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[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 struct ib_uverbs_event_queue *ev_queue;
1300 int ret = -EINVAL;
1301
1302 if (copy_from_user(&cmd, buf, sizeof cmd))
1303 return -EFAULT;
1304
1305 uobj = uobj_get_write(uobj_get_type(cq), cmd.cq_handle,
1306 file->ucontext);
1307 if (IS_ERR(uobj))
1308 return PTR_ERR(uobj);
1309
1310 /*
1311 * Make sure we don't free the memory in remove_commit as we still
1312 * needs the uobject memory to create the response.
1313 */
1314 uverbs_uobject_get(uobj);
1315 cq = uobj->object;
1316 ev_queue = cq->cq_context;
1317 obj = container_of(cq->uobject, struct ib_ucq_object, uobject);
1318
1319 memset(&resp, 0, sizeof(resp));
1320
1321 ret = uobj_remove_commit(uobj);
1322 if (ret) {
1323 uverbs_uobject_put(uobj);
1324 return ret;
1325 }
1326
1327 resp.comp_events_reported = obj->comp_events_reported;
1328 resp.async_events_reported = obj->async_events_reported;
1329
1330 uverbs_uobject_put(uobj);
1331 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1332 &resp, sizeof resp))
1333 return -EFAULT;
1334
1335 return in_len;
1336 }
1337
1338 static int create_qp(struct ib_uverbs_file *file,
1339 struct ib_udata *ucore,
1340 struct ib_udata *uhw,
1341 struct ib_uverbs_ex_create_qp *cmd,
1342 size_t cmd_sz,
1343 int (*cb)(struct ib_uverbs_file *file,
1344 struct ib_uverbs_ex_create_qp_resp *resp,
1345 struct ib_udata *udata),
1346 void *context)
1347 {
1348 struct ib_uqp_object *obj;
1349 struct ib_device *device;
1350 struct ib_pd *pd = NULL;
1351 struct ib_xrcd *xrcd = NULL;
1352 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT);
1353 struct ib_cq *scq = NULL, *rcq = NULL;
1354 struct ib_srq *srq = NULL;
1355 struct ib_qp *qp;
1356 char *buf;
1357 struct ib_qp_init_attr attr = {};
1358 struct ib_uverbs_ex_create_qp_resp resp;
1359 int ret;
1360 struct ib_rwq_ind_table *ind_tbl = NULL;
1361 bool has_sq = true;
1362
1363 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
1364 return -EPERM;
1365
1366 obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp),
1367 file->ucontext);
1368 if (IS_ERR(obj))
1369 return PTR_ERR(obj);
1370 obj->uxrcd = NULL;
1371 obj->uevent.uobject.user_handle = cmd->user_handle;
1372 mutex_init(&obj->mcast_lock);
1373
1374 if (cmd_sz >= offsetof(typeof(*cmd), rwq_ind_tbl_handle) +
1375 sizeof(cmd->rwq_ind_tbl_handle) &&
1376 (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE)) {
1377 ind_tbl = uobj_get_obj_read(rwq_ind_table,
1378 cmd->rwq_ind_tbl_handle,
1379 file->ucontext);
1380 if (!ind_tbl) {
1381 ret = -EINVAL;
1382 goto err_put;
1383 }
1384
1385 attr.rwq_ind_tbl = ind_tbl;
1386 }
1387
1388 if ((cmd_sz >= offsetof(typeof(*cmd), reserved1) +
1389 sizeof(cmd->reserved1)) && cmd->reserved1) {
1390 ret = -EOPNOTSUPP;
1391 goto err_put;
1392 }
1393
1394 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1395 ret = -EINVAL;
1396 goto err_put;
1397 }
1398
1399 if (ind_tbl && !cmd->max_send_wr)
1400 has_sq = false;
1401
1402 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1403 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->pd_handle,
1404 file->ucontext);
1405
1406 if (IS_ERR(xrcd_uobj)) {
1407 ret = -EINVAL;
1408 goto err_put;
1409 }
1410
1411 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1412 if (!xrcd) {
1413 ret = -EINVAL;
1414 goto err_put;
1415 }
1416 device = xrcd->device;
1417 } else {
1418 if (cmd->qp_type == IB_QPT_XRC_INI) {
1419 cmd->max_recv_wr = 0;
1420 cmd->max_recv_sge = 0;
1421 } else {
1422 if (cmd->is_srq) {
1423 srq = uobj_get_obj_read(srq, cmd->srq_handle,
1424 file->ucontext);
1425 if (!srq || srq->srq_type != IB_SRQT_BASIC) {
1426 ret = -EINVAL;
1427 goto err_put;
1428 }
1429 }
1430
1431 if (!ind_tbl) {
1432 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1433 rcq = uobj_get_obj_read(cq, cmd->recv_cq_handle,
1434 file->ucontext);
1435 if (!rcq) {
1436 ret = -EINVAL;
1437 goto err_put;
1438 }
1439 }
1440 }
1441 }
1442
1443 if (has_sq)
1444 scq = uobj_get_obj_read(cq, cmd->send_cq_handle,
1445 file->ucontext);
1446 if (!ind_tbl)
1447 rcq = rcq ?: scq;
1448 pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext);
1449 if (!pd || (!scq && has_sq)) {
1450 ret = -EINVAL;
1451 goto err_put;
1452 }
1453
1454 device = pd->device;
1455 }
1456
1457 attr.event_handler = ib_uverbs_qp_event_handler;
1458 attr.qp_context = file;
1459 attr.send_cq = scq;
1460 attr.recv_cq = rcq;
1461 attr.srq = srq;
1462 attr.xrcd = xrcd;
1463 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1464 IB_SIGNAL_REQ_WR;
1465 attr.qp_type = cmd->qp_type;
1466 attr.create_flags = 0;
1467
1468 attr.cap.max_send_wr = cmd->max_send_wr;
1469 attr.cap.max_recv_wr = cmd->max_recv_wr;
1470 attr.cap.max_send_sge = cmd->max_send_sge;
1471 attr.cap.max_recv_sge = cmd->max_recv_sge;
1472 attr.cap.max_inline_data = cmd->max_inline_data;
1473
1474 obj->uevent.events_reported = 0;
1475 INIT_LIST_HEAD(&obj->uevent.event_list);
1476 INIT_LIST_HEAD(&obj->mcast_list);
1477
1478 if (cmd_sz >= offsetof(typeof(*cmd), create_flags) +
1479 sizeof(cmd->create_flags))
1480 attr.create_flags = cmd->create_flags;
1481
1482 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1483 IB_QP_CREATE_CROSS_CHANNEL |
1484 IB_QP_CREATE_MANAGED_SEND |
1485 IB_QP_CREATE_MANAGED_RECV |
1486 IB_QP_CREATE_SCATTER_FCS |
1487 IB_QP_CREATE_CVLAN_STRIPPING)) {
1488 ret = -EINVAL;
1489 goto err_put;
1490 }
1491
1492 buf = (void *)cmd + sizeof(*cmd);
1493 if (cmd_sz > sizeof(*cmd))
1494 if (!(buf[0] == 0 && !memcmp(buf, buf + 1,
1495 cmd_sz - sizeof(*cmd) - 1))) {
1496 ret = -EINVAL;
1497 goto err_put;
1498 }
1499
1500 if (cmd->qp_type == IB_QPT_XRC_TGT)
1501 qp = ib_create_qp(pd, &attr);
1502 else
1503 qp = device->create_qp(pd, &attr, uhw);
1504
1505 if (IS_ERR(qp)) {
1506 ret = PTR_ERR(qp);
1507 goto err_put;
1508 }
1509
1510 if (cmd->qp_type != IB_QPT_XRC_TGT) {
1511 ret = ib_create_qp_security(qp, device);
1512 if (ret)
1513 goto err_cb;
1514
1515 qp->real_qp = qp;
1516 qp->device = device;
1517 qp->pd = pd;
1518 qp->send_cq = attr.send_cq;
1519 qp->recv_cq = attr.recv_cq;
1520 qp->srq = attr.srq;
1521 qp->rwq_ind_tbl = ind_tbl;
1522 qp->event_handler = attr.event_handler;
1523 qp->qp_context = attr.qp_context;
1524 qp->qp_type = attr.qp_type;
1525 atomic_set(&qp->usecnt, 0);
1526 atomic_inc(&pd->usecnt);
1527 if (attr.send_cq)
1528 atomic_inc(&attr.send_cq->usecnt);
1529 if (attr.recv_cq)
1530 atomic_inc(&attr.recv_cq->usecnt);
1531 if (attr.srq)
1532 atomic_inc(&attr.srq->usecnt);
1533 if (ind_tbl)
1534 atomic_inc(&ind_tbl->usecnt);
1535 }
1536 qp->uobject = &obj->uevent.uobject;
1537
1538 obj->uevent.uobject.object = qp;
1539
1540 memset(&resp, 0, sizeof resp);
1541 resp.base.qpn = qp->qp_num;
1542 resp.base.qp_handle = obj->uevent.uobject.id;
1543 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1544 resp.base.max_send_sge = attr.cap.max_send_sge;
1545 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1546 resp.base.max_send_wr = attr.cap.max_send_wr;
1547 resp.base.max_inline_data = attr.cap.max_inline_data;
1548
1549 resp.response_length = offsetof(typeof(resp), response_length) +
1550 sizeof(resp.response_length);
1551
1552 ret = cb(file, &resp, ucore);
1553 if (ret)
1554 goto err_cb;
1555
1556 if (xrcd) {
1557 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1558 uobject);
1559 atomic_inc(&obj->uxrcd->refcnt);
1560 uobj_put_read(xrcd_uobj);
1561 }
1562
1563 if (pd)
1564 uobj_put_obj_read(pd);
1565 if (scq)
1566 uobj_put_obj_read(scq);
1567 if (rcq && rcq != scq)
1568 uobj_put_obj_read(rcq);
1569 if (srq)
1570 uobj_put_obj_read(srq);
1571 if (ind_tbl)
1572 uobj_put_obj_read(ind_tbl);
1573
1574 uobj_alloc_commit(&obj->uevent.uobject);
1575
1576 return 0;
1577 err_cb:
1578 ib_destroy_qp(qp);
1579
1580 err_put:
1581 if (!IS_ERR(xrcd_uobj))
1582 uobj_put_read(xrcd_uobj);
1583 if (pd)
1584 uobj_put_obj_read(pd);
1585 if (scq)
1586 uobj_put_obj_read(scq);
1587 if (rcq && rcq != scq)
1588 uobj_put_obj_read(rcq);
1589 if (srq)
1590 uobj_put_obj_read(srq);
1591 if (ind_tbl)
1592 uobj_put_obj_read(ind_tbl);
1593
1594 uobj_alloc_abort(&obj->uevent.uobject);
1595 return ret;
1596 }
1597
1598 static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file,
1599 struct ib_uverbs_ex_create_qp_resp *resp,
1600 struct ib_udata *ucore)
1601 {
1602 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1603 return -EFAULT;
1604
1605 return 0;
1606 }
1607
1608 ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
1609 struct ib_device *ib_dev,
1610 const char __user *buf, int in_len,
1611 int out_len)
1612 {
1613 struct ib_uverbs_create_qp cmd;
1614 struct ib_uverbs_ex_create_qp cmd_ex;
1615 struct ib_udata ucore;
1616 struct ib_udata uhw;
1617 ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp);
1618 int err;
1619
1620 if (out_len < resp_size)
1621 return -ENOSPC;
1622
1623 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1624 return -EFAULT;
1625
1626 INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd),
1627 resp_size);
1628 INIT_UDATA(&uhw, buf + sizeof(cmd),
1629 (unsigned long)cmd.response + resp_size,
1630 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
1631 out_len - resp_size);
1632
1633 memset(&cmd_ex, 0, sizeof(cmd_ex));
1634 cmd_ex.user_handle = cmd.user_handle;
1635 cmd_ex.pd_handle = cmd.pd_handle;
1636 cmd_ex.send_cq_handle = cmd.send_cq_handle;
1637 cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1638 cmd_ex.srq_handle = cmd.srq_handle;
1639 cmd_ex.max_send_wr = cmd.max_send_wr;
1640 cmd_ex.max_recv_wr = cmd.max_recv_wr;
1641 cmd_ex.max_send_sge = cmd.max_send_sge;
1642 cmd_ex.max_recv_sge = cmd.max_recv_sge;
1643 cmd_ex.max_inline_data = cmd.max_inline_data;
1644 cmd_ex.sq_sig_all = cmd.sq_sig_all;
1645 cmd_ex.qp_type = cmd.qp_type;
1646 cmd_ex.is_srq = cmd.is_srq;
1647
1648 err = create_qp(file, &ucore, &uhw, &cmd_ex,
1649 offsetof(typeof(cmd_ex), is_srq) +
1650 sizeof(cmd.is_srq), ib_uverbs_create_qp_cb,
1651 NULL);
1652
1653 if (err)
1654 return err;
1655
1656 return in_len;
1657 }
1658
1659 static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file,
1660 struct ib_uverbs_ex_create_qp_resp *resp,
1661 struct ib_udata *ucore)
1662 {
1663 if (ib_copy_to_udata(ucore, resp, resp->response_length))
1664 return -EFAULT;
1665
1666 return 0;
1667 }
1668
1669 int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file,
1670 struct ib_device *ib_dev,
1671 struct ib_udata *ucore,
1672 struct ib_udata *uhw)
1673 {
1674 struct ib_uverbs_ex_create_qp_resp resp;
1675 struct ib_uverbs_ex_create_qp cmd = {0};
1676 int err;
1677
1678 if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) +
1679 sizeof(cmd.comp_mask)))
1680 return -EINVAL;
1681
1682 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
1683 if (err)
1684 return err;
1685
1686 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1687 return -EINVAL;
1688
1689 if (cmd.reserved)
1690 return -EINVAL;
1691
1692 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
1693 sizeof(resp.response_length)))
1694 return -ENOSPC;
1695
1696 err = create_qp(file, ucore, uhw, &cmd,
1697 min(ucore->inlen, sizeof(cmd)),
1698 ib_uverbs_ex_create_qp_cb, NULL);
1699
1700 if (err)
1701 return err;
1702
1703 return 0;
1704 }
1705
1706 ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file,
1707 struct ib_device *ib_dev,
1708 const char __user *buf, int in_len, int out_len)
1709 {
1710 struct ib_uverbs_open_qp cmd;
1711 struct ib_uverbs_create_qp_resp resp;
1712 struct ib_udata udata;
1713 struct ib_uqp_object *obj;
1714 struct ib_xrcd *xrcd;
1715 struct ib_uobject *uninitialized_var(xrcd_uobj);
1716 struct ib_qp *qp;
1717 struct ib_qp_open_attr attr;
1718 int ret;
1719
1720 if (out_len < sizeof resp)
1721 return -ENOSPC;
1722
1723 if (copy_from_user(&cmd, buf, sizeof cmd))
1724 return -EFAULT;
1725
1726 INIT_UDATA(&udata, buf + sizeof cmd,
1727 (unsigned long) cmd.response + sizeof resp,
1728 in_len - sizeof cmd, out_len - sizeof resp);
1729
1730 obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp),
1731 file->ucontext);
1732 if (IS_ERR(obj))
1733 return PTR_ERR(obj);
1734
1735 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd.pd_handle,
1736 file->ucontext);
1737 if (IS_ERR(xrcd_uobj)) {
1738 ret = -EINVAL;
1739 goto err_put;
1740 }
1741
1742 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1743 if (!xrcd) {
1744 ret = -EINVAL;
1745 goto err_xrcd;
1746 }
1747
1748 attr.event_handler = ib_uverbs_qp_event_handler;
1749 attr.qp_context = file;
1750 attr.qp_num = cmd.qpn;
1751 attr.qp_type = cmd.qp_type;
1752
1753 obj->uevent.events_reported = 0;
1754 INIT_LIST_HEAD(&obj->uevent.event_list);
1755 INIT_LIST_HEAD(&obj->mcast_list);
1756
1757 qp = ib_open_qp(xrcd, &attr);
1758 if (IS_ERR(qp)) {
1759 ret = PTR_ERR(qp);
1760 goto err_xrcd;
1761 }
1762
1763 obj->uevent.uobject.object = qp;
1764 obj->uevent.uobject.user_handle = cmd.user_handle;
1765
1766 memset(&resp, 0, sizeof resp);
1767 resp.qpn = qp->qp_num;
1768 resp.qp_handle = obj->uevent.uobject.id;
1769
1770 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1771 &resp, sizeof resp)) {
1772 ret = -EFAULT;
1773 goto err_destroy;
1774 }
1775
1776 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1777 atomic_inc(&obj->uxrcd->refcnt);
1778 qp->uobject = &obj->uevent.uobject;
1779 uobj_put_read(xrcd_uobj);
1780
1781
1782 uobj_alloc_commit(&obj->uevent.uobject);
1783
1784 return in_len;
1785
1786 err_destroy:
1787 ib_destroy_qp(qp);
1788 err_xrcd:
1789 uobj_put_read(xrcd_uobj);
1790 err_put:
1791 uobj_alloc_abort(&obj->uevent.uobject);
1792 return ret;
1793 }
1794
1795 ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
1796 struct ib_device *ib_dev,
1797 const char __user *buf, int in_len,
1798 int out_len)
1799 {
1800 struct ib_uverbs_query_qp cmd;
1801 struct ib_uverbs_query_qp_resp resp;
1802 struct ib_qp *qp;
1803 struct ib_qp_attr *attr;
1804 struct ib_qp_init_attr *init_attr;
1805 const struct ib_global_route *grh;
1806 int ret;
1807
1808 if (copy_from_user(&cmd, buf, sizeof cmd))
1809 return -EFAULT;
1810
1811 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1812 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1813 if (!attr || !init_attr) {
1814 ret = -ENOMEM;
1815 goto out;
1816 }
1817
1818 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
1819 if (!qp) {
1820 ret = -EINVAL;
1821 goto out;
1822 }
1823
1824 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1825
1826 uobj_put_obj_read(qp);
1827
1828 if (ret)
1829 goto out;
1830
1831 memset(&resp, 0, sizeof resp);
1832
1833 resp.qp_state = attr->qp_state;
1834 resp.cur_qp_state = attr->cur_qp_state;
1835 resp.path_mtu = attr->path_mtu;
1836 resp.path_mig_state = attr->path_mig_state;
1837 resp.qkey = attr->qkey;
1838 resp.rq_psn = attr->rq_psn;
1839 resp.sq_psn = attr->sq_psn;
1840 resp.dest_qp_num = attr->dest_qp_num;
1841 resp.qp_access_flags = attr->qp_access_flags;
1842 resp.pkey_index = attr->pkey_index;
1843 resp.alt_pkey_index = attr->alt_pkey_index;
1844 resp.sq_draining = attr->sq_draining;
1845 resp.max_rd_atomic = attr->max_rd_atomic;
1846 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1847 resp.min_rnr_timer = attr->min_rnr_timer;
1848 resp.port_num = attr->port_num;
1849 resp.timeout = attr->timeout;
1850 resp.retry_cnt = attr->retry_cnt;
1851 resp.rnr_retry = attr->rnr_retry;
1852 resp.alt_port_num = attr->alt_port_num;
1853 resp.alt_timeout = attr->alt_timeout;
1854
1855 resp.dest.dlid = rdma_ah_get_dlid(&attr->ah_attr);
1856 resp.dest.sl = rdma_ah_get_sl(&attr->ah_attr);
1857 resp.dest.src_path_bits = rdma_ah_get_path_bits(&attr->ah_attr);
1858 resp.dest.static_rate = rdma_ah_get_static_rate(&attr->ah_attr);
1859 resp.dest.is_global = !!(rdma_ah_get_ah_flags(&attr->ah_attr) &
1860 IB_AH_GRH);
1861 if (resp.dest.is_global) {
1862 grh = rdma_ah_read_grh(&attr->ah_attr);
1863 memcpy(resp.dest.dgid, grh->dgid.raw, 16);
1864 resp.dest.flow_label = grh->flow_label;
1865 resp.dest.sgid_index = grh->sgid_index;
1866 resp.dest.hop_limit = grh->hop_limit;
1867 resp.dest.traffic_class = grh->traffic_class;
