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tunend: trex: Support differnet amount of pkt per UL/DL dir

Change-Id: Id273fabc9cd09df352a12b6d8f3ba60b6a9ce39f
---
M testsuites/gtplab-sysmo2025/tunend/trex/run.sh
M testsuites/gtplab-sysmo2025/tunend/trex/udp_simple.py
2 files changed, 13 insertions(+), 8 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/upf-benchmark refs/changes/05/39905/1

diff --git a/testsuites/gtplab-sysmo2025/tunend/trex/run.sh b/testsuites/gtplab-sysmo2025/tunend/trex/run.sh
index 18c2bbe..5798b6b 100755
--- a/testsuites/gtplab-sysmo2025/tunend/trex/run.sh
+++ b/testsuites/gtplab-sysmo2025/tunend/trex/run.sh
@@ -11,7 +11,7 @@
 echo "To start the test, run: >"
 echo "tunnel --type gtpu;"
 echo "tunnels_topo load -f ${SCRIPT_DIR}/gtpu_topo.py -t num-streams=${NUM_STREAMS},num-addrs=${NUM_ADDRS};"
-echo "start -f ${SCRIPT_DIR}/udp_simple.py -m 50000 -d 600 -t num-streams=${NUM_STREAMS},num-addrs=${NUM_ADDRS},num-pkts=1,dir=ul;"
+echo "start -f ${SCRIPT_DIR}/udp_simple.py -m 50000 -d 600 -t num-streams=${NUM_STREAMS},num-addrs=${NUM_ADDRS},num-pkts-ul=1,num-pkts-dl=1,dir=ul;"
 echo ""
 printf "Once the test finished, run: >\ntunnel --type gtpu --off;\n stats\n"
 set -x
diff --git a/testsuites/gtplab-sysmo2025/tunend/trex/udp_simple.py b/testsuites/gtplab-sysmo2025/tunend/trex/udp_simple.py
index 31d4370..8ff406b 100644
--- a/testsuites/gtplab-sysmo2025/tunend/trex/udp_simple.py
+++ b/testsuites/gtplab-sysmo2025/tunend/trex/udp_simple.py
@@ -56,10 +56,14 @@
                             type=int,
                             default=1,
                             help="The number of src IP addresses.")
-        parser.add_argument('--num-pkts',
+        parser.add_argument('--num-pkts-ul',
                             type=int,
                             default=1,
-                            help="The number of Packets to transmit per flow.")
+                            help="The number of UL Packets to transmit per flow.")
+        parser.add_argument('--num-pkts-dl',
+                            type=int,
+                            default=1,
+                            help="The number of DL Packets to transmit per flow.")
         parser.add_argument('--dir',
                             type=str,
                             default='ul',
@@ -68,25 +72,26 @@
         args = parser.parse_args(tunables)
         self.num_streams = args.num_streams
         self.num_addrs = args.num_addrs
-        self.num_pkts = args.num_pkts
+        self.num_pkts_ul = args.num_pkts_ul
+        self.num_pkts_dl = args.num_pkts_dl
         do_ul = "ul" in args.dir.lower()
         do_dl = "dl" in args.dir.lower()
 
         # client commands
         prog_c = ASTFProgram(stream=False, udp_mtu=1400, addon='latency')
         if do_ul:
-            for _ in range(self.num_pkts):
+            for _ in range(self.num_pkts_ul):
                 prog_c.send_msg(ul_pkt)
         if do_dl:
             prog_c.set_keepalive_msg(10000)
-            prog_c.recv_msg(self.num_pkts)
+            prog_c.recv_msg(self.num_pkts_dl)
 
         prog_s = ASTFProgram(stream=False, udp_mtu=1400, addon='latency')
         if do_ul:
             prog_s.set_keepalive_msg(10000)
-            prog_s.recv_msg(self.num_pkts)
+            prog_s.recv_msg(self.num_pkts_ul)
         if do_dl:
-            for _ in range(self.num_pkts):
+            for _ in range(self.num_pkts_dl):
                 prog_s.send_msg(dl_pkt)
 
         # Not really used, but must be passed to ASTFProfile:

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