[dpdk-dev] [PATCH v2 2/7] net/nfp: move rxtx functions to their own file

[Heinrich Kuhn <heinrich.kuhn@netronome.com>]

Create a new rxtx file and move the Rx/Tx functions to this file. This
commit will also move the needed shared functions to the nfp_net_pmd.h
file as needed.

Signed-off-by: Heinrich Kuhn <heinrich.kuhn@netronome.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
---
 drivers/net/nfp/meson.build   |    1 +
 drivers/net/nfp/nfp_net.c     | 1090 ---------------------------------
 drivers/net/nfp/nfp_net_pmd.h |  184 ++++--
 drivers/net/nfp/nfp_rxtx.c    | 1002 ++++++++++++++++++++++++++++++
 drivers/net/nfp/nfp_rxtx.h    |   27 +
 5 files changed, 1173 insertions(+), 1131 deletions(-)
 create mode 100644 drivers/net/nfp/nfp_rxtx.c

diff --git a/drivers/net/nfp/meson.build b/drivers/net/nfp/meson.build
index b51e2e5f20..1b289e2354 100644
--- a/drivers/net/nfp/meson.build
+++ b/drivers/net/nfp/meson.build
@@ -19,4 +19,5 @@ sources = files(
         'nfpcore/nfp_nsp_eth.c',
         'nfpcore/nfp_hwinfo.c',
         'nfp_net.c',
+        'nfp_rxtx.c',
 )
diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 67288abeff..5bfc23ba04 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -66,29 +66,11 @@ static int nfp_init_phyports(struct nfp_pf_dev *pf_dev);
 static int nfp_net_link_update(struct rte_eth_dev *dev, int wait_to_complete);
 static int nfp_net_promisc_enable(struct rte_eth_dev *dev);
 static int nfp_net_promisc_disable(struct rte_eth_dev *dev);
-static int nfp_net_rx_fill_freelist(struct nfp_net_rxq *rxq);
-static uint32_t nfp_net_rx_queue_count(struct rte_eth_dev *dev,
-				       uint16_t queue_idx);
-static uint16_t nfp_net_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
-				  uint16_t nb_pkts);
-static void nfp_net_rx_queue_release(void *rxq);
-static int nfp_net_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
-				  uint16_t nb_desc, unsigned int socket_id,
-				  const struct rte_eth_rxconf *rx_conf,
-				  struct rte_mempool *mp);
-static int nfp_net_tx_free_bufs(struct nfp_net_txq *txq);
-static void nfp_net_tx_queue_release(void *txq);
-static int nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
-				  uint16_t nb_desc, unsigned int socket_id,
-				  const struct rte_eth_txconf *tx_conf);
 static int nfp_net_start(struct rte_eth_dev *dev);
 static int nfp_net_stats_get(struct rte_eth_dev *dev,
 			      struct rte_eth_stats *stats);
 static int nfp_net_stats_reset(struct rte_eth_dev *dev);
 static int nfp_net_stop(struct rte_eth_dev *dev);
-static uint16_t nfp_net_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
-				  uint16_t nb_pkts);
-
 static int nfp_net_rss_config_default(struct rte_eth_dev *dev);
 static int nfp_net_rss_hash_update(struct rte_eth_dev *dev,
 				   struct rte_eth_rss_conf *rss_conf);
@@ -106,184 +88,6 @@ static int nfp_fw_setup(struct rte_pci_device *dev,
 			struct nfp_eth_table *nfp_eth_table,
 			struct nfp_hwinfo *hwinfo);
 
-
-/* The offset of the queue controller queues in the PCIe Target */
-#define NFP_PCIE_QUEUE(_q) (0x80000 + (NFP_QCP_QUEUE_ADDR_SZ * ((_q) & 0xff)))
-
-/* Maximum value which can be added to a queue with one transaction */
-#define NFP_QCP_MAX_ADD	0x7f
-
-#define RTE_MBUF_DMA_ADDR_DEFAULT(mb) \
-	(uint64_t)((mb)->buf_iova + RTE_PKTMBUF_HEADROOM)
-
-/* nfp_qcp_ptr - Read or Write Pointer of a queue */
-enum nfp_qcp_ptr {
-	NFP_QCP_READ_PTR = 0,
-	NFP_QCP_WRITE_PTR
-};
-
-/*
- * nfp_qcp_ptr_add - Add the value to the selected pointer of a queue
- * @q: Base address for queue structure
- * @ptr: Add to the Read or Write pointer
- * @val: Value to add to the queue pointer
- *
- * If @val is greater than @NFP_QCP_MAX_ADD multiple writes are performed.
- */
-static inline void
-nfp_qcp_ptr_add(uint8_t *q, enum nfp_qcp_ptr ptr, uint32_t val)
-{
-	uint32_t off;
-
-	if (ptr == NFP_QCP_READ_PTR)
-		off = NFP_QCP_QUEUE_ADD_RPTR;
-	else
-		off = NFP_QCP_QUEUE_ADD_WPTR;
-
-	while (val > NFP_QCP_MAX_ADD) {
-		nn_writel(rte_cpu_to_le_32(NFP_QCP_MAX_ADD), q + off);
-		val -= NFP_QCP_MAX_ADD;
-	}
-
-	nn_writel(rte_cpu_to_le_32(val), q + off);
-}
-
-/*
- * nfp_qcp_read - Read the current Read/Write pointer value for a queue
- * @q:  Base address for queue structure
- * @ptr: Read or Write pointer
- */
-static inline uint32_t
-nfp_qcp_read(uint8_t *q, enum nfp_qcp_ptr ptr)
-{
-	uint32_t off;
-	uint32_t val;
-
-	if (ptr == NFP_QCP_READ_PTR)
-		off = NFP_QCP_QUEUE_STS_LO;
-	else
-		off = NFP_QCP_QUEUE_STS_HI;
-
-	val = rte_cpu_to_le_32(nn_readl(q + off));
-
-	if (ptr == NFP_QCP_READ_PTR)
-		return val & NFP_QCP_QUEUE_STS_LO_READPTR_mask;
-	else
-		return val & NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask;
-}
-
-/*
- * Functions to read/write from/to Config BAR
- * Performs any endian conversion necessary.
- */
-static inline uint8_t
-nn_cfg_readb(struct nfp_net_hw *hw, int off)
-{
-	return nn_readb(hw->ctrl_bar + off);
-}
-
-static inline void
-nn_cfg_writeb(struct nfp_net_hw *hw, int off, uint8_t val)
-{
-	nn_writeb(val, hw->ctrl_bar + off);
-}
-
-static inline uint32_t
-nn_cfg_readl(struct nfp_net_hw *hw, int off)
-{
-	return rte_le_to_cpu_32(nn_readl(hw->ctrl_bar + off));
-}
-
-static inline void
-nn_cfg_writel(struct nfp_net_hw *hw, int off, uint32_t val)
-{
-	nn_writel(rte_cpu_to_le_32(val), hw->ctrl_bar + off);
-}
-
-static inline uint64_t
-nn_cfg_readq(struct nfp_net_hw *hw, int off)
-{
-	return rte_le_to_cpu_64(nn_readq(hw->ctrl_bar + off));
-}
-
-static inline void
-nn_cfg_writeq(struct nfp_net_hw *hw, int off, uint64_t val)
-{
-	nn_writeq(rte_cpu_to_le_64(val), hw->ctrl_bar + off);
-}
-
-static void
-nfp_net_rx_queue_release_mbufs(struct nfp_net_rxq *rxq)
-{
-	unsigned i;
-
-	if (rxq->rxbufs == NULL)
-		return;
-
-	for (i = 0; i < rxq->rx_count; i++) {
-		if (rxq->rxbufs[i].mbuf) {
-			rte_pktmbuf_free_seg(rxq->rxbufs[i].mbuf);
-			rxq->rxbufs[i].mbuf = NULL;
-		}
-	}
-}
-
-static void
-nfp_net_rx_queue_release(void *rx_queue)
-{
-	struct nfp_net_rxq *rxq = rx_queue;
-
-	if (rxq) {
-		nfp_net_rx_queue_release_mbufs(rxq);
-		rte_free(rxq->rxbufs);
-		rte_free(rxq);
-	}
-}
-
-static void
-nfp_net_reset_rx_queue(struct nfp_net_rxq *rxq)
-{
-	nfp_net_rx_queue_release_mbufs(rxq);
-	rxq->rd_p = 0;
-	rxq->nb_rx_hold = 0;
-}
-
-static void
-nfp_net_tx_queue_release_mbufs(struct nfp_net_txq *txq)
-{
-	unsigned i;
-
-	if (txq->txbufs == NULL)
-		return;
-
-	for (i = 0; i < txq->tx_count; i++) {
-		if (txq->txbufs[i].mbuf) {
-			rte_pktmbuf_free_seg(txq->txbufs[i].mbuf);
-			txq->txbufs[i].mbuf = NULL;
-		}
-	}
-}
-
-static void
-nfp_net_tx_queue_release(void *tx_queue)
-{
-	struct nfp_net_txq *txq = tx_queue;
-
-	if (txq) {
-		nfp_net_tx_queue_release_mbufs(txq);
-		rte_free(txq->txbufs);
-		rte_free(txq);
-	}
-}
-
-static void
-nfp_net_reset_tx_queue(struct nfp_net_txq *txq)
-{
-	nfp_net_tx_queue_release_mbufs(txq);
-	txq->wr_p = 0;
-	txq->rd_p = 0;
-}
-
 static int
 __nfp_net_reconfig(struct nfp_net_hw *hw, uint32_t update)
 {
@@ -461,18 +265,6 @@ nfp_net_disable_queues(struct rte_eth_dev *dev)
 	hw->ctrl = new_ctrl;
 }
 
-static int
-nfp_net_rx_freelist_setup(struct rte_eth_dev *dev)
-{
-	int i;
-
-	for (i = 0; i < dev->data->nb_rx_queues; i++) {
-		if (nfp_net_rx_fill_freelist(dev->data->rx_queues[i]) < 0)
-			return -1;
-	}
-	return 0;
-}
-
 static void
 nfp_net_params_setup(struct nfp_net_hw *hw)
 {
@@ -1349,44 +1141,6 @@ nfp_net_supported_ptypes_get(struct rte_eth_dev *dev)
 	return NULL;
 }
 
-static uint32_t
-nfp_net_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx)
-{
-	struct nfp_net_rxq *rxq;
-	struct nfp_net_rx_desc *rxds;
-	uint32_t idx;
-	uint32_t count;
-
-	rxq = (struct nfp_net_rxq *)dev->data->rx_queues[queue_idx];
-
-	idx = rxq->rd_p;
-
-	count = 0;
-
-	/*
-	 * Other PMDs are just checking the DD bit in intervals of 4
-	 * descriptors and counting all four if the first has the DD
-	 * bit on. Of course, this is not accurate but can be good for
-	 * performance. But ideally that should be done in descriptors
-	 * chunks belonging to the same cache line
-	 */
-
-	while (count < rxq->rx_count) {
-		rxds = &rxq->rxds[idx];
-		if ((rxds->rxd.meta_len_dd & PCIE_DESC_RX_DD) == 0)
-			break;
-
-		count++;
-		idx++;
-
-		/* Wrapping? */
-		if ((idx) == rxq->rx_count)
-			idx = 0;
-	}
-
-	return count;
-}
-
 static int
 nfp_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
 {
@@ -1568,850 +1322,6 @@ nfp_net_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 	return 0;
 }
 
