46 lines
1.4 KiB
Elixir
46 lines
1.4 KiB
Elixir
defmodule Openflow.Action.NxCheckPktLarger do
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defstruct(
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pkt_len: 0,
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offset: 0,
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dst_field: nil
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)
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@experimenter 0x00002320
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@nxast 49
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alias __MODULE__
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alias Openflow.Action.Experimenter
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@type t :: %NxCheckPktLarger{dst_field: atom(), pkt_len: 0..0xFFFF, offset: 0..0xFFFF}
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@spec new(dst_field: atom(), pkt_len: 0..0xFFFF, offset: 0..0xFFFF) :: t()
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def new(options \\ []) do
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dst_field = options[:dst_field] || raise "dst_field must be specified"
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pkt_len = options[:pkt_len] || raise "pkt_len must be specified"
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ofs = Keyword.get(options, :offset, 0)
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%NxCheckPktLarger{dst_field: dst_field, pkt_len: pkt_len, offset: ofs}
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end
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@spec to_binary(t()) :: binary()
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def to_binary(%NxCheckPktLarger{} = pkt_larger) do
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dst_field_bin = Openflow.Match.codec_header(pkt_larger.dst_field)
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pkt_len = pkt_larger.pkt_len
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ofs = pkt_larger.offset
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Experimenter.pack_exp_header(<<
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@experimenter::32,
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@nxast::16,
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pkt_len::16,
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ofs::16,
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dst_field_bin::4-bytes,
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0::size(10)-unit(8)
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>>)
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end
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@spec read(binary()) :: t()
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def read(<<@experimenter::32, @nxast::16, body::bytes>>) do
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<<pkt_len::16, ofs::16, dst_field_bin::4-bytes, _::bytes>> = body
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dst_field = Openflow.Match.codec_header(dst_field_bin)
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%NxCheckPktLarger{dst_field: dst_field, pkt_len: pkt_len, offset: ofs}
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end
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end
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