From: Jakub Kicinski <kuba@kernel.org>
To: netdev@vger.kernel.org
Cc: Zinc Lim <zinclim@meta.com>, almasrymina@google.com, willemb@google.com
Subject: fbnic qemu is open source
Date: Mon, 9 Mar 2026 11:38:52 -0700 [thread overview]
Message-ID: <20260309113852.2c654de5@kernel.org> (raw)
Hi!
The fbnic QEMU repo is now open source and available at:
https://github.com/facebook/fbnic_qemu
It contains the emulated datapath for the fbnic device, the FW
components are not included (PHY programming, NC-SI, init, sensors
and such).
The main practical use I imagine is being able to test TCP Rx zero
copy (kernel and/or user space) without any HW dependency.
There's work on adding relevant features to virtio but it's going
a little slowly. Also being able to test code and selftests with
a more "real" device than netdevsim with vng is super convenient :)
Big thanks to Zinc Lim for the open source heavy lifting (isolating
and mocking out the FW parts, cleaning up the code base and getting
it thru corporate reviews).
No plans at this stage to upstream it to QEMU because TBH I don't
expect that QEMU would care to carry random HW emulation drivers.
Sorry if the announcement is a bit self-serving but folks expressed
interest off list in being able to test the queue API and zero-copy
Rx without real HW so I thought it's relevant.
next reply other threads:[~2026-03-09 18:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-09 18:38 Jakub Kicinski [this message]
2026-03-17 19:41 ` fbnic qemu is open source Mina Almasry
2026-03-17 21:34 ` Jakub Kicinski
2026-03-17 21:42 ` Adam Young
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