From: patchwork-bot+netdevbpf@kernel•org
To: Dimitri Daskalakis <dimitri.daskalakis1@gmail•com>
Cc: davem@davemloft•net, alexanderduyck@fb•com, kuba@kernel•org,
edumazet@google•com, pabeni@redhat•com, andrew+netdev@lunn•ch,
horms@kernel•org, ast@kernel•org, daniel@iogearbox•net,
hawk@kernel•org, john.fastabend@gmail•com, sdf@fomichev•me,
mohsin.bashr@gmail•com, netdev@vger•kernel.org,
bpf@vger•kernel.org, linux-kselftest@vger•kernel.org
Subject: Re: [PATCH net] eth: fbnic: Add validation for MTU changes
Date: Wed, 18 Feb 2026 06:33:08 +0000 [thread overview]
Message-ID: <177139638883.824640.16921608412951781877.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260214171949.772493-1-dimitri.daskalakis1@gmail.com>
Hello:
This patch was applied to netdev/net.git (main)
by David S. Miller <davem@davemloft•net>:
On Sat, 14 Feb 2026 09:19:49 -0800 you wrote:
> Increasing the MTU beyond the HDS threshold causes the hardware to
> fragment packets across multiple buffers. If a single-buffer XDP program
> is attached, the driver will drop all multi-frag frames. While we can't
> prevent a remote sender from sending non-TCP packets larger than the MTU,
> this will prevent users from inadvertently breaking new TCP streams.
>
> Traditionally, drivers supported XDP with MTU less than 4Kb
> (packet per page). Fbnic currently prevents attaching XDP when MTU is too high.
> But it does not prevent increasing MTU after XDP is attached.
>
> [...]
Here is the summary with links:
- [net] eth: fbnic: Add validation for MTU changes
https://git.kernel.org/netdev/net/c/ccd8e87748ad
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-02-18 6:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-14 17:19 [PATCH net] eth: fbnic: Add validation for MTU changes Dimitri Daskalakis
2026-02-16 12:18 ` Simon Horman
2026-02-18 6:33 ` patchwork-bot+netdevbpf [this message]
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