linux-kernel - Re: [net-next 12/18] net: mac802154: Handle scan requests

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Date:   Tue, 4 Jan 2022 20:36:54 -0500
From:   Alexander Aring <alex.aring@...il.com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Nicolas Schodet <nico@...fr.eu.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
        Stefan Schmidt <stefan@...enfreihafen.org>,
        linux-wpan - ML <linux-wpan@...r.kernel.org>,
        David Girault <david.girault@...vo.com>,
        Romuald Despres <romuald.despres@...vo.com>,
        Frederic Blain <frederic.blain@...vo.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [net-next 12/18] net: mac802154: Handle scan requests

Hi,

On Tue, 4 Jan 2022 at 12:43, Miquel Raynal <miquel.raynal@...tlin.com> wrote:
>
> Hi Alexander,
>
> > I see that beacons are sent out with
> > "local->beacon.mhr.fc.dest_addr_mode = IEEE802154_NO_ADDRESSING;"
> > shouldn't that be a broadcast destination?
>
> In the case of a beacon, 7.3.1.2 Beacon frame MHR field indicate:
>
>         When the Frame Version field is 0b00–0b01:
>                 — The Destination Addressing mode field shall be set to
>                 indicated that the Destination Address and Destination
>                 PAN ID fields are not present.
>
> So I think the NO_ADDRESSING choice here is legit. The destination
> field however is useful in the Enhanced beacon frame case, but that's
> not yet supported.

ok, yes I agree.

Thanks.

- Alex