diff options
Diffstat (limited to 'examples/l4fwd/test/nctxrx.sh')
| -rw-r--r-- | examples/l4fwd/test/nctxrx.sh | 110 |
1 files changed, 67 insertions, 43 deletions
diff --git a/examples/l4fwd/test/nctxrx.sh b/examples/l4fwd/test/nctxrx.sh index 6a016e0..98f84c2 100644 --- a/examples/l4fwd/test/nctxrx.sh +++ b/examples/l4fwd/test/nctxrx.sh @@ -8,41 +8,54 @@ # script with -h (help) # # User needs to specify following environment variables: -# ETH_DEV - ethernet device to be used on SUT by DPDK +# L4FWD_PATH - path to l4fwd app binary +# ETH_DEV - for real NIC usage - ethernet device to be used on SUT by DPDK +# - for tap interface - tap +# +# User needs to set following enviroment variables in case of real NIC usage: # REMOTE_HOST - ip/hostname of DUT # REMOTE_IFACE - interface name for the test-port on DUT # LOCAL_MAC - MAC address used by DPDK -# L4FWD_PATH - path to l4fwd app binary +# # Optional envirenment variables: # L4FWD_FECORE - core on which l4fwd frontend should run # L4FWD_BECORE - core on which l4fwd backend should run # -# The purpose of the script is to automate validation tests for l4fwd app -# where packets are out of order/lost. It expects l4fwd application being -# run on local linux system (SUT). Script is operating on remote linux -# machine (DUT) with use of ssh. SUT and DUT are connected via NIC. On SUT -# network traffic is managed by DPDK and on DUT by linux. On DUT netcat is -# used to send test data via TCP to TLDK on SUT, which is set to echo mode +# The purpose of the script is to automate validation tests for l4fwd app where +# packets are out of order/lost. Script is operating on local linux machine only +# or on local and remote machine (depending on enviroment variables). +# +# For local machine only, l4fwd application is being run by the script, which +# sets up the tap interface. Created interface is serving a connection for l4fwd +# and netcat within the same OS. +# +# For local/remote linux machine mode, script uses real NIC specified in +# enviroment variable. Connection with remote machine is made via ssh. L4fwd app +# is being run on local machine, while interface and netcat are being set on +# remote side (operated by linux). +# +# Netcat is used to send test data via TCP to l4fwd, which is set to echo mode # (sends back the same data). Depending on test specified, TCP segments are -# artificially changed in sending buffer of DUT, so they are lost in some -# percentage or sent out of order. If specified, report is sent from DUT -# to SUT after all tests were performed. +# artificially changed inside sending buffer, so they are lost in some +# percentage or sent out of order. Report is printed after all tests were +# performed. # -# Example traffic visualisation: -# DUT --(TCP out of order)--> SUT --(TCP with correct order)--> DUT(validation) +# Example of traffic visualisation +# Netcat(TAP/NIC) --(TCP out of order)--> (TAP/NIC)L4FWD(TAP/NIC) -- +# --(TCP with correct order)--> (TAP/NIC)Netcat(validation) # options which can be changed by the user if needed--------------------------- # timeout in [s] for calling nc (in case traffic stuck) timeout=600 -# delay for netem (50 [ms] is default value when reorder option used) +# delay for netem (20 [ms] is default value when reorder option used) delay=0 # default loss of packets [%] value loss=0 -# default probability [%] of not losing burst of packets +# default probability [%] of not loosing burst of packets loss_burst=80 # variables used by script----------------------------------------------------- @@ -55,7 +68,7 @@ rmresults="" set_netem=0 # flag to check if default files should to be used (default 1) -# default files are generated with urandom (couple of sizes) +# default files are generated with urandom default_file=1 # IP protocol version @@ -160,7 +173,7 @@ done # load configuration . $(dirname $0)/config.sh -# send file with results to local machine +# send file with results to local machine when in real NIC mode send_results() { if_verbose echo -e "Sending result file to local" @@ -185,7 +198,7 @@ run_test() # -q 0 -> wait 0 seconds after EOF and quit # timeout to deal with hanging connection when sth went wrong # feed netcat with {of} file to send - # receiving end is redirected to out/...out files + # receiving end is redirected to out/...out file # 