Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 2123 insertions, 0 deletions

diff --git a/src/seastar/dpdk/drivers/net/szedata2/Makefile b/src/seastar/dpdk/drivers/net/szedata2/Makefile
new file mode 100644
index 00000000..836c3b2a
--- /dev/null
+++ b/src/seastar/dpdk/drivers/net/szedata2/Makefile
@@ -0,0 +1,57 @@
+#   BSD LICENSE
+#
+#   Copyright (c) 2015 CESNET
+#   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 CESNET 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 $(RTE_SDK)/mk/rte.vars.mk
+
+#
+# library name
+#
+LIB = librte_pmd_szedata2.a
+
+CFLAGS += -O3
+CFLAGS += $(WERROR_FLAGS)
+LDLIBS += -lsze2
+
+EXPORT_MAP := rte_pmd_szedata2_version.map
+
+LIBABIVER := 1
+
+#
+# all source are stored in SRCS-y
+#
+SRCS-$(CONFIG_RTE_LIBRTE_PMD_SZEDATA2) += rte_eth_szedata2.c
+
+#
+# Export include files
+#
+SYMLINK-y-include +=
+
+include $(RTE_SDK)/mk/rte.lib.mk
diff --git a/src/seastar/dpdk/drivers/net/szedata2/rte_eth_szedata2.c b/src/seastar/dpdk/drivers/net/szedata2/rte_eth_szedata2.c
new file mode 100644
index 00000000..54212b71
--- /dev/null
+++ b/src/seastar/dpdk/drivers/net/szedata2/rte_eth_szedata2.c
@@ -0,0 +1,1613 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) 2015 - 2016 CESNET
+ *   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 CESNET 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 <stdint.h>
+#include <unistd.h>
+#include <stdbool.h>
+#include <err.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#include <libsze2.h>
+
+#include <rte_mbuf.h>
+#include <rte_ethdev.h>
+#include <rte_ethdev_pci.h>
+#include <rte_malloc.h>
+#include <rte_memcpy.h>
+#include <rte_kvargs.h>
+#include <rte_dev.h>
+#include <rte_atomic.h>
+
+#include "rte_eth_szedata2.h"
+
+#define RTE_ETH_SZEDATA2_MAX_RX_QUEUES 32
+#define RTE_ETH_SZEDATA2_MAX_TX_QUEUES 32
+#define RTE_ETH_SZEDATA2_TX_LOCK_SIZE (32 * 1024 * 1024)
+
+/**
+ * size of szedata2_packet header with alignment
+ */
+#define RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED 8
+
+#define RTE_SZEDATA2_DRIVER_NAME net_szedata2
+#define RTE_SZEDATA2_PCI_DRIVER_NAME "rte_szedata2_pmd"
+
+#define SZEDATA2_DEV_PATH_FMT "/dev/szedataII%u"
+
+struct szedata2_rx_queue {
+	struct szedata *sze;
+	uint8_t rx_channel;
+	uint8_t in_port;
+	struct rte_mempool *mb_pool;
+	volatile uint64_t rx_pkts;
+	volatile uint64_t rx_bytes;
+	volatile uint64_t err_pkts;
+};
+
+struct szedata2_tx_queue {
+	struct szedata *sze;
+	uint8_t tx_channel;
+	volatile uint64_t tx_pkts;
+	volatile uint64_t tx_bytes;
+	volatile uint64_t err_pkts;
+};
+
+struct pmd_internals {
+	struct szedata2_rx_queue rx_queue[RTE_ETH_SZEDATA2_MAX_RX_QUEUES];
+	struct szedata2_tx_queue tx_queue[RTE_ETH_SZEDATA2_MAX_TX_QUEUES];
+	uint16_t max_rx_queues;
+	uint16_t max_tx_queues;
+	char sze_dev[PATH_MAX];
+	struct rte_mem_resource *pci_rsc;
+};
+
+static struct ether_addr eth_addr = {
+	.addr_bytes = { 0x00, 0x11, 0x17, 0x00, 0x00, 0x00 }
+};
+
+static uint16_t
+eth_szedata2_rx(void *queue,
+		struct rte_mbuf **bufs,
+		uint16_t nb_pkts)
+{
+	unsigned int i;
+	struct rte_mbuf *mbuf;
+	struct szedata2_rx_queue *sze_q = queue;
+	struct rte_pktmbuf_pool_private *mbp_priv;
+	uint16_t num_rx = 0;
+	uint16_t buf_size;
+	uint16_t sg_size;
+	uint16_t hw_size;
+	uint16_t packet_size;
+	uint64_t num_bytes = 0;
+	struct szedata *sze = sze_q->sze;
+	uint8_t *header_ptr = NULL; /* header of packet */
+	uint8_t *packet_ptr1 = NULL;
+	uint8_t *packet_ptr2 = NULL;
+	uint16_t packet_len1 = 0;
+	uint16_t packet_len2 = 0;
+	uint16_t hw_data_align;
+
+	if (unlikely(sze_q->sze == NULL || nb_pkts == 0))
+		return 0;
+
+	/*
+	 * Reads the given number of packets from szedata2 channel given
+	 * by queue and copies the packet data into a newly allocated mbuf
+	 * to return.
+	 */
+	for (i = 0; i < nb_pkts; i++) {
+		mbuf = rte_pktmbuf_alloc(sze_q->mb_pool);
+
+		if (unlikely(mbuf == NULL))
+			break;
+
+		/* get the next sze packet */
+		if (sze->ct_rx_lck != NULL && !sze->ct_rx_rem_bytes &&
+				sze->ct_rx_lck->next == NULL) {
+			/* unlock old data */
+			szedata_rx_unlock_data(sze_q->sze, sze->ct_rx_lck_orig);
+			sze->ct_rx_lck_orig = NULL;
+			sze->ct_rx_lck = NULL;
+		}
+
+		if (!sze->ct_rx_rem_bytes && sze->ct_rx_lck_orig == NULL) {
+			/* nothing to read, lock new data */
+			sze->ct_rx_lck = szedata_rx_lock_data(sze_q->sze, ~0U);
+			sze->ct_rx_lck_orig = sze->ct_rx_lck;
+
+			if (sze->ct_rx_lck == NULL) {
+				/* nothing to lock */
+				rte_pktmbuf_free(mbuf);
+				break;
+			}
+
+			sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
+			sze->ct_rx_rem_bytes = sze->ct_rx_lck->len;
+
+			if (!sze->ct_rx_rem_bytes) {
+				rte_pktmbuf_free(mbuf);
+				break;
+			}
+		}
+
+		if (sze->ct_rx_rem_bytes < RTE_SZE2_PACKET_HEADER_SIZE) {
+			/*
+			 * cut in header
+			 * copy parts of header to merge buffer
+			 */
+			if (sze->ct_rx_lck->next == NULL) {
+				rte_pktmbuf_free(mbuf);
+				break;
+			}
+
+			/* copy first part of header */
+			rte_memcpy(sze->ct_rx_buffer, sze->ct_rx_cur_ptr,
+					sze->ct_rx_rem_bytes);
+
+			/* copy second part of header */
+			sze->ct_rx_lck = sze->ct_rx_lck->next;
+			sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
+			rte_memcpy(sze->ct_rx_buffer + sze->ct_rx_rem_bytes,
+				sze->ct_rx_cur_ptr,
+				RTE_SZE2_PACKET_HEADER_SIZE -
+				sze->ct_rx_rem_bytes);
+
+			sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE -
+				sze->ct_rx_rem_bytes;
+			sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
+				RTE_SZE2_PACKET_HEADER_SIZE +
+				sze->ct_rx_rem_bytes;
+
+			header_ptr = (uint8_t *)sze->ct_rx_buffer;
+		} else {
+			/* not cut */
+			header_ptr = (uint8_t *)sze->ct_rx_cur_ptr;
+			sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE;
+			sze->ct_rx_rem_bytes -= RTE_SZE2_PACKET_HEADER_SIZE;
+		}
+
+		sg_size = le16toh(*((uint16_t *)header_ptr));
+		hw_size = le16toh(*(((uint16_t *)header_ptr) + 1));
+		packet_size = sg_size -
+			RTE_SZE2_ALIGN8(RTE_SZE2_PACKET_HEADER_SIZE + hw_size);
+
+
+		/* checks if packet all right */
+		if (!sg_size)
+			errx(5, "Zero segsize");
+
+		/* check sg_size and hwsize */
+		if (hw_size > sg_size - RTE_SZE2_PACKET_HEADER_SIZE) {
+			errx(10, "Hwsize bigger than expected. Segsize: %d, "
+				"hwsize: %d", sg_size, hw_size);
+		}
+
+		hw_data_align =
+			RTE_SZE2_ALIGN8(RTE_SZE2_PACKET_HEADER_SIZE + hw_size) -
+			RTE_SZE2_PACKET_HEADER_SIZE;
+
+		if (sze->ct_rx_rem_bytes >=
+				(uint16_t)(sg_size -
+				RTE_SZE2_PACKET_HEADER_SIZE)) {
+			/* no cut */
+			/* one packet ready - go to another */
+			packet_ptr1 = sze->ct_rx_cur_ptr + hw_data_align;
+			packet_len1 = packet_size;
+			packet_ptr2 = NULL;
+			packet_len2 = 0;
+
+			sze->ct_rx_cur_ptr += RTE_SZE2_ALIGN8(sg_size) -
+				RTE_SZE2_PACKET_HEADER_SIZE;
+			sze->ct_rx_rem_bytes -= RTE_SZE2_ALIGN8(sg_size) -
+				RTE_SZE2_PACKET_HEADER_SIZE;
+		} else {
+			/* cut in data */
+			if (sze->ct_rx_lck->next == NULL) {
+				errx(6, "Need \"next\" lock, "
+					"but it is missing: %u",
+					sze->ct_rx_rem_bytes);
+			}
+
+			/* skip hw data */
+			if (sze->ct_rx_rem_bytes <= hw_data_align) {
+				uint16_t rem_size = hw_data_align -
+					sze->ct_rx_rem_bytes;
+
+				/* MOVE to next lock */
+				sze->ct_rx_lck = sze->ct_rx_lck->next;
+				sze->ct_rx_cur_ptr =
+					(void *)(((uint8_t *)
+					(sze->ct_rx_lck->start)) + rem_size);
+
+				packet_ptr1 = sze->ct_rx_cur_ptr;
+				packet_len1 = packet_size;
+				packet_ptr2 = NULL;
+				packet_len2 = 0;
+
+				sze->ct_rx_cur_ptr +=
+					RTE_SZE2_ALIGN8(packet_size);
+				sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
+					rem_size - RTE_SZE2_ALIGN8(packet_size);
+			} else {
+				/* get pointer and length from first part */
+				packet_ptr1 = sze->ct_rx_cur_ptr +
+					hw_data_align;
+				packet_len1 = sze->ct_rx_rem_bytes -
