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    different driver needed?

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    • Bob.DigB
      Bob.Dig LAYER 8
      last edited by Bob.Dig

      I want to try SR-IOV in Hyper-V with pfSense. Enabling it, especially in a virtual switch, made some problems.
      But if I have read correct, pfSense should use ixv driver instead of just ix driver for my NIC. So maybe this is the problem.
      Can I change the driver used myself and if how? Both are in boot/kernel.

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      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by stephenw10

        ixv has a different set of pci-ids it will attach to. The card will need to appears as one of those.

        See: https://github.com/pfsense/FreeBSD-src/blob/devel-12/sys/dev/ixgbe/if_ixv.c#L62

        And: https://github.com/pfsense/FreeBSD-src/blob/devel-12/sys/dev/ixgbe/ixgbe_type.h#L85

        Steve

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        • Bob.DigB
          Bob.Dig LAYER 8 @stephenw10
          last edited by

          @stephenw10 So I guess it should work ootb if I change something about the NIC in pfSense, no "reinstalling" would be required.

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          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by stephenw10

            If you just change the NIC type in Hyper-V I would expect pfSense to fail to boot because the assigned ix NICs would no longer be present. It would stop in the console and you would have to re-assign the interfaces there to the new ixv NICs.

            Steve

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