[OpenWrt-Devel] ath10k-ct 4.19 and IBSS

Tue Jun 25 05:53:44 EDT 2019

On 24.06.19 22:04, Ben Greear wrote:
> On 6/24/19 8:32 AM, Koen Vandeputte wrote:
>> Hi Ben,
>> Hi All,
>>
>> So I'm going to give this another try ..
>> As the IBSS functionality is heavily advertised as a delta to 
>> mainline, it would be very nice to get it working also :)
>>
>> Testing the latest ath10k-ct driver and firmware seems to be a step 
>> back compared to roughly a month ago.
>>
>> I'm currently seeing the firmware crashing, which was not the case 
>> before:
>>
>>
>> ath10k-ct + htt-fw:
>>
>> https://pastebin.com/raw/7Sy9yx6s
>
> Looks like firmware ran out of some WMI event buffers and crashed 
> instead of handling
> it more gracefully.
>
> Please try the attached (untested) firmware and see if it behaves better.
>
Hi Ben,

1 step forward here.

I'm not seeing crashes anymore using the test-firmware.

https://pastebin.com/raw/4ZeXu7iw

I've linked up 2 IBSS devices (wave 1, VHT80)

OLSR traffic (UDP) works and packets here are nicely going back & forth.

Simply pinging (ICMP) between the 2 devices does not work.

When sending 100 pings, (64 byte large)  sometimes 1 gets through .. but 
with a latency of > 500ms

I think if the splat and the beacon spam below could be fixed .. this 
would be a major step forward:

[   30.328423] ------------[ cut here ]------------
[   30.333251] WARNING: CPU: 0 PID: 1578 at /mnt/ramdisk/koen/firmware/builds/generic_rb922/build_dir/target-mips_24kc_musl/linux-ar71xx_mikrotik/ath10k-ct-2019-05-08-f98b6dc4/ath10k-4.19/mac.c:6563 ath10k_mac_vif_beacon_free+0xc7c/0x115c [ath10k_core]
[   30.355636] Modules linked in: mbt ath9k ath9k_common qcserial pppoe ppp_async option cdc_mbim ath9k_hw ath10k_pci ath10k_core ath usb_wwan sierra_net sierra rndis_host qmi_wwan pppox ppp_generic mac80211 iptable_nat iptable_mangle iptable_filter ipt_REJECT ipt_MASQUERADE ip_tables huawei_cdc_ncm ftdi_sio cfg80211 cdc_subset cdc_ncm cdc_ether xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limt
[   30.427331]  nls_utf8 nls_iso8859_1 nls_cp437 authenc ehci_platform sd_mod scsi_mod ehci_hcd gpio_button_hotplug ext4 mbcache jbd2 usbcore nls_base usb_common ptp pps_core mii aead crypto_null cryptomgr crc32c_generic crypto_hash
[   30.448017] CPU: 0 PID: 1578 Comm: wpa_supplicant Not tainted 4.14.129 #0
[   30.454906] Stack : 80500000 804c0870 00000000 00000000 80495404 86fc5a24 8606485c 804e7307
[   30.463402]         804915c8 0000062a 805437d0 000019a3 87d1ed28 00000001 86fc59d8 ebb059e8
[   30.471880]         00000000 00000000 80540000 000068e8 00000000 00000000 00000007 00000000
[   30.480373]         00000123 f55b2536 00000122 00000000 80000000 00000000 87152504 8710ccc4
[   30.488863]         00000009 000019a3 87d1ed28 876fd000 00000000 802a3964 00000000 80540000
[   30.497355]         ...
[   30.499839] Call Trace:
[   30.502320] [<8006c7ac>] show_stack+0x58/0x100
[   30.506838] [<80086de0>] __warn+0xe4/0x118
[   30.510994] [<80086ea4>] warn_slowpath_null+0x1c/0x28
[   30.516158] [<8710ccc4>] ath10k_mac_vif_beacon_free+0xc7c/0x115c [ath10k_core]
[   30.523505] ---[ end trace 83fd3571e310245a ]---
[   33.172852] wlan0: Trigger new scan to find an IBSS to join
[   33.237416] wlan0: Trigger new scan to find an IBSS to join
[   33.243317] wlan0: Trigger new scan to find an IBSS to join
[   33.249205] wlan0: Trigger new scan to find an IBSS to join
[   33.305210] wlan0: Trigger new scan to find an IBSS to join
[   34.049614] wlan0: Trigger new scan to find an IBSS to join
[   34.115369] wlan0: Trigger new scan to find an IBSS to join
[   34.189823] wlan0: Selected IBSS BSSID fa:77:78:55:af:7b based on configured SSID
[   34.280540] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
[   34.288002] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
[   34.295924] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
[   34.303406] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
[   34.310839] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
[   34.318280] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
[   34.325714] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
[   34.333148] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
[   34.340567] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
[   34.348003] ath10k_pci 0000:01:00.0: SWBA overrun on vdev 0, skipped old beacon
...
...

Thanks for your swift reply so far and the test-firmware.

Regards,

Koen

>
>> ath10k-ct + non-htt-fw:
>>
>> https://pastebin.com/raw/bqVqQmXq
>>
>>
>> Mixing upstream ath10k driver with the non-htt CT fw does not work.
>>
>> Errors are seen here regarding missing IE's and stuff.
>> Also IBSS functionality is not shown when running 'iw list'
>
> IBSS requires ct driver plus ct firmware, at least.

Ah, ok. :-)

Thought it was possible based on this one :

https://www.spinics.net/lists/linux-wireless/msg137827.html

>
> I'd expect the regular driver to work in normal STA/AP mode, though it 
> would likely
> warn about IEs.  Should be warning only though.
>
> Thanks,
> Ben
>
>>
>>
>> Kind Regards,
>>
>> Koen
>>
>
>

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