Commit 813f97a2 authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

selftests: forwarding: Add a tunnel-based test for L3 HW stats 



Add a selftest that uses an IPIP topology and tests that L3 HW stats
reflect the traffic in the tunnel.

Signed-off-by: default avatarPetr Machata <petrm@nvidia.com>
Signed-off-by: default avatarIdo Schimmel <idosch@nvidia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 32fb67a3

tools/testing/selftests/net/forwarding/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ TEST_PROGS = bridge_igmp.sh \ 
	gre_multipath_nh.sh \

	gre_multipath.sh \

	hw_stats_l3.sh \

	hw_stats_l3_gre.sh \

	ip6_forward_instats_vrf.sh \

	ip6gre_custom_multipath_hash.sh \

	ip6gre_flat_key.sh \

tools/testing/selftests/net/forwarding/hw_stats_l3_gre.sh

0 → 100755
+109 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



# Test L3 stats on IP-in-IP GRE tunnel without key.



# This test uses flat topology for IP tunneling tests. See ipip_lib.sh for more

# details.



ALL_TESTS="

	ping_ipv4

	test_stats_rx

	test_stats_tx

"

NUM_NETIFS=6

source lib.sh

source ipip_lib.sh



setup_prepare()

{

	h1=${NETIFS[p1]}

	ol1=${NETIFS[p2]}



	ul1=${NETIFS[p3]}

	ul2=${NETIFS[p4]}



	ol2=${NETIFS[p5]}

	h2=${NETIFS[p6]}



	ol1mac=$(mac_get $ol1)



	forwarding_enable

	vrf_prepare

	h1_create

	h2_create

	sw1_flat_create gre $ol1 $ul1

	sw2_flat_create gre $ol2 $ul2

	ip stats set dev g1a l3_stats on

	ip stats set dev g2a l3_stats on

}



cleanup()

{

	pre_cleanup



	ip stats set dev g1a l3_stats off

	ip stats set dev g2a l3_stats off



	sw2_flat_destroy $ol2 $ul2

	sw1_flat_destroy $ol1 $ul1

	h2_destroy

	h1_destroy



	vrf_cleanup

	forwarding_restore

}



ping_ipv4()

{

	RET=0



	ping_test $h1 192.0.2.18 " gre flat"

}



send_packets_ipv4()

{

	# Send 21 packets instead of 20, because the first one might trap and go

	# through the SW datapath, which might not bump the HW counter.

	$MZ $h1 -c 21 -d 20msec -p 100 \

	    -a own -b $ol1mac -A 192.0.2.1 -B 192.0.2.18 \

	    -q -t udp sp=54321,dp=12345

}



test_stats()

{

	local dev=$1; shift

	local dir=$1; shift



	local a

	local b



	RET=0



	a=$(hw_stats_get l3_stats $dev $dir packets)

	send_packets_ipv4

	b=$(busywait "$TC_HIT_TIMEOUT" until_counter_is ">= $a + 20" \

		     hw_stats_get l3_stats $dev $dir packets)

	check_err $? "Traffic not reflected in the counter: $a -> $b"



	log_test "Test $dir packets: $prot"

}



test_stats_tx()

{

	test_stats g1a tx

}



test_stats_rx()

{

	test_stats g2a rx

}



trap cleanup EXIT



setup_prepare

setup_wait



tests_run



exit $EXIT_STATUS