MF11 r320731,320749,320759: Add Amazon Elastic Network Adapter driver

and turn it on in EC2 AMI builds

Approved by:	re (gjb)
Relnotes:	FreeBSD now supports "next generation" Enhanced Networking
		in the Amazon EC2 cloud
Sponsored by:	Amazon.com Inc. (original work)

19 files changed, 12317 insertions, 1 deletions

diff --git a/release/Makefile.ec2 b/release/Makefile.ec2
index 45a08e4..b413ea5 100644
--- a/release/Makefile.ec2
+++ b/release/Makefile.ec2
@@ -51,7 +51,7 @@ ec2ami: cw-ec2 ${CW_EC2_PORTINSTALL}
 	@echo "--------------------------------------------------------------"
 	@false
 .endif
-	/usr/local/bin/bsdec2-image-upload ${PUBLISH} --sriov \
+	/usr/local/bin/bsdec2-image-upload ${PUBLISH} --sriov --ena \
 	    ${.OBJDIR}/ec2.raw \
 	    "${TYPE} ${REVISION}-${BRANCH}-${TARGET}${AMINAMESUFFIX}" \
 	    "${TYPE} ${REVISION}-${BRANCH}-${TARGET}" \
diff --git a/release/tools/ec2.conf b/release/tools/ec2.conf
index 4581788..4a7a1e8 100644
--- a/release/tools/ec2.conf
+++ b/release/tools/ec2.conf
@@ -78,6 +78,9 @@ vm_extra_pre_umount() {
 	# nodes, but apply the workaround just in case.
 	echo 'hw.broken_txfifo="1"' >> ${DESTDIR}/boot/loader.conf
 
+	# Load the kernel module for the Amazon "Elastic Network Adapter"
+	echo 'if_ena_load="YES"' >> ${DESTDIR}/boot/loader.conf
+
 	# The first time the AMI boots, the installed "first boot" scripts
 	# should be allowed to run:
 	# * ec2_configinit (download and process EC2 user-data)
diff --git a/share/man/man4/ena.4 b/share/man/man4/ena.4
new file mode 100644
index 0000000..90e5839
--- /dev/null
+++ b/share/man/man4/ena.4
@@ -0,0 +1,255 @@
+.\" Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+.\" 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.
+.\"
+.\" 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd May 04, 2017
+.Dt ENA 4
+.Os
+.Sh NAME
+.Nm ena
+.Nd "FreeBSD kernel driver for Elastic Network Adapter (ENA) family"
+.Sh SYNOPSIS
+To compile this driver into the kernel,
+place the following line in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device ena"
+.Ed
+.Pp
+Alternatively, to load the driver as a
+module at boot time, place the following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+if_ena_load="YES"
+.Ed
+.Sh DESCRIPTION
+The ENA is a networking interface designed to make good use of modern CPU
+features and system architectures.
+.Pp
+The ENA device exposes a lightweight management interface with a
+minimal set of memory mapped registers and extendable command set
+through an Admin Queue.
+.Pp
+The driver supports a range of ENA devices, is link-speed independent
+(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
+a negotiated and extendable feature set.
+.Pp
+Some ENA devices support SR-IOV. This driver is used for both the
+SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
+.Pp
+The ENA devices enable high speed and low overhead network traffic
+processing by providing multiple Tx/Rx queue pairs (the maximum number
+is advertised by the device via the Admin Queue), a dedicated MSI-X
+interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
+data placement.
+.Pp
+The
+.Nm
+driver supports industry standard TCP/IP offload features such
+as checksum offload and TCP transmit segmentation offload (TSO).
+Receive-side scaling (RSS) is supported for multi-core scaling.
+.Pp
+The
+.Nm
+driver and its corresponding devices implement health
+monitoring mechanisms such as watchdog, enabling the device and driver
+to recover in a manner transparent to the application, as well as
+debug logs.
+.Pp
+Some of the ENA devices support a working mode called Low-latency
+Queue (LLQ), which saves several more microseconds. This feature will
+be implemented for driver in future releases.
+.Sh HARDWARE
+Supported PCI vendor ID/device IDs:
+.Pp
+.Bl -bullet -compact
+.It
+1d0f:0ec2 - ENA PF
+.It
+1d0f:1ec2 - ENA PF with LLQ support
+.It
+1d0f:ec20 - ENA VF
+.It
+1d0f:ec21 - ENA VF with LLQ support
+.El
+.Sh DIAGNOSTICS
+.Ss Device initialization phase:
+.Bl -diag
+.It ena%d: failed to init mmio read less
+.Pp
+Error occured during initialization of the mmio register read request.
+.It ena%d: Can not reset device
+.Pp
+Device could not be reset; device may not be responding or is already
+during reset.
+.It ena%d: device version is too low
+.Pp
+Version of the controller is too low and it is not supported by the driver.
+.It ena%d: Invalid dma width value %d
+.Pp
+The controller is able to request dma transcation width. Device stopped
+responding or it demanded invalid value.
+.It ena%d: Can not initialize ena admin queue with device
+.Pp
+Initialization of the Admin Queue failed; device may not be responding or there
+was a problem with initialization of the resources.
+.It ena%d: Cannot get attribute for ena device rc: %d
+.Pp
+Failed to get attributes of the device from the controller.
+.It ena%d: Cannot configure aenq groups rc: %d
+.Pp
+Errors occured when trying to configure AENQ groups.
+.El
+.Ss Driver initialisation/shutdown phase:
+.Bl -diag
+.It ena%d: PCI resource allocation failed!
+.It ena%d: allocating ena_dev failed
+.It ena%d: failed to pmap registers bar
+.It ena%d: Error while setting up bufring
+.It ena%d: Error with initialization of IO rings
+.It ena%d: can not allocate ifnet structure
+.It ena%d: Error with network interface setup
+.It ena%d: Failed to enable and set the admin interrupts
+.It ena%d: Failed to allocate %d, vectors %d
+.It ena%d: Failed to enable MSIX, vectors %d rc %d
+.It ena%d: Error with MSI-X enablement
+.It ena%d: could not allocate irq vector: %d
+.It ena%d: Unable to allocate bus resource: registers
+.Pp
+Resource allocation failed when initializing the device; driver will not
+be attached.
+.It ena%d: ENA device init failed (err: %d)
+.Pp
+Device initialization failed; driver will not be attached.
+.It ena%d: could not activate irq vector: %d
+.Pp
+Error occured when trying to activate interrupt vectors for Admin Queue.
+.It ena%d: failed to register interrupt handler for irq %ju: %d
+.Pp
+Error occured when trying to register Admin Queue interrupt handler.
+.It ena%d: Cannot setup mgmnt queue intr
+.Pp
+Error occured during configuration of the Admin Queue interrupts.
+.It ena%d: Enable MSI-X failed
+.Pp
+Configuration of the MSI-X for Admin Queue failed; there could be lack
+of resources or interrupts could not have been configured; driver will
+not be attached.
+.It ena%d: VLAN is in use, detach first
+.Pp
+VLANs are being used when trying to detach the driver; VLANs should be detached
+first and then detach routine should be called again.
+.It ena%d: Unmapped RX DMA tag associations
+.It ena%d: Unmapped TX DMA tag associations
+.Pp
+Error occured when trying to destroy RX/TX DMA tag.
+.It ena%d: Cannot init RSS
+.It ena%d: Cannot fill indirect table
+.It ena%d: Cannot fill indirect table
+.It ena%d: Cannot fill hash function
+.It ena%d: Cannot fill hash control
+.It ena%d: WARNING: RSS was not properly initialized, it will affect bandwidth
+.Pp
+Error occured during initialization of one of RSS resources; device is still
+going to work but it will affect performance because all RX packets will be
+passed to queue 0 and there will be no hash information.
+.It ena%d: failed to tear down irq: %d
+.It ena%d: dev has no parent while releasing res for irq: %d
+Release of the interrupts failed.
+.El
+.Ss Additional diagnostic:
+.Bl -diag
+.It ena%d: Cannot get attribute for ena device
+.Pp
+This message appears when trying to change MTU and driver is unable to get
+attributes from the device.
+.It ena%d: Invalid MTU setting. new_mtu: %d
+.Pp
+Requested MTU value is not supported and will not be set.
+.It ena%d: keep alive watchdog timeout
+.Pp
+Device stopped responding and will be reset.
+.It ena%d: Found a Tx that wasn't completed on time, qid %d, index %d.
+.Pp
+Packet was pushed to the NIC but not sent within given time limit; it may
+be caused by hang of the IO queue.
+.It ena%d: The number of lost tx completion is aboce the threshold (%d > %d). Reset the device
+.Pp
+If too many Tx wasn't completed on time the device is going to be reset; it may
+be caused by hanged queue or device.
+.It ena%d: trigger reset is on
+.Pp
+Device will be reset; reset is triggered either by watchdog or if too many TX
+packets were not completed on time.
+.It ena%d: invalid value recvd
+.Pp
+Link status received from the device in the AENQ handler is invalid.
+.It ena%d: Allocation for Tx Queue %u failed
+.It ena%d: Allocation for Rx Queue %u failed
+.It ena%d: Unable to create Rx DMA map for buffer %d
+.It ena%d: Failed to create io TX queue #%d rc: %d
+.It ena%d: Failed to get TX queue handlers. TX queue num %d rc: %d
+.It ena%d: Failed to create io RX queue[%d] rc: %d
+.It ena%d: Failed to get RX queue handlers. RX queue num %d rc: %d
+.It ena%d: failed to request irq
+.It ena%d: could not allocate irq vector: %d
+.It ena%d: failed to register interrupt handler for irq %ju: %d
+.Pp
+IO resources initialization failed. Interface will not be brought up.
+.It ena%d: LRO[%d] Initialization failed!
+.Pp
+Initialization of the LRO for the RX ring failed.
+.It ena%d: failed to alloc buffer for rx queue
+.It ena%d: failed to add buffer for rx queue %d
+.It ena%d: refilled rx queue %d with %d pages only
+.Pp
+Allocation of resources used on RX path failed; if happened during
+initialization of the IO queue, the interface will not be brought up.
+.It ena%d: ioctl promisc/allmulti
+.Pp
+IOCTL request for the device to work in promiscuous/allmulti mode; see
+.Xr ifconfig 8
+for more details.
+.It ena%d: too many fragments. Last fragment: %d!
+.Pp
+Packet with unsupported number of segments was queued for sending to the
+device; packet will be dropped.
+.Sh SUPPORT
+If an issue is identified with the released source code with a supported adapter
+email the specific information related to the issue to
+.Aq Mt mk@semihalf.com
+and
+.Aq Mt mw@semihalf.com .
+.Sh SEE ALSO
+.Xr vlan 4 ,
+.Xr ifconfig 8
+.Sh AUTHORS
+The
+.Nm
+driver was written by
+.An Semihalf.
diff --git a/sys/conf/files b/sys/conf/files
index b24a187..e4da191 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -1547,6 +1547,12 @@ dev/e1000/e1000_mbx.c		optional em | igb \
 dev/e1000/e1000_osdep.c		optional em | igb \
 	compile-with "${NORMAL_C} -I$S/dev/e1000"
 dev/et/if_et.c			optional et
+dev/ena/ena.c			optional ena \
+	compile-with "${NORMAL_C} -I$S/contrib"
+dev/ena/ena_sysctl.c 		optional ena \
+	compile-with "${NORMAL_C} -I$S/contrib"
+contrib/ena-com/ena_com.c	optional ena
+contrib/ena-com/ena_eth_com.c	optional ena
 dev/en/if_en_pci.c		optional en pci
 dev/en/midway.c			optional en
 dev/ep/if_ep.c			optional ep
diff --git a/sys/contrib/ena-com/ena_admin_defs.h b/sys/contrib/ena-com/ena_admin_defs.h
new file mode 100644
index 0000000..1d845c0
--- /dev/null
+++ b/sys/contrib/ena-com/ena_admin_defs.h
@@ -0,0 +1,1412 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder 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.
+ */
+
+#ifndef _ENA_ADMIN_H_
+#define _ENA_ADMIN_H_
+
+enum ena_admin_aq_opcode {
+	ENA_ADMIN_CREATE_SQ	= 1,
+
+	ENA_ADMIN_DESTROY_SQ	= 2,
+
+	ENA_ADMIN_CREATE_CQ	= 3,
+
+	ENA_ADMIN_DESTROY_CQ	= 4,
+
+	ENA_ADMIN_GET_FEATURE	= 8,
+
+	ENA_ADMIN_SET_FEATURE	= 9,
+
+	ENA_ADMIN_GET_STATS	= 11,
+};
+
+enum ena_admin_aq_completion_status {
+	ENA_ADMIN_SUCCESS			= 0,
+
+	ENA_ADMIN_RESOURCE_ALLOCATION_FAILURE	= 1,
+
+	ENA_ADMIN_BAD_OPCODE			= 2,
+
+	ENA_ADMIN_UNSUPPORTED_OPCODE		= 3,
+
+	ENA_ADMIN_MALFORMED_REQUEST		= 4,
+
+	/* Additional status is provided in ACQ entry extended_status */
+	ENA_ADMIN_ILLEGAL_PARAMETER		= 5,
+
+	ENA_ADMIN_UNKNOWN_ERROR			= 6,
+};
+
+enum ena_admin_aq_feature_id {
+	ENA_ADMIN_DEVICE_ATTRIBUTES		= 1,
+
+	ENA_ADMIN_MAX_QUEUES_NUM		= 2,
+
+	ENA_ADMIN_HW_HINTS			= 3,
+
+	ENA_ADMIN_RSS_HASH_FUNCTION		= 10,
+
+	ENA_ADMIN_STATELESS_OFFLOAD_CONFIG	= 11,
+
+	ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG	= 12,
+
+	ENA_ADMIN_MTU				= 14,
+
+	ENA_ADMIN_RSS_HASH_INPUT		= 18,
+
+	ENA_ADMIN_INTERRUPT_MODERATION		= 20,
+
+	ENA_ADMIN_AENQ_CONFIG			= 26,
+
+	ENA_ADMIN_LINK_CONFIG			= 27,
+
+	ENA_ADMIN_HOST_ATTR_CONFIG		= 28,
+
+	ENA_ADMIN_FEATURES_OPCODE_NUM		= 32,
+};
+
+enum ena_admin_placement_policy_type {
+	/* descriptors and headers are in host memory */
+	ENA_ADMIN_PLACEMENT_POLICY_HOST	= 1,
+
+	/* descriptors and headers are in device memory (a.k.a Low Latency
+	 * Queue)
+	 */
+	ENA_ADMIN_PLACEMENT_POLICY_DEV	= 3,
+};
+
+enum ena_admin_link_types {
+	ENA_ADMIN_LINK_SPEED_1G		= 0x1,
+
+	ENA_ADMIN_LINK_SPEED_2_HALF_G	= 0x2,
+
+	ENA_ADMIN_LINK_SPEED_5G		= 0x4,
+
+	ENA_ADMIN_LINK_SPEED_10G	= 0x8,
+
+	ENA_ADMIN_LINK_SPEED_25G	= 0x10,
+
+	ENA_ADMIN_LINK_SPEED_40G	= 0x20,
+
+	ENA_ADMIN_LINK_SPEED_50G	= 0x40,
+
+	ENA_ADMIN_LINK_SPEED_100G	= 0x80,
+
+	ENA_ADMIN_LINK_SPEED_200G	= 0x100,
+
+	ENA_ADMIN_LINK_SPEED_400G	= 0x200,
+};
+
+enum ena_admin_completion_policy_type {
+	/* completion queue entry for each sq descriptor */
+	ENA_ADMIN_COMPLETION_POLICY_DESC		= 0,
+
+	/* completion queue entry upon request in sq descriptor */
+	ENA_ADMIN_COMPLETION_POLICY_DESC_ON_DEMAND	= 1,
+
+	/* current queue head pointer is updated in OS memory upon sq
+	 * descriptor request
+	 */
+	ENA_ADMIN_COMPLETION_POLICY_HEAD_ON_DEMAND	= 2,
+
+	/* current queue head pointer is updated in OS memory for each sq
+	 * descriptor
+	 */
+	ENA_ADMIN_COMPLETION_POLICY_HEAD		= 3,
+};
+
+/* basic stats return ena_admin_basic_stats while extanded stats return a
+ * buffer (string format) with additional statistics per queue and per
+ * device id
+ */
+enum ena_admin_get_stats_type {
+	ENA_ADMIN_GET_STATS_TYPE_BASIC		= 0,
+
+	ENA_ADMIN_GET_STATS_TYPE_EXTENDED	= 1,
+};
+
+enum ena_admin_get_stats_scope {
+	ENA_ADMIN_SPECIFIC_QUEUE	= 0,
+
+	ENA_ADMIN_ETH_TRAFFIC		= 1,
+};
+
+struct ena_admin_aq_common_desc {
+	/* 11:0 : command_id
+	 * 15:12 : reserved12
+	 */
+	uint16_t command_id;
+
+	/* as appears in ena_admin_aq_opcode */
+	uint8_t opcode;
+
+	/* 0 : phase
+	 * 1 : ctrl_data - control buffer address valid
+	 * 2 : ctrl_data_indirect - control buffer address
+	 *    points to list of pages with addresses of control
+	 *    buffers
+	 * 7:3 : reserved3
+	 */
+	uint8_t flags;
+};
+
+/* used in ena_admin_aq_entry. Can point directly to control data, or to a
+ * page list chunk. Used also at the end of indirect mode page list chunks,
+ * for chaining.
+ */
+struct ena_admin_ctrl_buff_info {
+	uint32_t length;
+
+	struct ena_common_mem_addr address;
+};
+
+struct ena_admin_sq {
+	uint16_t sq_idx;
+
+	/* 4:0 : reserved
+	 * 7:5 : sq_direction - 0x1 - Tx; 0x2 - Rx
+	 */
+	uint8_t sq_identity;
+
+	uint8_t reserved1;
+};
+
+struct ena_admin_aq_entry {
+	struct ena_admin_aq_common_desc aq_common_descriptor;
+
+	union {
+		uint32_t inline_data_w1[3];
+
+		struct ena_admin_ctrl_buff_info control_buffer;
+	} u;
+
+	uint32_t inline_data_w4[12];
+};
+
+struct ena_admin_acq_common_desc {
+	/* command identifier to associate it with the aq descriptor
+	 * 11:0 : command_id
+	 * 15:12 : reserved12
+	 */
+	uint16_t command;
+
+	uint8_t status;
+
+	/* 0 : phase
+	 * 7:1 : reserved1
+	 */
+	uint8_t flags;
+
+	uint16_t extended_status;
+
+	/* serves as a hint what AQ entries can be revoked */
+	uint16_t sq_head_indx;
+};
+
+struct ena_admin_acq_entry {
+	struct ena_admin_acq_common_desc acq_common_descriptor;
+
+	uint32_t response_specific_data[14];
+};
+
+struct ena_admin_aq_create_sq_cmd {
+	struct ena_admin_aq_common_desc aq_common_descriptor;
+
+	/* 4:0 : reserved0_w1
+	 * 7:5 : sq_direction - 0x1 - Tx, 0x2 - Rx
+	 */
+	uint8_t sq_identity;
+
+	uint8_t reserved8_w1;
+
+	/* 3:0 : placement_policy - Describing where the SQ
+	 *    descriptor ring and the SQ packet headers reside:
+	 *    0x1 - descriptors and headers are in OS memory,
+	 *    0x3 - descriptors and headers in device memory
+	 *    (a.k.a Low Latency Queue)
+	 * 6:4 : completion_policy - Describing what policy
+	 *    to use for generation completion entry (cqe) in
+	 *    the CQ associated with this SQ: 0x0 - cqe for each
+	 *    sq descriptor, 0x1 - cqe upon request in sq
+	 *    descriptor, 0x2 - current queue head pointer is
+	 *    updated in OS memory upon sq descriptor request
+	 *    0x3 - current queue head pointer is updated in OS
+	 *    memory for each sq descriptor
+	 * 7 : reserved15_w1
+	 */
+	uint8_t sq_caps_2;
+
+	/* 0 : is_physically_contiguous - Described if the
+	 *    queue ring memory is allocated in physical
+	 *    contiguous pages or split.
+	 * 7:1 : reserved17_w1
+	 */
+	uint8_t sq_caps_3;
+
+	/* associated completion queue id. This CQ must be created prior to
+	 *    SQ creation
+	 */
+	uint16_t cq_idx;
+
+	/* submission queue depth in entries */
+	uint16_t sq_depth;
+
+	/* SQ physical base address in OS memory. This field should not be
+	 * used for Low Latency queues. Has to be page aligned.
+	 */
+	struct ena_common_mem_addr sq_ba;
+
+	/* specifies queue head writeback location in OS memory. Valid if
+	 * completion_policy is set to completion_policy_head_on_demand or
+	 * completion_policy_head. Has to be cache aligned
+	 */
+	struct ena_common_mem_addr sq_head_writeback;
+
+	uint32_t reserved0_w7;
+
+	uint32_t reserved0_w8;
+};
+
+enum ena_admin_sq_direction {
+	ENA_ADMIN_SQ_DIRECTION_TX	= 1,
+
+	ENA_ADMIN_SQ_DIRECTION_RX	= 2,
+};
+
+struct ena_admin_acq_create_sq_resp_desc {
+	struct ena_admin_acq_common_desc acq_common_desc;
+
+	uint16_t sq_idx;
+
+	uint16_t reserved;
+
+	/* queue doorbell address as an offset to PCIe MMIO REG BAR */
+	uint32_t sq_doorbell_offset;
+
+	/* low latency queue ring base address as an offset to PCIe MMIO
+	 * LLQ_MEM BAR
+	 */
+	uint32_t llq_descriptors_offset;
+
+	/* low latency queue headers' memory as an offset to PCIe MMIO
+	 * LLQ_MEM BAR
+	 */
+	uint32_t llq_headers_offset;
+};
+
+struct ena_admin_aq_destroy_sq_cmd {
+	struct ena_admin_aq_common_desc aq_common_descriptor;
+
+	struct ena_admin_sq sq;
+};
+
+struct ena_admin_acq_destroy_sq_resp_desc {
+	struct ena_admin_acq_common_desc acq_common_desc;
+};
+
+struct ena_admin_aq_create_cq_cmd {
+	struct ena_admin_aq_common_desc aq_common_descriptor;
+
+	/* 4:0 : reserved5
+	 * 5 : interrupt_mode_enabled - if set, cq operates
+	 *    in interrupt mode, otherwise - polling
+	 * 7:6 : reserved6
+	 */
+	uint8_t cq_caps_1;
+
+	/* 4:0 : cq_entry_size_words - size of CQ entry in
+	 *    32-bit words, valid values: 4, 8.
+	 * 7:5 : reserved7
+	 */
+	uint8_t cq_caps_2;
+
+	/* completion queue depth in # of entries. must be power of 2 */
+	uint16_t cq_depth;
+
+	/* msix vector assigned to this cq */
+	uint32_t msix_vector;
+
+	/* cq physical base address in OS memory. CQ must be physically
+	 * contiguous
+	 */
+	struct ena_common_mem_addr cq_ba;
+};
+
+struct ena_admin_acq_create_cq_resp_desc {
+	struct ena_admin_acq_common_desc acq_common_desc;
+
+	uint16_t cq_idx;
+
+	/* actual cq depth in number of entries */
+	uint16_t cq_actual_depth;
+
+	uint32_t numa_node_register_offset;
+
+	uint32_t cq_head_db_register_offset;
+
+	uint32_t cq_interrupt_unmask_register_offset;
+};
+
+struct ena_admin_aq_destroy_cq_cmd {
+	struct ena_admin_aq_common_desc aq_common_descriptor;
+
+	uint16_t cq_idx;
+
+	uint16_t reserved1;
+};
+
+struct ena_admin_acq_destroy_cq_resp_desc {
+	struct ena_admin_acq_common_desc acq_common_desc;
+};
+
+/* ENA AQ Get Statistics command. Extended statistics are placed in control
+ * buffer pointed by AQ entry
+ */
+struct ena_admin_aq_get_stats_cmd {
+	struct ena_admin_aq_common_desc aq_common_descriptor;
+
+	union {
+		/* command specific inline data */
+		uint32_t inline_data_w1[3];
+
+		struct ena_admin_ctrl_buff_info control_buffer;
+	} u;
+
+	/* stats type as defined in enum ena_admin_get_stats_type */
+	uint8_t type;
+
+	/* stats scope defined in enum ena_admin_get_stats_scope */
+	uint8_t scope;
+
+	uint16_t reserved3;
+
+	/* queue id. used when scope is specific_queue */
+	uint16_t queue_idx;
+
+	/* device id, value 0xFFFF means mine. only privileged device can get
+	 *    stats of other device
+	 */
+	uint16_t device_id;
+};
+
+/* Basic Statistics Command. */
+struct ena_admin_basic_stats {
+	uint32_t tx_bytes_low;
+
+	uint32_t tx_bytes_high;
+
+	uint32_t tx_pkts_low;
+
+	uint32_t tx_pkts_high;
+
+	uint32_t rx_bytes_low;
+
+	uint32_t rx_bytes_high;
+
+	uint32_t rx_pkts_low;
+
+	uint32_t rx_pkts_high;
+
+	uint32_t rx_drops_low;
+
+	uint32_t rx_drops_high;
+};
+
+struct ena_admin_acq_get_stats_resp {
+	struct ena_admin_acq_common_desc acq_common_desc;
+
+	struct ena_admin_basic_stats basic_stats;
+};
+
+struct ena_admin_get_set_feature_common_desc {
+	/* 1:0 : select - 0x1 - current value; 0x3 - default
+	 *    value
+	 * 7:3 : reserved3
+	 */
+	uint8_t flags;
+
+	/* as appears in ena_admin_aq_feature_id */
+	uint8_t feature_id;
+
+	uint16_t reserved16;
+};
+
+struct ena_admin_device_attr_feature_desc {
+	uint32_t impl_id;
+
+	uint32_t device_version;
+
+	/* bitmap of ena_admin_aq_feature_id */
+	uint32_t supported_features;
+
+	uint32_t reserved3;
+
+	/* Indicates how many bits are used physical address access. */
+	uint32_t phys_addr_width;
+
+	/* Indicates how many bits are used virtual address access. */
+	uint32_t virt_addr_width;
+
+	/* unicast MAC address (in Network byte order) */
+	uint8_t mac_addr[6];
+
+	uint8_t reserved7[2];
+
+	uint32_t max_mtu;
+};
+
+struct ena_admin_queue_feature_desc {
+	/* including LLQs */
+	uint32_t max_sq_num;
+
+	uint32_t max_sq_depth;
+
+	uint32_t max_cq_num;
+
+	uint32_t max_cq_depth;
+
+	uint32_t max_llq_num;
+
+	uint32_t max_llq_depth;
+
+	uint32_t max_header_size;
+
+	/* Maximum Descriptors number, including meta descriptor, allowed for
+	 *    a single Tx packet
+	 */
+	uint16_t max_packet_tx_descs;
+
+	/* Maximum Descriptors number allowed for a single Rx packet */
+	uint16_t max_packet_rx_descs;
+};
+
+struct ena_admin_set_feature_mtu_desc {
+	/* exclude L2 */
+	uint32_t mtu;
+};
+
+struct ena_admin_set_feature_host_attr_desc {
+	/* host OS info base address in OS memory. host info is 4KB of
+	 * physically contiguous
+	 */
+	struct ena_common_mem_addr os_info_ba;
+
+	/* host debug area base address in OS memory. debug area must be
+	 * physically contiguous
+	 */
+	struct ena_common_mem_addr debug_ba;
+
+	/* debug area size */
+	uint32_t debug_area_size;
+};
+
+struct ena_admin_feature_intr_moder_desc {
+	/* interrupt delay granularity in usec */
+	uint16_t intr_delay_resolution;
+
+	uint16_t reserved;
+};
+
+struct ena_admin_get_feature_link_desc {
+	/* Link speed in Mb */
+	uint32_t speed;
+
+	/* bit field of enum ena_admin_link types */
+	uint32_t supported;
+
+	/* 0 : autoneg
+	 * 1 : duplex - Full Duplex
+	 * 31:2 : reserved2
+	 */
+	uint32_t flags;
+};
+
+struct ena_admin_feature_aenq_desc {
+	/* bitmask for AENQ groups the device can report */
+	uint32_t supported_groups;
+
+	/* bitmask for AENQ groups to report */
+	uint32_t enabled_groups;
+};
+
+struct ena_admin_feature_offload_desc {
+	/* 0 : TX_L3_csum_ipv4
+	 * 1 : TX_L4_ipv4_csum_part - The checksum field
+	 *    should be initialized with pseudo header checksum
+	 * 2 : TX_L4_ipv4_csum_full
+	 * 3 : TX_L4_ipv6_csum_part - The checksum field
+	 *    should be initialized with pseudo header checksum
+	 * 4 : TX_L4_ipv6_csum_full
+	 * 5 : tso_ipv4
+	 * 6 : tso_ipv6
+	 * 7 : tso_ecn
+	 */
+	uint32_t tx;
+
+	/* Receive side supported stateless offload
+	 * 0 : RX_L3_csum_ipv4 - IPv4 checksum
+	 * 1 : RX_L4_ipv4_csum - TCP/UDP/IPv4 checksum
+	 * 2 : RX_L4_ipv6_csum - TCP/UDP/IPv6 checksum
+	 * 3 : RX_hash - Hash calculation
+	 */
+	uint32_t rx_supported;
+
+	uint32_t rx_enabled;
+};
+
+enum ena_admin_hash_functions {
+	ENA_ADMIN_TOEPLITZ	= 1,
+
+	ENA_ADMIN_CRC32		= 2,
+};
+
+struct ena_admin_feature_rss_flow_hash_control {
+	uint32_t keys_num;
+
+	uint32_t reserved;
+
+	uint32_t key[10];
+};
+
+struct ena_admin_feature_rss_flow_hash_function {
+	/* 7:0 : funcs - bitmask of ena_admin_hash_functions */
+	uint32_t supported_func;
+
+	/* 7:0 : selected_func - bitmask of
+	 *    ena_admin_hash_functions
+	 */
+	uint32_t selected_func;
+
+	/* initial value */
+	uint32_t init_val;
+};
+
+/* RSS flow hash protocols */
+enum ena_admin_flow_hash_proto {
+	ENA_ADMIN_RSS_TCP4	= 0,
+
+	ENA_ADMIN_RSS_UDP4	= 1,
+
+	ENA_ADMIN_RSS_TCP6	= 2,
+
+	ENA_ADMIN_RSS_UDP6	= 3,
+
+	ENA_ADMIN_RSS_IP4	= 4,
+
+	ENA_ADMIN_RSS_IP6	= 5,
+
+	ENA_ADMIN_RSS_IP4_FRAG	= 6,
+
+	ENA_ADMIN_RSS_NOT_IP	= 7,
+
+	/* TCPv6 with extension header */
+	ENA_ADMIN_RSS_TCP6_EX	= 8,
+
+	/* IPv6 with extension header */
+	ENA_ADMIN_RSS_IP6_EX	= 9,
+
+	ENA_ADMIN_RSS_PROTO_NUM	= 16,
+};
+
+/* RSS flow hash fields */
+enum ena_admin_flow_hash_fields {
+	/* Ethernet Dest Addr */
+	ENA_ADMIN_RSS_L2_DA	= BIT(0),
+
+	/* Ethernet Src Addr */
+	ENA_ADMIN_RSS_L2_SA	= BIT(1),
+
+	/* ipv4/6 Dest Addr */
+	ENA_ADMIN_RSS_L3_DA	= BIT(2),
+
+	/* ipv4/6 Src Addr */
+	ENA_ADMIN_RSS_L3_SA	= BIT(3),
+
+	/* tcp/udp Dest Port */
+	ENA_ADMIN_RSS_L4_DP	= BIT(4),
+
+	/* tcp/udp Src Port */
+	ENA_ADMIN_RSS_L4_SP	= BIT(5),
+};
+
+struct ena_admin_proto_input {
+	/* flow hash fields (bitwise according to ena_admin_flow_hash_fields) */
+	uint16_t fields;
+
+	uint16_t reserved2;
+};
+
+struct ena_admin_feature_rss_hash_control {
+	struct ena_admin_proto_input supported_fields[ENA_ADMIN_RSS_PROTO_NUM];
+
+	struct ena_admin_proto_input selected_fields[ENA_ADMIN_RSS_PROTO_NUM];
+
+	struct ena_admin_proto_input reserved2[ENA_ADMIN_RSS_PROTO_NUM];
+
+	struct ena_admin_proto_input reserved3[ENA_ADMIN_RSS_PROTO_NUM];
+};
+
+struct ena_admin_feature_rss_flow_hash_input {
+	/* supported hash input sorting
+	 * 1 : L3_sort - support swap L3 addresses if DA is
+	 *    smaller than SA
+	 * 2 : L4_sort - support swap L4 ports if DP smaller
+	 *    SP
+	 */
+	uint16_t supported_input_sort;
+
+	/* enabled hash input sorting
+	 * 1 : enable_L3_sort - enable swap L3 addresses if
+	 *    DA smaller than SA
+	 * 2 : enable_L4_sort - enable swap L4 ports if DP
+	 *    smaller than SP
+	 */
+	uint16_t enabled_input_sort;
+};
+
+enum ena_admin_os_type {
+	ENA_ADMIN_OS_LINUX	= 1,
+
+	ENA_ADMIN_OS_WIN	= 2,
+
+	ENA_ADMIN_OS_DPDK	= 3,
+
+	ENA_ADMIN_OS_FREEBSD	= 4,
+
+	ENA_ADMIN_OS_IPXE	= 5,
+};
+
+struct ena_admin_host_info {
+	/* defined in enum ena_admin_os_type */
+	uint32_t os_type;
+
+	/* os distribution string format */
+	uint8_t os_dist_str[128];
+
+	/* OS distribution numeric format */
+	uint32_t os_dist;
+
+	/* kernel version string format */
+	uint8_t kernel_ver_str[32];
+
+	/* Kernel version numeric format */
+	uint32_t kernel_ver;
+
+	/* 7:0 : major
+	 * 15:8 : minor
+	 * 23:16 : sub_minor
+	 */
+	uint32_t driver_version;
+
+	/* features bitmap */
+	uint32_t supported_network_features[4];
+};
+
+struct ena_admin_rss_ind_table_entry {
+	uint16_t cq_idx;
+
+	uint16_t reserved;
+};
+
+struct ena_admin_feature_rss_ind_table {
+	/* min supported table size (2^min_size) */
+	uint16_t min_size;
+
+	/* max supported table size (2^max_size) */
+	uint16_t max_size;
+
+	/* table size (2^size) */
+	uint16_t size;
+
+	uint16_t reserved;
+
+	/* index of the inline entry. 0xFFFFFFFF means invalid */
+	uint32_t inline_index;
+
+	/* used for updating single entry, ignored when setting the entire
+	 * table through the control buffer.
+	 */
+	struct ena_admin_rss_ind_table_entry inline_entry;
+};
+
+/* When hint value is 0, driver should use it's own predefined value */
+struct ena_admin_ena_hw_hints {
+	/* value in ms */
+	uint16_t mmio_read_timeout;
+
+	/* value in ms */
+	uint16_t driver_watchdog_timeout;
+
+	/* Per packet tx completion timeout. value in ms */
+	uint16_t missing_tx_completion_timeout;
+
+	uint16_t missed_tx_completion_count_threshold_to_reset;
+
+	/* value in ms */
+	uint16_t admin_completion_tx_timeout;
+
+	uint16_t netdev_wd_timeout;
+
+	uint16_t max_tx_sgl_size;
+
+	uint16_t max_rx_sgl_size;
+
+	uint16_t reserved[8];
+};
+
+struct ena_admin_get_feat_cmd {
+	struct ena_admin_aq_common_desc aq_common_descriptor;
+
+	struct ena_admin_ctrl_buff_info control_buffer;
+
+	struct ena_admin_get_set_feature_common_desc feat_common;
+
+	uint32_t raw[11];
+};
+
+struct ena_admin_get_feat_resp {
+	struct ena_admin_acq_common_desc acq_common_desc;
+
+	union {
+		uint32_t raw[14];
+
+		struct ena_admin_device_attr_feature_desc dev_attr;
+
+		struct ena_admin_queue_feature_desc max_queue;
+
+		struct ena_admin_feature_aenq_desc aenq;
+
+		struct ena_admin_get_feature_link_desc link;
+
+		struct ena_admin_feature_offload_desc offload;
+
+		struct ena_admin_feature_rss_flow_hash_function flow_hash_func;
+
+		struct ena_admin_feature_rss_flow_hash_input flow_hash_input;
+
+		struct ena_admin_feature_rss_ind_table ind_table;
+
+		struct ena_admin_feature_intr_moder_desc intr_moderation;
+
+		struct ena_admin_ena_hw_hints hw_hints;
+	} u;
+};
+
+struct ena_admin_set_feat_cmd {
+	struct ena_admin_aq_common_desc aq_common_descriptor;
+
+	struct ena_admin_ctrl_buff_info control_buffer;
+
+	struct ena_admin_get_set_feature_common_desc feat_common;
+
+	union {
+		uint32_t raw[11];
+
+		/* mtu size */
+		struct ena_admin_set_feature_mtu_desc mtu;
+
+		/* host attributes */
+		struct ena_admin_set_feature_host_attr_desc host_attr;
+
+		/* AENQ configuration */
+		struct ena_admin_feature_aenq_desc aenq;
+
+		/* rss flow hash function */
+		struct ena_admin_feature_rss_flow_hash_function flow_hash_func;
+
+		/* rss flow hash input */
+		struct ena_admin_feature_rss_flow_hash_input flow_hash_input;
+
+		/* rss indirection table */
+		struct ena_admin_feature_rss_ind_table ind_table;
+	} u;
+};
+
+struct ena_admin_set_feat_resp {
+	struct ena_admin_acq_common_desc acq_common_desc;
+
+	union {
+		uint32_t raw[14];
+	} u;
+};
+
+struct ena_admin_aenq_common_desc {
+	uint16_t group;
+
+	uint16_t syndrom;
+
+	/* 0 : phase */
+	uint8_t flags;
+
+	uint8_t reserved1[3];
+
+	uint32_t timestamp_low;
+
+	uint32_t timestamp_high;
+};
+
+/* asynchronous event notification groups */
+enum ena_admin_aenq_group {
+	ENA_ADMIN_LINK_CHANGE		= 0,
+
+	ENA_ADMIN_FATAL_ERROR		= 1,
+
+	ENA_ADMIN_WARNING		= 2,
+
+	ENA_ADMIN_NOTIFICATION		= 3,
+
+	ENA_ADMIN_KEEP_ALIVE		= 4,
+
+	ENA_ADMIN_AENQ_GROUPS_NUM	= 5,
+};
+
+enum ena_admin_aenq_notification_syndrom {
+	ENA_ADMIN_SUSPEND	= 0,
+
+	ENA_ADMIN_RESUME	= 1,
+
+	ENA_ADMIN_UPDATE_HINTS	= 2,
+};
+
+struct ena_admin_aenq_entry {
+	struct ena_admin_aenq_common_desc aenq_common_desc;
+
+	/* command specific inline data */
+	uint32_t inline_data_w4[12];
+};
+
+struct ena_admin_aenq_link_change_desc {
+	struct ena_admin_aenq_common_desc aenq_common_desc;
+
+	/* 0 : link_status */
+	uint32_t flags;
+};
+
+struct ena_admin_aenq_keep_alive_desc {
+	struct ena_admin_aenq_common_desc aenq_common_desc;
+
+	uint32_t rx_drops_low;
+
+	uint32_t rx_drops_high;
+};
+
+struct ena_admin_ena_mmio_req_read_less_resp {
+	uint16_t req_id;
+
+	uint16_t reg_off;
+
+	/* value is valid when poll is cleared */
+	uint32_t reg_val;
+};
+
+/* aq_common_desc */
+#define ENA_ADMIN_AQ_COMMON_DESC_COMMAND_ID_MASK GENMASK(11, 0)
+#define ENA_ADMIN_AQ_COMMON_DESC_PHASE_MASK BIT(0)
+#define ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_SHIFT 1
+#define ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_MASK BIT(1)
+#define ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_SHIFT 2
+#define ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK BIT(2)
+
+/* sq */
+#define ENA_ADMIN_SQ_SQ_DIRECTION_SHIFT 5
+#define ENA_ADMIN_SQ_SQ_DIRECTION_MASK GENMASK(7, 5)
+
+/* acq_common_desc */
+#define ENA_ADMIN_ACQ_COMMON_DESC_COMMAND_ID_MASK GENMASK(11, 0)
+#define ENA_ADMIN_ACQ_COMMON_DESC_PHASE_MASK BIT(0)
+
+/* aq_create_sq_cmd */
+#define ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_SHIFT 5
+#define ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_MASK GENMASK(7, 5)
+#define ENA_ADMIN_AQ_CREATE_SQ_CMD_PLACEMENT_POLICY_MASK GENMASK(3, 0)
+#define ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_SHIFT 4
+#define ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_MASK GENMASK(6, 4)
+#define ENA_ADMIN_AQ_CREATE_SQ_CMD_IS_PHYSICALLY_CONTIGUOUS_MASK BIT(0)
+
+/* aq_create_cq_cmd */
+#define ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_SHIFT 5
+#define ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_MASK BIT(5)
+#define ENA_ADMIN_AQ_CREATE_CQ_CMD_CQ_ENTRY_SIZE_WORDS_MASK GENMASK(4, 0)
+
+/* get_set_feature_common_desc */
+#define ENA_ADMIN_GET_SET_FEATURE_COMMON_DESC_SELECT_MASK GENMASK(1, 0)
+
+/* get_feature_link_desc */
+#define ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK BIT(0)
+#define ENA_ADMIN_GET_FEATURE_LINK_DESC_DUPLEX_SHIFT 1
+#define ENA_ADMIN_GET_FEATURE_LINK_DESC_DUPLEX_MASK BIT(1)
+
+/* feature_offload_desc */
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK BIT(0)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_SHIFT 1
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK BIT(1)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_SHIFT 2
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK BIT(2)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_SHIFT 3
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK BIT(3)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_SHIFT 4
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK BIT(4)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_SHIFT 5
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK BIT(5)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_SHIFT 6
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_MASK BIT(6)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_ECN_SHIFT 7
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_ECN_MASK BIT(7)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK BIT(0)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_SHIFT 1
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK BIT(1)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_SHIFT 2
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK BIT(2)
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_HASH_SHIFT 3
+#define ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_HASH_MASK BIT(3)
+
+/* feature_rss_flow_hash_function */
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_FUNCTION_FUNCS_MASK GENMASK(7, 0)
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_FUNCTION_SELECTED_FUNC_MASK GENMASK(7, 0)
+
+/* feature_rss_flow_hash_input */
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_SHIFT 1
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_MASK BIT(1)
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_SHIFT 2
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_MASK BIT(2)
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L3_SORT_SHIFT 1
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L3_SORT_MASK BIT(1)
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L4_SORT_SHIFT 2
+#define ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L4_SORT_MASK BIT(2)
+
+/* host_info */
+#define ENA_ADMIN_HOST_INFO_MAJOR_MASK GENMASK(7, 0)
+#define ENA_ADMIN_HOST_INFO_MINOR_SHIFT 8
+#define ENA_ADMIN_HOST_INFO_MINOR_MASK GENMASK(15, 8)
+#define ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT 16
+#define ENA_ADMIN_HOST_INFO_SUB_MINOR_MASK GENMASK(23, 16)
+
+/* aenq_common_desc */
+#define ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK BIT(0)
+
+/* aenq_link_change_desc */
+#define ENA_ADMIN_AENQ_LINK_CHANGE_DESC_LINK_STATUS_MASK BIT(0)
+
+#if !defined(ENA_DEFS_LINUX_MAINLINE)
+static inline uint16_t get_ena_admin_aq_common_desc_command_id(const struct ena_admin_aq_common_desc *p)
+{
+	return p->command_id & ENA_ADMIN_AQ_COMMON_DESC_COMMAND_ID_MASK;
+}
+
+static inline void set_ena_admin_aq_common_desc_command_id(struct ena_admin_aq_common_desc *p, uint16_t val)
+{
+	p->command_id |= val & ENA_ADMIN_AQ_COMMON_DESC_COMMAND_ID_MASK;
+}
+
+static inline uint8_t get_ena_admin_aq_common_desc_phase(const struct ena_admin_aq_common_desc *p)
+{
+	return p->flags & ENA_ADMIN_AQ_COMMON_DESC_PHASE_MASK;
+}
+
+static inline void set_ena_admin_aq_common_desc_phase(struct ena_admin_aq_common_desc *p, uint8_t val)
+{
+	p->flags |= val & ENA_ADMIN_AQ_COMMON_DESC_PHASE_MASK;
+}
+
+static inline uint8_t get_ena_admin_aq_common_desc_ctrl_data(const struct ena_admin_aq_common_desc *p)
+{
+	return (p->flags & ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_MASK) >> ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_SHIFT;
+}
+
+static inline void set_ena_admin_aq_common_desc_ctrl_data(struct ena_admin_aq_common_desc *p, uint8_t val)
+{
+	p->flags |= (val << ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_SHIFT) & ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_MASK;
+}
+
+static inline uint8_t get_ena_admin_aq_common_desc_ctrl_data_indirect(const struct ena_admin_aq_common_desc *p)
+{
+	return (p->flags & ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK) >> ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_SHIFT;
+}
+
+static inline void set_ena_admin_aq_common_desc_ctrl_data_indirect(struct ena_admin_aq_common_desc *p, uint8_t val)
+{
+	p->flags |= (val << ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_SHIFT) & ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
+}
+
+static inline uint8_t get_ena_admin_sq_sq_direction(const struct ena_admin_sq *p)
+{
+	return (p->sq_identity & ENA_ADMIN_SQ_SQ_DIRECTION_MASK) >> ENA_ADMIN_SQ_SQ_DIRECTION_SHIFT;
+}
+
+static inline void set_ena_admin_sq_sq_direction(struct ena_admin_sq *p, uint8_t val)
+{
+	p->sq_identity |= (val << ENA_ADMIN_SQ_SQ_DIRECTION_SHIFT) & ENA_ADMIN_SQ_SQ_DIRECTION_MASK;
+}
+
+static inline uint16_t get_ena_admin_acq_common_desc_command_id(const struct ena_admin_acq_common_desc *p)
+{
+	return p->command & ENA_ADMIN_ACQ_COMMON_DESC_COMMAND_ID_MASK;
+}
+
+static inline void set_ena_admin_acq_common_desc_command_id(struct ena_admin_acq_common_desc *p, uint16_t val)
+{
+	p->command |= val & ENA_ADMIN_ACQ_COMMON_DESC_COMMAND_ID_MASK;
+}
+
+static inline uint8_t get_ena_admin_acq_common_desc_phase(const struct ena_admin_acq_common_desc *p)
+{
+	return p->flags & ENA_ADMIN_ACQ_COMMON_DESC_PHASE_MASK;
+}
+
+static inline void set_ena_admin_acq_common_desc_phase(struct ena_admin_acq_common_desc *p, uint8_t val)
+{
+	p->flags |= val & ENA_ADMIN_ACQ_COMMON_DESC_PHASE_MASK;
+}
+
+static inline uint8_t get_ena_admin_aq_create_sq_cmd_sq_direction(const struct ena_admin_aq_create_sq_cmd *p)
+{
+	return (p->sq_identity & ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_MASK) >> ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_SHIFT;
+}
+
+static inline void set_ena_admin_aq_create_sq_cmd_sq_direction(struct ena_admin_aq_create_sq_cmd *p, uint8_t val)
+{
+	p->sq_identity |= (val << ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_SHIFT) & ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_MASK;
+}
+
+static inline uint8_t get_ena_admin_aq_create_sq_cmd_placement_policy(const struct ena_admin_aq_create_sq_cmd *p)
+{
+	return p->sq_caps_2 & ENA_ADMIN_AQ_CREATE_SQ_CMD_PLACEMENT_POLICY_MASK;
+}
+
+static inline void set_ena_admin_aq_create_sq_cmd_placement_policy(struct ena_admin_aq_create_sq_cmd *p, uint8_t val)
+{
+	p->sq_caps_2 |= val & ENA_ADMIN_AQ_CREATE_SQ_CMD_PLACEMENT_POLICY_MASK;
+}
+
+static inline uint8_t get_ena_admin_aq_create_sq_cmd_completion_policy(const struct ena_admin_aq_create_sq_cmd *p)
+{
+	return (p->sq_caps_2 & ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_MASK) >> ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_SHIFT;
+}
+
+static inline void set_ena_admin_aq_create_sq_cmd_completion_policy(struct ena_admin_aq_create_sq_cmd *p, uint8_t val)
+{
+	p->sq_caps_2 |= (val << ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_SHIFT) & ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_MASK;
+}
+
+static inline uint8_t get_ena_admin_aq_create_sq_cmd_is_physically_contiguous(const struct ena_admin_aq_create_sq_cmd *p)
+{
+	return p->sq_caps_3 & ENA_ADMIN_AQ_CREATE_SQ_CMD_IS_PHYSICALLY_CONTIGUOUS_MASK;
+}
+
+static inline void set_ena_admin_aq_create_sq_cmd_is_physically_contiguous(struct ena_admin_aq_create_sq_cmd *p, uint8_t val)
+{
+	p->sq_caps_3 |= val & ENA_ADMIN_AQ_CREATE_SQ_CMD_IS_PHYSICALLY_CONTIGUOUS_MASK;
+}
+
+static inline uint8_t get_ena_admin_aq_create_cq_cmd_interrupt_mode_enabled(const struct ena_admin_aq_create_cq_cmd *p)
+{
+	return (p->cq_caps_1 & ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_MASK) >> ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_SHIFT;
+}
+
+static inline void set_ena_admin_aq_create_cq_cmd_interrupt_mode_enabled(struct ena_admin_aq_create_cq_cmd *p, uint8_t val)
+{
+	p->cq_caps_1 |= (val << ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_SHIFT) & ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_MASK;
+}
+
+static inline uint8_t get_ena_admin_aq_create_cq_cmd_cq_entry_size_words(const struct ena_admin_aq_create_cq_cmd *p)
+{
+	return p->cq_caps_2 & ENA_ADMIN_AQ_CREATE_CQ_CMD_CQ_ENTRY_SIZE_WORDS_MASK;
+}
+
+static inline void set_ena_admin_aq_create_cq_cmd_cq_entry_size_words(struct ena_admin_aq_create_cq_cmd *p, uint8_t val)
+{
+	p->cq_caps_2 |= val & ENA_ADMIN_AQ_CREATE_CQ_CMD_CQ_ENTRY_SIZE_WORDS_MASK;
+}
+
+static inline uint8_t get_ena_admin_get_set_feature_common_desc_select(const struct ena_admin_get_set_feature_common_desc *p)
+{
+	return p->flags & ENA_ADMIN_GET_SET_FEATURE_COMMON_DESC_SELECT_MASK;
+}
+
+static inline void set_ena_admin_get_set_feature_common_desc_select(struct ena_admin_get_set_feature_common_desc *p, uint8_t val)
+{
+	p->flags |= val & ENA_ADMIN_GET_SET_FEATURE_COMMON_DESC_SELECT_MASK;
+}
+
+static inline uint32_t get_ena_admin_get_feature_link_desc_autoneg(const struct ena_admin_get_feature_link_desc *p)
+{
+	return p->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK;
+}
+
+static inline void set_ena_admin_get_feature_link_desc_autoneg(struct ena_admin_get_feature_link_desc *p, uint32_t val)
+{
+	p->flags |= val & ENA_ADMIN_GET_FEATURE_LINK_DESC_AUTONEG_MASK;
+}
+
+static inline uint32_t get_ena_admin_get_feature_link_desc_duplex(const struct ena_admin_get_feature_link_desc *p)
+{
+	return (p->flags & ENA_ADMIN_GET_FEATURE_LINK_DESC_DUPLEX_MASK) >> ENA_ADMIN_GET_FEATURE_LINK_DESC_DUPLEX_SHIFT;
+}
+
+static inline void set_ena_admin_get_feature_link_desc_duplex(struct ena_admin_get_feature_link_desc *p, uint32_t val)
+{
+	p->flags |= (val << ENA_ADMIN_GET_FEATURE_LINK_DESC_DUPLEX_SHIFT) & ENA_ADMIN_GET_FEATURE_LINK_DESC_DUPLEX_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_TX_L3_csum_ipv4(const struct ena_admin_feature_offload_desc *p)
+{
+	return p->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK;
+}
+
+static inline void set_ena_admin_feature_offload_desc_TX_L3_csum_ipv4(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->tx |= val & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_TX_L4_ipv4_csum_part(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_TX_L4_ipv4_csum_part(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->tx |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_TX_L4_ipv4_csum_full(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_TX_L4_ipv4_csum_full(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->tx |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_TX_L4_ipv6_csum_part(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_TX_L4_ipv6_csum_part(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->tx |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_TX_L4_ipv6_csum_full(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_TX_L4_ipv6_csum_full(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->tx |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_tso_ipv4(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_tso_ipv4(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->tx |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_tso_ipv6(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_tso_ipv6(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->tx |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_tso_ecn(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_ECN_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_ECN_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_tso_ecn(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->tx |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_ECN_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_ECN_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_RX_L3_csum_ipv4(const struct ena_admin_feature_offload_desc *p)
+{
+	return p->rx_supported & ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK;
+}
+
+static inline void set_ena_admin_feature_offload_desc_RX_L3_csum_ipv4(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->rx_supported |= val & ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_RX_L4_ipv4_csum(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->rx_supported & ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_RX_L4_ipv4_csum(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->rx_supported |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_RX_L4_ipv6_csum(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->rx_supported & ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_RX_L4_ipv6_csum(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->rx_supported |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_offload_desc_RX_hash(const struct ena_admin_feature_offload_desc *p)
+{
+	return (p->rx_supported & ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_HASH_MASK) >> ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_HASH_SHIFT;
+}
+
+static inline void set_ena_admin_feature_offload_desc_RX_hash(struct ena_admin_feature_offload_desc *p, uint32_t val)
+{
+	p->rx_supported |= (val << ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_HASH_SHIFT) & ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_HASH_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_rss_flow_hash_function_funcs(const struct ena_admin_feature_rss_flow_hash_function *p)
+{
+	return p->supported_func & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_FUNCTION_FUNCS_MASK;
+}
+
+static inline void set_ena_admin_feature_rss_flow_hash_function_funcs(struct ena_admin_feature_rss_flow_hash_function *p, uint32_t val)
+{
+	p->supported_func |= val & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_FUNCTION_FUNCS_MASK;
+}
+
+static inline uint32_t get_ena_admin_feature_rss_flow_hash_function_selected_func(const struct ena_admin_feature_rss_flow_hash_function *p)
+{
+	return p->selected_func & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_FUNCTION_SELECTED_FUNC_MASK;
+}
+
+static inline void set_ena_admin_feature_rss_flow_hash_function_selected_func(struct ena_admin_feature_rss_flow_hash_function *p, uint32_t val)
+{
+	p->selected_func |= val & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_FUNCTION_SELECTED_FUNC_MASK;
+}
+
+static inline uint16_t get_ena_admin_feature_rss_flow_hash_input_L3_sort(const struct ena_admin_feature_rss_flow_hash_input *p)
+{
+	return (p->supported_input_sort & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_MASK) >> ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_SHIFT;
+}
+
+static inline void set_ena_admin_feature_rss_flow_hash_input_L3_sort(struct ena_admin_feature_rss_flow_hash_input *p, uint16_t val)
+{
+	p->supported_input_sort |= (val << ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_SHIFT) & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_MASK;
+}
+
+static inline uint16_t get_ena_admin_feature_rss_flow_hash_input_L4_sort(const struct ena_admin_feature_rss_flow_hash_input *p)
+{
+	return (p->supported_input_sort & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_MASK) >> ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_SHIFT;
+}
+
+static inline void set_ena_admin_feature_rss_flow_hash_input_L4_sort(struct ena_admin_feature_rss_flow_hash_input *p, uint16_t val)
+{
+	p->supported_input_sort |= (val << ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_SHIFT) & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_MASK;
+}
+
+static inline uint16_t get_ena_admin_feature_rss_flow_hash_input_enable_L3_sort(const struct ena_admin_feature_rss_flow_hash_input *p)
+{
+	return (p->enabled_input_sort & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L3_SORT_MASK) >> ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L3_SORT_SHIFT;
+}
+
+static inline void set_ena_admin_feature_rss_flow_hash_input_enable_L3_sort(struct ena_admin_feature_rss_flow_hash_input *p, uint16_t val)
+{
+	p->enabled_input_sort |= (val << ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L3_SORT_SHIFT) & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L3_SORT_MASK;
+}
+
+static inline uint16_t get_ena_admin_feature_rss_flow_hash_input_enable_L4_sort(const struct ena_admin_feature_rss_flow_hash_input *p)
+{
+	return (p->enabled_input_sort & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L4_SORT_MASK) >> ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L4_SORT_SHIFT;
+}
+
+static inline void set_ena_admin_feature_rss_flow_hash_input_enable_L4_sort(struct ena_admin_feature_rss_flow_hash_input *p, uint16_t val)
+{
+	p->enabled_input_sort |= (val << ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L4_SORT_SHIFT) & ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_ENABLE_L4_SORT_MASK;
+}
+
+static inline uint32_t get_ena_admin_host_info_major(const struct ena_admin_host_info *p)
+{
+	return p->driver_version & ENA_ADMIN_HOST_INFO_MAJOR_MASK;
+}
+
+static inline void set_ena_admin_host_info_major(struct ena_admin_host_info *p, uint32_t val)
+{
+	p->driver_version |= val & ENA_ADMIN_HOST_INFO_MAJOR_MASK;
+}
+
+static inline uint32_t get_ena_admin_host_info_minor(const struct ena_admin_host_info *p)
+{
+	return (p->driver_version & ENA_ADMIN_HOST_INFO_MINOR_MASK) >> ENA_ADMIN_HOST_INFO_MINOR_SHIFT;
+}
+
+static inline void set_ena_admin_host_info_minor(struct ena_admin_host_info *p, uint32_t val)
+{
+	p->driver_version |= (val << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) & ENA_ADMIN_HOST_INFO_MINOR_MASK;
+}
+
+static inline uint32_t get_ena_admin_host_info_sub_minor(const struct ena_admin_host_info *p)
+{
+	return (p->driver_version & ENA_ADMIN_HOST_INFO_SUB_MINOR_MASK) >> ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT;
+}
+
+static inline void set_ena_admin_host_info_sub_minor(struct ena_admin_host_info *p, uint32_t val)
+{
+	p->driver_version |= (val << ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT) & ENA_ADMIN_HOST_INFO_SUB_MINOR_MASK;
+}
+
+static inline uint8_t get_ena_admin_aenq_common_desc_phase(const struct ena_admin_aenq_common_desc *p)
+{
+	return p->flags & ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK;
+}
+
+static inline void set_ena_admin_aenq_common_desc_phase(struct ena_admin_aenq_common_desc *p, uint8_t val)
+{
+	p->flags |= val & ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK;
+}
+
+static inline uint32_t get_ena_admin_aenq_link_change_desc_link_status(const struct ena_admin_aenq_link_change_desc *p)
+{
+	return p->flags & ENA_ADMIN_AENQ_LINK_CHANGE_DESC_LINK_STATUS_MASK;
+}
+
+static inline void set_ena_admin_aenq_link_change_desc_link_status(struct ena_admin_aenq_link_change_desc *p, uint32_t val)
+{
+	p->flags |= val & ENA_ADMIN_AENQ_LINK_CHANGE_DESC_LINK_STATUS_MASK;
+}
+
+#endif /* !defined(ENA_DEFS_LINUX_MAINLINE) */
+#endif /*_ENA_ADMIN_H_ */
diff --git a/sys/contrib/ena-com/ena_com.c b/sys/contrib/ena-com/ena_com.c
new file mode 100644
index 0000000..c17ac24
--- /dev/null
+++ b/sys/contrib/ena-com/ena_com.c
@@ -0,0 +1,2761 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder 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.
