linux-kernel - Re: [PATCH] netpoll: support sending over raw IP interfaces

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Date: Thu, 14 Mar 2024 13:48:00 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Mark Cilissen <mark@...suba.nl>, netdev@...r.kernel.org
Cc: Hans de Goede <hdegoede@...hat.com>, Eric Dumazet <edumazet@...gle.com>,
  Jakub Kicinski <kuba@...nel.org>, Breno Leitao <leitao@...ian.org>, Ingo
 Molnar <mingo@...hat.com>, "David S. Miller" <davem@...emloft.net>, 
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] netpoll: support sending over raw IP interfaces

On Wed, 2024-03-13 at 13:46 +0100, Mark Cilissen wrote:
> Currently, netpoll only supports interfaces with an ethernet-compatible
> link layer. Certain interfaces like SLIP do not have a link layer
> on the network interface level at all and expect raw IP packets,
> and could benefit from being supported by netpoll.
> 
> This commit adds support for such interfaces by using the network device's
> `hard_header_len` field as an indication that no link layer is present.
> If that is the case we simply skip adding the ethernet header, causing
> a raw IP packet to be sent over the interface. This has been confirmed
> to add netconsole support to at least SLIP and WireGuard interfaces.
> 
> Signed-off-by: Mark Cilissen <mark@...suba.nl>

## Form letter - net-next-closed

The merge window for v6.9 has begun and we have already posted our pull
request. Therefore net-next is closed for new drivers, features, code
refactoring and optimizations. We are currently accepting bug fixes
only.

Please repost when net-next reopens after March 25th.

RFC patches sent for review only are obviously welcome at any time.

See:
https://www.kernel.org/doc/html/next/process/maintainer-netdev.html#development-cycle

--
pw-bot: defer