From 9a99735317866e821c75f957fc85c63d049d330c Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Wed, 17 Oct 2018 08:53:22 +0000 Subject: vxlan: Add switchdev notifications 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 Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- include/net/switchdev.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/net/switchdev.h') diff --git a/include/net/switchdev.h b/include/net/switchdev.h index d574ce63bf22..47199a11c586 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -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 { -- cgit v1.2.3 From 0efe11733356273d734cc2c5ab2dc6f5865cbeb6 Mon Sep 17 00:00:00 2001 From: Petr Machata Date: Wed, 17 Oct 2018 08:53:26 +0000 Subject: vxlan: Support marking RDSTs as offloaded Offloaded bridge FDB entries are marked with NTF_OFFLOADED. Implement a similar mechanism for VXLAN, where a given remote destination can be marked as offloaded. To that end, introduce a new event, SWITCHDEV_VXLAN_FDB_OFFLOADED, through which the marking is communicated to the vxlan driver. To identify which RDST should be marked as offloaded, an switchdev_notifier_vxlan_fdb_info is passed to the listeners. The "offloaded" flag in that object determines whether the offloaded mark should be set or cleared. When sending offloaded FDB entries over netlink, mark them with NTF_OFFLOADED. Signed-off-by: Petr Machata Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- include/net/switchdev.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/switchdev.h') diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 47199a11c586..b040f82351ba 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -148,6 +148,7 @@ enum switchdev_notifier_type { SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE, SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE, + SWITCHDEV_VXLAN_FDB_OFFLOADED, }; struct switchdev_notifier_info { -- cgit v1.2.3 From e9ba0fbc7dd23a74e77960c98c988f59a1ff75aa Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Wed, 17 Oct 2018 08:53:29 +0000 Subject: bridge: switchdev: Allow clearing FDB entry offload indication Currently, an FDB entry only ceases being offloaded when it is deleted. This changes with VxLAN encapsulation. Devices capable of performing VxLAN encapsulation usually have only one FDB table, unlike the software data path which has two - one in the bridge driver and another in the VxLAN driver. Therefore, bridge FDB entries pointing to a VxLAN device are only offloaded if there is a corresponding entry in the VxLAN FDB. Allow clearing the offload indication in case the corresponding entry was deleted from the VxLAN FDB. Signed-off-by: Ido Schimmel Reviewed-by: Petr Machata Signed-off-by: David S. Miller --- include/net/switchdev.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/net/switchdev.h') diff --git a/include/net/switchdev.h b/include/net/switchdev.h index b040f82351ba..881ecb1555bf 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -159,7 +159,8 @@ struct switchdev_notifier_fdb_info { struct switchdev_notifier_info info; /* must be first */ const unsigned char *addr; u16 vid; - bool added_by_user; + u8 added_by_user:1, + offloaded:1; }; static inline struct net_device * -- cgit v1.2.3