From 9eefeabed6f831018c15bd7e17d34967ee34d9dd Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Fri, 29 May 2020 21:36:39 +0300 Subject: devlink: Add 'mirror' trap action The action is used by control traps such as IGMP query. The packet is flooded by the device, but also trapped to the CPU in order for the software bridge to mark the receiving port as a multicast router port. Such packets are marked with 'skb->offload_fwd_mark = 1' in order to prevent the software bridge from flooding them again. Signed-off-by: Ido Schimmel Reviewed-by: Jiri Pirko Signed-off-by: David S. Miller --- Documentation/networking/devlink/devlink-trap.rst | 2 ++ 1 file changed, 2 insertions(+) (limited to 'Documentation') diff --git a/Documentation/networking/devlink/devlink-trap.rst b/Documentation/networking/devlink/devlink-trap.rst index 4ca241e70064..5b97327caefc 100644 --- a/Documentation/networking/devlink/devlink-trap.rst +++ b/Documentation/networking/devlink/devlink-trap.rst @@ -108,6 +108,8 @@ The ``devlink-trap`` mechanism supports the following packet trap actions: * ``trap``: The sole copy of the packet is sent to the CPU. * ``drop``: The packet is dropped by the underlying device and a copy is not sent to the CPU. + * ``mirror``: The packet is forwarded by the underlying device and a copy is + sent to the CPU. Generic Packet Traps ==================== -- cgit v1.2.3