[Babel-users] breaking the ath9k in adhoc mode with the new fq_codel implementation

[Dave Taht]

So, thank you for exposing a bug in my code today. The new ath9k
fq_codel code at the 802.11 mac layer bypasses the qdisc...


root at dancer:~/Pictures# tc -s qdisc show dev wlp2s0
qdisc noqueue 0: root refcnt 2
 Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
 backlog 0b 0p requeues 0

and somewhere IFF_RUNNING is no longer being set when iwconfig is in
adhoc mode... so I ended up with the infinit txcost

root at dancer:~/Pictures# ifconfig wlp2s0
wlp2s0    Link encap:Ethernet  HWaddr 00:21:63:2f:f2:f4
          inet addr:172.26.17.246  Bcast:255.255.255.255  Mask:255.255.255.255
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:41177 errors:0 dropped:0 overruns:0 frame:0
          TX packets:27218 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:13436569 (13.4 MB)  TX bytes:11838910 (11.8 MB)

root at dancer:~/Pictures# iwconfig wlp2s0
wlp2s0    IEEE 802.11abgn  ESSID:"babel"
          Mode:Ad-Hoc  Frequency:2.437 GHz  Cell: 32:DD:4C:C7:F8:87
          Tx-Power=16 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off

and after I unwedge the darn thing out of adhoc and back into sta...
life is much better.

UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

http://www.taht.net/~d/unwedged.png
http://www.taht.net/~d/unwedged_eth0down.png

Checking around, I am seeing no "running" field on the rpi2 which
might explain why it's wifi doesn't work with babel - that's running
the base OS and a "panda" usb stick in adhoc.

I AM seeing the running field on the rpi3, but that has kernel issues...

I can try to sum up everything that broke on every machine, but my
head hurts, and I'm going back to what I was doing in the first place.


Dave Täht
Let's go make home routers and wifi faster! With better software!
https://www.gofundme.com/savewifi