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1/*
2 * Copyright (c) 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
4 * Copyright (c) 2005 PathScale, Inc. All rights reserved.
5 * Copyright (c) 2006 Mellanox Technologies. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36#include <linux/file.h>
37#include <linux/fs.h>
38#include <linux/slab.h>
39#include <linux/sched.h>
40
41#include <linux/uaccess.h>
42
43#include <rdma/uverbs_types.h>
44#include <rdma/uverbs_std_types.h>
45#include "rdma_core.h"
46
47#include "uverbs.h"
48#include "core_priv.h"
49
50/*
51 * Copy a response to userspace. If the provided 'resp' is larger than the
52 * user buffer it is silently truncated. If the user provided a larger buffer
53 * then the trailing portion is zero filled.
54 *
55 * These semantics are intended to support future extension of the output
56 * structures.
57 */
58static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp,
59 size_t resp_len)
60{
61 int ret;
62
63 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
64 return uverbs_copy_to_struct_or_zero(
65 attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len);
66
67 if (copy_to_user(attrs->ucore.outbuf, resp,
68 min(attrs->ucore.outlen, resp_len)))
69 return -EFAULT;
70
71 if (resp_len < attrs->ucore.outlen) {
72 /*
73 * Zero fill any extra memory that user
74 * space might have provided.
75 */
76 ret = clear_user(attrs->ucore.outbuf + resp_len,
77 attrs->ucore.outlen - resp_len);
78 if (ret)
79 return -EFAULT;
80 }
81
82 return 0;
83}
84
85/*
86 * Copy a request from userspace. If the provided 'req' is larger than the
87 * user buffer then the user buffer is zero extended into the 'req'. If 'req'
88 * is smaller than the user buffer then the uncopied bytes in the user buffer
89 * must be zero.
90 */
91static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req,
92 size_t req_len)
93{
94 if (copy_from_user(req, attrs->ucore.inbuf,
95 min(attrs->ucore.inlen, req_len)))
96 return -EFAULT;
97
98 if (attrs->ucore.inlen < req_len) {
99 memset(req + attrs->ucore.inlen, 0,
100 req_len - attrs->ucore.inlen);
101 } else if (attrs->ucore.inlen > req_len) {
102 if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len,
103 attrs->ucore.inlen - req_len))
104 return -EOPNOTSUPP;
105 }
106 return 0;
107}
108
109/*
110 * Generate the value for the 'response_length' protocol used by write_ex.
111 * This is the number of bytes the kernel actually wrote. Userspace can use
112 * this to detect what structure members in the response the kernel
113 * understood.
114 */
115static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs,
116 size_t resp_len)
117{
118 return min_t(size_t, attrs->ucore.outlen, resp_len);
119}
120
121/*
122 * The iterator version of the request interface is for handlers that need to
123 * step over a flex array at the end of a command header.
124 */
125struct uverbs_req_iter {
126 const void __user *cur;
127 const void __user *end;
128};
129
130static int uverbs_request_start(struct uverbs_attr_bundle *attrs,
131 struct uverbs_req_iter *iter,
132 void *req,
133 size_t req_len)
134{
135 if (attrs->ucore.inlen < req_len)
136 return -ENOSPC;
137
138 if (copy_from_user(req, attrs->ucore.inbuf, req_len))
139 return -EFAULT;
140
141 iter->cur = attrs->ucore.inbuf + req_len;
142 iter->end = attrs->ucore.inbuf + attrs->ucore.inlen;
143 return 0;
144}
145
146static int uverbs_request_next(struct uverbs_req_iter *iter, void *val,
147 size_t len)
148{
149 if (iter->cur + len > iter->end)
150 return -ENOSPC;
151
152 if (copy_from_user(val, iter->cur, len))
153 return -EFAULT;
154
155 iter->cur += len;
156 return 0;
157}
158
159static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter,
160 size_t len)
161{
162 const void __user *res = iter->cur;
163
164 if (iter->cur + len > iter->end)
165 return (void __force __user *)ERR_PTR(-ENOSPC);
166 iter->cur += len;
167 return res;
168}
169
170static int uverbs_request_finish(struct uverbs_req_iter *iter)
171{
172 if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur))
173 return -EOPNOTSUPP;
174 return 0;
175}
176
177/*
178 * When calling a destroy function during an error unwind we need to pass in
179 * the udata that is sanitized of all user arguments. Ie from the driver
180 * perspective it looks like no udata was passed.
181 */
182struct ib_udata *uverbs_get_cleared_udata(struct uverbs_attr_bundle *attrs)
183{
184 attrs->driver_udata = (struct ib_udata){};
185 return &attrs->driver_udata;
186}
187
188static struct ib_uverbs_completion_event_file *
189_ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs)
190{
191 struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL,
192 fd, attrs);
193
194 if (IS_ERR(uobj))
195 return (void *)uobj;
196
197 uverbs_uobject_get(uobj);
198 uobj_put_read(uobj);
199
200 return container_of(uobj, struct ib_uverbs_completion_event_file,
201 uobj);
202}
203#define ib_uverbs_lookup_comp_file(_fd, _ufile) \
204 _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile)
205
206int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs)
207{
208 struct ib_uverbs_file *ufile = attrs->ufile;
209 struct ib_ucontext *ucontext;
210 struct ib_device *ib_dev;
211
212 ib_dev = srcu_dereference(ufile->device->ib_dev,
213 &ufile->device->disassociate_srcu);
214 if (!ib_dev)
215 return -EIO;
216
217 ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext);
218 if (!ucontext)
219 return -ENOMEM;
220
221 ucontext->device = ib_dev;
222 ucontext->ufile = ufile;
223 xa_init_flags(&ucontext->mmap_xa, XA_FLAGS_ALLOC);
224
225 rdma_restrack_new(&ucontext->res, RDMA_RESTRACK_CTX);
226 rdma_restrack_set_name(&ucontext->res, NULL);
227 attrs->context = ucontext;
228 return 0;
229}
230
231int ib_init_ucontext(struct uverbs_attr_bundle *attrs)
232{
233 struct ib_ucontext *ucontext = attrs->context;
234 struct ib_uverbs_file *file = attrs->ufile;
235 int ret;
236
237 if (!down_read_trylock(&file->hw_destroy_rwsem))
238 return -EIO;
239 mutex_lock(&file->ucontext_lock);
240 if (file->ucontext) {
241 ret = -EINVAL;
242 goto err;
243 }
244
245 ret = ib_rdmacg_try_charge(&ucontext->cg_obj, ucontext->device,
246 RDMACG_RESOURCE_HCA_HANDLE);
247 if (ret)
248 goto err;
249
250 ret = ucontext->device->ops.alloc_ucontext(ucontext,
251 &attrs->driver_udata);
252 if (ret)
253 goto err_uncharge;
254
255 rdma_restrack_add(&ucontext->res);
256
257 /*
258 * Make sure that ib_uverbs_get_ucontext() sees the pointer update
259 * only after all writes to setup the ucontext have completed
260 */
261 smp_store_release(&file->ucontext, ucontext);
262
263 mutex_unlock(&file->ucontext_lock);
264 up_read(&file->hw_destroy_rwsem);
265 return 0;
266
267err_uncharge:
268 ib_rdmacg_uncharge(&ucontext->cg_obj, ucontext->device,
269 RDMACG_RESOURCE_HCA_HANDLE);
270err:
271 mutex_unlock(&file->ucontext_lock);
272 up_read(&file->hw_destroy_rwsem);
273 return ret;
274}
275
276static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs)
277{
278 struct ib_uverbs_get_context_resp resp;
279 struct ib_uverbs_get_context cmd;
280 struct ib_device *ib_dev;
281 struct ib_uobject *uobj;
282 int ret;
283
284 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
285 if (ret)
286 return ret;
287
288 ret = ib_alloc_ucontext(attrs);
289 if (ret)
290 return ret;
291
292 uobj = uobj_alloc(UVERBS_OBJECT_ASYNC_EVENT, attrs, &ib_dev);
293 if (IS_ERR(uobj)) {
294 ret = PTR_ERR(uobj);
295 goto err_ucontext;
296 }
297
298 resp = (struct ib_uverbs_get_context_resp){
299 .num_comp_vectors = attrs->ufile->device->num_comp_vectors,
300 .async_fd = uobj->id,
301 };
302 ret = uverbs_response(attrs, &resp, sizeof(resp));
303 if (ret)
304 goto err_uobj;
305
306 ret = ib_init_ucontext(attrs);
307 if (ret)
308 goto err_uobj;
309
310 ib_uverbs_init_async_event_file(
311 container_of(uobj, struct ib_uverbs_async_event_file, uobj));
312 rdma_alloc_commit_uobject(uobj, attrs);
313 return 0;
314
315err_uobj:
316 rdma_alloc_abort_uobject(uobj, attrs, false);
317err_ucontext:
318 rdma_restrack_put(&attrs->context->res);
319 kfree(attrs->context);
320 attrs->context = NULL;
321 return ret;
322}
323
324static void copy_query_dev_fields(struct ib_ucontext *ucontext,
325 struct ib_uverbs_query_device_resp *resp,
326 struct ib_device_attr *attr)
327{
328 struct ib_device *ib_dev = ucontext->device;
329
330 resp->fw_ver = attr->fw_ver;
331 resp->node_guid = ib_dev->node_guid;
332 resp->sys_image_guid = attr->sys_image_guid;
333 resp->max_mr_size = attr->max_mr_size;
334 resp->page_size_cap = attr->page_size_cap;
335 resp->vendor_id = attr->vendor_id;
336 resp->vendor_part_id = attr->vendor_part_id;
337 resp->hw_ver = attr->hw_ver;
338 resp->max_qp = attr->max_qp;
339 resp->max_qp_wr = attr->max_qp_wr;
340 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags);
341 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge);
342 resp->max_sge_rd = attr->max_sge_rd;
343 resp->max_cq = attr->max_cq;
344 resp->max_cqe = attr->max_cqe;
345 resp->max_mr = attr->max_mr;
346 resp->max_pd = attr->max_pd;
347 resp->max_qp_rd_atom = attr->max_qp_rd_atom;
348 resp->max_ee_rd_atom = attr->max_ee_rd_atom;
349 resp->max_res_rd_atom = attr->max_res_rd_atom;
350 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom;
351 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom;
352 resp->atomic_cap = attr->atomic_cap;
353 resp->max_ee = attr->max_ee;
354 resp->max_rdd = attr->max_rdd;
355 resp->max_mw = attr->max_mw;
356 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp;
357 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp;
358 resp->max_mcast_grp = attr->max_mcast_grp;
359 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
360 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
361 resp->max_ah = attr->max_ah;
362 resp->max_srq = attr->max_srq;
363 resp->max_srq_wr = attr->max_srq_wr;
364 resp->max_srq_sge = attr->max_srq_sge;
365 resp->max_pkeys = attr->max_pkeys;
366 resp->local_ca_ack_delay = attr->local_ca_ack_delay;
367 resp->phys_port_cnt = min_t(u32, ib_dev->phys_port_cnt, U8_MAX);
368}
369
370static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs)
371{
372 struct ib_uverbs_query_device cmd;
373 struct ib_uverbs_query_device_resp resp;
374 struct ib_ucontext *ucontext;
375 int ret;
376
377 ucontext = ib_uverbs_get_ucontext(attrs);
378 if (IS_ERR(ucontext))
379 return PTR_ERR(ucontext);
380
381 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
382 if (ret)
383 return ret;
384
385 memset(&resp, 0, sizeof resp);
386 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs);
387
388 return uverbs_response(attrs, &resp, sizeof(resp));
389}
390
391static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs)
392{
393 struct ib_uverbs_query_port cmd;
394 struct ib_uverbs_query_port_resp resp;
395 struct ib_port_attr attr;
396 int ret;
397 struct ib_ucontext *ucontext;
398 struct ib_device *ib_dev;
399
400 ucontext = ib_uverbs_get_ucontext(attrs);
401 if (IS_ERR(ucontext))
402 return PTR_ERR(ucontext);
403 ib_dev = ucontext->device;
404
405 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
406 if (ret)
407 return ret;
408
409 ret = ib_query_port(ib_dev, cmd.port_num, &attr);
410 if (ret)
411 return ret;
412
413 memset(&resp, 0, sizeof resp);
414 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num);
415
416 return uverbs_response(attrs, &resp, sizeof(resp));
417}
418
419static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs)
420{
421 struct ib_uverbs_alloc_pd_resp resp = {};
422 struct ib_uverbs_alloc_pd cmd;
423 struct ib_uobject *uobj;
424 struct ib_pd *pd;
425 int ret;
426 struct ib_device *ib_dev;
427
428 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
429 if (ret)
430 return ret;
431
432 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev);
433 if (IS_ERR(uobj))
434 return PTR_ERR(uobj);
435
436 pd = rdma_zalloc_drv_obj(ib_dev, ib_pd);
437 if (!pd) {
438 ret = -ENOMEM;
439 goto err;
440 }
441
442 pd->device = ib_dev;
443 pd->uobject = uobj;
444 atomic_set(&pd->usecnt, 0);
445
446 rdma_restrack_new(&pd->res, RDMA_RESTRACK_PD);
447 rdma_restrack_set_name(&pd->res, NULL);
448
449 ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata);
450 if (ret)
451 goto err_alloc;
452 rdma_restrack_add(&pd->res);
453
454 uobj->object = pd;
455 uobj_finalize_uobj_create(uobj, attrs);
456
457 resp.pd_handle = uobj->id;
458 return uverbs_response(attrs, &resp, sizeof(resp));
459
460err_alloc:
461 rdma_restrack_put(&pd->res);
462 kfree(pd);
463err:
464 uobj_alloc_abort(uobj, attrs);
465 return ret;
466}
467
468static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs)
469{
470 struct ib_uverbs_dealloc_pd cmd;
471 int ret;
472
473 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
474 if (ret)
475 return ret;
476
477 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
478}
479
480struct xrcd_table_entry {
481 struct rb_node node;
482 struct ib_xrcd *xrcd;
483 struct inode *inode;
484};
485
486static int xrcd_table_insert(struct ib_uverbs_device *dev,
487 struct inode *inode,
488 struct ib_xrcd *xrcd)
489{
490 struct xrcd_table_entry *entry, *scan;
491 struct rb_node **p = &dev->xrcd_tree.rb_node;
492 struct rb_node *parent = NULL;
493
494 entry = kmalloc(sizeof *entry, GFP_KERNEL);
495 if (!entry)
496 return -ENOMEM;
497
498 entry->xrcd = xrcd;
499 entry->inode = inode;
500
501 while (*p) {
502 parent = *p;
503 scan = rb_entry(parent, struct xrcd_table_entry, node);
504
505 if (inode < scan->inode) {
506 p = &(*p)->rb_left;
507 } else if (inode > scan->inode) {
508 p = &(*p)->rb_right;
509 } else {
510 kfree(entry);
511 return -EEXIST;
512 }
513 }
514
515 rb_link_node(&entry->node, parent, p);
516 rb_insert_color(&entry->node, &dev->xrcd_tree);
517 igrab(inode);
518 return 0;
519}
520
521static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
522 struct inode *inode)
523{
524 struct xrcd_table_entry *entry;
525 struct rb_node *p = dev->xrcd_tree.rb_node;
526
527 while (p) {
528 entry = rb_entry(p, struct xrcd_table_entry, node);
529
530 if (inode < entry->inode)
531 p = p->rb_left;
532 else if (inode > entry->inode)
533 p = p->rb_right;
534 else
535 return entry;
536 }
537
538 return NULL;
539}
540
541static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
542{
543 struct xrcd_table_entry *entry;
544
545 entry = xrcd_table_search(dev, inode);
546 if (!entry)
547 return NULL;
548
549 return entry->xrcd;
550}
551
552static void xrcd_table_delete(struct ib_uverbs_device *dev,
553 struct inode *inode)
554{
555 struct xrcd_table_entry *entry;
556
557 entry = xrcd_table_search(dev, inode);
558 if (entry) {
559 iput(inode);
560 rb_erase(&entry->node, &dev->xrcd_tree);
561 kfree(entry);
562 }
563}
564
565static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs)
566{
567 struct ib_uverbs_device *ibudev = attrs->ufile->device;
568 struct ib_uverbs_open_xrcd_resp resp = {};
569 struct ib_uverbs_open_xrcd cmd;
570 struct ib_uxrcd_object *obj;
571 struct ib_xrcd *xrcd = NULL;
572 struct inode *inode = NULL;
573 int new_xrcd = 0;
574 struct ib_device *ib_dev;
575 struct fd f = {};
576 int ret;
577
578 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
579 if (ret)
580 return ret;
581
582 mutex_lock(&ibudev->xrcd_tree_mutex);
583
584 if (cmd.fd != -1) {
585 /* search for file descriptor */
586 f = fdget(cmd.fd);
587 if (!f.file) {
588 ret = -EBADF;
589 goto err_tree_mutex_unlock;
590 }
591
592 inode = file_inode(f.file);
593 xrcd = find_xrcd(ibudev, inode);
594 if (!xrcd && !(cmd.oflags & O_CREAT)) {
595 /* no file descriptor. Need CREATE flag */
596 ret = -EAGAIN;
597 goto err_tree_mutex_unlock;
598 }
599
600 if (xrcd && cmd.oflags & O_EXCL) {
601 ret = -EINVAL;
602 goto err_tree_mutex_unlock;
603 }
604 }
605
606 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs,
607 &ib_dev);
608 if (IS_ERR(obj)) {
609 ret = PTR_ERR(obj);
610 goto err_tree_mutex_unlock;
611 }
612
613 if (!xrcd) {
614 xrcd = ib_alloc_xrcd_user(ib_dev, inode, &attrs->driver_udata);
615 if (IS_ERR(xrcd)) {
616 ret = PTR_ERR(xrcd);
617 goto err;
618 }
619 new_xrcd = 1;
620 }
621
622 atomic_set(&obj->refcnt, 0);
623 obj->uobject.object = xrcd;
624
625 if (inode) {
626 if (new_xrcd) {
627 /* create new inode/xrcd table entry */
628 ret = xrcd_table_insert(ibudev, inode, xrcd);
629 if (ret)
630 goto err_dealloc_xrcd;
631 }
632 atomic_inc(&xrcd->usecnt);
633 }
634
635 if (f.file)
636 fdput(f);
637
638 mutex_unlock(&ibudev->xrcd_tree_mutex);
639 uobj_finalize_uobj_create(&obj->uobject, attrs);
640
641 resp.xrcd_handle = obj->uobject.id;
642 return uverbs_response(attrs, &resp, sizeof(resp));
643
644err_dealloc_xrcd:
645 ib_dealloc_xrcd_user(xrcd, uverbs_get_cleared_udata(attrs));
646
647err:
648 uobj_alloc_abort(&obj->uobject, attrs);
649
650err_tree_mutex_unlock:
651 if (f.file)
652 fdput(f);
653
654 mutex_unlock(&ibudev->xrcd_tree_mutex);
655
656 return ret;
657}
658
659static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs)
660{
661 struct ib_uverbs_close_xrcd cmd;
662 int ret;
663
664 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
665 if (ret)
666 return ret;
667
668 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs);
669}
670
671int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd,
672 enum rdma_remove_reason why,
673 struct uverbs_attr_bundle *attrs)
674{
675 struct inode *inode;
676 int ret;
677 struct ib_uverbs_device *dev = attrs->ufile->device;
678
679 inode = xrcd->inode;
680 if (inode && !atomic_dec_and_test(&xrcd->usecnt))
681 return 0;
682
683 ret = ib_dealloc_xrcd_user(xrcd, &attrs->driver_udata);
684 if (ret) {
685 atomic_inc(&xrcd->usecnt);
686 return ret;
687 }
688
689 if (inode)
690 xrcd_table_delete(dev, inode);
691
692 return 0;
693}
694
695static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs)
696{
697 struct ib_uverbs_reg_mr_resp resp = {};
698 struct ib_uverbs_reg_mr cmd;
699 struct ib_uobject *uobj;
700 struct ib_pd *pd;
701 struct ib_mr *mr;
702 int ret;
703 struct ib_device *ib_dev;
704
705 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
706 if (ret)
707 return ret;
708
709 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
710 return -EINVAL;
711
712 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
713 if (IS_ERR(uobj))
714 return PTR_ERR(uobj);
715
716 ret = ib_check_mr_access(ib_dev, cmd.access_flags);
717 if (ret)
718 goto err_free;
719
720 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
721 if (!pd) {
722 ret = -EINVAL;
723 goto err_free;
724 }
725
726 mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
727 cmd.access_flags,
728 &attrs->driver_udata);
729 if (IS_ERR(mr)) {
730 ret = PTR_ERR(mr);
731 goto err_put;
732 }
733
734 mr->device = pd->device;
735 mr->pd = pd;
736 mr->type = IB_MR_TYPE_USER;
737 mr->dm = NULL;
738 mr->sig_attrs = NULL;
739 mr->uobject = uobj;
740 atomic_inc(&pd->usecnt);
741 mr->iova = cmd.hca_va;
742 mr->length = cmd.length;
743
744 rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
745 rdma_restrack_set_name(&mr->res, NULL);
746 rdma_restrack_add(&mr->res);
747
748 uobj->object = mr;
749 uobj_put_obj_read(pd);
750 uobj_finalize_uobj_create(uobj, attrs);
751
752 resp.lkey = mr->lkey;
753 resp.rkey = mr->rkey;
754 resp.mr_handle = uobj->id;
755 return uverbs_response(attrs, &resp, sizeof(resp));
756
757err_put:
758 uobj_put_obj_read(pd);
759err_free:
760 uobj_alloc_abort(uobj, attrs);
761 return ret;
762}
763
764static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs)
765{
766 struct ib_uverbs_rereg_mr cmd;
767 struct ib_uverbs_rereg_mr_resp resp;
768 struct ib_mr *mr;
769 int ret;
770 struct ib_uobject *uobj;
771 struct ib_uobject *new_uobj;
772 struct ib_device *ib_dev;
773 struct ib_pd *orig_pd;
774 struct ib_pd *new_pd;
775 struct ib_mr *new_mr;
776
777 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
778 if (ret)
779 return ret;
780
781 if (!cmd.flags)
782 return -EINVAL;
783
784 if (cmd.flags & ~IB_MR_REREG_SUPPORTED)
785 return -EOPNOTSUPP;
786
787 if ((cmd.flags & IB_MR_REREG_TRANS) &&
788 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
789 return -EINVAL;
790
791 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
792 if (IS_ERR(uobj))
793 return PTR_ERR(uobj);
794
795 mr = uobj->object;
796
797 if (mr->dm) {
798 ret = -EINVAL;
799 goto put_uobjs;
800 }
801
802 if (cmd.flags & IB_MR_REREG_ACCESS) {
803 ret = ib_check_mr_access(mr->device, cmd.access_flags);
804 if (ret)
805 goto put_uobjs;
806 }
807
808 orig_pd = mr->pd;
809 if (cmd.flags & IB_MR_REREG_PD) {
810 new_pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle,
811 attrs);
812 if (!new_pd) {
813 ret = -EINVAL;
814 goto put_uobjs;
815 }
816 } else {
817 new_pd = mr->pd;
818 }
819
820 /*
821 * The driver might create a new HW object as part of the rereg, we need
822 * to have a uobject ready to hold it.
823 */
824 new_uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
825 if (IS_ERR(new_uobj)) {
826 ret = PTR_ERR(new_uobj);
827 goto put_uobj_pd;
828 }
829
830 new_mr = ib_dev->ops.rereg_user_mr(mr, cmd.flags, cmd.start, cmd.length,
831 cmd.hca_va, cmd.access_flags, new_pd,
832 &attrs->driver_udata);
833 if (IS_ERR(new_mr)) {
834 ret = PTR_ERR(new_mr);
835 goto put_new_uobj;
836 }
837 if (new_mr) {
838 new_mr->device = new_pd->device;
839 new_mr->pd = new_pd;
840 new_mr->type = IB_MR_TYPE_USER;
841 new_mr->uobject = uobj;
842 atomic_inc(&new_pd->usecnt);
843 new_uobj->object = new_mr;
844
845 rdma_restrack_new(&new_mr->res, RDMA_RESTRACK_MR);
846 rdma_restrack_set_name(&new_mr->res, NULL);
847 rdma_restrack_add(&new_mr->res);
848
849 /*
850 * The new uobj for the new HW object is put into the same spot
851 * in the IDR and the old uobj & HW object is deleted.
852 */
853 rdma_assign_uobject(uobj, new_uobj, attrs);
854 rdma_alloc_commit_uobject(new_uobj, attrs);
855 uobj_put_destroy(uobj);
856 new_uobj = NULL;
857 uobj = NULL;
858 mr = new_mr;
859 } else {
860 if (cmd.flags & IB_MR_REREG_PD) {
861 atomic_dec(&orig_pd->usecnt);
862 mr->pd = new_pd;
863 atomic_inc(&new_pd->usecnt);
864 }
865 if (cmd.flags & IB_MR_REREG_TRANS) {
866 mr->iova = cmd.hca_va;
867 mr->length = cmd.length;
868 }
869 }
870
871 memset(&resp, 0, sizeof(resp));
872 resp.lkey = mr->lkey;
873 resp.rkey = mr->rkey;
874
875 ret = uverbs_response(attrs, &resp, sizeof(resp));
876
877put_new_uobj:
878 if (new_uobj)
879 uobj_alloc_abort(new_uobj, attrs);
880put_uobj_pd:
881 if (cmd.flags & IB_MR_REREG_PD)
882 uobj_put_obj_read(new_pd);
883
884put_uobjs:
885 if (uobj)
886 uobj_put_write(uobj);
887
888 return ret;
889}
890
891static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs)
892{
893 struct ib_uverbs_dereg_mr cmd;
894 int ret;
895
896 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
897 if (ret)
898 return ret;
899
900 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
901}
902
903static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
904{
905 struct ib_uverbs_alloc_mw cmd;
906 struct ib_uverbs_alloc_mw_resp resp = {};
907 struct ib_uobject *uobj;
908 struct ib_pd *pd;
909 struct ib_mw *mw;
910 int ret;
911 struct ib_device *ib_dev;
912
913 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
914 if (ret)
915 return ret;
916
917 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev);
918 if (IS_ERR(uobj))
919 return PTR_ERR(uobj);
920
921 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
922 if (!pd) {
923 ret = -EINVAL;
924 goto err_free;
925 }
926
927 if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) {
928 ret = -EINVAL;
929 goto err_put;
930 }
931
932 mw = rdma_zalloc_drv_obj(ib_dev, ib_mw);
933 if (!mw) {
934 ret = -ENOMEM;
935 goto err_put;
936 }
937
938 mw->device = ib_dev;
939 mw->pd = pd;
940 mw->uobject = uobj;
941 mw->type = cmd.mw_type;
942
943 ret = pd->device->ops.alloc_mw(mw, &attrs->driver_udata);
944 if (ret)
945 goto err_alloc;
946
947 atomic_inc(&pd->usecnt);
948
949 uobj->object = mw;
950 uobj_put_obj_read(pd);
951 uobj_finalize_uobj_create(uobj, attrs);
952
953 resp.rkey = mw->rkey;
954 resp.mw_handle = uobj->id;
955 return uverbs_response(attrs, &resp, sizeof(resp));
956
957err_alloc:
958 kfree(mw);
959err_put:
960 uobj_put_obj_read(pd);
961err_free:
962 uobj_alloc_abort(uobj, attrs);
963 return ret;
964}
965
966static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs)
967{
968 struct ib_uverbs_dealloc_mw cmd;
969 int ret;
970
971 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
972 if (ret)
973 return ret;
974
975 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs);
976}
977
978static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs)
979{
980 struct ib_uverbs_create_comp_channel cmd;
981 struct ib_uverbs_create_comp_channel_resp resp;
982 struct ib_uobject *uobj;
983 struct ib_uverbs_completion_event_file *ev_file;
984 struct ib_device *ib_dev;
985 int ret;
986
987 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
988 if (ret)
989 return ret;
990
991 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev);
992 if (IS_ERR(uobj))
993 return PTR_ERR(uobj);
994
995 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file,
996 uobj);
997 ib_uverbs_init_event_queue(&ev_file->ev_queue);
998 uobj_finalize_uobj_create(uobj, attrs);
999
1000 resp.fd = uobj->id;
1001 return uverbs_response(attrs, &resp, sizeof(resp));
1002}
1003
1004static int create_cq(struct uverbs_attr_bundle *attrs,
1005 struct ib_uverbs_ex_create_cq *cmd)
1006{
1007 struct ib_ucq_object *obj;
1008 struct ib_uverbs_completion_event_file *ev_file = NULL;
1009 struct ib_cq *cq;
1010 int ret;
1011 struct ib_uverbs_ex_create_cq_resp resp = {};
1012 struct ib_cq_init_attr attr = {};
1013 struct ib_device *ib_dev;
1014
1015 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors)
1016 return -EINVAL;
1017
1018 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs,
1019 &ib_dev);
1020 if (IS_ERR(obj))
1021 return PTR_ERR(obj);
1022
1023 if (cmd->comp_channel >= 0) {
1024 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs);
1025 if (IS_ERR(ev_file)) {
1026 ret = PTR_ERR(ev_file);
1027 goto err;
1028 }
1029 }
1030
1031 obj->uevent.uobject.user_handle = cmd->user_handle;
1032 INIT_LIST_HEAD(&obj->comp_list);
1033 INIT_LIST_HEAD(&obj->uevent.event_list);
1034
1035 attr.cqe = cmd->cqe;
1036 attr.comp_vector = cmd->comp_vector;
1037 attr.flags = cmd->flags;
1038
1039 cq = rdma_zalloc_drv_obj(ib_dev, ib_cq);
1040 if (!cq) {
1041 ret = -ENOMEM;
1042 goto err_file;
1043 }
1044 cq->device = ib_dev;
1045 cq->uobject = obj;
1046 cq->comp_handler = ib_uverbs_comp_handler;
1047 cq->event_handler = ib_uverbs_cq_event_handler;
1048 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
1049 atomic_set(&cq->usecnt, 0);
1050
1051 rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ);
1052 rdma_restrack_set_name(&cq->res, NULL);
1053
1054 ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata);
1055 if (ret)
1056 goto err_free;
1057 rdma_restrack_add(&cq->res);
1058
1059 obj->uevent.uobject.object = cq;
1060 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
1061 if (obj->uevent.event_file)
1062 uverbs_uobject_get(&obj->uevent.event_file->uobj);
1063 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1064
1065 resp.base.cq_handle = obj->uevent.uobject.id;
1066 resp.base.cqe = cq->cqe;
1067 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1068 return uverbs_response(attrs, &resp, sizeof(resp));
1069
1070err_free:
1071 rdma_restrack_put(&cq->res);
1072 kfree(cq);
1073err_file:
1074 if (ev_file)
1075 ib_uverbs_release_ucq(ev_file, obj);
1076err:
1077 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1078 return ret;
1079}
1080
1081static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs)
1082{
1083 struct ib_uverbs_create_cq cmd;
1084 struct ib_uverbs_ex_create_cq cmd_ex;
1085 int ret;
1086
1087 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1088 if (ret)
1089 return ret;
1090
1091 memset(&cmd_ex, 0, sizeof(cmd_ex));
1092 cmd_ex.user_handle = cmd.user_handle;
1093 cmd_ex.cqe = cmd.cqe;
1094 cmd_ex.comp_vector = cmd.comp_vector;
1095 cmd_ex.comp_channel = cmd.comp_channel;
1096
1097 return create_cq(attrs, &cmd_ex);
1098}
1099
1100static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs)
1101{
1102 struct ib_uverbs_ex_create_cq cmd;
1103 int ret;
1104
1105 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1106 if (ret)
1107 return ret;
1108
1109 if (cmd.comp_mask)
1110 return -EINVAL;
1111
1112 if (cmd.reserved)
1113 return -EINVAL;
1114
1115 return create_cq(attrs, &cmd);
1116}
1117
1118static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs)
1119{
1120 struct ib_uverbs_resize_cq cmd;
1121 struct ib_uverbs_resize_cq_resp resp = {};
1122 struct ib_cq *cq;
1123 int ret;
1124
1125 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1126 if (ret)
1127 return ret;
1128
1129 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1130 if (!cq)
1131 return -EINVAL;
1132
1133 ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata);
1134 if (ret)
1135 goto out;
1136
1137 resp.cqe = cq->cqe;
1138
1139 ret = uverbs_response(attrs, &resp, sizeof(resp));
1140out:
1141 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1142 UVERBS_LOOKUP_READ);
1143
1144 return ret;
1145}
1146
1147static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest,
1148 struct ib_wc *wc)
1149{
1150 struct ib_uverbs_wc tmp;
1151
1152 tmp.wr_id = wc->wr_id;
1153 tmp.status = wc->status;
1154 tmp.opcode = wc->opcode;
1155 tmp.vendor_err = wc->vendor_err;
1156 tmp.byte_len = wc->byte_len;
1157 tmp.ex.imm_data = wc->ex.imm_data;
1158 tmp.qp_num = wc->qp->qp_num;
1159 tmp.src_qp = wc->src_qp;
1160 tmp.wc_flags = wc->wc_flags;
1161 tmp.pkey_index = wc->pkey_index;
1162 if (rdma_cap_opa_ah(ib_dev, wc->port_num))
1163 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid);
1164 else
1165 tmp.slid = ib_lid_cpu16(wc->slid);
1166 tmp.sl = wc->sl;
1167 tmp.dlid_path_bits = wc->dlid_path_bits;
1168 tmp.port_num = wc->port_num;
1169 tmp.reserved = 0;
1170
1171 if (copy_to_user(dest, &tmp, sizeof tmp))
1172 return -EFAULT;
1173
1174 return 0;
1175}
1176
1177static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs)
1178{
1179 struct ib_uverbs_poll_cq cmd;
1180 struct ib_uverbs_poll_cq_resp resp;
1181 u8 __user *header_ptr;
1182 u8 __user *data_ptr;
1183 struct ib_cq *cq;
1184 struct ib_wc wc;
1185 int ret;
1186
1187 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1188 if (ret)
1189 return ret;
1190
1191 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1192 if (!cq)
1193 return -EINVAL;
1194
1195 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1196 header_ptr = attrs->ucore.outbuf;
1197 data_ptr = header_ptr + sizeof resp;
1198
1199 memset(&resp, 0, sizeof resp);
1200 while (resp.count < cmd.ne) {
1201 ret = ib_poll_cq(cq, 1, &wc);
1202 if (ret < 0)
1203 goto out_put;
1204 if (!ret)
1205 break;
1206
1207 ret = copy_wc_to_user(cq->device, data_ptr, &wc);
1208 if (ret)
1209 goto out_put;
1210
1211 data_ptr += sizeof(struct ib_uverbs_wc);
1212 ++resp.count;
1213 }
1214
1215 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1216 ret = -EFAULT;
1217 goto out_put;
1218 }
1219 ret = 0;
1220
1221 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
1222 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT);
1223
1224out_put:
1225 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1226 UVERBS_LOOKUP_READ);
1227 return ret;
1228}
1229
1230static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs)
1231{
1232 struct ib_uverbs_req_notify_cq cmd;
1233 struct ib_cq *cq;
1234 int ret;
1235
1236 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1237 if (ret)
1238 return ret;
1239
1240 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1241 if (!cq)
1242 return -EINVAL;
1243
1244 ib_req_notify_cq(cq, cmd.solicited_only ?
