}
EXPORT_SYMBOL(rtnl_is_locked);
+#ifdef CONFIG_PROVE_LOCKING
+int lockdep_rtnl_is_held(void)
+{
+ return lockdep_is_held(&rtnl_mutex);
+}
+EXPORT_SYMBOL(lockdep_rtnl_is_held);
+#endif /* #ifdef CONFIG_PROVE_LOCKING */
+
static struct rtnl_link *rtnl_msg_handlers[NPROTO];
static inline int rtm_msgindex(int msgtype)
}
}
+static unsigned int rtnl_dev_combine_flags(const struct net_device *dev,
+ const struct ifinfomsg *ifm)
+{
+ unsigned int flags = ifm->ifi_flags;
+
+ /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
+ if (ifm->ifi_change)
+ flags = (flags & ifm->ifi_change) |
+ (dev->flags & ~ifm->ifi_change);
+
+ return flags;
+}
+
static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
const struct net_device_stats *b)
{
}
if (ifm->ifi_flags || ifm->ifi_change) {
- unsigned int flags = ifm->ifi_flags;
-
- /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
- if (ifm->ifi_change)
- flags = (flags & ifm->ifi_change) |
- (dev->flags & ~ifm->ifi_change);
- err = dev_change_flags(dev, flags);
+ err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
if (err < 0)
goto errout;
}
return 0;
}
+int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
+{
+ unsigned int old_flags;
+ int err;
+
+ old_flags = dev->flags;
+ if (ifm && (ifm->ifi_flags || ifm->ifi_change)) {
+ err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
+ if (err < 0)
+ return err;
+ }
+
+ dev->rtnl_link_state = RTNL_LINK_INITIALIZED;
+ rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U);
+
+ __dev_notify_flags(dev, old_flags);
+ return 0;
+}
+EXPORT_SYMBOL(rtnl_configure_link);
+
struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[])
{
dev_net_set(dev, net);
dev->rtnl_link_ops = ops;
+ dev->rtnl_link_state = RTNL_LINK_INITIALIZING;
dev->real_num_tx_queues = real_num_queues;
if (strchr(dev->name, '%')) {
if (!(nlh->nlmsg_flags & NLM_F_CREATE))
return -ENODEV;
- if (ifm->ifi_index || ifm->ifi_flags || ifm->ifi_change)
+ if (ifm->ifi_index)
return -EOPNOTSUPP;
if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO])
return -EOPNOTSUPP;
err = ops->newlink(net, dev, tb, data);
else
err = register_netdevice(dev);
+
if (err < 0 && !IS_ERR(dev))
free_netdev(dev);
+ if (err < 0)
+ goto out;
+ err = rtnl_configure_link(dev, ifm);
+ if (err < 0)
+ unregister_netdevice(dev);
+out:
put_net(dest_net);
return err;
}
switch (event) {
case NETDEV_UP:
case NETDEV_DOWN:
- rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_UP|IFF_RUNNING);
- break;
case NETDEV_PRE_UP:
case NETDEV_POST_INIT:
case NETDEV_REGISTER: