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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
source setup_loopback.sh
readonly SERVER_MAC="aa:00:00:00:00:02"
readonly CLIENT_MAC="aa:00:00:00:00:01"
readonly TESTS=("data" "ack" "flags" "tcp" "ip" "large")
readonly PROTOS=("ipv4" "ipv6")
dev="eth0"
test="all"
proto="ipv4"
setup_interrupt() {
# Use timer on host to trigger the network stack
# Also disable device interrupt to not depend on NIC interrupt
# Reduce test flakiness caused by unexpected interrupts
echo 100000 >"${FLUSH_PATH}"
echo 50 >"${IRQ_PATH}"
}
setup_ns() {
# Set up server_ns namespace and client_ns namespace
setup_macvlan_ns "${dev}" server_ns server "${SERVER_MAC}"
setup_macvlan_ns "${dev}" client_ns client "${CLIENT_MAC}"
}
cleanup_ns() {
cleanup_macvlan_ns server_ns server client_ns client
}
setup() {
setup_loopback_environment "${dev}"
setup_interrupt
}
cleanup() {
cleanup_loopback "${dev}"
echo "${FLUSH_TIMEOUT}" >"${FLUSH_PATH}"
echo "${HARD_IRQS}" >"${IRQ_PATH}"
}
run_test() {
local server_pid=0
local exit_code=0
local protocol=$1
local test=$2
local ARGS=( "--${protocol}" "--dmac" "${SERVER_MAC}" \
"--smac" "${CLIENT_MAC}" "--test" "${test}" "--verbose" )
setup_ns
# Each test is run 3 times to deflake, because given the receive timing,
# not all packets that should coalesce will be considered in the same flow
# on every try.
for tries in {1..3}; do
# Actual test starts here
ip netns exec server_ns ./gro "${ARGS[@]}" "--rx" "--iface" "server" \
1>>log.txt &
server_pid=$!
sleep 0.5 # to allow for socket init
ip netns exec client_ns ./gro "${ARGS[@]}" "--iface" "client" \
1>>log.txt
wait "${server_pid}"
exit_code=$?
if [[ "${exit_code}" -eq 0 ]]; then
break;
fi
done
cleanup_ns
echo ${exit_code}
}
run_all_tests() {
local failed_tests=()
for proto in "${PROTOS[@]}"; do
for test in "${TESTS[@]}"; do
echo "running test ${proto} ${test}" >&2
exit_code=$(run_test $proto $test)
if [[ "${exit_code}" -ne 0 ]]; then
failed_tests+=("${proto}_${test}")
fi;
done;
done
if [[ ${#failed_tests[@]} -ne 0 ]]; then
echo "failed tests: ${failed_tests[*]}. \
Please see log.txt for more logs"
exit 1
else
echo "All Tests Succeeded!"
fi;
}
usage() {
echo "Usage: $0 \
[-i <DEV>] \
[-t data|ack|flags|tcp|ip|large] \
[-p <ipv4|ipv6>]" 1>&2;
exit 1;
}
while getopts "i:t:p:" opt; do
case "${opt}" in
i)
dev="${OPTARG}"
;;
t)
test="${OPTARG}"
;;
p)
proto="${OPTARG}"
;;
*)
usage
;;
esac
done
readonly FLUSH_PATH="/sys/class/net/${dev}/gro_flush_timeout"
readonly IRQ_PATH="/sys/class/net/${dev}/napi_defer_hard_irqs"
readonly FLUSH_TIMEOUT="$(< ${FLUSH_PATH})"
readonly HARD_IRQS="$(< ${IRQ_PATH})"
setup
trap cleanup EXIT
if [[ "${test}" == "all" ]]; then
run_all_tests
else
run_test "${proto}" "${test}"
fi;
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