1245 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1246
1247 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1248 UVERBS_LOOKUP_READ);
1249 return 0;
1250}
1251
1252static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs)
1253{
1254 struct ib_uverbs_destroy_cq cmd;
1255 struct ib_uverbs_destroy_cq_resp resp;
1256 struct ib_uobject *uobj;
1257 struct ib_ucq_object *obj;
1258 int ret;
1259
1260 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1261 if (ret)
1262 return ret;
1263
1264 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1265 if (IS_ERR(uobj))
1266 return PTR_ERR(uobj);
1267
1268 obj = container_of(uobj, struct ib_ucq_object, uevent.uobject);
1269 memset(&resp, 0, sizeof(resp));
1270 resp.comp_events_reported = obj->comp_events_reported;
1271 resp.async_events_reported = obj->uevent.events_reported;
1272
1273 uobj_put_destroy(uobj);
1274
1275 return uverbs_response(attrs, &resp, sizeof(resp));
1276}
1277
1278static int create_qp(struct uverbs_attr_bundle *attrs,
1279 struct ib_uverbs_ex_create_qp *cmd)
1280{
1281 struct ib_uqp_object *obj;
1282 struct ib_device *device;
1283 struct ib_pd *pd = NULL;
1284 struct ib_xrcd *xrcd = NULL;
1285 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT);
1286 struct ib_cq *scq = NULL, *rcq = NULL;
1287 struct ib_srq *srq = NULL;
1288 struct ib_qp *qp;
1289 struct ib_qp_init_attr attr = {};
1290 struct ib_uverbs_ex_create_qp_resp resp = {};
1291 int ret;
1292 struct ib_rwq_ind_table *ind_tbl = NULL;
1293 bool has_sq = true;
1294 struct ib_device *ib_dev;
1295
1296 switch (cmd->qp_type) {
1297 case IB_QPT_RAW_PACKET:
1298 if (!capable(CAP_NET_RAW))
1299 return -EPERM;
1300 break;
1301 case IB_QPT_RC:
1302 case IB_QPT_UC:
1303 case IB_QPT_UD:
1304 case IB_QPT_XRC_INI:
1305 case IB_QPT_XRC_TGT:
1306 case IB_QPT_DRIVER:
1307 break;
1308 default:
1309 return -EINVAL;
1310 }
1311
1312 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1313 &ib_dev);
1314 if (IS_ERR(obj))
1315 return PTR_ERR(obj);
1316 obj->uxrcd = NULL;
1317 obj->uevent.uobject.user_handle = cmd->user_handle;
1318 mutex_init(&obj->mcast_lock);
1319
1320 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) {
1321 ind_tbl = uobj_get_obj_read(rwq_ind_table,
1322 UVERBS_OBJECT_RWQ_IND_TBL,
1323 cmd->rwq_ind_tbl_handle, attrs);
1324 if (!ind_tbl) {
1325 ret = -EINVAL;
1326 goto err_put;
1327 }
1328
1329 attr.rwq_ind_tbl = ind_tbl;
1330 }
1331
1332 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1333 ret = -EINVAL;
1334 goto err_put;
1335 }
1336
1337 if (ind_tbl && !cmd->max_send_wr)
1338 has_sq = false;
1339
1340 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1341 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle,
1342 attrs);
1343
1344 if (IS_ERR(xrcd_uobj)) {
1345 ret = -EINVAL;
1346 goto err_put;
1347 }
1348
1349 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1350 if (!xrcd) {
1351 ret = -EINVAL;
1352 goto err_put;
1353 }
1354 device = xrcd->device;
1355 } else {
1356 if (cmd->qp_type == IB_QPT_XRC_INI) {
1357 cmd->max_recv_wr = 0;
1358 cmd->max_recv_sge = 0;
1359 } else {
1360 if (cmd->is_srq) {
1361 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ,
1362 cmd->srq_handle, attrs);
1363 if (!srq || srq->srq_type == IB_SRQT_XRC) {
1364 ret = -EINVAL;
1365 goto err_put;
1366 }
1367 }
1368
1369 if (!ind_tbl) {
1370 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1371 rcq = uobj_get_obj_read(
1372 cq, UVERBS_OBJECT_CQ,
1373 cmd->recv_cq_handle, attrs);
1374 if (!rcq) {
1375 ret = -EINVAL;
1376 goto err_put;
1377 }
1378 }
1379 }
1380 }
1381
1382 if (has_sq)
1383 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
1384 cmd->send_cq_handle, attrs);
1385 if (!ind_tbl && cmd->qp_type != IB_QPT_XRC_INI)
1386 rcq = rcq ?: scq;
1387 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle,
1388 attrs);
1389 if (!pd || (!scq && has_sq)) {
1390 ret = -EINVAL;
1391 goto err_put;
1392 }
1393
1394 device = pd->device;
1395 }
1396
1397 attr.event_handler = ib_uverbs_qp_event_handler;
1398 attr.send_cq = scq;
1399 attr.recv_cq = rcq;
1400 attr.srq = srq;
1401 attr.xrcd = xrcd;
1402 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1403 IB_SIGNAL_REQ_WR;
1404 attr.qp_type = cmd->qp_type;
1405
1406 attr.cap.max_send_wr = cmd->max_send_wr;
1407 attr.cap.max_recv_wr = cmd->max_recv_wr;
1408 attr.cap.max_send_sge = cmd->max_send_sge;
1409 attr.cap.max_recv_sge = cmd->max_recv_sge;
1410 attr.cap.max_inline_data = cmd->max_inline_data;
1411
1412 INIT_LIST_HEAD(&obj->uevent.event_list);
1413 INIT_LIST_HEAD(&obj->mcast_list);
1414
1415 attr.create_flags = cmd->create_flags;
1416 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1417 IB_QP_CREATE_CROSS_CHANNEL |
1418 IB_QP_CREATE_MANAGED_SEND |
1419 IB_QP_CREATE_MANAGED_RECV |
1420 IB_QP_CREATE_SCATTER_FCS |
1421 IB_QP_CREATE_CVLAN_STRIPPING |
1422 IB_QP_CREATE_SOURCE_QPN |
1423 IB_QP_CREATE_PCI_WRITE_END_PADDING)) {
1424 ret = -EINVAL;
1425 goto err_put;
1426 }
1427
1428 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) {
1429 if (!capable(CAP_NET_RAW)) {
1430 ret = -EPERM;
1431 goto err_put;
1432 }
1433
1434 attr.source_qpn = cmd->source_qpn;
1435 }
1436
1437 qp = ib_create_qp_user(device, pd, &attr, &attrs->driver_udata, obj,
1438 KBUILD_MODNAME);
1439 if (IS_ERR(qp)) {
1440 ret = PTR_ERR(qp);
1441 goto err_put;
1442 }
1443 ib_qp_usecnt_inc(qp);
1444
1445 obj->uevent.uobject.object = qp;
1446 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
1447 if (obj->uevent.event_file)
1448 uverbs_uobject_get(&obj->uevent.event_file->uobj);
1449
1450 if (xrcd) {
1451 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1452 uobject);
1453 atomic_inc(&obj->uxrcd->refcnt);
1454 uobj_put_read(xrcd_uobj);
1455 }
1456
1457 if (pd)
1458 uobj_put_obj_read(pd);
1459 if (scq)
1460 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject,
1461 UVERBS_LOOKUP_READ);
1462 if (rcq && rcq != scq)
1463 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject,
1464 UVERBS_LOOKUP_READ);
1465 if (srq)
1466 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
1467 UVERBS_LOOKUP_READ);
1468 if (ind_tbl)
1469 uobj_put_obj_read(ind_tbl);
1470 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1471
1472 resp.base.qpn = qp->qp_num;
1473 resp.base.qp_handle = obj->uevent.uobject.id;
1474 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1475 resp.base.max_send_sge = attr.cap.max_send_sge;
1476 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1477 resp.base.max_send_wr = attr.cap.max_send_wr;
1478 resp.base.max_inline_data = attr.cap.max_inline_data;
1479 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1480 return uverbs_response(attrs, &resp, sizeof(resp));
1481
1482err_put:
1483 if (!IS_ERR(xrcd_uobj))
1484 uobj_put_read(xrcd_uobj);
1485 if (pd)
1486 uobj_put_obj_read(pd);
1487 if (scq)
1488 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject,
1489 UVERBS_LOOKUP_READ);
1490 if (rcq && rcq != scq)
1491 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject,
1492 UVERBS_LOOKUP_READ);
1493 if (srq)
1494 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
1495 UVERBS_LOOKUP_READ);
1496 if (ind_tbl)
1497 uobj_put_obj_read(ind_tbl);
1498
1499 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1500 return ret;
1501}
1502
1503static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs)
1504{
1505 struct ib_uverbs_create_qp cmd;
1506 struct ib_uverbs_ex_create_qp cmd_ex;
1507 int ret;
1508
1509 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1510 if (ret)
1511 return ret;
1512
1513 memset(&cmd_ex, 0, sizeof(cmd_ex));
1514 cmd_ex.user_handle = cmd.user_handle;
1515 cmd_ex.pd_handle = cmd.pd_handle;
1516 cmd_ex.send_cq_handle = cmd.send_cq_handle;
1517 cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1518 cmd_ex.srq_handle = cmd.srq_handle;
1519 cmd_ex.max_send_wr = cmd.max_send_wr;
1520 cmd_ex.max_recv_wr = cmd.max_recv_wr;
1521 cmd_ex.max_send_sge = cmd.max_send_sge;
1522 cmd_ex.max_recv_sge = cmd.max_recv_sge;
1523 cmd_ex.max_inline_data = cmd.max_inline_data;
1524 cmd_ex.sq_sig_all = cmd.sq_sig_all;
1525 cmd_ex.qp_type = cmd.qp_type;
1526 cmd_ex.is_srq = cmd.is_srq;
1527
1528 return create_qp(attrs, &cmd_ex);
1529}
1530
1531static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs)
1532{
1533 struct ib_uverbs_ex_create_qp cmd;
1534 int ret;
1535
1536 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1537 if (ret)
1538 return ret;
1539
1540 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1541 return -EINVAL;
1542
1543 if (cmd.reserved)
1544 return -EINVAL;
1545
1546 return create_qp(attrs, &cmd);
1547}
1548
1549static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs)
1550{
1551 struct ib_uverbs_create_qp_resp resp = {};
1552 struct ib_uverbs_open_qp cmd;
1553 struct ib_uqp_object *obj;
1554 struct ib_xrcd *xrcd;
1555 struct ib_qp *qp;
1556 struct ib_qp_open_attr attr = {};
1557 int ret;
1558 struct ib_uobject *xrcd_uobj;
1559 struct ib_device *ib_dev;
1560
1561 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1562 if (ret)
1563 return ret;
1564
1565 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1566 &ib_dev);
1567 if (IS_ERR(obj))
1568 return PTR_ERR(obj);
1569
1570 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs);
1571 if (IS_ERR(xrcd_uobj)) {
1572 ret = -EINVAL;
1573 goto err_put;
1574 }
1575
1576 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1577 if (!xrcd) {
1578 ret = -EINVAL;
1579 goto err_xrcd;
1580 }
1581
1582 attr.event_handler = ib_uverbs_qp_event_handler;
1583 attr.qp_num = cmd.qpn;
1584 attr.qp_type = cmd.qp_type;
1585
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 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1599 atomic_inc(&obj->uxrcd->refcnt);
1600 qp->uobject = obj;
1601 uobj_put_read(xrcd_uobj);
1602 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1603
1604 resp.qpn = qp->qp_num;
1605 resp.qp_handle = obj->uevent.uobject.id;
1606 return uverbs_response(attrs, &resp, sizeof(resp));
1607
1608err_xrcd:
1609 uobj_put_read(xrcd_uobj);
1610err_put:
1611 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1612 return ret;
1613}
1614
1615static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr,
1616 struct rdma_ah_attr *rdma_attr)
1617{
1618 const struct ib_global_route *grh;
1619
1620 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr);
1621 uverb_attr->sl = rdma_ah_get_sl(rdma_attr);
1622 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr);
1623 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr);
1624 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) &
1625 IB_AH_GRH);
1626 if (uverb_attr->is_global) {
1627 grh = rdma_ah_read_grh(rdma_attr);
1628 memcpy(uverb_attr->dgid, grh->dgid.raw, 16);
1629 uverb_attr->flow_label = grh->flow_label;
1630 uverb_attr->sgid_index = grh->sgid_index;
1631 uverb_attr->hop_limit = grh->hop_limit;
1632 uverb_attr->traffic_class = grh->traffic_class;
1633 }
1634 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr);
1635}
1636
1637static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs)
1638{
1639 struct ib_uverbs_query_qp cmd;
1640 struct ib_uverbs_query_qp_resp resp;
1641 struct ib_qp *qp;
1642 struct ib_qp_attr *attr;
1643 struct ib_qp_init_attr *init_attr;
1644 int ret;
1645
1646 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1647 if (ret)
1648 return ret;
1649
1650 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1651 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1652 if (!attr || !init_attr) {
1653 ret = -ENOMEM;
1654 goto out;
1655 }
1656
1657 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1658 if (!qp) {
1659 ret = -EINVAL;
1660 goto out;
1661 }
1662
1663 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1664
1665 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
1666 UVERBS_LOOKUP_READ);
1667
1668 if (ret)
1669 goto out;
1670
1671 memset(&resp, 0, sizeof resp);
1672
1673 resp.qp_state = attr->qp_state;
1674 resp.cur_qp_state = attr->cur_qp_state;
1675 resp.path_mtu = attr->path_mtu;
1676 resp.path_mig_state = attr->path_mig_state;
1677 resp.qkey = attr->qkey;
1678 resp.rq_psn = attr->rq_psn;
1679 resp.sq_psn = attr->sq_psn;
1680 resp.dest_qp_num = attr->dest_qp_num;
1681 resp.qp_access_flags = attr->qp_access_flags;
1682 resp.pkey_index = attr->pkey_index;
1683 resp.alt_pkey_index = attr->alt_pkey_index;
1684 resp.sq_draining = attr->sq_draining;
1685 resp.max_rd_atomic = attr->max_rd_atomic;
1686 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1687 resp.min_rnr_timer = attr->min_rnr_timer;
1688 resp.port_num = attr->port_num;
1689 resp.timeout = attr->timeout;
1690 resp.retry_cnt = attr->retry_cnt;
1691 resp.rnr_retry = attr->rnr_retry;
1692 resp.alt_port_num = attr->alt_port_num;
1693 resp.alt_timeout = attr->alt_timeout;
1694
1695 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr);
1696 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr);
1697
1698 resp.max_send_wr = init_attr->cap.max_send_wr;
1699 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1700 resp.max_send_sge = init_attr->cap.max_send_sge;
1701 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1702 resp.max_inline_data = init_attr->cap.max_inline_data;
1703 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1704
1705 ret = uverbs_response(attrs, &resp, sizeof(resp));
1706
1707out:
1708 kfree(attr);
1709 kfree(init_attr);
1710
1711 return ret;
1712}
1713
1714/* Remove ignored fields set in the attribute mask */
1715static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1716{
1717 switch (qp_type) {
1718 case IB_QPT_XRC_INI:
1719 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1720 case IB_QPT_XRC_TGT:
1721 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1722 IB_QP_RNR_RETRY);
1723 default:
1724 return mask;
1725 }
1726}
1727
1728static void copy_ah_attr_from_uverbs(struct ib_device *dev,
1729 struct rdma_ah_attr *rdma_attr,
1730 struct ib_uverbs_qp_dest *uverb_attr)
1731{
1732 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num);
1733 if (uverb_attr->is_global) {
1734 rdma_ah_set_grh(rdma_attr, NULL,
1735 uverb_attr->flow_label,
1736 uverb_attr->sgid_index,
1737 uverb_attr->hop_limit,
1738 uverb_attr->traffic_class);
1739 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid);
1740 } else {
1741 rdma_ah_set_ah_flags(rdma_attr, 0);
1742 }
1743 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid);
1744 rdma_ah_set_sl(rdma_attr, uverb_attr->sl);
1745 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits);
1746 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate);
1747 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num);
1748 rdma_ah_set_make_grd(rdma_attr, false);
1749}
1750
1751static int modify_qp(struct uverbs_attr_bundle *attrs,
1752 struct ib_uverbs_ex_modify_qp *cmd)
1753{
1754 struct ib_qp_attr *attr;
1755 struct ib_qp *qp;
1756 int ret;
1757
1758 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1759 if (!attr)
1760 return -ENOMEM;
1761
1762 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle,
1763 attrs);
1764 if (!qp) {
1765 ret = -EINVAL;
1766 goto out;
1767 }
1768
1769 if ((cmd->base.attr_mask & IB_QP_PORT) &&
1770 !rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1771 ret = -EINVAL;
1772 goto release_qp;
1773 }
1774
1775 if ((cmd->base.attr_mask & IB_QP_AV)) {
1776 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) {
1777 ret = -EINVAL;
1778 goto release_qp;
1779 }
1780
1781 if (cmd->base.attr_mask & IB_QP_STATE &&
1782 cmd->base.qp_state == IB_QPS_RTR) {
1783 /* We are in INIT->RTR TRANSITION (if we are not,
1784 * this transition will be rejected in subsequent checks).
1785 * In the INIT->RTR transition, we cannot have IB_QP_PORT set,
1786 * but the IB_QP_STATE flag is required.
1787 *
1788 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver,
1789 * when IB_QP_AV is set, has required inclusion of a valid
1790 * port number in the primary AV. (AVs are created and handled
1791 * differently for infiniband and ethernet (RoCE) ports).
1792 *
1793 * Check the port number included in the primary AV against
1794 * the port number in the qp struct, which was set (and saved)
1795 * in the RST->INIT transition.
1796 */
1797 if (cmd->base.dest.port_num != qp->real_qp->port) {
1798 ret = -EINVAL;
1799 goto release_qp;
1800 }
1801 } else {
1802 /* We are in SQD->SQD. (If we are not, this transition will
1803 * be rejected later in the verbs layer checks).
1804 * Check for both IB_QP_PORT and IB_QP_AV, these can be set
1805 * together in the SQD->SQD transition.
1806 *
1807 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the
1808 * verbs layer driver does not track primary port changes
1809 * resulting from path migration. Thus, in SQD, if the primary
1810 * AV is modified, the primary port should also be modified).
1811 *
1812 * Note that in this transition, the IB_QP_STATE flag
1813 * is not allowed.
