1 files changed, 306 insertions, 154 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index fed26d867f4..5535862f27c 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -31,69 +31,102 @@
  *
  */
 
+#include <net/busy_poll.h>
 #include <linux/mlx4/cq.h>
 #include <linux/slab.h>
 #include <linux/mlx4/qp.h>
 #include <linux/skbuff.h>
+#include <linux/rculist.h>
 #include <linux/if_ether.h>
 #include <linux/if_vlan.h>
 #include <linux/vmalloc.h>
+#include <linux/irq.h>
 
 #include "mlx4_en.h"
 
+static int mlx4_alloc_pages(struct mlx4_en_priv *priv,
+			    struct mlx4_en_rx_alloc *page_alloc,
+			    const struct mlx4_en_frag_info *frag_info,
+			    gfp_t _gfp)
+{
+	int order;
+	struct page *page;
+	dma_addr_t dma;
+
+	for (order = MLX4_EN_ALLOC_PREFER_ORDER; ;) {
+		gfp_t gfp = _gfp;
+
+		if (order)
+			gfp |= __GFP_COMP | __GFP_NOWARN;
+		page = alloc_pages(gfp, order);
+		if (likely(page))
+			break;
+		if (--order < 0 ||
+		    ((PAGE_SIZE << order) < frag_info->frag_size))
+			return -ENOMEM;
+	}
+	dma = dma_map_page(priv->ddev, page, 0, PAGE_SIZE << order,
+			   PCI_DMA_FROMDEVICE);
+	if (dma_mapping_error(priv->ddev, dma)) {
+		put_page(page);
+		return -ENOMEM;
+	}
+	page_alloc->page_size = PAGE_SIZE << order;
+	page_alloc->page = page;
+	page_alloc->dma = dma;
+	page_alloc->page_offset = frag_info->frag_align;
+	/* Not doing get_page() for each frag is a big win
+	 * on asymetric workloads.
+	 */
+	atomic_set(&page->_count,
+		   page_alloc->page_size / frag_info->frag_stride);
+	return 0;
+}
+
 static int mlx4_en_alloc_frags(struct mlx4_en_priv *priv,
 			       struct mlx4_en_rx_desc *rx_desc,
 			       struct mlx4_en_rx_alloc *frags,
-			       struct mlx4_en_rx_alloc *ring_alloc)
+			       struct mlx4_en_rx_alloc *ring_alloc,
+			       gfp_t gfp)
 {
 	struct mlx4_en_rx_alloc page_alloc[MLX4_EN_MAX_RX_FRAGS];
-	struct mlx4_en_frag_info *frag_info;
+	const struct mlx4_en_frag_info *frag_info;
 	struct page *page;
 	dma_addr_t dma;
 	int i;
 
 	for (i = 0; i < priv->num_frags; i++) {
 		frag_info = &priv->frag_info[i];
-		if (ring_alloc[i].offset == frag_info->last_offset) {
-			page = alloc_pages(GFP_ATOMIC | __GFP_COMP,
-					MLX4_EN_ALLOC_ORDER);
-			if (!page)
-				goto out;
-			dma = dma_map_page(priv->ddev, page, 0,
-				MLX4_EN_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
-			if (dma_mapping_error(priv->ddev, dma)) {
-				put_page(page);
-				goto out;
-			}
-			page_alloc[i].page = page;
-			page_alloc[i].dma = dma;
-			page_alloc[i].offset = frag_info->frag_align;
-		} else {
-			page_alloc[i].page = ring_alloc[i].page;
-			get_page(ring_alloc[i].page);
-			page_alloc[i].dma = ring_alloc[i].dma;
-			page_alloc[i].offset = ring_alloc[i].offset +
-						frag_info->frag_stride;
-		}
+		page_alloc[i] = ring_alloc[i];
+		page_alloc[i].page_offset += frag_info->frag_stride;
+
+		if (page_alloc[i].page_offset + frag_info->frag_stride <=
+		    ring_alloc[i].page_size)
+			continue;
+
+		if (mlx4_alloc_pages(priv, &page_alloc[i], frag_info, gfp))
+			goto out;
 	}
 
 	for (i = 0; i < priv->num_frags; i++) {
 		frags[i] = ring_alloc[i];
-		dma = ring_alloc[i].dma + ring_alloc[i].offset;
+		dma = ring_alloc[i].dma + ring_alloc[i].page_offset;
 		ring_alloc[i] = page_alloc[i];
 		rx_desc->data[i].addr = cpu_to_be64(dma);
 	}
 
 	return 0;
 
