Is pass trough of single NIC possible in this setup?

B

Browerowy

New Member
Mar 23, 2023
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Hi, I try to setup proxmox on HP t730 thin client with Dell I350-T4 Ethernet card. I can't find any straight confirmation about possibility of passing through of single NIC on that setup. I enabled IOMMU and when I list IOMMU groups it looks like all I350 NICs are in one group. In BIOS there are really few options and only thing connected to virtualization is "enabling virtualization".

Also I want to know if enabling SR-IOV is an option on that setup. I know that the card itself should allow that after upgrading firmware which I done. But unfortunately here also I don't have an option to enable it from BIOS, and epct64e tool from Intel can't find any supported devices.
 
Last edited:
if both ports are in the same iommu group, you can't pass one through and use one for the host, that won't work

for sriov, just check if the relevant sysfs entries are there and activate it, see https://pve.proxmox.com/wiki/PCI(e)_Passthrough#_sr_iov

then check if the virtual functions are in their own iommu group
 
dcsapak said:
if both ports are in the same iommu group, you can't pass one through and use one for the host, that won't work

for sriov, just check if the relevant sysfs entries are there and activate it, see https://pve.proxmox.com/wiki/PCI(e)_Passthrough#_sr_iov

then check if the virtual functions are in their own iommu group
Click to expand...
It still not working. But I have a clue. Are
Code: 
Intel Corporation I350 Gigabit Network Connection (rev 01)
means that i have I350V1?
 
Browerowy said:
It still not working. But I have a clue. Are
Click to expand...
what exactly did you try and what was the result?

Browerowy said:
means that i have I350V1?
Click to expand...
i don't know exactly and i don't know if it's even relevant

here i have a :
Code: 
Intel Corporation I350 Gigabit Network Connection (rev 01)
too in my lspci ouptut and sriov works

can you post the output of 'lspci -vvv' ?
 
I checked that there is no /sys/bus/pci/devices/<nic_pci_addr>/sriov_numvfs files, nor I can create it. I also tried reinstall igb kernel moule with max_vfs=7 parameter. Result was that I still not have SR-IOV capability. I will provide output of lspci -vvv tomorrow when I could log to this machine.

My idea was that rev 01 may indicate that this is a V1 type I350 NIC wich I found somewhere that not have SR-IOV, since I checked again version of my NIC FW and it is 21.5.9 and according to release notes dell enable SR-IOV in their I350 cards in FW release 15.0.0.
 
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Code: 
01:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)

        Subsystem: Intel Corporation Ethernet Server Adapter I350-T4

        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+

        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-

        Latency: 0, Cache Line Size: 64 bytes

        Interrupt: pin A routed to IRQ 36

        IOMMU group: 1

        Region 0: Memory at fe600000 (32-bit, non-prefetchable) [size=1M]

        Region 3: Memory at fe90c000 (32-bit, non-prefetchable) [size=16K]

        Expansion ROM at fe880000 [disabled] [size=512K]

        Capabilities: [40] Power Management version 3

                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)

                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=1 PME-

        Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+

                Address: 0000000000000000  Data: 0000

                Masking: 00000000  Pending: 00000000

        Capabilities: [70] MSI-X: Enable+ Count=10 Masked-

                Vector table: BAR=3 offset=00000000

                PBA: BAR=3 offset=00002000

        Capabilities: [a0] Express (v2) Endpoint, MSI 00

                DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us

                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 0.000W

                DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+

                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-

                        MaxPayload 512 bytes, MaxReadReq 512 bytes

                DevSta: CorrErr+ NonFatalErr- FatalErr- UnsupReq+ AuxPwr+ TransPend-

                LnkCap: Port #0, Speed 5GT/s, Width x4, ASPM L0s L1, Exit Latency L0s <4us, L1 <32us

                        ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+

                LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes, Disabled- CommClk+

                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-

                LnkSta: Speed 5GT/s (ok), Width x4 (ok)

                        TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+ NROPrPrP- LTR+

                         10BitTagComp- 10BitTagReq- OBFF Not Supported, ExtFmt- EETLPPrefix-

                         EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-

                         FRS- TPHComp- ExtTPHComp-

                         AtomicOpsCap: 32bit- 64bit- 128bitCAS-

                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR- OBFF Disabled,

                         AtomicOpsCtl: ReqEn-

                LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-

                         Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-

                         Compliance De-emphasis: -6dB

                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete- EqualizationPhase1-

                         EqualizationPhase2- EqualizationPhase3- LinkEqualizationRequest-

                         Retimer- 2Retimers- CrosslinkRes: unsupported

        Capabilities: [e0] Vital Product Data

                Product Name: I350 GbE Controller\x00

                Read-only fields:

                        [V0] Vendor specific: FFV21.5.9

                        [PN] Part number: T34F4

                        [MN] Manufacture ID: 1028

                        [V1] Vendor specific: DSV1028VPDR.VER1.0

                        [V3] Vendor specific: DTINIC

                        [V4] Vendor specific: DCM1001008FC52101008FC53201008FC54301008FC5

                        [V5] Vendor specific: NPY4

                        [V6] Vendor specific: PMT13

                        [V7] Vendor specific: NMVIntel Corp

                        [RV] Reserved: checksum good, 2 byte(s) reserved

                End

        Capabilities: [100 v2] Advanced Error Reporting

                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-

                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-

                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-

                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+

                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+

                AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn- ECRCChkCap+ ECRCChkEn-

                        MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-

                HeaderLog: 00000000 00000000 00000000 00000000

        Capabilities: [140 v1] Device Serial Number a0-36-9f-ff-ff-1c-77-d8

        Capabilities: [150 v1] Alternative Routing-ID Interpretation (ARI)

                ARICap: MFVC- ACS-, Next Function: 1

                ARICtl: MFVC- ACS-, Function Group: 0

        Capabilities: [1a0 v1] Transaction Processing Hints

                Device specific mode supported

                Steering table in TPH capability structure

        Capabilities: [1c0 v1] Latency Tolerance Reporting

                Max snoop latency: 0ns

                Max no snoop latency: 0ns

        Capabilities: [1d0 v1] Access Control Services

                ACSCap: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamFwd- EgressCtrl- DirectTrans-

                ACSCtl: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamFwd- EgressCtrl- DirectTrans-

        Kernel driver in use: igb

        Kernel modules: igb

that is the output for one NIC. Whole output was too long to past it here. If some other section can be also important i will past it later.
 
Code: 
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port
        DeviceName:  Onboard IGD
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        IOMMU group: 1

00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Kaveri P2P Bridge for GFX PCIe Port [1:0] (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 25
        IOMMU group: 1
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
        I/O behind bridge: 0000f000-00000fff [disabled]
        Memory behind bridge: fe300000-fe9fffff [size=7M]
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff [disabled]
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR+ NoISA- VGA- VGA16+ MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: [50] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [58] Express (v2) Root Port (Slot+), MSI 00
                DevCap: MaxPayload 512 bytes, PhantFunc 0
                        ExtTag+ RBE+
                DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq-
                        RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
                        MaxPayload 512 bytes, MaxReadReq 512 bytes
                DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
                LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <512ns, L1 <64us
                        ClockPM- Surprise- LLActRep+ BwNot+ ASPMOptComp+
                LnkCtl: ASPM L1 Enabled; RCB 64 bytes, Disabled- CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 5GT/s (downgraded), Width x4 (downgraded)
                        TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- Surprise-
                        Slot #0, PowerLimit 0.000W; Interlock- NoCompl+
                SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- LinkChg-
                        Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
                SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
                        Changed: MRL- PresDet- LinkState-
                RootCap: CRSVisible+
                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna+ CRSVisible+
                RootSta: PME ReqID 0000, PMEStatus- PMEPending-
                DevCap2: Completion Timeout: Range ABCD, TimeoutDis+ NROPrPrP- LTR-
                         10BitTagComp- 10BitTagReq- OBFF Not Supported, ExtFmt+ EETLPPrefix+, MaxEETLPPrefixes 1
                         EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
                         FRS- LN System CLS Not Supported, TPHComp- ExtTPHComp- ARIFwd-
                         AtomicOpsCap: Routing- 32bit- 64bit- 128bitCAS-
                DevCtl2: Completion Timeout: 65ms to 210ms, TimeoutDis- LTR- OBFF Disabled, ARIFwd-
                         AtomicOpsCtl: ReqEn- EgressBlck-
                LnkCap2: Supported Link Speeds: 2.5-8GT/s, Crosslink- Retimer- 2Retimers- DRS-
                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete- EqualizationPhase1-
                         EqualizationPhase2- EqualizationPhase3- LinkEqualizationRequest-
                         Retimer- 2Retimers- CrosslinkRes: unsupported
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
                Address: 00000000fee00000  Data: 0000
        Capabilities: [b0] Subsystem: Hewlett-Packard Company Kaveri P2P Bridge for GFX PCIe Port [1:0]
        Capabilities: [b8] HyperTransport: MSI Mapping Enable+ Fixed+
        Capabilities: [100 v1] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
        Capabilities: [270 v1] Secondary PCI Express
                LnkCtl3: LnkEquIntrruptEn- PerformEqu-
                LaneErrStat: 0
        Kernel driver in use: pcieport

This are other then NICs devices from the same IOMMU group.
 
Code: 
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Complex
        Subsystem: Hewlett-Packard Company Family 15h (Models 30h-3fh) Processor Root Complex
        Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0

00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) I/O Memory Management Unit
        Subsystem: Hewlett-Packard Company Family 15h (Models 30h-3fh) I/O Memory Management Unit
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Interrupt: pin A routed to IRQ 24
        Capabilities: [40] Secure device <?>
        Capabilities: [54] MSI: Enable+ Count=1/4 Maskable- 64bit+
                Address: 00000000fee04004  Data: 0021
        Capabilities: [64] HyperTransport: MSI Mapping Enable+ Fixed+
 
What is the (whole, complete) output of for d in /sys/kernel/iommu_groups/*/devices/*; do n=${d#*/iommu_groups/*}; n=${n%%/*}; printf 'IOMMU group %s ' "$n"; lspci -nns "${d##*/}"; done?
 