1868 }
1869 resp.dest.port_num = rdma_ah_get_port_num(&attr->ah_attr);
1870
1871 resp.alt_dest.dlid = rdma_ah_get_dlid(&attr->alt_ah_attr);
1872 resp.alt_dest.sl = rdma_ah_get_sl(&attr->alt_ah_attr);
1873 resp.alt_dest.src_path_bits = rdma_ah_get_path_bits(&attr->alt_ah_attr);
1874 resp.alt_dest.static_rate
1875 = rdma_ah_get_static_rate(&attr->alt_ah_attr);
1876 resp.alt_dest.is_global
1877 = !!(rdma_ah_get_ah_flags(&attr->alt_ah_attr) &
1878 IB_AH_GRH);
1879 if (resp.alt_dest.is_global) {
1880 grh = rdma_ah_read_grh(&attr->alt_ah_attr);
1881 memcpy(resp.alt_dest.dgid, grh->dgid.raw, 16);
1882 resp.alt_dest.flow_label = grh->flow_label;
1883 resp.alt_dest.sgid_index = grh->sgid_index;
1884 resp.alt_dest.hop_limit = grh->hop_limit;
1885 resp.alt_dest.traffic_class = grh->traffic_class;
1886 }
1887 resp.alt_dest.port_num = rdma_ah_get_port_num(&attr->alt_ah_attr);
1888
1889 resp.max_send_wr = init_attr->cap.max_send_wr;
1890 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1891 resp.max_send_sge = init_attr->cap.max_send_sge;
1892 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1893 resp.max_inline_data = init_attr->cap.max_inline_data;
1894 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1895
1896 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1897 &resp, sizeof resp))
1898 ret = -EFAULT;
1899
1900 out:
1901 kfree(attr);
1902 kfree(init_attr);
1903
1904 return ret ? ret : in_len;
1905 }
1906
1907 /* Remove ignored fields set in the attribute mask */
1908 static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1909 {
1910 switch (qp_type) {
1911 case IB_QPT_XRC_INI:
1912 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1913 case IB_QPT_XRC_TGT:
1914 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1915 IB_QP_RNR_RETRY);
1916 default:
1917 return mask;
1918 }
1919 }
1920
1921 static int modify_qp(struct ib_uverbs_file *file,
1922 struct ib_uverbs_ex_modify_qp *cmd, struct ib_udata *udata)
1923 {
1924 struct ib_qp_attr *attr;
1925 struct ib_qp *qp;
1926 int ret;
1927
1928 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1929 if (!attr)
1930 return -ENOMEM;
1931
1932 qp = uobj_get_obj_read(qp, cmd->base.qp_handle, file->ucontext);
1933 if (!qp) {
1934 ret = -EINVAL;
1935 goto out;
1936 }
1937
1938 if (!rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1939 ret = -EINVAL;
1940 goto release_qp;
1941 }
1942
1943 attr->qp_state = cmd->base.qp_state;
1944 attr->cur_qp_state = cmd->base.cur_qp_state;
1945 attr->path_mtu = cmd->base.path_mtu;
1946 attr->path_mig_state = cmd->base.path_mig_state;
1947 attr->qkey = cmd->base.qkey;
1948 attr->rq_psn = cmd->base.rq_psn;
1949 attr->sq_psn = cmd->base.sq_psn;
1950 attr->dest_qp_num = cmd->base.dest_qp_num;
1951 attr->qp_access_flags = cmd->base.qp_access_flags;
1952 attr->pkey_index = cmd->base.pkey_index;
1953 attr->alt_pkey_index = cmd->base.alt_pkey_index;
1954 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
1955 attr->max_rd_atomic = cmd->base.max_rd_atomic;
1956 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
1957 attr->min_rnr_timer = cmd->base.min_rnr_timer;
1958 attr->port_num = cmd->base.port_num;
1959 attr->timeout = cmd->base.timeout;
1960 attr->retry_cnt = cmd->base.retry_cnt;
1961 attr->rnr_retry = cmd->base.rnr_retry;
1962 attr->alt_port_num = cmd->base.alt_port_num;
1963 attr->alt_timeout = cmd->base.alt_timeout;
1964 attr->rate_limit = cmd->rate_limit;
1965
1966 attr->ah_attr.type = rdma_ah_find_type(qp->device,
1967 cmd->base.dest.port_num);
1968 if (cmd->base.dest.is_global) {
1969 rdma_ah_set_grh(&attr->ah_attr, NULL,
1970 cmd->base.dest.flow_label,
1971 cmd->base.dest.sgid_index,
1972 cmd->base.dest.hop_limit,
1973 cmd->base.dest.traffic_class);
1974 rdma_ah_set_dgid_raw(&attr->ah_attr, cmd->base.dest.dgid);
1975 } else {
1976 rdma_ah_set_ah_flags(&attr->ah_attr, 0);
1977 }
1978 rdma_ah_set_dlid(&attr->ah_attr, cmd->base.dest.dlid);
1979 rdma_ah_set_sl(&attr->ah_attr, cmd->base.dest.sl);
1980 rdma_ah_set_path_bits(&attr->ah_attr, cmd->base.dest.src_path_bits);
1981 rdma_ah_set_static_rate(&attr->ah_attr, cmd->base.dest.static_rate);
1982 rdma_ah_set_port_num(&attr->ah_attr,
1983 cmd->base.dest.port_num);
1984
1985 attr->alt_ah_attr.type = rdma_ah_find_type(qp->device,
1986 cmd->base.dest.port_num);
1987 if (cmd->base.alt_dest.is_global) {
1988 rdma_ah_set_grh(&attr->alt_ah_attr, NULL,
1989 cmd->base.alt_dest.flow_label,
1990 cmd->base.alt_dest.sgid_index,
1991 cmd->base.alt_dest.hop_limit,
1992 cmd->base.alt_dest.traffic_class);
1993 rdma_ah_set_dgid_raw(&attr->alt_ah_attr,
1994 cmd->base.alt_dest.dgid);
1995 } else {
1996 rdma_ah_set_ah_flags(&attr->alt_ah_attr, 0);
1997 }
1998
1999 rdma_ah_set_dlid(&attr->alt_ah_attr, cmd->base.alt_dest.dlid);
2000 rdma_ah_set_sl(&attr->alt_ah_attr, cmd->base.alt_dest.sl);
2001 rdma_ah_set_path_bits(&attr->alt_ah_attr,
2002 cmd->base.alt_dest.src_path_bits);
2003 rdma_ah_set_static_rate(&attr->alt_ah_attr,
2004 cmd->base.alt_dest.static_rate);
2005 rdma_ah_set_port_num(&attr->alt_ah_attr,
2006 cmd->base.alt_dest.port_num);
2007
2008 if (qp->real_qp == qp) {
2009 if (cmd->base.attr_mask & IB_QP_AV) {
2010 ret = ib_resolve_eth_dmac(qp->device, &attr->ah_attr);
2011 if (ret)
2012 goto release_qp;
2013 }
2014 ret = ib_security_modify_qp(qp,
2015 attr,
2016 modify_qp_mask(qp->qp_type,
2017 cmd->base.attr_mask),
2018 udata);
2019 } else {
2020 ret = ib_security_modify_qp(qp,
2021 attr,
2022 modify_qp_mask(qp->qp_type,
2023 cmd->base.attr_mask),
2024 NULL);
2025 }
2026
2027 release_qp:
2028 uobj_put_obj_read(qp);
2029
2030 out:
2031 kfree(attr);
2032
2033 return ret;
2034 }
2035
2036 ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
2037 struct ib_device *ib_dev,
2038 const char __user *buf, int in_len,
2039 int out_len)
2040 {
2041 struct ib_uverbs_ex_modify_qp cmd = {};
2042 struct ib_udata udata;
2043 int ret;
2044
2045 if (copy_from_user(&cmd.base, buf, sizeof(cmd.base)))
2046 return -EFAULT;
2047
2048 if (cmd.base.attr_mask &
2049 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1))
2050 return -EOPNOTSUPP;
2051
2052 INIT_UDATA(&udata, buf + sizeof(cmd.base), NULL,
2053 in_len - sizeof(cmd.base), out_len);
2054
2055 ret = modify_qp(file, &cmd, &udata);
2056 if (ret)
2057 return ret;
2058
2059 return in_len;
2060 }
2061
2062 int ib_uverbs_ex_modify_qp(struct ib_uverbs_file *file,
2063 struct ib_device *ib_dev,
2064 struct ib_udata *ucore,
2065 struct ib_udata *uhw)
2066 {
2067 struct ib_uverbs_ex_modify_qp cmd = {};
2068 int ret;
2069
2070 /*
2071 * Last bit is reserved for extending the attr_mask by
2072 * using another field.
2073 */
2074 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
2075
2076 if (ucore->inlen < sizeof(cmd.base))
2077 return -EINVAL;
2078
2079 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
2080 if (ret)
2081 return ret;
2082
2083 if (cmd.base.attr_mask &
2084 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1))
2085 return -EOPNOTSUPP;
2086
2087 if (ucore->inlen > sizeof(cmd)) {
2088 if (ib_is_udata_cleared(ucore, sizeof(cmd),
2089 ucore->inlen - sizeof(cmd)))
2090 return -EOPNOTSUPP;
2091 }
2092
2093 ret = modify_qp(file, &cmd, uhw);
2094
2095 return ret;
2096 }
2097
2098 ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
2099 struct ib_device *ib_dev,
2100 const char __user *buf, int in_len,
2101 int out_len)
2102 {
2103 struct ib_uverbs_destroy_qp cmd;
2104 struct ib_uverbs_destroy_qp_resp resp;
2105 struct ib_uobject *uobj;
2106 struct ib_qp *qp;
2107 struct ib_uqp_object *obj;
2108 int ret = -EINVAL;
2109
2110 if (copy_from_user(&cmd, buf, sizeof cmd))
2111 return -EFAULT;
2112
2113 memset(&resp, 0, sizeof resp);
2114
2115 uobj = uobj_get_write(uobj_get_type(qp), cmd.qp_handle,
2116 file->ucontext);
2117 if (IS_ERR(uobj))
2118 return PTR_ERR(uobj);
2119
2120 qp = uobj->object;
2121 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
2122 /*
2123 * Make sure we don't free the memory in remove_commit as we still
2124 * needs the uobject memory to create the response.
