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selftests: mlxsw: spectrum-2: Add a test for VxLAN flooding with IPv6
The device stores flood records in a singly linked list where each record stores up to X IP addresses of remote VTEPs. The number of records is changed according to ASIC type and address family. Add a test which is similar to the existing IPv4 test to check IPv6. The test is dedicated for Spectrum-2 and above, which support up to four IPv6 addresses in one record. The test verifies that packets are correctly flooded in various cases such as deletion of a record in the middle of the list. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amit Cohen
David S. Miller
parent
7ae23eddfa
commit
d01724dd2a
1 changed files with 322 additions and 0 deletions
322
tools/testing/selftests/drivers/net/mlxsw/spectrum-2/vxlan_flooding_ipv6.sh
Executable file
322
tools/testing/selftests/drivers/net/mlxsw/spectrum-2/vxlan_flooding_ipv6.sh
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# Test VxLAN flooding. The device stores flood records in a singly linked list
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# where each record stores up to four IPv6 addresses of remote VTEPs. The test
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# verifies that packets are correctly flooded in various cases such as deletion
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# of a record in the middle of the list.
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#
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# +-----------------------+
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# | H1 (vrf) |
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# | + $h1 |
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# | | 2001:db8:1::1/64 |
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# +----|------------------+
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# |
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# +----|----------------------------------------------------------------------+
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# | SW | |
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# | +--|--------------------------------------------------------------------+ |
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# | | + $swp1 BR0 (802.1d) | |
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# | | | |
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# | | + vxlan0 (vxlan) | |
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# | | local 2001:db8:2::1 | |
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# | | remote 2001:db8:2::{2..17} | |
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# | | id 10 dstport 4789 | |
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# | +-----------------------------------------------------------------------+ |
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# | |
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# | 2001:db8:2::0/64 via 2001:db8:3::2 |
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# | |
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# | + $rp1 |
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# | | 2001:db8:3::1/64 |
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# +----|----------------------------------------------------------------------+
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# |
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# +----|--------------------------------------------------------+
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# | | R2 (vrf) |
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# | + $rp2 |
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# | 2001:db8:3::2/64 |
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# | |
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# +-------------------------------------------------------------+
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lib_dir=$(dirname $0)/../../../../net/forwarding
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ALL_TESTS="flooding_test"
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NUM_NETIFS=4
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source $lib_dir/tc_common.sh
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source $lib_dir/lib.sh
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h1_create()
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{
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simple_if_init $h1 2001:db8:1::1/64
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}
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h1_destroy()
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{
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simple_if_fini $h1 2001:db8:1::1/64
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}
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switch_create()
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{
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# Make sure the bridge uses the MAC address of the local port and
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# not that of the VxLAN's device
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ip link add dev br0 type bridge mcast_snooping 0
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ip link set dev br0 address $(mac_get $swp1)
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ip link add name vxlan0 type vxlan id 10 nolearning \
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udp6zerocsumrx udp6zerocsumtx ttl 20 tos inherit \
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local 2001:db8:2::1 dstport 4789
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ip address add 2001:db8:2::1/128 dev lo
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ip link set dev $swp1 master br0
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ip link set dev vxlan0 master br0
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ip link set dev br0 up
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ip link set dev $swp1 up
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ip link set dev vxlan0 up
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}
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switch_destroy()
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{
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ip link set dev vxlan0 down
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ip link set dev $swp1 down
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ip link set dev br0 down
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ip link set dev vxlan0 nomaster
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ip link set dev $swp1 nomaster
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ip address del 2001:db8:2::1/128 dev lo
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ip link del dev vxlan0
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ip link del dev br0
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}
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router1_create()
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{
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# This router is in the default VRF, where the VxLAN device is
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# performing the L3 lookup
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ip link set dev $rp1 up
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ip address add 2001:db8:3::1/64 dev $rp1
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ip route add 2001:db8:2::0/64 via 2001:db8:3::2
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}
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router1_destroy()
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{
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ip route del 2001:db8:2::0/64 via 2001:db8:3::2
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ip address del 2001:db8:3::1/64 dev $rp1
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ip link set dev $rp1 down
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}
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router2_create()
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{
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# This router is not in the default VRF, so use simple_if_init()
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simple_if_init $rp2 2001:db8:3::2/64
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}
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router2_destroy()
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{
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simple_if_fini $rp2 2001:db8:3::2/64
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}
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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swp1=${NETIFS[p2]}
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rp1=${NETIFS[p3]}
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rp2=${NETIFS[p4]}
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vrf_prepare
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h1_create
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switch_create
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router1_create
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router2_create
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forwarding_enable
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}
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cleanup()
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{
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pre_cleanup
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forwarding_restore
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router2_destroy
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router1_destroy
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switch_destroy
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h1_destroy
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vrf_cleanup
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}
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flooding_remotes_add()
