RTL8188CE/RTL8188EE/RTL8192CE/RTL8723AE PCIe IEEE 802.11b/g/n wireless
rtwn* at pci? port ?
rtwn driver supports PCIe wireless
network devices based on the Realtek RTL8188CE, RTL8188EE, RTL8192CE and
The RTL8188CE, RTL8188EE and RTL8723AE are highly integrated 802.11n adapters that combine a MAC, a 1T1R capable baseband and an RF in a single chip. The RTL8723AE also includes a Bluetooth 2.1/3.0/4.0 controller.
The RTL8192CE is a highly integrated multiple-in, multiple-out (MIMO) 802.11n adapter that combines a MAC, a 2T2R capable baseband and an RF in a single chip.
These devices operate in the 2GHz spectrum only.
These are the modes the
rtwn driver can
- BSS mode
- Also known as infrastructure mode, this is used when associating with an access point, through which all traffic passes. This mode is the default.
- monitor mode
- In this mode the driver is able to receive packets without associating with an access point. This disables the internal receive filter and enables the card to capture packets from networks which it wouldn't normally have access to, or to scan for access points.
rtwn driver can be configured to use
Wired Equivalent Privacy (WEP) or Wi-Fi Protected Access (WPA1 and WPA2).
WPA2 is the current encryption standard for wireless networks. It is
strongly recommended that neither WEP nor WPA1 are used as the sole
mechanism to secure wireless communication, due to serious weaknesses. WPA1
is disabled by default and may be enabled using the option
wpa1,wpa2". For standard WPA networks which use
pre-shared keys (PSK), keys are configured using the
wpakey" option. WPA-Enterprise networks
require use of the wpa_supplicant package.
rtwn driver can be configured at
runtime with ifconfig(8) or on boot with
The adapter needs firmware files to run, which are loaded on demand by the driver when the device is attached:
The following example scans for available networks:
# ifconfig rtwn0 scan
The following hostname.if(5) example configures rtwn0 to join network “mynwid”, using WPA key “mywpakey”, obtaining an IP address using DHCP:
join mynwid wpakey mywpakey inet autoconf
- rtwn0: could not read firmware ...
- For some reason, the driver was unable to read the microcode file from the filesystem. The file might be missing or corrupted.
- rtwn0: device timeout
- A frame dispatched to the hardware for transmission did not complete in time. The driver will reset the hardware. This should not happen.
arp(4), ifmedia(4), intro(4), netintro(4), pci(4), hostname.if(5), ifconfig(8)
rtwn driver first appeared in
rtwn driver was written by
It was based on the urtwn(4) driver written by Damien Bergamini
rtwn driver does not support any of
the 802.11n capabilities offered by the adapters. Additional work is
required in ieee80211(9) before those features can be supported.
This driver does not support powersave mode.