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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
50static struct ib_uverbs_completion_event_file *
51ib_uverbs_lookup_comp_file(int fd, struct ib_ucontext *context)
52{
53 struct ib_uobject *uobj = uobj_get_read(UVERBS_OBJECT_COMP_CHANNEL,
54 fd, context);
55 struct ib_uobject_file *uobj_file;
56
57 if (IS_ERR(uobj))
58 return (void *)uobj;
59
60 uverbs_uobject_get(uobj);
61 uobj_put_read(uobj);
62
63 uobj_file = container_of(uobj, struct ib_uobject_file, uobj);
64 return container_of(uobj_file, struct ib_uverbs_completion_event_file,
65 uobj_file);
66}
67
68ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
69 struct ib_device *ib_dev,
70 const char __user *buf,
71 int in_len, int out_len)
72{
73 struct ib_uverbs_get_context cmd;
74 struct ib_uverbs_get_context_resp resp;
75 struct ib_udata udata;
76 struct ib_ucontext *ucontext;
77 struct file *filp;
78 struct ib_rdmacg_object cg_obj;
79 int ret;
80
81 if (out_len < sizeof resp)
82 return -ENOSPC;
83
84 if (copy_from_user(&cmd, buf, sizeof cmd))
85 return -EFAULT;
86
87 mutex_lock(&file->mutex);
88
89 if (file->ucontext) {
90 ret = -EINVAL;
91 goto err;
92 }
93
94 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
95 u64_to_user_ptr(cmd.response) + sizeof(resp),
96 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
97 out_len - sizeof(resp));
98
99 ret = ib_rdmacg_try_charge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
100 if (ret)
101 goto err;
102
103 ucontext = ib_dev->alloc_ucontext(ib_dev, &udata);
104 if (IS_ERR(ucontext)) {
105 ret = PTR_ERR(ucontext);
106 goto err_alloc;
107 }
108
109 ucontext->device = ib_dev;
110 ucontext->cg_obj = cg_obj;
111
112 ucontext->ufile = file;
113 uverbs_initialize_ucontext(ucontext);
114
115 rcu_read_lock();
116 ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID);
117 rcu_read_unlock();
118 ucontext->closing = 0;
119
120#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
121 ucontext->umem_tree = RB_ROOT_CACHED;
122 init_rwsem(&ucontext->umem_rwsem);
123 ucontext->odp_mrs_count = 0;
124 INIT_LIST_HEAD(&ucontext->no_private_counters);
125
126 if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING))
127 ucontext->invalidate_range = NULL;
128
129#endif
130
131 resp.num_comp_vectors = file->device->num_comp_vectors;
132
133 ret = get_unused_fd_flags(O_CLOEXEC);
134 if (ret < 0)
135 goto err_free;
136 resp.async_fd = ret;
137
138 filp = ib_uverbs_alloc_async_event_file(file, ib_dev);
139 if (IS_ERR(filp)) {
140 ret = PTR_ERR(filp);
141 goto err_fd;
142 }
143
144 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
145 ret = -EFAULT;
146 goto err_file;
147 }
148
149 file->ucontext = ucontext;
150
151 fd_install(resp.async_fd, filp);
152
153 mutex_unlock(&file->mutex);
154
155 return in_len;
156
157err_file:
158 ib_uverbs_free_async_event_file(file);
159 fput(filp);
160
161err_fd:
162 put_unused_fd(resp.async_fd);
163
164err_free:
165 put_pid(ucontext->tgid);
166 ib_dev->dealloc_ucontext(ucontext);
167
168err_alloc:
169 ib_rdmacg_uncharge(&cg_obj, ib_dev, RDMACG_RESOURCE_HCA_HANDLE);
170
171err:
172 mutex_unlock(&file->mutex);
173 return ret;
174}
175
176static void copy_query_dev_fields(struct ib_uverbs_file *file,
177 struct ib_device *ib_dev,
178 struct ib_uverbs_query_device_resp *resp,
179 struct ib_device_attr *attr)
180{
181 resp->fw_ver = attr->fw_ver;
182 resp->node_guid = ib_dev->node_guid;
183 resp->sys_image_guid = attr->sys_image_guid;
184 resp->max_mr_size = attr->max_mr_size;
185 resp->page_size_cap = attr->page_size_cap;
186 resp->vendor_id = attr->vendor_id;
187 resp->vendor_part_id = attr->vendor_part_id;
188 resp->hw_ver = attr->hw_ver;
189 resp->max_qp = attr->max_qp;
190 resp->max_qp_wr = attr->max_qp_wr;
191 resp->device_cap_flags = lower_32_bits(attr->device_cap_flags);
192 resp->max_sge = attr->max_sge;
193 resp->max_sge_rd = attr->max_sge_rd;
194 resp->max_cq = attr->max_cq;
195 resp->max_cqe = attr->max_cqe;
196 resp->max_mr = attr->max_mr;
197 resp->max_pd = attr->max_pd;
198 resp->max_qp_rd_atom = attr->max_qp_rd_atom;
199 resp->max_ee_rd_atom = attr->max_ee_rd_atom;
200 resp->max_res_rd_atom = attr->max_res_rd_atom;
201 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom;
202 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom;
203 resp->atomic_cap = attr->atomic_cap;
204 resp->max_ee = attr->max_ee;
205 resp->max_rdd = attr->max_rdd;
206 resp->max_mw = attr->max_mw;
207 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp;
208 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp;
209 resp->max_mcast_grp = attr->max_mcast_grp;
210 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
211 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
212 resp->max_ah = attr->max_ah;
213 resp->max_fmr = attr->max_fmr;
214 resp->max_map_per_fmr = attr->max_map_per_fmr;
215 resp->max_srq = attr->max_srq;
216 resp->max_srq_wr = attr->max_srq_wr;
217 resp->max_srq_sge = attr->max_srq_sge;
218 resp->max_pkeys = attr->max_pkeys;
219 resp->local_ca_ack_delay = attr->local_ca_ack_delay;
220 resp->phys_port_cnt = ib_dev->phys_port_cnt;
221}
222
223ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
224 struct ib_device *ib_dev,
225 const char __user *buf,
226 int in_len, int out_len)
227{
228 struct ib_uverbs_query_device cmd;
229 struct ib_uverbs_query_device_resp resp;
230
231 if (out_len < sizeof resp)
232 return -ENOSPC;
233
234 if (copy_from_user(&cmd, buf, sizeof cmd))
235 return -EFAULT;
236
237 memset(&resp, 0, sizeof resp);
238 copy_query_dev_fields(file, ib_dev, &resp, &ib_dev->attrs);
239
240 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
241 return -EFAULT;
242
243 return in_len;
244}
245
246ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file,
247 struct ib_device *ib_dev,
248 const char __user *buf,
249 int in_len, int out_len)
250{
251 struct ib_uverbs_query_port cmd;
252 struct ib_uverbs_query_port_resp resp;
253 struct ib_port_attr attr;
254 int ret;
255
256 if (out_len < sizeof resp)
257 return -ENOSPC;
258
259 if (copy_from_user(&cmd, buf, sizeof cmd))
260 return -EFAULT;
261
262 ret = ib_query_port(ib_dev, cmd.port_num, &attr);
263 if (ret)
264 return ret;
265
266 memset(&resp, 0, sizeof resp);
267
268 resp.state = attr.state;
269 resp.max_mtu = attr.max_mtu;
270 resp.active_mtu = attr.active_mtu;
271 resp.gid_tbl_len = attr.gid_tbl_len;
272 resp.port_cap_flags = attr.port_cap_flags;
273 resp.max_msg_sz = attr.max_msg_sz;
274 resp.bad_pkey_cntr = attr.bad_pkey_cntr;
275 resp.qkey_viol_cntr = attr.qkey_viol_cntr;
276 resp.pkey_tbl_len = attr.pkey_tbl_len;
277
278 if (rdma_cap_opa_ah(ib_dev, cmd.port_num)) {
279 resp.lid = OPA_TO_IB_UCAST_LID(attr.lid);
280 resp.sm_lid = OPA_TO_IB_UCAST_LID(attr.sm_lid);
281 } else {
282 resp.lid = ib_lid_cpu16(attr.lid);
283 resp.sm_lid = ib_lid_cpu16(attr.sm_lid);
284 }
285 resp.lmc = attr.lmc;
286 resp.max_vl_num = attr.max_vl_num;
287 resp.sm_sl = attr.sm_sl;
288 resp.subnet_timeout = attr.subnet_timeout;
289 resp.init_type_reply = attr.init_type_reply;
290 resp.active_width = attr.active_width;
291 resp.active_speed = attr.active_speed;
292 resp.phys_state = attr.phys_state;
293 resp.link_layer = rdma_port_get_link_layer(ib_dev,
294 cmd.port_num);
295
296 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
297 return -EFAULT;
298
299 return in_len;
300}
301
302ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
303 struct ib_device *ib_dev,
304 const char __user *buf,
305 int in_len, int out_len)
306{
307 struct ib_uverbs_alloc_pd cmd;
308 struct ib_uverbs_alloc_pd_resp resp;
309 struct ib_udata udata;
310 struct ib_uobject *uobj;
311 struct ib_pd *pd;
312 int ret;
313
314 if (out_len < sizeof resp)
315 return -ENOSPC;
316
317 if (copy_from_user(&cmd, buf, sizeof cmd))
318 return -EFAULT;
319
320 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
321 u64_to_user_ptr(cmd.response) + sizeof(resp),
322 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
323 out_len - sizeof(resp));
324
325 uobj = uobj_alloc(UVERBS_OBJECT_PD, file->ucontext);
326 if (IS_ERR(uobj))
327 return PTR_ERR(uobj);
328
329 pd = ib_dev->alloc_pd(ib_dev, file->ucontext, &udata);
330 if (IS_ERR(pd)) {
331 ret = PTR_ERR(pd);
332 goto err;
333 }
334
335 pd->device = ib_dev;
336 pd->uobject = uobj;
337 pd->__internal_mr = NULL;
338 atomic_set(&pd->usecnt, 0);
339
340 uobj->object = pd;
341 memset(&resp, 0, sizeof resp);
342 resp.pd_handle = uobj->id;
343 pd->res.type = RDMA_RESTRACK_PD;
344 rdma_restrack_add(&pd->res);
345
346 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
347 ret = -EFAULT;
348 goto err_copy;
349 }
350
351 uobj_alloc_commit(uobj);
352
353 return in_len;
354
355err_copy:
356 ib_dealloc_pd(pd);
357
358err:
359 uobj_alloc_abort(uobj);
360 return ret;
361}
362
363ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
364 struct ib_device *ib_dev,
365 const char __user *buf,
366 int in_len, int out_len)
367{
368 struct ib_uverbs_dealloc_pd cmd;
369 struct ib_uobject *uobj;
370 int ret;
371
372 if (copy_from_user(&cmd, buf, sizeof cmd))
373 return -EFAULT;
374
375 uobj = uobj_get_write(UVERBS_OBJECT_PD, cmd.pd_handle,
376 file->ucontext);
377 if (IS_ERR(uobj))
378 return PTR_ERR(uobj);
379
380 ret = uobj_remove_commit(uobj);
381
382 return ret ?: in_len;
383}
384
385struct xrcd_table_entry {
386 struct rb_node node;
387 struct ib_xrcd *xrcd;
388 struct inode *inode;
389};
390
391static int xrcd_table_insert(struct ib_uverbs_device *dev,
392 struct inode *inode,
393 struct ib_xrcd *xrcd)
394{
395 struct xrcd_table_entry *entry, *scan;
396 struct rb_node **p = &dev->xrcd_tree.rb_node;
397 struct rb_node *parent = NULL;
398
399 entry = kmalloc(sizeof *entry, GFP_KERNEL);
400 if (!entry)
401 return -ENOMEM;
402
403 entry->xrcd = xrcd;
404 entry->inode = inode;
405
406 while (*p) {
407 parent = *p;
408 scan = rb_entry(parent, struct xrcd_table_entry, node);
409
410 if (inode < scan->inode) {
411 p = &(*p)->rb_left;
412 } else if (inode > scan->inode) {
413 p = &(*p)->rb_right;
414 } else {
415 kfree(entry);
416 return -EEXIST;
417 }
418 }
419
420 rb_link_node(&entry->node, parent, p);
421 rb_insert_color(&entry->node, &dev->xrcd_tree);
422 igrab(inode);
423 return 0;
424}
425
426static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
427 struct inode *inode)
428{
429 struct xrcd_table_entry *entry;
430 struct rb_node *p = dev->xrcd_tree.rb_node;
431
432 while (p) {
433 entry = rb_entry(p, struct xrcd_table_entry, node);
434
435 if (inode < entry->inode)
436 p = p->rb_left;
437 else if (inode > entry->inode)
438 p = p->rb_right;
439 else
440 return entry;
441 }
442
443 return NULL;
444}
445
446static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
447{
448 struct xrcd_table_entry *entry;
449
450 entry = xrcd_table_search(dev, inode);
451 if (!entry)
452 return NULL;
453
454 return entry->xrcd;
455}
456
457static void xrcd_table_delete(struct ib_uverbs_device *dev,
458 struct inode *inode)
459{
460 struct xrcd_table_entry *entry;
461
462 entry = xrcd_table_search(dev, inode);
463 if (entry) {
464 iput(inode);
465 rb_erase(&entry->node, &dev->xrcd_tree);
466 kfree(entry);
467 }
468}
469
470ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file,
471 struct ib_device *ib_dev,
472 const char __user *buf, int in_len,
473 int out_len)
474{
475 struct ib_uverbs_open_xrcd cmd;
476 struct ib_uverbs_open_xrcd_resp resp;
477 struct ib_udata udata;
478 struct ib_uxrcd_object *obj;
479 struct ib_xrcd *xrcd = NULL;
480 struct fd f = {NULL, 0};
481 struct inode *inode = NULL;
482 int ret = 0;
483 int new_xrcd = 0;
484
485 if (out_len < sizeof resp)
486 return -ENOSPC;
487
488 if (copy_from_user(&cmd, buf, sizeof cmd))
489 return -EFAULT;
490
491 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
492 u64_to_user_ptr(cmd.response) + sizeof(resp),
493 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
494 out_len - sizeof(resp));
495
496 mutex_lock(&file->device->xrcd_tree_mutex);
497
498 if (cmd.fd != -1) {
499
500 f = fdget(cmd.fd);
501 if (!f.file) {
502 ret = -EBADF;
503 goto err_tree_mutex_unlock;
504 }
505
506 inode = file_inode(f.file);
507 xrcd = find_xrcd(file->device, inode);
508 if (!xrcd && !(cmd.oflags & O_CREAT)) {
509
510 ret = -EAGAIN;
511 goto err_tree_mutex_unlock;
512 }
513
514 if (xrcd && cmd.oflags & O_EXCL) {
515 ret = -EINVAL;
516 goto err_tree_mutex_unlock;
517 }
518 }
519
520 obj = (struct ib_uxrcd_object *)uobj_alloc(UVERBS_OBJECT_XRCD,
521 file->ucontext);
522 if (IS_ERR(obj)) {
523 ret = PTR_ERR(obj);
524 goto err_tree_mutex_unlock;
525 }
526
527 if (!xrcd) {
528 xrcd = ib_dev->alloc_xrcd(ib_dev, file->ucontext, &udata);
529 if (IS_ERR(xrcd)) {
530 ret = PTR_ERR(xrcd);
531 goto err;
532 }
533
534 xrcd->inode = inode;
535 xrcd->device = ib_dev;
536 atomic_set(&xrcd->usecnt, 0);
537 mutex_init(&xrcd->tgt_qp_mutex);
538 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
539 new_xrcd = 1;
540 }
541
542 atomic_set(&obj->refcnt, 0);
543 obj->uobject.object = xrcd;
544 memset(&resp, 0, sizeof resp);
545 resp.xrcd_handle = obj->uobject.id;
546
547 if (inode) {
548 if (new_xrcd) {
549
550 ret = xrcd_table_insert(file->device, inode, xrcd);
551 if (ret)
552 goto err_dealloc_xrcd;
553 }
554 atomic_inc(&xrcd->usecnt);
555 }
556
557 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
558 ret = -EFAULT;
559 goto err_copy;
560 }
561
562 if (f.file)
563 fdput(f);
564
565 mutex_unlock(&file->device->xrcd_tree_mutex);
566
567 uobj_alloc_commit(&obj->uobject);
568
569 return in_len;
570
571err_copy:
572 if (inode) {
573 if (new_xrcd)
574 xrcd_table_delete(file->device, inode);
575 atomic_dec(&xrcd->usecnt);
576 }
577
578err_dealloc_xrcd:
579 ib_dealloc_xrcd(xrcd);
580
581err:
582 uobj_alloc_abort(&obj->uobject);
583
584err_tree_mutex_unlock:
585 if (f.file)
586 fdput(f);
587
588 mutex_unlock(&file->device->xrcd_tree_mutex);
589
590 return ret;
591}
592
593ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file,
594 struct ib_device *ib_dev,
595 const char __user *buf, int in_len,
596 int out_len)
597{
598 struct ib_uverbs_close_xrcd cmd;
599 struct ib_uobject *uobj;
600 int ret = 0;
601
602 if (copy_from_user(&cmd, buf, sizeof cmd))
603 return -EFAULT;
604
605 uobj = uobj_get_write(UVERBS_OBJECT_XRCD, cmd.xrcd_handle,
606 file->ucontext);
607 if (IS_ERR(uobj))
608 return PTR_ERR(uobj);
609
610 ret = uobj_remove_commit(uobj);
611 return ret ?: in_len;
612}
613
614int ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev,
615 struct ib_xrcd *xrcd,
616 enum rdma_remove_reason why)
617{
618 struct inode *inode;
619 int ret;
620
621 inode = xrcd->inode;
622 if (inode && !atomic_dec_and_test(&xrcd->usecnt))
623 return 0;
624
625 ret = ib_dealloc_xrcd(xrcd);
626
627 if (why == RDMA_REMOVE_DESTROY && ret)
628 atomic_inc(&xrcd->usecnt);
629 else if (inode)
630 xrcd_table_delete(dev, inode);
631
632 return ret;
633}
634
635ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
636 struct ib_device *ib_dev,
637 const char __user *buf, int in_len,
638 int out_len)
639{
640 struct ib_uverbs_reg_mr cmd;
641 struct ib_uverbs_reg_mr_resp resp;
642 struct ib_udata udata;
643 struct ib_uobject *uobj;
644 struct ib_pd *pd;
645 struct ib_mr *mr;
646 int ret;
647
648 if (out_len < sizeof resp)
649 return -ENOSPC;
650
651 if (copy_from_user(&cmd, buf, sizeof cmd))
652 return -EFAULT;
653
654 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
655 u64_to_user_ptr(cmd.response) + sizeof(resp),
656 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
657 out_len - sizeof(resp));
658
659 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
660 return -EINVAL;
661
662 ret = ib_check_mr_access(cmd.access_flags);
663 if (ret)
664 return ret;
665
666 uobj = uobj_alloc(UVERBS_OBJECT_MR, file->ucontext);
667 if (IS_ERR(uobj))
668 return PTR_ERR(uobj);
669
670 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, file->ucontext);
