Hi! > > (I could use Intel 3945ABG-based card instead, but I figured out > > ath5k might be easier to hack?) > > > > Is there way to manipulate type of service from userland to get > > similar behaviour without patching kernel? > > If your AP has WMM/QoS then you can use setsockopt(SO_PRIORITY) to > change the TID and thus the AC and get your packets classified as voice > (VO) on wifi, which makes them much more likely to get access to the > medium. That would be equivalent to ping -Q, right? It does not seem to have any effect :-(. I'd expect at least local machine to use shorter waits for medium, and thus drop packets instead of waiting. On Wed 2015-09-23 13:42:36, Bastian Bittorf wrote: > * Pavel Machek <pavel@xxxxxx> [23.09.2015 13:38]: > > Is there way to manipulate type of service from userland to get > > similar behaviour without patching kernel? > > yes, iptables DSCP / DiffServ / Differentiated Services Field > > # you have to add some magic for matching your data > e.g. $IPT -t mangle -I OUTPUT -j DSCP --set-dscp-class CS7 Again, this is ping -Q equivalent, right? I was doing ping -c 300 -i .2 -Q $[56*4] -s 500 amd 300 packets transmitted, 300 received, 0% packet loss, time 60989ms rtt min/avg/max/mdev = 2.155/8.599/44.475/5.677 ms 300 packets transmitted, 300 received, +1 duplicates, 0% packet loss, time 61030ms rtt min/avg/max/mdev = 2.158/23.809/300.956/49.969 ms, pipe 2 I would expect packet loss, but got long delays instead. > also you should consider force the ACK-timing to 450m / Class1 > and forbid retransmission in minstrel Yes, disabling retransmission would be useful. How would I do that? Thanks and best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
