New upstream version 17.11.5

[deb_dpdk.git] / drivers / net / thunderx / nicvf_rxtx.c

diff --git a/drivers/net/thunderx/nicvf_rxtx.c b/drivers/net/thunderx/nicvf_rxtx.c
index e27776e..7e8688b 100644 (file)
--- a/drivers/net/thunderx/nicvf_rxtx.c
+++ b/drivers/net/thunderx/nicvf_rxtx.c
@@ -89,6 +89,14 @@ fill_sq_desc_header(union sq_entry_t *entry, struct rte_mbuf *pkt)
        entry->buff[0] = sqe.buff[0];
 }
 
+static inline void __hot
+fill_sq_desc_header_zero_w1(union sq_entry_t *entry,
+                               struct rte_mbuf *pkt)
+{
+       fill_sq_desc_header(entry, pkt);
+       entry->buff[1] = 0ULL;
+}
+
 void __hot
 nicvf_single_pool_free_xmited_buffers(struct nicvf_txq *sq)
 {
@@ -190,12 +198,14 @@ nicvf_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
                free_desc -= TX_DESC_PER_PKT;
        }
 
-       sq->tail = tail;
-       sq->xmit_bufs += i;
-       rte_wmb();
+       if (likely(i)) {
+               sq->tail = tail;
+               sq->xmit_bufs += i;
+               rte_wmb();
 
-       /* Inform HW to xmit the packets */
-       nicvf_addr_write(sq->sq_door, i * TX_DESC_PER_PKT);
+               /* Inform HW to xmit the packets */
+               nicvf_addr_write(sq->sq_door, i * TX_DESC_PER_PKT);
+       }
        return i;
 }
 
@@ -230,7 +240,7 @@ nicvf_xmit_pkts_multiseg(void *tx_queue, struct rte_mbuf **tx_pkts,
                used_bufs += nb_segs;
 
                txbuffs[tail] = NULL;
-               fill_sq_desc_header(desc_ptr + tail, pkt);
+               fill_sq_desc_header_zero_w1(desc_ptr + tail, pkt);
                tail = (tail + 1) & qlen_mask;
 
                txbuffs[tail] = pkt;
@@ -246,13 +256,15 @@ nicvf_xmit_pkts_multiseg(void *tx_queue, struct rte_mbuf **tx_pkts,
                }
        }
 
-       sq->tail = tail;
-       sq->xmit_bufs += used_bufs;
-       rte_wmb();
+       if (likely(used_desc)) {
+               sq->tail = tail;
+               sq->xmit_bufs += used_bufs;
+               rte_wmb();
 
-       /* Inform HW to xmit the packets */
-       nicvf_addr_write(sq->sq_door, used_desc);
-       return nb_pkts;
+               /* Inform HW to xmit the packets */
+               nicvf_addr_write(sq->sq_door, used_desc);
+       }
+       return i;
 }
 
 static const uint32_t ptype_table[16][16] __rte_cache_aligned = {