/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2017 Marvell International Ltd.
 * Copyright(c) 2017 Semihalf.
 * All rights reserved.
 */

#include <rte_string_fns.h>
#include <rte_ethdev_driver.h>
#include <rte_kvargs.h>
#include <rte_log.h>
#include <rte_malloc.h>
#include <rte_bus_vdev.h>

#include <fcntl.h>
#include <linux/ethtool.h>
#include <linux/sockios.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>

#include <rte_mvep_common.h>
#include "mrvl_ethdev.h"
#include "mrvl_qos.h"
#include "mrvl_flow.h"
#include "mrvl_mtr.h"
#include "mrvl_tm.h"

/* bitmask with reserved hifs */
#define MRVL_MUSDK_HIFS_RESERVED 0x0F
/* bitmask with reserved bpools */
#define MRVL_MUSDK_BPOOLS_RESERVED 0x07
/* bitmask with reserved kernel RSS tables */
#define MRVL_MUSDK_RSS_RESERVED 0x01
/* maximum number of available hifs */
#define MRVL_MUSDK_HIFS_MAX 9

/* prefetch shift */
#define MRVL_MUSDK_PREFETCH_SHIFT 2

/* TCAM has 25 entries reserved for uc/mc filter entries */
#define MRVL_MAC_ADDRS_MAX 25
#define MRVL_MATCH_LEN 16
#define MRVL_PKT_EFFEC_OFFS (MRVL_PKT_OFFS + MV_MH_SIZE)
/* Maximum allowable packet size */
#define MRVL_PKT_SIZE_MAX (10240 - MV_MH_SIZE)

#define MRVL_IFACE_NAME_ARG "iface"
#define MRVL_CFG_ARG "cfg"

#define MRVL_BURST_SIZE 64

#define MRVL_ARP_LENGTH 28

#define MRVL_COOKIE_ADDR_INVALID ~0ULL
#define MRVL_COOKIE_HIGH_ADDR_MASK 0xffffff0000000000

/** Port Rx offload capabilities */
#define MRVL_RX_OFFLOADS (DEV_RX_OFFLOAD_VLAN_FILTER | \
                          DEV_RX_OFFLOAD_JUMBO_FRAME | \
                          DEV_RX_OFFLOAD_CHECKSUM)

/** Port Tx offloads capabilities */
#define MRVL_TX_OFFLOADS (DEV_TX_OFFLOAD_IPV4_CKSUM | \
                          DEV_TX_OFFLOAD_UDP_CKSUM | \
                          DEV_TX_OFFLOAD_TCP_CKSUM | \
                          DEV_TX_OFFLOAD_MULTI_SEGS)

static const char * const valid_args[] = {
        MRVL_IFACE_NAME_ARG,
        MRVL_CFG_ARG,
        NULL
};

static int used_hifs = MRVL_MUSDK_HIFS_RESERVED;
static struct pp2_hif *hifs[RTE_MAX_LCORE];
static int used_bpools[PP2_NUM_PKT_PROC] = {
        [0 ... PP2_NUM_PKT_PROC - 1] = MRVL_MUSDK_BPOOLS_RESERVED
};

static struct pp2_bpool *mrvl_port_to_bpool_lookup[RTE_MAX_ETHPORTS];
static int mrvl_port_bpool_size[PP2_NUM_PKT_PROC][PP2_BPOOL_NUM_POOLS][RTE_MAX_LCORE];
static uint64_t cookie_addr_high = MRVL_COOKIE_ADDR_INVALID;

struct mrvl_ifnames {
        const char *names[PP2_NUM_ETH_PPIO * PP2_NUM_PKT_PROC];
        int idx;
};

/*
 * To use buffer harvesting based on loopback port shadow queue structure
 * was introduced for buffers information bookkeeping.
 *
 * Before sending the packet, related buffer information (pp2_buff_inf) is
 * stored in shadow queue. After packet is transmitted no longer used
 * packet buffer is released back to it's original hardware pool,
 * on condition it originated from interface.
 * In case it  was generated by application itself i.e: mbuf->port field is
 * 0xff then its released to software mempool.
 */
struct mrvl_shadow_txq {
        int head;           /* write index - used when sending buffers */
        int tail;           /* read index - used when releasing buffers */
        u16 size;           /* queue occupied size */
        u16 num_to_release; /* number of descriptors sent, that can be
                             * released
                             */
        struct buff_release_entry ent[MRVL_PP2_TX_SHADOWQ_SIZE]; /* q entries */
};

struct mrvl_rxq {
        struct mrvl_priv *priv;
        struct rte_mempool *mp;
        int queue_id;
        int port_id;
        int cksum_enabled;
        uint64_t bytes_recv;
        uint64_t drop_mac;
};

struct mrvl_txq {
        struct mrvl_priv *priv;
        int queue_id;
        int port_id;
        uint64_t bytes_sent;
        struct mrvl_shadow_txq shadow_txqs[RTE_MAX_LCORE];
        int tx_deferred_start;
};

static int mrvl_lcore_first;
static int mrvl_lcore_last;
static int mrvl_dev_num;

static int mrvl_fill_bpool(struct mrvl_rxq *rxq, int num);
static inline void mrvl_free_sent_buffers(struct pp2_ppio *ppio,
                        struct pp2_hif *hif, unsigned int core_id,
                        struct mrvl_shadow_txq *sq, int qid, int force);

static uint16_t mrvl_tx_pkt_burst(void *txq, struct rte_mbuf **tx_pkts,
                                  uint16_t nb_pkts);
static uint16_t mrvl_tx_sg_pkt_burst(void *txq, struct rte_mbuf **tx_pkts,
                                     uint16_t nb_pkts);
static int rte_pmd_mrvl_remove(struct rte_vdev_device *vdev);
static void mrvl_deinit_pp2(void);
static void mrvl_deinit_hifs(void);


#define MRVL_XSTATS_TBL_ENTRY(name) { \
        #name, offsetof(struct pp2_ppio_statistics, name),      \
        sizeof(((struct pp2_ppio_statistics *)0)->name)         \
}

/* Table with xstats data */
static struct {
        const char *name;
        unsigned int offset;
        unsigned int size;
} mrvl_xstats_tbl[] = {
        MRVL_XSTATS_TBL_ENTRY(rx_bytes),
        MRVL_XSTATS_TBL_ENTRY(rx_packets),
        MRVL_XSTATS_TBL_ENTRY(rx_unicast_packets),
        MRVL_XSTATS_TBL_ENTRY(rx_errors),
        MRVL_XSTATS_TBL_ENTRY(rx_fullq_dropped),
        MRVL_XSTATS_TBL_ENTRY(rx_bm_dropped),
        MRVL_XSTATS_TBL_ENTRY(rx_early_dropped),
        MRVL_XSTATS_TBL_ENTRY(rx_fifo_dropped),
        MRVL_XSTATS_TBL_ENTRY(rx_cls_dropped),
        MRVL_XSTATS_TBL_ENTRY(tx_bytes),
        MRVL_XSTATS_TBL_ENTRY(tx_packets),
        MRVL_XSTATS_TBL_ENTRY(tx_unicast_packets),
        MRVL_XSTATS_TBL_ENTRY(tx_errors)
};

static inline void
mrvl_fill_shadowq(struct mrvl_shadow_txq *sq, struct rte_mbuf *buf)
{
        sq->ent[sq->head].buff.cookie = (uint64_t)buf;
        sq->ent[sq->head].buff.addr = buf ?
                rte_mbuf_data_iova_default(buf) : 0;

        sq->ent[sq->head].bpool =
                (unlikely(!buf || buf->port >= RTE_MAX_ETHPORTS ||
                 buf->refcnt > 1)) ? NULL :
                 mrvl_port_to_bpool_lookup[buf->port];

        sq->head = (sq->head + 1) & MRVL_PP2_TX_SHADOWQ_MASK;
        sq->size++;
}

static inline void
mrvl_fill_desc(struct pp2_ppio_desc *desc, struct rte_mbuf *buf)
{
        pp2_ppio_outq_desc_reset(desc);
        pp2_ppio_outq_desc_set_phys_addr(desc, rte_pktmbuf_iova(buf));
        pp2_ppio_outq_desc_set_pkt_offset(desc, 0);
        pp2_ppio_outq_desc_set_pkt_len(desc, rte_pktmbuf_data_len(buf));
}

static inline int
mrvl_get_bpool_size(int pp2_id, int pool_id)
{
        int i;
        int size = 0;

        for (i = mrvl_lcore_first; i <= mrvl_lcore_last; i++)
                size += mrvl_port_bpool_size[pp2_id][pool_id][i];

        return size;
}

static inline int
mrvl_reserve_bit(int *bitmap, int max)
{
        int n = sizeof(*bitmap) * 8 - __builtin_clz(*bitmap);

        if (n >= max)
                return -1;

        *bitmap |= 1 << n;

        return n;
}

static int
mrvl_init_hif(int core_id)
{
        struct pp2_hif_params params;
        char match[MRVL_MATCH_LEN];
        int ret;

        ret = mrvl_reserve_bit(&used_hifs, MRVL_MUSDK_HIFS_MAX);
        if (ret < 0) {
                MRVL_LOG(ERR, "Failed to allocate hif %d", core_id);
                return ret;
        }

        snprintf(match, sizeof(match), "hif-%d", ret);
        memset(&params, 0, sizeof(params));
        params.match = match;
        params.out_size = MRVL_PP2_AGGR_TXQD_MAX;
        ret = pp2_hif_init(&params, &hifs[core_id]);
        if (ret) {
                MRVL_LOG(ERR, "Failed to initialize hif %d", core_id);
                return ret;
        }

        return 0;
}

static inline struct pp2_hif*
mrvl_get_hif(struct mrvl_priv *priv, int core_id)
{
        int ret;

        if (likely(hifs[core_id] != NULL))
                return hifs[core_id];

        rte_spinlock_lock(&priv->lock);

        ret = mrvl_init_hif(core_id);
        if (ret < 0) {
                MRVL_LOG(ERR, "Failed to allocate hif %d", core_id);
                goto out;
        }

        if (core_id < mrvl_lcore_first)
                mrvl_lcore_first = core_id;

        if (core_id > mrvl_lcore_last)
                mrvl_lcore_last = core_id;
out:
        rte_spinlock_unlock(&priv->lock);

        return hifs[core_id];
}

/**
 * Set tx burst function according to offload flag
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 */
static void
mrvl_set_tx_function(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;

        /* Use a simple Tx queue (no offloads, no multi segs) if possible */
        if (priv->multiseg) {
                RTE_LOG(INFO, PMD, "Using multi-segment tx callback\n");
                dev->tx_pkt_burst = mrvl_tx_sg_pkt_burst;
        } else {
                RTE_LOG(INFO, PMD, "Using single-segment tx callback\n");
                dev->tx_pkt_burst = mrvl_tx_pkt_burst;
        }
}

