linux-kernel - Re: [PATCH net-next v8 0/6] move CAN skb headroom content to skb extensions

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Message-Id: 
 <177028982443.276579.4263605959311895217.git-patchwork-notify@kernel.org>
Date: Thu, 05 Feb 2026 11:10:24 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Oliver Hartkopp <socketcan@...tkopp.net>
Cc: mkl@...gutronix.de, mailhol@...nel.org, robin@...tonic.nl,
 o.rempel@...gutronix.de, kernel@...gutronix.de, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, horms@...nel.org,
 linux-can@...r.kernel.org, linux-kernel@...r.kernel.org,
 netdev@...r.kernel.org, lkp@...el.com
Subject: Re: [PATCH net-next v8 0/6] move CAN skb headroom content to skb
 extensions

Hello:

This series was applied to netdev/net-next.git (main)
by Paolo Abeni <pabeni@...hat.com>:

On Sun, 01 Feb 2026 15:33:15 +0100 you wrote:
> CAN bus related skbuffs (ETH_P_CAN/ETH_P_CANFD/ETH_P_CANXL) simply contain
> CAN frame structs for CAN CC/FD/XL of skb->len length at skb->data. Those
> CAN skbs do not have network/mac/transport headers nor other such
> references for encapsulated protocols like ethernet/IP protocols.
> 
> To store data for CAN specific use-cases all CAN bus related skbuffs are
> created with a 16 byte private skb headroom (struct can_skb_priv). Using
> the skb headroom and accessing skb->head for this private data led to
> several problems in the past likely due to "The struct can_skb_priv
> business is highly unconventional for the networking stack." [1]
> 
> [...]

Here is the summary with links:
  - [net-next,v8,1/6] can: use skb hash instead of private variable in headroom
    https://git.kernel.org/netdev/net-next/c/d4fb6514ff8e
  - [net-next,v8,2/6] can: add CAN skb extension infrastructure
    https://git.kernel.org/netdev/net-next/c/96ea3a1e2d31
  - [net-next,v8,3/6] can: move ifindex to CAN skb extensions
    (no matching commit)
  - [net-next,v8,4/6] can: move frame_len to CAN skb extensions
    https://git.kernel.org/netdev/net-next/c/d2d9179751e6
  - [net-next,v8,5/6] can: remove private CAN skb headroom infrastructure
    https://git.kernel.org/netdev/net-next/c/9f10374bb024
  - [net-next,v8,6/6] can: gw: use can_gw_hops instead of sk_buff::csum_start
    https://git.kernel.org/netdev/net-next/c/3ffecc14ec7e

You are awesome, thank you!
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