1814 */
1815 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1816 == (IB_QP_AV | IB_QP_PORT)) &&
1817 cmd->base.port_num != cmd->base.dest.port_num) {
1818 ret = -EINVAL;
1819 goto release_qp;
1820 }
1821 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1822 == IB_QP_AV) {
1823 cmd->base.attr_mask |= IB_QP_PORT;
1824 cmd->base.port_num = cmd->base.dest.port_num;
1825 }
1826 }
1827 }
1828
1829 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) &&
1830 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) ||
1831 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) ||
1832 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) {
1833 ret = -EINVAL;
1834 goto release_qp;
1835 }
1836
1837 if ((cmd->base.attr_mask & IB_QP_CUR_STATE &&
1838 cmd->base.cur_qp_state > IB_QPS_ERR) ||
1839 (cmd->base.attr_mask & IB_QP_STATE &&
1840 cmd->base.qp_state > IB_QPS_ERR)) {
1841 ret = -EINVAL;
1842 goto release_qp;
1843 }
1844
1845 if (cmd->base.attr_mask & IB_QP_STATE)
1846 attr->qp_state = cmd->base.qp_state;
1847 if (cmd->base.attr_mask & IB_QP_CUR_STATE)
1848 attr->cur_qp_state = cmd->base.cur_qp_state;
1849 if (cmd->base.attr_mask & IB_QP_PATH_MTU)
1850 attr->path_mtu = cmd->base.path_mtu;
1851 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE)
1852 attr->path_mig_state = cmd->base.path_mig_state;
1853 if (cmd->base.attr_mask & IB_QP_QKEY) {
1854 if (cmd->base.qkey & IB_QP_SET_QKEY &&
1855 !rdma_nl_get_privileged_qkey()) {
1856 ret = -EPERM;
1857 goto release_qp;
1858 }
1859 attr->qkey = cmd->base.qkey;
1860 }
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
1908release_qp:
1909 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
1910 UVERBS_LOOKUP_READ);
1911out:
1912 kfree(attr);
1913
1914 return ret;
1915}
1916
1917static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs)
1918{
1919 struct ib_uverbs_ex_modify_qp cmd;
1920 int ret;
1921
1922 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base));
1923 if (ret)
1924 return ret;
1925
1926 if (cmd.base.attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
1927 return -EOPNOTSUPP;
1928
1929 return modify_qp(attrs, &cmd);
1930}
1931
1932static 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 if (cmd.base.attr_mask & ~(IB_QP_ATTR_STANDARD_BITS | IB_QP_RATE_LIMIT))
1949 return -EOPNOTSUPP;
1950
1951 ret = modify_qp(attrs, &cmd);
1952 if (ret)
1953 return ret;
1954
1955 return uverbs_response(attrs, &resp, sizeof(resp));
1956}
1957
1958static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs)
1959{
1960 struct ib_uverbs_destroy_qp cmd;
1961 struct ib_uverbs_destroy_qp_resp resp;
1962 struct ib_uobject *uobj;
1963 struct ib_uqp_object *obj;
1964 int ret;
1965
1966 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1967 if (ret)
1968 return ret;
1969
1970 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1971 if (IS_ERR(uobj))
1972 return PTR_ERR(uobj);
1973
1974 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
1975 memset(&resp, 0, sizeof(resp));
1976 resp.events_reported = obj->uevent.events_reported;
1977
1978 uobj_put_destroy(uobj);
1979
1980 return uverbs_response(attrs, &resp, sizeof(resp));
1981}
1982
1983static void *alloc_wr(size_t wr_size, __u32 num_sge)
1984{
1985 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof(struct ib_sge))) /
1986 sizeof(struct ib_sge))
1987 return NULL;
1988
1989 return kmalloc(ALIGN(wr_size, sizeof(struct ib_sge)) +
1990 num_sge * sizeof(struct ib_sge),
1991 GFP_KERNEL);
1992}
1993
1994static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs)
1995{
1996 struct ib_uverbs_post_send cmd;
1997 struct ib_uverbs_post_send_resp resp;
1998 struct ib_uverbs_send_wr *user_wr;
1999 struct ib_send_wr *wr = NULL, *last, *next;
2000 const struct ib_send_wr *bad_wr;
2001 struct ib_qp *qp;
2002 int i, sg_ind;
2003 int is_ud;
2004 int ret, ret2;
2005 size_t next_size;
2006 const struct ib_sge __user *sgls;
2007 const void __user *wqes;
2008 struct uverbs_req_iter iter;
2009
2010 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2011 if (ret)
2012 return ret;
2013 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count);
2014 if (IS_ERR(wqes))
2015 return PTR_ERR(wqes);
2016 sgls = uverbs_request_next_ptr(
2017 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge));
2018 if (IS_ERR(sgls))
2019 return PTR_ERR(sgls);
2020 ret = uverbs_request_finish(&iter);
2021 if (ret)
2022 return ret;
2023
2024 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2025 if (!user_wr)
2026 return -ENOMEM;
2027
2028 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2029 if (!qp) {
2030 ret = -EINVAL;
2031 goto out;
2032 }
2033
2034 is_ud = qp->qp_type == IB_QPT_UD;
2035 sg_ind = 0;
2036 last = NULL;
2037 for (i = 0; i < cmd.wr_count; ++i) {
2038 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size,
2039 cmd.wqe_size)) {
2040 ret = -EFAULT;
2041 goto out_put;
2042 }
2043
2044 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2045 ret = -EINVAL;
2046 goto out_put;
2047 }
2048
2049 if (is_ud) {
2050 struct ib_ud_wr *ud;
2051
2052 if (user_wr->opcode != IB_WR_SEND &&
2053 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2054 ret = -EINVAL;
2055 goto out_put;
2056 }
2057
2058 next_size = sizeof(*ud);
2059 ud = alloc_wr(next_size, user_wr->num_sge);
2060 if (!ud) {
2061 ret = -ENOMEM;
2062 goto out_put;
2063 }
2064
2065 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH,
2066 user_wr->wr.ud.ah, attrs);
2067 if (!ud->ah) {
2068 kfree(ud);
2069 ret = -EINVAL;
2070 goto out_put;
2071 }
2072 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2073 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2074
2075 next = &ud->wr;
2076 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2077 user_wr->opcode == IB_WR_RDMA_WRITE ||
2078 user_wr->opcode == IB_WR_RDMA_READ) {
2079 struct ib_rdma_wr *rdma;
2080
2081 next_size = sizeof(*rdma);
2082 rdma = alloc_wr(next_size, user_wr->num_sge);
2083 if (!rdma) {
2084 ret = -ENOMEM;
2085 goto out_put;
2086 }
2087
2088 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2089 rdma->rkey = user_wr->wr.rdma.rkey;
2090
2091 next = &rdma->wr;
2092 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2093 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2094 struct ib_atomic_wr *atomic;
2095
2096 next_size = sizeof(*atomic);
2097 atomic = alloc_wr(next_size, user_wr->num_sge);
2098 if (!atomic) {
2099 ret = -ENOMEM;
2100 goto out_put;
2101 }
2102
2103 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2104 atomic->compare_add = user_wr->wr.atomic.compare_add;
2105 atomic->swap = user_wr->wr.atomic.swap;
2106 atomic->rkey = user_wr->wr.atomic.rkey;
2107
2108 next = &atomic->wr;
2109 } else if (user_wr->opcode == IB_WR_SEND ||
2110 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2111 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2112 next_size = sizeof(*next);
2113 next = alloc_wr(next_size, user_wr->num_sge);
2114 if (!next) {
2115 ret = -ENOMEM;
2116 goto out_put;
2117 }
2118 } else {
2119 ret = -EINVAL;
2120 goto out_put;
2121 }
2122
2123 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2124 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2125 next->ex.imm_data =
2126 (__be32 __force) user_wr->ex.imm_data;
2127 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2128 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2129 }
2130
2131 if (!last)
2132 wr = next;
2133 else
2134 last->next = next;
2135 last = next;
2136
2137 next->next = NULL;
2138 next->wr_id = user_wr->wr_id;
2139 next->num_sge = user_wr->num_sge;
2140 next->opcode = user_wr->opcode;
2141 next->send_flags = user_wr->send_flags;
2142
2143 if (next->num_sge) {
2144 next->sg_list = (void *) next +
2145 ALIGN(next_size, sizeof(struct ib_sge));
2146 if (copy_from_user(next->sg_list, sgls + sg_ind,
2147 next->num_sge *
2148 sizeof(struct ib_sge))) {
2149 ret = -EFAULT;
2150 goto out_put;
2151 }
2152 sg_ind += next->num_sge;
2153 } else
2154 next->sg_list = NULL;
2155 }
2156
2157 resp.bad_wr = 0;
2158 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr);
2159 if (ret)
2160 for (next = wr; next; next = next->next) {
2161 ++resp.bad_wr;
2162 if (next == bad_wr)
2163 break;
2164 }
2165
2166 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2167 if (ret2)
2168 ret = ret2;
2169
2170out_put:
2171 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2172 UVERBS_LOOKUP_READ);
2173
2174 while (wr) {
2175 if (is_ud && ud_wr(wr)->ah)
2176 uobj_put_obj_read(ud_wr(wr)->ah);
2177 next = wr->next;
2178 kfree(wr);
2179 wr = next;
2180 }
2181
2182out:
2183 kfree(user_wr);
2184
2185 return ret;
2186}
2187
2188static struct ib_recv_wr *
2189ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
2190 u32 wqe_size, u32 sge_count)
2191{
2192 struct ib_uverbs_recv_wr *user_wr;
2193 struct ib_recv_wr *wr = NULL, *last, *next;
2194 int sg_ind;
2195 int i;
2196 int ret;
2197 const struct ib_sge __user *sgls;
2198 const void __user *wqes;
2199
2200 if (wqe_size < sizeof(struct ib_uverbs_recv_wr))
2201 return ERR_PTR(-EINVAL);
2202
2203 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count);
2204 if (IS_ERR(wqes))
2205 return ERR_CAST(wqes);
2206 sgls = uverbs_request_next_ptr(
2207 iter, sge_count * sizeof(struct ib_uverbs_sge));
2208 if (IS_ERR(sgls))
2209 return ERR_CAST(sgls);
2210 ret = uverbs_request_finish(iter);
2211 if (ret)
2212 return ERR_PTR(ret);
2213
2214 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2215 if (!user_wr)
2216 return ERR_PTR(-ENOMEM);
2217
2218 sg_ind = 0;
2219 last = NULL;
2220 for (i = 0; i < wr_count; ++i) {
2221 if (copy_from_user(user_wr, wqes + i * wqe_size,
2222 wqe_size)) {
2223 ret = -EFAULT;
2224 goto err;
2225 }
2226
2227 if (user_wr->num_sge + sg_ind > sge_count) {
2228 ret = -EINVAL;
2229 goto err;
2230 }
2231
2232 if (user_wr->num_sge >=
2233 (U32_MAX - ALIGN(sizeof(*next), sizeof(struct ib_sge))) /
2234 sizeof(struct ib_sge)) {
2235 ret = -EINVAL;
2236 goto err;
2237 }
2238
2239 next = kmalloc(ALIGN(sizeof(*next), sizeof(struct ib_sge)) +
2240 user_wr->num_sge * sizeof(struct ib_sge),
2241 GFP_KERNEL);
2242 if (!next) {
2243 ret = -ENOMEM;
2244 goto err;
2245 }
2246
2247 if (!last)
2248 wr = next;
2249 else
2250 last->next = next;
2251 last = next;
2252
2253 next->next = NULL;
2254 next->wr_id = user_wr->wr_id;
2255 next->num_sge = user_wr->num_sge;
2256
2257 if (next->num_sge) {
2258 next->sg_list = (void *)next +
2259 ALIGN(sizeof(*next), sizeof(struct ib_sge));
2260 if (copy_from_user(next->sg_list, sgls + sg_ind,
2261 next->num_sge *
2262 sizeof(struct ib_sge))) {
2263 ret = -EFAULT;
2264 goto err;
2265 }
2266 sg_ind += next->num_sge;
2267 } else
2268 next->sg_list = NULL;
2269 }
2270
2271 kfree(user_wr);
2272 return wr;
2273
2274err:
2275 kfree(user_wr);
2276
2277 while (wr) {
2278 next = wr->next;
2279 kfree(wr);
2280 wr = next;
2281 }
2282
2283 return ERR_PTR(ret);
2284}
2285
2286static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs)
2287{
2288 struct ib_uverbs_post_recv cmd;
2289 struct ib_uverbs_post_recv_resp resp;
2290 struct ib_recv_wr *wr, *next;
2291 const struct ib_recv_wr *bad_wr;
2292 struct ib_qp *qp;
2293 int ret, ret2;
2294 struct uverbs_req_iter iter;
2295
2296 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2297 if (ret)
2298 return ret;
2299
2300 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2301 cmd.sge_count);
2302 if (IS_ERR(wr))
2303 return PTR_ERR(wr);
2304
2305 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2306 if (!qp) {
2307 ret = -EINVAL;
2308 goto out;
2309 }
2310
2311 resp.bad_wr = 0;
2312 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr);
2313
2314 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2315 UVERBS_LOOKUP_READ);
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;
2327out:
2328 while (wr) {
2329 next = wr->next;
2330 kfree(wr);
2331 wr = next;
2332 }
2333
2334 return ret;
2335}
2336
2337static 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 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
2366 UVERBS_LOOKUP_READ);
2367
2368 if (ret)
2369 for (next = wr; next; next = next->next) {
2370 ++resp.bad_wr;
2371 if (next == bad_wr)
2372 break;
2373 }
2374
2375 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2376 if (ret2)
2377 ret = ret2;
2378
2379out:
2380 while (wr) {
2381 next = wr->next;
2382 kfree(wr);
2383 wr = next;
2384 }
2385
2386 return ret;
2387}
2388
2389static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs)
2390{
2391 struct ib_uverbs_create_ah cmd;
2392 struct ib_uverbs_create_ah_resp resp;
2393 struct ib_uobject *uobj;
2394 struct ib_pd *pd;
2395 struct ib_ah *ah;
2396 struct rdma_ah_attr attr = {};
2397 int ret;
2398 struct ib_device *ib_dev;
2399
2400 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2401 if (ret)
2402 return ret;
2403
2404 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev);
2405 if (IS_ERR(uobj))
2406 return PTR_ERR(uobj);
2407
2408 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) {
2409 ret = -EINVAL;
2410 goto err;
2411 }
2412
2413 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2414 if (!pd) {
2415 ret = -EINVAL;
2416 goto err;
2417 }
2418
2419 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2420 rdma_ah_set_make_grd(&attr, false);
2421 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2422 rdma_ah_set_sl(&attr, cmd.attr.sl);
2423 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2424 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2425 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2426
2427 if (cmd.attr.is_global) {
2428 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2429 cmd.attr.grh.sgid_index,
2430 cmd.attr.grh.hop_limit,
2431 cmd.attr.grh.traffic_class);
2432 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2433 } else {
2434 rdma_ah_set_ah_flags(&attr, 0);
2435 }
2436
2437 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata);
2438 if (IS_ERR(ah)) {
2439 ret = PTR_ERR(ah);
2440 goto err_put;
2441 }
2442
2443 ah->uobject = uobj;
2444 uobj->user_handle = cmd.user_handle;
2445 uobj->object = ah;
2446 uobj_put_obj_read(pd);
2447 uobj_finalize_uobj_create(uobj, attrs);
2448
2449 resp.ah_handle = uobj->id;
2450 return uverbs_response(attrs, &resp, sizeof(resp));
2451
2452err_put:
2453 uobj_put_obj_read(pd);
2454err:
2455 uobj_alloc_abort(uobj, attrs);
2456 return ret;
2457}
2458
2459static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs)
2460{
2461 struct ib_uverbs_destroy_ah cmd;
2462 int ret;
2463
2464 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2465 if (ret)
2466 return ret;
2467
2468 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs);
2469}
2470
2471static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs)
2472{
2473 struct ib_uverbs_attach_mcast cmd;
2474 struct ib_qp *qp;
2475 struct ib_uqp_object *obj;
2476 struct ib_uverbs_mcast_entry *mcast;
2477 int ret;
2478
2479 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2480 if (ret)
2481 return ret;
2482
2483 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2484 if (!qp)
2485 return -EINVAL;
2486
2487 obj = qp->uobject;
2488
2489 mutex_lock(&obj->mcast_lock);
2490 list_for_each_entry(mcast, &obj->mcast_list, list)
2491 if (cmd.mlid == mcast->lid &&
2492 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2493 ret = 0;
2494 goto out_put;
2495 }
2496
2497 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2498 if (!mcast) {
2499 ret = -ENOMEM;
2500 goto out_put;
2501 }
2502
2503 mcast->lid = cmd.mlid;
2504 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2505
2506 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2507 if (!ret)
2508 list_add_tail(&mcast->list, &obj->mcast_list);
2509 else
2510 kfree(mcast);
2511
2512out_put:
2513 mutex_unlock(&obj->mcast_lock);
2514 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2515 UVERBS_LOOKUP_READ);
2516
2517 return ret;
2518}
2519
2520static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs)
2521{
2522 struct ib_uverbs_detach_mcast cmd;
2523 struct ib_uqp_object *obj;
2524 struct ib_qp *qp;
2525 struct ib_uverbs_mcast_entry *mcast;
2526 int ret;
2527 bool found = false;
2528
2529 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2530 if (ret)
2531 return ret;
2532
2533 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2534 if (!qp)
2535 return -EINVAL;
2536
2537 obj = qp->uobject;
2538 mutex_lock(&obj->mcast_lock);
2539
2540 list_for_each_entry(mcast, &obj->mcast_list, list)
2541 if (cmd.mlid == mcast->lid &&
2542 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2543 list_del(&mcast->list);
2544 kfree(mcast);
2545 found = true;
2546 break;
2547 }
2548
2549 if (!found) {
2550 ret = -EINVAL;
2551 goto out_put;
2552 }
2553
2554 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2555
2556out_put:
2557 mutex_unlock(&obj->mcast_lock);
2558 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2559 UVERBS_LOOKUP_READ);
2560 return ret;
2561}
2562
2563struct ib_uflow_resources *flow_resources_alloc(size_t num_specs)
2564{
2565 struct ib_uflow_resources *resources;
2566
2567 resources = kzalloc(sizeof(*resources), GFP_KERNEL);
2568
2569 if (!resources)
2570 return NULL;
2571
2572 if (!num_specs)
2573 goto out;
2574
2575 resources->counters =
2576 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
2577 resources->collection =
2578 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL);
2579
2580 if (!resources->counters || !resources->collection)
2581 goto err;
2582
2583out:
2584 resources->max = num_specs;
2585 return resources;
2586
2587err:
2588 kfree(resources->counters);
2589 kfree(resources);
2590
2591 return NULL;
2592}
2593EXPORT_SYMBOL(flow_resources_alloc);
2594
2595void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
2596{
2597 unsigned int i;
2598
2599 if (!uflow_res)
2600 return;
2601
2602 for (i = 0; i < uflow_res->collection_num; i++)
2603 atomic_dec(&uflow_res->collection[i]->usecnt);
2604
2605 for (i = 0; i < uflow_res->counters_num; i++)
2606 atomic_dec(&uflow_res->counters[i]->usecnt);
2607
2608 kfree(uflow_res->collection);
2609 kfree(uflow_res->counters);
2610 kfree(uflow_res);
2611}
2612EXPORT_SYMBOL(ib_uverbs_flow_resources_free);
2613
2614void flow_resources_add(struct ib_uflow_resources *uflow_res,
2615 enum ib_flow_spec_type type,
2616 void *ibobj)
2617{
2618 WARN_ON(uflow_res->num >= uflow_res->max);
2619
2620 switch (type) {
2621 case IB_FLOW_SPEC_ACTION_HANDLE:
2622 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt);
2623 uflow_res->collection[uflow_res->collection_num++] =
2624 (struct ib_flow_action *)ibobj;
2625 break;
2626 case IB_FLOW_SPEC_ACTION_COUNT:
2627 atomic_inc(&((struct ib_counters *)ibobj)->usecnt);
2628 uflow_res->counters[uflow_res->counters_num++] =
2629 (struct ib_counters *)ibobj;
2630 break;
2631 default:
2632 WARN_ON(1);
2633 }
2634
2635 uflow_res->num++;
2636}
2637EXPORT_SYMBOL(flow_resources_add);
2638
2639static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
2640 struct ib_uverbs_flow_spec *kern_spec,
2641 union ib_flow_spec *ib_spec,
2642 struct ib_uflow_resources *uflow_res)
2643{
2644 ib_spec->type = kern_spec->type;
2645 switch (ib_spec->type) {
2646 case IB_FLOW_SPEC_ACTION_TAG:
2647 if (kern_spec->flow_tag.size !=
2648 sizeof(struct ib_uverbs_flow_spec_action_tag))
2649 return -EINVAL;
2650
2651 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2652 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2653 break;
2654 case IB_FLOW_SPEC_ACTION_DROP:
2655 if (kern_spec->drop.size !=
2656 sizeof(struct ib_uverbs_flow_spec_action_drop))
2657 return -EINVAL;
2658
2659 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2660 break;
2661 case IB_FLOW_SPEC_ACTION_HANDLE:
2662 if (kern_spec->action.size !=
2663 sizeof(struct ib_uverbs_flow_spec_action_handle))
2664 return -EOPNOTSUPP;
2665 ib_spec->action.act = uobj_get_obj_read(flow_action,
2666 UVERBS_OBJECT_FLOW_ACTION,
2667 kern_spec->action.handle,
2668 attrs);
2669 if (!ib_spec->action.act)
2670 return -EINVAL;
2671 ib_spec->action.size =
2672 sizeof(struct ib_flow_spec_action_handle);
2673 flow_resources_add(uflow_res,
2674 IB_FLOW_SPEC_ACTION_HANDLE,
2675 ib_spec->action.act);
2676 uobj_put_obj_read(ib_spec->action.act);
2677 break;
2678 case IB_FLOW_SPEC_ACTION_COUNT:
2679 if (kern_spec->flow_count.size !=
2680 sizeof(struct ib_uverbs_flow_spec_action_count))
2681 return -EINVAL;
2682 ib_spec->flow_count.counters =
2683 uobj_get_obj_read(counters,
2684 UVERBS_OBJECT_COUNTERS,
2685 kern_spec->flow_count.handle,
2686 attrs);
2687 if (!ib_spec->flow_count.counters)
2688 return -EINVAL;
2689 ib_spec->flow_count.size =
2690 sizeof(struct ib_flow_spec_action_count);
2691 flow_resources_add(uflow_res,
2692 IB_FLOW_SPEC_ACTION_COUNT,
2693 ib_spec->flow_count.counters);
2694 uobj_put_obj_read(ib_spec->flow_count.counters);
2695 break;
2696 default:
2697 return -EINVAL;
2698 }
2699 return 0;
2700}
2701
2702static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
2703 u16 ib_real_filter_sz)
2704{
2705 /*
2706 * User space filter structures must be 64 bit aligned, otherwise this
2707 * may pass, but we won't handle additional new attributes.
2708 */
2709
2710 if (kern_filter_size > ib_real_filter_sz) {
2711 if (memchr_inv(kern_spec_filter +
2712 ib_real_filter_sz, 0,
2713 kern_filter_size - ib_real_filter_sz))
2714 return -EINVAL;
2715 return ib_real_filter_sz;
2716 }
2717 return kern_filter_size;
2718}
2719
2720int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
2721 const void *kern_spec_mask,
2722 const void *kern_spec_val,
2723 size_t kern_filter_sz,
2724 union ib_flow_spec *ib_spec)
2725{
2726 ssize_t actual_filter_sz;
2727 ssize_t ib_filter_sz;
2728
2729 /* User flow spec size must be aligned to 4 bytes */
2730 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2731 return -EINVAL;
2732
2733 ib_spec->type = type;
2734
2735 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2736 return -EINVAL;
2737
2738 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2739 case IB_FLOW_SPEC_ETH:
2740 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2741 actual_filter_sz = spec_filter_size(kern_spec_mask,
2742 kern_filter_sz,
2743 ib_filter_sz);
2744 if (actual_filter_sz <= 0)
2745 return -EINVAL;
2746 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2747 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2748 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2749 break;
2750 case IB_FLOW_SPEC_IPV4:
2751 ib_filter_sz = offsetof(struct ib_flow_ipv4_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_ipv4);
2758 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2759 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2760 break;
2761 case IB_FLOW_SPEC_IPV6:
2762 ib_filter_sz = offsetof(struct ib_flow_ipv6_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_ipv6);
2769 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2770 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2771
2772 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2773 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2774 return -EINVAL;
2775 break;
2776 case IB_FLOW_SPEC_TCP:
2777 case IB_FLOW_SPEC_UDP:
2778 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
2779 actual_filter_sz = spec_filter_size(kern_spec_mask,
2780 kern_filter_sz,
2781 ib_filter_sz);
2782 if (actual_filter_sz <= 0)
2783 return -EINVAL;
2784 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2785 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2786 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2787 break;
2788 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2789 ib_filter_sz = offsetof(struct ib_flow_tunnel_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->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2796 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2797 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2798
2799 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2800 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2801 return -EINVAL;
2802 break;
2803 case IB_FLOW_SPEC_ESP:
2804 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz);
2805 actual_filter_sz = spec_filter_size(kern_spec_mask,
2806 kern_filter_sz,
2807 ib_filter_sz);
2808 if (actual_filter_sz <= 0)
2809 return -EINVAL;
2810 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp);
2811 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz);
2812 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz);
2813 break;
2814 case IB_FLOW_SPEC_GRE:
2815 ib_filter_sz = offsetof(struct ib_flow_gre_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->gre.size = sizeof(struct ib_flow_spec_gre);
2822 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz);
2823 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz);
2824 break;
2825 case IB_FLOW_SPEC_MPLS:
2826 ib_filter_sz = offsetof(struct ib_flow_mpls_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->mpls.size = sizeof(struct ib_flow_spec_mpls);
2833 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz);
2834 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz);
2835 break;
2836 default:
2837 return -EINVAL;
2838 }
2839 return 0;
2840}
2841
2842static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2843 union ib_flow_spec *ib_spec)
2844{
2845 size_t kern_filter_sz;
2846 void *kern_spec_mask;
2847 void *kern_spec_val;
2848
2849 if (check_sub_overflow((size_t)kern_spec->hdr.size,
2850 sizeof(struct ib_uverbs_flow_spec_hdr),
2851 &kern_filter_sz))
2852 return -EINVAL;
2853
2854 kern_filter_sz /= 2;
2855
2856 kern_spec_val = (void *)kern_spec +
2857 sizeof(struct ib_uverbs_flow_spec_hdr);
2858 kern_spec_mask = kern_spec_val + kern_filter_sz;
2859
2860 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
2861 kern_spec_mask,
2862 kern_spec_val,
2863 kern_filter_sz, ib_spec);
2864}
2865
2866static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs,
2867 struct ib_uverbs_flow_spec *kern_spec,
2868 union ib_flow_spec *ib_spec,
2869 struct ib_uflow_resources *uflow_res)
2870{
2871 if (kern_spec->reserved)
2872 return -EINVAL;
2873
2874 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2875 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec,
2876 uflow_res);
2877 else
2878 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2879}
2880
2881static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs)
2882{
2883 struct ib_uverbs_ex_create_wq cmd;
2884 struct ib_uverbs_ex_create_wq_resp resp = {};
2885 struct ib_uwq_object *obj;
2886 int err = 0;
2887 struct ib_cq *cq;
2888 struct ib_pd *pd;
2889 struct ib_wq *wq;
2890 struct ib_wq_init_attr wq_init_attr = {};
2891 struct ib_device *ib_dev;
2892
2893 err = uverbs_request(attrs, &cmd, sizeof(cmd));
2894 if (err)
2895 return err;
2896
2897 if (cmd.comp_mask)
2898 return -EOPNOTSUPP;
2899
2900 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs,
2901 &ib_dev);
2902 if (IS_ERR(obj))
2903 return PTR_ERR(obj);
2904
2905 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2906 if (!pd) {
2907 err = -EINVAL;
2908 goto err_uobj;
2909 }
2910
2911 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
2912 if (!cq) {
2913 err = -EINVAL;
2914 goto err_put_pd;
2915 }
2916
2917 wq_init_attr.cq = cq;
2918 wq_init_attr.max_sge = cmd.max_sge;
2919 wq_init_attr.max_wr = cmd.max_wr;
2920 wq_init_attr.wq_type = cmd.wq_type;
2921 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2922 wq_init_attr.create_flags = cmd.create_flags;
2923 INIT_LIST_HEAD(&obj->uevent.event_list);
2924 obj->uevent.uobject.user_handle = cmd.user_handle;
2925
2926 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata);
2927 if (IS_ERR(wq)) {
2928 err = PTR_ERR(wq);
2929 goto err_put_cq;
2930 }
2931
2932 wq->uobject = obj;
2933 obj->uevent.uobject.object = wq;
2934 wq->wq_type = wq_init_attr.wq_type;
2935 wq->cq = cq;
2936 wq->pd = pd;
2937 wq->device = pd->device;
2938 atomic_set(&wq->usecnt, 0);
2939 atomic_inc(&pd->usecnt);
2940 atomic_inc(&cq->usecnt);
2941 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
2942 if (obj->uevent.event_file)
2943 uverbs_uobject_get(&obj->uevent.event_file->uobj);
2944
2945 uobj_put_obj_read(pd);
2946 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2947 UVERBS_LOOKUP_READ);
2948 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
2949
2950 resp.wq_handle = obj->uevent.uobject.id;
2951 resp.max_sge = wq_init_attr.max_sge;
2952 resp.max_wr = wq_init_attr.max_wr;
2953 resp.wqn = wq->wq_num;
2954 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2955 return uverbs_response(attrs, &resp, sizeof(resp));
2956
2957err_put_cq:
2958 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2959 UVERBS_LOOKUP_READ);
2960err_put_pd:
2961 uobj_put_obj_read(pd);
2962err_uobj:
2963 uobj_alloc_abort(&obj->uevent.uobject, attrs);
2964
2965 return err;
2966}
2967
2968static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs)
2969{
2970 struct ib_uverbs_ex_destroy_wq cmd;
2971 struct ib_uverbs_ex_destroy_wq_resp resp = {};
2972 struct ib_uobject *uobj;
2973 struct ib_uwq_object *obj;
2974 int ret;
2975
2976 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2977 if (ret)
2978 return ret;
2979
2980 if (cmd.comp_mask)
2981 return -EOPNOTSUPP;
2982
2983 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2984 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
2985 if (IS_ERR(uobj))
2986 return PTR_ERR(uobj);
2987
2988 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
2989 resp.events_reported = obj->uevent.events_reported;
2990
2991 uobj_put_destroy(uobj);
2992
2993 return uverbs_response(attrs, &resp, sizeof(resp));
2994}
2995
2996static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs)
2997{
2998 struct ib_uverbs_ex_modify_wq cmd;
2999 struct ib_wq *wq;
3000 struct ib_wq_attr wq_attr = {};
3001 int ret;
3002
3003 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3004 if (ret)
3005 return ret;
3006
3007 if (!cmd.attr_mask)
3008 return -EINVAL;
3009
3010 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3011 return -EINVAL;
3012
3013 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3014 if (!wq)
3015 return -EINVAL;
3016
3017 if (cmd.attr_mask & IB_WQ_FLAGS) {
3018 wq_attr.flags = cmd.flags;
3019 wq_attr.flags_mask = cmd.flags_mask;
3020 }
3021
3022 if (cmd.attr_mask & IB_WQ_CUR_STATE) {
3023 if (cmd.curr_wq_state > IB_WQS_ERR)
3024 return -EINVAL;
3025
3026 wq_attr.curr_wq_state = cmd.curr_wq_state;
3027 } else {
3028 wq_attr.curr_wq_state = wq->state;
3029 }
3030
3031 if (cmd.attr_mask & IB_WQ_STATE) {
3032 if (cmd.wq_state > IB_WQS_ERR)
3033 return -EINVAL;
3034
3035 wq_attr.wq_state = cmd.wq_state;
3036 } else {
3037 wq_attr.wq_state = wq_attr.curr_wq_state;
3038 }
3039
3040 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask,
3041 &attrs->driver_udata);
3042 rdma_lookup_put_uobject(&wq->uobject->uevent.uobject,
3043 UVERBS_LOOKUP_READ);
3044 return ret;
3045}
3046
3047static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3048{
3049 struct ib_uverbs_ex_create_rwq_ind_table cmd;
3050 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3051 struct ib_uobject *uobj;
3052 int err;
3053 struct ib_rwq_ind_table_init_attr init_attr = {};
3054 struct ib_rwq_ind_table *rwq_ind_tbl;
3055 struct ib_wq **wqs = NULL;
3056 u32 *wqs_handles = NULL;
3057 struct ib_wq *wq = NULL;
3058 int i, num_read_wqs;
3059 u32 num_wq_handles;
3060 struct uverbs_req_iter iter;
3061 struct ib_device *ib_dev;
3062
3063 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3064 if (err)
3065 return err;
3066
3067 if (cmd.comp_mask)
3068 return -EOPNOTSUPP;
3069
3070 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3071 return -EINVAL;
3072
3073 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3074 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3075 GFP_KERNEL);
3076 if (!wqs_handles)
3077 return -ENOMEM;
3078
3079 err = uverbs_request_next(&iter, wqs_handles,
3080 num_wq_handles * sizeof(__u32));
3081 if (err)
3082 goto err_free;
3083
3084 err = uverbs_request_finish(&iter);
3085 if (err)
3086 goto err_free;
3087
3088 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3089 if (!wqs) {
3090 err = -ENOMEM;
3091 goto err_free;
3092 }
3093