Code: 
IOMMU Group 0 00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri [Radeon R7 Graphics] [1002:131c]
IOMMU Group 0 00:01.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri HDMI/DP Audio Controller [1002:1308]
IOMMU Group 10 00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 0 [1022:141a]
IOMMU Group 10 00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 1 [1022:141b]
IOMMU Group 10 00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 2 [1022:141c]
IOMMU Group 10 00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 3 [1022:141d]
IOMMU Group 10 00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 4 [1022:141e]
IOMMU Group 10 00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Function 5 [1022:141f]
IOMMU Group 1 00:02.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port [1022:1424]
IOMMU Group 1 00:02.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Kaveri P2P Bridge for GFX PCIe Port [1:0] [1022:1425]
IOMMU Group 1 01:00.0 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
IOMMU Group 1 01:00.1 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
IOMMU Group 1 01:00.2 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
IOMMU Group 1 01:00.3 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
IOMMU Group 2 00:03.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port [1022:1424]
IOMMU Group 2 00:03.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port [1022:1426]
IOMMU Group 2 02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
IOMMU Group 3 00:04.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port [1022:1424]
IOMMU Group 4 00:10.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller [1022:7814] (rev 09)
IOMMU Group 4 00:10.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller [1022:7814] (rev 09)
IOMMU Group 5 00:11.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] [1022:7801] (rev 40)
IOMMU Group 6 00:12.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller [1022:7807] (rev 11)
IOMMU Group 6 00:12.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller [1022:7808] (rev 11)
IOMMU Group 7 00:13.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB OHCI Controller [1022:7807] (rev 11)
IOMMU Group 7 00:13.2 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller [1022:7808] (rev 11)
IOMMU Group 8 00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:780b] (rev 16)
IOMMU Group 8 00:14.1 IDE interface [0101]: Advanced Micro Devices, Inc. [AMD] FCH IDE Controller [1022:780c]
IOMMU Group 8 00:14.2 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller [1022:780d] (rev 01)
IOMMU Group 8 00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:780e] (rev 11)
IOMMU Group 9 00:14.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] FCH PCI Bridge [1022:780f] (rev 40)
 
Browerowy said:
IOMMU Group 1 00:02.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port [1022:1424] IOMMU Group 1 00:02.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Kaveri P2P Bridge for GFX PCIe Port [1:0] [1022:1425] IOMMU Group 1 01:00.0 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01) IOMMU Group 1 01:00.1 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01) IOMMU Group 1 01:00.2 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01) IOMMU Group 1 01:00.3 Ethernet controller [0200]: Intel Corporation I350 Gigabit Network Connection [8086:1521] (rev 01)
Click to expand...
All four functions (ports) are in the same IOMMU group and therefore can only be used together by either one VM or by the host. You cannot passthrough one to a VM and still use the others for something else.

The other network controller is alone in a group (Host and PCI bridges can be ignored) if you want to passthrough a single network controller/port:
Browerowy said:
IOMMU Group 2 00:03.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port [1022:1424] IOMMU Group 2 00:03.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Family 15h (Models 30h-3fh) Processor Root Port [1022:1426] IOMMU Group 2 02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
Click to expand...
Alternatively, just use virtual network bridges for each physical network port instead of PCIe passthrough with all its caveats.
 
Yes, that are the options I'm using right now/considering. I read that there is also some patch that allows slicing the IOMMU groups but it is considered not safe, so I rather not use that solution. Last thing I want to acknowledge is that my setup is 100% not SR-IOV capable and why (is it a problem with MOBO or NICs). Since I bought that card hoping that after FW upgrade it should have SR-IOV.

P.S. I read that this Realtek is considered not stable so my initial plan was to not use it.
 
Last edited:
I was investigating it further today. First, epct64e not recognize my NICs as supported also on Windows. So it looks like it officially not supporting OEM versions. Then I finally check the content of the eeprom according to that post, and yes, my NICs had IOV Enable bit set to 0. Which is strange for me sinc according to this release note support for SR-IOV should be enabled in dell FW few years ago. Now I'm curious about enabling it by toggling that bit using ethtool.
 
Last edited:
According to this release note FW 20.0.16: "Resolved an issue with Intel(R) Ethernet i350 based adapters in which SR-IOV was defaulted to the ON state." . So I suspect that they enable SR-IOV in 15.0.27 and then disable it by default using IOV enable bit in 20.0.16. So Probably I will be able to reenable it again using BIOS on some Dell server board, I can try my luck using ethtool. Now I check that theory by downgrading to FW 19.something. If SR-IOV will be enabled in that FW version and IOV enable bit will also be set I will upgrade it again and use the ethtool togled it in newest FW.
 
@dcsapak I have one more question according my setup. Can I check somehow if my MOBO is PCIe Bifurcation capable? I planning to install Google Coral m2 Dual and I want to know if i can use both cores, and pass them to HAOS.
 
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