5G UPF dataplane processing architecture with TEID-based flow steering across four CPU cores, each handling ingress queue pairs (RXQ0/RXQ1) for parallel packet processing. Mobile Core Network traffic enters via NIC0, gets steered by TEID mask to dedicated cores, processes packets, and egresses via NIC1 to Internet Network with destination IP-based steering. Control Plane components—TEID Allocator, CPU Affinity Manager, and IP Allocator—manage queue assignments and resource allocation to optimize throughput and latency. This Kubernetes-native design demonstrates CPU pinning, queue-per-core isolation, and symmetric flow steering for carrier-grade 5G packet forwarding. Fork and customize this diagram on Diagrams.so to model your UPF topology, adjust core counts, or integrate with your CNF orchestration platform.