1 files changed, 191 insertions, 50 deletions

diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index f3ecb3bca33d..45d097a164ad 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -843,7 +843,7 @@ static void iavf_restore_filters(struct iavf_adapter *adapter)
  * iavf_get_num_vlans_added - get number of VLANs added
  * @adapter: board private structure
  */
-static u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter)
+u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter)
 {
 	return bitmap_weight(adapter->vsi.active_cvlans, VLAN_N_VID) +
 		bitmap_weight(adapter->vsi.active_svlans, VLAN_N_VID);
@@ -906,11 +906,6 @@ static int iavf_vlan_rx_add_vid(struct net_device *netdev,
 	if (!iavf_add_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto))))
 		return -ENOMEM;
 
-	if (proto == cpu_to_be16(ETH_P_8021Q))
-		set_bit(vid, adapter->vsi.active_cvlans);
-	else
-		set_bit(vid, adapter->vsi.active_svlans);
-
 	return 0;
 }
 
@@ -983,6 +978,7 @@ struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter,
 
 		list_add_tail(&f->list, &adapter->mac_filter_list);
 		f->add = true;
+		f->add_handled = false;
 		f->is_new_mac = true;
 		f->is_primary = ether_addr_equal(macaddr, adapter->hw.mac.addr);
 		adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
@@ -994,47 +990,132 @@ struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter,
 }
 
 /**
- * iavf_set_mac - NDO callback to set port mac address
- * @netdev: network interface device structure
- * @p: pointer to an address structure
+ * iavf_replace_primary_mac - Replace current primary address
+ * @adapter: board private structure
+ * @new_mac: new MAC address to be applied
  *
- * Returns 0 on success, negative on failure
+ * Replace current dev_addr and send request to PF for removal of previous
+ * primary MAC address filter and addition of new primary MAC filter.
+ * Return 0 for success, -ENOMEM for failure.
+ *
+ * Do not call this with mac_vlan_list_lock!
  **/
-static int iavf_set_mac(struct net_device *netdev, void *p)
+int iavf_replace_primary_mac(struct iavf_adapter *adapter,
+			     const u8 *new_mac)
 {
-	struct iavf_adapter *adapter = netdev_priv(netdev);
 	struct iavf_hw *hw = &adapter->hw;
 	struct iavf_mac_filter *f;
-	struct sockaddr *addr = p;
-
-	if (!is_valid_ether_addr(addr->sa_data))
-		return -EADDRNOTAVAIL;
-
-	if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
-		return 0;
 
 	spin_lock_bh(&adapter->mac_vlan_list_lock);
 
+	list_for_each_entry(f, &adapter->mac_filter_list, list) {
+		f->is_primary = false;
+	}
+
 	f = iavf_find_filter(adapter, hw->mac.addr);
 	if (f) {
 		f->remove = true;
-		f->is_primary = true;
 		adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
 	}
 
-	f = iavf_add_filter(adapter, addr->sa_data);
+	f = iavf_add_filter(adapter, new_mac);
+
 	if (f) {
+		/* Always send the request to add if changing primary MAC
+		 * even if filter is already present on the list
+		 */
 		f->is_primary = true;
-		ether_addr_copy(hw->mac.addr, addr->sa_data);
+		f->add = true;
+		adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
+		ether_addr_copy(hw->mac.addr, new_mac);
 	}
 
 	spin_unlock_bh(&adapter->mac_vlan_list_lock);
 
 	/* schedule the watchdog task to immediately process the request */
-	if (f)
+	if (f) {
 		queue_work(iavf_wq, &adapter->watchdog_task.work);
+		return 0;
+	}
+	return -ENOMEM;
+}
+
+/**
+ * iavf_is_mac_set_handled - wait for a response to set MAC from PF
+ * @netdev: network interface device structure
+ * @macaddr: MAC address to set
+ *
+ * Returns true on success, false on failure
+ */
+static bool iavf_is_mac_set_handled(struct net_device *netdev,
+				    const u8 *macaddr)
+{
+	struct iavf_adapter *adapter = netdev_priv(netdev);
+	struct iavf_mac_filter *f;
+	bool ret = false;
+
+	spin_lock_bh(&adapter->mac_vlan_list_lock);
+
+	f = iavf_find_filter(adapter, macaddr);
+
+	if (!f || (!f->add && f->add_handled))
+		ret = true;
+
+	spin_unlock_bh(&adapter->mac_vlan_list_lock);
+
+	return ret;
+}
+
+/**
+ * iavf_set_mac - NDO callback to set port MAC address
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int iavf_set_mac(struct net_device *netdev, void *p)
+{
+	struct iavf_adapter *adapter = netdev_priv(netdev);
+	struct sockaddr *addr = p;
+	bool handle_mac = iavf_is_mac_set_handled(netdev, addr->sa_data);
+	int ret;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	ret = iavf_replace_primary_mac(adapter, addr->sa_data);
+
+	if (ret)
+		return ret;
+
+	/* If this is an initial set MAC during VF spawn do not wait */
+	if (adapter->flags & IAVF_FLAG_INITIAL_MAC_SET) {
+		adapter->flags &= ~IAVF_FLAG_INITIAL_MAC_SET;
+		return 0;
+	}
+
+	if (handle_mac)
+		goto done;
+
+	ret = wait_event_interruptible_timeout(adapter->vc_waitqueue, false, msecs_to_jiffies(2500));
+
+	/* If ret < 0 then it means wait was interrupted.
+	 * If ret == 0 then it means we got a timeout.
+	 * else it means we got response for set MAC from PF,
+	 * check if netdev MAC was updated to requested MAC,
+	 * if yes then set MAC succeeded otherwise it failed return -EACCES
+	 */
+	if (ret < 0)
+		return ret;
+
+	if (!ret)
+		return -EAGAIN;
+
+done:
+	if (!ether_addr_equal(netdev->dev_addr, addr->sa_data))
+		return -EACCES;
 
-	return (f == NULL) ? -ENOMEM : 0;
+	return 0;
 }
 
 /**
@@ -2245,7 +2326,6 @@ int iavf_parse_vf_resource_msg(struct iavf_adapter *adapter)
 
 	adapter->vsi.back = adapter;
 	adapter->vsi.base_vector = 1;
-	adapter->vsi.work_limit = IAVF_DEFAULT_IRQ_WORK;
 	vsi->netdev = adapter->netdev;
 	vsi->qs_handle = adapter->vsi_res->qset_handle;
 	if (adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
@@ -2451,6 +2531,8 @@ static void iavf_init_config_adapter(struct iavf_adapter *adapter)
 		ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr);
 	}
 
+	adapter->flags |= IAVF_FLAG_INITIAL_MAC_SET;
+
 	adapter->tx_desc_count = IAVF_DEFAULT_TXD;
 	adapter->rx_desc_count = IAVF_DEFAULT_RXD;
 	err = iavf_init_interrupt_scheme(adapter);
@@ -2956,6 +3038,9 @@ continue_reset:
 	adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
 	iavf_misc_irq_enable(adapter);
 
+	bitmap_clear(adapter->vsi.active_cvlans, 0, VLAN_N_VID);
+	bitmap_clear(adapter->vsi.active_svlans, 0, VLAN_N_VID);
+
 	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 2);
 
 	/* We were running when the reset started, so we need to restore some
@@ -3325,6 +3410,7 @@ static int iavf_validate_ch_config(struct iavf_adapter *adapter,
 				   struct tc_mqprio_qopt_offload *mqprio_qopt)
 {
 	u64 total_max_rate = 0;
+	u32 tx_rate_rem = 0;
 	int i, num_qps = 0;
 	u64 tx_rate = 0;
 	int ret = 0;
@@ -3339,12 +3425,32 @@ static int iavf_validate_ch_config(struct iavf_adapter *adapter,
 			return -EINVAL;
 		if (mqprio_qopt->min_rate[i]) {
 			dev_err(&adapter->pdev->dev,
-				"Invalid min tx rate (greater than 0) specified\n");
+				"Invalid min tx rate (greater than 0) specified for TC%d\n",
+				i);
 			return -EINVAL;
 		}
-		/*convert to Mbps */
+
+		/* convert to Mbps */
 		tx_rate = div_u64(mqprio_qopt->max_rate[i],
 				  IAVF_MBPS_DIVISOR);
+
+		if (mqprio_qopt->max_rate[i] &&
+		    tx_rate < IAVF_MBPS_QUANTA) {
+			dev_err(&adapter->pdev->dev,
+				"Invalid max tx rate for TC%d, minimum %dMbps\n",
+				i, IAVF_MBPS_QUANTA);
+			return -EINVAL;
+		}
+
+		(void)div_u64_rem(tx_rate, IAVF_MBPS_QUANTA, &tx_rate_rem);
+
+		if (tx_rate_rem != 0) {
+			dev_err(&adapter->pdev->dev,
+				"Invalid max tx rate for TC%d, not divisible by %d\n",
+				i, IAVF_MBPS_QUANTA);
+			return -EINVAL;
+		}
+
 		total_max_rate += tx_rate;
 		num_qps += mqprio_qopt->qopt.count[i];
 	}
@@ -3411,6 +3517,7 @@ static int __iavf_setup_tc(struct net_device *netdev, void *type_data)
 			netif_tx_disable(netdev);
 			iavf_del_all_cloud_filters(adapter);
 			adapter->aq_required = IAVF_FLAG_AQ_DISABLE_CHANNELS;
+			total_qps = adapter->orig_num_active_queues;
 			goto exit;
 		} else {
 			return -EINVAL;
@@ -3454,7 +3561,21 @@ static int __iavf_setup_tc(struct net_device *netdev, void *type_data)
 				adapter->ch_config.ch_info[i].offset = 0;
 			}
 		}
+
+		/* Take snapshot of original config such as "num_active_queues"
+		 * It is used later when delete ADQ flow is exercised, so that
+		 * once delete ADQ flow completes, VF shall go back to its
+		 * original queue configuration
+		 */
+
+		adapter->orig_num_active_queues = adapter->num_active_queues;
+
+		/* Store queue info based on TC so that VF gets configured
+		 * with correct number of queues when VF completes ADQ config
+		 * flow
+		 */
 		adapter->ch_config.total_qps = total_qps;
+
 		netif_tx_stop_all_queues(netdev);
 		netif_tx_disable(netdev);
 		adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS;
@@ -3471,6 +3592,12 @@ static int __iavf_setup_tc(struct net_device *netdev, void *type_data)
 		}
 	}
 exit:
+	if (test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section))
+		return 0;
+
+	netif_set_real_num_rx_queues(netdev, total_qps);
+	netif_set_real_num_tx_queues(netdev, total_qps);
+
 	return ret;
 }
 
