Re: [PATCH net] net: sgi: ioc3-eth: fix split TX DMA mapping lengths

[patchwork-bot+netdevbpf]

Hello:

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

On Mon, 29 Jun 2026 16:06:23 +0800 you wrote:
> From: Xu Rao <raoxu@xxxxxxxxxxxxx>
> 
> When a linear skb crosses a 16 KiB boundary, ioc3_start_xmit()
> splits it into two buffers of lengths s1 and s2.  The descriptor
> advertises those lengths through B1CNT and B2CNT.
> 
> The first buffer is mapped with s1, but the second buffer is also
> mapped with s1 even though the device is told to fetch s2 bytes from
> it.  When the lengths differ, the DMA mapping does not cover the same
> region as the second descriptor buffer, which can result in incorrect
> cache maintenance or a DMA fault on implementations that enforce the
> mapped range.
> 
> [...]

Here is the summary with links:
  - [net] net: sgi: ioc3-eth: fix split TX DMA mapping lengths
    https://git.kernel.org/netdev/net-next/c/cd066559a073

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html