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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>
This commit is contained in:
John Fastabend 2010-05-18 16:00:11 +00:00 committed by David S. Miller
parent 7483d9ddaf
commit 33c66bd10f
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ixgbe/ixgbe_main.c
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@ -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;