| #!/usr/bin/env bash | |
| # SPDX-License-Identifier: GPL-2.0 | |
| # This test creates two netdevsim virtual interfaces, assigns one of them (the | |
| # "destination interface") to a new namespace, and assigns IP addresses to both | |
| # interfaces. | |
| # | |
| # It listens on the destination interface using socat and configures a dynamic | |
| # target on netconsole, pointing to the destination IP address. | |
| # | |
| # Finally, it checks whether the message was received properly on the | |
| # destination interface. Note that this test may pollute the kernel log buffer | |
| # (dmesg) and relies on dynamic configuration and namespaces being configured. | |
| # | |
| # Author: Breno Leitao <leitao@debian.org> | |
| set -euo pipefail | |
| SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") | |
| source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh | |
| modprobe netdevsim 2> /dev/null || true | |
| modprobe netconsole 2> /dev/null || true | |
| # The content of kmsg will be save to the following file | |
| OUTPUT_FILE="/tmp/${TARGET}" | |
| # Check for basic system dependency and exit if not found | |
| check_for_dependencies | |
| # Set current loglevel to KERN_INFO(6), and default to KERN_NOTICE(5) | |
| echo "6 5" > /proc/sys/kernel/printk | |
| # Remove the namespace, interfaces and netconsole target on exit | |
| trap cleanup EXIT | |
| # Create one namespace and two interfaces | |
| set_network | |
| # Create a dynamic target for netconsole | |
| create_dynamic_target | |
| # Set userdata "key" with the "value" value | |
| set_user_data | |
| # Listed for netconsole port inside the namespace and destination interface | |
| listen_port_and_save_to "${OUTPUT_FILE}" & | |
| # Wait for socat to start and listen to the port. | |
| wait_local_port_listen "${NAMESPACE}" "${PORT}" udp | |
| # Send the message | |
| echo "${MSG}: ${TARGET}" > /dev/kmsg | |
| # Wait until socat saves the file to disk | |
| busywait "${BUSYWAIT_TIMEOUT}" test -s "${OUTPUT_FILE}" | |
| # Make sure the message was received in the dst part | |
| # and exit | |
| validate_result "${OUTPUT_FILE}" |