freebsd-dev/tests/sys/net/if_bridge_test.sh
Mark Johnston 121e120883 bridge tests: Tests using pft_ping.py require scapy
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
2022-08-04 09:41:52 -04:00

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# $FreeBSD$
#
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
#
# Copyright (c) 2020 The FreeBSD Foundation
#
# This software was developed by Kristof Provost under sponsorship
# from the FreeBSD Foundation.
#
# 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.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
. $(atf_get_srcdir)/../common/vnet.subr
atf_test_case "bridge_transmit_ipv4_unicast" "cleanup"
bridge_transmit_ipv4_unicast_head()
{
atf_set descr 'bridge_transmit_ipv4_unicast bridging test'
atf_set require.user root
}
bridge_transmit_ipv4_unicast_body()
{
vnet_init
epair_alcatraz=$(vnet_mkepair)
epair_singsing=$(vnet_mkepair)
vnet_mkjail alcatraz ${epair_alcatraz}b
vnet_mkjail singsing ${epair_singsing}b
jexec alcatraz ifconfig ${epair_alcatraz}b 192.0.2.1/24 up
jexec singsing ifconfig ${epair_singsing}b 192.0.2.2/24 up
bridge=$(vnet_mkbridge)
ifconfig ${bridge} up
ifconfig ${epair_alcatraz}a up
ifconfig ${epair_singsing}a up
ifconfig ${bridge} addm ${epair_alcatraz}a
ifconfig ${bridge} addm ${epair_singsing}a
atf_check -s exit:0 -o ignore jexec alcatraz ping -c 3 -t 1 192.0.2.2
atf_check -s exit:0 -o ignore jexec singsing ping -c 3 -t 1 192.0.2.1
}
bridge_transmit_ipv4_unicast_cleanup()
{
vnet_cleanup
}
atf_test_case "stp" "cleanup"
stp_head()
{
atf_set descr 'Spanning tree test'
atf_set require.user root
}
stp_body()
{
vnet_init
epair_one=$(vnet_mkepair)
epair_two=$(vnet_mkepair)
bridge_a=$(vnet_mkbridge)
bridge_b=$(vnet_mkbridge)
vnet_mkjail a ${bridge_a} ${epair_one}a ${epair_two}a
vnet_mkjail b ${bridge_b} ${epair_one}b ${epair_two}b
jexec a ifconfig ${epair_one}a up
jexec a ifconfig ${epair_two}a up
jexec a ifconfig ${bridge_a} addm ${epair_one}a
jexec a ifconfig ${bridge_a} addm ${epair_two}a
jexec b ifconfig ${epair_one}b up
jexec b ifconfig ${epair_two}b up
jexec b ifconfig ${bridge_b} addm ${epair_one}b
jexec b ifconfig ${bridge_b} addm ${epair_two}b
jexec a ifconfig ${bridge_a} 192.0.2.1/24
# Enable spanning tree
jexec a ifconfig ${bridge_a} stp ${epair_one}a
jexec a ifconfig ${bridge_a} stp ${epair_two}a
jexec b ifconfig ${bridge_b} stp ${epair_one}b
jexec b ifconfig ${bridge_b} stp ${epair_two}b
jexec b ifconfig ${bridge_b} up
jexec a ifconfig ${bridge_a} up
# Give STP time to do its thing
sleep 5
a_discard=$(jexec a ifconfig ${bridge_a} | grep discarding)
b_discard=$(jexec b ifconfig ${bridge_b} | grep discarding)
if [ -z "${a_discard}" ] && [ -z "${b_discard}" ]
then
atf_fail "STP failed to detect bridging loop"
fi
# We must also have at least some forwarding interfaces
a_forwarding=$(jexec a ifconfig ${bridge_a} | grep forwarding)
b_forwarding=$(jexec b ifconfig ${bridge_b} | grep forwarding)
if [ -z "${a_forwarding}" ] && [ -z "${b_forwarding}" ]
then
atf_fail "STP failed to detect bridging loop"
fi
}
stp_cleanup()
{
vnet_cleanup
}
atf_test_case "stp_vlan" "cleanup"
stp_vlan_head()
{
atf_set descr 'Spanning tree on VLAN test'
atf_set require.user root
}
stp_vlan_body()
{
vnet_init
epair_one=$(vnet_mkepair)
epair_two=$(vnet_mkepair)
bridge_a=$(vnet_mkbridge)
bridge_b=$(vnet_mkbridge)
vnet_mkjail a ${bridge_a} ${epair_one}a ${epair_two}a
