pub const MapCreateAttr = extern struct {
    /// one of MapType
    map_type: u32,

    /// size of key in bytes
    key_size: u32,

    /// size of value in bytes
    value_size: u32,

    /// max number of entries in a map
    max_entries: u32,

    /// .map_create related flags
    map_flags: u32,

    /// fd pointing to the inner map
    inner_map_fd: fd_t,

    /// numa node (effective only if MapCreateFlags.numa_node is set)
    numa_node: u32,
    map_name: [obj_name_len]u8,

    /// ifindex of netdev to create on
    map_ifindex: u32,

    /// fd pointing to a BTF type data
    btf_fd: fd_t,

    /// BTF type_id of the key
    btf_key_type_id: u32,

    /// BTF type_id of the value
    bpf_value_type_id: u32,

    /// BTF type_id of a kernel struct stored as the map value
    btf_vmlinux_value_type_id: u32,
}