qlcnic: remove assumption that vlan_tci != 0

VLAN.TCI == 0 is perfectly valid (802.1p), so allow it to be accelerated.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
index 9647578cbe6a..14f26bf3b388 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -459,7 +459,7 @@ static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
                          struct cmd_desc_type0 *first_desc, struct sk_buff *skb,
                          struct qlcnic_host_tx_ring *tx_ring)
 {
-        u8 l4proto, opcode = 0, hdr_len = 0;
+        u8 l4proto, opcode = 0, hdr_len = 0, tag_vlan = 0;
         u16 flags = 0, vlan_tci = 0;
         int copied, offset, copy_len, size;
         struct cmd_desc_type0 *hwdesc;
@@ -472,14 +472,16 @@ static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
                 flags = QLCNIC_FLAGS_VLAN_TAGGED;
                 vlan_tci = ntohs(vh->h_vlan_TCI);
                 protocol = ntohs(vh->h_vlan_encapsulated_proto);
+                tag_vlan = 1;
         } else if (skb_vlan_tag_present(skb)) {
                 flags = QLCNIC_FLAGS_VLAN_OOB;
                 vlan_tci = skb_vlan_tag_get(skb);
+                tag_vlan = 1;
         }
         if (unlikely(adapter->tx_pvid)) {
-                if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
+                if (tag_vlan && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
                         return -EIO;
-                if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED))
+                if (tag_vlan && (adapter->flags & QLCNIC_TAGGING_ENABLED))
                         goto set_flags;
 
                 flags = QLCNIC_FLAGS_VLAN_OOB;