#!/usr/bin/env bash # SPDX-License-Identifier: GPL-2.0 # This is a selftest to test cmdline arguments on netconsole. # It exercises loading of netconsole from cmdline instead of the dynamic # reconfiguration. This includes parsing the long netconsole= line and all the # flow through init_netconsole(). # # Author: Breno Leitao set -euo pipefail SCRIPTDIR=$(dirname "$(readlink -e "${BASH_SOURCE[0]}")") source "${SCRIPTDIR}"/lib/sh/lib_netcons.sh check_netconsole_module modprobe netdevsim 2> /dev/null || true rmmod netconsole 2> /dev/null || true # 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 and network interfaces trap do_cleanup EXIT # Create one namespace and two interfaces set_network # Run the test twice, with different cmdline parameters for BINDMODE in "ifname" "mac" do echo "Running with bind mode: ${BINDMODE}" >&2 # Create the command line for netconsole, with the configuration from # the function above CMDLINE=$(create_cmdline_str "${BINDMODE}") # The content of kmsg will be save to the following file OUTPUT_FILE="/tmp/${TARGET}-${BINDMODE}" # Load the module, with the cmdline set modprobe netconsole "${CMDLINE}" # 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 "${OUTPUT_FILE}" # Make sure the message was received in the dst part # and exit validate_msg "${OUTPUT_FILE}" # kill socat in case it is still running pkill_socat # Unload the module rmmod netconsole echo "${BINDMODE} : Test passed" >&2 done exit "${ksft_pass}"