qlge: Drop inbound frames > MTU.

The max frame size register is set higher than the MTU to
accomodate FCoE frames.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 0775b4d7d3ff..738691ddcc04 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -1532,6 +1532,15 @@ static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
                 dev_kfree_skb_any(skb);
                 return;
         }
+
+        /* The max framesize filter on this chip is set higher than
+         * MTU since FCoE uses 2k frames.
+         */
+        if (skb->len > ndev->mtu + ETH_HLEN) {
+                dev_kfree_skb_any(skb);
+                return;
+        }
+
         prefetch(skb->data);
         skb->dev = ndev;
         if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {