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 operations. When an object is
66 * looked up, a reference must be taken on the object's kref before
69 * - Each object also has an rwsem. This rwsem must be held for
70 * reading while an operation that uses the object is performed.
71 * For example, while registering an MR, the associated PD's
72 * uobject.mutex must be held for reading. The rwsem must be held
73 * for writing while initializing or destroying an object.
75 * - In addition, each object has a "live" flag. If this flag is not
76 * set, then lookups of the object will fail even if it is found in
77 * the idr. This handles a reader that blocks and does not acquire
78 * the rwsem until after the object is destroyed. The destroy
79 * operation will set the live flag to 0 and then drop the rwsem;
80 * this will allow the reader to acquire the rwsem, see that the
81 * live flag is 0, and then drop the rwsem and its reference to
82 * object. The underlying storage will not be freed until the last
83 * reference to the object is dropped.
86 static void init_uobj(struct ib_uobject *uobj, u64 user_handle,
87 struct ib_ucontext *context, struct uverbs_lock_class *c)
89 uobj->user_handle = user_handle;
90 uobj->context = context;
91 kref_init(&uobj->ref);
92 init_rwsem(&uobj->mutex);
93 lockdep_set_class_and_name(&uobj->mutex, &c->key, c->name);
97 static void release_uobj(struct kref *kref)
99 kfree(container_of(kref, struct ib_uobject, ref));
102 static void put_uobj(struct ib_uobject *uobj)
104 kref_put(&uobj->ref, release_uobj);
107 static void put_uobj_read(struct ib_uobject *uobj)
109 up_read(&uobj->mutex);
113 static void put_uobj_write(struct ib_uobject *uobj)
115 up_write(&uobj->mutex);
119 static int idr_add_uobj(struct idr *idr, struct ib_uobject *uobj)
123 idr_preload(GFP_KERNEL);
124 spin_lock(&ib_uverbs_idr_lock);
126 ret = idr_alloc(idr, uobj, 0, 0, GFP_NOWAIT);
130 spin_unlock(&ib_uverbs_idr_lock);
133 return ret < 0 ? ret : 0;
136 void idr_remove_uobj(struct idr *idr, struct ib_uobject *uobj)
138 spin_lock(&ib_uverbs_idr_lock);
139 idr_remove(idr, uobj->id);
140 spin_unlock(&ib_uverbs_idr_lock);
143 static struct ib_uobject *__idr_get_uobj(struct idr *idr, int id,
144 struct ib_ucontext *context)
146 struct ib_uobject *uobj;
148 spin_lock(&ib_uverbs_idr_lock);
149 uobj = idr_find(idr, id);
151 if (uobj->context == context)
152 kref_get(&uobj->ref);
156 spin_unlock(&ib_uverbs_idr_lock);
161 static struct ib_uobject *idr_read_uobj(struct idr *idr, int id,
162 struct ib_ucontext *context, int nested)
164 struct ib_uobject *uobj;
166 uobj = __idr_get_uobj(idr, id, context);
171 down_read_nested(&uobj->mutex, SINGLE_DEPTH_NESTING);
173 down_read(&uobj->mutex);
182 static struct ib_uobject *idr_write_uobj(struct idr *idr, int id,
183 struct ib_ucontext *context)
185 struct ib_uobject *uobj;
187 uobj = __idr_get_uobj(idr, id, context);
191 down_write(&uobj->mutex);
193 put_uobj_write(uobj);
200 static void *idr_read_obj(struct idr *idr, int id, struct ib_ucontext *context,
203 struct ib_uobject *uobj;
205 uobj = idr_read_uobj(idr, id, context, nested);
206 return uobj ? uobj->object : NULL;
209 static struct ib_pd *idr_read_pd(int pd_handle, struct ib_ucontext *context)
211 return idr_read_obj(&ib_uverbs_pd_idr, pd_handle, context, 0);
214 static void put_pd_read(struct ib_pd *pd)
216 put_uobj_read(pd->uobject);
219 static struct ib_cq *idr_read_cq(int cq_handle, struct ib_ucontext *context, int nested)
221 return idr_read_obj(&ib_uverbs_cq_idr, cq_handle, context, nested);
224 static void put_cq_read(struct ib_cq *cq)
226 put_uobj_read(cq->uobject);
229 static struct ib_ah *idr_read_ah(int ah_handle, struct ib_ucontext *context)
231 return idr_read_obj(&ib_uverbs_ah_idr, ah_handle, context, 0);
234 static void put_ah_read(struct ib_ah *ah)
236 put_uobj_read(ah->uobject);
239 static struct ib_qp *idr_read_qp(int qp_handle, struct ib_ucontext *context)
241 return idr_read_obj(&ib_uverbs_qp_idr, qp_handle, context, 0);
244 static struct ib_qp *idr_write_qp(int qp_handle, struct ib_ucontext *context)
246 struct ib_uobject *uobj;
248 uobj = idr_write_uobj(&ib_uverbs_qp_idr, qp_handle, context);
249 return uobj ? uobj->object : NULL;
252 static void put_qp_read(struct ib_qp *qp)
254 put_uobj_read(qp->uobject);
257 static void put_qp_write(struct ib_qp *qp)
259 put_uobj_write(qp->uobject);
262 static struct ib_srq *idr_read_srq(int srq_handle, struct ib_ucontext *context)
264 return idr_read_obj(&ib_uverbs_srq_idr, srq_handle, context, 0);
267 static void put_srq_read(struct ib_srq *srq)
269 put_uobj_read(srq->uobject);
272 static struct ib_xrcd *idr_read_xrcd(int xrcd_handle, struct ib_ucontext *context,
273 struct ib_uobject **uobj)
275 *uobj = idr_read_uobj(&ib_uverbs_xrcd_idr, xrcd_handle, context, 0);
276 return *uobj ? (*uobj)->object : NULL;
279 static void put_xrcd_read(struct ib_uobject *uobj)
284 ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
285 const char __user *buf,
286 int in_len, int out_len)
288 struct ib_uverbs_get_context cmd;
289 struct ib_uverbs_get_context_resp resp;
290 struct ib_udata udata;
291 struct ib_device *ibdev = file->device->ib_dev;
292 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
293 struct ib_device_attr dev_attr;
295 struct ib_ucontext *ucontext;
299 if (out_len < sizeof resp)
302 if (copy_from_user(&cmd, buf, sizeof cmd))
305 mutex_lock(&file->mutex);
307 if (file->ucontext) {
312 INIT_UDATA(&udata, buf + sizeof cmd,
313 (unsigned long) cmd.response + sizeof resp,
314 in_len - sizeof cmd, out_len - sizeof resp);
316 ucontext = ibdev->alloc_ucontext(ibdev, &udata);
317 if (IS_ERR(ucontext)) {
318 ret = PTR_ERR(ucontext);
322 ucontext->device = ibdev;
323 INIT_LIST_HEAD(&ucontext->pd_list);
324 INIT_LIST_HEAD(&ucontext->mr_list);
325 INIT_LIST_HEAD(&ucontext->mw_list);
326 INIT_LIST_HEAD(&ucontext->cq_list);
327 INIT_LIST_HEAD(&ucontext->qp_list);
328 INIT_LIST_HEAD(&ucontext->srq_list);
329 INIT_LIST_HEAD(&ucontext->ah_list);
330 INIT_LIST_HEAD(&ucontext->xrcd_list);
331 INIT_LIST_HEAD(&ucontext->rule_list);
333 ucontext->tgid = get_task_pid(current->group_leader, PIDTYPE_PID);
335 ucontext->closing = 0;
337 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
338 ucontext->umem_tree = RB_ROOT;
339 init_rwsem(&ucontext->umem_rwsem);
340 ucontext->odp_mrs_count = 0;
341 INIT_LIST_HEAD(&ucontext->no_private_counters);
343 ret = ib_query_device(ibdev, &dev_attr);
346 if (!(dev_attr.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING))
347 ucontext->invalidate_range = NULL;
351 resp.num_comp_vectors = file->device->num_comp_vectors;
353 ret = get_unused_fd_flags(O_CLOEXEC);
358 filp = ib_uverbs_alloc_event_file(file, 1);
364 if (copy_to_user((void __user *) (unsigned long) cmd.response,
365 &resp, sizeof resp)) {
370 file->async_file = filp->private_data;
372 INIT_IB_EVENT_HANDLER(&file->event_handler, file->device->ib_dev,
373 ib_uverbs_event_handler);
374 ret = ib_register_event_handler(&file->event_handler);
378 kref_get(&file->async_file->ref);
379 kref_get(&file->ref);
380 file->ucontext = ucontext;
382 fd_install(resp.async_fd, filp);
384 mutex_unlock(&file->mutex);
392 put_unused_fd(resp.async_fd);
395 put_pid(ucontext->tgid);
396 ibdev->dealloc_ucontext(ucontext);
399 mutex_unlock(&file->mutex);
403 static void copy_query_dev_fields(struct ib_uverbs_file *file,
404 struct ib_uverbs_query_device_resp *resp,
405 struct ib_device_attr *attr)
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;
449 ssize_t ib_uverbs_query_device(struct ib_uverbs_file *file,
450 const char __user *buf,
451 int in_len, int out_len)
453 struct ib_uverbs_query_device cmd;
454 struct ib_uverbs_query_device_resp resp;
455 struct ib_device_attr attr;
458 if (out_len < sizeof resp)
461 if (copy_from_user(&cmd, buf, sizeof cmd))
464 ret = ib_query_device(file->device->ib_dev, &attr);
468 memset(&resp, 0, sizeof resp);
469 copy_query_dev_fields(file, &resp, &attr);
471 if (copy_to_user((void __user *) (unsigned long) cmd.response,
