This enabls a vendor to register vendor's specific parser to handle
Switch to Controller Vendor messages.

An object that vendor's parser returns is placed at msg.data.

Signed-off-by: FUJITA Tomonori <[email protected]>
---
 ryu/ofproto/ofproto_v1_0_parser.py |   17 ++++++++++++++++-
 1 files changed, 16 insertions(+), 1 deletions(-)

diff --git a/ryu/ofproto/ofproto_v1_0_parser.py 
b/ryu/ofproto/ofproto_v1_0_parser.py
index b3a7cb4..efff7e5 100644
--- a/ryu/ofproto/ofproto_v1_0_parser.py
+++ b/ryu/ofproto/ofproto_v1_0_parser.py
@@ -966,6 +966,15 @@ class OFPEchoReply(MsgBase):
 @_register_parser
 @_set_msg_type(ofproto_v1_0.OFPT_VENDOR)
 class OFPVendor(MsgBase):
+    _VENDORS = {}
+
+    @staticmethod
+    def register_vendor(_id):
+        def _register_vendor(cls):
+            OFPVendor._VENDORS[_id] = cls
+            return cls
+        return _register_vendor
+
     def __init__(self, datapath):
         super(OFPVendor, self).__init__(datapath)
         self.data = None
@@ -978,7 +987,13 @@ class OFPVendor(MsgBase):
         (msg.vendor,) = struct.unpack_from(
             ofproto_v1_0.OFP_VENDOR_HEADER_PACK_STR, msg.buf,
             ofproto_v1_0.OFP_HEADER_SIZE)
-        msg.data = msg.buf[ofproto_v1_0.OFP_VENDOR_HEADER_SIZE:]
+
+        cls_ = cls._VENDORS.get(msg.vendor)
+        if cls_:
+            msg.data = cls_.parser(datapath, msg.buf, 0)
+        else:
+            msg.data = msg.buf[ofproto_v1_0.OFP_VENDOR_HEADER_SIZE:]
+
         return msg
 
     def serialize_header(self):
-- 
1.7.4.4


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