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ixgbe/igb: catch invalid VF settings

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Some ixgbe cards put an invalid VF device ID in the PCIe SR-IOV
capability.  The ixgbe driver is only valid for PFs or non SR-IOV
hardware.  It seems that the same problem could occur on igb hardware as
well, so if we discover we are trying to initialize a VF in ixbge_probe
or igb_probe, print an error and exit.

Based on a patch for ixgbe from Chris Wright <chrisw@sous-sol.org>.

Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Cc: Chris Wright <chrisw@sous-sol.org>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Gospodarek 2010-07-21 06:40:31 +00:00 committed by David S. Miller
parent 0577589cc1
commit bded64a7ff
2 changed files with 18 additions and 0 deletions
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9
drivers/net/igb/igb_main.c
View File

@ -1722,6 +1722,15 @@ static int __devinit igb_probe(struct pci_dev *pdev,
u16 eeprom_apme_mask = IGB_EEPROM_APME; u16 eeprom_apme_mask = IGB_EEPROM_APME;
u32 part_num; u32 part_num;
/* Catch broken hardware that put the wrong VF device ID in
* the PCIe SR-IOV capability.
*/
if (pdev->is_virtfn) {
WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
pci_name(pdev), pdev->vendor, pdev->device);
return -EINVAL;
}
err = pci_enable_device_mem(pdev); err = pci_enable_device_mem(pdev);
if (err) if (err)
return err; return err;

9
drivers/net/ixgbe/ixgbe_main.c
View File

@ -6492,6 +6492,15 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
#endif #endif
u32 part_num, eec; u32 part_num, eec;
/* Catch broken hardware that put the wrong VF device ID in
* the PCIe SR-IOV capability.
*/
if (pdev->is_virtfn) {
WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
pci_name(pdev), pdev->vendor, pdev->device);
return -EINVAL;
}
err = pci_enable_device_mem(pdev); err = pci_enable_device_mem(pdev);
if (err) if (err)
return err; return err;