1 files changed, 97 insertions, 456 deletions

diff --git a/drivers/net/ethernet/intel/iavf/iavf_txrx.c b/drivers/net/ethernet/intel/iavf/iavf_txrx.c
index b71484c87a84..26b424fd6718 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_txrx.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_txrx.c
@@ -2,6 +2,7 @@
 /* Copyright(c) 2013 - 2018 Intel Corporation. */
 
 #include <linux/bitfield.h>
+#include <linux/net/intel/libie/rx.h>
 #include <linux/prefetch.h>
 
 #include "iavf.h"
@@ -184,7 +185,7 @@ void iavf_detect_recover_hung(struct iavf_vsi *vsi)
 			 * pending work.
 			 */
 			packets = tx_ring->stats.packets & INT_MAX;
-			if (tx_ring->tx_stats.prev_pkt_ctr == packets) {
+			if (tx_ring->prev_pkt_ctr == packets) {
 				iavf_force_wb(vsi, tx_ring->q_vector);
 				continue;
 			}
@@ -193,7 +194,7 @@ void iavf_detect_recover_hung(struct iavf_vsi *vsi)
 			 * to iavf_get_tx_pending()
 			 */
 			smp_rmb();
-			tx_ring->tx_stats.prev_pkt_ctr =
+			tx_ring->prev_pkt_ctr =
 			  iavf_get_tx_pending(tx_ring, true) ? packets : -1;
 		}
 	}
@@ -319,7 +320,7 @@ static bool iavf_clean_tx_irq(struct iavf_vsi *vsi,
 		    ((j / WB_STRIDE) == 0) && (j > 0) &&
 		    !test_bit(__IAVF_VSI_DOWN, vsi->state) &&
 		    (IAVF_DESC_UNUSED(tx_ring) != tx_ring->count))
-			tx_ring->arm_wb = true;
+			tx_ring->flags |= IAVF_TXR_FLAGS_ARM_WB;
 	}
 
 	/* notify netdev of completed buffers */
@@ -674,7 +675,7 @@ int iavf_setup_tx_descriptors(struct iavf_ring *tx_ring)
 
 	tx_ring->next_to_use = 0;
 	tx_ring->next_to_clean = 0;
-	tx_ring->tx_stats.prev_pkt_ctr = -1;
+	tx_ring->prev_pkt_ctr = -1;
 	return 0;
 
 err:
@@ -689,11 +690,8 @@ err:
  **/
 static void iavf_clean_rx_ring(struct iavf_ring *rx_ring)
 {
-	unsigned long bi_size;
-	u16 i;
-
 	/* ring already cleared, nothing to do */
-	if (!rx_ring->rx_bi)
+	if (!rx_ring->rx_fqes)
 		return;
 
 	if (rx_ring->skb) {
@@ -701,41 +699,16 @@ static void iavf_clean_rx_ring(struct iavf_ring *rx_ring)
 		rx_ring->skb = NULL;
 	}
 
-	/* Free all the Rx ring sk_buffs */
-	for (i = 0; i < rx_ring->count; i++) {
-		struct iavf_rx_buffer *rx_bi = &rx_ring->rx_bi[i];
+	/* Free all the Rx ring buffers */
+	for (u32 i = rx_ring->next_to_clean; i != rx_ring->next_to_use; ) {
+		const struct libeth_fqe *rx_fqes = &rx_ring->rx_fqes[i];
 
-		if (!rx_bi->page)
-			continue;
+		page_pool_put_full_page(rx_ring->pp, rx_fqes->page, false);
 
-		/* Invalidate cache lines that may have been written to by
-		 * device so that we avoid corrupting memory.
-		 */
-		dma_sync_single_range_for_cpu(rx_ring->dev,
-					      rx_bi->dma,
-					      rx_bi->page_offset,
-					      rx_ring->rx_buf_len,
-					      DMA_FROM_DEVICE);
-
-		/* free resources associated with mapping */
-		dma_unmap_page_attrs(rx_ring->dev, rx_bi->dma,
-				     iavf_rx_pg_size(rx_ring),
-				     DMA_FROM_DEVICE,
-				     IAVF_RX_DMA_ATTR);
-
-		__page_frag_cache_drain(rx_bi->page, rx_bi->pagecnt_bias);
-
-		rx_bi->page = NULL;
-		rx_bi->page_offset = 0;
+		if (unlikely(++i == rx_ring->count))
+			i = 0;
 	}
 
