add documents

lib/openflow/actions/set_queue.ex

@@ -1,18 +1,38 @@
 defmodule Openflow.Action.SetQueue do
+  @moduledoc """
+  Set queue id when outputting to a port
+  """
+
   defstruct(id: 0)
 
   alias __MODULE__
 
+  @type t :: %SetQueue{id: 0..0xFFFFFFFF}
+
+  @spec ofpat() :: 21
   def ofpat, do: 21
 
+  @doc """
+  Create a new set_queue action struct
+
+  ## Options:
+    - Queue id for the packets
+
+  ```elixir
+  iex> %SetQueue{id: 1} = SetQueue.new(_id = 1)
+  ```
+  """
+  @spec new(id :: 0..0xFFFFFFFF) :: t()
   def new(id) do
     %SetQueue{id: id}
   end
 
+  @spec to_binary(t()) :: <<_::16, _::_*8>>
   def to_binary(%SetQueue{id: id}) do
     <<21::16, 8::16, id::32>>
   end
 
+  @spec read(<<_::16, _::_*8>>) :: t()
   def read(<<21::16, 8::16, id::32>>) do
     %SetQueue{id: id}
   end