#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# This test is for checking bridge backup port and backup nexthop ID
# functionality. The topology consists of two bridge (VTEPs) connected using
# VXLAN. The test checks that when the switch port (swp1) is down, traffic is
# redirected to the VXLAN port (vx0). When a backup nexthop ID is configured,
# the test checks that traffic is redirected with the correct nexthop
# information.
#
# +------------------------------------+ +------------------------------------+
# | + swp1 + vx0 | | + swp1 + vx0 |
# | | | | | | | |
# | | br0 | | | | | |
# | +------------+-----------+ | | +------------+-----------+ |
# | | | | | |
# | | | | | |
# | + | | + |
# | br0 | | br0 |
# | + | | + |
# | | | | | |
# | | | | | |
# | + | | + |
# | br0.10 | | br0.10 |
# | 192.0.2.65/28 | | 192.0.2.66/28 |
# | | | |
# | | | |
# | 192.0.2.33 | | 192.0.2.34 |
# | + lo | | + lo |
# | | | |
# | | | |
# | 192.0.2.49/28 | | 192.0.2.50/28 |
# | veth0 +-------+ veth0 |
# | | | |
# | sw1 | | sw2 |
# +------------------------------------+ +------------------------------------+
source lib.sh
ret=0
# All tests in this script. Can be overridden with -t option.
TESTS="
backup_port
backup_nhid
backup_nhid_invalid
backup_nhid_ping
backup_nhid_torture
"
VERBOSE=0
PAUSE_ON_FAIL=no
PAUSE=no
PING_TIMEOUT=5
################################################################################
# Utilities
log_test()
{
local rc=$1
local expected=$2
local msg="$3"
if [ ${rc} -eq ${expected} ]; then
printf "TEST: %-60s [ OK ]\n" "${msg}"
nsuccess=$((nsuccess+1))
else
ret=1
nfail=$((nfail+1))
printf "TEST: %-60s [FAIL]\n" "${msg}"
if [ "$VERBOSE" = "1" ]; then
echo " rc=$rc, expected $expected"
fi
if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
echo
echo "hit enter to continue, 'q' to quit"
read a
[ "$a" = "q" ] && exit 1
fi
fi
if [ "${PAUSE}" = "yes" ]; then
echo
echo "hit enter to continue, 'q' to quit"
read a
[ "$a" = "q" ] && exit 1
fi
[ "$VERBOSE" = "1" ] && echo
}
run_cmd()
{
local cmd="$1"
local out
local stderr="2>/dev/null"
if [ "$VERBOSE" = "1" ]; then
printf "COMMAND: $cmd\n"
stderr=
fi
out=$(eval $cmd $stderr)
rc=$?
if [ "$VERBOSE" = "1" -a -n "$out" ]; then
echo " $out"
fi
return $rc
}
tc_check_packets()
{
local ns=$1; shift
local id=$1; shift
local handle=$1; shift
local count=$1; shift
local pkts
sleep 0.1
pkts=$(tc -n $ns -j -s filter show $id \
| jq ".[] | select(.options.handle == $handle) | \
.options.actions[0].stats.packets")
[[ $pkts == $count ]]
}
bridge_link_check()
{
local ns=$1; shift
local dev=$1; shift
local state=$1; shift
bridge -n $ns -d -j link show dev $dev | \
jq -e ".[][\"state\"] == \"$state\"" &> /dev/null
}
################################################################################
# Setup
setup_topo_ns()
{
local ns=$1; shift
ip netns exec $ns sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1
ip netns exec $ns sysctl -qw net.ipv6.conf.default.ignore_routes_with_linkdown=1
ip netns exec $ns sysctl -qw net.ipv6.conf.all.accept_dad=0
ip netns exec $ns sysctl -qw net.ipv6.conf.default.accept_dad=0
}
setup_topo()
{
local ns
setup_ns sw1 sw2
for ns in $sw1 $sw2; do
setup_topo_ns $ns
done
ip link add name veth0 type veth peer name veth1
ip link set dev veth0 netns $sw1 name veth0
ip link set dev veth1 netns $sw2 name veth0
}
setup_sw_common()
{
local ns=$1; shift
local local_addr=$1; shift
local remote_addr=$1; shift
local veth_addr=$1; shift
local gw_addr=$1; shift
local br_addr=$1; shift
ip -n $ns address add $local_addr/32 dev lo
ip -n $ns link set dev veth0 up
ip -n $ns address add $veth_addr/28 dev veth0
ip -n $ns route add default via $gw_addr
ip -n $ns link add name br0 up type bridge vlan_filtering 1 \
vlan_default_pvid 0 mcast_snooping 0
ip -n $ns link add link br0 name br0.10 up type vlan id 10
bridge -n $ns vlan add vid 10 dev br0 self
ip -n $ns address add $br_addr/28 dev br0.10
ip -n $ns link add name swp1 up type dummy
ip -n $ns link set dev swp1 master br0
bridge -n $ns vlan add vid 10 dev swp1 untagged
ip -n $ns link add name vx0 up master br0 type vxlan \
local $local_addr dstport 4789 nolearning external
bridge -n $ns link set dev vx0 vlan_tunnel on learning off
bridge -n $ns vlan add vid 10 dev vx0
bridge -n $ns vlan add vid 10 dev vx0 tunnel_info id 10010
}
setup_sw1()
{
local ns=$sw1
local local_addr=192.0.2.33
local remote_addr=192.0.2.34
local veth_addr=192.0.2.49
local gw_addr=192.0.2.50
local br_addr=192.0.2.65
setup_sw_common $ns $local_addr $remote_addr $veth_addr $gw_addr \
$br_addr
}
setup_sw2()
{
local ns=$sw2
local local_addr=192.0.2.34
local remote_addr=192.0.2.33
local veth_addr=192.0.2.50
local gw_addr=192.0.2.49
local br_addr=192.0.2.66
setup_sw_common $ns $local_addr $remote_addr $veth_addr $gw_addr \
$br_addr
}
setup()
{
set -e
setup_topo
setup_sw1
setup_sw2
sleep 5
set +e
}
cleanup()
{
cleanup_ns $sw1 $sw2
}
################################################################################
# Tests
backup_port()
{
local dmac=00:11:22:33:44:55
local smac=00:aa:bb:cc:dd:ee
echo
echo "Backup port"
echo "-----------"
run_cmd "tc -n $sw1 qdisc replace dev swp1 clsact"
run_cmd "tc -n $sw1 filter replace dev swp1 egress pref 1 handle 101 proto ip flower src_mac $smac dst_mac $dmac action pass"
run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto ip flower src_mac $smac dst_mac $dmac action pass"
run_cmd "bridge -n $sw1 fdb replace $dmac dev swp1 master static vlan 10"
# Initial state - check that packets are forwarded out of swp1 when it
# has a carrier and not forwarded out of any port when it does not have
# a carrier.
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 1
log_test $? 0 "Forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 0
log_test $? 0 "No forwarding out of vx0"
run_cmd "ip -n $sw1 link set dev swp1 carrier off"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 disabled
log_test $? 0 "swp1 carrier off"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 1
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 0
log_test $? 0 "No forwarding out of vx0"
run_cmd "ip -n $sw1 link set dev swp1 carrier on"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 forwarding
log_test $? 0 "swp1 carrier on"
# Configure vx0 as the backup port of swp1 and check that packets are
# forwarded out of swp1 when it has a carrier and out of vx0 when swp1
# does not have a carrier.
run_cmd "bridge -n $sw1 link set dev swp1 backup_port vx0"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_port vx0\""
log_test $? 0 "vx0 configured as backup port of swp1"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 2
log_test $? 0 "Forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 0
log_test $? 0 "No forwarding out of vx0"
run_cmd "ip -n $sw1 link set dev swp1 carrier off"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 disabled
log_test $? 0 "swp1 carrier off"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 2
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "Forwarding out of vx0"
run_cmd "ip -n $sw1 link set dev swp1 carrier on"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 forwarding
log_test $? 0 "swp1 carrier on"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 3
log_test $? 0 "Forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "No forwarding out of vx0"
