/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2017 Cavium, Inc
 */

#include <rte_string_fns.h>
#include <ethdev_driver.h>
#include <ethdev_pci.h>
#include <rte_cycles.h>
#include <rte_malloc.h>
#include <rte_alarm.h>
#include <rte_ether.h>

#include "lio_logs.h"
#include "lio_23xx_vf.h"
#include "lio_ethdev.h"
#include "lio_rxtx.h"

/* Default RSS key in use */
static uint8_t lio_rss_key[40] = {
        0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2,
        0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0,
        0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
        0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C,
        0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA,
};

static const struct rte_eth_desc_lim lio_rx_desc_lim = {
        .nb_max         = CN23XX_MAX_OQ_DESCRIPTORS,
        .nb_min         = CN23XX_MIN_OQ_DESCRIPTORS,
        .nb_align       = 1,
};

static const struct rte_eth_desc_lim lio_tx_desc_lim = {
        .nb_max         = CN23XX_MAX_IQ_DESCRIPTORS,
        .nb_min         = CN23XX_MIN_IQ_DESCRIPTORS,
        .nb_align       = 1,
};

/* Wait for control command to reach nic. */
static uint16_t
lio_wait_for_ctrl_cmd(struct lio_device *lio_dev,
                      struct lio_dev_ctrl_cmd *ctrl_cmd)
{
        uint16_t timeout = LIO_MAX_CMD_TIMEOUT;

        while ((ctrl_cmd->cond == 0) && --timeout) {
                lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);
                rte_delay_ms(1);
        }

        return !timeout;
}

/**
 * \brief Send Rx control command
 * @param eth_dev Pointer to the structure rte_eth_dev
 * @param start_stop whether to start or stop
 */
static int
lio_send_rx_ctrl_cmd(struct rte_eth_dev *eth_dev, int start_stop)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_RX_CTL;
        ctrl_pkt.ncmd.s.param1 = start_stop;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to send RX Control message\n");
                return -1;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
                lio_dev_err(lio_dev, "RX Control command timed out\n");
                return -1;
        }

        return 0;
}

/* store statistics names and its offset in stats structure */
struct rte_lio_xstats_name_off {
        char name[RTE_ETH_XSTATS_NAME_SIZE];
        unsigned int offset;
};

static const struct rte_lio_xstats_name_off rte_lio_stats_strings[] = {
        {"rx_pkts", offsetof(struct octeon_rx_stats, total_rcvd)},
        {"rx_bytes", offsetof(struct octeon_rx_stats, bytes_rcvd)},
        {"rx_broadcast_pkts", offsetof(struct octeon_rx_stats, total_bcst)},
        {"rx_multicast_pkts", offsetof(struct octeon_rx_stats, total_mcst)},
        {"rx_flow_ctrl_pkts", offsetof(struct octeon_rx_stats, ctl_rcvd)},
        {"rx_fifo_err", offsetof(struct octeon_rx_stats, fifo_err)},
        {"rx_dmac_drop", offsetof(struct octeon_rx_stats, dmac_drop)},
        {"rx_fcs_err", offsetof(struct octeon_rx_stats, fcs_err)},
        {"rx_jabber_err", offsetof(struct octeon_rx_stats, jabber_err)},
        {"rx_l2_err", offsetof(struct octeon_rx_stats, l2_err)},
        {"rx_vxlan_pkts", offsetof(struct octeon_rx_stats, fw_rx_vxlan)},
        {"rx_vxlan_err", offsetof(struct octeon_rx_stats, fw_rx_vxlan_err)},
        {"rx_lro_pkts", offsetof(struct octeon_rx_stats, fw_lro_pkts)},
        {"tx_pkts", (offsetof(struct octeon_tx_stats, total_pkts_sent)) +
                                                sizeof(struct octeon_rx_stats)},
        {"tx_bytes", (offsetof(struct octeon_tx_stats, total_bytes_sent)) +
                                                sizeof(struct octeon_rx_stats)},
        {"tx_broadcast_pkts",
                (offsetof(struct octeon_tx_stats, bcast_pkts_sent)) +
                        sizeof(struct octeon_rx_stats)},
        {"tx_multicast_pkts",
                (offsetof(struct octeon_tx_stats, mcast_pkts_sent)) +
                        sizeof(struct octeon_rx_stats)},
        {"tx_flow_ctrl_pkts", (offsetof(struct octeon_tx_stats, ctl_sent)) +
                                                sizeof(struct octeon_rx_stats)},
        {"tx_fifo_err", (offsetof(struct octeon_tx_stats, fifo_err)) +
                                                sizeof(struct octeon_rx_stats)},
        {"tx_total_collisions", (offsetof(struct octeon_tx_stats,
                                          total_collisions)) +
                                                sizeof(struct octeon_rx_stats)},
        {"tx_tso", (offsetof(struct octeon_tx_stats, fw_tso)) +
                                                sizeof(struct octeon_rx_stats)},
        {"tx_vxlan_pkts", (offsetof(struct octeon_tx_stats, fw_tx_vxlan)) +
                                                sizeof(struct octeon_rx_stats)},
};

#define LIO_NB_XSTATS   RTE_DIM(rte_lio_stats_strings)

/* Get hw stats of the port */
static int
lio_dev_xstats_get(struct rte_eth_dev *eth_dev, struct rte_eth_xstat *xstats,
                   unsigned int n)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        uint16_t timeout = LIO_MAX_CMD_TIMEOUT;
        struct octeon_link_stats *hw_stats;
        struct lio_link_stats_resp *resp;
        struct lio_soft_command *sc;
        uint32_t resp_size;
        unsigned int i;
        int retval;

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down\n",
                            lio_dev->port_id);
                return -EINVAL;
        }

        if (n < LIO_NB_XSTATS)
                return LIO_NB_XSTATS;

        resp_size = sizeof(struct lio_link_stats_resp);
        sc = lio_alloc_soft_command(lio_dev, 0, resp_size, 0);
        if (sc == NULL)
                return -ENOMEM;

        resp = (struct lio_link_stats_resp *)sc->virtrptr;
        lio_prepare_soft_command(lio_dev, sc, LIO_OPCODE,
                                 LIO_OPCODE_PORT_STATS, 0, 0, 0);

        /* Setting wait time in seconds */
        sc->wait_time = LIO_MAX_CMD_TIMEOUT / 1000;

        retval = lio_send_soft_command(lio_dev, sc);
        if (retval == LIO_IQ_SEND_FAILED) {
                lio_dev_err(lio_dev, "failed to get port stats from firmware. status: %x\n",
                            retval);
                goto get_stats_fail;
        }

        while ((*sc->status_word == LIO_COMPLETION_WORD_INIT) && --timeout) {
                lio_flush_iq(lio_dev, lio_dev->instr_queue[sc->iq_no]);
                lio_process_ordered_list(lio_dev);
                rte_delay_ms(1);
        }

        retval = resp->status;
        if (retval) {
                lio_dev_err(lio_dev, "failed to get port stats from firmware\n");
                goto get_stats_fail;
        }

        lio_swap_8B_data((uint64_t *)(&resp->link_stats),
                         sizeof(struct octeon_link_stats) >> 3);

        hw_stats = &resp->link_stats;

        for (i = 0; i < LIO_NB_XSTATS; i++) {
                xstats[i].id = i;
                xstats[i].value =
                    *(uint64_t *)(((char *)hw_stats) +
                                        rte_lio_stats_strings[i].offset);
        }

        lio_free_soft_command(sc);

        return LIO_NB_XSTATS;

get_stats_fail:
        lio_free_soft_command(sc);

        return -1;
}

static int
lio_dev_xstats_get_names(struct rte_eth_dev *eth_dev,
                         struct rte_eth_xstat_name *xstats_names,
                         unsigned limit __rte_unused)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        unsigned int i;

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down\n",
                            lio_dev->port_id);
                return -EINVAL;
        }

        if (xstats_names == NULL)
                return LIO_NB_XSTATS;

        /* Note: limit checked in rte_eth_xstats_names() */

        for (i = 0; i < LIO_NB_XSTATS; i++) {
                snprintf(xstats_names[i].name, sizeof(xstats_names[i].name),
                         "%s", rte_lio_stats_strings[i].name);
        }

        return LIO_NB_XSTATS;
}

/* Reset hw stats for the port */
static int
lio_dev_xstats_reset(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;
        int ret;

