Date: Sun, 16 Dec 2012 08:47:24 -0800 From: Adrian Chadd <adrian@freebsd.org> To: rank1seeker@gmail.com Cc: freebsd-wireless@freebsd.org Subject: Re: Atheros chip for FreeBSD Access Point Message-ID: <CAJ-Vmon%2BOzgNA0c%2B%2BE7k%2BOJ%2BAhSrXDSR_t18A%2B1rz=nmaCsJsQ@mail.gmail.com> In-Reply-To: <20121216.143815.770.4@DOMY-PC> References: <20121216.143815.770.4@DOMY-PC>
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On 16 December 2012 06:38, <rank1seeker@gmail.com> wrote: > I need a card(PCI/PCIe) with Atheros bassed chip, for hostAP with 5Ghz + n support Hi! > After searching '/sys/dev/ath' for 'hostap' on '9.0-RELEASE-p5', 'AR5416' came out as a lattest chip, which supports it + N ready + supports 5ghz + supports hardware encription > Exactlly ALL requierements which I target for! Yup! > However looking at: > http://wiki.freebsd.org/dev/ath_hal%284%29/HardwareSupport > Scetion: 'Known chipset issues/limitations/bugs' > -------- > AR5416 (Mine choice) / AR5418 > > interrupt read-and-clear bug Every chip up until the AR938x has this bug. It's ok, I've worked around it. > PHY register read corruption bug I need to finish this WAR, but it's not a problem. > 8K max aggregate size if RTS protected, otherwise 64K max size This results in reduced throughput in 802.11n modes. It's fine, you can still get > 150mbit TCP out of it in quiet conditions; it just means in noisier conditions the smaller RTS size means you end up with lower performance. > radar detection limited to primary channel only We don't do radar detection yet, so no worries. > can't do 4-addr frames with aggregation; thus it can't participate in WDS without local (Atheros) extensions I haven't made WDS + 11n work right. > block-ack issues with multi-ssid mode (?); thus aggregation is only supported on the first (lowest?) mac address. Or, just don't create more than one virtual 11n-enabled interface. Yup, only one VAP supported for 11n + aggregation. > -------- > I can't decrypt those sentences, so ... > Should I be worried about them, as AP must give best speed and reliability. Then you shouldn't go with the AR5416. > > > Then again, looking at lattes 'AR9287' chip - my WOULD_LIKE choice The AR9287 has almost all of the above bugs fixed. But it's only 2GHz. > -------- > AR9227/AR9287 > > interrupt read-and-clear bug > -------- > > But it doesn't seem to support hostAP mode! It does! > If it does, then correct me! > Rememeber, I was searching '9.0-RELEASE-p5' code tree! > > > Looks like my best bet is: > AR5416 (with radio AR5133), but latest is AR9287 Yes, but if you need 2/5GHz support, I suggest grabbing an AR9220/AR9280 and using that. > Additionally 'AR5416' supports hardware encription, does 'AR9287' too? Yup, all the Atheros chips support hardware encryption. Everything AR5212 and later supports all of the encryption types. Adrian
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