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Diffstat (limited to 'test/packetdrill/packetdrill_test.sh')
| -rwxr-xr-x | test/packetdrill/packetdrill_test.sh | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/test/packetdrill/packetdrill_test.sh b/test/packetdrill/packetdrill_test.sh deleted file mode 100755 index 922547d65..000000000 --- a/test/packetdrill/packetdrill_test.sh +++ /dev/null @@ -1,226 +0,0 @@ -#!/bin/bash - -# Copyright 2020 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -# Run a packetdrill test. Two docker containers are made, one for the -# Device-Under-Test (DUT) and one for the test runner. Each is attached with -# two networks, one for control packets that aid the test and one for test -# packets which are sent as part of the test and observed for correctness. - -set -euxo pipefail - -function failure() { - local lineno=$1 - local msg=$2 - local filename="$0" - echo "FAIL: $filename:$lineno: $msg" -} -trap 'failure ${LINENO} "$BASH_COMMAND"' ERR - -declare -r LONGOPTS="dut_platform:,init_script:,runtime:" - -# Don't use declare below so that the error from getopt will end the script. -PARSED=$(getopt --options "" --longoptions=$LONGOPTS --name "$0" -- "$@") - -eval set -- "$PARSED" - -while true; do - case "$1" in - --dut_platform) - # Either "linux" or "netstack". - declare -r DUT_PLATFORM="$2" - shift 2 - ;; - --init_script) - declare -r INIT_SCRIPT="$2" - shift 2 - ;; - --runtime) - # Not readonly because there might be multiple --runtime arguments and we - # want to use just the last one. Only used if --dut_platform is - # "netstack". - declare RUNTIME="$2" - shift 2 - ;; - --) - shift - break - ;; - *) - echo "Programming error" - exit 3 - esac -done - -# All the other arguments are scripts. -declare -r scripts="$@" - -# Check that the required flags are defined in a way that is safe for "set -u". -if [[ "${DUT_PLATFORM-}" == "netstack" ]]; then - if [[ -z "${RUNTIME-}" ]]; then - echo "FAIL: Missing --runtime argument: ${RUNTIME-}" - exit 2 - fi - declare -r RUNTIME_ARG="--runtime ${RUNTIME}" -elif [[ "${DUT_PLATFORM-}" == "linux" ]]; then - declare -r RUNTIME_ARG="" -else - echo "FAIL: Bad or missing --dut_platform argument: ${DUT_PLATFORM-}" - exit 2 -fi -if [[ ! -x "${INIT_SCRIPT-}" ]]; then - echo "FAIL: Bad or missing --init_script: ${INIT_SCRIPT-}" - exit 2 -fi - -function new_net_prefix() { - # Class C, 192.0.0.0 to 223.255.255.255, transitionally has mask 24. - echo "$(shuf -i 192-223 -n 1).$(shuf -i 0-255 -n 1).$(shuf -i 0-255 -n 1)" -} - -# Variables specific to the control network and interface start with CTRL_. -# Variables specific to the test network and interface start with TEST_. -# Variables specific to the DUT start with DUT_. -# Variables specific to the test runner start with TEST_RUNNER_. -declare -r PACKETDRILL="/packetdrill/gtests/net/packetdrill/packetdrill" -# Use random numbers so that test networks don't collide. -declare CTRL_NET="ctrl_net-$(shuf -i 0-99999999 -n 1)" -declare CTRL_NET_PREFIX=$(new_net_prefix) -declare TEST_NET="test_net-$(shuf -i 0-99999999 -n 1)" -declare TEST_NET_PREFIX=$(new_net_prefix) -declare -r tolerance_usecs=100000 -# On both DUT and test runner, testing packets are on the eth2 interface. -declare -r TEST_DEVICE="eth2" -# Number of bits in the *_NET_PREFIX variables. -declare -r NET_MASK="24" -# Last bits of the DUT's IP address. -declare -r DUT_NET_SUFFIX=".10" -# Control port. -declare -r CTRL_PORT="40000" -# Last bits of the test runner's IP address. -declare -r TEST_RUNNER_NET_SUFFIX=".20" -declare -r TIMEOUT="60" -declare -r IMAGE_TAG="gcr.io/gvisor-presubmit/packetdrill" - -# Make sure that docker is installed. -docker --version - -function finish { - local cleanup_success=1 - for net in "${CTRL_NET}" "${TEST_NET}"; do - # Kill all processes attached to ${net}. - for docker_command in "kill" "rm"; do - (docker network inspect "${net}" \ - --format '{{range $key, $value := .Containers}}{{$key}} {{end}}' \ - | xargs -r docker "${docker_command}") || \ - cleanup_success=0 - done - # Remove the network. - docker network rm "${net}" || \ - cleanup_success=0 - done - - if ((!