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Open Source and information security mailing list archives
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Date: Wed, 15 Jan 2020 07:01:45 -0800 From: Jakub Kicinski <kuba@...nel.org> To: Moshe Shemesh <moshe@...lanox.com> Cc: "David S. Miller" <davem@...emloft.net>, Alexander Duyck <alexander.duyck@...il.com>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH net-next RFC 3/3] net/mlx5: Add FW upgrade reset support On Tue, 14 Jan 2020 17:55:28 +0200, Moshe Shemesh wrote: > Add support for FW upgrade reset. > On devlink reload the driver checks if there is a FW stored pending > upgrade reset. In such case the driver will set the device to FW upgrade > reset on next PCI link toggle and do link toggle after unload. > > To do PCI link toggle, the driver ensures that no other device ID under > the same bridge by checking that all the PF functions under the same PCI > bridge have same device ID. If no other device it uses PCI bridge link > control to turn link down and up. > > Signed-off-by: Moshe Shemesh <moshe@...lanox.com> I'd have a slight preference for the reset to be an explicit command rather than something the driver does automatically on the reload if there are pending changes. Won't there ever be scenarios where users just want to hard reset the device for their own reason? If multiple devices under one bridge are a real concern (or otherwise interdependencies) would it make sense to mark the devices as "reload pending" and perform the reloads once all devices in the group has this mark set?
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