IFLA_NETKIT_HEADROOM
if (data[IFLA_NETKIT_HEADROOM])
headroom = nla_get_u16(data[IFLA_NETKIT_HEADROOM]);
{ IFLA_NETKIT_HEADROOM, "headroom" },
if (nla_put_u16(skb, IFLA_NETKIT_HEADROOM, dev->needed_headroom))
[IFLA_NETKIT_HEADROOM] = { .type = NLA_U16 },
addattr16(&req.n, sizeof(req), IFLA_NETKIT_HEADROOM, NETKIT_HEADROOM);