netdev - Re: [PATCH net-next V7 0/2] veth: qdisc backpressure and qdisc check refactor

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Message-Id: 
 <174587883648.1063939.13609783923065664545.git-patchwork-notify@kernel.org>
Date: Mon, 28 Apr 2025 22:20:36 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Jesper Dangaard Brouer <hawk@...nel.org>
Cc: netdev@...r.kernel.org, kuba@...nel.org, bpf@...r.kernel.org,
 tom@...bertland.com, eric.dumazet@...il.com, davem@...emloft.net,
 pabeni@...hat.com, toke@...e.dk, dsahern@...nel.org,
 makita.toshiaki@....ntt.co.jp, kernel-team@...udflare.com, phil@....cc
Subject: Re: [PATCH net-next V7 0/2] veth: qdisc backpressure and qdisc check
 refactor

Hello:

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

On Fri, 25 Apr 2025 16:55:25 +0200 you wrote:
> This patch series addresses TX drops seen on veth devices under load,
> particularly when using threaded NAPI, which is our setup in production.
> 
> The root cause is that the NAPI consumer often runs on a different CPU
> than the producer. Combined with scheduling delays or simply slower
> consumption, this increases the chance that the ptr_ring fills up before
> packets are drained, resulting in drops from veth_xmit() (ndo_start_xmit()).
> 
> [...]

Here is the summary with links:
  - [net-next,V7,1/2] net: sched: generalize check for no-queue qdisc on TX queue
    https://git.kernel.org/netdev/net-next/c/34dd0fecaa02
  - [net-next,V7,2/2] veth: apply qdisc backpressure on full ptr_ring to reduce TX drops
    https://git.kernel.org/netdev/net-next/c/dc82a33297fc

You are awesome, thank you!
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