-static int
-nfp_net_rx_queue_setup(struct rte_eth_dev *dev,
-		       uint16_t queue_idx, uint16_t nb_desc,
-		       unsigned int socket_id,
-		       const struct rte_eth_rxconf *rx_conf,
-		       struct rte_mempool *mp)
-{
-	const struct rte_memzone *tz;
-	struct nfp_net_rxq *rxq;
-	struct nfp_net_hw *hw;
-	uint32_t rx_desc_sz;
-
-	hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-
-	PMD_INIT_FUNC_TRACE();
-
-	/* Validating number of descriptors */
-	rx_desc_sz = nb_desc * sizeof(struct nfp_net_rx_desc);
-	if (rx_desc_sz % NFP_ALIGN_RING_DESC != 0 ||
-	    nb_desc > NFP_NET_MAX_RX_DESC ||
-	    nb_desc < NFP_NET_MIN_RX_DESC) {
-		PMD_DRV_LOG(ERR, "Wrong nb_desc value");
-		return -EINVAL;
-	}
-
-	/*
-	 * Free memory prior to re-allocation if needed. This is the case after
-	 * calling nfp_net_stop
-	 */
-	if (dev->data->rx_queues[queue_idx]) {
-		nfp_net_rx_queue_release(dev->data->rx_queues[queue_idx]);
-		dev->data->rx_queues[queue_idx] = NULL;
-	}
-
-	/* Allocating rx queue data structure */
-	rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct nfp_net_rxq),
-				 RTE_CACHE_LINE_SIZE, socket_id);
-	if (rxq == NULL)
-		return -ENOMEM;
-
-	/* Hw queues mapping based on firmware configuration */
-	rxq->qidx = queue_idx;
-	rxq->fl_qcidx = queue_idx * hw->stride_rx;
-	rxq->rx_qcidx = rxq->fl_qcidx + (hw->stride_rx - 1);
-	rxq->qcp_fl = hw->rx_bar + NFP_QCP_QUEUE_OFF(rxq->fl_qcidx);
-	rxq->qcp_rx = hw->rx_bar + NFP_QCP_QUEUE_OFF(rxq->rx_qcidx);
-
-	/*
-	 * Tracking mbuf size for detecting a potential mbuf overflow due to
-	 * RX offset
-	 */
-	rxq->mem_pool = mp;
-	rxq->mbuf_size = rxq->mem_pool->elt_size;
-	rxq->mbuf_size -= (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM);
-	hw->flbufsz = rxq->mbuf_size;
-
-	rxq->rx_count = nb_desc;
-	rxq->port_id = dev->data->port_id;
-	rxq->rx_free_thresh = rx_conf->rx_free_thresh;
-	rxq->drop_en = rx_conf->rx_drop_en;
-
-	/*
-	 * Allocate RX ring hardware descriptors. A memzone large enough to
-	 * handle the maximum ring size is allocated in order to allow for
-	 * resizing in later calls to the queue setup function.
-	 */
-	tz = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx,
-				   sizeof(struct nfp_net_rx_desc) *
-				   NFP_NET_MAX_RX_DESC, NFP_MEMZONE_ALIGN,
-				   socket_id);
-
-	if (tz == NULL) {
-		PMD_DRV_LOG(ERR, "Error allocating rx dma");
-		nfp_net_rx_queue_release(rxq);
-		return -ENOMEM;
-	}
-
-	/* Saving physical and virtual addresses for the RX ring */
-	rxq->dma = (uint64_t)tz->iova;
-	rxq->rxds = (struct nfp_net_rx_desc *)tz->addr;
-
-	/* mbuf pointers array for referencing mbufs linked to RX descriptors */
-	rxq->rxbufs = rte_zmalloc_socket("rxq->rxbufs",
-					 sizeof(*rxq->rxbufs) * nb_desc,
-					 RTE_CACHE_LINE_SIZE, socket_id);
-	if (rxq->rxbufs == NULL) {
-		nfp_net_rx_queue_release(rxq);
-		return -ENOMEM;
-	}
-
-	PMD_RX_LOG(DEBUG, "rxbufs=%p hw_ring=%p dma_addr=0x%" PRIx64,
-		   rxq->rxbufs, rxq->rxds, (unsigned long int)rxq->dma);
-
-	nfp_net_reset_rx_queue(rxq);
-
-	dev->data->rx_queues[queue_idx] = rxq;
-	rxq->hw = hw;
-
-	/*
-	 * Telling the HW about the physical address of the RX ring and number
-	 * of descriptors in log2 format
-	 */
-	nn_cfg_writeq(hw, NFP_NET_CFG_RXR_ADDR(queue_idx), rxq->dma);
-	nn_cfg_writeb(hw, NFP_NET_CFG_RXR_SZ(queue_idx), rte_log2_u32(nb_desc));
-
-	return 0;
-}
-
-static int
-nfp_net_rx_fill_freelist(struct nfp_net_rxq *rxq)
-{
-	struct nfp_net_rx_buff *rxe = rxq->rxbufs;
-	uint64_t dma_addr;
-	unsigned i;
-
-	PMD_RX_LOG(DEBUG, "nfp_net_rx_fill_freelist for %u descriptors",
-		   rxq->rx_count);
-
-	for (i = 0; i < rxq->rx_count; i++) {
-		struct nfp_net_rx_desc *rxd;
-		struct rte_mbuf *mbuf = rte_pktmbuf_alloc(rxq->mem_pool);
-
-		if (mbuf == NULL) {
-			PMD_DRV_LOG(ERR, "RX mbuf alloc failed queue_id=%u",
-				(unsigned)rxq->qidx);
-			return -ENOMEM;
-		}
-
-		dma_addr = rte_cpu_to_le_64(RTE_MBUF_DMA_ADDR_DEFAULT(mbuf));
-
-		rxd = &rxq->rxds[i];
-		rxd->fld.dd = 0;
-		rxd->fld.dma_addr_hi = (dma_addr >> 32) & 0xff;
-		rxd->fld.dma_addr_lo = dma_addr & 0xffffffff;
-		rxe[i].mbuf = mbuf;
-		PMD_RX_LOG(DEBUG, "[%d]: %" PRIx64, i, dma_addr);
-	}
-
-	/* Make sure all writes are flushed before telling the hardware */
-	rte_wmb();
-
-	/* Not advertising the whole ring as the firmware gets confused if so */
-	PMD_RX_LOG(DEBUG, "Increment FL write pointer in %u",
-		   rxq->rx_count - 1);
-
-	nfp_qcp_ptr_add(rxq->qcp_fl, NFP_QCP_WRITE_PTR, rxq->rx_count - 1);
-
-	return 0;
-}
-
-static int
-nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
-		       uint16_t nb_desc, unsigned int socket_id,
-		       const struct rte_eth_txconf *tx_conf)
-{
-	const struct rte_memzone *tz;
-	struct nfp_net_txq *txq;
-	uint16_t tx_free_thresh;
-	struct nfp_net_hw *hw;
-	uint32_t tx_desc_sz;
-
-	hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-
-	PMD_INIT_FUNC_TRACE();
-
-	/* Validating number of descriptors */
-	tx_desc_sz = nb_desc * sizeof(struct nfp_net_tx_desc);
-	if (tx_desc_sz % NFP_ALIGN_RING_DESC != 0 ||
-	    nb_desc > NFP_NET_MAX_TX_DESC ||
-	    nb_desc < NFP_NET_MIN_TX_DESC) {
-		PMD_DRV_LOG(ERR, "Wrong nb_desc value");
-		return -EINVAL;
-	}
-
-	tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
-				    tx_conf->tx_free_thresh :
-				    DEFAULT_TX_FREE_THRESH);
-
-	if (tx_free_thresh > (nb_desc)) {
-		PMD_DRV_LOG(ERR,
-			"tx_free_thresh must be less than the number of TX "
-			"descriptors. (tx_free_thresh=%u port=%d "
-			"queue=%d)", (unsigned int)tx_free_thresh,
-			dev->data->port_id, (int)queue_idx);
-		return -(EINVAL);
-	}
-
-	/*
-	 * Free memory prior to re-allocation if needed. This is the case after
-	 * calling nfp_net_stop
-	 */
-	if (dev->data->tx_queues[queue_idx]) {
-		PMD_TX_LOG(DEBUG, "Freeing memory prior to re-allocation %d",
-			   queue_idx);
-		nfp_net_tx_queue_release(dev->data->tx_queues[queue_idx]);
-		dev->data->tx_queues[queue_idx] = NULL;
-	}
-
-	/* Allocating tx queue data structure */
-	txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct nfp_net_txq),
-				 RTE_CACHE_LINE_SIZE, socket_id);
-	if (txq == NULL) {
-		PMD_DRV_LOG(ERR, "Error allocating tx dma");
-		return -ENOMEM;
-	}
-
-	/*
-	 * Allocate TX ring hardware descriptors. A memzone large enough to
-	 * handle the maximum ring size is allocated in order to allow for
-	 * resizing in later calls to the queue setup function.
-	 */
-	tz = rte_eth_dma_zone_reserve(dev, "tx_ring", queue_idx,
-				   sizeof(struct nfp_net_tx_desc) *
-				   NFP_NET_MAX_TX_DESC, NFP_MEMZONE_ALIGN,
-				   socket_id);
-	if (tz == NULL) {
-		PMD_DRV_LOG(ERR, "Error allocating tx dma");
-		nfp_net_tx_queue_release(txq);
-		return -ENOMEM;
-	}
-
-	txq->tx_count = nb_desc;
-	txq->tx_free_thresh = tx_free_thresh;
-	txq->tx_pthresh = tx_conf->tx_thresh.pthresh;
-	txq->tx_hthresh = tx_conf->tx_thresh.hthresh;
-	txq->tx_wthresh = tx_conf->tx_thresh.wthresh;
-
-	/* queue mapping based on firmware configuration */
-	txq->qidx = queue_idx;
-	txq->tx_qcidx = queue_idx * hw->stride_tx;
-	txq->qcp_q = hw->tx_bar + NFP_QCP_QUEUE_OFF(txq->tx_qcidx);
-
-	txq->port_id = dev->data->port_id;
-
-	/* Saving physical and virtual addresses for the TX ring */
-	txq->dma = (uint64_t)tz->iova;
-	txq->txds = (struct nfp_net_tx_desc *)tz->addr;
-
-	/* mbuf pointers array for referencing mbufs linked to TX descriptors */
-	txq->txbufs = rte_zmalloc_socket("txq->txbufs",
-					 sizeof(*txq->txbufs) * nb_desc,
-					 RTE_CACHE_LINE_SIZE, socket_id);
-	if (txq->txbufs == NULL) {
-		nfp_net_tx_queue_release(txq);
-		return -ENOMEM;
-	}
-	PMD_TX_LOG(DEBUG, "txbufs=%p hw_ring=%p dma_addr=0x%" PRIx64,
-		   txq->txbufs, txq->txds, (unsigned long int)txq->dma);
-
-	nfp_net_reset_tx_queue(txq);
-
-	dev->data->tx_queues[queue_idx] = txq;
-	txq->hw = hw;
-
-	/*
-	 * Telling the HW about the physical address of the TX ring and number
-	 * of descriptors in log2 format
-	 */
-	nn_cfg_writeq(hw, NFP_NET_CFG_TXR_ADDR(queue_idx), txq->dma);
-	nn_cfg_writeb(hw, NFP_NET_CFG_TXR_SZ(queue_idx), rte_log2_u32(nb_desc));
-
-	return 0;
-}
-
-/* nfp_net_tx_tso - Set TX descriptor for TSO */
-static inline void
-nfp_net_tx_tso(struct nfp_net_txq *txq, struct nfp_net_tx_desc *txd,
-	       struct rte_mbuf *mb)
-{
-	uint64_t ol_flags;
-	struct nfp_net_hw *hw = txq->hw;
-
-	if (!(hw->cap & NFP_NET_CFG_CTRL_LSO_ANY))
-		goto clean_txd;
-
-	ol_flags = mb->ol_flags;
-
-	if (!(ol_flags & PKT_TX_TCP_SEG))
-		goto clean_txd;
-
-	txd->l3_offset = mb->l2_len;
-	txd->l4_offset = mb->l2_len + mb->l3_len;
-	txd->lso_hdrlen = mb->l2_len + mb->l3_len + mb->l4_len;
-	txd->mss = rte_cpu_to_le_16(mb->tso_segsz);
-	txd->flags = PCIE_DESC_TX_LSO;
-	return;
-
-clean_txd:
-	txd->flags = 0;
-	txd->l3_offset = 0;
-	txd->l4_offset = 0;
-	txd->lso_hdrlen = 0;
-	txd->mss = 0;
-}
-
-/* nfp_net_tx_cksum - Set TX CSUM offload flags in TX descriptor */
-static inline void
-nfp_net_tx_cksum(struct nfp_net_txq *txq, struct nfp_net_tx_desc *txd,
-		 struct rte_mbuf *mb)
-{
-	uint64_t ol_flags;
-	struct nfp_net_hw *hw = txq->hw;
-
-	if (!(hw->cap & NFP_NET_CFG_CTRL_TXCSUM))
-		return;
-
-	ol_flags = mb->ol_flags;
-
-	/* IPv6 does not need checksum */
-	if (ol_flags & PKT_TX_IP_CKSUM)
-		txd->flags |= PCIE_DESC_TX_IP4_CSUM;
-
-	switch (ol_flags & PKT_TX_L4_MASK) {
-	case PKT_TX_UDP_CKSUM:
-		txd->flags |= PCIE_DESC_TX_UDP_CSUM;
-		break;
-	case PKT_TX_TCP_CKSUM:
-		txd->flags |= PCIE_DESC_TX_TCP_CSUM;
-		break;
-	}
-
-	if (ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK))
-		txd->flags |= PCIE_DESC_TX_CSUM;
-}
-
-/* nfp_net_rx_cksum - set mbuf checksum flags based on RX descriptor flags */
-static inline void
-nfp_net_rx_cksum(struct nfp_net_rxq *rxq, struct nfp_net_rx_desc *rxd,
-		 struct rte_mbuf *mb)
-{
-	struct nfp_net_hw *hw = rxq->hw;
-
-	if (!(hw->ctrl & NFP_NET_CFG_CTRL_RXCSUM))
-		return;
-
-	/* If IPv4 and IP checksum error, fail */
-	if (unlikely((rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM) &&
-	    !(rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM_OK)))
-		mb->ol_flags |= PKT_RX_IP_CKSUM_BAD;
-	else
-		mb->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
-
-	/* If neither UDP nor TCP return */
-	if (!(rxd->rxd.flags & PCIE_DESC_RX_TCP_CSUM) &&
-	    !(rxd->rxd.flags & PCIE_DESC_RX_UDP_CSUM))
-		return;
-
-	if (likely(rxd->rxd.flags & PCIE_DESC_RX_L4_CSUM_OK))
-		mb->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
-	else
-		mb->ol_flags |= PKT_RX_L4_CKSUM_BAD;
-}
-
-#define NFP_HASH_OFFSET      ((uint8_t *)mbuf->buf_addr + mbuf->data_off - 4)
-#define NFP_HASH_TYPE_OFFSET ((uint8_t *)mbuf->buf_addr + mbuf->data_off - 8)
-
-#define NFP_DESC_META_LEN(d) (d->rxd.meta_len_dd & PCIE_DESC_RX_META_LEN_MASK)
-
-/*
- * nfp_net_set_hash - Set mbuf hash data
- *
- * The RSS hash and hash-type are pre-pended to the packet data.
- * Extract and decode it and set the mbuf fields.
- */
-static inline void
-nfp_net_set_hash(struct nfp_net_rxq *rxq, struct nfp_net_rx_desc *rxd,
-		 struct rte_mbuf *mbuf)
-{
-	struct nfp_net_hw *hw = rxq->hw;
-	uint8_t *meta_offset;
-	uint32_t meta_info;
-	uint32_t hash = 0;
-	uint32_t hash_type = 0;
-
-	if (!(hw->ctrl & NFP_NET_CFG_CTRL_RSS))
-		return;
-
-	/* this is true for new firmwares */
-	if (likely(((hw->cap & NFP_NET_CFG_CTRL_RSS2) ||
-	    (NFD_CFG_MAJOR_VERSION_of(hw->ver) == 4)) &&
-	     NFP_DESC_META_LEN(rxd))) {
-		/*
-		 * new metadata api:
-		 * <----  32 bit  ----->
-		 * m    field type word
-		 * e     data field #2
-		 * t     data field #1
-		 * a     data field #0
-		 * ====================
-		 *    packet data
-		 *
-		 * Field type word contains up to 8 4bit field types
-		 * A 4bit field type refers to a data field word
-		 * A data field word can have several 4bit field types
-		 */
-		meta_offset = rte_pktmbuf_mtod(mbuf, uint8_t *);
-		meta_offset -= NFP_DESC_META_LEN(rxd);
-		meta_info = rte_be_to_cpu_32(*(uint32_t *)meta_offset);
-		meta_offset += 4;
-		/* NFP PMD just supports metadata for hashing */
-		switch (meta_info & NFP_NET_META_FIELD_MASK) {
-		case NFP_NET_META_HASH:
-			/* next field type is about the hash type */
-			meta_info >>= NFP_NET_META_FIELD_SIZE;
-			/* hash value is in the data field */
-			hash = rte_be_to_cpu_32(*(uint32_t *)meta_offset);
-			hash_type = meta_info & NFP_NET_META_FIELD_MASK;
-			break;
-		default:
-			/* Unsupported metadata can be a performance issue */
-			return;
-		}
-	} else {
-		if (!(rxd->rxd.flags & PCIE_DESC_RX_RSS))
-			return;
-
