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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: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Nikolay Aleksandrov 2020-11-03 19:23:58 +02:00 committed by Jakub Kicinski
parent 537e48259e
commit 450b0b84c6
1 changed files with 11 additions and 3 deletions
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14
tools/testing/selftests/net/forwarding/lib.sh
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@ -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