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DrDoof
14b2ce1c49
A reserved-multicast trap goes to the port named in EXT_CPU_CTRL, which names no port out of reset, so trapped frames were dropped at ingress. trap_init() points it at the CPU port once at startup, and trap_rma_set() changes only the action field of an RMA register. A trapped frame arrives without the VLAN tag a forwarded one gets, so TRAP_RX_BODY() gives the offset of the payload for both forms. STP now traps its address while it runs instead of steering it with a static L2 entry per VLAN, so turning it on no longer walks the VLAN table and a pvid change no longer needs stp off and on. With STP off the flooding entries are restored as before. A trapped BPDU passes the tagged-only ingress filter that drops a forwarded one, so the stp_setup() warning about such ports goes.