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selftests: forwarding: Add MPLS L2VPN test

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Connect hosts H1 and H2 using two intermediate encapsulation routers
(LER1 and LER2). These routers encapsulate traffic from the hosts,
including the original Ethernet header, into MPLS.

Use ping to test reachability between H1 and H2.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/625f5c1aafa3a8085f8d3e082d680a82e16ffbaa.1606918980.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Guillaume Nault 2020-12-02 15:35:43 +01:00 committed by Jakub Kicinski
parent 0911d463b3
commit 41fdfffd57
3 changed files with 196 additions and 0 deletions
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1
tools/testing/selftests/net/forwarding/Makefile
View File

@ -48,6 +48,7 @@ TEST_PROGS = bridge_igmp.sh \
tc_chains.sh \
tc_flower_router.sh \
tc_flower.sh \
tc_mpls_l2vpn.sh \
tc_shblocks.sh \
tc_vlan_modify.sh \
vxlan_asymmetric.sh \

3
tools/testing/selftests/net/forwarding/config
View File

@ -6,6 +6,9 @@ CONFIG_IPV6_MULTIPLE_TABLES=y
CONFIG_NET_VRF=m
CONFIG_BPF_SYSCALL=y
CONFIG_CGROUP_BPF=y
CONFIG_NET_ACT_MIRRED=m
CONFIG_NET_ACT_MPLS=m
CONFIG_NET_ACT_VLAN=m
CONFIG_NET_CLS_FLOWER=m
CONFIG_NET_SCH_INGRESS=m
CONFIG_NET_ACT_GACT=m

192
tools/testing/selftests/net/forwarding/tc_mpls_l2vpn.sh Executable file
View File

@ -0,0 +1,192 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# +-----------------------+
# | H1 (v$h1) |
# | 192.0.2.1/24 |
# | 2001:db8::1/124 |
# | + $h1 |
# +-----------------|-----+
# |
# | (Plain Ethernet traffic)
# |
# +-----------------|-----------------------------------------+
# | LER1 + $edge1 |
# | -ingress: |
# | -encapsulate Ethernet into MPLS |
# | -add outer Ethernet header |
# | -redirect to $mpls1 (egress) |
# | |
# | + $mpls1 |
# | | -ingress: |
# | | -remove outer Ethernet header |
# | | -remove MPLS header |
# | | -redirect to $edge1 (egress) |
# +-----------------|-----------------------------------------+
# |
# | (Ethernet over MPLS traffic)
# |
# +-----------------|-----------------------------------------+
# | LER2 + $mpls2 |
# | -ingress: |
# | -remove outer Ethernet header |
# | -remove MPLS header |
# | -redirect to $edge2 (egress) |
# | |
# | + $edge2 |
# | | -ingress: |
# | | -encapsulate Ethernet into MPLS |
# | | -add outer Ethernet header |
# | | -redirect to $mpls2 (egress) |
# +-----------------|-----------------------------------------|
# |
# | (Plain Ethernet traffic)
# |
# +-----------------|-----+
# | H2 (v$h2) | |
# | + $h2 |
# | 192.0.2.2/24 |
# | 2001:db8::2/124 |
# +-----------------------+
#
# LER1 and LER2 logically represent two different routers. However, no VRF is
# created for them, as they don't do any IP routing.
ALL_TESTS="mpls_forward_eth"
NUM_NETIFS=6
source lib.sh
h1_create()
{
simple_if_init $h1 192.0.2.1/24 2001:db8::1/124
}
h1_destroy()
{
simple_if_fini $h1 192.0.2.1/24 2001:db8::1/124
}
h2_create()
{
simple_if_init $h2 192.0.2.2/24 2001:db8::2/124
}
h2_destroy()
{
simple_if_fini $h2 192.0.2.2/24 2001:db8::2/124
}
ler1_create()
{
tc qdisc add dev $edge1 ingress
tc filter add dev $edge1 ingress \
matchall \
action mpls mac_push label 102 \
action vlan push_eth dst_mac $mpls2mac src_mac $mpls1mac \
action mirred egress redirect dev $mpls1
ip link set dev $edge1 up
tc qdisc add dev $mpls1 ingress
tc filter add dev $mpls1 ingress \
protocol mpls_uc \
flower mpls_label 101 \
action vlan pop_eth \
action mpls pop protocol teb \
action mirred egress redirect dev $edge1
ip link set dev $mpls1 up
}
ler1_destroy()
{
ip link set dev $mpls1 down
tc qdisc del dev $mpls1 ingress
ip link set dev $edge1 down
tc qdisc del dev $edge1 ingress
}
ler2_create()
{
tc qdisc add dev $edge2 ingress
tc filter add dev $edge2 ingress \
matchall \
action mpls mac_push label 101 \
action vlan push_eth dst_mac $mpls1mac src_mac $mpls2mac \
action mirred egress redirect dev $mpls2
ip link set dev $edge2 up
tc qdisc add dev $mpls2 ingress
tc filter add dev $mpls2 ingress \
protocol mpls_uc \
flower mpls_label 102 \
action vlan pop_eth \
action mpls pop protocol teb \
action mirred egress redirect dev $edge2
ip link set dev $mpls2 up
}
ler2_destroy()
{
ip link set dev $mpls2 down
tc qdisc del dev $mpls2 ingress
ip link set dev $edge2 down
tc qdisc del dev $edge2 ingress
}
mpls_forward_eth()
{
ping_test $h1 192.0.2.2
ping6_test $h1 2001:db8::2
}
setup_prepare()
{
h1=${NETIFS[p1]}
edge1=${NETIFS[p2]}
mpls1=${NETIFS[p3]}
mpls2=${NETIFS[p4]}
edge2=${NETIFS[p5]}
h2=${NETIFS[p6]}
mpls1mac=$(mac_get $mpls1)
mpls2mac=$(mac_get $mpls2)
vrf_prepare
h1_create
h2_create
ler1_create
ler2_create
}
cleanup()
{
pre_cleanup
ler2_destroy
ler1_destroy
h2_destroy
h1_destroy
vrf_cleanup
}
trap cleanup EXIT
setup_prepare
setup_wait
tests_run
tc_offload_check
if [[ $? -ne 0 ]]; then
log_info "Could not test offloaded functionality"
else
tcflags="skip_sw"
tests_run
fi
exit $EXIT_STATUS