/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2016 Intel Corporation
 */

#include <sys/queue.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include <inttypes.h>
#include <rte_byteorder.h>
#include <rte_common.h>
#include <rte_cycles.h>

#include <rte_interrupts.h>
#include <rte_log.h>
#include <rte_debug.h>
#include <rte_pci.h>
#include <rte_bus_pci.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_memory.h>
#include <rte_eal.h>
#include <rte_alarm.h>
#include <rte_ether.h>
#include <rte_ethdev_driver.h>
#include <rte_ethdev_pci.h>
#include <rte_malloc.h>
#include <rte_dev.h>

#include "i40e_logs.h"
#include "base/i40e_prototype.h"
#include "base/i40e_adminq_cmd.h"
#include "base/i40e_type.h"

#include "i40e_rxtx.h"
#include "i40e_ethdev.h"
#include "i40e_pf.h"

/* busy wait delay in msec */
#define I40EVF_BUSY_WAIT_DELAY 10
#define I40EVF_BUSY_WAIT_COUNT 50
#define MAX_RESET_WAIT_CNT     20

#define I40EVF_ALARM_INTERVAL 50000 /* us */

struct i40evf_arq_msg_info {
	enum virtchnl_ops ops;
	enum i40e_status_code result;
	uint16_t buf_len;
	uint16_t msg_len;
	uint8_t *msg;
};

struct vf_cmd_info {
	enum virtchnl_ops ops;
	uint8_t *in_args;
	uint32_t in_args_size;
	uint8_t *out_buffer;
	/* Input & output type. pass in buffer size and pass out
	 * actual return result
	 */
	uint32_t out_size;
};

enum i40evf_aq_result {
	I40EVF_MSG_ERR = -1, /* Meet error when accessing admin queue */
	I40EVF_MSG_NON,      /* Read nothing from admin queue */
	I40EVF_MSG_SYS,      /* Read system msg from admin queue */
	I40EVF_MSG_CMD,      /* Read async command result */
};

static int i40evf_dev_configure(struct rte_eth_dev *dev);
static int i40evf_dev_start(struct rte_eth_dev *dev);
static void i40evf_dev_stop(struct rte_eth_dev *dev);
static void i40evf_dev_info_get(struct rte_eth_dev *dev,
				struct rte_eth_dev_info *dev_info);
static int i40evf_dev_link_update(struct rte_eth_dev *dev,
				  int wait_to_complete);
static int i40evf_dev_stats_get(struct rte_eth_dev *dev,
				struct rte_eth_stats *stats);
static int i40evf_dev_xstats_get(struct rte_eth_dev *dev,
				 struct rte_eth_xstat *xstats, unsigned n);
static int i40evf_dev_xstats_get_names(struct rte_eth_dev *dev,
				       struct rte_eth_xstat_name *xstats_names,
				       unsigned limit);
static void i40evf_dev_xstats_reset(struct rte_eth_dev *dev);
static int i40evf_vlan_filter_set(struct rte_eth_dev *dev,
				  uint16_t vlan_id, int on);
static int i40evf_vlan_offload_set(struct rte_eth_dev *dev, int mask);
static void i40evf_dev_close(struct rte_eth_dev *dev);
static int  i40evf_dev_reset(struct rte_eth_dev *dev);
static void i40evf_dev_promiscuous_enable(struct rte_eth_dev *dev);
static void i40evf_dev_promiscuous_disable(struct rte_eth_dev *dev);
static void i40evf_dev_allmulticast_enable(struct rte_eth_dev *dev);
static void i40evf_dev_allmulticast_disable(struct rte_eth_dev *dev);
static int i40evf_init_vlan(struct rte_eth_dev *dev);
static int i40evf_dev_rx_queue_start(struct rte_eth_dev *dev,
				     uint16_t rx_queue_id);
static int i40evf_dev_rx_queue_stop(struct rte_eth_dev *dev,
				    uint16_t rx_queue_id);
static int i40evf_dev_tx_queue_start(struct rte_eth_dev *dev,
				     uint16_t tx_queue_id);
static int i40evf_dev_tx_queue_stop(struct rte_eth_dev *dev,
				    uint16_t tx_queue_id);
static int i40evf_add_mac_addr(struct rte_eth_dev *dev,
			       struct ether_addr *addr,
			       uint32_t index,
			       uint32_t pool);
static void i40evf_del_mac_addr(struct rte_eth_dev *dev, uint32_t index);
static int i40evf_dev_rss_reta_update(struct rte_eth_dev *dev,
			struct rte_eth_rss_reta_entry64 *reta_conf,
			uint16_t reta_size);
static int i40evf_dev_rss_reta_query(struct rte_eth_dev *dev,
			struct rte_eth_rss_reta_entry64 *reta_conf,
			uint16_t reta_size);
static int i40evf_config_rss(struct i40e_vf *vf);
static int i40evf_dev_rss_hash_update(struct rte_eth_dev *dev,
				      struct rte_eth_rss_conf *rss_conf);
static int i40evf_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
					struct rte_eth_rss_conf *rss_conf);
static int i40evf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
static int i40evf_set_default_mac_addr(struct rte_eth_dev *dev,
					struct ether_addr *mac_addr);
static int
i40evf_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id);
static int
i40evf_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id);
static void i40evf_handle_pf_event(struct rte_eth_dev *dev,
				   uint8_t *msg,
				   uint16_t msglen);

static int
i40evf_add_del_mc_addr_list(struct rte_eth_dev *dev,
			struct ether_addr *mc_addr_set,
			uint32_t nb_mc_addr, bool add);
static int
i40evf_set_mc_addr_list(struct rte_eth_dev *dev, struct ether_addr *mc_addr_set,
			uint32_t nb_mc_addr);

/* Default hash key buffer for RSS */
static uint32_t rss_key_default[I40E_VFQF_HKEY_MAX_INDEX + 1];

struct rte_i40evf_xstats_name_off {
	char name[RTE_ETH_XSTATS_NAME_SIZE];
	unsigned offset;
};

static const struct rte_i40evf_xstats_name_off rte_i40evf_stats_strings[] = {
	{"rx_bytes", offsetof(struct i40e_eth_stats, rx_bytes)},
	{"rx_unicast_packets", offsetof(struct i40e_eth_stats, rx_unicast)},
	{"rx_multicast_packets", offsetof(struct i40e_eth_stats, rx_multicast)},
	{"rx_broadcast_packets", offsetof(struct i40e_eth_stats, rx_broadcast)},
	{"rx_dropped_packets", offsetof(struct i40e_eth_stats, rx_discards)},
	{"rx_unknown_protocol_packets", offsetof(struct i40e_eth_stats,
		rx_unknown_protocol)},
	{"tx_bytes", offsetof(struct i40e_eth_stats, tx_bytes)},
	{"tx_unicast_packets", offsetof(struct i40e_eth_stats, tx_unicast)},
	{"tx_multicast_packets", offsetof(struct i40e_eth_stats, tx_multicast)},
	{"tx_broadcast_packets", offsetof(struct i40e_eth_stats, tx_broadcast)},
	{"tx_dropped_packets", offsetof(struct i40e_eth_stats, tx_discards)},
	{"tx_error_packets", offsetof(struct i40e_eth_stats, tx_errors)},
};

#define I40EVF_NB_XSTATS (sizeof(rte_i40evf_stats_strings) / \
		sizeof(rte_i40evf_stats_strings[0]))

static const struct eth_dev_ops i40evf_eth_dev_ops = {
	.dev_configure        = i40evf_dev_configure,
	.dev_start            = i40evf_dev_start,
	.dev_stop             = i40evf_dev_stop,
	.promiscuous_enable   = i40evf_dev_promiscuous_enable,
	.promiscuous_disable  = i40evf_dev_promiscuous_disable,
	.allmulticast_enable  = i40evf_dev_allmulticast_enable,
	.allmulticast_disable = i40evf_dev_allmulticast_disable,
	.link_update          = i40evf_dev_link_update,
	.stats_get            = i40evf_dev_stats_get,
	.stats_reset          = i40evf_dev_xstats_reset,
	.xstats_get           = i40evf_dev_xstats_get,
	.xstats_get_names     = i40evf_dev_xstats_get_names,
	.xstats_reset         = i40evf_dev_xstats_reset,
	.dev_close            = i40evf_dev_close,
	.dev_reset	      = i40evf_dev_reset,
	.dev_infos_get        = i40evf_dev_info_get,
	.dev_supported_ptypes_get = i40e_dev_supported_ptypes_get,
	.vlan_filter_set      = i40evf_vlan_filter_set,
	.vlan_offload_set     = i40evf_vlan_offload_set,
	.rx_queue_start       = i40evf_dev_rx_queue_start,
	.rx_queue_stop        = i40evf_dev_rx_queue_stop,
	.tx_queue_start       = i40evf_dev_tx_queue_start,
	.tx_queue_stop        = i40evf_dev_tx_queue_stop,
	.rx_queue_setup       = i40e_dev_rx_queue_setup,
	.rx_queue_release     = i40e_dev_rx_queue_release,
	.rx_queue_intr_enable = i40evf_dev_rx_queue_intr_enable,
	.rx_queue_intr_disable = i40evf_dev_rx_queue_intr_disable,
	.rx_descriptor_done   = i40e_dev_rx_descriptor_done,
	.rx_descriptor_status = i40e_dev_rx_descriptor_status,
	.tx_descriptor_status = i40e_dev_tx_descriptor_status,
	.tx_queue_setup       = i40e_dev_tx_queue_setup,
	.tx_queue_release     = i40e_dev_tx_queue_release,
	.rx_queue_count       = i40e_dev_rx_queue_count,
	.rxq_info_get         = i40e_rxq_info_get,
	.txq_info_get         = i40e_txq_info_get,
	.mac_addr_add	      = i40evf_add_mac_addr,
	.mac_addr_remove      = i40evf_del_mac_addr,
	.set_mc_addr_list     = i40evf_set_mc_addr_list,
	.reta_update          = i40evf_dev_rss_reta_update,
	.reta_query           = i40evf_dev_rss_reta_query,
	.rss_hash_update      = i40evf_dev_rss_hash_update,
	.rss_hash_conf_get    = i40evf_dev_rss_hash_conf_get,
	.mtu_set              = i40evf_dev_mtu_set,
	.mac_addr_set         = i40evf_set_default_mac_addr,
};

/*
 * Read data in admin queue to get msg from pf driver
 */
static enum i40evf_aq_result
i40evf_read_pfmsg(struct rte_eth_dev *dev, struct i40evf_arq_msg_info *data)
{
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_arq_event_info event;
	enum virtchnl_ops opcode;
	enum i40e_status_code retval;
	int ret;
	enum i40evf_aq_result result = I40EVF_MSG_NON;

	event.buf_len = data->buf_len;
	event.msg_buf = data->msg;
	ret = i40e_clean_arq_element(hw, &event, NULL);
	/* Can't read any msg from adminQ */
	if (ret) {
		if (ret != I40E_ERR_ADMIN_QUEUE_NO_WORK)
			result = I40EVF_MSG_ERR;
		return result;
	}

	opcode = (enum virtchnl_ops)rte_le_to_cpu_32(event.desc.cookie_high);
	retval = (enum i40e_status_code)rte_le_to_cpu_32(event.desc.cookie_low);
	/* pf sys event */
	if (opcode == VIRTCHNL_OP_EVENT) {
		struct virtchnl_pf_event *vpe =
			(struct virtchnl_pf_event *)event.msg_buf;

		result = I40EVF_MSG_SYS;
		switch (vpe->event) {
		case VIRTCHNL_EVENT_LINK_CHANGE:
			vf->link_up =
				vpe->event_data.link_event.link_status;
			vf->link_speed =
				vpe->event_data.link_event.link_speed;
			vf->pend_msg |= PFMSG_LINK_CHANGE;
			PMD_DRV_LOG(INFO, "Link status update:%s",
				    vf->link_up ? "up" : "down");
			break;
		case VIRTCHNL_EVENT_RESET_IMPENDING:
			vf->vf_reset = true;
			vf->pend_msg |= PFMSG_RESET_IMPENDING;
			PMD_DRV_LOG(INFO, "vf is reseting");
			break;
		case VIRTCHNL_EVENT_PF_DRIVER_CLOSE:
			vf->dev_closed = true;
			vf->pend_msg |= PFMSG_DRIVER_CLOSE;
			PMD_DRV_LOG(INFO, "PF driver closed");
			break;
		default:
			PMD_DRV_LOG(ERR, "%s: Unknown event %d from pf",
				    __func__, vpe->event);
		}
	} else {
		/* async reply msg on command issued by vf previously */
		result = I40EVF_MSG_CMD;
		/* Actual data length read from PF */
		data->msg_len = event.msg_len;
	}

	data->result = retval;
	data->ops = opcode;

	return result;
}

/**
 * clear current command. Only call in case execute
 * _atomic_set_cmd successfully.
 */
static inline void
_clear_cmd(struct i40e_vf *vf)
{
	rte_wmb();
	vf->pend_cmd = VIRTCHNL_OP_UNKNOWN;
}