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down\n",
                            lio_dev->port_id);
                return -EINVAL;
        }

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_CLEAR_STATS;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        ret = lio_send_ctrl_pkt(lio_dev, &ctrl_pkt);
        if (ret != 0) {
                lio_dev_err(lio_dev, "Failed to send clear stats command\n");
                return ret;
        }

        ret = lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd);
        if (ret != 0) {
                lio_dev_err(lio_dev, "Clear stats command timed out\n");
                return ret;
        }

        /* clear stored per queue stats */
        RTE_FUNC_PTR_OR_ERR_RET(*eth_dev->dev_ops->stats_reset, 0);
        return (*eth_dev->dev_ops->stats_reset)(eth_dev);
}

/* Retrieve the device statistics (# packets in/out, # bytes in/out, etc */
static int
lio_dev_stats_get(struct rte_eth_dev *eth_dev,
                  struct rte_eth_stats *stats)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_droq_stats *oq_stats;
        struct lio_iq_stats *iq_stats;
        struct lio_instr_queue *txq;
        struct lio_droq *droq;
        int i, iq_no, oq_no;
        uint64_t bytes = 0;
        uint64_t pkts = 0;
        uint64_t drop = 0;

        for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
                iq_no = lio_dev->linfo.txpciq[i].s.q_no;
                txq = lio_dev->instr_queue[iq_no];
                if (txq != NULL) {
                        iq_stats = &txq->stats;
                        pkts += iq_stats->tx_done;
                        drop += iq_stats->tx_dropped;
                        bytes += iq_stats->tx_tot_bytes;
                }
        }

        stats->opackets = pkts;
        stats->obytes = bytes;
        stats->oerrors = drop;

        pkts = 0;
        drop = 0;
        bytes = 0;

        for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
                oq_no = lio_dev->linfo.rxpciq[i].s.q_no;
                droq = lio_dev->droq[oq_no];
                if (droq != NULL) {
                        oq_stats = &droq->stats;
                        pkts += oq_stats->rx_pkts_received;
                        drop += (oq_stats->rx_dropped +
                                        oq_stats->dropped_toomany +
                                        oq_stats->dropped_nomem);
                        bytes += oq_stats->rx_bytes_received;
                }
        }
        stats->ibytes = bytes;
        stats->ipackets = pkts;
        stats->ierrors = drop;

        return 0;
}

static int
lio_dev_stats_reset(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_droq_stats *oq_stats;
        struct lio_iq_stats *iq_stats;
        struct lio_instr_queue *txq;
        struct lio_droq *droq;
        int i, iq_no, oq_no;

        for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
                iq_no = lio_dev->linfo.txpciq[i].s.q_no;
                txq = lio_dev->instr_queue[iq_no];
                if (txq != NULL) {
                        iq_stats = &txq->stats;
                        memset(iq_stats, 0, sizeof(struct lio_iq_stats));
                }
        }

        for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
                oq_no = lio_dev->linfo.rxpciq[i].s.q_no;
                droq = lio_dev->droq[oq_no];
                if (droq != NULL) {
                        oq_stats = &droq->stats;
                        memset(oq_stats, 0, sizeof(struct lio_droq_stats));
                }
        }

        return 0;
}

static int
lio_dev_info_get(struct rte_eth_dev *eth_dev,
                 struct rte_eth_dev_info *devinfo)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);

        switch (pci_dev->id.subsystem_device_id) {
        /* CN23xx 10G cards */
        case PCI_SUBSYS_DEV_ID_CN2350_210:
        case PCI_SUBSYS_DEV_ID_CN2360_210:
        case PCI_SUBSYS_DEV_ID_CN2350_210SVPN3:
        case PCI_SUBSYS_DEV_ID_CN2360_210SVPN3:
        case PCI_SUBSYS_DEV_ID_CN2350_210SVPT:
        case PCI_SUBSYS_DEV_ID_CN2360_210SVPT:
                devinfo->speed_capa = RTE_ETH_LINK_SPEED_10G;
                break;
        /* CN23xx 25G cards */
        case PCI_SUBSYS_DEV_ID_CN2350_225:
        case PCI_SUBSYS_DEV_ID_CN2360_225:
                devinfo->speed_capa = RTE_ETH_LINK_SPEED_25G;
                break;
        default:
                devinfo->speed_capa = RTE_ETH_LINK_SPEED_10G;
                lio_dev_err(lio_dev,
                            "Unknown CN23XX subsystem device id. Setting 10G as default link speed.\n");
                return -EINVAL;
        }

        devinfo->max_rx_queues = lio_dev->max_rx_queues;
        devinfo->max_tx_queues = lio_dev->max_tx_queues;

        devinfo->min_rx_bufsize = LIO_MIN_RX_BUF_SIZE;
        devinfo->max_rx_pktlen = LIO_MAX_RX_PKTLEN;

        devinfo->max_mac_addrs = 1;

        devinfo->rx_offload_capa = (RTE_ETH_RX_OFFLOAD_IPV4_CKSUM               |
                                    RTE_ETH_RX_OFFLOAD_UDP_CKSUM                |
                                    RTE_ETH_RX_OFFLOAD_TCP_CKSUM                |
                                    RTE_ETH_RX_OFFLOAD_VLAN_STRIP               |
                                    RTE_ETH_RX_OFFLOAD_RSS_HASH);
        devinfo->tx_offload_capa = (RTE_ETH_TX_OFFLOAD_IPV4_CKSUM               |
                                    RTE_ETH_TX_OFFLOAD_UDP_CKSUM                |
                                    RTE_ETH_TX_OFFLOAD_TCP_CKSUM                |
                                    RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM);

        devinfo->rx_desc_lim = lio_rx_desc_lim;
        devinfo->tx_desc_lim = lio_tx_desc_lim;

        devinfo->reta_size = LIO_RSS_MAX_TABLE_SZ;
        devinfo->hash_key_size = LIO_RSS_MAX_KEY_SZ;
        devinfo->flow_type_rss_offloads = (RTE_ETH_RSS_IPV4                     |
                                           RTE_ETH_RSS_NONFRAG_IPV4_TCP |
                                           RTE_ETH_RSS_IPV6                     |
                                           RTE_ETH_RSS_NONFRAG_IPV6_TCP |
                                           RTE_ETH_RSS_IPV6_EX          |
                                           RTE_ETH_RSS_IPV6_TCP_EX);
        return 0;
}

static int
lio_dev_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        PMD_INIT_FUNC_TRACE();

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down, can't set MTU\n",
                            lio_dev->port_id);
                return -EINVAL;
        }

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_CHANGE_MTU;
        ctrl_pkt.ncmd.s.param1 = mtu;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to send command to change MTU\n");
                return -1;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
                lio_dev_err(lio_dev, "Command to change MTU timed out\n");
                return -1;
        }

        return 0;
}

static int
lio_dev_rss_reta_update(struct rte_eth_dev *eth_dev,
                        struct rte_eth_rss_reta_entry64 *reta_conf,
                        uint16_t reta_size)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_rss_ctx *rss_state = &lio_dev->rss_state;
        struct lio_rss_set *rss_param;
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;
        int i, j, index;

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down, can't update reta\n",
                            lio_dev->port_id);
                return -EINVAL;
        }

        if (reta_size != LIO_RSS_MAX_TABLE_SZ) {
                lio_dev_err(lio_dev,
                            "The size of hash lookup table configured (%d) doesn't match the number hardware can supported (%d)\n",
                            reta_size, LIO_RSS_MAX_TABLE_SZ);
                return -EINVAL;
        }

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        rss_param = (struct lio_rss_set *)&ctrl_pkt.udd[0];

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_SET_RSS;
        ctrl_pkt.ncmd.s.more = sizeof(struct lio_rss_set) >> 3;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        rss_param->param.flags = 0xF;
        rss_param->param.flags &= ~LIO_RSS_PARAM_ITABLE_UNCHANGED;
        rss_param->param.itablesize = LIO_RSS_MAX_TABLE_SZ;

        for (i = 0; i < (reta_size / RTE_ETH_RETA_GROUP_SIZE); i++) {
                for (j = 0; j < RTE_ETH_RETA_GROUP_SIZE; j++) {
                        if ((reta_conf[i].mask) & ((uint64_t)1 << j)) {
                                index = (i * RTE_ETH_RETA_GROUP_SIZE) + j;
                                rss_state->itable[index] = reta_conf[i].reta[j];
                        }
                }
        }

        rss_state->itable_size = LIO_RSS_MAX_TABLE_SZ;
        memcpy(rss_param->itable, rss_state->itable, rss_state->itable_size);

        lio_swap_8B_data((uint64_t *)rss_param, LIO_RSS_PARAM_SIZE >> 3);