478 ssize_t ib_uverbs_query_port(struct ib_uverbs_file *file,
479 const char __user *buf,
480 int in_len, int out_len)
482 struct ib_uverbs_query_port cmd;
483 struct ib_uverbs_query_port_resp resp;
484 struct ib_port_attr attr;
487 if (out_len < sizeof resp)
490 if (copy_from_user(&cmd, buf, sizeof cmd))
493 ret = ib_query_port(file->device->ib_dev, cmd.port_num, &attr);
497 memset(&resp, 0, sizeof resp);
499 resp.state = attr.state;
500 resp.max_mtu = attr.max_mtu;
501 resp.active_mtu = attr.active_mtu;
502 resp.gid_tbl_len = attr.gid_tbl_len;
503 resp.port_cap_flags = attr.port_cap_flags;
504 resp.max_msg_sz = attr.max_msg_sz;
505 resp.bad_pkey_cntr = attr.bad_pkey_cntr;
506 resp.qkey_viol_cntr = attr.qkey_viol_cntr;
507 resp.pkey_tbl_len = attr.pkey_tbl_len;
509 resp.sm_lid = attr.sm_lid;
511 resp.max_vl_num = attr.max_vl_num;
512 resp.sm_sl = attr.sm_sl;
513 resp.subnet_timeout = attr.subnet_timeout;
514 resp.init_type_reply = attr.init_type_reply;
515 resp.active_width = attr.active_width;
516 resp.active_speed = attr.active_speed;
517 resp.phys_state = attr.phys_state;
518 resp.link_layer = rdma_port_get_link_layer(file->device->ib_dev,
521 if (copy_to_user((void __user *) (unsigned long) cmd.response,
528 ssize_t ib_uverbs_alloc_pd(struct ib_uverbs_file *file,
529 const char __user *buf,
530 int in_len, int out_len)
532 struct ib_uverbs_alloc_pd cmd;
533 struct ib_uverbs_alloc_pd_resp resp;
534 struct ib_udata udata;
535 struct ib_uobject *uobj;
539 if (out_len < sizeof resp)
542 if (copy_from_user(&cmd, buf, sizeof cmd))
545 INIT_UDATA(&udata, buf + sizeof cmd,
546 (unsigned long) cmd.response + sizeof resp,
547 in_len - sizeof cmd, out_len - sizeof resp);
549 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
553 init_uobj(uobj, 0, file->ucontext, &pd_lock_class);
554 down_write(&uobj->mutex);
556 pd = file->device->ib_dev->alloc_pd(file->device->ib_dev,
557 file->ucontext, &udata);
563 pd->device = file->device->ib_dev;
565 atomic_set(&pd->usecnt, 0);
568 ret = idr_add_uobj(&ib_uverbs_pd_idr, uobj);
572 memset(&resp, 0, sizeof resp);
573 resp.pd_handle = uobj->id;
575 if (copy_to_user((void __user *) (unsigned long) cmd.response,
576 &resp, sizeof resp)) {
581 mutex_lock(&file->mutex);
582 list_add_tail(&uobj->list, &file->ucontext->pd_list);
583 mutex_unlock(&file->mutex);
587 up_write(&uobj->mutex);
592 idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
598 put_uobj_write(uobj);
602 ssize_t ib_uverbs_dealloc_pd(struct ib_uverbs_file *file,
603 const char __user *buf,
604 int in_len, int out_len)
606 struct ib_uverbs_dealloc_pd cmd;
607 struct ib_uobject *uobj;
610 if (copy_from_user(&cmd, buf, sizeof cmd))
613 uobj = idr_write_uobj(&ib_uverbs_pd_idr, cmd.pd_handle, file->ucontext);
617 ret = ib_dealloc_pd(uobj->object);
621 put_uobj_write(uobj);
626 idr_remove_uobj(&ib_uverbs_pd_idr, uobj);
628 mutex_lock(&file->mutex);
629 list_del(&uobj->list);
630 mutex_unlock(&file->mutex);
637 struct xrcd_table_entry {
639 struct ib_xrcd *xrcd;
643 static int xrcd_table_insert(struct ib_uverbs_device *dev,
645 struct ib_xrcd *xrcd)
647 struct xrcd_table_entry *entry, *scan;
648 struct rb_node **p = &dev->xrcd_tree.rb_node;
649 struct rb_node *parent = NULL;
651 entry = kmalloc(sizeof *entry, GFP_KERNEL);
656 entry->inode = inode;
660 scan = rb_entry(parent, struct xrcd_table_entry, node);
662 if (inode < scan->inode) {
664 } else if (inode > scan->inode) {
672 rb_link_node(&entry->node, parent, p);
673 rb_insert_color(&entry->node, &dev->xrcd_tree);
678 static struct xrcd_table_entry *xrcd_table_search(struct ib_uverbs_device *dev,
681 struct xrcd_table_entry *entry;
682 struct rb_node *p = dev->xrcd_tree.rb_node;
685 entry = rb_entry(p, struct xrcd_table_entry, node);
687 if (inode < entry->inode)
689 else if (inode > entry->inode)
698 static struct ib_xrcd *find_xrcd(struct ib_uverbs_device *dev, struct inode *inode)
700 struct xrcd_table_entry *entry;
702 entry = xrcd_table_search(dev, inode);
709 static void xrcd_table_delete(struct ib_uverbs_device *dev,
712 struct xrcd_table_entry *entry;
714 entry = xrcd_table_search(dev, inode);
717 rb_erase(&entry->node, &dev->xrcd_tree);
722 ssize_t ib_uverbs_open_xrcd(struct ib_uverbs_file *file,
723 const char __user *buf, int in_len,
726 struct ib_uverbs_open_xrcd cmd;
727 struct ib_uverbs_open_xrcd_resp resp;
728 struct ib_udata udata;
729 struct ib_uxrcd_object *obj;
730 struct ib_xrcd *xrcd = NULL;
731 struct fd f = {NULL, 0};
732 struct inode *inode = NULL;
736 if (out_len < sizeof resp)
739 if (copy_from_user(&cmd, buf, sizeof cmd))
742 INIT_UDATA(&udata, buf + sizeof cmd,
743 (unsigned long) cmd.response + sizeof resp,
744 in_len - sizeof cmd, out_len - sizeof resp);
746 mutex_lock(&file->device->xrcd_tree_mutex);
749 /* search for file descriptor */
753 goto err_tree_mutex_unlock;
756 inode = file_inode(f.file);
757 xrcd = find_xrcd(file->device, inode);
758 if (!xrcd && !(cmd.oflags & O_CREAT)) {
759 /* no file descriptor. Need CREATE flag */
761 goto err_tree_mutex_unlock;
764 if (xrcd && cmd.oflags & O_EXCL) {
766 goto err_tree_mutex_unlock;
770 obj = kmalloc(sizeof *obj, GFP_KERNEL);
773 goto err_tree_mutex_unlock;
776 init_uobj(&obj->uobject, 0, file->ucontext, &xrcd_lock_class);
778 down_write(&obj->uobject.mutex);
781 xrcd = file->device->ib_dev->alloc_xrcd(file->device->ib_dev,
782 file->ucontext, &udata);
789 xrcd->device = file->device->ib_dev;
790 atomic_set(&xrcd->usecnt, 0);
791 mutex_init(&xrcd->tgt_qp_mutex);
792 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
796 atomic_set(&obj->refcnt, 0);
797 obj->uobject.object = xrcd;
798 ret = idr_add_uobj(&ib_uverbs_xrcd_idr, &obj->uobject);
802 memset(&resp, 0, sizeof resp);
803 resp.xrcd_handle = obj->uobject.id;
807 /* create new inode/xrcd table entry */
808 ret = xrcd_table_insert(file->device, inode, xrcd);
810 goto err_insert_xrcd;
812 atomic_inc(&xrcd->usecnt);
815 if (copy_to_user((void __user *) (unsigned long) cmd.response,
816 &resp, sizeof resp)) {
824 mutex_lock(&file->mutex);
825 list_add_tail(&obj->uobject.list, &file->ucontext->xrcd_list);
826 mutex_unlock(&file->mutex);
828 obj->uobject.live = 1;
829 up_write(&obj->uobject.mutex);
831 mutex_unlock(&file->device->xrcd_tree_mutex);
837 xrcd_table_delete(file->device, inode);
838 atomic_dec(&xrcd->usecnt);
842 idr_remove_uobj(&ib_uverbs_xrcd_idr, &obj->uobject);
845 ib_dealloc_xrcd(xrcd);
848 put_uobj_write(&obj->uobject);
850 err_tree_mutex_unlock:
854 mutex_unlock(&file->device->xrcd_tree_mutex);
859 ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file,
860 const char __user *buf, int in_len,
863 struct ib_uverbs_close_xrcd cmd;
864 struct ib_uobject *uobj;
865 struct ib_xrcd *xrcd = NULL;
866 struct inode *inode = NULL;
867 struct ib_uxrcd_object *obj;
871 if (copy_from_user(&cmd, buf, sizeof cmd))
874 mutex_lock(&file->device->xrcd_tree_mutex);
875 uobj = idr_write_uobj(&ib_uverbs_xrcd_idr, cmd.xrcd_handle, file->ucontext);
883 obj = container_of(uobj, struct ib_uxrcd_object, uobject);
884 if (atomic_read(&obj->refcnt)) {
885 put_uobj_write(uobj);
890 if (!inode || atomic_dec_and_test(&xrcd->usecnt)) {
891 ret = ib_dealloc_xrcd(uobj->object);
898 atomic_inc(&xrcd->usecnt);
900 put_uobj_write(uobj);
906 xrcd_table_delete(file->device, inode);
908 idr_remove_uobj(&ib_uverbs_xrcd_idr, uobj);
909 mutex_lock(&file->mutex);
910 list_del(&uobj->list);
911 mutex_unlock(&file->mutex);
917 mutex_unlock(&file->device->xrcd_tree_mutex);
921 void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev,
922 struct ib_xrcd *xrcd)
927 if (inode && !atomic_dec_and_test(&xrcd->usecnt))
930 ib_dealloc_xrcd(xrcd);
933 xrcd_table_delete(dev, inode);
936 ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
937 const char __user *buf, int in_len,
940 struct ib_uverbs_reg_mr cmd;
941 struct ib_uverbs_reg_mr_resp resp;
942 struct ib_udata udata;
943 struct ib_uobject *uobj;
948 if (out_len < sizeof resp)
951 if (copy_from_user(&cmd, buf, sizeof cmd))
954 INIT_UDATA(&udata, buf + sizeof cmd,
955 (unsigned long) cmd.response + sizeof resp,
