add Nicira Extension NXAST_AUTOPATH support

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

2 files changed, 28 insertions, 0 deletions

diff --git a/ryu/ofproto/ofproto_v1_0.py b/ryu/ofproto/ofproto_v1_0.py
index af34a4a6..08ae0f87 100644
--- a/ryu/ofproto/ofproto_v1_0.py
+++ b/ryu/ofproto/ofproto_v1_0.py
@@ -238,6 +238,7 @@ NXAST_REG_MOVE = 6
 NXAST_REG_LOAD = 7
 NXAST_SET_TUNNEL64 = 9
 NXAST_MULTIPATH = 10
+NXAST_AUTOPATH = 11
 NXAST_BUNDLE = 12
 NXAST_BUNDLE_LOAD = 13
 NXAST_RESUBMIT_TABLE = 14
@@ -272,6 +273,10 @@ NX_ACTION_BUNDLE_PACK_STR = '!HHIHHHHIHHI4x'
 NX_ACTION_BUNDLE_SIZE = 32
 assert calcsize(NX_ACTION_BUNDLE_PACK_STR) == NX_ACTION_BUNDLE_SIZE
 
+NX_ACTION_AUTOPATH_PACK_STR = '!HHIHHII4x'
+NX_ACTION_AUTOPATH_SIZE = 24
+assert calcsize(NX_ACTION_AUTOPATH_PACK_STR) == NX_ACTION_AUTOPATH_SIZE
+
 NX_ACTION_OUTPUT_REG_PACK_STR = '!HHIHHIH6x'
 NX_ACTION_OUTPUT_REG_SIZE = 24
 assert calcsize(NX_ACTION_OUTPUT_REG_PACK_STR) == NX_ACTION_OUTPUT_REG_SIZE
diff --git a/ryu/ofproto/ofproto_v1_0_parser.py b/ryu/ofproto/ofproto_v1_0_parser.py
index 8820e3be..e8db6098 100644
--- a/ryu/ofproto/ofproto_v1_0_parser.py
+++ b/ryu/ofproto/ofproto_v1_0_parser.py
@@ -661,6 +661,29 @@ class NXActionBundleLoad(NXActionBundleBase):
         return NXActionBundleBase.parser(NXActionBundleLoad, buf, offset)
 
 
+@NXActionHeader.register_nx_action_subtype(ofproto_v1_0.NXAST_AUTOPATH)
+class NXActionAutopath(NXActionHeader):
+    def __init__(self, ofs_nbits, dst, _id):
+        super(NXActionAutopath, self).__init__(
+            ofproto_v1_0.NXAST_AUTOPATH,
+            ofproto_v1_0.NX_ACTION_AUTOPATH_SIZE)
+        self.ofs_nbits = ofs_nbits
+        self.dst = dst
+        self.id = _id
+
+    def serialize(self, buf, offset):
+        msg_pack_into(ofproto_v1_0.NX_ACTION_OUTPUT_REG_PACK_STR, buf, offset,
+                      self.type, self.len, self.vendor, self.subtype,
+                      self.ofs_nbits, self.dst, self.id)
+
+    @classmethod
+    def parser(cls, buf, offset):
+        (type_, len_, vendor, subtype, ofs_nbits, dst,
+         _id) = struct.unpack_from(
+            ofproto_v1_0.NX_ACTION_AUTOPATH_PACK_STR, buf, offset)
+        return cls(ofs_nbits, dst, _id)
+
+
 @NXActionHeader.register_nx_action_subtype(ofproto_v1_0.NXAST_OUTPUT_REG)
 class NXActionOutputReg(NXActionHeader):
     def __init__(self, ofs_nbits, src, max_len):