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This commit is contained in:
Eishun Kondoh 2017-11-22 01:09:07 +09:00
parent b592219bd3
commit 2974723807
8 changed files with 507 additions and 13 deletions
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51
lib/openflow/match.ex
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@ -33,27 +33,54 @@ defmodule Openflow.Match do
end
def codec_header(oxm_field) when is_atom(oxm_field) do
oxm_field = case has_mask(oxm_field) do
1 ->
string = to_string(oxm_field)
"masked_" <> field = string
String.to_atom(field)
0 ->
oxm_field
end
case Openflow.Match.Field.vendor_of(oxm_field) do
oxm_class when oxm_class in [:nxm_0, :nxm_1, :openflow_basic, :packet_register] ->
oxm_class_int = Openflow.Enums.to_int(oxm_class, :oxm_class)
oxm_field_int = Openflow.Enums.to_int(oxm_field, oxm_class)
oxm_length = div(Openflow.Match.Field.n_bits_of(oxm_field), 8)
<<oxm_class_int::16, oxm_field_int::7, 0::1, oxm_length::8>>
experimenter when experimenter in [:nicira_ext_match, :onf_ext_match] ->
has_mask = has_mask(oxm_field)
<<oxm_class_int::16, oxm_field_int::7, has_mask::1, oxm_length::8>>
experimenter when experimenter in [:nicira_ext_match, :onf_ext_match, :hp_ext_match] ->
oxm_class_int = 0xffff
experimenter_int = Openflow.Enums.to_int(experimenter, :experimenter_oxm_vendors)
oxm_field_int = Openflow.Enums.to_int(oxm_field, experimenter)
oxm_length = div(Openflow.Match.Field.n_bits_of(oxm_field) + 4, 8)
<<oxm_class_int::16, oxm_field_int::7, 0::1, oxm_length::8, experimenter_int::32>>
has_mask = has_mask(oxm_field)
<<oxm_class_int::16, oxm_field_int::7, has_mask::1, oxm_length::8, experimenter_int::32>>
end
end
def codec_header(<<oxm_class_int::16, oxm_field_int::7, _oxm_has_mask::1, _oxm_length::8>>) do
def codec_header(<<oxm_class_int::16, oxm_field_int::7, oxm_has_mask::1, _oxm_length::8>>) do
oxm_class = Openflow.Enums.to_atom(oxm_class_int, :oxm_class)
Openflow.Enums.to_atom(oxm_field_int, oxm_class)
case oxm_has_mask do
0 -> Openflow.Enums.to_atom(oxm_field_int, oxm_class)
1 ->
field_str =
oxm_field_int
|> Openflow.Enums.to_atom(oxm_class)
|> to_string
String.to_atom("masked_" <> field_str)
end
end
def codec_header(<<0xffff::16, oxm_field_int::7, _oxm_has_mask::1, _oxm_length::8, experimenter_int::32>>) do
def codec_header(<<0xffff::16, oxm_field_int::7, oxm_has_mask::1, _oxm_length::8, experimenter_int::32>>) do
experimenter = Openflow.Enums.to_atom(experimenter_int, :experimenter_oxm_vendors)
Openflow.Enums.to_atom(oxm_field_int, experimenter)
case oxm_has_mask do
0 -> Openflow.Enums.to_atom(oxm_field_int, experimenter)
1 ->
field_str =
oxm_field_int
|> Openflow.Enums.to_atom(experimenter)
|> to_string
String.to_atom("masked_" <> field_str)
end
end
def header_size(<<_oxm_class_int::16, _oxm_field_int::7, _oxm_has_mask::1, _oxm_length::8, _::bytes>>),
@ -151,4 +178,16 @@ defmodule Openflow.Match do
match_class = Openflow.Match.Field.vendor_of(field_name)
%{class: match_class, field: field_name, has_mask: false, value: value_bin}
end
defp has_mask(oxm_field) when is_atom(oxm_field) do
has_mask? =
oxm_field
|> to_string
|> String.match?(~r/^masked_/)
if has_mask? do
1
else
0
end
end
end