2 * Copyright (c) 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
4 * Copyright (c) 2005 PathScale, Inc. All rights reserved.
5 * Copyright (c) 2006 Mellanox Technologies. All rights reserved.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include <linux/file.h>
38 #include <linux/slab.h>
40 #include <asm/uaccess.h>
44 struct uverbs_lock_class
{
45 struct lock_class_key key
;
49 static struct uverbs_lock_class pd_lock_class
= { .name
= "PD-uobj" };
50 static struct uverbs_lock_class mr_lock_class
= { .name
= "MR-uobj" };
51 static struct uverbs_lock_class cq_lock_class
= { .name
= "CQ-uobj" };
52 static struct uverbs_lock_class qp_lock_class
= { .name
= "QP-uobj" };
53 static struct uverbs_lock_class ah_lock_class
= { .name
= "AH-uobj" };
54 static struct uverbs_lock_class srq_lock_class
= { .name
= "SRQ-uobj" };
55 static struct uverbs_lock_class xrcd_lock_class
= { .name
= "XRCD-uobj" };
57 #define INIT_UDATA(udata, ibuf, obuf, ilen, olen) \
59 (udata)->inbuf = (void __user *) (ibuf); \
60 (udata)->outbuf = (void __user *) (obuf); \
61 (udata)->inlen = (ilen); \
62 (udata)->outlen = (olen); \
66 * The ib_uobject locking scheme is as follows:
68 * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it
69 * needs to be held during all idr operations. When an object is
70 * looked up, a reference must be taken on the object's kref before
73 * - Each object also has an rwsem. This rwsem must be held for
74 * reading while an operation that uses the object is performed.
75 * For example, while registering an MR, the associated PD's
76 * uobject.mutex must be held for reading. The rwsem must be held
77 * for writing while initializing or destroying an object.
79 * - In addition, each object has a "live" flag. If this flag is not
80 * set, then lookups of the object will fail even if it is found in
81 * the idr. This handles a reader that blocks and does not acquire
82 * the rwsem until after the object is destroyed. The destroy
83 * operation will set the live flag to 0 and then drop the rwsem;
84 * this will allow the reader to acquire the rwsem, see that the
85 * live flag is 0, and then drop the rwsem and its reference to
86 * object. The underlying storage will not be freed until the last
87 * reference to the object is dropped.
90 static void init_uobj(struct ib_uobject
*uobj
, u64 user_handle
,
91 struct ib_ucontext
*context
, struct uverbs_lock_class
*c
)
93 uobj
->user_handle
= user_handle
;
94 uobj
->context
= context
;
95 kref_init(&uobj
->ref
);
96 init_rwsem(&uobj
->mutex
);
97 lockdep_set_class_and_name(&uobj
->mutex
, &c
->key
, c
->name
);
101 static void release_uobj(struct kref
*kref
)
103 kfree(container_of(kref
, struct ib_uobject
, ref
));
106 static void put_uobj(struct ib_uobject
*uobj
)
108 kref_put(&uobj
->ref
, release_uobj
);
111 static void put_uobj_read(struct ib_uobject
*uobj
)
113 up_read(&uobj
->mutex
);
117 static void put_uobj_write(struct ib_uobject
*uobj
)
119 up_write(&uobj
->mutex
);
123 static int idr_add_uobj(struct idr
*idr
, struct ib_uobject
*uobj
)
128 if (!idr_pre_get(idr
, GFP_KERNEL
))
131 spin_lock(&ib_uverbs_idr_lock
);
132 ret
= idr_get_new(idr
, uobj
, &uobj
->id
);
133 spin_unlock(&ib_uverbs_idr_lock
);
141 void idr_remove_uobj(struct idr
*idr
, struct ib_uobject
*uobj
)
143 spin_lock(&ib_uverbs_idr_lock
);
144 idr_remove(idr
, uobj
->id
);
145 spin_unlock(&ib_uverbs_idr_lock
);
148 static struct ib_uobject
*__idr_get_uobj(struct idr
*idr
, int id
,
149 struct ib_ucontext
*context
)
151 struct ib_uobject
*uobj
;
153 spin_lock(&ib_uverbs_idr_lock
);
154 uobj
= idr_find(idr
, id
);
156 if (uobj
->context
== context
)
157 kref_get(&uobj
->ref
);
161 spin_unlock(&ib_uverbs_idr_lock
);
166 static struct ib_uobject
*idr_read_uobj(struct idr
*idr
, int id
,
167 struct ib_ucontext
*context
, int nested
)
169 struct ib_uobject
*uobj
;
171 uobj
= __idr_get_uobj(idr
, id
, context
);
176 down_read_nested(&uobj
->mutex
, SINGLE_DEPTH_NESTING
);
178 down_read(&uobj
->mutex
);
187 static struct ib_uobject
*idr_write_uobj(struct idr
*idr
, int id
,
188 struct ib_ucontext
*context
)
190 struct ib_uobject
*uobj
;
192 uobj
= __idr_get_uobj(idr
, id
, context
);
196 down_write(&uobj
->mutex
);
198 put_uobj_write(uobj
);
205 static void *idr_read_obj(struct idr
*idr
, int id
, struct ib_ucontext
*context
,
208 struct ib_uobject
*uobj
;
210 uobj
= idr_read_uobj(idr
, id
, context
, nested
);
211 return uobj
? uobj
->object
: NULL
;
214 static struct ib_pd
*idr_read_pd(int pd_handle
, struct ib_ucontext
*context
)
216 return idr_read_obj(&ib_uverbs_pd_idr
, pd_handle
, context
, 0);
219 static void put_pd_read(struct ib_pd
*pd
)
221 put_uobj_read(pd
->uobject
);
224 static struct ib_cq
*idr_read_cq(int cq_handle
, struct ib_ucontext
*context
, int nested
)
226 return idr_read_obj(&ib_uverbs_cq_idr
, cq_handle
, context
, nested
);
229 static void put_cq_read(struct ib_cq
*cq
)
231 put_uobj_read(cq
->uobject
);
234 static struct ib_ah
*idr_read_ah(int ah_handle
, struct ib_ucontext
*context
)
236 return idr_read_obj(&ib_uverbs_ah_idr
, ah_handle
, context
, 0);
239 static void put_ah_read(struct ib_ah
*ah
)
241 put_uobj_read(ah
->uobject
);
244 static struct ib_qp
*idr_read_qp(int qp_handle
, struct ib_ucontext
*context
)
246 return idr_read_obj(&ib_uverbs_qp_idr
, qp_handle
, context
, 0);
249 static struct ib_qp
*idr_write_qp(int qp_handle
, struct ib_ucontext
*context
)
251 struct ib_uobject
*uobj
;
253 uobj
= idr_write_uobj(&ib_uverbs_qp_idr
, qp_handle
, context
);
254 return uobj
? uobj
->object
: NULL
;
257 static void put_qp_read(struct ib_qp
*qp
)
259 put_uobj_read(qp
->uobject
);
262 static void put_qp_write(struct ib_qp
*qp
)
264 put_uobj_write(qp
->uobject
);
267 static struct ib_srq
*idr_read_srq(int srq_handle
, struct ib_ucontext
*context
)
269 return idr_read_obj(&ib_uverbs_srq_idr
, srq_handle
, context
, 0);
272 static void put_srq_read(struct ib_srq
*srq
)
274 put_uobj_read(srq
->uobject
);
277 static struct ib_xrcd
*idr_read_xrcd(int xrcd_handle
, struct ib_ucontext
*context
,
278 struct ib_uobject
**uobj
)
280 *uobj
= idr_read_uobj(&ib_uverbs_xrcd_idr
, xrcd_handle
, context
, 0);
281 return *uobj
? (*uobj
)->object
: NULL
;
284 static void put_xrcd_read(struct ib_uobject
*uobj
)
289 ssize_t
ib_uverbs_get_context(struct ib_uverbs_file
*file
,
290 const char __user
*buf
,
291 int in_len
, int out_len
)
293 struct ib_uverbs_get_context cmd
;
294 struct ib_uverbs_get_context_resp resp
;
295 struct ib_udata udata
;
296 struct ib_device
*ibdev
= file
->device
->ib_dev
;
297 struct ib_ucontext
*ucontext
;
301 if (out_len
< sizeof resp
)
304 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
307 mutex_lock(&file
->mutex
);
309 if (file
->ucontext
) {
314 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
315 (unsigned long) cmd
.response
+ sizeof resp
,
316 in_len
- sizeof cmd
, out_len
- sizeof resp
);
318 ucontext
= ibdev
->alloc_ucontext(ibdev
, &udata
);
319 if (IS_ERR(ucontext
)) {
320 ret
= PTR_ERR(ucontext
);
324 ucontext
->device
= ibdev
;
325 INIT_LIST_HEAD(&ucontext
->pd_list
);
