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diff --git a/sys/dev/ice/irdma_di_if.m b/sys/dev/ice/irdma_di_if.m
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+# SPDX-License-Identifier: BSD-3-Clause 
+#  Copyright (c) 2021, Intel Corporation
+#  All rights reserved.
+#
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions are met:
+#
+#   1. Redistributions of source code must retain the above copyright notice,
+#      this list of conditions and the following disclaimer.
+#
+#   2. 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.
+#
+#   3. Neither the name of the Intel Corporation nor the names of its
+#      contributors may be used to endorse or promote products derived from
+#      this software without specific prior written permission.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+#  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+#  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+#  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+#  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+#  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+#  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+#  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+#  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+#  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+#  POSSIBILITY OF SUCH DAMAGE.
+# $FreeBSD$
+
+/**
+ * @file irdma_di_if.m
+ * @brief RDMA client kobject driver interface
+ *
+ * KObject methods implemented by the ice driver. These functions are called
+ * by the RDMA client driver to connect with the ice driver and request
+ * operations or notify the driver of RDMA events.
+ */
+#include "ice_rdma.h"
+
+INTERFACE irdma_di;
+
+/**
+ * reset - Request the ice driver to perform a reset
+ * @peer: the RDMA peer structure
+ *
+ * Called by the RDMA client driver to request a reset of the ice device.
+ */
+METHOD int reset {
+	struct ice_rdma_peer *peer;
+};
+
+/**
+ * msix_init - Initialize MSI-X resources for the RDMA driver
+ * @peer: the RDMA peer structure
+ * @msix_info: the requested MSI-X mapping
+ *
+ * Called by the RDMA client driver to request initialization of the MSI-X
+ * resources used for RDMA functionality.
+ */
+METHOD int msix_init {
+	struct ice_rdma_peer *peer;
+	struct ice_rdma_msix_mapping *msix_info;
+};
+
+/**
+ * qset_register_request - RDMA client interface request qset
+ *                         registration or deregistration
+ * @peer: the RDMA peer client structure
+ * @res: resources to be registered or unregistered
+ */
+METHOD int qset_register_request {
+	struct ice_rdma_peer *peer;
+	struct ice_rdma_qset_update *res;
+};
+
+/**
+ * vsi_filter_update - configure vsi information
+ *                     when opening or closing rdma driver
+ * @peer: the RDMA peer client structure
+ * @enable: enable or disable the rdma filter
+ */
+METHOD int vsi_filter_update {
+	struct ice_rdma_peer *peer;
+	bool enable;
+};
+
+/**
+ * req_handler - handle requests incoming from RDMA driver
+ * @peer: the RDMA peer client structure
+ * @req: structure containing request
+ */
+METHOD void req_handler {
+	struct ice_rdma_peer *peer;
+	struct ice_rdma_request *req;
+};