USB tethering not working

Reynald

I tried to use USB tethering on my OP6: not working at all (interface stays in MTP mode).

I found that RNDIS mode was just not implemented in /usr/share/usbinit/setupusb... snif...

So I modified (with success) /usr/share/usbinit/setupusb:

#!/bin/sh
CONFIG_FS=/sys/kernel/config
CONFIG_DIR=$CONFIG_FS/usb_gadget/
GADGET_DIR=$CONFIG_DIR/g1
CONFIG_NAME="c.1"

SERIALNUMBER=`getprop ro.serialno`             # e.g. "0123456789ABCDEF"
MANUFACTURER=`getprop ro.product.vendor.manufacturer` # e.g. "Volla"
PRODUCT=`getprop ro.product.vendor.model`             # e.g. "Phone"
CONTROLLER=`getprop sys.usb.controller`        # e.g. "musb-hdrc"

write() {
	test -w "$1" || return
	printf "$2" > "$1"
}

symlink() {
	ln -s "$1" "$2"
}

reset_usb() {
	rm -f $GADGET_DIR/configs/$CONFIG_NAME/mtp.gs0
	rm -f $GADGET_DIR/configs/$CONFIG_NAME/ffs.adb
	rm -f $GADGET_DIR/configs/$CONFIG_NAME/rndis.usb0
}

setup_rndis() {
	reset_usb
	write $GADGET_DIR/configs/$CONFIG_NAME/strings/0x409/configuration "rndis"
	symlink $GADGET_DIR/functions/rndis.usb0 $GADGET_DIR/configs/$CONFIG_NAME/
	write $GADGET_DIR/UDC $CONTROLLER
	setprop sys.usb.state rndis
}

setup_mtp() {
	reset_usb
	write $GADGET_DIR/functions/mtp.gs0/os_desc/interface.MTP/compatible_id "mtp"
	write $GADGET_DIR/configs/$CONFIG_NAME/strings/0x409/configuration "mtp"
	symlink $GADGET_DIR/functions/mtp.gs0 $GADGET_DIR/configs/$CONFIG_NAME/
	write $GADGET_DIR/UDC $CONTROLLER
	setprop sys.usb.state mtp
}

setup_mtp_adb() {
	reset_usb
	write $GADGET_DIR/functions/mtp.gs0/os_desc/interface.MTP/compatible_id "mtp_adb"
	write $GADGET_DIR/configs/$CONFIG_NAME/strings/0x409/configuration "mtp_adb"
	symlink $GADGET_DIR/functions/mtp.gs0 $GADGET_DIR/configs/$CONFIG_NAME/
	symlink $GADGET_DIR/functions/ffs.adb $GADGET_DIR/configs/$CONFIG_NAME/
	start android-tools-adbd
	sleep 2
	write $GADGET_DIR/UDC $CONTROLLER
	setprop sys.usb.state mtp,adb
}

setup_boot() {
	if [ -e $GADGET_DIR/functions/mtp.gs0 ]; then
		echo "Boot setup done"
		return
	fi

	if ! mount | grep -q "$CONFIG_FS"; then
		mount -t configfs none $CONFIG_FS
		mkdir -p $GADGET_DIR/strings/0x409
		mkdir -p $GADGET_DIR/functions/rndis.usb0
		mkdir -p $GADGET_DIR/configs/$CONFIG_NAME/strings/0x409
	fi

	write $GADGET_DIR/idVendor 0x18D1
	write $GADGET_DIR/bcdDevice 0x0223
	write $GADGET_DIR/bcdUSB 0x0200
	write $GADGET_DIR/os_desc/use 1
	write $GADGET_DIR/os_desc/b_vendor_code 0x1
	write $GADGET_DIR/os_desc/qw_sign "MSFT100"
	write $GADGET_DIR/strings/0x409/serialnumber $SERIALNUMBER
	write $GADGET_DIR/strings/0x409/manufacturer $MANUFACTURER
	write $GADGET_DIR/strings/0x409/product $PRODUCT
	mkdir -p $GADGET_DIR/functions/mtp.gs0
	mkdir -p $GADGET_DIR/functions/ffs.adb
	symlink $GADGET_DIR/configs/$CONFIG_NAME $GADGET_DIR/os_desc/$CONFIG_NAME

	mkdir -p /dev/usb-ffs/adb
	mount -t functionfs -o uid=32011,gid=32011 adb /dev/usb-ffs/adb
	chown root:plugdev /dev/usb-ffs
	chmod 775 /dev/usb-ffs
	chown root:plugdev /dev/usb-ffs/adb
	chmod 775 /dev/usb-ffs/adb

	chown root:plugdev /dev/mtp_usb
	chmod 660 /dev/mtp_usb
}

setup_boot

if [ "$1" = "rndis" ]; then
	setup_rndis
elif [ "$1" = "mtp" ]; then
	setup_mtp
elif [ "$1" = "mtp_adb" ]; then
	setup_mtp_adb
else
	echo "No configuration selected."
fi

exit 0

and /usr/bin/tethering :

#! /bin/sh

NMCONF=/etc/NetworkManager/system-connections/tethering

init_interface(){
bash /usr/share/usbinit/setupusb reset
bash /usr/share/usbinit/setupusb rndis
ifconfig rndis0 up
}

enable(){
    MAC="$(ip -o link show rndis0 |sed -e 's/^.*ether //'|cut -d' ' -f1)"
    UUID=ca16a21d-7d8b-4b49-926e-"$(echo $MAC|sed -e 's/://g')"
    STAMP=$(date +%s)

    if [ ! -e $NMCONF ];then
        cat << EOF >$NMCONF
[802-3-ethernet]
duplex=full
mac-address=$MAC

[connection]
id=tethering
uuid=$UUID
type=802-3-ethernet
timestamp=$STAMP

[ipv6]
method=auto

[ipv4]
method=shared
may-fail=false
EOF
    else
        sed -i s/^mac-address=.*/mac-address=${MAC}/ $NMCONF
        sed -i s/^uuid=.*/uuid=${UUID}/ $NMCONF
        sed -i s/^timestamp=.*/timestamp=${STAMP}/ $NMCONF
    fi

    chmod 0600 $NMCONF
    sleep 2
    nmcli c reload
    nmcli c up id tethering
}

disable(){
    nmcli c down id tethering || true
    rm $NMCONF || true
    initctl start mtp-state
}

case $1 in
    enable)
        init_interface
        enable
        ;;
    disable)
        disable
        ;;
    *)
        echo "need an argument (enable|disable)"
        exit 0
        ;;
esac

RNDIS is now fully usable with /usr/bin/tethering enable/disable and with UT Tweak Tool.
Enjoy!

SevralT

Ubuntu Touch hasn't USB Tethering. Yes, there is RNDIS option in UT Tweak Tool but it used for USB debugging when ADB was unavailable.