[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2020-05-20 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #27 from Guy Harris  ---
By the way, is there some form of specification for the peekremote protocol?

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2020-05-20 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #26 from Guy Harris  ---
(In reply to Alexis La Goutte from comment #25)
> (In reply to Nicolas Darchis from comment #23)
> > is it a go for inclusion in the main code ?
> 
> it is available on master branch, it will be available on next major release
> (3.4)

So if it's already *in* the master branch, that means it was deemed OK for
inclusion, I guess

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2020-05-20 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

Alexis La Goutte  changed:

   What|Removed |Added

 Status|CONFIRMED   |RESOLVED
 Resolution|--- |FIXED

--- Comment #25 from Alexis La Goutte  ---
(In reply to Nicolas Darchis from comment #23)
> is it a go for inclusion in the main code ?

it is available on master branch, it will be available on next major release
(3.4)

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2020-05-20 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #24 from Guy Harris  ---
(In reply to Nicolas Darchis from comment #23)
> is it a go for inclusion in the main code ?

What's the URL of the change to be included?

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2020-05-20 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #23 from Nicolas Darchis  ---
is it a go for inclusion in the main code ?

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2020-04-28 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #22 from Gerrit Code Review  ---
Change 36686 merged by Anders Broman:
Peekremote : modified the peekremote dissector to support 11ax

https://code.wireshark.org/review/36686

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-11-26 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #21 from Gerrit Code Review  ---
Change 35238 merged by Guy Harris:
wtap: Add support for 802.11ah and 802.11ax PHYs.

https://code.wireshark.org/review/35238

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-11-26 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #20 from Gerrit Code Review  ---
Change 35238 had a related patch set uploaded by Guy Harris:
wtap: Add support for 802.11ah and 802.11ax PHYs.

https://code.wireshark.org/review/35238

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-11-26 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #18 from Gerrit Code Review  ---
Change 35237 had a related patch set uploaded by Guy Harris:
wtap: Add support for 802.11ah and 802.11ax PHYs.

https://code.wireshark.org/review/35237

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-11-26 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #19 from Gerrit Code Review  ---
Change 35237 merged by Guy Harris:
wtap: Add support for 802.11ah and 802.11ax PHYs.

https://code.wireshark.org/review/35237

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-11-26 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

Guy Harris  changed:

   What|Removed |Added

 Status|INCOMPLETE  |CONFIRMED

--- Comment #17 from Guy Harris  ---
(In reply to Nicolas Darchis from comment #0)
> The PEEKREMOTE dissector does not support 802.11ax currently.
> In Cisco WLC 8.9 software, APs in sniffer mode can sniffer 802.11ax and send
> it on the wire as peekremote-encapsulated.
> 
> I have coded the changes in packet-peekremote.c to support the new flags in
> peekremote header for 802.11ax support.
> However, we can see this variable set for 802.11ac frames "phdr.phy =
> PHDR_802_11_PHY_11AC".
> This points to packet-ieee80211-radiotap where these are used as well.
> It doesn't seem that the 11AX PHY is supported at a radiotap header in the
> latest wireshark code, but i've seen existing bugs about that, so not sure
> what's currently in the works or not ?

Support in the *radiotap* header is not necessary for support with other
metadata headers; the 802.11 pseudo header is not obliged to strictly track the
radiotap header.

We now have PHDR_802_11_PHY_11AX, which is reported as "802.11ax (HE)" in the
tip of the master branch.  Please submit any additional changes needed; if the
pseudo-header is changed, but doesn't provide enough data for radiotap as a
result, we'll just further change the pseudo-header - this stuff isn't targeted
for 3.2 at this point, so it'll be in 3.4, and we have plenty of time to change
it.

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-11-26 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #16 from Guy Harris  ---
(In reply to Richard Sharpe from comment #14)
> Here is a comment from Johannes Berg about this:
> 
> -
> Reading that discussion, I think there are just different
> interpretations of the term "PHY" in use.
> 
> I would have interpreted it like you, thinking the "PHY" is a piece of
> hardware that cannot actually change.
> 
> However, Guy et al are interpreting it like a spec term, which you can
> see e.g. in comment 11:
> 
> "Even an 11AX AP will still send the beacons using [the] 802.11a PHY at
> 6mbps."
> 
> If you read this "802.11a PHY" as meaning "as defined in the 802.11a
> amendment", you can sort of see where they're coming from.
> 
> Ultimately, PHDR_802_11_PHY_11AX does make sense, and should be set by
> the radiotap code if the HE field is present.

That's it.

The *hardware* on my machine, a Broadcom BCM43602, is capable of handling:

* the high rate direct sequence spread spectrum (HR/DSSS) PHY specification;
* the orthogonal frequency division multiplexing (OFDM) PHY specification;
* the extended rate PHY (ERP) specification;
* the high-throughput (HT) PHY specification;
* the very high throughput (VHT) PHY specification

and probably even

* the DSSS PHY specification for the 2.4 GHz band designated for ISM
applications.

Right now, it's using the extended rate PHY specification for most traffic,
because that's the most the access point does.

The driver's radiotap implementation reports the extended rate PHY even for
1Mb/sec beacons received from the AP, which are probably sent using the DSSS
PHY specification - an AP advertising its presence has to use the oldest
tiredest PHY specification that some old tired potential client might be using,
so it goes back before even 802.11b.

So - just as is the case for Ethernet, where an Ethernet PHY chip can handle
multiple different physical layers - a given 802.11 chip can handle multiple
different physical layers.

Thus, "the phy for a particular interface" does not and cannot always refer to
a particular physical layer for that interface, as most Ethernet and 802.11
interfaces these days can handle *multiple* physical layers; it would have to
be an indication of the hardware on the chip, e.g. an option containing a
string such as "Broadcom BCM43602".  There could be an indication of the *set*
of physical layers that the device supports, but that wouldn't be *a* physical
layer.

And giving only the *fastest*, or the *shiniest and newest* physical layer,
that the hardware supports wouldn't tell you which physical layer or layers
were actually used during the capture - my adapter can go up to 802.11ac, but
it's only using 11g because that's all our AP does.

> I guess the question is:
> 
> Do we need to know the highest PHY type (SPEC version) detected on a
> particular STA?

Not as far as I can tell, because there is no guarantee that the highest PHY
type is at all being *used*.

> As Johannes says, we will only see HE elements in the radiotap header if the
> packets are HE packets.

Exactly.  What matters for a *packet* is "which PHY was used for that packet",
not "what's the fastest PHY that the interface could handle, regardless of
whether it's using it right now or not?"

> At the moment there is no code that uses does things differently if the STA
> is an 802.11ax STA

If by "802.11ax STA" you mean "a STA whose hardware/firmware/software supports
the current draft of the high efficiency PHY", there is no particular reason to
do anything differently if, for example, that STA were to be carried into our
house and it were to associate with our network, as it'll still just be using
its extended rate PHY capabilities.

What might need to be done differently would be handling of *individual
packets* using the high efficiency PHY; presumably, when the radio metadata is
in a radiotap header, those would be packets containing the HE field:

http://www.radiotap.org/fields/HE

I'll check in a fix to set the phy field of the radio information pseudo-header
to PHDR_802_11_PHY_11AX in the radiotap dissector if an HE field is seen, and
to report PHDR_802_11_PHY_11AX as "802.11ax" in the radio metadata dissector.

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-11-26 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

Guy Harris  changed:

   What|Removed |Added

  Attachment #17092|0   |1
is obsolete||

--- Comment #15 from Guy Harris  ---
Created attachment 17489
  --> https://bugs.wireshark.org/bugzilla/attachment.cgi?id=17489&action=edit
gzipped peekremote capture with 8 spatial streams on 11ax

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-05-20 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #14 from Richard Sharpe  ---
Here is a comment from Johannes Berg about this:

-
Reading that discussion, I think there are just different
interpretations of the term "PHY" in use.

I would have interpreted it like you, thinking the "PHY" is a piece of
hardware that cannot actually change.

However, Guy et al are interpreting it like a spec term, which you can
see e.g. in comment 11:

"Even an 11AX AP will still send the beacons using [the] 802.11a PHY at
6mbps."

If you read this "802.11a PHY" as meaning "as defined in the 802.11a
amendment", you can sort of see where they're coming from.

Ultimately, PHDR_802_11_PHY_11AX does make sense, and should be set by
the radiotap code if the HE field is present.
--

I guess the question is:

Do we need to know the highest PHY type (SPEC version) detected on a particular
STA?

If so, I can imagine, and have added such code elsewhere, to track things like
the highest PHY type seen for a particular STA.

As Johannes says, we will only see HE elements in the radiotap header if the
packets are HE packets.

At the moment there is no code that uses does things differently if the STA is
an 802.11ax STA, however there is such a need with S1G (802.11ah).

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-05-20 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #13 from Gerrit Code Review  ---
Change 33280 merged by Alexis La Goutte:
wtap: Add support for 802.11ah and 802.11ax PHYs.

https://code.wireshark.org/review/33280

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-05-20 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #12 from Gerrit Code Review  ---
Change 33280 had a related patch set uploaded by Richard Sharpe:
wtap: Add support for 802.11ah and 802.11ax PHYs.

https://code.wireshark.org/review/33280

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-05-02 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #11 from Nicolas Darchis  ---
(In reply to Richard Sharpe from comment #9)
> Hmmm, another thought is that the PHY is not really a per-packet thing.
> 
> Presumably the PHY cannot change.
> 
> Maybe there should be a separate pcapng header that describes the phy for a
> particular interface or a field in the interface header?

Richard, the PHY is definitely per-packet. Even an 11AX AP will still send the
beacons using 802.11a PHY at 6mbps. So a client station will also send its data
using HE PHY and then send ACKS and other control frames using another PHY.

I think PHDR_802_11_PHY_11AX has to be defined. But it seemed to me that it's
more than just a definition required, as the PHDR_802_11_PHY_11AC has some
handling code as well, it's not just a PHY defined.
This is where I stopped because I'm unsure of the interactions with other
things. Right now my modification shows that there is a 802.11ax flag in
peekremote header and it shows the correct MCS rate for HE but the radio header
inside is decoded like 802.11ac due to this PHDR_802_11_PHY_11AX not defined
yet.

