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>
39 #include <linux/sched.h>
41 #include <asm/uaccess.h>
44 #include "core_priv.h"
46 struct uverbs_lock_class {
47 struct lock_class_key key;
51 static struct uverbs_lock_class pd_lock_class = { .name = "PD-uobj" };
52 static struct uverbs_lock_class mr_lock_class = { .name = "MR-uobj" };
53 static struct uverbs_lock_class mw_lock_class = { .name = "MW-uobj" };
54 static struct uverbs_lock_class cq_lock_class = { .name = "CQ-uobj" };
55 static struct uverbs_lock_class qp_lock_class = { .name = "QP-uobj" };
56 static struct uverbs_lock_class ah_lock_class = { .name = "AH-uobj" };
57 static struct uverbs_lock_class srq_lock_class = { .name = "SRQ-uobj" };
58 static struct uverbs_lock_class xrcd_lock_class = { .name = "XRCD-uobj" };
59 static struct uverbs_lock_class rule_lock_class = { .name = "RULE-uobj" };
62 * The ib_uobject locking scheme is as follows:
64 * - ib_uverbs_idr_lock protects the uverbs idrs themselves, so it
65 * needs to be held during all idr write operations. When an object is
66 * looked up, a reference must be taken on the object's kref before
67 * dropping this lock. For read operations, the rcu_read_lock()
68 * and rcu_write_lock() but similarly the kref reference is grabbed
69 * before the rcu_read_unlock().
71 * - Each object also has an rwsem. This rwsem must be held for
72 * reading while an operation that uses the object is performed.
73 * For example, while registering an MR, the associated PD's
74 * uobject.mutex must be held for reading. The rwsem must be held
75 * for writing while initializing or destroying an object.
77 * - In addition, each object has a "live" flag. If this flag is not
78 * set, then lookups of the object will fail even if it is found in
79 * the idr. This handles a reader that blocks and does not acquire
80 * the rwsem until after the object is destroyed. The destroy
81 * operation will set the live flag to 0 and then drop the rwsem;
82 * this will allow the reader to acquire the rwsem, see that the
83 * live flag is 0, and then drop the rwsem and its reference to
84 * object. The underlying storage will not be freed until the last
85 * reference to the object is dropped.
88 static void init_uobj(struct ib_uobject *uobj, u64 user_handle,
89 struct ib_ucontext *context, struct uverbs_lock_class *c)
91 uobj->user_handle = user_handle;
92 uobj->context = context;
93 kref_init(&uobj->ref);
94 init_rwsem(&uobj->mutex);
95 lockdep_set_class_and_name(&uobj->mutex, &c->key, c->name);
99 static void release_uobj(struct kref *kref)
101 kfree_rcu(container_of(kref, struct ib_uobject, ref), rcu);
104 static void put_uobj(struct ib_uobject *uobj)
106 kref_put(&uobj->ref, release_uobj);
109 static void put_uobj_read(struct ib_uobject *uobj)
111 up_read(&uobj->mutex);
115 static void put_uobj_write(struct ib_uobject *uobj)
117 up_write(&uobj->mutex);
121 static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj)
125 idr_preload(GFP_KERNEL);
126 spin_lock(&ib_uverbs_idr_lock);
128 ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT);
132 spin_unlock(&ib_uverbs_idr_lock);
135 return ret < 0 ? ret : 0;
138 void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj)
140 spin_lock(&ib_uverbs_idr_lock);
141 idr_remove(idr, uobj->id);
142 spin_unlock(&ib_uverbs_idr_lock);
145 static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id,
146 struct ib_ucontext *context)
148 struct ib_uobject *uobj;
151 uobj = idr_find(idr, id);
153 if (uobj->context == context)
154 kref_get(&uobj->ref);
163 static struct ib_uobject *idr_read_uobj(struct idr *idr, int id,
164 struct ib_ucontext *context, int nested)
166 struct ib_uobject *uobj;
168 uobj = __idr_get_uobj(idr, id, context);
173 down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING);
175 down_read(&uobj->mutex);
184 static struct ib_uobject *idr_write_uobj(struct idr *idr, int id,
185 struct ib_ucontext *context)
187 struct ib_uobject *uobj;
189 uobj = __idr_get_uobj(idr, id, context);
193 down_write(&uobj->mutex);
195 put_uobj_write(uobj);
202 static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context,
205 struct ib_uobject *uobj;
207 uobj = idr_read_uobj(idr, id, context, nested);
208 return uobj ? uobj->object : NULL;
211 static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context)
213 return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0);
216 static void put_pd_read(struct ib_pd *pd)
218 put_uobj_read(pd->uobject);
221 static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested)
223 return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested);
226 static void put_cq_read(struct ib_cq *cq)
228 put_uobj_read(cq->uobject);
231 static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context)
233 return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0);
236 static void put_ah_read(struct ib_ah *ah)
238 put_uobj_read(ah->uobject);
241 static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context)
243 return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0);
246 static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context)
248 struct ib_uobject *uobj;
250 uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context);
251 return uobj ? uobj->object : NULL;
254 static void put_qp_read(struct ib_qp *qp)
256 put_uobj_read(qp->uobject);
259 static void put_qp_write(struct ib_qp *qp)
261 put_uobj_write(qp->uobject);
264 static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context)
266 return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0);
269 static void put_srq_read(struct ib_srq *srq)
271 put_uobj_read(srq->uobject);
274 static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context,
275 struct ib_uobject **uobj)
277 *uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0);
278 return *uobj ? (*uobj)->object : NULL;
281 static void put_xrcd_read(struct ib_uobject *uobj)
286 ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
287 struct ib_device *ib_dev,
288 const char __user *buf,
289 int in_len, int out_len)
291 struct ib_uverbs_get_context cmd;
292 struct ib_uverbs_get_context_resp resp;
293 struct ib_udata udata;
294 struct ib_ucontext *ucontext;
298 if (out_len < sizeof resp)
301 if (copy_from_user(&cmd, buf, sizeof cmd))
304 mutex_lock(&file->mutex);
306 if (file->ucontext) {
311 INIT_UDATA(&udata, buf + sizeof cmd,
312 (unsigned long) cmd.response + sizeof resp,
313 in_len - sizeof cmd, out_len - sizeof resp);
315 ucontext = ib_dev->alloc_ucontext(ib_dev, &udata);
316 if (IS_ERR(ucontext)) {
317 ret = PTR_ERR(ucontext);
321 ucontext->device = ib_dev;
322 INIT_LIST_HEAD(&ucontext->pd_list);
323 INIT_LIST_HEAD(&ucontext->mr_list);
324 INIT_LIST_HEAD(&ucontext->mw_list);
325 INIT_LIST_HEAD(&ucontext->cq_list);
326 INIT_LIST_HEAD(&ucontext->qp_list);
327 INIT_LIST_HEAD(&ucontext->srq_list);
328 INIT_LIST_HEAD(&ucontext->ah_list);
329 INIT_LIST_HEAD(&ucontext->xrcd_list);
330 INIT_LIST_HEAD(&ucontext->rule_list);
332 ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID);
334 ucontext->closing = 0;
336 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
337 ucontext->umem_tree = RB_ROOT;
338 init_rwsem(&ucontext->umem_rwsem);
339 ucontext->odp_mrs_count = 0;
340 INIT_LIST_HEAD(&ucontext->no_private_counters);
342 if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING))
343 ucontext->invalidate_range = NULL;
347 resp.num_comp_vectors = file->device->num_comp_vectors;
349 ret = get_unused_fd_flags(O_CLOEXEC);
354 filp = ib_uverbs_alloc_event_file(file, ib_dev, 1);
360 if (copy_to_user((void __user *) (unsigned long) cmd.response,
361 &resp, sizeof resp)) {
366 file->ucontext = ucontext;
368 fd_install(resp.async_fd, filp);
370 mutex_unlock(&file->mutex);
375 ib_uverbs_free_async_event_file(file);
379 put_unused_fd(resp.async_fd);
382 put_pid(ucontext->tgid);
383 ib_dev->dealloc_ucontext(ucontext);
386 mutex_unlock(&file->mutex);
390 static void copy_query_dev_fields(struct ib_uverbs_file *file,
391 struct ib_device *ib_dev,
392 struct ib_uverbs_query_device_resp *resp,
393 struct ib_device_attr *attr)
395 resp->fw_ver = attr->fw_ver;
396 resp->node_guid = ib_dev->node_guid;
397 resp->sys_image_guid = attr->sys_image_guid;
398 resp->max_mr_size = attr->max_mr_size;
399 resp->page_size_cap = attr->page_size_cap;
400 resp->vendor_id = attr->vendor_id;
401 resp->vendor_part_id = attr->vendor_part_id;
402 resp->hw_ver = attr->hw_ver;
403 resp->max_qp = attr->max_qp;
404 resp->max_qp_wr = attr->max_qp_wr;
405 resp->device_cap_flags = attr->device_cap_flags;
406 resp->max_sge = attr->max_sge;
407 resp->max_sge_rd = attr->max_sge_rd;
408 resp->max_cq = attr->max_cq;
409 resp->max_cqe = attr->max_cqe;
410 resp->max_mr = attr->max_mr;
411 resp->max_pd = attr->max_pd;
412 resp->max_qp_rd_atom = attr->max_qp_rd_atom;
413 resp->max_ee_rd_atom = attr->max_ee_rd_atom;
414 resp->max_res_rd_atom = attr->max_res_rd_atom;