+ */
+
+#include "ena_com.h"
+#ifdef ENA_INTERNAL
+#include "ena_gen_info.h"
+#endif
+
+/*****************************************************************************/
+/*****************************************************************************/
+
+/* Timeout in micro-sec */
+#define ADMIN_CMD_TIMEOUT_US (3000000)
+
+#define ENA_ASYNC_QUEUE_DEPTH 16
+#define ENA_ADMIN_QUEUE_DEPTH 32
+
+#define MIN_ENA_VER (((ENA_COMMON_SPEC_VERSION_MAJOR) << \
+		ENA_REGS_VERSION_MAJOR_VERSION_SHIFT) \
+		| (ENA_COMMON_SPEC_VERSION_MINOR))
+
+#define ENA_CTRL_MAJOR		0
+#define ENA_CTRL_MINOR		0
+#define ENA_CTRL_SUB_MINOR	1
+
+#define MIN_ENA_CTRL_VER \
+	(((ENA_CTRL_MAJOR) << \
+	(ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_SHIFT)) | \
+	((ENA_CTRL_MINOR) << \
+	(ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_SHIFT)) | \
+	(ENA_CTRL_SUB_MINOR))
+
+#define ENA_DMA_ADDR_TO_UINT32_LOW(x)	((u32)((u64)(x)))
+#define ENA_DMA_ADDR_TO_UINT32_HIGH(x)	((u32)(((u64)(x)) >> 32))
+
+#define ENA_MMIO_READ_TIMEOUT 0xFFFFFFFF
+
+/*****************************************************************************/
+/*****************************************************************************/
+/*****************************************************************************/
+
+enum ena_cmd_status {
+	ENA_CMD_SUBMITTED,
+	ENA_CMD_COMPLETED,
+	/* Abort - canceled by the driver */
+	ENA_CMD_ABORTED,
+};
+
+struct ena_comp_ctx {
+	ena_wait_event_t wait_event;
+	struct ena_admin_acq_entry *user_cqe;
+	u32 comp_size;
+	enum ena_cmd_status status;
+	/* status from the device */
+	u8 comp_status;
+	u8 cmd_opcode;
+	bool occupied;
+};
+
+struct ena_com_stats_ctx {
+	struct ena_admin_aq_get_stats_cmd get_cmd;
+	struct ena_admin_acq_get_stats_resp get_resp;
+};
+
+static inline int ena_com_mem_addr_set(struct ena_com_dev *ena_dev,
+				       struct ena_common_mem_addr *ena_addr,
+				       dma_addr_t addr)
+{
+	if ((addr & GENMASK_ULL(ena_dev->dma_addr_bits - 1, 0)) != addr) {
+		ena_trc_err("dma address has more bits that the device supports\n");
+		return ENA_COM_INVAL;
+	}
+
+	ena_addr->mem_addr_low = (u32)addr;
+	ena_addr->mem_addr_high = (u64)addr >> 32;
+
+	return 0;
+}
+
+static int ena_com_admin_init_sq(struct ena_com_admin_queue *queue)
+{
+	struct ena_com_admin_sq *sq = &queue->sq;
+	u16 size = ADMIN_SQ_SIZE(queue->q_depth);
+
+	ENA_MEM_ALLOC_COHERENT(queue->q_dmadev, size, sq->entries, sq->dma_addr,
+			       sq->mem_handle);
+
+	if (!sq->entries) {
+		ena_trc_err("memory allocation failed");
+		return ENA_COM_NO_MEM;
+	}
+
+	sq->head = 0;
+	sq->tail = 0;
+	sq->phase = 1;
+
+	sq->db_addr = NULL;
+
+	return 0;
+}
+
+static int ena_com_admin_init_cq(struct ena_com_admin_queue *queue)
+{
+	struct ena_com_admin_cq *cq = &queue->cq;
+	u16 size = ADMIN_CQ_SIZE(queue->q_depth);
+
+	ENA_MEM_ALLOC_COHERENT(queue->q_dmadev, size, cq->entries, cq->dma_addr,
+			       cq->mem_handle);
+
+	if (!cq->entries)  {
+		ena_trc_err("memory allocation failed");
+		return ENA_COM_NO_MEM;
+	}
+
+	cq->head = 0;
+	cq->phase = 1;
+
+	return 0;
+}
+
+static int ena_com_admin_init_aenq(struct ena_com_dev *dev,
+				   struct ena_aenq_handlers *aenq_handlers)
+{
+	struct ena_com_aenq *aenq = &dev->aenq;
+	u32 addr_low, addr_high, aenq_caps;
+	u16 size;
+
+	dev->aenq.q_depth = ENA_ASYNC_QUEUE_DEPTH;
+	size = ADMIN_AENQ_SIZE(ENA_ASYNC_QUEUE_DEPTH);
+	ENA_MEM_ALLOC_COHERENT(dev->dmadev, size,
+			aenq->entries,
+			aenq->dma_addr,
+			aenq->mem_handle);
+
+	if (!aenq->entries) {
+		ena_trc_err("memory allocation failed");
+		return ENA_COM_NO_MEM;
+	}
+
+	aenq->head = aenq->q_depth;
+	aenq->phase = 1;
+
+	addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(aenq->dma_addr);
+	addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(aenq->dma_addr);
+
+	ENA_REG_WRITE32(dev->bus, addr_low, dev->reg_bar + ENA_REGS_AENQ_BASE_LO_OFF);
+	ENA_REG_WRITE32(dev->bus, addr_high, dev->reg_bar + ENA_REGS_AENQ_BASE_HI_OFF);
+
+	aenq_caps = 0;
+	aenq_caps |= dev->aenq.q_depth & ENA_REGS_AENQ_CAPS_AENQ_DEPTH_MASK;
+	aenq_caps |= (sizeof(struct ena_admin_aenq_entry) <<
+		ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_SHIFT) &
+		ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_MASK;
+	ENA_REG_WRITE32(dev->bus, aenq_caps, dev->reg_bar + ENA_REGS_AENQ_CAPS_OFF);
+
+	if (unlikely(!aenq_handlers)) {
+		ena_trc_err("aenq handlers pointer is NULL\n");
+		return ENA_COM_INVAL;
+	}
+
+	aenq->aenq_handlers = aenq_handlers;
+
+	return 0;
+}
+
+static inline void comp_ctxt_release(struct ena_com_admin_queue *queue,
+				     struct ena_comp_ctx *comp_ctx)
+{
+	comp_ctx->occupied = false;
+	ATOMIC32_DEC(&queue->outstanding_cmds);
+}
+
+static struct ena_comp_ctx *get_comp_ctxt(struct ena_com_admin_queue *queue,
+					  u16 command_id, bool capture)
+{
+	if (unlikely(command_id >= queue->q_depth)) {
+		ena_trc_err("command id is larger than the queue size. cmd_id: %u queue size %d\n",
+			    command_id, queue->q_depth);
+		return NULL;
+	}
+
+	if (unlikely(queue->comp_ctx[command_id].occupied && capture)) {
+		ena_trc_err("Completion context is occupied\n");
+		return NULL;
+	}
+
+	if (capture) {
+		ATOMIC32_INC(&queue->outstanding_cmds);
+		queue->comp_ctx[command_id].occupied = true;
+	}
+
+	return &queue->comp_ctx[command_id];
+}
+
+static struct ena_comp_ctx *__ena_com_submit_admin_cmd(struct ena_com_admin_queue *admin_queue,
+						       struct ena_admin_aq_entry *cmd,
+						       size_t cmd_size_in_bytes,
+						       struct ena_admin_acq_entry *comp,
+						       size_t comp_size_in_bytes)
+{
+	struct ena_comp_ctx *comp_ctx;
+	u16 tail_masked, cmd_id;
+	u16 queue_size_mask;
+	u16 cnt;
+
+	queue_size_mask = admin_queue->q_depth - 1;
+
+	tail_masked = admin_queue->sq.tail & queue_size_mask;
+
+	/* In case of queue FULL */
+	cnt = admin_queue->sq.tail - admin_queue->sq.head;
+	if (cnt >= admin_queue->q_depth) {
+		ena_trc_dbg("admin queue is FULL (tail %d head %d depth: %d)\n",
+			    admin_queue->sq.tail,
+			    admin_queue->sq.head,
+			    admin_queue->q_depth);
+		admin_queue->stats.out_of_space++;
+		return ERR_PTR(ENA_COM_NO_SPACE);
+	}
+
+	cmd_id = admin_queue->curr_cmd_id;
+
+	cmd->aq_common_descriptor.flags |= admin_queue->sq.phase &
+		ENA_ADMIN_AQ_COMMON_DESC_PHASE_MASK;
+
+	cmd->aq_common_descriptor.command_id |= cmd_id &
+		ENA_ADMIN_AQ_COMMON_DESC_COMMAND_ID_MASK;
+
+	comp_ctx = get_comp_ctxt(admin_queue, cmd_id, true);
+	if (unlikely(!comp_ctx))
+		return ERR_PTR(ENA_COM_INVAL);
+
+	comp_ctx->status = ENA_CMD_SUBMITTED;
+	comp_ctx->comp_size = (u32)comp_size_in_bytes;
+	comp_ctx->user_cqe = comp;
+	comp_ctx->cmd_opcode = cmd->aq_common_descriptor.opcode;
+
+	ENA_WAIT_EVENT_CLEAR(comp_ctx->wait_event);
+
+	memcpy(&admin_queue->sq.entries[tail_masked], cmd, cmd_size_in_bytes);
+
+	admin_queue->curr_cmd_id = (admin_queue->curr_cmd_id + 1) &
+		queue_size_mask;
+
+	admin_queue->sq.tail++;
+	admin_queue->stats.submitted_cmd++;
+
+	if (unlikely((admin_queue->sq.tail & queue_size_mask) == 0))
+		admin_queue->sq.phase = !admin_queue->sq.phase;
+
+	ENA_REG_WRITE32(admin_queue->bus, admin_queue->sq.tail,
+			admin_queue->sq.db_addr);
+
+	return comp_ctx;
+}
+
+static inline int ena_com_init_comp_ctxt(struct ena_com_admin_queue *queue)
+{
+	size_t size = queue->q_depth * sizeof(struct ena_comp_ctx);
+	struct ena_comp_ctx *comp_ctx;
+	u16 i;
+
+	queue->comp_ctx = ENA_MEM_ALLOC(queue->q_dmadev, size);
+	if (unlikely(!queue->comp_ctx)) {
+		ena_trc_err("memory allocation failed");
+		return ENA_COM_NO_MEM;
+	}
+
+	for (i = 0; i < queue->q_depth; i++) {
+		comp_ctx = get_comp_ctxt(queue, i, false);
+		if (comp_ctx)
+			ENA_WAIT_EVENT_INIT(comp_ctx->wait_event);
+	}
+
+	return 0;
+}
+
+static struct ena_comp_ctx *ena_com_submit_admin_cmd(struct ena_com_admin_queue *admin_queue,
+						     struct ena_admin_aq_entry *cmd,
+						     size_t cmd_size_in_bytes,
+						     struct ena_admin_acq_entry *comp,
+						     size_t comp_size_in_bytes)
+{
+	unsigned long flags;
+	struct ena_comp_ctx *comp_ctx;
+
+	ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
+	if (unlikely(!admin_queue->running_state)) {
+		ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
+		return ERR_PTR(ENA_COM_NO_DEVICE);
+	}
+	comp_ctx = __ena_com_submit_admin_cmd(admin_queue, cmd,
+					      cmd_size_in_bytes,
+					      comp,
+					      comp_size_in_bytes);
+	if (unlikely(IS_ERR(comp_ctx)))
+		admin_queue->running_state = false;
+	ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
+
+	return comp_ctx;
+}
+
+static int ena_com_init_io_sq(struct ena_com_dev *ena_dev,
+			      struct ena_com_create_io_ctx *ctx,
+			      struct ena_com_io_sq *io_sq)
+{
+	size_t size;
+	int dev_node = 0;
+
+	memset(&io_sq->desc_addr, 0x0, sizeof(io_sq->desc_addr));
+
+	io_sq->desc_entry_size =
+		(io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) ?
+		sizeof(struct ena_eth_io_tx_desc) :
+		sizeof(struct ena_eth_io_rx_desc);
+
+	size = io_sq->desc_entry_size * io_sq->q_depth;
+	io_sq->bus = ena_dev->bus;
+
+	if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) {
+		ENA_MEM_ALLOC_COHERENT_NODE(ena_dev->dmadev,
+					    size,
+					    io_sq->desc_addr.virt_addr,
+					    io_sq->desc_addr.phys_addr,
+					    io_sq->desc_addr.mem_handle,
+					    ctx->numa_node,
+					    dev_node);
+		if (!io_sq->desc_addr.virt_addr) {
+			ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+					       size,
+					       io_sq->desc_addr.virt_addr,
+					       io_sq->desc_addr.phys_addr,
+					       io_sq->desc_addr.mem_handle);
+		}
+	} else {
+		ENA_MEM_ALLOC_NODE(ena_dev->dmadev,
+				   size,
+				   io_sq->desc_addr.virt_addr,
+				   ctx->numa_node,
+				   dev_node);
+		if (!io_sq->desc_addr.virt_addr) {
+			io_sq->desc_addr.virt_addr =
+				ENA_MEM_ALLOC(ena_dev->dmadev, size);
+		}
+	}
+
+	if (!io_sq->desc_addr.virt_addr) {
+		ena_trc_err("memory allocation failed");
+		return ENA_COM_NO_MEM;
+	}
+
+	io_sq->tail = 0;
+	io_sq->next_to_comp = 0;
+	io_sq->phase = 1;
+
+	return 0;
+}
+
+static int ena_com_init_io_cq(struct ena_com_dev *ena_dev,
+			      struct ena_com_create_io_ctx *ctx,
+			      struct ena_com_io_cq *io_cq)
+{
+	size_t size;
+	int prev_node = 0;
+
+	memset(&io_cq->cdesc_addr, 0x0, sizeof(io_cq->cdesc_addr));
+
+	/* Use the basic completion descriptor for Rx */
+	io_cq->cdesc_entry_size_in_bytes =
+		(io_cq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) ?
+		sizeof(struct ena_eth_io_tx_cdesc) :
+		sizeof(struct ena_eth_io_rx_cdesc_base);
+
+	size = io_cq->cdesc_entry_size_in_bytes * io_cq->q_depth;
+	io_cq->bus = ena_dev->bus;
+
+	ENA_MEM_ALLOC_COHERENT_NODE(ena_dev->dmadev,
+			size,
+			io_cq->cdesc_addr.virt_addr,
+			io_cq->cdesc_addr.phys_addr,
+			io_cq->cdesc_addr.mem_handle,
+			ctx->numa_node,
+			prev_node);
+	if (!io_cq->cdesc_addr.virt_addr) {
+		ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+				       size,
+				       io_cq->cdesc_addr.virt_addr,
+				       io_cq->cdesc_addr.phys_addr,
+				       io_cq->cdesc_addr.mem_handle);
+	}
+
+	if (!io_cq->cdesc_addr.virt_addr) {
+		ena_trc_err("memory allocation failed");
+		return ENA_COM_NO_MEM;
+	}
+
+	io_cq->phase = 1;
+	io_cq->head = 0;
+
+	return 0;
+}
+
+static void ena_com_handle_single_admin_completion(struct ena_com_admin_queue *admin_queue,
+						   struct ena_admin_acq_entry *cqe)
+{
+	struct ena_comp_ctx *comp_ctx;
+	u16 cmd_id;
+
+	cmd_id = cqe->acq_common_descriptor.command &
+		ENA_ADMIN_ACQ_COMMON_DESC_COMMAND_ID_MASK;
+
+	comp_ctx = get_comp_ctxt(admin_queue, cmd_id, false);
+	if (unlikely(!comp_ctx)) {
+		ena_trc_err("comp_ctx is NULL. Changing the admin queue running state\n");
+		admin_queue->running_state = false;
+		return;
+	}
+
+	comp_ctx->status = ENA_CMD_COMPLETED;
+	comp_ctx->comp_status = cqe->acq_common_descriptor.status;
+
+	if (comp_ctx->user_cqe)
+		memcpy(comp_ctx->user_cqe, (void *)cqe, comp_ctx->comp_size);
+
+	if (!admin_queue->polling)
+		ENA_WAIT_EVENT_SIGNAL(comp_ctx->wait_event);
+}
+
+static void ena_com_handle_admin_completion(struct ena_com_admin_queue *admin_queue)
+{
+	struct ena_admin_acq_entry *cqe = NULL;
+	u16 comp_num = 0;
+	u16 head_masked;
+	u8 phase;
+
+	head_masked = admin_queue->cq.head & (admin_queue->q_depth - 1);
+	phase = admin_queue->cq.phase;
+
+	cqe = &admin_queue->cq.entries[head_masked];
+
+	/* Go over all the completions */
+	while ((cqe->acq_common_descriptor.flags &
+			ENA_ADMIN_ACQ_COMMON_DESC_PHASE_MASK) == phase) {
+		/* Do not read the rest of the completion entry before the
+		 * phase bit was validated
+		 */
+		rmb();
+		ena_com_handle_single_admin_completion(admin_queue, cqe);
+
+		head_masked++;
+		comp_num++;
+		if (unlikely(head_masked == admin_queue->q_depth)) {
+			head_masked = 0;
+			phase = !phase;
+		}
+
+		cqe = &admin_queue->cq.entries[head_masked];
+	}
+
+	admin_queue->cq.head += comp_num;
+	admin_queue->cq.phase = phase;
+	admin_queue->sq.head += comp_num;
+	admin_queue->stats.completed_cmd += comp_num;
+}
+
+static int ena_com_comp_status_to_errno(u8 comp_status)
+{
+	if (unlikely(comp_status != 0))
+		ena_trc_err("admin command failed[%u]\n", comp_status);
+
+	if (unlikely(comp_status > ENA_ADMIN_UNKNOWN_ERROR))
+		return ENA_COM_INVAL;
+
+	switch (comp_status) {
+	case ENA_ADMIN_SUCCESS:
+		return 0;
+	case ENA_ADMIN_RESOURCE_ALLOCATION_FAILURE:
+		return ENA_COM_NO_MEM;
+	case ENA_ADMIN_UNSUPPORTED_OPCODE:
+		return ENA_COM_PERMISSION;
+	case ENA_ADMIN_BAD_OPCODE:
+	case ENA_ADMIN_MALFORMED_REQUEST:
+	case ENA_ADMIN_ILLEGAL_PARAMETER:
+	case ENA_ADMIN_UNKNOWN_ERROR:
+		return ENA_COM_INVAL;
+	}
+
+	return 0;
+}
+
+static int ena_com_wait_and_process_admin_cq_polling(struct ena_comp_ctx *comp_ctx,
+						     struct ena_com_admin_queue *admin_queue)
+{
+	unsigned long flags, timeout;
+	int ret;
+
+	timeout = ENA_GET_SYSTEM_TIMEOUT(admin_queue->completion_timeout);
+
+	while (1) {
+                ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
+                ena_com_handle_admin_completion(admin_queue);
+                ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
+
+                if (comp_ctx->status != ENA_CMD_SUBMITTED)
+                    break;
+
+		if (ENA_TIME_EXPIRE(timeout)) {
+			ena_trc_err("Wait for completion (polling) timeout\n");
+			/* ENA didn't have any completion */
+			ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
+			admin_queue->stats.no_completion++;
+			admin_queue->running_state = false;
+			ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
+
+			ret = ENA_COM_TIMER_EXPIRED;
+			goto err;
+		}
+
+		ENA_MSLEEP(100);
+	}
+
+	if (unlikely(comp_ctx->status == ENA_CMD_ABORTED)) {
+		ena_trc_err("Command was aborted\n");
+		ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
+		admin_queue->stats.aborted_cmd++;
+		ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
+		ret = ENA_COM_NO_DEVICE;
+		goto err;
+	}
+
+	ENA_WARN(comp_ctx->status != ENA_CMD_COMPLETED,
+		 "Invalid comp status %d\n", comp_ctx->status);
+
+	ret = ena_com_comp_status_to_errno(comp_ctx->comp_status);
+err:
+	comp_ctxt_release(admin_queue, comp_ctx);
+	return ret;
+}
+
+static int ena_com_wait_and_process_admin_cq_interrupts(struct ena_comp_ctx *comp_ctx,
+							struct ena_com_admin_queue *admin_queue)
+{
+	unsigned long flags;
+	int ret;
+
+	ENA_WAIT_EVENT_WAIT(comp_ctx->wait_event,
+			    admin_queue->completion_timeout);
+
+	/* In case the command wasn't completed find out the root cause.
+	 * There might be 2 kinds of errors
+	 * 1) No completion (timeout reached)
+	 * 2) There is completion but the device didn't get any msi-x interrupt.
+	 */
+	if (unlikely(comp_ctx->status == ENA_CMD_SUBMITTED)) {
+		ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
+		ena_com_handle_admin_completion(admin_queue);
+		admin_queue->stats.no_completion++;
+		ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
+
+		if (comp_ctx->status == ENA_CMD_COMPLETED)
+			ena_trc_err("The ena device have completion but the driver didn't receive any MSI-X interrupt (cmd %d)\n",
+				    comp_ctx->cmd_opcode);
+		else
+			ena_trc_err("The ena device doesn't send any completion for the admin cmd %d status %d\n",
+				    comp_ctx->cmd_opcode, comp_ctx->status);
+
+		admin_queue->running_state = false;
+		ret = ENA_COM_TIMER_EXPIRED;
+		goto err;
+	}
+
+	ret = ena_com_comp_status_to_errno(comp_ctx->comp_status);
+err:
+	comp_ctxt_release(admin_queue, comp_ctx);
+	return ret;
+}
+
+/* This method read the hardware device register through posting writes
+ * and waiting for response
+ * On timeout the function will return ENA_MMIO_READ_TIMEOUT
+ */
+static u32 ena_com_reg_bar_read32(struct ena_com_dev *ena_dev, u16 offset)
+{
+	struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
+	volatile struct ena_admin_ena_mmio_req_read_less_resp *read_resp =
+		mmio_read->read_resp;
+	u32 mmio_read_reg, timeout, ret;
+	unsigned long flags;
+	int i;
+
+	ENA_MIGHT_SLEEP();
+
+	timeout = mmio_read->reg_read_to ? : ENA_REG_READ_TIMEOUT;
+
+	/* If readless is disabled, perform regular read */
+	if (!mmio_read->readless_supported)
+		return ENA_REG_READ32(ena_dev->bus, ena_dev->reg_bar + offset);
+
+	ENA_SPINLOCK_LOCK(mmio_read->lock, flags);
+	mmio_read->seq_num++;
+
+	read_resp->req_id = mmio_read->seq_num + 0xDEAD;
+	mmio_read_reg = (offset << ENA_REGS_MMIO_REG_READ_REG_OFF_SHIFT) &
+			ENA_REGS_MMIO_REG_READ_REG_OFF_MASK;
+	mmio_read_reg |= mmio_read->seq_num &
+			ENA_REGS_MMIO_REG_READ_REQ_ID_MASK;
+
+	/* make sure read_resp->req_id get updated before the hw can write
+	 * there
+	 */
+	wmb();
+
+	ENA_REG_WRITE32(ena_dev->bus, mmio_read_reg, ena_dev->reg_bar + ENA_REGS_MMIO_REG_READ_OFF);
+
+	for (i = 0; i < timeout; i++) {
+		if (read_resp->req_id == mmio_read->seq_num)
+			break;
+
+		ENA_UDELAY(1);
+	}
+
+	if (unlikely(i == timeout)) {
+		ena_trc_err("reading reg failed for timeout. expected: req id[%hu] offset[%hu] actual: req id[%hu] offset[%hu]\n",
+			    mmio_read->seq_num,
+			    offset,
+			    read_resp->req_id,
+			    read_resp->reg_off);
+		ret = ENA_MMIO_READ_TIMEOUT;
+		goto err;
+	}
+
+	if (read_resp->reg_off != offset) {
+		ena_trc_err("Read failure: wrong offset provided");
+		ret = ENA_MMIO_READ_TIMEOUT;
+	} else {
+		ret = read_resp->reg_val;
+	}
+err:
+	ENA_SPINLOCK_UNLOCK(mmio_read->lock, flags);
+
+	return ret;
+}
+
+/* There are two types to wait for completion.
+ * Polling mode - wait until the completion is available.
+ * Async mode - wait on wait queue until the completion is ready
+ * (or the timeout expired).
+ * It is expected that the IRQ called ena_com_handle_admin_completion
+ * to mark the completions.
+ */
+static int ena_com_wait_and_process_admin_cq(struct ena_comp_ctx *comp_ctx,
+					     struct ena_com_admin_queue *admin_queue)
+{
+	if (admin_queue->polling)
+		return ena_com_wait_and_process_admin_cq_polling(comp_ctx,
+								 admin_queue);
+
+	return ena_com_wait_and_process_admin_cq_interrupts(comp_ctx,
+							    admin_queue);
+}
+
+static int ena_com_destroy_io_sq(struct ena_com_dev *ena_dev,
+				 struct ena_com_io_sq *io_sq)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	struct ena_admin_aq_destroy_sq_cmd destroy_cmd;
+	struct ena_admin_acq_destroy_sq_resp_desc destroy_resp;
+	u8 direction;
+	int ret;
+
+	memset(&destroy_cmd, 0x0, sizeof(destroy_cmd));
+
+	if (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX)
+		direction = ENA_ADMIN_SQ_DIRECTION_TX;
+	else
+		direction = ENA_ADMIN_SQ_DIRECTION_RX;
+
+	destroy_cmd.sq.sq_identity |= (direction <<
+		ENA_ADMIN_SQ_SQ_DIRECTION_SHIFT) &
+		ENA_ADMIN_SQ_SQ_DIRECTION_MASK;
+
+	destroy_cmd.sq.sq_idx = io_sq->idx;
+	destroy_cmd.aq_common_descriptor.opcode = ENA_ADMIN_DESTROY_SQ;
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&destroy_cmd,
+					    sizeof(destroy_cmd),
+					    (struct ena_admin_acq_entry *)&destroy_resp,
+					    sizeof(destroy_resp));
+
+	if (unlikely(ret && (ret != ENA_COM_NO_DEVICE)))
+		ena_trc_err("failed to destroy io sq error: %d\n", ret);
+
+	return ret;
+}
+
+static void ena_com_io_queue_free(struct ena_com_dev *ena_dev,
+				  struct ena_com_io_sq *io_sq,
+				  struct ena_com_io_cq *io_cq)
+{
+	size_t size;
+
+	if (io_cq->cdesc_addr.virt_addr) {
+		size = io_cq->cdesc_entry_size_in_bytes * io_cq->q_depth;
+
+		ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
+				      size,
+				      io_cq->cdesc_addr.virt_addr,
+				      io_cq->cdesc_addr.phys_addr,
+				      io_cq->cdesc_addr.mem_handle);
+
+		io_cq->cdesc_addr.virt_addr = NULL;
+	}
+
+	if (io_sq->desc_addr.virt_addr) {
+		size = io_sq->desc_entry_size * io_sq->q_depth;
+
+		if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
+			ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
+					      size,
+					      io_sq->desc_addr.virt_addr,
+					      io_sq->desc_addr.phys_addr,
+					      io_sq->desc_addr.mem_handle);
+		else
+			ENA_MEM_FREE(ena_dev->dmadev, io_sq->desc_addr.virt_addr);
+
+		io_sq->desc_addr.virt_addr = NULL;
+	}
+}
+
+static int wait_for_reset_state(struct ena_com_dev *ena_dev, u32 timeout,
+				u16 exp_state)
+{
+	u32 val, i;
+
+	for (i = 0; i < timeout; i++) {
+		val = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF);
+
+		if (unlikely(val == ENA_MMIO_READ_TIMEOUT)) {
+			ena_trc_err("Reg read timeout occurred\n");
+			return ENA_COM_TIMER_EXPIRED;
+		}
+
+		if ((val & ENA_REGS_DEV_STS_RESET_IN_PROGRESS_MASK) ==
+			exp_state)
+			return 0;
+
+		/* The resolution of the timeout is 100ms */
+		ENA_MSLEEP(100);
+	}
+
+	return ENA_COM_TIMER_EXPIRED;
+}
+
+static bool ena_com_check_supported_feature_id(struct ena_com_dev *ena_dev,
+					       enum ena_admin_aq_feature_id feature_id)
+{
+	u32 feature_mask = 1 << feature_id;
+
+	/* Device attributes is always supported */
+	if ((feature_id != ENA_ADMIN_DEVICE_ATTRIBUTES) &&
+	    !(ena_dev->supported_features & feature_mask))
+		return false;
+
+	return true;
+}
+
+static int ena_com_get_feature_ex(struct ena_com_dev *ena_dev,
+				  struct ena_admin_get_feat_resp *get_resp,
+				  enum ena_admin_aq_feature_id feature_id,
+				  dma_addr_t control_buf_dma_addr,
+				  u32 control_buff_size)
+{
+	struct ena_com_admin_queue *admin_queue;
+	struct ena_admin_get_feat_cmd get_cmd;
+	int ret;
+
+	if (!ena_com_check_supported_feature_id(ena_dev, feature_id)) {
+		ena_trc_dbg("Feature %d isn't supported\n", feature_id);
+		return ENA_COM_PERMISSION;
+	}
+
+	memset(&get_cmd, 0x0, sizeof(get_cmd));
+	admin_queue = &ena_dev->admin_queue;
+
+	get_cmd.aq_common_descriptor.opcode = ENA_ADMIN_GET_FEATURE;
+
+	if (control_buff_size)
+		get_cmd.aq_common_descriptor.flags =
+			ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
+	else
+		get_cmd.aq_common_descriptor.flags = 0;
+
+	ret = ena_com_mem_addr_set(ena_dev,
+				   &get_cmd.control_buffer.address,
+				   control_buf_dma_addr);
+	if (unlikely(ret)) {
+		ena_trc_err("memory address set failed\n");
+		return ret;
+	}
+
+	get_cmd.control_buffer.length = control_buff_size;
+
+	get_cmd.feat_common.feature_id = feature_id;
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)
+					    &get_cmd,
+					    sizeof(get_cmd),
+					    (struct ena_admin_acq_entry *)
+					    get_resp,
+					    sizeof(*get_resp));
+
+	if (unlikely(ret))
+		ena_trc_err("Failed to submit get_feature command %d error: %d\n",
+			    feature_id, ret);
+
+	return ret;
+}
+
+static int ena_com_get_feature(struct ena_com_dev *ena_dev,
+			       struct ena_admin_get_feat_resp *get_resp,
+			       enum ena_admin_aq_feature_id feature_id)
+{
+	return ena_com_get_feature_ex(ena_dev,
+				      get_resp,
+				      feature_id,
+				      0,
+				      0);
+}
+
+static int ena_com_hash_key_allocate(struct ena_com_dev *ena_dev)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+
+	ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+			       sizeof(*rss->hash_key),
+			       rss->hash_key,
+			       rss->hash_key_dma_addr,
+			       rss->hash_key_mem_handle);
+
+	if (unlikely(!rss->hash_key))
+		return ENA_COM_NO_MEM;
+
+	return 0;
+}
+
+static void ena_com_hash_key_destroy(struct ena_com_dev *ena_dev)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+
+	if (rss->hash_key)
+		ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
+				      sizeof(*rss->hash_key),
+				      rss->hash_key,
+				      rss->hash_key_dma_addr,
+				      rss->hash_key_mem_handle);
+	rss->hash_key = NULL;
+}
+
+static int ena_com_hash_ctrl_init(struct ena_com_dev *ena_dev)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+
+	ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+			       sizeof(*rss->hash_ctrl),
+			       rss->hash_ctrl,
+			       rss->hash_ctrl_dma_addr,
+			       rss->hash_ctrl_mem_handle);
+
+	if (unlikely(!rss->hash_ctrl))
+		return ENA_COM_NO_MEM;
+
+	return 0;
+}
+
+static void ena_com_hash_ctrl_destroy(struct ena_com_dev *ena_dev)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+
+	if (rss->hash_ctrl)
+		ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
+				      sizeof(*rss->hash_ctrl),
+				      rss->hash_ctrl,
+				      rss->hash_ctrl_dma_addr,
+				      rss->hash_ctrl_mem_handle);
+	rss->hash_ctrl = NULL;
+}
+
+static int ena_com_indirect_table_allocate(struct ena_com_dev *ena_dev,
+					   u16 log_size)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_get_feat_resp get_resp;
+	size_t tbl_size;
+	int ret;
+
+	ret = ena_com_get_feature(ena_dev, &get_resp,
+				  ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG);
+	if (unlikely(ret))
+		return ret;
+
+	if ((get_resp.u.ind_table.min_size > log_size) ||
+	    (get_resp.u.ind_table.max_size < log_size)) {
+		ena_trc_err("indirect table size doesn't fit. requested size: %d while min is:%d and max %d\n",
+			    1 << log_size,
+			    1 << get_resp.u.ind_table.min_size,
+			    1 << get_resp.u.ind_table.max_size);
+		return ENA_COM_INVAL;
+	}
+
+	tbl_size = (1ULL << log_size) *
+		sizeof(struct ena_admin_rss_ind_table_entry);
+
+	ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+			     tbl_size,
+			     rss->rss_ind_tbl,
+			     rss->rss_ind_tbl_dma_addr,
+			     rss->rss_ind_tbl_mem_handle);
+	if (unlikely(!rss->rss_ind_tbl))
+		goto mem_err1;
+
+	tbl_size = (1ULL << log_size) * sizeof(u16);
+	rss->host_rss_ind_tbl =
+		ENA_MEM_ALLOC(ena_dev->dmadev, tbl_size);
+	if (unlikely(!rss->host_rss_ind_tbl))
+		goto mem_err2;
+
+	rss->tbl_log_size = log_size;
+
+	return 0;
+
+mem_err2:
+	tbl_size = (1ULL << log_size) *
+		sizeof(struct ena_admin_rss_ind_table_entry);
+
+	ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
+			      tbl_size,
+			      rss->rss_ind_tbl,
+			      rss->rss_ind_tbl_dma_addr,
+			      rss->rss_ind_tbl_mem_handle);
+	rss->rss_ind_tbl = NULL;
+mem_err1:
+	rss->tbl_log_size = 0;
+	return ENA_COM_NO_MEM;
+}
+
+static void ena_com_indirect_table_destroy(struct ena_com_dev *ena_dev)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+	size_t tbl_size = (1ULL << rss->tbl_log_size) *
+		sizeof(struct ena_admin_rss_ind_table_entry);
+
+	if (rss->rss_ind_tbl)
+		ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
+				      tbl_size,
+				      rss->rss_ind_tbl,
+				      rss->rss_ind_tbl_dma_addr,
+				      rss->rss_ind_tbl_mem_handle);
+	rss->rss_ind_tbl = NULL;
+
+	if (rss->host_rss_ind_tbl)
+		ENA_MEM_FREE(ena_dev->dmadev, rss->host_rss_ind_tbl);
+	rss->host_rss_ind_tbl = NULL;
+}
+
+static int ena_com_create_io_sq(struct ena_com_dev *ena_dev,
+				struct ena_com_io_sq *io_sq, u16 cq_idx)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	struct ena_admin_aq_create_sq_cmd create_cmd;
+	struct ena_admin_acq_create_sq_resp_desc cmd_completion;
+	u8 direction;
+	int ret;
+
+	memset(&create_cmd, 0x0, sizeof(create_cmd));
+
+	create_cmd.aq_common_descriptor.opcode = ENA_ADMIN_CREATE_SQ;
+
+	if (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX)
+		direction = ENA_ADMIN_SQ_DIRECTION_TX;
+	else
+		direction = ENA_ADMIN_SQ_DIRECTION_RX;
+
+	create_cmd.sq_identity |= (direction <<
+		ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_SHIFT) &
+		ENA_ADMIN_AQ_CREATE_SQ_CMD_SQ_DIRECTION_MASK;
+
+	create_cmd.sq_caps_2 |= io_sq->mem_queue_type &
+		ENA_ADMIN_AQ_CREATE_SQ_CMD_PLACEMENT_POLICY_MASK;
+
+	create_cmd.sq_caps_2 |= (ENA_ADMIN_COMPLETION_POLICY_DESC <<
+		ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_SHIFT) &
+		ENA_ADMIN_AQ_CREATE_SQ_CMD_COMPLETION_POLICY_MASK;
+
+	create_cmd.sq_caps_3 |=
+		ENA_ADMIN_AQ_CREATE_SQ_CMD_IS_PHYSICALLY_CONTIGUOUS_MASK;
+
+	create_cmd.cq_idx = cq_idx;
+	create_cmd.sq_depth = io_sq->q_depth;
+
+	if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) {
+		ret = ena_com_mem_addr_set(ena_dev,
+					   &create_cmd.sq_ba,
+					   io_sq->desc_addr.phys_addr);
+		if (unlikely(ret)) {
+			ena_trc_err("memory address set failed\n");
+			return ret;
+		}
+	}
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&create_cmd,
+					    sizeof(create_cmd),
+					    (struct ena_admin_acq_entry *)&cmd_completion,
+					    sizeof(cmd_completion));
+	if (unlikely(ret)) {
+		ena_trc_err("Failed to create IO SQ. error: %d\n", ret);
+		return ret;
+	}
+
+	io_sq->idx = cmd_completion.sq_idx;
+
+	io_sq->db_addr = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
+		(uintptr_t)cmd_completion.sq_doorbell_offset);
+
+	if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
+		io_sq->header_addr = (u8 __iomem *)((uintptr_t)ena_dev->mem_bar
+				+ cmd_completion.llq_headers_offset);
+
+		io_sq->desc_addr.pbuf_dev_addr =
+			(u8 __iomem *)((uintptr_t)ena_dev->mem_bar +
+			cmd_completion.llq_descriptors_offset);
+	}
+
+	ena_trc_dbg("created sq[%u], depth[%u]\n", io_sq->idx, io_sq->q_depth);
+
+	return ret;
+}
+
+static int ena_com_ind_tbl_convert_to_device(struct ena_com_dev *ena_dev)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_com_io_sq *io_sq;
+	u16 qid;
+	int i;
+
+	for (i = 0; i < 1 << rss->tbl_log_size; i++) {
+		qid = rss->host_rss_ind_tbl[i];
+		if (qid >= ENA_TOTAL_NUM_QUEUES)
+			return ENA_COM_INVAL;
+
+		io_sq = &ena_dev->io_sq_queues[qid];
+
+		if (io_sq->direction != ENA_COM_IO_QUEUE_DIRECTION_RX)
+			return ENA_COM_INVAL;
+
+		rss->rss_ind_tbl[i].cq_idx = io_sq->idx;
+	}
+
+	return 0;
+}
+
+static int ena_com_ind_tbl_convert_from_device(struct ena_com_dev *ena_dev)
+{
+	u16 dev_idx_to_host_tbl[ENA_TOTAL_NUM_QUEUES] = { (u16)-1 };
+	struct ena_rss *rss = &ena_dev->rss;
+	u8 idx;
+	u16 i;
+
+	for (i = 0; i < ENA_TOTAL_NUM_QUEUES; i++)
+		dev_idx_to_host_tbl[ena_dev->io_sq_queues[i].idx] = i;
+
+	for (i = 0; i < 1 << rss->tbl_log_size; i++) {
+		if (rss->rss_ind_tbl[i].cq_idx > ENA_TOTAL_NUM_QUEUES)
+			return ENA_COM_INVAL;
+		idx = (u8)rss->rss_ind_tbl[i].cq_idx;
+
+		if (dev_idx_to_host_tbl[idx] > ENA_TOTAL_NUM_QUEUES)
+			return ENA_COM_INVAL;
+
+		rss->host_rss_ind_tbl[i] = dev_idx_to_host_tbl[idx];
+	}
+
+	return 0;
+}
+
+static int ena_com_init_interrupt_moderation_table(struct ena_com_dev *ena_dev)
+{
+	size_t size;
+
+	size = sizeof(struct ena_intr_moder_entry) * ENA_INTR_MAX_NUM_OF_LEVELS;
+
+	ena_dev->intr_moder_tbl = ENA_MEM_ALLOC(ena_dev->dmadev, size);
+	if (!ena_dev->intr_moder_tbl)
+		return ENA_COM_NO_MEM;
+
+	ena_com_config_default_interrupt_moderation_table(ena_dev);
+
+	return 0;
+}
+
+static void ena_com_update_intr_delay_resolution(struct ena_com_dev *ena_dev,
+						 u16 intr_delay_resolution)
+{
+	struct ena_intr_moder_entry *intr_moder_tbl = ena_dev->intr_moder_tbl;
+	unsigned int i;
+
+	if (!intr_delay_resolution) {
+		ena_trc_err("Illegal intr_delay_resolution provided. Going to use default 1 usec resolution\n");
+		intr_delay_resolution = 1;
+	}
+	ena_dev->intr_delay_resolution = intr_delay_resolution;
+
+	/* update Rx */
+	for (i = 0; i < ENA_INTR_MAX_NUM_OF_LEVELS; i++)
+		intr_moder_tbl[i].intr_moder_interval /= intr_delay_resolution;
+
+	/* update Tx */
+	ena_dev->intr_moder_tx_interval /= intr_delay_resolution;
+}
+
+/*****************************************************************************/
+/*******************************      API       ******************************/
+/*****************************************************************************/
+
+int ena_com_execute_admin_command(struct ena_com_admin_queue *admin_queue,
+				  struct ena_admin_aq_entry *cmd,
+				  size_t cmd_size,
+				  struct ena_admin_acq_entry *comp,
+				  size_t comp_size)
+{
+	struct ena_comp_ctx *comp_ctx;
+	int ret;
+
+	comp_ctx = ena_com_submit_admin_cmd(admin_queue, cmd, cmd_size,
+					    comp, comp_size);
+	if (unlikely(IS_ERR(comp_ctx))) {
+		if (comp_ctx == ERR_PTR(ENA_COM_NO_DEVICE))
+			ena_trc_dbg("Failed to submit command [%ld]\n",
+				    PTR_ERR(comp_ctx));
+		else
+			ena_trc_err("Failed to submit command [%ld]\n",
+				    PTR_ERR(comp_ctx));
+
+		return PTR_ERR(comp_ctx);
+	}
+
+	ret = ena_com_wait_and_process_admin_cq(comp_ctx, admin_queue);
+	if (unlikely(ret)) {
+		if (admin_queue->running_state)
+			ena_trc_err("Failed to process command. ret = %d\n",
+				    ret);
+		else
+			ena_trc_dbg("Failed to process command. ret = %d\n",
+				    ret);
+	}
+	return ret;
+}
+
+int ena_com_create_io_cq(struct ena_com_dev *ena_dev,
+			 struct ena_com_io_cq *io_cq)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	struct ena_admin_aq_create_cq_cmd create_cmd;
+	struct ena_admin_acq_create_cq_resp_desc cmd_completion;
+	int ret;
+
+	memset(&create_cmd, 0x0, sizeof(create_cmd));
+
+	create_cmd.aq_common_descriptor.opcode = ENA_ADMIN_CREATE_CQ;
+
+	create_cmd.cq_caps_2 |= (io_cq->cdesc_entry_size_in_bytes / 4) &
+		ENA_ADMIN_AQ_CREATE_CQ_CMD_CQ_ENTRY_SIZE_WORDS_MASK;
+	create_cmd.cq_caps_1 |=
+		ENA_ADMIN_AQ_CREATE_CQ_CMD_INTERRUPT_MODE_ENABLED_MASK;
+
+	create_cmd.msix_vector = io_cq->msix_vector;
+	create_cmd.cq_depth = io_cq->q_depth;
+
+	ret = ena_com_mem_addr_set(ena_dev,
+				   &create_cmd.cq_ba,
+				   io_cq->cdesc_addr.phys_addr);
+	if (unlikely(ret)) {
+		ena_trc_err("memory address set failed\n");
+		return ret;
+	}
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&create_cmd,
+					    sizeof(create_cmd),
+					    (struct ena_admin_acq_entry *)&cmd_completion,
+					    sizeof(cmd_completion));
+	if (unlikely(ret)) {
+		ena_trc_err("Failed to create IO CQ. error: %d\n", ret);
+		return ret;
+	}
+
+	io_cq->idx = cmd_completion.cq_idx;
+
+	io_cq->unmask_reg = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
+		cmd_completion.cq_interrupt_unmask_register_offset);
+
+	if (cmd_completion.cq_head_db_register_offset)
+		io_cq->cq_head_db_reg =
+			(u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
+			cmd_completion.cq_head_db_register_offset);
+
+	if (cmd_completion.numa_node_register_offset)
+		io_cq->numa_node_cfg_reg =
+			(u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
+			cmd_completion.numa_node_register_offset);
+
+	ena_trc_dbg("created cq[%u], depth[%u]\n", io_cq->idx, io_cq->q_depth);
+
+	return ret;
+}
+
+int ena_com_get_io_handlers(struct ena_com_dev *ena_dev, u16 qid,
+			    struct ena_com_io_sq **io_sq,
+			    struct ena_com_io_cq **io_cq)
+{
+	if (qid >= ENA_TOTAL_NUM_QUEUES) {
+		ena_trc_err("Invalid queue number %d but the max is %d\n",
+			    qid, ENA_TOTAL_NUM_QUEUES);
+		return ENA_COM_INVAL;
+	}
+
+	*io_sq = &ena_dev->io_sq_queues[qid];
+	*io_cq = &ena_dev->io_cq_queues[qid];
+
+	return 0;
+}
+
+void ena_com_abort_admin_commands(struct ena_com_dev *ena_dev)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	struct ena_comp_ctx *comp_ctx;
+	u16 i;
+
+	if (!admin_queue->comp_ctx)
+		return;
+
+	for (i = 0; i < admin_queue->q_depth; i++) {
+		comp_ctx = get_comp_ctxt(admin_queue, i, false);
+		if (unlikely(!comp_ctx))
+			break;
+
+		comp_ctx->status = ENA_CMD_ABORTED;
+
+		ENA_WAIT_EVENT_SIGNAL(comp_ctx->wait_event);
+	}
+}
+
+void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	unsigned long flags;
+
+	ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
+	while (ATOMIC32_READ(&admin_queue->outstanding_cmds) != 0) {
+		ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
+		ENA_MSLEEP(20);
+		ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
+	}
+	ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
+}
+
+int ena_com_destroy_io_cq(struct ena_com_dev *ena_dev,
+			  struct ena_com_io_cq *io_cq)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	struct ena_admin_aq_destroy_cq_cmd destroy_cmd;
+	struct ena_admin_acq_destroy_cq_resp_desc destroy_resp;
+	int ret;
+
+	memset(&destroy_cmd, 0x0, sizeof(destroy_cmd));
+
+	destroy_cmd.cq_idx = io_cq->idx;
+	destroy_cmd.aq_common_descriptor.opcode = ENA_ADMIN_DESTROY_CQ;
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&destroy_cmd,
+					    sizeof(destroy_cmd),
+					    (struct ena_admin_acq_entry *)&destroy_resp,
+					    sizeof(destroy_resp));
+
+	if (unlikely(ret && (ret != ENA_COM_NO_DEVICE)))
+		ena_trc_err("Failed to destroy IO CQ. error: %d\n", ret);
+
+	return ret;
+}
+
+bool ena_com_get_admin_running_state(struct ena_com_dev *ena_dev)
+{
+	return ena_dev->admin_queue.running_state;
+}
+
+void ena_com_set_admin_running_state(struct ena_com_dev *ena_dev, bool state)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	unsigned long flags;
+
+	ENA_SPINLOCK_LOCK(admin_queue->q_lock, flags);
+	ena_dev->admin_queue.running_state = state;
+	ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
+}
+
+void ena_com_admin_aenq_enable(struct ena_com_dev *ena_dev)
+{
+	u16 depth = ena_dev->aenq.q_depth;
+
+	ENA_WARN(ena_dev->aenq.head != depth, "Invalid AENQ state\n");
+
+	/* Init head_db to mark that all entries in the queue
+	 * are initially available
+	 */
+	ENA_REG_WRITE32(ena_dev->bus, depth, ena_dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF);
+}
+
+int ena_com_set_aenq_config(struct ena_com_dev *ena_dev, u32 groups_flag)
+{
+	struct ena_com_admin_queue *admin_queue;
+	struct ena_admin_set_feat_cmd cmd;
+	struct ena_admin_set_feat_resp resp;
+	struct ena_admin_get_feat_resp get_resp;
+	int ret;
+
+	ret = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_AENQ_CONFIG);
+	if (ret) {
+		ena_trc_info("Can't get aenq configuration\n");
+		return ret;
+	}
+
+	if ((get_resp.u.aenq.supported_groups & groups_flag) != groups_flag) {
+		ena_trc_warn("Trying to set unsupported aenq events. supported flag: %x asked flag: %x\n",
+			     get_resp.u.aenq.supported_groups,
+			     groups_flag);
+		return ENA_COM_PERMISSION;
+	}
+
+	memset(&cmd, 0x0, sizeof(cmd));
+	admin_queue = &ena_dev->admin_queue;
+
+	cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
+	cmd.aq_common_descriptor.flags = 0;
+	cmd.feat_common.feature_id = ENA_ADMIN_AENQ_CONFIG;
+	cmd.u.aenq.enabled_groups = groups_flag;
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&cmd,
+					    sizeof(cmd),
+					    (struct ena_admin_acq_entry *)&resp,
+					    sizeof(resp));
+
+	if (unlikely(ret))
+		ena_trc_err("Failed to config AENQ ret: %d\n", ret);
+
+	return ret;
+}
+
+int ena_com_get_dma_width(struct ena_com_dev *ena_dev)
+{
+	u32 caps = ena_com_reg_bar_read32(ena_dev, ENA_REGS_CAPS_OFF);
+	int width;
+
+	if (unlikely(caps == ENA_MMIO_READ_TIMEOUT)) {
+		ena_trc_err("Reg read timeout occurred\n");
+		return ENA_COM_TIMER_EXPIRED;
+	}
+
+	width = (caps & ENA_REGS_CAPS_DMA_ADDR_WIDTH_MASK) >>
+		ENA_REGS_CAPS_DMA_ADDR_WIDTH_SHIFT;
+
+	ena_trc_dbg("ENA dma width: %d\n", width);
+
+	if ((width < 32) || width > ENA_MAX_PHYS_ADDR_SIZE_BITS) {
+		ena_trc_err("DMA width illegal value: %d\n", width);
+		return ENA_COM_INVAL;
+	}
+
+	ena_dev->dma_addr_bits = width;
+
+	return width;
+}
+
+int ena_com_validate_version(struct ena_com_dev *ena_dev)
+{
+	u32 ver;
+	u32 ctrl_ver;
+	u32 ctrl_ver_masked;
+
+	/* Make sure the ENA version and the controller version are at least
+	 * as the driver expects
+	 */
+	ver = ena_com_reg_bar_read32(ena_dev, ENA_REGS_VERSION_OFF);
+	ctrl_ver = ena_com_reg_bar_read32(ena_dev,
