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ixgbe: Allow setting zero MAC address for VF 

Currently, there is no logic that allows a VF's MAC address to be removed
from the RAR table.

Allow the user to specify a zero MAC address in order to clear the VF's
MAC address from the RAR table.  This functionality is also utilized by
libvirt when removing VFs.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Tony Nguyen 2017-04-12 13:35:22 -07:00 committed by Jeff Kirsher
parent f87fc44770
commit 27bdc44cdb
1 changed files with 18 additions and 10 deletions
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28
drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
View File

@ -1347,18 +1347,26 @@ void ixgbe_ping_all_vfs(struct ixgbe_adapter *adapter)
int ixgbe_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
if (!is_valid_ether_addr(mac) || (vf >= adapter->num_vfs))
if (vf >= adapter->num_vfs)
return -EINVAL;
if (is_zero_ether_addr(mac)) {
adapter->vfinfo[vf].pf_set_mac = false;
dev_info(&adapter->pdev->dev, "removing MAC on VF %d\n", vf);
} else if (is_valid_ether_addr(mac)) {
adapter->vfinfo[vf].pf_set_mac = true;
dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n",
mac, vf);
dev_info(&adapter->pdev->dev, "Reload the VF driver to make this change effective.");
if (test_bit(__IXGBE_DOWN, &adapter->state)) {
dev_warn(&adapter->pdev->dev, "The VF MAC address has been set, but the PF device is not up.\n");
dev_warn(&adapter->pdev->dev, "Bring the PF device up before attempting to use the VF device.\n");
}
} else {
return -EINVAL;
adapter->vfinfo[vf].pf_set_mac = true;
dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf);
dev_info(&adapter->pdev->dev, "Reload the VF driver to make this"
" change effective.");
if (test_bit(__IXGBE_DOWN, &adapter->state)) {
dev_warn(&adapter->pdev->dev, "The VF MAC address has been set,"
" but the PF device is not up.\n");
dev_warn(&adapter->pdev->dev, "Bring the PF device up before"
" attempting to use the VF device.\n");
}
return ixgbe_set_vf_mac(adapter, vf, mac);
}