *attr;
1669 struct ib_qp_init_attr *init_attr;
1670 int ret;
1671
1672 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1673 if (ret)
1674 return ret;
1675
1676 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1677 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1678 if (!attr || !init_attr) {
1679 ret = -ENOMEM;
1680 goto out;
1681 }
1682
1683 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1684 if (!qp) {
1685 ret = -EINVAL;
1686 goto out;
1687 }
1688
1689 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1690
1691 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
1692 UVERBS_LOOKUP_READ);
1693
1694 if (ret)
1695 goto out;
1696
1697 memset(&resp, 0, sizeof resp);
1698
1699 resp.qp_state = attr->qp_state;
1700 resp.cur_qp_state = attr->cur_qp_state;
1701 resp.path_mtu = attr->path_mtu;
1702 resp.path_mig_state = attr->path_mig_state;
1703 resp.qkey = attr->qkey;
1704 resp.rq_psn = attr->rq_psn;
1705 resp.sq_psn = attr->sq_psn;
1706 resp.dest_qp_num = attr->dest_qp_num;
1707 resp.qp_access_flags = attr->qp_access_flags;
1708 resp.pkey_index = attr->pkey_index;
1709 resp.alt_pkey_index = attr->alt_pkey_index;
1710 resp.sq_draining = attr->sq_draining;
1711 resp.max_rd_atomic = attr->max_rd_atomic;
1712 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1713 resp.min_rnr_timer = attr->min_rnr_timer;
1714 resp.port_num = attr->port_num;
1715 resp.timeout = attr->timeout;
1716 resp.retry_cnt = attr->retry_cnt;
1717 resp.rnr_retry = attr->rnr_retry;
1718 resp.alt_port_num = attr->alt_port_num;
1719 resp.alt_timeout = attr->alt_timeout;
1720
1721 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr);
1722 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr);
1723
1724 resp.max_send_wr = init_attr->cap.max_send_wr;
1725 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1726 resp.max_send_sge = init_attr->cap.max_send_sge;
1727 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1728 resp.max_inline_data = init_attr->cap.max_inline_data;
1729 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1730
1731 ret = uverbs_response(attrs, &resp, sizeof(resp));
1732
1733out:
1734 kfree(attr);
1735 kfree(init_attr);
1736
1737 return ret;
1738}
1739
1740/* Remove ignored fields set in the attribute mask */
1741static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1742{
1743 switch (qp_type) {
1744 case IB_QPT_XRC_INI:
1745 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1746 case IB_QPT_XRC_TGT:
1747 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1748 IB_QP_RNR_RETRY);
1749 default:
1750 return mask;
1751 }
1752}
1753
1754static void copy_ah_attr_from_uverbs(struct ib_device *dev,
1755 struct rdma_ah_attr *rdma_attr,
1756 struct ib_uverbs_qp_dest *uverb_attr)
1757{
1758 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num);
1759 if (uverb_attr->is_global) {
1760 rdma_ah_set_grh(rdma_attr, NULL,
1761 uverb_attr->flow_label,
1762 uverb_attr->sgid_index,
1763 uverb_attr->hop_limit,
1764 uverb_attr->traffic_class);
1765 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid);
1766 } else {
1767 rdma_ah_set_ah_flags(rdma_attr, 0);
1768 }
1769 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid);
1770 rdma_ah_set_sl(rdma_attr, uverb_attr->sl);
1771 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits);
1772 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate);
1773 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num);
1774 rdma_ah_set_make_grd(rdma_attr, false);
1775}
1776
1777static int modify_qp(struct uverbs_attr_bundle *attrs,
1778 struct ib_uverbs_ex_modify_qp *cmd)
1779{
1780 struct ib_qp_attr *attr;
1781 struct ib_qp *qp;
1782 int ret;
1783
1784 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1785 if (!attr)
1786 return -ENOMEM;
1787
1788 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle,
1789 attrs);
1790 if (!qp) {
1791 ret = -EINVAL;
1792 goto out;
1793 }
1794
1795 if ((cmd->base.attr_mask & IB_QP_PORT) &&
1796 !rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1797 ret = -EINVAL;
1798 goto release_qp;
1799 }
1800
1801 if ((cmd->base.attr_mask & IB_QP_AV)) {
1802 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) {
1803 ret = -EINVAL;
1804 goto release_qp;
1805 }
1806
1807 if (cmd->base.attr_mask & IB_QP_STATE &&
1808 cmd->base.qp_state == IB_QPS_RTR) {
1809 /* We are in INIT->RTR TRANSITION (if we are not,
1810 * this transition will be rejected in subsequent checks).
1811 * In the INIT->RTR transition, we cannot have IB_QP_PORT set,
1812 * but the IB_QP_STATE flag is required.
1813 *
1814 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver,
1815 * when IB_QP_AV is set, has required inclusion of a valid
1816 * port number in the primary AV. (AVs are created and handled
1817 * differently for infiniband and ethernet (RoCE) ports).
1818 *
1819 * Check the port number included in the primary AV against
1820 * the port number in the qp struct, which was set (and saved)
1821 * in the RST->INIT transition.
1822 */
1823 if (cmd->base.dest.port_num != qp->real_qp->port) {
1824 ret = -EINVAL;
1825 goto release_qp;
1826 }
1827 } else {
1828 /* We are in SQD->SQD. (If we are not, this transition will
1829 * be rejected later in the verbs layer checks).
1830 * Check for both IB_QP_PORT and IB_QP_AV, these can be set
1831 * together in the SQD->SQD transition.
1832 *
1833 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the
1834 * verbs layer driver does not track primary port changes
1835 * resulting from path migration. Thus, in SQD, if the primary
1836 * AV is modified, the primary port should also be modified).
1837 *
1838 * Note that in this transition, the IB_QP_STATE flag
1839 * is not allowed.
1840 */
1841 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1842 == (IB_QP_AV | IB_QP_PORT)) &&
1843 cmd->base.port_num != cmd->base.dest.port_num) {
1844 ret = -EINVAL;
1845 goto release_qp;
1846 }
1847 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1848 == IB_QP_AV) {
1849 cmd->base.attr_mask |= IB_QP_PORT;
1850 cmd->base.port_num = cmd->base.dest.port_num;
1851 }
1852 }
1853 }
1854
1855 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) &&
1856 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) ||
1857 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) ||
1858 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) {
1859 ret = -EINVAL;
1860 goto release_qp;
1861 }
1862
1863 if ((cmd->base.attr_mask & IB_QP_CUR_STATE &&
1864 cmd->base.cur_qp_state > IB_QPS_ERR) ||
1865 (cmd->base.attr_mask & IB_QP_STATE &&
1866 cmd->base.qp_state > IB_QPS_ERR)) {
1867 ret = -EINVAL;
1868 goto release_qp;
1869 }
1870
1871 if (cmd->base.attr_mask & IB_QP_STATE)
1872 attr->qp_state = cmd->base.qp_state;
1873 if (cmd->base.attr_mask & IB_QP_CUR_STATE)
1874 attr->cur_qp_state = cmd->base.cur_qp_state;
1875 if (cmd->base.attr_mask & IB_QP_PATH_MTU)
1876 attr->path_mtu = cmd->base.path_mtu;
1877 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE)
1878 attr->path_mig_state = cmd->base.path_mig_state;
1879 if (cmd->base.attr_mask & IB_QP_QKEY)
1880 attr->qkey = cmd->base.qkey;
1881 if (cmd->base.attr_mask & IB_QP_RQ_PSN)
1882 attr->rq_psn = cmd->base.rq_psn;
1883 if (cmd->base.attr_mask & IB_QP_SQ_PSN)
1884 attr->sq_psn = cmd->base.sq_psn;
1885 if (cmd->base.attr_mask & IB_QP_DEST_QPN)
1886 attr->dest_qp_num = cmd->base.dest_qp_num;
1887 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS)
1888 attr->qp_access_flags = cmd->base.qp_access_flags;
1889 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX)
1890 attr->pkey_index = cmd->base.pkey_index;
1891 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
1892 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
1893 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC)
1894 attr->max_rd_atomic = cmd->base.max_rd_atomic;
1895 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
1896 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
1897 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER)
1898 attr->min_rnr_timer = cmd->base.min_rnr_timer;
1899 if (cmd->base.attr_mask & IB_QP_PORT)
1900 attr->port_num = cmd->base.port_num;
1901 if (cmd->base.attr_mask & IB_QP_TIMEOUT)
1902 attr->timeout = cmd->base.timeout;
1903 if (cmd->base.attr_mask & IB_QP_RETRY_CNT)
1904 attr->retry_cnt = cmd->base.retry_cnt;
1905 if (cmd->base.attr_mask & IB_QP_RNR_RETRY)
1906 attr->rnr_retry = cmd->base.rnr_retry;
1907 if (cmd->base.attr_mask & IB_QP_ALT_PATH) {
1908 attr->alt_port_num = cmd->base.alt_port_num;
1909 attr->alt_timeout = cmd->base.alt_timeout;
1910 attr->alt_pkey_index = cmd->base.alt_pkey_index;
1911 }
1912 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT)
1913 attr->rate_limit = cmd->rate_limit;
1914
1915 if (cmd->base.attr_mask & IB_QP_AV)
1916 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,
1917 &cmd->base.dest);
1918
1919 if (cmd->base.attr_mask & IB_QP_ALT_PATH)
1920 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr,
1921 &cmd->base.alt_dest);
1922
1923 ret = ib_modify_qp_with_udata(qp, attr,
1924 modify_qp_mask(qp->qp_type,
1925 cmd->base.attr_mask),
1926 &attrs->driver_udata);
1927
1928release_qp:
1929 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
1930 UVERBS_LOOKUP_READ);
1931out:
1932 kfree(attr);
1933
1934 return ret;
1935}
1936
1937static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs)
1938{
1939 struct ib_uverbs_ex_modify_qp cmd;
1940 int ret;
1941
1942 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base));
1943 if (ret)
1944 return ret;
1945
1946 if (cmd.base.attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
1947 return -EOPNOTSUPP;
1948
1949 return modify_qp(attrs, &cmd);
1950}
1951
1952static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs)
1953{
1954 struct ib_uverbs_ex_modify_qp cmd;
1955 struct ib_uverbs_ex_modify_qp_resp resp = {
1956 .response_length = uverbs_response_length(attrs, sizeof(resp))
1957 };
1958 int ret;
1959
1960 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1961 if (ret)
1962 return ret;
1963
1964 /*
1965 * Last bit is reserved for extending the attr_mask by
1966 * using another field.
