netdev - Re: [PATCH net-next v2 5/9] selftests: drv-net: give HW stats sync time extra 25% of margin

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Message-ID: <willemdebruijn.kernel.35e36b64302f9@gmail.com>
Date: Sun, 08 Feb 2026 21:37:20 -0500
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
To: Jakub Kicinski <kuba@...nel.org>, 
 davem@...emloft.net
Cc: netdev@...r.kernel.org, 
 edumazet@...gle.com, 
 pabeni@...hat.com, 
 andrew+netdev@...n.ch, 
 horms@...nel.org, 
 shuah@...nel.org, 
 willemb@...gle.com, 
 petrm@...dia.com, 
 donald.hunter@...il.com, 
 michael.chan@...adcom.com, 
 pavan.chebbi@...adcom.com, 
 linux-kselftest@...r.kernel.org, 
 Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH net-next v2 5/9] selftests: drv-net: give HW stats sync
 time extra 25% of margin

Jakub Kicinski wrote:
> There are transient failures for devices which update stats
> periodically, especially if it's the FW DMA'ing the stats
> rather than host periodic work querying the FW. Wait 25%
> longer than strictly necessary.
> 
> For devices which don't report stats-block-usecs we retain
> 25 msec as the default wait time (0.025sec == 20,000usec * 1.25).
> 
> Reviewed-by: Petr Machata <petrm@...dia.com>
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

Reviewed-by: Willem de Bruijn <willemb@...gle.com>