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{
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local num_remotes=$1
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local lsb
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local i
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for i in $(eval echo {1..$num_remotes}); do
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lsb=$((i + 1))
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bridge fdb append 00:00:00:00:00:00 dev vxlan0 self \
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dst 2001:db8:2::$lsb
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done
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}
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flooding_filters_add()
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{
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local num_remotes=$1
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local lsb
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local i
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tc qdisc add dev $rp2 clsact
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for i in $(eval echo {1..$num_remotes}); do
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lsb=$((i + 1))
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tc filter add dev $rp2 ingress protocol ipv6 pref $i handle $i \
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flower ip_proto udp dst_ip 2001:db8:2::$lsb \
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dst_port 4789 skip_sw action drop
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done
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}
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flooding_filters_del()
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{
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local num_remotes=$1
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local i
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for i in $(eval echo {1..$num_remotes}); do
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tc filter del dev $rp2 ingress protocol ipv6 pref $i \
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handle $i flower
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done
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tc qdisc del dev $rp2 clsact
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}
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flooding_check_packets()
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{
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local packets=("$@")
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local num_remotes=${#packets[@]}
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local i
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for i in $(eval echo {1..$num_remotes}); do
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tc_check_packets "dev $rp2 ingress" $i ${packets[i - 1]}
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check_err $? "remote $i - did not get expected number of packets"
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done
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}
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flooding_test()
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{
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# Use 16 remote VTEPs that will be stored in 4 records. The array
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# 'packets' will store how many packets are expected to be received
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# by each remote VTEP at each stage of the test
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declare -a packets=(1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1)
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local num_remotes=16
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RET=0
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# Add FDB entries for remote VTEPs and corresponding tc filters on the
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# ingress of the nexthop router. These filters will count how many
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# packets were flooded to each remote VTEP
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flooding_remotes_add $num_remotes
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flooding_filters_add $num_remotes
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# Send one packet and make sure it is flooded to all the remote VTEPs
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$MZ $h1 -q -p 64 -b de:ad:be:ef:13:37 -t ip -c 1
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flooding_check_packets "${packets[@]}"
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log_test "flood after 1 packet"
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# Delete the third record which corresponds to VTEPs with LSB 10..13
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# and check that packet is flooded correctly when we remove a record
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# from the middle of the list
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RET=0
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packets=(2 2 2 2 2 2 2 2 1 1 1 1 2 2 2 2)
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::10
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::11
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::12
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::13
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$MZ $h1 -q -p 64 -b de:ad:be:ef:13:37 -t ip -c 1
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flooding_check_packets "${packets[@]}"
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log_test "flood after 2 packets"
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# Delete the first record and make sure the packet is flooded correctly
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RET=0
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packets=(2 2 2 2 3 3 3 3 1 1 1 1 3 3 3 3)
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::2
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::3
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::4
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::5
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$MZ $h1 -q -p 64 -b de:ad:be:ef:13:37 -t ip -c 1
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flooding_check_packets "${packets[@]}"
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log_test "flood after 3 packets"
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# Delete the last record and make sure the packet is flooded correctly
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RET=0
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packets=(2 2 2 2 4 4 4 4 1 1 1 1 3 3 3 3)
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::14
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::15
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::16
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::17
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$MZ -6 $h1 -q -p 64 -b de:ad:be:ef:13:37 -t ip -c 1
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flooding_check_packets "${packets[@]}"
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log_test "flood after 4 packets"
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# Delete the last record, one entry at a time and make sure single
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# entries are correctly removed
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RET=0
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packets=(2 2 2 2 4 5 5 5 1 1 1 1 3 3 3 3)
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::6
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$MZ -6 $h1 -q -p 64 -b de:ad:be:ef:13:37 -t ip -c 1
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flooding_check_packets "${packets[@]}"
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log_test "flood after 5 packets"
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RET=0
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packets=(2 2 2 2 4 5 6 6 1 1 1 1 3 3 3 3)
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::7
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$MZ -6 $h1 -q -p 64 -b de:ad:be:ef:13:37 -t ip -c 1
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flooding_check_packets "${packets[@]}"
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log_test "flood after 6 packets"
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RET=0
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packets=(2 2 2 2 4 5 6 7 1 1 1 1 3 3 3 3)
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::8
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$MZ -6 $h1 -q -p 64 -b de:ad:be:ef:13:37 -t ip -c 1
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flooding_check_packets "${packets[@]}"
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log_test "flood after 7 packets"
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RET=0
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packets=(2 2 2 2 4 5 6 7 1 1 1 1 3 3 3 3)
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bridge fdb del 00:00:00:00:00:00 dev vxlan0 self dst 2001:db8:2::9
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$MZ -6 $h1 -q -p 64 -b de:ad:be:ef:13:37 -t ip -c 1
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flooding_check_packets "${packets[@]}"
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log_test "flood after 8 packets"
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flooding_filters_del $num_remotes
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}
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trap cleanup EXIT
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setup_prepare
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setup_wait
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tests_run
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exit $EXIT_STATUS
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