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from trex_stl_lib.api import *
# 1 clients MAC override the LSB of destination
# overide the src mac 00:bb:12:34:56:01 - 00:bb:12:34:56:0a
class STLS1(object):
def __init__ (self):
self.fsize =64; # the size of the packet
def create_stream (self):
# Create base packet and pad it to size
size = self.fsize - 4; # HW will add 4 bytes ethernet FCS
# Ether(src="00:bb:12:34:56:01") this will tell TRex to take the src-mac from packet and not from config file
base_pkt = Ether(src="00:bb:12:34:56:01")/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 = STLScVmRaw( [ STLVmFlowVar(name="dyn_mac_src", min_value=1, max_value=10, size=1, op="inc"), # 1 byte varible, range 1-1 ( workaround)
STLVmWrFlowVar(fv_name="dyn_mac_src", pkt_offset= 11)
]
)
return STLStream(packet = STLPktBuilder(pkt = base_pkt/pad,vm = vm),
mode = STLTXCont( pps=10 ))
def get_streams (self, direction = 0, **kwargs):
# create 1 stream
return [ self.create_stream() ]
# dynamic load - used for trex console or simulator
def register():
return STLS1()
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