-
 out:
 	while (i--) {
 		frag_info = &priv->frag_info[i];
-		if (ring_alloc[i].offset == frag_info->last_offset)
+		if (page_alloc[i].page != ring_alloc[i].page) {
 			dma_unmap_page(priv->ddev, page_alloc[i].dma,
-				MLX4_EN_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
-		put_page(page_alloc[i].page);
+				page_alloc[i].page_size, PCI_DMA_FROMDEVICE);
+			page = page_alloc[i].page;
+			atomic_set(&page->_count, 1);
+			put_page(page);
+		}
 	}
 	return -ENOMEM;
 }
@@ -102,12 +135,14 @@ static void mlx4_en_free_frag(struct mlx4_en_priv *priv,
 			      struct mlx4_en_rx_alloc *frags,
 			      int i)
 {
-	struct mlx4_en_frag_info *frag_info = &priv->frag_info[i];
+	const struct mlx4_en_frag_info *frag_info = &priv->frag_info[i];
+	u32 next_frag_end = frags[i].page_offset + 2 * frag_info->frag_stride;
+
+
+	if (next_frag_end > frags[i].page_size)
+		dma_unmap_page(priv->ddev, frags[i].dma, frags[i].page_size,
+			       PCI_DMA_FROMDEVICE);
 
-	if (frags[i].offset == frag_info->last_offset) {
-		dma_unmap_page(priv->ddev, frags[i].dma, MLX4_EN_ALLOC_SIZE,
-					 PCI_DMA_FROMDEVICE);
-	}
 	if (frags[i].page)
 		put_page(frags[i].page);
 }
@@ -115,35 +150,28 @@ static void mlx4_en_free_frag(struct mlx4_en_priv *priv,
 static int mlx4_en_init_allocator(struct mlx4_en_priv *priv,
 				  struct mlx4_en_rx_ring *ring)
 {
-	struct mlx4_en_rx_alloc *page_alloc;
 	int i;
+	struct mlx4_en_rx_alloc *page_alloc;
 
 	for (i = 0; i < priv->num_frags; i++) {
-		page_alloc = &ring->page_alloc[i];
-		page_alloc->page = alloc_pages(GFP_ATOMIC | __GFP_COMP,
-					       MLX4_EN_ALLOC_ORDER);
-		if (!page_alloc->page)
-			goto out;
+		const struct mlx4_en_frag_info *frag_info = &priv->frag_info[i];
 
-		page_alloc->dma = dma_map_page(priv->ddev, page_alloc->page, 0,
-					MLX4_EN_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
-		if (dma_mapping_error(priv->ddev, page_alloc->dma)) {
-			put_page(page_alloc->page);
-			page_alloc->page = NULL;
+		if (mlx4_alloc_pages(priv, &ring->page_alloc[i],
+				     frag_info, GFP_KERNEL))
 			goto out;
-		}
-		page_alloc->offset = priv->frag_info[i].frag_align;
-		en_dbg(DRV, priv, "Initialized allocator:%d with page:%p\n",
-		       i, page_alloc->page);
 	}
 	return 0;
 
 out:
 	while (i--) {
+		struct page *page;
+
 		page_alloc = &ring->page_alloc[i];
 		dma_unmap_page(priv->ddev, page_alloc->dma,
-				MLX4_EN_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
-		put_page(page_alloc->page);
+			       page_alloc->page_size, PCI_DMA_FROMDEVICE);
+		page = page_alloc->page;
+		atomic_set(&page->_count, 1);
+		put_page(page);
 		page_alloc->page = NULL;
 	}
 	return -ENOMEM;
@@ -156,13 +184,19 @@ static void mlx4_en_destroy_allocator(struct mlx4_en_priv *priv,
 	int i;
 
 	for (i = 0; i < priv->num_frags; i++) {
+		const struct mlx4_en_frag_info *frag_info = &priv->frag_info[i];
+
 		page_alloc = &ring->page_alloc[i];
 		en_dbg(DRV, priv, "Freeing allocator:%d count:%d\n",
 		       i, page_count(page_alloc->page));
 
 		dma_unmap_page(priv->ddev, page_alloc->dma,
-				MLX4_EN_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
-		put_page(page_alloc->page);
+				page_alloc->page_size, PCI_DMA_FROMDEVICE);
+		while (page_alloc->page_offset + frag_info->frag_stride <
+		       page_alloc->page_size) {
+			put_page(page_alloc->page);
+			page_alloc->page_offset += frag_info->frag_stride;
+		}
 		page_alloc->page = NULL;
 	}
 }
@@ -193,13 +227,14 @@ static void mlx4_en_init_rx_desc(struct mlx4_en_priv *priv,
 }
 
