45 lines
1 KiB
Elixir
45 lines
1 KiB
Elixir
defmodule Openflow.Action.NxStackPop do
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defstruct(
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n_bits: 0,
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offset: 0,
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field: nil
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)
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@experimenter 0x00002320
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@nxast 28
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alias __MODULE__
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alias Openflow.Action.Experimenter
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def new(options) do
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field = options[:field] || raise "field must be specified"
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default_n_bits = Openflow.Match.Field.n_bits_of(field)
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%NxStackPop{
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n_bits: options[:n_bits] || default_n_bits,
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offset: options[:offset] || 0,
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field: field
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}
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end
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def to_binary(%NxStackPop{} = stack_pop) do
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field_bin = Openflow.Match.codec_header(stack_pop.field)
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Experimenter.pack_exp_header(<<
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@experimenter::32,
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@nxast::16,
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stack_pop.offset::16,
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field_bin::4-bytes,
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stack_pop.n_bits::16,
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0::size(6)-unit(8)
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>>)
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end
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def read(
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<<@experimenter::32, @nxast::16, ofs::16, field_bin::4-bytes, n_bits::16,
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_::size(6)-unit(8)>>
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) do
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field = Openflow.Match.codec_header(field_bin)
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%NxStackPop{n_bits: n_bits, offset: ofs, field: field}
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end
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end
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