# Remove vx0 as the backup port of swp1 and check that packets are no
# longer forwarded out of vx0 when swp1 does not have a carrier.
run_cmd "bridge -n $sw1 link set dev swp1 nobackup_port"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_port vx0\""
log_test $? 1 "vx0 not configured as backup port of swp1"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 4
log_test $? 0 "Forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "No forwarding out of vx0"
run_cmd "ip -n $sw1 link set dev swp1 carrier off"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 disabled
log_test $? 0 "swp1 carrier off"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 4
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "No forwarding out of vx0"
}
backup_nhid()
{
local dmac=00:11:22:33:44:55
local smac=00:aa:bb:cc:dd:ee
echo
echo "Backup nexthop ID"
echo "-----------------"
run_cmd "tc -n $sw1 qdisc replace dev swp1 clsact"
run_cmd "tc -n $sw1 filter replace dev swp1 egress pref 1 handle 101 proto ip flower src_mac $smac dst_mac $dmac action pass"
run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto ip flower src_mac $smac dst_mac $dmac action pass"
run_cmd "ip -n $sw1 nexthop replace id 1 via 192.0.2.34 fdb"
run_cmd "ip -n $sw1 nexthop replace id 2 via 192.0.2.34 fdb"
run_cmd "ip -n $sw1 nexthop replace id 10 group 1/2 fdb"
run_cmd "bridge -n $sw1 fdb replace $dmac dev swp1 master static vlan 10"
run_cmd "bridge -n $sw1 fdb replace $dmac dev vx0 self static dst 192.0.2.36 src_vni 10010"
run_cmd "ip -n $sw2 address replace 192.0.2.36/32 dev lo"
# The first filter matches on packets forwarded using the backup
# nexthop ID and the second filter matches on packets forwarded using a
# regular VXLAN FDB entry.
run_cmd "tc -n $sw2 qdisc replace dev vx0 clsact"
run_cmd "tc -n $sw2 filter replace dev vx0 ingress pref 1 handle 101 proto ip flower src_mac $smac dst_mac $dmac enc_key_id 10010 enc_dst_ip 192.0.2.34 action pass"
run_cmd "tc -n $sw2 filter replace dev vx0 ingress pref 1 handle 102 proto ip flower src_mac $smac dst_mac $dmac enc_key_id 10010 enc_dst_ip 192.0.2.36 action pass"
# Configure vx0 as the backup port of swp1 and check that packets are
# forwarded out of swp1 when it has a carrier and out of vx0 when swp1
# does not have a carrier. When packets are forwarded out of vx0, check
# that they are forwarded by the VXLAN FDB entry.
run_cmd "bridge -n $sw1 link set dev swp1 backup_port vx0"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_port vx0\""
log_test $? 0 "vx0 configured as backup port of swp1"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 1
log_test $? 0 "Forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 0
log_test $? 0 "No forwarding out of vx0"
run_cmd "ip -n $sw1 link set dev swp1 carrier off"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 disabled
log_test $? 0 "swp1 carrier off"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 1
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "Forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 0
log_test $? 0 "No forwarding using backup nexthop ID"
tc_check_packets $sw2 "dev vx0 ingress" 102 1
log_test $? 0 "Forwarding using VXLAN FDB entry"
run_cmd "ip -n $sw1 link set dev swp1 carrier on"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 forwarding
log_test $? 0 "swp1 carrier on"
# Configure nexthop ID 10 as the backup nexthop ID of swp1 and check
# that when packets are forwarded out of vx0, they are forwarded using
# the backup nexthop ID.
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 10"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_nhid 10\""
log_test $? 0 "nexthop ID 10 configured as backup nexthop ID of swp1"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 2
log_test $? 0 "Forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "No forwarding out of vx0"
run_cmd "ip -n $sw1 link set dev swp1 carrier off"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 disabled
log_test $? 0 "swp1 carrier off"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 2
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "Forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 1
log_test $? 0 "Forwarding using backup nexthop ID"
tc_check_packets $sw2 "dev vx0 ingress" 102 1
log_test $? 0 "No forwarding using VXLAN FDB entry"
run_cmd "ip -n $sw1 link set dev swp1 carrier on"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 forwarding
log_test $? 0 "swp1 carrier on"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 3
log_test $? 0 "Forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "No forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 1
log_test $? 0 "No forwarding using backup nexthop ID"
tc_check_packets $sw2 "dev vx0 ingress" 102 1
log_test $? 0 "No forwarding using VXLAN FDB entry"
# Reset the backup nexthop ID to 0 and check that packets are no longer
# forwarded using the backup nexthop ID when swp1 does not have a
# carrier and are instead forwarded by the VXLAN FDB.
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 0"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_nhid\""
log_test $? 1 "No backup nexthop ID configured for swp1"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 4
log_test $? 0 "Forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "No forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 1
log_test $? 0 "No forwarding using backup nexthop ID"
tc_check_packets $sw2 "dev vx0 ingress" 102 1
log_test $? 0 "No forwarding using VXLAN FDB entry"
run_cmd "ip -n $sw1 link set dev swp1 carrier off"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 disabled
log_test $? 0 "swp1 carrier off"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 4
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 3
log_test $? 0 "Forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 1
log_test $? 0 "No forwarding using backup nexthop ID"
tc_check_packets $sw2 "dev vx0 ingress" 102 2
log_test $? 0 "Forwarding using VXLAN FDB entry"
}
backup_nhid_invalid()
{
local dmac=00:11:22:33:44:55
local smac=00:aa:bb:cc:dd:ee
local tx_drop
echo
echo "Backup nexthop ID - invalid IDs"
echo "-------------------------------"
# Check that when traffic is redirected with an invalid nexthop ID, it
# is forwarded out of the VXLAN port, but dropped by the VXLAN driver
# and does not crash the host.
run_cmd "tc -n $sw1 qdisc replace dev swp1 clsact"
run_cmd "tc -n $sw1 filter replace dev swp1 egress pref 1 handle 101 proto ip flower src_mac $smac dst_mac $dmac action pass"
run_cmd "tc -n $sw1 qdisc replace dev vx0 clsact"
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 1 handle 101 proto ip flower src_mac $smac dst_mac $dmac action pass"
# Drop all other Tx traffic to avoid changes to Tx drop counter.
run_cmd "tc -n $sw1 filter replace dev vx0 egress pref 2 handle 102 proto all matchall action drop"
tx_drop=$(ip -n $sw1 -s -j link show dev vx0 | jq '.[]["stats64"]["tx"]["dropped"]')
run_cmd "ip -n $sw1 nexthop replace id 1 via 192.0.2.34 fdb"
run_cmd "ip -n $sw1 nexthop replace id 2 via 192.0.2.34 fdb"
run_cmd "ip -n $sw1 nexthop replace id 10 group 1/2 fdb"
run_cmd "bridge -n $sw1 fdb replace $dmac dev swp1 master static vlan 10"
run_cmd "tc -n $sw2 qdisc replace dev vx0 clsact"
run_cmd "tc -n $sw2 filter replace dev vx0 ingress pref 1 handle 101 proto ip flower src_mac $smac dst_mac $dmac enc_key_id 10010 enc_dst_ip 192.0.2.34 action pass"
# First, check that redirection works.
run_cmd "bridge -n $sw1 link set dev swp1 backup_port vx0"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_port vx0\""
log_test $? 0 "vx0 configured as backup port of swp1"
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 10"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_nhid 10\""
log_test $? 0 "Valid nexthop as backup nexthop"
run_cmd "ip -n $sw1 link set dev swp1 carrier off"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 disabled
log_test $? 0 "swp1 carrier off"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 0
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 1
log_test $? 0 "Forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 1
log_test $? 0 "Forwarding using backup nexthop ID"
run_cmd "ip -n $sw1 -s -j link show dev vx0 | jq -e '.[][\"stats64\"][\"tx\"][\"dropped\"] == $tx_drop'"
log_test $? 0 "No Tx drop increase"
# Use a non-existent nexthop ID.
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 20"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_nhid 20\""
log_test $? 0 "Non-existent nexthop as backup nexthop"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 0
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 2
log_test $? 0 "Forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 1
log_test $? 0 "No forwarding using backup nexthop ID"
run_cmd "ip -n $sw1 -s -j link show dev vx0 | jq -e '.[][\"stats64\"][\"tx\"][\"dropped\"] == $((tx_drop + 1))'"
log_test $? 0 "Tx drop increased"
# Use a blckhole nexthop.
run_cmd "ip -n $sw1 nexthop replace id 30 blackhole"
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 30"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_nhid 30\""
log_test $? 0 "Blackhole nexthop as backup nexthop"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 0
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 3
log_test $? 0 "Forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 1
log_test $? 0 "No forwarding using backup nexthop ID"
run_cmd "ip -n $sw1 -s -j link show dev vx0 | jq -e '.[][\"stats64\"][\"tx\"][\"dropped\"] == $((tx_drop + 2))'"
log_test $? 0 "Tx drop increased"
# Non-group FDB nexthop.
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 1"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_nhid 1\""
log_test $? 0 "Non-group FDB nexthop as backup nexthop"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 0
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 4
log_test $? 0 "Forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 1
log_test $? 0 "No forwarding using backup nexthop ID"
run_cmd "ip -n $sw1 -s -j link show dev vx0 | jq -e '.[][\"stats64\"][\"tx\"][\"dropped\"] == $((tx_drop + 3))'"
log_test $? 0 "Tx drop increased"
# IPv6 address family nexthop.
run_cmd "ip -n $sw1 nexthop replace id 100 via 2001:db8:100::1 fdb"
run_cmd "ip -n $sw1 nexthop replace id 200 via 2001:db8:100::1 fdb"
run_cmd "ip -n $sw1 nexthop replace id 300 group 100/200 fdb"
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 300"
run_cmd "bridge -n $sw1 -d link show dev swp1 | grep \"backup_nhid 300\""
log_test $? 0 "IPv6 address family nexthop as backup nexthop"
run_cmd "ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 1"
tc_check_packets $sw1 "dev swp1 egress" 101 0
log_test $? 0 "No forwarding out of swp1"
tc_check_packets $sw1 "dev vx0 egress" 101 5
log_test $? 0 "Forwarding out of vx0"
tc_check_packets $sw2 "dev vx0 ingress" 101 1
log_test $? 0 "No forwarding using backup nexthop ID"
run_cmd "ip -n $sw1 -s -j link show dev vx0 | jq -e '.[][\"stats64\"][\"tx\"][\"dropped\"] == $((tx_drop + 4))'"
log_test $? 0 "Tx drop increased"
}
backup_nhid_ping()
{
local sw1_mac
local sw2_mac
echo
echo "Backup nexthop ID - ping"
echo "------------------------"
# Test bidirectional traffic when traffic is redirected in both VTEPs.
sw1_mac=$(ip -n $sw1 -j -p link show br0.10 | jq -r '.[]["address"]')
sw2_mac=$(ip -n $sw2 -j -p link show br0.10 | jq -r '.[]["address"]')
run_cmd "bridge -n $sw1 fdb replace $sw2_mac dev swp1 master static vlan 10"
run_cmd "bridge -n $sw2 fdb replace $sw1_mac dev swp1 master static vlan 10"
run_cmd "ip -n $sw1 neigh replace 192.0.2.66 lladdr $sw2_mac nud perm dev br0.10"
run_cmd "ip -n $sw2 neigh replace 192.0.2.65 lladdr $sw1_mac nud perm dev br0.10"
run_cmd "ip -n $sw1 nexthop replace id 1 via 192.0.2.34 fdb"
run_cmd "ip -n $sw2 nexthop replace id 1 via 192.0.2.33 fdb"
run_cmd "ip -n $sw1 nexthop replace id 10 group 1 fdb"
run_cmd "ip -n $sw2 nexthop replace id 10 group 1 fdb"
run_cmd "bridge -n $sw1 link set dev swp1 backup_port vx0"
run_cmd "bridge -n $sw2 link set dev swp1 backup_port vx0"
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 10"
run_cmd "bridge -n $sw2 link set dev swp1 backup_nhid 10"
run_cmd "ip -n $sw1 link set dev swp1 carrier off"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw1 swp1 disabled
run_cmd "ip -n $sw2 link set dev swp1 carrier off"
busywait $BUSYWAIT_TIMEOUT bridge_link_check $sw2 swp1 disabled
run_cmd "ip netns exec $sw1 ping -i 0.1 -c 10 -w $PING_TIMEOUT 192.0.2.66"
log_test $? 0 "Ping with backup nexthop ID"
# Reset the backup nexthop ID to 0 and check that ping fails.
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 0"
run_cmd "bridge -n $sw2 link set dev swp1 backup_nhid 0"
run_cmd "ip netns exec $sw1 ping -i 0.1 -c 10 -w $PING_TIMEOUT 192.0.2.66"
log_test $? 1 "Ping after disabling backup nexthop ID"
}
backup_nhid_add_del_loop()
{
while true; do
ip -n $sw1 nexthop del id 10
ip -n $sw1 nexthop replace id 10 group 1/2 fdb
done >/dev/null 2>&1
}
backup_nhid_torture()
{
local dmac=00:11:22:33:44:55
local smac=00:aa:bb:cc:dd:ee
local pid1
local pid2
local pid3
echo
echo "Backup nexthop ID - torture test"
echo "--------------------------------"
# Continuously send traffic through the backup nexthop while adding and
# deleting the group. The test is considered successful if nothing
# crashed.
run_cmd "ip -n $sw1 nexthop replace id 1 via 192.0.2.34 fdb"
run_cmd "ip -n $sw1 nexthop replace id 2 via 192.0.2.34 fdb"
run_cmd "ip -n $sw1 nexthop replace id 10 group 1/2 fdb"
run_cmd "bridge -n $sw1 fdb replace $dmac dev swp1 master static vlan 10"
run_cmd "bridge -n $sw1 link set dev swp1 backup_port vx0"
run_cmd "bridge -n $sw1 link set dev swp1 backup_nhid 10"
run_cmd "ip -n $sw1 link set dev swp1 carrier off"
backup_nhid_add_del_loop &
pid1=$!
ip netns exec $sw1 mausezahn br0.10 -a $smac -b $dmac -A 198.51.100.1 -B 198.51.100.2 -t ip -p 100 -q -c 0 &
pid2=$!
sleep 30
kill -9 $pid1 $pid2
wait $pid1 $pid2 2>/dev/null
log_test 0 0 "Torture test"
}
################################################################################
# Usage
usage()
{
cat <<EOF
usage: ${0##*/} OPTS
-t <test> Test(s) to run (default: all)
(options: $TESTS)
-p Pause on fail
-P Pause after each test before cleanup
-v Verbose mode (show commands and output)
-w Timeout for ping
EOF
}
################################################################################
# Main
trap cleanup EXIT
while getopts ":t:pPvhw:" opt; do
case $opt in
t) TESTS=$OPTARG;;
p) PAUSE_ON_FAIL=yes;;
P) PAUSE=yes;;
v) VERBOSE=$(($VERBOSE + 1));;
w) PING_TIMEOUT=$OPTARG;;
h) usage; exit 0;;
*) usage; exit 1;;
esac
done
# Make sure we don't pause twice.
[ "${PAUSE}" = "yes" ] && PAUSE_ON_FAIL=no
if [ "$(id -u)" -ne 0 ];then
echo "SKIP: Need root privileges"
exit $ksft_skip;
fi
if [ ! -x "$(command -v ip)" ]; then
echo "SKIP: Could not run test without ip tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v bridge)" ]; then
echo "SKIP: Could not run test without bridge tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v tc)" ]; then
echo "SKIP: Could not run test without tc tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v mausezahn)" ]; then
echo "SKIP: Could not run test without mausezahn tool"
exit $ksft_skip
fi
if [ ! -x "$(command -v jq)" ]; then
echo "SKIP: Could not run test without jq tool"
exit $ksft_skip
fi
bridge link help 2>&1 | grep -q "backup_nhid"
if [ $? -ne 0 ]; then
echo "SKIP: iproute2 bridge too old, missing backup nexthop ID support"
exit $ksft_skip
fi
# Start clean.
cleanup
for t in $TESTS
do
setup; $t; cleanup;
done
if [ "$TESTS" != "none" ]; then
printf "\nTests passed: %3d\n" ${nsuccess}
printf "Tests failed: %3d\n" ${nfail}
fi
exit $ret
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