/*
 * Check there is pending cmd in execution. If none, set new command.
 */
static inline int
_atomic_set_cmd(struct i40e_vf *vf, enum virtchnl_ops ops)
{
	int ret = rte_atomic32_cmpset(&vf->pend_cmd,
			VIRTCHNL_OP_UNKNOWN, ops);

	if (!ret)
		PMD_DRV_LOG(ERR, "There is incomplete cmd %d", vf->pend_cmd);

	return !ret;
}

#define MAX_TRY_TIMES 200
#define ASQ_DELAY_MS  10

static int
i40evf_execute_vf_cmd(struct rte_eth_dev *dev, struct vf_cmd_info *args)
{
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40evf_arq_msg_info info;
	enum i40evf_aq_result ret;
	int err, i = 0;

	if (_atomic_set_cmd(vf, args->ops))
		return -1;

	info.msg = args->out_buffer;
	info.buf_len = args->out_size;
	info.ops = VIRTCHNL_OP_UNKNOWN;
	info.result = I40E_SUCCESS;

	err = i40e_aq_send_msg_to_pf(hw, args->ops, I40E_SUCCESS,
		     args->in_args, args->in_args_size, NULL);
	if (err) {
		PMD_DRV_LOG(ERR, "fail to send cmd %d", args->ops);
		_clear_cmd(vf);
		return err;
	}

	switch (args->ops) {
	case VIRTCHNL_OP_RESET_VF:
		/*no need to process in this function */
		err = 0;
		break;
	case VIRTCHNL_OP_VERSION:
	case VIRTCHNL_OP_GET_VF_RESOURCES:
		/* for init adminq commands, need to poll the response */
		err = -1;
		do {
			ret = i40evf_read_pfmsg(dev, &info);
			vf->cmd_retval = info.result;
			if (ret == I40EVF_MSG_CMD) {
				err = 0;
				break;
			} else if (ret == I40EVF_MSG_ERR)
				break;
			rte_delay_ms(ASQ_DELAY_MS);
			/* If don't read msg or read sys event, continue */
		} while (i++ < MAX_TRY_TIMES);
		_clear_cmd(vf);
		break;

	default:
		/* for other adminq in running time, waiting the cmd done flag */
		err = -1;
		do {
			if (vf->pend_cmd == VIRTCHNL_OP_UNKNOWN) {
				err = 0;
				break;
			}
			rte_delay_ms(ASQ_DELAY_MS);
			/* If don't read msg or read sys event, continue */
		} while (i++ < MAX_TRY_TIMES);
		/* If there's no response is received, clear command */
		if (i >= MAX_TRY_TIMES) {
			PMD_DRV_LOG(WARNING, "No response for %d", args->ops);
			_clear_cmd(vf);
		}
		break;
	}

	return err | vf->cmd_retval;
}

/*
 * Check API version with sync wait until version read or fail from admin queue
 */
static int
i40evf_check_api_version(struct rte_eth_dev *dev)
{
	struct virtchnl_version_info version, *pver;
	int err;
	struct vf_cmd_info args;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);

	version.major = VIRTCHNL_VERSION_MAJOR;
	version.minor = VIRTCHNL_VERSION_MINOR;

	args.ops = VIRTCHNL_OP_VERSION;
	args.in_args = (uint8_t *)&version;
	args.in_args_size = sizeof(version);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;

	err = i40evf_execute_vf_cmd(dev, &args);
	if (err) {
		PMD_INIT_LOG(ERR, "fail to execute command OP_VERSION");
		return err;
	}

	pver = (struct virtchnl_version_info *)args.out_buffer;
	vf->version_major = pver->major;
	vf->version_minor = pver->minor;
	if ((vf->version_major == VIRTCHNL_VERSION_MAJOR) &&
		(vf->version_minor <= VIRTCHNL_VERSION_MINOR))
		PMD_DRV_LOG(INFO, "Peer is Linux PF host");
	else {
		PMD_INIT_LOG(ERR, "PF/VF API version mismatch:(%u.%u)-(%u.%u)",
					vf->version_major, vf->version_minor,
						VIRTCHNL_VERSION_MAJOR,
						VIRTCHNL_VERSION_MINOR);
		return -1;
	}

	return 0;
}

static int
i40evf_get_vf_resource(struct rte_eth_dev *dev)
{
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	int err;
	struct vf_cmd_info args;
	uint32_t caps, len;

	args.ops = VIRTCHNL_OP_GET_VF_RESOURCES;
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	if (PF_IS_V11(vf)) {
		caps = VIRTCHNL_VF_OFFLOAD_L2 |
		       VIRTCHNL_VF_OFFLOAD_RSS_AQ |
		       VIRTCHNL_VF_OFFLOAD_RSS_REG |
		       VIRTCHNL_VF_OFFLOAD_VLAN |
		       VIRTCHNL_VF_OFFLOAD_RX_POLLING;
		args.in_args = (uint8_t *)&caps;
		args.in_args_size = sizeof(caps);
	} else {
		args.in_args = NULL;
		args.in_args_size = 0;
	}
	err = i40evf_execute_vf_cmd(dev, &args);

	if (err) {
		PMD_DRV_LOG(ERR, "fail to execute command OP_GET_VF_RESOURCE");
		return err;
	}

	len =  sizeof(struct virtchnl_vf_resource) +
		I40E_MAX_VF_VSI * sizeof(struct virtchnl_vsi_resource);

	rte_memcpy(vf->vf_res, args.out_buffer,
			RTE_MIN(args.out_size, len));
	i40e_vf_parse_hw_config(hw, vf->vf_res);

	return 0;
}

static int
i40evf_config_promisc(struct rte_eth_dev *dev,
		      bool enable_unicast,
		      bool enable_multicast)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	int err;
	struct vf_cmd_info args;
	struct virtchnl_promisc_info promisc;

	promisc.flags = 0;
	promisc.vsi_id = vf->vsi_res->vsi_id;

	if (enable_unicast)
		promisc.flags |= FLAG_VF_UNICAST_PROMISC;

	if (enable_multicast)
		promisc.flags |= FLAG_VF_MULTICAST_PROMISC;

	args.ops = VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE;
	args.in_args = (uint8_t *)&promisc;
	args.in_args_size = sizeof(promisc);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;

	err = i40evf_execute_vf_cmd(dev, &args);

	if (err)
		PMD_DRV_LOG(ERR, "fail to execute command "
			    "CONFIG_PROMISCUOUS_MODE");
	return err;
}

static int
i40evf_enable_vlan_strip(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct vf_cmd_info args;
	int ret;

	memset(&args, 0, sizeof(args));
	args.ops = VIRTCHNL_OP_ENABLE_VLAN_STRIPPING;
	args.in_args = NULL;
	args.in_args_size = 0;
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	ret = i40evf_execute_vf_cmd(dev, &args);
	if (ret)
		PMD_DRV_LOG(ERR, "Failed to execute command of "
			    "VIRTCHNL_OP_ENABLE_VLAN_STRIPPING");

	return ret;
}

static int
i40evf_disable_vlan_strip(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct vf_cmd_info args;
	int ret;

	memset(&args, 0, sizeof(args));
	args.ops = VIRTCHNL_OP_DISABLE_VLAN_STRIPPING;
	args.in_args = NULL;
	args.in_args_size = 0;
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	ret = i40evf_execute_vf_cmd(dev, &args);
	if (ret)
		PMD_DRV_LOG(ERR, "Failed to execute command of "
			    "VIRTCHNL_OP_DISABLE_VLAN_STRIPPING");

	return ret;
}

static void
i40evf_fill_virtchnl_vsi_txq_info(struct virtchnl_txq_info *txq_info,
				  uint16_t vsi_id,
				  uint16_t queue_id,
				  uint16_t nb_txq,
				  struct i40e_tx_queue *txq)
{
	txq_info->vsi_id = vsi_id;
	txq_info->queue_id = queue_id;
	if (queue_id < nb_txq) {
		txq_info->ring_len = txq->nb_tx_desc;
		txq_info->dma_ring_addr = txq->tx_ring_phys_addr;
	}
}

static void
i40evf_fill_virtchnl_vsi_rxq_info(struct virtchnl_rxq_info *rxq_info,
				  uint16_t vsi_id,
				  uint16_t queue_id,
				  uint16_t nb_rxq,
				  uint32_t max_pkt_size,
				  struct i40e_rx_queue *rxq)
{
	rxq_info->vsi_id = vsi_id;
	rxq_info->queue_id = queue_id;
	rxq_info->max_pkt_size = max_pkt_size;
	if (queue_id < nb_rxq) {
		rxq_info->ring_len = rxq->nb_rx_desc;
		rxq_info->dma_ring_addr = rxq->rx_ring_phys_addr;
		rxq_info->databuffer_size =
			(rte_pktmbuf_data_room_size(rxq->mp) -
				RTE_PKTMBUF_HEADROOM);
	}
}

static int
i40evf_configure_vsi_queues(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_rx_queue **rxq =
		(struct i40e_rx_queue **)dev->data->rx_queues;
	struct i40e_tx_queue **txq =
		(struct i40e_tx_queue **)dev->data->tx_queues;
	struct virtchnl_vsi_queue_config_info *vc_vqci;
	struct virtchnl_queue_pair_info *vc_qpi;
	struct vf_cmd_info args;
	uint16_t i, nb_qp = vf->num_queue_pairs;
	const uint32_t size =
		I40E_VIRTCHNL_CONFIG_VSI_QUEUES_SIZE(vc_vqci, nb_qp);
	uint8_t buff[size];
	int ret;

	memset(buff, 0, sizeof(buff));
	vc_vqci = (struct virtchnl_vsi_queue_config_info *)buff;
	vc_vqci->vsi_id = vf->vsi_res->vsi_id;
	vc_vqci->num_queue_pairs = nb_qp;

	for (i = 0, vc_qpi = vc_vqci->qpair; i < nb_qp; i++, vc_qpi++) {
		i40evf_fill_virtchnl_vsi_txq_info(&vc_qpi->txq,
			vc_vqci->vsi_id, i, dev->data->nb_tx_queues, txq[i]);
		i40evf_fill_virtchnl_vsi_rxq_info(&vc_qpi->rxq,
			vc_vqci->vsi_id, i, dev->data->nb_rx_queues,
					vf->max_pkt_len, rxq[i]);
	}
	memset(&args, 0, sizeof(args));
	args.ops = VIRTCHNL_OP_CONFIG_VSI_QUEUES;
	args.in_args = (uint8_t *)vc_vqci;
	args.in_args_size = size;
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	ret = i40evf_execute_vf_cmd(dev, &args);
	if (ret)
		PMD_DRV_LOG(ERR, "Failed to execute command of "
			"VIRTCHNL_OP_CONFIG_VSI_QUEUES");