+					hw_data_align;
+
+				/* MOVE to next lock */
+				sze->ct_rx_lck = sze->ct_rx_lck->next;
+				sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
+
+				/* get pointer and length from second part */
+				packet_ptr2 = sze->ct_rx_cur_ptr;
+				packet_len2 = packet_size - packet_len1;
+
+				sze->ct_rx_cur_ptr +=
+					RTE_SZE2_ALIGN8(packet_size) -
+					packet_len1;
+				sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
+					(RTE_SZE2_ALIGN8(packet_size) -
+					 packet_len1);
+			}
+		}
+
+		if (unlikely(packet_ptr1 == NULL)) {
+			rte_pktmbuf_free(mbuf);
+			break;
+		}
+
+		/* get the space available for data in the mbuf */
+		mbp_priv = rte_mempool_get_priv(sze_q->mb_pool);
+		buf_size = (uint16_t)(mbp_priv->mbuf_data_room_size -
+				RTE_PKTMBUF_HEADROOM);
+
+		if (packet_size <= buf_size) {
+			/* sze packet will fit in one mbuf, go ahead and copy */
+			rte_memcpy(rte_pktmbuf_mtod(mbuf, void *),
+					packet_ptr1, packet_len1);
+			if (packet_ptr2 != NULL) {
+				rte_memcpy((void *)(rte_pktmbuf_mtod(mbuf,
+					uint8_t *) + packet_len1),
+					packet_ptr2, packet_len2);
+			}
+			mbuf->data_len = (uint16_t)packet_size;
+
+			mbuf->pkt_len = packet_size;
+			mbuf->port = sze_q->in_port;
+			bufs[num_rx] = mbuf;
+			num_rx++;
+			num_bytes += packet_size;
+		} else {
+			/*
+			 * sze packet will not fit in one mbuf,
+			 * scattered mode is not enabled, drop packet
+			 */
+			RTE_LOG(ERR, PMD,
+				"SZE segment %d bytes will not fit in one mbuf "
+				"(%d bytes), scattered mode is not enabled, "
+				"drop packet!!\n",
+				packet_size, buf_size);
+			rte_pktmbuf_free(mbuf);
+		}
+	}
+
+	sze_q->rx_pkts += num_rx;
+	sze_q->rx_bytes += num_bytes;
+	return num_rx;
+}
+
+static uint16_t
+eth_szedata2_rx_scattered(void *queue,
+		struct rte_mbuf **bufs,
+		uint16_t nb_pkts)
+{
+	unsigned int i;
+	struct rte_mbuf *mbuf;
+	struct szedata2_rx_queue *sze_q = queue;
+	struct rte_pktmbuf_pool_private *mbp_priv;
+	uint16_t num_rx = 0;
+	uint16_t buf_size;
+	uint16_t sg_size;
+	uint16_t hw_size;
+	uint16_t packet_size;
+	uint64_t num_bytes = 0;
+	struct szedata *sze = sze_q->sze;
+	uint8_t *header_ptr = NULL; /* header of packet */
+	uint8_t *packet_ptr1 = NULL;
+	uint8_t *packet_ptr2 = NULL;
+	uint16_t packet_len1 = 0;
+	uint16_t packet_len2 = 0;
+	uint16_t hw_data_align;
+
+	if (unlikely(sze_q->sze == NULL || nb_pkts == 0))
+		return 0;
+
+	/*
+	 * Reads the given number of packets from szedata2 channel given
+	 * by queue and copies the packet data into a newly allocated mbuf
+	 * to return.
+	 */
+	for (i = 0; i < nb_pkts; i++) {
+		const struct szedata_lock *ct_rx_lck_backup;
+		unsigned int ct_rx_rem_bytes_backup;
+		unsigned char *ct_rx_cur_ptr_backup;
+
+		/* get the next sze packet */
+		if (sze->ct_rx_lck != NULL && !sze->ct_rx_rem_bytes &&
+				sze->ct_rx_lck->next == NULL) {
+			/* unlock old data */
+			szedata_rx_unlock_data(sze_q->sze, sze->ct_rx_lck_orig);
+			sze->ct_rx_lck_orig = NULL;
+			sze->ct_rx_lck = NULL;
+		}
+
+		/*
+		 * Store items from sze structure which can be changed
+		 * before mbuf allocating. Use these items in case of mbuf
+		 * allocating failure.
+		 */
+		ct_rx_lck_backup = sze->ct_rx_lck;
+		ct_rx_rem_bytes_backup = sze->ct_rx_rem_bytes;
+		ct_rx_cur_ptr_backup = sze->ct_rx_cur_ptr;
+
+		if (!sze->ct_rx_rem_bytes && sze->ct_rx_lck_orig == NULL) {
+			/* nothing to read, lock new data */
+			sze->ct_rx_lck = szedata_rx_lock_data(sze_q->sze, ~0U);
+			sze->ct_rx_lck_orig = sze->ct_rx_lck;
+
+			/*
+			 * Backup items from sze structure must be updated
+			 * after locking to contain pointers to new locks.
+			 */
+			ct_rx_lck_backup = sze->ct_rx_lck;
+			ct_rx_rem_bytes_backup = sze->ct_rx_rem_bytes;
+			ct_rx_cur_ptr_backup = sze->ct_rx_cur_ptr;
+
+			if (sze->ct_rx_lck == NULL)
+				/* nothing to lock */
+				break;
+
+			sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
+			sze->ct_rx_rem_bytes = sze->ct_rx_lck->len;
+
+			if (!sze->ct_rx_rem_bytes)
+				break;
+		}
+
+		if (sze->ct_rx_rem_bytes < RTE_SZE2_PACKET_HEADER_SIZE) {
+			/*
+			 * cut in header - copy parts of header to merge buffer
+			 */
+			if (sze->ct_rx_lck->next == NULL)
+				break;
+
+			/* copy first part of header */
+			rte_memcpy(sze->ct_rx_buffer, sze->ct_rx_cur_ptr,
+					sze->ct_rx_rem_bytes);
+
+			/* copy second part of header */
+			sze->ct_rx_lck = sze->ct_rx_lck->next;
+			sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
+			rte_memcpy(sze->ct_rx_buffer + sze->ct_rx_rem_bytes,
+				sze->ct_rx_cur_ptr,
+				RTE_SZE2_PACKET_HEADER_SIZE -
+				sze->ct_rx_rem_bytes);
+
+			sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE -
+				sze->ct_rx_rem_bytes;
+			sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
+				RTE_SZE2_PACKET_HEADER_SIZE +
+				sze->ct_rx_rem_bytes;
+
+			header_ptr = (uint8_t *)sze->ct_rx_buffer;
+		} else {
+			/* not cut */
+			header_ptr = (uint8_t *)sze->ct_rx_cur_ptr;
+			sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE;
+			sze->ct_rx_rem_bytes -= RTE_SZE2_PACKET_HEADER_SIZE;
+		}
+
+		sg_size = le16toh(*((uint16_t *)header_ptr));
+		hw_size = le16toh(*(((uint16_t *)header_ptr) + 1));
+		packet_size = sg_size -
+			RTE_SZE2_ALIGN8(RTE_SZE2_PACKET_HEADER_SIZE + hw_size);
+
+
+		/* checks if packet all right */
+		if (!sg_size)
+			errx(5, "Zero segsize");
+
+		/* check sg_size and hwsize */
+		if (hw_size > sg_size - RTE_SZE2_PACKET_HEADER_SIZE) {
+			errx(10, "Hwsize bigger than expected. Segsize: %d, "
+					"hwsize: %d", sg_size, hw_size);
+		}
+
+		hw_data_align =
+			RTE_SZE2_ALIGN8((RTE_SZE2_PACKET_HEADER_SIZE +
+			hw_size)) - RTE_SZE2_PACKET_HEADER_SIZE;
+
+		if (sze->ct_rx_rem_bytes >=
+				(uint16_t)(sg_size -
+				RTE_SZE2_PACKET_HEADER_SIZE)) {
+			/* no cut */
+			/* one packet ready - go to another */
+			packet_ptr1 = sze->ct_rx_cur_ptr + hw_data_align;
+			packet_len1 = packet_size;
+			packet_ptr2 = NULL;
+			packet_len2 = 0;
+
+			sze->ct_rx_cur_ptr += RTE_SZE2_ALIGN8(sg_size) -
+				RTE_SZE2_PACKET_HEADER_SIZE;
+			sze->ct_rx_rem_bytes -= RTE_SZE2_ALIGN8(sg_size) -
+				RTE_SZE2_PACKET_HEADER_SIZE;
+		} else {
+			/* cut in data */
+			if (sze->ct_rx_lck->next == NULL) {
+				errx(6, "Need \"next\" lock, but it is "
+					"missing: %u", sze->ct_rx_rem_bytes);
+			}
+
+			/* skip hw data */
+			if (sze->ct_rx_rem_bytes <= hw_data_align) {
+				uint16_t rem_size = hw_data_align -
+					sze->ct_rx_rem_bytes;
+
+				/* MOVE to next lock */
+				sze->ct_rx_lck = sze->ct_rx_lck->next;
+				sze->ct_rx_cur_ptr =
+					(void *)(((uint8_t *)
+					(sze->ct_rx_lck->start)) + rem_size);
+
+				packet_ptr1 = sze->ct_rx_cur_ptr;
+				packet_len1 = packet_size;
+				packet_ptr2 = NULL;
+				packet_len2 = 0;
+
+				sze->ct_rx_cur_ptr +=
+					RTE_SZE2_ALIGN8(packet_size);
+				sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
+					rem_size - RTE_SZE2_ALIGN8(packet_size);
+			} else {
+				/* get pointer and length from first part */
+				packet_ptr1 = sze->ct_rx_cur_ptr +
+					hw_data_align;
+				packet_len1 = sze->ct_rx_rem_bytes -
+					hw_data_align;
+
+				/* MOVE to next lock */
+				sze->ct_rx_lck = sze->ct_rx_lck->next;
+				sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
+
+				/* get pointer and length from second part */
+				packet_ptr2 = sze->ct_rx_cur_ptr;
+				packet_len2 = packet_size - packet_len1;
+
+				sze->ct_rx_cur_ptr +=
+					RTE_SZE2_ALIGN8(packet_size) -
+					packet_len1;
+				sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
+					(RTE_SZE2_ALIGN8(packet_size) -
+					 packet_len1);
+			}
+		}
+
+		if (unlikely(packet_ptr1 == NULL))
+			break;
+
+		mbuf = rte_pktmbuf_alloc(sze_q->mb_pool);
+
+		if (unlikely(mbuf == NULL)) {
+			/*
+			 * Restore items from sze structure to state after
+			 * unlocking (eventually locking).
+			 */
+			sze->ct_rx_lck = ct_rx_lck_backup;
+			sze->ct_rx_rem_bytes = ct_rx_rem_bytes_backup;
+			sze->ct_rx_cur_ptr = ct_rx_cur_ptr_backup;
+			break;
+		}
+
+		/* get the space available for data in the mbuf */
+		mbp_priv = rte_mempool_get_priv(sze_q->mb_pool);
+		buf_size = (uint16_t)(mbp_priv->mbuf_data_room_size -
+				RTE_PKTMBUF_HEADROOM);
+
+		if (packet_size <= buf_size) {
+			/* sze packet will fit in one mbuf, go ahead and copy */
+			rte_memcpy(rte_pktmbuf_mtod(mbuf, void *),
+					packet_ptr1, packet_len1);
+			if (packet_ptr2 != NULL) {
+				rte_memcpy((void *)
+					(rte_pktmbuf_mtod(mbuf, uint8_t *) +
+					packet_len1), packet_ptr2, packet_len2);
+			}
+			mbuf->data_len = (uint16_t)packet_size;
+		} else {
+			/*
+			 * sze packet will not fit in one mbuf,
+			 * scatter packet into more mbufs
+			 */
+			struct rte_mbuf *m = mbuf;
+			uint16_t len = rte_pktmbuf_tailroom(mbuf);
+
+			/* copy first part of packet */
+			/* fill first mbuf */
+			rte_memcpy(rte_pktmbuf_append(mbuf, len), packet_ptr1,
+				len);
+			packet_len1 -= len;
+			packet_ptr1 = ((uint8_t *)packet_ptr1) + len;
+
+			while (packet_len1 > 0) {
+				/* fill new mbufs */
+				m->next = rte_pktmbuf_alloc(sze_q->mb_pool);
+
+				if (unlikely(m->next == NULL)) {
+					rte_pktmbuf_free(mbuf);
+					/*
+					 * Restore items from sze structure
+					 * to state after unlocking (eventually
+					 * locking).
+					 */
+					sze->ct_rx_lck = ct_rx_lck_backup;
+					sze->ct_rx_rem_bytes =
+						ct_rx_rem_bytes_backup;
+					sze->ct_rx_cur_ptr =
+						ct_rx_cur_ptr_backup;
+					goto finish;
+				}
+
+				m = m->next;
+
+				len = RTE_MIN(rte_pktmbuf_tailroom(m),
+					packet_len1);
+				rte_memcpy(rte_pktmbuf_append(mbuf, len),
+					packet_ptr1, len);
+
+				(mbuf->nb_segs)++;
+				packet_len1 -= len;
+				packet_ptr1 = ((uint8_t *)packet_ptr1) + len;
+			}
+
+			if (packet_ptr2 != NULL) {
+				/* copy second part of packet, if exists */
+				/* fill the rest of currently last mbuf */
+				len = rte_pktmbuf_tailroom(m);
+				rte_memcpy(rte_pktmbuf_append(mbuf, len),
+					packet_ptr2, len);
+				packet_len2 -= len;
+				packet_ptr2 = ((uint8_t *)packet_ptr2) + len;
+
+				while (packet_len2 > 0) {
+					/* fill new mbufs */
+					m->next = rte_pktmbuf_alloc(
+							sze_q->mb_pool);
+
+					if (unlikely(m->next == NULL)) {
+						rte_pktmbuf_free(mbuf);
+						/*
+						 * Restore items from sze
+						 * structure to state after
+						 * unlocking (eventually
+						 * locking).
+						 */
+						sze->ct_rx_lck =
+							ct_rx_lck_backup;
+						sze->ct_rx_rem_bytes =
+							ct_rx_rem_bytes_backup;
+						sze->ct_rx_cur_ptr =
+							ct_rx_cur_ptr_backup;
+						goto finish;
+					}
+
+					m = m->next;
+
+					len = RTE_MIN(rte_pktmbuf_tailroom(m),
+						packet_len2);
+					rte_memcpy(
+						rte_pktmbuf_append(mbuf, len),
+						packet_ptr2, len);
+
+					(mbuf->nb_segs)++;
+					packet_len2 -= len;
+					packet_ptr2 = ((uint8_t *)packet_ptr2) +
+						len;
+				}
+			}
+		}
+		mbuf->pkt_len = packet_size;
+		mbuf->port = sze_q->in_port;
+		bufs[num_rx] = mbuf;
+		num_rx++;
+		num_bytes += packet_size;
+	}
+
+finish:
+	sze_q->rx_pkts += num_rx;
+	sze_q->rx_bytes += num_bytes;
+	return num_rx;
+}
+
+static uint16_t
+eth_szedata2_tx(void *queue,
+		struct rte_mbuf **bufs,
+		uint16_t nb_pkts)
+{
+	struct rte_mbuf *mbuf;
+	struct szedata2_tx_queue *sze_q = queue;
+	uint16_t num_tx = 0;
+	uint64_t num_bytes = 0;
+
+	const struct szedata_lock *lck;
+	uint32_t lock_size;
+	uint32_t lock_size2;
+	void *dst;
+	uint32_t pkt_len;
+	uint32_t hwpkt_len;
+	uint32_t unlock_size;
+	uint32_t rem_len;
+	uint8_t mbuf_segs;
+	uint16_t pkt_left = nb_pkts;
+
+	if (sze_q->sze == NULL || nb_pkts == 0)
+		return 0;
+
+	while (pkt_left > 0) {
+		unlock_size = 0;
+		lck = szedata_tx_lock_data(sze_q->sze,
+			RTE_ETH_SZEDATA2_TX_LOCK_SIZE,
+			sze_q->tx_channel);
+		if (lck == NULL)
+			continue;
+
+		dst = lck->start;
+		lock_size = lck->len;
+		lock_size2 = lck->next ? lck->next->len : 0;
+
+next_packet:
+		mbuf = bufs[nb_pkts - pkt_left];
+
+		pkt_len = mbuf->pkt_len;
+		mbuf_segs = mbuf->nb_segs;
+
+		hwpkt_len = RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED +
+			RTE_SZE2_ALIGN8(pkt_len);
+
+		if (lock_size + lock_size2 < hwpkt_len) {
+			szedata_tx_unlock_data(sze_q->sze, lck, unlock_size);
+			continue;
+		}
+
+		num_bytes += pkt_len;
+
+		if (lock_size > hwpkt_len) {
+			void *tmp_dst;
+
+			rem_len = 0;
+
+			/* write packet length at first 2 bytes in 8B header */
+			*((uint16_t *)dst) = htole16(
+					RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED +
+					pkt_len);
+			*(((uint16_t *)dst) + 1) = htole16(0);
+
+			/* copy packet from mbuf */
+			tmp_dst = ((uint8_t *)(dst)) +
+				RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED;
+			if (mbuf_segs == 1) {
+				/*
+				 * non-scattered packet,
+				 * transmit from one mbuf
+				 */
+				rte_memcpy(tmp_dst,
+					rte_pktmbuf_mtod(mbuf, const void *),
+					pkt_len);
+			} else {
+				/* scattered packet, transmit from more mbufs */
+				struct rte_mbuf *m = mbuf;
+				while (m) {
+					rte_memcpy(tmp_dst,
+						rte_pktmbuf_mtod(m,
+						const void *),
+						m->data_len);
+					tmp_dst = ((uint8_t *)(tmp_dst)) +
+						m->data_len;
+					m = m->next;
+				}
+			}
+
+
+			dst = ((uint8_t *)dst) + hwpkt_len;
+			unlock_size += hwpkt_len;
+			lock_size -= hwpkt_len;
+
+			rte_pktmbuf_free(mbuf);
+			num_tx++;
+			pkt_left--;
+			if (pkt_left == 0) {
+				szedata_tx_unlock_data(sze_q->sze, lck,
+					unlock_size);
+				break;
+			}
+			goto next_packet;
+		} else if (lock_size + lock_size2 >= hwpkt_len) {
+			void *tmp_dst;
+			uint16_t write_len;
+
+			/* write packet length at first 2 bytes in 8B header */
+			*((uint16_t *)dst) =
+				htole16(RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED +
+					pkt_len);
+			*(((uint16_t *)dst) + 1) = htole16(0);
+
+			/*
+			 * If the raw packet (pkt_len) is smaller than lock_size
+			 * get the correct length for memcpy
+			 */
+			write_len =
+				pkt_len < lock_size -
+				RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED ?
