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-rw-r--r--app/test-pmd/macfwd.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/app/test-pmd/macfwd.c b/app/test-pmd/macfwd.c
index 3b7fffb7..5d1c1617 100644
--- a/app/test-pmd/macfwd.c
+++ b/app/test-pmd/macfwd.c
@@ -81,6 +81,7 @@ pkt_burst_mac_forward(struct fwd_stream *fs)
struct rte_port *txp;
struct rte_mbuf *mb;
struct ether_hdr *eth_hdr;
+ uint32_t retry;
uint16_t nb_rx;
uint16_t nb_tx;
uint16_t i;
@@ -113,6 +114,9 @@ pkt_burst_mac_forward(struct fwd_stream *fs)
if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ)
ol_flags |= PKT_TX_QINQ_PKT;
for (i = 0; i < nb_rx; i++) {
+ if (likely(i < nb_rx - 1))
+ rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
+ void *));
mb = pkts_burst[i];
eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);
ether_addr_copy(&peer_eth_addrs[fs->peer_addr],
@@ -126,6 +130,18 @@ pkt_burst_mac_forward(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]++;