[CATERPILLAR,v4,2/2] linux-gen: add i40e mediated device driver

Message ID 1515168023-29307-3-git-send-email-odpbot@yandex.ru
State Superseded
Headers show
Series
  • Caterpillar mdev i40e
Related show

Commit Message

Github ODP bot Jan. 5, 2018, 4 p.m.
From: Mykyta Iziumtsev <mykyta.iziumtsev@linaro.org>


Signed-off-by: Mykyta Iziumtsev <mykyta.iziumtsev@linaro.org>

---
/** Email created from pull request 380 (MykytaI:caterpillar_mdev_i40e)
 ** https://github.com/Linaro/odp/pull/380
 ** Patch: https://github.com/Linaro/odp/pull/380.patch
 ** Base sha: 4d17f8ae64aba0e6f24877be30f86ae5880cef7e
 ** Merge commit sha: 17cb1d92917318ccb5863f679eacac7642b6ff9b
 **/
 platform/linux-generic/Makefile.am       |   1 +
 platform/linux-generic/pktio/mdev/i40e.c | 641 +++++++++++++++++++++++++++++++
 platform/linux-generic/pktio/subsystem.c |   6 +
 3 files changed, 648 insertions(+)
 create mode 100644 platform/linux-generic/pktio/mdev/i40e.c

Patch

diff --git a/platform/linux-generic/Makefile.am b/platform/linux-generic/Makefile.am
index 9a6a7cc15..85f902115 100644
--- a/platform/linux-generic/Makefile.am
+++ b/platform/linux-generic/Makefile.am
@@ -258,6 +258,7 @@  __LIB__libodp_linux_la_SOURCES = \
 			   pktio/tap.c \
 			   pktio/ring.c \
 			   pktio/mdev.c \
+			   pktio/mdev/i40e.c \
 			   pool/generic.c \
 			   pool/subsystem.c \
 			   odp_pkt_queue.c \
diff --git a/platform/linux-generic/pktio/mdev/i40e.c b/platform/linux-generic/pktio/mdev/i40e.c
new file mode 100644
index 000000000..5797e9a5e
--- /dev/null
+++ b/platform/linux-generic/pktio/mdev/i40e.c
@@ -0,0 +1,641 @@ 
+/* Copyright (c) 2018, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ */
+
+#include "config.h"
+
+#ifdef ODP_MDEV
+
+#include <odp_posix_extensions.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <linux/types.h>
+
+#include <odp/api/hints.h>
+#include <odp/api/plat/packet_inlines.h>
+#include <odp/api/packet.h>
+
+#include <odp/drv/hints.h>
+#include <odp/drv/mmio.h>
+
+#include <odp_packet_io_internal.h>
+
+#include <protocols/eth.h>
+
+#include <uapi/net_mdev.h>
+#include <pktio/common.h>
+#include <pktio/mdev.h>
+#include <pktio/ethtool.h>
+#include <pktio/sysfs.h>
+
+#define MODULE_NAME "i40e"
+
+#define I40E_TX_BUF_SIZE 2048U
+#define I40E_RX_BUF_SIZE 2048U
+
+#define I40E_TX_PACKET_LEN_MIN 17
+
+/* RX queue definitions */
+#define I40E_RX_QUEUE_NUM_MAX 32
+
+/** RX descriptor */
+typedef struct {
+	odp_u64le_t addr;
+#define I40E_RXD_QW1_LEN_S 38
+#define I40E_RXD_QW1_LEN_M (0x3FFFULL << I40E_RXD_QW1_LEN_S)
+	odp_u64le_t status_error_len;
+	odp_u64le_t reserved[2];
+} i40e_rx_desc_t;
+
+/** RX queue data */
+typedef struct {
+	i40e_rx_desc_t *rx_descs;	/**< RX queue base */
+	odp_u32le_t *doorbell;		/**< RX queue doorbell */
+
+	uint16_t rx_queue_len;		/**< Number of RX desc entries */
+	uint16_t cidx;			/**< Next RX desc to handle */
+
+	mdev_dma_area_t rx_data;	/**< RX packet payload area */
+
+	odp_ticketlock_t lock;		/**< RX queue lock */
+} i40e_rx_queue_t /* ODP_ALIGNED_CACHE */;
+
+/* TX queue definitions */
+#define I40E_TX_QUEUE_NUM_MAX 32
+
+typedef struct {
+	odp_u64le_t addr;
+
+#define I40E_TXD_DTYPE_DATA	0UL
+
+#define I40E_TXD_CMD_EOP	0x0001UL
+#define I40E_TXD_CMD_RS		0x0002UL
+#define I40E_TXD_CMD_ICRC	0x0004UL
+
+#define I40E_TXD_QW1_CMD_S	4
+#define I40E_TXD_QW1_L2TAG1_S	48
+#define I40E_TXD_QW1_OFFSET_S	16
+#define I40E_TXD_QW1_LEN_S	34
+	odp_u64le_t cmd_type_offset_len;
+} i40e_tx_desc_t;
+
+/** TX queue data */
+typedef struct {
+	i40e_tx_desc_t *tx_descs;	/**< TX queue base */
+	odp_u32le_t *doorbell;		/**< TX queue doorbell */
+
+	uint16_t tx_queue_len;		/**< Number of TX desc entries */
+	uint16_t pidx;			/**< Next TX desc to insert */
+
+	odp_u32le_t *cidx;		/**< Last TX desc processed by HW */
+
+	mdev_dma_area_t tx_data;	/**< TX packet payload area */
+
+	odp_ticketlock_t lock;		/**< TX queue lock */
+} i40e_tx_queue_t /* ODP_ALIGNED_CACHE */;
+
+/** Packet socket using mediated i40e device */
+typedef struct {
+	/** RX queue hot data */
+	i40e_rx_queue_t rx_queues[I40E_RX_QUEUE_NUM_MAX];
+
+	/** TX queue hot data */
+	i40e_tx_queue_t tx_queues[I40E_TX_QUEUE_NUM_MAX];
+
+	odp_pool_t pool;		/**< pool to alloc packets from */
+
+	odp_bool_t lockless_rx;		/**< no locking for RX */
+	odp_bool_t lockless_tx;		/**< no locking for TX */
+
+	odp_pktio_capability_t capa;	/**< interface capabilities */
+
+	uint8_t *mmio;			/**< MMIO region */
+
+	int sockfd;			/**< control socket */
+
+	mdev_device_t mdev;		/**< Common mdev data */
+} pktio_ops_i40e_data_t;
+
+static void i40e_rx_refill(i40e_rx_queue_t *rxq, uint16_t from, uint16_t num);
+static void i40e_wait_link_up(pktio_entry_t *pktio_entry);
+static int i40e_close(pktio_entry_t *pktio_entry);
+
+static int i40e_mmio_register(pktio_ops_i40e_data_t *pkt_i40e,
+			      uint64_t offset, uint64_t size)
+{
+	ODP_ASSERT(pkt_i40e->mmio == NULL);
+
+	pkt_i40e->mmio = mdev_region_mmap(&pkt_i40e->mdev, offset, size);
+	if (pkt_i40e->mmio == MAP_FAILED) {
+		ODP_ERR("Cannot mmap MMIO\n");
+		return -1;
+	}
+
+	ODP_DBG("Register MMIO region: 0x%llx@%016llx\n", size, offset);
+
+	return 0;
+}
+
+static int i40e_rx_queue_register(pktio_ops_i40e_data_t *pkt_i40e,
+				  uint64_t offset, uint64_t size)
+{
+	uint16_t rxq_idx = pkt_i40e->capa.max_input_queues++;
+	i40e_rx_queue_t *rxq = &pkt_i40e->rx_queues[rxq_idx];
+	uint64_t doorbell_offset;
