sfc: Enable VF's via a write to the sysfs file sriov_numvfs
This patch adds support for the use of sriov_configure on EF10
to enable Virtual Functions while the driver is loaded.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index fe8fe20..917b137 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -3046,6 +3046,26 @@
return rc;
}
+/* efx_pci_sriov_configure returns the actual number of Virtual Functions
+ * enabled on success
+ */
+#ifdef CONFIG_SFC_SRIOV
+static int efx_pci_sriov_configure(struct pci_dev *dev, int num_vfs)
+{
+ int rc;
+ struct efx_nic *efx = pci_get_drvdata(dev);
+
+ if (efx->type->sriov_configure) {
+ rc = efx->type->sriov_configure(efx, num_vfs);
+ if (rc)
+ return rc;
+ else
+ return num_vfs;
+ } else
+ return -EOPNOTSUPP;
+}
+#endif
+
static int efx_pm_freeze(struct device *dev)
{
struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
@@ -3268,6 +3288,9 @@
.remove = efx_pci_remove,
.driver.pm = &efx_pm_ops,
.err_handler = &efx_err_handlers,
+#ifdef CONFIG_SFC_SRIOV
+ .sriov_configure = efx_pci_sriov_configure,
+#endif
};
/**************************************************************************