Re: AP mode support for TP-Link TL-WN722N V2 (Realtek RTL8188EU, USB ID 2357:010c)

On 5/5/20 11:08 AM, Petr Vorel wrote:
> Hi,
> 
> does hostapd support AP mode for TP-Link TL-WN722N V2 (Realtek RTL8188EU, USB ID
> 2357:010c)?
> 
> When using rtl8188eu kernel module from staging [1] with
> CONFIG_88EU_AP_MODE=y, AP mode does not work for neither nl80211 nor hostap driver.
> 
> Is it just configuration issue or it's just not supported?
> 
> # hostapd -dd /etc/hostapd/hostapd.conf
> random: Trying to read entropy from /dev/random
> Configuration file: /etc/hostapd/hostapd.conf
> nl80211: Driver does not support authentication/association or connect commands
> nl80211: deinit ifname=wlan0 disabled_11b_rates=0
> nl80211: Remove monitor interface: refcount=0
> netlink: Operstate: ifindex=4 linkmode=0 (kernel-control), operstate=6 (IF_OPER_UP)
> nl80211: Set mode ifindex 4 iftype 2 (STATION)
> nl80211: Failed to set interface 4 to mode 2: -19 (No such device)
> nl80211 driver initialization failed.
> hostapd_interface_deinit_free(0x76c0d4f0)
> hostapd_interface_deinit_free: num_bss=1 conf->num_bss=1
> hostapd_interface_deinit(0x76c0d4f0)
> wlan0: interface state UNINITIALIZED->DISABLED
> hostapd_bss_deinit: deinit bss wlan0
> wlan0: AP-DISABLED
> hostapd_cleanup(hapd=0x76f187c0 (wlan0))
> wlan0: CTRL-EVENT-TERMINATING
> hostapd_free_hapd_data: Interface wlan0 wasn't started
> hostapd_interface_deinit_free: driver=0 drv_priv=0 -> hapd_deinit
> hostapd_interface_free(0x76c0d4f0)
> hostapd_interface_free: free hapd 0x76f187c0
> hostapd_cleanup_iface(0x76c0d4f0)
> hostapd_cleanup_iface_partial(0x76c0d4f0)
> hostapd_cleanup_iface: free iface=0x76c0d4f0
> 
> $ cat /etc/hostapd/hostapd.conf
> interface=wlan0
> driver=nl80211
> ssid=foo
> channel=6
> hw_mode=g
> macaddr_acl=0
> auth_algs=1
> ignore_broadcast_ssid=0
> wpa=2
> wpa_passphrase=12345678
> wpa_key_mgmt=WPA-PSK
> wpa_pairwise=TKIP
> rsn_pairwise=CCMP
> 
> There are number of out-of-tree kernel modules: 8188eu, the very old official
> one from TP-Link [2] for v4.3 (2015). There are other forks of this official
> [2], [3]. [2] mentions Monitor Mode, which suggests there could be AP mode
> working.

Only very old hostapd is supported by the staging driver, and not very well.

Your best chance is to use the v5.2.2.4 branch pf 
http://github.com/lwfinger/rtl8188eu.git.

This driver uses cfg80211/nl80211 commands and supports the latest hostapd.

Larry