From: Ron Mercer <ron.mercer@qlogic.com>
Date: Tue, 9 Jun 2009 05:39:28 +0000 (+0000)
Subject: qlge: Drop inbound frames > MTU.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ec33a49135d96df56ef106a49c2434ca81f821f9;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

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>
---

diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 0775b4d7d3f..738691ddcc0 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) {