Commit 533a89b1 authored by Davide Caratti's avatar Davide Caratti Committed by Jakub Kicinski
Browse files

selftests: forwarding: add tunnel_key "nofrag" test case 



Add a selftest that configures metadata tunnel encapsulation using the TC
"tunnel_key" action: it includes a test case for setting "nofrag" flag.

Example output:

 # selftests: net/forwarding: tc_tunnel_key.sh
 # TEST: tunnel_key nofrag (skip_hw)                                   [ OK ]
 # INFO: Could not test offloaded functionality
 ok 1 selftests: net/forwarding: tc_tunnel_key.sh

Signed-off-by: default avatarDavide Caratti <dcaratti@redhat.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent b8617f8e

tools/testing/selftests/net/forwarding/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ TEST_PROGS = bridge_igmp.sh \ 
	tc_mpls_l2vpn.sh \

	tc_police.sh \

	tc_shblocks.sh \

	tc_tunnel_key.sh \

	tc_vlan_modify.sh \

	vxlan_asymmetric_ipv6.sh \

	vxlan_asymmetric.sh \

tools/testing/selftests/net/forwarding/tc_tunnel_key.sh

0 → 100755
+161 −0
Original line number Diff line number Diff line 
#!/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 ip_flags nofrag action drop

	tc filter add dev $swp1 ingress protocol ip pref 101 handle 101 \

		flower ip_flags firstfrag action drop

	tc filter add dev $swp1 ingress protocol ip pref 102 handle 102 \

		flower 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