--- /dev/null
+/*
+ * Copyright (c) 2018, 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 "uverbs.h"
+#include <rdma/uverbs_std_types.h>
+
+static int uverbs_free_dm(struct ib_uobject *uobject,
+ enum rdma_remove_reason why)
+{
+ struct ib_dm *dm = uobject->object;
+
+ if (why == RDMA_REMOVE_DESTROY && atomic_read(&dm->usecnt))
+ return -EBUSY;
+
+ return dm->device->dealloc_dm(dm);
+}
+
+static int UVERBS_HANDLER(UVERBS_METHOD_DM_ALLOC)(struct ib_device *ib_dev,
+ struct ib_uverbs_file *file,
+ struct uverbs_attr_bundle *attrs)
+{
+ struct ib_ucontext *ucontext = file->ucontext;
+ struct ib_dm_alloc_attr attr = {};
+ struct ib_uobject *uobj;
+ struct ib_dm *dm;
+ int ret;
+
+ if (!ib_dev->alloc_dm)
+ return -EOPNOTSUPP;
+
+ ret = uverbs_copy_from(&attr.length, attrs,
+ UVERBS_ATTR_ALLOC_DM_LENGTH);
+ if (ret)
+ return ret;
+
+ ret = uverbs_copy_from(&attr.alignment, attrs,
+ UVERBS_ATTR_ALLOC_DM_ALIGNMENT);
+ if (ret)
+ return ret;
+
+ uobj = uverbs_attr_get(attrs, UVERBS_ATTR_ALLOC_DM_HANDLE)->obj_attr.uobject;
+
+ dm = ib_dev->alloc_dm(ib_dev, ucontext, &attr, attrs);
+ if (IS_ERR(dm))
+ return PTR_ERR(dm);
+
+ dm->device = ib_dev;
+ dm->length = attr.length;
+ dm->uobject = uobj;
+ atomic_set(&dm->usecnt, 0);
+
+ uobj->object = dm;
+
+ return 0;
+}
+
+static DECLARE_UVERBS_NAMED_METHOD(UVERBS_METHOD_DM_ALLOC,
+ &UVERBS_ATTR_IDR(UVERBS_ATTR_ALLOC_DM_HANDLE, UVERBS_OBJECT_DM,
+ UVERBS_ACCESS_NEW,
+ UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
+ &UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ALLOC_DM_LENGTH,
+ UVERBS_ATTR_TYPE(u64),
+ UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)),
+ &UVERBS_ATTR_PTR_IN(UVERBS_ATTR_ALLOC_DM_ALIGNMENT,
+ UVERBS_ATTR_TYPE(u32),
+ UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)));
+
+static DECLARE_UVERBS_NAMED_METHOD_WITH_HANDLER(UVERBS_METHOD_DM_FREE,
+ uverbs_destroy_def_handler,
+ &UVERBS_ATTR_IDR(UVERBS_ATTR_FREE_DM_HANDLE,
+ UVERBS_OBJECT_DM,
+ UVERBS_ACCESS_DESTROY,
+ UA_FLAGS(UVERBS_ATTR_SPEC_F_MANDATORY)));
+
+DECLARE_UVERBS_NAMED_OBJECT(UVERBS_OBJECT_DM,
+ /* 1 is used in order to free the DM after MRs */
+ &UVERBS_TYPE_ALLOC_IDR(1, uverbs_free_dm),
+ &UVERBS_METHOD(UVERBS_METHOD_DM_ALLOC),
+ &UVERBS_METHOD(UVERBS_METHOD_DM_FREE));
u16 max_cq_moderation_period;
};
+struct ib_dm_alloc_attr {
+ u64 length;
+ u32 alignment;
+ u32 flags;
+};
+
struct ib_device_attr {
u64 fw_ver;
__be64 sys_image_guid;
struct rdma_restrack_entry res;
};
+struct ib_dm {
+ struct ib_device *device;
+ u32 length;
+ u32 flags;
+ struct ib_uobject *uobject;
+ atomic_t usecnt;
+};
+
struct ib_mr {
struct ib_device *device;
struct ib_pd *pd;
int (*modify_flow_action_esp)(struct ib_flow_action *action,
const struct ib_flow_action_attrs_esp *attr,
struct uverbs_attr_bundle *attrs);
-
+ struct ib_dm * (*alloc_dm)(struct ib_device *device,
+ struct ib_ucontext *context,
+ struct ib_dm_alloc_attr *attr,
+ struct uverbs_attr_bundle *attrs);
+ int (*dealloc_dm)(struct ib_dm *dm);
/**
* rdma netdev operation
*