feat(virtio) Implement CTRL_RX support for virtio-net#669
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ytakano
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Mar 2, 2026
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Description
Reference(https://github.com/openbsd/src/blob/bd322c589650b5d3867e219910dae322f62cb2fc/sys/dev/pv/if_vio.c#L2112)
I implemented vio_iff() with reference to OpenBSD’s if_vio.c. Previously, the NIC behavior was effectively biased toward receiving all packets (PROMISC/ALLMULTI). By adding CTRL_RX and MAC filter configuration, multicast reception is now limited to packets whose destination MAC addresses match registered entries. If unsupported or if configuration fails, it falls back to the previous behavior.
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