+				pkt_len :
+				lock_size - RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED;
+
+			rem_len = hwpkt_len - lock_size;
+
+			tmp_dst = ((uint8_t *)(dst)) +
+				RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED;
+			if (mbuf_segs == 1) {
+				/*
+				 * non-scattered packet,
+				 * transmit from one mbuf
+				 */
+				/* copy part of packet to first area */
+				rte_memcpy(tmp_dst,
+					rte_pktmbuf_mtod(mbuf, const void *),
+					write_len);
+
+				if (lck->next)
+					dst = lck->next->start;
+
+				/* copy part of packet to second area */
+				rte_memcpy(dst,
+					(const void *)(rte_pktmbuf_mtod(mbuf,
+							const uint8_t *) +
+					write_len), pkt_len - write_len);
+			} else {
+				/* scattered packet, transmit from more mbufs */
+				struct rte_mbuf *m = mbuf;
+				uint16_t written = 0;
+				uint16_t to_write = 0;
+				bool new_mbuf = true;
+				uint16_t write_off = 0;
+
+				/* copy part of packet to first area */
+				while (m && written < write_len) {
+					to_write = RTE_MIN(m->data_len,
+							write_len - written);
+					rte_memcpy(tmp_dst,
+						rte_pktmbuf_mtod(m,
+							const void *),
+						to_write);
+
+					tmp_dst = ((uint8_t *)(tmp_dst)) +
+						to_write;
+					if (m->data_len <= write_len -
+							written) {
+						m = m->next;
+						new_mbuf = true;
+					} else {
+						new_mbuf = false;
+					}
+					written += to_write;
+				}
+
+				if (lck->next)
+					dst = lck->next->start;
+
+				tmp_dst = dst;
+				written = 0;
+				write_off = new_mbuf ? 0 : to_write;
+
+				/* copy part of packet to second area */
+				while (m && written < pkt_len - write_len) {
+					rte_memcpy(tmp_dst, (const void *)
+						(rte_pktmbuf_mtod(m,
+						uint8_t *) + write_off),
+						m->data_len - write_off);
+
+					tmp_dst = ((uint8_t *)(tmp_dst)) +
+						(m->data_len - write_off);
+					written += m->data_len - write_off;
+					m = m->next;
+					write_off = 0;
+				}
+			}
+
+			dst = ((uint8_t *)dst) + rem_len;
+			unlock_size += hwpkt_len;
+			lock_size = lock_size2 - rem_len;
+			lock_size2 = 0;
+
+			rte_pktmbuf_free(mbuf);
+			num_tx++;
+		}
+
+		szedata_tx_unlock_data(sze_q->sze, lck, unlock_size);
+		pkt_left--;
+	}
+
+	sze_q->tx_pkts += num_tx;
+	sze_q->err_pkts += nb_pkts - num_tx;
+	sze_q->tx_bytes += num_bytes;
+	return num_tx;
+}
+
+static int
+eth_rx_queue_start(struct rte_eth_dev *dev, uint16_t rxq_id)
+{
+	struct szedata2_rx_queue *rxq = dev->data->rx_queues[rxq_id];
+	int ret;
+	struct pmd_internals *internals = (struct pmd_internals *)
+		dev->data->dev_private;
+
+	if (rxq->sze == NULL) {
+		uint32_t rx = 1 << rxq->rx_channel;
+		uint32_t tx = 0;
+		rxq->sze = szedata_open(internals->sze_dev);
+		if (rxq->sze == NULL)
+			return -EINVAL;
+		ret = szedata_subscribe3(rxq->sze, &rx, &tx);
+		if (ret != 0 || rx == 0)
+			goto err;
+	}
+
+	ret = szedata_start(rxq->sze);
+	if (ret != 0)
+		goto err;
+	dev->data->rx_queue_state[rxq_id] = RTE_ETH_QUEUE_STATE_STARTED;
+	return 0;
+
+err:
+	szedata_close(rxq->sze);
+	rxq->sze = NULL;
+	return -EINVAL;
+}
+
+static int
+eth_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rxq_id)
+{
+	struct szedata2_rx_queue *rxq = dev->data->rx_queues[rxq_id];
+
+	if (rxq->sze != NULL) {
+		szedata_close(rxq->sze);
+		rxq->sze = NULL;
+	}
+
+	dev->data->rx_queue_state[rxq_id] = RTE_ETH_QUEUE_STATE_STOPPED;
+	return 0;
+}
+
+static int
+eth_tx_queue_start(struct rte_eth_dev *dev, uint16_t txq_id)
+{
+	struct szedata2_tx_queue *txq = dev->data->tx_queues[txq_id];
+	int ret;
+	struct pmd_internals *internals = (struct pmd_internals *)
+		dev->data->dev_private;
+
+	if (txq->sze == NULL) {
+		uint32_t rx = 0;
+		uint32_t tx = 1 << txq->tx_channel;
+		txq->sze = szedata_open(internals->sze_dev);
+		if (txq->sze == NULL)
+			return -EINVAL;
+		ret = szedata_subscribe3(txq->sze, &rx, &tx);
+		if (ret != 0 || tx == 0)
+			goto err;
+	}
+
+	ret = szedata_start(txq->sze);
+	if (ret != 0)
+		goto err;
+	dev->data->tx_queue_state[txq_id] = RTE_ETH_QUEUE_STATE_STARTED;
+	return 0;
+
+err:
+	szedata_close(txq->sze);
+	txq->sze = NULL;
+	return -EINVAL;
+}
+
+static int
+eth_tx_queue_stop(struct rte_eth_dev *dev, uint16_t txq_id)
+{
+	struct szedata2_tx_queue *txq = dev->data->tx_queues[txq_id];
+
+	if (txq->sze != NULL) {
+		szedata_close(txq->sze);
+		txq->sze = NULL;
+	}
+
+	dev->data->tx_queue_state[txq_id] = RTE_ETH_QUEUE_STATE_STOPPED;
+	return 0;
+}
+
+static int
+eth_dev_start(struct rte_eth_dev *dev)
+{
+	int ret;
+	uint16_t i;
+	uint16_t nb_rx = dev->data->nb_rx_queues;
+	uint16_t nb_tx = dev->data->nb_tx_queues;
+
+	for (i = 0; i < nb_rx; i++) {
+		ret = eth_rx_queue_start(dev, i);
+		if (ret != 0)
+			goto err_rx;
+	}
+
+	for (i = 0; i < nb_tx; i++) {
+		ret = eth_tx_queue_start(dev, i);
+		if (ret != 0)
+			goto err_tx;
+	}
+
+	return 0;
+
+err_tx:
+	for (i = 0; i < nb_tx; i++)
+		eth_tx_queue_stop(dev, i);
+err_rx:
+	for (i = 0; i < nb_rx; i++)
+		eth_rx_queue_stop(dev, i);
+	return ret;
+}
+
+static void
+eth_dev_stop(struct rte_eth_dev *dev)
+{
+	uint16_t i;
+	uint16_t nb_rx = dev->data->nb_rx_queues;
+	uint16_t nb_tx = dev->data->nb_tx_queues;
+
+	for (i = 0; i < nb_tx; i++)
+		eth_tx_queue_stop(dev, i);
+
+	for (i = 0; i < nb_rx; i++)
+		eth_rx_queue_stop(dev, i);
+}
+
+static int
+eth_dev_configure(struct rte_eth_dev *dev)
+{
+	struct rte_eth_dev_data *data = dev->data;
+	if (data->dev_conf.rxmode.enable_scatter == 1) {
+		dev->rx_pkt_burst = eth_szedata2_rx_scattered;
+		data->scattered_rx = 1;
+	} else {
+		dev->rx_pkt_burst = eth_szedata2_rx;
+		data->scattered_rx = 0;
+	}
+	return 0;
+}
+
+static void
+eth_dev_info(struct rte_eth_dev *dev,
+		struct rte_eth_dev_info *dev_info)
+{
+	struct pmd_internals *internals = dev->data->dev_private;
+	dev_info->pci_dev = RTE_DEV_TO_PCI(dev->device);
+	dev_info->if_index = 0;
+	dev_info->max_mac_addrs = 1;
+	dev_info->max_rx_pktlen = (uint32_t)-1;
+	dev_info->max_rx_queues = internals->max_rx_queues;
+	dev_info->max_tx_queues = internals->max_tx_queues;
+	dev_info->min_rx_bufsize = 0;
+	dev_info->speed_capa = ETH_LINK_SPEED_100G;
+}
+
+static void
+eth_stats_get(struct rte_eth_dev *dev,
+		struct rte_eth_stats *stats)
+{
+	uint16_t i;
+	uint16_t nb_rx = dev->data->nb_rx_queues;
+	uint16_t nb_tx = dev->data->nb_tx_queues;
+	uint64_t rx_total = 0;
+	uint64_t tx_total = 0;
+	uint64_t tx_err_total = 0;
+	uint64_t rx_total_bytes = 0;
+	uint64_t tx_total_bytes = 0;
+	const struct pmd_internals *internals = dev->data->dev_private;
+
+	for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && i < nb_rx; i++) {
+		stats->q_ipackets[i] = internals->rx_queue[i].rx_pkts;
+		stats->q_ibytes[i] = internals->rx_queue[i].rx_bytes;
+		rx_total += stats->q_ipackets[i];
+		rx_total_bytes += stats->q_ibytes[i];
+	}
+
+	for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && i < nb_tx; i++) {
+		stats->q_opackets[i] = internals->tx_queue[i].tx_pkts;
