]> git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blob - drivers/infiniband/core/uverbs_cmd.c
projects / mirror_ubuntu-hirsute-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
IB: Pass uverbs_attr_bundle down ib_x destroy path
[mirror_ubuntu-hirsute-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 /*
51 * Copy a response to userspace. If the provided 'resp' is larger than the
52 * user buffer it is silently truncated. If the user provided a larger buffer
53 * then the trailing portion is zero filled.
54 *
55 * These semantics are intended to support future extension of the output
56 * structures.
57 */
58 static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp,
59 size_t resp_len)
60 {
61 int ret;
62
63 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
64 return uverbs_copy_to_struct_or_zero(
65 attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len);
66
67 if (copy_to_user(attrs->ucore.outbuf, resp,
68 min(attrs->ucore.outlen, resp_len)))
69 return -EFAULT;
70
71 if (resp_len < attrs->ucore.outlen) {
72 /*
73 * Zero fill any extra memory that user
74 * space might have provided.
75 */
76 ret = clear_user(attrs->ucore.outbuf + resp_len,
77 attrs->ucore.outlen - resp_len);
78 if (ret)
79 return -EFAULT;
80 }
81
82 return 0;
83 }
84
85 /*
86 * Copy a request from userspace. If the provided 'req' is larger than the
87 * user buffer then the user buffer is zero extended into the 'req'. If 'req'
88 * is smaller than the user buffer then the uncopied bytes in the user buffer
89 * must be zero.
90 */
91 static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req,
92 size_t req_len)
93 {
94 if (copy_from_user(req, attrs->ucore.inbuf,
95 min(attrs->ucore.inlen, req_len)))
96 return -EFAULT;
97
98 if (attrs->ucore.inlen < req_len) {
99 memset(req + attrs->ucore.inlen, 0,
100 req_len - attrs->ucore.inlen);
101 } else if (attrs->ucore.inlen > req_len) {
102 if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len,
103 attrs->ucore.inlen - req_len))
104 return -EOPNOTSUPP;
105 }
106 return 0;
107 }
108
109 /*
110 * Generate the value for the 'response_length' protocol used by write_ex.
111 * This is the number of bytes the kernel actually wrote. Userspace can use
112 * this to detect what structure members in the response the kernel
113 * understood.
114 */
115 static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs,
116 size_t resp_len)
117 {
118 return min_t(size_t, attrs->ucore.outlen, resp_len);
119 }
120
121 /*
122 * The iterator version of the request interface is for handlers that need to
123 * step over a flex array at the end of a command header.
124 */
125 struct uverbs_req_iter {
126 const void __user *cur;
127 const void __user *end;
128 };
129
130 static int uverbs_request_start(struct uverbs_attr_bundle *attrs,
131 struct uverbs_req_iter *iter,
132 void *req,
133 size_t req_len)
134 {
135 if (attrs->ucore.inlen < req_len)
136 return -ENOSPC;
137
138 if (copy_from_user(req, attrs->ucore.inbuf, req_len))
139 return -EFAULT;
140
141 iter->cur = attrs->ucore.inbuf + req_len;
142 iter->end = attrs->ucore.inbuf + attrs->ucore.inlen;
143 return 0;
144 }
145
146 static int uverbs_request_next(struct uverbs_req_iter *iter, void *val,
147 size_t len)
148 {
149 if (iter->cur + len > iter->end)
150 return -ENOSPC;
151
152 if (copy_from_user(val, iter->cur, len))
153 return -EFAULT;
154
155 iter->cur += len;
156 return 0;
157 }
158
159 static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter,
160 size_t len)
161 {
162 const void __user *res = iter->cur;
163
164 if (iter->cur + len > iter->end)
165 return (void __force __user *)ERR_PTR(-ENOSPC);
166 iter->cur += len;
167 return res;
168 }
169
170 static int uverbs_request_finish(struct uverbs_req_iter *iter)
171 {
172 if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur))
173 return -EOPNOTSUPP;
174 return 0;
175 }
176
177 static struct ib_uverbs_completion_event_file *
178 _ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs)
179 {
180 struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL,
181 fd, attrs);
182
183 if (IS_ERR(uobj))
184 return (void *)uobj;
185
186 uverbs_uobject_get(uobj);
187 uobj_put_read(uobj);
188
189 return container_of(uobj, struct ib_uverbs_completion_event_file,
190 uobj);
191 }
192 #define ib_uverbs_lookup_comp_file(_fd, _ufile) \
193 _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile)
194
195 static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs)
196 {
197 struct ib_uverbs_file *file = attrs->ufile;
198 struct ib_uverbs_get_context cmd;
199 struct ib_uverbs_get_context_resp resp;
200 struct ib_ucontext *ucontext;
201 struct file *filp;
202 struct ib_rdmacg_object cg_obj;
203 struct ib_device *ib_dev;
204 int ret;
205
206 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
207 if (ret)
208 return ret;
209
210 mutex_lock(&file->ucontext_lock);
211 ib_dev = srcu_dereference(file->device->ib_dev,
212 &file->device->disassociate_srcu);
213 if (!ib_dev) {
214 ret = -EIO;
215 goto err;
216 }
217
218 if (file->ucontext) {
219 ret = -EINVAL;
220 goto err;
221 }
222
223 ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
224 if (ret)
225 goto err;
226
227 ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext);
228 if (!ucontext) {
229 ret = -ENOMEM;
230 goto err_alloc;
231 }
232
233 ucontext->res.type = RDMA_RESTRACK_CTX;
234 ucontext->device = ib_dev;
235 ucontext->cg_obj = cg_obj;
236 /* ufile is required when some objects are released */
237 ucontext->ufile = file;
238
239 ucontext->closing = false;
240 ucontext->cleanup_retryable = false;
241
242 mutex_init(&ucontext->per_mm_list_lock);
243 INIT_LIST_HEAD(&ucontext->per_mm_list);
244
245 ret = get_unused_fd_flags(O_CLOEXEC);
246 if (ret < 0)
247 goto err_free;
248 resp.async_fd = ret;
249
250 filp = ib_uverbs_alloc_async_event_file(file, ib_dev);
251 if (IS_ERR(filp)) {
252 ret = PTR_ERR(filp);
253 goto err_fd;
254 }
255
256 resp.num_comp_vectors = file->device->num_comp_vectors;
257
258 ret = uverbs_response(attrs, &resp, sizeof(resp));
259 if (ret)
260 goto err_file;
261
262 ret = ib_dev->ops.alloc_ucontext(ucontext, &attrs->driver_udata);
263 if (ret)
264 goto err_file;
265 if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING))
266 ucontext->invalidate_range = NULL;
267
268 rdma_restrack_uadd(&ucontext->res);
269
270 fd_install(resp.async_fd, filp);
271
272 /*
273 * Make sure that ib_uverbs_get_ucontext() sees the pointer update
274 * only after all writes to setup the ucontext have completed
275 */
276 smp_store_release(&file->ucontext, ucontext);
277
278 mutex_unlock(&file->ucontext_lock);
279
280 return 0;
281
282 err_file:
283 ib_uverbs_free_async_event_file(file);
284 fput(filp);
285
286 err_fd:
287 put_unused_fd(resp.async_fd);
288
289 err_free:
290 kfree(ucontext);
291
292 err_alloc:
293 ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
294
295 err:
296 mutex_unlock(&file->ucontext_lock);
297 return ret;
298 }
299
300 static void copy_query_dev_fields(struct ib_ucontext *ucontext,
301 struct ib_uverbs_query_device_resp *resp,
302 struct ib_device_attr *attr)
303 {
304 struct ib_device *ib_dev = ucontext->device;
305
306 resp->fw_ver = attr->fw_ver;
307 resp->node_guid = ib_dev->node_guid;
308 resp->sys_image_guid = attr->sys_image_guid;
309 resp->max_mr_size = attr->max_mr_size;
310 resp->page_size_cap = attr->page_size_cap;
311 resp->vendor_id = attr->vendor_id;
312 resp->vendor_part_id = attr->vendor_part_id;
313 resp->hw_ver = attr->hw_ver;
314 resp->max_qp = attr->max_qp;
315 resp->max_qp_wr = attr->max_qp_wr;
316 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags);
317 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge);
318 resp->max_sge_rd = attr->max_sge_rd;
319 resp->max_cq = attr->max_cq;
320 resp->max_cqe = attr->max_cqe;
321 resp->max_mr = attr->max_mr;
322 resp->max_pd = attr->max_pd;
323 resp->max_qp_rd_atom = attr->max_qp_rd_atom;
324 resp->max_ee_rd_atom = attr->max_ee_rd_atom;
325 resp->max_res_rd_atom = attr->max_res_rd_atom;
326 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom;
327 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom;
328 resp->atomic_cap = attr->atomic_cap;
329 resp->max_ee = attr->max_ee;
330 resp->max_rdd = attr->max_rdd;
331 resp->max_mw = attr->max_mw;
332 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp;
333 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp;
334 resp->max_mcast_grp = attr->max_mcast_grp;
335 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
336 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
337 resp->max_ah = attr->max_ah;
338 resp->max_fmr = attr->max_fmr;
339 resp->max_map_per_fmr = attr->max_map_per_fmr;
340 resp->max_srq = attr->max_srq;
341 resp->max_srq_wr = attr->max_srq_wr;
342 resp->max_srq_sge = attr->max_srq_sge;
343 resp->max_pkeys = attr->max_pkeys;
344 resp->local_ca_ack_delay = attr->local_ca_ack_delay;
345 resp->phys_port_cnt = ib_dev->phys_port_cnt;
346 }
347
348 static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs)
349 {
350 struct ib_uverbs_query_device cmd;
351 struct ib_uverbs_query_device_resp resp;
352 struct ib_ucontext *ucontext;
353 int ret;
354
355 ucontext = ib_uverbs_get_ucontext(attrs);
356 if (IS_ERR(ucontext))
357 return PTR_ERR(ucontext);
358
359 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
360 if (ret)
361 return ret;
362
363 memset(&resp, 0, sizeof resp);
364 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs);
365
366 return uverbs_response(attrs, &resp, sizeof(resp));
367 }
368
369 static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs)
370 {
371 struct ib_uverbs_query_port cmd;
372 struct ib_uverbs_query_port_resp resp;
373 struct ib_port_attr attr;
374 int ret;
375 struct ib_ucontext *ucontext;
376 struct ib_device *ib_dev;
377
378 ucontext = ib_uverbs_get_ucontext(attrs);
379 if (IS_ERR(ucontext))
380 return PTR_ERR(ucontext);
381 ib_dev = ucontext->device;
382
383 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
384 if (ret)
385 return ret;
386
387 ret = ib_query_port(ib_dev, cmd.port_num, &attr);
388 if (ret)
389 return ret;
390
391 memset(&resp, 0, sizeof resp);
392 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num);
393
394 return uverbs_response(attrs, &resp, sizeof(resp));
395 }
396
397 static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs)
398 {
399 struct ib_uverbs_alloc_pd cmd;
400 struct ib_uverbs_alloc_pd_resp resp;
401 struct ib_uobject *uobj;
402 struct ib_pd *pd;
403 int ret;
404 struct ib_device *ib_dev;
405
406 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
407 if (ret)
408 return ret;
409
410 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev);
411 if (IS_ERR(uobj))
412 return PTR_ERR(uobj);
413
414 pd = rdma_zalloc_drv_obj(ib_dev, ib_pd);
415 if (!pd) {
416 ret = -ENOMEM;
417 goto err;
418 }
419
420 pd->device = ib_dev;
421 pd->uobject = uobj;
422 pd->__internal_mr = NULL;
423 atomic_set(&pd->usecnt, 0);
424 pd->res.type = RDMA_RESTRACK_PD;
425
426 ret = ib_dev->ops.alloc_pd(pd, uobj->context, &attrs->driver_udata);
427 if (ret)
428 goto err_alloc;
429
430 uobj->object = pd;
431 memset(&resp, 0, sizeof resp);
432 resp.pd_handle = uobj->id;
433 rdma_restrack_uadd(&pd->res);
434
435 ret = uverbs_response(attrs, &resp, sizeof(resp));
436 if (ret)
437 goto err_copy;
438
439 return uobj_alloc_commit(uobj, attrs);
440
441 err_copy:
442 ib_dealloc_pd_user(pd, &attrs->driver_udata);
443 pd = NULL;
444 err_alloc:
445 kfree(pd);
446 err:
447 uobj_alloc_abort(uobj, attrs);
448 return ret;
449 }
450
451 static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs)
452 {
453 struct ib_uverbs_dealloc_pd cmd;
454 int ret;
455
456 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
457 if (ret)
458 return ret;
459
460 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
461 }
462
463 struct xrcd_table_entry {
464 struct rb_node node;
465 struct ib_xrcd *xrcd;
466 struct inode *inode;
467 };
468
469 static int xrcd_table_insert(struct ib_uverbs_device *dev,
470 struct inode *inode,
471 struct ib_xrcd *xrcd)
472 {
473 struct xrcd_table_entry *entry, *scan;
474 struct rb_node **p = &dev->xrcd_tree.rb_node;
475 struct rb_node *parent = NULL;
476
477 entry = kmalloc(sizeof *entry, GFP_KERNEL);
478 if (!entry)
479 return -ENOMEM;
480
481 entry->xrcd = xrcd;
482 entry->inode = inode;
483
484 while (*p) {
485 parent = *p;
486 scan = rb_entry(parent, struct xrcd_table_entry, node);
487
488 if (inode < scan->inode) {
489 p = &(*p)->rb_left;
490 } else if (inode > scan->inode) {
491 p = &(*p)->rb_right;
492 } else {
493 kfree(entry);
494 return -EEXIST;
495 }
496 }
497
498 rb_link_node(&entry->node, parent, p);
499 rb_insert_color(&entry->node, &dev->xrcd_tree);
500 igrab(inode);
501 return 0;
502 }
503
504 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
505 struct inode *inode)
506 {
507 struct xrcd_table_entry *entry;
508 struct rb_node *p = dev->xrcd_tree.rb_node;
509
510 while (p) {
511 entry = rb_entry(p, struct xrcd_table_entry, node);
512
513 if (inode < entry->inode)
514 p = p->rb_left;
515 else if (inode > entry->inode)
516 p = p->rb_right;
517 else
518 return entry;
519 }
520
521 return NULL;
522 }
523
524 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
525 {
526 struct xrcd_table_entry *entry;
527
528 entry = xrcd_table_search(dev, inode);
529 if (!entry)
530 return NULL;
531
532 return entry->xrcd;
533 }
534
535 static void xrcd_table_delete(struct ib_uverbs_device *dev,
536 struct inode *inode)
537 {
538 struct xrcd_table_entry *entry;
539
540 entry = xrcd_table_search(dev, inode);
541 if (entry) {
542 iput(inode);
543 rb_erase(&entry->node, &dev->xrcd_tree);
544 kfree(entry);
545 }
546 }
547
548 static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs)
549 {
550 struct ib_uverbs_device *ibudev = attrs->ufile->device;
551 struct ib_uverbs_open_xrcd cmd;
552 struct ib_uverbs_open_xrcd_resp resp;
553 struct ib_uxrcd_object *obj;
554 struct ib_xrcd *xrcd = NULL;
555 struct fd f = {NULL, 0};
556 struct inode *inode = NULL;
557 int ret = 0;
558 int new_xrcd = 0;
559 struct ib_device *ib_dev;
560
561 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
562 if (ret)
563 return ret;
564
565 mutex_lock(&ibudev->xrcd_tree_mutex);
566
567 if (cmd.fd != -1) {
568 /* search for file descriptor */
569 f = fdget(cmd.fd);
570 if (!f.file) {
571 ret = -EBADF;
572 goto err_tree_mutex_unlock;
573 }
574
575 inode = file_inode(f.file);
576 xrcd = find_xrcd(ibudev, inode);
577 if (!xrcd && !(cmd.oflags & O_CREAT)) {
578 /* no file descriptor. Need CREATE flag */
579 ret = -EAGAIN;
580 goto err_tree_mutex_unlock;
581 }
582
583 if (xrcd && cmd.oflags & O_EXCL) {
584 ret = -EINVAL;
585 goto err_tree_mutex_unlock;
586 }
587 }
588
589 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs,
590 &ib_dev);
591 if (IS_ERR(obj)) {
592 ret = PTR_ERR(obj);
593 goto err_tree_mutex_unlock;
594 }
595
596 if (!xrcd) {
597 xrcd = ib_dev->ops.alloc_xrcd(ib_dev, obj->uobject.context,
598 &attrs->driver_udata);
599 if (IS_ERR(xrcd)) {
600 ret = PTR_ERR(xrcd);
601 goto err;
602 }
603
604 xrcd->inode = inode;
605 xrcd->device = ib_dev;
606 atomic_set(&xrcd->usecnt, 0);
607 mutex_init(&xrcd->tgt_qp_mutex);
608 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
609 new_xrcd = 1;
610 }
611
612 atomic_set(&obj->refcnt, 0);
613 obj->uobject.object = xrcd;
614 memset(&resp, 0, sizeof resp);
615 resp.xrcd_handle = obj->uobject.id;
616
617 if (inode) {
618 if (new_xrcd) {
619 /* create new inode/xrcd table entry */
620 ret = xrcd_table_insert(ibudev, inode, xrcd);
621 if (ret)
622 goto err_dealloc_xrcd;
623 }
624 atomic_inc(&xrcd->usecnt);
625 }
626
627 ret = uverbs_response(attrs, &resp, sizeof(resp));
628 if (ret)
629 goto err_copy;
630
631 if (f.file)
632 fdput(f);
633
634 mutex_unlock(&ibudev->xrcd_tree_mutex);
635
636 return uobj_alloc_commit(&obj->uobject, attrs);
637
638 err_copy:
639 if (inode) {
640 if (new_xrcd)
641 xrcd_table_delete(ibudev, inode);
642 atomic_dec(&xrcd->usecnt);
643 }
644
645 err_dealloc_xrcd:
646 ib_dealloc_xrcd(xrcd, &attrs->driver_udata);
647
648 err:
649 uobj_alloc_abort(&obj->uobject, attrs);
650
651 err_tree_mutex_unlock:
652 if (f.file)
653 fdput(f);
654
655 mutex_unlock(&ibudev->xrcd_tree_mutex);
656
657 return ret;
658 }
659
660 static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs)
661 {
662 struct ib_uverbs_close_xrcd cmd;
663 int ret;
664
665 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
666 if (ret)
667 return ret;
668
669 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs);
670 }
671
672 int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd,
673 enum rdma_remove_reason why, struct ib_udata *udata)
674 {
675 struct inode *inode;
676 int ret;
677 struct ib_uverbs_device *dev = uobject->context->ufile->device;
678
679 inode = xrcd->inode;
680 if (inode && !atomic_dec_and_test(&xrcd->usecnt))
681 return 0;
682
683 ret = ib_dealloc_xrcd(xrcd, udata);
684
685 if (ib_is_destroy_retryable(ret, why, uobject)) {
686 atomic_inc(&xrcd->usecnt);
687 return ret;
688 }
689
690 if (inode)
691 xrcd_table_delete(dev, inode);
692
693 return ret;
694 }
695
696 static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs)
697 {
698 struct ib_uverbs_reg_mr cmd;
699 struct ib_uverbs_reg_mr_resp resp;
700 struct ib_uobject *uobj;
701 struct ib_pd *pd;
702 struct ib_mr *mr;
703 int ret;
704 struct ib_device *ib_dev;
705
706 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
707 if (ret)
708 return ret;
709
710 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
711 return -EINVAL;
712
713 ret = ib_check_mr_access(cmd.access_flags);
714 if (ret)
715 return ret;
716
717 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
718 if (IS_ERR(uobj))
719 return PTR_ERR(uobj);
720
721 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
722 if (!pd) {
723 ret = -EINVAL;
724 goto err_free;
725 }
726
727 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) {
728 if (!(pd->device->attrs.device_cap_flags &
729 IB_DEVICE_ON_DEMAND_PAGING)) {
730 pr_debug("ODP support not available\n");
731 ret = -EINVAL;
732 goto err_put;
733 }
734 }
735
736 mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
737 cmd.access_flags,
738 &attrs->driver_udata);
739 if (IS_ERR(mr)) {
740 ret = PTR_ERR(mr);
741 goto err_put;
742 }
743
744 mr->device = pd->device;
745 mr->pd = pd;
746 mr->dm = NULL;
747 mr->uobject = uobj;
748 atomic_inc(&pd->usecnt);
749 mr->res.type = RDMA_RESTRACK_MR;
750 rdma_restrack_uadd(&mr->res);
751
752 uobj->object = mr;
753
754 memset(&resp, 0, sizeof resp);
755 resp.lkey = mr->lkey;
756 resp.rkey = mr->rkey;
757 resp.mr_handle = uobj->id;
758
759 ret = uverbs_response(attrs, &resp, sizeof(resp));
760 if (ret)
761 goto err_copy;
762
763 uobj_put_obj_read(pd);
764
765 return uobj_alloc_commit(uobj, attrs);
766
767 err_copy:
768 ib_dereg_mr_user(mr, &attrs->driver_udata);
769
770 err_put:
771 uobj_put_obj_read(pd);
772
773 err_free:
774 uobj_alloc_abort(uobj, attrs);
775 return ret;
776 }
777
778 static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs)
779 {
780 struct ib_uverbs_rereg_mr cmd;
781 struct ib_uverbs_rereg_mr_resp resp;
782 struct ib_pd *pd = NULL;
783 struct ib_mr *mr;
784 struct ib_pd *old_pd;
785 int ret;
786 struct ib_uobject *uobj;
787
788 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
789 if (ret)
790 return ret;
791
792 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags)
793 return -EINVAL;
794
795 if ((cmd.flags & IB_MR_REREG_TRANS) &&
796 (!cmd.start || !cmd.hca_va || 0 >= cmd.length ||
797 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)))
798 return -EINVAL;
799
800 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
801 if (IS_ERR(uobj))
802 return PTR_ERR(uobj);
803
804 mr = uobj->object;
805
806 if (mr->dm) {
807 ret = -EINVAL;
808 goto put_uobjs;
809 }
810
811 if (cmd.flags & IB_MR_REREG_ACCESS) {
812 ret = ib_check_mr_access(cmd.access_flags);
813 if (ret)
814 goto put_uobjs;
815 }
816
817 if (cmd.flags & IB_MR_REREG_PD) {
818 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle,
819 attrs);
820 if (!pd) {
821 ret = -EINVAL;
822 goto put_uobjs;
823 }
824 }
825
826 old_pd = mr->pd;
827 ret = mr->device->ops.rereg_user_mr(mr, cmd.flags, cmd.start,
828 cmd.length, cmd.hca_va,
829 cmd.access_flags, pd,
830 &attrs->driver_udata);
831 if (ret)
832 goto put_uobj_pd;
833
834 if (cmd.flags & IB_MR_REREG_PD) {
835 atomic_inc(&pd->usecnt);
836 mr->pd = pd;
837 atomic_dec(&old_pd->usecnt);
838 }
839
840 memset(&resp, 0, sizeof(resp));
841 resp.lkey = mr->lkey;
842 resp.rkey = mr->rkey;
843
844 ret = uverbs_response(attrs, &resp, sizeof(resp));
845
846 put_uobj_pd:
847 if (cmd.flags & IB_MR_REREG_PD)
848 uobj_put_obj_read(pd);
849
850 put_uobjs:
851 uobj_put_write(uobj);
852
853 return ret;
854 }
855
856 static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs)
857 {
858 struct ib_uverbs_dereg_mr cmd;
859 int ret;
860
861 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
862 if (ret)
863 return ret;
864
865 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
866 }
867
868 static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
869 {
870 struct ib_uverbs_alloc_mw cmd;
871 struct ib_uverbs_alloc_mw_resp resp;
872 struct ib_uobject *uobj;
873 struct ib_pd *pd;
874 struct ib_mw *mw;
875 int ret;
876 struct ib_device *ib_dev;
877
878 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
879 if (ret)
880 return ret;
881
882 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev);
883 if (IS_ERR(uobj))
884 return PTR_ERR(uobj);
885
886 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
887 if (!pd) {
888 ret = -EINVAL;
889 goto err_free;
890 }
891
892 if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) {
893 ret = -EINVAL;
894 goto err_put;
895 }
896
897 mw = pd->device->ops.alloc_mw(pd, cmd.mw_type, &attrs->driver_udata);
898 if (IS_ERR(mw)) {
899 ret = PTR_ERR(mw);
900 goto err_put;
901 }
902
903 mw->device = pd->device;
904 mw->pd = pd;
905 mw->uobject = uobj;
906 atomic_inc(&pd->usecnt);
907
908 uobj->object = mw;
909
910 memset(&resp, 0, sizeof(resp));
911 resp.rkey = mw->rkey;
912 resp.mw_handle = uobj->id;
913
914 ret = uverbs_response(attrs, &resp, sizeof(resp));
915 if (ret)
916 goto err_copy;
917
918 uobj_put_obj_read(pd);
919 return uobj_alloc_commit(uobj, attrs);
920
921 err_copy:
922 uverbs_dealloc_mw(mw);
923 err_put:
924 uobj_put_obj_read(pd);
925 err_free:
926 uobj_alloc_abort(uobj, attrs);
927 return ret;
928 }
929
930 static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs)
931 {
932 struct ib_uverbs_dealloc_mw cmd;
933 int ret;
934
935 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
936 if (ret)
937 return ret;
938
939 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs);
940 }
941
942 static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs)
943 {
944 struct ib_uverbs_create_comp_channel cmd;
945 struct ib_uverbs_create_comp_channel_resp resp;
946 struct ib_uobject *uobj;
947 struct ib_uverbs_completion_event_file *ev_file;
948 struct ib_device *ib_dev;
949 int ret;
950
951 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
952 if (ret)
953 return ret;
954
955 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev);
956 if (IS_ERR(uobj))
957 return PTR_ERR(uobj);
958
959 resp.fd = uobj->id;
960
961 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file,
962 uobj);
963 ib_uverbs_init_event_queue(&ev_file->ev_queue);
964
965 ret = uverbs_response(attrs, &resp, sizeof(resp));
966 if (ret) {
967 uobj_alloc_abort(uobj, attrs);
968 return ret;
969 }
970
971 return uobj_alloc_commit(uobj, attrs);
972 }
973
974 static struct ib_ucq_object *create_cq(struct uverbs_attr_bundle *attrs,
975 struct ib_uverbs_ex_create_cq *cmd)
976 {
977 struct ib_ucq_object *obj;
978 struct ib_uverbs_completion_event_file *ev_file = NULL;
979 struct ib_cq *cq;
980 int ret;
981 struct ib_uverbs_ex_create_cq_resp resp;
982 struct ib_cq_init_attr attr = {};
983 struct ib_device *ib_dev;
984
985 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors)
986 return ERR_PTR(-EINVAL);
987
988 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs,
989 &ib_dev);
990 if (IS_ERR(obj))
991 return obj;
992
993 if (cmd->comp_channel >= 0) {
994 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs);
995 if (IS_ERR(ev_file)) {
996 ret = PTR_ERR(ev_file);
997 goto err;
998 }
999 }
1000
1001 obj->uobject.user_handle = cmd->user_handle;
1002 obj->comp_events_reported = 0;
1003 obj->async_events_reported = 0;
1004 INIT_LIST_HEAD(&obj->comp_list);
1005 INIT_LIST_HEAD(&obj->async_list);
1006
1007 attr.cqe = cmd->cqe;
1008 attr.comp_vector = cmd->comp_vector;
1009 attr.flags = cmd->flags;
1010
1011 cq = ib_dev->ops.create_cq(ib_dev, &attr, obj->uobject.context,
1012 &attrs->driver_udata);
1013 if (IS_ERR(cq)) {
1014 ret = PTR_ERR(cq);
1015 goto err_file;
1016 }
1017
1018 cq->device = ib_dev;
1019 cq->uobject = &obj->uobject;
1020 cq->comp_handler = ib_uverbs_comp_handler;
1021 cq->event_handler = ib_uverbs_cq_event_handler;
1022 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
1023 atomic_set(&cq->usecnt, 0);
1024
1025 obj->uobject.object = cq;
1026 memset(&resp, 0, sizeof resp);
1027 resp.base.cq_handle = obj->uobject.id;
1028 resp.base.cqe = cq->cqe;
1029 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1030
1031 cq->res.type = RDMA_RESTRACK_CQ;
1032 rdma_restrack_uadd(&cq->res);
1033
1034 ret = uverbs_response(attrs, &resp, sizeof(resp));
1035 if (ret)
1036 goto err_cb;
1037
1038 ret = uobj_alloc_commit(&obj->uobject, attrs);
1039 if (ret)
1040 return ERR_PTR(ret);
1041 return obj;
1042
1043 err_cb:
1044 ib_destroy_cq(cq);
1045
1046 err_file:
1047 if (ev_file)
1048 ib_uverbs_release_ucq(attrs->ufile, ev_file, obj);
1049
1050 err:
1051 uobj_alloc_abort(&obj->uobject, attrs);
1052
1053 return ERR_PTR(ret);
1054 }
1055
1056 static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs)
1057 {
1058 struct ib_uverbs_create_cq cmd;
1059 struct ib_uverbs_ex_create_cq cmd_ex;
1060 struct ib_ucq_object *obj;
1061 int ret;
1062
1063 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1064 if (ret)
1065 return ret;
1066
1067 memset(&cmd_ex, 0, sizeof(cmd_ex));
1068 cmd_ex.user_handle = cmd.user_handle;
1069 cmd_ex.cqe = cmd.cqe;
1070 cmd_ex.comp_vector = cmd.comp_vector;
1071 cmd_ex.comp_channel = cmd.comp_channel;
1072
1073 obj = create_cq(attrs, &cmd_ex);
1074 return PTR_ERR_OR_ZERO(obj);
1075 }
1076
1077 static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs)
1078 {
1079 struct ib_uverbs_ex_create_cq cmd;
1080 struct ib_ucq_object *obj;
1081 int ret;
1082
1083 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1084 if (ret)
1085 return ret;
1086
1087 if (cmd.comp_mask)
1088 return -EINVAL;
1089
1090 if (cmd.reserved)
1091 return -EINVAL;
1092
1093 obj = create_cq(attrs, &cmd);
1094 return PTR_ERR_OR_ZERO(obj);
1095 }
1096
1097 static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs)
1098 {
1099 struct ib_uverbs_resize_cq cmd;
1100 struct ib_uverbs_resize_cq_resp resp = {};
1101 struct ib_cq *cq;
1102 int ret = -EINVAL;
1103
1104 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1105 if (ret)
1106 return ret;
1107
1108 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1109 if (!cq)
1110 return -EINVAL;
1111
1112 ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata);
1113 if (ret)
1114 goto out;
1115
1116 resp.cqe = cq->cqe;
1117
1118 ret = uverbs_response(attrs, &resp, sizeof(resp));
1119 out:
1120 uobj_put_obj_read(cq);
1121
1122 return ret;
1123 }
1124
1125 static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest,
1126 struct ib_wc *wc)
1127 {
1128 struct ib_uverbs_wc tmp;
1129
1130 tmp.wr_id = wc->wr_id;
1131 tmp.status = wc->status;
1132 tmp.opcode = wc->opcode;
1133 tmp.vendor_err = wc->vendor_err;
1134 tmp.byte_len = wc->byte_len;
1135 tmp.ex.imm_data = wc->ex.imm_data;
1136 tmp.qp_num = wc->qp->qp_num;
1137 tmp.src_qp = wc->src_qp;
1138 tmp.wc_flags = wc->wc_flags;
1139 tmp.pkey_index = wc->pkey_index;
1140 if (rdma_cap_opa_ah(ib_dev, wc->port_num))
1141 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid);
1142 else
1143 tmp.slid = ib_lid_cpu16(wc->slid);
1144 tmp.sl = wc->sl;
1145 tmp.dlid_path_bits = wc->dlid_path_bits;
1146 tmp.port_num = wc->port_num;
1147 tmp.reserved = 0;
1148
1149 if (copy_to_user(dest, &tmp, sizeof tmp))
1150 return -EFAULT;
1151
1152 return 0;
1153 }
1154
1155 static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs)
1156 {
1157 struct ib_uverbs_poll_cq cmd;
1158 struct ib_uverbs_poll_cq_resp resp;
1159 u8 __user *header_ptr;
1160 u8 __user *data_ptr;
1161 struct ib_cq *cq;
1162 struct ib_wc wc;
1163 int ret;
1164
1165 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1166 if (ret)
1167 return ret;
1168
1169 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1170 if (!cq)
1171 return -EINVAL;
1172
1173 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1174 header_ptr = attrs->ucore.outbuf;
1175 data_ptr = header_ptr + sizeof resp;
1176
1177 memset(&resp, 0, sizeof resp);
1178 while (resp.count < cmd.ne) {
1179 ret = ib_poll_cq(cq, 1, &wc);
1180 if (ret < 0)
1181 goto out_put;
1182 if (!ret)
1183 break;
1184
1185 ret = copy_wc_to_user(cq->device, data_ptr, &wc);
1186 if (ret)
1187 goto out_put;
1188
1189 data_ptr += sizeof(struct ib_uverbs_wc);
1190 ++resp.count;
1191 }
1192
1193 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1194 ret = -EFAULT;
1195 goto out_put;
1196 }
1197 ret = 0;
1198
1199 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
1200 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT);
1201
1202 out_put:
1203 uobj_put_obj_read(cq);
1204 return ret;
1205 }
1206
1207 static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs)
1208 {
1209 struct ib_uverbs_req_notify_cq cmd;
1210 struct ib_cq *cq;
1211 int ret;
1212
1213 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1214 if (ret)
1215 return ret;
1216
1217 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1218 if (!cq)
1219 return -EINVAL;
1220
1221 ib_req_notify_cq(cq, cmd.solicited_only ?
1222 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1223
1224 uobj_put_obj_read(cq);
1225
1226 return 0;
1227 }
1228
1229 static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs)
1230 {
1231 struct ib_uverbs_destroy_cq cmd;
1232 struct ib_uverbs_destroy_cq_resp resp;
1233 struct ib_uobject *uobj;
1234 struct ib_ucq_object *obj;
1235 int ret;
1236
1237 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1238 if (ret)
1239 return ret;
1240
1241 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1242 if (IS_ERR(uobj))
1243 return PTR_ERR(uobj);
1244
1245 obj = container_of(uobj, struct ib_ucq_object, uobject);
1246 memset(&resp, 0, sizeof(resp));
1247 resp.comp_events_reported = obj->comp_events_reported;
1248 resp.async_events_reported = obj->async_events_reported;
1249
1250 uobj_put_destroy(uobj);
1251
1252 return uverbs_response(attrs, &resp, sizeof(resp));
1253 }
1254
1255 static int create_qp(struct uverbs_attr_bundle *attrs,
1256 struct ib_uverbs_ex_create_qp *cmd)
1257 {
1258 struct ib_uqp_object *obj;
1259 struct ib_device *device;
1260 struct ib_pd *pd = NULL;
1261 struct ib_xrcd *xrcd = NULL;
1262 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT);
1263 struct ib_cq *scq = NULL, *rcq = NULL;
1264 struct ib_srq *srq = NULL;
1265 struct ib_qp *qp;
1266 struct ib_qp_init_attr attr = {};
1267 struct ib_uverbs_ex_create_qp_resp resp;
1268 int ret;
1269 struct ib_rwq_ind_table *ind_tbl = NULL;
1270 bool has_sq = true;
1271 struct ib_device *ib_dev;
1272
1273 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
1274 return -EPERM;
1275
1276 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1277 &ib_dev);
1278 if (IS_ERR(obj))
1279 return PTR_ERR(obj);
1280 obj->uxrcd = NULL;
1281 obj->uevent.uobject.user_handle = cmd->user_handle;
1282 mutex_init(&obj->mcast_lock);
1283
1284 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) {
1285 ind_tbl = uobj_get_obj_read(rwq_ind_table,
1286 UVERBS_OBJECT_RWQ_IND_TBL,
1287 cmd->rwq_ind_tbl_handle, attrs);
1288 if (!ind_tbl) {
1289 ret = -EINVAL;
1290 goto err_put;
1291 }
1292
1293 attr.rwq_ind_tbl = ind_tbl;
1294 }
1295
1296 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1297 ret = -EINVAL;
1298 goto err_put;
1299 }
1300
1301 if (ind_tbl && !cmd->max_send_wr)
1302 has_sq = false;
1303
1304 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1305 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle,
1306 attrs);
1307
1308 if (IS_ERR(xrcd_uobj)) {
1309 ret = -EINVAL;
1310 goto err_put;
1311 }
1312
1313 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1314 if (!xrcd) {
1315 ret = -EINVAL;
1316 goto err_put;
1317 }
1318 device = xrcd->device;
1319 } else {
1320 if (cmd->qp_type == IB_QPT_XRC_INI) {
1321 cmd->max_recv_wr = 0;
1322 cmd->max_recv_sge = 0;
1323 } else {
1324 if (cmd->is_srq) {
1325 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ,
1326 cmd->srq_handle, attrs);
1327 if (!srq || srq->srq_type == IB_SRQT_XRC) {
1328 ret = -EINVAL;
1329 goto err_put;
1330 }
1331 }
1332
1333 if (!ind_tbl) {
1334 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1335 rcq = uobj_get_obj_read(
1336 cq, UVERBS_OBJECT_CQ,
1337 cmd->recv_cq_handle, attrs);
1338 if (!rcq) {
1339 ret = -EINVAL;
1340 goto err_put;
1341 }
1342 }
1343 }
1344 }
1345
1346 if (has_sq)
1347 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
1348 cmd->send_cq_handle, attrs);
1349 if (!ind_tbl)
1350 rcq = rcq ?: scq;
1351 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle,
1352 attrs);
1353 if (!pd || (!scq && has_sq)) {
1354 ret = -EINVAL;
1355 goto err_put;
1356 }
1357
1358 device = pd->device;
1359 }
1360
1361 attr.event_handler = ib_uverbs_qp_event_handler;
1362 attr.qp_context = attrs->ufile;
1363 attr.send_cq = scq;
1364 attr.recv_cq = rcq;
1365 attr.srq = srq;
1366 attr.xrcd = xrcd;
1367 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1368 IB_SIGNAL_REQ_WR;
1369 attr.qp_type = cmd->qp_type;
1370 attr.create_flags = 0;
1371
1372 attr.cap.max_send_wr = cmd->max_send_wr;
1373 attr.cap.max_recv_wr = cmd->max_recv_wr;
1374 attr.cap.max_send_sge = cmd->max_send_sge;
1375 attr.cap.max_recv_sge = cmd->max_recv_sge;
1376 attr.cap.max_inline_data = cmd->max_inline_data;
1377
1378 obj->uevent.events_reported = 0;
1379 INIT_LIST_HEAD(&obj->uevent.event_list);
1380 INIT_LIST_HEAD(&obj->mcast_list);
1381
1382 attr.create_flags = cmd->create_flags;
1383 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1384 IB_QP_CREATE_CROSS_CHANNEL |
1385 IB_QP_CREATE_MANAGED_SEND |
1386 IB_QP_CREATE_MANAGED_RECV |
1387 IB_QP_CREATE_SCATTER_FCS |
1388 IB_QP_CREATE_CVLAN_STRIPPING |
1389 IB_QP_CREATE_SOURCE_QPN |
1390 IB_QP_CREATE_PCI_WRITE_END_PADDING)) {
1391 ret = -EINVAL;
1392 goto err_put;
1393 }
1394
1395 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) {
1396 if (!capable(CAP_NET_RAW)) {
1397 ret = -EPERM;
1398 goto err_put;
1399 }
1400
1401 attr.source_qpn = cmd->source_qpn;
1402 }
1403
1404 if (cmd->qp_type == IB_QPT_XRC_TGT)
1405 qp = ib_create_qp(pd, &attr);
1406 else
1407 qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata,
1408 &obj->uevent.uobject);
1409
1410 if (IS_ERR(qp)) {
1411 ret = PTR_ERR(qp);
1412 goto err_put;
1413 }
1414
1415 if (cmd->qp_type != IB_QPT_XRC_TGT) {
1416 ret = ib_create_qp_security(qp, device);
1417 if (ret)
1418 goto err_cb;
1419
1420 qp->real_qp = qp;
1421 qp->pd = pd;
1422 qp->send_cq = attr.send_cq;
1423 qp->recv_cq = attr.recv_cq;
1424 qp->srq = attr.srq;
1425 qp->rwq_ind_tbl = ind_tbl;
1426 qp->event_handler = attr.event_handler;
1427 qp->qp_context = attr.qp_context;
1428 qp->qp_type = attr.qp_type;
1429 atomic_set(&qp->usecnt, 0);
1430 atomic_inc(&pd->usecnt);
1431 qp->port = 0;
1432 if (attr.send_cq)
1433 atomic_inc(&attr.send_cq->usecnt);
1434 if (attr.recv_cq)
1435 atomic_inc(&attr.recv_cq->usecnt);
1436 if (attr.srq)
1437 atomic_inc(&attr.srq->usecnt);
1438 if (ind_tbl)
1439 atomic_inc(&ind_tbl->usecnt);
1440 } else {
1441 /* It is done in _ib_create_qp for other QP types */
1442 qp->uobject = &obj->uevent.uobject;
1443 }
1444
1445 obj->uevent.uobject.object = qp;
1446
1447 memset(&resp, 0, sizeof resp);
1448 resp.base.qpn = qp->qp_num;
1449 resp.base.qp_handle = obj->uevent.uobject.id;
1450 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1451 resp.base.max_send_sge = attr.cap.max_send_sge;
1452 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1453 resp.base.max_send_wr = attr.cap.max_send_wr;
1454 resp.base.max_inline_data = attr.cap.max_inline_data;
1455 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1456
1457 ret = uverbs_response(attrs, &resp, sizeof(resp));
1458 if (ret)
1459 goto err_cb;
1460
1461 if (xrcd) {
1462 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1463 uobject);
1464 atomic_inc(&obj->uxrcd->refcnt);
1465 uobj_put_read(xrcd_uobj);
1466 }
1467
1468 if (pd)
1469 uobj_put_obj_read(pd);
1470 if (scq)
1471 uobj_put_obj_read(scq);
1472 if (rcq && rcq != scq)
1473 uobj_put_obj_read(rcq);
1474 if (srq)
1475 uobj_put_obj_read(srq);
1476 if (ind_tbl)
1477 uobj_put_obj_read(ind_tbl);
1478
1479 return uobj_alloc_commit(&obj->uevent.uobject, attrs);
1480 err_cb:
1481 ib_destroy_qp(qp);
1482
1483 err_put:
1484 if (!IS_ERR(xrcd_uobj))
1485 uobj_put_read(xrcd_uobj);
1486 if (pd)
1487 uobj_put_obj_read(pd);
1488 if (scq)
1489 uobj_put_obj_read(scq);
1490 if (rcq && rcq != scq)
1491 uobj_put_obj_read(rcq);
1492 if (srq)
1493 uobj_put_obj_read(srq);
1494 if (ind_tbl)
1495 uobj_put_obj_read(ind_tbl);
1496
1497 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1498 return ret;
1499 }
1500
1501 static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs)
1502 {
1503 struct ib_uverbs_create_qp cmd;
1504 struct ib_uverbs_ex_create_qp cmd_ex;
1505 int ret;
1506
1507 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1508 if (ret)
1509 return ret;
1510
1511 memset(&cmd_ex, 0, sizeof(cmd_ex));
1512 cmd_ex.user_handle = cmd.user_handle;
1513 cmd_ex.pd_handle = cmd.pd_handle;
1514 cmd_ex.send_cq_handle = cmd.send_cq_handle;
1515 cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1516 cmd_ex.srq_handle = cmd.srq_handle;
1517 cmd_ex.max_send_wr = cmd.max_send_wr;
1518 cmd_ex.max_recv_wr = cmd.max_recv_wr;
1519 cmd_ex.max_send_sge = cmd.max_send_sge;
1520 cmd_ex.max_recv_sge = cmd.max_recv_sge;
1521 cmd_ex.max_inline_data = cmd.max_inline_data;
1522 cmd_ex.sq_sig_all = cmd.sq_sig_all;
1523 cmd_ex.qp_type = cmd.qp_type;
1524 cmd_ex.is_srq = cmd.is_srq;
1525
1526 return create_qp(attrs, &cmd_ex);
1527 }
1528
1529 static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs)
1530 {
1531 struct ib_uverbs_ex_create_qp cmd;
1532 int ret;
1533
1534 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1535 if (ret)
1536 return ret;
1537
1538 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1539 return -EINVAL;
1540
1541 if (cmd.reserved)
1542 return -EINVAL;
1543
1544 return create_qp(attrs, &cmd);
1545 }
1546
1547 static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs)
1548 {
1549 struct ib_uverbs_open_qp cmd;
1550 struct ib_uverbs_create_qp_resp resp;
1551 struct ib_uqp_object *obj;
1552 struct ib_xrcd *xrcd;
1553 struct ib_uobject *uninitialized_var(xrcd_uobj);
1554 struct ib_qp *qp;
1555 struct ib_qp_open_attr attr;
1556 int ret;
1557 struct ib_device *ib_dev;
1558
1559 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1560 if (ret)
1561 return ret;
1562
1563 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1564 &ib_dev);
1565 if (IS_ERR(obj))
1566 return PTR_ERR(obj);
1567
1568 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs);
1569 if (IS_ERR(xrcd_uobj)) {
1570 ret = -EINVAL;
1571 goto err_put;
1572 }
1573
1574 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1575 if (!xrcd) {
1576 ret = -EINVAL;
1577 goto err_xrcd;
1578 }
1579
1580 attr.event_handler = ib_uverbs_qp_event_handler;
1581 attr.qp_context = attrs->ufile;
1582 attr.qp_num = cmd.qpn;
1583 attr.qp_type = cmd.qp_type;
1584
1585 obj->uevent.events_reported = 0;
1586 INIT_LIST_HEAD(&obj->uevent.event_list);
1587 INIT_LIST_HEAD(&obj->mcast_list);
1588
1589 qp = ib_open_qp(xrcd, &attr);
1590 if (IS_ERR(qp)) {
1591 ret = PTR_ERR(qp);
1592 goto err_xrcd;
1593 }
1594
1595 obj->uevent.uobject.object = qp;
1596 obj->uevent.uobject.user_handle = cmd.user_handle;
1597
1598 memset(&resp, 0, sizeof resp);
1599 resp.qpn = qp->qp_num;
1600 resp.qp_handle = obj->uevent.uobject.id;
1601
1602 ret = uverbs_response(attrs, &resp, sizeof(resp));
1603 if (ret)
1604 goto err_destroy;
1605
1606 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1607 atomic_inc(&obj->uxrcd->refcnt);
1608 qp->uobject = &obj->uevent.uobject;
1609 uobj_put_read(xrcd_uobj);
1610
1611 return uobj_alloc_commit(&obj->uevent.uobject, attrs);
1612
1613 err_destroy:
1614 ib_destroy_qp(qp);
1615 err_xrcd:
1616 uobj_put_read(xrcd_uobj);
1617 err_put:
1618 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1619 return ret;
1620 }
1621
1622 static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr,
1623 struct rdma_ah_attr *rdma_attr)