+					  ENA_REGS_CONTROLLER_VERSION_OFF);
+
+	if (unlikely((ver == ENA_MMIO_READ_TIMEOUT) ||
+		     (ctrl_ver == ENA_MMIO_READ_TIMEOUT))) {
+		ena_trc_err("Reg read timeout occurred\n");
+		return ENA_COM_TIMER_EXPIRED;
+	}
+
+	ena_trc_info("ena device version: %d.%d\n",
+		     (ver & ENA_REGS_VERSION_MAJOR_VERSION_MASK) >>
+		     ENA_REGS_VERSION_MAJOR_VERSION_SHIFT,
+		     ver & ENA_REGS_VERSION_MINOR_VERSION_MASK);
+
+	if (ver < MIN_ENA_VER) {
+		ena_trc_err("ENA version is lower than the minimal version the driver supports\n");
+		return -1;
+	}
+
+	ena_trc_info("ena controller version: %d.%d.%d implementation version %d\n",
+		     (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_MASK)
+		     >> ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_SHIFT,
+		     (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_MASK)
+		     >> ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_SHIFT,
+		     (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_SUBMINOR_VERSION_MASK),
+		     (ctrl_ver & ENA_REGS_CONTROLLER_VERSION_IMPL_ID_MASK) >>
+		     ENA_REGS_CONTROLLER_VERSION_IMPL_ID_SHIFT);
+
+	ctrl_ver_masked =
+		(ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_MASK) |
+		(ctrl_ver & ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_MASK) |
+		(ctrl_ver & ENA_REGS_CONTROLLER_VERSION_SUBMINOR_VERSION_MASK);
+
+	/* Validate the ctrl version without the implementation ID */
+	if (ctrl_ver_masked < MIN_ENA_CTRL_VER) {
+		ena_trc_err("ENA ctrl version is lower than the minimal ctrl version the driver supports\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+void ena_com_admin_destroy(struct ena_com_dev *ena_dev)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	struct ena_com_admin_cq *cq = &admin_queue->cq;
+	struct ena_com_admin_sq *sq = &admin_queue->sq;
+	struct ena_com_aenq *aenq = &ena_dev->aenq;
+	u16 size;
+
+	ENA_WAIT_EVENT_DESTROY(admin_queue->comp_ctx->wait_event);
+
+	ENA_SPINLOCK_DESTROY(admin_queue->q_lock);
+
+	if (admin_queue->comp_ctx)
+		ENA_MEM_FREE(ena_dev->dmadev, admin_queue->comp_ctx);
+
+	admin_queue->comp_ctx = NULL;
+	size = ADMIN_SQ_SIZE(admin_queue->q_depth);
+	if (sq->entries)
+		ENA_MEM_FREE_COHERENT(ena_dev->dmadev, size, sq->entries,
+				      sq->dma_addr, sq->mem_handle);
+	sq->entries = NULL;
+
+	size = ADMIN_CQ_SIZE(admin_queue->q_depth);
+	if (cq->entries)
+		ENA_MEM_FREE_COHERENT(ena_dev->dmadev, size, cq->entries,
+				      cq->dma_addr, cq->mem_handle);
+	cq->entries = NULL;
+
+	size = ADMIN_AENQ_SIZE(aenq->q_depth);
+	if (ena_dev->aenq.entries)
+		ENA_MEM_FREE_COHERENT(ena_dev->dmadev, size, aenq->entries,
+				      aenq->dma_addr, aenq->mem_handle);
+	aenq->entries = NULL;
+}
+
+void ena_com_set_admin_polling_mode(struct ena_com_dev *ena_dev, bool polling)
+{
+	ena_dev->admin_queue.polling = polling;
+}
+
+int ena_com_mmio_reg_read_request_init(struct ena_com_dev *ena_dev)
+{
+	struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
+
+	ENA_SPINLOCK_INIT(mmio_read->lock);
+	ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+			       sizeof(*mmio_read->read_resp),
+			       mmio_read->read_resp,
+			       mmio_read->read_resp_dma_addr,
+			       mmio_read->read_resp_mem_handle);
+	if (unlikely(!mmio_read->read_resp))
+		return ENA_COM_NO_MEM;
+
+	ena_com_mmio_reg_read_request_write_dev_addr(ena_dev);
+
+	mmio_read->read_resp->req_id = 0x0;
+	mmio_read->seq_num = 0x0;
+	mmio_read->readless_supported = true;
+
+	return 0;
+}
+
+void ena_com_set_mmio_read_mode(struct ena_com_dev *ena_dev, bool readless_supported)
+{
+	struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
+
+	mmio_read->readless_supported = readless_supported;
+}
+
+void ena_com_mmio_reg_read_request_destroy(struct ena_com_dev *ena_dev)
+{
+	struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
+
+	ENA_REG_WRITE32(ena_dev->bus, 0x0, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_LO_OFF);
+	ENA_REG_WRITE32(ena_dev->bus, 0x0, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_HI_OFF);
+
+	ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
+			      sizeof(*mmio_read->read_resp),
+			      mmio_read->read_resp,
+			      mmio_read->read_resp_dma_addr,
+			      mmio_read->read_resp_mem_handle);
+
+	mmio_read->read_resp = NULL;
+
+	ENA_SPINLOCK_DESTROY(mmio_read->lock);
+}
+
+void ena_com_mmio_reg_read_request_write_dev_addr(struct ena_com_dev *ena_dev)
+{
+	struct ena_com_mmio_read *mmio_read = &ena_dev->mmio_read;
+	u32 addr_low, addr_high;
+
+	addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(mmio_read->read_resp_dma_addr);
+	addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(mmio_read->read_resp_dma_addr);
+
+	ENA_REG_WRITE32(ena_dev->bus, addr_low, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_LO_OFF);
+	ENA_REG_WRITE32(ena_dev->bus, addr_high, ena_dev->reg_bar + ENA_REGS_MMIO_RESP_HI_OFF);
+}
+
+int ena_com_admin_init(struct ena_com_dev *ena_dev,
+		       struct ena_aenq_handlers *aenq_handlers,
+		       bool init_spinlock)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	u32 aq_caps, acq_caps, dev_sts, addr_low, addr_high;
+	int ret;
+
+#ifdef ENA_INTERNAL
+	ena_trc_info("ena_defs : Version:[%s] Build date [%s]",
+		     ENA_GEN_COMMIT, ENA_GEN_DATE);
+#endif
+	dev_sts = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF);
+
+	if (unlikely(dev_sts == ENA_MMIO_READ_TIMEOUT)) {
+		ena_trc_err("Reg read timeout occurred\n");
+		return ENA_COM_TIMER_EXPIRED;
+	}
+
+	if (!(dev_sts & ENA_REGS_DEV_STS_READY_MASK)) {
+		ena_trc_err("Device isn't ready, abort com init\n");
+		return ENA_COM_NO_DEVICE;
+	}
+
+	admin_queue->q_depth = ENA_ADMIN_QUEUE_DEPTH;
+
+	admin_queue->bus = ena_dev->bus;
+	admin_queue->q_dmadev = ena_dev->dmadev;
+	admin_queue->polling = false;
+	admin_queue->curr_cmd_id = 0;
+
+	ATOMIC32_SET(&admin_queue->outstanding_cmds, 0);
+
+	if (init_spinlock)
+		ENA_SPINLOCK_INIT(admin_queue->q_lock);
+
+	ret = ena_com_init_comp_ctxt(admin_queue);
+	if (ret)
+		goto error;
+
+	ret = ena_com_admin_init_sq(admin_queue);
+	if (ret)
+		goto error;
+
+	ret = ena_com_admin_init_cq(admin_queue);
+	if (ret)
+		goto error;
+
+	admin_queue->sq.db_addr = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
+		ENA_REGS_AQ_DB_OFF);
+
+	addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(admin_queue->sq.dma_addr);
+	addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(admin_queue->sq.dma_addr);
+
+	ENA_REG_WRITE32(ena_dev->bus, addr_low, ena_dev->reg_bar + ENA_REGS_AQ_BASE_LO_OFF);
+	ENA_REG_WRITE32(ena_dev->bus, addr_high, ena_dev->reg_bar + ENA_REGS_AQ_BASE_HI_OFF);
+
+	addr_low = ENA_DMA_ADDR_TO_UINT32_LOW(admin_queue->cq.dma_addr);
+	addr_high = ENA_DMA_ADDR_TO_UINT32_HIGH(admin_queue->cq.dma_addr);
+
+	ENA_REG_WRITE32(ena_dev->bus, addr_low, ena_dev->reg_bar + ENA_REGS_ACQ_BASE_LO_OFF);
+	ENA_REG_WRITE32(ena_dev->bus, addr_high, ena_dev->reg_bar + ENA_REGS_ACQ_BASE_HI_OFF);
+
+	aq_caps = 0;
+	aq_caps |= admin_queue->q_depth & ENA_REGS_AQ_CAPS_AQ_DEPTH_MASK;
+	aq_caps |= (sizeof(struct ena_admin_aq_entry) <<
+			ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_SHIFT) &
+			ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_MASK;
+
+	acq_caps = 0;
+	acq_caps |= admin_queue->q_depth & ENA_REGS_ACQ_CAPS_ACQ_DEPTH_MASK;
+	acq_caps |= (sizeof(struct ena_admin_acq_entry) <<
+		ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_SHIFT) &
+		ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_MASK;
+
+	ENA_REG_WRITE32(ena_dev->bus, aq_caps, ena_dev->reg_bar + ENA_REGS_AQ_CAPS_OFF);
+	ENA_REG_WRITE32(ena_dev->bus, acq_caps, ena_dev->reg_bar + ENA_REGS_ACQ_CAPS_OFF);
+	ret = ena_com_admin_init_aenq(ena_dev, aenq_handlers);
+	if (ret)
+		goto error;
+
+	admin_queue->running_state = true;
+
+	return 0;
+error:
+	ena_com_admin_destroy(ena_dev);
+
+	return ret;
+}
+
+int ena_com_create_io_queue(struct ena_com_dev *ena_dev,
+			    struct ena_com_create_io_ctx *ctx)
+{
+	struct ena_com_io_sq *io_sq;
+	struct ena_com_io_cq *io_cq;
+	int ret;
+
+	if (ctx->qid >= ENA_TOTAL_NUM_QUEUES) {
+		ena_trc_err("Qid (%d) is bigger than max num of queues (%d)\n",
+			    ctx->qid, ENA_TOTAL_NUM_QUEUES);
+		return ENA_COM_INVAL;
+	}
+
+	io_sq = &ena_dev->io_sq_queues[ctx->qid];
+	io_cq = &ena_dev->io_cq_queues[ctx->qid];
+
+	memset(io_sq, 0x0, sizeof(*io_sq));
+	memset(io_cq, 0x0, sizeof(*io_cq));
+
+	/* Init CQ */
+	io_cq->q_depth = ctx->queue_size;
+	io_cq->direction = ctx->direction;
+	io_cq->qid = ctx->qid;
+
+	io_cq->msix_vector = ctx->msix_vector;
+
+	io_sq->q_depth = ctx->queue_size;
+	io_sq->direction = ctx->direction;
+	io_sq->qid = ctx->qid;
+
+	io_sq->mem_queue_type = ctx->mem_queue_type;
+
+	if (ctx->direction == ENA_COM_IO_QUEUE_DIRECTION_TX)
+		/* header length is limited to 8 bits */
+		io_sq->tx_max_header_size =
+			ENA_MIN32(ena_dev->tx_max_header_size, SZ_256);
+
+	ret = ena_com_init_io_sq(ena_dev, ctx, io_sq);
+	if (ret)
+		goto error;
+	ret = ena_com_init_io_cq(ena_dev, ctx, io_cq);
+	if (ret)
+		goto error;
+
+	ret = ena_com_create_io_cq(ena_dev, io_cq);
+	if (ret)
+		goto error;
+
+	ret = ena_com_create_io_sq(ena_dev, io_sq, io_cq->idx);
+	if (ret)
+		goto destroy_io_cq;
+
+	return 0;
+
+destroy_io_cq:
+	ena_com_destroy_io_cq(ena_dev, io_cq);
+error:
+	ena_com_io_queue_free(ena_dev, io_sq, io_cq);
+	return ret;
+}
+
+void ena_com_destroy_io_queue(struct ena_com_dev *ena_dev, u16 qid)
+{
+	struct ena_com_io_sq *io_sq;
+	struct ena_com_io_cq *io_cq;
+
+	if (qid >= ENA_TOTAL_NUM_QUEUES) {
+		ena_trc_err("Qid (%d) is bigger than max num of queues (%d)\n",
+			    qid, ENA_TOTAL_NUM_QUEUES);
+		return;
+	}
+
+	io_sq = &ena_dev->io_sq_queues[qid];
+	io_cq = &ena_dev->io_cq_queues[qid];
+
+	ena_com_destroy_io_sq(ena_dev, io_sq);
+	ena_com_destroy_io_cq(ena_dev, io_cq);
+
+	ena_com_io_queue_free(ena_dev, io_sq, io_cq);
+}
+
+int ena_com_get_link_params(struct ena_com_dev *ena_dev,
+			    struct ena_admin_get_feat_resp *resp)
+{
+	return ena_com_get_feature(ena_dev, resp, ENA_ADMIN_LINK_CONFIG);
+}
+
+int ena_com_get_dev_attr_feat(struct ena_com_dev *ena_dev,
+			      struct ena_com_dev_get_features_ctx *get_feat_ctx)
+{
+	struct ena_admin_get_feat_resp get_resp;
+	int rc;
+
+	rc = ena_com_get_feature(ena_dev, &get_resp,
+				 ENA_ADMIN_DEVICE_ATTRIBUTES);
+	if (rc)
+		return rc;
+
+	memcpy(&get_feat_ctx->dev_attr, &get_resp.u.dev_attr,
+	       sizeof(get_resp.u.dev_attr));
+	ena_dev->supported_features = get_resp.u.dev_attr.supported_features;
+
+	rc = ena_com_get_feature(ena_dev, &get_resp,
+				 ENA_ADMIN_MAX_QUEUES_NUM);
+	if (rc)
+		return rc;
+
+	memcpy(&get_feat_ctx->max_queues, &get_resp.u.max_queue,
+	       sizeof(get_resp.u.max_queue));
+	ena_dev->tx_max_header_size = get_resp.u.max_queue.max_header_size;
+
+	rc = ena_com_get_feature(ena_dev, &get_resp,
+				 ENA_ADMIN_AENQ_CONFIG);
+	if (rc)
+		return rc;
+
+	memcpy(&get_feat_ctx->aenq, &get_resp.u.aenq,
+	       sizeof(get_resp.u.aenq));
+
+	rc = ena_com_get_feature(ena_dev, &get_resp,
+				 ENA_ADMIN_STATELESS_OFFLOAD_CONFIG);
+	if (rc)
+		return rc;
+
+	memcpy(&get_feat_ctx->offload, &get_resp.u.offload,
+	       sizeof(get_resp.u.offload));
+
+	/* Driver hints isn't mandatory admin command. So in case the
+	 * command isn't supported set driver hints to 0
+	 */
+	rc = ena_com_get_feature(ena_dev, &get_resp, ENA_ADMIN_HW_HINTS);
+
+	if (!rc)
+		memcpy(&get_feat_ctx->hw_hints, &get_resp.u.hw_hints,
+		       sizeof(get_resp.u.hw_hints));
+	else if (rc == ENA_COM_PERMISSION)
+		memset(&get_feat_ctx->hw_hints, 0x0, sizeof(get_feat_ctx->hw_hints));
+	else
+		return rc;
+
+	return 0;
+}
+
+void ena_com_admin_q_comp_intr_handler(struct ena_com_dev *ena_dev)
+{
+	ena_com_handle_admin_completion(&ena_dev->admin_queue);
+}
+
+/* ena_handle_specific_aenq_event:
+ * return the handler that is relevant to the specific event group
+ */
+static ena_aenq_handler ena_com_get_specific_aenq_cb(struct ena_com_dev *dev,
+						     u16 group)
+{
+	struct ena_aenq_handlers *aenq_handlers = dev->aenq.aenq_handlers;
+
+	if ((group < ENA_MAX_HANDLERS) && aenq_handlers->handlers[group])
+		return aenq_handlers->handlers[group];
+
+	return aenq_handlers->unimplemented_handler;
+}
+
+/* ena_aenq_intr_handler:
+ * handles the aenq incoming events.
+ * pop events from the queue and apply the specific handler
+ */
+void ena_com_aenq_intr_handler(struct ena_com_dev *dev, void *data)
+{
+	struct ena_admin_aenq_entry *aenq_e;
+	struct ena_admin_aenq_common_desc *aenq_common;
+	struct ena_com_aenq *aenq  = &dev->aenq;
+	ena_aenq_handler handler_cb;
+	u16 masked_head, processed = 0;
+	u8 phase;
+
+	masked_head = aenq->head & (aenq->q_depth - 1);
+	phase = aenq->phase;
+	aenq_e = &aenq->entries[masked_head]; /* Get first entry */
+	aenq_common = &aenq_e->aenq_common_desc;
+
+	/* Go over all the events */
+	while ((aenq_common->flags & ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK) ==
+		phase) {
+		ena_trc_dbg("AENQ! Group[%x] Syndrom[%x] timestamp: [%jus]\n",
+			    aenq_common->group,
+			    aenq_common->syndrom,
+			    (u64)aenq_common->timestamp_low +
+			    ((u64)aenq_common->timestamp_high << 32));
+
+		/* Handle specific event*/
+		handler_cb = ena_com_get_specific_aenq_cb(dev,
+							  aenq_common->group);
+		handler_cb(data, aenq_e); /* call the actual event handler*/
+
+		/* Get next event entry */
+		masked_head++;
+		processed++;
+
+		if (unlikely(masked_head == aenq->q_depth)) {
+			masked_head = 0;
+			phase = !phase;
+		}
+		aenq_e = &aenq->entries[masked_head];
+		aenq_common = &aenq_e->aenq_common_desc;
+	}
+
+	aenq->head += processed;
+	aenq->phase = phase;
+
+	/* Don't update aenq doorbell if there weren't any processed events */
+	if (!processed)
+		return;
+
+	/* write the aenq doorbell after all AENQ descriptors were read */
+	mb();
+	ENA_REG_WRITE32(dev->bus, (u32)aenq->head, dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF);
+}
+
+int ena_com_dev_reset(struct ena_com_dev *ena_dev)
+{
+	u32 stat, timeout, cap, reset_val;
+	int rc;
+
+	stat = ena_com_reg_bar_read32(ena_dev, ENA_REGS_DEV_STS_OFF);
+	cap = ena_com_reg_bar_read32(ena_dev, ENA_REGS_CAPS_OFF);
+
+	if (unlikely((stat == ENA_MMIO_READ_TIMEOUT) ||
+		     (cap == ENA_MMIO_READ_TIMEOUT))) {
+		ena_trc_err("Reg read32 timeout occurred\n");
+		return ENA_COM_TIMER_EXPIRED;
+	}
+
+	if ((stat & ENA_REGS_DEV_STS_READY_MASK) == 0) {
+		ena_trc_err("Device isn't ready, can't reset device\n");
+		return ENA_COM_INVAL;
+	}
+
+	timeout = (cap & ENA_REGS_CAPS_RESET_TIMEOUT_MASK) >>
+			ENA_REGS_CAPS_RESET_TIMEOUT_SHIFT;
+	if (timeout == 0) {
+		ena_trc_err("Invalid timeout value\n");
+		return ENA_COM_INVAL;
+	}
+
+	/* start reset */
+	reset_val = ENA_REGS_DEV_CTL_DEV_RESET_MASK;
+	ENA_REG_WRITE32(ena_dev->bus, reset_val, ena_dev->reg_bar + ENA_REGS_DEV_CTL_OFF);
+
+	/* Write again the MMIO read request address */
+	ena_com_mmio_reg_read_request_write_dev_addr(ena_dev);
+
+	rc = wait_for_reset_state(ena_dev, timeout,
+				  ENA_REGS_DEV_STS_RESET_IN_PROGRESS_MASK);
+	if (rc != 0) {
+		ena_trc_err("Reset indication didn't turn on\n");
+		return rc;
+	}
+
+	/* reset done */
+	ENA_REG_WRITE32(ena_dev->bus, 0, ena_dev->reg_bar + ENA_REGS_DEV_CTL_OFF);
+	rc = wait_for_reset_state(ena_dev, timeout, 0);
+	if (rc != 0) {
+		ena_trc_err("Reset indication didn't turn off\n");
+		return rc;
+	}
+
+	timeout = (cap & ENA_REGS_CAPS_ADMIN_CMD_TO_MASK) >>
+		ENA_REGS_CAPS_ADMIN_CMD_TO_SHIFT;
+	if (timeout)
+		/* the resolution of timeout reg is 100ms */
+		ena_dev->admin_queue.completion_timeout = timeout * 100000;
+	else
+		ena_dev->admin_queue.completion_timeout = ADMIN_CMD_TIMEOUT_US;
+
+	return 0;
+}
+
+static int ena_get_dev_stats(struct ena_com_dev *ena_dev,
+			     struct ena_com_stats_ctx *ctx,
+			     enum ena_admin_get_stats_type type)
+{
+	struct ena_admin_aq_get_stats_cmd *get_cmd = &ctx->get_cmd;
+	struct ena_admin_acq_get_stats_resp *get_resp = &ctx->get_resp;
+	struct ena_com_admin_queue *admin_queue;
+	int ret;
+
+	admin_queue = &ena_dev->admin_queue;
+
+	get_cmd->aq_common_descriptor.opcode = ENA_ADMIN_GET_STATS;
+	get_cmd->aq_common_descriptor.flags = 0;
+	get_cmd->type = type;
+
+	ret =  ena_com_execute_admin_command(admin_queue,
+					     (struct ena_admin_aq_entry *)get_cmd,
+					     sizeof(*get_cmd),
+					     (struct ena_admin_acq_entry *)get_resp,
+					     sizeof(*get_resp));
+
+	if (unlikely(ret))
+		ena_trc_err("Failed to get stats. error: %d\n", ret);
+
+	return ret;
+}
+
+int ena_com_get_dev_basic_stats(struct ena_com_dev *ena_dev,
+				struct ena_admin_basic_stats *stats)
+{
+	struct ena_com_stats_ctx ctx;
+	int ret;
+
+	memset(&ctx, 0x0, sizeof(ctx));
+	ret = ena_get_dev_stats(ena_dev, &ctx, ENA_ADMIN_GET_STATS_TYPE_BASIC);
+	if (likely(ret == 0))
+		memcpy(stats, &ctx.get_resp.basic_stats,
+		       sizeof(ctx.get_resp.basic_stats));
+
+	return ret;
+}
+
+int ena_com_set_dev_mtu(struct ena_com_dev *ena_dev, int mtu)
+{
+	struct ena_com_admin_queue *admin_queue;
+	struct ena_admin_set_feat_cmd cmd;
+	struct ena_admin_set_feat_resp resp;
+	int ret;
+
+	if (!ena_com_check_supported_feature_id(ena_dev, ENA_ADMIN_MTU)) {
+		ena_trc_dbg("Feature %d isn't supported\n", ENA_ADMIN_MTU);
+		return ENA_COM_PERMISSION;
+	}
+
+	memset(&cmd, 0x0, sizeof(cmd));
+	admin_queue = &ena_dev->admin_queue;
+
+	cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
+	cmd.aq_common_descriptor.flags = 0;
+	cmd.feat_common.feature_id = ENA_ADMIN_MTU;
+	cmd.u.mtu.mtu = mtu;
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&cmd,
+					    sizeof(cmd),
+					    (struct ena_admin_acq_entry *)&resp,
+					    sizeof(resp));
+
+	if (unlikely(ret))
+		ena_trc_err("Failed to set mtu %d. error: %d\n", mtu, ret);
+
+	return ret;
+}
+
+int ena_com_get_offload_settings(struct ena_com_dev *ena_dev,
+				 struct ena_admin_feature_offload_desc *offload)
+{
+	int ret;
+	struct ena_admin_get_feat_resp resp;
+
+	ret = ena_com_get_feature(ena_dev, &resp,
+				  ENA_ADMIN_STATELESS_OFFLOAD_CONFIG);
+	if (unlikely(ret)) {
+		ena_trc_err("Failed to get offload capabilities %d\n", ret);
+		return ret;
+	}
+
+	memcpy(offload, &resp.u.offload, sizeof(resp.u.offload));
+
+	return 0;
+}
+
+int ena_com_set_hash_function(struct ena_com_dev *ena_dev)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_set_feat_cmd cmd;
+	struct ena_admin_set_feat_resp resp;
+	struct ena_admin_get_feat_resp get_resp;
+	int ret;
+
+	if (!ena_com_check_supported_feature_id(ena_dev,
+						ENA_ADMIN_RSS_HASH_FUNCTION)) {
+		ena_trc_dbg("Feature %d isn't supported\n",
+			    ENA_ADMIN_RSS_HASH_FUNCTION);
+		return ENA_COM_PERMISSION;
+	}
+
+	/* Validate hash function is supported */
+	ret = ena_com_get_feature(ena_dev, &get_resp,
+				  ENA_ADMIN_RSS_HASH_FUNCTION);
+	if (unlikely(ret))
+		return ret;
+
+	if (get_resp.u.flow_hash_func.supported_func & (1 << rss->hash_func)) {
+		ena_trc_err("Func hash %d isn't supported by device, abort\n",
+			    rss->hash_func);
+		return ENA_COM_PERMISSION;
+	}
+
+	memset(&cmd, 0x0, sizeof(cmd));
+
+	cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
+	cmd.aq_common_descriptor.flags =
+		ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
+	cmd.feat_common.feature_id = ENA_ADMIN_RSS_HASH_FUNCTION;
+	cmd.u.flow_hash_func.init_val = rss->hash_init_val;
+	cmd.u.flow_hash_func.selected_func = 1 << rss->hash_func;
+
+	ret = ena_com_mem_addr_set(ena_dev,
+				   &cmd.control_buffer.address,
+				   rss->hash_key_dma_addr);
+	if (unlikely(ret)) {
+		ena_trc_err("memory address set failed\n");
+		return ret;
+	}
+
+	cmd.control_buffer.length = sizeof(*rss->hash_key);
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&cmd,
+					    sizeof(cmd),
+					    (struct ena_admin_acq_entry *)&resp,
+					    sizeof(resp));
+	if (unlikely(ret)) {
+		ena_trc_err("Failed to set hash function %d. error: %d\n",
+			    rss->hash_func, ret);
+		return ENA_COM_INVAL;
+	}
+
+	return 0;
+}
+
+int ena_com_fill_hash_function(struct ena_com_dev *ena_dev,
+			       enum ena_admin_hash_functions func,
+			       const u8 *key, u16 key_len, u32 init_val)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_get_feat_resp get_resp;
+	struct ena_admin_feature_rss_flow_hash_control *hash_key =
+		rss->hash_key;
+	int rc;
+
+	/* Make sure size is a mult of DWs */
+	if (unlikely(key_len & 0x3))
+		return ENA_COM_INVAL;
+
+	rc = ena_com_get_feature_ex(ena_dev, &get_resp,
+				    ENA_ADMIN_RSS_HASH_FUNCTION,
+				    rss->hash_key_dma_addr,
+				    sizeof(*rss->hash_key));
+	if (unlikely(rc))
+		return rc;
+
+	if (!((1 << func) & get_resp.u.flow_hash_func.supported_func)) {
+		ena_trc_err("Flow hash function %d isn't supported\n", func);
+		return ENA_COM_PERMISSION;
+	}
+
+	switch (func) {
+	case ENA_ADMIN_TOEPLITZ:
+		if (key_len > sizeof(hash_key->key)) {
+			ena_trc_err("key len (%hu) is bigger than the max supported (%zu)\n",
+				    key_len, sizeof(hash_key->key));
+			return ENA_COM_INVAL;
+		}
+
+		memcpy(hash_key->key, key, key_len);
+		rss->hash_init_val = init_val;
+		hash_key->keys_num = key_len >> 2;
+		break;
+	case ENA_ADMIN_CRC32:
+		rss->hash_init_val = init_val;
+		break;
+	default:
+		ena_trc_err("Invalid hash function (%d)\n", func);
+		return ENA_COM_INVAL;
+	}
+
+	rc = ena_com_set_hash_function(ena_dev);
+
+	/* Restore the old function */
+	if (unlikely(rc))
+		ena_com_get_hash_function(ena_dev, NULL, NULL);
+
+	return rc;
+}
+
+int ena_com_get_hash_function(struct ena_com_dev *ena_dev,
+			      enum ena_admin_hash_functions *func,
+			      u8 *key)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_get_feat_resp get_resp;
+	struct ena_admin_feature_rss_flow_hash_control *hash_key =
+		rss->hash_key;
+	int rc;
+
+	rc = ena_com_get_feature_ex(ena_dev, &get_resp,
+				    ENA_ADMIN_RSS_HASH_FUNCTION,
+				    rss->hash_key_dma_addr,
+				    sizeof(*rss->hash_key));
+	if (unlikely(rc))
+		return rc;
+
+	rss->hash_func = get_resp.u.flow_hash_func.selected_func;
+	if (func)
+		*func = rss->hash_func;
+
+	if (key)
+		memcpy(key, hash_key->key, (size_t)(hash_key->keys_num) << 2);
+
+	return 0;
+}
+
+int ena_com_get_hash_ctrl(struct ena_com_dev *ena_dev,
+			  enum ena_admin_flow_hash_proto proto,
+			  u16 *fields)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_get_feat_resp get_resp;
+	int rc;
+
+	rc = ena_com_get_feature_ex(ena_dev, &get_resp,
+				    ENA_ADMIN_RSS_HASH_INPUT,
+				    rss->hash_ctrl_dma_addr,
+				    sizeof(*rss->hash_ctrl));
+	if (unlikely(rc))
+		return rc;
+
+	if (fields)
+		*fields = rss->hash_ctrl->selected_fields[proto].fields;
+
+	return 0;
+}
+
+int ena_com_set_hash_ctrl(struct ena_com_dev *ena_dev)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_feature_rss_hash_control *hash_ctrl = rss->hash_ctrl;
+	struct ena_admin_set_feat_cmd cmd;
+	struct ena_admin_set_feat_resp resp;
+	int ret;
+
+	if (!ena_com_check_supported_feature_id(ena_dev,
+						ENA_ADMIN_RSS_HASH_INPUT)) {
+		ena_trc_dbg("Feature %d isn't supported\n",
+			    ENA_ADMIN_RSS_HASH_INPUT);
+		return ENA_COM_PERMISSION;
+	}
+
+	memset(&cmd, 0x0, sizeof(cmd));
+
+	cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
+	cmd.aq_common_descriptor.flags =
+		ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
+	cmd.feat_common.feature_id = ENA_ADMIN_RSS_HASH_INPUT;
+	cmd.u.flow_hash_input.enabled_input_sort =
+		ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L3_SORT_MASK |
+		ENA_ADMIN_FEATURE_RSS_FLOW_HASH_INPUT_L4_SORT_MASK;
+
+	ret = ena_com_mem_addr_set(ena_dev,
+				   &cmd.control_buffer.address,
+				   rss->hash_ctrl_dma_addr);
+	if (unlikely(ret)) {
+		ena_trc_err("memory address set failed\n");
+		return ret;
+	}
+	cmd.control_buffer.length = sizeof(*hash_ctrl);
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&cmd,
+					    sizeof(cmd),
+					    (struct ena_admin_acq_entry *)&resp,
+					    sizeof(resp));
+	if (unlikely(ret))
+		ena_trc_err("Failed to set hash input. error: %d\n", ret);
+
+	return ret;
+}
+
+int ena_com_set_default_hash_ctrl(struct ena_com_dev *ena_dev)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_feature_rss_hash_control *hash_ctrl =
+		rss->hash_ctrl;
+	u16 available_fields = 0;
+	int rc, i;
+
+	/* Get the supported hash input */
+	rc = ena_com_get_hash_ctrl(ena_dev, 0, NULL);
+	if (unlikely(rc))
+		return rc;
+
+	hash_ctrl->selected_fields[ENA_ADMIN_RSS_TCP4].fields =
+		ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA |
+		ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP;
+
+	hash_ctrl->selected_fields[ENA_ADMIN_RSS_UDP4].fields =
+		ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA |
+		ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP;
+
+	hash_ctrl->selected_fields[ENA_ADMIN_RSS_TCP6].fields =
+		ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA |
+		ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP;
+
+	hash_ctrl->selected_fields[ENA_ADMIN_RSS_UDP6].fields =
+		ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA |
+		ENA_ADMIN_RSS_L4_DP | ENA_ADMIN_RSS_L4_SP;
+
+	hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP4].fields =
+		ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA;
+
+	hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP6].fields =
+		ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA;
+
+	hash_ctrl->selected_fields[ENA_ADMIN_RSS_IP4_FRAG].fields =
+		ENA_ADMIN_RSS_L3_SA | ENA_ADMIN_RSS_L3_DA;
+
+	hash_ctrl->selected_fields[ENA_ADMIN_RSS_NOT_IP].fields =
+		ENA_ADMIN_RSS_L2_DA | ENA_ADMIN_RSS_L2_SA;
+
+	for (i = 0; i < ENA_ADMIN_RSS_PROTO_NUM; i++) {
+		available_fields = hash_ctrl->selected_fields[i].fields &
+				hash_ctrl->supported_fields[i].fields;
+		if (available_fields != hash_ctrl->selected_fields[i].fields) {
+			ena_trc_err("hash control doesn't support all the desire configuration. proto %x supported %x selected %x\n",
+				    i, hash_ctrl->supported_fields[i].fields,
+				    hash_ctrl->selected_fields[i].fields);
+			return ENA_COM_PERMISSION;
+		}
+	}
+
+	rc = ena_com_set_hash_ctrl(ena_dev);
+
+	/* In case of failure, restore the old hash ctrl */
+	if (unlikely(rc))
+		ena_com_get_hash_ctrl(ena_dev, 0, NULL);
+
+	return rc;
+}
+
+int ena_com_fill_hash_ctrl(struct ena_com_dev *ena_dev,
+			   enum ena_admin_flow_hash_proto proto,
+			   u16 hash_fields)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_feature_rss_hash_control *hash_ctrl = rss->hash_ctrl;
+	u16 supported_fields;
+	int rc;
+
+	if (proto >= ENA_ADMIN_RSS_PROTO_NUM) {
+		ena_trc_err("Invalid proto num (%u)\n", proto);
+		return ENA_COM_INVAL;
+	}
+
+	/* Get the ctrl table */
+	rc = ena_com_get_hash_ctrl(ena_dev, proto, NULL);
+	if (unlikely(rc))
+		return rc;
+
+	/* Make sure all the fields are supported */
+	supported_fields = hash_ctrl->supported_fields[proto].fields;
+	if ((hash_fields & supported_fields) != hash_fields) {
+		ena_trc_err("proto %d doesn't support the required fields %x. supports only: %x\n",
+			    proto, hash_fields, supported_fields);
+	}
+
+	hash_ctrl->selected_fields[proto].fields = hash_fields;
+
+	rc = ena_com_set_hash_ctrl(ena_dev);
+
+	/* In case of failure, restore the old hash ctrl */
+	if (unlikely(rc))
+		ena_com_get_hash_ctrl(ena_dev, 0, NULL);
+
+	return 0;
+}
+
+int ena_com_indirect_table_fill_entry(struct ena_com_dev *ena_dev,
+				      u16 entry_idx, u16 entry_value)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+
+	if (unlikely(entry_idx >= (1 << rss->tbl_log_size)))
+		return ENA_COM_INVAL;
+
+	if (unlikely((entry_value > ENA_TOTAL_NUM_QUEUES)))
+		return ENA_COM_INVAL;
+
+	rss->host_rss_ind_tbl[entry_idx] = entry_value;
+
+	return 0;
+}
+
+int ena_com_indirect_table_set(struct ena_com_dev *ena_dev)
+{
+	struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue;
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_set_feat_cmd cmd;
+	struct ena_admin_set_feat_resp resp;
+	int ret;
+
+	if (!ena_com_check_supported_feature_id(ena_dev,
+						ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG)) {
+		ena_trc_dbg("Feature %d isn't supported\n",
+			    ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG);
+		return ENA_COM_PERMISSION;
+	}
+
+	ret = ena_com_ind_tbl_convert_to_device(ena_dev);
+	if (ret) {
+		ena_trc_err("Failed to convert host indirection table to device table\n");
+		return ret;
+	}
+
+	memset(&cmd, 0x0, sizeof(cmd));
+
+	cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
+	cmd.aq_common_descriptor.flags =
+		ENA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
+	cmd.feat_common.feature_id = ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG;
+	cmd.u.ind_table.size = rss->tbl_log_size;
+	cmd.u.ind_table.inline_index = 0xFFFFFFFF;
+
+	ret = ena_com_mem_addr_set(ena_dev,
+				   &cmd.control_buffer.address,
+				   rss->rss_ind_tbl_dma_addr);
+	if (unlikely(ret)) {
+		ena_trc_err("memory address set failed\n");
+		return ret;
+	}
+
+	cmd.control_buffer.length = (1ULL << rss->tbl_log_size) *
+		sizeof(struct ena_admin_rss_ind_table_entry);
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&cmd,
+					    sizeof(cmd),
+					    (struct ena_admin_acq_entry *)&resp,
+					    sizeof(resp));
+
+	if (unlikely(ret))
+		ena_trc_err("Failed to set indirect table. error: %d\n", ret);
+
+	return ret;
+}
+
+int ena_com_indirect_table_get(struct ena_com_dev *ena_dev, u32 *ind_tbl)
+{
+	struct ena_rss *rss = &ena_dev->rss;
+	struct ena_admin_get_feat_resp get_resp;
+	u32 tbl_size;
+	int i, rc;
+
+	tbl_size = (1ULL << rss->tbl_log_size) *
+		sizeof(struct ena_admin_rss_ind_table_entry);
+
+	rc = ena_com_get_feature_ex(ena_dev, &get_resp,
+				    ENA_ADMIN_RSS_REDIRECTION_TABLE_CONFIG,
+				    rss->rss_ind_tbl_dma_addr,
+				    tbl_size);
+	if (unlikely(rc))
+		return rc;
+
+	if (!ind_tbl)
+		return 0;
+
+	rc = ena_com_ind_tbl_convert_from_device(ena_dev);
+	if (unlikely(rc))
+		return rc;
+
+	for (i = 0; i < (1 << rss->tbl_log_size); i++)
+		ind_tbl[i] = rss->host_rss_ind_tbl[i];
+
+	return 0;
+}
+
+int ena_com_rss_init(struct ena_com_dev *ena_dev, u16 indr_tbl_log_size)
+{
+	int rc;
+
+	memset(&ena_dev->rss, 0x0, sizeof(ena_dev->rss));
+
+	rc = ena_com_indirect_table_allocate(ena_dev, indr_tbl_log_size);
+	if (unlikely(rc))
+		goto err_indr_tbl;
+
+	rc = ena_com_hash_key_allocate(ena_dev);
+	if (unlikely(rc))
+		goto err_hash_key;
+
+	rc = ena_com_hash_ctrl_init(ena_dev);
+	if (unlikely(rc))
+		goto err_hash_ctrl;
+
+	return 0;
+
+err_hash_ctrl:
+	ena_com_hash_key_destroy(ena_dev);
+err_hash_key:
+	ena_com_indirect_table_destroy(ena_dev);
+err_indr_tbl:
+
+	return rc;
+}
+
+void ena_com_rss_destroy(struct ena_com_dev *ena_dev)
+{
+	ena_com_indirect_table_destroy(ena_dev);
+	ena_com_hash_key_destroy(ena_dev);
+	ena_com_hash_ctrl_destroy(ena_dev);
+
+	memset(&ena_dev->rss, 0x0, sizeof(ena_dev->rss));
+}
+
+int ena_com_allocate_host_info(struct ena_com_dev *ena_dev)
+{
+	struct ena_host_attribute *host_attr = &ena_dev->host_attr;
+
+	ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+			       SZ_4K,
+			       host_attr->host_info,
+			       host_attr->host_info_dma_addr,
+			       host_attr->host_info_dma_handle);
+	if (unlikely(!host_attr->host_info))
+		return ENA_COM_NO_MEM;
+
+	return 0;
+}
+
+int ena_com_allocate_debug_area(struct ena_com_dev *ena_dev,
+				u32 debug_area_size)
+{
+	struct ena_host_attribute *host_attr = &ena_dev->host_attr;
+
+	ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+			       debug_area_size,
+			       host_attr->debug_area_virt_addr,
+			       host_attr->debug_area_dma_addr,
+			       host_attr->debug_area_dma_handle);
+	if (unlikely(!host_attr->debug_area_virt_addr)) {
+		host_attr->debug_area_size = 0;
+		return ENA_COM_NO_MEM;
+	}
+
+	host_attr->debug_area_size = debug_area_size;
+
+	return 0;
+}
+
+void ena_com_delete_host_info(struct ena_com_dev *ena_dev)
+{
+	struct ena_host_attribute *host_attr = &ena_dev->host_attr;
+
+	if (host_attr->host_info) {
+		ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
+				      SZ_4K,
+				      host_attr->host_info,
+				      host_attr->host_info_dma_addr,
+				      host_attr->host_info_dma_handle);
+		host_attr->host_info = NULL;
+	}
+}
+
+void ena_com_delete_debug_area(struct ena_com_dev *ena_dev)
+{
+	struct ena_host_attribute *host_attr = &ena_dev->host_attr;
+
+	if (host_attr->debug_area_virt_addr) {
+		ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
+				      host_attr->debug_area_size,
+				      host_attr->debug_area_virt_addr,
+				      host_attr->debug_area_dma_addr,
+				      host_attr->debug_area_dma_handle);
+		host_attr->debug_area_virt_addr = NULL;
+	}
+}
+
+int ena_com_set_host_attributes(struct ena_com_dev *ena_dev)
+{
+	struct ena_host_attribute *host_attr = &ena_dev->host_attr;
+	struct ena_com_admin_queue *admin_queue;
+	struct ena_admin_set_feat_cmd cmd;
+	struct ena_admin_set_feat_resp resp;
+
+	int ret;
+
+	/* Host attribute config is called before ena_com_get_dev_attr_feat
+	 * so ena_com can't check if the feature is supported.
+	 */
+
+	memset(&cmd, 0x0, sizeof(cmd));
+	admin_queue = &ena_dev->admin_queue;
+
+	cmd.aq_common_descriptor.opcode = ENA_ADMIN_SET_FEATURE;
+	cmd.feat_common.feature_id = ENA_ADMIN_HOST_ATTR_CONFIG;
+
+	ret = ena_com_mem_addr_set(ena_dev,
+				   &cmd.u.host_attr.debug_ba,
+				   host_attr->debug_area_dma_addr);
+	if (unlikely(ret)) {
+		ena_trc_err("memory address set failed\n");
+		return ret;
+	}
+
+	ret = ena_com_mem_addr_set(ena_dev,
+				   &cmd.u.host_attr.os_info_ba,
+				   host_attr->host_info_dma_addr);
+	if (unlikely(ret)) {
+		ena_trc_err("memory address set failed\n");
+		return ret;
+	}
+
+	cmd.u.host_attr.debug_area_size = host_attr->debug_area_size;
+
+	ret = ena_com_execute_admin_command(admin_queue,
+					    (struct ena_admin_aq_entry *)&cmd,
+					    sizeof(cmd),
+					    (struct ena_admin_acq_entry *)&resp,
+					    sizeof(resp));
+
+	if (unlikely(ret))
+		ena_trc_err("Failed to set host attributes: %d\n", ret);
+
+	return ret;
+}
+
+/* Interrupt moderation */
+bool ena_com_interrupt_moderation_supported(struct ena_com_dev *ena_dev)
+{
+	return ena_com_check_supported_feature_id(ena_dev,
+						  ENA_ADMIN_INTERRUPT_MODERATION);
+}
+
+int ena_com_update_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev,
+						      u32 tx_coalesce_usecs)
+{
+	if (!ena_dev->intr_delay_resolution) {
+		ena_trc_err("Illegal interrupt delay granularity value\n");
+		return ENA_COM_FAULT;
+	}
+
+	ena_dev->intr_moder_tx_interval = tx_coalesce_usecs /
+		ena_dev->intr_delay_resolution;
+
+	return 0;
+}
+
+int ena_com_update_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev,
+						      u32 rx_coalesce_usecs)
+{
+	if (!ena_dev->intr_delay_resolution) {
+		ena_trc_err("Illegal interrupt delay granularity value\n");
+		return ENA_COM_FAULT;
+	}
+
+	/* We use LOWEST entry of moderation table for storing
+	 * nonadaptive interrupt coalescing values
+	 */
+	ena_dev->intr_moder_tbl[ENA_INTR_MODER_LOWEST].intr_moder_interval =
+		rx_coalesce_usecs / ena_dev->intr_delay_resolution;
+
+	return 0;
+}
+
+void ena_com_destroy_interrupt_moderation(struct ena_com_dev *ena_dev)
+{
+	if (ena_dev->intr_moder_tbl)
+		ENA_MEM_FREE(ena_dev->dmadev, ena_dev->intr_moder_tbl);
+	ena_dev->intr_moder_tbl = NULL;
+}
+
+int ena_com_init_interrupt_moderation(struct ena_com_dev *ena_dev)
+{
+	struct ena_admin_get_feat_resp get_resp;
+	u16 delay_resolution;
+	int rc;
+
+	rc = ena_com_get_feature(ena_dev, &get_resp,
+				 ENA_ADMIN_INTERRUPT_MODERATION);
+
+	if (rc) {
+		if (rc == ENA_COM_PERMISSION) {
+			ena_trc_dbg("Feature %d isn't supported\n",
+				    ENA_ADMIN_INTERRUPT_MODERATION);
+			rc = 0;
+		} else {
+			ena_trc_err("Failed to get interrupt moderation admin cmd. rc: %d\n",
+				    rc);
+		}
+
+		/* no moderation supported, disable adaptive support */
+		ena_com_disable_adaptive_moderation(ena_dev);
+		return rc;
+	}
+
+	rc = ena_com_init_interrupt_moderation_table(ena_dev);
+	if (rc)
+		goto err;
+
+	/* if moderation is supported by device we set adaptive moderation */
+	delay_resolution = get_resp.u.intr_moderation.intr_delay_resolution;
+	ena_com_update_intr_delay_resolution(ena_dev, delay_resolution);
+	ena_com_enable_adaptive_moderation(ena_dev);
+
+	return 0;
+err:
+	ena_com_destroy_interrupt_moderation(ena_dev);
+	return rc;
+}
+
+void ena_com_config_default_interrupt_moderation_table(struct ena_com_dev *ena_dev)
+{
+	struct ena_intr_moder_entry *intr_moder_tbl = ena_dev->intr_moder_tbl;
+
+	if (!intr_moder_tbl)
+		return;
+
+	intr_moder_tbl[ENA_INTR_MODER_LOWEST].intr_moder_interval =
+		ENA_INTR_LOWEST_USECS;
+	intr_moder_tbl[ENA_INTR_MODER_LOWEST].pkts_per_interval =
+		ENA_INTR_LOWEST_PKTS;
+	intr_moder_tbl[ENA_INTR_MODER_LOWEST].bytes_per_interval =
+		ENA_INTR_LOWEST_BYTES;
+
+	intr_moder_tbl[ENA_INTR_MODER_LOW].intr_moder_interval =
+		ENA_INTR_LOW_USECS;
+	intr_moder_tbl[ENA_INTR_MODER_LOW].pkts_per_interval =
+		ENA_INTR_LOW_PKTS;
+	intr_moder_tbl[ENA_INTR_MODER_LOW].bytes_per_interval =
+		ENA_INTR_LOW_BYTES;
+
+	intr_moder_tbl[ENA_INTR_MODER_MID].intr_moder_interval =
+		ENA_INTR_MID_USECS;
+	intr_moder_tbl[ENA_INTR_MODER_MID].pkts_per_interval =
+		ENA_INTR_MID_PKTS;
+	intr_moder_tbl[ENA_INTR_MODER_MID].bytes_per_interval =
+		ENA_INTR_MID_BYTES;
+
+	intr_moder_tbl[ENA_INTR_MODER_HIGH].intr_moder_interval =
+		ENA_INTR_HIGH_USECS;
+	intr_moder_tbl[ENA_INTR_MODER_HIGH].pkts_per_interval =
+		ENA_INTR_HIGH_PKTS;
+	intr_moder_tbl[ENA_INTR_MODER_HIGH].bytes_per_interval =
+		ENA_INTR_HIGH_BYTES;
+
+	intr_moder_tbl[ENA_INTR_MODER_HIGHEST].intr_moder_interval =
+		ENA_INTR_HIGHEST_USECS;
+	intr_moder_tbl[ENA_INTR_MODER_HIGHEST].pkts_per_interval =
+		ENA_INTR_HIGHEST_PKTS;
+	intr_moder_tbl[ENA_INTR_MODER_HIGHEST].bytes_per_interval =
+		ENA_INTR_HIGHEST_BYTES;
+}
+
+unsigned int ena_com_get_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev)
+{
+	return ena_dev->intr_moder_tx_interval;
+}
+
+unsigned int ena_com_get_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev)
+{
+	struct ena_intr_moder_entry *intr_moder_tbl = ena_dev->intr_moder_tbl;
+
+	if (intr_moder_tbl)
+		return intr_moder_tbl[ENA_INTR_MODER_LOWEST].intr_moder_interval;
+
+	return 0;
+}
+
+void ena_com_init_intr_moderation_entry(struct ena_com_dev *ena_dev,
+					enum ena_intr_moder_level level,
+					struct ena_intr_moder_entry *entry)
+{
+	struct ena_intr_moder_entry *intr_moder_tbl = ena_dev->intr_moder_tbl;
+
+	if (level >= ENA_INTR_MAX_NUM_OF_LEVELS)
+		return;
+
+	intr_moder_tbl[level].intr_moder_interval = entry->intr_moder_interval;
+	if (ena_dev->intr_delay_resolution)
+		intr_moder_tbl[level].intr_moder_interval /=
+			ena_dev->intr_delay_resolution;
+	intr_moder_tbl[level].pkts_per_interval = entry->pkts_per_interval;
+
+	/* use hardcoded value until ethtool supports bytecount parameter */
+	if (entry->bytes_per_interval != ENA_INTR_BYTE_COUNT_NOT_SUPPORTED)
+		intr_moder_tbl[level].bytes_per_interval = entry->bytes_per_interval;
+}
+
+void ena_com_get_intr_moderation_entry(struct ena_com_dev *ena_dev,
+				       enum ena_intr_moder_level level,
+				       struct ena_intr_moder_entry *entry)
+{
+	struct ena_intr_moder_entry *intr_moder_tbl = ena_dev->intr_moder_tbl;
+
+	if (level >= ENA_INTR_MAX_NUM_OF_LEVELS)
+		return;
+
+	entry->intr_moder_interval = intr_moder_tbl[level].intr_moder_interval;
+	if (ena_dev->intr_delay_resolution)
+		entry->intr_moder_interval *= ena_dev->intr_delay_resolution;
+	entry->pkts_per_interval =
+	intr_moder_tbl[level].pkts_per_interval;
+	entry->bytes_per_interval = intr_moder_tbl[level].bytes_per_interval;
+}
diff --git a/sys/contrib/ena-com/ena_com.h b/sys/contrib/ena-com/ena_com.h
new file mode 100644
index 0000000..3d8bf0e
--- /dev/null
+++ b/sys/contrib/ena-com/ena_com.h
@@ -0,0 +1,1054 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder 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.