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to set rss hash\n");
                return -1;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
                lio_dev_err(lio_dev, "Set rss hash timed out\n");
                return -1;
        }

        return 0;
}

static int
lio_dev_rss_reta_query(struct rte_eth_dev *eth_dev,
                       struct rte_eth_rss_reta_entry64 *reta_conf,
                       uint16_t reta_size)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_rss_ctx *rss_state = &lio_dev->rss_state;
        int i, num;

        if (reta_size != LIO_RSS_MAX_TABLE_SZ) {
                lio_dev_err(lio_dev,
                            "The size of hash lookup table configured (%d) doesn't match the number hardware can supported (%d)\n",
                            reta_size, LIO_RSS_MAX_TABLE_SZ);
                return -EINVAL;
        }

        num = reta_size / RTE_ETH_RETA_GROUP_SIZE;

        for (i = 0; i < num; i++) {
                memcpy(reta_conf->reta,
                       &rss_state->itable[i * RTE_ETH_RETA_GROUP_SIZE],
                       RTE_ETH_RETA_GROUP_SIZE);
                reta_conf++;
        }

        return 0;
}

static int
lio_dev_rss_hash_conf_get(struct rte_eth_dev *eth_dev,
                          struct rte_eth_rss_conf *rss_conf)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_rss_ctx *rss_state = &lio_dev->rss_state;
        uint8_t *hash_key = NULL;
        uint64_t rss_hf = 0;

        if (rss_state->hash_disable) {
                lio_dev_info(lio_dev, "RSS disabled in nic\n");
                rss_conf->rss_hf = 0;
                return 0;
        }

        /* Get key value */
        hash_key = rss_conf->rss_key;
        if (hash_key != NULL)
                memcpy(hash_key, rss_state->hash_key, rss_state->hash_key_size);

        if (rss_state->ip)
                rss_hf |= RTE_ETH_RSS_IPV4;
        if (rss_state->tcp_hash)
                rss_hf |= RTE_ETH_RSS_NONFRAG_IPV4_TCP;
        if (rss_state->ipv6)
                rss_hf |= RTE_ETH_RSS_IPV6;
        if (rss_state->ipv6_tcp_hash)
                rss_hf |= RTE_ETH_RSS_NONFRAG_IPV6_TCP;
        if (rss_state->ipv6_ex)
                rss_hf |= RTE_ETH_RSS_IPV6_EX;
        if (rss_state->ipv6_tcp_ex_hash)
                rss_hf |= RTE_ETH_RSS_IPV6_TCP_EX;

        rss_conf->rss_hf = rss_hf;

        return 0;
}

static int
lio_dev_rss_hash_update(struct rte_eth_dev *eth_dev,
                        struct rte_eth_rss_conf *rss_conf)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_rss_ctx *rss_state = &lio_dev->rss_state;
        struct lio_rss_set *rss_param;
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down, can't update hash\n",
                            lio_dev->port_id);
                return -EINVAL;
        }

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        rss_param = (struct lio_rss_set *)&ctrl_pkt.udd[0];

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_SET_RSS;
        ctrl_pkt.ncmd.s.more = sizeof(struct lio_rss_set) >> 3;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        rss_param->param.flags = 0xF;

        if (rss_conf->rss_key) {
                rss_param->param.flags &= ~LIO_RSS_PARAM_HASH_KEY_UNCHANGED;
                rss_state->hash_key_size = LIO_RSS_MAX_KEY_SZ;
                rss_param->param.hashkeysize = LIO_RSS_MAX_KEY_SZ;
                memcpy(rss_state->hash_key, rss_conf->rss_key,
                       rss_state->hash_key_size);
                memcpy(rss_param->key, rss_state->hash_key,
                       rss_state->hash_key_size);
        }

        if ((rss_conf->rss_hf & LIO_RSS_OFFLOAD_ALL) == 0) {
                /* Can't disable rss through hash flags,
                 * if it is enabled by default during init
                 */
                if (!rss_state->hash_disable)
                        return -EINVAL;

                /* This is for --disable-rss during testpmd launch */
                rss_param->param.flags |= LIO_RSS_PARAM_DISABLE_RSS;
        } else {
                uint32_t hashinfo = 0;

                /* Can't enable rss if disabled by default during init */
                if (rss_state->hash_disable)
                        return -EINVAL;

                if (rss_conf->rss_hf & RTE_ETH_RSS_IPV4) {
                        hashinfo |= LIO_RSS_HASH_IPV4;
                        rss_state->ip = 1;
                } else {
                        rss_state->ip = 0;
                }

                if (rss_conf->rss_hf & RTE_ETH_RSS_NONFRAG_IPV4_TCP) {
                        hashinfo |= LIO_RSS_HASH_TCP_IPV4;
                        rss_state->tcp_hash = 1;
                } else {
                        rss_state->tcp_hash = 0;
                }

                if (rss_conf->rss_hf & RTE_ETH_RSS_IPV6) {
                        hashinfo |= LIO_RSS_HASH_IPV6;
                        rss_state->ipv6 = 1;
                } else {
                        rss_state->ipv6 = 0;
                }

                if (rss_conf->rss_hf & RTE_ETH_RSS_NONFRAG_IPV6_TCP) {
                        hashinfo |= LIO_RSS_HASH_TCP_IPV6;
                        rss_state->ipv6_tcp_hash = 1;
                } else {
                        rss_state->ipv6_tcp_hash = 0;
                }

                if (rss_conf->rss_hf & RTE_ETH_RSS_IPV6_EX) {
                        hashinfo |= LIO_RSS_HASH_IPV6_EX;
                        rss_state->ipv6_ex = 1;
                } else {
                        rss_state->ipv6_ex = 0;
                }

                if (rss_conf->rss_hf & RTE_ETH_RSS_IPV6_TCP_EX) {
                        hashinfo |= LIO_RSS_HASH_TCP_IPV6_EX;
                        rss_state->ipv6_tcp_ex_hash = 1;
                } else {
                        rss_state->ipv6_tcp_ex_hash = 0;
                }

                rss_param->param.flags &= ~LIO_RSS_PARAM_HASH_INFO_UNCHANGED;
                rss_param->param.hashinfo = hashinfo;
        }

        lio_swap_8B_data((uint64_t *)rss_param, LIO_RSS_PARAM_SIZE >> 3);

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to set rss hash\n");
                return -1;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
                lio_dev_err(lio_dev, "Set rss hash timed out\n");
                return -1;
        }

        return 0;
}

/**
 * Add vxlan dest udp port for an interface.
 *
 * @param eth_dev
 *  Pointer to the structure rte_eth_dev
 * @param udp_tnl
 *  udp tunnel conf
 *
 * @return
 *  On success return 0
 *  On failure return -1
 */
static int
lio_dev_udp_tunnel_add(struct rte_eth_dev *eth_dev,
                       struct rte_eth_udp_tunnel *udp_tnl)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        if (udp_tnl == NULL)
                return -EINVAL;

        if (udp_tnl->prot_type != RTE_ETH_TUNNEL_TYPE_VXLAN) {
                lio_dev_err(lio_dev, "Unsupported tunnel type\n");
                return -1;
        }

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_VXLAN_PORT_CONFIG;
        ctrl_pkt.ncmd.s.param1 = udp_tnl->udp_port;
        ctrl_pkt.ncmd.s.more = LIO_CMD_VXLAN_PORT_ADD;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to send VXLAN_PORT_ADD command\n");
                return -1;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
                lio_dev_err(lio_dev, "VXLAN_PORT_ADD command timed out\n");
                return -1;
        }

        return 0;
}

/**
 * Remove vxlan dest udp port for an interface.
 *
 * @param eth_dev
 *  Pointer to the structure rte_eth_dev
 * @param udp_tnl
 *  udp tunnel conf
 *
 * @return
 *  On success return 0
 *  On failure return -1
 */
static int
lio_dev_udp_tunnel_del(struct rte_eth_dev *eth_dev,
                       struct rte_eth_udp_tunnel *udp_tnl)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        if (udp_tnl == NULL)
                return -EINVAL;

        if (udp_tnl->prot_type != RTE_ETH_TUNNEL_TYPE_VXLAN) {
                lio_dev_err(lio_dev, "Unsupported tunnel type\n");
                return -1;
        }