326 INIT_LIST_HEAD(&ucontext
->mr_list
);
327 INIT_LIST_HEAD(&ucontext
->mw_list
);
328 INIT_LIST_HEAD(&ucontext
->cq_list
);
329 INIT_LIST_HEAD(&ucontext
->qp_list
);
330 INIT_LIST_HEAD(&ucontext
->srq_list
);
331 INIT_LIST_HEAD(&ucontext
->ah_list
);
332 INIT_LIST_HEAD(&ucontext
->xrcd_list
);
333 ucontext
->closing
= 0;
335 resp
.num_comp_vectors
= file
->device
->num_comp_vectors
;
337 ret
= get_unused_fd();
342 filp
= ib_uverbs_alloc_event_file(file
, 1);
348 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
349 &resp
, sizeof resp
)) {
354 file
->async_file
= filp
->private_data
;
356 INIT_IB_EVENT_HANDLER(&file
->event_handler
, file
->device
->ib_dev
,
357 ib_uverbs_event_handler
);
358 ret
= ib_register_event_handler(&file
->event_handler
);
362 kref_get(&file
->async_file
->ref
);
363 kref_get(&file
->ref
);
364 file
->ucontext
= ucontext
;
366 fd_install(resp
.async_fd
, filp
);
368 mutex_unlock(&file
->mutex
);
376 put_unused_fd(resp
.async_fd
);
379 ibdev
->dealloc_ucontext(ucontext
);
382 mutex_unlock(&file
->mutex
);
386 ssize_t
ib_uverbs_query_device(struct ib_uverbs_file
*file
,
387 const char __user
*buf
,
388 int in_len
, int out_len
)
390 struct ib_uverbs_query_device cmd
;
391 struct ib_uverbs_query_device_resp resp
;
392 struct ib_device_attr attr
;
395 if (out_len
< sizeof resp
)
398 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
401 ret
= ib_query_device(file
->device
->ib_dev
, &attr
);
405 memset(&resp
, 0, sizeof resp
);
407 resp
.fw_ver
= attr
.fw_ver
;
408 resp
.node_guid
= file
->device
->ib_dev
->node_guid
;
409 resp
.sys_image_guid
= attr
.sys_image_guid
;
410 resp
.max_mr_size
= attr
.max_mr_size
;
411 resp
.page_size_cap
= attr
.page_size_cap
;
412 resp
.vendor_id
= attr
.vendor_id
;
413 resp
.vendor_part_id
= attr
.vendor_part_id
;
414 resp
.hw_ver
= attr
.hw_ver
;
415 resp
.max_qp
= attr
.max_qp
;
416 resp
.max_qp_wr
= attr
.max_qp_wr
;
417 resp
.device_cap_flags
= attr
.device_cap_flags
;
418 resp
.max_sge
= attr
.max_sge
;
419 resp
.max_sge_rd
= attr
.max_sge_rd
;
420 resp
.max_cq
= attr
.max_cq
;
421 resp
.max_cqe
= attr
.max_cqe
;
422 resp
.max_mr
= attr
.max_mr
;
423 resp
.max_pd
= attr
.max_pd
;
424 resp
.max_qp_rd_atom
= attr
.max_qp_rd_atom
;
425 resp
.max_ee_rd_atom
= attr
.max_ee_rd_atom
;
426 resp
.max_res_rd_atom
= attr
.max_res_rd_atom
;
427 resp
.max_qp_init_rd_atom
= attr
.max_qp_init_rd_atom
;
428 resp
.max_ee_init_rd_atom
= attr
.max_ee_init_rd_atom
;
429 resp
.atomic_cap
= attr
.atomic_cap
;
430 resp
.max_ee
= attr
.max_ee
;
431 resp
.max_rdd
= attr
.max_rdd
;
432 resp
.max_mw
= attr
.max_mw
;
433 resp
.max_raw_ipv6_qp
= attr
.max_raw_ipv6_qp
;
434 resp
.max_raw_ethy_qp
= attr
.max_raw_ethy_qp
;
435 resp
.max_mcast_grp
= attr
.max_mcast_grp
;
436 resp
.max_mcast_qp_attach
= attr
.max_mcast_qp_attach
;
437 resp
.max_total_mcast_qp_attach
= attr
.max_total_mcast_qp_attach
;
438 resp
.max_ah
= attr
.max_ah
;
439 resp
.max_fmr
= attr
.max_fmr
;
440 resp
.max_map_per_fmr
= attr
.max_map_per_fmr
;
441 resp
.max_srq
= attr
.max_srq
;
442 resp
.max_srq_wr
= attr
.max_srq_wr
;
443 resp
.max_srq_sge
= attr
.max_srq_sge
;
444 resp
.max_pkeys
= attr
.max_pkeys
;
445 resp
.local_ca_ack_delay
= attr
.local_ca_ack_delay
;
446 resp
.phys_port_cnt
= file
->device
->ib_dev
->phys_port_cnt
;
448 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
455 ssize_t
ib_uverbs_query_port(struct ib_uverbs_file
*file
,
456 const char __user
*buf
,
457 int in_len
, int out_len
)
459 struct ib_uverbs_query_port cmd
;
460 struct ib_uverbs_query_port_resp resp
;
461 struct ib_port_attr attr
;
464 if (out_len
< sizeof resp
)
467 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
470 ret
= ib_query_port(file
->device
->ib_dev
, cmd
.port_num
, &attr
);
474 memset(&resp
, 0, sizeof resp
);
476 resp
.state
= attr
.state
;
477 resp
.max_mtu
= attr
.max_mtu
;
478 resp
.active_mtu
= attr
.active_mtu
;
479 resp
.gid_tbl_len
= attr
.gid_tbl_len
;
480 resp
.port_cap_flags
= attr
.port_cap_flags
;
481 resp
.max_msg_sz
= attr
.max_msg_sz
;
482 resp
.bad_pkey_cntr
= attr
.bad_pkey_cntr
;
483 resp
.qkey_viol_cntr
= attr
.qkey_viol_cntr
;
484 resp
.pkey_tbl_len
= attr
.pkey_tbl_len
;
486 resp
.sm_lid
= attr
.sm_lid
;
488 resp
.max_vl_num
= attr
.max_vl_num
;
489 resp
.sm_sl
= attr
.sm_sl
;
490 resp
.subnet_timeout
= attr
.subnet_timeout
;
491 resp
.init_type_reply
= attr
.init_type_reply
;
492 resp
.active_width
= attr
.active_width
;
493 resp
.active_speed
= attr
.active_speed
;
494 resp
.phys_state
= attr
.phys_state
;
495 resp
.link_layer
= rdma_port_get_link_layer(file
->device
->ib_dev
,
498 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
505 ssize_t
ib_uverbs_alloc_pd(struct ib_uverbs_file
*file
,
506 const char __user
*buf
,
507 int in_len
, int out_len
)
509 struct ib_uverbs_alloc_pd cmd
;
510 struct ib_uverbs_alloc_pd_resp resp
;
511 struct ib_udata udata
;
512 struct ib_uobject
*uobj
;
516 if (out_len
< sizeof resp
)
519 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
522 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
523 (unsigned long) cmd
.response
+ sizeof resp
,
524 in_len
- sizeof cmd
, out_len
- sizeof resp
);
526 uobj
= kmalloc(sizeof *uobj
, GFP_KERNEL
);
530 init_uobj(uobj
, 0, file
->ucontext
, &pd_lock_class
);
531 down_write(&uobj
->mutex
);
533 pd
= file
->device
->ib_dev
->alloc_pd(file
->device
->ib_dev
,
534 file
->ucontext
, &udata
);
540 pd
->device
= file
->device
->ib_dev
;
542 atomic_set(&pd
->usecnt
, 0);
545 ret
= idr_add_uobj(&ib_uverbs_pd_idr
, uobj
);
549 memset(&resp
, 0, sizeof resp
);
550 resp
.pd_handle
= uobj
->id
;
552 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
553 &resp
, sizeof resp
)) {
558 mutex_lock(&file
->mutex
);
559 list_add_tail(&uobj
->list
, &file
->ucontext
->pd_list
);
560 mutex_unlock(&file
->mutex
);
564 up_write(&uobj
->mutex
);
569 idr_remove_uobj(&ib_uverbs_pd_idr
, uobj
);
575 put_uobj_write(uobj
);
579 ssize_t
ib_uverbs_dealloc_pd(struct ib_uverbs_file
*file
,
580 const char __user
*buf
,
581 int in_len
, int out_len
)
583 struct ib_uverbs_dealloc_pd cmd
;
584 struct ib_uobject
*uobj
;
587 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
590 uobj
= idr_write_uobj(&ib_uverbs_pd_idr
, cmd
.pd_handle
, file
->ucontext
);
594 ret
= ib_dealloc_pd(uobj
->object
);
598 put_uobj_write(uobj
);
603 idr_remove_uobj(&ib_uverbs_pd_idr
, uobj
);
605 mutex_lock(&file
->mutex
);
606 list_del(&uobj
->list
);
607 mutex_unlock(&file
->mutex
);
614 struct xrcd_table_entry
{
616 struct ib_xrcd
*xrcd
;
620 static int xrcd_table_insert(struct ib_uverbs_device
*dev
,
622 struct ib_xrcd
*xrcd
)
624 struct xrcd_table_entry
*entry
, *scan
;
625 struct rb_node
**p
= &dev
->xrcd_tree
.rb_node
;
626 struct rb_node
*parent
= NULL
;
628 entry
= kmalloc(sizeof *entry
, GFP_KERNEL
);
633 entry
->inode
= inode
;
637 scan
= rb_entry(parent
, struct xrcd_table_entry
, node
);
639 if (inode
< scan
->inode
) {
641 } else if (inode
> scan
->inode
) {
649 rb_link_node(&entry
->node
, parent
, p
);
650 rb_insert_color(&entry
->node
, &dev
->xrcd_tree
);
655 static struct xrcd_table_entry
