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Merge branches 'intel_pstate-fix' and 'cpufreq-x86-fix'
[mirror_ubuntu-artful-kernel.git] / drivers / infiniband / core / uverbs_cmd.c
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 static struct ib_uverbs_completion_event_file *
51 ib_uverbs_lookup_comp_file(int fd, struct ib_ucontext *context)
52 {
53 struct ib_uobject *uobj = uobj_get_read(uobj_get_type(comp_channel),
54 fd, context);
55 struct ib_uobject_file *uobj_file;
56
57 if (IS_ERR(uobj))
58 return (void *)uobj;
59
60 uverbs_uobject_get(uobj);
61 uobj_put_read(uobj);
62
63 uobj_file = container_of(uobj, struct ib_uobject_file, uobj);
64 return container_of(uobj_file, struct ib_uverbs_completion_event_file,
65 uobj_file);
66 }
67
68 ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
69 struct ib_device *ib_dev,
70 const char __user *buf,
71 int in_len, int out_len)
72 {
73 struct ib_uverbs_get_context cmd;
74 struct ib_uverbs_get_context_resp resp;
75 struct ib_udata udata;
76 struct ib_ucontext *ucontext;
77 struct file *filp;
78 struct ib_rdmacg_object cg_obj;
79 int ret;
80
81 if (out_len < sizeof resp)
82 return -ENOSPC;
83
84 if (copy_from_user(&cmd, buf, sizeof cmd))
85 return -EFAULT;
86
87 mutex_lock(&file->mutex);
88
89 if (file->ucontext) {
90 ret = -EINVAL;
91 goto err;
92 }
93
94 INIT_UDATA(&udata, buf + sizeof cmd,
95 (unsigned long) cmd.response + sizeof resp,
96 in_len - sizeof cmd, out_len - sizeof resp);
97
98 ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
99 if (ret)
100 goto err;
101
102 ucontext = ib_dev->alloc_ucontext(ib_dev, &udata);
103 if (IS_ERR(ucontext)) {
104 ret = PTR_ERR(ucontext);
105 goto err_alloc;
106 }
107
108 ucontext->device = ib_dev;
109 ucontext->cg_obj = cg_obj;
110 /* ufile is required when some objects are released */
111 ucontext->ufile = file;
112 uverbs_initialize_ucontext(ucontext);
113
114 rcu_read_lock();
115 ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID);
116 rcu_read_unlock();
117 ucontext->closing = 0;
118
119 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
120 ucontext->umem_tree = RB_ROOT;
121 init_rwsem(&ucontext->umem_rwsem);
122 ucontext->odp_mrs_count = 0;
123 INIT_LIST_HEAD(&ucontext->no_private_counters);
124
125 if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING))
126 ucontext->invalidate_range = NULL;
127
128 #endif
129
130 resp.num_comp_vectors = file->device->num_comp_vectors;
131
132 ret = get_unused_fd_flags(O_CLOEXEC);
133 if (ret < 0)
134 goto err_free;
135 resp.async_fd = ret;
136
137 filp = ib_uverbs_alloc_async_event_file(file, ib_dev);
138 if (IS_ERR(filp)) {
139 ret = PTR_ERR(filp);
140 goto err_fd;
141 }
142
143 if (copy_to_user((void __user *) (unsigned long) cmd.response,
144 &resp, sizeof resp)) {
145 ret = -EFAULT;
146 goto err_file;
147 }
148
149 file->ucontext = ucontext;
150
151 fd_install(resp.async_fd, filp);
152
153 mutex_unlock(&file->mutex);
154
155 return in_len;
156
157 err_file:
158 ib_uverbs_free_async_event_file(file);
159 fput(filp);
160
161 err_fd:
162 put_unused_fd(resp.async_fd);
163
164 err_free:
165 put_pid(ucontext->tgid);
166 ib_dev->dealloc_ucontext(ucontext);
167
168 err_alloc:
169 ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
170
171 err:
172 mutex_unlock(&file->mutex);
173 return ret;
174 }
175
176 static void copy_query_dev_fields(struct ib_uverbs_file *file,
177 struct ib_device *ib_dev,
178 struct ib_uverbs_query_device_resp *resp,
179 struct ib_device_attr *attr)
180 {
181 resp->fw_ver = attr->fw_ver;
182 resp->node_guid = ib_dev->node_guid;
183 resp->sys_image_guid = attr->sys_image_guid;
184 resp->max_mr_size = attr->max_mr_size;
185 resp->page_size_cap = attr->page_size_cap;
186 resp->vendor_id = attr->vendor_id;
187 resp->vendor_part_id = attr->vendor_part_id;
188 resp->hw_ver = attr->hw_ver;
189 resp->max_qp = attr->max_qp;
190 resp->max_qp_wr = attr->max_qp_wr;
191 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags);
192 resp->max_sge = attr->max_sge;
193 resp->max_sge_rd = attr->max_sge_rd;
194 resp->max_cq = attr->max_cq;
195 resp->max_cqe = attr->max_cqe;
196 resp->max_mr = attr->max_mr;
197 resp->max_pd = attr->max_pd;
198 resp->max_qp_rd_atom = attr->max_qp_rd_atom;
199 resp->max_ee_rd_atom = attr->max_ee_rd_atom;
200 resp->max_res_rd_atom = attr->max_res_rd_atom;
201 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom;
202 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom;
203 resp->atomic_cap = attr->atomic_cap;
204 resp->max_ee = attr->max_ee;
205 resp->max_rdd = attr->max_rdd;
206 resp->max_mw = attr->max_mw;
207 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp;
208 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp;
209 resp->max_mcast_grp = attr->max_mcast_grp;
210 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
211 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
212 resp->max_ah = attr->max_ah;
213 resp->max_fmr = attr->max_fmr;
214 resp->max_map_per_fmr = attr->max_map_per_fmr;
215 resp->max_srq = attr->max_srq;
216 resp->max_srq_wr = attr->max_srq_wr;
217 resp->max_srq_sge = attr->max_srq_sge;
218 resp->max_pkeys = attr->max_pkeys;
219 resp->local_ca_ack_delay = attr->local_ca_ack_delay;
220 resp->phys_port_cnt = ib_dev->phys_port_cnt;
221 }
222
223 ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
224 struct ib_device *ib_dev,
225 const char __user *buf,
226 int in_len, int out_len)
227 {
228 struct ib_uverbs_query_device cmd;
229 struct ib_uverbs_query_device_resp resp;
230
231 if (out_len < sizeof resp)
232 return -ENOSPC;
233
234 if (copy_from_user(&cmd, buf, sizeof cmd))
235 return -EFAULT;
236
237 memset(&resp, 0, sizeof resp);
238 copy_query_dev_fields(file, ib_dev, &resp, &ib_dev->attrs);
239
240 if (copy_to_user((void __user *) (unsigned long) cmd.response,
241 &resp, sizeof resp))
242 return -EFAULT;
243
244 return in_len;
245 }
246
247 ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file,
248 struct ib_device *ib_dev,
249 const char __user *buf,
250 int in_len, int out_len)
251 {
252 struct ib_uverbs_query_port cmd;
253 struct ib_uverbs_query_port_resp resp;
254 struct ib_port_attr attr;
255 int ret;
256
257 if (out_len < sizeof resp)
258 return -ENOSPC;
259
260 if (copy_from_user(&cmd, buf, sizeof cmd))
261 return -EFAULT;
262
263 ret = ib_query_port(ib_dev, cmd.port_num, &attr);
264 if (ret)
265 return ret;
266
267 memset(&resp, 0, sizeof resp);
268
269 resp.state = attr.state;
270 resp.max_mtu = attr.max_mtu;
271 resp.active_mtu = attr.active_mtu;
272 resp.gid_tbl_len = attr.gid_tbl_len;
273 resp.port_cap_flags = attr.port_cap_flags;
274 resp.max_msg_sz = attr.max_msg_sz;
275 resp.bad_pkey_cntr = attr.bad_pkey_cntr;
276 resp.qkey_viol_cntr = attr.qkey_viol_cntr;
277 resp.pkey_tbl_len = attr.pkey_tbl_len;
278 resp.lid = attr.lid;
279 resp.sm_lid = attr.sm_lid;
280 resp.lmc = attr.lmc;
281 resp.max_vl_num = attr.max_vl_num;
282 resp.sm_sl = attr.sm_sl;
283 resp.subnet_timeout = attr.subnet_timeout;
284 resp.init_type_reply = attr.init_type_reply;
285 resp.active_width = attr.active_width;
286 resp.active_speed = attr.active_speed;
287 resp.phys_state = attr.phys_state;
288 resp.link_layer = rdma_port_get_link_layer(ib_dev,
289 cmd.port_num);
290
291 if (copy_to_user((void __user *) (unsigned long) cmd.response,
292 &resp, sizeof resp))
293 return -EFAULT;
294
295 return in_len;
296 }
297
298 ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
299 struct ib_device *ib_dev,
300 const char __user *buf,
301 int in_len, int out_len)
302 {
303 struct ib_uverbs_alloc_pd cmd;
304 struct ib_uverbs_alloc_pd_resp resp;
305 struct ib_udata udata;
306 struct ib_uobject *uobj;
307 struct ib_pd *pd;
308 int ret;
309
310 if (out_len < sizeof resp)
311 return -ENOSPC;
312
313 if (copy_from_user(&cmd, buf, sizeof cmd))
314 return -EFAULT;
315
316 INIT_UDATA(&udata, buf + sizeof cmd,
317 (unsigned long) cmd.response + sizeof resp,
318 in_len - sizeof cmd, out_len - sizeof resp);
319
320 uobj = uobj_alloc(uobj_get_type(pd), file->ucontext);
321 if (IS_ERR(uobj))
322 return PTR_ERR(uobj);
323
324 pd = ib_dev->alloc_pd(ib_dev, file->ucontext, &udata);
325 if (IS_ERR(pd)) {
326 ret = PTR_ERR(pd);
327 goto err;
328 }
329
330 pd->device = ib_dev;
331 pd->uobject = uobj;
332 pd->__internal_mr = NULL;
333 atomic_set(&pd->usecnt, 0);
334
335 uobj->object = pd;
336 memset(&resp, 0, sizeof resp);
337 resp.pd_handle = uobj->id;
338
339 if (copy_to_user((void __user *) (unsigned long) cmd.response,
340 &resp, sizeof resp)) {
341 ret = -EFAULT;
342 goto err_copy;
343 }
344
345 uobj_alloc_commit(uobj);
346
347 return in_len;
348
349 err_copy:
350 ib_dealloc_pd(pd);
351
352 err:
353 uobj_alloc_abort(uobj);
354 return ret;
355 }
356
357 ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
358 struct ib_device *ib_dev,
359 const char __user *buf,
360 int in_len, int out_len)
361 {
362 struct ib_uverbs_dealloc_pd cmd;
363 struct ib_uobject *uobj;
364 int ret;
365
366 if (copy_from_user(&cmd, buf, sizeof cmd))
367 return -EFAULT;
368
369 uobj = uobj_get_write(uobj_get_type(pd), cmd.pd_handle,
370 file->ucontext);
371 if (IS_ERR(uobj))
372 return PTR_ERR(uobj);
373
374 ret = uobj_remove_commit(uobj);
375
376 return ret ?: in_len;
377 }
378
379 struct xrcd_table_entry {
380 struct rb_node node;
381 struct ib_xrcd *xrcd;
382 struct inode *inode;
383 };
384
385 static int xrcd_table_insert(struct ib_uverbs_device *dev,
386 struct inode *inode,
387 struct ib_xrcd *xrcd)
388 {
389 struct xrcd_table_entry *entry, *scan;
390 struct rb_node **p = &dev->xrcd_tree.rb_node;
391 struct rb_node *parent = NULL;
392
393 entry = kmalloc(sizeof *entry, GFP_KERNEL);
394 if (!entry)
395 return -ENOMEM;
396
397 entry->xrcd = xrcd;
398 entry->inode = inode;
399
400 while (*p) {
401 parent = *p;
402 scan = rb_entry(parent, struct xrcd_table_entry, node);
403
404 if (inode < scan->inode) {
405 p = &(*p)->rb_left;
406 } else if (inode > scan->inode) {
407 p = &(*p)->rb_right;
408 } else {
409 kfree(entry);
410 return -EEXIST;
411 }
412 }
413
414 rb_link_node(&entry->node, parent, p);
415 rb_insert_color(&entry->node, &dev->xrcd_tree);
416 igrab(inode);
417 return 0;
418 }
419
420 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
421 struct inode *inode)
422 {
423 struct xrcd_table_entry *entry;
424 struct rb_node *p = dev->xrcd_tree.rb_node;
425
426 while (p) {
427 entry = rb_entry(p, struct xrcd_table_entry, node);
428
429 if (inode < entry->inode)
430 p = p->rb_left;
431 else if (inode > entry->inode)
432 p = p->rb_right;
433 else
434 return entry;
435 }
436
437 return NULL;
438 }
439
440 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
441 {
442 struct xrcd_table_entry *entry;
443
444 entry = xrcd_table_search(dev, inode);
445 if (!entry)
446 return NULL;
447
448 return entry->xrcd;
449 }
450
451 static void xrcd_table_delete(struct ib_uverbs_device *dev,
452 struct inode *inode)
453 {
454 struct xrcd_table_entry *entry;
455
456 entry = xrcd_table_search(dev, inode);
457 if (entry) {
458 iput(inode);
459 rb_erase(&entry->node, &dev->xrcd_tree);
460 kfree(entry);
461 }
462 }
463
464 ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file,
465 struct ib_device *ib_dev,
466 const char __user *buf, int in_len,
467 int out_len)
468 {
469 struct ib_uverbs_open_xrcd cmd;
470 struct ib_uverbs_open_xrcd_resp resp;
471 struct ib_udata udata;
472 struct ib_uxrcd_object *obj;
473 struct ib_xrcd *xrcd = NULL;
474 struct fd f = {NULL, 0};
475 struct inode *inode = NULL;
476 int ret = 0;
477 int new_xrcd = 0;
478
479 if (out_len < sizeof resp)
480 return -ENOSPC;
481
482 if (copy_from_user(&cmd, buf, sizeof cmd))
483 return -EFAULT;
484
485 INIT_UDATA(&udata, buf + sizeof cmd,
486 (unsigned long) cmd.response + sizeof resp,
487 in_len - sizeof cmd, out_len - sizeof resp);
488
489 mutex_lock(&file->device->xrcd_tree_mutex);
490
491 if (cmd.fd != -1) {
492 /* search for file descriptor */
493 f = fdget(cmd.fd);
494 if (!f.file) {
495 ret = -EBADF;
496 goto err_tree_mutex_unlock;
497 }
498
499 inode = file_inode(f.file);
500 xrcd = find_xrcd(file->device, inode);
501 if (!xrcd && !(cmd.oflags & O_CREAT)) {
502 /* no file descriptor. Need CREATE flag */
503 ret = -EAGAIN;
504 goto err_tree_mutex_unlock;
505 }
506
507 if (xrcd && cmd.oflags & O_EXCL) {
508 ret = -EINVAL;
509 goto err_tree_mutex_unlock;
510 }
511 }
512
513 obj = (struct ib_uxrcd_object *)uobj_alloc(uobj_get_type(xrcd),
514 file->ucontext);
515 if (IS_ERR(obj)) {
516 ret = PTR_ERR(obj);
517 goto err_tree_mutex_unlock;
518 }
519
520 if (!xrcd) {
521 xrcd = ib_dev->alloc_xrcd(ib_dev, file->ucontext, &udata);
522 if (IS_ERR(xrcd)) {
523 ret = PTR_ERR(xrcd);
524 goto err;
525 }
526
527 xrcd->inode = inode;
528 xrcd->device = ib_dev;
529 atomic_set(&xrcd->usecnt, 0);
530 mutex_init(&xrcd->tgt_qp_mutex);
531 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
532 new_xrcd = 1;
533 }
534
535 atomic_set(&obj->refcnt, 0);
536 obj->uobject.object = xrcd;
537 memset(&resp, 0, sizeof resp);
538 resp.xrcd_handle = obj->uobject.id;
539
540 if (inode) {
541 if (new_xrcd) {
542 /* create new inode/xrcd table entry */
543 ret = xrcd_table_insert(file->device, inode, xrcd);
544 if (ret)
545 goto err_dealloc_xrcd;
546 }
547 atomic_inc(&xrcd->usecnt);
548 }
549
550 if (copy_to_user((void __user *) (unsigned long) cmd.response,
551 &resp, sizeof resp)) {
552 ret = -EFAULT;
553 goto err_copy;
554 }
555
