https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222775
Bug ID: 222775
Summary: After re-enabling TSO, not seeing TSO pkts until
restart iperf command
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Staps to reproduce:-
1. Load if_bnxt driver
2. start iperf TCP traffic
3. Capture Tx pkts (command: tcpdump -i bnxt0), I can see > 60K lengh pkts.
4. Disable tso (command: ifconfig bnxt0 -tso)
5. Capture Tx pkts (command: tcpdump -i bnxt0).
Max pkt length seen is 1440 (non-tso pkts)
6. Enable TSO (command: ifconfig bnxt0 -tso)
7. Capture Tx pkts (command: tcpdump -i bnxt0).
Max pkt length seen is still 1440 (I was expecting TSO pkts here).
8. Terminate iperf sessions and start again.
Now, I can see TSO pkts.
Can someone please confirm whether this is expected behavior?
Why am I not able to see TSO pkts untill I re-start iperf session?
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