i40e: Fix to stop tx_timeout recovery if GLOBR fails

stable inclusion
from stable-v5.10.138
commit 668f38fb9a8ce4218f635d758e64d675359f00f6
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I60QFD

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=668f38fb9a8ce4218f635d758e64d675359f00f6

--------------------------------

commit 57c942bc upstream.

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: 41c445ff ("i40e: main driver core")
Signed-off-by: NAlan Brady <alan.brady@intel.com>
Signed-off-by: NMateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>

drivers/net/ethernet/intel/i40e/i40e_main.c

@@ -382,7 +382,9 @@ 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;
 	}