netdev - Re: [PATCH net v3] net: gso: Forbid IPv6 TSO with extensions on devices with only IPV6

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Message-Id: 
 <175556340575.2959470.8995178513415785744.git-patchwork-notify@kernel.org>
Date: Tue, 19 Aug 2025 00:30:05 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Jakub Ramaseuski <jramaseu@...hat.com>
Cc: netdev@...r.kernel.org, kuba@...nel.org, horms@...nel.org,
 pabeni@...hat.com, edumazet@...gle.com, sdf@...ichev.me,
 ahmed.zaki@...el.com, aleksander.lobakin@...el.com, benoit.monin@....fr,
 willemb@...gle.com, tizhao@...hat.com, mschmidt@...hat.com,
 willemdebruijn.kernel@...il.com
Subject: Re: [PATCH net v3] net: gso: Forbid IPv6 TSO with extensions on
 devices
 with only IPV6_CSUM

Hello:

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

On Thu, 14 Aug 2025 12:51:19 +0200 you wrote:
> When performing Generic Segmentation Offload (GSO) on an IPv6 packet that
> contains extension headers, the kernel incorrectly requests checksum offload
> if the egress device only advertises NETIF_F_IPV6_CSUM feature, which has
> a strict contract: it supports checksum offload only for plain TCP or UDP
> over IPv6 and explicitly does not support packets with extension headers.
> The current GSO logic violates this contract by failing to disable the feature
> for packets with extension headers, such as those used in GREoIPv6 tunnels.
> 
> [...]

Here is the summary with links:
  - [net,v3] net: gso: Forbid IPv6 TSO with extensions on devices with only IPV6_CSUM
    https://git.kernel.org/netdev/net/c/864e3396976e

You are awesome, thank you!
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