/**
 * Configure rss based on dpdk rss configuration.
 *
 * @param priv
 *   Pointer to private structure.
 * @param rss_conf
 *   Pointer to RSS configuration.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_configure_rss(struct mrvl_priv *priv, struct rte_eth_rss_conf *rss_conf)
{
        if (rss_conf->rss_key)
                MRVL_LOG(WARNING, "Changing hash key is not supported");

        if (rss_conf->rss_hf == 0) {
                priv->ppio_params.inqs_params.hash_type = PP2_PPIO_HASH_T_NONE;
        } else if (rss_conf->rss_hf & ETH_RSS_IPV4) {
                priv->ppio_params.inqs_params.hash_type =
                        PP2_PPIO_HASH_T_2_TUPLE;
        } else if (rss_conf->rss_hf & ETH_RSS_NONFRAG_IPV4_TCP) {
                priv->ppio_params.inqs_params.hash_type =
                        PP2_PPIO_HASH_T_5_TUPLE;
                priv->rss_hf_tcp = 1;
        } else if (rss_conf->rss_hf & ETH_RSS_NONFRAG_IPV4_UDP) {
                priv->ppio_params.inqs_params.hash_type =
                        PP2_PPIO_HASH_T_5_TUPLE;
                priv->rss_hf_tcp = 0;
        } else {
                return -EINVAL;
        }

        return 0;
}

/**
 * Ethernet device configuration.
 *
 * Prepare the driver for a given number of TX and RX queues and
 * configure RSS.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_dev_configure(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret;

        if (priv->ppio) {
                MRVL_LOG(INFO, "Device reconfiguration is not supported");
                return -EINVAL;
        }

        if (dev->data->dev_conf.rxmode.mq_mode != ETH_MQ_RX_NONE &&
            dev->data->dev_conf.rxmode.mq_mode != ETH_MQ_RX_RSS) {
                MRVL_LOG(INFO, "Unsupported rx multi queue mode %d",
                        dev->data->dev_conf.rxmode.mq_mode);
                return -EINVAL;
        }

        if (dev->data->dev_conf.rxmode.split_hdr_size) {
                MRVL_LOG(INFO, "Split headers not supported");
                return -EINVAL;
        }

        if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
                dev->data->mtu = dev->data->dev_conf.rxmode.max_rx_pkt_len -
                                 MRVL_PP2_ETH_HDRS_LEN;

        if (dev->data->dev_conf.txmode.offloads & DEV_TX_OFFLOAD_MULTI_SEGS)
                priv->multiseg = 1;

        ret = mrvl_configure_rxqs(priv, dev->data->port_id,
                                  dev->data->nb_rx_queues);
        if (ret < 0)
                return ret;

        ret = mrvl_configure_txqs(priv, dev->data->port_id,
                                  dev->data->nb_tx_queues);
        if (ret < 0)
                return ret;

        priv->ppio_params.outqs_params.num_outqs = dev->data->nb_tx_queues;
        priv->ppio_params.maintain_stats = 1;
        priv->nb_rx_queues = dev->data->nb_rx_queues;

        ret = mrvl_tm_init(dev);
        if (ret < 0)
                return ret;

        if (dev->data->nb_rx_queues == 1 &&
            dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
                MRVL_LOG(WARNING, "Disabling hash for 1 rx queue");
                priv->ppio_params.inqs_params.hash_type = PP2_PPIO_HASH_T_NONE;

                return 0;
        }

        return mrvl_configure_rss(priv,
                                  &dev->data->dev_conf.rx_adv_conf.rss_conf);
}

/**
 * DPDK callback to change the MTU.
 *
 * Setting the MTU affects hardware MRU (packets larger than the MRU
 * will be dropped).
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param mtu
 *   New MTU.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        uint16_t mru;
        uint16_t mbuf_data_size = 0; /* SW buffer size */
        int ret;

        mru = MRVL_PP2_MTU_TO_MRU(mtu);
        /*
         * min_rx_buf_size is equal to mbuf data size
         * if pmd didn't set it differently
         */
        mbuf_data_size = dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM;
        /* Prevent PMD from:
         * - setting mru greater than the mbuf size resulting in
         * hw and sw buffer size mismatch
         * - setting mtu that requires the support of scattered packets
         * when this feature has not been enabled/supported so far
         * (TODO check scattered_rx flag here once scattered RX is supported).
         */
        if (mru + MRVL_PKT_OFFS > mbuf_data_size) {
                mru = mbuf_data_size - MRVL_PKT_OFFS;
                mtu = MRVL_PP2_MRU_TO_MTU(mru);
                MRVL_LOG(WARNING, "MTU too big, max MTU possible limitted "
                        "by current mbuf size: %u. Set MTU to %u, MRU to %u",
                        mbuf_data_size, mtu, mru);
        }

        if (mtu < RTE_ETHER_MIN_MTU || mru > MRVL_PKT_SIZE_MAX) {
                MRVL_LOG(ERR, "Invalid MTU [%u] or MRU [%u]", mtu, mru);
                return -EINVAL;
        }

        dev->data->mtu = mtu;
        dev->data->dev_conf.rxmode.max_rx_pkt_len = mru - MV_MH_SIZE;

        if (!priv->ppio)
                return 0;

        ret = pp2_ppio_set_mru(priv->ppio, mru);
        if (ret) {
                MRVL_LOG(ERR, "Failed to change MRU");
                return ret;
        }

        ret = pp2_ppio_set_mtu(priv->ppio, mtu);
        if (ret) {
                MRVL_LOG(ERR, "Failed to change MTU");
                return ret;
        }

        return 0;
}

/**
 * DPDK callback to bring the link up.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_dev_set_link_up(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret;

        if (!priv->ppio)
                return -EPERM;

        ret = pp2_ppio_enable(priv->ppio);
        if (ret)
                return ret;

        /*
         * mtu/mru can be updated if pp2_ppio_enable() was called at least once
         * as pp2_ppio_enable() changes port->t_mode from default 0 to
         * PP2_TRAFFIC_INGRESS_EGRESS.
         *
         * Set mtu to default DPDK value here.
         */
        ret = mrvl_mtu_set(dev, dev->data->mtu);
        if (ret)
                pp2_ppio_disable(priv->ppio);

        return ret;
}

/**
 * DPDK callback to bring the link down.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_dev_set_link_down(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;

        if (!priv->ppio)
                return -EPERM;

        return pp2_ppio_disable(priv->ppio);
}

/**
 * DPDK callback to start tx queue.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param queue_id
 *   Transmit queue index.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_tx_queue_start(struct rte_eth_dev *dev, uint16_t queue_id)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret;

        if (!priv)
                return -EPERM;

        /* passing 1 enables given tx queue */
        ret = pp2_ppio_set_outq_state(priv->ppio, queue_id, 1);
        if (ret) {
                MRVL_LOG(ERR, "Failed to start txq %d", queue_id);
                return ret;
        }

        dev->data->tx_queue_state[queue_id] = RTE_ETH_QUEUE_STATE_STARTED;

        return 0;
}

/**
 * DPDK callback to stop tx queue.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param queue_id
 *   Transmit queue index.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_tx_queue_stop(struct rte_eth_dev *dev, uint16_t queue_id)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret;

        if (!priv->ppio)
                return -EPERM;

        /* passing 0 disables given tx queue */
        ret = pp2_ppio_set_outq_state(priv->ppio, queue_id, 0);
        if (ret) {
                MRVL_LOG(ERR, "Failed to stop txq %d", queue_id);
                return ret;
        }

        dev->data->tx_queue_state[queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;

        return 0;
}

/**
 * DPDK callback to start the device.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *
 * @return
 *   0 on success, negative errno value on failure.
 */
static int
mrvl_dev_start(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        char match[MRVL_MATCH_LEN];
        int ret = 0, i, def_init_size;

        if (priv->ppio)
                return mrvl_dev_set_link_up(dev);

        snprintf(match, sizeof(match), "ppio-%d:%d",
                 priv->pp_id, priv->ppio_id);
        priv->ppio_params.match = match;

        /*
         * Calculate the minimum bpool size for refill feature as follows:
         * 2 default burst sizes multiply by number of rx queues.
         * If the bpool size will be below this value, new buffers will
         * be added to the pool.
         */
        priv->bpool_min_size = priv->nb_rx_queues * MRVL_BURST_SIZE * 2;

        /* In case initial bpool size configured in queues setup is
         * smaller than minimum size add more buffers
         */
        def_init_size = priv->bpool_min_size + MRVL_BURST_SIZE * 2;
        if (priv->bpool_init_size < def_init_size) {
                int buffs_to_add = def_init_size - priv->bpool_init_size;

                priv->bpool_init_size += buffs_to_add;
                ret = mrvl_fill_bpool(dev->data->rx_queues[0], buffs_to_add);
                if (ret)
                        MRVL_LOG(ERR, "Failed to add buffers to bpool");
        }

        /*
         * Calculate the maximum bpool size for refill feature as follows:
         * maximum number of descriptors in rx queue multiply by number
         * of rx queues plus minimum bpool size.
         * In case the bpool size will exceed this value, superfluous buffers
         * will be removed
         */
        priv->bpool_max_size = (priv->nb_rx_queues * MRVL_PP2_RXD_MAX) +
                                priv->bpool_min_size;

        ret = pp2_ppio_init(&priv->ppio_params, &priv->ppio);
        if (ret) {
                MRVL_LOG(ERR, "Failed to init ppio");
                return ret;
        }

        /*
         * In case there are some some stale uc/mc mac addresses flush them
         * here. It cannot be done during mrvl_dev_close() as port information
         * is already gone at that point (due to pp2_ppio_deinit() in
         * mrvl_dev_stop()).
         */
        if (!priv->uc_mc_flushed) {
                ret = pp2_ppio_flush_mac_addrs(priv->ppio, 1, 1);
                if (ret) {
                        MRVL_LOG(ERR,
                                "Failed to flush uc/mc filter list");
                        goto out;
                }
                priv->uc_mc_flushed = 1;
        }

        if (!priv->vlan_flushed) {
                ret = pp2_ppio_flush_vlan(priv->ppio);
                if (ret) {
                        MRVL_LOG(ERR, "Failed to flush vlan list");
                        /*
                         * TODO
                         * once pp2_ppio_flush_vlan() is supported jump to out
                         * goto out;
                         */
                }
                priv->vlan_flushed = 1;
        }
        ret = mrvl_mtu_set(dev, dev->data->mtu);
        if (ret)
                MRVL_LOG(ERR, "Failed to set MTU to %d", dev->data->mtu);

        /* For default QoS config, don't start classifier. */
        if (mrvl_qos_cfg  &&
            mrvl_qos_cfg->port[dev->data->port_id].use_global_defaults == 0) {
                ret = mrvl_start_qos_mapping(priv);
                if (ret) {
                        MRVL_LOG(ERR, "Failed to setup QoS mapping");
                        goto out;
                }
        }

        ret = mrvl_dev_set_link_up(dev);
        if (ret) {
                MRVL_LOG(ERR, "Failed to set link up");
                goto out;
        }

        /* start tx queues */
        for (i = 0; i < dev->data->nb_tx_queues; i++) {
                struct mrvl_txq *txq = dev->data->tx_queues[i];

                dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;

                if (!txq->tx_deferred_start)
                        continue;

                /*
                 * All txqs are started by default. Stop them
                 * so that tx_deferred_start works as expected.
                 */
                ret = mrvl_tx_queue_stop(dev, i);
                if (ret)
                        goto out;
        }

        mrvl_flow_init(dev);
        mrvl_mtr_init(dev);
        mrvl_set_tx_function(dev);

        return 0;
out:
        MRVL_LOG(ERR, "Failed to start device");
        pp2_ppio_deinit(priv->ppio);
        return ret;
}

/**
 * Flush receive queues.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 */
static void
mrvl_flush_rx_queues(struct rte_eth_dev *dev)
{
        int i;

        MRVL_LOG(INFO, "Flushing rx queues");
        for (i = 0; i < dev->data->nb_rx_queues; i++) {
                int ret, num;

                do {
                        struct mrvl_rxq *q = dev->data->rx_queues[i];
                        struct pp2_ppio_desc descs[MRVL_PP2_RXD_MAX];