+		stats->q_obytes[i] = internals->tx_queue[i].tx_bytes;
+		stats->q_errors[i] = internals->tx_queue[i].err_pkts;
+		tx_total += stats->q_opackets[i];
+		tx_total_bytes += stats->q_obytes[i];
+		tx_err_total += stats->q_errors[i];
+	}
+
+	stats->ipackets = rx_total;
+	stats->opackets = tx_total;
+	stats->ibytes = rx_total_bytes;
+	stats->obytes = tx_total_bytes;
+	stats->oerrors = tx_err_total;
+}
+
+static void
+eth_stats_reset(struct rte_eth_dev *dev)
+{
+	uint16_t i;
+	uint16_t nb_rx = dev->data->nb_rx_queues;
+	uint16_t nb_tx = dev->data->nb_tx_queues;
+	struct pmd_internals *internals = dev->data->dev_private;
+
+	for (i = 0; i < nb_rx; i++) {
+		internals->rx_queue[i].rx_pkts = 0;
+		internals->rx_queue[i].rx_bytes = 0;
+		internals->rx_queue[i].err_pkts = 0;
+	}
+	for (i = 0; i < nb_tx; i++) {
+		internals->tx_queue[i].tx_pkts = 0;
+		internals->tx_queue[i].tx_bytes = 0;
+		internals->tx_queue[i].err_pkts = 0;
+	}
+}
+
+static void
+eth_rx_queue_release(void *q)
+{
+	struct szedata2_rx_queue *rxq = (struct szedata2_rx_queue *)q;
+	if (rxq->sze != NULL) {
+		szedata_close(rxq->sze);
+		rxq->sze = NULL;
+	}
+}
+
+static void
+eth_tx_queue_release(void *q)
+{
+	struct szedata2_tx_queue *txq = (struct szedata2_tx_queue *)q;
+	if (txq->sze != NULL) {
+		szedata_close(txq->sze);
+		txq->sze = NULL;
+	}
+}
+
+static void
+eth_dev_close(struct rte_eth_dev *dev)
+{
+	uint16_t i;
+	uint16_t nb_rx = dev->data->nb_rx_queues;
+	uint16_t nb_tx = dev->data->nb_tx_queues;
+
+	eth_dev_stop(dev);
+
+	for (i = 0; i < nb_rx; i++) {
+		eth_rx_queue_release(dev->data->rx_queues[i]);
+		dev->data->rx_queues[i] = NULL;
+	}
+	dev->data->nb_rx_queues = 0;
+	for (i = 0; i < nb_tx; i++) {
+		eth_tx_queue_release(dev->data->tx_queues[i]);
+		dev->data->tx_queues[i] = NULL;
+	}
+	dev->data->nb_tx_queues = 0;
+}
+
+static int
+eth_link_update(struct rte_eth_dev *dev,
+		int wait_to_complete __rte_unused)
+{
+	struct rte_eth_link link;
+	struct rte_eth_link *link_ptr = &link;
+	struct rte_eth_link *dev_link = &dev->data->dev_link;
+	struct pmd_internals *internals = (struct pmd_internals *)
+		dev->data->dev_private;
+	volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
+			internals->pci_rsc, SZEDATA2_CGMII_IBUF_BASE_OFF,
+			volatile struct szedata2_cgmii_ibuf *);
+
+	switch (cgmii_link_speed(ibuf)) {
+	case SZEDATA2_LINK_SPEED_10G:
+		link.link_speed = ETH_SPEED_NUM_10G;
+		break;
+	case SZEDATA2_LINK_SPEED_40G:
+		link.link_speed = ETH_SPEED_NUM_40G;
+		break;
+	case SZEDATA2_LINK_SPEED_100G:
+		link.link_speed = ETH_SPEED_NUM_100G;
+		break;
+	default:
+		link.link_speed = ETH_SPEED_NUM_10G;
+		break;
+	}
+
+	/* szedata2 uses only full duplex */
+	link.link_duplex = ETH_LINK_FULL_DUPLEX;
+
+	link.link_status = (cgmii_ibuf_is_enabled(ibuf) &&
+			cgmii_ibuf_is_link_up(ibuf)) ? ETH_LINK_UP : ETH_LINK_DOWN;
+
+	link.link_autoneg = ETH_LINK_SPEED_FIXED;
+
+	rte_atomic64_cmpset((uint64_t *)dev_link, *(uint64_t *)dev_link,
+			*(uint64_t *)link_ptr);
+
+	return 0;
+}
+
+static int
+eth_dev_set_link_up(struct rte_eth_dev *dev)
+{
+	struct pmd_internals *internals = (struct pmd_internals *)
+		dev->data->dev_private;
+	volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
+			internals->pci_rsc, SZEDATA2_CGMII_IBUF_BASE_OFF,
+			volatile struct szedata2_cgmii_ibuf *);
+	volatile struct szedata2_cgmii_obuf *obuf = SZEDATA2_PCI_RESOURCE_PTR(
+			internals->pci_rsc, SZEDATA2_CGMII_OBUF_BASE_OFF,
+			volatile struct szedata2_cgmii_obuf *);
+
+	cgmii_ibuf_enable(ibuf);
+	cgmii_obuf_enable(obuf);
+	return 0;
+}
+
+static int
+eth_dev_set_link_down(struct rte_eth_dev *dev)
+{
+	struct pmd_internals *internals = (struct pmd_internals *)
+		dev->data->dev_private;
+	volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
+			internals->pci_rsc, SZEDATA2_CGMII_IBUF_BASE_OFF,
+			volatile struct szedata2_cgmii_ibuf *);
+	volatile struct szedata2_cgmii_obuf *obuf = SZEDATA2_PCI_RESOURCE_PTR(
+			internals->pci_rsc, SZEDATA2_CGMII_OBUF_BASE_OFF,
+			volatile struct szedata2_cgmii_obuf *);
+
+	cgmii_ibuf_disable(ibuf);
+	cgmii_obuf_disable(obuf);
+	return 0;
+}
+
+static int
+eth_rx_queue_setup(struct rte_eth_dev *dev,
+		uint16_t rx_queue_id,
+		uint16_t nb_rx_desc __rte_unused,
+		unsigned int socket_id __rte_unused,
+		const struct rte_eth_rxconf *rx_conf __rte_unused,
+		struct rte_mempool *mb_pool)
+{
+	struct pmd_internals *internals = dev->data->dev_private;
+	struct szedata2_rx_queue *rxq = &internals->rx_queue[rx_queue_id];
+	int ret;
+	uint32_t rx = 1 << rx_queue_id;
+	uint32_t tx = 0;
+
+	rxq->sze = szedata_open(internals->sze_dev);
+	if (rxq->sze == NULL)
+		return -EINVAL;
+	ret = szedata_subscribe3(rxq->sze, &rx, &tx);
+	if (ret != 0 || rx == 0) {
+		szedata_close(rxq->sze);
+		rxq->sze = NULL;
+		return -EINVAL;
+	}
+	rxq->rx_channel = rx_queue_id;
+	rxq->in_port = dev->data->port_id;
+	rxq->mb_pool = mb_pool;
+	rxq->rx_pkts = 0;
+	rxq->rx_bytes = 0;
+	rxq->err_pkts = 0;
+
+	dev->data->rx_queues[rx_queue_id] = rxq;
+	return 0;
+}
+
+static int
+eth_tx_queue_setup(struct rte_eth_dev *dev,
+		uint16_t tx_queue_id,
+		uint16_t nb_tx_desc __rte_unused,
+		unsigned int socket_id __rte_unused,
+		const struct rte_eth_txconf *tx_conf __rte_unused)
+{
+	struct pmd_internals *internals = dev->data->dev_private;
+	struct szedata2_tx_queue *txq = &internals->tx_queue[tx_queue_id];
+	int ret;
+	uint32_t rx = 0;
+	uint32_t tx = 1 << tx_queue_id;
+
+	txq->sze = szedata_open(internals->sze_dev);
+	if (txq->sze == NULL)
+		return -EINVAL;
+	ret = szedata_subscribe3(txq->sze, &rx, &tx);
+	if (ret != 0 || tx == 0) {
+		szedata_close(txq->sze);
+		txq->sze = NULL;
+		return -EINVAL;
+	}
+	txq->tx_channel = tx_queue_id;
+	txq->tx_pkts = 0;
+	txq->tx_bytes = 0;
+	txq->err_pkts = 0;
+
+	dev->data->tx_queues[tx_queue_id] = txq;
+	return 0;
+}
+
+static void
+eth_mac_addr_set(struct rte_eth_dev *dev __rte_unused,
+		struct ether_addr *mac_addr __rte_unused)
+{
+}
+
+static void
+eth_promiscuous_enable(struct rte_eth_dev *dev)
+{
+	struct pmd_internals *internals = (struct pmd_internals *)
+		dev->data->dev_private;
+	volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
+			internals->pci_rsc, SZEDATA2_CGMII_IBUF_BASE_OFF,
+			volatile struct szedata2_cgmii_ibuf *);
+	cgmii_ibuf_mac_mode_write(ibuf, SZEDATA2_MAC_CHMODE_PROMISC);
+}
+
+static void
+eth_promiscuous_disable(struct rte_eth_dev *dev)
+{
+	struct pmd_internals *internals = (struct pmd_internals *)
+		dev->data->dev_private;
+	volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
+			internals->pci_rsc, SZEDATA2_CGMII_IBUF_BASE_OFF,
+			volatile struct szedata2_cgmii_ibuf *);
+	cgmii_ibuf_mac_mode_write(ibuf, SZEDATA2_MAC_CHMODE_ONLY_VALID);
+}
+
+static void
+eth_allmulticast_enable(struct rte_eth_dev *dev)
+{
+	struct pmd_internals *internals = (struct pmd_internals *)
+		dev->data->dev_private;
+	volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
