Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a10d14a2 authored by Manish Chopra's avatar Manish Chopra Committed by Sasha Levin
Browse files

qlge: Fix receive packets drop. 



[ Upstream commit 2c9a266afefe137bff06bbe0fc48b4d3b3cb348c ]

When running small packets [length < 256 bytes] traffic, packets were
being dropped due to invalid data in those packets which were
delivered by the driver upto the stack. Using pci_dma_sync_single_for_cpu
ensures copying latest and updated data into skb from the receive buffer.

Signed-off-by: default avatarSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: default avatarManish Chopra <manish.chopra@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <sasha.levin@oracle.com>
parent 6d94f015

drivers/net/ethernet/qlogic/qlge/qlge_main.c

+11 −0
Original line number Original line Diff line number Diff line
@@ -1648,7 +1648,18 @@ static void ql_process_mac_rx_skb(struct ql_adapter *qdev, 
		return;

		return;

	}

	}

	skb_reserve(new_skb, NET_IP_ALIGN);

	skb_reserve(new_skb, NET_IP_ALIGN);



	pci_dma_sync_single_for_cpu(qdev->pdev,

				    dma_unmap_addr(sbq_desc, mapaddr),

				    dma_unmap_len(sbq_desc, maplen),

				    PCI_DMA_FROMDEVICE);



	memcpy(skb_put(new_skb, length), skb->data, length);

	memcpy(skb_put(new_skb, length), skb->data, length);



	pci_dma_sync_single_for_device(qdev->pdev,

				       dma_unmap_addr(sbq_desc, mapaddr),

				       dma_unmap_len(sbq_desc, maplen),

				       PCI_DMA_FROMDEVICE);

	skb = new_skb;

	skb = new_skb;





	/* Frame error, so drop the packet. */

	/* Frame error, so drop the packet. */