Because OVS 2.9.0 does not yet support the OXS(EXT-334), in order to use
``OFPMP_FLOW_STATS``, ``OFPMP_AGGREGATE_STATS`` and
``OFPT_FLOW_REMOVED`` messages, we need to use parsers for the OpenFlow
version 1.4.
This patch adds an utility function to disable EXT-334 features and to
use the OpenFlow 1.4 parsers for these messages.
Signed-off-by: IWASE Yusuke <iwase.yusu...@gmail.com>
---
ryu/ofproto/ofproto_v1_5_parser.py | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/ryu/ofproto/ofproto_v1_5_parser.py
b/ryu/ofproto/ofproto_v1_5_parser.py
index 0394662..f635e53 100644
--- a/ryu/ofproto/ofproto_v1_5_parser.py
+++ b/ryu/ofproto/ofproto_v1_5_parser.py
@@ -59,6 +59,36 @@ def msg_parser(datapath, version, msg_type, msg_len, xid,
buf):
return parser(datapath, version, msg_type, msg_len, xid, buf)
+def disable_ext_334():
+ """
+ Disables features related to EXT-334.
+
+ Because OVS 2.9.0 does not yet support the OXS(EXT-334), in order to use
+ ``OFPMP_FLOW_STATS``, ``OFPMP_AGGREGATE_STATS`` and ``OFPT_FLOW_REMOVED``
+ messages, we need to use parsers for the OpenFlow 1.4.
+
+ After calling this function, ``OFPFlowDescStatsReply`` has the same
+ structure of ``ofproto_v1_4_parser.OFPFlowStatsReply``,
+ ``OFPAggregateStatsReply`` and ``OFPFlowRemoved`` have the same structures
+ of each corresponding parsers of ``ofproto_v1_4_parser``.
+ """
+ from ryu.ofproto import ofproto_v1_4_parser
+
+ # OFPMP_FLOW_DESC/OFPMP_FLOW_STATS
+ # Note: OFPMP_FLOW_STATS in OpenFlow 1.4 or earlier is renamed to
+ # OFPMP_FLOW_DESC in OpenFlow 1.5
+ OFPFlowDescStatsReply.cls_stats_body_cls = \
+ ofproto_v1_4_parser.OFPFlowStats
+
+ # OFPMP_AGGREGATE_STATS
+ OFPAggregateStatsReply.cls_stats_body_cls = \
+ ofproto_v1_4_parser.OFPAggregateStats
+
+ # OFPT_FLOW_REMOVED
+ _MSG_PARSERS[OFPFlowRemoved.cls_msg_type] = \
+ ofproto_v1_4_parser.OFPFlowRemoved.parser
+
+
@_register_parser
@_set_msg_type(ofproto.OFPT_HELLO)
class OFPHello(MsgBase):
--
2.7.4
------------------------------------------------------------------------------
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