x client example mac/ip change

1 files changed, 45 insertions, 0 deletions

diff --git a/scripts/stl/udp_1pkt_range_clients.py b/scripts/stl/udp_1pkt_range_clients.py
new file mode 100644
index 00000000..2078b748
--- /dev/null
+++ b/scripts/stl/udp_1pkt_range_clients.py
@@ -0,0 +1,45 @@
+from trex_stl_lib.api import *
+
+
+# x clients override the LSB of destination
+#Base src ip : 55.55.1.1, dst ip: Fixed
+#Increment host port portion starting at 55.55.1.1 for 'n' number of clients (55.55.1.1, 55.55.1.2)
+#Src MAC: start with 0000.dddd.0001, increment mac in steps of 1
+#Dst MAC: Fixed    (will be taken from trex_conf.yaml
+
+
+class STLS1(object):
+
+    def __init__ (self):
+        self.num_clients  =30000; # max is 16bit
+        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="55.55.1.1",dst="58.0.0.1")/UDP(dport=12,sport=1025)
+        pad = max(0, size - len(base_pkt)) * 'x'
+
+        vm = CTRexScRaw( [ STLVmFlowVar(name="mac_src", min_value=1, max_value=self.num_clients, size=2, op="inc"), # 1 byte varible, range 1-10
+                           STLVmFlowVar(name="mac_src_wa", min_value=0x0000dddd, max_value=0x0000dddd, size=4, op="inc"), # workaround hardcoded the src MAC MSB, will be solved as an option in the stream
+
+                           STLVmWrFlowVar(fv_name="mac_src_wa", pkt_offset= 6),                        # write constrant 0000.ddddd
+                           STLVmWrFlowVar(fv_name="mac_src", pkt_offset= 10)                           # write it to LSB of ethernet.src 
+                          ]
+                       )
+
+        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()
+
+
+