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vxlan: Add switchdev notifications

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When offloading VXLAN devices, drivers need to know about events in
VXLAN FDB database. Since VXLAN models a bridge, it is natural to
distribute the VXLAN FDB notifications using the pre-existing switchdev
notification mechanism.

To that end, introduce two new notification types:
SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE and SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE.
Introduce a new function, vxlan_fdb_switchdev_call_notifiers() to send
the new notifier types, and a struct switchdev_notifier_vxlan_fdb_info
to communicate the details of the FDB entry under consideration.

Invoke the new function from vxlan_fdb_notify().

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata 2018-10-17 08:53:22 +00:00 • committed by David S. Miller
parent 5ff4ff4fe8
commit 9a99735317
3 changed files with 58 additions and 2 deletions
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3
include/net/switchdev.h
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@ -145,6 +145,9 @@ enum switchdev_notifier_type {
SWITCHDEV_FDB_ADD_TO_DEVICE,
SWITCHDEV_FDB_DEL_TO_DEVICE,
SWITCHDEV_FDB_OFFLOADED,
SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
};
struct switchdev_notifier_info {