 static int mlx4_en_prepare_rx_desc(struct mlx4_en_priv *priv,
-				   struct mlx4_en_rx_ring *ring, int index)
+				   struct mlx4_en_rx_ring *ring, int index,
+				   gfp_t gfp)
 {
 	struct mlx4_en_rx_desc *rx_desc = ring->buf + (index * ring->stride);
 	struct mlx4_en_rx_alloc *frags = ring->rx_info +
 					(index << priv->log_rx_info);
 
-	return mlx4_en_alloc_frags(priv, rx_desc, frags, ring->page_alloc);
+	return mlx4_en_alloc_frags(priv, rx_desc, frags, ring->page_alloc, gfp);
 }
 
 static inline void mlx4_en_update_rx_prod_db(struct mlx4_en_rx_ring *ring)
@@ -230,18 +265,17 @@ static int mlx4_en_fill_rx_buffers(struct mlx4_en_priv *priv)
 
 	for (buf_ind = 0; buf_ind < priv->prof->rx_ring_size; buf_ind++) {
 		for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
-			ring = &priv->rx_ring[ring_ind];
+			ring = priv->rx_ring[ring_ind];
 
 			if (mlx4_en_prepare_rx_desc(priv, ring,
-						    ring->actual_size)) {
+						    ring->actual_size,
+						    GFP_KERNEL)) {
 				if (ring->actual_size < MLX4_EN_MIN_RX_SIZE) {
-					en_err(priv, "Failed to allocate "
-						     "enough rx buffers\n");
+					en_err(priv, "Failed to allocate enough rx buffers\n");
 					return -ENOMEM;
 				} else {
 					new_size = rounddown_pow_of_two(ring->actual_size);
-					en_warn(priv, "Only %d buffers allocated "
-						      "reducing ring size to %d",
+					en_warn(priv, "Only %d buffers allocated reducing ring size to %d\n",
 						ring->actual_size, new_size);
 					goto reduce_rings;
 				}
@@ -254,7 +288,7 @@ static int mlx4_en_fill_rx_buffers(struct mlx4_en_priv *priv)
 
 reduce_rings:
 	for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
-		ring = &priv->rx_ring[ring_ind];
+		ring = priv->rx_ring[ring_ind];
 		while (ring->actual_size > new_size) {
 			ring->actual_size--;
 			ring->prod--;
@@ -283,13 +317,49 @@ static void mlx4_en_free_rx_buf(struct mlx4_en_priv *priv,
 	}
 }
 
+void mlx4_en_set_num_rx_rings(struct mlx4_en_dev *mdev)
+{
+	int i;
+	int num_of_eqs;
+	int num_rx_rings;
+	struct mlx4_dev *dev = mdev->dev;
+
+	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
+		if (!dev->caps.comp_pool)
+			num_of_eqs = max_t(int, MIN_RX_RINGS,
+					   min_t(int,
+						 dev->caps.num_comp_vectors,
+						 DEF_RX_RINGS));
+		else
+			num_of_eqs = min_t(int, MAX_MSIX_P_PORT,
+					   dev->caps.comp_pool/
+					   dev->caps.num_ports) - 1;
+
+		num_rx_rings = min_t(int, num_of_eqs,
+				     netif_get_num_default_rss_queues());
+		mdev->profile.prof[i].rx_ring_num =
+			rounddown_pow_of_two(num_rx_rings);
+	}
+}
+
 int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
-			   struct mlx4_en_rx_ring *ring, u32 size, u16 stride)
+			   struct mlx4_en_rx_ring **pring,
+			   u32 size, u16 stride, int node)
 {
 	struct mlx4_en_dev *mdev = priv->mdev;
+	struct mlx4_en_rx_ring *ring;
 	int err = -ENOMEM;
 	int tmp;
 
+	ring = kzalloc_node(sizeof(*ring), GFP_KERNEL, node);
+	if (!ring) {
+		ring = kzalloc(sizeof(*ring), GFP_KERNEL);
+		if (!ring) {
+			en_err(priv, "Failed to allocate RX ring structure\n");
+			return -ENOMEM;
+		}
+	}
+
 	ring->prod = 0;
 	ring->cons = 0;
 	ring->size = size;
@@ -300,17 +370,25 @@ int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
 
 	tmp = size * roundup_pow_of_two(MLX4_EN_MAX_RX_FRAGS *
 					sizeof(struct mlx4_en_rx_alloc));
-	ring->rx_info = vmalloc(tmp);
-	if (!ring->rx_info)
-		return -ENOMEM;
+	ring->rx_info = vmalloc_node(tmp, node);
+	if (!ring->rx_info) {
+		ring->rx_info = vmalloc(tmp);
+		if (!ring->rx_info) {
+			err = -ENOMEM;
+			goto err_ring;
+		}
+	}
 
 	en_dbg(DRV, priv, "Allocated rx_info ring at addr:%p size:%d\n",
 		 ring->rx_info, tmp);
 
+	/* Allocate HW buffers on provided NUMA node */
+	set_dev_node(&mdev->dev->pdev->dev, node);
 	err = mlx4_alloc_hwq_res(mdev->dev, &ring->wqres,
 				 ring->buf_size, 2 * PAGE_SIZE);
+	set_dev_node(&mdev->dev->pdev->dev, mdev->dev->numa_node);
 	if (err)
-		goto err_ring;
+		goto err_info;
 
 	err = mlx4_en_map_buffer(&ring->wqres.buf);
 	if (err) {
@@ -319,13 +397,20 @@ int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
 	}
 	ring->buf = ring->wqres.buf.direct.buf;
 
+	ring->hwtstamp_rx_filter = priv->hwtstamp_config.rx_filter;
+
+	*pring = ring;
 	return 0;
 
 err_hwq:
 	mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
-err_ring:
+err_info:
 	vfree(ring->rx_info);
 	ring->rx_info = NULL;
+err_ring:
+	kfree(ring);
+	*pring = NULL;
+
 	return err;
 }
 
@@ -339,12 +424,12 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv)
 					DS_SIZE * priv->num_frags);
 
 	for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
-		ring = &priv->rx_ring[ring_ind];
+		ring = priv->rx_ring[ring_ind];
 
 		ring->prod = 0;
 		ring->cons = 0;
 		ring->actual_size = 0;
-		ring->cqn = priv->rx_cq[ring_ind].mcq.cqn;
+		ring->cqn = priv->rx_cq[ring_ind]->mcq.cqn;
 
 		ring->stride = stride;
 		if (ring->stride <= TXBB_SIZE)
@@ -375,7 +460,7 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv)
 		goto err_buffers;
 
 	for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
-		ring = &priv->rx_ring[ring_ind];
+		ring = priv->rx_ring[ring_ind];
 
 		ring->size_mask = ring->actual_size - 1;
 		mlx4_en_update_rx_prod_db(ring);
@@ -385,30 +470,34 @@ int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv)
 
 err_buffers:
 	for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++)
-		mlx4_en_free_rx_buf(priv, &priv->rx_ring[ring_ind]);
+		mlx4_en_free_rx_buf(priv, priv->rx_ring[ring_ind]);
 
 	ring_ind = priv->rx_ring_num - 1;
 err_allocator:
 	while (ring_ind >= 0) {
-		if (priv->rx_ring[ring_ind].stride <= TXBB_SIZE)
-			priv->rx_ring[ring_ind].buf -= TXBB_SIZE;
-		mlx4_en_destroy_allocator(priv, &priv->rx_ring[ring_ind]);
+		if (priv->rx_ring[ring_ind]->stride <= TXBB_SIZE)
+			priv->rx_ring[ring_ind]->buf -= TXBB_SIZE;
+		mlx4_en_destroy_allocator(priv, priv->rx_ring[ring_ind]);
 		ring_ind--;
 	}
 	return err;
 }
 
 void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv,
-			     struct mlx4_en_rx_ring *ring, u32 size, u16 stride)
+			     struct mlx4_en_rx_ring **pring,
+			     u32 size, u16 stride)
 {
 	struct mlx4_en_dev *mdev = priv->mdev;
+	struct mlx4_en_rx_ring *ring = *pring;
 
 	mlx4_en_unmap_buffer(&ring->wqres.buf);
 	mlx4_free_hwq_res(mdev->dev, &ring->wqres, size * stride + TXBB_SIZE);
 	vfree(ring->rx_info);
 	ring->rx_info = NULL;
+	kfree(ring);
+	*pring = NULL;
 #ifdef CONFIG_RFS_ACCEL
-	mlx4_en_cleanup_filters(priv, ring);
+	mlx4_en_cleanup_filters(priv);
 #endif
 }
 
