2012/3/31 Nicolás Echániz <nicoecha...@codigosur.org> > I'm not sure if this is the right place to report/ask about this matter > so I'll try to make it short and please ask for any additional > information that could be important. > > We are building a free network in a small town in Córdoba, Argentina. > The hardware we are using for the nodes is: TPlink MR-3220 + usb wifi > dongle WN722N > > So each node has two interfaces, internal + USB. > > The software is OpenWRT (trunk) and batman-adv as dynamic routing protocol. > > We have been using OpenWRT Rev.29660 for a couple of weeks, but after we > updated to Rev.31077 (to test batman-adv 2012.0.0), the WN722N dongles > (which use ath9k_htc) are always stuck at 1Mbit/s bitrate. This only > happens in ad-hoc mode, infrastructure works fine. > > I am having total breakage of wifi (on 3.3.) at present, but until last week I got good rates out of adhoc on the wndr3800s on both 2.4 and 5 ghz.
I'm kind of hoping you're narrowing where it went bad with your commit range... > We have tested other dongles: WN7200ND, which use rt2800usb and this > problem is not present (bitrate is 150Mbit/s as it should be), same > thing with the internal (ath9k) interfaces in the MR-3220 routers. > > We haven't had the opportunity to trace down the problem to a specific > revision, but we know it is somewhere between r.29660 and r.31077 > > Please let us know what information would be relevant in order to help > nail this problem and we will report it. > > > On a side note, we would like to ask if there's any wifi/usb chipset > that's known to work well in ad-hoc mode. > > There's a atheros based USB stick I've heard good things about (open source drivers too) http://linuxwireless.org/en/users/Drivers/Atheros#USB_Drivers It seems like there has been a movement of late to discard adhoc in favor of... well I don't know, I see new, shiny meshy stuff, but as one example, adhoc is now disabled on most android phones. I'm told it's because adhoc uses more battery, but I tend to think it was because it's old technology that used to 'just work', and we can't have that.... This community network[0] is the first of many we will be building > during this year in the area. We are testing the possibilities of cheap > multi-interface nodes because we are working with a very low income > population. > > That's my own focus too. The architecture I'd settled on was directional nanostation m5s for the longer haul links, and dual channel boxes for the more meshy nodes. I predate batman-adv (been meaning to try it) so I'd settled on babel and AHCP... > > > Cheers, > NicoEchániz > > > [0] http://www.lavecindaria.org.ar/article/quintanacamp-2012/ > > _______________________________________________ > openwrt-devel mailing list > openwrt-devel@lists.openwrt.org > https://lists.openwrt.org/mailman/listinfo/openwrt-devel > -- Dave Täht SKYPE: davetaht US Tel: 1-239-829-5608 http://www.bufferbloat.net
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