]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - drivers/infiniband/core/uverbs_cmd.c
projects / mirror_ubuntu-artful-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
[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_file->ev_queue : NULL;
1019 atomic_set(&cq->usecnt, 0);
1020
1021 obj->uobject.object = cq;
1022 memset(&resp, 0, sizeof resp);
1023 resp.base.cq_handle = obj->uobject.id;
1024 resp.base.cqe = cq->cqe;
1025
1026 resp.response_length = offsetof(typeof(resp), response_length) +
1027 sizeof(resp.response_length);
1028
1029 ret = cb(file, obj, &resp, ucore, context);
1030 if (ret)
1031 goto err_cb;
1032
1033 uobj_alloc_commit(&obj->uobject);
1034
1035 return obj;
1036
1037 err_cb:
1038 ib_destroy_cq(cq);
1039
1040 err_file:
1041 if (ev_file)
1042 ib_uverbs_release_ucq(file, ev_file, obj);
1043
1044 err:
1045 uobj_alloc_abort(&obj->uobject);
1046
1047 return ERR_PTR(ret);
1048 }
1049
1050 static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file,
1051 struct ib_ucq_object *obj,
1052 struct ib_uverbs_ex_create_cq_resp *resp,
1053 struct ib_udata *ucore, void *context)
1054 {
1055 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1056 return -EFAULT;
1057
1058 return 0;
1059 }
1060
1061 ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
1062 struct ib_device *ib_dev,
1063 const char __user *buf, int in_len,
1064 int out_len)
1065 {
1066 struct ib_uverbs_create_cq cmd;
1067 struct ib_uverbs_ex_create_cq cmd_ex;
1068 struct ib_uverbs_create_cq_resp resp;
1069 struct ib_udata ucore;
1070 struct ib_udata uhw;
1071 struct ib_ucq_object *obj;
1072
1073 if (out_len < sizeof(resp))
1074 return -ENOSPC;
1075
1076 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1077 return -EFAULT;
1078
1079 INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd), sizeof(resp));
1080
1081 INIT_UDATA(&uhw, buf + sizeof(cmd),
1082 (unsigned long)cmd.response + sizeof(resp),
1083 in_len - sizeof(cmd), out_len - sizeof(resp));
1084
1085 memset(&cmd_ex, 0, sizeof(cmd_ex));
1086 cmd_ex.user_handle = cmd.user_handle;
1087 cmd_ex.cqe = cmd.cqe;
1088 cmd_ex.comp_vector = cmd.comp_vector;
1089 cmd_ex.comp_channel = cmd.comp_channel;
1090
1091 obj = create_cq(file, ib_dev, &ucore, &uhw, &cmd_ex,
1092 offsetof(typeof(cmd_ex), comp_channel) +
1093 sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb,
1094 NULL);
1095
1096 if (IS_ERR(obj))
1097 return PTR_ERR(obj);
1098
1099 return in_len;
1100 }
1101
1102 static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file,
1103 struct ib_ucq_object *obj,
1104 struct ib_uverbs_ex_create_cq_resp *resp,
1105 struct ib_udata *ucore, void *context)
1106 {
1107 if (ib_copy_to_udata(ucore, resp, resp->response_length))
1108 return -EFAULT;
1109
1110 return 0;
1111 }
1112
1113 int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file,
1114 struct ib_device *ib_dev,
1115 struct ib_udata *ucore,
1116 struct ib_udata *uhw)
1117 {
1118 struct ib_uverbs_ex_create_cq_resp resp;
1119 struct ib_uverbs_ex_create_cq cmd;
1120 struct ib_ucq_object *obj;
1121 int err;
1122
1123 if (ucore->inlen < sizeof(cmd))
1124 return -EINVAL;
1125
1126 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
1127 if (err)
1128 return err;
1129
1130 if (cmd.comp_mask)
1131 return -EINVAL;
1132
1133 if (cmd.reserved)
1134 return -EINVAL;
1135
1136 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
1137 sizeof(resp.response_length)))
1138 return -ENOSPC;
1139
1140 obj = create_cq(file, ib_dev, ucore, uhw, &cmd,
1141 min(ucore->inlen, sizeof(cmd)),
1142 ib_uverbs_ex_create_cq_cb, NULL);
1143
1144 if (IS_ERR(obj))
1145 return PTR_ERR(obj);
1146
1147 return 0;
1148 }
1149
1150 ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
1151 struct ib_device *ib_dev,
1152 const char __user *buf, int in_len,
1153 int out_len)
1154 {
1155 struct ib_uverbs_resize_cq cmd;
1156 struct ib_uverbs_resize_cq_resp resp = {};
1157 struct ib_udata udata;
1158 struct ib_cq *cq;
1159 int ret = -EINVAL;
1160
1161 if (copy_from_user(&cmd, buf, sizeof cmd))
1162 return -EFAULT;
1163
1164 INIT_UDATA(&udata, buf + sizeof cmd,
1165 (unsigned long) cmd.response + sizeof resp,
1166 in_len - sizeof cmd, out_len - sizeof resp);
1167
1168 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext);
1169 if (!cq)
1170 return -EINVAL;
1171
1172 ret = cq->device->resize_cq(cq, cmd.cqe, &udata);
1173 if (ret)
1174 goto out;
1175
1176 resp.cqe = cq->cqe;
1177
1178 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1179 &resp, sizeof resp.cqe))
1180 ret = -EFAULT;
1181
1182 out:
1183 uobj_put_obj_read(cq);
1184
1185 return ret ? ret : in_len;
1186 }
1187
1188 static int copy_wc_to_user(void __user *dest, struct ib_wc *wc)
1189 {
1190 struct ib_uverbs_wc tmp;
1191
1192 tmp.wr_id = wc->wr_id;
1193 tmp.status = wc->status;
1194 tmp.opcode = wc->opcode;
1195 tmp.vendor_err = wc->vendor_err;
1196 tmp.byte_len = wc->byte_len;
1197 tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data;
1198 tmp.qp_num = wc->qp->qp_num;
1199 tmp.src_qp = wc->src_qp;
1200 tmp.wc_flags = wc->wc_flags;
1201 tmp.pkey_index = wc->pkey_index;
1202 tmp.slid = wc->slid;
1203 tmp.sl = wc->sl;
1204 tmp.dlid_path_bits = wc->dlid_path_bits;
1205 tmp.port_num = wc->port_num;
1206 tmp.reserved = 0;
1207
1208 if (copy_to_user(dest, &tmp, sizeof tmp))
1209 return -EFAULT;
1210
1211 return 0;
1212 }
1213
1214 ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
1215 struct ib_device *ib_dev,
1216 const char __user *buf, int in_len,
1217 int out_len)
1218 {
1219 struct ib_uverbs_poll_cq cmd;
1220 struct ib_uverbs_poll_cq_resp resp;
1221 u8 __user *header_ptr;
1222 u8 __user *data_ptr;
1223 struct ib_cq *cq;
1224 struct ib_wc wc;
1225 int ret;
1226
1227 if (copy_from_user(&cmd, buf, sizeof cmd))
1228 return -EFAULT;
1229
1230 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext);
1231 if (!cq)
1232 return -EINVAL;
1233
1234 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1235 header_ptr = (void __user *)(unsigned long) cmd.response;
1236 data_ptr = header_ptr + sizeof resp;
1237
1238 memset(&resp, 0, sizeof resp);
1239 while (resp.count < cmd.ne) {
1240 ret = ib_poll_cq(cq, 1, &wc);
1241 if (ret < 0)
1242 goto out_put;
1243 if (!ret)
1244 break;
1245
1246 ret = copy_wc_to_user(data_ptr, &wc);
1247 if (ret)
1248 goto out_put;
1249
1250 data_ptr += sizeof(struct ib_uverbs_wc);
1251 ++resp.count;
1252 }
1253
1254 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1255 ret = -EFAULT;
1256 goto out_put;
1257 }
1258
1259 ret = in_len;
1260
1261 out_put:
1262 uobj_put_obj_read(cq);
1263 return ret;
1264 }
1265
1266 ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
1267 struct ib_device *ib_dev,
1268 const char __user *buf, int in_len,
1269 int out_len)
1270 {
1271 struct ib_uverbs_req_notify_cq cmd;
1272 struct ib_cq *cq;
1273
1274 if (copy_from_user(&cmd, buf, sizeof cmd))
1275 return -EFAULT;
1276
1277 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext);
1278 if (!cq)
1279 return -EINVAL;
1280
1281 ib_req_notify_cq(cq, cmd.solicited_only ?
1282 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1283
1284 uobj_put_obj_read(cq);
1285
1286 return in_len;
1287 }
1288
1289 ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
1290 struct ib_device *ib_dev,
1291 const char __user *buf, int in_len,
1292 int out_len)
1293 {
1294 struct ib_uverbs_destroy_cq cmd;
1295 struct ib_uverbs_destroy_cq_resp resp;
1296 struct ib_uobject *uobj;
1297 struct ib_cq *cq;
1298 struct ib_ucq_object *obj;
1299 int ret = -EINVAL;
1300
1301 if (copy_from_user(&cmd, buf, sizeof cmd))
1302 return -EFAULT;
1303
1304 uobj = uobj_get_write(uobj_get_type(cq), cmd.cq_handle,
1305 file->ucontext);
1306 if (IS_ERR(uobj))
1307 return PTR_ERR(uobj);
1308
1309 /*
1310 * Make sure we don't free the memory in remove_commit as we still
1311 * needs the uobject memory to create the response.
