1 files changed, 57 insertions, 26 deletions

diff --git a/drivers/net/igbvf/netdev.c b/drivers/net/igbvf/netdev.c
index 91024a3..a127620 100644
--- a/drivers/net/igbvf/netdev.c
+++ b/drivers/net/igbvf/netdev.c
@@ -170,18 +170,12 @@ static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring,
 		}
 
 		if (!buffer_info->skb) {
-			skb = netdev_alloc_skb(netdev, bufsz + NET_IP_ALIGN);
+			skb = netdev_alloc_skb_ip_align(netdev, bufsz);
 			if (!skb) {
 				adapter->alloc_rx_buff_failed++;
 				goto no_buffers;
 			}
 
-			/* Make buffer alignment 2 beyond a 16 byte boundary
-			 * this will result in a 16 byte aligned IP header after
-			 * the 14 byte MAC header is removed
-			 */
-			skb_reserve(skb, NET_IP_ALIGN);
-
 			buffer_info->skb = skb;
 			buffer_info->dma = pci_map_single(pdev, skb->data,
 			                                  bufsz,
@@ -372,10 +366,20 @@ next_desc:
 static void igbvf_put_txbuf(struct igbvf_adapter *adapter,
                             struct igbvf_buffer *buffer_info)
 {
-	buffer_info->dma = 0;
+	if (buffer_info->dma) {
+		if (buffer_info->mapped_as_page)
+			pci_unmap_page(adapter->pdev,
+				       buffer_info->dma,
+				       buffer_info->length,
+				       PCI_DMA_TODEVICE);
+		else
+			pci_unmap_single(adapter->pdev,
+					 buffer_info->dma,
+					 buffer_info->length,
+					 PCI_DMA_TODEVICE);
+		buffer_info->dma = 0;
+	}
 	if (buffer_info->skb) {
-		skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb,
-		              DMA_TO_DEVICE);
 		dev_kfree_skb_any(buffer_info->skb);
 		buffer_info->skb = NULL;
 	}
@@ -823,8 +827,8 @@ static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring)
 		adapter->detect_tx_hung = false;
 		if (tx_ring->buffer_info[i].time_stamp &&
 		    time_after(jiffies, tx_ring->buffer_info[i].time_stamp +
-		               (adapter->tx_timeout_factor * HZ))
-		    && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
+		               (adapter->tx_timeout_factor * HZ)) &&
+		    !(er32(STATUS) & E1000_STATUS_TXOFF)) {
 
 			tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
 			/* detected Tx unit hang */
@@ -1049,7 +1053,7 @@ static int igbvf_request_msix(struct igbvf_adapter *adapter)
 	}
 
 	err = request_irq(adapter->msix_entries[vector].vector,
-	                  &igbvf_intr_msix_tx, 0, adapter->tx_ring->name,
+	                  igbvf_intr_msix_tx, 0, adapter->tx_ring->name,
 	                  netdev);
 	if (err)
 		goto out;
@@ -1059,7 +1063,7 @@ static int igbvf_request_msix(struct igbvf_adapter *adapter)
 	vector++;
 
 	err = request_irq(adapter->msix_entries[vector].vector,
-	                  &igbvf_intr_msix_rx, 0, adapter->rx_ring->name,
+	                  igbvf_intr_msix_rx, 0, adapter->rx_ring->name,
 	                  netdev);
 	if (err)
 		goto out;
@@ -1069,7 +1073,7 @@ static int igbvf_request_msix(struct igbvf_adapter *adapter)
 	vector++;
 
 	err = request_irq(adapter->msix_entries[vector].vector,
-	                  &igbvf_msix_other, 0, netdev->name, netdev);
+	                  igbvf_msix_other, 0, netdev->name, netdev);
 	if (err)
 		goto out;
 
@@ -2094,27 +2098,24 @@ static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter,
                                    unsigned int first)
 {
 	struct igbvf_buffer *buffer_info;
+	struct pci_dev *pdev = adapter->pdev;
 	unsigned int len = skb_headlen(skb);
 	unsigned int count = 0, i;
 	unsigned int f;
-	dma_addr_t *map;
 
 	i = tx_ring->next_to_use;
 
-	if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) {
-		dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
-		return 0;
-	}
-
-	map = skb_shinfo(skb)->dma_maps;
-
 	buffer_info = &tx_ring->buffer_info[i];
 	BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
 	buffer_info->length = len;
 	/* set time_stamp *before* dma to help avoid a possible race */
 	buffer_info->time_stamp = jiffies;
 	buffer_info->next_to_watch = i;
-	buffer_info->dma = skb_shinfo(skb)->dma_head;
+	buffer_info->dma = pci_map_single(pdev, skb->data, len,
+					  PCI_DMA_TODEVICE);
+	if (pci_dma_mapping_error(pdev, buffer_info->dma))
+		goto dma_error;
+
 
 	for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
 		struct skb_frag_struct *frag;
@@ -2131,14 +2132,44 @@ static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter,
 		buffer_info->length = len;
 		buffer_info->time_stamp = jiffies;
 		buffer_info->next_to_watch = i;
-		buffer_info->dma = map[count];
+		buffer_info->mapped_as_page = true;
+		buffer_info->dma = pci_map_page(pdev,
+						frag->page,
+						frag->page_offset,
+						len,
+						PCI_DMA_TODEVICE);
+		if (pci_dma_mapping_error(pdev, buffer_info->dma))
+			goto dma_error;
 		count++;
 	}
 
 	tx_ring->buffer_info[i].skb = skb;
 	tx_ring->buffer_info[first].next_to_watch = i;
 
-	return count + 1;
+	return ++count;
+
+dma_error:
+	dev_err(&pdev->dev, "TX DMA map failed\n");
+
+	/* clear timestamp and dma mappings for failed buffer_info mapping */
+	buffer_info->dma = 0;
+	buffer_info->time_stamp = 0;
+	buffer_info->length = 0;
+	buffer_info->next_to_watch = 0;
+	buffer_info->mapped_as_page = false;
+	count--;
+
+	/* clear timestamp and dma mappings for remaining portion of packet */
+	while (count >= 0) {
+		count--;
+		i--;
+		if (i < 0)
+			i += tx_ring->count;
+		buffer_info = &tx_ring->buffer_info[i];
+		igbvf_put_txbuf(adapter, buffer_info);
+	}
+
+	return 0;
 }
 
 static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter,