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selftests: forwarding: Add Q-in-VNI test for IPv6
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Add test to check Q-in-VNI traffic with IPv6 underlay and overlay.
The test is similar to the existing IPv4 test.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Amit Cohen authored and kuba-moo committed Dec 23, 2021
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347 changes: 347 additions & 0 deletions tools/testing/selftests/net/forwarding/q_in_vni_ipv6.sh
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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

# +-----------------------+ +------------------------+
# | H1 (vrf) | | H2 (vrf) |
# | + $h1.10 | | + $h2.10 |
# | | 2001:db8:1::1/64 | | | 2001:db8:1::2/64 |
# | | | | | |
# | | + $h1.20 | | | + $h2.20 |
# | \ | 2001:db8:2::1/64 | | \ | 2001:db8:2::2/64 |
# | \| | | \| |
# | + $h1 | | + $h2 |
# +----|------------------+ +----|-------------------+
# | |
# +----|--------------------------------------------------|-------------------+
# | SW | | |
# | +--|--------------------------------------------------|-----------------+ |
# | | + $swp1 BR1 (802.1ad) + $swp2 | |
# | | vid 100 pvid untagged vid 100 pvid | |
# | | untagged | |
# | | + vx100 (vxlan) | |
# | | local 2001:db8:3::1 | |
# | | remote 2001:db8:4::1 2001:db8:5::1 | |
# | | id 1000 dstport $VXPORT | |
# | | vid 100 pvid untagged | |
# | +-----------------------------------------------------------------------+ |
# | |
# | 2001:db8:4::0/64 via 2001:db8:3::2 |
# | 2001:db8:5::0/64 via 2001:db8:3::2 |
# | |
# | + $rp1 |
# | | 2001:db8:3::1/64 |
# +----|----------------------------------------------------------------------+
# |
# +----|----------------------------------------------------------+
# | | VRP2 (vrf) |
# | + $rp2 |
# | 2001:db8:3::2/64 |
# | | (maybe) HW
# =============================================================================
# | | (likely) SW
# | + v1 (veth) + v3 (veth) |
# | | 2001:db8:4::2/64 | 2001:db8:5::2/64 |
# +----|---------------------------------------|------------------+
# | |
# +----|--------------------------------+ +----|-------------------------------+
# | + v2 (veth) NS1 (netns) | | + v4 (veth) NS2 (netns) |
# | 2001:db8:4::1/64 | | 2001:db8:5::1/64 |
# | | | |
# | 2001:db8:3::0/64 via 2001:db8:4::2 | | 2001:db8:3::0/64 via 2001:db8:5::2 |
# | 2001:db8:5::1/128 via 2001:db8:4::2 | | 2001:db8:4::1/128 via |
# | | | 2001:db8:5::2 |
# | +-------------------------------+ | | +-------------------------------+ |
# | | BR2 (802.1ad) | | | | BR2 (802.1ad) | |
# | | + vx100 (vxlan) | | | | + vx100 (vxlan) | |
# | | local 2001:db8:4::1 | | | | local 2001:db8:5::1 | |
# | | remote 2001:db8:3::1 | | | | remote 2001:db8:3::1 | |
# | | remote 2001:db8:5::1 | | | | remote 2001:db8:4::1 | |
# | | id 1000 dstport $VXPORT | | | | id 1000 dstport $VXPORT | |
# | | vid 100 pvid untagged | | | | vid 100 pvid untagged | |
# | | | | | | | |
# | | + w1 (veth) | | | | + w1 (veth) | |
# | | | vid 100 pvid untagged | | | | | vid 100 pvid untagged | |
# | +--|----------------------------+ | | +--|----------------------------+ |
# | | | | | |
# | +--|----------------------------+ | | +--|----------------------------+ |
# | | | VW2 (vrf) | | | | | VW2 (vrf) | |
# | | + w2 (veth) | | | | + w2 (veth) | |
# | | |\ | | | | |\ | |
# | | | + w2.10 | | | | | + w2.10 | |
# | | | 2001:db8:1::3/64 | | | | | 2001:db8:1::4/64 | |
# | | | | | | | | | |
# | | + w2.20 | | | | + w2.20 | |
# | | 2001:db8:2::3/64 | | | | 2001:db8:2::4/64 | |
# | +-------------------------------+ | | +-------------------------------+ |
# +-------------------------------------+ +------------------------------------+

: ${VXPORT:=4789}
export VXPORT

: ${ALL_TESTS:="
ping_ipv6
"}

NUM_NETIFS=6
source lib.sh

h1_create()
{
simple_if_init $h1
tc qdisc add dev $h1 clsact
vlan_create $h1 10 v$h1 2001:db8:1::1/64
vlan_create $h1 20 v$h1 2001:db8:2::1/64
}

h1_destroy()
{
vlan_destroy $h1 20
vlan_destroy $h1 10
tc qdisc del dev $h1 clsact
simple_if_fini $h1
}

h2_create()
{
simple_if_init $h2
tc qdisc add dev $h2 clsact
vlan_create $h2 10 v$h2 2001:db8:1::2/64
vlan_create $h2 20 v$h2 2001:db8:2::2/64
}

h2_destroy()
{
vlan_destroy $h2 20
vlan_destroy $h2 10
tc qdisc del dev $h2 clsact
simple_if_fini $h2
}

rp1_set_addr()
{
ip address add dev $rp1 2001:db8:3::1/64

ip route add 2001:db8:4::0/64 nexthop via 2001:db8:3::2
ip route add 2001:db8:5::0/64 nexthop via 2001:db8:3::2
}

rp1_unset_addr()
{
ip route del 2001:db8:5::0/64 nexthop via 2001:db8:3::2
ip route del 2001:db8:4::0/64 nexthop via 2001:db8:3::2

ip address del dev $rp1 2001:db8:3::1/64
}

switch_create()
{
ip link add name br1 type bridge vlan_filtering 1 vlan_protocol 802.1ad \
vlan_default_pvid 0 mcast_snooping 0
# Make sure the bridge uses the MAC address of the local port and not
# that of the VxLAN's device.
ip link set dev br1 address $(mac_get $swp1)
ip link set dev br1 up

ip link set dev $rp1 up
rp1_set_addr

ip link add name vx100 type vxlan id 1000 \
local 2001:db8:3::1 dstport "$VXPORT" \
nolearning udp6zerocsumrx udp6zerocsumtx tos inherit ttl 100
ip link set dev vx100 up

ip link set dev vx100 master br1
bridge vlan add vid 100 dev vx100 pvid untagged

ip link set dev $swp1 master br1
ip link set dev $swp1 up
bridge vlan add vid 100 dev $swp1 pvid untagged

ip link set dev $swp2 master br1
ip link set dev $swp2 up
bridge vlan add vid 100 dev $swp2 pvid untagged

bridge fdb append dev vx100 00:00:00:00:00:00 dst 2001:db8:4::1 self
bridge fdb append dev vx100 00:00:00:00:00:00 dst 2001:db8:5::1 self
}

switch_destroy()
{
bridge fdb del dev vx100 00:00:00:00:00:00 dst 2001:db8:5::1 self
bridge fdb del dev vx100 00:00:00:00:00:00 dst 2001:db8:4::1 self

bridge vlan del vid 100 dev $swp2
ip link set dev $swp2 down
ip link set dev $swp2 nomaster

bridge vlan del vid 100 dev $swp1
ip link set dev $swp1 down
ip link set dev $swp1 nomaster

ip link set dev vx100 nomaster
ip link set dev vx100 down
ip link del dev vx100

rp1_unset_addr
ip link set dev $rp1 down

ip link set dev br1 down
ip link del dev br1
}

vrp2_create()
{
simple_if_init $rp2 2001:db8:3::2/64
__simple_if_init v1 v$rp2 2001:db8:4::2/64
__simple_if_init v3 v$rp2 2001:db8:5::2/64
tc qdisc add dev v1 clsact
}

vrp2_destroy()
{
tc qdisc del dev v1 clsact
__simple_if_fini v3 2001:db8:5::2/64
__simple_if_fini v1 2001:db8:4::2/64
simple_if_fini $rp2 2001:db8:3::2/64
}

ns_init_common()
{
local in_if=$1; shift
local in_addr=$1; shift
local other_in_addr=$1; shift
local nh_addr=$1; shift
local host_addr1=$1; shift
local host_addr2=$1; shift

ip link set dev $in_if up
ip address add dev $in_if $in_addr/64
tc qdisc add dev $in_if clsact

ip link add name br2 type bridge vlan_filtering 1 vlan_protocol 802.1ad \
vlan_default_pvid 0
ip link set dev br2 up

ip link add name w1 type veth peer name w2

ip link set dev w1 master br2
ip link set dev w1 up
bridge vlan add vid 100 dev w1 pvid untagged

ip link add name vx100 type vxlan id 1000 local $in_addr \
dstport "$VXPORT" udp6zerocsumrx
ip link set dev vx100 up
bridge fdb append dev vx100 00:00:00:00:00:00 dst 2001:db8:3::1 self
bridge fdb append dev vx100 00:00:00:00:00:00 dst $other_in_addr self

ip link set dev vx100 master br2
tc qdisc add dev vx100 clsact

bridge vlan add vid 100 dev vx100 pvid untagged

simple_if_init w2
vlan_create w2 10 vw2 $host_addr1/64
vlan_create w2 20 vw2 $host_addr2/64

ip route add 2001:db8:3::0/64 nexthop via $nh_addr
ip route add $other_in_addr/128 nexthop via $nh_addr
}
export -f ns_init_common

ns1_create()
{
ip netns add ns1
ip link set dev v2 netns ns1
in_ns ns1 \
ns_init_common v2 2001:db8:4::1 2001:db8:5::1 2001:db8:4::2 \
2001:db8:1::3 2001:db8:2::3
}

ns1_destroy()
{
ip netns exec ns1 ip link set dev v2 netns 1
ip netns del ns1
}

ns2_create()
{
ip netns add ns2
ip link set dev v4 netns ns2
in_ns ns2 \
ns_init_common v4 2001:db8:5::1 2001:db8:4::1 2001:db8:5::2 \
2001:db8:1::4 2001:db8:2::4
}

ns2_destroy()
{
ip netns exec ns2 ip link set dev v4 netns 1
ip netns del ns2
}

setup_prepare()
{
h1=${NETIFS[p1]}
swp1=${NETIFS[p2]}

swp2=${NETIFS[p3]}
h2=${NETIFS[p4]}

rp1=${NETIFS[p5]}
rp2=${NETIFS[p6]}

vrf_prepare
forwarding_enable

h1_create
h2_create
switch_create

ip link add name v1 type veth peer name v2
ip link add name v3 type veth peer name v4
vrp2_create
ns1_create
ns2_create

r1_mac=$(in_ns ns1 mac_get w2)
r2_mac=$(in_ns ns2 mac_get w2)
h2_mac=$(mac_get $h2)
}

cleanup()
{
pre_cleanup

ns2_destroy
ns1_destroy
vrp2_destroy
ip link del dev v3
ip link del dev v1

switch_destroy
h2_destroy
h1_destroy

forwarding_restore
vrf_cleanup
}

ping_ipv6()
{
ping6_test $h1 2001:db8:1::2 ": local->local"
ping6_test $h1 2001:db8:1::3 ": local->remote 1"
ping6_test $h1 2001:db8:1::4 ": local->remote 2"
}

test_all()
{
echo "Running tests with UDP port $VXPORT"
tests_run
}

trap cleanup EXIT

setup_prepare
setup_wait
test_all

exit $EXIT_STATUS

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