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bonding: add netlink attributes to slave link dev

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If link is IFF_SLAVE, extend link dev netlink attributes to include
slave attributes with new IFLA_SLAVE nest.  Add netlink notification
(RTM_NEWLINK) when slave status changes from backup to active, or
visa-versa.

Adds new ndo_get_slave op to net_device_ops to fill skb with IFLA_SLAVE
attributes.  Currently only used by bonding driver, but could be
used by other aggregating devices with slaves.

Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
sfeldma@cumulusnetworks.com
2014-01-16 22:57:56 -08:00
committed by David S. Miller
parent 07699f9a7c
commit 1d3ee88ae0
6 changed files with 118 additions and 2 deletions
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5
include/linux/netdevice.h
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@@ -921,6 +921,9 @@ struct netdev_phys_port_id {
* int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev);
* Called to release previously enslaved netdev.
*
* int (*ndo_get_slave)(struct net_device *slave_dev, struct sk_buff *skb);
* Called to fill netlink skb with slave info.
*
* Feature/offload setting functions.
* netdev_features_t (*ndo_fix_features)(struct net_device *dev,
* netdev_features_t features);
@@ -1093,6 +1096,8 @@ struct net_device_ops {
struct net_device *slave_dev);
int (*ndo_del_slave)(struct net_device *dev,
struct net_device *slave_dev);
int (*ndo_get_slave)(struct net_device *slave_dev,
struct sk_buff *skb);
netdev_features_t (*ndo_fix_features)(struct net_device *dev,
netdev_features_t features);
int (*ndo_set_features)(struct net_device *dev,