VLAN based Packet Processing

Hi team,

When we perform VLAN tagged packet transmission using rte_eth_tx_burst(), does the dpdk library will enqueue the packets to different CoS queues baseed upon QoS priority ? Provided ports are configured in DCB mode.

Similarly while reception rte_eth_rx_burst(), does it poll all the CoS queues and dequeue the packets based on priority of queue ?

Finally want to know, what scheduling is employed to dequeue the packets from different QoS queues ?

Thanks in advance,
Sunil