1 files changed, 35 insertions, 0 deletions
diff --git a/scripts/stl/udp_1pkt_1mac_step.py b/scripts/stl/udp_1pkt_1mac_step.py
new file mode 100644
index 00000000..bab46fb7
--- /dev/null
+++ b/scripts/stl/udp_1pkt_1mac_step.py
@@ -0,0 +1,35 @@
+from trex_stl_lib.api import *
+
+
+# step is not 1. 
+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="mac_src", min_value=1, max_value=30, size=1, op="dec",step=7), 
+                           STLVmWrFlowVar(fv_name="mac_src", pkt_offset= 11)                           # write it to LSB of SRC offset it 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()
+
+
+