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import sys
import os
# 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 *
# 1 clients MAC override the LSB of destination
# overide the destination 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 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( [ CTRexVmDescFlowVar(name="dyn_mac_src", min_value=1, max_value=10, size=1, op="inc"), # 1 byte varible, range 1-1 ( workaround)
CTRexVmDescFlowVar(name="static_mac_src_lsb", min_value=0x12345600, max_value=0x12345600, size=4, op="inc"), # workaround to override the mac 4 LSB byte
CTRexVmDescFlowVar(name="static_mac_src_msb", min_value=0x00bb, max_value=0x00bb, size=2, op="inc"), # workaround to override the mac 2 MSB byte
CTRexVmDescWrFlowVar(fv_name="static_mac_src_msb", pkt_offset= 6),
CTRexVmDescWrFlowVar(fv_name="static_mac_src_lsb", pkt_offset= 8),
CTRexVmDescWrFlowVar(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):
# create 1 stream
return [ self.create_stream() ]
# dynamic load - used for trex console or simulator
def register():
return STLS1()
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