671 if (!pd) {
672 ret = -EINVAL;
673 goto err_free;
674 }
675
676 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) {
677 if (!(pd->device->attrs.device_cap_flags &
678 IB_DEVICE_ON_DEMAND_PAGING)) {
679 pr_debug("ODP support not available\n");
680 ret = -EINVAL;
681 goto err_put;
682 }
683 }
684
685 mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
686 cmd.access_flags, &udata);
687 if (IS_ERR(mr)) {
688 ret = PTR_ERR(mr);
689 goto err_put;
690 }
691
692 mr->device = pd->device;
693 mr->pd = pd;
694 mr->dm = NULL;
695 mr->uobject = uobj;
696 atomic_inc(&pd->usecnt);
697 mr->res.type = RDMA_RESTRACK_MR;
698 rdma_restrack_add(&mr->res);
699
700 uobj->object = mr;
701
702 memset(&resp, 0, sizeof resp);
703 resp.lkey = mr->lkey;
704 resp.rkey = mr->rkey;
705 resp.mr_handle = uobj->id;
706
707 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
708 ret = -EFAULT;
709 goto err_copy;
710 }
711
712 uobj_put_obj_read(pd);
713
714 uobj_alloc_commit(uobj);
715
716 return in_len;
717
718err_copy:
719 ib_dereg_mr(mr);
720
721err_put:
722 uobj_put_obj_read(pd);
723
724err_free:
725 uobj_alloc_abort(uobj);
726 return ret;
727}
728
729ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file,
730 struct ib_device *ib_dev,
731 const char __user *buf, int in_len,
732 int out_len)
733{
734 struct ib_uverbs_rereg_mr cmd;
735 struct ib_uverbs_rereg_mr_resp resp;
736 struct ib_udata udata;
737 struct ib_pd *pd = NULL;
738 struct ib_mr *mr;
739 struct ib_pd *old_pd;
740 int ret;
741 struct ib_uobject *uobj;
742
743 if (out_len < sizeof(resp))
744 return -ENOSPC;
745
746 if (copy_from_user(&cmd, buf, sizeof(cmd)))
747 return -EFAULT;
748
749 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
750 u64_to_user_ptr(cmd.response) + sizeof(resp),
751 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
752 out_len - sizeof(resp));
753
754 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags)
755 return -EINVAL;
756
757 if ((cmd.flags & IB_MR_REREG_TRANS) &&
758 (!cmd.start || !cmd.hca_va || 0 >= cmd.length ||
759 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)))
760 return -EINVAL;
761
762 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle,
763 file->ucontext);
764 if (IS_ERR(uobj))
765 return PTR_ERR(uobj);
766
767 mr = uobj->object;
768
769 if (mr->dm) {
770 ret = -EINVAL;
771 goto put_uobjs;
772 }
773
774 if (cmd.flags & IB_MR_REREG_ACCESS) {
775 ret = ib_check_mr_access(cmd.access_flags);
776 if (ret)
777 goto put_uobjs;
778 }
779
780 if (cmd.flags & IB_MR_REREG_PD) {
781 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, file->ucontext);
782 if (!pd) {
783 ret = -EINVAL;
784 goto put_uobjs;
785 }
786 }
787
788 old_pd = mr->pd;
789 ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start,
790 cmd.length, cmd.hca_va,
791 cmd.access_flags, pd, &udata);
792 if (!ret) {
793 if (cmd.flags & IB_MR_REREG_PD) {
794 atomic_inc(&pd->usecnt);
795 mr->pd = pd;
796 atomic_dec(&old_pd->usecnt);
797 }
798 } else {
799 goto put_uobj_pd;
800 }
801
802 memset(&resp, 0, sizeof(resp));
803 resp.lkey = mr->lkey;
804 resp.rkey = mr->rkey;
805
806 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp)))
807 ret = -EFAULT;
808 else
809 ret = in_len;
810
811put_uobj_pd:
812 if (cmd.flags & IB_MR_REREG_PD)
813 uobj_put_obj_read(pd);
814
815put_uobjs:
816 uobj_put_write(uobj);
817
818 return ret;
819}
820
821ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
822 struct ib_device *ib_dev,
823 const char __user *buf, int in_len,
824 int out_len)
825{
826 struct ib_uverbs_dereg_mr cmd;
827 struct ib_uobject *uobj;
828 int ret = -EINVAL;
829
830 if (copy_from_user(&cmd, buf, sizeof cmd))
831 return -EFAULT;
832
833 uobj = uobj_get_write(UVERBS_OBJECT_MR, cmd.mr_handle,
834 file->ucontext);
835 if (IS_ERR(uobj))
836 return PTR_ERR(uobj);
837
838 ret = uobj_remove_commit(uobj);
839
840 return ret ?: in_len;
841}
842
843ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file,
844 struct ib_device *ib_dev,
845 const char __user *buf, int in_len,
846 int out_len)
847{
848 struct ib_uverbs_alloc_mw cmd;
849 struct ib_uverbs_alloc_mw_resp resp;
850 struct ib_uobject *uobj;
851 struct ib_pd *pd;
852 struct ib_mw *mw;
853 struct ib_udata udata;
854 int ret;
855
856 if (out_len < sizeof(resp))
857 return -ENOSPC;
858
859 if (copy_from_user(&cmd, buf, sizeof(cmd)))
860 return -EFAULT;
861
862 uobj = uobj_alloc(UVERBS_OBJECT_MW, file->ucontext);
863 if (IS_ERR(uobj))
864 return PTR_ERR(uobj);
865
866 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, file->ucontext);
867 if (!pd) {
868 ret = -EINVAL;
869 goto err_free;
870 }
871
872 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
873 u64_to_user_ptr(cmd.response) + sizeof(resp),
874 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
875 out_len - sizeof(resp));
876
877 mw = pd->device->alloc_mw(pd, cmd.mw_type, &udata);
878 if (IS_ERR(mw)) {
879 ret = PTR_ERR(mw);
880 goto err_put;
881 }
882
883 mw->device = pd->device;
884 mw->pd = pd;
885 mw->uobject = uobj;
886 atomic_inc(&pd->usecnt);
887
888 uobj->object = mw;
889
890 memset(&resp, 0, sizeof(resp));
891 resp.rkey = mw->rkey;
892 resp.mw_handle = uobj->id;
893
894 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp))) {
895 ret = -EFAULT;
896 goto err_copy;
897 }
898
899 uobj_put_obj_read(pd);
900 uobj_alloc_commit(uobj);
901
902 return in_len;
903
904err_copy:
905 uverbs_dealloc_mw(mw);
906err_put:
907 uobj_put_obj_read(pd);
908err_free:
909 uobj_alloc_abort(uobj);
910 return ret;
911}
912
913ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file,
914 struct ib_device *ib_dev,
915 const char __user *buf, int in_len,
916 int out_len)
917{
918 struct ib_uverbs_dealloc_mw cmd;
919 struct ib_uobject *uobj;
920 int ret = -EINVAL;
921
922 if (copy_from_user(&cmd, buf, sizeof(cmd)))
923 return -EFAULT;
924
925 uobj = uobj_get_write(UVERBS_OBJECT_MW, cmd.mw_handle,
926 file->ucontext);
927 if (IS_ERR(uobj))
928 return PTR_ERR(uobj);
929
930 ret = uobj_remove_commit(uobj);
931 return ret ?: in_len;
932}
933
934ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
935 struct ib_device *ib_dev,
936 const char __user *buf, int in_len,
937 int out_len)
938{
939 struct ib_uverbs_create_comp_channel cmd;
940 struct ib_uverbs_create_comp_channel_resp resp;
941 struct ib_uobject *uobj;
942 struct ib_uverbs_completion_event_file *ev_file;
943
944 if (out_len < sizeof resp)
945 return -ENOSPC;
946
947 if (copy_from_user(&cmd, buf, sizeof cmd))
948 return -EFAULT;
949
950 uobj = uobj_alloc(UVERBS_OBJECT_COMP_CHANNEL, file->ucontext);
951 if (IS_ERR(uobj))
952 return PTR_ERR(uobj);
953
954 resp.fd = uobj->id;
955
956 ev_file = container_of(uobj, struct ib_uverbs_completion_event_file,
957 uobj_file.uobj);
958 ib_uverbs_init_event_queue(&ev_file->ev_queue);
959
960 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
961 uobj_alloc_abort(uobj);
962 return -EFAULT;
963 }
964
965 uobj_alloc_commit(uobj);
966 return in_len;
967}
968
969static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file,
970 struct ib_device *ib_dev,
971 struct ib_udata *ucore,
972 struct ib_udata *uhw,
973 struct ib_uverbs_ex_create_cq *cmd,
974 size_t cmd_sz,
975 int (*cb)(struct ib_uverbs_file *file,
976 struct ib_ucq_object *obj,
977 struct ib_uverbs_ex_create_cq_resp *resp,
978 struct ib_udata *udata,
979 void *context),
980 void *context)
981{
982 struct ib_ucq_object *obj;
983 struct ib_uverbs_completion_event_file *ev_file = NULL;
984 struct ib_cq *cq;
985 int ret;
986 struct ib_uverbs_ex_create_cq_resp resp;
987 struct ib_cq_init_attr attr = {};
988
989 if (!ib_dev->create_cq)
990 return ERR_PTR(-EOPNOTSUPP);
991
992 if (cmd->comp_vector >= file->device->num_comp_vectors)
993 return ERR_PTR(-EINVAL);
994
995 obj = (struct ib_ucq_object *)uobj_alloc(UVERBS_OBJECT_CQ,
996 file->ucontext);
997 if (IS_ERR(obj))
998 return obj;
999
1000 if (cmd->comp_channel >= 0) {
1001 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel,
1002 file->ucontext);
1003 if (IS_ERR(ev_file)) {
1004 ret = PTR_ERR(ev_file);
1005 goto err;
1006 }
1007 }
1008
1009 obj->uobject.user_handle = cmd->user_handle;
1010 obj->uverbs_file = file;
1011 obj->comp_events_reported = 0;
1012 obj->async_events_reported = 0;
1013 INIT_LIST_HEAD(&obj->comp_list);
1014 INIT_LIST_HEAD(&obj->async_list);
1015
1016 attr.cqe = cmd->cqe;
1017 attr.comp_vector = cmd->comp_vector;
1018
1019 if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags))
1020 attr.flags = cmd->flags;
1021
1022 cq = ib_dev->create_cq(ib_dev, &attr, file->ucontext, uhw);
1023 if (IS_ERR(cq)) {
1024 ret = PTR_ERR(cq);
1025 goto err_file;
1026 }
1027
1028 cq->device = ib_dev;
1029 cq->uobject = &obj->uobject;
1030 cq->comp_handler = ib_uverbs_comp_handler;
1031 cq->event_handler = ib_uverbs_cq_event_handler;
1032 cq->cq_context = ev_file ? &ev_file->ev_queue : NULL;
1033 atomic_set(&cq->usecnt, 0);
1034
1035 obj->uobject.object = cq;
1036 memset(&resp, 0, sizeof resp);
1037 resp.base.cq_handle = obj->uobject.id;
1038 resp.base.cqe = cq->cqe;
1039
1040 resp.response_length = offsetof(typeof(resp), response_length) +
1041 sizeof(resp.response_length);
1042
1043 cq->res.type = RDMA_RESTRACK_CQ;
1044 rdma_restrack_add(&cq->res);
1045
1046 ret = cb(file, obj, &resp, ucore, context);
1047 if (ret)
1048 goto err_cb;
1049
1050 uobj_alloc_commit(&obj->uobject);
1051 return obj;
1052
1053err_cb:
1054 ib_destroy_cq(cq);
1055
1056err_file:
1057 if (ev_file)
1058 ib_uverbs_release_ucq(file, ev_file, obj);
1059
1060err:
1061 uobj_alloc_abort(&obj->uobject);
1062
1063 return ERR_PTR(ret);
1064}
1065
1066static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file,
1067 struct ib_ucq_object *obj,
1068 struct ib_uverbs_ex_create_cq_resp *resp,
1069 struct ib_udata *ucore, void *context)
1070{
1071 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1072 return -EFAULT;
1073
1074 return 0;
1075}
1076
1077ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
1078 struct ib_device *ib_dev,
1079 const char __user *buf, int in_len,
1080 int out_len)
1081{
1082 struct ib_uverbs_create_cq cmd;
1083 struct ib_uverbs_ex_create_cq cmd_ex;
1084 struct ib_uverbs_create_cq_resp resp;
1085 struct ib_udata ucore;
1086 struct ib_udata uhw;
1087 struct ib_ucq_object *obj;
1088
1089 if (out_len < sizeof(resp))
1090 return -ENOSPC;
1091
1092 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1093 return -EFAULT;
1094
1095 ib_uverbs_init_udata(&ucore, buf, u64_to_user_ptr(cmd.response),
1096 sizeof(cmd), sizeof(resp));
1097
1098 ib_uverbs_init_udata(&uhw, buf + sizeof(cmd),
1099 u64_to_user_ptr(cmd.response) + sizeof(resp),
1100 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
1101 out_len - sizeof(resp));
1102
1103 memset(&cmd_ex, 0, sizeof(cmd_ex));
1104 cmd_ex.user_handle = cmd.user_handle;
1105 cmd_ex.cqe = cmd.cqe;
1106 cmd_ex.comp_vector = cmd.comp_vector;
1107 cmd_ex.comp_channel = cmd.comp_channel;
1108
1109 obj = create_cq(file, ib_dev, &ucore, &uhw, &cmd_ex,
1110 offsetof(typeof(cmd_ex), comp_channel) +
1111 sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb,
1112 NULL);
1113
1114 if (IS_ERR(obj))
1115 return PTR_ERR(obj);
1116
1117 return in_len;
1118}
1119
1120static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file,
1121 struct ib_ucq_object *obj,
1122 struct ib_uverbs_ex_create_cq_resp *resp,
1123 struct ib_udata *ucore, void *context)
1124{
1125 if (ib_copy_to_udata(ucore, resp, resp->response_length))
1126 return -EFAULT;
1127
1128 return 0;
1129}
1130
1131int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file,
1132 struct ib_device *ib_dev,
1133 struct ib_udata *ucore,
1134 struct ib_udata *uhw)
1135{
1136 struct ib_uverbs_ex_create_cq_resp resp;
1137 struct ib_uverbs_ex_create_cq cmd;
1138 struct ib_ucq_object *obj;
1139 int err;
1140
1141 if (ucore->inlen < sizeof(cmd))
1142 return -EINVAL;
1143
1144 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
1145 if (err)
1146 return err;
1147
1148 if (cmd.comp_mask)
1149 return -EINVAL;
1150
1151 if (cmd.reserved)
1152 return -EINVAL;
1153
1154 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
1155 sizeof(resp.response_length)))
1156 return -ENOSPC;
1157
1158 obj = create_cq(file, ib_dev, ucore, uhw, &cmd,
1159 min(ucore->inlen, sizeof(cmd)),
1160 ib_uverbs_ex_create_cq_cb, NULL);
1161
1162 return PTR_ERR_OR_ZERO(obj);
1163}
1164
1165ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
1166 struct ib_device *ib_dev,
1167 const char __user *buf, int in_len,
1168 int out_len)
1169{
1170 struct ib_uverbs_resize_cq cmd;
1171 struct ib_uverbs_resize_cq_resp resp = {};
1172 struct ib_udata udata;
1173 struct ib_cq *cq;
1174 int ret = -EINVAL;
1175
1176 if (copy_from_user(&cmd, buf, sizeof cmd))
1177 return -EFAULT;
1178
1179 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
1180 u64_to_user_ptr(cmd.response) + sizeof(resp),
1181 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
1182 out_len - sizeof(resp));
1183
1184 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, file->ucontext);
1185 if (!cq)
1186 return -EINVAL;
1187
1188 ret = cq->device->resize_cq(cq, cmd.cqe, &udata);
1189 if (ret)
1190 goto out;
1191
1192 resp.cqe = cq->cqe;
1193
1194 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp.cqe))
1195 ret = -EFAULT;
1196
1197out:
1198 uobj_put_obj_read(cq);
1199
1200 return ret ? ret : in_len;
1201}
1202
1203static int copy_wc_to_user(struct ib_device *ib_dev, void __user *dest,
1204 struct ib_wc *wc)
1205{
1206 struct ib_uverbs_wc tmp;
1207
1208 tmp.wr_id = wc->wr_id;
1209 tmp.status = wc->status;
1210 tmp.opcode = wc->opcode;
1211 tmp.vendor_err = wc->vendor_err;
1212 tmp.byte_len = wc->byte_len;
1213 tmp.ex.imm_data = wc->ex.imm_data;
1214 tmp.qp_num = wc->qp->qp_num;
1215 tmp.src_qp = wc->src_qp;
1216 tmp.wc_flags = wc->wc_flags;
1217 tmp.pkey_index = wc->pkey_index;
1218 if (rdma_cap_opa_ah(ib_dev, wc->port_num))
1219 tmp.slid = OPA_TO_IB_UCAST_LID(wc->slid);
1220 else
1221 tmp.slid = ib_lid_cpu16(wc->slid);
1222 tmp.sl = wc->sl;
1223 tmp.dlid_path_bits = wc->dlid_path_bits;
1224 tmp.port_num = wc->port_num;
1225 tmp.reserved = 0;
1226
1227 if (copy_to_user(dest, &tmp, sizeof tmp))
1228 return -EFAULT;
1229
1230 return 0;
1231}
1232
1233ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
1234 struct ib_device *ib_dev,
1235 const char __user *buf, int in_len,
1236 int out_len)
1237{
1238 struct ib_uverbs_poll_cq cmd;
1239 struct ib_uverbs_poll_cq_resp resp;
1240 u8 __user *header_ptr;
1241 u8 __user *data_ptr;
1242 struct ib_cq *cq;
1243 struct ib_wc wc;
1244 int ret;
1245
1246 if (copy_from_user(&cmd, buf, sizeof cmd))
1247 return -EFAULT;
1248
1249 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, file->ucontext);
1250 if (!cq)
1251 return -EINVAL;
1252
1253
1254 header_ptr = u64_to_user_ptr(cmd.response);
1255 data_ptr = header_ptr + sizeof resp;
1256
1257 memset(&resp, 0, sizeof resp);
1258 while (resp.count < cmd.ne) {
1259 ret = ib_poll_cq(cq, 1, &wc);
1260 if (ret < 0)
1261 goto out_put;
1262 if (!ret)
1263 break;
1264
1265 ret = copy_wc_to_user(ib_dev, data_ptr, &wc);
1266 if (ret)
1267 goto out_put;
1268
1269 data_ptr += sizeof(struct ib_uverbs_wc);
1270 ++resp.count;
1271 }
1272
1273 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1274 ret = -EFAULT;
1275 goto out_put;
1276 }
1277
1278 ret = in_len;
1279
1280out_put:
1281 uobj_put_obj_read(cq);
1282 return ret;
1283}
1284
1285ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
1286 struct ib_device *ib_dev,
1287 const char __user *buf, int in_len,
1288 int out_len)
1289{
1290 struct ib_uverbs_req_notify_cq cmd;
1291 struct ib_cq *cq;
1292
1293 if (copy_from_user(&cmd, buf, sizeof cmd))
1294 return -EFAULT;
1295
1296 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, file->ucontext);
1297 if (!cq)
1298 return -EINVAL;
1299
1300 ib_req_notify_cq(cq, cmd.solicited_only ?