@@ -3747,6 +3874,29 @@ static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc,
 }
 
 /**
+ * iavf_find_cf - Find the cloud filter in the list
+ * @adapter: Board private structure
+ * @cookie: filter specific cookie
+ *
+ * Returns ptr to the filter object or NULL. Must be called while holding the
+ * cloud_filter_list_lock.
+ */
+static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter,
+					      unsigned long *cookie)
+{
+	struct iavf_cloud_filter *filter = NULL;
+
+	if (!cookie)
+		return NULL;
+
+	list_for_each_entry(filter, &adapter->cloud_filter_list, list) {
+		if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
+			return filter;
+	}
+	return NULL;
+}
+
+/**
  * iavf_configure_clsflower - Add tc flower filters
  * @adapter: board private structure
  * @cls_flower: Pointer to struct flow_cls_offload
@@ -3777,6 +3927,15 @@ static int iavf_configure_clsflower(struct iavf_adapter *adapter,
 
 	filter->cookie = cls_flower->cookie;
 
+	/* bail out here if filter already exists */
+	spin_lock_bh(&adapter->cloud_filter_list_lock);
+	if (iavf_find_cf(adapter, &cls_flower->cookie)) {
+		dev_err(&adapter->pdev->dev, "Failed to add TC Flower filter, it already exists\n");
+		err = -EEXIST;
+		goto spin_unlock;
+	}
+	spin_unlock_bh(&adapter->cloud_filter_list_lock);
+
 	/* set the mask to all zeroes to begin with */
 	memset(&filter->f.mask.tcp_spec, 0, sizeof(struct virtchnl_l4_spec));
 	/* start out with flow type and eth type IPv4 to begin with */
@@ -3795,6 +3954,7 @@ static int iavf_configure_clsflower(struct iavf_adapter *adapter,
 	adapter->num_cloud_filters++;
 	filter->add = true;
 	adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
+spin_unlock:
 	spin_unlock_bh(&adapter->cloud_filter_list_lock);
 err:
 	if (err)
@@ -3804,28 +3964,6 @@ err:
 	return err;
 }
 
-/* iavf_find_cf - Find the cloud filter in the list
- * @adapter: Board private structure
- * @cookie: filter specific cookie
- *
- * Returns ptr to the filter object or NULL. Must be called while holding the
- * cloud_filter_list_lock.
- */
-static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter,
-					      unsigned long *cookie)
-{
-	struct iavf_cloud_filter *filter = NULL;
-
-	if (!cookie)
-		return NULL;
-
-	list_for_each_entry(filter, &adapter->cloud_filter_list, list) {
-		if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
-			return filter;
-	}
-	return NULL;
-}
-
 /**
  * iavf_delete_clsflower - Remove tc flower filters
  * @adapter: board private structure
@@ -4162,7 +4300,7 @@ static netdev_features_t iavf_features_check(struct sk_buff *skb,
 	}
 
 	/* No need to validate L4LEN as TCP is the only protocol with a
-	 * a flexible value and we support all possible values supported
+	 * flexible value and we support all possible values supported
 	 * by TCP, which is at most 15 dwords
 	 */
 
@@ -4681,6 +4819,9 @@ static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	/* Setup the wait queue for indicating transition to down status */
 	init_waitqueue_head(&adapter->down_waitqueue);
 
+	/* Setup the wait queue for indicating virtchannel events */
+	init_waitqueue_head(&adapter->vc_waitqueue);
+
 	return 0;
 
 err_ioremap: