* bitmap of "enum ofp_port_features" bits, in host byte order. Returns 0 if
* successful, otherwise a positive errno value. */
static int
-netdev_linux_get_features(struct netdev *netdev,
+netdev_linux_get_features(const struct netdev *netdev,
uint32_t *current, uint32_t *advertised,
uint32_t *supported, uint32_t *peer)
{