Re: AR9285 not see n-channels

From: Gary Palmer <gpalmer_at_freebsd.org>
Date: Sat, 15 Dec 2012 11:32:10 -0500
On Sat, Dec 15, 2012 at 11:03:42AM -0500, Fbsd8 wrote:
> 
> > Adrian
> > 
> > On 12 December 2012 17:39, Andrey Fesenko <f0andrey_at_gmail.com> wrote:
> >> On Thu, Dec 13, 2012 at 5:33 AM, Adrian Chadd <adrian.chadd_at_gmail.com> wrote:
> >>> Hi,
> >>>
> >>> The AR9285 is a 2GHz only NIC.
> >>>
> >>> The channel list shows 11b, 11bg, HT20 and HT40 channels.
> >>>
> >>> It all looks right, why don't you think it is?
> >>>
> >>>
> >>> Adrian
> >>>
> >>>
> >>> On 12 December 2012 17:32, Andrey Fesenko <f0andrey_at_gmail.com> wrote:
> >>>> On Thu, Dec 13, 2012 at 4:55 AM, Adrian Chadd <adrian.chadd_at_gmail.com> wrote:
> >>>>> .. yup, you're doing 11n! Welcome!
> >>>>>
> >>>>>
> >>>>>
> >>>>> Adrian
> >>>>>
> >>>>> On 12 December 2012 16:54, Andrey Fesenko <f0andrey_at_gmail.com> wrote:
> >>>>>> On Thu, Dec 13, 2012 at 4:44 AM, Adrian Chadd <adrian.chadd_at_gmail.com> wrote:
> >>>>>>> Yup. It's doing 11n rates.
> >>>>>>>
> >>>>>>> Compile and run athstats, it'll tell you how many aggregate frames are being
> >>>>>>> sent and received.
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> Adrian
> >>>>>>>
> >>>>>>> Sent from my Palm Pre on AT&T
> >>>>>>>
> >>>>>>> ________________________________
> >>>>>>> On Dec 12, 2012 4:39 PM, Andrey Fesenko <f0andrey_at_gmail.com> wrote:
> >>>>>>>
> >>>>>>> On Thu, Dec 13, 2012 at 4:32 AM, Adrian Chadd <adrian_at_freebsd.org> wrote:
> >>>>>>>> What's 'ifconfig wlan0' and 'ifconfig wlan0 list sta' look like?
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> adrian
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> On 12 December 2012 15:51, Andrey Fesenko <f0andrey_at_gmail.com> wrote:
> >>>>>>>>> I have
> >>>>>>>>> # uname -a
> >>>>>>>>> FreeBSD beastie.mydomain.local 10.0-CURRENT FreeBSD 10.0-CURRENT #1
> >>>>>>>>> r243259: Mon Nov 19 09:28:08 MSK 2012
> >>>>>>>>> root_at_beastie.mydomain.local:/usr/obj/usr/src/sys/W_BOOK amd64
> >>>>>>>>> # grep ATH /usr/src/sys/amd64/conf/W_BOOK
> >>>>>>>>> options ATH_ENABLE_11N
> >>>>>>>>> options ATH_DEBUG
> >>>>>>>>> options ATH_DIAGAPI
> >>>>>>>>>
> >>>>>>>>> pciconf
> >>>>>>>>> ath0_at_pci0:5:0:0: class=0x028000 card=0xe016105b chip=0x002b168c
> >>>>>>>>> rev=0x01 hdr=0x00
> >>>>>>>>> vendor = 'Atheros Communications Inc.'
> >>>>>>>>> device = 'AR9285 Wireless Network Adapter (PCI-Express)'
> >>>>>>>>> class = network
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>> # ifconfig -v wlan0 list channel
> >>>>>>>>> Channel 1 : 2412 MHz 11b Channel 7 : 2442 MHz 11g ht/20
> >>>>>>>>> Channel 1 : 2412 MHz 11g Channel 8 : 2447 MHz 11b
> >>>>>>>>> Channel 1 : 2412 MHz 11g ht/20 Channel 8 : 2447 MHz 11g
> >>>>>>>>> Channel 2 : 2417 MHz 11b Channel 8 : 2447 MHz 11g ht/20
> >>>>>>>>> Channel 2 : 2417 MHz 11g Channel 9 : 2452 MHz 11b
> >>>>>>>>> ....
> >>>>>>>>>
> >>>>>>>>> wi-fi router have and enable n-mode (linksys e4200)
> >>>>>>>>> How to turn on or activate n-mode?
> >>>>>>> # ifconfig wlan0 list sta
> >>>>>>> ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG
> >>>>>>> 58:6d:8f:fa:d9:50 5 12 72M 27.5 0 2079 31872 EP AQEHTRS
> >>>>>>> RSN HTCAP WME WPS
> >>>>>>> # ifconfig wlan0
> >>>>>>> wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> >>>>>>> ether 4c:0f:6e:4b:4e:f5
> >>>>>>> inet 192.168.1.41 netmask 0xffffff00 broadcast 192.168.1.255
> >>>>>>> nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> >>>>>>> media: IEEE 802.11 Wireless Ethernet MCS mode 11ng
> >>>>>>> status: associated
> >>>>>>> ssid hometest channel 12 (2467 MHz 11g ht/20) bssid 58:6d:8f:fa:d9:50
> >>>>>>> regdomain 101 indoor ecm authmode WPA2/802.11i privacy ON
> >>>>>>> deftxkey UNDEF AES-CCM 2:128-bit AES-CCM 3:128-bit txpower 20 bmiss 7
> >>>>>>> scanvalid 60 protmode CTS ampdulimit 64k ampdudensity 4 shortgi wme
> >>>>>>> burst roaming MANUAL
> >>>>>> # ./athstats
> >>>>>> 526213       data frames received
> >>>>>> 10205        data frames transmit