+			internals->pci_rsc, SZEDATA2_CGMII_IBUF_BASE_OFF,
+			volatile struct szedata2_cgmii_ibuf *);
+	cgmii_ibuf_mac_mode_write(ibuf, SZEDATA2_MAC_CHMODE_ALL_MULTICAST);
+}
+
+static void
+eth_allmulticast_disable(struct rte_eth_dev *dev)
+{
+	struct pmd_internals *internals = (struct pmd_internals *)
+		dev->data->dev_private;
+	volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
+			internals->pci_rsc, SZEDATA2_CGMII_IBUF_BASE_OFF,
+			volatile struct szedata2_cgmii_ibuf *);
+	cgmii_ibuf_mac_mode_write(ibuf, SZEDATA2_MAC_CHMODE_ONLY_VALID);
+}
+
+static const struct eth_dev_ops ops = {
+	.dev_start          = eth_dev_start,
+	.dev_stop           = eth_dev_stop,
+	.dev_set_link_up    = eth_dev_set_link_up,
+	.dev_set_link_down  = eth_dev_set_link_down,
+	.dev_close          = eth_dev_close,
+	.dev_configure      = eth_dev_configure,
+	.dev_infos_get      = eth_dev_info,
+	.promiscuous_enable   = eth_promiscuous_enable,
+	.promiscuous_disable  = eth_promiscuous_disable,
+	.allmulticast_enable  = eth_allmulticast_enable,
+	.allmulticast_disable = eth_allmulticast_disable,
+	.rx_queue_start     = eth_rx_queue_start,
+	.rx_queue_stop      = eth_rx_queue_stop,
+	.tx_queue_start     = eth_tx_queue_start,
+	.tx_queue_stop      = eth_tx_queue_stop,
+	.rx_queue_setup     = eth_rx_queue_setup,
+	.tx_queue_setup     = eth_tx_queue_setup,
+	.rx_queue_release   = eth_rx_queue_release,
+	.tx_queue_release   = eth_tx_queue_release,
+	.link_update        = eth_link_update,
+	.stats_get          = eth_stats_get,
+	.stats_reset        = eth_stats_reset,
+	.mac_addr_set       = eth_mac_addr_set,
+};
+
+/*
+ * This function goes through sysfs and looks for an index of szedata2
+ * device file (/dev/szedataIIX, where X is the index).
+ *
+ * @return
+ *           0 on success
+ *          -1 on error
+ */
+static int
+get_szedata2_index(const struct rte_pci_addr *pcislot_addr, uint32_t *index)
+{
+	DIR *dir;
+	struct dirent *entry;
+	int ret;
+	uint32_t tmp_index;
+	FILE *fd;
+	char pcislot_path[PATH_MAX];
+	uint32_t domain;
+	uint32_t bus;
+	uint32_t devid;
+	uint32_t function;
+
+	dir = opendir("/sys/class/combo");
+	if (dir == NULL)
+		return -1;
+
+	/*
+	 * Iterate through all combosixX directories.
+	 * When the value in /sys/class/combo/combosixX/device/pcislot
+	 * file is the location of the ethernet device dev, "X" is the
+	 * index of the device.
+	 */
+	while ((entry = readdir(dir)) != NULL) {
+		ret = sscanf(entry->d_name, "combosix%u", &tmp_index);
+		if (ret != 1)
+			continue;
+
+		snprintf(pcislot_path, PATH_MAX,
+			"/sys/class/combo/combosix%u/device/pcislot",
+			tmp_index);
+
+		fd = fopen(pcislot_path, "r");
+		if (fd == NULL)
+			continue;
+
+		ret = fscanf(fd, "%4" PRIx16 ":%2" PRIx8 ":%2" PRIx8 ".%" PRIx8,
+				&domain, &bus, &devid, &function);
+		fclose(fd);
+		if (ret != 4)
+			continue;
+
+		if (pcislot_addr->domain == domain &&
+				pcislot_addr->bus == bus &&
+				pcislot_addr->devid == devid &&
+				pcislot_addr->function == function) {
+			*index = tmp_index;
+			closedir(dir);
+			return 0;
+		}
+	}
+
+	closedir(dir);
+	return -1;
+}
+
+static int
+rte_szedata2_eth_dev_init(struct rte_eth_dev *dev)
+{
+	struct rte_eth_dev_data *data = dev->data;
+	struct pmd_internals *internals = (struct pmd_internals *)
+		data->dev_private;
+	struct szedata *szedata_temp;
+	int ret;
+	uint32_t szedata2_index;
+	struct rte_pci_device *pci_dev = RTE_DEV_TO_PCI(dev->device);
+	struct rte_pci_addr *pci_addr = &pci_dev->addr;
+	struct rte_mem_resource *pci_rsc =
+		&pci_dev->mem_resource[PCI_RESOURCE_NUMBER];
+	char rsc_filename[PATH_MAX];
+	void *pci_resource_ptr = NULL;
+	int fd;
+
+	RTE_LOG(INFO, PMD, "Initializing szedata2 device (" PCI_PRI_FMT ")\n",
+			pci_addr->domain, pci_addr->bus, pci_addr->devid,
+			pci_addr->function);
+
+	/* Get index of szedata2 device file and create path to device file */
+	ret = get_szedata2_index(pci_addr, &szedata2_index);
+	if (ret != 0) {
+		RTE_LOG(ERR, PMD, "Failed to get szedata2 device index!\n");
+		return -ENODEV;
+	}
+	snprintf(internals->sze_dev, PATH_MAX, SZEDATA2_DEV_PATH_FMT,
+			szedata2_index);
+
+	RTE_LOG(INFO, PMD, "SZEDATA2 path: %s\n", internals->sze_dev);
+
+	/*
+	 * Get number of available DMA RX and TX channels, which is maximum
+	 * number of queues that can be created and store it in private device
+	 * data structure.
+	 */
+	szedata_temp = szedata_open(internals->sze_dev);
+	if (szedata_temp == NULL) {
+		RTE_LOG(ERR, PMD, "szedata_open(): failed to open %s",
+				internals->sze_dev);
+		return -EINVAL;
+	}
+	internals->max_rx_queues = szedata_ifaces_available(szedata_temp,
+			SZE2_DIR_RX);
+	internals->max_tx_queues = szedata_ifaces_available(szedata_temp,
+			SZE2_DIR_TX);
+	szedata_close(szedata_temp);
+
+	RTE_LOG(INFO, PMD, "Available DMA channels RX: %u TX: %u\n",
+			internals->max_rx_queues, internals->max_tx_queues);
+
+	/* Set rx, tx burst functions */
+	if (data->dev_conf.rxmode.enable_scatter == 1 ||
+		data->scattered_rx == 1) {
+		dev->rx_pkt_burst = eth_szedata2_rx_scattered;
+		data->scattered_rx = 1;
+	} else {
+		dev->rx_pkt_burst = eth_szedata2_rx;
+		data->scattered_rx = 0;
+	}
+	dev->tx_pkt_burst = eth_szedata2_tx;
+
+	/* Set function callbacks for Ethernet API */
+	dev->dev_ops = &ops;
+
+	rte_eth_copy_pci_info(dev, pci_dev);
+
+	/* mmap pci resource0 file to rte_mem_resource structure */
+	if (pci_dev->mem_resource[PCI_RESOURCE_NUMBER].phys_addr ==
+			0) {
+		RTE_LOG(ERR, PMD, "Missing resource%u file\n",
+				PCI_RESOURCE_NUMBER);
+		return -EINVAL;
+	}
+	snprintf(rsc_filename, PATH_MAX,
+		"%s/" PCI_PRI_FMT "/resource%u", pci_get_sysfs_path(),
+		pci_addr->domain, pci_addr->bus,
+		pci_addr->devid, pci_addr->function, PCI_RESOURCE_NUMBER);
+	fd = open(rsc_filename, O_RDWR);
+	if (fd < 0) {
+		RTE_LOG(ERR, PMD, "Could not open file %s\n", rsc_filename);
+		return -EINVAL;
+	}
+
+	pci_resource_ptr = mmap(0,
+			pci_dev->mem_resource[PCI_RESOURCE_NUMBER].len,
+			PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+	close(fd);
+	if (pci_resource_ptr == NULL) {
+		RTE_LOG(ERR, PMD, "Could not mmap file %s (fd = %d)\n",
+				rsc_filename, fd);
+		return -EINVAL;
+	}
+	pci_dev->mem_resource[PCI_RESOURCE_NUMBER].addr = pci_resource_ptr;
+	internals->pci_rsc = pci_rsc;
+
+	RTE_LOG(DEBUG, PMD, "resource%u phys_addr = 0x%llx len = %llu "
+			"virt addr = %llx\n", PCI_RESOURCE_NUMBER,
+			(unsigned long long)pci_rsc->phys_addr,
+			(unsigned long long)pci_rsc->len,
+			(unsigned long long)pci_rsc->addr);
+
+	/* Get link state */
+	eth_link_update(dev, 0);
+
+	/* Allocate space for one mac address */
+	data->mac_addrs = rte_zmalloc(data->name, sizeof(struct ether_addr),
+			RTE_CACHE_LINE_SIZE);
+	if (data->mac_addrs == NULL) {
+		RTE_LOG(ERR, PMD, "Could not alloc space for MAC address!\n");
+		munmap(pci_dev->mem_resource[PCI_RESOURCE_NUMBER].addr,
+		       pci_dev->mem_resource[PCI_RESOURCE_NUMBER].len);
+		return -EINVAL;
+	}