-	bi_size = sizeof(struct iavf_rx_buffer) * rx_ring->count;
-	memset(rx_ring->rx_bi, 0, bi_size);
-
-	/* Zero out the descriptor ring */
-	memset(rx_ring->desc, 0, rx_ring->size);
-
-	rx_ring->next_to_alloc = 0;
 	rx_ring->next_to_clean = 0;
 	rx_ring->next_to_use = 0;
 }
@@ -748,15 +721,22 @@ static void iavf_clean_rx_ring(struct iavf_ring *rx_ring)
  **/
 void iavf_free_rx_resources(struct iavf_ring *rx_ring)
 {
+	struct libeth_fq fq = {
+		.fqes	= rx_ring->rx_fqes,
+		.pp	= rx_ring->pp,
+	};
+
 	iavf_clean_rx_ring(rx_ring);
-	kfree(rx_ring->rx_bi);
-	rx_ring->rx_bi = NULL;
 
 	if (rx_ring->desc) {
-		dma_free_coherent(rx_ring->dev, rx_ring->size,
+		dma_free_coherent(rx_ring->pp->p.dev, rx_ring->size,
 				  rx_ring->desc, rx_ring->dma);
 		rx_ring->desc = NULL;
 	}
+
+	libeth_rx_fq_destroy(&fq);
+	rx_ring->rx_fqes = NULL;
+	rx_ring->pp = NULL;
 }
 
 /**
@@ -767,38 +747,46 @@ void iavf_free_rx_resources(struct iavf_ring *rx_ring)
  **/
 int iavf_setup_rx_descriptors(struct iavf_ring *rx_ring)
 {
-	struct device *dev = rx_ring->dev;
-	int bi_size;
-
-	/* warn if we are about to overwrite the pointer */
-	WARN_ON(rx_ring->rx_bi);
-	bi_size = sizeof(struct iavf_rx_buffer) * rx_ring->count;
-	rx_ring->rx_bi = kzalloc(bi_size, GFP_KERNEL);
-	if (!rx_ring->rx_bi)
-		goto err;
+	struct libeth_fq fq = {
+		.count		= rx_ring->count,
+		.buf_len	= LIBIE_MAX_RX_BUF_LEN,
+		.nid		= NUMA_NO_NODE,
+	};
+	int ret;
+
+	ret = libeth_rx_fq_create(&fq, &rx_ring->q_vector->napi);
+	if (ret)
+		return ret;
+
+	rx_ring->pp = fq.pp;
+	rx_ring->rx_fqes = fq.fqes;
+	rx_ring->truesize = fq.truesize;
+	rx_ring->rx_buf_len = fq.buf_len;
 
 	u64_stats_init(&rx_ring->syncp);
 
 	/* Round up to nearest 4K */
 	rx_ring->size = rx_ring->count * sizeof(union iavf_32byte_rx_desc);
 	rx_ring->size = ALIGN(rx_ring->size, 4096);
-	rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
+	rx_ring->desc = dma_alloc_coherent(fq.pp->p.dev, rx_ring->size,
 					   &rx_ring->dma, GFP_KERNEL);
 
 	if (!rx_ring->desc) {
-		dev_info(dev, "Unable to allocate memory for the Rx descriptor ring, size=%d\n",
+		dev_info(fq.pp->p.dev, "Unable to allocate memory for the Rx descriptor ring, size=%d\n",
 			 rx_ring->size);
 		goto err;
 	}
 
-	rx_ring->next_to_alloc = 0;
 	rx_ring->next_to_clean = 0;
 	rx_ring->next_to_use = 0;
 
 	return 0;
+
 err:
-	kfree(rx_ring->rx_bi);
-	rx_ring->rx_bi = NULL;
+	libeth_rx_fq_destroy(&fq);
+	rx_ring->rx_fqes = NULL;
+	rx_ring->pp = NULL;
+
 	return -ENOMEM;
 }
 
@@ -811,9 +799,6 @@ static void iavf_release_rx_desc(struct iavf_ring *rx_ring, u32 val)
 {
 	rx_ring->next_to_use = val;
 