956 in_len - sizeof cmd, out_len - sizeof resp);
958 if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))
961 ret = ib_check_mr_access(cmd.access_flags);
965 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
969 init_uobj(uobj, 0, file->ucontext, &mr_lock_class);
970 down_write(&uobj->mutex);
972 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
978 if (cmd.access_flags & IB_ACCESS_ON_DEMAND) {
979 struct ib_device_attr attr;
981 ret = ib_query_device(pd->device, &attr);
982 if (ret || !(attr.device_cap_flags &
983 IB_DEVICE_ON_DEMAND_PAGING)) {
984 pr_debug("ODP support not available\n");
990 mr = pd->device->reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va,
991 cmd.access_flags, &udata);
997 mr->device = pd->device;
1000 atomic_inc(&pd->usecnt);
1001 atomic_set(&mr->usecnt, 0);
1004 ret = idr_add_uobj(&ib_uverbs_mr_idr, uobj);
1008 memset(&resp, 0, sizeof resp);
1009 resp.lkey = mr->lkey;
1010 resp.rkey = mr->rkey;
1011 resp.mr_handle = uobj->id;
1013 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1014 &resp, sizeof resp)) {
1021 mutex_lock(&file->mutex);
1022 list_add_tail(&uobj->list, &file->ucontext->mr_list);
1023 mutex_unlock(&file->mutex);
1027 up_write(&uobj->mutex);
1032 idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
1041 put_uobj_write(uobj);
1045 ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file,
1046 const char __user *buf, int in_len,
1049 struct ib_uverbs_rereg_mr cmd;
1050 struct ib_uverbs_rereg_mr_resp resp;
1051 struct ib_udata udata;
1052 struct ib_pd *pd = NULL;
1054 struct ib_pd *old_pd;
1056 struct ib_uobject *uobj;
1058 if (out_len < sizeof(resp))
1061 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1064 INIT_UDATA(&udata, buf + sizeof(cmd),
1065 (unsigned long) cmd.response + sizeof(resp),
1066 in_len - sizeof(cmd), out_len - sizeof(resp));
1068 if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags)
1071 if ((cmd.flags & IB_MR_REREG_TRANS) &&
1072 (!cmd.start || !cmd.hca_va || 0 >= cmd.length ||
1073 (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)))
1076 uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle,
1084 if (cmd.flags & IB_MR_REREG_ACCESS) {
1085 ret = ib_check_mr_access(cmd.access_flags);
1090 if (cmd.flags & IB_MR_REREG_PD) {
1091 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
1098 if (atomic_read(&mr->usecnt)) {
1104 ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start,
1105 cmd.length, cmd.hca_va,
1106 cmd.access_flags, pd, &udata);
1108 if (cmd.flags & IB_MR_REREG_PD) {
1109 atomic_inc(&pd->usecnt);
1111 atomic_dec(&old_pd->usecnt);
1117 memset(&resp, 0, sizeof(resp));
1118 resp.lkey = mr->lkey;
1119 resp.rkey = mr->rkey;
1121 if (copy_to_user((void __user *)(unsigned long)cmd.response,
1122 &resp, sizeof(resp)))
1128 if (cmd.flags & IB_MR_REREG_PD)
1133 put_uobj_write(mr->uobject);
1138 ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file,
1139 const char __user *buf, int in_len,
1142 struct ib_uverbs_dereg_mr cmd;
1144 struct ib_uobject *uobj;
1147 if (copy_from_user(&cmd, buf, sizeof cmd))
1150 uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, file->ucontext);
1156 ret = ib_dereg_mr(mr);
1160 put_uobj_write(uobj);
1165 idr_remove_uobj(&ib_uverbs_mr_idr, uobj);
1167 mutex_lock(&file->mutex);
1168 list_del(&uobj->list);
1169 mutex_unlock(&file->mutex);
1176 ssize_t ib_uverbs_alloc_mw(struct ib_uverbs_file *file,
1177 const char __user *buf, int in_len,
1180 struct ib_uverbs_alloc_mw cmd;
1181 struct ib_uverbs_alloc_mw_resp resp;
1182 struct ib_uobject *uobj;
1187 if (out_len < sizeof(resp))
1190 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1193 uobj = kmalloc(sizeof(*uobj), GFP_KERNEL);
1197 init_uobj(uobj, 0, file->ucontext, &mw_lock_class);
1198 down_write(&uobj->mutex);
1200 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
1206 mw = pd->device->alloc_mw(pd, cmd.mw_type);
1212 mw->device = pd->device;
1215 atomic_inc(&pd->usecnt);
1218 ret = idr_add_uobj(&ib_uverbs_mw_idr, uobj);
1222 memset(&resp, 0, sizeof(resp));
1223 resp.rkey = mw->rkey;
1224 resp.mw_handle = uobj->id;
1226 if (copy_to_user((void __user *)(unsigned long)cmd.response,
1227 &resp, sizeof(resp))) {
1234 mutex_lock(&file->mutex);
1235 list_add_tail(&uobj->list, &file->ucontext->mw_list);
1236 mutex_unlock(&file->mutex);
1240 up_write(&uobj->mutex);
1245 idr_remove_uobj(&ib_uverbs_mw_idr, uobj);
1254 put_uobj_write(uobj);
1258 ssize_t ib_uverbs_dealloc_mw(struct ib_uverbs_file *file,
1259 const char __user *buf, int in_len,
1262 struct ib_uverbs_dealloc_mw cmd;
1264 struct ib_uobject *uobj;
1267 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1270 uobj = idr_write_uobj(&ib_uverbs_mw_idr, cmd.mw_handle, file->ucontext);
1276 ret = ib_dealloc_mw(mw);
1280 put_uobj_write(uobj);
1285 idr_remove_uobj(&ib_uverbs_mw_idr, uobj);
1287 mutex_lock(&file->mutex);
1288 list_del(&uobj->list);
1289 mutex_unlock(&file->mutex);
1296 ssize_t ib_uverbs_create_comp_channel(struct ib_uverbs_file *file,
1297 const char __user *buf, int in_len,
1300 struct ib_uverbs_create_comp_channel cmd;
1301 struct ib_uverbs_create_comp_channel_resp resp;
1305 if (out_len < sizeof resp)
1308 if (copy_from_user(&cmd, buf, sizeof cmd))
1311 ret = get_unused_fd_flags(O_CLOEXEC);
1316 filp = ib_uverbs_alloc_event_file(file, 0);
1318 put_unused_fd(resp.fd);
1319 return PTR_ERR(filp);
1322 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1323 &resp, sizeof resp)) {
1324 put_unused_fd(resp.fd);
1329 fd_install(resp.fd, filp);
1333 static struct ib_ucq_object *create_cq(struct ib_uverbs_file *file,
1334 struct ib_udata *ucore,
1335 struct ib_udata *uhw,
1336 struct ib_uverbs_ex_create_cq *cmd,
1338 int (*cb)(struct ib_uverbs_file *file,
1339 struct ib_ucq_object *obj,
1340 struct ib_uverbs_ex_create_cq_resp *resp,
1341 struct ib_udata *udata,
1345 struct ib_ucq_object *obj;
1346 struct ib_uverbs_event_file *ev_file = NULL;
1349 struct ib_uverbs_ex_create_cq_resp resp;
1350 struct ib_cq_init_attr attr = {};
1352 if (cmd->comp_vector >= file->device->num_comp_vectors)
1353 return ERR_PTR(-EINVAL);
1355 obj = kmalloc(sizeof *obj, GFP_KERNEL);
1357 return ERR_PTR(-ENOMEM);
1359 init_uobj(&obj->uobject, cmd->user_handle, file->ucontext, &cq_lock_class);
1360 down_write(&obj->uobject.mutex);
1362 if (cmd->comp_channel >= 0) {
1363 ev_file = ib_uverbs_lookup_comp_file(cmd->comp_channel);
1370 obj->uverbs_file = file;
1371 obj->comp_events_reported = 0;
1372 obj->async_events_reported = 0;
1373 INIT_LIST_HEAD(&obj->comp_list);
1374 INIT_LIST_HEAD(&obj->async_list);
1376 attr.cqe = cmd->cqe;
1377 attr.comp_vector = cmd->comp_vector;
1379 if (cmd_sz > offsetof(typeof(*cmd), flags) + sizeof(cmd->flags))
1380 attr.flags = cmd->flags;
1382 cq = file->device->ib_dev->create_cq(file->device->ib_dev, &attr,
1383 file->ucontext, uhw);
1389 cq->device = file->device->ib_dev;
1390 cq->uobject = &obj->uobject;
1391 cq->comp_handler = ib_uverbs_comp_handler;
1392 cq->event_handler = ib_uverbs_cq_event_handler;
1393 cq->cq_context = ev_file;
1394 atomic_set(&cq->usecnt, 0);
1396 obj->uobject.object = cq;
1397 ret = idr_add_uobj(&ib_uverbs_cq_idr, &obj->uobject);
1401 memset(&resp, 0, sizeof resp);
1402 resp.base.cq_handle = obj->uobject.id;
1403 resp.base.cqe = cq->cqe;
1405 resp.response_length = offsetof(typeof(resp), response_length) +
1406 sizeof(resp.response_length);
1408 ret = cb(file, obj, &resp, ucore, context);
1412 mutex_lock(&file->mutex);
1413 list_add_tail(&obj->uobject.list, &file->ucontext->cq_list);
1414 mutex_unlock(&file->mutex);
1416 obj->uobject.live = 1;
1418 up_write(&obj->uobject.mutex);
1423 idr_remove_uobj(&ib_uverbs_cq_idr, &obj->uobject);
1430 ib_uverbs_release_ucq(file, ev_file, obj);
1433 put_uobj_write(&obj->uobject);
1435 return ERR_PTR(ret);
1438 static int ib_uverbs_create_cq_cb(struct ib_uverbs_file *file,
1439 struct ib_ucq_object *obj,
1440 struct ib_uverbs_ex_create_cq_resp *resp,
1441 struct ib_udata *ucore, void *context)
1443 if (ib_copy_to_udata(ucore, &resp->base, sizeof(resp->base)))
1449 ssize_t ib_uverbs_create_cq(struct ib_uverbs_file *file,
1450 const char __user *buf, int in_len,
1453 struct ib_uverbs_create_cq cmd;
1454 struct ib_uverbs_ex_create_cq cmd_ex;
1455 struct ib_uverbs_create_cq_resp resp;
1456 struct ib_udata ucore;
1457 struct ib_udata uhw;
1458 struct ib_ucq_object *obj;
1460 if (out_len < sizeof(resp))
1463 if (copy_from_user(&cmd, buf, sizeof(cmd)))
1466 INIT_UDATA(&ucore, buf, cmd.response, sizeof(cmd), sizeof(resp));
1468 INIT_UDATA(&uhw, buf + sizeof(cmd),
1469 (unsigned long)cmd.response + sizeof(resp),
1470 in_len - sizeof(cmd), out_len - sizeof(resp));
1472 memset(&cmd_ex, 0, sizeof(cmd_ex));
1473 cmd_ex.user_handle = cmd.user_handle;
1474 cmd_ex.cqe = cmd.cqe;
1475 cmd_ex.comp_vector = cmd.comp_vector;
1476 cmd_ex.comp_channel = cmd.comp_channel;
1478 obj = create_cq(file, &ucore, &uhw, &cmd_ex,
1479 offsetof(typeof(cmd_ex), comp_channel) +
1480 sizeof(cmd.comp_channel), ib_uverbs_create_cq_cb,
1484 return PTR_ERR(obj);
1489 static int ib_uverbs_ex_create_cq_cb(struct ib_uverbs_file *file,
1490 struct ib_ucq_object *obj,
1491 struct ib_uverbs_ex_create_cq_resp *resp,
1492 struct ib_udata *ucore, void *context)
1494 if (ib_copy_to_udata(ucore, resp, resp->response_length))
1500 int ib_uverbs_ex_create_cq(struct ib_uverbs_file *file,
1501 struct ib_udata *ucore,
1502 struct ib_udata *uhw)
1504 struct ib_uverbs_ex_create_cq_resp resp;
1505 struct ib_uverbs_ex_create_cq cmd;
1506 struct ib_ucq_object *obj;
1509 if (ucore->inlen < sizeof(cmd))
1512 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
1522 if (ucore->outlen < (offsetof(typeof(resp), response_length) +
1523 sizeof(resp.response_length)))
1526 obj = create_cq(file, ucore, uhw, &cmd,
1527 min(ucore->inlen, sizeof(cmd)),
1528 ib_uverbs_ex_create_cq_cb, NULL);
1531 return PTR_ERR(obj);
1536 ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
1537 const char __user *buf, int in_len,
1540 struct ib_uverbs_resize_cq cmd;
1541 struct ib_uverbs_resize_cq_resp resp;
1542 struct ib_udata udata;
1546 if (copy_from_user(&cmd, buf, sizeof cmd))
1549 INIT_UDATA(&udata, buf + sizeof cmd,
1550 (unsigned long) cmd.response + sizeof resp,
1551 in_len - sizeof cmd, out_len - sizeof resp);
1553 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
1557 ret = cq->device->resize_cq(cq, cmd.cqe, &udata);
1563 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1564 &resp, sizeof resp.cqe))
1570 return ret ? ret : in_len;
1573 static int copy_wc_to_user(void __user *dest, struct ib_wc *wc)
1575 struct ib_uverbs_wc tmp;
1577 tmp.wr_id = wc->wr_id;
1578 tmp.status = wc->status;
1579 tmp.opcode = wc->opcode;
1580 tmp.vendor_err = wc->vendor_err;
1581 tmp.byte_len = wc->byte_len;
1582 tmp.ex.imm_data = (__u32 __force) wc->ex.imm_data;
1583 tmp.qp_num = wc->qp->qp_num;
1584 tmp.src_qp = wc->src_qp;
1585 tmp.wc_flags = wc->wc_flags;
1586 tmp.pkey_index = wc->pkey_index;
1587 tmp.slid = wc->slid;
1589 tmp.dlid_path_bits = wc->dlid_path_bits;
1590 tmp.port_num = wc->port_num;
1593 if (copy_to_user(dest, &tmp, sizeof tmp))
1599 ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
1600 const char __user *buf, int in_len,
1603 struct ib_uverbs_poll_cq cmd;
1604 struct ib_uverbs_poll_cq_resp resp;
1605 u8 __user *header_ptr;
1606 u8 __user *data_ptr;
1611 if (copy_from_user(&cmd, buf, sizeof cmd))
1614 cq = idr_read_cq(cmd.cq_handle, file->ucontext, 0);
1618 /* we copy a struct ib_uverbs_poll_cq_resp to user space */
1619 header_ptr = (void __user *)(unsigned long) cmd.response;
1620 data_ptr = header_ptr + sizeof resp;
1622 memset(&resp, 0, sizeof resp);
1623 while (resp.count < cmd.ne) {
1624 ret = ib_poll_cq(cq, 1, &wc);
1630 ret = copy_wc_to_user(data_ptr, &wc);
1634 data_ptr += sizeof(struct ib_uverbs_wc);
1638 if (copy_to_user(header_ptr, &resp, sizeof resp)) {
1650 ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
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 const char __user *buf, int in_len,
1676 struct ib_uverbs_destroy_cq cmd;
1677 struct ib_uverbs_destroy_cq_resp resp;
1678 struct ib_uobject *uobj;
1680 struct ib_ucq_object *obj;
1681 struct ib_uverbs_event_file *ev_file;
1684 if (copy_from_user(&cmd, buf, sizeof cmd))
1687 uobj = idr_write_uobj(&ib_uverbs_cq_idr, cmd.cq_handle, file->ucontext);
1691 ev_file = cq->cq_context;
1692 obj = container_of(cq->uobject, struct ib_ucq_object, uobject);
1694 ret = ib_destroy_cq(cq);
1698 put_uobj_write(uobj);
1703 idr_remove_uobj(&ib_uverbs_cq_idr, uobj);
1705 mutex_lock(&file->mutex);
1706 list_del(&uobj->list);
1707 mutex_unlock(&file->mutex);
1709 ib_uverbs_release_ucq(file, ev_file, obj);
1711 memset(&resp, 0, sizeof resp);
1712 resp.comp_events_reported = obj->comp_events_reported;
1713 resp.async_events_reported = obj->async_events_reported;
1717 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1718 &resp, sizeof resp))
1724 ssize_t ib_uverbs_create_qp(struct ib_uverbs_file *file,
1725 const char __user *buf, int in_len,
1728 struct ib_uverbs_create_qp cmd;
1729 struct ib_uverbs_create_qp_resp resp;
1730 struct ib_udata udata;
1731 struct ib_uqp_object *obj;
1732 struct ib_device *device;
1733 struct ib_pd *pd = NULL;
1734 struct ib_xrcd *xrcd = NULL;
1735 struct ib_uobject *uninitialized_var(xrcd_uobj);
1736 struct ib_cq *scq = NULL, *rcq = NULL;
1737 struct ib_srq *srq = NULL;
1739 struct ib_qp_init_attr attr;
1742 if (out_len < sizeof resp)
1745 if (copy_from_user(&cmd, buf, sizeof cmd))
1748 if (cmd.qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
1751 INIT_UDATA(&udata, buf + sizeof cmd,
1752 (unsigned long) cmd.response + sizeof resp,
1753 in_len - sizeof cmd, out_len - sizeof resp);
1755 obj = kzalloc(sizeof *obj, GFP_KERNEL);
1759 init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class);
1760 down_write(&obj->uevent.uobject.mutex);
1762 if (cmd.qp_type == IB_QPT_XRC_TGT) {
1763 xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj);
1768 device = xrcd->device;
1770 if (cmd.qp_type == IB_QPT_XRC_INI) {
1771 cmd.max_recv_wr = cmd.max_recv_sge = 0;
1774 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
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, file->ucontext, 0);
1790 scq = idr_read_cq(cmd.send_cq_handle, file->ucontext, !!rcq);
1792 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
1798 device = pd->device;
1801 attr.event_handler = ib_uverbs_qp_event_handler;
1802 attr.qp_context = file;
1807 attr.sq_sig_type = cmd.sq_sig_all ? IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
1808 attr.qp_type = cmd.qp_type;
1809 attr.create_flags = 0;
1811 attr.cap.max_send_wr = cmd.max_send_wr;
1812 attr.cap.max_recv_wr = cmd.max_recv_wr;
1813 attr.cap.max_send_sge = cmd.max_send_sge;
1814 attr.cap.max_recv_sge = cmd.max_recv_sge;
1815 attr.cap.max_inline_data = cmd.max_inline_data;
1817 obj->uevent.events_reported = 0;
1818 INIT_LIST_HEAD(&obj->uevent.event_list);
1819 INIT_LIST_HEAD(&obj->mcast_list);
1821 if (cmd.qp_type == IB_QPT_XRC_TGT)
1822 qp = ib_create_qp(pd, &attr);
1824 qp = device->create_qp(pd, &attr, &udata);
1831 if (cmd.qp_type != IB_QPT_XRC_TGT) {
1833 qp->device = device;
1835 qp->send_cq = attr.send_cq;
1836 qp->recv_cq = attr.recv_cq;
1838 qp->event_handler = attr.event_handler;
1839 qp->qp_context = attr.qp_context;
1840 qp->qp_type = attr.qp_type;
1841 atomic_set(&qp->usecnt, 0);
1842 atomic_inc(&pd->usecnt);
1843 atomic_inc(&attr.send_cq->usecnt);
1845 atomic_inc(&attr.recv_cq->usecnt);
1847 atomic_inc(&attr.srq->usecnt);
1849 qp->uobject = &obj->uevent.uobject;
1851 obj->uevent.uobject.object = qp;
1852 ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
1856 memset(&resp, 0, sizeof resp);
1857 resp.qpn = qp->qp_num;
1858 resp.qp_handle = obj->uevent.uobject.id;
1859 resp.max_recv_sge = attr.cap.max_recv_sge;
1860 resp.max_send_sge = attr.cap.max_send_sge;
1861 resp.max_recv_wr = attr.cap.max_recv_wr;
1862 resp.max_send_wr = attr.cap.max_send_wr;
1863 resp.max_inline_data = attr.cap.max_inline_data;
1865 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1866 &resp, sizeof resp)) {