1312 */
1313 uverbs_uobject_get(uobj);
1314 cq = uobj->object;
1315 obj = container_of(cq->uobject, struct ib_ucq_object, uobject);
1316
1317 memset(&resp, 0, sizeof(resp));
1318
1319 ret = uobj_remove_commit(uobj);
1320 if (ret) {
1321 uverbs_uobject_put(uobj);
1322 return ret;
1323 }
1324
1325 resp.comp_events_reported = obj->comp_events_reported;
1326 resp.async_events_reported = obj->async_events_reported;
1327
1328 uverbs_uobject_put(uobj);
1329 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1330 &resp, sizeof resp))
1331 return -EFAULT;
1332
1333 return in_len;
1334 }
1335
1336 static int create_qp(struct ib_uverbs_file *file,
1337 struct ib_udata *ucore,
1338 struct ib_udata *uhw,
1339 struct ib_uverbs_ex_create_qp *cmd,
1340 size_t cmd_sz,
1341 int (*cb)(struct ib_uverbs_file *file,
1342 struct ib_uverbs_ex_create_qp_resp *resp,
1343 struct ib_udata *udata),
1344 void *context)
1345 {
1346 struct ib_uqp_object *obj;
1347 struct ib_device *device;
1348 struct ib_pd *pd = NULL;
1349 struct ib_xrcd *xrcd = NULL;
1350 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT);
1351 struct ib_cq *scq = NULL, *rcq = NULL;
1352 struct ib_srq *srq = NULL;
1353 struct ib_qp *qp;
1354 char *buf;
1355 struct ib_qp_init_attr attr = {};
1356 struct ib_uverbs_ex_create_qp_resp resp;
1357 int ret;
1358 struct ib_rwq_ind_table *ind_tbl = NULL;
1359 bool has_sq = true;
1360
1361 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
1362 return -EPERM;
1363
1364 obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp),
1365 file->ucontext);
1366 if (IS_ERR(obj))
1367 return PTR_ERR(obj);
1368 obj->uxrcd = NULL;
1369 obj->uevent.uobject.user_handle = cmd->user_handle;
1370 mutex_init(&obj->mcast_lock);
1371
1372 if (cmd_sz >= offsetof(typeof(*cmd), rwq_ind_tbl_handle) +
1373 sizeof(cmd->rwq_ind_tbl_handle) &&
1374 (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE)) {
1375 ind_tbl = uobj_get_obj_read(rwq_ind_table,
1376 cmd->rwq_ind_tbl_handle,
1377 file->ucontext);
1378 if (!ind_tbl) {
1379 ret = -EINVAL;
1380 goto err_put;
1381 }
1382
1383 attr.rwq_ind_tbl = ind_tbl;
1384 }
1385
1386 if ((cmd_sz >= offsetof(typeof(*cmd), reserved1) +
1387 sizeof(cmd->reserved1)) && cmd->reserved1) {
1388 ret = -EOPNOTSUPP;
1389 goto err_put;
1390 }
1391
1392 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1393 ret = -EINVAL;
1394 goto err_put;
1395 }
1396
1397 if (ind_tbl && !cmd->max_send_wr)
1398 has_sq = false;
1399
1400 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1401 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->pd_handle,
1402 file->ucontext);
1403
1404 if (IS_ERR(xrcd_uobj)) {
1405 ret = -EINVAL;
1406 goto err_put;
1407 }
1408
1409 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1410 if (!xrcd) {
1411 ret = -EINVAL;
1412 goto err_put;
1413 }
1414 device = xrcd->device;
1415 } else {
1416 if (cmd->qp_type == IB_QPT_XRC_INI) {
1417 cmd->max_recv_wr = 0;
1418 cmd->max_recv_sge = 0;
1419 } else {
1420 if (cmd->is_srq) {
1421 srq = uobj_get_obj_read(srq, cmd->srq_handle,
1422 file->ucontext);
1423 if (!srq || srq->srq_type != IB_SRQT_BASIC) {
1424 ret = -EINVAL;
1425 goto err_put;
1426 }
1427 }
1428
1429 if (!ind_tbl) {
1430 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1431 rcq = uobj_get_obj_read(cq, cmd->recv_cq_handle,
1432 file->ucontext);
1433 if (!rcq) {
1434 ret = -EINVAL;
1435 goto err_put;
1436 }
1437 }
1438 }
1439 }
1440
1441 if (has_sq)
1442 scq = uobj_get_obj_read(cq, cmd->send_cq_handle,
1443 file->ucontext);
1444 if (!ind_tbl)
1445 rcq = rcq ?: scq;
1446 pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext);
1447 if (!pd || (!scq && has_sq)) {
1448 ret = -EINVAL;
1449 goto err_put;
1450 }
1451
1452 device = pd->device;
1453 }
1454
1455 attr.event_handler = ib_uverbs_qp_event_handler;
1456 attr.qp_context = file;
1457 attr.send_cq = scq;
1458 attr.recv_cq = rcq;
1459 attr.srq = srq;
1460 attr.xrcd = xrcd;
1461 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1462 IB_SIGNAL_REQ_WR;
1463 attr.qp_type = cmd->qp_type;
1464 attr.create_flags = 0;
1465
1466 attr.cap.max_send_wr = cmd->max_send_wr;
1467 attr.cap.max_recv_wr = cmd->max_recv_wr;
1468 attr.cap.max_send_sge = cmd->max_send_sge;
1469 attr.cap.max_recv_sge = cmd->max_recv_sge;
1470 attr.cap.max_inline_data = cmd->max_inline_data;
1471
1472 obj->uevent.events_reported = 0;
1473 INIT_LIST_HEAD(&obj->uevent.event_list);
1474 INIT_LIST_HEAD(&obj->mcast_list);
1475
1476 if (cmd_sz >= offsetof(typeof(*cmd), create_flags) +
1477 sizeof(cmd->create_flags))
1478 attr.create_flags = cmd->create_flags;
1479
1480 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1481 IB_QP_CREATE_CROSS_CHANNEL |
1482 IB_QP_CREATE_MANAGED_SEND |
1483 IB_QP_CREATE_MANAGED_RECV |
1484 IB_QP_CREATE_SCATTER_FCS |
1485 IB_QP_CREATE_CVLAN_STRIPPING)) {
1486 ret = -EINVAL;
1487 goto err_put;
1488 }
1489
1490 buf = (void *)cmd + sizeof(*cmd);
1491 if (cmd_sz > sizeof(*cmd))
1492 if (!(buf[0] == 0 && !memcmp(buf, buf + 1,
1493 cmd_sz - sizeof(*cmd) - 1))) {
1494 ret = -EINVAL;
1495 goto err_put;
1496 }
1497
1498 if (cmd->qp_type == IB_QPT_XRC_TGT)
1499 qp = ib_create_qp(pd, &attr);
1500 else
1501 qp = device->create_qp(pd, &attr, uhw);
1502
1503 if (IS_ERR(qp)) {
1504 ret = PTR_ERR(qp);
1505 goto err_put;
1506 }
1507
1508 if (cmd->qp_type != IB_QPT_XRC_TGT) {
1509 ret = ib_create_qp_security(qp, device);
1510 if (ret)
1511 goto err_cb;
1512
1513 qp->real_qp = qp;
1514 qp->device = device;
1515 qp->pd = pd;
1516 qp->send_cq = attr.send_cq;
1517 qp->recv_cq = attr.recv_cq;
1518 qp->srq = attr.srq;
1519 qp->rwq_ind_tbl = ind_tbl;
1520 qp->event_handler = attr.event_handler;
1521 qp->qp_context = attr.qp_context;
1522 qp->qp_type = attr.qp_type;
1523 atomic_set(&qp->usecnt, 0);
1524 atomic_inc(&pd->usecnt);
1525 qp->port = 0;
1526 if (attr.send_cq)
1527 atomic_inc(&attr.send_cq->usecnt);
1528 if (attr.recv_cq)
1529 atomic_inc(&attr.recv_cq->usecnt);
1530 if (attr.srq)
1531 atomic_inc(&attr.srq->usecnt);
1532 if (ind_tbl)
1533 atomic_inc(&ind_tbl->usecnt);
1534 }
1535 qp->uobject = &obj->uevent.uobject;
1536
1537 obj->uevent.uobject.object = qp;
1538
1539 memset(&resp, 0, sizeof resp);
1540 resp.base.qpn = qp->qp_num;
1541 resp.base.qp_handle = obj->uevent.uobject.id;
1542 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1543 resp.base.max_send_sge = attr.cap.max_send_sge;
1544 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1545 resp.base.max_send_wr = attr.cap.max_send_wr;
1546 resp.base.max_inline_data = attr.cap.max_inline_data;
1547
1548 resp.response_length = offsetof(typeof(resp), response_length) +
1549 sizeof(resp.response_length);
1550
1551 ret = cb(file, &resp, ucore);
1552 if (ret)
1553 goto err_cb;
1554
1555 if (xrcd) {
1556 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1557 uobject);
1558 atomic_inc(&obj->uxrcd->refcnt);
1559 uobj_put_read(xrcd_uobj);
1560 }
1561
1562 if (pd)
1563 uobj_put_obj_read(pd);
1564 if (scq)
1565 uobj_put_obj_read(scq);
1566 if (rcq && rcq != scq)
1567 uobj_put_obj_read(rcq);
1568 if (srq)
1569 uobj_put_obj_read(srq);
1570 if (ind_tbl)
1571 uobj_put_obj_read(ind_tbl);
1572
1573 uobj_alloc_commit(&obj->uevent.uobject);
1574
1575 return 0;
1576 err_cb:
1577 ib_destroy_qp(qp);
1578
1579 err_put:
1580 if (!IS_ERR(xrcd_uobj))
1581 uobj_put_read(xrcd_uobj);
1582 if (pd)
1583 uobj_put_obj_read(pd);
1584 if (scq)
1585 uobj_put_obj_read(scq);
1586 if (rcq && rcq != scq)
1587 uobj_put_obj_read(rcq);
1588 if (srq)
1589 uobj_put_obj_read(srq);
1590 if (ind_tbl)
1591 uobj_put_obj_read(ind_tbl);
1592
1593 uobj_alloc_abort(&obj->uevent.uobject);
1594 return ret;
1595 }
1596
1597 static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file,
1598 struct ib_uverbs_ex_create_qp_resp *resp,
1599 struct ib_udata *ucore)
1600 {
1601 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1602 return -EFAULT;
1603
1604 return 0;
1605 }
1606
1607 ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
1608 struct ib_device *ib_dev,
1609 const char __user *buf, int in_len,
1610 int out_len)
1611 {
1612 struct ib_uverbs_create_qp cmd;
1613 struct ib_uverbs_ex_create_qp cmd_ex;
1614 struct ib_udata ucore;
1615 struct ib_udata uhw;
1616 ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp);
1617 int err;
1618
1619 if (out_len < resp_size)
1620 return -ENOSPC;
1621
1622 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1623 return -EFAULT;
1624
1625 INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd),
1626 resp_size);
1627 INIT_UDATA(&uhw, buf + sizeof(cmd),
1628 (unsigned long)cmd.response + resp_size,
1629 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
1630 out_len - resp_size);
1631
1632 memset(&cmd_ex, 0, sizeof(cmd_ex));
1633 cmd_ex.user_handle = cmd.user_handle;
1634 cmd_ex.pd_handle = cmd.pd_handle;
1635 cmd_ex.send_cq_handle = cmd.send_cq_handle;
1636 cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1637 cmd_ex.srq_handle = cmd.srq_handle;
1638 cmd_ex.max_send_wr = cmd.max_send_wr;
1639 cmd_ex.max_recv_wr = cmd.max_recv_wr;
1640 cmd_ex.max_send_sge = cmd.max_send_sge;
1641 cmd_ex.max_recv_sge = cmd.max_recv_sge;
1642 cmd_ex.max_inline_data = cmd.max_inline_data;
1643 cmd_ex.sq_sig_all = cmd.sq_sig_all;
1644 cmd_ex.qp_type = cmd.qp_type;
1645 cmd_ex.is_srq = cmd.is_srq;
1646
1647 err = create_qp(file, &ucore, &uhw, &cmd_ex,
1648 offsetof(typeof(cmd_ex), is_srq) +
1649 sizeof(cmd.is_srq), ib_uverbs_create_qp_cb,
1650 NULL);
1651
1652 if (err)
1653 return err;
1654
1655 return in_len;
1656 }
1657
1658 static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file,
1659 struct ib_uverbs_ex_create_qp_resp *resp,
1660 struct ib_udata *ucore)
1661 {
1662 if (ib_copy_to_udata(ucore, resp, resp->response_length))
1663 return -EFAULT;
1664
1665 return 0;
1666 }
1667
1668 int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file,
1669 struct ib_device *ib_dev,
1670 struct ib_udata *ucore,
1671 struct ib_udata *uhw)
1672 {
1673 struct ib_uverbs_ex_create_qp_resp resp;
1674 struct ib_uverbs_ex_create_qp cmd = {0};
1675 int err;
1676
1677 if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) +
1678 sizeof(cmd.comp_mask)))
1679 return -EINVAL;
1680
1681 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
1682 if (err)
1683 return err;
1684
1685 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1686 return -EINVAL;
1687
1688 if (cmd.reserved)
1689 return -EINVAL;
1690
1691 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
