Hi Stefan,
* Stefan Sperling wrote:
> This patch adds initial support for 40Mhz channels to the iwm driver.
>
> There are a few changes in net80211 to support this feature in RA and
> when parsing beacons. The work for net80211 is not yet complete but
> more can be done incrementally later. What is missing in particular
> is integration with ifconfig to display the use of a 40 MHz channel.
>
> And there is no way to force 40 MHz off at the client side yet.
> If the AP announces support for 40MHz we will always use it. Whether or
> not we'll need an override to handle some edge case remains to be seen.
>
> Please test this on any supported iwm(4) device. Thanks!
Running this diff on
iwm0 at pci2 dev 0 function 0 "Intel Dual Band Wireless-AC 8265" rev 0x78, msi
iwm0: hw rev 0x230, fw ver 36.ca7b901d.0, address 7c:2a:31:4d:1c:b9
and noticed no regression so far. I checked with
tcpdump -n -i iwm0 -v -y IEEE802_11_RADIO -s 4096 type mgt and subtype beacon
and I am on a 20MHz channel. According to my Fritzbox all 2.4Ghz
clients are on 20Mhz and the 11ac clients are on 80Mhz.
Cheers
Matthias
