NETIF_VLAN_FILTERING_FEATURES
cur_vlan_fltr = netdev->features & NETIF_VLAN_FILTERING_FEATURES;
req_vlan_fltr = features & NETIF_VLAN_FILTERING_FEATURES;
features |= NETIF_VLAN_FILTERING_FEATURES;
features &= ~NETIF_VLAN_FILTERING_FEATURES;
features |= NETIF_VLAN_FILTERING_FEATURES;
features &= ~NETIF_VLAN_FILTERING_FEATURES;
NETIF_VLAN_FILTERING_FEATURES;
requested_vlan_features = features & NETIF_VLAN_FILTERING_FEATURES;
if (changed & NETIF_VLAN_FILTERING_FEATURES) {
if ((features & NETIF_VLAN_FILTERING_FEATURES) != NETIF_VLAN_FILTERING_FEATURES &&
(features & NETIF_VLAN_FILTERING_FEATURES) != 0) {
features &= ~NETIF_VLAN_FILTERING_FEATURES;
features |= netdev->features & NETIF_VLAN_FILTERING_FEATURES;