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 */
uverbs_response(struct uverbs_attr_bundle * attrs,const void * resp,size_t resp_len)58 static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp,
59 size_t resp_len)
60 {
61 int ret;
62
63 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
64 return uverbs_copy_to_struct_or_zero(
65 attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len);
66
67 if (copy_to_user(attrs->ucore.outbuf, resp,
68 min(attrs->ucore.outlen, resp_len)))
69 return -EFAULT;
70
71 if (resp_len < attrs->ucore.outlen) {
72 /*
73 * Zero fill any extra memory that user
74 * space might have provided.
75 */
76 ret = clear_user(attrs->ucore.outbuf + resp_len,
77 attrs->ucore.outlen - resp_len);
78 if (ret)
79 return -EFAULT;
80 }
81
82 return 0;
83 }
84
85 /*
86 * Copy a request from userspace. If the provided 'req' is larger than the
87 * user buffer then the user buffer is zero extended into the 'req'. If 'req'
88 * is smaller than the user buffer then the uncopied bytes in the user buffer
89 * must be zero.
90 */
uverbs_request(struct uverbs_attr_bundle * attrs,void * req,size_t req_len)91 static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req,
92 size_t req_len)
93 {
94 if (copy_from_user(req, attrs->ucore.inbuf,
95 min(attrs->ucore.inlen, req_len)))
96 return -EFAULT;
97
98 if (attrs->ucore.inlen < req_len) {
99 memset(req + attrs->ucore.inlen, 0,
100 req_len - attrs->ucore.inlen);
101 } else if (attrs->ucore.inlen > req_len) {
102 if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len,
103 attrs->ucore.inlen - req_len))
104 return -EOPNOTSUPP;
105 }
106 return 0;
107 }
108
109 /*
110 * Generate the value for the 'response_length' protocol used by write_ex.
111 * This is the number of bytes the kernel actually wrote. Userspace can use
112 * this to detect what structure members in the response the kernel
113 * understood.
114 */
uverbs_response_length(struct uverbs_attr_bundle * attrs,size_t resp_len)115 static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs,
116 size_t resp_len)
117 {
118 return min_t(size_t, attrs->ucore.outlen, resp_len);
119 }
120
121 /*
122 * The iterator version of the request interface is for handlers that need to
123 * step over a flex array at the end of a command header.
124 */
125 struct uverbs_req_iter {
126 const void __user *cur;
127 const void __user *end;
128 };
129
uverbs_request_start(struct uverbs_attr_bundle * attrs,struct uverbs_req_iter * iter,void * req,size_t req_len)130 static int uverbs_request_start(struct uverbs_attr_bundle *attrs,
131 struct uverbs_req_iter *iter,
132 void *req,
133 size_t req_len)
134 {
135 if (attrs->ucore.inlen < req_len)
136 return -ENOSPC;
137
138 if (copy_from_user(req, attrs->ucore.inbuf, req_len))
139 return -EFAULT;
140
141 iter->cur = attrs->ucore.inbuf + req_len;
142 iter->end = attrs->ucore.inbuf + attrs->ucore.inlen;
143 return 0;
144 }
145
uverbs_request_next(struct uverbs_req_iter * iter,void * val,size_t len)146 static int uverbs_request_next(struct uverbs_req_iter *iter, void *val,
147 size_t len)
148 {
149 if (iter->cur + len > iter->end)
150 return -ENOSPC;
151
152 if (copy_from_user(val, iter->cur, len))
153 return -EFAULT;
154
155 iter->cur += len;
156 return 0;
157 }
158
uverbs_request_next_ptr(struct uverbs_req_iter * iter,size_t len)159 static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter,
160 size_t len)
161 {
162 const void __user *res = iter->cur;
163
164 if (iter->cur + len > iter->end)
165 return (void __force __user *)ERR_PTR(-ENOSPC);
166 iter->cur += len;
167 return res;
168 }
169
uverbs_request_finish(struct uverbs_req_iter * iter)170 static int uverbs_request_finish(struct uverbs_req_iter *iter)
171 {
172 if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur))
173 return -EOPNOTSUPP;
174 return 0;
175 }
176
177 /*
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 */
uverbs_get_cleared_udata(struct uverbs_attr_bundle * attrs)182 struct 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
188 static struct ib_uverbs_completion_event_file *
_ib_uverbs_lookup_comp_file(s32 fd,struct uverbs_attr_bundle * attrs)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
ib_alloc_ucontext(struct uverbs_attr_bundle * attrs)206 int 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
ib_init_ucontext(struct uverbs_attr_bundle * attrs)231 int 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
267 err_uncharge:
268 ib_rdmacg_uncharge(&ucontext->cg_obj, ucontext->device,
269 RDMACG_RESOURCE_HCA_HANDLE);
270 err:
271 mutex_unlock(&file->ucontext_lock);
272 up_read(&file->hw_destroy_rwsem);
273 return ret;
274 }
275
ib_uverbs_get_context(struct uverbs_attr_bundle * attrs)276 static 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
315 err_uobj:
316 rdma_alloc_abort_uobject(uobj, attrs, false);
317 err_ucontext:
318 rdma_restrack_put(&attrs->context->res);
319 kfree(attrs->context);
320 attrs->context = NULL;
321 return ret;
322 }
323
copy_query_dev_fields(struct ib_ucontext * ucontext,struct ib_uverbs_query_device_resp * resp,struct ib_device_attr * attr)324 static 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
ib_uverbs_query_device(struct uverbs_attr_bundle * attrs)370 static 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
ib_uverbs_query_port(struct uverbs_attr_bundle * attrs)391 static 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
ib_uverbs_alloc_pd(struct uverbs_attr_bundle * attrs)419 static 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
460 err_alloc:
461 rdma_restrack_put(&pd->res);
462 kfree(pd);
463 err:
464 uobj_alloc_abort(uobj, attrs);
465 return ret;
466 }
467
ib_uverbs_dealloc_pd(struct uverbs_attr_bundle * attrs)468 static 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
480 struct xrcd_table_entry {
481 struct rb_node node;
482 struct ib_xrcd *xrcd;
483 struct inode *inode;
484 };
485
xrcd_table_insert(struct ib_uverbs_device * dev,struct inode * inode,struct ib_xrcd * xrcd)486 static 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
xrcd_table_search(struct ib_uverbs_device * dev,struct inode * inode)521 static 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
find_xrcd(struct ib_uverbs_device * dev,struct inode * inode)541 static 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
xrcd_table_delete(struct ib_uverbs_device * dev,struct inode * inode)552 static 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
ib_uverbs_open_xrcd(struct uverbs_attr_bundle * attrs)565 static 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
644 err_dealloc_xrcd:
645 ib_dealloc_xrcd_user(xrcd, uverbs_get_cleared_udata(attrs));
646
647 err:
648 uobj_alloc_abort(&obj->uobject, attrs);
649
650 err_tree_mutex_unlock:
651 if (f.file)
652 fdput(f);
653
654 mutex_unlock(&ibudev->xrcd_tree_mutex);
655
656 return ret;
657 }
658
ib_uverbs_close_xrcd(struct uverbs_attr_bundle * attrs)659 static 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
ib_uverbs_dealloc_xrcd(struct ib_uobject * uobject,struct ib_xrcd * xrcd,enum rdma_remove_reason why,struct uverbs_attr_bundle * attrs)671 int 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
ib_uverbs_reg_mr(struct uverbs_attr_bundle * attrs)695 static 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
757 err_put:
758 uobj_put_obj_read(pd);
759 err_free:
760 uobj_alloc_abort(uobj, attrs);
761 return ret;
762 }
763
ib_uverbs_rereg_mr(struct uverbs_attr_bundle * attrs)764 static 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
877 put_new_uobj:
878 if (new_uobj)
879 uobj_alloc_abort(new_uobj, attrs);
880 put_uobj_pd:
881 if (cmd.flags & IB_MR_REREG_PD)
882 uobj_put_obj_read(new_pd);
883
884 put_uobjs:
885 if (uobj)
886 uobj_put_write(uobj);
887
888 return ret;
889 }
890
ib_uverbs_dereg_mr(struct uverbs_attr_bundle * attrs)891 static 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
ib_uverbs_alloc_mw(struct uverbs_attr_bundle * attrs)903 static 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
957 err_alloc:
958 kfree(mw);
959 err_put:
960 uobj_put_obj_read(pd);
961 err_free:
962 uobj_alloc_abort(uobj, attrs);
963 return ret;
964 }
965
ib_uverbs_dealloc_mw(struct uverbs_attr_bundle * attrs)966 static 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
ib_uverbs_create_comp_channel(struct uverbs_attr_bundle * attrs)978 static 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
create_cq(struct uverbs_attr_bundle * attrs,struct ib_uverbs_ex_create_cq * cmd)1004 static 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
1070 err_free:
1071 rdma_restrack_put(&cq->res);
1072 kfree(cq);
1073 err_file:
1074 if (ev_file)
1075 ib_uverbs_release_ucq(ev_file, obj);
1076 err:
1077 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1078 return ret;
1079 }
1080
ib_uverbs_create_cq(struct uverbs_attr_bundle * attrs)1081 static 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
ib_uverbs_ex_create_cq(struct uverbs_attr_bundle * attrs)1100 static 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
ib_uverbs_resize_cq(struct uverbs_attr_bundle * attrs)1118 static 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));
1140 out:
1141 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1142 UVERBS_LOOKUP_READ);
1143
1144 return ret;
1145 }
1146
copy_wc_to_user(struct ib_device * ib_dev,void __user * dest,struct ib_wc * wc)1147 static 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
ib_uverbs_poll_cq(struct uverbs_attr_bundle * attrs)1177 static 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
1224 out_put:
1225 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
1226 UVERBS_LOOKUP_READ);
1227 return ret;
1228 }
1229
ib_uverbs_req_notify_cq(struct uverbs_attr_bundle * attrs)1230 static 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
ib_uverbs_destroy_cq(struct uverbs_attr_bundle * attrs)1252 static 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
