script: test.sh

dist/tools/chamoc/start_network.sh

@@ -0,0 +1,69 @@
+#!/usr/bin/env bash
+
+SUDO=${SUDO:-sudo}
+
+USB_CDC_ECM_DIR="$(dirname "$(readlink -f "$0")")"
+
+INTERFACE_CHECK_COUNTER=5  # 5 attempts to find usb interface
+
+find_interface() {
+    INTERFACE=$(ls -A /sys/bus/usb/drivers/cdc_ether/*/net/ 2>/dev/null)
+    INTERFACE_CHECK=$(echo -n "${INTERFACE}" | head -c1 | wc -c)
+    if [ "${INTERFACE_CHECK}" -eq 0 ] && [ ${INTERFACE_CHECK_COUNTER} != 0 ]; then
+        # We want to have multiple opportunities to find the USB interface
+        # as sometimes it can take a few seconds for it to enumerate after
+        # the device has been flashed.
+        sleep 1
+        ((INTERFACE_CHECK_COUNTER=INTERFACE_CHECK_COUNTER-1))
+        find_interface
+    fi
+    INTERFACE=${INTERFACE%/}
+}
+
+echo "Waiting for network interface."
+find_interface
+
+if [ "${INTERFACE_CHECK}" -eq 0 ]; then
+    echo "Unable to find network interface"
+    exit 1
+else
+    echo "Found interface: ${INTERFACE}"
+fi
+
+setup_interface() {
+    ${SUDO} sysctl -w net.ipv6.conf."${INTERFACE}".forwarding=1
+    ${SUDO} sysctl -w net.ipv6.conf."${INTERFACE}".accept_ra=0
+    ${SUDO} ip link set "${INTERFACE}" up
+    ${SUDO} ip a a 2001:db8::1/64 dev "${INTERFACE}"
+    ${SUDO} ip route add "${PREFIX}" via 2001:db8::1 dev "${INTERFACE}"
+}
+
+cleanup_interface() {
+    ${SUDO} ip a d 2001:db8::1/64 dev "${INTERFACE}"
+    ${SUDO} ip route del "${PREFIX}" via  2001:db8::1 dev "${INTERFACE}"
+}
+
+cleanup() {
+    echo "Cleaning up..."
+    cleanup_interface
+    trap "" INT QUIT TERM EXIT
+}
+
+
+PREFIX=$1
+
+if [ -n "$2" ]; then
+    PORT=$2
+fi
+
+trap "cleanup" INT QUIT TERM EXIT
+
+setup_interface
+
+if [ -z "${PORT}" ]; then
+    echo "Network enabled over CDC-ECM"
+    echo "Press Return to stop"
+    read -r
+else
+    "${USB_CDC_ECM_DIR}/../pyterm/pyterm" -p "${PORT}"
+fi