XDP_FLAGS_MODES
XDP_FLAGS_MODES | XDP_FLAGS_REPLACE)
unsigned int num_modes = hweight32(flags & XDP_FLAGS_MODES);
if (link && (flags & ~XDP_FLAGS_MODES)) {
if (hweight32(xdp_flags & XDP_FLAGS_MODES) > 1) {
XDP_FLAGS_MODES | XDP_FLAGS_REPLACE)
flags &= XDP_FLAGS_MODES;