	return ret;
}

static int
i40evf_config_irq_map(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct vf_cmd_info args;
	uint8_t cmd_buffer[sizeof(struct virtchnl_irq_map_info) + \
		sizeof(struct virtchnl_vector_map)];
	struct virtchnl_irq_map_info *map_info;
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
	uint32_t vector_id;
	int i, err;

	if (dev->data->dev_conf.intr_conf.rxq != 0 &&
	    rte_intr_allow_others(intr_handle))
		vector_id = I40E_RX_VEC_START;
	else
		vector_id = I40E_MISC_VEC_ID;

	map_info = (struct virtchnl_irq_map_info *)cmd_buffer;
	map_info->num_vectors = 1;
	map_info->vecmap[0].rxitr_idx = I40E_ITR_INDEX_DEFAULT;
	map_info->vecmap[0].vsi_id = vf->vsi_res->vsi_id;
	/* Alway use default dynamic MSIX interrupt */
	map_info->vecmap[0].vector_id = vector_id;
	/* Don't map any tx queue */
	map_info->vecmap[0].txq_map = 0;
	map_info->vecmap[0].rxq_map = 0;
	for (i = 0; i < dev->data->nb_rx_queues; i++) {
		map_info->vecmap[0].rxq_map |= 1 << i;
		if (rte_intr_dp_is_en(intr_handle))
			intr_handle->intr_vec[i] = vector_id;
	}

	args.ops = VIRTCHNL_OP_CONFIG_IRQ_MAP;
	args.in_args = (u8 *)cmd_buffer;
	args.in_args_size = sizeof(cmd_buffer);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	err = i40evf_execute_vf_cmd(dev, &args);
	if (err)
		PMD_DRV_LOG(ERR, "fail to execute command OP_ENABLE_QUEUES");

	return err;
}

static int
i40evf_switch_queue(struct rte_eth_dev *dev, bool isrx, uint16_t qid,
				bool on)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct virtchnl_queue_select queue_select;
	int err;
	struct vf_cmd_info args;
	memset(&queue_select, 0, sizeof(queue_select));
	queue_select.vsi_id = vf->vsi_res->vsi_id;

	if (isrx)
		queue_select.rx_queues |= 1 << qid;
	else
		queue_select.tx_queues |= 1 << qid;

	if (on)
		args.ops = VIRTCHNL_OP_ENABLE_QUEUES;
	else
		args.ops = VIRTCHNL_OP_DISABLE_QUEUES;
	args.in_args = (u8 *)&queue_select;
	args.in_args_size = sizeof(queue_select);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	err = i40evf_execute_vf_cmd(dev, &args);
	if (err)
		PMD_DRV_LOG(ERR, "fail to switch %s %u %s",
			    isrx ? "RX" : "TX", qid, on ? "on" : "off");

	return err;
}

static int
i40evf_start_queues(struct rte_eth_dev *dev)
{
	struct rte_eth_dev_data *dev_data = dev->data;
	int i;
	struct i40e_rx_queue *rxq;
	struct i40e_tx_queue *txq;

	for (i = 0; i < dev->data->nb_rx_queues; i++) {
		rxq = dev_data->rx_queues[i];
		if (rxq->rx_deferred_start)
			continue;
		if (i40evf_dev_rx_queue_start(dev, i) != 0) {
			PMD_DRV_LOG(ERR, "Fail to start queue %u", i);
			return -1;
		}
	}

	for (i = 0; i < dev->data->nb_tx_queues; i++) {
		txq = dev_data->tx_queues[i];
		if (txq->tx_deferred_start)
			continue;
		if (i40evf_dev_tx_queue_start(dev, i) != 0) {
			PMD_DRV_LOG(ERR, "Fail to start queue %u", i);
			return -1;
		}
	}

	return 0;
}

static int
i40evf_stop_queues(struct rte_eth_dev *dev)
{
	int i;

	/* Stop TX queues first */
	for (i = 0; i < dev->data->nb_tx_queues; i++) {
		if (i40evf_dev_tx_queue_stop(dev, i) != 0) {
			PMD_DRV_LOG(ERR, "Fail to stop queue %u", i);
			return -1;
		}
	}

	/* Then stop RX queues */
	for (i = 0; i < dev->data->nb_rx_queues; i++) {
		if (i40evf_dev_rx_queue_stop(dev, i) != 0) {
			PMD_DRV_LOG(ERR, "Fail to stop queue %u", i);
			return -1;
		}
	}

	return 0;
}

static int
i40evf_add_mac_addr(struct rte_eth_dev *dev,
		    struct ether_addr *addr,
		    __rte_unused uint32_t index,
		    __rte_unused uint32_t pool)
{
	struct virtchnl_ether_addr_list *list;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	uint8_t cmd_buffer[sizeof(struct virtchnl_ether_addr_list) + \
			sizeof(struct virtchnl_ether_addr)];
	int err;
	struct vf_cmd_info args;

	if (is_zero_ether_addr(addr)) {
		PMD_DRV_LOG(ERR, "Invalid mac:%x:%x:%x:%x:%x:%x",
			    addr->addr_bytes[0], addr->addr_bytes[1],
			    addr->addr_bytes[2], addr->addr_bytes[3],
			    addr->addr_bytes[4], addr->addr_bytes[5]);
		return I40E_ERR_INVALID_MAC_ADDR;
	}

	list = (struct virtchnl_ether_addr_list *)cmd_buffer;
	list->vsi_id = vf->vsi_res->vsi_id;
	list->num_elements = 1;
	rte_memcpy(list->list[0].addr, addr->addr_bytes,
					sizeof(addr->addr_bytes));

	args.ops = VIRTCHNL_OP_ADD_ETH_ADDR;
	args.in_args = cmd_buffer;
	args.in_args_size = sizeof(cmd_buffer);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	err = i40evf_execute_vf_cmd(dev, &args);
	if (err)
		PMD_DRV_LOG(ERR, "fail to execute command "
			    "OP_ADD_ETHER_ADDRESS");
	else
		vf->vsi.mac_num++;

	return err;
}

static void
i40evf_del_mac_addr_by_addr(struct rte_eth_dev *dev,
			    struct ether_addr *addr)
{
	struct virtchnl_ether_addr_list *list;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	uint8_t cmd_buffer[sizeof(struct virtchnl_ether_addr_list) + \
			sizeof(struct virtchnl_ether_addr)];
	int err;
	struct vf_cmd_info args;

	if (i40e_validate_mac_addr(addr->addr_bytes) != I40E_SUCCESS) {
		PMD_DRV_LOG(ERR, "Invalid mac:%x-%x-%x-%x-%x-%x",
			    addr->addr_bytes[0], addr->addr_bytes[1],
			    addr->addr_bytes[2], addr->addr_bytes[3],
			    addr->addr_bytes[4], addr->addr_bytes[5]);
		return;
	}

	list = (struct virtchnl_ether_addr_list *)cmd_buffer;
	list->vsi_id = vf->vsi_res->vsi_id;
	list->num_elements = 1;
	rte_memcpy(list->list[0].addr, addr->addr_bytes,
			sizeof(addr->addr_bytes));

	args.ops = VIRTCHNL_OP_DEL_ETH_ADDR;
	args.in_args = cmd_buffer;
	args.in_args_size = sizeof(cmd_buffer);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	err = i40evf_execute_vf_cmd(dev, &args);
	if (err)
		PMD_DRV_LOG(ERR, "fail to execute command "
			    "OP_DEL_ETHER_ADDRESS");
	else
		vf->vsi.mac_num--;
	return;
}

static void
i40evf_del_mac_addr(struct rte_eth_dev *dev, uint32_t index)
{
	struct rte_eth_dev_data *data = dev->data;
	struct ether_addr *addr;

	addr = &data->mac_addrs[index];

	i40evf_del_mac_addr_by_addr(dev, addr);
}

static int
i40evf_query_stats(struct rte_eth_dev *dev, struct i40e_eth_stats **pstats)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct virtchnl_queue_select q_stats;
	int err;
	struct vf_cmd_info args;

	memset(&q_stats, 0, sizeof(q_stats));
	q_stats.vsi_id = vf->vsi_res->vsi_id;
	args.ops = VIRTCHNL_OP_GET_STATS;
	args.in_args = (u8 *)&q_stats;
	args.in_args_size = sizeof(q_stats);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;

	err = i40evf_execute_vf_cmd(dev, &args);
	if (err) {
		PMD_DRV_LOG(ERR, "fail to execute command OP_GET_STATS");
		*pstats = NULL;
		return err;
	}
	*pstats = (struct i40e_eth_stats *)args.out_buffer;
	return 0;
}

static void
i40evf_stat_update_48(uint64_t *offset,
		   uint64_t *stat)
{
	if (*stat >= *offset)
		*stat = *stat - *offset;
	else
		*stat = (uint64_t)((*stat +
			((uint64_t)1 << I40E_48_BIT_WIDTH)) - *offset);

	*stat &= I40E_48_BIT_MASK;
}

static void
i40evf_stat_update_32(uint64_t *offset,
		   uint64_t *stat)
{
	if (*stat >= *offset)
		*stat = (uint64_t)(*stat - *offset);
	else
		*stat = (uint64_t)((*stat +
			((uint64_t)1 << I40E_32_BIT_WIDTH)) - *offset);
}

static void
i40evf_update_stats(struct i40e_vsi *vsi,
					struct i40e_eth_stats *nes)
{
	struct i40e_eth_stats *oes = &vsi->eth_stats_offset;

	i40evf_stat_update_48(&oes->rx_bytes,
			    &nes->rx_bytes);
	i40evf_stat_update_48(&oes->rx_unicast,
			    &nes->rx_unicast);
	i40evf_stat_update_48(&oes->rx_multicast,
			    &nes->rx_multicast);
	i40evf_stat_update_48(&oes->rx_broadcast,
			    &nes->rx_broadcast);
	i40evf_stat_update_32(&oes->rx_discards,
				&nes->rx_discards);
	i40evf_stat_update_32(&oes->rx_unknown_protocol,
			    &nes->rx_unknown_protocol);
	i40evf_stat_update_48(&oes->tx_bytes,
			    &nes->tx_bytes);
	i40evf_stat_update_48(&oes->tx_unicast,
			    &nes->tx_unicast);
	i40evf_stat_update_48(&oes->tx_multicast,
			    &nes->tx_multicast);
	i40evf_stat_update_48(&oes->tx_broadcast,
			    &nes->tx_broadcast);
	i40evf_stat_update_32(&oes->tx_errors, &nes->tx_errors);
	i40evf_stat_update_32(&oes->tx_discards, &nes->tx_discards);
}

static void
i40evf_dev_xstats_reset(struct rte_eth_dev *dev)
{
	int ret;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_eth_stats *pstats = NULL;

	/* read stat values to clear hardware registers */
	ret = i40evf_query_stats(dev, &pstats);

	/* set stats offset base on current values */
	if (ret == 0)
		vf->vsi.eth_stats_offset = *pstats;
}

static int i40evf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
				      struct rte_eth_xstat_name *xstats_names,
				      __rte_unused unsigned limit)
{
	unsigned i;

	if (xstats_names != NULL)
		for (i = 0; i < I40EVF_NB_XSTATS; i++) {
			snprintf(xstats_names[i].name,
				sizeof(xstats_names[i].name),
				"%s", rte_i40evf_stats_strings[i].name);
		}
	return I40EVF_NB_XSTATS;
}

static int i40evf_dev_xstats_get(struct rte_eth_dev *dev,
				 struct rte_eth_xstat *xstats, unsigned n)
{
	int ret;
	unsigned i;
	struct i40e_eth_stats *pstats = NULL;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_vsi *vsi = &vf->vsi;

	if (n < I40EVF_NB_XSTATS)
		return I40EVF_NB_XSTATS;

	ret = i40evf_query_stats(dev, &pstats);
	if (ret != 0)
		return 0;

	if (!xstats)
		return 0;

	i40evf_update_stats(vsi, pstats);

	/* loop over xstats array and values from pstats */
	for (i = 0; i < I40EVF_NB_XSTATS; i++) {
		xstats[i].id = i;
		xstats[i].value = *(uint64_t *)(((char *)pstats) +
			rte_i40evf_stats_strings[i].offset);
	}

	return I40EVF_NB_XSTATS;
}

static int
i40evf_add_vlan(struct rte_eth_dev *dev, uint16_t vlanid)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct virtchnl_vlan_filter_list *vlan_list;
	uint8_t cmd_buffer[sizeof(struct virtchnl_vlan_filter_list) +
							sizeof(uint16_t)];
	int err;
	struct vf_cmd_info args;

	vlan_list = (struct virtchnl_vlan_filter_list *)cmd_buffer;
	vlan_list->vsi_id = vf->vsi_res->vsi_id;
	vlan_list->num_elements = 1;
	vlan_list->vlan_id[0] = vlanid;

	args.ops = VIRTCHNL_OP_ADD_VLAN;
	args.in_args = (u8 *)&cmd_buffer;
	args.in_args_size = sizeof(cmd_buffer);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	err = i40evf_execute_vf_cmd(dev, &args);
	if (err)
		PMD_DRV_LOG(ERR, "fail to execute command OP_ADD_VLAN");

	return err;
}

static int
i40evf_del_vlan(struct rte_eth_dev *dev, uint16_t vlanid)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct virtchnl_vlan_filter_list *vlan_list;
	uint8_t cmd_buffer[sizeof(struct virtchnl_vlan_filter_list) +
							sizeof(uint16_t)];
	int err;
	struct vf_cmd_info args;

	vlan_list = (struct virtchnl_vlan_filter_list *)cmd_buffer;
	vlan_list->vsi_id = vf->vsi_res->vsi_id;
	vlan_list->num_elements = 1;
	vlan_list->vlan_id[0] = vlanid;

	args.ops = VIRTCHNL_OP_DEL_VLAN;
	args.in_args = (u8 *)&cmd_buffer;
	args.in_args_size = sizeof(cmd_buffer);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	err = i40evf_execute_vf_cmd(dev, &args);
	if (err)
		PMD_DRV_LOG(ERR, "fail to execute command OP_DEL_VLAN");

	return err;
}

static const struct rte_pci_id pci_id_i40evf_map[] = {
	{ RTE_PCI_DEVICE(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_VF) },
	{ RTE_PCI_DEVICE(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_VF_HV) },
	{ RTE_PCI_DEVICE(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_X722_A0_VF) },
	{ RTE_PCI_DEVICE(I40E_INTEL_VENDOR_ID, I40E_DEV_ID_X722_VF) },
	{ .vendor_id = 0, /* sentinel */ },
};

/* Disable IRQ0 */
static inline void
i40evf_disable_irq0(struct i40e_hw *hw)
{
	/* Disable all interrupt types */
	I40E_WRITE_REG(hw, I40E_VFINT_ICR0_ENA1, 0);
	I40E_WRITE_REG(hw, I40E_VFINT_DYN_CTL01,
		       I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
	I40EVF_WRITE_FLUSH(hw);
}

/* Enable IRQ0 */
static inline void
i40evf_enable_irq0(struct i40e_hw *hw)
{
	/* Enable admin queue interrupt trigger */
	uint32_t val;

	i40evf_disable_irq0(hw);
	val = I40E_READ_REG(hw, I40E_VFINT_ICR0_ENA1);
	val |= I40E_VFINT_ICR0_ENA1_ADMINQ_MASK |
		I40E_VFINT_ICR0_ENA1_LINK_STAT_CHANGE_MASK;
	I40E_WRITE_REG(hw, I40E_VFINT_ICR0_ENA1, val);

	I40E_WRITE_REG(hw, I40E_VFINT_DYN_CTL01,
		I40E_VFINT_DYN_CTL01_INTENA_MASK |
		I40E_VFINT_DYN_CTL01_CLEARPBA_MASK |
		I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);

	I40EVF_WRITE_FLUSH(hw);
}

static int
i40evf_check_vf_reset_done(struct i40e_hw *hw)
{
	int i, reset;

	for (i = 0; i < MAX_RESET_WAIT_CNT; i++) {
		reset = I40E_READ_REG(hw, I40E_VFGEN_RSTAT) &
			I40E_VFGEN_RSTAT_VFR_STATE_MASK;
		reset = reset >> I40E_VFGEN_RSTAT_VFR_STATE_SHIFT;
		if (reset == VIRTCHNL_VFR_VFACTIVE ||
		    reset == VIRTCHNL_VFR_COMPLETED)
			break;
		rte_delay_ms(50);
	}

	if (i >= MAX_RESET_WAIT_CNT)
		return -1;

	return 0;
}
static int
i40evf_reset_vf(struct i40e_hw *hw)
{
	int ret;

	if (i40e_vf_reset(hw) != I40E_SUCCESS) {
		PMD_INIT_LOG(ERR, "Reset VF NIC failed");
		return -1;
	}
	/**
	  * After issuing vf reset command to pf, pf won't necessarily
	  * reset vf, it depends on what state it exactly is. If it's not
	  * initialized yet, it won't have vf reset since it's in a certain
	  * state. If not, it will try to reset. Even vf is reset, pf will
	  * set I40E_VFGEN_RSTAT to COMPLETE first, then wait 10ms and set
	  * it to ACTIVE. In this duration, vf may not catch the moment that
	  * COMPLETE is set. So, for vf, we'll try to wait a long time.
	  */
	rte_delay_ms(200);

	ret = i40evf_check_vf_reset_done(hw);
	if (ret) {
		PMD_INIT_LOG(ERR, "VF is still resetting");
		return ret;
	}

	return 0;
}

static int
i40evf_init_vf(struct rte_eth_dev *dev)
{
	int i, err, bufsz;
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	uint16_t interval =
		i40e_calc_itr_interval(0, 0);

	vf->adapter = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
	vf->dev_data = dev->data;
	err = i40e_set_mac_type(hw);
	if (err) {
		PMD_INIT_LOG(ERR, "set_mac_type failed: %d", err);
		goto err;
	}

	err = i40evf_check_vf_reset_done(hw);
	if (err)
		goto err;

	i40e_init_adminq_parameter(hw);
	err = i40e_init_adminq(hw);
	if (err) {
		PMD_INIT_LOG(ERR, "init_adminq failed: %d", err);
		goto err;
	}

	/* Reset VF and wait until it's complete */
	if (i40evf_reset_vf(hw)) {
		PMD_INIT_LOG(ERR, "reset NIC failed");
		goto err_aq;
	}

	/* VF reset, shutdown admin queue and initialize again */
	if (i40e_shutdown_adminq(hw) != I40E_SUCCESS) {
		PMD_INIT_LOG(ERR, "i40e_shutdown_adminq failed");
		goto err;
	}

	i40e_init_adminq_parameter(hw);
	if (i40e_init_adminq(hw) != I40E_SUCCESS) {
		PMD_INIT_LOG(ERR, "init_adminq failed");
		goto err;
	}

	vf->aq_resp = rte_zmalloc("vf_aq_resp", I40E_AQ_BUF_SZ, 0);
	if (!vf->aq_resp) {
		PMD_INIT_LOG(ERR, "unable to allocate vf_aq_resp memory");
		goto err_aq;
	}
	if (i40evf_check_api_version(dev) != 0) {
		PMD_INIT_LOG(ERR, "check_api version failed");
		goto err_api;
	}
	bufsz = sizeof(struct virtchnl_vf_resource) +
		(I40E_MAX_VF_VSI * sizeof(struct virtchnl_vsi_resource));
	vf->vf_res = rte_zmalloc("vf_res", bufsz, 0);
	if (!vf->vf_res) {
		PMD_INIT_LOG(ERR, "unable to allocate vf_res memory");
		goto err_api;
	}

	if (i40evf_get_vf_resource(dev) != 0) {
		PMD_INIT_LOG(ERR, "i40evf_get_vf_config failed");
		goto err_alloc;
	}

	/* got VF config message back from PF, now we can parse it */
	for (i = 0; i < vf->vf_res->num_vsis; i++) {
		if (vf->vf_res->vsi_res[i].vsi_type == VIRTCHNL_VSI_SRIOV)
			vf->vsi_res = &vf->vf_res->vsi_res[i];
	}

	if (!vf->vsi_res) {
		PMD_INIT_LOG(ERR, "no LAN VSI found");
		goto err_alloc;
	}

	if (hw->mac.type == I40E_MAC_X722_VF)
		vf->flags = I40E_FLAG_RSS_AQ_CAPABLE;
	vf->vsi.vsi_id = vf->vsi_res->vsi_id;

	switch (vf->vsi_res->vsi_type) {
	case VIRTCHNL_VSI_SRIOV:
		vf->vsi.type = I40E_VSI_SRIOV;
		break;
	default:
		vf->vsi.type = I40E_VSI_TYPE_UNKNOWN;
		break;
	}
	vf->vsi.nb_qps = vf->vsi_res->num_queue_pairs;
	vf->vsi.adapter = I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);

	/* Store the MAC address configured by host, or generate random one */
	if (is_valid_assigned_ether_addr((struct ether_addr *)hw->mac.addr))
		vf->flags |= I40E_FLAG_VF_MAC_BY_PF;
	else
		eth_random_addr(hw->mac.addr); /* Generate a random one */

	I40E_WRITE_REG(hw, I40E_VFINT_DYN_CTL01,
		       (I40E_ITR_INDEX_DEFAULT <<
			I40E_VFINT_DYN_CTL0_ITR_INDX_SHIFT) |
		       (interval <<
			I40E_VFINT_DYN_CTL0_INTERVAL_SHIFT));
	I40EVF_WRITE_FLUSH(hw);

	return 0;

err_alloc:
	rte_free(vf->vf_res);
	vf->vsi_res = NULL;
err_api:
	rte_free(vf->aq_resp);
err_aq:
	i40e_shutdown_adminq(hw); /* ignore error */
err:
	return -1;
}

static int
i40evf_uninit_vf(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);

