[PATCH v2] kni: restrict bifurcated device support

[Thomas Monjalon]

23/11/2021 17:46, Ferruh Yigit:
> To enable bifurcated device support, rtnl_lock is released before calling
> userspace callbacks and asynchronous requests are enabled.
> 
> But these changes caused more issues, like bug #809, #816. To reduce the
> scope of the problems, the bifurcated device support related changes are
> only enabled when it is requested explicitly with new 'enable_bifurcated'
> module parameter.
> And bifurcated device support is disabled by default.
> 
> So the bifurcated device related problems are isolated and they can be
> fixed without impacting all use cases.
> 
> Bugzilla ID: 816
> Fixes: 631217c76135 ("kni: fix kernel deadlock with bifurcated device")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Ferruh Yigit <ferruh.yigit at intel.com>
> Acked-by: Igor Ryzhov <iryzhov at nfware.com>

This approach looks pragmatic.
BTW, I'm not sure there is a strong need for KNI with bifurcated device.

Applied, thanks.