netdev - Layer 3 (point-to-point) netfront and netback drivers

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Message-ID: <YycSD/wJ9pL0VsFD@itl-email>
Date:   Sun, 18 Sep 2022 08:41:25 -0400
From:   Demi Marie Obenour <demi@...isiblethingslab.com>
To:     Xen developer discussion <xen-devel@...ts.xenproject.org>,
        netdev@...r.kernel.org
Subject: Layer 3 (point-to-point) netfront and netback drivers

How difficult would it be to provide layer 3 (point-to-point) versions
of the existing netfront and netback drivers?  Ideally, these would
share almost all of the code with the existing drivers, with the only
difference being how they are registered with the kernel.  Advantages
compared to the existing drivers include less attack surface (since the
peer is no longer network-adjacent), slightly better performance, and no
need for ARP or NDP traffic.
-- 
Sincerely,
Demi Marie Obenour (she/her/hers)
Invisible Things Lab

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