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_VXLAN_PORT_CONFIG;
        ctrl_pkt.ncmd.s.param1 = udp_tnl->udp_port;
        ctrl_pkt.ncmd.s.more = LIO_CMD_VXLAN_PORT_DEL;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to send VXLAN_PORT_DEL command\n");
                return -1;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
                lio_dev_err(lio_dev, "VXLAN_PORT_DEL command timed out\n");
                return -1;
        }

        return 0;
}

static int
lio_dev_vlan_filter_set(struct rte_eth_dev *eth_dev, uint16_t vlan_id, int on)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        if (lio_dev->linfo.vlan_is_admin_assigned)
                return -EPERM;

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = on ?
                        LIO_CMD_ADD_VLAN_FILTER : LIO_CMD_DEL_VLAN_FILTER;
        ctrl_pkt.ncmd.s.param1 = vlan_id;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to %s VLAN port\n",
                            on ? "add" : "remove");
                return -1;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
                lio_dev_err(lio_dev, "Command to %s VLAN port timed out\n",
                            on ? "add" : "remove");
                return -1;
        }

        return 0;
}

static uint64_t
lio_hweight64(uint64_t w)
{
        uint64_t res = w - ((w >> 1) & 0x5555555555555555ul);

        res =
            (res & 0x3333333333333333ul) + ((res >> 2) & 0x3333333333333333ul);
        res = (res + (res >> 4)) & 0x0F0F0F0F0F0F0F0Ful;
        res = res + (res >> 8);
        res = res + (res >> 16);

        return (res + (res >> 32)) & 0x00000000000000FFul;
}

static int
lio_dev_link_update(struct rte_eth_dev *eth_dev,
                    int wait_to_complete __rte_unused)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct rte_eth_link link;

        /* Initialize */
        memset(&link, 0, sizeof(link));
        link.link_status = RTE_ETH_LINK_DOWN;
        link.link_speed = RTE_ETH_SPEED_NUM_NONE;
        link.link_duplex = RTE_ETH_LINK_HALF_DUPLEX;
        link.link_autoneg = RTE_ETH_LINK_AUTONEG;

        /* Return what we found */
        if (lio_dev->linfo.link.s.link_up == 0) {
                /* Interface is down */
                return rte_eth_linkstatus_set(eth_dev, &link);
        }

        link.link_status = RTE_ETH_LINK_UP; /* Interface is up */
        link.link_duplex = RTE_ETH_LINK_FULL_DUPLEX;
        switch (lio_dev->linfo.link.s.speed) {
        case LIO_LINK_SPEED_10000:
                link.link_speed = RTE_ETH_SPEED_NUM_10G;
                break;
        case LIO_LINK_SPEED_25000:
                link.link_speed = RTE_ETH_SPEED_NUM_25G;
                break;
        default:
                link.link_speed = RTE_ETH_SPEED_NUM_NONE;
                link.link_duplex = RTE_ETH_LINK_HALF_DUPLEX;
        }

        return rte_eth_linkstatus_set(eth_dev, &link);
}

/**
 * \brief Net device enable, disable allmulticast
 * @param eth_dev Pointer to the structure rte_eth_dev
 *
 * @return
 *  On success return 0
 *  On failure return negative errno
 */
static int
lio_change_dev_flag(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        /* Create a ctrl pkt command to be sent to core app. */
        ctrl_pkt.ncmd.s.cmd = LIO_CMD_CHANGE_DEVFLAGS;
        ctrl_pkt.ncmd.s.param1 = lio_dev->ifflags;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to send change flag message\n");
                return -EAGAIN;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
                lio_dev_err(lio_dev, "Change dev flag command timed out\n");
                return -ETIMEDOUT;
        }

        return 0;
}

static int
lio_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);

        if (strcmp(lio_dev->firmware_version, LIO_VF_TRUST_MIN_VERSION) < 0) {
                lio_dev_err(lio_dev, "Require firmware version >= %s\n",
                            LIO_VF_TRUST_MIN_VERSION);
                return -EAGAIN;
        }

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down, can't enable promiscuous\n",
                            lio_dev->port_id);

                return -EAGAIN;
        }

        lio_dev->ifflags |= LIO_IFFLAG_PROMISC;
        return lio_change_dev_flag(eth_dev);
}

static int
lio_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);

        if (strcmp(lio_dev->firmware_version, LIO_VF_TRUST_MIN_VERSION) < 0) {
                lio_dev_err(lio_dev, "Require firmware version >= %s\n",
                            LIO_VF_TRUST_MIN_VERSION);
                return -EAGAIN;
        }

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down, can't disable promiscuous\n",
                            lio_dev->port_id);
                return -EAGAIN;
        }

        lio_dev->ifflags &= ~LIO_IFFLAG_PROMISC;
        return lio_change_dev_flag(eth_dev);
}

static int
lio_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down, can't enable multicast\n",
                            lio_dev->port_id);
                return -EAGAIN;
        }

        lio_dev->ifflags |= LIO_IFFLAG_ALLMULTI;
        return lio_change_dev_flag(eth_dev);
}

static int
lio_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);

        if (!lio_dev->intf_open) {
                lio_dev_err(lio_dev, "Port %d down, can't disable multicast\n",
                            lio_dev->port_id);
                return -EAGAIN;
        }

        lio_dev->ifflags &= ~LIO_IFFLAG_ALLMULTI;
        return lio_change_dev_flag(eth_dev);
}

static void
lio_dev_rss_configure(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_rss_ctx *rss_state = &lio_dev->rss_state;
        struct rte_eth_rss_reta_entry64 reta_conf[8];
        struct rte_eth_rss_conf rss_conf;
        uint16_t i;

        /* Configure the RSS key and the RSS protocols used to compute
         * the RSS hash of input packets.
         */
        rss_conf = eth_dev->data->dev_conf.rx_adv_conf.rss_conf;
        if ((rss_conf.rss_hf & LIO_RSS_OFFLOAD_ALL) == 0) {
                rss_state->hash_disable = 1;
                lio_dev_rss_hash_update(eth_dev, &rss_conf);
                return;
        }

        if (rss_conf.rss_key == NULL)
                rss_conf.rss_key = lio_rss_key; /* Default hash key */

        lio_dev_rss_hash_update(eth_dev, &rss_conf);

        memset(reta_conf, 0, sizeof(reta_conf));
        for (i = 0; i < LIO_RSS_MAX_TABLE_SZ; i++) {
                uint8_t q_idx, conf_idx, reta_idx;

                q_idx = (uint8_t)((eth_dev->data->nb_rx_queues > 1) ?
                                  i % eth_dev->data->nb_rx_queues : 0);
                conf_idx = i / RTE_ETH_RETA_GROUP_SIZE;
                reta_idx = i % RTE_ETH_RETA_GROUP_SIZE;
                reta_conf[conf_idx].reta[reta_idx] = q_idx;
                reta_conf[conf_idx].mask |= ((uint64_t)1 << reta_idx);
        }

        lio_dev_rss_reta_update(eth_dev, reta_conf, LIO_RSS_MAX_TABLE_SZ);
}

static void
lio_dev_mq_rx_configure(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_rss_ctx *rss_state = &lio_dev->rss_state;
        struct rte_eth_rss_conf rss_conf;

        switch (eth_dev->data->dev_conf.rxmode.mq_mode) {
        case RTE_ETH_MQ_RX_RSS:
                lio_dev_rss_configure(eth_dev);
                break;
        case RTE_ETH_MQ_RX_NONE:
        /* if mq_mode is none, disable rss mode. */
        default:
                memset(&rss_conf, 0, sizeof(rss_conf));
                rss_state->hash_disable = 1;
                lio_dev_rss_hash_update(eth_dev, &rss_conf);
        }
}