-		hash = rte_be_to_cpu_32(*(uint32_t *)NFP_HASH_OFFSET);
-		hash_type = rte_be_to_cpu_32(*(uint32_t *)NFP_HASH_TYPE_OFFSET);
-	}
-
-	mbuf->hash.rss = hash;
-	mbuf->ol_flags |= PKT_RX_RSS_HASH;
-
-	switch (hash_type) {
-	case NFP_NET_RSS_IPV4:
-		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV4;
-		break;
-	case NFP_NET_RSS_IPV6:
-		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6;
-		break;
-	case NFP_NET_RSS_IPV6_EX:
-		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
-		break;
-	case NFP_NET_RSS_IPV4_TCP:
-		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
-		break;
-	case NFP_NET_RSS_IPV6_TCP:
-		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
-		break;
-	case NFP_NET_RSS_IPV4_UDP:
-		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
-		break;
-	case NFP_NET_RSS_IPV6_UDP:
-		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
-		break;
-	default:
-		mbuf->packet_type |= RTE_PTYPE_INNER_L4_MASK;
-	}
-}
-
-static inline void
-nfp_net_mbuf_alloc_failed(struct nfp_net_rxq *rxq)
-{
-	rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++;
-}
-
-#define NFP_DESC_META_LEN(d) (d->rxd.meta_len_dd & PCIE_DESC_RX_META_LEN_MASK)
-
-/*
- * RX path design:
- *
- * There are some decisions to take:
- * 1) How to check DD RX descriptors bit
- * 2) How and when to allocate new mbufs
- *
- * Current implementation checks just one single DD bit each loop. As each
- * descriptor is 8 bytes, it is likely a good idea to check descriptors in
- * a single cache line instead. Tests with this change have not shown any
- * performance improvement but it requires further investigation. For example,
- * depending on which descriptor is next, the number of descriptors could be
- * less than 8 for just checking those in the same cache line. This implies
- * extra work which could be counterproductive by itself. Indeed, last firmware
- * changes are just doing this: writing several descriptors with the DD bit
- * for saving PCIe bandwidth and DMA operations from the NFP.
- *
- * Mbuf allocation is done when a new packet is received. Then the descriptor
- * is automatically linked with the new mbuf and the old one is given to the
- * user. The main drawback with this design is mbuf allocation is heavier than
- * using bulk allocations allowed by DPDK with rte_mempool_get_bulk. From the
- * cache point of view it does not seem allocating the mbuf early on as we are
- * doing now have any benefit at all. Again, tests with this change have not
- * shown any improvement. Also, rte_mempool_get_bulk returns all or nothing
- * so looking at the implications of this type of allocation should be studied
- * deeply
- */
-
-static uint16_t
-nfp_net_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
-{
-	struct nfp_net_rxq *rxq;
-	struct nfp_net_rx_desc *rxds;
-	struct nfp_net_rx_buff *rxb;
-	struct nfp_net_hw *hw;
-	struct rte_mbuf *mb;
-	struct rte_mbuf *new_mb;
-	uint16_t nb_hold;
-	uint64_t dma_addr;
-	int avail;
-
-	rxq = rx_queue;
-	if (unlikely(rxq == NULL)) {
-		/*
-		 * DPDK just checks the queue is lower than max queues
-		 * enabled. But the queue needs to be configured
-		 */
-		RTE_LOG_DP(ERR, PMD, "RX Bad queue\n");
-		return -EINVAL;
-	}
-
-	hw = rxq->hw;
-	avail = 0;
-	nb_hold = 0;
-
-	while (avail < nb_pkts) {
-		rxb = &rxq->rxbufs[rxq->rd_p];
-		if (unlikely(rxb == NULL)) {
-			RTE_LOG_DP(ERR, PMD, "rxb does not exist!\n");
-			break;
-		}
-
-		rxds = &rxq->rxds[rxq->rd_p];
-		if ((rxds->rxd.meta_len_dd & PCIE_DESC_RX_DD) == 0)
-			break;
-
-		/*
-		 * Memory barrier to ensure that we won't do other
-		 * reads before the DD bit.
-		 */
-		rte_rmb();
-
-		/*
-		 * We got a packet. Let's alloc a new mbuf for refilling the
-		 * free descriptor ring as soon as possible
-		 */
-		new_mb = rte_pktmbuf_alloc(rxq->mem_pool);
-		if (unlikely(new_mb == NULL)) {
-			RTE_LOG_DP(DEBUG, PMD,
-			"RX mbuf alloc failed port_id=%u queue_id=%u\n",
-				rxq->port_id, (unsigned int)rxq->qidx);
-			nfp_net_mbuf_alloc_failed(rxq);
-			break;
-		}
-
-		nb_hold++;
-
-		/*
-		 * Grab the mbuf and refill the descriptor with the
-		 * previously allocated mbuf
-		 */
-		mb = rxb->mbuf;
-		rxb->mbuf = new_mb;
-
-		PMD_RX_LOG(DEBUG, "Packet len: %u, mbuf_size: %u",
-			   rxds->rxd.data_len, rxq->mbuf_size);
-
-		/* Size of this segment */
-		mb->data_len = rxds->rxd.data_len - NFP_DESC_META_LEN(rxds);
-		/* Size of the whole packet. We just support 1 segment */
-		mb->pkt_len = rxds->rxd.data_len - NFP_DESC_META_LEN(rxds);
-
-		if (unlikely((mb->data_len + hw->rx_offset) >
-			     rxq->mbuf_size)) {
-			/*
-			 * This should not happen and the user has the
-			 * responsibility of avoiding it. But we have
-			 * to give some info about the error
-			 */
-			RTE_LOG_DP(ERR, PMD,
-				"mbuf overflow likely due to the RX offset.\n"
-				"\t\tYour mbuf size should have extra space for"
-				" RX offset=%u bytes.\n"
-				"\t\tCurrently you just have %u bytes available"
-				" but the received packet is %u bytes long",
-				hw->rx_offset,
-				rxq->mbuf_size - hw->rx_offset,
-				mb->data_len);
-			return -EINVAL;
-		}
-
-		/* Filling the received mbuf with packet info */
-		if (hw->rx_offset)
-			mb->data_off = RTE_PKTMBUF_HEADROOM + hw->rx_offset;
-		else
-			mb->data_off = RTE_PKTMBUF_HEADROOM +
-				       NFP_DESC_META_LEN(rxds);
-
-		/* No scatter mode supported */
-		mb->nb_segs = 1;
-		mb->next = NULL;
-
-		mb->port = rxq->port_id;
-
-		/* Checking the RSS flag */
-		nfp_net_set_hash(rxq, rxds, mb);
-
-		/* Checking the checksum flag */
-		nfp_net_rx_cksum(rxq, rxds, mb);
-
-		if ((rxds->rxd.flags & PCIE_DESC_RX_VLAN) &&
-		    (hw->ctrl & NFP_NET_CFG_CTRL_RXVLAN)) {
-			mb->vlan_tci = rte_cpu_to_le_32(rxds->rxd.vlan);
-			mb->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
-		}
-
-		/* Adding the mbuf to the mbuf array passed by the app */
-		rx_pkts[avail++] = mb;
-
-		/* Now resetting and updating the descriptor */
-		rxds->vals[0] = 0;
-		rxds->vals[1] = 0;
-		dma_addr = rte_cpu_to_le_64(RTE_MBUF_DMA_ADDR_DEFAULT(new_mb));
-		rxds->fld.dd = 0;
-		rxds->fld.dma_addr_hi = (dma_addr >> 32) & 0xff;
-		rxds->fld.dma_addr_lo = dma_addr & 0xffffffff;
-
-		rxq->rd_p++;
-		if (unlikely(rxq->rd_p == rxq->rx_count)) /* wrapping?*/
-			rxq->rd_p = 0;
-	}
-
-	if (nb_hold == 0)
-		return nb_hold;
-
-	PMD_RX_LOG(DEBUG, "RX  port_id=%u queue_id=%u, %d packets received",
-		   rxq->port_id, (unsigned int)rxq->qidx, nb_hold);
-
-	nb_hold += rxq->nb_rx_hold;
-
-	/*
-	 * FL descriptors needs to be written before incrementing the
-	 * FL queue WR pointer
-	 */
-	rte_wmb();
-	if (nb_hold > rxq->rx_free_thresh) {
-		PMD_RX_LOG(DEBUG, "port=%u queue=%u nb_hold=%u avail=%u",
-			   rxq->port_id, (unsigned int)rxq->qidx,
-			   (unsigned)nb_hold, (unsigned)avail);
-		nfp_qcp_ptr_add(rxq->qcp_fl, NFP_QCP_WRITE_PTR, nb_hold);
-		nb_hold = 0;
-	}
-	rxq->nb_rx_hold = nb_hold;
-
-	return avail;
-}
-
-/*
- * nfp_net_tx_free_bufs - Check for descriptors with a complete
- * status
- * @txq: TX queue to work with
- * Returns number of descriptors freed
- */
-int
-nfp_net_tx_free_bufs(struct nfp_net_txq *txq)
-{
-	uint32_t qcp_rd_p;
-	int todo;
-
-	PMD_TX_LOG(DEBUG, "queue %u. Check for descriptor with a complete"
-		   " status", txq->qidx);
-
-	/* Work out how many packets have been sent */
-	qcp_rd_p = nfp_qcp_read(txq->qcp_q, NFP_QCP_READ_PTR);
-
-	if (qcp_rd_p == txq->rd_p) {
-		PMD_TX_LOG(DEBUG, "queue %u: It seems harrier is not sending "
-			   "packets (%u, %u)", txq->qidx,
-			   qcp_rd_p, txq->rd_p);
-		return 0;
-	}
-
-	if (qcp_rd_p > txq->rd_p)
-		todo = qcp_rd_p - txq->rd_p;
-	else
-		todo = qcp_rd_p + txq->tx_count - txq->rd_p;
-
-	PMD_TX_LOG(DEBUG, "qcp_rd_p %u, txq->rd_p: %u, qcp->rd_p: %u",
-		   qcp_rd_p, txq->rd_p, txq->rd_p);
-
-	if (todo == 0)
-		return todo;
-
-	txq->rd_p += todo;
-	if (unlikely(txq->rd_p >= txq->tx_count))
-		txq->rd_p -= txq->tx_count;
-
-	return todo;
-}
-
-/* Leaving always free descriptors for avoiding wrapping confusion */
-static inline
-uint32_t nfp_free_tx_desc(struct nfp_net_txq *txq)
-{
-	if (txq->wr_p >= txq->rd_p)
-		return txq->tx_count - (txq->wr_p - txq->rd_p) - 8;
-	else
-		return txq->rd_p - txq->wr_p - 8;
-}
-
-/*
- * nfp_net_txq_full - Check if the TX queue free descriptors
- * is below tx_free_threshold
- *
- * @txq: TX queue to check
- *
- * This function uses the host copy* of read/write pointers
- */
-static inline
-uint32_t nfp_net_txq_full(struct nfp_net_txq *txq)
-{
-	return (nfp_free_tx_desc(txq) < txq->tx_free_thresh);
-}
-
-static uint16_t
-nfp_net_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
-{
-	struct nfp_net_txq *txq;
-	struct nfp_net_hw *hw;
-	struct nfp_net_tx_desc *txds, txd;
-	struct rte_mbuf *pkt;
-	uint64_t dma_addr;
-	int pkt_size, dma_size;
-	uint16_t free_descs, issued_descs;
-	struct rte_mbuf **lmbuf;
-	int i;
-
-	txq = tx_queue;
-	hw = txq->hw;
-	txds = &txq->txds[txq->wr_p];
-
-	PMD_TX_LOG(DEBUG, "working for queue %u at pos %d and %u packets",
-		   txq->qidx, txq->wr_p, nb_pkts);
-
-	if ((nfp_free_tx_desc(txq) < nb_pkts) || (nfp_net_txq_full(txq)))
-		nfp_net_tx_free_bufs(txq);
-
-	free_descs = (uint16_t)nfp_free_tx_desc(txq);
-	if (unlikely(free_descs == 0))
-		return 0;
-
-	pkt = *tx_pkts;
-
-	i = 0;
-	issued_descs = 0;
-	PMD_TX_LOG(DEBUG, "queue: %u. Sending %u packets",
-		   txq->qidx, nb_pkts);
-	/* Sending packets */
-	while ((i < nb_pkts) && free_descs) {
-		/* Grabbing the mbuf linked to the current descriptor */
-		lmbuf = &txq->txbufs[txq->wr_p].mbuf;
-		/* Warming the cache for releasing the mbuf later on */
-		RTE_MBUF_PREFETCH_TO_FREE(*lmbuf);
-
-		pkt = *(tx_pkts + i);
-
-		if (unlikely((pkt->nb_segs > 1) &&
-			     !(hw->cap & NFP_NET_CFG_CTRL_GATHER))) {
-			PMD_INIT_LOG(INFO, "NFP_NET_CFG_CTRL_GATHER not set");
-			rte_panic("Multisegment packet unsupported\n");
-		}
-
-		/* Checking if we have enough descriptors */
-		if (unlikely(pkt->nb_segs > free_descs))
-			goto xmit_end;
-
-		/*
-		 * Checksum and VLAN flags just in the first descriptor for a
-		 * multisegment packet, but TSO info needs to be in all of them.
-		 */
-		txd.data_len = pkt->pkt_len;
-		nfp_net_tx_tso(txq, &txd, pkt);
-		nfp_net_tx_cksum(txq, &txd, pkt);
-
-		if ((pkt->ol_flags & PKT_TX_VLAN_PKT) &&
-		    (hw->cap & NFP_NET_CFG_CTRL_TXVLAN)) {
-			txd.flags |= PCIE_DESC_TX_VLAN;
-			txd.vlan = pkt->vlan_tci;
-		}
-
-		/*
-		 * mbuf data_len is the data in one segment and pkt_len data
-		 * in the whole packet. When the packet is just one segment,
-		 * then data_len = pkt_len
-		 */
-		pkt_size = pkt->pkt_len;
-
-		while (pkt) {
-			/* Copying TSO, VLAN and cksum info */
-			*txds = txd;
-
-			/* Releasing mbuf used by this descriptor previously*/
-			if (*lmbuf)
-				rte_pktmbuf_free_seg(*lmbuf);
-
-			/*
-			 * Linking mbuf with descriptor for being released
-			 * next time descriptor is used
-			 */
-			*lmbuf = pkt;
-
-			dma_size = pkt->data_len;
-			dma_addr = rte_mbuf_data_iova(pkt);
-			PMD_TX_LOG(DEBUG, "Working with mbuf at dma address:"
-				   "%" PRIx64 "", dma_addr);
-
-			/* Filling descriptors fields */
-			txds->dma_len = dma_size;
-			txds->data_len = txd.data_len;
-			txds->dma_addr_hi = (dma_addr >> 32) & 0xff;
-			txds->dma_addr_lo = (dma_addr & 0xffffffff);
-			ASSERT(free_descs > 0);
-			free_descs--;
-
-			txq->wr_p++;
-			if (unlikely(txq->wr_p == txq->tx_count)) /* wrapping?*/
-				txq->wr_p = 0;
-
-			pkt_size -= dma_size;
-
-			/*
-			 * Making the EOP, packets with just one segment
-			 * the priority
-			 */
-			if (likely(!pkt_size))
-				txds->offset_eop = PCIE_DESC_TX_EOP;
-			else
-				txds->offset_eop = 0;
-
-			pkt = pkt->next;
-			/* Referencing next free TX descriptor */
-			txds = &txq->txds[txq->wr_p];
-			lmbuf = &txq->txbufs[txq->wr_p].mbuf;
-			issued_descs++;
-		}
-		i++;
-	}
-
-xmit_end:
-	/* Increment write pointers. Force memory write before we let HW know */
-	rte_wmb();
-	nfp_qcp_ptr_add(txq->qcp_q, NFP_QCP_WRITE_PTR, issued_descs);
-
-	return i;
-}
-
 static int
 nfp_net_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 {
diff --git a/drivers/net/nfp/nfp_net_pmd.h b/drivers/net/nfp/nfp_net_pmd.h
index a3a3ba32d6..9265496bf0 100644
--- a/drivers/net/nfp/nfp_net_pmd.h
+++ b/drivers/net/nfp/nfp_net_pmd.h
@@ -41,6 +41,12 @@ struct nfp_net_adapter;
 #define NFP_QCP_QUEUE_STS_HI                    0x000c
 #define NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask    (0x3ffff)
 
