pespin submitted this change.

Approvals:
  Jenkins Builder: Verified
  laforge: Looks good to me, approved
  osmith: Looks good to me, but someone else must approve

testsuites/gtplab-sysmo2025/tunmap: Improve function allocating TRX src IP addresses

Change-Id: Ie57b1933f37b3903b043ac36cbc570fecdf4e352
---
M testsuites/gtplab-sysmo2025/tunmap/trex/gtp_1pkt_simple.py
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/testsuites/gtplab-sysmo2025/tunmap/trex/gtp_1pkt_simple.py b/testsuites/gtplab-sysmo2025/tunmap/trex/gtp_1pkt_simple.py
index 17e7ac8..18bb5a7 100644
--- a/testsuites/gtplab-sysmo2025/tunmap/trex/gtp_1pkt_simple.py
+++ b/testsuites/gtplab-sysmo2025/tunmap/trex/gtp_1pkt_simple.py
@@ -6,7 +6,18 @@
 
     def calc_src_addr(self, addr_str, inc):
         li = addr_str.split(".")
-        return li[0] + "." + li[1] + "." + li[2] + "." + str(int(li[3]) + inc)
+        num_0 = (int(li[0]) << (3*8))
+        num_1 = (int(li[1]) << (2*8))
+        num_2 = (int(li[2]) << (1*8))
+        num_3 = int(li[3])
+        num = num_0 | num_1 | num_2 | num_3
+        num += inc
+        li[0] = str((num >> (3*8)) & 0xff)
+        li[1] = str((num >> (2*8)) & 0xff)
+        li[2] = str((num >> (1*8)) & 0xff)
+        li[3] = str(num & 0xff)
+        return ".".join(li)
+
 
     # One stream per GTPU eNB/CN IP address.
     # Assumption: TEIDs are assigned sequentially (in pairs RAN/CN) over each IP

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