2125 */
2126 uverbs_uobject_get(uobj);
2127
2128 ret = uobj_remove_commit(uobj);
2129 if (ret) {
2130 uverbs_uobject_put(uobj);
2131 return ret;
2132 }
2133
2134 resp.events_reported = obj->uevent.events_reported;
2135 uverbs_uobject_put(uobj);
2136
2137 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2138 &resp, sizeof resp))
2139 return -EFAULT;
2140
2141 return in_len;
2142 }
2143
2144 static void *alloc_wr(size_t wr_size, __u32 num_sge)
2145 {
2146 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) /
2147 sizeof (struct ib_sge))
2148 return NULL;
2149
2150 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) +
2151 num_sge * sizeof (struct ib_sge), GFP_KERNEL);
2152 }
2153
2154 ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
2155 struct ib_device *ib_dev,
2156 const char __user *buf, int in_len,
2157 int out_len)
2158 {
2159 struct ib_uverbs_post_send cmd;
2160 struct ib_uverbs_post_send_resp resp;
2161 struct ib_uverbs_send_wr *user_wr;
2162 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
2163 struct ib_qp *qp;
2164 int i, sg_ind;
2165 int is_ud;
2166 ssize_t ret = -EINVAL;
2167 size_t next_size;
2168
2169 if (copy_from_user(&cmd, buf, sizeof cmd))
2170 return -EFAULT;
2171
2172 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
2173 cmd.sge_count * sizeof (struct ib_uverbs_sge))
2174 return -EINVAL;
2175
2176 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
2177 return -EINVAL;
2178
2179 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2180 if (!user_wr)
2181 return -ENOMEM;
2182
2183 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2184 if (!qp)
2185 goto out;
2186
2187 is_ud = qp->qp_type == IB_QPT_UD;
2188 sg_ind = 0;
2189 last = NULL;
2190 for (i = 0; i < cmd.wr_count; ++i) {
2191 if (copy_from_user(user_wr,
2192 buf + sizeof cmd + i * cmd.wqe_size,
2193 cmd.wqe_size)) {
2194 ret = -EFAULT;
2195 goto out_put;
2196 }
2197
2198 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2199 ret = -EINVAL;
2200 goto out_put;
2201 }
2202
2203 if (is_ud) {
2204 struct ib_ud_wr *ud;
2205
2206 if (user_wr->opcode != IB_WR_SEND &&
2207 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2208 ret = -EINVAL;
2209 goto out_put;
2210 }
2211
2212 next_size = sizeof(*ud);
2213 ud = alloc_wr(next_size, user_wr->num_sge);
2214 if (!ud) {
2215 ret = -ENOMEM;
2216 goto out_put;
2217 }
2218
2219 ud->ah = uobj_get_obj_read(ah, user_wr->wr.ud.ah,
2220 file->ucontext);
2221 if (!ud->ah) {
2222 kfree(ud);
2223 ret = -EINVAL;
2224 goto out_put;
2225 }
2226 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2227 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2228
2229 next = &ud->wr;
2230 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2231 user_wr->opcode == IB_WR_RDMA_WRITE ||
2232 user_wr->opcode == IB_WR_RDMA_READ) {
2233 struct ib_rdma_wr *rdma;
2234
2235 next_size = sizeof(*rdma);
2236 rdma = alloc_wr(next_size, user_wr->num_sge);
2237 if (!rdma) {
2238 ret = -ENOMEM;
2239 goto out_put;
2240 }
2241
2242 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2243 rdma->rkey = user_wr->wr.rdma.rkey;
2244
2245 next = &rdma->wr;
2246 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2247 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2248 struct ib_atomic_wr *atomic;
2249
2250 next_size = sizeof(*atomic);
2251 atomic = alloc_wr(next_size, user_wr->num_sge);
2252 if (!atomic) {
2253 ret = -ENOMEM;
2254 goto out_put;
2255 }
2256
2257 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2258 atomic->compare_add = user_wr->wr.atomic.compare_add;
2259 atomic->swap = user_wr->wr.atomic.swap;
2260 atomic->rkey = user_wr->wr.atomic.rkey;
2261
2262 next = &atomic->wr;
2263 } else if (user_wr->opcode == IB_WR_SEND ||
2264 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2265 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2266 next_size = sizeof(*next);
2267 next = alloc_wr(next_size, user_wr->num_sge);
2268 if (!next) {
2269 ret = -ENOMEM;
2270 goto out_put;
2271 }
2272 } else {
2273 ret = -EINVAL;
2274 goto out_put;
2275 }
2276
2277 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2278 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2279 next->ex.imm_data =
2280 (__be32 __force) user_wr->ex.imm_data;
2281 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2282 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2283 }
2284
2285 if (!last)
2286 wr = next;
2287 else
2288 last->next = next;
2289 last = next;
2290
2291 next->next = NULL;
2292 next->wr_id = user_wr->wr_id;
2293 next->num_sge = user_wr->num_sge;
2294 next->opcode = user_wr->opcode;
2295 next->send_flags = user_wr->send_flags;
2296
2297 if (next->num_sge) {
2298 next->sg_list = (void *) next +
2299 ALIGN(next_size, sizeof(struct ib_sge));
2300 if (copy_from_user(next->sg_list,
2301 buf + sizeof cmd +
2302 cmd.wr_count * cmd.wqe_size +
2303 sg_ind * sizeof (struct ib_sge),
2304 next->num_sge * sizeof (struct ib_sge))) {
2305 ret = -EFAULT;
2306 goto out_put;
2307 }
2308 sg_ind += next->num_sge;
2309 } else
2310 next->sg_list = NULL;
2311 }
2312
2313 resp.bad_wr = 0;
2314 ret = qp->device->post_send(qp->real_qp, wr, &bad_wr);
2315 if (ret)
2316 for (next = wr; next; next = next->next) {
2317 ++resp.bad_wr;
2318 if (next == bad_wr)
2319 break;
2320 }
2321
2322 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2323 &resp, sizeof resp))
2324 ret = -EFAULT;
2325
2326 out_put:
2327 uobj_put_obj_read(qp);
2328
2329 while (wr) {
2330 if (is_ud && ud_wr(wr)->ah)
2331 uobj_put_obj_read(ud_wr(wr)->ah);
2332 next = wr->next;
2333 kfree(wr);
2334 wr = next;
2335 }
2336
2337 out:
2338 kfree(user_wr);
2339
2340 return ret ? ret : in_len;
2341 }
2342
2343 static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
2344 int in_len,
2345 u32 wr_count,
2346 u32 sge_count,
2347 u32 wqe_size)
2348 {
2349 struct ib_uverbs_recv_wr *user_wr;
2350 struct ib_recv_wr *wr = NULL, *last, *next;
2351 int sg_ind;
2352 int i;
2353 int ret;
2354
2355 if (in_len < wqe_size * wr_count +
2356 sge_count * sizeof (struct ib_uverbs_sge))
2357 return ERR_PTR(-EINVAL);
2358
2359 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
2360 return ERR_PTR(-EINVAL);
2361
2362 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2363 if (!user_wr)
2364 return ERR_PTR(-ENOMEM);
2365
2366 sg_ind = 0;
2367 last = NULL;
2368 for (i = 0; i < wr_count; ++i) {
2369 if (copy_from_user(user_wr, buf + i * wqe_size,
2370 wqe_size)) {
2371 ret = -EFAULT;
2372 goto err;
2373 }
2374
2375 if (user_wr->num_sge + sg_ind > sge_count) {
2376 ret = -EINVAL;
2377 goto err;
2378 }
2379
2380 if (user_wr->num_sge >=
2381 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) /
2382 sizeof (struct ib_sge)) {
2383 ret = -EINVAL;
2384 goto err;
2385 }
2386
2387 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2388 user_wr->num_sge * sizeof (struct ib_sge),
2389 GFP_KERNEL);
2390 if (!next) {
2391 ret = -ENOMEM;
2392 goto err;
2393 }
2394
2395 if (!last)
2396 wr = next;
2397 else
2398 last->next = next;
2399 last = next;
2400
2401 next->next = NULL;
2402 next->wr_id = user_wr->wr_id;
2403 next->num_sge = user_wr->num_sge;
2404
2405 if (next->num_sge) {
2406 next->sg_list = (void *) next +
2407 ALIGN(sizeof *next, sizeof (struct ib_sge));
2408 if (copy_from_user(next->sg_list,
2409 buf + wr_count * wqe_size +
2410 sg_ind * sizeof (struct ib_sge),
2411 next->num_sge * sizeof (struct ib_sge))) {
2412 ret = -EFAULT;
2413 goto err;
2414 }
2415 sg_ind += next->num_sge;
2416 } else
2417 next->sg_list = NULL;
2418 }
2419
2420 kfree(user_wr);
2421 return wr;
2422
2423 err:
2424 kfree(user_wr);
2425
2426 while (wr) {
2427 next = wr->next;
2428 kfree(wr);
2429 wr = next;
2430 }
2431
2432 return ERR_PTR(ret);
2433 }
2434
2435 ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
2436 struct ib_device *ib_dev,
2437 const char __user *buf, int in_len,
2438 int out_len)
2439 {
2440 struct ib_uverbs_post_recv cmd;
2441 struct ib_uverbs_post_recv_resp resp;
2442 struct ib_recv_wr *wr, *next, *bad_wr;
2443 struct ib_qp *qp;
2444 ssize_t ret = -EINVAL;
2445
2446 if (copy_from_user(&cmd, buf, sizeof cmd))
2447 return -EFAULT;
2448
2449 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2450 in_len - sizeof cmd, cmd.wr_count,
2451 cmd.sge_count, cmd.wqe_size);
2452 if (IS_ERR(wr))
2453 return PTR_ERR(wr);
2454
2455 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2456 if (!qp)
2457 goto out;
2458
2459 resp.bad_wr = 0;
2460 ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr);
2461
2462 uobj_put_obj_read(qp);
2463 if (ret) {
2464 for (next = wr; next; next = next->next) {
2465 ++resp.bad_wr;
2466 if (next == bad_wr)
2467 break;
2468 }
2469 }
2470
2471 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2472 &resp, sizeof resp))
2473 ret = -EFAULT;
2474
2475 out:
2476 while (wr) {
2477 next = wr->next;
2478 kfree(wr);
2479 wr = next;
2480 }
2481
2482 return ret ? ret : in_len;
2483 }
2484
2485 ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
2486 struct ib_device *ib_dev,
2487 const char __user *buf, int in_len,
2488 int out_len)
2489 {
2490 struct ib_uverbs_post_srq_recv cmd;
2491 struct ib_uverbs_post_srq_recv_resp resp;
2492 struct ib_recv_wr *wr, *next, *bad_wr;
2493 struct ib_srq *srq;
2494 ssize_t ret = -EINVAL;
2495
2496 if (copy_from_user(&cmd, buf, sizeof cmd))
2497 return -EFAULT;
2498
2499 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2500 in_len - sizeof cmd, cmd.wr_count,
2501 cmd.sge_count, cmd.wqe_size);
2502 if (IS_ERR(wr))
2503 return PTR_ERR(wr);
2504
2505 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext);
2506 if (!srq)
2507 goto out;
2508
2509 resp.bad_wr = 0;