@@ -446,11 +535,11 @@ static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv,
 					DMA_FROM_DEVICE);
 
 		/* Save page reference in skb */
-		get_page(frags[nr].page);
 		__skb_frag_set_page(&skb_frags_rx[nr], frags[nr].page);
 		skb_frag_size_set(&skb_frags_rx[nr], frag_info->frag_size);
-		skb_frags_rx[nr].page_offset = frags[nr].offset;
+		skb_frags_rx[nr].page_offset = frags[nr].page_offset;
 		skb->truesize += frag_info->frag_stride;
+		frags[nr].page = NULL;
 	}
 	/* Adjust size of last fragment to match actual length */
 	if (nr > 0)
@@ -487,7 +576,7 @@ static struct sk_buff *mlx4_en_rx_skb(struct mlx4_en_priv *priv,
 
 	/* Get pointer to first fragment so we could copy the headers into the
 	 * (linear part of the) skb */
-	va = page_address(frags[0].page) + frags[0].offset;
+	va = page_address(frags[0].page) + frags[0].page_offset;
 
 	if (length <= SMALL_PACKET_SIZE) {
 		/* We are copying all relevant data to the skb - temporarily
@@ -543,7 +632,7 @@ static void mlx4_en_refill_rx_buffers(struct mlx4_en_priv *priv,
 	int index = ring->prod & ring->size_mask;
 
 	while ((u32) (ring->prod - ring->cons) < ring->actual_size) {
-		if (mlx4_en_prepare_rx_desc(priv, ring, index))
+		if (mlx4_en_prepare_rx_desc(priv, ring, index, GFP_ATOMIC))
 			break;
 		ring->prod++;
 		index = ring->prod & ring->size_mask;
@@ -553,8 +642,9 @@ static void mlx4_en_refill_rx_buffers(struct mlx4_en_priv *priv,
 int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int budget)
 {
 	struct mlx4_en_priv *priv = netdev_priv(dev);
+	struct mlx4_en_dev *mdev = priv->mdev;
 	struct mlx4_cqe *cqe;
-	struct mlx4_en_rx_ring *ring = &priv->rx_ring[cq->ring];
+	struct mlx4_en_rx_ring *ring = priv->rx_ring[cq->ring];
 	struct mlx4_en_rx_alloc *frags;
 	struct mlx4_en_rx_desc *rx_desc;
 	struct sk_buff *skb;
@@ -563,14 +653,16 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 	unsigned int length;
 	int polled = 0;
 	int ip_summed;
-	struct ethhdr *ethh;
-	dma_addr_t dma;
-	u64 s_mac;
 	int factor = priv->cqe_factor;
+	u64 timestamp;
+	bool l2_tunnel;
 
 	if (!priv->port_up)
 		return 0;
 
+	if (budget <= 0)
+		return polled;
+
 	/* We assume a 1:1 mapping between CQEs and Rx descriptors, so Rx
 	 * descriptor offset can be deduced from the CQE index instead of
 	 * reading 'cqe->index' */
@@ -592,10 +684,9 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 		/* Drop packet on bad receive or bad checksum */
 		if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) ==
 						MLX4_CQE_OPCODE_ERROR)) {
-			en_err(priv, "CQE completed in error - vendor "
-				  "syndrom:%d syndrom:%d\n",
-				  ((struct mlx4_err_cqe *) cqe)->vendor_err_syndrome,
-				  ((struct mlx4_err_cqe *) cqe)->syndrome);
+			en_err(priv, "CQE completed in error - vendor syndrom:%d syndrom:%d\n",
+			       ((struct mlx4_err_cqe *)cqe)->vendor_err_syndrome,
+			       ((struct mlx4_err_cqe *)cqe)->syndrome);
 			goto next;
 		}
 		if (unlikely(cqe->badfcs_enc & MLX4_CQE_BAD_FCS)) {
@@ -603,21 +694,40 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 			goto next;
 		}
 
