app/testpmd: add retry option

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

diff --git a/app/test-pmd/flowgen.c b/app/test-pmd/flowgen.c
index 18b754b..a6abe91 100644 (file)
--- a/app/test-pmd/flowgen.c
+++ b/app/test-pmd/flowgen.c
@@ -131,6 +131,7 @@ pkt_burst_flow_gen(struct fwd_stream *fs)
        uint16_t nb_tx;
        uint16_t nb_pkt;
        uint16_t i;
+       uint32_t retry;
 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
        uint64_t start_tsc;
        uint64_t end_tsc;
@@ -207,6 +208,17 @@ pkt_burst_flow_gen(struct fwd_stream *fs)
        }
 
        nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt);
+       /*
+        * 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