-	/* update next to alloc since we have filled the ring */
-	rx_ring->next_to_alloc = val;
-
 	/* Force memory writes to complete before letting h/w
 	 * know there are new descriptors to fetch.  (Only
 	 * applicable for weak-ordered memory model archs,
@@ -824,69 +809,6 @@ static void iavf_release_rx_desc(struct iavf_ring *rx_ring, u32 val)
 }
 
 /**
- * iavf_rx_offset - Return expected offset into page to access data
- * @rx_ring: Ring we are requesting offset of
- *
- * Returns the offset value for ring into the data buffer.
- */
-static unsigned int iavf_rx_offset(struct iavf_ring *rx_ring)
-{
-	return ring_uses_build_skb(rx_ring) ? IAVF_SKB_PAD : 0;
-}
-
-/**
- * iavf_alloc_mapped_page - recycle or make a new page
- * @rx_ring: ring to use
- * @bi: rx_buffer struct to modify
- *
- * Returns true if the page was successfully allocated or
- * reused.
- **/
-static bool iavf_alloc_mapped_page(struct iavf_ring *rx_ring,
-				   struct iavf_rx_buffer *bi)
-{
-	struct page *page = bi->page;
-	dma_addr_t dma;
-
-	/* since we are recycling buffers we should seldom need to alloc */
-	if (likely(page)) {
-		rx_ring->rx_stats.page_reuse_count++;
-		return true;
-	}
-
-	/* alloc new page for storage */
-	page = dev_alloc_pages(iavf_rx_pg_order(rx_ring));
-	if (unlikely(!page)) {
-		rx_ring->rx_stats.alloc_page_failed++;
-		return false;
-	}
-
-	/* map page for use */
-	dma = dma_map_page_attrs(rx_ring->dev, page, 0,
-				 iavf_rx_pg_size(rx_ring),
-				 DMA_FROM_DEVICE,
-				 IAVF_RX_DMA_ATTR);
-
-	/* if mapping failed free memory back to system since
-	 * there isn't much point in holding memory we can't use
-	 */
-	if (dma_mapping_error(rx_ring->dev, dma)) {
-		__free_pages(page, iavf_rx_pg_order(rx_ring));
-		rx_ring->rx_stats.alloc_page_failed++;
-		return false;
-	}
-
-	bi->dma = dma;
-	bi->page = page;
-	bi->page_offset = iavf_rx_offset(rx_ring);
-
-	/* initialize pagecnt_bias to 1 representing we fully own page */
-	bi->pagecnt_bias = 1;
-
-	return true;
-}
-
-/**
  * iavf_receive_skb - Send a completed packet up the stack
  * @rx_ring:  rx ring in play
  * @skb: packet to send up
@@ -916,38 +838,37 @@ static void iavf_receive_skb(struct iavf_ring *rx_ring,
  **/
 bool iavf_alloc_rx_buffers(struct iavf_ring *rx_ring, u16 cleaned_count)
 {
+	const struct libeth_fq_fp fq = {
+		.pp		= rx_ring->pp,
+		.fqes		= rx_ring->rx_fqes,
+		.truesize	= rx_ring->truesize,
+		.count		= rx_ring->count,
+	};
 	u16 ntu = rx_ring->next_to_use;
 	union iavf_rx_desc *rx_desc;
-	struct iavf_rx_buffer *bi;
 
 	/* do nothing if no valid netdev defined */
 	if (!rx_ring->netdev || !cleaned_count)
 		return false;
 
 	rx_desc = IAVF_RX_DESC(rx_ring, ntu);
-	bi = &rx_ring->rx_bi[ntu];
 
 	do {
-		if (!iavf_alloc_mapped_page(rx_ring, bi))
-			goto no_buffers;
+		dma_addr_t addr;
 
-		/* sync the buffer for use by the device */
-		dma_sync_single_range_for_device(rx_ring->dev, bi->dma,
-						 bi->page_offset,
-						 rx_ring->rx_buf_len,
-						 DMA_FROM_DEVICE);
+		addr = libeth_rx_alloc(&fq, ntu);
+		if (addr == DMA_MAPPING_ERROR)
+			goto no_buffers;
 
 		/* Refresh the desc even if buffer_addrs didn't change
 		 * because each write-back erases this info.
 		 */
-		rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset);
+		rx_desc->read.pkt_addr = cpu_to_le64(addr);
 
 		rx_desc++;
-		bi++;
 		ntu++;
 		if (unlikely(ntu == rx_ring->count)) {
 			rx_desc = IAVF_RX_DESC(rx_ring, 0);
-			bi = rx_ring->rx_bi;
 			ntu = 0;
 		}
 