+/* The offset of the queue controller queues in the PCIe Target */
+#define NFP_PCIE_QUEUE(_q) (0x80000 + (NFP_QCP_QUEUE_ADDR_SZ * ((_q) & 0xff)))
+
+/* Maximum value which can be added to a queue with one transaction */
+#define NFP_QCP_MAX_ADD	0x7f
+
 /* Interrupt definitions */
 #define NFP_NET_IRQ_LSC_IDX             0
 
@@ -95,47 +101,11 @@ struct nfp_net_adapter;
 #include <linux/types.h>
 #include <rte_io.h>
 
-static inline uint8_t nn_readb(volatile const void *addr)
-{
-	return rte_read8(addr);
-}
-
-static inline void nn_writeb(uint8_t val, volatile void *addr)
-{
-	rte_write8(val, addr);
-}
-
-static inline uint32_t nn_readl(volatile const void *addr)
-{
-	return rte_read32(addr);
-}
-
-static inline void nn_writel(uint32_t val, volatile void *addr)
-{
-	rte_write32(val, addr);
-}
-
-static inline void nn_writew(uint16_t val, volatile void *addr)
-{
-	rte_write16(val, addr);
-}
-
-static inline uint64_t nn_readq(volatile void *addr)
-{
-	const volatile uint32_t *p = addr;
-	uint32_t low, high;
-
-	high = nn_readl((volatile const void *)(p + 1));
-	low = nn_readl((volatile const void *)p);
-
-	return low + ((uint64_t)high << 32);
-}
-
-static inline void nn_writeq(uint64_t val, volatile void *addr)
-{
-	nn_writel(val >> 32, (volatile char *)addr + 4);
-	nn_writel(val, addr);
-}
+/* nfp_qcp_ptr - Read or Write Pointer of a queue */
+enum nfp_qcp_ptr {
+	NFP_QCP_READ_PTR = 0,
+	NFP_QCP_WRITE_PTR
+};
 
 struct nfp_pf_dev {
 	/* Backpointer to associated pci device */
@@ -247,6 +217,138 @@ struct nfp_net_adapter {
 	struct nfp_net_hw hw;
 };
 
+static inline uint8_t nn_readb(volatile const void *addr)
+{
+	return rte_read8(addr);
+}
+
+static inline void nn_writeb(uint8_t val, volatile void *addr)
+{
+	rte_write8(val, addr);
+}
+
+static inline uint32_t nn_readl(volatile const void *addr)
+{
+	return rte_read32(addr);
+}
+
+static inline void nn_writel(uint32_t val, volatile void *addr)
+{
+	rte_write32(val, addr);
+}
+
+static inline void nn_writew(uint16_t val, volatile void *addr)
+{
+	rte_write16(val, addr);
+}
+
+static inline uint64_t nn_readq(volatile void *addr)
+{
+	const volatile uint32_t *p = addr;
+	uint32_t low, high;
+
+	high = nn_readl((volatile const void *)(p + 1));
+	low = nn_readl((volatile const void *)p);
+
+	return low + ((uint64_t)high << 32);
+}
+
+static inline void nn_writeq(uint64_t val, volatile void *addr)
+{
+	nn_writel(val >> 32, (volatile char *)addr + 4);
+	nn_writel(val, addr);
+}
+
+/*
+ * Functions to read/write from/to Config BAR
+ * Performs any endian conversion necessary.
+ */
+static inline uint8_t
+nn_cfg_readb(struct nfp_net_hw *hw, int off)
+{
+	return nn_readb(hw->ctrl_bar + off);
+}
+
+static inline void
+nn_cfg_writeb(struct nfp_net_hw *hw, int off, uint8_t val)
+{
+	nn_writeb(val, hw->ctrl_bar + off);
+}
+
+static inline uint32_t
+nn_cfg_readl(struct nfp_net_hw *hw, int off)
+{
+	return rte_le_to_cpu_32(nn_readl(hw->ctrl_bar + off));
+}
+
+static inline void
+nn_cfg_writel(struct nfp_net_hw *hw, int off, uint32_t val)
+{
+	nn_writel(rte_cpu_to_le_32(val), hw->ctrl_bar + off);
+}
+
+static inline uint64_t
+nn_cfg_readq(struct nfp_net_hw *hw, int off)
+{
+	return rte_le_to_cpu_64(nn_readq(hw->ctrl_bar + off));
+}
+
+static inline void
+nn_cfg_writeq(struct nfp_net_hw *hw, int off, uint64_t val)
+{
+	nn_writeq(rte_cpu_to_le_64(val), hw->ctrl_bar + off);
+}
+
+/*
+ * nfp_qcp_ptr_add - Add the value to the selected pointer of a queue
+ * @q: Base address for queue structure
+ * @ptr: Add to the Read or Write pointer
+ * @val: Value to add to the queue pointer
+ *
+ * If @val is greater than @NFP_QCP_MAX_ADD multiple writes are performed.
+ */
+static inline void
+nfp_qcp_ptr_add(uint8_t *q, enum nfp_qcp_ptr ptr, uint32_t val)
+{
+	uint32_t off;
+
+	if (ptr == NFP_QCP_READ_PTR)
+		off = NFP_QCP_QUEUE_ADD_RPTR;
+	else
+		off = NFP_QCP_QUEUE_ADD_WPTR;
+
+	while (val > NFP_QCP_MAX_ADD) {
+		nn_writel(rte_cpu_to_le_32(NFP_QCP_MAX_ADD), q + off);
+		val -= NFP_QCP_MAX_ADD;
+}
+
+nn_writel(rte_cpu_to_le_32(val), q + off);
+}
+
+/*
+ * nfp_qcp_read - Read the current Read/Write pointer value for a queue
+ * @q:  Base address for queue structure
+ * @ptr: Read or Write pointer
+ */
+static inline uint32_t
+nfp_qcp_read(uint8_t *q, enum nfp_qcp_ptr ptr)
+{
+	uint32_t off;
+	uint32_t val;
+
+	if (ptr == NFP_QCP_READ_PTR)
+		off = NFP_QCP_QUEUE_STS_LO;
+	else
+		off = NFP_QCP_QUEUE_STS_HI;
+
+	val = rte_cpu_to_le_32(nn_readl(q + off));
+
+	if (ptr == NFP_QCP_READ_PTR)
+		return val & NFP_QCP_QUEUE_STS_LO_READPTR_mask;
+	else
+		return val & NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask;
+}
+
 #define NFP_NET_DEV_PRIVATE_TO_HW(adapter)\
 	(&((struct nfp_net_adapter *)adapter)->hw)
 
