From: Alexander Aring <aahringo@redhat.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Alexander Aring <alex.aring@gmail.com>,
Stefan Schmidt <stefan@datenfreihafen.org>,
linux-wpan - ML <linux-wpan@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Eric Dumazet <edumazet@google.com>,
Network Development <netdev@vger.kernel.org>,
David Girault <david.girault@qorvo.com>,
Romuald Despres <romuald.despres@qorvo.com>,
Frederic Blain <frederic.blain@qorvo.com>,
Nicolas Schodet <nico@ni.fr.eu.org>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH wpan-next 01/20] net: mac802154: Allow the creation of coordinator interfaces
Date: Thu, 1 Sep 2022 22:39:08 -0400 [thread overview]
Message-ID: <CAK-6q+hs19WP8_myYz8-f0n6LGqp1FykJ_2PdHrLSS4VZXQ3AQ@mail.gmail.com> (raw)
In-Reply-To: <CAK-6q+gbRZ_w-G7WBTQNfjnpawQ0EJ4DuR9tsGPbZpT6MN35cw@mail.gmail.com>
Hi,
On Thu, Sep 1, 2022 at 10:23 PM Alexander Aring <aahringo@redhat.com> wrote:
>
> Hi,
>
> On Wed, Aug 31, 2022 at 8:09 PM Miquel Raynal <miquel.raynal@bootlin.com> wrote:
> >
> > Hello again,
> >
> > miquel.raynal@bootlin.com wrote on Wed, 31 Aug 2022 17:39:03 +0200:
> >
> > > Hi Alexander & Stefan,
> > >
> > > aahringo@redhat.com wrote on Mon, 29 Aug 2022 22:23:09 -0400:
> > >
> > > I am currently testing my code with the ATUSB devices, the association
> > > works, so it's a good news! However I am struggling to get the
> > > association working for a simple reason: the crafted ACKs are
> > > transmitted (the ATUSB in monitor mode sees it) but I get absolutely
> > > nothing on the receiver side.
> > >
> > > The logic is:
> > >
> > > coord0 coord1
> > > association req ->
> > > <- ack
> > > <- association response
> > > ack ->
> > >
> > > The first ack is sent by coord1 but coord0 never sees anything. In
> > > practice coord0 has sent an association request and received a single
> > > one-byte packet in return which I guess is the firmware saying "okay, Tx
> > > has been performed". Shall I interpret this byte differently? Does it
> > > mean that the ack has also been received?
> >
> > I think I now have a clearer understanding on how the devices behave.
> >
> > I turned the devices into promiscuous mode and could observe that some
> > frames were considered wrong. Indeed, it looks like the PHYs add the
> > FCS themselves, while the spec says that the FCS should be provided to
> > the PHY. Anyway, I dropped the FCS calculations from the different MLME
> > frames forged and it helped a lot.
> >
>
> This is currently the case because monitor interfaces and AF_PACKET
> will not have the FCS in the payload. As you already figured out you
> can't refer 802.15.4 promiscuous mode to mac802154 promiscuous mode,
> it was a historically growing term as people wanted to have a sniffer
> device and used a promiscuous term from a datasheet (my guess).
> Vendors has a different meaning of promiscuous mode as the one from
> 802.15.4. IFF_PROMISC should be mapped to non-filtered mode which is
> more equal to a sniffer device. However we need to find solutions
> which fulfill everybody.
>
> > I also kind of "discovered" the concept of hardware address filtering
> > on atusb which makes me realize that maybe we were not talking about
> > the same "filtering" until now.
> >
> > Associations and disassociations now work properly, I'm glad I fixed
> > "everything". I still need to figure out if using the promiscuous mode
> > everywhere is really useful or not (maybe the hardware filters were
> > disabled in this mode and it made it work). However, using the
> > promiscuous mode was the only way I had to receive acknowledgements,
> > otherwise they were filtered out by the hardware (the monitor was
> > showing that the ack frames were actually being sent).
> >
>
> This is correct, the most hardware will turn off automatic
> ackknowledge handling if address filtering is off (I am sure I said
> that before). We cannot handle acks on mac802154 if they are time
> critical.
>
If this is required we should discuss this topic...
