#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Test for "tc action mirred egress mirror" when the underlay route points at a
# vlan device on top of a bridge device with vlan filtering (802.1q).
#
# +---------------------+ +---------------------+
# | H1 | | H2 |
# | + $h1 | | $h2 + |
# | | 192.0.2.1/28 | | 192.0.2.2/28 | |
# +-----|---------------+ +---------------|-----+
# | |
# +-----|-------------------------------------------------------------|-----+
# | SW o--> mirred egress mirror dev {gt4,gt6} | |
# | | | |
# | +---|-------------------------------------------------------------|---+ |
# | | + $swp1 br1 $swp2 + | |
# | | | |
# | | + $swp3 | |
# | +---|-----------------------------------------------------------------+ |
# | | | |
# | | + br1.555 |
# | | 192.0.2.130/28 |
# | | 2001:db8:2::2/64 |
# | | |
# | | + gt6 (ip6gretap) + gt4 (gretap) |
# | | : loc=2001:db8:2::1 : loc=192.0.2.129 |
# | | : rem=2001:db8:2::2 : rem=192.0.2.130 |
# | | : ttl=100 : ttl=100 |
# | | : tos=inherit : tos=inherit |
# | | : : |
# +-----|---------------------:----------------------:----------------------+
# | : :
# +-----|---------------------:----------------------:----------------------+
# | H3 + $h3 + h3-gt6 (ip6gretap) + h3-gt4 (gretap) |
# | | loc=2001:db8:2::2 loc=192.0.2.130 |
# | + $h3.555 rem=2001:db8:2::1 rem=192.0.2.129 |
# | 192.0.2.130/28 ttl=100 ttl=100 |
# | 2001:db8:2::2/64 tos=inherit tos=inherit |
# | |
# +-------------------------------------------------------------------------+
ALL_TESTS="
test_gretap
test_ip6gretap
test_gretap_forbidden_cpu
test_ip6gretap_forbidden_cpu
test_gretap_forbidden_egress
test_ip6gretap_forbidden_egress
test_gretap_untagged_egress
test_ip6gretap_untagged_egress
test_gretap_fdb_roaming
test_ip6gretap_fdb_roaming
test_gretap_stp
test_ip6gretap_stp
"
NUM_NETIFS=6
source lib.sh
source mirror_lib.sh
source mirror_gre_lib.sh
source mirror_gre_topo_lib.sh
require_command $ARPING
h3_addr_add_del()
{
local add_del=$1; shift
local dev=$1; shift
ip addr $add_del dev $dev 192.0.2.130/28
ip addr $add_del dev $dev 2001:db8:2::2/64
}
setup_prepare()
{
h1=${NETIFS[p1]}
swp1=${NETIFS[p2]}
swp2=${NETIFS[p3]}
h2=${NETIFS[p4]}
swp3=${NETIFS[p5]}
h3=${NETIFS[p6]}
# gt4's remote address is at $h3.555, not $h3. Thus the packets arriving
# directly to $h3 for test_gretap_untagged_egress() are rejected by
# rp_filter and the test spuriously fails.
sysctl_set net.ipv4.conf.all.rp_filter 0
sysctl_set net.ipv4.conf.$h3.rp_filter 0
vrf_prepare
mirror_gre_topo_create
vlan_create br1 555 "" 192.0.2.129/32 2001:db8:2::1/128
bridge vlan add dev br1 vid 555 self
ip route rep 192.0.2.130/32 dev br1.555
ip -6 route rep 2001:db8:2::2/128 dev br1.555
vlan_create $h3 555 v$h3
h3_addr_add_del add $h3.555
ip link set dev $swp3 master br1
bridge vlan add dev $swp3 vid 555
bridge vlan add dev $swp2 vid 555
}
cleanup()
{
pre_cleanup
ip link set dev $swp2 nomaster
ip link set dev $swp3 nomaster
h3_addr_add_del del $h3.555
vlan_destroy $h3 555
vlan_destroy br1 555
mirror_gre_topo_destroy
vrf_cleanup
sysctl_restore net.ipv4.conf.$h3.rp_filter
sysctl_restore net.ipv4.conf.all.rp_filter
}
test_vlan_match()
{
local tundev=$1; shift
local vlan_match=$1; shift
local what=$1; shift
full_test_span_gre_dir_vlan $tundev ingress "$vlan_match" 8 0 "$what"
full_test_span_gre_dir_vlan $tundev egress "$vlan_match" 0 8 "$what"
}
test_gretap()
{
test_vlan_match gt4 'skip_hw vlan_id 555 vlan_ethtype ip' \
"mirror to gretap"
}
test_ip6gretap()
{
test_vlan_match gt6 'skip_hw vlan_id 555 vlan_ethtype ipv6' \
"mirror to ip6gretap"
}
test_span_gre_forbidden_cpu()
