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i40e: Disable offline diagnostics if VFs are enabled

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Require the user to disable virtual functions before running the device
offline diagnostics.  The offline diagnostics are intended to ensure
basic operation of the device - it is beyond the scope of the diagnostic
test to handle the additional complexity of bringing all the virtual
functions offline and then back online for each test run.

Change-ID: Ic0b854851a09fc85df0c9e82c220e45885457c30
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Greg Rose 2015-04-16 20:05:59 -04:00 committed by Jeff Kirsher
parent e120814d74
commit e17bc411ae
2 changed files with 34 additions and 0 deletions
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27
drivers/net/ethernet/intel/i40e/i40e_ethtool.c
View File

@ -1548,6 +1548,17 @@ static int i40e_loopback_test(struct net_device *netdev, u64 *data)
return *data;
}
static inline bool i40e_active_vfs(struct i40e_pf *pf)
{
struct i40e_vf *vfs = pf->vf;
int i;
for (i = 0; i < pf->num_alloc_vfs; i++)
if (vfs[i].vf_states & I40E_VF_STAT_ACTIVE)
return true;
return false;
}
static void i40e_diag_test(struct net_device *netdev,
struct ethtool_test *eth_test, u64 *data)
{
@ -1560,6 +1571,20 @@ static void i40e_diag_test(struct net_device *netdev,
netif_info(pf, drv, netdev, "offline testing starting\n");
set_bit(__I40E_TESTING, &pf->state);
if (i40e_active_vfs(pf)) {
dev_warn(&pf->pdev->dev,
"Please take active VFS offline and restart the adapter before running NIC diagnostics\n");
data[I40E_ETH_TEST_REG] = 1;
data[I40E_ETH_TEST_EEPROM] = 1;
data[I40E_ETH_TEST_INTR] = 1;
data[I40E_ETH_TEST_LOOPBACK] = 1;
data[I40E_ETH_TEST_LINK] = 1;
eth_test->flags |= ETH_TEST_FL_FAILED;
clear_bit(__I40E_TESTING, &pf->state);
goto skip_ol_tests;
}
/* If the device is online then take it offline */
if (if_running)
/* indicate we're in test mode */
@ -1605,6 +1630,8 @@ static void i40e_diag_test(struct net_device *netdev,
data[I40E_ETH_TEST_LOOPBACK] = 0;
}
skip_ol_tests:
netif_info(pf, drv, netdev, "testing finished\n");
}

7
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
View File

@ -980,6 +980,13 @@ static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
int pre_existing_vfs = pci_num_vf(pdev);
int err = 0;
if (pf->state & __I40E_TESTING) {
dev_warn(&pdev->dev,
"Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
err = -EPERM;
goto err_out;
}
dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
if (pre_existing_vfs && pre_existing_vfs != num_vfs)
i40e_free_vfs(pf);