WFB not establishing link #83

justas- · 2021-02-03T21:39:30Z

justas-
Feb 3, 2021

I am unable to establish a link between the GS and the drone. I'm using vanilla setup with rtl8812au cards with the patched driver. My syslog after starting GS (drone side is identical apart from the adapter name) is at the bottom. I get TUN adapter but packets do not go through to the other side. I've tried to run Wireshark on both ends and I see a lot of traffic with MAC 132233445505. Not sure if this is WFB traffic or not. wfb-cli reports link as lost.

Feb 3 21:29:48 raspberrypi systemd[1]: Started WFB profile gs.
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Log opened.
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] # iw reg set BO
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] # ifconfig wlx48d890cdb0d5 down
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] # iw dev wlx48d890cdb0d5 set monitor otherbss
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] # ifconfig wlx48d890cdb0d5 up
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] # iw dev wlx48d890cdb0d5 set channel 1 HT20
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Connect telem stream 2(RX), 1(TX) to 127.0.0.1:14550
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] UDPProxyProtocol starting on 56795
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] UDPProxyProtocol starting on 14600
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] UDPProxyProtocol starting on 50925
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Telem RX: /usr/bin/wfb_rx -p 2 -u 14600 -K /etc/gs.key -k 1 -n 2 wlx48d890cdb0d5
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Telem TX: /usr/bin/wfb_tx -p 1 -u 14601 -K /etc/gs.key -B 20 -G long -S 1 -L 0 -M 1 -k 1 -n 2 wlx48d890cdb0d5
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] AntennaFactory starting on 8001
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Started telem rx
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Started telem tx
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Send video stream 3 to 127.0.0.1:5600
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] AntennaFactory starting on 8002
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Started video rx
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Video: /usr/bin/wfb_rx -p 3 -c 127.0.0.1 -u 5600 -K /etc/gs.key -k 8 -n 12 wlx48d890cdb0d5
Feb 3 21:29:49 raspberrypi systemd-udevd[1384]: link_config: autonegotiation is unset or enabled, the speed and duplex are not writable.
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] UDPProxyProtocol starting on 14800
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] UDPProxyProtocol starting on 55966
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Tunnel RX: /usr/bin/wfb_rx -p 5 -u 14800 -K /etc/gs.key -k 1 -n 2 wlx48d890cdb0d5
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Tunnel TX: /usr/bin/wfb_tx -p 4 -u 14801 -K /etc/gs.key -B 20 -G long -S 1 -L 0 -M 1 -k 1 -n 2 wlx48d890cdb0d5
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] AntennaFactory starting on 8003
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Started tunnel rx
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] Started tunnel tx
Feb 3 21:29:49 raspberrypi kernel: [ 5157.518839] device wlx48d890cdb0d5 entered promiscuous mode
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] telem tx: Listen on 14601 for wlx48d890cdb0d5
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] tunnel tx: Listen on 14801 for wlx48d890cdb0d5
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] telem rx: wlx48d890cdb0d5 has DLT_IEEE802_11_RADIO Encap
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] video rx: wlx48d890cdb0d5 has DLT_IEEE802_11_RADIO Encap
Feb 3 21:29:49 raspberrypi python[1386]: 2021-02-03 21:29:49+0000 [-] tunnel rx: wlx48d890cdb0d5 has DLT_IEEE802_11_RADIO Encap
Feb 3 21:30:07 raspberrypi python[1386]: 2021-02-03 21:30:07+0000 [-] tunnel rx: New session detected
Feb 3 21:30:07 raspberrypi python[1386]: 2021-02-03 21:30:07+0000 [-] tunnel rx: 17 packets lost
Feb 3 21:31:22 raspberrypi python[1386]: 2021-02-03 21:31:22+0000 [-] tunnel rx: 82 packets lost
Feb 3 21:31:45 raspberrypi python[1386]: 2021-02-03 21:31:45+0000 [-] tunnel rx: 25 packets lost

Answered by justas-

Feb 27, 2021

I have now managed to make WFB work using RTL8812AU with multiple boards and OSes:

BananaPi Zero / Armbian 21.0.2 / Linux bananapim2zero 5.10.16-sunxi #21.02.2
Raspberry Pi 0W / Rasbian 10.7 Buster / Linux raspberrypi-w0 5.10.11-BPF-CUST+
Raspberry Pi4 / Rasbian 10.7 Buster

Notes to (future myself and) anyone following footsteps:

Kernel with BPF is not mandatory, i.e. Armbian works without net.core.bpf_jit_enable = 1.
Built in adapter is OK as long as their frequencies differ.
(Cannot confirm 100%!) seems that if the built-in WiFi is enabled, REG domains must match
88XXau drivers are v5.6.4.2_35491.20191025
While playing with the different RTL configurations - powercycle the adapter af…

View full answer

svpcom · 2021-02-03T23:15:52Z

svpcom
Feb 3, 2021
Maintainer

According to log session was established, but unstable.

