This source file includes following definitions.
- uverbs_response
- uverbs_request
- uverbs_response_length
- uverbs_request_start
- uverbs_request_next
- uverbs_request_next_ptr
- uverbs_request_finish
- uverbs_get_cleared_udata
- _ib_uverbs_lookup_comp_file
- ib_uverbs_get_context
- copy_query_dev_fields
- ib_uverbs_query_device
- ib_uverbs_query_port
- ib_uverbs_alloc_pd
- ib_uverbs_dealloc_pd
- xrcd_table_insert
- xrcd_table_search
- find_xrcd
- xrcd_table_delete
- ib_uverbs_open_xrcd
- ib_uverbs_close_xrcd
- ib_uverbs_dealloc_xrcd
- ib_uverbs_reg_mr
- ib_uverbs_rereg_mr
- ib_uverbs_dereg_mr
- ib_uverbs_alloc_mw
- ib_uverbs_dealloc_mw
- ib_uverbs_create_comp_channel
- create_cq
- ib_uverbs_create_cq
- ib_uverbs_ex_create_cq
- ib_uverbs_resize_cq
- copy_wc_to_user
- ib_uverbs_poll_cq
- ib_uverbs_req_notify_cq
- ib_uverbs_destroy_cq
- create_qp
- ib_uverbs_create_qp
- ib_uverbs_ex_create_qp
- ib_uverbs_open_qp
- copy_ah_attr_to_uverbs
- ib_uverbs_query_qp
- modify_qp_mask
- copy_ah_attr_from_uverbs
- modify_qp
- ib_uverbs_modify_qp
- ib_uverbs_ex_modify_qp
- ib_uverbs_destroy_qp
- alloc_wr
- ib_uverbs_post_send
- ib_uverbs_unmarshall_recv
- ib_uverbs_post_recv
- ib_uverbs_post_srq_recv
- ib_uverbs_create_ah
- ib_uverbs_destroy_ah
- ib_uverbs_attach_mcast
- ib_uverbs_detach_mcast
- flow_resources_alloc
- ib_uverbs_flow_resources_free
- flow_resources_add
- kern_spec_to_ib_spec_action
- spec_filter_size
- ib_uverbs_kern_spec_to_ib_spec_filter
- kern_spec_to_ib_spec_filter
- kern_spec_to_ib_spec
- ib_uverbs_ex_create_wq
- ib_uverbs_ex_destroy_wq
- ib_uverbs_ex_modify_wq
- ib_uverbs_ex_create_rwq_ind_table
- ib_uverbs_ex_destroy_rwq_ind_table
- ib_uverbs_ex_create_flow
- ib_uverbs_ex_destroy_flow
- __uverbs_create_xsrq
- ib_uverbs_create_srq
- ib_uverbs_create_xsrq
- ib_uverbs_modify_srq
- ib_uverbs_query_srq
- ib_uverbs_destroy_srq
- ib_uverbs_ex_query_device
- ib_uverbs_ex_modify_cq
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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
52
53
54
55
56
57
58 static int uverbs_response(struct uverbs_attr_bundle *attrs, const void *resp,
59 size_t resp_len)
60 {
61 int ret;
62
63 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
64 return uverbs_copy_to_struct_or_zero(
65 attrs, UVERBS_ATTR_CORE_OUT, resp, resp_len);
66
67 if (copy_to_user(attrs->ucore.outbuf, resp,
68 min(attrs->ucore.outlen, resp_len)))
69 return -EFAULT;
70
71 if (resp_len < attrs->ucore.outlen) {
72
73
74
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
87
88
89
90
91 static int uverbs_request(struct uverbs_attr_bundle *attrs, void *req,
92 size_t req_len)
93 {
94 if (copy_from_user(req, attrs->ucore.inbuf,
95 min(attrs->ucore.inlen, req_len)))
96 return -EFAULT;
97
98 if (attrs->ucore.inlen < req_len) {
99 memset(req + attrs->ucore.inlen, 0,
100 req_len - attrs->ucore.inlen);
101 } else if (attrs->ucore.inlen > req_len) {
102 if (!ib_is_buffer_cleared(attrs->ucore.inbuf + req_len,
103 attrs->ucore.inlen - req_len))
104 return -EOPNOTSUPP;
105 }
106 return 0;
107 }
108
109
110
111
112
113
114
115 static u32 uverbs_response_length(struct uverbs_attr_bundle *attrs,
116 size_t resp_len)
117 {
118 return min_t(size_t, attrs->ucore.outlen, resp_len);
119 }
120
121
122
123
124
125 struct uverbs_req_iter {
126 const void __user *cur;
127 const void __user *end;
128 };
129
130 static int uverbs_request_start(struct uverbs_attr_bundle *attrs,
131 struct uverbs_req_iter *iter,
132 void *req,
133 size_t req_len)
134 {
135 if (attrs->ucore.inlen < req_len)
136 return -ENOSPC;
137
138 if (copy_from_user(req, attrs->ucore.inbuf, req_len))
139 return -EFAULT;
140
141 iter->cur = attrs->ucore.inbuf + req_len;
142 iter->end = attrs->ucore.inbuf + attrs->ucore.inlen;
143 return 0;
144 }
145
146 static int uverbs_request_next(struct uverbs_req_iter *iter, void *val,
147 size_t len)
148 {
149 if (iter->cur + len > iter->end)
150 return -ENOSPC;
151
152 if (copy_from_user(val, iter->cur, len))
153 return -EFAULT;
154
155 iter->cur += len;
156 return 0;
157 }
158
159 static const void __user *uverbs_request_next_ptr(struct uverbs_req_iter *iter,
160 size_t len)
161 {
162 const void __user *res = iter->cur;
163
164 if (iter->cur + len > iter->end)
165 return (void __force __user *)ERR_PTR(-ENOSPC);
166 iter->cur += len;
167 return res;
168 }
169
170 static int uverbs_request_finish(struct uverbs_req_iter *iter)
171 {
172 if (!ib_is_buffer_cleared(iter->cur, iter->end - iter->cur))
173 return -EOPNOTSUPP;
174 return 0;
175 }
176
177
178
179
180
181
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 *
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
206 static int ib_uverbs_get_context(struct uverbs_attr_bundle *attrs)
207 {
208 struct ib_uverbs_file *file = attrs->ufile;
209 struct ib_uverbs_get_context cmd;
210 struct ib_uverbs_get_context_resp resp;
211 struct ib_ucontext *ucontext;
212 struct file *filp;
213 struct ib_rdmacg_object cg_obj;
214 struct ib_device *ib_dev;
215 int ret;
216
217 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
218 if (ret)
219 return ret;
220
221 mutex_lock(&file->ucontext_lock);
222 ib_dev = srcu_dereference(file->device->ib_dev,
223 &file->device->disassociate_srcu);
224 if (!ib_dev) {
225 ret = -EIO;
226 goto err;
227 }
228
229 if (file->ucontext) {
230 ret = -EINVAL;
231 goto err;
232 }
233
234 ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
235 if (ret)
236 goto err;
237
238 ucontext = rdma_zalloc_drv_obj(ib_dev, ib_ucontext);
239 if (!ucontext) {
240 ret = -ENOMEM;
241 goto err_alloc;
242 }
243
244 attrs->context = ucontext;
245
246 ucontext->res.type = RDMA_RESTRACK_CTX;
247 ucontext->device = ib_dev;
248 ucontext->cg_obj = cg_obj;
249
250 ucontext->ufile = file;
251
252 ucontext->closing = false;
253 ucontext->cleanup_retryable = false;
254
255 ret = get_unused_fd_flags(O_CLOEXEC);
256 if (ret < 0)
257 goto err_free;
258 resp.async_fd = ret;
259
260 filp = ib_uverbs_alloc_async_event_file(file, ib_dev);
261 if (IS_ERR(filp)) {
262 ret = PTR_ERR(filp);
263 goto err_fd;
264 }
265
266 resp.num_comp_vectors = file->device->num_comp_vectors;
267
268 ret = uverbs_response(attrs, &resp, sizeof(resp));
269 if (ret)
270 goto err_file;
271
272 ret = ib_dev->ops.alloc_ucontext(ucontext, &attrs->driver_udata);
273 if (ret)
274 goto err_file;
275
276 rdma_restrack_uadd(&ucontext->res);
277
278 fd_install(resp.async_fd, filp);
279
280
281
282
283
284 smp_store_release(&file->ucontext, ucontext);
285
286 mutex_unlock(&file->ucontext_lock);
287
288 return 0;
289
290 err_file:
291 ib_uverbs_free_async_event_file(file);
292 fput(filp);
293
294 err_fd:
295 put_unused_fd(resp.async_fd);
296
297 err_free:
298 kfree(ucontext);
299
300 err_alloc:
301 ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
302
303 err:
304 mutex_unlock(&file->ucontext_lock);
305 return ret;
306 }
307
308 static void copy_query_dev_fields(struct ib_ucontext *ucontext,
309 struct ib_uverbs_query_device_resp *resp,
310 struct ib_device_attr *attr)
311 {
312 struct ib_device *ib_dev = ucontext->device;
313
314 resp->fw_ver = attr->fw_ver;
315 resp->node_guid = ib_dev->node_guid;
316 resp->sys_image_guid = attr->sys_image_guid;
317 resp->max_mr_size = attr->max_mr_size;
318 resp->page_size_cap = attr->page_size_cap;
319 resp->vendor_id = attr->vendor_id;
320 resp->vendor_part_id = attr->vendor_part_id;
321 resp->hw_ver = attr->hw_ver;
322 resp->max_qp = attr->max_qp;
323 resp->max_qp_wr = attr->max_qp_wr;
324 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags);
325 resp->max_sge = min(attr->max_send_sge, attr->max_recv_sge);
326 resp->max_sge_rd = attr->max_sge_rd;
327 resp->max_cq = attr->max_cq;
328 resp->max_cqe = attr->max_cqe;
329 resp->max_mr = attr->max_mr;
330 resp->max_pd = attr->max_pd;
331 resp->max_qp_rd_atom = attr->max_qp_rd_atom;
332 resp->max_ee_rd_atom = attr->max_ee_rd_atom;
333 resp->max_res_rd_atom = attr->max_res_rd_atom;
334 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom;
335 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom;
336 resp->atomic_cap = attr->atomic_cap;
337 resp->max_ee = attr->max_ee;
338 resp->max_rdd = attr->max_rdd;
339 resp->max_mw = attr->max_mw;
340 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp;
341 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp;
342 resp->max_mcast_grp = attr->max_mcast_grp;
343 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
344 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
345 resp->max_ah = attr->max_ah;
346 resp->max_fmr = attr->max_fmr;
347 resp->max_map_per_fmr = attr->max_map_per_fmr;
348 resp->max_srq = attr->max_srq;
349 resp->max_srq_wr = attr->max_srq_wr;
350 resp->max_srq_sge = attr->max_srq_sge;
351 resp->max_pkeys = attr->max_pkeys;
352 resp->local_ca_ack_delay = attr->local_ca_ack_delay;
353 resp->phys_port_cnt = ib_dev->phys_port_cnt;
354 }
355
356 static int ib_uverbs_query_device(struct uverbs_attr_bundle *attrs)
357 {
358 struct ib_uverbs_query_device cmd;
359 struct ib_uverbs_query_device_resp resp;
360 struct ib_ucontext *ucontext;
361 int ret;
362
363 ucontext = ib_uverbs_get_ucontext(attrs);
364 if (IS_ERR(ucontext))
365 return PTR_ERR(ucontext);
366
367 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
368 if (ret)
369 return ret;
370
371 memset(&resp, 0, sizeof resp);
372 copy_query_dev_fields(ucontext, &resp, &ucontext->device->attrs);
373
374 return uverbs_response(attrs, &resp, sizeof(resp));
375 }
376
377 static int ib_uverbs_query_port(struct uverbs_attr_bundle *attrs)
378 {
379 struct ib_uverbs_query_port cmd;
380 struct ib_uverbs_query_port_resp resp;
381 struct ib_port_attr attr;
382 int ret;
383 struct ib_ucontext *ucontext;
384 struct ib_device *ib_dev;
385
386 ucontext = ib_uverbs_get_ucontext(attrs);
387 if (IS_ERR(ucontext))
388 return PTR_ERR(ucontext);
389 ib_dev = ucontext->device;
390
391 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
392 if (ret)
393 return ret;
394
395 ret = ib_query_port(ib_dev, cmd.port_num, &attr);
396 if (ret)
397 return ret;
398
399 memset(&resp, 0, sizeof resp);
400 copy_port_attr_to_resp(&attr, &resp, ib_dev, cmd.port_num);
401
402 return uverbs_response(attrs, &resp, sizeof(resp));
403 }
404
405 static int ib_uverbs_alloc_pd(struct uverbs_attr_bundle *attrs)
406 {
407 struct ib_uverbs_alloc_pd cmd;
408 struct ib_uverbs_alloc_pd_resp resp;
409 struct ib_uobject *uobj;
410 struct ib_pd *pd;
411 int ret;
412 struct ib_device *ib_dev;
413
414 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
415 if (ret)
416 return ret;
417
418 uobj = uobj_alloc(UVERBS_OBJECT_PD, attrs, &ib_dev);
419 if (IS_ERR(uobj))
420 return PTR_ERR(uobj);
421
422 pd = rdma_zalloc_drv_obj(ib_dev, ib_pd);
423 if (!pd) {
424 ret = -ENOMEM;
425 goto err;
426 }
427
428 pd->device = ib_dev;
429 pd->uobject = uobj;
430 pd->__internal_mr = NULL;
431 atomic_set(&pd->usecnt, 0);
432 pd->res.type = RDMA_RESTRACK_PD;
433
434 ret = ib_dev->ops.alloc_pd(pd, &attrs->driver_udata);
435 if (ret)
436 goto err_alloc;
437
438 uobj->object = pd;
439 memset(&resp, 0, sizeof resp);
440 resp.pd_handle = uobj->id;
441 rdma_restrack_uadd(&pd->res);
442
443 ret = uverbs_response(attrs, &resp, sizeof(resp));
444 if (ret)
445 goto err_copy;
446
447 return uobj_alloc_commit(uobj, attrs);
448
449 err_copy:
450 ib_dealloc_pd_user(pd, uverbs_get_cleared_udata(attrs));
451 pd = NULL;
452 err_alloc:
453 kfree(pd);
454 err:
455 uobj_alloc_abort(uobj, attrs);
456 return ret;
457 }
458
459 static int ib_uverbs_dealloc_pd(struct uverbs_attr_bundle *attrs)
460 {
461 struct ib_uverbs_dealloc_pd cmd;
462 int ret;
463
464 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
465 if (ret)
466 return ret;
467
468 return uobj_perform_destroy(UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
469 }
470
471 struct xrcd_table_entry {
472 struct rb_node node;
473 struct ib_xrcd *xrcd;
474 struct inode *inode;
475 };
476
477 static int xrcd_table_insert(struct ib_uverbs_device *dev,
478 struct inode *inode,
479 struct ib_xrcd *xrcd)
480 {
481 struct xrcd_table_entry *entry, *scan;
482 struct rb_node **p = &dev->xrcd_tree.rb_node;
483 struct rb_node *parent = NULL;
484
485 entry = kmalloc(sizeof *entry, GFP_KERNEL);
486 if (!entry)
487 return -ENOMEM;
488
489 entry->xrcd = xrcd;
490 entry->inode = inode;
491
492 while (*p) {
493 parent = *p;
494 scan = rb_entry(parent, struct xrcd_table_entry, node);
495
496 if (inode < scan->inode) {
497 p = &(*p)->rb_left;
498 } else if (inode > scan->inode) {
499 p = &(*p)->rb_right;
500 } else {
501 kfree(entry);
502 return -EEXIST;
503 }
504 }
505
506 rb_link_node(&entry->node, parent, p);
507 rb_insert_color(&entry->node, &dev->xrcd_tree);
508 igrab(inode);
509 return 0;
510 }
511
512 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
513 struct inode *inode)
514 {
515 struct xrcd_table_entry *entry;
516 struct rb_node *p = dev->xrcd_tree.rb_node;
517
518 while (p) {
519 entry = rb_entry(p, struct xrcd_table_entry, node);
520
521 if (inode < entry->inode)
522 p = p->rb_left;
523 else if (inode > entry->inode)
524 p = p->rb_right;
525 else
526 return entry;
527 }
528
529 return NULL;
530 }
531
532 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
533 {
534 struct xrcd_table_entry *entry;
535
536 entry = xrcd_table_search(dev, inode);
537 if (!entry)
538 return NULL;
539
540 return entry->xrcd;
541 }
542
543 static void xrcd_table_delete(struct ib_uverbs_device *dev,
544 struct inode *inode)
545 {
546 struct xrcd_table_entry *entry;
547
548 entry = xrcd_table_search(dev, inode);
549 if (entry) {
550 iput(inode);
551 rb_erase(&entry->node, &dev->xrcd_tree);
552 kfree(entry);
553 }
554 }
555
556 static int ib_uverbs_open_xrcd(struct uverbs_attr_bundle *attrs)
557 {
558 struct ib_uverbs_device *ibudev = attrs->ufile->device;
559 struct ib_uverbs_open_xrcd cmd;
560 struct ib_uverbs_open_xrcd_resp resp;
561 struct ib_uxrcd_object *obj;
562 struct ib_xrcd *xrcd = NULL;
563 struct fd f = {NULL, 0};
564 struct inode *inode = NULL;
565 int ret = 0;
566 int new_xrcd = 0;
567 struct ib_device *ib_dev;
568
569 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
570 if (ret)
571 return ret;
572
573 mutex_lock(&ibudev->xrcd_tree_mutex);
574
575 if (cmd.fd != -1) {
576
577 f = fdget(cmd.fd);
578 if (!f.file) {
579 ret = -EBADF;
580 goto err_tree_mutex_unlock;
581 }
582
583 inode = file_inode(f.file);
584 xrcd = find_xrcd(ibudev, inode);
585 if (!xrcd && !(cmd.oflags & O_CREAT)) {
586
587 ret = -EAGAIN;
588 goto err_tree_mutex_unlock;
589 }
590
591 if (xrcd && cmd.oflags & O_EXCL) {
592 ret = -EINVAL;
593 goto err_tree_mutex_unlock;
594 }
595 }
596
597 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD, attrs,
598 &ib_dev);
599 if (IS_ERR(obj)) {
600 ret = PTR_ERR(obj);
601 goto err_tree_mutex_unlock;
602 }
603
604 if (!xrcd) {
605 xrcd = ib_dev->ops.alloc_xrcd(ib_dev, &attrs->driver_udata);
606 if (IS_ERR(xrcd)) {
607 ret = PTR_ERR(xrcd);
608 goto err;
609 }
610
611 xrcd->inode = inode;
612 xrcd->device = ib_dev;
613 atomic_set(&xrcd->usecnt, 0);
614 mutex_init(&xrcd->tgt_qp_mutex);
615 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
616 new_xrcd = 1;
617 }
618
619 atomic_set(&obj->refcnt, 0);
620 obj->uobject.object = xrcd;
621 memset(&resp, 0, sizeof resp);
622 resp.xrcd_handle = obj->uobject.id;
623
624 if (inode) {
625 if (new_xrcd) {
626
627 ret = xrcd_table_insert(ibudev, inode, xrcd);
628 if (ret)
629 goto err_dealloc_xrcd;
630 }
631 atomic_inc(&xrcd->usecnt);
632 }
633
634 ret = uverbs_response(attrs, &resp, sizeof(resp));
635 if (ret)
636 goto err_copy;
637
638 if (f.file)
639 fdput(f);
640
641 mutex_unlock(&ibudev->xrcd_tree_mutex);
642
643 return uobj_alloc_commit(&obj->uobject, attrs);
644
645 err_copy:
646 if (inode) {
647 if (new_xrcd)
648 xrcd_table_delete(ibudev, inode);
649 atomic_dec(&xrcd->usecnt);
650 }
651
652 err_dealloc_xrcd:
653 ib_dealloc_xrcd(xrcd, uverbs_get_cleared_udata(attrs));
654
655 err:
656 uobj_alloc_abort(&obj->uobject, attrs);
657
658 err_tree_mutex_unlock:
659 if (f.file)
660 fdput(f);
661
662 mutex_unlock(&ibudev->xrcd_tree_mutex);
663
664 return ret;
665 }
666
667 static int ib_uverbs_close_xrcd(struct uverbs_attr_bundle *attrs)
668 {
669 struct ib_uverbs_close_xrcd cmd;
670 int ret;
671
672 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
673 if (ret)
674 return ret;
675
676 return uobj_perform_destroy(UVERBS_OBJECT_XRCD, cmd.xrcd_handle, attrs);
677 }
678
679 int ib_uverbs_dealloc_xrcd(struct ib_uobject *uobject, struct ib_xrcd *xrcd,
680 enum rdma_remove_reason why,
681 struct uverbs_attr_bundle *attrs)
682 {
683 struct inode *inode;
684 int ret;
685 struct ib_uverbs_device *dev = attrs->ufile->device;
686
687 inode = xrcd->inode;
688 if (inode && !atomic_dec_and_test(&xrcd->usecnt))
689 return 0;
690
691 ret = ib_dealloc_xrcd(xrcd, &attrs->driver_udata);
692
693 if (ib_is_destroy_retryable(ret, why, uobject)) {
694 atomic_inc(&xrcd->usecnt);
695 return ret;
696 }
697
698 if (inode)
699 xrcd_table_delete(dev, inode);
700
701 return ret;
702 }
703
704 static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs)
705 {
706 struct ib_uverbs_reg_mr cmd;
707 struct ib_uverbs_reg_mr_resp resp;
708 struct ib_uobject *uobj;
709 struct ib_pd *pd;
710 struct ib_mr *mr;
711 int ret;
712 struct ib_device *ib_dev;
713
714 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
715 if (ret)
716 return ret;
717
718 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
719 return -EINVAL;
720
721 ret = ib_check_mr_access(cmd.access_flags);
722 if (ret)
723 return ret;
724
725 uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev);
726 if (IS_ERR(uobj))
727 return PTR_ERR(uobj);
728
729 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
730 if (!pd) {
731 ret = -EINVAL;
732 goto err_free;
733 }
734
735 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) {
736 if (!(pd->device->attrs.device_cap_flags &
737 IB_DEVICE_ON_DEMAND_PAGING)) {
738 pr_debug("ODP support not available\n");
739 ret = -EINVAL;
740 goto err_put;
741 }
742 }
743
744 mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
745 cmd.access_flags,
746 &attrs->driver_udata);
747 if (IS_ERR(mr)) {
748 ret = PTR_ERR(mr);
749 goto err_put;
750 }
751
752 mr->device = pd->device;
753 mr->pd = pd;
754 mr->type = IB_MR_TYPE_USER;
755 mr->dm = NULL;
756 mr->sig_attrs = NULL;
757 mr->uobject = uobj;
758 atomic_inc(&pd->usecnt);
759 mr->res.type = RDMA_RESTRACK_MR;
760 rdma_restrack_uadd(&mr->res);
761
762 uobj->object = mr;
763
764 memset(&resp, 0, sizeof resp);
765 resp.lkey = mr->lkey;
766 resp.rkey = mr->rkey;
767 resp.mr_handle = uobj->id;
768
769 ret = uverbs_response(attrs, &resp, sizeof(resp));
770 if (ret)
771 goto err_copy;
772
773 uobj_put_obj_read(pd);
774
775 return uobj_alloc_commit(uobj, attrs);
776
777 err_copy:
778 ib_dereg_mr_user(mr, uverbs_get_cleared_udata(attrs));
779
780 err_put:
781 uobj_put_obj_read(pd);
782
783 err_free:
784 uobj_alloc_abort(uobj, attrs);
785 return ret;
786 }
787
788 static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs)
789 {
790 struct ib_uverbs_rereg_mr cmd;
791 struct ib_uverbs_rereg_mr_resp resp;
792 struct ib_pd *pd = NULL;
793 struct ib_mr *mr;
794 struct ib_pd *old_pd;
795 int ret;
796 struct ib_uobject *uobj;
797
798 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
799 if (ret)
800 return ret;
801
802 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags)
803 return -EINVAL;
804
805 if ((cmd.flags & IB_MR_REREG_TRANS) &&
806 (!cmd.start || !cmd.hca_va || 0 >= cmd.length ||
807 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)))
808 return -EINVAL;
809
810 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
811 if (IS_ERR(uobj))
812 return PTR_ERR(uobj);
813
814 mr = uobj->object;
815
816 if (mr->dm) {
817 ret = -EINVAL;
818 goto put_uobjs;
819 }
820
821 if (cmd.flags & IB_MR_REREG_ACCESS) {
822 ret = ib_check_mr_access(cmd.access_flags);
823 if (ret)
824 goto put_uobjs;
825 }
826
827 if (cmd.flags & IB_MR_REREG_PD) {
828 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle,
829 attrs);
830 if (!pd) {
831 ret = -EINVAL;
832 goto put_uobjs;
833 }
834 }
835
836 old_pd = mr->pd;
837 ret = mr->device->ops.rereg_user_mr(mr, cmd.flags, cmd.start,
838 cmd.length, cmd.hca_va,
839 cmd.access_flags, pd,
840 &attrs->driver_udata);
841 if (ret)
842 goto put_uobj_pd;
843
844 if (cmd.flags & IB_MR_REREG_PD) {
845 atomic_inc(&pd->usecnt);
846 mr->pd = pd;
847 atomic_dec(&old_pd->usecnt);
848 }
849
850 memset(&resp, 0, sizeof(resp));
851 resp.lkey = mr->lkey;
852 resp.rkey = mr->rkey;
853
854 ret = uverbs_response(attrs, &resp, sizeof(resp));
855
856 put_uobj_pd:
857 if (cmd.flags & IB_MR_REREG_PD)
858 uobj_put_obj_read(pd);
859
860 put_uobjs:
861 uobj_put_write(uobj);
862
863 return ret;
864 }
865
866 static int ib_uverbs_dereg_mr(struct uverbs_attr_bundle *attrs)
867 {
868 struct ib_uverbs_dereg_mr cmd;
869 int ret;
870
871 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
872 if (ret)
873 return ret;
874
875 return uobj_perform_destroy(UVERBS_OBJECT_MR, cmd.mr_handle, attrs);
876 }
877
878 static int ib_uverbs_alloc_mw(struct uverbs_attr_bundle *attrs)
879 {
880 struct ib_uverbs_alloc_mw cmd;
881 struct ib_uverbs_alloc_mw_resp resp;
882 struct ib_uobject *uobj;
883 struct ib_pd *pd;
884 struct ib_mw *mw;
885 int ret;
886 struct ib_device *ib_dev;
887
888 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
889 if (ret)
890 return ret;
891
892 uobj = uobj_alloc(UVERBS_OBJECT_MW, attrs, &ib_dev);
893 if (IS_ERR(uobj))
894 return PTR_ERR(uobj);
895
896 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
897 if (!pd) {
898 ret = -EINVAL;
899 goto err_free;
900 }
901
902 if (cmd.mw_type != IB_MW_TYPE_1 && cmd.mw_type != IB_MW_TYPE_2) {
903 ret = -EINVAL;
904 goto err_put;
905 }
906
907 mw = pd->device->ops.alloc_mw(pd, cmd.mw_type, &attrs->driver_udata);
908 if (IS_ERR(mw)) {
909 ret = PTR_ERR(mw);
910 goto err_put;
911 }
912
913 mw->device = pd->device;
914 mw->pd = pd;
915 mw->uobject = uobj;
916 atomic_inc(&pd->usecnt);
917
918 uobj->object = mw;
919
920 memset(&resp, 0, sizeof(resp));
921 resp.rkey = mw->rkey;
922 resp.mw_handle = uobj->id;
923
924 ret = uverbs_response(attrs, &resp, sizeof(resp));
925 if (ret)
926 goto err_copy;
927
928 uobj_put_obj_read(pd);
929 return uobj_alloc_commit(uobj, attrs);
930
931 err_copy:
932 uverbs_dealloc_mw(mw);
933 err_put:
934 uobj_put_obj_read(pd);
935 err_free:
936 uobj_alloc_abort(uobj, attrs);
937 return ret;
938 }
939
940 static int ib_uverbs_dealloc_mw(struct uverbs_attr_bundle *attrs)
941 {
942 struct ib_uverbs_dealloc_mw cmd;
943 int ret;
944
945 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
946 if (ret)
947 return ret;
948
949 return uobj_perform_destroy(UVERBS_OBJECT_MW, cmd.mw_handle, attrs);
950 }
951
952 static int ib_uverbs_create_comp_channel(struct uverbs_attr_bundle *attrs)
953 {
954 struct ib_uverbs_create_comp_channel cmd;
955 struct ib_uverbs_create_comp_channel_resp resp;
956 struct ib_uobject *uobj;
957 struct ib_uverbs_completion_event_file *ev_file;
958 struct ib_device *ib_dev;
959 int ret;
960
961 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
962 if (ret)
963 return ret;
964
965 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, attrs, &ib_dev);
966 if (IS_ERR(uobj))
967 return PTR_ERR(uobj);
968
969 resp.fd = uobj->id;
970
971 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file,
972 uobj);
973 ib_uverbs_init_event_queue(&ev_file->ev_queue);
974
975 ret = uverbs_response(attrs, &resp, sizeof(resp));
976 if (ret) {
977 uobj_alloc_abort(uobj, attrs);
978 return ret;
979 }
980
981 return uobj_alloc_commit(uobj, attrs);
982 }
983
984 static struct ib_ucq_object *create_cq(struct uverbs_attr_bundle *attrs,
985 struct ib_uverbs_ex_create_cq *cmd)
986 {
987 struct ib_ucq_object *obj;
988 struct ib_uverbs_completion_event_file *ev_file = NULL;
989 struct ib_cq *cq;
990 int ret;
991 struct ib_uverbs_ex_create_cq_resp resp;
992 struct ib_cq_init_attr attr = {};
993 struct ib_device *ib_dev;
994
995 if (cmd->comp_vector >= attrs->ufile->device->num_comp_vectors)
996 return ERR_PTR(-EINVAL);
997
998 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ, attrs,
999 &ib_dev);
1000 if (IS_ERR(obj))
1001 return obj;
1002
1003 if (cmd->comp_channel >= 0) {
1004 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel, attrs);
1005 if (IS_ERR(ev_file)) {
1006 ret = PTR_ERR(ev_file);
1007 goto err;
1008 }
1009 }
1010
1011 obj->uobject.user_handle = cmd->user_handle;
1012 obj->comp_events_reported = 0;
1013 obj->async_events_reported = 0;
1014 INIT_LIST_HEAD(&obj->comp_list);
1015 INIT_LIST_HEAD(&obj->async_list);
1016
1017 attr.cqe = cmd->cqe;
1018 attr.comp_vector = cmd->comp_vector;
1019 attr.flags = cmd->flags;
1020
1021 cq = rdma_zalloc_drv_obj(ib_dev, ib_cq);
1022 if (!cq) {
1023 ret = -ENOMEM;
1024 goto err_file;
1025 }
1026 cq->device = ib_dev;
1027 cq->uobject = &obj->uobject;
1028 cq->comp_handler = ib_uverbs_comp_handler;
1029 cq->event_handler = ib_uverbs_cq_event_handler;
1030 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
1031 atomic_set(&cq->usecnt, 0);
1032
1033 ret = ib_dev->ops.create_cq(cq, &attr, &attrs->driver_udata);
1034 if (ret)
1035 goto err_free;
1036
1037 obj->uobject.object = cq;
1038 memset(&resp, 0, sizeof resp);
1039 resp.base.cq_handle = obj->uobject.id;
1040 resp.base.cqe = cq->cqe;
1041 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1042
1043 cq->res.type = RDMA_RESTRACK_CQ;
1044 rdma_restrack_uadd(&cq->res);
1045
1046 ret = uverbs_response(attrs, &resp, sizeof(resp));
1047 if (ret)
1048 goto err_cb;
1049
1050 ret = uobj_alloc_commit(&obj->uobject, attrs);
1051 if (ret)
1052 return ERR_PTR(ret);
1053 return obj;
1054
1055 err_cb:
1056 ib_destroy_cq_user(cq, uverbs_get_cleared_udata(attrs));
1057 cq = NULL;
1058 err_free:
1059 kfree(cq);
1060 err_file:
1061 if (ev_file)
1062 ib_uverbs_release_ucq(attrs->ufile, ev_file, obj);
1063
1064 err:
1065 uobj_alloc_abort(&obj->uobject, attrs);
1066
1067 return ERR_PTR(ret);
1068 }
1069
1070 static int ib_uverbs_create_cq(struct uverbs_attr_bundle *attrs)
1071 {
1072 struct ib_uverbs_create_cq cmd;
1073 struct ib_uverbs_ex_create_cq cmd_ex;
1074 struct ib_ucq_object *obj;
1075 int ret;
1076
1077 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1078 if (ret)
1079 return ret;
1080
1081 memset(&cmd_ex, 0, sizeof(cmd_ex));
1082 cmd_ex.user_handle = cmd.user_handle;
1083 cmd_ex.cqe = cmd.cqe;
1084 cmd_ex.comp_vector = cmd.comp_vector;
1085 cmd_ex.comp_channel = cmd.comp_channel;
1086
1087 obj = create_cq(attrs, &cmd_ex);
1088 return PTR_ERR_OR_ZERO(obj);
1089 }
1090
1091 static int ib_uverbs_ex_create_cq(struct uverbs_attr_bundle *attrs)
1092 {
1093 struct ib_uverbs_ex_create_cq cmd;
1094 struct ib_ucq_object *obj;
1095 int ret;
1096
1097 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1098 if (ret)
1099 return ret;
1100
1101 if (cmd.comp_mask)
1102 return -EINVAL;
1103
1104 if (cmd.reserved)
1105 return -EINVAL;
1106
1107 obj = create_cq(attrs, &cmd);
1108 return PTR_ERR_OR_ZERO(obj);
1109 }
1110
1111 static int ib_uverbs_resize_cq(struct uverbs_attr_bundle *attrs)
1112 {
1113 struct ib_uverbs_resize_cq cmd;
1114 struct ib_uverbs_resize_cq_resp resp = {};
1115 struct ib_cq *cq;
1116 int ret = -EINVAL;
1117
1118 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1119 if (ret)
1120 return ret;
1121
1122 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1123 if (!cq)
1124 return -EINVAL;
1125
1126 ret = cq->device->ops.resize_cq(cq, cmd.cqe, &attrs->driver_udata);
1127 if (ret)
1128 goto out;
1129
1130 resp.cqe = cq->cqe;
1131
1132 ret = uverbs_response(attrs, &resp, sizeof(resp));
1133 out:
1134 uobj_put_obj_read(cq);
1135
1136 return ret;
1137 }
1138
1139 static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest,
1140 struct ib_wc *wc)
1141 {
1142 struct ib_uverbs_wc tmp;
1143
1144 tmp.wr_id = wc->wr_id;
1145 tmp.status = wc->status;
1146 tmp.opcode = wc->opcode;
1147 tmp.vendor_err = wc->vendor_err;
1148 tmp.byte_len = wc->byte_len;
1149 tmp.ex.imm_data = wc->ex.imm_data;
1150 tmp.qp_num = wc->qp->qp_num;
1151 tmp.src_qp = wc->src_qp;
1152 tmp.wc_flags = wc->wc_flags;
1153 tmp.pkey_index = wc->pkey_index;
1154 if (rdma_cap_opa_ah(ib_dev, wc->port_num))
1155 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid);
1156 else
1157 tmp.slid = ib_lid_cpu16(wc->slid);
1158 tmp.sl = wc->sl;
1159 tmp.dlid_path_bits = wc->dlid_path_bits;
1160 tmp.port_num = wc->port_num;
1161 tmp.reserved = 0;
1162
1163 if (copy_to_user(dest, &tmp, sizeof tmp))
1164 return -EFAULT;
1165
1166 return 0;
1167 }
1168
1169 static int ib_uverbs_poll_cq(struct uverbs_attr_bundle *attrs)
1170 {
1171 struct ib_uverbs_poll_cq cmd;
1172 struct ib_uverbs_poll_cq_resp resp;
1173 u8 __user *header_ptr;
1174 u8 __user *data_ptr;
1175 struct ib_cq *cq;
1176 struct ib_wc wc;
1177 int ret;
1178
1179 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1180 if (ret)
1181 return ret;
1182
1183 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1184 if (!cq)
1185 return -EINVAL;
1186
1187
1188 header_ptr = attrs->ucore.outbuf;
1189 data_ptr = header_ptr + sizeof resp;
1190
1191 memset(&resp, 0, sizeof resp);
1192 while (resp.count < cmd.ne) {
1193 ret = ib_poll_cq(cq, 1, &wc);
1194 if (ret < 0)
1195 goto out_put;
1196 if (!ret)
1197 break;
1198
1199 ret = copy_wc_to_user(cq->device, data_ptr, &wc);
1200 if (ret)
1201 goto out_put;
1202
1203 data_ptr += sizeof(struct ib_uverbs_wc);
1204 ++resp.count;
1205 }
1206
1207 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1208 ret = -EFAULT;
1209 goto out_put;
1210 }
1211 ret = 0;
1212
1213 if (uverbs_attr_is_valid(attrs, UVERBS_ATTR_CORE_OUT))
1214 ret = uverbs_output_written(attrs, UVERBS_ATTR_CORE_OUT);
1215
1216 out_put:
1217 uobj_put_obj_read(cq);
1218 return ret;
1219 }
1220
1221 static int ib_uverbs_req_notify_cq(struct uverbs_attr_bundle *attrs)
1222 {
1223 struct ib_uverbs_req_notify_cq cmd;
1224 struct ib_cq *cq;
1225 int ret;
1226
1227 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1228 if (ret)
1229 return ret;
1230
1231 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1232 if (!cq)
1233 return -EINVAL;
1234
1235 ib_req_notify_cq(cq, cmd.solicited_only ?