create_qp(struct uverbs_attr_bundle * attrs,struct ib_uverbs_ex_create_qp * cmd)1278 static 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
1482 err_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
ib_uverbs_create_qp(struct uverbs_attr_bundle * attrs)1503 static 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
ib_uverbs_ex_create_qp(struct uverbs_attr_bundle * attrs)1531 static 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
ib_uverbs_open_qp(struct uverbs_attr_bundle * attrs)1549 static 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
1608 err_xrcd:
1609 uobj_put_read(xrcd_uobj);
1610 err_put:
1611 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1612 return ret;
1613 }
1614
copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest * uverb_attr,struct rdma_ah_attr * rdma_attr)1615 static 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
ib_uverbs_query_qp(struct uverbs_attr_bundle * attrs)1637 static 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
1707 out:
1708 kfree(attr);
1709 kfree(init_attr);
1710
1711 return ret;
1712 }
1713
1714 /* Remove ignored fields set in the attribute mask */
modify_qp_mask(enum ib_qp_type qp_type,int mask)1715 static 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
copy_ah_attr_from_uverbs(struct ib_device * dev,struct rdma_ah_attr * rdma_attr,struct ib_uverbs_qp_dest * uverb_attr)1728 static 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
modify_qp(struct uverbs_attr_bundle * attrs,struct ib_uverbs_ex_modify_qp * cmd)1751 static 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 && !capable(CAP_NET_RAW)) {
1855 ret = -EPERM;
1856 goto release_qp;
1857 }
1858 attr->qkey = cmd->base.qkey;
1859 }
1860 if (cmd->base.attr_mask & IB_QP_RQ_PSN)
1861 attr->rq_psn = cmd->base.rq_psn;
1862 if (cmd->base.attr_mask & IB_QP_SQ_PSN)
1863 attr->sq_psn = cmd->base.sq_psn;
1864 if (cmd->base.attr_mask & IB_QP_DEST_QPN)
1865 attr->dest_qp_num = cmd->base.dest_qp_num;
1866 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS)
1867 attr->qp_access_flags = cmd->base.qp_access_flags;
1868 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX)
1869 attr->pkey_index = cmd->base.pkey_index;
1870 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
1871 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
1872 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC)
1873 attr->max_rd_atomic = cmd->base.max_rd_atomic;
1874 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
1875 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
1876 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER)
1877 attr->min_rnr_timer = cmd->base.min_rnr_timer;
1878 if (cmd->base.attr_mask & IB_QP_PORT)
1879 attr->port_num = cmd->base.port_num;
1880 if (cmd->base.attr_mask & IB_QP_TIMEOUT)
1881 attr->timeout = cmd->base.timeout;
1882 if (cmd->base.attr_mask & IB_QP_RETRY_CNT)
1883 attr->retry_cnt = cmd->base.retry_cnt;
1884 if (cmd->base.attr_mask & IB_QP_RNR_RETRY)
1885 attr->rnr_retry = cmd->base.rnr_retry;
1886 if (cmd->base.attr_mask & IB_QP_ALT_PATH) {
1887 attr->alt_port_num = cmd->base.alt_port_num;
1888 attr->alt_timeout = cmd->base.alt_timeout;
1889 attr->alt_pkey_index = cmd->base.alt_pkey_index;
1890 }
1891 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT)
1892 attr->rate_limit = cmd->rate_limit;
1893
1894 if (cmd->base.attr_mask & IB_QP_AV)
1895 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,
1896 &cmd->base.dest);
1897
1898 if (cmd->base.attr_mask & IB_QP_ALT_PATH)
1899 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr,
1900 &cmd->base.alt_dest);
1901
1902 ret = ib_modify_qp_with_udata(qp, attr,
1903 modify_qp_mask(qp->qp_type,
1904 cmd->base.attr_mask),
1905 &attrs->driver_udata);
1906
1907 release_qp:
1908 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
1909 UVERBS_LOOKUP_READ);
1910 out:
1911 kfree(attr);
1912
1913 return ret;
1914 }
1915
ib_uverbs_modify_qp(struct uverbs_attr_bundle * attrs)1916 static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs)
1917 {
1918 struct ib_uverbs_ex_modify_qp cmd;
1919 int ret;
1920
1921 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base));
1922 if (ret)
1923 return ret;
1924
1925 if (cmd.base.attr_mask & ~IB_QP_ATTR_STANDARD_BITS)
1926 return -EOPNOTSUPP;
1927
1928 return modify_qp(attrs, &cmd);
1929 }
1930
ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle * attrs)1931 static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs)
1932 {
1933 struct ib_uverbs_ex_modify_qp cmd;
1934 struct ib_uverbs_ex_modify_qp_resp resp = {
1935 .response_length = uverbs_response_length(attrs, sizeof(resp))
1936 };
1937 int ret;
1938
1939 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1940 if (ret)
1941 return ret;
1942
1943 /*
1944 * Last bit is reserved for extending the attr_mask by
1945 * using another field.
1946 */
1947 if (cmd.base.attr_mask & ~(IB_QP_ATTR_STANDARD_BITS | IB_QP_RATE_LIMIT))
1948 return -EOPNOTSUPP;
1949
1950 ret = modify_qp(attrs, &cmd);
1951 if (ret)
1952 return ret;
1953
1954 return uverbs_response(attrs, &resp, sizeof(resp));
1955 }
1956
ib_uverbs_destroy_qp(struct uverbs_attr_bundle * attrs)1957 static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs)
1958 {
1959 struct ib_uverbs_destroy_qp cmd;
1960 struct ib_uverbs_destroy_qp_resp resp;
1961 struct ib_uobject *uobj;
1962 struct ib_uqp_object *obj;
1963 int ret;
1964
1965 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1966 if (ret)
1967 return ret;
1968
1969 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1970 if (IS_ERR(uobj))
1971 return PTR_ERR(uobj);
1972
1973 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
1974 memset(&resp, 0, sizeof(resp));
1975 resp.events_reported = obj->uevent.events_reported;
1976
1977 uobj_put_destroy(uobj);
1978
1979 return uverbs_response(attrs, &resp, sizeof(resp));
1980 }
1981
alloc_wr(size_t wr_size,__u32 num_sge)1982 static void *alloc_wr(size_t wr_size, __u32 num_sge)
1983 {
1984 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof(struct ib_sge))) /
1985 sizeof(struct ib_sge))
1986 return NULL;
1987
1988 return kmalloc(ALIGN(wr_size, sizeof(struct ib_sge)) +
1989 num_sge * sizeof(struct ib_sge),
1990 GFP_KERNEL);
1991 }
1992
ib_uverbs_post_send(struct uverbs_attr_bundle * attrs)1993 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs)
1994 {
1995 struct ib_uverbs_post_send cmd;
1996 struct ib_uverbs_post_send_resp resp;
1997 struct ib_uverbs_send_wr *user_wr;
1998 struct ib_send_wr *wr = NULL, *last, *next;
1999 const struct ib_send_wr *bad_wr;
2000 struct ib_qp *qp;
2001 int i, sg_ind;
2002 int is_ud;
2003 int ret, ret2;
2004 size_t next_size;
2005 const struct ib_sge __user *sgls;
2006 const void __user *wqes;
2007 struct uverbs_req_iter iter;
2008
2009 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2010 if (ret)
2011 return ret;
2012 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count);
2013 if (IS_ERR(wqes))
2014 return PTR_ERR(wqes);
2015 sgls = uverbs_request_next_ptr(
2016 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge));
2017 if (IS_ERR(sgls))
2018 return PTR_ERR(sgls);
2019 ret = uverbs_request_finish(&iter);
2020 if (ret)
2021 return ret;
2022
2023 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2024 if (!user_wr)
2025 return -ENOMEM;
2026
2027 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2028 if (!qp) {
2029 ret = -EINVAL;
2030 goto out;
2031 }
2032
2033 is_ud = qp->qp_type == IB_QPT_UD;
2034 sg_ind = 0;
2035 last = NULL;
2036 for (i = 0; i < cmd.wr_count; ++i) {
2037 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size,
2038 cmd.wqe_size)) {
2039 ret = -EFAULT;
2040 goto out_put;
2041 }
2042
2043 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2044 ret = -EINVAL;
2045 goto out_put;
2046 }
2047
2048 if (is_ud) {
2049 struct ib_ud_wr *ud;
2050
2051 if (user_wr->opcode != IB_WR_SEND &&
2052 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2053 ret = -EINVAL;
2054 goto out_put;
2055 }
2056
2057 next_size = sizeof(*ud);
2058 ud = alloc_wr(next_size, user_wr->num_sge);
2059 if (!ud) {
2060 ret = -ENOMEM;
2061 goto out_put;
2062 }
2063
2064 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH,
2065 user_wr->wr.ud.ah, attrs);
2066 if (!ud->ah) {
2067 kfree(ud);
2068 ret = -EINVAL;
2069 goto out_put;
2070 }
2071 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2072 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2073
2074 next = &ud->wr;
2075 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2076 user_wr->opcode == IB_WR_RDMA_WRITE ||
2077 user_wr->opcode == IB_WR_RDMA_READ) {
2078 struct ib_rdma_wr *rdma;
2079
2080 next_size = sizeof(*rdma);
2081 rdma = alloc_wr(next_size, user_wr->num_sge);
2082 if (!rdma) {
2083 ret = -ENOMEM;
2084 goto out_put;
2085 }
2086
2087 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2088 rdma->rkey = user_wr->wr.rdma.rkey;
2089
2090 next = &rdma->wr;
2091 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2092 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2093 struct ib_atomic_wr *atomic;
2094
2095 next_size = sizeof(*atomic);
2096 atomic = alloc_wr(next_size, user_wr->num_sge);
2097 if (!atomic) {
2098 ret = -ENOMEM;
2099 goto out_put;
2100 }
2101
2102 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2103 atomic->compare_add = user_wr->wr.atomic.compare_add;
2104 atomic->swap = user_wr->wr.atomic.swap;
2105 atomic->rkey = user_wr->wr.atomic.rkey;
2106
2107 next = &atomic->wr;
2108 } else if (user_wr->opcode == IB_WR_SEND ||
2109 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2110 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2111 next_size = sizeof(*next);
2112 next = alloc_wr(next_size, user_wr->num_sge);
2113 if (!next) {
2114 ret = -ENOMEM;
2115 goto out_put;
2116 }
2117 } else {
2118 ret = -EINVAL;
2119 goto out_put;
2120 }
2121
2122 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2123 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2124 next->ex.imm_data =