1967 */
1968 if (cmd.base.attr_mask & ~(IB_QP_ATTR_STANDARD_BITS | IB_QP_RATE_LIMIT))
1969 return -EOPNOTSUPP;
1970
1971 ret = modify_qp(attrs, &cmd);
1972 if (ret)
1973 return ret;
1974
1975 return uverbs_response(attrs, &resp, sizeof(resp));
1976}
1977
1978static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs)
1979{
1980 struct ib_uverbs_destroy_qp cmd;
1981 struct ib_uverbs_destroy_qp_resp resp;
1982 struct ib_uobject *uobj;
1983 struct ib_uqp_object *obj;
1984 int ret;
1985
1986 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1987 if (ret)
1988 return ret;
1989
1990 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1991 if (IS_ERR(uobj))
1992 return PTR_ERR(uobj);
1993
1994 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
1995 memset(&resp, 0, sizeof(resp));
1996 resp.events_reported = obj->uevent.events_reported;
1997
1998 uobj_put_destroy(uobj);
1999
2000 return uverbs_response(attrs, &resp, sizeof(resp));
2001}
2002
2003static void *alloc_wr(size_t wr_size, __u32 num_sge)
2004{
2005 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof(struct ib_sge))) /
2006 sizeof(struct ib_sge))
2007 return NULL;
2008
2009 return kmalloc(ALIGN(wr_size, sizeof(struct ib_sge)) +
2010 num_sge * sizeof(struct ib_sge),
2011 GFP_KERNEL);
2012}
2013
2014static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs)
2015{
2016 struct ib_uverbs_post_send cmd;
2017 struct ib_uverbs_post_send_resp resp;
2018 struct ib_uverbs_send_wr *user_wr;
2019 struct ib_send_wr *wr = NULL, *last, *next;
2020 const struct ib_send_wr *bad_wr;
2021 struct ib_qp *qp;
2022 int i, sg_ind;
2023 int is_ud;
2024 int ret, ret2;
2025 size_t next_size;
2026 const struct ib_sge __user *sgls;
2027 const void __user *wqes;
2028 struct uverbs_req_iter iter;
2029
2030 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2031 if (ret)
2032 return ret;
2033 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count);
2034 if (IS_ERR(wqes))
2035 return PTR_ERR(wqes);
2036 sgls = uverbs_request_next_ptr(
2037 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge));
2038 if (IS_ERR(sgls))
2039 return PTR_ERR(sgls);
2040 ret = uverbs_request_finish(&iter);
2041 if (ret)
2042 return ret;
2043
2044 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2045 if (!user_wr)
2046 return -ENOMEM;
2047
2048 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2049 if (!qp) {
2050 ret = -EINVAL;
2051 goto out;
2052 }
2053
2054 is_ud = qp->qp_type == IB_QPT_UD;
2055 sg_ind = 0;
2056 last = NULL;
2057 for (i = 0; i < cmd.wr_count; ++i) {
2058 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size,
2059 cmd.wqe_size)) {
2060 ret = -EFAULT;
2061 goto out_put;
2062 }
2063
2064 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2065 ret = -EINVAL;
2066 goto out_put;
2067 }
2068
2069 if (is_ud) {
2070 struct ib_ud_wr *ud;
2071
2072 if (user_wr->opcode != IB_WR_SEND &&
2073 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2074 ret = -EINVAL;
2075 goto out_put;
2076 }
2077
2078 next_size = sizeof(*ud);
2079 ud = alloc_wr(next_size, user_wr->num_sge);
2080 if (!ud) {
2081 ret = -ENOMEM;
2082 goto out_put;
2083 }
2084
2085 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH,
2086 user_wr->wr.ud.ah, attrs);
2087 if (!ud->ah) {
2088 kfree(ud);
2089 ret = -EINVAL;
2090 goto out_put;
2091 }
2092 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2093 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2094
2095 next = &ud->wr;
2096 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2097 user_wr->opcode == IB_WR_RDMA_WRITE ||
2098 user_wr->opcode == IB_WR_RDMA_READ) {
2099 struct ib_rdma_wr *rdma;
2100
2101 next_size = sizeof(*rdma);
2102 rdma = alloc_wr(next_size, user_wr->num_sge);
2103 if (!rdma) {
2104 ret = -ENOMEM;
2105 goto out_put;
2106 }
2107
2108 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2109 rdma->rkey = user_wr->wr.rdma.rkey;
2110
2111 next = &rdma->wr;
2112 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2113 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2114 struct ib_atomic_wr *atomic;
2115
2116 next_size = sizeof(*atomic);
2117 atomic = alloc_wr(next_size, user_wr->num_sge);
2118 if (!atomic) {
2119 ret = -ENOMEM;
2120 goto out_put;
2121 }
2122
2123 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2124 atomic->compare_add = user_wr->wr.atomic.compare_add;
2125 atomic->swap = user_wr->wr.atomic.swap;
2126 atomic->rkey = user_wr->wr.atomic.rkey;
2127
2128 next = &atomic->wr;
2129 } else if (user_wr->opcode == IB_WR_SEND ||
2130 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2131 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2132 next_size = sizeof(*next);
2133 next = alloc_wr(next_size, user_wr->num_sge);
2134 if (!next) {
2135 ret = -ENOMEM;
2136 goto out_put;
2137 }
2138 } else {
2139 ret = -EINVAL;
2140 goto out_put;
2141 }
2142
2143 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2144 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2145 next->ex.imm_data =
2146 (__be32 __force) user_wr->ex.imm_data;
2147 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2148 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2149 }
2150
2151 if (!last)
2152 wr = next;
2153 else
2154 last->next = next;
2155 last = next;
2156
2157 next->next = NULL;
2158 next->wr_id = user_wr->wr_id;
2159 next->num_sge = user_wr->num_sge;
2160 next->opcode = user_wr->opcode;
2161 next->send_flags = user_wr->send_flags;
2162
2163 if (next->num_sge) {
2164 next->sg_list = (void *) next +
2165 ALIGN(next_size, sizeof(struct ib_sge));
2166 if (copy_from_user(next->sg_list, sgls + sg_ind,
2167 next->num_sge *
2168 sizeof(struct ib_sge))) {
2169 ret = -EFAULT;
2170 goto out_put;
2171 }
2172 sg_ind += next->num_sge;
2173 } else
2174 next->sg_list = NULL;
2175 }
2176
2177 resp.bad_wr = 0;
2178 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr);
2179 if (ret)
2180 for (next = wr; next; next = next->next) {
2181 ++resp.bad_wr;
2182 if (next == bad_wr)
2183 break;
2184 }
2185
2186 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2187 if (ret2)
2188 ret = ret2;
2189
2190out_put:
2191 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2192 UVERBS_LOOKUP_READ);
2193
2194 while (wr) {
2195 if (is_ud && ud_wr(wr)->ah)
2196 uobj_put_obj_read(ud_wr(wr)->ah);
2197 next = wr->next;
2198 kfree(wr);
2199 wr = next;
2200 }
2201
2202out:
2203 kfree(user_wr);
2204
2205 return ret;
2206}
2207
2208static struct ib_recv_wr *
2209ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
2210 u32 wqe_size, u32 sge_count)
2211{
2212 struct ib_uverbs_recv_wr *user_wr;
2213 struct ib_recv_wr *wr = NULL, *last, *next;
2214 int sg_ind;
2215 int i;
2216 int ret;
2217 const struct ib_sge __user *sgls;
2218 const void __user *wqes;
2219
2220 if (wqe_size < sizeof(struct ib_uverbs_recv_wr))
2221 return ERR_PTR(-EINVAL);
2222
2223 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count);
2224 if (IS_ERR(wqes))
2225 return ERR_CAST(wqes);
2226 sgls = uverbs_request_next_ptr(
2227 iter, sge_count * sizeof(struct ib_uverbs_sge));
2228 if (IS_ERR(sgls))
2229 return ERR_CAST(sgls);
2230 ret = uverbs_request_finish(iter);
2231 if (ret)
2232 return ERR_PTR(ret);
2233
2234 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2235 if (!user_wr)
2236 return ERR_PTR(-ENOMEM);
2237
2238 sg_ind = 0;
2239 last = NULL;
2240 for (i = 0; i < wr_count; ++i) {
2241 if (copy_from_user(user_wr, wqes + i * wqe_size,
2242 wqe_size)) {
2243 ret = -EFAULT;
2244 goto err;
2245 }
2246
2247 if (user_wr->num_sge + sg_ind > sge_count) {
2248 ret = -EINVAL;
2249 goto err;
2250 }
2251
2252 if (user_wr->num_sge >=
2253 (U32_MAX - ALIGN(sizeof(*next), sizeof(struct ib_sge))) /
2254 sizeof(struct ib_sge)) {
2255 ret = -EINVAL;
2256 goto err;
2257 }
2258
2259 next = kmalloc(ALIGN(sizeof(*next), sizeof(struct ib_sge)) +
2260 user_wr->num_sge * sizeof(struct ib_sge),
2261 GFP_KERNEL);
2262 if (!next) {
2263 ret = -ENOMEM;
2264 goto err;
2265 }
2266
2267 if (!last)
2268 wr = next;
2269 else
2270 last->next = next;
2271 last = next;
2272
2273 next->next = NULL;
2274 next->wr_id = user_wr->wr_id;
2275 next->num_sge = user_wr->num_sge;
2276
2277 if (next->num_sge) {
2278 next->sg_list = (void *)next +
2279 ALIGN(sizeof(*next), sizeof(struct ib_sge));
2280 if (copy_from_user(next->sg_list, sgls + sg_ind,
2281 next->num_sge *
2282 sizeof(struct ib_sge))) {
2283 ret = -EFAULT;
2284 goto err;
2285 }
2286 sg_ind += next->num_sge;
2287 } else
2288 next->sg_list = NULL;
2289 }
2290
2291 kfree(user_wr);
2292 return wr;
2293
2294err:
2295 kfree(user_wr);
2296
2297 while (wr) {
2298 next = wr->next;
2299 kfree(wr);
2300 wr = next;
2301 }
2302
2303 return ERR_PTR(ret);
2304}
2305
2306static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs)
2307{
2308 struct ib_uverbs_post_recv cmd;
2309 struct ib_uverbs_post_recv_resp resp;
2310 struct ib_recv_wr *wr, *next;
2311 const struct ib_recv_wr *bad_wr;
