app/testpmd: add retry option

[dpdk.git] / app / test-pmd / macswap.c

diff --git a/app/test-pmd/macswap.c b/app/test-pmd/macswap.c
index c10f4b5..4b0dbeb 100644 (file)
--- a/app/test-pmd/macswap.c
+++ b/app/test-pmd/macswap.c
@@ -84,6 +84,7 @@ pkt_burst_mac_swap(struct fwd_stream *fs)
        uint16_t nb_rx;
        uint16_t nb_tx;
        uint16_t i;
+       uint32_t retry;
        uint64_t ol_flags = 0;
 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
        uint64_t start_tsc;
@@ -131,6 +132,17 @@ pkt_burst_mac_swap(struct fwd_stream *fs)
                mb->vlan_tci_outer = txp->tx_vlan_id_outer;
        }
        nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx);
+       /*
+        * Retry if necessary
+        */
+       if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
+               retry = 0;
+               while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
+                       rte_delay_us(burst_tx_delay_time);
+                       nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
+                                       &pkts_burst[nb_tx], nb_rx - nb_tx);
+               }
+       }
        fs->tx_packets += nb_tx;
 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
        fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;