Commit 450b0b84 authored by Nikolay Aleksandrov's avatar Nikolay Aleksandrov Committed by Jakub Kicinski
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selftests: net: lib: add support for IPv6 mcast packet test 



In order to test an IPv6 multicast packet we need to pass different tc
and mausezahn protocols only, so add a simple check for the destination
address which decides if we should generate an IPv4 or IPv6 mcast
packet.

Signed-off-by: default avatarNikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 537e4825

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

+11 −3
Original line number Diff line number Diff line
@@ -1280,14 +1280,22 @@ mcast_packet_test() 
	local host1_if=$4

	local host2_if=$5

	local seen=0

	local tc_proto="ip"

	local mz_v6arg=""



	# basic check to see if we were passed an IPv4 address, if not assume IPv6

	if [[ ! $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then

		tc_proto="ipv6"

		mz_v6arg="-6"

	fi



	# Add an ACL on `host2_if` which will tell us whether the packet

	# was received by it or not.

	tc qdisc add dev $host2_if ingress

	tc filter add dev $host2_if ingress protocol ip pref 1 handle 101 \

	tc filter add dev $host2_if ingress protocol $tc_proto pref 1 handle 101 \

		flower ip_proto udp dst_mac $mac action drop



	$MZ $host1_if -c 1 -p 64 -b $mac -A $src_ip -B $ip -t udp "dp=4096,sp=2048" -q

	$MZ $host1_if $mz_v6arg -c 1 -p 64 -b $mac -A $src_ip -B $ip -t udp "dp=4096,sp=2048" -q

	sleep 1



	tc -j -s filter show dev $host2_if ingress \
@@ -1297,7 +1305,7 @@ mcast_packet_test() 
		seen=1

	fi



	tc filter del dev $host2_if ingress protocol ip pref 1 handle 101 flower

	tc filter del dev $host2_if ingress protocol $tc_proto pref 1 handle 101 flower

	tc qdisc del dev $host2_if ingress



	return $seen