415 resp->max_qp_init_rd_atom = attr->max_qp_init_rd_atom;
416 resp->max_ee_init_rd_atom = attr->max_ee_init_rd_atom;
417 resp->atomic_cap = attr->atomic_cap;
418 resp->max_ee = attr->max_ee;
419 resp->max_rdd = attr->max_rdd;
420 resp->max_mw = attr->max_mw;
421 resp->max_raw_ipv6_qp = attr->max_raw_ipv6_qp;
422 resp->max_raw_ethy_qp = attr->max_raw_ethy_qp;
423 resp->max_mcast_grp = attr->max_mcast_grp;
424 resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
425 resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
426 resp->max_ah = attr->max_ah;
427 resp->max_fmr = attr->max_fmr;
428 resp->max_map_per_fmr = attr->max_map_per_fmr;
429 resp->max_srq = attr->max_srq;
430 resp->max_srq_wr = attr->max_srq_wr;
431 resp->max_srq_sge = attr->max_srq_sge;
432 resp->max_pkeys = attr->max_pkeys;
433 resp->local_ca_ack_delay = attr->local_ca_ack_delay;
434 resp->phys_port_cnt = ib_dev->phys_port_cnt;
437 ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
438 struct ib_device *ib_dev,
439 const char __user *buf,
440 int in_len, int out_len)
442 struct ib_uverbs_query_device cmd;
443 struct ib_uverbs_query_device_resp resp;
445 if (out_len < sizeof resp)
448 if (copy_from_user(&cmd, buf, sizeof cmd))
451 memset(&resp, 0, sizeof resp);
452 copy_query_dev_fields(file, ib_dev, &resp, &ib_dev->attrs);
454 if (copy_to_user((void __user *) (unsigned long) cmd.response,
461 ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file,
462 struct ib_device *ib_dev,
463 const char __user *buf,
464 int in_len, int out_len)
466 struct ib_uverbs_query_port cmd;
467 struct ib_uverbs_query_port_resp resp;
468 struct ib_port_attr attr;
471 if (out_len < sizeof resp)
474 if (copy_from_user(&cmd, buf, sizeof cmd))
477 ret = ib_query_port(ib_dev, cmd.port_num, &attr);
481 memset(&resp, 0, sizeof resp);
483 resp.state = attr.state;
484 resp.max_mtu = attr.max_mtu;
485 resp.active_mtu = attr.active_mtu;
486 resp.gid_tbl_len = attr.gid_tbl_len;
487 resp.port_cap_flags = attr.port_cap_flags;
488 resp.max_msg_sz = attr.max_msg_sz;
489 resp.bad_pkey_cntr = attr.bad_pkey_cntr;
490 resp.qkey_viol_cntr = attr.qkey_viol_cntr;
491 resp.pkey_tbl_len = attr.pkey_tbl_len;
493 resp.sm_lid = attr.sm_lid;
495 resp.max_vl_num = attr.max_vl_num;
496 resp.sm_sl = attr.sm_sl;
497 resp.subnet_timeout = attr.subnet_timeout;
498 resp.init_type_reply = attr.init_type_reply;
499 resp.active_width = attr.active_width;
500 resp.active_speed = attr.active_speed;
501 resp.phys_state = attr.phys_state;
502 resp.link_layer = rdma_port_get_link_layer(ib_dev,
505 if (copy_to_user((void __user *) (unsigned long) cmd.response,
512 ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
513 struct ib_device *ib_dev,
514 const char __user *buf,
515 int in_len, int out_len)
517 struct ib_uverbs_alloc_pd cmd;
518 struct ib_uverbs_alloc_pd_resp resp;
519 struct ib_udata udata;
520 struct ib_uobject *uobj;
524 if (out_len < sizeof resp)
527 if (copy_from_user(&cmd, buf, sizeof cmd))
530 INIT_UDATA(&udata, buf + sizeof cmd,
531 (unsigned long) cmd.response + sizeof resp,
532 in_len - sizeof cmd, out_len - sizeof resp);
534 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
538 init_uobj(uobj, 0, file->ucontext, &pd_lock_class);
539 down_write(&uobj->mutex);
541 pd = ib_dev->alloc_pd(ib_dev, file->ucontext, &udata);
550 atomic_set(&pd->usecnt, 0);
553 ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj);
557 memset(&resp, 0, sizeof resp);
558 resp.pd_handle = uobj->id;
560 if (copy_to_user((void __user *) (unsigned long) cmd.response,
561 &resp, sizeof resp)) {
566 mutex_lock(&file->mutex);
567 list_add_tail(&uobj->list, &file->ucontext->pd_list);
568 mutex_unlock(&file->mutex);
572 up_write(&uobj->mutex);
577 idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
583 put_uobj_write(uobj);
587 ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
588 struct ib_device *ib_dev,
589 const char __user *buf,
590 int in_len, int out_len)
592 struct ib_uverbs_dealloc_pd cmd;
593 struct ib_uobject *uobj;
597 if (copy_from_user(&cmd, buf, sizeof cmd))
600 uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext);
605 if (atomic_read(&pd->usecnt)) {
610 ret = pd->device->dealloc_pd(uobj->object);
611 WARN_ONCE(ret, "Infiniband HW driver failed dealloc_pd");
616 put_uobj_write(uobj);
618 idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
620 mutex_lock(&file->mutex);
621 list_del(&uobj->list);
622 mutex_unlock(&file->mutex);
629 put_uobj_write(uobj);
633 struct xrcd_table_entry {
635 struct ib_xrcd *xrcd;
639 static int xrcd_table_insert(struct ib_uverbs_device *dev,
641 struct ib_xrcd *xrcd)
643 struct xrcd_table_entry *entry, *scan;
644 struct rb_node **p = &dev->xrcd_tree.rb_node;
645 struct rb_node *parent = NULL;
647 entry = kmalloc(sizeof *entry, GFP_KERNEL);
652 entry->inode = inode;
656 scan = rb_entry(parent, struct xrcd_table_entry, node);
658 if (inode < scan->inode) {
660 } else if (inode > scan->inode) {
668 rb_link_node(&entry->node, parent, p);
669 rb_insert_color(&entry->node, &dev->xrcd_tree);
674 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
677 struct xrcd_table_entry *entry;
678 struct rb_node *p = dev->xrcd_tree.rb_node;
681 entry = rb_entry(p, struct xrcd_table_entry, node);
683 if (inode < entry->inode)
685 else if (inode > entry->inode)
694 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
696 struct xrcd_table_entry *entry;
698 entry = xrcd_table_search(dev, inode);
705 static void xrcd_table_delete(struct ib_uverbs_device *dev,
708 struct xrcd_table_entry *entry;
710 entry = xrcd_table_search(dev, inode);
713 rb_erase(&entry->node, &dev->xrcd_tree);
718 ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file,
719 struct ib_device *ib_dev,
720 const char __user *buf, int in_len,
723 struct ib_uverbs_open_xrcd cmd;
724 struct ib_uverbs_open_xrcd_resp resp;
725 struct ib_udata udata;
726 struct ib_uxrcd_object *obj;
727 struct ib_xrcd *xrcd = NULL;
728 struct fd f = {NULL, 0};
729 struct inode *inode = NULL;
733 if (out_len < sizeof resp)
736 if (copy_from_user(&cmd, buf, sizeof cmd))
739 INIT_UDATA(&udata, buf + sizeof cmd,
740 (unsigned long) cmd.response + sizeof resp,
741 in_len - sizeof cmd, out_len - sizeof resp);
743 mutex_lock(&file->device->xrcd_tree_mutex);
746 /* search for file descriptor */
750 goto err_tree_mutex_unlock;
753 inode = file_inode(f.file);
754 xrcd = find_xrcd(file->device, inode);
755 if (!xrcd && !(cmd.oflags & O_CREAT)) {
756 /* no file descriptor. Need CREATE flag */
758 goto err_tree_mutex_unlock;
761 if (xrcd && cmd.oflags & O_EXCL) {
763 goto err_tree_mutex_unlock;
767 obj = kmalloc(sizeof *obj, GFP_KERNEL);
770 goto err_tree_mutex_unlock;
773 init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_class);
775 down_write(&obj->uobject.mutex);
778 xrcd = ib_dev->alloc_xrcd(ib_dev, file->ucontext, &udata);
785 xrcd->device = ib_dev;
786 atomic_set(&xrcd->usecnt, 0);
787 mutex_init(&xrcd->tgt_qp_mutex);
788 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
792 atomic_set(&obj->refcnt, 0);
793 obj->uobject.object = xrcd;
794 ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject);
798 memset(&resp, 0, sizeof resp);
799 resp.xrcd_handle = obj->uobject.id;
803 /* create new inode/xrcd table entry */
804 ret = xrcd_table_insert(file->device, inode, xrcd);
806 goto err_insert_xrcd;
808 atomic_inc(&xrcd->usecnt);
811 if (copy_to_user((void __user *) (unsigned long) cmd.response,
812 &resp, sizeof resp)) {
820 mutex_lock(&file->mutex);
821 list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list);
822 mutex_unlock(&file->mutex);
824 obj->uobject.live = 1;
825 up_write(&obj->uobject.mutex);
827 mutex_unlock(&file->device->xrcd_tree_mutex);
833 xrcd_table_delete(file->device, inode);
834 atomic_dec(&xrcd->usecnt);
838 idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject);
841 ib_dealloc_xrcd(xrcd);
844 put_uobj_write(&obj->uobject);
846 err_tree_mutex_unlock:
850 mutex_unlock(&file->device->xrcd_tree_mutex);
855 ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file,
856 struct ib_device *ib_dev,
857 const char __user *buf, int in_len,
860 struct ib_uverbs_close_xrcd cmd;
861 struct ib_uobject *uobj;
862 struct ib_xrcd *xrcd = NULL;
863 struct inode *inode = NULL;
864 struct ib_uxrcd_object *obj;
868 if (copy_from_user(&cmd, buf, sizeof cmd))
871 mutex_lock(&file->device->xrcd_tree_mutex);
872 uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext);
880 obj = container_of(uobj, struct ib_uxrcd_object, uobject);
881 if (atomic_read(&obj->refcnt)) {
882 put_uobj_write(uobj);
887 if (!inode || atomic_dec_and_test(&xrcd->usecnt)) {
888 ret = ib_dealloc_xrcd(uobj->object);
895 atomic_inc(&xrcd->usecnt);
897 put_uobj_write(uobj);
903 xrcd_table_delete(file->device, inode);
905 idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj);
906 mutex_lock(&file->mutex);
907 list_del(&uobj->list);
908 mutex_unlock(&file->mutex);