Feb 3 21:30:07 raspberrypi python[1386]: 2021-02-03 21:30:07+0000 [-] tunnel rx: New session detected
Feb 3 21:30:07 raspberrypi python[1386]: 2021-02-03 21:30:07+0000 [-] tunnel rx: 17 packets lost
Feb 3 21:31:22 raspberrypi python[1386]: 2021-02-03 21:31:22+0000 [-] tunnel rx: 82 packets lost

What is in /etc/wifibroadcast.cfg on both nodes?
Do you use wifi channel 1? 2.4GHz band is very polluted and rtl8812au has issues with it. I'll recommend to use 5.8GHz band.
Do you disable these cards in NetworkManager (as described in HOWTO)?
Please attach wifibroadcast logs from both nodes
What is output of ifconfig -a on both nodes?

0 replies

justas- · 2021-02-04T15:50:26Z

justas-
Feb 4, 2021
Author

For these tests I have WiFi cards appx. 10 cm away from each other. Each card has it's own power supply.

The minimal based on setup howto:

GS:

[common]
wifi_channel = 161
wifi_region = 'BO'
debug = False
[gs_mavlink]
peer = 'connect://127.0.0.1:14550'
[gs_video]
peer = 'connect://127.0.0.1:5600'

UAV:

[common]
wifi_channel = 161
wifi_region = 'BO'
[drone_mavlink]
peer = 'listen://0.0.0.0:14550'
[drone_video]
peer = 'listen://0.0.0.0:5602'

I tried channel 1 and 161. Exactly the same behavior
Both GS and Drone are headless, without NetworkManager.

$ sudo systemctl stop NetworkManager
Failed to stop NetworkManager.service: Unit NetworkManager.service not loaded.

● [email protected] - WFB profile drone
Loaded: loaded (/lib/systemd/system/[email protected]; disabled; vendor preset: enabled)
Active: active (running) since Thu 2021-02-04 15:40:14 GMT; 5min ago
Main PID: 699 (python)
Tasks: 6 (limit: 729)
CGroup: /system.slice/system-wifibroadcast.slice/[email protected]
├─699 /usr/bin/python -m telemetry.server drone wlan1
├─733 /usr/bin/wfb_rx -p 1 -u 14700 -K /etc/drone.key -k 1 -n 2 wlan1
├─738 /usr/bin/wfb_tx -p 2 -u 14701 -K /etc/drone.key -B 20 -G long -S 1 -L 0 -M 1 -k 1 -n 2 wlan1
├─743 /usr/bin/wfb_tx -p 3 -u 5602 -K /etc/drone.key -B 20 -G long -S 1 -L 0 -M 1 -k 8 -n 12 wlan1
├─772 /usr/bin/wfb_rx -p 4 -u 14900 -K /etc/drone.key -k 1 -n 2 wlan1
└─773 /usr/bin/wfb_tx -p 5 -u 14901 -K /etc/drone.key -B 20 -G long -S 1 -L 0 -M 1 -k 1 -n 2 wlan1

Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] telem rx: wlan1 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] video tx: Listen on 5602 for wlan1
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] tunnel rx: wlan1 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] tunnel tx: Listen on 14901 for wlan1
Feb 04 15:40:38 raspberrypi-w0 python[699]: 2021-02-04 15:40:38+0000 [-] tunnel rx: New session detected
Feb 04 15:40:38 raspberrypi-w0 python[699]: 2021-02-04 15:40:38+0000 [-] tunnel rx: 8 packets lost
Feb 04 15:42:47 raspberrypi-w0 python[699]: 2021-02-04 15:42:47+0000 [-] tunnel rx: 149 packets lost
Feb 04 15:44:25 raspberrypi-w0 python[699]: 2021-02-04 15:44:25+0000 [-] tunnel rx: 108 packets lost
Feb 04 15:45:22 raspberrypi-w0 python[699]: 2021-02-04 15:45:22+0000 [-] tunnel rx: 62 packets lost
Feb 04 15:45:28 raspberrypi-w0 python[699]: 2021-02-04 15:45:28+0000 [-] tunnel rx: 6 packets lost

Feb 04 15:40:23 raspberrypi-w0 python[699]: 2021-02-04 15:40:23+0000 [-] Log opened.
Feb 04 15:40:23 raspberrypi-w0 python[699]: 2021-02-04 15:40:23+0000 [-] # iw reg set BO
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] # ifconfig wlan1 down
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] # iw dev wlan1 set monitor otherbss
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] # ifconfig wlan1 up
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] # iw dev wlan1 set channel 161 HT20
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] Listen for telem stream 1(RX), 2(TX) on 0.0.0.0:14550
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] UDPProxyProtocol starting on 14550
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] UDPProxyProtocol starting on 14700
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] UDPProxyProtocol starting on 46181
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] Telem RX: /usr/bin/wfb_rx -p 1 -u 14700 -K /etc/drone.key -k 1 -n 2 wlan1
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] Telem TX: /usr/bin/wfb_tx -p 2 -u 14701 -K /etc/drone.key -B 20 -G long -S 1
Feb 04 15:40:24 raspberrypi-w0 python[699]: 2021-02-04 15:40:24+0000 [-] Started telem rx
Feb 04 15:40:25 raspberrypi-w0 python[699]: 2021-02-04 15:40:25+0000 [-] Started telem tx
Feb 04 15:40:25 raspberrypi-w0 python[699]: 2021-02-04 15:40:25+0000 [-] Listen for video stream 3 on 0.0.0.0:5602
Feb 04 15:40:25 raspberrypi-w0 python[699]: 2021-02-04 15:40:25+0000 [-] Started video tx
Feb 04 15:40:25 raspberrypi-w0 python[699]: 2021-02-04 15:40:25+0000 [-] Video: /usr/bin/wfb_tx -p 3 -u 5602 -K /etc/drone.key -B 20 -G long -S 1 -L
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] UDPProxyProtocol starting on 14900
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] UDPProxyProtocol starting on 56365
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] Tunnel RX: /usr/bin/wfb_rx -p 4 -u 14900 -K /etc/drone.key -k 1 -n 2 wlan1
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] Tunnel TX: /usr/bin/wfb_tx -p 5 -u 14901 -K /etc/drone.key -B 20 -G long -S
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] Started tunnel rx
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] Started tunnel tx
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] telem tx: Listen on 14701 for wlan1
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] telem rx: wlan1 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] video tx: Listen on 5602 for wlan1
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] tunnel rx: wlan1 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:40:26 raspberrypi-w0 python[699]: 2021-02-04 15:40:26+0000 [-] tunnel tx: Listen on 14901 for wlan1
Feb 04 15:40:38 raspberrypi-w0 python[699]: 2021-02-04 15:40:38+0000 [-] tunnel rx: New session detected
Feb 04 15:40:38 raspberrypi-w0 python[699]: 2021-02-04 15:40:38+0000 [-] tunnel rx: 8 packets lost
Feb 04 15:42:47 raspberrypi-w0 python[699]: 2021-02-04 15:42:47+0000 [-] tunnel rx: 149 packets lost
Feb 04 15:44:25 raspberrypi-w0 python[699]: 2021-02-04 15:44:25+0000 [-] tunnel rx: 108 packets lost
Feb 04 15:45:22 raspberrypi-w0 python[699]: 2021-02-04 15:45:22+0000 [-] tunnel rx: 62 packets lost
Feb 04 15:45:28 raspberrypi-w0 python[699]: 2021-02-04 15:45:28+0000 [-] tunnel rx: 6 packets lost
Feb 04 15:46:12 raspberrypi-w0 python[699]: 2021-02-04 15:46:12+0000 [-] tunnel rx: 47 packets lost

● [email protected] - WFB profile gs
Loaded: loaded (/lib/systemd/system/[email protected]; disabled; vendor preset: enabled)
Active: active (running) since Thu 2021-02-04 15:40:27 GMT; 7min ago
Main PID: 766 (python)
Tasks: 6 (limit: 3737)
CGroup: /system.slice/system-wifibroadcast.slice/[email protected]
├─766 /usr/bin/python -m telemetry.server gs wlx48d890cdb0d5
├─787 /usr/bin/wfb_rx -p 2 -u 14600 -K /etc/gs.key -k 1 -n 2 wlx48d890cdb0d5
├─788 /usr/bin/wfb_tx -p 1 -u 14601 -K /etc/gs.key -B 20 -G long -S 1 -L 0 -M 1 -k 1 -n 2 wlx48d890cdb0d5
├─791 /usr/bin/wfb_rx -p 3 -c 127.0.0.1 -u 5600 -K /etc/gs.key -k 8 -n 12 wlx48d890cdb0d5
├─816 /usr/bin/wfb_rx -p 5 -u 14800 -K /etc/gs.key -k 1 -n 2 wlx48d890cdb0d5
└─820 /usr/bin/wfb_tx -p 4 -u 14801 -K /etc/gs.key -B 20 -G long -S 1 -L 0 -M 1 -k 1 -n 2 wlx48d890cdb0d5

Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Started tunnel rx
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Started tunnel tx
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] telem tx: Listen on 14601 for wlx48d890cdb0d5
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] tunnel tx: Listen on 14801 for wlx48d890cdb0d5
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] video rx: wlx48d890cdb0d5 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] telem rx: wlx48d890cdb0d5 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:40:30 raspberrypi python[766]: 2021-02-04 15:40:30+0000 [-] tunnel rx: wlx48d890cdb0d5 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:41:32 raspberrypi python[766]: 2021-02-04 15:41:32+0000 [-] tunnel rx: New session detected
Feb 04 15:41:32 raspberrypi python[766]: 2021-02-04 15:41:32+0000 [-] tunnel rx: 75 packets lost
Feb 04 15:46:56 raspberrypi python[766]: 2021-02-04 15:46:56+0000 [-] tunnel rx: 358 packets lost

Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Log opened.
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] # iw reg set BO
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] # ifconfig wlx48d890cdb0d5 down
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] # iw dev wlx48d890cdb0d5 set monitor otherbss
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] # ifconfig wlx48d890cdb0d5 up
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] # iw dev wlx48d890cdb0d5 set channel 161 HT20
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Connect telem stream 2(RX), 1(TX) to 127.0.0.1:14550
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] UDPProxyProtocol starting on 37782
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] UDPProxyProtocol starting on 14600
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] UDPProxyProtocol starting on 57820
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Telem RX: /usr/bin/wfb_rx -p 2 -u 14600 -K /etc/gs.key -k 1 -n 2 wlx48d890cdb0d5
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Telem TX: /usr/bin/wfb_tx -p 1 -u 14601 -K /etc/gs.key -B 20 -G long -S 1 -L 0 -M
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] AntennaFactory starting on 8001
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Started telem rx
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Started telem tx
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Send video stream 3 to 127.0.0.1:5600
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] AntennaFactory starting on 8002
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Started video rx
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Video: /usr/bin/wfb_rx -p 3 -c 127.0.0.1 -u 5600 -K /etc/gs.key -k 8 -n 12 wlx48d8
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] UDPProxyProtocol starting on 14800
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] UDPProxyProtocol starting on 37196
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Tunnel RX: /usr/bin/wfb_rx -p 5 -u 14800 -K /etc/gs.key -k 1 -n 2 wlx48d890cdb0d5
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Tunnel TX: /usr/bin/wfb_tx -p 4 -u 14801 -K /etc/gs.key -B 20 -G long -S 1 -L 0 -M
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] AntennaFactory starting on 8003
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Started tunnel rx
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] Started tunnel tx
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] telem tx: Listen on 14601 for wlx48d890cdb0d5
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] tunnel tx: Listen on 14801 for wlx48d890cdb0d5
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] video rx: wlx48d890cdb0d5 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:40:29 raspberrypi python[766]: 2021-02-04 15:40:29+0000 [-] telem rx: wlx48d890cdb0d5 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:40:30 raspberrypi python[766]: 2021-02-04 15:40:30+0000 [-] tunnel rx: wlx48d890cdb0d5 has DLT_IEEE802_11_RADIO Encap
Feb 04 15:41:32 raspberrypi python[766]: 2021-02-04 15:41:32+0000 [-] tunnel rx: New session detected
Feb 04 15:41:32 raspberrypi python[766]: 2021-02-04 15:41:32+0000 [-] tunnel rx: 75 packets lost
Feb 04 15:46:56 raspberrypi python[766]: 2021-02-04 15:46:56+0000 [-] tunnel rx: 358 packets lost