3094 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3095 num_read_wqs++) {
3096 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ,
3097 wqs_handles[num_read_wqs], attrs);
3098 if (!wq) {
3099 err = -EINVAL;
3100 goto put_wqs;
3101 }
3102
3103 wqs[num_read_wqs] = wq;
3104 atomic_inc(&wqs[num_read_wqs]->usecnt);
3105 }
3106
3107 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev);
3108 if (IS_ERR(uobj)) {
3109 err = PTR_ERR(uobj);
3110 goto put_wqs;
3111 }
3112
3113 rwq_ind_tbl = rdma_zalloc_drv_obj(ib_dev, ib_rwq_ind_table);
3114 if (!rwq_ind_tbl) {
3115 err = -ENOMEM;
3116 goto err_uobj;
3117 }
3118
3119 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3120 init_attr.ind_tbl = wqs;
3121
3122 rwq_ind_tbl->ind_tbl = wqs;
3123 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3124 rwq_ind_tbl->uobject = uobj;
3125 uobj->object = rwq_ind_tbl;
3126 rwq_ind_tbl->device = ib_dev;
3127 atomic_set(&rwq_ind_tbl->usecnt, 0);
3128
3129 err = ib_dev->ops.create_rwq_ind_table(rwq_ind_tbl, &init_attr,
3130 &attrs->driver_udata);
3131 if (err)
3132 goto err_create;
3133
3134 for (i = 0; i < num_wq_handles; i++)
3135 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3136 UVERBS_LOOKUP_READ);
3137 kfree(wqs_handles);
3138 uobj_finalize_uobj_create(uobj, attrs);
3139
3140 resp.ind_tbl_handle = uobj->id;
3141 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3142 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3143 return uverbs_response(attrs, &resp, sizeof(resp));
3144
3145err_create:
3146 kfree(rwq_ind_tbl);
3147err_uobj:
3148 uobj_alloc_abort(uobj, attrs);
3149put_wqs:
3150 for (i = 0; i < num_read_wqs; i++) {
3151 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3152 UVERBS_LOOKUP_READ);
3153 atomic_dec(&wqs[i]->usecnt);
3154 }
3155err_free:
3156 kfree(wqs_handles);
3157 kfree(wqs);
3158 return err;
3159}
3160
3161static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3162{
3163 struct ib_uverbs_ex_destroy_rwq_ind_table cmd;
3164 int ret;
3165
3166 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3167 if (ret)
3168 return ret;
3169
3170 if (cmd.comp_mask)
3171 return -EOPNOTSUPP;
3172
3173 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL,
3174 cmd.ind_tbl_handle, attrs);
3175}
3176
3177static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs)
3178{
3179 struct ib_uverbs_create_flow cmd;
3180 struct ib_uverbs_create_flow_resp resp = {};
3181 struct ib_uobject *uobj;
3182 struct ib_flow *flow_id;
3183 struct ib_uverbs_flow_attr *kern_flow_attr;
3184 struct ib_flow_attr *flow_attr;
3185 struct ib_qp *qp;
3186 struct ib_uflow_resources *uflow_res;
3187 struct ib_uverbs_flow_spec_hdr *kern_spec;
3188 struct uverbs_req_iter iter;
3189 int err;
3190 void *ib_spec;
3191 int i;
3192 struct ib_device *ib_dev;
3193
3194 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3195 if (err)
3196 return err;
3197
3198 if (cmd.comp_mask)
3199 return -EINVAL;
3200
3201 if (!capable(CAP_NET_RAW))
3202 return -EPERM;
3203
3204 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3205 return -EINVAL;
3206
3207 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3208 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3209 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3210 return -EINVAL;
3211
3212 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3213 return -EINVAL;
3214
3215 if (cmd.flow_attr.size >
3216 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3217 return -EINVAL;
3218
3219 if (cmd.flow_attr.reserved[0] ||
3220 cmd.flow_attr.reserved[1])
3221 return -EINVAL;
3222
3223 if (cmd.flow_attr.num_of_specs) {
3224 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3225 GFP_KERNEL);
3226 if (!kern_flow_attr)
3227 return -ENOMEM;
3228
3229 *kern_flow_attr = cmd.flow_attr;
3230 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs,
3231 cmd.flow_attr.size);
3232 if (err)
3233 goto err_free_attr;
3234 } else {
3235 kern_flow_attr = &cmd.flow_attr;
3236 }
3237
3238 err = uverbs_request_finish(&iter);
3239 if (err)
3240 goto err_free_attr;
3241
3242 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev);
3243 if (IS_ERR(uobj)) {
3244 err = PTR_ERR(uobj);
3245 goto err_free_attr;
3246 }
3247
3248 if (!rdma_is_port_valid(uobj->context->device, cmd.flow_attr.port)) {
3249 err = -EINVAL;
3250 goto err_uobj;
3251 }
3252
3253 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
3254 if (!qp) {
3255 err = -EINVAL;
3256 goto err_uobj;
3257 }
3258
3259 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) {
3260 err = -EINVAL;
3261 goto err_put;
3262 }
3263
3264 flow_attr = kzalloc(struct_size(flow_attr, flows,
3265 cmd.flow_attr.num_of_specs), GFP_KERNEL);
3266 if (!flow_attr) {
3267 err = -ENOMEM;
3268 goto err_put;
3269 }
3270 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs);
3271 if (!uflow_res) {
3272 err = -ENOMEM;
3273 goto err_free_flow_attr;
3274 }
3275
3276 flow_attr->type = kern_flow_attr->type;
3277 flow_attr->priority = kern_flow_attr->priority;
3278 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3279 flow_attr->port = kern_flow_attr->port;
3280 flow_attr->flags = kern_flow_attr->flags;
3281 flow_attr->size = sizeof(*flow_attr);
3282
3283 kern_spec = kern_flow_attr->flow_specs;
3284 ib_spec = flow_attr + 1;
3285 for (i = 0; i < flow_attr->num_of_specs &&
3286 cmd.flow_attr.size >= sizeof(*kern_spec) &&
3287 cmd.flow_attr.size >= kern_spec->size;
3288 i++) {
3289 err = kern_spec_to_ib_spec(
3290 attrs, (struct ib_uverbs_flow_spec *)kern_spec,
3291 ib_spec, uflow_res);
3292 if (err)
3293 goto err_free;
3294
3295 flow_attr->size +=
3296 ((union ib_flow_spec *) ib_spec)->size;
3297 cmd.flow_attr.size -= kern_spec->size;
3298 kern_spec = ((void *)kern_spec) + kern_spec->size;
3299 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3300 }
3301 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3302 pr_warn("create flow failed, flow %d: %u bytes left from uverb cmd\n",
3303 i, cmd.flow_attr.size);
3304 err = -EINVAL;
3305 goto err_free;
3306 }
3307
3308 flow_id = qp->device->ops.create_flow(qp, flow_attr,
3309 &attrs->driver_udata);
3310
3311 if (IS_ERR(flow_id)) {
3312 err = PTR_ERR(flow_id);
3313 goto err_free;
3314 }
3315
3316 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res);
3317
3318 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3319 UVERBS_LOOKUP_READ);
3320 kfree(flow_attr);
3321
3322 if (cmd.flow_attr.num_of_specs)
3323 kfree(kern_flow_attr);
3324 uobj_finalize_uobj_create(uobj, attrs);
3325
3326 resp.flow_handle = uobj->id;
3327 return uverbs_response(attrs, &resp, sizeof(resp));
3328
3329err_free:
3330 ib_uverbs_flow_resources_free(uflow_res);
3331err_free_flow_attr:
3332 kfree(flow_attr);
3333err_put:
3334 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3335 UVERBS_LOOKUP_READ);
3336err_uobj:
3337 uobj_alloc_abort(uobj, attrs);
3338err_free_attr:
3339 if (cmd.flow_attr.num_of_specs)
3340 kfree(kern_flow_attr);
3341 return err;
3342}
3343
3344static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs)
3345{
3346 struct ib_uverbs_destroy_flow cmd;
3347 int ret;
3348
3349 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3350 if (ret)
3351 return ret;
3352
3353 if (cmd.comp_mask)
3354 return -EINVAL;
3355
3356 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs);
3357}
3358
3359static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs,
3360 struct ib_uverbs_create_xsrq *cmd,
3361 struct ib_udata *udata)
3362{
3363 struct ib_uverbs_create_srq_resp resp = {};
3364 struct ib_usrq_object *obj;
3365 struct ib_pd *pd;
3366 struct ib_srq *srq;
3367 struct ib_srq_init_attr attr;
3368 int ret;
3369 struct ib_uobject *xrcd_uobj;
3370 struct ib_device *ib_dev;
3371
3372 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs,
3373 &ib_dev);
3374 if (IS_ERR(obj))
3375 return PTR_ERR(obj);
3376
3377 if (cmd->srq_type == IB_SRQT_TM)
3378 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
3379
3380 if (cmd->srq_type == IB_SRQT_XRC) {
3381 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle,
3382 attrs);
3383 if (IS_ERR(xrcd_uobj)) {
3384 ret = -EINVAL;
3385 goto err;
3386 }
3387
3388 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3389 if (!attr.ext.xrc.xrcd) {
3390 ret = -EINVAL;
3391 goto err_put_xrcd;
3392 }
3393
3394 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3395 atomic_inc(&obj->uxrcd->refcnt);
3396 }
3397
3398 if (ib_srq_has_cq(cmd->srq_type)) {
3399 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
3400 cmd->cq_handle, attrs);
3401 if (!attr.ext.cq) {
3402 ret = -EINVAL;
3403 goto err_put_xrcd;
3404 }
3405 }
3406
3407 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs);
3408 if (!pd) {
3409 ret = -EINVAL;
3410 goto err_put_cq;
3411 }
3412
3413 attr.event_handler = ib_uverbs_srq_event_handler;
3414 attr.srq_type = cmd->srq_type;
3415 attr.attr.max_wr = cmd->max_wr;
3416 attr.attr.max_sge = cmd->max_sge;
3417 attr.attr.srq_limit = cmd->srq_limit;
3418
3419 INIT_LIST_HEAD(&obj->uevent.event_list);
3420 obj->uevent.uobject.user_handle = cmd->user_handle;
3421
3422 srq = ib_create_srq_user(pd, &attr, obj, udata);
3423 if (IS_ERR(srq)) {
3424 ret = PTR_ERR(srq);
3425 goto err_put_pd;
3426 }
3427
3428 obj->uevent.uobject.object = srq;
3429 obj->uevent.uobject.user_handle = cmd->user_handle;
3430 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
3431 if (obj->uevent.event_file)
3432 uverbs_uobject_get(&obj->uevent.event_file->uobj);
3433
3434 if (cmd->srq_type == IB_SRQT_XRC)
3435 resp.srqn = srq->ext.xrc.srq_num;
3436
3437 if (cmd->srq_type == IB_SRQT_XRC)
3438 uobj_put_read(xrcd_uobj);
3439
3440 if (ib_srq_has_cq(cmd->srq_type))
3441 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3442 UVERBS_LOOKUP_READ);
3443
3444 uobj_put_obj_read(pd);
3445 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
3446
3447 resp.srq_handle = obj->uevent.uobject.id;
3448 resp.max_wr = attr.attr.max_wr;
3449 resp.max_sge = attr.attr.max_sge;
3450 return uverbs_response(attrs, &resp, sizeof(resp));
3451
3452err_put_pd:
3453 uobj_put_obj_read(pd);
3454err_put_cq:
3455 if (ib_srq_has_cq(cmd->srq_type))
3456 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3457 UVERBS_LOOKUP_READ);
3458
3459err_put_xrcd:
3460 if (cmd->srq_type == IB_SRQT_XRC) {
3461 atomic_dec(&obj->uxrcd->refcnt);
3462 uobj_put_read(xrcd_uobj);
3463 }
3464
3465err:
3466 uobj_alloc_abort(&obj->uevent.uobject, attrs);
3467 return ret;
3468}
3469
3470static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs)
3471{
3472 struct ib_uverbs_create_srq cmd;
3473 struct ib_uverbs_create_xsrq xcmd;
3474 int ret;
3475
3476 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3477 if (ret)
3478 return ret;
3479
3480 memset(&xcmd, 0, sizeof(xcmd));
3481 xcmd.response = cmd.response;
3482 xcmd.user_handle = cmd.user_handle;
3483 xcmd.srq_type = IB_SRQT_BASIC;
3484 xcmd.pd_handle = cmd.pd_handle;
3485 xcmd.max_wr = cmd.max_wr;
3486 xcmd.max_sge = cmd.max_sge;
3487 xcmd.srq_limit = cmd.srq_limit;
3488
3489 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata);
3490}
3491
3492static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs)
3493{
3494 struct ib_uverbs_create_xsrq cmd;
3495 int ret;
3496
3497 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3498 if (ret)
3499 return ret;
3500
3501 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata);
3502}
3503
3504static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs)
3505{
3506 struct ib_uverbs_modify_srq cmd;
3507 struct ib_srq *srq;
3508 struct ib_srq_attr attr;
3509 int ret;
3510
3511 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3512 if (ret)
3513 return ret;
3514
3515 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3516 if (!srq)
3517 return -EINVAL;
3518
3519 attr.max_wr = cmd.max_wr;
3520 attr.srq_limit = cmd.srq_limit;
3521
3522 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask,
3523 &attrs->driver_udata);
3524
3525 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3526 UVERBS_LOOKUP_READ);
3527
3528 return ret;
3529}
3530
3531static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs)
3532{
3533 struct ib_uverbs_query_srq cmd;
3534 struct ib_uverbs_query_srq_resp resp;
3535 struct ib_srq_attr attr;
3536 struct ib_srq *srq;
3537 int ret;
3538
3539 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3540 if (ret)
3541 return ret;
3542
3543 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3544 if (!srq)
3545 return -EINVAL;
3546
3547 ret = ib_query_srq(srq, &attr);
3548
3549 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3550 UVERBS_LOOKUP_READ);
3551
3552 if (ret)
3553 return ret;
3554
3555 memset(&resp, 0, sizeof resp);
3556
3557 resp.max_wr = attr.max_wr;
3558 resp.max_sge = attr.max_sge;
3559 resp.srq_limit = attr.srq_limit;
3560
3561 return uverbs_response(attrs, &resp, sizeof(resp));
3562}
3563
3564static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs)
3565{
3566 struct ib_uverbs_destroy_srq cmd;
3567 struct ib_uverbs_destroy_srq_resp resp;
3568 struct ib_uobject *uobj;
3569 struct ib_uevent_object *obj;
3570 int ret;
3571
3572 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3573 if (ret)
3574 return ret;
3575
3576 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3577 if (IS_ERR(uobj))
3578 return PTR_ERR(uobj);
3579
3580 obj = container_of(uobj, struct ib_uevent_object, uobject);
3581 memset(&resp, 0, sizeof(resp));
3582 resp.events_reported = obj->events_reported;
3583
3584 uobj_put_destroy(uobj);
3585
3586 return uverbs_response(attrs, &resp, sizeof(resp));
3587}
3588
3589static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs)
3590{
3591 struct ib_uverbs_ex_query_device_resp resp = {};
3592 struct ib_uverbs_ex_query_device cmd;
3593 struct ib_device_attr attr = {0};
3594 struct ib_ucontext *ucontext;
3595 struct ib_device *ib_dev;
3596 int err;
3597
3598 ucontext = ib_uverbs_get_ucontext(attrs);
3599 if (IS_ERR(ucontext))
3600 return PTR_ERR(ucontext);
3601 ib_dev = ucontext->device;
3602
3603 err = uverbs_request(attrs, &cmd, sizeof(cmd));
3604 if (err)
3605 return err;
3606
3607 if (cmd.comp_mask)
3608 return -EINVAL;
3609
3610 if (cmd.reserved)
3611 return -EINVAL;
3612
3613 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata);
3614 if (err)
3615 return err;
3616
3617 copy_query_dev_fields(ucontext, &resp.base, &attr);
3618
3619 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3620 resp.odp_caps.per_transport_caps.rc_odp_caps =
3621 attr.odp_caps.per_transport_caps.rc_odp_caps;
3622 resp.odp_caps.per_transport_caps.uc_odp_caps =
3623 attr.odp_caps.per_transport_caps.uc_odp_caps;
3624 resp.odp_caps.per_transport_caps.ud_odp_caps =
3625 attr.odp_caps.per_transport_caps.ud_odp_caps;
3626 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps;
3627
3628 resp.timestamp_mask = attr.timestamp_mask;
3629 resp.hca_core_clock = attr.hca_core_clock;
3630 resp.device_cap_flags_ex = attr.device_cap_flags;
3631 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3632 resp.rss_caps.max_rwq_indirection_tables =
3633 attr.rss_caps.max_rwq_indirection_tables;
3634 resp.rss_caps.max_rwq_indirection_table_size =
3635 attr.rss_caps.max_rwq_indirection_table_size;
3636 resp.max_wq_type_rq = attr.max_wq_type_rq;
3637 resp.raw_packet_caps = attr.raw_packet_caps;
3638 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size;
3639 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags;
3640 resp.tm_caps.max_ops = attr.tm_caps.max_ops;
3641 resp.tm_caps.max_sge = attr.tm_caps.max_sge;
3642 resp.tm_caps.flags = attr.tm_caps.flags;
3643 resp.cq_moderation_caps.max_cq_moderation_count =
3644 attr.cq_caps.max_cq_moderation_count;
3645 resp.cq_moderation_caps.max_cq_moderation_period =
3646 attr.cq_caps.max_cq_moderation_period;
3647 resp.max_dm_size = attr.max_dm_size;
3648 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3649
3650 return uverbs_response(attrs, &resp, sizeof(resp));
3651}
3652
3653static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs)
3654{
3655 struct ib_uverbs_ex_modify_cq cmd;
3656 struct ib_cq *cq;
3657 int ret;
3658
3659 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3660 if (ret)
3661 return ret;
3662
3663 if (!cmd.attr_mask || cmd.reserved)
3664 return -EINVAL;
3665
3666 if (cmd.attr_mask > IB_CQ_MODERATE)
3667 return -EOPNOTSUPP;
3668
3669 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
3670 if (!cq)
3671 return -EINVAL;
3672
3673 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period);
3674
3675 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
3676 UVERBS_LOOKUP_READ);
3677 return ret;
3678}
3679
3680/*
3681 * Describe the input structs for write(). Some write methods have an input
3682 * only struct, most have an input and output. If the struct has an output then
3683 * the 'response' u64 must be the first field in the request structure.
3684 *
3685 * If udata is present then both the request and response structs have a
3686 * trailing driver_data flex array. In this case the size of the base struct
3687 * cannot be changed.
3688 */
3689#define UAPI_DEF_WRITE_IO(req, resp) \
3690 .write.has_resp = 1 + \
3691 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \
3692 BUILD_BUG_ON_ZERO(sizeof_field(req, response) != \
3693 sizeof(u64)), \
3694 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp)
3695
3696#define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req)
3697
3698#define UAPI_DEF_WRITE_UDATA_IO(req, resp) \
3699 UAPI_DEF_WRITE_IO(req, resp), \
3700 .write.has_udata = \
3701 1 + \
3702 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3703 sizeof(req)) + \
3704 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \
3705 sizeof(resp))
3706
3707#define UAPI_DEF_WRITE_UDATA_I(req) \
3708 UAPI_DEF_WRITE_I(req), \
3709 .write.has_udata = \
3710 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3711 sizeof(req))
3712
3713/*
3714 * The _EX versions are for use with WRITE_EX and allow the last struct member
3715 * to be specified. Buffers that do not include that member will be rejected.
3716 */
3717#define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \
3718 .write.has_resp = 1, \
3719 .write.req_size = offsetofend(req, req_last_member), \
3720 .write.resp_size = offsetofend(resp, resp_last_member)
3721
3722#define UAPI_DEF_WRITE_I_EX(req, req_last_member) \
3723 .write.req_size = offsetofend(req, req_last_member)
3724
3725const struct uapi_definition uverbs_def_write_intf[] = {
3726 DECLARE_UVERBS_OBJECT(
3727 UVERBS_OBJECT_AH,
3728 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH,
3729 ib_uverbs_create_ah,
3730 UAPI_DEF_WRITE_UDATA_IO(
3731 struct ib_uverbs_create_ah,
3732 struct ib_uverbs_create_ah_resp)),
3733 DECLARE_UVERBS_WRITE(
3734 IB_USER_VERBS_CMD_DESTROY_AH,
3735 ib_uverbs_destroy_ah,
3736 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah)),
3737 UAPI_DEF_OBJ_NEEDS_FN(create_user_ah),
3738 UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)),
3739
3740 DECLARE_UVERBS_OBJECT(
3741 UVERBS_OBJECT_COMP_CHANNEL,
3742 DECLARE_UVERBS_WRITE(
3743 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
3744 ib_uverbs_create_comp_channel,
3745 UAPI_DEF_WRITE_IO(
3746 struct ib_uverbs_create_comp_channel,
3747 struct ib_uverbs_create_comp_channel_resp))),
3748
3749 DECLARE_UVERBS_OBJECT(
3750 UVERBS_OBJECT_CQ,
3751 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ,
3752 ib_uverbs_create_cq,
3753 UAPI_DEF_WRITE_UDATA_IO(
3754 struct ib_uverbs_create_cq,
3755 struct ib_uverbs_create_cq_resp),
3756 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3757 DECLARE_UVERBS_WRITE(
3758 IB_USER_VERBS_CMD_DESTROY_CQ,
3759 ib_uverbs_destroy_cq,
3760 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq,
3761 struct ib_uverbs_destroy_cq_resp),
3762 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)),
3763 DECLARE_UVERBS_WRITE(
3764 IB_USER_VERBS_CMD_POLL_CQ,
3765 ib_uverbs_poll_cq,
3766 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq,
3767 struct ib_uverbs_poll_cq_resp),
3768 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)),
3769 DECLARE_UVERBS_WRITE(
3770 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
3771 ib_uverbs_req_notify_cq,
3772 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq),
3773 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)),
3774 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ,
3775 ib_uverbs_resize_cq,
3776 UAPI_DEF_WRITE_UDATA_IO(
3777 struct ib_uverbs_resize_cq,
3778 struct ib_uverbs_resize_cq_resp),
3779 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)),
3780 DECLARE_UVERBS_WRITE_EX(
3781 IB_USER_VERBS_EX_CMD_CREATE_CQ,
3782 ib_uverbs_ex_create_cq,
3783 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq,
3784 reserved,
3785 struct ib_uverbs_ex_create_cq_resp,
3786 response_length),
3787 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3788 DECLARE_UVERBS_WRITE_EX(
3789 IB_USER_VERBS_EX_CMD_MODIFY_CQ,
3790 ib_uverbs_ex_modify_cq,
3791 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq),
3792 UAPI_DEF_METHOD_NEEDS_FN(modify_cq))),
3793
3794 DECLARE_UVERBS_OBJECT(
3795 UVERBS_OBJECT_DEVICE,
3796 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT,
3797 ib_uverbs_get_context,
3798 UAPI_DEF_WRITE_UDATA_IO(
3799 struct ib_uverbs_get_context,
3800 struct ib_uverbs_get_context_resp)),
3801 DECLARE_UVERBS_WRITE(
3802 IB_USER_VERBS_CMD_QUERY_DEVICE,
3803 ib_uverbs_query_device,
3804 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device,
3805 struct ib_uverbs_query_device_resp)),
3806 DECLARE_UVERBS_WRITE(
3807 IB_USER_VERBS_CMD_QUERY_PORT,
3808 ib_uverbs_query_port,
3809 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port,
3810 struct ib_uverbs_query_port_resp),
3811 UAPI_DEF_METHOD_NEEDS_FN(query_port)),
3812 DECLARE_UVERBS_WRITE_EX(
3813 IB_USER_VERBS_EX_CMD_QUERY_DEVICE,
3814 ib_uverbs_ex_query_device,
3815 UAPI_DEF_WRITE_IO_EX(
3816 struct ib_uverbs_ex_query_device,
3817 reserved,
3818 struct ib_uverbs_ex_query_device_resp,
3819 response_length),
3820 UAPI_DEF_METHOD_NEEDS_FN(query_device)),
3821 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext),
3822 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)),
3823
3824 DECLARE_UVERBS_OBJECT(
3825 UVERBS_OBJECT_FLOW,
3826 DECLARE_UVERBS_WRITE_EX(
3827 IB_USER_VERBS_EX_CMD_CREATE_FLOW,
3828 ib_uverbs_ex_create_flow,
3829 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow,
3830 flow_attr,
3831 struct ib_uverbs_create_flow_resp,
3832 flow_handle),
3833 UAPI_DEF_METHOD_NEEDS_FN(create_flow)),
3834 DECLARE_UVERBS_WRITE_EX(
3835 IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
3836 ib_uverbs_ex_destroy_flow,
3837 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow),
3838 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))),
3839
3840 DECLARE_UVERBS_OBJECT(
3841 UVERBS_OBJECT_MR,
3842 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR,
3843 ib_uverbs_dereg_mr,
3844 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr),
3845 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)),
3846 DECLARE_UVERBS_WRITE(
3847 IB_USER_VERBS_CMD_REG_MR,
3848 ib_uverbs_reg_mr,
3849 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr,
3850 struct ib_uverbs_reg_mr_resp),
3851 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)),
3852 DECLARE_UVERBS_WRITE(
3853 IB_USER_VERBS_CMD_REREG_MR,
3854 ib_uverbs_rereg_mr,
3855 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr,
3856 struct ib_uverbs_rereg_mr_resp),
3857 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))),
3858
3859 DECLARE_UVERBS_OBJECT(
3860 UVERBS_OBJECT_MW,
3861 DECLARE_UVERBS_WRITE(
3862 IB_USER_VERBS_CMD_ALLOC_MW,
3863 ib_uverbs_alloc_mw,
3864 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw,
3865 struct ib_uverbs_alloc_mw_resp),
3866 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)),
3867 DECLARE_UVERBS_WRITE(
3868 IB_USER_VERBS_CMD_DEALLOC_MW,
3869 ib_uverbs_dealloc_mw,
3870 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw),
3871 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))),
3872
3873 DECLARE_UVERBS_OBJECT(
3874 UVERBS_OBJECT_PD,
3875 DECLARE_UVERBS_WRITE(
3876 IB_USER_VERBS_CMD_ALLOC_PD,
3877 ib_uverbs_alloc_pd,
3878 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd,
3879 struct ib_uverbs_alloc_pd_resp),
3880 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)),
3881 DECLARE_UVERBS_WRITE(
3882 IB_USER_VERBS_CMD_DEALLOC_PD,
3883 ib_uverbs_dealloc_pd,
3884 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd),
3885 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))),
3886
3887 DECLARE_UVERBS_OBJECT(
3888 UVERBS_OBJECT_QP,
3889 DECLARE_UVERBS_WRITE(
3890 IB_USER_VERBS_CMD_ATTACH_MCAST,
3891 ib_uverbs_attach_mcast,
3892 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast),
3893 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast),
3894 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3895 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP,
3896 ib_uverbs_create_qp,
3897 UAPI_DEF_WRITE_UDATA_IO(
3898 struct ib_uverbs_create_qp,
3899 struct ib_uverbs_create_qp_resp),
3900 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3901 DECLARE_UVERBS_WRITE(
3902 IB_USER_VERBS_CMD_DESTROY_QP,
3903 ib_uverbs_destroy_qp,
3904 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp,
3905 struct ib_uverbs_destroy_qp_resp),
3906 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)),
3907 DECLARE_UVERBS_WRITE(
3908 IB_USER_VERBS_CMD_DETACH_MCAST,
3909 ib_uverbs_detach_mcast,
3910 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast),
3911 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3912 DECLARE_UVERBS_WRITE(
3913 IB_USER_VERBS_CMD_MODIFY_QP,
3914 ib_uverbs_modify_qp,
3915 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp),
3916 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)),
3917 DECLARE_UVERBS_WRITE(
3918 IB_USER_VERBS_CMD_POST_RECV,
3919 ib_uverbs_post_recv,
3920 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv,
3921 struct ib_uverbs_post_recv_resp),
3922 UAPI_DEF_METHOD_NEEDS_FN(post_recv)),
3923 DECLARE_UVERBS_WRITE(
3924 IB_USER_VERBS_CMD_POST_SEND,
3925 ib_uverbs_post_send,
3926 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send,
3927 struct ib_uverbs_post_send_resp),
3928 UAPI_DEF_METHOD_NEEDS_FN(post_send)),
3929 DECLARE_UVERBS_WRITE(
3930 IB_USER_VERBS_CMD_QUERY_QP,
3931 ib_uverbs_query_qp,
3932 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp,
3933 struct ib_uverbs_query_qp_resp),
3934 UAPI_DEF_METHOD_NEEDS_FN(query_qp)),
3935 DECLARE_UVERBS_WRITE_EX(
3936 IB_USER_VERBS_EX_CMD_CREATE_QP,
3937 ib_uverbs_ex_create_qp,
3938 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp,
3939 comp_mask,
3940 struct ib_uverbs_ex_create_qp_resp,
3941 response_length),
3942 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3943 DECLARE_UVERBS_WRITE_EX(
3944 IB_USER_VERBS_EX_CMD_MODIFY_QP,
3945 ib_uverbs_ex_modify_qp,
3946 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp,
3947 base,
3948 struct ib_uverbs_ex_modify_qp_resp,
3949 response_length),
3950 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))),
3951
3952 DECLARE_UVERBS_OBJECT(
3953 UVERBS_OBJECT_RWQ_IND_TBL,
3954 DECLARE_UVERBS_WRITE_EX(
3955 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
3956 ib_uverbs_ex_create_rwq_ind_table,
3957 UAPI_DEF_WRITE_IO_EX(
3958 struct ib_uverbs_ex_create_rwq_ind_table,
3959 log_ind_tbl_size,
3960 struct ib_uverbs_ex_create_rwq_ind_table_resp,
3961 ind_tbl_num),
3962 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)),
3963 DECLARE_UVERBS_WRITE_EX(
3964 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL,
3965 ib_uverbs_ex_destroy_rwq_ind_table,
3966 UAPI_DEF_WRITE_I(
3967 struct ib_uverbs_ex_destroy_rwq_ind_table),
3968 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))),
3969
3970 DECLARE_UVERBS_OBJECT(
3971 UVERBS_OBJECT_WQ,
3972 DECLARE_UVERBS_WRITE_EX(
3973 IB_USER_VERBS_EX_CMD_CREATE_WQ,
3974 ib_uverbs_ex_create_wq,
3975 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq,
3976 max_sge,
3977 struct ib_uverbs_ex_create_wq_resp,
3978 wqn),
3979 UAPI_DEF_METHOD_NEEDS_FN(create_wq)),
3980 DECLARE_UVERBS_WRITE_EX(
3981 IB_USER_VERBS_EX_CMD_DESTROY_WQ,
3982 ib_uverbs_ex_destroy_wq,
3983 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq,
3984 wq_handle,
3985 struct ib_uverbs_ex_destroy_wq_resp,
3986 reserved),
3987 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)),
3988 DECLARE_UVERBS_WRITE_EX(
3989 IB_USER_VERBS_EX_CMD_MODIFY_WQ,
3990 ib_uverbs_ex_modify_wq,
3991 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq,
3992 curr_wq_state),
3993 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))),
3994
3995 DECLARE_UVERBS_OBJECT(
3996 UVERBS_OBJECT_SRQ,
3997 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ,
3998 ib_uverbs_create_srq,
3999 UAPI_DEF_WRITE_UDATA_IO(
4000 struct ib_uverbs_create_srq,
4001 struct ib_uverbs_create_srq_resp),
4002 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4003 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ,
4004 ib_uverbs_create_xsrq,
4005 UAPI_DEF_WRITE_UDATA_IO(
4006 struct ib_uverbs_create_xsrq,
4007 struct ib_uverbs_create_srq_resp),
4008 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4009 DECLARE_UVERBS_WRITE(
4010 IB_USER_VERBS_CMD_DESTROY_SRQ,
4011 ib_uverbs_destroy_srq,
4012 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq,
4013 struct ib_uverbs_destroy_srq_resp),
4014 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)),
4015 DECLARE_UVERBS_WRITE(
4016 IB_USER_VERBS_CMD_MODIFY_SRQ,
4017 ib_uverbs_modify_srq,
4018 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq),
4019 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)),
4020 DECLARE_UVERBS_WRITE(
4021 IB_USER_VERBS_CMD_POST_SRQ_RECV,
4022 ib_uverbs_post_srq_recv,
4023 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv,
4024 struct ib_uverbs_post_srq_recv_resp),
4025 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)),
4026 DECLARE_UVERBS_WRITE(
4027 IB_USER_VERBS_CMD_QUERY_SRQ,
4028 ib_uverbs_query_srq,
4029 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq,
4030 struct ib_uverbs_query_srq_resp),
4031 UAPI_DEF_METHOD_NEEDS_FN(query_srq))),
4032
4033 DECLARE_UVERBS_OBJECT(
4034 UVERBS_OBJECT_XRCD,
4035 DECLARE_UVERBS_WRITE(
4036 IB_USER_VERBS_CMD_CLOSE_XRCD,
4037 ib_uverbs_close_xrcd,
4038 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd)),
4039 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP,
4040 ib_uverbs_open_qp,
4041 UAPI_DEF_WRITE_UDATA_IO(
4042 struct ib_uverbs_open_qp,
4043 struct ib_uverbs_create_qp_resp)),
4044 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD,
4045 ib_uverbs_open_xrcd,
4046 UAPI_DEF_WRITE_UDATA_IO(
4047 struct ib_uverbs_open_xrcd,
4048 struct ib_uverbs_open_xrcd_resp)),
4049 UAPI_DEF_OBJ_NEEDS_FN(alloc_xrcd),
4050 UAPI_DEF_OBJ_NEEDS_FN(dealloc_xrcd)),
4051
4052 {},
4053};
1/*
2 * Copyright (c) 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
4 * Copyright (c) 2005 PathScale, Inc. All rights reserved.
5 * Copyright (c) 2006 Mellanox Technologies. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36#include <linux/file.h>
37#include <linux/fs.h>
38#include <linux/slab.h>
39#include <linux/sched.h>
40
41#include <linux/uaccess.h>
42
43#include <rdma/uverbs_types.h>
44#include <rdma/uverbs_std_types.h>
45#include "rdma_core.h"
46
47#include "uverbs.h"
48#include "core_priv.h"
49
50/*
51 * Copy a response to userspace. If the provided 'resp' is larger than the
52 * user buffer it is silently truncated. If the user provided a larger buffer
53 * then the trailing portion is zero filled.
54 *
55 * These semantics are intended to support future extension of the output
56 * structures.
57 */
58static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp,
59 size_t resp_len)
60{
61 int ret;
62
63 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
64 return uverbs_copy_to_struct_or_zero(
65 attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len);
66
67 if (copy_to_user(attrs->ucore.outbuf, resp,
68 min(attrs->ucore.outlen, resp_len)))
69 return -EFAULT;
70
71 if (resp_len < attrs->ucore.outlen) {
72 /*
73 * Zero fill any extra memory that user
74 * space might have provided.