914 mutex_unlock(&file->device->xrcd_tree_mutex);
918 void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev,
919 struct ib_xrcd *xrcd)
924 if (inode && !atomic_dec_and_test(&xrcd->usecnt))
927 ib_dealloc_xrcd(xrcd);
930 xrcd_table_delete(dev, inode);
933 ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
934 struct ib_device *ib_dev,
935 const char __user *buf, int in_len,
938 struct ib_uverbs_reg_mr cmd;
939 struct ib_uverbs_reg_mr_resp resp;
940 struct ib_udata udata;
941 struct ib_uobject *uobj;
946 if (out_len < sizeof resp)
949 if (copy_from_user(&cmd, buf, sizeof cmd))
952 INIT_UDATA(&udata, buf + sizeof cmd,
953 (unsigned long) cmd.response + sizeof resp,
954 in_len - sizeof cmd, out_len - sizeof resp);
956 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
959 ret = ib_check_mr_access(cmd.access_flags);
963 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
967 init_uobj(uobj, 0, file->ucontext, &mr_lock_class);
968 down_write(&uobj->mutex);
970 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
976 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) {
977 if (!(pd->device->attrs.device_cap_flags &
978 IB_DEVICE_ON_DEMAND_PAGING)) {
979 pr_debug("ODP support not available\n");
985 mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
986 cmd.access_flags, &udata);
992 mr->device = pd->device;
995 atomic_inc(&pd->usecnt);
998 ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj);
1002 memset(&resp, 0, sizeof resp);
1003 resp.lkey = mr->lkey;
1004 resp.rkey = mr->rkey;
1005 resp.mr_handle = uobj->id;
1007 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1008 &resp, sizeof resp)) {
1015 mutex_lock(&file->mutex);
1016 list_add_tail(&uobj->list, &file->ucontext->mr_list);
1017 mutex_unlock(&file->mutex);
1021 up_write(&uobj->mutex);
1026 idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
1035 put_uobj_write(uobj);
1039 ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file,
1040 struct ib_device *ib_dev,
1041 const char __user *buf, int in_len,
1044 struct ib_uverbs_rereg_mr cmd;
1045 struct ib_uverbs_rereg_mr_resp resp;
1046 struct ib_udata udata;
1047 struct ib_pd *pd = NULL;
1049 struct ib_pd *old_pd;
1051 struct ib_uobject *uobj;
1053 if (out_len < sizeof(resp))
1056 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1059 INIT_UDATA(&udata, buf + sizeof(cmd),
1060 (unsigned long) cmd.response + sizeof(resp),
1061 in_len - sizeof(cmd), out_len - sizeof(resp));
1063 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags)
1066 if ((cmd.flags & IB_MR_REREG_TRANS) &&
1067 (!cmd.start || !cmd.hca_va || 0 >= cmd.length ||
1068 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)))
1071 uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle,
1079 if (cmd.flags & IB_MR_REREG_ACCESS) {
1080 ret = ib_check_mr_access(cmd.access_flags);
1085 if (cmd.flags & IB_MR_REREG_PD) {
1086 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
1094 ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start,
1095 cmd.length, cmd.hca_va,
1096 cmd.access_flags, pd, &udata);
1098 if (cmd.flags & IB_MR_REREG_PD) {
1099 atomic_inc(&pd->usecnt);
1101 atomic_dec(&old_pd->usecnt);
1107 memset(&resp, 0, sizeof(resp));
1108 resp.lkey = mr->lkey;
1109 resp.rkey = mr->rkey;
1111 if (copy_to_user((void __user *)(unsigned long)cmd.response,
1112 &resp, sizeof(resp)))
1118 if (cmd.flags & IB_MR_REREG_PD)
1123 put_uobj_write(mr->uobject);
1128 ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
1129 struct ib_device *ib_dev,
1130 const char __user *buf, int in_len,
1133 struct ib_uverbs_dereg_mr cmd;
1135 struct ib_uobject *uobj;
1138 if (copy_from_user(&cmd, buf, sizeof cmd))
1141 uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext);
1147 ret = ib_dereg_mr(mr);
1151 put_uobj_write(uobj);
1156 idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
1158 mutex_lock(&file->mutex);
1159 list_del(&uobj->list);
1160 mutex_unlock(&file->mutex);
1167 ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file,
1168 struct ib_device *ib_dev,
1169 const char __user *buf, int in_len,
1172 struct ib_uverbs_alloc_mw cmd;
1173 struct ib_uverbs_alloc_mw_resp resp;
1174 struct ib_uobject *uobj;
1179 if (out_len < sizeof(resp))
1182 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1185 uobj = kmalloc(sizeof(*uobj), GFP_KERNEL);
1189 init_uobj(uobj, 0, file->ucontext, &mw_lock_class);
1190 down_write(&uobj->mutex);
1192 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
1198 mw = pd->device->alloc_mw(pd, cmd.mw_type);
1204 mw->device = pd->device;
1207 atomic_inc(&pd->usecnt);
1210 ret = idr_add_uobj(&ib_uverbs_mw_idr, uobj);
1214 memset(&resp, 0, sizeof(resp));
1215 resp.rkey = mw->rkey;
1216 resp.mw_handle = uobj->id;
1218 if (copy_to_user((void __user *)(unsigned long)cmd.response,
1219 &resp, sizeof(resp))) {
1226 mutex_lock(&file->mutex);
1227 list_add_tail(&uobj->list, &file->ucontext->mw_list);
1228 mutex_unlock(&file->mutex);
1232 up_write(&uobj->mutex);
1237 idr_remove_uobj(&ib_uverbs_mw_idr, uobj);
1240 uverbs_dealloc_mw(mw);
1246 put_uobj_write(uobj);
1250 ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file,
1251 struct ib_device *ib_dev,
1252 const char __user *buf, int in_len,
1255 struct ib_uverbs_dealloc_mw cmd;
1257 struct ib_uobject *uobj;
1260 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1263 uobj = idr_write_uobj(&ib_uverbs_mw_idr, cmd.mw_handle, file->ucontext);
1269 ret = uverbs_dealloc_mw(mw);
1273 put_uobj_write(uobj);
1278 idr_remove_uobj(&ib_uverbs_mw_idr, uobj);
1280 mutex_lock(&file->mutex);
1281 list_del(&uobj->list);
1282 mutex_unlock(&file->mutex);
1289 ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
1290 struct ib_device *ib_dev,
1291 const char __user *buf, int in_len,
1294 struct ib_uverbs_create_comp_channel cmd;
1295 struct ib_uverbs_create_comp_channel_resp resp;
1299 if (out_len < sizeof resp)
1302 if (copy_from_user(&cmd, buf, sizeof cmd))
1305 ret = get_unused_fd_flags(O_CLOEXEC);
1310 filp = ib_uverbs_alloc_event_file(file, ib_dev, 0);
1312 put_unused_fd(resp.fd);
1313 return PTR_ERR(filp);
1316 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1317 &resp, sizeof resp)) {
1318 put_unused_fd(resp.fd);
1323 fd_install(resp.fd, filp);
1327 static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file,
1328 struct ib_device *ib_dev,
1329 struct ib_udata *ucore,
1330 struct ib_udata *uhw,
1331 struct ib_uverbs_ex_create_cq *cmd,
1333 int (*cb)(struct ib_uverbs_file *file,
1334 struct ib_ucq_object *obj,
1335 struct ib_uverbs_ex_create_cq_resp *resp,
1336 struct ib_udata *udata,
1340 struct ib_ucq_object *obj;
1341 struct ib_uverbs_event_file *ev_file = NULL;
1344 struct ib_uverbs_ex_create_cq_resp resp;
1345 struct ib_cq_init_attr attr = {};
1347 if (cmd->comp_vector >= file->device->num_comp_vectors)
1348 return ERR_PTR(-EINVAL);
1350 obj = kmalloc(sizeof *obj, GFP_KERNEL);
1352 return ERR_PTR(-ENOMEM);
1354 init_uobj(&obj->uobject, cmd->user_handle, file->ucontext, &cq_lock_class);
1355 down_write(&obj->uobject.mutex);
1357 if (cmd->comp_channel >= 0) {
1358 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel);
1365 obj->uverbs_file = file;
1366 obj->comp_events_reported = 0;
1367 obj->async_events_reported = 0;
1368 INIT_LIST_HEAD(&obj->comp_list);
1369 INIT_LIST_HEAD(&obj->async_list);
1371 attr.cqe = cmd->cqe;
1372 attr.comp_vector = cmd->comp_vector;
1374 if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags))
1375 attr.flags = cmd->flags;
1377 cq = ib_dev->create_cq(ib_dev, &attr,
1378 file->ucontext, uhw);
1384 cq->device = ib_dev;
1385 cq->uobject = &obj->uobject;
1386 cq->comp_handler = ib_uverbs_comp_handler;
1387 cq->event_handler = ib_uverbs_cq_event_handler;
1388 cq->cq_context = ev_file;
1389 atomic_set(&cq->usecnt, 0);
1391 obj->uobject.object = cq;
1392 ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject);
1396 memset(&resp, 0, sizeof resp);
1397 resp.base.cq_handle = obj->uobject.id;
1398 resp.base.cqe = cq->cqe;
1400 resp.response_length = offsetof(typeof(resp), response_length) +
1401 sizeof(resp.response_length);
1403 ret = cb(file, obj, &resp, ucore, context);
1407 mutex_lock(&file->mutex);
1408 list_add_tail(&obj->uobject.list, &file->ucontext->cq_list);
1409 mutex_unlock(&file->mutex);
1411 obj->uobject.live = 1;
1413 up_write(&obj->uobject.mutex);
1418 idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject);
1425 ib_uverbs_release_ucq(file, ev_file, obj);
1428 put_uobj_write(&obj->uobject);
1430 return ERR_PTR(ret);
1433 static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file,
1434 struct ib_ucq_object *obj,
1435 struct ib_uverbs_ex_create_cq_resp *resp,
1436 struct ib_udata *ucore, void *context)
1438 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1444 ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
1445 struct ib_device *ib_dev,
1446 const char __user *buf, int in_len,
1449 struct ib_uverbs_create_cq cmd;