/**
 * Setup our receive queue/ringbuffer. This is the
 * queue the Octeon uses to send us packets and
 * responses. We are given a memory pool for our
 * packet buffers that are used to populate the receive
 * queue.
 *
 * @param eth_dev
 *    Pointer to the structure rte_eth_dev
 * @param q_no
 *    Queue number
 * @param num_rx_descs
 *    Number of entries in the queue
 * @param socket_id
 *    Where to allocate memory
 * @param rx_conf
 *    Pointer to the struction rte_eth_rxconf
 * @param mp
 *    Pointer to the packet pool
 *
 * @return
 *    - On success, return 0
 *    - On failure, return -1
 */
static int
lio_dev_rx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t q_no,
                       uint16_t num_rx_descs, unsigned int socket_id,
                       const struct rte_eth_rxconf *rx_conf __rte_unused,
                       struct rte_mempool *mp)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct rte_pktmbuf_pool_private *mbp_priv;
        uint32_t fw_mapped_oq;
        uint16_t buf_size;

        if (q_no >= lio_dev->nb_rx_queues) {
                lio_dev_err(lio_dev, "Invalid rx queue number %u\n", q_no);
                return -EINVAL;
        }

        lio_dev_dbg(lio_dev, "setting up rx queue %u\n", q_no);

        fw_mapped_oq = lio_dev->linfo.rxpciq[q_no].s.q_no;

        /* Free previous allocation if any */
        if (eth_dev->data->rx_queues[q_no] != NULL) {
                lio_dev_rx_queue_release(eth_dev, q_no);
                eth_dev->data->rx_queues[q_no] = NULL;
        }

        mbp_priv = rte_mempool_get_priv(mp);
        buf_size = mbp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM;

        if (lio_setup_droq(lio_dev, fw_mapped_oq, num_rx_descs, buf_size, mp,
                           socket_id)) {
                lio_dev_err(lio_dev, "droq allocation failed\n");
                return -1;
        }

        eth_dev->data->rx_queues[q_no] = lio_dev->droq[fw_mapped_oq];

        return 0;
}

/**
 * Release the receive queue/ringbuffer. Called by
 * the upper layers.
 *
 * @param eth_dev
 *    Pointer to Ethernet device structure.
 * @param q_no
 *    Receive queue index.
 *
 * @return
 *    - nothing
 */
void
lio_dev_rx_queue_release(struct rte_eth_dev *dev, uint16_t q_no)
{
        struct lio_droq *droq = dev->data->rx_queues[q_no];
        int oq_no;

        if (droq) {
                oq_no = droq->q_no;
                lio_delete_droq_queue(droq->lio_dev, oq_no);
        }
}

/**
 * Allocate and initialize SW ring. Initialize associated HW registers.
 *
 * @param eth_dev
 *   Pointer to structure rte_eth_dev
 *
 * @param q_no
 *   Queue number
 *
 * @param num_tx_descs
 *   Number of ringbuffer descriptors
 *
 * @param socket_id
 *   NUMA socket id, used for memory allocations
 *
 * @param tx_conf
 *   Pointer to the structure rte_eth_txconf
 *
 * @return
 *   - On success, return 0
 *   - On failure, return -errno value
 */
static int
lio_dev_tx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t q_no,
                       uint16_t num_tx_descs, unsigned int socket_id,
                       const struct rte_eth_txconf *tx_conf __rte_unused)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        int fw_mapped_iq = lio_dev->linfo.txpciq[q_no].s.q_no;
        int retval;

        if (q_no >= lio_dev->nb_tx_queues) {
                lio_dev_err(lio_dev, "Invalid tx queue number %u\n", q_no);
                return -EINVAL;
        }

        lio_dev_dbg(lio_dev, "setting up tx queue %u\n", q_no);

        /* Free previous allocation if any */
        if (eth_dev->data->tx_queues[q_no] != NULL) {
                lio_dev_tx_queue_release(eth_dev, q_no);
                eth_dev->data->tx_queues[q_no] = NULL;
        }

        retval = lio_setup_iq(lio_dev, q_no, lio_dev->linfo.txpciq[q_no],
                              num_tx_descs, lio_dev, socket_id);

        if (retval) {
                lio_dev_err(lio_dev, "Runtime IQ(TxQ) creation failed.\n");
                return retval;
        }

        retval = lio_setup_sglists(lio_dev, q_no, fw_mapped_iq,
                                lio_dev->instr_queue[fw_mapped_iq]->nb_desc,
                                socket_id);

        if (retval) {
                lio_delete_instruction_queue(lio_dev, fw_mapped_iq);
                return retval;
        }

        eth_dev->data->tx_queues[q_no] = lio_dev->instr_queue[fw_mapped_iq];

        return 0;
}

/**
 * Release the transmit queue/ringbuffer. Called by
 * the upper layers.
 *
 * @param eth_dev
 *    Pointer to Ethernet device structure.
 * @param q_no
 *   Transmit queue index.
 *
 * @return
 *    - nothing
 */
void
lio_dev_tx_queue_release(struct rte_eth_dev *dev, uint16_t q_no)
{
        struct lio_instr_queue *tq = dev->data->tx_queues[q_no];
        uint32_t fw_mapped_iq_no;


        if (tq) {
                /* Free sg_list */
                lio_delete_sglist(tq);

                fw_mapped_iq_no = tq->txpciq.s.q_no;
                lio_delete_instruction_queue(tq->lio_dev, fw_mapped_iq_no);
        }
}

/**
 * Api to check link state.
 */
static void
lio_dev_get_link_status(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        uint16_t timeout = LIO_MAX_CMD_TIMEOUT;
        struct lio_link_status_resp *resp;
        union octeon_link_status *ls;
        struct lio_soft_command *sc;
        uint32_t resp_size;

        if (!lio_dev->intf_open)
                return;

        resp_size = sizeof(struct lio_link_status_resp);
        sc = lio_alloc_soft_command(lio_dev, 0, resp_size, 0);
        if (sc == NULL)
                return;

        resp = (struct lio_link_status_resp *)sc->virtrptr;
        lio_prepare_soft_command(lio_dev, sc, LIO_OPCODE,
                                 LIO_OPCODE_INFO, 0, 0, 0);

        /* Setting wait time in seconds */
        sc->wait_time = LIO_MAX_CMD_TIMEOUT / 1000;

        if (lio_send_soft_command(lio_dev, sc) == LIO_IQ_SEND_FAILED)
                goto get_status_fail;

        while ((*sc->status_word == LIO_COMPLETION_WORD_INIT) && --timeout) {
                lio_flush_iq(lio_dev, lio_dev->instr_queue[sc->iq_no]);
                rte_delay_ms(1);
        }

        if (resp->status)
                goto get_status_fail;

        ls = &resp->link_info.link;

        lio_swap_8B_data((uint64_t *)ls, sizeof(union octeon_link_status) >> 3);

        if (lio_dev->linfo.link.link_status64 != ls->link_status64) {
                if (ls->s.mtu < eth_dev->data->mtu) {
                        lio_dev_info(lio_dev, "Lowered VF MTU to %d as PF MTU dropped\n",
                                     ls->s.mtu);
                        eth_dev->data->mtu = ls->s.mtu;
                }
                lio_dev->linfo.link.link_status64 = ls->link_status64;
                lio_dev_link_update(eth_dev, 0);
        }

        lio_free_soft_command(sc);

        return;

get_status_fail:
        lio_free_soft_command(sc);
}

/* This function will be invoked every LSC_TIMEOUT ns (100ms)
 * and will update link state if it changes.
 */
static void
lio_sync_link_state_check(void *eth_dev)
{
        struct lio_device *lio_dev =
                (((struct rte_eth_dev *)eth_dev)->data->dev_private);

        if (lio_dev->port_configured)
                lio_dev_get_link_status(eth_dev);

        /* Schedule periodic link status check.
         * Stop check if interface is close and start again while opening.
         */
        if (lio_dev->intf_open)
                rte_eal_alarm_set(LIO_LSC_TIMEOUT, lio_sync_link_state_check,
                                  eth_dev);
}

static int
lio_dev_start(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        uint16_t timeout = LIO_MAX_CMD_TIMEOUT;
        int ret = 0;

        lio_dev_info(lio_dev, "Starting port %d\n", eth_dev->data->port_id);

        if (lio_dev->fn_list.enable_io_queues(lio_dev))
                return -1;

        if (lio_send_rx_ctrl_cmd(eth_dev, 1))
                return -1;

        /* Ready for link status updates */
        lio_dev->intf_open = 1;
        rte_mb();

