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Open Source and information security mailing list archives
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Date: Wed, 28 Dec 2022 11:15:01 +0200 From: Leon Romanovsky <leon@...nel.org> To: Alexander Duyck <alexander.duyck@...il.com> Cc: Jakub Kicinski <kuba@...nel.org>, Lixue Liang <lianglixuehao@....com>, anthony.l.nguyen@...el.com, linux-kernel@...r.kernel.org, jesse.brandeburg@...el.com, davem@...emloft.net, edumazet@...gle.com, pabeni@...hat.com, netdev@...r.kernel.org, lianglixue@...atwall.com.cn Subject: Re: [PATCH v7] igb: Assign random MAC address instead of fail in case of invalid one On Mon, Dec 19, 2022 at 07:30:45AM -0800, Alexander Duyck wrote: > On Sun, Dec 18, 2022 at 12:41 AM Leon Romanovsky <leon@...nel.org> wrote: > > > > On Wed, Dec 14, 2022 at 12:50:16PM -0800, Jakub Kicinski wrote: > > > On Wed, 14 Dec 2022 20:53:30 +0200 Leon Romanovsky wrote: > > > > On Wed, Dec 14, 2022 at 08:51:06AM -0800, Jakub Kicinski wrote: > > > > > On Wed, 14 Dec 2022 09:22:13 +0200 Leon Romanovsky wrote: > > > > > > NAK to any module driver parameter. If it is applicable to all drivers, > > > > > > please find a way to configure it to more user-friendly. If it is not, > > > > > > try to do the same as other drivers do. > > > > > > > > > > I think this one may be fine. Configuration which has to be set before > > > > > device probing can't really be per-device. > > > > > > > > This configuration can be different between multiple devices > > > > which use same igb module. Module parameters doesn't allow such > > > > separation. > > > > > > Configuration of the device, sure, but this module param is more of > > > a system policy. > > > > And system policy should be controlled by userspace and applicable to as > > much as possible NICs, without custom module parameters. > > > > I would imagine global (at the beginning, till someone comes forward and > > requests this parameter be per-device) to whole stack parameter with policies: > > * Be strict - fail if mac is not valid > > * Fallback to random > > * Random only ??? > > > > Thanks > > So are you suggesting you would rather see something like this as a > sysctl then? Maybe something like net.core.netdev_mac_behavior where > we have some enum with a predetermined set of behaviors available? I > would be fine with us making this a global policy if that is the route > we want to go. It would just be a matter of adding the sysctl and an > accessor so that drivers can determine if it is set or not. Something like that and maybe convert drivers and/or to honor this policy. Thanks
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