On Apr 10, 2009, at 12:42 AM, Michael Buesch wrote: > On Friday 10 April 2009 00:28:48 Francesco Gringoli wrote: >> You mean that it misses to transmit some frames? Do you have >> hypotheses on why AP mode should complete change the behavior of the >> board from "good enough" to "not working correctly"? > > Practice shows this. It's as simple as that. > Try it, if you don't trust me. No no, I didn't want to say that I don't trust what you say, I too experienced problems with 4318 on linksys. I'm wondering what could be the problem, I was asking if you have any conjecture about.
>>> Of course, there always are exceptions to these rules, because there >>> are about >>> a million completely different 4318 and and 4306 cards out there. >>> So you might be lucky to pick one of the few 4318 that works well in >>> AP mode, or >>> you might pick one of the few 4306 that don't work too well. >> Ok, that could be. I have only 4318 branded as Asus, they are all >> equal. Probably the fact the linksys does not work in AP mode confirm >> what you say. > > I mostly use linksys products for testing. > But I think I could give the asus card a try, if you say it works > better in AP mode. Ok that could be nice. Mine is a mini-pci card, it was a very common board included in WL500G Premium AP. >> I have noticed, however a strange fact with these 4318 based linksys: >> when I set one of them in AP mode, beaconing is perfect and I can >> join >> it from other stations. When I ping the AP from stations I get echo >> reply. If, instead, I ping stations from the AP, no packet is sent! >> at >> all; if I telnet from stations to the AP, e.g., to port 22, 3whs ends >> but then the TCP session dies. The strange fact is that it seems that >> there are problems for all the frames whose generation involves a >> contest switching from userspace to kernel, in other words a complete >> cross of the mac80211+b43 layers. If instead, on the AP, I completely >> bypass the network stack and directly ask b43 to transmit a frame >> (with a modified b43) the frame is transmitted, at every rate I >> choose >> (I choose the rate inside the kernel code, I'm not referring to the >> rate set by iwconfig). >> >> Do you have some of these flawed 4318? > > I don't think the type of device influences whether packets are > dropped > inside of some random kernel subsystem. > > -- > Greetings, Michael. ------- Francesco Gringoli, PhD - Assistant Professor Dept. of Electrical Engineering for Automation University of Brescia via Branze, 38 25123 Brescia ITALY Ph: ++39.030.3715843 FAX: ++39.030.380014 WWW: http://www.ing.unibs.it/~gringoli _______________________________________________ Bcm43xx-dev mailing list Bcm43xx-dev@lists.berlios.de https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
