Initial commit

meta-quanta/meta-common/recipes-quanta/network/usb-network/usb-network.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Enable USB Network
+
+[Service]
+Type=oneshot
+ExecStart=/usr/sbin/usb-network.sh
+EnvironmentFile=/usr/share/usb-network/usb-network.conf
+
+[Install]
+WantedBy=multi-user.target

meta-quanta/meta-common/recipes-quanta/network/usb-network/usb-network.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+
+mac_config="/usr/share/mac-address/config.txt"
+dev_mac_path="/tmp/usb0_dev"
+host_mac_path="/tmp/usb0_host"
+
+check_usb_local_administered() {
+    is_enable="$(cat ${mac_config} | grep 'USBLAA')"
+    echo "${is_enable}"
+}
+
+# Set the locally administered bit (the second least-significant
+# bit of the first octet) of the MAC address
+set_local_administered_bit() {
+    mac="$(tr -d '\0' < "$1")"
+    first_byte="${mac:0:2}"
+    first_byte="$((0x$first_byte|2))"
+    first_byte="$(printf "%02x\n" "$first_byte")"
+    mac="${first_byte}${mac:2}"
+    echo "$mac"
+}
+
+cd /sys/kernel/config/usb_gadget || exit 1
+
+if [ ! -f "g1" ]; then
+    mkdir g1
+    cd g1 || exit 1
+
+    echo 0x1d6b > idVendor  # Linux foundation
+    echo 0x0104 > idProduct # Multifunction composite gadget
+    mkdir -p strings/0x409
+    echo "Linux" > strings/0x409/manufacturer
+    echo "Etherned/ECM gadget" > strings/0x409/product
+
+    mkdir -p configs/c.1
+    echo 100 > configs/c.1/MaxPower
+    mkdir -p configs/c.1/strings/0x409
+    echo "ECM" > configs/c.1/strings/0x409/configuration
+
+
+    if [[ $(check_usb_local_administered) == "USBLAA=true" ]]; then
+        dev_mac="$(set_local_administered_bit $dev_mac_path)"
+        host_mac="$(set_local_administered_bit $host_mac_path)"
+        echo "$dev_mac" > $dev_mac_path
+        echo "$host_mac" > $host_mac_path
+    fi
+
+    mkdir -p functions/ecm.usb0
+    cat $dev_mac_path > functions/ecm.usb0/dev_addr # write device mac address
+    cat $host_mac_path > functions/ecm.usb0/host_addr # write usb mac address
+
+    ln -s functions/ecm.usb0 configs/c.1
+
+    echo "$UDC" > UDC
+
+    rm $dev_mac_path
+    rm $host_mac_path
+
+fi
+
+exit 0