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SubjectRe: [net-next 12/18] net: mac802154: Handle scan requests
Hi,

* Alexander Aring <alex.aring@gmail.com> [2021-12-29 09:30]:
> Hi,
> On Wed, 22 Dec 2021 at 10:58, Miquel Raynal <miquel.raynal@bootlin.com> wrote:
> ...
> > +{
> > + bool promiscuous_on = mac802154_check_promiscuous(local);
> > + int ret;
> > +
> > + if ((state && promiscuous_on) || (!state && !promiscuous_on))
> > + return 0;
> > +
> > + ret = drv_set_promiscuous_mode(local, state);
> > + if (ret)
> > + pr_err("Failed to %s promiscuous mode for SW scanning",
> > + state ? "set" : "reset");
> The semantic of promiscuous mode on the driver layer is to turn off
> ack response, address filtering and crc checking. Some transceivers
> don't allow a more fine tuning on what to enable/disable. I think we
> should at least do the checksum checking per software then?
> Sure there is a possible tune up for more "powerful" transceivers then...

In this case, the driver could change the (flags &
IEEE802154_HW_RX_DROP_BAD_CKSUM) bit dynamically to signal it does not
check the checksum anymore. Would it work?

Nicolas.

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