diff --git a/drivers/net/nfp/nfp_rxtx.c b/drivers/net/nfp/nfp_rxtx.c
new file mode 100644
index 0000000000..9ee9e5c9a3
--- /dev/null
+++ b/drivers/net/nfp/nfp_rxtx.c
@@ -0,0 +1,1002 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2014-2021 Netronome Systems, Inc.
+ * All rights reserved.
+ *
+ * Small portions derived from code Copyright(c) 2010-2015 Intel Corporation.
+ */
+
+/*
+ * vim:shiftwidth=8:noexpandtab
+ *
+ * @file dpdk/pmd/nfp_rxtx.c
+ *
+ * Netronome vNIC DPDK Poll-Mode Driver: Rx/Tx functions
+ */
+
+#include <ethdev_driver.h>
+#include <ethdev_pci.h>
+
+#include "nfp_net_pmd.h"
+#include "nfp_rxtx.h"
+#include "nfp_net_logs.h"
+#include "nfp_net_ctrl.h"
+
+/* Prototypes */
+static int nfp_net_rx_fill_freelist(struct nfp_net_rxq *rxq);
+static inline void nfp_net_mbuf_alloc_failed(struct nfp_net_rxq *rxq);
+static inline void nfp_net_set_hash(struct nfp_net_rxq *rxq,
+				    struct nfp_net_rx_desc *rxd,
+				    struct rte_mbuf *mbuf);
+static inline void nfp_net_rx_cksum(struct nfp_net_rxq *rxq,
+				    struct nfp_net_rx_desc *rxd,
+				    struct rte_mbuf *mb);
+static void nfp_net_rx_queue_release_mbufs(struct nfp_net_rxq *rxq);
+static int nfp_net_tx_free_bufs(struct nfp_net_txq *txq);
+static void nfp_net_tx_queue_release_mbufs(struct nfp_net_txq *txq);
+static inline uint32_t nfp_free_tx_desc(struct nfp_net_txq *txq);
+static inline uint32_t nfp_net_txq_full(struct nfp_net_txq *txq);
+static inline void nfp_net_tx_tso(struct nfp_net_txq *txq,
+				  struct nfp_net_tx_desc *txd,
+				  struct rte_mbuf *mb);
+static inline void nfp_net_tx_cksum(struct nfp_net_txq *txq,
+				    struct nfp_net_tx_desc *txd,
+				    struct rte_mbuf *mb);
+
+static int
+nfp_net_rx_fill_freelist(struct nfp_net_rxq *rxq)
+{
+	struct nfp_net_rx_buff *rxe = rxq->rxbufs;
+	uint64_t dma_addr;
+	unsigned int i;
+
+	PMD_RX_LOG(DEBUG, "Fill Rx Freelist for %u descriptors",
+		   rxq->rx_count);
+
+	for (i = 0; i < rxq->rx_count; i++) {
+		struct nfp_net_rx_desc *rxd;
+		struct rte_mbuf *mbuf = rte_pktmbuf_alloc(rxq->mem_pool);
+
+		if (mbuf == NULL) {
+			PMD_DRV_LOG(ERR, "RX mbuf alloc failed queue_id=%u",
+				(unsigned int)rxq->qidx);
+			return -ENOMEM;
+		}
+
+		dma_addr = rte_cpu_to_le_64(RTE_MBUF_DMA_ADDR_DEFAULT(mbuf));
+
+		rxd = &rxq->rxds[i];
+		rxd->fld.dd = 0;
+		rxd->fld.dma_addr_hi = (dma_addr >> 32) & 0xff;
+		rxd->fld.dma_addr_lo = dma_addr & 0xffffffff;
+		rxe[i].mbuf = mbuf;
+		PMD_RX_LOG(DEBUG, "[%d]: %" PRIx64, i, dma_addr);
+	}
+
+	/* Make sure all writes are flushed before telling the hardware */
+	rte_wmb();
+
+	/* Not advertising the whole ring as the firmware gets confused if so */
+	PMD_RX_LOG(DEBUG, "Increment FL write pointer in %u",
+		   rxq->rx_count - 1);
+
+	nfp_qcp_ptr_add(rxq->qcp_fl, NFP_QCP_WRITE_PTR, rxq->rx_count - 1);
+
+	return 0;
+}
+
+int
+nfp_net_rx_freelist_setup(struct rte_eth_dev *dev)
+{
+	int i;
+
+	for (i = 0; i < dev->data->nb_rx_queues; i++) {
+		if (nfp_net_rx_fill_freelist(dev->data->rx_queues[i]) < 0)
+			return -1;
+	}
+	return 0;
+}
+
+uint32_t
+nfp_net_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx)
+{
+	struct nfp_net_rxq *rxq;
+	struct nfp_net_rx_desc *rxds;
+	uint32_t idx;
+	uint32_t count;
+
+	rxq = (struct nfp_net_rxq *)dev->data->rx_queues[queue_idx];
+
+	idx = rxq->rd_p;
+
+	count = 0;
+
+	/*
+	 * Other PMDs are just checking the DD bit in intervals of 4
+	 * descriptors and counting all four if the first has the DD
+	 * bit on. Of course, this is not accurate but can be good for
+	 * performance. But ideally that should be done in descriptors
+	 * chunks belonging to the same cache line
+	 */
+
+	while (count < rxq->rx_count) {
+		rxds = &rxq->rxds[idx];
+		if ((rxds->rxd.meta_len_dd & PCIE_DESC_RX_DD) == 0)
+			break;
+
+		count++;
+		idx++;
+
+		/* Wrapping? */
+		if ((idx) == rxq->rx_count)
+			idx = 0;
+	}
+
+	return count;
+}
+
+static inline void
+nfp_net_mbuf_alloc_failed(struct nfp_net_rxq *rxq)
+{
+	rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++;
+}
+
+/*
+ * nfp_net_set_hash - Set mbuf hash data
+ *
+ * The RSS hash and hash-type are pre-pended to the packet data.
+ * Extract and decode it and set the mbuf fields.
+ */
+static inline void
+nfp_net_set_hash(struct nfp_net_rxq *rxq, struct nfp_net_rx_desc *rxd,
+		 struct rte_mbuf *mbuf)
+{
+	struct nfp_net_hw *hw = rxq->hw;
+	uint8_t *meta_offset;
+	uint32_t meta_info;
+	uint32_t hash = 0;
+	uint32_t hash_type = 0;
+
+	if (!(hw->ctrl & NFP_NET_CFG_CTRL_RSS))
+		return;
+
+	/* this is true for new firmwares */
+	if (likely(((hw->cap & NFP_NET_CFG_CTRL_RSS2) ||
+	    (NFD_CFG_MAJOR_VERSION_of(hw->ver) == 4)) &&
+	     NFP_DESC_META_LEN(rxd))) {
+		/*
+		 * new metadata api:
+		 * <----  32 bit  ----->
+		 * m    field type word
+		 * e     data field #2
+		 * t     data field #1
+		 * a     data field #0
+		 * ====================
+		 *    packet data
+		 *
+		 * Field type word contains up to 8 4bit field types
+		 * A 4bit field type refers to a data field word
+		 * A data field word can have several 4bit field types
+		 */
+		meta_offset = rte_pktmbuf_mtod(mbuf, uint8_t *);
+		meta_offset -= NFP_DESC_META_LEN(rxd);
+		meta_info = rte_be_to_cpu_32(*(uint32_t *)meta_offset);
+		meta_offset += 4;
+		/* NFP PMD just supports metadata for hashing */
+		switch (meta_info & NFP_NET_META_FIELD_MASK) {
+		case NFP_NET_META_HASH:
+			/* next field type is about the hash type */
+			meta_info >>= NFP_NET_META_FIELD_SIZE;
+			/* hash value is in the data field */
+			hash = rte_be_to_cpu_32(*(uint32_t *)meta_offset);
+			hash_type = meta_info & NFP_NET_META_FIELD_MASK;
+			break;
+		default:
+			/* Unsupported metadata can be a performance issue */
+			return;
+		}
+	} else {
+		if (!(rxd->rxd.flags & PCIE_DESC_RX_RSS))
+			return;
+
+		hash = rte_be_to_cpu_32(*(uint32_t *)NFP_HASH_OFFSET);
+		hash_type = rte_be_to_cpu_32(*(uint32_t *)NFP_HASH_TYPE_OFFSET);
+	}
+
+	mbuf->hash.rss = hash;
+	mbuf->ol_flags |= PKT_RX_RSS_HASH;
+
+	switch (hash_type) {
+	case NFP_NET_RSS_IPV4:
+		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV4;
+		break;
+	case NFP_NET_RSS_IPV6:
+		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6;
+		break;
+	case NFP_NET_RSS_IPV6_EX:
+		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
+		break;
+	case NFP_NET_RSS_IPV4_TCP:
+		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
+		break;
+	case NFP_NET_RSS_IPV6_TCP:
+		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
+		break;
+	case NFP_NET_RSS_IPV4_UDP:
+		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
+		break;
+	case NFP_NET_RSS_IPV6_UDP:
+		mbuf->packet_type |= RTE_PTYPE_INNER_L3_IPV6_EXT;
+		break;
+	default:
+		mbuf->packet_type |= RTE_PTYPE_INNER_L4_MASK;
+	}
+}
+
+/* nfp_net_rx_cksum - set mbuf checksum flags based on RX descriptor flags */
+static inline void
+nfp_net_rx_cksum(struct nfp_net_rxq *rxq, struct nfp_net_rx_desc *rxd,
+		 struct rte_mbuf *mb)
+{
+	struct nfp_net_hw *hw = rxq->hw;
+
+	if (!(hw->ctrl & NFP_NET_CFG_CTRL_RXCSUM))
+		return;
+
+	/* If IPv4 and IP checksum error, fail */
+	if (unlikely((rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM) &&
+	    !(rxd->rxd.flags & PCIE_DESC_RX_IP4_CSUM_OK)))
+		mb->ol_flags |= PKT_RX_IP_CKSUM_BAD;
+	else
+		mb->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
+
+	/* If neither UDP nor TCP return */
+	if (!(rxd->rxd.flags & PCIE_DESC_RX_TCP_CSUM) &&
+	    !(rxd->rxd.flags & PCIE_DESC_RX_UDP_CSUM))
+		return;
+
+	if (likely(rxd->rxd.flags & PCIE_DESC_RX_L4_CSUM_OK))
+		mb->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
+	else
+		mb->ol_flags |= PKT_RX_L4_CKSUM_BAD;
+}
+
+/*
+ * RX path design:
+ *
+ * There are some decisions to take:
+ * 1) How to check DD RX descriptors bit
+ * 2) How and when to allocate new mbufs
+ *
+ * Current implementation checks just one single DD bit each loop. As each
+ * descriptor is 8 bytes, it is likely a good idea to check descriptors in
+ * a single cache line instead. Tests with this change have not shown any
+ * performance improvement but it requires further investigation. For example,
+ * depending on which descriptor is next, the number of descriptors could be
+ * less than 8 for just checking those in the same cache line. This implies
+ * extra work which could be counterproductive by itself. Indeed, last firmware
+ * changes are just doing this: writing several descriptors with the DD bit
+ * for saving PCIe bandwidth and DMA operations from the NFP.
+ *
+ * Mbuf allocation is done when a new packet is received. Then the descriptor
+ * is automatically linked with the new mbuf and the old one is given to the
+ * user. The main drawback with this design is mbuf allocation is heavier than
+ * using bulk allocations allowed by DPDK with rte_mempool_get_bulk. From the
+ * cache point of view it does not seem allocating the mbuf early on as we are
+ * doing now have any benefit at all. Again, tests with this change have not
+ * shown any improvement. Also, rte_mempool_get_bulk returns all or nothing
+ * so looking at the implications of this type of allocation should be studied
+ * deeply
+ */
+
+uint16_t
+nfp_net_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
+{
+	struct nfp_net_rxq *rxq;
+	struct nfp_net_rx_desc *rxds;
+	struct nfp_net_rx_buff *rxb;
+	struct nfp_net_hw *hw;
+	struct rte_mbuf *mb;
+	struct rte_mbuf *new_mb;
+	uint16_t nb_hold;
+	uint64_t dma_addr;
+	int avail;
+
+	rxq = rx_queue;