1301 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1302
1303 uobj_put_obj_read(cq);
1304
1305 return in_len;
1306}
1307
1308ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
1309 struct ib_device *ib_dev,
1310 const char __user *buf, int in_len,
1311 int out_len)
1312{
1313 struct ib_uverbs_destroy_cq cmd;
1314 struct ib_uverbs_destroy_cq_resp resp;
1315 struct ib_uobject *uobj;
1316 struct ib_cq *cq;
1317 struct ib_ucq_object *obj;
1318 int ret = -EINVAL;
1319
1320 if (copy_from_user(&cmd, buf, sizeof cmd))
1321 return -EFAULT;
1322
1323 uobj = uobj_get_write(UVERBS_OBJECT_CQ, cmd.cq_handle,
1324 file->ucontext);
1325 if (IS_ERR(uobj))
1326 return PTR_ERR(uobj);
1327
1328
1329
1330
1331
1332 uverbs_uobject_get(uobj);
1333 cq = uobj->object;
1334 obj = container_of(cq->uobject, struct ib_ucq_object, uobject);
1335
1336 memset(&resp, 0, sizeof(resp));
1337
1338 ret = uobj_remove_commit(uobj);
1339 if (ret) {
1340 uverbs_uobject_put(uobj);
1341 return ret;
1342 }
1343
1344 resp.comp_events_reported = obj->comp_events_reported;
1345 resp.async_events_reported = obj->async_events_reported;
1346
1347 uverbs_uobject_put(uobj);
1348 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
1349 return -EFAULT;
1350
1351 return in_len;
1352}
1353
1354static int create_qp(struct ib_uverbs_file *file,
1355 struct ib_udata *ucore,
1356 struct ib_udata *uhw,
1357 struct ib_uverbs_ex_create_qp *cmd,
1358 size_t cmd_sz,
1359 int (*cb)(struct ib_uverbs_file *file,
1360 struct ib_uverbs_ex_create_qp_resp *resp,
1361 struct ib_udata *udata),
1362 void *context)
1363{
1364 struct ib_uqp_object *obj;
1365 struct ib_device *device;
1366 struct ib_pd *pd = NULL;
1367 struct ib_xrcd *xrcd = NULL;
1368 struct ib_uobject *xrcd_uobj = ERR_PTR(-ENOENT);
1369 struct ib_cq *scq = NULL, *rcq = NULL;
1370 struct ib_srq *srq = NULL;
1371 struct ib_qp *qp;
1372 char *buf;
1373 struct ib_qp_init_attr attr = {};
1374 struct ib_uverbs_ex_create_qp_resp resp;
1375 int ret;
1376 struct ib_rwq_ind_table *ind_tbl = NULL;
1377 bool has_sq = true;
1378
1379 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
1380 return -EPERM;
1381
1382 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP,
1383 file->ucontext);
1384 if (IS_ERR(obj))
1385 return PTR_ERR(obj);
1386 obj->uxrcd = NULL;
1387 obj->uevent.uobject.user_handle = cmd->user_handle;
1388 mutex_init(&obj->mcast_lock);
1389
1390 if (cmd_sz >= offsetof(typeof(*cmd), rwq_ind_tbl_handle) +
1391 sizeof(cmd->rwq_ind_tbl_handle) &&
1392 (cmd->comp_mask & IB_UVERBS_CREATE_QP_MASK_IND_TABLE)) {
1393 ind_tbl = uobj_get_obj_read(rwq_ind_table, UVERBS_OBJECT_RWQ_IND_TBL,
1394 cmd->rwq_ind_tbl_handle,
1395 file->ucontext);
1396 if (!ind_tbl) {
1397 ret = -EINVAL;
1398 goto err_put;
1399 }
1400
1401 attr.rwq_ind_tbl = ind_tbl;
1402 }
1403
1404 if (cmd_sz > sizeof(*cmd) &&
1405 !ib_is_udata_cleared(ucore, sizeof(*cmd),
1406 cmd_sz - sizeof(*cmd))) {
1407 ret = -EOPNOTSUPP;
1408 goto err_put;
1409 }
1410
1411 if (ind_tbl && (cmd->max_recv_wr || cmd->max_recv_sge || cmd->is_srq)) {
1412 ret = -EINVAL;
1413 goto err_put;
1414 }
1415
1416 if (ind_tbl && !cmd->max_send_wr)
1417 has_sq = false;
1418
1419 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1420 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->pd_handle,
1421 file->ucontext);
1422
1423 if (IS_ERR(xrcd_uobj)) {
1424 ret = -EINVAL;
1425 goto err_put;
1426 }
1427
1428 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1429 if (!xrcd) {
1430 ret = -EINVAL;
1431 goto err_put;
1432 }
1433 device = xrcd->device;
1434 } else {
1435 if (cmd->qp_type == IB_QPT_XRC_INI) {
1436 cmd->max_recv_wr = 0;
1437 cmd->max_recv_sge = 0;
1438 } else {
1439 if (cmd->is_srq) {
1440 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd->srq_handle,
1441 file->ucontext);
1442 if (!srq || srq->srq_type == IB_SRQT_XRC) {
1443 ret = -EINVAL;
1444 goto err_put;
1445 }
1446 }
1447
1448 if (!ind_tbl) {
1449 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1450 rcq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd->recv_cq_handle,
1451 file->ucontext);
1452 if (!rcq) {
1453 ret = -EINVAL;
1454 goto err_put;
1455 }
1456 }
1457 }
1458 }
1459
1460 if (has_sq)
1461 scq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd->send_cq_handle,
1462 file->ucontext);
1463 if (!ind_tbl)
1464 rcq = rcq ?: scq;
1465 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, file->ucontext);
1466 if (!pd || (!scq && has_sq)) {
1467 ret = -EINVAL;
1468 goto err_put;
1469 }
1470
1471 device = pd->device;
1472 }
1473
1474 attr.event_handler = ib_uverbs_qp_event_handler;
1475 attr.qp_context = file;
1476 attr.send_cq = scq;
1477 attr.recv_cq = rcq;
1478 attr.srq = srq;
1479 attr.xrcd = xrcd;
1480 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1481 IB_SIGNAL_REQ_WR;
1482 attr.qp_type = cmd->qp_type;
1483 attr.create_flags = 0;
1484
1485 attr.cap.max_send_wr = cmd->max_send_wr;
1486 attr.cap.max_recv_wr = cmd->max_recv_wr;
1487 attr.cap.max_send_sge = cmd->max_send_sge;
1488 attr.cap.max_recv_sge = cmd->max_recv_sge;
1489 attr.cap.max_inline_data = cmd->max_inline_data;
1490
1491 obj->uevent.events_reported = 0;
1492 INIT_LIST_HEAD(&obj->uevent.event_list);
1493 INIT_LIST_HEAD(&obj->mcast_list);
1494
1495 if (cmd_sz >= offsetof(typeof(*cmd), create_flags) +
1496 sizeof(cmd->create_flags))
1497 attr.create_flags = cmd->create_flags;
1498
1499 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1500 IB_QP_CREATE_CROSS_CHANNEL |
1501 IB_QP_CREATE_MANAGED_SEND |
1502 IB_QP_CREATE_MANAGED_RECV |
1503 IB_QP_CREATE_SCATTER_FCS |
1504 IB_QP_CREATE_CVLAN_STRIPPING |
1505 IB_QP_CREATE_SOURCE_QPN |
1506 IB_QP_CREATE_PCI_WRITE_END_PADDING)) {
1507 ret = -EINVAL;
1508 goto err_put;
1509 }
1510
1511 if (attr.create_flags & IB_QP_CREATE_SOURCE_QPN) {
1512 if (!capable(CAP_NET_RAW)) {
1513 ret = -EPERM;
1514 goto err_put;
1515 }
1516
1517 attr.source_qpn = cmd->source_qpn;
1518 }
1519
1520 buf = (void *)cmd + sizeof(*cmd);
1521 if (cmd_sz > sizeof(*cmd))
1522 if (!(buf[0] == 0 && !memcmp(buf, buf + 1,
1523 cmd_sz - sizeof(*cmd) - 1))) {
1524 ret = -EINVAL;
1525 goto err_put;
1526 }
1527
1528 if (cmd->qp_type == IB_QPT_XRC_TGT)
1529 qp = ib_create_qp(pd, &attr);
1530 else
1531 qp = _ib_create_qp(device, pd, &attr, uhw,
1532 &obj->uevent.uobject);
1533
1534 if (IS_ERR(qp)) {
1535 ret = PTR_ERR(qp);
1536 goto err_put;
1537 }
1538
1539 if (cmd->qp_type != IB_QPT_XRC_TGT) {
1540 ret = ib_create_qp_security(qp, device);
1541 if (ret)
1542 goto err_cb;
1543
1544 qp->real_qp = qp;
1545 qp->pd = pd;
1546 qp->send_cq = attr.send_cq;
1547 qp->recv_cq = attr.recv_cq;
1548 qp->srq = attr.srq;
1549 qp->rwq_ind_tbl = ind_tbl;
1550 qp->event_handler = attr.event_handler;
1551 qp->qp_context = attr.qp_context;
1552 qp->qp_type = attr.qp_type;
1553 atomic_set(&qp->usecnt, 0);
1554 atomic_inc(&pd->usecnt);
1555 qp->port = 0;
1556 if (attr.send_cq)
1557 atomic_inc(&attr.send_cq->usecnt);
1558 if (attr.recv_cq)
1559 atomic_inc(&attr.recv_cq->usecnt);
1560 if (attr.srq)
1561 atomic_inc(&attr.srq->usecnt);
1562 if (ind_tbl)
1563 atomic_inc(&ind_tbl->usecnt);
1564 } else {
1565
1566 qp->uobject = &obj->uevent.uobject;
1567 }
1568
1569 obj->uevent.uobject.object = qp;
1570
1571 memset(&resp, 0, sizeof resp);
1572 resp.base.qpn = qp->qp_num;
1573 resp.base.qp_handle = obj->uevent.uobject.id;
1574 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1575 resp.base.max_send_sge = attr.cap.max_send_sge;
1576 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1577 resp.base.max_send_wr = attr.cap.max_send_wr;
1578 resp.base.max_inline_data = attr.cap.max_inline_data;
1579
1580 resp.response_length = offsetof(typeof(resp), response_length) +
1581 sizeof(resp.response_length);
1582
1583 ret = cb(file, &resp, ucore);
1584 if (ret)
1585 goto err_cb;
1586
1587 if (xrcd) {
1588 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1589 uobject);
1590 atomic_inc(&obj->uxrcd->refcnt);
1591 uobj_put_read(xrcd_uobj);
1592 }
1593
1594 if (pd)
1595 uobj_put_obj_read(pd);
1596 if (scq)
1597 uobj_put_obj_read(scq);
1598 if (rcq && rcq != scq)
1599 uobj_put_obj_read(rcq);
1600 if (srq)
1601 uobj_put_obj_read(srq);
1602 if (ind_tbl)
1603 uobj_put_obj_read(ind_tbl);
1604
1605 uobj_alloc_commit(&obj->uevent.uobject);
1606
1607 return 0;
1608err_cb:
1609 ib_destroy_qp(qp);
1610
1611err_put:
1612 if (!IS_ERR(xrcd_uobj))
1613 uobj_put_read(xrcd_uobj);
1614 if (pd)
1615 uobj_put_obj_read(pd);
1616 if (scq)
1617 uobj_put_obj_read(scq);
1618 if (rcq && rcq != scq)
1619 uobj_put_obj_read(rcq);
1620 if (srq)
1621 uobj_put_obj_read(srq);
1622 if (ind_tbl)
1623 uobj_put_obj_read(ind_tbl);
1624
1625 uobj_alloc_abort(&obj->uevent.uobject);
1626 return ret;
1627}
1628
1629static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file,
1630 struct ib_uverbs_ex_create_qp_resp *resp,
1631 struct ib_udata *ucore)
1632{
1633 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1634 return -EFAULT;
1635
1636 return 0;
1637}
1638
1639ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
1640 struct ib_device *ib_dev,
1641 const char __user *buf, int in_len,
1642 int out_len)
1643{
1644 struct ib_uverbs_create_qp cmd;
1645 struct ib_uverbs_ex_create_qp cmd_ex;
1646 struct ib_udata ucore;
1647 struct ib_udata uhw;
1648 ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp);
1649 int err;
1650
1651 if (out_len < resp_size)
1652 return -ENOSPC;
1653
1654 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1655 return -EFAULT;
1656
1657 ib_uverbs_init_udata(&ucore, buf, u64_to_user_ptr(cmd.response),
1658 sizeof(cmd), resp_size);
1659 ib_uverbs_init_udata(&uhw, buf + sizeof(cmd),
1660 u64_to_user_ptr(cmd.response) + resp_size,
1661 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
1662 out_len - resp_size);
1663
1664 memset(&cmd_ex, 0, sizeof(cmd_ex));
1665 cmd_ex.user_handle = cmd.user_handle;
1666 cmd_ex.pd_handle = cmd.pd_handle;
1667 cmd_ex.send_cq_handle = cmd.send_cq_handle;
1668 cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1669 cmd_ex.srq_handle = cmd.srq_handle;
1670 cmd_ex.max_send_wr = cmd.max_send_wr;
1671 cmd_ex.max_recv_wr = cmd.max_recv_wr;
1672 cmd_ex.max_send_sge = cmd.max_send_sge;
1673 cmd_ex.max_recv_sge = cmd.max_recv_sge;
1674 cmd_ex.max_inline_data = cmd.max_inline_data;
1675 cmd_ex.sq_sig_all = cmd.sq_sig_all;
1676 cmd_ex.qp_type = cmd.qp_type;
1677 cmd_ex.is_srq = cmd.is_srq;
1678
1679 err = create_qp(file, &ucore, &uhw, &cmd_ex,
1680 offsetof(typeof(cmd_ex), is_srq) +
1681 sizeof(cmd.is_srq), ib_uverbs_create_qp_cb,
1682 NULL);
1683
1684 if (err)
1685 return err;
1686
1687 return in_len;
1688}
1689
1690static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file,
1691 struct ib_uverbs_ex_create_qp_resp *resp,
1692 struct ib_udata *ucore)
1693{
1694 if (ib_copy_to_udata(ucore, resp, resp->response_length))
1695 return -EFAULT;
1696
1697 return 0;
1698}
1699
1700int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file,
1701 struct ib_device *ib_dev,
1702 struct ib_udata *ucore,
1703 struct ib_udata *uhw)
1704{
1705 struct ib_uverbs_ex_create_qp_resp resp;
1706 struct ib_uverbs_ex_create_qp cmd = {0};
1707 int err;
1708
1709 if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) +
1710 sizeof(cmd.comp_mask)))
1711 return -EINVAL;
1712
1713 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
1714 if (err)
1715 return err;
1716
1717 if (cmd.comp_mask & ~IB_UVERBS_CREATE_QP_SUP_COMP_MASK)
1718 return -EINVAL;
1719
1720 if (cmd.reserved)
1721 return -EINVAL;
1722
1723 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
1724 sizeof(resp.response_length)))
1725 return -ENOSPC;
1726
1727 err = create_qp(file, ucore, uhw, &cmd,
1728 min(ucore->inlen, sizeof(cmd)),
1729 ib_uverbs_ex_create_qp_cb, NULL);
1730
1731 if (err)
1732 return err;
1733
1734 return 0;
1735}
1736
1737ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file,
1738 struct ib_device *ib_dev,
1739 const char __user *buf, int in_len, int out_len)
1740{
1741 struct ib_uverbs_open_qp cmd;
1742 struct ib_uverbs_create_qp_resp resp;
1743 struct ib_udata udata;
1744 struct ib_uqp_object *obj;
1745 struct ib_xrcd *xrcd;
1746 struct ib_uobject *uninitialized_var(xrcd_uobj);
1747 struct ib_qp *qp;
1748 struct ib_qp_open_attr attr;
1749 int ret;
1750
1751 if (out_len < sizeof resp)
1752 return -ENOSPC;
1753
1754 if (copy_from_user(&cmd, buf, sizeof cmd))
1755 return -EFAULT;
1756
1757 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
1758 u64_to_user_ptr(cmd.response) + sizeof(resp),
1759 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
1760 out_len - sizeof(resp));
1761
1762 obj = (struct ib_uqp_object *)uobj_alloc(UVERBS_OBJECT_QP,
1763 file->ucontext);
1764 if (IS_ERR(obj))
1765 return PTR_ERR(obj);
1766
1767 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd.pd_handle,
1768 file->ucontext);
1769 if (IS_ERR(xrcd_uobj)) {
1770 ret = -EINVAL;
1771 goto err_put;
1772 }
1773
1774 xrcd = (struct ib_xrcd *)xrcd_uobj->object;
1775 if (!xrcd) {
1776 ret = -EINVAL;
1777 goto err_xrcd;
1778 }
1779
1780 attr.event_handler = ib_uverbs_qp_event_handler;
1781 attr.qp_context = file;
1782 attr.qp_num = cmd.qpn;
1783 attr.qp_type = cmd.qp_type;
1784
1785 obj->uevent.events_reported = 0;
1786 INIT_LIST_HEAD(&obj->uevent.event_list);
1787 INIT_LIST_HEAD(&obj->mcast_list);
1788
1789 qp = ib_open_qp(xrcd, &attr);
1790 if (IS_ERR(qp)) {
1791 ret = PTR_ERR(qp);