2125 (__be32 __force) user_wr->ex.imm_data;
2126 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2127 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2128 }
2129
2130 if (!last)
2131 wr = next;
2132 else
2133 last->next = next;
2134 last = next;
2135
2136 next->next = NULL;
2137 next->wr_id = user_wr->wr_id;
2138 next->num_sge = user_wr->num_sge;
2139 next->opcode = user_wr->opcode;
2140 next->send_flags = user_wr->send_flags;
2141
2142 if (next->num_sge) {
2143 next->sg_list = (void *) next +
2144 ALIGN(next_size, sizeof(struct ib_sge));
2145 if (copy_from_user(next->sg_list, sgls + sg_ind,
2146 next->num_sge *
2147 sizeof(struct ib_sge))) {
2148 ret = -EFAULT;
2149 goto out_put;
2150 }
2151 sg_ind += next->num_sge;
2152 } else
2153 next->sg_list = NULL;
2154 }
2155
2156 resp.bad_wr = 0;
2157 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr);
2158 if (ret)
2159 for (next = wr; next; next = next->next) {
2160 ++resp.bad_wr;
2161 if (next == bad_wr)
2162 break;
2163 }
2164
2165 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2166 if (ret2)
2167 ret = ret2;
2168
2169 out_put:
2170 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2171 UVERBS_LOOKUP_READ);
2172
2173 while (wr) {
2174 if (is_ud && ud_wr(wr)->ah)
2175 uobj_put_obj_read(ud_wr(wr)->ah);
2176 next = wr->next;
2177 kfree(wr);
2178 wr = next;
2179 }
2180
2181 out:
2182 kfree(user_wr);
2183
2184 return ret;
2185 }
2186
2187 static struct ib_recv_wr *
ib_uverbs_unmarshall_recv(struct uverbs_req_iter * iter,u32 wr_count,u32 wqe_size,u32 sge_count)2188 ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
2189 u32 wqe_size, u32 sge_count)
2190 {
2191 struct ib_uverbs_recv_wr *user_wr;
2192 struct ib_recv_wr *wr = NULL, *last, *next;
2193 int sg_ind;
2194 int i;
2195 int ret;
2196 const struct ib_sge __user *sgls;
2197 const void __user *wqes;
2198
2199 if (wqe_size < sizeof(struct ib_uverbs_recv_wr))
2200 return ERR_PTR(-EINVAL);
2201
2202 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count);
2203 if (IS_ERR(wqes))
2204 return ERR_CAST(wqes);
2205 sgls = uverbs_request_next_ptr(
2206 iter, sge_count * sizeof(struct ib_uverbs_sge));
2207 if (IS_ERR(sgls))
2208 return ERR_CAST(sgls);
2209 ret = uverbs_request_finish(iter);
2210 if (ret)
2211 return ERR_PTR(ret);
2212
2213 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2214 if (!user_wr)
2215 return ERR_PTR(-ENOMEM);
2216
2217 sg_ind = 0;
2218 last = NULL;
2219 for (i = 0; i < wr_count; ++i) {
2220 if (copy_from_user(user_wr, wqes + i * wqe_size,
2221 wqe_size)) {
2222 ret = -EFAULT;
2223 goto err;
2224 }
2225
2226 if (user_wr->num_sge + sg_ind > sge_count) {
2227 ret = -EINVAL;
2228 goto err;
2229 }
2230
2231 if (user_wr->num_sge >=
2232 (U32_MAX - ALIGN(sizeof(*next), sizeof(struct ib_sge))) /
2233 sizeof(struct ib_sge)) {
2234 ret = -EINVAL;
2235 goto err;
2236 }
2237
2238 next = kmalloc(ALIGN(sizeof(*next), sizeof(struct ib_sge)) +
2239 user_wr->num_sge * sizeof(struct ib_sge),
2240 GFP_KERNEL);
2241 if (!next) {
2242 ret = -ENOMEM;
2243 goto err;
2244 }
2245
2246 if (!last)
2247 wr = next;
2248 else
2249 last->next = next;
2250 last = next;
2251
2252 next->next = NULL;
2253 next->wr_id = user_wr->wr_id;
2254 next->num_sge = user_wr->num_sge;
2255
2256 if (next->num_sge) {
2257 next->sg_list = (void *)next +
2258 ALIGN(sizeof(*next), sizeof(struct ib_sge));
2259 if (copy_from_user(next->sg_list, sgls + sg_ind,
2260 next->num_sge *
2261 sizeof(struct ib_sge))) {
2262 ret = -EFAULT;
2263 goto err;
2264 }
2265 sg_ind += next->num_sge;
2266 } else
2267 next->sg_list = NULL;
2268 }
2269
2270 kfree(user_wr);
2271 return wr;
2272
2273 err:
2274 kfree(user_wr);
2275
2276 while (wr) {
2277 next = wr->next;
2278 kfree(wr);
2279 wr = next;
2280 }
2281
2282 return ERR_PTR(ret);
2283 }
2284
ib_uverbs_post_recv(struct uverbs_attr_bundle * attrs)2285 static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs)
2286 {
2287 struct ib_uverbs_post_recv cmd;
2288 struct ib_uverbs_post_recv_resp resp;
2289 struct ib_recv_wr *wr, *next;
2290 const struct ib_recv_wr *bad_wr;
2291 struct ib_qp *qp;
2292 int ret, ret2;
2293 struct uverbs_req_iter iter;
2294
2295 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2296 if (ret)
2297 return ret;
2298
2299 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2300 cmd.sge_count);
2301 if (IS_ERR(wr))
2302 return PTR_ERR(wr);
2303
2304 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2305 if (!qp) {
2306 ret = -EINVAL;
2307 goto out;
2308 }
2309
2310 resp.bad_wr = 0;
2311 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr);
2312
2313 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2314 UVERBS_LOOKUP_READ);
2315 if (ret) {
2316 for (next = wr; next; next = next->next) {
2317 ++resp.bad_wr;
2318 if (next == bad_wr)
2319 break;
2320 }
2321 }
2322
2323 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2324 if (ret2)
2325 ret = ret2;
2326 out:
2327 while (wr) {
2328 next = wr->next;
2329 kfree(wr);
2330 wr = next;
2331 }
2332
2333 return ret;
2334 }
2335
ib_uverbs_post_srq_recv(struct uverbs_attr_bundle * attrs)2336 static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs)
2337 {
2338 struct ib_uverbs_post_srq_recv cmd;
2339 struct ib_uverbs_post_srq_recv_resp resp;
2340 struct ib_recv_wr *wr, *next;
2341 const struct ib_recv_wr *bad_wr;
2342 struct ib_srq *srq;
2343 int ret, ret2;
2344 struct uverbs_req_iter iter;
2345
2346 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2347 if (ret)
2348 return ret;
2349
2350 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2351 cmd.sge_count);
2352 if (IS_ERR(wr))
2353 return PTR_ERR(wr);
2354
2355 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
2356 if (!srq) {
2357 ret = -EINVAL;
2358 goto out;
2359 }
2360
2361 resp.bad_wr = 0;
2362 ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr);
2363
2364 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
2365 UVERBS_LOOKUP_READ);
2366
2367 if (ret)
2368 for (next = wr; next; next = next->next) {
2369 ++resp.bad_wr;
2370 if (next == bad_wr)
2371 break;
2372 }
2373
2374 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2375 if (ret2)
2376 ret = ret2;
2377
2378 out:
2379 while (wr) {
2380 next = wr->next;
2381 kfree(wr);
2382 wr = next;
2383 }
2384
2385 return ret;
2386 }
2387
ib_uverbs_create_ah(struct uverbs_attr_bundle * attrs)2388 static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs)
2389 {
2390 struct ib_uverbs_create_ah cmd;
2391 struct ib_uverbs_create_ah_resp resp;
2392 struct ib_uobject *uobj;
2393 struct ib_pd *pd;
2394 struct ib_ah *ah;
2395 struct rdma_ah_attr attr = {};
2396 int ret;
2397 struct ib_device *ib_dev;
2398
2399 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2400 if (ret)
2401 return ret;
2402
2403 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev);
2404 if (IS_ERR(uobj))
2405 return PTR_ERR(uobj);
2406
2407 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) {
2408 ret = -EINVAL;
2409 goto err;
2410 }
2411
2412 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2413 if (!pd) {
2414 ret = -EINVAL;
2415 goto err;
2416 }
2417
2418 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2419 rdma_ah_set_make_grd(&attr, false);
2420 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2421 rdma_ah_set_sl(&attr, cmd.attr.sl);
2422 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2423 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2424 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2425
2426 if (cmd.attr.is_global) {
2427 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2428 cmd.attr.grh.sgid_index,
2429 cmd.attr.grh.hop_limit,
2430 cmd.attr.grh.traffic_class);
2431 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2432 } else {
2433 rdma_ah_set_ah_flags(&attr, 0);
2434 }
2435
2436 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata);
2437 if (IS_ERR(ah)) {
2438 ret = PTR_ERR(ah);
2439 goto err_put;
2440 }
2441
2442 ah->uobject = uobj;
2443 uobj->user_handle = cmd.user_handle;
2444 uobj->object = ah;
2445 uobj_put_obj_read(pd);
2446 uobj_finalize_uobj_create(uobj, attrs);
2447
2448 resp.ah_handle = uobj->id;
2449 return uverbs_response(attrs, &resp, sizeof(resp));
2450
2451 err_put:
2452 uobj_put_obj_read(pd);
2453 err:
2454 uobj_alloc_abort(uobj, attrs);
2455 return ret;
2456 }
2457
ib_uverbs_destroy_ah(struct uverbs_attr_bundle * attrs)2458 static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs)
2459 {
2460 struct ib_uverbs_destroy_ah cmd;
2461 int ret;
2462
2463 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2464 if (ret)
2465 return ret;
2466
2467 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs);
2468 }
2469
ib_uverbs_attach_mcast(struct uverbs_attr_bundle * attrs)2470 static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs)
2471 {
2472 struct ib_uverbs_attach_mcast cmd;
2473 struct ib_qp *qp;
2474 struct ib_uqp_object *obj;
2475 struct ib_uverbs_mcast_entry *mcast;
2476 int ret;
2477
2478 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2479 if (ret)
2480 return ret;
2481
2482 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2483 if (!qp)
2484 return -EINVAL;
2485
2486 obj = qp->uobject;
2487
2488 mutex_lock(&obj->mcast_lock);
2489 list_for_each_entry(mcast, &obj->mcast_list, list)
2490 if (cmd.mlid == mcast->lid &&
2491 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2492 ret = 0;
2493 goto out_put;
2494 }
2495
2496 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2497 if (!mcast) {
2498 ret = -ENOMEM;
2499 goto out_put;
2500 }
2501
2502 mcast->lid = cmd.mlid;
2503 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2504
2505 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2506 if (!ret)
2507 list_add_tail(&mcast->list, &obj->mcast_list);
2508 else
2509 kfree(mcast);
2510
2511 out_put:
2512 mutex_unlock(&obj->mcast_lock);
2513 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2514 UVERBS_LOOKUP_READ);
2515
2516 return ret;
2517 }
2518
ib_uverbs_detach_mcast(struct uverbs_attr_bundle * attrs)2519 static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs)
2520 {
2521 struct ib_uverbs_detach_mcast cmd;
2522 struct ib_uqp_object *obj;
2523 struct ib_qp *qp;
2524 struct ib_uverbs_mcast_entry *mcast;
2525 int ret;
2526 bool found = false;
2527
2528 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2529 if (ret)
2530 return ret;
2531
2532 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2533 if (!qp)
2534 return -EINVAL;
2535
2536 obj = qp->uobject;
2537 mutex_lock(&obj->mcast_lock);
2538
2539 list_for_each_entry(mcast, &obj->mcast_list, list)
2540 if (cmd.mlid == mcast->lid &&
2541 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2542 list_del(&mcast->list);
2543 kfree(mcast);
2544 found = true;
2545 break;
2546 }
2547
2548 if (!found) {
2549 ret = -EINVAL;
2550 goto out_put;
2551 }
2552
2553 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2554
2555 out_put:
2556 mutex_unlock(&obj->mcast_lock);
2557 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
2558 UVERBS_LOOKUP_READ);
2559 return ret;
2560 }
2561
flow_resources_alloc(size_t num_specs)2562 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs)
2563 {
2564 struct ib_uflow_resources *resources;
2565
2566 resources = kzalloc(sizeof(*resources), GFP_KERNEL);
2567
2568 if (!resources)
2569 return NULL;
2570
2571 if (!num_specs)
2572 goto out;
2573
2574 resources->counters =
2575 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
2576 resources->collection =
2577 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL);
2578
2579 if (!resources->counters || !resources->collection)
2580 goto err;
2581
2582 out:
2583 resources->max = num_specs;
2584 return resources;
2585
2586 err:
2587 kfree(resources->counters);
2588 kfree(resources);
2589
2590 return NULL;
2591 }
2592 EXPORT_SYMBOL(flow_resources_alloc);
2593
ib_uverbs_flow_resources_free(struct ib_uflow_resources * uflow_res)2594 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
2595 {
2596 unsigned int i;
2597
2598 if (!uflow_res)
2599 return;
2600
2601 for (i = 0; i < uflow_res->collection_num; i++)
2602 atomic_dec(&uflow_res->collection[i]->usecnt);
2603
2604 for (i = 0; i < uflow_res->counters_num; i++)
2605 atomic_dec(&uflow_res->counters[i]->usecnt);
2606
2607 kfree(uflow_res->collection);
2608 kfree(uflow_res->counters);
2609 kfree(uflow_res);
2610 }
2611 EXPORT_SYMBOL(ib_uverbs_flow_resources_free);
2612
flow_resources_add(struct ib_uflow_resources * uflow_res,enum ib_flow_spec_type type,void * ibobj)2613 void flow_resources_add(struct ib_uflow_resources *uflow_res,
2614 enum ib_flow_spec_type type,
2615 void *ibobj)
2616 {
2617 WARN_ON(uflow_res->num >= uflow_res->max);
2618
2619 switch (type) {
2620 case IB_FLOW_SPEC_ACTION_HANDLE:
2621 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt);
2622 uflow_res->collection[uflow_res->collection_num++] =
2623 (struct ib_flow_action *)ibobj;
2624 break;
2625 case IB_FLOW_SPEC_ACTION_COUNT:
2626 atomic_inc(&((struct ib_counters *)ibobj)->usecnt);
2627 uflow_res->counters[uflow_res->counters_num++] =
2628 (struct ib_counters *)ibobj;
2629 break;
2630 default:
2631 WARN_ON(1);
2632 }
2633
2634 uflow_res->num++;
2635 }
2636 EXPORT_SYMBOL(flow_resources_add);
2637
kern_spec_to_ib_spec_action(struct uverbs_attr_bundle * attrs,struct ib_uverbs_flow_spec * kern_spec,union ib_flow_spec * ib_spec,struct ib_uflow_resources * uflow_res)2638 static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
2639 struct ib_uverbs_flow_spec *kern_spec,
2640 union ib_flow_spec *ib_spec,
2641 struct ib_uflow_resources *uflow_res)
2642 {
2643 ib_spec->type = kern_spec->type;
2644 switch (ib_spec->type) {
2645 case IB_FLOW_SPEC_ACTION_TAG:
2646 if (kern_spec->flow_tag.size !=
2647 sizeof(struct ib_uverbs_flow_spec_action_tag))
2648 return -EINVAL;
2649
2650 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2651 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2652 break;
2653 case IB_FLOW_SPEC_ACTION_DROP:
2654 if (kern_spec->drop.size !=
2655 sizeof(struct ib_uverbs_flow_spec_action_drop))
2656 return -EINVAL;
2657
2658 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2659 break;
2660 case IB_FLOW_SPEC_ACTION_HANDLE:
2661 if (kern_spec->action.size !=
2662 sizeof(struct ib_uverbs_flow_spec_action_handle))
2663 return -EOPNOTSUPP;
2664 ib_spec->action.act = uobj_get_obj_read(flow_action,
2665 UVERBS_OBJECT_FLOW_ACTION,
2666 kern_spec->action.handle,
2667 attrs);
2668 if (!ib_spec->action.act)
2669 return -EINVAL;
2670 ib_spec->action.size =
2671 sizeof(struct ib_flow_spec_action_handle);
2672 flow_resources_add(uflow_res,
2673 IB_FLOW_SPEC_ACTION_HANDLE,
2674 ib_spec->action.act);
2675 uobj_put_obj_read(ib_spec->action.act);
2676 break;
2677 case IB_FLOW_SPEC_ACTION_COUNT:
2678 if (kern_spec->flow_count.size !=
2679 sizeof(struct ib_uverbs_flow_spec_action_count))
2680 return -EINVAL;
2681 ib_spec->flow_count.counters =
2682 uobj_get_obj_read(counters,
2683 UVERBS_OBJECT_COUNTERS,
2684 kern_spec->flow_count.handle,
2685 attrs);
2686 if (!ib_spec->flow_count.counters)
2687 return -EINVAL;
2688 ib_spec->flow_count.size =
2689 sizeof(struct ib_flow_spec_action_count);
2690 flow_resources_add(uflow_res,
2691 IB_FLOW_SPEC_ACTION_COUNT,
2692 ib_spec->flow_count.counters);
2693 uobj_put_obj_read(ib_spec->flow_count.counters);
2694 break;
2695 default:
2696 return -EINVAL;
2697 }
2698 return 0;
2699 }
2700
spec_filter_size(const void * kern_spec_filter,u16 kern_filter_size,u16 ib_real_filter_sz)2701 static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
2702 u16 ib_real_filter_sz)
2703 {
2704 /*
2705 * User space filter structures must be 64 bit aligned, otherwise this
2706 * may pass, but we won't handle additional new attributes.
2707 */
2708
2709 if (kern_filter_size > ib_real_filter_sz) {
2710 if (memchr_inv(kern_spec_filter +
2711 ib_real_filter_sz, 0,
2712 kern_filter_size - ib_real_filter_sz))
2713 return -EINVAL;
2714 return ib_real_filter_sz;
2715 }
2716 return kern_filter_size;
2717 }
2718
ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,const void * kern_spec_mask,const void * kern_spec_val,size_t kern_filter_sz,union ib_flow_spec * ib_spec)2719 int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
2720 const void *kern_spec_mask,
2721 const void *kern_spec_val,
2722 size_t kern_filter_sz,
2723 union ib_flow_spec *ib_spec)
2724 {
2725 ssize_t actual_filter_sz;
2726 ssize_t ib_filter_sz;
2727
2728 /* User flow spec size must be aligned to 4 bytes */
2729 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2730 return -EINVAL;
2731
2732 ib_spec->type = type;
2733
2734 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2735 return -EINVAL;
2736
2737 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2738 case IB_FLOW_SPEC_ETH:
2739 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2740 actual_filter_sz = spec_filter_size(kern_spec_mask,
2741 kern_filter_sz,
2742 ib_filter_sz);
2743 if (actual_filter_sz <= 0)
2744 return -EINVAL;
2745 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2746 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2747 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2748 break;
2749 case IB_FLOW_SPEC_IPV4:
2750 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz);
2751 actual_filter_sz = spec_filter_size(kern_spec_mask,
2752 kern_filter_sz,
2753 ib_filter_sz);
2754 if (actual_filter_sz <= 0)
2755 return -EINVAL;
2756 ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
2757 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2758 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2759 break;
2760 case IB_FLOW_SPEC_IPV6:
2761 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz);
2762 actual_filter_sz = spec_filter_size(kern_spec_mask,
2763 kern_filter_sz,
2764 ib_filter_sz);
2765 if (actual_filter_sz <= 0)
2766 return -EINVAL;
2767 ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
2768 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2769 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2770
2771 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2772 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2773 return -EINVAL;
2774 break;
2775 case IB_FLOW_SPEC_TCP:
2776 case IB_FLOW_SPEC_UDP:
2777 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
2778 actual_filter_sz = spec_filter_size(kern_spec_mask,
2779 kern_filter_sz,
2780 ib_filter_sz);
2781 if (actual_filter_sz <= 0)
2782 return -EINVAL;
2783 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2784 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2785 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2786 break;
2787 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2788 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz);
2789 actual_filter_sz = spec_filter_size(kern_spec_mask,
2790 kern_filter_sz,
2791 ib_filter_sz);
2792 if (actual_filter_sz <= 0)
2793 return -EINVAL;
2794 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2795 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2796 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2797
2798 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2799 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2800 return -EINVAL;
2801 break;
2802 case IB_FLOW_SPEC_ESP:
2803 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz);
2804 actual_filter_sz = spec_filter_size(kern_spec_mask,
2805 kern_filter_sz,
2806 ib_filter_sz);
2807 if (actual_filter_sz <= 0)
2808 return -EINVAL;
2809 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp);
2810 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz);
2811 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz);
2812 break;
2813 case IB_FLOW_SPEC_GRE:
2814 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz);
2815 actual_filter_sz = spec_filter_size(kern_spec_mask,
2816 kern_filter_sz,
2817 ib_filter_sz);
2818 if (actual_filter_sz <= 0)
2819 return -EINVAL;
