On TC8 test,UDP_FIELDS_12:Field -Total Length (Maximum)was described as follow:
1. DUT CONFIGURE: Externally cause DUT to listen on port<unusedUDPDstPort1> on <Dlface-0>
2. DUT: Listen on port <unusedUDPDstPort1> on <Dlface-0>
3. TESTER: <HOST-1>Sends Message to DUT through <Dlface-0>
containing:
-Length field set to maximum supported value
-data set to maximum supported octet size
4. TESTER: Verify using Upper Tester that DUT has received the UDP message.
Through wireshark, we found that now UT can receive UDP packets, the original UDP packet length is 1472 bytes, but DUT only receives 1428 bytes. We set QNX SYSCTL : net.inet.udp.sendspace=65535, and QNX passed its own test.
Is the data truncated on the switch chip of TDA4?