*xrcd_table_search(struct ib_uverbs_device
*dev
,
658 struct xrcd_table_entry
*entry
;
659 struct rb_node
*p
= dev
->xrcd_tree
.rb_node
;
662 entry
= rb_entry(p
, struct xrcd_table_entry
, node
);
664 if (inode
< entry
->inode
)
666 else if (inode
> entry
->inode
)
675 static struct ib_xrcd
*find_xrcd(struct ib_uverbs_device
*dev
, struct inode
*inode
)
677 struct xrcd_table_entry
*entry
;
679 entry
= xrcd_table_search(dev
, inode
);
686 static void xrcd_table_delete(struct ib_uverbs_device
*dev
,
689 struct xrcd_table_entry
*entry
;
691 entry
= xrcd_table_search(dev
, inode
);
694 rb_erase(&entry
->node
, &dev
->xrcd_tree
);
699 ssize_t
ib_uverbs_open_xrcd(struct ib_uverbs_file
*file
,
700 const char __user
*buf
, int in_len
,
703 struct ib_uverbs_open_xrcd cmd
;
704 struct ib_uverbs_open_xrcd_resp resp
;
705 struct ib_udata udata
;
706 struct ib_uxrcd_object
*obj
;
707 struct ib_xrcd
*xrcd
= NULL
;
708 struct fd f
= {NULL
, 0};
709 struct inode
*inode
= NULL
;
713 if (out_len
< sizeof resp
)
716 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
719 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
720 (unsigned long) cmd
.response
+ sizeof resp
,
721 in_len
- sizeof cmd
, out_len
- sizeof resp
);
723 mutex_lock(&file
->device
->xrcd_tree_mutex
);
726 /* search for file descriptor */
730 goto err_tree_mutex_unlock
;
733 inode
= file_inode(f
.file
);
734 xrcd
= find_xrcd(file
->device
, inode
);
735 if (!xrcd
&& !(cmd
.oflags
& O_CREAT
)) {
736 /* no file descriptor. Need CREATE flag */
738 goto err_tree_mutex_unlock
;
741 if (xrcd
&& cmd
.oflags
& O_EXCL
) {
743 goto err_tree_mutex_unlock
;
747 obj
= kmalloc(sizeof *obj
, GFP_KERNEL
);
750 goto err_tree_mutex_unlock
;
753 init_uobj(&obj
->uobject
, 0, file
->ucontext
, &xrcd_lock_class
);
755 down_write(&obj
->uobject
.mutex
);
758 xrcd
= file
->device
->ib_dev
->alloc_xrcd(file
->device
->ib_dev
,
759 file
->ucontext
, &udata
);
766 xrcd
->device
= file
->device
->ib_dev
;
767 atomic_set(&xrcd
->usecnt
, 0);
768 mutex_init(&xrcd
->tgt_qp_mutex
);
769 INIT_LIST_HEAD(&xrcd
->tgt_qp_list
);
773 atomic_set(&obj
->refcnt
, 0);
774 obj
->uobject
.object
= xrcd
;
775 ret
= idr_add_uobj(&ib_uverbs_xrcd_idr
, &obj
->uobject
);
779 memset(&resp
, 0, sizeof resp
);
780 resp
.xrcd_handle
= obj
->uobject
.id
;
784 /* create new inode/xrcd table entry */
785 ret
= xrcd_table_insert(file
->device
, inode
, xrcd
);
787 goto err_insert_xrcd
;
789 atomic_inc(&xrcd
->usecnt
);
792 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
793 &resp
, sizeof resp
)) {
801 mutex_lock(&file
->mutex
);
802 list_add_tail(&obj
->uobject
.list
, &file
->ucontext
->xrcd_list
);
803 mutex_unlock(&file
->mutex
);
805 obj
->uobject
.live
= 1;
806 up_write(&obj
->uobject
.mutex
);
808 mutex_unlock(&file
->device
->xrcd_tree_mutex
);
814 xrcd_table_delete(file
->device
, inode
);
815 atomic_dec(&xrcd
->usecnt
);
819 idr_remove_uobj(&ib_uverbs_xrcd_idr
, &obj
->uobject
);
822 ib_dealloc_xrcd(xrcd
);
825 put_uobj_write(&obj
->uobject
);
827 err_tree_mutex_unlock
:
831 mutex_unlock(&file
->device
->xrcd_tree_mutex
);
836 ssize_t
ib_uverbs_close_xrcd(struct ib_uverbs_file
*file
,
837 const char __user
*buf
, int in_len
,
840 struct ib_uverbs_close_xrcd cmd
;
841 struct ib_uobject
*uobj
;
842 struct ib_xrcd
*xrcd
= NULL
;
843 struct inode
*inode
= NULL
;
844 struct ib_uxrcd_object
*obj
;
848 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
851 mutex_lock(&file
->device
->xrcd_tree_mutex
);
852 uobj
= idr_write_uobj(&ib_uverbs_xrcd_idr
, cmd
.xrcd_handle
, file
->ucontext
);
860 obj
= container_of(uobj
, struct ib_uxrcd_object
, uobject
);
861 if (atomic_read(&obj
->refcnt
)) {
862 put_uobj_write(uobj
);
867 if (!inode
|| atomic_dec_and_test(&xrcd
->usecnt
)) {
868 ret
= ib_dealloc_xrcd(uobj
->object
);
875 atomic_inc(&xrcd
->usecnt
);
877 put_uobj_write(uobj
);
883 xrcd_table_delete(file
->device
, inode
);
885 idr_remove_uobj(&ib_uverbs_xrcd_idr
, uobj
);
886 mutex_lock(&file
->mutex
);
887 list_del(&uobj
->list
);
888 mutex_unlock(&file
->mutex
);
894 mutex_unlock(&file
->device
->xrcd_tree_mutex
);
898 void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device
*dev
,
899 struct ib_xrcd
*xrcd
)
904 if (inode
&& !atomic_dec_and_test(&xrcd
->usecnt
))
907 ib_dealloc_xrcd(xrcd
);
910 xrcd_table_delete(dev
, inode
);
913 ssize_t
ib_uverbs_reg_mr(struct ib_uverbs_file
*file
,
914 const char __user
*buf
, int in_len
,
917 struct ib_uverbs_reg_mr cmd
;
918 struct ib_uverbs_reg_mr_resp resp
;
919 struct ib_udata udata
;
920 struct ib_uobject
*uobj
;
925 if (out_len
< sizeof resp
)
928 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
931 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
932 (unsigned long) cmd
.response
+ sizeof resp
,
933 in_len
- sizeof cmd
, out_len
- sizeof resp
);
935 if ((cmd
.start
& ~PAGE_MASK
) != (cmd
.hca_va
& ~PAGE_MASK
))
939 * Local write permission is required if remote write or
940 * remote atomic permission is also requested.
942 if (cmd
.access_flags
& (IB_ACCESS_REMOTE_ATOMIC
| IB_ACCESS_REMOTE_WRITE
) &&
943 !(cmd
.access_flags
& IB_ACCESS_LOCAL_WRITE
))
946 uobj
= kmalloc(sizeof *uobj
, GFP_KERNEL
);
950 init_uobj(uobj
, 0, file
->ucontext
, &mr_lock_class
);
951 down_write(&uobj
->mutex
);
953 pd
= idr_read_pd(cmd
.pd_handle
, file
->ucontext
);
959 mr
= pd
->device
->reg_user_mr(pd
, cmd
.start
, cmd
.length
, cmd
.hca_va
,
960 cmd
.access_flags
, &udata
);
966 mr
->device
= pd
->device
;
969 atomic_inc(&pd
->usecnt
);
970 atomic_set(&mr
->usecnt
, 0);
973 ret
= idr_add_uobj(&ib_uverbs_mr_idr
, uobj
);
977 memset(&resp
, 0, sizeof resp
);
978 resp
.lkey
= mr
->lkey
;
979 resp
.rkey
= mr
->rkey
;
980 resp
.mr_handle
= uobj
->id
;
982 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
983 &resp
, sizeof resp
)) {
990 mutex_lock(&file
->mutex
);
991 list_add_tail(&uobj
->list
, &file
->ucontext
->mr_list
);
992 mutex_unlock(&file
->mutex
);
996 up_write(&uobj
->mutex
);
1001 idr_remove_uobj(&ib_uverbs_mr_idr
, uobj
);
1010 put_uobj_write(uobj
);
1014 ssize_t
ib_uverbs_dereg_mr(struct ib_uverbs_file
*file
,
1015 const char __user
*buf
, int in_len
,
1018 struct ib_uverbs_dereg_mr cmd
;
1020 struct ib_uobject
*uobj
;
1023 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1026 uobj
= idr_write_uobj(&ib_uverbs_mr_idr
, cmd
.mr_handle
, file
->ucontext
);
1032 ret
= ib_dereg_mr(mr
);
1036 put_uobj_write(uobj
);
1041 idr_remove_uobj(&ib_uverbs_mr_idr
, uobj
);
1043 mutex_lock(&file
->mutex
);
1044 list_del(&uobj
->list
);
1045 mutex_unlock(&file
->mutex
);
1052 ssize_t
ib_uverbs_create_comp_channel(struct ib_uverbs_file
*file
,
1053 const char __user
*buf
, int in_len
,
1056 struct ib_uverbs_create_comp_channel cmd
;
1057 struct ib_uverbs_create_comp_channel_resp resp
;
1061 if (out_len
< sizeof resp
)
1064 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1067 ret
= get_unused_fd();
1072 filp
= ib_uverbs_alloc_event_file(file
, 0);
1074 put_unused_fd(resp
.fd
);
1075 return PTR_ERR(filp
);
1078 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
1079 &resp