{
local tundev=$1; shift
local what=$1; shift
RET=0
# Run the pass-test first, to prime neighbor table.
mirror_install $swp1 ingress $tundev "matchall"
quick_test_span_gre_dir $tundev
# Now forbid the VLAN at the bridge and see it fail.
bridge vlan del dev br1 vid 555 self
sleep 1
fail_test_span_gre_dir $tundev
bridge vlan add dev br1 vid 555 self
sleep 1
quick_test_span_gre_dir $tundev
mirror_uninstall $swp1 ingress
log_test "$what: vlan forbidden at a bridge"
}
test_gretap_forbidden_cpu()
{
test_span_gre_forbidden_cpu gt4 "mirror to gretap"
}
test_ip6gretap_forbidden_cpu()
{
test_span_gre_forbidden_cpu gt6 "mirror to ip6gretap"
}
test_span_gre_forbidden_egress()
{
local tundev=$1; shift
local what=$1; shift
RET=0
mirror_install $swp1 ingress $tundev "matchall"
quick_test_span_gre_dir $tundev
bridge vlan del dev $swp3 vid 555
sleep 1
fail_test_span_gre_dir $tundev
bridge vlan add dev $swp3 vid 555
# Re-prime FDB
$ARPING -I br1.555 192.0.2.130 -fqc 1
sleep 1
quick_test_span_gre_dir $tundev
mirror_uninstall $swp1 ingress
log_test "$what: vlan forbidden at a bridge egress"
}
test_gretap_forbidden_egress()
{
test_span_gre_forbidden_egress gt4 "mirror to gretap"
}
test_ip6gretap_forbidden_egress()
{
test_span_gre_forbidden_egress gt6 "mirror to ip6gretap"
}
test_span_gre_untagged_egress()
{
local tundev=$1; shift
local ul_proto=$1; shift
local what=$1; shift
RET=0
mirror_install $swp1 ingress $tundev "matchall"
quick_test_span_gre_dir $tundev
quick_test_span_vlan_dir $h3 555 "$ul_proto"
h3_addr_add_del del $h3.555
bridge vlan add dev $swp3 vid 555 pvid untagged
h3_addr_add_del add $h3
sleep 5
quick_test_span_gre_dir $tundev
fail_test_span_vlan_dir $h3 555 "$ul_proto"
h3_addr_add_del del $h3
bridge vlan add dev $swp3 vid 555
h3_addr_add_del add $h3.555
sleep 5
quick_test_span_gre_dir $tundev
quick_test_span_vlan_dir $h3 555 "$ul_proto"
mirror_uninstall $swp1 ingress
log_test "$what: vlan untagged at a bridge egress"
}
test_gretap_untagged_egress()
{
test_span_gre_untagged_egress gt4 ip "mirror to gretap"
}
test_ip6gretap_untagged_egress()
{
test_span_gre_untagged_egress gt6 ipv6 "mirror to ip6gretap"
}
test_span_gre_fdb_roaming()
{
local tundev=$1; shift
local what=$1; shift
local h3mac=$(mac_get $h3)
RET=0
mirror_install $swp1 ingress $tundev "matchall"
quick_test_span_gre_dir $tundev
while ((RET == 0)); do
bridge fdb del dev $swp3 $h3mac vlan 555 master 2>/dev/null
bridge fdb add dev $swp2 $h3mac vlan 555 master static
sleep 1
fail_test_span_gre_dir $tundev
if ! bridge fdb sh dev $swp2 vlan 555 master \
| grep -q $h3mac; then
printf "TEST: %-60s [RETRY]\n" \
"$what: MAC roaming"
# ARP or ND probably reprimed the FDB while the test
# was running. We would get a spurious failure.
RET=0
continue
fi
break
done
bridge fdb del dev $swp2 $h3mac vlan 555 master 2>/dev/null
# Re-prime FDB
$ARPING -I br1.555 192.0.2.130 -fqc 1
sleep 1
quick_test_span_gre_dir $tundev
mirror_uninstall $swp1 ingress
log_test "$what: MAC roaming"
}
test_gretap_fdb_roaming()
{
test_span_gre_fdb_roaming gt4 "mirror to gretap"
}
test_ip6gretap_fdb_roaming()
{
test_span_gre_fdb_roaming gt6 "mirror to ip6gretap"
}
test_gretap_stp()
{
full_test_span_gre_stp gt4 $swp3 "mirror to gretap"
}
test_ip6gretap_stp()
{
full_test_span_gre_stp gt6 $swp3 "mirror to ip6gretap"
}
trap cleanup EXIT
setup_prepare
setup_wait
tests_run
exit $EXIT_STATUS
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