ice_sched_get_first_node
qgrp_node = ice_sched_get_first_node(pi, vsi_node, qgrp_layer);
qgrp_node = ice_sched_get_first_node(pi, vsi_node, qgrp_layer);
node = ice_sched_get_first_node(pi, tc_node, vsi_layer);
node = ice_sched_get_first_node(pi, tc_node, agg_layer);
node = ice_sched_get_first_node(pi, tc_node, (u8)i);
parent = ice_sched_get_first_node(pi, tc_node, i);
p = ice_sched_get_first_node(pi, node, node->tx_sched_layer);
prev = ice_sched_get_first_node(pi, tc_node, layer);