@@ -966,6 +887,8 @@ no_buffers:
 	if (rx_ring->next_to_use != ntu)
 		iavf_release_rx_desc(rx_ring, ntu);
 
+	rx_ring->rx_stats.alloc_page_failed++;
+
 	/* make sure to come back via polling to try again after
 	 * allocation failure
 	 */
@@ -982,38 +905,30 @@ static void iavf_rx_checksum(struct iavf_vsi *vsi,
 			     struct sk_buff *skb,
 			     union iavf_rx_desc *rx_desc)
 {
-	struct iavf_rx_ptype_decoded decoded;
+	struct libeth_rx_pt decoded;
 	u32 rx_error, rx_status;
 	bool ipv4, ipv6;
 	u8 ptype;
 	u64 qword;
 
-	qword = le64_to_cpu(rx_desc->wb.qword1.status_error_len);
-	ptype = FIELD_GET(IAVF_RXD_QW1_PTYPE_MASK, qword);
-	rx_error = FIELD_GET(IAVF_RXD_QW1_ERROR_MASK, qword);
-	rx_status = FIELD_GET(IAVF_RXD_QW1_STATUS_MASK, qword);
-	decoded = decode_rx_desc_ptype(ptype);
-
 	skb->ip_summed = CHECKSUM_NONE;
 
-	skb_checksum_none_assert(skb);
+	qword = le64_to_cpu(rx_desc->wb.qword1.status_error_len);
+	ptype = FIELD_GET(IAVF_RXD_QW1_PTYPE_MASK, qword);
 
-	/* Rx csum enabled and ip headers found? */
-	if (!(vsi->netdev->features & NETIF_F_RXCSUM))
+	decoded = libie_rx_pt_parse(ptype);
+	if (!libeth_rx_pt_has_checksum(vsi->netdev, decoded))
 		return;
 
+	rx_error = FIELD_GET(IAVF_RXD_QW1_ERROR_MASK, qword);
+	rx_status = FIELD_GET(IAVF_RXD_QW1_STATUS_MASK, qword);
+
 	/* did the hardware decode the packet and checksum? */
 	if (!(rx_status & BIT(IAVF_RX_DESC_STATUS_L3L4P_SHIFT)))
 		return;
 
-	/* both known and outer_ip must be set for the below code to work */
-	if (!(decoded.known && decoded.outer_ip))
-		return;
-
-	ipv4 = (decoded.outer_ip == IAVF_RX_PTYPE_OUTER_IP) &&
-	       (decoded.outer_ip_ver == IAVF_RX_PTYPE_OUTER_IPV4);
-	ipv6 = (decoded.outer_ip == IAVF_RX_PTYPE_OUTER_IP) &&
-	       (decoded.outer_ip_ver == IAVF_RX_PTYPE_OUTER_IPV6);
+	ipv4 = libeth_rx_pt_get_ip_ver(decoded) == LIBETH_RX_PT_OUTER_IPV4;
+	ipv6 = libeth_rx_pt_get_ip_ver(decoded) == LIBETH_RX_PT_OUTER_IPV6;
 
 	if (ipv4 &&
 	    (rx_error & (BIT(IAVF_RX_DESC_ERROR_IPE_SHIFT) |
@@ -1037,17 +952,7 @@ static void iavf_rx_checksum(struct iavf_vsi *vsi,
 	if (rx_error & BIT(IAVF_RX_DESC_ERROR_PPRS_SHIFT))
 		return;
 
