Messages in this thread | | | Date | Mon, 10 Aug 2020 09:53:05 -0700 | From | Jakub Kicinski <> | Subject | Re: [PATCH net-next RFC 01/13] devlink: Add reload level option to devlink reload command |
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On Sun, 9 Aug 2020 16:21:29 +0300 Moshe Shemesh wrote: > Okay, so devlink reload default for mlx5 will include also fw-activate > to align with mlxsw default. > > Meaning drivers that supports fw-activate will add it to the default.
No per-driver default.
Maybe the difference between mlxsw and mlx5 can be simply explained by the fact that mlxsw loads firmware from /lib/firmware on every probe (more or less).
It's only natural for a driver which loads FW from disk to load it on driver reload.
> The flow of devlink reload default on mlx5 will be: > > If there is FW image pending and live patch is suitable to apply, do > live patch and driver re-initialization. > > If there is FW image pending but live patch doesn't fit do fw-reset and > driver-initialization. > > If no FW image pending just do driver-initialization.
This sounds too complicated. Don't try to guess what the user wants.
> I still think I should on top of that add the level option to be > selected by the user if he prefers a specific action, so the uAPI would be: > > devlink dev reload [ netns { PID | NAME | ID } ] [ level { fw-live-patch > | driver-reinit |fw-activate } ]
I'm all for the level/action.
> But I am still missing something: fw-activate implies that it will > activate a new FW image stored on flash, pending activation. What if the > user wants to reset and reload the FW if no new FW pending ? Should we > add --force option to fw-activate level ?
Since reload does not check today if anything changed - i.e. if reload is actually needed, neither should fw-activate, IMO. I'd expect the "--force behavior" to be the default.
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