[Bug 261746] SR-IOV in guests Windows Server 2022 mlx5en not work.

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 06 Feb 2022 15:10:27 UTC

--- Comment #2 from Michael <michael.adm@gmail.com> ---
Hypervisor: Windows Server 2019 (1809, 17763.2510)
Network adapters:
1.      Mellanox ConnectX-3 EN NIC for OCP; 10GbE; dual-port SFP+; PCIe3.0 x8;
IPMI disabled; R6 (Firmware version: 2.42.5000, Driver version: 5.50.14740.1)
2.      Mellanox ConnectX-4 Lx  -  HPE Ethernet 10/25Gb 2-port 640FLR-SFP28
Adapter (Firmware version: 14.26.1040, Driver version: 2.80.25134.0) 

Guest: FreeBSD-14.0-CURRENT-amd64-20220203-e2fe58d61b7-252875-disc1.iso
Generation: 2 (Configuration Version: 9.0)
No changes were made (installing the system out of the box).

Same behavior: SR-IOV enabled on ConnectX-3 VF mlx4en communication works,
SR-IOV enabled on ConnectX-4 VF mlx5en communication does not work.

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