-	/* Only report checksum unnecessary for TCP, UDP, or SCTP */
-	switch (decoded.inner_prot) {
-	case IAVF_RX_PTYPE_INNER_PROT_TCP:
-	case IAVF_RX_PTYPE_INNER_PROT_UDP:
-	case IAVF_RX_PTYPE_INNER_PROT_SCTP:
-		skb->ip_summed = CHECKSUM_UNNECESSARY;
-		fallthrough;
-	default:
-		break;
-	}
-
+	skb->ip_summed = CHECKSUM_UNNECESSARY;
 	return;
 
 checksum_fail:
@@ -1055,29 +960,6 @@ checksum_fail:
 }
 
 /**
- * iavf_ptype_to_htype - get a hash type
- * @ptype: the ptype value from the descriptor
- *
- * Returns a hash type to be used by skb_set_hash
- **/
-static int iavf_ptype_to_htype(u8 ptype)
-{
-	struct iavf_rx_ptype_decoded decoded = decode_rx_desc_ptype(ptype);
-
-	if (!decoded.known)
-		return PKT_HASH_TYPE_NONE;
-
-	if (decoded.outer_ip == IAVF_RX_PTYPE_OUTER_IP &&
-	    decoded.payload_layer == IAVF_RX_PTYPE_PAYLOAD_LAYER_PAY4)
-		return PKT_HASH_TYPE_L4;
-	else if (decoded.outer_ip == IAVF_RX_PTYPE_OUTER_IP &&
-		 decoded.payload_layer == IAVF_RX_PTYPE_PAYLOAD_LAYER_PAY3)
-		return PKT_HASH_TYPE_L3;
-	else
-		return PKT_HASH_TYPE_L2;
-}
-
-/**
  * iavf_rx_hash - set the hash value in the skb
  * @ring: descriptor ring
  * @rx_desc: specific descriptor
@@ -1089,17 +971,19 @@ static void iavf_rx_hash(struct iavf_ring *ring,
 			 struct sk_buff *skb,
 			 u8 rx_ptype)
 {
+	struct libeth_rx_pt decoded;
 	u32 hash;
 	const __le64 rss_mask =
 		cpu_to_le64((u64)IAVF_RX_DESC_FLTSTAT_RSS_HASH <<
 			    IAVF_RX_DESC_STATUS_FLTSTAT_SHIFT);
 
-	if (!(ring->netdev->features & NETIF_F_RXHASH))
+	decoded = libie_rx_pt_parse(rx_ptype);
+	if (!libeth_rx_pt_has_hash(ring->netdev, decoded))
 		return;
 
 	if ((rx_desc->wb.qword1.status_error_len & rss_mask) == rss_mask) {
 		hash = le32_to_cpu(rx_desc->wb.qword0.hi_dword.rss);
-		skb_set_hash(skb, hash, iavf_ptype_to_htype(rx_ptype));
+		libeth_rx_pt_set_hash(skb, hash, decoded);
 	}
 }
 
@@ -1152,95 +1036,9 @@ static bool iavf_cleanup_headers(struct iavf_ring *rx_ring, struct sk_buff *skb)
 }
 