-		/* Get pointer to first fragment since we haven't skb yet and
-		 * cast it to ethhdr struct */
-		dma = be64_to_cpu(rx_desc->data[0].addr);
-		dma_sync_single_for_cpu(priv->ddev, dma, sizeof(*ethh),
-					DMA_FROM_DEVICE);
-		ethh = (struct ethhdr *)(page_address(frags[0].page) +
-					 frags[0].offset);
-		s_mac = mlx4_en_mac_to_u64(ethh->h_source);
-
-		/* If source MAC is equal to our own MAC and not performing
-		 * the selftest or flb disabled - drop the packet */
-		if (s_mac == priv->mac &&
-		    !((dev->features & NETIF_F_LOOPBACK) ||
-		      priv->validate_loopback))
-			goto next;
+		/* Check if we need to drop the packet if SRIOV is not enabled
+		 * and not performing the selftest or flb disabled
+		 */
+		if (priv->flags & MLX4_EN_FLAG_RX_FILTER_NEEDED) {
+			struct ethhdr *ethh;
+			dma_addr_t dma;
+			/* Get pointer to first fragment since we haven't
+			 * skb yet and cast it to ethhdr struct
+			 */
+			dma = be64_to_cpu(rx_desc->data[0].addr);
+			dma_sync_single_for_cpu(priv->ddev, dma, sizeof(*ethh),
+						DMA_FROM_DEVICE);
+			ethh = (struct ethhdr *)(page_address(frags[0].page) +
+						 frags[0].page_offset);
+
+			if (is_multicast_ether_addr(ethh->h_dest)) {
+				struct mlx4_mac_entry *entry;
+				struct hlist_head *bucket;
+				unsigned int mac_hash;
+
+				/* Drop the packet, since HW loopback-ed it */
+				mac_hash = ethh->h_source[MLX4_EN_MAC_HASH_IDX];
+				bucket = &priv->mac_hash[mac_hash];
+				rcu_read_lock();
+				hlist_for_each_entry_rcu(entry, bucket, hlist) {
+					if (ether_addr_equal_64bits(entry->mac,
+								    ethh->h_source)) {
+						rcu_read_unlock();
+						goto next;
+					}
+				}
+				rcu_read_unlock();
+			}
+		}
 
 		/*
 		 * Packet is OK - process it.
@@ -626,6 +736,8 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 		length -= ring->fcs_del;
 		ring->bytes += length;
 		ring->packets++;
+		l2_tunnel = (dev->hw_enc_features & NETIF_F_RXCSUM) &&
+			(cqe->vlan_my_qpn & cpu_to_be32(MLX4_CQE_L2_TUNNEL));
 
 		if (likely(dev->features & NETIF_F_RXCSUM)) {
 			if ((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) &&
@@ -635,8 +747,11 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 				 * - DIX Ethernet (type interpretation)
 				 * - TCP/IP (v4)
 				 * - without IP options
-				 * - not an IP fragment */
-				if (dev->features & NETIF_F_GRO) {
+				 * - not an IP fragment
+				 * - no LLS polling in progress
+				 */
+				if (!mlx4_en_cq_busy_polling(cq) &&
+				    (dev->features & NETIF_F_GRO)) {
 					struct sk_buff *gro_skb = napi_get_frags(&cq->napi);
 					if (!gro_skb)
 						goto next;
@@ -652,19 +767,32 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 					gro_skb->data_len = length;
 					gro_skb->ip_summed = CHECKSUM_UNNECESSARY;
 
-					if (cqe->vlan_my_qpn &
-					    cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK)) {
+					if (l2_tunnel)
+						gro_skb->encapsulation = 1;
+					if ((cqe->vlan_my_qpn &
+					    cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK)) &&
+					    (dev->features & NETIF_F_HW_VLAN_CTAG_RX)) {
 						u16 vid = be16_to_cpu(cqe->sl_vid);
 
-						__vlan_hwaccel_put_tag(gro_skb, vid);
+						__vlan_hwaccel_put_tag(gro_skb, htons(ETH_P_8021Q), vid);
 					}
 
 					if (dev->features & NETIF_F_RXHASH)
-						gro_skb->rxhash = be32_to_cpu(cqe->immed_rss_invalid);
+						skb_set_hash(gro_skb,
+							     be32_to_cpu(cqe->immed_rss_invalid),
+							     PKT_HASH_TYPE_L3);
 
 					skb_record_rx_queue(gro_skb, cq->ring);
-					napi_gro_frags(&cq->napi);
+					skb_mark_napi_id(gro_skb, &cq->napi);
 
+					if (ring->hwtstamp_rx_filter == HWTSTAMP_FILTER_ALL) {
+						timestamp = mlx4_en_get_cqe_ts(cqe);
+						mlx4_en_fill_hwtstamps(mdev,
+								       skb_hwtstamps(gro_skb),
+								       timestamp);
+					}
+
+					napi_gro_frags(&cq->napi);
 					goto next;
 				}
 
@@ -694,15 +822,31 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 		skb->protocol = eth_type_trans(skb, dev);
 		skb_record_rx_queue(skb, cq->ring);
 