556 if (f.file)
557 fdput(f);
558
559 uobj_alloc_commit(&obj->uobject);
560
561 mutex_unlock(&file->device->xrcd_tree_mutex);
562 return in_len;
563
564 err_copy:
565 if (inode) {
566 if (new_xrcd)
567 xrcd_table_delete(file->device, inode);
568 atomic_dec(&xrcd->usecnt);
569 }
570
571 err_dealloc_xrcd:
572 ib_dealloc_xrcd(xrcd);
573
574 err:
575 uobj_alloc_abort(&obj->uobject);
576
577 err_tree_mutex_unlock:
578 if (f.file)
579 fdput(f);
580
581 mutex_unlock(&file->device->xrcd_tree_mutex);
582
583 return ret;
584 }
585
586 ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file,
587 struct ib_device *ib_dev,
588 const char __user *buf, int in_len,
589 int out_len)
590 {
591 struct ib_uverbs_close_xrcd cmd;
592 struct ib_uobject *uobj;
593 int ret = 0;
594
595 if (copy_from_user(&cmd, buf, sizeof cmd))
596 return -EFAULT;
597
598 uobj = uobj_get_write(uobj_get_type(xrcd), cmd.xrcd_handle,
599 file->ucontext);
600 if (IS_ERR(uobj)) {
601 mutex_unlock(&file->device->xrcd_tree_mutex);
602 return PTR_ERR(uobj);
603 }
604
605 ret = uobj_remove_commit(uobj);
606 return ret ?: in_len;
607 }
608
609 int ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev,
610 struct ib_xrcd *xrcd,
611 enum rdma_remove_reason why)
612 {
613 struct inode *inode;
614 int ret;
615
616 inode = xrcd->inode;
617 if (inode && !atomic_dec_and_test(&xrcd->usecnt))
618 return 0;
619
620 ret = ib_dealloc_xrcd(xrcd);
621
622 if (why == RDMA_REMOVE_DESTROY && ret)
623 atomic_inc(&xrcd->usecnt);
624 else if (inode)
625 xrcd_table_delete(dev, inode);
626
627 return ret;
628 }
629
630 ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
631 struct ib_device *ib_dev,
632 const char __user *buf, int in_len,
633 int out_len)
634 {
635 struct ib_uverbs_reg_mr cmd;
636 struct ib_uverbs_reg_mr_resp resp;
637 struct ib_udata udata;
638 struct ib_uobject *uobj;
639 struct ib_pd *pd;
640 struct ib_mr *mr;
641 int ret;
642
643 if (out_len < sizeof resp)
644 return -ENOSPC;
645
646 if (copy_from_user(&cmd, buf, sizeof cmd))
647 return -EFAULT;
648
649 INIT_UDATA(&udata, buf + sizeof cmd,
650 (unsigned long) cmd.response + sizeof resp,
651 in_len - sizeof cmd, out_len - sizeof resp);
652
653 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
654 return -EINVAL;
655
656 ret = ib_check_mr_access(cmd.access_flags);
657 if (ret)
658 return ret;
659
660 uobj = uobj_alloc(uobj_get_type(mr), file->ucontext);
661 if (IS_ERR(uobj))
662 return PTR_ERR(uobj);
663
664 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext);
665 if (!pd) {
666 ret = -EINVAL;
667 goto err_free;
668 }
669
670 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) {
671 if (!(pd->device->attrs.device_cap_flags &
672 IB_DEVICE_ON_DEMAND_PAGING)) {
673 pr_debug("ODP support not available\n");
674 ret = -EINVAL;
675 goto err_put;
676 }
677 }
678
679 mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
680 cmd.access_flags, &udata);
681 if (IS_ERR(mr)) {
682 ret = PTR_ERR(mr);
683 goto err_put;
684 }
685
686 mr->device = pd->device;
687 mr->pd = pd;
688 mr->uobject = uobj;
689 atomic_inc(&pd->usecnt);
690
691 uobj->object = mr;
692
693 memset(&resp, 0, sizeof resp);
694 resp.lkey = mr->lkey;
695 resp.rkey = mr->rkey;
696 resp.mr_handle = uobj->id;
697
698 if (copy_to_user((void __user *) (unsigned long) cmd.response,
699 &resp, sizeof resp)) {
700 ret = -EFAULT;
701 goto err_copy;
702 }
703
704 uobj_put_obj_read(pd);
705
706 uobj_alloc_commit(uobj);
707
708 return in_len;
709
710 err_copy:
711 ib_dereg_mr(mr);
712
713 err_put:
714 uobj_put_obj_read(pd);
715
716 err_free:
717 uobj_alloc_abort(uobj);
718 return ret;
719 }
720
721 ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file,
722 struct ib_device *ib_dev,
723 const char __user *buf, int in_len,
724 int out_len)
725 {
726 struct ib_uverbs_rereg_mr cmd;
727 struct ib_uverbs_rereg_mr_resp resp;
728 struct ib_udata udata;
729 struct ib_pd *pd = NULL;
730 struct ib_mr *mr;
731 struct ib_pd *old_pd;
732 int ret;
733 struct ib_uobject *uobj;
734
735 if (out_len < sizeof(resp))
736 return -ENOSPC;
737
738 if (copy_from_user(&cmd, buf, sizeof(cmd)))
739 return -EFAULT;
740
741 INIT_UDATA(&udata, buf + sizeof(cmd),
742 (unsigned long) cmd.response + sizeof(resp),
743 in_len - sizeof(cmd), out_len - sizeof(resp));
744
745 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags)
746 return -EINVAL;
747
748 if ((cmd.flags & IB_MR_REREG_TRANS) &&
749 (!cmd.start || !cmd.hca_va || 0 >= cmd.length ||
750 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)))
751 return -EINVAL;
752
753 uobj = uobj_get_write(uobj_get_type(mr), cmd.mr_handle,
754 file->ucontext);
755 if (IS_ERR(uobj))
756 return PTR_ERR(uobj);
757
758 mr = uobj->object;
759
760 if (cmd.flags & IB_MR_REREG_ACCESS) {
761 ret = ib_check_mr_access(cmd.access_flags);
762 if (ret)
763 goto put_uobjs;
764 }
765
766 if (cmd.flags & IB_MR_REREG_PD) {
767 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext);
768 if (!pd) {
769 ret = -EINVAL;
770 goto put_uobjs;
771 }
772 }
773
774 old_pd = mr->pd;
775 ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start,
776 cmd.length, cmd.hca_va,
777 cmd.access_flags, pd, &udata);
778 if (!ret) {
779 if (cmd.flags & IB_MR_REREG_PD) {
780 atomic_inc(&pd->usecnt);
781 mr->pd = pd;
782 atomic_dec(&old_pd->usecnt);
783 }
784 } else {
785 goto put_uobj_pd;
786 }
787
788 memset(&resp, 0, sizeof(resp));
789 resp.lkey = mr->lkey;
790 resp.rkey = mr->rkey;
791
792 if (copy_to_user((void __user *)(unsigned long)cmd.response,
793 &resp, sizeof(resp)))
794 ret = -EFAULT;
795 else
796 ret = in_len;
797
798 put_uobj_pd:
799 if (cmd.flags & IB_MR_REREG_PD)
800 uobj_put_obj_read(pd);
801
802 put_uobjs:
803 uobj_put_write(uobj);
804
805 return ret;
806 }
807
808 ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
809 struct ib_device *ib_dev,
810 const char __user *buf, int in_len,
811 int out_len)
812 {
813 struct ib_uverbs_dereg_mr cmd;
814 struct ib_uobject *uobj;
815 int ret = -EINVAL;
816
817 if (copy_from_user(&cmd, buf, sizeof cmd))
818 return -EFAULT;
819
820 uobj = uobj_get_write(uobj_get_type(mr), cmd.mr_handle,
821 file->ucontext);
822 if (IS_ERR(uobj))
823 return PTR_ERR(uobj);
824
825 ret = uobj_remove_commit(uobj);
826
827 return ret ?: in_len;
828 }
829
830 ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file,
831 struct ib_device *ib_dev,
832 const char __user *buf, int in_len,
833 int out_len)
834 {
835 struct ib_uverbs_alloc_mw cmd;
836 struct ib_uverbs_alloc_mw_resp resp;
837 struct ib_uobject *uobj;
838 struct ib_pd *pd;
839 struct ib_mw *mw;
840 struct ib_udata udata;
841 int ret;
842
843 if (out_len < sizeof(resp))
844 return -ENOSPC;
845
846 if (copy_from_user(&cmd, buf, sizeof(cmd)))
847 return -EFAULT;
848
849 uobj = uobj_alloc(uobj_get_type(mw), file->ucontext);
850 if (IS_ERR(uobj))
851 return PTR_ERR(uobj);
852
853 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext);
854 if (!pd) {
855 ret = -EINVAL;
856 goto err_free;
857 }
858
859 INIT_UDATA(&udata, buf + sizeof(cmd),
860 (unsigned long)cmd.response + sizeof(resp),
861 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
862 out_len - sizeof(resp));
863
864 mw = pd->device->alloc_mw(pd, cmd.mw_type, &udata);
865 if (IS_ERR(mw)) {
866 ret = PTR_ERR(mw);
867 goto err_put;
868 }
869
870 mw->device = pd->device;
871 mw->pd = pd;
872 mw->uobject = uobj;
873 atomic_inc(&pd->usecnt);
874
875 uobj->object = mw;
876
877 memset(&resp, 0, sizeof(resp));
878 resp.rkey = mw->rkey;
879 resp.mw_handle = uobj->id;
880
881 if (copy_to_user((void __user *)(unsigned long)cmd.response,
882 &resp, sizeof(resp))) {
883 ret = -EFAULT;
884 goto err_copy;
885 }
886
887 uobj_put_obj_read(pd);
888 uobj_alloc_commit(uobj);
889
890 return in_len;
891
892 err_copy:
893 uverbs_dealloc_mw(mw);
894 err_put:
895 uobj_put_obj_read(pd);
896 err_free:
897 uobj_alloc_abort(uobj);
898 return ret;
899 }
900
901 ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file,
902 struct ib_device *ib_dev,
903 const char __user *buf, int in_len,
904 int out_len)
905 {
906 struct ib_uverbs_dealloc_mw cmd;
907 struct ib_uobject *uobj;
908 int ret = -EINVAL;
909
910 if (copy_from_user(&cmd, buf, sizeof(cmd)))
911 return -EFAULT;
912
913 uobj = uobj_get_write(uobj_get_type(mw), cmd.mw_handle,
914 file->ucontext);
915 if (IS_ERR(uobj))
916 return PTR_ERR(uobj);
917
918 ret = uobj_remove_commit(uobj);
919 return ret ?: in_len;
920 }
921
922 ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
923 struct ib_device *ib_dev,
924 const char __user *buf, int in_len,
925 int out_len)
926 {
927 struct ib_uverbs_create_comp_channel cmd;
928 struct ib_uverbs_create_comp_channel_resp resp;
929 struct ib_uobject *uobj;
930 struct ib_uverbs_completion_event_file *ev_file;
931
932 if (out_len < sizeof resp)
933 return -ENOSPC;
934
935 if (copy_from_user(&cmd, buf, sizeof cmd))
936 return -EFAULT;
937
938 uobj = uobj_alloc(uobj_get_type(comp_channel), file->ucontext);
939 if (IS_ERR(uobj))
940 return PTR_ERR(uobj);
941
942 resp.fd = uobj->id;
943
944 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file,
945 uobj_file.uobj);
946 ib_uverbs_init_event_queue(&ev_file->ev_queue);
947
948 if (copy_to_user((void __user *) (unsigned long) cmd.response,
949 &resp, sizeof resp)) {
950 uobj_alloc_abort(uobj);
951 return -EFAULT;
952 }
953
954 uobj_alloc_commit(uobj);
955 return in_len;
956 }
957
958 static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file,
959 struct ib_device *ib_dev,
960 struct ib_udata *ucore,
961 struct ib_udata *uhw,
962 struct ib_uverbs_ex_create_cq *cmd,
963 size_t cmd_sz,
964 int (*cb)(struct ib_uverbs_file *file,
965 struct ib_ucq_object *obj,
966 struct ib_uverbs_ex_create_cq_resp *resp,
967 struct ib_udata *udata,
968 void *context),
969 void *context)
970 {
971 struct ib_ucq_object *obj;
972 struct ib_uverbs_completion_event_file *ev_file = NULL;
973 struct ib_cq *cq;
974 int ret;
975 struct ib_uverbs_ex_create_cq_resp resp;
976 struct ib_cq_init_attr attr = {};
977
978 if (cmd->comp_vector >= file->device->num_comp_vectors)
979 return ERR_PTR(-EINVAL);
980
981 obj = (struct ib_ucq_object *)uobj_alloc(uobj_get_type(cq),
982 file->ucontext);
983 if (IS_ERR(obj))
984 return obj;
985
986 if (cmd->comp_channel >= 0) {
987 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel,
988 file->ucontext);
989 if (IS_ERR(ev_file)) {
990 ret = PTR_ERR(ev_file);
991 goto err;
992 }
993 }
994
995 obj->uobject.user_handle = cmd->user_handle;
996 obj->uverbs_file = file;
997 obj->comp_events_reported = 0;
998 obj->async_events_reported = 0;
999 INIT_LIST_HEAD(&obj->comp_list);
1000 INIT_LIST_HEAD(&obj->async_list);
1001
1002 attr.cqe = cmd->cqe;
1003 attr.comp_vector = cmd->comp_vector;
1004
1005 if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags))
1006 attr.flags = cmd->flags;
1007
1008 cq = ib_dev->create_cq(ib_dev, &attr, file->ucontext, uhw);
1009 if (IS_ERR(cq)) {
1010 ret = PTR_ERR(cq);
1011 goto err_file;
1012 }
1013
1014 cq->device = ib_dev;
1015 cq->uobject = &obj->uobject;
1016 cq->comp_handler = ib_uverbs_comp_handler;
1017 cq->event_handler = ib_uverbs_cq_event_handler;
1018 cq->cq_context = &ev_file->ev_queue;
1019 atomic_set(&cq->usecnt, 0);
1020
1021 obj->uobject.object = cq;
1022 memset(&resp, 0, sizeof resp);
1023 resp.base.cq_handle = obj->uobject.id;
1024 resp.base.cqe = cq->cqe;
1025
1026 resp.response_length = offsetof(typeof(resp), response_length) +
1027 sizeof(resp.response_length);
1028
1029 ret = cb(file, obj, &resp, ucore, context);
1030 if (ret)
1031 goto err_cb;
1032
1033 uobj_alloc_commit(&obj->uobject);
1034
1035 return obj;
1036
1037 err_cb:
1038 ib_destroy_cq(cq);
1039
1040 err_file:
1041 if (ev_file)
1042 ib_uverbs_release_ucq(file, ev_file, obj);
1043
1044 err:
1045 uobj_alloc_abort(&obj->uobject);
1046
1047 return ERR_PTR(ret);
1048 }
1049
1050 static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file,
1051 struct ib_ucq_object *obj,
1052 struct ib_uverbs_ex_create_cq_resp *resp,
1053 struct ib_udata *ucore, void *context)
1054 {
1055 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1056 return -EFAULT;
1057
1058 return 0;
1059 }
1060
1061 ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
1062 struct ib_device *ib_dev,
1063 const char __user *buf, int in_len,
1064 int out_len)
1065 {
1066 struct ib_uverbs_create_cq cmd;
1067 struct ib_uverbs_ex_create_cq cmd_ex;
1068 struct ib_uverbs_create_cq_resp resp;
1069 struct ib_udata ucore;
1070 struct ib_udata uhw;
1071 struct ib_ucq_object *obj;
1072
1073 if (out_len < sizeof(resp))
1074 return -ENOSPC;
1075
1076 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1077 return -EFAULT;
1078
1079 INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd), sizeof(resp));
1080
1081 INIT_UDATA(&uhw, buf + sizeof(cmd),
1082 (unsigned long)cmd.response + sizeof(resp),
1083 in_len - sizeof(cmd), out_len - sizeof(resp));
1084
1085 memset(&cmd_ex, 0, sizeof(cmd_ex));
1086 cmd_ex.user_handle = cmd.user_handle;
1087 cmd_ex.cqe = cmd.cqe;
1088 cmd_ex.comp_vector = cmd.comp_vector;
1089 cmd_ex.comp_channel = cmd.comp_channel;
1090
1091 obj = create_cq(file, ib_dev, &ucore, &uhw, &cmd_ex,
1092 offsetof(typeof(cmd_ex), comp_channel) +
1093 sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb,
1094 NULL);
1095
1096 if (IS_ERR(obj))
1097 return PTR_ERR(obj);
1098
1099 return in_len;
1100 }
1101
1102 static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file,
1103 struct ib_ucq_object *obj,
1104 struct ib_uverbs_ex_create_cq_resp *resp,
1105 struct ib_udata *ucore, void *context)
1106 {
1107 if (ib_copy_to_udata(ucore, resp, resp->response_length))
1108 return -EFAULT;
1109
1110 return 0;
1111 }
1112
1113 int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file,
1114 struct ib_device *ib_dev,
1115 struct ib_udata *ucore,
1116 struct ib_udata *uhw)
1117 {
1118 struct ib_uverbs_ex_create_cq_resp resp;
1119 struct ib_uverbs_ex_create_cq cmd;
1120 struct ib_ucq_object *obj;
1121 int err;
1122
1123 if (ucore->inlen < sizeof(cmd))
1124 return -EINVAL;
1125
1126 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
1127 if (err)
1128 return err;
1129
1130 if (cmd.comp_mask)
1131 return -EINVAL;
1132
1133 if (cmd.reserved)
1134 return -EINVAL;
1135
1136 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
1137 sizeof(resp.response_length)))
1138 return -ENOSPC;
1139
1140 obj = create_cq(file, ib_dev, ucore, uhw, &cmd,
1141 min(ucore->inlen, sizeof(cmd)),
1142 ib_uverbs_ex_create_cq_cb, NULL);
1143
1144 if (IS_ERR(obj))
1145 return PTR_ERR(obj);
1146
1147 return 0;
1148 }
1149
1150 ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
1151 struct ib_device *ib_dev,
1152 const char __user *buf, int in_len,
1153 int out_len)
1154 {
1155 struct ib_uverbs_resize_cq cmd;
1156 struct ib_uverbs_resize_cq_resp resp = {};
1157 struct ib_udata udata;
1158 struct ib_cq *cq;
1159 int ret = -EINVAL;
1160
1161 if (copy_from_user(&cmd, buf, sizeof cmd))
1162 return -EFAULT;
1163
1164 INIT_UDATA(&udata, buf + sizeof cmd,
1165 (unsigned long) cmd.response + sizeof resp,
1166 in_len - sizeof cmd, out_len - sizeof resp);
1167
1168 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext);
1169 if (!cq)
1170 return -EINVAL;
1171
1172 ret = cq->device->resize_cq(cq, cmd.cqe, &udata);
1173 if (ret)
1174 goto out;
1175
1176 resp.cqe = cq->cqe;
1177
1178 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1179 &resp, sizeof resp.cqe))
1180 ret = -EFAULT;
1181
1182 out:
1183 uobj_put_obj_read(cq);
1184
1185 return ret ? ret : in_len;
1186 }
1187
1188 static int copy_wc_to_user(void __user *dest, struct ib_wc *wc)
1189 {
1190 struct ib_uverbs_wc tmp;
1191
1192 tmp.wr_id = wc->wr_id;
1193 tmp.status = wc->status;
1194 tmp.opcode = wc->opcode;
1195 tmp.vendor_err = wc->vendor_err;
1196 tmp.byte_len = wc->byte_len;
1197 tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data;
1198 tmp.qp_num = wc->qp->qp_num;
1199 tmp.src_qp = wc->src_qp;
1200 tmp.wc_flags = wc->wc_flags;
1201 tmp.pkey_index = wc->pkey_index;
1202 tmp.slid = wc->slid;
1203 tmp.sl = wc->sl;
1204 tmp.dlid_path_bits = wc->dlid_path_bits;
1205 tmp.port_num = wc->port_num;
1206 tmp.reserved = 0;
1207
1208 if (copy_to_user(dest, &tmp, sizeof tmp))
1209 return -EFAULT;
1210
1211 return 0;
1212 }
1213
1214 ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
1215 struct ib_device *ib_dev,
1216 const char __user *buf, int in_len,
1217 int out_len)
1218 {
1219 struct ib_uverbs_poll_cq cmd;
1220 struct ib_uverbs_poll_cq_resp resp;
1221 u8 __user *header_ptr;
1222 u8 __user *data_ptr;
1223 struct ib_cq *cq;
1224 struct ib_wc wc;
1225 int ret;
1226
1227 if (copy_from_user(&cmd, buf, sizeof cmd))
1228 return -EFAULT;
1229
1230 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext);
1231 if (!cq)
1232 return -EINVAL;
1233
1234 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1235 header_ptr = (void __user *)(unsigned long) cmd.response;
1236 data_ptr = header_ptr + sizeof resp;
1237
1238 memset(&resp, 0, sizeof resp);
1239 while (resp.count < cmd.ne) {
1240 ret = ib_poll_cq(cq, 1, &wc);
1241 if (ret < 0)
1242 goto out_put;
1243 if (!ret)
1244 break;
1245
1246 ret = copy_wc_to_user(data_ptr, &wc);
1247 if (ret)
1248 goto out_put;
1249
1250 data_ptr += sizeof(struct ib_uverbs_wc);
1251 ++resp.count;
1252 }
1253
1254 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1255 ret = -EFAULT;
1256 goto out_put;
1257 }
1258
1259 ret = in_len;
1260
1261 out_put:
1262 uobj_put_obj_read(cq);
1263 return ret;
1264 }
1265
1266 ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
1267 struct ib_device *ib_dev,
1268 const char __user *buf, int in_len,
1269 int out_len)
1270 {
1271 struct ib_uverbs_req_notify_cq cmd;
1272 struct ib_cq *cq;
1273
1274 if (copy_from_user(&cmd, buf, sizeof cmd))
1275 return -EFAULT;
1276
1277 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext);
1278 if (!cq)
1279 return -EINVAL;
1280
1281 ib_req_notify_cq(cq, cmd.solicited_only ?
1282 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1283
1284 uobj_put_obj_read(cq);
1285
1286 return in_len;
1287 }
1288
1289 ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
1290 struct ib_device *ib_dev,
1291 const char __user *buf, int in_len,
1292 int out_len)
1293 {
1294 struct ib_uverbs_destroy_cq cmd;
1295 struct ib_uverbs_destroy_cq_resp resp;
1296 struct ib_uobject *uobj;
1297 struct ib_cq *cq;
1298 struct ib_ucq_object *obj;
1299 int ret = -EINVAL;
1300
1301 if (copy_from_user(&cmd, buf, sizeof cmd))
1302 return -EFAULT;
1303
1304 uobj = uobj_get_write(uobj_get_type(cq), cmd.cq_handle,
1305 file->ucontext);
1306 if (IS_ERR(uobj))
1307 return PTR_ERR(uobj);
1308
1309 /*
1310 * Make sure we don't free the memory in remove_commit as we still
1311 * needs the uobject memory to create the response.
1312 */
1313 uverbs_uobject_get(uobj);
1314 cq = uobj->object;
1315 obj = container_of(cq->uobject, struct ib_ucq_object, uobject);
1316
1317 memset(&resp, 0, sizeof(resp));
1318
1319 ret = uobj_remove_commit(uobj);
1320 if (ret) {
1321 uverbs_uobject_put(uobj);
1322 return ret;
1323 }
1324
1325 resp.comp_events_reported = obj->comp_events_reported;
1326 resp.async_events_reported = obj->async_events_reported;
1327
1328 uverbs_uobject_put(uobj);
1329 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1330 &resp, sizeof resp))
1331 return -EFAULT;
1332
1333 return in_len;
1334 }
1335
1336 static int create_qp(struct ib_uverbs_file *file,
1337 struct ib_udata *ucore,
1338 struct ib_udata *uhw,
1339 struct ib_uverbs_ex_create_qp *cmd,
1340 size_t cmd_sz,
1341 int (*cb)(struct ib_uverbs_file *file,
1342 struct ib_uverbs_ex_create_qp_resp *resp,
1343 struct ib_udata *udata),
1344 void *context)
1345 {
1346 struct ib_uqp_object *obj;
1347 struct ib_device *device;
1348 struct ib_pd *pd = NULL;
1349 struct ib_xrcd *xrcd = NULL;
1350 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT);
1351 struct ib_cq *scq = NULL, *rcq = NULL;
1352 struct ib_srq *srq = NULL;
1353 struct ib_qp *qp;
1354 char *buf;
1355 struct ib_qp_init_attr attr = {};
1356 struct ib_uverbs_ex_create_qp_resp resp;
1357 int ret;
1358 struct ib_rwq_ind_table *ind_tbl = NULL;
1359 bool has_sq = true;
1360
1361 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
1362 return -EPERM;
1363
1364 obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp),
1365 file->ucontext);
1366 if (IS_ERR(obj))
1367 return PTR_ERR(obj);
1368 obj->uxrcd = NULL;
1369 obj->uevent.uobject.user_handle = cmd->user_handle;
1370 mutex_init(&obj->mcast_lock);
1371
1372 if (cmd_sz >= offsetof(typeof(*cmd), rwq_ind_tbl_handle) +
1373 sizeof(cmd->rwq_ind_tbl_handle) &&
1374 (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE)) {
1375 ind_tbl = uobj_get_obj_read(rwq_ind_table,
1376 cmd->rwq_ind_tbl_handle,
1377 file->ucontext);
1378 if (!ind_tbl) {
1379 ret = -EINVAL;
1380 goto err_put;
1381 }
1382
1383 attr.rwq_ind_tbl = ind_tbl;
1384 }
1385
1386 if ((cmd_sz >= offsetof(typeof(*cmd), reserved1) +
1387 sizeof(cmd->reserved1)) && cmd->reserved1) {
1388 ret = -EOPNOTSUPP;
1389 goto err_put;
1390 }
1391
1392 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1393 ret = -EINVAL;
1394 goto err_put;
1395 }
1396
1397 if (ind_tbl && !cmd->max_send_wr)
1398 has_sq = false;
1399
1400 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1401 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->pd_handle,
1402 file->ucontext);
1403
1404 if (IS_ERR(xrcd_uobj)) {
1405 ret = -EINVAL;
1406 goto err_put;
1407 }
1408
1409 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1410 if (!xrcd) {
1411 ret = -EINVAL;
1412 goto err_put;
1413 }
1414 device = xrcd->device;
1415 } else {
1416 if (cmd->qp_type == IB_QPT_XRC_INI) {
1417 cmd->max_recv_wr = 0;
1418 cmd->max_recv_sge = 0;
1419 } else {
1420 if (cmd->is_srq) {
1421 srq = uobj_get_obj_read(srq, cmd->srq_handle,
1422 file->ucontext);
1423 if (!srq || srq->srq_type != IB_SRQT_BASIC) {
1424 ret = -EINVAL;
1425 goto err_put;
1426 }
1427 }
1428
1429 if (!ind_tbl) {
1430 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1431 rcq = uobj_get_obj_read(cq, cmd->recv_cq_handle,
1432 file->ucontext);
1433 if (!rcq) {
1434 ret = -EINVAL;
1435 goto err_put;
1436 }
1437 }
1438 }
1439 }
1440
1441 if (has_sq)
1442 scq = uobj_get_obj_read(cq, cmd->send_cq_handle,
1443 file->ucontext);
1444 if (!ind_tbl)
1445 rcq = rcq ?: scq;
1446 pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext);
1447 if (!pd || (!scq && has_sq)) {
1448 ret = -EINVAL;
1449 goto err_put;
1450 }
1451
1452 device = pd->device;
1453 }
1454
1455 attr.event_handler = ib_uverbs_qp_event_handler;
1456 attr.qp_context = file;
1457 attr.send_cq = scq;
1458 attr.recv_cq = rcq;
1459 attr.srq = srq;
1460 attr.xrcd = xrcd;
1461 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1462 IB_SIGNAL_REQ_WR;
1463 attr.qp_type = cmd->qp_type;
1464 attr.create_flags = 0;
1465
1466 attr.cap.max_send_wr = cmd->max_send_wr;
1467 attr.cap.max_recv_wr = cmd->max_recv_wr;
1468 attr.cap.max_send_sge = cmd->max_send_sge;
1469 attr.cap.max_recv_sge = cmd->max_recv_sge;
1470 attr.cap.max_inline_data = cmd->max_inline_data;
1471
1472 obj->uevent.events_reported = 0;
1473 INIT_LIST_HEAD(&obj->uevent.event_list);
1474 INIT_LIST_HEAD(&obj->mcast_list);
1475
1476 if (cmd_sz >= offsetof(typeof(*cmd), create_flags) +
1477 sizeof(cmd->create_flags))
1478 attr.create_flags = cmd->create_flags;
1479
1480 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1481 IB_QP_CREATE_CROSS_CHANNEL |
1482 IB_QP_CREATE_MANAGED_SEND |
1483 IB_QP_CREATE_MANAGED_RECV |
1484 IB_QP_CREATE_SCATTER_FCS |
1485 IB_QP_CREATE_CVLAN_STRIPPING)) {
1486 ret = -EINVAL;
1487 goto err_put;
1488 }
1489
1490 buf = (void *)cmd + sizeof(*cmd);
1491 if (cmd_sz > sizeof(*cmd))
1492 if (!(buf[0] == 0 && !memcmp(buf, buf + 1,
1493 cmd_sz - sizeof(*cmd) - 1))) {
1494 ret = -EINVAL;
1495 goto err_put;
1496 }
1497
1498 if (cmd->qp_type == IB_QPT_XRC_TGT)
1499 qp = ib_create_qp(pd, &attr);
1500 else
1501 qp = device->create_qp(pd, &attr, uhw);
1502
1503 if (IS_ERR(qp)) {
1504 ret = PTR_ERR(qp);
1505 goto err_put;
1506 }
1507
1508 if (cmd->qp_type != IB_QPT_XRC_TGT) {
1509 ret = ib_create_qp_security(qp, device);
1510 if (ret)
1511 goto err_cb;
1512
1513 qp->real_qp = qp;
1514 qp->device = device;
1515 qp->pd = pd;
1516 qp->send_cq = attr.send_cq;
1517 qp->recv_cq = attr.recv_cq;
1518 qp->srq = attr.srq;
1519 qp->rwq_ind_tbl = ind_tbl;
1520 qp->event_handler = attr.event_handler;
1521 qp->qp_context = attr.qp_context;
1522 qp->qp_type = attr.qp_type;
1523 atomic_set(&qp->usecnt, 0);
1524 atomic_inc(&pd->usecnt);
1525 if (attr.send_cq)
1526 atomic_inc(&attr.send_cq->usecnt);
1527 if (attr.recv_cq)
1528 atomic_inc(&attr.recv_cq->usecnt);
1529 if (attr.srq)
1530 atomic_inc(&attr.srq->usecnt);
1531 if (ind_tbl)
1532 atomic_inc(&ind_tbl->usecnt);
1533 }
1534 qp->uobject = &obj->uevent.uobject;
1535
1536 obj->uevent.uobject.object = qp;
1537
1538 memset(&resp, 0, sizeof resp);
1539 resp.base.qpn = qp->qp_num;
1540 resp.base.qp_handle = obj->uevent.uobject.id;
1541 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1542 resp.base.max_send_sge = attr.cap.max_send_sge;
1543 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1544 resp.base.max_send_wr = attr.cap.max_send_wr;
1545 resp.base.max_inline_data = attr.cap.max_inline_data;
1546
1547 resp.response_length = offsetof(typeof(resp), response_length) +
1548 sizeof(resp.response_length);
1549
1550 ret = cb(file, &resp, ucore);
1551 if (ret)
1552 goto err_cb;
1553
1554 if (xrcd) {
1555 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1556 uobject);
1557 atomic_inc(&obj->uxrcd->refcnt);
1558 uobj_put_read(xrcd_uobj);
1559 }
1560
1561 if (pd)
1562 uobj_put_obj_read(pd);
1563 if (scq)
1564 uobj_put_obj_read(scq);
1565 if (rcq && rcq != scq)
1566 uobj_put_obj_read(rcq);
1567 if (srq)
1568 uobj_put_obj_read(srq);
1569 if (ind_tbl)
1570 uobj_put_obj_read(ind_tbl);
1571
1572 uobj_alloc_commit(&obj->uevent.uobject);
1573
1574 return 0;
1575 err_cb:
1576 ib_destroy_qp(qp);
1577
1578 err_put:
1579 if (!IS_ERR(xrcd_uobj))
1580 uobj_put_read(xrcd_uobj);
1581 if (pd)
1582 uobj_put_obj_read(pd);
1583 if (scq)
1584 uobj_put_obj_read(scq);
1585 if (rcq && rcq != scq)
1586 uobj_put_obj_read(rcq);
1587 if (srq)
1588 uobj_put_obj_read(srq);
1589 if (ind_tbl)
1590 uobj_put_obj_read(ind_tbl);
1591
1592 uobj_alloc_abort(&obj->uevent.uobject);
1593 return ret;
1594 }
1595
1596 static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file,
1597 struct ib_uverbs_ex_create_qp_resp *resp,
1598 struct ib_udata *ucore)
1599 {
1600 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1601 return -EFAULT;
1602
1603 return 0;
1604 }
1605
1606 ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
1607 struct ib_device *ib_dev,
1608 const char __user *buf, int in_len,
1609 int out_len)
1610 {
1611 struct ib_uverbs_create_qp cmd;
