from trex_stl_lib.api import * class STLS1: def create_stream(self): # base_pkt = Ether()/IP(dst="2.2.0.1")/UDP(dport=12) # pad = Padding() # if len(base_pkt) < 64: # pad_len = 64 - len(base_pkt) # pad.load = '\x00' * pad_len # vm = STLVM() # vm.tuple_var(name="tuple", ip_min="10.0.0.3", ip_max="10.0.0.202", port_min=1025, port_max=61124, limit_flows = 100000) # vm.write(fv_name="tuple.ip", pkt_offset="IP.src") # vm.fix_chksum() # vm.write(fv_name="tuple.port", pkt_offset="UDP.sport") # pkt = STLPktBuilder(pkt=base_pkt/pad, vm=vm) # return STLStream(packet=pkt, mode=STLTXCont()) vm = STLScVmRaw( [ STLVmTupleGen( ip_min="10.0.0.1", ip_max="10.255.255.254", port_min=1025, port_max=65535, # name="stuple", limit_flows=10000), name="stuple", limit_flows=100, ), STLVmTupleGen( ip_min="2.0.0.1", ip_max="2.255.255.254", port_min=1025, port_max=65535, # name="dtuple", limit_flows=100000000), name="dtuple", limit_flows=100, ), # write ip to packet IP.src STLVmWrFlowVar(fv_name="stuple.ip", pkt_offset="IP.src"), STLVmWrFlowVar(fv_name="dtuple.ip", pkt_offset="IP.dst"), # fix checksum STLVmFixIpv4(offset="IP"), # write udp.port STLVmWrFlowVar(fv_name="stuple.port", pkt_offset="UDP.sport"), STLVmWrFlowVar(fv_name="dtuple.port", pkt_offset="UDP.dport"), ] ) base_pkt = ( Ether() / IP(src="16.0.0.1", dst="2.0.0.1") / UDP(dport=12, sport=1025) ) pad = Padding() if len(base_pkt) < 64: pad_len = 64 - len(base_pkt) pad.load = "\x00" * pad_len pkt = STLPktBuilder(pkt=base_pkt / pad, vm=vm) return STLStream(packet=pkt, mode=STLTXCont()) def get_streams(self, direction=0, **kwargs): return [self.create_stream()] # dynamic load - used for trex console or simulator def register(): return STLS1()