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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)
#
# $FreeBSD$
# All of the tests in this file requires the test-suite config variable "fibs"
# to be defined to a space-delimited list of FIBs that may be used for testing.
# arpresolve should check the interface fib for routes to a target when
# creating an ARP table entry. This is a regression for kern/167947, where
# arpresolve only checked the default route.
#
# Outline:
# Create two tap(4) interfaces
# Simulate a crossover cable between them by using net/socat
# Use nping (from security/nmap) to send an ICMP echo request from one
# interface to the other, spoofing the source IP. The source IP must be
# spoofed, or else it will already have an entry in the arp table.
# Check whether an arp entry exists for the spoofed IP
atf_test_case arpresolve_checks_interface_fib cleanup
arpresolve_checks_interface_fib_head()
{
atf_set "descr" "arpresolve should check the interface fib, not the default fib, for routes"
atf_set "require.user" "root"
atf_set "require.config" "fibs"
atf_set "require.progs" "socat nping"
}
arpresolve_checks_interface_fib_body()
{
# Configure the TAP interfaces to use a RFC5737 nonrouteable addresses
# and a non-default fib
ADDR0="192.0.2.2"
ADDR1="192.0.2.3"
SUBNET="192.0.2.0"
# Due to bug TBD (regressed by multiple_fibs_on_same_subnet) we need
# diffferent subnet masks, or FIB1 won't have a subnet route.
MASK0="24"
MASK1="25"
# Spoof a MAC that is reserved per RFC7042
SPOOF_ADDR="192.0.2.4"
SPOOF_MAC="00:00:5E:00:53:00"
# Check system configuration
if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
atf_skip "This test requires net.add_addr_allfibs=0"
fi
get_fibs 2
# Configure TAP interfaces
setup_tap "$FIB0" ${ADDR0} ${MASK0}
TAP0=$TAP
setup_tap "$FIB1" ${ADDR1} ${MASK1}
TAP1=$TAP
# Simulate a crossover cable
socat /dev/${TAP0} /dev/${TAP1} &
SOCAT_PID=$!
echo ${SOCAT_PID} >> "processes_to_kill"
# Send an ICMP echo request with a spoofed source IP
setfib 2 nping -c 1 -e ${TAP0} -S ${SPOOF_ADDR} \
--source-mac ${SPOOF_MAC} --icmp --icmp-type "echo-request" \
--icmp-code 0 --icmp-id 0xdead --icmp-seq 1 --data 0xbeef \
${ADDR1}
# For informational and debugging purposes only, look for the
# characteristic error message
dmesg | grep "llinfo.*${SPOOF_ADDR}"
# Check that the ARP entry exists
atf_check -o match:"${SPOOF_ADDR}.*expires" setfib 3 arp ${SPOOF_ADDR}
}
arpresolve_checks_interface_fib_cleanup()
{
for PID in `cat "processes_to_kill"`; do
kill $PID
done
cleanup_tap
}
# Regression test for kern/187549
atf_test_case loopback_and_network_routes_on_nondefault_fib cleanup
loopback_and_network_routes_on_nondefault_fib_head()
{
atf_set "descr" "When creating and deleting loopback routes, use the interface's fib"
atf_set "require.user" "root"
atf_set "require.config" "fibs"
}
loopback_and_network_routes_on_nondefault_fib_body()
{
# Configure the TAP interface to use an RFC5737 nonrouteable address
# and a non-default fib
ADDR="192.0.2.2"
SUBNET="192.0.2.0"
MASK="24"
# Check system configuration
if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
atf_skip "This test requires net.add_addr_allfibs=0"
fi
get_fibs 1
# Configure a TAP interface
setup_tap ${FIB0} ${ADDR} ${MASK}
# Check whether the host route exists in only the correct FIB
setfib ${FIB0} netstat -rn -f inet | grep -q "^${ADDR}.*UHS.*lo0"
if [ 0 -ne $? ]; then
setfib ${FIB0} netstat -rn -f inet
atf_fail "Host route did not appear in the correct FIB"
fi
setfib 0 netstat -rn -f inet | grep -q "^${ADDR}.*UHS.*lo0"
if [ 0 -eq $? ]; then
setfib 0 netstat -rn -f inet
atf_fail "Host route appeared in the wrong FIB"
fi
# Check whether the network route exists in only the correct FIB
setfib ${FIB0} netstat -rn -f inet | \
