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sfc: do not allow VFs to be destroyed if assigned to guests 

Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Pieczko 2015-06-02 11:40:31 +01:00 committed by David S. Miller
parent f00bf2305c
commit 71158bf2e7
1 changed files with 9 additions and 0 deletions
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9
drivers/net/ethernet/sfc/ef10_sriov.c
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@ -417,6 +417,15 @@ static int efx_ef10_pci_sriov_disable(struct efx_nic *efx)
{
struct pci_dev *dev = efx->pci_dev;
if (!efx->vf_count)
return 0;
if (pci_vfs_assigned(dev)) {
netif_err(efx, drv, efx->net_dev, "VFs are assigned to guests; "
"please detach them before disabling SR-IOV\n");
return -EBUSY;
}
pci_disable_sriov(dev);
efx_ef10_sriov_free_vf_vswitching(efx);
efx->vf_count = 0;