diff options
Diffstat (limited to 'meta-google/recipes-google/networking/google-usb-network/usb_network.sh')
| -rwxr-xr-x | meta-google/recipes-google/networking/google-usb-network/usb_network.sh | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/meta-google/recipes-google/networking/google-usb-network/usb_network.sh b/meta-google/recipes-google/networking/google-usb-network/usb_network.sh new file mode 100755 index 000000000..08f9ad23b --- /dev/null +++ b/meta-google/recipes-google/networking/google-usb-network/usb_network.sh @@ -0,0 +1,165 @@ +#!/bin/bash +# Copyright 2021 Google LLC +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + + +# List of options the script accepts. Trailing column means that the option +# requires an argument. +ARGUMENT_LIST=( + "help" + "product-id:" + "product-name:" + "host-mac:" + "bind-device:" + "dev-mac:" + "gadget-dir-name:" + "iface-name:" +) + +print_usage() { + cat <<HELP +$0 [OPTIONS] [stop|start] + Create USB Gadget Configuration + --product-id USB Product Id for the gadget. + --product-name Product name string (en) for the gadget. + --host-mac MAC address of the host part of the connection. Optional. + --dev-mac MAC address of the device (gadget) part of the connection. Optional. + --bind-device Name of the device to bind, as listed in /sys/class/udc/ + --gadget-dir-name Optional base name for gadget directory. Default: "g1" + --iface-name Optional name of the network interface. Default: "usb0" + --help Print this help and exit. +HELP +} + +gadget_start() { + local gadget_dir="${CONFIGFS_HOME}/usb_gadget/${GADGET_DIR_NAME}" + mkdir -p "${gadget_dir}" + echo ${ID_VENDOR} > "${gadget_dir}/idVendor" + echo ${ID_PRODUCT} > "${gadget_dir}/idProduct" + + local str_en_dir="${gadget_dir}/strings/0x409" + mkdir -p "${str_en_dir}" + echo ${STR_EN_VENDOR} > "${str_en_dir}/manufacturer" + echo ${STR_EN_PRODUCT} > "${str_en_dir}/product" + + local config_dir="${gadget_dir}/configs/c.1" + mkdir -p "${config_dir}" + echo 100 > "${config_dir}/MaxPower" + mkdir -p "${config_dir}/strings/0x409" + echo "ECM" > "${config_dir}/strings/0x409/configuration" + + local func_dir="${gadget_dir}/functions/ecm.${IFACE_NAME}" + mkdir -p "${func_dir}" + + if [[ -n $HOST_MAC_ADDR ]]; then + echo ${HOST_MAC_ADDR} > ${func_dir}/host_addr + fi + + if [[ -n $DEV_MAC_ADDR ]]; then + echo ${DEV_MAC_ADDR} > ${func_dir}/dev_addr + fi + + ln -s "${func_dir}" "${config_dir}" + + echo "${BIND_DEVICE}" > ${gadget_dir}/UDC +} + +gadget_stop() { + local gadget_dir="${CONFIGFS_HOME}/usb_gadget/${GADGET_DIR_NAME}" + rm -f ${gadget_dir}/configs/c.1/ecm.${IFACE_NAME} + rm -rf ${gadget_dir}/configs/c.1/strings/0x409 + rm -rf ${gadget_dir}/configs/c.1 + rm -rf ${gadget_dir}/strings/0x409 + rm -rf ${gadget_dir}/functions/ecm.${IFACE_NAME} + rm -rf ${gadget_dir} +} + +opts=$(getopt \ + --longoptions "$(printf "%s," "${ARGUMENT_LIST[@]}")" \ + --name "$(basename "$0")" \ + --options "" \ + -- "$@" +) + +eval set --$opts + +CONFIGFS_HOME=${CONFIGFS_HOME:-/sys/kernel/config} +ID_VENDOR="0x18d1" # Google +ID_PRODUCT="" +STR_EN_VENDOR="Google" +STR_EN_PRODUCT="" +DEV_MAC_ADDR="" +HOST_MAC_ADDR="" +BIND_DEVICE="" +ACTION="start" +GADGET_DIR_NAME="g1" +IFACE_NAME="usb0" +while [[ $# -gt 0 ]]; do + case "$1" in + --product-id) + ID_PRODUCT=$2 + shift 2 + ;; + --product-name) + STR_EN_PRODUCT=$2 + shift 2 + ;; + --host-mac) + HOST_MAC_ADDR=$2 + shift 2 + ;; + --dev-mac) + DEV_MAC_ADDR=$2 + shift 2 + ;; + --bind-device) + BIND_DEVICE=$2 + shift 2 + ;; + --gadget-dir-name) + GADGET_DIR_NAME=$2 + shift 2 + ;; + --iface-name) + IFACE_NAME=$2 + shift 2 + ;; + --help) + print_usage + exit 0 + ;; + start) + ACTION="start" + shift 1 + break + ;; + stop) + ACTION="stop" + shift 1 + break + ;; + --) + shift 1 + ;; + *) + break + ;; + esac +done + +if [[ $ACTION == "stop" ]]; then + gadget_stop +else + gadget_start +fi |