This invention discloses a bypass transmission architecture for encrypted
network interface cards (NICs) based on parallel
feature extraction. The architecture includes: a packet
stream input interface, a control path unit, a
data path unit, a decision window merging unit, a fragmentation-aware incremental
checksum correction engine unit, and a security
control unit. This invention can reduce forwarding latency, improve transmission
determinism and
resource utilization, and enhance
packet forwarding efficiency in high-speed network scenarios. By using a deterministic
delay storage module that matches worst-case latency, timing synchronization between
control flow and data flow is achieved, reducing the risk of timing races and rule misjudgments. Simultaneously, the fragmentation-aware incremental
checksum correction engine reduces the risks of insufficient fragmentation packet compatibility,
checksum miscalculations, and resulting
packet loss in traditional solutions.