	PMD_INIT_FUNC_TRACE();

	if (hw->adapter_stopped == 0)
		i40evf_dev_close(dev);
	rte_free(vf->vf_res);
	vf->vf_res = NULL;
	rte_free(vf->aq_resp);
	vf->aq_resp = NULL;

	return 0;
}

static void
i40evf_handle_pf_event(struct rte_eth_dev *dev, uint8_t *msg,
		__rte_unused uint16_t msglen)
{
	struct virtchnl_pf_event *pf_msg =
			(struct virtchnl_pf_event *)msg;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);

	switch (pf_msg->event) {
	case VIRTCHNL_EVENT_RESET_IMPENDING:
		PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_RESET_IMPENDING event");
		_rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RESET,
					      NULL);
		break;
	case VIRTCHNL_EVENT_LINK_CHANGE:
		PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_LINK_CHANGE event");
		vf->link_up = pf_msg->event_data.link_event.link_status;
		vf->link_speed = pf_msg->event_data.link_event.link_speed;
		break;
	case VIRTCHNL_EVENT_PF_DRIVER_CLOSE:
		PMD_DRV_LOG(DEBUG, "VIRTCHNL_EVENT_PF_DRIVER_CLOSE event");
		break;
	default:
		PMD_DRV_LOG(ERR, " unknown event received %u", pf_msg->event);
		break;
	}
}

static void
i40evf_handle_aq_msg(struct rte_eth_dev *dev)
{
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_arq_event_info info;
	uint16_t pending, aq_opc;
	enum virtchnl_ops msg_opc;
	enum i40e_status_code msg_ret;
	int ret;

	info.buf_len = I40E_AQ_BUF_SZ;
	if (!vf->aq_resp) {
		PMD_DRV_LOG(ERR, "Buffer for adminq resp should not be NULL");
		return;
	}
	info.msg_buf = vf->aq_resp;

	pending = 1;
	while (pending) {
		ret = i40e_clean_arq_element(hw, &info, &pending);

		if (ret != I40E_SUCCESS) {
			PMD_DRV_LOG(INFO, "Failed to read msg from AdminQ,"
				    "ret: %d", ret);
			break;
		}
		aq_opc = rte_le_to_cpu_16(info.desc.opcode);
		/* For the message sent from pf to vf, opcode is stored in
		 * cookie_high of struct i40e_aq_desc, while return error code
		 * are stored in cookie_low, Which is done by
		 * i40e_aq_send_msg_to_vf in PF driver.*/
		msg_opc = (enum virtchnl_ops)rte_le_to_cpu_32(
						  info.desc.cookie_high);
		msg_ret = (enum i40e_status_code)rte_le_to_cpu_32(
						  info.desc.cookie_low);
		switch (aq_opc) {
		case i40e_aqc_opc_send_msg_to_vf:
			if (msg_opc == VIRTCHNL_OP_EVENT)
				/* process event*/
				i40evf_handle_pf_event(dev, info.msg_buf,
						       info.msg_len);
			else {
				/* read message and it's expected one */
				if (msg_opc == vf->pend_cmd) {
					vf->cmd_retval = msg_ret;
					/* prevent compiler reordering */
					rte_compiler_barrier();
					_clear_cmd(vf);
				} else
					PMD_DRV_LOG(ERR, "command mismatch,"
						"expect %u, get %u",
						vf->pend_cmd, msg_opc);
				PMD_DRV_LOG(DEBUG, "adminq response is received,"
					     " opcode = %d", msg_opc);
			}
			break;
		default:
			PMD_DRV_LOG(ERR, "Request %u is not supported yet",
				    aq_opc);
			break;
		}
	}
}

/**
 * Interrupt handler triggered by NIC  for handling
 * specific interrupt. Only adminq interrupt is processed in VF.
 *
 * @param handle
 *  Pointer to interrupt handle.
 * @param param
 *  The address of parameter (struct rte_eth_dev *) regsitered before.
 *
 * @return
 *  void
 */
static void
i40evf_dev_alarm_handler(void *param)
{
	struct rte_eth_dev *dev = (struct rte_eth_dev *)param;
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	uint32_t icr0;

	i40evf_disable_irq0(hw);

	/* read out interrupt causes */
	icr0 = I40E_READ_REG(hw, I40E_VFINT_ICR01);

	/* No interrupt event indicated */
	if (!(icr0 & I40E_VFINT_ICR01_INTEVENT_MASK))
		goto done;

	if (icr0 & I40E_VFINT_ICR01_ADMINQ_MASK) {
		PMD_DRV_LOG(DEBUG, "ICR01_ADMINQ is reported");
		i40evf_handle_aq_msg(dev);
	}

	/* Link Status Change interrupt */
	if (icr0 & I40E_VFINT_ICR01_LINK_STAT_CHANGE_MASK)
		PMD_DRV_LOG(DEBUG, "LINK_STAT_CHANGE is reported,"
				   " do nothing");

done:
	i40evf_enable_irq0(hw);
	rte_eal_alarm_set(I40EVF_ALARM_INTERVAL,
			  i40evf_dev_alarm_handler, dev);
}

static int
i40evf_dev_init(struct rte_eth_dev *eth_dev)
{
	struct i40e_hw *hw
		= I40E_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);

	PMD_INIT_FUNC_TRACE();

	/* assign ops func pointer */
	eth_dev->dev_ops = &i40evf_eth_dev_ops;
	eth_dev->rx_pkt_burst = &i40e_recv_pkts;
	eth_dev->tx_pkt_burst = &i40e_xmit_pkts;

	/*
	 * For secondary processes, we don't initialise any further as primary
	 * has already done this work.
	 */
	if (rte_eal_process_type() != RTE_PROC_PRIMARY){
		i40e_set_rx_function(eth_dev);
		i40e_set_tx_function(eth_dev);
		return 0;
	}
	i40e_set_default_ptype_table(eth_dev);
	i40e_set_default_pctype_table(eth_dev);
	rte_eth_copy_pci_info(eth_dev, pci_dev);

	hw->vendor_id = pci_dev->id.vendor_id;
	hw->device_id = pci_dev->id.device_id;
	hw->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
	hw->subsystem_device_id = pci_dev->id.subsystem_device_id;
	hw->bus.device = pci_dev->addr.devid;
	hw->bus.func = pci_dev->addr.function;
	hw->hw_addr = (void *)pci_dev->mem_resource[0].addr;
	hw->adapter_stopped = 0;

	if(i40evf_init_vf(eth_dev) != 0) {
		PMD_INIT_LOG(ERR, "Init vf failed");
		return -1;
	}

	rte_eal_alarm_set(I40EVF_ALARM_INTERVAL,
			  i40evf_dev_alarm_handler, eth_dev);

	/* configure and enable device interrupt */
	i40evf_enable_irq0(hw);

	/* copy mac addr */
	eth_dev->data->mac_addrs = rte_zmalloc("i40evf_mac",
					ETHER_ADDR_LEN * I40E_NUM_MACADDR_MAX,
					0);
	if (eth_dev->data->mac_addrs == NULL) {
		PMD_INIT_LOG(ERR, "Failed to allocate %d bytes needed to"
				" store MAC addresses",
				ETHER_ADDR_LEN * I40E_NUM_MACADDR_MAX);
		return -ENOMEM;
	}
	ether_addr_copy((struct ether_addr *)hw->mac.addr,
			&eth_dev->data->mac_addrs[0]);

	return 0;
}

static int
i40evf_dev_uninit(struct rte_eth_dev *eth_dev)
{
	PMD_INIT_FUNC_TRACE();

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return -EPERM;

	eth_dev->dev_ops = NULL;
	eth_dev->rx_pkt_burst = NULL;
	eth_dev->tx_pkt_burst = NULL;

	if (i40evf_uninit_vf(eth_dev) != 0) {
		PMD_INIT_LOG(ERR, "i40evf_uninit_vf failed");
		return -1;
	}

	return 0;
}

static int eth_i40evf_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 i40e_adapter), i40evf_dev_init);
}

static int eth_i40evf_pci_remove(struct rte_pci_device *pci_dev)
{
	return rte_eth_dev_pci_generic_remove(pci_dev, i40evf_dev_uninit);
}

/*
 * virtual function driver struct
 */
static struct rte_pci_driver rte_i40evf_pmd = {
	.id_table = pci_id_i40evf_map,
	.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_IOVA_AS_VA,
	.probe = eth_i40evf_pci_probe,
	.remove = eth_i40evf_pci_remove,
};

RTE_PMD_REGISTER_PCI(net_i40e_vf, rte_i40evf_pmd);
RTE_PMD_REGISTER_PCI_TABLE(net_i40e_vf, pci_id_i40evf_map);
RTE_PMD_REGISTER_KMOD_DEP(net_i40e_vf, "* igb_uio | vfio-pci");

static int
i40evf_dev_configure(struct rte_eth_dev *dev)
{
	struct i40e_adapter *ad =
		I40E_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);

	/* Initialize to TRUE. If any of Rx queues doesn't meet the bulk
	 * allocation or vector Rx preconditions we will reset it.
	 */
	ad->rx_bulk_alloc_allowed = true;
	ad->rx_vec_allowed = true;
	ad->tx_simple_allowed = true;
	ad->tx_vec_allowed = true;

	return i40evf_init_vlan(dev);
}

static int
i40evf_init_vlan(struct rte_eth_dev *dev)
{
	/* Apply vlan offload setting */
	i40evf_vlan_offload_set(dev, ETH_VLAN_STRIP_MASK);

	return 0;
}

static int
i40evf_vlan_offload_set(struct rte_eth_dev *dev, int mask)
{
	struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);

	if (!(vf->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN))
		return -ENOTSUP;

	/* Vlan stripping setting */
	if (mask & ETH_VLAN_STRIP_MASK) {
		/* Enable or disable VLAN stripping */
		if (dev_conf->rxmode.offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
			i40evf_enable_vlan_strip(dev);
		else
			i40evf_disable_vlan_strip(dev);
	}

	return 0;
}

static int
i40evf_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
{
	struct i40e_rx_queue *rxq;
	int err;
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);

	PMD_INIT_FUNC_TRACE();

	rxq = dev->data->rx_queues[rx_queue_id];

	err = i40e_alloc_rx_queue_mbufs(rxq);
	if (err) {
		PMD_DRV_LOG(ERR, "Failed to allocate RX queue mbuf");
		return err;
	}

	rte_wmb();

	/* Init the RX tail register. */
	I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);
	I40EVF_WRITE_FLUSH(hw);

	/* Ready to switch the queue on */
	err = i40evf_switch_queue(dev, TRUE, rx_queue_id, TRUE);
	if (err) {
		PMD_DRV_LOG(ERR, "Failed to switch RX queue %u on",
			    rx_queue_id);
		return err;
	}
	dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;

	return 0;
}

static int
i40evf_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
{
	struct i40e_rx_queue *rxq;
	int err;

	rxq = dev->data->rx_queues[rx_queue_id];

	err = i40evf_switch_queue(dev, TRUE, rx_queue_id, FALSE);
	if (err) {
		PMD_DRV_LOG(ERR, "Failed to switch RX queue %u off",
			    rx_queue_id);
		return err;
	}

	i40e_rx_queue_release_mbufs(rxq);
	i40e_reset_rx_queue(rxq);
	dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;

	return 0;
}

static int
i40evf_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
{
	int err;

	PMD_INIT_FUNC_TRACE();

	/* Ready to switch the queue on */
	err = i40evf_switch_queue(dev, FALSE, tx_queue_id, TRUE);
	if (err) {
		PMD_DRV_LOG(ERR, "Failed to switch TX queue %u on",
			    tx_queue_id);
		return err;
	}
	dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;

	return 0;
}

static int
i40evf_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
{
	struct i40e_tx_queue *txq;
	int err;

	txq = dev->data->tx_queues[tx_queue_id];

	err = i40evf_switch_queue(dev, FALSE, tx_queue_id, FALSE);
	if (err) {
		PMD_DRV_LOG(ERR, "Failed to switch TX queue %u off",
			    tx_queue_id);
		return err;
	}

	i40e_tx_queue_release_mbufs(txq);
	i40e_reset_tx_queue(txq);
	dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;

	return 0;
}

static int
i40evf_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
{
	int ret;

	if (on)
		ret = i40evf_add_vlan(dev, vlan_id);
	else
		ret = i40evf_del_vlan(dev,vlan_id);

	return ret;
}

static int
i40evf_rxq_init(struct rte_eth_dev *dev, struct i40e_rx_queue *rxq)
{
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct rte_eth_dev_data *dev_data = dev->data;
	struct rte_pktmbuf_pool_private *mbp_priv;
	uint16_t buf_size, len;

	rxq->qrx_tail = hw->hw_addr + I40E_QRX_TAIL1(rxq->queue_id);
	I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);
	I40EVF_WRITE_FLUSH(hw);

	/* Calculate the maximum packet length allowed */
	mbp_priv = rte_mempool_get_priv(rxq->mp);
	buf_size = (uint16_t)(mbp_priv->mbuf_data_room_size -
					RTE_PKTMBUF_HEADROOM);
	rxq->hs_mode = i40e_header_split_none;
	rxq->rx_hdr_len = 0;
	rxq->rx_buf_len = RTE_ALIGN(buf_size, (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
	len = rxq->rx_buf_len * I40E_MAX_CHAINED_RX_BUFFERS;
	rxq->max_pkt_len = RTE_MIN(len,
		dev_data->dev_conf.rxmode.max_rx_pkt_len);

