tests/vlan: add static L2 forwarding tests (mac-learning, BUM flood, static FDB)#26476
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…static FDB) Signed-off-by: Anant Kishor Sharma <anant.kishor-sharma@hpe.com>
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Description of PR
Summary:
Adds data-plane sonic-mgmt tests for config-driven static L2 forwarding (per-VLAN), covering the three independent sub-features:
SAI_VLAN_ATTR_LEARN_DISABLE)SAI_VLAN_ATTR_{UNKNOWN_UNICAST,UNKNOWN_MULTICAST,BROADCAST}_FLOOD_CONTROL_TYPE)SAI_FDB_ENTRY_TYPE_STATIC)Each sub-feature is toggled through the CONFIG_DB (the same path used by
config apply-patch/ gNMI / theconfig macCLI) and verified from the data plane with PTF. Every test restores the default (learning on, flooding on, no static FDB) on teardown.This is the test companion of the config-driven static L2 forwarding feature. HLD: sonic-net/SONiC#2468.
Type of change
Back port request
Tested branch
Test result
Validated on a t0 testbed with the companion swss changes deployed — 3 passed:
test_mac_learning_disable,test_broadcast_flood_disable,test_static_fdb_forwarding.Approach
What is the motivation for this PR?
Add sonic-mgmt data-plane coverage for the config-driven static L2 forwarding feature so the three per-VLAN sub-features are verified end-to-end (CONFIG_DB -> orchagent -> SAI -> data plane).
How did you do it?
Three test classes, one per sub-feature (
TestVlanMacLearningDisable,TestVlanBumFloodDisable,TestVlanStaticFdb). Config is applied viasonic-db-cli CONFIG_DB; behavior is verified from the data plane with PTF (send/verify_packets/verify_no_packet_any) plusfdbshow. Each test restores the default state on teardown.How did you verify/test it?
Ran on a t0 testbed with the companion swss changes deployed — all 3 tests passed. The test selects a VLAN with at least two untagged members and skips gracefully if none is available.
Any platform specific information?
None
Supported testbed topology if it's a new test case?
t0
Documentation
No new documentation; the feature design is covered by the HLD (sonic-net/SONiC#2468).