diff options
| author | Anjali Singhai Jain <anjali.singhai@intel.com> | 2014-06-04 05:23:26 +0400 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2014-06-25 05:19:20 +0400 |
| commit | 327fe04bfb32642eee237e1cc1eaef16d6a4a0f5 (patch) | |
| tree | 9f5c035aa3351c0648c671d79187f7486838523e | |
| parent | 264ccc93b23ae654d3db37c3ebde1da6a2866e31 (diff) | |
| download | linux-327fe04bfb32642eee237e1cc1eaef16d6a4a0f5.tar.xz | |
i40e: Bypass timeout recovery level 0 so as to not cause MDD
When a Tx hang happens, usually the Tx queue disable fails. At
this point if we try to recover by a VSI reinit the HW gets
unhappy and we get a Malicious Driver Detect (MDD) event.
HW expects a PF reset if a queue disable fails, if we don't do a PF
reset and restart the queue we get an MDD. This patch makes sure we
do a PF reset on Tx hang and that way we avoid any MDD because of Tx
queue disable failure.
Change-ID: I665ab6223577c788da857ee2132e733dc9a451e4
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_main.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index e2dbe0427cdf..50f9ab72c95f 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -278,7 +278,7 @@ static void i40e_tx_timeout(struct net_device *netdev) pf->tx_timeout_count++; if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20))) - pf->tx_timeout_recovery_level = 0; + pf->tx_timeout_recovery_level = 1; pf->tx_timeout_last_recovery = jiffies; netdev_info(netdev, "tx_timeout recovery level %d\n", pf->tx_timeout_recovery_level); @@ -6826,6 +6826,8 @@ static int i40e_sw_init(struct i40e_pf *pf) pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors; pf->irq_pile->search_hint = 0; + pf->tx_timeout_recovery_level = 1; + mutex_init(&pf->switch_mutex); sw_init_done: |