[112/118] r8169: fix 8168evl frame padding.

Ben Hutchings
2013-05-10T14:20:11Z

From: Francois Romieu <romieu@fr.zoreil.com>

From: Stefan Bader <stefan.bader@canonical.com>

commit e5195c1f31f399289347e043d6abf3ffa80f0005 upstream.

Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: hayeswang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/net/ethernet/realtek/r8169.c | 9 +++++++++
1 file changed, 9 insertions(+)

--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -5566,6 +5566,14 @@ static netdev_tx_t rtl8169_start_xmit(st
goto err_stop_0;
}

+ /* 8168evl does not automatically pad to minimum length. */
+ if (unlikely(tp->mac_version == RTL_GIGA_MAC_VER_34 &&
+ skb->len < ETH_ZLEN)) {
+ if (skb_padto(skb, ETH_ZLEN))
+ goto err_update_stats;
+ skb_put(skb, ETH_ZLEN - skb->len);
+ }
+
if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
goto err_stop_0;

@@ -5633,6 +5641,7 @@ err_dma_1:
rtl8169_unmap_tx_skb(d, tp->tx_skb + entry, txd);
err_dma_0:
dev_kfree_skb(skb);
+err_update_stats:
dev->stats.tx_dropped++;
return NETDEV_TX_OK;