2820 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre);
2821 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz);
2822 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz);
2823 break;
2824 case IB_FLOW_SPEC_MPLS:
2825 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz);
2826 actual_filter_sz = spec_filter_size(kern_spec_mask,
2827 kern_filter_sz,
2828 ib_filter_sz);
2829 if (actual_filter_sz <= 0)
2830 return -EINVAL;
2831 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls);
2832 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz);
2833 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz);
2834 break;
2835 default:
2836 return -EINVAL;
2837 }
2838 return 0;
2839 }
2840
kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec * kern_spec,union ib_flow_spec * ib_spec)2841 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2842 union ib_flow_spec *ib_spec)
2843 {
2844 size_t kern_filter_sz;
2845 void *kern_spec_mask;
2846 void *kern_spec_val;
2847
2848 if (check_sub_overflow((size_t)kern_spec->hdr.size,
2849 sizeof(struct ib_uverbs_flow_spec_hdr),
2850 &kern_filter_sz))
2851 return -EINVAL;
2852
2853 kern_filter_sz /= 2;
2854
2855 kern_spec_val = (void *)kern_spec +
2856 sizeof(struct ib_uverbs_flow_spec_hdr);
2857 kern_spec_mask = kern_spec_val + kern_filter_sz;
2858
2859 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
2860 kern_spec_mask,
2861 kern_spec_val,
2862 kern_filter_sz, ib_spec);
2863 }
2864
kern_spec_to_ib_spec(struct uverbs_attr_bundle * attrs,struct ib_uverbs_flow_spec * kern_spec,union ib_flow_spec * ib_spec,struct ib_uflow_resources * uflow_res)2865 static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs,
2866 struct ib_uverbs_flow_spec *kern_spec,
2867 union ib_flow_spec *ib_spec,
2868 struct ib_uflow_resources *uflow_res)
2869 {
2870 if (kern_spec->reserved)
2871 return -EINVAL;
2872
2873 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2874 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec,
2875 uflow_res);
2876 else
2877 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2878 }
2879
ib_uverbs_ex_create_wq(struct uverbs_attr_bundle * attrs)2880 static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs)
2881 {
2882 struct ib_uverbs_ex_create_wq cmd;
2883 struct ib_uverbs_ex_create_wq_resp resp = {};
2884 struct ib_uwq_object *obj;
2885 int err = 0;
2886 struct ib_cq *cq;
2887 struct ib_pd *pd;
2888 struct ib_wq *wq;
2889 struct ib_wq_init_attr wq_init_attr = {};
2890 struct ib_device *ib_dev;
2891
2892 err = uverbs_request(attrs, &cmd, sizeof(cmd));
2893 if (err)
2894 return err;
2895
2896 if (cmd.comp_mask)
2897 return -EOPNOTSUPP;
2898
2899 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs,
2900 &ib_dev);
2901 if (IS_ERR(obj))
2902 return PTR_ERR(obj);
2903
2904 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2905 if (!pd) {
2906 err = -EINVAL;
2907 goto err_uobj;
2908 }
2909
2910 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
2911 if (!cq) {
2912 err = -EINVAL;
2913 goto err_put_pd;
2914 }
2915
2916 wq_init_attr.cq = cq;
2917 wq_init_attr.max_sge = cmd.max_sge;
2918 wq_init_attr.max_wr = cmd.max_wr;
2919 wq_init_attr.wq_type = cmd.wq_type;
2920 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2921 wq_init_attr.create_flags = cmd.create_flags;
2922 INIT_LIST_HEAD(&obj->uevent.event_list);
2923 obj->uevent.uobject.user_handle = cmd.user_handle;
2924
2925 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata);
2926 if (IS_ERR(wq)) {
2927 err = PTR_ERR(wq);
2928 goto err_put_cq;
2929 }
2930
2931 wq->uobject = obj;
2932 obj->uevent.uobject.object = wq;
2933 wq->wq_type = wq_init_attr.wq_type;
2934 wq->cq = cq;
2935 wq->pd = pd;
2936 wq->device = pd->device;
2937 atomic_set(&wq->usecnt, 0);
2938 atomic_inc(&pd->usecnt);
2939 atomic_inc(&cq->usecnt);
2940 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
2941 if (obj->uevent.event_file)
2942 uverbs_uobject_get(&obj->uevent.event_file->uobj);
2943
2944 uobj_put_obj_read(pd);
2945 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2946 UVERBS_LOOKUP_READ);
2947 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
2948
2949 resp.wq_handle = obj->uevent.uobject.id;
2950 resp.max_sge = wq_init_attr.max_sge;
2951 resp.max_wr = wq_init_attr.max_wr;
2952 resp.wqn = wq->wq_num;
2953 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2954 return uverbs_response(attrs, &resp, sizeof(resp));
2955
2956 err_put_cq:
2957 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
2958 UVERBS_LOOKUP_READ);
2959 err_put_pd:
2960 uobj_put_obj_read(pd);
2961 err_uobj:
2962 uobj_alloc_abort(&obj->uevent.uobject, attrs);
2963
2964 return err;
2965 }
2966
ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle * attrs)2967 static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs)
2968 {
2969 struct ib_uverbs_ex_destroy_wq cmd;
2970 struct ib_uverbs_ex_destroy_wq_resp resp = {};
2971 struct ib_uobject *uobj;
2972 struct ib_uwq_object *obj;
2973 int ret;
2974
2975 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2976 if (ret)
2977 return ret;
2978
2979 if (cmd.comp_mask)
2980 return -EOPNOTSUPP;
2981
2982 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2983 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
2984 if (IS_ERR(uobj))
2985 return PTR_ERR(uobj);
2986
2987 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
2988 resp.events_reported = obj->uevent.events_reported;
2989
2990 uobj_put_destroy(uobj);
2991
2992 return uverbs_response(attrs, &resp, sizeof(resp));
2993 }
2994
ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle * attrs)2995 static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs)
2996 {
2997 struct ib_uverbs_ex_modify_wq cmd;
2998 struct ib_wq *wq;
2999 struct ib_wq_attr wq_attr = {};
3000 int ret;
3001
3002 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3003 if (ret)
3004 return ret;
3005
3006 if (!cmd.attr_mask)
3007 return -EINVAL;
3008
3009 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3010 return -EINVAL;
3011
3012 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3013 if (!wq)
3014 return -EINVAL;
3015
3016 if (cmd.attr_mask & IB_WQ_FLAGS) {
3017 wq_attr.flags = cmd.flags;
3018 wq_attr.flags_mask = cmd.flags_mask;
3019 }
3020
3021 if (cmd.attr_mask & IB_WQ_CUR_STATE) {
3022 if (cmd.curr_wq_state > IB_WQS_ERR)
3023 return -EINVAL;
3024
3025 wq_attr.curr_wq_state = cmd.curr_wq_state;
3026 } else {
3027 wq_attr.curr_wq_state = wq->state;
3028 }
3029
3030 if (cmd.attr_mask & IB_WQ_STATE) {
3031 if (cmd.wq_state > IB_WQS_ERR)
3032 return -EINVAL;
3033
3034 wq_attr.wq_state = cmd.wq_state;
3035 } else {
3036 wq_attr.wq_state = wq_attr.curr_wq_state;
3037 }
3038
3039 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask,
3040 &attrs->driver_udata);
3041 rdma_lookup_put_uobject(&wq->uobject->uevent.uobject,
3042 UVERBS_LOOKUP_READ);
3043 return ret;
3044 }
3045
ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle * attrs)3046 static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3047 {
3048 struct ib_uverbs_ex_create_rwq_ind_table cmd;
3049 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3050 struct ib_uobject *uobj;
3051 int err;
3052 struct ib_rwq_ind_table_init_attr init_attr = {};
3053 struct ib_rwq_ind_table *rwq_ind_tbl;
3054 struct ib_wq **wqs = NULL;
3055 u32 *wqs_handles = NULL;
3056 struct ib_wq *wq = NULL;
3057 int i, num_read_wqs;
3058 u32 num_wq_handles;
3059 struct uverbs_req_iter iter;
3060 struct ib_device *ib_dev;
3061
3062 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3063 if (err)
3064 return err;
3065
3066 if (cmd.comp_mask)
3067 return -EOPNOTSUPP;
3068
3069 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3070 return -EINVAL;
3071
3072 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3073 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3074 GFP_KERNEL);
3075 if (!wqs_handles)
3076 return -ENOMEM;
3077
3078 err = uverbs_request_next(&iter, wqs_handles,
3079 num_wq_handles * sizeof(__u32));
3080 if (err)
3081 goto err_free;
3082
3083 err = uverbs_request_finish(&iter);
3084 if (err)
3085 goto err_free;
3086
3087 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3088 if (!wqs) {
3089 err = -ENOMEM;
3090 goto err_free;
3091 }
3092
3093 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3094 num_read_wqs++) {
3095 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ,
3096 wqs_handles[num_read_wqs], attrs);
3097 if (!wq) {
3098 err = -EINVAL;
3099 goto put_wqs;
3100 }
3101
3102 wqs[num_read_wqs] = wq;
3103 atomic_inc(&wqs[num_read_wqs]->usecnt);
3104 }
3105
3106 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev);
3107 if (IS_ERR(uobj)) {
3108 err = PTR_ERR(uobj);
3109 goto put_wqs;
3110 }
3111
3112 rwq_ind_tbl = rdma_zalloc_drv_obj(ib_dev, ib_rwq_ind_table);
3113 if (!rwq_ind_tbl) {
3114 err = -ENOMEM;
3115 goto err_uobj;
3116 }
3117
3118 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3119 init_attr.ind_tbl = wqs;
3120
3121 rwq_ind_tbl->ind_tbl = wqs;
3122 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3123 rwq_ind_tbl->uobject = uobj;
3124 uobj->object = rwq_ind_tbl;
3125 rwq_ind_tbl->device = ib_dev;
3126 atomic_set(&rwq_ind_tbl->usecnt, 0);
3127
3128 err = ib_dev->ops.create_rwq_ind_table(rwq_ind_tbl, &init_attr,
3129 &attrs->driver_udata);
3130 if (err)
3131 goto err_create;
3132
3133 for (i = 0; i < num_wq_handles; i++)
3134 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3135 UVERBS_LOOKUP_READ);
3136 kfree(wqs_handles);
3137 uobj_finalize_uobj_create(uobj, attrs);
3138
3139 resp.ind_tbl_handle = uobj->id;
3140 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3141 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3142 return uverbs_response(attrs, &resp, sizeof(resp));
3143
3144 err_create:
3145 kfree(rwq_ind_tbl);
3146 err_uobj:
3147 uobj_alloc_abort(uobj, attrs);
3148 put_wqs:
3149 for (i = 0; i < num_read_wqs; i++) {
3150 rdma_lookup_put_uobject(&wqs[i]->uobject->uevent.uobject,