	/**
	 * Check if the jumbo frame and maximum packet length are set correctly
	 */
	if (dev_data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
		if (rxq->max_pkt_len <= ETHER_MAX_LEN ||
		    rxq->max_pkt_len > I40E_FRAME_SIZE_MAX) {
			PMD_DRV_LOG(ERR, "maximum packet length must be "
				"larger than %u and smaller than %u, as jumbo "
				"frame is enabled", (uint32_t)ETHER_MAX_LEN,
					(uint32_t)I40E_FRAME_SIZE_MAX);
			return I40E_ERR_CONFIG;
		}
	} else {
		if (rxq->max_pkt_len < ETHER_MIN_LEN ||
		    rxq->max_pkt_len > ETHER_MAX_LEN) {
			PMD_DRV_LOG(ERR, "maximum packet length must be "
				"larger than %u and smaller than %u, as jumbo "
				"frame is disabled", (uint32_t)ETHER_MIN_LEN,
						(uint32_t)ETHER_MAX_LEN);
			return I40E_ERR_CONFIG;
		}
	}

	if ((dev_data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_SCATTER) ||
	    (rxq->max_pkt_len + 2 * I40E_VLAN_TAG_SIZE) > buf_size) {
		dev_data->scattered_rx = 1;
	}

	return 0;
}

static int
i40evf_rx_init(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	uint16_t i;
	int ret = I40E_SUCCESS;
	struct i40e_rx_queue **rxq =
		(struct i40e_rx_queue **)dev->data->rx_queues;

	i40evf_config_rss(vf);
	for (i = 0; i < dev->data->nb_rx_queues; i++) {
		if (!rxq[i] || !rxq[i]->q_set)
			continue;
		ret = i40evf_rxq_init(dev, rxq[i]);
		if (ret != I40E_SUCCESS)
			break;
	}
	if (ret == I40E_SUCCESS)
		i40e_set_rx_function(dev);

	return ret;
}

static void
i40evf_tx_init(struct rte_eth_dev *dev)
{
	uint16_t i;
	struct i40e_tx_queue **txq =
		(struct i40e_tx_queue **)dev->data->tx_queues;
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);

	for (i = 0; i < dev->data->nb_tx_queues; i++)
		txq[i]->qtx_tail = hw->hw_addr + I40E_QTX_TAIL1(i);

	i40e_set_tx_function(dev);
}

static inline void
i40evf_enable_queues_intr(struct rte_eth_dev *dev)
{
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;

	if (!rte_intr_allow_others(intr_handle)) {
		I40E_WRITE_REG(hw,
			       I40E_VFINT_DYN_CTL01,
			       I40E_VFINT_DYN_CTL01_INTENA_MASK |
			       I40E_VFINT_DYN_CTL01_CLEARPBA_MASK |
			       I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
		I40EVF_WRITE_FLUSH(hw);
		return;
	}

	I40EVF_WRITE_FLUSH(hw);
}

static inline void
i40evf_disable_queues_intr(struct rte_eth_dev *dev)
{
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;

	if (!rte_intr_allow_others(intr_handle)) {
		I40E_WRITE_REG(hw, I40E_VFINT_DYN_CTL01,
			       I40E_VFINT_DYN_CTL01_ITR_INDX_MASK);
		I40EVF_WRITE_FLUSH(hw);
		return;
	}

	I40EVF_WRITE_FLUSH(hw);
}

static int
i40evf_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
{
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	uint16_t interval =
		i40e_calc_itr_interval(0, 0);
	uint16_t msix_intr;

	msix_intr = intr_handle->intr_vec[queue_id];
	if (msix_intr == I40E_MISC_VEC_ID)
		I40E_WRITE_REG(hw, I40E_VFINT_DYN_CTL01,
			       I40E_VFINT_DYN_CTL01_INTENA_MASK |
			       I40E_VFINT_DYN_CTL01_CLEARPBA_MASK |
			       (0 << I40E_VFINT_DYN_CTL01_ITR_INDX_SHIFT) |
			       (interval <<
				I40E_VFINT_DYN_CTL01_INTERVAL_SHIFT));
	else
		I40E_WRITE_REG(hw,
			       I40E_VFINT_DYN_CTLN1(msix_intr -
						    I40E_RX_VEC_START),
			       I40E_VFINT_DYN_CTLN1_INTENA_MASK |
			       I40E_VFINT_DYN_CTLN1_CLEARPBA_MASK |
			       (0 << I40E_VFINT_DYN_CTLN1_ITR_INDX_SHIFT) |
			       (interval <<
				I40E_VFINT_DYN_CTLN1_INTERVAL_SHIFT));

	I40EVF_WRITE_FLUSH(hw);

	return 0;
}

static int
i40evf_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
{
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	uint16_t msix_intr;

	msix_intr = intr_handle->intr_vec[queue_id];
	if (msix_intr == I40E_MISC_VEC_ID)
		I40E_WRITE_REG(hw, I40E_VFINT_DYN_CTL01, 0);
	else
		I40E_WRITE_REG(hw,
			       I40E_VFINT_DYN_CTLN1(msix_intr -
						    I40E_RX_VEC_START),
			       0);

	I40EVF_WRITE_FLUSH(hw);

	return 0;
}

static void
i40evf_add_del_all_mac_addr(struct rte_eth_dev *dev, bool add)
{
	struct virtchnl_ether_addr_list *list;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	int err, i, j;
	int next_begin = 0;
	int begin = 0;
	uint32_t len;
	struct ether_addr *addr;
	struct vf_cmd_info args;

	do {
		j = 0;
		len = sizeof(struct virtchnl_ether_addr_list);
		for (i = begin; i < I40E_NUM_MACADDR_MAX; i++, next_begin++) {
			if (is_zero_ether_addr(&dev->data->mac_addrs[i]))
				continue;
			len += sizeof(struct virtchnl_ether_addr);
			if (len >= I40E_AQ_BUF_SZ) {
				next_begin = i + 1;
				break;
			}
		}

		list = rte_zmalloc("i40evf_del_mac_buffer", len, 0);
		if (!list) {
			PMD_DRV_LOG(ERR, "fail to allocate memory");
			return;
		}

		for (i = begin; i < next_begin; i++) {
			addr = &dev->data->mac_addrs[i];
			if (is_zero_ether_addr(addr))
				continue;
			rte_memcpy(list->list[j].addr, addr->addr_bytes,
					 sizeof(addr->addr_bytes));
			PMD_DRV_LOG(DEBUG, "add/rm mac:%x:%x:%x:%x:%x:%x",
				    addr->addr_bytes[0], addr->addr_bytes[1],
				    addr->addr_bytes[2], addr->addr_bytes[3],
				    addr->addr_bytes[4], addr->addr_bytes[5]);
			j++;
		}
		list->vsi_id = vf->vsi_res->vsi_id;
		list->num_elements = j;
		args.ops = add ? VIRTCHNL_OP_ADD_ETH_ADDR :
			   VIRTCHNL_OP_DEL_ETH_ADDR;
		args.in_args = (uint8_t *)list;
		args.in_args_size = len;
		args.out_buffer = vf->aq_resp;
		args.out_size = I40E_AQ_BUF_SZ;
		err = i40evf_execute_vf_cmd(dev, &args);
		if (err) {
			PMD_DRV_LOG(ERR, "fail to execute command %s",
				    add ? "OP_ADD_ETHER_ADDRESS" :
				    "OP_DEL_ETHER_ADDRESS");
		} else {
			if (add)
				vf->vsi.mac_num++;
			else
				vf->vsi.mac_num--;
		}
		rte_free(list);
		begin = next_begin;
	} while (begin < I40E_NUM_MACADDR_MAX);
}

static int
i40evf_dev_start(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
	uint32_t intr_vector = 0;

	PMD_INIT_FUNC_TRACE();

	hw->adapter_stopped = 0;

	vf->max_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
	vf->num_queue_pairs = RTE_MAX(dev->data->nb_rx_queues,
					dev->data->nb_tx_queues);

	/* check and configure queue intr-vector mapping */
	if (rte_intr_cap_multiple(intr_handle) &&
	    dev->data->dev_conf.intr_conf.rxq) {
		intr_vector = dev->data->nb_rx_queues;
		if (rte_intr_efd_enable(intr_handle, intr_vector))
			return -1;
	}

	if (rte_intr_dp_is_en(intr_handle) && !intr_handle->intr_vec) {
		intr_handle->intr_vec =
			rte_zmalloc("intr_vec",
				    dev->data->nb_rx_queues * sizeof(int), 0);
		if (!intr_handle->intr_vec) {
			PMD_INIT_LOG(ERR, "Failed to allocate %d rx_queues"
				     " intr_vec", dev->data->nb_rx_queues);
			return -ENOMEM;
		}
	}

	if (i40evf_rx_init(dev) != 0){
		PMD_DRV_LOG(ERR, "failed to do RX init");
		return -1;
	}

	i40evf_tx_init(dev);

	if (i40evf_configure_vsi_queues(dev) != 0) {
		PMD_DRV_LOG(ERR, "configure queues failed");
		goto err_queue;
	}
	if (i40evf_config_irq_map(dev)) {
		PMD_DRV_LOG(ERR, "config_irq_map failed");
		goto err_queue;
	}

	/* Set all mac addrs */
	i40evf_add_del_all_mac_addr(dev, TRUE);
	/* Set all multicast addresses */
	i40evf_add_del_mc_addr_list(dev, vf->mc_addrs, vf->mc_addrs_num,
				TRUE);

	if (i40evf_start_queues(dev) != 0) {
		PMD_DRV_LOG(ERR, "enable queues failed");
		goto err_mac;
	}

	/* only enable interrupt in rx interrupt mode */
	if (dev->data->dev_conf.intr_conf.rxq != 0)
		rte_intr_enable(intr_handle);

	i40evf_enable_queues_intr(dev);

	return 0;

err_mac:
	i40evf_add_del_all_mac_addr(dev, FALSE);
	i40evf_add_del_mc_addr_list(dev, vf->mc_addrs, vf->mc_addrs_num,
				FALSE);
err_queue:
	return -1;
}

static void
i40evf_dev_stop(struct rte_eth_dev *dev)
{
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);

	PMD_INIT_FUNC_TRACE();

	if (dev->data->dev_conf.intr_conf.rxq != 0)
		rte_intr_disable(intr_handle);

	if (hw->adapter_stopped == 1)
		return;
	i40evf_stop_queues(dev);
	i40evf_disable_queues_intr(dev);
	i40e_dev_clear_queues(dev);

	/* Clean datapath event and queue/vec mapping */
	rte_intr_efd_disable(intr_handle);
	if (intr_handle->intr_vec) {
		rte_free(intr_handle->intr_vec);
		intr_handle->intr_vec = NULL;
	}
	/* remove all mac addrs */
	i40evf_add_del_all_mac_addr(dev, FALSE);
	/* remove all multicast addresses */
	i40evf_add_del_mc_addr_list(dev, vf->mc_addrs, vf->mc_addrs_num,
				FALSE);
	hw->adapter_stopped = 1;

