remote-android
Discuss ways to improve Virtual Wifi
Regarding the Virtual Wifi implementation, it's all based on the mac80211_hwsim kernel module.
By creating two virtual wifi devices, wlan0 and wlan1, and adding namespace divisions to differentiate between main and router, so you can simulate a wireless AP and a wifi receiver.
Here's the structure.
But this method has been abandoned at AOSP13
There is actually a better solution now, using the virt_wifi kernel module.
Masquerade a wired network card as a wireless network card
I tried it in Ubuntu 22.04, it does work.
sudo modprobe virt_wifi
sudo ip link set enp0s1 down
sudo ip link set enp0s1 name wifi_eth
sudo ip link set wifi_eth up
sudo ip link add link wifi_eth name wlan0 type virt_wifi
But I don't know the Android source code well enough to figure out how to implement it, although I've looked at the code for blissOS
https://github.com/BlissRoms-x86/device_generic_common/blob/6017b7d8071e148623efca41531fc1c5ff2a6092/init.sh#L49 https://github.com/BlissRoms-x86/device_generic_common/blob/6017b7d8071e148623efca41531fc1c5ff2a6092/init.x86.rc#L92
I tried to run these commands in redroid, and it does create wlan0, but this causes adb to be inaccessible, so there's no way to tell if the wifi is working properly
I think I also need to fix the wifi autoconnect to keep adb accessible, because by running these commands, the only network eth0 in the container is changed to wifi_eth, which in turn Android assumes there is no network connection.
Maybe try creating a docker network and then assigning it to the container and then try that way
Here is my redroid WiFi solution, which relies on the mac80211_hwsim kernel module. I have currently abandoned creating a router namespace, and the WiFi is running correctly. I think replacing it with the virt_wifi module should also work properly.
Here is my redroid WiFi solution, which relies on the mac80211_hwsim kernel module. I have currently abandoned creating a router namespace, and the WiFi is running correctly. I think replacing it with the virt_wifi module should also work properly.
good job!
I investigated the virt_wifi module and if need to change the name of the virtual wifi hotspot, need to make changes to the source code, which is a bit of a pain
https://github.com/torvalds/linux/blob/master/drivers/net/wireless/virtual/virt_wifi.c#L139
Here is my redroid WiFi solution, which relies on the mac80211_hwsim kernel module. I have currently abandoned creating a router namespace, and the WiFi is running correctly. I think replacing it with the virt_wifi module should also work properly.
I'm trying to replace the mac80211_hwsim kernel module with virt_wifi kernel module.
rmmod mac80211_hwsim
modprobe virt_wifi
Then I modified init.redroid.net.sh
diff --git a/network/init.redroid.net.sh b/network/init.redroid.net.sh
index 37e273d..d39882f 100755
--- a/network/init.redroid.net.sh
+++ b/network/init.redroid.net.sh
@@ -95,7 +54,9 @@ if [ "$redroid_wifi" -eq "1" -o "$redroid_radio" -eq "1" ]; then
/system/bin/ip route add default via ${eth0_gw} dev veth0
if [ "$redroid_wifi" -eq "1" ]; then
- init_wlan
+ #init_wlan
+ /system/bin/ip link add link veth0 name wlan0 type virt_wifi
+ /system/bin/ip link set wlan0 up
fi
After that I started the redroid container and indeed I could access the android interface via scrcpy. But when I try to start the wifi it doesn't start successfully.
This is the logcat log.
12-21 10:26:59.358 382 481 I WifiVendorHal: Vendor Hal started successfully
12-21 10:26:59.359 140 140 W [email protected]: No active wlan interfaces in use! Using default
12-21 10:26:59.359 140 140 E [email protected]: Unknown iface name: wlan0
12-21 10:26:59.359 140 140 E [email protected]: Unknown iface name: wlan0
12-21 10:26:59.360 140 140 I [email protected]: Adding interface handle for wlan0
12-21 10:26:59.360 140 140 W [email protected]: No active wlan interfaces in use! Using default
12-21 10:26:59.360 140 140 E [email protected]: Failed to register radio mode change callback
12-21 10:26:59.360 140 140 W [email protected]: No active wlan interfaces in use! Using default
12-21 10:26:59.360 382 410 I EthernetTracker: interfaceLinkStateChanged, iface: wlan0, up: false
12-21 10:26:59.360 140 140 I [email protected]: Configured chip in mode 0
12-21 10:26:59.360 140 140 W [email protected]: No active wlan interfaces in use! Using default
12-21 10:26:59.360 382 481 D HalDevMgr: updateRttController: no one is interested in RTT controllers
12-21 10:26:59.360 140 140 I [email protected]: Adding interface handle for wlan0
12-21 10:26:59.360 140 140 E [email protected]: Failed to set DFS flag; DFS channels may be unavailable.