1792 goto err_xrcd;
1793 }
1794
1795 obj->uevent.uobject.object = qp;
1796 obj->uevent.uobject.user_handle = cmd.user_handle;
1797
1798 memset(&resp, 0, sizeof resp);
1799 resp.qpn = qp->qp_num;
1800 resp.qp_handle = obj->uevent.uobject.id;
1801
1802 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
1803 ret = -EFAULT;
1804 goto err_destroy;
1805 }
1806
1807 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1808 atomic_inc(&obj->uxrcd->refcnt);
1809 qp->uobject = &obj->uevent.uobject;
1810 uobj_put_read(xrcd_uobj);
1811
1812
1813 uobj_alloc_commit(&obj->uevent.uobject);
1814
1815 return in_len;
1816
1817err_destroy:
1818 ib_destroy_qp(qp);
1819err_xrcd:
1820 uobj_put_read(xrcd_uobj);
1821err_put:
1822 uobj_alloc_abort(&obj->uevent.uobject);
1823 return ret;
1824}
1825
1826static void copy_ah_attr_to_uverbs(struct ib_uverbs_qp_dest *uverb_attr,
1827 struct rdma_ah_attr *rdma_attr)
1828{
1829 const struct ib_global_route *grh;
1830
1831 uverb_attr->dlid = rdma_ah_get_dlid(rdma_attr);
1832 uverb_attr->sl = rdma_ah_get_sl(rdma_attr);
1833 uverb_attr->src_path_bits = rdma_ah_get_path_bits(rdma_attr);
1834 uverb_attr->static_rate = rdma_ah_get_static_rate(rdma_attr);
1835 uverb_attr->is_global = !!(rdma_ah_get_ah_flags(rdma_attr) &
1836 IB_AH_GRH);
1837 if (uverb_attr->is_global) {
1838 grh = rdma_ah_read_grh(rdma_attr);
1839 memcpy(uverb_attr->dgid, grh->dgid.raw, 16);
1840 uverb_attr->flow_label = grh->flow_label;
1841 uverb_attr->sgid_index = grh->sgid_index;
1842 uverb_attr->hop_limit = grh->hop_limit;
1843 uverb_attr->traffic_class = grh->traffic_class;
1844 }
1845 uverb_attr->port_num = rdma_ah_get_port_num(rdma_attr);
1846}
1847
1848ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
1849 struct ib_device *ib_dev,
1850 const char __user *buf, int in_len,
1851 int out_len)
1852{
1853 struct ib_uverbs_query_qp cmd;
1854 struct ib_uverbs_query_qp_resp resp;
1855 struct ib_qp *qp;
1856 struct ib_qp_attr *attr;
1857 struct ib_qp_init_attr *init_attr;
1858 int ret;
1859
1860 if (copy_from_user(&cmd, buf, sizeof cmd))
1861 return -EFAULT;
1862
1863 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1864 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
1865 if (!attr || !init_attr) {
1866 ret = -ENOMEM;
1867 goto out;
1868 }
1869
1870 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, file->ucontext);
1871 if (!qp) {
1872 ret = -EINVAL;
1873 goto out;
1874 }
1875
1876 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
1877
1878 uobj_put_obj_read(qp);
1879
1880 if (ret)
1881 goto out;
1882
1883 memset(&resp, 0, sizeof resp);
1884
1885 resp.qp_state = attr->qp_state;
1886 resp.cur_qp_state = attr->cur_qp_state;
1887 resp.path_mtu = attr->path_mtu;
1888 resp.path_mig_state = attr->path_mig_state;
1889 resp.qkey = attr->qkey;
1890 resp.rq_psn = attr->rq_psn;
1891 resp.sq_psn = attr->sq_psn;
1892 resp.dest_qp_num = attr->dest_qp_num;
1893 resp.qp_access_flags = attr->qp_access_flags;
1894 resp.pkey_index = attr->pkey_index;
1895 resp.alt_pkey_index = attr->alt_pkey_index;
1896 resp.sq_draining = attr->sq_draining;
1897 resp.max_rd_atomic = attr->max_rd_atomic;
1898 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
1899 resp.min_rnr_timer = attr->min_rnr_timer;
1900 resp.port_num = attr->port_num;
1901 resp.timeout = attr->timeout;
1902 resp.retry_cnt = attr->retry_cnt;
1903 resp.rnr_retry = attr->rnr_retry;
1904 resp.alt_port_num = attr->alt_port_num;
1905 resp.alt_timeout = attr->alt_timeout;
1906
1907 copy_ah_attr_to_uverbs(&resp.dest, &attr->ah_attr);
1908 copy_ah_attr_to_uverbs(&resp.alt_dest, &attr->alt_ah_attr);
1909
1910 resp.max_send_wr = init_attr->cap.max_send_wr;
1911 resp.max_recv_wr = init_attr->cap.max_recv_wr;
1912 resp.max_send_sge = init_attr->cap.max_send_sge;
1913 resp.max_recv_sge = init_attr->cap.max_recv_sge;
1914 resp.max_inline_data = init_attr->cap.max_inline_data;
1915 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
1916
1917 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
1918 ret = -EFAULT;
1919
1920out:
1921 kfree(attr);
1922 kfree(init_attr);
1923
1924 return ret ? ret : in_len;
1925}
1926
1927
1928static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
1929{
1930 switch (qp_type) {
1931 case IB_QPT_XRC_INI:
1932 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
1933 case IB_QPT_XRC_TGT:
1934 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
1935 IB_QP_RNR_RETRY);
1936 default:
1937 return mask;
1938 }
1939}
1940
1941static void copy_ah_attr_from_uverbs(struct ib_device *dev,
1942 struct rdma_ah_attr *rdma_attr,
1943 struct ib_uverbs_qp_dest *uverb_attr)
1944{
1945 rdma_attr->type = rdma_ah_find_type(dev, uverb_attr->port_num);
1946 if (uverb_attr->is_global) {
1947 rdma_ah_set_grh(rdma_attr, NULL,
1948 uverb_attr->flow_label,
1949 uverb_attr->sgid_index,
1950 uverb_attr->hop_limit,
1951 uverb_attr->traffic_class);
1952 rdma_ah_set_dgid_raw(rdma_attr, uverb_attr->dgid);
1953 } else {
1954 rdma_ah_set_ah_flags(rdma_attr, 0);
1955 }
1956 rdma_ah_set_dlid(rdma_attr, uverb_attr->dlid);
1957 rdma_ah_set_sl(rdma_attr, uverb_attr->sl);
1958 rdma_ah_set_path_bits(rdma_attr, uverb_attr->src_path_bits);
1959 rdma_ah_set_static_rate(rdma_attr, uverb_attr->static_rate);
1960 rdma_ah_set_port_num(rdma_attr, uverb_attr->port_num);
1961 rdma_ah_set_make_grd(rdma_attr, false);
1962}
1963
1964static int modify_qp(struct ib_uverbs_file *file,
1965 struct ib_uverbs_ex_modify_qp *cmd, struct ib_udata *udata)
1966{
1967 struct ib_qp_attr *attr;
1968 struct ib_qp *qp;
1969 int ret;
1970
1971 attr = kmalloc(sizeof *attr, GFP_KERNEL);
1972 if (!attr)
1973 return -ENOMEM;
1974
1975 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd->base.qp_handle, file->ucontext);
1976 if (!qp) {
1977 ret = -EINVAL;
1978 goto out;
1979 }
1980
1981 if ((cmd->base.attr_mask & IB_QP_PORT) &&
1982 !rdma_is_port_valid(qp->device, cmd->base.port_num)) {
1983 ret = -EINVAL;
1984 goto release_qp;
1985 }
1986
1987 if ((cmd->base.attr_mask & IB_QP_AV)) {
1988 if (!rdma_is_port_valid(qp->device, cmd->base.dest.port_num)) {
1989 ret = -EINVAL;
1990 goto release_qp;
1991 }
1992
1993 if (cmd->base.attr_mask & IB_QP_STATE &&
1994 cmd->base.qp_state == IB_QPS_RTR) {
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009 if (cmd->base.dest.port_num != qp->real_qp->port) {
2010 ret = -EINVAL;
2011 goto release_qp;
2012 }
2013 } else {
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027 if (((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
2028 == (IB_QP_AV | IB_QP_PORT)) &&
2029 cmd->base.port_num != cmd->base.dest.port_num) {
2030 ret = -EINVAL;
2031 goto release_qp;
2032 }
2033 if ((cmd->base.attr_mask & (IB_QP_AV | IB_QP_PORT))
2034 == IB_QP_AV) {
2035 cmd->base.attr_mask |= IB_QP_PORT;
2036 cmd->base.port_num = cmd->base.dest.port_num;
2037 }
2038 }
2039 }
2040
2041 if ((cmd->base.attr_mask & IB_QP_ALT_PATH) &&
2042 (!rdma_is_port_valid(qp->device, cmd->base.alt_port_num) ||
2043 !rdma_is_port_valid(qp->device, cmd->base.alt_dest.port_num) ||
2044 cmd->base.alt_port_num != cmd->base.alt_dest.port_num)) {
2045 ret = -EINVAL;
2046 goto release_qp;
2047 }
2048
2049 if ((cmd->base.attr_mask & IB_QP_CUR_STATE &&
2050 cmd->base.cur_qp_state > IB_QPS_ERR) ||
2051 cmd->base.qp_state > IB_QPS_ERR) {
2052 ret = -EINVAL;
2053 goto release_qp;
2054 }
2055
2056 attr->qp_state = cmd->base.qp_state;
2057 attr->cur_qp_state = cmd->base.cur_qp_state;
2058 attr->path_mtu = cmd->base.path_mtu;
2059 attr->path_mig_state = cmd->base.path_mig_state;
2060 attr->qkey = cmd->base.qkey;
2061 attr->rq_psn = cmd->base.rq_psn;
2062 attr->sq_psn = cmd->base.sq_psn;
2063 attr->dest_qp_num = cmd->base.dest_qp_num;
2064 attr->qp_access_flags = cmd->base.qp_access_flags;
2065 attr->pkey_index = cmd->base.pkey_index;
2066 attr->alt_pkey_index = cmd->base.alt_pkey_index;
2067 attr->en_sqd_async_notify = cmd->base.en_sqd_async_notify;
2068 attr->max_rd_atomic = cmd->base.max_rd_atomic;
2069 attr->max_dest_rd_atomic = cmd->base.max_dest_rd_atomic;
2070 attr->min_rnr_timer = cmd->base.min_rnr_timer;
2071 attr->port_num = cmd->base.port_num;
2072 attr->timeout = cmd->base.timeout;
2073 attr->retry_cnt = cmd->base.retry_cnt;
2074 attr->rnr_retry = cmd->base.rnr_retry;
2075 attr->alt_port_num = cmd->base.alt_port_num;
2076 attr->alt_timeout = cmd->base.alt_timeout;
2077 attr->rate_limit = cmd->rate_limit;
2078
2079 if (cmd->base.attr_mask & IB_QP_AV)
2080 copy_ah_attr_from_uverbs(qp->device, &attr->ah_attr,
2081 &cmd->base.dest);
2082
2083 if (cmd->base.attr_mask & IB_QP_ALT_PATH)
2084 copy_ah_attr_from_uverbs(qp->device, &attr->alt_ah_attr,
2085 &cmd->base.alt_dest);
2086
2087 ret = ib_modify_qp_with_udata(qp, attr,
2088 modify_qp_mask(qp->qp_type,
2089 cmd->base.attr_mask),
2090 udata);
2091
2092release_qp:
2093 uobj_put_obj_read(qp);
2094out:
2095 kfree(attr);
2096
2097 return ret;
2098}
2099
2100ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
2101 struct ib_device *ib_dev,
2102 const char __user *buf, int in_len,
2103 int out_len)
2104{
2105 struct ib_uverbs_ex_modify_qp cmd = {};
2106 struct ib_udata udata;
2107 int ret;
2108
2109 if (copy_from_user(&cmd.base, buf, sizeof(cmd.base)))
2110 return -EFAULT;
2111
2112 if (cmd.base.attr_mask &
2113 ~((IB_USER_LEGACY_LAST_QP_ATTR_MASK << 1) - 1))
2114 return -EOPNOTSUPP;
2115
2116 ib_uverbs_init_udata(&udata, buf + sizeof(cmd.base), NULL,
2117 in_len - sizeof(cmd.base) - sizeof(struct ib_uverbs_cmd_hdr),
2118 out_len);
2119
2120 ret = modify_qp(file, &cmd, &udata);
2121 if (ret)
2122 return ret;
2123
2124 return in_len;
2125}
2126
2127int ib_uverbs_ex_modify_qp(struct ib_uverbs_file *file,
2128 struct ib_device *ib_dev,
2129 struct ib_udata *ucore,
2130 struct ib_udata *uhw)
2131{
2132 struct ib_uverbs_ex_modify_qp cmd = {};
2133 int ret;
2134
2135
2136
2137
2138
2139 BUILD_BUG_ON(IB_USER_LAST_QP_ATTR_MASK == (1 << 31));
2140
2141 if (ucore->inlen < sizeof(cmd.base))
2142 return -EINVAL;
2143
2144 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
2145 if (ret)
2146 return ret;
2147
2148 if (cmd.base.attr_mask &
2149 ~((IB_USER_LAST_QP_ATTR_MASK << 1) - 1))
2150 return -EOPNOTSUPP;
2151
2152 if (ucore->inlen > sizeof(cmd)) {
2153 if (!ib_is_udata_cleared(ucore, sizeof(cmd),
2154 ucore->inlen - sizeof(cmd)))
2155 return -EOPNOTSUPP;
2156 }
2157
2158 ret = modify_qp(file, &cmd, uhw);
2159
2160 return ret;
2161}
2162
2163ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
2164 struct ib_device *ib_dev,
2165 const char __user *buf, int in_len,
2166 int out_len)
2167{
2168 struct ib_uverbs_destroy_qp cmd;
2169 struct ib_uverbs_destroy_qp_resp resp;
2170 struct ib_uobject *uobj;
2171 struct ib_uqp_object *obj;
2172 int ret = -EINVAL;
2173
2174 if (copy_from_user(&cmd, buf, sizeof cmd))
2175 return -EFAULT;
2176
2177 memset(&resp, 0, sizeof resp);
2178
2179 uobj = uobj_get_write(UVERBS_OBJECT_QP, cmd.qp_handle,
2180 file->ucontext);
2181 if (IS_ERR(uobj))
2182 return PTR_ERR(uobj);
2183
2184 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
2185
2186
2187
2188
2189 uverbs_uobject_get(uobj);
2190
2191 ret = uobj_remove_commit(uobj);
2192 if (ret) {
2193 uverbs_uobject_put(uobj);
2194 return ret;
2195 }
2196
2197 resp.events_reported = obj->uevent.events_reported;
2198 uverbs_uobject_put(uobj);
2199
2200 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
2201 return -EFAULT;
2202
2203 return in_len;
2204}
2205
2206static void *alloc_wr(size_t wr_size, __u32 num_sge)
2207{
2208 if (num_sge >= (U32_MAX - ALIGN(wr_size, sizeof (struct ib_sge))) /
2209 sizeof (struct ib_sge))
2210 return NULL;
2211
2212 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) +
2213 num_sge * sizeof (struct ib_sge), GFP_KERNEL);
2214}
2215
2216ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
2217 struct ib_device *ib_dev,
2218 const char __user *buf, int in_len,
2219 int out_len)
2220{
2221 struct ib_uverbs_post_send cmd;
2222 struct ib_uverbs_post_send_resp resp;
2223 struct ib_uverbs_send_wr *user_wr;
2224 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
2225 struct ib_qp *qp;
2226 int i, sg_ind;
2227 int is_ud;
2228 ssize_t ret = -EINVAL;
2229 size_t next_size;
2230
2231 if (copy_from_user(&cmd, buf, sizeof cmd))
2232 return -EFAULT;
2233
2234 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
2235 cmd.sge_count * sizeof (struct ib_uverbs_sge))
2236 return -EINVAL;
2237
2238 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
2239 return -EINVAL;
2240
2241 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2242 if (!user_wr)
2243 return -ENOMEM;
2244
2245 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, file->ucontext);
2246 if (!qp)
2247 goto out;
2248
2249 is_ud = qp->qp_type == IB_QPT_UD;
2250 sg_ind = 0;
2251 last = NULL;
2252 for (i = 0; i < cmd.wr_count; ++i) {
2253 if (copy_from_user(user_wr,
2254 buf + sizeof cmd + i * cmd.wqe_size,
2255 cmd.wqe_size)) {
2256 ret = -EFAULT;
2257 goto out_put;
2258 }
2259
2260 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2261 ret = -EINVAL;
2262 goto out_put;
2263 }
2264
2265 if (is_ud) {
2266 struct ib_ud_wr *ud;
2267
2268 if (user_wr->opcode != IB_WR_SEND &&
2269 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2270 ret = -EINVAL;
2271 goto out_put;
2272 }
2273
2274 next_size = sizeof(*ud);
2275 ud = alloc_wr(next_size, user_wr->num_sge);
2276 if (!ud) {
2277 ret = -ENOMEM;
2278 goto out_put;
2279 }
2280