                        num = MRVL_PP2_RXD_MAX;
                        ret = pp2_ppio_recv(q->priv->ppio,
                                            q->priv->rxq_map[q->queue_id].tc,
                                            q->priv->rxq_map[q->queue_id].inq,
                                            descs, (uint16_t *)&num);
                } while (ret == 0 && num);
        }
}

/**
 * Flush transmit shadow queues.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 */
static void
mrvl_flush_tx_shadow_queues(struct rte_eth_dev *dev)
{
        int i, j;
        struct mrvl_txq *txq;

        MRVL_LOG(INFO, "Flushing tx shadow queues");
        for (i = 0; i < dev->data->nb_tx_queues; i++) {
                txq = (struct mrvl_txq *)dev->data->tx_queues[i];

                for (j = 0; j < RTE_MAX_LCORE; j++) {
                        struct mrvl_shadow_txq *sq;

                        if (!hifs[j])
                                continue;

                        sq = &txq->shadow_txqs[j];
                        mrvl_free_sent_buffers(txq->priv->ppio,
                                hifs[j], j, sq, txq->queue_id, 1);
                        while (sq->tail != sq->head) {
                                uint64_t addr = cookie_addr_high |
                                        sq->ent[sq->tail].buff.cookie;
                                rte_pktmbuf_free(
                                        (struct rte_mbuf *)addr);
                                sq->tail = (sq->tail + 1) &
                                            MRVL_PP2_TX_SHADOWQ_MASK;
                        }
                        memset(sq, 0, sizeof(*sq));
                }
        }
}

/**
 * Flush hardware bpool (buffer-pool).
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 */
static void
mrvl_flush_bpool(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        struct pp2_hif *hif;
        uint32_t num;
        int ret;
        unsigned int core_id = rte_lcore_id();

        if (core_id == LCORE_ID_ANY)
                core_id = rte_get_main_lcore();

        hif = mrvl_get_hif(priv, core_id);

        ret = pp2_bpool_get_num_buffs(priv->bpool, &num);
        if (ret) {
                MRVL_LOG(ERR, "Failed to get bpool buffers number");
                return;
        }

        while (num--) {
                struct pp2_buff_inf inf;
                uint64_t addr;

                ret = pp2_bpool_get_buff(hif, priv->bpool, &inf);
                if (ret)
                        break;

                addr = cookie_addr_high | inf.cookie;
                rte_pktmbuf_free((struct rte_mbuf *)addr);
        }
}

/**
 * DPDK callback to stop the device.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 */
static int
mrvl_dev_stop(struct rte_eth_dev *dev)
{
        return mrvl_dev_set_link_down(dev);
}

/**
 * DPDK callback to close the device.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 */
static int
mrvl_dev_close(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        size_t i;

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

        mrvl_flush_rx_queues(dev);
        mrvl_flush_tx_shadow_queues(dev);
        mrvl_flow_deinit(dev);
        mrvl_mtr_deinit(dev);

        for (i = 0; i < priv->ppio_params.inqs_params.num_tcs; ++i) {
                struct pp2_ppio_tc_params *tc_params =
                        &priv->ppio_params.inqs_params.tcs_params[i];

                if (tc_params->inqs_params) {
                        rte_free(tc_params->inqs_params);
                        tc_params->inqs_params = NULL;
                }
        }

        if (priv->cls_tbl) {
                pp2_cls_tbl_deinit(priv->cls_tbl);
                priv->cls_tbl = NULL;
        }

        if (priv->qos_tbl) {
                pp2_cls_qos_tbl_deinit(priv->qos_tbl);
                priv->qos_tbl = NULL;
        }

        mrvl_flush_bpool(dev);
        mrvl_tm_deinit(dev);

        if (priv->ppio) {
                pp2_ppio_deinit(priv->ppio);
                priv->ppio = NULL;
        }

        /* policer must be released after ppio deinitialization */
        if (priv->default_policer) {
                pp2_cls_plcr_deinit(priv->default_policer);
                priv->default_policer = NULL;
        }


        if (priv->bpool) {
                pp2_bpool_deinit(priv->bpool);
                used_bpools[priv->pp_id] &= ~(1 << priv->bpool_bit);
                priv->bpool = NULL;
        }

        mrvl_dev_num--;

        if (mrvl_dev_num == 0) {
                MRVL_LOG(INFO, "Perform MUSDK deinit");
                mrvl_deinit_hifs();
                mrvl_deinit_pp2();
                rte_mvep_deinit(MVEP_MOD_T_PP2);
        }

        return 0;
}

/**
 * DPDK callback to retrieve physical link information.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param wait_to_complete
 *   Wait for request completion (ignored).
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
{
        /*
         * TODO
         * once MUSDK provides necessary API use it here
         */
        struct mrvl_priv *priv = dev->data->dev_private;
        struct ethtool_cmd edata;
        struct ifreq req;
        int ret, fd, link_up;

        if (!priv->ppio)
                return -EPERM;

        edata.cmd = ETHTOOL_GSET;

        strcpy(req.ifr_name, dev->data->name);
        req.ifr_data = (void *)&edata;

        fd = socket(AF_INET, SOCK_DGRAM, 0);
        if (fd == -1)
                return -EFAULT;

        ret = ioctl(fd, SIOCETHTOOL, &req);
        if (ret == -1) {
                close(fd);
                return -EFAULT;
        }

        close(fd);

        switch (ethtool_cmd_speed(&edata)) {
        case SPEED_10:
                dev->data->dev_link.link_speed = ETH_SPEED_NUM_10M;
                break;
        case SPEED_100:
                dev->data->dev_link.link_speed = ETH_SPEED_NUM_100M;
                break;
        case SPEED_1000:
                dev->data->dev_link.link_speed = ETH_SPEED_NUM_1G;
                break;
        case SPEED_10000:
                dev->data->dev_link.link_speed = ETH_SPEED_NUM_10G;
                break;
        default:
                dev->data->dev_link.link_speed = ETH_SPEED_NUM_NONE;
        }

        dev->data->dev_link.link_duplex = edata.duplex ? ETH_LINK_FULL_DUPLEX :
                                                         ETH_LINK_HALF_DUPLEX;
        dev->data->dev_link.link_autoneg = edata.autoneg ? ETH_LINK_AUTONEG :
                                                           ETH_LINK_FIXED;
        pp2_ppio_get_link_state(priv->ppio, &link_up);
        dev->data->dev_link.link_status = link_up ? ETH_LINK_UP : ETH_LINK_DOWN;

        return 0;
}

/**
 * DPDK callback to enable promiscuous mode.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *

 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_promiscuous_enable(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret;

        if (!priv->ppio)
                return 0;

        if (priv->isolated)
                return 0;

        ret = pp2_ppio_set_promisc(priv->ppio, 1);
        if (ret) {
                MRVL_LOG(ERR, "Failed to enable promiscuous mode");
                return -EAGAIN;
        }

        return 0;
}

/**
 * DPDK callback to enable allmulti mode.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_allmulticast_enable(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret;

        if (!priv->ppio)
                return 0;

        if (priv->isolated)
                return 0;

        ret = pp2_ppio_set_mc_promisc(priv->ppio, 1);
        if (ret) {
                MRVL_LOG(ERR, "Failed enable all-multicast mode");
                return -EAGAIN;
        }

        return 0;
}

/**
 * DPDK callback to disable promiscuous mode.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_promiscuous_disable(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret;

        if (!priv->ppio)
                return 0;

        ret = pp2_ppio_set_promisc(priv->ppio, 0);
        if (ret) {
                MRVL_LOG(ERR, "Failed to disable promiscuous mode");
                return -EAGAIN;
        }

        return 0;
}

/**
 * DPDK callback to disable allmulticast mode.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_allmulticast_disable(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret;

        if (!priv->ppio)
                return 0;

        ret = pp2_ppio_set_mc_promisc(priv->ppio, 0);
        if (ret) {
                MRVL_LOG(ERR, "Failed to disable all-multicast mode");
                return -EAGAIN;
        }

        return 0;
}

/**
 * DPDK callback to remove a MAC address.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param index
 *   MAC address index.
 */
static void
mrvl_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        char buf[RTE_ETHER_ADDR_FMT_SIZE];
        int ret;

        if (!priv->ppio)
                return;

        if (priv->isolated)
                return;

        ret = pp2_ppio_remove_mac_addr(priv->ppio,
                                       dev->data->mac_addrs[index].addr_bytes);
        if (ret) {
                rte_ether_format_addr(buf, sizeof(buf),
                                  &dev->data->mac_addrs[index]);
                MRVL_LOG(ERR, "Failed to remove mac %s", buf);
        }
}

/**
 * DPDK callback to add a MAC address.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param mac_addr
 *   MAC address to register.
 * @param index
 *   MAC address index.
 * @param vmdq
 *   VMDq pool index to associate address with (unused).
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr,
                  uint32_t index, uint32_t vmdq __rte_unused)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        char buf[RTE_ETHER_ADDR_FMT_SIZE];
        int ret;

        if (priv->isolated)
                return -ENOTSUP;

        if (index == 0)
                /* For setting index 0, mrvl_mac_addr_set() should be used.*/
                return -1;

        if (!priv->ppio)
                return 0;

        /*
         * Maximum number of uc addresses can be tuned via kernel module mvpp2x
         * parameter uc_filter_max. Maximum number of mc addresses is then
         * MRVL_MAC_ADDRS_MAX - uc_filter_max. Currently it defaults to 4 and
         * 21 respectively.
         *
         * If more than uc_filter_max uc addresses were added to filter list
         * then NIC will switch to promiscuous mode automatically.
         *
         * If more than MRVL_MAC_ADDRS_MAX - uc_filter_max number mc addresses
         * were added to filter list then NIC will switch to all-multicast mode
         * automatically.
         */
        ret = pp2_ppio_add_mac_addr(priv->ppio, mac_addr->addr_bytes);
        if (ret) {
                rte_ether_format_addr(buf, sizeof(buf), mac_addr);
                MRVL_LOG(ERR, "Failed to add mac %s", buf);
                return -1;
        }

        return 0;
}

/**
 * DPDK callback to set the primary MAC address.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param mac_addr
 *   MAC address to register.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret;

        if (!priv->ppio)
                return 0;

        if (priv->isolated)
                return -ENOTSUP;

        ret = pp2_ppio_set_mac_addr(priv->ppio, mac_addr->addr_bytes);
        if (ret) {
                char buf[RTE_ETHER_ADDR_FMT_SIZE];
                rte_ether_format_addr(buf, sizeof(buf), mac_addr);
                MRVL_LOG(ERR, "Failed to set mac to %s", buf);
        }

        return ret;
}

/**
 * DPDK callback to get device statistics.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param stats
 *   Stats structure output buffer.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        struct pp2_ppio_statistics ppio_stats;
        uint64_t drop_mac = 0;
        unsigned int i, idx, ret;

        if (!priv->ppio)
                return -EPERM;

        for (i = 0; i < dev->data->nb_rx_queues; i++) {
                struct mrvl_rxq *rxq = dev->data->rx_queues[i];
                struct pp2_ppio_inq_statistics rx_stats;

                if (!rxq)
                        continue;

                idx = rxq->queue_id;
                if (unlikely(idx >= RTE_ETHDEV_QUEUE_STAT_CNTRS)) {
                        MRVL_LOG(ERR,
                                "rx queue %d stats out of range (0 - %d)",
                                idx, RTE_ETHDEV_QUEUE_STAT_CNTRS - 1);
                        continue;
                }