1692 sizeof(resp.response_length)))
1693 return -ENOSPC;
1694
1695 err = create_qp(file, ucore, uhw, &cmd,
1696 min(ucore->inlen, sizeof(cmd)),
1697 ib_uverbs_ex_create_qp_cb, NULL);
1698
1699 if (err)
1700 return err;
1701
1702 return 0;
1703 }
1704
1705 ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file,
1706 struct ib_device *ib_dev,
1707 const char __user *buf, int in_len, int out_len)
1708 {
1709 struct ib_uverbs_open_qp cmd;
1710 struct ib_uverbs_create_qp_resp resp;
1711 struct ib_udata udata;
1712 struct ib_uqp_object *obj;
1713 struct ib_xrcd *xrcd;
1714 struct ib_uobject *uninitialized_var(xrcd_uobj);
1715 struct ib_qp *qp;
1716 struct ib_qp_open_attr attr;
1717 int ret;
1718
1719 if (out_len < sizeof resp)
1720 return -ENOSPC;
1721
1722 if (copy_from_user(&cmd, buf, sizeof cmd))
1723 return -EFAULT;
1724
1725 INIT_UDATA(&udata, buf + sizeof cmd,
1726 (unsigned long) cmd.response + sizeof resp,
1727 in_len - sizeof cmd, out_len - sizeof resp);
1728
1729 obj = (struct ib_uqp_object *)uobj_alloc(uobj_get_type(qp),
1730 file->ucontext);
1731 if (IS_ERR(obj))
1732 return PTR_ERR(obj);
1733
1734 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd.pd_handle,
1735 file->ucontext);
1736 if (IS_ERR(xrcd_uobj)) {
1737 ret = -EINVAL;
1738 goto err_put;
1739 }
1740
1741 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1742 if (!xrcd) {
1743 ret = -EINVAL;
1744 goto err_xrcd;
1745 }
1746
1747 attr.event_handler = ib_uverbs_qp_event_handler;
1748 attr.qp_context = file;
1749 attr.qp_num = cmd.qpn;
1750 attr.qp_type = cmd.qp_type;
1751
1752 obj->uevent.events_reported = 0;
1753 INIT_LIST_HEAD(&obj->uevent.event_list);
1754 INIT_LIST_HEAD(&obj->mcast_list);
1755
1756 qp = ib_open_qp(xrcd, &attr);
1757 if (IS_ERR(qp)) {
1758 ret = PTR_ERR(qp);
1759 goto err_xrcd;
1760 }
1761
1762 obj->uevent.uobject.object = qp;
1763 obj->uevent.uobject.user_handle = cmd.user_handle;
1764
1765 memset(&resp, 0, sizeof resp);
1766 resp.qpn = qp->qp_num;
1767 resp.qp_handle = obj->uevent.uobject.id;
1768
1769 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1770 &resp, sizeof resp)) {
1771 ret = -EFAULT;
1772 goto err_destroy;
1773 }
1774
1775 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1776 atomic_inc(&obj->uxrcd->refcnt);
1777 qp->uobject = &obj->uevent.uobject;
1778 uobj_put_read(xrcd_uobj);
1779
1780
1781 uobj_alloc_commit(&obj->uevent.uobject);
1782
1783 return in_len;
1784
1785 err_destroy:
1786 ib_destroy_qp(qp);
1787 err_xrcd:
1788 uobj_put_read(xrcd_uobj);
1789 err_put:
1790 uobj_alloc_abort(&obj->uevent.uobject);
1791 return ret;
1792 }
1793
1794 ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
1795 struct ib_device *ib_dev,
1796 const char __user *buf, int in_len,
1797 int out_len)
1798 {
1799 struct ib_uverbs_query_qp cmd;
1800 struct ib_uverbs_query_qp_resp resp;
1801 struct ib_qp *qp;
1802 struct ib_qp_attr *attr;
1803 struct ib_qp_init_attr *init_attr;
1804 const struct ib_global_route *grh;
1805 int ret;
1806
1807 if (copy_from_user(&cmd, buf, sizeof cmd))
1808 return -EFAULT;
1809
1810 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1811 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1812 if (!attr || !init_attr) {
1813 ret = -ENOMEM;
1814 goto out;
1815 }
1816
1817 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
1818 if (!qp) {
1819 ret = -EINVAL;
1820 goto out;
1821 }
1822
1823 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1824
1825 uobj_put_obj_read(qp);
1826
1827 if (ret)
1828 goto out;
1829
1830 memset(&resp, 0, sizeof resp);
1831
1832 resp.qp_state = attr->qp_state;
1833 resp.cur_qp_state = attr->cur_qp_state;
1834 resp.path_mtu = attr->path_mtu;
1835 resp.path_mig_state = attr->path_mig_state;
1836 resp.qkey = attr->qkey;
1837 resp.rq_psn = attr->rq_psn;
1838 resp.sq_psn = attr->sq_psn;
1839 resp.dest_qp_num = attr->dest_qp_num;
1840 resp.qp_access_flags = attr->qp_access_flags;
1841 resp.pkey_index = attr->pkey_index;
1842 resp.alt_pkey_index = attr->alt_pkey_index;
1843 resp.sq_draining = attr->sq_draining;
1844 resp.max_rd_atomic = attr->max_rd_atomic;
1845 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1846 resp.min_rnr_timer = attr->min_rnr_timer;
1847 resp.port_num = attr->port_num;
1848 resp.timeout = attr->timeout;
1849 resp.retry_cnt = attr->retry_cnt;
1850 resp.rnr_retry = attr->rnr_retry;
1851 resp.alt_port_num = attr->alt_port_num;
1852 resp.alt_timeout = attr->alt_timeout;
1853
1854 resp.dest.dlid = rdma_ah_get_dlid(&attr->ah_attr);
1855 resp.dest.sl = rdma_ah_get_sl(&attr->ah_attr);
1856 resp.dest.src_path_bits = rdma_ah_get_path_bits(&attr->ah_attr);
1857 resp.dest.static_rate = rdma_ah_get_static_rate(&attr->ah_attr);
1858 resp.dest.is_global = !!(rdma_ah_get_ah_flags(&attr->ah_attr) &
1859 IB_AH_GRH);
1860 if (resp.dest.is_global) {
1861 grh = rdma_ah_read_grh(&attr->ah_attr);
1862 memcpy(resp.dest.dgid, grh->dgid.raw, 16);
1863 resp.dest.flow_label = grh->flow_label;
1864 resp.dest.sgid_index = grh->sgid_index;
1865 resp.dest.hop_limit = grh->hop_limit;
1866 resp.dest.traffic_class = grh->traffic_class;
1867 }
1868 resp.dest.port_num = rdma_ah_get_port_num(&attr->ah_attr);
1869
1870 resp.alt_dest.dlid = rdma_ah_get_dlid(&attr->alt_ah_attr);
1871 resp.alt_dest.sl = rdma_ah_get_sl(&attr->alt_ah_attr);
1872 resp.alt_dest.src_path_bits = rdma_ah_get_path_bits(&attr->alt_ah_attr);
1873 resp.alt_dest.static_rate
1874 = rdma_ah_get_static_rate(&attr->alt_ah_attr);
1875 resp.alt_dest.is_global
1876 = !!(rdma_ah_get_ah_flags(&attr->alt_ah_attr) &
1877 IB_AH_GRH);
1878 if (resp.alt_dest.is_global) {
1879 grh = rdma_ah_read_grh(&attr->alt_ah_attr);
1880 memcpy(resp.alt_dest.dgid, grh->dgid.raw, 16);
1881 resp.alt_dest.flow_label = grh->flow_label;
1882 resp.alt_dest.sgid_index = grh->sgid_index;
1883 resp.alt_dest.hop_limit = grh->hop_limit;
1884 resp.alt_dest.traffic_class = grh->traffic_class;
1885 }
1886 resp.alt_dest.port_num = rdma_ah_get_port_num(&attr->alt_ah_attr);
1887
1888 resp.max_send_wr = init_attr->cap.max_send_wr;
1889 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1890 resp.max_send_sge = init_attr->cap.max_send_sge;
1891 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1892 resp.max_inline_data = init_attr->cap.max_inline_data;
1893 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1894
1895 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1896 &resp, sizeof resp))
1897 ret = -EFAULT;
1898
1899 out:
1900 kfree(attr);
1901 kfree(init_attr);
1902
1903 return ret ? ret : in_len;
1904 }
1905
1906 /* Remove ignored fields set in the attribute mask */
1907 static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1908 {
1909 switch (qp_type) {
1910 case IB_QPT_XRC_INI:
1911 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1912 case IB_QPT_XRC_TGT:
1913 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1914 IB_QP_RNR_RETRY);
1915 default:
1916 return mask;
1917 }
1918 }
1919
1920 static int modify_qp(struct ib_uverbs_file *file,
1921 struct ib_uverbs_ex_modify_qp *cmd, struct ib_udata *udata)
1922 {
1923 struct ib_qp_attr *attr;
1924 struct ib_qp *qp;
1925 int ret;
1926
1927 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1928 if (!attr)
1929 return -ENOMEM;
1930
1931 qp = uobj_get_obj_read(qp, cmd->base.qp_handle, file->ucontext);
1932 if (!qp) {
1933 ret = -EINVAL;
1934 goto out;
1935 }
1936
1937 if ((cmd->base.attr_mask & IB_QP_PORT) &&
1938 !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 if (cmd->base.attr_mask & IB_QP_AV)
1967 attr->ah_attr.type = rdma_ah_find_type(qp->device,
1968 cmd->base.dest.port_num);
1969 if (cmd->base.dest.is_global) {
1970 rdma_ah_set_grh(&attr->ah_attr, NULL,
1971 cmd->base.dest.flow_label,
1972 cmd->base.dest.sgid_index,
1973 cmd->base.dest.hop_limit,
1974 cmd->base.dest.traffic_class);
1975 rdma_ah_set_dgid_raw(&attr->ah_attr, cmd->base.dest.dgid);
1976 } else {
1977 rdma_ah_set_ah_flags(&attr->ah_attr, 0);
1978 }
1979 rdma_ah_set_dlid(&attr->ah_attr, cmd->base.dest.dlid);
1980 rdma_ah_set_sl(&attr->ah_attr, cmd->base.dest.sl);
1981 rdma_ah_set_path_bits(&attr->ah_attr, cmd->base.dest.src_path_bits);
1982 rdma_ah_set_static_rate(&attr->ah_attr, cmd->base.dest.static_rate);
1983 rdma_ah_set_port_num(&attr->ah_attr,
1984 cmd->base.dest.port_num);
1985
1986 if (cmd->base.attr_mask & IB_QP_ALT_PATH)
1987 attr->alt_ah_attr.type =
1988 rdma_ah_find_type(qp->device, cmd->base.dest.port_num);
1989 if (cmd->base.alt_dest.is_global) {
1990 rdma_ah_set_grh(&attr->alt_ah_attr, NULL,
1991 cmd->base.alt_dest.flow_label,
1992 cmd->base.alt_dest.sgid_index,
1993 cmd->base.alt_dest.hop_limit,
1994 cmd->base.alt_dest.traffic_class);
1995 rdma_ah_set_dgid_raw(&attr->alt_ah_attr,
1996 cmd->base.alt_dest.dgid);
1997 } else {
1998 rdma_ah_set_ah_flags(&attr->alt_ah_attr, 0);
1999 }
2000
2001 rdma_ah_set_dlid(&attr->alt_ah_attr, cmd->base.alt_dest.dlid);
2002 rdma_ah_set_sl(&attr->alt_ah_attr, cmd->base.alt_dest.sl);
2003 rdma_ah_set_path_bits(&attr->alt_ah_attr,
2004 cmd->base.alt_dest.src_path_bits);
2005 rdma_ah_set_static_rate(&attr->alt_ah_attr,
2006 cmd->base.alt_dest.static_rate);
2007 rdma_ah_set_port_num(&attr->alt_ah_attr,
2008 cmd->base.alt_dest.port_num);
2009
2010 ret = ib_modify_qp_with_udata(qp, attr,
2011 modify_qp_mask(qp->qp_type,
2012 cmd->base.attr_mask),
2013 udata);
2014
2015 release_qp:
2016 uobj_put_obj_read(qp);
2017 out:
2018 kfree(attr);
2019
2020 return ret;
2021 }
2022
2023 ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
2024 struct ib_device *ib_dev,
2025 const char __user *buf, int in_len,
2026 int out_len)
2027 {
2028 struct ib_uverbs_ex_modify_qp cmd = {};
2029 struct ib_udata udata;
2030 int ret;
2031
2032 if (copy_from_user(&cmd.base, buf, sizeof(cmd.base)))
2033 return -EFAULT;
2034
2035 if (cmd.base.attr_mask &
2036 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1))
2037 return -EOPNOTSUPP;
2038
2039 INIT_UDATA(&udata, buf + sizeof(cmd.base), NULL,
2040 in_len - sizeof(cmd.base), out_len);
2041
2042 ret = modify_qp(file, &cmd, &udata);
2043 if (ret)
2044 return ret;
2045
2046 return in_len;
2047 }
2048
2049 int ib_uverbs_ex_modify_qp(struct ib_uverbs_file *file,
2050 struct ib_device *ib_dev,
2051 struct ib_udata *ucore,
2052 struct ib_udata *uhw)
2053 {
2054 struct ib_uverbs_ex_modify_qp cmd = {};
2055 int ret;
2056
2057 /*
2058 * Last bit is reserved for extending the attr_mask by
2059 * using another field.