2312 struct ib_qp *qp;
2313 int ret, ret2;
2314 struct uverbs_req_iter iter;
2315
2316 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2317 if (ret)
2318 return ret;
2319
2320 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2321 cmd.sge_count);
2322 if (IS_ERR(wr))
2323 return PTR_ERR(wr);
2324
2325 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2326 if (!qp) {
2327 ret = -EINVAL;
2328 goto out;
2329 }
2330
2331 resp.bad_wr = 0;
2332 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr);
2333
2334 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2335 UVERBS_LOOKUP_READ);
2336 if (ret) {
2337 for (next = wr; next; next = next->next) {
2338 ++resp.bad_wr;
2339 if (next == bad_wr)
2340 break;
2341 }
2342 }
2343
2344 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2345 if (ret2)
2346 ret = ret2;
2347out:
2348 while (wr) {
2349 next = wr->next;
2350 kfree(wr);
2351 wr = next;
2352 }
2353
2354 return ret;
2355}
2356
2357static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs)
2358{
2359 struct ib_uverbs_post_srq_recv cmd;
2360 struct ib_uverbs_post_srq_recv_resp resp;
2361 struct ib_recv_wr *wr, *next;
2362 const struct ib_recv_wr *bad_wr;
2363 struct ib_srq *srq;
2364 int ret, ret2;
2365 struct uverbs_req_iter iter;
2366
2367 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2368 if (ret)
2369 return ret;
2370
2371 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2372 cmd.sge_count);
2373 if (IS_ERR(wr))
2374 return PTR_ERR(wr);
2375
2376 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
2377 if (!srq) {
2378 ret = -EINVAL;
2379 goto out;
2380 }
2381
2382 resp.bad_wr = 0;
2383 ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr);
2384
2385 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
2386 UVERBS_LOOKUP_READ);
2387
2388 if (ret)
2389 for (next = wr; next; next = next->next) {
2390 ++resp.bad_wr;
2391 if (next == bad_wr)
2392 break;
2393 }
2394
2395 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2396 if (ret2)
2397 ret = ret2;
2398
2399out:
2400 while (wr) {
2401 next = wr->next;
2402 kfree(wr);
2403 wr = next;
2404 }
2405
2406 return ret;
2407}
2408
2409static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs)
2410{
2411 struct ib_uverbs_create_ah cmd;
2412 struct ib_uverbs_create_ah_resp resp;
2413 struct ib_uobject *uobj;
2414 struct ib_pd *pd;
2415 struct ib_ah *ah;
2416 struct rdma_ah_attr attr = {};
2417 int ret;
2418 struct ib_device *ib_dev;
2419
2420 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2421 if (ret)
2422 return ret;
2423
2424 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev);
2425 if (IS_ERR(uobj))
2426 return PTR_ERR(uobj);
2427
2428 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) {
2429 ret = -EINVAL;
2430 goto err;
2431 }
2432
2433 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2434 if (!pd) {
2435 ret = -EINVAL;
2436 goto err;
2437 }
2438
2439 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2440 rdma_ah_set_make_grd(&attr, false);
2441 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2442 rdma_ah_set_sl(&attr, cmd.attr.sl);
2443 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2444 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2445 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2446
2447 if (cmd.attr.is_global) {
2448 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2449 cmd.attr.grh.sgid_index,
2450 cmd.attr.grh.hop_limit,
2451 cmd.attr.grh.traffic_class);
2452 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2453 } else {
2454 rdma_ah_set_ah_flags(&attr, 0);
2455 }
2456
2457 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata);
2458 if (IS_ERR(ah)) {
2459 ret = PTR_ERR(ah);
2460 goto err_put;
2461 }
2462
2463 ah->uobject = uobj;
2464 uobj->user_handle = cmd.user_handle;
2465 uobj->object = ah;
2466 uobj_put_obj_read(pd);
2467 uobj_finalize_uobj_create(uobj, attrs);
2468
2469 resp.ah_handle = uobj->id;
2470 return uverbs_response(attrs, &resp, sizeof(resp));
2471
2472err_put:
2473 uobj_put_obj_read(pd);
2474err:
2475 uobj_alloc_abort(uobj, attrs);
2476 return ret;
2477}
2478
2479static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs)
2480{
2481 struct ib_uverbs_destroy_ah cmd;
2482 int ret;
2483
2484 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2485 if (ret)
2486 return ret;
2487
2488 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs);
2489}
2490
2491static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs)
2492{
2493 struct ib_uverbs_attach_mcast cmd;
2494 struct ib_qp *qp;
2495 struct ib_uqp_object *obj;
2496 struct ib_uverbs_mcast_entry *mcast;
2497 int ret;
2498
2499 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2500 if (ret)
2501 return ret;
2502
2503 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2504 if (!qp)
2505 return -EINVAL;
2506
2507 obj = qp->uobject;
2508
2509 mutex_lock(&obj->mcast_lock);
2510 list_for_each_entry(mcast, &obj->mcast_list, list)
2511 if (cmd.mlid == mcast->lid &&
2512 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2513 ret = 0;
2514 goto out_put;
2515 }
2516
2517 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2518 if (!mcast) {
2519 ret = -ENOMEM;
2520 goto out_put;
2521 }
2522
2523 mcast->lid = cmd.mlid;
2524 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2525
2526 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2527 if (!ret)
2528 list_add_tail(&mcast->list, &obj->mcast_list);
2529 else
2530 kfree(mcast);
2531
2532out_put:
2533 mutex_unlock(&obj->mcast_lock);
2534 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2535 UVERBS_LOOKUP_READ);
2536
2537 return ret;
2538}
2539
2540static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs)
2541{
2542 struct ib_uverbs_detach_mcast cmd;
2543 struct ib_uqp_object *obj;
2544 struct ib_qp *qp;
2545 struct ib_uverbs_mcast_entry *mcast;
2546 int ret;
2547 bool found = false;
2548
2549 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2550 if (ret)
2551 return ret;
2552
2553 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2554 if (!qp)
2555 return -EINVAL;
2556
2557 obj = qp->uobject;
2558 mutex_lock(&obj->mcast_lock);
2559
2560 list_for_each_entry(mcast, &obj->mcast_list, list)
2561 if (cmd.mlid == mcast->lid &&
2562 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2563 list_del(&mcast->list);
2564 kfree(mcast);
2565 found = true;
2566 break;
2567 }
2568
2569 if (!found) {
2570 ret = -EINVAL;
2571 goto out_put;
2572 }
2573
2574 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2575
2576out_put:
2577 mutex_unlock(&obj->mcast_lock);
2578 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2579 UVERBS_LOOKUP_READ);
2580 return ret;
2581}
2582
2583struct ib_uflow_resources *flow_resources_alloc(size_t num_specs)
2584{
2585 struct ib_uflow_resources *resources;
2586
2587 resources = kzalloc(sizeof(*resources), GFP_KERNEL);
2588
2589 if (!resources)
2590 return NULL;
2591
2592 if (!num_specs)
2593 goto out;
2594
2595 resources->counters =
2596 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
2597 resources->collection =
2598 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL);
2599
2600 if (!resources->counters || !resources->collection)
2601 goto err;
2602
2603out:
2604 resources->max = num_specs;
2605 return resources;
2606
2607err:
2608 kfree(resources->counters);
2609 kfree(resources);
2610
2611 return NULL;
2612}
2613EXPORT_SYMBOL(flow_resources_alloc);
2614
2615void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
2616{
2617 unsigned int i;
2618
2619 if (!uflow_res)
2620 return;
2621
2622 for (i = 0; i < uflow_res->collection_num; i++)
2623 atomic_dec(&uflow_res->collection[i]->usecnt);
2624
2625 for (i = 0; i < uflow_res->counters_num; i++)
2626 atomic_dec(&uflow_res->counters[i]->usecnt);
2627
2628 kfree(uflow_res->collection);
2629 kfree(uflow_res->counters);
2630 kfree(uflow_res);
2631}
2632EXPORT_SYMBOL(ib_uverbs_flow_resources_free);
2633
2634void flow_resources_add(struct ib_uflow_resources *uflow_res,
2635 enum ib_flow_spec_type type,
2636 void *ibobj)
2637{
2638 WARN_ON(uflow_res->num >= uflow_res->max);
2639
2640 switch (type) {
2641 case IB_FLOW_SPEC_ACTION_HANDLE:
2642 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt);
2643 uflow_res->collection[uflow_res->collection_num++] =
2644 (struct ib_flow_action *)ibobj;
2645 break;
2646 case IB_FLOW_SPEC_ACTION_COUNT:
2647 atomic_inc(&((struct ib_counters *)ibobj)->usecnt);
2648 uflow_res->counters[uflow_res->counters_num++] =
2649 (struct ib_counters *)ibobj;
2650 break;
2651 default:
2652 WARN_ON(1);
2653 }
2654
2655 uflow_res->num++;
2656}
2657EXPORT_SYMBOL(flow_resources_add);
2658
2659static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
2660 struct ib_uverbs_flow_spec *kern_spec,
2661 union ib_flow_spec *ib_spec,
2662 struct ib_uflow_resources *uflow_res)
2663{
2664 ib_spec->type = kern_spec->type;
2665 switch (ib_spec->type) {