vnet_mkjail b ${bridge_b} ${epair_one}b ${epair_two}b
jexec a ifconfig ${epair_one}a up
jexec a ifconfig ${epair_two}a up
vlan_a_one=$(jexec a ifconfig vlan create vlandev ${epair_one}a vlan 42)
vlan_a_two=$(jexec a ifconfig vlan create vlandev ${epair_two}a vlan 42)
jexec a ifconfig ${vlan_a_one} up
jexec a ifconfig ${vlan_a_two} up
jexec a ifconfig ${bridge_a} addm ${vlan_a_one}
jexec a ifconfig ${bridge_a} addm ${vlan_a_two}
jexec b ifconfig ${epair_one}b up
jexec b ifconfig ${epair_two}b up
vlan_b_one=$(jexec b ifconfig vlan create vlandev ${epair_one}b vlan 42)
vlan_b_two=$(jexec b ifconfig vlan create vlandev ${epair_two}b vlan 42)
jexec b ifconfig ${vlan_b_one} up
jexec b ifconfig ${vlan_b_two} up
jexec b ifconfig ${bridge_b} addm ${vlan_b_one}
jexec b ifconfig ${bridge_b} addm ${vlan_b_two}
jexec a ifconfig ${bridge_a} 192.0.2.1/24
# Enable spanning tree
jexec a ifconfig ${bridge_a} stp ${vlan_a_one}
jexec a ifconfig ${bridge_a} stp ${vlan_a_two}
jexec b ifconfig ${bridge_b} stp ${vlan_b_one}
jexec b ifconfig ${bridge_b} stp ${vlan_b_two}
jexec b ifconfig ${bridge_b} up
jexec a ifconfig ${bridge_a} up
# Give STP time to do its thing
sleep 5
a_discard=$(jexec a ifconfig ${bridge_a} | grep discarding)
b_discard=$(jexec b ifconfig ${bridge_b} | grep discarding)
if [ -z "${a_discard}" ] && [ -z "${b_discard}" ]
then
atf_fail "STP failed to detect bridging loop"
fi
# We must also have at least some forwarding interfaces
a_forwarding=$(jexec a ifconfig ${bridge_a} | grep forwarding)
b_forwarding=$(jexec b ifconfig ${bridge_b} | grep forwarding)
if [ -z "${a_forwarding}" ] && [ -z "${b_forwarding}" ]
then
atf_fail "STP failed to detect bridging loop"
fi
}
stp_vlan_cleanup()
{
vnet_cleanup
}
atf_test_case "static" "cleanup"
static_head()
{
atf_set descr 'Bridge static address test'
atf_set require.user root
}
static_body()
{
vnet_init
epair=$(vnet_mkepair)
bridge=$(vnet_mkbridge)
vnet_mkjail one ${bridge} ${epair}a
ifconfig ${epair}b up
jexec one ifconfig ${bridge} up
jexec one ifconfig ${epair}a up
jexec one ifconfig ${bridge} addm ${epair}a
# Wrong interface
atf_check -s exit:1 -o ignore -e ignore \
jexec one ifconfig ${bridge} static ${epair}b 00:01:02:03:04:05
# Bad address format
atf_check -s exit:1 -o ignore -e ignore \
jexec one ifconfig ${bridge} static ${epair}a 00:01:02:03:04
# Correct add
atf_check -s exit:0 -o ignore \
jexec one ifconfig ${bridge} static ${epair}a 00:01:02:03:04:05
# List addresses
atf_check -s exit:0 -o ignore \
jexec one ifconfig ${bridge} addr
# Delete with bad address format
atf_check -s exit:1 -o ignore -e ignore \
jexec one ifconfig ${bridge} deladdr 00:01:02:03:04
# Delete with unlisted address
atf_check -s exit:1 -o ignore -e ignore \
jexec one ifconfig ${bridge} deladdr 00:01:02:03:04:06
# Correct delete
atf_check -s exit:0 -o ignore \
jexec one ifconfig ${bridge} deladdr 00:01:02:03:04:05
}
static_cleanup()
{
vnet_cleanup
}
atf_test_case "span" "cleanup"
span_head()
{
atf_set descr 'Bridge span test'
atf_set require.user root
atf_set require.progs scapy
}
span_body()
{
set -x
vnet_init
if [ "$(atf_config_get ci false)" = "true" ]; then
atf_skip "https://bugs.freebsd.org/260461"
fi
epair=$(vnet_mkepair)
epair_span=$(vnet_mkepair)
bridge=$(vnet_mkbridge)
vnet_mkjail one ${bridge} ${epair}a ${epair_span}a
ifconfig ${epair}b up
ifconfig ${epair_span}b up
