Re: [PATCH] netdev: Use flexible array for trailing private bytes

[Eric Dumazet]

On Fri, Mar 1, 2024 at 7:59 AM Jakub Kicinski <kuba@xxxxxxxxxx> wrote:
>
> On Thu, 29 Feb 2024 13:30:22 -0800 Kees Cook wrote:

> > diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> > index 118c40258d07..b476809d0bae 100644
> > --- a/include/linux/netdevice.h
> > +++ b/include/linux/netdevice.h
> > @@ -1815,6 +1815,8 @@ enum netdev_stat_type {
> >       NETDEV_PCPU_STAT_DSTATS, /* struct pcpu_dstats */
> >  };
> >
> > +#define      NETDEV_ALIGN            32
>
> Unless someone knows what this is for it should go.
> Align priv to cacheline size.

+2

#define NETDEV_ALIGN    L1_CACHE_BYTES

or a general replacement of NETDEV_ALIGN....