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authorDonald Dutile <ddutile@redhat.com>2012-11-06 00:20:37 +0400
committerBjorn Helgaas <bhelgaas@google.com>2012-11-10 08:37:39 +0400
commitbff73156d3ad661655e6d9ef04c2284cf3abb0f1 (patch)
treea26dc79db184a6977919909c3cc2dd653efe83f3 /drivers/pci/pci.h
parent1789382a72a537447d65ea4131d8bcc1ad85ce7b (diff)
downloadlinux-bff73156d3ad661655e6d9ef04c2284cf3abb0f1.tar.xz
PCI: Provide method to reduce the number of total VFs supported
Some implementations of SRIOV provide a capability structure value of TotalVFs that is greater than what the software can support. Provide a method to reduce the capability structure reported value to the value the driver can support. This ensures sysfs reports the current capability of the system, hardware and software. Example for its use: igb & ixgbe -- report 8 & 64 as TotalVFs, but drivers only support 7 & 63 maximum. Signed-off-by: Donald Dutile <ddutile@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pci.h')
-rw-r--r--drivers/pci/pci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 6f6cd145bb7e..553bbba76eec 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -240,6 +240,7 @@ struct pci_sriov {
u16 stride; /* following VF stride */
u32 pgsz; /* page size for BAR alignment */
u8 link; /* Function Dependency Link */
+ u16 drvttl; /* max num VFs driver supports */
struct pci_dev *dev; /* lowest numbered PF */
struct pci_dev *self; /* this PF */
struct mutex lock; /* lock for VF bus */