Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue

Nguyen, Anthony L says:

====================
40GbE Intel Wired LAN Driver Updates 2021-08-17

This series contains updates to iavf and i40e drivers.

Stefan Assmann converts use of flag based locking of critical sections
to mutexes for iavf.

Colin King fixes a spelling error for i40e.

* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
  i40e: Fix spelling mistake "dissable" -> "disable"
  iavf: use mutexes for locking of critical sections
====================

Link: https://lore.kernel.org/r/20210817203549.3529860-1-anthony.l.nguyen@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -4638,7 +4638,7 @@ void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
 		err = i40e_control_wait_rx_q(pf, pf_q, false);
 		if (err)
 			dev_info(&pf->pdev->dev,
-				 "VSI seid %d Rx ring %d dissable timeout\n",
+				 "VSI seid %d Rx ring %d disable timeout\n",
 				 vsi->seid, pf_q);
 	}
 

drivers/net/ethernet/intel/iavf/iavf.h

@@ -185,12 +185,6 @@ enum iavf_state_t {
 	__IAVF_RUNNING,		/* opened, working */
 };
 
-enum iavf_critical_section_t {
-	__IAVF_IN_CRITICAL_TASK,	/* cannot be interrupted */
-	__IAVF_IN_CLIENT_TASK,
-	__IAVF_IN_REMOVE_TASK,	/* device being removed */
-};
-
 #define IAVF_CLOUD_FIELD_OMAC		0x01
 #define IAVF_CLOUD_FIELD_IMAC		0x02
 #define IAVF_CLOUD_FIELD_IVLAN	0x04
@@ -235,6 +229,9 @@ struct iavf_adapter {
 	struct iavf_q_vector *q_vectors;
 	struct list_head vlan_filter_list;
 	struct list_head mac_filter_list;
+	struct mutex crit_lock;
+	struct mutex client_lock;
+	struct mutex remove_lock;
 	/* Lock to protect accesses to MAC and VLAN lists */
 	spinlock_t mac_vlan_list_lock;
 	char misc_vector_name[IFNAMSIZ + 9];

drivers/net/ethernet/intel/iavf/iavf_ethtool.c

@@ -1352,8 +1352,7 @@ static int iavf_add_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rx
 	if (!fltr)
 		return -ENOMEM;
 
-	while (test_and_set_bit(__IAVF_IN_CRITICAL_TASK,
-				&adapter->crit_section)) {
+	while (!mutex_trylock(&adapter->crit_lock)) {
 		if (--count == 0) {
 			kfree(fltr);
 			return -EINVAL;
@@ -1378,7 +1377,7 @@ static int iavf_add_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rx
 	if (err && fltr)
 		kfree(fltr);
 
-	clear_bit(__IAVF_IN_CRITICAL_TASK, &adapter->crit_section);
+	mutex_unlock(&adapter->crit_lock);
 	return err;
 }
 
@@ -1563,8 +1562,7 @@ iavf_set_adv_rss_hash_opt(struct iavf_adapter *adapter,
 		return -EINVAL;
 	}
 
-	while (test_and_set_bit(__IAVF_IN_CRITICAL_TASK,
-				&adapter->crit_section)) {
+	while (!mutex_trylock(&adapter->crit_lock)) {
 		if (--count == 0) {
 			kfree(rss_new);
 			return -EINVAL;
@@ -1600,7 +1598,7 @@ iavf_set_adv_rss_hash_opt(struct iavf_adapter *adapter,
 	if (!err)
 		mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
 
-	clear_bit(__IAVF_IN_CRITICAL_TASK, &adapter->crit_section);
+	mutex_unlock(&adapter->crit_lock);
 
 	if (!rss_new_add)
 		kfree(rss_new);