1624 {
1625 const struct ib_global_route *grh;
1626
1627 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr);
1628 uverb_attr->sl = rdma_ah_get_sl(rdma_attr);
1629 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr);
1630 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr);
1631 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) &
1632 IB_AH_GRH);
1633 if (uverb_attr->is_global) {
1634 grh = rdma_ah_read_grh(rdma_attr);
1635 memcpy(uverb_attr->dgid, grh->dgid.raw, 16);
1636 uverb_attr->flow_label = grh->flow_label;
1637 uverb_attr->sgid_index = grh->sgid_index;
1638 uverb_attr->hop_limit = grh->hop_limit;
1639 uverb_attr->traffic_class = grh->traffic_class;
1640 }
1641 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr);
1642 }
1643
1644 static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs)
1645 {
1646 struct ib_uverbs_query_qp cmd;
1647 struct ib_uverbs_query_qp_resp resp;
1648 struct ib_qp *qp;
1649 struct ib_qp_attr *attr;
1650 struct ib_qp_init_attr *init_attr;
1651 int ret;
1652
1653 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1654 if (ret)
1655 return ret;
1656
1657 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1658 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1659 if (!attr || !init_attr) {
1660 ret = -ENOMEM;
1661 goto out;
1662 }
1663
1664 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1665 if (!qp) {
1666 ret = -EINVAL;
1667 goto out;
1668 }
1669
1670 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1671
1672 uobj_put_obj_read(qp);
1673
1674 if (ret)
1675 goto out;
1676
1677 memset(&resp, 0, sizeof resp);
1678
1679 resp.qp_state = attr->qp_state;
1680 resp.cur_qp_state = attr->cur_qp_state;
1681 resp.path_mtu = attr->path_mtu;
1682 resp.path_mig_state = attr->path_mig_state;
1683 resp.qkey = attr->qkey;
1684 resp.rq_psn = attr->rq_psn;
1685 resp.sq_psn = attr->sq_psn;
1686 resp.dest_qp_num = attr->dest_qp_num;
1687 resp.qp_access_flags = attr->qp_access_flags;
1688 resp.pkey_index = attr->pkey_index;
1689 resp.alt_pkey_index = attr->alt_pkey_index;
1690 resp.sq_draining = attr->sq_draining;
1691 resp.max_rd_atomic = attr->max_rd_atomic;
1692 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1693 resp.min_rnr_timer = attr->min_rnr_timer;
1694 resp.port_num = attr->port_num;
1695 resp.timeout = attr->timeout;
1696 resp.retry_cnt = attr->retry_cnt;
1697 resp.rnr_retry = attr->rnr_retry;
1698 resp.alt_port_num = attr->alt_port_num;
1699 resp.alt_timeout = attr->alt_timeout;
1700
1701 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr);
1702 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr);
1703
1704 resp.max_send_wr = init_attr->cap.max_send_wr;
1705 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1706 resp.max_send_sge = init_attr->cap.max_send_sge;
1707 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1708 resp.max_inline_data = init_attr->cap.max_inline_data;
1709 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1710
1711 ret = uverbs_response(attrs, &resp, sizeof(resp));
1712
1713 out:
1714 kfree(attr);
1715 kfree(init_attr);
1716
1717 return ret;
1718 }
1719
1720 /* Remove ignored fields set in the attribute mask */
1721 static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1722 {
1723 switch (qp_type) {
1724 case IB_QPT_XRC_INI:
1725 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1726 case IB_QPT_XRC_TGT:
1727 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1728 IB_QP_RNR_RETRY);
1729 default:
1730 return mask;
1731 }
1732 }
1733
1734 static void copy_ah_attr_from_uverbs(struct ib_device *dev,
1735 struct rdma_ah_attr *rdma_attr,
1736 struct ib_uverbs_qp_dest *uverb_attr)
1737 {
1738 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num);
1739 if (uverb_attr->is_global) {
1740 rdma_ah_set_grh(rdma_attr, NULL,
1741 uverb_attr->flow_label,
1742 uverb_attr->sgid_index,
1743 uverb_attr->hop_limit,
1744 uverb_attr->traffic_class);
1745 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid);
1746 } else {
1747 rdma_ah_set_ah_flags(rdma_attr, 0);
1748 }
1749 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid);
1750 rdma_ah_set_sl(rdma_attr, uverb_attr->sl);
1751 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits);
1752 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate);
1753 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num);
1754 rdma_ah_set_make_grd(rdma_attr, false);
1755 }
1756
1757 static int modify_qp(struct uverbs_attr_bundle *attrs,
1758 struct ib_uverbs_ex_modify_qp *cmd)
1759 {
1760 struct ib_qp_attr *attr;
1761 struct ib_qp *qp;
1762 int ret;
1763
1764 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1765 if (!attr)
1766 return -ENOMEM;
1767
1768 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle,
1769 attrs);
1770 if (!qp) {
1771 ret = -EINVAL;
1772 goto out;
1773 }
1774
1775 if ((cmd->base.attr_mask & IB_QP_PORT) &&
1776 !rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1777 ret = -EINVAL;
1778 goto release_qp;
1779 }
1780
1781 if ((cmd->base.attr_mask & IB_QP_AV)) {
1782 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) {
1783 ret = -EINVAL;
1784 goto release_qp;
1785 }
1786
1787 if (cmd->base.attr_mask & IB_QP_STATE &&
1788 cmd->base.qp_state == IB_QPS_RTR) {
1789 /* We are in INIT->RTR TRANSITION (if we are not,
1790 * this transition will be rejected in subsequent checks).
1791 * In the INIT->RTR transition, we cannot have IB_QP_PORT set,
1792 * but the IB_QP_STATE flag is required.
1793 *
1794 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver,
1795 * when IB_QP_AV is set, has required inclusion of a valid
1796 * port number in the primary AV. (AVs are created and handled
1797 * differently for infiniband and ethernet (RoCE) ports).
1798 *
1799 * Check the port number included in the primary AV against
1800 * the port number in the qp struct, which was set (and saved)
1801 * in the RST->INIT transition.
1802 */
1803 if (cmd->base.dest.port_num != qp->real_qp->port) {
1804 ret = -EINVAL;
1805 goto release_qp;
1806 }
1807 } else {
1808 /* We are in SQD->SQD. (If we are not, this transition will
1809 * be rejected later in the verbs layer checks).
1810 * Check for both IB_QP_PORT and IB_QP_AV, these can be set
1811 * together in the SQD->SQD transition.
1812 *
1813 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the
1814 * verbs layer driver does not track primary port changes
1815 * resulting from path migration. Thus, in SQD, if the primary
1816 * AV is modified, the primary port should also be modified).
1817 *
1818 * Note that in this transition, the IB_QP_STATE flag
1819 * is not allowed.
1820 */
1821 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1822 == (IB_QP_AV | IB_QP_PORT)) &&
1823 cmd->base.port_num != cmd->base.dest.port_num) {
1824 ret = -EINVAL;
1825 goto release_qp;
1826 }
1827 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1828 == IB_QP_AV) {
1829 cmd->base.attr_mask |= IB_QP_PORT;
1830 cmd->base.port_num = cmd->base.dest.port_num;
1831 }
1832 }
1833 }
1834
1835 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) &&
1836 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) ||
1837 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) ||
1838 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) {
1839 ret = -EINVAL;
1840 goto release_qp;
1841 }
1842
1843 if ((cmd->base.attr_mask & IB_QP_CUR_STATE &&
1844 cmd->base.cur_qp_state > IB_QPS_ERR) ||
1845 (cmd->base.attr_mask & IB_QP_STATE &&
1846 cmd->base.qp_state > IB_QPS_ERR)) {
1847 ret = -EINVAL;
1848 goto release_qp;
1849 }
1850
1851 if (cmd->base.attr_mask & IB_QP_STATE)
1852 attr->qp_state = cmd->base.qp_state;
1853 if (cmd->base.attr_mask & IB_QP_CUR_STATE)
1854 attr->cur_qp_state = cmd->base.cur_qp_state;
1855 if (cmd->base.attr_mask & IB_QP_PATH_MTU)
1856 attr->path_mtu = cmd->base.path_mtu;
1857 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE)
1858 attr->path_mig_state = cmd->base.path_mig_state;
1859 if (cmd->base.attr_mask & IB_QP_QKEY)
1860 attr->qkey = cmd->base.qkey;
1861 if (cmd->base.attr_mask & IB_QP_RQ_PSN)
1862 attr->rq_psn = cmd->base.rq_psn;
1863 if (cmd->base.attr_mask & IB_QP_SQ_PSN)
1864 attr->sq_psn = cmd->base.sq_psn;
1865 if (cmd->base.attr_mask & IB_QP_DEST_QPN)
1866 attr->dest_qp_num = cmd->base.dest_qp_num;
1867 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS)
1868 attr->qp_access_flags = cmd->base.qp_access_flags;
1869 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX)
1870 attr->pkey_index = cmd->base.pkey_index;
1871 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
1872 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
1873 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC)
1874 attr->max_rd_atomic = cmd->base.max_rd_atomic;
1875 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
1876 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
1877 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER)
1878 attr->min_rnr_timer = cmd->base.min_rnr_timer;
1879 if (cmd->base.attr_mask & IB_QP_PORT)
1880 attr->port_num = cmd->base.port_num;
1881 if (cmd->base.attr_mask & IB_QP_TIMEOUT)
1882 attr->timeout = cmd->base.timeout;
1883 if (cmd->base.attr_mask & IB_QP_RETRY_CNT)
1884 attr->retry_cnt = cmd->base.retry_cnt;
1885 if (cmd->base.attr_mask & IB_QP_RNR_RETRY)
1886 attr->rnr_retry = cmd->base.rnr_retry;
1887 if (cmd->base.attr_mask & IB_QP_ALT_PATH) {
1888 attr->alt_port_num = cmd->base.alt_port_num;
1889 attr->alt_timeout = cmd->base.alt_timeout;
1890 attr->alt_pkey_index = cmd->base.alt_pkey_index;
1891 }
1892 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT)
1893 attr->rate_limit = cmd->rate_limit;
1894
1895 if (cmd->base.attr_mask & IB_QP_AV)
1896 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,
1897 &cmd->base.dest);
1898
1899 if (cmd->base.attr_mask & IB_QP_ALT_PATH)
1900 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr,
1901 &cmd->base.alt_dest);
1902
1903 ret = ib_modify_qp_with_udata(qp, attr,
1904 modify_qp_mask(qp->qp_type,
1905 cmd->base.attr_mask),
1906 &attrs->driver_udata);
1907
1908 release_qp:
1909 uobj_put_obj_read(qp);
1910 out:
1911 kfree(attr);
1912
1913 return ret;
1914 }
1915
1916 static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs)
1917 {
1918 struct ib_uverbs_ex_modify_qp cmd;
1919 int ret;
1920
1921 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base));
1922 if (ret)
1923 return ret;
1924
1925 if (cmd.base.attr_mask &
1926 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1))
1927 return -EOPNOTSUPP;
1928
1929 return modify_qp(attrs, &cmd);
1930 }
1931
1932 static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs)
1933 {
1934 struct ib_uverbs_ex_modify_qp cmd;
1935 struct ib_uverbs_ex_modify_qp_resp resp = {
1936 .response_length = uverbs_response_length(attrs, sizeof(resp))
1937 };
1938 int ret;
1939
1940 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1941 if (ret)
1942 return ret;
1943
1944 /*
1945 * Last bit is reserved for extending the attr_mask by
1946 * using another field.
1947 */
1948 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
1949
1950 if (cmd.base.attr_mask &
1951 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1))
1952 return -EOPNOTSUPP;
1953
1954 ret = modify_qp(attrs, &cmd);
1955 if (ret)
1956 return ret;
1957
1958 return uverbs_response(attrs, &resp, sizeof(resp));
1959 }
1960
1961 static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs)
1962 {
1963 struct ib_uverbs_destroy_qp cmd;
1964 struct ib_uverbs_destroy_qp_resp resp;
1965 struct ib_uobject *uobj;
1966 struct ib_uqp_object *obj;
1967 int ret;
1968
1969 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1970 if (ret)
1971 return ret;
1972
1973 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1974 if (IS_ERR(uobj))
1975 return PTR_ERR(uobj);
1976
1977 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
1978 memset(&resp, 0, sizeof(resp));
1979 resp.events_reported = obj->uevent.events_reported;
1980
1981 uobj_put_destroy(uobj);
1982
1983 return uverbs_response(attrs, &resp, sizeof(resp));
1984 }
1985
1986 static void *alloc_wr(size_t wr_size, __u32 num_sge)
1987 {
1988 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) /
1989 sizeof (struct ib_sge))
1990 return NULL;
1991
1992 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) +
1993 num_sge * sizeof (struct ib_sge), GFP_KERNEL);
1994 }
1995
1996 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs)
1997 {
1998 struct ib_uverbs_post_send cmd;
1999 struct ib_uverbs_post_send_resp resp;
2000 struct ib_uverbs_send_wr *user_wr;
2001 struct ib_send_wr *wr = NULL, *last, *next;
2002 const struct ib_send_wr *bad_wr;
2003 struct ib_qp *qp;
2004 int i, sg_ind;
2005 int is_ud;
2006 int ret, ret2;
2007 size_t next_size;
2008 const struct ib_sge __user *sgls;
2009 const void __user *wqes;
2010 struct uverbs_req_iter iter;
2011
2012 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2013 if (ret)
2014 return ret;
2015 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count);
2016 if (IS_ERR(wqes))
2017 return PTR_ERR(wqes);
2018 sgls = uverbs_request_next_ptr(
2019 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge));
2020 if (IS_ERR(sgls))
2021 return PTR_ERR(sgls);
2022 ret = uverbs_request_finish(&iter);
2023 if (ret)
2024 return ret;
2025
2026 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2027 if (!user_wr)
2028 return -ENOMEM;
2029
2030 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2031 if (!qp) {
2032 ret = -EINVAL;
2033 goto out;
2034 }
2035
2036 is_ud = qp->qp_type == IB_QPT_UD;
2037 sg_ind = 0;
2038 last = NULL;
2039 for (i = 0; i < cmd.wr_count; ++i) {
2040 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size,
2041 cmd.wqe_size)) {
2042 ret = -EFAULT;
2043 goto out_put;
2044 }
2045
2046 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2047 ret = -EINVAL;
2048 goto out_put;
2049 }
2050
2051 if (is_ud) {
2052 struct ib_ud_wr *ud;
2053
2054 if (user_wr->opcode != IB_WR_SEND &&
2055 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2056 ret = -EINVAL;
2057 goto out_put;
2058 }
2059
2060 next_size = sizeof(*ud);
2061 ud = alloc_wr(next_size, user_wr->num_sge);
2062 if (!ud) {
2063 ret = -ENOMEM;
2064 goto out_put;
2065 }
2066
2067 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH,
2068 user_wr->wr.ud.ah, attrs);
2069 if (!ud->ah) {
2070 kfree(ud);
2071 ret = -EINVAL;
2072 goto out_put;
2073 }
2074 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2075 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2076
2077 next = &ud->wr;
2078 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2079 user_wr->opcode == IB_WR_RDMA_WRITE ||
2080 user_wr->opcode == IB_WR_RDMA_READ) {
2081 struct ib_rdma_wr *rdma;
2082
2083 next_size = sizeof(*rdma);
2084 rdma = alloc_wr(next_size, user_wr->num_sge);
2085 if (!rdma) {
2086 ret = -ENOMEM;
2087 goto out_put;
2088 }
2089
2090 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2091 rdma->rkey = user_wr->wr.rdma.rkey;
2092
2093 next = &rdma->wr;
2094 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2095 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2096 struct ib_atomic_wr *atomic;
2097
2098 next_size = sizeof(*atomic);
2099 atomic = alloc_wr(next_size, user_wr->num_sge);
2100 if (!atomic) {
2101 ret = -ENOMEM;
2102 goto out_put;
2103 }
2104
2105 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2106 atomic->compare_add = user_wr->wr.atomic.compare_add;
2107 atomic->swap = user_wr->wr.atomic.swap;
2108 atomic->rkey = user_wr->wr.atomic.rkey;
2109
2110 next = &atomic->wr;
2111 } else if (user_wr->opcode == IB_WR_SEND ||
2112 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2113 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2114 next_size = sizeof(*next);
2115 next = alloc_wr(next_size, user_wr->num_sge);
2116 if (!next) {
2117 ret = -ENOMEM;
2118 goto out_put;
2119 }
2120 } else {
2121 ret = -EINVAL;
2122 goto out_put;
2123 }
2124
2125 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2126 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2127 next->ex.imm_data =
2128 (__be32 __force) user_wr->ex.imm_data;
2129 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2130 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2131 }
2132
2133 if (!last)
2134 wr = next;
2135 else
2136 last->next = next;
2137 last = next;
2138
2139 next->next = NULL;
2140 next->wr_id = user_wr->wr_id;
2141 next->num_sge = user_wr->num_sge;
2142 next->opcode = user_wr->opcode;
2143 next->send_flags = user_wr->send_flags;
2144
2145 if (next->num_sge) {
2146 next->sg_list = (void *) next +
2147 ALIGN(next_size, sizeof(struct ib_sge));
2148 if (copy_from_user(next->sg_list, sgls + sg_ind,
2149 next->num_sge *
2150 sizeof(struct ib_sge))) {
2151 ret = -EFAULT;
2152 goto out_put;
2153 }
2154 sg_ind += next->num_sge;
2155 } else
2156 next->sg_list = NULL;
2157 }
2158
2159 resp.bad_wr = 0;
2160 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr);
2161 if (ret)
2162 for (next = wr; next; next = next->next) {
2163 ++resp.bad_wr;
2164 if (next == bad_wr)
2165 break;
2166 }
2167
2168 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2169 if (ret2)
2170 ret = ret2;
2171
2172 out_put:
2173 uobj_put_obj_read(qp);
2174
2175 while (wr) {
2176 if (is_ud && ud_wr(wr)->ah)
2177 uobj_put_obj_read(ud_wr(wr)->ah);
2178 next = wr->next;
2179 kfree(wr);
2180 wr = next;
2181 }
2182
2183 out:
2184 kfree(user_wr);
2185
2186 return ret;
2187 }
2188
2189 static struct ib_recv_wr *
2190 ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
2191 u32 wqe_size, u32 sge_count)
2192 {
2193 struct ib_uverbs_recv_wr *user_wr;
2194 struct ib_recv_wr *wr = NULL, *last, *next;
2195 int sg_ind;
2196 int i;
2197 int ret;
2198 const struct ib_sge __user *sgls;
2199 const void __user *wqes;
2200
2201 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
2202 return ERR_PTR(-EINVAL);
2203
2204 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count);
2205 if (IS_ERR(wqes))
2206 return ERR_CAST(wqes);
2207 sgls = uverbs_request_next_ptr(
2208 iter, sge_count * sizeof(struct ib_uverbs_sge));
2209 if (IS_ERR(sgls))
2210 return ERR_CAST(sgls);
2211 ret = uverbs_request_finish(iter);
2212 if (ret)
2213 return ERR_PTR(ret);
2214
2215 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2216 if (!user_wr)
2217 return ERR_PTR(-ENOMEM);
2218
2219 sg_ind = 0;
2220 last = NULL;
2221 for (i = 0; i < wr_count; ++i) {
2222 if (copy_from_user(user_wr, wqes + i * wqe_size,
2223 wqe_size)) {
2224 ret = -EFAULT;
2225 goto err;
2226 }
2227
2228 if (user_wr->num_sge + sg_ind > sge_count) {
2229 ret = -EINVAL;
2230 goto err;
2231 }
2232
2233 if (user_wr->num_sge >=
2234 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) /
2235 sizeof (struct ib_sge)) {
2236 ret = -EINVAL;
2237 goto err;
2238 }
2239
2240 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2241 user_wr->num_sge * sizeof (struct ib_sge),
2242 GFP_KERNEL);
2243 if (!next) {
2244 ret = -ENOMEM;
2245 goto err;
2246 }
2247
2248 if (!last)
2249 wr = next;
2250 else
2251 last->next = next;
2252 last = next;
2253
2254 next->next = NULL;
2255 next->wr_id = user_wr->wr_id;
2256 next->num_sge = user_wr->num_sge;
2257
2258 if (next->num_sge) {
2259 next->sg_list = (void *) next +
2260 ALIGN(sizeof *next, sizeof (struct ib_sge));
2261 if (copy_from_user(next->sg_list, sgls + sg_ind,
2262 next->num_sge *
2263 sizeof(struct ib_sge))) {
2264 ret = -EFAULT;
2265 goto err;
2266 }
2267 sg_ind += next->num_sge;
2268 } else
2269 next->sg_list = NULL;
2270 }
2271
2272 kfree(user_wr);
2273 return wr;
2274
2275 err:
2276 kfree(user_wr);
2277
2278 while (wr) {
2279 next = wr->next;
2280 kfree(wr);
2281 wr = next;
2282 }
2283
2284 return ERR_PTR(ret);
2285 }
2286
2287 static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs)
2288 {
2289 struct ib_uverbs_post_recv cmd;
2290 struct ib_uverbs_post_recv_resp resp;
2291 struct ib_recv_wr *wr, *next;
2292 const struct ib_recv_wr *bad_wr;
2293 struct ib_qp *qp;
2294 int ret, ret2;
2295 struct uverbs_req_iter iter;
2296
2297 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2298 if (ret)
2299 return ret;
2300
2301 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2302 cmd.sge_count);
2303 if (IS_ERR(wr))
2304 return PTR_ERR(wr);
2305
2306 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2307 if (!qp) {
2308 ret = -EINVAL;
2309 goto out;
2310 }
2311
2312 resp.bad_wr = 0;
2313 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr);
2314
2315 uobj_put_obj_read(qp);
2316 if (ret) {
2317 for (next = wr; next; next = next->next) {
2318 ++resp.bad_wr;
2319 if (next == bad_wr)
2320 break;
2321 }
2322 }
2323
2324 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2325 if (ret2)
2326 ret = ret2;
2327 out:
2328 while (wr) {
2329 next = wr->next;
2330 kfree(wr);
2331 wr = next;
2332 }
2333
2334 return ret;
2335 }
2336
2337 static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs)
2338 {
2339 struct ib_uverbs_post_srq_recv cmd;
2340 struct ib_uverbs_post_srq_recv_resp resp;
2341 struct ib_recv_wr *wr, *next;
2342 const struct ib_recv_wr *bad_wr;
2343 struct ib_srq *srq;
2344 int ret, ret2;
2345 struct uverbs_req_iter iter;
2346
2347 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2348 if (ret)
2349 return ret;
2350
2351 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2352 cmd.sge_count);
2353 if (IS_ERR(wr))
2354 return PTR_ERR(wr);
2355
2356 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
2357 if (!srq) {
2358 ret = -EINVAL;
2359 goto out;
2360 }
2361
2362 resp.bad_wr = 0;
2363 ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr);
2364
2365 uobj_put_obj_read(srq);
2366
2367 if (ret)
2368 for (next = wr; next; next = next->next) {
2369 ++resp.bad_wr;
2370 if (next == bad_wr)
2371 break;
2372 }
2373
2374 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2375 if (ret2)
2376 ret = ret2;
2377
2378 out:
2379 while (wr) {
2380 next = wr->next;
2381 kfree(wr);
2382 wr = next;
2383 }
2384
2385 return ret;
2386 }
2387
2388 static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs)
2389 {
2390 struct ib_uverbs_create_ah cmd;
2391 struct ib_uverbs_create_ah_resp resp;
2392 struct ib_uobject *uobj;
2393 struct ib_pd *pd;
2394 struct ib_ah *ah;
2395 struct rdma_ah_attr attr = {};
2396 int ret;
2397 struct ib_device *ib_dev;
2398
2399 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2400 if (ret)
2401 return ret;
2402
2403 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev);
2404 if (IS_ERR(uobj))
2405 return PTR_ERR(uobj);
2406
2407 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) {
2408 ret = -EINVAL;
2409 goto err;
2410 }
2411
2412 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2413 if (!pd) {
2414 ret = -EINVAL;
2415 goto err;
2416 }
2417
2418 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2419 rdma_ah_set_make_grd(&attr, false);
2420 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2421 rdma_ah_set_sl(&attr, cmd.attr.sl);
2422 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2423 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2424 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2425
2426 if (cmd.attr.is_global) {
2427 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2428 cmd.attr.grh.sgid_index,
2429 cmd.attr.grh.hop_limit,
2430 cmd.attr.grh.traffic_class);
2431 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2432 } else {
2433 rdma_ah_set_ah_flags(&attr, 0);
2434 }
2435
2436 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata);
2437 if (IS_ERR(ah)) {
2438 ret = PTR_ERR(ah);
2439 goto err_put;
2440 }
2441
2442 ah->uobject = uobj;
2443 uobj->user_handle = cmd.user_handle;
2444 uobj->object = ah;
2445
2446 resp.ah_handle = uobj->id;
2447
2448 ret = uverbs_response(attrs, &resp, sizeof(resp));
2449 if (ret)
2450 goto err_copy;
2451
2452 uobj_put_obj_read(pd);
2453 return uobj_alloc_commit(uobj, attrs);
2454
2455 err_copy:
2456 rdma_destroy_ah(ah, RDMA_DESTROY_AH_SLEEPABLE);
2457
2458 err_put:
2459 uobj_put_obj_read(pd);
2460
2461 err:
2462 uobj_alloc_abort(uobj, attrs);
2463 return ret;
2464 }
2465
2466 static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs)
2467 {
2468 struct ib_uverbs_destroy_ah cmd;
2469 int ret;
2470
2471 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2472 if (ret)
2473 return ret;
2474
2475 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs);
2476 }
2477
2478 static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs)
2479 {
2480 struct ib_uverbs_attach_mcast cmd;
2481 struct ib_qp *qp;
2482 struct ib_uqp_object *obj;
2483 struct ib_uverbs_mcast_entry *mcast;
2484 int ret;
2485
2486 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2487 if (ret)
2488 return ret;
2489
2490 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2491 if (!qp)
2492 return -EINVAL;
2493
2494 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2495
2496 mutex_lock(&obj->mcast_lock);
2497 list_for_each_entry(mcast, &obj->mcast_list, list)
2498 if (cmd.mlid == mcast->lid &&
2499 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2500 ret = 0;
2501 goto out_put;
2502 }
2503
2504 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2505 if (!mcast) {
2506 ret = -ENOMEM;
2507 goto out_put;
2508 }
2509
2510 mcast->lid = cmd.mlid;
2511 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2512
2513 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2514 if (!ret)
2515 list_add_tail(&mcast->list, &obj->mcast_list);
2516 else
2517 kfree(mcast);
2518
2519 out_put:
2520 mutex_unlock(&obj->mcast_lock);
2521 uobj_put_obj_read(qp);
2522
2523 return ret;
2524 }
2525
2526 static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs)
2527 {
2528 struct ib_uverbs_detach_mcast cmd;
2529 struct ib_uqp_object *obj;
2530 struct ib_qp *qp;
2531 struct ib_uverbs_mcast_entry *mcast;
2532 int ret = -EINVAL;
2533 bool found = false;
2534
2535 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2536 if (ret)
2537 return ret;
2538
2539 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2540 if (!qp)
2541 return -EINVAL;
2542
2543 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2544 mutex_lock(&obj->mcast_lock);
2545
2546 list_for_each_entry(mcast, &obj->mcast_list, list)
2547 if (cmd.mlid == mcast->lid &&
2548 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2549 list_del(&mcast->list);
2550 kfree(mcast);
2551 found = true;
2552 break;
2553 }
2554
2555 if (!found) {
2556 ret = -EINVAL;
2557 goto out_put;
2558 }
2559
2560 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2561
2562 out_put:
2563 mutex_unlock(&obj->mcast_lock);
2564 uobj_put_obj_read(qp);
2565 return ret;
2566 }
2567
2568 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs)
2569 {
2570 struct ib_uflow_resources *resources;
2571
2572 resources = kzalloc(sizeof(*resources), GFP_KERNEL);
2573
2574 if (!resources)
2575 return NULL;
2576
2577 if (!num_specs)
2578 goto out;
2579
2580 resources->counters =
2581 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
2582 resources->collection =
2583 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL);
2584
2585 if (!resources->counters || !resources->collection)
2586 goto err;
2587
2588 out:
2589 resources->max = num_specs;
2590 return resources;
2591
2592 err:
2593 kfree(resources->counters);
2594 kfree(resources);
2595
2596 return NULL;
2597 }
2598 EXPORT_SYMBOL(flow_resources_alloc);
2599
2600 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
2601 {
2602 unsigned int i;
2603
2604 if (!uflow_res)
2605 return;
2606
2607 for (i = 0; i < uflow_res->collection_num; i++)
2608 atomic_dec(&uflow_res->collection[i]->usecnt);
2609
2610 for (i = 0; i < uflow_res->counters_num; i++)
2611 atomic_dec(&uflow_res->counters[i]->usecnt);
2612
2613 kfree(uflow_res->collection);
2614 kfree(uflow_res->counters);
2615 kfree(uflow_res);
2616 }
2617 EXPORT_SYMBOL(ib_uverbs_flow_resources_free);
2618
2619 void flow_resources_add(struct ib_uflow_resources *uflow_res,
2620 enum ib_flow_spec_type type,
2621 void *ibobj)
2622 {
2623 WARN_ON(uflow_res->num >= uflow_res->max);
2624
2625 switch (type) {
2626 case IB_FLOW_SPEC_ACTION_HANDLE:
2627 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt);
2628 uflow_res->collection[uflow_res->collection_num++] =
2629 (struct ib_flow_action *)ibobj;
2630 break;
2631 case IB_FLOW_SPEC_ACTION_COUNT:
2632 atomic_inc(&((struct ib_counters *)ibobj)->usecnt);
2633 uflow_res->counters[uflow_res->counters_num++] =
2634 (struct ib_counters *)ibobj;
2635 break;
2636 default:
2637 WARN_ON(1);
2638 }
2639
2640 uflow_res->num++;
2641 }
2642 EXPORT_SYMBOL(flow_resources_add);
2643
2644 static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
2645 struct ib_uverbs_flow_spec *kern_spec,
2646 union ib_flow_spec *ib_spec,
2647 struct ib_uflow_resources *uflow_res)
2648 {
2649 ib_spec->type = kern_spec->type;
2650 switch (ib_spec->type) {
2651 case IB_FLOW_SPEC_ACTION_TAG:
2652 if (kern_spec->flow_tag.size !=
2653 sizeof(struct ib_uverbs_flow_spec_action_tag))
2654 return -EINVAL;
2655
2656 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2657 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2658 break;
2659 case IB_FLOW_SPEC_ACTION_DROP:
2660 if (kern_spec->drop.size !=
2661 sizeof(struct ib_uverbs_flow_spec_action_drop))
2662 return -EINVAL;
2663
2664 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2665 break;
2666 case IB_FLOW_SPEC_ACTION_HANDLE:
2667 if (kern_spec->action.size !=
2668 sizeof(struct ib_uverbs_flow_spec_action_handle))
2669 return -EOPNOTSUPP;
2670 ib_spec->action.act = uobj_get_obj_read(flow_action,
2671 UVERBS_OBJECT_FLOW_ACTION,
2672 kern_spec->action.handle,
2673 attrs);
2674 if (!ib_spec->action.act)
2675 return -EINVAL;
2676 ib_spec->action.size =
2677 sizeof(struct ib_flow_spec_action_handle);
2678 flow_resources_add(uflow_res,
2679 IB_FLOW_SPEC_ACTION_HANDLE,
2680 ib_spec->action.act);
2681 uobj_put_obj_read(ib_spec->action.act);
2682 break;
2683 case IB_FLOW_SPEC_ACTION_COUNT:
2684 if (kern_spec->flow_count.size !=
2685 sizeof(struct ib_uverbs_flow_spec_action_count))
2686 return -EINVAL;
2687 ib_spec->flow_count.counters =
2688 uobj_get_obj_read(counters,
2689 UVERBS_OBJECT_COUNTERS,
2690 kern_spec->flow_count.handle,
2691 attrs);
2692 if (!ib_spec->flow_count.counters)
2693 return -EINVAL;
2694 ib_spec->flow_count.size =
2695 sizeof(struct ib_flow_spec_action_count);
2696 flow_resources_add(uflow_res,
2697 IB_FLOW_SPEC_ACTION_COUNT,
2698 ib_spec->flow_count.counters);
2699 uobj_put_obj_read(ib_spec->flow_count.counters);
2700 break;
2701 default:
2702 return -EINVAL;
2703 }
2704 return 0;
2705 }
2706
2707 static size_t kern_spec_filter_sz(const struct ib_uverbs_flow_spec_hdr *spec)
2708 {
2709 /* Returns user space filter size, includes padding */
2710 return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2;
2711 }
2712
2713 static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
2714 u16 ib_real_filter_sz)
2715 {
2716 /*
2717 * User space filter structures must be 64 bit aligned, otherwise this
2718 * may pass, but we won't handle additional new attributes.
2719 */
2720
2721 if (kern_filter_size > ib_real_filter_sz) {
2722 if (memchr_inv(kern_spec_filter +
2723 ib_real_filter_sz, 0,
2724 kern_filter_size - ib_real_filter_sz))
2725 return -EINVAL;
2726 return ib_real_filter_sz;
2727 }
2728 return kern_filter_size;
2729 }
2730
2731 int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
2732 const void *kern_spec_mask,
2733 const void *kern_spec_val,
2734 size_t kern_filter_sz,
2735 union ib_flow_spec *ib_spec)
2736 {
2737 ssize_t actual_filter_sz;
2738 ssize_t ib_filter_sz;
2739
2740 /* User flow spec size must be aligned to 4 bytes */
2741 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2742 return -EINVAL;
2743
2744 ib_spec->type = type;
2745
2746 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2747 return -EINVAL;
2748
2749 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2750 case IB_FLOW_SPEC_ETH:
2751 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2752 actual_filter_sz = spec_filter_size(kern_spec_mask,
2753 kern_filter_sz,
2754 ib_filter_sz);
2755 if (actual_filter_sz <= 0)
2756 return -EINVAL;
2757 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2758 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2759 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2760 break;
2761 case IB_FLOW_SPEC_IPV4:
2762 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz);
2763 actual_filter_sz = spec_filter_size(kern_spec_mask,
2764 kern_filter_sz,
2765 ib_filter_sz);
2766 if (actual_filter_sz <= 0)
2767 return -EINVAL;
2768 ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
2769 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2770 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2771 break;
2772 case IB_FLOW_SPEC_IPV6:
2773 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz);
2774 actual_filter_sz = spec_filter_size(kern_spec_mask,
2775 kern_filter_sz,
2776 ib_filter_sz);
2777 if (actual_filter_sz <= 0)
2778 return -EINVAL;
2779 ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
2780 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2781 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2782
2783 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2784 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2785 return -EINVAL;
2786 break;
2787 case IB_FLOW_SPEC_TCP:
2788 case IB_FLOW_SPEC_UDP:
2789 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
2790 actual_filter_sz = spec_filter_size(kern_spec_mask,
2791 kern_filter_sz,
2792 ib_filter_sz);
2793 if (actual_filter_sz <= 0)
2794 return -EINVAL;
2795 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2796 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2797 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2798 break;
2799 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2800 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz);
2801 actual_filter_sz = spec_filter_size(kern_spec_mask,
2802 kern_filter_sz,
2803 ib_filter_sz);
2804 if (actual_filter_sz <= 0)
2805 return -EINVAL;
2806 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2807 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2808 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2809
2810 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2811 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2812 return -EINVAL;
2813 break;
2814 case IB_FLOW_SPEC_ESP:
2815 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz);
2816 actual_filter_sz = spec_filter_size(kern_spec_mask,
2817 kern_filter_sz,
2818 ib_filter_sz);
2819 if (actual_filter_sz <= 0)
2820 return -EINVAL;
2821 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp);
2822 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz);
2823 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz);
2824 break;
2825 case IB_FLOW_SPEC_GRE:
2826 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz);
2827 actual_filter_sz = spec_filter_size(kern_spec_mask,
2828 kern_filter_sz,
2829 ib_filter_sz);
2830 if (actual_filter_sz <= 0)
2831 return -EINVAL;
2832 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre);
2833 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz);
2834 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz);
2835 break;
2836 case IB_FLOW_SPEC_MPLS:
2837 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz);
2838 actual_filter_sz = spec_filter_size(kern_spec_mask,
2839 kern_filter_sz,
2840 ib_filter_sz);
2841 if (actual_filter_sz <= 0)
2842 return -EINVAL;
2843 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls);
2844 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz);
2845 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz);
2846 break;
2847 default:
2848 return -EINVAL;
2849 }
2850 return 0;
2851 }
2852
2853 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2854 union ib_flow_spec *ib_spec)
2855 {
2856 ssize_t kern_filter_sz;
2857 void *kern_spec_mask;
2858 void *kern_spec_val;
2859
2860 kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr);
2861
2862 kern_spec_val = (void *)kern_spec +
2863 sizeof(struct ib_uverbs_flow_spec_hdr);
2864 kern_spec_mask = kern_spec_val + kern_filter_sz;
2865
2866 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
2867 kern_spec_mask,
2868 kern_spec_val,
2869 kern_filter_sz, ib_spec);
2870 }
2871
2872 static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs,
2873 struct ib_uverbs_flow_spec *kern_spec,
2874 union ib_flow_spec *ib_spec,
2875 struct ib_uflow_resources *uflow_res)
2876 {
2877 if (kern_spec->reserved)
2878 return -EINVAL;
2879
2880 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2881 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec,
2882 uflow_res);
2883 else
2884 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2885 }
2886
2887 static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs)
2888 {
2889 struct ib_uverbs_ex_create_wq cmd;
2890 struct ib_uverbs_ex_create_wq_resp resp = {};
2891 struct ib_uwq_object *obj;
2892 int err = 0;
2893 struct ib_cq *cq;
2894 struct ib_pd *pd;
2895 struct ib_wq *wq;
2896 struct ib_wq_init_attr wq_init_attr = {};
2897 struct ib_device *ib_dev;
2898
2899 err = uverbs_request(attrs, &cmd, sizeof(cmd));
2900 if (err)
2901 return err;
2902
2903 if (cmd.comp_mask)
2904 return -EOPNOTSUPP;
2905
2906 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs,
2907 &ib_dev);
2908 if (IS_ERR(obj))
2909 return PTR_ERR(obj);
2910
2911 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2912 if (!pd) {
2913 err = -EINVAL;
2914 goto err_uobj;
2915 }
2916
2917 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
2918 if (!cq) {
2919 err = -EINVAL;
2920 goto err_put_pd;
2921 }
2922
2923 wq_init_attr.cq = cq;
2924 wq_init_attr.max_sge = cmd.max_sge;
2925 wq_init_attr.max_wr = cmd.max_wr;
2926 wq_init_attr.wq_context = attrs->ufile;
2927 wq_init_attr.wq_type = cmd.wq_type;
2928 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2929 wq_init_attr.create_flags = cmd.create_flags;
2930 obj->uevent.events_reported = 0;
2931 INIT_LIST_HEAD(&obj->uevent.event_list);
2932
2933 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata);
2934 if (IS_ERR(wq)) {
2935 err = PTR_ERR(wq);
2936 goto err_put_cq;
2937 }
2938
2939 wq->uobject = &obj->uevent.uobject;
2940 obj->uevent.uobject.object = wq;
2941 wq->wq_type = wq_init_attr.wq_type;
2942 wq->cq = cq;
2943 wq->pd = pd;
2944 wq->device = pd->device;
2945 wq->wq_context = wq_init_attr.wq_context;
2946 atomic_set(&wq->usecnt, 0);
2947 atomic_inc(&pd->usecnt);
2948 atomic_inc(&cq->usecnt);
2949 wq->uobject = &obj->uevent.uobject;
2950 obj->uevent.uobject.object = wq;
2951
2952 memset(&resp, 0, sizeof(resp));
2953 resp.wq_handle = obj->uevent.uobject.id;
2954 resp.max_sge = wq_init_attr.max_sge;
2955 resp.max_wr = wq_init_attr.max_wr;
2956 resp.wqn = wq->wq_num;
2957 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2958 err = uverbs_response(attrs, &resp, sizeof(resp));
2959 if (err)
2960 goto err_copy;
2961
2962 uobj_put_obj_read(pd);
2963 uobj_put_obj_read(cq);
2964 return uobj_alloc_commit(&obj->uevent.uobject, attrs);
2965
2966 err_copy:
2967 ib_destroy_wq(wq, &attrs->driver_udata);
2968 err_put_cq:
2969 uobj_put_obj_read(cq);
2970 err_put_pd:
2971 uobj_put_obj_read(pd);
2972 err_uobj:
2973 uobj_alloc_abort(&obj->uevent.uobject, attrs);
2974
2975 return err;
2976 }
2977
2978 static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs)
2979 {
2980 struct ib_uverbs_ex_destroy_wq cmd;
2981 struct ib_uverbs_ex_destroy_wq_resp resp = {};
2982 struct ib_uobject *uobj;
2983 struct ib_uwq_object *obj;
2984 int ret;
2985
2986 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2987 if (ret)
2988 return ret;
2989
2990 if (cmd.comp_mask)
2991 return -EOPNOTSUPP;
2992
2993 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2994 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
2995 if (IS_ERR(uobj))
2996 return PTR_ERR(uobj);
2997
2998 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
2999 resp.events_reported = obj->uevent.events_reported;
3000
3001 uobj_put_destroy(uobj);
3002
3003 return uverbs_response(attrs, &resp, sizeof(resp));
3004 }
3005
3006 static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs)
3007 {
3008 struct ib_uverbs_ex_modify_wq cmd;
3009 struct ib_wq *wq;
3010 struct ib_wq_attr wq_attr = {};
3011 int ret;
3012
3013 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3014 if (ret)
3015 return ret;
3016
3017 if (!cmd.attr_mask)
3018 return -EINVAL;
3019
3020 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3021 return -EINVAL;
3022
3023 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3024 if (!wq)
3025 return -EINVAL;
3026
3027 wq_attr.curr_wq_state = cmd.curr_wq_state;
3028 wq_attr.wq_state = cmd.wq_state;
3029 if (cmd.attr_mask & IB_WQ_FLAGS) {
3030 wq_attr.flags = cmd.flags;
3031 wq_attr.flags_mask = cmd.flags_mask;
3032 }
3033 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask,
3034 &attrs->driver_udata);
3035 uobj_put_obj_read(wq);
3036 return ret;
3037 }
3038
3039 static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3040 {
3041 struct ib_uverbs_ex_create_rwq_ind_table cmd;
3042 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3043 struct ib_uobject *uobj;
3044 int err;
3045 struct ib_rwq_ind_table_init_attr init_attr = {};
3046 struct ib_rwq_ind_table *rwq_ind_tbl;
3047 struct ib_wq **wqs = NULL;
3048 u32 *wqs_handles = NULL;
3049 struct ib_wq *wq = NULL;
3050 int i, j, num_read_wqs;
3051 u32 num_wq_handles;
3052 struct uverbs_req_iter iter;
3053 struct ib_device *ib_dev;
3054
3055 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3056 if (err)
3057 return err;
3058
3059 if (cmd.comp_mask)
3060 return -EOPNOTSUPP;
3061
3062 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3063 return -EINVAL;
3064
3065 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3066 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3067 GFP_KERNEL);
3068 if (!wqs_handles)
3069 return -ENOMEM;
3070
3071 err = uverbs_request_next(&iter, wqs_handles,
3072 num_wq_handles * sizeof(__u32));
3073 if (err)
3074 goto err_free;
3075
3076 err = uverbs_request_finish(&iter);
3077 if (err)
3078 goto err_free;
3079
3080 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3081 if (!wqs) {
3082 err = -ENOMEM;
3083 goto err_free;
3084 }
3085
3086 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3087 num_read_wqs++) {
3088 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ,
3089 wqs_handles[num_read_wqs], attrs);
3090 if (!wq) {
3091 err = -EINVAL;
3092 goto put_wqs;
3093 }
3094
3095 wqs[num_read_wqs] = wq;
3096 }
3097
3098 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev);
3099 if (IS_ERR(uobj)) {
3100 err = PTR_ERR(uobj);
3101 goto put_wqs;
3102 }
3103
3104 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3105 init_attr.ind_tbl = wqs;
3106
3107 rwq_ind_tbl = ib_dev->ops.create_rwq_ind_table(ib_dev, &init_attr,
3108 &attrs->driver_udata);
3109
3110 if (IS_ERR(rwq_ind_tbl)) {
3111 err = PTR_ERR(rwq_ind_tbl);
3112 goto err_uobj;
3113 }
3114
3115 rwq_ind_tbl->ind_tbl = wqs;
3116 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3117 rwq_ind_tbl->uobject = uobj;
3118 uobj->object = rwq_ind_tbl;
3119 rwq_ind_tbl->device = ib_dev;
3120 atomic_set(&rwq_ind_tbl->usecnt, 0);
3121
3122 for (i = 0; i < num_wq_handles; i++)
3123 atomic_inc(&wqs[i]->usecnt);
3124
3125 resp.ind_tbl_handle = uobj->id;
3126 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3127 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3128
3129 err = uverbs_response(attrs, &resp, sizeof(resp));
3130 if (err)
3131 goto err_copy;
3132
3133 kfree(wqs_handles);
3134
3135 for (j = 0; j < num_read_wqs; j++)
3136 uobj_put_obj_read(wqs[j]);
3137
3138 return uobj_alloc_commit(uobj, attrs);
3139
3140 err_copy:
3141 ib_destroy_rwq_ind_table(rwq_ind_tbl);
3142 err_uobj:
3143 uobj_alloc_abort(uobj, attrs);
3144 put_wqs:
3145 for (j = 0; j < num_read_wqs; j++)
3146 uobj_put_obj_read(wqs[j]);
3147 err_free:
3148 kfree(wqs_handles);
3149 kfree(wqs);
3150 return err;
3151 }
3152
3153 static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3154 {
3155 struct ib_uverbs_ex_destroy_rwq_ind_table cmd;
3156 int ret;
3157
3158 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3159 if (ret)
3160 return ret;
3161
3162 if (cmd.comp_mask)
3163 return -EOPNOTSUPP;
3164
3165 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL,
3166 cmd.ind_tbl_handle, attrs);
3167 }
3168
3169 static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs)
3170 {
3171 struct ib_uverbs_create_flow cmd;
3172 struct ib_uverbs_create_flow_resp resp;
3173 struct ib_uobject *uobj;
3174 struct ib_flow *flow_id;
3175 struct ib_uverbs_flow_attr *kern_flow_attr;
3176 struct ib_flow_attr *flow_attr;
3177 struct ib_qp *qp;
3178 struct ib_uflow_resources *uflow_res;
3179 struct ib_uverbs_flow_spec_hdr *kern_spec;
3180 struct uverbs_req_iter iter;
3181 int err;
3182 void *ib_spec;
3183 int i;
3184 struct ib_device *ib_dev;
3185
3186 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3187 if (err)
3188 return err;
3189
3190 if (cmd.comp_mask)
3191 return -EINVAL;
3192
3193 if (!capable(CAP_NET_RAW))
3194 return -EPERM;
3195
3196 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3197 return -EINVAL;
3198
3199 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3200 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3201 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3202 return -EINVAL;
3203
3204 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3205 return -EINVAL;
3206
3207 if (cmd.flow_attr.size >
3208 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3209 return -EINVAL;
3210
3211 if (cmd.flow_attr.reserved[0] ||
3212 cmd.flow_attr.reserved[1])
3213 return -EINVAL;
3214
3215 if (cmd.flow_attr.num_of_specs) {
3216 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3217 GFP_KERNEL);
3218 if (!kern_flow_attr)
3219 return -ENOMEM;
3220
3221 *kern_flow_attr = cmd.flow_attr;
3222 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs,
3223 cmd.flow_attr.size);
3224 if (err)
3225 goto err_free_attr;
3226 } else {
3227 kern_flow_attr = &cmd.flow_attr;
3228 }
3229
3230 err = uverbs_request_finish(&iter);
3231 if (err)
3232 goto err_free_attr;
3233
3234 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev);
3235 if (IS_ERR(uobj)) {
3236 err = PTR_ERR(uobj);
3237 goto err_free_attr;
3238 }
3239
3240 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
3241 if (!qp) {
3242 err = -EINVAL;
3243 goto err_uobj;
3244 }
3245
3246 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) {
3247 err = -EINVAL;
3248 goto err_put;
3249 }
3250
3251 flow_attr = kzalloc(struct_size(flow_attr, flows,
3252 cmd.flow_attr.num_of_specs), GFP_KERNEL);
3253 if (!flow_attr) {
3254 err = -ENOMEM;
3255 goto err_put;
3256 }
3257 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs);
3258 if (!uflow_res) {
3259 err = -ENOMEM;
3260 goto err_free_flow_attr;
3261 }
3262
3263 flow_attr->type = kern_flow_attr->type;
3264 flow_attr->priority = kern_flow_attr->priority;
3265 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3266 flow_attr->port = kern_flow_attr->port;
3267 flow_attr->flags = kern_flow_attr->flags;
3268 flow_attr->size = sizeof(*flow_attr);
3269
3270 kern_spec = kern_flow_attr->flow_specs;
3271 ib_spec = flow_attr + 1;
3272 for (i = 0; i < flow_attr->num_of_specs &&
3273 cmd.flow_attr.size >= sizeof(*kern_spec) &&
3274 cmd.flow_attr.size >= kern_spec->size;
3275 i++) {
3276 err = kern_spec_to_ib_spec(
3277 attrs, (struct ib_uverbs_flow_spec *)kern_spec,
3278 ib_spec, uflow_res);
3279 if (err)
3280 goto err_free;
3281
3282 flow_attr->size +=
3283 ((union ib_flow_spec *) ib_spec)->size;
3284 cmd.flow_attr.size -= kern_spec->size;
3285 kern_spec = ((void *)kern_spec) + kern_spec->size;
3286 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3287 }
3288 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3289 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
3290 i, cmd.flow_attr.size);
3291 err = -EINVAL;
3292 goto err_free;
3293 }
3294
3295 flow_id = qp->device->ops.create_flow(
3296 qp, flow_attr, IB_FLOW_DOMAIN_USER, &attrs->driver_udata);
3297
3298 if (IS_ERR(flow_id)) {
3299 err = PTR_ERR(flow_id);
3300 goto err_free;
3301 }
3302
3303 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res);
3304
3305 memset(&resp, 0, sizeof(resp));
3306 resp.flow_handle = uobj->id;
3307
3308 err = uverbs_response(attrs, &resp, sizeof(resp));
3309 if (err)
3310 goto err_copy;
3311
3312 uobj_put_obj_read(qp);
3313 kfree(flow_attr);
3314 if (cmd.flow_attr.num_of_specs)
3315 kfree(kern_flow_attr);
3316 return uobj_alloc_commit(uobj, attrs);
3317 err_copy:
3318 if (!qp->device->ops.destroy_flow(flow_id))
3319 atomic_dec(&qp->usecnt);
3320 err_free:
3321 ib_uverbs_flow_resources_free(uflow_res);
3322 err_free_flow_attr:
3323 kfree(flow_attr);
3324 err_put:
3325 uobj_put_obj_read(qp);
3326 err_uobj:
3327 uobj_alloc_abort(uobj, attrs);
3328 err_free_attr:
3329 if (cmd.flow_attr.num_of_specs)
3330 kfree(kern_flow_attr);
3331 return err;
3332 }
3333
3334 static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs)
3335 {
3336 struct ib_uverbs_destroy_flow cmd;
3337 int ret;
3338
3339 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3340 if (ret)
3341 return ret;
3342
3343 if (cmd.comp_mask)
3344 return -EINVAL;
3345
3346 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs);
3347 }
3348
3349 static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs,
3350 struct ib_uverbs_create_xsrq *cmd,
3351 struct ib_udata *udata)
3352 {
3353 struct ib_uverbs_create_srq_resp resp;
3354 struct ib_usrq_object *obj;
3355 struct ib_pd *pd;
3356 struct ib_srq *srq;
3357 struct ib_uobject *uninitialized_var(xrcd_uobj);
3358 struct ib_srq_init_attr attr;
3359 int ret;
3360 struct ib_device *ib_dev;
3361
3362 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs,
3363 &ib_dev);
3364 if (IS_ERR(obj))
3365 return PTR_ERR(obj);
3366
3367 if (cmd->srq_type == IB_SRQT_TM)
3368 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
3369
3370 if (cmd->srq_type == IB_SRQT_XRC) {
3371 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle,
3372 attrs);
3373 if (IS_ERR(xrcd_uobj)) {
3374 ret = -EINVAL;
3375 goto err;
3376 }
3377
3378 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3379 if (!attr.ext.xrc.xrcd) {
3380 ret = -EINVAL;
3381 goto err_put_xrcd;
3382 }
3383
3384 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3385 atomic_inc(&obj->uxrcd->refcnt);
3386 }
3387
3388 if (ib_srq_has_cq(cmd->srq_type)) {
3389 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
3390 cmd->cq_handle, attrs);
3391 if (!attr.ext.cq) {
3392 ret = -EINVAL;
3393 goto err_put_xrcd;
3394 }
3395 }
3396
3397 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs);
3398 if (!pd) {
3399 ret = -EINVAL;
3400 goto err_put_cq;
3401 }
3402
3403 attr.event_handler = ib_uverbs_srq_event_handler;
3404 attr.srq_context = attrs->ufile;
3405 attr.srq_type = cmd->srq_type;
3406 attr.attr.max_wr = cmd->max_wr;
3407 attr.attr.max_sge = cmd->max_sge;
3408 attr.attr.srq_limit = cmd->srq_limit;
3409
3410 obj->uevent.events_reported = 0;
3411 INIT_LIST_HEAD(&obj->uevent.event_list);
3412
3413 srq = pd->device->ops.create_srq(pd, &attr, udata);
3414 if (IS_ERR(srq)) {
3415 ret = PTR_ERR(srq);
3416 goto err_put;
3417 }
3418
3419 srq->device = pd->device;
3420 srq->pd = pd;
3421 srq->srq_type = cmd->srq_type;
3422 srq->uobject = &obj->uevent.uobject;
3423 srq->event_handler = attr.event_handler;
3424 srq->srq_context = attr.srq_context;
3425
3426 if (ib_srq_has_cq(cmd->srq_type)) {
3427 srq->ext.cq = attr.ext.cq;
3428 atomic_inc(&attr.ext.cq->usecnt);
3429 }
3430
3431 if (cmd->srq_type == IB_SRQT_XRC) {
3432 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
3433 atomic_inc(&attr.ext.xrc.xrcd->usecnt);
3434 }
3435
3436 atomic_inc(&pd->usecnt);
3437 atomic_set(&srq->usecnt, 0);
3438
3439 obj->uevent.uobject.object = srq;
3440 obj->uevent.uobject.user_handle = cmd->user_handle;
3441
3442 memset(&resp, 0, sizeof resp);
3443 resp.srq_handle = obj->uevent.uobject.id;
3444 resp.max_wr = attr.attr.max_wr;
3445 resp.max_sge = attr.attr.max_sge;
3446 if (cmd->srq_type == IB_SRQT_XRC)
3447 resp.srqn = srq->ext.xrc.srq_num;
3448
3449 ret = uverbs_response(attrs, &resp, sizeof(resp));
3450 if (ret)
3451 goto err_copy;
3452
3453 if (cmd->srq_type == IB_SRQT_XRC)
3454 uobj_put_read(xrcd_uobj);
3455
3456 if (ib_srq_has_cq(cmd->srq_type))
3457 uobj_put_obj_read(attr.ext.cq);
3458
3459 uobj_put_obj_read(pd);
3460 return uobj_alloc_commit(&obj->uevent.uobject, attrs);
3461
3462 err_copy:
3463 ib_destroy_srq_user(srq, &attrs->driver_udata);
3464
3465 err_put:
3466 uobj_put_obj_read(pd);
3467
3468 err_put_cq:
3469 if (ib_srq_has_cq(cmd->srq_type))
3470 uobj_put_obj_read(attr.ext.cq);
3471
3472 err_put_xrcd:
3473 if (cmd->srq_type == IB_SRQT_XRC) {
3474 atomic_dec(&obj->uxrcd->refcnt);
3475 uobj_put_read(xrcd_uobj);
3476 }
3477
3478 err:
3479 uobj_alloc_abort(&obj->uevent.uobject, attrs);
3480 return ret;
3481 }
3482
3483 static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs)
3484 {
3485 struct ib_uverbs_create_srq cmd;
3486 struct ib_uverbs_create_xsrq xcmd;
3487 int ret;
3488
3489 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3490 if (ret)
3491 return ret;
3492
3493 memset(&xcmd, 0, sizeof(xcmd));
3494 xcmd.response = cmd.response;
3495 xcmd.user_handle = cmd.user_handle;
3496 xcmd.srq_type = IB_SRQT_BASIC;
3497 xcmd.pd_handle = cmd.pd_handle;
3498 xcmd.max_wr = cmd.max_wr;
3499 xcmd.max_sge = cmd.max_sge;
3500 xcmd.srq_limit = cmd.srq_limit;
3501
3502 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata);
3503 }
3504
3505 static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs)
3506 {
3507 struct ib_uverbs_create_xsrq cmd;
3508 int ret;
3509
3510 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3511 if (ret)
3512 return ret;
3513
3514 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata);
3515 }
3516
3517 static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs)
3518 {
3519 struct ib_uverbs_modify_srq cmd;
3520 struct ib_srq *srq;
3521 struct ib_srq_attr attr;
3522 int ret;
3523
3524 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3525 if (ret)
3526 return ret;
3527
3528 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3529 if (!srq)
3530 return -EINVAL;
3531
3532 attr.max_wr = cmd.max_wr;
3533 attr.srq_limit = cmd.srq_limit;
3534
3535 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask,
3536 &attrs->driver_udata);
3537
3538 uobj_put_obj_read(srq);
3539
3540 return ret;
3541 }
3542
3543 static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs)
3544 {
3545 struct ib_uverbs_query_srq cmd;
3546 struct ib_uverbs_query_srq_resp resp;
3547 struct ib_srq_attr attr;
3548 struct ib_srq *srq;
3549 int ret;
3550
3551 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3552 if (ret)
3553 return ret;
3554
3555 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3556 if (!srq)
3557 return -EINVAL;
3558
3559 ret = ib_query_srq(srq, &attr);
3560
3561 uobj_put_obj_read(srq);
3562
3563 if (ret)
3564 return ret;
3565
3566 memset(&resp, 0, sizeof resp);
3567
3568 resp.max_wr = attr.max_wr;
3569 resp.max_sge = attr.max_sge;
3570 resp.srq_limit = attr.srq_limit;
3571
3572 return uverbs_response(attrs, &resp, sizeof(resp));
3573 }
3574
3575 static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs)
3576 {
3577 struct ib_uverbs_destroy_srq cmd;
3578 struct ib_uverbs_destroy_srq_resp resp;
3579 struct ib_uobject *uobj;
3580 struct ib_uevent_object *obj;
3581 int ret;
3582
3583 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3584 if (ret)
3585 return ret;
3586
3587 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3588 if (IS_ERR(uobj))
3589 return PTR_ERR(uobj);
3590
3591 obj = container_of(uobj, struct ib_uevent_object, uobject);
3592 memset(&resp, 0, sizeof(resp));
3593 resp.events_reported = obj->events_reported;
3594
3595 uobj_put_destroy(uobj);
3596
3597 return uverbs_response(attrs, &resp, sizeof(resp));
3598 }
3599
3600 static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs)
3601 {
3602 struct ib_uverbs_ex_query_device_resp resp = {};
3603 struct ib_uverbs_ex_query_device cmd;
3604 struct ib_device_attr attr = {0};
3605 struct ib_ucontext *ucontext;
3606 struct ib_device *ib_dev;
3607 int err;
3608
3609 ucontext = ib_uverbs_get_ucontext(attrs);
3610 if (IS_ERR(ucontext))
3611 return PTR_ERR(ucontext);
3612 ib_dev = ucontext->device;
3613
3614 err = uverbs_request(attrs, &cmd, sizeof(cmd));
3615 if (err)
3616 return err;
3617
3618 if (cmd.comp_mask)
3619 return -EINVAL;
3620
3621 if (cmd.reserved)
3622 return -EINVAL;
3623
3624 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata);
3625 if (err)
3626 return err;
3627
3628 copy_query_dev_fields(ucontext, &resp.base, &attr);
3629
3630 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3631 resp.odp_caps.per_transport_caps.rc_odp_caps =
3632 attr.odp_caps.per_transport_caps.rc_odp_caps;
3633 resp.odp_caps.per_transport_caps.uc_odp_caps =
3634 attr.odp_caps.per_transport_caps.uc_odp_caps;
3635 resp.odp_caps.per_transport_caps.ud_odp_caps =
3636 attr.odp_caps.per_transport_caps.ud_odp_caps;
3637 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps;
3638
3639 resp.timestamp_mask = attr.timestamp_mask;
3640 resp.hca_core_clock = attr.hca_core_clock;
3641 resp.device_cap_flags_ex = attr.device_cap_flags;
3642 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3643 resp.rss_caps.max_rwq_indirection_tables =
3644 attr.rss_caps.max_rwq_indirection_tables;
3645 resp.rss_caps.max_rwq_indirection_table_size =
3646 attr.rss_caps.max_rwq_indirection_table_size;
3647 resp.max_wq_type_rq = attr.max_wq_type_rq;
3648 resp.raw_packet_caps = attr.raw_packet_caps;
3649 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size;
3650 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags;
3651 resp.tm_caps.max_ops = attr.tm_caps.max_ops;
3652 resp.tm_caps.max_sge = attr.tm_caps.max_sge;
3653 resp.tm_caps.flags = attr.tm_caps.flags;
3654 resp.cq_moderation_caps.max_cq_moderation_count =
3655 attr.cq_caps.max_cq_moderation_count;
3656 resp.cq_moderation_caps.max_cq_moderation_period =
3657 attr.cq_caps.max_cq_moderation_period;
3658 resp.max_dm_size = attr.max_dm_size;
3659 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3660
3661 return uverbs_response(attrs, &resp, sizeof(resp));
3662 }
3663
3664 static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs)
3665 {
3666 struct ib_uverbs_ex_modify_cq cmd;
3667 struct ib_cq *cq;
3668 int ret;
3669
3670 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3671 if (ret)
3672 return ret;
3673
3674 if (!cmd.attr_mask || cmd.reserved)
3675 return -EINVAL;
3676
3677 if (cmd.attr_mask > IB_CQ_MODERATE)
3678 return -EOPNOTSUPP;
3679
3680 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
3681 if (!cq)
3682 return -EINVAL;
3683
3684 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period);
3685
3686 uobj_put_obj_read(cq);
3687
3688 return ret;
3689 }
3690
3691 /*
3692 * Describe the input structs for write(). Some write methods have an input
3693 * only struct, most have an input and output. If the struct has an output then
3694 * the 'response' u64 must be the first field in the request structure.
3695 *
3696 * If udata is present then both the request and response structs have a
3697 * trailing driver_data flex array. In this case the size of the base struct
3698 * cannot be changed.
3699 */
3700 #define offsetof_after(_struct, _member) \
3701 (offsetof(_struct, _member) + sizeof(((_struct *)NULL)->_member))
3702
3703 #define UAPI_DEF_WRITE_IO(req, resp) \
3704 .write.has_resp = 1 + \
3705 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \
3706 BUILD_BUG_ON_ZERO(sizeof(((req *)0)->response) != \
3707 sizeof(u64)), \
3708 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp)
3709
3710 #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req)
3711
3712 #define UAPI_DEF_WRITE_UDATA_IO(req, resp) \
3713 UAPI_DEF_WRITE_IO(req, resp), \
3714 .write.has_udata = \
3715 1 + \
3716 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3717 sizeof(req)) + \
3718 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \
3719 sizeof(resp))
3720
3721 #define UAPI_DEF_WRITE_UDATA_I(req) \
3722 UAPI_DEF_WRITE_I(req), \
3723 .write.has_udata = \
3724 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3725 sizeof(req))
3726
3727 /*
3728 * The _EX versions are for use with WRITE_EX and allow the last struct member
3729 * to be specified. Buffers that do not include that member will be rejected.
3730 */
3731 #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \
3732 .write.has_resp = 1, \
3733 .write.req_size = offsetof_after(req, req_last_member), \
3734 .write.resp_size = offsetof_after(resp, resp_last_member)
3735
3736 #define UAPI_DEF_WRITE_I_EX(req, req_last_member) \
3737 .write.req_size = offsetof_after(req, req_last_member)
3738
3739 const struct uapi_definition uverbs_def_write_intf[] = {
3740 DECLARE_UVERBS_OBJECT(
3741 UVERBS_OBJECT_AH,
3742 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH,
3743 ib_uverbs_create_ah,
3744 UAPI_DEF_WRITE_UDATA_IO(
3745 struct ib_uverbs_create_ah,
3746 struct ib_uverbs_create_ah_resp),
3747 UAPI_DEF_METHOD_NEEDS_FN(create_ah)),
3748 DECLARE_UVERBS_WRITE(
3749 IB_USER_VERBS_CMD_DESTROY_AH,
3750 ib_uverbs_destroy_ah,
3751 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah),
3752 UAPI_DEF_METHOD_NEEDS_FN(destroy_ah))),
3753
3754 DECLARE_UVERBS_OBJECT(
3755 UVERBS_OBJECT_COMP_CHANNEL,
3756 DECLARE_UVERBS_WRITE(
3757 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
3758 ib_uverbs_create_comp_channel,
3759 UAPI_DEF_WRITE_IO(
3760 struct ib_uverbs_create_comp_channel,
3761 struct ib_uverbs_create_comp_channel_resp))),
3762
3763 DECLARE_UVERBS_OBJECT(
3764 UVERBS_OBJECT_CQ,
3765 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ,
3766 ib_uverbs_create_cq,
3767 UAPI_DEF_WRITE_UDATA_IO(
3768 struct ib_uverbs_create_cq,
3769 struct ib_uverbs_create_cq_resp),
3770 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3771 DECLARE_UVERBS_WRITE(
3772 IB_USER_VERBS_CMD_DESTROY_CQ,
3773 ib_uverbs_destroy_cq,
3774 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq,
3775 struct ib_uverbs_destroy_cq_resp),
3776 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)),
3777 DECLARE_UVERBS_WRITE(
3778 IB_USER_VERBS_CMD_POLL_CQ,
3779 ib_uverbs_poll_cq,
3780 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq,
3781 struct ib_uverbs_poll_cq_resp),
3782 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)),
3783 DECLARE_UVERBS_WRITE(
3784 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
3785 ib_uverbs_req_notify_cq,
3786 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq),
3787 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)),
3788 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ,
3789 ib_uverbs_resize_cq,
3790 UAPI_DEF_WRITE_UDATA_IO(
3791 struct ib_uverbs_resize_cq,
3792 struct ib_uverbs_resize_cq_resp),
3793 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)),
3794 DECLARE_UVERBS_WRITE_EX(
3795 IB_USER_VERBS_EX_CMD_CREATE_CQ,
3796 ib_uverbs_ex_create_cq,
3797 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq,
3798 reserved,
3799 struct ib_uverbs_ex_create_cq_resp,
3800 response_length),
3801 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3802 DECLARE_UVERBS_WRITE_EX(
3803 IB_USER_VERBS_EX_CMD_MODIFY_CQ,
3804 ib_uverbs_ex_modify_cq,
3805 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq),
3806 UAPI_DEF_METHOD_NEEDS_FN(create_cq))),
3807
3808 DECLARE_UVERBS_OBJECT(
3809 UVERBS_OBJECT_DEVICE,
3810 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT,
3811 ib_uverbs_get_context,
3812 UAPI_DEF_WRITE_UDATA_IO(
3813 struct ib_uverbs_get_context,
3814 struct ib_uverbs_get_context_resp)),
3815 DECLARE_UVERBS_WRITE(
3816 IB_USER_VERBS_CMD_QUERY_DEVICE,
3817 ib_uverbs_query_device,
3818 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device,
3819 struct ib_uverbs_query_device_resp)),
3820 DECLARE_UVERBS_WRITE(
3821 IB_USER_VERBS_CMD_QUERY_PORT,
3822 ib_uverbs_query_port,
3823 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port,
3824 struct ib_uverbs_query_port_resp),
3825 UAPI_DEF_METHOD_NEEDS_FN(query_port)),
3826 DECLARE_UVERBS_WRITE_EX(
3827 IB_USER_VERBS_EX_CMD_QUERY_DEVICE,
3828 ib_uverbs_ex_query_device,
3829 UAPI_DEF_WRITE_IO_EX(
3830 struct ib_uverbs_ex_query_device,
3831 reserved,
3832 struct ib_uverbs_ex_query_device_resp,
3833 response_length),
3834 UAPI_DEF_METHOD_NEEDS_FN(query_device)),
3835 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext),
3836 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)),
3837
3838 DECLARE_UVERBS_OBJECT(
3839 UVERBS_OBJECT_FLOW,
3840 DECLARE_UVERBS_WRITE_EX(
3841 IB_USER_VERBS_EX_CMD_CREATE_FLOW,
3842 ib_uverbs_ex_create_flow,
3843 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow,
3844 flow_attr,
3845 struct ib_uverbs_create_flow_resp,
3846 flow_handle),
3847 UAPI_DEF_METHOD_NEEDS_FN(create_flow)),
3848 DECLARE_UVERBS_WRITE_EX(
3849 IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
3850 ib_uverbs_ex_destroy_flow,
3851 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow),
3852 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))),
3853
3854 DECLARE_UVERBS_OBJECT(
3855 UVERBS_OBJECT_MR,
3856 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR,
3857 ib_uverbs_dereg_mr,
3858 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr),
3859 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)),
3860 DECLARE_UVERBS_WRITE(
3861 IB_USER_VERBS_CMD_REG_MR,
3862 ib_uverbs_reg_mr,
3863 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr,
3864 struct ib_uverbs_reg_mr_resp),
3865 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)),
3866 DECLARE_UVERBS_WRITE(
3867 IB_USER_VERBS_CMD_REREG_MR,
3868 ib_uverbs_rereg_mr,
3869 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr,
3870 struct ib_uverbs_rereg_mr_resp),
3871 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))),
3872
3873 DECLARE_UVERBS_OBJECT(
3874 UVERBS_OBJECT_MW,
3875 DECLARE_UVERBS_WRITE(
3876 IB_USER_VERBS_CMD_ALLOC_MW,
3877 ib_uverbs_alloc_mw,
3878 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw,
3879 struct ib_uverbs_alloc_mw_resp),
3880 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)),
3881 DECLARE_UVERBS_WRITE(
3882 IB_USER_VERBS_CMD_DEALLOC_MW,
3883 ib_uverbs_dealloc_mw,
3884 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw),
3885 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))),
3886
3887 DECLARE_UVERBS_OBJECT(
3888 UVERBS_OBJECT_PD,
3889 DECLARE_UVERBS_WRITE(
3890 IB_USER_VERBS_CMD_ALLOC_PD,
3891 ib_uverbs_alloc_pd,
3892 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd,
3893 struct ib_uverbs_alloc_pd_resp),
3894 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)),
3895 DECLARE_UVERBS_WRITE(
3896 IB_USER_VERBS_CMD_DEALLOC_PD,
3897 ib_uverbs_dealloc_pd,
3898 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd),
3899 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))),
3900
3901 DECLARE_UVERBS_OBJECT(
3902 UVERBS_OBJECT_QP,
3903 DECLARE_UVERBS_WRITE(
3904 IB_USER_VERBS_CMD_ATTACH_MCAST,
3905 ib_uverbs_attach_mcast,
3906 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast),
3907 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast),
3908 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3909 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP,
3910 ib_uverbs_create_qp,
3911 UAPI_DEF_WRITE_UDATA_IO(
3912 struct ib_uverbs_create_qp,
3913 struct ib_uverbs_create_qp_resp),
3914 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3915 DECLARE_UVERBS_WRITE(
3916 IB_USER_VERBS_CMD_DESTROY_QP,
3917 ib_uverbs_destroy_qp,
3918 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp,
3919 struct ib_uverbs_destroy_qp_resp),
3920 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)),
3921 DECLARE_UVERBS_WRITE(
3922 IB_USER_VERBS_CMD_DETACH_MCAST,
3923 ib_uverbs_detach_mcast,
3924 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast),
3925 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3926 DECLARE_UVERBS_WRITE(
3927 IB_USER_VERBS_CMD_MODIFY_QP,
3928 ib_uverbs_modify_qp,
3929 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp),
3930 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)),
3931 DECLARE_UVERBS_WRITE(
3932 IB_USER_VERBS_CMD_POST_RECV,
3933 ib_uverbs_post_recv,
3934 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv,
3935 struct ib_uverbs_post_recv_resp),
3936 UAPI_DEF_METHOD_NEEDS_FN(post_recv)),
3937 DECLARE_UVERBS_WRITE(
3938 IB_USER_VERBS_CMD_POST_SEND,
3939 ib_uverbs_post_send,
3940 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send,
3941 struct ib_uverbs_post_send_resp),
3942 UAPI_DEF_METHOD_NEEDS_FN(post_send)),
3943 DECLARE_UVERBS_WRITE(
3944 IB_USER_VERBS_CMD_QUERY_QP,
3945 ib_uverbs_query_qp,
3946 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp,
3947 struct ib_uverbs_query_qp_resp),
3948 UAPI_DEF_METHOD_NEEDS_FN(query_qp)),
3949 DECLARE_UVERBS_WRITE_EX(
3950 IB_USER_VERBS_EX_CMD_CREATE_QP,
3951 ib_uverbs_ex_create_qp,
3952 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp,
3953 comp_mask,
3954 struct ib_uverbs_ex_create_qp_resp,
3955 response_length),
3956 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3957 DECLARE_UVERBS_WRITE_EX(
3958 IB_USER_VERBS_EX_CMD_MODIFY_QP,
3959 ib_uverbs_ex_modify_qp,
3960 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp,
3961 base,
3962 struct ib_uverbs_ex_modify_qp_resp,
3963 response_length),
3964 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))),
3965
3966 DECLARE_UVERBS_OBJECT(
3967 UVERBS_OBJECT_RWQ_IND_TBL,
3968 DECLARE_UVERBS_WRITE_EX(
3969 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
3970 ib_uverbs_ex_create_rwq_ind_table,
3971 UAPI_DEF_WRITE_IO_EX(
3972 struct ib_uverbs_ex_create_rwq_ind_table,
3973 log_ind_tbl_size,
3974 struct ib_uverbs_ex_create_rwq_ind_table_resp,
3975 ind_tbl_num),
3976 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)),
3977 DECLARE_UVERBS_WRITE_EX(
3978 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL,
3979 ib_uverbs_ex_destroy_rwq_ind_table,
3980 UAPI_DEF_WRITE_I(
3981 struct ib_uverbs_ex_destroy_rwq_ind_table),
3982 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))),
3983
3984 DECLARE_UVERBS_OBJECT(
3985 UVERBS_OBJECT_WQ,
3986 DECLARE_UVERBS_WRITE_EX(
3987 IB_USER_VERBS_EX_CMD_CREATE_WQ,
3988 ib_uverbs_ex_create_wq,
3989 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq,
3990 max_sge,
3991 struct ib_uverbs_ex_create_wq_resp,
3992 wqn),
3993 UAPI_DEF_METHOD_NEEDS_FN(create_wq)),
3994 DECLARE_UVERBS_WRITE_EX(
3995 IB_USER_VERBS_EX_CMD_DESTROY_WQ,
3996 ib_uverbs_ex_destroy_wq,
3997 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq,
3998 wq_handle,
3999 struct ib_uverbs_ex_destroy_wq_resp,
4000 reserved),
4001 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)),
4002 DECLARE_UVERBS_WRITE_EX(
4003 IB_USER_VERBS_EX_CMD_MODIFY_WQ,
4004 ib_uverbs_ex_modify_wq,
4005 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq,
4006 curr_wq_state),
4007 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))),
4008
4009 DECLARE_UVERBS_OBJECT(
4010 UVERBS_OBJECT_SRQ,
4011 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ,
4012 ib_uverbs_create_srq,
4013 UAPI_DEF_WRITE_UDATA_IO(
4014 struct ib_uverbs_create_srq,
4015 struct ib_uverbs_create_srq_resp),
4016 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4017 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ,
4018 ib_uverbs_create_xsrq,
4019 UAPI_DEF_WRITE_UDATA_IO(
4020 struct ib_uverbs_create_xsrq,
4021 struct ib_uverbs_create_srq_resp),
4022 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4023 DECLARE_UVERBS_WRITE(
4024 IB_USER_VERBS_CMD_DESTROY_SRQ,
4025 ib_uverbs_destroy_srq,
4026 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq,
4027 struct ib_uverbs_destroy_srq_resp),
4028 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)),
4029 DECLARE_UVERBS_WRITE(
4030 IB_USER_VERBS_CMD_MODIFY_SRQ,
4031 ib_uverbs_modify_srq,
4032 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq),
4033 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)),
4034 DECLARE_UVERBS_WRITE(
4035 IB_USER_VERBS_CMD_POST_SRQ_RECV,
4036 ib_uverbs_post_srq_recv,
4037 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv,
4038 struct ib_uverbs_post_srq_recv_resp),
4039 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)),
4040 DECLARE_UVERBS_WRITE(
4041 IB_USER_VERBS_CMD_QUERY_SRQ,
4042 ib_uverbs_query_srq,
4043 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq,
4044 struct ib_uverbs_query_srq_resp),
4045 UAPI_DEF_METHOD_NEEDS_FN(query_srq))),
4046
4047 DECLARE_UVERBS_OBJECT(
4048 UVERBS_OBJECT_XRCD,
4049 DECLARE_UVERBS_WRITE(
4050 IB_USER_VERBS_CMD_CLOSE_XRCD,
4051 ib_uverbs_close_xrcd,
4052 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd),
4053 UAPI_DEF_METHOD_NEEDS_FN(dealloc_xrcd)),
4054 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP,
4055 ib_uverbs_open_qp,
4056 UAPI_DEF_WRITE_UDATA_IO(
4057 struct ib_uverbs_open_qp,
4058 struct ib_uverbs_create_qp_resp)),
4059 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD,
4060 ib_uverbs_open_xrcd,
4061 UAPI_DEF_WRITE_UDATA_IO(
4062 struct ib_uverbs_open_xrcd,
4063 struct ib_uverbs_open_xrcd_resp),
4064 UAPI_DEF_METHOD_NEEDS_FN(alloc_xrcd))),
4065
4066 {},
4067 };
Ubuntu Hirsute Linux kernel mirror