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Hello,
I purchased from local reseller Intel I350-T2 NIC but it is missing SR-IOV capability.
According to I350-T2 specification SR-IOV capability should be on-board. How can I enable SR-IOV?
Is there an option to enable it in EEPROM or replace EEPROM?
pci id of interface:
8086:1521 (rev 01) Subsystem: 8086:5002
Thank you
e0thtool -i eth7
driver: igb
version: 3.2.10-k
firmware-version: 1.5-2
bus-info: 0000:04:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
$ sudo lspci -s 04:00.0 -v
04:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
Subsystem: Intel Corporation Ethernet Server Adapter I350-T2
Flags: bus master, fast devsel, latency 0, IRQ 38
Memory at df200000 (32-bit, non-prefetchable) [size=1M]
Memory at df1f8000 (32-bit, non-prefetchable) [size=16K]
Expansion ROM at df100000 [disabled] [size=512K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Capabilities: [70] MSI-X: Enable+ Count=10 Masked-
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [e0] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number a0-36-9f-ff-ff-04-80-70
Capabilities: [150] Alternative Routing-ID Interpretation (ARI)
Capabilities: [1a0] Transaction Processing Hints
Capabilities: [1c0] Latency Tolerance Reporting
Capabilities: [1d0] Access Control Services
Kernel driver in use: igb
Kernel modules: igb
More detailed output:
$ sudo lspci -s 04:00.0 -vvv -n
04:00.0 0200: 8086:1521 (rev 01)
Subsystem: 8086:5002
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 38
Region 0: Memory at df200000 (32-bit, non-prefetchable) [size=1M]
Region 3: Memory at df1f8000 (32-bit, non-prefetchable) [size=16K]
Expansion ROM at df100000 [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+
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 # 0, Speed 5GT/s, Width x4, ASPM L0s L1, Latency L0 <4us, L1 <32us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s, Width x4, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
DevCtl2: Completion Timeout: 65ms to 210ms, 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: -6dB
Capabilities: [e0] Vital Product Data
Product Name: I350 GbE Controller
Read-only fields:
[V0] Vendor specific: FFV13.0.0
[PN] Part number: G15136
[MN] Manufacture ID: 31 30 32 38
[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, 0 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- NonFatalErr+
CEMsk: RxErr+ BadTLP+ BadDLLP+ Rollover+ Timeout+ NonFatalErr+
AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
Capabilities: [140 v1] Device Serial Number a0-36-9f-ff-ff-04-80-70
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
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Thanx for posting your question.
That device definitely supports SR-IOV - I've used it myself .
For SR-IOV to function, it requires a number of components to all work together, including the platform BIOS, Chipset, Operating System and the SR-IOV device itself.
If the BIOS or OS doesn't support SR-IOV it will never show up. Both must suppor the feature for even lspci to show the functionality. I'd recommend that you check to see if all the other pieces support SR-IOV.
thanx,
Patrick
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Hello Patrick,
I used Intel 10GB interfaces with SR-IOV capability on same machine running Ubntu 12.04.3 server.
Now I evaluating i350-T2 on same machine and I double checked BIOS -- SR-IOV global setting is "enable".
I boot system with "intel_iommu=on" kernel parameter.
Any idea why i350-T2 device does not report its SR-IOV capability?
Can I check it in EEPROM?
Thanks for your help,
Igor
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There is an additional requirment, one that is not obvous and is very frustrating...
The device - in your case the I350-T2, must be in a slot that support SR-IOV. Some server designs have some PCIe connecors not connected directly to the Chipset and did not use a PCIe switch that supports SR-IOV.
This doc is for 10G, but explains some of these issues:
https://www-ssl.intel.com/content/www/us/en/network-adapters/10-gigabit-network-adapters/ethernet-x520-sr-iov-red-hat-tech-brief.html Intel® 10 GbE, PCI-SIG* SR-IOV, and Sharing Spec on Linux*
Try putting the device in a different slot (try the one you used for 10G). If that doesn't work then please provide more information on the plat form you are using, uncluding Model, Bios Version, driver versions and kernel log and we'll see what we can do.
- Patrick
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Hello Patrick,
I have checked other slot -- same result. Both slots are PCIe v 2, x8.
Platform is Dell PowerEdge R610, BIOS version 6.1.0.
It is running Ubuntu server 12.04.3 LTS x86_64 with kernel 3.2.0-54-generic.
Driver: igb version: 3.2.10-k firmware-version: 1.5-2
Please see attached link to log and debug files.
http://temp-share.com/show/3Yg8b3X2x Temp Share : debug.tgz | Free temporary file hosting
Thanks for your help,
Igor
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Hi Igor,
I am assuming you purchased this NIC from Dell? I've other posts on this. The bottom-line is that currently (I hear rumors this may be changing) the Intel I350 NICs that Dell sells have SR-IOV disabled.
We (Intel) has no control over this. We make custom versions of our devices for several OEMs, who determine which features they wish to use. In this case the OEM decided not to initially support SR-IOV on Intel's I350 devices.
If you were to purchase a retail version of an I350 you would find that SR-IOV would work fine. Though that might void your system warranty with you server manufacturer since it wouldn't be officially blessed hardware.
I would recommend you contact Dell for advice and instructions.
- Patrick
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I thought OEM have to change the subsystem vendor ID like in other posts on same issue.
Ok, I will check with my local reseller regarding this NIC OEM..
Thanks a lot Patrick for your help
Igor

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