+
+	ether_addr_copy(&eth_addr, data->mac_addrs);
+
+	/* At initial state COMBO card is in promiscuous mode so disable it */
+	eth_promiscuous_disable(dev);
+
+	RTE_LOG(INFO, PMD, "szedata2 device ("
+			PCI_PRI_FMT ") successfully initialized\n",
+			pci_addr->domain, pci_addr->bus, pci_addr->devid,
+			pci_addr->function);
+
+	return 0;
+}
+
+static int
+rte_szedata2_eth_dev_uninit(struct rte_eth_dev *dev)
+{
+	struct rte_pci_device *pci_dev = RTE_DEV_TO_PCI(dev->device);
+	struct rte_pci_addr *pci_addr = &pci_dev->addr;
+
+	rte_free(dev->data->mac_addrs);
+	dev->data->mac_addrs = NULL;
+	munmap(pci_dev->mem_resource[PCI_RESOURCE_NUMBER].addr,
+	       pci_dev->mem_resource[PCI_RESOURCE_NUMBER].len);
+
+	RTE_LOG(INFO, PMD, "szedata2 device ("
+			PCI_PRI_FMT ") successfully uninitialized\n",
+			pci_addr->domain, pci_addr->bus, pci_addr->devid,
+			pci_addr->function);
+
+	return 0;
+}
+
+static const struct rte_pci_id rte_szedata2_pci_id_table[] = {
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
+				PCI_DEVICE_ID_NETCOPE_COMBO80G)
+	},
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
+				PCI_DEVICE_ID_NETCOPE_COMBO100G)
+	},
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
+				PCI_DEVICE_ID_NETCOPE_COMBO100G2)
+	},
+	{
+		.vendor_id = 0,
+	}
+};
+
+static int szedata2_eth_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
+	struct rte_pci_device *pci_dev)
+{
+	return rte_eth_dev_pci_generic_probe(pci_dev,
+		sizeof(struct pmd_internals), rte_szedata2_eth_dev_init);
+}
+
+static int szedata2_eth_pci_remove(struct rte_pci_device *pci_dev)
+{
+	return rte_eth_dev_pci_generic_remove(pci_dev,
+		rte_szedata2_eth_dev_uninit);
+}
+
+static struct rte_pci_driver szedata2_eth_driver = {
+	.id_table = rte_szedata2_pci_id_table,
+	.probe = szedata2_eth_pci_probe,
+	.remove = szedata2_eth_pci_remove,
+};
+
+RTE_PMD_REGISTER_PCI(RTE_SZEDATA2_DRIVER_NAME, szedata2_eth_driver);
+RTE_PMD_REGISTER_PCI_TABLE(RTE_SZEDATA2_DRIVER_NAME, rte_szedata2_pci_id_table);
+RTE_PMD_REGISTER_KMOD_DEP(RTE_SZEDATA2_DRIVER_NAME,
+	"* combo6core & combov3 & szedata2 & szedata2_cv3");
diff --git a/src/seastar/dpdk/drivers/net/szedata2/rte_eth_szedata2.h b/src/seastar/dpdk/drivers/net/szedata2/rte_eth_szedata2.h
new file mode 100644
index 00000000..afe8a383
--- /dev/null
+++ b/src/seastar/dpdk/drivers/net/szedata2/rte_eth_szedata2.h
@@ -0,0 +1,450 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) 2015 - 2016 CESNET
+ *   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 CESNET 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 RTE_PMD_SZEDATA2_H_
+#define RTE_PMD_SZEDATA2_H_
+
+#include <stdbool.h>
+
+#include <rte_byteorder.h>
+
+/* PCI Vendor ID */
+#define PCI_VENDOR_ID_NETCOPE 0x1b26
+
+/* PCI Device IDs */
+#define PCI_DEVICE_ID_NETCOPE_COMBO80G 0xcb80
+#define PCI_DEVICE_ID_NETCOPE_COMBO100G 0xc1c1
+#define PCI_DEVICE_ID_NETCOPE_COMBO100G2 0xc2c1
+
+/* number of PCI resource used by COMBO card */
+#define PCI_RESOURCE_NUMBER 0
+
+/* szedata2_packet header length == 4 bytes == 2B segment size + 2B hw size */
+#define RTE_SZE2_PACKET_HEADER_SIZE 4
+
+#define RTE_SZE2_MMIO_MAX 10
+
+/*!
+ * Round 'what' to the nearest larger (or equal) multiple of '8'
+ * (szedata2 packet is aligned to 8 bytes)
+ */
+#define RTE_SZE2_ALIGN8(what) (((what) + ((8) - 1)) & (~((8) - 1)))
+
+/*! main handle structure */
+struct szedata {
+	int fd;
+	struct sze2_instance_info *info;
+	uint32_t *write_size;
+	void *space[RTE_SZE2_MMIO_MAX];
+	struct szedata_lock lock[2][2];
+
+	__u32 *rx_asize, *tx_asize;
+
+	/* szedata_read_next variables - to keep context (ct) */
+
+	/*
+	 * rx
+	 */
+	/** initial sze lock ptr */
+	const struct szedata_lock   *ct_rx_lck_orig;
+	/** current sze lock ptr (initial or next) */
+	const struct szedata_lock   *ct_rx_lck;
+	/** remaining bytes (not read) within current lock */
+	unsigned int                ct_rx_rem_bytes;
+	/** current pointer to locked memory */
+	unsigned char               *ct_rx_cur_ptr;
+	/**
+	 * allocated buffer to store RX packet if it was split
+	 * into 2 buffers
+	 */
+	unsigned char               *ct_rx_buffer;
+	/** registered function to provide filtering based on hwdata */
+	int (*ct_rx_filter)(u_int16_t hwdata_len, u_char *hwdata);
+
+	/*
+	 * tx
+	 */
+	/**
+	 * buffer for tx - packet is prepared here
+	 * (in future for burst write)
+	 */
+	unsigned char               *ct_tx_buffer;
+	/** initial sze TX lock ptrs - number according to TX interfaces */
+	const struct szedata_lock   **ct_tx_lck_orig;
+	/** current sze TX lock ptrs - number according to TX interfaces */
+	const struct szedata_lock   **ct_tx_lck;
+	/** already written bytes in both locks */
+	unsigned int                *ct_tx_written_bytes;
+	/** remaining bytes (not written) within current lock */
+	unsigned int                *ct_tx_rem_bytes;
+	/** current pointers to locked memory */
+	unsigned char               **ct_tx_cur_ptr;
+	/** NUMA node closest to PCIe device, or -1 */
+	int                         numa_node;
+};
+
+/*
+ * @return Byte from PCI resource at offset "offset".
+ */
+static inline uint8_t
+pci_resource_read8(struct rte_mem_resource *rsc, uint32_t offset)
+{
+	return *((uint8_t *)((uint8_t *)rsc->addr + offset));
+}
+
+/*
+ * @return Two bytes from PCI resource starting at offset "offset".
+ */
+static inline uint16_t
+pci_resource_read16(struct rte_mem_resource *rsc, uint32_t offset)
+{
+	return rte_le_to_cpu_16(*((uint16_t *)((uint8_t *)rsc->addr +
+					       offset)));
+}
+
+/*
+ * @return Four bytes from PCI resource starting at offset "offset".
+ */
+static inline uint32_t
+pci_resource_read32(struct rte_mem_resource *rsc, uint32_t offset)
+{
+	return rte_le_to_cpu_32(*((uint32_t *)((uint8_t *)rsc->addr +
+					       offset)));
+}
+
+/*
+ * @return Eight bytes from PCI resource starting at offset "offset".
+ */
+static inline uint64_t
+pci_resource_read64(struct rte_mem_resource *rsc, uint32_t offset)
+{
+	return rte_le_to_cpu_64(*((uint64_t *)((uint8_t *)rsc->addr +
+					       offset)));
+}
+
+/*
+ * Write one byte to PCI resource address space at offset "offset".
+ */
+static inline void
+pci_resource_write8(struct rte_mem_resource *rsc, uint32_t offset, uint8_t val)
+{
+	*((uint8_t *)((uint8_t *)rsc->addr + offset)) = val;
+}
+
+/*
+ * Write two bytes to PCI resource address space at offset "offset".
+ */
+static inline void
+pci_resource_write16(struct rte_mem_resource *rsc, uint32_t offset,
+		     uint16_t val)
+{
+	*((uint16_t *)((uint8_t *)rsc->addr + offset)) = rte_cpu_to_le_16(val);
+}
+
+/*
+ * Write four bytes to PCI resource address space at offset "offset".
+ */
+static inline void
+pci_resource_write32(struct rte_mem_resource *rsc, uint32_t offset,
+		     uint32_t val)
+{
+	*((uint32_t *)((uint8_t *)rsc->addr + offset)) = rte_cpu_to_le_32(val);
+}
+
+/*
+ * Write eight bytes to PCI resource address space at offset "offset".
