make osmpy IPA code aware of RSPRO

RSPRO (Remote Sim PROtocol) is used by osmo-remsim and basd on the IPA
multiplex.  Let's add knowledge about this stream identifier to osmopy.

Change-Id: I5c0e674390c5672ee1083b1226c206557f6a980b

osmopy/osmo_ipa.py

@@ -34,7 +34,7 @@ class IPA(object):
     # OpenBSC extensions: OSMO, MGCP_OLD
     PROTO = dict(RSL=0x00, CCM=0xFE, SCCP=0xFD, OML=0xFF, OSMO=0xEE, MGCP_OLD=0xFC)
     # ...OML Router Control, GSUP GPRS extension, Osmocom Authn Protocol
-    EXT = dict(CTRL=0, MGCP=1, LAC=2, SMSC=3, ORC=4, GSUP=5, OAP=6)
+    EXT = dict(CTRL=0, MGCP=1, LAC=2, SMSC=3, ORC=4, GSUP=5, OAP=6, RSPRO=7)
     # OpenBSC extension: SCCP_OLD
     MSGT = dict(PING=0x00, PONG=0x01, ID_GET=0x04, ID_RESP=0x05, ID_ACK=0x06, SCCP_OLD=0xFF)
     _IDTAG = dict(SERNR=0, UNITNAME=1, LOCATION=2, TYPE=3, EQUIPVERS=4, SWVERSION=5, IPADDR=6, MACADDR=7, UNIT=8)

osmopy/twisted_ipa.py

@@ -84,6 +84,12 @@ class IPACommon(basic.Int16StringReceiver):
         """
         self.dbg('OSMO OAP received %s' % data)
 
+    def osmo_RSPRO(self, data):
+        """
+        OSMO RSPRO (Remote Sim Protocol) extension
+        """
+        self.dbg('OSMO RSPRO received %s' % data)
+
     def osmo_UNKNOWN(self, data):
         """
         OSMO defaul extension handler