1236 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1237
1238 uobj_put_obj_read(cq);
1239
1240 return 0;
1241 }
1242
1243 static int ib_uverbs_destroy_cq(struct uverbs_attr_bundle *attrs)
1244 {
1245 struct ib_uverbs_destroy_cq cmd;
1246 struct ib_uverbs_destroy_cq_resp resp;
1247 struct ib_uobject *uobj;
1248 struct ib_ucq_object *obj;
1249 int ret;
1250
1251 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1252 if (ret)
1253 return ret;
1254
1255 uobj = uobj_get_destroy(UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
1256 if (IS_ERR(uobj))
1257 return PTR_ERR(uobj);
1258
1259 obj = container_of(uobj, struct ib_ucq_object, uobject);
1260 memset(&resp, 0, sizeof(resp));
1261 resp.comp_events_reported = obj->comp_events_reported;
1262 resp.async_events_reported = obj->async_events_reported;
1263
1264 uobj_put_destroy(uobj);
1265
1266 return uverbs_response(attrs, &resp, sizeof(resp));
1267 }
1268
1269 static int create_qp(struct uverbs_attr_bundle *attrs,
1270 struct ib_uverbs_ex_create_qp *cmd)
1271 {
1272 struct ib_uqp_object *obj;
1273 struct ib_device *device;
1274 struct ib_pd *pd = NULL;
1275 struct ib_xrcd *xrcd = NULL;
1276 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT);
1277 struct ib_cq *scq = NULL, *rcq = NULL;
1278 struct ib_srq *srq = NULL;
1279 struct ib_qp *qp;
1280 struct ib_qp_init_attr attr = {};
1281 struct ib_uverbs_ex_create_qp_resp resp;
1282 int ret;
1283 struct ib_rwq_ind_table *ind_tbl = NULL;
1284 bool has_sq = true;
1285 struct ib_device *ib_dev;
1286
1287 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
1288 return -EPERM;
1289
1290 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1291 &ib_dev);
1292 if (IS_ERR(obj))
1293 return PTR_ERR(obj);
1294 obj->uxrcd = NULL;
1295 obj->uevent.uobject.user_handle = cmd->user_handle;
1296 mutex_init(&obj->mcast_lock);
1297
1298 if (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE) {
1299 ind_tbl = uobj_get_obj_read(rwq_ind_table,
1300 UVERBS_OBJECT_RWQ_IND_TBL,
1301 cmd->rwq_ind_tbl_handle, attrs);
1302 if (!ind_tbl) {
1303 ret = -EINVAL;
1304 goto err_put;
1305 }
1306
1307 attr.rwq_ind_tbl = ind_tbl;
1308 }
1309
1310 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1311 ret = -EINVAL;
1312 goto err_put;
1313 }
1314
1315 if (ind_tbl && !cmd->max_send_wr)
1316 has_sq = false;
1317
1318 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1319 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle,
1320 attrs);
1321
1322 if (IS_ERR(xrcd_uobj)) {
1323 ret = -EINVAL;
1324 goto err_put;
1325 }
1326
1327 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1328 if (!xrcd) {
1329 ret = -EINVAL;
1330 goto err_put;
1331 }
1332 device = xrcd->device;
1333 } else {
1334 if (cmd->qp_type == IB_QPT_XRC_INI) {
1335 cmd->max_recv_wr = 0;
1336 cmd->max_recv_sge = 0;
1337 } else {
1338 if (cmd->is_srq) {
1339 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ,
1340 cmd->srq_handle, attrs);
1341 if (!srq || srq->srq_type == IB_SRQT_XRC) {
1342 ret = -EINVAL;
1343 goto err_put;
1344 }
1345 }
1346
1347 if (!ind_tbl) {
1348 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1349 rcq = uobj_get_obj_read(
1350 cq, UVERBS_OBJECT_CQ,
1351 cmd->recv_cq_handle, attrs);
1352 if (!rcq) {
1353 ret = -EINVAL;
1354 goto err_put;
1355 }
1356 }
1357 }
1358 }
1359
1360 if (has_sq)
1361 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
1362 cmd->send_cq_handle, attrs);
1363 if (!ind_tbl)
1364 rcq = rcq ?: scq;
1365 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle,
1366 attrs);
1367 if (!pd || (!scq && has_sq)) {
1368 ret = -EINVAL;
1369 goto err_put;
1370 }
1371
1372 device = pd->device;
1373 }
1374
1375 attr.event_handler = ib_uverbs_qp_event_handler;
1376 attr.qp_context = attrs->ufile;
1377 attr.send_cq = scq;
1378 attr.recv_cq = rcq;
1379 attr.srq = srq;
1380 attr.xrcd = xrcd;
1381 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1382 IB_SIGNAL_REQ_WR;
1383 attr.qp_type = cmd->qp_type;
1384 attr.create_flags = 0;
1385
1386 attr.cap.max_send_wr = cmd->max_send_wr;
1387 attr.cap.max_recv_wr = cmd->max_recv_wr;
1388 attr.cap.max_send_sge = cmd->max_send_sge;
1389 attr.cap.max_recv_sge = cmd->max_recv_sge;
1390 attr.cap.max_inline_data = cmd->max_inline_data;
1391
1392 obj->uevent.events_reported = 0;
1393 INIT_LIST_HEAD(&obj->uevent.event_list);
1394 INIT_LIST_HEAD(&obj->mcast_list);
1395
1396 attr.create_flags = cmd->create_flags;
1397 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1398 IB_QP_CREATE_CROSS_CHANNEL |
1399 IB_QP_CREATE_MANAGED_SEND |
1400 IB_QP_CREATE_MANAGED_RECV |
1401 IB_QP_CREATE_SCATTER_FCS |
1402 IB_QP_CREATE_CVLAN_STRIPPING |
1403 IB_QP_CREATE_SOURCE_QPN |
1404 IB_QP_CREATE_PCI_WRITE_END_PADDING)) {
1405 ret = -EINVAL;
1406 goto err_put;
1407 }
1408
1409 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) {
1410 if (!capable(CAP_NET_RAW)) {
1411 ret = -EPERM;
1412 goto err_put;
1413 }
1414
1415 attr.source_qpn = cmd->source_qpn;
1416 }
1417
1418 if (cmd->qp_type == IB_QPT_XRC_TGT)
1419 qp = ib_create_qp(pd, &attr);
1420 else
1421 qp = _ib_create_qp(device, pd, &attr, &attrs->driver_udata,
1422 &obj->uevent.uobject);
1423
1424 if (IS_ERR(qp)) {
1425 ret = PTR_ERR(qp);
1426 goto err_put;
1427 }
1428
1429 if (cmd->qp_type != IB_QPT_XRC_TGT) {
1430 ret = ib_create_qp_security(qp, device);
1431 if (ret)
1432 goto err_cb;
1433
1434 atomic_inc(&pd->usecnt);
1435 if (attr.send_cq)
1436 atomic_inc(&attr.send_cq->usecnt);
1437 if (attr.recv_cq)
1438 atomic_inc(&attr.recv_cq->usecnt);
1439 if (attr.srq)
1440 atomic_inc(&attr.srq->usecnt);
1441 if (ind_tbl)
1442 atomic_inc(&ind_tbl->usecnt);
1443 } else {
1444
1445 qp->uobject = &obj->uevent.uobject;
1446 }
1447
1448 obj->uevent.uobject.object = qp;
1449
1450 memset(&resp, 0, sizeof resp);
1451 resp.base.qpn = qp->qp_num;
1452 resp.base.qp_handle = obj->uevent.uobject.id;
1453 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1454 resp.base.max_send_sge = attr.cap.max_send_sge;
1455 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1456 resp.base.max_send_wr = attr.cap.max_send_wr;
1457 resp.base.max_inline_data = attr.cap.max_inline_data;
1458 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
1459
1460 ret = uverbs_response(attrs, &resp, sizeof(resp));
1461 if (ret)
1462 goto err_cb;
1463
1464 if (xrcd) {
1465 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1466 uobject);
1467 atomic_inc(&obj->uxrcd->refcnt);
1468 uobj_put_read(xrcd_uobj);
1469 }
1470
1471 if (pd)
1472 uobj_put_obj_read(pd);
1473 if (scq)
1474 uobj_put_obj_read(scq);
1475 if (rcq && rcq != scq)
1476 uobj_put_obj_read(rcq);
1477 if (srq)
1478 uobj_put_obj_read(srq);
1479 if (ind_tbl)
1480 uobj_put_obj_read(ind_tbl);
1481
1482 return uobj_alloc_commit(&obj->uevent.uobject, attrs);
1483 err_cb:
1484 ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs));
1485
1486 err_put:
1487 if (!IS_ERR(xrcd_uobj))
1488 uobj_put_read(xrcd_uobj);
1489 if (pd)
1490 uobj_put_obj_read(pd);
1491 if (scq)
1492 uobj_put_obj_read(scq);
1493 if (rcq && rcq != scq)
1494 uobj_put_obj_read(rcq);
1495 if (srq)
1496 uobj_put_obj_read(srq);
1497 if (ind_tbl)
1498 uobj_put_obj_read(ind_tbl);
1499
1500 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1501 return ret;
1502 }
1503
1504 static int ib_uverbs_create_qp(struct uverbs_attr_bundle *attrs)
1505 {
1506 struct ib_uverbs_create_qp cmd;
1507 struct ib_uverbs_ex_create_qp cmd_ex;
1508 int ret;
1509
1510 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1511 if (ret)
1512 return ret;
1513
1514 memset(&cmd_ex, 0, sizeof(cmd_ex));
1515 cmd_ex.user_handle = cmd.user_handle;
1516 cmd_ex.pd_handle = cmd.pd_handle;
1517 cmd_ex.send_cq_handle = cmd.send_cq_handle;
1518 cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1519 cmd_ex.srq_handle = cmd.srq_handle;
1520 cmd_ex.max_send_wr = cmd.max_send_wr;
1521 cmd_ex.max_recv_wr = cmd.max_recv_wr;
1522 cmd_ex.max_send_sge = cmd.max_send_sge;
1523 cmd_ex.max_recv_sge = cmd.max_recv_sge;
1524 cmd_ex.max_inline_data = cmd.max_inline_data;
1525 cmd_ex.sq_sig_all = cmd.sq_sig_all;
1526 cmd_ex.qp_type = cmd.qp_type;
1527 cmd_ex.is_srq = cmd.is_srq;
1528
1529 return create_qp(attrs, &cmd_ex);
1530 }
1531
1532 static int ib_uverbs_ex_create_qp(struct uverbs_attr_bundle *attrs)
1533 {
1534 struct ib_uverbs_ex_create_qp cmd;
1535 int ret;
1536
1537 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1538 if (ret)
1539 return ret;
1540
1541 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1542 return -EINVAL;
1543
1544 if (cmd.reserved)
1545 return -EINVAL;
1546
1547 return create_qp(attrs, &cmd);
1548 }
1549
1550 static int ib_uverbs_open_qp(struct uverbs_attr_bundle *attrs)
1551 {
1552 struct ib_uverbs_open_qp cmd;
1553 struct ib_uverbs_create_qp_resp resp;
1554 struct ib_uqp_object *obj;
1555 struct ib_xrcd *xrcd;
1556 struct ib_uobject *uninitialized_var(xrcd_uobj);
1557 struct ib_qp *qp;
1558 struct ib_qp_open_attr attr;
1559 int ret;
1560 struct ib_device *ib_dev;
1561
1562 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1563 if (ret)
1564 return ret;
1565
1566 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP, attrs,
1567 &ib_dev);
1568 if (IS_ERR(obj))
1569 return PTR_ERR(obj);
1570
1571 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle, attrs);
1572 if (IS_ERR(xrcd_uobj)) {
1573 ret = -EINVAL;
1574 goto err_put;
1575 }
1576
1577 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1578 if (!xrcd) {
1579 ret = -EINVAL;
1580 goto err_xrcd;
1581 }
1582
1583 attr.event_handler = ib_uverbs_qp_event_handler;
1584 attr.qp_context = attrs->ufile;
1585 attr.qp_num = cmd.qpn;
1586 attr.qp_type = cmd.qp_type;
1587
1588 obj->uevent.events_reported = 0;
1589 INIT_LIST_HEAD(&obj->uevent.event_list);
1590 INIT_LIST_HEAD(&obj->mcast_list);
1591
1592 qp = ib_open_qp(xrcd, &attr);
1593 if (IS_ERR(qp)) {
1594 ret = PTR_ERR(qp);
1595 goto err_xrcd;
1596 }
1597
1598 obj->uevent.uobject.object = qp;
1599 obj->uevent.uobject.user_handle = cmd.user_handle;
1600
1601 memset(&resp, 0, sizeof resp);
1602 resp.qpn = qp->qp_num;
1603 resp.qp_handle = obj->uevent.uobject.id;
1604
1605 ret = uverbs_response(attrs, &resp, sizeof(resp));
1606 if (ret)
1607 goto err_destroy;
1608
1609 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1610 atomic_inc(&obj->uxrcd->refcnt);
1611 qp->uobject = &obj->uevent.uobject;
1612 uobj_put_read(xrcd_uobj);
1613
1614 return uobj_alloc_commit(&obj->uevent.uobject, attrs);
1615
1616 err_destroy:
1617 ib_destroy_qp_user(qp, uverbs_get_cleared_udata(attrs));
1618 err_xrcd:
1619 uobj_put_read(xrcd_uobj);
1620 err_put:
1621 uobj_alloc_abort(&obj->uevent.uobject, attrs);
1622 return ret;
1623 }
1624
1625 static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr,
1626 struct rdma_ah_attr *rdma_attr)
1627 {
1628 const struct ib_global_route *grh;
1629
1630 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr);
1631 uverb_attr->sl = rdma_ah_get_sl(rdma_attr);
1632 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr);
1633 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr);
1634 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) &
1635 IB_AH_GRH);
1636 if (uverb_attr->is_global) {
1637 grh = rdma_ah_read_grh(rdma_attr);
1638 memcpy(uverb_attr->dgid, grh->dgid.raw, 16);
1639 uverb_attr->flow_label = grh->flow_label;
1640 uverb_attr->sgid_index = grh->sgid_index;
1641 uverb_attr->hop_limit = grh->hop_limit;
1642 uverb_attr->traffic_class = grh->traffic_class;
1643 }
1644 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr);
1645 }
1646
1647 static int ib_uverbs_query_qp(struct uverbs_attr_bundle *attrs)
1648 {
1649 struct ib_uverbs_query_qp cmd;
1650 struct ib_uverbs_query_qp_resp resp;
1651 struct ib_qp *qp;
1652 struct ib_qp_attr *attr;
1653 struct ib_qp_init_attr *init_attr;
1654 int ret;
1655
1656 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1657 if (ret)
1658 return ret;
1659
1660 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1661 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1662 if (!attr || !init_attr) {
1663 ret = -ENOMEM;
1664 goto out;
1665 }
1666
1667 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1668 if (!qp) {
1669 ret = -EINVAL;
1670 goto out;
1671 }
1672
1673 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1674
1675 uobj_put_obj_read(qp);
1676
1677 if (ret)
1678 goto out;
1679
1680 memset(&resp, 0, sizeof resp);
1681
1682 resp.qp_state = attr->qp_state;
1683 resp.cur_qp_state = attr->cur_qp_state;
1684 resp.path_mtu = attr->path_mtu;
1685 resp.path_mig_state = attr->path_mig_state;
1686 resp.qkey = attr->qkey;
1687 resp.rq_psn = attr->rq_psn;
1688 resp.sq_psn = attr->sq_psn;
1689 resp.dest_qp_num = attr->dest_qp_num;
1690 resp.qp_access_flags = attr->qp_access_flags;
1691 resp.pkey_index = attr->pkey_index;
1692 resp.alt_pkey_index = attr->alt_pkey_index;
1693 resp.sq_draining = attr->sq_draining;
1694 resp.max_rd_atomic = attr->max_rd_atomic;
1695 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1696 resp.min_rnr_timer = attr->min_rnr_timer;
1697 resp.port_num = attr->port_num;
1698 resp.timeout = attr->timeout;
1699 resp.retry_cnt = attr->retry_cnt;
1700 resp.rnr_retry = attr->rnr_retry;
1701 resp.alt_port_num = attr->alt_port_num;
1702 resp.alt_timeout = attr->alt_timeout;
1703
1704 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr);
1705 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr);
1706
1707 resp.max_send_wr = init_attr->cap.max_send_wr;
1708 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1709 resp.max_send_sge = init_attr->cap.max_send_sge;
1710 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1711 resp.max_inline_data = init_attr->cap.max_inline_data;
1712 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1713
1714 ret = uverbs_response(attrs, &resp, sizeof(resp));
1715
1716 out:
1717 kfree(attr);
1718 kfree(init_attr);
1719
1720 return ret;
1721 }
1722
1723
1724 static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1725 {
1726 switch (qp_type) {
1727 case IB_QPT_XRC_INI:
1728 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1729 case IB_QPT_XRC_TGT:
1730 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1731 IB_QP_RNR_RETRY);
1732 default:
1733 return mask;
1734 }
1735 }
1736
1737 static void copy_ah_attr_from_uverbs(struct ib_device *dev,
1738 struct rdma_ah_attr *rdma_attr,
1739 struct ib_uverbs_qp_dest *uverb_attr)
1740 {
1741 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num);
1742 if (uverb_attr->is_global) {
1743 rdma_ah_set_grh(rdma_attr, NULL,
1744 uverb_attr->flow_label,
1745 uverb_attr->sgid_index,
1746 uverb_attr->hop_limit,
1747 uverb_attr->traffic_class);
1748 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid);
1749 } else {
1750 rdma_ah_set_ah_flags(rdma_attr, 0);
1751 }
1752 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid);
1753 rdma_ah_set_sl(rdma_attr, uverb_attr->sl);
1754 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits);
1755 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate);
1756 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num);
1757 rdma_ah_set_make_grd(rdma_attr, false);
1758 }
1759
1760 static int modify_qp(struct uverbs_attr_bundle *attrs,
1761 struct ib_uverbs_ex_modify_qp *cmd)
1762 {
1763 struct ib_qp_attr *attr;
1764 struct ib_qp *qp;
1765 int ret;
1766
1767 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1768 if (!attr)
1769 return -ENOMEM;
1770
1771 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle,
1772 attrs);
1773 if (!qp) {
1774 ret = -EINVAL;
1775 goto out;
1776 }
1777
1778 if ((cmd->base.attr_mask & IB_QP_PORT) &&
1779 !rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1780 ret = -EINVAL;
1781 goto release_qp;
1782 }
1783
1784 if ((cmd->base.attr_mask & IB_QP_AV)) {
1785 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) {
1786 ret = -EINVAL;
1787 goto release_qp;
1788 }
1789
1790 if (cmd->base.attr_mask & IB_QP_STATE &&
1791 cmd->base.qp_state == IB_QPS_RTR) {
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806 if (cmd->base.dest.port_num != qp->real_qp->port) {
1807 ret = -EINVAL;
1808 goto release_qp;
1809 }
1810 } else {
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1825 == (IB_QP_AV | IB_QP_PORT)) &&
1826 cmd->base.port_num != cmd->base.dest.port_num) {
1827 ret = -EINVAL;
1828 goto release_qp;
1829 }
1830 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
1831 == IB_QP_AV) {
1832 cmd->base.attr_mask |= IB_QP_PORT;
1833 cmd->base.port_num = cmd->base.dest.port_num;
1834 }
1835 }
1836 }
1837
1838 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) &&
1839 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) ||
1840 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) ||
1841 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) {
1842 ret = -EINVAL;
1843 goto release_qp;
1844 }
1845
1846 if ((cmd->base.attr_mask & IB_QP_CUR_STATE &&
1847 cmd->base.cur_qp_state > IB_QPS_ERR) ||
1848 (cmd->base.attr_mask & IB_QP_STATE &&
1849 cmd->base.qp_state > IB_QPS_ERR)) {
1850 ret = -EINVAL;
1851 goto release_qp;
1852 }
1853
1854 if (cmd->base.attr_mask & IB_QP_STATE)
1855 attr->qp_state = cmd->base.qp_state;
1856 if (cmd->base.attr_mask & IB_QP_CUR_STATE)
1857 attr->cur_qp_state = cmd->base.cur_qp_state;
1858 if (cmd->base.attr_mask & IB_QP_PATH_MTU)
1859 attr->path_mtu = cmd->base.path_mtu;
1860 if (cmd->base.attr_mask & IB_QP_PATH_MIG_STATE)
1861 attr->path_mig_state = cmd->base.path_mig_state;
1862 if (cmd->base.attr_mask & IB_QP_QKEY)
1863 attr->qkey = cmd->base.qkey;
1864 if (cmd->base.attr_mask & IB_QP_RQ_PSN)
1865 attr->rq_psn = cmd->base.rq_psn;
1866 if (cmd->base.attr_mask & IB_QP_SQ_PSN)
1867 attr->sq_psn = cmd->base.sq_psn;
1868 if (cmd->base.attr_mask & IB_QP_DEST_QPN)
1869 attr->dest_qp_num = cmd->base.dest_qp_num;
1870 if (cmd->base.attr_mask & IB_QP_ACCESS_FLAGS)
1871 attr->qp_access_flags = cmd->base.qp_access_flags;
1872 if (cmd->base.attr_mask & IB_QP_PKEY_INDEX)
1873 attr->pkey_index = cmd->base.pkey_index;
1874 if (cmd->base.attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
1875 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
1876 if (cmd->base.attr_mask & IB_QP_MAX_QP_RD_ATOMIC)
1877 attr->max_rd_atomic = cmd->base.max_rd_atomic;
1878 if (cmd->base.attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
1879 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
1880 if (cmd->base.attr_mask & IB_QP_MIN_RNR_TIMER)
1881 attr->min_rnr_timer = cmd->base.min_rnr_timer;
1882 if (cmd->base.attr_mask & IB_QP_PORT)
1883 attr->port_num = cmd->base.port_num;
1884 if (cmd->base.attr_mask & IB_QP_TIMEOUT)
1885 attr->timeout = cmd->base.timeout;
1886 if (cmd->base.attr_mask & IB_QP_RETRY_CNT)
1887 attr->retry_cnt = cmd->base.retry_cnt;
1888 if (cmd->base.attr_mask & IB_QP_RNR_RETRY)
1889 attr->rnr_retry = cmd->base.rnr_retry;
1890 if (cmd->base.attr_mask & IB_QP_ALT_PATH) {
1891 attr->alt_port_num = cmd->base.alt_port_num;
1892 attr->alt_timeout = cmd->base.alt_timeout;
1893 attr->alt_pkey_index = cmd->base.alt_pkey_index;
1894 }
1895 if (cmd->base.attr_mask & IB_QP_RATE_LIMIT)
1896 attr->rate_limit = cmd->rate_limit;
1897
1898 if (cmd->base.attr_mask & IB_QP_AV)
1899 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,
1900 &cmd->base.dest);
1901
1902 if (cmd->base.attr_mask & IB_QP_ALT_PATH)
1903 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr,
1904 &cmd->base.alt_dest);
1905
1906 ret = ib_modify_qp_with_udata(qp, attr,
1907 modify_qp_mask(qp->qp_type,
1908 cmd->base.attr_mask),
1909 &attrs->driver_udata);
1910
1911 release_qp:
1912 uobj_put_obj_read(qp);
1913 out:
1914 kfree(attr);
1915
1916 return ret;
1917 }
1918
1919 static int ib_uverbs_modify_qp(struct uverbs_attr_bundle *attrs)
1920 {
1921 struct ib_uverbs_ex_modify_qp cmd;
1922 int ret;
1923
1924 ret = uverbs_request(attrs, &cmd.base, sizeof(cmd.base));
1925 if (ret)
1926 return ret;
1927
1928 if (cmd.base.attr_mask &
1929 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1))
1930 return -EOPNOTSUPP;
1931
1932 return modify_qp(attrs, &cmd);
1933 }
1934
1935 static int ib_uverbs_ex_modify_qp(struct uverbs_attr_bundle *attrs)
1936 {
1937 struct ib_uverbs_ex_modify_qp cmd;
1938 struct ib_uverbs_ex_modify_qp_resp resp = {
1939 .response_length = uverbs_response_length(attrs, sizeof(resp))
1940 };
1941 int ret;
1942
1943 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1944 if (ret)
1945 return ret;
1946
1947
1948
1949
1950
1951 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
1952
1953 if (cmd.base.attr_mask &
1954 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1))
1955 return -EOPNOTSUPP;
1956
1957 ret = modify_qp(attrs, &cmd);
1958 if (ret)
1959 return ret;
1960
1961 return uverbs_response(attrs, &resp, sizeof(resp));
1962 }
1963
1964 static int ib_uverbs_destroy_qp(struct uverbs_attr_bundle *attrs)
1965 {
1966 struct ib_uverbs_destroy_qp cmd;
1967 struct ib_uverbs_destroy_qp_resp resp;
1968 struct ib_uobject *uobj;
1969 struct ib_uqp_object *obj;
1970 int ret;
1971
1972 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
1973 if (ret)
1974 return ret;
1975
1976 uobj = uobj_get_destroy(UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
1977 if (IS_ERR(uobj))
1978 return PTR_ERR(uobj);
1979
1980 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
1981 memset(&resp, 0, sizeof(resp));
1982 resp.events_reported = obj->uevent.events_reported;
1983
1984 uobj_put_destroy(uobj);
1985
1986 return uverbs_response(attrs, &resp, sizeof(resp));
1987 }
1988
1989 static void *alloc_wr(size_t wr_size, __u32 num_sge)
1990 {
1991 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) /
1992 sizeof (struct ib_sge))
1993 return NULL;
1994
1995 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) +
1996 num_sge * sizeof (struct ib_sge), GFP_KERNEL);
1997 }
1998
1999 static int ib_uverbs_post_send(struct uverbs_attr_bundle *attrs)
2000 {
2001 struct ib_uverbs_post_send cmd;
2002 struct ib_uverbs_post_send_resp resp;
2003 struct ib_uverbs_send_wr *user_wr;
2004 struct ib_send_wr *wr = NULL, *last, *next;
2005 const struct ib_send_wr *bad_wr;
2006 struct ib_qp *qp;
2007 int i, sg_ind;
2008 int is_ud;
2009 int ret, ret2;
2010 size_t next_size;
2011 const struct ib_sge __user *sgls;
2012 const void __user *wqes;
2013 struct uverbs_req_iter iter;
2014
2015 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2016 if (ret)
2017 return ret;
2018 wqes = uverbs_request_next_ptr(&iter, cmd.wqe_size * cmd.wr_count);
2019 if (IS_ERR(wqes))
2020 return PTR_ERR(wqes);
2021 sgls = uverbs_request_next_ptr(
2022 &iter, cmd.sge_count * sizeof(struct ib_uverbs_sge));
2023 if (IS_ERR(sgls))
2024 return PTR_ERR(sgls);
2025 ret = uverbs_request_finish(&iter);
2026 if (ret)
2027 return ret;
2028
2029 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2030 if (!user_wr)
2031 return -ENOMEM;
2032
2033 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2034 if (!qp) {
2035 ret = -EINVAL;
2036 goto out;
2037 }
2038
2039 is_ud = qp->qp_type == IB_QPT_UD;
2040 sg_ind = 0;
2041 last = NULL;
2042 for (i = 0; i < cmd.wr_count; ++i) {
2043 if (copy_from_user(user_wr, wqes + i * cmd.wqe_size,
2044 cmd.wqe_size)) {
2045 ret = -EFAULT;
2046 goto out_put;
2047 }
2048
2049 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2050 ret = -EINVAL;
2051 goto out_put;
2052 }
2053
2054 if (is_ud) {
2055 struct ib_ud_wr *ud;
2056
2057 if (user_wr->opcode != IB_WR_SEND &&
2058 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2059 ret = -EINVAL;
2060 goto out_put;
2061 }
2062
2063 next_size = sizeof(*ud);
2064 ud = alloc_wr(next_size, user_wr->num_sge);
2065 if (!ud) {
2066 ret = -ENOMEM;
2067 goto out_put;
2068 }
2069
2070 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH,
2071 user_wr->wr.ud.ah, attrs);
2072 if (!ud->ah) {
2073 kfree(ud);
2074 ret = -EINVAL;
2075 goto out_put;
2076 }
2077 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2078 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2079
2080 next = &ud->wr;
2081 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2082 user_wr->opcode == IB_WR_RDMA_WRITE ||
2083 user_wr->opcode == IB_WR_RDMA_READ) {
2084 struct ib_rdma_wr *rdma;
2085
2086 next_size = sizeof(*rdma);
2087 rdma = alloc_wr(next_size, user_wr->num_sge);
2088 if (!rdma) {
2089 ret = -ENOMEM;
2090 goto out_put;
2091 }
2092
2093 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2094 rdma->rkey = user_wr->wr.rdma.rkey;
2095
2096 next = &rdma->wr;
2097 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2098 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2099 struct ib_atomic_wr *atomic;
2100
2101 next_size = sizeof(*atomic);
2102 atomic = alloc_wr(next_size, user_wr->num_sge);
2103 if (!atomic) {
2104 ret = -ENOMEM;
2105 goto out_put;
2106 }
2107
2108 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2109 atomic->compare_add = user_wr->wr.atomic.compare_add;
2110 atomic->swap = user_wr->wr.atomic.swap;
2111 atomic->rkey = user_wr->wr.atomic.rkey;
2112
2113 next = &atomic->wr;
2114 } else if (user_wr->opcode == IB_WR_SEND ||
2115 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2116 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2117 next_size = sizeof(*next);
2118 next = alloc_wr(next_size, user_wr->num_sge);
2119 if (!next) {
2120 ret = -ENOMEM;
2121 goto out_put;
2122 }
2123 } else {
2124 ret = -EINVAL;
2125 goto out_put;
2126 }
2127
2128 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2129 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2130 next->ex.imm_data =
2131 (__be32 __force) user_wr->ex.imm_data;
2132 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2133 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2134 }
2135
2136 if (!last)
2137 wr = next;
2138 else
2139 last->next = next;
2140 last = next;
2141
2142 next->next = NULL;
2143 next->wr_id = user_wr->wr_id;
2144 next->num_sge = user_wr->num_sge;
2145 next->opcode = user_wr->opcode;
2146 next->send_flags = user_wr->send_flags;
2147
2148 if (next->num_sge) {
2149 next->sg_list = (void *) next +
2150 ALIGN(next_size, sizeof(struct ib_sge));
2151 if (copy_from_user(next->sg_list, sgls + sg_ind,
2152 next->num_sge *
2153 sizeof(struct ib_sge))) {
2154 ret = -EFAULT;
2155 goto out_put;
2156 }
2157 sg_ind += next->num_sge;
2158 } else
2159 next->sg_list = NULL;
2160 }
2161
2162 resp.bad_wr = 0;
2163 ret = qp->device->ops.post_send(qp->real_qp, wr, &bad_wr);
2164 if (ret)
2165 for (next = wr; next; next = next->next) {
2166 ++resp.bad_wr;
2167 if (next == bad_wr)
2168 break;
2169 }
2170
2171 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2172 if (ret2)
2173 ret = ret2;
2174
2175 out_put:
2176 uobj_put_obj_read(qp);
2177
2178 while (wr) {
2179 if (is_ud && ud_wr(wr)->ah)
2180 uobj_put_obj_read(ud_wr(wr)->ah);
2181 next = wr->next;
2182 kfree(wr);
2183 wr = next;
2184 }
2185
2186 out:
2187 kfree(user_wr);
2188
2189 return ret;
2190 }
2191
2192 static struct ib_recv_wr *
2193 ib_uverbs_unmarshall_recv(struct uverbs_req_iter *iter, u32 wr_count,
2194 u32 wqe_size, u32 sge_count)
2195 {
2196 struct ib_uverbs_recv_wr *user_wr;
2197 struct ib_recv_wr *wr = NULL, *last, *next;
2198 int sg_ind;
2199 int i;
2200 int ret;
2201 const struct ib_sge __user *sgls;
2202 const void __user *wqes;
2203
2204 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
2205 return ERR_PTR(-EINVAL);
2206
2207 wqes = uverbs_request_next_ptr(iter, wqe_size * wr_count);
2208 if (IS_ERR(wqes))
2209 return ERR_CAST(wqes);
2210 sgls = uverbs_request_next_ptr(
2211 iter, sge_count * sizeof(struct ib_uverbs_sge));
2212 if (IS_ERR(sgls))
2213 return ERR_CAST(sgls);
2214 ret = uverbs_request_finish(iter);
2215 if (ret)
2216 return ERR_PTR(ret);
2217
2218 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2219 if (!user_wr)
2220 return ERR_PTR(-ENOMEM);
2221
2222 sg_ind = 0;
2223 last = NULL;
2224 for (i = 0; i < wr_count; ++i) {
2225 if (copy_from_user(user_wr, wqes + i * wqe_size,
2226 wqe_size)) {
2227 ret = -EFAULT;
2228 goto err;
2229 }
2230
2231 if (user_wr->num_sge + sg_ind > sge_count) {
2232 ret = -EINVAL;
2233 goto err;
2234 }
2235
2236 if (user_wr->num_sge >=
2237 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) /
2238 sizeof (struct ib_sge)) {
2239 ret = -EINVAL;
2240 goto err;
2241 }
2242
2243 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2244 user_wr->num_sge * sizeof (struct ib_sge),
2245 GFP_KERNEL);
2246 if (!next) {
2247 ret = -ENOMEM;
2248 goto err;
2249 }
2250
2251 if (!last)
2252 wr = next;
2253 else
2254 last->next = next;
2255 last = next;
2256
2257 next->next = NULL;
2258 next->wr_id = user_wr->wr_id;
2259 next->num_sge = user_wr->num_sge;
2260
2261 if (next->num_sge) {
2262 next->sg_list = (void *) next +
2263 ALIGN(sizeof *next, sizeof (struct ib_sge));
2264 if (copy_from_user(next->sg_list, sgls + sg_ind,
2265 next->num_sge *
2266 sizeof(struct ib_sge))) {
2267 ret = -EFAULT;
2268 goto err;
2269 }
2270 sg_ind += next->num_sge;
2271 } else
2272 next->sg_list = NULL;
2273 }
2274
2275 kfree(user_wr);
2276 return wr;
2277
2278 err:
2279 kfree(user_wr);
2280
2281 while (wr) {
2282 next = wr->next;
2283 kfree(wr);
2284 wr = next;
2285 }
2286
2287 return ERR_PTR(ret);
2288 }
2289
2290 static int ib_uverbs_post_recv(struct uverbs_attr_bundle *attrs)
2291 {
2292 struct ib_uverbs_post_recv cmd;
2293 struct ib_uverbs_post_recv_resp resp;
2294 struct ib_recv_wr *wr, *next;
2295 const struct ib_recv_wr *bad_wr;
2296 struct ib_qp *qp;
2297 int ret, ret2;
2298 struct uverbs_req_iter iter;
2299
2300 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2301 if (ret)
2302 return ret;
2303
2304 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2305 cmd.sge_count);
2306 if (IS_ERR(wr))
2307 return PTR_ERR(wr);
2308
2309 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2310 if (!qp) {
2311 ret = -EINVAL;
2312 goto out;
2313 }
2314
2315 resp.bad_wr = 0;
2316 ret = qp->device->ops.post_recv(qp->real_qp, wr, &bad_wr);
2317
2318 uobj_put_obj_read(qp);
2319 if (ret) {
2320 for (next = wr; next; next = next->next) {
2321 ++resp.bad_wr;
2322 if (next == bad_wr)
2323 break;
2324 }
2325 }
2326
2327 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2328 if (ret2)
2329 ret = ret2;
2330 out:
2331 while (wr) {
2332 next = wr->next;
2333 kfree(wr);
2334 wr = next;
2335 }
2336
2337 return ret;
2338 }
2339
2340 static int ib_uverbs_post_srq_recv(struct uverbs_attr_bundle *attrs)
2341 {
2342 struct ib_uverbs_post_srq_recv cmd;
2343 struct ib_uverbs_post_srq_recv_resp resp;
2344 struct ib_recv_wr *wr, *next;
2345 const struct ib_recv_wr *bad_wr;
2346 struct ib_srq *srq;
2347 int ret, ret2;
2348 struct uverbs_req_iter iter;
2349
2350 ret = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
2351 if (ret)
2352 return ret;
2353
2354 wr = ib_uverbs_unmarshall_recv(&iter, cmd.wr_count, cmd.wqe_size,
2355 cmd.sge_count);
2356 if (IS_ERR(wr))
2357 return PTR_ERR(wr);
2358
2359 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
2360 if (!srq) {
2361 ret = -EINVAL;
2362 goto out;
2363 }
2364
2365 resp.bad_wr = 0;
2366 ret = srq->device->ops.post_srq_recv(srq, wr, &bad_wr);
2367
2368 uobj_put_obj_read(srq);
2369
2370 if (ret)
2371 for (next = wr; next; next = next->next) {
2372 ++resp.bad_wr;
2373 if (next == bad_wr)
2374 break;
2375 }
2376
2377 ret2 = uverbs_response(attrs, &resp, sizeof(resp));
2378 if (ret2)
2379 ret = ret2;
2380
2381 out:
2382 while (wr) {
2383 next = wr->next;
2384 kfree(wr);
2385 wr = next;
2386 }
2387
2388 return ret;
2389 }
2390
2391 static int ib_uverbs_create_ah(struct uverbs_attr_bundle *attrs)
2392 {
2393 struct ib_uverbs_create_ah cmd;
2394 struct ib_uverbs_create_ah_resp resp;
2395 struct ib_uobject *uobj;
2396 struct ib_pd *pd;
2397 struct ib_ah *ah;
2398 struct rdma_ah_attr attr = {};
2399 int ret;
2400 struct ib_device *ib_dev;
2401
2402 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2403 if (ret)
2404 return ret;
2405
2406 uobj = uobj_alloc(UVERBS_OBJECT_AH, attrs, &ib_dev);
2407 if (IS_ERR(uobj))
2408 return PTR_ERR(uobj);
2409
2410 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num)) {
2411 ret = -EINVAL;
2412 goto err;
2413 }
2414
2415 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2416 if (!pd) {
2417 ret = -EINVAL;
2418 goto err;
2419 }
2420
2421 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2422 rdma_ah_set_make_grd(&attr, false);
2423 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2424 rdma_ah_set_sl(&attr, cmd.attr.sl);
2425 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2426 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2427 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2428
2429 if (cmd.attr.is_global) {
2430 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2431 cmd.attr.grh.sgid_index,
2432 cmd.attr.grh.hop_limit,
2433 cmd.attr.grh.traffic_class);
2434 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2435 } else {
2436 rdma_ah_set_ah_flags(&attr, 0);
2437 }
2438
2439 ah = rdma_create_user_ah(pd, &attr, &attrs->driver_udata);
2440 if (IS_ERR(ah)) {
2441 ret = PTR_ERR(ah);
2442 goto err_put;
2443 }
2444
2445 ah->uobject = uobj;
2446 uobj->user_handle = cmd.user_handle;
2447 uobj->object = ah;
2448
2449 resp.ah_handle = uobj->id;
2450
2451 ret = uverbs_response(attrs, &resp, sizeof(resp));
2452 if (ret)
2453 goto err_copy;
2454
2455 uobj_put_obj_read(pd);
2456 return uobj_alloc_commit(uobj, attrs);
2457
2458 err_copy:
2459 rdma_destroy_ah_user(ah, RDMA_DESTROY_AH_SLEEPABLE,
2460 uverbs_get_cleared_udata(attrs));
2461
2462 err_put:
2463 uobj_put_obj_read(pd);
2464
2465 err:
2466 uobj_alloc_abort(uobj, attrs);
2467 return ret;
2468 }
2469
2470 static int ib_uverbs_destroy_ah(struct uverbs_attr_bundle *attrs)
2471 {
2472 struct ib_uverbs_destroy_ah cmd;
2473 int ret;
2474
2475 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2476 if (ret)
2477 return ret;
2478
2479 return uobj_perform_destroy(UVERBS_OBJECT_AH, cmd.ah_handle, attrs);
2480 }
2481
2482 static int ib_uverbs_attach_mcast(struct uverbs_attr_bundle *attrs)
2483 {
2484 struct ib_uverbs_attach_mcast cmd;
2485 struct ib_qp *qp;
2486 struct ib_uqp_object *obj;
2487 struct ib_uverbs_mcast_entry *mcast;
2488 int ret;
2489
2490 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2491 if (ret)
2492 return ret;
2493
2494 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2495 if (!qp)
2496 return -EINVAL;
2497
2498 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2499
2500 mutex_lock(&obj->mcast_lock);
2501 list_for_each_entry(mcast, &obj->mcast_list, list)
2502 if (cmd.mlid == mcast->lid &&
2503 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2504 ret = 0;
2505 goto out_put;
2506 }
2507
2508 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2509 if (!mcast) {
2510 ret = -ENOMEM;
2511 goto out_put;
2512 }
2513
2514 mcast->lid = cmd.mlid;
2515 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2516
2517 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2518 if (!ret)
2519 list_add_tail(&mcast->list, &obj->mcast_list);
2520 else
2521 kfree(mcast);
2522
2523 out_put:
2524 mutex_unlock(&obj->mcast_lock);
2525 uobj_put_obj_read(qp);
2526
2527 return ret;
2528 }
2529
2530 static int ib_uverbs_detach_mcast(struct uverbs_attr_bundle *attrs)
2531 {
2532 struct ib_uverbs_detach_mcast cmd;
2533 struct ib_uqp_object *obj;
2534 struct ib_qp *qp;
2535 struct ib_uverbs_mcast_entry *mcast;
2536 int ret;
2537 bool found = false;
2538
2539 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2540 if (ret)
2541 return ret;
2542
2543 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
2544 if (!qp)
2545 return -EINVAL;
2546
2547 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2548 mutex_lock(&obj->mcast_lock);
2549
2550 list_for_each_entry(mcast, &obj->mcast_list, list)
2551 if (cmd.mlid == mcast->lid &&
2552 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2553 list_del(&mcast->list);
2554 kfree(mcast);
2555 found = true;
2556 break;
2557 }
2558
2559 if (!found) {
2560 ret = -EINVAL;
2561 goto out_put;
2562 }
2563
2564 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2565
2566 out_put:
2567 mutex_unlock(&obj->mcast_lock);
2568 uobj_put_obj_read(qp);
2569 return ret;
2570 }
2571
2572 struct ib_uflow_resources *flow_resources_alloc(size_t num_specs)
2573 {
2574 struct ib_uflow_resources *resources;
2575
2576 resources = kzalloc(sizeof(*resources), GFP_KERNEL);
2577
2578 if (!resources)
2579 return NULL;
2580
2581 if (!num_specs)
2582 goto out;
2583
2584 resources->counters =
2585 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
2586 resources->collection =
2587 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL);
2588
2589 if (!resources->counters || !resources->collection)
2590 goto err;
2591
2592 out:
2593 resources->max = num_specs;
2594 return resources;
2595
2596 err:
2597 kfree(resources->counters);
2598 kfree(resources);
2599
2600 return NULL;
2601 }
2602 EXPORT_SYMBOL(flow_resources_alloc);
2603
2604 void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
2605 {
2606 unsigned int i;
2607
2608 if (!uflow_res)
2609 return;
2610
2611 for (i = 0; i < uflow_res->collection_num; i++)
2612 atomic_dec(&uflow_res->collection[i]->usecnt);
2613
2614 for (i = 0; i < uflow_res->counters_num; i++)
2615 atomic_dec(&uflow_res->counters[i]->usecnt);
2616
2617 kfree(uflow_res->collection);
2618 kfree(uflow_res->counters);
2619 kfree(uflow_res);
2620 }
2621 EXPORT_SYMBOL(ib_uverbs_flow_resources_free);
2622
2623 void flow_resources_add(struct ib_uflow_resources *uflow_res,
2624 enum ib_flow_spec_type type,
2625 void *ibobj)
2626 {
2627 WARN_ON(uflow_res->num >= uflow_res->max);
2628
2629 switch (type) {
2630 case IB_FLOW_SPEC_ACTION_HANDLE:
2631 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt);
2632 uflow_res->collection[uflow_res->collection_num++] =
2633 (struct ib_flow_action *)ibobj;
2634 break;
2635 case IB_FLOW_SPEC_ACTION_COUNT:
2636 atomic_inc(&((struct ib_counters *)ibobj)->usecnt);
2637 uflow_res->counters[uflow_res->counters_num++] =
2638 (struct ib_counters *)ibobj;
2639 break;
2640 default:
2641 WARN_ON(1);
2642 }
2643
2644 uflow_res->num++;
2645 }
2646 EXPORT_SYMBOL(flow_resources_add);
2647
2648 static int kern_spec_to_ib_spec_action(struct uverbs_attr_bundle *attrs,
2649 struct ib_uverbs_flow_spec *kern_spec,
2650 union ib_flow_spec *ib_spec,
2651 struct ib_uflow_resources *uflow_res)
2652 {
2653 ib_spec->type = kern_spec->type;
2654 switch (ib_spec->type) {
2655 case IB_FLOW_SPEC_ACTION_TAG:
2656 if (kern_spec->flow_tag.size !=
2657 sizeof(struct ib_uverbs_flow_spec_action_tag))
2658 return -EINVAL;
2659
2660 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2661 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2662 break;
2663 case IB_FLOW_SPEC_ACTION_DROP:
2664 if (kern_spec->drop.size !=
2665 sizeof(struct ib_uverbs_flow_spec_action_drop))
2666 return -EINVAL;
2667
2668 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2669 break;
2670 case IB_FLOW_SPEC_ACTION_HANDLE:
2671 if (kern_spec->action.size !=
2672 sizeof(struct ib_uverbs_flow_spec_action_handle))
2673 return -EOPNOTSUPP;
2674 ib_spec->action.act = uobj_get_obj_read(flow_action,
2675 UVERBS_OBJECT_FLOW_ACTION,
2676 kern_spec->action.handle,
2677 attrs);
2678 if (!ib_spec->action.act)
2679 return -EINVAL;
2680 ib_spec->action.size =
2681 sizeof(struct ib_flow_spec_action_handle);
2682 flow_resources_add(uflow_res,
2683 IB_FLOW_SPEC_ACTION_HANDLE,
2684 ib_spec->action.act);
2685 uobj_put_obj_read(ib_spec->action.act);
2686 break;
2687 case IB_FLOW_SPEC_ACTION_COUNT:
2688 if (kern_spec->flow_count.size !=
2689 sizeof(struct ib_uverbs_flow_spec_action_count))
2690 return -EINVAL;
2691 ib_spec->flow_count.counters =
2692 uobj_get_obj_read(counters,
2693 UVERBS_OBJECT_COUNTERS,
2694 kern_spec->flow_count.handle,
2695 attrs);
2696 if (!ib_spec->flow_count.counters)
2697 return -EINVAL;
2698 ib_spec->flow_count.size =
2699 sizeof(struct ib_flow_spec_action_count);
2700 flow_resources_add(uflow_res,
2701 IB_FLOW_SPEC_ACTION_COUNT,
2702 ib_spec->flow_count.counters);
2703 uobj_put_obj_read(ib_spec->flow_count.counters);
2704 break;
2705 default:
2706 return -EINVAL;
2707 }
2708 return 0;
2709 }
2710
2711 static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
2712 u16 ib_real_filter_sz)
2713 {
2714
2715
2716
2717
2718
2719 if (kern_filter_size > ib_real_filter_sz) {
2720 if (memchr_inv(kern_spec_filter +
2721 ib_real_filter_sz, 0,
2722 kern_filter_size - ib_real_filter_sz))
2723 return -EINVAL;
2724 return ib_real_filter_sz;
2725 }
2726 return kern_filter_size;
2727 }
2728
2729 int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
2730 const void *kern_spec_mask,
2731 const void *kern_spec_val,
2732 size_t kern_filter_sz,
2733 union ib_flow_spec *ib_spec)
2734 {
2735 ssize_t actual_filter_sz;
2736 ssize_t ib_filter_sz;
2737
2738
2739 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2740 return -EINVAL;
2741
2742 ib_spec->type = type;
2743
2744 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2745 return -EINVAL;
2746
2747 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2748 case IB_FLOW_SPEC_ETH:
2749 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2750 actual_filter_sz = spec_filter_size(kern_spec_mask,
2751 kern_filter_sz,
2752 ib_filter_sz);
2753 if (actual_filter_sz <= 0)
2754 return -EINVAL;
2755 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2756 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2757 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2758 break;
2759 case IB_FLOW_SPEC_IPV4:
2760 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz);
2761 actual_filter_sz = spec_filter_size(kern_spec_mask,
2762 kern_filter_sz,
2763 ib_filter_sz);
2764 if (actual_filter_sz <= 0)
2765 return -EINVAL;
2766 ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
2767 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
2768 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
2769 break;
2770 case IB_FLOW_SPEC_IPV6:
2771 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz);
2772 actual_filter_sz = spec_filter_size(kern_spec_mask,
2773 kern_filter_sz,
2774 ib_filter_sz);
2775 if (actual_filter_sz <= 0)
2776 return -EINVAL;
2777 ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
2778 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
2779 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
2780
2781 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
2782 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
2783 return -EINVAL;
2784 break;
2785 case IB_FLOW_SPEC_TCP:
2786 case IB_FLOW_SPEC_UDP:
2787 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
2788 actual_filter_sz = spec_filter_size(kern_spec_mask,
2789 kern_filter_sz,
2790 ib_filter_sz);
2791 if (actual_filter_sz <= 0)
2792 return -EINVAL;
2793 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
2794 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
2795 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
2796 break;
2797 case IB_FLOW_SPEC_VXLAN_TUNNEL:
2798 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz);
2799 actual_filter_sz = spec_filter_size(kern_spec_mask,
2800 kern_filter_sz,
2801 ib_filter_sz);
2802 if (actual_filter_sz <= 0)
2803 return -EINVAL;
2804 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
2805 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
2806 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
2807
2808 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
2809 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
2810 return -EINVAL;
2811 break;
2812 case IB_FLOW_SPEC_ESP:
2813 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz);
2814 actual_filter_sz = spec_filter_size(kern_spec_mask,
2815 kern_filter_sz,
2816 ib_filter_sz);
2817 if (actual_filter_sz <= 0)
2818 return -EINVAL;
2819 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp);
2820 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz);
2821 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz);
2822 break;
2823 case IB_FLOW_SPEC_GRE:
2824 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz);
2825 actual_filter_sz = spec_filter_size(kern_spec_mask,
2826 kern_filter_sz,
2827 ib_filter_sz);
2828 if (actual_filter_sz <= 0)
2829 return -EINVAL;
2830 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre);
2831 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz);
2832 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz);
2833 break;
2834 case IB_FLOW_SPEC_MPLS:
2835 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz);
2836 actual_filter_sz = spec_filter_size(kern_spec_mask,
2837 kern_filter_sz,
2838 ib_filter_sz);
2839 if (actual_filter_sz <= 0)
2840 return -EINVAL;
2841 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls);
2842 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz);
2843 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz);
2844 break;
2845 default:
2846 return -EINVAL;
2847 }
2848 return 0;
2849 }
2850
2851 static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
2852 union ib_flow_spec *ib_spec)
2853 {
2854 size_t kern_filter_sz;
2855 void *kern_spec_mask;
2856 void *kern_spec_val;
2857
2858 if (check_sub_overflow((size_t)kern_spec->hdr.size,
2859 sizeof(struct ib_uverbs_flow_spec_hdr),
2860 &kern_filter_sz))
2861 return -EINVAL;
2862
2863 kern_filter_sz /= 2;
2864
2865 kern_spec_val = (void *)kern_spec +
2866 sizeof(struct ib_uverbs_flow_spec_hdr);
2867 kern_spec_mask = kern_spec_val + kern_filter_sz;
2868
2869 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
2870 kern_spec_mask,
2871 kern_spec_val,
2872 kern_filter_sz, ib_spec);
2873 }
2874
2875 static int kern_spec_to_ib_spec(struct uverbs_attr_bundle *attrs,
2876 struct ib_uverbs_flow_spec *kern_spec,
2877 union ib_flow_spec *ib_spec,
2878 struct ib_uflow_resources *uflow_res)
2879 {
2880 if (kern_spec->reserved)
2881 return -EINVAL;
2882
2883 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
2884 return kern_spec_to_ib_spec_action(attrs, kern_spec, ib_spec,
2885 uflow_res);
2886 else
2887 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
2888 }
2889
2890 static int ib_uverbs_ex_create_wq(struct uverbs_attr_bundle *attrs)
2891 {
2892 struct ib_uverbs_ex_create_wq cmd;
2893 struct ib_uverbs_ex_create_wq_resp resp = {};
2894 struct ib_uwq_object *obj;
2895 int err = 0;
2896 struct ib_cq *cq;
2897 struct ib_pd *pd;
2898 struct ib_wq *wq;
2899 struct ib_wq_init_attr wq_init_attr = {};
2900 struct ib_device *ib_dev;
2901
2902 err = uverbs_request(attrs, &cmd, sizeof(cmd));
2903 if (err)
2904 return err;
2905
2906 if (cmd.comp_mask)
2907 return -EOPNOTSUPP;
2908
2909 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ, attrs,
2910 &ib_dev);
2911 if (IS_ERR(obj))
2912 return PTR_ERR(obj);
2913
2914 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs);
2915 if (!pd) {
2916 err = -EINVAL;
2917 goto err_uobj;
2918 }
2919
2920 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
2921 if (!cq) {
2922 err = -EINVAL;
2923 goto err_put_pd;
2924 }
2925
2926 wq_init_attr.cq = cq;
2927 wq_init_attr.max_sge = cmd.max_sge;
2928 wq_init_attr.max_wr = cmd.max_wr;
2929 wq_init_attr.wq_context = attrs->ufile;
2930 wq_init_attr.wq_type = cmd.wq_type;
2931 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
2932 wq_init_attr.create_flags = cmd.create_flags;
2933 obj->uevent.events_reported = 0;
2934 INIT_LIST_HEAD(&obj->uevent.event_list);
2935
2936 wq = pd->device->ops.create_wq(pd, &wq_init_attr, &attrs->driver_udata);
2937 if (IS_ERR(wq)) {
2938 err = PTR_ERR(wq);
2939 goto err_put_cq;
2940 }
2941
2942 wq->uobject = &obj->uevent.uobject;
2943 obj->uevent.uobject.object = wq;
2944 wq->wq_type = wq_init_attr.wq_type;
2945 wq->cq = cq;
2946 wq->pd = pd;
2947 wq->device = pd->device;
2948 wq->wq_context = wq_init_attr.wq_context;
2949 atomic_set(&wq->usecnt, 0);
2950 atomic_inc(&pd->usecnt);
2951 atomic_inc(&cq->usecnt);
2952 wq->uobject = &obj->uevent.uobject;
2953 obj->uevent.uobject.object = wq;
2954
2955 memset(&resp, 0, sizeof(resp));
2956 resp.wq_handle = obj->uevent.uobject.id;
2957 resp.max_sge = wq_init_attr.max_sge;
2958 resp.max_wr = wq_init_attr.max_wr;
2959 resp.wqn = wq->wq_num;
2960 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2961 err = uverbs_response(attrs, &resp, sizeof(resp));
2962 if (err)
2963 goto err_copy;
2964
2965 uobj_put_obj_read(pd);
2966 uobj_put_obj_read(cq);
2967 return uobj_alloc_commit(&obj->uevent.uobject, attrs);
2968
2969 err_copy:
2970 ib_destroy_wq(wq, uverbs_get_cleared_udata(attrs));
2971 err_put_cq:
2972 uobj_put_obj_read(cq);
2973 err_put_pd:
2974 uobj_put_obj_read(pd);
2975 err_uobj:
2976 uobj_alloc_abort(&obj->uevent.uobject, attrs);
2977
2978 return err;
2979 }
2980
2981 static int ib_uverbs_ex_destroy_wq(struct uverbs_attr_bundle *attrs)
2982 {
2983 struct ib_uverbs_ex_destroy_wq cmd;
2984 struct ib_uverbs_ex_destroy_wq_resp resp = {};
2985 struct ib_uobject *uobj;
2986 struct ib_uwq_object *obj;
2987 int ret;
2988
2989 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
2990 if (ret)
2991 return ret;
2992
2993 if (cmd.comp_mask)
2994 return -EOPNOTSUPP;
2995
2996 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
2997 uobj = uobj_get_destroy(UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
2998 if (IS_ERR(uobj))
2999 return PTR_ERR(uobj);
3000
3001 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
3002 resp.events_reported = obj->uevent.events_reported;
3003
3004 uobj_put_destroy(uobj);
3005
3006 return uverbs_response(attrs, &resp, sizeof(resp));
3007 }
3008
3009 static int ib_uverbs_ex_modify_wq(struct uverbs_attr_bundle *attrs)
3010 {
3011 struct ib_uverbs_ex_modify_wq cmd;
3012 struct ib_wq *wq;
3013 struct ib_wq_attr wq_attr = {};
3014 int ret;
3015
3016 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3017 if (ret)
3018 return ret;
3019
3020 if (!cmd.attr_mask)
3021 return -EINVAL;
3022
3023 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3024 return -EINVAL;
3025
3026 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, attrs);
3027 if (!wq)
3028 return -EINVAL;
3029
3030 wq_attr.curr_wq_state = cmd.curr_wq_state;
3031 wq_attr.wq_state = cmd.wq_state;
3032 if (cmd.attr_mask & IB_WQ_FLAGS) {
3033 wq_attr.flags = cmd.flags;
3034 wq_attr.flags_mask = cmd.flags_mask;
3035 }
3036 ret = wq->device->ops.modify_wq(wq, &wq_attr, cmd.attr_mask,
3037 &attrs->driver_udata);
3038 uobj_put_obj_read(wq);
3039 return ret;
3040 }
3041
3042 static int ib_uverbs_ex_create_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3043 {
3044 struct ib_uverbs_ex_create_rwq_ind_table cmd;
3045 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3046 struct ib_uobject *uobj;
3047 int err;
3048 struct ib_rwq_ind_table_init_attr init_attr = {};
3049 struct ib_rwq_ind_table *rwq_ind_tbl;
3050 struct ib_wq **wqs = NULL;
3051 u32 *wqs_handles = NULL;
3052 struct ib_wq *wq = NULL;
3053 int i, j, num_read_wqs;
3054 u32 num_wq_handles;
3055 struct uverbs_req_iter iter;
3056 struct ib_device *ib_dev;
3057
3058 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3059 if (err)
3060 return err;
3061
3062 if (cmd.comp_mask)
3063 return -EOPNOTSUPP;
3064
3065 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3066 return -EINVAL;
3067
3068 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3069 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3070 GFP_KERNEL);
3071 if (!wqs_handles)
3072 return -ENOMEM;
3073
3074 err = uverbs_request_next(&iter, wqs_handles,
3075 num_wq_handles * sizeof(__u32));
3076 if (err)
3077 goto err_free;
3078
3079 err = uverbs_request_finish(&iter);
3080 if (err)
3081 goto err_free;
3082
3083 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3084 if (!wqs) {
3085 err = -ENOMEM;
3086 goto err_free;
3087 }
3088
3089 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3090 num_read_wqs++) {
3091 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ,
3092 wqs_handles[num_read_wqs], attrs);
3093 if (!wq) {
3094 err = -EINVAL;
3095 goto put_wqs;
3096 }
3097
3098 wqs[num_read_wqs] = wq;
3099 }
3100
3101 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, attrs, &ib_dev);
3102 if (IS_ERR(uobj)) {
3103 err = PTR_ERR(uobj);
3104 goto put_wqs;
3105 }
3106
3107 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3108 init_attr.ind_tbl = wqs;
3109
3110 rwq_ind_tbl = ib_dev->ops.create_rwq_ind_table(ib_dev, &init_attr,
3111 &attrs->driver_udata);
3112
3113 if (IS_ERR(rwq_ind_tbl)) {
3114 err = PTR_ERR(rwq_ind_tbl);
3115 goto err_uobj;
3116 }
3117
3118 rwq_ind_tbl->ind_tbl = wqs;
3119 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3120 rwq_ind_tbl->uobject = uobj;
3121 uobj->object = rwq_ind_tbl;
3122 rwq_ind_tbl->device = ib_dev;
3123 atomic_set(&rwq_ind_tbl->usecnt, 0);
3124
3125 for (i = 0; i < num_wq_handles; i++)
3126 atomic_inc(&wqs[i]->usecnt);
3127
3128 resp.ind_tbl_handle = uobj->id;
3129 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3130 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3131
3132 err = uverbs_response(attrs, &resp, sizeof(resp));
3133 if (err)
3134 goto err_copy;
3135
3136 kfree(wqs_handles);
3137
3138 for (j = 0; j < num_read_wqs; j++)
3139 uobj_put_obj_read(wqs[j]);
3140
3141 return uobj_alloc_commit(uobj, attrs);
3142
3143 err_copy:
3144 ib_destroy_rwq_ind_table(rwq_ind_tbl);
3145 err_uobj:
3146 uobj_alloc_abort(uobj, attrs);
3147 put_wqs:
3148 for (j = 0; j < num_read_wqs; j++)
3149 uobj_put_obj_read(wqs[j]);
3150 err_free:
3151 kfree(wqs_handles);
3152 kfree(wqs);
3153 return err;
3154 }
3155
3156 static int ib_uverbs_ex_destroy_rwq_ind_table(struct uverbs_attr_bundle *attrs)
3157 {
3158 struct ib_uverbs_ex_destroy_rwq_ind_table cmd;
3159 int ret;
3160
3161 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3162 if (ret)
3163 return ret;
3164
3165 if (cmd.comp_mask)
3166 return -EOPNOTSUPP;
3167
3168 return uobj_perform_destroy(UVERBS_OBJECT_RWQ_IND_TBL,
3169 cmd.ind_tbl_handle, attrs);
3170 }
3171
3172 static int ib_uverbs_ex_create_flow(struct uverbs_attr_bundle *attrs)
3173 {
3174 struct ib_uverbs_create_flow cmd;
3175 struct ib_uverbs_create_flow_resp resp;
3176 struct ib_uobject *uobj;
3177 struct ib_flow *flow_id;
3178 struct ib_uverbs_flow_attr *kern_flow_attr;
3179 struct ib_flow_attr *flow_attr;
3180 struct ib_qp *qp;
3181 struct ib_uflow_resources *uflow_res;
3182 struct ib_uverbs_flow_spec_hdr *kern_spec;
3183 struct uverbs_req_iter iter;
3184 int err;
3185 void *ib_spec;
3186 int i;
3187 struct ib_device *ib_dev;
3188
3189 err = uverbs_request_start(attrs, &iter, &cmd, sizeof(cmd));
3190 if (err)
3191 return err;
3192
3193 if (cmd.comp_mask)
3194 return -EINVAL;
3195
3196 if (!capable(CAP_NET_RAW))
3197 return -EPERM;
3198
3199 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3200 return -EINVAL;
3201
3202 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3203 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3204 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3205 return -EINVAL;
3206
3207 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3208 return -EINVAL;
3209
3210 if (cmd.flow_attr.size >
3211 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3212 return -EINVAL;
3213
3214 if (cmd.flow_attr.reserved[0] ||
3215 cmd.flow_attr.reserved[1])
3216 return -EINVAL;
3217
3218 if (cmd.flow_attr.num_of_specs) {
3219 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3220 GFP_KERNEL);
3221 if (!kern_flow_attr)
3222 return -ENOMEM;
3223
3224 *kern_flow_attr = cmd.flow_attr;
3225 err = uverbs_request_next(&iter, &kern_flow_attr->flow_specs,
3226 cmd.flow_attr.size);
3227 if (err)
3228 goto err_free_attr;
3229 } else {
3230 kern_flow_attr = &cmd.flow_attr;
3231 }
3232
3233 err = uverbs_request_finish(&iter);
3234 if (err)
3235 goto err_free_attr;
3236
3237 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, attrs, &ib_dev);
3238 if (IS_ERR(uobj)) {
3239 err = PTR_ERR(uobj);
3240 goto err_free_attr;
3241 }
3242
3243 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, attrs);
3244 if (!qp) {
3245 err = -EINVAL;
3246 goto err_uobj;
3247 }
3248
3249 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) {
3250 err = -EINVAL;
3251 goto err_put;
3252 }
3253
3254 flow_attr = kzalloc(struct_size(flow_attr, flows,
3255 cmd.flow_attr.num_of_specs), GFP_KERNEL);
3256 if (!flow_attr) {
3257 err = -ENOMEM;
3258 goto err_put;
3259 }
3260 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs);
3261 if (!uflow_res) {
3262 err = -ENOMEM;
3263 goto err_free_flow_attr;
3264 }
3265
3266 flow_attr->type = kern_flow_attr->type;
3267 flow_attr->priority = kern_flow_attr->priority;
3268 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3269 flow_attr->port = kern_flow_attr->port;
3270 flow_attr->flags = kern_flow_attr->flags;
3271 flow_attr->size = sizeof(*flow_attr);
3272
3273 kern_spec = kern_flow_attr->flow_specs;
3274 ib_spec = flow_attr + 1;
3275 for (i = 0; i < flow_attr->num_of_specs &&
3276 cmd.flow_attr.size >= sizeof(*kern_spec) &&
3277 cmd.flow_attr.size >= kern_spec->size;
3278 i++) {
3279 err = kern_spec_to_ib_spec(
3280 attrs, (struct ib_uverbs_flow_spec *)kern_spec,
3281 ib_spec, uflow_res);
3282 if (err)
3283 goto err_free;
3284
3285 flow_attr->size +=
3286 ((union ib_flow_spec *) ib_spec)->size;
3287 cmd.flow_attr.size -= kern_spec->size;
3288 kern_spec = ((void *)kern_spec) + kern_spec->size;
3289 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3290 }
3291 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3292 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
3293 i, cmd.flow_attr.size);
3294 err = -EINVAL;
3295 goto err_free;
3296 }
3297
3298 flow_id = qp->device->ops.create_flow(
3299 qp, flow_attr, IB_FLOW_DOMAIN_USER, &attrs->driver_udata);
3300
3301 if (IS_ERR(flow_id)) {
3302 err = PTR_ERR(flow_id);
3303 goto err_free;
3304 }
3305
3306 ib_set_flow(uobj, flow_id, qp, qp->device, uflow_res);
3307
3308 memset(&resp, 0, sizeof(resp));
3309 resp.flow_handle = uobj->id;
3310
3311 err = uverbs_response(attrs, &resp, sizeof(resp));
3312 if (err)
3313 goto err_copy;
3314
3315 uobj_put_obj_read(qp);
3316 kfree(flow_attr);
3317 if (cmd.flow_attr.num_of_specs)
3318 kfree(kern_flow_attr);
3319 return uobj_alloc_commit(uobj, attrs);
3320 err_copy:
3321 if (!qp->device->ops.destroy_flow(flow_id))
3322 atomic_dec(&qp->usecnt);
3323 err_free:
3324 ib_uverbs_flow_resources_free(uflow_res);
3325 err_free_flow_attr:
3326 kfree(flow_attr);
3327 err_put:
3328 uobj_put_obj_read(qp);
3329 err_uobj:
3330 uobj_alloc_abort(uobj, attrs);
3331 err_free_attr:
3332 if (cmd.flow_attr.num_of_specs)
3333 kfree(kern_flow_attr);
3334 return err;
3335 }
3336
3337 static int ib_uverbs_ex_destroy_flow(struct uverbs_attr_bundle *attrs)
3338 {
3339 struct ib_uverbs_destroy_flow cmd;
3340 int ret;
3341
3342 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3343 if (ret)
3344 return ret;
3345
3346 if (cmd.comp_mask)
3347 return -EINVAL;
3348
3349 return uobj_perform_destroy(UVERBS_OBJECT_FLOW, cmd.flow_handle, attrs);
3350 }
3351
3352 static int __uverbs_create_xsrq(struct uverbs_attr_bundle *attrs,
3353 struct ib_uverbs_create_xsrq *cmd,
3354 struct ib_udata *udata)
3355 {
3356 struct ib_uverbs_create_srq_resp resp;
3357 struct ib_usrq_object *obj;
3358 struct ib_pd *pd;
3359 struct ib_srq *srq;
3360 struct ib_uobject *uninitialized_var(xrcd_uobj);
3361 struct ib_srq_init_attr attr;
3362 int ret;
3363 struct ib_device *ib_dev;
3364
3365 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ, attrs,
3366 &ib_dev);
3367 if (IS_ERR(obj))
3368 return PTR_ERR(obj);
3369
3370 if (cmd->srq_type == IB_SRQT_TM)
3371 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
3372
3373 if (cmd->srq_type == IB_SRQT_XRC) {
3374 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle,
3375 attrs);
3376 if (IS_ERR(xrcd_uobj)) {
3377 ret = -EINVAL;
3378 goto err;
3379 }
3380
3381 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3382 if (!attr.ext.xrc.xrcd) {
3383 ret = -EINVAL;
3384 goto err_put_xrcd;
3385 }
3386
3387 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3388 atomic_inc(&obj->uxrcd->refcnt);
3389 }
3390
3391 if (ib_srq_has_cq(cmd->srq_type)) {
3392 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ,
3393 cmd->cq_handle, attrs);
3394 if (!attr.ext.cq) {
3395 ret = -EINVAL;
3396 goto err_put_xrcd;
3397 }
3398 }
3399
3400 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, attrs);
3401 if (!pd) {
3402 ret = -EINVAL;
3403 goto err_put_cq;
3404 }
3405
3406 attr.event_handler = ib_uverbs_srq_event_handler;
3407 attr.srq_context = attrs->ufile;
3408 attr.srq_type = cmd->srq_type;
3409 attr.attr.max_wr = cmd->max_wr;
3410 attr.attr.max_sge = cmd->max_sge;
3411 attr.attr.srq_limit = cmd->srq_limit;
3412
3413 obj->uevent.events_reported = 0;
3414 INIT_LIST_HEAD(&obj->uevent.event_list);
3415
3416 srq = rdma_zalloc_drv_obj(ib_dev, ib_srq);
3417 if (!srq) {
3418 ret = -ENOMEM;
3419 goto err_put;
3420 }
3421
3422 srq->device = pd->device;
3423 srq->pd = pd;
3424 srq->srq_type = cmd->srq_type;
3425 srq->uobject = &obj->uevent.uobject;
3426 srq->event_handler = attr.event_handler;
3427 srq->srq_context = attr.srq_context;
3428
3429 ret = pd->device->ops.create_srq(srq, &attr, udata);
3430 if (ret)
3431 goto err_free;
3432
3433 if (ib_srq_has_cq(cmd->srq_type)) {
3434 srq->ext.cq = attr.ext.cq;
3435 atomic_inc(&attr.ext.cq->usecnt);
3436 }
3437
3438 if (cmd->srq_type == IB_SRQT_XRC) {
3439 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
3440 atomic_inc(&attr.ext.xrc.xrcd->usecnt);
3441 }
3442
3443 atomic_inc(&pd->usecnt);
3444 atomic_set(&srq->usecnt, 0);
3445
3446 obj->uevent.uobject.object = srq;
3447 obj->uevent.uobject.user_handle = cmd->user_handle;
3448
3449 memset(&resp, 0, sizeof resp);
3450 resp.srq_handle = obj->uevent.uobject.id;
3451 resp.max_wr = attr.attr.max_wr;
3452 resp.max_sge = attr.attr.max_sge;
3453 if (cmd->srq_type == IB_SRQT_XRC)
3454 resp.srqn = srq->ext.xrc.srq_num;
3455
3456 ret = uverbs_response(attrs, &resp, sizeof(resp));
3457 if (ret)
3458 goto err_copy;
3459
3460 if (cmd->srq_type == IB_SRQT_XRC)
3461 uobj_put_read(xrcd_uobj);
3462
3463 if (ib_srq_has_cq(cmd->srq_type))
3464 uobj_put_obj_read(attr.ext.cq);
3465
3466 uobj_put_obj_read(pd);
3467 return uobj_alloc_commit(&obj->uevent.uobject, attrs);
3468
3469 err_copy:
3470 ib_destroy_srq_user(srq, uverbs_get_cleared_udata(attrs));
3471
3472 srq = NULL;
3473 err_free:
3474 kfree(srq);
3475 err_put:
3476 uobj_put_obj_read(pd);
3477
3478 err_put_cq:
3479 if (ib_srq_has_cq(cmd->srq_type))
3480 uobj_put_obj_read(attr.ext.cq);
3481
3482 err_put_xrcd:
3483 if (cmd->srq_type == IB_SRQT_XRC) {
3484 atomic_dec(&obj->uxrcd->refcnt);
3485 uobj_put_read(xrcd_uobj);
3486 }
3487
3488 err:
3489 uobj_alloc_abort(&obj->uevent.uobject, attrs);
3490 return ret;
3491 }
3492
3493 static int ib_uverbs_create_srq(struct uverbs_attr_bundle *attrs)
3494 {
3495 struct ib_uverbs_create_srq cmd;
3496 struct ib_uverbs_create_xsrq xcmd;
3497 int ret;
3498
3499 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3500 if (ret)
3501 return ret;
3502
3503 memset(&xcmd, 0, sizeof(xcmd));
3504 xcmd.response = cmd.response;
3505 xcmd.user_handle = cmd.user_handle;
3506 xcmd.srq_type = IB_SRQT_BASIC;
3507 xcmd.pd_handle = cmd.pd_handle;
3508 xcmd.max_wr = cmd.max_wr;
3509 xcmd.max_sge = cmd.max_sge;
3510 xcmd.srq_limit = cmd.srq_limit;
3511
3512 return __uverbs_create_xsrq(attrs, &xcmd, &attrs->driver_udata);
3513 }
3514
3515 static int ib_uverbs_create_xsrq(struct uverbs_attr_bundle *attrs)
3516 {
3517 struct ib_uverbs_create_xsrq cmd;
3518 int ret;
3519
3520 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3521 if (ret)
3522 return ret;
3523
3524 return __uverbs_create_xsrq(attrs, &cmd, &attrs->driver_udata);
3525 }
3526
3527 static int ib_uverbs_modify_srq(struct uverbs_attr_bundle *attrs)
3528 {
3529 struct ib_uverbs_modify_srq cmd;
3530 struct ib_srq *srq;
3531 struct ib_srq_attr attr;
3532 int ret;
3533
3534 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3535 if (ret)
3536 return ret;
3537
3538 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3539 if (!srq)
3540 return -EINVAL;
3541
3542 attr.max_wr = cmd.max_wr;
3543 attr.srq_limit = cmd.srq_limit;
3544
3545 ret = srq->device->ops.modify_srq(srq, &attr, cmd.attr_mask,
3546 &attrs->driver_udata);
3547
3548 uobj_put_obj_read(srq);
3549
3550 return ret;
3551 }
3552
3553 static int ib_uverbs_query_srq(struct uverbs_attr_bundle *attrs)
3554 {
3555 struct ib_uverbs_query_srq cmd;
3556 struct ib_uverbs_query_srq_resp resp;
3557 struct ib_srq_attr attr;
3558 struct ib_srq *srq;
3559 int ret;
3560
3561 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3562 if (ret)
3563 return ret;
3564
3565 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3566 if (!srq)
3567 return -EINVAL;
3568
3569 ret = ib_query_srq(srq, &attr);
3570
3571 uobj_put_obj_read(srq);
3572
3573 if (ret)
3574 return ret;
3575
3576 memset(&resp, 0, sizeof resp);
3577
3578 resp.max_wr = attr.max_wr;
3579 resp.max_sge = attr.max_sge;
3580 resp.srq_limit = attr.srq_limit;
3581
3582 return uverbs_response(attrs, &resp, sizeof(resp));
3583 }
3584
3585 static int ib_uverbs_destroy_srq(struct uverbs_attr_bundle *attrs)
3586 {
3587 struct ib_uverbs_destroy_srq cmd;
3588 struct ib_uverbs_destroy_srq_resp resp;
3589 struct ib_uobject *uobj;
3590 struct ib_uevent_object *obj;
3591 int ret;
3592
3593 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3594 if (ret)
3595 return ret;
3596
3597 uobj = uobj_get_destroy(UVERBS_OBJECT_SRQ, cmd.srq_handle, attrs);
3598 if (IS_ERR(uobj))
3599 return PTR_ERR(uobj);
3600
3601 obj = container_of(uobj, struct ib_uevent_object, uobject);
3602 memset(&resp, 0, sizeof(resp));
3603 resp.events_reported = obj->events_reported;
3604
3605 uobj_put_destroy(uobj);
3606
3607 return uverbs_response(attrs, &resp, sizeof(resp));
3608 }
3609
3610 static int ib_uverbs_ex_query_device(struct uverbs_attr_bundle *attrs)
3611 {
3612 struct ib_uverbs_ex_query_device_resp resp = {};
3613 struct ib_uverbs_ex_query_device cmd;
3614 struct ib_device_attr attr = {0};
3615 struct ib_ucontext *ucontext;
3616 struct ib_device *ib_dev;
3617 int err;
3618
3619 ucontext = ib_uverbs_get_ucontext(attrs);
3620 if (IS_ERR(ucontext))
3621 return PTR_ERR(ucontext);
3622 ib_dev = ucontext->device;
3623
3624 err = uverbs_request(attrs, &cmd, sizeof(cmd));
3625 if (err)
3626 return err;
3627
3628 if (cmd.comp_mask)
3629 return -EINVAL;
3630
3631 if (cmd.reserved)
3632 return -EINVAL;
3633
3634 err = ib_dev->ops.query_device(ib_dev, &attr, &attrs->driver_udata);
3635 if (err)
3636 return err;
3637
3638 copy_query_dev_fields(ucontext, &resp.base, &attr);
3639
3640 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3641 resp.odp_caps.per_transport_caps.rc_odp_caps =
3642 attr.odp_caps.per_transport_caps.rc_odp_caps;
3643 resp.odp_caps.per_transport_caps.uc_odp_caps =
3644 attr.odp_caps.per_transport_caps.uc_odp_caps;
3645 resp.odp_caps.per_transport_caps.ud_odp_caps =
3646 attr.odp_caps.per_transport_caps.ud_odp_caps;
3647 resp.xrc_odp_caps = attr.odp_caps.per_transport_caps.xrc_odp_caps;
3648
3649 resp.timestamp_mask = attr.timestamp_mask;
3650 resp.hca_core_clock = attr.hca_core_clock;
3651 resp.device_cap_flags_ex = attr.device_cap_flags;
3652 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
3653 resp.rss_caps.max_rwq_indirection_tables =
3654 attr.rss_caps.max_rwq_indirection_tables;
3655 resp.rss_caps.max_rwq_indirection_table_size =
3656 attr.rss_caps.max_rwq_indirection_table_size;
3657 resp.max_wq_type_rq = attr.max_wq_type_rq;
3658 resp.raw_packet_caps = attr.raw_packet_caps;
3659 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size;
3660 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags;
3661 resp.tm_caps.max_ops = attr.tm_caps.max_ops;
3662 resp.tm_caps.max_sge = attr.tm_caps.max_sge;
3663 resp.tm_caps.flags = attr.tm_caps.flags;
3664 resp.cq_moderation_caps.max_cq_moderation_count =
3665 attr.cq_caps.max_cq_moderation_count;
3666 resp.cq_moderation_caps.max_cq_moderation_period =
3667 attr.cq_caps.max_cq_moderation_period;
3668 resp.max_dm_size = attr.max_dm_size;
3669 resp.response_length = uverbs_response_length(attrs, sizeof(resp));
3670
3671 return uverbs_response(attrs, &resp, sizeof(resp));
3672 }
3673
3674 static int ib_uverbs_ex_modify_cq(struct uverbs_attr_bundle *attrs)
3675 {
3676 struct ib_uverbs_ex_modify_cq cmd;