2666 case IB_FLOW_SPEC_ACTION_TAG:
2667 if (kern_spec->flow_tag.size !=
2668 sizeof(struct ib_uverbs_flow_spec_action_tag))
2669 return -EINVAL;
2670
2671 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2672 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2673 break;
2674 case IB_FLOW_SPEC_ACTION_DROP:
2675 if (kern_spec->drop.size !=
2676 sizeof(struct ib_uverbs_flow_spec_action_drop))
2677 return -EINVAL;
2678
2679 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2680 break;
2681 case IB_FLOW_SPEC_ACTION_HANDLE:
2682 if (kern_spec->action.size !=
2683 sizeof(struct ib_uverbs_flow_spec_action_handle))
2684 return -EOPNOTSUPP;
2685 ib_spec->action.act = uobj_get_obj_read(flow_action,
2686 UVERBS_OBJECT_FLOW_ACTION,
2687 kern_spec->action.handle,
2688 attrs);
2689 if (!ib_spec->action.act)
2690 return -EINVAL;
2691 ib_spec->action.size =
2692 sizeof(struct ib_flow_spec_action_handle);
2693 flow_resources_add(uflow_res,
2694 IB_FLOW_SPEC_ACTION_HANDLE,
2695 ib_spec->action.act);
2696 uobj_put_obj_read(ib_spec->action.act);
2697 break;
2698 case IB_FLOW_SPEC_ACTION_COUNT:
2699 if (kern_spec->flow_count.size !=
2700 sizeof(struct ib_uverbs_flow_spec_action_count))
2701 return -EINVAL;
2702 ib_spec->flow_count.counters =
2703 uobj_get_obj_read(counters,
2704 UVERBS_OBJECT_COUNTERS,
2705 kern_spec->flow_count.handle,
2706 attrs);
2707 if (!ib_spec->flow_count.counters)
2708 return -EINVAL;
2709 ib_spec->flow_count.size =
2710 sizeof(struct ib_flow_spec_action_count);
2711 flow_resources_add(uflow_res,
2712 IB_FLOW_SPEC_ACTION_COUNT,
2713 ib_spec->flow_count.counters);
2714 uobj_put_obj_read(ib_spec->flow_count.counters);
2715 break;
2716 default:
2717 return -EINVAL;
2718 }
2719 return 0;
2720}
2721
2722static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
2723 u16 ib_real_filter_sz)
2724{
2725 /*
2726 * User space filter structures must be 64 bit aligned, otherwise this
2727 * may pass, but we won't handle additional new attributes.
2728 */
2729
2730 if (kern_filter_size > ib_real_filter_sz) {
2731 if (memchr_inv(kern_spec_filter +
2732 ib_real_filter_sz, 0,
2733 kern_filter_size - ib_real_filter_sz))
2734 return -EINVAL;
2735 return ib_real_filter_sz;
2736 }
2737 return kern_filter_size;
2738}
2739
2740int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
2741 const void *kern_spec_mask,
2742 const void *kern_spec_val,
2743 size_t kern_filter_sz,
2744 union ib_flow_spec *ib_spec)
2745{
2746 ssize_t actual_filter_sz;
2747 ssize_t ib_filter_sz;
2748
2749 /* User flow spec size must be aligned to 4 bytes */
2750 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2751 return -EINVAL;
2752
2753 ib_spec->type = type;
2754
2755 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2756 return -EINVAL;
2757
2758 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2759 case IB_FLOW_SPEC_ETH:
2760 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2761 actual_filter_sz = spec_filter_size(kern_spec_mask,
2762 kern_filter_sz,
2763 ib_filter_sz);
2764 if (actual_filter_sz <= 0)
2765 return -EINVAL;
2766 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2767 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2768 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2769 break;
2770 case IB_FLOW_SPEC_IPV4:
2771 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz);
2772 actual_filter_sz = spec_filter_size(kern_spec_mask,
2773 kern_filter_sz,
2774 ib_filter_sz);
2775 if (actual_filter_sz <= 0)
2776 return -EINVAL;
2777 ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
2778 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2779 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2780 break;
2781 case IB_FLOW_SPEC_IPV6:
2782 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz);
2783 actual_filter_sz = spec_filter_size(kern_spec_mask,
2784 kern_filter_sz,
2785 ib_filter_sz);
2786 if (actual_filter_sz <= 0)
2787 return -EINVAL;
2788 ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
2789 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2790 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2791
2792 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2793 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2794 return -EINVAL;
2795 break;
2796 case IB_FLOW_SPEC_TCP:
2797 case IB_FLOW_SPEC_UDP:
2798 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
2799 actual_filter_sz = spec_filter_size(kern_spec_mask,
2800 kern_filter_sz,
2801 ib_filter_sz);
2802 if (actual_filter_sz <= 0)
2803 return -EINVAL;
2804 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2805 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2806 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2807 break;
2808 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2809 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz);
2810 actual_filter_sz = spec_filter_size(kern_spec_mask,
2811 kern_filter_sz,
2812 ib_filter_sz);
2813 if (actual_filter_sz <= 0)
2814 return -EINVAL;
2815 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2816 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2817 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2818
2819 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2820 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2821 return -EINVAL;
2822 break;
2823 case IB_FLOW_SPEC_ESP:
2824 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz);
2825 actual_filter_sz = spec_filter_size(kern_spec_mask,
2826 kern_filter_sz,
2827 ib_filter_sz);
2828 if (actual_filter_sz <= 0)
2829 return -EINVAL;
2830 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp);
2831 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz);
2832 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz);
2833 break;
2834 case IB_FLOW_SPEC_GRE:
2835 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz);
2836 actual_filter_sz = spec_filter_size(kern_spec_mask,
2837 kern_filter_sz,
2838 ib_filter_sz);
2839 if (actual_filter_sz <= 0)
2840 return -EINVAL;
2841 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre);
2842 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz);
2843 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz);
2844 break;
2845 case IB_FLOW_SPEC_MPLS:
2846 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz);
2847 actual_filter_sz = spec_filter_size(kern_spec_mask,
2848 kern_filter_sz,
2849 ib_filter_sz);
2850 if (actual_filter_sz <= 0)
2851 return -EINVAL;
2852 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls);
2853 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz);
2854 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz);
2855 break;
2856 default:
2857 return -EINVAL;
2858 }
2859 return 0;
2860}
2861
2862static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2863 union ib_flow_spec *ib_spec)
2864{
2865 size_t kern_filter_sz;
2866 void *kern_spec_mask;
2867 void *kern_spec_val;
2868
2869 if (check_sub_overflow((size_t)kern_spec->hdr.size,
2870 sizeof(struct ib_uverbs_flow_spec_hdr),
2871 &kern_filter_sz))
2872 return -EINVAL;
2873
2874 kern_filter_sz /= 2;
2875
2876 kern_spec_val = (void *)kern_spec +
2877 sizeof(struct ib_uverbs_flow_spec_hdr);
2878 kern_spec_mask = kern_spec_val + kern_filter_sz;
2879
2880 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
2881 kern_spec_mask,
2882 kern_spec_val,
2883 kern_filter_sz, ib_spec);
2884}
2885
2886static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs,
2887 struct ib_uverbs_flow_spec *kern_spec,
2888 union ib_flow_spec *ib_spec,
2889 struct ib_uflow_resources *uflow_res)
2890{
2891 if (kern_spec->reserved)
2892 return -EINVAL;
2893
2894 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2895 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec,
2896 uflow_res);
2897 else
2898 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2899}
2900
2901static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs)
2902{
2903 struct ib_uverbs_ex_create_wq cmd;
2904 struct ib_uverbs_ex_create_wq_resp resp = {};
2905 struct ib_uwq_object *obj;
2906 int err = 0;
2907 struct ib_cq *cq;
2908 struct ib_pd *pd;
2909 struct ib_wq *wq;
2910 struct ib_wq_init_attr wq_init_attr = {};
2911 struct ib_device *ib_dev;
2912
2913 err = uverbs_request(attrs, &cmd, sizeof(cmd));
2914 if (err)
2915 return err;
2916
2917 if (cmd.comp_mask)
2918 return -EOPNOTSUPP;
2919
2920 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs,
2921 &ib_dev);
2922 if (IS_ERR(obj))
2923 return PTR_ERR(obj);
2924
2925 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2926 if (!pd) {
2927 err = -EINVAL;
2928 goto err_uobj;
2929 }
2930
2931 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
2932 if (!cq) {
2933 err = -EINVAL;
2934 goto err_put_pd;
2935 }
2936
2937 wq_init_attr.cq = cq;
2938 wq_init_attr.max_sge = cmd.max_sge;
2939 wq_init_attr.max_wr = cmd.max_wr;
2940 wq_init_attr.wq_type = cmd.wq_type;