1450 struct ib_uverbs_ex_create_cq cmd_ex;
1451 struct ib_uverbs_create_cq_resp resp;
1452 struct ib_udata ucore;
1453 struct ib_udata uhw;
1454 struct ib_ucq_object *obj;
1456 if (out_len < sizeof(resp))
1459 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1462 INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd), sizeof(resp));
1464 INIT_UDATA(&uhw, buf + sizeof(cmd),
1465 (unsigned long)cmd.response + sizeof(resp),
1466 in_len - sizeof(cmd), out_len - sizeof(resp));
1468 memset(&cmd_ex, 0, sizeof(cmd_ex));
1469 cmd_ex.user_handle = cmd.user_handle;
1470 cmd_ex.cqe = cmd.cqe;
1471 cmd_ex.comp_vector = cmd.comp_vector;
1472 cmd_ex.comp_channel = cmd.comp_channel;
1474 obj = create_cq(file, ib_dev, &ucore, &uhw, &cmd_ex,
1475 offsetof(typeof(cmd_ex), comp_channel) +
1476 sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb,
1480 return PTR_ERR(obj);
1485 static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file,
1486 struct ib_ucq_object *obj,
1487 struct ib_uverbs_ex_create_cq_resp *resp,
1488 struct ib_udata *ucore, void *context)
1490 if (ib_copy_to_udata(ucore, resp, resp->response_length))
1496 int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file,
1497 struct ib_device *ib_dev,
1498 struct ib_udata *ucore,
1499 struct ib_udata *uhw)
1501 struct ib_uverbs_ex_create_cq_resp resp;
1502 struct ib_uverbs_ex_create_cq cmd;
1503 struct ib_ucq_object *obj;
1506 if (ucore->inlen < sizeof(cmd))
1509 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
1519 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
1520 sizeof(resp.response_length)))
1523 obj = create_cq(file, ib_dev, ucore, uhw, &cmd,
1524 min(ucore->inlen, sizeof(cmd)),
1525 ib_uverbs_ex_create_cq_cb, NULL);
1528 return PTR_ERR(obj);
1533 ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
1534 struct ib_device *ib_dev,
1535 const char __user *buf, int in_len,
1538 struct ib_uverbs_resize_cq cmd;
1539 struct ib_uverbs_resize_cq_resp resp;
1540 struct ib_udata udata;
1544 if (copy_from_user(&cmd, buf, sizeof cmd))
1547 INIT_UDATA(&udata, buf + sizeof cmd,
1548 (unsigned long) cmd.response + sizeof resp,
1549 in_len - sizeof cmd, out_len - sizeof resp);
1551 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
1555 ret = cq->device->resize_cq(cq, cmd.cqe, &udata);
1561 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1562 &resp, sizeof resp.cqe))
1568 return ret ? ret : in_len;
1571 static int copy_wc_to_user(void __user *dest, struct ib_wc *wc)
1573 struct ib_uverbs_wc tmp;
1575 tmp.wr_id = wc->wr_id;
1576 tmp.status = wc->status;
1577 tmp.opcode = wc->opcode;
1578 tmp.vendor_err = wc->vendor_err;
1579 tmp.byte_len = wc->byte_len;
1580 tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data;
1581 tmp.qp_num = wc->qp->qp_num;
1582 tmp.src_qp = wc->src_qp;
1583 tmp.wc_flags = wc->wc_flags;
1584 tmp.pkey_index = wc->pkey_index;
1585 tmp.slid = wc->slid;
1587 tmp.dlid_path_bits = wc->dlid_path_bits;
1588 tmp.port_num = wc->port_num;
1591 if (copy_to_user(dest, &tmp, sizeof tmp))
1597 ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
1598 struct ib_device *ib_dev,
1599 const char __user *buf, int in_len,
1602 struct ib_uverbs_poll_cq cmd;
1603 struct ib_uverbs_poll_cq_resp resp;
1604 u8 __user *header_ptr;
1605 u8 __user *data_ptr;
1610 if (copy_from_user(&cmd, buf, sizeof cmd))
1613 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
1617 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1618 header_ptr = (void __user *)(unsigned long) cmd.response;
1619 data_ptr = header_ptr + sizeof resp;
1621 memset(&resp, 0, sizeof resp);
1622 while (resp.count < cmd.ne) {
1623 ret = ib_poll_cq(cq, 1, &wc);
1629 ret = copy_wc_to_user(data_ptr, &wc);
1633 data_ptr += sizeof(struct ib_uverbs_wc);
1637 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1649 ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
1650 struct ib_device *ib_dev,
1651 const char __user *buf, int in_len,
1654 struct ib_uverbs_req_notify_cq cmd;
1657 if (copy_from_user(&cmd, buf, sizeof cmd))
1660 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
1664 ib_req_notify_cq(cq, cmd.solicited_only ?
1665 IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
1672 ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
1673 struct ib_device *ib_dev,
1674 const char __user *buf, int in_len,
1677 struct ib_uverbs_destroy_cq cmd;
1678 struct ib_uverbs_destroy_cq_resp resp;
1679 struct ib_uobject *uobj;
1681 struct ib_ucq_object *obj;
1682 struct ib_uverbs_event_file *ev_file;
1685 if (copy_from_user(&cmd, buf, sizeof cmd))
1688 uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext);
1692 ev_file = cq->cq_context;
1693 obj = container_of(cq->uobject, struct ib_ucq_object, uobject);
1695 ret = ib_destroy_cq(cq);
1699 put_uobj_write(uobj);
1704 idr_remove_uobj(&ib_uverbs_cq_idr, uobj);
1706 mutex_lock(&file->mutex);
1707 list_del(&uobj->list);
1708 mutex_unlock(&file->mutex);
1710 ib_uverbs_release_ucq(file, ev_file, obj);
1712 memset(&resp, 0, sizeof resp);
1713 resp.comp_events_reported = obj->comp_events_reported;
1714 resp.async_events_reported = obj->async_events_reported;
1718 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1719 &resp, sizeof resp))
1725 static int create_qp(struct ib_uverbs_file *file,
1726 struct ib_udata *ucore,
1727 struct ib_udata *uhw,
1728 struct ib_uverbs_ex_create_qp *cmd,
1730 int (*cb)(struct ib_uverbs_file *file,
1731 struct ib_uverbs_ex_create_qp_resp *resp,
1732 struct ib_udata *udata),
1735 struct ib_uqp_object *obj;
1736 struct ib_device *device;
1737 struct ib_pd *pd = NULL;
1738 struct ib_xrcd *xrcd = NULL;
1739 struct ib_uobject *uninitialized_var(xrcd_uobj);
1740 struct ib_cq *scq = NULL, *rcq = NULL;
1741 struct ib_srq *srq = NULL;
1744 struct ib_qp_init_attr attr;
1745 struct ib_uverbs_ex_create_qp_resp resp;
1748 if (cmd->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
1751 obj = kzalloc(sizeof *obj, GFP_KERNEL);
1755 init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext,
1757 down_write(&obj->uevent.uobject.mutex);
1759 if (cmd->qp_type == IB_QPT_XRC_TGT) {
1760 xrcd = idr_read_xrcd(cmd->pd_handle, file->ucontext,
1766 device = xrcd->device;
1768 if (cmd->qp_type == IB_QPT_XRC_INI) {
1769 cmd->max_recv_wr = 0;
1770 cmd->max_recv_sge = 0;
1773 srq = idr_read_srq(cmd->srq_handle,
1775 if (!srq || srq->srq_type != IB_SRQT_BASIC) {
1781 if (cmd->recv_cq_handle != cmd->send_cq_handle) {
1782 rcq = idr_read_cq(cmd->recv_cq_handle,
1791 scq = idr_read_cq(cmd->send_cq_handle, file->ucontext, !!rcq);
1793 pd = idr_read_pd(cmd->pd_handle, file->ucontext);
1799 device = pd->device;
1802 attr.event_handler = ib_uverbs_qp_event_handler;
1803 attr.qp_context = file;
1808 attr.sq_sig_type = cmd->sq_sig_all ? IB_SIGNAL_ALL_WR :
1810 attr.qp_type = cmd->qp_type;
1811 attr.create_flags = 0;
1813 attr.cap.max_send_wr = cmd->max_send_wr;
1814 attr.cap.max_recv_wr = cmd->max_recv_wr;
1815 attr.cap.max_send_sge = cmd->max_send_sge;
1816 attr.cap.max_recv_sge = cmd->max_recv_sge;
1817 attr.cap.max_inline_data = cmd->max_inline_data;
1819 obj->uevent.events_reported = 0;
1820 INIT_LIST_HEAD(&obj->uevent.event_list);
1821 INIT_LIST_HEAD(&obj->mcast_list);
1823 if (cmd_sz >= offsetof(typeof(*cmd), create_flags) +
1824 sizeof(cmd->create_flags))
1825 attr.create_flags = cmd->create_flags;
1827 if (attr.create_flags & ~(IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
1828 IB_QP_CREATE_CROSS_CHANNEL |
1829 IB_QP_CREATE_MANAGED_SEND |
1830 IB_QP_CREATE_MANAGED_RECV)) {
1835 buf = (void *)cmd + sizeof(*cmd);
1836 if (cmd_sz > sizeof(*cmd))
1837 if (!(buf[0] == 0 && !memcmp(buf, buf + 1,
1838 cmd_sz - sizeof(*cmd) - 1))) {
1843 if (cmd->qp_type == IB_QPT_XRC_TGT)
1844 qp = ib_create_qp(pd, &attr);
1846 qp = device->create_qp(pd, &attr, uhw);
1853 if (cmd->qp_type != IB_QPT_XRC_TGT) {
1855 qp->device = device;
1857 qp->send_cq = attr.send_cq;
1858 qp->recv_cq = attr.recv_cq;
1860 qp->event_handler = attr.event_handler;
1861 qp->qp_context = attr.qp_context;
1862 qp->qp_type = attr.qp_type;
1863 atomic_set(&qp->usecnt, 0);
1864 atomic_inc(&pd->usecnt);
1865 atomic_inc(&attr.send_cq->usecnt);
1867 atomic_inc(&attr.recv_cq->usecnt);
1869 atomic_inc(&attr.srq->usecnt);
1871 qp->uobject = &obj->uevent.uobject;
1873 obj->uevent.uobject.object = qp;
1874 ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
1878 memset(&resp, 0, sizeof resp);
1879 resp.base.qpn = qp->qp_num;
1880 resp.base.qp_handle = obj->uevent.uobject.id;
1881 resp.base.max_recv_sge = attr.cap.max_recv_sge;
1882 resp.base.max_send_sge = attr.cap.max_send_sge;
1883 resp.base.max_recv_wr = attr.cap.max_recv_wr;
1884 resp.base.max_send_wr = attr.cap.max_send_wr;
1885 resp.base.max_inline_data = attr.cap.max_inline_data;
1887 resp.response_length = offsetof(typeof(resp), response_length) +
1888 sizeof(resp.response_length);
1890 ret = cb(file, &resp, ucore);
1895 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1897 atomic_inc(&obj->uxrcd->refcnt);
1898 put_xrcd_read(xrcd_uobj);
1905 if (rcq && rcq != scq)
1910 mutex_lock(&file->mutex);
1911 list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list);
1912 mutex_unlock(&file->mutex);
1914 obj->uevent.uobject.live = 1;
1916 up_write(&obj->uevent.uobject.mutex);
1920 idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
1927 put_xrcd_read(xrcd_uobj);
1932 if (rcq && rcq != scq)
1937 put_uobj_write(&obj->uevent.uobject);
1941 static int ib_uverbs_create_qp_cb(struct ib_uverbs_file *file,
1942 struct ib_uverbs_ex_create_qp_resp *resp,
1943 struct ib_udata *ucore)
1945 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1951 ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
1952 struct ib_device *ib_dev,
1953 const char __user *buf, int in_len,
1956 struct ib_uverbs_create_qp cmd;
1957 struct ib_uverbs_ex_create_qp cmd_ex;
1958 struct ib_udata ucore;
1959 struct ib_udata uhw;
1960 ssize_t resp_size = sizeof(struct ib_uverbs_create_qp_resp);
1963 if (out_len < resp_size)
1966 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1969 INIT_UDATA(&ucore, buf, (unsigned long)cmd.response, sizeof(cmd),
1971 INIT_UDATA(&uhw, buf + sizeof(cmd),
1972 (unsigned long)cmd.response + resp_size,
1973 in_len - sizeof(cmd) - sizeof(struct ib_uverbs_cmd_hdr),
1974 out_len - resp_size);
1976 memset(&cmd_ex, 0, sizeof(cmd_ex));
1977 cmd_ex.user_handle = cmd.user_handle;
1978 cmd_ex.pd_handle = cmd.pd_handle;
1979 cmd_ex.send_cq_handle = cmd.send_cq_handle;
1980 cmd_ex.recv_cq_handle = cmd.recv_cq_handle;
1981 cmd_ex.srq_handle = cmd.srq_handle;
1982 cmd_ex.max_send_wr = cmd.max_send_wr;
1983 cmd_ex.max_recv_wr = cmd.max_recv_wr;
1984 cmd_ex.max_send_sge = cmd.max_send_sge;
1985 cmd_ex.max_recv_sge = cmd.max_recv_sge;
1986 cmd_ex.max_inline_data = cmd.max_inline_data;
1987 cmd_ex.sq_sig_all = cmd.sq_sig_all;
1988 cmd_ex.qp_type = cmd.qp_type;
1989 cmd_ex.is_srq = cmd.is_srq;
1991 err = create_qp(file, &ucore, &uhw, &cmd_ex,
1992 offsetof(typeof(cmd_ex), is_srq) +
1993 sizeof(cmd.is_srq), ib_uverbs_create_qp_cb,
2002 static int ib_uverbs_ex_create_qp_cb(struct ib_uverbs_file *file,
2003 struct ib_uverbs_ex_create_qp_resp *resp,
2004 struct ib_udata *ucore)
2006 if (ib_copy_to_udata(ucore, resp, resp->response_length))
2012 int ib_uverbs_ex_create_qp(struct ib_uverbs_file *file,
2013 struct ib_device *ib_dev,
2014 struct ib_udata *ucore,
2015 struct ib_udata *uhw)
2017 struct ib_uverbs_ex_create_qp_resp resp;
2018 struct ib_uverbs_ex_create_qp cmd = {0};
2021 if (ucore->inlen < (offsetof(typeof(cmd), comp_mask) +
2022 sizeof(cmd.comp_mask)))
2025 err = ib_copy_from_udata(&cmd, ucore, min(sizeof(cmd), ucore->inlen));
2035 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
2036 sizeof(resp.response_length)))
2039 err = create_qp(file, ucore, uhw, &cmd,
2040 min(ucore->inlen, sizeof(cmd)),
2041 ib_uverbs_ex_create_qp_cb, NULL);
2049 ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file,
2050 struct ib_device *ib_dev,
2051 const char __user *buf, int in_len, int out_len)
2053 struct ib_uverbs_open_qp cmd;
2054 struct ib_uverbs_create_qp_resp resp;
2055 struct ib_udata udata;
2056 struct ib_uqp_object *obj;
2057 struct ib_xrcd *xrcd;
2058 struct ib_uobject *uninitialized_var(xrcd_uobj);
2060 struct ib_qp_open_attr attr;
2063 if (out_len < sizeof resp)
2066 if (copy_from_user(&cmd, buf, sizeof cmd))
2069 INIT_UDATA(&udata, buf + sizeof cmd,
2070 (unsigned long) cmd.response + sizeof resp,
2071 in_len - sizeof cmd, out_len - sizeof resp);
2073 obj = kmalloc(sizeof *obj, GFP_KERNEL);
2077 init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class);
2078 down_write(&obj->uevent.uobject.mutex);
2080 xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj);
2086 attr.event_handler = ib_uverbs_qp_event_handler;
2087 attr.qp_context = file;
2088 attr.qp_num = cmd.qpn;
2089 attr.qp_type = cmd.qp_type;
2091 obj->uevent.events_reported = 0;
2092 INIT_LIST_HEAD(&obj->uevent.event_list);
2093 INIT_LIST_HEAD(&obj->mcast_list);
2095 qp = ib_open_qp(xrcd, &attr);
2101 qp->uobject = &obj->uevent.uobject;
2103 obj->uevent.uobject.object = qp;
2104 ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
2108 memset(&resp, 0, sizeof resp);
2109 resp.qpn = qp->qp_num;
2110 resp.qp_handle = obj->uevent.uobject.id;
2112 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2113 &resp, sizeof resp)) {
2118 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
2119 atomic_inc(&obj->uxrcd->refcnt);
2120 put_xrcd_read(xrcd_uobj);
2122 mutex_lock(&file->mutex);
2123 list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list);
2124 mutex_unlock(&file->mutex);
2126 obj->uevent.uobject.live = 1;
2128 up_write(&obj->uevent.uobject.mutex);
2133 idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
2139 put_xrcd_read(xrcd_uobj);
2140 put_uobj_write(&obj->uevent.uobject);
2144 ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
2145 struct ib_device *ib_dev,
2146 const char __user *buf, int in_len,
2149 struct ib_uverbs_query_qp cmd;
2150 struct ib_uverbs_query_qp_resp resp;
2152 struct ib_qp_attr *attr;
2153 struct ib_qp_init_attr *init_attr;
2156 if (copy_from_user(&cmd, buf, sizeof cmd))
2159 attr = kmalloc(sizeof *attr, GFP_KERNEL);
2160 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
2161 if (!attr || !init_attr) {
2166 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
2172 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
2179 memset(&resp, 0, sizeof resp);
2181 resp.qp_state = attr->qp_state;
2182 resp.cur_qp_state = attr->cur_qp_state;
2183 resp.path_mtu = attr->path_mtu;
2184 resp.path_mig_state = attr->path_mig_state;
2185 resp.qkey = attr->qkey;
2186 resp.rq_psn = attr->rq_psn;
2187 resp.sq_psn = attr->sq_psn;
2188 resp.dest_qp_num = attr->dest_qp_num;
2189 resp.qp_access_flags = attr->qp_access_flags;
2190 resp.pkey_index = attr->pkey_index;
2191 resp.alt_pkey_index = attr->alt_pkey_index;
2192 resp.sq_draining = attr->sq_draining;
2193 resp.max_rd_atomic = attr->max_rd_atomic;
2194 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
2195 resp.min_rnr_timer = attr->min_rnr_timer;
2196 resp.port_num = attr->port_num;
2197 resp.timeout = attr->timeout;
2198 resp.retry_cnt = attr->retry_cnt;
2199 resp.rnr_retry = attr->rnr_retry;
2200 resp.alt_port_num = attr->alt_port_num;
2201 resp.alt_timeout = attr->alt_timeout;
2203 memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16);
2204 resp.dest.flow_label = attr->ah_attr.grh.flow_label;
2205 resp.dest.sgid_index = attr->ah_attr.grh.sgid_index;
2206 resp.dest.hop_limit = attr->ah_attr.grh.hop_limit;
2207 resp.dest.traffic_class = attr->ah_attr.grh.traffic_class;
2208 resp.dest.dlid = attr->ah_attr.dlid;
2209 resp.dest.sl = attr->ah_attr.sl;
2210 resp.dest.src_path_bits = attr->ah_attr.src_path_bits;
2211 resp.dest.static_rate = attr->ah_attr.static_rate;
2212 resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH);
2213 resp.dest.port_num = attr->ah_attr.port_num;
2215 memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16);
2216 resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label;
2217 resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index;
2218 resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit;
2219 resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class;
2220 resp.alt_dest.dlid = attr->alt_ah_attr.dlid;
2221 resp.alt_dest.sl = attr->alt_ah_attr.sl;
2222 resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits;
2223 resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate;
2224 resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH);
2225 resp.alt_dest.port_num = attr->alt_ah_attr.port_num;
2227 resp.max_send_wr = init_attr->cap.max_send_wr;
2228 resp.max_recv_wr = init_attr->cap.max_recv_wr;
2229 resp.max_send_sge = init_attr->cap.max_send_sge;
2230 resp.max_recv_sge = init_attr->cap.max_recv_sge;
2231 resp.max_inline_data = init_attr->cap.max_inline_data;
2232 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
2234 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2235 &resp, sizeof resp))
2242 return ret ? ret : in_len;
2245 /* Remove ignored fields set in the attribute mask */
2246 static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
2249 case IB_QPT_XRC_INI:
2250 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
2251 case IB_QPT_XRC_TGT:
2252 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
2259 ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
2260 struct ib_device *ib_dev,
2261 const char __user *buf, int in_len,
2264 struct ib_uverbs_modify_qp cmd;
2265 struct ib_udata udata;
2267 struct ib_qp_attr *attr;
2270 if (copy_from_user(&cmd, buf, sizeof cmd))
2273 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
2276 attr = kmalloc(sizeof *attr, GFP_KERNEL);
2280 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
2286 attr->qp_state = cmd.qp_state;