        /* Configure RSS if device configured with multiple RX queues. */
        lio_dev_mq_rx_configure(eth_dev);

        /* Before update the link info,
         * must set linfo.link.link_status64 to 0.
         */
        lio_dev->linfo.link.link_status64 = 0;

        /* start polling for lsc */
        ret = rte_eal_alarm_set(LIO_LSC_TIMEOUT,
                                lio_sync_link_state_check,
                                eth_dev);
        if (ret) {
                lio_dev_err(lio_dev,
                            "link state check handler creation failed\n");
                goto dev_lsc_handle_error;
        }

        while ((lio_dev->linfo.link.link_status64 == 0) && (--timeout))
                rte_delay_ms(1);

        if (lio_dev->linfo.link.link_status64 == 0) {
                ret = -1;
                goto dev_mtu_set_error;
        }

        ret = lio_dev_mtu_set(eth_dev, eth_dev->data->mtu);
        if (ret != 0)
                goto dev_mtu_set_error;

        return 0;

dev_mtu_set_error:
        rte_eal_alarm_cancel(lio_sync_link_state_check, eth_dev);

dev_lsc_handle_error:
        lio_dev->intf_open = 0;
        lio_send_rx_ctrl_cmd(eth_dev, 0);

        return ret;
}

/* Stop device and disable input/output functions */
static int
lio_dev_stop(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);

        lio_dev_info(lio_dev, "Stopping port %d\n", eth_dev->data->port_id);
        eth_dev->data->dev_started = 0;
        lio_dev->intf_open = 0;
        rte_mb();

        /* Cancel callback if still running. */
        rte_eal_alarm_cancel(lio_sync_link_state_check, eth_dev);

        lio_send_rx_ctrl_cmd(eth_dev, 0);

        lio_wait_for_instr_fetch(lio_dev);

        /* Clear recorded link status */
        lio_dev->linfo.link.link_status64 = 0;

        return 0;
}

static int
lio_dev_set_link_up(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);

        if (!lio_dev->intf_open) {
                lio_dev_info(lio_dev, "Port is stopped, Start the port first\n");
                return 0;
        }

        if (lio_dev->linfo.link.s.link_up) {
                lio_dev_info(lio_dev, "Link is already UP\n");
                return 0;
        }

        if (lio_send_rx_ctrl_cmd(eth_dev, 1)) {
                lio_dev_err(lio_dev, "Unable to set Link UP\n");
                return -1;
        }

        lio_dev->linfo.link.s.link_up = 1;
        eth_dev->data->dev_link.link_status = RTE_ETH_LINK_UP;

        return 0;
}

static int
lio_dev_set_link_down(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);

        if (!lio_dev->intf_open) {
                lio_dev_info(lio_dev, "Port is stopped, Start the port first\n");
                return 0;
        }

        if (!lio_dev->linfo.link.s.link_up) {
                lio_dev_info(lio_dev, "Link is already DOWN\n");
                return 0;
        }

        lio_dev->linfo.link.s.link_up = 0;
        eth_dev->data->dev_link.link_status = RTE_ETH_LINK_DOWN;

        if (lio_send_rx_ctrl_cmd(eth_dev, 0)) {
                lio_dev->linfo.link.s.link_up = 1;
                eth_dev->data->dev_link.link_status = RTE_ETH_LINK_UP;
                lio_dev_err(lio_dev, "Unable to set Link Down\n");
                return -1;
        }

        return 0;
}

/**
 * Reset and stop the device. This occurs on the first
 * call to this routine. Subsequent calls will simply
 * return. NB: This will require the NIC to be rebooted.
 *
 * @param eth_dev
 *    Pointer to the structure rte_eth_dev
 *
 * @return
 *    - nothing
 */
static int
lio_dev_close(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        int ret = 0;

        if (rte_eal_process_type() != RTE_PROC_PRIMARY)
                return 0;

        lio_dev_info(lio_dev, "closing port %d\n", eth_dev->data->port_id);

        if (lio_dev->intf_open)
                ret = lio_dev_stop(eth_dev);

        /* Reset ioq regs */
        lio_dev->fn_list.setup_device_regs(lio_dev);

        if (lio_dev->pci_dev->kdrv == RTE_PCI_KDRV_IGB_UIO) {
                cn23xx_vf_ask_pf_to_do_flr(lio_dev);
                rte_delay_ms(LIO_PCI_FLR_WAIT);
        }

        /* lio_free_mbox */
        lio_dev->fn_list.free_mbox(lio_dev);

        /* Free glist resources */
        rte_free(lio_dev->glist_head);
        rte_free(lio_dev->glist_lock);
        lio_dev->glist_head = NULL;
        lio_dev->glist_lock = NULL;

        lio_dev->port_configured = 0;

         /* Delete all queues */
        lio_dev_clear_queues(eth_dev);

        return ret;
}

/**
 * Enable tunnel rx checksum verification from firmware.
 */
static void
lio_enable_hw_tunnel_rx_checksum(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_TNL_RX_CSUM_CTL;
        ctrl_pkt.ncmd.s.param1 = LIO_CMD_RXCSUM_ENABLE;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to send TNL_RX_CSUM command\n");
                return;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd))
                lio_dev_err(lio_dev, "TNL_RX_CSUM command timed out\n");
}

/**
 * Enable checksum calculation for inner packet in a tunnel.
 */
static void
lio_enable_hw_tunnel_tx_checksum(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_TNL_TX_CSUM_CTL;
        ctrl_pkt.ncmd.s.param1 = LIO_CMD_TXCSUM_ENABLE;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to send TNL_TX_CSUM command\n");
                return;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd))
                lio_dev_err(lio_dev, "TNL_TX_CSUM command timed out\n");
}

static int
lio_send_queue_count_update(struct rte_eth_dev *eth_dev, int num_txq,
                            int num_rxq)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        struct lio_dev_ctrl_cmd ctrl_cmd;
        struct lio_ctrl_pkt ctrl_pkt;

        if (strcmp(lio_dev->firmware_version, LIO_Q_RECONF_MIN_VERSION) < 0) {
                lio_dev_err(lio_dev, "Require firmware version >= %s\n",
                            LIO_Q_RECONF_MIN_VERSION);
                return -ENOTSUP;
        }

        /* flush added to prevent cmd failure
         * incase the queue is full
         */
        lio_flush_iq(lio_dev, lio_dev->instr_queue[0]);

        memset(&ctrl_pkt, 0, sizeof(struct lio_ctrl_pkt));
        memset(&ctrl_cmd, 0, sizeof(struct lio_dev_ctrl_cmd));

        ctrl_cmd.eth_dev = eth_dev;
        ctrl_cmd.cond = 0;

        ctrl_pkt.ncmd.s.cmd = LIO_CMD_QUEUE_COUNT_CTL;
        ctrl_pkt.ncmd.s.param1 = num_txq;
        ctrl_pkt.ncmd.s.param2 = num_rxq;
        ctrl_pkt.ctrl_cmd = &ctrl_cmd;

        if (lio_send_ctrl_pkt(lio_dev, &ctrl_pkt)) {
                lio_dev_err(lio_dev, "Failed to send queue count control command\n");
                return -1;
        }

        if (lio_wait_for_ctrl_cmd(lio_dev, &ctrl_cmd)) {
                lio_dev_err(lio_dev, "Queue count control command timed out\n");
                return -1;
        }

        return 0;
}

static int
lio_reconf_queues(struct rte_eth_dev *eth_dev, int num_txq, int num_rxq)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        int ret;

        if (lio_dev->nb_rx_queues != num_rxq ||
            lio_dev->nb_tx_queues != num_txq) {
                if (lio_send_queue_count_update(eth_dev, num_txq, num_rxq))
                        return -1;
                lio_dev->nb_rx_queues = num_rxq;
                lio_dev->nb_tx_queues = num_txq;
        }

        if (lio_dev->intf_open) {
                ret = lio_dev_stop(eth_dev);
                if (ret != 0)
                        return ret;
        }

        /* Reset ioq registers */
        if (lio_dev->fn_list.setup_device_regs(lio_dev)) {
                lio_dev_err(lio_dev, "Failed to configure device registers\n");
                return -1;
        }

        return 0;
}

static int
lio_dev_configure(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);
        uint16_t timeout = LIO_MAX_CMD_TIMEOUT;
        int retval, num_iqueues, num_oqueues;
        uint8_t mac[RTE_ETHER_ADDR_LEN], i;
        struct lio_if_cfg_resp *resp;
        struct lio_soft_command *sc;
        union lio_if_cfg if_cfg;
        uint32_t resp_size;