2060 */
2061 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
2062
2063 if (ucore->inlen < sizeof(cmd.base))
2064 return -EINVAL;
2065
2066 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
2067 if (ret)
2068 return ret;
2069
2070 if (cmd.base.attr_mask &
2071 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1))
2072 return -EOPNOTSUPP;
2073
2074 if (ucore->inlen > sizeof(cmd)) {
2075 if (ib_is_udata_cleared(ucore, sizeof(cmd),
2076 ucore->inlen - sizeof(cmd)))
2077 return -EOPNOTSUPP;
2078 }
2079
2080 ret = modify_qp(file, &cmd, uhw);
2081
2082 return ret;
2083 }
2084
2085 ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
2086 struct ib_device *ib_dev,
2087 const char __user *buf, int in_len,
2088 int out_len)
2089 {
2090 struct ib_uverbs_destroy_qp cmd;
2091 struct ib_uverbs_destroy_qp_resp resp;
2092 struct ib_uobject *uobj;
2093 struct ib_uqp_object *obj;
2094 int ret = -EINVAL;
2095
2096 if (copy_from_user(&cmd, buf, sizeof cmd))
2097 return -EFAULT;
2098
2099 memset(&resp, 0, sizeof resp);
2100
2101 uobj = uobj_get_write(uobj_get_type(qp), cmd.qp_handle,
2102 file->ucontext);
2103 if (IS_ERR(uobj))
2104 return PTR_ERR(uobj);
2105
2106 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
2107 /*
2108 * Make sure we don't free the memory in remove_commit as we still
2109 * needs the uobject memory to create the response.
2110 */
2111 uverbs_uobject_get(uobj);
2112
2113 ret = uobj_remove_commit(uobj);
2114 if (ret) {
2115 uverbs_uobject_put(uobj);
2116 return ret;
2117 }
2118
2119 resp.events_reported = obj->uevent.events_reported;
2120 uverbs_uobject_put(uobj);
2121
2122 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2123 &resp, sizeof resp))
2124 return -EFAULT;
2125
2126 return in_len;
2127 }
2128
2129 static void *alloc_wr(size_t wr_size, __u32 num_sge)
2130 {
2131 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) /
2132 sizeof (struct ib_sge))
2133 return NULL;
2134
2135 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) +
2136 num_sge * sizeof (struct ib_sge), GFP_KERNEL);
2137 }
2138
2139 ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
2140 struct ib_device *ib_dev,
2141 const char __user *buf, int in_len,
2142 int out_len)
2143 {
2144 struct ib_uverbs_post_send cmd;
2145 struct ib_uverbs_post_send_resp resp;
2146 struct ib_uverbs_send_wr *user_wr;
2147 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
2148 struct ib_qp *qp;
2149 int i, sg_ind;
2150 int is_ud;
2151 ssize_t ret = -EINVAL;
2152 size_t next_size;
2153
2154 if (copy_from_user(&cmd, buf, sizeof cmd))
2155 return -EFAULT;
2156
2157 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
2158 cmd.sge_count * sizeof (struct ib_uverbs_sge))
2159 return -EINVAL;
2160
2161 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
2162 return -EINVAL;
2163
2164 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2165 if (!user_wr)
2166 return -ENOMEM;
2167
2168 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2169 if (!qp)
2170 goto out;
2171
2172 is_ud = qp->qp_type == IB_QPT_UD;
2173 sg_ind = 0;
2174 last = NULL;
2175 for (i = 0; i < cmd.wr_count; ++i) {
2176 if (copy_from_user(user_wr,
2177 buf + sizeof cmd + i * cmd.wqe_size,
2178 cmd.wqe_size)) {
2179 ret = -EFAULT;
2180 goto out_put;
2181 }
2182
2183 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2184 ret = -EINVAL;
2185 goto out_put;
2186 }
2187
2188 if (is_ud) {
2189 struct ib_ud_wr *ud;
2190
2191 if (user_wr->opcode != IB_WR_SEND &&
2192 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2193 ret = -EINVAL;
2194 goto out_put;
2195 }
2196
2197 next_size = sizeof(*ud);
2198 ud = alloc_wr(next_size, user_wr->num_sge);
2199 if (!ud) {
2200 ret = -ENOMEM;
2201 goto out_put;
2202 }
2203
2204 ud->ah = uobj_get_obj_read(ah, user_wr->wr.ud.ah,
2205 file->ucontext);
2206 if (!ud->ah) {
2207 kfree(ud);
2208 ret = -EINVAL;
2209 goto out_put;
2210 }
2211 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2212 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2213
2214 next = &ud->wr;
2215 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2216 user_wr->opcode == IB_WR_RDMA_WRITE ||
2217 user_wr->opcode == IB_WR_RDMA_READ) {
2218 struct ib_rdma_wr *rdma;
2219
2220 next_size = sizeof(*rdma);
2221 rdma = alloc_wr(next_size, user_wr->num_sge);
2222 if (!rdma) {
2223 ret = -ENOMEM;
2224 goto out_put;
2225 }
2226
2227 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2228 rdma->rkey = user_wr->wr.rdma.rkey;
2229
2230 next = &rdma->wr;
2231 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2232 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2233 struct ib_atomic_wr *atomic;
2234
2235 next_size = sizeof(*atomic);
2236 atomic = alloc_wr(next_size, user_wr->num_sge);
2237 if (!atomic) {
2238 ret = -ENOMEM;
2239 goto out_put;
2240 }
2241
2242 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2243 atomic->compare_add = user_wr->wr.atomic.compare_add;
2244 atomic->swap = user_wr->wr.atomic.swap;
2245 atomic->rkey = user_wr->wr.atomic.rkey;
2246
2247 next = &atomic->wr;
2248 } else if (user_wr->opcode == IB_WR_SEND ||
2249 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2250 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2251 next_size = sizeof(*next);
2252 next = alloc_wr(next_size, user_wr->num_sge);
2253 if (!next) {
2254 ret = -ENOMEM;
2255 goto out_put;
2256 }
2257 } else {
2258 ret = -EINVAL;
2259 goto out_put;
2260 }
2261
2262 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2263 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2264 next->ex.imm_data =
2265 (__be32 __force) user_wr->ex.imm_data;
2266 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2267 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2268 }
2269
2270 if (!last)
2271 wr = next;
2272 else
2273 last->next = next;
2274 last = next;
2275
2276 next->next = NULL;
2277 next->wr_id = user_wr->wr_id;
2278 next->num_sge = user_wr->num_sge;
2279 next->opcode = user_wr->opcode;
2280 next->send_flags = user_wr->send_flags;
2281
2282 if (next->num_sge) {
2283 next->sg_list = (void *) next +
2284 ALIGN(next_size, sizeof(struct ib_sge));
2285 if (copy_from_user(next->sg_list,
2286 buf + sizeof cmd +
2287 cmd.wr_count * cmd.wqe_size +
2288 sg_ind * sizeof (struct ib_sge),
2289 next->num_sge * sizeof (struct ib_sge))) {
2290 ret = -EFAULT;
2291 goto out_put;
2292 }
2293 sg_ind += next->num_sge;
2294 } else
2295 next->sg_list = NULL;
2296 }
2297
2298 resp.bad_wr = 0;
2299 ret = qp->device->post_send(qp->real_qp, wr, &bad_wr);
2300 if (ret)
2301 for (next = wr; next; next = next->next) {
2302 ++resp.bad_wr;
2303 if (next == bad_wr)
2304 break;
2305 }
2306
2307 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2308 &resp, sizeof resp))
2309 ret = -EFAULT;
2310
2311 out_put:
2312 uobj_put_obj_read(qp);
2313
2314 while (wr) {
2315 if (is_ud && ud_wr(wr)->ah)
2316 uobj_put_obj_read(ud_wr(wr)->ah);
2317 next = wr->next;
2318 kfree(wr);
2319 wr = next;
2320 }
2321
2322 out:
2323 kfree(user_wr);
2324
2325 return ret ? ret : in_len;
2326 }
2327
2328 static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
2329 int in_len,
2330 u32 wr_count,
2331 u32 sge_count,
2332 u32 wqe_size)
2333 {
2334 struct ib_uverbs_recv_wr *user_wr;
2335 struct ib_recv_wr *wr = NULL, *last, *next;
2336 int sg_ind;
2337 int i;
2338 int ret;
2339
2340 if (in_len < wqe_size * wr_count +
2341 sge_count * sizeof (struct ib_uverbs_sge))
2342 return ERR_PTR(-EINVAL);
2343
2344 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
2345 return ERR_PTR(-EINVAL);
2346
2347 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2348 if (!user_wr)
2349 return ERR_PTR(-ENOMEM);
2350
2351 sg_ind = 0;
2352 last = NULL;
2353 for (i = 0; i < wr_count; ++i) {
2354 if (copy_from_user(user_wr, buf + i * wqe_size,
2355 wqe_size)) {
2356 ret = -EFAULT;
2357 goto err;
2358 }
2359
2360 if (user_wr->num_sge + sg_ind > sge_count) {
2361 ret = -EINVAL;
2362 goto err;
2363 }
2364
2365 if (user_wr->num_sge >=
2366 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) /
2367 sizeof (struct ib_sge)) {
2368 ret = -EINVAL;
2369 goto err;
2370 }
2371
2372 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2373 user_wr->num_sge * sizeof (struct ib_sge),
2374 GFP_KERNEL);
2375 if (!next) {
2376 ret = -ENOMEM;
2377 goto err;
2378 }
2379
2380 if (!last)
2381 wr = next;
2382 else
2383 last->next = next;
2384 last = next;
2385
2386 next->next = NULL;
2387 next->wr_id = user_wr->wr_id;
2388 next->num_sge = user_wr->num_sge;
2389
2390 if (next->num_sge) {
2391 next->sg_list = (void *) next +
2392 ALIGN(sizeof *next, sizeof (struct ib_sge));
2393 if (copy_from_user(next->sg_list,
2394 buf + wr_count * wqe_size +
2395 sg_ind * sizeof (struct ib_sge),
2396 next->num_sge * sizeof (struct ib_sge))) {
2397 ret = -EFAULT;
2398 goto err;
2399 }
2400 sg_ind += next->num_sge;
2401 } else
2402 next->sg_list = NULL;
2403 }
2404
2405 kfree(user_wr);
2406 return wr;
2407
2408 err:
2409 kfree(user_wr);
2410
2411 while (wr) {
2412 next = wr->next;
2413 kfree(wr);
2414 wr = next;
2415 }
2416
2417 return ERR_PTR(ret);
2418 }
2419
2420 ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
2421 struct ib_device *ib_dev,
2422 const char __user *buf, int in_len,
2423 int out_len)
2424 {
2425 struct ib_uverbs_post_recv cmd;
2426 struct ib_uverbs_post_recv_resp resp;
2427 struct ib_recv_wr *wr, *next, *bad_wr;
2428 struct ib_qp *qp;
2429 ssize_t ret = -EINVAL;
2430
2431 if (copy_from_user(&cmd, buf, sizeof cmd))
2432 return -EFAULT;
2433
2434 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2435 in_len - sizeof cmd, cmd.wr_count,
2436 cmd.sge_count, cmd.wqe_size);
2437 if (IS_ERR(wr))
2438 return PTR_ERR(wr);
2439
2440 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2441 if (!qp)
2442 goto out;
2443
2444 resp.bad_wr = 0;
2445 ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr);
2446
2447 uobj_put_obj_read(qp);
2448 if (ret) {
2449 for (next = wr; next; next = next->next) {
2450 ++resp.bad_wr;
2451 if (next == bad_wr)
2452 break;
2453 }
2454 }
2455
2456 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2457 &resp, sizeof resp))
2458 ret = -EFAULT;
2459
2460 out:
2461 while (wr) {
2462 next = wr->next;
2463 kfree(wr);
2464 wr = next;
2465 }
2466
2467 return ret ? ret : in_len;
2468 }
2469
2470 ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
2471 struct ib_device *ib_dev,
2472 const char __user *buf, int in_len,
2473 int out_len)
2474 {
2475 struct ib_uverbs_post_srq_recv cmd;
2476 struct ib_uverbs_post_srq_recv_resp resp;
2477 struct ib_recv_wr *wr, *next, *bad_wr;
2478 struct ib_srq *srq;
2479 ssize_t ret = -EINVAL;
2480
2481 if (copy_from_user(&cmd, buf, sizeof cmd))
2482 return -EFAULT;
2483
2484 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2485 in_len - sizeof cmd, cmd.wr_count,
2486 cmd.sge_count, cmd.wqe_size);
2487 if (IS_ERR(wr))
2488 return PTR_ERR(wr);
2489
2490 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext);
2491 if (!srq)
2492 goto out;
2493
2494 resp.bad_wr = 0;
2495 ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
2496
2497 uobj_put_obj_read(srq);
2498
2499 if (ret)
2500 for (next = wr; next; next = next->next) {
2501 ++resp.bad_wr;
2502 if (next == bad_wr)
2503 break;
2504 }
2505
2506 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2507 &resp, sizeof resp))
2508 ret = -EFAULT;
2509
2510 out:
2511 while (wr) {
2512 next = wr->next;
2513 kfree(wr);
2514 wr = next;
2515 }
2516
2517 return ret ? ret : in_len;
2518 }
2519
2520 ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
2521 struct ib_device *ib_dev,
2522 const char __user *buf, int in_len,
2523 int out_len)
2524 {
2525 struct ib_uverbs_create_ah cmd;
2526 struct ib_uverbs_create_ah_resp resp;
2527 struct ib_uobject *uobj;
2528 struct ib_pd *pd;
2529 struct ib_ah *ah;
2530 struct rdma_ah_attr attr;
2531 int ret;
2532 struct ib_udata udata;
2533 u8 *dmac;
2534
2535 if (out_len < sizeof resp)
2536 return -ENOSPC;
2537
2538 if (copy_from_user(&cmd, buf, sizeof cmd))
2539 return -EFAULT;
2540
2541 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num))
2542 return -EINVAL;
2543
2544 INIT_UDATA(&udata, buf + sizeof(cmd),
2545 (unsigned long)cmd.response + sizeof(resp),
2546 in_len - sizeof(cmd), out_len - sizeof(resp));
2547
2548 uobj = uobj_alloc(uobj_get_type(ah), file->ucontext);
2549 if (IS_ERR(uobj))
2550 return PTR_ERR(uobj);
2551
2552 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext);
2553 if (!pd) {
2554 ret = -EINVAL;
2555 goto err;
2556 }
2557
2558 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2559 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2560 rdma_ah_set_sl(&attr, cmd.attr.sl);
2561 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2562 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2563 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2564
2565 if (cmd.attr.is_global) {
2566 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2567 cmd.attr.grh.sgid_index,
2568 cmd.attr.grh.hop_limit,
2569 cmd.attr.grh.traffic_class);
2570 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2571 } else {
2572 rdma_ah_set_ah_flags(&attr, 0);
2573 }
2574 dmac = rdma_ah_retrieve_dmac(&attr);
2575 if (dmac)
2576 memset(dmac, 0, ETH_ALEN);
2577
2578 ah = pd->device->create_ah(pd, &attr, &udata);
2579
2580 if (IS_ERR(ah)) {
2581 ret = PTR_ERR(ah);
2582 goto err_put;
2583 }
2584
2585 ah->device = pd->device;
2586 ah->pd = pd;
2587 atomic_inc(&pd->usecnt);
2588 ah->uobject = uobj;
2589 uobj->user_handle = cmd.user_handle;
2590 uobj->object = ah;
2591
2592 resp.ah_handle = uobj->id;
2593
2594 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2595 &resp, sizeof resp)) {
2596 ret = -EFAULT;
2597 goto err_copy;
2598 }
2599
2600 uobj_put_obj_read(pd);
2601 uobj_alloc_commit(uobj);
2602
2603 return in_len;
2604
2605 err_copy:
2606 rdma_destroy_ah(ah);
2607
2608 err_put:
2609 uobj_put_obj_read(pd);
2610
2611 err:
2612 uobj_alloc_abort(uobj);
2613 return ret;
2614 }
2615
2616 ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
2617 struct ib_device *ib_dev,
2618 const char __user *buf, int in_len, int out_len)
2619 {
2620 struct ib_uverbs_destroy_ah cmd;
2621 struct ib_uobject *uobj;
2622 int ret;
2623
2624 if (copy_from_user(&cmd, buf, sizeof cmd))
2625 return -EFAULT;
2626
2627 uobj = uobj_get_write(uobj_get_type(ah), cmd.ah_handle,
2628 file->ucontext);
2629 if (IS_ERR(uobj))
2630 return PTR_ERR(uobj);
2631
2632 ret = uobj_remove_commit(uobj);
2633 return ret ?: in_len;
2634 }
2635
2636 ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
2637 struct ib_device *ib_dev,
2638 const char __user *buf, int in_len,
2639 int out_len)
2640 {
2641 struct ib_uverbs_attach_mcast cmd;
2642 struct ib_qp *qp;
2643 struct ib_uqp_object *obj;
2644 struct ib_uverbs_mcast_entry *mcast;
2645 int ret;
2646
2647 if (copy_from_user(&cmd, buf, sizeof cmd))
2648 return -EFAULT;
2649
2650 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2651 if (!qp)
2652 return -EINVAL;
2653
2654 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2655
2656 mutex_lock(&obj->mcast_lock);
2657 list_for_each_entry(mcast, &obj->mcast_list, list)
2658 if (cmd.mlid == mcast->lid &&
2659 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2660 ret = 0;
2661 goto out_put;
2662 }
2663
2664 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2665 if (!mcast) {
2666 ret = -ENOMEM;
2667 goto out_put;
2668 }
2669
2670 mcast->lid = cmd.mlid;
2671 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2672
2673 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2674 if (!ret)
2675 list_add_tail(&mcast->list, &obj->mcast_list);
2676 else
2677 kfree(mcast);
2678
2679 out_put:
2680 mutex_unlock(&obj->mcast_lock);
2681 uobj_put_obj_read(qp);
2682
2683 return ret ? ret : in_len;
2684 }
2685
2686 ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
2687 struct ib_device *ib_dev,
2688 const char __user *buf, int in_len,
2689 int out_len)
2690 {
2691 struct ib_uverbs_detach_mcast cmd;
2692 struct ib_uqp_object *obj;
2693 struct ib_qp *qp;
2694 struct ib_uverbs_mcast_entry *mcast;
2695 int ret = -EINVAL;
2696 bool found = false;
2697
2698 if (copy_from_user(&cmd, buf, sizeof cmd))
2699 return -EFAULT;
2700
2701 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
2702 if (!qp)
2703 return -EINVAL;
2704
2705 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2706 mutex_lock(&obj->mcast_lock);
2707
2708 list_for_each_entry(mcast, &obj->mcast_list, list)
2709 if (cmd.mlid == mcast->lid &&
2710 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2711 list_del(&mcast->list);
2712 kfree(mcast);
2713 found = true;
2714 break;
2715 }
2716
2717 if (!found) {
2718 ret = -EINVAL;
2719 goto out_put;
2720 }
2721
2722 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2723
2724 out_put:
2725 mutex_unlock(&obj->mcast_lock);
2726 uobj_put_obj_read(qp);
2727 return ret ? ret : in_len;
2728 }
2729
2730 static int kern_spec_to_ib_spec_action(struct ib_uverbs_flow_spec *kern_spec,
2731 union ib_flow_spec *ib_spec)
2732 {
2733 ib_spec->type = kern_spec->type;
2734 switch (ib_spec->type) {
2735 case IB_FLOW_SPEC_ACTION_TAG:
2736 if (kern_spec->flow_tag.size !=
2737 sizeof(struct ib_uverbs_flow_spec_action_tag))
2738 return -EINVAL;
2739
2740 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2741 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2742 break;
2743 case IB_FLOW_SPEC_ACTION_DROP:
2744 if (kern_spec->drop.size !=
2745 sizeof(struct ib_uverbs_flow_spec_action_drop))
2746 return -EINVAL;
2747
2748 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2749 break;
2750 default:
2751 return -EINVAL;
2752 }
2753 return 0;
2754 }
2755
2756 static size_t kern_spec_filter_sz(struct ib_uverbs_flow_spec_hdr *spec)
2757 {
2758 /* Returns user space filter size, includes padding */
2759 return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2;
2760 }
2761
2762 static ssize_t spec_filter_size(void *kern_spec_filter, u16 kern_filter_size,
2763 u16 ib_real_filter_sz)
2764 {
2765 /*
2766 * User space filter structures must be 64 bit aligned, otherwise this
2767 * may pass, but we won't handle additional new attributes.