$cleanup_success)); then - echo "FAIL: Cleanup command failed" - exit 4 - fi -} -trap finish EXIT - -# Subnet for control packets between test runner and DUT. -while ! docker network create \ - "--subnet=${CTRL_NET_PREFIX}.0/${NET_MASK}" "${CTRL_NET}"; do - sleep 0.1 - CTRL_NET_PREFIX=$(new_net_prefix) - CTRL_NET="ctrl_net-$(shuf -i 0-99999999 -n 1)" -done - -# Subnet for the packets that are part of the test. -while ! docker network create \ - "--subnet=${TEST_NET_PREFIX}.0/${NET_MASK}" "${TEST_NET}"; do - sleep 0.1 - TEST_NET_PREFIX=$(new_net_prefix) - TEST_NET="test_net-$(shuf -i 0-99999999 -n 1)" -done - -# Create the DUT container and connect to network. -DUT=$(docker create ${RUNTIME_ARG} --privileged --rm \ - --stop-timeout ${TIMEOUT} -it ${IMAGE_TAG}) -docker network connect "${CTRL_NET}" \ - --ip "${CTRL_NET_PREFIX}${DUT_NET_SUFFIX}" "${DUT}" \ - || (docker kill ${DUT}; docker rm ${DUT}; false) -docker network connect "${TEST_NET}" \ - --ip "${TEST_NET_PREFIX}${DUT_NET_SUFFIX}" "${DUT}" \ - || (docker kill ${DUT}; docker rm ${DUT}; false) -docker start "${DUT}" - -# Create the test runner container and connect to network. -TEST_RUNNER=$(docker create --privileged --rm \ - --stop-timeout ${TIMEOUT} -it ${IMAGE_TAG}) -docker network connect "${CTRL_NET}" \ - --ip "${CTRL_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" "${TEST_RUNNER}" \ - || (docker kill ${TEST_RUNNER}; docker rm ${REST_RUNNER}; false) -docker network connect "${TEST_NET}" \ - --ip "${TEST_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" "${TEST_RUNNER}" \ - || (docker kill ${TEST_RUNNER}; docker rm ${REST_RUNNER}; false) -docker start "${TEST_RUNNER}" - -# Run tcpdump in the test runner unbuffered, without dns resolution, just on the -# interface with the test packets. -docker exec -t ${TEST_RUNNER} tcpdump -U -n -i "${TEST_DEVICE}" & - -# Start a packetdrill server on the test_runner. The packetdrill server sends -# packets and asserts that they are received. -docker exec -d "${TEST_RUNNER}" \ - ${PACKETDRILL} --wire_server --wire_server_dev="${TEST_DEVICE}" \ - --wire_server_ip="${CTRL_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" \ - --wire_server_port="${CTRL_PORT}" \ - --local_ip="${TEST_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" \ - --remote_ip="${TEST_NET_PREFIX}${DUT_NET_SUFFIX}" - -# Because the Linux kernel receives the SYN-ACK but didn't send the SYN it will -# issue a RST. To prevent this IPtables can be used to filter those out. -docker exec "${TEST_RUNNER}" \ - iptables -A OUTPUT -p tcp --tcp-flags RST RST -j DROP - -# Wait for the packetdrill server on the test runner to come. Attempt to -# connect to it from the DUT every 100 milliseconds until success. -while ! docker exec "${DUT}" \ - nc -zv "${CTRL_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" "${CTRL_PORT}"; do - sleep 0.1 -done - -# Copy the packetdrill setup script to the DUT. -docker cp -L "${INIT_SCRIPT}" "${DUT}:packetdrill_setup.sh" - -# Copy the packetdrill scripts to the DUT. -declare -a dut_scripts -for script in $scripts; do - docker cp -L "${script}" "${DUT}:$(basename ${script})" - dut_scripts+=("/$(basename ${script})") -done - -# Start a packetdrill client on the DUT. The packetdrill client runs POSIX -# socket commands and also sends instructions to the server. -docker exec -t "${DUT}" \ - ${PACKETDRILL} --wire_client --wire_client_dev="${TEST_DEVICE}" \ - --wire_server_ip="${CTRL_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" \ - --wire_server_port="${CTRL_PORT}" \ - --local_ip="${TEST_NET_PREFIX}${DUT_NET_SUFFIX}" \ - --remote_ip="${TEST_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" \ - --init_scripts=/packetdrill_setup.sh \ - --tolerance_usecs="${tolerance_usecs}" "${dut_scripts[@]}" - -echo PASS: No errors. |