2941 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2942 wq_init_attr.create_flags = cmd.create_flags;
2943 INIT_LIST_HEAD(&obj->uevent.event_list);
2944 obj->uevent.uobject.user_handle = cmd.user_handle;
2945
2946 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata);
2947 if (IS_ERR(wq)) {
2948 err = PTR_ERR(wq);
2949 goto err_put_cq;
2950 }
2951
2952 wq->uobject = obj;
2953 obj->uevent.uobject.object = wq;
2954 wq->wq_type = wq_init_attr.wq_type;
2955 wq->cq = cq;
2956 wq->pd = pd;
2957 wq->device = pd->device;
2958 atomic_set(&wq->usecnt, 0);
2959 atomic_inc(&pd->usecnt);
2960 atomic_inc(&cq->usecnt);
2961 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
2962 if (obj->uevent.event_file)
2963 uverbs_uobject_get(&obj->uevent.event_file->uobj);
2964
2965 uobj_put_obj_read(pd);
2966 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2967 UVERBS_LOOKUP_READ);
2968 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
2969
2970 resp.wq_handle = obj->uevent.uobject.id;
2971 resp.max_sge = wq_init_attr.max_sge;
2972 resp.max_wr = wq_init_attr.max_wr;
2973 resp.wqn = wq->wq_num;
2974 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2975 return uverbs_response(attrs, &resp, sizeof(resp));
2976
2977err_put_cq:
2978 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2979 UVERBS_LOOKUP_READ);
2980err_put_pd:
2981 uobj_put_obj_read(pd);
2982err_uobj:
2983 uobj_alloc_abort(&obj->uevent.uobject, attrs);
2984
2985 return err;
2986}
2987
2988static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs)
2989{
2990 struct ib_uverbs_ex_destroy_wq cmd;
2991 struct ib_uverbs_ex_destroy_wq_resp resp = {};
2992 struct ib_uobject *uobj;
2993 struct ib_uwq_object *obj;
2994 int ret;
2995
2996 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2997 if (ret)
2998 return ret;
2999
3000 if (cmd.comp_mask)
3001 return -EOPNOTSUPP;
3002
3003 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3004 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3005 if (IS_ERR(uobj))
3006 return PTR_ERR(uobj);
3007
3008 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
3009 resp.events_reported = obj->uevent.events_reported;
3010
3011 uobj_put_destroy(uobj);
3012
3013 return uverbs_response(attrs, &resp, sizeof(resp));
3014}
3015
3016static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs)
3017{
3018 struct ib_uverbs_ex_modify_wq cmd;
3019 struct ib_wq *wq;
3020 struct ib_wq_attr wq_attr = {};
3021 int ret;
3022
3023 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3024 if (ret)
3025 return ret;
3026
3027 if (!cmd.attr_mask)
3028 return -EINVAL;
3029
3030 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3031 return -EINVAL;
3032
3033 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3034 if (!wq)
3035 return -EINVAL;
3036
3037 if (cmd.attr_mask & IB_WQ_FLAGS) {
3038 wq_attr.flags = cmd.flags;
3039 wq_attr.flags_mask = cmd.flags_mask;
3040 }
3041
3042 if (cmd.attr_mask & IB_WQ_CUR_STATE) {
3043 if (cmd.curr_wq_state > IB_WQS_ERR)
3044 return -EINVAL;
3045
3046 wq_attr.curr_wq_state = cmd.curr_wq_state;
3047 } else {
3048 wq_attr.curr_wq_state = wq->state;
3049 }
3050
3051 if (cmd.attr_mask & IB_WQ_STATE) {
3052 if (cmd.wq_state > IB_WQS_ERR)
3053 return -EINVAL;
3054
3055 wq_attr.wq_state = cmd.wq_state;
3056 } else {
3057 wq_attr.wq_state = wq_attr.curr_wq_state;
3058 }
3059
3060 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask,
3061 &attrs->driver_udata);
3062 rdma_lookup_put_uobject(&wq->uobject->uevent.uobject,
3063 UVERBS_LOOKUP_READ);
3064 return ret;
3065}
3066
3067static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3068{
3069 struct ib_uverbs_ex_create_rwq_ind_table cmd;
3070 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3071 struct ib_uobject *uobj;
3072 int err;
3073 struct ib_rwq_ind_table_init_attr init_attr = {};
3074 struct ib_rwq_ind_table *rwq_ind_tbl;
3075 struct ib_wq **wqs = NULL;
3076 u32 *wqs_handles = NULL;
3077 struct ib_wq *wq = NULL;
3078 int i, num_read_wqs;
3079 u32 num_wq_handles;
3080 struct uverbs_req_iter iter;
3081 struct ib_device *ib_dev;
3082
3083 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3084 if (err)
3085 return err;
3086
3087 if (cmd.comp_mask)
3088 return -EOPNOTSUPP;
3089
3090 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3091 return -EINVAL;
3092
3093 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3094 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3095 GFP_KERNEL);
3096 if (!wqs_handles)
3097 return -ENOMEM;
3098
3099 err = uverbs_request_next(&iter, wqs_handles,
3100 num_wq_handles * sizeof(__u32));
3101 if (err)
3102 goto err_free;
3103
3104 err = uverbs_request_finish(&iter);
3105 if (err)
3106 goto err_free;
3107
3108 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3109 if (!wqs) {
3110 err = -ENOMEM;
3111 goto err_free;
3112 }
3113
3114 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3115 num_read_wqs++) {
3116 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ,
3117 wqs_handles[num_read_wqs], attrs);
3118 if (!wq) {
3119 err = -EINVAL;
3120 goto put_wqs;
3121 }
3122
3123 wqs[num_read_wqs] = wq;
3124 atomic_inc(&wqs[num_read_wqs]->usecnt);
3125 }
3126
3127 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev);
3128 if (IS_ERR(uobj)) {
3129 err = PTR_ERR(uobj);
3130 goto put_wqs;
3131 }
3132
3133 rwq_ind_tbl = rdma_zalloc_drv_obj(ib_dev, ib_rwq_ind_table);
3134 if (!rwq_ind_tbl) {
3135 err = -ENOMEM;
3136 goto err_uobj;
3137 }
3138
3139 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3140 init_attr.ind_tbl = wqs;
3141
3142 rwq_ind_tbl->ind_tbl = wqs;
3143 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3144 rwq_ind_tbl->uobject = uobj;
3145 uobj->object = rwq_ind_tbl;
3146 rwq_ind_tbl->device = ib_dev;
3147 atomic_set(&rwq_ind_tbl->usecnt, 0);
3148
3149 err = ib_dev->ops.create_rwq_ind_table(rwq_ind_tbl, &init_attr,
3150 &attrs->driver_udata);
3151 if (err)
3152 goto err_create;
3153
3154 for (i = 0; i < num_wq_handles; i++)
3155 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3156 UVERBS_LOOKUP_READ);
3157 kfree(wqs_handles);
3158 uobj_finalize_uobj_create(uobj, attrs);
3159
3160 resp.ind_tbl_handle = uobj->id;
3161 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3162 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3163 return uverbs_response(attrs, &resp, sizeof(resp));
3164
3165err_create:
3166 kfree(rwq_ind_tbl);
3167err_uobj:
3168 uobj_alloc_abort(uobj, attrs);
3169put_wqs:
3170 for (i = 0; i < num_read_wqs; i++) {
3171 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3172 UVERBS_LOOKUP_READ);
3173 atomic_dec(&wqs[i]->usecnt);
3174 }
3175err_free:
3176 kfree(wqs_handles);
3177 kfree(wqs);
3178 return err;
3179}
3180
3181static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3182{
3183 struct ib_uverbs_ex_destroy_rwq_ind_table cmd;
3184 int ret;
3185
3186 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3187 if (ret)
3188 return ret;
3189
3190 if (cmd.comp_mask)
3191 return -EOPNOTSUPP;
3192
3193 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL,
3194 cmd.ind_tbl_handle, attrs);
3195}
3196
3197static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs)
3198{
3199 struct ib_uverbs_create_flow cmd;
3200 struct ib_uverbs_create_flow_resp resp = {};
3201 struct ib_uobject *uobj;
3202 struct ib_flow *flow_id;
3203 struct ib_uverbs_flow_attr *kern_flow_attr;
3204 struct ib_flow_attr *flow_attr;
3205 struct ib_qp *qp;
3206 struct ib_uflow_resources *uflow_res;
3207 struct ib_uverbs_flow_spec_hdr *kern_spec;
3208 struct uverbs_req_iter iter;
3209 int err;
3210 void *ib_spec;
3211 int i;
3212 struct ib_device *ib_dev;
3213
3214 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3215 if (err)
3216 return err;
3217
3218 if (cmd.comp_mask)
3219 return -EINVAL;
3220
3221 if (!capable(CAP_NET_RAW))
3222 return -EPERM;
3223
3224 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3225 return -EINVAL;
3226
3227 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3228 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3229 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3230 return -EINVAL;
3231
3232 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3233 return -EINVAL;
3234
3235 if (cmd.flow_attr.size >
3236 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3237 return -EINVAL;
3238
3239 if (cmd.flow_attr.reserved[0] ||
3240 cmd.flow_attr.reserved[1])
3241 return -EINVAL;
3242
3243 if (cmd.flow_attr.num_of_specs) {
3244 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3245 GFP_KERNEL);
3246 if (!kern_flow_attr)
3247 return -ENOMEM;
3248
3249 *kern_flow_attr = cmd.flow_attr;
3250 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs,
3251 cmd.flow_attr.size);
3252 if (err)
3253 goto err_free_attr;
3254 } else {
3255 kern_flow_attr = &cmd.flow_attr;
3256 }
3257
3258 err = uverbs_request_finish(&iter);
3259 if (err)
3260 goto err_free_attr;
3261
3262 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev);
