Re: [PATCH net-next v2] net: stmmac: est: Drop frames causing HLBS error
From: G Thomas, Rohan
Date: Wed Sep 17 2025 - 22:21:34 EST
Hi Jakub,
Thanks for reviewing the patch.
On 9/18/2025 4:03 AM, Jakub Kicinski wrote:
On Mon, 15 Sep 2025 16:22:14 +0800 Rohan G Thomas via B4 Relay wrote:
From: Rohan G Thomas <rohan.g.thomas@xxxxxxxxxx>
Drop those frames causing HLBS error to avoid HLBS interrupt
flooding and netdev watchdog timeouts due to blocked packets.
Also add HLBS frame drops to taprio stats.
I think these should be two separate commits.
Sure, I will do in the next version.
Also are the HLBS and DFBS acronyms obvious to everyone who works
on TSN?
Even though the term Head-Of-Line Blocking is obvious, the acronyms HLBS
and DFBS are from the dwmac and dwxgmac databooks.
HLBS => Head-Of-Line Blocking due to Scheduling
DFBS => Drop Frames causing Scheduling Error
I’ll expand these acronyms in the next version for clarity.
Best Regards,
Rohan