[Accton][minipack3bta] Disable src-mac==dst-mac drop for L3 loopback fwd test#1392
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[Accton][minipack3bta] Disable src-mac==dst-mac drop for L3 loopback fwd test#1392jeankuo wants to merge 1 commit into
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…fwd test AgentL3ForwardingTest.ttl255 injects a packet whose src MAC == dst MAC (both the interface/router MAC) out of a port, relies on loopback to re-ingress on a front panel port, and expects it to be L3-routed. On BCM78920 the front-port ingress drops a frame whose src MAC == dst MAC before routing, so the egress port never sees the packet and the test fails. Set sai_disable_srcmacqedstmac_ctrl: 0x1 in the minipack3bta agent config global section to disable this drop, allowing the loopback forwarding test to pass. Verified on-box: the same packet with a different src MAC routes and egresses correctly.
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Pre-submission checklist
pip install -r requirements-dev.txt && pre-commit installpre-commit runSummary
AgentL3ForwardingTest.ttl255injects a packet whose src MAC == dst MAC (the interface/router MAC) out of a port, relies on loopback to re-ingress on a front panel port, and expects it to be L3-routed to the next hop. On BCM78920 (minipack3bta) the front-port ingress drops a frame whose src MAC == dst MAC before routing, so the egress port never counts the packet and the test fails.This sets
sai_disable_srcmacqedstmac_ctrl: 0x1in the minipack3bta agent configbcm_device:0:globalsection to disable that drop.Test Plan
On-box (BCM78920 / SAI_15_4_EA_ODP): the
ttl255packet (src == dst MAC) injected via diagtxwith port loopback is dropped at ingress (RDBGC_0) and not routed; the same packet with a different src MAC routes and egresses correctly. With this config the drop is disabled so the loopback-based forwarding test can route.AgentL3ForwardingTest.ttl255_20260717_184821.zip