+	struct ethtool_ringparam ering;
+	int ret;
+
+	ODP_ASSERT(rxq_idx < ARRAY_SIZE(pkt_i40e->rx_queues));
+
+	odp_ticketlock_init(&rxq->lock);
+
+	ret = ethtool_ringparam_get_fd(pkt_i40e->sockfd,
+				       pkt_i40e->mdev.if_name, &ering);
+	if (ret) {
+		ODP_ERR("Cannot get queue length\n");
+		return -1;
+	}
+	rxq->rx_queue_len = ering.rx_pending;
+
+	ret = sysfs_attr_u64_get(&doorbell_offset,
+				 "/sys/class/net/%s"
+				 "/queues/rx-%u/i40e/doorbell_offset",
+				 pkt_i40e->mdev.if_name, rxq_idx);
+	if (ret) {
+		ODP_ERR("Cannot get %s rx-%u doorbell_offset\n",
+			pkt_i40e->mdev.if_name, rxq_idx);
+		return -1;
+	}
+	rxq->doorbell = (odp_u32le_t *)(pkt_i40e->mmio + doorbell_offset);
+
+	ODP_ASSERT(rxq->rx_queue_len * sizeof(*rxq->rx_descs) <= size);
+
+	rxq->rx_descs = mdev_region_mmap(&pkt_i40e->mdev, offset, size);
+	if (rxq->rx_descs == MAP_FAILED) {
+		ODP_ERR("Cannot mmap RX queue\n");
+		return -1;
+	}
+
+	rxq->rx_data.size = rxq->rx_queue_len * I40E_RX_BUF_SIZE;
+	ret = mdev_dma_area_alloc(&pkt_i40e->mdev, &rxq->rx_data);
+	if (ret) {
+		ODP_ERR("Cannot allocate RX queue DMA area\n");
+		return -1;
+	}
+
+	/* Need 1 desc gap to keep tail from touching head */
+	i40e_rx_refill(rxq, 0, rxq->rx_queue_len - 1);
+
+	ODP_DBG("Register RX queue region: 0x%llx@%016llx\n", size, offset);
+	ODP_DBG("    RX descriptors: %u\n", rxq->rx_queue_len);
+
+	return 0;
+}
+
+static int i40e_tx_queue_register(pktio_ops_i40e_data_t *pkt_i40e,
+				  uint64_t offset, uint64_t size)
+{
+	uint16_t txq_idx = pkt_i40e->capa.max_output_queues++;
+	i40e_tx_queue_t *txq = &pkt_i40e->tx_queues[txq_idx];
+	uint64_t doorbell_offset;
+	struct ethtool_ringparam ering;
+	int ret;
+
+	ODP_ASSERT(txq_idx < ARRAY_SIZE(pkt_i40e->tx_queues));
+
+	odp_ticketlock_init(&txq->lock);
+
+	ret = ethtool_ringparam_get_fd(pkt_i40e->sockfd,
+				       pkt_i40e->mdev.if_name, &ering);
+	if (ret) {
+		ODP_ERR("Cannot get queue length\n");
+		return -1;
+	}
+	txq->tx_queue_len = ering.tx_pending;
+
+	ret = sysfs_attr_u64_get(&doorbell_offset,
+				 "/sys/class/net/%s"
+				 "/queues/tx-%u/i40e/doorbell_offset",
+				 pkt_i40e->mdev.if_name, txq_idx);
+	if (ret) {
+		ODP_ERR("Cannot get %s tx-%u doorbell_offset\n",
+			pkt_i40e->mdev.if_name, txq_idx);
+		return -1;
+	}
+	txq->doorbell = (odp_u32le_t *)(pkt_i40e->mmio + doorbell_offset);
+
+	ODP_ASSERT(txq->tx_queue_len * sizeof(*txq->tx_descs) +
+		   sizeof(*txq->cidx) <= size);
+
+	txq->tx_descs = mdev_region_mmap(&pkt_i40e->mdev, offset, size);
+	if (txq->tx_descs == MAP_FAILED) {
+		ODP_ERR("Cannot mmap TX queue\n");
+		return -1;
+	}
+
+	txq->cidx = (odp_u32le_t *)(txq->tx_descs + txq->tx_queue_len);
+