2768 */
2769
2770 if (kern_filter_size > ib_real_filter_sz) {
2771 if (memchr_inv(kern_spec_filter +
2772 ib_real_filter_sz, 0,
2773 kern_filter_size - ib_real_filter_sz))
2774 return -EINVAL;
2775 return ib_real_filter_sz;
2776 }
2777 return kern_filter_size;
2778 }
2779
2780 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2781 union ib_flow_spec *ib_spec)
2782 {
2783 ssize_t actual_filter_sz;
2784 ssize_t kern_filter_sz;
2785 ssize_t ib_filter_sz;
2786 void *kern_spec_mask;
2787 void *kern_spec_val;
2788
2789 if (kern_spec->reserved)
2790 return -EINVAL;
2791
2792 ib_spec->type = kern_spec->type;
2793
2794 kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr);
2795 /* User flow spec size must be aligned to 4 bytes */
2796 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2797 return -EINVAL;
2798
2799 kern_spec_val = (void *)kern_spec +
2800 sizeof(struct ib_uverbs_flow_spec_hdr);
2801 kern_spec_mask = kern_spec_val + kern_filter_sz;
2802 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2803 return -EINVAL;
2804
2805 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2806 case IB_FLOW_SPEC_ETH:
2807 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2808 actual_filter_sz = spec_filter_size(kern_spec_mask,
2809 kern_filter_sz,
2810 ib_filter_sz);
2811 if (actual_filter_sz <= 0)
2812 return -EINVAL;
2813 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2814 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2815 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2816 break;
2817 case IB_FLOW_SPEC_IPV4:
2818 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz);
2819 actual_filter_sz = spec_filter_size(kern_spec_mask,
2820 kern_filter_sz,
2821 ib_filter_sz);
2822 if (actual_filter_sz <= 0)
2823 return -EINVAL;
2824 ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
2825 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2826 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2827 break;
2828 case IB_FLOW_SPEC_IPV6:
2829 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz);
2830 actual_filter_sz = spec_filter_size(kern_spec_mask,
2831 kern_filter_sz,
2832 ib_filter_sz);
2833 if (actual_filter_sz <= 0)
2834 return -EINVAL;
2835 ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
2836 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2837 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2838
2839 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2840 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2841 return -EINVAL;
2842 break;
2843 case IB_FLOW_SPEC_TCP:
2844 case IB_FLOW_SPEC_UDP:
2845 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
2846 actual_filter_sz = spec_filter_size(kern_spec_mask,
2847 kern_filter_sz,
2848 ib_filter_sz);
2849 if (actual_filter_sz <= 0)
2850 return -EINVAL;
2851 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2852 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2853 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2854 break;
2855 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2856 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz);
2857 actual_filter_sz = spec_filter_size(kern_spec_mask,
2858 kern_filter_sz,
2859 ib_filter_sz);
2860 if (actual_filter_sz <= 0)
2861 return -EINVAL;
2862 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2863 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2864 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2865
2866 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2867 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2868 return -EINVAL;
2869 break;
2870 default:
2871 return -EINVAL;
2872 }
2873 return 0;
2874 }
2875
2876 static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
2877 union ib_flow_spec *ib_spec)
2878 {
2879 if (kern_spec->reserved)
2880 return -EINVAL;
2881
2882 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2883 return kern_spec_to_ib_spec_action(kern_spec, ib_spec);
2884 else
2885 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2886 }
2887
2888 int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file,
2889 struct ib_device *ib_dev,
2890 struct ib_udata *ucore,
2891 struct ib_udata *uhw)
2892 {
2893 struct ib_uverbs_ex_create_wq cmd = {};
2894 struct ib_uverbs_ex_create_wq_resp resp = {};
2895 struct ib_uwq_object *obj;
2896 int err = 0;
2897 struct ib_cq *cq;
2898 struct ib_pd *pd;
2899 struct ib_wq *wq;
2900 struct ib_wq_init_attr wq_init_attr = {};
2901 size_t required_cmd_sz;
2902 size_t required_resp_len;
2903
2904 required_cmd_sz = offsetof(typeof(cmd), max_sge) + sizeof(cmd.max_sge);
2905 required_resp_len = offsetof(typeof(resp), wqn) + sizeof(resp.wqn);
2906
2907 if (ucore->inlen < required_cmd_sz)
2908 return -EINVAL;
2909
2910 if (ucore->outlen < required_resp_len)
2911 return -ENOSPC;
2912
2913 if (ucore->inlen > sizeof(cmd) &&
2914 !ib_is_udata_cleared(ucore, sizeof(cmd),
2915 ucore->inlen - sizeof(cmd)))
2916 return -EOPNOTSUPP;
2917
2918 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
2919 if (err)
2920 return err;
2921
2922 if (cmd.comp_mask)
2923 return -EOPNOTSUPP;
2924
2925 obj = (struct ib_uwq_object *)uobj_alloc(uobj_get_type(wq),
2926 file->ucontext);
2927 if (IS_ERR(obj))
2928 return PTR_ERR(obj);
2929
2930 pd = uobj_get_obj_read(pd, cmd.pd_handle, file->ucontext);
2931 if (!pd) {
2932 err = -EINVAL;
2933 goto err_uobj;
2934 }
2935
2936 cq = uobj_get_obj_read(cq, cmd.cq_handle, file->ucontext);
2937 if (!cq) {
2938 err = -EINVAL;
2939 goto err_put_pd;
2940 }
2941
2942 wq_init_attr.cq = cq;
2943 wq_init_attr.max_sge = cmd.max_sge;
2944 wq_init_attr.max_wr = cmd.max_wr;
2945 wq_init_attr.wq_context = file;
2946 wq_init_attr.wq_type = cmd.wq_type;
2947 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2948 if (ucore->inlen >= (offsetof(typeof(cmd), create_flags) +
2949 sizeof(cmd.create_flags)))
2950 wq_init_attr.create_flags = cmd.create_flags;
2951 obj->uevent.events_reported = 0;
2952 INIT_LIST_HEAD(&obj->uevent.event_list);
2953 wq = pd->device->create_wq(pd, &wq_init_attr, uhw);
2954 if (IS_ERR(wq)) {
2955 err = PTR_ERR(wq);
2956 goto err_put_cq;
2957 }
2958
2959 wq->uobject = &obj->uevent.uobject;
2960 obj->uevent.uobject.object = wq;
2961 wq->wq_type = wq_init_attr.wq_type;
2962 wq->cq = cq;
2963 wq->pd = pd;
2964 wq->device = pd->device;
2965 wq->wq_context = wq_init_attr.wq_context;
2966 atomic_set(&wq->usecnt, 0);
2967 atomic_inc(&pd->usecnt);
2968 atomic_inc(&cq->usecnt);
2969 wq->uobject = &obj->uevent.uobject;
2970 obj->uevent.uobject.object = wq;
2971
2972 memset(&resp, 0, sizeof(resp));
2973 resp.wq_handle = obj->uevent.uobject.id;
2974 resp.max_sge = wq_init_attr.max_sge;
2975 resp.max_wr = wq_init_attr.max_wr;
2976 resp.wqn = wq->wq_num;
2977 resp.response_length = required_resp_len;
2978 err = ib_copy_to_udata(ucore,
2979 &resp, resp.response_length);
2980 if (err)
2981 goto err_copy;
2982
2983 uobj_put_obj_read(pd);
2984 uobj_put_obj_read(cq);
2985 uobj_alloc_commit(&obj->uevent.uobject);
2986 return 0;
2987
2988 err_copy:
2989 ib_destroy_wq(wq);
2990 err_put_cq:
2991 uobj_put_obj_read(cq);
2992 err_put_pd:
2993 uobj_put_obj_read(pd);
2994 err_uobj:
2995 uobj_alloc_abort(&obj->uevent.uobject);
2996
2997 return err;
2998 }
2999
3000 int ib_uverbs_ex_destroy_wq(struct ib_uverbs_file *file,
3001 struct ib_device *ib_dev,
3002 struct ib_udata *ucore,
3003 struct ib_udata *uhw)
3004 {
3005 struct ib_uverbs_ex_destroy_wq cmd = {};
3006 struct ib_uverbs_ex_destroy_wq_resp resp = {};
3007 struct ib_uobject *uobj;
3008 struct ib_uwq_object *obj;
3009 size_t required_cmd_sz;
3010 size_t required_resp_len;
3011 int ret;
3012
3013 required_cmd_sz = offsetof(typeof(cmd), wq_handle) + sizeof(cmd.wq_handle);
3014 required_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
3015
3016 if (ucore->inlen < required_cmd_sz)
3017 return -EINVAL;
3018
3019 if (ucore->outlen < required_resp_len)
3020 return -ENOSPC;
3021
3022 if (ucore->inlen > sizeof(cmd) &&
3023 !ib_is_udata_cleared(ucore, sizeof(cmd),
3024 ucore->inlen - sizeof(cmd)))
3025 return -EOPNOTSUPP;
3026
3027 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3028 if (ret)
3029 return ret;
3030
3031 if (cmd.comp_mask)
3032 return -EOPNOTSUPP;
3033
3034 resp.response_length = required_resp_len;
3035 uobj = uobj_get_write(uobj_get_type(wq), cmd.wq_handle,
3036 file->ucontext);
3037 if (IS_ERR(uobj))
3038 return PTR_ERR(uobj);
3039
3040 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
3041 /*
3042 * Make sure we don't free the memory in remove_commit as we still
3043 * needs the uobject memory to create the response.
3044 */
3045 uverbs_uobject_get(uobj);
3046
3047 ret = uobj_remove_commit(uobj);
3048 resp.events_reported = obj->uevent.events_reported;
3049 uverbs_uobject_put(uobj);
3050 if (ret)
3051 return ret;
3052
3053 return ib_copy_to_udata(ucore, &resp, resp.response_length);
3054 }
3055
3056 int ib_uverbs_ex_modify_wq(struct ib_uverbs_file *file,
3057 struct ib_device *ib_dev,
3058 struct ib_udata *ucore,
3059 struct ib_udata *uhw)
3060 {
3061 struct ib_uverbs_ex_modify_wq cmd = {};
3062 struct ib_wq *wq;
3063 struct ib_wq_attr wq_attr = {};
3064 size_t required_cmd_sz;
3065 int ret;
3066
3067 required_cmd_sz = offsetof(typeof(cmd), curr_wq_state) + sizeof(cmd.curr_wq_state);
3068 if (ucore->inlen < required_cmd_sz)
3069 return -EINVAL;
3070
3071 if (ucore->inlen > sizeof(cmd) &&
3072 !ib_is_udata_cleared(ucore, sizeof(cmd),
3073 ucore->inlen - sizeof(cmd)))
3074 return -EOPNOTSUPP;
3075
3076 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3077 if (ret)
3078 return ret;
3079
3080 if (!cmd.attr_mask)
3081 return -EINVAL;
3082
3083 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3084 return -EINVAL;
3085
3086 wq = uobj_get_obj_read(wq, cmd.wq_handle, file->ucontext);
3087 if (!wq)
3088 return -EINVAL;
3089
3090 wq_attr.curr_wq_state = cmd.curr_wq_state;
3091 wq_attr.wq_state = cmd.wq_state;
3092 if (cmd.attr_mask & IB_WQ_FLAGS) {
3093 wq_attr.flags = cmd.flags;
3094 wq_attr.flags_mask = cmd.flags_mask;
3095 }
3096 ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, uhw);
3097 uobj_put_obj_read(wq);
3098 return ret;
3099 }
3100
3101 int ib_uverbs_ex_create_rwq_ind_table(struct ib_uverbs_file *file,
3102 struct ib_device *ib_dev,
3103 struct ib_udata *ucore,
3104 struct ib_udata *uhw)
3105 {
3106 struct ib_uverbs_ex_create_rwq_ind_table cmd = {};
