From: patchwork-bot+netdevbpf@kernel.org
To: Wayen Yan <win847@gmail.com>
Cc: netdev@vger.kernel.org, lorenzo@kernel.org, horms@kernel.org,
pabeni@redhat.com, kuba@kernel.org, edumazet@google.com,
andrew+netdev@lunn.ch, angelogioacchino.delregno@collabora.com,
matthias.bgg@gmail.com, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, joe@dama.to
Subject: Re: [PATCH net v5] net: airoha: Fix skb->priority underflow in airoha_dev_select_queue()
Date: Sun, 21 Jun 2026 22:20:20 +0000 [thread overview]
Message-ID: <178208042004.521994.1468591358072405119.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <178194366700.2485734.5368768965976693502@gmail.com>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Sat, 20 Jun 2026 16:17:44 +0800 you wrote:
> In airoha_dev_select_queue(), the expression:
>
> queue = (skb->priority - 1) % AIROHA_NUM_QOS_QUEUES;
>
> implicitly converts to unsigned arithmetic: when skb->priority is 0
> (the default for unclassified traffic), (0u - 1u) wraps to UINT_MAX,
> and UINT_MAX % 8 = 7, routing default best-effort packets to the
> highest-priority QoS queue. This causes QoS inversion where the
> majority of traffic on a PON gateway starves actual high-priority
> flows (VoIP, gaming, etc.).
>
> [...]
Here is the summary with links:
- [net,v5] net: airoha: Fix skb->priority underflow in airoha_dev_select_queue()
https://git.kernel.org/netdev/net/c/86e51aa24686
You are awesome, thank you!
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prev parent reply other threads:[~2026-06-21 22:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-20 8:17 [PATCH net v5] net: airoha: Fix skb->priority underflow in airoha_dev_select_queue() Wayen Yan
2026-06-21 22:20 ` patchwork-bot+netdevbpf [this message]
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