3677 struct ib_cq *cq;
3678 int ret;
3679
3680 ret = uverbs_request(attrs, &cmd, sizeof(cmd));
3681 if (ret)
3682 return ret;
3683
3684 if (!cmd.attr_mask || cmd.reserved)
3685 return -EINVAL;
3686
3687 if (cmd.attr_mask > IB_CQ_MODERATE)
3688 return -EOPNOTSUPP;
3689
3690 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, attrs);
3691 if (!cq)
3692 return -EINVAL;
3693
3694 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period);
3695
3696 uobj_put_obj_read(cq);
3697
3698 return ret;
3699 }
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710 #define UAPI_DEF_WRITE_IO(req, resp) \
3711 .write.has_resp = 1 + \
3712 BUILD_BUG_ON_ZERO(offsetof(req, response) != 0) + \
3713 BUILD_BUG_ON_ZERO(sizeof(((req *)0)->response) != \
3714 sizeof(u64)), \
3715 .write.req_size = sizeof(req), .write.resp_size = sizeof(resp)
3716
3717 #define UAPI_DEF_WRITE_I(req) .write.req_size = sizeof(req)
3718
3719 #define UAPI_DEF_WRITE_UDATA_IO(req, resp) \
3720 UAPI_DEF_WRITE_IO(req, resp), \
3721 .write.has_udata = \
3722 1 + \
3723 BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3724 sizeof(req)) + \
3725 BUILD_BUG_ON_ZERO(offsetof(resp, driver_data) != \
3726 sizeof(resp))
3727
3728 #define UAPI_DEF_WRITE_UDATA_I(req) \
3729 UAPI_DEF_WRITE_I(req), \
3730 .write.has_udata = \
3731 1 + BUILD_BUG_ON_ZERO(offsetof(req, driver_data) != \
3732 sizeof(req))
3733
3734
3735
3736
3737
3738 #define UAPI_DEF_WRITE_IO_EX(req, req_last_member, resp, resp_last_member) \
3739 .write.has_resp = 1, \
3740 .write.req_size = offsetofend(req, req_last_member), \
3741 .write.resp_size = offsetofend(resp, resp_last_member)
3742
3743 #define UAPI_DEF_WRITE_I_EX(req, req_last_member) \
3744 .write.req_size = offsetofend(req, req_last_member)
3745
3746 const struct uapi_definition uverbs_def_write_intf[] = {
3747 DECLARE_UVERBS_OBJECT(
3748 UVERBS_OBJECT_AH,
3749 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_AH,
3750 ib_uverbs_create_ah,
3751 UAPI_DEF_WRITE_UDATA_IO(
3752 struct ib_uverbs_create_ah,
3753 struct ib_uverbs_create_ah_resp),
3754 UAPI_DEF_METHOD_NEEDS_FN(create_ah)),
3755 DECLARE_UVERBS_WRITE(
3756 IB_USER_VERBS_CMD_DESTROY_AH,
3757 ib_uverbs_destroy_ah,
3758 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_ah),
3759 UAPI_DEF_METHOD_NEEDS_FN(destroy_ah))),
3760
3761 DECLARE_UVERBS_OBJECT(
3762 UVERBS_OBJECT_COMP_CHANNEL,
3763 DECLARE_UVERBS_WRITE(
3764 IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
3765 ib_uverbs_create_comp_channel,
3766 UAPI_DEF_WRITE_IO(
3767 struct ib_uverbs_create_comp_channel,
3768 struct ib_uverbs_create_comp_channel_resp))),
3769
3770 DECLARE_UVERBS_OBJECT(
3771 UVERBS_OBJECT_CQ,
3772 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_CQ,
3773 ib_uverbs_create_cq,
3774 UAPI_DEF_WRITE_UDATA_IO(
3775 struct ib_uverbs_create_cq,
3776 struct ib_uverbs_create_cq_resp),
3777 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3778 DECLARE_UVERBS_WRITE(
3779 IB_USER_VERBS_CMD_DESTROY_CQ,
3780 ib_uverbs_destroy_cq,
3781 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_cq,
3782 struct ib_uverbs_destroy_cq_resp),
3783 UAPI_DEF_METHOD_NEEDS_FN(destroy_cq)),
3784 DECLARE_UVERBS_WRITE(
3785 IB_USER_VERBS_CMD_POLL_CQ,
3786 ib_uverbs_poll_cq,
3787 UAPI_DEF_WRITE_IO(struct ib_uverbs_poll_cq,
3788 struct ib_uverbs_poll_cq_resp),
3789 UAPI_DEF_METHOD_NEEDS_FN(poll_cq)),
3790 DECLARE_UVERBS_WRITE(
3791 IB_USER_VERBS_CMD_REQ_NOTIFY_CQ,
3792 ib_uverbs_req_notify_cq,
3793 UAPI_DEF_WRITE_I(struct ib_uverbs_req_notify_cq),
3794 UAPI_DEF_METHOD_NEEDS_FN(req_notify_cq)),
3795 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_RESIZE_CQ,
3796 ib_uverbs_resize_cq,
3797 UAPI_DEF_WRITE_UDATA_IO(
3798 struct ib_uverbs_resize_cq,
3799 struct ib_uverbs_resize_cq_resp),
3800 UAPI_DEF_METHOD_NEEDS_FN(resize_cq)),
3801 DECLARE_UVERBS_WRITE_EX(
3802 IB_USER_VERBS_EX_CMD_CREATE_CQ,
3803 ib_uverbs_ex_create_cq,
3804 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_cq,
3805 reserved,
3806 struct ib_uverbs_ex_create_cq_resp,
3807 response_length),
3808 UAPI_DEF_METHOD_NEEDS_FN(create_cq)),
3809 DECLARE_UVERBS_WRITE_EX(
3810 IB_USER_VERBS_EX_CMD_MODIFY_CQ,
3811 ib_uverbs_ex_modify_cq,
3812 UAPI_DEF_WRITE_I(struct ib_uverbs_ex_modify_cq),
3813 UAPI_DEF_METHOD_NEEDS_FN(create_cq))),
3814
3815 DECLARE_UVERBS_OBJECT(
3816 UVERBS_OBJECT_DEVICE,
3817 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_GET_CONTEXT,
3818 ib_uverbs_get_context,
3819 UAPI_DEF_WRITE_UDATA_IO(
3820 struct ib_uverbs_get_context,
3821 struct ib_uverbs_get_context_resp)),
3822 DECLARE_UVERBS_WRITE(
3823 IB_USER_VERBS_CMD_QUERY_DEVICE,
3824 ib_uverbs_query_device,
3825 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_device,
3826 struct ib_uverbs_query_device_resp)),
3827 DECLARE_UVERBS_WRITE(
3828 IB_USER_VERBS_CMD_QUERY_PORT,
3829 ib_uverbs_query_port,
3830 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_port,
3831 struct ib_uverbs_query_port_resp),
3832 UAPI_DEF_METHOD_NEEDS_FN(query_port)),
3833 DECLARE_UVERBS_WRITE_EX(
3834 IB_USER_VERBS_EX_CMD_QUERY_DEVICE,
3835 ib_uverbs_ex_query_device,
3836 UAPI_DEF_WRITE_IO_EX(
3837 struct ib_uverbs_ex_query_device,
3838 reserved,
3839 struct ib_uverbs_ex_query_device_resp,
3840 response_length),
3841 UAPI_DEF_METHOD_NEEDS_FN(query_device)),
3842 UAPI_DEF_OBJ_NEEDS_FN(alloc_ucontext),
3843 UAPI_DEF_OBJ_NEEDS_FN(dealloc_ucontext)),
3844
3845 DECLARE_UVERBS_OBJECT(
3846 UVERBS_OBJECT_FLOW,
3847 DECLARE_UVERBS_WRITE_EX(
3848 IB_USER_VERBS_EX_CMD_CREATE_FLOW,
3849 ib_uverbs_ex_create_flow,
3850 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_create_flow,
3851 flow_attr,
3852 struct ib_uverbs_create_flow_resp,
3853 flow_handle),
3854 UAPI_DEF_METHOD_NEEDS_FN(create_flow)),
3855 DECLARE_UVERBS_WRITE_EX(
3856 IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
3857 ib_uverbs_ex_destroy_flow,
3858 UAPI_DEF_WRITE_I(struct ib_uverbs_destroy_flow),
3859 UAPI_DEF_METHOD_NEEDS_FN(destroy_flow))),
3860
3861 DECLARE_UVERBS_OBJECT(
3862 UVERBS_OBJECT_MR,
3863 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_DEREG_MR,
3864 ib_uverbs_dereg_mr,
3865 UAPI_DEF_WRITE_I(struct ib_uverbs_dereg_mr),
3866 UAPI_DEF_METHOD_NEEDS_FN(dereg_mr)),
3867 DECLARE_UVERBS_WRITE(
3868 IB_USER_VERBS_CMD_REG_MR,
3869 ib_uverbs_reg_mr,
3870 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_reg_mr,
3871 struct ib_uverbs_reg_mr_resp),
3872 UAPI_DEF_METHOD_NEEDS_FN(reg_user_mr)),
3873 DECLARE_UVERBS_WRITE(
3874 IB_USER_VERBS_CMD_REREG_MR,
3875 ib_uverbs_rereg_mr,
3876 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_rereg_mr,
3877 struct ib_uverbs_rereg_mr_resp),
3878 UAPI_DEF_METHOD_NEEDS_FN(rereg_user_mr))),
3879
3880 DECLARE_UVERBS_OBJECT(
3881 UVERBS_OBJECT_MW,
3882 DECLARE_UVERBS_WRITE(
3883 IB_USER_VERBS_CMD_ALLOC_MW,
3884 ib_uverbs_alloc_mw,
3885 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_mw,
3886 struct ib_uverbs_alloc_mw_resp),
3887 UAPI_DEF_METHOD_NEEDS_FN(alloc_mw)),
3888 DECLARE_UVERBS_WRITE(
3889 IB_USER_VERBS_CMD_DEALLOC_MW,
3890 ib_uverbs_dealloc_mw,
3891 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_mw),
3892 UAPI_DEF_METHOD_NEEDS_FN(dealloc_mw))),
3893
3894 DECLARE_UVERBS_OBJECT(
3895 UVERBS_OBJECT_PD,
3896 DECLARE_UVERBS_WRITE(
3897 IB_USER_VERBS_CMD_ALLOC_PD,
3898 ib_uverbs_alloc_pd,
3899 UAPI_DEF_WRITE_UDATA_IO(struct ib_uverbs_alloc_pd,
3900 struct ib_uverbs_alloc_pd_resp),
3901 UAPI_DEF_METHOD_NEEDS_FN(alloc_pd)),
3902 DECLARE_UVERBS_WRITE(
3903 IB_USER_VERBS_CMD_DEALLOC_PD,
3904 ib_uverbs_dealloc_pd,
3905 UAPI_DEF_WRITE_I(struct ib_uverbs_dealloc_pd),
3906 UAPI_DEF_METHOD_NEEDS_FN(dealloc_pd))),
3907
3908 DECLARE_UVERBS_OBJECT(
3909 UVERBS_OBJECT_QP,
3910 DECLARE_UVERBS_WRITE(
3911 IB_USER_VERBS_CMD_ATTACH_MCAST,
3912 ib_uverbs_attach_mcast,
3913 UAPI_DEF_WRITE_I(struct ib_uverbs_attach_mcast),
3914 UAPI_DEF_METHOD_NEEDS_FN(attach_mcast),
3915 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3916 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_QP,
3917 ib_uverbs_create_qp,
3918 UAPI_DEF_WRITE_UDATA_IO(
3919 struct ib_uverbs_create_qp,
3920 struct ib_uverbs_create_qp_resp),
3921 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3922 DECLARE_UVERBS_WRITE(
3923 IB_USER_VERBS_CMD_DESTROY_QP,
3924 ib_uverbs_destroy_qp,
3925 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_qp,
3926 struct ib_uverbs_destroy_qp_resp),
3927 UAPI_DEF_METHOD_NEEDS_FN(destroy_qp)),
3928 DECLARE_UVERBS_WRITE(
3929 IB_USER_VERBS_CMD_DETACH_MCAST,
3930 ib_uverbs_detach_mcast,
3931 UAPI_DEF_WRITE_I(struct ib_uverbs_detach_mcast),
3932 UAPI_DEF_METHOD_NEEDS_FN(detach_mcast)),
3933 DECLARE_UVERBS_WRITE(
3934 IB_USER_VERBS_CMD_MODIFY_QP,
3935 ib_uverbs_modify_qp,
3936 UAPI_DEF_WRITE_I(struct ib_uverbs_modify_qp),
3937 UAPI_DEF_METHOD_NEEDS_FN(modify_qp)),
3938 DECLARE_UVERBS_WRITE(
3939 IB_USER_VERBS_CMD_POST_RECV,
3940 ib_uverbs_post_recv,
3941 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_recv,
3942 struct ib_uverbs_post_recv_resp),
3943 UAPI_DEF_METHOD_NEEDS_FN(post_recv)),
3944 DECLARE_UVERBS_WRITE(
3945 IB_USER_VERBS_CMD_POST_SEND,
3946 ib_uverbs_post_send,
3947 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_send,
3948 struct ib_uverbs_post_send_resp),
3949 UAPI_DEF_METHOD_NEEDS_FN(post_send)),
3950 DECLARE_UVERBS_WRITE(
3951 IB_USER_VERBS_CMD_QUERY_QP,
3952 ib_uverbs_query_qp,
3953 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_qp,
3954 struct ib_uverbs_query_qp_resp),
3955 UAPI_DEF_METHOD_NEEDS_FN(query_qp)),
3956 DECLARE_UVERBS_WRITE_EX(
3957 IB_USER_VERBS_EX_CMD_CREATE_QP,
3958 ib_uverbs_ex_create_qp,
3959 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_qp,
3960 comp_mask,
3961 struct ib_uverbs_ex_create_qp_resp,
3962 response_length),
3963 UAPI_DEF_METHOD_NEEDS_FN(create_qp)),
3964 DECLARE_UVERBS_WRITE_EX(
3965 IB_USER_VERBS_EX_CMD_MODIFY_QP,
3966 ib_uverbs_ex_modify_qp,
3967 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_modify_qp,
3968 base,
3969 struct ib_uverbs_ex_modify_qp_resp,
3970 response_length),
3971 UAPI_DEF_METHOD_NEEDS_FN(modify_qp))),
3972
3973 DECLARE_UVERBS_OBJECT(
3974 UVERBS_OBJECT_RWQ_IND_TBL,
3975 DECLARE_UVERBS_WRITE_EX(
3976 IB_USER_VERBS_EX_CMD_CREATE_RWQ_IND_TBL,
3977 ib_uverbs_ex_create_rwq_ind_table,
3978 UAPI_DEF_WRITE_IO_EX(
3979 struct ib_uverbs_ex_create_rwq_ind_table,
3980 log_ind_tbl_size,
3981 struct ib_uverbs_ex_create_rwq_ind_table_resp,
3982 ind_tbl_num),
3983 UAPI_DEF_METHOD_NEEDS_FN(create_rwq_ind_table)),
3984 DECLARE_UVERBS_WRITE_EX(
3985 IB_USER_VERBS_EX_CMD_DESTROY_RWQ_IND_TBL,
3986 ib_uverbs_ex_destroy_rwq_ind_table,
3987 UAPI_DEF_WRITE_I(
3988 struct ib_uverbs_ex_destroy_rwq_ind_table),
3989 UAPI_DEF_METHOD_NEEDS_FN(destroy_rwq_ind_table))),
3990
3991 DECLARE_UVERBS_OBJECT(
3992 UVERBS_OBJECT_WQ,
3993 DECLARE_UVERBS_WRITE_EX(
3994 IB_USER_VERBS_EX_CMD_CREATE_WQ,
3995 ib_uverbs_ex_create_wq,
3996 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_create_wq,
3997 max_sge,
3998 struct ib_uverbs_ex_create_wq_resp,
3999 wqn),
4000 UAPI_DEF_METHOD_NEEDS_FN(create_wq)),
4001 DECLARE_UVERBS_WRITE_EX(
4002 IB_USER_VERBS_EX_CMD_DESTROY_WQ,
4003 ib_uverbs_ex_destroy_wq,
4004 UAPI_DEF_WRITE_IO_EX(struct ib_uverbs_ex_destroy_wq,
4005 wq_handle,
4006 struct ib_uverbs_ex_destroy_wq_resp,
4007 reserved),
4008 UAPI_DEF_METHOD_NEEDS_FN(destroy_wq)),
4009 DECLARE_UVERBS_WRITE_EX(
4010 IB_USER_VERBS_EX_CMD_MODIFY_WQ,
4011 ib_uverbs_ex_modify_wq,
4012 UAPI_DEF_WRITE_I_EX(struct ib_uverbs_ex_modify_wq,
4013 curr_wq_state),
4014 UAPI_DEF_METHOD_NEEDS_FN(modify_wq))),
4015
4016 DECLARE_UVERBS_OBJECT(
4017 UVERBS_OBJECT_SRQ,
4018 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_SRQ,
4019 ib_uverbs_create_srq,
4020 UAPI_DEF_WRITE_UDATA_IO(
4021 struct ib_uverbs_create_srq,
4022 struct ib_uverbs_create_srq_resp),
4023 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4024 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_CREATE_XSRQ,
4025 ib_uverbs_create_xsrq,
4026 UAPI_DEF_WRITE_UDATA_IO(
4027 struct ib_uverbs_create_xsrq,
4028 struct ib_uverbs_create_srq_resp),
4029 UAPI_DEF_METHOD_NEEDS_FN(create_srq)),
4030 DECLARE_UVERBS_WRITE(
4031 IB_USER_VERBS_CMD_DESTROY_SRQ,
4032 ib_uverbs_destroy_srq,
4033 UAPI_DEF_WRITE_IO(struct ib_uverbs_destroy_srq,
4034 struct ib_uverbs_destroy_srq_resp),
4035 UAPI_DEF_METHOD_NEEDS_FN(destroy_srq)),
4036 DECLARE_UVERBS_WRITE(
4037 IB_USER_VERBS_CMD_MODIFY_SRQ,
4038 ib_uverbs_modify_srq,
4039 UAPI_DEF_WRITE_UDATA_I(struct ib_uverbs_modify_srq),
4040 UAPI_DEF_METHOD_NEEDS_FN(modify_srq)),
4041 DECLARE_UVERBS_WRITE(
4042 IB_USER_VERBS_CMD_POST_SRQ_RECV,
4043 ib_uverbs_post_srq_recv,
4044 UAPI_DEF_WRITE_IO(struct ib_uverbs_post_srq_recv,
4045 struct ib_uverbs_post_srq_recv_resp),
4046 UAPI_DEF_METHOD_NEEDS_FN(post_srq_recv)),
4047 DECLARE_UVERBS_WRITE(
4048 IB_USER_VERBS_CMD_QUERY_SRQ,
4049 ib_uverbs_query_srq,
4050 UAPI_DEF_WRITE_IO(struct ib_uverbs_query_srq,
4051 struct ib_uverbs_query_srq_resp),
4052 UAPI_DEF_METHOD_NEEDS_FN(query_srq))),
4053
4054 DECLARE_UVERBS_OBJECT(
4055 UVERBS_OBJECT_XRCD,
4056 DECLARE_UVERBS_WRITE(
4057 IB_USER_VERBS_CMD_CLOSE_XRCD,
4058 ib_uverbs_close_xrcd,
4059 UAPI_DEF_WRITE_I(struct ib_uverbs_close_xrcd),
4060 UAPI_DEF_METHOD_NEEDS_FN(dealloc_xrcd)),
4061 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_QP,
4062 ib_uverbs_open_qp,
4063 UAPI_DEF_WRITE_UDATA_IO(
4064 struct ib_uverbs_open_qp,
4065 struct ib_uverbs_create_qp_resp)),
4066 DECLARE_UVERBS_WRITE(IB_USER_VERBS_CMD_OPEN_XRCD,
4067 ib_uverbs_open_xrcd,
4068 UAPI_DEF_WRITE_UDATA_IO(
4069 struct ib_uverbs_open_xrcd,
4070 struct ib_uverbs_open_xrcd_resp),
4071 UAPI_DEF_METHOD_NEEDS_FN(alloc_xrcd))),
4072
4073 {},
4074 };