Which Firmware to use for STA (999.x crashes...)

[richard mayers]

Sorry for not providing details, I wanted to focus more in the
firmware crash. Therefore you recommend me to use the Candela
firmware. If I just want to run throughput, delay, and fairness
measurements do you think is okay not using the kernel provided by
them ?.

Anyway, for the throughput I do as follows:

Tool : Iperf. (iperf -c server_ip -b 1000M -i 1)
Protocol : UDP
Channel : Over the air, with three antennas.
AP: hostapd, channel 149, 80Mhz. With the same kernel, driver,
firmware, and NIC than the Station.
STA: I get the maximum throughput with MCS = 5/6, when I go further to
7-9 the throughput drops dramatically to 50Mbit/s.

I think the antennas should be separated each other 12 cm, I am wrong
? can this have a high impact on the throughput ?

Richard

2015-05-01 17:52 GMT+02:00 Ben Greear <greearb at candelatech.com>:
> Candela firmware should work just fine for stations.
>
> And, when reporting throughput, you should also provide details
> about how you tested (tool, protocol, over-the-air or not, AP
> involved, etc).
>
> Thanks,
> Ben
>
>
> On 05/01/2015 08:38 AM, richard mayers wrote:
>> Hi everyone!
>>
>> I need to do some 802.11ac measurements. For that I am using the
>> Compex wle900vx.
>>
>> I had a set up in which everything was working quite well, however I
>> had a maximum throughput of 380Mbits/s ( with all the debug options
>> enabled )
>>
>> In this first set up I had been using ubuntu 14.04 LTS, kernel version
>> 3.16, for the driver I used the latest stable backport (3.19) and
>> finally as a firmware the commercial firmware from Candela Tech
>> (latest version) in both the AP and STA.
>>
>> However, I read in the wiki that the latest firmware version for AP is
>> the 10.2.4.48, and the Stations should use 999.999.0.63. For this
>> second set up I changed almost everything:
>>
>> - Upgraded kernel to 4.0.1
>> - Backported drivers from the git Modinfo output -> (backported from
>> Linux (v3.2-rc1-243765-ga2ff7c6) using backports
>> backports-20150424-2-g982)
>>
>> AP : 10.2.4.48 firmware
>> STA : Following the wiki : 999.999.0.63
>>
>> During boot the firmware is loaded without any problem:
>>
>> ath10k_pci 0000:0c:00.0: qca988x hw2.0 (0x4100016c, 0x043202ff) fw
>> 999.999.0.636 api 2 htt 2.1 wmi 1 cal otp max_sta 16
>>
>> However when I associate with the AP, the firmware crashes.
>>
>> [11831.954992] ath10k_pci 0000:0c:00.0: firmware crashed! (uuid n/a)
>> [11831.955031] ath10k_pci 0000:0c:00.0: qca988x hw2.0 (0x4100016c,
>> 0x043202ff) fw 999.999.0.636 api 2 htt 2.1 wmi 1 cal otp max_sta 16
>> [11831.955039] ath10k_pci 0000:0c:00.0: debug 0 debugfs 0 tracing 0
>> dfs 0 testmode 0
>> [11831.957059] ath10k_pci 0000:0c:00.0: firmware register dump:
>> [11831.957068] ath10k_pci 0000:0c:00.0: [00]: 0x4100016C 0x00000000
>> 0x009C4521 0x00000000
>> [11831.957076] ath10k_pci 0000:0c:00.0: [04]: 0x009C4521 0x00060530
>> 0x00000019 0x00955A00
>> [11831.957084] ath10k_pci 0000:0c:00.0: [08]: 0x00306862 0x00000000
>> 0x0040CC94 0x00000020
>> [11831.957091] ath10k_pci 0000:0c:00.0: [12]: 0x00000000 0x00000000
>> 0x00958360 0x0095836B
>> [11831.957098] ath10k_pci 0000:0c:00.0: [16]: 0x80991091 0x0040AD94
>> 0x0043155C 0x00000000
>> [11831.957106] ath10k_pci 0000:0c:00.0: [20]: 0x0000FFFF 0x00000000
>> 0x0043155C 0x00000000
>> [11831.957114] ath10k_pci 0000:0c:00.0: [24]: 0x809A0978 0x0040AD94
>> 0x00439484 0xC1A18834
>> [11831.957121] ath10k_pci 0000:0c:00.0: [28]: 0x809AD1A2 0x0040ADE4
>> 0x00439484 0x0043FB1C
>> [11831.957129] ath10k_pci 0000:0c:00.0: [32]: 0x809B35A3 0x0000001A
>> 0x00440A50 0x0000000E
>> [11831.957136] ath10k_pci 0000:0c:00.0: [36]: 0x00000000 0x00000000
>> 0x00000000 0x00000000
>> [11831.957143] ath10k_pci 0000:0c:00.0: [40]: 0x00000000 0x00000000
>> 0x00000000 0x00000094
>> [11831.957151] ath10k_pci 0000:0c:00.0: [44]: 0x00439DC8 0x00000000
>> 0x00000000 0x00400000
>> [11831.957158] ath10k_pci 0000:0c:00.0: [48]: 0x809AE0B4 0x0040AE04
>> 0x00400000 0x0043FB1C
>> [11831.957166] ath10k_pci 0000:0c:00.0: [52]: 0x00000001 0x00000000
>> 0x00423410 0x00400000
>> [11831.957173] ath10k_pci 0000:0c:00.0: [56]: 0x809AE17E 0x0040AE44
>> 0x0040FE6C 0x0040D310
>> [11832.046908] ath10k_pci 0000:0c:00.0: failed to synchronize monitor
>> vdev 1 stop: -108
>> [11832.046915] ath10k_pci 0000:0c:00.0: failed to stop monitor vdev: -108
>>
>>  I have seen that in the past a lot of people had problems with this
>> firmware but since years have passed maybe the way of solving have
>> evolved.
>>
>> Apart from that I also got the 00:03:07:12:34:56 MAC address issue.
>>
>> Any ideas guys? Should I use the candelatech firmware for the stations ?
>> Richard
>>
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>>
>
>
> --
> Ben Greear <greearb at candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com
>