If the descriptor the device derive is handling is the context descriptor its 
type will be 0x1, so using the not expression, the device driver will consider 
the descriptor has been completed for transmission even its DD field is still 
0x1 which means NIC has't finished the operation on this descriptor. 

Signed-off-by: Zhe Tao <zhe.tao at intel.com>
---
 drivers/net/i40e/i40e_fdir.c |  3 ++-
 drivers/net/i40e/i40e_rxtx.c | 10 ++++++----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/net/i40e/i40e_fdir.c b/drivers/net/i40e/i40e_fdir.c
index 4bf98d0..f3cb757 100644
--- a/drivers/net/i40e/i40e_fdir.c
+++ b/drivers/net/i40e/i40e_fdir.c
@@ -1110,7 +1110,8 @@ i40e_fdir_filter_programming(struct i40e_pf *pf,

        for (i = 0; i < I40E_FDIR_WAIT_COUNT; i++) {
                rte_delay_us(I40E_FDIR_WAIT_INTERVAL_US);
-               if (txdp->cmd_type_offset_bsz &
+               if ((txdp->cmd_type_offset_bsz &
+                               rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) ==
                                rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))
                        break;
        }
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 2de0ac4..7c0c684 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -574,8 +574,9 @@ i40e_xmit_cleanup(struct i40e_tx_queue *txq)
                desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc);

        desc_to_clean_to = sw_ring[desc_to_clean_to].last_id;
-       if (!(txd[desc_to_clean_to].cmd_type_offset_bsz &
-               rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))) {
+       if ((txd[desc_to_clean_to].cmd_type_offset_bsz &
+                       rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) !=
+                       rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE)) {
                PMD_TX_FREE_LOG(DEBUG, "TX descriptor %4u is not done "
                        "(port=%d queue=%d)", desc_to_clean_to,
                                txq->port_id, txq->queue_id);
@@ -1431,8 +1432,9 @@ i40e_tx_free_bufs(struct i40e_tx_queue *txq)
        struct i40e_tx_entry *txep;
        uint16_t i;

-       if (!(txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
-                       rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE)))
+       if ((txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
+                       rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) !=
+                       rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))
                return 0;

        txep = &(txq->sw_ring[txq->tx_next_dd - (txq->tx_rs_thresh - 1)]);
-- 
1.8.4.2

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