+ */
+
+#ifndef ENA_COM
+#define ENA_COM
+
+#ifndef ENA_INTERNAL
+#include "ena_plat.h"
+#else
+#include "ena_plat.h"
+#include "ena_includes.h"
+#endif
+
+#define ENA_MAX_NUM_IO_QUEUES		128U
+/* We need to queues for each IO (on for Tx and one for Rx) */
+#define ENA_TOTAL_NUM_QUEUES		(2 * (ENA_MAX_NUM_IO_QUEUES))
+
+#define ENA_MAX_HANDLERS 256
+
+#define ENA_MAX_PHYS_ADDR_SIZE_BITS 48
+
+/* Unit in usec */
+#define ENA_REG_READ_TIMEOUT 200000
+
+#define ADMIN_SQ_SIZE(depth)	((depth) * sizeof(struct ena_admin_aq_entry))
+#define ADMIN_CQ_SIZE(depth)	((depth) * sizeof(struct ena_admin_acq_entry))
+#define ADMIN_AENQ_SIZE(depth)	((depth) * sizeof(struct ena_admin_aenq_entry))
+
+/*****************************************************************************/
+/*****************************************************************************/
+/* ENA adaptive interrupt moderation settings */
+
+#define ENA_INTR_LOWEST_USECS           (0)
+#define ENA_INTR_LOWEST_PKTS            (3)
+#define ENA_INTR_LOWEST_BYTES           (2 * 1524)
+
+#define ENA_INTR_LOW_USECS              (32)
+#define ENA_INTR_LOW_PKTS               (12)
+#define ENA_INTR_LOW_BYTES              (16 * 1024)
+
+#define ENA_INTR_MID_USECS              (80)
+#define ENA_INTR_MID_PKTS               (48)
+#define ENA_INTR_MID_BYTES              (64 * 1024)
+
+#define ENA_INTR_HIGH_USECS             (128)
+#define ENA_INTR_HIGH_PKTS              (96)
+#define ENA_INTR_HIGH_BYTES             (128 * 1024)
+
+#define ENA_INTR_HIGHEST_USECS          (192)
+#define ENA_INTR_HIGHEST_PKTS           (128)
+#define ENA_INTR_HIGHEST_BYTES          (192 * 1024)
+
+#define ENA_INTR_INITIAL_TX_INTERVAL_USECS		196
+#define ENA_INTR_INITIAL_RX_INTERVAL_USECS		4
+#define ENA_INTR_DELAY_OLD_VALUE_WEIGHT			6
+#define ENA_INTR_DELAY_NEW_VALUE_WEIGHT			4
+#define ENA_INTR_MODER_LEVEL_STRIDE			1
+#define ENA_INTR_BYTE_COUNT_NOT_SUPPORTED		0xFFFFFF
+
+#define ENA_HW_HINTS_NO_TIMEOUT				0xFFFF
+
+enum ena_intr_moder_level {
+	ENA_INTR_MODER_LOWEST = 0,
+	ENA_INTR_MODER_LOW,
+	ENA_INTR_MODER_MID,
+	ENA_INTR_MODER_HIGH,
+	ENA_INTR_MODER_HIGHEST,
+	ENA_INTR_MAX_NUM_OF_LEVELS,
+};
+
+struct ena_intr_moder_entry {
+	unsigned int intr_moder_interval;
+	unsigned int pkts_per_interval;
+	unsigned int bytes_per_interval;
+};
+
+enum queue_direction {
+	ENA_COM_IO_QUEUE_DIRECTION_TX,
+	ENA_COM_IO_QUEUE_DIRECTION_RX
+};
+
+struct ena_com_buf {
+	dma_addr_t paddr; /**< Buffer physical address */
+	u16 len; /**< Buffer length in bytes */
+};
+
+struct ena_com_rx_buf_info {
+	u16 len;
+	u16 req_id;
+};
+
+struct ena_com_io_desc_addr {
+	u8 __iomem *pbuf_dev_addr; /* LLQ address */
+	u8 *virt_addr;
+	dma_addr_t phys_addr;
+	ena_mem_handle_t mem_handle;
+};
+
+struct ena_com_tx_meta {
+	u16 mss;
+	u16 l3_hdr_len;
+	u16 l3_hdr_offset;
+	u16 l4_hdr_len; /* In words */
+};
+
+struct ena_com_io_cq {
+	struct ena_com_io_desc_addr cdesc_addr;
+	void *bus;
+
+	/* Interrupt unmask register */
+	u32 __iomem *unmask_reg;
+
+	/* The completion queue head doorbell register */
+	u32 __iomem *cq_head_db_reg;
+
+	/* numa configuration register (for TPH) */
+	u32 __iomem *numa_node_cfg_reg;
+
+	/* The value to write to the above register to unmask
+	 * the interrupt of this queue
+	 */
+	u32 msix_vector;
+
+	enum queue_direction direction;
+
+	/* holds the number of cdesc of the current packet */
+	u16 cur_rx_pkt_cdesc_count;
+	/* save the firt cdesc idx of the current packet */
+	u16 cur_rx_pkt_cdesc_start_idx;
+
+	u16 q_depth;
+	/* Caller qid */
+	u16 qid;
+
+	/* Device queue index */
+	u16 idx;
+	u16 head;
+	u16 last_head_update;
+	u8 phase;
+	u8 cdesc_entry_size_in_bytes;
+
+} ____cacheline_aligned;
+
+struct ena_com_io_sq {
+	struct ena_com_io_desc_addr desc_addr;
+	void *bus;
+
+	u32 __iomem *db_addr;
+	u8 __iomem *header_addr;
+
+	enum queue_direction direction;
+	enum ena_admin_placement_policy_type mem_queue_type;
+
+	u32 msix_vector;
+	struct ena_com_tx_meta cached_tx_meta;
+
+	u16 q_depth;
+	u16 qid;
+
+	u16 idx;
+	u16 tail;
+	u16 next_to_comp;
+	u32 tx_max_header_size;
+	u8 phase;
+	u8 desc_entry_size;
+	u8 dma_addr_bits;
+} ____cacheline_aligned;
+
+struct ena_com_admin_cq {
+	struct ena_admin_acq_entry *entries;
+	ena_mem_handle_t mem_handle;
+	dma_addr_t dma_addr;
+
+	u16 head;
+	u8 phase;
+};
+
+struct ena_com_admin_sq {
+	struct ena_admin_aq_entry *entries;
+	ena_mem_handle_t mem_handle;
+	dma_addr_t dma_addr;
+
+	u32 __iomem *db_addr;
+
+	u16 head;
+	u16 tail;
+	u8 phase;
+
+};
+
+struct ena_com_stats_admin {
+	u32 aborted_cmd;
+	u32 submitted_cmd;
+	u32 completed_cmd;
+	u32 out_of_space;
+	u32 no_completion;
+};
+
+struct ena_com_admin_queue {
+	void *q_dmadev;
+	void *bus;
+	ena_spinlock_t q_lock; /* spinlock for the admin queue */
+
+	struct ena_comp_ctx *comp_ctx;
+	u32 completion_timeout;
+	u16 q_depth;
+	struct ena_com_admin_cq cq;
+	struct ena_com_admin_sq sq;
+
+	/* Indicate if the admin queue should poll for completion */
+	bool polling;
+
+	u16 curr_cmd_id;
+
+	/* Indicate that the ena was initialized and can
+	 * process new admin commands
+	 */
+	bool running_state;
+
+	/* Count the number of outstanding admin commands */
+	ena_atomic32_t outstanding_cmds;
+
+	struct ena_com_stats_admin stats;
+};
+
+struct ena_aenq_handlers;
+
+struct ena_com_aenq {
+	u16 head;
+	u8 phase;
+	struct ena_admin_aenq_entry *entries;
+	dma_addr_t dma_addr;
+	ena_mem_handle_t mem_handle;
+	u16 q_depth;
+	struct ena_aenq_handlers *aenq_handlers;
+};
+
+struct ena_com_mmio_read {
+	struct ena_admin_ena_mmio_req_read_less_resp *read_resp;
+	dma_addr_t read_resp_dma_addr;
+	ena_mem_handle_t read_resp_mem_handle;
+	u32 reg_read_to; /* in us */
+	u16 seq_num;
+	bool readless_supported;
+	/* spin lock to ensure a single outstanding read */
+	ena_spinlock_t lock;
+};
+
+struct ena_rss {
+	/* Indirect table */
+	u16 *host_rss_ind_tbl;
+	struct ena_admin_rss_ind_table_entry *rss_ind_tbl;
+	dma_addr_t rss_ind_tbl_dma_addr;
+	ena_mem_handle_t rss_ind_tbl_mem_handle;
+	u16 tbl_log_size;
+
+	/* Hash key */
+	enum ena_admin_hash_functions hash_func;
+	struct ena_admin_feature_rss_flow_hash_control *hash_key;
+	dma_addr_t hash_key_dma_addr;
+	ena_mem_handle_t hash_key_mem_handle;
+	u32 hash_init_val;
+
+	/* Flow Control */
+	struct ena_admin_feature_rss_hash_control *hash_ctrl;
+	dma_addr_t hash_ctrl_dma_addr;
+	ena_mem_handle_t hash_ctrl_mem_handle;
+
+};
+
+struct ena_host_attribute {
+	/* Debug area */
+	u8 *debug_area_virt_addr;
+	dma_addr_t debug_area_dma_addr;
+	ena_mem_handle_t debug_area_dma_handle;
+	u32 debug_area_size;
+
+	/* Host information */
+	struct ena_admin_host_info *host_info;
+	dma_addr_t host_info_dma_addr;
+	ena_mem_handle_t host_info_dma_handle;
+};
+
+/* Each ena_dev is a PCI function. */
+struct ena_com_dev {
+	struct ena_com_admin_queue admin_queue;
+	struct ena_com_aenq aenq;
+	struct ena_com_io_cq io_cq_queues[ENA_TOTAL_NUM_QUEUES];
+	struct ena_com_io_sq io_sq_queues[ENA_TOTAL_NUM_QUEUES];
+	u8 __iomem *reg_bar;
+	void __iomem *mem_bar;
+	void *dmadev;
+	void *bus;
+	enum ena_admin_placement_policy_type tx_mem_queue_type;
+	u32 tx_max_header_size;
+	u16 stats_func; /* Selected function for extended statistic dump */
+	u16 stats_queue; /* Selected queue for extended statistic dump */
+
+	struct ena_com_mmio_read mmio_read;
+
+	struct ena_rss rss;
+	u32 supported_features;
+	u32 dma_addr_bits;
+
+	struct ena_host_attribute host_attr;
+	bool adaptive_coalescing;
+	u16 intr_delay_resolution;
+	u32 intr_moder_tx_interval;
+	struct ena_intr_moder_entry *intr_moder_tbl;
+};
+
+struct ena_com_dev_get_features_ctx {
+	struct ena_admin_queue_feature_desc max_queues;
+	struct ena_admin_device_attr_feature_desc dev_attr;
+	struct ena_admin_feature_aenq_desc aenq;
+	struct ena_admin_feature_offload_desc offload;
+	struct ena_admin_ena_hw_hints hw_hints;
+};
+
+struct ena_com_create_io_ctx {
+	enum ena_admin_placement_policy_type mem_queue_type;
+	enum queue_direction direction;
+	int numa_node;
+	u32 msix_vector;
+	u16 queue_size;
+	u16 qid;
+};
+
+typedef void (*ena_aenq_handler)(void *data,
+	struct ena_admin_aenq_entry *aenq_e);
+
+/* Holds aenq handlers. Indexed by AENQ event group */
+struct ena_aenq_handlers {
+	ena_aenq_handler handlers[ENA_MAX_HANDLERS];
+	ena_aenq_handler unimplemented_handler;
+};
+
+/*****************************************************************************/
+/*****************************************************************************/
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/* ena_com_mmio_reg_read_request_init - Init the mmio reg read mechanism
+ * @ena_dev: ENA communication layer struct
+ *
+ * Initialize the register read mechanism.
+ *
+ * @note: This method must be the first stage in the initialization sequence.
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_mmio_reg_read_request_init(struct ena_com_dev *ena_dev);
+
+/* ena_com_set_mmio_read_mode - Enable/disable the mmio reg read mechanism
+ * @ena_dev: ENA communication layer struct
+ * @readless_supported: readless mode (enable/disable)
+ */
+void ena_com_set_mmio_read_mode(struct ena_com_dev *ena_dev,
+				bool readless_supported);
+
+/* ena_com_mmio_reg_read_request_write_dev_addr - Write the mmio reg read return
+ * value physical address.
+ * @ena_dev: ENA communication layer struct
+ */
+void ena_com_mmio_reg_read_request_write_dev_addr(struct ena_com_dev *ena_dev);
+
+/* ena_com_mmio_reg_read_request_destroy - Destroy the mmio reg read mechanism
+ * @ena_dev: ENA communication layer struct
+ */
+void ena_com_mmio_reg_read_request_destroy(struct ena_com_dev *ena_dev);
+
+/* ena_com_admin_init - Init the admin and the async queues
+ * @ena_dev: ENA communication layer struct
+ * @aenq_handlers: Those handlers to be called upon event.
+ * @init_spinlock: Indicate if this method should init the admin spinlock or
+ * the spinlock was init before (for example, in a case of FLR).
+ *
+ * Initialize the admin submission and completion queues.
+ * Initialize the asynchronous events notification queues.
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_admin_init(struct ena_com_dev *ena_dev,
+		       struct ena_aenq_handlers *aenq_handlers,
+		       bool init_spinlock);
+
+/* ena_com_admin_destroy - Destroy the admin and the async events queues.
+ * @ena_dev: ENA communication layer struct
+ *
+ * @note: Before calling this method, the caller must validate that the device
+ * won't send any additional admin completions/aenq.
+ * To achieve that, a FLR is recommended.
+ */
+void ena_com_admin_destroy(struct ena_com_dev *ena_dev);
+
+/* ena_com_dev_reset - Perform device FLR to the device.
+ * @ena_dev: ENA communication layer struct
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_dev_reset(struct ena_com_dev *ena_dev);
+
+/* ena_com_create_io_queue - Create io queue.
+ * @ena_dev: ENA communication layer struct
+ * @ctx - create context structure
+ *
+ * Create the submission and the completion queues.
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_create_io_queue(struct ena_com_dev *ena_dev,
+			    struct ena_com_create_io_ctx *ctx);
+
+/* ena_com_destroy_io_queue - Destroy IO queue with the queue id - qid.
+ * @ena_dev: ENA communication layer struct
+ * @qid - the caller virtual queue id.
+ */
+void ena_com_destroy_io_queue(struct ena_com_dev *ena_dev, u16 qid);
+
+/* ena_com_get_io_handlers - Return the io queue handlers
+ * @ena_dev: ENA communication layer struct
+ * @qid - the caller virtual queue id.
+ * @io_sq - IO submission queue handler
+ * @io_cq - IO completion queue handler.
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_get_io_handlers(struct ena_com_dev *ena_dev, u16 qid,
+			    struct ena_com_io_sq **io_sq,
+			    struct ena_com_io_cq **io_cq);
+
+/* ena_com_admin_aenq_enable - ENAble asynchronous event notifications
+ * @ena_dev: ENA communication layer struct
+ *
+ * After this method, aenq event can be received via AENQ.
+ */
+void ena_com_admin_aenq_enable(struct ena_com_dev *ena_dev);
+
+/* ena_com_set_admin_running_state - Set the state of the admin queue
+ * @ena_dev: ENA communication layer struct
+ *
+ * Change the state of the admin queue (enable/disable)
+ */
+void ena_com_set_admin_running_state(struct ena_com_dev *ena_dev, bool state);
+
+/* ena_com_get_admin_running_state - Get the admin queue state
+ * @ena_dev: ENA communication layer struct
+ *
+ * Retrieve the state of the admin queue (enable/disable)
+ *
+ * @return - current polling mode (enable/disable)
+ */
+bool ena_com_get_admin_running_state(struct ena_com_dev *ena_dev);
+
+/* ena_com_set_admin_polling_mode - Set the admin completion queue polling mode
+ * @ena_dev: ENA communication layer struct
+ * @polling: ENAble/Disable polling mode
+ *
+ * Set the admin completion mode.
+ */
+void ena_com_set_admin_polling_mode(struct ena_com_dev *ena_dev, bool polling);
+
+/* ena_com_set_admin_polling_mode - Get the admin completion queue polling mode
+ * @ena_dev: ENA communication layer struct
+ *
+ * Get the admin completion mode.
+ * If polling mode is on, ena_com_execute_admin_command will perform a
+ * polling on the admin completion queue for the commands completion,
+ * otherwise it will wait on wait event.
+ *
+ * @return state
+ */
+bool ena_com_get_ena_admin_polling_mode(struct ena_com_dev *ena_dev);
+
+/* ena_com_admin_q_comp_intr_handler - admin queue interrupt handler
+ * @ena_dev: ENA communication layer struct
+ *
+ * This method go over the admin completion queue and wake up all the pending
+ * threads that wait on the commands wait event.
+ *
+ * @note: Should be called after MSI-X interrupt.
+ */
+void ena_com_admin_q_comp_intr_handler(struct ena_com_dev *ena_dev);
+
+/* ena_com_aenq_intr_handler - AENQ interrupt handler
+ * @ena_dev: ENA communication layer struct
+ *
+ * This method go over the async event notification queue and call the proper
+ * aenq handler.
+ */
+void ena_com_aenq_intr_handler(struct ena_com_dev *dev, void *data);
+
+/* ena_com_abort_admin_commands - Abort all the outstanding admin commands.
+ * @ena_dev: ENA communication layer struct
+ *
+ * This method aborts all the outstanding admin commands.
+ * The caller should then call ena_com_wait_for_abort_completion to make sure
+ * all the commands were completed.
+ */
+void ena_com_abort_admin_commands(struct ena_com_dev *ena_dev);
+
+/* ena_com_wait_for_abort_completion - Wait for admin commands abort.
+ * @ena_dev: ENA communication layer struct
+ *
+ * This method wait until all the outstanding admin commands will be completed.
+ */
+void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev);
+
+/* ena_com_validate_version - Validate the device parameters
+ * @ena_dev: ENA communication layer struct
+ *
+ * This method validate the device parameters are the same as the saved
+ * parameters in ena_dev.
+ * This method is useful after device reset, to validate the device mac address
+ * and the device offloads are the same as before the reset.
+ *
+ * @return - 0 on success negative value otherwise.
+ */
+int ena_com_validate_version(struct ena_com_dev *ena_dev);
+
+/* ena_com_get_link_params - Retrieve physical link parameters.
+ * @ena_dev: ENA communication layer struct
+ * @resp: Link parameters
+ *
+ * Retrieve the physical link parameters,
+ * like speed, auto-negotiation and full duplex support.
+ *
+ * @return - 0 on Success negative value otherwise.
+ */
+int ena_com_get_link_params(struct ena_com_dev *ena_dev,
+			    struct ena_admin_get_feat_resp *resp);
+
+/* ena_com_get_dma_width - Retrieve physical dma address width the device
+ * supports.
+ * @ena_dev: ENA communication layer struct
+ *
+ * Retrieve the maximum physical address bits the device can handle.
+ *
+ * @return: > 0 on Success and negative value otherwise.
+ */
+int ena_com_get_dma_width(struct ena_com_dev *ena_dev);
+
+/* ena_com_set_aenq_config - Set aenq groups configurations
+ * @ena_dev: ENA communication layer struct
+ * @groups flag: bit fields flags of enum ena_admin_aenq_group.
+ *
+ * Configure which aenq event group the driver would like to receive.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_set_aenq_config(struct ena_com_dev *ena_dev, u32 groups_flag);
+
+/* ena_com_get_dev_attr_feat - Get device features
+ * @ena_dev: ENA communication layer struct
+ * @get_feat_ctx: returned context that contain the get features.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_get_dev_attr_feat(struct ena_com_dev *ena_dev,
+			      struct ena_com_dev_get_features_ctx *get_feat_ctx);
+
+/* ena_com_get_dev_basic_stats - Get device basic statistics
+ * @ena_dev: ENA communication layer struct
+ * @stats: stats return value
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_get_dev_basic_stats(struct ena_com_dev *ena_dev,
+				struct ena_admin_basic_stats *stats);
+
+/* ena_com_set_dev_mtu - Configure the device mtu.
+ * @ena_dev: ENA communication layer struct
+ * @mtu: mtu value
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_set_dev_mtu(struct ena_com_dev *ena_dev, int mtu);
+
+/* ena_com_get_offload_settings - Retrieve the device offloads capabilities
+ * @ena_dev: ENA communication layer struct
+ * @offlad: offload return value
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_get_offload_settings(struct ena_com_dev *ena_dev,
+				 struct ena_admin_feature_offload_desc *offload);
+
+/* ena_com_rss_init - Init RSS
+ * @ena_dev: ENA communication layer struct
+ * @log_size: indirection log size
+ *
+ * Allocate RSS/RFS resources.
+ * The caller then can configure rss using ena_com_set_hash_function,
+ * ena_com_set_hash_ctrl and ena_com_indirect_table_set.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_rss_init(struct ena_com_dev *ena_dev, u16 log_size);
+
+/* ena_com_rss_destroy - Destroy rss
+ * @ena_dev: ENA communication layer struct
+ *
+ * Free all the RSS/RFS resources.
+ */
+void ena_com_rss_destroy(struct ena_com_dev *ena_dev);
+
+/* ena_com_fill_hash_function - Fill RSS hash function
+ * @ena_dev: ENA communication layer struct
+ * @func: The hash function (Toeplitz or crc)
+ * @key: Hash key (for toeplitz hash)
+ * @key_len: key length (max length 10 DW)
+ * @init_val: initial value for the hash function
+ *
+ * Fill the ena_dev resources with the desire hash function, hash key, key_len
+ * and key initial value (if needed by the hash function).
+ * To flush the key into the device the caller should call
+ * ena_com_set_hash_function.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_fill_hash_function(struct ena_com_dev *ena_dev,
+			       enum ena_admin_hash_functions func,
+			       const u8 *key, u16 key_len, u32 init_val);
+
+/* ena_com_set_hash_function - Flush the hash function and it dependencies to
+ * the device.
+ * @ena_dev: ENA communication layer struct
+ *
+ * Flush the hash function and it dependencies (key, key length and
+ * initial value) if needed.
+ *
+ * @note: Prior to this method the caller should call ena_com_fill_hash_function
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_set_hash_function(struct ena_com_dev *ena_dev);
+
+/* ena_com_get_hash_function - Retrieve the hash function and the hash key
+ * from the device.
+ * @ena_dev: ENA communication layer struct
+ * @func: hash function
+ * @key: hash key
+ *
+ * Retrieve the hash function and the hash key from the device.
+ *
+ * @note: If the caller called ena_com_fill_hash_function but didn't flash
+ * it to the device, the new configuration will be lost.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_get_hash_function(struct ena_com_dev *ena_dev,
+			      enum ena_admin_hash_functions *func,
+			      u8 *key);
+
+/* ena_com_fill_hash_ctrl - Fill RSS hash control
+ * @ena_dev: ENA communication layer struct.
+ * @proto: The protocol to configure.
+ * @hash_fields: bit mask of ena_admin_flow_hash_fields
+ *
+ * Fill the ena_dev resources with the desire hash control (the ethernet
+ * fields that take part of the hash) for a specific protocol.
+ * To flush the hash control to the device, the caller should call
+ * ena_com_set_hash_ctrl.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_fill_hash_ctrl(struct ena_com_dev *ena_dev,
+			   enum ena_admin_flow_hash_proto proto,
+			   u16 hash_fields);
+
+/* ena_com_set_hash_ctrl - Flush the hash control resources to the device.
+ * @ena_dev: ENA communication layer struct
+ *
+ * Flush the hash control (the ethernet fields that take part of the hash)
+ *
+ * @note: Prior to this method the caller should call ena_com_fill_hash_ctrl.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_set_hash_ctrl(struct ena_com_dev *ena_dev);
+
+/* ena_com_get_hash_ctrl - Retrieve the hash control from the device.
+ * @ena_dev: ENA communication layer struct
+ * @proto: The protocol to retrieve.
+ * @fields: bit mask of ena_admin_flow_hash_fields.
+ *
+ * Retrieve the hash control from the device.
+ *
+ * @note, If the caller called ena_com_fill_hash_ctrl but didn't flash
+ * it to the device, the new configuration will be lost.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_get_hash_ctrl(struct ena_com_dev *ena_dev,
+			  enum ena_admin_flow_hash_proto proto,
+			  u16 *fields);
+
+/* ena_com_set_default_hash_ctrl - Set the hash control to a default
+ * configuration.
+ * @ena_dev: ENA communication layer struct
+ *
+ * Fill the ena_dev resources with the default hash control configuration.
+ * To flush the hash control to the device, the caller should call
+ * ena_com_set_hash_ctrl.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_set_default_hash_ctrl(struct ena_com_dev *ena_dev);
+
+/* ena_com_indirect_table_fill_entry - Fill a single entry in the RSS
+ * indirection table
+ * @ena_dev: ENA communication layer struct.
+ * @entry_idx - indirection table entry.
+ * @entry_value - redirection value
+ *
+ * Fill a single entry of the RSS indirection table in the ena_dev resources.
+ * To flush the indirection table to the device, the called should call
+ * ena_com_indirect_table_set.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_indirect_table_fill_entry(struct ena_com_dev *ena_dev,
+				      u16 entry_idx, u16 entry_value);
+
+/* ena_com_indirect_table_set - Flush the indirection table to the device.
+ * @ena_dev: ENA communication layer struct
+ *
+ * Flush the indirection hash control to the device.
+ * Prior to this method the caller should call ena_com_indirect_table_fill_entry
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_indirect_table_set(struct ena_com_dev *ena_dev);
+
+/* ena_com_indirect_table_get - Retrieve the indirection table from the device.
+ * @ena_dev: ENA communication layer struct
+ * @ind_tbl: indirection table
+ *
+ * Retrieve the RSS indirection table from the device.
+ *
+ * @note: If the caller called ena_com_indirect_table_fill_entry but didn't flash
+ * it to the device, the new configuration will be lost.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_indirect_table_get(struct ena_com_dev *ena_dev, u32 *ind_tbl);
+
+/* ena_com_allocate_host_info - Allocate host info resources.
+ * @ena_dev: ENA communication layer struct
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_allocate_host_info(struct ena_com_dev *ena_dev);
+
+/* ena_com_allocate_debug_area - Allocate debug area.
+ * @ena_dev: ENA communication layer struct
+ * @debug_area_size - debug area size.
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_allocate_debug_area(struct ena_com_dev *ena_dev,
+				u32 debug_area_size);
+
+/* ena_com_delete_debug_area - Free the debug area resources.
+ * @ena_dev: ENA communication layer struct
+ *
+ * Free the allocate debug area.
+ */
+void ena_com_delete_debug_area(struct ena_com_dev *ena_dev);
+
+/* ena_com_delete_host_info - Free the host info resources.
+ * @ena_dev: ENA communication layer struct
+ *
+ * Free the allocate host info.
+ */
+void ena_com_delete_host_info(struct ena_com_dev *ena_dev);
+
+/* ena_com_set_host_attributes - Update the device with the host
+ * attributes (debug area and host info) base address.
+ * @ena_dev: ENA communication layer struct
+ *
+ * @return: 0 on Success and negative value otherwise.
+ */
+int ena_com_set_host_attributes(struct ena_com_dev *ena_dev);
+
+/* ena_com_create_io_cq - Create io completion queue.
+ * @ena_dev: ENA communication layer struct
+ * @io_cq - io completion queue handler
+
+ * Create IO completion queue.
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_create_io_cq(struct ena_com_dev *ena_dev,
+			 struct ena_com_io_cq *io_cq);
+
+/* ena_com_destroy_io_cq - Destroy io completion queue.
+ * @ena_dev: ENA communication layer struct
+ * @io_cq - io completion queue handler
+
+ * Destroy IO completion queue.
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_destroy_io_cq(struct ena_com_dev *ena_dev,
+			  struct ena_com_io_cq *io_cq);
+
+/* ena_com_execute_admin_command - Execute admin command
+ * @admin_queue: admin queue.
+ * @cmd: the admin command to execute.
+ * @cmd_size: the command size.
+ * @cmd_completion: command completion return value.
+ * @cmd_comp_size: command completion size.
+
+ * Submit an admin command and then wait until the device will return a
+ * completion.
+ * The completion will be copyed into cmd_comp.
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_execute_admin_command(struct ena_com_admin_queue *admin_queue,
+				  struct ena_admin_aq_entry *cmd,
+				  size_t cmd_size,
+				  struct ena_admin_acq_entry *cmd_comp,
+				  size_t cmd_comp_size);
+
+/* ena_com_init_interrupt_moderation - Init interrupt moderation
+ * @ena_dev: ENA communication layer struct
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_init_interrupt_moderation(struct ena_com_dev *ena_dev);
+
+/* ena_com_destroy_interrupt_moderation - Destroy interrupt moderation resources
+ * @ena_dev: ENA communication layer struct
+ */
+void ena_com_destroy_interrupt_moderation(struct ena_com_dev *ena_dev);
+
+/* ena_com_interrupt_moderation_supported - Return if interrupt moderation
+ * capability is supported by the device.
+ *
+ * @return - supported or not.
+ */
+bool ena_com_interrupt_moderation_supported(struct ena_com_dev *ena_dev);
+
+/* ena_com_config_default_interrupt_moderation_table - Restore the interrupt
+ * moderation table back to the default parameters.
+ * @ena_dev: ENA communication layer struct
+ */
+void ena_com_config_default_interrupt_moderation_table(struct ena_com_dev *ena_dev);
+
+/* ena_com_update_nonadaptive_moderation_interval_tx - Update the
+ * non-adaptive interval in Tx direction.
+ * @ena_dev: ENA communication layer struct
+ * @tx_coalesce_usecs: Interval in usec.
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_update_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev,
+						      u32 tx_coalesce_usecs);
+
+/* ena_com_update_nonadaptive_moderation_interval_rx - Update the
+ * non-adaptive interval in Rx direction.
+ * @ena_dev: ENA communication layer struct
+ * @rx_coalesce_usecs: Interval in usec.
+ *
+ * @return - 0 on success, negative value on failure.
+ */
+int ena_com_update_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev,
+						      u32 rx_coalesce_usecs);
+
+/* ena_com_get_nonadaptive_moderation_interval_tx - Retrieve the
+ * non-adaptive interval in Tx direction.
+ * @ena_dev: ENA communication layer struct
+ *
+ * @return - interval in usec
+ */
+unsigned int ena_com_get_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev);
+
+/* ena_com_get_nonadaptive_moderation_interval_rx - Retrieve the
+ * non-adaptive interval in Rx direction.
+ * @ena_dev: ENA communication layer struct
+ *
+ * @return - interval in usec
+ */
+unsigned int ena_com_get_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev);
+
+/* ena_com_init_intr_moderation_entry - Update a single entry in the interrupt
+ * moderation table.
+ * @ena_dev: ENA communication layer struct
+ * @level: Interrupt moderation table level
+ * @entry: Entry value
+ *
+ * Update a single entry in the interrupt moderation table.
+ */
+void ena_com_init_intr_moderation_entry(struct ena_com_dev *ena_dev,
+					enum ena_intr_moder_level level,
+					struct ena_intr_moder_entry *entry);
+
+/* ena_com_get_intr_moderation_entry - Init ena_intr_moder_entry.
+ * @ena_dev: ENA communication layer struct
+ * @level: Interrupt moderation table level
+ * @entry: Entry to fill.
+ *
+ * Initialize the entry according to the adaptive interrupt moderation table.
+ */
+void ena_com_get_intr_moderation_entry(struct ena_com_dev *ena_dev,
+				       enum ena_intr_moder_level level,
+				       struct ena_intr_moder_entry *entry);
+
+static inline bool ena_com_get_adaptive_moderation_enabled(struct ena_com_dev *ena_dev)
+{
+	return ena_dev->adaptive_coalescing;
+}
+
+static inline void ena_com_enable_adaptive_moderation(struct ena_com_dev *ena_dev)
+{
+	ena_dev->adaptive_coalescing = true;
+}
+
+static inline void ena_com_disable_adaptive_moderation(struct ena_com_dev *ena_dev)
+{
+	ena_dev->adaptive_coalescing = false;
+}
+
+/* ena_com_calculate_interrupt_delay - Calculate new interrupt delay
+ * @ena_dev: ENA communication layer struct
+ * @pkts: Number of packets since the last update
+ * @bytes: Number of bytes received since the last update.
+ * @smoothed_interval: Returned interval
+ * @moder_tbl_idx: Current table level as input update new level as return
+ * value.
+ */
+static inline void ena_com_calculate_interrupt_delay(struct ena_com_dev *ena_dev,
+						     unsigned int pkts,
+						     unsigned int bytes,
+						     unsigned int *smoothed_interval,
+						     unsigned int *moder_tbl_idx)
+{
+	enum ena_intr_moder_level curr_moder_idx, new_moder_idx;
+	struct ena_intr_moder_entry *curr_moder_entry;
+	struct ena_intr_moder_entry *pred_moder_entry;
+	struct ena_intr_moder_entry *new_moder_entry;
+	struct ena_intr_moder_entry *intr_moder_tbl = ena_dev->intr_moder_tbl;
+	unsigned int interval;
+
+	/* We apply adaptive moderation on Rx path only.
+	 * Tx uses static interrupt moderation.
+	 */
+	if (!pkts || !bytes)
+		/* Tx interrupt, or spurious interrupt,
+		 * in both cases we just use same delay values
+		 */
+		return;
+
+	curr_moder_idx = (enum ena_intr_moder_level)(*moder_tbl_idx);
+	if (unlikely(curr_moder_idx >=  ENA_INTR_MAX_NUM_OF_LEVELS)) {
+		ena_trc_err("Wrong moderation index %u\n", curr_moder_idx);
+		return;
+	}
+
+	curr_moder_entry = &intr_moder_tbl[curr_moder_idx];
+	new_moder_idx = curr_moder_idx;
+
+	if (curr_moder_idx == ENA_INTR_MODER_LOWEST) {
+		if ((pkts > curr_moder_entry->pkts_per_interval) ||
+		    (bytes > curr_moder_entry->bytes_per_interval))
+			new_moder_idx =
+				(enum ena_intr_moder_level)(curr_moder_idx + ENA_INTR_MODER_LEVEL_STRIDE);
+	} else {
+		pred_moder_entry = &intr_moder_tbl[curr_moder_idx - ENA_INTR_MODER_LEVEL_STRIDE];
+
+		if ((pkts <= pred_moder_entry->pkts_per_interval) ||
+		    (bytes <= pred_moder_entry->bytes_per_interval))
+			new_moder_idx =
+				(enum ena_intr_moder_level)(curr_moder_idx - ENA_INTR_MODER_LEVEL_STRIDE);
+		else if ((pkts > curr_moder_entry->pkts_per_interval) ||
+			 (bytes > curr_moder_entry->bytes_per_interval)) {
+			if (curr_moder_idx != ENA_INTR_MODER_HIGHEST)
+				new_moder_idx =
+					(enum ena_intr_moder_level)(curr_moder_idx + ENA_INTR_MODER_LEVEL_STRIDE);
+		}
+	}
+	new_moder_entry = &intr_moder_tbl[new_moder_idx];
+
+	interval = new_moder_entry->intr_moder_interval;
+	*smoothed_interval = (
+		(interval * ENA_INTR_DELAY_NEW_VALUE_WEIGHT +
+		ENA_INTR_DELAY_OLD_VALUE_WEIGHT * (*smoothed_interval)) + 5) /
+		10;
+
+	*moder_tbl_idx = new_moder_idx;
+}
+
+/* ena_com_update_intr_reg - Prepare interrupt register
+ * @intr_reg: interrupt register to update.
+ * @rx_delay_interval: Rx interval in usecs
+ * @tx_delay_interval: Tx interval in usecs
+ * @unmask: unask enable/disable
+ *
+ * Prepare interrupt update register with the supplied parameters.
+ */
+static inline void ena_com_update_intr_reg(struct ena_eth_io_intr_reg *intr_reg,
+					   u32 rx_delay_interval,
+					   u32 tx_delay_interval,
+					   bool unmask)
+{
+	intr_reg->intr_control = 0;
+	intr_reg->intr_control |= rx_delay_interval &
+		ENA_ETH_IO_INTR_REG_RX_INTR_DELAY_MASK;
+
+	intr_reg->intr_control |=
+		(tx_delay_interval << ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_SHIFT)
+		& ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_MASK;
+
+	if (unmask)
+		intr_reg->intr_control |= ENA_ETH_IO_INTR_REG_INTR_UNMASK_MASK;
+}
+
+#if defined(__cplusplus)
+}
+#endif /* __cplusplus */
+#endif /* !(ENA_COM) */
diff --git a/sys/contrib/ena-com/ena_common_defs.h b/sys/contrib/ena-com/ena_common_defs.h
new file mode 100644
index 0000000..f2d8189
--- /dev/null
+++ b/sys/contrib/ena-com/ena_common_defs.h
@@ -0,0 +1,50 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder 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.
+ */
+
+#ifndef _ENA_COMMON_H_
+#define _ENA_COMMON_H_
+
+#define ENA_COMMON_SPEC_VERSION_MAJOR	0 /*  */
+#define ENA_COMMON_SPEC_VERSION_MINOR	10 /*  */
+
+/* ENA operates with 48-bit memory addresses. ena_mem_addr_t */
+struct ena_common_mem_addr {
+	uint32_t mem_addr_low;
+
+	uint16_t mem_addr_high;
+
+	/* MBZ */
+	uint16_t reserved16;
+};
+
+#endif /*_ENA_COMMON_H_ */
diff --git a/sys/contrib/ena-com/ena_eth_com.c b/sys/contrib/ena-com/ena_eth_com.c
new file mode 100644
index 0000000..fbf561e
--- /dev/null
+++ b/sys/contrib/ena-com/ena_eth_com.c
@@ -0,0 +1,509 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder 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.
+ */
+
+#include "ena_eth_com.h"
+
+static inline struct ena_eth_io_rx_cdesc_base *ena_com_get_next_rx_cdesc(
+	struct ena_com_io_cq *io_cq)
+{
+	struct ena_eth_io_rx_cdesc_base *cdesc;
+	u16 expected_phase, head_masked;
+	u16 desc_phase;
+
+	head_masked = io_cq->head & (io_cq->q_depth - 1);
+	expected_phase = io_cq->phase;
+
+	cdesc = (struct ena_eth_io_rx_cdesc_base *)(io_cq->cdesc_addr.virt_addr
+			+ (head_masked * io_cq->cdesc_entry_size_in_bytes));
+
+	desc_phase = (READ_ONCE(cdesc->status) & ENA_ETH_IO_RX_CDESC_BASE_PHASE_MASK) >>
+			ENA_ETH_IO_RX_CDESC_BASE_PHASE_SHIFT;
+
+	if (desc_phase != expected_phase)
+		return NULL;
+
+	return cdesc;
+}
+
+static inline void ena_com_cq_inc_head(struct ena_com_io_cq *io_cq)
+{
+	io_cq->head++;
+
+	/* Switch phase bit in case of wrap around */
+	if (unlikely((io_cq->head & (io_cq->q_depth - 1)) == 0))
+		io_cq->phase ^= 1;
+}
+
+static inline void *get_sq_desc(struct ena_com_io_sq *io_sq)
+{
+	u16 tail_masked;
+	u32 offset;
+
+	tail_masked = io_sq->tail & (io_sq->q_depth - 1);
+
+	offset = tail_masked * io_sq->desc_entry_size;
+
+	return (void *)((uintptr_t)io_sq->desc_addr.virt_addr + offset);
+}
+
+static inline void ena_com_copy_curr_sq_desc_to_dev(struct ena_com_io_sq *io_sq)
+{
+	u16 tail_masked = io_sq->tail & (io_sq->q_depth - 1);
+	u32 offset = tail_masked * io_sq->desc_entry_size;
+
+	/* In case this queue isn't a LLQ */
+	if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
+		return;
+
+	memcpy_toio(io_sq->desc_addr.pbuf_dev_addr + offset,
+		    io_sq->desc_addr.virt_addr + offset,
+		    io_sq->desc_entry_size);
+}
+
+static inline void ena_com_sq_update_tail(struct ena_com_io_sq *io_sq)
+{
+	io_sq->tail++;
+
+	/* Switch phase bit in case of wrap around */
+	if (unlikely((io_sq->tail & (io_sq->q_depth - 1)) == 0))
+		io_sq->phase ^= 1;
+}
+
+static inline int ena_com_write_header(struct ena_com_io_sq *io_sq,
+				       u8 *head_src, u16 header_len)
+{
+	u16 tail_masked = io_sq->tail & (io_sq->q_depth - 1);
+	u8 __iomem *dev_head_addr =
+		io_sq->header_addr + (tail_masked * io_sq->tx_max_header_size);
+
+	if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
+		return 0;
+
+	if (unlikely(!io_sq->header_addr)) {
+		ena_trc_err("Push buffer header ptr is NULL\n");
+		return ENA_COM_INVAL;
+	}
+
+	memcpy_toio(dev_head_addr, head_src, header_len);
+
+	return 0;
+}
+
+static inline struct ena_eth_io_rx_cdesc_base *
+	ena_com_rx_cdesc_idx_to_ptr(struct ena_com_io_cq *io_cq, u16 idx)
+{
+	idx &= (io_cq->q_depth - 1);
+	return (struct ena_eth_io_rx_cdesc_base *)
+		((uintptr_t)io_cq->cdesc_addr.virt_addr +
+		idx * io_cq->cdesc_entry_size_in_bytes);
+}
+
+static inline u16 ena_com_cdesc_rx_pkt_get(struct ena_com_io_cq *io_cq,
+					   u16 *first_cdesc_idx)
+{
+	struct ena_eth_io_rx_cdesc_base *cdesc;
+	u16 count = 0, head_masked;
+	u32 last = 0;
+
+	do {
+		cdesc = ena_com_get_next_rx_cdesc(io_cq);
+		if (!cdesc)
+			break;
+
+		ena_com_cq_inc_head(io_cq);
+		count++;
+		last = (READ_ONCE(cdesc->status) & ENA_ETH_IO_RX_CDESC_BASE_LAST_MASK) >>
+			ENA_ETH_IO_RX_CDESC_BASE_LAST_SHIFT;
+	} while (!last);
+
+	if (last) {
+		*first_cdesc_idx = io_cq->cur_rx_pkt_cdesc_start_idx;
+		count += io_cq->cur_rx_pkt_cdesc_count;
+
+		head_masked = io_cq->head & (io_cq->q_depth - 1);
+
+		io_cq->cur_rx_pkt_cdesc_count = 0;
+		io_cq->cur_rx_pkt_cdesc_start_idx = head_masked;
+
+		ena_trc_dbg("ena q_id: %d packets were completed. first desc idx %u descs# %d\n",
+			    io_cq->qid, *first_cdesc_idx, count);
+	} else {
+		io_cq->cur_rx_pkt_cdesc_count += count;
+		count = 0;
+	}
+
+	return count;
+}
+
+static inline bool ena_com_meta_desc_changed(struct ena_com_io_sq *io_sq,
+					     struct ena_com_tx_ctx *ena_tx_ctx)
+{
+	int rc;
+
+	if (ena_tx_ctx->meta_valid) {
+		rc = memcmp(&io_sq->cached_tx_meta,
+			    &ena_tx_ctx->ena_meta,
+			    sizeof(struct ena_com_tx_meta));
+
+		if (unlikely(rc != 0))
+			return true;
+	}
+
+	return false;
+}
+
+static inline void ena_com_create_and_store_tx_meta_desc(struct ena_com_io_sq *io_sq,
+							 struct ena_com_tx_ctx *ena_tx_ctx)
+{
+	struct ena_eth_io_tx_meta_desc *meta_desc = NULL;
+	struct ena_com_tx_meta *ena_meta = &ena_tx_ctx->ena_meta;
+
+	meta_desc = get_sq_desc(io_sq);
+	memset(meta_desc, 0x0, sizeof(struct ena_eth_io_tx_meta_desc));
+
+	meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_META_DESC_MASK;
+
+	meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_EXT_VALID_MASK;
+
+	/* bits 0-9 of the mss */
+	meta_desc->word2 |= (ena_meta->mss <<
+		ENA_ETH_IO_TX_META_DESC_MSS_LO_SHIFT) &
+		ENA_ETH_IO_TX_META_DESC_MSS_LO_MASK;
+	/* bits 10-13 of the mss */
+	meta_desc->len_ctrl |= ((ena_meta->mss >> 10) <<
+		ENA_ETH_IO_TX_META_DESC_MSS_HI_SHIFT) &
+		ENA_ETH_IO_TX_META_DESC_MSS_HI_MASK;
+
+	/* Extended meta desc */
+	meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_MASK;
+	meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_META_STORE_MASK;
+	meta_desc->len_ctrl |= (io_sq->phase <<
+		ENA_ETH_IO_TX_META_DESC_PHASE_SHIFT) &
+		ENA_ETH_IO_TX_META_DESC_PHASE_MASK;
+
+	meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_FIRST_MASK;
+	meta_desc->word2 |= ena_meta->l3_hdr_len &
+		ENA_ETH_IO_TX_META_DESC_L3_HDR_LEN_MASK;
+	meta_desc->word2 |= (ena_meta->l3_hdr_offset <<
+		ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_SHIFT) &
+		ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_MASK;
+
+	meta_desc->word2 |= (ena_meta->l4_hdr_len <<
+		ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_SHIFT) &
+		ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_MASK;
+
+	meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_META_STORE_MASK;
+
+	/* Cached the meta desc */
+	memcpy(&io_sq->cached_tx_meta, ena_meta,
+	       sizeof(struct ena_com_tx_meta));
+
+	ena_com_copy_curr_sq_desc_to_dev(io_sq);
+	ena_com_sq_update_tail(io_sq);
+}
+
+static inline void ena_com_rx_set_flags(struct ena_com_rx_ctx *ena_rx_ctx,
+					struct ena_eth_io_rx_cdesc_base *cdesc)
+{
+	ena_rx_ctx->l3_proto = cdesc->status &
+		ENA_ETH_IO_RX_CDESC_BASE_L3_PROTO_IDX_MASK;
+	ena_rx_ctx->l4_proto =
+		(cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_MASK) >>
+		ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_SHIFT;
+	ena_rx_ctx->l3_csum_err =
+		(cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_MASK) >>
+		ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_SHIFT;
+	ena_rx_ctx->l4_csum_err =
+		(cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_MASK) >>
+		ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_SHIFT;
+	ena_rx_ctx->hash = cdesc->hash;
+	ena_rx_ctx->frag =
+		(cdesc->status & ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_MASK) >>
+		ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_SHIFT;
+
+	ena_trc_dbg("ena_rx_ctx->l3_proto %d ena_rx_ctx->l4_proto %d\nena_rx_ctx->l3_csum_err %d ena_rx_ctx->l4_csum_err %d\nhash frag %d frag: %d cdesc_status: %x\n",
+		    ena_rx_ctx->l3_proto,
+		    ena_rx_ctx->l4_proto,
+		    ena_rx_ctx->l3_csum_err,
+		    ena_rx_ctx->l4_csum_err,
+		    ena_rx_ctx->hash,
+		    ena_rx_ctx->frag,
+		    cdesc->status);
+}
+
+/*****************************************************************************/
+/*****************************     API      **********************************/
+/*****************************************************************************/
+
+int ena_com_prepare_tx(struct ena_com_io_sq *io_sq,
+		       struct ena_com_tx_ctx *ena_tx_ctx,
+		       int *nb_hw_desc)
+{
+	struct ena_eth_io_tx_desc *desc = NULL;
+	struct ena_com_buf *ena_bufs = ena_tx_ctx->ena_bufs;
+	void *push_header = ena_tx_ctx->push_header;
+	u16 header_len = ena_tx_ctx->header_len;
+	u16 num_bufs = ena_tx_ctx->num_bufs;
+	int total_desc, i, rc;
+	bool have_meta;
+	u64 addr_hi;
+
+	ENA_WARN(io_sq->direction != ENA_COM_IO_QUEUE_DIRECTION_TX,
+		 "wrong Q type");
+
+	/* num_bufs +1 for potential meta desc */
+	if (ena_com_sq_empty_space(io_sq) < (num_bufs + 1)) {
+		ena_trc_err("Not enough space in the tx queue\n");
+		return ENA_COM_NO_MEM;
+	}
+
+	if (unlikely(header_len > io_sq->tx_max_header_size)) {
+		ena_trc_err("header size is too large %d max header: %d\n",
+			    header_len, io_sq->tx_max_header_size);
+		return ENA_COM_INVAL;
+	}
+
+	/* start with pushing the header (if needed) */
+	rc = ena_com_write_header(io_sq, push_header, header_len);
+	if (unlikely(rc))
+		return rc;
+
+	have_meta = ena_tx_ctx->meta_valid && ena_com_meta_desc_changed(io_sq,
+			ena_tx_ctx);
+	if (have_meta)
+		ena_com_create_and_store_tx_meta_desc(io_sq, ena_tx_ctx);
+
+	/* If the caller doesn't want send packets */
+	if (unlikely(!num_bufs && !header_len)) {
+		*nb_hw_desc = have_meta ? 0 : 1;
+		return 0;
+	}
+
+	desc = get_sq_desc(io_sq);
+	memset(desc, 0x0, sizeof(struct ena_eth_io_tx_desc));
+
+	/* Set first desc when we don't have meta descriptor */
+	if (!have_meta)
+		desc->len_ctrl |= ENA_ETH_IO_TX_DESC_FIRST_MASK;
+
+	desc->buff_addr_hi_hdr_sz |= (header_len <<
+		ENA_ETH_IO_TX_DESC_HEADER_LENGTH_SHIFT) &
+		ENA_ETH_IO_TX_DESC_HEADER_LENGTH_MASK;
+	desc->len_ctrl |= (io_sq->phase << ENA_ETH_IO_TX_DESC_PHASE_SHIFT) &
+		ENA_ETH_IO_TX_DESC_PHASE_MASK;
+
+	desc->len_ctrl |= ENA_ETH_IO_TX_DESC_COMP_REQ_MASK;
+
+	/* Bits 0-9 */
+	desc->meta_ctrl |= (ena_tx_ctx->req_id <<
+		ENA_ETH_IO_TX_DESC_REQ_ID_LO_SHIFT) &
+		ENA_ETH_IO_TX_DESC_REQ_ID_LO_MASK;
+
+	desc->meta_ctrl |= (ena_tx_ctx->df <<
+		ENA_ETH_IO_TX_DESC_DF_SHIFT) &
+		ENA_ETH_IO_TX_DESC_DF_MASK;
+
+	/* Bits 10-15 */
+	desc->len_ctrl |= ((ena_tx_ctx->req_id >> 10) <<
+		ENA_ETH_IO_TX_DESC_REQ_ID_HI_SHIFT) &
+		ENA_ETH_IO_TX_DESC_REQ_ID_HI_MASK;
+
+	if (ena_tx_ctx->meta_valid) {
+		desc->meta_ctrl |= (ena_tx_ctx->tso_enable <<
+			ENA_ETH_IO_TX_DESC_TSO_EN_SHIFT) &
+			ENA_ETH_IO_TX_DESC_TSO_EN_MASK;
+		desc->meta_ctrl |= ena_tx_ctx->l3_proto &
+			ENA_ETH_IO_TX_DESC_L3_PROTO_IDX_MASK;
+		desc->meta_ctrl |= (ena_tx_ctx->l4_proto <<
+			ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_SHIFT) &
+			ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_MASK;
+		desc->meta_ctrl |= (ena_tx_ctx->l3_csum_enable <<
+			ENA_ETH_IO_TX_DESC_L3_CSUM_EN_SHIFT) &
+			ENA_ETH_IO_TX_DESC_L3_CSUM_EN_MASK;
+		desc->meta_ctrl |= (ena_tx_ctx->l4_csum_enable <<
+			ENA_ETH_IO_TX_DESC_L4_CSUM_EN_SHIFT) &
+			ENA_ETH_IO_TX_DESC_L4_CSUM_EN_MASK;
+		desc->meta_ctrl |= (ena_tx_ctx->l4_csum_partial <<
+			ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_SHIFT) &
+			ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_MASK;
+	}
+
+	for (i = 0; i < num_bufs; i++) {
+		/* The first desc share the same desc as the header */
+		if (likely(i != 0)) {
+			ena_com_copy_curr_sq_desc_to_dev(io_sq);
+			ena_com_sq_update_tail(io_sq);
+
+			desc = get_sq_desc(io_sq);
+			memset(desc, 0x0, sizeof(struct ena_eth_io_tx_desc));
+
+			desc->len_ctrl |= (io_sq->phase <<
+				ENA_ETH_IO_TX_DESC_PHASE_SHIFT) &
+				ENA_ETH_IO_TX_DESC_PHASE_MASK;
+		}
+
+		desc->len_ctrl |= ena_bufs->len &
+			ENA_ETH_IO_TX_DESC_LENGTH_MASK;
+
+		addr_hi = ((ena_bufs->paddr &
+			GENMASK_ULL(io_sq->dma_addr_bits - 1, 32)) >> 32);
+
+		desc->buff_addr_lo = (u32)ena_bufs->paddr;
+		desc->buff_addr_hi_hdr_sz |= addr_hi &
+			ENA_ETH_IO_TX_DESC_ADDR_HI_MASK;
+		ena_bufs++;
+	}
+
+	/* set the last desc indicator */
+	desc->len_ctrl |= ENA_ETH_IO_TX_DESC_LAST_MASK;
+
+	ena_com_copy_curr_sq_desc_to_dev(io_sq);
+
+	ena_com_sq_update_tail(io_sq);
+
+	total_desc = ENA_MAX16(num_bufs, 1);
+	total_desc += have_meta ? 1 : 0;
+
+	*nb_hw_desc = total_desc;
+	return 0;
+}
+
+int ena_com_rx_pkt(struct ena_com_io_cq *io_cq,
+		   struct ena_com_io_sq *io_sq,
+		   struct ena_com_rx_ctx *ena_rx_ctx)
+{
+	struct ena_com_rx_buf_info *ena_buf = &ena_rx_ctx->ena_bufs[0];
+	struct ena_eth_io_rx_cdesc_base *cdesc = NULL;
+	u16 cdesc_idx = 0;
+	u16 nb_hw_desc;
+	u16 i;
+
+	ENA_WARN(io_cq->direction != ENA_COM_IO_QUEUE_DIRECTION_RX,
+		 "wrong Q type");
+
+	nb_hw_desc = ena_com_cdesc_rx_pkt_get(io_cq, &cdesc_idx);
+	if (nb_hw_desc == 0) {
+		ena_rx_ctx->descs = nb_hw_desc;
+		return 0;
+	}
+
+	ena_trc_dbg("fetch rx packet: queue %d completed desc: %d\n",
+		    io_cq->qid, nb_hw_desc);
+
+	if (unlikely(nb_hw_desc > ena_rx_ctx->max_bufs)) {
+		ena_trc_err("Too many RX cdescs (%d) > MAX(%d)\n",
+			    nb_hw_desc, ena_rx_ctx->max_bufs);
+		return ENA_COM_NO_SPACE;
+	}
+
+	for (i = 0; i < nb_hw_desc; i++) {
+		cdesc = ena_com_rx_cdesc_idx_to_ptr(io_cq, cdesc_idx + i);
+
+		ena_buf->len = cdesc->length;
+		ena_buf->req_id = cdesc->req_id;
+		ena_buf++;
+	}
+
+	/* Update SQ head ptr */
+	io_sq->next_to_comp += nb_hw_desc;
+
+	ena_trc_dbg("[%s][QID#%d] Updating SQ head to: %d\n", __func__,
+		    io_sq->qid, io_sq->next_to_comp);
+
+	/* Get rx flags from the last pkt */
+	ena_com_rx_set_flags(ena_rx_ctx, cdesc);
+
+	ena_rx_ctx->descs = nb_hw_desc;
+	return 0;
+}
+
+int ena_com_add_single_rx_desc(struct ena_com_io_sq *io_sq,
+			       struct ena_com_buf *ena_buf,
+			       u16 req_id)
+{
+	struct ena_eth_io_rx_desc *desc;
+
+	ENA_WARN(io_sq->direction != ENA_COM_IO_QUEUE_DIRECTION_RX,
+		 "wrong Q type");
+
+	if (unlikely(ena_com_sq_empty_space(io_sq) == 0))
+		return ENA_COM_NO_SPACE;
+
+	desc = get_sq_desc(io_sq);
+	memset(desc, 0x0, sizeof(struct ena_eth_io_rx_desc));
+
+	desc->length = ena_buf->len;
+
+	desc->ctrl |= ENA_ETH_IO_RX_DESC_FIRST_MASK;
+	desc->ctrl |= ENA_ETH_IO_RX_DESC_LAST_MASK;
+	desc->ctrl |= io_sq->phase & ENA_ETH_IO_RX_DESC_PHASE_MASK;
+	desc->ctrl |= ENA_ETH_IO_RX_DESC_COMP_REQ_MASK;
+
+	desc->req_id = req_id;
+
+	desc->buff_addr_lo = (u32)ena_buf->paddr;
+	desc->buff_addr_hi =
+		((ena_buf->paddr & GENMASK_ULL(io_sq->dma_addr_bits - 1, 32)) >> 32);
+
+	ena_com_sq_update_tail(io_sq);
+
+	return 0;
+}
+
+int ena_com_tx_comp_req_id_get(struct ena_com_io_cq *io_cq, u16 *req_id)
+{
+	u8 expected_phase, cdesc_phase;
+	struct ena_eth_io_tx_cdesc *cdesc;
+	u16 masked_head;
+
+	masked_head = io_cq->head & (io_cq->q_depth - 1);
+	expected_phase = io_cq->phase;
+
+	cdesc = (struct ena_eth_io_tx_cdesc *)
+		((uintptr_t)io_cq->cdesc_addr.virt_addr +
+		(masked_head * io_cq->cdesc_entry_size_in_bytes));
+
+	/* When the current completion descriptor phase isn't the same as the
+	 * expected, it mean that the device still didn't update
+	 * this completion.
+	 */
+	cdesc_phase = READ_ONCE(cdesc->flags) & ENA_ETH_IO_TX_CDESC_PHASE_MASK;
+	if (cdesc_phase != expected_phase)
+		return ENA_COM_TRY_AGAIN;
+
+	ena_com_cq_inc_head(io_cq);
+
+	*req_id = READ_ONCE(cdesc->req_id);
+
+	return 0;
+}
diff --git a/sys/contrib/ena-com/ena_eth_com.h b/sys/contrib/ena-com/ena_eth_com.h
new file mode 100644
index 0000000..ec32d77
--- /dev/null
+++ b/sys/contrib/ena-com/ena_eth_com.h
@@ -0,0 +1,167 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder 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.
