From: Petr Machata petrm@mellanox.com Date: Sun, 08 Jul 2018 19:58:55 +0200
The function do_test_span_vlan_dir_ips() is used for testing whether mirrored packets are VLAN-encapsulated. But since it only considers VLAN encapsulation, it may end up matching unmirrored ARP traffic as well. One consequence is a rare failure of mirror_gre_vlan_bridge_1q's test_gretap_untagged_egress. Decreasing ping cadence in mirror_test() makes the problem easily reproducible.
Therefore tighten up the match criterion to only count those 802.1q packets where the next header is IP.
Signed-off-by: Petr Machata petrm@mellanox.com
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