[OpenWrt-Devel] ath10k-ct 4.19 and IBSS

[Koen Vandeputte]

On 09.08.19 15:31, Koen Vandeputte wrote:
>
> On 09.08.19 14:48, Ben Greear wrote:
>> On 8/6/19 2:26 AM, Koen Vandeputte wrote:
>>
>>>>> Hi Ben,
>>>>>
>>>>> I finally managed to get to some time to properly take a look 
>>>>> using a simple setup.
>>>>>
>>>>> Attached all required files to simulate the issue.
>>>>>
>>>>> I compiled the latest OpenWrt master state, (included a full 
>>>>> wpa_supplicant and iperf tools) and ran the 2 starts.
>>>>>
>>>>> Attached also logs as seen from both boards simultaneously.
>>>>>
>>>>>
>>>>> basically:
>>>>>
>>>>> - If the boards finally do link after lots of tries, it will have 
>>>>> a >200ms latency and max speed of about 3Mbit.
>>>>>
>>>>> - The wpa_sup config file is the most basic RSN enabled config.
>>>>>
>>>>> - I also tried the current Master state with/without all custom 
>>>>> pathes, but the result is the same.
>>>>>
>>>>> - wpa_supp also nags about some missing IE's
>>>>>
>>>>>
>>>>> Hw used:
>>>>>
>>>>> - 2x RB-922UAGS containing a on-board ar988x, capable of 30dBm.
>>>>>
>>>>> - 2x standard 5GHz omni antennae
>>>>>
>>>>> - board seperation distance ca 6ft
>>
>> Can you reproduce without encryption enabled?  That makes it easier 
>> to debug
>> packet sniffs.
>>
>> If you just run ping traffic (or very slow speed tcp/udp), do you 
>> still see the issues (like high
>> latency, packet loss, poor on-air encoding rates, etc)?
>>
> currently rebuilding the setup. will get back on this asap.
>> If I build you a debugging firmware, are you able and willing to 
>> reproduce the problem and
>> send me dmesg output as well as on-air packet sniff?
> Very sure!
>>
>> Preferably, with generated traffic with unique packet sizes (ie, ever 
>> increasing, random, or something like
>> that, so I can more easily match up on-air frames with the debugging 
>> output.
>>
>>
>> I believe that the beacon issues are probably a symptom of some other 
>> failure in the transmit and/or
>> receive path.
>>
>> Thanks,
>> Ben
>>
> Lets get this fixed! :-)
>
> Koen
>

Just tested with encryption disabled:

summary:

- speed is looking good. (~130Mbit/s) also link speed is 866Mbit (2x2 radio)

- iw wlan0 confirms 80MHz channel

- Only a single splat seen, no beacon errors

- non-htt firmware


dmesg:  https://pastebin.com/YLbJCDJc


configs:

network={
         ssid="ibsskoen"
         key_mgmt=NONE
         mode=1
         frequency=5745
}

iwinfo:

wlan0     ESSID: "ibsskoen"
           Access Point: B8:69:F4:CF:C6:05
           Mode: Ad-Hoc  Channel: 149 (5.745 GHz)
           Tx-Power: 30 dBm  Link Quality: 70/70
           Signal: -5 dBm  Noise: -102 dBm
           Bit Rate: 866.7 MBit/s
           Encryption: unknown
           Type: nl80211  HW Mode(s): 802.11nac
           Hardware: 168C:003C 19B6:D042 [Generic MAC80211]
           TX power offset: unknown
           Frequency offset: unknown
           Supports VAPs: yes  PHY name: phy0



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