1 files changed, 38 insertions, 0 deletions
diff --git a/scripts/stl/udp_1pkt_1mac_override.py b/scripts/stl/udp_1pkt_1mac_override.py
new file mode 100644
index 00000000..410c2630
--- /dev/null
+++ b/scripts/stl/udp_1pkt_1mac_override.py
@@ -0,0 +1,38 @@
+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()
+
+
+