selftests: mlxsw: Add mlxsw-specific test for mirror to gretap

Test several aspects of offloading mirror to gretap and ip6gretap
netdevices that are specific to mlxsw, such as requirements for TTL and
TOS values.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2018-07-05 21:09:04 +02:00 committed by David S. Miller
parent e88bc0f25b
commit 1ba97e6725

View File

@ -0,0 +1,217 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# This test uses standard topology for testing gretap. See
# ../../../net/forwarding/mirror_gre_topo_lib.sh for more details.
#
# Test offloading various features of offloading gretap mirrors specific to
# mlxsw.
lib_dir=$(dirname $0)/../../../net/forwarding
NUM_NETIFS=6
source $lib_dir/lib.sh
source $lib_dir/mirror_lib.sh
source $lib_dir/mirror_gre_lib.sh
source $lib_dir/mirror_gre_topo_lib.sh
setup_keyful()
{
tunnel_create gt6-key ip6gretap 2001:db8:3::1 2001:db8:3::2 \
ttl 100 tos inherit allow-localremote \
key 1234
tunnel_create h3-gt6-key ip6gretap 2001:db8:3::2 2001:db8:3::1 \
key 1234
ip link set h3-gt6-key vrf v$h3
matchall_sink_create h3-gt6-key
ip address add dev $swp3 2001:db8:3::1/64
ip address add dev $h3 2001:db8:3::2/64
}
cleanup_keyful()
{
ip address del dev $h3 2001:db8:3::2/64
ip address del dev $swp3 2001:db8:3::1/64
tunnel_destroy h3-gt6-key
tunnel_destroy gt6-key
}
setup_soft()
{
# Set up a topology for testing underlay routes that point at an
# unsupported soft device.
tunnel_create gt6-soft ip6gretap 2001:db8:4::1 2001:db8:4::2 \
ttl 100 tos inherit allow-localremote
tunnel_create h3-gt6-soft ip6gretap 2001:db8:4::2 2001:db8:4::1
ip link set h3-gt6-soft vrf v$h3
matchall_sink_create h3-gt6-soft
ip link add name v1 type veth peer name v2
ip link set dev v1 up
ip address add dev v1 2001:db8:4::1/64
ip link set dev v2 vrf v$h3
ip link set dev v2 up
ip address add dev v2 2001:db8:4::2/64
}
cleanup_soft()
{
ip link del dev v1
tunnel_destroy h3-gt6-soft
tunnel_destroy gt6-soft
}
setup_prepare()
{
h1=${NETIFS[p1]}
swp1=${NETIFS[p2]}
swp2=${NETIFS[p3]}
h2=${NETIFS[p4]}
swp3=${NETIFS[p5]}
h3=${NETIFS[p6]}
vrf_prepare
mirror_gre_topo_create
ip address add dev $swp3 2001:db8:2::1/64
ip address add dev $h3 2001:db8:2::2/64
ip address add dev $swp3 192.0.2.129/28
ip address add dev $h3 192.0.2.130/28
setup_keyful
setup_soft
}
cleanup()
{
pre_cleanup
cleanup_soft
cleanup_keyful
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
mirror_gre_topo_destroy
vrf_cleanup
}
test_span_gre_ttl_inherit()
{
local tundev=$1; shift
local type=$1; shift
local what=$1; shift
RET=0
ip link set dev $tundev type $type ttl inherit
mirror_install $swp1 ingress $tundev "matchall $tcflags"
fail_test_span_gre_dir $tundev ingress
ip link set dev $tundev type $type ttl 100
quick_test_span_gre_dir $tundev ingress
mirror_uninstall $swp1 ingress
log_test "$what: no offload on TTL of inherit ($tcflags)"
}
test_span_gre_tos_fixed()
{
local tundev=$1; shift
local type=$1; shift
local what=$1; shift
RET=0
ip link set dev $tundev type $type tos 0x10
mirror_install $swp1 ingress $tundev "matchall $tcflags"
fail_test_span_gre_dir $tundev ingress
ip link set dev $tundev type $type tos inherit
quick_test_span_gre_dir $tundev ingress
mirror_uninstall $swp1 ingress
log_test "$what: no offload on a fixed TOS ($tcflags)"
}
test_span_failable()
{
local should_fail=$1; shift
local tundev=$1; shift
local what=$1; shift
RET=0
mirror_install $swp1 ingress $tundev "matchall $tcflags"
if ((should_fail)); then
fail_test_span_gre_dir $tundev ingress
else
quick_test_span_gre_dir $tundev ingress
fi
mirror_uninstall $swp1 ingress
log_test "$what: should_fail=$should_fail ($tcflags)"
}
test_failable()
{
local should_fail=$1; shift
test_span_failable $should_fail gt6-key "mirror to keyful gretap"
test_span_failable $should_fail gt6-soft "mirror to gretap w/ soft underlay"
}
test_sw()
{
slow_path_trap_install $swp1 ingress
slow_path_trap_install $swp1 egress
test_failable 0
slow_path_trap_uninstall $swp1 egress
slow_path_trap_uninstall $swp1 ingress
}
test_hw()
{
test_failable 1
test_span_gre_tos_fixed gt4 gretap "mirror to gretap"
test_span_gre_tos_fixed gt6 ip6gretap "mirror to ip6gretap"
test_span_gre_ttl_inherit gt4 gretap "mirror to gretap"
test_span_gre_ttl_inherit gt6 ip6gretap "mirror to ip6gretap"
}
trap cleanup EXIT
setup_prepare
setup_wait
if ! tc_offload_check; then
check_err 1 "Could not test offloaded functionality"
log_test "mlxsw-specific tests for mirror to gretap"
exit
fi
tcflags="skip_hw"
test_sw
tcflags="skip_sw"
test_hw
exit $EXIT_STATUS