freebsd-skq/tests/sys/net/if_lagg_test.sh
asomers 79ce79e216 Add tests for lagg(4) and other cloned network interfaces
Unfortunately, most of the tests are disabled because they fairly frequently
trigger panics.

MFC after:	3 weeks
Sponsored by:	Spectra Logic Corp
2018-02-23 18:18:42 +00:00

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#
# 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
# 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()
{
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=.*\<UP\>" ifconfig $LAGG
atf_check -o not-match:"flags=.*\<UP\>" ifconfig $TAP0
atf_check -o not-match:"flags=.*\<UP\>" ifconfig $TAP1
# Up the lagg again
ifconfig $LAGG up
atf_check -o match:"flags=.*\<UP\>" ifconfig $LAGG
atf_check -o match:"flags=.*\<UP\>" ifconfig $TAP0
atf_check -o match:"flags=.*\<UP\>" 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 $TAP1
}
updown_cleanup()
{
cleanup_tap_and_lagg
}
# Check for lock-order reversals. For best results, this test should be run
# last.
atf_test_case witness
witness_head()
{
atf_set "descr" "Check witness(4) for lock-order reversals in if_lagg"
}
witness_body()
{
if [ `sysctl -n debug.witness.watch` -ne 1 ]; then
atf_skip "witness(4) is not enabled"
fi
if `sysctl -n debug.witness.badstacks | grep -q 'at lagg_'`; then
sysctl debug.witness.badstacks
atf_fail "Lock-order reversals involving if_lagg.c detected"
fi
}
atf_init_test_cases()
{
atf_add_test_case create
atf_add_test_case create_destroy_stress
atf_add_test_case lacp_linkstate_destroy_stress
atf_add_test_case set_ether
atf_add_test_case status_stress
atf_add_test_case up_destroy_stress
atf_add_test_case updown
# For best results, keep the witness test last
atf_add_test_case witness
}
# Creates a new tap(4) interface, registers it for cleanup, and echoes it
get_tap()
{
local TAPN=0
while ! ifconfig tap${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
}