i40e: Fix to stop tx_timeout recovery if GLOBR fails

When a tx_timeout fires, the PF attempts to recover by incrementally
resetting.  First we try a PFR, then CORER and finally a GLOBR.  If the
GLOBR fails, then we keep hitting the tx_timeout and incrementing the
recovery level and issuing dmesgs, which is both annoying to the user
and accomplishes nothing.

If the GLOBR fails, then we're pretty much totally hosed, and there's
not much else we can do to recover, so this makes it such that we just
kill the VSI and stop hitting the tx_timeout in such a case.

Fixes: 398a4d9906b4 ("i40e: main driver core")
Signed-off-by: Alan Brady <alan.brady@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index b36bf9c3e1e49a2dde1f7bde27b16590d8fe5c80..9f1d5de7bf16191dec2c7a939f794666fd4dc776 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -384,7 +384,9 @@ static void i40e_tx_timeout(struct net_device *netdev, unsigned int txqueue)
                set_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
                break;
        default:
-               netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
+               netdev_err(netdev, "tx_timeout recovery unsuccessful, device is in non-recoverable state.\n");
+               set_bit(__I40E_DOWN_REQUESTED, pf->state);
+               set_bit(__I40E_VSI_DOWN_REQUESTED, vsi->state);
                break;
        }