3151 UVERBS_LOOKUP_READ);
3152 atomic_dec(&wqs[i]->usecnt);
3153 }
3154 err_free:
3155 kfree(wqs_handles);
3156 kfree(wqs);
3157 return err;
3158 }
3159
ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle * attrs)3160 static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3161 {
3162 struct ib_uverbs_ex_destroy_rwq_ind_table cmd;
3163 int ret;
3164
3165 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3166 if (ret)
3167 return ret;
3168
3169 if (cmd.comp_mask)
3170 return -EOPNOTSUPP;
3171
3172 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL,
3173 cmd.ind_tbl_handle, attrs);
3174 }
3175
ib_uverbs_ex_create_flow(struct uverbs_attr_bundle * attrs)3176 static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs)
3177 {
3178 struct ib_uverbs_create_flow cmd;
3179 struct ib_uverbs_create_flow_resp resp = {};
3180 struct ib_uobject *uobj;
3181 struct ib_flow *flow_id;
3182 struct ib_uverbs_flow_attr *kern_flow_attr;
3183 struct ib_flow_attr *flow_attr;
3184 struct ib_qp *qp;
3185 struct ib_uflow_resources *uflow_res;
3186 struct ib_uverbs_flow_spec_hdr *kern_spec;
3187 struct uverbs_req_iter iter;
3188 int err;
3189 void *ib_spec;
3190 int i;
3191 struct ib_device *ib_dev;
3192
3193 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3194 if (err)
3195 return err;
3196
3197 if (cmd.comp_mask)
3198 return -EINVAL;
3199
3200 if (!capable(CAP_NET_RAW))
3201 return -EPERM;
3202
3203 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3204 return -EINVAL;
3205
3206 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3207 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3208 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3209 return -EINVAL;
3210
3211 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3212 return -EINVAL;
3213
3214 if (cmd.flow_attr.size >
3215 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3216 return -EINVAL;
3217
3218 if (cmd.flow_attr.reserved[0] ||
3219 cmd.flow_attr.reserved[1])
3220 return -EINVAL;
3221
3222 if (cmd.flow_attr.num_of_specs) {
3223 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3224 GFP_KERNEL);
3225 if (!kern_flow_attr)
3226 return -ENOMEM;
3227
3228 *kern_flow_attr = cmd.flow_attr;
3229 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs,
3230 cmd.flow_attr.size);
3231 if (err)
3232 goto err_free_attr;
3233 } else {
3234 kern_flow_attr = &cmd.flow_attr;
3235 }
3236
3237 err = uverbs_request_finish(&iter);
3238 if (err)
3239 goto err_free_attr;
3240
3241 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev);
3242 if (IS_ERR(uobj)) {
3243 err = PTR_ERR(uobj);
3244 goto err_free_attr;
3245 }
3246
3247 if (!rdma_is_port_valid(uobj->context->device, cmd.flow_attr.port)) {
3248 err = -EINVAL;
3249 goto err_uobj;
3250 }
3251
3252 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
3253 if (!qp) {
3254 err = -EINVAL;
3255 goto err_uobj;
3256 }
3257
3258 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) {
3259 err = -EINVAL;
3260 goto err_put;
3261 }
3262
3263 flow_attr = kzalloc(struct_size(flow_attr, flows,
3264 cmd.flow_attr.num_of_specs), GFP_KERNEL);
3265 if (!flow_attr) {
3266 err = -ENOMEM;
3267 goto err_put;
3268 }
3269 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs);
3270 if (!uflow_res) {
3271 err = -ENOMEM;
3272 goto err_free_flow_attr;
3273 }
3274
3275 flow_attr->type = kern_flow_attr->type;
3276 flow_attr->priority = kern_flow_attr->priority;
3277 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3278 flow_attr->port = kern_flow_attr->port;
3279 flow_attr->flags = kern_flow_attr->flags;
3280 flow_attr->size = sizeof(*flow_attr);
3281
3282 kern_spec = kern_flow_attr->flow_specs;
3283 ib_spec = flow_attr + 1;
3284 for (i = 0; i < flow_attr->num_of_specs &&
3285 cmd.flow_attr.size >= sizeof(*kern_spec) &&
3286 cmd.flow_attr.size >= kern_spec->size;
3287 i++) {
3288 err = kern_spec_to_ib_spec(
3289 attrs, (struct ib_uverbs_flow_spec *)kern_spec,
3290 ib_spec, uflow_res);
3291 if (err)
3292 goto err_free;
3293
3294 flow_attr->size +=
3295 ((union ib_flow_spec *) ib_spec)->size;
3296 cmd.flow_attr.size -= kern_spec->size;
3297 kern_spec = ((void *)kern_spec) + kern_spec->size;
3298 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3299 }
3300 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3301 pr_warn("create flow failed, flow %d: %u bytes left from uverb cmd\n",
3302 i, cmd.flow_attr.size);
3303 err = -EINVAL;
3304 goto err_free;
3305 }
3306
3307 flow_id = qp->device->ops.create_flow(qp, flow_attr,
3308 &attrs->driver_udata);
3309
3310 if (IS_ERR(flow_id)) {
3311 err = PTR_ERR(flow_id);
3312 goto err_free;
3313 }
3314
3315 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res);
3316
3317 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3318 UVERBS_LOOKUP_READ);
3319 kfree(flow_attr);
3320
3321 if (cmd.flow_attr.num_of_specs)
3322 kfree(kern_flow_attr);
3323 uobj_finalize_uobj_create(uobj, attrs);
3324
3325 resp.flow_handle = uobj->id;
3326 return uverbs_response(attrs, &resp, sizeof(resp));
3327
3328 err_free:
3329 ib_uverbs_flow_resources_free(uflow_res);
3330 err_free_flow_attr:
3331 kfree(flow_attr);
3332 err_put:
3333 rdma_lookup_put_uobject(&qp->uobject->uevent.uobject,
3334 UVERBS_LOOKUP_READ);
3335 err_uobj:
3336 uobj_alloc_abort(uobj, attrs);
3337 err_free_attr:
3338 if (cmd.flow_attr.num_of_specs)
3339 kfree(kern_flow_attr);
3340 return err;
3341 }
3342
ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle * attrs)3343 static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs)
3344 {
3345 struct ib_uverbs_destroy_flow cmd;
3346 int ret;
3347
3348 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3349 if (ret)
3350 return ret;
3351
3352 if (cmd.comp_mask)
3353 return -EINVAL;
3354
3355 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs);
3356 }
3357
__uverbs_create_xsrq(struct uverbs_attr_bundle * attrs,struct ib_uverbs_create_xsrq * cmd,struct ib_udata * udata)3358 static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs,
3359 struct ib_uverbs_create_xsrq *cmd,
3360 struct ib_udata *udata)
3361 {
3362 struct ib_uverbs_create_srq_resp resp = {};
3363 struct ib_usrq_object *obj;
3364 struct ib_pd *pd;
3365 struct ib_srq *srq;
3366 struct ib_srq_init_attr attr;
3367 int ret;
3368 struct ib_uobject *xrcd_uobj;
3369 struct ib_device *ib_dev;
3370
3371 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs,
3372 &ib_dev);
3373 if (IS_ERR(obj))
3374 return PTR_ERR(obj);
3375
3376 if (cmd->srq_type == IB_SRQT_TM)
3377 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
3378
3379 if (cmd->srq_type == IB_SRQT_XRC) {
3380 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle,
3381 attrs);
3382 if (IS_ERR(xrcd_uobj)) {
3383 ret = -EINVAL;
3384 goto err;
3385 }
3386
3387 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3388 if (!attr.ext.xrc.xrcd) {
3389 ret = -EINVAL;
3390 goto err_put_xrcd;
3391 }
3392
3393 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3394 atomic_inc(&obj->uxrcd->refcnt);
3395 }
3396
3397 if (ib_srq_has_cq(cmd->srq_type)) {
3398 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
3399 cmd->cq_handle, attrs);
3400 if (!attr.ext.cq) {
3401 ret = -EINVAL;
3402 goto err_put_xrcd;
3403 }
3404 }
3405
3406 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs);
3407 if (!pd) {
3408 ret = -EINVAL;
3409 goto err_put_cq;
3410 }
3411
3412 attr.event_handler = ib_uverbs_srq_event_handler;
3413 attr.srq_type = cmd->srq_type;
3414 attr.attr.max_wr = cmd->max_wr;
3415 attr.attr.max_sge = cmd->max_sge;
3416 attr.attr.srq_limit = cmd->srq_limit;
3417
3418 INIT_LIST_HEAD(&obj->uevent.event_list);
3419 obj->uevent.uobject.user_handle = cmd->user_handle;
3420
3421 srq = ib_create_srq_user(pd, &attr, obj, udata);
3422 if (IS_ERR(srq)) {
3423 ret = PTR_ERR(srq);
3424 goto err_put_pd;
3425 }
3426
3427 obj->uevent.uobject.object = srq;
3428 obj->uevent.uobject.user_handle = cmd->user_handle;
3429 obj->uevent.event_file = READ_ONCE(attrs->ufile->default_async_file);
3430 if (obj->uevent.event_file)
3431 uverbs_uobject_get(&obj->uevent.event_file->uobj);
3432
3433 if (cmd->srq_type == IB_SRQT_XRC)
3434 resp.srqn = srq->ext.xrc.srq_num;
3435
3436 if (cmd->srq_type == IB_SRQT_XRC)
3437 uobj_put_read(xrcd_uobj);
3438
3439 if (ib_srq_has_cq(cmd->srq_type))
3440 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3441 UVERBS_LOOKUP_READ);
3442
3443 uobj_put_obj_read(pd);
3444 uobj_finalize_uobj_create(&obj->uevent.uobject, attrs);
3445
3446 resp.srq_handle = obj->uevent.uobject.id;
3447 resp.max_wr = attr.attr.max_wr;
3448 resp.max_sge = attr.attr.max_sge;
3449 return uverbs_response(attrs, &resp, sizeof(resp));
3450
3451 err_put_pd:
3452 uobj_put_obj_read(pd);
3453 err_put_cq:
3454 if (ib_srq_has_cq(cmd->srq_type))
3455 rdma_lookup_put_uobject(&attr.ext.cq->uobject->uevent.uobject,
3456 UVERBS_LOOKUP_READ);
3457
3458 err_put_xrcd:
3459 if (cmd->srq_type == IB_SRQT_XRC) {
3460 atomic_dec(&obj->uxrcd->refcnt);
3461 uobj_put_read(xrcd_uobj);
3462 }
3463
3464 err:
3465 uobj_alloc_abort(&obj->uevent.uobject, attrs);
3466 return ret;
3467 }
3468
ib_uverbs_create_srq(struct uverbs_attr_bundle * attrs)3469 static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs)
3470 {
3471 struct ib_uverbs_create_srq cmd;
3472 struct ib_uverbs_create_xsrq xcmd;
3473 int ret;
3474
3475 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3476 if (ret)
3477 return ret;
3478
3479 memset(&xcmd, 0, sizeof(xcmd));
3480 xcmd.response = cmd.response;
3481 xcmd.user_handle = cmd.user_handle;
3482 xcmd.srq_type = IB_SRQT_BASIC;
3483 xcmd.pd_handle = cmd.pd_handle;
3484 xcmd.max_wr = cmd.max_wr;
3485 xcmd.max_sge = cmd.max_sge;
3486 xcmd.srq_limit = cmd.srq_limit;
3487
3488 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata);
3489 }
3490
ib_uverbs_create_xsrq(struct uverbs_attr_bundle * attrs)3491 static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs)
3492 {
3493 struct ib_uverbs_create_xsrq cmd;
3494 int ret;
3495
