+ /* Check for LACP control packets and send if available */
+ for (i = 0; i < slave_count; i++) {
+ struct port *port = &bond_mode_8023ad_ports[slave_port_ids[i]];
+ struct rte_mbuf *ctrl_pkt = NULL;
+
+ if (likely(rte_ring_empty(port->tx_ring)))
+ continue;
+
+ if (rte_ring_dequeue(port->tx_ring,
+ (void **)&ctrl_pkt) != -ENOENT) {
+ slave_tx_count = rte_eth_tx_burst(slave_port_ids[i],
+ bd_tx_q->queue_id, &ctrl_pkt, 1);
+ /*
+ * re-enqueue LAG control plane packets to buffering
+ * ring if transmission fails so the packet isn't lost.
+ */
+ if (slave_tx_count != 1)
+ rte_ring_enqueue(port->tx_ring, ctrl_pkt);
+ }
+ }
+
+ if (unlikely(nb_bufs == 0))
+ return 0;
+