- Alex
next prev parent reply other threads:[~2022-09-02 2:39 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-01 14:30 [PATCH wpan-next 00/20] net: ieee802154: Support scanning/beaconing Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 01/20] net: mac802154: Allow the creation of coordinator interfaces Miquel Raynal
2022-07-06 1:51 ` Alexander Aring
2022-08-19 17:11 ` Miquel Raynal
2022-08-23 12:33 ` Alexander Aring
2022-08-23 16:29 ` Miquel Raynal
2022-08-23 21:44 ` Alexander Aring
2022-08-24 7:35 ` Miquel Raynal
2022-08-24 21:43 ` Alexander Aring
2022-08-25 8:40 ` Miquel Raynal
2022-08-26 0:51 ` Alexander Aring
2022-08-26 1:35 ` Alexander Aring
2022-08-26 8:08 ` Miquel Raynal
2022-08-29 2:31 ` Alexander Aring
2022-08-29 8:05 ` Miquel Raynal
2022-08-26 7:30 ` Miquel Raynal
2022-08-24 10:20 ` Miquel Raynal
2022-08-24 12:43 ` Alexander Aring
2022-08-24 13:26 ` Miquel Raynal
2022-08-24 21:53 ` Alexander Aring
2022-08-25 1:02 ` Alexander Aring
2022-08-25 8:46 ` Miquel Raynal
2022-08-25 12:58 ` Miquel Raynal
2022-08-26 1:05 ` Alexander Aring
2022-08-26 7:54 ` Miquel Raynal
2022-08-29 2:52 ` Alexander Aring
2022-08-29 8:02 ` Miquel Raynal
2022-08-30 2:23 ` Alexander Aring
2022-08-31 15:39 ` Miquel Raynal
2022-09-01 0:09 ` Miquel Raynal
2022-09-01 13:09 ` Miquel Raynal
2022-09-02 2:38 ` Alexander Aring
2022-09-03 0:08 ` Miquel Raynal
2022-09-03 14:20 ` Alexander Aring
2022-09-03 14:31 ` Alexander Aring
2022-09-03 16:05 ` Miquel Raynal
2022-09-03 18:21 ` Alexander Aring
2022-09-03 18:29 ` Alexander Aring
2022-09-03 19:07 ` Alexander Aring
2022-09-03 19:10 ` Alexander Aring
2022-09-03 19:40 ` Alexander Aring
2022-09-05 3:16 ` Miquel Raynal
2022-09-05 22:35 ` Alexander Aring
2022-09-02 2:23 ` Alexander Aring
2022-09-02 2:39 ` Alexander Aring [this message]
2022-09-02 2:09 ` Alexander Aring
2022-07-01 14:30 ` [PATCH wpan-next 02/20] net: ieee802154: Advertize coordinators discovery Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 03/20] net: ieee802154: Handle " Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 04/20] net: ieee802154: Trace the registration of new PANs Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 05/20] net: ieee802154: Define frame types Miquel Raynal
2022-07-11 2:06 ` Alexander Aring
2022-08-19 17:13 ` Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 06/20] net: ieee802154: Add support for user scanning requests Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 07/20] net: ieee802154: Define a beacon frame header Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 08/20] net: mac802154: Prepare forcing specific symbol duration Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 09/20] net: mac802154: Introduce a global device lock Miquel Raynal
2022-07-04 1:12 ` Alexander Aring
2022-08-19 17:06 ` Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 10/20] net: mac802154: Handle passive scanning Miquel Raynal
2022-07-15 3:33 ` Alexander Aring
2022-07-15 3:42 ` Alexander Aring
2022-08-19 17:22 ` Miquel Raynal
2022-08-01 23:42 ` Alexander Aring
2022-08-01 23:54 ` Alexander Aring
2022-07-01 14:30 ` [PATCH wpan-next 11/20] net: ieee802154: Add support for user beaconing requests Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 12/20] net: mac802154: Handle basic beaconing Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 13/20] net: ieee802154: Add support for user active scan requests Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 14/20] net: mac802154: Handle active scanning Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 15/20] net: ieee802154: Add support for allowing to answer BEACON_REQ Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 16/20] net: mac802154: Handle received BEACON_REQ Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 17/20] net: ieee802154: Handle limited devices with only datagram support Miquel Raynal
2022-07-15 3:16 ` Alexander Aring
2022-08-19 17:13 ` Miquel Raynal
2022-08-23 12:43 ` Alexander Aring
2022-07-01 14:30 ` [PATCH wpan-next 18/20] ieee802154: ca8210: Flag the driver as being limited Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 19/20] ieee802154: hwsim: Do not check the rtnl Miquel Raynal
2022-07-06 1:23 ` Alexander Aring
2022-08-01 23:58 ` Alexander Aring
2022-08-19 17:09 ` Miquel Raynal
2022-08-25 22:41 ` Miquel Raynal
2022-07-01 14:30 ` [PATCH wpan-next 20/20] ieee802154: hwsim: Allow devices to be coordinators Miquel Raynal
2022-07-11 2:01 ` Alexander Aring
2022-08-19 17:12 ` Miquel Raynal
2022-07-04 1:17 ` [PATCH wpan-next 00/20] net: ieee802154: Support scanning/beaconing Alexander Aring
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