i40e: Skip the priority tagging if DCB is not enabled

If DCB is not enabled priority tagging is not needed
so skip over that section.

Change-ID: Ia3f3fa07945b421259a9ca38329d6d1cbd6c6bcc
Signed-off-by: Neerav Parikh <neerav.parikh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index f8c863b..352dafe 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -2043,6 +2043,9 @@ static int i40e_tx_prepare_vlan_flags(struct sk_buff *skb,
                tx_flags |= I40E_TX_FLAGS_SW_VLAN;
        }
 
+       if (!(tx_ring->vsi->back->flags & I40E_FLAG_DCB_ENABLED))
+               goto out;
+
        /* Insert 802.1p priority into VLAN header */
        if ((tx_flags & (I40E_TX_FLAGS_HW_VLAN | I40E_TX_FLAGS_SW_VLAN)) ||
            (skb->priority != TC_PRIO_CONTROL)) {
@@ -2063,6 +2066,8 @@ static int i40e_tx_prepare_vlan_flags(struct sk_buff *skb,
                        tx_flags |= I40E_TX_FLAGS_HW_VLAN;
                }
        }
+
+out:
        *flags = tx_flags;
        return 0;
 }