+	if (unlikely(rxq == NULL)) {
+		/*
+		 * DPDK just checks the queue is lower than max queues
+		 * enabled. But the queue needs to be configured
+		 */
+		RTE_LOG_DP(ERR, PMD, "RX Bad queue\n");
+		return -EINVAL;
+	}
+
+	hw = rxq->hw;
+	avail = 0;
+	nb_hold = 0;
+
+	while (avail < nb_pkts) {
+		rxb = &rxq->rxbufs[rxq->rd_p];
+		if (unlikely(rxb == NULL)) {
+			RTE_LOG_DP(ERR, PMD, "rxb does not exist!\n");
+			break;
+		}
+
+		rxds = &rxq->rxds[rxq->rd_p];
+		if ((rxds->rxd.meta_len_dd & PCIE_DESC_RX_DD) == 0)
+			break;
+
+		/*
+		 * Memory barrier to ensure that we won't do other
+		 * reads before the DD bit.
+		 */
+		rte_rmb();
+
+		/*
+		 * We got a packet. Let's alloc a new mbuf for refilling the
+		 * free descriptor ring as soon as possible
+		 */
+		new_mb = rte_pktmbuf_alloc(rxq->mem_pool);
+		if (unlikely(new_mb == NULL)) {
+			RTE_LOG_DP(DEBUG, PMD,
+			"RX mbuf alloc failed port_id=%u queue_id=%u\n",
+				rxq->port_id, (unsigned int)rxq->qidx);
+			nfp_net_mbuf_alloc_failed(rxq);
+			break;
+		}
+
+		nb_hold++;
+
+		/*
+		 * Grab the mbuf and refill the descriptor with the
+		 * previously allocated mbuf
+		 */
+		mb = rxb->mbuf;
+		rxb->mbuf = new_mb;
+
+		PMD_RX_LOG(DEBUG, "Packet len: %u, mbuf_size: %u",
+			   rxds->rxd.data_len, rxq->mbuf_size);
+
+		/* Size of this segment */
+		mb->data_len = rxds->rxd.data_len - NFP_DESC_META_LEN(rxds);
+		/* Size of the whole packet. We just support 1 segment */
+		mb->pkt_len = rxds->rxd.data_len - NFP_DESC_META_LEN(rxds);
+
+		if (unlikely((mb->data_len + hw->rx_offset) >
+			     rxq->mbuf_size)) {
+			/*
+			 * This should not happen and the user has the
+			 * responsibility of avoiding it. But we have
+			 * to give some info about the error
+			 */
+			RTE_LOG_DP(ERR, PMD,
+				"mbuf overflow likely due to the RX offset.\n"
+				"\t\tYour mbuf size should have extra space for"
+				" RX offset=%u bytes.\n"
+				"\t\tCurrently you just have %u bytes available"
+				" but the received packet is %u bytes long",
+				hw->rx_offset,
+				rxq->mbuf_size - hw->rx_offset,
+				mb->data_len);
+			return -EINVAL;
+		}
+
+		/* Filling the received mbuf with packet info */
+		if (hw->rx_offset)
+			mb->data_off = RTE_PKTMBUF_HEADROOM + hw->rx_offset;
+		else
+			mb->data_off = RTE_PKTMBUF_HEADROOM +
+				       NFP_DESC_META_LEN(rxds);
+
+		/* No scatter mode supported */
+		mb->nb_segs = 1;
+		mb->next = NULL;
+
+		mb->port = rxq->port_id;
+
+		/* Checking the RSS flag */
+		nfp_net_set_hash(rxq, rxds, mb);
+
+		/* Checking the checksum flag */
+		nfp_net_rx_cksum(rxq, rxds, mb);
+
+		if ((rxds->rxd.flags & PCIE_DESC_RX_VLAN) &&
+		    (hw->ctrl & NFP_NET_CFG_CTRL_RXVLAN)) {
+			mb->vlan_tci = rte_cpu_to_le_32(rxds->rxd.vlan);
+			mb->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
+		}
+
+		/* Adding the mbuf to the mbuf array passed by the app */
+		rx_pkts[avail++] = mb;
+
+		/* Now resetting and updating the descriptor */
+		rxds->vals[0] = 0;
+		rxds->vals[1] = 0;
+		dma_addr = rte_cpu_to_le_64(RTE_MBUF_DMA_ADDR_DEFAULT(new_mb));
+		rxds->fld.dd = 0;
+		rxds->fld.dma_addr_hi = (dma_addr >> 32) & 0xff;
+		rxds->fld.dma_addr_lo = dma_addr & 0xffffffff;
+
+		rxq->rd_p++;
+		if (unlikely(rxq->rd_p == rxq->rx_count)) /* wrapping?*/
+			rxq->rd_p = 0;
+	}
+
+	if (nb_hold == 0)
+		return nb_hold;
+
+	PMD_RX_LOG(DEBUG, "RX  port_id=%u queue_id=%u, %d packets received",
+		   rxq->port_id, (unsigned int)rxq->qidx, nb_hold);
+
+	nb_hold += rxq->nb_rx_hold;
+
+	/*
+	 * FL descriptors needs to be written before incrementing the
+	 * FL queue WR pointer
+	 */
+	rte_wmb();
+	if (nb_hold > rxq->rx_free_thresh) {
+		PMD_RX_LOG(DEBUG, "port=%u queue=%u nb_hold=%u avail=%u",
+			   rxq->port_id, (unsigned int)rxq->qidx,
+			   (unsigned int)nb_hold, (unsigned int)avail);
+		nfp_qcp_ptr_add(rxq->qcp_fl, NFP_QCP_WRITE_PTR, nb_hold);
+		nb_hold = 0;
+	}
+	rxq->nb_rx_hold = nb_hold;
+
+	return avail;
+}
+
+static void
+nfp_net_rx_queue_release_mbufs(struct nfp_net_rxq *rxq)
+{
+	unsigned int i;
+
+	if (rxq->rxbufs == NULL)
+		return;
+
+	for (i = 0; i < rxq->rx_count; i++) {
+		if (rxq->rxbufs[i].mbuf) {
+			rte_pktmbuf_free_seg(rxq->rxbufs[i].mbuf);
+			rxq->rxbufs[i].mbuf = NULL;
+		}
+	}
+}
+
+void
+nfp_net_rx_queue_release(void *rx_queue)
+{
+	struct nfp_net_rxq *rxq = rx_queue;
+
+	if (rxq) {
+		nfp_net_rx_queue_release_mbufs(rxq);
+		rte_free(rxq->rxbufs);
+		rte_free(rxq);
+	}
+}
+
+void
+nfp_net_reset_rx_queue(struct nfp_net_rxq *rxq)
+{
+	nfp_net_rx_queue_release_mbufs(rxq);
+	rxq->rd_p = 0;
+	rxq->nb_rx_hold = 0;
+}
+
+int
+nfp_net_rx_queue_setup(struct rte_eth_dev *dev,
+		       uint16_t queue_idx, uint16_t nb_desc,
+		       unsigned int socket_id,
+		       const struct rte_eth_rxconf *rx_conf,
+		       struct rte_mempool *mp)
+{
+	const struct rte_memzone *tz;
+	struct nfp_net_rxq *rxq;
+	struct nfp_net_hw *hw;
+	uint32_t rx_desc_sz;
+
+	hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+	PMD_INIT_FUNC_TRACE();
+
+	/* Validating number of descriptors */
+	rx_desc_sz = nb_desc * sizeof(struct nfp_net_rx_desc);
+	if (rx_desc_sz % NFP_ALIGN_RING_DESC != 0 ||
+	    nb_desc > NFP_NET_MAX_RX_DESC ||
+	    nb_desc < NFP_NET_MIN_RX_DESC) {
+		PMD_DRV_LOG(ERR, "Wrong nb_desc value");
+		return -EINVAL;
+	}
+
+	/*
+	 * Free memory prior to re-allocation if needed. This is the case after
+	 * calling nfp_net_stop
+	 */
+	if (dev->data->rx_queues[queue_idx]) {
+		nfp_net_rx_queue_release(dev->data->rx_queues[queue_idx]);
+		dev->data->rx_queues[queue_idx] = NULL;
+	}
+
+	/* Allocating rx queue data structure */
+	rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct nfp_net_rxq),
+				 RTE_CACHE_LINE_SIZE, socket_id);
+	if (rxq == NULL)
+		return -ENOMEM;
+
+	/* Hw queues mapping based on firmware configuration */
+	rxq->qidx = queue_idx;
+	rxq->fl_qcidx = queue_idx * hw->stride_rx;
+	rxq->rx_qcidx = rxq->fl_qcidx + (hw->stride_rx - 1);
+	rxq->qcp_fl = hw->rx_bar + NFP_QCP_QUEUE_OFF(rxq->fl_qcidx);
+	rxq->qcp_rx = hw->rx_bar + NFP_QCP_QUEUE_OFF(rxq->rx_qcidx);
+
+	/*
+	 * Tracking mbuf size for detecting a potential mbuf overflow due to
+	 * RX offset
+	 */
+	rxq->mem_pool = mp;
+	rxq->mbuf_size = rxq->mem_pool->elt_size;
+	rxq->mbuf_size -= (sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM);
+	hw->flbufsz = rxq->mbuf_size;
+
+	rxq->rx_count = nb_desc;
+	rxq->port_id = dev->data->port_id;
+	rxq->rx_free_thresh = rx_conf->rx_free_thresh;
+	rxq->drop_en = rx_conf->rx_drop_en;
+
+	/*
+	 * Allocate RX ring hardware descriptors. A memzone large enough to
+	 * handle the maximum ring size is allocated in order to allow for
+	 * resizing in later calls to the queue setup function.
+	 */
+	tz = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx,
+				   sizeof(struct nfp_net_rx_desc) *
+				   NFP_NET_MAX_RX_DESC, NFP_MEMZONE_ALIGN,
+				   socket_id);
+
+	if (tz == NULL) {
+		PMD_DRV_LOG(ERR, "Error allocating rx dma");
+		nfp_net_rx_queue_release(rxq);
+		return -ENOMEM;
+	}
+
+	/* Saving physical and virtual addresses for the RX ring */
+	rxq->dma = (uint64_t)tz->iova;
+	rxq->rxds = (struct nfp_net_rx_desc *)tz->addr;
+
+	/* mbuf pointers array for referencing mbufs linked to RX descriptors */
+	rxq->rxbufs = rte_zmalloc_socket("rxq->rxbufs",
+					 sizeof(*rxq->rxbufs) * nb_desc,
+					 RTE_CACHE_LINE_SIZE, socket_id);
+	if (rxq->rxbufs == NULL) {
+		nfp_net_rx_queue_release(rxq);
+		return -ENOMEM;
+	}
+
+	PMD_RX_LOG(DEBUG, "rxbufs=%p hw_ring=%p dma_addr=0x%" PRIx64,
+		   rxq->rxbufs, rxq->rxds, (unsigned long)rxq->dma);
+
+	nfp_net_reset_rx_queue(rxq);
+
+	dev->data->rx_queues[queue_idx] = rxq;
+	rxq->hw = hw;
+
+	/*
+	 * Telling the HW about the physical address of the RX ring and number
+	 * of descriptors in log2 format
+	 */
+	nn_cfg_writeq(hw, NFP_NET_CFG_RXR_ADDR(queue_idx), rxq->dma);
+	nn_cfg_writeb(hw, NFP_NET_CFG_RXR_SZ(queue_idx), rte_log2_u32(nb_desc));
+
+	return 0;
+}
+
+/*
+ * nfp_net_tx_free_bufs - Check for descriptors with a complete
+ * status
+ * @txq: TX queue to work with
+ * Returns number of descriptors freed
+ */
+static int
+nfp_net_tx_free_bufs(struct nfp_net_txq *txq)
+{
+	uint32_t qcp_rd_p;
+	int todo;
+
+	PMD_TX_LOG(DEBUG, "queue %u. Check for descriptor with a complete"
+		   " status", txq->qidx);
+
+	/* Work out how many packets have been sent */
+	qcp_rd_p = nfp_qcp_read(txq->qcp_q, NFP_QCP_READ_PTR);
+
+	if (qcp_rd_p == txq->rd_p) {
+		PMD_TX_LOG(DEBUG, "queue %u: It seems harrier is not sending "
+			   "packets (%u, %u)", txq->qidx,
+			   qcp_rd_p, txq->rd_p);
+		return 0;
+	}
+
+	if (qcp_rd_p > txq->rd_p)
+		todo = qcp_rd_p - txq->rd_p;
+	else
+		todo = qcp_rd_p + txq->tx_count - txq->rd_p;
+
+	PMD_TX_LOG(DEBUG, "qcp_rd_p %u, txq->rd_p: %u, qcp->rd_p: %u",
+		   qcp_rd_p, txq->rd_p, txq->rd_p);
+
+	if (todo == 0)
+		return todo;
+
+	txq->rd_p += todo;
+	if (unlikely(txq->rd_p >= txq->tx_count))
+		txq->rd_p -= txq->tx_count;
+
+	return todo;
+}
+
+static void
+nfp_net_tx_queue_release_mbufs(struct nfp_net_txq *txq)
+{
+	unsigned int i;
+
+	if (txq->txbufs == NULL)
+		return;
+
+	for (i = 0; i < txq->tx_count; i++) {
+		if (txq->txbufs[i].mbuf) {
+			rte_pktmbuf_free_seg(txq->txbufs[i].mbuf);
+			txq->txbufs[i].mbuf = NULL;
+		}
+	}
+}
+
+void
+nfp_net_tx_queue_release(void *tx_queue)
+{
+	struct nfp_net_txq *txq = tx_queue;
+
+	if (txq) {
+		nfp_net_tx_queue_release_mbufs(txq);
+		rte_free(txq->txbufs);
+		rte_free(txq);
+	}
+}
+
+void
