Re: Specific tx rates with ath10k

[Ben Greear <greearb@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@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@candelatech.com>
>> Candela Technologies Inc  http://www.candelatech.com
>>
>> -- 
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> 
> 
> 
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-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com