netdev - Re: [PATCH net] net: dsa: felix: fix oversize frame dropping for always closed tc-taprio gates

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Date: Sat, 19 Aug 2023 01:50:20 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Vladimir Oltean <vladimir.oltean@....com>
Cc: netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, xiaoliang.yang_1@....com,
 claudiu.manoil@....com, alexandre.belloni@...tlin.com,
 UNGLinuxDriver@...rochip.com, andrew@...n.ch, f.fainelli@...il.com,
 michael@...le.cc, richard.pearn@....com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: dsa: felix: fix oversize frame dropping for always
 closed tc-taprio gates

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Thu, 17 Aug 2023 15:01:11 +0300 you wrote:
> The blamed commit resolved a bug where frames would still get stuck at
> egress, even though they're smaller than the maxSDU[tc], because the
> driver did not take into account the extra 33 ns that the queue system
> needs for scheduling the frame.
> 
> It now takes that into account, but the arithmetic that we perform in
> vsc9959_tas_remaining_gate_len_ps() is buggy, because we operate on
> 64-bit unsigned integers, so gate_len_ns - VSC9959_TAS_MIN_GATE_LEN_NS
> may become a very large integer if gate_len_ns < 33 ns.
> 
> [...]

Here is the summary with links:
  - [net] net: dsa: felix: fix oversize frame dropping for always closed tc-taprio gates
    https://git.kernel.org/netdev/net/c/d44036cad311

You are awesome, thank you!
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