1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
from trex_stl_lib.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( [ STLVmFlowVar(name="dyn_mac_src", min_value=1, max_value=10, size=1, op="inc"), # 1 byte varible, range 1-1 ( workaround)
STLVmFlowVar(name="static_mac_src_lsb", min_value=0x12345600, max_value=0x12345600, size=4, op="inc"), # workaround to override the mac 4 LSB byte
STLVmFlowVar(name="static_mac_src_msb", min_value=0x00bb, max_value=0x00bb, size=2, op="inc"), # workaround to override the mac 2 MSB byte
STLVmWrFlowVar(fv_name="static_mac_src_msb", pkt_offset= 6),
STLVmWrFlowVar(fv_name="static_mac_src_lsb", pkt_offset= 8),
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):
# create 1 stream
return [ self.create_stream() ]
# dynamic load - used for trex console or simulator
def register():
return STLS1()
|
