Commit 45315673 authored by Petr Machata's avatar Petr Machata Committed by David S. Miller

selftests: forwarding: Test changes in mirror-to-gretap

These tests set up mirroring in a situation that the configuration is
incorrect, i.e. mirrored packets, if any, are not supposed to reach
destination tunnel device. Then the configuration is rectified and
mirroring is checked to have started working.
Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Reviewed-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ff68e6fb
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# This test uses standard topology for testing gretap. See
# mirror_gre_topo_lib.sh for more details.
#
# Test how mirrors to gretap and ip6gretap react to changes to relevant
# configuration.
NUM_NETIFS=6
source lib.sh
source mirror_lib.sh
source mirror_gre_lib.sh
source mirror_gre_topo_lib.sh
setup_prepare()
{
h1=${NETIFS[p1]}
swp1=${NETIFS[p2]}
swp2=${NETIFS[p3]}
h2=${NETIFS[p4]}
swp3=${NETIFS[p5]}
h3=${NETIFS[p6]}
vrf_prepare
mirror_gre_topo_create
# This test downs $swp3, which deletes the configured IPv6 address
# unless this sysctl is set.
local key=net.ipv6.conf.$swp3.keep_addr_on_down
SWP3_KEEP_ADDR_ON_DOWN=$(sysctl -n $key)
sysctl -qw $key=1
ip address add dev $swp3 192.0.2.129/28
ip address add dev $h3 192.0.2.130/28
ip address add dev $swp3 2001:db8:2::1/64
ip address add dev $h3 2001:db8:2::2/64
}
cleanup()
{
pre_cleanup
ip address del dev $h3 2001:db8:2::2/64
ip address del dev $swp3 2001:db8:2::1/64
ip address del dev $h3 192.0.2.130/28
ip address del dev $swp3 192.0.2.129/28
local key=net.ipv6.conf.$swp3.keep_addr_on_down
sysctl -qw $key=$SWP3_KEEP_ADDR_ON_DOWN
mirror_gre_topo_destroy
vrf_cleanup
}
test_span_gre_ttl()
{
local tundev=$1; shift
local type=$1; shift
local prot=$1; shift
local what=$1; shift
RET=0
mirror_install $swp1 ingress $tundev "matchall $tcflags"
tc qdisc add dev $h3 clsact
tc filter add dev $h3 ingress pref 77 prot $prot \
flower ip_ttl 50 action pass
mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 0
ip link set dev $tundev type $type ttl 50
mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 10
ip link set dev $tundev type $type ttl 100
tc filter del dev $h3 ingress pref 77
tc qdisc del dev $h3 clsact
mirror_uninstall $swp1 ingress
log_test "$what: TTL change ($tcflags)"
}
test_span_gre_tun_up()
{
local tundev=$1; shift
local what=$1; shift
RET=0
ip link set dev $tundev down
mirror_install $swp1 ingress $tundev "matchall $tcflags"
fail_test_span_gre_dir $tundev ingress
ip link set dev $tundev up
quick_test_span_gre_dir $tundev ingress
mirror_uninstall $swp1 ingress
log_test "$what: tunnel down/up ($tcflags)"
}
test_span_gre_egress_up()
{
local tundev=$1; shift
local remote_ip=$1; shift
local what=$1; shift
RET=0
ip link set dev $swp3 down
mirror_install $swp1 ingress $tundev "matchall $tcflags"
fail_test_span_gre_dir $tundev ingress
# After setting the device up, wait for neighbor to get resolved so that
# we can expect mirroring to work.
ip link set dev $swp3 up
while true; do
ip neigh sh dev $swp3 $remote_ip nud reachable |
grep -q ^
if [[ $? -ne 0 ]]; then
sleep 1
else
break
fi
done
quick_test_span_gre_dir $tundev ingress
mirror_uninstall $swp1 ingress
log_test "$what: egress down/up ($tcflags)"
}
test_span_gre_remote_ip()
{
local tundev=$1; shift
local type=$1; shift
local correct_ip=$1; shift
local wrong_ip=$1; shift
local what=$1; shift
RET=0
ip link set dev $tundev type $type remote $wrong_ip
mirror_install $swp1 ingress $tundev "matchall $tcflags"
fail_test_span_gre_dir $tundev ingress
ip link set dev $tundev type $type remote $correct_ip
quick_test_span_gre_dir $tundev ingress
mirror_uninstall $swp1 ingress
log_test "$what: remote address change ($tcflags)"
}
test_all()
{
slow_path_trap_install $swp1 ingress
slow_path_trap_install $swp1 egress
test_span_gre_ttl gt4 gretap ip "mirror to gretap"
test_span_gre_ttl gt6 ip6gretap ipv6 "mirror to ip6gretap"
test_span_gre_tun_up gt4 "mirror to gretap"
test_span_gre_tun_up gt6 "mirror to ip6gretap"
test_span_gre_egress_up gt4 192.0.2.130 "mirror to gretap"
test_span_gre_egress_up gt6 2001:db8:2::2 "mirror to ip6gretap"
test_span_gre_remote_ip gt4 gretap 192.0.2.130 192.0.2.132 "mirror to gretap"
test_span_gre_remote_ip gt6 ip6gretap 2001:db8:2::2 2001:db8:2::4 "mirror to ip6gretap"
slow_path_trap_uninstall $swp1 egress
slow_path_trap_uninstall $swp1 ingress
}
trap cleanup EXIT
setup_prepare
setup_wait
tcflags="skip_hw"
test_all
if ! tc_offload_check; then
echo "WARN: Could not test offloaded functionality"
else
tcflags="skip_sw"
test_all
fi
exit $EXIT_STATUS
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment