This will be used by meter statistics messages
Signed-off-by: Simon Horman <[email protected]>
---
ryu/ofproto/ofproto_v1_4.py | 6 +++++
ryu/ofproto/ofproto_v1_4_parser.py | 54 ++++++++++++++++++++++++++++++++++++++
2 files changed, 60 insertions(+)
diff --git a/ryu/ofproto/ofproto_v1_4.py b/ryu/ofproto/ofproto_v1_4.py
index 70f7b45..acdf627 100644
--- a/ryu/ofproto/ofproto_v1_4.py
+++ b/ryu/ofproto/ofproto_v1_4.py
@@ -653,6 +653,12 @@ OFPMF_PKTPS = 1 << 1 # Rate value in packet/sec.
OFPMF_BURST = 1 << 2 # Do burst size.
OFPMF_STATS = 1 << 3 # Collect statistics.
+# struct ofp_meter_band_header
+OFP_METER_BAND_HEADER_PACK_STR = '!HHII'
+OFP_METER_BAND_HEADER_SIZE = 12
+assert (calcsize(OFP_METER_BAND_HEADER_PACK_STR) ==
+ OFP_METER_BAND_HEADER_SIZE)
+
# struct ofp_meter_mod
OFP_METER_MOD_PACK_STR = '!HHI'
OFP_METER_MOD_SIZE = 16
diff --git a/ryu/ofproto/ofproto_v1_4_parser.py
b/ryu/ofproto/ofproto_v1_4_parser.py
index 0578c6e..4b35a30 100644
--- a/ryu/ofproto/ofproto_v1_4_parser.py
+++ b/ryu/ofproto/ofproto_v1_4_parser.py
@@ -2127,6 +2127,60 @@ class OFPGroupFeaturesStatsReply(OFPMultipartReply):
super(OFPGroupFeaturesStatsReply, self).__init__(datapath, **kwargs)
+class OFPMeterBand(StringifyMixin):
+ def __init__(self, type_, len_):
+ super(OFPMeterBand, self).__init__()
+ self.type = type_
+ self.len = len_
+
+
+class OFPMeterBandHeader(OFPMeterBand):
+ _METER_BAND = {}
+
+ @staticmethod
+ def register_meter_band_type(type_, len_):
+ def _register_meter_band_type(cls):
+ OFPMeterBandHeader._METER_BAND[type_] = cls
+ cls.cls_meter_band_type = type_
+ cls.cls_meter_band_len = len_
+ return cls
+ return _register_meter_band_type
+
+ def __init__(self):
+ cls = self.__class__
+ super(OFPMeterBandHeader, self).__init__(cls.cls_meter_band_type,
+ cls.cls_meter_band_len)
+
+ @classmethod
+ def parser(cls, buf, offset):
+ type_, len_, _rate, _burst_size = struct.unpack_from(
+ ofproto.OFP_METER_BAND_HEADER_PACK_STR, buf, offset)
+ cls_ = cls._METER_BAND[type_]
+ assert cls_.cls_meter_band_len == len_
+ return cls_.parser(buf, offset)
+
+
[email protected]_meter_band_type(
+ ofproto.OFPMBT_DROP, ofproto.OFP_METER_BAND_DROP_SIZE)
+class OFPMeterBandDrop(OFPMeterBandHeader):
+ def __init__(self, rate, burst_size, type_=None, len_=None):
+ super(OFPMeterBandDrop, self).__init__()
+ self.rate = rate
+ self.burst_size = burst_size
+
+ def serialize(self, buf, offset):
+ msg_pack_into(ofproto.OFP_METER_BAND_DROP_PACK_STR, buf, offset,
+ self.type, self.len, self.rate, self.burst_size)
+
+ @classmethod
+ def parser(cls, buf, offset):
+ type_, len_, rate, burst_size = struct.unpack_from(
+ ofproto.OFP_METER_BAND_DROP_PACK_STR, buf, offset)
+ assert cls.cls_meter_band_type == type_
+ assert cls.cls_meter_band_len == len_
+ return cls(rate, burst_size)
+
+
class OFPExperimenterMultipart(ofproto_parser.namedtuple(
'OFPExperimenterMultipart',
('experimenter', 'exp_type', 'data'))):
--
1.8.5.2
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