net: Remove the now unused vrf_ptr

[firefly-linux-kernel-4.4.55.git] / drivers / net / vrf.c

diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c
index 72f1892ebad0380f76ba84fbcaeba673860e3c78..df872f4efb0d5d5453daddcaf8f6242bc6b8dabf 100644 (file)
--- a/drivers/net/vrf.c
+++ b/drivers/net/vrf.c
@@ -396,18 +396,15 @@ static void __vrf_insert_slave(struct slave_queue *queue, struct slave *slave)
 
 static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
 {
-       struct net_vrf_dev *vrf_ptr = kmalloc(sizeof(*vrf_ptr), GFP_KERNEL);
        struct slave *slave = kzalloc(sizeof(*slave), GFP_KERNEL);
        struct net_vrf *vrf = netdev_priv(dev);
        struct slave_queue *queue = &vrf->queue;
        int ret = -ENOMEM;
 
-       if (!slave || !vrf_ptr)
+       if (!slave)
                goto out_fail;
 
        slave->dev = port_dev;
-       vrf_ptr->ifindex = dev->ifindex;
-       vrf_ptr->tb_id = vrf->tb_id;
 
        /* register the packet handler for slave ports */
        ret = netdev_rx_handler_register(port_dev, vrf_handle_frame, dev);
@@ -424,7 +421,6 @@ static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
 
        port_dev->flags |= IFF_SLAVE;
        __vrf_insert_slave(queue, slave);
-       rcu_assign_pointer(port_dev->vrf_ptr, vrf_ptr);
        cycle_netdev(port_dev);
 
        return 0;
@@ -432,7 +428,6 @@ static int do_vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
 out_unregister:
        netdev_rx_handler_unregister(port_dev);
 out_fail:
-       kfree(vrf_ptr);
        kfree(slave);
        return ret;
 }
@@ -448,21 +443,15 @@ static int vrf_add_slave(struct net_device *dev, struct net_device *port_dev)
 /* inverse of do_vrf_add_slave */
 static int do_vrf_del_slave(struct net_device *dev, struct net_device *port_dev)
 {
-       struct net_vrf_dev *vrf_ptr = rtnl_dereference(port_dev->vrf_ptr);
        struct net_vrf *vrf = netdev_priv(dev);
        struct slave_queue *queue = &vrf->queue;
        struct slave *slave;
 
-       RCU_INIT_POINTER(port_dev->vrf_ptr, NULL);
-
        netdev_upper_dev_unlink(port_dev, dev);
        port_dev->flags &= ~IFF_SLAVE;
 
        netdev_rx_handler_unregister(port_dev);
 
-       /* after netdev_rx_handler_unregister for synchronize_rcu */
-       kfree(vrf_ptr);
-
        cycle_netdev(port_dev);
 
        slave = __vrf_find_slave_dev(queue, port_dev);
@@ -601,10 +590,6 @@ static int vrf_validate(struct nlattr *tb[], struct nlattr *data[])
 
 static void vrf_dellink(struct net_device *dev, struct list_head *head)
 {
-       struct net_vrf_dev *vrf_ptr = rtnl_dereference(dev->vrf_ptr);
-
-       RCU_INIT_POINTER(dev->vrf_ptr, NULL);
-       kfree_rcu(vrf_ptr, rcu);
        unregister_netdevice_queue(dev, head);
 }
 
@@ -612,7 +597,6 @@ static int vrf_newlink(struct net *src_net, struct net_device *dev,
                       struct nlattr *tb[], struct nlattr *data[])
 {
        struct net_vrf *vrf = netdev_priv(dev);
-       struct net_vrf_dev *vrf_ptr;
        int err;
 
        if (!data || !data[IFLA_VRF_TABLE])
@@ -622,24 +606,13 @@ static int vrf_newlink(struct net *src_net, struct net_device *dev,
 
        dev->priv_flags |= IFF_L3MDEV_MASTER;
 
-       err = -ENOMEM;
-       vrf_ptr = kmalloc(sizeof(*dev->vrf_ptr), GFP_KERNEL);
-       if (!vrf_ptr)
-               goto out_fail;
-
-       vrf_ptr->ifindex = dev->ifindex;
-       vrf_ptr->tb_id = vrf->tb_id;
-
        err = register_netdevice(dev);
        if (err < 0)
                goto out_fail;
 
-       rcu_assign_pointer(dev->vrf_ptr, vrf_ptr);
-
        return 0;
 
 out_fail:
-       kfree(vrf_ptr);
        free_netdev(dev);
        return err;
 }
@@ -683,10 +656,9 @@ static int vrf_device_event(struct notifier_block *unused,
 
        /* only care about unregister events to drop slave references */
        if (event == NETDEV_UNREGISTER) {
-               struct net_vrf_dev *vrf_ptr = rtnl_dereference(dev->vrf_ptr);
                struct net_device *vrf_dev;
 
-               if (!vrf_ptr || netif_is_l3_master(dev))
+               if (netif_is_l3_master(dev))
                        goto out;
 
                vrf_dev = netdev_master_upper_dev_get(dev);