 /**
- * iavf_reuse_rx_page - page flip buffer and store it back on the ring
- * @rx_ring: rx descriptor ring to store buffers on
- * @old_buff: donor buffer to have page reused
- *
- * Synchronizes page for reuse by the adapter
- **/
-static void iavf_reuse_rx_page(struct iavf_ring *rx_ring,
-			       struct iavf_rx_buffer *old_buff)
-{
-	struct iavf_rx_buffer *new_buff;
-	u16 nta = rx_ring->next_to_alloc;
-
-	new_buff = &rx_ring->rx_bi[nta];
-
-	/* update, and store next to alloc */
-	nta++;
-	rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0;
-
-	/* transfer page from old buffer to new buffer */
-	new_buff->dma		= old_buff->dma;
-	new_buff->page		= old_buff->page;
-	new_buff->page_offset	= old_buff->page_offset;
-	new_buff->pagecnt_bias	= old_buff->pagecnt_bias;
-}
-
-/**
- * iavf_can_reuse_rx_page - Determine if this page can be reused by
- * the adapter for another receive
- *
- * @rx_buffer: buffer containing the page
- *
- * If page is reusable, rx_buffer->page_offset is adjusted to point to
- * an unused region in the page.
- *
- * For small pages, @truesize will be a constant value, half the size
- * of the memory at page.  We'll attempt to alternate between high and
- * low halves of the page, with one half ready for use by the hardware
- * and the other half being consumed by the stack.  We use the page
- * ref count to determine whether the stack has finished consuming the
- * portion of this page that was passed up with a previous packet.  If
- * the page ref count is >1, we'll assume the "other" half page is
- * still busy, and this page cannot be reused.
- *
- * For larger pages, @truesize will be the actual space used by the
- * received packet (adjusted upward to an even multiple of the cache
- * line size).  This will advance through the page by the amount
- * actually consumed by the received packets while there is still
- * space for a buffer.  Each region of larger pages will be used at
- * most once, after which the page will not be reused.
- *
- * In either case, if the page is reusable its refcount is increased.
- **/
-static bool iavf_can_reuse_rx_page(struct iavf_rx_buffer *rx_buffer)
-{
-	unsigned int pagecnt_bias = rx_buffer->pagecnt_bias;
-	struct page *page = rx_buffer->page;
-
-	/* Is any reuse possible? */
-	if (!dev_page_is_reusable(page))
-		return false;
-
-#if (PAGE_SIZE < 8192)
-	/* if we are only owner of page we can reuse it */
-	if (unlikely((page_count(page) - pagecnt_bias) > 1))
-		return false;
-#else
-#define IAVF_LAST_OFFSET \
-	(SKB_WITH_OVERHEAD(PAGE_SIZE) - IAVF_RXBUFFER_2048)
-	if (rx_buffer->page_offset > IAVF_LAST_OFFSET)
-		return false;
-#endif
-
-	/* If we have drained the page fragment pool we need to update
-	 * the pagecnt_bias and page count so that we fully restock the
-	 * number of references the driver holds.
-	 */
-	if (unlikely(!pagecnt_bias)) {
-		page_ref_add(page, USHRT_MAX);
-		rx_buffer->pagecnt_bias = USHRT_MAX;
-	}
-
-	return true;
-}
-
-/**
  * iavf_add_rx_frag - Add contents of Rx buffer to sk_buff
- * @rx_ring: rx descriptor ring to transact packets on
- * @rx_buffer: buffer containing page to add
  * @skb: sk_buff to place the data into
+ * @rx_buffer: buffer containing page to add
  * @size: packet length from rx_desc
  *
  * This function will add the data contained in rx_buffer->page to the skb.
@@ -1248,206 +1046,50 @@ static bool iavf_can_reuse_rx_page(struct iavf_rx_buffer *rx_buffer)
  *
  * The function will then update the page offset.
  **/
-static void iavf_add_rx_frag(struct iavf_ring *rx_ring,
-			     struct iavf_rx_buffer *rx_buffer,
-			     struct sk_buff *skb,
+static void iavf_add_rx_frag(struct sk_buff *skb,
+			     const struct libeth_fqe *rx_buffer,
 			     unsigned int size)
 {
-#if (PAGE_SIZE < 8192)
-	unsigned int truesize = iavf_rx_pg_size(rx_ring) / 2;
-#else
-	unsigned int truesize = SKB_DATA_ALIGN(size + iavf_rx_offset(rx_ring));
-#endif
-
-	if (!size)
-		return;
+	u32 hr = rx_buffer->page->pp->p.offset;
 
