[dpdk-dev] X520 virtual functions worked in 2.0 but fails in 2.1

[Van Haaren, Harry]

> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Jesper Wramberg
> Hi all,

Hi Jesper,

> I got a Dell PowerEdge R630 with an X520 NIC. I want to set up two VFs that
> use the first port on the NIC. I've done the following:

Your process is correct - nothing wrong here.

> EAL: PCI device 0000:03:10.0 on NUMA socket 0
> EAL:   probe driver: 8086:10ed rte_ixgbevf_pmd
> EAL:   PCI memory mapped at 0x7f08c0108000
> EAL:   PCI memory mapped at 0x7f08c010c000
> PMD: eth_ixgbevf_dev_init():  >>
> PMD: ixgbevf_intr_disable():  >>
> PMD: eth_ixgbevf_dev_init(): VF Initialization Failure: -100
> PMD: rte_eth_dev_init: driver rte_ixgbevf_pmd:
> eth_dev_init(vendor_id=0x32902 device_id=0x10ed) failed
> EAL: Error - exiting with code: 1
>   Cause: Requested device 0000:03:10.0 cannot be used

This is a recently-discovered regression from commit
0eb609239efdb52a1cea5abca5e3316052071d81 in the ixgbe driver - a fix is in progress.

The code in the diff below[1] of the above commit is the offender,
And adding the code back in solves the immediate problem here.

If this temporary fix doesn't work, please let me know.
Cheers, -Harry

[1] Snipped of diff that breaks DPDK PF / VF mailbox handling:
 @@ -1000,12 +1038,6 @@ eth_ixgbe_dev_init(struct rte_eth_dev *eth_dev)
                         eth_dev->data->port_id, pci_dev->id.vendor_id,
                         pci_dev->id.device_id);
 
 -       rte_intr_callback_register(&(pci_dev->intr_handle),
 -               ixgbe_dev_interrupt_handler, (void *)eth_dev);
 -
 -       /* enable uio intr after callback register */
 -       rte_intr_enable(&(pci_dev->intr_handle));
 -
         /* enable support intr */
         ixgbe_enable_intr(eth_dev);