3496 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3497 if (ret)
3498 return ret;
3499
3500 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata);
3501 }
3502
ib_uverbs_modify_srq(struct uverbs_attr_bundle * attrs)3503 static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs)
3504 {
3505 struct ib_uverbs_modify_srq cmd;
3506 struct ib_srq *srq;
3507 struct ib_srq_attr attr;
3508 int ret;
3509
3510 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3511 if (ret)
3512 return ret;
3513
3514 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3515 if (!srq)
3516 return -EINVAL;
3517
3518 attr.max_wr = cmd.max_wr;
3519 attr.srq_limit = cmd.srq_limit;
3520
3521 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask,
3522 &attrs->driver_udata);
3523
3524 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3525 UVERBS_LOOKUP_READ);
3526
3527 return ret;
3528 }
3529
ib_uverbs_query_srq(struct uverbs_attr_bundle * attrs)3530 static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs)
3531 {
3532 struct ib_uverbs_query_srq cmd;
3533 struct ib_uverbs_query_srq_resp resp;
3534 struct ib_srq_attr attr;
3535 struct ib_srq *srq;
3536 int ret;
3537
3538 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3539 if (ret)
3540 return ret;
3541
3542 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3543 if (!srq)
3544 return -EINVAL;
3545
3546 ret = ib_query_srq(srq, &attr);
3547
3548 rdma_lookup_put_uobject(&srq->uobject->uevent.uobject,
3549 UVERBS_LOOKUP_READ);
3550
3551 if (ret)
3552 return ret;
3553
3554 memset(&resp, 0, sizeof resp);
3555
3556 resp.max_wr = attr.max_wr;
3557 resp.max_sge = attr.max_sge;
3558 resp.srq_limit = attr.srq_limit;
3559
3560 return uverbs_response(attrs, &resp, sizeof(resp));
3561 }
3562
ib_uverbs_destroy_srq(struct uverbs_attr_bundle * attrs)3563 static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs)
3564 {
3565 struct ib_uverbs_destroy_srq cmd;
3566 struct ib_uverbs_destroy_srq_resp resp;
3567 struct ib_uobject *uobj;
3568 struct ib_uevent_object *obj;
3569 int ret;
3570
3571 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3572 if (ret)
3573 return ret;
3574
3575 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3576 if (IS_ERR(uobj))
3577 return PTR_ERR(uobj);
3578
3579 obj = container_of(uobj, struct ib_uevent_object, uobject);
3580 memset(&resp, 0, sizeof(resp));
3581 resp.events_reported = obj->events_reported;
3582
3583 uobj_put_destroy(uobj);
3584
3585 return uverbs_response(attrs, &resp, sizeof(resp));
3586 }
3587
ib_uverbs_ex_query_device(struct uverbs_attr_bundle * attrs)3588 static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs)
3589 {
3590 struct ib_uverbs_ex_query_device_resp resp = {};
3591 struct ib_uverbs_ex_query_device cmd;
3592 struct ib_device_attr attr = {0};
3593 struct ib_ucontext *ucontext;
3594 struct ib_device *ib_dev;
3595 int err;
3596
3597 ucontext = ib_uverbs_get_ucontext(attrs);
3598 if (IS_ERR(ucontext))
3599 return PTR_ERR(ucontext);
3600 ib_dev = ucontext->device;
3601
3602 err = uverbs_request(attrs, &cmd, sizeof(cmd));
3603 if (err)
3604 return err;
3605
3606 if (cmd.comp_mask)
3607 return -EINVAL;
3608
3609 if (cmd.reserved)
3610 return -EINVAL;
3611
3612 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata);
3613 if (err)
3614 return err;
3615
3616 copy_query_dev_fields(ucontext, &resp.base, &attr);
3617
3618 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3619 resp.odp_caps.per_transport_caps.rc_odp_caps =
3620 attr.odp_caps.per_transport_caps.rc_odp_caps;
3621 resp.odp_caps.per_transport_caps.uc_odp_caps =
3622 attr.odp_caps.per_transport_caps.uc_odp_caps;
3623 resp.odp_caps.per_transport_caps.ud_odp_caps =
3624 attr.odp_caps.per_transport_caps.ud_odp_caps;
3625 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps;
3626
3627 resp.timestamp_mask = attr.timestamp_mask;
3628 resp.hca_core_clock = attr.hca_core_clock;
3629 resp.device_cap_flags_ex = attr.device_cap_flags;
3630 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3631 resp.rss_caps.max_rwq_indirection_tables =
3632 attr.rss_caps.max_rwq_indirection_tables;
3633 resp.rss_caps.max_rwq_indirection_table_size =
3634 attr.rss_caps.max_rwq_indirection_table_size;
3635 resp.max_wq_type_rq = attr.max_wq_type_rq;
3636 resp.raw_packet_caps = attr.raw_packet_caps;
3637 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size;
3638 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags;
3639 resp.tm_caps.max_ops = attr.tm_caps.max_ops;
3640 resp.tm_caps.max_sge = attr.tm_caps.max_sge;
3641 resp.tm_caps.flags = attr.tm_caps.flags;
3642 resp.cq_moderation_caps.max_cq_moderation_count =
3643 attr.cq_caps.max_cq_moderation_count;
3644 resp.cq_moderation_caps.max_cq_moderation_period =
3645 attr.cq_caps.max_cq_moderation_period;
3646 resp.max_dm_size = attr.max_dm_size;
3647 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3648
3649 return uverbs_response(attrs, &resp, sizeof(resp));
3650 }
3651
ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle * attrs)3652 static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs)
3653 {
3654 struct ib_uverbs_ex_modify_cq cmd;
3655 struct ib_cq *cq;
3656 int ret;
3657
3658 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3659 if (ret)
3660 return ret;
3661
3662 if (!cmd.attr_mask || cmd.reserved)
3663 return -EINVAL;
3664
3665 if (cmd.attr_mask > IB_CQ_MODERATE)
3666 return -EOPNOTSUPP;
3667
3668 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
3669 if (!cq)
3670 return -EINVAL;
3671
3672 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period);
3673
3674 rdma_lookup_put_uobject(&cq->uobject->uevent.uobject,
3675 UVERBS_LOOKUP_READ);
3676 return ret;
3677 }
3678
3679 /*
3680 * Describe the input structs for write(). Some write methods have an input
3681 * only struct, most have an input and output. If the struct has an output then
3682 * the 'response' u64 must be the first field in the request structure.
3683 *
3684 * If udata is present then both the request and response structs have a
3685 * trailing driver_data flex array. In this case the size of the base struct
3686 * cannot be changed.
3687 */
3688 #define UAPI_DEF_WRITE_IO(req, resp) \
3689 .write.has_resp = 1 + \
3690 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \
3691 BUILD_BUG_ON_ZERO(sizeof_field(req, response) != \
3692 sizeof(u64)), \
3693 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp)
3694
3695 #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req)
3696
3697 #define UAPI_DEF_WRITE_UDATA_IO(req, resp) \
3698 UAPI_DEF_WRITE_IO(req, resp), \
3699 .write.has_udata = \
3700 1 + \
3701 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3702 sizeof(req)) + \
3703 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \
3704 sizeof(resp))
3705
3706 #define UAPI_DEF_WRITE_UDATA_I(req) \
3707 UAPI_DEF_WRITE_I(req), \
3708 .write.has_udata = \
3709 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3710 sizeof(req))
3711
3712 /*
3713 * The _EX versions are for use with WRITE_EX and allow the last struct member
3714 * to be specified. Buffers that do not include that member will be rejected.
3715 */
3716 #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \
3717 .write.has_resp = 1, \
3718 .write.req_size = offsetofend(req, req_last_member), \
3719 .write.resp_size = offsetofend(resp, resp_last_member)
3720
3721 #define UAPI_DEF_WRITE_I_EX(req, req_last_member) \
3722 .write.req_size = offsetofend(req, req_last_member)
3723
3724 const struct uapi_definition uverbs_def_write_intf[] = {
3725 DECLARE_UVERBS_OBJECT(
3726 UVERBS_OBJECT_AH,
3727 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH,
3728 ib_uverbs_create_ah,
3729 UAPI_DEF_WRITE_UDATA_IO(
3730 struct ib_uverbs_create_ah,
3731 struct ib_uverbs_create_ah_resp)),
3732 DECLARE_UVERBS_WRITE(
3733 IB_USER_VERBS_CMD_DESTROY_AH,
3734 ib_uverbs_destroy_ah,
3735 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah)),
3736 UAPI_DEF_OBJ_NEEDS_FN(create_user_ah),
3737 UAPI_DEF_OBJ_NEEDS_FN(destroy_ah)),
3738
3739 DECLARE_UVERBS_OBJECT(
3740 UVERBS_OBJECT_COMP_CHANNEL,
3741 DECLARE_UVERBS_WRITE(
3742 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
3743 ib_uverbs_create_comp_channel,
3744 UAPI_DEF_WRITE_IO(
3745 struct ib_uverbs_create_comp_channel,
3746 struct ib_uverbs_create_comp_channel_resp))),
3747
3748 DECLARE_UVERBS_OBJECT(
3749 UVERBS_OBJECT_CQ,
3750 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ,
3751 ib_uverbs_create_cq,
3752 UAPI_DEF_WRITE_UDATA_IO(
3753 struct ib_uverbs_create_cq,
3754 struct ib_uverbs_create_cq_resp),
3755 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3756 DECLARE_UVERBS_WRITE(
3757 IB_USER_VERBS_CMD_DESTROY_CQ,
3758 ib_uverbs_destroy_cq,
3759 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq,
3760 struct ib_uverbs_destroy_cq_resp),
3761 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)),
3762 DECLARE_UVERBS_WRITE(
3763 IB_USER_VERBS_CMD_POLL_CQ,
3764 ib_uverbs_poll_cq,
3765 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq,
3766 struct ib_uverbs_poll_cq_resp),
3767 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)),
3768 DECLARE_UVERBS_WRITE(
3769 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
3770 ib_uverbs_req_notify_cq,
3771 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq),
3772 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)),
3773 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ,
3774 ib_uverbs_resize_cq,
3775 UAPI_DEF_WRITE_UDATA_IO(
3776 struct ib_uverbs_resize_cq,
3777 struct ib_uverbs_resize_cq_resp),
3778 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)),
3779 DECLARE_UVERBS_WRITE_EX(
3780 IB_USER_VERBS_EX_CMD_CREATE_CQ,
3781 ib_uverbs_ex_create_cq,
3782 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq,
3783 reserved,
3784 struct ib_uverbs_ex_create_cq_resp,
3785 response_length),
3786 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3787 DECLARE_UVERBS_WRITE_EX(
3788 IB_USER_VERBS_EX_CMD_MODIFY_CQ,