2510 ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
2511
2512 uobj_put_obj_read(srq);
2513
2514 if (ret)
2515 for (next = wr; next; next = next->next) {
2516 ++resp.bad_wr;
2517 if (next == bad_wr)
2518 break;
2519 }
2520
2521 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2522 &resp, sizeof resp))
2523 ret = -EFAULT;
2524
2525 out:
2526 while (wr) {
2527 next = wr->next;
2528 kfree(wr);
2529 wr = next;
2530 }
2531
2532 return ret ? ret : in_len;
2533 }
2534
2535 ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
2536 struct ib_device *ib_dev,
2537 const char __user *buf, int in_len,
2538 int out_len)
2539 {
2540 struct ib_uverbs_create_ah cmd;
2541 struct ib_uverbs_create_ah_resp resp;
2542 struct ib_uobject *uobj;
2543 struct ib_pd *pd;
2544 struct ib_ah *ah;
2545 struct rdma_ah_attr attr;
2546 int ret;
2547 struct ib_udata udata;
2548 u8 *dmac;
2549
2550 if (out_len < sizeof resp)
2551 return -ENOSPC;
2552
2553 if (copy_from_user(&cmd, buf, sizeof cmd))
2554 return -EFAULT;
2555
2556 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num))
2557 return -EINVAL;
2558
2559 INIT_UDATA(&udata, buf + sizeof(cmd),
2560 (unsigned long)cmd.response + sizeof(resp),
2561 in_len - sizeof(cmd), out_len - sizeof(resp));
2562
2563 uobj = uobj_alloc(uobj_get_type(ah), file->ucontext);
2564 if (IS_ERR(uobj))
2565 return PTR_ERR(uobj);
2566
2567 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext);
2568 if (!pd) {
2569 ret = -EINVAL;
2570 goto err;
2571 }
2572
2573 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2574 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2575 rdma_ah_set_sl(&attr, cmd.attr.sl);
2576 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2577 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2578 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2579
2580 if (cmd.attr.is_global) {
2581 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2582 cmd.attr.grh.sgid_index,
2583 cmd.attr.grh.hop_limit,
2584 cmd.attr.grh.traffic_class);
2585 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2586 } else {
2587 rdma_ah_set_ah_flags(&attr, 0);
2588 }
2589 dmac = rdma_ah_retrieve_dmac(&attr);
2590 if (dmac)
2591 memset(dmac, 0, ETH_ALEN);
2592
2593 ah = pd->device->create_ah(pd, &attr, &udata);
2594
2595 if (IS_ERR(ah)) {
2596 ret = PTR_ERR(ah);
2597 goto err_put;
2598 }
2599
2600 ah->device = pd->device;
2601 ah->pd = pd;
2602 atomic_inc(&pd->usecnt);
2603 ah->uobject = uobj;
2604 uobj->user_handle = cmd.user_handle;
2605 uobj->object = ah;
2606
2607 resp.ah_handle = uobj->id;
2608
2609 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2610 &resp, sizeof resp)) {
2611 ret = -EFAULT;
2612 goto err_copy;
2613 }
2614
2615 uobj_put_obj_read(pd);
2616 uobj_alloc_commit(uobj);
2617
2618 return in_len;
2619
2620 err_copy:
2621 rdma_destroy_ah(ah);
2622
2623 err_put:
2624 uobj_put_obj_read(pd);
2625
2626 err:
2627 uobj_alloc_abort(uobj);
2628 return ret;
2629 }
2630
2631 ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
2632 struct ib_device *ib_dev,
2633 const char __user *buf, int in_len, int out_len)
2634 {
2635 struct ib_uverbs_destroy_ah cmd;
2636 struct ib_uobject *uobj;
2637 int ret;
2638
2639 if (copy_from_user(&cmd, buf, sizeof cmd))
2640 return -EFAULT;
2641
2642 uobj = uobj_get_write(uobj_get_type(ah), cmd.ah_handle,
2643 file->ucontext);
2644 if (IS_ERR(uobj))
2645 return PTR_ERR(uobj);
2646
2647 ret = uobj_remove_commit(uobj);
2648 return ret ?: in_len;
2649 }
2650
2651 ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
2652 struct ib_device *ib_dev,
2653 const char __user *buf, int in_len,
2654 int out_len)
2655 {
2656 struct ib_uverbs_attach_mcast cmd;
2657 struct ib_qp *qp;
2658 struct ib_uqp_object *obj;
2659 struct ib_uverbs_mcast_entry *mcast;
2660 int ret;
2661
2662 if (copy_from_user(&cmd, buf, sizeof cmd))
2663 return -EFAULT;
2664
2665 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2666 if (!qp)
2667 return -EINVAL;
2668
2669 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2670
2671 mutex_lock(&obj->mcast_lock);
2672 list_for_each_entry(mcast, &obj->mcast_list, list)
2673 if (cmd.mlid == mcast->lid &&
2674 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2675 ret = 0;
2676 goto out_put;
2677 }
2678
2679 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2680 if (!mcast) {
2681 ret = -ENOMEM;
2682 goto out_put;
2683 }
2684
2685 mcast->lid = cmd.mlid;
2686 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2687
2688 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2689 if (!ret)
2690 list_add_tail(&mcast->list, &obj->mcast_list);
2691 else
2692 kfree(mcast);
2693
2694 out_put:
2695 mutex_unlock(&obj->mcast_lock);
2696 uobj_put_obj_read(qp);
2697
2698 return ret ? ret : in_len;
2699 }
2700
2701 ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
2702 struct ib_device *ib_dev,
2703 const char __user *buf, int in_len,
2704 int out_len)
2705 {
2706 struct ib_uverbs_detach_mcast cmd;
2707 struct ib_uqp_object *obj;
2708 struct ib_qp *qp;
2709 struct ib_uverbs_mcast_entry *mcast;
2710 int ret = -EINVAL;
2711 bool found = false;
2712
2713 if (copy_from_user(&cmd, buf, sizeof cmd))
2714 return -EFAULT;
2715
2716 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2717 if (!qp)
2718 return -EINVAL;
2719
2720 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2721 mutex_lock(&obj->mcast_lock);
2722
2723 list_for_each_entry(mcast, &obj->mcast_list, list)
2724 if (cmd.mlid == mcast->lid &&
2725 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2726 list_del(&mcast->list);
2727 kfree(mcast);
2728 found = true;
2729 break;
2730 }
2731
2732 if (!found) {
2733 ret = -EINVAL;
2734 goto out_put;
2735 }
2736
2737 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2738
2739 out_put:
2740 mutex_unlock(&obj->mcast_lock);
2741 uobj_put_obj_read(qp);
2742 return ret ? ret : in_len;
2743 }
2744
2745 static int kern_spec_to_ib_spec_action(struct ib_uverbs_flow_spec *kern_spec,
2746 union ib_flow_spec *ib_spec)
2747 {
2748 ib_spec->type = kern_spec->type;
2749 switch (ib_spec->type) {
2750 case IB_FLOW_SPEC_ACTION_TAG:
2751 if (kern_spec->flow_tag.size !=
2752 sizeof(struct ib_uverbs_flow_spec_action_tag))
2753 return -EINVAL;
2754
2755 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2756 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2757 break;
2758 case IB_FLOW_SPEC_ACTION_DROP:
2759 if (kern_spec->drop.size !=
2760 sizeof(struct ib_uverbs_flow_spec_action_drop))
2761 return -EINVAL;
2762
2763 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2764 break;
2765 default:
2766 return -EINVAL;
2767 }
2768 return 0;
2769 }
2770
2771 static size_t kern_spec_filter_sz(struct ib_uverbs_flow_spec_hdr *spec)
2772 {
2773 /* Returns user space filter size, includes padding */
2774 return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2;
2775 }
2776
2777 static ssize_t spec_filter_size(void *kern_spec_filter, u16 kern_filter_size,
2778 u16 ib_real_filter_sz)
2779 {
2780 /*
2781 * User space filter structures must be 64 bit aligned, otherwise this
2782 * may pass, but we won't handle additional new attributes.
2783 */
2784
2785 if (kern_filter_size > ib_real_filter_sz) {
2786 if (memchr_inv(kern_spec_filter +
2787 ib_real_filter_sz, 0,
2788 kern_filter_size - ib_real_filter_sz))
2789 return -EINVAL;
2790 return ib_real_filter_sz;
2791 }
2792 return kern_filter_size;
2793 }
2794
2795 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2796 union ib_flow_spec *ib_spec)
2797 {
2798 ssize_t actual_filter_sz;
2799 ssize_t kern_filter_sz;
2800 ssize_t ib_filter_sz;
2801 void *kern_spec_mask;
2802 void *kern_spec_val;
2803
2804 if (kern_spec->reserved)
2805 return -EINVAL;
2806
2807 ib_spec->type = kern_spec->type;
2808
2809 kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr);
2810 /* User flow spec size must be aligned to 4 bytes */
2811 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2812 return -EINVAL;
2813
2814 kern_spec_val = (void *)kern_spec +
2815 sizeof(struct ib_uverbs_flow_spec_hdr);
2816 kern_spec_mask = kern_spec_val + kern_filter_sz;
2817 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2818 return -EINVAL;
2819
2820 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2821 case IB_FLOW_SPEC_ETH:
2822 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2823 actual_filter_sz = spec_filter_size(kern_spec_mask,
2824 kern_filter_sz,
2825 ib_filter_sz);
2826 if (actual_filter_sz <= 0)
2827 return -EINVAL;
2828 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2829 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2830 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2831 break;
2832 case IB_FLOW_SPEC_IPV4:
2833 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz);
2834 actual_filter_sz = spec_filter_size(kern_spec_mask,
2835 kern_filter_sz,
2836 ib_filter_sz);
2837 if (actual_filter_sz <= 0)
2838 return -EINVAL;
2839 ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
2840 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2841 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2842 break;
2843 case IB_FLOW_SPEC_IPV6:
2844 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz);
2845 actual_filter_sz = spec_filter_size(kern_spec_mask,
2846 kern_filter_sz,
2847 ib_filter_sz);
2848 if (actual_filter_sz <= 0)
2849 return -EINVAL;
2850 ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
2851 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2852 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2853
2854 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2855 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2856 return -EINVAL;