        PMD_INIT_FUNC_TRACE();

        if (eth_dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG)
                eth_dev->data->dev_conf.rxmode.offloads |=
                        RTE_ETH_RX_OFFLOAD_RSS_HASH;

        /* Inform firmware about change in number of queues to use.
         * Disable IO queues and reset registers for re-configuration.
         */
        if (lio_dev->port_configured)
                return lio_reconf_queues(eth_dev,
                                         eth_dev->data->nb_tx_queues,
                                         eth_dev->data->nb_rx_queues);

        lio_dev->nb_rx_queues = eth_dev->data->nb_rx_queues;
        lio_dev->nb_tx_queues = eth_dev->data->nb_tx_queues;

        /* Set max number of queues which can be re-configured. */
        lio_dev->max_rx_queues = eth_dev->data->nb_rx_queues;
        lio_dev->max_tx_queues = eth_dev->data->nb_tx_queues;

        resp_size = sizeof(struct lio_if_cfg_resp);
        sc = lio_alloc_soft_command(lio_dev, 0, resp_size, 0);
        if (sc == NULL)
                return -ENOMEM;

        resp = (struct lio_if_cfg_resp *)sc->virtrptr;

        /* Firmware doesn't have capability to reconfigure the queues,
         * Claim all queues, and use as many required
         */
        if_cfg.if_cfg64 = 0;
        if_cfg.s.num_iqueues = lio_dev->nb_tx_queues;
        if_cfg.s.num_oqueues = lio_dev->nb_rx_queues;
        if_cfg.s.base_queue = 0;

        if_cfg.s.gmx_port_id = lio_dev->pf_num;

        lio_prepare_soft_command(lio_dev, sc, LIO_OPCODE,
                                 LIO_OPCODE_IF_CFG, 0,
                                 if_cfg.if_cfg64, 0);

        /* Setting wait time in seconds */
        sc->wait_time = LIO_MAX_CMD_TIMEOUT / 1000;

        retval = lio_send_soft_command(lio_dev, sc);
        if (retval == LIO_IQ_SEND_FAILED) {
                lio_dev_err(lio_dev, "iq/oq config failed status: %x\n",
                            retval);
                /* Soft instr is freed by driver in case of failure. */
                goto nic_config_fail;
        }

        /* Sleep on a wait queue till the cond flag indicates that the
         * response arrived or timed-out.
         */
        while ((*sc->status_word == LIO_COMPLETION_WORD_INIT) && --timeout) {
                lio_flush_iq(lio_dev, lio_dev->instr_queue[sc->iq_no]);
                lio_process_ordered_list(lio_dev);
                rte_delay_ms(1);
        }

        retval = resp->status;
        if (retval) {
                lio_dev_err(lio_dev, "iq/oq config failed\n");
                goto nic_config_fail;
        }

        strlcpy(lio_dev->firmware_version,
                resp->cfg_info.lio_firmware_version, LIO_FW_VERSION_LENGTH);

        lio_swap_8B_data((uint64_t *)(&resp->cfg_info),
                         sizeof(struct octeon_if_cfg_info) >> 3);

        num_iqueues = lio_hweight64(resp->cfg_info.iqmask);
        num_oqueues = lio_hweight64(resp->cfg_info.oqmask);

        if (!(num_iqueues) || !(num_oqueues)) {
                lio_dev_err(lio_dev,
                            "Got bad iqueues (%016lx) or oqueues (%016lx) from firmware.\n",
                            (unsigned long)resp->cfg_info.iqmask,
                            (unsigned long)resp->cfg_info.oqmask);
                goto nic_config_fail;
        }

        lio_dev_dbg(lio_dev,
                    "interface %d, iqmask %016lx, oqmask %016lx, numiqueues %d, numoqueues %d\n",
                    eth_dev->data->port_id,
                    (unsigned long)resp->cfg_info.iqmask,
                    (unsigned long)resp->cfg_info.oqmask,
                    num_iqueues, num_oqueues);

        lio_dev->linfo.num_rxpciq = num_oqueues;
        lio_dev->linfo.num_txpciq = num_iqueues;

        for (i = 0; i < num_oqueues; i++) {
                lio_dev->linfo.rxpciq[i].rxpciq64 =
                    resp->cfg_info.linfo.rxpciq[i].rxpciq64;
                lio_dev_dbg(lio_dev, "index %d OQ %d\n",
                            i, lio_dev->linfo.rxpciq[i].s.q_no);
        }

        for (i = 0; i < num_iqueues; i++) {
                lio_dev->linfo.txpciq[i].txpciq64 =
                    resp->cfg_info.linfo.txpciq[i].txpciq64;
                lio_dev_dbg(lio_dev, "index %d IQ %d\n",
                            i, lio_dev->linfo.txpciq[i].s.q_no);
        }

        lio_dev->linfo.hw_addr = resp->cfg_info.linfo.hw_addr;
        lio_dev->linfo.gmxport = resp->cfg_info.linfo.gmxport;
        lio_dev->linfo.link.link_status64 =
                        resp->cfg_info.linfo.link.link_status64;

        /* 64-bit swap required on LE machines */
        lio_swap_8B_data(&lio_dev->linfo.hw_addr, 1);
        for (i = 0; i < RTE_ETHER_ADDR_LEN; i++)
                mac[i] = *((uint8_t *)(((uint8_t *)&lio_dev->linfo.hw_addr) +
                                       2 + i));

        /* Copy the permanent MAC address */
        rte_ether_addr_copy((struct rte_ether_addr *)mac,
                        &eth_dev->data->mac_addrs[0]);

        /* enable firmware checksum support for tunnel packets */
        lio_enable_hw_tunnel_rx_checksum(eth_dev);
        lio_enable_hw_tunnel_tx_checksum(eth_dev);

        lio_dev->glist_lock =
            rte_zmalloc(NULL, sizeof(*lio_dev->glist_lock) * num_iqueues, 0);
        if (lio_dev->glist_lock == NULL)
                return -ENOMEM;

        lio_dev->glist_head =
                rte_zmalloc(NULL, sizeof(*lio_dev->glist_head) * num_iqueues,
                            0);
        if (lio_dev->glist_head == NULL) {
                rte_free(lio_dev->glist_lock);
                lio_dev->glist_lock = NULL;
                return -ENOMEM;
        }

        lio_dev_link_update(eth_dev, 0);

        lio_dev->port_configured = 1;

        lio_free_soft_command(sc);

        /* Reset ioq regs */
        lio_dev->fn_list.setup_device_regs(lio_dev);

        /* Free iq_0 used during init */
        lio_free_instr_queue0(lio_dev);

        return 0;

nic_config_fail:
        lio_dev_err(lio_dev, "Failed retval %d\n", retval);
        lio_free_soft_command(sc);
        lio_free_instr_queue0(lio_dev);

        return -ENODEV;
}

/* Define our ethernet definitions */
static const struct eth_dev_ops liovf_eth_dev_ops = {
        .dev_configure          = lio_dev_configure,
        .dev_start              = lio_dev_start,
        .dev_stop               = lio_dev_stop,
        .dev_set_link_up        = lio_dev_set_link_up,
        .dev_set_link_down      = lio_dev_set_link_down,
        .dev_close              = lio_dev_close,
        .promiscuous_enable     = lio_dev_promiscuous_enable,
        .promiscuous_disable    = lio_dev_promiscuous_disable,
        .allmulticast_enable    = lio_dev_allmulticast_enable,
        .allmulticast_disable   = lio_dev_allmulticast_disable,
        .link_update            = lio_dev_link_update,
        .stats_get              = lio_dev_stats_get,
        .xstats_get             = lio_dev_xstats_get,
        .xstats_get_names       = lio_dev_xstats_get_names,
        .stats_reset            = lio_dev_stats_reset,
        .xstats_reset           = lio_dev_xstats_reset,
        .dev_infos_get          = lio_dev_info_get,
        .vlan_filter_set        = lio_dev_vlan_filter_set,
        .rx_queue_setup         = lio_dev_rx_queue_setup,
        .rx_queue_release       = lio_dev_rx_queue_release,
        .tx_queue_setup         = lio_dev_tx_queue_setup,
        .tx_queue_release       = lio_dev_tx_queue_release,
        .reta_update            = lio_dev_rss_reta_update,
        .reta_query             = lio_dev_rss_reta_query,
        .rss_hash_conf_get      = lio_dev_rss_hash_conf_get,
        .rss_hash_update        = lio_dev_rss_hash_update,
        .udp_tunnel_port_add    = lio_dev_udp_tunnel_add,
        .udp_tunnel_port_del    = lio_dev_udp_tunnel_del,
        .mtu_set                = lio_dev_mtu_set,
};

static void
lio_check_pf_hs_response(void *lio_dev)
{
        struct lio_device *dev = lio_dev;

