def add_nw_rewrite(self, rewrite_src, addr):
"""Add rewrite for IP address
@param rewrite_src boolean for indicated rewrite src or dst
@param addr address to rewrite to
"""
oanw = pyof.ofp_action_nw_addr()
if rewrite_src:
oanw.type = pyof.OFPAT_SET_NW_SRC
else:
oanw.type = pyof.OFPAT_SET_NW_DST
oanw.nw_addr = addr
self.add(oanw)
def unpack_action(self, string):
"""Unpack action
@param string binary string of actions
@return (action, remaining)
"""
remaining = string
action = None
ah = pyof.ofp_action_header()
ah.unpack(string)
if (ah.type == pyof.OFPAT_OUTPUT):
action = pyof.ofp_action_output()
remaining = action.unpack(string)
elif (ah.type == pyof.OFPAT_SET_NW_SRC) or (ah.type == pyof.OFPAT_SET_NW_DST):
action = pyof.ofp_action_nw_addr()
remaining = action.unpack(string)
else:
output.warn("Unhandled action type "+str(ah.type)+"!",
self.__class__.__name__)
return (None, remaining[ah.len:])
return (action, remaining)