                ret = pp2_ppio_inq_get_statistics(priv->ppio,
                                                  priv->rxq_map[idx].tc,
                                                  priv->rxq_map[idx].inq,
                                                  &rx_stats, 0);
                if (unlikely(ret)) {
                        MRVL_LOG(ERR,
                                "Failed to update rx queue %d stats", idx);
                        break;
                }

                stats->q_ibytes[idx] = rxq->bytes_recv;
                stats->q_ipackets[idx] = rx_stats.enq_desc - rxq->drop_mac;
                stats->q_errors[idx] = rx_stats.drop_early +
                                       rx_stats.drop_fullq +
                                       rx_stats.drop_bm +
                                       rxq->drop_mac;
                stats->ibytes += rxq->bytes_recv;
                drop_mac += rxq->drop_mac;
        }

        for (i = 0; i < dev->data->nb_tx_queues; i++) {
                struct mrvl_txq *txq = dev->data->tx_queues[i];
                struct pp2_ppio_outq_statistics tx_stats;

                if (!txq)
                        continue;

                idx = txq->queue_id;
                if (unlikely(idx >= RTE_ETHDEV_QUEUE_STAT_CNTRS)) {
                        MRVL_LOG(ERR,
                                "tx queue %d stats out of range (0 - %d)",
                                idx, RTE_ETHDEV_QUEUE_STAT_CNTRS - 1);
                }

                ret = pp2_ppio_outq_get_statistics(priv->ppio, idx,
                                                   &tx_stats, 0);
                if (unlikely(ret)) {
                        MRVL_LOG(ERR,
                                "Failed to update tx queue %d stats", idx);
                        break;
                }

                stats->q_opackets[idx] = tx_stats.deq_desc;
                stats->q_obytes[idx] = txq->bytes_sent;
                stats->obytes += txq->bytes_sent;
        }

        ret = pp2_ppio_get_statistics(priv->ppio, &ppio_stats, 0);
        if (unlikely(ret)) {
                MRVL_LOG(ERR, "Failed to update port statistics");
                return ret;
        }

        stats->ipackets += ppio_stats.rx_packets - drop_mac;
        stats->opackets += ppio_stats.tx_packets;
        stats->imissed += ppio_stats.rx_fullq_dropped +
                          ppio_stats.rx_bm_dropped +
                          ppio_stats.rx_early_dropped +
                          ppio_stats.rx_fifo_dropped +
                          ppio_stats.rx_cls_dropped;
        stats->ierrors = drop_mac;

        return 0;
}

/**
 * DPDK callback to clear device statistics.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_stats_reset(struct rte_eth_dev *dev)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int i;

        if (!priv->ppio)
                return 0;

        for (i = 0; i < dev->data->nb_rx_queues; i++) {
                struct mrvl_rxq *rxq = dev->data->rx_queues[i];

                pp2_ppio_inq_get_statistics(priv->ppio, priv->rxq_map[i].tc,
                                            priv->rxq_map[i].inq, NULL, 1);
                rxq->bytes_recv = 0;
                rxq->drop_mac = 0;
        }

        for (i = 0; i < dev->data->nb_tx_queues; i++) {
                struct mrvl_txq *txq = dev->data->tx_queues[i];

                pp2_ppio_outq_get_statistics(priv->ppio, i, NULL, 1);
                txq->bytes_sent = 0;
        }

        return pp2_ppio_get_statistics(priv->ppio, NULL, 1);
}

/**
 * DPDK callback to get extended statistics.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param stats
 *   Pointer to xstats table.
 * @param n
 *   Number of entries in xstats table.
 * @return
 *   Negative value on error, number of read xstats otherwise.
 */
static int
mrvl_xstats_get(struct rte_eth_dev *dev,
                struct rte_eth_xstat *stats, unsigned int n)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        struct pp2_ppio_statistics ppio_stats;
        unsigned int i;

        if (!stats)
                return 0;

        pp2_ppio_get_statistics(priv->ppio, &ppio_stats, 0);
        for (i = 0; i < n && i < RTE_DIM(mrvl_xstats_tbl); i++) {
                uint64_t val;

                if (mrvl_xstats_tbl[i].size == sizeof(uint32_t))
                        val = *(uint32_t *)((uint8_t *)&ppio_stats +
                                            mrvl_xstats_tbl[i].offset);
                else if (mrvl_xstats_tbl[i].size == sizeof(uint64_t))
                        val = *(uint64_t *)((uint8_t *)&ppio_stats +
                                            mrvl_xstats_tbl[i].offset);
                else
                        return -EINVAL;

                stats[i].id = i;
                stats[i].value = val;
        }

        return n;
}

/**
 * DPDK callback to reset extended statistics.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_xstats_reset(struct rte_eth_dev *dev)
{
        return mrvl_stats_reset(dev);
}

/**
 * DPDK callback to get extended statistics names.
 *
 * @param dev (unused)
 *   Pointer to Ethernet device structure.
 * @param xstats_names
 *   Pointer to xstats names table.
 * @param size
 *   Size of the xstats names table.
 * @return
 *   Number of read names.
 */
static int
mrvl_xstats_get_names(struct rte_eth_dev *dev __rte_unused,
                      struct rte_eth_xstat_name *xstats_names,
                      unsigned int size)
{
        unsigned int i;

        if (!xstats_names)
                return RTE_DIM(mrvl_xstats_tbl);

        for (i = 0; i < size && i < RTE_DIM(mrvl_xstats_tbl); i++)
                strlcpy(xstats_names[i].name, mrvl_xstats_tbl[i].name,
                        RTE_ETH_XSTATS_NAME_SIZE);

        return size;
}

/**
 * DPDK callback to get information about the device.
 *
 * @param dev
 *   Pointer to Ethernet device structure (unused).
 * @param info
 *   Info structure output buffer.
 */
static int
mrvl_dev_infos_get(struct rte_eth_dev *dev __rte_unused,
                   struct rte_eth_dev_info *info)
{
        info->speed_capa = ETH_LINK_SPEED_10M |
                           ETH_LINK_SPEED_100M |
                           ETH_LINK_SPEED_1G |
                           ETH_LINK_SPEED_10G;

        info->max_rx_queues = MRVL_PP2_RXQ_MAX;
        info->max_tx_queues = MRVL_PP2_TXQ_MAX;
        info->max_mac_addrs = MRVL_MAC_ADDRS_MAX;

        info->rx_desc_lim.nb_max = MRVL_PP2_RXD_MAX;
        info->rx_desc_lim.nb_min = MRVL_PP2_RXD_MIN;
        info->rx_desc_lim.nb_align = MRVL_PP2_RXD_ALIGN;

        info->tx_desc_lim.nb_max = MRVL_PP2_TXD_MAX;
        info->tx_desc_lim.nb_min = MRVL_PP2_TXD_MIN;
        info->tx_desc_lim.nb_align = MRVL_PP2_TXD_ALIGN;

        info->rx_offload_capa = MRVL_RX_OFFLOADS;
        info->rx_queue_offload_capa = MRVL_RX_OFFLOADS;

        info->tx_offload_capa = MRVL_TX_OFFLOADS;
        info->tx_queue_offload_capa = MRVL_TX_OFFLOADS;

        info->flow_type_rss_offloads = ETH_RSS_IPV4 |
                                       ETH_RSS_NONFRAG_IPV4_TCP |
                                       ETH_RSS_NONFRAG_IPV4_UDP;

        /* By default packets are dropped if no descriptors are available */
        info->default_rxconf.rx_drop_en = 1;

        info->max_rx_pktlen = MRVL_PKT_SIZE_MAX;

        return 0;
}

/**
 * Return supported packet types.
 *
 * @param dev
 *   Pointer to Ethernet device structure (unused).
 *
 * @return
 *   Const pointer to the table with supported packet types.
 */
static const uint32_t *
mrvl_dev_supported_ptypes_get(struct rte_eth_dev *dev __rte_unused)
{
        static const uint32_t ptypes[] = {
                RTE_PTYPE_L2_ETHER,
                RTE_PTYPE_L2_ETHER_VLAN,
                RTE_PTYPE_L2_ETHER_QINQ,
                RTE_PTYPE_L3_IPV4,
                RTE_PTYPE_L3_IPV4_EXT,
                RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
                RTE_PTYPE_L3_IPV6,
                RTE_PTYPE_L3_IPV6_EXT,
                RTE_PTYPE_L2_ETHER_ARP,
                RTE_PTYPE_L4_TCP,
                RTE_PTYPE_L4_UDP
        };

        return ptypes;
}

/**
 * DPDK callback to get information about specific receive queue.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param rx_queue_id
 *   Receive queue index.
 * @param qinfo
 *   Receive queue information structure.
 */
static void mrvl_rxq_info_get(struct rte_eth_dev *dev, uint16_t rx_queue_id,
                              struct rte_eth_rxq_info *qinfo)
{
        struct mrvl_rxq *q = dev->data->rx_queues[rx_queue_id];
        struct mrvl_priv *priv = dev->data->dev_private;
        int inq = priv->rxq_map[rx_queue_id].inq;
        int tc = priv->rxq_map[rx_queue_id].tc;
        struct pp2_ppio_tc_params *tc_params =
                &priv->ppio_params.inqs_params.tcs_params[tc];

        qinfo->mp = q->mp;
        qinfo->nb_desc = tc_params->inqs_params[inq].size;
}

/**
 * DPDK callback to get information about specific transmit queue.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param tx_queue_id
 *   Transmit queue index.
 * @param qinfo
 *   Transmit queue information structure.
 */
static void mrvl_txq_info_get(struct rte_eth_dev *dev, uint16_t tx_queue_id,
                              struct rte_eth_txq_info *qinfo)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        struct mrvl_txq *txq = dev->data->tx_queues[tx_queue_id];

        qinfo->nb_desc =
                priv->ppio_params.outqs_params.outqs_params[tx_queue_id].size;
        qinfo->conf.tx_deferred_start = txq->tx_deferred_start;
}

/**
 * DPDK callback to Configure a VLAN filter.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param vlan_id
 *   VLAN ID to filter.
 * @param on
 *   Toggle filter.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
{
        struct mrvl_priv *priv = dev->data->dev_private;

        if (!priv->ppio)
                return -EPERM;

        if (priv->isolated)
                return -ENOTSUP;

        return on ? pp2_ppio_add_vlan(priv->ppio, vlan_id) :
                    pp2_ppio_remove_vlan(priv->ppio, vlan_id);
}

