Specific tx rates with ath10k

[Mário Lopes]

Not on that specific setup. I'm using OpenWRT (ath9k & ath10k) and  
Ubuntu 14 (ath9k only).

There are some equipment that send broadcast traffic as unicast in  
order to reduce airtime. I don't know which, just remembered about  
that on some published papers.
I would be very usefull to transmit broadcast traffic as real  
broadcast traffic at HT/VHT speeds in order to reduce air time, which  
speed is based on last sent unicast frame speed or build a pessimist  
rate adaptation algoritm with a sort of link with rate adaptation  
algoritm used for unicast traffic.


Quoting Ben Greear <greearb at candelatech.com>:

> On 03/13/2015 02:37 AM, Mário Lopes wrote:
>> Hi.
>>
>> You can change to fixed bitrate for all types of traffic for  
>> 802.11g/a modes, even on ath10k:
>> for 2.4 GHz @ 54 Mbit/s - iw dev wiface set bitrates legacy-2.4 54
>> for 5 GHz @ 54 Mbit/s - iw dev wiface set bitrates legacy-5 54
>
> Have you actually tried this with an ath10k AP and seen that beacons
> and broadcast go out at 54Mbps?
>
> If so, please let me know what firmware version you are using.
>
>> Setting fixed speed for HT and VHT modes currently only takes  
>> effect on unicast traffic, I would like that this could be applied  
>> to other types of traffic in a
>> future ath9k/ath10k driver.
>
> I know beacons won't go out at HT speeds, at least not with the
> logic that I tried in the firmware...but I have not checked to
> see if my patch allows setting broadcast to HT speeds....
>
> Thanks,
> Ben
>
>>
>>
>> Quoting Ben Greear <greearb at candelatech.com>:
>>
>>> Ath10k firmware gives ability to set specific fixed rate-control rates
>>> for beacons/mgt, multicast, broadcast, and regular traffic.
>>>
>>> The ath10k driver only sets regular traffic currently.
>>>
>>> I had previously hacked my firmware to just set all rate types when
>>> ath10k driver requested to set the rate.
>>>
>>> But, that is not what my customer needs.
>>>
>>> So, I am now planning to add some debugfs entries to allow users to set
>>> beacon/mgt, multicast and broadcast rates individually (I don't  
>>> have time or interest
>>> right now to try patching things top to bottom to try to get this feature
>>> into mac80211 stack or 'iw').
>>>
>>> My question is, for when user just runs a command like this:
>>>
>>> ./local/sbin/iw dev vap1 set bitrates legacy-2.4 6 ht-mcs-2.4
>>>
>>> What is the desired behaviour?
>>>
>>> Set all rates (beacons/mgt, bcast, multicast, regular) to the same
>>> fixed speed, or just a certain subset of these traffic types?
>>>
>>> I can make my firmware do whatever combination is required, and then
>>> users can over-ride the values by using debugfs.....
>>>
>>> As a note, ath10k firmware will NOT send beacons at HT speeds, so
>>> if you fix an HT rate, then firmware will ignore that for the beacons/mgt
>>> ratecontrol type.
>>>
>>> Thanks,
>>> Ben
>>>
>>> --
>>> Ben Greear <greearb at candelatech.com>
>>> Candela Technologies Inc  http://www.candelatech.com
>>>
>>> --
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>>
>>
>>
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>
>
> --
> Ben Greear <greearb at candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com
>



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