# # Copyright (c) 2014 Spectra Logic Corporation # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions, and the following disclaimer, # without modification. # 2. Redistributions in binary form must reproduce at minimum a disclaimer # substantially similar to the "NO WARRANTY" disclaimer below # ("Disclaimer") and any redistribution must be conditioned upon # including a substantially similar Disclaimer requirement for further # binary redistribution. # # NO WARRANTY # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT # HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING # IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGES. # # Authors: Alan Somers (Spectra Logic Corporation) # # $FreeBSD$ atf_test_case create cleanup create_head() { atf_set "descr" "Create a lagg and assign an address" atf_set "require.user" "root" } create_body() { local TAP0 TAP1 LAGG MAC # Configure the lagg interface to use an RFC5737 nonrouteable addresses ADDR="192.0.2.2" MASK="24" TAP0=`get_tap` TAP1=`get_tap` LAGG=`get_lagg` # Create the lagg ifconfig $TAP0 up ifconfig $TAP1 up atf_check ifconfig $LAGG up laggport $TAP0 laggport $TAP1 \ ${ADDR}/${MASK} atf_check -o match:"inet ${ADDR}" ifconfig $LAGG atf_check -o match:"laggport: ${TAP0}" ifconfig $LAGG atf_check -o match:"laggport: ${TAP1}" ifconfig $LAGG # Check that all members have the same MAC MAC=`ifconfig $LAGG | awk '/ether/ {print $2}'` atf_check -o match:"ether ${MAC}" ifconfig $TAP0 atf_check -o match:"ether ${MAC}" ifconfig $TAP1 # Check that no members have an IPv6 link-local address. IPv6 # link-local addresses should never be merged in any way to prevent # scope violation. atf_check -o not-match:"inet6 fe80:" ifconfig $TAP0 atf_check -o not-match:"inet6 fe80:" ifconfig $TAP1 } create_cleanup() { cleanup_tap_and_lagg } atf_test_case status_stress cleanup status_stress_head() { atf_set "descr" "Simultaneously query a lagg while also creating or destroying it." atf_set "require.user" "root" } status_stress_body() { local TAP0 TAP1 LAGG MAC if [ "$(atf_config_get ci false)" = "true" ]; then atf_skip "Skipping this test because it panics the machine fairly often" fi # Configure the lagg interface to use an RFC5737 nonrouteable addresses ADDR="192.0.2.2" MASK="24" TAP0=`get_tap` TAP1=`get_tap` TAP2=`get_tap` TAP3=`get_tap` LAGG=`get_lagg` # Up the lagg's children ifconfig $TAP0 inet6 ifdisabled up ifconfig $TAP1 inet6 ifdisabled up ifconfig $TAP2 inet6 ifdisabled up ifconfig $TAP3 inet6 ifdisabled up # First thread: create and destroy the lagg while true; do ifconfig $LAGG destroy 2>&1 ifconfig $LAGG create 2>/dev/null ifconfig $LAGG inet6 ifdisabled ifconfig $LAGG up laggport $TAP0 laggport $TAP1 laggport $TAP2\ laggport $TAP3 ${ADDR}/${MASK} 2>/dev/null echo -n . >> creator_count.txt done & CREATOR_PID=$! # Second thread: Query the lagg's status while true; do ifconfig -am 2> /dev/null > /dev/null echo -n . >> querier_count.txt done & QUERIER_PID=$! sleep 60 kill $CREATOR_PID kill $QUERIER_PID echo "Created the lagg `stat -f %z creator_count.txt` times." echo "Queried its status `stat -f %z querier_count.txt` times" } status_stress_cleanup() { cleanup_tap_and_lagg } atf_test_case create_destroy_stress cleanup create_destroy_stress_head() { atf_set "descr" "Simultaneously create and destroy a lagg" atf_set "require.user" "root" } create_destroy_stress_body() { local TAP0 TAP1 LAGG MAC atf_skip "Skipping this test because it easily panics the machine" TAP0=`get_tap` TAP1=`get_tap` TAP2=`get_tap` TAP3=`get_tap` LAGG=`get_lagg` # Up the lagg's children ifconfig $TAP0 inet6 ifdisabled up ifconfig $TAP1 inet6 ifdisabled up ifconfig $TAP2 inet6 ifdisabled up ifconfig $TAP3 inet6 ifdisabled up # First thread: create the lagg while true; do ifconfig $LAGG create 2>/dev/null && \ echo -n . >> creator_count.txt done & CREATOR_PID=$! # Second thread: destroy the lagg while true; do ifconfig $LAGG destroy 2>/dev/null && \ echo -n . >> destroyer_count.txt done & DESTROYER_PID=$! sleep 60 kill $CREATOR_PID kill $DESTROYER_PID echo "Created the lagg `stat -f %z creator_count.txt` times." echo "Destroyed it `stat -f %z destroyer_count.txt` times." } create_destroy_stress_cleanup() { cleanup_tap_and_lagg } # This test regresses a panic that is particular to LACP. If the child's link # state changes while the lagg is being destroyed, lacp_linkstate can # use-after-free. The problem is compounded by two factors: # 1) In SpectraBSD, downing the parent will also down the child # 2) The cxgbe driver will show the link state as "no carrier" as soon as you # down the interface. # TeamTrack: P2_30328 atf_test_case lacp_linkstate_destroy_stress cleanup lacp_linkstate_destroy_stress_head() { atf_set "descr" "Simultaneously destroy an LACP lagg and change its childrens link states" atf_set "require.user" "root" } lacp_linkstate_destroy_stress_body() { if [ "$(atf_config_get ci false)" = "true" ]; then atf_skip "https://bugs.freebsd.org/244168" fi local TAP0 TAP1 LAGG MAC SRCDIR # Configure the lagg interface to use an RFC5737 nonrouteable addresses ADDR="192.0.2.2" MASK="24" # ifconfig takes about 10ms to run. To increase race coverage, # randomly delay the two commands relative to each other by 5ms either # way. MEAN_SLEEP_SECONDS=.005 MAX_SLEEP_USECS=10000 TAP0=`get_tap` TAP1=`get_tap` LAGG=`get_lagg` # Up the lagg's children ifconfig $TAP0 inet6 ifdisabled up ifconfig $TAP1 inet6 ifdisabled up SRCDIR=$( atf_get_srcdir ) while true; do ifconfig $LAGG inet6 ifdisabled # We must open the tap devices to change their link states cat /dev/$TAP0 > /dev/null & CAT0_PID=$! cat /dev/$TAP1 > /dev/null & CAT1_PID=$! ifconfig $LAGG up laggport $TAP0 laggport $TAP1 \ ${ADDR}/${MASK} 2> /dev/null && { sleep ${MEAN_SLEEP_SECONDS} && \ kill $CAT0_PID && kill $CAT1_PID && echo -n . >> linkstate_count.txt ; } & { ${SRCDIR}/randsleep ${MAX_SLEEP_USECS} && \ ifconfig $LAGG destroy && echo -n . >> destroy_count.txt ; } & wait ifconfig $LAGG create done & LOOP_PID=$! sleep 60 kill $LOOP_PID echo "Disconnected the children `stat -f %z linkstate_count.txt` times." echo "Destroyed the lagg `stat -f %z destroy_count.txt` times." } lacp_linkstate_destroy_stress_cleanup() { cleanup_tap_and_lagg } atf_test_case up_destroy_stress cleanup up_destroy_stress_head() { atf_set "descr" "Simultaneously up and destroy a lagg" atf_set "require.user" "root" } up_destroy_stress_body() { local TAP0 TAP1 LAGG MAC SRCDIR atf_skip "Skipping this test because it panics the machine fairly often" # Configure the lagg interface to use an RFC5737 nonrouteable addresses ADDR="192.0.2.2" MASK="24" # ifconfig takes about 10ms to run. To increase race coverage, # randomly delay the two commands relative to each other by 5ms either # way. MEAN_SLEEP_SECONDS=.005 MAX_SLEEP_USECS=10000 TAP0=`get_tap` TAP1=`get_tap` TAP2=`get_tap` TAP3=`get_tap` LAGG=`get_lagg` # Up the lagg's children ifconfig $TAP0 inet6 ifdisabled up ifconfig $TAP1 inet6 ifdisabled up ifconfig $TAP2 inet6 ifdisabled up ifconfig $TAP3 inet6 ifdisabled up SRCDIR=$( atf_get_srcdir ) while true; do ifconfig $LAGG inet6 ifdisabled { sleep ${MEAN_SLEEP_SECONDS} && \ ifconfig $LAGG up laggport $TAP0 laggport $TAP1 \ laggport $TAP2 laggport $TAP3 \ ${ADDR}/${MASK} 2> /dev/null && echo -n . >> up_count.txt ; } & { ${SRCDIR}/randsleep ${MAX_SLEEP_USECS} && \ ifconfig $LAGG destroy && echo -n . >> destroy_count.txt ; } & wait ifconfig $LAGG create done & LOOP_PID=$! sleep 60 kill $LOOP_PID echo "Upped the lagg `stat -f %z up_count.txt` times." echo "Destroyed it `stat -f %z destroy_count.txt` times." } up_destroy_stress_cleanup() { cleanup_tap_and_lagg } atf_test_case set_ether cleanup set_ether_head() { atf_set "descr" "Set a lagg's ethernet address" atf_set "require.user" "root" } set_ether_body() { local TAP0 TAP1 LAGG MAC # Configure the lagg interface to use an RFC5737 nonrouteable addresses ADDR="192.0.2.2" MASK="24" MAC="00:11:22:33:44:55" TAP0=`get_tap` TAP1=`get_tap` LAGG=`get_lagg` # Create the lagg ifconfig $TAP0 up ifconfig $TAP1 up atf_check ifconfig $LAGG up laggport $TAP0 laggport $TAP1 \ ${ADDR}/${MASK} # Change the lagg's ethernet address atf_check ifconfig $LAGG ether ${MAC} # Check that all members have the same MAC atf_check -o match:"ether ${MAC}" ifconfig $LAGG atf_check -o match:"ether ${MAC}" ifconfig $TAP0 atf_check -o match:"ether ${MAC}" ifconfig $TAP1 } set_ether_cleanup() { cleanup_tap_and_lagg } atf_test_case updown cleanup updown_head() { atf_set "descr" "upping or downing a lagg ups or downs its children" atf_set "require.user" "root" } updown_body() { local TAP0 TAP1 LAGG MAC atf_expect_fail "PR 226144 Upping a lagg interrface should automatically up its children" # Configure the lagg interface to use an RFC5737 nonrouteable addresses ADDR="192.0.2.2" MASK="24" MAC="00:11:22:33:44:55" TAP0=`get_tap` TAP1=`get_tap` LAGG=`get_lagg` # Create the lagg ifconfig $TAP0 up ifconfig $TAP1 up atf_check ifconfig $LAGG up laggport $TAP0 laggport $TAP1 \ ${ADDR}/${MASK} # Down the lagg ifconfig $LAGG down atf_check -o not-match:"flags=.*\" ifconfig $LAGG atf_check -o not-match:"flags=.*\" ifconfig $TAP0 atf_check -o not-match:"flags=.*\" ifconfig $TAP1 # Up the lagg again ifconfig $LAGG up atf_check -o match:"flags=.*\" ifconfig $LAGG atf_check -o match:"flags=.*\" ifconfig $TAP0 atf_check -o match:"flags=.*\" ifconfig $TAP1 # Check that no members have acquired an IPv6 link-local address by # virtue of being upped. IPv6 link-local addresses should never be # merged in any way to prevent scope violation. atf_check -o not-match:"inet6 fe80:" ifconfig $TAP0 atf_check -o not-match:"inet6 fe80:" ifconfig $TAP1 } updown_cleanup() { cleanup_tap_and_lagg } # Check for lock-order reversals. For best results, this test should be run # last. atf_test_case witness witness_head() { atf_set "descr" "Check witness(4) for lock-order reversals in if_lagg" } witness_body() { if [ "$(atf_config_get ci false)" = "true" ]; then atf_skip "https://bugs.freebsd.org/244163 and https://bugs.freebsd.org/251726" fi if [ `sysctl -n debug.witness.watch` -ne 1 ]; then atf_skip "witness(4) is not enabled" fi if `sysctl -n debug.witness.badstacks | grep -q 'at lagg_'`; then sysctl debug.witness.badstacks atf_fail "Lock-order reversals involving if_lagg.c detected" fi } atf_init_test_cases() { atf_add_test_case create atf_add_test_case create_destroy_stress atf_add_test_case lacp_linkstate_destroy_stress atf_add_test_case set_ether atf_add_test_case status_stress atf_add_test_case up_destroy_stress atf_add_test_case updown # For best results, keep the witness test last atf_add_test_case witness } # Creates a new tap(4) interface, registers it for cleanup, and echoes it get_tap() { local TAPN=0 while ! ifconfig tap${TAPN} create > /dev/null 2>&1; do if [ "$TAPN" -ge 8 ]; then atf_skip "Could not create a tap(4) interface" else TAPN=$(($TAPN + 1)) fi done local TAPD=tap${TAPN} # Record the TAP device so we can clean it up later echo ${TAPD} >> "devices_to_cleanup" echo ${TAPD} } # Creates a new lagg(4) interface, registers it for cleanup, and echoes it get_lagg() { local LAGGN=0 while ! ifconfig lagg${LAGGN} create > /dev/null 2>&1; do if [ "$LAGGN" -ge 8 ]; then atf_skip "Could not create a lagg(4) interface" else LAGGN=$(($LAGGN + 1)) fi done local LAGGD=lagg${LAGGN} # Record the lagg device so we can clean it up later echo ${LAGGD} >> "devices_to_cleanup" echo ${LAGGD} } cleanup_tap_and_lagg() { local DEV for DEV in `cat "devices_to_cleanup"`; do ifconfig ${DEV} destroy done true }