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Current net-next's virtnet_xsk_xmit_one() does not consume XSK TX = checksum metadata and uses the shared zeroed virtio header. I found Xuan's 2021 proposal anticipating separate headers for checksum = support, and the merged 2024 zero-copy TX series,=20 but I couldn't find a checksum-specific follow-up implementation. The proposed scope is to map the existing XSK checksum metadata API to = VIRTIO_NET_F_CSUM,=20 using a DMA-safe per-packet virtio header whose lifetime extends until = TX completion, with corresponding completion, reset, and unbind cleanup. I would keep the initial scope limited to single-buffer TX: no = multi-buffer RX, timestamps, launch time, or GSO. I'd also add checksum and header-lifetime coverage using the existing = XSK selftest framework with QEMU/TAP. Is anyone already working on this? If not, does this scope and = per-packet-header approach sound reasonable for a follow-up patch? Thanks, Azadeh=