diff --git a/drivers/infiniband/core/Makefile b/drivers/infiniband/core/Makefile
index 1819623..c336d9c 100644
--- a/drivers/infiniband/core/Makefile
+++ b/drivers/infiniband/core/Makefile
@@ -29,4 +29,4 @@ ib_umad-y :=			user_mad.o
 ib_ucm-y :=			ucm.o
 
 ib_uverbs-y :=			uverbs_main.o uverbs_cmd.o uverbs_marshall.o \
-				rdma_core.o
+				rdma_core.o uverbs_std_types.o
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
index 662a592..f09b39e 100644
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -201,9 +201,12 @@ void ib_uverbs_release_uevent(struct ib_uverbs_file *file,
 void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr);
 void ib_uverbs_event_handler(struct ib_event_handler *handler,
 			     struct ib_event *event);
-void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, struct ib_xrcd *xrcd);
+int ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev, struct ib_xrcd *xrcd,
+			   enum rdma_remove_reason why);
 
 int uverbs_dealloc_mw(struct ib_mw *mw);
+void ib_uverbs_detach_umcast(struct ib_qp *qp,
+			     struct ib_uqp_object *uobj);
 
 struct ib_uverbs_flow_spec {
 	union {
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 29c621d..3d651f3 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -939,19 +939,25 @@ ssize_t ib_uverbs_close_xrcd(struct ib_uverbs_file *file,
 	return ret;
 }
 
-void ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev,
-			    struct ib_xrcd *xrcd)
+int ib_uverbs_dealloc_xrcd(struct ib_uverbs_device *dev,
+			   struct ib_xrcd *xrcd,
+			   enum rdma_remove_reason why)
 {
 	struct inode *inode;
+	int ret;
 
 	inode = xrcd->inode;
 	if (inode && !atomic_dec_and_test(&xrcd->usecnt))
-		return;
+		return 0;
 
-	ib_dealloc_xrcd(xrcd);
+	ret = ib_dealloc_xrcd(xrcd);
 
-	if (inode)
+	if (why == RDMA_REMOVE_DESTROY && ret)
+		atomic_inc(&xrcd->usecnt);
+	else if (inode)
 		xrcd_table_delete(dev, inode);
+
+	return ret;
 }
 
 ssize_t ib_uverbs_reg_mr(struct ib_uverbs_file *file,
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 8344afd..2e9047a 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -200,8 +200,8 @@ void ib_uverbs_release_uevent(struct ib_uverbs_file *file,
 	spin_unlock_irq(&file->async_file->lock);
 }
 
-static void ib_uverbs_detach_umcast(struct ib_qp *qp,
-				    struct ib_uqp_object *uobj)
+void ib_uverbs_detach_umcast(struct ib_qp *qp,
+			     struct ib_uqp_object *uobj)
 {
 	struct ib_uverbs_mcast_entry *mcast, *tmp;
 
@@ -316,7 +316,9 @@ static int ib_uverbs_cleanup_ucontext(struct ib_uverbs_file *file,
 			container_of(uobj, struct ib_uxrcd_object, uobject);
 
 		idr_remove_uobj(uobj);
-		ib_uverbs_dealloc_xrcd(file->device, xrcd);
+		ib_uverbs_dealloc_xrcd(file->device, xrcd,
+				       file->ucontext ? RDMA_REMOVE_CLOSE :
+				       RDMA_REMOVE_DRIVER_REMOVE);
 		kfree(uxrcd);
 	}
 	mutex_unlock(&file->device->xrcd_tree_mutex);
diff --git a/drivers/infiniband/core/uverbs_std_types.c b/drivers/infiniband/core/uverbs_std_types.c
new file mode 100644
index 0000000..a514556
--- /dev/null
+++ b/drivers/infiniband/core/uverbs_std_types.c
@@ -0,0 +1,244 @@
+/*
+ * Copyright (c) 2017, Mellanox Technologies inc.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <rdma/uverbs_std_types.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_verbs.h>
+#include <linux/bug.h>
+#include <linux/file.h>
+#include "rdma_core.h"
+#include "uverbs.h"
+
+int uverbs_free_ah(struct ib_uobject *uobject,
+		   enum rdma_remove_reason why)
+{
+	return ib_destroy_ah((struct ib_ah *)uobject->object);
+}
+
+int uverbs_free_flow(struct ib_uobject *uobject,
+		     enum rdma_remove_reason why)
+{
+	return ib_destroy_flow((struct ib_flow *)uobject->object);
+}
+
+int uverbs_free_mw(struct ib_uobject *uobject,
+		   enum rdma_remove_reason why)
+{
+	return uverbs_dealloc_mw((struct ib_mw *)uobject->object);
+}
+
+int uverbs_free_qp(struct ib_uobject *uobject,
+		   enum rdma_remove_reason why)
+{
+	struct ib_qp *qp = uobject->object;
+	struct ib_uqp_object *uqp =
+		container_of(uobject, struct ib_uqp_object, uevent.uobject);
+	int ret;
+
+	if (why == RDMA_REMOVE_DESTROY) {
+		if (!list_empty(&uqp->mcast_list))
+			return -EBUSY;
+	} else if (qp == qp->real_qp) {
+		ib_uverbs_detach_umcast(qp, uqp);
+	}
+
+	ret = ib_destroy_qp(qp);
+	if (ret && why == RDMA_REMOVE_DESTROY)
+		return ret;
+
+	if (uqp->uxrcd)
+		atomic_dec(&uqp->uxrcd->refcnt);
+
+	ib_uverbs_release_uevent(uobject->context->ufile, &uqp->uevent);
+	return ret;
+}
+
+int uverbs_free_rwq_ind_tbl(struct ib_uobject *uobject,
+			    enum rdma_remove_reason why)
+{
+	struct ib_rwq_ind_table *rwq_ind_tbl = uobject->object;
+	struct ib_wq **ind_tbl = rwq_ind_tbl->ind_tbl;
+	int ret;
+
+	ret = ib_destroy_rwq_ind_table(rwq_ind_tbl);
+	if (!ret || why != RDMA_REMOVE_DESTROY)
+		kfree(ind_tbl);
+	return ret;
+}
+
+int uverbs_free_wq(struct ib_uobject *uobject,
+		   enum rdma_remove_reason why)
+{
+	struct ib_wq *wq = uobject->object;
+	struct ib_uwq_object *uwq =
+		container_of(uobject, struct ib_uwq_object, uevent.uobject);
+	int ret;
+
+	ret = ib_destroy_wq(wq);
+	if (!ret || why != RDMA_REMOVE_DESTROY)
+		ib_uverbs_release_uevent(uobject->context->ufile, &uwq->uevent);
+	return ret;
+}
+
+int uverbs_free_srq(struct ib_uobject *uobject,
+		    enum rdma_remove_reason why)
+{
+	struct ib_srq *srq = uobject->object;
+	struct ib_uevent_object *uevent =
+		container_of(uobject, struct ib_uevent_object, uobject);
+	enum ib_srq_type  srq_type = srq->srq_type;
+	int ret;
+
+	ret = ib_destroy_srq(srq);
+
+	if (ret && why == RDMA_REMOVE_DESTROY)
+		return ret;
+
+	if (srq_type == IB_SRQT_XRC) {
+		struct ib_usrq_object *us =
+			container_of(uevent, struct ib_usrq_object, uevent);
+
+		atomic_dec(&us->uxrcd->refcnt);
+	}
+
+	ib_uverbs_release_uevent(uobject->context->ufile, uevent);
+	return ret;
+}
+
+int uverbs_free_cq(struct ib_uobject *uobject,
+		   enum rdma_remove_reason why)
+{
+	struct ib_cq *cq = uobject->object;
+	struct ib_uverbs_event_file *ev_file = cq->cq_context;
+	struct ib_ucq_object *ucq =
+		container_of(uobject, struct ib_ucq_object, uobject);
+	int ret;
+
+	ret = ib_destroy_cq(cq);
+	if (!ret || why != RDMA_REMOVE_DESTROY)
+		ib_uverbs_release_ucq(uobject->context->ufile, ev_file, ucq);
+	return ret;
+}
+
+int uverbs_free_mr(struct ib_uobject *uobject,
+		   enum rdma_remove_reason why)
+{
+	return ib_dereg_mr((struct ib_mr *)uobject->object);
+}
+
+int uverbs_free_xrcd(struct ib_uobject *uobject,
+		     enum rdma_remove_reason why)
+{
+	struct ib_xrcd *xrcd = uobject->object;
+	struct ib_uxrcd_object *uxrcd =
+		container_of(uobject, struct ib_uxrcd_object, uobject);
+	int ret;
+
+	mutex_lock(&uobject->context->ufile->device->xrcd_tree_mutex);
+	if (why == RDMA_REMOVE_DESTROY && atomic_read(&uxrcd->refcnt))
+		ret = -EBUSY;
+	else
