Oh and one other thing - on the cxgbe hardware, the netmap interfaces (ncxl) have a different MAC. things like broadcast traffic is duplicated to cxlX AND ncxlX. So, if you're only using netmap and you're testing promisc/bridging, you should bring /down/ the cxlX interface and leave ncxlX up - otherwise yeah, the cxbge MAC will duplicate packets in hardware, which halves the RX bandwidth available on the NIC /and/ chews CPU in FreeBSD as the normal ethernet input path drops all of those packets.
(I think the same thing holds with the virtual devices via SR-IOV on ixgbe hardware, btw..) -a _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