jexec one ifconfig ${bridge} up
jexec one ifconfig ${epair}a up
jexec one ifconfig ${epair_span}a up
jexec one ifconfig ${bridge} addm ${epair}a
jexec one ifconfig ${bridge} span ${epair_span}a
jexec one ifconfig ${bridge} 192.0.2.1/24
# Send some traffic through the span
jexec one ping -c 1 -t 1 192.0.2.2
# Check that we see the traffic on the span interface
atf_check -s exit:0 \
$(atf_get_srcdir)/../netpfil/common/pft_ping.py \
--sendif ${epair}b \
--to 192.0.2.2 \
--recvif ${epair_span}b
jexec one ifconfig ${bridge} -span ${epair_span}a
# And no more traffic after we remove the span
atf_check -s exit:1 \
$(atf_get_srcdir)/../netpfil/common/pft_ping.py \
--sendif ${epair}b \
--to 192.0.2.2 \
--recvif ${epair_span}b
}
span_cleanup()
{
vnet_cleanup
}
atf_test_case "delete_with_members" "cleanup"
delete_with_members_head()
{
atf_set descr 'Delete a bridge which still has member interfaces'
atf_set require.user root
}
delete_with_members_body()
{
vnet_init
bridge=$(vnet_mkbridge)
epair=$(vnet_mkepair)
ifconfig ${bridge} 192.0.2.1/24 up
ifconfig ${epair}a up
ifconfig ${bridge} addm ${epair}a
ifconfig ${bridge} destroy
}
delete_with_members_cleanup()
{
vnet_cleanup
}
atf_test_case "mac_conflict" "cleanup"
mac_conflict_head()
{
atf_set descr 'Ensure that bridges in different jails get different mac addresses'
atf_set require.user root
}
mac_conflict_body()
{
vnet_init
epair=$(vnet_mkepair)
# Ensure the bridge module is loaded so jails can use it.
tmpbridge=$(vnet_mkbridge)
vnet_mkjail bridge_mac_conflict_one ${epair}a
vnet_mkjail bridge_mac_conflict_two ${epair}b
jexec bridge_mac_conflict_one ifconfig bridge create
jexec bridge_mac_conflict_one ifconfig bridge0 192.0.2.1/24 up \
addm ${epair}a
jexec bridge_mac_conflict_one ifconfig ${epair}a up
jexec bridge_mac_conflict_two ifconfig bridge create
jexec bridge_mac_conflict_two ifconfig bridge0 192.0.2.2/24 up \
addm ${epair}b
jexec bridge_mac_conflict_two ifconfig ${epair}b up
atf_check -s exit:0 -o ignore \
jexec bridge_mac_conflict_one ping -c 3 192.0.2.2
}
mac_conflict_cleanup()
{
vnet_cleanup
}
atf_test_case "inherit_mac" "cleanup"
inherit_mac_head()
{
atf_set descr 'Bridge inherit_mac test, #216510'
atf_set require.user root
}
inherit_mac_body()
{
vnet_init
bridge=$(vnet_mkbridge)
epair=$(vnet_mkepair)
vnet_mkjail one ${bridge} ${epair}a
jexec one sysctl net.link.bridge.inherit_mac=1
# Attempt to provoke the panic described in #216510
jexec one ifconfig ${bridge} 192.0.0.1/24 up
jexec one ifconfig ${bridge} addm ${epair}a
}
inherit_mac_cleanup()
{
vnet_cleanup
}
atf_test_case "stp_validation" "cleanup"
stp_validation_head()
{
atf_set descr 'Check STP validation'
atf_set require.user root
atf_set require.progs scapy
}
stp_validation_body()
{
vnet_init
epair_one=$(vnet_mkepair)
epair_two=$(vnet_mkepair)
bridge=$(vnet_mkbridge)
ifconfig ${bridge} up
ifconfig ${bridge} addm ${epair_one}a addm ${epair_two}a
ifconfig ${bridge} stp ${epair_one}a stp ${epair_two}a
ifconfig ${epair_one}a up
ifconfig ${epair_one}b up
ifconfig ${epair_two}a up
ifconfig ${epair_two}b up
# Wait until the interfaces are no longer discarding
while ifconfig ${bridge} | grep 'state discarding' >/dev/null
do
sleep 1
done
# Now inject invalid STP BPDUs on epair_one and see if they're repeated
# on epair_two
atf_check -s exit:0 \
$(atf_get_srcdir)/stp.py \
--sendif ${epair_one}b \
--recvif ${epair_two}b
}