1612 struct ib_uverbs_ex_create_qp cmd_ex;
1613 struct ib_udata ucore;
1614 struct ib_udata uhw;
1615 ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp);
1616 int err;
1617
1618 if (out_len < resp_size)
1619 return -ENOSPC;
1620
1621 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1622 return -EFAULT;
1623
1624 INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd),
1625 resp_size);
1626 INIT_UDATA(&uhw, buf + sizeof(cmd),
1627 (unsigned long)cmd.response + resp_size,
1628 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
1629 out_len - resp_size);
1630
1631 memset(&cmd_ex, 0, sizeof(cmd_ex));
1632 cmd_ex.user_handle = cmd.user_handle;
1633 cmd_ex.pd_handle = cmd.pd_handle;
1634 cmd_ex.send_cq_handle = cmd.send_cq_handle;
1635 cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1636 cmd_ex.srq_handle = cmd.srq_handle;
1637 cmd_ex.max_send_wr = cmd.max_send_wr;
1638 cmd_ex.max_recv_wr = cmd.max_recv_wr;
1639 cmd_ex.max_send_sge = cmd.max_send_sge;
1640 cmd_ex.max_recv_sge = cmd.max_recv_sge;
1641 cmd_ex.max_inline_data = cmd.max_inline_data;
1642 cmd_ex.sq_sig_all = cmd.sq_sig_all;
1643 cmd_ex.qp_type = cmd.qp_type;
1644 cmd_ex.is_srq = cmd.is_srq;
1645
1646 err = create_qp(file, &ucore, &uhw, &cmd_ex,
1647 offsetof(typeof(cmd_ex), is_srq) +
1648 sizeof(cmd.is_srq), ib_uverbs_create_qp_cb,
1649 NULL);
1650
1651 if (err)
1652 return err;
1653
1654 return in_len;
1655 }
1656
1657 static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file,
1658 struct ib_uverbs_ex_create_qp_resp *resp,
1659 struct ib_udata *ucore)
1660 {
1661 if (ib_copy_to_udata(ucore, resp, resp->response_length))
1662 return -EFAULT;
1663
1664 return 0;
1665 }
1666
1667 int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file,
1668 struct ib_device *ib_dev,
1669 struct ib_udata *ucore,
1670 struct ib_udata *uhw)
1671 {
1672 struct ib_uverbs_ex_create_qp_resp resp;
1673 struct ib_uverbs_ex_create_qp cmd = {0};
1674 int err;
1675
1676 if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) +
1677 sizeof(cmd.comp_mask)))
1678 return -EINVAL;
1679
1680 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
1681 if (err)
1682 return err;
1683
1684 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1685 return -EINVAL;
1686
1687 if (cmd.reserved)
1688 return -EINVAL;
1689
1690 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
1691 sizeof(resp.response_length)))
1692 return -ENOSPC;
1693
1694 err = create_qp(file, ucore, uhw, &cmd,
1695 min(ucore->inlen, sizeof(cmd)),
1696 ib_uverbs_ex_create_qp_cb, NULL);
1697
1698 if (err)
1699 return err;
1700
1701 return 0;
1702 }
1703
1704 ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file,
1705 struct ib_device *ib_dev,
1706 const char __user *buf, int in_len, int out_len)
1707 {
1708 struct ib_uverbs_open_qp cmd;
1709 struct ib_uverbs_create_qp_resp resp;
1710 struct ib_udata udata;
1711 struct ib_uqp_object *obj;
1712 struct ib_xrcd *xrcd;
1713 struct ib_uobject *uninitialized_var(xrcd_uobj);
1714 struct ib_qp *qp;
1715 struct ib_qp_open_attr attr;
1716 int ret;
1717
1718 if (out_len < sizeof resp)
1719 return -ENOSPC;
1720
1721 if (copy_from_user(&cmd, buf, sizeof cmd))
1722 return -EFAULT;
1723
1724 INIT_UDATA(&udata, buf + sizeof cmd,
1725 (unsigned long) cmd.response + sizeof resp,
1726 in_len - sizeof cmd, out_len - sizeof resp);
1727
1728 obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp),
1729 file->ucontext);
1730 if (IS_ERR(obj))
1731 return PTR_ERR(obj);
1732
1733 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd.pd_handle,
1734 file->ucontext);
1735 if (IS_ERR(xrcd_uobj)) {
1736 ret = -EINVAL;
1737 goto err_put;
1738 }
1739
1740 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1741 if (!xrcd) {
1742 ret = -EINVAL;
1743 goto err_xrcd;
1744 }
1745
1746 attr.event_handler = ib_uverbs_qp_event_handler;
1747 attr.qp_context = file;
1748 attr.qp_num = cmd.qpn;
1749 attr.qp_type = cmd.qp_type;
1750
1751 obj->uevent.events_reported = 0;
1752 INIT_LIST_HEAD(&obj->uevent.event_list);
1753 INIT_LIST_HEAD(&obj->mcast_list);
1754
1755 qp = ib_open_qp(xrcd, &attr);
1756 if (IS_ERR(qp)) {
1757 ret = PTR_ERR(qp);
1758 goto err_xrcd;
1759 }
1760
1761 obj->uevent.uobject.object = qp;
1762 obj->uevent.uobject.user_handle = cmd.user_handle;
1763
1764 memset(&resp, 0, sizeof resp);
1765 resp.qpn = qp->qp_num;
1766 resp.qp_handle = obj->uevent.uobject.id;
1767
1768 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1769 &resp, sizeof resp)) {
1770 ret = -EFAULT;
1771 goto err_destroy;
1772 }
1773
1774 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1775 atomic_inc(&obj->uxrcd->refcnt);
1776 qp->uobject = &obj->uevent.uobject;
1777 uobj_put_read(xrcd_uobj);
1778
1779
1780 uobj_alloc_commit(&obj->uevent.uobject);
1781
1782 return in_len;
1783
1784 err_destroy:
1785 ib_destroy_qp(qp);
1786 err_xrcd:
1787 uobj_put_read(xrcd_uobj);
1788 err_put:
1789 uobj_alloc_abort(&obj->uevent.uobject);
1790 return ret;
1791 }
1792
1793 ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
1794 struct ib_device *ib_dev,
1795 const char __user *buf, int in_len,
1796 int out_len)
1797 {
1798 struct ib_uverbs_query_qp cmd;
1799 struct ib_uverbs_query_qp_resp resp;
1800 struct ib_qp *qp;
1801 struct ib_qp_attr *attr;
1802 struct ib_qp_init_attr *init_attr;
1803 const struct ib_global_route *grh;
1804 int ret;
1805
1806 if (copy_from_user(&cmd, buf, sizeof cmd))
1807 return -EFAULT;
1808
1809 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1810 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1811 if (!attr || !init_attr) {
1812 ret = -ENOMEM;
1813 goto out;
1814 }
1815
1816 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
1817 if (!qp) {
1818 ret = -EINVAL;
1819 goto out;
1820 }
1821
1822 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1823
1824 uobj_put_obj_read(qp);
1825
1826 if (ret)
1827 goto out;
1828
1829 memset(&resp, 0, sizeof resp);
1830
1831 resp.qp_state = attr->qp_state;
1832 resp.cur_qp_state = attr->cur_qp_state;
1833 resp.path_mtu = attr->path_mtu;
1834 resp.path_mig_state = attr->path_mig_state;
1835 resp.qkey = attr->qkey;
1836 resp.rq_psn = attr->rq_psn;
1837 resp.sq_psn = attr->sq_psn;
1838 resp.dest_qp_num = attr->dest_qp_num;
1839 resp.qp_access_flags = attr->qp_access_flags;
1840 resp.pkey_index = attr->pkey_index;
1841 resp.alt_pkey_index = attr->alt_pkey_index;
1842 resp.sq_draining = attr->sq_draining;
1843 resp.max_rd_atomic = attr->max_rd_atomic;
1844 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1845 resp.min_rnr_timer = attr->min_rnr_timer;
1846 resp.port_num = attr->port_num;
1847 resp.timeout = attr->timeout;
1848 resp.retry_cnt = attr->retry_cnt;
1849 resp.rnr_retry = attr->rnr_retry;
1850 resp.alt_port_num = attr->alt_port_num;
1851 resp.alt_timeout = attr->alt_timeout;
1852
1853 resp.dest.dlid = rdma_ah_get_dlid(&attr->ah_attr);
1854 resp.dest.sl = rdma_ah_get_sl(&attr->ah_attr);
1855 resp.dest.src_path_bits = rdma_ah_get_path_bits(&attr->ah_attr);
1856 resp.dest.static_rate = rdma_ah_get_static_rate(&attr->ah_attr);
1857 resp.dest.is_global = !!(rdma_ah_get_ah_flags(&attr->ah_attr) &
1858 IB_AH_GRH);
1859 if (resp.dest.is_global) {
1860 grh = rdma_ah_read_grh(&attr->ah_attr);
1861 memcpy(resp.dest.dgid, grh->dgid.raw, 16);
1862 resp.dest.flow_label = grh->flow_label;
1863 resp.dest.sgid_index = grh->sgid_index;
1864 resp.dest.hop_limit = grh->hop_limit;
1865 resp.dest.traffic_class = grh->traffic_class;
1866 }
1867 resp.dest.port_num = rdma_ah_get_port_num(&attr->ah_attr);
1868
1869 resp.alt_dest.dlid = rdma_ah_get_dlid(&attr->alt_ah_attr);
1870 resp.alt_dest.sl = rdma_ah_get_sl(&attr->alt_ah_attr);
1871 resp.alt_dest.src_path_bits = rdma_ah_get_path_bits(&attr->alt_ah_attr);
1872 resp.alt_dest.static_rate
1873 = rdma_ah_get_static_rate(&attr->alt_ah_attr);
1874 resp.alt_dest.is_global
1875 = !!(rdma_ah_get_ah_flags(&attr->alt_ah_attr) &
1876 IB_AH_GRH);
1877 if (resp.alt_dest.is_global) {
1878 grh = rdma_ah_read_grh(&attr->alt_ah_attr);
1879 memcpy(resp.alt_dest.dgid, grh->dgid.raw, 16);
1880 resp.alt_dest.flow_label = grh->flow_label;
1881 resp.alt_dest.sgid_index = grh->sgid_index;
1882 resp.alt_dest.hop_limit = grh->hop_limit;
1883 resp.alt_dest.traffic_class = grh->traffic_class;
1884 }
1885 resp.alt_dest.port_num = rdma_ah_get_port_num(&attr->alt_ah_attr);
1886
1887 resp.max_send_wr = init_attr->cap.max_send_wr;
1888 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1889 resp.max_send_sge = init_attr->cap.max_send_sge;
1890 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1891 resp.max_inline_data = init_attr->cap.max_inline_data;
1892 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1893
1894 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1895 &resp, sizeof resp))
1896 ret = -EFAULT;
1897
1898 out:
1899 kfree(attr);
1900 kfree(init_attr);
1901
1902 return ret ? ret : in_len;
1903 }
1904
1905 /* Remove ignored fields set in the attribute mask */
1906 static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1907 {
1908 switch (qp_type) {
1909 case IB_QPT_XRC_INI:
1910 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1911 case IB_QPT_XRC_TGT:
1912 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1913 IB_QP_RNR_RETRY);
1914 default:
1915 return mask;
1916 }
1917 }
1918
1919 static int modify_qp(struct ib_uverbs_file *file,
1920 struct ib_uverbs_ex_modify_qp *cmd, struct ib_udata *udata)
1921 {
1922 struct ib_qp_attr *attr;
1923 struct ib_qp *qp;
1924 int ret;
1925
1926 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1927 if (!attr)
1928 return -ENOMEM;
1929
1930 qp = uobj_get_obj_read(qp, cmd->base.qp_handle, file->ucontext);
1931 if (!qp) {
1932 ret = -EINVAL;
1933 goto out;
1934 }
1935
1936 if ((cmd->base.attr_mask & IB_QP_PORT) &&
1937 !rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1938 ret = -EINVAL;
1939 goto release_qp;
1940 }
1941
1942 attr->qp_state = cmd->base.qp_state;
1943 attr->cur_qp_state = cmd->base.cur_qp_state;
1944 attr->path_mtu = cmd->base.path_mtu;
1945 attr->path_mig_state = cmd->base.path_mig_state;
1946 attr->qkey = cmd->base.qkey;
1947 attr->rq_psn = cmd->base.rq_psn;
1948 attr->sq_psn = cmd->base.sq_psn;
1949 attr->dest_qp_num = cmd->base.dest_qp_num;
1950 attr->qp_access_flags = cmd->base.qp_access_flags;
1951 attr->pkey_index = cmd->base.pkey_index;
1952 attr->alt_pkey_index = cmd->base.alt_pkey_index;
1953 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
1954 attr->max_rd_atomic = cmd->base.max_rd_atomic;
1955 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
1956 attr->min_rnr_timer = cmd->base.min_rnr_timer;
1957 attr->port_num = cmd->base.port_num;
1958 attr->timeout = cmd->base.timeout;
1959 attr->retry_cnt = cmd->base.retry_cnt;
1960 attr->rnr_retry = cmd->base.rnr_retry;
1961 attr->alt_port_num = cmd->base.alt_port_num;
1962 attr->alt_timeout = cmd->base.alt_timeout;
1963 attr->rate_limit = cmd->rate_limit;
1964
1965 attr->ah_attr.type = rdma_ah_find_type(qp->device,
1966 cmd->base.dest.port_num);
1967 if (cmd->base.dest.is_global) {
1968 rdma_ah_set_grh(&attr->ah_attr, NULL,
1969 cmd->base.dest.flow_label,
1970 cmd->base.dest.sgid_index,
1971 cmd->base.dest.hop_limit,
1972 cmd->base.dest.traffic_class);
1973 rdma_ah_set_dgid_raw(&attr->ah_attr, cmd->base.dest.dgid);
1974 } else {
1975 rdma_ah_set_ah_flags(&attr->ah_attr, 0);
1976 }
1977 rdma_ah_set_dlid(&attr->ah_attr, cmd->base.dest.dlid);
1978 rdma_ah_set_sl(&attr->ah_attr, cmd->base.dest.sl);
1979 rdma_ah_set_path_bits(&attr->ah_attr, cmd->base.dest.src_path_bits);
1980 rdma_ah_set_static_rate(&attr->ah_attr, cmd->base.dest.static_rate);
1981 rdma_ah_set_port_num(&attr->ah_attr,
1982 cmd->base.dest.port_num);
1983
1984 attr->alt_ah_attr.type = rdma_ah_find_type(qp->device,
1985 cmd->base.dest.port_num);
1986 if (cmd->base.alt_dest.is_global) {
1987 rdma_ah_set_grh(&attr->alt_ah_attr, NULL,
1988 cmd->base.alt_dest.flow_label,
1989 cmd->base.alt_dest.sgid_index,
1990 cmd->base.alt_dest.hop_limit,
1991 cmd->base.alt_dest.traffic_class);
1992 rdma_ah_set_dgid_raw(&attr->alt_ah_attr,
1993 cmd->base.alt_dest.dgid);
1994 } else {
1995 rdma_ah_set_ah_flags(&attr->alt_ah_attr, 0);
1996 }
1997
1998 rdma_ah_set_dlid(&attr->alt_ah_attr, cmd->base.alt_dest.dlid);
1999 rdma_ah_set_sl(&attr->alt_ah_attr, cmd->base.alt_dest.sl);
2000 rdma_ah_set_path_bits(&attr->alt_ah_attr,
2001 cmd->base.alt_dest.src_path_bits);
2002 rdma_ah_set_static_rate(&attr->alt_ah_attr,
2003 cmd->base.alt_dest.static_rate);
2004 rdma_ah_set_port_num(&attr->alt_ah_attr,
2005 cmd->base.alt_dest.port_num);
2006
2007 ret = ib_modify_qp_with_udata(qp, attr,
2008 modify_qp_mask(qp->qp_type,
2009 cmd->base.attr_mask),
2010 udata);
2011
2012 release_qp:
2013 uobj_put_obj_read(qp);
2014 out:
2015 kfree(attr);
2016
2017 return ret;
2018 }
2019
2020 ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
2021 struct ib_device *ib_dev,
2022 const char __user *buf, int in_len,
2023 int out_len)
2024 {
2025 struct ib_uverbs_ex_modify_qp cmd = {};
2026 struct ib_udata udata;
2027 int ret;
2028
2029 if (copy_from_user(&cmd.base, buf, sizeof(cmd.base)))
2030 return -EFAULT;
2031
2032 if (cmd.base.attr_mask &
2033 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1))
2034 return -EOPNOTSUPP;
2035
2036 INIT_UDATA(&udata, buf + sizeof(cmd.base), NULL,
2037 in_len - sizeof(cmd.base), out_len);
2038
2039 ret = modify_qp(file, &cmd, &udata);
2040 if (ret)
2041 return ret;
2042
2043 return in_len;
2044 }
2045
2046 int ib_uverbs_ex_modify_qp(struct ib_uverbs_file *file,
2047 struct ib_device *ib_dev,
2048 struct ib_udata *ucore,
2049 struct ib_udata *uhw)
2050 {
2051 struct ib_uverbs_ex_modify_qp cmd = {};
2052 int ret;
2053
2054 /*
2055 * Last bit is reserved for extending the attr_mask by
2056 * using another field.
2057 */
2058 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
2059
2060 if (ucore->inlen < sizeof(cmd.base))
2061 return -EINVAL;
2062
2063 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
2064 if (ret)
2065 return ret;
2066
2067 if (cmd.base.attr_mask &
2068 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1))
2069 return -EOPNOTSUPP;
2070
2071 if (ucore->inlen > sizeof(cmd)) {
2072 if (ib_is_udata_cleared(ucore, sizeof(cmd),
2073 ucore->inlen - sizeof(cmd)))
2074 return -EOPNOTSUPP;
2075 }
2076
2077 ret = modify_qp(file, &cmd, uhw);
2078
2079 return ret;
2080 }
2081
2082 ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
2083 struct ib_device *ib_dev,
2084 const char __user *buf, int in_len,
2085 int out_len)
2086 {
2087 struct ib_uverbs_destroy_qp cmd;
2088 struct ib_uverbs_destroy_qp_resp resp;
2089 struct ib_uobject *uobj;
2090 struct ib_uqp_object *obj;
2091 int ret = -EINVAL;
2092
2093 if (copy_from_user(&cmd, buf, sizeof cmd))
2094 return -EFAULT;
2095
2096 memset(&resp, 0, sizeof resp);
2097
2098 uobj = uobj_get_write(uobj_get_type(qp), cmd.qp_handle,
2099 file->ucontext);
2100 if (IS_ERR(uobj))
2101 return PTR_ERR(uobj);
2102
2103 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
2104 /*
2105 * Make sure we don't free the memory in remove_commit as we still
2106 * needs the uobject memory to create the response.
2107 */
2108 uverbs_uobject_get(uobj);
2109
2110 ret = uobj_remove_commit(uobj);
2111 if (ret) {
2112 uverbs_uobject_put(uobj);
2113 return ret;
2114 }
2115
2116 resp.events_reported = obj->uevent.events_reported;
2117 uverbs_uobject_put(uobj);
2118
2119 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2120 &resp, sizeof resp))
2121 return -EFAULT;
2122
2123 return in_len;
2124 }
2125
2126 static void *alloc_wr(size_t wr_size, __u32 num_sge)
2127 {
2128 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) /
2129 sizeof (struct ib_sge))
2130 return NULL;
2131
2132 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) +
2133 num_sge * sizeof (struct ib_sge), GFP_KERNEL);
2134 }
2135
2136 ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
2137 struct ib_device *ib_dev,
2138 const char __user *buf, int in_len,
2139 int out_len)
2140 {
2141 struct ib_uverbs_post_send cmd;
2142 struct ib_uverbs_post_send_resp resp;
2143 struct ib_uverbs_send_wr *user_wr;
2144 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
2145 struct ib_qp *qp;
2146 int i, sg_ind;
2147 int is_ud;
2148 ssize_t ret = -EINVAL;
2149 size_t next_size;
2150
2151 if (copy_from_user(&cmd, buf, sizeof cmd))
2152 return -EFAULT;
2153
2154 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
2155 cmd.sge_count * sizeof (struct ib_uverbs_sge))
2156 return -EINVAL;
2157
2158 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
2159 return -EINVAL;
2160
2161 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2162 if (!user_wr)
2163 return -ENOMEM;
2164
2165 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2166 if (!qp)
2167 goto out;
2168
2169 is_ud = qp->qp_type == IB_QPT_UD;
2170 sg_ind = 0;
2171 last = NULL;
2172 for (i = 0; i < cmd.wr_count; ++i) {
2173 if (copy_from_user(user_wr,
2174 buf + sizeof cmd + i * cmd.wqe_size,
2175 cmd.wqe_size)) {
2176 ret = -EFAULT;
2177 goto out_put;
2178 }
2179
2180 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2181 ret = -EINVAL;
2182 goto out_put;
2183 }
2184
2185 if (is_ud) {
2186 struct ib_ud_wr *ud;
2187
2188 if (user_wr->opcode != IB_WR_SEND &&
2189 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2190 ret = -EINVAL;
2191 goto out_put;
2192 }
2193
2194 next_size = sizeof(*ud);
2195 ud = alloc_wr(next_size, user_wr->num_sge);
2196 if (!ud) {
2197 ret = -ENOMEM;
2198 goto out_put;
2199 }
2200
2201 ud->ah = uobj_get_obj_read(ah, user_wr->wr.ud.ah,
2202 file->ucontext);
2203 if (!ud->ah) {
2204 kfree(ud);
2205 ret = -EINVAL;
2206 goto out_put;
2207 }
2208 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2209 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2210
2211 next = &ud->wr;
2212 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2213 user_wr->opcode == IB_WR_RDMA_WRITE ||
2214 user_wr->opcode == IB_WR_RDMA_READ) {
2215 struct ib_rdma_wr *rdma;
2216
2217 next_size = sizeof(*rdma);
2218 rdma = alloc_wr(next_size, user_wr->num_sge);
2219 if (!rdma) {
2220 ret = -ENOMEM;
2221 goto out_put;
2222 }
2223
2224 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2225 rdma->rkey = user_wr->wr.rdma.rkey;
2226
2227 next = &rdma->wr;
2228 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2229 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2230 struct ib_atomic_wr *atomic;
2231
2232 next_size = sizeof(*atomic);
2233 atomic = alloc_wr(next_size, user_wr->num_sge);
2234 if (!atomic) {
2235 ret = -ENOMEM;
2236 goto out_put;
2237 }
2238
2239 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2240 atomic->compare_add = user_wr->wr.atomic.compare_add;
2241 atomic->swap = user_wr->wr.atomic.swap;
2242 atomic->rkey = user_wr->wr.atomic.rkey;
2243
2244 next = &atomic->wr;
2245 } else if (user_wr->opcode == IB_WR_SEND ||
2246 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2247 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2248 next_size = sizeof(*next);
2249 next = alloc_wr(next_size, user_wr->num_sge);
2250 if (!next) {
2251 ret = -ENOMEM;
2252 goto out_put;
2253 }
2254 } else {
2255 ret = -EINVAL;
2256 goto out_put;
2257 }
2258
2259 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2260 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2261 next->ex.imm_data =
2262 (__be32 __force) user_wr->ex.imm_data;
2263 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2264 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
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 next->opcode = user_wr->opcode;
2277 next->send_flags = user_wr->send_flags;
2278
2279 if (next->num_sge) {
2280 next->sg_list = (void *) next +
2281 ALIGN(next_size, sizeof(struct ib_sge));
2282 if (copy_from_user(next->sg_list,
2283 buf + sizeof cmd +
2284 cmd.wr_count * cmd.wqe_size +
2285 sg_ind * sizeof (struct ib_sge),
2286 next->num_sge * sizeof (struct ib_sge))) {
2287 ret = -EFAULT;
2288 goto out_put;
2289 }
2290 sg_ind += next->num_sge;
2291 } else
2292 next->sg_list = NULL;
2293 }
2294
2295 resp.bad_wr = 0;
2296 ret = qp->device->post_send(qp->real_qp, wr, &bad_wr);
2297 if (ret)
2298 for (next = wr; next; next = next->next) {
2299 ++resp.bad_wr;
2300 if (next == bad_wr)
2301 break;
2302 }
2303
2304 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2305 &resp, sizeof resp))
2306 ret = -EFAULT;
2307
2308 out_put:
2309 uobj_put_obj_read(qp);
2310
2311 while (wr) {
2312 if (is_ud && ud_wr(wr)->ah)
2313 uobj_put_obj_read(ud_wr(wr)->ah);
2314 next = wr->next;
2315 kfree(wr);
2316 wr = next;
2317 }
2318
2319 out:
2320 kfree(user_wr);
2321
2322 return ret ? ret : in_len;
2323 }
2324
2325 static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
2326 int in_len,
2327 u32 wr_count,
2328 u32 sge_count,
2329 u32 wqe_size)
2330 {
2331 struct ib_uverbs_recv_wr *user_wr;
2332 struct ib_recv_wr *wr = NULL, *last, *next;
2333 int sg_ind;
2334 int i;
2335 int ret;
2336
2337 if (in_len < wqe_size * wr_count +
2338 sge_count * sizeof (struct ib_uverbs_sge))
2339 return ERR_PTR(-EINVAL);
2340
2341 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
2342 return ERR_PTR(-EINVAL);
2343
2344 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2345 if (!user_wr)
2346 return ERR_PTR(-ENOMEM);
2347
2348 sg_ind = 0;
2349 last = NULL;
2350 for (i = 0; i < wr_count; ++i) {
2351 if (copy_from_user(user_wr, buf + i * wqe_size,
2352 wqe_size)) {
2353 ret = -EFAULT;
2354 goto err;
2355 }
2356
2357 if (user_wr->num_sge + sg_ind > sge_count) {
2358 ret = -EINVAL;
2359 goto err;
2360 }
2361
2362 if (user_wr->num_sge >=
2363 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) /
2364 sizeof (struct ib_sge)) {
2365 ret = -EINVAL;
2366 goto err;
2367 }
2368
2369 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2370 user_wr->num_sge * sizeof (struct ib_sge),
2371 GFP_KERNEL);
2372 if (!next) {
2373 ret = -ENOMEM;
2374 goto err;
2375 }
2376
2377 if (!last)
2378 wr = next;
2379 else
2380 last->next = next;
2381 last = next;
2382
2383 next->next = NULL;
2384 next->wr_id = user_wr->wr_id;
2385 next->num_sge = user_wr->num_sge;
2386
2387 if (next->num_sge) {
2388 next->sg_list = (void *) next +
2389 ALIGN(sizeof *next, sizeof (struct ib_sge));
2390 if (copy_from_user(next->sg_list,
2391 buf + wr_count * wqe_size +
2392 sg_ind * sizeof (struct ib_sge),
2393 next->num_sge * sizeof (struct ib_sge))) {
2394 ret = -EFAULT;
2395 goto err;
2396 }
2397 sg_ind += next->num_sge;
2398 } else
2399 next->sg_list = NULL;
2400 }
2401
2402 kfree(user_wr);
2403 return wr;
2404
2405 err:
2406 kfree(user_wr);
2407
2408 while (wr) {
2409 next = wr->next;
2410 kfree(wr);
2411 wr = next;
2412 }
2413
2414 return ERR_PTR(ret);
2415 }
2416
2417 ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
2418 struct ib_device *ib_dev,
2419 const char __user *buf, int in_len,
2420 int out_len)
2421 {
2422 struct ib_uverbs_post_recv cmd;
2423 struct ib_uverbs_post_recv_resp resp;
2424 struct ib_recv_wr *wr, *next, *bad_wr;
2425 struct ib_qp *qp;
2426 ssize_t ret = -EINVAL;
2427
2428 if (copy_from_user(&cmd, buf, sizeof cmd))
2429 return -EFAULT;
2430
2431 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2432 in_len - sizeof cmd, cmd.wr_count,
2433 cmd.sge_count, cmd.wqe_size);
2434 if (IS_ERR(wr))
2435 return PTR_ERR(wr);
2436
2437 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2438 if (!qp)
2439 goto out;
2440
2441 resp.bad_wr = 0;
2442 ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr);
2443
2444 uobj_put_obj_read(qp);
2445 if (ret) {
2446 for (next = wr; next; next = next->next) {
2447 ++resp.bad_wr;
2448 if (next == bad_wr)
2449 break;
2450 }
2451 }
2452
2453 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2454 &resp, sizeof resp))
2455 ret = -EFAULT;
2456
2457 out:
2458 while (wr) {
2459 next = wr->next;
2460 kfree(wr);
2461 wr = next;
2462 }
2463
2464 return ret ? ret : in_len;
2465 }
2466
2467 ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
2468 struct ib_device *ib_dev,
2469 const char __user *buf, int in_len,
2470 int out_len)
2471 {
2472 struct ib_uverbs_post_srq_recv cmd;
2473 struct ib_uverbs_post_srq_recv_resp resp;
2474 struct ib_recv_wr *wr, *next, *bad_wr;
2475 struct ib_srq *srq;
2476 ssize_t ret = -EINVAL;
2477
2478 if (copy_from_user(&cmd, buf, sizeof cmd))
2479 return -EFAULT;
2480
2481 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2482 in_len - sizeof cmd, cmd.wr_count,
2483 cmd.sge_count, cmd.wqe_size);
2484 if (IS_ERR(wr))
2485 return PTR_ERR(wr);
2486
2487 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext);
2488 if (!srq)
2489 goto out;
2490
2491 resp.bad_wr = 0;
2492 ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
2493
2494 uobj_put_obj_read(srq);
2495
2496 if (ret)
2497 for (next = wr; next; next = next->next) {
2498 ++resp.bad_wr;
2499 if (next == bad_wr)
2500 break;
2501 }
2502
2503 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2504 &resp, sizeof resp))
2505 ret = -EFAULT;
2506
2507 out:
2508 while (wr) {
2509 next = wr->next;
2510 kfree(wr);
2511 wr = next;
2512 }
2513
2514 return ret ? ret : in_len;
2515 }
2516
2517 ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
2518 struct ib_device *ib_dev,
2519 const char __user *buf, int in_len,
2520 int out_len)
2521 {
2522 struct ib_uverbs_create_ah cmd;
2523 struct ib_uverbs_create_ah_resp resp;
2524 struct ib_uobject *uobj;
2525 struct ib_pd *pd;
2526 struct ib_ah *ah;
2527 struct rdma_ah_attr attr;
2528 int ret;
2529 struct ib_udata udata;
2530 u8 *dmac;
2531
2532 if (out_len < sizeof resp)
2533 return -ENOSPC;
2534
2535 if (copy_from_user(&cmd, buf, sizeof cmd))
2536 return -EFAULT;
2537
2538 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num))
2539 return -EINVAL;
2540
2541 INIT_UDATA(&udata, buf + sizeof(cmd),
2542 (unsigned long)cmd.response + sizeof(resp),
2543 in_len - sizeof(cmd), out_len - sizeof(resp));
2544
2545 uobj = uobj_alloc(uobj_get_type(ah), file->ucontext);
2546 if (IS_ERR(uobj))
2547 return PTR_ERR(uobj);
2548
2549 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext);
2550 if (!pd) {
2551 ret = -EINVAL;
2552 goto err;
2553 }
2554
2555 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2556 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2557 rdma_ah_set_sl(&attr, cmd.attr.sl);
2558 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2559 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2560 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2561
2562 if (cmd.attr.is_global) {
2563 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2564 cmd.attr.grh.sgid_index,
2565 cmd.attr.grh.hop_limit,
2566 cmd.attr.grh.traffic_class);
2567 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2568 } else {
2569 rdma_ah_set_ah_flags(&attr, 0);
2570 }
2571 dmac = rdma_ah_retrieve_dmac(&attr);
