Date: Mon, 10 Oct 2005 09:57:44 +0200 From: Marcin Jessa <lists@yazzy.org> To: Sten Daniel =?ISO-8859-1?Q?S=F8rsdal?= <lists@wm-access.no> Cc: freebsd-net@freebsd.org Subject: Re: How connect 2 PC with ath in hostap mode ? Message-ID: <20051010095744.7e35a863.lists@yazzy.org> In-Reply-To: <4349BE4F.9030102@wm-access.no> References: <20050926195807.GD95971@sandvine.com> <17208.30606.117170.36398@khavrinen.csail.mit.edu> <20050927001650.GA9994@sandvine.com> <20050927180021.GB9994@sandvine.com> <433A2882.4030003@freebsd.org> <433A2D6E.7020205@freebsd.org> <20050928152112.GC9994@sandvine.com> <2262110.20050928194326@mail.ru> <584642479.20050930101019@mail.ru> <20050930095743.402e56cd.lists@yazzy.org> <372828116.20051004102540@mail.ru> <20051004093517.15e368f2.lists@yazzy.org> <1721705859.20051004163721@mail.ru> <20051004151842.66ffca58.lists@yazzy.org> <4349BE4F.9030102@wm-access.no>
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On Mon, 10 Oct 2005 03:05:19 +0200 Sten Daniel S=F8rsdal <lists@wm-access.no> wrote: What's exactly the point of this email? I don't see any help being provided here. The table in question is removed. I wasn't aware of it being copyrighted. Next time please contact me _first_ if you're in doubt of something.=20 And when it comes to mikrotik, you can ask them to release their GPLd code first before running to them like a stupid dog telling on someone who used their freely avaliable information published on the web. > Marcin Jessa wrote: > > On Tue, 4 Oct 2005 16:37:21 +0400 > > Andrey Smagin <samspeedu@mail.ru> wrote: > >=20 > >>Hello Marcin, > >>Tuesday, October 4, 2005, 11:35:17 AM, you wrote: > >> > >>MJ> How are you bridging the interfaces? What kind of bridging > >>MJ> mechanism are you using? > >> > >> In FreeBSD: > >> kldload ath, ath_hal, bridge, fxp > >=20 > > Recompile your kernel with following options. > > device wlan # 802.11 support > > device ath > > device ath_hal > > device ath_rate_sample > >=20 > >>On both host: > >> ifconfig_ath0=3D"inet ssid 1234 channel 6 mode 11g mediaopt adhoc" > >>in sysctl.conf > >> hw....bridge.config=3Dath0:1,fxp0:1 > >> hw....bridge.enable=3D1 > >> =20 > >> ipfw allow ip from any to any > >>in this mode speed about 8KBy/s > >=20 > > Try to use if_bridge instead > > ifconfig bridge0 create up > > ifconfig bridge0 addm ath0 fxp0=20 > > etc... > > The "old" bridge code is removed from CURRENT anyway. > >=20 > > Try to play with different sysctl values for ath as well, it may or > > may not have an impact on your performance. >=20 > If you want to be vague, why not add a disclaimer to your e-mails? >=20 > >> ifconfig_ath0=3D"inet ssid 1234 channel 6 media OFDM54 mode 11g > >>mediaopt adhoc" increase speed up to 45-50 KBy/s > >=20 > > Right, still pretty little. You should get between 2-7 MB/s >=20 > Stating the obvious? >=20 > >>Bridging work fine and uptime for both host more > >>wheek under full load :) (40KBy/s over wireless) > >>Some strange - ping report low average delay about > >>0.700ms for any host in another net segment. > >=20 > > Try to adjust values of ACK timing, I have made a table with some > > proposed values: > > http://www.wifibsd.org/docs/atheros.php >=20 > Taking credit for other peoples work again? Appended and attached is > an e-mail from the authors of the ack timings. They wished to relay > to you that you have copied the mikrotik routeros documentation > without consent and thus potentially violated the copyright. >=20 > [...snip...] >=20 > >> > >>MJ> I am not sure why you have such a speed loss running in adhoc > >>MJ> mode. What I noticed on NetBSD (where the ath driver is not yet > >>MJ> fully ported) was I got pretty decent speed with the same setup > >>MJ> as yours (2xath in adhoc bridged with wired nics) but my > >>MJ> embedded devices allways crashed when I sent over many small > >>MJ> packets. > >> I think this is a driver problem, two ap sucessfully connect > >>with each other, why hostap can't do this ?=20 >=20 > Because it would require WDS or other extension to the standard. >=20 > > That's becouse FreeBSD ath hostap is for access points , not for > > interaction between two APs. >=20 > FreeBSD ath hostap is for AP's not for interaction between AP's? > Where were you going with that, exactly? >=20 > [...snip...] >=20 > > Did you run tcpdump on both the hosts to find out what may be > > causing your problems? > > I will test adhoc between two atheros boxes at home > > today.=20 >=20 > Did your "atheros boxes" perform any better? >=20 > ---------------------------[ Appended > e-mail ]-------------------------- Subject: [Ticket#: > 2005100716000313] [Fwd: Re: How connect 2 PC with ath in hosta [...] > From: "MikroTik Support [Dmitry]" <support@mikrotik.com> > Date: Fri, 07 Oct 2005 17:09:55 +0300 > To: Sten Daniel S=F8rsdal <list@wm-access.no> >=20 > Hello, >=20 > The first table I've got from our developers, and I really have no > idea where did it come from, the available frequencies table is freely > accessible via RouterOS console and also may be obtained from atheros > cards' eeprom. But the second one (that about ACK times) is authored > here. Me and one my collegue have invested much time into making this > table and his claims can be considered as copyright violation. I am > sure he can not provide any proof of his authorship, but I still have > few pieces of paper with some weird formulae lost somewhere on my > table. Thank you for pointing out this issue, can you also write back > to the list for me? >=20 > Regards, > Dmitry >=20 > Sten Daniel S=F8rsdal <list@wm-access.no> wrote: >=20 > >> Apologies for the inconvenience but on the freebsd-net@freebsd.org > >> mailing list there is a guy that claims he wrote the tables > >> found here > >> (http://www.wifibsd.org/docs/atheros.php). > >> > >> Which are identical (aside from font formatting) to the ones > >> found here: > >> (http://www.mikrotik.com/docs/ros/2.9/interface/wireless). > >> > >> Who's material is it? > >> -- > >> Sten Daniel S=F8rsdal > ----------------------------------------------------------------------- >=20 >=20 > --=20 > Sten Daniel S=F8rsdal >=20
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