+		if (l2_tunnel)
+			skb->encapsulation = 1;
+
 		if (dev->features & NETIF_F_RXHASH)
-			skb->rxhash = be32_to_cpu(cqe->immed_rss_invalid);
+			skb_set_hash(skb,
+				     be32_to_cpu(cqe->immed_rss_invalid),
+				     PKT_HASH_TYPE_L3);
+
+		if ((be32_to_cpu(cqe->vlan_my_qpn) &
+		    MLX4_CQE_VLAN_PRESENT_MASK) &&
+		    (dev->features & NETIF_F_HW_VLAN_CTAG_RX))
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(cqe->sl_vid));
+
+		if (ring->hwtstamp_rx_filter == HWTSTAMP_FILTER_ALL) {
+			timestamp = mlx4_en_get_cqe_ts(cqe);
+			mlx4_en_fill_hwtstamps(mdev, skb_hwtstamps(skb),
+					       timestamp);
+		}
 
-		if (be32_to_cpu(cqe->vlan_my_qpn) &
-		    MLX4_CQE_VLAN_PRESENT_MASK)
-			__vlan_hwaccel_put_tag(skb, be16_to_cpu(cqe->sl_vid));
+		skb_mark_napi_id(skb, &cq->napi);
 
-		/* Push it up the stack */
-		netif_receive_skb(skb);
+		if (!mlx4_en_cq_busy_polling(cq))
+			napi_gro_receive(&cq->napi, skb);
+		else
+			netif_receive_skb(skb);
 
 next:
 		for (nr = 0; nr < priv->num_frags; nr++)
@@ -745,12 +889,33 @@ int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget)
 	struct mlx4_en_priv *priv = netdev_priv(dev);
 	int done;
 
+	if (!mlx4_en_cq_lock_napi(cq))
+		return budget;
+
 	done = mlx4_en_process_rx_cq(dev, cq, budget);
 
+	mlx4_en_cq_unlock_napi(cq);
+
 	/* If we used up all the quota - we're probably not done yet... */
-	if (done == budget)
+	if (done == budget) {
+		int cpu_curr;
+		const struct cpumask *aff;
+
 		INC_PERF_COUNTER(priv->pstats.napi_quota);
-	else {
+
+		cpu_curr = smp_processor_id();
+		aff = irq_desc_get_irq_data(cq->irq_desc)->affinity;
+
+		if (unlikely(!cpumask_test_cpu(cpu_curr, aff))) {
+			/* Current cpu is not according to smp_irq_affinity -
+			 * probably affinity changed. need to stop this NAPI
+			 * poll, and restart it on the right CPU
+			 */
+			napi_complete(napi);
+			mlx4_en_arm_cq(priv, cq);
+			return 0;
+		}
+	} else {
 		/* Done for now */
 		napi_complete(napi);
 		mlx4_en_arm_cq(priv, cq);
@@ -758,21 +923,7 @@ int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget)
 	return done;
 }
 
-
-/* Calculate the last offset position that accommodates a full fragment
- * (assuming fagment size = stride-align) */
-static int mlx4_en_last_alloc_offset(struct mlx4_en_priv *priv, u16 stride, u16 align)
-{
-	u16 res = MLX4_EN_ALLOC_SIZE % stride;
-	u16 offset = MLX4_EN_ALLOC_SIZE - stride - res + align;
-
-	en_dbg(DRV, priv, "Calculated last offset for stride:%d align:%d "
-			    "res:%d offset:%d\n", stride, align, res, offset);
-	return offset;
-}
-
-
-static int frag_sizes[] = {
+static const int frag_sizes[] = {
 	FRAG_SZ0,
 	FRAG_SZ1,
 	FRAG_SZ2,
@@ -800,9 +951,6 @@ void mlx4_en_calc_rx_buf(struct net_device *dev)
 			priv->frag_info[i].frag_stride =
 				ALIGN(frag_sizes[i], SMP_CACHE_BYTES);
 		}
-		priv->frag_info[i].last_offset = mlx4_en_last_alloc_offset(
-						priv, priv->frag_info[i].frag_stride,
-						priv->frag_info[i].frag_align);
 		buf_size += priv->frag_info[i].frag_size;
 		i++;
 	}
@@ -811,16 +959,16 @@ void mlx4_en_calc_rx_buf(struct net_device *dev)
 	priv->rx_skb_size = eff_mtu;
 	priv->log_rx_info = ROUNDUP_LOG2(i * sizeof(struct mlx4_en_rx_alloc));
 