, sizeof resp
)) {
1080 put_unused_fd(resp
.fd
);
1085 fd_install(resp
.fd
, filp
);
1089 ssize_t
ib_uverbs_create_cq(struct ib_uverbs_file
*file
,
1090 const char __user
*buf
, int in_len
,
1093 struct ib_uverbs_create_cq cmd
;
1094 struct ib_uverbs_create_cq_resp resp
;
1095 struct ib_udata udata
;
1096 struct ib_ucq_object
*obj
;
1097 struct ib_uverbs_event_file
*ev_file
= NULL
;
1101 if (out_len
< sizeof resp
)
1104 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1107 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
1108 (unsigned long) cmd
.response
+ sizeof resp
,
1109 in_len
- sizeof cmd
, out_len
- sizeof resp
);
1111 if (cmd
.comp_vector
>= file
->device
->num_comp_vectors
)
1114 obj
= kmalloc(sizeof *obj
, GFP_KERNEL
);
1118 init_uobj(&obj
->uobject
, cmd
.user_handle
, file
->ucontext
, &cq_lock_class
);
1119 down_write(&obj
->uobject
.mutex
);
1121 if (cmd
.comp_channel
>= 0) {
1122 ev_file
= ib_uverbs_lookup_comp_file(cmd
.comp_channel
);
1129 obj
->uverbs_file
= file
;
1130 obj
->comp_events_reported
= 0;
1131 obj
->async_events_reported
= 0;
1132 INIT_LIST_HEAD(&obj
->comp_list
);
1133 INIT_LIST_HEAD(&obj
->async_list
);
1135 cq
= file
->device
->ib_dev
->create_cq(file
->device
->ib_dev
, cmd
.cqe
,
1137 file
->ucontext
, &udata
);
1143 cq
->device
= file
->device
->ib_dev
;
1144 cq
->uobject
= &obj
->uobject
;
1145 cq
->comp_handler
= ib_uverbs_comp_handler
;
1146 cq
->event_handler
= ib_uverbs_cq_event_handler
;
1147 cq
->cq_context
= ev_file
;
1148 atomic_set(&cq
->usecnt
, 0);
1150 obj
->uobject
.object
= cq
;
1151 ret
= idr_add_uobj(&ib_uverbs_cq_idr
, &obj
->uobject
);
1155 memset(&resp
, 0, sizeof resp
);
1156 resp
.cq_handle
= obj
->uobject
.id
;
1159 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
1160 &resp
, sizeof resp
)) {
1165 mutex_lock(&file
->mutex
);
1166 list_add_tail(&obj
->uobject
.list
, &file
->ucontext
->cq_list
);
1167 mutex_unlock(&file
->mutex
);
1169 obj
->uobject
.live
= 1;
1171 up_write(&obj
->uobject
.mutex
);
1176 idr_remove_uobj(&ib_uverbs_cq_idr
, &obj
->uobject
);
1183 ib_uverbs_release_ucq(file
, ev_file
, obj
);
1186 put_uobj_write(&obj
->uobject
);
1190 ssize_t
ib_uverbs_resize_cq(struct ib_uverbs_file
*file
,
1191 const char __user
*buf
, int in_len
,
1194 struct ib_uverbs_resize_cq cmd
;
1195 struct ib_uverbs_resize_cq_resp resp
;
1196 struct ib_udata udata
;
1200 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1203 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
1204 (unsigned long) cmd
.response
+ sizeof resp
,
1205 in_len
- sizeof cmd
, out_len
- sizeof resp
);
1207 cq
= idr_read_cq(cmd
.cq_handle
, file
->ucontext
, 0);
1211 ret
= cq
->device
->resize_cq(cq
, cmd
.cqe
, &udata
);
1217 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
1218 &resp
, sizeof resp
.cqe
))
1224 return ret
? ret
: in_len
;
1227 static int copy_wc_to_user(void __user
*dest
, struct ib_wc
*wc
)
1229 struct ib_uverbs_wc tmp
;
1231 tmp
.wr_id
= wc
->wr_id
;
1232 tmp
.status
= wc
->status
;
1233 tmp
.opcode
= wc
->opcode
;
1234 tmp
.vendor_err
= wc
->vendor_err
;
1235 tmp
.byte_len
= wc
->byte_len
;
1236 tmp
.ex
.imm_data
= (__u32 __force
) wc
->ex
.imm_data
;
1237 tmp
.qp_num
= wc
->qp
->qp_num
;
1238 tmp
.src_qp
= wc
->src_qp
;
1239 tmp
.wc_flags
= wc
->wc_flags
;
1240 tmp
.pkey_index
= wc
->pkey_index
;
1241 tmp
.slid
= wc
->slid
;
1243 tmp
.dlid_path_bits
= wc
->dlid_path_bits
;
1244 tmp
.port_num
= wc
->port_num
;
1247 if (copy_to_user(dest
, &tmp
, sizeof tmp
))
1253 ssize_t
ib_uverbs_poll_cq(struct ib_uverbs_file
*file
,
1254 const char __user
*buf
, int in_len
,
1257 struct ib_uverbs_poll_cq cmd
;
1258 struct ib_uverbs_poll_cq_resp resp
;
1259 u8 __user
*header_ptr
;
1260 u8 __user
*data_ptr
;
1265 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1268 cq
= idr_read_cq(cmd
.cq_handle
, file
->ucontext
, 0);
1272 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1273 header_ptr
= (void __user
*)(unsigned long) cmd
.response
;
1274 data_ptr
= header_ptr
+ sizeof resp
;
1276 memset(&resp
, 0, sizeof resp
);
1277 while (resp
.count
< cmd
.ne
) {
1278 ret
= ib_poll_cq(cq
, 1, &wc
);
1284 ret
= copy_wc_to_user(data_ptr
, &wc
);
1288 data_ptr
+= sizeof(struct ib_uverbs_wc
);
1292 if (copy_to_user(header_ptr
, &resp
, sizeof resp
)) {
1304 ssize_t
ib_uverbs_req_notify_cq(struct ib_uverbs_file
*file
,
1305 const char __user
*buf
, int in_len
,
1308 struct ib_uverbs_req_notify_cq cmd
;
1311 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1314 cq
= idr_read_cq(cmd
.cq_handle
, file
->ucontext
, 0);
1318 ib_req_notify_cq(cq
, cmd
.solicited_only
?
1319 IB_CQ_SOLICITED
: IB_CQ_NEXT_COMP
);
1326 ssize_t
ib_uverbs_destroy_cq(struct ib_uverbs_file
*file
,
1327 const char __user
*buf
, int in_len
,
1330 struct ib_uverbs_destroy_cq cmd
;
1331 struct ib_uverbs_destroy_cq_resp resp
;
1332 struct ib_uobject
*uobj
;
1334 struct ib_ucq_object
*obj
;
1335 struct ib_uverbs_event_file
*ev_file
;
1338 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1341 uobj
= idr_write_uobj(&ib_uverbs_cq_idr
, cmd
.cq_handle
, file
->ucontext
);
1345 ev_file
= cq
->cq_context
;
1346 obj
= container_of(cq
->uobject
, struct ib_ucq_object
, uobject
);
1348 ret
= ib_destroy_cq(cq
);
1352 put_uobj_write(uobj
);
1357 idr_remove_uobj(&ib_uverbs_cq_idr
, uobj
);
1359 mutex_lock(&file
->mutex
);
1360 list_del(&uobj
->list
);
1361 mutex_unlock(&file
->mutex
);
1363 ib_uverbs_release_ucq(file
, ev_file
, obj
);
1365 memset(&resp
, 0, sizeof resp
);
1366 resp
.comp_events_reported
= obj
->comp_events_reported
;
1367 resp
.async_events_reported
= obj
->async_events_reported
;
1371 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
1372 &resp
, sizeof resp
))
1378 ssize_t
ib_uverbs_create_qp(struct ib_uverbs_file
*file
,
1379 const char __user
*buf
, int in_len
,
1382 struct ib_uverbs_create_qp cmd
;
1383 struct ib_uverbs_create_qp_resp resp
;
1384 struct ib_udata udata
;
1385 struct ib_uqp_object
*obj
;
1386 struct ib_device
*device
;
1387 struct ib_pd
*pd
= NULL
;
1388 struct ib_xrcd
*xrcd
= NULL
;
1389 struct ib_uobject
*uninitialized_var(xrcd_uobj
);
1390 struct ib_cq
*scq
= NULL
, *rcq
= NULL
;
1391 struct ib_srq
*srq
= NULL
;
1393 struct ib_qp_init_attr attr
;
1396 if (out_len
< sizeof resp
)
1399 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1402 if (cmd
.qp_type
== IB_QPT_RAW_PACKET
&& !capable(CAP_NET_RAW
))
1405 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
1406 (unsigned long) cmd
.response
+ sizeof resp
,
1407 in_len
- sizeof cmd
, out_len
- sizeof resp
);
1409 obj
= kmalloc(sizeof *obj
, GFP_KERNEL
);
1413 init_uobj(&obj
->uevent
.uobject
, cmd
.user_handle
, file
->ucontext
, &qp_lock_class
);
1414 down_write(&obj
->uevent
.uobject
.mutex
);
1416 if (cmd
.qp_type
== IB_QPT_XRC_TGT
) {
1417 xrcd
= idr_read_xrcd(cmd
.pd_handle
, file
->ucontext
, &xrcd_uobj
);
1422 device
= xrcd
->device
;
1424 if (cmd
.qp_type
== IB_QPT_XRC_INI
) {
1425 cmd
.max_recv_wr
= cmd
.max_recv_sge
= 0;
1428 srq
= idr_read_srq(cmd
.srq_handle
, file
->ucontext
);
1429 if (!srq
|| srq
->srq_type
!= IB_SRQT_BASIC
) {