1872 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object,
1874 atomic_inc(&obj->uxrcd->refcnt);
1875 put_xrcd_read(xrcd_uobj);
1882 if (rcq && rcq != scq)
1887 mutex_lock(&file->mutex);
1888 list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list);
1889 mutex_unlock(&file->mutex);
1891 obj->uevent.uobject.live = 1;
1893 up_write(&obj->uevent.uobject.mutex);
1898 idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
1905 put_xrcd_read(xrcd_uobj);
1910 if (rcq && rcq != scq)
1915 put_uobj_write(&obj->uevent.uobject);
1919 ssize_t ib_uverbs_open_qp(struct ib_uverbs_file *file,
1920 const char __user *buf, int in_len, int out_len)
1922 struct ib_uverbs_open_qp cmd;
1923 struct ib_uverbs_create_qp_resp resp;
1924 struct ib_udata udata;
1925 struct ib_uqp_object *obj;
1926 struct ib_xrcd *xrcd;
1927 struct ib_uobject *uninitialized_var(xrcd_uobj);
1929 struct ib_qp_open_attr attr;
1932 if (out_len < sizeof resp)
1935 if (copy_from_user(&cmd, buf, sizeof cmd))
1938 INIT_UDATA(&udata, buf + sizeof cmd,
1939 (unsigned long) cmd.response + sizeof resp,
1940 in_len - sizeof cmd, out_len - sizeof resp);
1942 obj = kmalloc(sizeof *obj, GFP_KERNEL);
1946 init_uobj(&obj->uevent.uobject, cmd.user_handle, file->ucontext, &qp_lock_class);
1947 down_write(&obj->uevent.uobject.mutex);
1949 xrcd = idr_read_xrcd(cmd.pd_handle, file->ucontext, &xrcd_uobj);
1955 attr.event_handler = ib_uverbs_qp_event_handler;
1956 attr.qp_context = file;
1957 attr.qp_num = cmd.qpn;
1958 attr.qp_type = cmd.qp_type;
1960 obj->uevent.events_reported = 0;
1961 INIT_LIST_HEAD(&obj->uevent.event_list);
1962 INIT_LIST_HEAD(&obj->mcast_list);
1964 qp = ib_open_qp(xrcd, &attr);
1970 qp->uobject = &obj->uevent.uobject;
1972 obj->uevent.uobject.object = qp;
1973 ret = idr_add_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
1977 memset(&resp, 0, sizeof resp);
1978 resp.qpn = qp->qp_num;
1979 resp.qp_handle = obj->uevent.uobject.id;
1981 if (copy_to_user((void __user *) (unsigned long) cmd.response,
1982 &resp, sizeof resp)) {
1987 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
1988 atomic_inc(&obj->uxrcd->refcnt);
1989 put_xrcd_read(xrcd_uobj);
1991 mutex_lock(&file->mutex);
1992 list_add_tail(&obj->uevent.uobject.list, &file->ucontext->qp_list);
1993 mutex_unlock(&file->mutex);
1995 obj->uevent.uobject.live = 1;
1997 up_write(&obj->uevent.uobject.mutex);
2002 idr_remove_uobj(&ib_uverbs_qp_idr, &obj->uevent.uobject);
2008 put_xrcd_read(xrcd_uobj);
2009 put_uobj_write(&obj->uevent.uobject);
2013 ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
2014 const char __user *buf, int in_len,
2017 struct ib_uverbs_query_qp cmd;
2018 struct ib_uverbs_query_qp_resp resp;
2020 struct ib_qp_attr *attr;
2021 struct ib_qp_init_attr *init_attr;
2024 if (copy_from_user(&cmd, buf, sizeof cmd))
2027 attr = kmalloc(sizeof *attr, GFP_KERNEL);
2028 init_attr = kmalloc(sizeof *init_attr, GFP_KERNEL);
2029 if (!attr || !init_attr) {
2034 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
2040 ret = ib_query_qp(qp, attr, cmd.attr_mask, init_attr);
2047 memset(&resp, 0, sizeof resp);
2049 resp.qp_state = attr->qp_state;
2050 resp.cur_qp_state = attr->cur_qp_state;
2051 resp.path_mtu = attr->path_mtu;
2052 resp.path_mig_state = attr->path_mig_state;
2053 resp.qkey = attr->qkey;
2054 resp.rq_psn = attr->rq_psn;
2055 resp.sq_psn = attr->sq_psn;
2056 resp.dest_qp_num = attr->dest_qp_num;
2057 resp.qp_access_flags = attr->qp_access_flags;
2058 resp.pkey_index = attr->pkey_index;
2059 resp.alt_pkey_index = attr->alt_pkey_index;
2060 resp.sq_draining = attr->sq_draining;
2061 resp.max_rd_atomic = attr->max_rd_atomic;
2062 resp.max_dest_rd_atomic = attr->max_dest_rd_atomic;
2063 resp.min_rnr_timer = attr->min_rnr_timer;
2064 resp.port_num = attr->port_num;
2065 resp.timeout = attr->timeout;
2066 resp.retry_cnt = attr->retry_cnt;
2067 resp.rnr_retry = attr->rnr_retry;
2068 resp.alt_port_num = attr->alt_port_num;
2069 resp.alt_timeout = attr->alt_timeout;
2071 memcpy(resp.dest.dgid, attr->ah_attr.grh.dgid.raw, 16);
2072 resp.dest.flow_label = attr->ah_attr.grh.flow_label;
2073 resp.dest.sgid_index = attr->ah_attr.grh.sgid_index;
2074 resp.dest.hop_limit = attr->ah_attr.grh.hop_limit;
2075 resp.dest.traffic_class = attr->ah_attr.grh.traffic_class;
2076 resp.dest.dlid = attr->ah_attr.dlid;
2077 resp.dest.sl = attr->ah_attr.sl;
2078 resp.dest.src_path_bits = attr->ah_attr.src_path_bits;
2079 resp.dest.static_rate = attr->ah_attr.static_rate;
2080 resp.dest.is_global = !!(attr->ah_attr.ah_flags & IB_AH_GRH);
2081 resp.dest.port_num = attr->ah_attr.port_num;
2083 memcpy(resp.alt_dest.dgid, attr->alt_ah_attr.grh.dgid.raw, 16);
2084 resp.alt_dest.flow_label = attr->alt_ah_attr.grh.flow_label;
2085 resp.alt_dest.sgid_index = attr->alt_ah_attr.grh.sgid_index;
2086 resp.alt_dest.hop_limit = attr->alt_ah_attr.grh.hop_limit;
2087 resp.alt_dest.traffic_class = attr->alt_ah_attr.grh.traffic_class;
2088 resp.alt_dest.dlid = attr->alt_ah_attr.dlid;
2089 resp.alt_dest.sl = attr->alt_ah_attr.sl;
2090 resp.alt_dest.src_path_bits = attr->alt_ah_attr.src_path_bits;
2091 resp.alt_dest.static_rate = attr->alt_ah_attr.static_rate;
2092 resp.alt_dest.is_global = !!(attr->alt_ah_attr.ah_flags & IB_AH_GRH);
2093 resp.alt_dest.port_num = attr->alt_ah_attr.port_num;
2095 resp.max_send_wr = init_attr->cap.max_send_wr;
2096 resp.max_recv_wr = init_attr->cap.max_recv_wr;
2097 resp.max_send_sge = init_attr->cap.max_send_sge;
2098 resp.max_recv_sge = init_attr->cap.max_recv_sge;
2099 resp.max_inline_data = init_attr->cap.max_inline_data;
2100 resp.sq_sig_all = init_attr->sq_sig_type == IB_SIGNAL_ALL_WR;
2102 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2103 &resp, sizeof resp))
2110 return ret ? ret : in_len;
2113 /* Remove ignored fields set in the attribute mask */
2114 static int modify_qp_mask(enum ib_qp_type qp_type, int mask)
2117 case IB_QPT_XRC_INI:
2118 return mask & ~(IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER);
2119 case IB_QPT_XRC_TGT:
2120 return mask & ~(IB_QP_MAX_QP_RD_ATOMIC | IB_QP_RETRY_CNT |
2127 ssize_t ib_uverbs_modify_qp(struct ib_uverbs_file *file,
2128 const char __user *buf, int in_len,
2131 struct ib_uverbs_modify_qp cmd;
2132 struct ib_udata udata;
2134 struct ib_qp_attr *attr;
2137 if (copy_from_user(&cmd, buf, sizeof cmd))
2140 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
2143 attr = kmalloc(sizeof *attr, GFP_KERNEL);
2147 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
2153 attr->qp_state = cmd.qp_state;
2154 attr->cur_qp_state = cmd.cur_qp_state;
2155 attr->path_mtu = cmd.path_mtu;
2156 attr->path_mig_state = cmd.path_mig_state;
2157 attr->qkey = cmd.qkey;
2158 attr->rq_psn = cmd.rq_psn;
2159 attr->sq_psn = cmd.sq_psn;
2160 attr->dest_qp_num = cmd.dest_qp_num;
2161 attr->qp_access_flags = cmd.qp_access_flags;
2162 attr->pkey_index = cmd.pkey_index;
2163 attr->alt_pkey_index = cmd.alt_pkey_index;
2164 attr->en_sqd_async_notify = cmd.en_sqd_async_notify;
2165 attr->max_rd_atomic = cmd.max_rd_atomic;
2166 attr->max_dest_rd_atomic = cmd.max_dest_rd_atomic;
2167 attr->min_rnr_timer = cmd.min_rnr_timer;
2168 attr->port_num = cmd.port_num;
2169 attr->timeout = cmd.timeout;
2170 attr->retry_cnt = cmd.retry_cnt;
2171 attr->rnr_retry = cmd.rnr_retry;
2172 attr->alt_port_num = cmd.alt_port_num;
2173 attr->alt_timeout = cmd.alt_timeout;
2175 memcpy(attr->ah_attr.grh.dgid.raw, cmd.dest.dgid, 16);
2176 attr->ah_attr.grh.flow_label = cmd.dest.flow_label;
2177 attr->ah_attr.grh.sgid_index = cmd.dest.sgid_index;
2178 attr->ah_attr.grh.hop_limit = cmd.dest.hop_limit;
2179 attr->ah_attr.grh.traffic_class = cmd.dest.traffic_class;
2180 attr->ah_attr.dlid = cmd.dest.dlid;
2181 attr->ah_attr.sl = cmd.dest.sl;
2182 attr->ah_attr.src_path_bits = cmd.dest.src_path_bits;
2183 attr->ah_attr.static_rate = cmd.dest.static_rate;
2184 attr->ah_attr.ah_flags = cmd.dest.is_global ? IB_AH_GRH : 0;
2185 attr->ah_attr.port_num = cmd.dest.port_num;
2187 memcpy(attr->alt_ah_attr.grh.dgid.raw, cmd.alt_dest.dgid, 16);
2188 attr->alt_ah_attr.grh.flow_label = cmd.alt_dest.flow_label;