        /* check till response arrives */
        if (dev->pfvf_hsword.coproc_tics_per_us)
                return;

        cn23xx_vf_handle_mbox(dev);

        rte_eal_alarm_set(1, lio_check_pf_hs_response, lio_dev);
}

/**
 * \brief Identify the LIO device and to map the BAR address space
 * @param lio_dev lio device
 */
static int
lio_chip_specific_setup(struct lio_device *lio_dev)
{
        struct rte_pci_device *pdev = lio_dev->pci_dev;
        uint32_t dev_id = pdev->id.device_id;
        const char *s;
        int ret = 1;

        switch (dev_id) {
        case LIO_CN23XX_VF_VID:
                lio_dev->chip_id = LIO_CN23XX_VF_VID;
                ret = cn23xx_vf_setup_device(lio_dev);
                s = "CN23XX VF";
                break;
        default:
                s = "?";
                lio_dev_err(lio_dev, "Unsupported Chip\n");
        }

        if (!ret)
                lio_dev_info(lio_dev, "DEVICE : %s\n", s);

        return ret;
}

static int
lio_first_time_init(struct lio_device *lio_dev,
                    struct rte_pci_device *pdev)
{
        int dpdk_queues;

        PMD_INIT_FUNC_TRACE();

        /* set dpdk specific pci device pointer */
        lio_dev->pci_dev = pdev;

        /* Identify the LIO type and set device ops */
        if (lio_chip_specific_setup(lio_dev)) {
                lio_dev_err(lio_dev, "Chip specific setup failed\n");
                return -1;
        }

        /* Initialize soft command buffer pool */
        if (lio_setup_sc_buffer_pool(lio_dev)) {
                lio_dev_err(lio_dev, "sc buffer pool allocation failed\n");
                return -1;
        }

        /* Initialize lists to manage the requests of different types that
         * arrive from applications for this lio device.
         */
        lio_setup_response_list(lio_dev);

        if (lio_dev->fn_list.setup_mbox(lio_dev)) {
                lio_dev_err(lio_dev, "Mailbox setup failed\n");
                goto error;
        }

        /* Check PF response */
        lio_check_pf_hs_response((void *)lio_dev);

        /* Do handshake and exit if incompatible PF driver */
        if (cn23xx_pfvf_handshake(lio_dev))
                goto error;

        /* Request and wait for device reset. */
        if (pdev->kdrv == RTE_PCI_KDRV_IGB_UIO) {
                cn23xx_vf_ask_pf_to_do_flr(lio_dev);
                /* FLR wait time doubled as a precaution. */
                rte_delay_ms(LIO_PCI_FLR_WAIT * 2);
        }

        if (lio_dev->fn_list.setup_device_regs(lio_dev)) {
                lio_dev_err(lio_dev, "Failed to configure device registers\n");
                goto error;
        }

        if (lio_setup_instr_queue0(lio_dev)) {
                lio_dev_err(lio_dev, "Failed to setup instruction queue 0\n");
                goto error;
        }

        dpdk_queues = (int)lio_dev->sriov_info.rings_per_vf;

        lio_dev->max_tx_queues = dpdk_queues;
        lio_dev->max_rx_queues = dpdk_queues;

        /* Enable input and output queues for this device */
        if (lio_dev->fn_list.enable_io_queues(lio_dev))
                goto error;

        return 0;

error:
        lio_free_sc_buffer_pool(lio_dev);
        if (lio_dev->mbox[0])
                lio_dev->fn_list.free_mbox(lio_dev);
        if (lio_dev->instr_queue[0])
                lio_free_instr_queue0(lio_dev);

        return -1;
}

static int
lio_eth_dev_uninit(struct rte_eth_dev *eth_dev)
{
        struct lio_device *lio_dev = LIO_DEV(eth_dev);

        PMD_INIT_FUNC_TRACE();

        if (rte_eal_process_type() != RTE_PROC_PRIMARY)
                return 0;

        /* lio_free_sc_buffer_pool */
        lio_free_sc_buffer_pool(lio_dev);

        return 0;
}

static int
lio_eth_dev_init(struct rte_eth_dev *eth_dev)
{
        struct rte_pci_device *pdev = RTE_ETH_DEV_TO_PCI(eth_dev);
        struct lio_device *lio_dev = LIO_DEV(eth_dev);

        PMD_INIT_FUNC_TRACE();

        eth_dev->rx_pkt_burst = &lio_dev_recv_pkts;
        eth_dev->tx_pkt_burst = &lio_dev_xmit_pkts;

        /* Primary does the initialization. */
        if (rte_eal_process_type() != RTE_PROC_PRIMARY)
                return 0;

        rte_eth_copy_pci_info(eth_dev, pdev);

        if (pdev->mem_resource[0].addr) {
                lio_dev->hw_addr = pdev->mem_resource[0].addr;
        } else {
                PMD_INIT_LOG(ERR, "ERROR: Failed to map BAR0\n");
                return -ENODEV;
        }

        lio_dev->eth_dev = eth_dev;
        /* set lio device print string */
        snprintf(lio_dev->dev_string, sizeof(lio_dev->dev_string),
                 "%s[%02x:%02x.%x]", pdev->driver->driver.name,
                 pdev->addr.bus, pdev->addr.devid, pdev->addr.function);

        lio_dev->port_id = eth_dev->data->port_id;

        if (lio_first_time_init(lio_dev, pdev)) {
                lio_dev_err(lio_dev, "Device init failed\n");
                return -EINVAL;
        }

        eth_dev->dev_ops = &liovf_eth_dev_ops;
        eth_dev->data->mac_addrs = rte_zmalloc("lio", RTE_ETHER_ADDR_LEN, 0);
        if (eth_dev->data->mac_addrs == NULL) {
                lio_dev_err(lio_dev,
                            "MAC addresses memory allocation failed\n");
                eth_dev->dev_ops = NULL;
                eth_dev->rx_pkt_burst = NULL;
                eth_dev->tx_pkt_burst = NULL;
                return -ENOMEM;
        }

        rte_atomic64_set(&lio_dev->status, LIO_DEV_RUNNING);
        rte_wmb();

        lio_dev->port_configured = 0;
        /* Always allow unicast packets */
        lio_dev->ifflags |= LIO_IFFLAG_UNICAST;

        return 0;
}

static int
lio_eth_dev_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 lio_device),
                        lio_eth_dev_init);
}

static int
lio_eth_dev_pci_remove(struct rte_pci_device *pci_dev)
{
        return rte_eth_dev_pci_generic_remove(pci_dev,
                                              lio_eth_dev_uninit);
}

/* Set of PCI devices this driver supports */
static const struct rte_pci_id pci_id_liovf_map[] = {
        { RTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, LIO_CN23XX_VF_VID) },
        { .vendor_id = 0, /* sentinel */ }
};

static struct rte_pci_driver rte_liovf_pmd = {
        .id_table       = pci_id_liovf_map,
        .drv_flags      = RTE_PCI_DRV_NEED_MAPPING,
        .probe          = lio_eth_dev_pci_probe,
        .remove         = lio_eth_dev_pci_remove,
};

RTE_PMD_REGISTER_PCI(net_liovf, rte_liovf_pmd);
RTE_PMD_REGISTER_PCI_TABLE(net_liovf, pci_id_liovf_map);
RTE_PMD_REGISTER_KMOD_DEP(net_liovf, "* igb_uio | vfio-pci");
RTE_LOG_REGISTER_SUFFIX(lio_logtype_init, init, NOTICE);
RTE_LOG_REGISTER_SUFFIX(lio_logtype_driver, driver, NOTICE);