2287 attr->cur_qp_state = cmd.cur_qp_state;
2288 attr->path_mtu = cmd.path_mtu;
2289 attr->path_mig_state = cmd.path_mig_state;
2290 attr->qkey = cmd.qkey;
2291 attr->rq_psn = cmd.rq_psn;
2292 attr->sq_psn = cmd.sq_psn;
2293 attr->dest_qp_num = cmd.dest_qp_num;
2294 attr->qp_access_flags = cmd.qp_access_flags;
2295 attr->pkey_index = cmd.pkey_index;
2296 attr->alt_pkey_index = cmd.alt_pkey_index;
2297 attr->en_sqd_async_notify = cmd.en_sqd_async_notify;
2298 attr->max_rd_atomic = cmd.max_rd_atomic;
2299 attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic;
2300 attr->min_rnr_timer = cmd.min_rnr_timer;
2301 attr->port_num = cmd.port_num;
2302 attr->timeout = cmd.timeout;
2303 attr->retry_cnt = cmd.retry_cnt;
2304 attr->rnr_retry = cmd.rnr_retry;
2305 attr->alt_port_num = cmd.alt_port_num;
2306 attr->alt_timeout = cmd.alt_timeout;
2308 memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16);
2309 attr->ah_attr.grh.flow_label = cmd.dest.flow_label;
2310 attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index;
2311 attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit;
2312 attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class;
2313 attr->ah_attr.dlid = cmd.dest.dlid;
2314 attr->ah_attr.sl = cmd.dest.sl;
2315 attr->ah_attr.src_path_bits = cmd.dest.src_path_bits;
2316 attr->ah_attr.static_rate = cmd.dest.static_rate;
2317 attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0;
2318 attr->ah_attr.port_num = cmd.dest.port_num;
2320 memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16);
2321 attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label;
2322 attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index;
2323 attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit;
2324 attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class;
2325 attr->alt_ah_attr.dlid = cmd.alt_dest.dlid;
2326 attr->alt_ah_attr.sl = cmd.alt_dest.sl;
2327 attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits;
2328 attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate;
2329 attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0;
2330 attr->alt_ah_attr.port_num = cmd.alt_dest.port_num;
2332 if (qp->real_qp == qp) {
2333 ret = ib_resolve_eth_dmac(qp, attr, &cmd.attr_mask);
2336 ret = qp->device->modify_qp(qp, attr,
2337 modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata);
2339 ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask));
2356 ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
2357 struct ib_device *ib_dev,
2358 const char __user *buf, int in_len,
2361 struct ib_uverbs_destroy_qp cmd;
2362 struct ib_uverbs_destroy_qp_resp resp;
2363 struct ib_uobject *uobj;
2365 struct ib_uqp_object *obj;
2368 if (copy_from_user(&cmd, buf, sizeof cmd))
2371 memset(&resp, 0, sizeof resp);
2373 uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext);
2377 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
2379 if (!list_empty(&obj->mcast_list)) {
2380 put_uobj_write(uobj);
2384 ret = ib_destroy_qp(qp);
2388 put_uobj_write(uobj);
2394 atomic_dec(&obj->uxrcd->refcnt);
2396 idr_remove_uobj(&ib_uverbs_qp_idr, uobj);
2398 mutex_lock(&file->mutex);
2399 list_del(&uobj->list);
2400 mutex_unlock(&file->mutex);
2402 ib_uverbs_release_uevent(file, &obj->uevent);
2404 resp.events_reported = obj->uevent.events_reported;
2408 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2409 &resp, sizeof resp))
2415 static void *alloc_wr(size_t wr_size, __u32 num_sge)
2417 return kmalloc(ALIGN(wr_size, sizeof (struct ib_sge)) +
2418 num_sge * sizeof (struct ib_sge), GFP_KERNEL);
2421 ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
2422 struct ib_device *ib_dev,
2423 const char __user *buf, int in_len,
2426 struct ib_uverbs_post_send cmd;
2427 struct ib_uverbs_post_send_resp resp;
2428 struct ib_uverbs_send_wr *user_wr;
2429 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
2433 ssize_t ret = -EINVAL;
2436 if (copy_from_user(&cmd, buf, sizeof cmd))
2439 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
2440 cmd.sge_count * sizeof (struct ib_uverbs_sge))
2443 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
2446 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2450 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
2454 is_ud = qp->qp_type == IB_QPT_UD;
2457 for (i = 0; i < cmd.wr_count; ++i) {
2458 if (copy_from_user(user_wr,
2459 buf + sizeof cmd + i * cmd.wqe_size,
2465 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2471 struct ib_ud_wr *ud;
2473 if (user_wr->opcode != IB_WR_SEND &&
2474 user_wr->opcode != IB_WR_SEND_WITH_IMM) {
2479 next_size = sizeof(*ud);
2480 ud = alloc_wr(next_size, user_wr->num_sge);
2486 ud->ah = idr_read_ah(user_wr->wr.ud.ah, file->ucontext);
2492 ud->remote_qpn = user_wr->wr.ud.remote_qpn;
2493 ud->remote_qkey = user_wr->wr.ud.remote_qkey;
2496 } else if (user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM ||
2497 user_wr->opcode == IB_WR_RDMA_WRITE ||
2498 user_wr->opcode == IB_WR_RDMA_READ) {
2499 struct ib_rdma_wr *rdma;
2501 next_size = sizeof(*rdma);
2502 rdma = alloc_wr(next_size, user_wr->num_sge);
2508 rdma->remote_addr = user_wr->wr.rdma.remote_addr;
2509 rdma->rkey = user_wr->wr.rdma.rkey;
2512 } else if (user_wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP ||
2513 user_wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
2514 struct ib_atomic_wr *atomic;
2516 next_size = sizeof(*atomic);
2517 atomic = alloc_wr(next_size, user_wr->num_sge);
2523 atomic->remote_addr = user_wr->wr.atomic.remote_addr;
2524 atomic->compare_add = user_wr->wr.atomic.compare_add;
2525 atomic->swap = user_wr->wr.atomic.swap;
2526 atomic->rkey = user_wr->wr.atomic.rkey;
2529 } else if (user_wr->opcode == IB_WR_SEND ||
2530 user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2531 user_wr->opcode == IB_WR_SEND_WITH_INV) {
2532 next_size = sizeof(*next);
2533 next = alloc_wr(next_size, user_wr->num_sge);
2543 if (user_wr->opcode == IB_WR_SEND_WITH_IMM ||
2544 user_wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
2546 (__be32 __force) user_wr->ex.imm_data;
2547 } else if (user_wr->opcode == IB_WR_SEND_WITH_INV) {
2548 next->ex.invalidate_rkey = user_wr->ex.invalidate_rkey;
2558 next->wr_id = user_wr->wr_id;
2559 next->num_sge = user_wr->num_sge;
2560 next->opcode = user_wr->opcode;
2561 next->send_flags = user_wr->send_flags;
2563 if (next->num_sge) {
2564 next->sg_list = (void *) next +
2565 ALIGN(next_size, sizeof(struct ib_sge));
2566 if (copy_from_user(next->sg_list,
2568 cmd.wr_count * cmd.wqe_size +
2569 sg_ind * sizeof (struct ib_sge),
2570 next->num_sge * sizeof (struct ib_sge))) {
2574 sg_ind += next->num_sge;
2576 next->sg_list = NULL;
2580 ret = qp->device->post_send(qp->real_qp, wr, &bad_wr);
2582 for (next = wr; next; next = next->next) {
2588 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2589 &resp, sizeof resp))
2596 if (is_ud && ud_wr(wr)->ah)
2597 put_ah_read(ud_wr(wr)->ah);
2606 return ret ? ret : in_len;
2609 static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
2615 struct ib_uverbs_recv_wr *user_wr;
2616 struct ib_recv_wr *wr = NULL, *last, *next;
2621 if (in_len < wqe_size * wr_count +
2622 sge_count * sizeof (struct ib_uverbs_sge))
2623 return ERR_PTR(-EINVAL);
2625 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
2626 return ERR_PTR(-EINVAL);
2628 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2630 return ERR_PTR(-ENOMEM);
2634 for (i = 0; i < wr_count; ++i) {
2635 if (copy_from_user(user_wr, buf + i * wqe_size,
2641 if (user_wr->num_sge + sg_ind > sge_count) {
2646 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2647 user_wr->num_sge * sizeof (struct ib_sge),
2661 next->wr_id = user_wr->wr_id;
2662 next->num_sge = user_wr->num_sge;
2664 if (next->num_sge) {
2665 next->sg_list = (void *) next +
2666 ALIGN(sizeof *next, sizeof (struct ib_sge));
2667 if (copy_from_user(next->sg_list,
2668 buf + wr_count * wqe_size +
2669 sg_ind * sizeof (struct ib_sge),
2670 next->num_sge * sizeof (struct ib_sge))) {
2674 sg_ind += next->num_sge;
2676 next->sg_list = NULL;
2691 return ERR_PTR(ret);
2694 ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
2695 struct ib_device *ib_dev,
2696 const char __user *buf, int in_len,
2699 struct ib_uverbs_post_recv cmd;
2700 struct ib_uverbs_post_recv_resp resp;
2701 struct ib_recv_wr *wr, *next, *bad_wr;
2703 ssize_t ret = -EINVAL;
2705 if (copy_from_user(&cmd, buf, sizeof cmd))
2708 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2709 in_len - sizeof cmd, cmd.wr_count,
2710 cmd.sge_count, cmd.wqe_size);
2714 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
2719 ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr);
2724 for (next = wr; next; next = next->next) {
2730 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2731 &resp, sizeof resp))
2741 return ret ? ret : in_len;
2744 ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
2745 struct ib_device *ib_dev,
