Seeing Two SSIDs in the AP mode for RTL8852CU

[madhug89]

Right now I am trying to bring up this driver for USB based dongle RTL8852CU.

The module is working fine in the STA mode but when I am trying to configure this module as SoftAP by using hostapd, then I am observing the two SSID's with the same name with different MAC addresses.

Please find the hostapd configs are below -

logger_syslog=-1 logger_syslog_level=2 logger_stdout=0 logger_stdout_level=5 ap_isolate=1 ap_max_inactivity=30 disassoc_low_ack=1

interface=wlan0 driver=nl80211 channel=11

country_code=IN ieee80211d=1 ieee80211h=1

beacon_int=200 supported_rates=120 180 240 360 480 540 basic_rates=120 180 240 360 480 540

g is needed, n is built on top of it

hw_mode=g

this enables the 802.11n speeds and capabilities ... You will also need to enable WMM for full HT functionality.

ieee80211n=1

Low priority / AC_BK = background

tx_queue_data3_aifs=7 tx_queue_data3_cwmin=63 tx_queue_data3_cwmax=1023 tx_queue_data3_burst=0

Note: for IEEE 802.11b mode: cWmin=31 cWmax=1023 burst=0

#

Normal priority / AC_BE = best effort

tx_queue_data2_aifs=3 tx_queue_data2_cwmin=63 tx_queue_data2_cwmax=255 tx_queue_data2_burst=0

Note: for IEEE 802.11b mode: cWmin=31 cWmax=127 burst=0

#

High priority / AC_VI = video

tx_queue_data1_aifs=1 tx_queue_data1_cwmin=7 tx_queue_data1_cwmax=15 tx_queue_data1_burst=3.0

Note: for IEEE 802.11b mode: cWmin=15 cWmax=31 burst=6.0

#

Highest priority / AC_VO = voice

tx_queue_data0_aifs=1 tx_queue_data0_cwmin=3 tx_queue_data0_cwmax=7 tx_queue_data0_burst=1.5

Note: for IEEE 802.11b mode: cWmin=7 cWmax=15 burst=3.3

wmm_enabled=1 wme_enabled=1

Low priority / AC_BK = background

wmm_ac_bk_cwmin=6 wmm_ac_bk_cwmax=10 wmm_ac_bk_aifs=7 wmm_ac_bk_txop_limit=0 wmm_ac_bk_acm=0

Note: for IEEE 802.11b mode: cWmin=5 cWmax=10

#

Normal priority / AC_BE = best effort

wmm_ac_be_aifs=3 wmm_ac_be_cwmin=6 wmm_ac_be_cwmax=10 wmm_ac_be_txop_limit=0 wmm_ac_be_acm=0

Note: for IEEE 802.11b mode: cWmin=5 cWmax=7

#

High priority / AC_VI = video

wmm_ac_vi_aifs=2 wmm_ac_vi_cwmin=4 wmm_ac_vi_cwmax=5 wmm_ac_vi_txop_limit=94 wmm_ac_vi_acm=0

Note: for IEEE 802.11b mode: cWmin=4 cWmax=5 txop_limit=188

#

Highest priority / AC_VO = voice

wmm_ac_vo_aifs=2 wmm_ac_vo_cwmin=3 wmm_ac_vo_cwmax=4 wmm_ac_vo_txop_limit=47 wmm_ac_vo_acm=0

Note: for IEEE 802.11b mode: cWmin=3 cWmax=4 burst=102

Enable 300 mbit

ht_capab=[SHORT-GI-20][SHORT-GI-40][HT40-][TX-STBC][RX-STBC12]

Set up some sane defaults:

For packets over $val bytes, activate Request to Send (RTS) / Clear to Send (CTS)

(CTS)

Defaults to the frame size = 2347

rts_threshold=1200

For packets over $val bytes, fragment the packet into multiple frames. Half

the Ethernet MTU (usually =1500) would normally be a good starting point, but we have only

WiFi

Defaults to the frame size = 2346

fragm_threshold=1198

Short preamble, improves performance IFF all STAs support it

Defaults to $val=0 (off)

preamble=1

DTIM (delivery traffic information message) period (range 1..255):

number of beacons between DTIMs (1 = every beacon includes DTIM element)

Note that multicast traffic is only sent with each DTIM. We could improve

this by setting =1, but then STAs may never sleep again (drains power!)

Defaults to $val=2 (once every two beacons)

dtim_period=3

Wireless network management (WNM)

wnm_sleep_mode=1 bss_transition=1

macaddr_acl=0

accept_mac_file=/etc/hostapd.accept

deny_mac_file=/etc/hostapd.deny

ssid=Test-2G ctrl_interface=/var/run/hostapd wpa=2 wpa_passphrase=diegheim9Aiqu4oomoo2hish9ohKae wpa_key_mgmt=WPA-PSK-SHA256 WPA-PSK wpa_pairwise=CCMP

Note: I didn't enable the Concurrent mode in the driver

I need your valuable suggestions here

[lwfinger]

I have no experience with the vendor driver (the one you are using) in AP mode, and I provide this driver for the user's convenience, but my support is merely making sure that the driver will compile on everyone's kernel.

A references that may help: https://github.com/haraldrudell/AC1300-USB

[madhug89]

Thanks @lwfinger or your quick response !!

How did you get this realtek driver code?

[lwfinger]

I am not certain where I got that driver. Some models drivers came from one of my contacts at Realtek, while others came from vendors of the particular device.

[madhug89]

This issue is due to the manipulation of the original MAC address from our user space application.

So, closing this issue.