[tests/vxlan]: Configure sport as part of vxlan switch configuration - #1364
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Signed-off-by: Aakash Tiwari <aaktiwar@cisco.com>
Aakash Tiwari (aakashtiwari2630-max)
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August 20, 2026 07:39
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Porting PR - sonic-net/sonic-mgmt#25839
Summary of changes:
The outer UDP source port in a Vxlan encapsulated packet is a hash derived value. In some platforms, based on the inner fields, the hash derived source port is getting programmed in the IANA assigned port range due to which the packet is not reaching PTF due to the OVS rules on the test server. This is specially evident in scale tests where the combination of inner fields are more.
As a fix for this, added logic to pass the source port and source port mask during vxlan switch configuration and set it under SWITCH_TABLE. Also, added logic to pass the source port and source port mask as runtime arguments.
Currently, for scale tests, test_scale_ecmp and test_vxlan_tunnel_route_scale, default source port and source port mask values are passed during vxlan switch configuration by default.