75 */
76 ret = clear_user(attrs->ucore.outbuf + resp_len,
77 attrs->ucore.outlen - resp_len);
78 if (ret)
79 return -EFAULT;
80 }
81
82 return 0;
83}
84
85/*
86 * Copy a request from userspace. If the provided 'req' is larger than the
87 * user buffer then the user buffer is zero extended into the 'req'. If 'req'
88 * is smaller than the user buffer then the uncopied bytes in the user buffer
89 * must be zero.
90 */
91static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req,
92 size_t req_len)
93{
94 if (copy_from_user(req, attrs->ucore.inbuf,
95 min(attrs->ucore.inlen, req_len)))
96 return -EFAULT;
97
98 if (attrs->ucore.inlen < req_len) {
99 memset(req + attrs->ucore.inlen, 0,
100 req_len - attrs->ucore.inlen);
101 } else if (attrs->ucore.inlen > req_len) {
102 if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len,
103 attrs->ucore.inlen - req_len))
104 return -EOPNOTSUPP;
105 }
106 return 0;
107}
108
109/*
110 * Generate the value for the 'response_length' protocol used by write_ex.
111 * This is the number of bytes the kernel actually wrote. Userspace can use
112 * this to detect what structure members in the response the kernel
113 * understood.
114 */
115static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs,
116 size_t resp_len)
117{
118 return min_t(size_t, attrs->ucore.outlen, resp_len);
119}
120
121/*
122 * The iterator version of the request interface is for handlers that need to
123 * step over a flex array at the end of a command header.
124 */
125struct uverbs_req_iter {
126 const void __user *cur;
127 const void __user *end;
128};
129
130static int uverbs_request_start(struct uverbs_attr_bundle *attrs,
131 struct uverbs_req_iter *iter,
132 void *req,
133 size_t req_len)
134{
135 if (attrs->ucore.inlen < req_len)
136 return -ENOSPC;
137
138 if (copy_from_user(req, attrs->ucore.inbuf, req_len))
139 return -EFAULT;
140
141 iter->cur = attrs->ucore.inbuf + req_len;
142 iter->end = attrs->ucore.inbuf + attrs->ucore.inlen;
143 return 0;
144}
145
146static int uverbs_request_next(struct uverbs_req_iter *iter, void *val,
147 size_t len)
148{
149 if (iter->cur + len > iter->end)
150 return -ENOSPC;
151
152 if (copy_from_user(val, iter->cur, len))
153 return -EFAULT;
154
155 iter->cur += len;
156 return 0;
157}
158
159static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter,
160 size_t len)
161{
162 const void __user *res = iter->cur;
163
164 if (len > iter->end - iter->cur)
165 return (void __force __user *)ERR_PTR(-ENOSPC);
166 iter->cur += len;
167 return res;
168}
169
170static int uverbs_request_finish(struct uverbs_req_iter *iter)
171{
172 if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur))
173 return -EOPNOTSUPP;
174 return 0;
175}
176
177/*
178 * When calling a destroy function during an error unwind we need to pass in
179 * the udata that is sanitized of all user arguments. Ie from the driver
180 * perspective it looks like no udata was passed.
181 */
182struct ib_udata *uverbs_get_cleared_udata(struct uverbs_attr_bundle *attrs)
183{
184 attrs->driver_udata = (struct ib_udata){};
185 return &attrs->driver_udata;
186}
187
188static struct ib_uverbs_completion_event_file *
189_ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs)
190{
191 struct ib_uobject *uobj = ufd_get_read(UVERBS_OBJECT_COMP_CHANNEL,
192 fd, attrs);
193
194 if (IS_ERR(uobj))
195 return (void *)uobj;
196
197 uverbs_uobject_get(uobj);
198 uobj_put_read(uobj);
199
200 return container_of(uobj, struct ib_uverbs_completion_event_file,
201 uobj);
202}
203#define ib_uverbs_lookup_comp_file(_fd, _ufile) \
204 _ib_uverbs_lookup_comp_file((_fd)*typecheck(s32, _fd), _ufile)
205
206int ib_alloc_ucontext(struct uverbs_attr_bundle *attrs)
207{
208 struct ib_uverbs_file *ufile = attrs->ufile;
209 struct ib_ucontext *ucontext;
210 struct ib_device *ib_dev;
211
212 ib_dev = srcu_dereference(ufile->device->ib_dev,
213 &ufile->device->disassociate_srcu);
214 if (!ib_dev)
215 return -EIO;
216
217 ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext);
218 if (!ucontext)
219 return -ENOMEM;
220
221 ucontext->device = ib_dev;
222 ucontext->ufile = ufile;
223 xa_init_flags(&ucontext->mmap_xa, XA_FLAGS_ALLOC);
224
225 rdma_restrack_new(&ucontext->res, RDMA_RESTRACK_CTX);
226 rdma_restrack_set_name(&ucontext->res, NULL);
227 attrs->context = ucontext;
228 return 0;
229}
230
231int ib_init_ucontext(struct uverbs_attr_bundle *attrs)
232{
233 struct ib_ucontext *ucontext = attrs->context;
234 struct ib_uverbs_file *file = attrs->ufile;
235 int ret;
236
237 if (!down_read_trylock(&file->hw_destroy_rwsem))
238 return -EIO;
239 mutex_lock(&file->ucontext_lock);
240 if (file->ucontext) {
241 ret = -EINVAL;
242 goto err;
243 }
244
245 ret = ib_rdmacg_try_charge(&ucontext->cg_obj, ucontext->device,
246 RDMACG_RESOURCE_HCA_HANDLE);
247 if (ret)
248 goto err;
249
250 ret = ucontext->device->ops.alloc_ucontext(ucontext,
251 &attrs->driver_udata);
252 if (ret)
253 goto err_uncharge;
254
255 rdma_restrack_add(&ucontext->res);
256
257 /*
258 * Make sure that ib_uverbs_get_ucontext() sees the pointer update
259 * only after all writes to setup the ucontext have completed
260 */
261 smp_store_release(&file->ucontext, ucontext);
262
263 mutex_unlock(&file->ucontext_lock);
264 up_read(&file->hw_destroy_rwsem);
265 return 0;
266
267err_uncharge:
268 ib_rdmacg_uncharge(&ucontext->cg_obj, ucontext->device,
269 RDMACG_RESOURCE_HCA_HANDLE);
270err:
271 mutex_unlock(&file->ucontext_lock);
272 up_read(&file->hw_destroy_rwsem);
273 return ret;
274}
275
276static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs)
277{
278 struct ib_uverbs_get_context_resp resp;
279 struct ib_uverbs_get_context cmd;
280 struct ib_device *ib_dev;
281 struct ib_uobject *uobj;
282 int ret;
283
284 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
285 if (ret)
286 return ret;
287
288 ret = ib_alloc_ucontext(attrs);
289 if (ret)
290 return ret;
291
292 uobj = uobj_alloc(UVERBS_OBJECT_ASYNC_EVENT, attrs, &ib_dev);
293 if (IS_ERR(uobj)) {
294 ret = PTR_ERR(uobj);
295 goto err_ucontext;
296 }
297
298 resp = (struct ib_uverbs_get_context_resp){
299 .num_comp_vectors = attrs->ufile->device->num_comp_vectors,
300 .async_fd = uobj->id,
301 };
302 ret = uverbs_response(attrs, &resp, sizeof(resp));
303 if (ret)
304 goto err_uobj;
305
306 ret = ib_init_ucontext(attrs);
307 if (ret)
308 goto err_uobj;
309
310 ib_uverbs_init_async_event_file(
311 container_of(uobj, struct ib_uverbs_async_event_file, uobj));
312 rdma_alloc_commit_uobject(uobj, attrs);
313 return 0;
314
315err_uobj:
316 rdma_alloc_abort_uobject(uobj, attrs, false);
317err_ucontext:
318 rdma_restrack_put(&attrs->context->res);
319 kfree(attrs->context);
320 attrs->context = NULL;
321 return ret;
322}
323
324static void copy_query_dev_fields(struct ib_ucontext *ucontext,
325 struct ib_uverbs_query_device_resp *resp,
326 struct ib_device_attr *attr)
327{
328 struct ib_device *ib_dev = ucontext->device;
329
330 resp->fw_ver = attr->fw_ver;
331 resp->node_guid = ib_dev->node_guid;
332 resp->sys_image_guid = attr->sys_image_guid;
333 resp->max_mr_size = attr->max_mr_size;
334 resp->page_size_cap = attr->page_size_cap;
335 resp->vendor_id = attr->vendor_id;
336 resp->vendor_part_id = attr->vendor_part_id;
337 resp->hw_ver = attr->hw_ver;
338 resp->max_qp = attr->max_qp;
339 resp->max_qp_wr = attr->max_qp_wr;
340 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags);
341 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge);
342 resp->max_sge_rd = attr->max_sge_rd;
343 resp->max_cq = attr->max_cq;
344 resp->max_cqe = attr->max_cqe;
345 resp->max_mr = attr->max_mr;
346 resp->max_pd = attr->max_pd;
347 resp->max_qp_rd_atom = attr->max_qp_rd_atom;
348 resp->max_ee_rd_atom = attr->max_ee_rd_atom;
349 resp->max_res_rd_atom = attr->max_res_rd_atom;
350 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom;
351 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom;
352 resp->atomic_cap = attr->atomic_cap;
353 resp->max_ee = attr->max_ee;
354 resp->max_rdd = attr->max_rdd;
355 resp->max_mw = attr->max_mw;
356 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp;
357 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp;
358 resp->max_mcast_grp = attr->max_mcast_grp;
359 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
360 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
361 resp->max_ah = attr->max_ah;
362 resp->max_srq = attr->max_srq;
363 resp->max_srq_wr = attr->max_srq_wr;
364 resp->max_srq_sge = attr->max_srq_sge;
365 resp->max_pkeys = attr->max_pkeys;
366 resp->local_ca_ack_delay = attr->local_ca_ack_delay;
367 resp->phys_port_cnt = min_t(u32, ib_dev->phys_port_cnt, U8_MAX);
368}
369
370static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs)
371{
372 struct ib_uverbs_query_device cmd;
373 struct ib_uverbs_query_device_resp resp;
374 struct ib_ucontext *ucontext;
375 int ret;
376
377 ucontext = ib_uverbs_get_ucontext(attrs);
378 if (IS_ERR(ucontext))
379 return PTR_ERR(ucontext);
380
381 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
382 if (ret)
383 return ret;
384
385 memset(&resp, 0, sizeof resp);
386 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs);
387
388 return uverbs_response(attrs, &resp, sizeof(resp));
389}
390
391static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs)
392{
393 struct ib_uverbs_query_port cmd;
394 struct ib_uverbs_query_port_resp resp;
395 struct ib_port_attr attr;
396 int ret;
397 struct ib_ucontext *ucontext;
398 struct ib_device *ib_dev;
399
400 ucontext = ib_uverbs_get_ucontext(attrs);
401 if (IS_ERR(ucontext))
402 return PTR_ERR(ucontext);
403 ib_dev = ucontext->device;
404
405 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
406 if (ret)
407 return ret;
408
409 ret = ib_query_port(ib_dev, cmd.port_num, &attr);
410 if (ret)
411 return ret;
412
413 memset(&resp, 0, sizeof resp);
414 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num);
415
416 return uverbs_response(attrs, &resp, sizeof(resp));
417}
418
419static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs)
420{
421 struct ib_uverbs_alloc_pd_resp resp = {};
422 struct ib_uverbs_alloc_pd cmd;
423 struct ib_uobject *uobj;
424 struct ib_pd *pd;
425 int ret;
426 struct ib_device *ib_dev;
427
428 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
429 if (ret)
430 return ret;
431
432 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev);
433 if (IS_ERR(uobj))
434 return PTR_ERR(uobj);
435
436 pd = rdma_zalloc_drv_obj(ib_dev, ib_pd);
437 if (!pd) {
438 ret = -ENOMEM;
439 goto err;
440 }
441
442 pd->device = ib_dev;
443 pd->uobject = uobj;
444 atomic_set(&pd->usecnt, 0);
445
446 rdma_restrack_new(&pd->res, RDMA_RESTRACK_PD);
447 rdma_restrack_set_name(&pd->res, NULL);
448
449 ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata);
450 if (ret)
451 goto err_alloc;
452 rdma_restrack_add(&pd->res);
453
454 uobj->object = pd;
455 uobj_finalize_uobj_create(uobj, attrs);
456
457 resp.pd_handle = uobj->id;
458 return uverbs_response(attrs, &resp, sizeof(resp));
459
460err_alloc:
461 rdma_restrack_put(&pd->res);
462 kfree(pd);
463err:
464 uobj_alloc_abort(uobj, attrs);
465 return ret;
466}
467
468static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs)
469{
470 struct ib_uverbs_dealloc_pd cmd;
471 int ret;
472
473 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
474 if (ret)
475 return ret;
476
477 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
478}
479
480struct xrcd_table_entry {
481 struct rb_node node;
482 struct ib_xrcd *xrcd;
483 struct inode *inode;
484};
485
486static int xrcd_table_insert(struct ib_uverbs_device *dev,
487 struct inode *inode,
488 struct ib_xrcd *xrcd)
489{
490 struct xrcd_table_entry *entry, *scan;
491 struct rb_node **p = &dev->xrcd_tree.rb_node;
492 struct rb_node *parent = NULL;
493
494 entry = kmalloc(sizeof *entry, GFP_KERNEL);
495 if (!entry)
496 return -ENOMEM;
497
498 entry->xrcd = xrcd;
499 entry->inode = inode;
500
501 while (*p) {
502 parent = *p;
503 scan = rb_entry(parent, struct xrcd_table_entry, node);
504
505 if (inode < scan->inode) {
506 p = &(*p)->rb_left;
507 } else if (inode > scan->inode) {
508 p = &(*p)->rb_right;
509 } else {
510 kfree(entry);
511 return -EEXIST;
512 }
513 }
514
515 rb_link_node(&entry->node, parent, p);
516 rb_insert_color(&entry->node, &dev->xrcd_tree);
517 igrab(inode);
518 return 0;
519}
520
521static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
522 struct inode *inode)
523{
524 struct xrcd_table_entry *entry;
525 struct rb_node *p = dev->xrcd_tree.rb_node;
526
527 while (p) {
528 entry = rb_entry(p, struct xrcd_table_entry, node);
529
530 if (inode < entry->inode)
531 p = p->rb_left;
532 else if (inode > entry->inode)
533 p = p->rb_right;
534 else
535 return entry;
536 }
537
538 return NULL;
539}
540
541static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
542{
543 struct xrcd_table_entry *entry;
544
545 entry = xrcd_table_search(dev, inode);
546 if (!entry)
547 return NULL;
548
549 return entry->xrcd;
550}
551
552static void xrcd_table_delete(struct ib_uverbs_device *dev,
553 struct inode *inode)
554{
555 struct xrcd_table_entry *entry;
556
557 entry = xrcd_table_search(dev, inode);
558 if (entry) {
559 iput(inode);
560 rb_erase(&entry->node, &dev->xrcd_tree);
561 kfree(entry);
562 }
563}
564
565static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs)
566{
567 struct ib_uverbs_device *ibudev = attrs->ufile->device;
568 struct ib_uverbs_open_xrcd_resp resp = {};
569 struct ib_uverbs_open_xrcd cmd;
570 struct ib_uxrcd_object *obj;
571 struct ib_xrcd *xrcd = NULL;
572 struct inode *inode = NULL;
573 int new_xrcd = 0;
574 struct ib_device *ib_dev;
575 struct fd f = EMPTY_FD;
576 int ret;
577
578 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
579 if (ret)
580 return ret;
581
582 mutex_lock(&ibudev->xrcd_tree_mutex);
583
584 if (cmd.fd != -1) {
585 /* search for file descriptor */
586 f = fdget(cmd.fd);
587 if (fd_empty(f)) {
588 ret = -EBADF;
589 goto err_tree_mutex_unlock;
590 }
591
592 inode = file_inode(fd_file(f));
593 xrcd = find_xrcd(ibudev, inode);
594 if (!xrcd && !(cmd.oflags & O_CREAT)) {
595 /* no file descriptor. Need CREATE flag */
596 ret = -EAGAIN;
597 goto err_tree_mutex_unlock;
598 }
599
600 if (xrcd && cmd.oflags & O_EXCL) {
601 ret = -EINVAL;
602 goto err_tree_mutex_unlock;
603 }
604 }
605
606 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs,
607 &ib_dev);
608 if (IS_ERR(obj)) {
609 ret = PTR_ERR(obj);
610 goto err_tree_mutex_unlock;
611 }
612
613 if (!xrcd) {
614 xrcd = ib_alloc_xrcd_user(ib_dev, inode, &attrs->driver_udata);
615 if (IS_ERR(xrcd)) {
616 ret = PTR_ERR(xrcd);
617 goto err;
618 }
619 new_xrcd = 1;
620 }
621
622 atomic_set(&obj->refcnt, 0);
623 obj->uobject.object = xrcd;
624
625 if (inode) {
626 if (new_xrcd) {
627 /* create new inode/xrcd table entry */
628 ret = xrcd_table_insert(ibudev, inode, xrcd);
629 if (ret)
630 goto err_dealloc_xrcd;
631 }
632 atomic_inc(&xrcd->usecnt);
633 }
634
635 fdput(f);
636
637 mutex_unlock(&ibudev->xrcd_tree_mutex);
638 uobj_finalize_uobj_create(&obj->uobject, attrs);
639
640 resp.xrcd_handle = obj->uobject.id;
641 return uverbs_response(attrs, &resp, sizeof(resp));
642
643err_dealloc_xrcd:
644 ib_dealloc_xrcd_user(xrcd, uverbs_get_cleared_udata(attrs));
645
646err:
647 uobj_alloc_abort(&obj->uobject, attrs);
648
649err_tree_mutex_unlock:
650 fdput(f);
651
652 mutex_unlock(&ibudev->xrcd_tree_mutex);
653
654 return ret;
655}
656
657static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs)
658{
659 struct ib_uverbs_close_xrcd cmd;
660 int ret;
661
662 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
663 if (ret)
664 return ret;
665
666 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs);
667}
668
669int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd,
670 enum rdma_remove_reason why,
671 struct uverbs_attr_bundle *attrs)
672{
673 struct inode *inode;
674 int ret;
675 struct ib_uverbs_device *dev = attrs->ufile->device;
676
677 inode = xrcd->inode;
678 if (inode && !atomic_dec_and_test(&xrcd->usecnt))
679 return 0;
680
681 ret = ib_dealloc_xrcd_user(xrcd, &attrs->driver_udata);
682 if (ret) {
683 atomic_inc(&xrcd->usecnt);
684 return ret;
685 }
686
687 if (inode)
688 xrcd_table_delete(dev, inode);
689
690 return 0;
691}
692
693static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs)
694{
695 struct ib_uverbs_reg_mr_resp resp = {};
696 struct ib_uverbs_reg_mr cmd;
697 struct ib_uobject *uobj;
698 struct ib_pd *pd;
699 struct ib_mr *mr;
700 int ret;
701 struct ib_device *ib_dev;
702
703 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
704 if (ret)
705 return ret;
706
707 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
708 return -EINVAL;
709
710 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
711 if (IS_ERR(uobj))
712 return PTR_ERR(uobj);
713
714 ret = ib_check_mr_access(ib_dev, cmd.access_flags);
715 if (ret)
716 goto err_free;
717
718 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
719 if (!pd) {
720 ret = -EINVAL;
721 goto err_free;
722 }
723
724 mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
725 cmd.access_flags,
726 &attrs->driver_udata);
727 if (IS_ERR(mr)) {
728 ret = PTR_ERR(mr);
729 goto err_put;
730 }
731
732 mr->device = pd->device;
733 mr->pd = pd;
734 mr->type = IB_MR_TYPE_USER;
735 mr->dm = NULL;
736 mr->sig_attrs = NULL;
737 mr->uobject = uobj;
738 atomic_inc(&pd->usecnt);
739 mr->iova = cmd.hca_va;
740 mr->length = cmd.length;
741
742 rdma_restrack_new(&mr->res, RDMA_RESTRACK_MR);
743 rdma_restrack_set_name(&mr->res, NULL);
744 rdma_restrack_add(&mr->res);
745
746 uobj->object = mr;
747 uobj_put_obj_read(pd);
748 uobj_finalize_uobj_create(uobj, attrs);
749
750 resp.lkey = mr->lkey;
751 resp.rkey = mr->rkey;
752 resp.mr_handle = uobj->id;
753 return uverbs_response(attrs, &resp, sizeof(resp));
754
755err_put:
756 uobj_put_obj_read(pd);
757err_free:
758 uobj_alloc_abort(uobj, attrs);
759 return ret;
760}
761
762static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs)
763{
764 struct ib_uverbs_rereg_mr cmd;
765 struct ib_uverbs_rereg_mr_resp resp;
766 struct ib_mr *mr;
767 int ret;
768 struct ib_uobject *uobj;
769 struct ib_uobject *new_uobj;
770 struct ib_device *ib_dev;
771 struct ib_pd *orig_pd;
772 struct ib_pd *new_pd;
773 struct ib_mr *new_mr;
774
775 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
776 if (ret)
777 return ret;
778
779 if (!cmd.flags)
780 return -EINVAL;
781
782 if (cmd.flags & ~IB_MR_REREG_SUPPORTED)
783 return -EOPNOTSUPP;
784
785 if ((cmd.flags & IB_MR_REREG_TRANS) &&
786 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
787 return -EINVAL;
788
789 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
790 if (IS_ERR(uobj))
791 return PTR_ERR(uobj);
792
793 mr = uobj->object;
794
795 if (mr->dm) {
796 ret = -EINVAL;
797 goto put_uobjs;
798 }
799
800 if (cmd.flags & IB_MR_REREG_ACCESS) {
801 ret = ib_check_mr_access(mr->device, cmd.access_flags);
802 if (ret)
803 goto put_uobjs;
804 }
805
806 orig_pd = mr->pd;
807 if (cmd.flags & IB_MR_REREG_PD) {
808 new_pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle,
809 attrs);
810 if (!new_pd) {
811 ret = -EINVAL;
812 goto put_uobjs;
813 }
814 } else {
815 new_pd = mr->pd;
816 }
817
818 /*
819 * The driver might create a new HW object as part of the rereg, we need
820 * to have a uobject ready to hold it.
821 */
822 new_uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
823 if (IS_ERR(new_uobj)) {
824 ret = PTR_ERR(new_uobj);
825 goto put_uobj_pd;
826 }
827
828 new_mr = ib_dev->ops.rereg_user_mr(mr, cmd.flags, cmd.start, cmd.length,
829 cmd.hca_va, cmd.access_flags, new_pd,
830 &attrs->driver_udata);
831 if (IS_ERR(new_mr)) {
832 ret = PTR_ERR(new_mr);
833 goto put_new_uobj;
834 }
835 if (new_mr) {
836 new_mr->device = new_pd->device;
837 new_mr->pd = new_pd;
838 new_mr->type = IB_MR_TYPE_USER;
839 new_mr->uobject = uobj;
840 atomic_inc(&new_pd->usecnt);
841 new_uobj->object = new_mr;
842
843 rdma_restrack_new(&new_mr->res, RDMA_RESTRACK_MR);
844 rdma_restrack_set_name(&new_mr->res, NULL);
845 rdma_restrack_add(&new_mr->res);
846
847 /*
848 * The new uobj for the new HW object is put into the same spot
849 * in the IDR and the old uobj & HW object is deleted.
850 */
851 rdma_assign_uobject(uobj, new_uobj, attrs);
852 rdma_alloc_commit_uobject(new_uobj, attrs);
853 uobj_put_destroy(uobj);
854 new_uobj = NULL;
855 uobj = NULL;
856 mr = new_mr;
857 } else {
858 if (cmd.flags & IB_MR_REREG_PD) {
859 atomic_dec(&orig_pd->usecnt);
860 mr->pd = new_pd;
861 atomic_inc(&new_pd->usecnt);
862 }
863 if (cmd.flags & IB_MR_REREG_TRANS) {
864 mr->iova = cmd.hca_va;
865 mr->length = cmd.length;
866 }
867 }
868
869 memset(&resp, 0, sizeof(resp));
870 resp.lkey = mr->lkey;
871 resp.rkey = mr->rkey;
872
873 ret = uverbs_response(attrs, &resp, sizeof(resp));
874
875put_new_uobj:
876 if (new_uobj)
877 uobj_alloc_abort(new_uobj, attrs);
878put_uobj_pd:
879 if (cmd.flags & IB_MR_REREG_PD)
880 uobj_put_obj_read(new_pd);
881
882put_uobjs:
883 if (uobj)
884 uobj_put_write(uobj);
885
886 return ret;
887}
888
889static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs)
890{
891 struct ib_uverbs_dereg_mr cmd;
892 int ret;
893
894 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
895 if (ret)
896 return ret;
897
898 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
899}
900
901static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
902{
903 struct ib_uverbs_alloc_mw cmd;
904 struct ib_uverbs_alloc_mw_resp resp = {};
905 struct ib_uobject *uobj;
906 struct ib_pd *pd;
907 struct ib_mw *mw;
908 int ret;
909 struct ib_device *ib_dev;
910
911 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
912 if (ret)
913 return ret;
914
915 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev);
916 if (IS_ERR(uobj))
917 return PTR_ERR(uobj);
918
919 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
920 if (!pd) {
921 ret = -EINVAL;
922 goto err_free;
923 }
924
925 if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) {
926 ret = -EINVAL;
927 goto err_put;
928 }
929
930 mw = rdma_zalloc_drv_obj(ib_dev, ib_mw);
931 if (!mw) {
932 ret = -ENOMEM;
933 goto err_put;
934 }
935
936 mw->device = ib_dev;
937 mw->pd = pd;
938 mw->uobject = uobj;
939 mw->type = cmd.mw_type;
940
941 ret = pd->device->ops.alloc_mw(mw, &attrs->driver_udata);
942 if (ret)
943 goto err_alloc;
944
945 atomic_inc(&pd->usecnt);
946
947 uobj->object = mw;
948 uobj_put_obj_read(pd);
949 uobj_finalize_uobj_create(uobj, attrs);
950
951 resp.rkey = mw->rkey;
952 resp.mw_handle = uobj->id;
953 return uverbs_response(attrs, &resp, sizeof(resp));
954
955err_alloc:
956 kfree(mw);
957err_put:
958 uobj_put_obj_read(pd);
959err_free:
960 uobj_alloc_abort(uobj, attrs);
961 return ret;
962}
963
964static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs)
965{
966 struct ib_uverbs_dealloc_mw cmd;
967 int ret;
968
969 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
970 if (ret)
971 return ret;
972
973 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs);
974}
975
976static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs)
977{
978 struct ib_uverbs_create_comp_channel cmd;
979 struct ib_uverbs_create_comp_channel_resp resp;
980 struct ib_uobject *uobj;
981 struct ib_uverbs_completion_event_file *ev_file;
982 struct ib_device *ib_dev;
983 int ret;
984
985 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
986 if (ret)
987 return ret;
988
989 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev);
990 if (IS_ERR(uobj))
991 return PTR_ERR(uobj);
992
993 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file,
994 uobj);
995 ib_uverbs_init_event_queue(&ev_file->ev_queue);
996 uobj_finalize_uobj_create(uobj, attrs);
997
998 resp.fd = uobj->id;
999 return uverbs_response(attrs, &resp, sizeof(resp));
1000}
1001
1002static int create_cq(struct uverbs_attr_bundle *attrs,
1003 struct ib_uverbs_ex_create_cq *cmd)
1004{
1005 struct ib_ucq_object *obj;
1006 struct ib_uverbs_completion_event_file *ev_file = NULL;
1007 struct ib_cq *cq;
1008 int ret;
1009 struct ib_uverbs_ex_create_cq_resp resp = {};
1010 struct ib_cq_init_attr attr = {};
1011 struct ib_device *ib_dev;
1012
1013 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors)
1014 return -EINVAL;
1015
1016 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs,
1017 &ib_dev);
1018 if (IS_ERR(obj))
1019 return PTR_ERR(obj);
1020
1021 if (cmd->comp_channel >= 0) {
1022 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs);
1023 if (IS_ERR(ev_file)) {
1024 ret = PTR_ERR(ev_file);
1025 goto err;
1026 }
1027 }
1028
1029 obj->uevent.uobject.user_handle = cmd->user_handle;
1030 INIT_LIST_HEAD(&obj->comp_list);
1031 INIT_LIST_HEAD(&obj->uevent.event_list);
1032
1033 attr.cqe = cmd->cqe;
1034 attr.comp_vector = cmd->comp_vector;
1035 attr.flags = cmd->flags;
1036
1037 cq = rdma_zalloc_drv_obj(ib_dev, ib_cq);
1038 if (!cq) {
1039 ret = -ENOMEM;
1040 goto err_file;
1041 }
1042 cq->device = ib_dev;
1043 cq->uobject = obj;
1044 cq->comp_handler = ib_uverbs_comp_handler;
1045 cq->event_handler = ib_uverbs_cq_event_handler;
1046 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
1047 atomic_set(&cq->usecnt, 0);
1048
1049 rdma_restrack_new(&cq->res, RDMA_RESTRACK_CQ);
1050 rdma_restrack_set_name(&cq->res, NULL);
1051
1052 ret = ib_dev->ops.create_cq(cq, &attr, attrs);
1053 if (ret)
1054 goto err_free;
1055 rdma_restrack_add(&cq->res);
1056
1057 obj->uevent.uobject.object = cq;
1058 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
1059 if (obj->uevent.event_file)
1060 uverbs_uobject_get(&obj->uevent.event_file->uobj);
1061 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1062
1063 resp.base.cq_handle = obj->uevent.uobject.id;
1064 resp.base.cqe = cq->cqe;
1065 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1066 return uverbs_response(attrs, &resp, sizeof(resp));
1067
1068err_free:
1069 rdma_restrack_put(&cq->res);
1070 kfree(cq);
1071err_file:
1072 if (ev_file)
1073 ib_uverbs_release_ucq(ev_file, obj);
1074err:
1075 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1076 return ret;
1077}
1078
1079static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs)
1080{
1081 struct ib_uverbs_create_cq cmd;
1082 struct ib_uverbs_ex_create_cq cmd_ex;
1083 int ret;
1084
1085 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1086 if (ret)
1087 return ret;
1088
1089 memset(&cmd_ex, 0, sizeof(cmd_ex));
1090 cmd_ex.user_handle = cmd.user_handle;
1091 cmd_ex.cqe = cmd.cqe;
1092 cmd_ex.comp_vector = cmd.comp_vector;
1093 cmd_ex.comp_channel = cmd.comp_channel;
1094
1095 return create_cq(attrs, &cmd_ex);
1096}
1097
1098static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs)
1099{
1100 struct ib_uverbs_ex_create_cq cmd;
1101 int ret;
1102
1103 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1104 if (ret)
1105 return ret;
1106
1107 if (cmd.comp_mask)
1108 return -EINVAL;
1109
1110 if (cmd.reserved)
1111 return -EINVAL;
1112
1113 return create_cq(attrs, &cmd);
1114}
1115
1116static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs)
1117{
1118 struct ib_uverbs_resize_cq cmd;
1119 struct ib_uverbs_resize_cq_resp resp = {};
1120 struct ib_cq *cq;
1121 int ret;
1122
1123 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1124 if (ret)
1125 return ret;
1126
1127 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1128 if (!cq)
1129 return -EINVAL;
1130
1131 ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata);
1132 if (ret)
1133 goto out;
1134
1135 resp.cqe = cq->cqe;
1136
1137 ret = uverbs_response(attrs, &resp, sizeof(resp));
1138out:
1139 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1140 UVERBS_LOOKUP_READ);
1141
1142 return ret;
1143}
1144
1145static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest,
1146 struct ib_wc *wc)
1147{
1148 struct ib_uverbs_wc tmp;
1149
1150 tmp.wr_id = wc->wr_id;
1151 tmp.status = wc->status;
1152 tmp.opcode = wc->opcode;
1153 tmp.vendor_err = wc->vendor_err;
1154 tmp.byte_len = wc->byte_len;
1155 tmp.ex.imm_data = wc->ex.imm_data;
1156 tmp.qp_num = wc->qp->qp_num;
1157 tmp.src_qp = wc->src_qp;
1158 tmp.wc_flags = wc->wc_flags;
1159 tmp.pkey_index = wc->pkey_index;
1160 if (rdma_cap_opa_ah(ib_dev, wc->port_num))
1161 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid);
1162 else
1163 tmp.slid = ib_lid_cpu16(wc->slid);
1164 tmp.sl = wc->sl;
1165 tmp.dlid_path_bits = wc->dlid_path_bits;
1166 tmp.port_num = wc->port_num;
1167 tmp.reserved = 0;
1168
1169 if (copy_to_user(dest, &tmp, sizeof tmp))
1170 return -EFAULT;
1171
1172 return 0;
1173}
1174
1175static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs)
1176{
1177 struct ib_uverbs_poll_cq cmd;
1178 struct ib_uverbs_poll_cq_resp resp;
1179 u8 __user *header_ptr;
1180 u8 __user *data_ptr;
1181 struct ib_cq *cq;
1182 struct ib_wc wc;
1183 int ret;
1184
1185 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1186 if (ret)
1187 return ret;
1188
1189 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1190 if (!cq)
1191 return -EINVAL;
1192
1193 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1194 header_ptr = attrs->ucore.outbuf;
1195 data_ptr = header_ptr + sizeof resp;
1196
1197 memset(&resp, 0, sizeof resp);
1198 while (resp.count < cmd.ne) {
1199 ret = ib_poll_cq(cq, 1, &wc);
1200 if (ret < 0)
1201 goto out_put;
1202 if (!ret)
1203 break;
1204
1205 ret = copy_wc_to_user(cq->device, data_ptr, &wc);
1206 if (ret)
1207 goto out_put;
1208
1209 data_ptr += sizeof(struct ib_uverbs_wc);
1210 ++resp.count;
1211 }
1212
1213 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1214 ret = -EFAULT;
1215 goto out_put;
1216 }
1217 ret = 0;
1218
1219 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
1220 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT);
1221
1222out_put:
1223 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1224 UVERBS_LOOKUP_READ);
1225 return ret;
1226}
1227
1228static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs)
1229{
1230 struct ib_uverbs_req_notify_cq cmd;
1231 struct ib_cq *cq;
1232 int ret;
1233
1234 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1235 if (ret)
1236 return ret;
1237
1238 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1239 if (!cq)
1240 return -EINVAL;
1241
1242 ib_req_notify_cq(cq, cmd.solicited_only ?
1243 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1244
1245 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1246 UVERBS_LOOKUP_READ);
1247 return 0;
1248}
1249
1250static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs)
1251{
1252 struct ib_uverbs_destroy_cq cmd;
1253 struct ib_uverbs_destroy_cq_resp resp;
1254 struct ib_uobject *uobj;
1255 struct ib_ucq_object *obj;
1256 int ret;
1257
1258 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1259 if (ret)
1260 return ret;
1261
1262 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1263 if (IS_ERR(uobj))
1264 return PTR_ERR(uobj);
1265
1266 obj = container_of(uobj, struct ib_ucq_object, uevent.uobject);
1267 memset(&resp, 0, sizeof(resp));
1268 resp.comp_events_reported = obj->comp_events_reported;
1269 resp.async_events_reported = obj->uevent.events_reported;
1270
1271 uobj_put_destroy(uobj);
1272
1273 return uverbs_response(attrs, &resp, sizeof(resp));
1274}
1275
1276static int create_qp(struct uverbs_attr_bundle *attrs,
1277 struct ib_uverbs_ex_create_qp *cmd)
1278{
1279 struct ib_uqp_object *obj;
1280 struct ib_device *device;
1281 struct ib_pd *pd = NULL;
1282 struct ib_xrcd *xrcd = NULL;
1283 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT);
1284 struct ib_cq *scq = NULL, *rcq = NULL;
1285 struct ib_srq *srq = NULL;
1286 struct ib_qp *qp;
1287 struct ib_qp_init_attr attr = {};
1288 struct ib_uverbs_ex_create_qp_resp resp = {};
1289 int ret;
1290 struct ib_rwq_ind_table *ind_tbl = NULL;
1291 bool has_sq = true;
1292 struct ib_device *ib_dev;
1293
1294 switch (cmd->qp_type) {
1295 case IB_QPT_RAW_PACKET:
1296 if (!capable(CAP_NET_RAW))
1297 return -EPERM;
1298 break;
1299 case IB_QPT_RC:
1300 case IB_QPT_UC:
1301 case IB_QPT_UD:
1302 case IB_QPT_XRC_INI:
1303 case IB_QPT_XRC_TGT:
1304 case IB_QPT_DRIVER:
1305 break;
1306 default:
1307 return -EINVAL;
1308 }
1309
1310 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1311 &ib_dev);
1312 if (IS_ERR(obj))
1313 return PTR_ERR(obj);
1314 obj->uxrcd = NULL;
1315 obj->uevent.uobject.user_handle = cmd->user_handle;
1316 mutex_init(&obj->mcast_lock);
1317
1318 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) {
1319 ind_tbl = uobj_get_obj_read(rwq_ind_table,
1320 UVERBS_OBJECT_RWQ_IND_TBL,
1321 cmd->rwq_ind_tbl_handle, attrs);
1322 if (!ind_tbl) {
1323 ret = -EINVAL;
1324 goto err_put;
1325 }
1326
1327 attr.rwq_ind_tbl = ind_tbl;
1328 }
1329
1330 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1331 ret = -EINVAL;
1332 goto err_put;
1333 }
1334
1335 if (ind_tbl && !cmd->max_send_wr)
1336 has_sq = false;
1337
1338 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1339 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle,
1340 attrs);
1341
1342 if (IS_ERR(xrcd_uobj)) {
1343 ret = -EINVAL;
1344 goto err_put;
1345 }
1346
1347 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1348 if (!xrcd) {
1349 ret = -EINVAL;
1350 goto err_put;
1351 }
1352 device = xrcd->device;
1353 } else {
1354 if (cmd->qp_type == IB_QPT_XRC_INI) {
1355 cmd->max_recv_wr = 0;
1356 cmd->max_recv_sge = 0;
1357 } else {
1358 if (cmd->is_srq) {
1359 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ,
1360 cmd->srq_handle, attrs);
1361 if (!srq || srq->srq_type == IB_SRQT_XRC) {
1362 ret = -EINVAL;
1363 goto err_put;
1364 }
1365 }
1366
1367 if (!ind_tbl) {
1368 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1369 rcq = uobj_get_obj_read(
1370 cq, UVERBS_OBJECT_CQ,
1371 cmd->recv_cq_handle, attrs);
1372 if (!rcq) {
1373 ret = -EINVAL;
1374 goto err_put;
1375 }
1376 }
1377 }
1378 }
1379
1380 if (has_sq)
1381 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
1382 cmd->send_cq_handle, attrs);
1383 if (!ind_tbl && cmd->qp_type != IB_QPT_XRC_INI)
1384 rcq = rcq ?: scq;
1385 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle,
1386 attrs);
1387 if (!pd || (!scq && has_sq)) {
1388 ret = -EINVAL;
1389 goto err_put;
1390 }
1391
1392 device = pd->device;
1393 }
1394
1395 attr.event_handler = ib_uverbs_qp_event_handler;
1396 attr.send_cq = scq;
1397 attr.recv_cq = rcq;
1398 attr.srq = srq;
1399 attr.xrcd = xrcd;
1400 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1401 IB_SIGNAL_REQ_WR;
1402 attr.qp_type = cmd->qp_type;
1403
1404 attr.cap.max_send_wr = cmd->max_send_wr;
1405 attr.cap.max_recv_wr = cmd->max_recv_wr;
1406 attr.cap.max_send_sge = cmd->max_send_sge;
1407 attr.cap.max_recv_sge = cmd->max_recv_sge;
1408 attr.cap.max_inline_data = cmd->max_inline_data;
1409
1410 INIT_LIST_HEAD(&obj->uevent.event_list);
1411 INIT_LIST_HEAD(&obj->mcast_list);
1412
1413 attr.create_flags = cmd->create_flags;
1414 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1415 IB_QP_CREATE_CROSS_CHANNEL |
1416 IB_QP_CREATE_MANAGED_SEND |
1417 IB_QP_CREATE_MANAGED_RECV |
1418 IB_QP_CREATE_SCATTER_FCS |
1419 IB_QP_CREATE_CVLAN_STRIPPING |
1420 IB_QP_CREATE_SOURCE_QPN |
1421 IB_QP_CREATE_PCI_WRITE_END_PADDING)) {
1422 ret = -EINVAL;
1423 goto err_put;
1424 }
1425
1426 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) {
1427 if (!capable(CAP_NET_RAW)) {
1428 ret = -EPERM;
1429 goto err_put;
1430 }
1431
1432 attr.source_qpn = cmd->source_qpn;
1433 }
1434
1435 qp = ib_create_qp_user(device, pd, &attr, &attrs->driver_udata, obj,
1436 KBUILD_MODNAME);
1437 if (IS_ERR(qp)) {
1438 ret = PTR_ERR(qp);
1439 goto err_put;
1440 }
1441 ib_qp_usecnt_inc(qp);
1442
1443 obj->uevent.uobject.object = qp;
1444 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
1445 if (obj->uevent.event_file)
1446 uverbs_uobject_get(&obj->uevent.event_file->uobj);
1447
1448 if (xrcd) {
1449 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1450 uobject);
1451 atomic_inc(&obj->uxrcd->refcnt);
1452 uobj_put_read(xrcd_uobj);
1453 }
1454
1455 if (pd)
1456 uobj_put_obj_read(pd);
1457 if (scq)
1458 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject,
1459 UVERBS_LOOKUP_READ);
1460 if (rcq && rcq != scq)
1461 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject,
1462 UVERBS_LOOKUP_READ);
1463 if (srq)
1464 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
1465 UVERBS_LOOKUP_READ);
1466 if (ind_tbl)
1467 uobj_put_obj_read(ind_tbl);
1468 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1469
1470 resp.base.qpn = qp->qp_num;
1471 resp.base.qp_handle = obj->uevent.uobject.id;
1472 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1473 resp.base.max_send_sge = attr.cap.max_send_sge;
1474 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1475 resp.base.max_send_wr = attr.cap.max_send_wr;
1476 resp.base.max_inline_data = attr.cap.max_inline_data;
1477 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1478 return uverbs_response(attrs, &resp, sizeof(resp));
1479
1480err_put:
1481 if (!IS_ERR(xrcd_uobj))
1482 uobj_put_read(xrcd_uobj);
1483 if (pd)
1484 uobj_put_obj_read(pd);
1485 if (scq)
1486 rdma_lookup_put_uobject(&scq->uobject->uevent.uobject,
1487 UVERBS_LOOKUP_READ);
1488 if (rcq && rcq != scq)
1489 rdma_lookup_put_uobject(&rcq->uobject->uevent.uobject,
1490 UVERBS_LOOKUP_READ);
1491 if (srq)
1492 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
1493 UVERBS_LOOKUP_READ);
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
1501static 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
1529static 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
1547static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs)
1548{
1549 struct ib_uverbs_create_qp_resp resp = {};
1550 struct ib_uverbs_open_qp cmd;
1551 struct ib_uqp_object *obj;
1552 struct ib_xrcd *xrcd;
1553 struct ib_qp *qp;
1554 struct ib_qp_open_attr attr = {};
1555 int ret;
1556 struct ib_uobject *xrcd_uobj;
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_num = cmd.qpn;
1582 attr.qp_type = cmd.qp_type;
1583
1584 INIT_LIST_HEAD(&obj->uevent.event_list);
1585 INIT_LIST_HEAD(&obj->mcast_list);
1586
1587 qp = ib_open_qp(xrcd, &attr);
1588 if (IS_ERR(qp)) {
1589 ret = PTR_ERR(qp);
1590 goto err_xrcd;
1591 }
1592
1593 obj->uevent.uobject.object = qp;
1594 obj->uevent.uobject.user_handle = cmd.user_handle;
1595
1596 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1597 atomic_inc(&obj->uxrcd->refcnt);
1598 qp->uobject = obj;
1599 uobj_put_read(xrcd_uobj);
1600 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
1601
1602 resp.qpn = qp->qp_num;
1603 resp.qp_handle = obj->uevent.uobject.id;
1604 return uverbs_response(attrs, &resp, sizeof(resp));
1605
1606err_xrcd:
1607 uobj_put_read(xrcd_uobj);
1608err_put:
1609 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1610 return ret;
1611}
1612
1613static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr,
1614 struct rdma_ah_attr *rdma_attr)
1615{
1616 const struct ib_global_route *grh;
1617
1618 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr);
1619 uverb_attr->sl = rdma_ah_get_sl(rdma_attr);
1620 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr);
1621 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr);
1622 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) &
1623 IB_AH_GRH);
1624 if (uverb_attr->is_global) {
1625 grh = rdma_ah_read_grh(rdma_attr);
1626 memcpy(uverb_attr->dgid, grh->dgid.raw, 16);
1627 uverb_attr->flow_label = grh->flow_label;
1628 uverb_attr->sgid_index = grh->sgid_index;
1629 uverb_attr->hop_limit = grh->hop_limit;
1630 uverb_attr->traffic_class = grh->traffic_class;
1631 }
1632 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr);
1633}
1634
1635static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs)
1636{
1637 struct ib_uverbs_query_qp cmd;
1638 struct ib_uverbs_query_qp_resp resp;
1639 struct ib_qp *qp;
1640 struct ib_qp_attr *attr;
1641 struct ib_qp_init_attr *init_attr;
1642 int ret;
1643
1644 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1645 if (ret)
1646 return ret;
1647
1648 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1649 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1650 if (!attr || !init_attr) {
1651 ret = -ENOMEM;
1652 goto out;
1653 }
1654
1655 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1656 if (!qp) {
1657 ret = -EINVAL;
1658 goto out;
1659 }
1660
1661 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1662
1663 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
1664 UVERBS_LOOKUP_READ);
1665
1666 if (ret)
1667 goto out;
1668
1669 memset(&resp, 0, sizeof resp);
1670
1671 resp.qp_state = attr->qp_state;
1672 resp.cur_qp_state = attr->cur_qp_state;
1673 resp.path_mtu = attr->path_mtu;
1674 resp.path_mig_state = attr->path_mig_state;
1675 resp.qkey = attr->qkey;
1676 resp.rq_psn = attr->rq_psn;
1677 resp.sq_psn = attr->sq_psn;
1678 resp.dest_qp_num = attr->dest_qp_num;
1679 resp.qp_access_flags = attr->qp_access_flags;
1680 resp.pkey_index = attr->pkey_index;
1681 resp.alt_pkey_index = attr->alt_pkey_index;
1682 resp.sq_draining = attr->sq_draining;
1683 resp.max_rd_atomic = attr->max_rd_atomic;
1684 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1685 resp.min_rnr_timer = attr->min_rnr_timer;
1686 resp.port_num = attr->port_num;
1687 resp.timeout = attr->timeout;
1688 resp.retry_cnt = attr->retry_cnt;
1689 resp.rnr_retry = attr->rnr_retry;
1690 resp.alt_port_num = attr->alt_port_num;
1691 resp.alt_timeout = attr->alt_timeout;
1692
1693 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr);
1694 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr);
1695
1696 resp.max_send_wr = init_attr->cap.max_send_wr;
1697 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1698 resp.max_send_sge = init_attr->cap.max_send_sge;
1699 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1700 resp.max_inline_data = init_attr->cap.max_inline_data;
1701 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1702
1703 ret = uverbs_response(attrs, &resp, sizeof(resp));
1704
1705out:
1706 kfree(attr);
1707 kfree(init_attr);
1708
1709 return ret;
1710}
1711
1712/* Remove ignored fields set in the attribute mask */
1713static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1714{
1715 switch (qp_type) {
1716 case IB_QPT_XRC_INI:
1717 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1718 case IB_QPT_XRC_TGT:
1719 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1720 IB_QP_RNR_RETRY);
1721 default:
1722 return mask;
1723 }
1724}
1725
1726static void copy_ah_attr_from_uverbs(struct ib_device *dev,
1727 struct rdma_ah_attr *rdma_attr,
1728 struct ib_uverbs_qp_dest *uverb_attr)
1729{
1730 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num);
1731 if (uverb_attr->is_global) {
1732 rdma_ah_set_grh(rdma_attr, NULL,
1733 uverb_attr->flow_label,
1734 uverb_attr->sgid_index,
1735 uverb_attr->hop_limit,
1736 uverb_attr->traffic_class);
1737 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid);
1738 } else {
1739 rdma_ah_set_ah_flags(rdma_attr, 0);
1740 }
1741 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid);
1742 rdma_ah_set_sl(rdma_attr, uverb_attr->sl);
1743 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits);
1744 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate);
1745 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num);
1746 rdma_ah_set_make_grd(rdma_attr, false);
1747}
1748
1749static int modify_qp(struct uverbs_attr_bundle *attrs,
1750 struct ib_uverbs_ex_modify_qp *cmd)
1751{
1752 struct ib_qp_attr *attr;
1753 struct ib_qp *qp;
1754 int ret;
1755
1756 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1757 if (!attr)
1758 return -ENOMEM;
1759
1760 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle,
1761 attrs);
1762 if (!qp) {
1763 ret = -EINVAL;
1764 goto out;
1765 }
1766
1767 if ((cmd->base.attr_mask & IB_QP_PORT) &&
1768 !rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1769 ret = -EINVAL;
1770 goto release_qp;
1771 }
1772
1773 if ((cmd->base.attr_mask & IB_QP_AV)) {
1774 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) {
1775 ret = -EINVAL;
1776 goto release_qp;
1777 }
1778
1779 if (cmd->base.attr_mask & IB_QP_STATE &&
1780 cmd->base.qp_state == IB_QPS_RTR) {
1781 /* We are in INIT->RTR TRANSITION (if we are not,
1782 * this transition will be rejected in subsequent checks).
1783 * In the INIT->RTR transition, we cannot have IB_QP_PORT set,
1784 * but the IB_QP_STATE flag is required.
1785 *
1786 * Since kernel 3.14 (commit dbf727de7440), the uverbs driver,
1787 * when IB_QP_AV is set, has required inclusion of a valid
1788 * port number in the primary AV. (AVs are created and handled
1789 * differently for infiniband and ethernet (RoCE) ports).
1790 *
1791 * Check the port number included in the primary AV against
1792 * the port number in the qp struct, which was set (and saved)
1793 * in the RST->INIT transition.
1794 */
1795 if (cmd->base.dest.port_num != qp->real_qp->port) {
1796 ret = -EINVAL;
1797 goto release_qp;
1798 }
1799 } else {
1800 /* We are in SQD->SQD. (If we are not, this transition will
1801 * be rejected later in the verbs layer checks).
1802 * Check for both IB_QP_PORT and IB_QP_AV, these can be set
1803 * together in the SQD->SQD transition.
1804 *
1805 * If only IP_QP_AV was set, add in IB_QP_PORT as well (the
1806 * verbs layer driver does not track primary port changes
1807 * resulting from path migration. Thus, in SQD, if the primary
1808 * AV is modified, the primary port should also be modified).
1809 *
1810 * Note that in this transition, the IB_QP_STATE flag
1811 * is not allowed.
1812 */
1813 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1814 == (IB_QP_AV | IB_QP_PORT)) &&
1815 cmd->base.port_num != cmd->base.dest.port_num) {
1816 ret = -EINVAL;
1817 goto release_qp;
1818 }
1819 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1820 == IB_QP_AV) {
1821 cmd->base.attr_mask |= IB_QP_PORT;
1822 cmd->base.port_num = cmd->base.dest.port_num;
1823 }
1824 }
1825 }
1826
1827 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) &&
1828 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) ||
1829 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) ||
1830 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) {
1831 ret = -EINVAL;
1832 goto release_qp;
1833 }
1834
1835 if ((cmd->base.attr_mask & IB_QP_CUR_STATE &&
1836 cmd->base.cur_qp_state > IB_QPS_ERR) ||
1837 (cmd->base.attr_mask & IB_QP_STATE &&
1838 cmd->base.qp_state > IB_QPS_ERR)) {
1839 ret = -EINVAL;
1840 goto release_qp;
1841 }
1842
1843 if (cmd->base.attr_mask & IB_QP_STATE)
1844 attr->qp_state = cmd->base.qp_state;
1845 if (cmd->base.attr_mask & IB_QP_CUR_STATE)
1846 attr->cur_qp_state = cmd->base.cur_qp_state;
1847 if (cmd->base.attr_mask & IB_QP_PATH_MTU)
1848 attr->path_mtu = cmd->base.path_mtu;
1849 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE)
1850 attr->path_mig_state = cmd->base.path_mig_state;
1851 if (cmd->base.attr_mask & IB_QP_QKEY) {
1852 if (cmd->base.qkey & IB_QP_SET_QKEY &&
1853 !rdma_nl_get_privileged_qkey()) {
1854 ret = -EPERM;
1855 goto release_qp;
1856 }
1857 attr->qkey = cmd->base.qkey;
1858 }
1859 if (cmd->base.attr_mask & IB_QP_RQ_PSN)
1860 attr->rq_psn = cmd->base.rq_psn;
1861 if (cmd->base.attr_mask & IB_QP_SQ_PSN)
1862 attr->sq_psn = cmd->base.sq_psn;
1863 if (cmd->base.attr_mask & IB_QP_DEST_QPN)
1864 attr->dest_qp_num = cmd->base.dest_qp_num;
1865 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS)
1866 attr->qp_access_flags = cmd->base.qp_access_flags;
1867 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX)
1868 attr->pkey_index = cmd->base.pkey_index;
1869 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
1870 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
1871 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC)
1872 attr->max_rd_atomic = cmd->base.max_rd_atomic;
1873 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
1874 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
1875 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER)
1876 attr->min_rnr_timer = cmd->base.min_rnr_timer;
1877 if (cmd->base.attr_mask & IB_QP_PORT)
1878 attr->port_num = cmd->base.port_num;
1879 if (cmd->base.attr_mask & IB_QP_TIMEOUT)
1880 attr->timeout = cmd->base.timeout;
1881 if (cmd->base.attr_mask & IB_QP_RETRY_CNT)
1882 attr->retry_cnt = cmd->base.retry_cnt;
1883 if (cmd->base.attr_mask & IB_QP_RNR_RETRY)
1884 attr->rnr_retry = cmd->base.rnr_retry;
1885 if (cmd->base.attr_mask & IB_QP_ALT_PATH) {
1886 attr->alt_port_num = cmd->base.alt_port_num;
1887 attr->alt_timeout = cmd->base.alt_timeout;
1888 attr->alt_pkey_index = cmd->base.alt_pkey_index;
1889 }
1890 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT)
1891 attr->rate_limit = cmd->rate_limit;
1892
1893 if (cmd->base.attr_mask & IB_QP_AV)
1894 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,
1895 &cmd->base.dest);
1896
1897 if (cmd->base.attr_mask & IB_QP_ALT_PATH)
1898 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr,
1899 &cmd->base.alt_dest);
1900
1901 ret = ib_modify_qp_with_udata(qp, attr,
1902 modify_qp_mask(qp->qp_type,
1903 cmd->base.attr_mask),
1904 &attrs->driver_udata);
1905
1906release_qp:
1907 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
1908 UVERBS_LOOKUP_READ);
1909out:
1910 kfree(attr);
1911
1912 return ret;
1913}
1914
1915static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs)
1916{
1917 struct ib_uverbs_ex_modify_qp cmd;
1918 int ret;
1919
1920 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base));
1921 if (ret)
1922 return ret;
1923
1924 if (cmd.base.attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
1925 return -EOPNOTSUPP;
1926
1927 return modify_qp(attrs, &cmd);
1928}
1929
1930static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs)
1931{
1932 struct ib_uverbs_ex_modify_qp cmd;
1933 struct ib_uverbs_ex_modify_qp_resp resp = {
1934 .response_length = uverbs_response_length(attrs, sizeof(resp))
1935 };
1936 int ret;
1937
1938 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1939 if (ret)
1940 return ret;
1941
1942 /*
1943 * Last bit is reserved for extending the attr_mask by
1944 * using another field.
1945 */
1946 if (cmd.base.attr_mask & ~(IB_QP_ATTR_STANDARD_BITS | IB_QP_RATE_LIMIT))
1947 return -EOPNOTSUPP;
1948
1949 ret = modify_qp(attrs, &cmd);
1950 if (ret)
1951 return ret;
1952
1953 return uverbs_response(attrs, &resp, sizeof(resp));
1954}
1955
1956static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs)
1957{
1958 struct ib_uverbs_destroy_qp cmd;
1959 struct ib_uverbs_destroy_qp_resp resp;
1960 struct ib_uobject *uobj;
1961 struct ib_uqp_object *obj;
1962 int ret;
1963
1964 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1965 if (ret)
1966 return ret;
1967
1968 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1969 if (IS_ERR(uobj))
1970 return PTR_ERR(uobj);
1971
1972 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
1973 memset(&resp, 0, sizeof(resp));
1974 resp.events_reported = obj->uevent.events_reported;
1975
1976 uobj_put_destroy(uobj);
1977
1978 return uverbs_response(attrs, &resp, sizeof(resp));
1979}
1980
1981static void *alloc_wr(size_t wr_size, __u32 num_sge)
1982{
1983 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof(struct ib_sge))) /
1984 sizeof(struct ib_sge))
1985 return NULL;
1986
1987 return kmalloc(ALIGN(wr_size, sizeof(struct ib_sge)) +
1988 num_sge * sizeof(struct ib_sge),
1989 GFP_KERNEL);
1990}
1991
1992static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs)
1993{
1994 struct ib_uverbs_post_send cmd;
1995 struct ib_uverbs_post_send_resp resp;
1996 struct ib_uverbs_send_wr *user_wr;
1997 struct ib_send_wr *wr = NULL, *last, *next;
1998 const struct ib_send_wr *bad_wr;
1999 struct ib_qp *qp;
2000 int i, sg_ind;
2001 int is_ud;
2002 int ret, ret2;
2003 size_t next_size;
2004 const struct ib_sge __user *sgls;
2005 const void __user *wqes;
2006 struct uverbs_req_iter iter;
2007
2008 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2009 if (ret)
2010 return ret;
2011 wqes = uverbs_request_next_ptr(&iter, size_mul(cmd.wqe_size,
2012 cmd.wr_count));
2013 if (IS_ERR(wqes))
2014 return PTR_ERR(wqes);
2015 sgls = uverbs_request_next_ptr(&iter,
2016 size_mul(cmd.sge_count,
2017 sizeof(struct ib_uverbs_sge)));
2018 if (IS_ERR(sgls))
2019 return PTR_ERR(sgls);
2020 ret = uverbs_request_finish(&iter);
2021 if (ret)
2022 return ret;
2023
2024 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2025 if (!user_wr)
2026 return -ENOMEM;
2027
2028 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2029 if (!qp) {
2030 ret = -EINVAL;
2031 goto out;
2032 }
2033
2034 is_ud = qp->qp_type == IB_QPT_UD;
2035 sg_ind = 0;
2036 last = NULL;
2037 for (i = 0; i < cmd.wr_count; ++i) {
2038 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size,
2039 cmd.wqe_size)) {
2040 ret = -EFAULT;
2041 goto out_put;
2042 }
2043
2044 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2045 ret = -EINVAL;
2046 goto out_put;
2047 }
2048
2049 if (is_ud) {
2050 struct ib_ud_wr *ud;
2051
2052 if (user_wr->opcode != IB_WR_SEND &&
2053 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2054 ret = -EINVAL;
2055 goto out_put;
2056 }
2057
2058 next_size = sizeof(*ud);
2059 ud = alloc_wr(next_size, user_wr->num_sge);
2060 if (!ud) {
2061 ret = -ENOMEM;
2062 goto out_put;
2063 }
2064
2065 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH,
2066 user_wr->wr.ud.ah, attrs);
2067 if (!ud->ah) {
2068 kfree(ud);
2069 ret = -EINVAL;
2070 goto out_put;
2071 }
2072 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2073 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2074
2075 next = &ud->wr;
2076 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2077 user_wr->opcode == IB_WR_RDMA_WRITE ||
2078 user_wr->opcode == IB_WR_RDMA_READ) {
2079 struct ib_rdma_wr *rdma;
2080
2081 next_size = sizeof(*rdma);
2082 rdma = alloc_wr(next_size, user_wr->num_sge);
2083 if (!rdma) {
2084 ret = -ENOMEM;
2085 goto out_put;
2086 }
2087
2088 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2089 rdma->rkey = user_wr->wr.rdma.rkey;
2090
2091 next = &rdma->wr;
2092 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2093 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2094 struct ib_atomic_wr *atomic;
2095
2096 next_size = sizeof(*atomic);
2097 atomic = alloc_wr(next_size, user_wr->num_sge);
2098 if (!atomic) {
2099 ret = -ENOMEM;
2100 goto out_put;
2101 }
2102
2103 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2104 atomic->compare_add = user_wr->wr.atomic.compare_add;
2105 atomic->swap = user_wr->wr.atomic.swap;
2106 atomic->rkey = user_wr->wr.atomic.rkey;
2107
2108 next = &atomic->wr;
2109 } else if (user_wr->opcode == IB_WR_SEND ||
2110 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2111 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2112 next_size = sizeof(*next);
2113 next = alloc_wr(next_size, user_wr->num_sge);
2114 if (!next) {
2115 ret = -ENOMEM;
2116 goto out_put;
2117 }
2118 } else {
2119 ret = -EINVAL;
2120 goto out_put;
2121 }
2122
2123 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2124 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2125 next->ex.imm_data =
2126 (__be32 __force) user_wr->ex.imm_data;
2127 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2128 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2129 }
2130
2131 if (!last)
2132 wr = next;
2133 else
2134 last->next = next;
2135 last = next;
2136
2137 next->next = NULL;
2138 next->wr_id = user_wr->wr_id;
2139 next->num_sge = user_wr->num_sge;
2140 next->opcode = user_wr->opcode;
2141 next->send_flags = user_wr->send_flags;
2142
2143 if (next->num_sge) {
2144 next->sg_list = (void *) next +
2145 ALIGN(next_size, sizeof(struct ib_sge));
2146 if (copy_from_user(next->sg_list, sgls + sg_ind,
2147 next->num_sge *
2148 sizeof(struct ib_sge))) {
2149 ret = -EFAULT;
2150 goto out_put;
2151 }
2152 sg_ind += next->num_sge;
2153 } else
2154 next->sg_list = NULL;
2155 }
2156
2157 resp.bad_wr = 0;
2158 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr);
2159 if (ret)
2160 for (next = wr; next; next = next->next) {
2161 ++resp.bad_wr;
2162 if (next == bad_wr)
2163 break;
2164 }
2165
2166 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2167 if (ret2)
2168 ret = ret2;
2169
2170out_put:
2171 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2172 UVERBS_LOOKUP_READ);
2173
2174 while (wr) {
2175 if (is_ud && ud_wr(wr)->ah)
2176 uobj_put_obj_read(ud_wr(wr)->ah);
2177 next = wr->next;
2178 kfree(wr);
2179 wr = next;
2180 }
2181
2182out:
2183 kfree(user_wr);
2184
2185 return ret;
2186}
2187
2188static struct ib_recv_wr *
2189ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
2190 u32 wqe_size, u32 sge_count)
2191{
2192 struct ib_uverbs_recv_wr *user_wr;
2193 struct ib_recv_wr *wr = NULL, *last, *next;
2194 int sg_ind;
2195 int i;
2196 int ret;
2197 const struct ib_sge __user *sgls;
2198 const void __user *wqes;
2199
2200 if (wqe_size < sizeof(struct ib_uverbs_recv_wr))
2201 return ERR_PTR(-EINVAL);
2202
2203 wqes = uverbs_request_next_ptr(iter, size_mul(wqe_size, wr_count));
2204 if (IS_ERR(wqes))
2205 return ERR_CAST(wqes);
2206 sgls = uverbs_request_next_ptr(iter, size_mul(sge_count,
2207 sizeof(struct ib_uverbs_sge)));
2208 if (IS_ERR(sgls))
2209 return ERR_CAST(sgls);
2210 ret = uverbs_request_finish(iter);
2211 if (ret)
2212 return ERR_PTR(ret);
2213
2214 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2215 if (!user_wr)
2216 return ERR_PTR(-ENOMEM);
2217
2218 sg_ind = 0;
2219 last = NULL;
2220 for (i = 0; i < wr_count; ++i) {
2221 if (copy_from_user(user_wr, wqes + i * wqe_size,
2222 wqe_size)) {
2223 ret = -EFAULT;
2224 goto err;
2225 }
2226
2227 if (user_wr->num_sge + sg_ind > sge_count) {
2228 ret = -EINVAL;
2229 goto err;
2230 }
2231
2232 if (user_wr->num_sge >=
2233 (U32_MAX - ALIGN(sizeof(*next), sizeof(struct ib_sge))) /
2234 sizeof(struct ib_sge)) {
2235 ret = -EINVAL;
2236 goto err;
2237 }
2238
2239 next = kmalloc(ALIGN(sizeof(*next), sizeof(struct ib_sge)) +
2240 user_wr->num_sge * sizeof(struct ib_sge),
2241 GFP_KERNEL);
2242 if (!next) {
2243 ret = -ENOMEM;
2244 goto err;
2245 }
2246
2247 if (!last)
2248 wr = next;
2249 else
2250 last->next = next;
2251 last = next;
2252
2253 next->next = NULL;
2254 next->wr_id = user_wr->wr_id;
2255 next->num_sge = user_wr->num_sge;
2256
2257 if (next->num_sge) {
2258 next->sg_list = (void *)next +
2259 ALIGN(sizeof(*next), sizeof(struct ib_sge));
2260 if (copy_from_user(next->sg_list, sgls + sg_ind,
2261 next->num_sge *
2262 sizeof(struct ib_sge))) {
2263 ret = -EFAULT;
2264 goto err;
2265 }
2266 sg_ind += next->num_sge;
2267 } else
2268 next->sg_list = NULL;
2269 }
2270
2271 kfree(user_wr);
2272 return wr;
2273
2274err:
2275 kfree(user_wr);
2276
2277 while (wr) {
2278 next = wr->next;
2279 kfree(wr);
2280 wr = next;
2281 }
2282
2283 return ERR_PTR(ret);
2284}
2285
2286static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs)
2287{
2288 struct ib_uverbs_post_recv cmd;
2289 struct ib_uverbs_post_recv_resp resp;
2290 struct ib_recv_wr *wr, *next;
2291 const struct ib_recv_wr *bad_wr;
2292 struct ib_qp *qp;
2293 int ret, ret2;
2294 struct uverbs_req_iter iter;
2295
2296 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2297 if (ret)
2298 return ret;
2299
2300 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2301 cmd.sge_count);
2302 if (IS_ERR(wr))
2303 return PTR_ERR(wr);
2304
2305 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2306 if (!qp) {
2307 ret = -EINVAL;
2308 goto out;
2309 }
2310
2311 resp.bad_wr = 0;
2312 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr);
2313
2314 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2315 UVERBS_LOOKUP_READ);
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;
2327out:
2328 while (wr) {
2329 next = wr->next;
2330 kfree(wr);
2331 wr = next;
2332 }
2333
2334 return ret;
2335}
2336
2337static 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 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
2366 UVERBS_LOOKUP_READ);
2367
2368 if (ret)
2369 for (next = wr; next; next = next->next) {
2370 ++resp.bad_wr;
2371 if (next == bad_wr)
2372 break;
2373 }
2374
2375 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2376 if (ret2)
2377 ret = ret2;
2378
2379out:
2380 while (wr) {
2381 next = wr->next;
2382 kfree(wr);
2383 wr = next;
2384 }
2385
2386 return ret;
2387}
2388
2389static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs)
2390{
2391 struct ib_uverbs_create_ah cmd;
2392 struct ib_uverbs_create_ah_resp resp;
2393 struct ib_uobject *uobj;
2394 struct ib_pd *pd;
2395 struct ib_ah *ah;
2396 struct rdma_ah_attr attr = {};
2397 int ret;
2398 struct ib_device *ib_dev;
2399
2400 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2401 if (ret)
2402 return ret;
2403
2404 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev);
2405 if (IS_ERR(uobj))
2406 return PTR_ERR(uobj);
2407
2408 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) {
2409 ret = -EINVAL;
2410 goto err;
2411 }
2412
2413 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2414 if (!pd) {
2415 ret = -EINVAL;
2416 goto err;
2417 }
2418
2419 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2420 rdma_ah_set_make_grd(&attr, false);
2421 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2422 rdma_ah_set_sl(&attr, cmd.attr.sl);
2423 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2424 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2425 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2426
2427 if (cmd.attr.is_global) {
2428 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2429 cmd.attr.grh.sgid_index,
2430 cmd.attr.grh.hop_limit,
2431 cmd.attr.grh.traffic_class);
2432 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2433 } else {
2434 rdma_ah_set_ah_flags(&attr, 0);
2435 }
2436
2437 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata);
2438 if (IS_ERR(ah)) {
2439 ret = PTR_ERR(ah);
2440 goto err_put;
2441 }
2442
2443 ah->uobject = uobj;
2444 uobj->user_handle = cmd.user_handle;
2445 uobj->object = ah;
2446 uobj_put_obj_read(pd);
2447 uobj_finalize_uobj_create(uobj, attrs);
2448
2449 resp.ah_handle = uobj->id;
2450 return uverbs_response(attrs, &resp, sizeof(resp));
2451
2452err_put:
2453 uobj_put_obj_read(pd);
2454err:
2455 uobj_alloc_abort(uobj, attrs);
2456 return ret;
2457}
2458
2459static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs)
2460{
2461 struct ib_uverbs_destroy_ah cmd;
2462 int ret;
2463
2464 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2465 if (ret)
2466 return ret;
2467
2468 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs);
2469}
2470
2471static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs)
2472{
2473 struct ib_uverbs_attach_mcast cmd;
2474 struct ib_qp *qp;
2475 struct ib_uqp_object *obj;
2476 struct ib_uverbs_mcast_entry *mcast;
2477 int ret;
2478
2479 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2480 if (ret)
2481 return ret;
2482
2483 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2484 if (!qp)
2485 return -EINVAL;
2486
2487 obj = qp->uobject;
2488
2489 mutex_lock(&obj->mcast_lock);
2490 list_for_each_entry(mcast, &obj->mcast_list, list)
2491 if (cmd.mlid == mcast->lid &&
2492 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2493 ret = 0;
2494 goto out_put;
2495 }
2496
2497 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2498 if (!mcast) {
2499 ret = -ENOMEM;
2500 goto out_put;
2501 }
2502
2503 mcast->lid = cmd.mlid;
2504 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2505
2506 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2507 if (!ret)
2508 list_add_tail(&mcast->list, &obj->mcast_list);
2509 else
2510 kfree(mcast);
2511
2512out_put:
2513 mutex_unlock(&obj->mcast_lock);
2514 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2515 UVERBS_LOOKUP_READ);
2516
2517 return ret;
2518}
2519
2520static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs)
2521{
2522 struct ib_uverbs_detach_mcast cmd;
2523 struct ib_uqp_object *obj;
2524 struct ib_qp *qp;
2525 struct ib_uverbs_mcast_entry *mcast;
2526 int ret;
2527 bool found = false;
2528
2529 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2530 if (ret)
2531 return ret;
2532
2533 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2534 if (!qp)
2535 return -EINVAL;
2536
2537 obj = qp->uobject;
2538 mutex_lock(&obj->mcast_lock);
2539
2540 list_for_each_entry(mcast, &obj->mcast_list, list)
2541 if (cmd.mlid == mcast->lid &&
2542 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2543 list_del(&mcast->list);
2544 kfree(mcast);
2545 found = true;
2546 break;
2547 }
2548
2549 if (!found) {
2550 ret = -EINVAL;
2551 goto out_put;
2552 }
2553
2554 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2555
2556out_put:
2557 mutex_unlock(&obj->mcast_lock);
2558 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2559 UVERBS_LOOKUP_READ);
2560 return ret;
2561}
2562
2563struct ib_uflow_resources *flow_resources_alloc(size_t num_specs)
2564{
2565 struct ib_uflow_resources *resources;
2566
2567 resources = kzalloc(sizeof(*resources), GFP_KERNEL);
2568
2569 if (!resources)
2570 return NULL;
2571
2572 if (!num_specs)
2573 goto out;
2574
2575 resources->counters =
2576 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
2577 resources->collection =
2578 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL);
2579
2580 if (!resources->counters || !resources->collection)
2581 goto err;
2582
2583out:
2584 resources->max = num_specs;
2585 return resources;
2586
2587err:
2588 kfree(resources->counters);
2589 kfree(resources);
2590
2591 return NULL;
2592}
2593EXPORT_SYMBOL(flow_resources_alloc);
2594
2595void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
2596{
2597 unsigned int i;
2598
2599 if (!uflow_res)
2600 return;
2601
2602 for (i = 0; i < uflow_res->collection_num; i++)
2603 atomic_dec(&uflow_res->collection[i]->usecnt);
2604
2605 for (i = 0; i < uflow_res->counters_num; i++)
2606 atomic_dec(&uflow_res->counters[i]->usecnt);
2607
2608 kfree(uflow_res->collection);
2609 kfree(uflow_res->counters);
2610 kfree(uflow_res);
2611}
2612EXPORT_SYMBOL(ib_uverbs_flow_resources_free);
2613
2614void flow_resources_add(struct ib_uflow_resources *uflow_res,
2615 enum ib_flow_spec_type type,
2616 void *ibobj)
2617{
2618 WARN_ON(uflow_res->num >= uflow_res->max);
2619
2620 switch (type) {
2621 case IB_FLOW_SPEC_ACTION_HANDLE:
2622 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt);
2623 uflow_res->collection[uflow_res->collection_num++] =
2624 (struct ib_flow_action *)ibobj;
2625 break;
2626 case IB_FLOW_SPEC_ACTION_COUNT:
2627 atomic_inc(&((struct ib_counters *)ibobj)->usecnt);
2628 uflow_res->counters[uflow_res->counters_num++] =
2629 (struct ib_counters *)ibobj;
2630 break;
2631 default:
2632 WARN_ON(1);
2633 }
2634
2635 uflow_res->num++;
2636}
2637EXPORT_SYMBOL(flow_resources_add);
2638
2639static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
2640 struct ib_uverbs_flow_spec *kern_spec,
2641 union ib_flow_spec *ib_spec,
2642 struct ib_uflow_resources *uflow_res)
2643{
2644 ib_spec->type = kern_spec->type;
2645 switch (ib_spec->type) {
2646 case IB_FLOW_SPEC_ACTION_TAG:
2647 if (kern_spec->flow_tag.size !=
2648 sizeof(struct ib_uverbs_flow_spec_action_tag))
2649 return -EINVAL;
2650
2651 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2652 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2653 break;
2654 case IB_FLOW_SPEC_ACTION_DROP:
2655 if (kern_spec->drop.size !=
2656 sizeof(struct ib_uverbs_flow_spec_action_drop))
2657 return -EINVAL;
2658
2659 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2660 break;
2661 case IB_FLOW_SPEC_ACTION_HANDLE:
2662 if (kern_spec->action.size !=
2663 sizeof(struct ib_uverbs_flow_spec_action_handle))
2664 return -EOPNOTSUPP;
2665 ib_spec->action.act = uobj_get_obj_read(flow_action,
2666 UVERBS_OBJECT_FLOW_ACTION,
2667 kern_spec->action.handle,
2668 attrs);
2669 if (!ib_spec->action.act)
2670 return -EINVAL;
2671 ib_spec->action.size =
2672 sizeof(struct ib_flow_spec_action_handle);
2673 flow_resources_add(uflow_res,
2674 IB_FLOW_SPEC_ACTION_HANDLE,
2675 ib_spec->action.act);
2676 uobj_put_obj_read(ib_spec->action.act);
2677 break;
2678 case IB_FLOW_SPEC_ACTION_COUNT:
2679 if (kern_spec->flow_count.size !=
2680 sizeof(struct ib_uverbs_flow_spec_action_count))
2681 return -EINVAL;
2682 ib_spec->flow_count.counters =
2683 uobj_get_obj_read(counters,
2684 UVERBS_OBJECT_COUNTERS,
2685 kern_spec->flow_count.handle,
2686 attrs);
2687 if (!ib_spec->flow_count.counters)
2688 return -EINVAL;
2689 ib_spec->flow_count.size =
2690 sizeof(struct ib_flow_spec_action_count);
2691 flow_resources_add(uflow_res,
2692 IB_FLOW_SPEC_ACTION_COUNT,
2693 ib_spec->flow_count.counters);
2694 uobj_put_obj_read(ib_spec->flow_count.counters);
2695 break;
2696 default:
2697 return -EINVAL;
2698 }
2699 return 0;
2700}
2701
2702static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
2703 u16 ib_real_filter_sz)
2704{
2705 /*
2706 * User space filter structures must be 64 bit aligned, otherwise this
2707 * may pass, but we won't handle additional new attributes.
2708 */
2709
2710 if (kern_filter_size > ib_real_filter_sz) {
2711 if (memchr_inv(kern_spec_filter +
2712 ib_real_filter_sz, 0,
2713 kern_filter_size - ib_real_filter_sz))
2714 return -EINVAL;
2715 return ib_real_filter_sz;
2716 }
2717 return kern_filter_size;
2718}
2719
2720int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
2721 const void *kern_spec_mask,
2722 const void *kern_spec_val,
2723 size_t kern_filter_sz,
2724 union ib_flow_spec *ib_spec)
2725{
2726 ssize_t actual_filter_sz;
2727 ssize_t ib_filter_sz;
2728
2729 /* User flow spec size must be aligned to 4 bytes */
2730 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2731 return -EINVAL;
2732
2733 ib_spec->type = type;
2734
2735 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2736 return -EINVAL;
2737
2738 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2739 case IB_FLOW_SPEC_ETH:
2740 ib_filter_sz = sizeof(struct ib_flow_eth_filter);
2741 actual_filter_sz = spec_filter_size(kern_spec_mask,
2742 kern_filter_sz,
2743 ib_filter_sz);
2744 if (actual_filter_sz <= 0)
2745 return -EINVAL;
2746 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2747 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2748 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2749 break;
2750 case IB_FLOW_SPEC_IPV4:
2751 ib_filter_sz = sizeof(struct ib_flow_ipv4_filter);
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_ipv4);
2758 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2759 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2760 break;
2761 case IB_FLOW_SPEC_IPV6:
2762 ib_filter_sz = sizeof(struct ib_flow_ipv6_filter);
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_ipv6);
2769 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2770 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2771
2772 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2773 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2774 return -EINVAL;
2775 break;
2776 case IB_FLOW_SPEC_TCP:
2777 case IB_FLOW_SPEC_UDP:
2778 ib_filter_sz = sizeof(struct ib_flow_tcp_udp_filter);
2779 actual_filter_sz = spec_filter_size(kern_spec_mask,
2780 kern_filter_sz,
2781 ib_filter_sz);
2782 if (actual_filter_sz <= 0)
2783 return -EINVAL;
2784 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2785 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2786 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2787 break;
2788 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2789 ib_filter_sz = sizeof(struct ib_flow_tunnel_filter);
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->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2796 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2797 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2798
2799 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2800 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2801 return -EINVAL;
2802 break;
2803 case IB_FLOW_SPEC_ESP:
2804 ib_filter_sz = sizeof(struct ib_flow_esp_filter);
2805 actual_filter_sz = spec_filter_size(kern_spec_mask,
2806 kern_filter_sz,
2807 ib_filter_sz);
2808 if (actual_filter_sz <= 0)
2809 return -EINVAL;
2810 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp);
2811 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz);
2812 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz);
2813 break;
2814 case IB_FLOW_SPEC_GRE:
2815 ib_filter_sz = sizeof(struct ib_flow_gre_filter);
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->gre.size = sizeof(struct ib_flow_spec_gre);
2822 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz);
2823 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz);
2824 break;
2825 case IB_FLOW_SPEC_MPLS:
2826 ib_filter_sz = sizeof(struct ib_flow_mpls_filter);
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->mpls.size = sizeof(struct ib_flow_spec_mpls);
2833 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz);
2834 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz);
2835 break;
2836 default:
2837 return -EINVAL;
2838 }
2839 return 0;
2840}
2841
2842static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2843 union ib_flow_spec *ib_spec)
2844{
2845 size_t kern_filter_sz;
2846 void *kern_spec_mask;
2847 void *kern_spec_val;
2848
2849 if (check_sub_overflow((size_t)kern_spec->hdr.size,
2850 sizeof(struct ib_uverbs_flow_spec_hdr),
2851 &kern_filter_sz))
2852 return -EINVAL;
2853
2854 kern_filter_sz /= 2;
2855
2856 kern_spec_val = (void *)kern_spec +
2857 sizeof(struct ib_uverbs_flow_spec_hdr);
2858 kern_spec_mask = kern_spec_val + kern_filter_sz;
2859
2860 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
2861 kern_spec_mask,
2862 kern_spec_val,
2863 kern_filter_sz, ib_spec);
2864}
2865
2866static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs,
2867 struct ib_uverbs_flow_spec *kern_spec,
2868 union ib_flow_spec *ib_spec,
2869 struct ib_uflow_resources *uflow_res)
2870{
2871 if (kern_spec->reserved)
2872 return -EINVAL;
2873
2874 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2875 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec,
2876 uflow_res);
2877 else
2878 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2879}
2880
2881static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs)
2882{
2883 struct ib_uverbs_ex_create_wq cmd;
2884 struct ib_uverbs_ex_create_wq_resp resp = {};
2885 struct ib_uwq_object *obj;
2886 int err = 0;
2887 struct ib_cq *cq;
2888 struct ib_pd *pd;
2889 struct ib_wq *wq;
2890 struct ib_wq_init_attr wq_init_attr = {};
2891 struct ib_device *ib_dev;
2892
2893 err = uverbs_request(attrs, &cmd, sizeof(cmd));
2894 if (err)
2895 return err;
2896
2897 if (cmd.comp_mask)
2898 return -EOPNOTSUPP;
2899
2900 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs,
2901 &ib_dev);
2902 if (IS_ERR(obj))
2903 return PTR_ERR(obj);
2904
2905 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2906 if (!pd) {
2907 err = -EINVAL;
2908 goto err_uobj;
2909 }
2910
2911 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
2912 if (!cq) {
2913 err = -EINVAL;
2914 goto err_put_pd;
2915 }
2916
2917 wq_init_attr.cq = cq;
2918 wq_init_attr.max_sge = cmd.max_sge;
2919 wq_init_attr.max_wr = cmd.max_wr;
2920 wq_init_attr.wq_type = cmd.wq_type;
2921 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2922 wq_init_attr.create_flags = cmd.create_flags;
2923 INIT_LIST_HEAD(&obj->uevent.event_list);
2924 obj->uevent.uobject.user_handle = cmd.user_handle;
2925
2926 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata);
2927 if (IS_ERR(wq)) {
2928 err = PTR_ERR(wq);
2929 goto err_put_cq;
2930 }
2931
2932 wq->uobject = obj;
2933 obj->uevent.uobject.object = wq;
2934 wq->wq_type = wq_init_attr.wq_type;
2935 wq->cq = cq;
2936 wq->pd = pd;
2937 wq->device = pd->device;
2938 atomic_set(&wq->usecnt, 0);
2939 atomic_inc(&pd->usecnt);
2940 atomic_inc(&cq->usecnt);
2941 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
2942 if (obj->uevent.event_file)
2943 uverbs_uobject_get(&obj->uevent.event_file->uobj);
2944
2945 uobj_put_obj_read(pd);
2946 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2947 UVERBS_LOOKUP_READ);
2948 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
2949
2950 resp.wq_handle = obj->uevent.uobject.id;
2951 resp.max_sge = wq_init_attr.max_sge;
2952 resp.max_wr = wq_init_attr.max_wr;
2953 resp.wqn = wq->wq_num;
2954 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2955 return uverbs_response(attrs, &resp, sizeof(resp));
2956
2957err_put_cq:
2958 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2959 UVERBS_LOOKUP_READ);
2960err_put_pd:
2961 uobj_put_obj_read(pd);
2962err_uobj:
2963 uobj_alloc_abort(&obj->uevent.uobject, attrs);
2964
2965 return err;
2966}
2967
2968static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs)
2969{
2970 struct ib_uverbs_ex_destroy_wq cmd;
2971 struct ib_uverbs_ex_destroy_wq_resp resp = {};
2972 struct ib_uobject *uobj;
2973 struct ib_uwq_object *obj;
2974 int ret;
2975
2976 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2977 if (ret)
2978 return ret;
2979
2980 if (cmd.comp_mask)
2981 return -EOPNOTSUPP;
2982
2983 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2984 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
2985 if (IS_ERR(uobj))
2986 return PTR_ERR(uobj);
2987
2988 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
2989 resp.events_reported = obj->uevent.events_reported;
2990
2991 uobj_put_destroy(uobj);
2992
2993 return uverbs_response(attrs, &resp, sizeof(resp));
2994}
2995
2996static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs)
2997{
2998 struct ib_uverbs_ex_modify_wq cmd;
2999 struct ib_wq *wq;
3000 struct ib_wq_attr wq_attr = {};
3001 int ret;
3002
3003 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3004 if (ret)
3005 return ret;
3006
3007 if (!cmd.attr_mask)
3008 return -EINVAL;
3009
3010 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3011 return -EINVAL;
3012
3013 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3014 if (!wq)
3015 return -EINVAL;
3016
3017 if (cmd.attr_mask & IB_WQ_FLAGS) {
3018 wq_attr.flags = cmd.flags;
3019 wq_attr.flags_mask = cmd.flags_mask;
3020 }
3021
3022 if (cmd.attr_mask & IB_WQ_CUR_STATE) {
3023 if (cmd.curr_wq_state > IB_WQS_ERR)
3024 return -EINVAL;
3025
3026 wq_attr.curr_wq_state = cmd.curr_wq_state;
3027 } else {
3028 wq_attr.curr_wq_state = wq->state;
3029 }
3030
3031 if (cmd.attr_mask & IB_WQ_STATE) {
3032 if (cmd.wq_state > IB_WQS_ERR)
3033 return -EINVAL;
3034
3035 wq_attr.wq_state = cmd.wq_state;
3036 } else {
3037 wq_attr.wq_state = wq_attr.curr_wq_state;
3038 }
3039
3040 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask,
3041 &attrs->driver_udata);
3042 rdma_lookup_put_uobject(&wq->uobject->uevent.uobject,
3043 UVERBS_LOOKUP_READ);
3044 return ret;
3045}
3046
3047static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3048{
3049 struct ib_uverbs_ex_create_rwq_ind_table cmd;
3050 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3051 struct ib_uobject *uobj;
3052 int err;
3053 struct ib_rwq_ind_table_init_attr init_attr = {};
3054 struct ib_rwq_ind_table *rwq_ind_tbl;
3055 struct ib_wq **wqs = NULL;
3056 u32 *wqs_handles = NULL;
3057 struct ib_wq *wq = NULL;
3058 int i, num_read_wqs;
3059 u32 num_wq_handles;
3060 struct uverbs_req_iter iter;
3061 struct ib_device *ib_dev;
3062
3063 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3064 if (err)
3065 return err;
3066
3067 if (cmd.comp_mask)
3068 return -EOPNOTSUPP;
3069
3070 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3071 return -EINVAL;
3072
3073 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3074 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3075 GFP_KERNEL);
3076 if (!wqs_handles)
3077 return -ENOMEM;
3078
3079 err = uverbs_request_next(&iter, wqs_handles,
3080 num_wq_handles * sizeof(__u32));
3081 if (err)
3082 goto err_free;
3083
3084 err = uverbs_request_finish(&iter);
3085 if (err)
3086 goto err_free;
3087
3088 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3089 if (!wqs) {
3090 err = -ENOMEM;
3091 goto err_free;
3092 }
3093
3094 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3095 num_read_wqs++) {
3096 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ,
3097 wqs_handles[num_read_wqs], attrs);
3098 if (!wq) {
3099 err = -EINVAL;
3100 goto put_wqs;
3101 }
3102
3103 wqs[num_read_wqs] = wq;
3104 atomic_inc(&wqs[num_read_wqs]->usecnt);
3105 }
3106
3107 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev);
