app/testpmd: prefetch data in the forwarding loop

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

diff --git a/app/test-pmd/macswap.c b/app/test-pmd/macswap.c
index 154889d..c10f4b5 100644 (file)
--- a/app/test-pmd/macswap.c
+++ b/app/test-pmd/macswap.c
@@ -113,6 +113,9 @@ pkt_burst_mac_swap(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 *);