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

Tony Nguyen says:

====================
40GbE Intel Wired LAN Driver Updates 2021-11-30

This series contains updates to iavf driver only.

Patryk adds a debug message when MTU is changed.

Grzegorz adds messaging when transitioning in and out of multicast
promiscuous mode.

Jake returns correct error codes for iavf_parse_cls_flower().

Jedrzej adds messaging for when the driver is removed and refactors
struct usage to take less memory. He also adjusts ethtool statistics to
only display information on active queues.

Tony allows for user to specify the RSS hash.

Karen resolves some static analysis warnings, corrects format specifiers,
and rewords a message to come across as informational.

v2:
- Dropped patch 1 (for net) and 5
- Change MTU message from info to debug
====================

Signed-off-by: David S. Miller <[email protected]>

Author: davem330

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

@@ -137,9 +137,13 @@ struct iavf_q_vector {
 struct iavf_mac_filter {
 	struct list_head list;
 	u8 macaddr[ETH_ALEN];
-	bool is_new_mac;	/* filter is new, wait for PF decision */
-	bool remove;		/* filter needs to be removed */
-	bool add;		/* filter needs to be added */
+	struct {
+		u8 is_new_mac:1;    /* filter is new, wait for PF decision */
+		u8 remove:1;        /* filter needs to be removed */
+		u8 add:1;           /* filter needs to be added */
+		u8 is_primary:1;    /* filter is a default VF MAC */
+		u8 padding:4;
+	};
 };
 
 struct iavf_vlan_filter {

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

@@ -331,9 +331,16 @@ static int iavf_get_link_ksettings(struct net_device *netdev,
  **/
 static int iavf_get_sset_count(struct net_device *netdev, int sset)
 {
+	/* Report the maximum number queues, even if not every queue is
+	 * currently configured. Since allocation of queues is in pairs,
+	 * use netdev->real_num_tx_queues * 2. The real_num_tx_queues is set
+	 * at device creation and never changes.
+	 */
+
 	if (sset == ETH_SS_STATS)
 		return IAVF_STATS_LEN +
-			(IAVF_QUEUE_STATS_LEN * 2 * IAVF_MAX_REQ_QUEUES);
+			(IAVF_QUEUE_STATS_LEN * 2 *
+			 netdev->real_num_tx_queues);
 	else if (sset == ETH_SS_PRIV_FLAGS)
 		return IAVF_PRIV_FLAGS_STR_LEN;
 	else
@@ -360,17 +367,18 @@ static void iavf_get_ethtool_stats(struct net_device *netdev,
 	iavf_add_ethtool_stats(&data, adapter, iavf_gstrings_stats);
 
 	rcu_read_lock();
-	for (i = 0; i < IAVF_MAX_REQ_QUEUES; i++) {
+	/* As num_active_queues describe both tx and rx queues, we can use
+	 * it to iterate over rings' stats.
+	 */
+	for (i = 0; i < adapter->num_active_queues; i++) {
 		struct iavf_ring *ring;
 
-		/* Avoid accessing un-allocated queues */
-		ring = (i < adapter->num_active_queues ?
-			&adapter->tx_rings[i] : NULL);
+		/* Tx rings stats */
+		ring = &adapter->tx_rings[i];
 		iavf_add_queue_stats(&data, ring);
 
-		/* Avoid accessing un-allocated queues */
-		ring = (i < adapter->num_active_queues ?
-			&adapter->rx_rings[i] : NULL);
+		/* Rx rings stats */
+		ring = &adapter->rx_rings[i];
 		iavf_add_queue_stats(&data, ring);
 	}
 	rcu_read_unlock();
@@ -407,10 +415,10 @@ static void iavf_get_stat_strings(struct net_device *netdev, u8 *data)
 
 	iavf_add_stat_strings(&data, iavf_gstrings_stats);
 
-	/* Queues are always allocated in pairs, so we just use num_tx_queues
-	 * for both Tx and Rx queues.
+	/* Queues are always allocated in pairs, so we just use
+	 * real_num_tx_queues for both Tx and Rx queues.
 	 */
-	for (i = 0; i < netdev->num_tx_queues; i++) {
+	for (i = 0; i < netdev->real_num_tx_queues; i++) {
 		iavf_add_stat_strings(&data, iavf_gstrings_queue_stats,
 				      "tx", i);
 		iavf_add_stat_strings(&data, iavf_gstrings_queue_stats,
@@ -1910,7 +1918,7 @@ static int iavf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
  * @key: hash key
  * @hfunc: hash function to use
  *
- * Returns -EINVAL if the table specifies an inavlid queue id, otherwise
+ * Returns -EINVAL if the table specifies an invalid queue id, otherwise
  * returns 0 after programming the table.
  **/
 static int iavf_set_rxfh(struct net_device *netdev, const u32 *indir,
@@ -1919,19 +1927,21 @@ static int iavf_set_rxfh(struct net_device *netdev, const u32 *indir,
 	struct iavf_adapter *adapter = netdev_priv(netdev);
 	u16 i;
 
-	/* We do not allow change in unsupported parameters */
-	if (key ||
-	    (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+	/* Only support toeplitz hash function */
+	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
 		return -EOPNOTSUPP;
-	if (!indir)
+
+	if (!key && !indir)
 		return 0;
 
 	if (key)
 		memcpy(adapter->rss_key, key, adapter->rss_key_size);
 
-	/* Each 32 bits pointed by 'indir' is stored with a lut entry */
-	for (i = 0; i < adapter->rss_lut_size; i++)
-		adapter->rss_lut[i] = (u8)(indir[i]);
+	if (indir) {
+		/* Each 32 bits pointed by 'indir' is stored with a lut entry */
+		for (i = 0; i < adapter->rss_lut_size; i++)
+			adapter->rss_lut[i] = (u8)(indir[i]);
+	}
 
 	return iavf_config_rss(adapter);
 }

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

@@ -463,14 +463,14 @@ iavf_request_traffic_irqs(struct iavf_adapter *adapter, char *basename)
 
 		if (q_vector->tx.ring && q_vector->rx.ring) {
 			snprintf(q_vector->name, sizeof(q_vector->name),
-				 "iavf-%s-TxRx-%d", basename, rx_int_idx++);
+				 "iavf-%s-TxRx-%u", basename, rx_int_idx++);
 			tx_int_idx++;
 		} else if (q_vector->rx.ring) {
 			snprintf(q_vector->name, sizeof(q_vector->name),
-				 "iavf-%s-rx-%d", basename, rx_int_idx++);
+				 "iavf-%s-rx-%u", basename, rx_int_idx++);
 		} else if (q_vector->tx.ring) {
 			snprintf(q_vector->name, sizeof(q_vector->name),
-				 "iavf-%s-tx-%d", basename, tx_int_idx++);
+				 "iavf-%s-tx-%u", basename, tx_int_idx++);
 		} else {
 			/* skip this unused q_vector */
 			continue;
@@ -2910,7 +2910,7 @@ static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
 			} else {
 				dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n",
 					match.mask->dst);
-				return IAVF_ERR_CONFIG;
+				return -EINVAL;
 			}
 		}
 
@@ -2920,7 +2920,7 @@ static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
 			} else {
 				dev_err(&adapter->pdev->dev, "Bad ether src mask %pM\n",
 					match.mask->src);
-				return IAVF_ERR_CONFIG;
+				return -EINVAL;
 			}
 		}
 
@@ -2955,7 +2955,7 @@ static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
 			} else {
 				dev_err(&adapter->pdev->dev, "Bad vlan mask %u\n",
 					match.mask->vlan_id);
-				return IAVF_ERR_CONFIG;
+				return -EINVAL;
 			}
 		}
 		vf->mask.tcp_spec.vlan_id |= cpu_to_be16(0xffff);
@@ -2979,7 +2979,7 @@ static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
 			} else {
 				dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n",
 					be32_to_cpu(match.mask->dst));
-				return IAVF_ERR_CONFIG;
+				return -EINVAL;
 			}
 		}
 
@@ -2989,13 +2989,13 @@ static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
 			} else {
 				dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n",
 					be32_to_cpu(match.mask->dst));
-				return IAVF_ERR_CONFIG;
+				return -EINVAL;
 			}
 		}
 
 		if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) {
 			dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n");
-			return IAVF_ERR_CONFIG;
+			return -EINVAL;
 		}
 		if (match.key->dst) {
 			vf->mask.tcp_spec.dst_ip[0] |= cpu_to_be32(0xffffffff);
@@ -3016,7 +3016,7 @@ static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
 		if (ipv6_addr_any(&match.mask->dst)) {
 			dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n",
 				IPV6_ADDR_ANY);
-			return IAVF_ERR_CONFIG;
+			return -EINVAL;
 		}
 
 		/* src and dest IPv6 address should not be LOOPBACK
@@ -3026,7 +3026,7 @@ static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
 		    ipv6_addr_loopback(&match.key->src)) {
 			dev_err(&adapter->pdev->dev,
 				"ipv6 addr should not be loopback\n");
-			return IAVF_ERR_CONFIG;
+			return -EINVAL;
 		}
 		if (!ipv6_addr_any(&match.mask->dst) ||
 		    !ipv6_addr_any(&match.mask->src))
@@ -3051,7 +3051,7 @@ static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
 			} else {
 				dev_err(&adapter->pdev->dev, "Bad src port mask %u\n",
 					be16_to_cpu(match.mask->src));
-				return IAVF_ERR_CONFIG;
+				return -EINVAL;
 			}
 		}
 
@@ -3061,7 +3061,7 @@ static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
 			} else {
 				dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n",
 					be16_to_cpu(match.mask->dst));
-				return IAVF_ERR_CONFIG;
+				return -EINVAL;
 			}
 		}
 		if (match.key->dst) {
@@ -3428,6 +3428,8 @@ static int iavf_change_mtu(struct net_device *netdev, int new_mtu)
 {
 	struct iavf_adapter *adapter = netdev_priv(netdev);
 
+	netdev_dbg(netdev, "changing MTU from %d to %d\n",
+		   netdev->mtu, new_mtu);
 	netdev->mtu = new_mtu;
 	if (CLIENT_ENABLED(adapter)) {
 		iavf_notify_client_l2_params(&adapter->vsi);
@@ -3998,6 +4000,7 @@ static void iavf_remove(struct pci_dev *pdev)
 	if (iavf_lock_timeout(&adapter->crit_lock, 5000))
 		dev_warn(&adapter->pdev->dev, "failed to acquire crit_lock in %s\n", __FUNCTION__);
 
+	dev_info(&adapter->pdev->dev, "Removing device\n");
 	/* Shut down all the garbage mashers on the detention level */
 	iavf_change_state(adapter, __IAVF_REMOVE);
 	adapter->aq_required = 0;

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

@@ -1766,7 +1766,7 @@ int iavf_napi_poll(struct napi_struct *napi, int budget)
 	if (likely(napi_complete_done(napi, work_done)))
 		iavf_update_enable_itr(vsi, q_vector);
 
-	return min(work_done, budget - 1);
+	return min_t(int, work_done, budget - 1);
 }
 
 /**

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

@@ -762,15 +762,23 @@ void iavf_set_promiscuous(struct iavf_adapter *adapter, int flags)
 	if (flags & FLAG_VF_MULTICAST_PROMISC) {
 		adapter->flags |= IAVF_FLAG_ALLMULTI_ON;
 		adapter->aq_required &= ~IAVF_FLAG_AQ_REQUEST_ALLMULTI;
-		dev_info(&adapter->pdev->dev, "Entering multicast promiscuous mode\n");
+		dev_info(&adapter->pdev->dev, "%s is entering multicast promiscuous mode\n",
+			 adapter->netdev->name);
 	}
 
 	if (!flags) {
-		adapter->flags &= ~(IAVF_FLAG_PROMISC_ON |
-				    IAVF_FLAG_ALLMULTI_ON);
-		adapter->aq_required &= ~(IAVF_FLAG_AQ_RELEASE_PROMISC |
-					  IAVF_FLAG_AQ_RELEASE_ALLMULTI);
-		dev_info(&adapter->pdev->dev, "Leaving promiscuous mode\n");
+		if (adapter->flags & IAVF_FLAG_PROMISC_ON) {
+			adapter->flags &= ~IAVF_FLAG_PROMISC_ON;
+			adapter->aq_required &= ~IAVF_FLAG_AQ_RELEASE_PROMISC;
+			dev_info(&adapter->pdev->dev, "Leaving promiscuous mode\n");
+		}
+
+		if (adapter->flags & IAVF_FLAG_ALLMULTI_ON) {
+			adapter->flags &= ~IAVF_FLAG_ALLMULTI_ON;
+			adapter->aq_required &= ~IAVF_FLAG_AQ_RELEASE_ALLMULTI;
+			dev_info(&adapter->pdev->dev, "%s is leaving multicast promiscuous mode\n",
+				 adapter->netdev->name);
+		}
 	}
 
 	adapter->current_op = VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE;
@@ -1017,7 +1025,7 @@ static void iavf_print_link_message(struct iavf_adapter *adapter)
 	} else if (link_speed_mbps == SPEED_UNKNOWN) {
 		snprintf(speed, IAVF_MAX_SPEED_STRLEN, "%s", "Unknown Mbps");
 	} else {
-		snprintf(speed, IAVF_MAX_SPEED_STRLEN, "%u %s",
+		snprintf(speed, IAVF_MAX_SPEED_STRLEN, "%d %s",
 			 link_speed_mbps, "Mbps");
 	}
 
@@ -1522,7 +1530,7 @@ void iavf_virtchnl_completion(struct iavf_adapter *adapter,
 			iavf_print_link_message(adapter);
 			break;
 		case VIRTCHNL_EVENT_RESET_IMPENDING:
-			dev_info(&adapter->pdev->dev, "Reset warning received from the PF\n");
+			dev_info(&adapter->pdev->dev, "Reset indication received from the PF\n");
 			if (!(adapter->flags & IAVF_FLAG_RESET_PENDING)) {
 				adapter->flags |= IAVF_FLAG_RESET_PENDING;
 				dev_info(&adapter->pdev->dev, "Scheduling reset task\n");