'exec' for redirecting nc err output to not mess result cmd="exec 4>&2 \$({ time timeout ${timeout} nc ${nc_ipv6} -q 0 ${nc_addr} ${TCP_PORT} \ @@ -195,13 +208,18 @@ run_test() exec 4>&-" # create temporary file for nc command to execute - xf=$(ssh ${REMOTE_HOST} mktemp -p ${REMOTE_DIR}) + xf=$(use_ssh mktemp -p ${REMOTE_DIR}) # store command from {cmd} into temporaty file - echo "${cmd}" | ssh ${REMOTE_HOST} "cat > ${xf}" + if [[ ${USE_TAP} -eq 0 ]] + then + echo "${cmd}" | ssh ${REMOTE_HOST} "cat > ${xf}" + else + echo "${cmd}" | cat > ${xf} + fi # execute nc command in the background - ssh ${REMOTE_HOST} /bin/bash ${xf} & + use_ssh /bin/bash ${xf} & pids="${pids} $!" @@ -219,7 +237,7 @@ exec 4>&-" wait ${pids} # remove temporary files - ssh ${REMOTE_HOST} rm -f ${rmxf} + use_ssh rm -f ${rmxf} # visual break if_verbose echo -e "\nNetstat:" @@ -227,13 +245,13 @@ exec 4>&-" # prints network information for given {TCP_PORT} number # -n -> show numeric addresses # -a -> show all (both listening and non-listening sockets) - if_verbose ssh ${REMOTE_HOST} netstat -na | grep ${TCP_PORT} + if_verbose use_ssh netstat -na | grep ${TCP_PORT} # visual break if_verbose echo -e "\nJobs:" # display status of jobs in the current session (this bash script) - if_verbose ssh ${REMOTE_HOST} jobs -l + if_verbose use_ssh jobs -l # visual break if_verbose echo -e "\nNetcat processes:" @@ -242,7 +260,7 @@ exec 4>&-" # -e -> show all processes # -f -> do full format listing (more info) # grep -v -> get rid of the following word match from grep output - if_verbose ssh ${REMOTE_HOST} ps -ef | grep "nc " | grep -v grep + if_verbose use_ssh ps -ef | grep "nc " | grep -v grep # visual break if_verbose echo -e "\nRunning validation" @@ -252,13 +270,12 @@ exec 4>&-" while [[ ${i} -lt ${num} ]] do # prints checksum of sent and received file - if_verbose ssh ${REMOTE_HOST} cksum ${REMOTE_DIR}/${of} \ + if_verbose use_ssh cksum ${REMOTE_DIR}/${of} \ ${REMOTE_OUTDIR}/${of}.out.${i} # compares sent and received files if they match # compare {of} and {out/of.out.i} line by line - ssh ${REMOTE_HOST} diff ${REMOTE_DIR}/${of} \ - ${REMOTE_OUTDIR}/${of}.out.${i} + use_ssh diff ${REMOTE_DIR}/${of} ${REMOTE_OUTDIR}/${of}.out.${i} # capture the result of diff command above rc=$? @@ -280,15 +297,15 @@ exec 4>&-" fi # remove received file from out/ directory - ssh ${REMOTE_HOST} rm -f ${REMOTE_OUTDIR}/${of}.out.${i} + use_ssh rm -f ${REMOTE_OUTDIR}/${of}.out.${i} i=$(expr $i + 1) done # remove temporary results - ssh ${REMOTE_HOST} rm -f ${rmresults} + use_ssh rm -f ${rmresults} - if [[ flag_error -eq 1 ]] + if [[ flag_error -ne 0 ]] then return ${flag_error} fi @@ -296,13 +313,17 @@ exec 4>&-" if_verbose echo "" echo -e "TEST SUCCESSFUL - ${of}" if_verbose echo "" + return 0 } # clean up after error or end of tests cleanup() { - send_results + if [[ ${USE_TAP} -eq 0 ]] + then + send_results + fi restore_netem l4fwd_stop remove_directories @@ -310,17 +331,20 @@ cleanup() # script start----------------------------------------------------------------- -#configure remote machine -configure_remote - # start l4fwd app l4fwd_start +#configure configure tap interfaces +configure_interfaces + # check if default files should be used if [[ ${default_file} -eq 0 ]] then if_verbose echo -e "Sending test file to remote" - scp ${scp_suppress} ${file} ${REMOTE_HOST}:${REMOTE_DIR} + if [[ ${USE_TAP} -eq 0 ]] + then + scp ${scp_suppress} ${file} ${REMOTE_HOST}:${REMOTE_DIR} + fi run_test ${file} # check test outcome @@ -330,17 +354,17 @@ then cleanup exit ${ret} fi - ssh ${REMOTE_HOST} rm -f ${REMOTE_DIR}/${file} + use_ssh rm -f ${REMOTE_DIR}/${file} else - # use default files with size 16MB - for size in 16 + # use default files with size 8MB + for size in 8 do # generate file - if_verbose echo -e "Generating ${size}MB file for test" - x=$(ssh ${REMOTE_HOST} mktemp $(basename $0).${size}MB.XXX \ + if_verbose echo -e "\nGenerating ${size}MB file for test" + x=$(use_ssh mktemp $(basename $0).${size}MB.XXX \ -p ${REMOTE_DIR}) - ssh ${REMOTE_HOST} dd if=/dev/urandom of=${x} bs=1M \ + use_ssh dd if=/dev/urandom of=${x} bs=1M \ count=${size} ${dd_suppress} # run test over generated file @@ -355,7 +379,7 @@ else fi # remove generated file only if test successful - ssh ${REMOTE_HOST} rm -f ${x} + use_ssh rm -f ${x} done fi |