stp_validation_cleanup()
{
vnet_cleanup
}
atf_test_case "gif" "cleanup"
gif_head()
{
atf_set descr 'gif as a bridge member'
atf_set require.user root
}
gif_body()
{
vnet_init
epair=$(vnet_mkepair)
vnet_mkjail one ${epair}a
vnet_mkjail two ${epair}b
jexec one sysctl net.link.gif.max_nesting=2
jexec two sysctl net.link.gif.max_nesting=2
jexec one ifconfig ${epair}a 192.0.2.1/24 up
jexec two ifconfig ${epair}b 192.0.2.2/24 up
# Tunnel
gif_one=$(jexec one ifconfig gif create)
gif_two=$(jexec two ifconfig gif create)
jexec one ifconfig ${gif_one} tunnel 192.0.2.1 192.0.2.2
jexec one ifconfig ${gif_one} up
jexec two ifconfig ${gif_two} tunnel 192.0.2.2 192.0.2.1
jexec two ifconfig ${gif_two} up
bridge_one=$(jexec one ifconfig bridge create)
bridge_two=$(jexec two ifconfig bridge create)
jexec one ifconfig ${bridge_one} 198.51.100.1/24 up
jexec one ifconfig ${bridge_one} addm ${gif_one}
jexec two ifconfig ${bridge_two} 198.51.100.2/24 up
jexec two ifconfig ${bridge_two} addm ${gif_two}
# Sanity check
atf_check -s exit:0 -o ignore \
jexec one ping -c 1 192.0.2.2
# Test tunnel
atf_check -s exit:0 -o ignore \
jexec one ping -c 1 198.51.100.2
atf_check -s exit:0 -o ignore \
jexec one ping -c 1 -s 1200 198.51.100.2
atf_check -s exit:0 -o ignore \
jexec one ping -c 1 -s 2000 198.51.100.2
# Higher MTU on the tunnel than on the underlying interface
jexec one ifconfig ${epair}a mtu 1000
jexec two ifconfig ${epair}b mtu 1000
atf_check -s exit:0 -o ignore \
jexec one ping -c 1 -s 1200 198.51.100.2
atf_check -s exit:0 -o ignore \
jexec one ping -c 1 -s 2000 198.51.100.2
}
gif_cleanup()
{
vnet_cleanup
}
atf_test_case "mtu" "cleanup"
mtu_head()
{
atf_set descr 'Bridge MTU changes'
atf_set require.user root
}
get_mtu()
{
intf=$1
ifconfig ${intf} ether | awk '$5 == "mtu" { print $6 }'
}
check_mtu()
{
intf=$1
expected=$2
mtu=$(get_mtu $intf)
if [ $mtu -ne $expected ];
then
atf_fail "Expected MTU of $expected on $intf but found $mtu"
fi
}
mtu_body()
{
vnet_init
epair=$(vnet_mkepair)
gif=$(ifconfig gif create)
echo ${gif} >> created_interfaces.lst
bridge=$(vnet_mkbridge)
atf_check -s exit:0 \
ifconfig ${bridge} addm ${epair}a
ifconfig ${gif} mtu 1500
atf_check -s exit:0 \
ifconfig ${bridge} addm ${gif}
# Changing MTU changes it for all member interfaces
atf_check -s exit:0 \
ifconfig ${bridge} mtu 2000
check_mtu ${bridge} 2000
check_mtu ${gif} 2000
check_mtu ${epair}a 2000
# Rejected MTUs mean none of the MTUs change
atf_check -s exit:1 -e ignore \
ifconfig ${bridge} mtu 9000
check_mtu ${bridge} 2000
check_mtu ${gif} 2000
check_mtu ${epair}a 2000
# We're not allowed to change the MTU of a member interface
atf_check -s exit:1 -e ignore \
ifconfig ${epair}a mtu 1900
check_mtu ${epair}a 2000
# Test adding an interface with a different MTU
new_epair=$(vnet_mkepair)
check_mtu ${new_epair}a 1500
atf_check -s exit:0 -e ignore \
ifconfig ${bridge} addm ${new_epair}a
check_mtu ${bridge} 2000
check_mtu ${gif} 2000
check_mtu ${epair}a 2000
check_mtu ${new_epair}a 2000
}
mtu_cleanup()
{
vnet_cleanup
}
atf_init_test_cases()
{
atf_add_test_case "bridge_transmit_ipv4_unicast"
atf_add_test_case "stp"
atf_add_test_case "stp_vlan"
atf_add_test_case "static"
atf_add_test_case "span"
atf_add_test_case "inherit_mac"
atf_add_test_case "delete_with_members"
atf_add_test_case "mac_conflict"
atf_add_test_case "stp_validation"
atf_add_test_case "gif"
atf_add_test_case "mtu"
}