ATH driver doesn't associate with turbo.

[r***@psg.com]

thinkpad t40p current as of 6 jan (real current has fatal ata crashes)
ath0: <Atheros 5211> mem 0xc0210000-0xc021ffff irq 11 at device 2.0 on pci2
ath0: mac 4.2 phy 3.0 5ghz radio 1.7 2ghz radio 2.3
ath0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
ath0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
ath0: 802.11 address: 00:05:4e:41:ee:cd
nokia ap with orinoco gold card on chan 11
netgear he102 802.11a ap on chan 52 (5.26GHz)

all on same ssid

sometimes ath0 associates with one ap, sometimes the other, and it
will switch from 11a to 11b and not come back to 11a. e.g., right
now it says

# ifconfig ath0
ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 192.168.0.10 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:05:4e:41:ee:cd
media: IEEE 802.11 Wireless Ethernet autoselect (DS/11Mbps)
status: associated
ssid rgnet-home 1:rgnet-home
channel 11 authmode OPEN powersavemode OFF powersavesleep 100
wepmode OFF weptxkey 1
wepkey 1:104-bit

i suspect the ath driver, as i do not see similar issues in winxp.
but of course, when debugging, i am not sure of anything.

randy

[s***@errno.com]

[Please do not send me mail and cc a mailing list; I read most fbsd mailing
lists.]

Post by r***@psg.com
thinkpad t40p current as of 6 jan (real current has fatal ata crashes)
ath0: <Atheros 5211> mem 0xc0210000-0xc021ffff irq 11 at device 2.0 on
pci2 ath0: mac 4.2 phy 3.0 5ghz radio 1.7 2ghz radio 2.3
ath0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
ath0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
ath0: 802.11 address: 00:05:4e:41:ee:cd
nokia ap with orinoco gold card on chan 11
netgear he102 802.11a ap on chan 52 (5.26GHz)
all on same ssid
sometimes ath0 associates with one ap, sometimes the other, and it
will switch from 11a to 11b and not come back to 11a. e.g., right
now it says
# ifconfig ath0
ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 192.168.0.10 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:05:4e:41:ee:cd
media: IEEE 802.11 Wireless Ethernet autoselect (DS/11Mbps)
status: associated
ssid rgnet-home 1:rgnet-home
channel 11 authmode OPEN powersavemode OFF powersavesleep 100
wepmode OFF weptxkey 1
wepkey 1:104-bit
i suspect the ath driver, as i do not see similar issues in winxp.
but of course, when debugging, i am not sure of anything.

The 802.11 code scans all channels by default. It does not, for example,
stick to a band where it finds an AP. If you want to constrain it's search
to a particular band use something like

ifconfig ath0 mode 11a

If that doesn't answer what you were asking try adding a "?" somewhere :)

Sam

[s***@errno.com]

Turbo was done a modified bit because it actually can be used in both 11a
and 11g operation. I need to fix the 802.11 support to handle it better.
But that won't happen for a while unless someone else does it.

Gah, fractured typing: "Turbo was done with a modifier bit..."

Sam

[r***@psg.com]

it seems mode 11b is preferred. if i boot in the presense
of both kinds of APs, it seems to choose the 11b. i can
then say

ifconfig ath0 mode 11a

and it will happily switch to 11a

( and to <bleep> with turbo. real wireless users eat turbot
for lunch :-)

randy