+	txq->tx_data.size = txq->tx_queue_len * I40E_TX_BUF_SIZE;
+	ret = mdev_dma_area_alloc(&pkt_i40e->mdev, &txq->tx_data);
+	if (ret) {
+		ODP_ERR("Cannot allocate TX queue DMA area\n");
+		return -1;
+	}
+
+	ODP_DBG("Register TX queue region: 0x%llx@%016llx\n", size, offset);
+	ODP_DBG("    TX descriptors: %u\n", txq->tx_queue_len);
+
+	return 0;
+}
+
+static int i40e_region_info_cb(mdev_device_t *mdev,
+			       struct vfio_region_info *region_info)
+{
+	pktio_ops_i40e_data_t *pkt_i40e =
+	    odp_container_of(mdev, pktio_ops_i40e_data_t, mdev);
+	mdev_region_class_t class_info;
+
+	if (vfio_get_region_cap_type(region_info, &class_info) < 0) {
+		ODP_ERR("Cannot find class_info in region %u\n",
+			region_info->index);
+		return -1;
+	}
+
+	switch (class_info.type) {
+	case VFIO_NET_MMIO:
+		return i40e_mmio_register(pkt_i40e,
+					   region_info->offset,
+					   region_info->size);
+
+	case VFIO_NET_DESCRIPTORS:
+		if (class_info.subtype == VFIO_NET_MDEV_RX)
+			return i40e_rx_queue_register(pkt_i40e,
+						       region_info->offset,
+						       region_info->size);
+		if (class_info.subtype == VFIO_NET_MDEV_TX)
+			return i40e_tx_queue_register(pkt_i40e,
+						       region_info->offset,
+						       region_info->size);
+		/* fallthrough */
+
+	default:
+		ODP_ERR("Unexpected region %u (class %u:%u)\n",
+			region_info->index, class_info.type,
+			class_info.subtype);
+		return -1;
+	}
+}
+
+static int i40e_open(odp_pktio_t id ODP_UNUSED,
+		     pktio_entry_t *pktio_entry,
+		     const char *resource, odp_pool_t pool)
+{
+	pktio_ops_i40e_data_t *pkt_i40e;
+	int ret;
+
+	ODP_ASSERT(pool != ODP_POOL_INVALID);
+
+	if (strncmp(resource, NET_MDEV_PREFIX, strlen(NET_MDEV_PREFIX)))
+		return -1;
+
+	ODP_DBG("%s: probing resource %s\n", MODULE_NAME, resource);
+
+	pkt_i40e = ODP_OPS_DATA_ALLOC(sizeof(*pkt_i40e));
+	if (odp_unlikely(pkt_i40e == NULL)) {
+		ODP_ERR("Failed to allocate pktio_ops_i40e_data_t struct");
+		return -1;
+	}
+	pktio_entry->s.ops_data = pkt_i40e;
+
+	memset(pkt_i40e, 0, sizeof(*pkt_i40e));
+
+	pkt_i40e->sockfd = socket(AF_INET, SOCK_DGRAM, 0);
+	if (pkt_i40e->sockfd == -1) {
+		ODP_ERR("Cannot get device control socket\n");
+		goto out;
+	}
+
+	ret =
+	    mdev_device_create(&pkt_i40e->mdev, MODULE_NAME,
+			       resource + strlen(NET_MDEV_PREFIX),
+			       i40e_region_info_cb);
+	if (ret)
+		goto out;
+
+	pkt_i40e->pool = pool;
+
+	i40e_wait_link_up(pktio_entry);
+
+	ODP_DBG("%s: open %s is successful\n", MODULE_NAME,
+		pkt_i40e->mdev.if_name);
+
+	return 0;
+
+out:
+	i40e_close(pktio_entry);
+	return -1;
+}
+
+static int i40e_close(pktio_entry_t *pktio_entry)
+{
+	pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data;
+