+ */
+static inline void
+pci_resource_write64(struct rte_mem_resource *rsc, uint32_t offset,
+		     uint64_t val)
+{
+	*((uint64_t *)((uint8_t *)rsc->addr + offset)) = rte_cpu_to_le_64(val);
+}
+
+#define SZEDATA2_PCI_RESOURCE_PTR(rsc, offset, type) \
+	((type)(((uint8_t *)(rsc)->addr) + (offset)))
+
+enum szedata2_link_speed {
+	SZEDATA2_LINK_SPEED_DEFAULT = 0,
+	SZEDATA2_LINK_SPEED_10G,
+	SZEDATA2_LINK_SPEED_40G,
+	SZEDATA2_LINK_SPEED_100G,
+};
+
+enum szedata2_mac_check_mode {
+	SZEDATA2_MAC_CHMODE_PROMISC       = 0x0,
+	SZEDATA2_MAC_CHMODE_ONLY_VALID    = 0x1,
+	SZEDATA2_MAC_CHMODE_ALL_BROADCAST = 0x2,
+	SZEDATA2_MAC_CHMODE_ALL_MULTICAST = 0x3,
+};
+
+/*
+ * Structure describes CGMII IBUF address space
+ */
+struct szedata2_cgmii_ibuf {
+	/** Total Received Frames Counter low part */
+	uint32_t trfcl;
+	/** Correct Frames Counter low part */
+	uint32_t cfcl;
+	/** Discarded Frames Counter low part */
+	uint32_t dfcl;
+	/** Counter of frames discarded due to buffer overflow low part */
+	uint32_t bodfcl;
+	/** Total Received Frames Counter high part */
+	uint32_t trfch;
+	/** Correct Frames Counter high part */
+	uint32_t cfch;
+	/** Discarded Frames Counter high part */
+	uint32_t dfch;
+	/** Counter of frames discarded due to buffer overflow high part */
+	uint32_t bodfch;
+	/** IBUF enable register */
+	uint32_t ibuf_en;
+	/** Error mask register */
+	uint32_t err_mask;
+	/** IBUF status register */
+	uint32_t ibuf_st;
+	/** IBUF command register */
+	uint32_t ibuf_cmd;
+	/** Minimum frame length allowed */
+	uint32_t mfla;
+	/** Frame MTU */
+	uint32_t mtu;
+	/** MAC address check mode */
+	uint32_t mac_chmode;
+	/** Octets Received OK Counter low part */
+	uint32_t orocl;
+	/** Octets Received OK Counter high part */
+	uint32_t oroch;
+} __rte_packed;
+
+/* Offset of CGMII IBUF memory for MAC addresses */
+#define SZEDATA2_CGMII_IBUF_MAC_MEM_OFF 0x80
+
+/*
+ * @return
+ *     true if IBUF is enabled
+ *     false if IBUF is disabled
+ */
+static inline bool
+cgmii_ibuf_is_enabled(volatile struct szedata2_cgmii_ibuf *ibuf)
+{
+	return ((rte_le_to_cpu_32(ibuf->ibuf_en) & 0x1) != 0) ? true : false;
+}
+
+/*
+ * Enables IBUF.
+ */
+static inline void
+cgmii_ibuf_enable(volatile struct szedata2_cgmii_ibuf *ibuf)
+{
+	ibuf->ibuf_en =
+		rte_cpu_to_le_32(rte_le_to_cpu_32(ibuf->ibuf_en) | 0x1);
+}
+
+/*
+ * Disables IBUF.
+ */
+static inline void
+cgmii_ibuf_disable(volatile struct szedata2_cgmii_ibuf *ibuf)
+{
+	ibuf->ibuf_en =
+		rte_cpu_to_le_32(rte_le_to_cpu_32(ibuf->ibuf_en) & ~0x1);
+}
+
+/*
+ * @return
+ *     true if ibuf link is up
+ *     false if ibuf link is down
+ */
+static inline bool
+cgmii_ibuf_is_link_up(volatile struct szedata2_cgmii_ibuf *ibuf)
+{
+	return ((rte_le_to_cpu_32(ibuf->ibuf_st) & 0x80) != 0) ? true : false;
+}
+
+/*
+ * @return
+ *     MAC address check mode
+ */
+static inline enum szedata2_mac_check_mode
+cgmii_ibuf_mac_mode_read(volatile struct szedata2_cgmii_ibuf *ibuf)
+{
+	switch (rte_le_to_cpu_32(ibuf->mac_chmode) & 0x3) {
+	case 0x0:
+		return SZEDATA2_MAC_CHMODE_PROMISC;
+	case 0x1:
+		return SZEDATA2_MAC_CHMODE_ONLY_VALID;
+	case 0x2:
+		return SZEDATA2_MAC_CHMODE_ALL_BROADCAST;
+	case 0x3:
+		return SZEDATA2_MAC_CHMODE_ALL_MULTICAST;
+	default:
+		return SZEDATA2_MAC_CHMODE_PROMISC;
+	}
+}
+
+/*
+ * Writes "mode" in MAC address check mode register.
+ */
+static inline void
+cgmii_ibuf_mac_mode_write(volatile struct szedata2_cgmii_ibuf *ibuf,
+		enum szedata2_mac_check_mode mode)
+{
+	ibuf->mac_chmode = rte_cpu_to_le_32(
+			(rte_le_to_cpu_32(ibuf->mac_chmode) & ~0x3) | mode);
+}
+
+/*
+ * Structure describes CGMII OBUF address space
+ */
+struct szedata2_cgmii_obuf {
+	/** Total Sent Frames Counter low part */
+	uint32_t tsfcl;
+	/** Octets Sent Counter low part */
+	uint32_t oscl;
+	/** Total Discarded Frames Counter low part */
+	uint32_t tdfcl;
+	/** reserved */
+	uint32_t reserved1;
+	/** Total Sent Frames Counter high part */
+	uint32_t tsfch;
+	/** Octets Sent Counter high part */
+	uint32_t osch;
+	/** Total Discarded Frames Counter high part */
+	uint32_t tdfch;
+	/** reserved */
+	uint32_t reserved2;
+	/** OBUF enable register */
+	uint32_t obuf_en;
+	/** reserved */
+	uint64_t reserved3;
+	/** OBUF control register */
+	uint32_t ctrl;
+	/** OBUF status register */
+	uint32_t obuf_st;
+} __rte_packed;
+
+/*
+ * @return
+ *     true if OBUF is enabled
+ *     false if OBUF is disabled
+ */
+static inline bool
+cgmii_obuf_is_enabled(volatile struct szedata2_cgmii_obuf *obuf)
+{
+	return ((rte_le_to_cpu_32(obuf->obuf_en) & 0x1) != 0) ? true : false;
+}
+
+/*
+ * Enables OBUF.
+ */
+static inline void
+cgmii_obuf_enable(volatile struct szedata2_cgmii_obuf *obuf)
+{
+	obuf->obuf_en =
+		rte_cpu_to_le_32(rte_le_to_cpu_32(obuf->obuf_en) | 0x1);
+}
+
+/*
+ * Disables OBUF.
+ */
+static inline void
+cgmii_obuf_disable(volatile struct szedata2_cgmii_obuf *obuf)
+{
+	obuf->obuf_en =
+		rte_cpu_to_le_32(rte_le_to_cpu_32(obuf->obuf_en) & ~0x1);
+}
+
+/*
+ * Function takes value from IBUF status register. Values in IBUF and OBUF
+ * should be same.
+ *
+ * @return Link speed constant.
+ */
+static inline enum szedata2_link_speed
+cgmii_link_speed(volatile struct szedata2_cgmii_ibuf *ibuf)
+{
+	uint32_t speed = (rte_le_to_cpu_32(ibuf->ibuf_st) & 0x70) >> 4;
+	switch (speed) {
+	case 0x03:
+		return SZEDATA2_LINK_SPEED_10G;
+	case 0x04:
+		return SZEDATA2_LINK_SPEED_40G;
+	case 0x05:
+		return SZEDATA2_LINK_SPEED_100G;
+	default:
+		return SZEDATA2_LINK_SPEED_DEFAULT;
+	}
+}
+
+/*
+ * IBUFs and OBUFs can generally be located at different offsets in different
+ * firmwares.
+ * This part defines base offsets of IBUFs and OBUFs through various firmwares.
+ * Currently one firmware type is supported.
+ * Type of firmware is set through configuration option
+ * CONFIG_RTE_LIBRTE_PMD_SZEDATA_AS.
+ * Possible values are:
+ * 0 - for firmwares:
+ *     NIC_100G1_LR4
+ *     HANIC_100G1_LR4
+ *     HANIC_100G1_SR10
+ */
+#if !defined(RTE_LIBRTE_PMD_SZEDATA2_AS)
+#error "RTE_LIBRTE_PMD_SZEDATA2_AS has to be defined"
+#elif RTE_LIBRTE_PMD_SZEDATA2_AS == 0
+
+/*
+ * CGMII IBUF offset from the beginning of PCI resource address space.
+ */
+#define SZEDATA2_CGMII_IBUF_BASE_OFF 0x8000
+/*
+ * Size of CGMII IBUF.
+ */
+#define SZEDATA2_CGMII_IBUF_SIZE 0x200
+
+/*
+ * GCMII OBUF offset from the beginning of PCI resource address space.
+ */
+#define SZEDATA2_CGMII_OBUF_BASE_OFF 0x9000
+/*
+ * Size of CGMII OBUF.
+ */
+#define SZEDATA2_CGMII_OBUF_SIZE 0x100
+
+#else
+#error "RTE_LIBRTE_PMD_SZEDATA2_AS has wrong value, see comments in config file"
+#endif
+
+#endif
diff --git a/src/seastar/dpdk/drivers/net/szedata2/rte_pmd_szedata2_version.map b/src/seastar/dpdk/drivers/net/szedata2/rte_pmd_szedata2_version.map
new file mode 100644
index 00000000..ad607bbe
--- /dev/null
+++ b/src/seastar/dpdk/drivers/net/szedata2/rte_pmd_szedata2_version.map
@@ -0,0 +1,3 @@
+DPDK_2.2 {
+	local: *;
+};