2189 attr->alt_ah_attr.grh.sgid_index = cmd.alt_dest.sgid_index;
2190 attr->alt_ah_attr.grh.hop_limit = cmd.alt_dest.hop_limit;
2191 attr->alt_ah_attr.grh.traffic_class = cmd.alt_dest.traffic_class;
2192 attr->alt_ah_attr.dlid = cmd.alt_dest.dlid;
2193 attr->alt_ah_attr.sl = cmd.alt_dest.sl;
2194 attr->alt_ah_attr.src_path_bits = cmd.alt_dest.src_path_bits;
2195 attr->alt_ah_attr.static_rate = cmd.alt_dest.static_rate;
2196 attr->alt_ah_attr.ah_flags = cmd.alt_dest.is_global ? IB_AH_GRH : 0;
2197 attr->alt_ah_attr.port_num = cmd.alt_dest.port_num;
2199 if (qp->real_qp == qp) {
2200 ret = ib_resolve_eth_l2_attrs(qp, attr, &cmd.attr_mask);
2203 ret = qp->device->modify_qp(qp, attr,
2204 modify_qp_mask(qp->qp_type, cmd.attr_mask), &udata);
2206 ret = ib_modify_qp(qp, attr, modify_qp_mask(qp->qp_type, cmd.attr_mask));
2223 ssize_t ib_uverbs_destroy_qp(struct ib_uverbs_file *file,
2224 const char __user *buf, int in_len,
2227 struct ib_uverbs_destroy_qp cmd;
2228 struct ib_uverbs_destroy_qp_resp resp;
2229 struct ib_uobject *uobj;
2231 struct ib_uqp_object *obj;
2234 if (copy_from_user(&cmd, buf, sizeof cmd))
2237 memset(&resp, 0, sizeof resp);
2239 uobj = idr_write_uobj(&ib_uverbs_qp_idr, cmd.qp_handle, file->ucontext);
2243 obj = container_of(uobj, struct ib_uqp_object, uevent.uobject);
2245 if (!list_empty(&obj->mcast_list)) {
2246 put_uobj_write(uobj);
2250 ret = ib_destroy_qp(qp);
2254 put_uobj_write(uobj);
2260 atomic_dec(&obj->uxrcd->refcnt);
2262 idr_remove_uobj(&ib_uverbs_qp_idr, uobj);
2264 mutex_lock(&file->mutex);
2265 list_del(&uobj->list);
2266 mutex_unlock(&file->mutex);
2268 ib_uverbs_release_uevent(file, &obj->uevent);
2270 resp.events_reported = obj->uevent.events_reported;
2274 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2275 &resp, sizeof resp))
2281 ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
2282 const char __user *buf, int in_len,
2285 struct ib_uverbs_post_send cmd;
2286 struct ib_uverbs_post_send_resp resp;
2287 struct ib_uverbs_send_wr *user_wr;
2288 struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
2292 ssize_t ret = -EINVAL;
2294 if (copy_from_user(&cmd, buf, sizeof cmd))
2297 if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
2298 cmd.sge_count * sizeof (struct ib_uverbs_sge))
2301 if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
2304 user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
2308 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
2312 is_ud = qp->qp_type == IB_QPT_UD;
2315 for (i = 0; i < cmd.wr_count; ++i) {
2316 if (copy_from_user(user_wr,
2317 buf + sizeof cmd + i * cmd.wqe_size,
2323 if (user_wr->num_sge + sg_ind > cmd.sge_count) {
2328 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2329 user_wr->num_sge * sizeof (struct ib_sge),
2343 next->wr_id = user_wr->wr_id;
2344 next->num_sge = user_wr->num_sge;
2345 next->opcode = user_wr->opcode;
2346 next->send_flags = user_wr->send_flags;
2349 next->wr.ud.ah = idr_read_ah(user_wr->wr.ud.ah,
2351 if (!next->wr.ud.ah) {
2355 next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn;
2356 next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey;
2357 if (next->opcode == IB_WR_SEND_WITH_IMM)
2359 (__be32 __force) user_wr->ex.imm_data;
2361 switch (next->opcode) {
2362 case IB_WR_RDMA_WRITE_WITH_IMM:
2364 (__be32 __force) user_wr->ex.imm_data;
2365 case IB_WR_RDMA_WRITE:
2366 case IB_WR_RDMA_READ:
2367 next->wr.rdma.remote_addr =
2368 user_wr->wr.rdma.remote_addr;
2369 next->wr.rdma.rkey =
2370 user_wr->wr.rdma.rkey;
2372 case IB_WR_SEND_WITH_IMM:
2374 (__be32 __force) user_wr->ex.imm_data;
2376 case IB_WR_SEND_WITH_INV:
2377 next->ex.invalidate_rkey =
2378 user_wr->ex.invalidate_rkey;
2380 case IB_WR_ATOMIC_CMP_AND_SWP:
2381 case IB_WR_ATOMIC_FETCH_AND_ADD:
2382 next->wr.atomic.remote_addr =
2383 user_wr->wr.atomic.remote_addr;
2384 next->wr.atomic.compare_add =
2385 user_wr->wr.atomic.compare_add;
2386 next->wr.atomic.swap = user_wr->wr.atomic.swap;
2387 next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
2394 if (next->num_sge) {
2395 next->sg_list = (void *) next +
2396 ALIGN(sizeof *next, sizeof (struct ib_sge));
2397 if (copy_from_user(next->sg_list,
2399 cmd.wr_count * cmd.wqe_size +
2400 sg_ind * sizeof (struct ib_sge),
2401 next->num_sge * sizeof (struct ib_sge))) {
2405 sg_ind += next->num_sge;
2407 next->sg_list = NULL;
2411 ret = qp->device->post_send(qp->real_qp, wr, &bad_wr);
2413 for (next = wr; next; next = next->next) {
2419 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2420 &resp, sizeof resp))
2427 if (is_ud && wr->wr.ud.ah)
2428 put_ah_read(wr->wr.ud.ah);
2437 return ret ? ret : in_len;
2440 static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
2446 struct ib_uverbs_recv_wr *user_wr;
2447 struct ib_recv_wr *wr = NULL, *last, *next;
2452 if (in_len < wqe_size * wr_count +
2453 sge_count * sizeof (struct ib_uverbs_sge))
2454 return ERR_PTR(-EINVAL);
2456 if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
2457 return ERR_PTR(-EINVAL);
2459 user_wr = kmalloc(wqe_size, GFP_KERNEL);
2461 return ERR_PTR(-ENOMEM);
2465 for (i = 0; i < wr_count; ++i) {
2466 if (copy_from_user(user_wr, buf + i * wqe_size,
2472 if (user_wr->num_sge + sg_ind > sge_count) {
2477 next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
2478 user_wr->num_sge * sizeof (struct ib_sge),
2492 next->wr_id = user_wr->wr_id;
2493 next->num_sge = user_wr->num_sge;
2495 if (next->num_sge) {
2496 next->sg_list = (void *) next +
2497 ALIGN(sizeof *next, sizeof (struct ib_sge));
2498 if (copy_from_user(next->sg_list,
2499 buf + wr_count * wqe_size +
2500 sg_ind * sizeof (struct ib_sge),
2501 next->num_sge * sizeof (struct ib_sge))) {
2505 sg_ind += next->num_sge;
2507 next->sg_list = NULL;
2522 return ERR_PTR(ret);
2525 ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
2526 const char __user *buf, int in_len,
2529 struct ib_uverbs_post_recv cmd;
2530 struct ib_uverbs_post_recv_resp resp;
2531 struct ib_recv_wr *wr, *next, *bad_wr;
2533 ssize_t ret = -EINVAL;
2535 if (copy_from_user(&cmd, buf, sizeof cmd))
2538 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2539 in_len - sizeof cmd, cmd.wr_count,
2540 cmd.sge_count, cmd.wqe_size);
2544 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
2549 ret = qp->device->post_recv(qp->real_qp, wr, &bad_wr);
2554 for (next = wr; next; next = next->next) {
2560 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2561 &resp, sizeof resp))
2571 return ret ? ret : in_len;
2574 ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
2575 const char __user *buf, int in_len,
2578 struct ib_uverbs_post_srq_recv cmd;
2579 struct ib_uverbs_post_srq_recv_resp resp;
2580 struct ib_recv_wr *wr, *next, *bad_wr;
2582 ssize_t ret = -EINVAL;
2584 if (copy_from_user(&cmd, buf, sizeof cmd))
2587 wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
2588 in_len - sizeof cmd, cmd.wr_count,
2589 cmd.sge_count, cmd.wqe_size);
2593 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
2598 ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
2603 for (next = wr; next; next = next->next) {
2609 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2610 &resp, sizeof resp))
2620 return ret ? ret : in_len;
2623 ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
2624 const char __user *buf, int in_len,
2627 struct ib_uverbs_create_ah cmd;
2628 struct ib_uverbs_create_ah_resp resp;
2629 struct ib_uobject *uobj;
2632 struct ib_ah_attr attr;
2635 if (out_len < sizeof resp)
2638 if (copy_from_user(&cmd, buf, sizeof cmd))
2641 uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
2645 init_uobj(uobj, cmd.user_handle, file->ucontext, &ah_lock_class);
2646 down_write(&uobj->mutex);
2648 pd = idr_read_pd(cmd.pd_handle, file->ucontext);
2654 attr.dlid = cmd.attr.dlid;
2655 attr.sl = cmd.attr.sl;
2656 attr.src_path_bits = cmd.attr.src_path_bits;
2657 attr.static_rate = cmd.attr.static_rate;
2658 attr.ah_flags = cmd.attr.is_global ? IB_AH_GRH : 0;
2659 attr.port_num = cmd.attr.port_num;
2660 attr.grh.flow_label = cmd.attr.grh.flow_label;
