[Olsr-users] Fwd: Question about hidden node behavior

[Teco Boot]

Jumping in a bit late.
Madwifi is 802.11e capable. It needs a patch for support in ad hoc mode (ticket #1871).
Then, marked priority packets can take media access priority.
DSCP to 11e mapping needs code adjustments and recompile.

Does anyone use this for OLSR packets? Give it a try?
I am aware of tests with test-flows only.

Thanks, Teco


Op 15 jan 2011, om 17:22 heeft Markus Kittenberger het volgende geschreven:

> 
> 
> On Sat, Jan 15, 2011 at 4:06 PM, Juliusz Chroboczek <(spam-protected)> wrote:
> 
> i just retestet with newer versions ath9k (openwrt trunk),.. (as unfortunately last time i used a "release", and not trunk )-;)
> 
> and now ath9k did as well as ath5k!
> 
> so we "just" need to get rid of madwifi in our meshes, and QoS would be as "easy" again as it used to be on WRT54GL & co *G
> 
> > q1  q2  q3 driver
> > 4.0 0.0 0.0 b43-legacy
> > 4.0 0.0 0.0 ath5k (pci)
>  > 2.5 1.5 0.0 ath9k (pci) old )-;
> 4.0 0.0 0.0 ath9k newer 
> > 1.3 1.3 1.3 madwifi (ahb)
> 
> Interesting.  What are the packet drop figures (ifconfig)?
> i "never" saw ifconfig stating any dropped packets (at least on any openwrt router)
> 
> but tc- s qdisc reports the drops,..
> 
> here the results for ath9k and ath5k
> 
> input:
> 100k packets in each of 3 udp-streams (via eth1)
> 
> wlan0 IEEE 802.11abgn ESSID:"test" 
> Mode:Ad-Hoc Frequency:2.412 GHz Cell: 12:34:56:78:90:AB 
> Tx-Power=3 dBm 
> RTS thr:off Fragment thr:off
> Encryption key:off
> Power Management:off
> 
> wlan0 Link encap:Ethernet HWaddr 00:0C:42:61:05:21 
> inet addr:192.168.2.2 Bcast:192.168.2.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:18 errors:0 dropped:0 overruns:0 frame:0
> TX packets:67135 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000 
> RX bytes:756 (756.0 B) TX bytes:101346300 (96.6 MiB)
> 
> qdisc prio 1: dev wlan0 root refcnt 5 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1
> Sent 100161070 bytes 67135 pkt (dropped 227096, overlimits 0 requeues 32671) 
> rate 0bit 0pps backlog 0b 0p requeues 32671 
> qdisc sfq 10: dev wlan0 parent 1:1 limit 127p quantum 1514b perturb 10sec 
> Sent 98195980 bytes 65815 pkt (dropped 32261, overlimits 0 requeues 0) 
> rate 0bit 0pps backlog 0b 0p requeues 0 
> qdisc sfq 20: dev wlan0 parent 1:2 limit 127p quantum 1514b perturb 10sec 
> Sent 1160902 bytes 781 pkt (dropped 97310, overlimits 0 requeues 0) 
> rate 0bit 0pps backlog 0b 0p requeues 0 
> qdisc sfq 30: dev wlan0 parent 1:3 limit 127p quantum 1514b perturb 10sec 
> Sent 804188 bytes 539 pkt (dropped 97525, overlimits 0 requeues 0) 
> rate 0bit 0pps backlog 0b 0p requeues 0 
> 
> ath5k
> 
> wlan0 IEEE 802.11abg ESSID:"test" 
> Mode:Ad-Hoc Frequency:2.412 GHz Cell: 12:34:56:78:90:AB 
> Tx-Power=3 dBm 
> RTS thr:off Fragment thr:off
> Encryption key:off
> Power Management:off
> 
> wlan0 Link encap:Ethernet HWaddr 00:0C:42:2B:A4:E9 
> inet addr:192.168.2.2 Bcast:192.168.2.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:21 errors:0 dropped:0 overruns:0 frame:0
> TX packets:73147 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000 
> RX bytes:882 (882.0 B) TX bytes:110421520 (105.3 MiB)
> 
> qdisc prio 1: dev wlan0 root refcnt 5 bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1
> Sent 109133874 bytes 73147 pkt (dropped 223235, overlimits 0 requeues 2674) 
> rate 0bit 0pps backlog 0b 0p requeues 2674 
> qdisc sfq 10: dev wlan0 parent 1:1 limit 127p quantum 1514b perturb 10sec 
> Sent 107133060 bytes 71805 pkt (dropped 26982, overlimits 0 requeues 0) 
> rate 0bit 0pps backlog 0b 0p requeues 0 
> qdisc sfq 20: dev wlan0 parent 1:2 limit 127p quantum 1514b perturb 10sec 
> Sent 1450266 bytes 973 pkt (dropped 97834, overlimits 0 requeues 0) 
> rate 0bit 0pps backlog 0b 0p requeues 0 
> qdisc sfq 30: dev wlan0 parent 1:3 limit 127p quantum 1514b perturb 10sec 
> Sent 550548 bytes 369 pkt (dropped 98419, overlimits 0 requeues 0) 
> rate 0bit 0pps backlog 0b 0p requeues 0 
> 
> the reason why queue 20: and 30: manage to send more than 0pkt, ist that my streams start/end not exactly simultaneously, and even if they would the first 128 pkt aren`t dropped at the beginning,..
> 
> Markus
> 
> p.s. i seem to have ~ 2% packetloss on my ethernet interface *G
>  
> 
>                                        Juliusz
> 
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