2746 const char __user *buf, int in_len,
2749 struct ib_uverbs_post_srq_recv cmd;
2750 struct ib_uverbs_post_srq_recv_resp resp;
2751 struct ib_recv_wr *wr, *next, *bad_wr;
2753 ssize_t ret = -EINVAL;
2755 if (copy_from_user(&cmd, buf, sizeof cmd))
2758 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2759 in_len - sizeof cmd, cmd.wr_count,
2760 cmd.sge_count, cmd.wqe_size);
2764 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
2769 ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
2774 for (next = wr; next; next = next->next) {
2780 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2781 &resp, sizeof resp))
2791 return ret ? ret : in_len;
2794 ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
2795 struct ib_device *ib_dev,
2796 const char __user *buf, int in_len,
2799 struct ib_uverbs_create_ah cmd;
2800 struct ib_uverbs_create_ah_resp resp;
2801 struct ib_uobject *uobj;
2804 struct ib_ah_attr attr;
2807 if (out_len < sizeof resp)
2810 if (copy_from_user(&cmd, buf, sizeof cmd))
2813 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
2817 init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_class);
2818 down_write(&uobj->mutex);
2820 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
2826 attr.dlid = cmd.attr.dlid;
2827 attr.sl = cmd.attr.sl;
2828 attr.src_path_bits = cmd.attr.src_path_bits;
2829 attr.static_rate = cmd.attr.static_rate;
2830 attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0;
2831 attr.port_num = cmd.attr.port_num;
2832 attr.grh.flow_label = cmd.attr.grh.flow_label;
2833 attr.grh.sgid_index = cmd.attr.grh.sgid_index;
2834 attr.grh.hop_limit = cmd.attr.grh.hop_limit;
2835 attr.grh.traffic_class = cmd.attr.grh.traffic_class;
2836 memset(&attr.dmac, 0, sizeof(attr.dmac));
2837 memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
2839 ah = ib_create_ah(pd, &attr);
2848 ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj);
2852 resp.ah_handle = uobj->id;
2854 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2855 &resp, sizeof resp)) {
2862 mutex_lock(&file->mutex);
2863 list_add_tail(&uobj->list, &file->ucontext->ah_list);
2864 mutex_unlock(&file->mutex);
2868 up_write(&uobj->mutex);
2873 idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
2882 put_uobj_write(uobj);
2886 ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
2887 struct ib_device *ib_dev,
2888 const char __user *buf, int in_len, int out_len)
2890 struct ib_uverbs_destroy_ah cmd;
2892 struct ib_uobject *uobj;
2895 if (copy_from_user(&cmd, buf, sizeof cmd))
2898 uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext);
2903 ret = ib_destroy_ah(ah);
2907 put_uobj_write(uobj);
2912 idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
2914 mutex_lock(&file->mutex);
2915 list_del(&uobj->list);
2916 mutex_unlock(&file->mutex);
2923 ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
2924 struct ib_device *ib_dev,
2925 const char __user *buf, int in_len,
2928 struct ib_uverbs_attach_mcast cmd;
2930 struct ib_uqp_object *obj;
2931 struct ib_uverbs_mcast_entry *mcast;
2934 if (copy_from_user(&cmd, buf, sizeof cmd))
2937 qp = idr_write_qp(cmd.qp_handle, file->ucontext);
2941 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2943 list_for_each_entry(mcast, &obj->mcast_list, list)
2944 if (cmd.mlid == mcast->lid &&
2945 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2950 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2956 mcast->lid = cmd.mlid;
2957 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2959 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2961 list_add_tail(&mcast->list, &obj->mcast_list);
2968 return ret ? ret : in_len;
2971 ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
2972 struct ib_device *ib_dev,
2973 const char __user *buf, int in_len,
2976 struct ib_uverbs_detach_mcast cmd;
2977 struct ib_uqp_object *obj;
2979 struct ib_uverbs_mcast_entry *mcast;
2982 if (copy_from_user(&cmd, buf, sizeof cmd))
2985 qp = idr_write_qp(cmd.qp_handle, file->ucontext);
2989 ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
2993 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2995 list_for_each_entry(mcast, &obj->mcast_list, list)
2996 if (cmd.mlid == mcast->lid &&
2997 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2998 list_del(&mcast->list);
3006 return ret ? ret : in_len;
3009 static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
3010 union ib_flow_spec *ib_spec)
3012 if (kern_spec->reserved)
3015 ib_spec->type = kern_spec->type;
3017 switch (ib_spec->type) {
3018 case IB_FLOW_SPEC_ETH:
3019 ib_spec->eth.size = sizeof(struct ib_flow_spec_eth);
3020 if (ib_spec->eth.size != kern_spec->eth.size)
3022 memcpy(&ib_spec->eth.val, &kern_spec->eth.val,
3023 sizeof(struct ib_flow_eth_filter));
3024 memcpy(&ib_spec->eth.mask, &kern_spec->eth.mask,
3025 sizeof(struct ib_flow_eth_filter));
3027 case IB_FLOW_SPEC_IPV4:
3028 ib_spec->ipv4.size = sizeof(struct ib_flow_spec_ipv4);
3029 if (ib_spec->ipv4.size != kern_spec->ipv4.size)
3031 memcpy(&ib_spec->ipv4.val, &kern_spec->ipv4.val,
3032 sizeof(struct ib_flow_ipv4_filter));
3033 memcpy(&ib_spec->ipv4.mask, &kern_spec->ipv4.mask,
3034 sizeof(struct ib_flow_ipv4_filter));
3036 case IB_FLOW_SPEC_TCP:
3037 case IB_FLOW_SPEC_UDP:
3038 ib_spec->tcp_udp.size = sizeof(struct ib_flow_spec_tcp_udp);
3039 if (ib_spec->tcp_udp.size != kern_spec->tcp_udp.size)
3041 memcpy(&ib_spec->tcp_udp.val, &kern_spec->tcp_udp.val,
3042 sizeof(struct ib_flow_tcp_udp_filter));
3043 memcpy(&ib_spec->tcp_udp.mask, &kern_spec->tcp_udp.mask,
3044 sizeof(struct ib_flow_tcp_udp_filter));
3052 int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
3053 struct ib_device *ib_dev,
3054 struct ib_udata *ucore,
3055 struct ib_udata *uhw)
3057 struct ib_uverbs_create_flow cmd;
3058 struct ib_uverbs_create_flow_resp resp;
3059 struct ib_uobject *uobj;
3060 struct ib_flow *flow_id;
3061 struct ib_uverbs_flow_attr *kern_flow_attr;
3062 struct ib_flow_attr *flow_attr;
3069 if (ucore->inlen < sizeof(cmd))
3072 if (ucore->outlen < sizeof(resp))
3075 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3079 ucore->inbuf += sizeof(cmd);
3080 ucore->inlen -= sizeof(cmd);
3085 if ((cmd.flow_attr.type == IB_FLOW_ATTR_SNIFFER &&
3086 !capable(CAP_NET_ADMIN)) || !capable(CAP_NET_RAW))
3089 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
3092 if (cmd.flow_attr.size > ucore->inlen ||
3093 cmd.flow_attr.size >
3094 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
3097 if (cmd.flow_attr.reserved[0] ||
3098 cmd.flow_attr.reserved[1])
3101 if (cmd.flow_attr.num_of_specs) {
3102 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
3104 if (!kern_flow_attr)
3107 memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr));
3108 err = ib_copy_from_udata(kern_flow_attr + 1, ucore,
3109 cmd.flow_attr.size);
3113 kern_flow_attr = &cmd.flow_attr;
3116 uobj = kmalloc(sizeof(*uobj), GFP_KERNEL);
3121 init_uobj(uobj, 0, file->ucontext, &rule_lock_class);
3122 down_write(&uobj->mutex);
3124 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
3130 flow_attr = kmalloc(sizeof(*flow_attr) + cmd.flow_attr.size, GFP_KERNEL);
3136 flow_attr->type = kern_flow_attr->type;
3137 flow_attr->priority = kern_flow_attr->priority;
3138 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
3139 flow_attr->port = kern_flow_attr->port;
3140 flow_attr->flags = kern_flow_attr->flags;
3141 flow_attr->size = sizeof(*flow_attr);
3143 kern_spec = kern_flow_attr + 1;
3144 ib_spec = flow_attr + 1;
3145 for (i = 0; i < flow_attr->num_of_specs &&
3146 cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) &&
3147 cmd.flow_attr.size >=
3148 ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) {
3149 err = kern_spec_to_ib_spec(kern_spec, ib_spec);
3153 ((union ib_flow_spec *) ib_spec)->size;
3154 cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size;
3155 kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size;
3156 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
3158 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
3159 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
3160 i, cmd.flow_attr.size);
3164 flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER);
3165 if (IS_ERR(flow_id)) {
3166 err = PTR_ERR(flow_id);
3170 flow_id->uobject = uobj;
3171 uobj->object = flow_id;
3173 err = idr_add_uobj(&ib_uverbs_rule_idr, uobj);
3177 memset(&resp, 0, sizeof(resp));
3178 resp.flow_handle = uobj->id;
3180 err = ib_copy_to_udata(ucore,
3181 &resp, sizeof(resp));
3186 mutex_lock(&file->mutex);
3187 list_add_tail(&uobj->list, &file->ucontext->rule_list);
3188 mutex_unlock(&file->mutex);
3192 up_write(&uobj->mutex);
3194 if (cmd.flow_attr.num_of_specs)
3195 kfree(kern_flow_attr);
3198 idr_remove_uobj(&ib_uverbs_rule_idr, uobj);
3200 ib_destroy_flow(flow_id);
3206 put_uobj_write(uobj);
3208 if (cmd.flow_attr.num_of_specs)
3209 kfree(kern_flow_attr);