grep -q "^${SUBNET}/${MASK}.*${TAPD}"
if [ 0 -ne $? ]; then
setfib ${FIB0} netstat -rn -f inet
atf_fail "Network route did not appear in the correct FIB"
fi
setfib 0 netstat -rn -f inet | \
grep -q "^${SUBNET}/${MASK}.*${TAPD}"
if [ 0 -eq $? ]; then
setfib ${FIB0} netstat -rn -f inet
atf_fail "Network route appeared in the wrong FIB"
fi
}
loopback_and_network_routes_on_nondefault_fib_cleanup()
{
cleanup_tap
}
# Regression test for kern/187552
atf_test_case default_route_with_multiple_fibs_on_same_subnet cleanup
default_route_with_multiple_fibs_on_same_subnet_head()
{
atf_set "descr" "Multiple interfaces on the same subnet but with different fibs can both have default routes"
atf_set "require.user" "root"
atf_set "require.config" "fibs"
}
default_route_with_multiple_fibs_on_same_subnet_body()
{
# Configure the TAP interfaces to use a RFC5737 nonrouteable addresses
# and a non-default fib
ADDR0="192.0.2.2"
ADDR1="192.0.2.3"
GATEWAY="192.0.2.1"
SUBNET="192.0.2.0"
MASK="24"
# Check system configuration
if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
atf_skip "This test requires net.add_addr_allfibs=0"
fi
get_fibs 2
# Configure TAP interfaces
setup_tap "$FIB0" ${ADDR0} ${MASK}
TAP0=$TAP
setup_tap "$FIB1" ${ADDR1} ${MASK}
TAP1=$TAP
# Attempt to add default routes
setfib ${FIB0} route add default ${GATEWAY}
setfib ${FIB1} route add default ${GATEWAY}
# Verify that the default route exists for both fibs, with their
# respective interfaces.
atf_check -o match:"^default.*${TAP0}$" \
setfib ${FIB0} netstat -rn -f inet
atf_check -o match:"^default.*${TAP1}$" \
setfib ${FIB1} netstat -rn -f inet
}
default_route_with_multiple_fibs_on_same_subnet_cleanup()
{
cleanup_tap
}
# Regression test for PR kern/189089
# Create two tap interfaces and assign them both the same IP address but with
# different netmasks, and both on the default FIB. Then remove one's IP
# address. Hopefully the machine won't panic.
atf_test_case same_ip_multiple_ifaces_fib0 cleanup
same_ip_multiple_ifaces_fib0_head()
{
atf_set "descr" "Can remove an IP alias from an interface when the same IP is also assigned to another interface."
atf_set "require.user" "root"
atf_set "require.config" "fibs"
}
same_ip_multiple_ifaces_fib0_body()
{
ADDR="192.0.2.2"
MASK0="24"
MASK1="32"
# Unlike most of the tests in this file, this is applicable regardless
# of net.add_addr_allfibs
# Setup the interfaces, then remove one alias. It should not panic.
setup_tap 0 ${ADDR} ${MASK0}
TAP0=${TAP}
setup_tap 0 ${ADDR} ${MASK1}
TAP1=${TAP}
ifconfig ${TAP1} -alias ${ADDR}
# Do it again, in the opposite order. It should not panic.
setup_tap 0 ${ADDR} ${MASK0}
TAP0=${TAP}
setup_tap 0 ${ADDR} ${MASK1}
TAP1=${TAP}
ifconfig ${TAP0} -alias ${ADDR}
}
same_ip_multiple_ifaces_fib0_cleanup()
{
cleanup_tap
}
# Regression test for kern/187550
atf_test_case subnet_route_with_multiple_fibs_on_same_subnet cleanup
subnet_route_with_multiple_fibs_on_same_subnet_head()
{
atf_set "descr" "Multiple FIBs can have subnet routes for the same subnet"
atf_set "require.user" "root"
atf_set "require.config" "fibs"
}
subnet_route_with_multiple_fibs_on_same_subnet_body()
{
# Configure the TAP interfaces to use a RFC5737 nonrouteable addresses
# and a non-default fib
ADDR0="192.0.2.2"
ADDR1="192.0.2.3"
SUBNET="192.0.2.0"
MASK="24"
# Check system configuration
if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
atf_skip "This test requires net.add_addr_allfibs=0"
fi
get_fibs 2
# Configure TAP interfaces
setup_tap "$FIB0" ${ADDR0} ${MASK}
setup_tap "$FIB1" ${ADDR1} ${MASK}
# Check that a subnet route exists on both fibs
atf_check -o ignore setfib "$FIB0" route get $ADDR1
atf_check -o ignore setfib "$FIB1" route get $ADDR0
}
subnet_route_with_multiple_fibs_on_same_subnet_cleanup()
