net/mlx4_en: Re-arrange ndo_set_rx_mode related code

Currently, mlx4_en_do_set_multicast serves as the ndo_set_rx_mode entry for mlx4_en,
doing all related work. Split it to few calls, one per required functionality
(e.g multicast, promiscuous, etc) and rename some structures and calls
to use rx_mode notation instead of multicast.
Signed-off-by: Yan Burman <yanb@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx4/en_netdev.c

@@ -747,52 +747,21 @@ static void update_mclist_flags(struct mlx4_en_priv *priv,
 	}
 }
 
-static void mlx4_en_set_multicast(struct net_device *dev)
+static void mlx4_en_set_rx_mode(struct net_device *dev)
 {
 	struct mlx4_en_priv *priv = netdev_priv(dev);
 
 	if (!priv->port_up)
 		return;
 
-	queue_work(priv->mdev->workqueue, &priv->mcast_task);
+	queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 }
 
-static void mlx4_en_do_set_multicast(struct work_struct *work)
+static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
+				     struct mlx4_en_dev *mdev)
 {
-	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
-						 mcast_task);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	struct net_device *dev = priv->dev;
-	struct mlx4_en_mc_list *mclist, *tmp;
-	u64 mcast_addr = 0;
-	u8 mc_list[16] = {0};
 	int err = 0;
 
-	mutex_lock(&mdev->state_lock);
-	if (!mdev->device_up) {
-		en_dbg(HW, priv, "Card is not up, ignoring multicast change.\n");
-		goto out;
-	}
-	if (!priv->port_up) {
-		en_dbg(HW, priv, "Port is down, ignoring  multicast change.\n");
-		goto out;
-	}
-
-	if (!netif_carrier_ok(dev)) {
-		if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
-			if (priv->port_state.link_state) {
-				priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
-				netif_carrier_on(dev);
-				en_dbg(LINK, priv, "Link Up\n");
-			}
-		}
-	}
-
-	/*
-	 * Promsicuous mode: disable all filters
-	 */
-
-	if (dev->flags & IFF_PROMISC) {
 	if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 		if (netif_msg_rx_status(priv))
 			en_warn(priv, "Entering promiscuous mode\n");
@@ -851,14 +820,13 @@ static void mlx4_en_do_set_multicast(struct work_struct *work)
 		if (err)
 			en_err(priv, "Failed disabling VLAN filter\n");
 	}
-		goto out;
-	}
+}
 
-	/*
-	 * Not in promiscuous mode
-	 */
+static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
+				       struct mlx4_en_dev *mdev)
+{
+	int err = 0;
 
-	if (priv->flags & MLX4_EN_FLAG_PROMISC) {
 	if (netif_msg_rx_status(priv))
 		en_warn(priv, "Leaving promiscuous mode\n");
 	priv->flags &= ~MLX4_EN_FLAG_PROMISC;
@@ -904,7 +872,16 @@ static void mlx4_en_do_set_multicast(struct work_struct *work)
 	err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 	if (err)
 		en_err(priv, "Failed enabling VLAN filter\n");
-	}
+}
+
+static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
+				 struct net_device *dev,
+				 struct mlx4_en_dev *mdev)
+{
+	struct mlx4_en_mc_list *mclist, *tmp;
+	u64 mcast_addr = 0;
+	u8 mc_list[16] = {0};
+	int err = 0;
 
 	/* Enable/disable the multicast filter according to IFF_ALLMULTI */
 	if (dev->flags & IFF_ALLMULTI) {
@@ -1018,6 +995,46 @@ static void mlx4_en_do_set_multicast(struct work_struct *work)
 			}
 		}
 	}
+}
+
+static void mlx4_en_do_set_rx_mode(struct work_struct *work)
+{
+	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
+						 rx_mode_task);
+	struct mlx4_en_dev *mdev = priv->mdev;
+	struct net_device *dev = priv->dev;
+
+	mutex_lock(&mdev->state_lock);
+	if (!mdev->device_up) {
+		en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
+		goto out;
+	}
+	if (!priv->port_up) {
+		en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
+		goto out;
+	}
+
+	if (!netif_carrier_ok(dev)) {
+		if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
+			if (priv->port_state.link_state) {
+				priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
+				netif_carrier_on(dev);
+				en_dbg(LINK, priv, "Link Up\n");
+			}
+		}
+	}
+
+	/* Promsicuous mode: disable all filters */
+	if (dev->flags & IFF_PROMISC) {
+		mlx4_en_set_promisc_mode(priv, mdev);
+		goto out;
+	}
+
+	/* Not in promiscuous mode */
+	if (priv->flags & MLX4_EN_FLAG_PROMISC)
+		mlx4_en_clear_promisc_mode(priv, mdev);
+
+	mlx4_en_do_multicast(priv, dev, mdev);
 out:
 	mutex_unlock(&mdev->state_lock);
 }
@@ -1374,7 +1391,7 @@ int mlx4_en_start_port(struct net_device *dev)
 	priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
 
 	/* Schedule multicast task to populate multicast list */
-	queue_work(mdev->workqueue, &priv->mcast_task);
+	queue_work(mdev->workqueue, &priv->rx_mode_task);
 
 	mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
 
@@ -1777,7 +1794,7 @@ static const struct net_device_ops mlx4_netdev_ops = {
 	.ndo_start_xmit		= mlx4_en_xmit,
 	.ndo_select_queue	= mlx4_en_select_queue,
 	.ndo_get_stats		= mlx4_en_get_stats,
-	.ndo_set_rx_mode	= mlx4_en_set_multicast,
+	.ndo_set_rx_mode	= mlx4_en_set_rx_mode,
 	.ndo_set_mac_address	= mlx4_en_set_mac,
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_change_mtu		= mlx4_en_change_mtu,
@@ -1847,7 +1864,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 	priv->mac_index = -1;
 	priv->msg_enable = MLX4_EN_MSG_LEVEL;
 	spin_lock_init(&priv->stats_lock);
-	INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
+	INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
 	INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
 	INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
 	INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);

drivers/net/ethernet/mellanox/mlx4/mlx4_en.h

@@ -504,7 +504,7 @@ struct mlx4_en_priv {
 	struct mlx4_en_cq *tx_cq;
 	struct mlx4_en_cq rx_cq[MAX_RX_RINGS];
 	struct mlx4_qp drop_qp;
-	struct work_struct mcast_task;
+	struct work_struct rx_mode_task;
 	struct work_struct mac_task;
 	struct work_struct watchdog_task;
 	struct work_struct linkstate_task;