diff options
| author | Patrick McHardy <kaber@trash.net> | 2007-07-11 19:42:13 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-11 19:45:33 -0700 |
| commit | 2d85cba2b272a5201a60966a65a4f8c0bcc0bb71 (patch) | |
| tree | f8dd1ca6d7c963eade714a4ecc7aec4d7751f55a /net/core | |
| parent | 8c979c26a0f093c13290320edda799d8335e50ae (diff) | |
| download | linux-2d85cba2b272a5201a60966a65a4f8c0bcc0bb71.tar.bz2 | |
[RTNETLINK]: rtnl_link API simplification
All drivers need to unregister their devices in the module unload function.
While doing so they must hold the rtnl and atomically unregister the
rtnl_link ops as well. This makes the rtnl_link_unregister function that
takes the rtnl itself completely useless.
Provide default newlink/dellink functions, make __rtnl_link_unregister and
rtnl_link_unregister unregister all devices with matching rtnl_link_ops and
change the existing users to take advantage of that.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/rtnetlink.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 54c17e4cd28f..7b6b16396745 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -270,6 +270,9 @@ static LIST_HEAD(link_ops); */ int __rtnl_link_register(struct rtnl_link_ops *ops) { + if (!ops->dellink) + ops->dellink = unregister_netdevice; + list_add_tail(&ops->list, &link_ops); return 0; } @@ -298,12 +301,16 @@ EXPORT_SYMBOL_GPL(rtnl_link_register); * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. * @ops: struct rtnl_link_ops * to unregister * - * The caller must hold the rtnl_mutex. This function should be used - * by drivers that unregister devices during module unloading. It must - * be called after unregistering the devices. + * The caller must hold the rtnl_mutex. */ void __rtnl_link_unregister(struct rtnl_link_ops *ops) { + struct net_device *dev, *n; + + for_each_netdev_safe(dev, n) { + if (dev->rtnl_link_ops == ops) + ops->dellink(dev); + } list_del(&ops->list); } @@ -1067,7 +1074,10 @@ replay: if (tb[IFLA_LINKMODE]) dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); - err = ops->newlink(dev, tb, data); + if (ops->newlink) + err = ops->newlink(dev, tb, data); + else + err = register_netdevice(dev); err_free: if (err < 0) free_netdev(dev); |