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Test that when the hash policy is set to custom, traffic is distributed only according to the inner fields set in the fib_multipath_hash_fields sysctl. Each time set a different field and make sure traffic is only distributed when the field is changed in the packet stream. The test only verifies the behavior of IPv4/IPv6 overlays on top of an IPv4 underlay network. A subsequent patch will do the same with an IPv6 underlay network. Example output: # ./gre_custom_multipath_hash.sh TEST: ping [ OK ] TEST: ping6 [ OK ] INFO: Running IPv4 overlay custom multipath hash tests TEST: Multipath hash field: Inner source IP (balanced) [ OK ] INFO: Packets sent on path1 / path2: 6601 / 6001 TEST: Multipath hash field: Inner source IP (unbalanced) [ OK ] INFO: Packets sent on path1 / path2: 0 / 12600 TEST: Multipath hash field: Inner destination IP (balanced) [ OK ] INFO: Packets sent on path1 / path2: 6802 / 5802 TEST: Multipath hash field: Inner destination IP (unbalanced) [ OK ] INFO: Packets sent on path1 / path2: 12601 / 1 TEST: Multipath hash field: Inner source port (balanced) [ OK ] INFO: Packets sent on path1 / path2: 16430 / 16344 TEST: Multipath hash field: Inner source port (unbalanced) [ OK ] INFO: Packets sent on path1 / path2: 0 / 32772 TEST: Multipath hash field: Inner destination port (balanced) [ OK ] INFO: Packets sent on path1 / path2: 16430 / 16343 TEST: Multipath hash field: Inner destination port (unbalanced) [ OK ] INFO: Packets sent on path1 / path2: 0 / 32772 INFO: Running IPv6 overlay custom multipath hash tests TEST: Multipath hash field: Inner source IP (balanced) [ OK ] INFO: Packets sent on path1 / path2: 6702 / 5900 TEST: Multipath hash field: Inner source IP (unbalanced) [ OK ] INFO: Packets sent on path1 / path2: 0 / 12601 TEST: Multipath hash field: Inner destination IP (balanced) [ OK ] INFO: Packets sent on path1 / path2: 5751 / 6851 TEST: Multipath hash field: Inner destination IP (unbalanced) [ OK ] INFO: Packets sent on path1 / path2: 12602 / 1 TEST: Multipath hash field: Inner flowlabel (balanced) [ OK ] INFO: Packets sent on path1 / path2: 8364 / 8065 TEST: Multipath hash field: Inner flowlabel (unbalanced) [ OK ] INFO: Packets sent on path1 / path2: 12601 / 0 TEST: Multipath hash field: Inner source port (balanced) [ OK ] INFO: Packets sent on path1 / path2: 16425 / 16349 TEST: Multipath hash field: Inner source port (unbalanced) [ OK ] INFO: Packets sent on path1 / path2: 1 / 32770 TEST: Multipath hash field: Inner destination port (balanced) [ OK ] INFO: Packets sent on path1 / path2: 16425 / 16349 TEST: Multipath hash field: Inner destination port (unbalanced) [ OK ] INFO: Packets sent on path1 / path2: 2 / 32770 Signed-off-by: Ido Schimmel <idosch@nvidia.com> Acked-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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