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Commit 696f1943 authored by Manish Chopra's avatar Manish Chopra Committed by David S. Miller
Browse files

qlcnic: Do not disable SR-IOV when VFs are assigned to VMs 



o While disabling SR-IOV when VFs are assigned to VMs causes host crash
  so return -EPERM when user request to disable SR-IOV using pci sysfs in
  case of VFs are assigned to VMs.

Signed-off-by: default avatarManish Chopra <manish.chopra@qlogic.com>
Signed-off-by: default avatarShahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4f030227

drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c

+10 −0
Original line number Diff line number Diff line
@@ -461,6 +461,16 @@ static int qlcnic_pci_sriov_disable(struct qlcnic_adapter *adapter) 
{

	struct net_device *netdev = adapter->netdev;



	if (pci_vfs_assigned(adapter->pdev)) {

		netdev_err(adapter->netdev,

			   "SR-IOV VFs belonging to port %d are assigned to VMs. SR-IOV can not be disabled on this port\n",

			   adapter->portnum);

		netdev_info(adapter->netdev,

			    "Please detach SR-IOV VFs belonging to port %d from VMs, and then try to disable SR-IOV on this port\n",

			    adapter->portnum);

		return -EPERM;

	}



	rtnl_lock();

	if (netif_running(netdev))

		__qlcnic_down(adapter, netdev);