From: patchwork-bot+netdevbpf@kernel.org
To: Pascal Kneuper <PKneuper@dspace.de>
Cc: kuba@kernel.org, andrew+netdev@lunn.ch, davem@davemloft.net,
edumazet@google.com, pabeni@redhat.com,
mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com,
rmk+kernel@armlinux.org.uk, maxime.chevallier@bootlin.com,
0x1207@gmail.com, si.yanteng@linux.dev, larysa.zaremba@intel.com,
aleksander.lobakin@intel.com, netdev@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, DBaldin@dspace.de
Subject: Re: [PATCH net v2] net: stmmac: restore NET_IP_ALIGN in the RX DMA offset
Date: Thu, 27 Aug 2026 19:40:23 +0000 [thread overview]
Message-ID: <178785962339.1816627.16266435775453733564.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260824125014.47862-1-PKneuper@dspace.de>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Mon, 24 Aug 2026 14:50:14 +0200 (CEST) you wrote:
> Since the RX path was converted to zero-copy, the page pool page is handed
> to the stack directly as the skb head, and the offset the DMA engine writes
> at is what determines the alignment of the packet headers.
>
> Before the conversion the payload was copied into an skb obtained from
> napi_alloc_skb(), which reserves NET_SKB_PAD + NET_IP_ALIGN. The
> conversion moved the headroom into stmmac_rx_offset() but did not carry
> over NET_IP_ALIGN, so on architectures where NET_IP_ALIGN is 2 the IP
> header now lands misaligned:
>
> [...]
Here is the summary with links:
- [net,v2] net: stmmac: restore NET_IP_ALIGN in the RX DMA offset
https://git.kernel.org/netdev/net/c/23680bf5f8c6
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-08-27 19:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-13 9:29 [PATCH net] net: stmmac: restore NET_IP_ALIGN in the non-XDP RX path Pascal Kneuper
2026-08-18 1:22 ` Jakub Kicinski
2026-08-24 12:13 ` Pascal Kneuper
2026-08-24 12:50 ` [PATCH net v2] net: stmmac: restore NET_IP_ALIGN in the RX DMA offset Pascal Kneuper
2026-08-24 14:23 ` David Laight
2026-08-27 19:40 ` patchwork-bot+netdevbpf [this message]
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