netdev - [net-next 09/14] ixgbevf: Do not forward LLDP type frames

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Message-Id: <1351252702-16532-10-git-send-email-jeffrey.t.kirsher@intel.com>
Date:	Fri, 26 Oct 2012 04:58:17 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Greg Rose <gregory.v.rose@...el.com>, netdev@...r.kernel.org,
	gospo@...hat.com, sassmann@...hat.com,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 09/14] ixgbevf: Do not forward LLDP type frames

From: Greg Rose <gregory.v.rose@...el.com>

The driver should not forward LLDP type frames.  Inspect the ether type and
do not send if it is an LLDP ethertype frame.

Signed-off-by: Greg Rose <gregory.v.rose@...el.com>
Tested-by: Sibai Li <sibai.li@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 07d7eab..b5979ba 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -2968,6 +2968,11 @@ static int ixgbevf_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
 #if PAGE_SIZE > IXGBE_MAX_DATA_PER_TXD
 	unsigned short f;
 #endif
+	u8 *dst_mac = skb_header_pointer(skb, 0, 0, NULL);
+	if (!dst_mac || is_link_local(dst_mac)) {
+		dev_kfree_skb(skb);
+		return NETDEV_TX_OK;
+	}
 
 	tx_ring = &adapter->tx_ring[r_idx];
 
-- 
1.7.11.7

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