2572 if (dmac)
2573 memset(dmac, 0, ETH_ALEN);
2574
2575 ah = pd->device->create_ah(pd, &attr, &udata);
2576
2577 if (IS_ERR(ah)) {
2578 ret = PTR_ERR(ah);
2579 goto err_put;
2580 }
2581
2582 ah->device = pd->device;
2583 ah->pd = pd;
2584 atomic_inc(&pd->usecnt);
2585 ah->uobject = uobj;
2586 uobj->user_handle = cmd.user_handle;
2587 uobj->object = ah;
2588
2589 resp.ah_handle = uobj->id;
2590
2591 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2592 &resp, sizeof resp)) {
2593 ret = -EFAULT;
2594 goto err_copy;
2595 }
2596
2597 uobj_put_obj_read(pd);
2598 uobj_alloc_commit(uobj);
2599
2600 return in_len;
2601
2602 err_copy:
2603 rdma_destroy_ah(ah);
2604
2605 err_put:
2606 uobj_put_obj_read(pd);
2607
2608 err:
2609 uobj_alloc_abort(uobj);
2610 return ret;
2611 }
2612
2613 ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
2614 struct ib_device *ib_dev,
2615 const char __user *buf, int in_len, int out_len)
2616 {
2617 struct ib_uverbs_destroy_ah cmd;
2618 struct ib_uobject *uobj;
2619 int ret;
2620
2621 if (copy_from_user(&cmd, buf, sizeof cmd))
2622 return -EFAULT;
2623
2624 uobj = uobj_get_write(uobj_get_type(ah), cmd.ah_handle,
2625 file->ucontext);
2626 if (IS_ERR(uobj))
2627 return PTR_ERR(uobj);
2628
2629 ret = uobj_remove_commit(uobj);
2630 return ret ?: in_len;
2631 }
2632
2633 ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
2634 struct ib_device *ib_dev,
2635 const char __user *buf, int in_len,
2636 int out_len)
2637 {
2638 struct ib_uverbs_attach_mcast cmd;
2639 struct ib_qp *qp;
2640 struct ib_uqp_object *obj;
2641 struct ib_uverbs_mcast_entry *mcast;
2642 int ret;
2643
2644 if (copy_from_user(&cmd, buf, sizeof cmd))
2645 return -EFAULT;
2646
2647 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2648 if (!qp)
2649 return -EINVAL;
2650
2651 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2652
2653 mutex_lock(&obj->mcast_lock);
2654 list_for_each_entry(mcast, &obj->mcast_list, list)
2655 if (cmd.mlid == mcast->lid &&
2656 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2657 ret = 0;
2658 goto out_put;
2659 }
2660
2661 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2662 if (!mcast) {
2663 ret = -ENOMEM;
2664 goto out_put;
2665 }
2666
2667 mcast->lid = cmd.mlid;
2668 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2669
2670 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2671 if (!ret)
2672 list_add_tail(&mcast->list, &obj->mcast_list);
2673 else
2674 kfree(mcast);
2675
2676 out_put:
2677 mutex_unlock(&obj->mcast_lock);
2678 uobj_put_obj_read(qp);
2679
2680 return ret ? ret : in_len;
2681 }
2682
2683 ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
2684 struct ib_device *ib_dev,
2685 const char __user *buf, int in_len,
2686 int out_len)
2687 {
2688 struct ib_uverbs_detach_mcast cmd;
2689 struct ib_uqp_object *obj;
2690 struct ib_qp *qp;
2691 struct ib_uverbs_mcast_entry *mcast;
2692 int ret = -EINVAL;
2693 bool found = false;
2694
2695 if (copy_from_user(&cmd, buf, sizeof cmd))
2696 return -EFAULT;
2697
2698 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2699 if (!qp)
2700 return -EINVAL;
2701
2702 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2703 mutex_lock(&obj->mcast_lock);
2704
2705 list_for_each_entry(mcast, &obj->mcast_list, list)
2706 if (cmd.mlid == mcast->lid &&
2707 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2708 list_del(&mcast->list);
2709 kfree(mcast);
2710 found = true;
2711 break;
2712 }
2713
2714 if (!found) {
2715 ret = -EINVAL;
2716 goto out_put;
2717 }
2718
2719 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2720
2721 out_put:
2722 mutex_unlock(&obj->mcast_lock);
2723 uobj_put_obj_read(qp);
2724 return ret ? ret : in_len;
2725 }
2726
2727 static int kern_spec_to_ib_spec_action(struct ib_uverbs_flow_spec *kern_spec,
2728 union ib_flow_spec *ib_spec)
2729 {
2730 ib_spec->type = kern_spec->type;
2731 switch (ib_spec->type) {
2732 case IB_FLOW_SPEC_ACTION_TAG:
2733 if (kern_spec->flow_tag.size !=
2734 sizeof(struct ib_uverbs_flow_spec_action_tag))
2735 return -EINVAL;
2736
2737 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2738 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2739 break;
2740 case IB_FLOW_SPEC_ACTION_DROP:
2741 if (kern_spec->drop.size !=
2742 sizeof(struct ib_uverbs_flow_spec_action_drop))
2743 return -EINVAL;
2744
2745 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2746 break;
2747 default:
2748 return -EINVAL;
2749 }
2750 return 0;
2751 }
2752
2753 static size_t kern_spec_filter_sz(struct ib_uverbs_flow_spec_hdr *spec)
2754 {
2755 /* Returns user space filter size, includes padding */
2756 return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2;
2757 }
2758
2759 static ssize_t spec_filter_size(void *kern_spec_filter, u16 kern_filter_size,
2760 u16 ib_real_filter_sz)
2761 {
2762 /*
2763 * User space filter structures must be 64 bit aligned, otherwise this
2764 * may pass, but we won't handle additional new attributes.
2765 */
2766
2767 if (kern_filter_size > ib_real_filter_sz) {
2768 if (memchr_inv(kern_spec_filter +
2769 ib_real_filter_sz, 0,
2770 kern_filter_size - ib_real_filter_sz))
2771 return -EINVAL;
2772 return ib_real_filter_sz;
2773 }
2774 return kern_filter_size;
2775 }
2776
2777 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2778 union ib_flow_spec *ib_spec)
2779 {
2780 ssize_t actual_filter_sz;
2781 ssize_t kern_filter_sz;
2782 ssize_t ib_filter_sz;
2783 void *kern_spec_mask;
2784 void *kern_spec_val;
2785
2786 if (kern_spec->reserved)
2787 return -EINVAL;
2788
2789 ib_spec->type = kern_spec->type;
2790
2791 kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr);
2792 /* User flow spec size must be aligned to 4 bytes */
2793 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2794 return -EINVAL;
2795
2796 kern_spec_val = (void *)kern_spec +
2797 sizeof(struct ib_uverbs_flow_spec_hdr);
2798 kern_spec_mask = kern_spec_val + kern_filter_sz;
2799 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2800 return -EINVAL;
2801
2802 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2803 case IB_FLOW_SPEC_ETH:
2804 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2805 actual_filter_sz = spec_filter_size(kern_spec_mask,
2806 kern_filter_sz,
2807 ib_filter_sz);
2808 if (actual_filter_sz <= 0)
2809 return -EINVAL;
2810 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2811 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2812 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2813 break;
2814 case IB_FLOW_SPEC_IPV4:
2815 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz);
2816 actual_filter_sz = spec_filter_size(kern_spec_mask,
2817 kern_filter_sz,
2818 ib_filter_sz);
2819 if (actual_filter_sz <= 0)
2820 return -EINVAL;
2821 ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
2822 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2823 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2824 break;
2825 case IB_FLOW_SPEC_IPV6:
2826 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz);
2827 actual_filter_sz = spec_filter_size(kern_spec_mask,
2828 kern_filter_sz,
2829 ib_filter_sz);
2830 if (actual_filter_sz <= 0)
2831 return -EINVAL;
2832 ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
2833 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2834 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2835
2836 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2837 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2838 return -EINVAL;
2839 break;
2840 case IB_FLOW_SPEC_TCP:
2841 case IB_FLOW_SPEC_UDP:
2842 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
2843 actual_filter_sz = spec_filter_size(kern_spec_mask,
2844 kern_filter_sz,
2845 ib_filter_sz);
2846 if (actual_filter_sz <= 0)
2847 return -EINVAL;
2848 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2849 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2850 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2851 break;
2852 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2853 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz);
2854 actual_filter_sz = spec_filter_size(kern_spec_mask,
2855 kern_filter_sz,
2856 ib_filter_sz);
2857 if (actual_filter_sz <= 0)
2858 return -EINVAL;
2859 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2860 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2861 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2862
2863 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2864 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2865 return -EINVAL;
2866 break;
2867 default:
2868 return -EINVAL;
2869 }
2870 return 0;
2871 }
2872
2873 static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
2874 union ib_flow_spec *ib_spec)
2875 {
2876 if (kern_spec->reserved)
2877 return -EINVAL;
2878
2879 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2880 return kern_spec_to_ib_spec_action(kern_spec, ib_spec);
2881 else
2882 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2883 }
2884
2885 int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file,
2886 struct ib_device *ib_dev,
2887 struct ib_udata *ucore,
2888 struct ib_udata *uhw)
2889 {
2890 struct ib_uverbs_ex_create_wq cmd = {};
2891 struct ib_uverbs_ex_create_wq_resp resp = {};
2892 struct ib_uwq_object *obj;
2893 int err = 0;
2894 struct ib_cq *cq;
2895 struct ib_pd *pd;
2896 struct ib_wq *wq;
2897 struct ib_wq_init_attr wq_init_attr = {};
2898 size_t required_cmd_sz;
2899 size_t required_resp_len;
2900
2901 required_cmd_sz = offsetof(typeof(cmd), max_sge) + sizeof(cmd.max_sge);
2902 required_resp_len = offsetof(typeof(resp), wqn) + sizeof(resp.wqn);
2903
2904 if (ucore->inlen < required_cmd_sz)
2905 return -EINVAL;
2906
2907 if (ucore->outlen < required_resp_len)
2908 return -ENOSPC;
2909
2910 if (ucore->inlen > sizeof(cmd) &&
2911 !ib_is_udata_cleared(ucore, sizeof(cmd),
2912 ucore->inlen - sizeof(cmd)))
2913 return -EOPNOTSUPP;
2914
2915 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
2916 if (err)
2917 return err;
2918
2919 if (cmd.comp_mask)
2920 return -EOPNOTSUPP;
2921
2922 obj = (struct ib_uwq_object *)uobj_alloc(uobj_get_type(wq),
2923 file->ucontext);
2924 if (IS_ERR(obj))
2925 return PTR_ERR(obj);
2926
2927 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext);
2928 if (!pd) {
2929 err = -EINVAL;
2930 goto err_uobj;
2931 }
2932
2933 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext);
2934 if (!cq) {
2935 err = -EINVAL;
2936 goto err_put_pd;
2937 }
2938
2939 wq_init_attr.cq = cq;
2940 wq_init_attr.max_sge = cmd.max_sge;
2941 wq_init_attr.max_wr = cmd.max_wr;
2942 wq_init_attr.wq_context = file;
2943 wq_init_attr.wq_type = cmd.wq_type;
2944 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2945 if (ucore->inlen >= (offsetof(typeof(cmd), create_flags) +
2946 sizeof(cmd.create_flags)))
2947 wq_init_attr.create_flags = cmd.create_flags;
2948 obj->uevent.events_reported = 0;
2949 INIT_LIST_HEAD(&obj->uevent.event_list);
2950 wq = pd->device->create_wq(pd, &wq_init_attr, uhw);
2951 if (IS_ERR(wq)) {
2952 err = PTR_ERR(wq);
2953 goto err_put_cq;
2954 }
2955
2956 wq->uobject = &obj->uevent.uobject;
2957 obj->uevent.uobject.object = wq;
2958 wq->wq_type = wq_init_attr.wq_type;
2959 wq->cq = cq;
2960 wq->pd = pd;
2961 wq->device = pd->device;
2962 wq->wq_context = wq_init_attr.wq_context;
2963 atomic_set(&wq->usecnt, 0);
2964 atomic_inc(&pd->usecnt);
2965 atomic_inc(&cq->usecnt);
2966 wq->uobject = &obj->uevent.uobject;
2967 obj->uevent.uobject.object = wq;
2968
2969 memset(&resp, 0, sizeof(resp));
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 = required_resp_len;
2975 err = ib_copy_to_udata(ucore,
2976 &resp, resp.response_length);
2977 if (err)
2978 goto err_copy;
2979
2980 uobj_put_obj_read(pd);
2981 uobj_put_obj_read(cq);
2982 uobj_alloc_commit(&obj->uevent.uobject);
2983 return 0;
2984
2985 err_copy:
2986 ib_destroy_wq(wq);
2987 err_put_cq:
2988 uobj_put_obj_read(cq);
2989 err_put_pd:
2990 uobj_put_obj_read(pd);
2991 err_uobj:
2992 uobj_alloc_abort(&obj->uevent.uobject);
2993
2994 return err;
2995 }
2996
2997 int ib_uverbs_ex_destroy_wq(struct ib_uverbs_file *file,
2998 struct ib_device *ib_dev,
2999 struct ib_udata *ucore,
3000 struct ib_udata *uhw)
3001 {
3002 struct ib_uverbs_ex_destroy_wq cmd = {};
3003 struct ib_uverbs_ex_destroy_wq_resp resp = {};
3004 struct ib_uobject *uobj;
3005 struct ib_uwq_object *obj;
3006 size_t required_cmd_sz;
3007 size_t required_resp_len;
3008 int ret;
3009
3010 required_cmd_sz = offsetof(typeof(cmd), wq_handle) + sizeof(cmd.wq_handle);
3011 required_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
3012
3013 if (ucore->inlen < required_cmd_sz)
3014 return -EINVAL;
3015
3016 if (ucore->outlen < required_resp_len)
3017 return -ENOSPC;
3018
3019 if (ucore->inlen > sizeof(cmd) &&
3020 !ib_is_udata_cleared(ucore, sizeof(cmd),
3021 ucore->inlen - sizeof(cmd)))
3022 return -EOPNOTSUPP;
3023
3024 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3025 if (ret)
3026 return ret;
3027
3028 if (cmd.comp_mask)
3029 return -EOPNOTSUPP;
3030
3031 resp.response_length = required_resp_len;
3032 uobj = uobj_get_write(uobj_get_type(wq), cmd.wq_handle,
3033 file->ucontext);
3034 if (IS_ERR(uobj))
3035 return PTR_ERR(uobj);
3036
3037 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
3038 /*
3039 * Make sure we don't free the memory in remove_commit as we still
3040 * needs the uobject memory to create the response.