2857 break;
2858 case IB_FLOW_SPEC_TCP:
2859 case IB_FLOW_SPEC_UDP:
2860 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
2861 actual_filter_sz = spec_filter_size(kern_spec_mask,
2862 kern_filter_sz,
2863 ib_filter_sz);
2864 if (actual_filter_sz <= 0)
2865 return -EINVAL;
2866 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2867 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2868 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2869 break;
2870 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2871 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz);
2872 actual_filter_sz = spec_filter_size(kern_spec_mask,
2873 kern_filter_sz,
2874 ib_filter_sz);
2875 if (actual_filter_sz <= 0)
2876 return -EINVAL;
2877 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2878 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2879 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2880
2881 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2882 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2883 return -EINVAL;
2884 break;
2885 default:
2886 return -EINVAL;
2887 }
2888 return 0;
2889 }
2890
2891 static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
2892 union ib_flow_spec *ib_spec)
2893 {
2894 if (kern_spec->reserved)
2895 return -EINVAL;
2896
2897 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2898 return kern_spec_to_ib_spec_action(kern_spec, ib_spec);
2899 else
2900 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2901 }
2902
2903 int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file,
2904 struct ib_device *ib_dev,
2905 struct ib_udata *ucore,
2906 struct ib_udata *uhw)
2907 {
2908 struct ib_uverbs_ex_create_wq cmd = {};
2909 struct ib_uverbs_ex_create_wq_resp resp = {};
2910 struct ib_uwq_object *obj;
2911 int err = 0;
2912 struct ib_cq *cq;
2913 struct ib_pd *pd;
2914 struct ib_wq *wq;
2915 struct ib_wq_init_attr wq_init_attr = {};
2916 size_t required_cmd_sz;
2917 size_t required_resp_len;
2918
2919 required_cmd_sz = offsetof(typeof(cmd), max_sge) + sizeof(cmd.max_sge);
2920 required_resp_len = offsetof(typeof(resp), wqn) + sizeof(resp.wqn);
2921
2922 if (ucore->inlen < required_cmd_sz)
2923 return -EINVAL;
2924
2925 if (ucore->outlen < required_resp_len)
2926 return -ENOSPC;
2927
2928 if (ucore->inlen > sizeof(cmd) &&
2929 !ib_is_udata_cleared(ucore, sizeof(cmd),
2930 ucore->inlen - sizeof(cmd)))
2931 return -EOPNOTSUPP;
2932
2933 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
2934 if (err)
2935 return err;
2936
2937 if (cmd.comp_mask)
2938 return -EOPNOTSUPP;
2939
2940 obj = (struct ib_uwq_object *)uobj_alloc(uobj_get_type(wq),
2941 file->ucontext);
2942 if (IS_ERR(obj))
2943 return PTR_ERR(obj);
2944
2945 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext);
2946 if (!pd) {
2947 err = -EINVAL;
2948 goto err_uobj;
2949 }
2950
2951 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext);
2952 if (!cq) {
2953 err = -EINVAL;
2954 goto err_put_pd;
2955 }
2956
2957 wq_init_attr.cq = cq;
2958 wq_init_attr.max_sge = cmd.max_sge;
2959 wq_init_attr.max_wr = cmd.max_wr;
2960 wq_init_attr.wq_context = file;
2961 wq_init_attr.wq_type = cmd.wq_type;
2962 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2963 if (ucore->inlen >= (offsetof(typeof(cmd), create_flags) +
2964 sizeof(cmd.create_flags)))
2965 wq_init_attr.create_flags = cmd.create_flags;
2966 obj->uevent.events_reported = 0;
2967 INIT_LIST_HEAD(&obj->uevent.event_list);
2968 wq = pd->device->create_wq(pd, &wq_init_attr, uhw);
2969 if (IS_ERR(wq)) {
2970 err = PTR_ERR(wq);
2971 goto err_put_cq;
2972 }
2973
2974 wq->uobject = &obj->uevent.uobject;
2975 obj->uevent.uobject.object = wq;
2976 wq->wq_type = wq_init_attr.wq_type;
2977 wq->cq = cq;
2978 wq->pd = pd;
2979 wq->device = pd->device;
2980 wq->wq_context = wq_init_attr.wq_context;
2981 atomic_set(&wq->usecnt, 0);
2982 atomic_inc(&pd->usecnt);
2983 atomic_inc(&cq->usecnt);
2984 wq->uobject = &obj->uevent.uobject;
2985 obj->uevent.uobject.object = wq;
2986
2987 memset(&resp, 0, sizeof(resp));
2988 resp.wq_handle = obj->uevent.uobject.id;
2989 resp.max_sge = wq_init_attr.max_sge;
2990 resp.max_wr = wq_init_attr.max_wr;
2991 resp.wqn = wq->wq_num;
2992 resp.response_length = required_resp_len;
2993 err = ib_copy_to_udata(ucore,
2994 &resp, resp.response_length);
2995 if (err)
2996 goto err_copy;
2997
2998 uobj_put_obj_read(pd);
2999 uobj_put_obj_read(cq);
3000 uobj_alloc_commit(&obj->uevent.uobject);
3001 return 0;
3002
3003 err_copy:
3004 ib_destroy_wq(wq);
3005 err_put_cq:
3006 uobj_put_obj_read(cq);
3007 err_put_pd:
3008 uobj_put_obj_read(pd);
3009 err_uobj:
3010 uobj_alloc_abort(&obj->uevent.uobject);
3011
3012 return err;
3013 }
3014
3015 int ib_uverbs_ex_destroy_wq(struct ib_uverbs_file *file,
3016 struct ib_device *ib_dev,
3017 struct ib_udata *ucore,
3018 struct ib_udata *uhw)
3019 {
3020 struct ib_uverbs_ex_destroy_wq cmd = {};
3021 struct ib_uverbs_ex_destroy_wq_resp resp = {};
3022 struct ib_wq *wq;
3023 struct ib_uobject *uobj;
3024 struct ib_uwq_object *obj;
3025 size_t required_cmd_sz;
3026 size_t required_resp_len;
3027 int ret;
3028
3029 required_cmd_sz = offsetof(typeof(cmd), wq_handle) + sizeof(cmd.wq_handle);
3030 required_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
3031
3032 if (ucore->inlen < required_cmd_sz)
3033 return -EINVAL;
3034
3035 if (ucore->outlen < required_resp_len)
3036 return -ENOSPC;
3037
3038 if (ucore->inlen > sizeof(cmd) &&
3039 !ib_is_udata_cleared(ucore, sizeof(cmd),
3040 ucore->inlen - sizeof(cmd)))
3041 return -EOPNOTSUPP;
3042
3043 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3044 if (ret)
3045 return ret;
3046
3047 if (cmd.comp_mask)
3048 return -EOPNOTSUPP;
3049
3050 resp.response_length = required_resp_len;
3051 uobj = uobj_get_write(uobj_get_type(wq), cmd.wq_handle,
3052 file->ucontext);
3053 if (IS_ERR(uobj))
3054 return PTR_ERR(uobj);
3055
3056 wq = uobj->object;
3057 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
3058 /*
3059 * Make sure we don't free the memory in remove_commit as we still
3060 * needs the uobject memory to create the response.
3061 */
3062 uverbs_uobject_get(uobj);
3063
3064 ret = uobj_remove_commit(uobj);
3065 resp.events_reported = obj->uevent.events_reported;
3066 uverbs_uobject_put(uobj);
3067 if (ret)
3068 return ret;
3069
3070 return ib_copy_to_udata(ucore, &resp, resp.response_length);
3071 }
3072
3073 int ib_uverbs_ex_modify_wq(struct ib_uverbs_file *file,
3074 struct ib_device *ib_dev,
3075 struct ib_udata *ucore,
3076 struct ib_udata *uhw)
3077 {
3078 struct ib_uverbs_ex_modify_wq cmd = {};
3079 struct ib_wq *wq;
3080 struct ib_wq_attr wq_attr = {};
3081 size_t required_cmd_sz;
3082 int ret;
3083
3084 required_cmd_sz = offsetof(typeof(cmd), curr_wq_state) + sizeof(cmd.curr_wq_state);
3085 if (ucore->inlen < required_cmd_sz)
3086 return -EINVAL;
3087
3088 if (ucore->inlen > sizeof(cmd) &&
3089 !ib_is_udata_cleared(ucore, sizeof(cmd),
3090 ucore->inlen - sizeof(cmd)))
3091 return -EOPNOTSUPP;
3092
3093 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3094 if (ret)
3095 return ret;
3096
3097 if (!cmd.attr_mask)
3098 return -EINVAL;
3099
3100 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3101 return -EINVAL;
3102
3103 wq = uobj_get_obj_read(wq, cmd.wq_handle, file->ucontext);
3104 if (!wq)
3105 return -EINVAL;
3106
3107 wq_attr.curr_wq_state = cmd.curr_wq_state;
3108 wq_attr.wq_state = cmd.wq_state;
3109 if (cmd.attr_mask & IB_WQ_FLAGS) {
3110 wq_attr.flags = cmd.flags;
3111 wq_attr.flags_mask = cmd.flags_mask;
3112 }
3113 ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, uhw);
3114 uobj_put_obj_read(wq);
3115 return ret;
3116 }
3117
3118 int ib_uverbs_ex_create_rwq_ind_table(struct ib_uverbs_file *file,
3119 struct ib_device *ib_dev,
3120 struct ib_udata *ucore,
3121 struct ib_udata *uhw)
3122 {
3123 struct ib_uverbs_ex_create_rwq_ind_table cmd = {};
3124 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3125 struct ib_uobject *uobj;
3126 int err = 0;
3127 struct ib_rwq_ind_table_init_attr init_attr = {};
3128 struct ib_rwq_ind_table *rwq_ind_tbl;
3129 struct ib_wq **wqs = NULL;
3130 u32 *wqs_handles = NULL;
3131 struct ib_wq *wq = NULL;
3132 int i, j, num_read_wqs;
3133 u32 num_wq_handles;
3134 u32 expected_in_size;
3135 size_t required_cmd_sz_header;
3136 size_t required_resp_len;
3137
3138 required_cmd_sz_header = offsetof(typeof(cmd), log_ind_tbl_size) + sizeof(cmd.log_ind_tbl_size);
3139 required_resp_len = offsetof(typeof(resp), ind_tbl_num) + sizeof(resp.ind_tbl_num);
3140
3141 if (ucore->inlen < required_cmd_sz_header)
3142 return -EINVAL;
3143
3144 if (ucore->outlen < required_resp_len)
3145 return -ENOSPC;
3146
3147 err = ib_copy_from_udata(&cmd, ucore, required_cmd_sz_header);
3148 if (err)
3149 return err;
3150
3151 ucore->inbuf += required_cmd_sz_header;
3152 ucore->inlen -= required_cmd_sz_header;
3153
3154 if (cmd.comp_mask)
3155 return -EOPNOTSUPP;
3156
3157 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3158 return -EINVAL;
3159
3160 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3161 expected_in_size = num_wq_handles * sizeof(__u32);
3162 if (num_wq_handles == 1)
3163 /* input size for wq handles is u64 aligned */
3164 expected_in_size += sizeof(__u32);
3165
3166 if (ucore->inlen < expected_in_size)
3167 return -EINVAL;
3168
3169 if (ucore->inlen > expected_in_size &&
3170 !ib_is_udata_cleared(ucore, expected_in_size,
3171 ucore->inlen - expected_in_size))
3172 return -EOPNOTSUPP;
3173
3174 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3175 GFP_KERNEL);
3176 if (!wqs_handles)