/**
 * Release buffers to hardware bpool (buffer-pool)
 *
 * @param rxq
 *   Receive queue pointer.
 * @param num
 *   Number of buffers to release to bpool.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_fill_bpool(struct mrvl_rxq *rxq, int num)
{
        struct buff_release_entry entries[MRVL_PP2_RXD_MAX];
        struct rte_mbuf *mbufs[MRVL_PP2_RXD_MAX];
        int i, ret;
        unsigned int core_id;
        struct pp2_hif *hif;
        struct pp2_bpool *bpool;

        core_id = rte_lcore_id();
        if (core_id == LCORE_ID_ANY)
                core_id = rte_get_main_lcore();

        hif = mrvl_get_hif(rxq->priv, core_id);
        if (!hif)
                return -1;

        bpool = rxq->priv->bpool;

        ret = rte_pktmbuf_alloc_bulk(rxq->mp, mbufs, num);
        if (ret)
                return ret;

        if (cookie_addr_high == MRVL_COOKIE_ADDR_INVALID)
                cookie_addr_high =
                        (uint64_t)mbufs[0] & MRVL_COOKIE_HIGH_ADDR_MASK;

        for (i = 0; i < num; i++) {
                if (((uint64_t)mbufs[i] & MRVL_COOKIE_HIGH_ADDR_MASK)
                        != cookie_addr_high) {
                        MRVL_LOG(ERR,
                                "mbuf virtual addr high 0x%lx out of range",
                                (uint64_t)mbufs[i] >> 32);
                        goto out;
                }

                entries[i].buff.addr =
                        rte_mbuf_data_iova_default(mbufs[i]);
                entries[i].buff.cookie = (uint64_t)mbufs[i];
                entries[i].bpool = bpool;
        }

        pp2_bpool_put_buffs(hif, entries, (uint16_t *)&i);
        mrvl_port_bpool_size[bpool->pp2_id][bpool->id][core_id] += i;

        if (i != num)
                goto out;

        return 0;
out:
        for (; i < num; i++)
                rte_pktmbuf_free(mbufs[i]);

        return -1;
}

/**
 * DPDK callback to configure the receive queue.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param idx
 *   RX queue index.
 * @param desc
 *   Number of descriptors to configure in queue.
 * @param socket
 *   NUMA socket on which memory must be allocated.
 * @param conf
 *   Thresholds parameters.
 * @param mp
 *   Memory pool for buffer allocations.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
                    unsigned int socket,
                    const struct rte_eth_rxconf *conf,
                    struct rte_mempool *mp)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        struct mrvl_rxq *rxq;
        uint32_t frame_size, buf_size = rte_pktmbuf_data_room_size(mp);
        uint32_t max_rx_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len;
        int ret, tc, inq;
        uint64_t offloads;

        offloads = conf->offloads | dev->data->dev_conf.rxmode.offloads;

        if (priv->rxq_map[idx].tc == MRVL_UNKNOWN_TC) {
                /*
                 * Unknown TC mapping, mapping will not have a correct queue.
                 */
                MRVL_LOG(ERR, "Unknown TC mapping for queue %hu eth%hhu",
                        idx, priv->ppio_id);
                return -EFAULT;
        }

        frame_size = buf_size - RTE_PKTMBUF_HEADROOM - MRVL_PKT_EFFEC_OFFS;
        if (frame_size < max_rx_pkt_len) {
                MRVL_LOG(WARNING,
                        "Mbuf size must be increased to %u bytes to hold up "
                        "to %u bytes of data.",
                        buf_size + max_rx_pkt_len - frame_size,
                        max_rx_pkt_len);
                dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
                MRVL_LOG(INFO, "Setting max rx pkt len to %u",
                        dev->data->dev_conf.rxmode.max_rx_pkt_len);
        }

        if (dev->data->rx_queues[idx]) {
                rte_free(dev->data->rx_queues[idx]);
                dev->data->rx_queues[idx] = NULL;
        }

        rxq = rte_zmalloc_socket("rxq", sizeof(*rxq), 0, socket);
        if (!rxq)
                return -ENOMEM;

        rxq->priv = priv;
        rxq->mp = mp;
        rxq->cksum_enabled = offloads & DEV_RX_OFFLOAD_IPV4_CKSUM;
        rxq->queue_id = idx;
        rxq->port_id = dev->data->port_id;
        mrvl_port_to_bpool_lookup[rxq->port_id] = priv->bpool;

        tc = priv->rxq_map[rxq->queue_id].tc,
        inq = priv->rxq_map[rxq->queue_id].inq;
        priv->ppio_params.inqs_params.tcs_params[tc].inqs_params[inq].size =
                desc;

        ret = mrvl_fill_bpool(rxq, desc);
        if (ret) {
                rte_free(rxq);
                return ret;
        }

        priv->bpool_init_size += desc;

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

        return 0;
}

/**
 * DPDK callback to release the receive queue.
 *
 * @param rxq
 *   Generic receive queue pointer.
 */
static void
mrvl_rx_queue_release(void *rxq)
{
        struct mrvl_rxq *q = rxq;
        struct pp2_ppio_tc_params *tc_params;
        int i, num, tc, inq;
        struct pp2_hif *hif;
        unsigned int core_id = rte_lcore_id();

        if (core_id == LCORE_ID_ANY)
                core_id = rte_get_main_lcore();

        if (!q)
                return;

        hif = mrvl_get_hif(q->priv, core_id);

        if (!hif)
                return;

        tc = q->priv->rxq_map[q->queue_id].tc;
        inq = q->priv->rxq_map[q->queue_id].inq;
        tc_params = &q->priv->ppio_params.inqs_params.tcs_params[tc];
        num = tc_params->inqs_params[inq].size;
        for (i = 0; i < num; i++) {
                struct pp2_buff_inf inf;
                uint64_t addr;

                pp2_bpool_get_buff(hif, q->priv->bpool, &inf);
                addr = cookie_addr_high | inf.cookie;
                rte_pktmbuf_free((struct rte_mbuf *)addr);
        }

        rte_free(q);
}

/**
 * DPDK callback to configure the transmit queue.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param idx
 *   Transmit queue index.
 * @param desc
 *   Number of descriptors to configure in the queue.
 * @param socket
 *   NUMA socket on which memory must be allocated.
 * @param conf
 *   Tx queue configuration parameters.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
                    unsigned int socket,
                    const struct rte_eth_txconf *conf)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        struct mrvl_txq *txq;

        if (dev->data->tx_queues[idx]) {
                rte_free(dev->data->tx_queues[idx]);
                dev->data->tx_queues[idx] = NULL;
        }

        txq = rte_zmalloc_socket("txq", sizeof(*txq), 0, socket);
        if (!txq)
                return -ENOMEM;

        txq->priv = priv;
        txq->queue_id = idx;
        txq->port_id = dev->data->port_id;
        txq->tx_deferred_start = conf->tx_deferred_start;
        dev->data->tx_queues[idx] = txq;

        priv->ppio_params.outqs_params.outqs_params[idx].size = desc;

        return 0;
}

/**
 * DPDK callback to release the transmit queue.
 *
 * @param txq
 *   Generic transmit queue pointer.
 */
static void
mrvl_tx_queue_release(void *txq)
{
        struct mrvl_txq *q = txq;

        if (!q)
                return;

        rte_free(q);
}

/**
 * DPDK callback to get flow control configuration.
 *
 * @param dev
 *  Pointer to Ethernet device structure.
 * @param fc_conf
 *  Pointer to the flow control configuration.
 *
 * @return
 *  0 on success, negative error value otherwise.
 */
static int
mrvl_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        int ret, en;

        if (!priv)
                return -EPERM;

        ret = pp2_ppio_get_rx_pause(priv->ppio, &en);
        if (ret) {
                MRVL_LOG(ERR, "Failed to read rx pause state");
                return ret;
        }

        fc_conf->mode = en ? RTE_FC_RX_PAUSE : RTE_FC_NONE;

        return 0;
}

/**
 * DPDK callback to set flow control configuration.
 *
 * @param dev
 *  Pointer to Ethernet device structure.
 * @param fc_conf
 *  Pointer to the flow control configuration.
 *
 * @return
 *  0 on success, negative error value otherwise.
 */
static int
mrvl_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
{
        struct mrvl_priv *priv = dev->data->dev_private;

        if (!priv)
                return -EPERM;

        if (fc_conf->high_water ||
            fc_conf->low_water ||
            fc_conf->pause_time ||
            fc_conf->mac_ctrl_frame_fwd ||
            fc_conf->autoneg) {
                MRVL_LOG(ERR, "Flowctrl parameter is not supported");

                return -EINVAL;
        }

        if (fc_conf->mode == RTE_FC_NONE ||
            fc_conf->mode == RTE_FC_RX_PAUSE) {
                int ret, en;

                en = fc_conf->mode == RTE_FC_NONE ? 0 : 1;
                ret = pp2_ppio_set_rx_pause(priv->ppio, en);
                if (ret)
                        MRVL_LOG(ERR,
                                "Failed to change flowctrl on RX side");

                return ret;
        }

        return 0;
}

/**
 * Update RSS hash configuration
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @param rss_conf
 *   Pointer to RSS configuration.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_rss_hash_update(struct rte_eth_dev *dev,
                     struct rte_eth_rss_conf *rss_conf)
{
        struct mrvl_priv *priv = dev->data->dev_private;

        if (priv->isolated)
                return -ENOTSUP;

        return mrvl_configure_rss(priv, rss_conf);
}

/**
 * DPDK callback to get RSS hash configuration.
 *
 * @param dev
 *   Pointer to Ethernet device structure.
 * @rss_conf
 *   Pointer to RSS configuration.
 *
 * @return
 *   Always 0.
 */
static int
mrvl_rss_hash_conf_get(struct rte_eth_dev *dev,
                       struct rte_eth_rss_conf *rss_conf)
{
        struct mrvl_priv *priv = dev->data->dev_private;
        enum pp2_ppio_hash_type hash_type =
                priv->ppio_params.inqs_params.hash_type;

        rss_conf->rss_key = NULL;

        if (hash_type == PP2_PPIO_HASH_T_NONE)
                rss_conf->rss_hf = 0;
        else if (hash_type == PP2_PPIO_HASH_T_2_TUPLE)
                rss_conf->rss_hf = ETH_RSS_IPV4;
        else if (hash_type == PP2_PPIO_HASH_T_5_TUPLE && priv->rss_hf_tcp)
                rss_conf->rss_hf = ETH_RSS_NONFRAG_IPV4_TCP;
        else if (hash_type == PP2_PPIO_HASH_T_5_TUPLE && !priv->rss_hf_tcp)
                rss_conf->rss_hf = ETH_RSS_NONFRAG_IPV4_UDP;

        return 0;
}

/**
 * DPDK callback to get rte_flow callbacks.
 *
 * @param dev
 *   Pointer to the device structure.

 * @param filer_type
 *   Flow filter type.
 * @param filter_op
 *   Flow filter operation.
 * @param arg
 *   Pointer to pass the flow ops.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_eth_filter_ctrl(struct rte_eth_dev *dev __rte_unused,
                     enum rte_filter_type filter_type,
                     enum rte_filter_op filter_op, void *arg)
{
        switch (filter_type) {
        case RTE_ETH_FILTER_GENERIC:
                if (filter_op != RTE_ETH_FILTER_GET)
                        return -EINVAL;
                *(const void **)arg = &mrvl_flow_ops;
                return 0;
        default:
                MRVL_LOG(WARNING, "Filter type (%d) not supported",
                                filter_type);
                return -EINVAL;
        }
}

/**
 * DPDK callback to get rte_mtr callbacks.
 *
 * @param dev
 *   Pointer to the device structure.
 * @param ops
 *   Pointer to pass the mtr ops.
 *
 * @return
 *   Always 0.
 */
static int
mrvl_mtr_ops_get(struct rte_eth_dev *dev __rte_unused, void *ops)
{
        *(const void **)ops = &mrvl_mtr_ops;

        return 0;
}

/**
 * DPDK callback to get rte_tm callbacks.
 *
 * @param dev
 *   Pointer to the device structure.
 * @param ops
 *   Pointer to pass the tm ops.
 *
 * @return
 *   Always 0.
 */
static int
mrvl_tm_ops_get(struct rte_eth_dev *dev __rte_unused, void *ops)
{
        *(const void **)ops = &mrvl_tm_ops;

        return 0;
}

static const struct eth_dev_ops mrvl_ops = {
        .dev_configure = mrvl_dev_configure,
        .dev_start = mrvl_dev_start,
        .dev_stop = mrvl_dev_stop,
        .dev_set_link_up = mrvl_dev_set_link_up,
        .dev_set_link_down = mrvl_dev_set_link_down,
        .dev_close = mrvl_dev_close,
        .link_update = mrvl_link_update,
        .promiscuous_enable = mrvl_promiscuous_enable,
        .allmulticast_enable = mrvl_allmulticast_enable,
        .promiscuous_disable = mrvl_promiscuous_disable,
        .allmulticast_disable = mrvl_allmulticast_disable,
        .mac_addr_remove = mrvl_mac_addr_remove,
        .mac_addr_add = mrvl_mac_addr_add,
        .mac_addr_set = mrvl_mac_addr_set,
        .mtu_set = mrvl_mtu_set,
        .stats_get = mrvl_stats_get,
        .stats_reset = mrvl_stats_reset,
        .xstats_get = mrvl_xstats_get,
        .xstats_reset = mrvl_xstats_reset,
        .xstats_get_names = mrvl_xstats_get_names,
        .dev_infos_get = mrvl_dev_infos_get,
        .dev_supported_ptypes_get = mrvl_dev_supported_ptypes_get,
        .rxq_info_get = mrvl_rxq_info_get,
        .txq_info_get = mrvl_txq_info_get,
        .vlan_filter_set = mrvl_vlan_filter_set,
        .tx_queue_start = mrvl_tx_queue_start,
        .tx_queue_stop = mrvl_tx_queue_stop,
        .rx_queue_setup = mrvl_rx_queue_setup,
        .rx_queue_release = mrvl_rx_queue_release,
        .tx_queue_setup = mrvl_tx_queue_setup,
        .tx_queue_release = mrvl_tx_queue_release,
        .flow_ctrl_get = mrvl_flow_ctrl_get,
        .flow_ctrl_set = mrvl_flow_ctrl_set,
        .rss_hash_update = mrvl_rss_hash_update,
        .rss_hash_conf_get = mrvl_rss_hash_conf_get,
        .filter_ctrl = mrvl_eth_filter_ctrl,
        .mtr_ops_get = mrvl_mtr_ops_get,
        .tm_ops_get = mrvl_tm_ops_get,
};

/**
 * Return packet type information and l3/l4 offsets.
 *
 * @param desc
 *   Pointer to the received packet descriptor.
 * @param l3_offset
 *   l3 packet offset.
 * @param l4_offset
 *   l4 packet offset.
 *
 * @return
 *   Packet type information.
 */
static inline uint64_t
mrvl_desc_to_packet_type_and_offset(struct pp2_ppio_desc *desc,
                                    uint8_t *l3_offset, uint8_t *l4_offset)
{
        enum pp2_inq_l3_type l3_type;
        enum pp2_inq_l4_type l4_type;
        enum pp2_inq_vlan_tag vlan_tag;
        uint64_t packet_type;

        pp2_ppio_inq_desc_get_l3_info(desc, &l3_type, l3_offset);
        pp2_ppio_inq_desc_get_l4_info(desc, &l4_type, l4_offset);
        pp2_ppio_inq_desc_get_vlan_tag(desc, &vlan_tag);

        packet_type = RTE_PTYPE_L2_ETHER;

        switch (vlan_tag) {
        case PP2_INQ_VLAN_TAG_SINGLE:
                packet_type |= RTE_PTYPE_L2_ETHER_VLAN;
                break;
        case PP2_INQ_VLAN_TAG_DOUBLE:
        case PP2_INQ_VLAN_TAG_TRIPLE:
                packet_type |= RTE_PTYPE_L2_ETHER_QINQ;
                break;
        default:
                break;
        }

        switch (l3_type) {
        case PP2_INQ_L3_TYPE_IPV4_NO_OPTS:
                packet_type |= RTE_PTYPE_L3_IPV4;
                break;
        case PP2_INQ_L3_TYPE_IPV4_OK:
                packet_type |= RTE_PTYPE_L3_IPV4_EXT;
                break;
        case PP2_INQ_L3_TYPE_IPV4_TTL_ZERO:
                packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
                break;
        case PP2_INQ_L3_TYPE_IPV6_NO_EXT:
                packet_type |= RTE_PTYPE_L3_IPV6;
                break;
        case PP2_INQ_L3_TYPE_IPV6_EXT:
                packet_type |= RTE_PTYPE_L3_IPV6_EXT;
                break;
        case PP2_INQ_L3_TYPE_ARP:
                packet_type |= RTE_PTYPE_L2_ETHER_ARP;
                /*
                 * In case of ARP l4_offset is set to wrong value.
                 * Set it to proper one so that later on mbuf->l3_len can be
                 * calculated subtracting l4_offset and l3_offset.
                 */
                *l4_offset = *l3_offset + MRVL_ARP_LENGTH;
                break;
        default:
                MRVL_LOG(DEBUG, "Failed to recognise l3 packet type");
                break;
        }

        switch (l4_type) {
        case PP2_INQ_L4_TYPE_TCP:
                packet_type |= RTE_PTYPE_L4_TCP;
                break;
        case PP2_INQ_L4_TYPE_UDP:
                packet_type |= RTE_PTYPE_L4_UDP;
                break;
        default:
                MRVL_LOG(DEBUG, "Failed to recognise l4 packet type");
                break;
        }

        return packet_type;
}

/**
 * Get offload information from the received packet descriptor.
 *
 * @param desc
 *   Pointer to the received packet descriptor.
 *
 * @return
 *   Mbuf offload flags.
 */
static inline uint64_t
mrvl_desc_to_ol_flags(struct pp2_ppio_desc *desc)
{
        uint64_t flags;
        enum pp2_inq_desc_status status;

        status = pp2_ppio_inq_desc_get_l3_pkt_error(desc);
        if (unlikely(status != PP2_DESC_ERR_OK))
                flags = PKT_RX_IP_CKSUM_BAD;
        else
                flags = PKT_RX_IP_CKSUM_GOOD;

        status = pp2_ppio_inq_desc_get_l4_pkt_error(desc);
        if (unlikely(status != PP2_DESC_ERR_OK))
                flags |= PKT_RX_L4_CKSUM_BAD;
        else
                flags |= PKT_RX_L4_CKSUM_GOOD;

        return flags;
}

/**
 * DPDK callback for receive.
 *
 * @param rxq
 *   Generic pointer to the receive queue.
 * @param rx_pkts
 *   Array to store received packets.
 * @param nb_pkts
 *   Maximum number of packets in array.
 *
 * @return
 *   Number of packets successfully received.
 */
static uint16_t
mrvl_rx_pkt_burst(void *rxq, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
{
        struct mrvl_rxq *q = rxq;
        struct pp2_ppio_desc descs[nb_pkts];
        struct pp2_bpool *bpool;
        int i, ret, rx_done = 0;
        int num;
        struct pp2_hif *hif;
        unsigned int core_id = rte_lcore_id();

        hif = mrvl_get_hif(q->priv, core_id);

        if (unlikely(!q->priv->ppio || !hif))
                return 0;

        bpool = q->priv->bpool;

        ret = pp2_ppio_recv(q->priv->ppio, q->priv->rxq_map[q->queue_id].tc,
                            q->priv->rxq_map[q->queue_id].inq, descs, &nb_pkts);
        if (unlikely(ret < 0)) {
                MRVL_LOG(ERR, "Failed to receive packets");
                return 0;
        }
        mrvl_port_bpool_size[bpool->pp2_id][bpool->id][core_id] -= nb_pkts;

        for (i = 0; i < nb_pkts; i++) {
                struct rte_mbuf *mbuf;
                uint8_t l3_offset, l4_offset;
                enum pp2_inq_desc_status status;
                uint64_t addr;

                if (likely(nb_pkts - i > MRVL_MUSDK_PREFETCH_SHIFT)) {
                        struct pp2_ppio_desc *pref_desc;
                        u64 pref_addr;

                        pref_desc = &descs[i + MRVL_MUSDK_PREFETCH_SHIFT];
                        pref_addr = cookie_addr_high |
                                    pp2_ppio_inq_desc_get_cookie(pref_desc);
                        rte_mbuf_prefetch_part1((struct rte_mbuf *)(pref_addr));
                        rte_mbuf_prefetch_part2((struct rte_mbuf *)(pref_addr));
                }

                addr = cookie_addr_high |
                       pp2_ppio_inq_desc_get_cookie(&descs[i]);
                mbuf = (struct rte_mbuf *)addr;
                rte_pktmbuf_reset(mbuf);

                /* drop packet in case of mac, overrun or resource error */
                status = pp2_ppio_inq_desc_get_l2_pkt_error(&descs[i]);
                if (unlikely(status != PP2_DESC_ERR_OK)) {
                        struct pp2_buff_inf binf = {
                                .addr = rte_mbuf_data_iova_default(mbuf),
                                .cookie = (uint64_t)mbuf,
                        };

                        pp2_bpool_put_buff(hif, bpool, &binf);
                        mrvl_port_bpool_size
                                [bpool->pp2_id][bpool->id][core_id]++;
                        q->drop_mac++;
                        continue;
                }

                mbuf->data_off += MRVL_PKT_EFFEC_OFFS;
                mbuf->pkt_len = pp2_ppio_inq_desc_get_pkt_len(&descs[i]);
                mbuf->data_len = mbuf->pkt_len;
                mbuf->port = q->port_id;
                mbuf->packet_type =
                        mrvl_desc_to_packet_type_and_offset(&descs[i],
                                                            &l3_offset,
                                                            &l4_offset);
                mbuf->l2_len = l3_offset;
                mbuf->l3_len = l4_offset - l3_offset;

                if (likely(q->cksum_enabled))
                        mbuf->ol_flags = mrvl_desc_to_ol_flags(&descs[i]);

                rx_pkts[rx_done++] = mbuf;
                q->bytes_recv += mbuf->pkt_len;
        }

        if (rte_spinlock_trylock(&q->priv->lock) == 1) {
                num = mrvl_get_bpool_size(bpool->pp2_id, bpool->id);

                if (unlikely(num <= q->priv->bpool_min_size ||
                             (!rx_done && num < q->priv->bpool_init_size))) {
                        ret = mrvl_fill_bpool(q, MRVL_BURST_SIZE);
                        if (ret)
                                MRVL_LOG(ERR, "Failed to fill bpool");
                } else if (unlikely(num > q->priv->bpool_max_size)) {
                        int i;
                        int pkt_to_remove = num - q->priv->bpool_init_size;
                        struct rte_mbuf *mbuf;
                        struct pp2_buff_inf buff;

                        MRVL_LOG(DEBUG,
                                "port-%d:%d: bpool %d oversize - remove %d buffers (pool size: %d -> %d)",
                                bpool->pp2_id, q->priv->ppio->port_id,
                                bpool->id, pkt_to_remove, num,
                                q->priv->bpool_init_size);