1435 if (cmd
.recv_cq_handle
!= cmd
.send_cq_handle
) {
1436 rcq
= idr_read_cq(cmd
.recv_cq_handle
, file
->ucontext
, 0);
1444 scq
= idr_read_cq(cmd
.send_cq_handle
, file
->ucontext
, !!rcq
);
1446 pd
= idr_read_pd(cmd
.pd_handle
, file
->ucontext
);
1452 device
= pd
->device
;
1455 attr
.event_handler
= ib_uverbs_qp_event_handler
;
1456 attr
.qp_context
= file
;
1461 attr
.sq_sig_type
= cmd
.sq_sig_all
? IB_SIGNAL_ALL_WR
: IB_SIGNAL_REQ_WR
;
1462 attr
.qp_type
= cmd
.qp_type
;
1463 attr
.create_flags
= 0;
1465 attr
.cap
.max_send_wr
= cmd
.max_send_wr
;
1466 attr
.cap
.max_recv_wr
= cmd
.max_recv_wr
;
1467 attr
.cap
.max_send_sge
= cmd
.max_send_sge
;
1468 attr
.cap
.max_recv_sge
= cmd
.max_recv_sge
;
1469 attr
.cap
.max_inline_data
= cmd
.max_inline_data
;
1471 obj
->uevent
.events_reported
= 0;
1472 INIT_LIST_HEAD(&obj
->uevent
.event_list
);
1473 INIT_LIST_HEAD(&obj
->mcast_list
);
1475 if (cmd
.qp_type
== IB_QPT_XRC_TGT
)
1476 qp
= ib_create_qp(pd
, &attr
);
1478 qp
= device
->create_qp(pd
, &attr
, &udata
);
1485 if (cmd
.qp_type
!= IB_QPT_XRC_TGT
) {
1487 qp
->device
= device
;
1489 qp
->send_cq
= attr
.send_cq
;
1490 qp
->recv_cq
= attr
.recv_cq
;
1492 qp
->event_handler
= attr
.event_handler
;
1493 qp
->qp_context
= attr
.qp_context
;
1494 qp
->qp_type
= attr
.qp_type
;
1495 atomic_set(&qp
->usecnt
, 0);
1496 atomic_inc(&pd
->usecnt
);
1497 atomic_inc(&attr
.send_cq
->usecnt
);
1499 atomic_inc(&attr
.recv_cq
->usecnt
);
1501 atomic_inc(&attr
.srq
->usecnt
);
1503 qp
->uobject
= &obj
->uevent
.uobject
;
1505 obj
->uevent
.uobject
.object
= qp
;
1506 ret
= idr_add_uobj(&ib_uverbs_qp_idr
, &obj
->uevent
.uobject
);
1510 memset(&resp
, 0, sizeof resp
);
1511 resp
.qpn
= qp
->qp_num
;
1512 resp
.qp_handle
= obj
->uevent
.uobject
.id
;
1513 resp
.max_recv_sge
= attr
.cap
.max_recv_sge
;
1514 resp
.max_send_sge
= attr
.cap
.max_send_sge
;
1515 resp
.max_recv_wr
= attr
.cap
.max_recv_wr
;
1516 resp
.max_send_wr
= attr
.cap
.max_send_wr
;
1517 resp
.max_inline_data
= attr
.cap
.max_inline_data
;
1519 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
1520 &resp
, sizeof resp
)) {
1526 put_xrcd_read(xrcd_uobj
);
1531 if (rcq
&& rcq
!= scq
)
1536 mutex_lock(&file
->mutex
);
1537 list_add_tail(&obj
->uevent
.uobject
.list
, &file
->ucontext
->qp_list
);
1538 mutex_unlock(&file
->mutex
);
1540 obj
->uevent
.uobject
.live
= 1;
1542 up_write(&obj
->uevent
.uobject
.mutex
);
1547 idr_remove_uobj(&ib_uverbs_qp_idr
, &obj
->uevent
.uobject
);
1554 put_xrcd_read(xrcd_uobj
);
1559 if (rcq
&& rcq
!= scq
)
1564 put_uobj_write(&obj
->uevent
.uobject
);
1568 ssize_t
ib_uverbs_open_qp(struct ib_uverbs_file
*file
,
1569 const char __user
*buf
, int in_len
, int out_len
)
1571 struct ib_uverbs_open_qp cmd
;
1572 struct ib_uverbs_create_qp_resp resp
;
1573 struct ib_udata udata
;
1574 struct ib_uqp_object
*obj
;
1575 struct ib_xrcd
*xrcd
;
1576 struct ib_uobject
*uninitialized_var(xrcd_uobj
);
1578 struct ib_qp_open_attr attr
;
1581 if (out_len
< sizeof resp
)
1584 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1587 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
1588 (unsigned long) cmd
.response
+ sizeof resp
,
1589 in_len
- sizeof cmd
, out_len
- sizeof resp
);
1591 obj
= kmalloc(sizeof *obj
, GFP_KERNEL
);
1595 init_uobj(&obj
->uevent
.uobject
, cmd
.user_handle
, file
->ucontext
, &qp_lock_class
);
1596 down_write(&obj
->uevent
.uobject
.mutex
);
1598 xrcd
= idr_read_xrcd(cmd
.pd_handle
, file
->ucontext
, &xrcd_uobj
);
1604 attr
.event_handler
= ib_uverbs_qp_event_handler
;
1605 attr
.qp_context
= file
;
1606 attr
.qp_num
= cmd
.qpn
;
1607 attr
.qp_type
= cmd
.qp_type
;
1609 obj
->uevent
.events_reported
= 0;
1610 INIT_LIST_HEAD(&obj
->uevent
.event_list
);
1611 INIT_LIST_HEAD(&obj
->mcast_list
);
1613 qp
= ib_open_qp(xrcd
, &attr
);
1619 qp
->uobject
= &obj
->uevent
.uobject
;
1621 obj
->uevent
.uobject
.object
= qp
;
1622 ret
= idr_add_uobj(&ib_uverbs_qp_idr
, &obj
->uevent
.uobject
);
1626 memset(&resp
, 0, sizeof resp
);
1627 resp
.qpn
= qp
->qp_num
;
1628 resp
.qp_handle
= obj
->uevent
.uobject
.id
;
1630 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
1631 &resp
, sizeof resp
)) {
1636 put_xrcd_read(xrcd_uobj
);
1638 mutex_lock(&file
->mutex
);
1639 list_add_tail(&obj
->uevent
.uobject
.list
, &file
->ucontext
->qp_list
);
1640 mutex_unlock(&file
->mutex
);
1642 obj
->uevent
.uobject
.live
= 1;
1644 up_write(&obj
->uevent
.uobject
.mutex
);
1649 idr_remove_uobj(&ib_uverbs_qp_idr
, &obj
->uevent
.uobject
);
1655 put_xrcd_read(xrcd_uobj
);
1656 put_uobj_write(&obj
->uevent
.uobject
);
1660 ssize_t
ib_uverbs_query_qp(struct ib_uverbs_file
*file
,
1661 const char __user
*buf
, int in_len
,
1664 struct ib_uverbs_query_qp cmd
;
1665 struct ib_uverbs_query_qp_resp resp
;
1667 struct ib_qp_attr
*attr
;
1668 struct ib_qp_init_attr
*init_attr
;
1671 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1674 attr
= kmalloc(sizeof *attr
, GFP_KERNEL
);
1675 init_attr
= kmalloc(sizeof *init_attr
, GFP_KERNEL
);
1676 if (!attr
|| !init_attr
) {
1681 qp
= idr_read_qp(cmd
.qp_handle
, file
->ucontext
);
1687 ret
= ib_query_qp(qp
, attr
, cmd
.attr_mask
, init_attr
);
1694 memset(&resp
, 0, sizeof resp
);
1696 resp
.qp_state
= attr
->qp_state
;
1697 resp
.cur_qp_state
= attr
->cur_qp_state
;
1698 resp
.path_mtu
= attr
->path_mtu
;
1699 resp
.path_mig_state
= attr
->path_mig_state
;
1700 resp
.qkey
= attr
->qkey
;
1701 resp
.rq_psn
= attr
->rq_psn
;
1702 resp
.sq_psn
= attr
->sq_psn
;
1703 resp
.dest_qp_num
= attr
->dest_qp_num
;
1704 resp
.qp_access_flags
= attr
->qp_access_flags
;
1705 resp
.pkey_index
= attr
->pkey_index
;
1706 resp
.alt_pkey_index
= attr
->alt_pkey_index
;
1707 resp
.sq_draining
= attr
->sq_draining
;
1708 resp
.max_rd_atomic
= attr
->max_rd_atomic
;
1709 resp
.max_dest_rd_atomic
= attr
->max_dest_rd_atomic
;
1710 resp
.min_rnr_timer
= attr
->min_rnr_timer
;
1711 resp
.port_num
= attr
->port_num
;
1712 resp
.timeout
= attr
->timeout
;
1713 resp
.retry_cnt
= attr
->retry_cnt
;
1714 resp
.rnr_retry
= attr
->rnr_retry
;
1715 resp
.alt_port_num
= attr
->alt_port_num
;
1716 resp
.alt_timeout
= attr
->alt_timeout
;
1718 memcpy(resp
.dest
.dgid
, attr
->ah_attr
.grh
.dgid
.raw
, 16);
1719 resp
.dest
.flow_label
= attr
->ah_attr
.grh
.flow_label
;
1720 resp
.dest
.sgid_index
= attr
->ah_attr
.grh
.sgid_index
;
1721 resp
.dest
.hop_limit
= attr
->ah_attr
.grh
.hop_limit
;
1722 resp
.dest
.traffic_class
= attr
->ah_attr
.grh
.traffic_class
;
1723 resp
.dest
.dlid
= attr
->ah_attr
.dlid
;
1724 resp
.dest
.sl
= attr
->ah_attr
.sl
;
1725 resp
.dest
.src_path_bits
= attr
->ah_attr
.src_path_bits
;
1726 resp
.dest
.static_rate
= attr
->ah_attr
.static_rate
;
1727 resp
.dest
.is_global
= !!(attr
->ah_attr
.ah_flags
& IB_AH_GRH
);
1728 resp
.dest
.port_num
= attr
->ah_attr
.port_num
;
1730 memcpy(resp
.alt_dest
.dgid
, attr
->alt_ah_attr
.grh
.dgid
.raw
, 16);
1731 resp
.alt_dest
.flow_label
= attr
->alt_ah_attr
.grh
.flow_label
;
1732 resp
.alt_dest
.sgid_index
= attr
->alt_ah_attr
.grh
.sgid_index
;
1733 resp
.alt_dest
.hop_limit
= attr
->alt_ah_attr