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #10 from Guy Harris  ---
(In reply to Richard Sharpe from comment #9)
> Hmmm, another thought is that the PHY is not really a per-packet thing.
> 
> Presumably the PHY cannot change.

Why not?

What if, for example, you move out of the range of an AP that supports the HT
PHY (11n) and into the range of an AP that only supports the OFDM (11a) or ERP
(11g) PHY?

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #9 from Richard Sharpe  ---
Hmmm, another thought is that the PHY is not really a per-packet thing.

Presumably the PHY cannot change.

Maybe there should be a separate pcapng header that describes the phy for a
particular interface or a field in the interface header?

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #8 from Richard Sharpe  ---
(In reply to Guy Harris from comment #7)
> (In reply to Richard Sharpe from comment #5)
> > Most likely the problem here is that the current radiotap 11AX code is
> > simply not handling the phy correctly and setting it in the phdr.
> 
> Given that there is no PHDR_802_11_PHY_11AX (or PHDR_802_11_PHY_11AY)
> defined in wiretap/wtap.h, it is literally *impossible* for that code to
> handle the PHY correctly and set it in the phdr.

Yeah.

I think we definitely need a PHDR_802_11_PHY_11AX definition and maybe also a
PHDR_802_11_11AH as well (for S1G).

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #7 from Guy Harris  ---
(In reply to Richard Sharpe from comment #5)
> Most likely the problem here is that the current radiotap 11AX code is
> simply not handling the phy correctly and setting it in the phdr.

Given that there is no PHDR_802_11_PHY_11AX (or PHDR_802_11_PHY_11AY) defined
in wiretap/wtap.h, it is literally *impossible* for that code to handle the PHY
correctly and set it in the phdr.

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #6 from Richard Sharpe  ---
After discussing this with Johannes, it seems that what we can do is use the
presence of the HE header to indicate that the PHY is an 802.11ax phy.

However, if frames are captured at HT or VHT rates, and there is no HE header
that might miss the fact that the PHY is an HE PHY.

There will also be an S1G header in the very near future to worry about.

Finally, perhaps we need a new PHY header for RADIOTAP where the capturing
software can unambiguously indicate the PHY that capturing was done on.

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #5 from Richard Sharpe  ---
(In reply to Alexis La Goutte from comment #3)
> Bonjour Nicolas,
> 
> Do you plan to push your change ?
> 
> About radiotap header, we following spec... (if remenber the radiotap header
> for 802.11ax is not yet finished) Richard can you confirm ?

Well, the radiotap header definition for 11AX is mostly done.

Most likely the problem here is that the current radiotap 11AX code is simply
not handling the phy correctly and setting it in the phdr.

I notice this field in the HE header:

data Bandwidth/RU allocation (0=20, 1=40, 2=80, 3=160/80+80, 4=26-tone RU,
5=52-tone RU, 6=106-tone RU, 7=242-tone RU, 8=484-tone RU, 9=996-tone RU,
10=2x996-tone RU).

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #4 from Guy Harris  ---
(In reply to Nicolas Darchis from comment #0)
> It doesn't seem that the 11AX PHY is supported at a radiotap header in the
> latest wireshark code, but i've seen existing bugs about that, so not sure
> what's currently in the works or not ?

Radiotap 11ax support isn't necessary to support 11ax in other 802.11 radio
metadata headers; struct ieee_802_11_phdr can have 11ax support added without
radiotap support, although if radiotap support is under development, it should
add that support in a fashion that could be used by the current proposed
radiotap support.

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

Guy Harris  changed:

   What|Removed |Added

   Hardware|x86 |All

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

Alexis La Goutte  changed:

   What|Removed |Added

 CC||alexis.lagou...@gmail.com,
   ||realrichardsha...@gmail.com
Version|3.0.1   |Git
   Severity|Major   |Enhancement
 OS|Mac OS X 10.4   |All
 Ever confirmed|0   |1
 Status|UNCONFIRMED |INCOMPLETE

--- Comment #3 from Alexis La Goutte  ---
Bonjour Nicolas,

Do you plan to push your change ?

About radiotap header, we following spec... (if remenber the radiotap header
for 802.11ax is not yet finished) Richard can you confirm ?

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #2 from Nicolas Darchis  ---
Created attachment 17093
  --> https://bugs.wireshark.org/bugzilla/attachment.cgi?id=17093&action=edit
screenshot

screenshot showing the modifications : 160mhz flag added, 11ax flag added, MCS
coding rates extended to 11.

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[Wireshark-bugs] [Bug 15740] Support for 11ax in PEEKREMOTE

2019-04-30 Thread bugzilla-daemon
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15740

--- Comment #1 from Nicolas Darchis  ---
Created attachment 17092
  --> https://bugs.wireshark.org/bugzilla/attachment.cgi?id=17092&action=edit
peekremote capture with 8 spatial streams on 11ax

This is a sniffer trace containing packets sent at MCS 11 802.11ax

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