> >>>>>> 79           short on-chip tx retries
> >>>>>> 103          long on-chip tx retries
> >>>>>> 16           tx failed 'cuz too many retries
> >>>>>> 220          mib overflow interrupts
> >>>>>> MCS7         current transmit rate
> >>>>>> 1            watchdog timeouts
> >>>>>> 42           beacon miss interrupts
> >>>>>> 23154        rx failed 'cuz of bad CRC
> >>>>>> 56           rx failed 'cuz of PHY err
> >>>>>>     56           illegal service
> >>>>>> 1638         periodic calibrations
> >>>>>> -0/+0        TDMA slot adjust (usecs, smoothed)
> >>>>>> 56           rssi of last ack
> >>>>>> 50           avg recv rssi
> >>>>>> -96          rx noise floor
> >>>>>> 13           phantom beacon misses
> >>>>>> 6569         tx frames through raw api
> >>>>>> 1460         A-MPDU sub-frames received
> >>>>>> 183          Half-GI frames received
> >>>>>> 183          40MHz frames received
> >>>>>> 2397         CRC errors for non-last A-MPDU subframes
> >>>>>> 3151         Frames transmitted with HT Protection
> >>>>>> 25           A-MPDU sub-frame TX attempt success
> >>>>>> 2            first step level
> >>>>>> 1            OFDM weak signal detect
> >>>>>> 268          listen time
> >>>>>> 190          ANI increased spur immunity
> >>>>>> 174          ANI decrease spur immunity
> >>>>>> 2            ANI enabled OFDM weak signal detect
> >>>>>> 3517         ANI disabled OFDM weak signal detect
> >>>>>> 3515         ANI disabled CCK weak signal threshold
> >>>>>> 4            ANI increased first step level
> >>>>>> 2            ANI decreased first step level
> >>>>>> 154772       cumulative OFDM phy error count
> >>>>>> 528256       cumulative CCK phy error count
> >>>>>> 851          ANI forced listen time to zero
> >>>>>> 26           missing ACK's
> >>>>>> 78           RTS without CTS
> >>>>>> 3135         successful RTS
> >>>>>> 65747        bad FCS
> >>>>>> 473007       beacons received
> >>>>>> 53           average rssi (beacons only)
> >>>>>> 35           average rssi (all rx'd frames)
> >>>>>> 48           average rssi (ACKs only)
> >>>>>> Antenna profile:
> >>>>>> [0] tx    10173 rx        4
> >>>>>> [1] tx        0 rx   526209
> >>>>>>
> >>>>>>
> >>>>>> # ./athaggrstats
> >>>>>> 17       single frames scheduled
> >>>>>> 9        aggregate frames scheduled
> >>>>>> 1217     single frames scheduled due to low HWQ depth
> >>>>>>
> >>>>>> Aggregate size profile:
> >>>>>>
> >>>>>>  0:            0  1:            0  2:            6  3:            2
> >>>>>>  4:            0  5:            0  6:            0  7:            1
> >>>>>>  8:            0  9:            0 10:            0 11:            0
> >>>> why # ifconfig -v wlan0 list channel
> >>>> show only b and g channels? and only 13? or this restriction AR9285
> >>>>
> >>>> though
> >>>> # iperf -i 10 -t 20 -c 192.168.1.26 -w 1024K -l 1024K
> >>>> ------------------------------------------------------------
> >>>> Client connecting to 192.168.1.26, TCP port 5001
> >>>> TCP window size: 1.00 MByte (WARNING: requested 1.00 MByte)
> >>>> ------------------------------------------------------------
> >>>> [  3] local 192.168.1.41 port 22263 connected with 192.168.1.26 port 5001
> >>>> [ ID] Interval       Transfer     Bandwidth
> >>>> [  3]  0.0-10.0 sec  54.0 MBytes  45.3 Mbits/sec
> >> Thanks
> >>
> >> I was confused that there is no mention n-mode in the output channel list
> > 
> Adrian Chadd wrote:
>  > Right, that's what "HT" is for.
>  >
>  >
> 
> Well it would be much clearer to understand by changing the output of 
> the the channel list to show 11b, 11bg, 11n20 and 11n40 channels instead 
> of HT20 and HT40, so people would readily know n-mode was active. HT has 
> no meaning to the general user.

Did you check 'man ifconfig'?  The meaning of HT is clearly documented.

I agree that the output could be made clearer, however a very quick 
glance at the man page showed what HT meant in this context.

Gary
Received on Sat Dec 15 2012 - 15:32:23 UTC

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