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[Xen-users] How to find out if the installed NIC supports SR-IOV?

I am working with a westemere based server. I need to find out if the NIC installed there supports SR-IOV - what would be the best way to determine that?

Summary:        HP DL160 G6, 2 x Xeon E5620 2.40GHz, 15.7GB / 16GB 1333MHz, 1 x 500GB SATA
System:         HP ProLiant DL160 G6, C-2N/16/500, ySPEC 25.0
Processors:     2 x Xeon E5620 2.40GHz (HT enabled, 8 cores, 16 threads) - Gulftown B1, 64-bit, quad-core, 32nm, L3: 12MB
Memory:         15.7GB / 16GB 1333MHz == 4 x 4GB - 4GB PC3-10600 Hynix DDR3-1333 ECC Registered CL9 1Rx4
                                         14 x empty
Disk:           sda (ahci0): 500GB (1%) JBOD == 1 x 500GB 7.2K SATA/300 HP/WD RE4
Disk-Control:   ahci0: HP/Intel ICH10 82801J 6 Port SATA/300 AHCI
Chipset:        Intel 5520 IOH-36D B3 (Tylersburg), 82801JIR A0 (ICH10R)
Network:        eth0 (igb): HP NC362i/Intel 82576 Gigabit, 1Gb/s <full-duplex>
Network:        eth1 (igb): HP NC362i/Intel 82576 Gigabit, no carrier
OS:             YLinux 5.4.3, RHEL Server 5.4, Linux 2.6.18-164.2.1.el5 x86_64, 64-bit
BIOS:           HP O33 08/16/2010, rev 8.15

lspci shows this - 
05:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
        Subsystem: Hewlett-Packard Company NC362i Integrated Dual port Gigabit Server Adapter
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0, Cache Line Size: 256 bytes
        Interrupt: pin A routed to IRQ 82
        Region 0: Memory at fbe60000 (32-bit, non-prefetchable) [size=128K]
        Region 1: Memory at fbe40000 (32-bit, non-prefetchable) [size=128K]
        Region 2: I/O ports at e880 [size=32]
        Region 3: Memory at fbeb8000 (32-bit, non-prefetchable) [size=16K]
        Expansion ROM at fbe20000 [disabled] [size=128K]
        Capabilities: [40] Power Management version 3
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=1 PME-
        Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable-
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] MSI-X: Enable+ Mask- TabSize=10
                Vector table: BAR=3 offset=00000000
                PBA: BAR=3 offset=00002000
        Capabilities: [a0] Express Endpoint IRQ 0
                Device: Supported: MaxPayload 512 bytes, PhantFunc 0, ExtTag-
                Device: Latency L0s <512ns, L1 <64us
                Device: AtnBtn- AtnInd- PwrInd-
                Device: Errors: Correctable- Non-Fatal+ Fatal+ Unsupported-
                Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
                Device: MaxPayload 256 bytes, MaxReadReq 4096 bytes
                Link: Supported Speed 2.5Gb/s, Width x4, ASPM L0s L1, Port 2
                Link: Latency L0s <4us, L1 <64us

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