On 30/12/2020 12:57, Wen Gong wrote:
On 2020-08-26 22:31, Shay Bar wrote:
Fix cfg80211_chandef_usable():
consider IEEE80211_VHT_CAP_EXT_NSS_BW when verifying 160/80+80 MHz.
When station with below 2 bit and connect to a 160MHZ 11ac mode AP, it
will try to use 160Mhz width after this patch,
but it does not support 160M in fact according spec of IEEE 802.11
.... .... .... .... .... .... .... 00.. = Supported Channel Width Set:
Neither 160MHz nor 80+80 supported (0x0)
01.. .... .... .... .... .... .... .... = Extended NSS BW Support: 0x1
refer to spec of IEEE 802.11.
Table 9-250—Setting of the Supported Channel Width Set subfield and
Extended NSS BW Support subfield at a STA transmitting the VHT
Capabilities Information field
value of the 160Mhz is 1/2 in the table for upper configure.
NOTE 2—1/2× or 3/4× Max VHT NSS support might end up being 0, indicating
no support.
You mean for AP's with 1 SS for example ?
