linux-kernel - Re: [PATCH] net: dsa: microchip: linearize skb for tail-tagging switches

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Message-ID: <10106e65-3e38-4a9d-ac7e-2b5819bb3613@gmail.com>
Date: Sat, 10 May 2025 22:08:26 +0200
From: Jakob Unterwurzacher <jakobunt@...il.com>
To: Tristram.Ha@...rochip.com
Cc: quentin.schulz@...rry.de, jakob.unterwurzacher@...rry.de,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 Woojung.Huh@...rochip.com, UNGLinuxDriver@...rochip.com, andrew@...n.ch,
 olteanv@...il.com, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, horms@...nel.org
Subject: Re: [PATCH] net: dsa: microchip: linearize skb for tail-tagging
 switches

On 10.05.25 00:18, Tristram.Ha@...rochip.com wrote:
> 
> I am curious about what MAC controller are you using to return socket
> buffer with fragments?

Hi, we have the KSZ9896C connected to gmac1 on the Rockchip RK3588, dts [1][2] 
says:

	gmac1: ethernet@...c0000 {
		compatible = "rockchip,rk3588-gmac", "snps,dwmac-4.20a";

Thanks, Jakob

[1] 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi?h=v6.15-rc5#n1811
[2] 
https://www.kernel.org/doc/Documentation/devicetree/bindings/net/snps%2Cdwmac.yaml