-	en_dbg(DRV, priv, "Rx buffer scatter-list (effective-mtu:%d "
-		  "num_frags:%d):\n", eff_mtu, priv->num_frags);
+	en_dbg(DRV, priv, "Rx buffer scatter-list (effective-mtu:%d num_frags:%d):\n",
+	       eff_mtu, priv->num_frags);
 	for (i = 0; i < priv->num_frags; i++) {
-		en_dbg(DRV, priv, "  frag:%d - size:%d prefix:%d align:%d "
-				"stride:%d last_offset:%d\n", i,
-				priv->frag_info[i].frag_size,
-				priv->frag_info[i].frag_prefix_size,
-				priv->frag_info[i].frag_align,
-				priv->frag_info[i].frag_stride,
-				priv->frag_info[i].last_offset);
+		en_err(priv,
+		       "  frag:%d - size:%d prefix:%d align:%d stride:%d\n",
+		       i,
+		       priv->frag_info[i].frag_size,
+		       priv->frag_info[i].frag_prefix_size,
+		       priv->frag_info[i].frag_align,
+		       priv->frag_info[i].frag_stride);
 	}
 }
 
@@ -835,13 +983,11 @@ static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv, int qpn,
 	struct mlx4_qp_context *context;
 	int err = 0;
 
-	context = kmalloc(sizeof *context , GFP_KERNEL);
-	if (!context) {
-		en_err(priv, "Failed to allocate qp context\n");
+	context = kmalloc(sizeof(*context), GFP_KERNEL);
+	if (!context)
 		return -ENOMEM;
-	}
 
-	err = mlx4_qp_alloc(mdev->dev, qpn, qp);
+	err = mlx4_qp_alloc(mdev->dev, qpn, qp, GFP_KERNEL);
 	if (err) {
 		en_err(priv, "Failed to allocate qp #%x\n", qpn);
 		goto out;
@@ -881,7 +1027,7 @@ int mlx4_en_create_drop_qp(struct mlx4_en_priv *priv)
 		en_err(priv, "Failed reserving drop qpn\n");
 		return err;
 	}
-	err = mlx4_qp_alloc(priv->mdev->dev, qpn, &priv->drop_qp);
+	err = mlx4_qp_alloc(priv->mdev->dev, qpn, &priv->drop_qp, GFP_KERNEL);
 	if (err) {
 		en_err(priv, "Failed allocating drop qp\n");
 		mlx4_qp_release_range(priv->mdev->dev, qpn, 1);
@@ -930,7 +1076,7 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
 
 	for (i = 0; i < priv->rx_ring_num; i++) {
 		qpn = rss_map->base_qpn + i;
-		err = mlx4_en_config_rss_qp(priv, qpn, &priv->rx_ring[i],
+		err = mlx4_en_config_rss_qp(priv, qpn, priv->rx_ring[i],
 					    &rss_map->state[i],
 					    &rss_map->qps[i]);
 		if (err)
@@ -940,14 +1086,14 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
 	}
 
 	/* Configure RSS indirection qp */
-	err = mlx4_qp_alloc(mdev->dev, priv->base_qpn, &rss_map->indir_qp);
+	err = mlx4_qp_alloc(mdev->dev, priv->base_qpn, &rss_map->indir_qp, GFP_KERNEL);
 	if (err) {
 		en_err(priv, "Failed to allocate RSS indirection QP\n");
 		goto rss_err;
 	}
 	rss_map->indir_qp.event = mlx4_en_sqp_event;
 	mlx4_en_fill_qp_context(priv, 0, 0, 0, 1, priv->base_qpn,
-				priv->rx_ring[0].cqn, -1, &context);
+				priv->rx_ring[0]->cqn, -1, &context);
 
 	if (!priv->prof->rss_rings || priv->prof->rss_rings > priv->rx_ring_num)
 		rss_rings = priv->rx_ring_num;
@@ -964,6 +1110,12 @@ int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
 		rss_mask |=  MLX4_RSS_UDP_IPV4 | MLX4_RSS_UDP_IPV6;
 		rss_context->base_qpn_udp = rss_context->default_qpn;
 	}
+
+	if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
+		en_info(priv, "Setting RSS context tunnel type to RSS on inner headers\n");
+		rss_mask |= MLX4_RSS_BY_INNER_HEADERS;
+	}
+
 	rss_context->flags = rss_mask;
 	rss_context->hash_fn = MLX4_RSS_HASH_TOP;
 	for (i = 0; i < 10; i++)