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sfc: Enable VF's via a write to the sysfs file sriov_numvfs

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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>
This commit is contained in:
Shradha Shah
2015-05-06 00:55:58 +01:00
committed by David S. Miller
parent bf3d0156c5
commit 834e23dd0a
9 changed files with 82 additions and 1 deletions
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23
drivers/net/ethernet/sfc/efx.c
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@@ -3046,6 +3046,26 @@ static int efx_pci_probe(struct pci_dev *pci_dev,
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 @@ static struct pci_driver efx_pci_driver = {
.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
};
/**************************************************************************