+	ODP_DBG("%s: close %s\n", MODULE_NAME, pkt_i40e->mdev.if_name);
+
+	mdev_device_destroy(&pkt_i40e->mdev);
+
+	for (uint16_t i = 0; i < pkt_i40e->capa.max_input_queues; i++) {
+		i40e_rx_queue_t *rxq = &pkt_i40e->rx_queues[i];
+
+		if (rxq->rx_data.size)
+			mdev_dma_area_free(&pkt_i40e->mdev, &rxq->rx_data);
+	}
+
+	for (uint16_t i = 0; i < pkt_i40e->capa.max_output_queues; i++) {
+		i40e_tx_queue_t *txq = &pkt_i40e->tx_queues[i];
+
+		if (txq->tx_data.size)
+			mdev_dma_area_free(&pkt_i40e->mdev, &txq->tx_data);
+	}
+
+	if (pkt_i40e->sockfd != -1)
+		close(pkt_i40e->sockfd);
+
+	ODP_OPS_DATA_FREE(pkt_i40e);
+
+	return 0;
+}
+
+static void i40e_rx_refill(i40e_rx_queue_t *rxq, uint16_t from, uint16_t num)
+{
+	uint16_t i = from;
+
+	while (num) {
+		uint64_t iova = rxq->rx_data.iova + i * I40E_RX_BUF_SIZE;
+		i40e_rx_desc_t *rxd = &rxq->rx_descs[i];
+
+		rxd->addr = odp_cpu_to_le_64(iova);
+		rxd->status_error_len = odp_cpu_to_le_64(0);
+
+		i++;
+		if (i >= rxq->rx_queue_len)
+			i = 0;
+
+		num--;
+	}
+
+	/* Ring the doorbell */
+	odpdrv_mmio_u32le_write(i, rxq->doorbell);
+}
+
+static int i40e_recv(pktio_entry_t *pktio_entry, int rxq_idx,
+		     odp_packet_t pkt_table[], int num)
+{
+	pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data;
+	i40e_rx_queue_t *rxq = &pkt_i40e->rx_queues[rxq_idx];
+	uint16_t refill_from;
+	int rx_pkts = 0;
+
+	if (!pkt_i40e->lockless_rx)
+		odp_ticketlock_lock(&rxq->lock);
+
+	/* Keep track of the start point to refill RX queue */
+	refill_from = rxq->cidx ? rxq->cidx - 1 : rxq->rx_queue_len - 1;
+
+	while (rx_pkts < num) {
+		volatile i40e_rx_desc_t *rxd = &rxq->rx_descs[rxq->cidx];
+		odp_packet_hdr_t *pkt_hdr;
+		odp_packet_t pkt;
+		uint16_t pkt_len;
+		uint64_t status_error_len;
+		int ret;
+
+		status_error_len = odp_le_to_cpu_64(rxd->status_error_len);
+		if (!status_error_len)
+			break;
+
+		pkt_len = (status_error_len & I40E_RXD_QW1_LEN_M) >>
+		    I40E_RXD_QW1_LEN_S;
+
+		pkt = odp_packet_alloc(pkt_i40e->pool, pkt_len);
+		if (odp_unlikely(pkt == ODP_PACKET_INVALID))
+			break;
+
+		pkt_hdr = odp_packet_hdr(pkt);
+
+		ret = odp_packet_copy_from_mem(pkt, 0, pkt_len,
+					       (uint8_t *)rxq->rx_data.vaddr +
+					       rxq->cidx * I40E_RX_BUF_SIZE);
+		if (odp_unlikely(ret)) {
+			odp_packet_free(pkt);
+			break;
+		}
+
+		pkt_hdr->input = pktio_entry->s.handle;
+
+		rxq->cidx++;
+		if (odp_unlikely(rxq->cidx >= rxq->rx_queue_len))
+			rxq->cidx = 0;
+
+		pkt_table[rx_pkts] = pkt;
+		rx_pkts++;
+	}
+
+	if (rx_pkts)
+		i40e_rx_refill(rxq, refill_from, rx_pkts);
+
+	if (!pkt_i40e->lockless_rx)
+		odp_ticketlock_unlock(&rxq->lock);
+
+	return rx_pkts;
+}
+
+/**
+ * Helper function to build descriptor 2nd quad-word.
