[dts] [PATCH V1] tests/TestSuite_mtu_update.py: modify dts to adapt ixgbe

[Xia Yan <yanx.xia@intel.com>]

modify jumbo frames and add command to adapt ixgbe

Signed-off-by: Xia Yan <yanx.xia@intel.com>
---
 tests/TestSuite_mtu_update.py | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/tests/TestSuite_mtu_update.py b/tests/TestSuite_mtu_update.py
index 239272f2..5282754e 100644
--- a/tests/TestSuite_mtu_update.py
+++ b/tests/TestSuite_mtu_update.py
@@ -108,8 +108,12 @@ class TestMtuUpdate(TestCase):
         # The packet total size include ethernet header, ip header, and payload.
         # ethernet header length is 18 bytes, ip standard header length is 20 bytes.
         # pktlen = pktsize - ETHER_HEADER_LEN
-        max_pktlen = pktsize + ETHER_HEADER_LEN + VLAN * 2
-        padding = max_pktlen - IP_HEADER_LEN - ETHER_HEADER_LEN
+        if self.kdriver == "ixgbe":
+            max_pktlen = pktsize + ETHER_HEADER_LEN + VLAN
+            padding = max_pktlen - IP_HEADER_LEN - ETHER_HEADER_LEN-VLAN
+        else:
+            max_pktlen = pktsize + ETHER_HEADER_LEN + VLAN * 2
+            padding = max_pktlen - IP_HEADER_LEN - ETHER_HEADER_LEN
         out = self.send_scapy_packet(port_id,
                                      f'Ether(dst=dutmac, src="52:00:00:00:00:00")/IP()/Raw(load="\x50"*{padding})')
         return out
@@ -226,18 +230,18 @@ class TestMtuUpdate(TestCase):
         # Mellanox will need extra options to start testpmd
             self.pmdout.start_testpmd("Default", "--max-pkt-len=9500 --tx-offloads=0x8000 --enable-scatter -a")
         else:
-            self.pmdout.start_testpmd("Default")
+            self.pmdout.start_testpmd("Default", "--tx-offload=0x00008000")
         
         self.exec("port stop all")
         self.exec(f"port config mtu 0 {packet_size:d}")
         self.exec(f"port config mtu 1 {packet_size:d}")
         self.verify(int(self.pmdout.get_detail_from_port_info("MTU: ", "\d+", 0)) == packet_size, "MTU did not update")
         self.verify(int(self.pmdout.get_detail_from_port_info("MTU: ", "\d+", 1)) == packet_size, "MTU did not update")
-
+        self.exec("port config 1 tx_offload multi_segs on")
         self.exec("port start all")
         self.exec("set fwd mac")
         self.exec("start")
-
+        time.sleep(5)
         self.send_packet_of_size_to_tx_port(packet_size - 1, received=True)
         self.send_packet_of_size_to_tx_port(packet_size, received=True)
         self.send_packet_of_size_to_tx_port(packet_size + 1, received=False)
-- 
2.17.1