diff options
| author | Manish Chopra <manish.chopra@qlogic.com> | 2016-03-15 07:13:45 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-20 15:40:42 +0900 |
| commit | fd87f95c015280aa087f04cbc1f7d8061e3b34a8 (patch) | |
| tree | f96e72b3c9a8b1ec8b1a16f5f71865b6f59d32af | |
| parent | d805f291ee2f594c015c9411d20d41e7e56f1bc6 (diff) | |
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: Sony Chacko <sony.chacko@qlogic.com>
Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/qlogic/qlge/qlge_main.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c b/drivers/net/ethernet/qlogic/qlge/qlge_main.c index 656c65ddadb4..e845eadaf8d0 100644 --- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c +++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c @@ -1648,7 +1648,18 @@ static void ql_process_mac_rx_skb(struct ql_adapter *qdev, return; } 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); + + 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; /* Frame error, so drop the packet. */ |