+ */
+static inline uint64_t txd_ctol(uint32_t cmd, uint32_t tag, uint32_t offset,
+				uint32_t len)
+{
+	return I40E_TXD_DTYPE_DATA |
+	    ((uint64_t)cmd << I40E_TXD_QW1_CMD_S) |
+	    ((uint64_t)tag << I40E_TXD_QW1_L2TAG1_S) |
+	    ((uint64_t)offset << I40E_TXD_QW1_OFFSET_S) |
+	    ((uint64_t)len << I40E_TXD_QW1_LEN_S);
+}
+
+static int i40e_send(pktio_entry_t *pktio_entry, int txq_idx,
+		     const odp_packet_t pkt_table[], int num)
+{
+	pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data;
+	i40e_tx_queue_t *txq = &pkt_i40e->tx_queues[txq_idx];
+	uint16_t budget, tx_txds = 0;
+	int tx_pkts = 0;
+
+	if (!pkt_i40e->lockless_tx)
+		odp_ticketlock_lock(&txq->lock);
+
+	/* Determine how many packets will fit in TX queue */
+	budget = txq->tx_queue_len - 1;
+	budget -= txq->pidx;
+	budget += odp_le_to_cpu_32(*txq->cidx);
+	budget &= txq->tx_queue_len - 1;
+
+	while (tx_txds < budget && tx_pkts < num) {
+		uint16_t pkt_len = _odp_packet_len(pkt_table[tx_pkts]);
+		uint32_t offset = txq->pidx * I40E_TX_BUF_SIZE;
+
+		i40e_tx_desc_t *txd = &txq->tx_descs[txq->pidx];
+
+		uint32_t txd_cmd = I40E_TXD_CMD_ICRC | I40E_TXD_CMD_EOP;
+
+		/* Skip undersized packets silently */
+		if (odp_unlikely(pkt_len < I40E_TX_PACKET_LEN_MIN)) {
+			tx_pkts++;
+			continue;
+		}
+
+		/* Skip oversized packets silently */
+		if (odp_unlikely(pkt_len > I40E_TX_BUF_SIZE)) {
+			tx_pkts++;
+			continue;
+		}
+
+		/* Request CIDX update from firmware from time to time */
+		if (!(txq->pidx & ((txq->tx_queue_len >> 2) - 1)))
+			txd_cmd |= I40E_TXD_CMD_RS;
+
+		odp_packet_copy_to_mem(pkt_table[tx_pkts], 0, pkt_len,
+				       (uint8_t *)txq->tx_data.vaddr + offset);
+
+		txd->addr = odp_cpu_to_le_64(txq->tx_data.iova + offset);
+		txd->cmd_type_offset_len =
+		    odp_cpu_to_le_64(txd_ctol(txd_cmd, 0, 0, pkt_len));
+
+		txq->pidx++;
+		if (odp_unlikely(txq->pidx >= txq->tx_queue_len))
+			txq->pidx -= txq->tx_queue_len;
+
+		tx_txds++;
+		tx_pkts++;
+	}
+
+	/* Ring the doorbell */
+	if (tx_pkts)
+		odpdrv_mmio_u32le_write(txq->pidx, txq->doorbell);
+
+	if (!pkt_i40e->lockless_tx)
+		odp_ticketlock_unlock(&txq->lock);
+
+	odp_packet_free_multi(pkt_table, tx_pkts);
+
+	return tx_pkts;
+}
+
+static int i40e_link_status(pktio_entry_t *pktio_entry)
+{
+	pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data;
+
+	return link_status_fd(pkt_i40e->sockfd, pkt_i40e->mdev.if_name);
+}
+
+static void i40e_wait_link_up(pktio_entry_t *pktio_entry)
+{
+	while (!i40e_link_status(pktio_entry))
+		sleep(1);
+}
+
+static int i40e_capability(pktio_entry_t *pktio_entry,
