netdev - Re: [PATCH net-next v2 1/2] net: store netdevs in an xarray

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Message-ID: <20230728082745.5869bc97@kernel.org>
Date: Fri, 28 Jul 2023 08:27:45 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Leon Romanovsky <leon@...nel.org>
Cc: davem@...emloft.net, netdev@...r.kernel.org, edumazet@...gle.com,
 pabeni@...hat.com, sd@...asysnail.net
Subject: Re: [PATCH net-next v2 1/2] net: store netdevs in an xarray

On Fri, 28 Jul 2023 07:53:04 +0300 Leon Romanovsky wrote:
> > I'm feeding xa_alloc_cyclic() xa_limit_31b, which should take care 
> > of that, no?  
> 
> And what about xa_insert() call? Is it safe?

I think so, as in - the previous code doesn't have any checks either,
so it'd insert the negative ifindex into the hash table. Hopefully
nobody assigns negative values to dev->ifindex, that'd be a bug in
itself, I reckon.