+nfp_net_reset_tx_queue(struct nfp_net_txq *txq)
+{
+	nfp_net_tx_queue_release_mbufs(txq);
+	txq->wr_p = 0;
+	txq->rd_p = 0;
+}
+
+int
+nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
+		       uint16_t nb_desc, unsigned int socket_id,
+		       const struct rte_eth_txconf *tx_conf)
+{
+	const struct rte_memzone *tz;
+	struct nfp_net_txq *txq;
+	uint16_t tx_free_thresh;
+	struct nfp_net_hw *hw;
+	uint32_t tx_desc_sz;
+
+	hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+	PMD_INIT_FUNC_TRACE();
+
+	/* Validating number of descriptors */
+	tx_desc_sz = nb_desc * sizeof(struct nfp_net_tx_desc);
+	if (tx_desc_sz % NFP_ALIGN_RING_DESC != 0 ||
+	    nb_desc > NFP_NET_MAX_TX_DESC ||
+	    nb_desc < NFP_NET_MIN_TX_DESC) {
+		PMD_DRV_LOG(ERR, "Wrong nb_desc value");
+		return -EINVAL;
+	}
+
+	tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
+				    tx_conf->tx_free_thresh :
+				    DEFAULT_TX_FREE_THRESH);
+
+	if (tx_free_thresh > (nb_desc)) {
+		PMD_DRV_LOG(ERR,
+			"tx_free_thresh must be less than the number of TX "
+			"descriptors. (tx_free_thresh=%u port=%d "
+			"queue=%d)", (unsigned int)tx_free_thresh,
+			dev->data->port_id, (int)queue_idx);
+		return -(EINVAL);
+	}
+
+	/*
+	 * Free memory prior to re-allocation if needed. This is the case after
+	 * calling nfp_net_stop
+	 */
+	if (dev->data->tx_queues[queue_idx]) {
+		PMD_TX_LOG(DEBUG, "Freeing memory prior to re-allocation %d",
+			   queue_idx);
+		nfp_net_tx_queue_release(dev->data->tx_queues[queue_idx]);
+		dev->data->tx_queues[queue_idx] = NULL;
+	}
+
+	/* Allocating tx queue data structure */
+	txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct nfp_net_txq),
+				 RTE_CACHE_LINE_SIZE, socket_id);
+	if (txq == NULL) {
+		PMD_DRV_LOG(ERR, "Error allocating tx dma");
+		return -ENOMEM;
+	}
+
+	/*
+	 * Allocate TX ring hardware descriptors. A memzone large enough to
+	 * handle the maximum ring size is allocated in order to allow for
+	 * resizing in later calls to the queue setup function.
+	 */
+	tz = rte_eth_dma_zone_reserve(dev, "tx_ring", queue_idx,
+				   sizeof(struct nfp_net_tx_desc) *
+				   NFP_NET_MAX_TX_DESC, NFP_MEMZONE_ALIGN,
+				   socket_id);
+	if (tz == NULL) {
+		PMD_DRV_LOG(ERR, "Error allocating tx dma");
+		nfp_net_tx_queue_release(txq);
+		return -ENOMEM;
+	}
+
+	txq->tx_count = nb_desc;
+	txq->tx_free_thresh = tx_free_thresh;
+	txq->tx_pthresh = tx_conf->tx_thresh.pthresh;
+	txq->tx_hthresh = tx_conf->tx_thresh.hthresh;
+	txq->tx_wthresh = tx_conf->tx_thresh.wthresh;
+
+	/* queue mapping based on firmware configuration */
+	txq->qidx = queue_idx;
+	txq->tx_qcidx = queue_idx * hw->stride_tx;
+	txq->qcp_q = hw->tx_bar + NFP_QCP_QUEUE_OFF(txq->tx_qcidx);
+
+	txq->port_id = dev->data->port_id;
+
+	/* Saving physical and virtual addresses for the TX ring */
+	txq->dma = (uint64_t)tz->iova;
+	txq->txds = (struct nfp_net_tx_desc *)tz->addr;
+
+	/* mbuf pointers array for referencing mbufs linked to TX descriptors */
+	txq->txbufs = rte_zmalloc_socket("txq->txbufs",
+					 sizeof(*txq->txbufs) * nb_desc,
+					 RTE_CACHE_LINE_SIZE, socket_id);
+	if (txq->txbufs == NULL) {
+		nfp_net_tx_queue_release(txq);
+		return -ENOMEM;
+	}
+	PMD_TX_LOG(DEBUG, "txbufs=%p hw_ring=%p dma_addr=0x%" PRIx64,
+		   txq->txbufs, txq->txds, (unsigned long)txq->dma);
+
+	nfp_net_reset_tx_queue(txq);
+
+	dev->data->tx_queues[queue_idx] = txq;
+	txq->hw = hw;
+
+	/*
+	 * Telling the HW about the physical address of the TX ring and number
+	 * of descriptors in log2 format
+	 */
+	nn_cfg_writeq(hw, NFP_NET_CFG_TXR_ADDR(queue_idx), txq->dma);
+	nn_cfg_writeb(hw, NFP_NET_CFG_TXR_SZ(queue_idx), rte_log2_u32(nb_desc));
+
+	return 0;
+}
+
+/* Leaving always free descriptors for avoiding wrapping confusion */
+static inline
+uint32_t nfp_free_tx_desc(struct nfp_net_txq *txq)
+{
+	if (txq->wr_p >= txq->rd_p)
+		return txq->tx_count - (txq->wr_p - txq->rd_p) - 8;
+	else
+		return txq->rd_p - txq->wr_p - 8;
+}
+
+/*
+ * nfp_net_txq_full - Check if the TX queue free descriptors
+ * is below tx_free_threshold
+ *
+ * @txq: TX queue to check
+ *
+ * This function uses the host copy* of read/write pointers
+ */
+static inline
+uint32_t nfp_net_txq_full(struct nfp_net_txq *txq)
+{
+	return (nfp_free_tx_desc(txq) < txq->tx_free_thresh);
+}
+
+/* nfp_net_tx_tso - Set TX descriptor for TSO */
+static inline void
+nfp_net_tx_tso(struct nfp_net_txq *txq, struct nfp_net_tx_desc *txd,
+	       struct rte_mbuf *mb)
+{
+	uint64_t ol_flags;
+	struct nfp_net_hw *hw = txq->hw;
+
+	if (!(hw->cap & NFP_NET_CFG_CTRL_LSO_ANY))
+		goto clean_txd;
+
+	ol_flags = mb->ol_flags;
+
+	if (!(ol_flags & PKT_TX_TCP_SEG))
+		goto clean_txd;
+
+	txd->l3_offset = mb->l2_len;
+	txd->l4_offset = mb->l2_len + mb->l3_len;
+	txd->lso_hdrlen = mb->l2_len + mb->l3_len + mb->l4_len;
+	txd->mss = rte_cpu_to_le_16(mb->tso_segsz);
+	txd->flags = PCIE_DESC_TX_LSO;
+	return;
+
+clean_txd:
+	txd->flags = 0;
+	txd->l3_offset = 0;
+	txd->l4_offset = 0;
+	txd->lso_hdrlen = 0;
+	txd->mss = 0;
+}
+
+/* nfp_net_tx_cksum - Set TX CSUM offload flags in TX descriptor */
+static inline void
+nfp_net_tx_cksum(struct nfp_net_txq *txq, struct nfp_net_tx_desc *txd,
+		 struct rte_mbuf *mb)
+{
+	uint64_t ol_flags;
+	struct nfp_net_hw *hw = txq->hw;
+
+	if (!(hw->cap & NFP_NET_CFG_CTRL_TXCSUM))
+		return;
+
+	ol_flags = mb->ol_flags;
+
+	/* IPv6 does not need checksum */
+	if (ol_flags & PKT_TX_IP_CKSUM)
+		txd->flags |= PCIE_DESC_TX_IP4_CSUM;
+
+	switch (ol_flags & PKT_TX_L4_MASK) {
+	case PKT_TX_UDP_CKSUM:
+		txd->flags |= PCIE_DESC_TX_UDP_CSUM;
+		break;
+	case PKT_TX_TCP_CKSUM:
+		txd->flags |= PCIE_DESC_TX_TCP_CSUM;
+		break;
+	}
+
+	if (ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK))
+		txd->flags |= PCIE_DESC_TX_CSUM;
+}
+
+uint16_t
+nfp_net_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
+{
+	struct nfp_net_txq *txq;
+	struct nfp_net_hw *hw;
+	struct nfp_net_tx_desc *txds, txd;
+	struct rte_mbuf *pkt;
+	uint64_t dma_addr;
+	int pkt_size, dma_size;
+	uint16_t free_descs, issued_descs;
+	struct rte_mbuf **lmbuf;
+	int i;
+
+	txq = tx_queue;
+	hw = txq->hw;
+	txds = &txq->txds[txq->wr_p];
+
+	PMD_TX_LOG(DEBUG, "working for queue %u at pos %d and %u packets",
+		   txq->qidx, txq->wr_p, nb_pkts);
+
+	if ((nfp_free_tx_desc(txq) < nb_pkts) || (nfp_net_txq_full(txq)))
+		nfp_net_tx_free_bufs(txq);
+
+	free_descs = (uint16_t)nfp_free_tx_desc(txq);
+	if (unlikely(free_descs == 0))
+		return 0;
+
+	pkt = *tx_pkts;
+
+	i = 0;
+	issued_descs = 0;
+	PMD_TX_LOG(DEBUG, "queue: %u. Sending %u packets",
+		   txq->qidx, nb_pkts);
+	/* Sending packets */
+	while ((i < nb_pkts) && free_descs) {
+		/* Grabbing the mbuf linked to the current descriptor */
+		lmbuf = &txq->txbufs[txq->wr_p].mbuf;
+		/* Warming the cache for releasing the mbuf later on */
+		RTE_MBUF_PREFETCH_TO_FREE(*lmbuf);
+
+		pkt = *(tx_pkts + i);
+
+		if (unlikely(pkt->nb_segs > 1 &&
+			     !(hw->cap & NFP_NET_CFG_CTRL_GATHER))) {
+			PMD_INIT_LOG(INFO, "NFP_NET_CFG_CTRL_GATHER not set");
+			rte_panic("Multisegment packet unsupported\n");
+		}
+
+		/* Checking if we have enough descriptors */
+		if (unlikely(pkt->nb_segs > free_descs))
+			goto xmit_end;
+
+		/*
+		 * Checksum and VLAN flags just in the first descriptor for a
+		 * multisegment packet, but TSO info needs to be in all of them.
+		 */
+		txd.data_len = pkt->pkt_len;
+		nfp_net_tx_tso(txq, &txd, pkt);
+		nfp_net_tx_cksum(txq, &txd, pkt);
+
+		if ((pkt->ol_flags & PKT_TX_VLAN_PKT) &&
+		    (hw->cap & NFP_NET_CFG_CTRL_TXVLAN)) {
+			txd.flags |= PCIE_DESC_TX_VLAN;
+			txd.vlan = pkt->vlan_tci;
+		}
+
+		/*
+		 * mbuf data_len is the data in one segment and pkt_len data
+		 * in the whole packet. When the packet is just one segment,
+		 * then data_len = pkt_len
+		 */
+		pkt_size = pkt->pkt_len;
+
+		while (pkt) {
+			/* Copying TSO, VLAN and cksum info */
+			*txds = txd;
+
+			/* Releasing mbuf used by this descriptor previously*/
+			if (*lmbuf)
+				rte_pktmbuf_free_seg(*lmbuf);
+
+			/*
+			 * Linking mbuf with descriptor for being released
+			 * next time descriptor is used
+			 */
+			*lmbuf = pkt;
+
+			dma_size = pkt->data_len;
+			dma_addr = rte_mbuf_data_iova(pkt);
+			PMD_TX_LOG(DEBUG, "Working with mbuf at dma address:"
+				   "%" PRIx64 "", dma_addr);
+
+			/* Filling descriptors fields */
+			txds->dma_len = dma_size;
+			txds->data_len = txd.data_len;
+			txds->dma_addr_hi = (dma_addr >> 32) & 0xff;
+			txds->dma_addr_lo = (dma_addr & 0xffffffff);
+			ASSERT(free_descs > 0);
+			free_descs--;
+
+			txq->wr_p++;
+			if (unlikely(txq->wr_p == txq->tx_count)) /* wrapping?*/
+				txq->wr_p = 0;
+
+			pkt_size -= dma_size;
+
+			/*
+			 * Making the EOP, packets with just one segment
+			 * the priority
+			 */
+			if (likely(!pkt_size))
+				txds->offset_eop = PCIE_DESC_TX_EOP;
+			else
+				txds->offset_eop = 0;
+
+			pkt = pkt->next;
+			/* Referencing next free TX descriptor */
+			txds = &txq->txds[txq->wr_p];
+			lmbuf = &txq->txbufs[txq->wr_p].mbuf;
+			issued_descs++;
+		}
+		i++;
+	}
+
+xmit_end:
+	/* Increment write pointers. Force memory write before we let HW know */
+	rte_wmb();
+	nfp_qcp_ptr_add(txq->qcp_q, NFP_QCP_WRITE_PTR, issued_descs);
+
+	return i;
+}
diff --git a/drivers/net/nfp/nfp_rxtx.h b/drivers/net/nfp/nfp_rxtx.h
index 41a3a4b4e7..d2d0f3f175 100644
--- a/drivers/net/nfp/nfp_rxtx.h
+++ b/drivers/net/nfp/nfp_rxtx.h
@@ -17,6 +17,14 @@
 #include <linux/types.h>
 #include <rte_io.h>
 