3177 return -ENOMEM;
3178
3179 err = ib_copy_from_udata(wqs_handles, ucore,
3180 num_wq_handles * sizeof(__u32));
3181 if (err)
3182 goto err_free;
3183
3184 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3185 if (!wqs) {
3186 err = -ENOMEM;
3187 goto err_free;
3188 }
3189
3190 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3191 num_read_wqs++) {
3192 wq = uobj_get_obj_read(wq, wqs_handles[num_read_wqs],
3193 file->ucontext);
3194 if (!wq) {
3195 err = -EINVAL;
3196 goto put_wqs;
3197 }
3198
3199 wqs[num_read_wqs] = wq;
3200 }
3201
3202 uobj = uobj_alloc(uobj_get_type(rwq_ind_table), file->ucontext);
3203 if (IS_ERR(uobj)) {
3204 err = PTR_ERR(uobj);
3205 goto put_wqs;
3206 }
3207
3208 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3209 init_attr.ind_tbl = wqs;
3210 rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, uhw);
3211
3212 if (IS_ERR(rwq_ind_tbl)) {
3213 err = PTR_ERR(rwq_ind_tbl);
3214 goto err_uobj;
3215 }
3216
3217 rwq_ind_tbl->ind_tbl = wqs;
3218 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3219 rwq_ind_tbl->uobject = uobj;
3220 uobj->object = rwq_ind_tbl;
3221 rwq_ind_tbl->device = ib_dev;
3222 atomic_set(&rwq_ind_tbl->usecnt, 0);
3223
3224 for (i = 0; i < num_wq_handles; i++)
3225 atomic_inc(&wqs[i]->usecnt);
3226
3227 resp.ind_tbl_handle = uobj->id;
3228 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3229 resp.response_length = required_resp_len;
3230
3231 err = ib_copy_to_udata(ucore,
3232 &resp, resp.response_length);
3233 if (err)
3234 goto err_copy;
3235
3236 kfree(wqs_handles);
3237
3238 for (j = 0; j < num_read_wqs; j++)
3239 uobj_put_obj_read(wqs[j]);
3240
3241 uobj_alloc_commit(uobj);
3242 return 0;
3243
3244 err_copy:
3245 ib_destroy_rwq_ind_table(rwq_ind_tbl);
3246 err_uobj:
3247 uobj_alloc_abort(uobj);
3248 put_wqs:
3249 for (j = 0; j < num_read_wqs; j++)
3250 uobj_put_obj_read(wqs[j]);
3251 err_free:
3252 kfree(wqs_handles);
3253 kfree(wqs);
3254 return err;
3255 }
3256
3257 int ib_uverbs_ex_destroy_rwq_ind_table(struct ib_uverbs_file *file,
3258 struct ib_device *ib_dev,
3259 struct ib_udata *ucore,
3260 struct ib_udata *uhw)
3261 {
3262 struct ib_uverbs_ex_destroy_rwq_ind_table cmd = {};
3263 struct ib_uobject *uobj;
3264 int ret;
3265 size_t required_cmd_sz;
3266
3267 required_cmd_sz = offsetof(typeof(cmd), ind_tbl_handle) + sizeof(cmd.ind_tbl_handle);
3268
3269 if (ucore->inlen < required_cmd_sz)
3270 return -EINVAL;
3271
3272 if (ucore->inlen > sizeof(cmd) &&
3273 !ib_is_udata_cleared(ucore, sizeof(cmd),
3274 ucore->inlen - sizeof(cmd)))
3275 return -EOPNOTSUPP;
3276
3277 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3278 if (ret)
3279 return ret;
3280
3281 if (cmd.comp_mask)
3282 return -EOPNOTSUPP;
3283
3284 uobj = uobj_get_write(uobj_get_type(rwq_ind_table), cmd.ind_tbl_handle,
3285 file->ucontext);
3286 if (IS_ERR(uobj))
3287 return PTR_ERR(uobj);
3288
3289 return uobj_remove_commit(uobj);
3290 }
3291
3292 int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
3293 struct ib_device *ib_dev,
3294 struct ib_udata *ucore,
3295 struct ib_udata *uhw)
3296 {
3297 struct ib_uverbs_create_flow cmd;
3298 struct ib_uverbs_create_flow_resp resp;
3299 struct ib_uobject *uobj;
3300 struct ib_flow *flow_id;
3301 struct ib_uverbs_flow_attr *kern_flow_attr;
3302 struct ib_flow_attr *flow_attr;
3303 struct ib_qp *qp;
3304 int err = 0;
3305 void *kern_spec;
3306 void *ib_spec;
3307 int i;
3308
3309 if (ucore->inlen < sizeof(cmd))
3310 return -EINVAL;
3311
3312 if (ucore->outlen < sizeof(resp))
3313 return -ENOSPC;
3314
3315 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3316 if (err)
3317 return err;
3318
3319 ucore->inbuf += sizeof(cmd);
3320 ucore->inlen -= sizeof(cmd);
3321
3322 if (cmd.comp_mask)
3323 return -EINVAL;
3324
3325 if (!capable(CAP_NET_RAW))
3326 return -EPERM;
3327
3328 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3329 return -EINVAL;
3330
3331 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3332 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3333 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3334 return -EINVAL;
3335
3336 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3337 return -EINVAL;
3338
3339 if (cmd.flow_attr.size > ucore->inlen ||
3340 cmd.flow_attr.size >
3341 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3342 return -EINVAL;
3343
3344 if (cmd.flow_attr.reserved[0] ||
3345 cmd.flow_attr.reserved[1])
3346 return -EINVAL;
3347
3348 if (cmd.flow_attr.num_of_specs) {
3349 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3350 GFP_KERNEL);
3351 if (!kern_flow_attr)
3352 return -ENOMEM;
3353
3354 memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr));
3355 err = ib_copy_from_udata(kern_flow_attr + 1, ucore,
3356 cmd.flow_attr.size);
3357 if (err)
3358 goto err_free_attr;
3359 } else {
3360 kern_flow_attr = &cmd.flow_attr;
3361 }
3362
3363 uobj = uobj_alloc(uobj_get_type(flow), file->ucontext);
3364 if (IS_ERR(uobj)) {
3365 err = PTR_ERR(uobj);
3366 goto err_free_attr;
3367 }
3368
3369 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
3370 if (!qp) {
3371 err = -EINVAL;
3372 goto err_uobj;
3373 }
3374
3375 flow_attr = kzalloc(sizeof(*flow_attr) + cmd.flow_attr.num_of_specs *
3376 sizeof(union ib_flow_spec), GFP_KERNEL);
3377 if (!flow_attr) {
3378 err = -ENOMEM;
3379 goto err_put;
3380 }
3381
3382 flow_attr->type = kern_flow_attr->type;
3383 flow_attr->priority = kern_flow_attr->priority;
3384 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3385 flow_attr->port = kern_flow_attr->port;
3386 flow_attr->flags = kern_flow_attr->flags;
3387 flow_attr->size = sizeof(*flow_attr);
3388
3389 kern_spec = kern_flow_attr + 1;
3390 ib_spec = flow_attr + 1;
3391 for (i = 0; i < flow_attr->num_of_specs &&
3392 cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) &&
3393 cmd.flow_attr.size >=
3394 ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) {
3395 err = kern_spec_to_ib_spec(kern_spec, ib_spec);
3396 if (err)
3397 goto err_free;
3398 flow_attr->size +=
3399 ((union ib_flow_spec *) ib_spec)->size;
3400 cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size;
3401 kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size;
3402 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3403 }
3404 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3405 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
3406 i, cmd.flow_attr.size);
3407 err = -EINVAL;
3408 goto err_free;
3409 }
3410 flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER);
3411 if (IS_ERR(flow_id)) {
3412 err = PTR_ERR(flow_id);
3413 goto err_free;
3414 }
3415 flow_id->uobject = uobj;
3416 uobj->object = flow_id;
3417
3418 memset(&resp, 0, sizeof(resp));
3419 resp.flow_handle = uobj->id;
3420
3421 err = ib_copy_to_udata(ucore,
3422 &resp, sizeof(resp));
3423 if (err)
3424 goto err_copy;
3425
3426 uobj_put_obj_read(qp);
3427 uobj_alloc_commit(uobj);
3428 kfree(flow_attr);
3429 if (cmd.flow_attr.num_of_specs)
3430 kfree(kern_flow_attr);
3431 return 0;
3432 err_copy:
3433 ib_destroy_flow(flow_id);
3434 err_free:
3435 kfree(flow_attr);
3436 err_put:
3437 uobj_put_obj_read(qp);
3438 err_uobj:
3439 uobj_alloc_abort(uobj);
3440 err_free_attr:
3441 if (cmd.flow_attr.num_of_specs)
3442 kfree(kern_flow_attr);
3443 return err;
3444 }
3445
3446 int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file,
3447 struct ib_device *ib_dev,
3448 struct ib_udata *ucore,
3449 struct ib_udata *uhw)
3450 {
3451 struct ib_uverbs_destroy_flow cmd;
3452 struct ib_uobject *uobj;
3453 int ret;
3454
3455 if (ucore->inlen < sizeof(cmd))
3456 return -EINVAL;
3457
3458 ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3459 if (ret)
3460 return ret;
3461
3462 if (cmd.comp_mask)
3463 return -EINVAL;
3464
3465 uobj = uobj_get_write(uobj_get_type(flow), cmd.flow_handle,
3466 file->ucontext);
3467 if (IS_ERR(uobj))
3468 return PTR_ERR(uobj);
3469
3470 ret = uobj_remove_commit(uobj);
3471 return ret;
3472 }
3473
3474 static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
3475 struct ib_device *ib_dev,
3476 struct ib_uverbs_create_xsrq *cmd,
3477 struct ib_udata *udata)
3478 {
3479 struct ib_uverbs_create_srq_resp resp;
3480 struct ib_usrq_object *obj;
3481 struct ib_pd *pd;
3482 struct ib_srq *srq;
3483 struct ib_uobject *uninitialized_var(xrcd_uobj);
3484 struct ib_srq_init_attr attr;
3485 int ret;
3486
3487 obj = (struct ib_usrq_object *)uobj_alloc(uobj_get_type(srq),
3488 file->ucontext);
3489 if (IS_ERR(obj))
3490 return PTR_ERR(obj);
3491
3492 if (cmd->srq_type == IB_SRQT_XRC) {
3493 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->xrcd_handle,
3494 file->ucontext);
3495 if (IS_ERR(xrcd_uobj)) {
3496 ret = -EINVAL;
3497 goto err;
3498 }
3499
3500 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3501 if (!attr.ext.xrc.xrcd) {
3502 ret = -EINVAL;
3503 goto err_put_xrcd;
3504 }
3505
3506 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3507 atomic_inc(&obj->uxrcd->refcnt);
3508
3509 attr.ext.xrc.cq = uobj_get_obj_read(cq, cmd->cq_handle,
3510 file->ucontext);
3511 if (!attr.ext.xrc.cq) {
3512 ret = -EINVAL;
3513 goto err_put_xrcd;
3514 }
3515 }
3516
3517 pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext);
3518 if (!pd) {
3519 ret = -EINVAL;
3520 goto err_put_cq;
3521 }
3522
3523 attr.event_handler = ib_uverbs_srq_event_handler;
3524 attr.srq_context = file;
3525 attr.srq_type = cmd->srq_type;
3526 attr.attr.max_wr = cmd->max_wr;
3527 attr.attr.max_sge = cmd->max_sge;
3528 attr.attr.srq_limit = cmd->srq_limit;
3529
3530 obj->uevent.events_reported = 0;
3531 INIT_LIST_HEAD(&obj->uevent.event_list);
3532
3533 srq = pd->device->create_srq(pd, &attr, udata);
3534 if (IS_ERR(srq)) {
3535 ret = PTR_ERR(srq);
3536 goto err_put;
3537 }
3538
3539 srq->device = pd->device;
3540 srq->pd = pd;
3541 srq->srq_type = cmd->srq_type;
3542 srq->uobject = &obj->uevent.uobject;
3543 srq->event_handler = attr.event_handler;
3544 srq->srq_context = attr.srq_context;
3545
3546 if (cmd->srq_type == IB_SRQT_XRC) {
3547 srq->ext.xrc.cq = attr.ext.xrc.cq;
3548 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
3549 atomic_inc(&attr.ext.xrc.cq->usecnt);
3550 atomic_inc(&attr.ext.xrc.xrcd->usecnt);
3551 }
3552
3553 atomic_inc(&pd->usecnt);
3554 atomic_set(&srq->usecnt, 0);
3555
3556 obj->uevent.uobject.object = srq;
3557 obj->uevent.uobject.user_handle = cmd->user_handle;
3558
3559 memset(&resp, 0, sizeof resp);
3560 resp.srq_handle = obj->uevent.uobject.id;
3561 resp.max_wr = attr.attr.max_wr;
3562 resp.max_sge = attr.attr.max_sge;
3563 if (cmd->srq_type == IB_SRQT_XRC)
3564 resp.srqn = srq->ext.xrc.srq_num;
3565
3566 if (copy_to_user((void __user *) (unsigned long) cmd->response,
3567 &resp, sizeof resp)) {
3568 ret = -EFAULT;
3569 goto err_copy;
3570 }
3571
3572 if (cmd->srq_type == IB_SRQT_XRC) {
3573 uobj_put_read(xrcd_uobj);
3574 uobj_put_obj_read(attr.ext.xrc.cq);
3575 }
3576 uobj_put_obj_read(pd);
3577 uobj_alloc_commit(&obj->uevent.uobject);
3578
3579 return 0;
3580
3581 err_copy:
3582 ib_destroy_srq(srq);
3583
3584 err_put:
3585 uobj_put_obj_read(pd);
3586
3587 err_put_cq:
3588 if (cmd->srq_type == IB_SRQT_XRC)
3589 uobj_put_obj_read(attr.ext.xrc.cq);
3590
3591 err_put_xrcd:
3592 if (cmd->srq_type == IB_SRQT_XRC) {
3593 atomic_dec(&obj->uxrcd->refcnt);
3594 uobj_put_read(xrcd_uobj);
3595 }
3596
3597 err:
3598 uobj_alloc_abort(&obj->uevent.uobject);
3599 return ret;
3600 }
3601
3602 ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
3603 struct ib_device *ib_dev,
3604 const char __user *buf, int in_len,
3605 int out_len)
3606 {
3607 struct ib_uverbs_create_srq cmd;
3608 struct ib_uverbs_create_xsrq xcmd;
3609 struct ib_uverbs_create_srq_resp resp;
3610 struct ib_udata udata;
3611 int ret;
3612
3613 if (out_len < sizeof resp)
3614 return -ENOSPC;
3615
3616 if (copy_from_user(&cmd, buf, sizeof cmd))
3617 return -EFAULT;
3618
3619 xcmd.response = cmd.response;
3620 xcmd.user_handle = cmd.user_handle;
3621 xcmd.srq_type = IB_SRQT_BASIC;
3622 xcmd.pd_handle = cmd.pd_handle;
3623 xcmd.max_wr = cmd.max_wr;
3624 xcmd.max_sge = cmd.max_sge;
3625 xcmd.srq_limit = cmd.srq_limit;
3626
3627 INIT_UDATA(&udata, buf + sizeof cmd,
3628 (unsigned long) cmd.response + sizeof resp,
3629 in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr),
3630 out_len - sizeof resp);
3631
3632 ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata);
3633 if (ret)
3634 return ret;
3635
3636 return in_len;
3637 }
3638
3639 ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file,
3640 struct ib_device *ib_dev,
3641 const char __user *buf, int in_len, int out_len)
3642 {
3643 struct ib_uverbs_create_xsrq cmd;
3644 struct ib_uverbs_create_srq_resp resp;
3645 struct ib_udata udata;
3646 int ret;
3647
3648 if (out_len < sizeof resp)
3649 return -ENOSPC;
3650
3651 if (copy_from_user(&cmd, buf, sizeof cmd))
3652 return -EFAULT;
3653
3654 INIT_UDATA(&udata, buf + sizeof cmd,
3655 (unsigned long) cmd.response + sizeof resp,
3656 in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr),
3657 out_len - sizeof resp);
3658
3659 ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata);
3660 if (ret)
3661 return ret;
3662
3663 return in_len;
3664 }
3665
3666 ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
3667 struct ib_device *ib_dev,
3668 const char __user *buf, int in_len,
3669 int out_len)
3670 {
3671 struct ib_uverbs_modify_srq cmd;
3672 struct ib_udata udata;
3673 struct ib_srq *srq;
3674 struct ib_srq_attr attr;
3675 int ret;
3676
3677 if (copy_from_user(&cmd, buf, sizeof cmd))
3678 return -EFAULT;
3679
3680 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
3681 out_len);
3682
3683 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext);
3684 if (!srq)
3685 return -EINVAL;
3686
3687 attr.max_wr = cmd.max_wr;
3688 attr.srq_limit = cmd.srq_limit;
3689
3690 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata);
3691
3692 uobj_put_obj_read(srq);
3693
3694 return ret ? ret : in_len;
3695 }
3696
3697 ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
3698 struct ib_device *ib_dev,
3699 const char __user *buf,
3700 int in_len, int out_len)
3701 {
3702 struct ib_uverbs_query_srq cmd;
3703 struct ib_uverbs_query_srq_resp resp;
3704 struct ib_srq_attr attr;
3705 struct ib_srq *srq;
3706 int ret;
3707
3708 if (out_len < sizeof resp)
3709 return -ENOSPC;
3710
3711 if (copy_from_user(&cmd, buf, sizeof cmd))
3712 return -EFAULT;
3713
3714 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext);
3715 if (!srq)
3716 return -EINVAL;
3717
3718 ret = ib_query_srq(srq, &attr);
3719
3720 uobj_put_obj_read(srq);
3721
3722 if (ret)
3723 return ret;
3724
3725 memset(&resp, 0, sizeof resp);
3726
3727 resp.max_wr = attr.max_wr;
3728 resp.max_sge = attr.max_sge;
3729 resp.srq_limit = attr.srq_limit;
3730
3731 if (copy_to_user((void __user *) (unsigned long) cmd.response,
3732 &resp, sizeof resp))
3733 return -EFAULT;
3734
3735 return in_len;
3736 }
3737
3738 ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
3739 struct ib_device *ib_dev,
3740 const char __user *buf, int in_len,
3741 int out_len)
3742 {
3743 struct ib_uverbs_destroy_srq cmd;
3744 struct ib_uverbs_destroy_srq_resp resp;
3745 struct ib_uobject *uobj;
3746 struct ib_srq *srq;
3747 struct ib_uevent_object *obj;
3748 int ret = -EINVAL;
3749 enum ib_srq_type srq_type;
3750
3751 if (copy_from_user(&cmd, buf, sizeof cmd))
3752 return -EFAULT;
3753
3754 uobj = uobj_get_write(uobj_get_type(srq), cmd.srq_handle,
3755 file->ucontext);
3756 if (IS_ERR(uobj))
3757 return PTR_ERR(uobj);
3758
3759 srq = uobj->object;
3760 obj = container_of(uobj, struct ib_uevent_object, uobject);
3761 srq_type = srq->srq_type;
3762 /*
3763 * Make sure we don't free the memory in remove_commit as we still
3764 * needs the uobject memory to create the response.
3765 */
3766 uverbs_uobject_get(uobj);
3767
3768 memset(&resp, 0, sizeof(resp));
3769
3770 ret = uobj_remove_commit(uobj);
3771 if (ret) {
3772 uverbs_uobject_put(uobj);
3773 return ret;
3774 }
3775 resp.events_reported = obj->events_reported;
3776 uverbs_uobject_put(uobj);
3777 if (copy_to_user((void __user *)(unsigned long)cmd.response,
3778 &resp, sizeof(resp)))
3779 return -EFAULT;
3780
3781 return in_len;
3782 }
3783
3784 int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
3785 struct ib_device *ib_dev,
3786 struct ib_udata *ucore,
3787 struct ib_udata *uhw)
3788 {
3789 struct ib_uverbs_ex_query_device_resp resp = { {0} };
3790 struct ib_uverbs_ex_query_device cmd;
3791 struct ib_device_attr attr = {0};
3792 int err;
3793
3794 if (ucore->inlen < sizeof(cmd))
3795 return -EINVAL;
3796
3797 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3798 if (err)
3799 return err;
3800
3801 if (cmd.comp_mask)
3802 return -EINVAL;
3803
3804 if (cmd.reserved)
3805 return -EINVAL;
3806
3807 resp.response_length = offsetof(typeof(resp), odp_caps);
3808
3809 if (ucore->outlen < resp.response_length)
3810 return -ENOSPC;
3811
3812 err = ib_dev->query_device(ib_dev, &attr, uhw);
3813 if (err)
3814 return err;
3815
3816 copy_query_dev_fields(file, ib_dev, &resp.base, &attr);
3817
3818 if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps))
3819 goto end;
3820
3821 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
3822 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3823 resp.odp_caps.per_transport_caps.rc_odp_caps =
3824 attr.odp_caps.per_transport_caps.rc_odp_caps;
3825 resp.odp_caps.per_transport_caps.uc_odp_caps =
3826 attr.odp_caps.per_transport_caps.uc_odp_caps;
3827 resp.odp_caps.per_transport_caps.ud_odp_caps =
3828 attr.odp_caps.per_transport_caps.ud_odp_caps;
3829 #endif
3830 resp.response_length += sizeof(resp.odp_caps);
3831
3832 if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask))
3833 goto end;
3834
3835 resp.timestamp_mask = attr.timestamp_mask;
3836 resp.response_length += sizeof(resp.timestamp_mask);
3837
3838 if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock))
3839 goto end;
3840
3841 resp.hca_core_clock = attr.hca_core_clock;
3842 resp.response_length += sizeof(resp.hca_core_clock);
3843
3844 if (ucore->outlen < resp.response_length + sizeof(resp.device_cap_flags_ex))
3845 goto end;
3846
3847 resp.device_cap_flags_ex = attr.device_cap_flags;
3848 resp.response_length += sizeof(resp.device_cap_flags_ex);
3849
3850 if (ucore->outlen < resp.response_length + sizeof(resp.rss_caps))
3851 goto end;
3852
3853 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3854 resp.rss_caps.max_rwq_indirection_tables =
3855 attr.rss_caps.max_rwq_indirection_tables;
3856 resp.rss_caps.max_rwq_indirection_table_size =
3857 attr.rss_caps.max_rwq_indirection_table_size;
3858
3859 resp.response_length += sizeof(resp.rss_caps);
3860
3861 if (ucore->outlen < resp.response_length + sizeof(resp.max_wq_type_rq))
3862 goto end;
3863
3864 resp.max_wq_type_rq = attr.max_wq_type_rq;
3865 resp.response_length += sizeof(resp.max_wq_type_rq);
3866
3867 if (ucore->outlen < resp.response_length + sizeof(resp.raw_packet_caps))
3868 goto end;
3869
3870 resp.raw_packet_caps = attr.raw_packet_caps;
3871 resp.response_length += sizeof(resp.raw_packet_caps);
3872 end:
3873 err = ib_copy_to_udata(ucore, &resp, resp.response_length);
3874 return err;
3875 }
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