2661 attr.grh.sgid_index = cmd.attr.grh.sgid_index;
2662 attr.grh.hop_limit = cmd.attr.grh.hop_limit;
2663 attr.grh.traffic_class = cmd.attr.grh.traffic_class;
2665 memset(&attr.dmac, 0, sizeof(attr.dmac));
2666 memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
2668 ah = ib_create_ah(pd, &attr);
2677 ret = idr_add_uobj(&ib_uverbs_ah_idr, uobj);
2681 resp.ah_handle = uobj->id;
2683 if (copy_to_user((void __user *) (unsigned long) cmd.response,
2684 &resp, sizeof resp)) {
2691 mutex_lock(&file->mutex);
2692 list_add_tail(&uobj->list, &file->ucontext->ah_list);
2693 mutex_unlock(&file->mutex);
2697 up_write(&uobj->mutex);
2702 idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
2711 put_uobj_write(uobj);
2715 ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
2716 const char __user *buf, int in_len, int out_len)
2718 struct ib_uverbs_destroy_ah cmd;
2720 struct ib_uobject *uobj;
2723 if (copy_from_user(&cmd, buf, sizeof cmd))
2726 uobj = idr_write_uobj(&ib_uverbs_ah_idr, cmd.ah_handle, file->ucontext);
2731 ret = ib_destroy_ah(ah);
2735 put_uobj_write(uobj);
2740 idr_remove_uobj(&ib_uverbs_ah_idr, uobj);
2742 mutex_lock(&file->mutex);
2743 list_del(&uobj->list);
2744 mutex_unlock(&file->mutex);
2751 ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
2752 const char __user *buf, int in_len,
2755 struct ib_uverbs_attach_mcast cmd;
2757 struct ib_uqp_object *obj;
2758 struct ib_uverbs_mcast_entry *mcast;
2761 if (copy_from_user(&cmd, buf, sizeof cmd))
2764 qp = idr_write_qp(cmd.qp_handle, file->ucontext);
2768 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2770 list_for_each_entry(mcast, &obj->mcast_list, list)
2771 if (cmd.mlid == mcast->lid &&
2772 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2777 mcast = kmalloc(sizeof *mcast, GFP_KERNEL);
2783 mcast->lid = cmd.mlid;
2784 memcpy(mcast->gid.raw, cmd.gid, sizeof mcast->gid.raw);
2786 ret = ib_attach_mcast(qp, &mcast->gid, cmd.mlid);
2788 list_add_tail(&mcast->list, &obj->mcast_list);
2795 return ret ? ret : in_len;
2798 ssize_t ib_uverbs_detach_mcast(struct ib_uverbs_file *file,
2799 const char __user *buf, int in_len,
2802 struct ib_uverbs_detach_mcast cmd;
2803 struct ib_uqp_object *obj;
2805 struct ib_uverbs_mcast_entry *mcast;
2808 if (copy_from_user(&cmd, buf, sizeof cmd))
2811 qp = idr_write_qp(cmd.qp_handle, file->ucontext);
2815 ret = ib_detach_mcast(qp, (union ib_gid *) cmd.gid, cmd.mlid);
2819 obj = container_of(qp->uobject, struct ib_uqp_object, uevent.uobject);
2821 list_for_each_entry(mcast, &obj->mcast_list, list)
2822 if (cmd.mlid == mcast->lid &&
2823 !memcmp(cmd.gid, mcast->gid.raw, sizeof mcast->gid.raw)) {
2824 list_del(&mcast->list);
2832 return ret ? ret : in_len;
2835 static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
2836 union ib_flow_spec *ib_spec)
2838 if (kern_spec->reserved)
2841 ib_spec->type = kern_spec->type;
2843 switch (ib_spec->type) {
2844 case IB_FLOW_SPEC_ETH:
2845 ib_spec->eth.size = sizeof(struct ib_flow_spec_eth);
2846 if (ib_spec->eth.size != kern_spec->eth.size)
2848 memcpy(&ib_spec->eth.val, &kern_spec->eth.val,
2849 sizeof(struct ib_flow_eth_filter));
2850 memcpy(&ib_spec->eth.mask, &kern_spec->eth.mask,
2851 sizeof(struct ib_flow_eth_filter));
2853 case IB_FLOW_SPEC_IPV4:
2854 ib_spec->ipv4.size = sizeof(struct ib_flow_spec_ipv4);
2855 if (ib_spec->ipv4.size != kern_spec->ipv4.size)
2857 memcpy(&ib_spec->ipv4.val, &kern_spec->ipv4.val,
2858 sizeof(struct ib_flow_ipv4_filter));
2859 memcpy(&ib_spec->ipv4.mask, &kern_spec->ipv4.mask,
2860 sizeof(struct ib_flow_ipv4_filter));
2862 case IB_FLOW_SPEC_TCP:
2863 case IB_FLOW_SPEC_UDP:
2864 ib_spec->tcp_udp.size = sizeof(struct ib_flow_spec_tcp_udp);
2865 if (ib_spec->tcp_udp.size != kern_spec->tcp_udp.size)
2867 memcpy(&ib_spec->tcp_udp.val, &kern_spec->tcp_udp.val,
2868 sizeof(struct ib_flow_tcp_udp_filter));
2869 memcpy(&ib_spec->tcp_udp.mask, &kern_spec->tcp_udp.mask,
2870 sizeof(struct ib_flow_tcp_udp_filter));
2878 int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
2879 struct ib_udata *ucore,
2880 struct ib_udata *uhw)
2882 struct ib_uverbs_create_flow cmd;
2883 struct ib_uverbs_create_flow_resp resp;
2884 struct ib_uobject *uobj;
2885 struct ib_flow *flow_id;
2886 struct ib_uverbs_flow_attr *kern_flow_attr;
2887 struct ib_flow_attr *flow_attr;
2894 if (ucore->inlen < sizeof(cmd))
2897 if (ucore->outlen < sizeof(resp))
2900 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
2904 ucore->inbuf += sizeof(cmd);
2905 ucore->inlen -= sizeof(cmd);
2910 if ((cmd.flow_attr.type == IB_FLOW_ATTR_SNIFFER &&
2911 !capable(CAP_NET_ADMIN)) || !capable(CAP_NET_RAW))
2914 if (cmd.flow_attr.num_of_specs > IB_FLOW_SPEC_SUPPORT_LAYERS)
2917 if (cmd.flow_attr.size > ucore->inlen ||
2918 cmd.flow_attr.size >
2919 (cmd.flow_attr.num_of_specs * sizeof(struct ib_uverbs_flow_spec)))
2922 if (cmd.flow_attr.reserved[0] ||
2923 cmd.flow_attr.reserved[1])
2926 if (cmd.flow_attr.num_of_specs) {
2927 kern_flow_attr = kmalloc(sizeof(*kern_flow_attr) + cmd.flow_attr.size,
2929 if (!kern_flow_attr)
2932 memcpy(kern_flow_attr, &cmd.flow_attr, sizeof(*kern_flow_attr));
2933 err = ib_copy_from_udata(kern_flow_attr + 1, ucore,
2934 cmd.flow_attr.size);
2938 kern_flow_attr = &cmd.flow_attr;
2941 uobj = kmalloc(sizeof(*uobj), GFP_KERNEL);
2946 init_uobj(uobj, 0, file->ucontext, &rule_lock_class);
2947 down_write(&uobj->mutex);
2949 qp = idr_read_qp(cmd.qp_handle, file->ucontext);
2955 flow_attr = kmalloc(sizeof(*flow_attr) + cmd.flow_attr.size, GFP_KERNEL);
2961 flow_attr->type = kern_flow_attr->type;
2962 flow_attr->priority = kern_flow_attr->priority;
2963 flow_attr->num_of_specs = kern_flow_attr->num_of_specs;
2964 flow_attr->port = kern_flow_attr->port;
2965 flow_attr->flags = kern_flow_attr->flags;
2966 flow_attr->size = sizeof(*flow_attr);
2968 kern_spec = kern_flow_attr + 1;
2969 ib_spec = flow_attr + 1;
2970 for (i = 0; i < flow_attr->num_of_specs &&
2971 cmd.flow_attr.size > offsetof(struct ib_uverbs_flow_spec, reserved) &&
2972 cmd.flow_attr.size >=
2973 ((struct ib_uverbs_flow_spec *)kern_spec)->size; i++) {
2974 err = kern_spec_to_ib_spec(kern_spec, ib_spec);
2978 ((union ib_flow_spec *) ib_spec)->size;
2979 cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size;
2980 kern_spec += ((struct ib_uverbs_flow_spec *) kern_spec)->size;
2981 ib_spec += ((union ib_flow_spec *) ib_spec)->size;
2983 if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
2984 pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
2985 i, cmd.flow_attr.size);
2989 flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER);
2990 if (IS_ERR(flow_id)) {
2991 err = PTR_ERR(flow_id);
2995 flow_id->uobject = uobj;
2996 uobj->object = flow_id;
2998 err = idr_add_uobj(&ib_uverbs_rule_idr, uobj);
3002 memset(&resp, 0, sizeof(resp));
3003 resp.flow_handle = uobj->id;
3005 err = ib_copy_to_udata(ucore,
3006 &resp, sizeof(resp));
3011 mutex_lock(&file->mutex);
3012 list_add_tail(&uobj->list, &file->ucontext->rule_list);
3013 mutex_unlock(&file->mutex);
3017 up_write(&uobj->mutex);
3019 if (cmd.flow_attr.num_of_specs)
3020 kfree(kern_flow_attr);
3023 idr_remove_uobj(&ib_uverbs_rule_idr, uobj);
3025 ib_destroy_flow(flow_id);
3031 put_uobj_write(uobj);
3033 if (cmd.flow_attr.num_of_specs)
3034 kfree(kern_flow_attr);
3038 int ib_uverbs_ex_destroy_flow(struct ib_uverbs_file *file,
3039 struct ib_udata *ucore,
3040 struct ib_udata *uhw)
3042 struct ib_uverbs_destroy_flow cmd;
3043 struct ib_flow *flow_id;
3044 struct ib_uobject *uobj;
3047 if (ucore->inlen < sizeof(cmd))
3050 ret = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3057 uobj = idr_write_uobj(&ib_uverbs_rule_idr, cmd.flow_handle,
3061 flow_id = uobj->object;
3063 ret = ib_destroy_flow(flow_id);
3067 put_uobj_write(uobj);
3069 idr_remove_uobj(&ib_uverbs_rule_idr, uobj);
3071 mutex_lock(&file->mutex);
3072 list_del(&uobj->list);
3073 mutex_unlock(&file->mutex);
3080 static int __uverbs_create_xsrq(struct ib_uverbs_file *file,
3081 struct ib_uverbs_create_xsrq *cmd,
3082 struct ib_udata *udata)