}

static int
i40evf_dev_link_update(struct rte_eth_dev *dev,
		       __rte_unused int wait_to_complete)
{
	struct rte_eth_link new_link;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	/*
	 * DPDK pf host provide interfacet to acquire link status
	 * while Linux driver does not
	 */

	memset(&new_link, 0, sizeof(new_link));
	/* Linux driver PF host */
	switch (vf->link_speed) {
	case I40E_LINK_SPEED_100MB:
		new_link.link_speed = ETH_SPEED_NUM_100M;
		break;
	case I40E_LINK_SPEED_1GB:
		new_link.link_speed = ETH_SPEED_NUM_1G;
		break;
	case I40E_LINK_SPEED_10GB:
		new_link.link_speed = ETH_SPEED_NUM_10G;
		break;
	case I40E_LINK_SPEED_20GB:
		new_link.link_speed = ETH_SPEED_NUM_20G;
		break;
	case I40E_LINK_SPEED_25GB:
		new_link.link_speed = ETH_SPEED_NUM_25G;
		break;
	case I40E_LINK_SPEED_40GB:
		new_link.link_speed = ETH_SPEED_NUM_40G;
		break;
	default:
		new_link.link_speed = ETH_SPEED_NUM_100M;
		break;
	}
	/* full duplex only */
	new_link.link_duplex = ETH_LINK_FULL_DUPLEX;
	new_link.link_status = vf->link_up ? ETH_LINK_UP :
					     ETH_LINK_DOWN;
	new_link.link_autoneg =
		!(dev->data->dev_conf.link_speeds & ETH_LINK_SPEED_FIXED);

	return rte_eth_linkstatus_set(dev, &new_link);
}

static void
i40evf_dev_promiscuous_enable(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	int ret;

	/* If enabled, just return */
	if (vf->promisc_unicast_enabled)
		return;

	ret = i40evf_config_promisc(dev, 1, vf->promisc_multicast_enabled);
	if (ret == 0)
		vf->promisc_unicast_enabled = TRUE;
}

static void
i40evf_dev_promiscuous_disable(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	int ret;

	/* If disabled, just return */
	if (!vf->promisc_unicast_enabled)
		return;

	ret = i40evf_config_promisc(dev, 0, vf->promisc_multicast_enabled);
	if (ret == 0)
		vf->promisc_unicast_enabled = FALSE;
}

static void
i40evf_dev_allmulticast_enable(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	int ret;

	/* If enabled, just return */
	if (vf->promisc_multicast_enabled)
		return;

	ret = i40evf_config_promisc(dev, vf->promisc_unicast_enabled, 1);
	if (ret == 0)
		vf->promisc_multicast_enabled = TRUE;
}

static void
i40evf_dev_allmulticast_disable(struct rte_eth_dev *dev)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	int ret;

	/* If enabled, just return */
	if (!vf->promisc_multicast_enabled)
		return;

	ret = i40evf_config_promisc(dev, vf->promisc_unicast_enabled, 0);
	if (ret == 0)
		vf->promisc_multicast_enabled = FALSE;
}

static void
i40evf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);

	dev_info->max_rx_queues = vf->vsi_res->num_queue_pairs;
	dev_info->max_tx_queues = vf->vsi_res->num_queue_pairs;
	dev_info->min_rx_bufsize = I40E_BUF_SIZE_MIN;
	dev_info->max_rx_pktlen = I40E_FRAME_SIZE_MAX;
	dev_info->hash_key_size = (I40E_VFQF_HKEY_MAX_INDEX + 1) * sizeof(uint32_t);
	dev_info->reta_size = ETH_RSS_RETA_SIZE_64;
	dev_info->flow_type_rss_offloads = vf->adapter->flow_types_mask;
	dev_info->max_mac_addrs = I40E_NUM_MACADDR_MAX;
	dev_info->rx_queue_offload_capa = 0;
	dev_info->rx_offload_capa =
		DEV_RX_OFFLOAD_VLAN_STRIP |
		DEV_RX_OFFLOAD_QINQ_STRIP |
		DEV_RX_OFFLOAD_IPV4_CKSUM |
		DEV_RX_OFFLOAD_UDP_CKSUM |
		DEV_RX_OFFLOAD_TCP_CKSUM |
		DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
		DEV_RX_OFFLOAD_SCATTER |
		DEV_RX_OFFLOAD_JUMBO_FRAME |
		DEV_RX_OFFLOAD_VLAN_FILTER;

	dev_info->tx_queue_offload_capa = 0;
	dev_info->tx_offload_capa =
		DEV_TX_OFFLOAD_VLAN_INSERT |
		DEV_TX_OFFLOAD_QINQ_INSERT |
		DEV_TX_OFFLOAD_IPV4_CKSUM |
		DEV_TX_OFFLOAD_UDP_CKSUM |
		DEV_TX_OFFLOAD_TCP_CKSUM |
		DEV_TX_OFFLOAD_SCTP_CKSUM |
		DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
		DEV_TX_OFFLOAD_TCP_TSO |
		DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
		DEV_TX_OFFLOAD_GRE_TNL_TSO |
		DEV_TX_OFFLOAD_IPIP_TNL_TSO |
		DEV_TX_OFFLOAD_GENEVE_TNL_TSO |
		DEV_TX_OFFLOAD_MULTI_SEGS;

	dev_info->default_rxconf = (struct rte_eth_rxconf) {
		.rx_thresh = {
			.pthresh = I40E_DEFAULT_RX_PTHRESH,
			.hthresh = I40E_DEFAULT_RX_HTHRESH,
			.wthresh = I40E_DEFAULT_RX_WTHRESH,
		},
		.rx_free_thresh = I40E_DEFAULT_RX_FREE_THRESH,
		.rx_drop_en = 0,
		.offloads = 0,
	};

	dev_info->default_txconf = (struct rte_eth_txconf) {
		.tx_thresh = {
			.pthresh = I40E_DEFAULT_TX_PTHRESH,
			.hthresh = I40E_DEFAULT_TX_HTHRESH,
			.wthresh = I40E_DEFAULT_TX_WTHRESH,
		},
		.tx_free_thresh = I40E_DEFAULT_TX_FREE_THRESH,
		.tx_rs_thresh = I40E_DEFAULT_TX_RSBIT_THRESH,
		.offloads = 0,
	};

	dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
		.nb_max = I40E_MAX_RING_DESC,
		.nb_min = I40E_MIN_RING_DESC,
		.nb_align = I40E_ALIGN_RING_DESC,
	};

	dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
		.nb_max = I40E_MAX_RING_DESC,
		.nb_min = I40E_MIN_RING_DESC,
		.nb_align = I40E_ALIGN_RING_DESC,
	};
}

static int
i40evf_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
{
	int ret;
	struct i40e_eth_stats *pstats = NULL;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_vsi *vsi = &vf->vsi;

	ret = i40evf_query_stats(dev, &pstats);
	if (ret == 0) {
		i40evf_update_stats(vsi, pstats);

		stats->ipackets = pstats->rx_unicast + pstats->rx_multicast +
						pstats->rx_broadcast;
		stats->opackets = pstats->tx_broadcast + pstats->tx_multicast +
						pstats->tx_unicast;
		stats->imissed = pstats->rx_discards;
		stats->oerrors = pstats->tx_errors + pstats->tx_discards;
		stats->ibytes = pstats->rx_bytes;
		stats->obytes = pstats->tx_bytes;
	} else {
		PMD_DRV_LOG(ERR, "Get statistics failed");
	}
	return ret;
}

static void
i40evf_dev_close(struct rte_eth_dev *dev)
{
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);

	i40evf_dev_stop(dev);
	i40e_dev_free_queues(dev);
	/*
	 * disable promiscuous mode before reset vf
	 * it is a workaround solution when work with kernel driver
	 * and it is not the normal way
	 */
	i40evf_dev_promiscuous_disable(dev);
	i40evf_dev_allmulticast_disable(dev);

	i40evf_reset_vf(hw);
	i40e_shutdown_adminq(hw);
	i40evf_disable_irq0(hw);
	rte_eal_alarm_cancel(i40evf_dev_alarm_handler, dev);
}

/*
 * Reset VF device only to re-initialize resources in PMD layer
 */
static int
i40evf_dev_reset(struct rte_eth_dev *dev)
{
	int ret;

	ret = i40evf_dev_uninit(dev);
	if (ret)
		return ret;

	ret = i40evf_dev_init(dev);

	return ret;
}

static int
i40evf_get_rss_lut(struct i40e_vsi *vsi, uint8_t *lut, uint16_t lut_size)
{
	struct i40e_vf *vf = I40E_VSI_TO_VF(vsi);
	struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
	int ret;

	if (!lut)
		return -EINVAL;

	if (vf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
		ret = i40e_aq_get_rss_lut(hw, vsi->vsi_id, FALSE,
					  lut, lut_size);
		if (ret) {
			PMD_DRV_LOG(ERR, "Failed to get RSS lookup table");
			return ret;
		}
	} else {
		uint32_t *lut_dw = (uint32_t *)lut;
		uint16_t i, lut_size_dw = lut_size / 4;

		for (i = 0; i < lut_size_dw; i++)
			lut_dw[i] = I40E_READ_REG(hw, I40E_VFQF_HLUT(i));
	}

	return 0;
}

static int
i40evf_set_rss_lut(struct i40e_vsi *vsi, uint8_t *lut, uint16_t lut_size)
{
	struct i40e_vf *vf;
	struct i40e_hw *hw;
	int ret;

	if (!vsi || !lut)
		return -EINVAL;

	vf = I40E_VSI_TO_VF(vsi);
	hw = I40E_VSI_TO_HW(vsi);

	if (vf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
		ret = i40e_aq_set_rss_lut(hw, vsi->vsi_id, FALSE,
					  lut, lut_size);
		if (ret) {
			PMD_DRV_LOG(ERR, "Failed to set RSS lookup table");
			return ret;
		}
	} else {
		uint32_t *lut_dw = (uint32_t *)lut;
		uint16_t i, lut_size_dw = lut_size / 4;

		for (i = 0; i < lut_size_dw; i++)
			I40E_WRITE_REG(hw, I40E_VFQF_HLUT(i), lut_dw[i]);
		I40EVF_WRITE_FLUSH(hw);
	}

	return 0;
}

static int
i40evf_dev_rss_reta_update(struct rte_eth_dev *dev,
			   struct rte_eth_rss_reta_entry64 *reta_conf,
			   uint16_t reta_size)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	uint8_t *lut;
	uint16_t i, idx, shift;
	int ret;

	if (reta_size != ETH_RSS_RETA_SIZE_64) {
		PMD_DRV_LOG(ERR, "The size of hash lookup table configured "
			"(%d) doesn't match the number of hardware can "
			"support (%d)", reta_size, ETH_RSS_RETA_SIZE_64);
		return -EINVAL;
	}

	lut = rte_zmalloc("i40e_rss_lut", reta_size, 0);
	if (!lut) {
		PMD_DRV_LOG(ERR, "No memory can be allocated");
		return -ENOMEM;
	}
	ret = i40evf_get_rss_lut(&vf->vsi, lut, reta_size);
	if (ret)
		goto out;
	for (i = 0; i < reta_size; i++) {
		idx = i / RTE_RETA_GROUP_SIZE;
		shift = i % RTE_RETA_GROUP_SIZE;
		if (reta_conf[idx].mask & (1ULL << shift))
			lut[i] = reta_conf[idx].reta[shift];
	}
	ret = i40evf_set_rss_lut(&vf->vsi, lut, reta_size);

out:
	rte_free(lut);

	return ret;
}

static int
i40evf_dev_rss_reta_query(struct rte_eth_dev *dev,
			  struct rte_eth_rss_reta_entry64 *reta_conf,
			  uint16_t reta_size)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	uint16_t i, idx, shift;
	uint8_t *lut;
	int ret;

	if (reta_size != ETH_RSS_RETA_SIZE_64) {
		PMD_DRV_LOG(ERR, "The size of hash lookup table configured "
			"(%d) doesn't match the number of hardware can "
			"support (%d)", reta_size, ETH_RSS_RETA_SIZE_64);
		return -EINVAL;
	}

	lut = rte_zmalloc("i40e_rss_lut", reta_size, 0);
	if (!lut) {
		PMD_DRV_LOG(ERR, "No memory can be allocated");
		return -ENOMEM;
	}

	ret = i40evf_get_rss_lut(&vf->vsi, lut, reta_size);
	if (ret)
		goto out;
	for (i = 0; i < reta_size; i++) {
		idx = i / RTE_RETA_GROUP_SIZE;
		shift = i % RTE_RETA_GROUP_SIZE;
		if (reta_conf[idx].mask & (1ULL << shift))
			reta_conf[idx].reta[shift] = lut[i];
	}