2281 ud->ah = uobj_get_obj_read(ah, UVERBS_OBJECT_AH, user_wr->wr.ud.ah,
2282 file->ucontext);
2283 if (!ud->ah) {
2284 kfree(ud);
2285 ret = -EINVAL;
2286 goto out_put;
2287 }
2288 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2289 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2290
2291 next = &ud->wr;
2292 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2293 user_wr->opcode == IB_WR_RDMA_WRITE ||
2294 user_wr->opcode == IB_WR_RDMA_READ) {
2295 struct ib_rdma_wr *rdma;
2296
2297 next_size = sizeof(*rdma);
2298 rdma = alloc_wr(next_size, user_wr->num_sge);
2299 if (!rdma) {
2300 ret = -ENOMEM;
2301 goto out_put;
2302 }
2303
2304 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2305 rdma->rkey = user_wr->wr.rdma.rkey;
2306
2307 next = &rdma->wr;
2308 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2309 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2310 struct ib_atomic_wr *atomic;
2311
2312 next_size = sizeof(*atomic);
2313 atomic = alloc_wr(next_size, user_wr->num_sge);
2314 if (!atomic) {
2315 ret = -ENOMEM;
2316 goto out_put;
2317 }
2318
2319 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2320 atomic->compare_add = user_wr->wr.atomic.compare_add;
2321 atomic->swap = user_wr->wr.atomic.swap;
2322 atomic->rkey = user_wr->wr.atomic.rkey;
2323
2324 next = &atomic->wr;
2325 } else if (user_wr->opcode == IB_WR_SEND ||
2326 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2327 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2328 next_size = sizeof(*next);
2329 next = alloc_wr(next_size, user_wr->num_sge);
2330 if (!next) {
2331 ret = -ENOMEM;
2332 goto out_put;
2333 }
2334 } else {
2335 ret = -EINVAL;
2336 goto out_put;
2337 }
2338
2339 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2340 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2341 next->ex.imm_data =
2342 (__be32 __force) user_wr->ex.imm_data;
2343 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2344 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2345 }
2346
2347 if (!last)
2348 wr = next;
2349 else
2350 last->next = next;
2351 last = next;
2352
2353 next->next = NULL;
2354 next->wr_id = user_wr->wr_id;
2355 next->num_sge = user_wr->num_sge;
2356 next->opcode = user_wr->opcode;
2357 next->send_flags = user_wr->send_flags;
2358
2359 if (next->num_sge) {
2360 next->sg_list = (void *) next +
2361 ALIGN(next_size, sizeof(struct ib_sge));
2362 if (copy_from_user(next->sg_list,
2363 buf + sizeof cmd +
2364 cmd.wr_count * cmd.wqe_size +
2365 sg_ind * sizeof (struct ib_sge),
2366 next->num_sge * sizeof (struct ib_sge))) {
2367 ret = -EFAULT;
2368 goto out_put;
2369 }
2370 sg_ind += next->num_sge;
2371 } else
2372 next->sg_list = NULL;
2373 }
2374
2375 resp.bad_wr = 0;
2376 ret = qp->device->post_send(qp->real_qp, wr, &bad_wr);
2377 if (ret)
2378 for (next = wr; next; next = next->next) {
2379 ++resp.bad_wr;
2380 if (next == bad_wr)
2381 break;
2382 }
2383
2384 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
2385 ret = -EFAULT;
2386
2387out_put:
2388 uobj_put_obj_read(qp);
2389
2390 while (wr) {
2391 if (is_ud && ud_wr(wr)->ah)
2392 uobj_put_obj_read(ud_wr(wr)->ah);
2393 next = wr->next;
2394 kfree(wr);
2395 wr = next;
2396 }
2397
2398out:
2399 kfree(user_wr);
2400
2401 return ret ? ret : in_len;
2402}
2403
2404static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
2405 int in_len,
2406 u32 wr_count,
2407 u32 sge_count,
2408 u32 wqe_size)
2409{
2410 struct ib_uverbs_recv_wr *user_wr;
2411 struct ib_recv_wr *wr = NULL, *last, *next;
2412 int sg_ind;
2413 int i;
2414 int ret;
2415
2416 if (in_len < wqe_size * wr_count +
2417 sge_count * sizeof (struct ib_uverbs_sge))
2418 return ERR_PTR(-EINVAL);
2419
2420 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
2421 return ERR_PTR(-EINVAL);
2422
2423 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2424 if (!user_wr)
2425 return ERR_PTR(-ENOMEM);
2426
2427 sg_ind = 0;
2428 last = NULL;
2429 for (i = 0; i < wr_count; ++i) {
2430 if (copy_from_user(user_wr, buf + i * wqe_size,
2431 wqe_size)) {
2432 ret = -EFAULT;
2433 goto err;
2434 }
2435
2436 if (user_wr->num_sge + sg_ind > sge_count) {
2437 ret = -EINVAL;
2438 goto err;
2439 }
2440
2441 if (user_wr->num_sge >=
2442 (U32_MAX - ALIGN(sizeof *next, sizeof (struct ib_sge))) /
2443 sizeof (struct ib_sge)) {
2444 ret = -EINVAL;
2445 goto err;
2446 }
2447
2448 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2449 user_wr->num_sge * sizeof (struct ib_sge),
2450 GFP_KERNEL);
2451 if (!next) {
2452 ret = -ENOMEM;
2453 goto err;
2454 }
2455
2456 if (!last)
2457 wr = next;
2458 else
2459 last->next = next;
2460 last = next;
2461
2462 next->next = NULL;
2463 next->wr_id = user_wr->wr_id;
2464 next->num_sge = user_wr->num_sge;
2465
2466 if (next->num_sge) {
2467 next->sg_list = (void *) next +
2468 ALIGN(sizeof *next, sizeof (struct ib_sge));
2469 if (copy_from_user(next->sg_list,
2470 buf + wr_count * wqe_size +
2471 sg_ind * sizeof (struct ib_sge),
2472 next->num_sge * sizeof (struct ib_sge))) {
2473 ret = -EFAULT;
2474 goto err;
2475 }
2476 sg_ind += next->num_sge;
2477 } else
2478 next->sg_list = NULL;
2479 }
2480
2481 kfree(user_wr);
2482 return wr;
2483
2484err:
2485 kfree(user_wr);
2486
2487 while (wr) {
2488 next = wr->next;
2489 kfree(wr);
2490 wr = next;
2491 }
2492
2493 return ERR_PTR(ret);
2494}
2495
2496ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
2497 struct ib_device *ib_dev,
2498 const char __user *buf, int in_len,
2499 int out_len)
2500{
2501 struct ib_uverbs_post_recv cmd;
2502 struct ib_uverbs_post_recv_resp resp;
2503 struct ib_recv_wr *wr, *next, *bad_wr;
2504 struct ib_qp *qp;
2505 ssize_t ret = -EINVAL;
2506
2507 if (copy_from_user(&cmd, buf, sizeof cmd))
2508 return -EFAULT;
2509
2510 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2511 in_len - sizeof cmd, cmd.wr_count,
2512 cmd.sge_count, cmd.wqe_size);
2513 if (IS_ERR(wr))
2514 return PTR_ERR(wr);
2515
2516 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, file->ucontext);
2517 if (!qp)
2518 goto out;
2519
2520 resp.bad_wr = 0;
2521 ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr);
2522
2523 uobj_put_obj_read(qp);
2524 if (ret) {
2525 for (next = wr; next; next = next->next) {
2526 ++resp.bad_wr;
2527 if (next == bad_wr)
2528 break;
2529 }
2530 }
2531
2532 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
2533 ret = -EFAULT;
2534
2535out:
2536 while (wr) {
2537 next = wr->next;
2538 kfree(wr);
2539 wr = next;
2540 }
2541
2542 return ret ? ret : in_len;
2543}
2544
2545ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
2546 struct ib_device *ib_dev,
2547 const char __user *buf, int in_len,
2548 int out_len)
2549{
2550 struct ib_uverbs_post_srq_recv cmd;
2551 struct ib_uverbs_post_srq_recv_resp resp;
2552 struct ib_recv_wr *wr, *next, *bad_wr;
2553 struct ib_srq *srq;
2554 ssize_t ret = -EINVAL;
2555
2556 if (copy_from_user(&cmd, buf, sizeof cmd))
2557 return -EFAULT;
2558
2559 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2560 in_len - sizeof cmd, cmd.wr_count,
2561 cmd.sge_count, cmd.wqe_size);
2562 if (IS_ERR(wr))
2563 return PTR_ERR(wr);
2564
2565 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, file->ucontext);
2566 if (!srq)
2567 goto out;
2568
2569 resp.bad_wr = 0;
2570 ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
2571
2572 uobj_put_obj_read(srq);
2573
2574 if (ret)
2575 for (next = wr; next; next = next->next) {
2576 ++resp.bad_wr;
2577 if (next == bad_wr)
2578 break;
2579 }
2580
2581 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
2582 ret = -EFAULT;
2583
2584out:
2585 while (wr) {
2586 next = wr->next;
2587 kfree(wr);
2588 wr = next;
2589 }
2590
2591 return ret ? ret : in_len;
2592}
2593
2594ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
2595 struct ib_device *ib_dev,
2596 const char __user *buf, int in_len,
2597 int out_len)
2598{
2599 struct ib_uverbs_create_ah cmd;
2600 struct ib_uverbs_create_ah_resp resp;
2601 struct ib_uobject *uobj;
2602 struct ib_pd *pd;
2603 struct ib_ah *ah;
2604 struct rdma_ah_attr attr;
2605 int ret;
2606 struct ib_udata udata;
2607
2608 if (out_len < sizeof resp)
2609 return -ENOSPC;
2610
2611 if (copy_from_user(&cmd, buf, sizeof cmd))
2612 return -EFAULT;
2613
2614 if (!rdma_is_port_valid(ib_dev, cmd.attr.port_num))
2615 return -EINVAL;
2616
2617 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
2618 u64_to_user_ptr(cmd.response) + sizeof(resp),
2619 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
2620 out_len - sizeof(resp));
2621
2622 uobj = uobj_alloc(UVERBS_OBJECT_AH, file->ucontext);
2623 if (IS_ERR(uobj))
2624 return PTR_ERR(uobj);
2625
2626 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, file->ucontext);
2627 if (!pd) {
2628 ret = -EINVAL;
2629 goto err;
2630 }
2631
2632 attr.type = rdma_ah_find_type(ib_dev, cmd.attr.port_num);
2633 rdma_ah_set_make_grd(&attr, false);
2634 rdma_ah_set_dlid(&attr, cmd.attr.dlid);
2635 rdma_ah_set_sl(&attr, cmd.attr.sl);
2636 rdma_ah_set_path_bits(&attr, cmd.attr.src_path_bits);
2637 rdma_ah_set_static_rate(&attr, cmd.attr.static_rate);
2638 rdma_ah_set_port_num(&attr, cmd.attr.port_num);
2639
2640 if (cmd.attr.is_global) {
2641 rdma_ah_set_grh(&attr, NULL, cmd.attr.grh.flow_label,
2642 cmd.attr.grh.sgid_index,
2643 cmd.attr.grh.hop_limit,
2644 cmd.attr.grh.traffic_class);
2645 rdma_ah_set_dgid_raw(&attr, cmd.attr.grh.dgid);
2646 } else {
2647 rdma_ah_set_ah_flags(&attr, 0);
2648 }
2649
2650 ah = rdma_create_user_ah(pd, &attr, &udata);
2651 if (IS_ERR(ah)) {
2652 ret = PTR_ERR(ah);
2653 goto err_put;
2654 }
2655
2656 ah->uobject = uobj;
2657 uobj->user_handle = cmd.user_handle;
2658 uobj->object = ah;
2659
2660 resp.ah_handle = uobj->id;
2661
2662 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp)) {
2663 ret = -EFAULT;
2664 goto err_copy;
2665 }
2666
2667 uobj_put_obj_read(pd);
2668 uobj_alloc_commit(uobj);
2669
2670 return in_len;
2671
2672err_copy:
2673 rdma_destroy_ah(ah);
2674
2675err_put:
2676 uobj_put_obj_read(pd);
2677
2678err:
2679 uobj_alloc_abort(uobj);
2680 return ret;
2681}
2682
2683ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
2684 struct ib_device *ib_dev,
2685 const char __user *buf, int in_len, int out_len)
2686{
2687 struct ib_uverbs_destroy_ah cmd;
2688 struct ib_uobject *uobj;
2689 int ret;
2690
2691 if (copy_from_user(&cmd, buf, sizeof cmd))
2692 return -EFAULT;
2693
2694 uobj = uobj_get_write(UVERBS_OBJECT_AH, cmd.ah_handle,
2695 file->ucontext);
2696 if (IS_ERR(uobj))
2697 return PTR_ERR(uobj);
2698
2699 ret = uobj_remove_commit(uobj);
2700 return ret ?: in_len;
2701}
2702
2703ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
2704 struct ib_device *ib_dev,
2705 const char __user *buf, int in_len,
2706 int out_len)
2707{
2708 struct ib_uverbs_attach_mcast cmd;
2709 struct ib_qp *qp;
2710 struct ib_uqp_object *obj;
2711 struct ib_uverbs_mcast_entry *mcast;
2712 int ret;
2713
2714 if (copy_from_user(&cmd, buf, sizeof cmd))
2715 return -EFAULT;
2716
2717 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, file->ucontext);
2718 if (!qp)
2719 return -EINVAL;
2720
2721 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2722
2723 mutex_lock(&obj->mcast_lock);
2724 list_for_each_entry(mcast, &obj->mcast_list, list)
2725 if (cmd.mlid == mcast->lid &&
2726 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2727 ret = 0;
2728 goto out_put;
2729 }
2730
2731 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2732 if (!mcast) {
2733 ret = -ENOMEM;
2734 goto out_put;
2735 }
2736
2737 mcast->lid = cmd.mlid;
2738 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2739
2740 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2741 if (!ret)
2742 list_add_tail(&mcast->list, &obj->mcast_list);
2743 else
2744 kfree(mcast);
2745
2746out_put:
2747 mutex_unlock(&obj->mcast_lock);
2748 uobj_put_obj_read(qp);
2749
2750 return ret ? ret : in_len;
2751}
2752
2753ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
2754 struct ib_device *ib_dev,
2755 const char __user *buf, int in_len,
2756 int out_len)
2757{
2758 struct ib_uverbs_detach_mcast cmd;
2759 struct ib_uqp_object *obj;
2760 struct ib_qp *qp;
2761 struct ib_uverbs_mcast_entry *mcast;
2762 int ret = -EINVAL;
2763 bool found = false;
2764
2765 if (copy_from_user(&cmd, buf, sizeof cmd))
2766 return -EFAULT;
2767
2768 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, file->ucontext);
2769 if (!qp)
2770 return -EINVAL;
2771
2772 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2773 mutex_lock(&obj->mcast_lock);
2774
2775 list_for_each_entry(mcast, &obj->mcast_list, list)
2776 if (cmd.mlid == mcast->lid &&
2777 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2778 list_del(&mcast->list);
2779 kfree(mcast);
2780 found = true;
2781 break;
2782 }
2783
2784 if (!found) {
2785 ret = -EINVAL;
2786 goto out_put;
2787 }
2788
2789 ret = ib_detach_mcast(qp, (union ib_gid *)cmd.gid, cmd.mlid);
2790
2791out_put:
2792 mutex_unlock(&obj->mcast_lock);
2793 uobj_put_obj_read(qp);
2794 return ret ? ret : in_len;
2795}
2796
2797struct ib_uflow_resources {
2798 size_t max;
2799 size_t num;
2800 size_t collection_num;
2801 size_t counters_num;
2802 struct ib_counters **counters;
2803 struct ib_flow_action **collection;
2804};
2805
2806static struct ib_uflow_resources *flow_resources_alloc(size_t num_specs)
2807{
2808 struct ib_uflow_resources *resources;
2809
2810 resources = kzalloc(sizeof(*resources), GFP_KERNEL);