3108 if (IS_ERR(uobj)) {
3109 err = PTR_ERR(uobj);
3110 goto put_wqs;
3111 }
3112
3113 rwq_ind_tbl = rdma_zalloc_drv_obj(ib_dev, ib_rwq_ind_table);
3114 if (!rwq_ind_tbl) {
3115 err = -ENOMEM;
3116 goto err_uobj;
3117 }
3118
3119 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3120 init_attr.ind_tbl = wqs;
3121
3122 rwq_ind_tbl->ind_tbl = wqs;
3123 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3124 rwq_ind_tbl->uobject = uobj;
3125 uobj->object = rwq_ind_tbl;
3126 rwq_ind_tbl->device = ib_dev;
3127 atomic_set(&rwq_ind_tbl->usecnt, 0);
3128
3129 err = ib_dev->ops.create_rwq_ind_table(rwq_ind_tbl, &init_attr,
3130 &attrs->driver_udata);
3131 if (err)
3132 goto err_create;
3133
3134 for (i = 0; i < num_wq_handles; i++)
3135 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3136 UVERBS_LOOKUP_READ);
3137 kfree(wqs_handles);
3138 uobj_finalize_uobj_create(uobj, attrs);
3139
3140 resp.ind_tbl_handle = uobj->id;
3141 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3142 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3143 return uverbs_response(attrs, &resp, sizeof(resp));
3144
3145err_create:
3146 kfree(rwq_ind_tbl);
3147err_uobj:
3148 uobj_alloc_abort(uobj, attrs);
3149put_wqs:
3150 for (i = 0; i < num_read_wqs; i++) {
3151 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3152 UVERBS_LOOKUP_READ);
3153 atomic_dec(&wqs[i]->usecnt);
3154 }
3155err_free:
3156 kfree(wqs_handles);
3157 kfree(wqs);
3158 return err;
3159}
3160
3161static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3162{
3163 struct ib_uverbs_ex_destroy_rwq_ind_table cmd;
3164 int ret;
3165
3166 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3167 if (ret)
3168 return ret;
3169
3170 if (cmd.comp_mask)
3171 return -EOPNOTSUPP;
3172
3173 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL,
3174 cmd.ind_tbl_handle, attrs);
3175}
3176
3177static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs)
3178{
3179 struct ib_uverbs_create_flow cmd;
3180 struct ib_uverbs_create_flow_resp resp = {};
3181 struct ib_uobject *uobj;
3182 struct ib_flow *flow_id;
3183 struct ib_uverbs_flow_attr *kern_flow_attr;
3184 struct ib_flow_attr *flow_attr;
3185 struct ib_qp *qp;
3186 struct ib_uflow_resources *uflow_res;
3187 struct ib_uverbs_flow_spec_hdr *kern_spec;
3188 struct uverbs_req_iter iter;
3189 int err;
3190 void *ib_spec;
3191 int i;
3192 struct ib_device *ib_dev;
3193
3194 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3195 if (err)
3196 return err;
3197
3198 if (cmd.comp_mask)
3199 return -EINVAL;
3200
3201 if (!capable(CAP_NET_RAW))
3202 return -EPERM;
3203
3204 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3205 return -EINVAL;
3206
3207 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3208 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3209 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3210 return -EINVAL;
3211
3212 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3213 return -EINVAL;
3214
3215 if (cmd.flow_attr.size >
3216 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3217 return -EINVAL;
3218
3219 if (cmd.flow_attr.reserved[0] ||
3220 cmd.flow_attr.reserved[1])
3221 return -EINVAL;
3222
3223 if (cmd.flow_attr.num_of_specs) {
3224 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3225 GFP_KERNEL);
3226 if (!kern_flow_attr)
3227 return -ENOMEM;
3228
3229 *kern_flow_attr = cmd.flow_attr;
3230 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs,
3231 cmd.flow_attr.size);
3232 if (err)
3233 goto err_free_attr;
3234 } else {
3235 kern_flow_attr = &cmd.flow_attr;
3236 }
3237
3238 err = uverbs_request_finish(&iter);
3239 if (err)
3240 goto err_free_attr;
3241
3242 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev);
3243 if (IS_ERR(uobj)) {
3244 err = PTR_ERR(uobj);
3245 goto err_free_attr;
3246 }
3247
3248 if (!rdma_is_port_valid(uobj->context->device, cmd.flow_attr.port)) {
3249 err = -EINVAL;
3250 goto err_uobj;
3251 }
3252
3253 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
3254 if (!qp) {
3255 err = -EINVAL;
3256 goto err_uobj;
3257 }
3258
3259 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) {
3260 err = -EINVAL;
3261 goto err_put;
3262 }
3263
3264 flow_attr = kzalloc(struct_size(flow_attr, flows,
3265 cmd.flow_attr.num_of_specs), GFP_KERNEL);
3266 if (!flow_attr) {
3267 err = -ENOMEM;
3268 goto err_put;
3269 }
3270 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs);
3271 if (!uflow_res) {
3272 err = -ENOMEM;
3273 goto err_free_flow_attr;
3274 }
3275
3276 flow_attr->type = kern_flow_attr->type;
3277 flow_attr->priority = kern_flow_attr->priority;
3278 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3279 flow_attr->port = kern_flow_attr->port;
3280 flow_attr->flags = kern_flow_attr->flags;
3281 flow_attr->size = sizeof(*flow_attr);
3282
3283 kern_spec = kern_flow_attr->flow_specs;
3284 ib_spec = flow_attr + 1;
3285 for (i = 0; i < flow_attr->num_of_specs &&
3286 cmd.flow_attr.size >= sizeof(*kern_spec) &&
3287 cmd.flow_attr.size >= kern_spec->size;
3288 i++) {
3289 err = kern_spec_to_ib_spec(
3290 attrs, (struct ib_uverbs_flow_spec *)kern_spec,
3291 ib_spec, uflow_res);
3292 if (err)
3293 goto err_free;
3294
3295 flow_attr->size +=
3296 ((union ib_flow_spec *) ib_spec)->size;
3297 cmd.flow_attr.size -= kern_spec->size;
3298 kern_spec = ((void *)kern_spec) + kern_spec->size;
3299 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3300 }
3301 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3302 pr_warn("create flow failed, flow %d: %u bytes left from uverb cmd\n",
3303 i, cmd.flow_attr.size);
3304 err = -EINVAL;
3305 goto err_free;
3306 }
3307
3308 flow_id = qp->device->ops.create_flow(qp, flow_attr,
3309 &attrs->driver_udata);
3310
3311 if (IS_ERR(flow_id)) {
3312 err = PTR_ERR(flow_id);
3313 goto err_free;
3314 }
3315
3316 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res);
3317
3318 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3319 UVERBS_LOOKUP_READ);
3320 kfree(flow_attr);
3321
3322 if (cmd.flow_attr.num_of_specs)
3323 kfree(kern_flow_attr);
3324 uobj_finalize_uobj_create(uobj, attrs);
3325
3326 resp.flow_handle = uobj->id;
3327 return uverbs_response(attrs, &resp, sizeof(resp));
3328
3329err_free:
3330 ib_uverbs_flow_resources_free(uflow_res);
3331err_free_flow_attr:
3332 kfree(flow_attr);
3333err_put:
3334 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3335 UVERBS_LOOKUP_READ);
3336err_uobj:
3337 uobj_alloc_abort(uobj, attrs);
3338err_free_attr:
3339 if (cmd.flow_attr.num_of_specs)
3340 kfree(kern_flow_attr);
3341 return err;
3342}
3343
3344static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs)
3345{
3346 struct ib_uverbs_destroy_flow cmd;
3347 int ret;
3348
3349 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3350 if (ret)
3351 return ret;
3352
3353 if (cmd.comp_mask)
3354 return -EINVAL;
3355
3356 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs);
3357}
3358
3359static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs,
3360 struct ib_uverbs_create_xsrq *cmd,
3361 struct ib_udata *udata)
3362{
3363 struct ib_uverbs_create_srq_resp resp = {};
3364 struct ib_usrq_object *obj;
3365 struct ib_pd *pd;
3366 struct ib_srq *srq;
3367 struct ib_srq_init_attr attr;
3368 int ret;
3369 struct ib_uobject *xrcd_uobj;
3370 struct ib_device *ib_dev;
3371
3372 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs,
3373 &ib_dev);
3374 if (IS_ERR(obj))
3375 return PTR_ERR(obj);
3376
3377 if (cmd->srq_type == IB_SRQT_TM)
3378 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
3379
3380 if (cmd->srq_type == IB_SRQT_XRC) {
3381 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle,
3382 attrs);
3383 if (IS_ERR(xrcd_uobj)) {
3384 ret = -EINVAL;
3385 goto err;
3386 }
3387
3388 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3389 if (!attr.ext.xrc.xrcd) {
3390 ret = -EINVAL;
3391 goto err_put_xrcd;
3392 }
3393
3394 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3395 atomic_inc(&obj->uxrcd->refcnt);
3396 }
3397
3398 if (ib_srq_has_cq(cmd->srq_type)) {
3399 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
3400 cmd->cq_handle, attrs);
3401 if (!attr.ext.cq) {
3402 ret = -EINVAL;
3403 goto err_put_xrcd;
3404 }
3405 }
3406
3407 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs);
3408 if (!pd) {
3409 ret = -EINVAL;
3410 goto err_put_cq;
3411 }
3412
3413 attr.event_handler = ib_uverbs_srq_event_handler;
3414 attr.srq_type = cmd->srq_type;
3415 attr.attr.max_wr = cmd->max_wr;
3416 attr.attr.max_sge = cmd->max_sge;
3417 attr.attr.srq_limit = cmd->srq_limit;
3418
3419 INIT_LIST_HEAD(&obj->uevent.event_list);
3420 obj->uevent.uobject.user_handle = cmd->user_handle;
3421
3422 srq = ib_create_srq_user(pd, &attr, obj, udata);
3423 if (IS_ERR(srq)) {
3424 ret = PTR_ERR(srq);
3425 goto err_put_pd;
3426 }
3427
3428 obj->uevent.uobject.object = srq;
3429 obj->uevent.uobject.user_handle = cmd->user_handle;
3430 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
3431 if (obj->uevent.event_file)
3432 uverbs_uobject_get(&obj->uevent.event_file->uobj);
3433
3434 if (cmd->srq_type == IB_SRQT_XRC)
3435 resp.srqn = srq->ext.xrc.srq_num;
3436
3437 if (cmd->srq_type == IB_SRQT_XRC)
3438 uobj_put_read(xrcd_uobj);
3439
3440 if (ib_srq_has_cq(cmd->srq_type))
3441 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3442 UVERBS_LOOKUP_READ);
3443
3444 uobj_put_obj_read(pd);
3445 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
3446
3447 resp.srq_handle = obj->uevent.uobject.id;
3448 resp.max_wr = attr.attr.max_wr;
3449 resp.max_sge = attr.attr.max_sge;
3450 return uverbs_response(attrs, &resp, sizeof(resp));
3451
3452err_put_pd:
3453 uobj_put_obj_read(pd);
3454err_put_cq:
3455 if (ib_srq_has_cq(cmd->srq_type))
3456 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3457 UVERBS_LOOKUP_READ);
3458
3459err_put_xrcd:
3460 if (cmd->srq_type == IB_SRQT_XRC) {
3461 atomic_dec(&obj->uxrcd->refcnt);
3462 uobj_put_read(xrcd_uobj);
3463 }
3464
3465err:
3466 uobj_alloc_abort(&obj->uevent.uobject, attrs);
3467 return ret;
3468}
3469
3470static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs)
3471{
3472 struct ib_uverbs_create_srq cmd;
3473 struct ib_uverbs_create_xsrq xcmd;
3474 int ret;
3475
3476 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3477 if (ret)
3478 return ret;
3479
3480 memset(&xcmd, 0, sizeof(xcmd));
3481 xcmd.response = cmd.response;
3482 xcmd.user_handle = cmd.user_handle;
3483 xcmd.srq_type = IB_SRQT_BASIC;
3484 xcmd.pd_handle = cmd.pd_handle;
3485 xcmd.max_wr = cmd.max_wr;
3486 xcmd.max_sge = cmd.max_sge;
3487 xcmd.srq_limit = cmd.srq_limit;
3488
3489 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata);
3490}
3491
3492static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs)
3493{
3494 struct ib_uverbs_create_xsrq cmd;
3495 int ret;
3496
3497 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3498 if (ret)
3499 return ret;
3500
3501 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata);
3502}
3503
3504static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs)
3505{
3506 struct ib_uverbs_modify_srq cmd;
3507 struct ib_srq *srq;
3508 struct ib_srq_attr attr;
3509 int ret;
3510
3511 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3512 if (ret)
3513 return ret;
3514
3515 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3516 if (!srq)
3517 return -EINVAL;
3518
3519 attr.max_wr = cmd.max_wr;
3520 attr.srq_limit = cmd.srq_limit;
3521
3522 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask,
3523 &attrs->driver_udata);
3524
3525 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3526 UVERBS_LOOKUP_READ);
3527
3528 return ret;
3529}
3530
3531static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs)
3532{
3533 struct ib_uverbs_query_srq cmd;
3534 struct ib_uverbs_query_srq_resp resp;
3535 struct ib_srq_attr attr;
3536 struct ib_srq *srq;
3537 int ret;
3538
3539 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3540 if (ret)
3541 return ret;
3542
3543 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3544 if (!srq)
3545 return -EINVAL;
3546
3547 ret = ib_query_srq(srq, &attr);
3548
3549 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3550 UVERBS_LOOKUP_READ);
3551
3552 if (ret)
3553 return ret;
3554
3555 memset(&resp, 0, sizeof resp);
3556
3557 resp.max_wr = attr.max_wr;
3558 resp.max_sge = attr.max_sge;
3559 resp.srq_limit = attr.srq_limit;
3560
3561 return uverbs_response(attrs, &resp, sizeof(resp));
3562}
3563
3564static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs)
3565{
3566 struct ib_uverbs_destroy_srq cmd;
3567 struct ib_uverbs_destroy_srq_resp resp;
3568 struct ib_uobject *uobj;
3569 struct ib_uevent_object *obj;
3570 int ret;
3571
3572 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3573 if (ret)
3574 return ret;
3575
3576 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3577 if (IS_ERR(uobj))
3578 return PTR_ERR(uobj);
3579
3580 obj = container_of(uobj, struct ib_uevent_object, uobject);
3581 memset(&resp, 0, sizeof(resp));
3582 resp.events_reported = obj->events_reported;
3583
3584 uobj_put_destroy(uobj);
3585
3586 return uverbs_response(attrs, &resp, sizeof(resp));
3587}
3588
3589static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs)
3590{
3591 struct ib_uverbs_ex_query_device_resp resp = {};
3592 struct ib_uverbs_ex_query_device cmd;
3593 struct ib_device_attr attr = {0};
3594 struct ib_ucontext *ucontext;
3595 struct ib_device *ib_dev;
3596 int err;
3597
3598 ucontext = ib_uverbs_get_ucontext(attrs);
3599 if (IS_ERR(ucontext))
3600 return PTR_ERR(ucontext);
3601 ib_dev = ucontext->device;
3602
3603 err = uverbs_request(attrs, &cmd, sizeof(cmd));
3604 if (err)
3605 return err;
3606
3607 if (cmd.comp_mask)
3608 return -EINVAL;
3609
3610 if (cmd.reserved)
3611 return -EINVAL;
3612
3613 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata);
3614 if (err)
3615 return err;
3616
3617 copy_query_dev_fields(ucontext, &resp.base, &attr);
3618
3619 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3620 resp.odp_caps.per_transport_caps.rc_odp_caps =
3621 attr.odp_caps.per_transport_caps.rc_odp_caps;
3622 resp.odp_caps.per_transport_caps.uc_odp_caps =
3623 attr.odp_caps.per_transport_caps.uc_odp_caps;
3624 resp.odp_caps.per_transport_caps.ud_odp_caps =
3625 attr.odp_caps.per_transport_caps.ud_odp_caps;
3626 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps;
3627
3628 resp.timestamp_mask = attr.timestamp_mask;
3629 resp.hca_core_clock = attr.hca_core_clock;
3630 resp.device_cap_flags_ex = attr.device_cap_flags;
3631 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3632 resp.rss_caps.max_rwq_indirection_tables =
3633 attr.rss_caps.max_rwq_indirection_tables;
3634 resp.rss_caps.max_rwq_indirection_table_size =
3635 attr.rss_caps.max_rwq_indirection_table_size;
3636 resp.max_wq_type_rq = attr.max_wq_type_rq;
3637 resp.raw_packet_caps = attr.raw_packet_caps;
3638 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size;
3639 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags;
3640 resp.tm_caps.max_ops = attr.tm_caps.max_ops;
3641 resp.tm_caps.max_sge = attr.tm_caps.max_sge;
3642 resp.tm_caps.flags = attr.tm_caps.flags;
3643 resp.cq_moderation_caps.max_cq_moderation_count =
3644 attr.cq_caps.max_cq_moderation_count;
3645 resp.cq_moderation_caps.max_cq_moderation_period =
3646 attr.cq_caps.max_cq_moderation_period;
3647 resp.max_dm_size = attr.max_dm_size;
3648 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3649
3650 return uverbs_response(attrs, &resp, sizeof(resp));
3651}
3652
3653static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs)
3654{
3655 struct ib_uverbs_ex_modify_cq cmd;
3656 struct ib_cq *cq;
3657 int ret;
3658
3659 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3660 if (ret)
3661 return ret;
3662
3663 if (!cmd.attr_mask || cmd.reserved)
3664 return -EINVAL;
3665
3666 if (cmd.attr_mask > IB_CQ_MODERATE)
3667 return -EOPNOTSUPP;
3668
3669 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
3670 if (!cq)
3671 return -EINVAL;
3672
3673 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period);
3674
3675 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
3676 UVERBS_LOOKUP_READ);
3677 return ret;
3678}
3679
3680/*
3681 * Describe the input structs for write(). Some write methods have an input
3682 * only struct, most have an input and output. If the struct has an output then
3683 * the 'response' u64 must be the first field in the request structure.
3684 *
3685 * If udata is present then both the request and response structs have a
3686 * trailing driver_data flex array. In this case the size of the base struct
3687 * cannot be changed.
3688 */
3689#define UAPI_DEF_WRITE_IO(req, resp) \
3690 .write.has_resp = 1 + \
3691 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \
3692 BUILD_BUG_ON_ZERO(sizeof_field(req, response) != \
3693 sizeof(u64)), \
3694 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp)
3695
3696#define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req)
3697
3698#define UAPI_DEF_WRITE_UDATA_IO(req, resp) \
3699 UAPI_DEF_WRITE_IO(req, resp), \
3700 .write.has_udata = \
3701 1 + \
3702 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3703 sizeof(req)) + \
3704 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \
3705 sizeof(resp))
3706
3707#define UAPI_DEF_WRITE_UDATA_I(req) \
3708 UAPI_DEF_WRITE_I(req), \
3709 .write.has_udata = \
3710 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3711 sizeof(req))
3712
3713/*
3714 * The _EX versions are for use with WRITE_EX and allow the last struct member
3715 * to be specified. Buffers that do not include that member will be rejected.
3716 */
3717#define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \
3718 .write.has_resp = 1, \
3719 .write.req_size = offsetofend(req, req_last_member), \
3720 .write.resp_size = offsetofend(resp, resp_last_member)
3721
3722#define UAPI_DEF_WRITE_I_EX(req, req_last_member) \
3723 .write.req_size = offsetofend(req, req_last_member)
3724
3725const struct uapi_definition uverbs_def_write_intf[] = {
3726 DECLARE_UVERBS_OBJECT(
3727 UVERBS_OBJECT_AH,
3728 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH,
3729 ib_uverbs_create_ah,
3730 UAPI_DEF_WRITE_UDATA_IO(
3731 struct ib_uverbs_create_ah,
3732 struct ib_uverbs_create_ah_resp)),
3733 DECLARE_UVERBS_WRITE(
3734 IB_USER_VERBS_CMD_DESTROY_AH,
3735 ib_uverbs_destroy_ah,
3736 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah)),
3737 UAPI_DEF_OBJ_NEEDS_FN(create_user_ah),
3738 UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)),
3739
3740 DECLARE_UVERBS_OBJECT(
3741 UVERBS_OBJECT_COMP_CHANNEL,
3742 DECLARE_UVERBS_WRITE(
3743 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
3744 ib_uverbs_create_comp_channel,
3745 UAPI_DEF_WRITE_IO(
3746 struct ib_uverbs_create_comp_channel,
3747 struct ib_uverbs_create_comp_channel_resp))),
3748
3749 DECLARE_UVERBS_OBJECT(
3750 UVERBS_OBJECT_CQ,
3751 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ,
3752 ib_uverbs_create_cq,
3753 UAPI_DEF_WRITE_UDATA_IO(
3754 struct ib_uverbs_create_cq,
3755 struct ib_uverbs_create_cq_resp),
3756 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3757 DECLARE_UVERBS_WRITE(
3758 IB_USER_VERBS_CMD_DESTROY_CQ,
3759 ib_uverbs_destroy_cq,
3760 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq,
3761 struct ib_uverbs_destroy_cq_resp),
3762 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)),
3763 DECLARE_UVERBS_WRITE(
3764 IB_USER_VERBS_CMD_POLL_CQ,
3765 ib_uverbs_poll_cq,
3766 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq,
3767 struct ib_uverbs_poll_cq_resp),
3768 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)),
3769 DECLARE_UVERBS_WRITE(
3770 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
3771 ib_uverbs_req_notify_cq,
3772 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq),
3773 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)),
3774 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ,
3775 ib_uverbs_resize_cq,
3776 UAPI_DEF_WRITE_UDATA_IO(
3777 struct ib_uverbs_resize_cq,
3778 struct ib_uverbs_resize_cq_resp),
3779 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)),
3780 DECLARE_UVERBS_WRITE_EX(
3781 IB_USER_VERBS_EX_CMD_CREATE_CQ,
3782 ib_uverbs_ex_create_cq,
3783 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq,
3784 reserved,
3785 struct ib_uverbs_ex_create_cq_resp,
3786 response_length),
3787 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3788 DECLARE_UVERBS_WRITE_EX(
3789 IB_USER_VERBS_EX_CMD_MODIFY_CQ,
3790 ib_uverbs_ex_modify_cq,
3791 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq),
3792 UAPI_DEF_METHOD_NEEDS_FN(modify_cq))),
3793
3794 DECLARE_UVERBS_OBJECT(
3795 UVERBS_OBJECT_DEVICE,
3796 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT,
3797 ib_uverbs_get_context,
3798 UAPI_DEF_WRITE_UDATA_IO(
3799 struct ib_uverbs_get_context,
3800 struct ib_uverbs_get_context_resp)),
3801 DECLARE_UVERBS_WRITE(
3802 IB_USER_VERBS_CMD_QUERY_DEVICE,
3803 ib_uverbs_query_device,
3804 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device,
3805 struct ib_uverbs_query_device_resp)),
3806 DECLARE_UVERBS_WRITE(
3807 IB_USER_VERBS_CMD_QUERY_PORT,
3808 ib_uverbs_query_port,
3809 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port,
3810 struct ib_uverbs_query_port_resp),
3811 UAPI_DEF_METHOD_NEEDS_FN(query_port)),
3812 DECLARE_UVERBS_WRITE_EX(
3813 IB_USER_VERBS_EX_CMD_QUERY_DEVICE,
3814 ib_uverbs_ex_query_device,
3815 UAPI_DEF_WRITE_IO_EX(
3816 struct ib_uverbs_ex_query_device,
3817 reserved,
3818 struct ib_uverbs_ex_query_device_resp,
3819 response_length),
3820 UAPI_DEF_METHOD_NEEDS_FN(query_device)),
3821 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext),
3822 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)),
3823
3824 DECLARE_UVERBS_OBJECT(
3825 UVERBS_OBJECT_FLOW,
3826 DECLARE_UVERBS_WRITE_EX(
3827 IB_USER_VERBS_EX_CMD_CREATE_FLOW,
3828 ib_uverbs_ex_create_flow,
3829 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow,
3830 flow_attr,
3831 struct ib_uverbs_create_flow_resp,
3832 flow_handle),
3833 UAPI_DEF_METHOD_NEEDS_FN(create_flow)),
3834 DECLARE_UVERBS_WRITE_EX(
3835 IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
3836 ib_uverbs_ex_destroy_flow,
3837 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow),
3838 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))),
3839
3840 DECLARE_UVERBS_OBJECT(
3841 UVERBS_OBJECT_MR,
3842 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR,
3843 ib_uverbs_dereg_mr,
3844 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr),
3845 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)),
3846 DECLARE_UVERBS_WRITE(
3847 IB_USER_VERBS_CMD_REG_MR,
3848 ib_uverbs_reg_mr,
3849 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr,
3850 struct ib_uverbs_reg_mr_resp),
3851 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)),
3852 DECLARE_UVERBS_WRITE(
3853 IB_USER_VERBS_CMD_REREG_MR,
3854 ib_uverbs_rereg_mr,
3855 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr,
3856 struct ib_uverbs_rereg_mr_resp),
3857 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))),
3858
3859 DECLARE_UVERBS_OBJECT(
3860 UVERBS_OBJECT_MW,
3861 DECLARE_UVERBS_WRITE(
3862 IB_USER_VERBS_CMD_ALLOC_MW,
3863 ib_uverbs_alloc_mw,
3864 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw,
3865 struct ib_uverbs_alloc_mw_resp),
3866 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)),
3867 DECLARE_UVERBS_WRITE(
3868 IB_USER_VERBS_CMD_DEALLOC_MW,
3869 ib_uverbs_dealloc_mw,
3870 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw),
3871 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))),
3872
3873 DECLARE_UVERBS_OBJECT(
3874 UVERBS_OBJECT_PD,
3875 DECLARE_UVERBS_WRITE(
3876 IB_USER_VERBS_CMD_ALLOC_PD,
3877 ib_uverbs_alloc_pd,
3878 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd,
3879 struct ib_uverbs_alloc_pd_resp),
3880 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)),
3881 DECLARE_UVERBS_WRITE(
3882 IB_USER_VERBS_CMD_DEALLOC_PD,
3883 ib_uverbs_dealloc_pd,
3884 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd),
3885 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))),
3886
3887 DECLARE_UVERBS_OBJECT(
3888 UVERBS_OBJECT_QP,
3889 DECLARE_UVERBS_WRITE(
3890 IB_USER_VERBS_CMD_ATTACH_MCAST,
3891 ib_uverbs_attach_mcast,
3892 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast),
3893 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast),
3894 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3895 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP,
3896 ib_uverbs_create_qp,
3897 UAPI_DEF_WRITE_UDATA_IO(
3898 struct ib_uverbs_create_qp,
3899 struct ib_uverbs_create_qp_resp),
3900 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3901 DECLARE_UVERBS_WRITE(
3902 IB_USER_VERBS_CMD_DESTROY_QP,
3903 ib_uverbs_destroy_qp,
3904 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp,
3905 struct ib_uverbs_destroy_qp_resp),
3906 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)),
3907 DECLARE_UVERBS_WRITE(
3908 IB_USER_VERBS_CMD_DETACH_MCAST,
3909 ib_uverbs_detach_mcast,
3910 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast),
3911 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3912 DECLARE_UVERBS_WRITE(
3913 IB_USER_VERBS_CMD_MODIFY_QP,
3914 ib_uverbs_modify_qp,
3915 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp),
3916 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)),
3917 DECLARE_UVERBS_WRITE(
3918 IB_USER_VERBS_CMD_POST_RECV,
3919 ib_uverbs_post_recv,
3920 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv,
3921 struct ib_uverbs_post_recv_resp),
3922 UAPI_DEF_METHOD_NEEDS_FN(post_recv)),
3923 DECLARE_UVERBS_WRITE(
3924 IB_USER_VERBS_CMD_POST_SEND,
3925 ib_uverbs_post_send,
3926 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send,
3927 struct ib_uverbs_post_send_resp),
3928 UAPI_DEF_METHOD_NEEDS_FN(post_send)),
3929 DECLARE_UVERBS_WRITE(
3930 IB_USER_VERBS_CMD_QUERY_QP,
3931 ib_uverbs_query_qp,
3932 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp,
3933 struct ib_uverbs_query_qp_resp),
3934 UAPI_DEF_METHOD_NEEDS_FN(query_qp)),
3935 DECLARE_UVERBS_WRITE_EX(
3936 IB_USER_VERBS_EX_CMD_CREATE_QP,
3937 ib_uverbs_ex_create_qp,
3938 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp,
3939 comp_mask,
3940 struct ib_uverbs_ex_create_qp_resp,
3941 response_length),
3942 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3943 DECLARE_UVERBS_WRITE_EX(
3944 IB_USER_VERBS_EX_CMD_MODIFY_QP,
3945 ib_uverbs_ex_modify_qp,
3946 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp,
3947 base,
3948 struct ib_uverbs_ex_modify_qp_resp,
3949 response_length),
3950 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))),
3951
3952 DECLARE_UVERBS_OBJECT(
3953 UVERBS_OBJECT_RWQ_IND_TBL,
3954 DECLARE_UVERBS_WRITE_EX(
3955 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
3956 ib_uverbs_ex_create_rwq_ind_table,
3957 UAPI_DEF_WRITE_IO_EX(
3958 struct ib_uverbs_ex_create_rwq_ind_table,
3959 log_ind_tbl_size,
3960 struct ib_uverbs_ex_create_rwq_ind_table_resp,
3961 ind_tbl_num),
3962 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)),
3963 DECLARE_UVERBS_WRITE_EX(
3964 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL,
3965 ib_uverbs_ex_destroy_rwq_ind_table,
3966 UAPI_DEF_WRITE_I(
3967 struct ib_uverbs_ex_destroy_rwq_ind_table),
3968 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))),
3969
3970 DECLARE_UVERBS_OBJECT(
3971 UVERBS_OBJECT_WQ,
3972 DECLARE_UVERBS_WRITE_EX(
3973 IB_USER_VERBS_EX_CMD_CREATE_WQ,
3974 ib_uverbs_ex_create_wq,
3975 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq,
3976 max_sge,
3977 struct ib_uverbs_ex_create_wq_resp,
3978 wqn),
3979 UAPI_DEF_METHOD_NEEDS_FN(create_wq)),
3980 DECLARE_UVERBS_WRITE_EX(
3981 IB_USER_VERBS_EX_CMD_DESTROY_WQ,
3982 ib_uverbs_ex_destroy_wq,
3983 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq,
3984 wq_handle,
3985 struct ib_uverbs_ex_destroy_wq_resp,
3986 reserved),
3987 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)),
3988 DECLARE_UVERBS_WRITE_EX(
3989 IB_USER_VERBS_EX_CMD_MODIFY_WQ,
3990 ib_uverbs_ex_modify_wq,
3991 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq,
3992 curr_wq_state),
3993 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))),
3994
3995 DECLARE_UVERBS_OBJECT(
3996 UVERBS_OBJECT_SRQ,
3997 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ,
3998 ib_uverbs_create_srq,
3999 UAPI_DEF_WRITE_UDATA_IO(
4000 struct ib_uverbs_create_srq,
4001 struct ib_uverbs_create_srq_resp),
4002 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4003 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ,
4004 ib_uverbs_create_xsrq,
4005 UAPI_DEF_WRITE_UDATA_IO(
4006 struct ib_uverbs_create_xsrq,
4007 struct ib_uverbs_create_srq_resp),
4008 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4009 DECLARE_UVERBS_WRITE(
4010 IB_USER_VERBS_CMD_DESTROY_SRQ,
4011 ib_uverbs_destroy_srq,
4012 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq,
4013 struct ib_uverbs_destroy_srq_resp),
4014 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)),
4015 DECLARE_UVERBS_WRITE(
4016 IB_USER_VERBS_CMD_MODIFY_SRQ,
4017 ib_uverbs_modify_srq,
4018 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq),
4019 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)),
4020 DECLARE_UVERBS_WRITE(
4021 IB_USER_VERBS_CMD_POST_SRQ_RECV,
4022 ib_uverbs_post_srq_recv,
4023 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv,
4024 struct ib_uverbs_post_srq_recv_resp),
4025 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)),
4026 DECLARE_UVERBS_WRITE(
4027 IB_USER_VERBS_CMD_QUERY_SRQ,
4028 ib_uverbs_query_srq,
4029 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq,
4030 struct ib_uverbs_query_srq_resp),
4031 UAPI_DEF_METHOD_NEEDS_FN(query_srq))),
4032
4033 DECLARE_UVERBS_OBJECT(
4034 UVERBS_OBJECT_XRCD,
4035 DECLARE_UVERBS_WRITE(
4036 IB_USER_VERBS_CMD_CLOSE_XRCD,
4037 ib_uverbs_close_xrcd,
4038 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd)),
4039 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP,
4040 ib_uverbs_open_qp,
4041 UAPI_DEF_WRITE_UDATA_IO(
4042 struct ib_uverbs_open_qp,
4043 struct ib_uverbs_create_qp_resp)),
4044 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD,
4045 ib_uverbs_open_xrcd,
4046 UAPI_DEF_WRITE_UDATA_IO(
4047 struct ib_uverbs_open_xrcd,
4048 struct ib_uverbs_open_xrcd_resp)),
4049 UAPI_DEF_OBJ_NEEDS_FN(alloc_xrcd),
4050 UAPI_DEF_OBJ_NEEDS_FN(dealloc_xrcd)),
4051
4052 {},
4053};