3213 int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file,
3214 struct ib_device *ib_dev,
3215 struct ib_udata *ucore,
3216 struct ib_udata *uhw)
3218 struct ib_uverbs_destroy_flow cmd;
3219 struct ib_flow *flow_id;
3220 struct ib_uobject *uobj;
3223 if (ucore->inlen < sizeof(cmd))
3226 ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3233 uobj = idr_write_uobj(&ib_uverbs_rule_idr, cmd.flow_handle,
3237 flow_id = uobj->object;
3239 ret = ib_destroy_flow(flow_id);
3243 put_uobj_write(uobj);
3245 idr_remove_uobj(&ib_uverbs_rule_idr, uobj);
3247 mutex_lock(&file->mutex);
3248 list_del(&uobj->list);
3249 mutex_unlock(&file->mutex);
3256 static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
3257 struct ib_device *ib_dev,
3258 struct ib_uverbs_create_xsrq *cmd,
3259 struct ib_udata *udata)
3261 struct ib_uverbs_create_srq_resp resp;
3262 struct ib_usrq_object *obj;
3265 struct ib_uobject *uninitialized_var(xrcd_uobj);
3266 struct ib_srq_init_attr attr;
3269 obj = kmalloc(sizeof *obj, GFP_KERNEL);
3273 init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_class);
3274 down_write(&obj->uevent.uobject.mutex);
3276 if (cmd->srq_type == IB_SRQT_XRC) {
3277 attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj);
3278 if (!attr.ext.xrc.xrcd) {
3283 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3284 atomic_inc(&obj->uxrcd->refcnt);
3286 attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0);
3287 if (!attr.ext.xrc.cq) {
3293 pd = idr_read_pd(cmd->pd_handle, file->ucontext);
3299 attr.event_handler = ib_uverbs_srq_event_handler;
3300 attr.srq_context = file;
3301 attr.srq_type = cmd->srq_type;
3302 attr.attr.max_wr = cmd->max_wr;
3303 attr.attr.max_sge = cmd->max_sge;
3304 attr.attr.srq_limit = cmd->srq_limit;
3306 obj->uevent.events_reported = 0;
3307 INIT_LIST_HEAD(&obj->uevent.event_list);
3309 srq = pd->device->create_srq(pd, &attr, udata);
3315 srq->device = pd->device;
3317 srq->srq_type = cmd->srq_type;
3318 srq->uobject = &obj->uevent.uobject;
3319 srq->event_handler = attr.event_handler;
3320 srq->srq_context = attr.srq_context;
3322 if (cmd->srq_type == IB_SRQT_XRC) {
3323 srq->ext.xrc.cq = attr.ext.xrc.cq;
3324 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
3325 atomic_inc(&attr.ext.xrc.cq->usecnt);
3326 atomic_inc(&attr.ext.xrc.xrcd->usecnt);
3329 atomic_inc(&pd->usecnt);
3330 atomic_set(&srq->usecnt, 0);
3332 obj->uevent.uobject.object = srq;
3333 ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject);
3337 memset(&resp, 0, sizeof resp);
3338 resp.srq_handle = obj->uevent.uobject.id;
3339 resp.max_wr = attr.attr.max_wr;
3340 resp.max_sge = attr.attr.max_sge;
3341 if (cmd->srq_type == IB_SRQT_XRC)
3342 resp.srqn = srq->ext.xrc.srq_num;
3344 if (copy_to_user((void __user *) (unsigned long) cmd->response,
3345 &resp, sizeof resp)) {
3350 if (cmd->srq_type == IB_SRQT_XRC) {
3351 put_uobj_read(xrcd_uobj);
3352 put_cq_read(attr.ext.xrc.cq);
3356 mutex_lock(&file->mutex);
3357 list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list);
3358 mutex_unlock(&file->mutex);
3360 obj->uevent.uobject.live = 1;
3362 up_write(&obj->uevent.uobject.mutex);
3367 idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject);
3370 ib_destroy_srq(srq);
3376 if (cmd->srq_type == IB_SRQT_XRC)
3377 put_cq_read(attr.ext.xrc.cq);
3380 if (cmd->srq_type == IB_SRQT_XRC) {
3381 atomic_dec(&obj->uxrcd->refcnt);
3382 put_uobj_read(xrcd_uobj);
3386 put_uobj_write(&obj->uevent.uobject);
3390 ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
3391 struct ib_device *ib_dev,
3392 const char __user *buf, int in_len,
3395 struct ib_uverbs_create_srq cmd;
3396 struct ib_uverbs_create_xsrq xcmd;
3397 struct ib_uverbs_create_srq_resp resp;
3398 struct ib_udata udata;
3401 if (out_len < sizeof resp)
3404 if (copy_from_user(&cmd, buf, sizeof cmd))
3407 xcmd.response = cmd.response;
3408 xcmd.user_handle = cmd.user_handle;
3409 xcmd.srq_type = IB_SRQT_BASIC;
3410 xcmd.pd_handle = cmd.pd_handle;
3411 xcmd.max_wr = cmd.max_wr;
3412 xcmd.max_sge = cmd.max_sge;
3413 xcmd.srq_limit = cmd.srq_limit;
3415 INIT_UDATA(&udata, buf + sizeof cmd,
3416 (unsigned long) cmd.response + sizeof resp,
3417 in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr),
3418 out_len - sizeof resp);
3420 ret = __uverbs_create_xsrq(file, ib_dev, &xcmd, &udata);
3427 ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file,
3428 struct ib_device *ib_dev,
3429 const char __user *buf, int in_len, int out_len)
3431 struct ib_uverbs_create_xsrq cmd;
3432 struct ib_uverbs_create_srq_resp resp;
3433 struct ib_udata udata;
3436 if (out_len < sizeof resp)
3439 if (copy_from_user(&cmd, buf, sizeof cmd))
3442 INIT_UDATA(&udata, buf + sizeof cmd,
3443 (unsigned long) cmd.response + sizeof resp,
3444 in_len - sizeof cmd - sizeof(struct ib_uverbs_cmd_hdr),
3445 out_len - sizeof resp);
3447 ret = __uverbs_create_xsrq(file, ib_dev, &cmd, &udata);
3454 ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
3455 struct ib_device *ib_dev,
3456 const char __user *buf, int in_len,
3459 struct ib_uverbs_modify_srq cmd;
3460 struct ib_udata udata;
3462 struct ib_srq_attr attr;
3465 if (copy_from_user(&cmd, buf, sizeof cmd))
3468 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
3471 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
3475 attr.max_wr = cmd.max_wr;
3476 attr.srq_limit = cmd.srq_limit;
3478 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata);
3482 return ret ? ret : in_len;
3485 ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
3486 struct ib_device *ib_dev,
3487 const char __user *buf,
3488 int in_len, int out_len)
3490 struct ib_uverbs_query_srq cmd;
3491 struct ib_uverbs_query_srq_resp resp;
3492 struct ib_srq_attr attr;
3496 if (out_len < sizeof resp)
3499 if (copy_from_user(&cmd, buf, sizeof cmd))
3502 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
3506 ret = ib_query_srq(srq, &attr);
3513 memset(&resp, 0, sizeof resp);
3515 resp.max_wr = attr.max_wr;
3516 resp.max_sge = attr.max_sge;
3517 resp.srq_limit = attr.srq_limit;
3519 if (copy_to_user((void __user *) (unsigned long) cmd.response,
3520 &resp, sizeof resp))
3526 ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
3527 struct ib_device *ib_dev,
3528 const char __user *buf, int in_len,
3531 struct ib_uverbs_destroy_srq cmd;
3532 struct ib_uverbs_destroy_srq_resp resp;
3533 struct ib_uobject *uobj;
3535 struct ib_uevent_object *obj;
3537 struct ib_usrq_object *us;
3538 enum ib_srq_type srq_type;
3540 if (copy_from_user(&cmd, buf, sizeof cmd))
3543 uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext);
3547 obj = container_of(uobj, struct ib_uevent_object, uobject);
3548 srq_type = srq->srq_type;
3550 ret = ib_destroy_srq(srq);
3554 put_uobj_write(uobj);
3559 if (srq_type == IB_SRQT_XRC) {
3560 us = container_of(obj, struct ib_usrq_object, uevent);
3561 atomic_dec(&us->uxrcd->refcnt);
3564 idr_remove_uobj(&ib_uverbs_srq_idr, uobj);
3566 mutex_lock(&file->mutex);
3567 list_del(&uobj->list);
3568 mutex_unlock(&file->mutex);
3570 ib_uverbs_release_uevent(file, obj);
3572 memset(&resp, 0, sizeof resp);
3573 resp.events_reported = obj->events_reported;
3577 if (copy_to_user((void __user *) (unsigned long) cmd.response,
3578 &resp, sizeof resp))
3581 return ret ? ret : in_len;
3584 int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
3585 struct ib_device *ib_dev,
3586 struct ib_udata *ucore,
3587 struct ib_udata *uhw)
3589 struct ib_uverbs_ex_query_device_resp resp;
3590 struct ib_uverbs_ex_query_device cmd;
3591 struct ib_device_attr attr;
3594 if (ucore->inlen < sizeof(cmd))
3597 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3607 resp.response_length = offsetof(typeof(resp), odp_caps);
3609 if (ucore->outlen < resp.response_length)
3612 memset(&attr, 0, sizeof(attr));
3614 err = ib_dev->query_device(ib_dev, &attr, uhw);
3618 copy_query_dev_fields(file, ib_dev, &resp.base, &attr);
3621 if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps))
3624 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
3625 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3626 resp.odp_caps.per_transport_caps.rc_odp_caps =
3627 attr.odp_caps.per_transport_caps.rc_odp_caps;
3628 resp.odp_caps.per_transport_caps.uc_odp_caps =
3629 attr.odp_caps.per_transport_caps.uc_odp_caps;
3630 resp.odp_caps.per_transport_caps.ud_odp_caps =
3631 attr.odp_caps.per_transport_caps.ud_odp_caps;
3632 resp.odp_caps.reserved = 0;
3634 memset(&resp.odp_caps, 0, sizeof(resp.odp_caps));
3636 resp.response_length += sizeof(resp.odp_caps);
3638 if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask))
3641 resp.timestamp_mask = attr.timestamp_mask;
3642 resp.response_length += sizeof(resp.timestamp_mask);
3644 if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock))
3647 resp.hca_core_clock = attr.hca_core_clock;
3648 resp.response_length += sizeof(resp.hca_core_clock);
3651 err = ib_copy_to_udata(ucore, &resp, resp.response_length);