12-21 10:26:59.361 382 481 D WifiNl80211Manager: Setting up interface for client mode: wlan0
12-21 10:26:59.361 205 205 I wificond: No wiphy is found
12-21 10:26:59.361 205 205 E wificond: Failed to get wiphy index
12-21 10:26:59.361 382 481 E WifiNl80211Manager: Could not get IClientInterface instance from wificond
12-21 10:26:59.361 382 481 E WifiNative: Failed to setup iface in wificond=wlan0
12-21 10:26:59.362 140 140 I [email protected]: Adding interface handle for wlan0
12-21 10:26:59.362 140 140 W [email protected]: No active wlan interfaces in use! Using default
12-21 10:26:59.362 382 481 E WifiNative: Failed to unregister network observer on Iface:{Name=wlan0,Id=13,Type=STA_SCAN}
12-21 10:26:59.362 382 481 E WifiNl80211Manager: No valid wificond client interface handler for iface=wlan0
12-21 10:26:59.362 382 481 E WifiNative: Failed to teardown iface in wificond on Iface:{Name=wlan0,Id=13,Type=STA_SCAN}
12-21 10:26:59.362 382 481 D WifiNl80211Manager: tearing down interfaces in wificond
12-21 10:26:59.362 140 140 I [email protected]: Legacy HAL stop complete callback received
12-21 10:26:59.362 382 410 I EthernetTracker: interfaceLinkStateChanged, iface: wlan0, up: false
12-21 10:26:59.362 140 140 I [email protected]: Wifi HAL stopped
12-21 10:26:59.363 382 481 I WifiVendorHal: Vendor Hal stopped
12-21 10:26:59.363 382 481 I WifiNative: Successfully torn down Iface:{Name=wlan0,Id=13,Type=STA_SCAN}
12-21 10:26:59.363 382 481 I WifiNative: Successfully initiated teardown for iface=wlan0
12-21 10:26:59.363 382 481 E WifiClientModeManager[unknown]: Failed to create ClientInterface. Sit in Idle
12-21 10:26:59.363 382 481 E WifiActiveModeWarden: ClientModeManager start failed!ConcreteClientModeManager{id=2047209 iface=null role=null}
12-21 10:26:59.363 382 481 D WifiScanRequestProxy: Sending scan available broadcast: false
12-21 10:26:59.363 382 485 I WifiScanningService: Received a request to disable scanning, UID = 1000
12-21 10:26:59.363 382 481 I WifiScanRequestProxy: Scanning is disabled
12-21 10:26:59.363 382 485 I WifiScanningService: wifi driver unloaded
12-21 10:26:59.363 382 481 D WifiController: STA disabled, return to DisabledState.
12-21 10:26:59.363 382 481 D WifiController: EnabledState.exit()
12-21 10:26:59.363 382 481 D WifiController: DisabledState.enter()
Then I checked the NIC device information in the shell
:/ # ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: veth0@if7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether bc:24:11:f6:b9:e5 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet 192.168.1.100/24 brd 192.168.1.255 scope global veth0
valid_lft forever preferred_lft forever
inet6 fe80::be24:11ff:fef6:b9e5/64 scope link tentative
valid_lft forever preferred_lft forever
3: wlan0@veth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether bc:24:11:f6:b9:e5 brd ff:ff:ff:ff:ff:ff
inet6 fe80::be24:11ff:fef6:b9e5/64 scope link tentative
valid_lft forever preferred_lft forever
:/ # ifconfig -a
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope: Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:80 TX bytes:80
veth0 Link encap:Ethernet HWaddr bc:24:11:f6:b9:e5
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::be24:11ff:fef6:b9e5/64 Scope: Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:70 errors:0 dropped:3 overruns:0 frame:0
TX packets:41 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:18123 TX bytes:7035
wlan0 Link encap:Ethernet HWaddr bc:24:11:f6:b9:e5
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 TX bytes:0
Tried to manually start the wlan0 device, but it didn't work
:/ # /system/bin/ip link set wlan0 up
:/ # /system/bin/ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: veth0@if7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
link/ether bc:24:11:f6:b9:e5 brd ff:ff:ff:ff:ff:ff link-netnsid 0
3: wlan0@veth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
link/ether bc:24:11:f6:b9:e5 brd ff:ff:ff:ff:ff:ff
:/ # ifconfig wlan0 up
:/ # /system/bin/ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: veth0@if7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
link/ether bc:24:11:f6:b9:e5 brd ff:ff:ff:ff:ff:ff link-netnsid 0
3: wlan0@veth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
link/ether bc:24:11:f6:b9:e5 brd ff:ff:ff:ff:ff:ff
Maybe I'm missing something?
Hi @lurenJBD, I'm able to enable wifi in android 14, I saw logic from android 13 looks like android 14, and no wifi found, I think hostapd nohidl in android 13 have been removed, I also saw there simulate_hostapd.conf has now driver to virt_wifi, is worked for you ?
Hi @lurenJBD, I'm able to enable wifi in android 14, I saw logic from android 13 looks like android 14, and no wifi found, I think hostapd nohidl in android 13 have been removed, I also saw there simulate_hostapd.conf has now driver to virt_wifi, is worked for you ?
I didn't manage to get the wifi to work properly. (Using virt_wifi module)
Can you share how you got the wifi to work with virt_wifi on android 14?
Here is my redroid WiFi solution, which relies on the mac80211_hwsim kernel module. I have currently abandoned creating a router namespace, and the WiFi is running correctly. I think replacing it with the virt_wifi module should also work properly.
I'm wondering how I can use your script in Android 13? It seems to be missing some vendor binaries for modifying the network and creating Wi-Fi hotspots.