3263 if (IS_ERR(uobj)) {
3264 err = PTR_ERR(uobj);
3265 goto err_free_attr;
3266 }
3267
3268 if (!rdma_is_port_valid(uobj->context->device, cmd.flow_attr.port)) {
3269 err = -EINVAL;
3270 goto err_uobj;
3271 }
3272
3273 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
3274 if (!qp) {
3275 err = -EINVAL;
3276 goto err_uobj;
3277 }
3278
3279 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) {
3280 err = -EINVAL;
3281 goto err_put;
3282 }
3283
3284 flow_attr = kzalloc(struct_size(flow_attr, flows,
3285 cmd.flow_attr.num_of_specs), GFP_KERNEL);
3286 if (!flow_attr) {
3287 err = -ENOMEM;
3288 goto err_put;
3289 }
3290 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs);
3291 if (!uflow_res) {
3292 err = -ENOMEM;
3293 goto err_free_flow_attr;
3294 }
3295
3296 flow_attr->type = kern_flow_attr->type;
3297 flow_attr->priority = kern_flow_attr->priority;
3298 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3299 flow_attr->port = kern_flow_attr->port;
3300 flow_attr->flags = kern_flow_attr->flags;
3301 flow_attr->size = sizeof(*flow_attr);
3302
3303 kern_spec = kern_flow_attr->flow_specs;
3304 ib_spec = flow_attr + 1;
3305 for (i = 0; i < flow_attr->num_of_specs &&
3306 cmd.flow_attr.size >= sizeof(*kern_spec) &&
3307 cmd.flow_attr.size >= kern_spec->size;
3308 i++) {
3309 err = kern_spec_to_ib_spec(
3310 attrs, (struct ib_uverbs_flow_spec *)kern_spec,
3311 ib_spec, uflow_res);
3312 if (err)
3313 goto err_free;
3314
3315 flow_attr->size +=
3316 ((union ib_flow_spec *) ib_spec)->size;
3317 cmd.flow_attr.size -= kern_spec->size;
3318 kern_spec = ((void *)kern_spec) + kern_spec->size;
3319 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3320 }
3321 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3322 pr_warn("create flow failed, flow %d: %u bytes left from uverb cmd\n",
3323 i, cmd.flow_attr.size);
3324 err = -EINVAL;
3325 goto err_free;
3326 }
3327
3328 flow_id = qp->device->ops.create_flow(qp, flow_attr,
3329 &attrs->driver_udata);
3330
3331 if (IS_ERR(flow_id)) {
3332 err = PTR_ERR(flow_id);
3333 goto err_free;
3334 }
3335
3336 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res);
3337
3338 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3339 UVERBS_LOOKUP_READ);
3340 kfree(flow_attr);
3341
3342 if (cmd.flow_attr.num_of_specs)
3343 kfree(kern_flow_attr);
3344 uobj_finalize_uobj_create(uobj, attrs);
3345
3346 resp.flow_handle = uobj->id;
3347 return uverbs_response(attrs, &resp, sizeof(resp));
3348
3349err_free:
3350 ib_uverbs_flow_resources_free(uflow_res);
3351err_free_flow_attr:
3352 kfree(flow_attr);
3353err_put:
3354 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3355 UVERBS_LOOKUP_READ);
3356err_uobj:
3357 uobj_alloc_abort(uobj, attrs);
3358err_free_attr:
3359 if (cmd.flow_attr.num_of_specs)
3360 kfree(kern_flow_attr);
3361 return err;
3362}
3363
3364static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs)
3365{
3366 struct ib_uverbs_destroy_flow cmd;
3367 int ret;
3368
3369 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3370 if (ret)
3371 return ret;
3372
3373 if (cmd.comp_mask)
3374 return -EINVAL;
3375
3376 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs);
3377}
3378
3379static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs,
3380 struct ib_uverbs_create_xsrq *cmd,
3381 struct ib_udata *udata)
3382{
3383 struct ib_uverbs_create_srq_resp resp = {};
3384 struct ib_usrq_object *obj;
3385 struct ib_pd *pd;
3386 struct ib_srq *srq;
3387 struct ib_srq_init_attr attr;
3388 int ret;
3389 struct ib_uobject *xrcd_uobj;
3390 struct ib_device *ib_dev;
3391
3392 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs,
3393 &ib_dev);
3394 if (IS_ERR(obj))
3395 return PTR_ERR(obj);
3396
3397 if (cmd->srq_type == IB_SRQT_TM)
3398 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
3399
3400 if (cmd->srq_type == IB_SRQT_XRC) {
3401 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle,
3402 attrs);
3403 if (IS_ERR(xrcd_uobj)) {
3404 ret = -EINVAL;
3405 goto err;
3406 }
3407
3408 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3409 if (!attr.ext.xrc.xrcd) {
3410 ret = -EINVAL;
3411 goto err_put_xrcd;
3412 }
3413
3414 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3415 atomic_inc(&obj->uxrcd->refcnt);
3416 }
3417
3418 if (ib_srq_has_cq(cmd->srq_type)) {
3419 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
3420 cmd->cq_handle, attrs);
3421 if (!attr.ext.cq) {
3422 ret = -EINVAL;
3423 goto err_put_xrcd;
3424 }
3425 }
3426
3427 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs);
3428 if (!pd) {
3429 ret = -EINVAL;
3430 goto err_put_cq;
3431 }
3432
3433 attr.event_handler = ib_uverbs_srq_event_handler;
3434 attr.srq_type = cmd->srq_type;
3435 attr.attr.max_wr = cmd->max_wr;
3436 attr.attr.max_sge = cmd->max_sge;
3437 attr.attr.srq_limit = cmd->srq_limit;
3438
3439 INIT_LIST_HEAD(&obj->uevent.event_list);
3440 obj->uevent.uobject.user_handle = cmd->user_handle;
3441
3442 srq = ib_create_srq_user(pd, &attr, obj, udata);
3443 if (IS_ERR(srq)) {
3444 ret = PTR_ERR(srq);
3445 goto err_put_pd;
3446 }
3447
3448 obj->uevent.uobject.object = srq;
3449 obj->uevent.uobject.user_handle = cmd->user_handle;
3450 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
3451 if (obj->uevent.event_file)
3452 uverbs_uobject_get(&obj->uevent.event_file->uobj);
3453
3454 if (cmd->srq_type == IB_SRQT_XRC)
3455 resp.srqn = srq->ext.xrc.srq_num;
3456
3457 if (cmd->srq_type == IB_SRQT_XRC)
3458 uobj_put_read(xrcd_uobj);
3459
3460 if (ib_srq_has_cq(cmd->srq_type))
3461 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3462 UVERBS_LOOKUP_READ);
3463
3464 uobj_put_obj_read(pd);
3465 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
3466
3467 resp.srq_handle = obj->uevent.uobject.id;
3468 resp.max_wr = attr.attr.max_wr;
3469 resp.max_sge = attr.attr.max_sge;
3470 return uverbs_response(attrs, &resp, sizeof(resp));
3471
3472err_put_pd:
3473 uobj_put_obj_read(pd);
3474err_put_cq:
3475 if (ib_srq_has_cq(cmd->srq_type))
3476 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3477 UVERBS_LOOKUP_READ);
3478
3479err_put_xrcd:
3480 if (cmd->srq_type == IB_SRQT_XRC) {
3481 atomic_dec(&obj->uxrcd->refcnt);
3482 uobj_put_read(xrcd_uobj);
3483 }
3484
3485err:
3486 uobj_alloc_abort(&obj->uevent.uobject, attrs);
3487 return ret;
3488}
3489
3490static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs)
3491{
3492 struct ib_uverbs_create_srq cmd;
3493 struct ib_uverbs_create_xsrq xcmd;
3494 int ret;
3495
3496 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3497 if (ret)
3498 return ret;
3499
3500 memset(&xcmd, 0, sizeof(xcmd));
3501 xcmd.response = cmd.response;
3502 xcmd.user_handle = cmd.user_handle;
3503 xcmd.srq_type = IB_SRQT_BASIC;
3504 xcmd.pd_handle = cmd.pd_handle;
3505 xcmd.max_wr = cmd.max_wr;
3506 xcmd.max_sge = cmd.max_sge;
3507 xcmd.srq_limit = cmd.srq_limit;
3508
3509 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata);
3510}
3511
3512static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs)
3513{
3514 struct ib_uverbs_create_xsrq cmd;
3515 int ret;
3516
3517 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3518 if (ret)
3519 return ret;
3520
3521 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata);
3522}
3523
3524static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs)
3525{
3526 struct ib_uverbs_modify_srq cmd;
3527 struct ib_srq *srq;
3528 struct ib_srq_attr attr;
3529 int ret;
3530
3531 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3532 if (ret)
3533 return ret;
3534
3535 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3536 if (!srq)
3537 return -EINVAL;
3538
3539 attr.max_wr = cmd.max_wr;
3540 attr.srq_limit = cmd.srq_limit;
3541
3542 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask,
3543 &attrs->driver_udata);
3544
3545 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3546 UVERBS_LOOKUP_READ);
3547
3548 return ret;
3549}
3550
3551static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs)
3552{
3553 struct ib_uverbs_query_srq cmd;
3554 struct ib_uverbs_query_srq_resp resp;
3555 struct ib_srq_attr attr;
3556 struct ib_srq *srq;
3557 int ret;
3558
3559 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3560 if (ret)
3561 return ret;
3562
3563 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3564 if (!srq)
3565 return -EINVAL;
3566
3567 ret = ib_query_srq(srq, &attr);
3568
3569 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3570 UVERBS_LOOKUP_READ);
3571
3572 if (ret)
3573 return ret;
3574
3575 memset(&resp, 0, sizeof resp);
3576
3577 resp.max_wr = attr.max_wr;
3578 resp.max_sge = attr.max_sge;
3579 resp.srq_limit = attr.srq_limit;
3580
3581 return uverbs_response(attrs, &resp, sizeof(resp));
3582}
3583
3584static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs)
3585{
3586 struct ib_uverbs_destroy_srq cmd;
3587 struct ib_uverbs_destroy_srq_resp resp;
3588 struct ib_uobject *uobj;
