Re: Question: why my 82599 nic doesn't show Virutal function or SR-IOV

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I don't see an SR-IOV capability in your lspci output.  Are you sure
your 82599 device supports SR-IOV?

The SR-IOV capability is a PCIe extended capability, which means it
would appear in the 0x100-0xfff extended config space.  If your
platform doesn't support extended config space, you wouldn't see it.
For example, you might not have MMCONFIG enabled.

On Wed, Dec 26, 2012 at 8:58 AM, Jiang Liu <liuj97@xxxxxxxxx> wrote:
> Hi Lei,
>         Have you passed the module parameter to enable SR-IOV functions
> when loading the ixgbe module?
>
> max_vfs:Maximum number of virtual functions to allocate per physical function (uint)
>
> On 12/26/2012 10:26 PM, lei yang wrote:
>> I don't know if I'm wrong to ask this question here,if I'm wrong,
>> please route me to other list.
>>
>>
>> Lei
>>
>> root@intel_5500_server:~# lspci --version
>> lspci version 3.1.9
>> root@intel_5500_server:~# lspci -vv -s "03:00.0"
>> 03:00.0 Ethernet controller: Intel Corporation 82599EB 10-Gigabit
>> SFI/SFP+ Network Connection (rev 01)
>>       Subsystem: Intel Corporation Ethernet Server Adapter X520-1
>>       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 26
>>       Region 0: Memory at b1900000 (64-bit, prefetchable) [size=512K]
>>       Region 2: I/O ports at 2000 [size=32]
>>       Region 4: Memory at b1980000 (64-bit, prefetchable) [size=16K]
>>       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=64 Masked-
>>               Vector table: BAR=4 offset=00000000
>>               PBA: BAR=4 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+
>>               DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
>>                       RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-
>>                       MaxPayload 256 bytes, MaxReadReq 512 bytes
>>               DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
>>               LnkCap: Port #2, Speed 5GT/s, Width x8, ASPM L0s, Latency L0 <1us, L1 <8us
>>                       ClockPM- Surprise- LLActRep- BwNot-
>>               LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
>>                       ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
>>               LnkSta: Speed 5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive-
>> BWMgmt- ABWMgmt-
>>               DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
>>               DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
>>               LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-,
>> Selectable De-emphasis: -6dB
>>                        Transmit Margin: Normal Operating Range, EnterModifiedCompliance-
>> ComplianceSOS-
>>                        Compliance De-emphasis: -6dB
>>               LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-,
>> EqualizationPhase1-
>>                        EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
>>       Kernel driver in use: ixgbe
>>       Kernel modules: ixgbe
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