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Re: [PATCH net-next] net: ifdefy the wireless pointers in struct net_device

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Hi,

On Mon, May 16, 2022 at 10:13 PM Florian Fainelli <f.fainelli@xxxxxxxxx> wrote:
>
>
>
> On 5/16/2022 2:56 PM, Jakub Kicinski wrote:
> > Most protocol-specific pointers in struct net_device are under
> > a respective ifdef. Wireless is the notable exception. Since
> > there's a sizable number of custom-built kernels for datacenter
> > workloads which don't build wireless it seems reasonable to
> > ifdefy those pointers as well.
> >
> > While at it move IPv4 and IPv6 pointers up, those are special
> > for obvious reasons.
> >
> > Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
>
> Could not we move to an union of pointers in the future since in many
> cases a network device can only have one of those pointers at any given
> time?

note that ieee802154 has also functionality like __dev_get_by_index()
and checks via "if (netdev->ieee802154_ptr)" if it's a wpan interface
or not, guess the solution would be like it's done in wireless then.

- Alex




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