Date: Tue, 8 Oct 2024 22:33:06 -0600 From: John Nielsen <lists@jnielsen.net> To: freebsd-net@freebsd.org Cc: np@freebsd.org Subject: Traffic between cxgbe VFs and/or PF on a host Message-ID: <6BC00399-9D4C-4893-9FE4-4F99BD295909@jnielsen.net>
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Hi- I=E2=80=99m running a FreeBSD 14-STABLE host with a Chelstio T520. I = have a bhyve VM (also running 14-STABLE) to which I have assigned a VF = of the NIC. That is all working as expected; the host can pass traffic = using the PF cxl0 and the guest can pass traffic using the VF cxlv0. = However the host cannot communicate with the guest. I am looking in to = the possibility of enabling 802.1qbg / VEPA / reflective relay on the = switch port but I=E2=80=99d like to know if the T5 can do that switching = itself without sending the packets over the wire. The marketing material = says the card "integrates a high performance packet switch=E2=80=9D but = I don=E2=80=99t know how to configure that functionality on FreeBSD or = if this use case is supported. Can anyone shed some light on that? The other alternative would be to wire up the second port but if I can = get away with not needing to use another SFP+ port on the switch for = this that would be ideal. Thanks! JN
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