.grh
.hop_limit
;
1734 resp
.alt_dest
.traffic_class
= attr
->alt_ah_attr
.grh
.traffic_class
;
1735 resp
.alt_dest
.dlid
= attr
->alt_ah_attr
.dlid
;
1736 resp
.alt_dest
.sl
= attr
->alt_ah_attr
.sl
;
1737 resp
.alt_dest
.src_path_bits
= attr
->alt_ah_attr
.src_path_bits
;
1738 resp
.alt_dest
.static_rate
= attr
->alt_ah_attr
.static_rate
;
1739 resp
.alt_dest
.is_global
= !!(attr
->alt_ah_attr
.ah_flags
& IB_AH_GRH
);
1740 resp
.alt_dest
.port_num
= attr
->alt_ah_attr
.port_num
;
1742 resp
.max_send_wr
= init_attr
->cap
.max_send_wr
;
1743 resp
.max_recv_wr
= init_attr
->cap
.max_recv_wr
;
1744 resp
.max_send_sge
= init_attr
->cap
.max_send_sge
;
1745 resp
.max_recv_sge
= init_attr
->cap
.max_recv_sge
;
1746 resp
.max_inline_data
= init_attr
->cap
.max_inline_data
;
1747 resp
.sq_sig_all
= init_attr
->sq_sig_type
== IB_SIGNAL_ALL_WR
;
1749 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
1750 &resp
, sizeof resp
))
1757 return ret
? ret
: in_len
;
1760 /* Remove ignored fields set in the attribute mask */
1761 static int modify_qp_mask(enum ib_qp_type qp_type
, int mask
)
1764 case IB_QPT_XRC_INI
:
1765 return mask
& ~(IB_QP_MAX_DEST_RD_ATOMIC
| IB_QP_MIN_RNR_TIMER
);
1766 case IB_QPT_XRC_TGT
:
1767 return mask
& ~(IB_QP_MAX_QP_RD_ATOMIC
| IB_QP_RETRY_CNT
|
1774 ssize_t
ib_uverbs_modify_qp(struct ib_uverbs_file
*file
,
1775 const char __user
*buf
, int in_len
,
1778 struct ib_uverbs_modify_qp cmd
;
1779 struct ib_udata udata
;
1781 struct ib_qp_attr
*attr
;
1784 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1787 INIT_UDATA(&udata
, buf
+ sizeof cmd
, NULL
, in_len
- sizeof cmd
,
1790 attr
= kmalloc(sizeof *attr
, GFP_KERNEL
);
1794 qp
= idr_read_qp(cmd
.qp_handle
, file
->ucontext
);
1800 attr
->qp_state
= cmd
.qp_state
;
1801 attr
->cur_qp_state
= cmd
.cur_qp_state
;
1802 attr
->path_mtu
= cmd
.path_mtu
;
1803 attr
->path_mig_state
= cmd
.path_mig_state
;
1804 attr
->qkey
= cmd
.qkey
;
1805 attr
->rq_psn
= cmd
.rq_psn
;
1806 attr
->sq_psn
= cmd
.sq_psn
;
1807 attr
->dest_qp_num
= cmd
.dest_qp_num
;
1808 attr
->qp_access_flags
= cmd
.qp_access_flags
;
1809 attr
->pkey_index
= cmd
.pkey_index
;
1810 attr
->alt_pkey_index
= cmd
.alt_pkey_index
;
1811 attr
->en_sqd_async_notify
= cmd
.en_sqd_async_notify
;
1812 attr
->max_rd_atomic
= cmd
.max_rd_atomic
;
1813 attr
->max_dest_rd_atomic
= cmd
.max_dest_rd_atomic
;
1814 attr
->min_rnr_timer
= cmd
.min_rnr_timer
;
1815 attr
->port_num
= cmd
.port_num
;
1816 attr
->timeout
= cmd
.timeout
;
1817 attr
->retry_cnt
= cmd
.retry_cnt
;
1818 attr
->rnr_retry
= cmd
.rnr_retry
;
1819 attr
->alt_port_num
= cmd
.alt_port_num
;
1820 attr
->alt_timeout
= cmd
.alt_timeout
;
1822 memcpy(attr
->ah_attr
.grh
.dgid
.raw
, cmd
.dest
.dgid
, 16);
1823 attr
->ah_attr
.grh
.flow_label
= cmd
.dest
.flow_label
;
1824 attr
->ah_attr
.grh
.sgid_index
= cmd
.dest
.sgid_index
;
1825 attr
->ah_attr
.grh
.hop_limit
= cmd
.dest
.hop_limit
;
1826 attr
->ah_attr
.grh
.traffic_class
= cmd
.dest
.traffic_class
;
1827 attr
->ah_attr
.dlid
= cmd
.dest
.dlid
;
1828 attr
->ah_attr
.sl
= cmd
.dest
.sl
;
1829 attr
->ah_attr
.src_path_bits
= cmd
.dest
.src_path_bits
;
1830 attr
->ah_attr
.static_rate
= cmd
.dest
.static_rate
;
1831 attr
->ah_attr
.ah_flags
= cmd
.dest
.is_global
? IB_AH_GRH
: 0;
1832 attr
->ah_attr
.port_num
= cmd
.dest
.port_num
;
1834 memcpy(attr
->alt_ah_attr
.grh
.dgid
.raw
, cmd
.alt_dest
.dgid
, 16);
1835 attr
->alt_ah_attr
.grh
.flow_label
= cmd
.alt_dest
.flow_label
;
1836 attr
->alt_ah_attr
.grh
.sgid_index
= cmd
.alt_dest
.sgid_index
;
1837 attr
->alt_ah_attr
.grh
.hop_limit
= cmd
.alt_dest
.hop_limit
;
1838 attr
->alt_ah_attr
.grh
.traffic_class
= cmd
.alt_dest
.traffic_class
;
1839 attr
->alt_ah_attr
.dlid
= cmd
.alt_dest
.dlid
;
1840 attr
->alt_ah_attr
.sl
= cmd
.alt_dest
.sl
;
1841 attr
->alt_ah_attr
.src_path_bits
= cmd
.alt_dest
.src_path_bits
;
1842 attr
->alt_ah_attr
.static_rate
= cmd
.alt_dest
.static_rate
;
1843 attr
->alt_ah_attr
.ah_flags
= cmd
.alt_dest
.is_global
? IB_AH_GRH
: 0;
1844 attr
->alt_ah_attr
.port_num
= cmd
.alt_dest
.port_num
;
1846 if (qp
->real_qp
== qp
) {
1847 ret
= qp
->device
->modify_qp(qp
, attr
,
1848 modify_qp_mask(qp
->qp_type
, cmd
.attr_mask
), &udata
);
1850 ret
= ib_modify_qp(qp
, attr
, modify_qp_mask(qp
->qp_type
, cmd
.attr_mask
));
1866 ssize_t
ib_uverbs_destroy_qp(struct ib_uverbs_file
*file
,
1867 const char __user
*buf
, int in_len
,
1870 struct ib_uverbs_destroy_qp cmd
;
1871 struct ib_uverbs_destroy_qp_resp resp
;
1872 struct ib_uobject
*uobj
;
1874 struct ib_uqp_object
*obj
;
1877 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1880 memset(&resp
, 0, sizeof resp
);
1882 uobj
= idr_write_uobj(&ib_uverbs_qp_idr
, cmd
.qp_handle
, file
->ucontext
);
1886 obj
= container_of(uobj
, struct ib_uqp_object
, uevent
.uobject
);
1888 if (!list_empty(&obj
->mcast_list
)) {
1889 put_uobj_write(uobj
);
1893 ret
= ib_destroy_qp(qp
);
1897 put_uobj_write(uobj
);
1902 idr_remove_uobj(&ib_uverbs_qp_idr
, uobj
);
1904 mutex_lock(&file
->mutex
);
1905 list_del(&uobj
->list
);
1906 mutex_unlock(&file
->mutex
);
1908 ib_uverbs_release_uevent(file
, &obj
->uevent
);
1910 resp
.events_reported
= obj
->uevent
.events_reported
;
1914 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
1915 &resp
, sizeof resp
))
1921 ssize_t
ib_uverbs_post_send(struct ib_uverbs_file
*file
,
1922 const char __user
*buf
, int in_len
,
1925 struct ib_uverbs_post_send cmd
;
1926 struct ib_uverbs_post_send_resp resp
;
1927 struct ib_uverbs_send_wr
*user_wr
;
1928 struct ib_send_wr
*wr
= NULL
, *last
, *next
, *bad_wr
;
1932 ssize_t ret
= -EINVAL
;
1934 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
1937 if (in_len
< sizeof cmd
+ cmd
.wqe_size
* cmd
.wr_count
+
1938 cmd
.sge_count
* sizeof (struct ib_uverbs_sge
))
1941 if (cmd
.wqe_size
< sizeof (struct ib_uverbs_send_wr
))
1944 user_wr
= kmalloc(cmd
.wqe_size
, GFP_KERNEL
);
1948 qp
= idr_read_qp(cmd
.qp_handle
, file
->ucontext
);
1952 is_ud
= qp
->qp_type
== IB_QPT_UD
;
1955 for (i
= 0; i
< cmd
.wr_count
; ++i
) {
1956 if (copy_from_user(user_wr
,
1957 buf
+ sizeof cmd
+ i
* cmd
.wqe_size
,
1963 if (user_wr
->num_sge
+ sg_ind
> cmd
.sge_count
) {
1968 next
= kmalloc(ALIGN(sizeof *next
, sizeof (struct ib_sge
)) +
1969 user_wr
->num_sge
* sizeof (struct ib_sge
),
1983 next
->wr_id
= user_wr
->wr_id
;
1984 next
->num_sge
= user_wr
->num_sge
;
1985 next
->opcode
= user_wr
->opcode
;
1986 next
->send_flags
= user_wr
->send_flags
;
1989 next
->wr
.ud
.ah
= idr_read_ah(user_wr
->wr
.ud
.ah
,
1991 if (!next
->wr
.ud
.ah
) {
1995 next
->wr
.ud
.remote_qpn
= user_wr
->wr
.ud
.remote_qpn
;
1996 next
->wr
.ud
.remote_qkey
= user_wr
->wr
.ud
.remote_qkey
;
1998 switch (next
->opcode
) {
1999 case IB_WR_RDMA_WRITE_WITH_IMM
:
2001 (__be32 __force
) user_wr
->ex
.imm_data
;
2002 case IB_WR_RDMA_WRITE
:
2003 case IB_WR_RDMA_READ
:
2004 next
->wr
.rdma
.remote_addr
=
2005 user_wr
->wr
.rdma
.remote_addr
;
2006 next
->wr
.rdma
.rkey
=
2007 user_wr
->wr
.rdma
.rkey
;
2009 case IB_WR_SEND_WITH_IMM
:
2011 (__be32 __force
) user_wr
->ex
.imm_data
;