+ */
+
+#ifndef ENA_ETH_COM_H_
+#define ENA_ETH_COM_H_
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+#include "ena_com.h"
+
+/* head update threshold in units of (queue size / ENA_COMP_HEAD_THRESH) */
+#define ENA_COMP_HEAD_THRESH 4
+
+struct ena_com_tx_ctx {
+	struct ena_com_tx_meta ena_meta;
+	struct ena_com_buf *ena_bufs;
+	/* For LLQ, header buffer - pushed to the device mem space */
+	void *push_header;
+
+	enum ena_eth_io_l3_proto_index l3_proto;
+	enum ena_eth_io_l4_proto_index l4_proto;
+	u16 num_bufs;
+	u16 req_id;
+	/* For regular queue, indicate the size of the header
+	 * For LLQ, indicate the size of the pushed buffer
+	 */
+	u16 header_len;
+
+	u8 meta_valid;
+	u8 tso_enable;
+	u8 l3_csum_enable;
+	u8 l4_csum_enable;
+	u8 l4_csum_partial;
+	u8 df; /* Don't fragment */
+};
+
+struct ena_com_rx_ctx {
+	struct ena_com_rx_buf_info *ena_bufs;
+	enum ena_eth_io_l3_proto_index l3_proto;
+	enum ena_eth_io_l4_proto_index l4_proto;
+	bool l3_csum_err;
+	bool l4_csum_err;
+	/* fragmented packet */
+	bool frag;
+	u32 hash;
+	u16 descs;
+	int max_bufs;
+};
+
+int ena_com_prepare_tx(struct ena_com_io_sq *io_sq,
+		       struct ena_com_tx_ctx *ena_tx_ctx,
+		       int *nb_hw_desc);
+
+int ena_com_rx_pkt(struct ena_com_io_cq *io_cq,
+		   struct ena_com_io_sq *io_sq,
+		   struct ena_com_rx_ctx *ena_rx_ctx);
+
+int ena_com_add_single_rx_desc(struct ena_com_io_sq *io_sq,
+			       struct ena_com_buf *ena_buf,
+			       u16 req_id);
+
+int ena_com_tx_comp_req_id_get(struct ena_com_io_cq *io_cq, u16 *req_id);
+
+static inline void ena_com_unmask_intr(struct ena_com_io_cq *io_cq,
+				       struct ena_eth_io_intr_reg *intr_reg)
+{
+	ENA_REG_WRITE32(io_cq->bus, intr_reg->intr_control, io_cq->unmask_reg);
+}
+
+static inline int ena_com_sq_empty_space(struct ena_com_io_sq *io_sq)
+{
+	u16 tail, next_to_comp, cnt;
+
+	next_to_comp = io_sq->next_to_comp;
+	tail = io_sq->tail;
+	cnt = tail - next_to_comp;
+
+	return io_sq->q_depth - 1 - cnt;
+}
+
+static inline int ena_com_write_sq_doorbell(struct ena_com_io_sq *io_sq)
+{
+	u16 tail;
+
+	tail = io_sq->tail;
+
+	ena_trc_dbg("write submission queue doorbell for queue: %d tail: %d\n",
+		    io_sq->qid, tail);
+
+	ENA_REG_WRITE32(io_sq->bus, tail, io_sq->db_addr);
+
+	return 0;
+}
+
+static inline int ena_com_update_dev_comp_head(struct ena_com_io_cq *io_cq)
+{
+	u16 unreported_comp, head;
+	bool need_update;
+
+	head = io_cq->head;
+	unreported_comp = head - io_cq->last_head_update;
+	need_update = unreported_comp > (io_cq->q_depth / ENA_COMP_HEAD_THRESH);
+
+	if (io_cq->cq_head_db_reg && need_update) {
+		ena_trc_dbg("Write completion queue doorbell for queue %d: head: %d\n",
+			    io_cq->qid, head);
+		ENA_REG_WRITE32(io_cq->bus, head, io_cq->cq_head_db_reg);
+		io_cq->last_head_update = head;
+	}
+
+	return 0;
+}
+
+static inline void ena_com_update_numa_node(struct ena_com_io_cq *io_cq,
+					    u8 numa_node)
+{
+	struct ena_eth_io_numa_node_cfg_reg numa_cfg;
+
+	if (!io_cq->numa_node_cfg_reg)
+		return;
+
+	numa_cfg.numa_cfg = (numa_node & ENA_ETH_IO_NUMA_NODE_CFG_REG_NUMA_MASK)
+		| ENA_ETH_IO_NUMA_NODE_CFG_REG_ENABLED_MASK;
+
+	ENA_REG_WRITE32(io_cq->bus, numa_cfg.numa_cfg, io_cq->numa_node_cfg_reg);
+}
+
+static inline void ena_com_comp_ack(struct ena_com_io_sq *io_sq, u16 elem)
+{
+	io_sq->next_to_comp += elem;
+}
+
+#if defined(__cplusplus)
+}
+#endif
+#endif /* ENA_ETH_COM_H_ */
diff --git a/sys/contrib/ena-com/ena_eth_io_defs.h b/sys/contrib/ena-com/ena_eth_io_defs.h
new file mode 100644
index 0000000..c16fed8
--- /dev/null
+++ b/sys/contrib/ena-com/ena_eth_io_defs.h
@@ -0,0 +1,960 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder 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.
+ */
+
+#ifndef _ENA_ETH_IO_H_
+#define _ENA_ETH_IO_H_
+
+enum ena_eth_io_l3_proto_index {
+	ENA_ETH_IO_L3_PROTO_UNKNOWN	= 0,
+
+	ENA_ETH_IO_L3_PROTO_IPV4	= 8,
+
+	ENA_ETH_IO_L3_PROTO_IPV6	= 11,
+
+	ENA_ETH_IO_L3_PROTO_FCOE	= 21,
+
+	ENA_ETH_IO_L3_PROTO_ROCE	= 22,
+};
+
+enum ena_eth_io_l4_proto_index {
+	ENA_ETH_IO_L4_PROTO_UNKNOWN		= 0,
+
+	ENA_ETH_IO_L4_PROTO_TCP			= 12,
+
+	ENA_ETH_IO_L4_PROTO_UDP			= 13,
+
+	ENA_ETH_IO_L4_PROTO_ROUTEABLE_ROCE	= 23,
+};
+
+struct ena_eth_io_tx_desc {
+	/* 15:0 : length - Buffer length in bytes, must
+	 *    include any packet trailers that the ENA supposed
+	 *    to update like End-to-End CRC, Authentication GMAC
+	 *    etc. This length must not include the
+	 *    'Push_Buffer' length. This length must not include
+	 *    the 4-byte added in the end for 802.3 Ethernet FCS
+	 * 21:16 : req_id_hi - Request ID[15:10]
+	 * 22 : reserved22 - MBZ
+	 * 23 : meta_desc - MBZ
+	 * 24 : phase
+	 * 25 : reserved1 - MBZ
+	 * 26 : first - Indicates first descriptor in
+	 *    transaction
+	 * 27 : last - Indicates last descriptor in
+	 *    transaction
+	 * 28 : comp_req - Indicates whether completion
+	 *    should be posted, after packet is transmitted.
+	 *    Valid only for first descriptor
+	 * 30:29 : reserved29 - MBZ
+	 * 31 : reserved31 - MBZ
+	 */
+	uint32_t len_ctrl;
+
+	/* 3:0 : l3_proto_idx - L3 protocol. This field
+	 *    required when l3_csum_en,l3_csum or tso_en are set.
+	 * 4 : DF - IPv4 DF, must be 0 if packet is IPv4 and
+	 *    DF flags of the IPv4 header is 0. Otherwise must
+	 *    be set to 1
+	 * 6:5 : reserved5
+	 * 7 : tso_en - Enable TSO, For TCP only.
+	 * 12:8 : l4_proto_idx - L4 protocol. This field need
+	 *    to be set when l4_csum_en or tso_en are set.
+	 * 13 : l3_csum_en - enable IPv4 header checksum.
+	 * 14 : l4_csum_en - enable TCP/UDP checksum.
+	 * 15 : ethernet_fcs_dis - when set, the controller
+	 *    will not append the 802.3 Ethernet Frame Check
+	 *    Sequence to the packet
+	 * 16 : reserved16
+	 * 17 : l4_csum_partial - L4 partial checksum. when
+	 *    set to 0, the ENA calculates the L4 checksum,
+	 *    where the Destination Address required for the
+	 *    TCP/UDP pseudo-header is taken from the actual
+	 *    packet L3 header. when set to 1, the ENA doesn't
+	 *    calculate the sum of the pseudo-header, instead,
+	 *    the checksum field of the L4 is used instead. When
+	 *    TSO enabled, the checksum of the pseudo-header
+	 *    must not include the tcp length field. L4 partial
+	 *    checksum should be used for IPv6 packet that
+	 *    contains Routing Headers.
+	 * 20:18 : reserved18 - MBZ
+	 * 21 : reserved21 - MBZ
+	 * 31:22 : req_id_lo - Request ID[9:0]
+	 */
+	uint32_t meta_ctrl;
+
+	uint32_t buff_addr_lo;
+
+	/* address high and header size
+	 * 15:0 : addr_hi - Buffer Pointer[47:32]
+	 * 23:16 : reserved16_w2
+	 * 31:24 : header_length - Header length. For Low
+	 *    Latency Queues, this fields indicates the number
+	 *    of bytes written to the headers' memory. For
+	 *    normal queues, if packet is TCP or UDP, and longer
+	 *    than max_header_size, then this field should be
+	 *    set to the sum of L4 header offset and L4 header
+	 *    size(without options), otherwise, this field
+	 *    should be set to 0. For both modes, this field
+	 *    must not exceed the max_header_size.
+	 *    max_header_size value is reported by the Max
+	 *    Queues Feature descriptor
+	 */
+	uint32_t buff_addr_hi_hdr_sz;
+};
+
+struct ena_eth_io_tx_meta_desc {
+	/* 9:0 : req_id_lo - Request ID[9:0]
+	 * 11:10 : reserved10 - MBZ
+	 * 12 : reserved12 - MBZ
+	 * 13 : reserved13 - MBZ
+	 * 14 : ext_valid - if set, offset fields in Word2
+	 *    are valid Also MSS High in Word 0 and bits [31:24]
+	 *    in Word 3
+	 * 15 : reserved15
+	 * 19:16 : mss_hi
+	 * 20 : eth_meta_type - 0: Tx Metadata Descriptor, 1:
+	 *    Extended Metadata Descriptor
+	 * 21 : meta_store - Store extended metadata in queue
+	 *    cache
+	 * 22 : reserved22 - MBZ
+	 * 23 : meta_desc - MBO
+	 * 24 : phase
+	 * 25 : reserved25 - MBZ
+	 * 26 : first - Indicates first descriptor in
+	 *    transaction
+	 * 27 : last - Indicates last descriptor in
+	 *    transaction
+	 * 28 : comp_req - Indicates whether completion
+	 *    should be posted, after packet is transmitted.
+	 *    Valid only for first descriptor
+	 * 30:29 : reserved29 - MBZ
+	 * 31 : reserved31 - MBZ
+	 */
+	uint32_t len_ctrl;
+
+	/* 5:0 : req_id_hi
+	 * 31:6 : reserved6 - MBZ
+	 */
+	uint32_t word1;
+
+	/* 7:0 : l3_hdr_len
+	 * 15:8 : l3_hdr_off
+	 * 21:16 : l4_hdr_len_in_words - counts the L4 header
+	 *    length in words. there is an explicit assumption
+	 *    that L4 header appears right after L3 header and
+	 *    L4 offset is based on l3_hdr_off+l3_hdr_len
+	 * 31:22 : mss_lo
+	 */
+	uint32_t word2;
+
+	uint32_t reserved;
+};
+
+struct ena_eth_io_tx_cdesc {
+	/* Request ID[15:0] */
+	uint16_t req_id;
+
+	uint8_t status;
+
+	/* flags
+	 * 0 : phase
+	 * 7:1 : reserved1
+	 */
+	uint8_t flags;
+
+	uint16_t sub_qid;
+
+	uint16_t sq_head_idx;
+};
+
+struct ena_eth_io_rx_desc {
+	/* In bytes. 0 means 64KB */
+	uint16_t length;
+
+	/* MBZ */
+	uint8_t reserved2;
+
+	/* 0 : phase
+	 * 1 : reserved1 - MBZ
+	 * 2 : first - Indicates first descriptor in
+	 *    transaction
+	 * 3 : last - Indicates last descriptor in transaction
+	 * 4 : comp_req
+	 * 5 : reserved5 - MBO
+	 * 7:6 : reserved6 - MBZ
+	 */
+	uint8_t ctrl;
+
+	uint16_t req_id;
+
+	/* MBZ */
+	uint16_t reserved6;
+
+	uint32_t buff_addr_lo;
+
+	uint16_t buff_addr_hi;
+
+	/* MBZ */
+	uint16_t reserved16_w3;
+};
+
+/* 4-word format Note: all ethernet parsing information are valid only when
+ * last=1
+ */
+struct ena_eth_io_rx_cdesc_base {
+	/* 4:0 : l3_proto_idx
+	 * 6:5 : src_vlan_cnt
+	 * 7 : reserved7 - MBZ
+	 * 12:8 : l4_proto_idx
+	 * 13 : l3_csum_err - when set, either the L3
+	 *    checksum error detected, or, the controller didn't
+	 *    validate the checksum. This bit is valid only when
+	 *    l3_proto_idx indicates IPv4 packet
+	 * 14 : l4_csum_err - when set, either the L4
+	 *    checksum error detected, or, the controller didn't
+	 *    validate the checksum. This bit is valid only when
+	 *    l4_proto_idx indicates TCP/UDP packet, and,
+	 *    ipv4_frag is not set
+	 * 15 : ipv4_frag - Indicates IPv4 fragmented packet
+	 * 23:16 : reserved16
+	 * 24 : phase
+	 * 25 : l3_csum2 - second checksum engine result
+	 * 26 : first - Indicates first descriptor in
+	 *    transaction
+	 * 27 : last - Indicates last descriptor in
+	 *    transaction
+	 * 29:28 : reserved28
+	 * 30 : buffer - 0: Metadata descriptor. 1: Buffer
+	 *    Descriptor was used
+	 * 31 : reserved31
+	 */
+	uint32_t status;
+
+	uint16_t length;
+
+	uint16_t req_id;
+
+	/* 32-bit hash result */
+	uint32_t hash;
+
+	uint16_t sub_qid;
+
+	uint16_t reserved;
+};
+
+/* 8-word format */
+struct ena_eth_io_rx_cdesc_ext {
+	struct ena_eth_io_rx_cdesc_base base;
+
+	uint32_t buff_addr_lo;
+
+	uint16_t buff_addr_hi;
+
+	uint16_t reserved16;
+
+	uint32_t reserved_w6;
+
+	uint32_t reserved_w7;
+};
+
+struct ena_eth_io_intr_reg {
+	/* 14:0 : rx_intr_delay
+	 * 29:15 : tx_intr_delay
+	 * 30 : intr_unmask
+	 * 31 : reserved
+	 */
+	uint32_t intr_control;
+};
+
+struct ena_eth_io_numa_node_cfg_reg {
+	/* 7:0 : numa
+	 * 30:8 : reserved
+	 * 31 : enabled
+	 */
+	uint32_t numa_cfg;
+};
+
+/* tx_desc */
+#define ENA_ETH_IO_TX_DESC_LENGTH_MASK GENMASK(15, 0)
+#define ENA_ETH_IO_TX_DESC_REQ_ID_HI_SHIFT 16
+#define ENA_ETH_IO_TX_DESC_REQ_ID_HI_MASK GENMASK(21, 16)
+#define ENA_ETH_IO_TX_DESC_META_DESC_SHIFT 23
+#define ENA_ETH_IO_TX_DESC_META_DESC_MASK BIT(23)
+#define ENA_ETH_IO_TX_DESC_PHASE_SHIFT 24
+#define ENA_ETH_IO_TX_DESC_PHASE_MASK BIT(24)
+#define ENA_ETH_IO_TX_DESC_FIRST_SHIFT 26
+#define ENA_ETH_IO_TX_DESC_FIRST_MASK BIT(26)
+#define ENA_ETH_IO_TX_DESC_LAST_SHIFT 27
+#define ENA_ETH_IO_TX_DESC_LAST_MASK BIT(27)
+#define ENA_ETH_IO_TX_DESC_COMP_REQ_SHIFT 28
+#define ENA_ETH_IO_TX_DESC_COMP_REQ_MASK BIT(28)
+#define ENA_ETH_IO_TX_DESC_L3_PROTO_IDX_MASK GENMASK(3, 0)
+#define ENA_ETH_IO_TX_DESC_DF_SHIFT 4
+#define ENA_ETH_IO_TX_DESC_DF_MASK BIT(4)
+#define ENA_ETH_IO_TX_DESC_TSO_EN_SHIFT 7
+#define ENA_ETH_IO_TX_DESC_TSO_EN_MASK BIT(7)
+#define ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_SHIFT 8
+#define ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_MASK GENMASK(12, 8)
+#define ENA_ETH_IO_TX_DESC_L3_CSUM_EN_SHIFT 13
+#define ENA_ETH_IO_TX_DESC_L3_CSUM_EN_MASK BIT(13)
+#define ENA_ETH_IO_TX_DESC_L4_CSUM_EN_SHIFT 14
+#define ENA_ETH_IO_TX_DESC_L4_CSUM_EN_MASK BIT(14)
+#define ENA_ETH_IO_TX_DESC_ETHERNET_FCS_DIS_SHIFT 15
+#define ENA_ETH_IO_TX_DESC_ETHERNET_FCS_DIS_MASK BIT(15)
+#define ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_SHIFT 17
+#define ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_MASK BIT(17)
+#define ENA_ETH_IO_TX_DESC_REQ_ID_LO_SHIFT 22
+#define ENA_ETH_IO_TX_DESC_REQ_ID_LO_MASK GENMASK(31, 22)
+#define ENA_ETH_IO_TX_DESC_ADDR_HI_MASK GENMASK(15, 0)
+#define ENA_ETH_IO_TX_DESC_HEADER_LENGTH_SHIFT 24
+#define ENA_ETH_IO_TX_DESC_HEADER_LENGTH_MASK GENMASK(31, 24)
+
+/* tx_meta_desc */
+#define ENA_ETH_IO_TX_META_DESC_REQ_ID_LO_MASK GENMASK(9, 0)
+#define ENA_ETH_IO_TX_META_DESC_EXT_VALID_SHIFT 14
+#define ENA_ETH_IO_TX_META_DESC_EXT_VALID_MASK BIT(14)
+#define ENA_ETH_IO_TX_META_DESC_MSS_HI_SHIFT 16
+#define ENA_ETH_IO_TX_META_DESC_MSS_HI_MASK GENMASK(19, 16)
+#define ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_SHIFT 20
+#define ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_MASK BIT(20)
+#define ENA_ETH_IO_TX_META_DESC_META_STORE_SHIFT 21
+#define ENA_ETH_IO_TX_META_DESC_META_STORE_MASK BIT(21)
+#define ENA_ETH_IO_TX_META_DESC_META_DESC_SHIFT 23
+#define ENA_ETH_IO_TX_META_DESC_META_DESC_MASK BIT(23)
+#define ENA_ETH_IO_TX_META_DESC_PHASE_SHIFT 24
+#define ENA_ETH_IO_TX_META_DESC_PHASE_MASK BIT(24)
+#define ENA_ETH_IO_TX_META_DESC_FIRST_SHIFT 26
+#define ENA_ETH_IO_TX_META_DESC_FIRST_MASK BIT(26)
+#define ENA_ETH_IO_TX_META_DESC_LAST_SHIFT 27
+#define ENA_ETH_IO_TX_META_DESC_LAST_MASK BIT(27)
+#define ENA_ETH_IO_TX_META_DESC_COMP_REQ_SHIFT 28
+#define ENA_ETH_IO_TX_META_DESC_COMP_REQ_MASK BIT(28)
+#define ENA_ETH_IO_TX_META_DESC_REQ_ID_HI_MASK GENMASK(5, 0)
+#define ENA_ETH_IO_TX_META_DESC_L3_HDR_LEN_MASK GENMASK(7, 0)
+#define ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_SHIFT 8
+#define ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_MASK GENMASK(15, 8)
+#define ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_SHIFT 16
+#define ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_MASK GENMASK(21, 16)
+#define ENA_ETH_IO_TX_META_DESC_MSS_LO_SHIFT 22
+#define ENA_ETH_IO_TX_META_DESC_MSS_LO_MASK GENMASK(31, 22)
+
+/* tx_cdesc */
+#define ENA_ETH_IO_TX_CDESC_PHASE_MASK BIT(0)
+
+/* rx_desc */
+#define ENA_ETH_IO_RX_DESC_PHASE_MASK BIT(0)
+#define ENA_ETH_IO_RX_DESC_FIRST_SHIFT 2
+#define ENA_ETH_IO_RX_DESC_FIRST_MASK BIT(2)
+#define ENA_ETH_IO_RX_DESC_LAST_SHIFT 3
+#define ENA_ETH_IO_RX_DESC_LAST_MASK BIT(3)
+#define ENA_ETH_IO_RX_DESC_COMP_REQ_SHIFT 4
+#define ENA_ETH_IO_RX_DESC_COMP_REQ_MASK BIT(4)
+
+/* rx_cdesc_base */
+#define ENA_ETH_IO_RX_CDESC_BASE_L3_PROTO_IDX_MASK GENMASK(4, 0)
+#define ENA_ETH_IO_RX_CDESC_BASE_SRC_VLAN_CNT_SHIFT 5
+#define ENA_ETH_IO_RX_CDESC_BASE_SRC_VLAN_CNT_MASK GENMASK(6, 5)
+#define ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_SHIFT 8
+#define ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_MASK GENMASK(12, 8)
+#define ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_SHIFT 13
+#define ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_MASK BIT(13)
+#define ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_SHIFT 14
+#define ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_MASK BIT(14)
+#define ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_SHIFT 15
+#define ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_MASK BIT(15)
+#define ENA_ETH_IO_RX_CDESC_BASE_PHASE_SHIFT 24
+#define ENA_ETH_IO_RX_CDESC_BASE_PHASE_MASK BIT(24)
+#define ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM2_SHIFT 25
+#define ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM2_MASK BIT(25)
+#define ENA_ETH_IO_RX_CDESC_BASE_FIRST_SHIFT 26
+#define ENA_ETH_IO_RX_CDESC_BASE_FIRST_MASK BIT(26)
+#define ENA_ETH_IO_RX_CDESC_BASE_LAST_SHIFT 27
+#define ENA_ETH_IO_RX_CDESC_BASE_LAST_MASK BIT(27)
+#define ENA_ETH_IO_RX_CDESC_BASE_BUFFER_SHIFT 30
+#define ENA_ETH_IO_RX_CDESC_BASE_BUFFER_MASK BIT(30)
+
+/* intr_reg */
+#define ENA_ETH_IO_INTR_REG_RX_INTR_DELAY_MASK GENMASK(14, 0)
+#define ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_SHIFT 15
+#define ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_MASK GENMASK(29, 15)
+#define ENA_ETH_IO_INTR_REG_INTR_UNMASK_SHIFT 30
+#define ENA_ETH_IO_INTR_REG_INTR_UNMASK_MASK BIT(30)
+
+/* numa_node_cfg_reg */
+#define ENA_ETH_IO_NUMA_NODE_CFG_REG_NUMA_MASK GENMASK(7, 0)
+#define ENA_ETH_IO_NUMA_NODE_CFG_REG_ENABLED_SHIFT 31
+#define ENA_ETH_IO_NUMA_NODE_CFG_REG_ENABLED_MASK BIT(31)
+
+#if !defined(ENA_DEFS_LINUX_MAINLINE)
+static inline uint32_t get_ena_eth_io_tx_desc_length(const struct ena_eth_io_tx_desc *p)
+{
+	return p->len_ctrl & ENA_ETH_IO_TX_DESC_LENGTH_MASK;
+}
+
+static inline void set_ena_eth_io_tx_desc_length(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->len_ctrl |= val & ENA_ETH_IO_TX_DESC_LENGTH_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_req_id_hi(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_DESC_REQ_ID_HI_MASK) >> ENA_ETH_IO_TX_DESC_REQ_ID_HI_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_req_id_hi(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_DESC_REQ_ID_HI_SHIFT) & ENA_ETH_IO_TX_DESC_REQ_ID_HI_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_meta_desc(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_DESC_META_DESC_MASK) >> ENA_ETH_IO_TX_DESC_META_DESC_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_meta_desc(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_DESC_META_DESC_SHIFT) & ENA_ETH_IO_TX_DESC_META_DESC_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_phase(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_DESC_PHASE_MASK) >> ENA_ETH_IO_TX_DESC_PHASE_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_phase(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_DESC_PHASE_SHIFT) & ENA_ETH_IO_TX_DESC_PHASE_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_first(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_DESC_FIRST_MASK) >> ENA_ETH_IO_TX_DESC_FIRST_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_first(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_DESC_FIRST_SHIFT) & ENA_ETH_IO_TX_DESC_FIRST_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_last(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_DESC_LAST_MASK) >> ENA_ETH_IO_TX_DESC_LAST_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_last(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_DESC_LAST_SHIFT) & ENA_ETH_IO_TX_DESC_LAST_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_comp_req(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_DESC_COMP_REQ_MASK) >> ENA_ETH_IO_TX_DESC_COMP_REQ_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_comp_req(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_DESC_COMP_REQ_SHIFT) & ENA_ETH_IO_TX_DESC_COMP_REQ_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_l3_proto_idx(const struct ena_eth_io_tx_desc *p)
+{
+	return p->meta_ctrl & ENA_ETH_IO_TX_DESC_L3_PROTO_IDX_MASK;
+}
+
+static inline void set_ena_eth_io_tx_desc_l3_proto_idx(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->meta_ctrl |= val & ENA_ETH_IO_TX_DESC_L3_PROTO_IDX_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_DF(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->meta_ctrl & ENA_ETH_IO_TX_DESC_DF_MASK) >> ENA_ETH_IO_TX_DESC_DF_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_DF(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->meta_ctrl |= (val << ENA_ETH_IO_TX_DESC_DF_SHIFT) & ENA_ETH_IO_TX_DESC_DF_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_tso_en(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->meta_ctrl & ENA_ETH_IO_TX_DESC_TSO_EN_MASK) >> ENA_ETH_IO_TX_DESC_TSO_EN_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_tso_en(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->meta_ctrl |= (val << ENA_ETH_IO_TX_DESC_TSO_EN_SHIFT) & ENA_ETH_IO_TX_DESC_TSO_EN_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_l4_proto_idx(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->meta_ctrl & ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_MASK) >> ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_l4_proto_idx(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->meta_ctrl |= (val << ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_SHIFT) & ENA_ETH_IO_TX_DESC_L4_PROTO_IDX_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_l3_csum_en(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->meta_ctrl & ENA_ETH_IO_TX_DESC_L3_CSUM_EN_MASK) >> ENA_ETH_IO_TX_DESC_L3_CSUM_EN_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_l3_csum_en(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->meta_ctrl |= (val << ENA_ETH_IO_TX_DESC_L3_CSUM_EN_SHIFT) & ENA_ETH_IO_TX_DESC_L3_CSUM_EN_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_l4_csum_en(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->meta_ctrl & ENA_ETH_IO_TX_DESC_L4_CSUM_EN_MASK) >> ENA_ETH_IO_TX_DESC_L4_CSUM_EN_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_l4_csum_en(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->meta_ctrl |= (val << ENA_ETH_IO_TX_DESC_L4_CSUM_EN_SHIFT) & ENA_ETH_IO_TX_DESC_L4_CSUM_EN_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_ethernet_fcs_dis(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->meta_ctrl & ENA_ETH_IO_TX_DESC_ETHERNET_FCS_DIS_MASK) >> ENA_ETH_IO_TX_DESC_ETHERNET_FCS_DIS_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_ethernet_fcs_dis(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->meta_ctrl |= (val << ENA_ETH_IO_TX_DESC_ETHERNET_FCS_DIS_SHIFT) & ENA_ETH_IO_TX_DESC_ETHERNET_FCS_DIS_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_l4_csum_partial(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->meta_ctrl & ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_MASK) >> ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_l4_csum_partial(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->meta_ctrl |= (val << ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_SHIFT) & ENA_ETH_IO_TX_DESC_L4_CSUM_PARTIAL_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_req_id_lo(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->meta_ctrl & ENA_ETH_IO_TX_DESC_REQ_ID_LO_MASK) >> ENA_ETH_IO_TX_DESC_REQ_ID_LO_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_req_id_lo(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->meta_ctrl |= (val << ENA_ETH_IO_TX_DESC_REQ_ID_LO_SHIFT) & ENA_ETH_IO_TX_DESC_REQ_ID_LO_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_addr_hi(const struct ena_eth_io_tx_desc *p)
+{
+	return p->buff_addr_hi_hdr_sz & ENA_ETH_IO_TX_DESC_ADDR_HI_MASK;
+}
+
+static inline void set_ena_eth_io_tx_desc_addr_hi(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->buff_addr_hi_hdr_sz |= val & ENA_ETH_IO_TX_DESC_ADDR_HI_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_desc_header_length(const struct ena_eth_io_tx_desc *p)
+{
+	return (p->buff_addr_hi_hdr_sz & ENA_ETH_IO_TX_DESC_HEADER_LENGTH_MASK) >> ENA_ETH_IO_TX_DESC_HEADER_LENGTH_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_desc_header_length(struct ena_eth_io_tx_desc *p, uint32_t val)
+{
+	p->buff_addr_hi_hdr_sz |= (val << ENA_ETH_IO_TX_DESC_HEADER_LENGTH_SHIFT) & ENA_ETH_IO_TX_DESC_HEADER_LENGTH_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_req_id_lo(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return p->len_ctrl & ENA_ETH_IO_TX_META_DESC_REQ_ID_LO_MASK;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_req_id_lo(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= val & ENA_ETH_IO_TX_META_DESC_REQ_ID_LO_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_ext_valid(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_META_DESC_EXT_VALID_MASK) >> ENA_ETH_IO_TX_META_DESC_EXT_VALID_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_ext_valid(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_META_DESC_EXT_VALID_SHIFT) & ENA_ETH_IO_TX_META_DESC_EXT_VALID_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_mss_hi(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_META_DESC_MSS_HI_MASK) >> ENA_ETH_IO_TX_META_DESC_MSS_HI_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_mss_hi(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_META_DESC_MSS_HI_SHIFT) & ENA_ETH_IO_TX_META_DESC_MSS_HI_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_eth_meta_type(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_MASK) >> ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_eth_meta_type(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_SHIFT) & ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_meta_store(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_META_DESC_META_STORE_MASK) >> ENA_ETH_IO_TX_META_DESC_META_STORE_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_meta_store(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_META_DESC_META_STORE_SHIFT) & ENA_ETH_IO_TX_META_DESC_META_STORE_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_meta_desc(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_META_DESC_META_DESC_MASK) >> ENA_ETH_IO_TX_META_DESC_META_DESC_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_meta_desc(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_META_DESC_META_DESC_SHIFT) & ENA_ETH_IO_TX_META_DESC_META_DESC_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_phase(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_META_DESC_PHASE_MASK) >> ENA_ETH_IO_TX_META_DESC_PHASE_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_phase(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_META_DESC_PHASE_SHIFT) & ENA_ETH_IO_TX_META_DESC_PHASE_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_first(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_META_DESC_FIRST_MASK) >> ENA_ETH_IO_TX_META_DESC_FIRST_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_first(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_META_DESC_FIRST_SHIFT) & ENA_ETH_IO_TX_META_DESC_FIRST_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_last(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_META_DESC_LAST_MASK) >> ENA_ETH_IO_TX_META_DESC_LAST_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_last(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_META_DESC_LAST_SHIFT) & ENA_ETH_IO_TX_META_DESC_LAST_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_comp_req(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->len_ctrl & ENA_ETH_IO_TX_META_DESC_COMP_REQ_MASK) >> ENA_ETH_IO_TX_META_DESC_COMP_REQ_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_comp_req(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->len_ctrl |= (val << ENA_ETH_IO_TX_META_DESC_COMP_REQ_SHIFT) & ENA_ETH_IO_TX_META_DESC_COMP_REQ_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_req_id_hi(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return p->word1 & ENA_ETH_IO_TX_META_DESC_REQ_ID_HI_MASK;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_req_id_hi(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->word1 |= val & ENA_ETH_IO_TX_META_DESC_REQ_ID_HI_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_l3_hdr_len(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return p->word2 & ENA_ETH_IO_TX_META_DESC_L3_HDR_LEN_MASK;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_l3_hdr_len(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->word2 |= val & ENA_ETH_IO_TX_META_DESC_L3_HDR_LEN_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_l3_hdr_off(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->word2 & ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_MASK) >> ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_l3_hdr_off(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->word2 |= (val << ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_SHIFT) & ENA_ETH_IO_TX_META_DESC_L3_HDR_OFF_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_l4_hdr_len_in_words(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->word2 & ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_MASK) >> ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_l4_hdr_len_in_words(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->word2 |= (val << ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_SHIFT) & ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_tx_meta_desc_mss_lo(const struct ena_eth_io_tx_meta_desc *p)
+{
+	return (p->word2 & ENA_ETH_IO_TX_META_DESC_MSS_LO_MASK) >> ENA_ETH_IO_TX_META_DESC_MSS_LO_SHIFT;
+}
+
+static inline void set_ena_eth_io_tx_meta_desc_mss_lo(struct ena_eth_io_tx_meta_desc *p, uint32_t val)
+{
+	p->word2 |= (val << ENA_ETH_IO_TX_META_DESC_MSS_LO_SHIFT) & ENA_ETH_IO_TX_META_DESC_MSS_LO_MASK;
+}
+
+static inline uint8_t get_ena_eth_io_tx_cdesc_phase(const struct ena_eth_io_tx_cdesc *p)
+{
+	return p->flags & ENA_ETH_IO_TX_CDESC_PHASE_MASK;
+}
+
+static inline void set_ena_eth_io_tx_cdesc_phase(struct ena_eth_io_tx_cdesc *p, uint8_t val)
+{
+	p->flags |= val & ENA_ETH_IO_TX_CDESC_PHASE_MASK;
+}
+
+static inline uint8_t get_ena_eth_io_rx_desc_phase(const struct ena_eth_io_rx_desc *p)
+{
+	return p->ctrl & ENA_ETH_IO_RX_DESC_PHASE_MASK;
+}
+
+static inline void set_ena_eth_io_rx_desc_phase(struct ena_eth_io_rx_desc *p, uint8_t val)
+{
+	p->ctrl |= val & ENA_ETH_IO_RX_DESC_PHASE_MASK;
+}
+
+static inline uint8_t get_ena_eth_io_rx_desc_first(const struct ena_eth_io_rx_desc *p)
+{
+	return (p->ctrl & ENA_ETH_IO_RX_DESC_FIRST_MASK) >> ENA_ETH_IO_RX_DESC_FIRST_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_desc_first(struct ena_eth_io_rx_desc *p, uint8_t val)
+{
+	p->ctrl |= (val << ENA_ETH_IO_RX_DESC_FIRST_SHIFT) & ENA_ETH_IO_RX_DESC_FIRST_MASK;
+}
+
+static inline uint8_t get_ena_eth_io_rx_desc_last(const struct ena_eth_io_rx_desc *p)
+{
+	return (p->ctrl & ENA_ETH_IO_RX_DESC_LAST_MASK) >> ENA_ETH_IO_RX_DESC_LAST_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_desc_last(struct ena_eth_io_rx_desc *p, uint8_t val)
+{
+	p->ctrl |= (val << ENA_ETH_IO_RX_DESC_LAST_SHIFT) & ENA_ETH_IO_RX_DESC_LAST_MASK;
+}
+
+static inline uint8_t get_ena_eth_io_rx_desc_comp_req(const struct ena_eth_io_rx_desc *p)
+{
+	return (p->ctrl & ENA_ETH_IO_RX_DESC_COMP_REQ_MASK) >> ENA_ETH_IO_RX_DESC_COMP_REQ_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_desc_comp_req(struct ena_eth_io_rx_desc *p, uint8_t val)
+{
+	p->ctrl |= (val << ENA_ETH_IO_RX_DESC_COMP_REQ_SHIFT) & ENA_ETH_IO_RX_DESC_COMP_REQ_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_l3_proto_idx(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return p->status & ENA_ETH_IO_RX_CDESC_BASE_L3_PROTO_IDX_MASK;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_l3_proto_idx(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= val & ENA_ETH_IO_RX_CDESC_BASE_L3_PROTO_IDX_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_src_vlan_cnt(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_SRC_VLAN_CNT_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_SRC_VLAN_CNT_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_src_vlan_cnt(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_SRC_VLAN_CNT_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_SRC_VLAN_CNT_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_l4_proto_idx(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_l4_proto_idx(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_L4_PROTO_IDX_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_l3_csum_err(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_l3_csum_err(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM_ERR_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_l4_csum_err(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_l4_csum_err(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_L4_CSUM_ERR_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_ipv4_frag(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_ipv4_frag(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_IPV4_FRAG_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_phase(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_PHASE_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_PHASE_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_phase(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_PHASE_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_PHASE_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_l3_csum2(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM2_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM2_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_l3_csum2(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM2_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_L3_CSUM2_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_first(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_FIRST_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_FIRST_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_first(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_FIRST_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_FIRST_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_last(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_LAST_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_LAST_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_last(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_LAST_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_LAST_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_rx_cdesc_base_buffer(const struct ena_eth_io_rx_cdesc_base *p)
+{
+	return (p->status & ENA_ETH_IO_RX_CDESC_BASE_BUFFER_MASK) >> ENA_ETH_IO_RX_CDESC_BASE_BUFFER_SHIFT;
+}
+
+static inline void set_ena_eth_io_rx_cdesc_base_buffer(struct ena_eth_io_rx_cdesc_base *p, uint32_t val)
+{
+	p->status |= (val << ENA_ETH_IO_RX_CDESC_BASE_BUFFER_SHIFT) & ENA_ETH_IO_RX_CDESC_BASE_BUFFER_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_intr_reg_rx_intr_delay(const struct ena_eth_io_intr_reg *p)
+{
+	return p->intr_control & ENA_ETH_IO_INTR_REG_RX_INTR_DELAY_MASK;
+}
+
+static inline void set_ena_eth_io_intr_reg_rx_intr_delay(struct ena_eth_io_intr_reg *p, uint32_t val)
+{
+	p->intr_control |= val & ENA_ETH_IO_INTR_REG_RX_INTR_DELAY_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_intr_reg_tx_intr_delay(const struct ena_eth_io_intr_reg *p)
+{
+	return (p->intr_control & ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_MASK) >> ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_SHIFT;
+}
+
+static inline void set_ena_eth_io_intr_reg_tx_intr_delay(struct ena_eth_io_intr_reg *p, uint32_t val)
+{
+	p->intr_control |= (val << ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_SHIFT) & ENA_ETH_IO_INTR_REG_TX_INTR_DELAY_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_intr_reg_intr_unmask(const struct ena_eth_io_intr_reg *p)
+{
+	return (p->intr_control & ENA_ETH_IO_INTR_REG_INTR_UNMASK_MASK) >> ENA_ETH_IO_INTR_REG_INTR_UNMASK_SHIFT;
+}
+
+static inline void set_ena_eth_io_intr_reg_intr_unmask(struct ena_eth_io_intr_reg *p, uint32_t val)
+{
+	p->intr_control |= (val << ENA_ETH_IO_INTR_REG_INTR_UNMASK_SHIFT) & ENA_ETH_IO_INTR_REG_INTR_UNMASK_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_numa_node_cfg_reg_numa(const struct ena_eth_io_numa_node_cfg_reg *p)
+{
+	return p->numa_cfg & ENA_ETH_IO_NUMA_NODE_CFG_REG_NUMA_MASK;
+}
+
+static inline void set_ena_eth_io_numa_node_cfg_reg_numa(struct ena_eth_io_numa_node_cfg_reg *p, uint32_t val)
+{
+	p->numa_cfg |= val & ENA_ETH_IO_NUMA_NODE_CFG_REG_NUMA_MASK;
+}
+
+static inline uint32_t get_ena_eth_io_numa_node_cfg_reg_enabled(const struct ena_eth_io_numa_node_cfg_reg *p)
+{
+	return (p->numa_cfg & ENA_ETH_IO_NUMA_NODE_CFG_REG_ENABLED_MASK) >> ENA_ETH_IO_NUMA_NODE_CFG_REG_ENABLED_SHIFT;
+}
+
+static inline void set_ena_eth_io_numa_node_cfg_reg_enabled(struct ena_eth_io_numa_node_cfg_reg *p, uint32_t val)
+{
+	p->numa_cfg |= (val << ENA_ETH_IO_NUMA_NODE_CFG_REG_ENABLED_SHIFT) & ENA_ETH_IO_NUMA_NODE_CFG_REG_ENABLED_MASK;
+}
+
+#endif /* !defined(ENA_DEFS_LINUX_MAINLINE) */
+#endif /*_ENA_ETH_IO_H_ */
diff --git a/sys/contrib/ena-com/ena_plat.h b/sys/contrib/ena-com/ena_plat.h
new file mode 100644
index 0000000..481f7aa
--- /dev/null
+++ b/sys/contrib/ena-com/ena_plat.h
@@ -0,0 +1,376 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder 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.
+ */
+
+#ifndef ENA_PLAT_H_
+#define ENA_PLAT_H_
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <sys/bus.h>
+#include <sys/condvar.h>
+#include <sys/endian.h>
+#include <sys/kernel.h>
+#include <sys/kthread.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+#include <sys/proc.h>
+#include <sys/smp.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/sysctl.h>
+#include <sys/taskqueue.h>
+#include <sys/eventhandler.h>
+#include <sys/types.h>
+#include <sys/timetc.h>
+#include <sys/cdefs.h>
+
+#include <machine/atomic.h>
+#include <machine/bus.h>
+#include <machine/in_cksum.h>
+#include <machine/pcpu.h>
+#include <machine/resource.h>
+
+#include <net/bpf.h>
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_arp.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+
+#include <net/if_types.h>
+#include <net/if_vlan_var.h>
+
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <netinet/if_ether.h>
+#include <netinet/ip.h>
+#include <netinet/ip6.h>
+#include <netinet/tcp.h>
+#include <netinet/tcp_lro.h>
+#include <netinet/udp.h>
+
+#include <dev/led/led.h>
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
+
+extern struct ena_bus_space ebs;
+
+/* Levels */
+#define ENA_ALERT 	(1 << 0) /* Alerts are providing more error info.     */
+#define ENA_WARNING 	(1 << 1) /* Driver output is more error sensitive.    */
+#define ENA_INFO 	(1 << 2) /* Provides additional driver info. 	      */
+#define ENA_DBG 	(1 << 3) /* Driver output for debugging.	      */
+/* Detailed info that will be printed with ENA_INFO or ENA_DEBUG flag. 	      */
+#define ENA_TXPTH 	(1 << 4) /* Allows TX path tracing. 		      */
+#define ENA_RXPTH 	(1 << 5) /* Allows RX path tracing.		      */
+#define ENA_RSC 	(1 << 6) /* Goes with TXPTH or RXPTH, free/alloc res. */
+#define ENA_IOQ 	(1 << 7) /* Detailed info about IO queues. 	      */
+#define ENA_ADMQ	(1 << 8) /* Detailed info about admin queue. 	      */
+
+#ifndef ENA_DEBUG_LEVEL
+#define ENA_DEBUG_LEVEL (ENA_ALERT | ENA_WARNING)
+#endif
+
+#ifdef ENA_TRACE
+#define ena_trace_raw(level, fmt, args...)			\
+	do {							\
+		if (((level) & ENA_DEBUG_LEVEL) != (level))	\
+			break;					\
+		printf(fmt, ##args);				\
+	} while (0)
+
+#define ena_trace(level, fmt, args...)				\
+	ena_trace_raw(level, "%s() [TID:%d]: "			\
+	    fmt " \n", __func__, curthread->td_tid, ##args)
+
+#else /* ENA_TRACE */
+#define ena_trace_raw(...)
+#define ena_trace(...)
+#endif /* ENA_TRACE */
+
+#define ena_trc_dbg(format, arg...) 	ena_trace(ENA_DBG, format, ##arg)
+#define ena_trc_info(format, arg...) 	ena_trace(ENA_INFO, format, ##arg)
+#define ena_trc_warn(format, arg...) 	ena_trace(ENA_WARNING, format, ##arg)
+#define ena_trc_err(format, arg...) 	ena_trace(ENA_ALERT, format, ##arg)
+
+#define unlikely(x)	__predict_false(x)
+#define likely(x)  	__predict_true(x)
+
+#define __iomem
+#define ____cacheline_aligned __aligned(CACHE_LINE_SIZE)
+
+#define MAX_ERRNO 4095
+#define IS_ERR_VALUE(x) unlikely((x) <= (unsigned long)MAX_ERRNO)
+
+#define WARN_ON(condition)						\
+	do {								\
+		int __ret_warn_on = !!(condition);			\
+		if (unlikely(__ret_warn_on))				\
+			printf("%s %s", __FUNCTION__, __FILE__);	\
+		unlikely(__ret_warn_on);				\
+	} while (0)
+
+#define ENA_ASSERT(cond, format, arg...)				\
+	do {								\
+		if (unlikely(!(cond))) {				\
+			ena_trc_err(					\
+				"Assert failed on %s:%s:%d:" format,	\
+				__FILE__, __func__, __LINE__, ##arg);	\
+			WARN_ON(cond);					\
+		}							\
+	} while (0)
+
+#define ENA_WARN(cond, format, arg...)					\
+	do {								\
+		if (unlikely((cond))) {					\
+			ena_trc_warn(format, ##arg);			\
+		}							\
+	} while (0)
+
+static inline long IS_ERR(const void *ptr)
+{
+	return IS_ERR_VALUE((unsigned long)ptr);
+}
+
+static inline void *ERR_PTR(long error)
+{
+	return (void *)error;
+}
+
+static inline long PTR_ERR(const void *ptr)
+{
+	return (long) ptr;
+}
+
+#define GENMASK(h, l)		(((1U << ((h) - (l) + 1)) - 1) << (l))
+#define GENMASK_ULL(h, l)	(((~0ULL) << (l)) & (~0ULL >> (64 - 1 - (h))))
+#define BIT(x)			(1 << (x))
+
+#define ENA_ABORT() 		BUG()
+#define BUG() 			panic("ENA BUG")
+
+#define SZ_256			(256)
+#define SZ_4K			(4096)
+
+#define	ENA_COM_OK		0
+#define ENA_COM_FAULT		EFAULT
+#define	ENA_COM_INVAL		EINVAL
+#define ENA_COM_NO_MEM		ENOMEM
+#define	ENA_COM_NO_SPACE	ENOSPC
+#define ENA_COM_TRY_AGAIN	-1
+#define	ENA_COM_NO_DEVICE	ENODEV
+#define	ENA_COM_PERMISSION	EPERM
+#define ENA_COM_TIMER_EXPIRED	ETIMEDOUT
+
+#define ENA_MSLEEP(x) 		pause_sbt("ena", SBT_1MS * (x), SBT_1MS, 0)
+#define ENA_UDELAY(x) 		DELAY(x)
+#define ENA_GET_SYSTEM_TIMEOUT(timeout_us) \
+    ((long)cputick2usec(cpu_ticks()) + (timeout_us))
+#define ENA_TIME_EXPIRE(timeout)  ((timeout) < (long)cputick2usec(cpu_ticks()))
+#define ENA_MIGHT_SLEEP()
+
+#define min_t(type, _x, _y) ((type)(_x) < (type)(_y) ? (type)(_x) : (type)(_y))
+#define max_t(type, _x, _y) ((type)(_x) > (type)(_y) ? (type)(_x) : (type)(_y))
+
+#define ENA_MIN32(x,y) 	MIN(x, y)
+#define ENA_MIN16(x,y)	MIN(x, y)
+#define ENA_MIN8(x,y)	MIN(x, y)
+
+#define ENA_MAX32(x,y) 	MAX(x, y)
+#define ENA_MAX16(x,y) 	MAX(x, y)
+#define ENA_MAX8(x,y) 	MAX(x, y)
+
+/* Spinlock related methods */
+#define ena_spinlock_t 	struct mtx
+#define ENA_SPINLOCK_INIT(spinlock)				\
+	mtx_init(&(spinlock), "ena_spin", NULL, MTX_SPIN)
+#define ENA_SPINLOCK_DESTROY(spinlock)				\
+	do {							\
+		if (mtx_initialized(&(spinlock)))		\
+		    mtx_destroy(&(spinlock));			\
+	} while (0)
+#define ENA_SPINLOCK_LOCK(spinlock, flags)			\
+	do {							\
+		(void)(flags);					\
+		mtx_lock_spin(&(spinlock));			\
+	} while (0)
+#define ENA_SPINLOCK_UNLOCK(spinlock, flags)			\
+	do {							\
+		(void)(flags);					\
+		mtx_unlock_spin(&(spinlock));			\
+	} while (0)
+
+
+/* Wait queue related methods */
+#define ena_wait_event_t struct { struct cv wq; struct mtx mtx; }
+#define ENA_WAIT_EVENT_INIT(waitqueue)					\
+	do {								\
+		cv_init(&((waitqueue).wq), "cv");			\
+		mtx_init(&((waitqueue).mtx), "wq", NULL, MTX_DEF);	\
+	} while (0)
+#define ENA_WAIT_EVENT_DESTROY(waitqueue)				\
+	do {								\
+		cv_destroy(&((waitqueue).wq));				\
+		mtx_destroy(&((waitqueue).mtx));			\
+	} while (0)
+#define ENA_WAIT_EVENT_CLEAR(waitqueue)					\
+	cv_init(&((waitqueue).wq), (waitqueue).wq.cv_description)
+#define ENA_WAIT_EVENT_WAIT(waitqueue, timeout_us)			\
+	do {								\
+		mtx_lock(&((waitqueue).mtx));				\
+		cv_timedwait(&((waitqueue).wq), &((waitqueue).mtx),	\
+		    timeout_us * hz / 1000 / 1000 );			\
+		mtx_unlock(&((waitqueue).mtx));				\
+	} while (0)
+#define ENA_WAIT_EVENT_SIGNAL(waitqueue) cv_broadcast(&((waitqueue).wq))
+
+#define dma_addr_t 	bus_addr_t
+#define u8 		uint8_t
+#define u16 		uint16_t
+#define u32 		uint32_t
+#define u64 		uint64_t
+
+typedef struct {
+	bus_addr_t              paddr;
+	caddr_t                 vaddr;
+        bus_dma_tag_t           tag;
+	bus_dmamap_t            map;
+        bus_dma_segment_t       seg;
+	int                     nseg;
+} ena_mem_handle_t;
+
+struct ena_bus {
+	bus_space_handle_t 	reg_bar_h;
+	bus_space_tag_t 	reg_bar_t;
+	bus_space_handle_t	mem_bar_h;
+	bus_space_tag_t 	mem_bar_t;
+};
+
+typedef uint32_t ena_atomic32_t;
+
+void	ena_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nseg,
+    int error);
+int	ena_dma_alloc(device_t dmadev, bus_size_t size, ena_mem_handle_t *dma,
+    int mapflags);
+
+#define ENA_MEM_ALLOC(dmadev, size) malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO)
+#define ENA_MEM_ALLOC_NODE(dmadev, size, virt, node, dev_node) (virt = NULL)
+#define ENA_MEM_FREE(dmadev, ptr) free(ptr, M_DEVBUF)
+#define ENA_MEM_ALLOC_COHERENT_NODE(dmadev, size, virt, phys, handle, node, \
+    dev_node)								\
+	do {								\
+		((virt) = NULL);					\
+		(void)(dev_node);					\
+	} while (0)
+
+#define ENA_MEM_ALLOC_COHERENT(dmadev, size, virt, phys, dma)		\
+	do {								\
+		ena_dma_alloc((dmadev), (size), &(dma), 0);		\
+		(virt) = (void *)(dma).vaddr;				\
+		(phys) = (dma).paddr;					\
+	} while (0)
+
+#define ENA_MEM_FREE_COHERENT(dmadev, size, virt, phys, dma)		\
+	do {								\
+		(void)size;						\
+		bus_dmamap_unload((dma).tag, (dma).map);		\
+		bus_dmamem_free((dma).tag, (virt), (dma).map);		\
+		bus_dma_tag_destroy((dma).tag);				\
+		(dma).tag = NULL;					\
+		(virt) = NULL;						\
+	} while (0)
+
+/* Register R/W methods */
+#define ENA_REG_WRITE32(bus, value, offset)				\
+	bus_space_write_4(						\
+			  ((struct ena_bus*)bus)->reg_bar_t,		\
+			  ((struct ena_bus*)bus)->reg_bar_h,		\
+			  (bus_size_t)(offset), (value))
+
+#define ENA_REG_READ32(bus, offset)					\
+	bus_space_read_4(						\
+			 ((struct ena_bus*)bus)->reg_bar_t,		\
+			 ((struct ena_bus*)bus)->reg_bar_h,		\
+			 (bus_size_t)(offset))
+
+#define time_after(a,b)	((long)((unsigned long)(b) - (unsigned long)(a)) < 0)
+
+#define VLAN_HLEN 	sizeof(struct ether_vlan_header)
+#define CSUM_OFFLOAD 	(CSUM_IP|CSUM_TCP|CSUM_UDP)
+
+#if defined(__i386__) || defined(__amd64__)
+static __inline
+void prefetch(void *x)
+{
+	__asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
+}
+#else
+#define prefetch(x)
+#endif
+
+/* DMA buffers access */
+#define	dma_unmap_addr(p, name)			((p)->dma->name)
+#define	dma_unmap_addr_set(p, name, v)		(((p)->dma->name) = (v))
+#define	dma_unmap_len(p, name)			((p)->name)
+#define	dma_unmap_len_set(p, name, v)		(((p)->name) = (v))
+
+#define memcpy_toio memcpy
+
+#define ATOMIC32_INC(I32_PTR)		atomic_add_int(I32_PTR, 1)
+#define ATOMIC32_DEC(I32_PTR) 		atomic_add_int(I32_PTR, -1)
+#define ATOMIC32_READ(I32_PTR) 		atomic_load_acq_int(I32_PTR)
+#define ATOMIC32_SET(I32_PTR, VAL) 	atomic_store_rel_int(I32_PTR, VAL)
+
+#define	barrier() __asm__ __volatile__("": : :"memory")
+#define	ACCESS_ONCE(x) (*(volatile __typeof(x) *)&(x))
+#define READ_ONCE(x)  ({			\
+			__typeof(x) __var;	\
+			barrier();		\
+			__var = ACCESS_ONCE(x);	\
+			barrier();		\
+			__var;			\
+		})
+
+#include "ena_common_defs.h"
+#include "ena_admin_defs.h"
+#include "ena_eth_io_defs.h"
+#include "ena_regs_defs.h"
+
+#endif /* ENA_PLAT_H_ */
diff --git a/sys/contrib/ena-com/ena_regs_defs.h b/sys/contrib/ena-com/ena_regs_defs.h
new file mode 100644
index 0000000..1438fb8
--- /dev/null
+++ b/sys/contrib/ena-com/ena_regs_defs.h
@@ -0,0 +1,137 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * All rights reserved.
