802.11s channel width settings?

802.11s channel width settings?

[Zach Sherin]

Hi all,

I'm using 802.11s to do mesh networking with ath10k on an OpenWRT
router. My throughput across the 802.11s connections is very low,
around 22 Mbits/s maximum. When I search my device with iw[1], I am
informed that the driver believes it is operating in 20MHz channels.
When I run it in AP mode, I get much faster speeds and iw claims the
interface is acting with an 80 MHz channel.

Is there any way to increase channel widths in 802.11s? If this is an
OpenWRT question and not ath10k I'll head over to the forums, but this
seemed more a driver issue as my wireless config requests wide
channels. Any chance there's a specific version of ath10k I should
push to?

Any information would be much appreciated, and I'll be happy to answer
any questions.

Thanks,
Zach

[1]iw dev mesh info

Inteface mesh
           ifindex 19
           wdev 0x2
           addr ec:08:6b:ae:51:ac
           type mesh point
           wiphy 0
           channel 36 (5180 MHz), width: 20 MHz (no HT), center1: 5180 MHz
           txpower 27 dBm

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: 802.11s channel width settings?

[Zach Sherin]

Apologies for the spam, but for clarity I'm using an Archer C7 v2
router, with the MiniPCIe QCA9880-BR4A (v2) 3x3 a/n/ac PCIe radio
controlled by ath10k, trying to use 802.11ac with 5GHz. I can use the
5GHz band as an AP and get much higher speeds (in the 100's or more)
so I know the 22 Mbits/s is slower than the maximum, though I
certainly could be wrong on the channel widths point (it could be the
modulation scheme, maybe?).

Thanks again!
Zach

On Thu, May 5, 2016 at 2:51 PM, Zach Sherin <zach@netblazr.com> wrote:
> Hi all,
>
> I'm using 802.11s to do mesh networking with ath10k on an OpenWRT
> router. My throughput across the 802.11s connections is very low,
> around 22 Mbits/s maximum. When I search my device with iw[1], I am
> informed that the driver believes it is operating in 20MHz channels.
> When I run it in AP mode, I get much faster speeds and iw claims the
> interface is acting with an 80 MHz channel.
>
> Is there any way to increase channel widths in 802.11s? If this is an
> OpenWRT question and not ath10k I'll head over to the forums, but this
> seemed more a driver issue as my wireless config requests wide
> channels. Any chance there's a specific version of ath10k I should
> push to?
>
> Any information would be much appreciated, and I'll be happy to answer
> any questions.
>
> Thanks,
> Zach
>
> [1]iw dev mesh info
>
> Inteface mesh
>            ifindex 19
>            wdev 0x2
>            addr ec:08:6b:ae:51:ac
>            type mesh point
>            wiphy 0
>            channel 36 (5180 MHz), width: 20 MHz (no HT), center1: 5180 MHz
>            txpower 27 dBm

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: 802.11s channel width settings?

[Bob Copeland]

On Thu, May 05, 2016 at 02:51:27PM -0400, Zach Sherin wrote:
> Is there any way to increase channel widths in 802.11s? If this is an
> OpenWRT question and not ath10k I'll head over to the forums, but this
> seemed more a driver issue as my wireless config requests wide
> channels. Any chance there's a specific version of ath10k I should
> push to?

I'm not sure about OpenWRT's scripts but you can specify the channel width
when setting the frequency (before joining the mesh).

E.g.:

ip link set wlan0 up
iw dev wlan0 set freq 5745 80 5775
iw dev wlan0 mesh join my-vht-mesh

-- 
Bob Copeland %% http://bobcopeland.com/

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: 802.11s channel width settings?

[Zach Sherin]

That is embarrassing that I trusted OpenWRT to have tried that. It
would appear that I can set the frequency manually. Thank you!

On a related note, is there any way to check the modulation that the
radio is using?  I'd like to check all the parameters possible in
order to understand my throughput numbers.

Thanks again for the fix!
Zach

On Thu, May 5, 2016 at 9:32 PM, Bob Copeland <me@bobcopeland.com> wrote:
> On Thu, May 05, 2016 at 02:51:27PM -0400, Zach Sherin wrote:
>> Is there any way to increase channel widths in 802.11s? If this is an
>> OpenWRT question and not ath10k I'll head over to the forums, but this
>> seemed more a driver issue as my wireless config requests wide
>> channels. Any chance there's a specific version of ath10k I should
>> push to?
>
> I'm not sure about OpenWRT's scripts but you can specify the channel width
> when setting the frequency (before joining the mesh).
>
> E.g.:
>
> ip link set wlan0 up
> iw dev wlan0 set freq 5745 80 5775
> iw dev wlan0 mesh join my-vht-mesh
>
> --
> Bob Copeland %% http://bobcopeland.com/

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: 802.11s channel width settings?

[Yeoh Chun-Yeow]

Try use the "iw wlanX station dump" and check the rx bitrate.

----
Chun-Yeow

On Fri, May 6, 2016 at 10:28 PM, Zach Sherin <zach@netblazr.com> wrote:
> That is embarrassing that I trusted OpenWRT to have tried that. It
> would appear that I can set the frequency manually. Thank you!
>
> On a related note, is there any way to check the modulation that the
> radio is using?  I'd like to check all the parameters possible in
> order to understand my throughput numbers.
>
> Thanks again for the fix!
> Zach
>
> On Thu, May 5, 2016 at 9:32 PM, Bob Copeland <me@bobcopeland.com> wrote:
>> On Thu, May 05, 2016 at 02:51:27PM -0400, Zach Sherin wrote:
>>> Is there any way to increase channel widths in 802.11s? If this is an
>>> OpenWRT question and not ath10k I'll head over to the forums, but this
>>> seemed more a driver issue as my wireless config requests wide
>>> channels. Any chance there's a specific version of ath10k I should
>>> push to?
>>
>> I'm not sure about OpenWRT's scripts but you can specify the channel width
>> when setting the frequency (before joining the mesh).
>>
>> E.g.:
>>
>> ip link set wlan0 up
>> iw dev wlan0 set freq 5745 80 5775
>> iw dev wlan0 mesh join my-vht-mesh
>>
>> --
>> Bob Copeland %% http://bobcopeland.com/
>
> _______________________________________________
> ath10k mailing list
> ath10k@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/ath10k

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: 802.11s channel width settings?

[Yeoh Chun-Yeow]

Rate control is done in HW. Not minstrel. Tx Rate reporting is not
there in "iw mesh0 station dump", only Rx Rate.

But by the way, you can set the tx bit rate manually. Refer:
https://wireless.wiki.kernel.org/en/users/drivers/ath10k/debug

----
Chun-Yeow

On Fri, May 6, 2016 at 11:49 PM, Raj Joshi <rajjoshi@comp.nus.edu.sg> wrote:
>
> On May 6, 2016 11:30 PM, "Yeoh Chun-Yeow" <yeohchunyeow@gmail.com> wrote:
>>
>> Try use the "iw wlanX station dump" and check the rx bitrate.
>
> Just curious, wouldn't the rate control algorithm change the rate? Minstrel
> HT - the default one?
>
> I mean, can one actually fix the settings such as VHT MCS 9 + 3 Streams +
> Short GI + 80 MHz channel width and every frame that is sent out *obeys*
> this fixed setting? It would be interesting to know if there is any such way
> - helpful for experimental measurement studies :)
>
> Raj Joshi
>
>> ----
>> Chun-Yeow
>>
>> On Fri, May 6, 2016 at 10:28 PM, Zach Sherin <zach@netblazr.com> wrote:
>> > That is embarrassing that I trusted OpenWRT to have tried that. It
>> > would appear that I can set the frequency manually. Thank you!
>> >
>> > On a related note, is there any way to check the modulation that the
>> > radio is using?  I'd like to check all the parameters possible in
>> > order to understand my throughput numbers.
>> >
>> > Thanks again for the fix!
>> > Zach
>> >
>> > On Thu, May 5, 2016 at 9:32 PM, Bob Copeland <me@bobcopeland.com> wrote:
>> >> On Thu, May 05, 2016 at 02:51:27PM -0400, Zach Sherin wrote:
>> >>> Is there any way to increase channel widths in 802.11s? If this is an
>> >>> OpenWRT question and not ath10k I'll head over to the forums, but this
>> >>> seemed more a driver issue as my wireless config requests wide
>> >>> channels. Any chance there's a specific version of ath10k I should
>> >>> push to?
>> >>
>> >> I'm not sure about OpenWRT's scripts but you can specify the channel
>> >> width
>> >> when setting the frequency (before joining the mesh).
>> >>
>> >> E.g.:
>> >>
>> >> ip link set wlan0 up
>> >> iw dev wlan0 set freq 5745 80 5775
>> >> iw dev wlan0 mesh join my-vht-mesh
>> >>
>> >> --
>> >> Bob Copeland %% http://bobcopeland.com/
>> >
>> > _______________________________________________
>> > ath10k mailing list
>> > ath10k@lists.infradead.org
>> > http://lists.infradead.org/mailman/listinfo/ath10k
>>
>> _______________________________________________
>> ath10k mailing list
>> ath10k@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/ath10k

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: 802.11s channel width settings?

[Zach Sherin]

Thanks! I mostly am interested in knowing the modulation just to keep
track of my theoretical maximum throughput for monitoring. The Rx rate
was changing correctly now, which is great. I know the Tx rate is
totally unreported, but the Rx is all I need. Thanks again for all the
assistance, I think I have everything I need.

Zach

On Fri, May 6, 2016 at 11:56 AM, Yeoh Chun-Yeow <yeohchunyeow@gmail.com> wrote:
> Rate control is done in HW. Not minstrel. Tx Rate reporting is not
> there in "iw mesh0 station dump", only Rx Rate.
>
> But by the way, you can set the tx bit rate manually. Refer:
> https://wireless.wiki.kernel.org/en/users/drivers/ath10k/debug
>
> ----
> Chun-Yeow
>
> On Fri, May 6, 2016 at 11:49 PM, Raj Joshi <rajjoshi@comp.nus.edu.sg> wrote:
>>
>> On May 6, 2016 11:30 PM, "Yeoh Chun-Yeow" <yeohchunyeow@gmail.com> wrote:
>>>
>>> Try use the "iw wlanX station dump" and check the rx bitrate.
>>
>> Just curious, wouldn't the rate control algorithm change the rate? Minstrel
>> HT - the default one?
>>
>> I mean, can one actually fix the settings such as VHT MCS 9 + 3 Streams +
>> Short GI + 80 MHz channel width and every frame that is sent out *obeys*
>> this fixed setting? It would be interesting to know if there is any such way
>> - helpful for experimental measurement studies :)
>>
>> Raj Joshi
>>
>>> ----
>>> Chun-Yeow
>>>
>>> On Fri, May 6, 2016 at 10:28 PM, Zach Sherin <zach@netblazr.com> wrote:
>>> > That is embarrassing that I trusted OpenWRT to have tried that. It
>>> > would appear that I can set the frequency manually. Thank you!
>>> >
>>> > On a related note, is there any way to check the modulation that the
>>> > radio is using?  I'd like to check all the parameters possible in
>>> > order to understand my throughput numbers.
>>> >
>>> > Thanks again for the fix!
>>> > Zach
>>> >
>>> > On Thu, May 5, 2016 at 9:32 PM, Bob Copeland <me@bobcopeland.com> wrote:
>>> >> On Thu, May 05, 2016 at 02:51:27PM -0400, Zach Sherin wrote:
>>> >>> Is there any way to increase channel widths in 802.11s? If this is an
>>> >>> OpenWRT question and not ath10k I'll head over to the forums, but this
>>> >>> seemed more a driver issue as my wireless config requests wide
>>> >>> channels. Any chance there's a specific version of ath10k I should
>>> >>> push to?
>>> >>
>>> >> I'm not sure about OpenWRT's scripts but you can specify the channel
>>> >> width
>>> >> when setting the frequency (before joining the mesh).
>>> >>
>>> >> E.g.:
>>> >>
>>> >> ip link set wlan0 up
>>> >> iw dev wlan0 set freq 5745 80 5775
>>> >> iw dev wlan0 mesh join my-vht-mesh
>>> >>
>>> >> --
>>> >> Bob Copeland %% http://bobcopeland.com/
>>> >
>>> > _______________________________________________
>>> > ath10k mailing list
>>> > ath10k@lists.infradead.org
>>> > http://lists.infradead.org/mailman/listinfo/ath10k
>>>
>>> _______________________________________________
>>> ath10k mailing list
>>> ath10k@lists.infradead.org
>>> http://lists.infradead.org/mailman/listinfo/ath10k

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: 802.11s channel width settings?

[Valo, Kalle]

Zach Sherin <zach@netblazr.com> writes:

> Thanks! I mostly am interested in knowing the modulation just to keep
> track of my theoretical maximum throughput for monitoring. The Rx rate
> was changing correctly now, which is great. I know the Tx rate is
> totally unreported, but the Rx is all I need. Thanks again for all the
> assistance, I think I have everything I need.

IIRC you should actually see the TX rate from fw_stats debugfs file.

-- 
Kalle Valo
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: 802.11s channel width settings?

[Yeoh Chun-Yeow]

Hi, Zach,

I have submitted a patch so that you can configure the VHT80 using
/etc/config/wireless in openwrt, refer here:
https://lists.openwrt.org/pipermail/openwrt-devel/2016-May/041350.html

---
Chun-Yeow

On Sat, May 7, 2016 at 12:32 AM, Valo, Kalle <kvalo@qca.qualcomm.com> wrote:
> Zach Sherin <zach@netblazr.com> writes:
>
>> Thanks! I mostly am interested in knowing the modulation just to keep
>> track of my theoretical maximum throughput for monitoring. The Rx rate
>> was changing correctly now, which is great. I know the Tx rate is
>> totally unreported, but the Rx is all I need. Thanks again for all the
>> assistance, I think I have everything I need.
>
> IIRC you should actually see the TX rate from fw_stats debugfs file.
>
> --
> Kalle Valo

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k