41 lines
1.2 KiB
Elixir
41 lines
1.2 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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def new(options) do
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field = Keyword.get(options, :field)
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default_n_bits = Openflow.Match.Field.n_bits_of(field)
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n_bits = Keyword.get(options, :n_bits, default_n_bits)
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ofs = Keyword.get(options, :offset, 0)
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%NxStackPop{n_bits: n_bits, offset: ofs, field: field}
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end
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def to_binary(%NxStackPop{n_bits: n_bits, offset: ofs, field: field}) do
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field_bin = Openflow.Match.codec_header(field)
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exp_body =
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<<@experimenter::32, @nxast::16, ofs::16, field_bin::4-bytes, n_bits::16,
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0::size(6)-unit(8)>>
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exp_body_size = byte_size(exp_body)
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padding_length = Openflow.Utils.padding(4 + exp_body_size, 8)
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length = 4 + exp_body_size + padding_length
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<<0xFFFF::16, length::16, exp_body::bytes, 0::size(padding_length)-unit(8)>>
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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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