3589 struct ib_uevent_object *obj;
3590 int ret;
3591
3592 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3593 if (ret)
3594 return ret;
3595
3596 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3597 if (IS_ERR(uobj))
3598 return PTR_ERR(uobj);
3599
3600 obj = container_of(uobj, struct ib_uevent_object, uobject);
3601 memset(&resp, 0, sizeof(resp));
3602 resp.events_reported = obj->events_reported;
3603
3604 uobj_put_destroy(uobj);
3605
3606 return uverbs_response(attrs, &resp, sizeof(resp));
3607}
3608
3609static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs)
3610{
3611 struct ib_uverbs_ex_query_device_resp resp = {};
3612 struct ib_uverbs_ex_query_device cmd;
3613 struct ib_device_attr attr = {0};
3614 struct ib_ucontext *ucontext;
3615 struct ib_device *ib_dev;
3616 int err;
3617
3618 ucontext = ib_uverbs_get_ucontext(attrs);
3619 if (IS_ERR(ucontext))
3620 return PTR_ERR(ucontext);
3621 ib_dev = ucontext->device;
3622
3623 err = uverbs_request(attrs, &cmd, sizeof(cmd));
3624 if (err)
3625 return err;
3626
3627 if (cmd.comp_mask)
3628 return -EINVAL;
3629
3630 if (cmd.reserved)
3631 return -EINVAL;
3632
3633 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata);
3634 if (err)
3635 return err;
3636
3637 copy_query_dev_fields(ucontext, &resp.base, &attr);
3638
3639 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3640 resp.odp_caps.per_transport_caps.rc_odp_caps =
3641 attr.odp_caps.per_transport_caps.rc_odp_caps;
3642 resp.odp_caps.per_transport_caps.uc_odp_caps =
3643 attr.odp_caps.per_transport_caps.uc_odp_caps;
3644 resp.odp_caps.per_transport_caps.ud_odp_caps =
3645 attr.odp_caps.per_transport_caps.ud_odp_caps;
3646 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps;
3647
3648 resp.timestamp_mask = attr.timestamp_mask;
3649 resp.hca_core_clock = attr.hca_core_clock;
3650 resp.device_cap_flags_ex = attr.device_cap_flags;
3651 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3652 resp.rss_caps.max_rwq_indirection_tables =
3653 attr.rss_caps.max_rwq_indirection_tables;
3654 resp.rss_caps.max_rwq_indirection_table_size =
3655 attr.rss_caps.max_rwq_indirection_table_size;
3656 resp.max_wq_type_rq = attr.max_wq_type_rq;
3657 resp.raw_packet_caps = attr.raw_packet_caps;
3658 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size;
3659 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags;
3660 resp.tm_caps.max_ops = attr.tm_caps.max_ops;
3661 resp.tm_caps.max_sge = attr.tm_caps.max_sge;
3662 resp.tm_caps.flags = attr.tm_caps.flags;
3663 resp.cq_moderation_caps.max_cq_moderation_count =
3664 attr.cq_caps.max_cq_moderation_count;
3665 resp.cq_moderation_caps.max_cq_moderation_period =
3666 attr.cq_caps.max_cq_moderation_period;
3667 resp.max_dm_size = attr.max_dm_size;
3668 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3669
3670 return uverbs_response(attrs, &resp, sizeof(resp));
3671}
3672
3673static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs)
3674{
3675 struct ib_uverbs_ex_modify_cq cmd;
3676 struct ib_cq *cq;
3677 int ret;
3678
3679 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3680 if (ret)
3681 return ret;
3682
3683 if (!cmd.attr_mask || cmd.reserved)
3684 return -EINVAL;
3685
3686 if (cmd.attr_mask > IB_CQ_MODERATE)
3687 return -EOPNOTSUPP;
3688
3689 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
3690 if (!cq)
3691 return -EINVAL;
3692
3693 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period);
3694
3695 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
3696 UVERBS_LOOKUP_READ);
3697 return ret;
3698}
3699
3700/*
3701 * Describe the input structs for write(). Some write methods have an input
3702 * only struct, most have an input and output. If the struct has an output then
3703 * the 'response' u64 must be the first field in the request structure.
3704 *
3705 * If udata is present then both the request and response structs have a
3706 * trailing driver_data flex array. In this case the size of the base struct
3707 * cannot be changed.
3708 */
3709#define UAPI_DEF_WRITE_IO(req, resp) \
3710 .write.has_resp = 1 + \
3711 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \
3712 BUILD_BUG_ON_ZERO(sizeof_field(req, response) != \
3713 sizeof(u64)), \
3714 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp)
3715
3716#define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req)
3717
3718#define UAPI_DEF_WRITE_UDATA_IO(req, resp) \
3719 UAPI_DEF_WRITE_IO(req, resp), \
3720 .write.has_udata = \
3721 1 + \
3722 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3723 sizeof(req)) + \
3724 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \
3725 sizeof(resp))
3726
3727#define UAPI_DEF_WRITE_UDATA_I(req) \
3728 UAPI_DEF_WRITE_I(req), \
3729 .write.has_udata = \
3730 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3731 sizeof(req))
3732
3733/*
3734 * The _EX versions are for use with WRITE_EX and allow the last struct member
3735 * to be specified. Buffers that do not include that member will be rejected.
3736 */
3737#define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \
3738 .write.has_resp = 1, \
3739 .write.req_size = offsetofend(req, req_last_member), \
3740 .write.resp_size = offsetofend(resp, resp_last_member)
3741
3742#define UAPI_DEF_WRITE_I_EX(req, req_last_member) \
3743 .write.req_size = offsetofend(req, req_last_member)
3744
3745const struct uapi_definition uverbs_def_write_intf[] = {
3746 DECLARE_UVERBS_OBJECT(
3747 UVERBS_OBJECT_AH,
3748 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH,
3749 ib_uverbs_create_ah,
3750 UAPI_DEF_WRITE_UDATA_IO(
3751 struct ib_uverbs_create_ah,
3752 struct ib_uverbs_create_ah_resp)),
3753 DECLARE_UVERBS_WRITE(
3754 IB_USER_VERBS_CMD_DESTROY_AH,
3755 ib_uverbs_destroy_ah,
3756 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah)),
3757 UAPI_DEF_OBJ_NEEDS_FN(create_user_ah),
3758 UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)),
3759
3760 DECLARE_UVERBS_OBJECT(
3761 UVERBS_OBJECT_COMP_CHANNEL,
3762 DECLARE_UVERBS_WRITE(
3763 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
3764 ib_uverbs_create_comp_channel,
3765 UAPI_DEF_WRITE_IO(
3766 struct ib_uverbs_create_comp_channel,
3767 struct ib_uverbs_create_comp_channel_resp))),
3768
3769 DECLARE_UVERBS_OBJECT(
3770 UVERBS_OBJECT_CQ,
3771 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ,
3772 ib_uverbs_create_cq,
3773 UAPI_DEF_WRITE_UDATA_IO(
3774 struct ib_uverbs_create_cq,
3775 struct ib_uverbs_create_cq_resp),
3776 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3777 DECLARE_UVERBS_WRITE(
3778 IB_USER_VERBS_CMD_DESTROY_CQ,
3779 ib_uverbs_destroy_cq,
3780 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq,
3781 struct ib_uverbs_destroy_cq_resp),
3782 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)),
3783 DECLARE_UVERBS_WRITE(
3784 IB_USER_VERBS_CMD_POLL_CQ,
3785 ib_uverbs_poll_cq,
3786 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq,
3787 struct ib_uverbs_poll_cq_resp),
3788 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)),
3789 DECLARE_UVERBS_WRITE(
3790 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
3791 ib_uverbs_req_notify_cq,
3792 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq),
3793 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)),
3794 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ,
3795 ib_uverbs_resize_cq,
3796 UAPI_DEF_WRITE_UDATA_IO(
3797 struct ib_uverbs_resize_cq,
3798 struct ib_uverbs_resize_cq_resp),
3799 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)),
3800 DECLARE_UVERBS_WRITE_EX(
3801 IB_USER_VERBS_EX_CMD_CREATE_CQ,
3802 ib_uverbs_ex_create_cq,
3803 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq,
3804 reserved,
3805 struct ib_uverbs_ex_create_cq_resp,
3806 response_length),
3807 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3808 DECLARE_UVERBS_WRITE_EX(
3809 IB_USER_VERBS_EX_CMD_MODIFY_CQ,
3810 ib_uverbs_ex_modify_cq,
3811 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq),
3812 UAPI_DEF_METHOD_NEEDS_FN(modify_cq))),
3813
3814 DECLARE_UVERBS_OBJECT(
3815 UVERBS_OBJECT_DEVICE,
3816 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT,
3817 ib_uverbs_get_context,
3818 UAPI_DEF_WRITE_UDATA_IO(
3819 struct ib_uverbs_get_context,
3820 struct ib_uverbs_get_context_resp)),
3821 DECLARE_UVERBS_WRITE(
3822 IB_USER_VERBS_CMD_QUERY_DEVICE,
3823 ib_uverbs_query_device,
3824 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device,
3825 struct ib_uverbs_query_device_resp)),
3826 DECLARE_UVERBS_WRITE(
3827 IB_USER_VERBS_CMD_QUERY_PORT,
3828 ib_uverbs_query_port,
3829 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port,
3830 struct ib_uverbs_query_port_resp),
3831 UAPI_DEF_METHOD_NEEDS_FN(query_port)),
3832 DECLARE_UVERBS_WRITE_EX(
3833 IB_USER_VERBS_EX_CMD_QUERY_DEVICE,
3834 ib_uverbs_ex_query_device,
3835 UAPI_DEF_WRITE_IO_EX(
3836 struct ib_uverbs_ex_query_device,
3837 reserved,
3838 struct ib_uverbs_ex_query_device_resp,
3839 response_length),
3840 UAPI_DEF_METHOD_NEEDS_FN(query_device)),
3841 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext),
3842 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)),
3843
3844 DECLARE_UVERBS_OBJECT(
3845 UVERBS_OBJECT_FLOW,
3846 DECLARE_UVERBS_WRITE_EX(
3847 IB_USER_VERBS_EX_CMD_CREATE_FLOW,
3848 ib_uverbs_ex_create_flow,
3849 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow,
3850 flow_attr,
3851 struct ib_uverbs_create_flow_resp,
3852 flow_handle),
3853 UAPI_DEF_METHOD_NEEDS_FN(create_flow)),
3854 DECLARE_UVERBS_WRITE_EX(
3855 IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
3856 ib_uverbs_ex_destroy_flow,
3857 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow),
3858 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))),
3859
3860 DECLARE_UVERBS_OBJECT(
3861 UVERBS_OBJECT_MR,
3862 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR,
3863 ib_uverbs_dereg_mr,
3864 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr),
3865 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)),
3866 DECLARE_UVERBS_WRITE(
3867 IB_USER_VERBS_CMD_REG_MR,
3868 ib_uverbs_reg_mr,
3869 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr,
3870 struct ib_uverbs_reg_mr_resp),
3871 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)),
3872 DECLARE_UVERBS_WRITE(
3873 IB_USER_VERBS_CMD_REREG_MR,
3874 ib_uverbs_rereg_mr,
3875 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr,
3876 struct ib_uverbs_rereg_mr_resp),
3877 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))),
3878
3879 DECLARE_UVERBS_OBJECT(
3880 UVERBS_OBJECT_MW,
3881 DECLARE_UVERBS_WRITE(
3882 IB_USER_VERBS_CMD_ALLOC_MW,
3883 ib_uverbs_alloc_mw,
3884 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw,
3885 struct ib_uverbs_alloc_mw_resp),
3886 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)),
3887 DECLARE_UVERBS_WRITE(
3888 IB_USER_VERBS_CMD_DEALLOC_MW,
3889 ib_uverbs_dealloc_mw,
3890 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw),
3891 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))),
3892
3893 DECLARE_UVERBS_OBJECT(
3894 UVERBS_OBJECT_PD,
3895 DECLARE_UVERBS_WRITE(
3896 IB_USER_VERBS_CMD_ALLOC_PD,
3897 ib_uverbs_alloc_pd,
3898 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd,
3899 struct ib_uverbs_alloc_pd_resp),
3900 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)),
3901 DECLARE_UVERBS_WRITE(
3902 IB_USER_VERBS_CMD_DEALLOC_PD,
3903 ib_uverbs_dealloc_pd,
3904 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd),
3905 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))),
3906
3907 DECLARE_UVERBS_OBJECT(
3908 UVERBS_OBJECT_QP,
3909 DECLARE_UVERBS_WRITE(
3910 IB_USER_VERBS_CMD_ATTACH_MCAST,
3911 ib_uverbs_attach_mcast,
3912 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast),
3913 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast),
3914 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3915 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP,
3916 ib_uverbs_create_qp,
3917 UAPI_DEF_WRITE_UDATA_IO(
3918 struct ib_uverbs_create_qp,
3919 struct ib_uverbs_create_qp_resp),
3920 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3921 DECLARE_UVERBS_WRITE(
3922 IB_USER_VERBS_CMD_DESTROY_QP,
3923 ib_uverbs_destroy_qp,
3924 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp,
3925 struct ib_uverbs_destroy_qp_resp),
3926 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)),
3927 DECLARE_UVERBS_WRITE(
3928 IB_USER_VERBS_CMD_DETACH_MCAST,
3929 ib_uverbs_detach_mcast,
3930 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast),
3931 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3932 DECLARE_UVERBS_WRITE(
3933 IB_USER_VERBS_CMD_MODIFY_QP,
3934 ib_uverbs_modify_qp,
3935 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp),
3936 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)),
3937 DECLARE_UVERBS_WRITE(
3938 IB_USER_VERBS_CMD_POST_RECV,
3939 ib_uverbs_post_recv,
3940 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv,
3941 struct ib_uverbs_post_recv_resp),
3942 UAPI_DEF_METHOD_NEEDS_FN(post_recv)),
3943 DECLARE_UVERBS_WRITE(
3944 IB_USER_VERBS_CMD_POST_SEND,
3945 ib_uverbs_post_send,
3946 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send,
3947 struct ib_uverbs_post_send_resp),
3948 UAPI_DEF_METHOD_NEEDS_FN(post_send)),
3949 DECLARE_UVERBS_WRITE(
3950 IB_USER_VERBS_CMD_QUERY_QP,
3951 ib_uverbs_query_qp,
3952 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp,
3953 struct ib_uverbs_query_qp_resp),
3954 UAPI_DEF_METHOD_NEEDS_FN(query_qp)),
3955 DECLARE_UVERBS_WRITE_EX(
3956 IB_USER_VERBS_EX_CMD_CREATE_QP,
3957 ib_uverbs_ex_create_qp,
3958 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp,
3959 comp_mask,
3960 struct ib_uverbs_ex_create_qp_resp,
3961 response_length),
3962 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3963 DECLARE_UVERBS_WRITE_EX(
3964 IB_USER_VERBS_EX_CMD_MODIFY_QP,
3965 ib_uverbs_ex_modify_qp,
3966 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp,
3967 base,
3968 struct ib_uverbs_ex_modify_qp_resp,
3969 response_length),
3970 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))),
3971
3972 DECLARE_UVERBS_OBJECT(
3973 UVERBS_OBJECT_RWQ_IND_TBL,
3974 DECLARE_UVERBS_WRITE_EX(
3975 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
3976 ib_uverbs_ex_create_rwq_ind_table,
3977 UAPI_DEF_WRITE_IO_EX(
3978 struct ib_uverbs_ex_create_rwq_ind_table,
3979 log_ind_tbl_size,
3980 struct ib_uverbs_ex_create_rwq_ind_table_resp,
3981 ind_tbl_num),
3982 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)),
3983 DECLARE_UVERBS_WRITE_EX(
3984 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL,
3985 ib_uverbs_ex_destroy_rwq_ind_table,
3986 UAPI_DEF_WRITE_I(
3987 struct ib_uverbs_ex_destroy_rwq_ind_table),
3988 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))),
3989
3990 DECLARE_UVERBS_OBJECT(
3991 UVERBS_OBJECT_WQ,
3992 DECLARE_UVERBS_WRITE_EX(
3993 IB_USER_VERBS_EX_CMD_CREATE_WQ,
3994 ib_uverbs_ex_create_wq,
3995 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq,
3996 max_sge,
3997 struct ib_uverbs_ex_create_wq_resp,
3998 wqn),
3999 UAPI_DEF_METHOD_NEEDS_FN(create_wq)),
4000 DECLARE_UVERBS_WRITE_EX(
4001 IB_USER_VERBS_EX_CMD_DESTROY_WQ,
4002 ib_uverbs_ex_destroy_wq,
4003 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq,
4004 wq_handle,
4005 struct ib_uverbs_ex_destroy_wq_resp,
4006 reserved),
4007 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)),
4008 DECLARE_UVERBS_WRITE_EX(
4009 IB_USER_VERBS_EX_CMD_MODIFY_WQ,
4010 ib_uverbs_ex_modify_wq,
4011 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq,
4012 curr_wq_state),
4013 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))),
4014
4015 DECLARE_UVERBS_OBJECT(
4016 UVERBS_OBJECT_SRQ,
4017 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ,
4018 ib_uverbs_create_srq,
4019 UAPI_DEF_WRITE_UDATA_IO(
4020 struct ib_uverbs_create_srq,
4021 struct ib_uverbs_create_srq_resp),
4022 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4023 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ,
4024 ib_uverbs_create_xsrq,
4025 UAPI_DEF_WRITE_UDATA_IO(
4026 struct ib_uverbs_create_xsrq,
4027 struct ib_uverbs_create_srq_resp),
4028 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4029 DECLARE_UVERBS_WRITE(
4030 IB_USER_VERBS_CMD_DESTROY_SRQ,
4031 ib_uverbs_destroy_srq,
4032 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq,
4033 struct ib_uverbs_destroy_srq_resp),
4034 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)),
4035 DECLARE_UVERBS_WRITE(
4036 IB_USER_VERBS_CMD_MODIFY_SRQ,
4037 ib_uverbs_modify_srq,
4038 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq),
4039 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)),
4040 DECLARE_UVERBS_WRITE(
4041 IB_USER_VERBS_CMD_POST_SRQ_RECV,
4042 ib_uverbs_post_srq_recv,
4043 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv,
4044 struct ib_uverbs_post_srq_recv_resp),
4045 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)),
4046 DECLARE_UVERBS_WRITE(
4047 IB_USER_VERBS_CMD_QUERY_SRQ,
4048 ib_uverbs_query_srq,
4049 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq,
4050 struct ib_uverbs_query_srq_resp),
4051 UAPI_DEF_METHOD_NEEDS_FN(query_srq))),
4052
4053 DECLARE_UVERBS_OBJECT(
4054 UVERBS_OBJECT_XRCD,
4055 DECLARE_UVERBS_WRITE(
4056 IB_USER_VERBS_CMD_CLOSE_XRCD,
4057 ib_uverbs_close_xrcd,
4058 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd)),
4059 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP,
4060 ib_uverbs_open_qp,
4061 UAPI_DEF_WRITE_UDATA_IO(
4062 struct ib_uverbs_open_qp,
4063 struct ib_uverbs_create_qp_resp)),
4064 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD,
4065 ib_uverbs_open_xrcd,
4066 UAPI_DEF_WRITE_UDATA_IO(
4067 struct ib_uverbs_open_xrcd,
4068 struct ib_uverbs_open_xrcd_resp)),
4069 UAPI_DEF_OBJ_NEEDS_FN(alloc_xrcd),
4070 UAPI_DEF_OBJ_NEEDS_FN(dealloc_xrcd)),
4071
4072 {},
4073};