lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Tue, 8 Dec 2020 15:50:15 +0100
From:   Loic Poulain <>
Cc:     Jakub Kicinski <>,,
        Network Development <>
Subject: Re: [PATCH] net: rmnet: Adjust virtual device MTU on real device capability

Hi Subash,

On Tue, 8 Dec 2020 at 09:19, <> wrote:
> >> What about just returning an error on NETDEV_PRECHANGEMTU notification
> >> to prevent real device MTU change while virtual rmnet devices are
> >> linked? Not sure there is a more proper and thread safe way to manager
> >> that otherwise.
> >
> > Can't you copy what vlan devices do?  That'd seem like a reasonable and
> > well tested precedent, no?
> Could you try this patch. I've tried addressing most of the conditions
> here.
> I haven't seen any issues with updating the MTU when rmnet devices are
> linked.

Thanks, could you submit it as new regular patch, I'll give you my tested-by.


Powered by blists - more mailing lists