Currently, SR-IOV VFs can only be configured through sysfs, if a driver
is loaded for the device. Sometimes we don't care about the PF, but only
want to assign VFs to guests, which is now possible with this patch.
Signed-off-by: Maximilian Heyne <mheyne@xxxxxxxxx>
---
drivers/pci/pci-stub.c | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c
index 886fb35..aa007c3 100644
--- a/drivers/pci/pci-stub.c
+++ b/drivers/pci/pci-stub.c
@@ -32,10 +32,27 @@ static int pci_stub_probe(struct pci_dev *dev, const struct pci_device_id *id)
return 0;
}
+static void pci_stub_remove(struct pci_dev *dev)
+{
+ pci_disable_sriov(dev);
+}
+
+static int pci_stub_sriov_configure(struct pci_dev *dev, int num_vfs)
+{
+ if (!num_vfs) {
+ pci_disable_sriov(dev);
+ return 0;
+ }
+
+ return pci_enable_sriov(dev, num_vfs);
+}
+
static struct pci_driver stub_driver = {
- .name = "pci-stub",
- .id_table = NULL, /* only dynamic id's */
- .probe = pci_stub_probe,
+ .name = "pci-stub",
+ .id_table = NULL, /* only dynamic IDs */
+ .probe = pci_stub_probe,
+ .remove = pci_stub_remove,
+ .sriov_configure = pci_stub_sriov_configure,
};
static int __init pci_stub_init(void)
--
2.7.4
