34 lines
972 B
Elixir
34 lines
972 B
Elixir
defmodule Openflow.Action.SetField do
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defstruct(field: nil)
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alias __MODULE__
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@set_field_size 8
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def ofpat, do: 25
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def new([{_field, _value}] = oxm_field) do
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%SetField{field: oxm_field}
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end
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def to_binary(%SetField{field: field}) do
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match_bin =
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field
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|> Openflow.Match.new()
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|> Openflow.Match.to_binary()
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<<1::16, _length::16, padded_field::bytes>> = match_bin
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patial_len = @set_field_size - 4 + byte_size(padded_field)
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padding = Openflow.Utils.padding(patial_len, 8)
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length = patial_len + padding
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<<25::16, length::16, padded_field::bytes, 0::size(padding)-unit(8)>>
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end
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def read(<<25::16, _length::16, match_field_bin::bytes>>) do
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<<_class::16, _field::7, _hm::1, flen::8, _rest::bytes>> = match_field_bin
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match_len = 4 + 4 + flen
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match_bin = <<1::16, match_len::16, match_field_bin::bytes>>
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{[field | _], _rest} = Openflow.Match.read(match_bin)
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%SetField{field: [field]}
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end
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end
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