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import sys
import os
#./stl-sim -f stl/profiles/udp_1pkt_tuple_gen.py -l 10 -o a.pcap
# Should be removed
# TBD fix this
CURRENT_PATH = os.path.dirname(os.path.realpath(__file__))
API_PATH = os.path.join(CURRENT_PATH, "../../api/stl")
sys.path.insert(0, API_PATH)
from scapy.all import *
from trex_stl_api import *
class STLS1(object):
def __init__ (self):
self.fsize =64;
def create_stream (self):
# create a base packet and pad it to size
size = self.fsize - 4; # no FCS
base_pkt = Ether()/IP(src="16.0.0.1",dst="48.0.0.1")/UDP(dport=12,sport=1025)
pad = max(0, size - len(base_pkt)) * 'x'
vm = CTRexScRaw( [ CTRexVmDescTupleGen ( ip_min="16.0.0.1", ip_max="16.0.0.2",
port_min=1025, port_max=65535,
name="tuple"), # define tuple gen
CTRexVmDescWrFlowVar (fv_name="tuple.ip", pkt_offset= "IP.src" ), # write ip to packet IP.src
CTRexVmDescFixIpv4(offset = "IP"), # fix checksum
CTRexVmDescWrFlowVar (fv_name="tuple.port", pkt_offset= "UDP.sport" ) #write udp.port
]
);
pkt = STLPktBuilder(pkt = base_pkt/pad,
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()
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