+			   odp_pktio_capability_t *capa)
+{
+	pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data;
+
+	*capa = pkt_i40e->capa;
+	return 0;
+}
+
+static int i40e_input_queues_config(pktio_entry_t *pktio_entry,
+				    const odp_pktin_queue_param_t *p)
+{
+	pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data;
+
+	if (p->op_mode == ODP_PKTIO_OP_MT_UNSAFE)
+		pkt_i40e->lockless_rx = 1;
+	else
+		pkt_i40e->lockless_rx = 0;
+
+	return 0;
+}
+
+static int i40e_output_queues_config(pktio_entry_t *pktio_entry,
+				     const odp_pktout_queue_param_t *p)
+{
+	pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data;
+
+	if (p->op_mode == ODP_PKTIO_OP_MT_UNSAFE)
+		pkt_i40e->lockless_tx = 1;
+	else
+		pkt_i40e->lockless_tx = 0;
+
+	return 0;
+}
+
+static int i40e_mac_get(pktio_entry_t *pktio_entry, void *mac_addr)
+{
+	pktio_ops_i40e_data_t *pkt_i40e = pktio_entry->s.ops_data;
+
+	if (mac_addr_get_fd(pkt_i40e->sockfd, pkt_i40e->mdev.if_name,
+			    mac_addr) < 0)
+		return -1;
+
+	return ETH_ALEN;
+}
+
+static int i40e_init_global(void)
+{
+	ODP_PRINT("PKTIO: initialized " MODULE_NAME " interface\n");
+	return 0;
+}
+
+static pktio_ops_module_t i40e_pktio_ops = {
+	.base = {
+		 .name = MODULE_NAME,
+		 .init_global = i40e_init_global,
+	},
+
+	.open = i40e_open,
+	.close = i40e_close,
+
+	.recv = i40e_recv,
+	.send = i40e_send,
+
+	.link_status = i40e_link_status,
+
+	.capability = i40e_capability,
+
+	.mac_get = i40e_mac_get,
+
+	.input_queues_config = i40e_input_queues_config,
+	.output_queues_config = i40e_output_queues_config,
+};
+
+/** i40e module entry point */
+ODP_MODULE_CONSTRUCTOR(netmap_pktio_ops)
+{
+	odp_module_constructor(&i40e_pktio_ops);
+
+	odp_subsystem_register_module(pktio_ops, &i40e_pktio_ops);
+}
+
+/*
+ * Temporary variable to enable link this module,
+ * will remove in Makefile scheme changes.
+ */
+int enable_link_i40e_pktio_ops;
+
+#endif /* ODP_MDEV */
diff --git a/platform/linux-generic/pktio/subsystem.c b/platform/linux-generic/pktio/subsystem.c
index a3b36c144..d6d6c39d0 100644
--- a/platform/linux-generic/pktio/subsystem.c
+++ b/platform/linux-generic/pktio/subsystem.c
@@ -44,6 +44,9 @@  extern int enable_link_socket_mmap_pktio_ops;
 #ifdef ODP_PKTIO_TAP
 extern int enable_link_tap_pktio_ops;
 #endif
+#ifdef ODP_MDEV
+extern int enable_link_i40e_pktio_ops;
+#endif
 
 ODP_SUBSYSTEM_CONSTRUCTOR(pktio_ops)
 {
@@ -73,4 +76,7 @@  ODP_SUBSYSTEM_CONSTRUCTOR(pktio_ops)
 #ifdef ODP_PKTIO_TAP
 	enable_link_tap_pktio_ops = 1;
 #endif
+#ifdef ODP_MDEV
+	enable_link_i40e_pktio_ops = 1;
+#endif
 }