+		ret = ib_uverbs_dealloc_xrcd(uobject->context->ufile->device,
+					     xrcd, why);
+	mutex_unlock(&uobject->context->ufile->device->xrcd_tree_mutex);
+
+	return ret;
+}
+
+int uverbs_free_pd(struct ib_uobject *uobject,
+		   enum rdma_remove_reason why)
+{
+	struct ib_pd *pd = uobject->object;
+
+	if (why == RDMA_REMOVE_DESTROY && atomic_read(&pd->usecnt))
+		return -EBUSY;
+
+	ib_dealloc_pd((struct ib_pd *)uobject->object);
+	return 0;
+}
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_cq = {
+	.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_ucq_object), 0),
+	.destroy_object = uverbs_free_cq,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_qp = {
+	.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uqp_object), 0),
+	.destroy_object = uverbs_free_qp,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_mw = {
+	.type = UVERBS_TYPE_ALLOC_IDR(0),
+	.destroy_object = uverbs_free_mw,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_mr = {
+	/* 1 is used in order to free the MR after all the MWs */
+	.type = UVERBS_TYPE_ALLOC_IDR(1),
+	.destroy_object = uverbs_free_mr,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_srq = {
+	.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_usrq_object), 0),
+	.destroy_object = uverbs_free_srq,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_ah = {
+	.type = UVERBS_TYPE_ALLOC_IDR(0),
+	.destroy_object = uverbs_free_ah,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_flow = {
+	.type = UVERBS_TYPE_ALLOC_IDR(0),
+	.destroy_object = uverbs_free_flow,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_wq = {
+	.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uwq_object), 0),
+	.destroy_object = uverbs_free_wq,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_rwq_ind_table = {
+	.type = UVERBS_TYPE_ALLOC_IDR(0),
+	.destroy_object = uverbs_free_rwq_ind_tbl,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_xrcd = {
+	.type = UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uxrcd_object), 0),
+	.destroy_object = uverbs_free_xrcd,
+};
+
+const struct uverbs_obj_idr_type uverbs_type_attrs_pd = {
+	/* 2 is used in order to free the PD after MRs */
+	.type = UVERBS_TYPE_ALLOC_IDR(2),
+	.destroy_object = uverbs_free_pd,
+};
diff --git a/include/rdma/uverbs_std_types.h b/include/rdma/uverbs_std_types.h
new file mode 100644
index 0000000..2edb776
--- /dev/null
+++ b/include/rdma/uverbs_std_types.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2017, Mellanox Technologies inc.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _UVERBS_STD_TYPES__
+#define _UVERBS_STD_TYPES__
+
+#include <rdma/uverbs_types.h>
+
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_cq;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_qp;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_rwq_ind_table;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_wq;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_srq;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_ah;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_flow;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_mr;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_mw;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_pd;
+extern const struct uverbs_obj_idr_type uverbs_type_attrs_xrcd;
+#endif
+
diff --git a/include/rdma/uverbs_types.h b/include/rdma/uverbs_types.h
index 5d89e2b..93a3bcb 100644
--- a/include/rdma/uverbs_types.h
+++ b/include/rdma/uverbs_types.h
@@ -130,4 +130,18 @@ struct ib_uobject *rdma_alloc_begin_uobject(const struct uverbs_obj_type *type,
 int __must_check rdma_remove_commit_uobject(struct ib_uobject *uobj);
 int rdma_alloc_commit_uobject(struct ib_uobject *uobj);
 
+extern const struct uverbs_obj_type_class uverbs_idr_class;
+
+#define UVERBS_BUILD_BUG_ON(cond) (sizeof(char[1 - 2 * !!(cond)]) -	\
+				   sizeof(char))
+#define UVERBS_TYPE_ALLOC_IDR_SZ(_size, _order)				\
+	{								\
+		.destroy_order = _order,				\
+		.type_class = &uverbs_idr_class,			\
+		.obj_size = (_size) +					\
+			  UVERBS_BUILD_BUG_ON((_size) <			\
+					      sizeof(struct ib_uobject)), \
+	}
+#define UVERBS_TYPE_ALLOC_IDR(_order)					\
+	 UVERBS_TYPE_ALLOC_IDR_SZ(sizeof(struct ib_uobject), _order)
 #endif