{
cleanup_tap
}
# Test that source address selection works correctly for UDP packets with
# SO_DONTROUTE set that are sent on non-default FIBs.
# This bug was discovered with "setfib 1 netperf -t UDP_STREAM -H some_host"
# Regression test for kern/187553
#
# The root cause was that ifa_ifwithnet() did not have a fib argument. It
# would return an address from an interface on any FIB that had a subnet route
# for the destination. If more than one were available, it would choose the
# most specific. This is most easily tested by creating a FIB without a
# default route, then trying to send a UDP packet with SO_DONTROUTE set to an
# address which is not routable on that FIB. Absent the fix for this bug,
# in_pcbladdr would choose an interface on any FIB with a default route. With
# the fix, you will get EUNREACH or ENETUNREACH.
atf_test_case udp_dontroute cleanup
udp_dontroute_head()
{
atf_set "descr" "Source address selection for UDP packets with SO_DONTROUTE on non-default FIBs works"
atf_set "require.user" "root"
atf_set "require.config" "fibs"
}
udp_dontroute_body()
{
atf_expect_fail "kern/187553 Source address selection for UDP packets with SO_DONTROUTE uses the default FIB"
# Configure the TAP interface to use an RFC5737 nonrouteable address
# and a non-default fib
ADDR="192.0.2.2"
SUBNET="192.0.2.0"
MASK="24"
# Use a different IP on the same subnet as the target
TARGET="192.0.2.100"
# Check system configuration
if [ 0 != `sysctl -n net.add_addr_allfibs` ]; then
atf_skip "This test requires net.add_addr_allfibs=0"
fi
get_fibs 1
# Configure a TAP interface
setup_tap ${FIB0} ${ADDR} ${MASK}
# Send a UDP packet with SO_DONTROUTE. In the failure case, it will
# return ENETUNREACH
SRCDIR=`atf_get_srcdir`
atf_check -o ignore setfib ${FIB0} ${SRCDIR}/udp_dontroute ${TARGET}
}
udp_dontroute_cleanup()
{
cleanup_tap
}
atf_init_test_cases()
{
atf_add_test_case arpresolve_checks_interface_fib
atf_add_test_case loopback_and_network_routes_on_nondefault_fib
atf_add_test_case default_route_with_multiple_fibs_on_same_subnet
atf_add_test_case same_ip_multiple_ifaces_fib0
atf_add_test_case subnet_route_with_multiple_fibs_on_same_subnet
atf_add_test_case udp_dontroute
}
# Looks up one or more fibs from the configuration data and validates them.
# Returns the results in the env varilables FIB0, FIB1, etc.
# parameter numfibs The number of fibs to lookup
get_fibs()
{
NUMFIBS=$1
net_fibs=`sysctl -n net.fibs`
i=0
while [ $i -lt "$NUMFIBS" ]; do
fib=`atf_config_get "fibs" | \
awk -v i=$(( i + 1 )) '{print $i}'`
echo "fib is ${fib}"
eval FIB${i}=${fib}
if [ "$fib" -ge "$net_fibs" ]; then
atf_skip "The ${i}th configured fib is ${fib}, which is not less than net.fibs, which is ${net_fibs}"
fi
i=$(( $i + 1 ))
done
}
# Creates a new tap(4) interface, registers it for cleanup, and returns the
# name via the environment variable TAP
get_tap()
{
local TAPN=0
while ! ifconfig tap${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 ${TAPD} >> "tap_devices_to_cleanup"
TAP=${TAPD}
}
# Create a tap(4) interface, configure it, and register it for cleanup.
# parameters:
# fib
# IP address
# Netmask in number of bits (eg 24 or 8)
# Return: the tap interface name as the env variable TAP
setup_tap()
{
local FIB=$1
local ADDR=$2
local MASK=$3
get_tap
echo setfib ${FIB} ifconfig $TAP ${ADDR}/${MASK} fib $FIB
setfib ${FIB} ifconfig $TAP ${ADDR}/${MASK} fib $FIB
}
cleanup_tap()
{
for TAPD in `cat "tap_devices_to_cleanup"`; do
ifconfig ${TAPD} destroy
done
}
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