+ *
+ * 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.
+ * * Neither the name of copyright holder 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.
+ */
+
+#ifndef _ENA_REGS_H_
+#define _ENA_REGS_H_
+
+/* ena_registers offsets */
+#define ENA_REGS_VERSION_OFF		0x0
+#define ENA_REGS_CONTROLLER_VERSION_OFF		0x4
+#define ENA_REGS_CAPS_OFF		0x8
+#define ENA_REGS_CAPS_EXT_OFF		0xc
+#define ENA_REGS_AQ_BASE_LO_OFF		0x10
+#define ENA_REGS_AQ_BASE_HI_OFF		0x14
+#define ENA_REGS_AQ_CAPS_OFF		0x18
+#define ENA_REGS_ACQ_BASE_LO_OFF		0x20
+#define ENA_REGS_ACQ_BASE_HI_OFF		0x24
+#define ENA_REGS_ACQ_CAPS_OFF		0x28
+#define ENA_REGS_AQ_DB_OFF		0x2c
+#define ENA_REGS_ACQ_TAIL_OFF		0x30
+#define ENA_REGS_AENQ_CAPS_OFF		0x34
+#define ENA_REGS_AENQ_BASE_LO_OFF		0x38
+#define ENA_REGS_AENQ_BASE_HI_OFF		0x3c
+#define ENA_REGS_AENQ_HEAD_DB_OFF		0x40
+#define ENA_REGS_AENQ_TAIL_OFF		0x44
+#define ENA_REGS_INTR_MASK_OFF		0x4c
+#define ENA_REGS_DEV_CTL_OFF		0x54
+#define ENA_REGS_DEV_STS_OFF		0x58
+#define ENA_REGS_MMIO_REG_READ_OFF		0x5c
+#define ENA_REGS_MMIO_RESP_LO_OFF		0x60
+#define ENA_REGS_MMIO_RESP_HI_OFF		0x64
+#define ENA_REGS_RSS_IND_ENTRY_UPDATE_OFF		0x68
+
+/* version register */
+#define ENA_REGS_VERSION_MINOR_VERSION_MASK		0xff
+#define ENA_REGS_VERSION_MAJOR_VERSION_SHIFT		8
+#define ENA_REGS_VERSION_MAJOR_VERSION_MASK		0xff00
+
+/* controller_version register */
+#define ENA_REGS_CONTROLLER_VERSION_SUBMINOR_VERSION_MASK		0xff
+#define ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_SHIFT		8
+#define ENA_REGS_CONTROLLER_VERSION_MINOR_VERSION_MASK		0xff00
+#define ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_SHIFT		16
+#define ENA_REGS_CONTROLLER_VERSION_MAJOR_VERSION_MASK		0xff0000
+#define ENA_REGS_CONTROLLER_VERSION_IMPL_ID_SHIFT		24
+#define ENA_REGS_CONTROLLER_VERSION_IMPL_ID_MASK		0xff000000
+
+/* caps register */
+#define ENA_REGS_CAPS_CONTIGUOUS_QUEUE_REQUIRED_MASK		0x1
+#define ENA_REGS_CAPS_RESET_TIMEOUT_SHIFT		1
+#define ENA_REGS_CAPS_RESET_TIMEOUT_MASK		0x3e
+#define ENA_REGS_CAPS_DMA_ADDR_WIDTH_SHIFT		8
+#define ENA_REGS_CAPS_DMA_ADDR_WIDTH_MASK		0xff00
+#define ENA_REGS_CAPS_ADMIN_CMD_TO_SHIFT		16
+#define ENA_REGS_CAPS_ADMIN_CMD_TO_MASK		0xf0000
+
+/* aq_caps register */
+#define ENA_REGS_AQ_CAPS_AQ_DEPTH_MASK		0xffff
+#define ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_SHIFT		16
+#define ENA_REGS_AQ_CAPS_AQ_ENTRY_SIZE_MASK		0xffff0000
+
+/* acq_caps register */
+#define ENA_REGS_ACQ_CAPS_ACQ_DEPTH_MASK		0xffff
+#define ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_SHIFT		16
+#define ENA_REGS_ACQ_CAPS_ACQ_ENTRY_SIZE_MASK		0xffff0000
+
+/* aenq_caps register */
+#define ENA_REGS_AENQ_CAPS_AENQ_DEPTH_MASK		0xffff
+#define ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_SHIFT		16
+#define ENA_REGS_AENQ_CAPS_AENQ_ENTRY_SIZE_MASK		0xffff0000
+
+/* dev_ctl register */
+#define ENA_REGS_DEV_CTL_DEV_RESET_MASK		0x1
+#define ENA_REGS_DEV_CTL_AQ_RESTART_SHIFT		1
+#define ENA_REGS_DEV_CTL_AQ_RESTART_MASK		0x2
+#define ENA_REGS_DEV_CTL_QUIESCENT_SHIFT		2
+#define ENA_REGS_DEV_CTL_QUIESCENT_MASK		0x4
+#define ENA_REGS_DEV_CTL_IO_RESUME_SHIFT		3
+#define ENA_REGS_DEV_CTL_IO_RESUME_MASK		0x8
+
+/* dev_sts register */
+#define ENA_REGS_DEV_STS_READY_MASK		0x1
+#define ENA_REGS_DEV_STS_AQ_RESTART_IN_PROGRESS_SHIFT		1
+#define ENA_REGS_DEV_STS_AQ_RESTART_IN_PROGRESS_MASK		0x2
+#define ENA_REGS_DEV_STS_AQ_RESTART_FINISHED_SHIFT		2
+#define ENA_REGS_DEV_STS_AQ_RESTART_FINISHED_MASK		0x4
+#define ENA_REGS_DEV_STS_RESET_IN_PROGRESS_SHIFT		3
+#define ENA_REGS_DEV_STS_RESET_IN_PROGRESS_MASK		0x8
+#define ENA_REGS_DEV_STS_RESET_FINISHED_SHIFT		4
+#define ENA_REGS_DEV_STS_RESET_FINISHED_MASK		0x10
+#define ENA_REGS_DEV_STS_FATAL_ERROR_SHIFT		5
+#define ENA_REGS_DEV_STS_FATAL_ERROR_MASK		0x20
+#define ENA_REGS_DEV_STS_QUIESCENT_STATE_IN_PROGRESS_SHIFT		6
+#define ENA_REGS_DEV_STS_QUIESCENT_STATE_IN_PROGRESS_MASK		0x40
+#define ENA_REGS_DEV_STS_QUIESCENT_STATE_ACHIEVED_SHIFT		7
+#define ENA_REGS_DEV_STS_QUIESCENT_STATE_ACHIEVED_MASK		0x80
+
+/* mmio_reg_read register */
+#define ENA_REGS_MMIO_REG_READ_REQ_ID_MASK		0xffff
+#define ENA_REGS_MMIO_REG_READ_REG_OFF_SHIFT		16
+#define ENA_REGS_MMIO_REG_READ_REG_OFF_MASK		0xffff0000
+
+/* rss_ind_entry_update register */
+#define ENA_REGS_RSS_IND_ENTRY_UPDATE_INDEX_MASK		0xffff
+#define ENA_REGS_RSS_IND_ENTRY_UPDATE_CQ_IDX_SHIFT		16
+#define ENA_REGS_RSS_IND_ENTRY_UPDATE_CQ_IDX_MASK		0xffff0000
+
+#endif /*_ENA_REGS_H_ */
diff --git a/sys/dev/ena/ena.c b/sys/dev/ena/ena.c
new file mode 100644
index 0000000..a726e3c
--- /dev/null
+++ b/sys/dev/ena/ena.c
@@ -0,0 +1,3848 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * 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.
+ *
+ * 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.
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/endian.h>
+#include <sys/kernel.h>
+#include <sys/kthread.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+#include <sys/smp.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/sysctl.h>
+#include <sys/taskqueue.h>
+#include <sys/time.h>
+#include <sys/eventhandler.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+#include <machine/in_cksum.h>
+
+#include <net/bpf.h>
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_arp.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+#include <net/rss_config.h>
+#include <net/if_types.h>
+#include <net/if_vlan_var.h>
+
+#include <netinet/in_rss.h>
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <netinet/if_ether.h>
+#include <netinet/ip.h>
+#include <netinet/ip6.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
+
+#include "ena.h"
+#include "ena_sysctl.h"
+
+/*********************************************************
+ *  Function prototypes
+ *********************************************************/
+static int	ena_probe(device_t);
+static void	ena_intr_msix_mgmnt(void *);
+static int	ena_allocate_pci_resources(struct ena_adapter*);
+static void	ena_free_pci_resources(struct ena_adapter *);
+static int	ena_change_mtu(if_t, int);
+static inline void ena_alloc_counters(counter_u64_t *, int);
+static inline void ena_free_counters(counter_u64_t *, int);
+static inline void ena_reset_counters(counter_u64_t *, int);
+static void	ena_init_io_rings_common(struct ena_adapter *,
+    struct ena_ring *, uint16_t);
+static int	ena_init_io_rings(struct ena_adapter *);
+static void	ena_free_io_ring_resources(struct ena_adapter *, unsigned int);
+static void	ena_free_all_io_rings_resources(struct ena_adapter *);
+static int	ena_setup_tx_dma_tag(struct ena_adapter *);
+static int	ena_free_tx_dma_tag(struct ena_adapter *);
+static int	ena_setup_rx_dma_tag(struct ena_adapter *);
+static int	ena_free_rx_dma_tag(struct ena_adapter *);
+static int	ena_setup_tx_resources(struct ena_adapter *, int);
+static void	ena_free_tx_resources(struct ena_adapter *, int);
+static int	ena_setup_all_tx_resources(struct ena_adapter *);
+static void	ena_free_all_tx_resources(struct ena_adapter *);
+static int	ena_setup_rx_resources(struct ena_adapter *, unsigned int);
+static void	ena_free_rx_resources(struct ena_adapter *, unsigned int);
+static int	ena_setup_all_rx_resources(struct ena_adapter *);
+static void	ena_free_all_rx_resources(struct ena_adapter *);
+static inline int ena_alloc_rx_mbuf(struct ena_adapter *, struct ena_ring *,
+    struct ena_rx_buffer *);
+static void	ena_free_rx_mbuf(struct ena_adapter *, struct ena_ring *,
+    struct ena_rx_buffer *);
+static int	ena_refill_rx_bufs(struct ena_ring *, uint32_t);
+static void	ena_free_rx_bufs(struct ena_adapter *, unsigned int);
+static void	ena_refill_all_rx_bufs(struct ena_adapter *);
+static void	ena_free_all_rx_bufs(struct ena_adapter *);
+static void	ena_free_tx_bufs(struct ena_adapter *, unsigned int);
+static void	ena_free_all_tx_bufs(struct ena_adapter *);
+static void	ena_destroy_all_tx_queues(struct ena_adapter *);
+static void	ena_destroy_all_rx_queues(struct ena_adapter *);
+static void	ena_destroy_all_io_queues(struct ena_adapter *);
+static int	ena_create_io_queues(struct ena_adapter *);
+static int	ena_tx_cleanup(struct ena_ring *);
+static int	ena_rx_cleanup(struct ena_ring *);
+static int	validate_tx_req_id(struct ena_ring *, uint16_t);
+static void	ena_rx_hash_mbuf(struct ena_ring *, struct ena_com_rx_ctx *,
+    struct mbuf *);
+static struct mbuf* ena_rx_mbuf(struct ena_ring *, struct ena_com_rx_buf_info *,
+    struct ena_com_rx_ctx *, uint16_t *);
+static inline void ena_rx_checksum(struct ena_ring *, struct ena_com_rx_ctx *,
+    struct mbuf *);
+static void	ena_handle_msix(void *);
+static int	ena_enable_msix(struct ena_adapter *);
+static void	ena_setup_mgmnt_intr(struct ena_adapter *);
+static void	ena_setup_io_intr(struct ena_adapter *);
+static int	ena_request_mgmnt_irq(struct ena_adapter *);
+static int	ena_request_io_irq(struct ena_adapter *);
+static void	ena_free_mgmnt_irq(struct ena_adapter *);
+static void	ena_free_io_irq(struct ena_adapter *);
+static void	ena_free_irqs(struct ena_adapter*);
+static void	ena_disable_msix(struct ena_adapter *);
+static void	ena_unmask_all_io_irqs(struct ena_adapter *);
+static int	ena_rss_configure(struct ena_adapter *);
+static void	ena_update_hw_stats(void *, int);
+static int	ena_up_complete(struct ena_adapter *);
+static int	ena_up(struct ena_adapter *);
+static void	ena_down(struct ena_adapter *);
+static uint64_t	ena_get_counter(if_t, ift_counter);
+static int	ena_media_change(if_t);
+static void	ena_media_status(if_t, struct ifmediareq *);
+static void	ena_init(void *);
+static int	ena_ioctl(if_t, u_long, caddr_t);
+static int	ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *);
+static void	ena_update_host_info(struct ena_admin_host_info *, if_t);
+static void	ena_update_hwassist(struct ena_adapter *);
+static int	ena_setup_ifnet(device_t, struct ena_adapter *,
+    struct ena_com_dev_get_features_ctx *);
+static void	ena_tx_csum(struct ena_com_tx_ctx *, struct mbuf *);
+static int	ena_check_and_collapse_mbuf(struct ena_ring *tx_ring,
+    struct mbuf **mbuf);
+static int	ena_xmit_mbuf(struct ena_ring *, struct mbuf **);
+static void	ena_start_xmit(struct ena_ring *);
+static int	ena_mq_start(if_t, struct mbuf *);
+static void	ena_deferred_mq_start(void *, int);
+static void	ena_qflush(if_t);
+static int	ena_calc_io_queue_num(struct ena_adapter *,
+    struct ena_com_dev_get_features_ctx *);
+static int	ena_calc_queue_size(struct ena_adapter *, uint16_t *,
+    uint16_t *, struct ena_com_dev_get_features_ctx *);
+static int	ena_rss_init_default(struct ena_adapter *);
+static void	ena_rss_init_default_deferred(void *);
+static void	ena_config_host_info(struct ena_com_dev *);
+static int	ena_attach(device_t);
+static int	ena_detach(device_t);
+static int	ena_device_init(struct ena_adapter *, device_t,
+    struct ena_com_dev_get_features_ctx *, int *);
+static int	ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *,
+    int);
+static void ena_update_on_link_change(void *, struct ena_admin_aenq_entry *);
+static void	unimplemented_aenq_handler(void *,
+    struct ena_admin_aenq_entry *);
+static void	ena_timer_service(void *);
+
+static char ena_version[] = DEVICE_NAME DRV_MODULE_NAME " v" DRV_MODULE_VERSION;
+
+static SYSCTL_NODE(_hw, OID_AUTO, ena, CTLFLAG_RD, 0, "ENA driver parameters");
+
+/*
+ * Tuneable number of buffers in the buf-ring (drbr)
+ */
+static int ena_buf_ring_size = 4096;
+SYSCTL_INT(_hw_ena, OID_AUTO, buf_ring_size, CTLFLAG_RWTUN,
+    &ena_buf_ring_size, 0, "Size of the bufring");
+
+
+static ena_vendor_info_t ena_vendor_info_array[] = {
+    { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_PF, 0},
+    { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_PF, 0},
+    { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_VF, 0},
+    { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_VF, 0},
+    /* Last entry */
+    { 0, 0, 0 }
+};
+
+/*
+ * Contains pointers to event handlers, e.g. link state chage.
+ */
+static struct ena_aenq_handlers aenq_handlers;
+
+void
+ena_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nseg, int error)
+{
+	if (error)
+		return;
+	*(bus_addr_t *) arg = segs[0].ds_addr;
+	return;
+}
+
+int
+ena_dma_alloc(device_t dmadev, bus_size_t size,
+    ena_mem_handle_t *dma , int mapflags)
+{
+	struct ena_adapter* adapter = device_get_softc(dmadev);
+	uint32_t maxsize = ((size - 1)/PAGE_SIZE + 1) * PAGE_SIZE;
+	uint64_t dma_space_addr = ENA_DMA_BIT_MASK(adapter->dma_width);
+	int error;
+
+	if (dma_space_addr == 0)
+		dma_space_addr = BUS_SPACE_MAXADDR;
+	error = bus_dma_tag_create(bus_get_dma_tag(dmadev), /* parent */
+	    8, 0,	      /* alignment, bounds 		*/
+	    dma_space_addr,   /* lowaddr of exclusion window	*/
+	    BUS_SPACE_MAXADDR,/* highaddr of exclusion window	*/
+	    NULL, NULL,	      /* filter, filterarg 		*/
+	    maxsize,	      /* maxsize 			*/
+	    1,		      /* nsegments 			*/
+	    maxsize,	      /* maxsegsize 			*/
+	    BUS_DMA_ALLOCNOW, /* flags 				*/
+	    NULL,	      /* lockfunc 			*/
+	    NULL,	      /* lockarg 			*/
+	    &dma->tag);
+	if (error) {
+		device_printf(dmadev,
+		"%s: bus_dma_tag_create failed: %d\n",
+		__func__, error);
+		goto fail_tag;
+	}
+
+	error = bus_dmamem_alloc(dma->tag, (void**) &dma->vaddr,
+	    BUS_DMA_COHERENT | BUS_DMA_ZERO, &dma->map);
+	if (error) {
+		device_printf(dmadev,
+		"%s: bus_dmamem_alloc(%ju) failed: %d\n",
+		__func__, (uintmax_t)size, error);
+		goto fail_map_create;
+	}
+
+	dma->paddr = 0;
+	error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr,
+	    size, ena_dmamap_callback, &dma->paddr, mapflags);
+	if (error || dma->paddr == 0) {
+		device_printf(dmadev,
+		"%s: bus_dmamap_load failed: %d\n",
+		__func__, error);
+		goto fail_map_load;
+	}
+
+	return (0);
+
+fail_map_load:
+	bus_dmamap_unload(dma->tag, dma->map);
+fail_map_create:
+	bus_dmamem_free(dma->tag, dma->vaddr, dma->map);
+	bus_dma_tag_destroy(dma->tag);
+fail_tag:
+	dma->tag = NULL;
+
+	return (error);
+}
+
+static int
+ena_allocate_pci_resources(struct ena_adapter* adapter)
+{
+	device_t pdev = adapter->pdev;
+	int rid;
+
+	rid = PCIR_BAR(ENA_REG_BAR);
+	adapter->memory = NULL;
+	adapter->registers = bus_alloc_resource_any(pdev, SYS_RES_MEMORY,
+	    &rid, RF_ACTIVE);
+	if (adapter->registers == NULL) {
+		device_printf(pdev, "Unable to allocate bus resource: "
+		    "registers\n");
+		return (ENXIO);
+	}
+
+	return (0);
+}
+
+static void
+ena_free_pci_resources(struct ena_adapter *adapter)
+{
+	device_t pdev = adapter->pdev;
+
+	if (adapter->memory != NULL) {
+		bus_release_resource(pdev, SYS_RES_MEMORY,
+		    PCIR_BAR(ENA_MEM_BAR), adapter->memory);
+	}
+
+	if (adapter->registers != NULL) {
+		bus_release_resource(pdev, SYS_RES_MEMORY,
+		    PCIR_BAR(ENA_REG_BAR), adapter->registers);
+	}
+
+	return;
+}
+
+static int
+ena_probe(device_t dev)
+{
+	ena_vendor_info_t *ent;
+	char		adapter_name[60];
+	uint16_t	pci_vendor_id = 0;
+	uint16_t	pci_device_id = 0;
+
+	pci_vendor_id = pci_get_vendor(dev);
+	pci_device_id = pci_get_device(dev);
+
+	ent = ena_vendor_info_array;
+	while (ent->vendor_id != 0) {
+		if ((pci_vendor_id == ent->vendor_id) &&
+		    (pci_device_id == ent->device_id)) {
+			ena_trace(ENA_DBG, "vendor=%x device=%x ",
+			    pci_vendor_id, pci_device_id);
+
+			sprintf(adapter_name, DEVICE_DESC);
+			device_set_desc_copy(dev, adapter_name);
+			return (BUS_PROBE_DEFAULT);
+		}
+
+		ent++;
+
+	}
+
+	return (ENXIO);
+}
+
+static int
+ena_change_mtu(if_t ifp, int new_mtu)
+{
+	struct ena_adapter *adapter = if_getsoftc(ifp);
+	struct ena_com_dev_get_features_ctx get_feat_ctx;
+	int rc, old_mtu, max_frame;
+
+	rc = ena_com_get_dev_attr_feat(adapter->ena_dev, &get_feat_ctx);
+	if (rc) {
+		device_printf(adapter->pdev,
+		    "Cannot get attribute for ena device\n");
+		return (ENXIO);
+	}
+
+	/* Save old MTU in case of fail */
+	old_mtu = if_getmtu(ifp);
+
+	/* Change MTU and calculate max frame */
+	if_setmtu(ifp, new_mtu);
+	max_frame = ETHER_MAX_FRAME(ifp, ETHERTYPE_VLAN, 1);
+
+	if ((new_mtu < ENA_MIN_FRAME_LEN) ||
+	    (new_mtu > get_feat_ctx.dev_attr.max_mtu) ||
+	    (max_frame > ENA_MAX_FRAME_LEN)) {
+		device_printf(adapter->pdev, "Invalid MTU setting. "
+		    "new_mtu: %d\n", new_mtu);
+		goto error;
+	}
+
+	rc = ena_com_set_dev_mtu(adapter->ena_dev, new_mtu);
+	if (rc != 0)
+		goto error;
+
+	return (0);
+error:
+	if_setmtu(ifp, old_mtu);
+	return (EINVAL);
+}
+
+static inline void
+ena_alloc_counters(counter_u64_t *begin, int size)
+{
+	counter_u64_t *end = (counter_u64_t *)((char *)begin + size);
+
+	for (; begin < end; ++begin)
+		*begin = counter_u64_alloc(M_WAITOK);
+}
+
+static inline void
+ena_free_counters(counter_u64_t *begin, int size)
+{
+	counter_u64_t *end = (counter_u64_t *)((char *)begin + size);
+
+	for (; begin < end; ++begin)
+		counter_u64_free(*begin);
+}
+
+static inline void
+ena_reset_counters(counter_u64_t *begin, int size)
+{
+	counter_u64_t *end = (counter_u64_t *)((char *)begin + size);
+
+	for (; begin < end; ++begin)
+		counter_u64_zero(*begin);
+}
+
+static void
+ena_init_io_rings_common(struct ena_adapter *adapter, struct ena_ring *ring,
+    uint16_t qid)
+{
+
+	ring->qid = qid;
+	ring->adapter = adapter;
+	ring->ena_dev = adapter->ena_dev;
+}
+
+static int
+ena_init_io_rings(struct ena_adapter *adapter)
+{
+	struct ena_com_dev *ena_dev;
+	struct ena_ring *txr, *rxr;
+	struct ena_que *que;
+	int i;
+	int rc;
+
+	ena_dev = adapter->ena_dev;
+
+	for (i = 0; i < adapter->num_queues; i++) {
+		txr = &adapter->tx_ring[i];
+		rxr = &adapter->rx_ring[i];
+
+		/* TX/RX common ring state */
+		ena_init_io_rings_common(adapter, txr, i);
+		ena_init_io_rings_common(adapter, rxr, i);
+
+		/* TX specific ring state */
+		txr->ring_size = adapter->tx_ring_size;
+		txr->tx_max_header_size = ena_dev->tx_max_header_size;
+		txr->tx_mem_queue_type = ena_dev->tx_mem_queue_type;
+		txr->smoothed_interval =
+		    ena_com_get_nonadaptive_moderation_interval_tx(ena_dev);
+
+		/* Allocate a buf ring */
+		txr->br = buf_ring_alloc(ena_buf_ring_size, M_DEVBUF,
+		    M_WAITOK, &txr->ring_mtx);
+		if (txr->br == NULL) {
+			device_printf(adapter->pdev,
+			    "Error while setting up bufring\n");
+			rc = ENOMEM;
+			goto err_bufr_free;
+		}
+
+		/* Alloc TX statistics. */
+		ena_alloc_counters((counter_u64_t *)&txr->tx_stats,
+		    sizeof(txr->tx_stats));
+
+		/* RX specific ring state */
+		rxr->ring_size = adapter->rx_ring_size;
+		rxr->rx_small_copy_len = adapter->small_copy_len;
+		rxr->smoothed_interval =
+		    ena_com_get_nonadaptive_moderation_interval_rx(ena_dev);
+
+		/* Alloc RX statistics. */
+		ena_alloc_counters((counter_u64_t *)&rxr->rx_stats,
+		    sizeof(rxr->rx_stats));
+
+		/* Initialize locks */
+		snprintf(txr->mtx_name, nitems(txr->mtx_name), "%s:tx(%d)",
+		    device_get_nameunit(adapter->pdev), i);
+		snprintf(rxr->mtx_name, nitems(rxr->mtx_name), "%s:rx(%d)",
+		    device_get_nameunit(adapter->pdev), i);
+
+		mtx_init(&txr->ring_mtx, txr->mtx_name, NULL, MTX_DEF);
+
+		que = &adapter->que[i];
+		que->adapter = adapter;
+		que->id = i;
+		que->tx_ring = txr;
+		que->rx_ring = rxr;
+
+		txr->que = que;
+		rxr->que = que;
+	}
+
+	return 0;
+
+err_bufr_free:
+	while (i--)
+		ena_free_io_ring_resources(adapter, i);
+
+	return (rc);
+}
+
+static void
+ena_free_io_ring_resources(struct ena_adapter *adapter, unsigned int qid)
+{
+	struct ena_ring *txr = &adapter->tx_ring[qid];
+	struct ena_ring *rxr = &adapter->rx_ring[qid];
+
+	ena_free_counters((counter_u64_t *)&txr->tx_stats,
+	    sizeof(txr->tx_stats));
+	ena_free_counters((counter_u64_t *)&rxr->rx_stats,
+	    sizeof(rxr->rx_stats));
+
+	mtx_destroy(&txr->ring_mtx);
+
+	drbr_free(txr->br, M_DEVBUF);
+
+}
+
+static void
+ena_free_all_io_rings_resources(struct ena_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_queues; i++)
+		ena_free_io_ring_resources(adapter, i);
+
+}
+
+static int
+ena_setup_tx_dma_tag(struct ena_adapter *adapter)
+{
+	int ret;
+
+	/* Create DMA tag for Tx buffers */
+	ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev),
+	    1, 0,				  /* alignment, bounds 	     */
+	    ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr of excl window  */
+	    BUS_SPACE_MAXADDR, 			  /* highaddr of excl window */
+	    NULL, NULL,				  /* filter, filterarg 	     */
+	    ENA_TSO_MAXSIZE,			  /* maxsize 		     */
+	    adapter->max_tx_sgl_size - 1,	  /* nsegments 		     */
+	    ENA_TSO_MAXSIZE,			  /* maxsegsize 	     */
+	    0,					  /* flags 		     */
+	    NULL,				  /* lockfunc 		     */
+	    NULL,				  /* lockfuncarg 	     */
+	    &adapter->tx_buf_tag);
+
+	if (ret != 0)
+		device_printf(adapter->pdev, "Unable to create Tx DMA tag\n");
+
+	return (ret);
+}
+
+static int
+ena_free_tx_dma_tag(struct ena_adapter *adapter)
+{
+	int ret;
+
+	ret = bus_dma_tag_destroy(adapter->tx_buf_tag);
+
+	if (ret == 0)
+		adapter->tx_buf_tag = NULL;
+
+	return (ret);
+}
+
+static int
+ena_setup_rx_dma_tag(struct ena_adapter *adapter)
+{
+	int ret;
+
+	/* Create DMA tag for Rx buffers*/
+	ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev), /* parent   */
+	    1, 0,				  /* alignment, bounds 	     */
+	    ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr of excl window  */
+	    BUS_SPACE_MAXADDR, 			  /* highaddr of excl window */
+	    NULL, NULL,				  /* filter, filterarg 	     */
+	    MJUM16BYTES,			  /* maxsize 		     */
+	    1,					  /* nsegments 		     */
+	    MJUM16BYTES,			  /* maxsegsize 	     */
+	    0,					  /* flags 		     */
+	    NULL,				  /* lockfunc 		     */
+	    NULL,				  /* lockarg 		     */
+	    &adapter->rx_buf_tag);
+
+	if (ret != 0)
+		device_printf(adapter->pdev, "Unable to create Rx DMA tag\n");
+
+	return (ret);
+}
+
+static int
+ena_free_rx_dma_tag(struct ena_adapter *adapter)
+{
+	int ret;
+
+	ret = bus_dma_tag_destroy(adapter->rx_buf_tag);
+
+	if (ret == 0)
+		adapter->rx_buf_tag = NULL;
+
+	return (ret);
+}
+
+
+/**
+ * ena_setup_tx_resources - allocate Tx resources (Descriptors)
+ * @adapter: network interface device structure
+ * @qid: queue index
+ *
+ * Returns 0 on success, otherwise on failure.
+ **/
+static int
+ena_setup_tx_resources(struct ena_adapter *adapter, int qid)
+{
+	struct ena_que *que = &adapter->que[qid];
+	struct ena_ring *tx_ring = que->tx_ring;
+	int size, i, err;
+#ifdef	RSS
+	cpuset_t cpu_mask;
+#endif
+
+	size = sizeof(struct ena_tx_buffer) * tx_ring->ring_size;
+
+	tx_ring->tx_buffer_info = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
+	if (!tx_ring->tx_buffer_info)
+		goto err_tx_buffer_info;
+
+	size = sizeof(uint16_t) * tx_ring->ring_size;
+	tx_ring->free_tx_ids = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
+	if (!tx_ring->free_tx_ids)
+		goto err_tx_reqs;
+
+	/* Req id stack for TX OOO completions */
+	for (i = 0; i < tx_ring->ring_size; i++)
+		tx_ring->free_tx_ids[i] = i;
+
+	/* Reset TX statistics. */
+	ena_reset_counters((counter_u64_t *)&tx_ring->tx_stats,
+	    sizeof(tx_ring->tx_stats));
+
+	tx_ring->next_to_use = 0;
+	tx_ring->next_to_clean = 0;
+
+	/* Make sure that drbr is empty */
+	ENA_RING_MTX_LOCK(tx_ring);
+	drbr_flush(adapter->ifp, tx_ring->br);
+	ENA_RING_MTX_UNLOCK(tx_ring);
+
+	/* ... and create the buffer DMA maps */
+	for (i = 0; i < tx_ring->ring_size; i++) {
+		err = bus_dmamap_create(adapter->tx_buf_tag, 0,
+		    &tx_ring->tx_buffer_info[i].map);
+		if (err != 0) {
+			device_printf(adapter->pdev,
+			    "Unable to create Tx DMA map for buffer %d\n", i);
+			goto err_tx_map;
+		}
+	}
+
+	/* Allocate taskqueues */
+	TASK_INIT(&tx_ring->enqueue_task, 0, ena_deferred_mq_start, tx_ring);
+	tx_ring->enqueue_tq = taskqueue_create_fast("ena_tx_enque", M_NOWAIT,
+	    taskqueue_thread_enqueue, &tx_ring->enqueue_tq);
+	if (tx_ring->enqueue_tq == NULL) {
+		device_printf(adapter->pdev,
+		    "Unable to create taskqueue for enqueue task\n");
+		i = tx_ring->ring_size;
+		goto err_tx_map;
+	}
+
+	/* RSS set cpu for thread */
+#ifdef RSS
+	CPU_SETOF(que->cpu, &cpu_mask);
+	taskqueue_start_threads_cpuset(&tx_ring->enqueue_tq, 1, PI_NET,
+	    &cpu_mask, "%s tx_ring enq (bucket %d)",
+	    device_get_nameunit(adapter->pdev), que->cpu);
+#else /* RSS */
+	taskqueue_start_threads(&tx_ring->enqueue_tq, 1, PI_NET,
+	    "%s txeq %d", device_get_nameunit(adapter->pdev), que->cpu);
+#endif /* RSS */
+
+	return (0);
+
+err_tx_map:
+	while (i--) {
+		bus_dmamap_destroy(adapter->tx_buf_tag,
+		    tx_ring->tx_buffer_info[i].map);
+	}
+	ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->free_tx_ids);
+err_tx_reqs:
+	ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->tx_buffer_info);
+err_tx_buffer_info:
+	return (ENOMEM);
+}
+
+/**
+ * ena_free_tx_resources - Free Tx Resources per Queue
+ * @adapter: network interface device structure
+ * @qid: queue index
+ *
+ * Free all transmit software resources
+ **/
+static void
+ena_free_tx_resources(struct ena_adapter *adapter, int qid)
+{
+	struct ena_ring *tx_ring = &adapter->tx_ring[qid];
+
+	while (taskqueue_cancel(tx_ring->enqueue_tq, &tx_ring->enqueue_task,
+	    NULL))
+		taskqueue_drain(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
+
+	taskqueue_free(tx_ring->enqueue_tq);
+
+	ENA_RING_MTX_LOCK(tx_ring);
+	/* Flush buffer ring, */
+	drbr_flush(adapter->ifp, tx_ring->br);
+
+	/* Free buffer DMA maps, */
+	for (int i = 0; i < tx_ring->ring_size; i++) {
+		m_freem(tx_ring->tx_buffer_info[i].mbuf);
+		tx_ring->tx_buffer_info[i].mbuf = NULL;
+		bus_dmamap_unload(adapter->tx_buf_tag,
+		    tx_ring->tx_buffer_info[i].map);
+		bus_dmamap_destroy(adapter->tx_buf_tag,
+		    tx_ring->tx_buffer_info[i].map);
+	}
+	ENA_RING_MTX_UNLOCK(tx_ring);
+
+	/* And free allocated memory. */
+	ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->tx_buffer_info);
+	tx_ring->tx_buffer_info = NULL;
+
+	ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->free_tx_ids);
+	tx_ring->free_tx_ids = NULL;
+}
+
+/**
+ * ena_setup_all_tx_resources - allocate all queues Tx resources
+ * @adapter: network interface device structure
+ *
+ * Returns 0 on success, otherwise on failure.
+ **/
+static int
+ena_setup_all_tx_resources(struct ena_adapter *adapter)
+{
+	int i, rc;
+
+	for (i = 0; i < adapter->num_queues; i++) {
+		rc = ena_setup_tx_resources(adapter, i);
+		if (!rc)
+			continue;
+
+		device_printf(adapter->pdev,
+		    "Allocation for Tx Queue %u failed\n", i);
+		goto err_setup_tx;
+	}
+
+	return (0);
+
+err_setup_tx:
+	/* Rewind the index freeing the rings as we go */
+	while (i--)
+		ena_free_tx_resources(adapter, i);
+	return (rc);
+}
+
+/**
+ * ena_free_all_tx_resources - Free Tx Resources for All Queues
+ * @adapter: network interface device structure
+ *
+ * Free all transmit software resources
+ **/
+static void
+ena_free_all_tx_resources(struct ena_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_queues; i++)
+		ena_free_tx_resources(adapter, i);
+
+	return;
+}
+
+/**
+ * ena_setup_rx_resources - allocate Rx resources (Descriptors)
+ * @adapter: network interface device structure
+ * @qid: queue index
+ *
+ * Returns 0 on success, otherwise on failure.
+ **/
+static int
+ena_setup_rx_resources(struct ena_adapter *adapter, unsigned int qid)
+{
+	struct ena_que *que = &adapter->que[qid];
+	struct ena_ring *rx_ring = que->rx_ring;
+	int size, err, i;
+#ifdef	RSS
+	cpuset_t cpu_mask;
+#endif
+
+	size = sizeof(struct ena_rx_buffer) * rx_ring->ring_size;
+
+	/*
+	 * Alloc extra element so in rx path
+	 * we can always prefetch rx_info + 1
+	 */
+	size += sizeof(struct ena_rx_buffer);
+
+	rx_ring->rx_buffer_info = ENA_MEM_ALLOC(adapter->ena_dev->dmadev, size);
+	if (!rx_ring->rx_buffer_info)
+		return (ENOMEM);
+
+	/* Reset RX statistics. */
+	ena_reset_counters((counter_u64_t *)&rx_ring->rx_stats,
+	    sizeof(rx_ring->rx_stats));
+
+	rx_ring->next_to_clean = 0;
+	rx_ring->next_to_use = 0;
+
+	/* ... and create the buffer DMA maps */
+	for (i = 0; i < rx_ring->ring_size; i++) {
+		err = bus_dmamap_create(adapter->rx_buf_tag, 0,
+		    &(rx_ring->rx_buffer_info[i].map));
+		if (err != 0) {
+			device_printf(adapter->pdev,
+			    "Unable to create Rx DMA map for buffer %d\n", i);
+			goto err_rx_dma;
+		}
+	}
+
+	/* Create LRO for the ring */
+	if (adapter->ifp->if_capenable & IFCAP_LRO) {
+		int err = tcp_lro_init(&rx_ring->lro);
+		if (err) {
+			device_printf(adapter->pdev,
+			    "LRO[%d] Initialization failed!\n", qid);
+		} else {
+			ena_trace(ENA_INFO,
+			    "RX Soft LRO[%d] Initialized\n", qid);
+			rx_ring->lro.ifp = adapter->ifp;
+		}
+	}
+
+	return (0);
+
+err_rx_dma:
+	while (i--) {
+		bus_dmamap_destroy(adapter->rx_buf_tag,
+		    rx_ring->rx_buffer_info[i].map);
+	}
+
+	ENA_MEM_FREE(adapter->ena_dev->dmadev, rx_ring->rx_buffer_info);
+	rx_ring->rx_buffer_info = NULL;
+	ena_trace(ENA_ALERT, "RX resource allocation fail");
+	return (ENOMEM);
+}
+
+/**
+ * ena_free_rx_resources - Free Rx Resources
+ * @adapter: network interface device structure
+ * @qid: queue index
+ *
+ * Free all receive software resources
+ **/
+static void
+ena_free_rx_resources(struct ena_adapter *adapter, unsigned int qid)
+{
+	struct ena_ring *rx_ring = &adapter->rx_ring[qid];
+
+	ena_trace(ENA_INFO, "%s qid %d\n", __func__, qid);
+
+	/* Free buffer DMA maps, */
+	for (int i = 0; i < rx_ring->ring_size; i++) {
+		m_freem(rx_ring->rx_buffer_info[i].mbuf);
+		rx_ring->rx_buffer_info[i].mbuf = NULL;
+		bus_dmamap_unload(adapter->rx_buf_tag,
+		    rx_ring->rx_buffer_info[i].map);
+		bus_dmamap_destroy(adapter->rx_buf_tag,
+		    rx_ring->rx_buffer_info[i].map);
+	}
+
+	/* free LRO resources, */
+	tcp_lro_free(&rx_ring->lro);
+
+	/* free allocated memory */
+	ENA_MEM_FREE(adapter->ena_dev->dmadev, rx_ring->rx_buffer_info);
+	rx_ring->rx_buffer_info = NULL;
+
+	return;
+}
+
+/**
+ * ena_setup_all_rx_resources - allocate all queues Rx resources
+ * @adapter: network interface device structure
+ *
+ * Returns 0 on success, otherwise on failure.
+ **/
+static int
+ena_setup_all_rx_resources(struct ena_adapter *adapter)
+{
+	int i, rc = 0;
+
+	for (i = 0; i < adapter->num_queues; i++) {
+		rc = ena_setup_rx_resources(adapter, i);
+		if (!rc)
+			continue;
+
+		device_printf(adapter->pdev,
+		    "Allocation for Rx Queue %u failed\n", i);
+		goto err_setup_rx;
+	}
+	return (0);
+
+err_setup_rx:
+	/* rewind the index freeing the rings as we go */
+	while (i--)
+		ena_free_rx_resources(adapter, i);
+	return (rc);
+}
+
+/**
+ * ena_free_all_rx_resources - Free Rx resources for all queues
+ * @adapter: network interface device structure
+ *
+ * Free all receive software resources
+ **/
+static void
+ena_free_all_rx_resources(struct ena_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_queues; i++)
+		ena_free_rx_resources(adapter, i);
+
+	return;
+}
+
+static inline int
+ena_alloc_rx_mbuf(struct ena_adapter *adapter,
+    struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info)
+{
+	struct ena_com_buf *ena_buf;
+	bus_dma_segment_t segs[1];
+	int nsegs, error;
+
+	/* if previous allocated frag is not used */
+	if (rx_info->mbuf != NULL)
+		return (0);
+
+	/* Get mbuf using UMA allocator */
+	rx_info->mbuf = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUM16BYTES);
+
+	if (!rx_info->mbuf) {
+		counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1);
+		return (ENOMEM);
+	}
+	/* Set mbuf length*/
+	rx_info->mbuf->m_pkthdr.len = rx_info->mbuf->m_len = MJUM16BYTES;
+
+	/* Map packets for DMA */
+	ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH,
+	    "Using tag %p for buffers' DMA mapping, mbuf %p len: %d",
+	    adapter->rx_buf_tag,rx_info->mbuf, rx_info->mbuf->m_len);
+	error = bus_dmamap_load_mbuf_sg(adapter->rx_buf_tag, rx_info->map,
+	    rx_info->mbuf, segs, &nsegs, BUS_DMA_NOWAIT);
+	if (error || (nsegs != 1)) {
+		device_printf(adapter->pdev, "failed to map mbuf, error: %d, "
+		    "nsegs: %d\n", error, nsegs);
+		counter_u64_add(rx_ring->rx_stats.dma_mapping_err, 1);
+		goto exit;
+
+	}
+
+	bus_dmamap_sync(adapter->rx_buf_tag, rx_info->map, BUS_DMASYNC_PREREAD);
+
+	ena_buf = &rx_info->ena_buf;
+	ena_buf->paddr = segs[0].ds_addr;
+	ena_buf->len = MJUM16BYTES;
+
+	ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH,
+	    "ALLOC RX BUF: mbuf %p, rx_info %p, len %d, paddr %#jx\n",
+	    rx_info->mbuf, rx_info,ena_buf->len, (uintmax_t)ena_buf->paddr);
+
+	return (0);
+
+exit:
+	m_freem(rx_info->mbuf);
+	rx_info->mbuf = NULL;
+	return (EFAULT);
+}
+
+static void
+ena_free_rx_mbuf(struct ena_adapter *adapter, struct ena_ring *rx_ring,
+    struct ena_rx_buffer *rx_info)
+{
+
+	if (!rx_info->mbuf)
+		return;
+
+	bus_dmamap_unload(adapter->rx_buf_tag, rx_info->map);
+	m_freem(rx_info->mbuf);
+	rx_info->mbuf = NULL;
+
+	return;
+}
+
+
+/**
+ * ena_refill_rx_bufs - Refills ring with descriptors
+ * @rx_ring: the ring which we want to feed with free descriptors
+ * @num: number of descriptors to refill
+ * Refills the ring with newly allocated DMA-mapped mbufs for receiving
+ **/
+static int
+ena_refill_rx_bufs(struct ena_ring *rx_ring, uint32_t num)
+{
+	struct ena_adapter *adapter = rx_ring->adapter;
+	uint16_t next_to_use;
+	uint32_t i;
+	int rc;
+
+	ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC, "refill qid: %d",
+	    rx_ring->qid);
+
+	next_to_use = rx_ring->next_to_use;
+
+	for (i = 0; i < num; i++) {
+		ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC,
+		    "RX buffer - next to use: %d", next_to_use);
+
+		struct ena_rx_buffer *rx_info =
+		    &rx_ring->rx_buffer_info[next_to_use];
+
+		rc = ena_alloc_rx_mbuf(adapter, rx_ring, rx_info);
+		if (rc < 0) {
+			device_printf(adapter->pdev,
+			    "failed to alloc buffer for rx queue\n");
+			break;
+		}
+		rc = ena_com_add_single_rx_desc(rx_ring->ena_com_io_sq,
+		    &rx_info->ena_buf, next_to_use);
+		if (unlikely(rc)) {
+			device_printf(adapter->pdev,
+			    "failed to add buffer for rx queue %d\n",
+			    rx_ring->qid);
+			break;
+		}
+		next_to_use = ENA_RX_RING_IDX_NEXT(next_to_use,
+		    rx_ring->ring_size);
+	}
+
+	if (i < num) {
+		counter_u64_add(rx_ring->rx_stats.refil_partial, 1);
+		device_printf(adapter->pdev,
+		    "refilled rx queue %d with %d pages only\n",
+		    rx_ring->qid, i);
+	}
+
+	if (i != 0) {
+		wmb();
+		ena_com_write_sq_doorbell(rx_ring->ena_com_io_sq);
+	}
+	rx_ring->next_to_use = next_to_use;
+	return (i);
+}
+
+static void
+ena_free_rx_bufs(struct ena_adapter *adapter, unsigned int qid)
+{
+	struct ena_ring *rx_ring = &adapter->rx_ring[qid];
+	unsigned int i;
+
+	for (i = 0; i < rx_ring->ring_size; i++) {
+		struct ena_rx_buffer *rx_info = &rx_ring->rx_buffer_info[i];
+
+		if (rx_info->mbuf)
+			ena_free_rx_mbuf(adapter, rx_ring, rx_info);
+	}
+
+	return;
+}
+
+/**
+ * ena_refill_all_rx_bufs - allocate all queues Rx buffers
+ * @adapter: network interface device structure
+ *
+ */
+static void
+ena_refill_all_rx_bufs(struct ena_adapter *adapter)
+{
+	struct ena_ring *rx_ring;
+	int i, rc, bufs_num;
+
+	for (i = 0; i < adapter->num_queues; i++) {
+		rx_ring = &adapter->rx_ring[i];
+		bufs_num = rx_ring->ring_size - 1;
+		rc = ena_refill_rx_bufs(rx_ring, bufs_num);
+
+		if (unlikely(rc != bufs_num))
+			device_printf(adapter->pdev,
+			    "refilling Queue %d failed. allocated %d buffers"
+			    " from: %d\n", i, rc, bufs_num);
+	}
+}
+
+static void
+ena_free_all_rx_bufs(struct ena_adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < adapter->num_queues; i++)
+		ena_free_rx_bufs(adapter, i);
+	return;
+}
+
+/**
+ * ena_free_tx_bufs - Free Tx Buffers per Queue
+ * @adapter: network interface device structure
+ * @qid: queue index
+ **/
+static void
+ena_free_tx_bufs(struct ena_adapter *adapter, unsigned int qid)
+{
+	struct ena_ring *tx_ring = &adapter->tx_ring[qid];
+
+	ENA_RING_MTX_LOCK(tx_ring);
+	for (int i = 0; i < tx_ring->ring_size; i++) {
+		struct ena_tx_buffer *tx_info = &tx_ring->tx_buffer_info[i];
+
+		if (tx_info->mbuf == NULL)
+			continue;
+
+		ena_trace(ENA_DBG | ENA_TXPTH | ENA_RSC,
+		    "free uncompleted Tx mbufs qid[%d] idx: 0x%x", qid, i);
+
+		bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map);
+		m_free(tx_info->mbuf);
+		tx_info->mbuf = NULL;
+	}
+	ENA_RING_MTX_UNLOCK(tx_ring);
+
+	return;
+}
+
+static void
+ena_free_all_tx_bufs(struct ena_adapter *adapter)
+{
+
+	for (int i = 0; i < adapter->num_queues; i++)
+		ena_free_tx_bufs(adapter, i);
+
+	return;
+}
+
+static void
+ena_destroy_all_tx_queues(struct ena_adapter *adapter)
+{
+	uint16_t ena_qid;
+	int i;
+
+	for (i = 0; i < adapter->num_queues; i++) {
+		ena_qid = ENA_IO_TXQ_IDX(i);
+		ena_com_destroy_io_queue(adapter->ena_dev, ena_qid);
+	}
+}
+
+static void
+ena_destroy_all_rx_queues(struct ena_adapter *adapter)
+{
+	uint16_t ena_qid;
+	int i;
+
+	for (i = 0; i < adapter->num_queues; i++) {
+		ena_qid = ENA_IO_RXQ_IDX(i);
+		ena_com_destroy_io_queue(adapter->ena_dev, ena_qid);
+	}
+}
+
+static void
+ena_destroy_all_io_queues(struct ena_adapter *adapter)
+{
+	ena_destroy_all_tx_queues(adapter);
+	ena_destroy_all_rx_queues(adapter);
+}
+
+static int
+validate_tx_req_id(struct ena_ring *tx_ring, uint16_t req_id)
+{
+	struct ena_tx_buffer *tx_info = NULL;
+
+	if (likely(req_id < tx_ring->ring_size)) {
+		tx_info = &tx_ring->tx_buffer_info[req_id];
+		if (tx_info->mbuf)
+			return 0;
+	}
+
+	counter_u64_add(tx_ring->tx_stats.bad_req_id, 1);
+
+	return (EFAULT);
+}
+
+static int
+ena_create_io_queues(struct ena_adapter *adapter)
+{
+	struct ena_com_dev *ena_dev = adapter->ena_dev;
+	struct ena_com_create_io_ctx ctx;
+	struct ena_ring *ring;
+	uint16_t ena_qid;
+	uint32_t msix_vector;
+	int rc, i;
+
+	/* Create TX queues */
+	for (i = 0; i < adapter->num_queues; i++) {
+		msix_vector = ENA_IO_IRQ_IDX(i);
+		ena_qid = ENA_IO_TXQ_IDX(i);
+		ctx.mem_queue_type = ena_dev->tx_mem_queue_type;
+		ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX;
+		ctx.queue_size = adapter->tx_ring_size;
+		ctx.msix_vector = msix_vector;
+		ctx.qid = ena_qid;
+		rc = ena_com_create_io_queue(ena_dev, &ctx);
+		if (rc) {
+			device_printf(adapter->pdev,
+			    "Failed to create io TX queue #%d rc: %d\n", i, rc);
+			goto err_tx;
+		}
+		ring = &adapter->tx_ring[i];
+		rc = ena_com_get_io_handlers(ena_dev, ena_qid,
+		    &ring->ena_com_io_sq,
+		    &ring->ena_com_io_cq);
+		if (rc) {
+			device_printf(adapter->pdev,
+			    "Failed to get TX queue handlers. TX queue num"
+			    " %d rc: %d\n", i, rc);
+			ena_com_destroy_io_queue(ena_dev, ena_qid);
+			goto err_tx;
+		}
+	}
+
+	/* Create RX queues */
+	for (i = 0; i < adapter->num_queues; i++) {
+		msix_vector = ENA_IO_IRQ_IDX(i);
+		ena_qid = ENA_IO_RXQ_IDX(i);
+		ctx.mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
+		ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX;
+		ctx.queue_size = adapter->rx_ring_size;
+		ctx.msix_vector = msix_vector;
+		ctx.qid = ena_qid;
+		rc = ena_com_create_io_queue(ena_dev, &ctx);
+		if (rc) {
+			device_printf(adapter->pdev,
+			    "Failed to create io RX queue[%d] rc: %d\n", i, rc);
+			goto err_rx;
+		}
+
+		ring = &adapter->rx_ring[i];
+		rc = ena_com_get_io_handlers(ena_dev, ena_qid,
+		    &ring->ena_com_io_sq,
+		    &ring->ena_com_io_cq);
+		if (rc) {
+			device_printf(adapter->pdev,
+			    "Failed to get RX queue handlers. RX queue num"
+			    " %d rc: %d\n", i, rc);
+			ena_com_destroy_io_queue(ena_dev, ena_qid);
+			goto err_rx;
+		}
+	}
+
+	return (0);
+
+err_rx:
+	while (i--)
+		ena_com_destroy_io_queue(ena_dev, ENA_IO_RXQ_IDX(i));
+	i = adapter->num_queues;
+err_tx:
+	while (i--)
+		ena_com_destroy_io_queue(ena_dev, ENA_IO_TXQ_IDX(i));
+
+	return (ENXIO);
+}
+
+/**
+ * ena_tx_cleanup - clear sent packets and corresponding descriptors
+ * @tx_ring: ring for which we want to clean packets
+ *
+ * Once packets are sent, we ask the device in a loop for no longer used
+ * descriptors. We find the related mbuf chain in a map (index in an array)
+ * and free it, then update ring state.
+ * This is performed in "endless" loop, updating ring pointers every
+ * TX_COMMIT. The first check of free descriptor is performed before the actual
+ * loop, then repeated at the loop end.
+ **/
+static int
+ena_tx_cleanup(struct ena_ring *tx_ring)
+{
+	struct ena_adapter *adapter;
+	struct ena_com_io_cq* io_cq;
+	uint16_t next_to_clean;
+	uint16_t req_id;
+	uint16_t ena_qid;
+	unsigned int total_done = 0;
+	int rc;
+	int commit = TX_COMMIT;
+	int budget = TX_BUDGET;
+	int work_done;
+
+	adapter = tx_ring->que->adapter;
+	ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id);
+	io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
+	next_to_clean = tx_ring->next_to_clean;
+
+	do {
+		struct ena_tx_buffer *tx_info;
+		struct mbuf *mbuf;
+
+		rc = ena_com_tx_comp_req_id_get(io_cq, &req_id);
+		if (rc != 0)
+			break;
+
+		rc = validate_tx_req_id(tx_ring, req_id);
+		if (rc)
+			break;
+
+		tx_info = &tx_ring->tx_buffer_info[req_id];
+
+		mbuf = tx_info->mbuf;
+
+		tx_info->mbuf = NULL;
+		bintime_clear(&tx_info->timestamp);
+
+		if (tx_info->num_of_bufs != 0) {
+			/* Map is no longer required */
+			bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map);
+		}
+
+		m_freem(mbuf);
+
+		total_done += tx_info->tx_descs;
+
+		tx_ring->free_tx_ids[next_to_clean] = req_id;
+		next_to_clean = ENA_TX_RING_IDX_NEXT(next_to_clean,
+		    tx_ring->ring_size);
+
+		if (--commit == 0) {
+			commit = TX_COMMIT;
+			/* update ring state every TX_COMMIT descriptor */
+			tx_ring->next_to_clean = next_to_clean;
+			ena_com_comp_ack(&adapter->ena_dev->io_sq_queues[ena_qid], total_done);
+			ena_com_update_dev_comp_head(io_cq);
+			total_done = 0;
+		}
+	} while (--budget);
+
+	work_done = TX_BUDGET - budget;
+
+	/* If there is still something to commit update ring state */
+	if (commit != TX_COMMIT) {
+		tx_ring->next_to_clean = next_to_clean;
+		ena_com_comp_ack(&adapter->ena_dev->io_sq_queues[ena_qid], total_done);
+		ena_com_update_dev_comp_head(io_cq);
+	}
+
+	taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
+
+	return (work_done);
+}
+
+static void
+ena_rx_hash_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx,
+    struct mbuf *mbuf)
+{
+	struct ena_adapter *adapter = rx_ring->adapter;
+
+	if (adapter->rss_support) {
+		mbuf->m_pkthdr.flowid = ena_rx_ctx->hash;
+
+		if (ena_rx_ctx->frag &&
+		    ena_rx_ctx->l3_proto != ENA_ETH_IO_L4_PROTO_UNKNOWN) {
+			M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH);
+			return;
+		}
+
+		switch (ena_rx_ctx->l3_proto) {
+		case ENA_ETH_IO_L3_PROTO_IPV4:
+			switch (ena_rx_ctx->l4_proto) {
+			case ENA_ETH_IO_L4_PROTO_TCP:
+				M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV4);
+				break;
+			case ENA_ETH_IO_L4_PROTO_UDP:
+				M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV4);
+				break;
+			default:
+				M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV4);
+			}
+			break;
+		case ENA_ETH_IO_L3_PROTO_IPV6:
+			switch (ena_rx_ctx->l4_proto) {
+			case ENA_ETH_IO_L4_PROTO_TCP:
+				M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV6);
+				break;
+			case ENA_ETH_IO_L4_PROTO_UDP:
+				M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV6);
+				break;
+			default:
+				M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV6);
+			}
+			break;
+		case ENA_ETH_IO_L3_PROTO_UNKNOWN:
+			M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE);
+			break;
+		default:
+			M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH);
+		}
+	} else {
+		mbuf->m_pkthdr.flowid = rx_ring->qid;
+		M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE);
+	}
+}
+
+/**
+ * ena_rx_mbuf - assemble mbuf from descriptors
+ * @rx_ring: ring for which we want to clean packets
+ * @ena_bufs: buffer info
+ * @ena_rx_ctx: metadata for this packet(s)
+ * @next_to_clean: ring pointer
+ *
+ **/
+static struct mbuf*
+ena_rx_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_buf_info *ena_bufs,
+    struct ena_com_rx_ctx *ena_rx_ctx, uint16_t *next_to_clean)
+{
+	struct mbuf *mbuf;
+	struct ena_rx_buffer *rx_info;
+	struct ena_adapter *adapter;
+	unsigned int len, buf = 0;
+	unsigned int descs = ena_rx_ctx->descs;
+
+	adapter = rx_ring->adapter;
+	rx_info = &rx_ring->rx_buffer_info[*next_to_clean];
+
+	ENA_ASSERT(rx_info->mbuf, "Invalid alloc frag buffer\n");
+
+	len = ena_bufs[0].len;
+	ena_trace(ENA_DBG | ENA_RXPTH, "rx_info %p, mbuf %p, paddr %jx",
+	    rx_info, rx_info->mbuf, (uintmax_t)rx_info->ena_buf.paddr);
+
+	mbuf = rx_info->mbuf;
+	mbuf->m_flags |= M_PKTHDR;
+	mbuf->m_pkthdr.len = len;
+	mbuf->m_len = len;
+	mbuf->m_pkthdr.rcvif = rx_ring->que->adapter->ifp;
+
+	/* Fill mbuf with hash key and it's interpretation for optimization */
+	ena_rx_hash_mbuf(rx_ring, ena_rx_ctx, mbuf);
+
+	ena_trace(ENA_DBG | ENA_RXPTH, "rx mbuf 0x%p, flags=0x%x, len: %d",
+	    mbuf, mbuf->m_flags, mbuf->m_pkthdr.len);
+
+	/* DMA address is not needed anymore, unmap it */
+	bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map);
+
+	rx_info->mbuf = NULL;
+	*next_to_clean = ENA_RX_RING_IDX_NEXT(*next_to_clean,
+	    rx_ring->ring_size);
+
+	/*
+	 * While we have more than 1 descriptors for one rcvd packet, append
+	 * other mbufs to the main one
+	 */
+	while (--descs) {
+		rx_info = &rx_ring->rx_buffer_info[*next_to_clean];
+		len = ena_bufs[++buf].len;
+
+		if (!m_append(mbuf, len, rx_info->mbuf->m_data)) {
+			counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1);
+			ena_trace(ENA_WARNING, "Failed to append Rx mbuf %p",
+			    mbuf);
+		}
+		/* Free already appended mbuf, it won't be useful anymore */
+		bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map);
+		m_freem(rx_info->mbuf);
+		rx_info->mbuf = NULL;
+
+		*next_to_clean = ENA_RX_RING_IDX_NEXT(*next_to_clean,
+		    rx_ring->ring_size);
+	}
+
+	return (mbuf);
+}
+
+/**
+ * ena_rx_checksum - indicate in mbuf if hw indicated a good cksum
+ **/
+static inline void
+ena_rx_checksum(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx,
+    struct mbuf *mbuf)
+{
+
+	/* if IP and error */
+	if ((ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV4) &&
+	    (ena_rx_ctx->l3_csum_err)) {
+		/* ipv4 checksum error */
+		mbuf->m_pkthdr.csum_flags = 0;
+		counter_u64_add(rx_ring->rx_stats.bad_csum, 1);
+		return;
+	}
+
+	/* if TCP/UDP */
+	if ((ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_TCP) ||
+	    (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_UDP)) {
+		if (ena_rx_ctx->l4_csum_err) {
+			/* TCP/UDP checksum error */
+			mbuf->m_pkthdr.csum_flags = 0;
+			counter_u64_add(rx_ring->rx_stats.bad_csum, 1);
+		} else {
+			mbuf->m_pkthdr.csum_flags = CSUM_IP_CHECKED;
+			mbuf->m_pkthdr.csum_flags |= CSUM_IP_VALID;
+		}
+	}
+
+	return;
+}
+
+/**
+ * ena_rx_cleanup - handle rx irq
+ * @arg: ring for which irq is being handled
+ **/
+static int
+ena_rx_cleanup(struct ena_ring *rx_ring)
+{
+	struct ena_adapter *adapter;
+	struct mbuf *mbuf;
+	struct ena_com_rx_ctx ena_rx_ctx;
+	struct ena_com_io_cq* io_cq;
+	struct ena_com_io_sq* io_sq;
+	/* struct ena_eth_io_intr_reg intr_reg; */
+	if_t ifp;
+	uint16_t ena_qid;
+	uint16_t next_to_clean;
+	uint32_t refill_required;
+	uint32_t refill_threshold;
+	uint32_t do_if_input = 0;
+	unsigned int qid;
+	int rc;
+	int budget = RX_BUDGET;
+
+	adapter = rx_ring->que->adapter;
+	ifp = adapter->ifp;
+	qid = rx_ring->que->id;
+	ena_qid = ENA_IO_RXQ_IDX(qid);
+	io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
+	io_sq = &adapter->ena_dev->io_sq_queues[ena_qid];
+	next_to_clean = rx_ring->next_to_clean;
+
+	do {
+		ena_rx_ctx.ena_bufs = rx_ring->ena_bufs;
+		ena_rx_ctx.max_bufs = adapter->max_rx_sgl_size;
+		ena_rx_ctx.descs = 0;
+		rc = ena_com_rx_pkt(io_cq, io_sq, &ena_rx_ctx);
+
+		if (unlikely(rc))
+			goto error;
+
+		if (unlikely(ena_rx_ctx.descs == 0))
+			break;
+
+		/* Receive mbuf from the ring */
+		mbuf = ena_rx_mbuf(rx_ring, rx_ring->ena_bufs,
+		    &ena_rx_ctx, &next_to_clean);
+
+		/* Exit if we failed to retrieve a buffer */
+		if (unlikely(!mbuf)) {
+			next_to_clean = ENA_RX_RING_IDX_ADD(next_to_clean,
+			    ena_rx_ctx.descs, rx_ring->ring_size);
+			break;
+		}
+		ena_trace(ENA_DBG | ENA_RXPTH, "Rx: %d bytes",
+		    mbuf->m_pkthdr.len);
+
+		if ((ifp->if_capenable & IFCAP_RXCSUM) ||
+		    (ifp->if_capenable & IFCAP_RXCSUM_IPV6)) {
+			ena_rx_checksum(rx_ring, &ena_rx_ctx, mbuf);
+		}
+
+		counter_u64_add(rx_ring->rx_stats.bytes, mbuf->m_pkthdr.len);
+		/*
+		 * LRO is only for IP/TCP packets and TCP checksum of the packet
+		 * should be computed by hardware.
+		 */
+		do_if_input = 1;
+		if ((ifp->if_capenable & IFCAP_LRO) &&
+		    (mbuf->m_pkthdr.csum_flags & CSUM_IP_VALID) &&
+		    ena_rx_ctx.l4_proto == ENA_ETH_IO_L4_PROTO_TCP) {
+			/*
+			 * Send to the stack if:
+			 *  - LRO not enabled, or
+			 *  - no LRO resources, or
+			 *  - lro enqueue fails
+			 */
+			if (rx_ring->lro.lro_cnt != 0 &&
+			    tcp_lro_rx(&rx_ring->lro, mbuf, 0) == 0)
+					do_if_input = 0;
+		}
+		if (do_if_input) {
+			ena_trace(ENA_DBG | ENA_RXPTH, "calling if_input() with mbuf %p",
+			    mbuf);
+			(*ifp->if_input)(ifp, mbuf);
+		}
+
+		counter_u64_add(rx_ring->rx_stats.cnt, 1);
+	} while (--budget);
+
+	rx_ring->next_to_clean = next_to_clean;
+
+	refill_required = ena_com_sq_empty_space(io_sq);
+	refill_threshold = rx_ring->ring_size / ENA_RX_REFILL_THRESH_DEVIDER;
+
+	if (refill_required > refill_threshold) {
+		ena_com_update_dev_comp_head(rx_ring->ena_com_io_cq);
+		ena_refill_rx_bufs(rx_ring, refill_required);
+	}
+
+	tcp_lro_flush_all(&rx_ring->lro);
+
+	return (RX_BUDGET - budget);
+
+error:
+	counter_u64_add(rx_ring->rx_stats.bad_desc_num, 1);
+	return (RX_BUDGET - budget);
+}
+
+/*********************************************************************
+ *
+ *  MSIX & Interrupt Service routine
+ *
+ **********************************************************************/
+
+/**
+ * ena_handle_msix - MSIX Interrupt Handler for admin/async queue
+ * @arg: interrupt number
+ **/
+static void
+ena_intr_msix_mgmnt(void *arg)
+{
+	struct ena_adapter *adapter = (struct ena_adapter *)arg;
+
+	ena_com_admin_q_comp_intr_handler(adapter->ena_dev);
+	if (likely(adapter->running))
+		ena_com_aenq_intr_handler(adapter->ena_dev, arg);
+}
+
+/**
+ * ena_handle_msix - MSIX Interrupt Handler for Tx/Rx
+ * @arg: interrupt number
+ **/
+static void
+ena_handle_msix(void *arg)
+{
+	struct ena_que	*que = arg;
+	struct ena_adapter *adapter = que->adapter;
+	if_t ifp = adapter->ifp;
+	struct ena_ring *tx_ring;
+	struct ena_ring *rx_ring;
+	struct ena_com_io_cq* io_cq;
+	struct ena_eth_io_intr_reg intr_reg;
+	int qid, ena_qid;
+	int txc, rxc, i;
+
+	if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+		return;
+
+	ena_trace(ENA_DBG, "MSI-X TX/RX routine");
+
+	tx_ring = que->tx_ring;
+	rx_ring = que->rx_ring;
+	qid = que->id;
+	ena_qid = ENA_IO_TXQ_IDX(qid);
+	io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
+
+	for (i = 0; i < CLEAN_BUDGET; ++i) {
+		rxc = ena_rx_cleanup(rx_ring);
+
+		/* Protection from calling ena_tx_cleanup from ena_start_xmit */
+		ENA_RING_MTX_LOCK(tx_ring);
+		txc = ena_tx_cleanup(tx_ring);
+		ENA_RING_MTX_UNLOCK(tx_ring);
+
+		if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+			return;
+
+		if (txc != TX_BUDGET && rxc != RX_BUDGET)
+		       break;
+	}
+
+	/* Signal that work is done and unmask interrupt */
+	ena_com_update_intr_reg(&intr_reg,
+	    RX_IRQ_INTERVAL,
+	    TX_IRQ_INTERVAL,
+	    true);
+	ena_com_unmask_intr(io_cq, &intr_reg);
+}
+
+static int
+ena_enable_msix(struct ena_adapter *adapter)
+{
+	device_t dev = adapter->pdev;
+	int i, msix_vecs, rc = 0;
+
+	/* Reserved the max msix vectors we might need */
+	msix_vecs = ENA_MAX_MSIX_VEC(adapter->num_queues);
+
+	adapter->msix_entries = ENA_MEM_ALLOC(adapter->ena_dev->dmadev,
+	    msix_vecs * sizeof(struct msix_entry));
+	if (!adapter->msix_entries) {
+		device_printf(dev,
+		    "Failed to allocate msix_entries, vectors %d\n", msix_vecs);
+		rc = ENOMEM;
+		goto error;
+	}
+	device_printf(dev, "Allocated msix_entries, vectors (cnt: %d)\n",
+	    msix_vecs);
+
+	for (i = 0; i < msix_vecs; i++) {
+		adapter->msix_entries[i].entry = i;
+		/* Vectors must start from 1 */
+		adapter->msix_entries[i].vector = i + 1;
+	}
+
+	rc = pci_alloc_msix(dev, &msix_vecs);
+	if (rc != 0) {
+		device_printf(dev,
+		    "Failed to enable MSIX, vectors %d rc %d\n", msix_vecs, rc);
+		ENA_MEM_FREE(adapter->ena_dev->dmadev, adapter->msix_entries);
+		adapter->msix_entries = NULL;
+		rc = ENOSPC;
+		goto error;
+	}
+
+	adapter->msix_vecs = msix_vecs;
+	adapter->msix_enabled = true;
+
+error:
+	return (rc);
+}
+
+static void
+ena_setup_mgmnt_intr(struct ena_adapter *adapter)
+{
+
+	snprintf(adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].name,
+	    ENA_IRQNAME_SIZE, "ena-mgmnt@pci:%s",
+	    device_get_nameunit(adapter->pdev));
+	/*
+	 * Handler is NULL on purpose, it will be set
+	 * when mgmnt interrupt is acquired
+	 */
+	adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].handler = NULL;
+	adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].data = adapter;
+	adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].vector =
+	    adapter->msix_entries[ENA_MGMNT_IRQ_IDX].vector;
+
+	return;
+}
+
+static void
+ena_setup_io_intr(struct ena_adapter *adapter)
+{
+	static int last_bind_cpu = -1;
+	int irq_idx;
+	ena_trace(ENA_DBG, "enter");
+
+	for (int i = 0; i < adapter->num_queues; i++) {
+		irq_idx = ENA_IO_IRQ_IDX(i);
+
+		snprintf(adapter->irq_tbl[irq_idx].name, ENA_IRQNAME_SIZE,
+		    "%s-TxRx-%d", device_get_nameunit(adapter->pdev), i);
+		adapter->irq_tbl[irq_idx].handler = ena_handle_msix;
+		adapter->irq_tbl[irq_idx].data = &adapter->que[i];
+		adapter->irq_tbl[irq_idx].vector =
+		    adapter->msix_entries[irq_idx].vector;
+		ena_trace(ENA_INFO | ENA_IOQ, "ena_setup_io_intr vector: %d\n",
+		    adapter->msix_entries[irq_idx].vector);
+#ifdef	RSS
+		adapter->que[i].cpu = adapter->irq_tbl[irq_idx].cpu =
+		    rss_getcpu(i % rss_getnumbuckets());
+#else
+		/*
+		 * We still want to bind rings to the corresponding cpu
+		 * using something similar to the RSS round-robin technique.
+		 */
+		if (last_bind_cpu < 0)
+			last_bind_cpu = CPU_FIRST();
+		adapter->que[i].cpu = adapter->irq_tbl[irq_idx].cpu =
+		    last_bind_cpu;
+		last_bind_cpu = CPU_NEXT(last_bind_cpu);
+#endif
+	}
+
+	return;
+}
+
+static int
+ena_request_mgmnt_irq(struct ena_adapter *adapter)
+{
+	struct ena_irq *irq;
+	unsigned long flags;
+	int rc, rcc;
+
+	flags = RF_ACTIVE | RF_SHAREABLE;
+
+	irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX];
+	irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ,
+	    &irq->vector, flags);
+
+	if (irq->res == NULL) {
+		device_printf(adapter->pdev, "could not allocate "
+		    "irq vector: %d\n", irq->vector);
+		rc = ENXIO;
+		goto exit_res;
+	}
+
+	if ((rc = bus_activate_resource(adapter->pdev, SYS_RES_IRQ, irq->vector,
+	    irq->res)) != 0) {
+		device_printf(adapter->pdev, "could not activate "
+		    "irq vector: %d\n", irq->vector);
+		goto exit_intr;
+	}
+
+	if ((rc = bus_setup_intr(adapter->pdev, irq->res,
+	    INTR_TYPE_NET | INTR_MPSAFE, NULL,
+	    ena_intr_msix_mgmnt, irq->data, &irq->cookie)) != 0) {
+		device_printf(adapter->pdev, "failed to register "
+		    "interrupt handler for irq %ju: %d\n",
+		    rman_get_start(irq->res), rc);
+		goto exit_intr;
+	}
+	irq->requested = true;
+
+	return (rc);
+
+exit_intr:
+	device_printf(adapter->pdev, "exit_intr: releasing resource"
+	    " for irq %d\n", irq->vector);
+	rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ,
+	    irq->vector, irq->res);
+	if (rcc)
+		device_printf(adapter->pdev, "dev has no parent while "
+		    "releasing res for irq: %d\n", irq->vector);
+	irq->res = NULL;
+
+exit_res:
+	return (rc);
+}
+
+static int
+ena_request_io_irq(struct ena_adapter *adapter)
+{
+	struct ena_irq *irq;
+	unsigned long flags = 0;
+	int rc = 0, i, rcc;
+
+	if (!adapter->msix_enabled) {
+		device_printf(adapter->pdev, "failed to request irq\n");
+		return (EINVAL);
+	} else {
+		flags = RF_ACTIVE | RF_SHAREABLE;
+	}
+
+	for (i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) {
+		irq = &adapter->irq_tbl[i];
+
+		if (irq->requested)
+			continue;
+
+		irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ,
+		    &irq->vector, flags);
+		if (irq->res == NULL) {
+			device_printf(adapter->pdev, "could not allocate "
+			    "irq vector: %d\n", irq->vector);
+			goto err;
+		}
+
+		if ((rc = bus_setup_intr(adapter->pdev, irq->res,
+			    INTR_TYPE_NET | INTR_MPSAFE, NULL, irq->handler,
+			    irq->data, &irq->cookie)) != 0) {
+			device_printf(adapter->pdev, "failed to register "
+			    "interrupt handler for irq %ju: %d\n",
+			    rman_get_start(irq->res), rc);
+			goto err;
+		}
+		irq->requested = true;
+
+#ifdef	RSS
+		device_printf(adapter->pdev, "queue %d - RSS bucket %d\n",
+		    i - ENA_IO_IRQ_FIRST_IDX, irq->cpu);
+#else
+		device_printf(adapter->pdev, "queue %d - cpu %d\n",
+		    i - ENA_IO_IRQ_FIRST_IDX, irq->cpu);
+#endif
+	}
+
+	return (rc);
+
+err:
+
+	for (; i >= ENA_IO_IRQ_FIRST_IDX; i--) {
+		irq = &adapter->irq_tbl[i];
+		rcc = 0;
+
+		/* Once we entered err: section and irq->requested is true we
+		   free both intr and resources */
+		if (irq->requested == true)
+			rcc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie);
+		if (rcc)
+			device_printf(adapter->pdev, "could not release"
+			    " irq: %d, error: %d\n", irq->vector, rcc);
+
+		/* If we entred err: section without irq->requested set we know
+		   it was bus_alloc_resource_any() that needs cleanup, provided
+		   res is not NULL. In case res is NULL no work in needed in
+		   this iteration */
+		rcc = 0;
+		if (irq->res != NULL) {
+			rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ,
+			    irq->vector, irq->res);
+		}
+		if (rcc)
+			device_printf(adapter->pdev, "dev has no parent while "
+			    "releasing res for irq: %d\n", irq->vector);
+		irq->requested = false;
+		irq->res = NULL;
+	}
+
+	return (rc);
+}
+
+static void
+ena_free_mgmnt_irq(struct ena_adapter *adapter)
+{
+	struct ena_irq *irq;
+	int rc;
+
+	irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX];
+	if (irq->requested) {
+		ena_trace(ENA_INFO | ENA_ADMQ, "tear down irq: %d\n",
+		    irq->vector);
+		rc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie);
+		if (rc)
+			device_printf(adapter->pdev, "failed to tear "
+			    "down irq: %d\n", irq->vector);
+		irq->requested = 0;
+	}
+
+	if (irq->res != NULL) {
+		ena_trace(ENA_INFO | ENA_ADMQ, "release resource irq: %d\n",
+		    irq->vector);
+		rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ,
+		    irq->vector, irq->res);
+		irq->res = NULL;
+		if (rc)
+			device_printf(adapter->pdev, "dev has no parent while "
+			    "releasing res for irq: %d\n", irq->vector);
+	}
+
+	return;
+}
+
+static void
+ena_free_io_irq(struct ena_adapter *adapter)
+{
+	struct ena_irq *irq;
+	int rc;
+
+	for (int i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) {
+		irq = &adapter->irq_tbl[i];
+		if (irq->requested) {
+			ena_trace(ENA_INFO | ENA_IOQ, "tear down irq: %d\n",
+			    irq->vector);
+			rc = bus_teardown_intr(adapter->pdev, irq->res,
+			    irq->cookie);
+			if (rc) {
+				device_printf(adapter->pdev, "failed to tear "
+				    "down irq: %d\n", irq->vector);
+			}
+			irq->requested = 0;
+		}
+
+		if (irq->res != NULL) {
+			ena_trace(ENA_INFO | ENA_IOQ, "release resource irq: %d\n",
+			    irq->vector);
+			rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ,
+			    irq->vector, irq->res);
+			irq->res = NULL;
+			if (rc) {
+				device_printf(adapter->pdev, "dev has no parent"
+				    " while releasing res for irq: %d\n",
+				    irq->vector);
+			}
+		}
+	}
+
+	return;
+}
+
+static void
+ena_free_irqs(struct ena_adapter* adapter)
+{
+
+	ena_free_io_irq(adapter);
+	ena_free_mgmnt_irq(adapter);
+	ena_disable_msix(adapter);
+}
+
+static void
+ena_disable_msix(struct ena_adapter *adapter)
+{
+
+	pci_release_msi(adapter->pdev);
+
+	adapter->msix_vecs = 0;
+	ENA_MEM_FREE(adapter->ena_dev->dmadev, adapter->msix_entries);
+	adapter->msix_entries = NULL;
+}
+
+static void
+ena_unmask_all_io_irqs(struct ena_adapter *adapter)
+{
+	struct ena_com_io_cq* io_cq;
+	struct ena_eth_io_intr_reg intr_reg;
+	uint16_t ena_qid;
+	int i;
+
+	/* Unmask interrupts for all queues */
+	for (i = 0; i < adapter->num_queues; i++) {
+		ena_qid = ENA_IO_TXQ_IDX(i);
+		io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
+		ena_com_update_intr_reg(&intr_reg, 0, 0, true);
+		ena_com_unmask_intr(io_cq, &intr_reg);
+	}
+}
+
+/* Configure the Rx forwarding */
+static int ena_rss_configure(struct ena_adapter *adapter)
+{
+	struct ena_com_dev *ena_dev = adapter->ena_dev;
+	int rc;
+
+	/* Set indirect table */
+	rc = ena_com_indirect_table_set(ena_dev);
+	if (unlikely(rc && rc != EPERM))
+		return rc;
+
+	/* Configure hash function (if supported) */
+	rc = ena_com_set_hash_function(ena_dev);
+	if (unlikely(rc && (rc != EPERM)))
+		return rc;
+
+	/* Configure hash inputs (if supported) */
+	rc = ena_com_set_hash_ctrl(ena_dev);
+	if (unlikely(rc && (rc != EPERM)))
+		return rc;
+
+	return 0;
+}
+
+static void
+ena_update_hw_stats(void *arg, int pending)
+{
+	struct ena_adapter *adapter = arg;
+	int rc;
+
+	for (;;) {
+		if (!adapter->up)
+			return;
+
+		rc = ena_update_stats_counters(adapter);
+		if (rc)
+			ena_trace(ENA_WARNING,
+			    "Error updating stats counters, rc = %d", rc);
+
+		pause("ena update hw stats", hz);
+	}
+}
+
+static int
+ena_up_complete(struct ena_adapter *adapter)
+{
+	int rc;
+
+	if (adapter->rss_support) {
+		rc = ena_rss_configure(adapter);
+		if (rc)
+			return (rc);
+	}
+
+	ena_change_mtu(adapter->ifp, adapter->ifp->if_mtu);
+	ena_refill_all_rx_bufs(adapter);
+
+	return (0);
+}
+
+static int
+ena_up(struct ena_adapter *adapter)
+{
+	int rc = 0;
+
+	if (!device_is_attached(adapter->pdev)) {
+		device_printf(adapter->pdev, "device is not attached!\n");
+		return (ENXIO);
+	}
+
+	if (!adapter->running) {
+		device_printf(adapter->pdev, "device is not running!\n");
+		return (ENXIO);
+	}
+
+	if (!adapter->up) {
+		device_printf(adapter->pdev, "device is going UP\n");
+
+		/* setup interrupts for IO queues */
+		ena_setup_io_intr(adapter);
+		rc = ena_request_io_irq(adapter);
+		if (rc) {
+			ena_trace(ENA_ALERT, "err_req_irq");
+			goto err_req_irq;
+		}
+
+		/* allocate transmit descriptors */
+		rc = ena_setup_all_tx_resources(adapter);
+		if (rc) {
+			ena_trace(ENA_ALERT, "err_setup_tx");
+			goto err_setup_tx;
+		}
+
+		/* allocate receive descriptors */
+		rc = ena_setup_all_rx_resources(adapter);
+		if (rc) {
+			ena_trace(ENA_ALERT, "err_setup_rx");
+			goto err_setup_rx;
+		}
+
+		/* create IO queues for Rx & Tx */
+		rc = ena_create_io_queues(adapter);
+		if (rc) {
+			ena_trace(ENA_ALERT,
+			    "create IO queues failed");
+			goto err_io_que;
+		}
+
+		if (adapter->link_status)
+			if_link_state_change(adapter->ifp, LINK_STATE_UP);
+
+		rc = ena_up_complete(adapter);
+		if (rc)
+			goto err_up_complete;
+
+		counter_u64_add(adapter->dev_stats.interface_up, 1);
+
+		ena_update_hwassist(adapter);
+
+		if_setdrvflagbits(adapter->ifp, IFF_DRV_RUNNING,
+		    IFF_DRV_OACTIVE);
+
+		callout_reset_sbt(&adapter->timer_service, SBT_1S, SBT_1S,
+		    ena_timer_service, (void *)adapter, 0);
+
+		taskqueue_enqueue(adapter->stats_tq, &adapter->stats_task);
+
+		adapter->up = true;
+
+		ena_unmask_all_io_irqs(adapter);
+	}
+
+	return (0);
+
+err_up_complete:
+	ena_destroy_all_io_queues(adapter);
+err_io_que:
+	ena_free_all_rx_resources(adapter);
+err_setup_rx:
+	ena_free_all_tx_resources(adapter);
+err_setup_tx:
+	ena_free_io_irq(adapter);
+err_req_irq:
+	return (rc);
+}
+
+int
+ena_update_stats_counters(struct ena_adapter *adapter)
+{
+	struct ena_admin_basic_stats ena_stats;
+	struct ena_hw_stats *stats = &adapter->hw_stats;
+	int rc = 0;
+
+	if (!adapter->up)
+		return (rc);
+
+	rc = ena_com_get_dev_basic_stats(adapter->ena_dev, &ena_stats);
+	if (rc)
+		return (rc);
+
+	stats->tx_bytes = ((uint64_t)ena_stats.tx_bytes_high << 32) |
+		ena_stats.tx_bytes_low;
+	stats->rx_bytes = ((uint64_t)ena_stats.rx_bytes_high << 32) |
+		ena_stats.rx_bytes_low;
+
+	stats->rx_packets = ((uint64_t)ena_stats.rx_pkts_high << 32) |
+		ena_stats.rx_pkts_low;
+	stats->tx_packets = ((uint64_t)ena_stats.tx_pkts_high << 32) |
+		ena_stats.tx_pkts_low;
+
+	stats->rx_drops = ((uint64_t)ena_stats.rx_drops_high << 32) |
+		ena_stats.rx_drops_low;
+
+	return (0);
+}
+
+static uint64_t
+ena_get_counter(if_t ifp, ift_counter cnt)
+{
+	struct ena_adapter *adapter;
+	struct ena_hw_stats *stats;
+
+	adapter = if_getsoftc(ifp);
+	stats = &adapter->hw_stats;
+
+	switch (cnt) {
+	case IFCOUNTER_IPACKETS:
+		return (stats->rx_packets);
+	case IFCOUNTER_OPACKETS:
+		return (stats->tx_packets);
+	case IFCOUNTER_IBYTES:
+		return (stats->rx_bytes);
+	case IFCOUNTER_OBYTES:
+		return (stats->tx_bytes);
+	case IFCOUNTER_IQDROPS:
+		return (stats->rx_drops);
+	default:
+		return (if_get_counter_default(ifp, cnt));
+	}
+}
+
+static int
+ena_media_change(if_t ifp)
+{
+	/* Media Change is not supported by firmware */
+	return (0);
+}
+
+static void
+ena_media_status(if_t ifp, struct ifmediareq *ifmr)
+{
+	struct ena_adapter *adapter = if_getsoftc(ifp);
+	ena_trace(ENA_DBG, "enter");
+
+	ENA_DEV_LOCK;
+
+	ifmr->ifm_status = IFM_AVALID;
+	ifmr->ifm_active = IFM_ETHER;
+
+	if (!adapter->link_status) {
+		ENA_DEV_UNLOCK;
+		ena_trace(ENA_WARNING, "link_status = false");
+		return;
+	}
+
+	ifmr->ifm_status |= IFM_ACTIVE;
+	ifmr->ifm_active |= IFM_10G_T | IFM_FDX;
+
+	ENA_DEV_UNLOCK;
+
+	return;
+}
+
+static void
+ena_init(void *arg)
+{
+	struct ena_adapter *adapter = (struct ena_adapter *)arg;
+
+	if (adapter->up == false) {
+		sx_xlock(&adapter->ioctl_sx);
+		ena_up(adapter);
+		sx_unlock(&adapter->ioctl_sx);
+	}
+
+	return;
+}
+
+static int
+ena_ioctl(if_t ifp, u_long command, caddr_t data)
+{
+	struct ena_adapter *adapter;
+	struct ifreq *ifr;
+	int rc;
+
+	adapter = ifp->if_softc;
+	ifr = (struct ifreq *)data;
+
+	/*
+	 * Acquiring lock to prevent from running up and down routines parallel.
+	 */
+	rc = 0;
+	switch (command) {
+	case SIOCSIFMTU:
+		sx_xlock(&adapter->ioctl_sx);
+		ena_down(adapter);
+
+		ena_change_mtu(ifp, ifr->ifr_mtu);
+
+		rc = ena_up(adapter);
+		sx_unlock(&adapter->ioctl_sx);
+		break;
+
+	case SIOCSIFFLAGS:
+		if (ifp->if_flags & IFF_UP) {
+			if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
+				if (ifp->if_flags & (IFF_PROMISC |
+				    IFF_ALLMULTI)) {
+					device_printf(adapter->pdev,
+					    "ioctl promisc/allmulti\n");
+				}
+			} else {
+				sx_xlock(&adapter->ioctl_sx);
+				rc = ena_up(adapter);
+				sx_unlock(&adapter->ioctl_sx);
+			}
+		} else {
+			if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
+				sx_xlock(&adapter->ioctl_sx);
+				ena_down(adapter);
+				sx_unlock(&adapter->ioctl_sx);
+			}
+		}
+		break;
+
+	case SIOCADDMULTI:
+	case SIOCDELMULTI:
+		break;
+
+	case SIOCSIFMEDIA:
+	case SIOCGIFMEDIA:
+		rc = ifmedia_ioctl(ifp, ifr, &adapter->media, command);
+		break;
+
+	case SIOCSIFCAP:
+		{
+			int reinit = 0;
+
+			if (ifr->ifr_reqcap != ifp->if_capenable) {
+				ifp->if_capenable = ifr->ifr_reqcap;
+				reinit = 1;
+			}
+
+			if (reinit && (ifp->if_drv_flags & IFF_DRV_RUNNING)) {
+				sx_xlock(&adapter->ioctl_sx);
+				ena_down(adapter);
+				rc = ena_up(adapter);
+				sx_unlock(&adapter->ioctl_sx);
+			}
+		}
+
+		break;
+	default:
+		rc = ether_ioctl(ifp, command, data);
+		break;
+	}
+
+	return (rc);
+}
+
+static int
+ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *feat)
+{
+	int caps = 0;
+
+	if (feat->offload.tx &
+	    (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK |
+	    ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK |
+	    ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK))
+		caps |= IFCAP_TXCSUM;
+
+	if (feat->offload.tx &
+	    (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK |
+	    ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK))
+		caps |= IFCAP_TXCSUM_IPV6;
+
+	if (feat->offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK)
+		caps |= IFCAP_TSO4;
+
+	if (feat->offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_MASK)
+		caps |= IFCAP_TSO6;
+
+	if (feat->offload.rx_supported &
+	    (ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK |
+	    ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK))
+		caps |= IFCAP_RXCSUM;
+
+	if (feat->offload.rx_supported &
+	    ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK)
+		caps |= IFCAP_RXCSUM_IPV6;
+
+	caps |= IFCAP_LRO | IFCAP_JUMBO_MTU;
+
+	return (caps);
+}
+
+static void
+ena_update_host_info(struct ena_admin_host_info *host_info, if_t ifp)
+{
+
+	host_info->supported_network_features[0] =
+	    (uint32_t)if_getcapabilities(ifp);
+}
+
+static void
+ena_update_hwassist(struct ena_adapter *adapter)
+{
+	if_t ifp = adapter->ifp;
+	uint32_t feat = adapter->tx_offload_cap;
+	int cap = if_getcapenable(ifp);
+	int flags = 0;
+
+	if_clearhwassist(ifp);
+
+	if (cap & IFCAP_TXCSUM) {
+		if (feat & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK)
+			flags |= CSUM_IP;
+		if (feat &
+		    (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK |
+		    ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK))
+			flags |= CSUM_IP_UDP | CSUM_IP_TCP;
+	}
+
+	if (cap & IFCAP_TXCSUM_IPV6)
+		flags |= CSUM_IP6_UDP | CSUM_IP6_TCP;
+
+	if (cap & IFCAP_TSO4)
+		flags |= CSUM_IP_TSO;
+
+	if (cap & IFCAP_TSO6)
+		flags |= CSUM_IP6_TSO;
+
+	if_sethwassistbits(ifp, flags, 0);
+}
+
+static int
+ena_setup_ifnet(device_t pdev, struct ena_adapter *adapter,
+    struct ena_com_dev_get_features_ctx *feat)
+{
+	if_t ifp;
+	int caps = 0;
+
+	ena_trace(ENA_DBG, "enter");
+
+	ifp = adapter->ifp = if_gethandle(IFT_ETHER);
+	if (ifp == 0) {
+		device_printf(pdev, "can not allocate ifnet structure\n");
+		return (ENXIO);
+	}
+	if_initname(ifp, device_get_name(pdev), device_get_unit(pdev));
+	if_setdev(ifp, pdev);
+	if_setsoftc(ifp, adapter);
+
+	if_setflags(ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
+	if_setinitfn(ifp, ena_init);
+	if_settransmitfn(ifp, ena_mq_start);
+	if_setqflushfn(ifp, ena_qflush);
+	if_setioctlfn(ifp, ena_ioctl);
+	if_setgetcounterfn(ifp, ena_get_counter);
+
+	if_setsendqlen(ifp, adapter->tx_ring_size);
+	if_setsendqready(ifp);
+	if_setmtu(ifp, ETHERMTU);
+	if_setbaudrate(ifp, 0);
+	/* Zeroize capabilities... */
+	if_setcapabilities(ifp, 0);
+	if_setcapenable(ifp, 0);
+	/* check hardware support */
+	caps = ena_get_dev_offloads(feat);
+	/* ... and set them */
+	if_setcapabilitiesbit(ifp, caps, 0);
+
+	/* TSO parameters */
+	ifp->if_hw_tsomax = ENA_TSO_MAXSIZE -
+	    (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN);
+	ifp->if_hw_tsomaxsegcount = adapter->max_tx_sgl_size - 1;
+	ifp->if_hw_tsomaxsegsize = ENA_TSO_MAXSIZE;
+
+	if_setifheaderlen(ifp, sizeof(struct ether_vlan_header));
+	if_setcapenable(ifp, if_getcapabilities(ifp));
+
+	/*
+	 * Specify the media types supported by this adapter and register
+	 * callbacks to update media and link information
+	 */
+	ifmedia_init(&adapter->media, IFM_IMASK,
+	    ena_media_change, ena_media_status);
+	ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL);
+	ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO);
+
+	ether_ifattach(ifp, adapter->mac_addr);
+
+	return (0);
+}
+
+static void
+ena_down(struct ena_adapter *adapter)
+{
+
+	if (adapter->up) {
+		device_printf(adapter->pdev, "device is going DOWN\n");
+
+		callout_drain(&adapter->timer_service);
+
+		adapter->up = false;
+		if_setdrvflagbits(adapter->ifp, IFF_DRV_OACTIVE,
+		    IFF_DRV_RUNNING);
+
+		/* Drain task responsible for updating hw stats */
+		while (taskqueue_cancel(adapter->stats_tq, &adapter->stats_task, NULL))
+			taskqueue_drain(adapter->stats_tq, &adapter->stats_task);
+
+		ena_free_io_irq(adapter);
+
+		ena_destroy_all_io_queues(adapter);
+
+		ena_free_all_tx_bufs(adapter);
+		ena_free_all_rx_bufs(adapter);
+		ena_free_all_tx_resources(adapter);
+		ena_free_all_rx_resources(adapter);
+
+		counter_u64_add(adapter->dev_stats.interface_down, 1);
+	}
+
+	return;
+}
+
+static void
+ena_tx_csum(struct ena_com_tx_ctx *ena_tx_ctx, struct mbuf *mbuf)
+{
+	struct ena_com_tx_meta *ena_meta;
+	struct ether_vlan_header *eh;
+	u32 mss;
+	bool offload;
+	uint16_t etype;
+	int ehdrlen;
+	struct ip *ip;
+	int iphlen;
+	struct tcphdr *th;
+
+	offload = false;
+	ena_meta = &ena_tx_ctx->ena_meta;
+	mss = mbuf->m_pkthdr.tso_segsz;
+
+	if (mss != 0)
+		offload = true;
+
+	if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0)
+		offload = true;
+
+	if ((mbuf->m_pkthdr.csum_flags & CSUM_OFFLOAD) != 0)
+		offload = true;
+
+	if (offload == false) {
+		ena_tx_ctx->meta_valid = 0;
+		return;
+	}
+
+	/* Determine where frame payload starts. */
+	eh = mtod(mbuf, struct ether_vlan_header *);
+	if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) {
+		etype = ntohs(eh->evl_proto);
+		ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN;
+	} else {
+		etype = ntohs(eh->evl_encap_proto);
+		ehdrlen = ETHER_HDR_LEN;
+	}
+
+	ip = (struct ip *)(mbuf->m_data + ehdrlen);
+	iphlen = ip->ip_hl << 2;
+	th = (struct tcphdr *)((caddr_t)ip + iphlen);
+
+	if ((mbuf->m_pkthdr.csum_flags & CSUM_IP) != 0) {
+		ena_tx_ctx->l3_csum_enable = 1;
+	}
+	if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
+		ena_tx_ctx->tso_enable = 1;
+		ena_meta->l4_hdr_len = (th->th_off);
+	}
+
+	switch (etype) {
+	case ETHERTYPE_IP:
+		ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV4;
+		if (ip->ip_off == 0)
+			ena_tx_ctx->df = 1;
+		break;
+	case ETHERTYPE_IPV6:
+		ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV6;
+
+	default:
+		break;
+	}
+
+	if (ip->ip_p == IPPROTO_TCP) {
+		ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_TCP;
+		if (mbuf->m_pkthdr.csum_flags & (CSUM_IP_TCP | CSUM_IP6_TCP))
+		    ena_tx_ctx->l4_csum_enable = 1;
+		else
+		    ena_tx_ctx->l4_csum_enable = 0;
+	} else if (ip->ip_p == IPPROTO_UDP) {
+		ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UDP;
+		if (mbuf->m_pkthdr.csum_flags & (CSUM_IP_UDP | CSUM_IP6_UDP))
+		    ena_tx_ctx->l4_csum_enable = 1;
+		else
+		    ena_tx_ctx->l4_csum_enable = 0;
+	} else {
+		ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UNKNOWN;
+		ena_tx_ctx->l4_csum_enable = 0;
+	}
+
+	ena_meta->mss = mss;
+	ena_meta->l3_hdr_len = iphlen;
+	ena_meta->l3_hdr_offset = ehdrlen;
+	ena_tx_ctx->meta_valid = 1;
+}
+
+static int
+ena_check_and_collapse_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf)
+{
+	struct ena_adapter *adapter;
+	struct mbuf *collapsed_mbuf;
+	int num_frags;
+
+	adapter = tx_ring->adapter;
+	num_frags = ena_mbuf_count(*mbuf);
+
+	/* One segment must be reserved for configuration descriptor. */
+	if (num_frags < adapter->max_tx_sgl_size)
+		return (0);
+	counter_u64_add(tx_ring->tx_stats.collapse, 1);
+
+	collapsed_mbuf = m_collapse(*mbuf, M_NOWAIT,
+	    adapter->max_tx_sgl_size - 1);
+	if (collapsed_mbuf == NULL) {
+		counter_u64_add(tx_ring->tx_stats.collapse_err, 1);
+		return (ENOMEM);
+	}
+
+	/* If mbuf was collapsed succesfully, original mbuf is released. */
+	*mbuf = collapsed_mbuf;
+
+	return (0);
+}
+
+static int
+ena_xmit_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf)
+{
+	struct ena_adapter *adapter;
+	struct ena_tx_buffer *tx_info;
+	struct ena_com_tx_ctx ena_tx_ctx;
+	struct ena_com_dev *ena_dev;
+	struct ena_com_buf *ena_buf;
+	struct ena_com_io_sq* io_sq;
+	bus_dma_segment_t segs[ENA_BUS_DMA_SEGS];
+	void *push_hdr;
+	uint16_t next_to_use;
+	uint16_t req_id;
+	uint16_t push_len;
+	uint16_t ena_qid;
+	uint32_t len, nsegs, header_len;
+	int i, rc;
+	int nb_hw_desc;
+
+	ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id);
+	adapter = tx_ring->que->adapter;
+	ena_dev = adapter->ena_dev;
+	io_sq = &adapter->ena_dev->io_sq_queues[ena_qid];
+
+	ENA_ASSERT(*mbuf, "mbuf is NULL\n");
+
+	rc = ena_check_and_collapse_mbuf(tx_ring, mbuf);
+	if (rc) {
+		ena_trace(ENA_WARNING,
+		    "Failed to collapse mbuf! err: %d", rc);
+		return (rc);
+	}
+
+	next_to_use = tx_ring->next_to_use;
+	req_id = tx_ring->free_tx_ids[next_to_use];
+	tx_info = &tx_ring->tx_buffer_info[req_id];
+
+	tx_info->mbuf = *mbuf;
+	tx_info->num_of_bufs = 0;
+
+	ena_buf = tx_info->bufs;
+	len = (*mbuf)->m_len;
+
+	ena_trace(ENA_DBG | ENA_TXPTH, "Tx: %d bytes", (*mbuf)->m_pkthdr.len);
+
+	push_len = 0;
+	header_len = min_t(uint32_t, len, tx_ring->tx_max_header_size);
+	push_hdr = NULL;
+
+	rc = bus_dmamap_load_mbuf_sg(adapter->tx_buf_tag, tx_info->map,
+	    *mbuf, segs, &nsegs, BUS_DMA_NOWAIT);
+
+	if (rc || (nsegs == 0)) {
+		ena_trace(ENA_WARNING,
+		    "dmamap load failed! err: %d nsegs: %d", rc, nsegs);
+		counter_u64_add(tx_ring->tx_stats.dma_mapping_err, 1);
+		tx_info->mbuf = NULL;
+		if (rc == ENOMEM)
+			return (ENA_COM_NO_MEM);
+		else
+			return (ENA_COM_INVAL);
+	}
+
+	for (i = 0; i < nsegs; i++) {
+		ena_buf->len = segs[i].ds_len;
+		ena_buf->paddr = segs[i].ds_addr;
+		ena_buf++;
+	}
+	tx_info->num_of_bufs = nsegs;
+
+	memset(&ena_tx_ctx, 0x0, sizeof(struct ena_com_tx_ctx));
+	ena_tx_ctx.ena_bufs = tx_info->bufs;
+	ena_tx_ctx.push_header = push_hdr;
+	ena_tx_ctx.num_bufs = tx_info->num_of_bufs;
+	ena_tx_ctx.req_id = req_id;
+	ena_tx_ctx.header_len = header_len;
+
+	/* Set flags and meta data */
+	ena_tx_csum(&ena_tx_ctx, *mbuf);
+	/* Prepare the packet's descriptors and send them to device */
+	rc = ena_com_prepare_tx(io_sq, &ena_tx_ctx, &nb_hw_desc);
+	if (rc != 0) {
+		ena_trace(ENA_WARNING, "failed to prepare tx bufs\n");
+		counter_enter();
+		counter_u64_add_protected(tx_ring->tx_stats.queue_stop, 1);
+		counter_u64_add_protected(tx_ring->tx_stats.prepare_ctx_err, 1);
+		counter_exit();
+		goto dma_error;
+	}
+
+	counter_enter();
+	counter_u64_add_protected(tx_ring->tx_stats.cnt, 1);
+	counter_u64_add_protected(tx_ring->tx_stats.bytes,  (*mbuf)->m_pkthdr.len);
+	counter_exit();
+
+	tx_info->tx_descs = nb_hw_desc;
+	getbinuptime(&tx_info->timestamp);
+	tx_info->print_once = true;
+
+	tx_ring->next_to_use = ENA_TX_RING_IDX_NEXT(next_to_use,
+	    tx_ring->ring_size);
+
+	bus_dmamap_sync(adapter->tx_buf_tag, tx_info->map, BUS_DMASYNC_PREWRITE);
+
+	return (0);
+
+dma_error:
+	tx_info->mbuf = NULL;
+	bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map);
+
+	return (rc);
+}
+
+static void
+ena_start_xmit(struct ena_ring *tx_ring)
+{
+	struct mbuf *mbuf;
+	struct ena_adapter *adapter = tx_ring->adapter;
+	struct ena_com_io_sq* io_sq;
+	int ena_qid;
+	int acum_pkts = 0;
+	int ret = 0;
+
+	if ((adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+		return;
+
+	if (!adapter->link_status)
+		return;
+
+	ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id);
+	io_sq = &adapter->ena_dev->io_sq_queues[ena_qid];
+
+	while ((mbuf = drbr_peek(adapter->ifp, tx_ring->br)) != NULL) {
+		ena_trace(ENA_DBG | ENA_TXPTH, "\ndequeued mbuf %p with flags %#x and"
+		    " header csum flags %#jx",
+		    mbuf, mbuf->m_flags, mbuf->m_pkthdr.csum_flags);
+
+		if (ena_com_sq_empty_space(io_sq) < ENA_TX_CLEANUP_TRESHOLD)
+			ena_tx_cleanup(tx_ring);
+
+		if ((ret = ena_xmit_mbuf(tx_ring, &mbuf)) != 0) {
+			if (ret == ENA_COM_NO_MEM) {
+				drbr_putback(adapter->ifp, tx_ring->br, mbuf);
+			} else if (ret == ENA_COM_NO_SPACE) {
+				drbr_putback(adapter->ifp, tx_ring->br, mbuf);
+			} else {
+				m_freem(mbuf);
+				drbr_advance(adapter->ifp, tx_ring->br);
+			}
+
+			break;
+		}
+
+		drbr_advance(adapter->ifp, tx_ring->br);
+
+		if ((adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+			return;
+
+		acum_pkts++;
+
+		BPF_MTAP(adapter->ifp, mbuf);
+
+		if (acum_pkts == DB_THRESHOLD) {
+			acum_pkts = 0;
+			wmb();
+			/* Trigger the dma engine */
+			ena_com_write_sq_doorbell(io_sq);
+			counter_u64_add(tx_ring->tx_stats.doorbells, 1);
+		}
+
+	}
+
+	if (acum_pkts) {
+		wmb();
+		/* Trigger the dma engine */
+		ena_com_write_sq_doorbell(io_sq);
+		counter_u64_add(tx_ring->tx_stats.doorbells, 1);
+	}
+
+	if (ena_com_sq_empty_space(io_sq) < ENA_TX_CLEANUP_TRESHOLD)
+		ena_tx_cleanup(tx_ring);
+}
+
+static void
+ena_deferred_mq_start(void *arg, int pending)
+{
+	struct ena_ring *tx_ring = (struct ena_ring *)arg;
+	struct ifnet *ifp = tx_ring->adapter->ifp;
+
+	while (drbr_empty(ifp, tx_ring->br) == FALSE &&
+	    (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
+		ENA_RING_MTX_LOCK(tx_ring);
+		ena_start_xmit(tx_ring);
+		ENA_RING_MTX_UNLOCK(tx_ring);
+	}
+}
+
+static int
+ena_mq_start(if_t ifp, struct mbuf *m)
+{
+	struct ena_adapter *adapter = ifp->if_softc;
+	struct ena_ring *tx_ring;
+	int ret, is_drbr_empty;
+	uint32_t i;
+
+	if ((adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
+		return (ENODEV);
+
+	/* Which queue to use */
+	/*
+	 * If everything is setup correctly, it should be the
+	 * same bucket that the current CPU we're on is.
+	 * It should improve performance.
