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| author |   Jiri Pirko <jiri@mellanox.com> | 2015-12-03 12:12:15 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-12-03 11:49:26 -0500 |
| commit | 04d482660a07039fc4e9a42bb3517db236d98f96 (patch) | |
| tree | 416983aba87723dd09de034c5a13c74a092dd1a8 /net/core | |
| parent | bonding: fill-up LAG changeupper info struct and pass it along (diff) | |
| download | linux-dev-04d482660a07039fc4e9a42bb3517db236d98f96.tar.xz linux-dev-04d482660a07039fc4e9a42bb3517db236d98f96.zip | |
net: introduce change lower state notifier
When lower device like bonding slave, team/bridge port, etc changes its
state, it is useful for others to notice this change. Currently this is
implemented specificly for bonding as NETDEV_BONDING_INFO notifier. This
patch aims to replace this specific usage and make this more generic to
be used for all upper-lower devices.
Introduce NETDEV_CHANGELOWERSTATE netdev notifier type and
netdev_lower_state_changed() helper.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/dev.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 8ed886663c6d..d1706e88fbeb 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5756,6 +5756,26 @@ int dev_get_nest_level(struct net_device *dev, } EXPORT_SYMBOL(dev_get_nest_level); +/** + * netdev_lower_change - Dispatch event about lower device state change + * @lower_dev: device + * @lower_state_info: state to dispatch + * + * Send NETDEV_CHANGELOWERSTATE to netdev notifiers with info. + * The caller must hold the RTNL lock. + */ +void netdev_lower_state_changed(struct net_device *lower_dev, + void *lower_state_info) +{ + struct netdev_notifier_changelowerstate_info changelowerstate_info; + + ASSERT_RTNL(); + changelowerstate_info.lower_state_info = lower_state_info; + call_netdevice_notifiers_info(NETDEV_CHANGELOWERSTATE, lower_dev, + &changelowerstate_info.info); +} +EXPORT_SYMBOL(netdev_lower_state_changed); + static void dev_change_rx_flags(struct net_device *dev, int flags) { const struct net_device_ops *ops = dev->netdev_ops; |