from trex_stl_lib.api import * class STLS1(object): """ attack 48.0.0.1 at port 80 """ def __init__ (self): self.max_pkt_size_l3 =9*1024; def create_stream (self): # TCP SYN base_pkt = Ether()/IP(dst="48.0.0.1")/TCP(dport=80,flags="S") # vm vm = CTRexScRaw( [ STLVmFlowVar(name="ip_src", min_value="16.0.0.0", max_value="18.0.0.254", size=4, op="random"), STLVmFlowVar(name="src_port", min_value=1025, max_value=65000, size=2, op="random"), STLVmWrFlowVar(fv_name="ip_src", pkt_offset= "IP.src" ), STLVmFixIpv4(offset = "IP"), # fix checksum STLVmWrFlowVar(fv_name="src_port", pkt_offset= "TCP.sport") # fix udp len ] ) pkt = STLPktBuilder(pkt = base_pkt, vm = vm) return STLStream(packet = pkt, mode = STLTXCont()) def get_streams (self, direction = 0): # create 1 stream return [ self.create_stream() ] # dynamic load - used for trex console or simulator def register(): return STLS1()