3041 */
3042 uverbs_uobject_get(uobj);
3043
3044 ret = uobj_remove_commit(uobj);
3045 resp.events_reported = obj->uevent.events_reported;
3046 uverbs_uobject_put(uobj);
3047 if (ret)
3048 return ret;
3049
3050 return ib_copy_to_udata(ucore, &resp, resp.response_length);
3051 }
3052
3053 int ib_uverbs_ex_modify_wq(struct ib_uverbs_file *file,
3054 struct ib_device *ib_dev,
3055 struct ib_udata *ucore,
3056 struct ib_udata *uhw)
3057 {
3058 struct ib_uverbs_ex_modify_wq cmd = {};
3059 struct ib_wq *wq;
3060 struct ib_wq_attr wq_attr = {};
3061 size_t required_cmd_sz;
3062 int ret;
3063
3064 required_cmd_sz = offsetof(typeof(cmd), curr_wq_state) + sizeof(cmd.curr_wq_state);
3065 if (ucore->inlen < required_cmd_sz)
3066 return -EINVAL;
3067
3068 if (ucore->inlen > sizeof(cmd) &&
3069 !ib_is_udata_cleared(ucore, sizeof(cmd),
3070 ucore->inlen - sizeof(cmd)))
3071 return -EOPNOTSUPP;
3072
3073 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3074 if (ret)
3075 return ret;
3076
3077 if (!cmd.attr_mask)
3078 return -EINVAL;
3079
3080 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3081 return -EINVAL;
3082
3083 wq = uobj_get_obj_read(wq, cmd.wq_handle, file->ucontext);
3084 if (!wq)
3085 return -EINVAL;
3086
3087 wq_attr.curr_wq_state = cmd.curr_wq_state;
3088 wq_attr.wq_state = cmd.wq_state;
3089 if (cmd.attr_mask & IB_WQ_FLAGS) {
3090 wq_attr.flags = cmd.flags;
3091 wq_attr.flags_mask = cmd.flags_mask;
3092 }
3093 ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, uhw);
3094 uobj_put_obj_read(wq);
3095 return ret;
3096 }
3097
3098 int ib_uverbs_ex_create_rwq_ind_table(struct ib_uverbs_file *file,
3099 struct ib_device *ib_dev,
3100 struct ib_udata *ucore,
3101 struct ib_udata *uhw)
3102 {
3103 struct ib_uverbs_ex_create_rwq_ind_table cmd = {};
3104 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3105 struct ib_uobject *uobj;
3106 int err = 0;
3107 struct ib_rwq_ind_table_init_attr init_attr = {};
3108 struct ib_rwq_ind_table *rwq_ind_tbl;
3109 struct ib_wq **wqs = NULL;
3110 u32 *wqs_handles = NULL;
3111 struct ib_wq *wq = NULL;
3112 int i, j, num_read_wqs;
3113 u32 num_wq_handles;
3114 u32 expected_in_size;
3115 size_t required_cmd_sz_header;
3116 size_t required_resp_len;
3117
3118 required_cmd_sz_header = offsetof(typeof(cmd), log_ind_tbl_size) + sizeof(cmd.log_ind_tbl_size);
3119 required_resp_len = offsetof(typeof(resp), ind_tbl_num) + sizeof(resp.ind_tbl_num);
3120
3121 if (ucore->inlen < required_cmd_sz_header)
3122 return -EINVAL;
3123
3124 if (ucore->outlen < required_resp_len)
3125 return -ENOSPC;
3126
3127 err = ib_copy_from_udata(&cmd, ucore, required_cmd_sz_header);
3128 if (err)
3129 return err;
3130
3131 ucore->inbuf += required_cmd_sz_header;
3132 ucore->inlen -= required_cmd_sz_header;
3133
3134 if (cmd.comp_mask)
3135 return -EOPNOTSUPP;
3136
3137 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3138 return -EINVAL;
3139
3140 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3141 expected_in_size = num_wq_handles * sizeof(__u32);
3142 if (num_wq_handles == 1)
3143 /* input size for wq handles is u64 aligned */
3144 expected_in_size += sizeof(__u32);
3145
3146 if (ucore->inlen < expected_in_size)
3147 return -EINVAL;
3148
3149 if (ucore->inlen > expected_in_size &&
3150 !ib_is_udata_cleared(ucore, expected_in_size,
3151 ucore->inlen - expected_in_size))
3152 return -EOPNOTSUPP;
3153
3154 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3155 GFP_KERNEL);
3156 if (!wqs_handles)
3157 return -ENOMEM;
3158
3159 err = ib_copy_from_udata(wqs_handles, ucore,
3160 num_wq_handles * sizeof(__u32));
3161 if (err)
3162 goto err_free;
3163
3164 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3165 if (!wqs) {
3166 err = -ENOMEM;
3167 goto err_free;
3168 }
3169
3170 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3171 num_read_wqs++) {
3172 wq = uobj_get_obj_read(wq, wqs_handles[num_read_wqs],
3173 file->ucontext);
3174 if (!wq) {
3175 err = -EINVAL;
3176 goto put_wqs;
3177 }
3178
3179 wqs[num_read_wqs] = wq;
3180 }
3181
3182 uobj = uobj_alloc(uobj_get_type(rwq_ind_table), file->ucontext);
3183 if (IS_ERR(uobj)) {
3184 err = PTR_ERR(uobj);
3185 goto put_wqs;
3186 }
3187
3188 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3189 init_attr.ind_tbl = wqs;
3190 rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, uhw);
3191
3192 if (IS_ERR(rwq_ind_tbl)) {
3193 err = PTR_ERR(rwq_ind_tbl);
3194 goto err_uobj;
3195 }
3196
3197 rwq_ind_tbl->ind_tbl = wqs;
3198 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3199 rwq_ind_tbl->uobject = uobj;
3200 uobj->object = rwq_ind_tbl;
3201 rwq_ind_tbl->device = ib_dev;
3202 atomic_set(&rwq_ind_tbl->usecnt, 0);
3203
3204 for (i = 0; i < num_wq_handles; i++)
3205 atomic_inc(&wqs[i]->usecnt);
3206
3207 resp.ind_tbl_handle = uobj->id;
3208 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3209 resp.response_length = required_resp_len;
3210
3211 err = ib_copy_to_udata(ucore,
3212 &resp, resp.response_length);
3213 if (err)
3214 goto err_copy;
3215
3216 kfree(wqs_handles);
3217
3218 for (j = 0; j < num_read_wqs; j++)
3219 uobj_put_obj_read(wqs[j]);
3220
3221 uobj_alloc_commit(uobj);
3222 return 0;
3223
3224 err_copy:
3225 ib_destroy_rwq_ind_table(rwq_ind_tbl);
3226 err_uobj:
3227 uobj_alloc_abort(uobj);
3228 put_wqs:
3229 for (j = 0; j < num_read_wqs; j++)
3230 uobj_put_obj_read(wqs[j]);
3231 err_free:
3232 kfree(wqs_handles);
3233 kfree(wqs);
3234 return err;
3235 }
3236
3237 int ib_uverbs_ex_destroy_rwq_ind_table(struct ib_uverbs_file *file,
3238 struct ib_device *ib_dev,
3239 struct ib_udata *ucore,
3240 struct ib_udata *uhw)
3241 {
3242 struct ib_uverbs_ex_destroy_rwq_ind_table cmd = {};
3243 struct ib_uobject *uobj;
3244 int ret;
3245 size_t required_cmd_sz;
3246
3247 required_cmd_sz = offsetof(typeof(cmd), ind_tbl_handle) + sizeof(cmd.ind_tbl_handle);
3248
3249 if (ucore->inlen < required_cmd_sz)
3250 return -EINVAL;
3251
3252 if (ucore->inlen > sizeof(cmd) &&
3253 !ib_is_udata_cleared(ucore, sizeof(cmd),
3254 ucore->inlen - sizeof(cmd)))
3255 return -EOPNOTSUPP;
3256
3257 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3258 if (ret)
3259 return ret;
3260
3261 if (cmd.comp_mask)
3262 return -EOPNOTSUPP;
3263
3264 uobj = uobj_get_write(uobj_get_type(rwq_ind_table), cmd.ind_tbl_handle,
3265 file->ucontext);
3266 if (IS_ERR(uobj))
3267 return PTR_ERR(uobj);
3268
3269 return uobj_remove_commit(uobj);
3270 }
3271
3272 int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
3273 struct ib_device *ib_dev,
3274 struct ib_udata *ucore,
3275 struct ib_udata *uhw)
3276 {
3277 struct ib_uverbs_create_flow cmd;
3278 struct ib_uverbs_create_flow_resp resp;
3279 struct ib_uobject *uobj;
3280 struct ib_flow *flow_id;
3281 struct ib_uverbs_flow_attr *kern_flow_attr;
3282 struct ib_flow_attr *flow_attr;
3283 struct ib_qp *qp;
3284 int err = 0;
3285 void *kern_spec;
3286 void *ib_spec;
3287 int i;
3288
3289 if (ucore->inlen < sizeof(cmd))
3290 return -EINVAL;
3291
3292 if (ucore->outlen < sizeof(resp))
3293 return -ENOSPC;
3294
3295 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3296 if (err)
3297 return err;
3298
3299 ucore->inbuf += sizeof(cmd);
3300 ucore->inlen -= sizeof(cmd);
3301
3302 if (cmd.comp_mask)
3303 return -EINVAL;
3304
3305 if (!capable(CAP_NET_RAW))
3306 return -EPERM;
3307
3308 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3309 return -EINVAL;
3310
3311 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3312 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3313 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3314 return -EINVAL;
3315
3316 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3317 return -EINVAL;
3318
3319 if (cmd.flow_attr.size > ucore->inlen ||
3320 cmd.flow_attr.size >
3321 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3322 return -EINVAL;
3323
3324 if (cmd.flow_attr.reserved[0] ||
3325 cmd.flow_attr.reserved[1])
3326 return -EINVAL;
3327
3328 if (cmd.flow_attr.num_of_specs) {
3329 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3330 GFP_KERNEL);
3331 if (!kern_flow_attr)
3332 return -ENOMEM;
3333
3334 memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr));
3335 err = ib_copy_from_udata(kern_flow_attr + 1, ucore,
3336 cmd.flow_attr.size);
3337 if (err)
3338 goto err_free_attr;
3339 } else {
3340 kern_flow_attr = &cmd.flow_attr;
3341 }
3342
3343 uobj = uobj_alloc(uobj_get_type(flow), file->ucontext);
3344 if (IS_ERR(uobj)) {
3345 err = PTR_ERR(uobj);
3346 goto err_free_attr;
3347 }
3348
3349 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
3350 if (!qp) {
3351 err = -EINVAL;
3352 goto err_uobj;
3353 }
3354
3355 flow_attr = kzalloc(sizeof(*flow_attr) + cmd.flow_attr.num_of_specs *
3356 sizeof(union ib_flow_spec), GFP_KERNEL);
3357 if (!flow_attr) {
3358 err = -ENOMEM;
3359 goto err_put;
3360 }
3361
3362 flow_attr->type = kern_flow_attr->type;
3363 flow_attr->priority = kern_flow_attr->priority;
3364 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3365 flow_attr->port = kern_flow_attr->port;
3366 flow_attr->flags = kern_flow_attr->flags;
3367 flow_attr->size = sizeof(*flow_attr);
3368
3369 kern_spec = kern_flow_attr + 1;
3370 ib_spec = flow_attr + 1;
3371 for (i = 0; i < flow_attr->num_of_specs &&
3372 cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) &&
3373 cmd.flow_attr.size >=
3374 ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) {
3375 err = kern_spec_to_ib_spec(kern_spec, ib_spec);
3376 if (err)
3377 goto err_free;
3378 flow_attr->size +=
3379 ((union ib_flow_spec *) ib_spec)->size;
3380 cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size;
3381 kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size;
3382 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3383 }
3384 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3385 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
3386 i, cmd.flow_attr.size);
3387 err = -EINVAL;
3388 goto err_free;
3389 }
3390 flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER);
3391 if (IS_ERR(flow_id)) {
3392 err = PTR_ERR(flow_id);
3393 goto err_free;
3394 }
3395 flow_id->uobject = uobj;
3396 uobj->object = flow_id;
3397
3398 memset(&resp, 0, sizeof(resp));
3399 resp.flow_handle = uobj->id;
3400
3401 err = ib_copy_to_udata(ucore,
3402 &resp, sizeof(resp));
3403 if (err)
3404 goto err_copy;
3405
3406 uobj_put_obj_read(qp);
3407 uobj_alloc_commit(uobj);
3408 kfree(flow_attr);
3409 if (cmd.flow_attr.num_of_specs)
3410 kfree(kern_flow_attr);
3411 return 0;
3412 err_copy:
3413 ib_destroy_flow(flow_id);
3414 err_free:
3415 kfree(flow_attr);
3416 err_put:
3417 uobj_put_obj_read(qp);
3418 err_uobj:
3419 uobj_alloc_abort(uobj);
3420 err_free_attr:
3421 if (cmd.flow_attr.num_of_specs)
3422 kfree(kern_flow_attr);
3423 return err;
3424 }
3425
3426 int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file,
3427 struct ib_device *ib_dev,
3428 struct ib_udata *ucore,
3429 struct ib_udata *uhw)
3430 {
3431 struct ib_uverbs_destroy_flow cmd;
3432 struct ib_uobject *uobj;
3433 int ret;
3434
3435 if (ucore->inlen < sizeof(cmd))
3436 return -EINVAL;
3437
3438 ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3439 if (ret)
3440 return ret;
3441
3442 if (cmd.comp_mask)
3443 return -EINVAL;
3444
3445 uobj = uobj_get_write(uobj_get_type(flow), cmd.flow_handle,
3446 file->ucontext);