5:
GS:
$ ifconfig -a
eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether dc:a6:32:56:25:fb txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

gs-wfb: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1446
inet 10.5.0.1 netmask 255.255.255.0 destination 10.5.0.1
inet6 fe80::ddd3:737f:1a98:fb01 prefixlen 64 scopeid 0x20
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12 bytes 720 (720.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1000 (Local Loopback)
RX packets 1603 bytes 81716 (79.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1603 bytes 81716 (79.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.80 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::7e85:49ba:5bbd:1c48 prefixlen 64 scopeid 0x20
ether dc:a6:32:56:25:fc txqueuelen 1000 (Ethernet)
RX packets 1177 bytes 96350 (94.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 399 bytes 81430 (79.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlx48d890cdb0d5: flags=4099<UP,BROADCAST,MULTICAST> mtu 2312
unspec 48-D8-90-CD-B0-D5-30-30-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
RX packets 6211 bytes 253006 (247.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1464 bytes 110957 (108.3 KiB)
TX errors 0 dropped 2 overruns 0 carrier 0 collisions 0

Drone:
$ ifconfig -a
drone-wfb: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1446
inet 10.5.0.2 netmask 255.255.255.0 destination 10.5.0.2
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3 bytes 252 (252.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1000 (Local Loopback)
RX packets 803 bytes 34408 (33.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 803 bytes 34408 (33.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.57 netmask 255.255.255.0 broadcast 192.168.1.255
ether b8:27:eb:73:09:fb txqueuelen 1000 (Ethernet)
RX packets 1066 bytes 81187 (79.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 599 bytes 106921 (104.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlan1: flags=4099<UP,BROADCAST,MULTICAST> mtu 2312
unspec 48-D8-90-CD-B0-C8-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
RX packets 3665 bytes 119703 (116.8 KiB)
RX errors 0 dropped 71 overruns 0 frame 0
TX packets 1508 bytes 92636 (90.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

0 replies

svpcom · 2021-02-04T16:05:59Z

svpcom
Feb 4, 2021
Maintainer

Why drone has wlan0 and wlan1 (used wlan1 for wfb) and gs has wlan0 and wlx48d890cdb0d5 (used wlx48d890cdb0d5 for wfb) if they have the same rtl8812au cards with the same patched driver? It seems that the problem is here

0 replies

justas- · 2021-02-04T16:11:57Z

justas-
Feb 4, 2021
Author

Both GS and UAV have a built-in RPi wi-fi card that I use for console access. Both also have a patched driver and USB connected rtl8812au. I can try and disable built-in cards and use serial console for verification.

0 replies

svpcom · 2021-02-04T16:49:40Z

svpcom
Feb 4, 2021
Maintainer

Check why rtl8812au has different interface names on GS and UAV. Use ethtool -i wlanX to check what driver is used

0 replies

justas- · 2021-02-07T15:32:03Z

justas-
Feb 7, 2021
Author

Is there a way to debug TX chain? I can TX fine from the GS to the drone. When I tcpdump TUN connection on the drone, I see pings from GS coming in and reply being sent, but nothing reaches the GS. Same for the video link - trying with some random nc traffic, I don't see them received on the GS side.

2 replies

svpcom Feb 7, 2021
Maintainer

It seems that your drone card doesn't support injection. TX debug can be done with tcpdump, but you should run it on RX side (on TX side it will show injection even if it is not supported by card)

justas- Feb 7, 2021
Author

Both ends of the link have identical rtl8812au cards. For the sake of testing, I will switch them to see if it changes anything.

justas- · 2021-02-27T21:30:46Z

justas-
Feb 27, 2021
Author

I have now managed to make WFB work using RTL8812AU with multiple boards and OSes:

BananaPi Zero / Armbian 21.0.2 / Linux bananapim2zero 5.10.16-sunxi There's no data in RX computer #21.02.2
Raspberry Pi 0W / Rasbian 10.7 Buster / Linux raspberrypi-w0 5.10.11-BPF-CUST+
Raspberry Pi4 / Rasbian 10.7 Buster

Notes to (future myself and) anyone following footsteps:

Kernel with BPF is not mandatory, i.e. Armbian works without net.core.bpf_jit_enable = 1.
Built in adapter is OK as long as their frequencies differ.
(Cannot confirm 100%!) seems that if the built-in WiFi is enabled, REG domains must match
88XXau drivers are v5.6.4.2_35491.20191025
While playing with the different RTL configurations - powercycle the adapter after each change of frequency / HT / etc.
After each configuration change monitor the actual settings using 'iwconfig'. If the values are not what expected - powercycle the adapter.
RPi W0 is really underpowered, CPU is at 100% during iperf3. Effective data rate is 3.05 Mbits/sec

1 reply

svpcom Feb 28, 2021
Maintainer

I'll recommend to disable CRDA (REG domains) using kernel patches or use BO (Bolivia) - it is most permissive legal reg domain.

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WFB not establishing link #83

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