2811
2812 if (!resources)
2813 goto err_res;
2814
2815 resources->counters =
2816 kcalloc(num_specs, sizeof(*resources->counters), GFP_KERNEL);
2817
2818 if (!resources->counters)
2819 goto err_cnt;
2820
2821 resources->collection =
2822 kcalloc(num_specs, sizeof(*resources->collection), GFP_KERNEL);
2823
2824 if (!resources->collection)
2825 goto err_collection;
2826
2827 resources->max = num_specs;
2828
2829 return resources;
2830
2831err_collection:
2832 kfree(resources->counters);
2833err_cnt:
2834 kfree(resources);
2835err_res:
2836 return NULL;
2837}
2838
2839void ib_uverbs_flow_resources_free(struct ib_uflow_resources *uflow_res)
2840{
2841 unsigned int i;
2842
2843 for (i = 0; i < uflow_res->collection_num; i++)
2844 atomic_dec(&uflow_res->collection[i]->usecnt);
2845
2846 for (i = 0; i < uflow_res->counters_num; i++)
2847 atomic_dec(&uflow_res->counters[i]->usecnt);
2848
2849 kfree(uflow_res->collection);
2850 kfree(uflow_res->counters);
2851 kfree(uflow_res);
2852}
2853
2854static void flow_resources_add(struct ib_uflow_resources *uflow_res,
2855 enum ib_flow_spec_type type,
2856 void *ibobj)
2857{
2858 WARN_ON(uflow_res->num >= uflow_res->max);
2859
2860 switch (type) {
2861 case IB_FLOW_SPEC_ACTION_HANDLE:
2862 atomic_inc(&((struct ib_flow_action *)ibobj)->usecnt);
2863 uflow_res->collection[uflow_res->collection_num++] =
2864 (struct ib_flow_action *)ibobj;
2865 break;
2866 case IB_FLOW_SPEC_ACTION_COUNT:
2867 atomic_inc(&((struct ib_counters *)ibobj)->usecnt);
2868 uflow_res->counters[uflow_res->counters_num++] =
2869 (struct ib_counters *)ibobj;
2870 break;
2871 default:
2872 WARN_ON(1);
2873 }
2874
2875 uflow_res->num++;
2876}
2877
2878static int kern_spec_to_ib_spec_action(struct ib_ucontext *ucontext,
2879 struct ib_uverbs_flow_spec *kern_spec,
2880 union ib_flow_spec *ib_spec,
2881 struct ib_uflow_resources *uflow_res)
2882{
2883 ib_spec->type = kern_spec->type;
2884 switch (ib_spec->type) {
2885 case IB_FLOW_SPEC_ACTION_TAG:
2886 if (kern_spec->flow_tag.size !=
2887 sizeof(struct ib_uverbs_flow_spec_action_tag))
2888 return -EINVAL;
2889
2890 ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
2891 ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
2892 break;
2893 case IB_FLOW_SPEC_ACTION_DROP:
2894 if (kern_spec->drop.size !=
2895 sizeof(struct ib_uverbs_flow_spec_action_drop))
2896 return -EINVAL;
2897
2898 ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
2899 break;
2900 case IB_FLOW_SPEC_ACTION_HANDLE:
2901 if (kern_spec->action.size !=
2902 sizeof(struct ib_uverbs_flow_spec_action_handle))
2903 return -EOPNOTSUPP;
2904 ib_spec->action.act = uobj_get_obj_read(flow_action,
2905 UVERBS_OBJECT_FLOW_ACTION,
2906 kern_spec->action.handle,
2907 ucontext);
2908 if (!ib_spec->action.act)
2909 return -EINVAL;
2910 ib_spec->action.size =
2911 sizeof(struct ib_flow_spec_action_handle);
2912 flow_resources_add(uflow_res,
2913 IB_FLOW_SPEC_ACTION_HANDLE,
2914 ib_spec->action.act);
2915 uobj_put_obj_read(ib_spec->action.act);
2916 break;
2917 case IB_FLOW_SPEC_ACTION_COUNT:
2918 if (kern_spec->flow_count.size !=
2919 sizeof(struct ib_uverbs_flow_spec_action_count))
2920 return -EINVAL;
2921 ib_spec->flow_count.counters =
2922 uobj_get_obj_read(counters,
2923 UVERBS_OBJECT_COUNTERS,
2924 kern_spec->flow_count.handle,
2925 ucontext);
2926 if (!ib_spec->flow_count.counters)
2927 return -EINVAL;
2928 ib_spec->flow_count.size =
2929 sizeof(struct ib_flow_spec_action_count);
2930 flow_resources_add(uflow_res,
2931 IB_FLOW_SPEC_ACTION_COUNT,
2932 ib_spec->flow_count.counters);
2933 uobj_put_obj_read(ib_spec->flow_count.counters);
2934 break;
2935 default:
2936 return -EINVAL;
2937 }
2938 return 0;
2939}
2940
2941static size_t kern_spec_filter_sz(const struct ib_uverbs_flow_spec_hdr *spec)
2942{
2943
2944 return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2;
2945}
2946
2947static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
2948 u16 ib_real_filter_sz)
2949{
2950
2951
2952
2953
2954
2955 if (kern_filter_size > ib_real_filter_sz) {
2956 if (memchr_inv(kern_spec_filter +
2957 ib_real_filter_sz, 0,
2958 kern_filter_size - ib_real_filter_sz))
2959 return -EINVAL;
2960 return ib_real_filter_sz;
2961 }
2962 return kern_filter_size;
2963}
2964
2965int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
2966 const void *kern_spec_mask,
2967 const void *kern_spec_val,
2968 size_t kern_filter_sz,
2969 union ib_flow_spec *ib_spec)
2970{
2971 ssize_t actual_filter_sz;
2972 ssize_t ib_filter_sz;
2973
2974
2975 if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
2976 return -EINVAL;
2977
2978 ib_spec->type = type;
2979
2980 if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
2981 return -EINVAL;
2982
2983 switch (ib_spec->type & ~IB_FLOW_SPEC_INNER) {
2984 case IB_FLOW_SPEC_ETH:
2985 ib_filter_sz = offsetof(struct ib_flow_eth_filter, real_sz);
2986 actual_filter_sz = spec_filter_size(kern_spec_mask,
2987 kern_filter_sz,
2988 ib_filter_sz);
2989 if (actual_filter_sz <= 0)
2990 return -EINVAL;
2991 ib_spec->size = sizeof(struct ib_flow_spec_eth);
2992 memcpy(&ib_spec->eth.val, kern_spec_val, actual_filter_sz);
2993 memcpy(&ib_spec->eth.mask, kern_spec_mask, actual_filter_sz);
2994 break;
2995 case IB_FLOW_SPEC_IPV4:
2996 ib_filter_sz = offsetof(struct ib_flow_ipv4_filter, real_sz);
2997 actual_filter_sz = spec_filter_size(kern_spec_mask,
2998 kern_filter_sz,
2999 ib_filter_sz);
3000 if (actual_filter_sz <= 0)
3001 return -EINVAL;
3002 ib_spec->size = sizeof(struct ib_flow_spec_ipv4);
3003 memcpy(&ib_spec->ipv4.val, kern_spec_val, actual_filter_sz);
3004 memcpy(&ib_spec->ipv4.mask, kern_spec_mask, actual_filter_sz);
3005 break;
3006 case IB_FLOW_SPEC_IPV6:
3007 ib_filter_sz = offsetof(struct ib_flow_ipv6_filter, real_sz);
3008 actual_filter_sz = spec_filter_size(kern_spec_mask,
3009 kern_filter_sz,
3010 ib_filter_sz);
3011 if (actual_filter_sz <= 0)
3012 return -EINVAL;
3013 ib_spec->size = sizeof(struct ib_flow_spec_ipv6);
3014 memcpy(&ib_spec->ipv6.val, kern_spec_val, actual_filter_sz);
3015 memcpy(&ib_spec->ipv6.mask, kern_spec_mask, actual_filter_sz);
3016
3017 if ((ntohl(ib_spec->ipv6.mask.flow_label)) >= BIT(20) ||
3018 (ntohl(ib_spec->ipv6.val.flow_label)) >= BIT(20))
3019 return -EINVAL;
3020 break;
3021 case IB_FLOW_SPEC_TCP:
3022 case IB_FLOW_SPEC_UDP:
3023 ib_filter_sz = offsetof(struct ib_flow_tcp_udp_filter, real_sz);
3024 actual_filter_sz = spec_filter_size(kern_spec_mask,
3025 kern_filter_sz,
3026 ib_filter_sz);
3027 if (actual_filter_sz <= 0)
3028 return -EINVAL;
3029 ib_spec->size = sizeof(struct ib_flow_spec_tcp_udp);
3030 memcpy(&ib_spec->tcp_udp.val, kern_spec_val, actual_filter_sz);
3031 memcpy(&ib_spec->tcp_udp.mask, kern_spec_mask, actual_filter_sz);
3032 break;
3033 case IB_FLOW_SPEC_VXLAN_TUNNEL:
3034 ib_filter_sz = offsetof(struct ib_flow_tunnel_filter, real_sz);
3035 actual_filter_sz = spec_filter_size(kern_spec_mask,
3036 kern_filter_sz,
3037 ib_filter_sz);
3038 if (actual_filter_sz <= 0)
3039 return -EINVAL;
3040 ib_spec->tunnel.size = sizeof(struct ib_flow_spec_tunnel);
3041 memcpy(&ib_spec->tunnel.val, kern_spec_val, actual_filter_sz);
3042 memcpy(&ib_spec->tunnel.mask, kern_spec_mask, actual_filter_sz);
3043
3044 if ((ntohl(ib_spec->tunnel.mask.tunnel_id)) >= BIT(24) ||
3045 (ntohl(ib_spec->tunnel.val.tunnel_id)) >= BIT(24))
3046 return -EINVAL;
3047 break;
3048 case IB_FLOW_SPEC_ESP:
3049 ib_filter_sz = offsetof(struct ib_flow_esp_filter, real_sz);
3050 actual_filter_sz = spec_filter_size(kern_spec_mask,
3051 kern_filter_sz,
3052 ib_filter_sz);
3053 if (actual_filter_sz <= 0)
3054 return -EINVAL;
3055 ib_spec->esp.size = sizeof(struct ib_flow_spec_esp);
3056 memcpy(&ib_spec->esp.val, kern_spec_val, actual_filter_sz);
3057 memcpy(&ib_spec->esp.mask, kern_spec_mask, actual_filter_sz);
3058 break;
3059 case IB_FLOW_SPEC_GRE:
3060 ib_filter_sz = offsetof(struct ib_flow_gre_filter, real_sz);
3061 actual_filter_sz = spec_filter_size(kern_spec_mask,
3062 kern_filter_sz,
3063 ib_filter_sz);
3064 if (actual_filter_sz <= 0)
3065 return -EINVAL;
3066 ib_spec->gre.size = sizeof(struct ib_flow_spec_gre);
3067 memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz);
3068 memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz);
3069 break;
3070 case IB_FLOW_SPEC_MPLS:
3071 ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz);
3072 actual_filter_sz = spec_filter_size(kern_spec_mask,
3073 kern_filter_sz,
3074 ib_filter_sz);
3075 if (actual_filter_sz <= 0)
3076 return -EINVAL;
3077 ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls);
3078 memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz);
3079 memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz);
3080 break;
3081 default:
3082 return -EINVAL;
3083 }
3084 return 0;
3085}
3086
3087static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
3088 union ib_flow_spec *ib_spec)
3089{
3090 ssize_t kern_filter_sz;
3091 void *kern_spec_mask;
3092 void *kern_spec_val;
3093
3094 if (kern_spec->reserved)
3095 return -EINVAL;
3096
3097 kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr);
3098
3099 kern_spec_val = (void *)kern_spec +
3100 sizeof(struct ib_uverbs_flow_spec_hdr);
3101 kern_spec_mask = kern_spec_val + kern_filter_sz;
3102
3103 return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
3104 kern_spec_mask,
3105 kern_spec_val,
3106 kern_filter_sz, ib_spec);
3107}
3108
3109static int kern_spec_to_ib_spec(struct ib_ucontext *ucontext,
3110 struct ib_uverbs_flow_spec *kern_spec,
3111 union ib_flow_spec *ib_spec,
3112 struct ib_uflow_resources *uflow_res)
3113{
3114 if (kern_spec->reserved)
3115 return -EINVAL;
3116
3117 if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG)
3118 return kern_spec_to_ib_spec_action(ucontext, kern_spec, ib_spec,
3119 uflow_res);
3120 else
3121 return kern_spec_to_ib_spec_filter(kern_spec, ib_spec);
3122}
3123
3124int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file,
3125 struct ib_device *ib_dev,
3126 struct ib_udata *ucore,
3127 struct ib_udata *uhw)
3128{
3129 struct ib_uverbs_ex_create_wq cmd = {};
3130 struct ib_uverbs_ex_create_wq_resp resp = {};
3131 struct ib_uwq_object *obj;
3132 int err = 0;
3133 struct ib_cq *cq;
3134 struct ib_pd *pd;
3135 struct ib_wq *wq;
3136 struct ib_wq_init_attr wq_init_attr = {};
3137 size_t required_cmd_sz;
3138 size_t required_resp_len;
3139
3140 required_cmd_sz = offsetof(typeof(cmd), max_sge) + sizeof(cmd.max_sge);
3141 required_resp_len = offsetof(typeof(resp), wqn) + sizeof(resp.wqn);
3142
3143 if (ucore->inlen < required_cmd_sz)
3144 return -EINVAL;
3145
3146 if (ucore->outlen < required_resp_len)
3147 return -ENOSPC;
3148
3149 if (ucore->inlen > sizeof(cmd) &&
3150 !ib_is_udata_cleared(ucore, sizeof(cmd),
3151 ucore->inlen - sizeof(cmd)))
3152 return -EOPNOTSUPP;
3153
3154 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3155 if (err)
3156 return err;
3157
3158 if (cmd.comp_mask)
3159 return -EOPNOTSUPP;
3160
3161 obj = (struct ib_uwq_object *)uobj_alloc(UVERBS_OBJECT_WQ,
3162 file->ucontext);
3163 if (IS_ERR(obj))
3164 return PTR_ERR(obj);
3165
3166 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, file->ucontext);
3167 if (!pd) {
3168 err = -EINVAL;
3169 goto err_uobj;
3170 }
3171
3172 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, file->ucontext);
3173 if (!cq) {
3174 err = -EINVAL;
3175 goto err_put_pd;
3176 }
3177
3178 wq_init_attr.cq = cq;
3179 wq_init_attr.max_sge = cmd.max_sge;
3180 wq_init_attr.max_wr = cmd.max_wr;
3181 wq_init_attr.wq_context = file;
3182 wq_init_attr.wq_type = cmd.wq_type;
3183 wq_init_attr.event_handler = ib_uverbs_wq_event_handler;
3184 if (ucore->inlen >= (offsetof(typeof(cmd), create_flags) +
3185 sizeof(cmd.create_flags)))
3186 wq_init_attr.create_flags = cmd.create_flags;
3187 obj->uevent.events_reported = 0;
3188 INIT_LIST_HEAD(&obj->uevent.event_list);
3189
3190 if (!pd->device->create_wq) {
3191 err = -EOPNOTSUPP;
3192 goto err_put_cq;
3193 }
3194 wq = pd->device->create_wq(pd, &wq_init_attr, uhw);
3195 if (IS_ERR(wq)) {
3196 err = PTR_ERR(wq);
3197 goto err_put_cq;
3198 }
3199
3200 wq->uobject = &obj->uevent.uobject;
3201 obj->uevent.uobject.object = wq;
3202 wq->wq_type = wq_init_attr.wq_type;
3203 wq->cq = cq;
3204 wq->pd = pd;
3205 wq->device = pd->device;
3206 wq->wq_context = wq_init_attr.wq_context;
3207 atomic_set(&wq->usecnt, 0);
3208 atomic_inc(&pd->usecnt);
3209 atomic_inc(&cq->usecnt);
3210 wq->uobject = &obj->uevent.uobject;
3211 obj->uevent.uobject.object = wq;
3212
3213 memset(&resp, 0, sizeof(resp));
3214 resp.wq_handle = obj->uevent.uobject.id;
3215 resp.max_sge = wq_init_attr.max_sge;
3216 resp.max_wr = wq_init_attr.max_wr;
3217 resp.wqn = wq->wq_num;
3218 resp.response_length = required_resp_len;
3219 err = ib_copy_to_udata(ucore,
3220 &resp, resp.response_length);
3221 if (err)
3222 goto err_copy;
3223
3224 uobj_put_obj_read(pd);
3225 uobj_put_obj_read(cq);
3226 uobj_alloc_commit(&obj->uevent.uobject);
3227 return 0;
3228
3229err_copy:
3230 ib_destroy_wq(wq);
3231err_put_cq:
3232 uobj_put_obj_read(cq);
3233err_put_pd:
3234 uobj_put_obj_read(pd);
3235err_uobj:
3236 uobj_alloc_abort(&obj->uevent.uobject);
3237
3238 return err;
3239}
3240
3241int ib_uverbs_ex_destroy_wq(struct ib_uverbs_file *file,
3242 struct ib_device *ib_dev,
3243 struct ib_udata *ucore,
3244 struct ib_udata *uhw)
3245{
3246 struct ib_uverbs_ex_destroy_wq cmd = {};