2013 case IB_WR_SEND_WITH_INV
:
2014 next
->ex
.invalidate_rkey
=
2015 user_wr
->ex
.invalidate_rkey
;
2017 case IB_WR_ATOMIC_CMP_AND_SWP
:
2018 case IB_WR_ATOMIC_FETCH_AND_ADD
:
2019 next
->wr
.atomic
.remote_addr
=
2020 user_wr
->wr
.atomic
.remote_addr
;
2021 next
->wr
.atomic
.compare_add
=
2022 user_wr
->wr
.atomic
.compare_add
;
2023 next
->wr
.atomic
.swap
= user_wr
->wr
.atomic
.swap
;
2024 next
->wr
.atomic
.rkey
= user_wr
->wr
.atomic
.rkey
;
2031 if (next
->num_sge
) {
2032 next
->sg_list
= (void *) next
+
2033 ALIGN(sizeof *next
, sizeof (struct ib_sge
));
2034 if (copy_from_user(next
->sg_list
,
2036 cmd
.wr_count
* cmd
.wqe_size
+
2037 sg_ind
* sizeof (struct ib_sge
),
2038 next
->num_sge
* sizeof (struct ib_sge
))) {
2042 sg_ind
+= next
->num_sge
;
2044 next
->sg_list
= NULL
;
2048 ret
= qp
->device
->post_send(qp
->real_qp
, wr
, &bad_wr
);
2050 for (next
= wr
; next
; next
= next
->next
) {
2056 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
2057 &resp
, sizeof resp
))
2064 if (is_ud
&& wr
->wr
.ud
.ah
)
2065 put_ah_read(wr
->wr
.ud
.ah
);
2074 return ret
? ret
: in_len
;
2077 static struct ib_recv_wr
*ib_uverbs_unmarshall_recv(const char __user
*buf
,
2083 struct ib_uverbs_recv_wr
*user_wr
;
2084 struct ib_recv_wr
*wr
= NULL
, *last
, *next
;
2089 if (in_len
< wqe_size
* wr_count
+
2090 sge_count
* sizeof (struct ib_uverbs_sge
))
2091 return ERR_PTR(-EINVAL
);
2093 if (wqe_size
< sizeof (struct ib_uverbs_recv_wr
))
2094 return ERR_PTR(-EINVAL
);
2096 user_wr
= kmalloc(wqe_size
, GFP_KERNEL
);
2098 return ERR_PTR(-ENOMEM
);
2102 for (i
= 0; i
< wr_count
; ++i
) {
2103 if (copy_from_user(user_wr
, buf
+ i
* wqe_size
,
2109 if (user_wr
->num_sge
+ sg_ind
> sge_count
) {
2114 next
= kmalloc(ALIGN(sizeof *next
, sizeof (struct ib_sge
)) +
2115 user_wr
->num_sge
* sizeof (struct ib_sge
),
2129 next
->wr_id
= user_wr
->wr_id
;
2130 next
->num_sge
= user_wr
->num_sge
;
2132 if (next
->num_sge
) {
2133 next
->sg_list
= (void *) next
+
2134 ALIGN(sizeof *next
, sizeof (struct ib_sge
));
2135 if (copy_from_user(next
->sg_list
,
2136 buf
+ wr_count
* wqe_size
+
2137 sg_ind
* sizeof (struct ib_sge
),
2138 next
->num_sge
* sizeof (struct ib_sge
))) {
2142 sg_ind
+= next
->num_sge
;
2144 next
->sg_list
= NULL
;
2159 return ERR_PTR(ret
);
2162 ssize_t
ib_uverbs_post_recv(struct ib_uverbs_file
*file
,
2163 const char __user
*buf
, int in_len
,
2166 struct ib_uverbs_post_recv cmd
;
2167 struct ib_uverbs_post_recv_resp resp
;
2168 struct ib_recv_wr
*wr
, *next
, *bad_wr
;
2170 ssize_t ret
= -EINVAL
;
2172 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2175 wr
= ib_uverbs_unmarshall_recv(buf
+ sizeof cmd
,
2176 in_len
- sizeof cmd
, cmd
.wr_count
,
2177 cmd
.sge_count
, cmd
.wqe_size
);
2181 qp
= idr_read_qp(cmd
.qp_handle
, file
->ucontext
);
2186 ret
= qp
->device
->post_recv(qp
->real_qp
, wr
, &bad_wr
);
2191 for (next
= wr
; next
; next
= next
->next
) {
2197 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
2198 &resp
, sizeof resp
))
2208 return ret
? ret
: in_len
;
2211 ssize_t
ib_uverbs_post_srq_recv(struct ib_uverbs_file
*file
,
2212 const char __user
*buf
, int in_len
,
2215 struct ib_uverbs_post_srq_recv cmd
;
2216 struct ib_uverbs_post_srq_recv_resp resp
;
2217 struct ib_recv_wr
*wr
, *next
, *bad_wr
;
2219 ssize_t ret
= -EINVAL
;
2221 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2224 wr
= ib_uverbs_unmarshall_recv(buf
+ sizeof cmd
,
2225 in_len
- sizeof cmd
, cmd
.wr_count
,
2226 cmd
.sge_count
, cmd
.wqe_size
);
2230 srq
= idr_read_srq(cmd
.srq_handle
, file
->ucontext
);
2235 ret
= srq
->device
->post_srq_recv(srq
, wr
, &bad_wr
);
2240 for (next
= wr
; next
; next
= next
->next
) {
2246 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
2247 &resp
, sizeof resp
))
2257 return ret
? ret
: in_len
;
2260 ssize_t
ib_uverbs_create_ah(struct ib_uverbs_file
*file
,
2261 const char __user
*buf
, int in_len
,
2264 struct ib_uverbs_create_ah cmd
;
2265 struct ib_uverbs_create_ah_resp resp
;
2266 struct ib_uobject
*uobj
;
2269 struct ib_ah_attr attr
;
2272 if (out_len
< sizeof resp
)
2275 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2278 uobj
= kmalloc(sizeof *uobj
, GFP_KERNEL
);
2282 init_uobj(uobj
, cmd
.user_handle
, file
->ucontext
, &ah_lock_class
);
2283 down_write(&uobj
->mutex
);
2285 pd
= idr_read_pd(cmd
.pd_handle
, file
->ucontext
);
2291 attr
.dlid
= cmd
.attr
.dlid
;
2292 attr
.sl
= cmd
.attr
.sl
;
2293 attr
.src_path_bits
= cmd
.attr
.src_path_bits
;
2294 attr
.static_rate
= cmd
.attr
.static_rate
;
2295 attr
.ah_flags
= cmd
.attr
.is_global
? IB_AH_GRH
: 0;
2296 attr
.port_num
= cmd
.attr
.port_num
;
2297 attr
.grh
.flow_label
= cmd
.attr
.grh
.flow_label
;
2298 attr
.grh
.sgid_index
= cmd
.attr
.grh
.sgid_index
;
2299 attr
.grh
.hop_limit
= cmd
.attr
.grh
.hop_limit
;
2300 attr
.grh
.traffic_class
= cmd
.attr
.grh
.traffic_class
;
2301 memcpy(attr
.grh
.dgid
.raw
, cmd
.attr
.grh
.dgid
, 16);
2303 ah
= ib_create_ah(pd
, &attr
);
2312 ret
= idr_add_uobj(&ib_uverbs_ah_idr
, uobj
);
2316 resp
.ah_handle
= uobj
->id
;
2318 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
2319 &resp
, sizeof resp
)) {
2326 mutex_lock(&file
->mutex
);
2327 list_add_tail(&uobj
->list
, &file
->ucontext
->ah_list
);
2328 mutex_unlock(&file
->mutex
);
2332 up_write(&uobj
->mutex
);
2337 idr_remove_uobj(&ib_uverbs_ah_idr
, uobj
);
2346 put_uobj_write(uobj
);
2350 ssize_t
ib_uverbs_destroy_ah(struct ib_uverbs_file
*file
,
2351 const char __user
*buf
, int in_len
, int out_len
)
2353 struct ib_uverbs_destroy_ah cmd
;
2355 struct ib_uobject
*uobj
;
2358 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2361 uobj
= idr_write_uobj(&ib_uverbs_ah_idr
, cmd
.ah_handle
, file
->ucontext
);
2366 ret
= ib_destroy_ah(ah
);
2370 put_uobj_write(uobj
);
2375 idr_remove_uobj(&ib_uverbs_ah_idr
, uobj
);
2377 mutex_lock(&file
->mutex
);
2378 list_del(&uobj
->list
);
2379 mutex_unlock(&file
->mutex
);
2386 ssize_t
ib_uverbs_attach_mcast(struct ib_uverbs_file
*file
,
2387 const char __user
*buf
, int in_len
,
2390 struct ib_uverbs_attach_mcast cmd
;
2392 struct ib_uqp_object
*obj
;
2393 struct ib_uverbs_mcast_entry
*mcast
;
2396 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2399 qp
= idr_write_qp(cmd
.qp_handle
, file
->ucontext
);
2403 obj
= container_of(qp
->uobject
, struct ib_uqp_object
, uevent
.uobject
);
2405 list_for_each_entry(mcast
, &obj
->mcast_list
, list
)
2406 if (cmd
.mlid
== mcast
->lid
&&
2407 !memcmp(cmd
.gid
, mcast
->gid
.raw
, sizeof mcast
->gid
.raw
)) {
2412 mcast
= kmalloc(sizeof *mcast
, GFP_KERNEL
);
2418 mcast
->lid
= cmd
.mlid
;
2419 memcpy(mcast
->gid
.raw
, cmd
.gid
, sizeof mcast
->gid
.raw
);
2421 ret
= ib_attach_mcast(qp
, &mcast
->gid
, cmd
.mlid
);
2423 list_add_tail(&mcast
->list
, &obj
->mcast_list
);
2430 return ret
? ret
: in_len
;
2433 ssize_t
ib_uverbs_detach_mcast(struct ib_uverbs_file
*file
,
2434 const char __user
*buf
, int in_len
,
2437 struct ib_uverbs_detach_mcast cmd
;
2438 struct ib_uqp_object
*obj
;
2440 struct ib_uverbs_mcast_entry
*mcast
;
2443 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2446 qp
= idr_write_qp(cmd
.qp_handle
, file
->ucontext
);
2450 ret
= ib_detach_mcast(qp
, (union ib_gid
*) cmd
.gid
, cmd
.mlid
);
2454 obj
= container_of(qp
->uobject
, struct ib_uqp_object
, uevent
.uobject
);
2456 list_for_each_entry(mcast
, &obj
->mcast_list
, list
)
2457 if (cmd
.mlid
== mcast
->lid
&&
2458 !memcmp(cmd
.gid
, mcast
->gid
.raw
, sizeof mcast
->gid
.raw
)) {
2459 list_del(&mcast
->list
);
2467 return ret
? ret
: in_len
;
2470 static int __uverbs_create_xsrq(struct ib_uverbs_file
*file
,
2471 struct ib_uverbs_create_xsrq
*cmd
,
2472 struct ib_udata
*udata
)
2474 struct ib_uverbs_create_srq_resp resp
;
2475 struct ib_usrq_object
*obj
;
2478 struct ib_uobject
*uninitialized_var(xrcd_uobj
);
2479 struct ib_srq_init_attr attr
;
2482 obj
= kmalloc(sizeof *obj
, GFP_KERNEL
);
2486 init_uobj(&obj
->uevent
.uobject
, cmd
->user_handle
, file
->ucontext
, &srq_lock_class
);
2487 down_write(&obj
->uevent
.uobject
.mutex
);
2489 if (cmd
->srq_type
== IB_SRQT_XRC
) {
2490 attr
.ext
.xrc
.xrcd
= idr_read_xrcd(cmd
->xrcd_handle
, file
->ucontext
, &xrcd_uobj
);
2491 if (!attr
.ext
.xrc
.xrcd
) {
2496 obj
->uxrcd
= container_of(xrcd_uobj
, struct ib_uxrcd_object
, uobject
);
2497 atomic_inc(&obj
->uxrcd
->refcnt
);
2499 attr
.ext
.xrc
.cq
= idr_read_cq(cmd
->cq_handle
, file
->ucontext
, 0);
2500 if (!attr
.ext
.xrc
.cq
) {
2506 pd
= idr_read_pd(cmd
->pd_handle
, file
->ucontext
);
2512 attr
.event_handler
= ib_uverbs_srq_event_handler
;
2513 attr
.srq_context
= file
;
2514 attr
.srq_type
= cmd
->srq_type
;
2515 attr
.attr
.max_wr
= cmd
->max_wr
;
2516 attr
.attr
.max_sge
= cmd
->max_sge
;
2517 attr
.attr
.srq_limit
= cmd
->srq_limit
;
2519 obj
->uevent
.events_reported
= 0;
2520 INIT_LIST_HEAD(&obj
->uevent
.event_list
);
2522 srq
= pd
->device
->create_srq(pd
, &attr
, udata
);
2528 srq
->device
= pd
->device
;
2530 srq
->srq_type
= cmd
->srq_type
;
2531 srq
->uobject
= &obj
->uevent
.uobject
;
2532 srq
->event_handler
= attr
.event_handler
;
2533 srq
->srq_context
= attr
.srq_context
;
2535 if (cmd
->srq_type
== IB_SRQT_XRC
) {
2536 srq
->ext
.xrc
.cq
= attr
.ext
.xrc
.cq
;
2537 srq
->ext
.xrc
.xrcd
= attr
.ext
.xrc
.xrcd
;
2538 atomic_inc(&attr
.ext
.xrc
.cq
->usecnt
);
2539 atomic_inc(&attr
.ext
.xrc
.xrcd
->usecnt
);
2542 atomic_inc(&pd
->usecnt
);
2543 atomic_set(&srq
->usecnt
, 0);
2545 obj
->uevent
.uobject
.object
= srq
;
2546 ret
= idr_add_uobj(&ib_uverbs_srq_idr
, &obj
->uevent
.uobject
);
2550 memset(&resp
, 0, sizeof resp
);
2551 resp
.srq_handle
= obj
->uevent
.uobject
.id
;
2552 resp
.max_wr
= attr
.attr
.max_wr
;
2553 resp
.max_sge
= attr
.attr
.max_sge
;
2554 if (cmd
->srq_type
== IB_SRQT_XRC
)
2555 resp
.srqn
= srq
->ext
.xrc
.srq_num
;
2557 if (copy_to_user((void __user
*) (unsigned long) cmd
->response
,
2558 &resp
, sizeof resp
)) {
2563 if (cmd
->srq_type
== IB_SRQT_XRC
) {
2564 put_uobj_read(xrcd_uobj
);
2565 put_cq_read(attr
.ext
.xrc
.cq
);
2569 mutex_lock(&file
->mutex
);
2570 list_add_tail(&obj
->uevent
.uobject
.list
, &file
->ucontext
->srq_list
);
2571 mutex_unlock(&file
->mutex
);
2573 obj
->uevent
.uobject
.live
= 1;
2575 up_write(&obj
->uevent
.uobject
.mutex
);
2580 idr_remove_uobj(&ib_uverbs_srq_idr
, &obj
->uevent
.uobject
);
2583 ib_destroy_srq(srq
);
2589 if (cmd
->srq_type
== IB_SRQT_XRC
)
2590 put_cq_read(attr
.ext
.xrc
.cq
);
2593 if (cmd
->srq_type
== IB_SRQT_XRC
) {
2594 atomic_dec(&obj
->uxrcd
->refcnt
);
2595 put_uobj_read(xrcd_uobj
);
2599 put_uobj_write(&obj
->uevent
.uobject
);
2603 ssize_t
ib_uverbs_create_srq(struct ib_uverbs_file
*file
,
2604 const char __user
*buf
, int in_len
,
2607 struct ib_uverbs_create_srq cmd
;
2608 struct ib_uverbs_create_xsrq xcmd
;
2609 struct ib_uverbs_create_srq_resp resp
;
2610 struct ib_udata udata
;
2613 if (out_len
< sizeof resp
)
2616 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2619 xcmd
.response
= cmd
.response
;
2620 xcmd
.user_handle
= cmd
.user_handle
;
2621 xcmd
.srq_type
= IB_SRQT_BASIC
;
2622 xcmd
.pd_handle
= cmd
.pd_handle
;
2623 xcmd
.max_wr
= cmd
.max_wr
;
2624 xcmd
.max_sge
= cmd
.max_sge
;
2625 xcmd
.srq_limit
= cmd
.srq_limit
;
2627 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
2628 (unsigned long) cmd
.response
+ sizeof resp
,
2629 in_len
- sizeof cmd
, out_len
- sizeof resp
);
2631 ret
= __uverbs_create_xsrq(file
, &xcmd
, &udata
);
2638 ssize_t
ib_uverbs_create_xsrq(struct ib_uverbs_file
*file
,
2639 const char __user
*buf
, int in_len
, int out_len
)
2641 struct ib_uverbs_create_xsrq cmd
;
2642 struct ib_uverbs_create_srq_resp resp
;
2643 struct ib_udata udata
;
2646 if (out_len
< sizeof resp
)
2649 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2652 INIT_UDATA(&udata
, buf
+ sizeof cmd
,
2653 (unsigned long) cmd
.response
+ sizeof resp
,
2654 in_len
- sizeof cmd
, out_len
- sizeof resp
);
2656 ret
= __uverbs_create_xsrq(file
, &cmd
, &udata
);
2663 ssize_t
ib_uverbs_modify_srq(struct ib_uverbs_file
*file
,
2664 const char __user
*buf
, int in_len
,
2667 struct ib_uverbs_modify_srq cmd
;
2668 struct ib_udata udata
;
2670 struct ib_srq_attr attr
;
2673 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2676 INIT_UDATA(&udata
, buf
+ sizeof cmd
, NULL
, in_len
- sizeof cmd
,
2679 srq
= idr_read_srq(cmd
.srq_handle
, file
->ucontext
);
2683 attr
.max_wr
= cmd
.max_wr
;
2684 attr
.srq_limit
= cmd
.srq_limit
;
2686 ret
= srq
->device
->modify_srq(srq
, &attr
, cmd
.attr_mask
, &udata
);
2690 return ret
? ret
: in_len
;
2693 ssize_t
ib_uverbs_query_srq(struct ib_uverbs_file
*file
,
2694 const char __user
*buf
,
2695 int in_len
, int out_len
)
2697 struct ib_uverbs_query_srq cmd
;
2698 struct ib_uverbs_query_srq_resp resp
;
2699 struct ib_srq_attr attr
;
2703 if (out_len
< sizeof resp
)
2706 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2709 srq
= idr_read_srq(cmd
.srq_handle
, file
->ucontext
);
2713 ret
= ib_query_srq(srq
, &attr
);
2720 memset(&resp
, 0, sizeof resp
);
2722 resp
.max_wr
= attr
.max_wr
;
2723 resp
.max_sge
= attr
.max_sge
;
2724 resp
.srq_limit
= attr
.srq_limit
;
2726 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
2727 &resp
, sizeof resp
))
2733 ssize_t
ib_uverbs_destroy_srq(struct ib_uverbs_file
*file
,
2734 const char __user
*buf
, int in_len
,
2737 struct ib_uverbs_destroy_srq cmd
;
2738 struct ib_uverbs_destroy_srq_resp resp
;
2739 struct ib_uobject
*uobj
;
2741 struct ib_uevent_object
*obj
;
2744 if (copy_from_user(&cmd
, buf
, sizeof cmd
))
2747 uobj
= idr_write_uobj(&ib_uverbs_srq_idr
, cmd
.srq_handle
, file
->ucontext
);
2751 obj
= container_of(uobj
, struct ib_uevent_object
, uobject
);
2753 ret
= ib_destroy_srq(srq
);
2757 put_uobj_write(uobj
);
2762 idr_remove_uobj(&ib_uverbs_srq_idr
, uobj
);
2764 mutex_lock(&file
->mutex
);
2765 list_del(&uobj
->list
);
2766 mutex_unlock(&file
->mutex
);
2768 ib_uverbs_release_uevent(file
, obj
);
2770 memset(&resp
, 0, sizeof resp
);
2771 resp
.events_reported
= obj
->events_reported
;
2775 if (copy_to_user((void __user
*) (unsigned long) cmd
.response
,
2776 &resp
, sizeof resp
))
2779 return ret
? ret
: in_len
;