examples/l3fwd: remove useless reloads in EM main loop

[dpdk.git] / examples / l3fwd / l3fwd_em.c

diff --git a/examples/l3fwd/l3fwd_em.c b/examples/l3fwd/l3fwd_em.c
index 01f8dff..43fc761 100644 (file)
--- a/examples/l3fwd/l3fwd_em.c
+++ b/examples/l3fwd/l3fwd_em.c
@@ -632,14 +632,16 @@ em_main_loop(__rte_unused void *dummy)
        lcore_id = rte_lcore_id();
        qconf = &lcore_conf[lcore_id];
 
-       if (qconf->n_rx_queue == 0) {
+       const uint16_t n_rx_q = qconf->n_rx_queue;
+       const uint16_t n_tx_p = qconf->n_tx_port;
+       if (n_rx_q == 0) {
                RTE_LOG(INFO, L3FWD, "lcore %u has nothing to do\n", lcore_id);
                return 0;
        }
 
        RTE_LOG(INFO, L3FWD, "entering main loop on lcore %u\n", lcore_id);
 
-       for (i = 0; i < qconf->n_rx_queue; i++) {
+       for (i = 0; i < n_rx_q; i++) {
 
                portid = qconf->rx_queue_list[i].port_id;
                queueid = qconf->rx_queue_list[i].queue_id;
@@ -659,7 +661,7 @@ em_main_loop(__rte_unused void *dummy)
                diff_tsc = cur_tsc - prev_tsc;
                if (unlikely(diff_tsc > drain_tsc)) {
 
-                       for (i = 0; i < qconf->n_tx_port; ++i) {
+                       for (i = 0; i < n_tx_p; ++i) {
                                portid = qconf->tx_port_id[i];
                                if (qconf->tx_mbufs[portid].len == 0)
                                        continue;
@@ -675,7 +677,7 @@ em_main_loop(__rte_unused void *dummy)
                /*
                 * Read packet from RX queues
                 */
-               for (i = 0; i < qconf->n_rx_queue; ++i) {
+               for (i = 0; i < n_rx_q; ++i) {
                        portid = qconf->rx_queue_list[i].port_id;
                        queueid = qconf->rx_queue_list[i].queue_id;
                        nb_rx = rte_eth_rx_burst(portid, queueid, pkts_burst,