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from trex_stl_lib.api import *
class STLS1(object):
def __init__ (self):
self.ip_range = {'local': {'start': "10.0.0.3", 'end': "10.1.255.255"},
'external': {'start': "172.16.1.3", 'end': "172.16.1.3"},
'remote': {'start': "2.2.0.1", 'end': "2.2.0.1"}}
self.port_range = {'local': {'start': 1025, 'end': 65535},
'remote': {'start': 12, 'end': 12}}
def create_stream (self, vm):
base_pkt = Ether()/IP()/UDP()
if len(base_pkt) < 64:
pad_len = 64 - len(base_pkt)
pad = Padding()
pad.load = '\x00' * pad_len
base_pkt = base_pkt/pad
pkt = STLPktBuilder(pkt=base_pkt, vm=vm)
return STLStream(packet=pkt, mode=STLTXCont())
def get_streams (self, direction = 0, **kwargs):
if direction == 0:
ip_src = self.ip_range['remote']
ip_dst = self.ip_range['external']
src_port = self.port_range['remote']
dst_port = self.port_range['local']
else:
ip_src = self.ip_range['local']
ip_dst = self.ip_range['remote']
src_port = self.port_range['local']
dst_port = self.port_range['remote']
vm = STLVM()
vm.var(name="ip_src", min_value=ip_src['start'], max_value=ip_src['end'], size=4, op="random")
vm.var(name="ip_dst", min_value=ip_dst['start'], max_value=ip_dst['end'], size=4, op="random")
vm.var(name="src_port", min_value=src_port['start'], max_value=src_port['end'], size=2, op="random")
vm.var(name="dst_port", min_value=dst_port['start'], max_value=dst_port['end'], size=2, op="random")
vm.write(fv_name="ip_src", pkt_offset="IP.src")
vm.write(fv_name="ip_dst", pkt_offset="IP.dst")
vm.write(fv_name="src_port", pkt_offset="UDP.sport")
vm.write(fv_name="dst_port", pkt_offset="UDP.dport")
vm.fix_chksum()
return [ self.create_stream(vm) ]
# dynamic load - used for trex console or simulator
def register():
return STLS1()
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