 	skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page,
-			rx_buffer->page_offset, size, truesize);
-
-	/* page is being used so we must update the page offset */
-#if (PAGE_SIZE < 8192)
-	rx_buffer->page_offset ^= truesize;
-#else
-	rx_buffer->page_offset += truesize;
-#endif
-}
-
-/**
- * iavf_get_rx_buffer - Fetch Rx buffer and synchronize data for use
- * @rx_ring: rx descriptor ring to transact packets on
- * @size: size of buffer to add to skb
- *
- * This function will pull an Rx buffer from the ring and synchronize it
- * for use by the CPU.
- */
-static struct iavf_rx_buffer *iavf_get_rx_buffer(struct iavf_ring *rx_ring,
-						 const unsigned int size)
-{
-	struct iavf_rx_buffer *rx_buffer;
-
-	rx_buffer = &rx_ring->rx_bi[rx_ring->next_to_clean];
-	prefetchw(rx_buffer->page);
-	if (!size)
-		return rx_buffer;
-
-	/* we are reusing so sync this buffer for CPU use */
-	dma_sync_single_range_for_cpu(rx_ring->dev,
-				      rx_buffer->dma,
-				      rx_buffer->page_offset,
-				      size,
-				      DMA_FROM_DEVICE);
-
-	/* We have pulled a buffer for use, so decrement pagecnt_bias */
-	rx_buffer->pagecnt_bias--;
-
-	return rx_buffer;
-}
-
-/**
- * iavf_construct_skb - Allocate skb and populate it
- * @rx_ring: rx descriptor ring to transact packets on
- * @rx_buffer: rx buffer to pull data from
- * @size: size of buffer to add to skb
- *
- * This function allocates an skb.  It then populates it with the page
- * data from the current receive descriptor, taking care to set up the
- * skb correctly.
- */
-static struct sk_buff *iavf_construct_skb(struct iavf_ring *rx_ring,
-					  struct iavf_rx_buffer *rx_buffer,
-					  unsigned int size)
-{
-	void *va;
-#if (PAGE_SIZE < 8192)
-	unsigned int truesize = iavf_rx_pg_size(rx_ring) / 2;
-#else
-	unsigned int truesize = SKB_DATA_ALIGN(size);
-#endif
-	unsigned int headlen;
-	struct sk_buff *skb;
-
-	if (!rx_buffer)
-		return NULL;
-	/* prefetch first cache line of first page */
-	va = page_address(rx_buffer->page) + rx_buffer->page_offset;
-	net_prefetch(va);
-
-	/* allocate a skb to store the frags */
-	skb = __napi_alloc_skb(&rx_ring->q_vector->napi,
-			       IAVF_RX_HDR_SIZE,
-			       GFP_ATOMIC | __GFP_NOWARN);
-	if (unlikely(!skb))
-		return NULL;
-
-	/* Determine available headroom for copy */
-	headlen = size;
-	if (headlen > IAVF_RX_HDR_SIZE)
-		headlen = eth_get_headlen(skb->dev, va, IAVF_RX_HDR_SIZE);
-
-	/* align pull length to size of long to optimize memcpy performance */
-	memcpy(__skb_put(skb, headlen), va, ALIGN(headlen, sizeof(long)));
-
-	/* update all of the pointers */
-	size -= headlen;
-	if (size) {
-		skb_add_rx_frag(skb, 0, rx_buffer->page,
-				rx_buffer->page_offset + headlen,
-				size, truesize);
-
-		/* buffer is used by skb, update page_offset */
-#if (PAGE_SIZE < 8192)
-		rx_buffer->page_offset ^= truesize;
-#else
-		rx_buffer->page_offset += truesize;
-#endif
-	} else {
-		/* buffer is unused, reset bias back to rx_buffer */
-		rx_buffer->pagecnt_bias++;
-	}
-
-	return skb;
+			rx_buffer->offset + hr, size, rx_buffer->truesize);
 }
 
 /**
  * iavf_build_skb - Build skb around an existing buffer
- * @rx_ring: Rx descriptor ring to transact packets on
  * @rx_buffer: Rx buffer to pull data from
  * @size: size of buffer to add to skb
  *
  * This function builds an skb around an existing Rx buffer, taking care
  * to set up the skb correctly and avoid any memcpy overhead.
  */
-static struct sk_buff *iavf_build_skb(struct iavf_ring *rx_ring,
-				      struct iavf_rx_buffer *rx_buffer,
+static struct sk_buff *iavf_build_skb(const struct libeth_fqe *rx_buffer,
 				      unsigned int size)
 {
-	void *va;
-#if (PAGE_SIZE < 8192)
-	unsigned int truesize = iavf_rx_pg_size(rx_ring) / 2;
-#else
-	unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) +
-				SKB_DATA_ALIGN(IAVF_SKB_PAD + size);
-#endif
+	u32 hr = rx_buffer->page->pp->p.offset;
 	struct sk_buff *skb;
+	void *va;
 
-	if (!rx_buffer || !size)
-		return NULL;
 	/* prefetch first cache line of first page */
-	va = page_address(rx_buffer->page) + rx_buffer->page_offset;
-	net_prefetch(va);
+	va = page_address(rx_buffer->page) + rx_buffer->offset;
+	net_prefetch(va + hr);
 
 	/* build an skb around the page buffer */
-	skb = napi_build_skb(va - IAVF_SKB_PAD, truesize);
+	skb = napi_build_skb(va, rx_buffer->truesize);
 	if (unlikely(!skb))
 		return NULL;
 
+	skb_mark_for_recycle(skb);
+
 	/* update pointers within the skb to store the data */
-	skb_reserve(skb, IAVF_SKB_PAD);
+	skb_reserve(skb, hr);
 	__skb_put(skb, size);
 
