Add Nicira Extension NXT_SET_PACKET_IN_FORMAT support

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reviewed-by: Isaku Yamahata <yamahata@valinux.co.jp>
Reviewed-by: Simon Horman <horms@verge.net.au>

ryu/ofproto/ofproto_v1_0.py

@@ -573,6 +573,7 @@
 NXT_FLOW_MOD = 13
 NXT_FLOW_REMOVED = 14
 NXT_FLOW_MOD_TABLE_ID = 15
+NXT_SET_PACKET_IN_FORMAT = 16
 NXT_SET_CONTROLLER_ID = 20
 
 # enum nx_role
@@ -584,6 +585,10 @@
 NXFF_OPENFLOW10 = 0
 NXFF_NXM = 2
 
+# enum nx_packet_in_format
+NXPIF_OPENFLOW10 = 0
+NXPIF_NXM = 1
+
 NICIRA_HEADER_PACK_STR = '!II'
 NICIRA_HEADER_SIZE = 16
 assert (calcsize(NICIRA_HEADER_PACK_STR) +
@@ -614,6 +619,11 @@
 assert (calcsize(NX_FLOW_MOD_TABLE_ID_PACK_STR) +
         NICIRA_HEADER_SIZE == NX_FLOW_MOD_TABLE_ID_SIZE)
 
+NX_SET_PACKET_IN_FORMAT_PACK_STR = '!I'
+NX_SET_PACKET_IN_FORMAT_SIZE = 20
+assert (calcsize(NX_SET_PACKET_IN_FORMAT_PACK_STR) +
+        NICIRA_HEADER_SIZE == NX_SET_PACKET_IN_FORMAT_SIZE)
+
 NX_CONTROLLER_ID_PACK_STR = '!6xH'
 NX_CONTROLLER_ID_SIZE = 24
 assert (calcsize(NX_CONTROLLER_ID_PACK_STR) +

ryu/ofproto/ofproto_v1_0_parser.py

@@ -1355,6 +1355,19 @@ def parser(cls, datapath, buf, offset):
                    byte_count, match)
 
 
+class NXTSetPacketInFormat(NiciraHeader):
+    def __init__(self, datapath, packet_in_format):
+        super(NXTSetPacketInFormat, self).__init__(
+            datapath, ofproto_v1_0.NXT_SET_PACKET_IN_FORMAT)
+        self.format = packet_in_format
+
+    def _serialize_body(self):
+        self.serialize_header()
+        msg_pack_into(ofproto_v1_0.NX_SET_PACKET_IN_FORMAT_PACK_STR,
+                      self.buf, ofproto_v1_0.NICIRA_HEADER_SIZE,
+                      self.format)
+
+
 class NXTSetControllerId(NiciraHeader):
     def __init__(self, datapath, controller_id):
         super(NXTSetControllerId, self).__init__(