                        for (i = 0; i < pkt_to_remove; i++) {
                                ret = pp2_bpool_get_buff(hif, bpool, &buff);
                                if (ret)
                                        break;
                                mbuf = (struct rte_mbuf *)
                                        (cookie_addr_high | buff.cookie);
                                rte_pktmbuf_free(mbuf);
                        }
                        mrvl_port_bpool_size
                                [bpool->pp2_id][bpool->id][core_id] -= i;
                }
                rte_spinlock_unlock(&q->priv->lock);
        }

        return rx_done;
}

/**
 * Prepare offload information.
 *
 * @param ol_flags
 *   Offload flags.
 * @param packet_type
 *   Packet type bitfield.
 * @param l3_type
 *   Pointer to the pp2_ouq_l3_type structure.
 * @param l4_type
 *   Pointer to the pp2_outq_l4_type structure.
 * @param gen_l3_cksum
 *   Will be set to 1 in case l3 checksum is computed.
 * @param l4_cksum
 *   Will be set to 1 in case l4 checksum is computed.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static inline int
mrvl_prepare_proto_info(uint64_t ol_flags, uint32_t packet_type,
                        enum pp2_outq_l3_type *l3_type,
                        enum pp2_outq_l4_type *l4_type,
                        int *gen_l3_cksum,
                        int *gen_l4_cksum)
{
        /*
         * Based on ol_flags prepare information
         * for pp2_ppio_outq_desc_set_proto_info() which setups descriptor
         * for offloading.
         */
        if (ol_flags & PKT_TX_IPV4) {
                *l3_type = PP2_OUTQ_L3_TYPE_IPV4;
                *gen_l3_cksum = ol_flags & PKT_TX_IP_CKSUM ? 1 : 0;
        } else if (ol_flags & PKT_TX_IPV6) {
                *l3_type = PP2_OUTQ_L3_TYPE_IPV6;
                /* no checksum for ipv6 header */
                *gen_l3_cksum = 0;
        } else {
                /* if something different then stop processing */
                return -1;
        }

        ol_flags &= PKT_TX_L4_MASK;
        if ((packet_type & RTE_PTYPE_L4_TCP) &&
            ol_flags == PKT_TX_TCP_CKSUM) {
                *l4_type = PP2_OUTQ_L4_TYPE_TCP;
                *gen_l4_cksum = 1;
        } else if ((packet_type & RTE_PTYPE_L4_UDP) &&
                   ol_flags == PKT_TX_UDP_CKSUM) {
                *l4_type = PP2_OUTQ_L4_TYPE_UDP;
                *gen_l4_cksum = 1;
        } else {
                *l4_type = PP2_OUTQ_L4_TYPE_OTHER;
                /* no checksum for other type */
                *gen_l4_cksum = 0;
        }

        return 0;
}

/**
 * Release already sent buffers to bpool (buffer-pool).
 *
 * @param ppio
 *   Pointer to the port structure.
 * @param hif
 *   Pointer to the MUSDK hardware interface.
 * @param sq
 *   Pointer to the shadow queue.
 * @param qid
 *   Queue id number.
 * @param force
 *   Force releasing packets.
 */
static inline void
mrvl_free_sent_buffers(struct pp2_ppio *ppio, struct pp2_hif *hif,
                       unsigned int core_id, struct mrvl_shadow_txq *sq,
                       int qid, int force)
{
        struct buff_release_entry *entry;
        uint16_t nb_done = 0, num = 0, skip_bufs = 0;
        int i;

        pp2_ppio_get_num_outq_done(ppio, hif, qid, &nb_done);

        sq->num_to_release += nb_done;

        if (likely(!force &&
                   sq->num_to_release < MRVL_PP2_BUF_RELEASE_BURST_SIZE))
                return;

        nb_done = sq->num_to_release;
        sq->num_to_release = 0;

        for (i = 0; i < nb_done; i++) {
                entry = &sq->ent[sq->tail + num];
                if (unlikely(!entry->buff.addr)) {
                        MRVL_LOG(ERR,
                                "Shadow memory @%d: cookie(%lx), pa(%lx)!",
                                sq->tail, (u64)entry->buff.cookie,
                                (u64)entry->buff.addr);
                        skip_bufs = 1;
                        goto skip;
                }

                if (unlikely(!entry->bpool)) {
                        struct rte_mbuf *mbuf;

                        mbuf = (struct rte_mbuf *)
                               (cookie_addr_high | entry->buff.cookie);
                        rte_pktmbuf_free(mbuf);
                        skip_bufs = 1;
                        goto skip;
                }

                mrvl_port_bpool_size
                        [entry->bpool->pp2_id][entry->bpool->id][core_id]++;
                num++;
                if (unlikely(sq->tail + num == MRVL_PP2_TX_SHADOWQ_SIZE))
                        goto skip;
                continue;
skip:
                if (likely(num))
                        pp2_bpool_put_buffs(hif, &sq->ent[sq->tail], &num);
                num += skip_bufs;
                sq->tail = (sq->tail + num) & MRVL_PP2_TX_SHADOWQ_MASK;
                sq->size -= num;
                num = 0;
                skip_bufs = 0;
        }

        if (likely(num)) {
                pp2_bpool_put_buffs(hif, &sq->ent[sq->tail], &num);
                sq->tail = (sq->tail + num) & MRVL_PP2_TX_SHADOWQ_MASK;
                sq->size -= num;
        }
}

/**
 * DPDK callback for transmit.
 *
 * @param txq
 *   Generic pointer transmit queue.
 * @param tx_pkts
 *   Packets to transmit.
 * @param nb_pkts
 *   Number of packets in array.
 *
 * @return
 *   Number of packets successfully transmitted.
 */
static uint16_t
mrvl_tx_pkt_burst(void *txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
{
        struct mrvl_txq *q = txq;
        struct mrvl_shadow_txq *sq;
        struct pp2_hif *hif;
        struct pp2_ppio_desc descs[nb_pkts];
        unsigned int core_id = rte_lcore_id();
        int i, ret, bytes_sent = 0;
        uint16_t num, sq_free_size;
        uint64_t addr;

        hif = mrvl_get_hif(q->priv, core_id);
        sq = &q->shadow_txqs[core_id];

        if (unlikely(!q->priv->ppio || !hif))
                return 0;

        if (sq->size)
                mrvl_free_sent_buffers(q->priv->ppio, hif, core_id,
                                       sq, q->queue_id, 0);

        sq_free_size = MRVL_PP2_TX_SHADOWQ_SIZE - sq->size - 1;
        if (unlikely(nb_pkts > sq_free_size)) {
                MRVL_LOG(DEBUG,
                        "No room in shadow queue for %d packets! %d packets will be sent.",
                        nb_pkts, sq_free_size);
                nb_pkts = sq_free_size;
        }

        for (i = 0; i < nb_pkts; i++) {
                struct rte_mbuf *mbuf = tx_pkts[i];
                int gen_l3_cksum, gen_l4_cksum;
                enum pp2_outq_l3_type l3_type;
                enum pp2_outq_l4_type l4_type;

                if (likely(nb_pkts - i > MRVL_MUSDK_PREFETCH_SHIFT)) {
                        struct rte_mbuf *pref_pkt_hdr;

                        pref_pkt_hdr = tx_pkts[i + MRVL_MUSDK_PREFETCH_SHIFT];
                        rte_mbuf_prefetch_part1(pref_pkt_hdr);
                        rte_mbuf_prefetch_part2(pref_pkt_hdr);
                }

                mrvl_fill_shadowq(sq, mbuf);
                mrvl_fill_desc(&descs[i], mbuf);

                bytes_sent += rte_pktmbuf_pkt_len(mbuf);
                /*
                 * in case unsupported ol_flags were passed
                 * do not update descriptor offload information
                 */
                ret = mrvl_prepare_proto_info(mbuf->ol_flags, mbuf->packet_type,
                                              &l3_type, &l4_type, &gen_l3_cksum,
                                              &gen_l4_cksum);
                if (unlikely(ret))
                        continue;

                pp2_ppio_outq_desc_set_proto_info(&descs[i], l3_type, l4_type,
                                                  mbuf->l2_len,
                                                  mbuf->l2_len + mbuf->l3_len,
                                                  gen_l3_cksum, gen_l4_cksum);
        }

        num = nb_pkts;
        pp2_ppio_send(q->priv->ppio, hif, q->queue_id, descs, &nb_pkts);
        /* number of packets that were not sent */
        if (unlikely(num > nb_pkts)) {
                for (i = nb_pkts; i < num; i++) {
                        sq->head = (MRVL_PP2_TX_SHADOWQ_SIZE + sq->head - 1) &
                                MRVL_PP2_TX_SHADOWQ_MASK;
                        addr = cookie_addr_high | sq->ent[sq->head].buff.cookie;
                        bytes_sent -=
                                rte_pktmbuf_pkt_len((struct rte_mbuf *)addr);
                }
                sq->size -= num - nb_pkts;
        }

        q->bytes_sent += bytes_sent;

        return nb_pkts;
}

/** DPDK callback for S/G transmit.
 *
 * @param txq
 *   Generic pointer transmit queue.
 * @param tx_pkts
 *   Packets to transmit.
 * @param nb_pkts
 *   Number of packets in array.
 *
 * @return
 *   Number of packets successfully transmitted.
 */
static uint16_t
mrvl_tx_sg_pkt_burst(void *txq, struct rte_mbuf **tx_pkts,
                     uint16_t nb_pkts)
{
        struct mrvl_txq *q = txq;
        struct mrvl_shadow_txq *sq;
        struct pp2_hif *hif;
        struct pp2_ppio_desc descs[nb_pkts * PP2_PPIO_DESC_NUM_FRAGS];
        struct pp2_ppio_sg_pkts pkts;
        uint8_t frags[nb_pkts];
        unsigned int core_id = rte_lcore_id();
        int i, j, ret, bytes_sent = 0;
        int tail, tail_first;
        uint16_t num, sq_free_size;
        uint16_t nb_segs, total_descs = 0;
        uint64_t addr;

        hif = mrvl_get_hif(q->priv, core_id);
        sq = &q->shadow_txqs[core_id];
        pkts.frags = frags;
        pkts.num = 0;

        if (unlikely(!q->priv->ppio || !hif))
                return 0;

        if (sq->size)
                mrvl_free_sent_buffers(q->priv->ppio, hif, core_id,
                                       sq, q->queue_id, 0);

        /* Save shadow queue free size */
        sq_free_size = MRVL_PP2_TX_SHADOWQ_SIZE - sq->size - 1;

        tail = 0;
        for (i = 0; i < nb_pkts; i++) {
                struct rte_mbuf *mbuf = tx_pkts[i];
                struct rte_mbuf *seg = NULL;
                int gen_l3_cksum, gen_l4_cksum;
                enum pp2_outq_l3_type l3_type;
                enum pp2_outq_l4_type l4_type;

                nb_segs = mbuf->nb_segs;
                tail_first = tail;
                total_descs += nb_segs;

                /*
                 * Check if total_descs does not exceed
                 * shadow queue free size
                 */
                if (unlikely(total_descs > sq_free_size)) {
                        total_descs -= nb_segs;
                        RTE_LOG(DEBUG, PMD,
                                "No room in shadow queue for %d packets! "
                                "%d packets will be sent.\n",
                                nb_pkts, i);
                        break;
                }

                /* Check if nb_segs does not exceed the max nb of desc per
                 * fragmented packet
                 */
                if (nb_segs > PP2_PPIO_DESC_NUM_FRAGS) {
                        total_descs -= nb_segs;
                        RTE_LOG(ERR, PMD,
                                "Too many segments. Packet won't be sent.\n");
                        break;
                }

                if (likely(nb_pkts - i > MRVL_MUSDK_PREFETCH_SHIFT)) {
                        struct rte_mbuf *pref_pkt_hdr;

