netdev - Re: [PATCH net v6 2/2] selftests/tc-testing: Check Cake Scheduler when enqueue drops packets

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Message-ID: <aSZ9QhUImq0nH8mi@pop-os.localdomain>
Date: Tue, 25 Nov 2025 20:08:34 -0800
From: Cong Wang <xiyou.wangcong@...il.com>
To: Xiang Mei <xmei5@....edu>
Cc: security@...nel.org, netdev@...r.kernel.org, toke@...e.dk,
	cake@...ts.bufferbloat.net, bestswngs@...il.com
Subject: Re: [PATCH net v6 2/2] selftests/tc-testing: Check Cake Scheduler
 when enqueue drops packets

On Tue, Nov 25, 2025 at 03:02:13PM -0700, Xiang Mei wrote:
> Add tests that trigger packet drops in cake_enqueue(). The tests use
> CAKE under a QFQ parent/class, then replace CAKE with NETEM to exercise
> the previously fixed bug where cake_enqueue() drops a packet in the
> same flow and returns NET_XMIT_CN.
> 
> Signed-off-by: Xiang Mei <xmei5@....edu>
> ---
>  .../tc-testing/tc-tests/qdiscs/cake.json      | 28 +++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 

Usually tools/testing/selftests/tc-testing/tc-tests/infra/qdiscs.json
is a better place for testing Qdisc combinations.

Regards,
Cong