out:
	rte_free(lut);

	return ret;
}

static int
i40evf_set_rss_key(struct i40e_vsi *vsi, uint8_t *key, uint8_t key_len)
{
	struct i40e_vf *vf = I40E_VSI_TO_VF(vsi);
	struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
	int ret = 0;

	if (!key || key_len == 0) {
		PMD_DRV_LOG(DEBUG, "No key to be configured");
		return 0;
	} else if (key_len != (I40E_VFQF_HKEY_MAX_INDEX + 1) *
		sizeof(uint32_t)) {
		PMD_DRV_LOG(ERR, "Invalid key length %u", key_len);
		return -EINVAL;
	}

	if (vf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
		struct i40e_aqc_get_set_rss_key_data *key_dw =
			(struct i40e_aqc_get_set_rss_key_data *)key;

		ret = i40e_aq_set_rss_key(hw, vsi->vsi_id, key_dw);
		if (ret)
			PMD_INIT_LOG(ERR, "Failed to configure RSS key "
				     "via AQ");
	} else {
		uint32_t *hash_key = (uint32_t *)key;
		uint16_t i;

		for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
			i40e_write_rx_ctl(hw, I40E_VFQF_HKEY(i), hash_key[i]);
		I40EVF_WRITE_FLUSH(hw);
	}

	return ret;
}

static int
i40evf_get_rss_key(struct i40e_vsi *vsi, uint8_t *key, uint8_t *key_len)
{
	struct i40e_vf *vf = I40E_VSI_TO_VF(vsi);
	struct i40e_hw *hw = I40E_VSI_TO_HW(vsi);
	int ret;

	if (!key || !key_len)
		return -EINVAL;

	if (vf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
		ret = i40e_aq_get_rss_key(hw, vsi->vsi_id,
			(struct i40e_aqc_get_set_rss_key_data *)key);
		if (ret) {
			PMD_INIT_LOG(ERR, "Failed to get RSS key via AQ");
			return ret;
		}
	} else {
		uint32_t *key_dw = (uint32_t *)key;
		uint16_t i;

		for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
			key_dw[i] = i40e_read_rx_ctl(hw, I40E_VFQF_HKEY(i));
	}
	*key_len = (I40E_VFQF_HKEY_MAX_INDEX + 1) * sizeof(uint32_t);

	return 0;
}

static int
i40evf_hw_rss_hash_set(struct i40e_vf *vf, struct rte_eth_rss_conf *rss_conf)
{
	struct i40e_hw *hw = I40E_VF_TO_HW(vf);
	uint64_t hena;
	int ret;

	ret = i40evf_set_rss_key(&vf->vsi, rss_conf->rss_key,
				 rss_conf->rss_key_len);
	if (ret)
		return ret;

	hena = i40e_config_hena(vf->adapter, rss_conf->rss_hf);
	i40e_write_rx_ctl(hw, I40E_VFQF_HENA(0), (uint32_t)hena);
	i40e_write_rx_ctl(hw, I40E_VFQF_HENA(1), (uint32_t)(hena >> 32));
	I40EVF_WRITE_FLUSH(hw);

	return 0;
}

static void
i40evf_disable_rss(struct i40e_vf *vf)
{
	struct i40e_hw *hw = I40E_VF_TO_HW(vf);

	i40e_write_rx_ctl(hw, I40E_VFQF_HENA(0), 0);
	i40e_write_rx_ctl(hw, I40E_VFQF_HENA(1), 0);
	I40EVF_WRITE_FLUSH(hw);
}

static int
i40evf_config_rss(struct i40e_vf *vf)
{
	struct i40e_hw *hw = I40E_VF_TO_HW(vf);
	struct rte_eth_rss_conf rss_conf;
	uint32_t i, j, lut = 0, nb_q = (I40E_VFQF_HLUT_MAX_INDEX + 1) * 4;
	uint16_t num;

	if (vf->dev_data->dev_conf.rxmode.mq_mode != ETH_MQ_RX_RSS) {
		i40evf_disable_rss(vf);
		PMD_DRV_LOG(DEBUG, "RSS not configured");
		return 0;
	}

	num = RTE_MIN(vf->dev_data->nb_rx_queues, I40E_MAX_QP_NUM_PER_VF);
	/* Fill out the look up table */
	for (i = 0, j = 0; i < nb_q; i++, j++) {
		if (j >= num)
			j = 0;
		lut = (lut << 8) | j;
		if ((i & 3) == 3)
			I40E_WRITE_REG(hw, I40E_VFQF_HLUT(i >> 2), lut);
	}

	rss_conf = vf->dev_data->dev_conf.rx_adv_conf.rss_conf;
	if ((rss_conf.rss_hf & vf->adapter->flow_types_mask) == 0) {
		i40evf_disable_rss(vf);
		PMD_DRV_LOG(DEBUG, "No hash flag is set");
		return 0;
	}

	if (rss_conf.rss_key == NULL || rss_conf.rss_key_len <
		(I40E_VFQF_HKEY_MAX_INDEX + 1) * sizeof(uint32_t)) {
		/* Calculate the default hash key */
		for (i = 0; i <= I40E_VFQF_HKEY_MAX_INDEX; i++)
			rss_key_default[i] = (uint32_t)rte_rand();
		rss_conf.rss_key = (uint8_t *)rss_key_default;
		rss_conf.rss_key_len = (I40E_VFQF_HKEY_MAX_INDEX + 1) *
			sizeof(uint32_t);
	}

	return i40evf_hw_rss_hash_set(vf, &rss_conf);
}

static int
i40evf_dev_rss_hash_update(struct rte_eth_dev *dev,
			   struct rte_eth_rss_conf *rss_conf)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	uint64_t rss_hf = rss_conf->rss_hf & vf->adapter->flow_types_mask;
	uint64_t hena;

	hena = (uint64_t)i40e_read_rx_ctl(hw, I40E_VFQF_HENA(0));
	hena |= ((uint64_t)i40e_read_rx_ctl(hw, I40E_VFQF_HENA(1))) << 32;

	if (!(hena & vf->adapter->pctypes_mask)) { /* RSS disabled */
		if (rss_hf != 0) /* Enable RSS */
			return -EINVAL;
		return 0;
	}

	/* RSS enabled */
	if (rss_hf == 0) /* Disable RSS */
		return -EINVAL;

	return i40evf_hw_rss_hash_set(vf, rss_conf);
}

static int
i40evf_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
			     struct rte_eth_rss_conf *rss_conf)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
	uint64_t hena;

	i40evf_get_rss_key(&vf->vsi, rss_conf->rss_key,
			   &rss_conf->rss_key_len);

	hena = (uint64_t)i40e_read_rx_ctl(hw, I40E_VFQF_HENA(0));
	hena |= ((uint64_t)i40e_read_rx_ctl(hw, I40E_VFQF_HENA(1))) << 32;
	rss_conf->rss_hf = i40e_parse_hena(vf->adapter, hena);

	return 0;
}

static int
i40evf_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct rte_eth_dev_data *dev_data = vf->dev_data;
	uint32_t frame_size = mtu + I40E_ETH_OVERHEAD;
	int ret = 0;

	/* check if mtu is within the allowed range */
	if ((mtu < ETHER_MIN_MTU) || (frame_size > I40E_FRAME_SIZE_MAX))
		return -EINVAL;

	/* mtu setting is forbidden if port is start */
	if (dev_data->dev_started) {
		PMD_DRV_LOG(ERR, "port %d must be stopped before configuration",
			    dev_data->port_id);
		return -EBUSY;
	}

	if (frame_size > ETHER_MAX_LEN)
		dev_data->dev_conf.rxmode.offloads |=
			DEV_RX_OFFLOAD_JUMBO_FRAME;
	else
		dev_data->dev_conf.rxmode.offloads &=
			~DEV_RX_OFFLOAD_JUMBO_FRAME;
	dev_data->dev_conf.rxmode.max_rx_pkt_len = frame_size;

	return ret;
}

static int
i40evf_set_default_mac_addr(struct rte_eth_dev *dev,
			    struct ether_addr *mac_addr)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);

	if (!is_valid_assigned_ether_addr(mac_addr)) {
		PMD_DRV_LOG(ERR, "Tried to set invalid MAC address.");
		return -EINVAL;
	}

	if (vf->flags & I40E_FLAG_VF_MAC_BY_PF)
		return -EPERM;

	i40evf_del_mac_addr_by_addr(dev, (struct ether_addr *)hw->mac.addr);

	if (i40evf_add_mac_addr(dev, mac_addr, 0, 0) != 0)
		return -EIO;

	ether_addr_copy(mac_addr, (struct ether_addr *)hw->mac.addr);
	return 0;
}

static int
i40evf_add_del_mc_addr_list(struct rte_eth_dev *dev,
			struct ether_addr *mc_addrs,
			uint32_t mc_addrs_num, bool add)
{
	struct virtchnl_ether_addr_list *list;
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	uint8_t cmd_buffer[sizeof(struct virtchnl_ether_addr_list) +
		(I40E_NUM_MACADDR_MAX * sizeof(struct virtchnl_ether_addr))];
	uint32_t i;
	int err;
	struct vf_cmd_info args;

	if (mc_addrs == NULL || mc_addrs_num == 0)
		return 0;

	if (mc_addrs_num > I40E_NUM_MACADDR_MAX)
		return -EINVAL;

	list = (struct virtchnl_ether_addr_list *)cmd_buffer;
	list->vsi_id = vf->vsi_res->vsi_id;
	list->num_elements = mc_addrs_num;

	for (i = 0; i < mc_addrs_num; i++) {
		if (!I40E_IS_MULTICAST(mc_addrs[i].addr_bytes)) {
			PMD_DRV_LOG(ERR, "Invalid mac:%x:%x:%x:%x:%x:%x",
				    mc_addrs[i].addr_bytes[0],
				    mc_addrs[i].addr_bytes[1],
				    mc_addrs[i].addr_bytes[2],
				    mc_addrs[i].addr_bytes[3],
				    mc_addrs[i].addr_bytes[4],
				    mc_addrs[i].addr_bytes[5]);
			return -EINVAL;
		}

		memcpy(list->list[i].addr, mc_addrs[i].addr_bytes,
			sizeof(list->list[i].addr));
	}

	args.ops = add ? VIRTCHNL_OP_ADD_ETH_ADDR : VIRTCHNL_OP_DEL_ETH_ADDR;
	args.in_args = cmd_buffer;
	args.in_args_size = sizeof(struct virtchnl_ether_addr_list) +
		i * sizeof(struct virtchnl_ether_addr);
	args.out_buffer = vf->aq_resp;
	args.out_size = I40E_AQ_BUF_SZ;
	err = i40evf_execute_vf_cmd(dev, &args);
	if (err) {
		PMD_DRV_LOG(ERR, "fail to execute command %s",
			add ? "OP_ADD_ETH_ADDR" : "OP_DEL_ETH_ADDR");
		return err;
	}

	return 0;
}

static int
i40evf_set_mc_addr_list(struct rte_eth_dev *dev, struct ether_addr *mc_addrs,
			uint32_t mc_addrs_num)
{
	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
	int err;

	/* flush previous addresses */
	err = i40evf_add_del_mc_addr_list(dev, vf->mc_addrs, vf->mc_addrs_num,
				FALSE);
	if (err)
		return err;

	vf->mc_addrs_num = 0;

	/* add new ones */
	err = i40evf_add_del_mc_addr_list(dev, mc_addrs, mc_addrs_num,
					TRUE);
	if (err)
		return err;

	vf->mc_addrs_num = mc_addrs_num;
	memcpy(vf->mc_addrs, mc_addrs, mc_addrs_num * sizeof(*mc_addrs));

	return 0;
}