                        pref_pkt_hdr = tx_pkts[i + MRVL_MUSDK_PREFETCH_SHIFT];
                        rte_mbuf_prefetch_part1(pref_pkt_hdr);
                        rte_mbuf_prefetch_part2(pref_pkt_hdr);
                }

                pkts.frags[pkts.num] = nb_segs;
                pkts.num++;

                seg = mbuf;
                for (j = 0; j < nb_segs - 1; j++) {
                        /* For the subsequent segments, set shadow queue
                         * buffer to NULL
                         */
                        mrvl_fill_shadowq(sq, NULL);
                        mrvl_fill_desc(&descs[tail], seg);

                        tail++;
                        seg = seg->next;
                }
                /* Put first mbuf info in last shadow queue entry */
                mrvl_fill_shadowq(sq, mbuf);
                /* Update descriptor with last segment */
                mrvl_fill_desc(&descs[tail++], seg);

                bytes_sent += rte_pktmbuf_pkt_len(mbuf);
                /* In case unsupported ol_flags were passed
                 * do not update descriptor offload information
                 */
                ret = mrvl_prepare_proto_info(mbuf->ol_flags, mbuf->packet_type,
                                              &l3_type, &l4_type, &gen_l3_cksum,
                                              &gen_l4_cksum);
                if (unlikely(ret))
                        continue;

                pp2_ppio_outq_desc_set_proto_info(&descs[tail_first], l3_type,
                                                  l4_type, mbuf->l2_len,
                                                  mbuf->l2_len + mbuf->l3_len,
                                                  gen_l3_cksum, gen_l4_cksum);
        }

        num = total_descs;
        pp2_ppio_send_sg(q->priv->ppio, hif, q->queue_id, descs,
                         &total_descs, &pkts);
        /* number of packets that were not sent */
        if (unlikely(num > total_descs)) {
                for (i = total_descs; i < num; i++) {
                        sq->head = (MRVL_PP2_TX_SHADOWQ_SIZE + sq->head - 1) &
                                MRVL_PP2_TX_SHADOWQ_MASK;

                        addr = sq->ent[sq->head].buff.cookie;
                        if (addr)
                                bytes_sent -=
                                        rte_pktmbuf_pkt_len((struct rte_mbuf *)
                                                (cookie_addr_high | addr));
                }
                sq->size -= num - total_descs;
                nb_pkts = pkts.num;
        }

        q->bytes_sent += bytes_sent;

        return nb_pkts;
}

/**
 * Initialize packet processor.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_init_pp2(void)
{
        struct pp2_init_params init_params;

        memset(&init_params, 0, sizeof(init_params));
        init_params.hif_reserved_map = MRVL_MUSDK_HIFS_RESERVED;
        init_params.bm_pool_reserved_map = MRVL_MUSDK_BPOOLS_RESERVED;
        init_params.rss_tbl_reserved_map = MRVL_MUSDK_RSS_RESERVED;

        return pp2_init(&init_params);
}

/**
 * Deinitialize packet processor.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static void
mrvl_deinit_pp2(void)
{
        pp2_deinit();
}

/**
 * Create private device structure.
 *
 * @param dev_name
 *   Pointer to the port name passed in the initialization parameters.
 *
 * @return
 *   Pointer to the newly allocated private device structure.
 */
static struct mrvl_priv *
mrvl_priv_create(const char *dev_name)
{
        struct pp2_bpool_params bpool_params;
        char match[MRVL_MATCH_LEN];
        struct mrvl_priv *priv;
        int ret, bpool_bit;

        priv = rte_zmalloc_socket(dev_name, sizeof(*priv), 0, rte_socket_id());
        if (!priv)
                return NULL;

        ret = pp2_netdev_get_ppio_info((char *)(uintptr_t)dev_name,
                                       &priv->pp_id, &priv->ppio_id);
        if (ret)
                goto out_free_priv;

        bpool_bit = mrvl_reserve_bit(&used_bpools[priv->pp_id],
                                     PP2_BPOOL_NUM_POOLS);
        if (bpool_bit < 0)
                goto out_free_priv;
        priv->bpool_bit = bpool_bit;

        snprintf(match, sizeof(match), "pool-%d:%d", priv->pp_id,
                 priv->bpool_bit);
        memset(&bpool_params, 0, sizeof(bpool_params));
        bpool_params.match = match;
        bpool_params.buff_len = MRVL_PKT_SIZE_MAX + MRVL_PKT_EFFEC_OFFS;
        ret = pp2_bpool_init(&bpool_params, &priv->bpool);
        if (ret)
                goto out_clear_bpool_bit;

        priv->ppio_params.type = PP2_PPIO_T_NIC;
        rte_spinlock_init(&priv->lock);

        return priv;
out_clear_bpool_bit:
        used_bpools[priv->pp_id] &= ~(1 << priv->bpool_bit);
out_free_priv:
        rte_free(priv);
        return NULL;
}

/**
 * Create device representing Ethernet port.
 *
 * @param name
 *   Pointer to the port's name.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
mrvl_eth_dev_create(struct rte_vdev_device *vdev, const char *name)
{
        int ret, fd = socket(AF_INET, SOCK_DGRAM, 0);
        struct rte_eth_dev *eth_dev;
        struct mrvl_priv *priv;
        struct ifreq req;

        eth_dev = rte_eth_dev_allocate(name);
        if (!eth_dev)
                return -ENOMEM;

        priv = mrvl_priv_create(name);
        if (!priv) {
                ret = -ENOMEM;
                goto out_free;
        }
        eth_dev->data->dev_private = priv;

        eth_dev->data->mac_addrs =
                rte_zmalloc("mac_addrs",
                            RTE_ETHER_ADDR_LEN * MRVL_MAC_ADDRS_MAX, 0);
        if (!eth_dev->data->mac_addrs) {
                MRVL_LOG(ERR, "Failed to allocate space for eth addrs");
                ret = -ENOMEM;
                goto out_free;
        }

        memset(&req, 0, sizeof(req));
        strcpy(req.ifr_name, name);
        ret = ioctl(fd, SIOCGIFHWADDR, &req);
        if (ret)
                goto out_free;

        memcpy(eth_dev->data->mac_addrs[0].addr_bytes,
               req.ifr_addr.sa_data, RTE_ETHER_ADDR_LEN);

        eth_dev->device = &vdev->device;
        eth_dev->rx_pkt_burst = mrvl_rx_pkt_burst;
        mrvl_set_tx_function(eth_dev);
        eth_dev->dev_ops = &mrvl_ops;
        eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;

        rte_eth_dev_probing_finish(eth_dev);
        return 0;
out_free:
        rte_eth_dev_release_port(eth_dev);

        return ret;
}

/**
 * Callback used by rte_kvargs_process() during argument parsing.
 *
 * @param key
 *   Pointer to the parsed key (unused).
 * @param value
 *   Pointer to the parsed value.
 * @param extra_args
 *   Pointer to the extra arguments which contains address of the
 *   table of pointers to parsed interface names.
 *
 * @return
 *   Always 0.
 */
static int
mrvl_get_ifnames(const char *key __rte_unused, const char *value,
                 void *extra_args)
{
        struct mrvl_ifnames *ifnames = extra_args;

        ifnames->names[ifnames->idx++] = value;

        return 0;
}

/**
 * Deinitialize per-lcore MUSDK hardware interfaces (hifs).
 */
static void
mrvl_deinit_hifs(void)
{
        int i;

        for (i = mrvl_lcore_first; i <= mrvl_lcore_last; i++) {
                if (hifs[i])
                        pp2_hif_deinit(hifs[i]);
        }
        used_hifs = MRVL_MUSDK_HIFS_RESERVED;
        memset(hifs, 0, sizeof(hifs));
}

/**
 * DPDK callback to register the virtual device.
 *
 * @param vdev
 *   Pointer to the virtual device.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
rte_pmd_mrvl_probe(struct rte_vdev_device *vdev)
{
        struct rte_kvargs *kvlist;
        struct mrvl_ifnames ifnames;
        int ret = -EINVAL;
        uint32_t i, ifnum, cfgnum;
        const char *params;

        params = rte_vdev_device_args(vdev);
        if (!params)
                return -EINVAL;

        kvlist = rte_kvargs_parse(params, valid_args);
        if (!kvlist)
                return -EINVAL;

        ifnum = rte_kvargs_count(kvlist, MRVL_IFACE_NAME_ARG);
        if (ifnum > RTE_DIM(ifnames.names))
                goto out_free_kvlist;

        ifnames.idx = 0;
        rte_kvargs_process(kvlist, MRVL_IFACE_NAME_ARG,
                           mrvl_get_ifnames, &ifnames);


        /*
         * The below system initialization should be done only once,
         * on the first provided configuration file
         */
        if (!mrvl_qos_cfg) {
                cfgnum = rte_kvargs_count(kvlist, MRVL_CFG_ARG);
                MRVL_LOG(INFO, "Parsing config file!");
                if (cfgnum > 1) {
                        MRVL_LOG(ERR, "Cannot handle more than one config file!");
                        goto out_free_kvlist;
                } else if (cfgnum == 1) {
                        rte_kvargs_process(kvlist, MRVL_CFG_ARG,
                                           mrvl_get_qoscfg, &mrvl_qos_cfg);
                }
        }

        if (mrvl_dev_num)
                goto init_devices;

        MRVL_LOG(INFO, "Perform MUSDK initializations");

        ret = rte_mvep_init(MVEP_MOD_T_PP2, kvlist);
        if (ret)
                goto out_free_kvlist;

        ret = mrvl_init_pp2();
        if (ret) {
                MRVL_LOG(ERR, "Failed to init PP!");
                rte_mvep_deinit(MVEP_MOD_T_PP2);
                goto out_free_kvlist;
        }

        memset(mrvl_port_bpool_size, 0, sizeof(mrvl_port_bpool_size));
        memset(mrvl_port_to_bpool_lookup, 0, sizeof(mrvl_port_to_bpool_lookup));

        mrvl_lcore_first = RTE_MAX_LCORE;
        mrvl_lcore_last = 0;

init_devices:
        for (i = 0; i < ifnum; i++) {
                MRVL_LOG(INFO, "Creating %s", ifnames.names[i]);
                ret = mrvl_eth_dev_create(vdev, ifnames.names[i]);
                if (ret)
                        goto out_cleanup;
                mrvl_dev_num++;
        }

        rte_kvargs_free(kvlist);

        return 0;
out_cleanup:
        rte_pmd_mrvl_remove(vdev);

out_free_kvlist:
        rte_kvargs_free(kvlist);

        return ret;
}

/**
 * DPDK callback to remove virtual device.
 *
 * @param vdev
 *   Pointer to the removed virtual device.
 *
 * @return
 *   0 on success, negative error value otherwise.
 */
static int
rte_pmd_mrvl_remove(struct rte_vdev_device *vdev)
{
        uint16_t port_id;
        int ret = 0;

        RTE_ETH_FOREACH_DEV(port_id) {
                if (rte_eth_devices[port_id].device != &vdev->device)
                        continue;
                ret |= rte_eth_dev_close(port_id);
        }

        return ret == 0 ? 0 : -EIO;
}

static struct rte_vdev_driver pmd_mrvl_drv = {
        .probe = rte_pmd_mrvl_probe,
        .remove = rte_pmd_mrvl_remove,
};

RTE_PMD_REGISTER_VDEV(net_mvpp2, pmd_mrvl_drv);
RTE_PMD_REGISTER_ALIAS(net_mvpp2, eth_mvpp2);
RTE_LOG_REGISTER(mrvl_logtype, pmd.net.mvpp2, NOTICE);