From 33c66bd10fb0c07ba05a7b55b8ad0cd41cb0e68a Mon Sep 17 00:00:00 2001
From: John Fastabend <john.r.fastabend@intel.com>
Date: Tue, 18 May 2010 16:00:11 +0000
Subject: [PATCH] ixgbe: dcb, do not tag tc_prio_control frames
The network stack indicate packets should not be DCB
tagged by setting the priority to TC_PRIO_CONTROL. One
usage for this is lldp frames which are not suppossed
to be tagged.
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ixgbe/ixgbe_main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index d80bb1a77ecb..caf1114960ef 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -6075,7 +6075,8 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
}
tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
tx_flags |= IXGBE_TX_FLAGS_VLAN;
- } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+ } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED &&
+ skb->priority != TC_PRIO_CONTROL) {
tx_flags |= ((skb->queue_mapping & 0x7) << 13);
tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
tx_flags |= IXGBE_TX_FLAGS_VLAN;
--
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