XDP_UMEM_UNALIGNED_CHUNK_FLAG
XDP_UMEM_UNALIGNED_CHUNK_FLAG | \
bool unaligned_chunks = mr->flags & XDP_UMEM_UNALIGNED_CHUNK_FLAG;
bool unaligned = umem->flags & XDP_UMEM_UNALIGNED_CHUNK_FLAG;
cfg.flags |= XDP_UMEM_UNALIGNED_CHUNK_FLAG;
.flags = XDP_UMEM_UNALIGNED_CHUNK_FLAG | XDP_UMEM_TX_SW_CSUM |