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ixgbevf: Adjust to handle unassigned MAC address from PF

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If the administrator has not assigned a MAC address to the VF via the
PF then handle it gracefully by generating a temporary MAC address.
This ensures that we always know when we have a random address and
udev won't get upset about it.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Stefan Assmann <sassmann@kpanic.de>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Greg Rose 2013-02-13 03:02:05 +00:00 committed by Jeff Kirsher
parent 35055928c7
commit e1941a7433
2 changed files with 21 additions and 7 deletions
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21
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
View File

@ -2052,6 +2052,7 @@ static int ixgbevf_sw_init(struct ixgbevf_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
struct pci_dev *pdev = adapter->pdev;
struct net_device *netdev = adapter->netdev;
int err;
/* PCI config space info */
@ -2071,18 +2072,26 @@ static int ixgbevf_sw_init(struct ixgbevf_adapter *adapter)
err = hw->mac.ops.reset_hw(hw);
if (err) {
dev_info(&pdev->dev,
"PF still in reset state, assigning new address\n");
eth_hw_addr_random(adapter->netdev);
memcpy(adapter->hw.mac.addr, adapter->netdev->dev_addr,
adapter->netdev->addr_len);
"PF still in reset state. Is the PF interface up?\n");
} else {
err = hw->mac.ops.init_hw(hw);
if (err) {
pr_err("init_shared_code failed: %d\n", err);
goto out;
}
memcpy(adapter->netdev->dev_addr, adapter->hw.mac.addr,
adapter->netdev->addr_len);
err = hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
if (err)
dev_info(&pdev->dev, "Error reading MAC address\n");
else if (is_zero_ether_addr(adapter->hw.mac.addr))
dev_info(&pdev->dev,
"MAC address not assigned by administrator.\n");
memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
}
if (!is_valid_ether_addr(netdev->dev_addr)) {
dev_info(&pdev->dev, "Assigning random MAC address\n");
eth_hw_addr_random(netdev);
memcpy(hw->mac.addr, netdev->dev_addr, netdev->addr_len);
}
/* lock to protect mailbox accesses */

7
drivers/net/ethernet/intel/ixgbevf/vf.c
View File

@ -109,7 +109,12 @@ static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
if (ret_val)
return ret_val;
if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK))
/* New versions of the PF may NACK the reset return message
* to indicate that no MAC address has yet been assigned for
* the VF.
*/
if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK) &&
msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK))
return IXGBE_ERR_INVALID_MAC_ADDR;
memcpy(hw->mac.perm_addr, addr, ETH_ALEN);