43 lines
926 B
Elixir
43 lines
926 B
Elixir
defmodule Openflow.Action.PopMpls do
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@moduledoc """
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Pop the out MPLS label
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note: The one of ETH__P_MPLS_* is needed to be specified to eth_type field
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send_flow_mod_add(
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datapath_id,
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match: Match.new(0x8847),
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instructions: ApplyActions.new(PopMpls.new())
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)
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"""
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defstruct(ethertype: 0x8847)
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alias __MODULE__
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@type t :: %PopMpls{}
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@eth_p_mpls_uc 0x8847
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@spec ofpat() :: 20
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def ofpat, do: 20
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@doc """
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Create a new pop_mpls action struct
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0x8847(ETH_P_MPLS_UC) as default value.
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"""
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@spec new() :: t()
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@spec new(ethertype :: 0..0xFFFF) :: t()
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def new(ethertype \\ @eth_p_mpls_uc) do
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%PopMpls{ethertype: ethertype}
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end
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def to_binary(%PopMpls{ethertype: ethertype}) do
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<<20::16, 8::16, ethertype::16, 0::size(2)-unit(8)>>
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end
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def read(<<20::16, 8::16, ethertype::16, 0::size(2)-unit(8)>>) do
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%PopMpls{ethertype: ethertype}
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end
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end
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