3084 struct ib_uverbs_create_srq_resp resp;
3085 struct ib_usrq_object *obj;
3088 struct ib_uobject *uninitialized_var(xrcd_uobj);
3089 struct ib_srq_init_attr attr;
3092 obj = kmalloc(sizeof *obj, GFP_KERNEL);
3096 init_uobj(&obj->uevent.uobject, cmd->user_handle, file->ucontext, &srq_lock_class);
3097 down_write(&obj->uevent.uobject.mutex);
3099 if (cmd->srq_type == IB_SRQT_XRC) {
3100 attr.ext.xrc.xrcd = idr_read_xrcd(cmd->xrcd_handle, file->ucontext, &xrcd_uobj);
3101 if (!attr.ext.xrc.xrcd) {
3106 obj->uxrcd = container_of(xrcd_uobj, struct ib_uxrcd_object, uobject);
3107 atomic_inc(&obj->uxrcd->refcnt);
3109 attr.ext.xrc.cq = idr_read_cq(cmd->cq_handle, file->ucontext, 0);
3110 if (!attr.ext.xrc.cq) {
3116 pd = idr_read_pd(cmd->pd_handle, file->ucontext);
3122 attr.event_handler = ib_uverbs_srq_event_handler;
3123 attr.srq_context = file;
3124 attr.srq_type = cmd->srq_type;
3125 attr.attr.max_wr = cmd->max_wr;
3126 attr.attr.max_sge = cmd->max_sge;
3127 attr.attr.srq_limit = cmd->srq_limit;
3129 obj->uevent.events_reported = 0;
3130 INIT_LIST_HEAD(&obj->uevent.event_list);
3132 srq = pd->device->create_srq(pd, &attr, udata);
3138 srq->device = pd->device;
3140 srq->srq_type = cmd->srq_type;
3141 srq->uobject = &obj->uevent.uobject;
3142 srq->event_handler = attr.event_handler;
3143 srq->srq_context = attr.srq_context;
3145 if (cmd->srq_type == IB_SRQT_XRC) {
3146 srq->ext.xrc.cq = attr.ext.xrc.cq;
3147 srq->ext.xrc.xrcd = attr.ext.xrc.xrcd;
3148 atomic_inc(&attr.ext.xrc.cq->usecnt);
3149 atomic_inc(&attr.ext.xrc.xrcd->usecnt);
3152 atomic_inc(&pd->usecnt);
3153 atomic_set(&srq->usecnt, 0);
3155 obj->uevent.uobject.object = srq;
3156 ret = idr_add_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject);
3160 memset(&resp, 0, sizeof resp);
3161 resp.srq_handle = obj->uevent.uobject.id;
3162 resp.max_wr = attr.attr.max_wr;
3163 resp.max_sge = attr.attr.max_sge;
3164 if (cmd->srq_type == IB_SRQT_XRC)
3165 resp.srqn = srq->ext.xrc.srq_num;
3167 if (copy_to_user((void __user *) (unsigned long) cmd->response,
3168 &resp, sizeof resp)) {
3173 if (cmd->srq_type == IB_SRQT_XRC) {
3174 put_uobj_read(xrcd_uobj);
3175 put_cq_read(attr.ext.xrc.cq);
3179 mutex_lock(&file->mutex);
3180 list_add_tail(&obj->uevent.uobject.list, &file->ucontext->srq_list);
3181 mutex_unlock(&file->mutex);
3183 obj->uevent.uobject.live = 1;
3185 up_write(&obj->uevent.uobject.mutex);
3190 idr_remove_uobj(&ib_uverbs_srq_idr, &obj->uevent.uobject);
3193 ib_destroy_srq(srq);
3199 if (cmd->srq_type == IB_SRQT_XRC)
3200 put_cq_read(attr.ext.xrc.cq);
3203 if (cmd->srq_type == IB_SRQT_XRC) {
3204 atomic_dec(&obj->uxrcd->refcnt);
3205 put_uobj_read(xrcd_uobj);
3209 put_uobj_write(&obj->uevent.uobject);
3213 ssize_t ib_uverbs_create_srq(struct ib_uverbs_file *file,
3214 const char __user *buf, int in_len,
3217 struct ib_uverbs_create_srq cmd;
3218 struct ib_uverbs_create_xsrq xcmd;
3219 struct ib_uverbs_create_srq_resp resp;
3220 struct ib_udata udata;
3223 if (out_len < sizeof resp)
3226 if (copy_from_user(&cmd, buf, sizeof cmd))
3229 xcmd.response = cmd.response;
3230 xcmd.user_handle = cmd.user_handle;
3231 xcmd.srq_type = IB_SRQT_BASIC;
3232 xcmd.pd_handle = cmd.pd_handle;
3233 xcmd.max_wr = cmd.max_wr;
3234 xcmd.max_sge = cmd.max_sge;
3235 xcmd.srq_limit = cmd.srq_limit;
3237 INIT_UDATA(&udata, buf + sizeof cmd,
3238 (unsigned long) cmd.response + sizeof resp,
3239 in_len - sizeof cmd, out_len - sizeof resp);
3241 ret = __uverbs_create_xsrq(file, &xcmd, &udata);
3248 ssize_t ib_uverbs_create_xsrq(struct ib_uverbs_file *file,
3249 const char __user *buf, int in_len, int out_len)
3251 struct ib_uverbs_create_xsrq cmd;
3252 struct ib_uverbs_create_srq_resp resp;
3253 struct ib_udata udata;
3256 if (out_len < sizeof resp)
3259 if (copy_from_user(&cmd, buf, sizeof cmd))
3262 INIT_UDATA(&udata, buf + sizeof cmd,
3263 (unsigned long) cmd.response + sizeof resp,
3264 in_len - sizeof cmd, out_len - sizeof resp);
3266 ret = __uverbs_create_xsrq(file, &cmd, &udata);
3273 ssize_t ib_uverbs_modify_srq(struct ib_uverbs_file *file,
3274 const char __user *buf, int in_len,
3277 struct ib_uverbs_modify_srq cmd;
3278 struct ib_udata udata;
3280 struct ib_srq_attr attr;
3283 if (copy_from_user(&cmd, buf, sizeof cmd))
3286 INIT_UDATA(&udata, buf + sizeof cmd, NULL, in_len - sizeof cmd,
3289 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
3293 attr.max_wr = cmd.max_wr;
3294 attr.srq_limit = cmd.srq_limit;
3296 ret = srq->device->modify_srq(srq, &attr, cmd.attr_mask, &udata);
3300 return ret ? ret : in_len;
3303 ssize_t ib_uverbs_query_srq(struct ib_uverbs_file *file,
3304 const char __user *buf,
3305 int in_len, int out_len)
3307 struct ib_uverbs_query_srq cmd;
3308 struct ib_uverbs_query_srq_resp resp;
3309 struct ib_srq_attr attr;
3313 if (out_len < sizeof resp)
3316 if (copy_from_user(&cmd, buf, sizeof cmd))
3319 srq = idr_read_srq(cmd.srq_handle, file->ucontext);
3323 ret = ib_query_srq(srq, &attr);
3330 memset(&resp, 0, sizeof resp);
3332 resp.max_wr = attr.max_wr;
3333 resp.max_sge = attr.max_sge;
3334 resp.srq_limit = attr.srq_limit;
3336 if (copy_to_user((void __user *) (unsigned long) cmd.response,
3337 &resp, sizeof resp))
3343 ssize_t ib_uverbs_destroy_srq(struct ib_uverbs_file *file,
3344 const char __user *buf, int in_len,
3347 struct ib_uverbs_destroy_srq cmd;
3348 struct ib_uverbs_destroy_srq_resp resp;
3349 struct ib_uobject *uobj;
3351 struct ib_uevent_object *obj;
3353 struct ib_usrq_object *us;
3354 enum ib_srq_type srq_type;
3356 if (copy_from_user(&cmd, buf, sizeof cmd))
3359 uobj = idr_write_uobj(&ib_uverbs_srq_idr, cmd.srq_handle, file->ucontext);
3363 obj = container_of(uobj, struct ib_uevent_object, uobject);
3364 srq_type = srq->srq_type;
3366 ret = ib_destroy_srq(srq);
3370 put_uobj_write(uobj);
3375 if (srq_type == IB_SRQT_XRC) {
3376 us = container_of(obj, struct ib_usrq_object, uevent);
3377 atomic_dec(&us->uxrcd->refcnt);
3380 idr_remove_uobj(&ib_uverbs_srq_idr, uobj);
3382 mutex_lock(&file->mutex);
3383 list_del(&uobj->list);
3384 mutex_unlock(&file->mutex);
3386 ib_uverbs_release_uevent(file, obj);
3388 memset(&resp, 0, sizeof resp);
3389 resp.events_reported = obj->events_reported;
3393 if (copy_to_user((void __user *) (unsigned long) cmd.response,
3394 &resp, sizeof resp))
3397 return ret ? ret : in_len;
3400 int ib_uverbs_ex_query_device(struct ib_uverbs_file *file,
3401 struct ib_udata *ucore,
3402 struct ib_udata *uhw)
3404 struct ib_uverbs_ex_query_device_resp resp;
3405 struct ib_uverbs_ex_query_device cmd;
3406 struct ib_device_attr attr;
3407 struct ib_device *device;
3410 device = file->device->ib_dev;
3411 if (ucore->inlen < sizeof(cmd))
3414 err = ib_copy_from_udata(&cmd, ucore, sizeof(cmd));
3424 resp.response_length = offsetof(typeof(resp), odp_caps);
3426 if (ucore->outlen < resp.response_length)
3429 memset(&attr, 0, sizeof(attr));
3431 err = device->query_device(device, &attr, uhw);
3435 copy_query_dev_fields(file, &resp.base, &attr);
3438 if (ucore->outlen < resp.response_length + sizeof(resp.odp_caps))
3441 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
3442 resp.odp_caps.general_caps = attr.odp_caps.general_caps;
3443 resp.odp_caps.per_transport_caps.rc_odp_caps =
3444 attr.odp_caps.per_transport_caps.rc_odp_caps;
3445 resp.odp_caps.per_transport_caps.uc_odp_caps =
3446 attr.odp_caps.per_transport_caps.uc_odp_caps;
3447 resp.odp_caps.per_transport_caps.ud_odp_caps =
3448 attr.odp_caps.per_transport_caps.ud_odp_caps;
3449 resp.odp_caps.reserved = 0;
3451 memset(&resp.odp_caps, 0, sizeof(resp.odp_caps));
3453 resp.response_length += sizeof(resp.odp_caps);
3455 if (ucore->outlen < resp.response_length + sizeof(resp.timestamp_mask))
3458 resp.timestamp_mask = attr.timestamp_mask;
3459 resp.response_length += sizeof(resp.timestamp_mask);
3461 if (ucore->outlen < resp.response_length + sizeof(resp.hca_core_clock))
3464 resp.hca_core_clock = attr.hca_core_clock;
3465 resp.response_length += sizeof(resp.hca_core_clock);
3468 err = ib_copy_to_udata(ucore, &resp, resp.response_length);