On 01/02/2018 07:25 AM, Fejes József wrote:
On Tue, Jan 2, 2018 at 4:14 PM, Ben Greear <greearb@xxxxxxxxxxxxxxx> wrote:
On 01/02/2018 04:28 AM, Fejes József wrote:
Hi,
This question was asked a couple of years ago (eg. here
http://lists.infradead.org/pipermail/hostap/2012-January/025117.html)
with a negative answer.
However, it seems like things have changed in Linux at least. Recent
wifi cards support multiple virtual interfaces with multiple channels.
Eg. with the command: iw dev wlan0 interface add wlan1 type __ap .
Thus even if I have one card with one chip, I can have multiple wlan
devices and the card will handle communication with different
bands/channels accordingly.
Which cards do you think support this option?
For example iw reports this for a BCM4366 (it also reports both 2.4GHz
and 5GHz bands in the channel list):
valid interface combinations:
* #{ managed } <= 1, #{ P2P-device } <= 1, #{ P2P-client, P2P-GO } <= 1,
total <= 3, #channels <= 1
* #{ managed } <= 1, #{ AP } <= 1, #{ P2P-client } <= 1, #{ P2P-device } <= 1,
total <= 4, #channels <= 1
* #{ AP } <= 4,
total <= 4, #channels <= 1, STA/AP BI must match
Last combination is the key, you can create 4 AP-type interfaces at
the same time. Although it says channels<=1 which is weird for
dual-band but whatever. I've seen pastes where channels was 2.
I guess if you could find something that would give you multiple concurrent channels
support, then it might work. But, in that case, it would seem simpler all
around to just have it act as two radios.
Thanks,
Ben
Thanks,
Ben
My question is, does hostap work with such virtually created
interfaces for the same chip?
It would be even better if hostap could create such virtual interfaces
on its own. Is it supported or is it going to be supported?
Cheers,
Jozsef
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--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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