+#define NFP_DESC_META_LEN(d) ((d)->rxd.meta_len_dd & PCIE_DESC_RX_META_LEN_MASK)
+
+#define NFP_HASH_OFFSET      ((uint8_t *)mbuf->buf_addr + mbuf->data_off - 4)
+#define NFP_HASH_TYPE_OFFSET ((uint8_t *)mbuf->buf_addr + mbuf->data_off - 8)
+
+#define RTE_MBUF_DMA_ADDR_DEFAULT(mb) \
+	((uint64_t)((mb)->buf_iova + RTE_PKTMBUF_HEADROOM))
+
 /*
  * The maximum number of descriptors is limited by design as
  * DPDK uses uint16_t variables for these values
@@ -266,6 +274,25 @@ struct nfp_net_rxq {
 	int rx_qcidx;
 } __rte_aligned(64);
 
+int nfp_net_rx_freelist_setup(struct rte_eth_dev *dev);
+uint32_t nfp_net_rx_queue_count(struct rte_eth_dev *dev,
+				       uint16_t queue_idx);
+uint16_t nfp_net_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
+				  uint16_t nb_pkts);
+void nfp_net_rx_queue_release(void *rxq);
+void nfp_net_reset_rx_queue(struct nfp_net_rxq *rxq);
+int nfp_net_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
+				  uint16_t nb_desc, unsigned int socket_id,
+				  const struct rte_eth_rxconf *rx_conf,
+				  struct rte_mempool *mp);
+void nfp_net_tx_queue_release(void *txq);
+void nfp_net_reset_tx_queue(struct nfp_net_txq *txq);
+int nfp_net_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
+				  uint16_t nb_desc, unsigned int socket_id,
+				  const struct rte_eth_txconf *tx_conf);
+uint16_t nfp_net_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
+				  uint16_t nb_pkts);
+
 #endif /* _NFP_RXTX_H_ */
 /*
  * Local variables:
-- 
2.30.1 (Apple Git-130)