I'm running 2 virtual interfaces: one in master mode with hostapd (802.11n in 40MHz) and the other one in managed mode. I can confirm that the AP is working on 40MHz: ap1 iw dev ap1-wlan1 info Interface ap1-wlan1 ifindex 221 wdev 0x6c00000001 addr 02:00:00:00:02:00 ssid new-ssid type AP wiphy 108 channel 3 (2422 MHz), width: 40 MHz, center1: 2432 MHz txpower 14.00 dBm as well as the client: sta1 iw dev sta1-wlan0 info Interface sta1-wlan0 ifindex 219 wdev 0x6a00000001 addr 00:00:00:00:00:02 ssid new-ssid type managed wiphy 106 channel 3 (2422 MHz), width: 40 MHz, center1: 2432 MHz txpower 14.00 dBm However, tx/rx bitrates of the client are not equivalent to the 40 MHz channels. Only the MCS index seems to be ok and I can change it via iw. sta1 iw dev sta1-wlan0 link Connected to 02:00:00:00:02:00 (on sta1-wlan0) SSID: new-ssid freq: 2422 RX: 1199869 bytes (12752 packets) TX: 4055 bytes (41 packets) signal: -14 dBm rx bitrate: 6.0 MBit/s tx bitrate: 39.0 MBit/s MCS 4 bss flags: short-slot-time dtim period: 2 beacon int: 100 For some reason I can see the correct tx/rx bitrate right at the beginning of the association (e.g. tx bitrate: 270.0 MBit/s MCS 15 40MHz), but right after that they change to 20 MHz. I have been trying to identify errors in mac80211_hwsim, but I was not successful. Can anybody help me? I did tests with/without wmediumd and the results are the same. -- Ramon Fontes