3247 struct ib_uverbs_ex_destroy_wq_resp resp = {};
3248 struct ib_uobject *uobj;
3249 struct ib_uwq_object *obj;
3250 size_t required_cmd_sz;
3251 size_t required_resp_len;
3252 int ret;
3253
3254 required_cmd_sz = offsetof(typeof(cmd), wq_handle) + sizeof(cmd.wq_handle);
3255 required_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
3256
3257 if (ucore->inlen < required_cmd_sz)
3258 return -EINVAL;
3259
3260 if (ucore->outlen < required_resp_len)
3261 return -ENOSPC;
3262
3263 if (ucore->inlen > sizeof(cmd) &&
3264 !ib_is_udata_cleared(ucore, sizeof(cmd),
3265 ucore->inlen - sizeof(cmd)))
3266 return -EOPNOTSUPP;
3267
3268 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3269 if (ret)
3270 return ret;
3271
3272 if (cmd.comp_mask)
3273 return -EOPNOTSUPP;
3274
3275 resp.response_length = required_resp_len;
3276 uobj = uobj_get_write(UVERBS_OBJECT_WQ, cmd.wq_handle,
3277 file->ucontext);
3278 if (IS_ERR(uobj))
3279 return PTR_ERR(uobj);
3280
3281 obj = container_of(uobj, struct ib_uwq_object, uevent.uobject);
3282
3283
3284
3285
3286 uverbs_uobject_get(uobj);
3287
3288 ret = uobj_remove_commit(uobj);
3289 resp.events_reported = obj->uevent.events_reported;
3290 uverbs_uobject_put(uobj);
3291 if (ret)
3292 return ret;
3293
3294 return ib_copy_to_udata(ucore, &resp, resp.response_length);
3295}
3296
3297int ib_uverbs_ex_modify_wq(struct ib_uverbs_file *file,
3298 struct ib_device *ib_dev,
3299 struct ib_udata *ucore,
3300 struct ib_udata *uhw)
3301{
3302 struct ib_uverbs_ex_modify_wq cmd = {};
3303 struct ib_wq *wq;
3304 struct ib_wq_attr wq_attr = {};
3305 size_t required_cmd_sz;
3306 int ret;
3307
3308 required_cmd_sz = offsetof(typeof(cmd), curr_wq_state) + sizeof(cmd.curr_wq_state);
3309 if (ucore->inlen < required_cmd_sz)
3310 return -EINVAL;
3311
3312 if (ucore->inlen > sizeof(cmd) &&
3313 !ib_is_udata_cleared(ucore, sizeof(cmd),
3314 ucore->inlen - sizeof(cmd)))
3315 return -EOPNOTSUPP;
3316
3317 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3318 if (ret)
3319 return ret;
3320
3321 if (!cmd.attr_mask)
3322 return -EINVAL;
3323
3324 if (cmd.attr_mask > (IB_WQ_STATE | IB_WQ_CUR_STATE | IB_WQ_FLAGS))
3325 return -EINVAL;
3326
3327 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, cmd.wq_handle, file->ucontext);
3328 if (!wq)
3329 return -EINVAL;
3330
3331 wq_attr.curr_wq_state = cmd.curr_wq_state;
3332 wq_attr.wq_state = cmd.wq_state;
3333 if (cmd.attr_mask & IB_WQ_FLAGS) {
3334 wq_attr.flags = cmd.flags;
3335 wq_attr.flags_mask = cmd.flags_mask;
3336 }
3337 if (!wq->device->modify_wq) {
3338 ret = -EOPNOTSUPP;
3339 goto out;
3340 }
3341 ret = wq->device->modify_wq(wq, &wq_attr, cmd.attr_mask, uhw);
3342out:
3343 uobj_put_obj_read(wq);
3344 return ret;
3345}
3346
3347int ib_uverbs_ex_create_rwq_ind_table(struct ib_uverbs_file *file,
3348 struct ib_device *ib_dev,
3349 struct ib_udata *ucore,
3350 struct ib_udata *uhw)
3351{
3352 struct ib_uverbs_ex_create_rwq_ind_table cmd = {};
3353 struct ib_uverbs_ex_create_rwq_ind_table_resp resp = {};
3354 struct ib_uobject *uobj;
3355 int err = 0;
3356 struct ib_rwq_ind_table_init_attr init_attr = {};
3357 struct ib_rwq_ind_table *rwq_ind_tbl;
3358 struct ib_wq **wqs = NULL;
3359 u32 *wqs_handles = NULL;
3360 struct ib_wq *wq = NULL;
3361 int i, j, num_read_wqs;
3362 u32 num_wq_handles;
3363 u32 expected_in_size;
3364 size_t required_cmd_sz_header;
3365 size_t required_resp_len;
3366
3367 required_cmd_sz_header = offsetof(typeof(cmd), log_ind_tbl_size) + sizeof(cmd.log_ind_tbl_size);
3368 required_resp_len = offsetof(typeof(resp), ind_tbl_num) + sizeof(resp.ind_tbl_num);
3369
3370 if (ucore->inlen < required_cmd_sz_header)
3371 return -EINVAL;
3372
3373 if (ucore->outlen < required_resp_len)
3374 return -ENOSPC;
3375
3376 err = ib_copy_from_udata(&cmd, ucore, required_cmd_sz_header);
3377 if (err)
3378 return err;
3379
3380 ucore->inbuf += required_cmd_sz_header;
3381 ucore->inlen -= required_cmd_sz_header;
3382
3383 if (cmd.comp_mask)
3384 return -EOPNOTSUPP;
3385
3386 if (cmd.log_ind_tbl_size > IB_USER_VERBS_MAX_LOG_IND_TBL_SIZE)
3387 return -EINVAL;
3388
3389 num_wq_handles = 1 << cmd.log_ind_tbl_size;
3390 expected_in_size = num_wq_handles * sizeof(__u32);
3391 if (num_wq_handles == 1)
3392
3393 expected_in_size += sizeof(__u32);
3394
3395 if (ucore->inlen < expected_in_size)
3396 return -EINVAL;
3397
3398 if (ucore->inlen > expected_in_size &&
3399 !ib_is_udata_cleared(ucore, expected_in_size,
3400 ucore->inlen - expected_in_size))
3401 return -EOPNOTSUPP;
3402
3403 wqs_handles = kcalloc(num_wq_handles, sizeof(*wqs_handles),
3404 GFP_KERNEL);
3405 if (!wqs_handles)
3406 return -ENOMEM;
3407
3408 err = ib_copy_from_udata(wqs_handles, ucore,
3409 num_wq_handles * sizeof(__u32));
3410 if (err)
3411 goto err_free;
3412
3413 wqs = kcalloc(num_wq_handles, sizeof(*wqs), GFP_KERNEL);
3414 if (!wqs) {
3415 err = -ENOMEM;
3416 goto err_free;
3417 }
3418
3419 for (num_read_wqs = 0; num_read_wqs < num_wq_handles;
3420 num_read_wqs++) {
3421 wq = uobj_get_obj_read(wq, UVERBS_OBJECT_WQ, wqs_handles[num_read_wqs],
3422 file->ucontext);
3423 if (!wq) {
3424 err = -EINVAL;
3425 goto put_wqs;
3426 }
3427
3428 wqs[num_read_wqs] = wq;
3429 }
3430
3431 uobj = uobj_alloc(UVERBS_OBJECT_RWQ_IND_TBL, file->ucontext);
3432 if (IS_ERR(uobj)) {
3433 err = PTR_ERR(uobj);
3434 goto put_wqs;
3435 }
3436
3437 init_attr.log_ind_tbl_size = cmd.log_ind_tbl_size;
3438 init_attr.ind_tbl = wqs;
3439
3440 if (!ib_dev->create_rwq_ind_table) {
3441 err = -EOPNOTSUPP;
3442 goto err_uobj;
3443 }
3444 rwq_ind_tbl = ib_dev->create_rwq_ind_table(ib_dev, &init_attr, uhw);
3445
3446 if (IS_ERR(rwq_ind_tbl)) {
3447 err = PTR_ERR(rwq_ind_tbl);
3448 goto err_uobj;
3449 }
3450
3451 rwq_ind_tbl->ind_tbl = wqs;
3452 rwq_ind_tbl->log_ind_tbl_size = init_attr.log_ind_tbl_size;
3453 rwq_ind_tbl->uobject = uobj;
3454 uobj->object = rwq_ind_tbl;
3455 rwq_ind_tbl->device = ib_dev;
3456 atomic_set(&rwq_ind_tbl->usecnt, 0);
3457
3458 for (i = 0; i < num_wq_handles; i++)
3459 atomic_inc(&wqs[i]->usecnt);
3460
3461 resp.ind_tbl_handle = uobj->id;
3462 resp.ind_tbl_num = rwq_ind_tbl->ind_tbl_num;
3463 resp.response_length = required_resp_len;
3464
3465 err = ib_copy_to_udata(ucore,
3466 &resp, resp.response_length);
3467 if (err)
3468 goto err_copy;
3469
3470 kfree(wqs_handles);
3471
3472 for (j = 0; j < num_read_wqs; j++)
3473 uobj_put_obj_read(wqs[j]);
3474
3475 uobj_alloc_commit(uobj);
3476 return 0;
3477
3478err_copy:
3479 ib_destroy_rwq_ind_table(rwq_ind_tbl);
3480err_uobj:
3481 uobj_alloc_abort(uobj);
3482put_wqs:
3483 for (j = 0; j < num_read_wqs; j++)
3484 uobj_put_obj_read(wqs[j]);
3485err_free:
3486 kfree(wqs_handles);
3487 kfree(wqs);
3488 return err;
3489}
3490
3491int ib_uverbs_ex_destroy_rwq_ind_table(struct ib_uverbs_file *file,
3492 struct ib_device *ib_dev,
3493 struct ib_udata *ucore,
3494 struct ib_udata *uhw)
3495{
3496 struct ib_uverbs_ex_destroy_rwq_ind_table cmd = {};
3497 struct ib_uobject *uobj;
3498 int ret;
3499 size_t required_cmd_sz;
3500
3501 required_cmd_sz = offsetof(typeof(cmd), ind_tbl_handle) + sizeof(cmd.ind_tbl_handle);
3502
3503 if (ucore->inlen < required_cmd_sz)
3504 return -EINVAL;
3505
3506 if (ucore->inlen > sizeof(cmd) &&
3507 !ib_is_udata_cleared(ucore, sizeof(cmd),
3508 ucore->inlen - sizeof(cmd)))
3509 return -EOPNOTSUPP;
3510
3511 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
3512 if (ret)
3513 return ret;
3514
3515 if (cmd.comp_mask)
3516 return -EOPNOTSUPP;
3517
3518 uobj = uobj_get_write(UVERBS_OBJECT_RWQ_IND_TBL, cmd.ind_tbl_handle,
3519 file->ucontext);
3520 if (IS_ERR(uobj))
3521 return PTR_ERR(uobj);
3522
3523 return uobj_remove_commit(uobj);
3524}
3525
3526int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
3527 struct ib_device *ib_dev,
3528 struct ib_udata *ucore,
3529 struct ib_udata *uhw)
3530{
3531 struct ib_uverbs_create_flow cmd;
3532 struct ib_uverbs_create_flow_resp resp;
3533 struct ib_uobject *uobj;
3534 struct ib_uflow_object *uflow;
3535 struct ib_flow *flow_id;
3536 struct ib_uverbs_flow_attr *kern_flow_attr;
3537 struct ib_flow_attr *flow_attr;
3538 struct ib_qp *qp;
3539 struct ib_uflow_resources *uflow_res;
3540 struct ib_uverbs_flow_spec_hdr *kern_spec;
3541 int err = 0;
3542 void *ib_spec;
3543 int i;
3544
3545 if (ucore->inlen < sizeof(cmd))
3546 return -EINVAL;
3547
3548 if (ucore->outlen < sizeof(resp))
3549 return -ENOSPC;
3550
3551 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3552 if (err)
3553 return err;
3554
3555 ucore->inbuf += sizeof(cmd);
3556 ucore->inlen -= sizeof(cmd);
3557
3558 if (cmd.comp_mask)
3559 return -EINVAL;
3560
3561 if (!capable(CAP_NET_RAW))
3562 return -EPERM;
3563
3564 if (cmd.flow_attr.flags >= IB_FLOW_ATTR_FLAGS_RESERVED)
3565 return -EINVAL;
3566
3567 if ((cmd.flow_attr.flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
3568 ((cmd.flow_attr.type == IB_FLOW_ATTR_ALL_DEFAULT) ||
3569 (cmd.flow_attr.type == IB_FLOW_ATTR_MC_DEFAULT)))
3570 return -EINVAL;
3571
3572 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3573 return -EINVAL;
3574
3575 if (cmd.flow_attr.size > ucore->inlen ||
3576 cmd.flow_attr.size >
3577 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3578 return -EINVAL;
3579
3580 if (cmd.flow_attr.reserved[0] ||
3581 cmd.flow_attr.reserved[1])
3582 return -EINVAL;
3583
3584 if (cmd.flow_attr.num_of_specs) {
3585 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3586 GFP_KERNEL);
3587 if (!kern_flow_attr)
3588 return -ENOMEM;
3589
3590 *kern_flow_attr = cmd.flow_attr;
3591 err = ib_copy_from_udata(&kern_flow_attr->flow_specs, ucore,
3592 cmd.flow_attr.size);
3593 if (err)
3594 goto err_free_attr;
3595 } else {
3596 kern_flow_attr = &cmd.flow_attr;
3597 }
3598
3599 uobj = uobj_alloc(UVERBS_OBJECT_FLOW, file->ucontext);
3600 if (IS_ERR(uobj)) {
3601 err = PTR_ERR(uobj);
3602 goto err_free_attr;
3603 }
3604
3605 qp = uobj_get_obj_read(qp, UVERBS_OBJECT_QP, cmd.qp_handle, file->ucontext);
3606 if (!qp) {
3607 err = -EINVAL;
3608 goto err_uobj;
3609 }
3610
3611 if (qp->qp_type != IB_QPT_UD && qp->qp_type != IB_QPT_RAW_PACKET) {
3612 err = -EINVAL;
3613 goto err_put;
3614 }
3615
3616 flow_attr = kzalloc(struct_size(flow_attr, flows,
3617 cmd.flow_attr.num_of_specs), GFP_KERNEL);
3618 if (!flow_attr) {
3619 err = -ENOMEM;
3620 goto err_put;
3621 }
3622 uflow_res = flow_resources_alloc(cmd.flow_attr.num_of_specs);
3623 if (!uflow_res) {
3624 err = -ENOMEM;
3625 goto err_free_flow_attr;
3626 }
3627
3628 flow_attr->type = kern_flow_attr->type;
3629 flow_attr->priority = kern_flow_attr->priority;
3630 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3631 flow_attr->port = kern_flow_attr->port;
3632 flow_attr->flags = kern_flow_attr->flags;
3633 flow_attr->size = sizeof(*flow_attr);
3634
3635 kern_spec = kern_flow_attr->flow_specs;
3636 ib_spec = flow_attr + 1;
3637 for (i = 0; i < flow_attr->num_of_specs &&
3638 cmd.flow_attr.size >= sizeof(*kern_spec) &&
3639 cmd.flow_attr.size >= kern_spec->size;
3640 i++) {
3641 err = kern_spec_to_ib_spec(
3642 file->ucontext, (struct ib_uverbs_flow_spec *)kern_spec,
3643 ib_spec, uflow_res);
3644 if (err)
3645 goto err_free;
3646
3647 flow_attr->size +=
3648 ((union ib_flow_spec *) ib_spec)->size;
3649 cmd.flow_attr.size -= kern_spec->size;
3650 kern_spec = ((void *)kern_spec) + kern_spec->size;
3651 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3652 }
3653 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3654 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
3655 i, cmd.flow_attr.size);
3656 err = -EINVAL;
3657 goto err_free;
3658 }
3659
3660 flow_id = qp->device->create_flow(qp, flow_attr,
3661 IB_FLOW_DOMAIN_USER, uhw);
3662
3663 if (IS_ERR(flow_id)) {
3664 err = PTR_ERR(flow_id);
3665 goto err_free;
3666 }
3667 atomic_inc(&qp->usecnt);
3668 flow_id->qp = qp;
3669 flow_id->uobject = uobj;
3670 uobj->object = flow_id;
3671 uflow = container_of(uobj, typeof(*uflow), uobject);
3672 uflow->resources = uflow_res;
3673
3674 memset(&resp, 0, sizeof(resp));
3675 resp.flow_handle = uobj->id;
3676
3677 err = ib_copy_to_udata(ucore,
3678 &resp, sizeof(resp));
3679 if (err)
3680 goto err_copy;
3681
3682 uobj_put_obj_read(qp);
3683 uobj_alloc_commit(uobj);
3684 kfree(flow_attr);
3685 if (cmd.flow_attr.num_of_specs)
3686 kfree(kern_flow_attr);
3687 return 0;
3688err_copy:
3689 ib_destroy_flow(flow_id);
3690err_free:
3691 ib_uverbs_flow_resources_free(uflow_res);
3692err_free_flow_attr:
3693 kfree(flow_attr);
3694err_put:
3695 uobj_put_obj_read(qp);
3696err_uobj:
3697 uobj_alloc_abort(uobj);
3698err_free_attr:
3699 if (cmd.flow_attr.num_of_specs)
3700 kfree(kern_flow_attr);
3701 return err;
3702}
3703
3704int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file,
3705 struct ib_device *ib_dev,
3706 struct ib_udata *ucore,
3707 struct ib_udata *uhw)
3708{
3709 struct ib_uverbs_destroy_flow cmd;
3710 struct ib_uobject *uobj;
3711 int ret;
3712
3713 if (ucore->inlen < sizeof(cmd))
3714 return -EINVAL;
3715
3716 ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3717 if (ret)
3718 return ret;
3719
3720 if (cmd.comp_mask)
3721 return -EINVAL;
3722
3723 uobj = uobj_get_write(UVERBS_OBJECT_FLOW, cmd.flow_handle,
3724 file->ucontext);
3725 if (IS_ERR(uobj))
3726 return PTR_ERR(uobj);
3727
3728 ret = uobj_remove_commit(uobj);
3729 return ret;
3730}
3731
3732static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