+	 */
+	if (M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) {
+#ifdef	RSS
+		if (rss_hash2bucket(m->m_pkthdr.flowid,
+		    M_HASHTYPE_GET(m), &i) == 0) {
+			i = i % adapter->num_queues;
+
+		} else
+#endif
+		{
+			i = m->m_pkthdr.flowid % adapter->num_queues;
+		}
+	} else {
+		i = curcpu % adapter->num_queues;
+	}
+	tx_ring = &adapter->tx_ring[i];
+
+	/* Check if drbr is empty before putting packet */
+	is_drbr_empty = drbr_empty(ifp, tx_ring->br);
+	ret = drbr_enqueue(ifp, tx_ring->br, m);
+	if (ret) {
+		taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
+		return (ret);
+	}
+
+	if (is_drbr_empty && ENA_RING_MTX_TRYLOCK(tx_ring)) {
+		ena_start_xmit(tx_ring);
+		ENA_RING_MTX_UNLOCK(tx_ring);
+	} else {
+		taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
+	}
+
+	return (0);
+}
+
+static void
+ena_qflush(if_t ifp)
+{
+	struct ena_adapter *adapter = ifp->if_softc;
+	struct ena_ring *tx_ring = adapter->tx_ring;
+	int i;
+
+	for(i = 0; i < adapter->num_queues; ++i, ++tx_ring)
+		if (drbr_empty(ifp, tx_ring->br) == FALSE) {
+			ENA_RING_MTX_LOCK(tx_ring);
+			drbr_flush(ifp, tx_ring->br);
+			ENA_RING_MTX_UNLOCK(tx_ring);
+		}
+
+	if_qflush(ifp);
+
+	return;
+}
+
+static int ena_calc_io_queue_num(struct ena_adapter *adapter,
+    struct ena_com_dev_get_features_ctx *get_feat_ctx)
+{
+	int io_sq_num, io_cq_num, io_queue_num;
+
+	io_sq_num = get_feat_ctx->max_queues.max_sq_num;
+	io_cq_num = get_feat_ctx->max_queues.max_sq_num;
+
+	io_queue_num = min_t(int, mp_ncpus, ENA_MAX_NUM_IO_QUEUES);
+	io_queue_num = min_t(int, io_queue_num, io_sq_num);
+	io_queue_num = min_t(int, io_queue_num, io_cq_num);
+	/* 1 IRQ for for mgmnt and 1 IRQ for each TX/RX pair */
+	io_queue_num = min_t(int, io_queue_num,
+	    pci_msix_count(adapter->pdev) - 1);
+#ifdef	RSS
+	io_queue_num = min_t(int, io_queue_num, rss_getnumbuckets());
+#endif
+
+	return io_queue_num;
+}
+
+static int ena_calc_queue_size(struct ena_adapter *adapter,
+    uint16_t *max_tx_sgl_size,  uint16_t *max_rx_sgl_size,
+    struct ena_com_dev_get_features_ctx *feat)
+{
+	uint32_t queue_size = ENA_DEFAULT_RING_SIZE;
+	uint32_t v;
+	uint32_t q;
+
+	queue_size = min_t(uint32_t, queue_size,
+	    feat->max_queues.max_cq_depth);
+	queue_size = min_t(uint32_t, queue_size,
+	    feat->max_queues.max_sq_depth);
+
+	/* round down to the nearest power of 2 */
+	v = queue_size;
+	while (v != 0) {
+		if (powerof2(queue_size))
+			break;
+		v /= 2;
+		q = rounddown2(queue_size, v);
+		if (q != 0) {
+			queue_size = q;
+			break;
+		}
+	}
+
+	if (unlikely(!queue_size)) {
+		device_printf(adapter->pdev, "Invalid queue size\n");
+		return ENA_COM_FAULT;
+	}
+
+	*max_tx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS,
+	    feat->max_queues.max_packet_tx_descs);
+	*max_rx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS,
+	    feat->max_queues.max_packet_rx_descs);
+
+	return queue_size;
+}
+
+static int ena_rss_init_default(struct ena_adapter *adapter)
+{
+	struct ena_com_dev *ena_dev = adapter->ena_dev;
+	device_t dev = adapter->pdev;
+	int qid, rc, i;
+
+	rc = ena_com_rss_init(ena_dev, ENA_RX_RSS_TABLE_LOG_SIZE);
+	if (unlikely(rc)) {
+		device_printf(dev, "Cannot init RSS\n");
+		goto err_rss_init;
+	}
+
+	for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
+#ifdef	RSS
+		qid = rss_get_indirection_to_bucket(i);
+		qid = qid % adapter->num_queues;
+#else
+		qid = i % adapter->num_queues;
+#endif
+		rc = ena_com_indirect_table_fill_entry(ena_dev, i,
+						       ENA_IO_RXQ_IDX(qid));
+		if (unlikely(rc && (rc != EPERM))) {
+			device_printf(dev, "Cannot fill indirect table\n");
+			goto err_fill_indir;
+		}
+	}
+
+	rc = ena_com_fill_hash_function(ena_dev, ENA_ADMIN_CRC32, NULL,
+					ENA_HASH_KEY_SIZE, 0xFFFFFFFF);
+	if (unlikely(rc && (rc != EPERM))) {
+		device_printf(dev, "Cannot fill hash function\n");
+		goto err_fill_indir;
+	}
+
+	rc = ena_com_set_default_hash_ctrl(ena_dev);
+	if (unlikely(rc && (rc != EPERM))) {
+		device_printf(dev, "Cannot fill hash control\n");
+		goto err_fill_indir;
+	}
+
+	return (0);
+
+err_fill_indir:
+	ena_com_rss_destroy(ena_dev);
+err_rss_init:
+	return (rc);
+}
+
+static void
+ena_rss_init_default_deferred(void *arg)
+{
+	struct ena_adapter *adapter;
+	devclass_t dc;
+	int max;
+	int rc;
+
+	dc = devclass_find("ena");
+	if (dc == NULL) {
+		ena_trace(ENA_DBG, "No devclass ena\n");
+		return;
+	}
+
+	max = devclass_get_maxunit(dc);
+	while (max-- >= 0) {
+		adapter = devclass_get_softc(dc, max);
+		if (adapter != NULL) {
+			rc = ena_rss_init_default(adapter);
+			adapter->rss_support = true;
+			if (rc) {
+				device_printf(adapter->pdev,
+				    "WARNING: RSS was not properly initialized,"
+				    " it will affect bandwith\n");
+				adapter->rss_support = false;
+			}
+		}
+	}
+}
+SYSINIT(ena_rss_init, SI_SUB_KICK_SCHEDULER, SI_ORDER_SECOND, ena_rss_init_default_deferred, NULL);
+
+static void ena_config_host_info(struct ena_com_dev *ena_dev)
+{
+	struct ena_admin_host_info *host_info;
+	int rc;
+
+	/* Allocate only the host info */
+	rc = ena_com_allocate_host_info(ena_dev);
+	if (rc) {
+		ena_trace(ENA_ALERT, "Cannot allocate host info\n");
+		return;
+	}
+
+	host_info = ena_dev->host_attr.host_info;
+
+	host_info->os_type = ENA_ADMIN_OS_FREEBSD;
+	host_info->kernel_ver = osreldate;
+
+	sprintf(host_info->kernel_ver_str, "%d", osreldate);
+	host_info->os_dist = 0;
+	strncpy(host_info->os_dist_str, osrelease,
+	    sizeof(host_info->os_dist_str) - 1);
+
+	host_info->driver_version =
+		(DRV_MODULE_VER_MAJOR) |
+		(DRV_MODULE_VER_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) |
+		(DRV_MODULE_VER_SUBMINOR << ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT);
+
+	rc = ena_com_set_host_attributes(ena_dev);
+	if (rc) {
+		if (rc == EPERM)
+			ena_trace(ENA_WARNING, "Cannot set host attributes\n");
+		else
+			ena_trace(ENA_ALERT, "Cannot set host attributes\n");
+
+		goto err;
+	}
+
+	return;
+
+err:
+	ena_com_delete_host_info(ena_dev);
+}
+
+static int
+ena_device_init(struct ena_adapter *adapter, device_t pdev,
+	struct ena_com_dev_get_features_ctx *get_feat_ctx, int *wd_active)
+{
+	struct ena_com_dev* ena_dev = adapter->ena_dev;
+	bool readless_supported;
+	uint32_t aenq_groups;
+	int dma_width;
+	int rc;
+
+	rc = ena_com_mmio_reg_read_request_init(ena_dev);
+	if (rc) {
+		device_printf(pdev, "failed to init mmio read less\n");
+		return rc;
+	}
+
+	/*
+	 * The PCIe configuration space revision id indicate if mmio reg
+	 * read is disabled
+	 */
+	readless_supported = !(pci_get_revid(pdev) & ENA_MMIO_DISABLE_REG_READ);
+	ena_com_set_mmio_read_mode(ena_dev, readless_supported);
+
+	rc = ena_com_dev_reset(ena_dev);
+	if (rc) {
+		device_printf(pdev, "Can not reset device\n");
+		goto err_mmio_read_less;
+	}
+
+	rc = ena_com_validate_version(ena_dev);
+	if (rc) {
+		device_printf(pdev, "device version is too low\n");
+		goto err_mmio_read_less;
+	}
+
+	dma_width = ena_com_get_dma_width(ena_dev);
+	if (dma_width < 0) {
+		device_printf(pdev, "Invalid dma width value %d", dma_width);
+		rc = dma_width;
+		goto err_mmio_read_less;
+	}
+	adapter->dma_width = dma_width;
+
+	/* ENA admin level init */
+	rc = ena_com_admin_init(ena_dev, &aenq_handlers, true);
+	if (rc) {
+		device_printf(pdev,
+		    "Can not initialize ena admin queue with device\n");
+		goto err_mmio_read_less;
+	}
+
+	/*
+	 * To enable the msix interrupts the driver needs to know the number
+	 * of queues. So the driver uses polling mode to retrieve this
+	 * information
+	 */
+	ena_com_set_admin_polling_mode(ena_dev, true);
+
+	ena_config_host_info(ena_dev);
+
+	/* Get Device Attributes */
+	rc = ena_com_get_dev_attr_feat(ena_dev, get_feat_ctx);
+	if (rc) {
+		device_printf(pdev,
+		    "Cannot get attribute for ena device rc: %d\n", rc);
+		goto err_admin_init;
+	}
+
+	aenq_groups = BIT(ENA_ADMIN_LINK_CHANGE) |
+	    BIT(ENA_ADMIN_FATAL_ERROR) |
+	    BIT(ENA_ADMIN_WARNING) |
+	    BIT(ENA_ADMIN_NOTIFICATION) |
+	    BIT(ENA_ADMIN_KEEP_ALIVE);
+
+	aenq_groups &= get_feat_ctx->aenq.supported_groups;
+	rc = ena_com_set_aenq_config(ena_dev, aenq_groups);
+	if (rc) {
+		device_printf(pdev, "Cannot configure aenq groups rc: %d\n", rc);
+		goto err_admin_init;
+	}
+
+	*wd_active = !!(aenq_groups & BIT(ENA_ADMIN_KEEP_ALIVE));
+
+	return 0;
+
+err_admin_init:
+	ena_com_delete_host_info(ena_dev);
+	ena_com_admin_destroy(ena_dev);
+err_mmio_read_less:
+	ena_com_mmio_reg_read_request_destroy(ena_dev);
+
+	return rc;
+}
+
+static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *adapter,
+    int io_vectors)
+{
+	struct ena_com_dev *ena_dev = adapter->ena_dev;
+	int rc;
+
+	rc = ena_enable_msix(adapter);
+	if (rc) {
+		device_printf(adapter->pdev, "Error with MSI-X enablement\n");
+		return rc;
+	}
+
+	ena_setup_mgmnt_intr(adapter);
+
+	rc = ena_request_mgmnt_irq(adapter);
+	if (rc) {
+		device_printf(adapter->pdev, "Cannot setup mgmnt queue intr\n");
+		goto err_disable_msix;
+	}
+
+	ena_com_set_admin_polling_mode(ena_dev, false);
+
+	ena_com_admin_aenq_enable(ena_dev);
+
+	return 0;
+
+err_disable_msix:
+	ena_disable_msix(adapter);
+
+	return rc;
+}
+
+/* Function called on ENA_ADMIN_KEEP_ALIVE event */
+static void ena_keep_alive_wd(void *adapter_data,
+    struct ena_admin_aenq_entry *aenq_e)
+{
+	struct ena_adapter *adapter = (struct ena_adapter *)adapter_data;
+	sbintime_t stime;
+
+	stime = getsbinuptime();
+	atomic_store_rel_64(&adapter->keep_alive_timestamp, stime);
+}
+
+/* Check for keep alive expiration */
+static void check_for_missing_keep_alive(struct ena_adapter *adapter)
+{
+	sbintime_t timestamp, time;
+
+	if (adapter->wd_active == 0)
+		return;
+
+	if (adapter->keep_alive_timeout == 0)
+		return;
+
+	timestamp = atomic_load_acq_64(&adapter->keep_alive_timestamp);
+	time = getsbinuptime() - timestamp;
+	if (unlikely(time > adapter->keep_alive_timeout)) {
+		device_printf(adapter->pdev,
+		    "Keep alive watchdog timeout.\n");
+		counter_u64_add(adapter->dev_stats.wd_expired, 1);
+		adapter->trigger_reset = true;
+	}
+}
+
+/* Check if admin queue is enabled */
+static void check_for_admin_com_state(struct ena_adapter *adapter)
+{
+	if (unlikely(!ena_com_get_admin_running_state(adapter->ena_dev))) {
+		device_printf(adapter->pdev,
+		    "ENA admin queue is not in running state!\n");
+		counter_u64_add(adapter->dev_stats.admin_q_pause, 1);
+		adapter->trigger_reset = true;
+	}
+}
+
+/*
+ * Check for TX which were not completed on time.
+ * Timeout is defined by "missing_tx_timeout".
+ * Reset will be performed if number of incompleted
+ * transactions exceeds "missing_tx_threshold".
+ */
+static void check_for_missing_tx_completions(struct ena_adapter *adapter)
+{
+	struct ena_ring *tx_ring;
+	struct ena_tx_buffer *tx_info;
+	struct bintime curtime, time;
+	int i, j, budget, missed_tx;
+
+	/* Make sure the driver doesn't turn the device in other process */
+	rmb();
+
+	if (!adapter->up)
+		return;
+
+	if (adapter->trigger_reset)
+		return;
+
+	if (adapter->missing_tx_timeout == 0)
+		return;
+
+	budget = adapter->missing_tx_max_queues;
+	getbinuptime(&curtime);
+
+	for (i = adapter->next_monitored_tx_qid; i < adapter->num_queues; i++) {
+		tx_ring = &adapter->tx_ring[i];
+
+		missed_tx = 0;
+
+		for (j = 0; j < tx_ring->ring_size; j++) {
+			tx_info = &tx_ring->tx_buffer_info[j];
+
+			if (!bintime_isset(&tx_info->timestamp))
+				continue;
+
+			time = curtime;
+			bintime_sub(&time, &tx_info->timestamp);
+
+			/* Check again if packet is still waiting */
+			if (bintime_isset(&tx_info->timestamp) && unlikely(
+			    bttosbt(time) > adapter->missing_tx_timeout)) {
+				if (tx_info->print_once)
+					device_printf(adapter->pdev,
+					    "Found a Tx that wasn't completed "
+					    "on time, qid %d, index %d.\n",
+					    tx_ring->qid, j);
+
+				tx_info->print_once = false;
+				missed_tx++;
+
+				if (unlikely(missed_tx >
+				    adapter->missing_tx_threshold)) {
+					device_printf(adapter->pdev,
+					    "The number of lost tx completion "
+					    "is above the threshold (%d > %d). "
+					    "Reset the device\n", missed_tx,
+					    adapter->missing_tx_threshold);
+					adapter->trigger_reset = true;
+					return;
+				}
+			}
+		}
+
+		budget--;
+		if (!budget) {
+			i++;
+			break;
+		}
+	}
+
+	adapter->next_monitored_tx_qid = i % adapter->num_queues;
+}
+
+
+static void
+ena_timer_service(void *data)
+{
+	struct ena_adapter *adapter = (struct ena_adapter *)data;
+	struct ena_admin_host_info *host_info =
+	    adapter->ena_dev->host_attr.host_info;
+
+	check_for_missing_keep_alive(adapter);
+
+	check_for_admin_com_state(adapter);
+
+	check_for_missing_tx_completions(adapter);
+
+	if (host_info)
+		ena_update_host_info(host_info, adapter->ifp);
+
+	if (unlikely(adapter->trigger_reset)) {
+		device_printf(adapter->pdev, "Trigger reset is on\n");
+		taskqueue_enqueue(adapter->reset_tq, &adapter->reset_task);
+		return;
+	}
+
+	/*
+	 * Schedule another timeout one second from now.
+	 */
+	callout_schedule_sbt(&adapter->timer_service, SBT_1S, SBT_1S, 0);
+}
+
+static void
+ena_reset_task(void *arg, int pending)
+{
+	struct ena_com_dev_get_features_ctx get_feat_ctx;
+	struct ena_adapter *adapter = (struct ena_adapter *)arg;
+	struct ena_com_dev *ena_dev = adapter->ena_dev;
+	bool dev_up;
+	int rc;
+
+	if (unlikely(!adapter->trigger_reset)) {
+		device_printf(adapter->pdev,
+		    "device reset scheduled but trigger_reset is off\n");
+		return;
+	}
+
+	sx_xlock(&adapter->ioctl_sx);
+
+	callout_drain(&adapter->timer_service);
+
+	dev_up = adapter->up;
+
+	ena_com_set_admin_running_state(ena_dev, false);
+	ena_free_mgmnt_irq(adapter);
+	ena_down(adapter);
+	ena_com_dev_reset(ena_dev);
+	ena_disable_msix(adapter);
+	ena_com_abort_admin_commands(ena_dev);
+	ena_com_wait_for_abort_completion(ena_dev);
+	ena_com_admin_destroy(ena_dev);
+	ena_com_mmio_reg_read_request_destroy(ena_dev);
+
+	adapter->trigger_reset = false;
+
+	/* Finished destroy part. Restart the device */
+	rc = ena_device_init(adapter, adapter->pdev, &get_feat_ctx,
+	    &adapter->wd_active);
+	if (rc) {
+		device_printf(adapter->pdev,
+		    "ENA device init failed! (err: %d)\n", rc);
+		goto err_dev_free;
+	}
+
+	rc = ena_enable_msix_and_set_admin_interrupts(adapter,
+	    adapter->num_queues);
+	if (rc) {
+		device_printf(adapter->pdev, "Enable MSI-X failed\n");
+		goto err_com_free;
+	}
+
+	/* If the interface was up before the reset bring it up */
+	if (dev_up) {
+		rc = ena_up(adapter);
+		if (rc) {
+			device_printf(adapter->pdev,
+			    "Failed to create I/O queues\n");
+			goto err_msix_free;
+		}
+	}
+
+	callout_reset_sbt(&adapter->timer_service, SBT_1S, SBT_1S,
+	    ena_timer_service, (void *)adapter, 0);
+
+	sx_unlock(&adapter->ioctl_sx);
+
+	return;
+
+err_msix_free:
+	ena_com_dev_reset(ena_dev);
+	ena_free_mgmnt_irq(adapter);
+	ena_disable_msix(adapter);
+err_com_free:
+	ena_com_admin_destroy(ena_dev);
+err_dev_free:
+	device_printf(adapter->pdev, "ENA reset failed!\n");
+	adapter->running = false;
+	sx_unlock(&adapter->ioctl_sx);
+}
+
+/**
+ * ena_attach - Device Initialization Routine
+ * @pdev: device information struct
+ *
+ * Returns 0 on success, otherwise on failure.
+ *
+ * ena_attach initializes an adapter identified by a device structure.
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur.
+ **/
+static int
+ena_attach(device_t pdev)
+{
+	struct ena_com_dev_get_features_ctx get_feat_ctx;
+	static int version_printed;
+	struct ena_adapter *adapter;
+	struct ena_com_dev *ena_dev = NULL;
+	uint16_t tx_sgl_size = 0;
+	uint16_t rx_sgl_size = 0;
+	int io_queue_num;
+	int queue_size;
+	int rc;
+	struct sysctl_ctx_list *ctx;
+	struct sysctl_oid_list *children;
+
+	adapter = device_get_softc(pdev);
+	adapter->pdev = pdev;
+	ctx = device_get_sysctl_ctx(pdev);
+	children = SYSCTL_CHILDREN(device_get_sysctl_tree(pdev));
+
+	mtx_init(&adapter->global_mtx, "ENA global mtx", NULL, MTX_DEF);
+	sx_init(&adapter->ioctl_sx, "ENA ioctl sx");
+
+	/* Sysctl calls for Watchdog service */
+	SYSCTL_ADD_INT(ctx, children, OID_AUTO, "wd_active",
+	    CTLFLAG_RWTUN, &adapter->wd_active, 0,
+	    "Watchdog is active");
+
+	SYSCTL_ADD_QUAD(ctx, children, OID_AUTO, "keep_alive_timeout",
+	    CTLFLAG_RWTUN, &adapter->keep_alive_timeout,
+	    "Timeout for Keep Alive messages");
+
+	SYSCTL_ADD_QUAD(ctx, children, OID_AUTO, "missing_tx_timeout",
+	    CTLFLAG_RWTUN, &adapter->missing_tx_timeout,
+	    "Timeout for TX completion");
+
+	SYSCTL_ADD_U32(ctx, children, OID_AUTO, "missing_tx_max_queues",
+	    CTLFLAG_RWTUN, &adapter->missing_tx_max_queues, 0,
+	    "Number of TX queues to check per run");
+
+	SYSCTL_ADD_U32(ctx, children, OID_AUTO, "missing_tx_threshold",
+	    CTLFLAG_RWTUN, &adapter->missing_tx_threshold, 0,
+	    "Max number of timeouted packets");
+
+	/* Set up the timer service */
+	callout_init_mtx(&adapter->timer_service, &adapter->global_mtx, 0);
+	adapter->keep_alive_timeout = DEFAULT_KEEP_ALIVE_TO;
+	adapter->missing_tx_timeout = DEFAULT_TX_CMP_TO;
+	adapter->missing_tx_max_queues = DEFAULT_TX_MONITORED_QUEUES;
+	adapter->missing_tx_threshold = DEFAULT_TX_CMP_THRESHOLD;
+
+	if (version_printed++ == 0)
+		device_printf(pdev, "%s\n", ena_version);
+
+	rc = ena_allocate_pci_resources(adapter);
+	if (rc) {
+		device_printf(pdev, "PCI resource allocation failed!\n");
+		ena_free_pci_resources(adapter);
+		goto err_pci_res;
+	}
+
+	/* Allocate memory for ena_dev structure */
+	ena_dev = ENA_MEM_ALLOC(pdev, sizeof(struct ena_com_dev));
+	if (!ena_dev) {
+		device_printf(pdev, "allocating ena_dev failed\n");
+		rc = ENOMEM;
+		goto err_select_region;
+	}
+
+	adapter->ena_dev = ena_dev;
+	ena_dev->dmadev = pdev;
+	ena_dev->bus = malloc(sizeof(struct ena_bus), M_DEVBUF,
+	    M_WAITOK | M_ZERO);
+
+	/* Store register resources */
+	((struct ena_bus*)(ena_dev->bus))->reg_bar_t =
+	    rman_get_bustag(adapter->registers);
+	((struct ena_bus*)(ena_dev->bus))->reg_bar_h =
+	    rman_get_bushandle(adapter->registers);
+
+	if (((struct ena_bus*)(ena_dev->bus))->reg_bar_h == 0) {
+		device_printf(pdev, "failed to pmap registers bar\n");
+		rc = ENXIO;
+		goto err_dev_free;
+	}
+
+	ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
+
+	/* Device initialization */
+	rc = ena_device_init(adapter, pdev, &get_feat_ctx, &adapter->wd_active);
+	if (rc) {
+		device_printf(pdev, "ENA device init failed! (err: %d)\n", rc);
+		rc = ENXIO;
+		goto err_bus_free;
+	}
+
+	adapter->keep_alive_timestamp = getsbinuptime();
+
+	adapter->tx_offload_cap = get_feat_ctx.offload.tx;
+
+	/* Set for sure that interface is not up */
+	adapter->up = false;
+
+	memcpy(adapter->mac_addr, get_feat_ctx.dev_attr.mac_addr,
+	    ETHER_ADDR_LEN);
+
+	adapter->small_copy_len =
+	    ENA_DEFAULT_SMALL_PACKET_LEN;
+
+	/* calculate IO queue number to create */
+	io_queue_num = ena_calc_io_queue_num(adapter, &get_feat_ctx);
+
+	ENA_ASSERT(io_queue_num > 0, "Invalid queue number: %d\n",
+	    io_queue_num);
+	adapter->num_queues = io_queue_num;
+
+	/* calculatre ring sizes */
+	queue_size = ena_calc_queue_size(adapter,&tx_sgl_size,
+	    &rx_sgl_size, &get_feat_ctx);
+	if ((queue_size <= 0) || (io_queue_num <= 0)) {
+		rc = ENA_COM_FAULT;
+		goto err_com_free;
+	}
+
+	adapter->tx_ring_size = queue_size;
+	adapter->rx_ring_size = queue_size;
+
+	adapter->max_tx_sgl_size = tx_sgl_size;
+	adapter->max_rx_sgl_size = rx_sgl_size;
+
+	/* set up dma tags for rx and tx buffers */
+	rc = ena_setup_tx_dma_tag(adapter);
+	if (rc)
+		goto dma_tx_err;
+
+	rc = ena_setup_rx_dma_tag(adapter);
+	if (rc)
+		goto dma_rx_err;
+
+	/* initialize rings basic information */
+	device_printf(pdev, "initalize %d io queues\n", io_queue_num);
+	rc = ena_init_io_rings(adapter);
+	if (rc) {
+		device_printf(pdev,"Error with initialization of IO rings\n");
+		goto err_io_init;
+	}
+
+	/* setup network interface */
+	rc = ena_setup_ifnet(pdev, adapter, &get_feat_ctx);
+	if (rc) {
+		device_printf(pdev,"Error with network interface setup\n");
+		goto err_com_free;
+	}
+
+	rc = ena_enable_msix_and_set_admin_interrupts(adapter, io_queue_num);
+	if (rc) {
+		device_printf(pdev,
+		    "Failed to enable and set the admin interrupts\n");
+		goto err_ifp_free;
+	}
+
+	/* Initialize reset task queue */
+	TASK_INIT(&adapter->reset_task, 0, ena_reset_task, adapter);
+	adapter->reset_tq = taskqueue_create("ena_reset_enqueue",
+	    M_WAITOK | M_ZERO, taskqueue_thread_enqueue, &adapter->reset_tq);
+	if (adapter->reset_tq == NULL) {
+		device_printf(adapter->pdev,
+		    "Unable to create reset task queue\n");
+		goto err_reset_tq;
+	}
+	taskqueue_start_threads(&adapter->reset_tq, 1, PI_NET,
+	    "%s rstq", device_get_nameunit(adapter->pdev));
+
+	/* Initialize task queue responsible for updating hw stats */
+	TASK_INIT(&adapter->stats_task, 0, ena_update_hw_stats, adapter);
+	adapter->stats_tq = taskqueue_create_fast("ena_stats_update",
+	    M_WAITOK | M_ZERO, taskqueue_thread_enqueue, &adapter->stats_tq);
+	if (adapter->stats_tq == NULL) {
+		device_printf(adapter->pdev,
+		    "Unable to create taskqueue for updating hw stats\n");
+		goto err_stats_tq;
+	}
+	taskqueue_start_threads(&adapter->stats_tq, 1, PI_REALTIME,
+	    "%s stats tq", device_get_nameunit(adapter->pdev));
+
+	/* Initialize statistics */
+	ena_alloc_counters((counter_u64_t *)&adapter->dev_stats,
+	    sizeof(struct ena_stats_dev));
+	ena_update_stats_counters(adapter);
+	ena_sysctl_add_nodes(adapter);
+
+	/* Tell the stack that the interface is not active */
+	if_setdrvflagbits(adapter->ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING);
+
+	adapter->running = true;
+	return (0);
+
+err_stats_tq:
+	taskqueue_free(adapter->reset_tq);
+err_reset_tq:
+	ena_free_mgmnt_irq(adapter);
+	ena_disable_msix(adapter);
+err_ifp_free:
+	if_detach(adapter->ifp);
+	if_free(adapter->ifp);
+err_com_free:
+	ena_free_all_io_rings_resources(adapter);
+err_io_init:
+	ena_free_rx_dma_tag(adapter);
+dma_rx_err:
+	ena_free_tx_dma_tag(adapter);
+dma_tx_err:
+	ena_com_admin_destroy(ena_dev);
+	ena_com_delete_host_info(ena_dev);
+err_bus_free:
+	free(ena_dev->bus, M_DEVBUF);
+err_dev_free:
+	free(ena_dev, M_DEVBUF);
+err_select_region:
+	ena_free_pci_resources(adapter);
+err_pci_res:
+	return (rc);
+}
+
+/**
+ * ena_detach - Device Removal Routine
+ * @pdev: device information struct
+ *
+ * ena_detach is called by the device subsystem to alert the driver
+ * that it should release a PCI device.
+ **/
+static int
+ena_detach(device_t pdev)
+{
+	struct ena_adapter *adapter = device_get_softc(pdev);
+	struct ena_com_dev *ena_dev = adapter->ena_dev;
+	int rc;
+
+	/* Make sure VLANS are not using driver */
+	if (adapter->ifp->if_vlantrunk != NULL) {
+		device_printf(adapter->pdev ,"VLAN is in use, detach first\n");
+		return (EBUSY);
+	}
+
+	/* Free reset task and callout */
+	callout_drain(&adapter->timer_service);
+	while (taskqueue_cancel(adapter->reset_tq, &adapter->reset_task, NULL))
+		taskqueue_drain(adapter->reset_tq, &adapter->reset_task);
+	taskqueue_free(adapter->reset_tq);
+
+	sx_xlock(&adapter->ioctl_sx);
+	ena_down(adapter);
+	sx_unlock(&adapter->ioctl_sx);
+
+	taskqueue_free(adapter->stats_tq);
+
+	if (adapter->ifp != NULL) {
+		ether_ifdetach(adapter->ifp);
+		if_free(adapter->ifp);
+	}
+
+	ena_free_all_io_rings_resources(adapter);
+
+	ena_free_counters((counter_u64_t *)&adapter->dev_stats,
+	    sizeof(struct ena_stats_dev));
+
+	if (adapter->rss_support)
+		ena_com_rss_destroy(ena_dev);
+
+	rc = ena_free_rx_dma_tag(adapter);
+	if (rc)
+		device_printf(adapter->pdev,
+		    "Unmapped RX DMA tag associations\n");
+
+	rc = ena_free_tx_dma_tag(adapter);
+	if (rc)
+		device_printf(adapter->pdev,
+		    "Unmapped TX DMA tag associations\n");
+
+	/* Reset the device only if the device is running. */
+	if (adapter->running)
+		ena_com_dev_reset(ena_dev);
+
+	ena_com_delete_host_info(ena_dev);
+
+	ena_com_admin_destroy(ena_dev);
+
+	ena_free_irqs(adapter);
+
+	ena_com_mmio_reg_read_request_destroy(ena_dev);
+
+	ena_free_pci_resources(adapter);
+
+	mtx_destroy(&adapter->global_mtx);
+	sx_destroy(&adapter->ioctl_sx);
+
+	if (ena_dev->bus != NULL)
+		free(ena_dev->bus, M_DEVBUF);
+
+	if (ena_dev != NULL)
+		free(ena_dev, M_DEVBUF);
+
+	return (bus_generic_detach(pdev));
+}
+
+/******************************************************************************
+ ******************************** AENQ Handlers *******************************
+ *****************************************************************************/
+/**
+ * ena_update_on_link_change:
+ * Notify the network interface about the change in link status
+ **/
+static void
+ena_update_on_link_change(void *adapter_data,
+    struct ena_admin_aenq_entry *aenq_e)
+{
+	struct ena_adapter *adapter = (struct ena_adapter *)adapter_data;
+	struct ena_admin_aenq_link_change_desc *aenq_desc;
+	int status;
+	if_t ifp;
+
+	aenq_desc = (struct ena_admin_aenq_link_change_desc *)aenq_e;
+	ifp = adapter->ifp;
+	status = aenq_desc->flags &
+	    ENA_ADMIN_AENQ_LINK_CHANGE_DESC_LINK_STATUS_MASK;
+
+	if (status != 0) {
+		device_printf(adapter->pdev, "link is UP\n");
+		if_link_state_change(ifp, LINK_STATE_UP);
+	} else if (status == 0) {
+		device_printf(adapter->pdev, "link is DOWN\n");
+		if_link_state_change(ifp, LINK_STATE_DOWN);
+	} else {
+		device_printf(adapter->pdev, "invalid value recvd\n");
+		BUG();
+	}
+
+	adapter->link_status = status;
+
+	return;
+}
+
+/**
+ * This handler will called for unknown event group or unimplemented handlers
+ **/
+static void
+unimplemented_aenq_handler(void *data,
+    struct ena_admin_aenq_entry *aenq_e)
+{
+	return;
+}
+
+static struct ena_aenq_handlers aenq_handlers = {
+    .handlers = {
+	    [ENA_ADMIN_LINK_CHANGE] = ena_update_on_link_change,
+	    [ENA_ADMIN_KEEP_ALIVE] = ena_keep_alive_wd,
+    },
+    .unimplemented_handler = unimplemented_aenq_handler
+};
+
+/*********************************************************************
+ *  FreeBSD Device Interface Entry Points
+ *********************************************************************/
+
+static device_method_t ena_methods[] = {
+    /* Device interface */
+    DEVMETHOD(device_probe, ena_probe),
+    DEVMETHOD(device_attach, ena_attach),
+    DEVMETHOD(device_detach, ena_detach),
+    DEVMETHOD_END
+};
+
+static driver_t ena_driver = {
+    "ena", ena_methods, sizeof(struct ena_adapter),
+};
+
+devclass_t ena_devclass;
+DRIVER_MODULE(ena, pci, ena_driver, ena_devclass, 0, 0);
+MODULE_DEPEND(ena, pci, 1, 1, 1);
+MODULE_DEPEND(ena, ether, 1, 1, 1);
+
+/*********************************************************************/
diff --git a/sys/dev/ena/ena.h b/sys/dev/ena/ena.h
new file mode 100644
index 0000000..22701d8
--- /dev/null
+++ b/sys/dev/ena/ena.h
@@ -0,0 +1,440 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * 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.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ *
+ */
+
+#ifndef ENA_H
+#define ENA_H
+
+#include <sys/types.h>
+
+#include "ena-com/ena_com.h"
+#include "ena-com/ena_eth_com.h"
+
+#define DRV_MODULE_VER_MAJOR	0
+#define DRV_MODULE_VER_MINOR	7
+#define DRV_MODULE_VER_SUBMINOR 0
+
+#define DRV_MODULE_NAME		"ena"
+
+#ifndef DRV_MODULE_VERSION
+#define DRV_MODULE_VERSION				\
+	__XSTRING(DRV_MODULE_VER_MAJOR) "."		\
+	__XSTRING(DRV_MODULE_VER_MINOR) "."		\
+	__XSTRING(DRV_MODULE_VER_SUBMINOR)
+#endif
+#define DEVICE_NAME	"Elastic Network Adapter (ENA)"
+#define DEVICE_DESC	"ENA adapter"
+
+/* Calculate DMA mask - width for ena cannot exceed 48, so it is safe */
+#define ENA_DMA_BIT_MASK(x)		((1ULL << (x)) - 1ULL)
+
+/* 1 for AENQ + ADMIN */
+#define	ENA_MAX_MSIX_VEC(io_queues)	(1 + (io_queues))
+
+#define	ENA_REG_BAR			0
+#define	ENA_MEM_BAR			2
+
+#define	ENA_BUS_DMA_SEGS		32
+
+#define	ENA_DEFAULT_RING_SIZE		1024
+#define	ENA_DEFAULT_SMALL_PACKET_LEN	128
+#define	ENA_DEFAULT_MAX_RX_BUFF_ALLOC_SIZE	1536
+
+#define	ENA_RX_REFILL_THRESH_DEVIDER	8
+
+#define	ENA_MAX_PUSH_PKT_SIZE		128
+
+#define	ENA_NAME_MAX_LEN		20
+#define	ENA_IRQNAME_SIZE		40
+
+#define	ENA_PKT_MAX_BUFS		19
+#define	ENA_STALL_TIMEOUT		100
+
+#define	ENA_RX_RSS_TABLE_LOG_SIZE	7
+#define	ENA_RX_RSS_TABLE_SIZE		(1 << ENA_RX_RSS_TABLE_LOG_SIZE)
+
+#define	ENA_HASH_KEY_SIZE		40
+
+#define	ENA_DMA_BITS_MASK		40
+#define	ENA_MAX_FRAME_LEN		10000
+#define	ENA_MIN_FRAME_LEN		60
+#define	ENA_RX_HASH_KEY_NUM		10
+#define	ENA_RX_THASH_TABLE_SIZE		(1 << 8)
+
+#define ENA_TX_CLEANUP_TRESHOLD		128
+
+#define DB_THRESHOLD	64
+
+#define TX_COMMIT	32
+ /*
+ * TX budget for cleaning. It should be half of the RX budget to reduce amount
+ *  of TCP retransmissions.
+ */
+#define TX_BUDGET	128
+/* RX cleanup budget. -1 stands for infinity. */
+#define RX_BUDGET	256
+/*
+ * How many times we can repeat cleanup in the io irq handling routine if the
+ * RX or TX budget was depleted.
+ */
+#define CLEAN_BUDGET	8
+
+#define RX_IRQ_INTERVAL 20
+#define TX_IRQ_INTERVAL 50
+
+#define	ENA_MAX_MTU		9216
+#define	ENA_TSO_MAXSIZE		65536
+#define	ENA_TSO_NSEGS		ENA_PKT_MAX_BUFS
+#define	ENA_RX_OFFSET		NET_SKB_PAD + NET_IP_ALIGN
+
+#define	ENA_MMIO_DISABLE_REG_READ	BIT(0)
+
+#define	ENA_TX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1))
+
+#define	ENA_RX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1))
+#define	ENA_RX_RING_IDX_ADD(idx, n, ring_size)	\
+	(((idx) + (n)) & ((ring_size) - 1))
+
+#define	ENA_IO_TXQ_IDX(q)		(2 * (q))
+#define	ENA_IO_RXQ_IDX(q)		(2 * (q) + 1)
+
+#define	ENA_MGMNT_IRQ_IDX		0
+#define	ENA_IO_IRQ_FIRST_IDX		1
+#define	ENA_IO_IRQ_IDX(q)		(ENA_IO_IRQ_FIRST_IDX + (q))
+
+/*
+ * ENA device should send keep alive msg every 1 sec.
+ * We wait for 6 sec just to be on the safe side.
+ */
+#define DEFAULT_KEEP_ALIVE_TO		(SBT_1S * 6)
+
+/* Time in jiffies before concluding the transmitter is hung. */
+#define DEFAULT_TX_CMP_TO		(SBT_1S * 5)
+
+/* Number of queues to check for missing queues per timer tick */
+#define DEFAULT_TX_MONITORED_QUEUES	(4)
+
+/* Max number of timeouted packets before device reset */
+#define DEFAULT_TX_CMP_THRESHOLD	(128)
+
+/*
+ * Supported PCI vendor and devices IDs
+ */
+#define	PCI_VENDOR_ID_AMAZON	0x1d0f
+
+#define	PCI_DEV_ID_ENA_PF	0x0ec2
+#define	PCI_DEV_ID_ENA_LLQ_PF	0x1ec2
+#define	PCI_DEV_ID_ENA_VF	0xec20
+#define	PCI_DEV_ID_ENA_LLQ_VF	0xec21
+
+struct msix_entry {
+	int entry;
+	int vector;
+};
+
+typedef struct _ena_vendor_info_t {
+	unsigned int vendor_id;
+	unsigned int device_id;
+	unsigned int index;
+} ena_vendor_info_t;
+
+struct ena_irq {
+	/* Interrupt resources */
+	struct resource *res;
+	driver_intr_t *handler;
+	void *data;
+	void *cookie;
+	unsigned int vector;
+	bool requested;
+	int cpu;
+	char name[ENA_IRQNAME_SIZE];
+};
+
+struct ena_que {
+	struct ena_adapter *adapter;
+	struct ena_ring *tx_ring;
+	struct ena_ring *rx_ring;
+	uint32_t id;
+	int cpu;
+};
+
+struct ena_tx_buffer {
+	struct mbuf *mbuf;
+	/* # of ena desc for this specific mbuf
+	 * (includes data desc and metadata desc) */
+	unsigned int tx_descs;
+	/* # of buffers used by this mbuf */
+	unsigned int num_of_bufs;
+	bus_dmamap_t map;
+
+	/* Used to detect missing tx packets */
+	struct bintime timestamp;
+	bool print_once;
+
+	struct ena_com_buf bufs[ENA_PKT_MAX_BUFS];
+} __aligned(CACHE_LINE_SIZE);
+
+struct ena_rx_buffer {
+	struct mbuf *mbuf;
+	bus_dmamap_t map;
+	struct ena_com_buf ena_buf;
+} __aligned(CACHE_LINE_SIZE);
+
+
+struct ena_stats_tx {
+	counter_u64_t cnt;
+	counter_u64_t bytes;
+	counter_u64_t queue_stop;
+	counter_u64_t prepare_ctx_err;
+	counter_u64_t queue_wakeup;
+	counter_u64_t dma_mapping_err;
+	/* Not counted */
+	counter_u64_t unsupported_desc_num;
+	/* Not counted */
+	counter_u64_t napi_comp;
+	/* Not counted */
+	counter_u64_t tx_poll;
+	counter_u64_t doorbells;
+	counter_u64_t missing_tx_comp;
+	counter_u64_t bad_req_id;
+	counter_u64_t collapse;
+	counter_u64_t collapse_err;
+};
+
+struct ena_stats_rx {
+	counter_u64_t cnt;
+	counter_u64_t bytes;
+	counter_u64_t refil_partial;
+	counter_u64_t bad_csum;
+	/* Not counted */
+	counter_u64_t page_alloc_fail;
+	counter_u64_t mbuf_alloc_fail;
+	counter_u64_t dma_mapping_err;
+	counter_u64_t bad_desc_num;
+	/* Not counted */
+	counter_u64_t small_copy_len_pkt;
+};
+
+
+struct ena_ring {
+	/* Holds the empty requests for TX out of order completions */
+	uint16_t *free_tx_ids;
+	struct ena_com_dev *ena_dev;
+	struct ena_adapter *adapter;
+	struct ena_com_io_cq *ena_com_io_cq;
+	struct ena_com_io_sq *ena_com_io_sq;
+
+	/* The maximum length the driver can push to the device (For LLQ) */
+	enum ena_admin_placement_policy_type tx_mem_queue_type;
+	uint16_t rx_small_copy_len;
+	uint16_t qid;
+	uint16_t mtu;
+	uint8_t tx_max_header_size;
+
+	struct ena_com_rx_buf_info ena_bufs[ENA_PKT_MAX_BUFS];
+	uint32_t  smoothed_interval;
+	enum ena_intr_moder_level moder_tbl_idx;
+
+	struct ena_que *que;
+	struct lro_ctrl lro;
+
+	uint16_t next_to_use;
+	uint16_t next_to_clean;
+
+	union {
+		struct ena_tx_buffer *tx_buffer_info; /* contex of tx packet */
+		struct ena_rx_buffer *rx_buffer_info; /* contex of rx packet */
+	};
+	int ring_size; /* number of tx/rx_buffer_info's entries */
+
+	struct buf_ring *br; /* only for TX */
+	struct mtx ring_mtx;
+	char mtx_name[16];
+	struct task enqueue_task;
+	struct taskqueue *enqueue_tq;
+	struct task cmpl_task;
+	struct taskqueue *cmpl_tq;
+
+	union {
+		struct ena_stats_tx tx_stats;
+		struct ena_stats_rx rx_stats;
+	};
+
+} __aligned(CACHE_LINE_SIZE);
+
+struct ena_stats_dev {
+	/* Not counted */
+	counter_u64_t tx_timeout;
+	/* Not counted */
+	counter_u64_t io_suspend;
+	/* Not counted */
+	counter_u64_t io_resume;
+	/* Not counted */
+	counter_u64_t wd_expired;
+	counter_u64_t interface_up;
+	counter_u64_t interface_down;
+	/* Not counted */
+	counter_u64_t admin_q_pause;
+};
+
+struct ena_hw_stats {
+	uint64_t rx_packets;
+	uint64_t tx_packets;
+
+	uint64_t rx_bytes;
+	uint64_t tx_bytes;
+
+	uint64_t rx_drops;
+};
+
+/* Board specific private data structure */
+struct ena_adapter {
+	struct ena_com_dev *ena_dev;
+
+	/* OS defined structs */
+	if_t ifp;
+	device_t pdev;
+	struct ifmedia	media;
+
+	/* OS resources */
+	struct resource * memory;
+	struct resource * registers;
+
+	struct mtx global_mtx;
+	struct sx ioctl_sx;
+
+	/* MSI-X */
+	uint32_t msix_enabled;
+	struct msix_entry *msix_entries;
+	int msix_vecs;
+
+	/* DMA tags used throughout the driver adapter for Tx and Rx */
+	bus_dma_tag_t tx_buf_tag;
+	bus_dma_tag_t rx_buf_tag;
+	int dma_width;
+	/*
+	 * RX packets that shorter that this len will be copied to the skb
+	 * header
+	 */
+	unsigned int small_copy_len;
+
+	uint16_t max_tx_sgl_size;
+	uint16_t max_rx_sgl_size;
+
+	uint32_t tx_offload_cap;
+
+	/* Tx fast path data */
+	int num_queues;
+
+	unsigned int tx_usecs, rx_usecs; /* Interrupt coalescing */
+
+	unsigned int tx_ring_size;
+	unsigned int rx_ring_size;
+
+	/* RSS*/
+	uint8_t	 rss_ind_tbl[ENA_RX_RSS_TABLE_SIZE];
+	bool rss_support;
+
+	uint32_t msg_enable;
+
+	uint8_t mac_addr[ETHER_ADDR_LEN];
+	/* mdio and phy*/
+
+	char name[ENA_NAME_MAX_LEN];
+	bool link_status;
+	bool trigger_reset;
+	bool up;
+	bool running;
+
+	uint32_t wol;
+
+	/* Queue will represent one TX and one RX ring */
+	struct ena_que que[ENA_MAX_NUM_IO_QUEUES]
+	    __aligned(CACHE_LINE_SIZE);
+
+	/* TX */
+	struct ena_ring tx_ring[ENA_MAX_NUM_IO_QUEUES]
+	    __aligned(CACHE_LINE_SIZE);
+
+	/* RX */
+	struct ena_ring rx_ring[ENA_MAX_NUM_IO_QUEUES]
+	    __aligned(CACHE_LINE_SIZE);
+
+	struct ena_irq irq_tbl[ENA_MAX_MSIX_VEC(ENA_MAX_NUM_IO_QUEUES)];
+
+	/* Timer service */
+	struct callout timer_service;
+	sbintime_t keep_alive_timestamp;
+	uint32_t next_monitored_tx_qid;
+	struct task reset_task;
+	struct taskqueue *reset_tq;
+	int wd_active;
+	sbintime_t keep_alive_timeout;
+	sbintime_t missing_tx_timeout;
+	uint32_t missing_tx_max_queues;
+	uint32_t missing_tx_threshold;
+
+	/* Task updating hw stats */
+	struct task stats_task;
+	struct taskqueue *stats_tq;
+
+	/* Statistics */
+	struct ena_stats_dev dev_stats;
+	struct ena_hw_stats hw_stats;
+};
+
+
+#define	ENA_DEV_LOCK			mtx_lock(&adapter->global_mtx)
+#define	ENA_DEV_UNLOCK			mtx_unlock(&adapter->global_mtx)
+
+#define	ENA_RING_MTX_LOCK(_ring)		mtx_lock(&(_ring)->ring_mtx)
+#define	ENA_RING_MTX_TRYLOCK(_ring)		mtx_trylock(&(_ring)->ring_mtx)
+#define	ENA_RING_MTX_UNLOCK(_ring)		mtx_unlock(&(_ring)->ring_mtx)
+
+struct ena_dev *ena_efa_enadev_get(device_t pdev);
+
+int ena_register_adapter(struct ena_adapter *adapter);
+void ena_unregister_adapter(struct ena_adapter *adapter);
+
+int ena_update_stats_counters(struct ena_adapter *adapter);
+
+static inline int ena_mbuf_count(struct mbuf *mbuf)
+{
+	int count = 1;
+
+	while ((mbuf = mbuf->m_next) != NULL)
+		++count;
+
+	return count;
+}
+
+#endif /* !(ENA_H) */
diff --git a/sys/dev/ena/ena_sysctl.c b/sys/dev/ena/ena_sysctl.c
new file mode 100644
index 0000000..859ef2a
--- /dev/null
+++ b/sys/dev/ena/ena_sysctl.c
@@ -0,0 +1,251 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * 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.
+ *
+ * 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.
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "ena_sysctl.h"
+
+static int	ena_sysctl_update_stats(SYSCTL_HANDLER_ARGS);
+static void	ena_sysctl_add_stats(struct ena_adapter *);
+
+void
+ena_sysctl_add_nodes(struct ena_adapter *adapter)
+{
+	ena_sysctl_add_stats(adapter);
+}
+
+static void
+ena_sysctl_add_stats(struct ena_adapter *adapter)
+{
+	device_t dev;
+
+	struct ena_ring *tx_ring;
+	struct ena_ring *rx_ring;
+
+	struct ena_hw_stats *hw_stats;
+	struct ena_stats_dev *dev_stats;
+	struct ena_stats_tx *tx_stats;
+	struct ena_stats_rx *rx_stats;
+	struct ena_com_stats_admin *admin_stats;
+
+	struct sysctl_ctx_list *ctx;
+	struct sysctl_oid *tree;
+	struct sysctl_oid_list *child;
+
+	struct sysctl_oid *queue_node, *tx_node, *rx_node, *hw_node;
+	struct sysctl_oid *admin_node;
+	struct sysctl_oid_list *queue_list, *tx_list, *rx_list, *hw_list;
+	struct sysctl_oid_list *admin_list;
+
+#define QUEUE_NAME_LEN 32
+	char namebuf[QUEUE_NAME_LEN];
+	int i;
+
+	dev = adapter->pdev;
+
+	ctx = device_get_sysctl_ctx(dev);
+	tree = device_get_sysctl_tree(dev);
+	child = SYSCTL_CHILDREN(tree);
+
+	tx_ring = adapter->tx_ring;
+	rx_ring = adapter->rx_ring;
+
+	hw_stats = &adapter->hw_stats;
+	dev_stats = &adapter->dev_stats;
+	admin_stats = &adapter->ena_dev->admin_queue.stats;
+
+	SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "tx_timeout",
+	    CTLFLAG_RD, &dev_stats->tx_timeout,
+	    "Driver TX timeouts");
+	SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "io_suspend",
+	    CTLFLAG_RD, &dev_stats->io_suspend,
+	    "IO queue suspends");
+	SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "io_resume",
+	    CTLFLAG_RD, &dev_stats->io_resume,
+	    "IO queue resumes");
+	SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "wd_expired",
+	    CTLFLAG_RD, &dev_stats->wd_expired,
+	    "Watchdog expiry count");
+	SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "interface_up",
+	    CTLFLAG_RD, &dev_stats->interface_up,
+	    "Network interface up count");
+	SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "interface_down",
+	    CTLFLAG_RD, &dev_stats->interface_down,
+	    "Network interface down count");
+	SYSCTL_ADD_COUNTER_U64(ctx, child, OID_AUTO, "admin_q_pause",
+	    CTLFLAG_RD, &dev_stats->admin_q_pause,
+	    "Admin queue pauses");
+
+	for (i = 0; i < adapter->num_queues; ++i, ++tx_ring, ++rx_ring) {
+		snprintf(namebuf, QUEUE_NAME_LEN, "queue%d", i);
+
+		queue_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO,
+		    namebuf, CTLFLAG_RD, NULL, "Queue Name");
+		queue_list = SYSCTL_CHILDREN(queue_node);
+
+		/* TX specific stats */
+		tx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO,
+		    "tx_ring", CTLFLAG_RD, NULL, "TX ring");
+		tx_list = SYSCTL_CHILDREN(tx_node);
+
+		tx_stats = &tx_ring->tx_stats;
+
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "count", CTLFLAG_RD,
+		    &tx_stats->cnt, "Packets sent");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "bytes", CTLFLAG_RD,
+		    &tx_stats->bytes, "Bytes sent");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "prepare_ctx_err", CTLFLAG_RD,
+		    &tx_stats->prepare_ctx_err,
+		    "TX buffer preparation failures");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "queue_wakeup", CTLFLAG_RD,
+		    &tx_stats->queue_wakeup, "Queue wakeups");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "dma_mapping_err", CTLFLAG_RD,
+		    &tx_stats->dma_mapping_err, "DMA mapping failures");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "unsupported_desc_num", CTLFLAG_RD,
+		    &tx_stats->unsupported_desc_num,
+		    "Excessive descriptor packet discards");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "napi_comp", CTLFLAG_RD,
+		    &tx_stats->napi_comp, "Napi completions");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "tx_poll", CTLFLAG_RD,
+		    &tx_stats->tx_poll, "TX poll count");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "doorbells", CTLFLAG_RD,
+		    &tx_stats->doorbells, "Queue doorbells");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "missing_tx_comp", CTLFLAG_RD,
+		    &tx_stats->missing_tx_comp, "TX completions missed");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "bad_req_id", CTLFLAG_RD,
+		    &tx_stats->bad_req_id, "Bad request id count");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		    "stops", CTLFLAG_RD,
+		    &tx_stats->queue_stop, "Queue stops");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		        "mbuf_collapses", CTLFLAG_RD,
+		        &tx_stats->collapse,
+		        "Mbuf collapse count");
+		SYSCTL_ADD_COUNTER_U64(ctx, tx_list, OID_AUTO,
+		        "mbuf_collapse_err", CTLFLAG_RD,
+		        &tx_stats->collapse_err,
+		        "Mbuf collapse failures");
+
+		/* RX specific stats */
+		rx_node = SYSCTL_ADD_NODE(ctx, queue_list, OID_AUTO,
+		    "rx_ring", CTLFLAG_RD, NULL, "RX ring");
+		rx_list = SYSCTL_CHILDREN(rx_node);
+
+		rx_stats = &rx_ring->rx_stats;
+
+		SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
+		    "count", CTLFLAG_RD,
+		    &rx_stats->cnt, "Packets received");
+		SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
+		    "bytes", CTLFLAG_RD,
+		    &rx_stats->bytes, "Bytes received");
+		SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
+		    "refil_partial", CTLFLAG_RD,
+		    &rx_stats->refil_partial, "Partial refilled mbufs");
+		SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
+		    "bad_csum", CTLFLAG_RD,
+		    &rx_stats->bad_csum, "Bad RX checksum");
+		SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
+		    "page_alloc_fail", CTLFLAG_RD,
+		    &rx_stats->page_alloc_fail, "Failed page allocs");
+		SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
+		    "mbuf_alloc_fail", CTLFLAG_RD,
+		    &rx_stats->mbuf_alloc_fail, "Failed mbuf allocs");
+		SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
+		    "dma_mapping_err", CTLFLAG_RD,
+		    &rx_stats->dma_mapping_err, "DMA mapping errors");
+		SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
+		    "bad_desc_num", CTLFLAG_RD,
+		    &rx_stats->bad_desc_num, "Bad descriptor count");
+		SYSCTL_ADD_COUNTER_U64(ctx, rx_list, OID_AUTO,
+		    "small_copy_len_pkt", CTLFLAG_RD,
+		    &rx_stats->small_copy_len_pkt, "Small copy packet count");
+	}
+
+	/* Stats read from device */
+	hw_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "hw_stats",
+	    CTLFLAG_RD, NULL, "Statistics from hardware");
+	hw_list = SYSCTL_CHILDREN(hw_node);
+
+	SYSCTL_ADD_U64(ctx, hw_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
+	    &hw_stats->rx_packets, 0, "Packets received");
+	SYSCTL_ADD_U64(ctx, hw_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
+	    &hw_stats->tx_packets, 0, "Packets transmitted");
+	SYSCTL_ADD_U64(ctx, hw_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
+	    &hw_stats->rx_bytes, 0, "Bytes received");
+	SYSCTL_ADD_U64(ctx, hw_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
+	    &hw_stats->tx_bytes, 0, "Bytes transmitted");
+	SYSCTL_ADD_U64(ctx, hw_list, OID_AUTO, "rx_drops", CTLFLAG_RD,
+	    &hw_stats->rx_drops, 0, "Receive packet drops");
+
+	SYSCTL_ADD_PROC(ctx, hw_list, OID_AUTO, "update_stats",
+	    CTLTYPE_INT|CTLFLAG_RD, adapter, 0, ena_sysctl_update_stats,
+	    "A", "Update stats from hardware");
+	/* ENA Admin queue stats */
+	admin_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "admin_stats",
+	    CTLFLAG_RD, NULL, "ENA Admin Queue statistics");
+	admin_list = SYSCTL_CHILDREN(admin_node);
+
+	SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "aborted_cmd", CTLFLAG_RD,
+	    &admin_stats->aborted_cmd, 0, "Aborted commands");
+	SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "sumbitted_cmd", CTLFLAG_RD,
+	    &admin_stats->submitted_cmd, 0, "Submitted commands");
+	SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "completed_cmd", CTLFLAG_RD,
+	    &admin_stats->completed_cmd, 0, "Completed commands");
+	SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "out_of_space", CTLFLAG_RD,
+	    &admin_stats->out_of_space, 0, "Queue out of space");
+	SYSCTL_ADD_U32(ctx, admin_list, OID_AUTO, "no_completion", CTLFLAG_RD,
+	    &admin_stats->no_completion, 0, "Commands not completed");
+}
+
+static int
+ena_sysctl_update_stats(SYSCTL_HANDLER_ARGS)
+{
+	struct ena_adapter *adapter = (struct ena_adapter *)arg1;
+	int rc;
+
+	if (adapter->up)
+		ena_update_stats_counters(adapter);
+
+	rc = sysctl_handle_string(oidp, "", 1, req);
+	return (rc);
+}
+
diff --git a/sys/dev/ena/ena_sysctl.h b/sys/dev/ena/ena_sysctl.h
new file mode 100644
index 0000000..b2c5ccc
--- /dev/null
+++ b/sys/dev/ena/ena_sysctl.h
@@ -0,0 +1,44 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+ * 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.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ *
+ */
+
+#ifndef ENA_SYSCTL_H
+#define ENA_SYSCTL_H
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+#include "ena.h"
+
+void	ena_sysctl_add_nodes(struct ena_adapter *);
+
+#endif /* !(ENA_SYSCTL_H) */
diff --git a/sys/modules/Makefile b/sys/modules/Makefile
index efc9b25..2b93223 100644
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -109,6 +109,7 @@ SUBDIR=	\
 	${_efirt} \
 	${_elink} \
 	${_em} \
+	${_ena} \
 	en \
 	${_ep} \
 	${_epic} \
@@ -575,6 +576,7 @@ _drm=		drm
 _drm2=		drm2
 _ed=		ed
 _em=		em
+_ena=		ena
 _ep=		ep
 _et=		et
 _exca=		exca
diff --git a/sys/modules/ena/Makefile b/sys/modules/ena/Makefile
new file mode 100644
index 0000000..fc70205
--- /dev/null
+++ b/sys/modules/ena/Makefile
@@ -0,0 +1,41 @@
+#
+# BSD LICENSE
+#
+# Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
+# 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.
+#
+# 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.
+#
+# $FreeBSD$
+#
+
+.PATH:	${SRCTOP}/sys/dev/ena \
+	${SRCTOP}/sys/contrib/ena-com
+
+KMOD	= if_ena
+SRCS	= ena.c ena_com.c ena_eth_com.c ena_sysctl.c
+SRCS	+= device_if.h bus_if.h pci_if.h
+CFLAGS  += -I${SRCTOP}/sys/contrib
+
+.include <bsd.kmod.mk>