-	/* buffer is used by skb, update page_offset */
-#if (PAGE_SIZE < 8192)
-	rx_buffer->page_offset ^= truesize;
-#else
-	rx_buffer->page_offset += truesize;
-#endif
-
 	return skb;
 }
 
 /**
- * iavf_put_rx_buffer - Clean up used buffer and either recycle or free
- * @rx_ring: rx descriptor ring to transact packets on
- * @rx_buffer: rx buffer to pull data from
- *
- * This function will clean up the contents of the rx_buffer.  It will
- * either recycle the buffer or unmap it and free the associated resources.
- */
-static void iavf_put_rx_buffer(struct iavf_ring *rx_ring,
-			       struct iavf_rx_buffer *rx_buffer)
-{
-	if (!rx_buffer)
-		return;
-
-	if (iavf_can_reuse_rx_page(rx_buffer)) {
-		/* hand second half of page back to the ring */
-		iavf_reuse_rx_page(rx_ring, rx_buffer);
-		rx_ring->rx_stats.page_reuse_count++;
-	} else {
-		/* we are not reusing the buffer so unmap it */
-		dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma,
-				     iavf_rx_pg_size(rx_ring),
-				     DMA_FROM_DEVICE, IAVF_RX_DMA_ATTR);
-		__page_frag_cache_drain(rx_buffer->page,
-					rx_buffer->pagecnt_bias);
-	}
-
-	/* clear contents of buffer_info */
-	rx_buffer->page = NULL;
-}
-
-/**
  * iavf_is_non_eop - process handling of non-EOP buffers
  * @rx_ring: Rx ring being processed
  * @rx_desc: Rx descriptor for current buffer
@@ -1500,7 +1142,7 @@ static int iavf_clean_rx_irq(struct iavf_ring *rx_ring, int budget)
 	bool failure = false;
 
 	while (likely(total_rx_packets < (unsigned int)budget)) {
-		struct iavf_rx_buffer *rx_buffer;
+		struct libeth_fqe *rx_buffer;
 		union iavf_rx_desc *rx_desc;
 		unsigned int size;
 		u16 vlan_tag = 0;
@@ -1535,28 +1177,27 @@ static int iavf_clean_rx_irq(struct iavf_ring *rx_ring, int budget)
 		size = FIELD_GET(IAVF_RXD_QW1_LENGTH_PBUF_MASK, qword);
 
 		iavf_trace(clean_rx_irq, rx_ring, rx_desc, skb);
-		rx_buffer = iavf_get_rx_buffer(rx_ring, size);
+
+		rx_buffer = &rx_ring->rx_fqes[rx_ring->next_to_clean];
+		if (!libeth_rx_sync_for_cpu(rx_buffer, size))
+			goto skip_data;
 
 		/* retrieve a buffer from the ring */
 		if (skb)
-			iavf_add_rx_frag(rx_ring, rx_buffer, skb, size);
-		else if (ring_uses_build_skb(rx_ring))
-			skb = iavf_build_skb(rx_ring, rx_buffer, size);
+			iavf_add_rx_frag(skb, rx_buffer, size);
 		else
-			skb = iavf_construct_skb(rx_ring, rx_buffer, size);
+			skb = iavf_build_skb(rx_buffer, size);
 
 		/* exit if we failed to retrieve a buffer */
 		if (!skb) {
 			rx_ring->rx_stats.alloc_buff_failed++;
-			if (rx_buffer && size)
-				rx_buffer->pagecnt_bias++;
 			break;
 		}
 
-		iavf_put_rx_buffer(rx_ring, rx_buffer);
+skip_data:
 		cleaned_count++;
 
-		if (iavf_is_non_eop(rx_ring, rx_desc, skb))
+		if (iavf_is_non_eop(rx_ring, rx_desc, skb) || unlikely(!skb))
 			continue;
 
 		/* ERR_MASK will only have valid bits if EOP set, and
@@ -1743,8 +1384,8 @@ int iavf_napi_poll(struct napi_struct *napi, int budget)
 			clean_complete = false;
 			continue;
 		}
-		arm_wb |= ring->arm_wb;
-		ring->arm_wb = false;
+		arm_wb |= !!(ring->flags & IAVF_TXR_FLAGS_ARM_WB);
+		ring->flags &= ~IAVF_TXR_FLAGS_ARM_WB;
 	}
 
 	/* Handle case where we are called by netpoll with a budget of 0 */