3733 struct ib_device *ib_dev,
3734 struct ib_uverbs_create_xsrq *cmd,
3735 struct ib_udata *udata)
3736{
3737 struct ib_uverbs_create_srq_resp resp;
3738 struct ib_usrq_object *obj;
3739 struct ib_pd *pd;
3740 struct ib_srq *srq;
3741 struct ib_uobject *uninitialized_var(xrcd_uobj);
3742 struct ib_srq_init_attr attr;
3743 int ret;
3744
3745 obj = (struct ib_usrq_object *)uobj_alloc(UVERBS_OBJECT_SRQ,
3746 file->ucontext);
3747 if (IS_ERR(obj))
3748 return PTR_ERR(obj);
3749
3750 if (cmd->srq_type == IB_SRQT_TM)
3751 attr.ext.tag_matching.max_num_tags = cmd->max_num_tags;
3752
3753 if (cmd->srq_type == IB_SRQT_XRC) {
3754 xrcd_uobj = uobj_get_read(UVERBS_OBJECT_XRCD, cmd->xrcd_handle,
3755 file->ucontext);
3756 if (IS_ERR(xrcd_uobj)) {
3757 ret = -EINVAL;
3758 goto err;
3759 }
3760
3761 attr.ext.xrc.xrcd = (struct ib_xrcd *)xrcd_uobj->object;
3762 if (!attr.ext.xrc.xrcd) {
3763 ret = -EINVAL;
3764 goto err_put_xrcd;
3765 }
3766
3767 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3768 atomic_inc(&obj->uxrcd->refcnt);
3769 }
3770
3771 if (ib_srq_has_cq(cmd->srq_type)) {
3772 attr.ext.cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd->cq_handle,
3773 file->ucontext);
3774 if (!attr.ext.cq) {
3775 ret = -EINVAL;
3776 goto err_put_xrcd;
3777 }
3778 }
3779
3780 pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd->pd_handle, file->ucontext);
3781 if (!pd) {
3782 ret = -EINVAL;
3783 goto err_put_cq;
3784 }
3785
3786 attr.event_handler = ib_uverbs_srq_event_handler;
3787 attr.srq_context = file;
3788 attr.srq_type = cmd->srq_type;
3789 attr.attr.max_wr = cmd->max_wr;
3790 attr.attr.max_sge = cmd->max_sge;
3791 attr.attr.srq_limit = cmd->srq_limit;
3792
3793 obj->uevent.events_reported = 0;
3794 INIT_LIST_HEAD(&obj->uevent.event_list);
3795
3796 srq = pd->device->create_srq(pd, &attr, udata);
3797 if (IS_ERR(srq)) {
3798 ret = PTR_ERR(srq);
3799 goto err_put;
3800 }
3801
3802 srq->device = pd->device;
3803 srq->pd = pd;
3804 srq->srq_type = cmd->srq_type;
3805 srq->uobject = &obj->uevent.uobject;
3806 srq->event_handler = attr.event_handler;
3807 srq->srq_context = attr.srq_context;
3808
3809 if (ib_srq_has_cq(cmd->srq_type)) {
3810 srq->ext.cq = attr.ext.cq;
3811 atomic_inc(&attr.ext.cq->usecnt);
3812 }
3813
3814 if (cmd->srq_type == IB_SRQT_XRC) {
3815 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
3816 atomic_inc(&attr.ext.xrc.xrcd->usecnt);
3817 }
3818
3819 atomic_inc(&pd->usecnt);
3820 atomic_set(&srq->usecnt, 0);
3821
3822 obj->uevent.uobject.object = srq;
3823 obj->uevent.uobject.user_handle = cmd->user_handle;
3824
3825 memset(&resp, 0, sizeof resp);
3826 resp.srq_handle = obj->uevent.uobject.id;
3827 resp.max_wr = attr.attr.max_wr;
3828 resp.max_sge = attr.attr.max_sge;
3829 if (cmd->srq_type == IB_SRQT_XRC)
3830 resp.srqn = srq->ext.xrc.srq_num;
3831
3832 if (copy_to_user(u64_to_user_ptr(cmd->response),
3833 &resp, sizeof resp)) {
3834 ret = -EFAULT;
3835 goto err_copy;
3836 }
3837
3838 if (cmd->srq_type == IB_SRQT_XRC)
3839 uobj_put_read(xrcd_uobj);
3840
3841 if (ib_srq_has_cq(cmd->srq_type))
3842 uobj_put_obj_read(attr.ext.cq);
3843
3844 uobj_put_obj_read(pd);
3845 uobj_alloc_commit(&obj->uevent.uobject);
3846
3847 return 0;
3848
3849err_copy:
3850 ib_destroy_srq(srq);
3851
3852err_put:
3853 uobj_put_obj_read(pd);
3854
3855err_put_cq:
3856 if (ib_srq_has_cq(cmd->srq_type))
3857 uobj_put_obj_read(attr.ext.cq);
3858
3859err_put_xrcd:
3860 if (cmd->srq_type == IB_SRQT_XRC) {
3861 atomic_dec(&obj->uxrcd->refcnt);
3862 uobj_put_read(xrcd_uobj);
3863 }
3864
3865err:
3866 uobj_alloc_abort(&obj->uevent.uobject);
3867 return ret;
3868}
3869
3870ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
3871 struct ib_device *ib_dev,
3872 const char __user *buf, int in_len,
3873 int out_len)
3874{
3875 struct ib_uverbs_create_srq cmd;
3876 struct ib_uverbs_create_xsrq xcmd;
3877 struct ib_uverbs_create_srq_resp resp;
3878 struct ib_udata udata;
3879 int ret;
3880
3881 if (out_len < sizeof resp)
3882 return -ENOSPC;
3883
3884 if (copy_from_user(&cmd, buf, sizeof cmd))
3885 return -EFAULT;
3886
3887 memset(&xcmd, 0, sizeof(xcmd));
3888 xcmd.response = cmd.response;
3889 xcmd.user_handle = cmd.user_handle;
3890 xcmd.srq_type = IB_SRQT_BASIC;
3891 xcmd.pd_handle = cmd.pd_handle;
3892 xcmd.max_wr = cmd.max_wr;
3893 xcmd.max_sge = cmd.max_sge;
3894 xcmd.srq_limit = cmd.srq_limit;
3895
3896 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
3897 u64_to_user_ptr(cmd.response) + sizeof(resp),
3898 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
3899 out_len - sizeof(resp));
3900
3901 ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata);
3902 if (ret)
3903 return ret;
3904
3905 return in_len;
3906}
3907
3908ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file,
3909 struct ib_device *ib_dev,
3910 const char __user *buf, int in_len, int out_len)
3911{
3912 struct ib_uverbs_create_xsrq cmd;
3913 struct ib_uverbs_create_srq_resp resp;
3914 struct ib_udata udata;
3915 int ret;
3916
3917 if (out_len < sizeof resp)
3918 return -ENOSPC;
3919
3920 if (copy_from_user(&cmd, buf, sizeof cmd))
3921 return -EFAULT;
3922
3923 ib_uverbs_init_udata(&udata, buf + sizeof(cmd),
3924 u64_to_user_ptr(cmd.response) + sizeof(resp),
3925 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
3926 out_len - sizeof(resp));
3927
3928 ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata);
3929 if (ret)
3930 return ret;
3931
3932 return in_len;
3933}
3934
3935ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
3936 struct ib_device *ib_dev,
3937 const char __user *buf, int in_len,
3938 int out_len)
3939{
3940 struct ib_uverbs_modify_srq cmd;
3941 struct ib_udata udata;
3942 struct ib_srq *srq;
3943 struct ib_srq_attr attr;
3944 int ret;
3945
3946 if (copy_from_user(&cmd, buf, sizeof cmd))
3947 return -EFAULT;
3948
3949 ib_uverbs_init_udata(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
3950 out_len);
3951
3952 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, file->ucontext);
3953 if (!srq)
3954 return -EINVAL;
3955
3956 attr.max_wr = cmd.max_wr;
3957 attr.srq_limit = cmd.srq_limit;
3958
3959 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata);
3960
3961 uobj_put_obj_read(srq);
3962
3963 return ret ? ret : in_len;
3964}
3965
3966ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
3967 struct ib_device *ib_dev,
3968 const char __user *buf,
3969 int in_len, int out_len)
3970{
3971 struct ib_uverbs_query_srq cmd;
3972 struct ib_uverbs_query_srq_resp resp;
3973 struct ib_srq_attr attr;
3974 struct ib_srq *srq;
3975 int ret;
3976
3977 if (out_len < sizeof resp)
3978 return -ENOSPC;
3979
3980 if (copy_from_user(&cmd, buf, sizeof cmd))
3981 return -EFAULT;
3982
3983 srq = uobj_get_obj_read(srq, UVERBS_OBJECT_SRQ, cmd.srq_handle, file->ucontext);
3984 if (!srq)
3985 return -EINVAL;
3986
3987 ret = ib_query_srq(srq, &attr);
3988
3989 uobj_put_obj_read(srq);
3990
3991 if (ret)
3992 return ret;
3993
3994 memset(&resp, 0, sizeof resp);
3995
3996 resp.max_wr = attr.max_wr;
3997 resp.max_sge = attr.max_sge;
3998 resp.srq_limit = attr.srq_limit;
3999
4000 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof resp))
4001 return -EFAULT;
4002
4003 return in_len;
4004}
4005
4006ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
4007 struct ib_device *ib_dev,
4008 const char __user *buf, int in_len,
4009 int out_len)
4010{
4011 struct ib_uverbs_destroy_srq cmd;
4012 struct ib_uverbs_destroy_srq_resp resp;
4013 struct ib_uobject *uobj;
4014 struct ib_uevent_object *obj;
4015 int ret = -EINVAL;
4016
4017 if (copy_from_user(&cmd, buf, sizeof cmd))
4018 return -EFAULT;
4019
4020 uobj = uobj_get_write(UVERBS_OBJECT_SRQ, cmd.srq_handle,
4021 file->ucontext);
4022 if (IS_ERR(uobj))
4023 return PTR_ERR(uobj);
4024
4025 obj = container_of(uobj, struct ib_uevent_object, uobject);
4026
4027
4028
4029
4030 uverbs_uobject_get(uobj);
4031
4032 memset(&resp, 0, sizeof(resp));
4033
4034 ret = uobj_remove_commit(uobj);
4035 if (ret) {
4036 uverbs_uobject_put(uobj);
4037 return ret;
4038 }
4039 resp.events_reported = obj->events_reported;
4040 uverbs_uobject_put(uobj);
4041 if (copy_to_user(u64_to_user_ptr(cmd.response), &resp, sizeof(resp)))
4042 return -EFAULT;
4043
4044 return in_len;
4045}
4046
4047int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
4048 struct ib_device *ib_dev,
4049 struct ib_udata *ucore,
4050 struct ib_udata *uhw)
4051{
4052 struct ib_uverbs_ex_query_device_resp resp = { {0} };
4053 struct ib_uverbs_ex_query_device cmd;
4054 struct ib_device_attr attr = {0};
4055 int err;
4056
4057 if (!ib_dev->query_device)
4058 return -EOPNOTSUPP;
4059
4060 if (ucore->inlen < sizeof(cmd))
4061 return -EINVAL;
4062
4063 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
4064 if (err)
4065 return err;
4066
4067 if (cmd.comp_mask)
4068 return -EINVAL;
4069
4070 if (cmd.reserved)
4071 return -EINVAL;
4072
4073 resp.response_length = offsetof(typeof(resp), odp_caps);
4074
4075 if (ucore->outlen < resp.response_length)
4076 return -ENOSPC;
4077
4078 err = ib_dev->query_device(ib_dev, &attr, uhw);
4079 if (err)
4080 return err;
4081
4082 copy_query_dev_fields(file, ib_dev, &resp.base, &attr);
4083
4084 if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps))
4085 goto end;
4086
4087#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
4088 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
4089 resp.odp_caps.per_transport_caps.rc_odp_caps =
4090 attr.odp_caps.per_transport_caps.rc_odp_caps;
4091 resp.odp_caps.per_transport_caps.uc_odp_caps =
4092 attr.odp_caps.per_transport_caps.uc_odp_caps;
4093 resp.odp_caps.per_transport_caps.ud_odp_caps =
4094 attr.odp_caps.per_transport_caps.ud_odp_caps;
4095#endif
4096 resp.response_length += sizeof(resp.odp_caps);
4097
4098 if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask))
4099 goto end;
4100
4101 resp.timestamp_mask = attr.timestamp_mask;
4102 resp.response_length += sizeof(resp.timestamp_mask);
4103
4104 if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock))
4105 goto end;
4106
4107 resp.hca_core_clock = attr.hca_core_clock;
4108 resp.response_length += sizeof(resp.hca_core_clock);
4109
4110 if (ucore->outlen < resp.response_length + sizeof(resp.device_cap_flags_ex))
4111 goto end;
4112
4113 resp.device_cap_flags_ex = attr.device_cap_flags;
4114 resp.response_length += sizeof(resp.device_cap_flags_ex);
4115
4116 if (ucore->outlen < resp.response_length + sizeof(resp.rss_caps))
4117 goto end;
4118
4119 resp.rss_caps.supported_qpts = attr.rss_caps.supported_qpts;
4120 resp.rss_caps.max_rwq_indirection_tables =
4121 attr.rss_caps.max_rwq_indirection_tables;
4122 resp.rss_caps.max_rwq_indirection_table_size =
4123 attr.rss_caps.max_rwq_indirection_table_size;
4124
4125 resp.response_length += sizeof(resp.rss_caps);
4126
4127 if (ucore->outlen < resp.response_length + sizeof(resp.max_wq_type_rq))
4128 goto end;
4129
4130 resp.max_wq_type_rq = attr.max_wq_type_rq;
4131 resp.response_length += sizeof(resp.max_wq_type_rq);
4132
4133 if (ucore->outlen < resp.response_length + sizeof(resp.raw_packet_caps))
4134 goto end;
4135
4136 resp.raw_packet_caps = attr.raw_packet_caps;
4137 resp.response_length += sizeof(resp.raw_packet_caps);
4138
4139 if (ucore->outlen < resp.response_length + sizeof(resp.tm_caps))
4140 goto end;
4141
4142 resp.tm_caps.max_rndv_hdr_size = attr.tm_caps.max_rndv_hdr_size;
4143 resp.tm_caps.max_num_tags = attr.tm_caps.max_num_tags;
4144 resp.tm_caps.max_ops = attr.tm_caps.max_ops;
4145 resp.tm_caps.max_sge = attr.tm_caps.max_sge;
4146 resp.tm_caps.flags = attr.tm_caps.flags;
4147 resp.response_length += sizeof(resp.tm_caps);
4148
4149 if (ucore->outlen < resp.response_length + sizeof(resp.cq_moderation_caps))
4150 goto end;
4151
4152 resp.cq_moderation_caps.max_cq_moderation_count =
4153 attr.cq_caps.max_cq_moderation_count;
4154 resp.cq_moderation_caps.max_cq_moderation_period =
4155 attr.cq_caps.max_cq_moderation_period;
4156 resp.response_length += sizeof(resp.cq_moderation_caps);
4157
4158 if (ucore->outlen < resp.response_length + sizeof(resp.max_dm_size))
4159 goto end;
4160
4161 resp.max_dm_size = attr.max_dm_size;
4162 resp.response_length += sizeof(resp.max_dm_size);
4163end:
4164 err = ib_copy_to_udata(ucore, &resp, resp.response_length);
4165 return err;
4166}
4167
4168int ib_uverbs_ex_modify_cq(struct ib_uverbs_file *file,
4169 struct ib_device *ib_dev,
4170 struct ib_udata *ucore,
4171 struct ib_udata *uhw)
4172{
4173 struct ib_uverbs_ex_modify_cq cmd = {};
4174 struct ib_cq *cq;
4175 size_t required_cmd_sz;
4176 int ret;
4177
4178 required_cmd_sz = offsetof(typeof(cmd), reserved) +
4179 sizeof(cmd.reserved);
4180 if (ucore->inlen < required_cmd_sz)
4181 return -EINVAL;
4182
4183
4184 if (ucore->inlen > sizeof(cmd) &&
4185 !ib_is_udata_cleared(ucore, sizeof(cmd),
4186 ucore->inlen - sizeof(cmd)))
4187 return -EOPNOTSUPP;
4188
4189 ret = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
4190 if (ret)
4191 return ret;
4192
4193 if (!cmd.attr_mask || cmd.reserved)
4194 return -EINVAL;
4195
4196 if (cmd.attr_mask > IB_CQ_MODERATE)
4197 return -EOPNOTSUPP;
4198
4199 cq = uobj_get_obj_read(cq, UVERBS_OBJECT_CQ, cmd.cq_handle, file->ucontext);
4200 if (!cq)
4201 return -EINVAL;
4202
4203 ret = rdma_set_cq_moderation(cq, cmd.attr.cq_count, cmd.attr.cq_period);
4204
4205 uobj_put_obj_read(cq);
4206
4207 return ret;
4208}
4209
