diff options
Diffstat (limited to 'drivers/net/macvtap.c')
| -rw-r--r-- | drivers/net/macvtap.c | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 9a35aa462..bd6720962 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -129,7 +129,18 @@ static DEFINE_MUTEX(minor_lock); static DEFINE_IDR(minor_idr); #define GOODCOPY_LEN 128 -static struct class *macvtap_class; +static const void *macvtap_net_namespace(struct device *d) +{ + struct net_device *dev = to_net_dev(d->parent); + return dev_net(dev); +} + +static struct class macvtap_class = { + .name = "macvtap", + .owner = THIS_MODULE, + .ns_type = &net_ns_type_operations, + .namespace = macvtap_net_namespace, +}; static struct cdev macvtap_cdev; static const struct proto_ops macvtap_socket_ops; @@ -1278,10 +1289,12 @@ static int macvtap_device_event(struct notifier_block *unused, struct device *classdev; dev_t devt; int err; + char tap_name[IFNAMSIZ]; if (dev->rtnl_link_ops != &macvtap_link_ops) return NOTIFY_DONE; + snprintf(tap_name, IFNAMSIZ, "tap%d", dev->ifindex); vlan = netdev_priv(dev); switch (event) { @@ -1295,16 +1308,24 @@ static int macvtap_device_event(struct notifier_block *unused, return notifier_from_errno(err); devt = MKDEV(MAJOR(macvtap_major), vlan->minor); - classdev = device_create(macvtap_class, &dev->dev, devt, - dev, "tap%d", dev->ifindex); + classdev = device_create(&macvtap_class, &dev->dev, devt, + dev, tap_name); if (IS_ERR(classdev)) { macvtap_free_minor(vlan); return notifier_from_errno(PTR_ERR(classdev)); } + err = sysfs_create_link(&dev->dev.kobj, &classdev->kobj, + tap_name); + if (err) + return notifier_from_errno(err); break; case NETDEV_UNREGISTER: + /* vlan->minor == 0 if NETDEV_REGISTER above failed */ + if (vlan->minor == 0) + break; + sysfs_remove_link(&dev->dev.kobj, tap_name); devt = MKDEV(MAJOR(macvtap_major), vlan->minor); - device_destroy(macvtap_class, devt); + device_destroy(&macvtap_class, devt); macvtap_free_minor(vlan); break; } @@ -1330,11 +1351,9 @@ static int macvtap_init(void) if (err) goto out2; - macvtap_class = class_create(THIS_MODULE, "macvtap"); - if (IS_ERR(macvtap_class)) { - err = PTR_ERR(macvtap_class); + err = class_register(&macvtap_class); + if (err) goto out3; - } err = register_netdevice_notifier(&macvtap_notifier_block); if (err) @@ -1349,7 +1368,7 @@ static int macvtap_init(void) out5: unregister_netdevice_notifier(&macvtap_notifier_block); out4: - class_unregister(macvtap_class); + class_unregister(&macvtap_class); out3: cdev_del(&macvtap_cdev); out2: @@ -1363,7 +1382,7 @@ static void macvtap_exit(void) { rtnl_link_unregister(&macvtap_link_ops); unregister_netdevice_notifier(&macvtap_notifier_block); - class_unregister(macvtap_class); + class_unregister(&macvtap_class); cdev_del(&macvtap_cdev); unregister_chrdev_region(macvtap_major, MACVTAP_NUM_DEVS); idr_destroy(&minor_idr); |