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tc_tunnel_key.sh
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tc_tunnel_key.sh
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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
ALL_TESTS="tunnel_key_nofrag_test"
NUM_NETIFS=4
source tc_common.sh
source lib.sh
tcflags="skip_hw"
h1_create()
{
simple_if_init $h1 192.0.2.1/24
forwarding_enable
mtu_set $h1 1500
tunnel_create h1-et vxlan 192.0.2.1 192.0.2.2 dev $h1 dstport 0 external
tc qdisc add dev h1-et clsact
mtu_set h1-et 1230
mtu_restore $h1
mtu_set $h1 1000
}
h1_destroy()
{
tc qdisc del dev h1-et clsact
tunnel_destroy h1-et
forwarding_restore
mtu_restore $h1
simple_if_fini $h1 192.0.2.1/24
}
h2_create()
{
simple_if_init $h2 192.0.2.2/24
}
h2_destroy()
{
simple_if_fini $h2 192.0.2.2/24
}
switch_create()
{
simple_if_init $swp1 192.0.2.2/24
tc qdisc add dev $swp1 clsact
simple_if_init $swp2 192.0.2.1/24
}
switch_destroy()
{
simple_if_fini $swp2 192.0.2.1/24
tc qdisc del dev $swp1 clsact
simple_if_fini $swp1 192.0.2.2/24
}
setup_prepare()
{
h1=${NETIFS[p1]}
swp1=${NETIFS[p2]}
swp2=${NETIFS[p3]}
h2=${NETIFS[p4]}
h1mac=$(mac_get $h1)
h2mac=$(mac_get $h2)
swp1origmac=$(mac_get $swp1)
swp2origmac=$(mac_get $swp2)
ip link set $swp1 address $h2mac
ip link set $swp2 address $h1mac
vrf_prepare
h1_create
h2_create
switch_create
if ! tc action add action tunnel_key help 2>&1 | grep -q nofrag; then
log_test "SKIP: iproute doesn't support nofrag"
exit $ksft_skip
fi
}
cleanup()
{
pre_cleanup
switch_destroy
h2_destroy
h1_destroy
vrf_cleanup
ip link set $swp2 address $swp2origmac
ip link set $swp1 address $swp1origmac
}
tunnel_key_nofrag_test()
{
RET=0
local i
tc filter add dev $swp1 ingress protocol ip pref 100 handle 100 \
flower src_ip 192.0.2.1 dst_ip 192.0.2.2 ip_proto udp \
ip_flags nofrag action drop
tc filter add dev $swp1 ingress protocol ip pref 101 handle 101 \
flower src_ip 192.0.2.1 dst_ip 192.0.2.2 ip_proto udp \
ip_flags firstfrag action drop
tc filter add dev $swp1 ingress protocol ip pref 102 handle 102 \
flower src_ip 192.0.2.1 dst_ip 192.0.2.2 ip_proto udp \
ip_flags nofirstfrag action drop
# test 'nofrag' set
tc filter add dev h1-et egress protocol all pref 1 handle 1 matchall $tcflags \
action tunnel_key set src_ip 192.0.2.1 dst_ip 192.0.2.2 id 42 nofrag index 10
$MZ h1-et -c 1 -p 930 -a 00:aa:bb:cc:dd:ee -b 00:ee:dd:cc:bb:aa -t ip -q
tc_check_packets "dev $swp1 ingress" 100 1
check_err $? "packet smaller than MTU was not tunneled"
$MZ h1-et -c 1 -p 931 -a 00:aa:bb:cc:dd:ee -b 00:ee:dd:cc:bb:aa -t ip -q
tc_check_packets "dev $swp1 ingress" 100 1
check_err $? "packet bigger than MTU matched nofrag (nofrag was set)"
tc_check_packets "dev $swp1 ingress" 101 0
check_err $? "packet bigger than MTU matched firstfrag (nofrag was set)"
tc_check_packets "dev $swp1 ingress" 102 0
check_err $? "packet bigger than MTU matched nofirstfrag (nofrag was set)"
# test 'nofrag' cleared
tc actions change action tunnel_key set src_ip 192.0.2.1 dst_ip 192.0.2.2 id 42 index 10
$MZ h1-et -c 1 -p 931 -a 00:aa:bb:cc:dd:ee -b 00:ee:dd:cc:bb:aa -t ip -q
tc_check_packets "dev $swp1 ingress" 100 1
check_err $? "packet bigger than MTU matched nofrag (nofrag was unset)"
tc_check_packets "dev $swp1 ingress" 101 1
check_err $? "packet bigger than MTU didn't match firstfrag (nofrag was unset) "
tc_check_packets "dev $swp1 ingress" 102 1
check_err $? "packet bigger than MTU didn't match nofirstfrag (nofrag was unset) "
for i in 100 101 102; do
tc filter del dev $swp1 ingress protocol ip pref $i handle $i flower
done
tc filter del dev h1-et egress pref 1 handle 1 matchall
log_test "tunnel_key nofrag ($tcflags)"
}
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