3447 if (IS_ERR(uobj))
3448 return PTR_ERR(uobj);
3449
3450 ret = uobj_remove_commit(uobj);
3451 return ret;
3452 }
3453
3454 static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
3455 struct ib_device *ib_dev,
3456 struct ib_uverbs_create_xsrq *cmd,
3457 struct ib_udata *udata)
3458 {
3459 struct ib_uverbs_create_srq_resp resp;
3460 struct ib_usrq_object *obj;
3461 struct ib_pd *pd;
3462 struct ib_srq *srq;
3463 struct ib_uobject *uninitialized_var(xrcd_uobj);
3464 struct ib_srq_init_attr attr;
3465 int ret;
3466
3467 obj = (struct ib_usrq_object *)uobj_alloc(uobj_get_type(srq),
3468 file->ucontext);
3469 if (IS_ERR(obj))
3470 return PTR_ERR(obj);
3471
3472 if (cmd->srq_type == IB_SRQT_XRC) {
3473 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->xrcd_handle,
3474 file->ucontext);
3475 if (IS_ERR(xrcd_uobj)) {
3476 ret = -EINVAL;
3477 goto err;
3478 }
3479
3480 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3481 if (!attr.ext.xrc.xrcd) {
3482 ret = -EINVAL;
3483 goto err_put_xrcd;
3484 }
3485
3486 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3487 atomic_inc(&obj->uxrcd->refcnt);
3488
3489 attr.ext.xrc.cq = uobj_get_obj_read(cq, cmd->cq_handle,
3490 file->ucontext);
3491 if (!attr.ext.xrc.cq) {
3492 ret = -EINVAL;
3493 goto err_put_xrcd;
3494 }
3495 }
3496
3497 pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext);
3498 if (!pd) {
3499 ret = -EINVAL;
3500 goto err_put_cq;
3501 }
3502
3503 attr.event_handler = ib_uverbs_srq_event_handler;
3504 attr.srq_context = file;
3505 attr.srq_type = cmd->srq_type;
3506 attr.attr.max_wr = cmd->max_wr;
3507 attr.attr.max_sge = cmd->max_sge;
3508 attr.attr.srq_limit = cmd->srq_limit;
3509
3510 obj->uevent.events_reported = 0;
3511 INIT_LIST_HEAD(&obj->uevent.event_list);
3512
3513 srq = pd->device->create_srq(pd, &attr, udata);
3514 if (IS_ERR(srq)) {
3515 ret = PTR_ERR(srq);
3516 goto err_put;
3517 }
3518
3519 srq->device = pd->device;
3520 srq->pd = pd;
3521 srq->srq_type = cmd->srq_type;
3522 srq->uobject = &obj->uevent.uobject;
3523 srq->event_handler = attr.event_handler;
3524 srq->srq_context = attr.srq_context;
3525
3526 if (cmd->srq_type == IB_SRQT_XRC) {
3527 srq->ext.xrc.cq = attr.ext.xrc.cq;
3528 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
3529 atomic_inc(&attr.ext.xrc.cq->usecnt);
3530 atomic_inc(&attr.ext.xrc.xrcd->usecnt);
3531 }
3532
3533 atomic_inc(&pd->usecnt);
3534 atomic_set(&srq->usecnt, 0);
3535
3536 obj->uevent.uobject.object = srq;
3537 obj->uevent.uobject.user_handle = cmd->user_handle;
3538
3539 memset(&resp, 0, sizeof resp);
3540 resp.srq_handle = obj->uevent.uobject.id;
3541 resp.max_wr = attr.attr.max_wr;
3542 resp.max_sge = attr.attr.max_sge;
3543 if (cmd->srq_type == IB_SRQT_XRC)
3544 resp.srqn = srq->ext.xrc.srq_num;
3545
3546 if (copy_to_user((void __user *) (unsigned long) cmd->response,
3547 &resp, sizeof resp)) {
3548 ret = -EFAULT;
3549 goto err_copy;
3550 }
3551
3552 if (cmd->srq_type == IB_SRQT_XRC) {
3553 uobj_put_read(xrcd_uobj);
3554 uobj_put_obj_read(attr.ext.xrc.cq);
3555 }
3556 uobj_put_obj_read(pd);
3557 uobj_alloc_commit(&obj->uevent.uobject);
3558
3559 return 0;
3560
3561 err_copy:
3562 ib_destroy_srq(srq);
3563
3564 err_put:
3565 uobj_put_obj_read(pd);
3566
3567 err_put_cq:
3568 if (cmd->srq_type == IB_SRQT_XRC)
3569 uobj_put_obj_read(attr.ext.xrc.cq);
3570
3571 err_put_xrcd:
3572 if (cmd->srq_type == IB_SRQT_XRC) {
3573 atomic_dec(&obj->uxrcd->refcnt);
3574 uobj_put_read(xrcd_uobj);
3575 }
3576
3577 err:
3578 uobj_alloc_abort(&obj->uevent.uobject);
3579 return ret;
3580 }
3581
3582 ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
3583 struct ib_device *ib_dev,
3584 const char __user *buf, int in_len,
3585 int out_len)
3586 {
3587 struct ib_uverbs_create_srq cmd;
3588 struct ib_uverbs_create_xsrq xcmd;
3589 struct ib_uverbs_create_srq_resp resp;
3590 struct ib_udata udata;
3591 int ret;
3592
3593 if (out_len < sizeof resp)
3594 return -ENOSPC;
3595
3596 if (copy_from_user(&cmd, buf, sizeof cmd))
3597 return -EFAULT;
3598
3599 xcmd.response = cmd.response;
3600 xcmd.user_handle = cmd.user_handle;
3601 xcmd.srq_type = IB_SRQT_BASIC;
3602 xcmd.pd_handle = cmd.pd_handle;
3603 xcmd.max_wr = cmd.max_wr;
3604 xcmd.max_sge = cmd.max_sge;
3605 xcmd.srq_limit = cmd.srq_limit;
3606
3607 INIT_UDATA(&udata, buf + sizeof cmd,
3608 (unsigned long) cmd.response + sizeof resp,
3609 in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr),
3610 out_len - sizeof resp);
3611
3612 ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata);
3613 if (ret)
3614 return ret;
3615
3616 return in_len;
3617 }
3618
3619 ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file,
3620 struct ib_device *ib_dev,
3621 const char __user *buf, int in_len, int out_len)
3622 {
3623 struct ib_uverbs_create_xsrq cmd;
3624 struct ib_uverbs_create_srq_resp resp;
3625 struct ib_udata udata;
3626 int ret;
3627
3628 if (out_len < sizeof resp)
3629 return -ENOSPC;
3630
3631 if (copy_from_user(&cmd, buf, sizeof cmd))
3632 return -EFAULT;
3633
3634 INIT_UDATA(&udata, buf + sizeof cmd,
3635 (unsigned long) cmd.response + sizeof resp,
3636 in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr),
3637 out_len - sizeof resp);
3638
3639 ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata);
3640 if (ret)
3641 return ret;
3642
3643 return in_len;
3644 }
3645
3646 ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
3647 struct ib_device *ib_dev,
3648 const char __user *buf, int in_len,
3649 int out_len)
3650 {
3651 struct ib_uverbs_modify_srq cmd;
3652 struct ib_udata udata;
3653 struct ib_srq *srq;
3654 struct ib_srq_attr attr;
3655 int ret;
3656
3657 if (copy_from_user(&cmd, buf, sizeof cmd))
3658 return -EFAULT;
3659
3660 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
3661 out_len);
3662
3663 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext);
3664 if (!srq)
3665 return -EINVAL;
3666
3667 attr.max_wr = cmd.max_wr;
3668 attr.srq_limit = cmd.srq_limit;
3669
3670 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata);
3671
3672 uobj_put_obj_read(srq);
3673
3674 return ret ? ret : in_len;
3675 }
3676
3677 ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
3678 struct ib_device *ib_dev,
3679 const char __user *buf,
3680 int in_len, int out_len)
3681 {
3682 struct ib_uverbs_query_srq cmd;
3683 struct ib_uverbs_query_srq_resp resp;
3684 struct ib_srq_attr attr;
3685 struct ib_srq *srq;
3686 int ret;
3687
3688 if (out_len < sizeof resp)
3689 return -ENOSPC;
3690
3691 if (copy_from_user(&cmd, buf, sizeof cmd))
3692 return -EFAULT;
3693
3694 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext);
3695 if (!srq)
3696 return -EINVAL;
3697
3698 ret = ib_query_srq(srq, &attr);
3699
3700 uobj_put_obj_read(srq);
3701
3702 if (ret)
3703 return ret;
3704
3705 memset(&resp, 0, sizeof resp);
3706
3707 resp.max_wr = attr.max_wr;
3708 resp.max_sge = attr.max_sge;
3709 resp.srq_limit = attr.srq_limit;
3710
3711 if (copy_to_user((void __user *) (unsigned long) cmd.response,
3712 &resp, sizeof resp))
3713 return -EFAULT;
3714
3715 return in_len;
3716 }
3717
3718 ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
3719 struct ib_device *ib_dev,
3720 const char __user *buf, int in_len,
3721 int out_len)
3722 {
3723 struct ib_uverbs_destroy_srq cmd;
3724 struct ib_uverbs_destroy_srq_resp resp;
3725 struct ib_uobject *uobj;
3726 struct ib_uevent_object *obj;
3727 int ret = -EINVAL;
3728
3729 if (copy_from_user(&cmd, buf, sizeof cmd))
3730 return -EFAULT;
3731
3732 uobj = uobj_get_write(uobj_get_type(srq), cmd.srq_handle,
3733 file->ucontext);
3734 if (IS_ERR(uobj))
3735 return PTR_ERR(uobj);
3736
3737 obj = container_of(uobj, struct ib_uevent_object, uobject);
3738 /*
3739 * Make sure we don't free the memory in remove_commit as we still
3740 * needs the uobject memory to create the response.
3741 */
3742 uverbs_uobject_get(uobj);
3743
3744 memset(&resp, 0, sizeof(resp));
3745
3746 ret = uobj_remove_commit(uobj);
3747 if (ret) {
3748 uverbs_uobject_put(uobj);
3749 return ret;
3750 }
3751 resp.events_reported = obj->events_reported;
3752 uverbs_uobject_put(uobj);
3753 if (copy_to_user((void __user *)(unsigned long)cmd.response,
3754 &resp, sizeof(resp)))
3755 return -EFAULT;
3756
3757 return in_len;
3758 }
3759
3760 int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
3761 struct ib_device *ib_dev,
3762 struct ib_udata *ucore,
3763 struct ib_udata *uhw)
3764 {
3765 struct ib_uverbs_ex_query_device_resp resp = { {0} };
3766 struct ib_uverbs_ex_query_device cmd;
3767 struct ib_device_attr attr = {0};
3768 int err;
3769
3770 if (ucore->inlen < sizeof(cmd))
3771 return -EINVAL;
3772
3773 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3774 if (err)
3775 return err;
3776
3777 if (cmd.comp_mask)
3778 return -EINVAL;
3779
3780 if (cmd.reserved)
3781 return -EINVAL;
3782
3783 resp.response_length = offsetof(typeof(resp), odp_caps);
3784
3785 if (ucore->outlen < resp.response_length)
3786 return -ENOSPC;
3787
3788 err = ib_dev->query_device(ib_dev, &attr, uhw);
3789 if (err)
3790 return err;
3791
3792 copy_query_dev_fields(file, ib_dev, &resp.base, &attr);
3793
3794 if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps))
3795 goto end;
3796
3797 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
3798 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3799 resp.odp_caps.per_transport_caps.rc_odp_caps =
3800 attr.odp_caps.per_transport_caps.rc_odp_caps;
3801 resp.odp_caps.per_transport_caps.uc_odp_caps =
3802 attr.odp_caps.per_transport_caps.uc_odp_caps;
3803 resp.odp_caps.per_transport_caps.ud_odp_caps =
3804 attr.odp_caps.per_transport_caps.ud_odp_caps;
3805 #endif
3806 resp.response_length += sizeof(resp.odp_caps);
3807
3808 if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask))
3809 goto end;
3810
3811 resp.timestamp_mask = attr.timestamp_mask;
3812 resp.response_length += sizeof(resp.timestamp_mask);
3813
3814 if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock))
3815 goto end;
3816
3817 resp.hca_core_clock = attr.hca_core_clock;
3818 resp.response_length += sizeof(resp.hca_core_clock);
3819
3820 if (ucore->outlen < resp.response_length + sizeof(resp.device_cap_flags_ex))
3821 goto end;
3822
3823 resp.device_cap_flags_ex = attr.device_cap_flags;
3824 resp.response_length += sizeof(resp.device_cap_flags_ex);
3825
3826 if (ucore->outlen < resp.response_length + sizeof(resp.rss_caps))
3827 goto end;
3828
3829 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3830 resp.rss_caps.max_rwq_indirection_tables =
3831 attr.rss_caps.max_rwq_indirection_tables;
3832 resp.rss_caps.max_rwq_indirection_table_size =
3833 attr.rss_caps.max_rwq_indirection_table_size;
3834
3835 resp.response_length += sizeof(resp.rss_caps);
3836
3837 if (ucore->outlen < resp.response_length + sizeof(resp.max_wq_type_rq))
3838 goto end;
3839
3840 resp.max_wq_type_rq = attr.max_wq_type_rq;
3841 resp.response_length += sizeof(resp.max_wq_type_rq);
3842
3843 if (ucore->outlen < resp.response_length + sizeof(resp.raw_packet_caps))
3844 goto end;
3845
3846 resp.raw_packet_caps = attr.raw_packet_caps;
3847 resp.response_length += sizeof(resp.raw_packet_caps);
3848 end:
3849 err = ib_copy_to_udata(ucore, &resp, resp.response_length);
3850 return err;
3851 }
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