A reverse-engineered out-of-tree Linux driver for the Cavium CN6640-SNIC10E 10GbE SmartNIC exposes the card as two independent network interfaces over PCIe by programming unprogrammed PEM inbound registers. The card runs OpenWrt from RAM and achieves line-rate TX performance (9.7–9.8 Gb/s) with zero-copy while the host driver manages packet forwarding between shared-memory rings and kernel network interfaces.