3107 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3108 struct ib_uobject *uobj;
3109 int err = 0;
3110 struct ib_rwq_ind_table_init_attr init_attr = {};
3111 struct ib_rwq_ind_table *rwq_ind_tbl;
3112 struct ib_wq **wqs = NULL;
3113 u32 *wqs_handles = NULL;
3114 struct ib_wq *wq = NULL;
3115 int i, j, num_read_wqs;
3116 u32 num_wq_handles;
3117 u32 expected_in_size;
3118 size_t required_cmd_sz_header;
3119 size_t required_resp_len;
3120
3121 required_cmd_sz_header = offsetof(typeof(cmd), log_ind_tbl_size) + sizeof(cmd.log_ind_tbl_size);
3122 required_resp_len = offsetof(typeof(resp), ind_tbl_num) + sizeof(resp.ind_tbl_num);
3123
3124 if (ucore->inlen < required_cmd_sz_header)
3125 return -EINVAL;
3126
3127 if (ucore->outlen < required_resp_len)
3128 return -ENOSPC;
3129
3130 err = ib_copy_from_udata(&cmd, ucore, required_cmd_sz_header);
3131 if (err)
3132 return err;
3133
3134 ucore->inbuf += required_cmd_sz_header;
3135 ucore->inlen -= required_cmd_sz_header;
3136
3137 if (cmd.comp_mask)
3138 return -EOPNOTSUPP;
3139
3140 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3141 return -EINVAL;
3142
3143 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3144 expected_in_size = num_wq_handles * sizeof(__u32);
3145 if (num_wq_handles == 1)
3146 /* input size for wq handles is u64 aligned */
3147 expected_in_size += sizeof(__u32);
3148
3149 if (ucore->inlen < expected_in_size)
3150 return -EINVAL;
3151
3152 if (ucore->inlen > expected_in_size &&
3153 !ib_is_udata_cleared(ucore, expected_in_size,
3154 ucore->inlen - expected_in_size))
3155 return -EOPNOTSUPP;
3156
3157 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3158 GFP_KERNEL);
3159 if (!wqs_handles)
3160 return -ENOMEM;
3161
3162 err = ib_copy_from_udata(wqs_handles, ucore,
3163 num_wq_handles * sizeof(__u32));
3164 if (err)
3165 goto err_free;
3166
3167 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3168 if (!wqs) {
3169 err = -ENOMEM;
3170 goto err_free;
3171 }
3172
3173 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3174 num_read_wqs++) {
3175 wq = uobj_get_obj_read(wq, wqs_handles[num_read_wqs],
3176 file->ucontext);
3177 if (!wq) {
3178 err = -EINVAL;
3179 goto put_wqs;
3180 }
3181
3182 wqs[num_read_wqs] = wq;
3183 }
3184
3185 uobj = uobj_alloc(uobj_get_type(rwq_ind_table), file->ucontext);
3186 if (IS_ERR(uobj)) {
3187 err = PTR_ERR(uobj);
3188 goto put_wqs;
3189 }
3190
3191 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3192 init_attr.ind_tbl = wqs;
3193 rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, uhw);
3194
3195 if (IS_ERR(rwq_ind_tbl)) {
3196 err = PTR_ERR(rwq_ind_tbl);
3197 goto err_uobj;
3198 }
3199
3200 rwq_ind_tbl->ind_tbl = wqs;
3201 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3202 rwq_ind_tbl->uobject = uobj;
3203 uobj->object = rwq_ind_tbl;
3204 rwq_ind_tbl->device = ib_dev;
3205 atomic_set(&rwq_ind_tbl->usecnt, 0);
3206
3207 for (i = 0; i < num_wq_handles; i++)
3208 atomic_inc(&wqs[i]->usecnt);
3209
3210 resp.ind_tbl_handle = uobj->id;
3211 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3212 resp.response_length = required_resp_len;
3213
3214 err = ib_copy_to_udata(ucore,
3215 &resp, resp.response_length);
3216 if (err)
3217 goto err_copy;
3218
3219 kfree(wqs_handles);
3220
3221 for (j = 0; j < num_read_wqs; j++)
3222 uobj_put_obj_read(wqs[j]);
3223
3224 uobj_alloc_commit(uobj);
3225 return 0;
3226
3227 err_copy:
3228 ib_destroy_rwq_ind_table(rwq_ind_tbl);
3229 err_uobj:
3230 uobj_alloc_abort(uobj);
3231 put_wqs:
3232 for (j = 0; j < num_read_wqs; j++)
3233 uobj_put_obj_read(wqs[j]);
3234 err_free:
3235 kfree(wqs_handles);
3236 kfree(wqs);
3237 return err;
3238 }
3239
3240 int ib_uverbs_ex_destroy_rwq_ind_table(struct ib_uverbs_file *file,
3241 struct ib_device *ib_dev,
3242 struct ib_udata *ucore,
3243 struct ib_udata *uhw)
3244 {
3245 struct ib_uverbs_ex_destroy_rwq_ind_table cmd = {};
3246 struct ib_uobject *uobj;
3247 int ret;
3248 size_t required_cmd_sz;
3249
3250 required_cmd_sz = offsetof(typeof(cmd), ind_tbl_handle) + sizeof(cmd.ind_tbl_handle);
3251
3252 if (ucore->inlen < required_cmd_sz)
3253 return -EINVAL;
3254
3255 if (ucore->inlen > sizeof(cmd) &&
3256 !ib_is_udata_cleared(ucore, sizeof(cmd),
3257 ucore->inlen - sizeof(cmd)))
3258 return -EOPNOTSUPP;
3259
3260 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3261 if (ret)
3262 return ret;
3263
3264 if (cmd.comp_mask)
3265 return -EOPNOTSUPP;
3266
3267 uobj = uobj_get_write(uobj_get_type(rwq_ind_table), cmd.ind_tbl_handle,
3268 file->ucontext);
3269 if (IS_ERR(uobj))
3270 return PTR_ERR(uobj);
3271
3272 return uobj_remove_commit(uobj);
3273 }
3274
3275 int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
3276 struct ib_device *ib_dev,
3277 struct ib_udata *ucore,
3278 struct ib_udata *uhw)
3279 {
3280 struct ib_uverbs_create_flow cmd;
3281 struct ib_uverbs_create_flow_resp resp;
3282 struct ib_uobject *uobj;
3283 struct ib_flow *flow_id;
3284 struct ib_uverbs_flow_attr *kern_flow_attr;
3285 struct ib_flow_attr *flow_attr;
3286 struct ib_qp *qp;
3287 int err = 0;
3288 void *kern_spec;
3289 void *ib_spec;
3290 int i;
3291
3292 if (ucore->inlen < sizeof(cmd))
3293 return -EINVAL;
3294
3295 if (ucore->outlen < sizeof(resp))
3296 return -ENOSPC;
3297
3298 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3299 if (err)
3300 return err;
3301
3302 ucore->inbuf += sizeof(cmd);
3303 ucore->inlen -= sizeof(cmd);
3304
3305 if (cmd.comp_mask)
3306 return -EINVAL;
3307
3308 if (!capable(CAP_NET_RAW))
3309 return -EPERM;
3310
3311 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3312 return -EINVAL;
3313
3314 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3315 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3316 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3317 return -EINVAL;
3318
3319 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3320 return -EINVAL;
3321
3322 if (cmd.flow_attr.size > ucore->inlen ||
3323 cmd.flow_attr.size >
3324 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3325 return -EINVAL;
3326
3327 if (cmd.flow_attr.reserved[0] ||
3328 cmd.flow_attr.reserved[1])
3329 return -EINVAL;
3330
3331 if (cmd.flow_attr.num_of_specs) {
3332 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3333 GFP_KERNEL);
3334 if (!kern_flow_attr)
3335 return -ENOMEM;
3336
3337 memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr));
3338 err = ib_copy_from_udata(kern_flow_attr + 1, ucore,
3339 cmd.flow_attr.size);
3340 if (err)
3341 goto err_free_attr;
3342 } else {
3343 kern_flow_attr = &cmd.flow_attr;
3344 }
3345
3346 uobj = uobj_alloc(uobj_get_type(flow), file->ucontext);
3347 if (IS_ERR(uobj)) {
3348 err = PTR_ERR(uobj);
3349 goto err_free_attr;
3350 }
3351
3352 qp = uobj_get_obj_read(qp, cmd.qp_handle, file->ucontext);
3353 if (!qp) {
3354 err = -EINVAL;
3355 goto err_uobj;
3356 }
3357
3358 flow_attr = kzalloc(sizeof(*flow_attr) + cmd.flow_attr.num_of_specs *
3359 sizeof(union ib_flow_spec), GFP_KERNEL);
3360 if (!flow_attr) {
3361 err = -ENOMEM;
3362 goto err_put;
3363 }
3364
3365 flow_attr->type = kern_flow_attr->type;
3366 flow_attr->priority = kern_flow_attr->priority;
3367 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3368 flow_attr->port = kern_flow_attr->port;
3369 flow_attr->flags = kern_flow_attr->flags;
3370 flow_attr->size = sizeof(*flow_attr);
3371
3372 kern_spec = kern_flow_attr + 1;
3373 ib_spec = flow_attr + 1;
3374 for (i = 0; i < flow_attr->num_of_specs &&
3375 cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) &&
3376 cmd.flow_attr.size >=
3377 ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) {
3378 err = kern_spec_to_ib_spec(kern_spec, ib_spec);
3379 if (err)
3380 goto err_free;
3381 flow_attr->size +=
3382 ((union ib_flow_spec *) ib_spec)->size;
3383 cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size;
3384 kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size;
3385 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3386 }
3387 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3388 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
3389 i, cmd.flow_attr.size);
3390 err = -EINVAL;
3391 goto err_free;
3392 }
3393 flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER);
3394 if (IS_ERR(flow_id)) {
3395 err = PTR_ERR(flow_id);
3396 goto err_free;
3397 }
3398 flow_id->uobject = uobj;
3399 uobj->object = flow_id;
3400
3401 memset(&resp, 0, sizeof(resp));
3402 resp.flow_handle = uobj->id;
3403
3404 err = ib_copy_to_udata(ucore,
3405 &resp, sizeof(resp));
3406 if (err)
3407 goto err_copy;
3408
3409 uobj_put_obj_read(qp);
3410 uobj_alloc_commit(uobj);
3411 kfree(flow_attr);
3412 if (cmd.flow_attr.num_of_specs)
3413 kfree(kern_flow_attr);
3414 return 0;
3415 err_copy:
3416 ib_destroy_flow(flow_id);
3417 err_free:
3418 kfree(flow_attr);
3419 err_put:
3420 uobj_put_obj_read(qp);
3421 err_uobj:
3422 uobj_alloc_abort(uobj);
3423 err_free_attr:
3424 if (cmd.flow_attr.num_of_specs)
3425 kfree(kern_flow_attr);
3426 return err;
3427 }
3428
3429 int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file,
3430 struct ib_device *ib_dev,
3431 struct ib_udata *ucore,
3432 struct ib_udata *uhw)
3433 {
3434 struct ib_uverbs_destroy_flow cmd;
3435 struct ib_uobject *uobj;
3436 int ret;
3437
3438 if (ucore->inlen < sizeof(cmd))
3439 return -EINVAL;
3440
3441 ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3442 if (ret)
3443 return ret;
3444
3445 if (cmd.comp_mask)
3446 return -EINVAL;
3447
3448 uobj = uobj_get_write(uobj_get_type(flow), cmd.flow_handle,
3449 file->ucontext);
3450 if (IS_ERR(uobj))
3451 return PTR_ERR(uobj);
3452
3453 ret = uobj_remove_commit(uobj);
3454 return ret;
3455 }
3456
3457 static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
3458 struct ib_device *ib_dev,
3459 struct ib_uverbs_create_xsrq *cmd,
3460 struct ib_udata *udata)
3461 {
3462 struct ib_uverbs_create_srq_resp resp;
3463 struct ib_usrq_object *obj;
3464 struct ib_pd *pd;
3465 struct ib_srq *srq;
3466 struct ib_uobject *uninitialized_var(xrcd_uobj);
3467 struct ib_srq_init_attr attr;
3468 int ret;
3469
3470 obj = (struct ib_usrq_object *)uobj_alloc(uobj_get_type(srq),
3471 file->ucontext);
3472 if (IS_ERR(obj))
3473 return PTR_ERR(obj);
3474
3475 if (cmd->srq_type == IB_SRQT_XRC) {
3476 xrcd_uobj = uobj_get_read(uobj_get_type(xrcd), cmd->xrcd_handle,
3477 file->ucontext);
3478 if (IS_ERR(xrcd_uobj)) {
3479 ret = -EINVAL;
3480 goto err;
3481 }
3482
3483 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3484 if (!attr.ext.xrc.xrcd) {
3485 ret = -EINVAL;
3486 goto err_put_xrcd;
3487 }
3488
3489 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3490 atomic_inc(&obj->uxrcd->refcnt);
3491
3492 attr.ext.xrc.cq = uobj_get_obj_read(cq, cmd->cq_handle,
3493 file->ucontext);
3494 if (!attr.ext.xrc.cq) {
3495 ret = -EINVAL;
3496 goto err_put_xrcd;
3497 }
3498 }
3499
3500 pd = uobj_get_obj_read(pd, cmd->pd_handle, file->ucontext);
3501 if (!pd) {
3502 ret = -EINVAL;
3503 goto err_put_cq;
3504 }
3505
3506 attr.event_handler = ib_uverbs_srq_event_handler;
3507 attr.srq_context = file;
3508 attr.srq_type = cmd->srq_type;
3509 attr.attr.max_wr = cmd->max_wr;
3510 attr.attr.max_sge = cmd->max_sge;
3511 attr.attr.srq_limit = cmd->srq_limit;
3512
3513 obj->uevent.events_reported = 0;
3514 INIT_LIST_HEAD(&obj->uevent.event_list);
3515
3516 srq = pd->device->create_srq(pd, &attr, udata);
3517 if (IS_ERR(srq)) {
3518 ret = PTR_ERR(srq);
3519 goto err_put;
3520 }
3521
3522 srq->device = pd->device;
3523 srq->pd = pd;
3524 srq->srq_type = cmd->srq_type;
3525 srq->uobject = &obj->uevent.uobject;
3526 srq->event_handler = attr.event_handler;
3527 srq->srq_context = attr.srq_context;
3528
3529 if (cmd->srq_type == IB_SRQT_XRC) {
3530 srq->ext.xrc.cq = attr.ext.xrc.cq;
3531 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
3532 atomic_inc(&attr.ext.xrc.cq->usecnt);
3533 atomic_inc(&attr.ext.xrc.xrcd->usecnt);
3534 }
3535
3536 atomic_inc(&pd->usecnt);
3537 atomic_set(&srq->usecnt, 0);
3538
3539 obj->uevent.uobject.object = srq;
3540 obj->uevent.uobject.user_handle = cmd->user_handle;
3541
3542 memset(&resp, 0, sizeof resp);
3543 resp.srq_handle = obj->uevent.uobject.id;
3544 resp.max_wr = attr.attr.max_wr;
3545 resp.max_sge = attr.attr.max_sge;
3546 if (cmd->srq_type == IB_SRQT_XRC)
3547 resp.srqn = srq->ext.xrc.srq_num;
3548
3549 if (copy_to_user((void __user *) (unsigned long) cmd->response,
3550 &resp, sizeof resp)) {
3551 ret = -EFAULT;
3552 goto err_copy;
3553 }
3554
3555 if (cmd->srq_type == IB_SRQT_XRC) {
3556 uobj_put_read(xrcd_uobj);
3557 uobj_put_obj_read(attr.ext.xrc.cq);
3558 }
3559 uobj_put_obj_read(pd);
3560 uobj_alloc_commit(&obj->uevent.uobject);
3561
3562 return 0;
3563
3564 err_copy:
3565 ib_destroy_srq(srq);
3566
3567 err_put:
3568 uobj_put_obj_read(pd);
3569
3570 err_put_cq:
3571 if (cmd->srq_type == IB_SRQT_XRC)
3572 uobj_put_obj_read(attr.ext.xrc.cq);
3573
3574 err_put_xrcd:
3575 if (cmd->srq_type == IB_SRQT_XRC) {
3576 atomic_dec(&obj->uxrcd->refcnt);
3577 uobj_put_read(xrcd_uobj);
3578 }
3579
3580 err:
3581 uobj_alloc_abort(&obj->uevent.uobject);
3582 return ret;
3583 }
3584
3585 ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
3586 struct ib_device *ib_dev,
3587 const char __user *buf, int in_len,
3588 int out_len)
3589 {
3590 struct ib_uverbs_create_srq cmd;
3591 struct ib_uverbs_create_xsrq xcmd;
3592 struct ib_uverbs_create_srq_resp resp;
3593 struct ib_udata udata;
3594 int ret;
3595
3596 if (out_len < sizeof resp)
3597 return -ENOSPC;
3598
3599 if (copy_from_user(&cmd, buf, sizeof cmd))
3600 return -EFAULT;
3601
3602 xcmd.response = cmd.response;
3603 xcmd.user_handle = cmd.user_handle;
3604 xcmd.srq_type = IB_SRQT_BASIC;
3605 xcmd.pd_handle = cmd.pd_handle;
3606 xcmd.max_wr = cmd.max_wr;
3607 xcmd.max_sge = cmd.max_sge;
3608 xcmd.srq_limit = cmd.srq_limit;
3609
3610 INIT_UDATA(&udata, buf + sizeof cmd,
3611 (unsigned long) cmd.response + sizeof resp,
3612 in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr),
3613 out_len - sizeof resp);
3614
3615 ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata);
3616 if (ret)
3617 return ret;
3618
3619 return in_len;
3620 }
3621
3622 ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file,
3623 struct ib_device *ib_dev,
3624 const char __user *buf, int in_len, int out_len)
3625 {
3626 struct ib_uverbs_create_xsrq cmd;
3627 struct ib_uverbs_create_srq_resp resp;
3628 struct ib_udata udata;
3629 int ret;
3630
3631 if (out_len < sizeof resp)
3632 return -ENOSPC;
3633
3634 if (copy_from_user(&cmd, buf, sizeof cmd))
3635 return -EFAULT;
3636
3637 INIT_UDATA(&udata, buf + sizeof cmd,
3638 (unsigned long) cmd.response + sizeof resp,
3639 in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr),
3640 out_len - sizeof resp);
3641
3642 ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata);
3643 if (ret)
3644 return ret;
3645
3646 return in_len;
3647 }
3648
3649 ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
3650 struct ib_device *ib_dev,
3651 const char __user *buf, int in_len,
3652 int out_len)
3653 {
3654 struct ib_uverbs_modify_srq cmd;
3655 struct ib_udata udata;
3656 struct ib_srq *srq;
3657 struct ib_srq_attr attr;
3658 int ret;
3659
3660 if (copy_from_user(&cmd, buf, sizeof cmd))
3661 return -EFAULT;
3662
3663 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
3664 out_len);
3665
3666 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext);
3667 if (!srq)
3668 return -EINVAL;
3669
3670 attr.max_wr = cmd.max_wr;
3671 attr.srq_limit = cmd.srq_limit;
3672
3673 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata);
3674
3675 uobj_put_obj_read(srq);
3676
3677 return ret ? ret : in_len;
3678 }
3679
3680 ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
3681 struct ib_device *ib_dev,
3682 const char __user *buf,
3683 int in_len, int out_len)
3684 {
3685 struct ib_uverbs_query_srq cmd;
3686 struct ib_uverbs_query_srq_resp resp;
3687 struct ib_srq_attr attr;
3688 struct ib_srq *srq;
3689 int ret;
3690
3691 if (out_len < sizeof resp)
3692 return -ENOSPC;
3693
3694 if (copy_from_user(&cmd, buf, sizeof cmd))
3695 return -EFAULT;
3696
3697 srq = uobj_get_obj_read(srq, cmd.srq_handle, file->ucontext);
3698 if (!srq)
3699 return -EINVAL;
3700
3701 ret = ib_query_srq(srq, &attr);
3702
3703 uobj_put_obj_read(srq);
3704
3705 if (ret)
3706 return ret;
3707
3708 memset(&resp, 0, sizeof resp);
3709
3710 resp.max_wr = attr.max_wr;
3711 resp.max_sge = attr.max_sge;
3712 resp.srq_limit = attr.srq_limit;
3713
3714 if (copy_to_user((void __user *) (unsigned long) cmd.response,
3715 &resp, sizeof resp))
3716 return -EFAULT;
3717
3718 return in_len;
3719 }
3720
3721 ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
3722 struct ib_device *ib_dev,
3723 const char __user *buf, int in_len,
3724 int out_len)
3725 {
3726 struct ib_uverbs_destroy_srq cmd;
3727 struct ib_uverbs_destroy_srq_resp resp;
3728 struct ib_uobject *uobj;
3729 struct ib_uevent_object *obj;
3730 int ret = -EINVAL;
3731
3732 if (copy_from_user(&cmd, buf, sizeof cmd))
3733 return -EFAULT;
3734
3735 uobj = uobj_get_write(uobj_get_type(srq), cmd.srq_handle,
3736 file->ucontext);
3737 if (IS_ERR(uobj))
3738 return PTR_ERR(uobj);
3739
3740 obj = container_of(uobj, struct ib_uevent_object, uobject);
3741 /*
3742 * Make sure we don't free the memory in remove_commit as we still
3743 * needs the uobject memory to create the response.
3744 */
3745 uverbs_uobject_get(uobj);
3746
3747 memset(&resp, 0, sizeof(resp));
3748
3749 ret = uobj_remove_commit(uobj);
3750 if (ret) {
3751 uverbs_uobject_put(uobj);
3752 return ret;
3753 }
3754 resp.events_reported = obj->events_reported;
3755 uverbs_uobject_put(uobj);
3756 if (copy_to_user((void __user *)(unsigned long)cmd.response,
3757 &resp, sizeof(resp)))
3758 return -EFAULT;
3759
3760 return in_len;
3761 }
3762
3763 int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
3764 struct ib_device *ib_dev,
3765 struct ib_udata *ucore,
3766 struct ib_udata *uhw)
3767 {
3768 struct ib_uverbs_ex_query_device_resp resp = { {0} };
3769 struct ib_uverbs_ex_query_device cmd;
3770 struct ib_device_attr attr = {0};
3771 int err;
3772
3773 if (ucore->inlen < sizeof(cmd))
3774 return -EINVAL;
3775
3776 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3777 if (err)
3778 return err;
3779
3780 if (cmd.comp_mask)
3781 return -EINVAL;
3782
3783 if (cmd.reserved)
3784 return -EINVAL;
3785
3786 resp.response_length = offsetof(typeof(resp), odp_caps);
3787
3788 if (ucore->outlen < resp.response_length)
3789 return -ENOSPC;
3790
3791 err = ib_dev->query_device(ib_dev, &attr, uhw);
3792 if (err)
3793 return err;
3794
3795 copy_query_dev_fields(file, ib_dev, &resp.base, &attr);
3796
3797 if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps))
3798 goto end;
3799
3800 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
3801 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3802 resp.odp_caps.per_transport_caps.rc_odp_caps =
3803 attr.odp_caps.per_transport_caps.rc_odp_caps;
3804 resp.odp_caps.per_transport_caps.uc_odp_caps =
3805 attr.odp_caps.per_transport_caps.uc_odp_caps;
3806 resp.odp_caps.per_transport_caps.ud_odp_caps =
3807 attr.odp_caps.per_transport_caps.ud_odp_caps;
3808 #endif
3809 resp.response_length += sizeof(resp.odp_caps);
3810
3811 if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask))
3812 goto end;
3813
3814 resp.timestamp_mask = attr.timestamp_mask;
3815 resp.response_length += sizeof(resp.timestamp_mask);
3816
3817 if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock))
3818 goto end;
3819
3820 resp.hca_core_clock = attr.hca_core_clock;
3821 resp.response_length += sizeof(resp.hca_core_clock);
3822
3823 if (ucore->outlen < resp.response_length + sizeof(resp.device_cap_flags_ex))
3824 goto end;
3825
3826 resp.device_cap_flags_ex = attr.device_cap_flags;
3827 resp.response_length += sizeof(resp.device_cap_flags_ex);
3828
3829 if (ucore->outlen < resp.response_length + sizeof(resp.rss_caps))
3830 goto end;
3831
3832 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3833 resp.rss_caps.max_rwq_indirection_tables =
3834 attr.rss_caps.max_rwq_indirection_tables;
3835 resp.rss_caps.max_rwq_indirection_table_size =
3836 attr.rss_caps.max_rwq_indirection_table_size;
3837
3838 resp.response_length += sizeof(resp.rss_caps);
3839
3840 if (ucore->outlen < resp.response_length + sizeof(resp.max_wq_type_rq))
3841 goto end;
3842
3843 resp.max_wq_type_rq = attr.max_wq_type_rq;
3844 resp.response_length += sizeof(resp.max_wq_type_rq);
3845
3846 if (ucore->outlen < resp.response_length + sizeof(resp.raw_packet_caps))
3847 goto end;
3848
3849 resp.raw_packet_caps = attr.raw_packet_caps;
3850 resp.response_length += sizeof(resp.raw_packet_caps);
3851 end:
3852 err = ib_copy_to_udata(ucore, &resp, resp.response_length);
3853 return err;
3854 }
Ubuntu Artful kernel mirror