3789 ib_uverbs_ex_modify_cq,
3790 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq),
3791 UAPI_DEF_METHOD_NEEDS_FN(modify_cq))),
3792
3793 DECLARE_UVERBS_OBJECT(
3794 UVERBS_OBJECT_DEVICE,
3795 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT,
3796 ib_uverbs_get_context,
3797 UAPI_DEF_WRITE_UDATA_IO(
3798 struct ib_uverbs_get_context,
3799 struct ib_uverbs_get_context_resp)),
3800 DECLARE_UVERBS_WRITE(
3801 IB_USER_VERBS_CMD_QUERY_DEVICE,
3802 ib_uverbs_query_device,
3803 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device,
3804 struct ib_uverbs_query_device_resp)),
3805 DECLARE_UVERBS_WRITE(
3806 IB_USER_VERBS_CMD_QUERY_PORT,
3807 ib_uverbs_query_port,
3808 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port,
3809 struct ib_uverbs_query_port_resp),
3810 UAPI_DEF_METHOD_NEEDS_FN(query_port)),
3811 DECLARE_UVERBS_WRITE_EX(
3812 IB_USER_VERBS_EX_CMD_QUERY_DEVICE,
3813 ib_uverbs_ex_query_device,
3814 UAPI_DEF_WRITE_IO_EX(
3815 struct ib_uverbs_ex_query_device,
3816 reserved,
3817 struct ib_uverbs_ex_query_device_resp,
3818 response_length),
3819 UAPI_DEF_METHOD_NEEDS_FN(query_device)),
3820 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext),
3821 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)),
3822
3823 DECLARE_UVERBS_OBJECT(
3824 UVERBS_OBJECT_FLOW,
3825 DECLARE_UVERBS_WRITE_EX(
3826 IB_USER_VERBS_EX_CMD_CREATE_FLOW,
3827 ib_uverbs_ex_create_flow,
3828 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow,
3829 flow_attr,
3830 struct ib_uverbs_create_flow_resp,
3831 flow_handle),
3832 UAPI_DEF_METHOD_NEEDS_FN(create_flow)),
3833 DECLARE_UVERBS_WRITE_EX(
3834 IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
3835 ib_uverbs_ex_destroy_flow,
3836 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow),
3837 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))),
3838
3839 DECLARE_UVERBS_OBJECT(
3840 UVERBS_OBJECT_MR,
3841 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR,
3842 ib_uverbs_dereg_mr,
3843 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr),
3844 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)),
3845 DECLARE_UVERBS_WRITE(
3846 IB_USER_VERBS_CMD_REG_MR,
3847 ib_uverbs_reg_mr,
3848 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr,
3849 struct ib_uverbs_reg_mr_resp),
3850 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)),
3851 DECLARE_UVERBS_WRITE(
3852 IB_USER_VERBS_CMD_REREG_MR,
3853 ib_uverbs_rereg_mr,
3854 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr,
3855 struct ib_uverbs_rereg_mr_resp),
3856 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))),
3857
3858 DECLARE_UVERBS_OBJECT(
3859 UVERBS_OBJECT_MW,
3860 DECLARE_UVERBS_WRITE(
3861 IB_USER_VERBS_CMD_ALLOC_MW,
3862 ib_uverbs_alloc_mw,
3863 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw,
3864 struct ib_uverbs_alloc_mw_resp),
3865 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)),
3866 DECLARE_UVERBS_WRITE(
3867 IB_USER_VERBS_CMD_DEALLOC_MW,
3868 ib_uverbs_dealloc_mw,
3869 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw),
3870 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))),
3871
3872 DECLARE_UVERBS_OBJECT(
3873 UVERBS_OBJECT_PD,
3874 DECLARE_UVERBS_WRITE(
3875 IB_USER_VERBS_CMD_ALLOC_PD,
3876 ib_uverbs_alloc_pd,
3877 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd,
3878 struct ib_uverbs_alloc_pd_resp),
3879 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)),
3880 DECLARE_UVERBS_WRITE(
3881 IB_USER_VERBS_CMD_DEALLOC_PD,
3882 ib_uverbs_dealloc_pd,
3883 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd),
3884 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))),
3885
3886 DECLARE_UVERBS_OBJECT(
3887 UVERBS_OBJECT_QP,
3888 DECLARE_UVERBS_WRITE(
3889 IB_USER_VERBS_CMD_ATTACH_MCAST,
3890 ib_uverbs_attach_mcast,
3891 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast),
3892 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast),
3893 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3894 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP,
3895 ib_uverbs_create_qp,
3896 UAPI_DEF_WRITE_UDATA_IO(
3897 struct ib_uverbs_create_qp,
3898 struct ib_uverbs_create_qp_resp),
3899 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3900 DECLARE_UVERBS_WRITE(
3901 IB_USER_VERBS_CMD_DESTROY_QP,
3902 ib_uverbs_destroy_qp,
3903 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp,
3904 struct ib_uverbs_destroy_qp_resp),
3905 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)),
3906 DECLARE_UVERBS_WRITE(
3907 IB_USER_VERBS_CMD_DETACH_MCAST,
3908 ib_uverbs_detach_mcast,
3909 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast),
3910 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3911 DECLARE_UVERBS_WRITE(
3912 IB_USER_VERBS_CMD_MODIFY_QP,
3913 ib_uverbs_modify_qp,
3914 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp),
3915 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)),
3916 DECLARE_UVERBS_WRITE(
3917 IB_USER_VERBS_CMD_POST_RECV,
3918 ib_uverbs_post_recv,
3919 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv,
3920 struct ib_uverbs_post_recv_resp),
3921 UAPI_DEF_METHOD_NEEDS_FN(post_recv)),
3922 DECLARE_UVERBS_WRITE(
3923 IB_USER_VERBS_CMD_POST_SEND,
3924 ib_uverbs_post_send,
3925 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send,
3926 struct ib_uverbs_post_send_resp),
3927 UAPI_DEF_METHOD_NEEDS_FN(post_send)),
3928 DECLARE_UVERBS_WRITE(
3929 IB_USER_VERBS_CMD_QUERY_QP,
3930 ib_uverbs_query_qp,
3931 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp,
3932 struct ib_uverbs_query_qp_resp),
3933 UAPI_DEF_METHOD_NEEDS_FN(query_qp)),
3934 DECLARE_UVERBS_WRITE_EX(
3935 IB_USER_VERBS_EX_CMD_CREATE_QP,
3936 ib_uverbs_ex_create_qp,
3937 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp,
3938 comp_mask,
3939 struct ib_uverbs_ex_create_qp_resp,
3940 response_length),
3941 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3942 DECLARE_UVERBS_WRITE_EX(
3943 IB_USER_VERBS_EX_CMD_MODIFY_QP,
3944 ib_uverbs_ex_modify_qp,
3945 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp,
3946 base,
3947 struct ib_uverbs_ex_modify_qp_resp,
3948 response_length),
3949 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))),
3950
3951 DECLARE_UVERBS_OBJECT(
3952 UVERBS_OBJECT_RWQ_IND_TBL,
3953 DECLARE_UVERBS_WRITE_EX(
3954 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
3955 ib_uverbs_ex_create_rwq_ind_table,
3956 UAPI_DEF_WRITE_IO_EX(
3957 struct ib_uverbs_ex_create_rwq_ind_table,
3958 log_ind_tbl_size,
3959 struct ib_uverbs_ex_create_rwq_ind_table_resp,
3960 ind_tbl_num),
3961 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)),
3962 DECLARE_UVERBS_WRITE_EX(
3963 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL,
3964 ib_uverbs_ex_destroy_rwq_ind_table,
3965 UAPI_DEF_WRITE_I(
3966 struct ib_uverbs_ex_destroy_rwq_ind_table),
3967 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))),
3968
3969 DECLARE_UVERBS_OBJECT(
3970 UVERBS_OBJECT_WQ,
3971 DECLARE_UVERBS_WRITE_EX(
3972 IB_USER_VERBS_EX_CMD_CREATE_WQ,
3973 ib_uverbs_ex_create_wq,
3974 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq,
3975 max_sge,
3976 struct ib_uverbs_ex_create_wq_resp,
3977 wqn),
3978 UAPI_DEF_METHOD_NEEDS_FN(create_wq)),
3979 DECLARE_UVERBS_WRITE_EX(
3980 IB_USER_VERBS_EX_CMD_DESTROY_WQ,
3981 ib_uverbs_ex_destroy_wq,
3982 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq,
3983 wq_handle,
3984 struct ib_uverbs_ex_destroy_wq_resp,
3985 reserved),
3986 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)),
3987 DECLARE_UVERBS_WRITE_EX(
3988 IB_USER_VERBS_EX_CMD_MODIFY_WQ,
3989 ib_uverbs_ex_modify_wq,
3990 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq,
3991 curr_wq_state),
3992 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))),
3993
3994 DECLARE_UVERBS_OBJECT(
3995 UVERBS_OBJECT_SRQ,
3996 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ,
3997 ib_uverbs_create_srq,
3998 UAPI_DEF_WRITE_UDATA_IO(
3999 struct ib_uverbs_create_srq,
4000 struct ib_uverbs_create_srq_resp),
4001 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4002 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ,
4003 ib_uverbs_create_xsrq,
4004 UAPI_DEF_WRITE_UDATA_IO(
4005 struct ib_uverbs_create_xsrq,
4006 struct ib_uverbs_create_srq_resp),
4007 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4008 DECLARE_UVERBS_WRITE(
4009 IB_USER_VERBS_CMD_DESTROY_SRQ,
4010 ib_uverbs_destroy_srq,
4011 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq,
4012 struct ib_uverbs_destroy_srq_resp),
4013 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)),
4014 DECLARE_UVERBS_WRITE(
4015 IB_USER_VERBS_CMD_MODIFY_SRQ,
4016 ib_uverbs_modify_srq,
4017 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq),
4018 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)),
4019 DECLARE_UVERBS_WRITE(
4020 IB_USER_VERBS_CMD_POST_SRQ_RECV,
4021 ib_uverbs_post_srq_recv,
4022 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv,
4023 struct ib_uverbs_post_srq_recv_resp),
4024 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)),
4025 DECLARE_UVERBS_WRITE(
4026 IB_USER_VERBS_CMD_QUERY_SRQ,
4027 ib_uverbs_query_srq,
4028 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq,
4029 struct ib_uverbs_query_srq_resp),
4030 UAPI_DEF_METHOD_NEEDS_FN(query_srq))),
4031
4032 DECLARE_UVERBS_OBJECT(
4033 UVERBS_OBJECT_XRCD,
4034 DECLARE_UVERBS_WRITE(
4035 IB_USER_VERBS_CMD_CLOSE_XRCD,
4036 ib_uverbs_close_xrcd,
4037 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd)),
4038 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP,
4039 ib_uverbs_open_qp,
4040 UAPI_DEF_WRITE_UDATA_IO(
4041 struct ib_uverbs_open_qp,
4042 struct ib_uverbs_create_qp_resp)),
4043 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD,
4044 ib_uverbs_open_xrcd,
4045 UAPI_DEF_WRITE_UDATA_IO(
4046 struct ib_uverbs_open_xrcd,
4047 struct ib_uverbs_open_xrcd_resp)),
4048 UAPI_DEF_OBJ_NEEDS_FN(alloc_xrcd),
4049 UAPI_DEF_OBJ_NEEDS_FN(dealloc_xrcd)),
4050
4051 {},
4052 };
4053